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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/parisc
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/parisc')
-rw-r--r--drivers/parisc/Kconfig169
-rw-r--r--drivers/parisc/Makefile27
-rw-r--r--drivers/parisc/README.dino28
-rw-r--r--drivers/parisc/asp.c132
-rw-r--r--drivers/parisc/ccio-dma.c1593
-rw-r--r--drivers/parisc/ccio-rm-dma.c201
-rw-r--r--drivers/parisc/dino.c1044
-rw-r--r--drivers/parisc/eisa.c464
-rw-r--r--drivers/parisc/eisa_eeprom.c134
-rw-r--r--drivers/parisc/eisa_enumerator.c521
-rw-r--r--drivers/parisc/gsc.c245
-rw-r--r--drivers/parisc/gsc.h47
-rw-r--r--drivers/parisc/hppb.c109
-rw-r--r--drivers/parisc/iommu-helpers.h171
-rw-r--r--drivers/parisc/iosapic.c921
-rw-r--r--drivers/parisc/iosapic_private.h188
-rw-r--r--drivers/parisc/lasi.c240
-rw-r--r--drivers/parisc/lba_pci.c1649
-rw-r--r--drivers/parisc/led.c760
-rw-r--r--drivers/parisc/pdc_stable.c735
-rw-r--r--drivers/parisc/power.c278
-rw-r--r--drivers/parisc/sba_iommu.c2165
-rw-r--r--drivers/parisc/superio.c508
-rw-r--r--drivers/parisc/wax.c140
24 files changed, 12469 insertions, 0 deletions
diff --git a/drivers/parisc/Kconfig b/drivers/parisc/Kconfig
new file mode 100644
index 000000000000..3f5de867acd7
--- /dev/null
+++ b/drivers/parisc/Kconfig
@@ -0,0 +1,169 @@
+menu "Bus options (PCI, PCMCIA, EISA, GSC, ISA)"
+
+config GSC
+ bool "VSC/GSC/HSC bus support"
+ default y
+ help
+ The VSC, GSC and HSC busses were used from the earliest 700-series
+ workstations up to and including the C360/J2240 workstations. They
+ were also used in servers from the E-class to the K-class. They
+ are not found in B1000, C3000, J5000, A500, L1000, N4000 and upwards.
+ If in doubt, say "Y".
+
+config HPPB
+ bool "HP-PB bus support"
+ depends on GSC
+ help
+ The HP-PB bus was used in the Nova class and K-class servers.
+ If in doubt, say "Y"
+
+config IOMMU_CCIO
+ bool "U2/Uturn I/O MMU"
+ depends on GSC
+ help
+ Say Y here to enable DMA management routines for the first
+ generation of PA-RISC cache-coherent machines. Programs the
+ U2/Uturn chip in "Virtual Mode" and use the I/O MMU.
+
+config GSC_LASI
+ bool "Lasi I/O support"
+ depends on GSC
+ help
+ Say Y here to support the Lasi multifunction chip found in
+ many PA-RISC workstations & servers. It includes interfaces
+ for a parallel port, serial port, NCR 53c710 SCSI, Apricot
+ Ethernet, Harmony audio, PS/2 keyboard & mouse, ISDN, telephony
+ and floppy. Note that you must still enable all the individual
+ drivers for these chips.
+
+config GSC_WAX
+ bool "Wax I/O support"
+ depends on GSC
+ help
+ Say Y here to support the Wax multifunction chip found in some
+ older systems, including B/C/D/R class and 715/64, 715/80 and
+ 715/100. Wax includes an EISA adapter, a serial port (not always
+ used), a HIL interface chip and is also known to be used as the
+ GSC bridge for an X.25 GSC card.
+
+config EISA
+ bool "EISA support"
+ depends on GSC
+ help
+ Say Y here if you have an EISA bus in your machine. This code
+ supports both the Mongoose & Wax EISA adapters. It is sadly
+ incomplete and lacks support for card-to-host DMA.
+
+source "drivers/eisa/Kconfig"
+
+config ISA
+ bool "ISA support"
+ depends on EISA
+ help
+ If you want to plug an ISA card into your EISA bus, say Y here.
+ Most people should say N.
+
+config PCI
+ bool "PCI support"
+ help
+ All recent HP machines have PCI slots, and you should say Y here
+ if you have a recent machine. If you are convinced you do not have
+ PCI slots in your machine (eg a 712), then you may say "N" here.
+ Beware that some GSC cards have a Dino onboard and PCI inside them,
+ so it may be safest to say "Y" anyway.
+
+source "drivers/pci/Kconfig"
+
+config GSC_DINO
+ bool "GSCtoPCI/Dino PCI support"
+ depends on PCI && GSC
+ help
+ Say Y here to support the Dino & Cujo GSC to PCI bridges found in
+ machines from the B132 to the C360, the J2240 and the A180. Some
+ GSC/HSC cards (eg gigabit & dual 100 Mbit Ethernet) have a Dino on
+ the card, and you also need to say Y here if you have such a card.
+ Note that Dino also supplies one of the serial ports on certain
+ machines. If in doubt, say Y.
+
+config PCI_LBA
+ bool "LBA/Elroy PCI support"
+ depends on PCI
+ help
+ Say Y here to support the Elroy PCI Lower Bus Adapter. This is
+ present on B, C, J, L and N-class machines with 4-digit model
+ numbers and the A400/A500.
+
+config IOSAPIC
+ bool
+ depends on PCI_LBA
+ default PCI_LBA
+
+config IOMMU_SBA
+ bool
+ depends on PCI_LBA
+ default PCI_LBA
+
+#config PCI_EPIC
+# bool "EPIC/SAGA PCI support"
+# depends on PCI
+# default y
+# help
+# Say Y here for V-class PCI, DMA/IOMMU, IRQ subsystem support.
+
+source "drivers/pcmcia/Kconfig"
+
+source "drivers/pci/hotplug/Kconfig"
+
+endmenu
+
+menu "PA-RISC specific drivers"
+
+config SUPERIO
+ bool "SuperIO (SuckyIO) support"
+ depends on PCI_LBA
+ default y
+ help
+ Say Y here to support the SuperIO chip found in Bxxxx, C3xxx and
+ J5xxx+ machines. This enables IDE, Floppy, Parallel Port, and
+ Serial port on those machines.
+
+config CHASSIS_LCD_LED
+ bool "Chassis LCD and LED support"
+ default y
+ help
+ Say Y here if you want to enable support for the Heartbeat,
+ Disk/Network activities LEDs on some PA-RISC machines,
+ or support for the LCD that can be found on recent material.
+
+ This has nothing to do with LED State support for A and E class.
+
+ If unsure, say Y.
+
+config PDC_CHASSIS
+ bool "PDC chassis State Panel support"
+ default y
+ help
+ Say Y here if you want to enable support for the LED State front
+ panel as found on E class, and support for the GSP Virtual Front
+ Panel (LED State and message logging) as found on high end
+ servers such as A, L and N-class.
+
+ This has nothing to do with Chassis LCD and LED support.
+
+ If unsure, say Y.
+
+config PDC_STABLE
+ tristate "PDC Stable Storage support"
+ depends on SYSFS
+ default y
+ help
+ Say Y here if you want to enable support for accessing Stable Storage
+ variables (PDC non volatile variables such as Primary Boot Path,
+ Console Path, Autoboot, Autosearch, etc) through SysFS.
+
+ If unsure, say Y.
+
+ To compile this driver as a module, choose M here.
+ The module will be called pdc_stable.
+
+endmenu
diff --git a/drivers/parisc/Makefile b/drivers/parisc/Makefile
new file mode 100644
index 000000000000..f95cab57133a
--- /dev/null
+++ b/drivers/parisc/Makefile
@@ -0,0 +1,27 @@
+#
+# Makefile for most of the non-PCI devices in PA-RISC machines
+#
+
+# I/O SAPIC is also on IA64 platforms.
+# The two could be merged into a common source some day.
+obj-$(CONFIG_IOSAPIC) += iosapic.o
+obj-$(CONFIG_IOMMU_SBA) += sba_iommu.o
+obj-$(CONFIG_PCI_LBA) += lba_pci.o
+
+# Only use one of them: ccio-rm-dma is for PCX-W systems *only*
+# obj-$(CONFIG_IOMMU_CCIO) += ccio-rm-dma.o
+obj-$(CONFIG_IOMMU_CCIO) += ccio-dma.o
+
+obj-$(CONFIG_GSC) += gsc.o
+
+obj-$(CONFIG_HPPB) += hppb.o
+obj-$(CONFIG_GSC_DINO) += dino.o
+obj-$(CONFIG_GSC_LASI) += lasi.o asp.o
+obj-$(CONFIG_GSC_WAX) += wax.o
+obj-$(CONFIG_EISA) += eisa.o eisa_enumerator.o eisa_eeprom.o
+
+obj-$(CONFIG_SUPERIO) += superio.o
+obj-$(CONFIG_CHASSIS_LCD_LED) += led.o
+obj-$(CONFIG_PDC_STABLE) += pdc_stable.o
+obj-y += power.o
+
diff --git a/drivers/parisc/README.dino b/drivers/parisc/README.dino
new file mode 100644
index 000000000000..097324f34bbe
--- /dev/null
+++ b/drivers/parisc/README.dino
@@ -0,0 +1,28 @@
+/*
+** HP VISUALIZE Workstation PCI Bus Defect
+**
+** "HP has discovered a potential system defect that can affect
+** the behavior of five models of HP VISUALIZE workstations when
+** equipped with third-party or customer-installed PCI I/O expansion
+** cards. The defect is limited to the HP C180, C160, C160L, B160L,
+** and B132L VISUALIZE workstations, and will only be encountered
+** when data is transmitted through PCI I/O expansion cards on the
+** PCI bus. HP-supplied graphics cards that utilize the PCI bus are
+** not affected."
+**
+** REVISIT: "go/pci_defect" link below is stale.
+** HP Internal can use <http://hpfcdma.fc.hp.com:80/Dino/>
+**
+** Product First Good Serial Number
+** C200/C240 (US) US67350000
+**B132L+/B180 (US) US67390000
+** C200 (Europe) 3713G01000
+** B180L (Europe) 3720G01000
+**
+** Note that many boards were fixed/replaced under a free replacement
+** program. Assume a machine is only "suspect" until proven otherwise.
+**
+** "The pci_check program will also be available as application
+** patch PHSS_12295"
+*/
+
diff --git a/drivers/parisc/asp.c b/drivers/parisc/asp.c
new file mode 100644
index 000000000000..388609967133
--- /dev/null
+++ b/drivers/parisc/asp.c
@@ -0,0 +1,132 @@
+/*
+ * ASP Device Driver
+ *
+ * (c) Copyright 2000 The Puffin Group Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * by Helge Deller <deller@gmx.de>
+ */
+
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <asm/io.h>
+#include <asm/led.h>
+
+#include "gsc.h"
+
+#define ASP_GSC_IRQ 3 /* hardcoded interrupt for GSC */
+
+#define ASP_VER_OFFSET 0x20 /* offset of ASP version */
+
+#define ASP_LED_ADDR 0xf0800020
+
+#define VIPER_INT_WORD 0xFFFBF088 /* addr of viper interrupt word */
+
+static struct gsc_asic asp;
+
+static void asp_choose_irq(struct parisc_device *dev, void *ctrl)
+{
+ int irq;
+
+ switch (dev->id.sversion) {
+ case 0x71: irq = 9; break; /* SCSI */
+ case 0x72: irq = 8; break; /* LAN */
+ case 0x73: irq = 1; break; /* HIL */
+ case 0x74: irq = 7; break; /* Centronics */
+ case 0x75: irq = (dev->hw_path == 4) ? 5 : 6; break; /* RS232 */
+ case 0x76: irq = 10; break; /* EISA BA */
+ case 0x77: irq = 11; break; /* Graphics1 */
+ case 0x7a: irq = 13; break; /* Audio (Bushmaster) */
+ case 0x7b: irq = 13; break; /* Audio (Scorpio) */
+ case 0x7c: irq = 3; break; /* FW SCSI */
+ case 0x7d: irq = 4; break; /* FDDI */
+ case 0x7f: irq = 13; break; /* Audio (Outfield) */
+ default: return; /* Unknown */
+ }
+
+ gsc_asic_assign_irq(ctrl, irq, &dev->irq);
+
+ switch (dev->id.sversion) {
+ case 0x73: irq = 2; break; /* i8042 High-priority */
+ case 0x76: irq = 0; break; /* EISA BA */
+ default: return; /* Other */
+ }
+
+ gsc_asic_assign_irq(ctrl, irq, &dev->aux_irq);
+}
+
+/* There are two register ranges we're interested in. Interrupt /
+ * Status / LED are at 0xf080xxxx and Asp special registers are at
+ * 0xf082fxxx. PDC only tells us that Asp is at 0xf082f000, so for
+ * the purposes of interrupt handling, we have to tell other bits of
+ * the kernel to look at the other registers.
+ */
+#define ASP_INTERRUPT_ADDR 0xf0800000
+
+int __init
+asp_init_chip(struct parisc_device *dev)
+{
+ struct gsc_irq gsc_irq;
+ int ret;
+
+ asp.version = gsc_readb(dev->hpa + ASP_VER_OFFSET) & 0xf;
+ asp.name = (asp.version == 1) ? "Asp" : "Cutoff";
+ asp.hpa = ASP_INTERRUPT_ADDR;
+
+ printk(KERN_INFO "%s version %d at 0x%lx found.\n",
+ asp.name, asp.version, dev->hpa);
+
+ /* the IRQ ASP should use */
+ ret = -EBUSY;
+ dev->irq = gsc_claim_irq(&gsc_irq, ASP_GSC_IRQ);
+ if (dev->irq < 0) {
+ printk(KERN_ERR "%s(): cannot get GSC irq\n", __FUNCTION__);
+ goto out;
+ }
+
+ asp.eim = ((u32) gsc_irq.txn_addr) | gsc_irq.txn_data;
+
+ ret = request_irq(gsc_irq.irq, gsc_asic_intr, 0, "asp", &asp);
+ if (ret < 0)
+ goto out;
+
+ /* Program VIPER to interrupt on the ASP irq */
+ gsc_writel((1 << (31 - ASP_GSC_IRQ)),VIPER_INT_WORD);
+
+ /* Done init'ing, register this driver */
+ ret = gsc_common_setup(dev, &asp);
+ if (ret)
+ goto out;
+
+ gsc_fixup_irqs(dev, &asp, asp_choose_irq);
+ /* Mongoose is a sibling of Asp, not a child... */
+ gsc_fixup_irqs(parisc_parent(dev), &asp, asp_choose_irq);
+
+ /* initialize the chassis LEDs */
+#ifdef CONFIG_CHASSIS_LCD_LED
+ register_led_driver(DISPLAY_MODEL_OLD_ASP, LED_CMD_REG_NONE,
+ ASP_LED_ADDR);
+#endif
+
+ out:
+ return ret;
+}
+
+static struct parisc_device_id asp_tbl[] = {
+ { HPHW_BA, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00070 },
+ { 0, }
+};
+
+struct parisc_driver asp_driver = {
+ .name = "Asp",
+ .id_table = asp_tbl,
+ .probe = asp_init_chip,
+};
diff --git a/drivers/parisc/ccio-dma.c b/drivers/parisc/ccio-dma.c
new file mode 100644
index 000000000000..0e98a9d9834c
--- /dev/null
+++ b/drivers/parisc/ccio-dma.c
@@ -0,0 +1,1593 @@
+/*
+** ccio-dma.c:
+** DMA management routines for first generation cache-coherent machines.
+** Program U2/Uturn in "Virtual Mode" and use the I/O MMU.
+**
+** (c) Copyright 2000 Grant Grundler
+** (c) Copyright 2000 Ryan Bradetich
+** (c) Copyright 2000 Hewlett-Packard Company
+**
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License as published by
+** the Free Software Foundation; either version 2 of the License, or
+** (at your option) any later version.
+**
+**
+** "Real Mode" operation refers to U2/Uturn chip operation.
+** U2/Uturn were designed to perform coherency checks w/o using
+** the I/O MMU - basically what x86 does.
+**
+** Philipp Rumpf has a "Real Mode" driver for PCX-W machines at:
+** CVSROOT=:pserver:anonymous@198.186.203.37:/cvsroot/linux-parisc
+** cvs -z3 co linux/arch/parisc/kernel/dma-rm.c
+**
+** I've rewritten his code to work under TPG's tree. See ccio-rm-dma.c.
+**
+** Drawbacks of using Real Mode are:
+** o outbound DMA is slower - U2 won't prefetch data (GSC+ XQL signal).
+** o Inbound DMA less efficient - U2 can't use DMA_FAST attribute.
+** o Ability to do scatter/gather in HW is lost.
+** o Doesn't work under PCX-U/U+ machines since they didn't follow
+** the coherency design originally worked out. Only PCX-W does.
+*/
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/spinlock.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/pci.h>
+#include <linux/reboot.h>
+
+#include <asm/byteorder.h>
+#include <asm/cache.h> /* for L1_CACHE_BYTES */
+#include <asm/uaccess.h>
+#include <asm/page.h>
+#include <asm/dma.h>
+#include <asm/io.h>
+#include <asm/hardware.h> /* for register_module() */
+#include <asm/parisc-device.h>
+
+/*
+** Choose "ccio" since that's what HP-UX calls it.
+** Make it easier for folks to migrate from one to the other :^)
+*/
+#define MODULE_NAME "ccio"
+
+#undef DEBUG_CCIO_RES
+#undef DEBUG_CCIO_RUN
+#undef DEBUG_CCIO_INIT
+#undef DEBUG_CCIO_RUN_SG
+
+#ifdef CONFIG_PROC_FS
+/*
+ * CCIO_SEARCH_TIME can help measure how fast the bitmap search is.
+ * impacts performance though - ditch it if you don't use it.
+ */
+#define CCIO_SEARCH_TIME
+#undef CCIO_MAP_STATS
+#else
+#undef CCIO_SEARCH_TIME
+#undef CCIO_MAP_STATS
+#endif
+
+#include <linux/proc_fs.h>
+#include <asm/runway.h> /* for proc_runway_root */
+
+#ifdef DEBUG_CCIO_INIT
+#define DBG_INIT(x...) printk(x)
+#else
+#define DBG_INIT(x...)
+#endif
+
+#ifdef DEBUG_CCIO_RUN
+#define DBG_RUN(x...) printk(x)
+#else
+#define DBG_RUN(x...)
+#endif
+
+#ifdef DEBUG_CCIO_RES
+#define DBG_RES(x...) printk(x)
+#else
+#define DBG_RES(x...)
+#endif
+
+#ifdef DEBUG_CCIO_RUN_SG
+#define DBG_RUN_SG(x...) printk(x)
+#else
+#define DBG_RUN_SG(x...)
+#endif
+
+#define CCIO_INLINE /* inline */
+#define WRITE_U32(value, addr) gsc_writel(value, (u32 *)(addr))
+#define READ_U32(addr) gsc_readl((u32 *)(addr))
+
+#define U2_IOA_RUNWAY 0x580
+#define U2_BC_GSC 0x501
+#define UTURN_IOA_RUNWAY 0x581
+#define UTURN_BC_GSC 0x502
+
+#define IOA_NORMAL_MODE 0x00020080 /* IO_CONTROL to turn on CCIO */
+#define CMD_TLB_DIRECT_WRITE 35 /* IO_COMMAND for I/O TLB Writes */
+#define CMD_TLB_PURGE 33 /* IO_COMMAND to Purge I/O TLB entry */
+
+struct ioa_registers {
+ /* Runway Supervisory Set */
+ volatile int32_t unused1[12];
+ volatile uint32_t io_command; /* Offset 12 */
+ volatile uint32_t io_status; /* Offset 13 */
+ volatile uint32_t io_control; /* Offset 14 */
+ volatile int32_t unused2[1];
+
+ /* Runway Auxiliary Register Set */
+ volatile uint32_t io_err_resp; /* Offset 0 */
+ volatile uint32_t io_err_info; /* Offset 1 */
+ volatile uint32_t io_err_req; /* Offset 2 */
+ volatile uint32_t io_err_resp_hi; /* Offset 3 */
+ volatile uint32_t io_tlb_entry_m; /* Offset 4 */
+ volatile uint32_t io_tlb_entry_l; /* Offset 5 */
+ volatile uint32_t unused3[1];
+ volatile uint32_t io_pdir_base; /* Offset 7 */
+ volatile uint32_t io_io_low_hv; /* Offset 8 */
+ volatile uint32_t io_io_high_hv; /* Offset 9 */
+ volatile uint32_t unused4[1];
+ volatile uint32_t io_chain_id_mask; /* Offset 11 */
+ volatile uint32_t unused5[2];
+ volatile uint32_t io_io_low; /* Offset 14 */
+ volatile uint32_t io_io_high; /* Offset 15 */
+};
+
+/*
+** IOA Registers
+** -------------
+**
+** Runway IO_CONTROL Register (+0x38)
+**
+** The Runway IO_CONTROL register controls the forwarding of transactions.
+**
+** | 0 ... 13 | 14 15 | 16 ... 21 | 22 | 23 24 | 25 ... 31 |
+** | HV | TLB | reserved | HV | mode | reserved |
+**
+** o mode field indicates the address translation of transactions
+** forwarded from Runway to GSC+:
+** Mode Name Value Definition
+** Off (default) 0 Opaque to matching addresses.
+** Include 1 Transparent for matching addresses.
+** Peek 3 Map matching addresses.
+**
+** + "Off" mode: Runway transactions which match the I/O range
+** specified by the IO_IO_LOW/IO_IO_HIGH registers will be ignored.
+** + "Include" mode: all addresses within the I/O range specified
+** by the IO_IO_LOW and IO_IO_HIGH registers are transparently
+** forwarded. This is the I/O Adapter's normal operating mode.
+** + "Peek" mode: used during system configuration to initialize the
+** GSC+ bus. Runway Write_Shorts in the address range specified by
+** IO_IO_LOW and IO_IO_HIGH are forwarded through the I/O Adapter
+** *AND* the GSC+ address is remapped to the Broadcast Physical
+** Address space by setting the 14 high order address bits of the
+** 32 bit GSC+ address to ones.
+**
+** o TLB field affects transactions which are forwarded from GSC+ to Runway.
+** "Real" mode is the poweron default.
+**
+** TLB Mode Value Description
+** Real 0 No TLB translation. Address is directly mapped and the
+** virtual address is composed of selected physical bits.
+** Error 1 Software fills the TLB manually.
+** Normal 2 IOA fetches IO TLB misses from IO PDIR (in host memory).
+**
+**
+** IO_IO_LOW_HV +0x60 (HV dependent)
+** IO_IO_HIGH_HV +0x64 (HV dependent)
+** IO_IO_LOW +0x78 (Architected register)
+** IO_IO_HIGH +0x7c (Architected register)
+**
+** IO_IO_LOW and IO_IO_HIGH set the lower and upper bounds of the
+** I/O Adapter address space, respectively.
+**
+** 0 ... 7 | 8 ... 15 | 16 ... 31 |
+** 11111111 | 11111111 | address |
+**
+** Each LOW/HIGH pair describes a disjoint address space region.
+** (2 per GSC+ port). Each incoming Runway transaction address is compared
+** with both sets of LOW/HIGH registers. If the address is in the range
+** greater than or equal to IO_IO_LOW and less than IO_IO_HIGH the transaction
+** for forwarded to the respective GSC+ bus.
+** Specify IO_IO_LOW equal to or greater than IO_IO_HIGH to avoid specifying
+** an address space region.
+**
+** In order for a Runway address to reside within GSC+ extended address space:
+** Runway Address [0:7] must identically compare to 8'b11111111
+** Runway Address [8:11] must be equal to IO_IO_LOW(_HV)[16:19]
+** Runway Address [12:23] must be greater than or equal to
+** IO_IO_LOW(_HV)[20:31] and less than IO_IO_HIGH(_HV)[20:31].
+** Runway Address [24:39] is not used in the comparison.
+**
+** When the Runway transaction is forwarded to GSC+, the GSC+ address is
+** as follows:
+** GSC+ Address[0:3] 4'b1111
+** GSC+ Address[4:29] Runway Address[12:37]
+** GSC+ Address[30:31] 2'b00
+**
+** All 4 Low/High registers must be initialized (by PDC) once the lower bus
+** is interrogated and address space is defined. The operating system will
+** modify the architectural IO_IO_LOW and IO_IO_HIGH registers following
+** the PDC initialization. However, the hardware version dependent IO_IO_LOW
+** and IO_IO_HIGH registers should not be subsequently altered by the OS.
+**
+** Writes to both sets of registers will take effect immediately, bypassing
+** the queues, which ensures that subsequent Runway transactions are checked
+** against the updated bounds values. However reads are queued, introducing
+** the possibility of a read being bypassed by a subsequent write to the same
+** register. This sequence can be avoided by having software wait for read
+** returns before issuing subsequent writes.
+*/
+
+struct ioc {
+ struct ioa_registers *ioc_hpa; /* I/O MMU base address */
+ u8 *res_map; /* resource map, bit == pdir entry */
+ u64 *pdir_base; /* physical base address */
+ u32 pdir_size; /* bytes, function of IOV Space size */
+ u32 res_hint; /* next available IOVP -
+ circular search */
+ u32 res_size; /* size of resource map in bytes */
+ spinlock_t res_lock;
+
+#ifdef CCIO_SEARCH_TIME
+#define CCIO_SEARCH_SAMPLE 0x100
+ unsigned long avg_search[CCIO_SEARCH_SAMPLE];
+ unsigned long avg_idx; /* current index into avg_search */
+#endif
+#ifdef CCIO_MAP_STATS
+ unsigned long used_pages;
+ unsigned long msingle_calls;
+ unsigned long msingle_pages;
+ unsigned long msg_calls;
+ unsigned long msg_pages;
+ unsigned long usingle_calls;
+ unsigned long usingle_pages;
+ unsigned long usg_calls;
+ unsigned long usg_pages;
+#endif
+ unsigned short cujo20_bug;
+
+ /* STUFF We don't need in performance path */
+ u32 chainid_shift; /* specify bit location of chain_id */
+ struct ioc *next; /* Linked list of discovered iocs */
+ const char *name; /* device name from firmware */
+ unsigned int hw_path; /* the hardware path this ioc is associatd with */
+ struct pci_dev *fake_pci_dev; /* the fake pci_dev for non-pci devs */
+ struct resource mmio_region[2]; /* The "routed" MMIO regions */
+};
+
+static struct ioc *ioc_list;
+static int ioc_count;
+
+/**************************************************************
+*
+* I/O Pdir Resource Management
+*
+* Bits set in the resource map are in use.
+* Each bit can represent a number of pages.
+* LSbs represent lower addresses (IOVA's).
+*
+* This was was copied from sba_iommu.c. Don't try to unify
+* the two resource managers unless a way to have different
+* allocation policies is also adjusted. We'd like to avoid
+* I/O TLB thrashing by having resource allocation policy
+* match the I/O TLB replacement policy.
+*
+***************************************************************/
+#define IOVP_SIZE PAGE_SIZE
+#define IOVP_SHIFT PAGE_SHIFT
+#define IOVP_MASK PAGE_MASK
+
+/* Convert from IOVP to IOVA and vice versa. */
+#define CCIO_IOVA(iovp,offset) ((iovp) | (offset))
+#define CCIO_IOVP(iova) ((iova) & IOVP_MASK)
+
+#define PDIR_INDEX(iovp) ((iovp)>>IOVP_SHIFT)
+#define MKIOVP(pdir_idx) ((long)(pdir_idx) << IOVP_SHIFT)
+#define MKIOVA(iovp,offset) (dma_addr_t)((long)iovp | (long)offset)
+#define ROUNDUP(x,y) ((x + ((y)-1)) & ~((y)-1))
+
+/*
+** Don't worry about the 150% average search length on a miss.
+** If the search wraps around, and passes the res_hint, it will
+** cause the kernel to panic anyhow.
+*/
+#define CCIO_SEARCH_LOOP(ioc, res_idx, mask, size) \
+ for(; res_ptr < res_end; ++res_ptr) { \
+ if(0 == (*res_ptr & mask)) { \
+ *res_ptr |= mask; \
+ res_idx = (unsigned int)((unsigned long)res_ptr - (unsigned long)ioc->res_map); \
+ ioc->res_hint = res_idx + (size >> 3); \
+ goto resource_found; \
+ } \
+ }
+
+#define CCIO_FIND_FREE_MAPPING(ioa, res_idx, mask, size) \
+ u##size *res_ptr = (u##size *)&((ioc)->res_map[ioa->res_hint & ~((size >> 3) - 1)]); \
+ u##size *res_end = (u##size *)&(ioc)->res_map[ioa->res_size]; \
+ CCIO_SEARCH_LOOP(ioc, res_idx, mask, size); \
+ res_ptr = (u##size *)&(ioc)->res_map[0]; \
+ CCIO_SEARCH_LOOP(ioa, res_idx, mask, size);
+
+/*
+** Find available bit in this ioa's resource map.
+** Use a "circular" search:
+** o Most IOVA's are "temporary" - avg search time should be small.
+** o keep a history of what happened for debugging
+** o KISS.
+**
+** Perf optimizations:
+** o search for log2(size) bits at a time.
+** o search for available resource bits using byte/word/whatever.
+** o use different search for "large" (eg > 4 pages) or "very large"
+** (eg > 16 pages) mappings.
+*/
+
+/**
+ * ccio_alloc_range - Allocate pages in the ioc's resource map.
+ * @ioc: The I/O Controller.
+ * @pages_needed: The requested number of pages to be mapped into the
+ * I/O Pdir...
+ *
+ * This function searches the resource map of the ioc to locate a range
+ * of available pages for the requested size.
+ */
+static int
+ccio_alloc_range(struct ioc *ioc, size_t size)
+{
+ unsigned int pages_needed = size >> IOVP_SHIFT;
+ unsigned int res_idx;
+#ifdef CCIO_SEARCH_TIME
+ unsigned long cr_start = mfctl(16);
+#endif
+
+ BUG_ON(pages_needed == 0);
+ BUG_ON((pages_needed * IOVP_SIZE) > DMA_CHUNK_SIZE);
+
+ DBG_RES("%s() size: %d pages_needed %d\n",
+ __FUNCTION__, size, pages_needed);
+
+ /*
+ ** "seek and ye shall find"...praying never hurts either...
+ ** ggg sacrifices another 710 to the computer gods.
+ */
+
+ if (pages_needed <= 8) {
+ /*
+ * LAN traffic will not thrash the TLB IFF the same NIC
+ * uses 8 adjacent pages to map seperate payload data.
+ * ie the same byte in the resource bit map.
+ */
+#if 0
+ /* FIXME: bit search should shift it's way through
+ * an unsigned long - not byte at a time. As it is now,
+ * we effectively allocate this byte to this mapping.
+ */
+ unsigned long mask = ~(~0UL >> pages_needed);
+ CCIO_FIND_FREE_MAPPING(ioc, res_idx, mask, 8);
+#else
+ CCIO_FIND_FREE_MAPPING(ioc, res_idx, 0xff, 8);
+#endif
+ } else if (pages_needed <= 16) {
+ CCIO_FIND_FREE_MAPPING(ioc, res_idx, 0xffff, 16);
+ } else if (pages_needed <= 32) {
+ CCIO_FIND_FREE_MAPPING(ioc, res_idx, ~(unsigned int)0, 32);
+#ifdef __LP64__
+ } else if (pages_needed <= 64) {
+ CCIO_FIND_FREE_MAPPING(ioc, res_idx, ~0UL, 64);
+#endif
+ } else {
+ panic("%s: %s() Too many pages to map. pages_needed: %u\n",
+ __FILE__, __FUNCTION__, pages_needed);
+ }
+
+ panic("%s: %s() I/O MMU is out of mapping resources.\n", __FILE__,
+ __FUNCTION__);
+
+resource_found:
+
+ DBG_RES("%s() res_idx %d res_hint: %d\n",
+ __FUNCTION__, res_idx, ioc->res_hint);
+
+#ifdef CCIO_SEARCH_TIME
+ {
+ unsigned long cr_end = mfctl(16);
+ unsigned long tmp = cr_end - cr_start;
+ /* check for roll over */
+ cr_start = (cr_end < cr_start) ? -(tmp) : (tmp);
+ }
+ ioc->avg_search[ioc->avg_idx++] = cr_start;
+ ioc->avg_idx &= CCIO_SEARCH_SAMPLE - 1;
+#endif
+#ifdef CCIO_MAP_STATS
+ ioc->used_pages += pages_needed;
+#endif
+ /*
+ ** return the bit address.
+ */
+ return res_idx << 3;
+}
+
+#define CCIO_FREE_MAPPINGS(ioc, res_idx, mask, size) \
+ u##size *res_ptr = (u##size *)&((ioc)->res_map[res_idx]); \
+ BUG_ON((*res_ptr & mask) != mask); \
+ *res_ptr &= ~(mask);
+
+/**
+ * ccio_free_range - Free pages from the ioc's resource map.
+ * @ioc: The I/O Controller.
+ * @iova: The I/O Virtual Address.
+ * @pages_mapped: The requested number of pages to be freed from the
+ * I/O Pdir.
+ *
+ * This function frees the resouces allocated for the iova.
+ */
+static void
+ccio_free_range(struct ioc *ioc, dma_addr_t iova, unsigned long pages_mapped)
+{
+ unsigned long iovp = CCIO_IOVP(iova);
+ unsigned int res_idx = PDIR_INDEX(iovp) >> 3;
+
+ BUG_ON(pages_mapped == 0);
+ BUG_ON((pages_mapped * IOVP_SIZE) > DMA_CHUNK_SIZE);
+ BUG_ON(pages_mapped > BITS_PER_LONG);
+
+ DBG_RES("%s(): res_idx: %d pages_mapped %d\n",
+ __FUNCTION__, res_idx, pages_mapped);
+
+#ifdef CCIO_MAP_STATS
+ ioc->used_pages -= pages_mapped;
+#endif
+
+ if(pages_mapped <= 8) {
+#if 0
+ /* see matching comments in alloc_range */
+ unsigned long mask = ~(~0UL >> pages_mapped);
+ CCIO_FREE_MAPPINGS(ioc, res_idx, mask, 8);
+#else
+ CCIO_FREE_MAPPINGS(ioc, res_idx, 0xff, 8);
+#endif
+ } else if(pages_mapped <= 16) {
+ CCIO_FREE_MAPPINGS(ioc, res_idx, 0xffff, 16);
+ } else if(pages_mapped <= 32) {
+ CCIO_FREE_MAPPINGS(ioc, res_idx, ~(unsigned int)0, 32);
+#ifdef __LP64__
+ } else if(pages_mapped <= 64) {
+ CCIO_FREE_MAPPINGS(ioc, res_idx, ~0UL, 64);
+#endif
+ } else {
+ panic("%s:%s() Too many pages to unmap.\n", __FILE__,
+ __FUNCTION__);
+ }
+}
+
+/****************************************************************
+**
+** CCIO dma_ops support routines
+**
+*****************************************************************/
+
+typedef unsigned long space_t;
+#define KERNEL_SPACE 0
+
+/*
+** DMA "Page Type" and Hints
+** o if SAFE_DMA isn't set, mapping is for FAST_DMA. SAFE_DMA should be
+** set for subcacheline DMA transfers since we don't want to damage the
+** other part of a cacheline.
+** o SAFE_DMA must be set for "memory" allocated via pci_alloc_consistent().
+** This bit tells U2 to do R/M/W for partial cachelines. "Streaming"
+** data can avoid this if the mapping covers full cache lines.
+** o STOP_MOST is needed for atomicity across cachelines.
+** Apperently only "some EISA devices" need this.
+** Using CONFIG_ISA is hack. Only the IOA with EISA under it needs
+** to use this hint iff the EISA devices needs this feature.
+** According to the U2 ERS, STOP_MOST enabled pages hurt performance.
+** o PREFETCH should *not* be set for cases like Multiple PCI devices
+** behind GSCtoPCI (dino) bus converter. Only one cacheline per GSC
+** device can be fetched and multiply DMA streams will thrash the
+** prefetch buffer and burn memory bandwidth. See 6.7.3 "Prefetch Rules
+** and Invalidation of Prefetch Entries".
+**
+** FIXME: the default hints need to be per GSC device - not global.
+**
+** HP-UX dorks: linux device driver programming model is totally different
+** than HP-UX's. HP-UX always sets HINT_PREFETCH since it's drivers
+** do special things to work on non-coherent platforms...linux has to
+** be much more careful with this.
+*/
+#define IOPDIR_VALID 0x01UL
+#define HINT_SAFE_DMA 0x02UL /* used for pci_alloc_consistent() pages */
+#ifdef CONFIG_EISA
+#define HINT_STOP_MOST 0x04UL /* LSL support */
+#else
+#define HINT_STOP_MOST 0x00UL /* only needed for "some EISA devices" */
+#endif
+#define HINT_UDPATE_ENB 0x08UL /* not used/supported by U2 */
+#define HINT_PREFETCH 0x10UL /* for outbound pages which are not SAFE */
+
+
+/*
+** Use direction (ie PCI_DMA_TODEVICE) to pick hint.
+** ccio_alloc_consistent() depends on this to get SAFE_DMA
+** when it passes in BIDIRECTIONAL flag.
+*/
+static u32 hint_lookup[] = {
+ [PCI_DMA_BIDIRECTIONAL] = HINT_STOP_MOST | HINT_SAFE_DMA | IOPDIR_VALID,
+ [PCI_DMA_TODEVICE] = HINT_STOP_MOST | HINT_PREFETCH | IOPDIR_VALID,
+ [PCI_DMA_FROMDEVICE] = HINT_STOP_MOST | IOPDIR_VALID,
+};
+
+/**
+ * ccio_io_pdir_entry - Initialize an I/O Pdir.
+ * @pdir_ptr: A pointer into I/O Pdir.
+ * @sid: The Space Identifier.
+ * @vba: The virtual address.
+ * @hints: The DMA Hint.
+ *
+ * Given a virtual address (vba, arg2) and space id, (sid, arg1),
+ * load the I/O PDIR entry pointed to by pdir_ptr (arg0). Each IO Pdir
+ * entry consists of 8 bytes as shown below (MSB == bit 0):
+ *
+ *
+ * WORD 0:
+ * +------+----------------+-----------------------------------------------+
+ * | Phys | Virtual Index | Phys |
+ * | 0:3 | 0:11 | 4:19 |
+ * |4 bits| 12 bits | 16 bits |
+ * +------+----------------+-----------------------------------------------+
+ * WORD 1:
+ * +-----------------------+-----------------------------------------------+
+ * | Phys | Rsvd | Prefetch |Update |Rsvd |Lock |Safe |Valid |
+ * | 20:39 | | Enable |Enable | |Enable|DMA | |
+ * | 20 bits | 5 bits | 1 bit |1 bit |2 bits|1 bit |1 bit |1 bit |
+ * +-----------------------+-----------------------------------------------+
+ *
+ * The virtual index field is filled with the results of the LCI
+ * (Load Coherence Index) instruction. The 8 bits used for the virtual
+ * index are bits 12:19 of the value returned by LCI.
+ */
+void CCIO_INLINE
+ccio_io_pdir_entry(u64 *pdir_ptr, space_t sid, unsigned long vba,
+ unsigned long hints)
+{
+ register unsigned long pa;
+ register unsigned long ci; /* coherent index */
+
+ /* We currently only support kernel addresses */
+ BUG_ON(sid != KERNEL_SPACE);
+
+ mtsp(sid,1);
+
+ /*
+ ** WORD 1 - low order word
+ ** "hints" parm includes the VALID bit!
+ ** "dep" clobbers the physical address offset bits as well.
+ */
+ pa = virt_to_phys(vba);
+ asm volatile("depw %1,31,12,%0" : "+r" (pa) : "r" (hints));
+ ((u32 *)pdir_ptr)[1] = (u32) pa;
+
+ /*
+ ** WORD 0 - high order word
+ */
+
+#ifdef __LP64__
+ /*
+ ** get bits 12:15 of physical address
+ ** shift bits 16:31 of physical address
+ ** and deposit them
+ */
+ asm volatile ("extrd,u %1,15,4,%0" : "=r" (ci) : "r" (pa));
+ asm volatile ("extrd,u %1,31,16,%0" : "+r" (pa) : "r" (pa));
+ asm volatile ("depd %1,35,4,%0" : "+r" (pa) : "r" (ci));
+#else
+ pa = 0;
+#endif
+ /*
+ ** get CPU coherency index bits
+ ** Grab virtual index [0:11]
+ ** Deposit virt_idx bits into I/O PDIR word
+ */
+ asm volatile ("lci 0(%%sr1, %1), %0" : "=r" (ci) : "r" (vba));
+ asm volatile ("extru %1,19,12,%0" : "+r" (ci) : "r" (ci));
+ asm volatile ("depw %1,15,12,%0" : "+r" (pa) : "r" (ci));
+
+ ((u32 *)pdir_ptr)[0] = (u32) pa;
+
+
+ /* FIXME: PCX_W platforms don't need FDC/SYNC. (eg C360)
+ ** PCX-U/U+ do. (eg C200/C240)
+ ** PCX-T'? Don't know. (eg C110 or similar K-class)
+ **
+ ** See PDC_MODEL/option 0/SW_CAP word for "Non-coherent IO-PDIR bit".
+ ** Hopefully we can patch (NOP) these out at boot time somehow.
+ **
+ ** "Since PCX-U employs an offset hash that is incompatible with
+ ** the real mode coherence index generation of U2, the PDIR entry
+ ** must be flushed to memory to retain coherence."
+ */
+ asm volatile("fdc 0(%0)" : : "r" (pdir_ptr));
+ asm volatile("sync");
+}
+
+/**
+ * ccio_clear_io_tlb - Remove stale entries from the I/O TLB.
+ * @ioc: The I/O Controller.
+ * @iovp: The I/O Virtual Page.
+ * @byte_cnt: The requested number of bytes to be freed from the I/O Pdir.
+ *
+ * Purge invalid I/O PDIR entries from the I/O TLB.
+ *
+ * FIXME: Can we change the byte_cnt to pages_mapped?
+ */
+static CCIO_INLINE void
+ccio_clear_io_tlb(struct ioc *ioc, dma_addr_t iovp, size_t byte_cnt)
+{
+ u32 chain_size = 1 << ioc->chainid_shift;
+
+ iovp &= IOVP_MASK; /* clear offset bits, just want pagenum */
+ byte_cnt += chain_size;
+
+ while(byte_cnt > chain_size) {
+ WRITE_U32(CMD_TLB_PURGE | iovp, &ioc->ioc_hpa->io_command);
+ iovp += chain_size;
+ byte_cnt -= chain_size;
+ }
+}
+
+/**
+ * ccio_mark_invalid - Mark the I/O Pdir entries invalid.
+ * @ioc: The I/O Controller.
+ * @iova: The I/O Virtual Address.
+ * @byte_cnt: The requested number of bytes to be freed from the I/O Pdir.
+ *
+ * Mark the I/O Pdir entries invalid and blow away the corresponding I/O
+ * TLB entries.
+ *
+ * FIXME: at some threshhold it might be "cheaper" to just blow
+ * away the entire I/O TLB instead of individual entries.
+ *
+ * FIXME: Uturn has 256 TLB entries. We don't need to purge every
+ * PDIR entry - just once for each possible TLB entry.
+ * (We do need to maker I/O PDIR entries invalid regardless).
+ *
+ * FIXME: Can we change byte_cnt to pages_mapped?
+ */
+static CCIO_INLINE void
+ccio_mark_invalid(struct ioc *ioc, dma_addr_t iova, size_t byte_cnt)
+{
+ u32 iovp = (u32)CCIO_IOVP(iova);
+ size_t saved_byte_cnt;
+
+ /* round up to nearest page size */
+ saved_byte_cnt = byte_cnt = ROUNDUP(byte_cnt, IOVP_SIZE);
+
+ while(byte_cnt > 0) {
+ /* invalidate one page at a time */
+ unsigned int idx = PDIR_INDEX(iovp);
+ char *pdir_ptr = (char *) &(ioc->pdir_base[idx]);
+
+ BUG_ON(idx >= (ioc->pdir_size / sizeof(u64)));
+ pdir_ptr[7] = 0; /* clear only VALID bit */
+ /*
+ ** FIXME: PCX_W platforms don't need FDC/SYNC. (eg C360)
+ ** PCX-U/U+ do. (eg C200/C240)
+ ** See PDC_MODEL/option 0/SW_CAP for "Non-coherent IO-PDIR bit".
+ **
+ ** Hopefully someone figures out how to patch (NOP) the
+ ** FDC/SYNC out at boot time.
+ */
+ asm volatile("fdc 0(%0)" : : "r" (pdir_ptr[7]));
+
+ iovp += IOVP_SIZE;
+ byte_cnt -= IOVP_SIZE;
+ }
+
+ asm volatile("sync");
+ ccio_clear_io_tlb(ioc, CCIO_IOVP(iova), saved_byte_cnt);
+}
+
+/****************************************************************
+**
+** CCIO dma_ops
+**
+*****************************************************************/
+
+/**
+ * ccio_dma_supported - Verify the IOMMU supports the DMA address range.
+ * @dev: The PCI device.
+ * @mask: A bit mask describing the DMA address range of the device.
+ *
+ * This function implements the pci_dma_supported function.
+ */
+static int
+ccio_dma_supported(struct device *dev, u64 mask)
+{
+ if(dev == NULL) {
+ printk(KERN_ERR MODULE_NAME ": EISA/ISA/et al not supported\n");
+ BUG();
+ return 0;
+ }
+
+ /* only support 32-bit devices (ie PCI/GSC) */
+ return (int)(mask == 0xffffffffUL);
+}
+
+/**
+ * ccio_map_single - Map an address range into the IOMMU.
+ * @dev: The PCI device.
+ * @addr: The start address of the DMA region.
+ * @size: The length of the DMA region.
+ * @direction: The direction of the DMA transaction (to/from device).
+ *
+ * This function implements the pci_map_single function.
+ */
+static dma_addr_t
+ccio_map_single(struct device *dev, void *addr, size_t size,
+ enum dma_data_direction direction)
+{
+ int idx;
+ struct ioc *ioc;
+ unsigned long flags;
+ dma_addr_t iovp;
+ dma_addr_t offset;
+ u64 *pdir_start;
+ unsigned long hint = hint_lookup[(int)direction];
+
+ BUG_ON(!dev);
+ ioc = GET_IOC(dev);
+
+ BUG_ON(size <= 0);
+
+ /* save offset bits */
+ offset = ((unsigned long) addr) & ~IOVP_MASK;
+
+ /* round up to nearest IOVP_SIZE */
+ size = ROUNDUP(size + offset, IOVP_SIZE);
+ spin_lock_irqsave(&ioc->res_lock, flags);
+
+#ifdef CCIO_MAP_STATS
+ ioc->msingle_calls++;
+ ioc->msingle_pages += size >> IOVP_SHIFT;
+#endif
+
+ idx = ccio_alloc_range(ioc, size);
+ iovp = (dma_addr_t)MKIOVP(idx);
+
+ pdir_start = &(ioc->pdir_base[idx]);
+
+ DBG_RUN("%s() 0x%p -> 0x%lx size: %0x%x\n",
+ __FUNCTION__, addr, (long)iovp | offset, size);
+
+ /* If not cacheline aligned, force SAFE_DMA on the whole mess */
+ if((size % L1_CACHE_BYTES) || ((unsigned long)addr % L1_CACHE_BYTES))
+ hint |= HINT_SAFE_DMA;
+
+ while(size > 0) {
+ ccio_io_pdir_entry(pdir_start, KERNEL_SPACE, (unsigned long)addr, hint);
+
+ DBG_RUN(" pdir %p %08x%08x\n",
+ pdir_start,
+ (u32) (((u32 *) pdir_start)[0]),
+ (u32) (((u32 *) pdir_start)[1]));
+ ++pdir_start;
+ addr += IOVP_SIZE;
+ size -= IOVP_SIZE;
+ }
+
+ spin_unlock_irqrestore(&ioc->res_lock, flags);
+
+ /* form complete address */
+ return CCIO_IOVA(iovp, offset);
+}
+
+/**
+ * ccio_unmap_single - Unmap an address range from the IOMMU.
+ * @dev: The PCI device.
+ * @addr: The start address of the DMA region.
+ * @size: The length of the DMA region.
+ * @direction: The direction of the DMA transaction (to/from device).
+ *
+ * This function implements the pci_unmap_single function.
+ */
+static void
+ccio_unmap_single(struct device *dev, dma_addr_t iova, size_t size,
+ enum dma_data_direction direction)
+{
+ struct ioc *ioc;
+ unsigned long flags;
+ dma_addr_t offset = iova & ~IOVP_MASK;
+
+ BUG_ON(!dev);
+ ioc = GET_IOC(dev);
+
+ DBG_RUN("%s() iovp 0x%lx/%x\n",
+ __FUNCTION__, (long)iova, size);
+
+ iova ^= offset; /* clear offset bits */
+ size += offset;
+ size = ROUNDUP(size, IOVP_SIZE);
+
+ spin_lock_irqsave(&ioc->res_lock, flags);
+
+#ifdef CCIO_MAP_STATS
+ ioc->usingle_calls++;
+ ioc->usingle_pages += size >> IOVP_SHIFT;
+#endif
+
+ ccio_mark_invalid(ioc, iova, size);
+ ccio_free_range(ioc, iova, (size >> IOVP_SHIFT));
+ spin_unlock_irqrestore(&ioc->res_lock, flags);
+}
+
+/**
+ * ccio_alloc_consistent - Allocate a consistent DMA mapping.
+ * @dev: The PCI device.
+ * @size: The length of the DMA region.
+ * @dma_handle: The DMA address handed back to the device (not the cpu).
+ *
+ * This function implements the pci_alloc_consistent function.
+ */
+static void *
+ccio_alloc_consistent(struct device *dev, size_t size, dma_addr_t *dma_handle, int flag)
+{
+ void *ret;
+#if 0
+/* GRANT Need to establish hierarchy for non-PCI devs as well
+** and then provide matching gsc_map_xxx() functions for them as well.
+*/
+ if(!hwdev) {
+ /* only support PCI */
+ *dma_handle = 0;
+ return 0;
+ }
+#endif
+ ret = (void *) __get_free_pages(flag, get_order(size));
+
+ if (ret) {
+ memset(ret, 0, size);
+ *dma_handle = ccio_map_single(dev, ret, size, PCI_DMA_BIDIRECTIONAL);
+ }
+
+ return ret;
+}
+
+/**
+ * ccio_free_consistent - Free a consistent DMA mapping.
+ * @dev: The PCI device.
+ * @size: The length of the DMA region.
+ * @cpu_addr: The cpu address returned from the ccio_alloc_consistent.
+ * @dma_handle: The device address returned from the ccio_alloc_consistent.
+ *
+ * This function implements the pci_free_consistent function.
+ */
+static void
+ccio_free_consistent(struct device *dev, size_t size, void *cpu_addr,
+ dma_addr_t dma_handle)
+{
+ ccio_unmap_single(dev, dma_handle, size, 0);
+ free_pages((unsigned long)cpu_addr, get_order(size));
+}
+
+/*
+** Since 0 is a valid pdir_base index value, can't use that
+** to determine if a value is valid or not. Use a flag to indicate
+** the SG list entry contains a valid pdir index.
+*/
+#define PIDE_FLAG 0x80000000UL
+
+#ifdef CCIO_MAP_STATS
+#define IOMMU_MAP_STATS
+#endif
+#include "iommu-helpers.h"
+
+/**
+ * ccio_map_sg - Map the scatter/gather list into the IOMMU.
+ * @dev: The PCI device.
+ * @sglist: The scatter/gather list to be mapped in the IOMMU.
+ * @nents: The number of entries in the scatter/gather list.
+ * @direction: The direction of the DMA transaction (to/from device).
+ *
+ * This function implements the pci_map_sg function.
+ */
+static int
+ccio_map_sg(struct device *dev, struct scatterlist *sglist, int nents,
+ enum dma_data_direction direction)
+{
+ struct ioc *ioc;
+ int coalesced, filled = 0;
+ unsigned long flags;
+ unsigned long hint = hint_lookup[(int)direction];
+ unsigned long prev_len = 0, current_len = 0;
+ int i;
+
+ BUG_ON(!dev);
+ ioc = GET_IOC(dev);
+
+ DBG_RUN_SG("%s() START %d entries\n", __FUNCTION__, nents);
+
+ /* Fast path single entry scatterlists. */
+ if (nents == 1) {
+ sg_dma_address(sglist) = ccio_map_single(dev,
+ (void *)sg_virt_addr(sglist), sglist->length,
+ direction);
+ sg_dma_len(sglist) = sglist->length;
+ return 1;
+ }
+
+ for(i = 0; i < nents; i++)
+ prev_len += sglist[i].length;
+
+ spin_lock_irqsave(&ioc->res_lock, flags);
+
+#ifdef CCIO_MAP_STATS
+ ioc->msg_calls++;
+#endif
+
+ /*
+ ** First coalesce the chunks and allocate I/O pdir space
+ **
+ ** If this is one DMA stream, we can properly map using the
+ ** correct virtual address associated with each DMA page.
+ ** w/o this association, we wouldn't have coherent DMA!
+ ** Access to the virtual address is what forces a two pass algorithm.
+ */
+ coalesced = iommu_coalesce_chunks(ioc, sglist, nents, ccio_alloc_range);
+
+ /*
+ ** Program the I/O Pdir
+ **
+ ** map the virtual addresses to the I/O Pdir
+ ** o dma_address will contain the pdir index
+ ** o dma_len will contain the number of bytes to map
+ ** o page/offset contain the virtual address.
+ */
+ filled = iommu_fill_pdir(ioc, sglist, nents, hint, ccio_io_pdir_entry);
+
+ spin_unlock_irqrestore(&ioc->res_lock, flags);
+
+ BUG_ON(coalesced != filled);
+
+ DBG_RUN_SG("%s() DONE %d mappings\n", __FUNCTION__, filled);
+
+ for (i = 0; i < filled; i++)
+ current_len += sg_dma_len(sglist + i);
+
+ BUG_ON(current_len != prev_len);
+
+ return filled;
+}
+
+/**
+ * ccio_unmap_sg - Unmap the scatter/gather list from the IOMMU.
+ * @dev: The PCI device.
+ * @sglist: The scatter/gather list to be unmapped from the IOMMU.
+ * @nents: The number of entries in the scatter/gather list.
+ * @direction: The direction of the DMA transaction (to/from device).
+ *
+ * This function implements the pci_unmap_sg function.
+ */
+static void
+ccio_unmap_sg(struct device *dev, struct scatterlist *sglist, int nents,
+ enum dma_data_direction direction)
+{
+ struct ioc *ioc;
+
+ BUG_ON(!dev);
+ ioc = GET_IOC(dev);
+
+ DBG_RUN_SG("%s() START %d entries, %08lx,%x\n",
+ __FUNCTION__, nents, sg_virt_addr(sglist), sglist->length);
+
+#ifdef CCIO_MAP_STATS
+ ioc->usg_calls++;
+#endif
+
+ while(sg_dma_len(sglist) && nents--) {
+
+#ifdef CCIO_MAP_STATS
+ ioc->usg_pages += sg_dma_len(sglist) >> PAGE_SHIFT;
+#endif
+ ccio_unmap_single(dev, sg_dma_address(sglist),
+ sg_dma_len(sglist), direction);
+ ++sglist;
+ }
+
+ DBG_RUN_SG("%s() DONE (nents %d)\n", __FUNCTION__, nents);
+}
+
+static struct hppa_dma_ops ccio_ops = {
+ .dma_supported = ccio_dma_supported,
+ .alloc_consistent = ccio_alloc_consistent,
+ .alloc_noncoherent = ccio_alloc_consistent,
+ .free_consistent = ccio_free_consistent,
+ .map_single = ccio_map_single,
+ .unmap_single = ccio_unmap_single,
+ .map_sg = ccio_map_sg,
+ .unmap_sg = ccio_unmap_sg,
+ .dma_sync_single_for_cpu = NULL, /* NOP for U2/Uturn */
+ .dma_sync_single_for_device = NULL, /* NOP for U2/Uturn */
+ .dma_sync_sg_for_cpu = NULL, /* ditto */
+ .dma_sync_sg_for_device = NULL, /* ditto */
+};
+
+#ifdef CONFIG_PROC_FS
+static int proc_append(char *src, int len, char **dst, off_t *offset, int *max)
+{
+ if (len < *offset) {
+ *offset -= len;
+ return 0;
+ }
+ if (*offset > 0) {
+ src += *offset;
+ len -= *offset;
+ *offset = 0;
+ }
+ if (len > *max) {
+ len = *max;
+ }
+ memcpy(*dst, src, len);
+ *dst += len;
+ *max -= len;
+ return (*max == 0);
+}
+
+static int ccio_proc_info(char *buf, char **start, off_t offset, int count,
+ int *eof, void *data)
+{
+ int max = count;
+ char tmp[80]; /* width of an ANSI-standard terminal */
+ struct ioc *ioc = ioc_list;
+
+ while (ioc != NULL) {
+ unsigned int total_pages = ioc->res_size << 3;
+ unsigned long avg = 0, min, max;
+ int j, len;
+
+ len = sprintf(tmp, "%s\n", ioc->name);
+ if (proc_append(tmp, len, &buf, &offset, &count))
+ break;
+
+ len = sprintf(tmp, "Cujo 2.0 bug : %s\n",
+ (ioc->cujo20_bug ? "yes" : "no"));
+ if (proc_append(tmp, len, &buf, &offset, &count))
+ break;
+
+ len = sprintf(tmp, "IO PDIR size : %d bytes (%d entries)\n",
+ total_pages * 8, total_pages);
+ if (proc_append(tmp, len, &buf, &offset, &count))
+ break;
+#ifdef CCIO_MAP_STATS
+ len = sprintf(tmp, "IO PDIR entries : %ld free %ld used (%d%%)\n",
+ total_pages - ioc->used_pages, ioc->used_pages,
+ (int)(ioc->used_pages * 100 / total_pages));
+ if (proc_append(tmp, len, &buf, &offset, &count))
+ break;
+#endif
+ len = sprintf(tmp, "Resource bitmap : %d bytes (%d pages)\n",
+ ioc->res_size, total_pages);
+ if (proc_append(tmp, len, &buf, &offset, &count))
+ break;
+#ifdef CCIO_SEARCH_TIME
+ min = max = ioc->avg_search[0];
+ for(j = 0; j < CCIO_SEARCH_SAMPLE; ++j) {
+ avg += ioc->avg_search[j];
+ if(ioc->avg_search[j] > max)
+ max = ioc->avg_search[j];
+ if(ioc->avg_search[j] < min)
+ min = ioc->avg_search[j];
+ }
+ avg /= CCIO_SEARCH_SAMPLE;
+ len = sprintf(tmp, " Bitmap search : %ld/%ld/%ld (min/avg/max CPU Cycles)\n",
+ min, avg, max);
+ if (proc_append(tmp, len, &buf, &offset, &count))
+ break;
+#endif
+#ifdef CCIO_MAP_STATS
+ len = sprintf(tmp, "pci_map_single(): %8ld calls %8ld pages (avg %d/1000)\n",
+ ioc->msingle_calls, ioc->msingle_pages,
+ (int)((ioc->msingle_pages * 1000)/ioc->msingle_calls));
+ if (proc_append(tmp, len, &buf, &offset, &count))
+ break;
+
+
+ /* KLUGE - unmap_sg calls unmap_single for each mapped page */
+ min = ioc->usingle_calls - ioc->usg_calls;
+ max = ioc->usingle_pages - ioc->usg_pages;
+ len = sprintf(tmp, "pci_unmap_single: %8ld calls %8ld pages (avg %d/1000)\n",
+ min, max, (int)((max * 1000)/min));
+ if (proc_append(tmp, len, &buf, &offset, &count))
+ break;
+
+ len = sprintf(tmp, "pci_map_sg() : %8ld calls %8ld pages (avg %d/1000)\n",
+ ioc->msg_calls, ioc->msg_pages,
+ (int)((ioc->msg_pages * 1000)/ioc->msg_calls));
+ if (proc_append(tmp, len, &buf, &offset, &count))
+ break;
+ len = sprintf(tmp, "pci_unmap_sg() : %8ld calls %8ld pages (avg %d/1000)\n\n\n",
+ ioc->usg_calls, ioc->usg_pages,
+ (int)((ioc->usg_pages * 1000)/ioc->usg_calls));
+ if (proc_append(tmp, len, &buf, &offset, &count))
+ break;
+#endif /* CCIO_MAP_STATS */
+ ioc = ioc->next;
+ }
+
+ if (count == 0) {
+ *eof = 1;
+ }
+ return (max - count);
+}
+
+static int ccio_resource_map(char *buf, char **start, off_t offset, int len,
+ int *eof, void *data)
+{
+ struct ioc *ioc = ioc_list;
+
+ buf[0] = '\0';
+ while (ioc != NULL) {
+ u32 *res_ptr = (u32 *)ioc->res_map;
+ int j;
+
+ for (j = 0; j < (ioc->res_size / sizeof(u32)); j++) {
+ if ((j & 7) == 0)
+ strcat(buf,"\n ");
+ sprintf(buf, "%s %08x", buf, *res_ptr);
+ res_ptr++;
+ }
+ strcat(buf, "\n\n");
+ ioc = ioc->next;
+ break; /* XXX - remove me */
+ }
+
+ return strlen(buf);
+}
+#endif
+
+/**
+ * ccio_find_ioc - Find the ioc in the ioc_list
+ * @hw_path: The hardware path of the ioc.
+ *
+ * This function searches the ioc_list for an ioc that matches
+ * the provide hardware path.
+ */
+static struct ioc * ccio_find_ioc(int hw_path)
+{
+ int i;
+ struct ioc *ioc;
+
+ ioc = ioc_list;
+ for (i = 0; i < ioc_count; i++) {
+ if (ioc->hw_path == hw_path)
+ return ioc;
+
+ ioc = ioc->next;
+ }
+
+ return NULL;
+}
+
+/**
+ * ccio_get_iommu - Find the iommu which controls this device
+ * @dev: The parisc device.
+ *
+ * This function searches through the registered IOMMU's and returns
+ * the appropriate IOMMU for the device based on its hardware path.
+ */
+void * ccio_get_iommu(const struct parisc_device *dev)
+{
+ dev = find_pa_parent_type(dev, HPHW_IOA);
+ if (!dev)
+ return NULL;
+
+ return ccio_find_ioc(dev->hw_path);
+}
+
+#define CUJO_20_STEP 0x10000000 /* inc upper nibble */
+
+/* Cujo 2.0 has a bug which will silently corrupt data being transferred
+ * to/from certain pages. To avoid this happening, we mark these pages
+ * as `used', and ensure that nothing will try to allocate from them.
+ */
+void ccio_cujo20_fixup(struct parisc_device *cujo, u32 iovp)
+{
+ unsigned int idx;
+ struct parisc_device *dev = parisc_parent(cujo);
+ struct ioc *ioc = ccio_get_iommu(dev);
+ u8 *res_ptr;
+
+ ioc->cujo20_bug = 1;
+ res_ptr = ioc->res_map;
+ idx = PDIR_INDEX(iovp) >> 3;
+
+ while (idx < ioc->res_size) {
+ res_ptr[idx] |= 0xff;
+ idx += PDIR_INDEX(CUJO_20_STEP) >> 3;
+ }
+}
+
+#if 0
+/* GRANT - is this needed for U2 or not? */
+
+/*
+** Get the size of the I/O TLB for this I/O MMU.
+**
+** If spa_shift is non-zero (ie probably U2),
+** then calculate the I/O TLB size using spa_shift.
+**
+** Otherwise we are supposed to get the IODC entry point ENTRY TLB
+** and execute it. However, both U2 and Uturn firmware supplies spa_shift.
+** I think only Java (K/D/R-class too?) systems don't do this.
+*/
+static int
+ccio_get_iotlb_size(struct parisc_device *dev)
+{
+ if (dev->spa_shift == 0) {
+ panic("%s() : Can't determine I/O TLB size.\n", __FUNCTION__);
+ }
+ return (1 << dev->spa_shift);
+}
+#else
+
+/* Uturn supports 256 TLB entries */
+#define CCIO_CHAINID_SHIFT 8
+#define CCIO_CHAINID_MASK 0xff
+#endif /* 0 */
+
+/* We *can't* support JAVA (T600). Venture there at your own risk. */
+static struct parisc_device_id ccio_tbl[] = {
+ { HPHW_IOA, HVERSION_REV_ANY_ID, U2_IOA_RUNWAY, 0xb }, /* U2 */
+ { HPHW_IOA, HVERSION_REV_ANY_ID, UTURN_IOA_RUNWAY, 0xb }, /* UTurn */
+ { 0, }
+};
+
+static int ccio_probe(struct parisc_device *dev);
+
+static struct parisc_driver ccio_driver = {
+ .name = "U2:Uturn",
+ .id_table = ccio_tbl,
+ .probe = ccio_probe,
+};
+
+/**
+ * ccio_ioc_init - Initalize the I/O Controller
+ * @ioc: The I/O Controller.
+ *
+ * Initalize the I/O Controller which includes setting up the
+ * I/O Page Directory, the resource map, and initalizing the
+ * U2/Uturn chip into virtual mode.
+ */
+static void
+ccio_ioc_init(struct ioc *ioc)
+{
+ int i;
+ unsigned int iov_order;
+ u32 iova_space_size;
+
+ /*
+ ** Determine IOVA Space size from memory size.
+ **
+ ** Ideally, PCI drivers would register the maximum number
+ ** of DMA they can have outstanding for each device they
+ ** own. Next best thing would be to guess how much DMA
+ ** can be outstanding based on PCI Class/sub-class. Both
+ ** methods still require some "extra" to support PCI
+ ** Hot-Plug/Removal of PCI cards. (aka PCI OLARD).
+ */
+
+ iova_space_size = (u32) (num_physpages / count_parisc_driver(&ccio_driver));
+
+ /* limit IOVA space size to 1MB-1GB */
+
+ if (iova_space_size < (1 << (20 - PAGE_SHIFT))) {
+ iova_space_size = 1 << (20 - PAGE_SHIFT);
+#ifdef __LP64__
+ } else if (iova_space_size > (1 << (30 - PAGE_SHIFT))) {
+ iova_space_size = 1 << (30 - PAGE_SHIFT);
+#endif
+ }
+
+ /*
+ ** iova space must be log2() in size.
+ ** thus, pdir/res_map will also be log2().
+ */
+
+ /* We could use larger page sizes in order to *decrease* the number
+ ** of mappings needed. (ie 8k pages means 1/2 the mappings).
+ **
+ ** Note: Grant Grunder says "Using 8k I/O pages isn't trivial either
+ ** since the pages must also be physically contiguous - typically
+ ** this is the case under linux."
+ */
+
+ iov_order = get_order(iova_space_size << PAGE_SHIFT);
+
+ /* iova_space_size is now bytes, not pages */
+ iova_space_size = 1 << (iov_order + PAGE_SHIFT);
+
+ ioc->pdir_size = (iova_space_size / IOVP_SIZE) * sizeof(u64);
+
+ BUG_ON(ioc->pdir_size >= 4 * 1024 * 1024); /* max pdir size < 4MB */
+
+ /* Verify it's a power of two */
+ BUG_ON((1 << get_order(ioc->pdir_size)) != (ioc->pdir_size >> PAGE_SHIFT));
+
+ DBG_INIT("%s() hpa 0x%lx mem %luMB IOV %dMB (%d bits)\n",
+ __FUNCTION__,
+ ioc->ioc_hpa,
+ (unsigned long) num_physpages >> (20 - PAGE_SHIFT),
+ iova_space_size>>20,
+ iov_order + PAGE_SHIFT);
+
+ ioc->pdir_base = (u64 *)__get_free_pages(GFP_KERNEL,
+ get_order(ioc->pdir_size));
+ if(NULL == ioc->pdir_base) {
+ panic("%s:%s() could not allocate I/O Page Table\n", __FILE__,
+ __FUNCTION__);
+ }
+ memset(ioc->pdir_base, 0, ioc->pdir_size);
+
+ BUG_ON((((unsigned long)ioc->pdir_base) & PAGE_MASK) != (unsigned long)ioc->pdir_base);
+ DBG_INIT(" base %p", ioc->pdir_base);
+
+ /* resource map size dictated by pdir_size */
+ ioc->res_size = (ioc->pdir_size / sizeof(u64)) >> 3;
+ DBG_INIT("%s() res_size 0x%x\n", __FUNCTION__, ioc->res_size);
+
+ ioc->res_map = (u8 *)__get_free_pages(GFP_KERNEL,
+ get_order(ioc->res_size));
+ if(NULL == ioc->res_map) {
+ panic("%s:%s() could not allocate resource map\n", __FILE__,
+ __FUNCTION__);
+ }
+ memset(ioc->res_map, 0, ioc->res_size);
+
+ /* Initialize the res_hint to 16 */
+ ioc->res_hint = 16;
+
+ /* Initialize the spinlock */
+ spin_lock_init(&ioc->res_lock);
+
+ /*
+ ** Chainid is the upper most bits of an IOVP used to determine
+ ** which TLB entry an IOVP will use.
+ */
+ ioc->chainid_shift = get_order(iova_space_size) + PAGE_SHIFT - CCIO_CHAINID_SHIFT;
+ DBG_INIT(" chainid_shift 0x%x\n", ioc->chainid_shift);
+
+ /*
+ ** Initialize IOA hardware
+ */
+ WRITE_U32(CCIO_CHAINID_MASK << ioc->chainid_shift,
+ &ioc->ioc_hpa->io_chain_id_mask);
+
+ WRITE_U32(virt_to_phys(ioc->pdir_base),
+ &ioc->ioc_hpa->io_pdir_base);
+
+ /*
+ ** Go to "Virtual Mode"
+ */
+ WRITE_U32(IOA_NORMAL_MODE, &ioc->ioc_hpa->io_control);
+
+ /*
+ ** Initialize all I/O TLB entries to 0 (Valid bit off).
+ */
+ WRITE_U32(0, &ioc->ioc_hpa->io_tlb_entry_m);
+ WRITE_U32(0, &ioc->ioc_hpa->io_tlb_entry_l);
+
+ for(i = 1 << CCIO_CHAINID_SHIFT; i ; i--) {
+ WRITE_U32((CMD_TLB_DIRECT_WRITE | (i << ioc->chainid_shift)),
+ &ioc->ioc_hpa->io_command);
+ }
+}
+
+static void
+ccio_init_resource(struct resource *res, char *name, unsigned long ioaddr)
+{
+ int result;
+
+ res->parent = NULL;
+ res->flags = IORESOURCE_MEM;
+ res->start = (unsigned long)(signed) __raw_readl(ioaddr) << 16;
+ res->end = (unsigned long)(signed) (__raw_readl(ioaddr + 4) << 16) - 1;
+ res->name = name;
+ if (res->end + 1 == res->start)
+ return;
+ result = request_resource(&iomem_resource, res);
+ if (result < 0) {
+ printk(KERN_ERR "%s: failed to claim CCIO bus address space (%08lx,%08lx)\n",
+ __FILE__, res->start, res->end);
+ }
+}
+
+static void __init ccio_init_resources(struct ioc *ioc)
+{
+ struct resource *res = ioc->mmio_region;
+ char *name = kmalloc(14, GFP_KERNEL);
+
+ sprintf(name, "GSC Bus [%d/]", ioc->hw_path);
+
+ ccio_init_resource(res, name, (unsigned long)&ioc->ioc_hpa->io_io_low);
+ ccio_init_resource(res + 1, name,
+ (unsigned long)&ioc->ioc_hpa->io_io_low_hv);
+}
+
+static int new_ioc_area(struct resource *res, unsigned long size,
+ unsigned long min, unsigned long max, unsigned long align)
+{
+ if (max <= min)
+ return -EBUSY;
+
+ res->start = (max - size + 1) &~ (align - 1);
+ res->end = res->start + size;
+ if (!request_resource(&iomem_resource, res))
+ return 0;
+
+ return new_ioc_area(res, size, min, max - size, align);
+}
+
+static int expand_ioc_area(struct resource *res, unsigned long size,
+ unsigned long min, unsigned long max, unsigned long align)
+{
+ unsigned long start, len;
+
+ if (!res->parent)
+ return new_ioc_area(res, size, min, max, align);
+
+ start = (res->start - size) &~ (align - 1);
+ len = res->end - start + 1;
+ if (start >= min) {
+ if (!adjust_resource(res, start, len))
+ return 0;
+ }
+
+ start = res->start;
+ len = ((size + res->end + align) &~ (align - 1)) - start;
+ if (start + len <= max) {
+ if (!adjust_resource(res, start, len))
+ return 0;
+ }
+
+ return -EBUSY;
+}
+
+/*
+ * Dino calls this function. Beware that we may get called on systems
+ * which have no IOC (725, B180, C160L, etc) but do have a Dino.
+ * So it's legal to find no parent IOC.
+ *
+ * Some other issues: one of the resources in the ioc may be unassigned.
+ */
+int ccio_allocate_resource(const struct parisc_device *dev,
+ struct resource *res, unsigned long size,
+ unsigned long min, unsigned long max, unsigned long align)
+{
+ struct resource *parent = &iomem_resource;
+ struct ioc *ioc = ccio_get_iommu(dev);
+ if (!ioc)
+ goto out;
+
+ parent = ioc->mmio_region;
+ if (parent->parent &&
+ !allocate_resource(parent, res, size, min, max, align, NULL, NULL))
+ return 0;
+
+ if ((parent + 1)->parent &&
+ !allocate_resource(parent + 1, res, size, min, max, align,
+ NULL, NULL))
+ return 0;
+
+ if (!expand_ioc_area(parent, size, min, max, align)) {
+ __raw_writel(((parent->start)>>16) | 0xffff0000,
+ (unsigned long)&(ioc->ioc_hpa->io_io_low));
+ __raw_writel(((parent->end)>>16) | 0xffff0000,
+ (unsigned long)&(ioc->ioc_hpa->io_io_high));
+ } else if (!expand_ioc_area(parent + 1, size, min, max, align)) {
+ parent++;
+ __raw_writel(((parent->start)>>16) | 0xffff0000,
+ (unsigned long)&(ioc->ioc_hpa->io_io_low_hv));
+ __raw_writel(((parent->end)>>16) | 0xffff0000,
+ (unsigned long)&(ioc->ioc_hpa->io_io_high_hv));
+ } else {
+ return -EBUSY;
+ }
+
+ out:
+ return allocate_resource(parent, res, size, min, max, align, NULL,NULL);
+}
+
+int ccio_request_resource(const struct parisc_device *dev,
+ struct resource *res)
+{
+ struct resource *parent;
+ struct ioc *ioc = ccio_get_iommu(dev);
+
+ if (!ioc) {
+ parent = &iomem_resource;
+ } else if ((ioc->mmio_region->start <= res->start) &&
+ (res->end <= ioc->mmio_region->end)) {
+ parent = ioc->mmio_region;
+ } else if (((ioc->mmio_region + 1)->start <= res->start) &&
+ (res->end <= (ioc->mmio_region + 1)->end)) {
+ parent = ioc->mmio_region + 1;
+ } else {
+ return -EBUSY;
+ }
+
+ return request_resource(parent, res);
+}
+
+/**
+ * ccio_probe - Determine if ccio should claim this device.
+ * @dev: The device which has been found
+ *
+ * Determine if ccio should claim this chip (return 0) or not (return 1).
+ * If so, initialize the chip and tell other partners in crime they
+ * have work to do.
+ */
+static int ccio_probe(struct parisc_device *dev)
+{
+ int i;
+ struct ioc *ioc, **ioc_p = &ioc_list;
+
+ ioc = kmalloc(sizeof(struct ioc), GFP_KERNEL);
+ if (ioc == NULL) {
+ printk(KERN_ERR MODULE_NAME ": memory allocation failure\n");
+ return 1;
+ }
+ memset(ioc, 0, sizeof(struct ioc));
+
+ ioc->name = dev->id.hversion == U2_IOA_RUNWAY ? "U2" : "UTurn";
+
+ printk(KERN_INFO "Found %s at 0x%lx\n", ioc->name, dev->hpa);
+
+ for (i = 0; i < ioc_count; i++) {
+ ioc_p = &(*ioc_p)->next;
+ }
+ *ioc_p = ioc;
+
+ ioc->hw_path = dev->hw_path;
+ ioc->ioc_hpa = (struct ioa_registers *)dev->hpa;
+ ccio_ioc_init(ioc);
+ ccio_init_resources(ioc);
+ hppa_dma_ops = &ccio_ops;
+ dev->dev.platform_data = kmalloc(sizeof(struct pci_hba_data), GFP_KERNEL);
+
+ /* if this fails, no I/O cards will work, so may as well bug */
+ BUG_ON(dev->dev.platform_data == NULL);
+ HBA_DATA(dev->dev.platform_data)->iommu = ioc;
+
+
+ if (ioc_count == 0) {
+ /* FIXME: Create separate entries for each ioc */
+ create_proc_read_entry(MODULE_NAME, S_IRWXU, proc_runway_root,
+ ccio_proc_info, NULL);
+ create_proc_read_entry(MODULE_NAME"-bitmap", S_IRWXU,
+ proc_runway_root, ccio_resource_map, NULL);
+ }
+
+ ioc_count++;
+
+ parisc_vmerge_boundary = IOVP_SIZE;
+ parisc_vmerge_max_size = BITS_PER_LONG * IOVP_SIZE;
+ parisc_has_iommu();
+ return 0;
+}
+
+/**
+ * ccio_init - ccio initalization procedure.
+ *
+ * Register this driver.
+ */
+void __init ccio_init(void)
+{
+ register_parisc_driver(&ccio_driver);
+}
+
diff --git a/drivers/parisc/ccio-rm-dma.c b/drivers/parisc/ccio-rm-dma.c
new file mode 100644
index 000000000000..57e6385976e2
--- /dev/null
+++ b/drivers/parisc/ccio-rm-dma.c
@@ -0,0 +1,201 @@
+/*
+ * ccio-rm-dma.c:
+ * DMA management routines for first generation cache-coherent machines.
+ * "Real Mode" operation refers to U2/Uturn chip operation. The chip
+ * can perform coherency checks w/o using the I/O MMU. That's all we
+ * need until support for more than 4GB phys mem is needed.
+ *
+ * This is the trivial case - basically what x86 does.
+ *
+ * Drawbacks of using Real Mode are:
+ * o outbound DMA is slower since one isn't using the prefetching
+ * U2 can do for outbound DMA.
+ * o Ability to do scatter/gather in HW is also lost.
+ * o only known to work with PCX-W processor. (eg C360)
+ * (PCX-U/U+ are not coherent with U2 in real mode.)
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ *
+ * Original version/author:
+ * CVSROOT=:pserver:anonymous@198.186.203.37:/cvsroot/linux-parisc
+ * cvs -z3 co linux/arch/parisc/kernel/dma-rm.c
+ *
+ * (C) Copyright 2000 Philipp Rumpf <prumpf@tux.org>
+ *
+ *
+ * Adopted for The Puffin Group's parisc-linux port by Grant Grundler.
+ * (C) Copyright 2000 Grant Grundler <grundler@puffin.external.hp.com>
+ *
+ */
+
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/string.h>
+#include <linux/pci.h>
+
+#include <asm/uaccess.h>
+
+#include <asm/io.h>
+#include <asm/hardware.h>
+#include <asm/page.h>
+
+/* Only chose "ccio" since that's what HP-UX calls it....
+** Make it easier for folks to migrate from one to the other :^)
+*/
+#define MODULE_NAME "ccio"
+
+#define U2_IOA_RUNWAY 0x580
+#define U2_BC_GSC 0x501
+#define UTURN_IOA_RUNWAY 0x581
+#define UTURN_BC_GSC 0x502
+
+#define IS_U2(id) ( \
+ (((id)->hw_type == HPHW_IOA) && ((id)->hversion == U2_IOA_RUNWAY)) || \
+ (((id)->hw_type == HPHW_BCPORT) && ((id)->hversion == U2_BC_GSC)) \
+)
+
+#define IS_UTURN(id) ( \
+ (((id)->hw_type == HPHW_IOA) && ((id)->hversion == UTURN_IOA_RUNWAY)) || \
+ (((id)->hw_type == HPHW_BCPORT) && ((id)->hversion == UTURN_BC_GSC)) \
+)
+
+static int ccio_dma_supported( struct pci_dev *dev, u64 mask)
+{
+ if (dev == NULL) {
+ printk(KERN_ERR MODULE_NAME ": EISA/ISA/et al not supported\n");
+ BUG();
+ return(0);
+ }
+
+ /* only support 32-bit devices (ie PCI/GSC) */
+ return((int) (mask >= 0xffffffffUL));
+}
+
+
+static void *ccio_alloc_consistent(struct pci_dev *dev, size_t size,
+ dma_addr_t *handle)
+{
+ void *ret;
+
+ ret = (void *)__get_free_pages(GFP_ATOMIC, get_order(size));
+
+ if (ret != NULL) {
+ memset(ret, 0, size);
+ *handle = virt_to_phys(ret);
+ }
+ return ret;
+}
+
+static void ccio_free_consistent(struct pci_dev *dev, size_t size,
+ void *vaddr, dma_addr_t handle)
+{
+ free_pages((unsigned long)vaddr, get_order(size));
+}
+
+static dma_addr_t ccio_map_single(struct pci_dev *dev, void *ptr, size_t size,
+ int direction)
+{
+ return virt_to_phys(ptr);
+}
+
+static void ccio_unmap_single(struct pci_dev *dev, dma_addr_t dma_addr,
+ size_t size, int direction)
+{
+ /* Nothing to do */
+}
+
+
+static int ccio_map_sg(struct pci_dev *dev, struct scatterlist *sglist, int nents, int direction)
+{
+ int tmp = nents;
+
+ /* KISS: map each buffer separately. */
+ while (nents) {
+ sg_dma_address(sglist) = ccio_map_single(dev, sglist->address, sglist->length, direction);
+ sg_dma_len(sglist) = sglist->length;
+ nents--;
+ sglist++;
+ }
+
+ return tmp;
+}
+
+
+static void ccio_unmap_sg(struct pci_dev *dev, struct scatterlist *sglist, int nents, int direction)
+{
+#if 0
+ while (nents) {
+ ccio_unmap_single(dev, sg_dma_address(sglist), sg_dma_len(sglist), direction);
+ nents--;
+ sglist++;
+ }
+ return;
+#else
+ /* Do nothing (copied from current ccio_unmap_single() :^) */
+#endif
+}
+
+
+static struct pci_dma_ops ccio_ops = {
+ ccio_dma_supported,
+ ccio_alloc_consistent,
+ ccio_free_consistent,
+ ccio_map_single,
+ ccio_unmap_single,
+ ccio_map_sg,
+ ccio_unmap_sg,
+ NULL, /* dma_sync_single_for_cpu : NOP for U2 */
+ NULL, /* dma_sync_single_for_device : NOP for U2 */
+ NULL, /* dma_sync_sg_for_cpu : ditto */
+ NULL, /* dma_sync_sg_for_device : ditto */
+};
+
+
+/*
+** Determine if u2 should claim this chip (return 0) or not (return 1).
+** If so, initialize the chip and tell other partners in crime they
+** have work to do.
+*/
+static int
+ccio_probe(struct parisc_device *dev)
+{
+ printk(KERN_INFO "%s found %s at 0x%lx\n", MODULE_NAME,
+ dev->id.hversion == U2_BC_GSC ? "U2" : "UTurn",
+ dev->hpa);
+
+/*
+** FIXME - should check U2 registers to verify it's really running
+** in "Real Mode".
+*/
+
+#if 0
+/* will need this for "Virtual Mode" operation */
+ ccio_hw_init(ccio_dev);
+ ccio_common_init(ccio_dev);
+#endif
+ hppa_dma_ops = &ccio_ops;
+ return 0;
+}
+
+static struct parisc_device_id ccio_tbl[] = {
+ { HPHW_BCPORT, HVERSION_REV_ANY_ID, U2_BC_GSC, 0xc },
+ { HPHW_BCPORT, HVERSION_REV_ANY_ID, UTURN_BC_GSC, 0xc },
+ { 0, }
+};
+
+static struct parisc_driver ccio_driver = {
+ .name = "U2/Uturn",
+ .id_table = ccio_tbl,
+ .probe = ccio_probe,
+};
+
+void __init ccio_init(void)
+{
+ register_parisc_driver(&ccio_driver);
+}
diff --git a/drivers/parisc/dino.c b/drivers/parisc/dino.c
new file mode 100644
index 000000000000..b0d2a73d1d47
--- /dev/null
+++ b/drivers/parisc/dino.c
@@ -0,0 +1,1044 @@
+/*
+** DINO manager
+**
+** (c) Copyright 1999 Red Hat Software
+** (c) Copyright 1999 SuSE GmbH
+** (c) Copyright 1999,2000 Hewlett-Packard Company
+** (c) Copyright 2000 Grant Grundler
+**
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License as published by
+** the Free Software Foundation; either version 2 of the License, or
+** (at your option) any later version.
+**
+** This module provides access to Dino PCI bus (config/IOport spaces)
+** and helps manage Dino IRQ lines.
+**
+** Dino interrupt handling is a bit complicated.
+** Dino always writes to the broadcast EIR via irr0 for now.
+** (BIG WARNING: using broadcast EIR is a really bad thing for SMP!)
+** Only one processor interrupt is used for the 11 IRQ line
+** inputs to dino.
+**
+** The different between Built-in Dino and Card-Mode
+** dino is in chip initialization and pci device initialization.
+**
+** Linux drivers can only use Card-Mode Dino if pci devices I/O port
+** BARs are configured and used by the driver. Programming MMIO address
+** requires substantial knowledge of available Host I/O address ranges
+** is currently not supported. Port/Config accessor functions are the
+** same. "BIOS" differences are handled within the existing routines.
+*/
+
+/* Changes :
+** 2001-06-14 : Clement Moyroud (moyroudc@esiee.fr)
+** - added support for the integrated RS232.
+*/
+
+/*
+** TODO: create a virtual address for each Dino HPA.
+** GSC code might be able to do this since IODC data tells us
+** how many pages are used. PCI subsystem could (must?) do this
+** for PCI drivers devices which implement/use MMIO registers.
+*/
+
+#include <linux/config.h>
+#include <linux/delay.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h> /* for struct irqaction */
+#include <linux/spinlock.h> /* for spinlock_t and prototypes */
+
+#include <asm/pdc.h>
+#include <asm/page.h>
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/hardware.h>
+
+#include "gsc.h"
+
+#undef DINO_DEBUG
+
+#ifdef DINO_DEBUG
+#define DBG(x...) printk(x)
+#else
+#define DBG(x...)
+#endif
+
+/*
+** Config accessor functions only pass in the 8-bit bus number
+** and not the 8-bit "PCI Segment" number. Each Dino will be
+** assigned a PCI bus number based on "when" it's discovered.
+**
+** The "secondary" bus number is set to this before calling
+** pci_scan_bus(). If any PPB's are present, the scan will
+** discover them and update the "secondary" and "subordinate"
+** fields in Dino's pci_bus structure.
+**
+** Changes in the configuration *will* result in a different
+** bus number for each dino.
+*/
+
+#define is_card_dino(id) ((id)->hw_type == HPHW_A_DMA)
+
+#define DINO_IAR0 0x004
+#define DINO_IODC_ADDR 0x008
+#define DINO_IODC_DATA_0 0x008
+#define DINO_IODC_DATA_1 0x008
+#define DINO_IRR0 0x00C
+#define DINO_IAR1 0x010
+#define DINO_IRR1 0x014
+#define DINO_IMR 0x018
+#define DINO_IPR 0x01C
+#define DINO_TOC_ADDR 0x020
+#define DINO_ICR 0x024
+#define DINO_ILR 0x028
+#define DINO_IO_COMMAND 0x030
+#define DINO_IO_STATUS 0x034
+#define DINO_IO_CONTROL 0x038
+#define DINO_IO_GSC_ERR_RESP 0x040
+#define DINO_IO_ERR_INFO 0x044
+#define DINO_IO_PCI_ERR_RESP 0x048
+#define DINO_IO_FBB_EN 0x05c
+#define DINO_IO_ADDR_EN 0x060
+#define DINO_PCI_ADDR 0x064
+#define DINO_CONFIG_DATA 0x068
+#define DINO_IO_DATA 0x06c
+#define DINO_MEM_DATA 0x070 /* Dino 3.x only */
+#define DINO_GSC2X_CONFIG 0x7b4
+#define DINO_GMASK 0x800
+#define DINO_PAMR 0x804
+#define DINO_PAPR 0x808
+#define DINO_DAMODE 0x80c
+#define DINO_PCICMD 0x810
+#define DINO_PCISTS 0x814
+#define DINO_MLTIM 0x81c
+#define DINO_BRDG_FEAT 0x820
+#define DINO_PCIROR 0x824
+#define DINO_PCIWOR 0x828
+#define DINO_TLTIM 0x830
+
+#define DINO_IRQS 11 /* bits 0-10 are architected */
+#define DINO_IRR_MASK 0x5ff /* only 10 bits are implemented */
+
+#define DINO_MASK_IRQ(x) (1<<(x))
+
+#define PCIINTA 0x001
+#define PCIINTB 0x002
+#define PCIINTC 0x004
+#define PCIINTD 0x008
+#define PCIINTE 0x010
+#define PCIINTF 0x020
+#define GSCEXTINT 0x040
+/* #define xxx 0x080 - bit 7 is "default" */
+/* #define xxx 0x100 - bit 8 not used */
+/* #define xxx 0x200 - bit 9 not used */
+#define RS232INT 0x400
+
+struct dino_device
+{
+ struct pci_hba_data hba; /* 'C' inheritance - must be first */
+ spinlock_t dinosaur_pen;
+ unsigned long txn_addr; /* EIR addr to generate interrupt */
+ u32 txn_data; /* EIR data assign to each dino */
+ u32 imr; /* IRQ's which are enabled */
+ int global_irq[12]; /* map IMR bit to global irq */
+#ifdef DINO_DEBUG
+ unsigned int dino_irr0; /* save most recent IRQ line stat */
+#endif
+};
+
+/* Looks nice and keeps the compiler happy */
+#define DINO_DEV(d) ((struct dino_device *) d)
+
+
+/*
+ * Dino Configuration Space Accessor Functions
+ */
+
+#define DINO_CFG_TOK(bus,dfn,pos) ((u32) ((bus)<<16 | (dfn)<<8 | (pos)))
+
+/*
+ * keep the current highest bus count to assist in allocating busses. This
+ * tries to keep a global bus count total so that when we discover an
+ * entirely new bus, it can be given a unique bus number.
+ */
+static int dino_current_bus = 0;
+
+static int dino_cfg_read(struct pci_bus *bus, unsigned int devfn, int where,
+ int size, u32 *val)
+{
+ struct dino_device *d = DINO_DEV(parisc_walk_tree(bus->bridge));
+ u32 local_bus = (bus->parent == NULL) ? 0 : bus->secondary;
+ u32 v = DINO_CFG_TOK(local_bus, devfn, where & ~3);
+ void __iomem *base_addr = d->hba.base_addr;
+ unsigned long flags;
+
+ spin_lock_irqsave(&d->dinosaur_pen, flags);
+
+ /* tell HW which CFG address */
+ __raw_writel(v, base_addr + DINO_PCI_ADDR);
+
+ /* generate cfg read cycle */
+ if (size == 1) {
+ *val = readb(base_addr + DINO_CONFIG_DATA + (where & 3));
+ } else if (size == 2) {
+ *val = readw(base_addr + DINO_CONFIG_DATA + (where & 2));
+ } else if (size == 4) {
+ *val = readl(base_addr + DINO_CONFIG_DATA);
+ }
+
+ spin_unlock_irqrestore(&d->dinosaur_pen, flags);
+ return 0;
+}
+
+/*
+ * Dino address stepping "feature":
+ * When address stepping, Dino attempts to drive the bus one cycle too soon
+ * even though the type of cycle (config vs. MMIO) might be different.
+ * The read of Ven/Prod ID is harmless and avoids Dino's address stepping.
+ */
+static int dino_cfg_write(struct pci_bus *bus, unsigned int devfn, int where,
+ int size, u32 val)
+{
+ struct dino_device *d = DINO_DEV(parisc_walk_tree(bus->bridge));
+ u32 local_bus = (bus->parent == NULL) ? 0 : bus->secondary;
+ u32 v = DINO_CFG_TOK(local_bus, devfn, where & ~3);
+ void __iomem *base_addr = d->hba.base_addr;
+ unsigned long flags;
+
+ spin_lock_irqsave(&d->dinosaur_pen, flags);
+
+ /* avoid address stepping feature */
+ __raw_writel(v & 0xffffff00, base_addr + DINO_PCI_ADDR);
+ __raw_readl(base_addr + DINO_CONFIG_DATA);
+
+ /* tell HW which CFG address */
+ __raw_writel(v, base_addr + DINO_PCI_ADDR);
+ /* generate cfg read cycle */
+ if (size == 1) {
+ writeb(val, base_addr + DINO_CONFIG_DATA + (where & 3));
+ } else if (size == 2) {
+ writew(val, base_addr + DINO_CONFIG_DATA + (where & 2));
+ } else if (size == 4) {
+ writel(val, base_addr + DINO_CONFIG_DATA);
+ }
+
+ spin_unlock_irqrestore(&d->dinosaur_pen, flags);
+ return 0;
+}
+
+static struct pci_ops dino_cfg_ops = {
+ .read = dino_cfg_read,
+ .write = dino_cfg_write,
+};
+
+
+/*
+ * Dino "I/O Port" Space Accessor Functions
+ *
+ * Many PCI devices don't require use of I/O port space (eg Tulip,
+ * NCR720) since they export the same registers to both MMIO and
+ * I/O port space. Performance is going to stink if drivers use
+ * I/O port instead of MMIO.
+ */
+
+#define DINO_PORT_IN(type, size, mask) \
+static u##size dino_in##size (struct pci_hba_data *d, u16 addr) \
+{ \
+ u##size v; \
+ unsigned long flags; \
+ spin_lock_irqsave(&(DINO_DEV(d)->dinosaur_pen), flags); \
+ /* tell HW which IO Port address */ \
+ __raw_writel((u32) addr, d->base_addr + DINO_PCI_ADDR); \
+ /* generate I/O PORT read cycle */ \
+ v = read##type(d->base_addr+DINO_IO_DATA+(addr&mask)); \
+ spin_unlock_irqrestore(&(DINO_DEV(d)->dinosaur_pen), flags); \
+ return v; \
+}
+
+DINO_PORT_IN(b, 8, 3)
+DINO_PORT_IN(w, 16, 2)
+DINO_PORT_IN(l, 32, 0)
+
+#define DINO_PORT_OUT(type, size, mask) \
+static void dino_out##size (struct pci_hba_data *d, u16 addr, u##size val) \
+{ \
+ unsigned long flags; \
+ spin_lock_irqsave(&(DINO_DEV(d)->dinosaur_pen), flags); \
+ /* tell HW which IO port address */ \
+ __raw_writel((u32) addr, d->base_addr + DINO_PCI_ADDR); \
+ /* generate cfg write cycle */ \
+ write##type(val, d->base_addr+DINO_IO_DATA+(addr&mask)); \
+ spin_unlock_irqrestore(&(DINO_DEV(d)->dinosaur_pen), flags); \
+}
+
+DINO_PORT_OUT(b, 8, 3)
+DINO_PORT_OUT(w, 16, 2)
+DINO_PORT_OUT(l, 32, 0)
+
+struct pci_port_ops dino_port_ops = {
+ .inb = dino_in8,
+ .inw = dino_in16,
+ .inl = dino_in32,
+ .outb = dino_out8,
+ .outw = dino_out16,
+ .outl = dino_out32
+};
+
+static void dino_disable_irq(unsigned int irq)
+{
+ struct dino_device *dino_dev = irq_desc[irq].handler_data;
+ int local_irq = gsc_find_local_irq(irq, dino_dev->global_irq, irq);
+
+ DBG(KERN_WARNING "%s(0x%p, %d)\n", __FUNCTION__, irq_dev, irq);
+
+ /* Clear the matching bit in the IMR register */
+ dino_dev->imr &= ~(DINO_MASK_IRQ(local_irq));
+ __raw_writel(dino_dev->imr, dino_dev->hba.base_addr+DINO_IMR);
+}
+
+static void dino_enable_irq(unsigned int irq)
+{
+ struct dino_device *dino_dev = irq_desc[irq].handler_data;
+ int local_irq = gsc_find_local_irq(irq, dino_dev->global_irq, irq);
+ u32 tmp;
+
+ DBG(KERN_WARNING "%s(0x%p, %d)\n", __FUNCTION__, irq_dev, irq);
+
+ /*
+ ** clear pending IRQ bits
+ **
+ ** This does NOT change ILR state!
+ ** See comment below for ILR usage.
+ */
+ __raw_readl(dino_dev->hba.base_addr+DINO_IPR);
+
+ /* set the matching bit in the IMR register */
+ dino_dev->imr |= DINO_MASK_IRQ(local_irq); /* used in dino_isr() */
+ __raw_writel( dino_dev->imr, dino_dev->hba.base_addr+DINO_IMR);
+
+ /* Emulate "Level Triggered" Interrupt
+ ** Basically, a driver is blowing it if the IRQ line is asserted
+ ** while the IRQ is disabled. But tulip.c seems to do that....
+ ** Give 'em a kluge award and a nice round of applause!
+ **
+ ** The gsc_write will generate an interrupt which invokes dino_isr().
+ ** dino_isr() will read IPR and find nothing. But then catch this
+ ** when it also checks ILR.
+ */
+ tmp = __raw_readl(dino_dev->hba.base_addr+DINO_ILR);
+ if (tmp & DINO_MASK_IRQ(local_irq)) {
+ DBG(KERN_WARNING "%s(): IRQ asserted! (ILR 0x%x)\n",
+ __FUNCTION__, tmp);
+ gsc_writel(dino_dev->txn_data, dino_dev->txn_addr);
+ }
+}
+
+static unsigned int dino_startup_irq(unsigned int irq)
+{
+ dino_enable_irq(irq);
+ return 0;
+}
+
+static struct hw_interrupt_type dino_interrupt_type = {
+ .typename = "GSC-PCI",
+ .startup = dino_startup_irq,
+ .shutdown = dino_disable_irq,
+ .enable = dino_enable_irq,
+ .disable = dino_disable_irq,
+ .ack = no_ack_irq,
+ .end = no_end_irq,
+};
+
+
+/*
+ * Handle a Processor interrupt generated by Dino.
+ *
+ * ilr_loop counter is a kluge to prevent a "stuck" IRQ line from
+ * wedging the CPU. Could be removed or made optional at some point.
+ */
+static irqreturn_t
+dino_isr(int irq, void *intr_dev, struct pt_regs *regs)
+{
+ struct dino_device *dino_dev = intr_dev;
+ u32 mask;
+ int ilr_loop = 100;
+
+ /* read and acknowledge pending interrupts */
+#ifdef DINO_DEBUG
+ dino_dev->dino_irr0 =
+#endif
+ mask = __raw_readl(dino_dev->hba.base_addr+DINO_IRR0) & DINO_IRR_MASK;
+
+ if (mask == 0)
+ return IRQ_NONE;
+
+ilr_again:
+ do {
+ int local_irq = __ffs(mask);
+ int irq = dino_dev->global_irq[local_irq];
+ DBG(KERN_DEBUG "%s(%d, %p) mask 0x%x\n",
+ __FUNCTION__, irq, intr_dev, mask);
+ __do_IRQ(irq, regs);
+ mask &= ~(1 << local_irq);
+ } while (mask);
+
+ /* Support for level triggered IRQ lines.
+ **
+ ** Dropping this support would make this routine *much* faster.
+ ** But since PCI requires level triggered IRQ line to share lines...
+ ** device drivers may assume lines are level triggered (and not
+ ** edge triggered like EISA/ISA can be).
+ */
+ mask = __raw_readl(dino_dev->hba.base_addr+DINO_ILR) & dino_dev->imr;
+ if (mask) {
+ if (--ilr_loop > 0)
+ goto ilr_again;
+ printk(KERN_ERR "Dino 0x%p: stuck interrupt %d\n",
+ dino_dev->hba.base_addr, mask);
+ return IRQ_NONE;
+ }
+ return IRQ_HANDLED;
+}
+
+static void dino_assign_irq(struct dino_device *dino, int local_irq, int *irqp)
+{
+ int irq = gsc_assign_irq(&dino_interrupt_type, dino);
+ if (irq == NO_IRQ)
+ return;
+
+ *irqp = irq;
+ dino->global_irq[local_irq] = irq;
+}
+
+static void dino_choose_irq(struct parisc_device *dev, void *ctrl)
+{
+ int irq;
+ struct dino_device *dino = ctrl;
+
+ switch (dev->id.sversion) {
+ case 0x00084: irq = 8; break; /* PS/2 */
+ case 0x0008c: irq = 10; break; /* RS232 */
+ case 0x00096: irq = 8; break; /* PS/2 */
+ default: return; /* Unknown */
+ }
+
+ dino_assign_irq(dino, irq, &dev->irq);
+}
+
+static void __init
+dino_bios_init(void)
+{
+ DBG("dino_bios_init\n");
+}
+
+/*
+ * dino_card_setup - Set up the memory space for a Dino in card mode.
+ * @bus: the bus under this dino
+ *
+ * Claim an 8MB chunk of unused IO space and call the generic PCI routines
+ * to set up the addresses of the devices on this bus.
+ */
+#define _8MB 0x00800000UL
+static void __init
+dino_card_setup(struct pci_bus *bus, void __iomem *base_addr)
+{
+ int i;
+ struct dino_device *dino_dev = DINO_DEV(parisc_walk_tree(bus->bridge));
+ struct resource *res;
+ char name[128];
+ int size;
+
+ res = &dino_dev->hba.lmmio_space;
+ res->flags = IORESOURCE_MEM;
+ size = scnprintf(name, sizeof(name), "Dino LMMIO (%s)",
+ bus->bridge->bus_id);
+ res->name = kmalloc(size+1, GFP_KERNEL);
+ if(res->name)
+ strcpy((char *)res->name, name);
+ else
+ res->name = dino_dev->hba.lmmio_space.name;
+
+
+ if (ccio_allocate_resource(dino_dev->hba.dev, res, _8MB,
+ F_EXTEND(0xf0000000UL) | _8MB,
+ F_EXTEND(0xffffffffUL) &~ _8MB, _8MB) < 0) {
+ struct list_head *ln, *tmp_ln;
+
+ printk(KERN_ERR "Dino: cannot attach bus %s\n",
+ bus->bridge->bus_id);
+ /* kill the bus, we can't do anything with it */
+ list_for_each_safe(ln, tmp_ln, &bus->devices) {
+ struct pci_dev *dev = pci_dev_b(ln);
+
+ list_del(&dev->global_list);
+ list_del(&dev->bus_list);
+ }
+
+ return;
+ }
+ bus->resource[1] = res;
+ bus->resource[0] = &(dino_dev->hba.io_space);
+
+ /* Now tell dino what range it has */
+ for (i = 1; i < 31; i++) {
+ if (res->start == F_EXTEND(0xf0000000UL | (i * _8MB)))
+ break;
+ }
+ DBG("DINO GSC WRITE i=%d, start=%lx, dino addr = %lx\n",
+ i, res->start, base_addr + DINO_IO_ADDR_EN);
+ __raw_writel(1 << i, base_addr + DINO_IO_ADDR_EN);
+}
+
+static void __init
+dino_card_fixup(struct pci_dev *dev)
+{
+ u32 irq_pin;
+
+ /*
+ ** REVISIT: card-mode PCI-PCI expansion chassis do exist.
+ ** Not sure they were ever productized.
+ ** Die here since we'll die later in dino_inb() anyway.
+ */
+ if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) {
+ panic("Card-Mode Dino: PCI-PCI Bridge not supported\n");
+ }
+
+ /*
+ ** Set Latency Timer to 0xff (not a shared bus)
+ ** Set CACHELINE_SIZE.
+ */
+ dino_cfg_write(dev->bus, dev->devfn,
+ PCI_CACHE_LINE_SIZE, 2, 0xff00 | L1_CACHE_BYTES/4);
+
+ /*
+ ** Program INT_LINE for card-mode devices.
+ ** The cards are hardwired according to this algorithm.
+ ** And it doesn't matter if PPB's are present or not since
+ ** the IRQ lines bypass the PPB.
+ **
+ ** "-1" converts INTA-D (1-4) to PCIINTA-D (0-3) range.
+ ** The additional "-1" adjusts for skewing the IRQ<->slot.
+ */
+ dino_cfg_read(dev->bus, dev->devfn, PCI_INTERRUPT_PIN, 1, &irq_pin);
+ dev->irq = (irq_pin + PCI_SLOT(dev->devfn) - 1) % 4 ;
+
+ /* Shouldn't really need to do this but it's in case someone tries
+ ** to bypass PCI services and look at the card themselves.
+ */
+ dino_cfg_write(dev->bus, dev->devfn, PCI_INTERRUPT_LINE, 1, dev->irq);
+}
+
+/* The alignment contraints for PCI bridges under dino */
+#define DINO_BRIDGE_ALIGN 0x100000
+
+
+static void __init
+dino_fixup_bus(struct pci_bus *bus)
+{
+ struct list_head *ln;
+ struct pci_dev *dev;
+ struct dino_device *dino_dev = DINO_DEV(parisc_walk_tree(bus->bridge));
+ int port_base = HBA_PORT_BASE(dino_dev->hba.hba_num);
+
+ DBG(KERN_WARNING "%s(0x%p) bus %d platform_data 0x%p\n",
+ __FUNCTION__, bus, bus->secondary,
+ bus->bridge->platform_data);
+
+ /* Firmware doesn't set up card-mode dino, so we have to */
+ if (is_card_dino(&dino_dev->hba.dev->id)) {
+ dino_card_setup(bus, dino_dev->hba.base_addr);
+ } else if(bus->parent == NULL) {
+ /* must have a dino above it, reparent the resources
+ * into the dino window */
+ int i;
+ struct resource *res = &dino_dev->hba.lmmio_space;
+
+ bus->resource[0] = &(dino_dev->hba.io_space);
+ for(i = 0; i < DINO_MAX_LMMIO_RESOURCES; i++) {
+ if(res[i].flags == 0)
+ break;
+ bus->resource[i+1] = &res[i];
+ }
+
+ } else if(bus->self) {
+ int i;
+
+ pci_read_bridge_bases(bus);
+
+
+ for(i = PCI_BRIDGE_RESOURCES; i < PCI_NUM_RESOURCES; i++) {
+ if((bus->self->resource[i].flags &
+ (IORESOURCE_IO | IORESOURCE_MEM)) == 0)
+ continue;
+
+ if(bus->self->resource[i].flags & IORESOURCE_MEM) {
+ /* There's a quirk to alignment of
+ * bridge memory resources: the start
+ * is the alignment and start-end is
+ * the size. However, firmware will
+ * have assigned start and end, so we
+ * need to take this into account */
+ bus->self->resource[i].end = bus->self->resource[i].end - bus->self->resource[i].start + DINO_BRIDGE_ALIGN;
+ bus->self->resource[i].start = DINO_BRIDGE_ALIGN;
+
+ }
+
+ DBG("DEBUG %s assigning %d [0x%lx,0x%lx]\n",
+ bus->self->dev.bus_id, i,
+ bus->self->resource[i].start,
+ bus->self->resource[i].end);
+ pci_assign_resource(bus->self, i);
+ DBG("DEBUG %s after assign %d [0x%lx,0x%lx]\n",
+ bus->self->dev.bus_id, i,
+ bus->self->resource[i].start,
+ bus->self->resource[i].end);
+ }
+ }
+
+
+ list_for_each(ln, &bus->devices) {
+ int i;
+
+ dev = pci_dev_b(ln);
+ if (is_card_dino(&dino_dev->hba.dev->id))
+ dino_card_fixup(dev);
+
+ /*
+ ** P2PB's only have 2 BARs, no IRQs.
+ ** I'd like to just ignore them for now.
+ */
+ if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI)
+ continue;
+
+ /* Adjust the I/O Port space addresses */
+ for (i = 0; i < PCI_NUM_RESOURCES; i++) {
+ struct resource *res = &dev->resource[i];
+ if (res->flags & IORESOURCE_IO) {
+ res->start |= port_base;
+ res->end |= port_base;
+ }
+#ifdef __LP64__
+ /* Sign Extend MMIO addresses */
+ else if (res->flags & IORESOURCE_MEM) {
+ res->start |= F_EXTEND(0UL);
+ res->end |= F_EXTEND(0UL);
+ }
+#endif
+ }
+ /* null out the ROM resource if there is one (we don't
+ * care about an expansion rom on parisc, since it
+ * usually contains (x86) bios code) */
+ dev->resource[PCI_ROM_RESOURCE].flags = 0;
+
+ if(dev->irq == 255) {
+
+#define DINO_FIX_UNASSIGNED_INTERRUPTS
+#ifdef DINO_FIX_UNASSIGNED_INTERRUPTS
+
+ /* This code tries to assign an unassigned
+ * interrupt. Leave it disabled unless you
+ * *really* know what you're doing since the
+ * pin<->interrupt line mapping varies by bus
+ * and machine */
+
+ u32 irq_pin;
+
+ dino_cfg_read(dev->bus, dev->devfn,
+ PCI_INTERRUPT_PIN, 1, &irq_pin);
+ irq_pin = (irq_pin + PCI_SLOT(dev->devfn) - 1) % 4 ;
+ printk(KERN_WARNING "Device %s has undefined IRQ, "
+ "setting to %d\n", pci_name(dev), irq_pin);
+ dino_cfg_write(dev->bus, dev->devfn,
+ PCI_INTERRUPT_LINE, 1, irq_pin);
+ dino_assign_irq(dino_dev, irq_pin, &dev->irq);
+#else
+ dev->irq = 65535;
+ printk(KERN_WARNING "Device %s has unassigned IRQ\n", pci_name(dev));
+#endif
+ } else {
+
+ /* Adjust INT_LINE for that busses region */
+ dino_assign_irq(dino_dev, dev->irq, &dev->irq);
+ }
+ }
+}
+
+
+struct pci_bios_ops dino_bios_ops = {
+ .init = dino_bios_init,
+ .fixup_bus = dino_fixup_bus
+};
+
+
+/*
+ * Initialise a DINO controller chip
+ */
+static void __init
+dino_card_init(struct dino_device *dino_dev)
+{
+ u32 brdg_feat = 0x00784e05;
+
+ __raw_writel(0x00000000, dino_dev->hba.base_addr+DINO_GMASK);
+ __raw_writel(0x00000001, dino_dev->hba.base_addr+DINO_IO_FBB_EN);
+ __raw_writel(0x00000000, dino_dev->hba.base_addr+DINO_ICR);
+
+#if 1
+/* REVISIT - should be a runtime check (eg if (CPU_IS_PCX_L) ...) */
+ /*
+ ** PCX-L processors don't support XQL like Dino wants it.
+ ** PCX-L2 ignore XQL signal and it doesn't matter.
+ */
+ brdg_feat &= ~0x4; /* UXQL */
+#endif
+ __raw_writel( brdg_feat, dino_dev->hba.base_addr+DINO_BRDG_FEAT);
+
+ /*
+ ** Don't enable address decoding until we know which I/O range
+ ** currently is available from the host. Only affects MMIO
+ ** and not I/O port space.
+ */
+ __raw_writel(0x00000000, dino_dev->hba.base_addr+DINO_IO_ADDR_EN);
+
+ __raw_writel(0x00000000, dino_dev->hba.base_addr+DINO_DAMODE);
+ __raw_writel(0x00222222, dino_dev->hba.base_addr+DINO_PCIROR);
+ __raw_writel(0x00222222, dino_dev->hba.base_addr+DINO_PCIWOR);
+
+ __raw_writel(0x00000040, dino_dev->hba.base_addr+DINO_MLTIM);
+ __raw_writel(0x00000080, dino_dev->hba.base_addr+DINO_IO_CONTROL);
+ __raw_writel(0x0000008c, dino_dev->hba.base_addr+DINO_TLTIM);
+
+ /* Disable PAMR before writing PAPR */
+ __raw_writel(0x0000007e, dino_dev->hba.base_addr+DINO_PAMR);
+ __raw_writel(0x0000007f, dino_dev->hba.base_addr+DINO_PAPR);
+ __raw_writel(0x00000000, dino_dev->hba.base_addr+DINO_PAMR);
+
+ /*
+ ** Dino ERS encourages enabling FBB (0x6f).
+ ** We can't until we know *all* devices below us can support it.
+ ** (Something in device configuration header tells us).
+ */
+ __raw_writel(0x0000004f, dino_dev->hba.base_addr+DINO_PCICMD);
+
+ /* Somewhere, the PCI spec says give devices 1 second
+ ** to recover from the #RESET being de-asserted.
+ ** Experience shows most devices only need 10ms.
+ ** This short-cut speeds up booting significantly.
+ */
+ mdelay(pci_post_reset_delay);
+}
+
+static int __init
+dino_bridge_init(struct dino_device *dino_dev, const char *name)
+{
+ unsigned long io_addr;
+ int result, i, count=0;
+ struct resource *res, *prevres = NULL;
+ /*
+ * Decoding IO_ADDR_EN only works for Built-in Dino
+ * since PDC has already initialized this.
+ */
+
+ io_addr = __raw_readl(dino_dev->hba.base_addr + DINO_IO_ADDR_EN);
+ if (io_addr == 0) {
+ printk(KERN_WARNING "%s: No PCI devices enabled.\n", name);
+ return -ENODEV;
+ }
+
+ res = &dino_dev->hba.lmmio_space;
+ for (i = 0; i < 32; i++) {
+ unsigned long start, end;
+
+ if((io_addr & (1 << i)) == 0)
+ continue;
+
+ start = (unsigned long)(signed int)(0xf0000000 | (i << 23));
+ end = start + 8 * 1024 * 1024 - 1;
+
+ DBG("DINO RANGE %d is at 0x%lx-0x%lx\n", count,
+ start, end);
+
+ if(prevres && prevres->end + 1 == start) {
+ prevres->end = end;
+ } else {
+ if(count >= DINO_MAX_LMMIO_RESOURCES) {
+ printk(KERN_ERR "%s is out of resource windows for range %d (0x%lx-0x%lx)\n", name, count, start, end);
+ break;
+ }
+ prevres = res;
+ res->start = start;
+ res->end = end;
+ res->flags = IORESOURCE_MEM;
+ res->name = kmalloc(64, GFP_KERNEL);
+ if(res->name)
+ snprintf((char *)res->name, 64, "%s LMMIO %d",
+ name, count);
+ res++;
+ count++;
+ }
+ }
+
+ res = &dino_dev->hba.lmmio_space;
+
+ for(i = 0; i < DINO_MAX_LMMIO_RESOURCES; i++) {
+ if(res[i].flags == 0)
+ break;
+
+ result = ccio_request_resource(dino_dev->hba.dev, &res[i]);
+ if (result < 0) {
+ printk(KERN_ERR "%s: failed to claim PCI Bus address space %d (0x%lx-0x%lx)!\n", name, i, res[i].start, res[i].end);
+ return result;
+ }
+ }
+ return 0;
+}
+
+static int __init dino_common_init(struct parisc_device *dev,
+ struct dino_device *dino_dev, const char *name)
+{
+ int status;
+ u32 eim;
+ struct gsc_irq gsc_irq;
+ struct resource *res;
+
+ pcibios_register_hba(&dino_dev->hba);
+
+ pci_bios = &dino_bios_ops; /* used by pci_scan_bus() */
+ pci_port = &dino_port_ops;
+
+ /*
+ ** Note: SMP systems can make use of IRR1/IAR1 registers
+ ** But it won't buy much performance except in very
+ ** specific applications/configurations. Note Dino
+ ** still only has 11 IRQ input lines - just map some of them
+ ** to a different processor.
+ */
+ dev->irq = gsc_alloc_irq(&gsc_irq);
+ dino_dev->txn_addr = gsc_irq.txn_addr;
+ dino_dev->txn_data = gsc_irq.txn_data;
+ eim = ((u32) gsc_irq.txn_addr) | gsc_irq.txn_data;
+
+ /*
+ ** Dino needs a PA "IRQ" to get a processor's attention.
+ ** arch/parisc/kernel/irq.c returns an EIRR bit.
+ */
+ if (dev->irq < 0) {
+ printk(KERN_WARNING "%s: gsc_alloc_irq() failed\n", name);
+ return 1;
+ }
+
+ status = request_irq(dev->irq, dino_isr, 0, name, dino_dev);
+ if (status) {
+ printk(KERN_WARNING "%s: request_irq() failed with %d\n",
+ name, status);
+ return 1;
+ }
+
+ /* Support the serial port which is sometimes attached on built-in
+ * Dino / Cujo chips.
+ */
+
+ gsc_fixup_irqs(dev, dino_dev, dino_choose_irq);
+
+ /*
+ ** This enables DINO to generate interrupts when it sees
+ ** any of its inputs *change*. Just asserting an IRQ
+ ** before it's enabled (ie unmasked) isn't good enough.
+ */
+ __raw_writel(eim, dino_dev->hba.base_addr+DINO_IAR0);
+
+ /*
+ ** Some platforms don't clear Dino's IRR0 register at boot time.
+ ** Reading will clear it now.
+ */
+ __raw_readl(dino_dev->hba.base_addr+DINO_IRR0);
+
+ /* allocate I/O Port resource region */
+ res = &dino_dev->hba.io_space;
+ if (dev->id.hversion == 0x680 || is_card_dino(&dev->id)) {
+ res->name = "Dino I/O Port";
+ } else {
+ res->name = "Cujo I/O Port";
+ }
+ res->start = HBA_PORT_BASE(dino_dev->hba.hba_num);
+ res->end = res->start + (HBA_PORT_SPACE_SIZE - 1);
+ res->flags = IORESOURCE_IO; /* do not mark it busy ! */
+ if (request_resource(&ioport_resource, res) < 0) {
+ printk(KERN_ERR "%s: request I/O Port region failed "
+ "0x%lx/%lx (hpa 0x%p)\n",
+ name, res->start, res->end, dino_dev->hba.base_addr);
+ return 1;
+ }
+
+ return 0;
+}
+
+#define CUJO_RAVEN_ADDR F_EXTEND(0xf1000000UL)
+#define CUJO_FIREHAWK_ADDR F_EXTEND(0xf1604000UL)
+#define CUJO_RAVEN_BADPAGE 0x01003000UL
+#define CUJO_FIREHAWK_BADPAGE 0x01607000UL
+
+static const char *dino_vers[] = {
+ "2.0",
+ "2.1",
+ "3.0",
+ "3.1"
+};
+
+static const char *cujo_vers[] = {
+ "1.0",
+ "2.0"
+};
+
+void ccio_cujo20_fixup(struct parisc_device *dev, u32 iovp);
+
+/*
+** Determine if dino should claim this chip (return 0) or not (return 1).
+** If so, initialize the chip appropriately (card-mode vs bridge mode).
+** Much of the initialization is common though.
+*/
+static int __init
+dino_driver_callback(struct parisc_device *dev)
+{
+ struct dino_device *dino_dev; // Dino specific control struct
+ const char *version = "unknown";
+ char *name;
+ int is_cujo = 0;
+ struct pci_bus *bus;
+
+ name = "Dino";
+ if (is_card_dino(&dev->id)) {
+ version = "3.x (card mode)";
+ } else {
+ if(dev->id.hversion == 0x680) {
+ if (dev->id.hversion_rev < 4) {
+ version = dino_vers[dev->id.hversion_rev];
+ }
+ } else {
+ name = "Cujo";
+ is_cujo = 1;
+ if (dev->id.hversion_rev < 2) {
+ version = cujo_vers[dev->id.hversion_rev];
+ }
+ }
+ }
+
+ printk("%s version %s found at 0x%lx\n", name, version, dev->hpa);
+
+ if (!request_mem_region(dev->hpa, PAGE_SIZE, name)) {
+ printk(KERN_ERR "DINO: Hey! Someone took my MMIO space (0x%ld)!\n",
+ dev->hpa);
+ return 1;
+ }
+
+ /* Check for bugs */
+ if (is_cujo && dev->id.hversion_rev == 1) {
+#ifdef CONFIG_IOMMU_CCIO
+ printk(KERN_WARNING "Enabling Cujo 2.0 bug workaround\n");
+ if (dev->hpa == (unsigned long)CUJO_RAVEN_ADDR) {
+ ccio_cujo20_fixup(dev, CUJO_RAVEN_BADPAGE);
+ } else if (dev->hpa == (unsigned long)CUJO_FIREHAWK_ADDR) {
+ ccio_cujo20_fixup(dev, CUJO_FIREHAWK_BADPAGE);
+ } else {
+ printk("Don't recognise Cujo at address 0x%lx, not enabling workaround\n", dev->hpa);
+ }
+#endif
+ } else if (!is_cujo && !is_card_dino(&dev->id) &&
+ dev->id.hversion_rev < 3) {
+ printk(KERN_WARNING
+"The GSCtoPCI (Dino hrev %d) bus converter found may exhibit\n"
+"data corruption. See Service Note Numbers: A4190A-01, A4191A-01.\n"
+"Systems shipped after Aug 20, 1997 will not exhibit this problem.\n"
+"Models affected: C180, C160, C160L, B160L, and B132L workstations.\n\n",
+ dev->id.hversion_rev);
+/* REVISIT: why are C200/C240 listed in the README table but not
+** "Models affected"? Could be an omission in the original literature.
+*/
+ }
+
+ dino_dev = kmalloc(sizeof(struct dino_device), GFP_KERNEL);
+ if (!dino_dev) {
+ printk("dino_init_chip - couldn't alloc dino_device\n");
+ return 1;
+ }
+
+ memset(dino_dev, 0, sizeof(struct dino_device));
+
+ dino_dev->hba.dev = dev;
+ dino_dev->hba.base_addr = ioremap(dev->hpa, 4096); /* faster access */
+ dino_dev->hba.lmmio_space_offset = 0; /* CPU addrs == bus addrs */
+ spin_lock_init(&dino_dev->dinosaur_pen);
+ dino_dev->hba.iommu = ccio_get_iommu(dev);
+
+ if (is_card_dino(&dev->id)) {
+ dino_card_init(dino_dev);
+ } else {
+ dino_bridge_init(dino_dev, name);
+ }
+
+ if (dino_common_init(dev, dino_dev, name))
+ return 1;
+
+ dev->dev.platform_data = dino_dev;
+
+ /*
+ ** It's not used to avoid chicken/egg problems
+ ** with configuration accessor functions.
+ */
+ bus = pci_scan_bus_parented(&dev->dev, dino_current_bus,
+ &dino_cfg_ops, NULL);
+ if(bus) {
+ /* This code *depends* on scanning being single threaded
+ * if it isn't, this global bus number count will fail
+ */
+ dino_current_bus = bus->subordinate + 1;
+ pci_bus_assign_resources(bus);
+ } else {
+ printk(KERN_ERR "ERROR: failed to scan PCI bus on %s (probably duplicate bus number %d)\n", dev->dev.bus_id, dino_current_bus);
+ /* increment the bus number in case of duplicates */
+ dino_current_bus++;
+ }
+ dino_dev->hba.hba_bus = bus;
+ return 0;
+}
+
+/*
+ * Normally, we would just test sversion. But the Elroy PCI adapter has
+ * the same sversion as Dino, so we have to check hversion as well.
+ * Unfortunately, the J2240 PDC reports the wrong hversion for the first
+ * Dino, so we have to test for Dino, Cujo and Dino-in-a-J2240.
+ * For card-mode Dino, most machines report an sversion of 9D. But 715
+ * and 725 firmware misreport it as 0x08080 for no adequately explained
+ * reason.
+ */
+static struct parisc_device_id dino_tbl[] = {
+ { HPHW_A_DMA, HVERSION_REV_ANY_ID, 0x004, 0x0009D },/* Card-mode Dino */
+ { HPHW_A_DMA, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x08080 }, /* XXX */
+ { HPHW_BRIDGE, HVERSION_REV_ANY_ID, 0x680, 0xa }, /* Bridge-mode Dino */
+ { HPHW_BRIDGE, HVERSION_REV_ANY_ID, 0x682, 0xa }, /* Bridge-mode Cujo */
+ { HPHW_BRIDGE, HVERSION_REV_ANY_ID, 0x05d, 0xa }, /* Dino in a J2240 */
+ { 0, }
+};
+
+static struct parisc_driver dino_driver = {
+ .name = "Dino",
+ .id_table = dino_tbl,
+ .probe = dino_driver_callback,
+};
+
+/*
+ * One time initialization to let the world know Dino is here.
+ * This is the only routine which is NOT static.
+ * Must be called exactly once before pci_init().
+ */
+int __init dino_init(void)
+{
+ register_parisc_driver(&dino_driver);
+ return 0;
+}
+
diff --git a/drivers/parisc/eisa.c b/drivers/parisc/eisa.c
new file mode 100644
index 000000000000..043d47aea75b
--- /dev/null
+++ b/drivers/parisc/eisa.c
@@ -0,0 +1,464 @@
+/*
+ * eisa.c - provide support for EISA adapters in PA-RISC machines
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * Copyright (c) 2001 Matthew Wilcox for Hewlett Packard
+ * Copyright (c) 2001 Daniel Engstrom <5116@telia.com>
+ *
+ * There are two distinct EISA adapters. Mongoose is found in machines
+ * before the 712; then the Wax ASIC is used. To complicate matters, the
+ * Wax ASIC also includes a PS/2 and RS-232 controller, but those are
+ * dealt with elsewhere; this file is concerned only with the EISA portions
+ * of Wax.
+ *
+ *
+ * HINT:
+ * -----
+ * To allow an ISA card to work properly in the EISA slot you need to
+ * set an edge trigger level. This may be done on the palo command line
+ * by adding the kernel parameter "eisa_irq_edge=n,n2,[...]]", with
+ * n and n2 as the irq levels you want to use.
+ *
+ * Example: "eisa_irq_edge=10,11" allows ISA cards to operate at
+ * irq levels 10 and 11.
+ */
+
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/sched.h>
+#include <linux/spinlock.h>
+#include <linux/eisa.h>
+
+#include <asm/byteorder.h>
+#include <asm/io.h>
+#include <asm/hardware.h>
+#include <asm/processor.h>
+#include <asm/parisc-device.h>
+#include <asm/delay.h>
+#include <asm/eisa_bus.h>
+#include <asm/eisa_eeprom.h>
+
+#if 0
+#define EISA_DBG(msg, arg... ) printk(KERN_DEBUG "eisa: " msg , ## arg )
+#else
+#define EISA_DBG(msg, arg... )
+#endif
+
+#define SNAKES_EEPROM_BASE_ADDR 0xF0810400
+#define MIRAGE_EEPROM_BASE_ADDR 0xF00C0400
+
+static DEFINE_SPINLOCK(eisa_irq_lock);
+
+void __iomem *eisa_eeprom_addr;
+
+/* We can only have one EISA adapter in the system because neither
+ * implementation can be flexed.
+ */
+static struct eisa_ba {
+ struct pci_hba_data hba;
+ unsigned long eeprom_addr;
+ struct eisa_root_device root;
+} eisa_dev;
+
+/* Port ops */
+
+static inline unsigned long eisa_permute(unsigned short port)
+{
+ if (port & 0x300) {
+ return 0xfc000000 | ((port & 0xfc00) >> 6)
+ | ((port & 0x3f8) << 9) | (port & 7);
+ } else {
+ return 0xfc000000 | port;
+ }
+}
+
+unsigned char eisa_in8(unsigned short port)
+{
+ if (EISA_bus)
+ return gsc_readb(eisa_permute(port));
+ return 0xff;
+}
+
+unsigned short eisa_in16(unsigned short port)
+{
+ if (EISA_bus)
+ return le16_to_cpu(gsc_readw(eisa_permute(port)));
+ return 0xffff;
+}
+
+unsigned int eisa_in32(unsigned short port)
+{
+ if (EISA_bus)
+ return le32_to_cpu(gsc_readl(eisa_permute(port)));
+ return 0xffffffff;
+}
+
+void eisa_out8(unsigned char data, unsigned short port)
+{
+ if (EISA_bus)
+ gsc_writeb(data, eisa_permute(port));
+}
+
+void eisa_out16(unsigned short data, unsigned short port)
+{
+ if (EISA_bus)
+ gsc_writew(cpu_to_le16(data), eisa_permute(port));
+}
+
+void eisa_out32(unsigned int data, unsigned short port)
+{
+ if (EISA_bus)
+ gsc_writel(cpu_to_le32(data), eisa_permute(port));
+}
+
+#ifndef CONFIG_PCI
+/* We call these directly without PCI. See asm/io.h. */
+EXPORT_SYMBOL(eisa_in8);
+EXPORT_SYMBOL(eisa_in16);
+EXPORT_SYMBOL(eisa_in32);
+EXPORT_SYMBOL(eisa_out8);
+EXPORT_SYMBOL(eisa_out16);
+EXPORT_SYMBOL(eisa_out32);
+#endif
+
+/* Interrupt handling */
+
+/* cached interrupt mask registers */
+static int master_mask;
+static int slave_mask;
+
+/* the trig level can be set with the
+ * eisa_irq_edge=n,n,n commandline parameter
+ * We should really read this from the EEPROM
+ * in the furure.
+ */
+/* irq 13,8,2,1,0 must be edge */
+static unsigned int eisa_irq_level; /* default to edge triggered */
+
+
+/* called by free irq */
+static void eisa_disable_irq(unsigned int irq)
+{
+ unsigned long flags;
+
+ EISA_DBG("disable irq %d\n", irq);
+ /* just mask for now */
+ spin_lock_irqsave(&eisa_irq_lock, flags);
+ if (irq & 8) {
+ slave_mask |= (1 << (irq&7));
+ eisa_out8(slave_mask, 0xa1);
+ } else {
+ master_mask |= (1 << (irq&7));
+ eisa_out8(master_mask, 0x21);
+ }
+ spin_unlock_irqrestore(&eisa_irq_lock, flags);
+ EISA_DBG("pic0 mask %02x\n", eisa_in8(0x21));
+ EISA_DBG("pic1 mask %02x\n", eisa_in8(0xa1));
+}
+
+/* called by request irq */
+static void eisa_enable_irq(unsigned int irq)
+{
+ unsigned long flags;
+ EISA_DBG("enable irq %d\n", irq);
+
+ spin_lock_irqsave(&eisa_irq_lock, flags);
+ if (irq & 8) {
+ slave_mask &= ~(1 << (irq&7));
+ eisa_out8(slave_mask, 0xa1);
+ } else {
+ master_mask &= ~(1 << (irq&7));
+ eisa_out8(master_mask, 0x21);
+ }
+ spin_unlock_irqrestore(&eisa_irq_lock, flags);
+ EISA_DBG("pic0 mask %02x\n", eisa_in8(0x21));
+ EISA_DBG("pic1 mask %02x\n", eisa_in8(0xa1));
+}
+
+static unsigned int eisa_startup_irq(unsigned int irq)
+{
+ eisa_enable_irq(irq);
+ return 0;
+}
+
+static struct hw_interrupt_type eisa_interrupt_type = {
+ .typename = "EISA",
+ .startup = eisa_startup_irq,
+ .shutdown = eisa_disable_irq,
+ .enable = eisa_enable_irq,
+ .disable = eisa_disable_irq,
+ .ack = no_ack_irq,
+ .end = no_end_irq,
+};
+
+static irqreturn_t eisa_irq(int wax_irq, void *intr_dev, struct pt_regs *regs)
+{
+ int irq = gsc_readb(0xfc01f000); /* EISA supports 16 irqs */
+ unsigned long flags;
+
+ spin_lock_irqsave(&eisa_irq_lock, flags);
+ /* read IRR command */
+ eisa_out8(0x0a, 0x20);
+ eisa_out8(0x0a, 0xa0);
+
+ EISA_DBG("irq IAR %02x 8259-1 irr %02x 8259-2 irr %02x\n",
+ irq, eisa_in8(0x20), eisa_in8(0xa0));
+
+ /* read ISR command */
+ eisa_out8(0x0a, 0x20);
+ eisa_out8(0x0a, 0xa0);
+ EISA_DBG("irq 8259-1 isr %02x imr %02x 8259-2 isr %02x imr %02x\n",
+ eisa_in8(0x20), eisa_in8(0x21), eisa_in8(0xa0), eisa_in8(0xa1));
+
+ irq &= 0xf;
+
+ /* mask irq and write eoi */
+ if (irq & 8) {
+ slave_mask |= (1 << (irq&7));
+ eisa_out8(slave_mask, 0xa1);
+ eisa_out8(0x60 | (irq&7),0xa0);/* 'Specific EOI' to slave */
+ eisa_out8(0x62,0x20); /* 'Specific EOI' to master-IRQ2 */
+
+ } else {
+ master_mask |= (1 << (irq&7));
+ eisa_out8(master_mask, 0x21);
+ eisa_out8(0x60|irq,0x20); /* 'Specific EOI' to master */
+ }
+ spin_unlock_irqrestore(&eisa_irq_lock, flags);
+
+ __do_IRQ(irq, regs);
+
+ spin_lock_irqsave(&eisa_irq_lock, flags);
+ /* unmask */
+ if (irq & 8) {
+ slave_mask &= ~(1 << (irq&7));
+ eisa_out8(slave_mask, 0xa1);
+ } else {
+ master_mask &= ~(1 << (irq&7));
+ eisa_out8(master_mask, 0x21);
+ }
+ spin_unlock_irqrestore(&eisa_irq_lock, flags);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t dummy_irq2_handler(int _, void *dev, struct pt_regs *regs)
+{
+ printk(KERN_ALERT "eisa: uhh, irq2?\n");
+ return IRQ_HANDLED;
+}
+
+static struct irqaction irq2_action = {
+ .handler = dummy_irq2_handler,
+ .name = "cascade",
+};
+
+static void init_eisa_pic(void)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&eisa_irq_lock, flags);
+
+ eisa_out8(0xff, 0x21); /* mask during init */
+ eisa_out8(0xff, 0xa1); /* mask during init */
+
+ /* master pic */
+ eisa_out8(0x11,0x20); /* ICW1 */
+ eisa_out8(0x00,0x21); /* ICW2 */
+ eisa_out8(0x04,0x21); /* ICW3 */
+ eisa_out8(0x01,0x21); /* ICW4 */
+ eisa_out8(0x40,0x20); /* OCW2 */
+
+ /* slave pic */
+ eisa_out8(0x11,0xa0); /* ICW1 */
+ eisa_out8(0x08,0xa1); /* ICW2 */
+ eisa_out8(0x02,0xa1); /* ICW3 */
+ eisa_out8(0x01,0xa1); /* ICW4 */
+ eisa_out8(0x40,0xa0); /* OCW2 */
+
+ udelay(100);
+
+ slave_mask = 0xff;
+ master_mask = 0xfb;
+ eisa_out8(slave_mask, 0xa1); /* OCW1 */
+ eisa_out8(master_mask, 0x21); /* OCW1 */
+
+ /* setup trig level */
+ EISA_DBG("EISA edge/level %04x\n", eisa_irq_level);
+
+ eisa_out8(eisa_irq_level&0xff, 0x4d0); /* Set all irq's to edge */
+ eisa_out8((eisa_irq_level >> 8) & 0xff, 0x4d1);
+
+ EISA_DBG("pic0 mask %02x\n", eisa_in8(0x21));
+ EISA_DBG("pic1 mask %02x\n", eisa_in8(0xa1));
+ EISA_DBG("pic0 edge/level %02x\n", eisa_in8(0x4d0));
+ EISA_DBG("pic1 edge/level %02x\n", eisa_in8(0x4d1));
+
+ spin_unlock_irqrestore(&eisa_irq_lock, flags);
+}
+
+/* Device initialisation */
+
+#define is_mongoose(dev) (dev->id.sversion == 0x00076)
+
+static int __devinit eisa_probe(struct parisc_device *dev)
+{
+ int i, result;
+
+ char *name = is_mongoose(dev) ? "Mongoose" : "Wax";
+
+ printk(KERN_INFO "%s EISA Adapter found at 0x%08lx\n",
+ name, dev->hpa);
+
+ eisa_dev.hba.dev = dev;
+ eisa_dev.hba.iommu = ccio_get_iommu(dev);
+
+ eisa_dev.hba.lmmio_space.name = "EISA";
+ eisa_dev.hba.lmmio_space.start = F_EXTEND(0xfc000000);
+ eisa_dev.hba.lmmio_space.end = F_EXTEND(0xffbfffff);
+ eisa_dev.hba.lmmio_space.flags = IORESOURCE_MEM;
+ result = ccio_request_resource(dev, &eisa_dev.hba.lmmio_space);
+ if (result < 0) {
+ printk(KERN_ERR "EISA: failed to claim EISA Bus address space!\n");
+ return result;
+ }
+ eisa_dev.hba.io_space.name = "EISA";
+ eisa_dev.hba.io_space.start = 0;
+ eisa_dev.hba.io_space.end = 0xffff;
+ eisa_dev.hba.lmmio_space.flags = IORESOURCE_IO;
+ result = request_resource(&ioport_resource, &eisa_dev.hba.io_space);
+ if (result < 0) {
+ printk(KERN_ERR "EISA: failed to claim EISA Bus port space!\n");
+ return result;
+ }
+ pcibios_register_hba(&eisa_dev.hba);
+
+ result = request_irq(dev->irq, eisa_irq, SA_SHIRQ, "EISA", &eisa_dev);
+ if (result) {
+ printk(KERN_ERR "EISA: request_irq failed!\n");
+ return result;
+ }
+
+ /* Reserve IRQ2 */
+ irq_desc[2].action = &irq2_action;
+
+ for (i = 0; i < 16; i++) {
+ irq_desc[i].handler = &eisa_interrupt_type;
+ }
+
+ EISA_bus = 1;
+
+ if (dev->num_addrs) {
+ /* newer firmware hand out the eeprom address */
+ eisa_dev.eeprom_addr = dev->addr[0];
+ } else {
+ /* old firmware, need to figure out the box */
+ if (is_mongoose(dev)) {
+ eisa_dev.eeprom_addr = SNAKES_EEPROM_BASE_ADDR;
+ } else {
+ eisa_dev.eeprom_addr = MIRAGE_EEPROM_BASE_ADDR;
+ }
+ }
+ eisa_eeprom_addr = ioremap(eisa_dev.eeprom_addr, HPEE_MAX_LENGTH);
+ result = eisa_enumerator(eisa_dev.eeprom_addr, &eisa_dev.hba.io_space,
+ &eisa_dev.hba.lmmio_space);
+ init_eisa_pic();
+
+ if (result >= 0) {
+ /* FIXME : Don't enumerate the bus twice. */
+ eisa_dev.root.dev = &dev->dev;
+ dev->dev.driver_data = &eisa_dev.root;
+ eisa_dev.root.bus_base_addr = 0;
+ eisa_dev.root.res = &eisa_dev.hba.io_space;
+ eisa_dev.root.slots = result;
+ eisa_dev.root.dma_mask = 0xffffffff; /* wild guess */
+ if (eisa_root_register (&eisa_dev.root)) {
+ printk(KERN_ERR "EISA: Failed to register EISA root\n");
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+static struct parisc_device_id eisa_tbl[] = {
+ { HPHW_BA, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00076 }, /* Mongoose */
+ { HPHW_BA, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00090 }, /* Wax EISA */
+ { 0, }
+};
+
+MODULE_DEVICE_TABLE(parisc, eisa_tbl);
+
+static struct parisc_driver eisa_driver = {
+ .name = "EISA Bus Adapter",
+ .id_table = eisa_tbl,
+ .probe = eisa_probe,
+};
+
+void __init eisa_init(void)
+{
+ register_parisc_driver(&eisa_driver);
+}
+
+
+static unsigned int eisa_irq_configured;
+void eisa_make_irq_level(int num)
+{
+ if (eisa_irq_configured& (1<<num)) {
+ printk(KERN_WARNING
+ "IRQ %d polarity configured twice (last to level)\n",
+ num);
+ }
+ eisa_irq_level |= (1<<num); /* set the corresponding bit */
+ eisa_irq_configured |= (1<<num); /* set the corresponding bit */
+}
+
+void eisa_make_irq_edge(int num)
+{
+ if (eisa_irq_configured& (1<<num)) {
+ printk(KERN_WARNING
+ "IRQ %d polarity configured twice (last to edge)\n",
+ num);
+ }
+ eisa_irq_level &= ~(1<<num); /* clear the corresponding bit */
+ eisa_irq_configured |= (1<<num); /* set the corresponding bit */
+}
+
+static int __init eisa_irq_setup(char *str)
+{
+ char *cur = str;
+ int val;
+
+ EISA_DBG("IRQ setup\n");
+ while (cur != NULL) {
+ char *pe;
+
+ val = (int) simple_strtoul(cur, &pe, 0);
+ if (val > 15 || val < 0) {
+ printk(KERN_ERR "eisa: EISA irq value are 0-15\n");
+ continue;
+ }
+ if (val == 2) {
+ val = 9;
+ }
+ eisa_make_irq_edge(val); /* clear the corresponding bit */
+ EISA_DBG("setting IRQ %d to edge-triggered mode\n", val);
+
+ if ((cur = strchr(cur, ','))) {
+ cur++;
+ } else {
+ break;
+ }
+ }
+ return 1;
+}
+
+__setup("eisa_irq_edge=", eisa_irq_setup);
+
diff --git a/drivers/parisc/eisa_eeprom.c b/drivers/parisc/eisa_eeprom.c
new file mode 100644
index 000000000000..3a1b4826e5c1
--- /dev/null
+++ b/drivers/parisc/eisa_eeprom.c
@@ -0,0 +1,134 @@
+/*
+ * EISA "eeprom" support routines
+ *
+ * Copyright (C) 2001 Thomas Bogendoerfer <tsbogend at parisc-linux.org>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/miscdevice.h>
+#include <linux/slab.h>
+#include <linux/fs.h>
+#include <asm/io.h>
+#include <asm/uaccess.h>
+#include <asm/eisa_eeprom.h>
+
+#define EISA_EEPROM_MINOR 241
+
+static loff_t eisa_eeprom_llseek(struct file *file, loff_t offset, int origin )
+{
+ switch (origin) {
+ case 0:
+ /* nothing to do */
+ break;
+ case 1:
+ offset += file->f_pos;
+ break;
+ case 2:
+ offset += HPEE_MAX_LENGTH;
+ break;
+ }
+ return (offset >= 0 && offset < HPEE_MAX_LENGTH) ? (file->f_pos = offset) : -EINVAL;
+}
+
+static ssize_t eisa_eeprom_read(struct file * file,
+ char *buf, size_t count, loff_t *ppos )
+{
+ unsigned char *tmp;
+ ssize_t ret;
+ int i;
+
+ if (*ppos >= HPEE_MAX_LENGTH)
+ return 0;
+
+ count = *ppos + count < HPEE_MAX_LENGTH ? count : HPEE_MAX_LENGTH - *ppos;
+ tmp = kmalloc(count, GFP_KERNEL);
+ if (tmp) {
+ for (i = 0; i < count; i++)
+ tmp[i] = readb(eisa_eeprom_addr+(*ppos)++);
+
+ if (copy_to_user (buf, tmp, count))
+ ret = -EFAULT;
+ else
+ ret = count;
+ kfree (tmp);
+ } else
+ ret = -ENOMEM;
+
+ return ret;
+}
+
+static int eisa_eeprom_ioctl(struct inode *inode, struct file *file,
+ unsigned int cmd,
+ unsigned long arg)
+{
+ return -ENOTTY;
+}
+
+static int eisa_eeprom_open(struct inode *inode, struct file *file)
+{
+ if (file->f_mode & 2)
+ return -EINVAL;
+
+ return 0;
+}
+
+static int eisa_eeprom_release(struct inode *inode, struct file *file)
+{
+ return 0;
+}
+
+/*
+ * The various file operations we support.
+ */
+static struct file_operations eisa_eeprom_fops = {
+ .owner = THIS_MODULE,
+ .llseek = eisa_eeprom_llseek,
+ .read = eisa_eeprom_read,
+ .ioctl = eisa_eeprom_ioctl,
+ .open = eisa_eeprom_open,
+ .release = eisa_eeprom_release,
+};
+
+static struct miscdevice eisa_eeprom_dev = {
+ EISA_EEPROM_MINOR,
+ "eisa_eeprom",
+ &eisa_eeprom_fops
+};
+
+static int __init eisa_eeprom_init(void)
+{
+ int retval;
+
+ if (!eisa_eeprom_addr)
+ return -ENODEV;
+
+ retval = misc_register(&eisa_eeprom_dev);
+ if (retval < 0) {
+ printk(KERN_ERR "EISA EEPROM: cannot register misc device.\n");
+ return retval;
+ }
+
+ printk(KERN_INFO "EISA EEPROM at 0x%p\n", eisa_eeprom_addr);
+ return 0;
+}
+
+MODULE_LICENSE("GPL");
+
+module_init(eisa_eeprom_init);
diff --git a/drivers/parisc/eisa_enumerator.c b/drivers/parisc/eisa_enumerator.c
new file mode 100644
index 000000000000..6d8aae003f6c
--- /dev/null
+++ b/drivers/parisc/eisa_enumerator.c
@@ -0,0 +1,521 @@
+/*
+ * eisa_enumerator.c - provide support for EISA adapters in PA-RISC machines
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * Copyright (c) 2002 Daniel Engstrom <5116@telia.com>
+ *
+ */
+
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <asm/io.h>
+#include <asm/uaccess.h>
+#include <asm/byteorder.h>
+
+#include <asm/eisa_bus.h>
+#include <asm/eisa_eeprom.h>
+
+
+/*
+ * Todo:
+ *
+ * PORT init with MASK attr and other size than byte
+ * MEMORY with other decode than 20 bit
+ * CRC stuff
+ * FREEFORM stuff
+ */
+
+#define EPI 0xc80
+#define NUM_SLOT 16
+#define SLOT2PORT(x) (x<<12)
+
+
+/* macros to handle unaligned accesses and
+ * byte swapping. The data in the EEPROM is
+ * little-endian on the big-endian PAROSC */
+#define get_8(x) (*(u_int8_t*)(x))
+
+static inline u_int16_t get_16(const unsigned char *x)
+{
+ return (x[1] << 8) | x[0];
+}
+
+static inline u_int32_t get_32(const unsigned char *x)
+{
+ return (x[3] << 24) | (x[2] << 16) | (x[1] << 8) | x[0];
+}
+
+static inline u_int32_t get_24(const unsigned char *x)
+{
+ return (x[2] << 24) | (x[1] << 16) | (x[0] << 8);
+}
+
+static void print_eisa_id(char *s, u_int32_t id)
+{
+ char vendor[4];
+ int rev;
+ int device;
+
+ rev = id & 0xff;
+ id >>= 8;
+ device = id & 0xff;
+ id >>= 8;
+ vendor[3] = '\0';
+ vendor[2] = '@' + (id & 0x1f);
+ id >>= 5;
+ vendor[1] = '@' + (id & 0x1f);
+ id >>= 5;
+ vendor[0] = '@' + (id & 0x1f);
+ id >>= 5;
+
+ sprintf(s, "%s%02X%02X", vendor, device, rev);
+}
+
+static int configure_memory(const unsigned char *buf,
+ struct resource *mem_parent,
+ char *name)
+{
+ int len;
+ u_int8_t c;
+ int i;
+ struct resource *res;
+
+ len=0;
+
+ for (i=0;i<HPEE_MEMORY_MAX_ENT;i++) {
+ c = get_8(buf+len);
+
+ if (NULL != (res = kmalloc(sizeof(struct resource), GFP_KERNEL))) {
+ int result;
+
+ res->name = name;
+ res->start = mem_parent->start + get_24(buf+len+2);
+ res->end = res->start + get_16(buf+len+5)*1024;
+ res->flags = IORESOURCE_MEM;
+ printk("memory %lx-%lx ", res->start, res->end);
+ result = request_resource(mem_parent, res);
+ if (result < 0) {
+ printk("\n" KERN_ERR "EISA Enumerator: failed to claim EISA Bus address space!\n");
+ return result;
+ }
+ }
+
+ len+=7;
+
+ if (!(c & HPEE_MEMORY_MORE)) {
+ break;
+ }
+ }
+
+ return len;
+}
+
+
+static int configure_irq(const unsigned char *buf)
+{
+ int len;
+ u_int8_t c;
+ int i;
+
+ len=0;
+
+ for (i=0;i<HPEE_IRQ_MAX_ENT;i++) {
+ c = get_8(buf+len);
+
+ printk("IRQ %d ", c & HPEE_IRQ_CHANNEL_MASK);
+ if (c & HPEE_IRQ_TRIG_LEVEL) {
+ eisa_make_irq_level(c & HPEE_IRQ_CHANNEL_MASK);
+ } else {
+ eisa_make_irq_edge(c & HPEE_IRQ_CHANNEL_MASK);
+ }
+
+ len+=2;
+ /* hpux seems to allow for
+ * two bytes of irq data but only defines one of
+ * them, I think */
+ if (!(c & HPEE_IRQ_MORE)) {
+ break;
+ }
+ }
+
+ return len;
+}
+
+
+static int configure_dma(const unsigned char *buf)
+{
+ int len;
+ u_int8_t c;
+ int i;
+
+ len=0;
+
+ for (i=0;i<HPEE_DMA_MAX_ENT;i++) {
+ c = get_8(buf+len);
+ printk("DMA %d ", c&HPEE_DMA_CHANNEL_MASK);
+ /* fixme: maybe initialize the dma channel withthe timing ? */
+ len+=2;
+ if (!(c & HPEE_DMA_MORE)) {
+ break;
+ }
+ }
+
+ return len;
+}
+
+static int configure_port(const unsigned char *buf, struct resource *io_parent,
+ char *board)
+{
+ int len;
+ u_int8_t c;
+ int i;
+ struct resource *res;
+ int result;
+
+ len=0;
+
+ for (i=0;i<HPEE_PORT_MAX_ENT;i++) {
+ c = get_8(buf+len);
+
+ if (NULL != (res = kmalloc(sizeof(struct resource), GFP_KERNEL))) {
+ res->name = board;
+ res->start = get_16(buf+len+1);
+ res->end = get_16(buf+len+1)+(c&HPEE_PORT_SIZE_MASK)+1;
+ res->flags = IORESOURCE_IO;
+ printk("ioports %lx-%lx ", res->start, res->end);
+ result = request_resource(io_parent, res);
+ if (result < 0) {
+ printk("\n" KERN_ERR "EISA Enumerator: failed to claim EISA Bus address space!\n");
+ return result;
+ }
+ }
+
+ len+=3;
+ if (!(c & HPEE_PORT_MORE)) {
+ break;
+ }
+ }
+
+ return len;
+}
+
+
+/* byte 1 and 2 is the port number to write
+ * and at byte 3 the value to write starts.
+ * I assume that there are and- and or- masks
+ * here when HPEE_PORT_INIT_MASK is set but I have
+ * not yet encountered this. */
+static int configure_port_init(const unsigned char *buf)
+{
+ int len=0;
+ u_int8_t c;
+
+ while (len<HPEE_PORT_INIT_MAX_LEN) {
+ int s=0;
+ c = get_8(buf+len);
+
+ switch (c & HPEE_PORT_INIT_WIDTH_MASK) {
+ case HPEE_PORT_INIT_WIDTH_BYTE:
+ s=1;
+ if (c & HPEE_PORT_INIT_MASK) {
+ printk("\n" KERN_WARNING "port_init: unverified mask attribute\n");
+ outb((inb(get_16(buf+len+1) &
+ get_8(buf+len+3)) |
+ get_8(buf+len+4)), get_16(buf+len+1));
+
+ } else {
+ outb(get_8(buf+len+3), get_16(buf+len+1));
+
+ }
+ break;
+ case HPEE_PORT_INIT_WIDTH_WORD:
+ s=2;
+ if (c & HPEE_PORT_INIT_MASK) {
+ printk(KERN_WARNING "port_init: unverified mask attribute\n");
+ outw((inw(get_16(buf+len+1)) &
+ get_16(buf+len+3)) |
+ get_16(buf+len+5),
+ get_16(buf+len+1));
+ } else {
+ outw(cpu_to_le16(get_16(buf+len+3)), get_16(buf+len+1));
+ }
+ break;
+ case HPEE_PORT_INIT_WIDTH_DWORD:
+ s=4;
+ if (c & HPEE_PORT_INIT_MASK) {
+ printk("\n" KERN_WARNING "port_init: unverified mask attribute\n");
+ outl((inl(get_16(buf+len+1) &
+ get_32(buf+len+3)) |
+ get_32(buf+len+7)), get_16(buf+len+1));
+ } else {
+ outl(cpu_to_le32(get_32(buf+len+3)), get_16(buf+len+1));
+ }
+
+ break;
+ default:
+ printk("\n" KERN_ERR "Invalid port init word %02x\n", c);
+ return 0;
+ }
+
+ if (c & HPEE_PORT_INIT_MASK) {
+ s*=2;
+ }
+
+ len+=s+3;
+ if (!(c & HPEE_PORT_INIT_MORE)) {
+ break;
+ }
+ }
+
+ return len;
+}
+
+static int configure_choise(const unsigned char *buf, u_int8_t *info)
+{
+ int len;
+
+ /* theis record contain the value of the functions
+ * configuration choises and an info byte which
+ * describes which other records to expect in this
+ * function */
+ len = get_8(buf);
+ *info=get_8(buf+len+1);
+
+ return len+2;
+}
+
+static int configure_type_string(const unsigned char *buf)
+{
+ int len;
+
+ /* just skip past the type field */
+ len = get_8(buf);
+ if (len > 80) {
+ printk("\n" KERN_ERR "eisa_enumerator: type info field too long (%d, max is 80)\n", len);
+ }
+
+ return 1+len;
+}
+
+static int configure_function(const unsigned char *buf, int *more)
+{
+ /* the init field seems to be a two-byte field
+ * which is non-zero if there are an other function following
+ * I think it is the length of the function def
+ */
+ *more = get_16(buf);
+
+ return 2;
+}
+
+static int parse_slot_config(int slot,
+ const unsigned char *buf,
+ struct eeprom_eisa_slot_info *es,
+ struct resource *io_parent,
+ struct resource *mem_parent)
+{
+ int res=0;
+ int function_len;
+ unsigned int pos=0;
+ unsigned int maxlen;
+ int num_func=0;
+ u_int8_t flags;
+ int p0;
+
+ char *board;
+ int id_string_used=0;
+
+ if (NULL == (board = kmalloc(8, GFP_KERNEL))) {
+ return -1;
+ }
+ print_eisa_id(board, es->eisa_slot_id);
+ printk(KERN_INFO "EISA slot %d: %s %s ",
+ slot, board, es->flags&HPEE_FLAG_BOARD_IS_ISA ? "ISA" : "EISA");
+
+ maxlen = es->config_data_length < HPEE_MAX_LENGTH ?
+ es->config_data_length : HPEE_MAX_LENGTH;
+ while ((pos < maxlen) && (num_func <= es->num_functions)) {
+ pos+=configure_function(buf+pos, &function_len);
+
+ if (!function_len) {
+ break;
+ }
+ num_func++;
+ p0 = pos;
+ pos += configure_choise(buf+pos, &flags);
+
+ if (flags & HPEE_FUNCTION_INFO_F_DISABLED) {
+ /* function disabled, skip silently */
+ pos = p0 + function_len;
+ continue;
+ }
+ if (flags & HPEE_FUNCTION_INFO_CFG_FREE_FORM) {
+ /* I have no idea how to handle this */
+ printk("function %d have free-form confgiuration, skipping ",
+ num_func);
+ pos = p0 + function_len;
+ continue;
+ }
+
+ /* the ordering of the sections need
+ * more investigation.
+ * Currently I think that memory comaed before IRQ
+ * I assume the order is LSB to MSB in the
+ * info flags
+ * eg type, memory, irq, dma, port, HPEE_PORT_init
+ */
+
+ if (flags & HPEE_FUNCTION_INFO_HAVE_TYPE) {
+ pos += configure_type_string(buf+pos);
+ }
+
+ if (flags & HPEE_FUNCTION_INFO_HAVE_MEMORY) {
+ id_string_used=1;
+ pos += configure_memory(buf+pos, mem_parent, board);
+ }
+
+ if (flags & HPEE_FUNCTION_INFO_HAVE_IRQ) {
+ pos += configure_irq(buf+pos);
+ }
+
+ if (flags & HPEE_FUNCTION_INFO_HAVE_DMA) {
+ pos += configure_dma(buf+pos);
+ }
+
+ if (flags & HPEE_FUNCTION_INFO_HAVE_PORT) {
+ id_string_used=1;
+ pos += configure_port(buf+pos, io_parent, board);
+ }
+
+ if (flags & HPEE_FUNCTION_INFO_HAVE_PORT_INIT) {
+ pos += configure_port_init(buf+pos);
+ }
+
+ if (p0 + function_len < pos) {
+ printk("\n" KERN_ERR "eisa_enumerator: function %d length mis-match "
+ "got %d, expected %d\n",
+ num_func, pos-p0, function_len);
+ res=-1;
+ break;
+ }
+ pos = p0 + function_len;
+ }
+ printk("\n");
+ if (!id_string_used) {
+ kfree(board);
+ }
+
+ if (pos != es->config_data_length) {
+ printk(KERN_ERR "eisa_enumerator: config data length mis-match got %d, expected %d\n",
+ pos, es->config_data_length);
+ res=-1;
+ }
+
+ if (num_func != es->num_functions) {
+ printk(KERN_ERR "eisa_enumerator: number of functions mis-match got %d, expected %d\n",
+ num_func, es->num_functions);
+ res=-2;
+ }
+
+ return res;
+
+}
+
+static int init_slot(int slot, struct eeprom_eisa_slot_info *es)
+{
+ unsigned int id;
+
+ char id_string[8];
+
+ if (!(es->slot_info&HPEE_SLOT_INFO_NO_READID)) {
+ /* try to read the id of the board in the slot */
+ id = le32_to_cpu(inl(SLOT2PORT(slot)+EPI));
+
+ if (0xffffffff == id) {
+ /* Maybe we didn't expect a card to be here... */
+ if (es->eisa_slot_id == 0xffffffff)
+ return -1;
+
+ /* this board is not here or it does not
+ * support readid
+ */
+ printk(KERN_ERR "EISA slot %d a configured board was not detected (",
+ slot);
+
+ print_eisa_id(id_string, es->eisa_slot_id);
+ printk(" expected %s)\n", id_string);
+
+ return -1;
+
+ }
+ if (es->eisa_slot_id != id) {
+ print_eisa_id(id_string, id);
+ printk(KERN_ERR "EISA slot %d id mis-match: got %s",
+ slot, id_string);
+
+ print_eisa_id(id_string, es->eisa_slot_id);
+ printk(" expected %s \n", id_string);
+
+ return -1;
+
+ }
+ }
+
+ /* now: we need to enable the board if
+ * it supports enabling and run through
+ * the port init sction if present
+ * and finally record any interrupt polarity
+ */
+ if (es->slot_features & HPEE_SLOT_FEATURES_ENABLE) {
+ /* enable board */
+ outb(0x01| inb(SLOT2PORT(slot)+EPI+4),
+ SLOT2PORT(slot)+EPI+4);
+ }
+
+ return 0;
+}
+
+
+int eisa_enumerator(unsigned long eeprom_addr,
+ struct resource *io_parent, struct resource *mem_parent)
+{
+ int i;
+ struct eeprom_header *eh;
+ static char eeprom_buf[HPEE_MAX_LENGTH];
+
+ for (i=0; i < HPEE_MAX_LENGTH; i++) {
+ eeprom_buf[i] = gsc_readb(eeprom_addr+i);
+ }
+
+ printk(KERN_INFO "Enumerating EISA bus\n");
+
+ eh = (struct eeprom_header*)(eeprom_buf);
+ for (i=0;i<eh->num_slots;i++) {
+ struct eeprom_eisa_slot_info *es;
+
+ es = (struct eeprom_eisa_slot_info*)
+ (&eeprom_buf[HPEE_SLOT_INFO(i)]);
+
+ if (-1==init_slot(i+1, es)) {
+ continue;
+ }
+
+ if (es->config_data_offset < HPEE_MAX_LENGTH) {
+ if (parse_slot_config(i+1, &eeprom_buf[es->config_data_offset],
+ es, io_parent, mem_parent)) {
+ return -1;
+ }
+ } else {
+ printk (KERN_WARNING "EISA EEPROM offset 0x%x out of range\n",es->config_data_offset);
+ return -1;
+ }
+ }
+ return eh->num_slots;
+}
+
diff --git a/drivers/parisc/gsc.c b/drivers/parisc/gsc.c
new file mode 100644
index 000000000000..af5e02526a18
--- /dev/null
+++ b/drivers/parisc/gsc.c
@@ -0,0 +1,245 @@
+/*
+ * Interrupt management for most GSC and related devices.
+ *
+ * (c) Copyright 1999 Alex deVries for The Puffin Group
+ * (c) Copyright 1999 Grant Grundler for Hewlett-Packard
+ * (c) Copyright 1999 Matthew Wilcox
+ * (c) Copyright 2000 Helge Deller
+ * (c) Copyright 2001 Matthew Wilcox for Hewlett-Packard
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/bitops.h>
+#include <linux/config.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#include <asm/hardware.h>
+#include <asm/io.h>
+
+#include "gsc.h"
+
+#undef DEBUG
+
+#ifdef DEBUG
+#define DEBPRINTK printk
+#else
+#define DEBPRINTK(x,...)
+#endif
+
+int gsc_alloc_irq(struct gsc_irq *i)
+{
+ int irq = txn_alloc_irq(GSC_EIM_WIDTH);
+ if (irq < 0) {
+ printk("cannot get irq\n");
+ return irq;
+ }
+
+ i->txn_addr = txn_alloc_addr(irq);
+ i->txn_data = txn_alloc_data(irq);
+ i->irq = irq;
+
+ return irq;
+}
+
+int gsc_claim_irq(struct gsc_irq *i, int irq)
+{
+ int c = irq;
+
+ irq += CPU_IRQ_BASE; /* virtualize the IRQ first */
+
+ irq = txn_claim_irq(irq);
+ if (irq < 0) {
+ printk("cannot claim irq %d\n", c);
+ return irq;
+ }
+
+ i->txn_addr = txn_alloc_addr(irq);
+ i->txn_data = txn_alloc_data(irq);
+ i->irq = irq;
+
+ return irq;
+}
+
+EXPORT_SYMBOL(gsc_alloc_irq);
+EXPORT_SYMBOL(gsc_claim_irq);
+
+/* Common interrupt demultiplexer used by Asp, Lasi & Wax. */
+irqreturn_t gsc_asic_intr(int gsc_asic_irq, void *dev, struct pt_regs *regs)
+{
+ unsigned long irr;
+ struct gsc_asic *gsc_asic = dev;
+
+ irr = gsc_readl(gsc_asic->hpa + OFFSET_IRR);
+ if (irr == 0)
+ return IRQ_NONE;
+
+ DEBPRINTK("%s intr, mask=0x%x\n", gsc_asic->name, irr);
+
+ do {
+ int local_irq = __ffs(irr);
+ unsigned int irq = gsc_asic->global_irq[local_irq];
+ __do_IRQ(irq, regs);
+ irr &= ~(1 << local_irq);
+ } while (irr);
+
+ return IRQ_HANDLED;
+}
+
+int gsc_find_local_irq(unsigned int irq, int *global_irqs, int limit)
+{
+ int local_irq;
+
+ for (local_irq = 0; local_irq < limit; local_irq++) {
+ if (global_irqs[local_irq] == irq)
+ return local_irq;
+ }
+
+ return NO_IRQ;
+}
+
+static void gsc_asic_disable_irq(unsigned int irq)
+{
+ struct gsc_asic *irq_dev = irq_desc[irq].handler_data;
+ int local_irq = gsc_find_local_irq(irq, irq_dev->global_irq, 32);
+ u32 imr;
+
+ DEBPRINTK(KERN_DEBUG "%s(%d) %s: IMR 0x%x\n", __FUNCTION__, irq,
+ irq_dev->name, imr);
+
+ /* Disable the IRQ line by clearing the bit in the IMR */
+ imr = gsc_readl(irq_dev->hpa + OFFSET_IMR);
+ imr &= ~(1 << local_irq);
+ gsc_writel(imr, irq_dev->hpa + OFFSET_IMR);
+}
+
+static void gsc_asic_enable_irq(unsigned int irq)
+{
+ struct gsc_asic *irq_dev = irq_desc[irq].handler_data;
+ int local_irq = gsc_find_local_irq(irq, irq_dev->global_irq, 32);
+ u32 imr;
+
+ DEBPRINTK(KERN_DEBUG "%s(%d) %s: IMR 0x%x\n", __FUNCTION__, irq,
+ irq_dev->name, imr);
+
+ /* Enable the IRQ line by setting the bit in the IMR */
+ imr = gsc_readl(irq_dev->hpa + OFFSET_IMR);
+ imr |= 1 << local_irq;
+ gsc_writel(imr, irq_dev->hpa + OFFSET_IMR);
+ /*
+ * FIXME: read IPR to make sure the IRQ isn't already pending.
+ * If so, we need to read IRR and manually call do_irq().
+ */
+}
+
+static unsigned int gsc_asic_startup_irq(unsigned int irq)
+{
+ gsc_asic_enable_irq(irq);
+ return 0;
+}
+
+static struct hw_interrupt_type gsc_asic_interrupt_type = {
+ .typename = "GSC-ASIC",
+ .startup = gsc_asic_startup_irq,
+ .shutdown = gsc_asic_disable_irq,
+ .enable = gsc_asic_enable_irq,
+ .disable = gsc_asic_disable_irq,
+ .ack = no_ack_irq,
+ .end = no_end_irq,
+};
+
+int gsc_assign_irq(struct hw_interrupt_type *type, void *data)
+{
+ static int irq = GSC_IRQ_BASE;
+
+ if (irq > GSC_IRQ_MAX)
+ return NO_IRQ;
+
+ irq_desc[irq].handler = type;
+ irq_desc[irq].handler_data = data;
+ return irq++;
+}
+
+void gsc_asic_assign_irq(struct gsc_asic *asic, int local_irq, int *irqp)
+{
+ int irq = asic->global_irq[local_irq];
+
+ if (irq <= 0) {
+ irq = gsc_assign_irq(&gsc_asic_interrupt_type, asic);
+ if (irq == NO_IRQ)
+ return;
+
+ asic->global_irq[local_irq] = irq;
+ }
+ *irqp = irq;
+}
+
+void gsc_fixup_irqs(struct parisc_device *parent, void *ctrl,
+ void (*choose_irq)(struct parisc_device *, void *))
+{
+ struct device *dev;
+
+ list_for_each_entry(dev, &parent->dev.children, node) {
+ struct parisc_device *padev = to_parisc_device(dev);
+
+ /* work-around for 715/64 and others which have parent
+ at path [5] and children at path [5/0/x] */
+ if (padev->id.hw_type == HPHW_FAULTY)
+ return gsc_fixup_irqs(padev, ctrl, choose_irq);
+ choose_irq(padev, ctrl);
+ }
+}
+
+int gsc_common_setup(struct parisc_device *parent, struct gsc_asic *gsc_asic)
+{
+ struct resource *res;
+ int i;
+
+ gsc_asic->gsc = parent;
+
+ /* Initialise local irq -> global irq mapping */
+ for (i = 0; i < 32; i++) {
+ gsc_asic->global_irq[i] = NO_IRQ;
+ }
+
+ /* allocate resource region */
+ res = request_mem_region(gsc_asic->hpa, 0x100000, gsc_asic->name);
+ if (res) {
+ res->flags = IORESOURCE_MEM; /* do not mark it busy ! */
+ }
+
+#if 0
+ printk(KERN_WARNING "%s IRQ %d EIM 0x%x", gsc_asic->name,
+ parent->irq, gsc_asic->eim);
+ if (gsc_readl(gsc_asic->hpa + OFFSET_IMR))
+ printk(" IMR is non-zero! (0x%x)",
+ gsc_readl(gsc_asic->hpa + OFFSET_IMR));
+ printk("\n");
+#endif
+
+ return 0;
+}
+
+extern struct parisc_driver lasi_driver;
+extern struct parisc_driver asp_driver;
+extern struct parisc_driver wax_driver;
+
+void __init gsc_init(void)
+{
+#ifdef CONFIG_GSC_LASI
+ register_parisc_driver(&lasi_driver);
+ register_parisc_driver(&asp_driver);
+#endif
+#ifdef CONFIG_GSC_WAX
+ register_parisc_driver(&wax_driver);
+#endif
+}
diff --git a/drivers/parisc/gsc.h b/drivers/parisc/gsc.h
new file mode 100644
index 000000000000..a3dc456709d7
--- /dev/null
+++ b/drivers/parisc/gsc.h
@@ -0,0 +1,47 @@
+/*
+ * drivers/parisc/gsc.h
+ * Declarations for functions in gsc.c
+ * Copyright (c) 2000-2002 Helge Deller, Matthew Wilcox
+ *
+ * Distributed under the terms of the GPL, version 2
+ */
+
+#include <linux/interrupt.h>
+#include <asm/hardware.h>
+#include <asm/parisc-device.h>
+
+#define OFFSET_IRR 0x0000 /* Interrupt request register */
+#define OFFSET_IMR 0x0004 /* Interrupt mask register */
+#define OFFSET_IPR 0x0008 /* Interrupt pending register */
+#define OFFSET_ICR 0x000C /* Interrupt control register */
+#define OFFSET_IAR 0x0010 /* Interrupt address register */
+
+/* PA I/O Architected devices support at least 5 bits in the EIM register. */
+#define GSC_EIM_WIDTH 5
+
+struct gsc_irq {
+ unsigned long txn_addr; /* IRQ "target" */
+ int txn_data; /* HW "IRQ" */
+ int irq; /* virtual IRQ */
+};
+
+struct gsc_asic {
+ struct parisc_device *gsc;
+ unsigned long hpa;
+ char *name;
+ int version;
+ int type;
+ int eim;
+ int global_irq[32];
+};
+
+int gsc_common_setup(struct parisc_device *parent, struct gsc_asic *gsc_asic);
+int gsc_alloc_irq(struct gsc_irq *dev); /* dev needs an irq */
+int gsc_claim_irq(struct gsc_irq *dev, int irq); /* dev needs this irq */
+int gsc_assign_irq(struct hw_interrupt_type *type, void *data);
+int gsc_find_local_irq(unsigned int irq, int *global_irq, int limit);
+void gsc_fixup_irqs(struct parisc_device *parent, void *ctrl,
+ void (*choose)(struct parisc_device *child, void *ctrl));
+void gsc_asic_assign_irq(struct gsc_asic *asic, int local_irq, int *irqp);
+
+irqreturn_t gsc_asic_intr(int irq, void *dev, struct pt_regs *regs);
diff --git a/drivers/parisc/hppb.c b/drivers/parisc/hppb.c
new file mode 100644
index 000000000000..e869c6020370
--- /dev/null
+++ b/drivers/parisc/hppb.c
@@ -0,0 +1,109 @@
+/*
+** hppb.c:
+** HP-PB bus driver for the NOVA and K-Class systems.
+**
+** (c) Copyright 2002 Ryan Bradetich
+** (c) Copyright 2002 Hewlett-Packard Company
+**
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License as published by
+** the Free Software Foundation; either version 2 of the License, or
+** (at your option) any later version.
+**
+** This Driver currently only supports the console (port 0) on the MUX.
+** Additional work will be needed on this driver to enable the full
+** functionality of the MUX.
+**
+*/
+
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/ioport.h>
+
+#include <asm/io.h>
+#include <asm/hardware.h>
+#include <asm/parisc-device.h>
+
+#include <linux/pci.h>
+
+struct hppb_card {
+ unsigned long hpa;
+ struct resource mmio_region;
+ struct hppb_card *next;
+};
+
+struct hppb_card hppb_card_head = {
+ .hpa = 0,
+ .next = NULL,
+};
+
+#define IO_IO_LOW offsetof(struct bc_module, io_io_low)
+#define IO_IO_HIGH offsetof(struct bc_module, io_io_high)
+
+/**
+ * hppb_probe - Determine if the hppb driver should claim this device.
+ * @dev: The device which has been found
+ *
+ * Determine if hppb driver should claim this chip (return 0) or not
+ * (return 1). If so, initialize the chip and tell other partners in crime
+ * they have work to do.
+ */
+static int hppb_probe(struct parisc_device *dev)
+{
+ int status;
+ struct hppb_card *card = &hppb_card_head;
+
+ while(card->next) {
+ card = card->next;
+ }
+
+ if(card->hpa) {
+ card->next = kmalloc(sizeof(struct hppb_card), GFP_KERNEL);
+ if(!card->next) {
+ printk(KERN_ERR "HP-PB: Unable to allocate memory.\n");
+ return 1;
+ }
+ memset(card->next, '\0', sizeof(struct hppb_card));
+ card = card->next;
+ }
+ printk(KERN_INFO "Found GeckoBoa at 0x%lx\n", dev->hpa);
+
+ card->hpa = dev->hpa;
+ card->mmio_region.name = "HP-PB Bus";
+ card->mmio_region.flags = IORESOURCE_MEM;
+
+ card->mmio_region.start = __raw_readl(dev->hpa + IO_IO_LOW);
+ card->mmio_region.end = __raw_readl(dev->hpa + IO_IO_HIGH) - 1;
+
+ status = ccio_request_resource(dev, &card->mmio_region);
+ if(status < 0) {
+ printk(KERN_ERR "%s: failed to claim HP-PB bus space (%08lx, %08lx)\n",
+ __FILE__, card->mmio_region.start, card->mmio_region.end);
+ }
+
+ return 0;
+}
+
+
+static struct parisc_device_id hppb_tbl[] = {
+ { HPHW_BCPORT, HVERSION_REV_ANY_ID, 0x500, 0xc },
+ { 0, }
+};
+
+static struct parisc_driver hppb_driver = {
+ .name = "Gecko Boa",
+ .id_table = hppb_tbl,
+ .probe = hppb_probe,
+};
+
+/**
+ * hppb_init - HP-PB bus initalization procedure.
+ *
+ * Register this driver.
+ */
+void __init hppb_init(void)
+{
+ register_parisc_driver(&hppb_driver);
+}
diff --git a/drivers/parisc/iommu-helpers.h b/drivers/parisc/iommu-helpers.h
new file mode 100644
index 000000000000..38d9e1aba1d0
--- /dev/null
+++ b/drivers/parisc/iommu-helpers.h
@@ -0,0 +1,171 @@
+/**
+ * iommu_fill_pdir - Insert coalesced scatter/gather chunks into the I/O Pdir.
+ * @ioc: The I/O Controller.
+ * @startsg: The scatter/gather list of coalesced chunks.
+ * @nents: The number of entries in the scatter/gather list.
+ * @hint: The DMA Hint.
+ *
+ * This function inserts the coalesced scatter/gather list chunks into the
+ * I/O Controller's I/O Pdir.
+ */
+static inline unsigned int
+iommu_fill_pdir(struct ioc *ioc, struct scatterlist *startsg, int nents,
+ unsigned long hint,
+ void (*iommu_io_pdir_entry)(u64 *, space_t, unsigned long,
+ unsigned long))
+{
+ struct scatterlist *dma_sg = startsg; /* pointer to current DMA */
+ unsigned int n_mappings = 0;
+ unsigned long dma_offset = 0, dma_len = 0;
+ u64 *pdirp = NULL;
+
+ /* Horrible hack. For efficiency's sake, dma_sg starts one
+ * entry below the true start (it is immediately incremented
+ * in the loop) */
+ dma_sg--;
+
+ while (nents-- > 0) {
+ unsigned long vaddr;
+ long size;
+
+ DBG_RUN_SG(" %d : %08lx/%05x %08lx/%05x\n", nents,
+ (unsigned long)sg_dma_address(startsg), cnt,
+ sg_virt_addr(startsg), startsg->length
+ );
+
+
+ /*
+ ** Look for the start of a new DMA stream
+ */
+
+ if (sg_dma_address(startsg) & PIDE_FLAG) {
+ u32 pide = sg_dma_address(startsg) & ~PIDE_FLAG;
+
+ BUG_ON(pdirp && (dma_len != sg_dma_len(dma_sg)));
+
+ dma_sg++;
+
+ dma_len = sg_dma_len(startsg);
+ sg_dma_len(startsg) = 0;
+ dma_offset = (unsigned long) pide & ~IOVP_MASK;
+ n_mappings++;
+#if defined(ZX1_SUPPORT)
+ /* Pluto IOMMU IO Virt Address is not zero based */
+ sg_dma_address(dma_sg) = pide | ioc->ibase;
+#else
+ /* SBA, ccio, and dino are zero based.
+ * Trying to save a few CPU cycles for most users.
+ */
+ sg_dma_address(dma_sg) = pide;
+#endif
+ pdirp = &(ioc->pdir_base[pide >> IOVP_SHIFT]);
+ prefetchw(pdirp);
+ }
+
+ BUG_ON(pdirp == NULL);
+
+ vaddr = sg_virt_addr(startsg);
+ sg_dma_len(dma_sg) += startsg->length;
+ size = startsg->length + dma_offset;
+ dma_offset = 0;
+#ifdef IOMMU_MAP_STATS
+ ioc->msg_pages += startsg->length >> IOVP_SHIFT;
+#endif
+ do {
+ iommu_io_pdir_entry(pdirp, KERNEL_SPACE,
+ vaddr, hint);
+ vaddr += IOVP_SIZE;
+ size -= IOVP_SIZE;
+ pdirp++;
+ } while(unlikely(size > 0));
+ startsg++;
+ }
+ return(n_mappings);
+}
+
+
+/*
+** First pass is to walk the SG list and determine where the breaks are
+** in the DMA stream. Allocates PDIR entries but does not fill them.
+** Returns the number of DMA chunks.
+**
+** Doing the fill separate from the coalescing/allocation keeps the
+** code simpler. Future enhancement could make one pass through
+** the sglist do both.
+*/
+
+static inline unsigned int
+iommu_coalesce_chunks(struct ioc *ioc, struct scatterlist *startsg, int nents,
+ int (*iommu_alloc_range)(struct ioc *, size_t))
+{
+ struct scatterlist *contig_sg; /* contig chunk head */
+ unsigned long dma_offset, dma_len; /* start/len of DMA stream */
+ unsigned int n_mappings = 0;
+
+ while (nents > 0) {
+
+ /*
+ ** Prepare for first/next DMA stream
+ */
+ contig_sg = startsg;
+ dma_len = startsg->length;
+ dma_offset = sg_virt_addr(startsg) & ~IOVP_MASK;
+
+ /* PARANOID: clear entries */
+ sg_dma_address(startsg) = 0;
+ sg_dma_len(startsg) = 0;
+
+ /*
+ ** This loop terminates one iteration "early" since
+ ** it's always looking one "ahead".
+ */
+ while(--nents > 0) {
+ unsigned long prevstartsg_end, startsg_end;
+
+ prevstartsg_end = sg_virt_addr(startsg) +
+ startsg->length;
+
+ startsg++;
+ startsg_end = sg_virt_addr(startsg) +
+ startsg->length;
+
+ /* PARANOID: clear entries */
+ sg_dma_address(startsg) = 0;
+ sg_dma_len(startsg) = 0;
+
+ /*
+ ** First make sure current dma stream won't
+ ** exceed DMA_CHUNK_SIZE if we coalesce the
+ ** next entry.
+ */
+ if(unlikely(ROUNDUP(dma_len + dma_offset + startsg->length,
+ IOVP_SIZE) > DMA_CHUNK_SIZE))
+ break;
+
+ /*
+ ** Next see if we can append the next chunk (i.e.
+ ** it must end on one page and begin on another
+ */
+ if (unlikely(((prevstartsg_end | sg_virt_addr(startsg)) & ~PAGE_MASK) != 0))
+ break;
+
+ dma_len += startsg->length;
+ }
+
+ /*
+ ** End of DMA Stream
+ ** Terminate last VCONTIG block.
+ ** Allocate space for DMA stream.
+ */
+ sg_dma_len(contig_sg) = dma_len;
+ dma_len = ROUNDUP(dma_len + dma_offset, IOVP_SIZE);
+ sg_dma_address(contig_sg) =
+ PIDE_FLAG
+ | (iommu_alloc_range(ioc, dma_len) << IOVP_SHIFT)
+ | dma_offset;
+ n_mappings++;
+ }
+
+ return n_mappings;
+}
+
diff --git a/drivers/parisc/iosapic.c b/drivers/parisc/iosapic.c
new file mode 100644
index 000000000000..91df0bf181dd
--- /dev/null
+++ b/drivers/parisc/iosapic.c
@@ -0,0 +1,921 @@
+/*
+** I/O Sapic Driver - PCI interrupt line support
+**
+** (c) Copyright 1999 Grant Grundler
+** (c) Copyright 1999 Hewlett-Packard Company
+**
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License as published by
+** the Free Software Foundation; either version 2 of the License, or
+** (at your option) any later version.
+**
+** The I/O sapic driver manages the Interrupt Redirection Table which is
+** the control logic to convert PCI line based interrupts into a Message
+** Signaled Interrupt (aka Transaction Based Interrupt, TBI).
+**
+** Acronyms
+** --------
+** HPA Hard Physical Address (aka MMIO address)
+** IRQ Interrupt ReQuest. Implies Line based interrupt.
+** IRT Interrupt Routing Table (provided by PAT firmware)
+** IRdT Interrupt Redirection Table. IRQ line to TXN ADDR/DATA
+** table which is implemented in I/O SAPIC.
+** ISR Interrupt Service Routine. aka Interrupt handler.
+** MSI Message Signaled Interrupt. PCI 2.2 functionality.
+** aka Transaction Based Interrupt (or TBI).
+** PA Precision Architecture. HP's RISC architecture.
+** RISC Reduced Instruction Set Computer.
+**
+**
+** What's a Message Signalled Interrupt?
+** -------------------------------------
+** MSI is a write transaction which targets a processor and is similar
+** to a processor write to memory or MMIO. MSIs can be generated by I/O
+** devices as well as processors and require *architecture* to work.
+**
+** PA only supports MSI. So I/O subsystems must either natively generate
+** MSIs (e.g. GSC or HP-PB) or convert line based interrupts into MSIs
+** (e.g. PCI and EISA). IA64 supports MSIs via a "local SAPIC" which
+** acts on behalf of a processor.
+**
+** MSI allows any I/O device to interrupt any processor. This makes
+** load balancing of the interrupt processing possible on an SMP platform.
+** Interrupts are also ordered WRT to DMA data. It's possible on I/O
+** coherent systems to completely eliminate PIO reads from the interrupt
+** path. The device and driver must be designed and implemented to
+** guarantee all DMA has been issued (issues about atomicity here)
+** before the MSI is issued. I/O status can then safely be read from
+** DMA'd data by the ISR.
+**
+**
+** PA Firmware
+** -----------
+** PA-RISC platforms have two fundementally different types of firmware.
+** For PCI devices, "Legacy" PDC initializes the "INTERRUPT_LINE" register
+** and BARs similar to a traditional PC BIOS.
+** The newer "PAT" firmware supports PDC calls which return tables.
+** PAT firmware only initializes PCI Console and Boot interface.
+** With these tables, the OS can progam all other PCI devices.
+**
+** One such PAT PDC call returns the "Interrupt Routing Table" (IRT).
+** The IRT maps each PCI slot's INTA-D "output" line to an I/O SAPIC
+** input line. If the IRT is not available, this driver assumes
+** INTERRUPT_LINE register has been programmed by firmware. The latter
+** case also means online addition of PCI cards can NOT be supported
+** even if HW support is present.
+**
+** All platforms with PAT firmware to date (Oct 1999) use one Interrupt
+** Routing Table for the entire platform.
+**
+** Where's the iosapic?
+** --------------------
+** I/O sapic is part of the "Core Electronics Complex". And on HP platforms
+** it's integrated as part of the PCI bus adapter, "lba". So no bus walk
+** will discover I/O Sapic. I/O Sapic driver learns about each device
+** when lba driver advertises the presence of the I/O sapic by calling
+** iosapic_register().
+**
+**
+** IRQ handling notes
+** ------------------
+** The IO-SAPIC can indicate to the CPU which interrupt was asserted.
+** So, unlike the GSC-ASIC and Dino, we allocate one CPU interrupt per
+** IO-SAPIC interrupt and call the device driver's handler directly.
+** The IO-SAPIC driver hijacks the CPU interrupt handler so it can
+** issue the End Of Interrupt command to the IO-SAPIC.
+**
+** Overview of exported iosapic functions
+** --------------------------------------
+** (caveat: code isn't finished yet - this is just the plan)
+**
+** iosapic_init:
+** o initialize globals (lock, etc)
+** o try to read IRT. Presence of IRT determines if this is
+** a PAT platform or not.
+**
+** iosapic_register():
+** o create iosapic_info instance data structure
+** o allocate vector_info array for this iosapic
+** o initialize vector_info - read corresponding IRdT?
+**
+** iosapic_xlate_pin: (only called by fixup_irq for PAT platform)
+** o intr_pin = read cfg (INTERRUPT_PIN);
+** o if (device under PCI-PCI bridge)
+** translate slot/pin
+**
+** iosapic_fixup_irq:
+** o if PAT platform (IRT present)
+** intr_pin = iosapic_xlate_pin(isi,pcidev):
+** intr_line = find IRT entry(isi, PCI_SLOT(pcidev), intr_pin)
+** save IRT entry into vector_info later
+** write cfg INTERRUPT_LINE (with intr_line)?
+** else
+** intr_line = pcidev->irq
+** IRT pointer = NULL
+** endif
+** o locate vector_info (needs: isi, intr_line)
+** o allocate processor "irq" and get txn_addr/data
+** o request_irq(processor_irq, iosapic_interrupt, vector_info,...)
+**
+** iosapic_enable_irq:
+** o clear any pending IRQ on that line
+** o enable IRdT - call enable_irq(vector[line]->processor_irq)
+** o write EOI in case line is already asserted.
+**
+** iosapic_disable_irq:
+** o disable IRdT - call disable_irq(vector[line]->processor_irq)
+*/
+
+
+/* FIXME: determine which include files are really needed */
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/spinlock.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+
+#include <asm/byteorder.h> /* get in-line asm for swab */
+#include <asm/pdc.h>
+#include <asm/pdcpat.h>
+#include <asm/page.h>
+#include <asm/system.h>
+#include <asm/io.h> /* read/write functions */
+#ifdef CONFIG_SUPERIO
+#include <asm/superio.h>
+#endif
+
+#include <asm/iosapic.h>
+#include "./iosapic_private.h"
+
+#define MODULE_NAME "iosapic"
+
+/* "local" compile flags */
+#undef PCI_BRIDGE_FUNCS
+#undef DEBUG_IOSAPIC
+#undef DEBUG_IOSAPIC_IRT
+
+
+#ifdef DEBUG_IOSAPIC
+#define DBG(x...) printk(x)
+#else /* DEBUG_IOSAPIC */
+#define DBG(x...)
+#endif /* DEBUG_IOSAPIC */
+
+#ifdef DEBUG_IOSAPIC_IRT
+#define DBG_IRT(x...) printk(x)
+#else
+#define DBG_IRT(x...)
+#endif
+
+#ifdef CONFIG_64BIT
+#define COMPARE_IRTE_ADDR(irte, hpa) ((irte)->dest_iosapic_addr == (hpa))
+#else
+#define COMPARE_IRTE_ADDR(irte, hpa) \
+ ((irte)->dest_iosapic_addr == ((hpa) | 0xffffffff00000000ULL))
+#endif
+
+#define IOSAPIC_REG_SELECT 0x00
+#define IOSAPIC_REG_WINDOW 0x10
+#define IOSAPIC_REG_EOI 0x40
+
+#define IOSAPIC_REG_VERSION 0x1
+
+#define IOSAPIC_IRDT_ENTRY(idx) (0x10+(idx)*2)
+#define IOSAPIC_IRDT_ENTRY_HI(idx) (0x11+(idx)*2)
+
+static inline unsigned int iosapic_read(void __iomem *iosapic, unsigned int reg)
+{
+ writel(reg, iosapic + IOSAPIC_REG_SELECT);
+ return readl(iosapic + IOSAPIC_REG_WINDOW);
+}
+
+static inline void iosapic_write(void __iomem *iosapic, unsigned int reg, u32 val)
+{
+ writel(reg, iosapic + IOSAPIC_REG_SELECT);
+ writel(val, iosapic + IOSAPIC_REG_WINDOW);
+}
+
+#define IOSAPIC_VERSION_MASK 0x000000ff
+#define IOSAPIC_VERSION(ver) ((int) (ver & IOSAPIC_VERSION_MASK))
+
+#define IOSAPIC_MAX_ENTRY_MASK 0x00ff0000
+#define IOSAPIC_MAX_ENTRY_SHIFT 0x10
+#define IOSAPIC_IRDT_MAX_ENTRY(ver) \
+ (int) (((ver) & IOSAPIC_MAX_ENTRY_MASK) >> IOSAPIC_MAX_ENTRY_SHIFT)
+
+/* bits in the "low" I/O Sapic IRdT entry */
+#define IOSAPIC_IRDT_ENABLE 0x10000
+#define IOSAPIC_IRDT_PO_LOW 0x02000
+#define IOSAPIC_IRDT_LEVEL_TRIG 0x08000
+#define IOSAPIC_IRDT_MODE_LPRI 0x00100
+
+/* bits in the "high" I/O Sapic IRdT entry */
+#define IOSAPIC_IRDT_ID_EID_SHIFT 0x10
+
+
+static spinlock_t iosapic_lock = SPIN_LOCK_UNLOCKED;
+
+static inline void iosapic_eoi(void __iomem *addr, unsigned int data)
+{
+ __raw_writel(data, addr);
+}
+
+/*
+** REVISIT: future platforms may have more than one IRT.
+** If so, the following three fields form a structure which
+** then be linked into a list. Names are chosen to make searching
+** for them easy - not necessarily accurate (eg "cell").
+**
+** Alternative: iosapic_info could point to the IRT it's in.
+** iosapic_register() could search a list of IRT's.
+*/
+static struct irt_entry *irt_cell;
+static size_t irt_num_entry;
+
+static struct irt_entry *iosapic_alloc_irt(int num_entries)
+{
+ unsigned long a;
+
+ /* The IRT needs to be 8-byte aligned for the PDC call.
+ * Normally kmalloc would guarantee larger alignment, but
+ * if CONFIG_DEBUG_SLAB is enabled, then we can get only
+ * 4-byte alignment on 32-bit kernels
+ */
+ a = (unsigned long)kmalloc(sizeof(struct irt_entry) * num_entries + 8, GFP_KERNEL);
+ a = (a + 7) & ~7;
+ return (struct irt_entry *)a;
+}
+
+/**
+ * iosapic_load_irt - Fill in the interrupt routing table
+ * @cell_num: The cell number of the CPU we're currently executing on
+ * @irt: The address to place the new IRT at
+ * @return The number of entries found
+ *
+ * The "Get PCI INT Routing Table Size" option returns the number of
+ * entries in the PCI interrupt routing table for the cell specified
+ * in the cell_number argument. The cell number must be for a cell
+ * within the caller's protection domain.
+ *
+ * The "Get PCI INT Routing Table" option returns, for the cell
+ * specified in the cell_number argument, the PCI interrupt routing
+ * table in the caller allocated memory pointed to by mem_addr.
+ * We assume the IRT only contains entries for I/O SAPIC and
+ * calculate the size based on the size of I/O sapic entries.
+ *
+ * The PCI interrupt routing table entry format is derived from the
+ * IA64 SAL Specification 2.4. The PCI interrupt routing table defines
+ * the routing of PCI interrupt signals between the PCI device output
+ * "pins" and the IO SAPICs' input "lines" (including core I/O PCI
+ * devices). This table does NOT include information for devices/slots
+ * behind PCI to PCI bridges. See PCI to PCI Bridge Architecture Spec.
+ * for the architected method of routing of IRQ's behind PPB's.
+ */
+
+
+static int __init
+iosapic_load_irt(unsigned long cell_num, struct irt_entry **irt)
+{
+ long status; /* PDC return value status */
+ struct irt_entry *table; /* start of interrupt routing tbl */
+ unsigned long num_entries = 0UL;
+
+ BUG_ON(!irt);
+
+ if (is_pdc_pat()) {
+ /* Use pat pdc routine to get interrupt routing table size */
+ DBG("calling get_irt_size (cell %ld)\n", cell_num);
+ status = pdc_pat_get_irt_size(&num_entries, cell_num);
+ DBG("get_irt_size: %ld\n", status);
+
+ BUG_ON(status != PDC_OK);
+ BUG_ON(num_entries == 0);
+
+ /*
+ ** allocate memory for interrupt routing table
+ ** This interface isn't really right. We are assuming
+ ** the contents of the table are exclusively
+ ** for I/O sapic devices.
+ */
+ table = iosapic_alloc_irt(num_entries);
+ if (table == NULL) {
+ printk(KERN_WARNING MODULE_NAME ": read_irt : can "
+ "not alloc mem for IRT\n");
+ return 0;
+ }
+
+ /* get PCI INT routing table */
+ status = pdc_pat_get_irt(table, cell_num);
+ DBG("pdc_pat_get_irt: %ld\n", status);
+ WARN_ON(status != PDC_OK);
+ } else {
+ /*
+ ** C3000/J5000 (and similar) platforms with Sprockets PDC
+ ** will return exactly one IRT for all iosapics.
+ ** So if we have one, don't need to get it again.
+ */
+ if (irt_cell)
+ return 0;
+
+ /* Should be using the Elroy's HPA, but it's ignored anyway */
+ status = pdc_pci_irt_size(&num_entries, 0);
+ DBG("pdc_pci_irt_size: %ld\n", status);
+
+ if (status != PDC_OK) {
+ /* Not a "legacy" system with I/O SAPIC either */
+ return 0;
+ }
+
+ BUG_ON(num_entries == 0);
+
+ table = iosapic_alloc_irt(num_entries);
+ if (!table) {
+ printk(KERN_WARNING MODULE_NAME ": read_irt : can "
+ "not alloc mem for IRT\n");
+ return 0;
+ }
+
+ /* HPA ignored by this call too. */
+ status = pdc_pci_irt(num_entries, 0, table);
+ BUG_ON(status != PDC_OK);
+ }
+
+ /* return interrupt table address */
+ *irt = table;
+
+#ifdef DEBUG_IOSAPIC_IRT
+{
+ struct irt_entry *p = table;
+ int i;
+
+ printk(MODULE_NAME " Interrupt Routing Table (cell %ld)\n", cell_num);
+ printk(MODULE_NAME " start = 0x%p num_entries %ld entry_size %d\n",
+ table,
+ num_entries,
+ (int) sizeof(struct irt_entry));
+
+ for (i = 0 ; i < num_entries ; i++, p++) {
+ printk(MODULE_NAME " %02x %02x %02x %02x %02x %02x %02x %02x %08x%08x\n",
+ p->entry_type, p->entry_length, p->interrupt_type,
+ p->polarity_trigger, p->src_bus_irq_devno, p->src_bus_id,
+ p->src_seg_id, p->dest_iosapic_intin,
+ ((u32 *) p)[2],
+ ((u32 *) p)[3]
+ );
+ }
+}
+#endif /* DEBUG_IOSAPIC_IRT */
+
+ return num_entries;
+}
+
+
+
+void __init iosapic_init(void)
+{
+ unsigned long cell = 0;
+
+ DBG("iosapic_init()\n");
+
+#ifdef __LP64__
+ if (is_pdc_pat()) {
+ int status;
+ struct pdc_pat_cell_num cell_info;
+
+ status = pdc_pat_cell_get_number(&cell_info);
+ if (status == PDC_OK) {
+ cell = cell_info.cell_num;
+ }
+ }
+#endif
+
+ /* get interrupt routing table for this cell */
+ irt_num_entry = iosapic_load_irt(cell, &irt_cell);
+ if (irt_num_entry == 0)
+ irt_cell = NULL; /* old PDC w/o iosapic */
+}
+
+
+/*
+** Return the IRT entry in case we need to look something else up.
+*/
+static struct irt_entry *
+irt_find_irqline(struct iosapic_info *isi, u8 slot, u8 intr_pin)
+{
+ struct irt_entry *i = irt_cell;
+ int cnt; /* track how many entries we've looked at */
+ u8 irq_devno = (slot << IRT_DEV_SHIFT) | (intr_pin-1);
+
+ DBG_IRT("irt_find_irqline() SLOT %d pin %d\n", slot, intr_pin);
+
+ for (cnt=0; cnt < irt_num_entry; cnt++, i++) {
+
+ /*
+ ** Validate: entry_type, entry_length, interrupt_type
+ **
+ ** Difference between validate vs compare is the former
+ ** should print debug info and is not expected to "fail"
+ ** on current platforms.
+ */
+ if (i->entry_type != IRT_IOSAPIC_TYPE) {
+ DBG_IRT(KERN_WARNING MODULE_NAME ":find_irqline(0x%p): skipping entry %d type %d\n", i, cnt, i->entry_type);
+ continue;
+ }
+
+ if (i->entry_length != IRT_IOSAPIC_LENGTH) {
+ DBG_IRT(KERN_WARNING MODULE_NAME ":find_irqline(0x%p): skipping entry %d length %d\n", i, cnt, i->entry_length);
+ continue;
+ }
+
+ if (i->interrupt_type != IRT_VECTORED_INTR) {
+ DBG_IRT(KERN_WARNING MODULE_NAME ":find_irqline(0x%p): skipping entry %d interrupt_type %d\n", i, cnt, i->interrupt_type);
+ continue;
+ }
+
+ if (!COMPARE_IRTE_ADDR(i, isi->isi_hpa))
+ continue;
+
+ if ((i->src_bus_irq_devno & IRT_IRQ_DEVNO_MASK) != irq_devno)
+ continue;
+
+ /*
+ ** Ignore: src_bus_id and rc_seg_id correlate with
+ ** iosapic_info->isi_hpa on HP platforms.
+ ** If needed, pass in "PFA" (aka config space addr)
+ ** instead of slot.
+ */
+
+ /* Found it! */
+ return i;
+ }
+
+ printk(KERN_WARNING MODULE_NAME ": 0x%lx : no IRT entry for slot %d, pin %d\n",
+ isi->isi_hpa, slot, intr_pin);
+ return NULL;
+}
+
+
+/*
+** xlate_pin() supports the skewing of IRQ lines done by subsidiary bridges.
+** Legacy PDC already does this translation for us and stores it in INTR_LINE.
+**
+** PAT PDC needs to basically do what legacy PDC does:
+** o read PIN
+** o adjust PIN in case device is "behind" a PPB
+** (eg 4-port 100BT and SCSI/LAN "Combo Card")
+** o convert slot/pin to I/O SAPIC input line.
+**
+** HP platforms only support:
+** o one level of skewing for any number of PPBs
+** o only support PCI-PCI Bridges.
+*/
+static struct irt_entry *
+iosapic_xlate_pin(struct iosapic_info *isi, struct pci_dev *pcidev)
+{
+ u8 intr_pin, intr_slot;
+
+ pci_read_config_byte(pcidev, PCI_INTERRUPT_PIN, &intr_pin);
+
+ DBG_IRT("iosapic_xlate_pin(%s) SLOT %d pin %d\n",
+ pcidev->slot_name, PCI_SLOT(pcidev->devfn), intr_pin);
+
+ if (intr_pin == 0) {
+ /* The device does NOT support/use IRQ lines. */
+ return NULL;
+ }
+
+ /* Check if pcidev behind a PPB */
+ if (NULL != pcidev->bus->self) {
+ /* Convert pcidev INTR_PIN into something we
+ ** can lookup in the IRT.
+ */
+#ifdef PCI_BRIDGE_FUNCS
+ /*
+ ** Proposal #1:
+ **
+ ** call implementation specific translation function
+ ** This is architecturally "cleaner". HP-UX doesn't
+ ** support other secondary bus types (eg. E/ISA) directly.
+ ** May be needed for other processor (eg IA64) architectures
+ ** or by some ambitous soul who wants to watch TV.
+ */
+ if (pci_bridge_funcs->xlate_intr_line) {
+ intr_pin = pci_bridge_funcs->xlate_intr_line(pcidev);
+ }
+#else /* PCI_BRIDGE_FUNCS */
+ struct pci_bus *p = pcidev->bus;
+ /*
+ ** Proposal #2:
+ ** The "pin" is skewed ((pin + dev - 1) % 4).
+ **
+ ** This isn't very clean since I/O SAPIC must assume:
+ ** - all platforms only have PCI busses.
+ ** - only PCI-PCI bridge (eg not PCI-EISA, PCI-PCMCIA)
+ ** - IRQ routing is only skewed once regardless of
+ ** the number of PPB's between iosapic and device.
+ ** (Bit3 expansion chassis follows this rule)
+ **
+ ** Advantage is it's really easy to implement.
+ */
+ intr_pin = ((intr_pin-1)+PCI_SLOT(pcidev->devfn)) % 4;
+ intr_pin++; /* convert back to INTA-D (1-4) */
+#endif /* PCI_BRIDGE_FUNCS */
+
+ /*
+ ** Locate the host slot the PPB nearest the Host bus
+ ** adapter.
+ */
+ while (NULL != p->parent->self)
+ p = p->parent;
+
+ intr_slot = PCI_SLOT(p->self->devfn);
+ } else {
+ intr_slot = PCI_SLOT(pcidev->devfn);
+ }
+ DBG_IRT("iosapic_xlate_pin: bus %d slot %d pin %d\n",
+ pcidev->bus->secondary, intr_slot, intr_pin);
+
+ return irt_find_irqline(isi, intr_slot, intr_pin);
+}
+
+static void iosapic_rd_irt_entry(struct vector_info *vi , u32 *dp0, u32 *dp1)
+{
+ struct iosapic_info *isp = vi->iosapic;
+ u8 idx = vi->irqline;
+
+ *dp0 = iosapic_read(isp->addr, IOSAPIC_IRDT_ENTRY(idx));
+ *dp1 = iosapic_read(isp->addr, IOSAPIC_IRDT_ENTRY_HI(idx));
+}
+
+
+static void iosapic_wr_irt_entry(struct vector_info *vi, u32 dp0, u32 dp1)
+{
+ struct iosapic_info *isp = vi->iosapic;
+
+ DBG_IRT("iosapic_wr_irt_entry(): irq %d hpa %lx 0x%x 0x%x\n",
+ vi->irqline, isp->isi_hpa, dp0, dp1);
+
+ iosapic_write(isp->addr, IOSAPIC_IRDT_ENTRY(vi->irqline), dp0);
+
+ /* Read the window register to flush the writes down to HW */
+ dp0 = readl(isp->addr+IOSAPIC_REG_WINDOW);
+
+ iosapic_write(isp->addr, IOSAPIC_IRDT_ENTRY_HI(vi->irqline), dp1);
+
+ /* Read the window register to flush the writes down to HW */
+ dp1 = readl(isp->addr+IOSAPIC_REG_WINDOW);
+}
+
+/*
+** set_irt prepares the data (dp0, dp1) according to the vector_info
+** and target cpu (id_eid). dp0/dp1 are then used to program I/O SAPIC
+** IRdT for the given "vector" (aka IRQ line).
+*/
+static void
+iosapic_set_irt_data( struct vector_info *vi, u32 *dp0, u32 *dp1)
+{
+ u32 mode = 0;
+ struct irt_entry *p = vi->irte;
+
+ if ((p->polarity_trigger & IRT_PO_MASK) == IRT_ACTIVE_LO)
+ mode |= IOSAPIC_IRDT_PO_LOW;
+
+ if (((p->polarity_trigger >> IRT_EL_SHIFT) & IRT_EL_MASK) == IRT_LEVEL_TRIG)
+ mode |= IOSAPIC_IRDT_LEVEL_TRIG;
+
+ /*
+ ** IA64 REVISIT
+ ** PA doesn't support EXTINT or LPRIO bits.
+ */
+
+ *dp0 = mode | (u32) vi->txn_data;
+
+ /*
+ ** Extracting id_eid isn't a real clean way of getting it.
+ ** But the encoding is the same for both PA and IA64 platforms.
+ */
+ if (is_pdc_pat()) {
+ /*
+ ** PAT PDC just hands it to us "right".
+ ** txn_addr comes from cpu_data[x].txn_addr.
+ */
+ *dp1 = (u32) (vi->txn_addr);
+ } else {
+ /*
+ ** eg if base_addr == 0xfffa0000),
+ ** we want to get 0xa0ff0000.
+ **
+ ** eid 0x0ff00000 -> 0x00ff0000
+ ** id 0x000ff000 -> 0xff000000
+ */
+ *dp1 = (((u32)vi->txn_addr & 0x0ff00000) >> 4) |
+ (((u32)vi->txn_addr & 0x000ff000) << 12);
+ }
+ DBG_IRT("iosapic_set_irt_data(): 0x%x 0x%x\n", *dp0, *dp1);
+}
+
+
+static struct vector_info *iosapic_get_vector(unsigned int irq)
+{
+ return irq_desc[irq].handler_data;
+}
+
+static void iosapic_disable_irq(unsigned int irq)
+{
+ unsigned long flags;
+ struct vector_info *vi = iosapic_get_vector(irq);
+ u32 d0, d1;
+
+ spin_lock_irqsave(&iosapic_lock, flags);
+ iosapic_rd_irt_entry(vi, &d0, &d1);
+ d0 |= IOSAPIC_IRDT_ENABLE;
+ iosapic_wr_irt_entry(vi, d0, d1);
+ spin_unlock_irqrestore(&iosapic_lock, flags);
+}
+
+static void iosapic_enable_irq(unsigned int irq)
+{
+ struct vector_info *vi = iosapic_get_vector(irq);
+ u32 d0, d1;
+
+ /* data is initialized by fixup_irq */
+ WARN_ON(vi->txn_irq == 0);
+
+ iosapic_set_irt_data(vi, &d0, &d1);
+ iosapic_wr_irt_entry(vi, d0, d1);
+
+#ifdef DEBUG_IOSAPIC_IRT
+{
+ u32 *t = (u32 *) ((ulong) vi->eoi_addr & ~0xffUL);
+ printk("iosapic_enable_irq(): regs %p", vi->eoi_addr);
+ for ( ; t < vi->eoi_addr; t++)
+ printk(" %x", readl(t));
+ printk("\n");
+}
+
+printk("iosapic_enable_irq(): sel ");
+{
+ struct iosapic_info *isp = vi->iosapic;
+
+ for (d0=0x10; d0<0x1e; d0++) {
+ d1 = iosapic_read(isp->addr, d0);
+ printk(" %x", d1);
+ }
+}
+printk("\n");
+#endif
+
+ /*
+ * Issuing I/O SAPIC an EOI causes an interrupt IFF IRQ line is
+ * asserted. IRQ generally should not be asserted when a driver
+ * enables their IRQ. It can lead to "interesting" race conditions
+ * in the driver initialization sequence.
+ */
+ DBG(KERN_DEBUG "enable_irq(%d): eoi(%p, 0x%x)\n", irq,
+ vi->eoi_addr, vi->eoi_data);
+ iosapic_eoi(vi->eoi_addr, vi->eoi_data);
+}
+
+/*
+ * PARISC only supports PCI devices below I/O SAPIC.
+ * PCI only supports level triggered in order to share IRQ lines.
+ * ergo I/O SAPIC must always issue EOI on parisc.
+ *
+ * i386/ia64 support ISA devices and have to deal with
+ * edge-triggered interrupts too.
+ */
+static void iosapic_end_irq(unsigned int irq)
+{
+ struct vector_info *vi = iosapic_get_vector(irq);
+ DBG(KERN_DEBUG "end_irq(%d): eoi(%p, 0x%x)\n", irq,
+ vi->eoi_addr, vi->eoi_data);
+ iosapic_eoi(vi->eoi_addr, vi->eoi_data);
+}
+
+static unsigned int iosapic_startup_irq(unsigned int irq)
+{
+ iosapic_enable_irq(irq);
+ return 0;
+}
+
+static struct hw_interrupt_type iosapic_interrupt_type = {
+ .typename = "IO-SAPIC-level",
+ .startup = iosapic_startup_irq,
+ .shutdown = iosapic_disable_irq,
+ .enable = iosapic_enable_irq,
+ .disable = iosapic_disable_irq,
+ .ack = no_ack_irq,
+ .end = iosapic_end_irq,
+// .set_affinity = iosapic_set_affinity_irq,
+};
+
+int iosapic_fixup_irq(void *isi_obj, struct pci_dev *pcidev)
+{
+ struct iosapic_info *isi = isi_obj;
+ struct irt_entry *irte = NULL; /* only used if PAT PDC */
+ struct vector_info *vi;
+ int isi_line; /* line used by device */
+
+ if (!isi) {
+ printk(KERN_WARNING MODULE_NAME ": hpa not registered for %s\n",
+ pci_name(pcidev));
+ return -1;
+ }
+
+#ifdef CONFIG_SUPERIO
+ /*
+ * HACK ALERT! (non-compliant PCI device support)
+ *
+ * All SuckyIO interrupts are routed through the PIC's on function 1.
+ * But SuckyIO OHCI USB controller gets an IRT entry anyway because
+ * it advertises INT D for INT_PIN. Use that IRT entry to get the
+ * SuckyIO interrupt routing for PICs on function 1 (*BLEECCHH*).
+ */
+ if (is_superio_device(pcidev)) {
+ /* We must call superio_fixup_irq() to register the pdev */
+ pcidev->irq = superio_fixup_irq(pcidev);
+
+ /* Don't return if need to program the IOSAPIC's IRT... */
+ if (PCI_FUNC(pcidev->devfn) != SUPERIO_USB_FN)
+ return pcidev->irq;
+ }
+#endif /* CONFIG_SUPERIO */
+
+ /* lookup IRT entry for isi/slot/pin set */
+ irte = iosapic_xlate_pin(isi, pcidev);
+ if (!irte) {
+ printk("iosapic: no IRTE for %s (IRQ not connected?)\n",
+ pci_name(pcidev));
+ return -1;
+ }
+ DBG_IRT("iosapic_fixup_irq(): irte %p %x %x %x %x %x %x %x %x\n",
+ irte,
+ irte->entry_type,
+ irte->entry_length,
+ irte->polarity_trigger,
+ irte->src_bus_irq_devno,
+ irte->src_bus_id,
+ irte->src_seg_id,
+ irte->dest_iosapic_intin,
+ (u32) irte->dest_iosapic_addr);
+ isi_line = irte->dest_iosapic_intin;
+
+ /* get vector info for this input line */
+ vi = isi->isi_vector + isi_line;
+ DBG_IRT("iosapic_fixup_irq: line %d vi 0x%p\n", isi_line, vi);
+
+ /* If this IRQ line has already been setup, skip it */
+ if (vi->irte)
+ goto out;
+
+ vi->irte = irte;
+
+ /*
+ * Allocate processor IRQ
+ *
+ * XXX/FIXME The txn_alloc_irq() code and related code should be
+ * moved to enable_irq(). That way we only allocate processor IRQ
+ * bits for devices that actually have drivers claiming them.
+ * Right now we assign an IRQ to every PCI device present,
+ * regardless of whether it's used or not.
+ */
+ vi->txn_irq = txn_alloc_irq(8);
+
+ if (vi->txn_irq < 0)
+ panic("I/O sapic: couldn't get TXN IRQ\n");
+
+ /* enable_irq() will use txn_* to program IRdT */
+ vi->txn_addr = txn_alloc_addr(vi->txn_irq);
+ vi->txn_data = txn_alloc_data(vi->txn_irq);
+
+ vi->eoi_addr = isi->addr + IOSAPIC_REG_EOI;
+ vi->eoi_data = cpu_to_le32(vi->txn_data);
+
+ cpu_claim_irq(vi->txn_irq, &iosapic_interrupt_type, vi);
+
+ out:
+ pcidev->irq = vi->txn_irq;
+
+ DBG_IRT("iosapic_fixup_irq() %d:%d %x %x line %d irq %d\n",
+ PCI_SLOT(pcidev->devfn), PCI_FUNC(pcidev->devfn),
+ pcidev->vendor, pcidev->device, isi_line, pcidev->irq);
+
+ return pcidev->irq;
+}
+
+
+/*
+** squirrel away the I/O Sapic Version
+*/
+static unsigned int
+iosapic_rd_version(struct iosapic_info *isi)
+{
+ return iosapic_read(isi->addr, IOSAPIC_REG_VERSION);
+}
+
+
+/*
+** iosapic_register() is called by "drivers" with an integrated I/O SAPIC.
+** Caller must be certain they have an I/O SAPIC and know its MMIO address.
+**
+** o allocate iosapic_info and add it to the list
+** o read iosapic version and squirrel that away
+** o read size of IRdT.
+** o allocate and initialize isi_vector[]
+** o allocate irq region
+*/
+void *iosapic_register(unsigned long hpa)
+{
+ struct iosapic_info *isi = NULL;
+ struct irt_entry *irte = irt_cell;
+ struct vector_info *vip;
+ int cnt; /* track how many entries we've looked at */
+
+ /*
+ * Astro based platforms can only support PCI OLARD if they implement
+ * PAT PDC. Legacy PDC omits LBAs with no PCI devices from the IRT.
+ * Search the IRT and ignore iosapic's which aren't in the IRT.
+ */
+ for (cnt=0; cnt < irt_num_entry; cnt++, irte++) {
+ WARN_ON(IRT_IOSAPIC_TYPE != irte->entry_type);
+ if (COMPARE_IRTE_ADDR(irte, hpa))
+ break;
+ }
+
+ if (cnt >= irt_num_entry) {
+ DBG("iosapic_register() ignoring 0x%lx (NOT FOUND)\n", hpa);
+ return NULL;
+ }
+
+ isi = (struct iosapic_info *)kmalloc(sizeof(struct iosapic_info), GFP_KERNEL);
+ if (!isi) {
+ BUG();
+ return NULL;
+ }
+
+ memset(isi, 0, sizeof(struct iosapic_info));
+
+ isi->addr = ioremap(hpa, 4096);
+ isi->isi_hpa = hpa;
+ isi->isi_version = iosapic_rd_version(isi);
+ isi->isi_num_vectors = IOSAPIC_IRDT_MAX_ENTRY(isi->isi_version) + 1;
+
+ vip = isi->isi_vector = (struct vector_info *)
+ kmalloc(sizeof(struct vector_info) * isi->isi_num_vectors, GFP_KERNEL);
+ if (vip == NULL) {
+ kfree(isi);
+ return NULL;
+ }
+
+ memset(vip, 0, sizeof(struct vector_info) * isi->isi_num_vectors);
+
+ for (cnt=0; cnt < isi->isi_num_vectors; cnt++, vip++) {
+ vip->irqline = (unsigned char) cnt;
+ vip->iosapic = isi;
+ }
+ return isi;
+}
+
+
+#ifdef DEBUG_IOSAPIC
+
+static void
+iosapic_prt_irt(void *irt, long num_entry)
+{
+ unsigned int i, *irp = (unsigned int *) irt;
+
+
+ printk(KERN_DEBUG MODULE_NAME ": Interrupt Routing Table (%lx entries)\n", num_entry);
+
+ for (i=0; i<num_entry; i++, irp += 4) {
+ printk(KERN_DEBUG "%p : %2d %.8x %.8x %.8x %.8x\n",
+ irp, i, irp[0], irp[1], irp[2], irp[3]);
+ }
+}
+
+
+static void
+iosapic_prt_vi(struct vector_info *vi)
+{
+ printk(KERN_DEBUG MODULE_NAME ": vector_info[%d] is at %p\n", vi->irqline, vi);
+ printk(KERN_DEBUG "\t\tstatus: %.4x\n", vi->status);
+ printk(KERN_DEBUG "\t\ttxn_irq: %d\n", vi->txn_irq);
+ printk(KERN_DEBUG "\t\ttxn_addr: %lx\n", vi->txn_addr);
+ printk(KERN_DEBUG "\t\ttxn_data: %lx\n", vi->txn_data);
+ printk(KERN_DEBUG "\t\teoi_addr: %p\n", vi->eoi_addr);
+ printk(KERN_DEBUG "\t\teoi_data: %x\n", vi->eoi_data);
+}
+
+
+static void
+iosapic_prt_isi(struct iosapic_info *isi)
+{
+ printk(KERN_DEBUG MODULE_NAME ": io_sapic_info at %p\n", isi);
+ printk(KERN_DEBUG "\t\tisi_hpa: %lx\n", isi->isi_hpa);
+ printk(KERN_DEBUG "\t\tisi_status: %x\n", isi->isi_status);
+ printk(KERN_DEBUG "\t\tisi_version: %x\n", isi->isi_version);
+ printk(KERN_DEBUG "\t\tisi_vector: %p\n", isi->isi_vector);
+}
+#endif /* DEBUG_IOSAPIC */
diff --git a/drivers/parisc/iosapic_private.h b/drivers/parisc/iosapic_private.h
new file mode 100644
index 000000000000..41e7ec2a44aa
--- /dev/null
+++ b/drivers/parisc/iosapic_private.h
@@ -0,0 +1,188 @@
+/*
+ * Private structs/constants for PARISC IOSAPIC support
+ *
+ * Copyright (C) 2000 Hewlett Packard (Grant Grundler)
+ * Copyright (C) 2000,2003 Grant Grundler (grundler at parisc-linux.org)
+ * Copyright (C) 2002 Matthew Wilcox (willy at parisc-linux.org)
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+/*
+** This file is private to iosapic driver.
+** If stuff needs to be used by another driver, move it to a common file.
+**
+** WARNING: fields most data structures here are ordered to make sure
+** they pack nicely for 64-bit compilation. (ie sizeof(long) == 8)
+*/
+
+
+/*
+** Interrupt Routing Stuff
+** -----------------------
+** The interrupt routing table consists of entries derived from
+** MP Specification Draft 1.5. There is one interrupt routing
+** table per cell. N- and L-class consist of a single cell.
+*/
+struct irt_entry {
+
+ /* Entry Type 139 identifies an I/O SAPIC interrupt entry */
+ u8 entry_type;
+
+ /* Entry Length 16 indicates entry is 16 bytes long */
+ u8 entry_length;
+
+ /*
+ ** Interrupt Type of 0 indicates a vectored interrupt,
+ ** all other values are reserved
+ */
+ u8 interrupt_type;
+
+ /*
+ ** PO and EL
+ ** Polarity of SAPIC I/O input signals:
+ ** 00 = Reserved
+ ** 01 = Active high
+ ** 10 = Reserved
+ ** 11 = Active low
+ ** Trigger mode of SAPIC I/O input signals:
+ ** 00 = Reserved
+ ** 01 = Edge-triggered
+ ** 10 = Reserved
+ ** 11 = Level-triggered
+ */
+ u8 polarity_trigger;
+
+ /*
+ ** IRQ and DEVNO
+ ** irq identifies PCI interrupt signal where
+ ** 0x0 corresponds to INT_A#,
+ ** 0x1 corresponds to INT_B#,
+ ** 0x2 corresponds to INT_C#
+ ** 0x3 corresponds to INT_D#
+ ** PCI device number where interrupt originates
+ */
+ u8 src_bus_irq_devno;
+
+ /* Source Bus ID identifies the bus where interrupt signal comes from */
+ u8 src_bus_id;
+
+ /*
+ ** Segment ID is unique across a protection domain and
+ ** identifies a segment of PCI buses (reserved in
+ ** MP Specification Draft 1.5)
+ */
+ u8 src_seg_id;
+
+ /*
+ ** Destination I/O SAPIC INTIN# identifies the INTIN n pin
+ ** to which the signal is connected
+ */
+ u8 dest_iosapic_intin;
+
+ /*
+ ** Destination I/O SAPIC Address identifies the I/O SAPIC
+ ** to which the signal is connected
+ */
+ u64 dest_iosapic_addr;
+};
+
+#define IRT_IOSAPIC_TYPE 139
+#define IRT_IOSAPIC_LENGTH 16
+
+#define IRT_VECTORED_INTR 0
+
+#define IRT_PO_MASK 0x3
+#define IRT_ACTIVE_HI 1
+#define IRT_ACTIVE_LO 3
+
+#define IRT_EL_MASK 0x3
+#define IRT_EL_SHIFT 2
+#define IRT_EDGE_TRIG 1
+#define IRT_LEVEL_TRIG 3
+
+#define IRT_IRQ_MASK 0x3
+#define IRT_DEV_MASK 0x1f
+#define IRT_DEV_SHIFT 2
+
+#define IRT_IRQ_DEVNO_MASK ((IRT_DEV_MASK << IRT_DEV_SHIFT) | IRT_IRQ_MASK)
+
+#ifdef SUPPORT_MULTI_CELL
+struct iosapic_irt {
+ struct iosapic_irt *irt_next; /* next routing table */
+ struct irt_entry *irt_base; /* intr routing table address */
+ size_t irte_count; /* number of entries in the table */
+ size_t irte_size; /* size (bytes) of each entry */
+};
+#endif
+
+struct vector_info {
+ struct iosapic_info *iosapic; /* I/O SAPIC this vector is on */
+ struct irt_entry *irte; /* IRT entry */
+ u32 *eoi_addr; /* precalculate EOI reg address */
+ u32 eoi_data; /* IA64: ? PA: swapped txn_data */
+ int txn_irq; /* virtual IRQ number for processor */
+ ulong txn_addr; /* IA64: id_eid PA: partial HPA */
+ u32 txn_data; /* CPU interrupt bit */
+ u8 status; /* status/flags */
+ u8 irqline; /* INTINn(IRQ) */
+};
+
+
+struct iosapic_info {
+ struct iosapic_info * isi_next; /* list of I/O SAPIC */
+ void __iomem * addr; /* remapped address */
+ unsigned long isi_hpa; /* physical base address */
+ struct vector_info * isi_vector; /* IRdT (IRQ line) array */
+ int isi_num_vectors; /* size of IRdT array */
+ int isi_status; /* status/flags */
+ unsigned int isi_version; /* DEBUG: data fr version reg */
+};
+
+
+
+#ifdef __IA64__
+/*
+** PA risc does NOT have any local sapics. IA64 does.
+** PIB (Processor Interrupt Block) is handled by Astro or Dew (Stretch CEC).
+**
+** PA: Get id_eid from IRT and hardcode PIB to 0xfeeNNNN0
+** Emulate the data on PAT platforms.
+*/
+struct local_sapic_info {
+ struct local_sapic_info *lsi_next; /* point to next CPU info */
+ int *lsi_cpu_id; /* point to logical CPU id */
+ unsigned long *lsi_id_eid; /* point to IA-64 CPU id */
+ int *lsi_status; /* point to CPU status */
+ void *lsi_private; /* point to special info */
+};
+
+/*
+** "root" data structure which ties everything together.
+** Should always be able to start with sapic_root and locate
+** the desired information.
+*/
+struct sapic_info {
+ struct sapic_info *si_next; /* info is per cell */
+ int si_cellid; /* cell id */
+ unsigned int si_status; /* status */
+ char *si_pib_base; /* intr blk base address */
+ local_sapic_info_t *si_local_info;
+ io_sapic_info_t *si_io_info;
+ extint_info_t *si_extint_info;/* External Intr info */
+};
+#endif
+
diff --git a/drivers/parisc/lasi.c b/drivers/parisc/lasi.c
new file mode 100644
index 000000000000..731855053392
--- /dev/null
+++ b/drivers/parisc/lasi.c
@@ -0,0 +1,240 @@
+/*
+ * LASI Device Driver
+ *
+ * (c) Copyright 1999 Red Hat Software
+ * Portions (c) Copyright 1999 The Puffin Group Inc.
+ * Portions (c) Copyright 1999 Hewlett-Packard
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * by Alan Cox <alan@redhat.com> and
+ * Alex deVries <alex@onefishtwo.ca>
+ */
+
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/pm.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#include <asm/io.h>
+#include <asm/hardware.h>
+#include <asm/led.h>
+
+#include "gsc.h"
+
+
+#define LASI_VER 0xC008 /* LASI Version */
+
+#define LASI_IO_CONF 0x7FFFE /* LASI primary configuration register */
+#define LASI_IO_CONF2 0x7FFFF /* LASI secondary configuration register */
+
+static void lasi_choose_irq(struct parisc_device *dev, void *ctrl)
+{
+ int irq;
+
+ switch (dev->id.sversion) {
+ case 0x74: irq = 7; break; /* Centronics */
+ case 0x7B: irq = 13; break; /* Audio */
+ case 0x81: irq = 14; break; /* Lasi itself */
+ case 0x82: irq = 9; break; /* SCSI */
+ case 0x83: irq = 20; break; /* Floppy */
+ case 0x84: irq = 26; break; /* PS/2 Keyboard */
+ case 0x87: irq = 18; break; /* ISDN */
+ case 0x8A: irq = 8; break; /* LAN */
+ case 0x8C: irq = 5; break; /* RS232 */
+ case 0x8D: irq = (dev->hw_path == 13) ? 16 : 17; break;
+ /* Telephone */
+ default: return; /* unknown */
+ }
+
+ gsc_asic_assign_irq(ctrl, irq, &dev->irq);
+}
+
+static void __init
+lasi_init_irq(struct gsc_asic *this_lasi)
+{
+ unsigned long lasi_base = this_lasi->hpa;
+
+ /* Stop LASI barking for a bit */
+ gsc_writel(0x00000000, lasi_base+OFFSET_IMR);
+
+ /* clear pending interrupts */
+ gsc_readl(lasi_base+OFFSET_IRR);
+
+ /* We're not really convinced we want to reset the onboard
+ * devices. Firmware does it for us...
+ */
+
+ /* Resets */
+ /* gsc_writel(0xFFFFFFFF, lasi_base+0x2000);*/ /* Parallel */
+ if(pdc_add_valid(lasi_base+0x4004) == PDC_OK)
+ gsc_writel(0xFFFFFFFF, lasi_base+0x4004); /* Audio */
+ /* gsc_writel(0xFFFFFFFF, lasi_base+0x5000);*/ /* Serial */
+ /* gsc_writel(0xFFFFFFFF, lasi_base+0x6000);*/ /* SCSI */
+ gsc_writel(0xFFFFFFFF, lasi_base+0x7000); /* LAN */
+ gsc_writel(0xFFFFFFFF, lasi_base+0x8000); /* Keyboard */
+ gsc_writel(0xFFFFFFFF, lasi_base+0xA000); /* FDC */
+
+ /* Ok we hit it on the head with a hammer, our Dog is now
+ ** comatose and muzzled. Devices will now unmask LASI
+ ** interrupts as they are registered as irq's in the LASI range.
+ */
+ /* XXX: I thought it was `awks that got `it on the `ead with an
+ * `ammer. -- willy
+ */
+}
+
+
+/*
+ ** lasi_led_init()
+ **
+ ** lasi_led_init() initializes the LED controller on the LASI.
+ **
+ ** Since Mirage and Electra machines use a different LED
+ ** address register, we need to check for these machines
+ ** explicitly.
+ */
+
+#ifndef CONFIG_CHASSIS_LCD_LED
+
+#define lasi_led_init(x) /* nothing */
+
+#else
+
+void __init lasi_led_init(unsigned long lasi_hpa)
+{
+ unsigned long datareg;
+
+ switch (CPU_HVERSION) {
+ /* Gecko machines have only one single LED, which can be permanently
+ turned on by writing a zero into the power control register. */
+ case 0x600: /* Gecko (712/60) */
+ case 0x601: /* Gecko (712/80) */
+ case 0x602: /* Gecko (712/100) */
+ case 0x603: /* Anole 64 (743/64) */
+ case 0x604: /* Anole 100 (743/100) */
+ case 0x605: /* Gecko (712/120) */
+ datareg = lasi_hpa + 0x0000C000;
+ gsc_writeb(0, datareg);
+ return; /* no need to register the LED interrupt-function */
+
+ /* Mirage and Electra machines need special offsets */
+ case 0x60A: /* Mirage Jr (715/64) */
+ case 0x60B: /* Mirage 100 */
+ case 0x60C: /* Mirage 100+ */
+ case 0x60D: /* Electra 100 */
+ case 0x60E: /* Electra 120 */
+ datareg = lasi_hpa - 0x00020000;
+ break;
+
+ default:
+ datareg = lasi_hpa + 0x0000C000;
+ break;
+ }
+
+ register_led_driver(DISPLAY_MODEL_LASI, LED_CMD_REG_NONE, datareg);
+}
+#endif
+
+/*
+ * lasi_power_off
+ *
+ * Function for lasi to turn off the power. This is accomplished by setting a
+ * 1 to PWR_ON_L in the Power Control Register
+ *
+ */
+
+static unsigned long lasi_power_off_hpa;
+
+static void lasi_power_off(void)
+{
+ unsigned long datareg;
+
+ /* calculate addr of the Power Control Register */
+ datareg = lasi_power_off_hpa + 0x0000C000;
+
+ /* Power down the machine */
+ gsc_writel(0x02, datareg);
+}
+
+int __init
+lasi_init_chip(struct parisc_device *dev)
+{
+ struct gsc_asic *lasi;
+ struct gsc_irq gsc_irq;
+ int ret;
+
+ lasi = kmalloc(sizeof(*lasi), GFP_KERNEL);
+ if (!lasi)
+ return -ENOMEM;
+
+ lasi->name = "Lasi";
+ lasi->hpa = dev->hpa;
+
+ /* Check the 4-bit (yes, only 4) version register */
+ lasi->version = gsc_readl(lasi->hpa + LASI_VER) & 0xf;
+ printk(KERN_INFO "%s version %d at 0x%lx found.\n",
+ lasi->name, lasi->version, lasi->hpa);
+
+ /* initialize the chassis LEDs really early */
+ lasi_led_init(lasi->hpa);
+
+ /* Stop LASI barking for a bit */
+ lasi_init_irq(lasi);
+
+ /* the IRQ lasi should use */
+ dev->irq = gsc_alloc_irq(&gsc_irq);
+ if (dev->irq < 0) {
+ printk(KERN_ERR "%s(): cannot get GSC irq\n",
+ __FUNCTION__);
+ kfree(lasi);
+ return -EBUSY;
+ }
+
+ lasi->eim = ((u32) gsc_irq.txn_addr) | gsc_irq.txn_data;
+
+ ret = request_irq(gsc_irq.irq, gsc_asic_intr, 0, "lasi", lasi);
+ if (ret < 0) {
+ kfree(lasi);
+ return ret;
+ }
+
+ /* enable IRQ's for devices below LASI */
+ gsc_writel(lasi->eim, lasi->hpa + OFFSET_IAR);
+
+ /* Done init'ing, register this driver */
+ ret = gsc_common_setup(dev, lasi);
+ if (ret) {
+ kfree(lasi);
+ return ret;
+ }
+
+ gsc_fixup_irqs(dev, lasi, lasi_choose_irq);
+
+ /* initialize the power off function */
+ /* FIXME: Record the LASI HPA for the power off function. This should
+ * ensure that only the first LASI (the one controlling the power off)
+ * should set the HPA here */
+ lasi_power_off_hpa = lasi->hpa;
+ pm_power_off = lasi_power_off;
+
+ return ret;
+}
+
+static struct parisc_device_id lasi_tbl[] = {
+ { HPHW_BA, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00081 },
+ { 0, }
+};
+
+struct parisc_driver lasi_driver = {
+ .name = "Lasi",
+ .id_table = lasi_tbl,
+ .probe = lasi_init_chip,
+};
diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c
new file mode 100644
index 000000000000..dc838804c0dd
--- /dev/null
+++ b/drivers/parisc/lba_pci.c
@@ -0,0 +1,1649 @@
+/*
+**
+** PCI Lower Bus Adapter (LBA) manager
+**
+** (c) Copyright 1999,2000 Grant Grundler
+** (c) Copyright 1999,2000 Hewlett-Packard Company
+**
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License as published by
+** the Free Software Foundation; either version 2 of the License, or
+** (at your option) any later version.
+**
+**
+** This module primarily provides access to PCI bus (config/IOport
+** spaces) on platforms with an SBA/LBA chipset. A/B/C/J/L/N-class
+** with 4 digit model numbers - eg C3000 (and A400...sigh).
+**
+** LBA driver isn't as simple as the Dino driver because:
+** (a) this chip has substantial bug fixes between revisions
+** (Only one Dino bug has a software workaround :^( )
+** (b) has more options which we don't (yet) support (DMA hints, OLARD)
+** (c) IRQ support lives in the I/O SAPIC driver (not with PCI driver)
+** (d) play nicely with both PAT and "Legacy" PA-RISC firmware (PDC).
+** (dino only deals with "Legacy" PDC)
+**
+** LBA driver passes the I/O SAPIC HPA to the I/O SAPIC driver.
+** (I/O SAPIC is integratd in the LBA chip).
+**
+** FIXME: Add support to SBA and LBA drivers for DMA hint sets
+** FIXME: Add support for PCI card hot-plug (OLARD).
+*/
+
+#include <linux/delay.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/spinlock.h>
+#include <linux/init.h> /* for __init and __devinit */
+#include <linux/pci.h>
+#include <linux/ioport.h>
+#include <linux/slab.h>
+#include <linux/smp_lock.h>
+
+#include <asm/byteorder.h>
+#include <asm/pdc.h>
+#include <asm/pdcpat.h>
+#include <asm/page.h>
+#include <asm/system.h>
+
+#include <asm/hardware.h> /* for register_parisc_driver() stuff */
+#include <asm/parisc-device.h>
+#include <asm/iosapic.h> /* for iosapic_register() */
+#include <asm/io.h> /* read/write stuff */
+
+#undef DEBUG_LBA /* general stuff */
+#undef DEBUG_LBA_PORT /* debug I/O Port access */
+#undef DEBUG_LBA_CFG /* debug Config Space Access (ie PCI Bus walk) */
+#undef DEBUG_LBA_PAT /* debug PCI Resource Mgt code - PDC PAT only */
+
+#undef FBB_SUPPORT /* Fast Back-Back xfers - NOT READY YET */
+
+
+#ifdef DEBUG_LBA
+#define DBG(x...) printk(x)
+#else
+#define DBG(x...)
+#endif
+
+#ifdef DEBUG_LBA_PORT
+#define DBG_PORT(x...) printk(x)
+#else
+#define DBG_PORT(x...)
+#endif
+
+#ifdef DEBUG_LBA_CFG
+#define DBG_CFG(x...) printk(x)
+#else
+#define DBG_CFG(x...)
+#endif
+
+#ifdef DEBUG_LBA_PAT
+#define DBG_PAT(x...) printk(x)
+#else
+#define DBG_PAT(x...)
+#endif
+
+
+/*
+** Config accessor functions only pass in the 8-bit bus number and not
+** the 8-bit "PCI Segment" number. Each LBA will be assigned a PCI bus
+** number based on what firmware wrote into the scratch register.
+**
+** The "secondary" bus number is set to this before calling
+** pci_register_ops(). If any PPB's are present, the scan will
+** discover them and update the "secondary" and "subordinate"
+** fields in the pci_bus structure.
+**
+** Changes in the configuration *may* result in a different
+** bus number for each LBA depending on what firmware does.
+*/
+
+#define MODULE_NAME "LBA"
+
+#define LBA_FUNC_ID 0x0000 /* function id */
+#define LBA_FCLASS 0x0008 /* function class, bist, header, rev... */
+#define LBA_CAPABLE 0x0030 /* capabilities register */
+
+#define LBA_PCI_CFG_ADDR 0x0040 /* poke CFG address here */
+#define LBA_PCI_CFG_DATA 0x0048 /* read or write data here */
+
+#define LBA_PMC_MTLT 0x0050 /* Firmware sets this - read only. */
+#define LBA_FW_SCRATCH 0x0058 /* Firmware writes the PCI bus number here. */
+#define LBA_ERROR_ADDR 0x0070 /* On error, address gets logged here */
+
+#define LBA_ARB_MASK 0x0080 /* bit 0 enable arbitration. PAT/PDC enables */
+#define LBA_ARB_PRI 0x0088 /* firmware sets this. */
+#define LBA_ARB_MODE 0x0090 /* firmware sets this. */
+#define LBA_ARB_MTLT 0x0098 /* firmware sets this. */
+
+#define LBA_MOD_ID 0x0100 /* Module ID. PDC_PAT_CELL reports 4 */
+
+#define LBA_STAT_CTL 0x0108 /* Status & Control */
+#define LBA_BUS_RESET 0x01 /* Deassert PCI Bus Reset Signal */
+#define CLEAR_ERRLOG 0x10 /* "Clear Error Log" cmd */
+#define CLEAR_ERRLOG_ENABLE 0x20 /* "Clear Error Log" Enable */
+#define HF_ENABLE 0x40 /* enable HF mode (default is -1 mode) */
+
+#define LBA_LMMIO_BASE 0x0200 /* < 4GB I/O address range */
+#define LBA_LMMIO_MASK 0x0208
+
+#define LBA_GMMIO_BASE 0x0210 /* > 4GB I/O address range */
+#define LBA_GMMIO_MASK 0x0218
+
+#define LBA_WLMMIO_BASE 0x0220 /* All < 4GB ranges under the same *SBA* */
+#define LBA_WLMMIO_MASK 0x0228
+
+#define LBA_WGMMIO_BASE 0x0230 /* All > 4GB ranges under the same *SBA* */
+#define LBA_WGMMIO_MASK 0x0238
+
+#define LBA_IOS_BASE 0x0240 /* I/O port space for this LBA */
+#define LBA_IOS_MASK 0x0248
+
+#define LBA_ELMMIO_BASE 0x0250 /* Extra LMMIO range */
+#define LBA_ELMMIO_MASK 0x0258
+
+#define LBA_EIOS_BASE 0x0260 /* Extra I/O port space */
+#define LBA_EIOS_MASK 0x0268
+
+#define LBA_GLOBAL_MASK 0x0270 /* Mercury only: Global Address Mask */
+#define LBA_DMA_CTL 0x0278 /* firmware sets this */
+
+#define LBA_IBASE 0x0300 /* SBA DMA support */
+#define LBA_IMASK 0x0308
+
+/* FIXME: ignore DMA Hint stuff until we can measure performance */
+#define LBA_HINT_CFG 0x0310
+#define LBA_HINT_BASE 0x0380 /* 14 registers at every 8 bytes. */
+
+#define LBA_BUS_MODE 0x0620
+
+/* ERROR regs are needed for config cycle kluges */
+#define LBA_ERROR_CONFIG 0x0680
+#define LBA_SMART_MODE 0x20
+#define LBA_ERROR_STATUS 0x0688
+#define LBA_ROPE_CTL 0x06A0
+
+#define LBA_IOSAPIC_BASE 0x800 /* Offset of IRQ logic */
+
+/* non-postable I/O port space, densely packed */
+#define LBA_PORT_BASE (PCI_F_EXTEND | 0xfee00000UL)
+static void __iomem *astro_iop_base;
+
+#define ELROY_HVERS 0x782
+#define MERCURY_HVERS 0x783
+#define QUICKSILVER_HVERS 0x784
+
+static inline int IS_ELROY(struct parisc_device *d)
+{
+ return (d->id.hversion == ELROY_HVERS);
+}
+
+static inline int IS_MERCURY(struct parisc_device *d)
+{
+ return (d->id.hversion == MERCURY_HVERS);
+}
+
+static inline int IS_QUICKSILVER(struct parisc_device *d)
+{
+ return (d->id.hversion == QUICKSILVER_HVERS);
+}
+
+
+/*
+** lba_device: Per instance Elroy data structure
+*/
+struct lba_device {
+ struct pci_hba_data hba;
+
+ spinlock_t lba_lock;
+ void *iosapic_obj;
+
+#ifdef CONFIG_64BIT
+ void __iomem * iop_base; /* PA_VIEW - for IO port accessor funcs */
+#endif
+
+ int flags; /* state/functionality enabled */
+ int hw_rev; /* HW revision of chip */
+};
+
+
+static u32 lba_t32;
+
+/* lba flags */
+#define LBA_FLAG_SKIP_PROBE 0x10
+
+#define LBA_SKIP_PROBE(d) ((d)->flags & LBA_FLAG_SKIP_PROBE)
+
+
+/* Looks nice and keeps the compiler happy */
+#define LBA_DEV(d) ((struct lba_device *) (d))
+
+
+/*
+** Only allow 8 subsidiary busses per LBA
+** Problem is the PCI bus numbering is globally shared.
+*/
+#define LBA_MAX_NUM_BUSES 8
+
+/************************************
+ * LBA register read and write support
+ *
+ * BE WARNED: register writes are posted.
+ * (ie follow writes which must reach HW with a read)
+ */
+#define READ_U8(addr) __raw_readb(addr)
+#define READ_U16(addr) __raw_readw(addr)
+#define READ_U32(addr) __raw_readl(addr)
+#define WRITE_U8(value, addr) __raw_writeb(value, addr)
+#define WRITE_U16(value, addr) __raw_writew(value, addr)
+#define WRITE_U32(value, addr) __raw_writel(value, addr)
+
+#define READ_REG8(addr) readb(addr)
+#define READ_REG16(addr) readw(addr)
+#define READ_REG32(addr) readl(addr)
+#define READ_REG64(addr) readq(addr)
+#define WRITE_REG8(value, addr) writeb(value, addr)
+#define WRITE_REG16(value, addr) writew(value, addr)
+#define WRITE_REG32(value, addr) writel(value, addr)
+
+
+#define LBA_CFG_TOK(bus,dfn) ((u32) ((bus)<<16 | (dfn)<<8))
+#define LBA_CFG_BUS(tok) ((u8) ((tok)>>16))
+#define LBA_CFG_DEV(tok) ((u8) ((tok)>>11) & 0x1f)
+#define LBA_CFG_FUNC(tok) ((u8) ((tok)>>8 ) & 0x7)
+
+
+/*
+** Extract LBA (Rope) number from HPA
+** REVISIT: 16 ropes for Stretch/Ike?
+*/
+#define ROPES_PER_IOC 8
+#define LBA_NUM(x) ((((unsigned long) x) >> 13) & (ROPES_PER_IOC-1))
+
+
+static void
+lba_dump_res(struct resource *r, int d)
+{
+ int i;
+
+ if (NULL == r)
+ return;
+
+ printk(KERN_DEBUG "(%p)", r->parent);
+ for (i = d; i ; --i) printk(" ");
+ printk(KERN_DEBUG "%p [%lx,%lx]/%lx\n", r, r->start, r->end, r->flags);
+ lba_dump_res(r->child, d+2);
+ lba_dump_res(r->sibling, d);
+}
+
+
+/*
+** LBA rev 2.0, 2.1, 2.2, and 3.0 bus walks require a complex
+** workaround for cfg cycles:
+** -- preserve LBA state
+** -- prevent any DMA from occurring
+** -- turn on smart mode
+** -- probe with config writes before doing config reads
+** -- check ERROR_STATUS
+** -- clear ERROR_STATUS
+** -- restore LBA state
+**
+** The workaround is only used for device discovery.
+*/
+
+static int lba_device_present(u8 bus, u8 dfn, struct lba_device *d)
+{
+ u8 first_bus = d->hba.hba_bus->secondary;
+ u8 last_sub_bus = d->hba.hba_bus->subordinate;
+
+ if ((bus < first_bus) ||
+ (bus > last_sub_bus) ||
+ ((bus - first_bus) >= LBA_MAX_NUM_BUSES)) {
+ return 0;
+ }
+
+ return 1;
+}
+
+
+
+#define LBA_CFG_SETUP(d, tok) { \
+ /* Save contents of error config register. */ \
+ error_config = READ_REG32(d->hba.base_addr + LBA_ERROR_CONFIG); \
+\
+ /* Save contents of status control register. */ \
+ status_control = READ_REG32(d->hba.base_addr + LBA_STAT_CTL); \
+\
+ /* For LBA rev 2.0, 2.1, 2.2, and 3.0, we must disable DMA \
+ ** arbitration for full bus walks. \
+ */ \
+ /* Save contents of arb mask register. */ \
+ arb_mask = READ_REG32(d->hba.base_addr + LBA_ARB_MASK); \
+\
+ /* \
+ * Turn off all device arbitration bits (i.e. everything \
+ * except arbitration enable bit). \
+ */ \
+ WRITE_REG32(0x1, d->hba.base_addr + LBA_ARB_MASK); \
+\
+ /* \
+ * Set the smart mode bit so that master aborts don't cause \
+ * LBA to go into PCI fatal mode (required). \
+ */ \
+ WRITE_REG32(error_config | LBA_SMART_MODE, d->hba.base_addr + LBA_ERROR_CONFIG); \
+}
+
+
+#define LBA_CFG_PROBE(d, tok) { \
+ /* \
+ * Setup Vendor ID write and read back the address register \
+ * to make sure that LBA is the bus master. \
+ */ \
+ WRITE_REG32(tok | PCI_VENDOR_ID, (d)->hba.base_addr + LBA_PCI_CFG_ADDR);\
+ /* \
+ * Read address register to ensure that LBA is the bus master, \
+ * which implies that DMA traffic has stopped when DMA arb is off. \
+ */ \
+ lba_t32 = READ_REG32((d)->hba.base_addr + LBA_PCI_CFG_ADDR); \
+ /* \
+ * Generate a cfg write cycle (will have no affect on \
+ * Vendor ID register since read-only). \
+ */ \
+ WRITE_REG32(~0, (d)->hba.base_addr + LBA_PCI_CFG_DATA); \
+ /* \
+ * Make sure write has completed before proceeding further, \
+ * i.e. before setting clear enable. \
+ */ \
+ lba_t32 = READ_REG32((d)->hba.base_addr + LBA_PCI_CFG_ADDR); \
+}
+
+
+/*
+ * HPREVISIT:
+ * -- Can't tell if config cycle got the error.
+ *
+ * OV bit is broken until rev 4.0, so can't use OV bit and
+ * LBA_ERROR_LOG_ADDR to tell if error belongs to config cycle.
+ *
+ * As of rev 4.0, no longer need the error check.
+ *
+ * -- Even if we could tell, we still want to return -1
+ * for **ANY** error (not just master abort).
+ *
+ * -- Only clear non-fatal errors (we don't want to bring
+ * LBA out of pci-fatal mode).
+ *
+ * Actually, there is still a race in which
+ * we could be clearing a fatal error. We will
+ * live with this during our initial bus walk
+ * until rev 4.0 (no driver activity during
+ * initial bus walk). The initial bus walk
+ * has race conditions concerning the use of
+ * smart mode as well.
+ */
+
+#define LBA_MASTER_ABORT_ERROR 0xc
+#define LBA_FATAL_ERROR 0x10
+
+#define LBA_CFG_MASTER_ABORT_CHECK(d, base, tok, error) { \
+ u32 error_status = 0; \
+ /* \
+ * Set clear enable (CE) bit. Unset by HW when new \
+ * errors are logged -- LBA HW ERS section 14.3.3). \
+ */ \
+ WRITE_REG32(status_control | CLEAR_ERRLOG_ENABLE, base + LBA_STAT_CTL); \
+ error_status = READ_REG32(base + LBA_ERROR_STATUS); \
+ if ((error_status & 0x1f) != 0) { \
+ /* \
+ * Fail the config read request. \
+ */ \
+ error = 1; \
+ if ((error_status & LBA_FATAL_ERROR) == 0) { \
+ /* \
+ * Clear error status (if fatal bit not set) by setting \
+ * clear error log bit (CL). \
+ */ \
+ WRITE_REG32(status_control | CLEAR_ERRLOG, base + LBA_STAT_CTL); \
+ } \
+ } \
+}
+
+#define LBA_CFG_TR4_ADDR_SETUP(d, addr) \
+ WRITE_REG32(((addr) & ~3), (d)->hba.base_addr + LBA_PCI_CFG_ADDR);
+
+#define LBA_CFG_ADDR_SETUP(d, addr) { \
+ WRITE_REG32(((addr) & ~3), (d)->hba.base_addr + LBA_PCI_CFG_ADDR); \
+ /* \
+ * Read address register to ensure that LBA is the bus master, \
+ * which implies that DMA traffic has stopped when DMA arb is off. \
+ */ \
+ lba_t32 = READ_REG32((d)->hba.base_addr + LBA_PCI_CFG_ADDR); \
+}
+
+
+#define LBA_CFG_RESTORE(d, base) { \
+ /* \
+ * Restore status control register (turn off clear enable). \
+ */ \
+ WRITE_REG32(status_control, base + LBA_STAT_CTL); \
+ /* \
+ * Restore error config register (turn off smart mode). \
+ */ \
+ WRITE_REG32(error_config, base + LBA_ERROR_CONFIG); \
+ /* \
+ * Restore arb mask register (reenables DMA arbitration). \
+ */ \
+ WRITE_REG32(arb_mask, base + LBA_ARB_MASK); \
+}
+
+
+
+static unsigned int
+lba_rd_cfg(struct lba_device *d, u32 tok, u8 reg, u32 size)
+{
+ u32 data = ~0U;
+ int error = 0;
+ u32 arb_mask = 0; /* used by LBA_CFG_SETUP/RESTORE */
+ u32 error_config = 0; /* used by LBA_CFG_SETUP/RESTORE */
+ u32 status_control = 0; /* used by LBA_CFG_SETUP/RESTORE */
+
+ LBA_CFG_SETUP(d, tok);
+ LBA_CFG_PROBE(d, tok);
+ LBA_CFG_MASTER_ABORT_CHECK(d, d->hba.base_addr, tok, error);
+ if (!error) {
+ void __iomem *data_reg = d->hba.base_addr + LBA_PCI_CFG_DATA;
+
+ LBA_CFG_ADDR_SETUP(d, tok | reg);
+ switch (size) {
+ case 1: data = (u32) READ_REG8(data_reg + (reg & 3)); break;
+ case 2: data = (u32) READ_REG16(data_reg+ (reg & 2)); break;
+ case 4: data = READ_REG32(data_reg); break;
+ }
+ }
+ LBA_CFG_RESTORE(d, d->hba.base_addr);
+ return(data);
+}
+
+
+static int elroy_cfg_read(struct pci_bus *bus, unsigned int devfn, int pos, int size, u32 *data)
+{
+ struct lba_device *d = LBA_DEV(parisc_walk_tree(bus->bridge));
+ u32 local_bus = (bus->parent == NULL) ? 0 : bus->secondary;
+ u32 tok = LBA_CFG_TOK(local_bus, devfn);
+ void __iomem *data_reg = d->hba.base_addr + LBA_PCI_CFG_DATA;
+
+ if ((pos > 255) || (devfn > 255))
+ return -EINVAL;
+
+/* FIXME: B2K/C3600 workaround is always use old method... */
+ /* if (!LBA_SKIP_PROBE(d)) */ {
+ /* original - Generate config cycle on broken elroy
+ with risk we will miss PCI bus errors. */
+ *data = lba_rd_cfg(d, tok, pos, size);
+ DBG_CFG("%s(%x+%2x) -> 0x%x (a)\n", __FUNCTION__, tok, pos, *data);
+ return 0;
+ }
+
+ if (LBA_SKIP_PROBE(d) && !lba_device_present(bus->secondary, devfn, d)) {
+ DBG_CFG("%s(%x+%2x) -> -1 (b)\n", __FUNCTION__, tok, pos);
+ /* either don't want to look or know device isn't present. */
+ *data = ~0U;
+ return(0);
+ }
+
+ /* Basic Algorithm
+ ** Should only get here on fully working LBA rev.
+ ** This is how simple the code should have been.
+ */
+ LBA_CFG_ADDR_SETUP(d, tok | pos);
+ switch(size) {
+ case 1: *data = READ_REG8 (data_reg + (pos & 3)); break;
+ case 2: *data = READ_REG16(data_reg + (pos & 2)); break;
+ case 4: *data = READ_REG32(data_reg); break;
+ }
+ DBG_CFG("%s(%x+%2x) -> 0x%x (c)\n", __FUNCTION__, tok, pos, *data);
+ return 0;
+}
+
+
+static void
+lba_wr_cfg(struct lba_device *d, u32 tok, u8 reg, u32 data, u32 size)
+{
+ int error = 0;
+ u32 arb_mask = 0;
+ u32 error_config = 0;
+ u32 status_control = 0;
+ void __iomem *data_reg = d->hba.base_addr + LBA_PCI_CFG_DATA;
+
+ LBA_CFG_SETUP(d, tok);
+ LBA_CFG_ADDR_SETUP(d, tok | reg);
+ switch (size) {
+ case 1: WRITE_REG8 (data, data_reg + (reg & 3)); break;
+ case 2: WRITE_REG16(data, data_reg + (reg & 2)); break;
+ case 4: WRITE_REG32(data, data_reg); break;
+ }
+ LBA_CFG_MASTER_ABORT_CHECK(d, d->hba.base_addr, tok, error);
+ LBA_CFG_RESTORE(d, d->hba.base_addr);
+}
+
+
+/*
+ * LBA 4.0 config write code implements non-postable semantics
+ * by doing a read of CONFIG ADDR after the write.
+ */
+
+static int elroy_cfg_write(struct pci_bus *bus, unsigned int devfn, int pos, int size, u32 data)
+{
+ struct lba_device *d = LBA_DEV(parisc_walk_tree(bus->bridge));
+ u32 local_bus = (bus->parent == NULL) ? 0 : bus->secondary;
+ u32 tok = LBA_CFG_TOK(local_bus,devfn);
+
+ if ((pos > 255) || (devfn > 255))
+ return -EINVAL;
+
+ if (!LBA_SKIP_PROBE(d)) {
+ /* Original Workaround */
+ lba_wr_cfg(d, tok, pos, (u32) data, size);
+ DBG_CFG("%s(%x+%2x) = 0x%x (a)\n", __FUNCTION__, tok, pos,data);
+ return 0;
+ }
+
+ if (LBA_SKIP_PROBE(d) && (!lba_device_present(bus->secondary, devfn, d))) {
+ DBG_CFG("%s(%x+%2x) = 0x%x (b)\n", __FUNCTION__, tok, pos,data);
+ return 1; /* New Workaround */
+ }
+
+ DBG_CFG("%s(%x+%2x) = 0x%x (c)\n", __FUNCTION__, tok, pos, data);
+
+ /* Basic Algorithm */
+ LBA_CFG_ADDR_SETUP(d, tok | pos);
+ switch(size) {
+ case 1: WRITE_REG8 (data, d->hba.base_addr + LBA_PCI_CFG_DATA + (pos & 3));
+ break;
+ case 2: WRITE_REG16(data, d->hba.base_addr + LBA_PCI_CFG_DATA + (pos & 2));
+ break;
+ case 4: WRITE_REG32(data, d->hba.base_addr + LBA_PCI_CFG_DATA);
+ break;
+ }
+ /* flush posted write */
+ lba_t32 = READ_REG32(d->hba.base_addr + LBA_PCI_CFG_ADDR);
+ return 0;
+}
+
+
+static struct pci_ops elroy_cfg_ops = {
+ .read = elroy_cfg_read,
+ .write = elroy_cfg_write,
+};
+
+/*
+ * The mercury_cfg_ops are slightly misnamed; they're also used for Elroy
+ * TR4.0 as no additional bugs were found in this areea between Elroy and
+ * Mercury
+ */
+
+static int mercury_cfg_read(struct pci_bus *bus, unsigned int devfn, int pos, int size, u32 *data)
+{
+ struct lba_device *d = LBA_DEV(parisc_walk_tree(bus->bridge));
+ u32 local_bus = (bus->parent == NULL) ? 0 : bus->secondary;
+ u32 tok = LBA_CFG_TOK(local_bus, devfn);
+ void __iomem *data_reg = d->hba.base_addr + LBA_PCI_CFG_DATA;
+
+ if ((pos > 255) || (devfn > 255))
+ return -EINVAL;
+
+ LBA_CFG_TR4_ADDR_SETUP(d, tok | pos);
+ switch(size) {
+ case 1:
+ *data = READ_REG8(data_reg + (pos & 3));
+ break;
+ case 2:
+ *data = READ_REG16(data_reg + (pos & 2));
+ break;
+ case 4:
+ *data = READ_REG32(data_reg); break;
+ break;
+ }
+
+ DBG_CFG("mercury_cfg_read(%x+%2x) -> 0x%x\n", tok, pos, *data);
+ return 0;
+}
+
+/*
+ * LBA 4.0 config write code implements non-postable semantics
+ * by doing a read of CONFIG ADDR after the write.
+ */
+
+static int mercury_cfg_write(struct pci_bus *bus, unsigned int devfn, int pos, int size, u32 data)
+{
+ struct lba_device *d = LBA_DEV(parisc_walk_tree(bus->bridge));
+ void __iomem *data_reg = d->hba.base_addr + LBA_PCI_CFG_DATA;
+ u32 local_bus = (bus->parent == NULL) ? 0 : bus->secondary;
+ u32 tok = LBA_CFG_TOK(local_bus,devfn);
+
+ if ((pos > 255) || (devfn > 255))
+ return -EINVAL;
+
+ DBG_CFG("%s(%x+%2x) <- 0x%x (c)\n", __FUNCTION__, tok, pos, data);
+
+ LBA_CFG_TR4_ADDR_SETUP(d, tok | pos);
+ switch(size) {
+ case 1:
+ WRITE_REG8 (data, data_reg + (pos & 3));
+ break;
+ case 2:
+ WRITE_REG16(data, data_reg + (pos & 2));
+ break;
+ case 4:
+ WRITE_REG32(data, data_reg);
+ break;
+ }
+
+ /* flush posted write */
+ lba_t32 = READ_U32(d->hba.base_addr + LBA_PCI_CFG_ADDR);
+ return 0;
+}
+
+static struct pci_ops mercury_cfg_ops = {
+ .read = mercury_cfg_read,
+ .write = mercury_cfg_write,
+};
+
+
+static void
+lba_bios_init(void)
+{
+ DBG(MODULE_NAME ": lba_bios_init\n");
+}
+
+
+#ifdef CONFIG_64BIT
+
+/*
+** Determine if a device is already configured.
+** If so, reserve it resources.
+**
+** Read PCI cfg command register and see if I/O or MMIO is enabled.
+** PAT has to enable the devices it's using.
+**
+** Note: resources are fixed up before we try to claim them.
+*/
+static void
+lba_claim_dev_resources(struct pci_dev *dev)
+{
+ u16 cmd;
+ int i, srch_flags;
+
+ (void) pci_read_config_word(dev, PCI_COMMAND, &cmd);
+
+ srch_flags = (cmd & PCI_COMMAND_IO) ? IORESOURCE_IO : 0;
+ if (cmd & PCI_COMMAND_MEMORY)
+ srch_flags |= IORESOURCE_MEM;
+
+ if (!srch_flags)
+ return;
+
+ for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
+ if (dev->resource[i].flags & srch_flags) {
+ pci_claim_resource(dev, i);
+ DBG(" claimed %s %d [%lx,%lx]/%lx\n",
+ pci_name(dev), i,
+ dev->resource[i].start,
+ dev->resource[i].end,
+ dev->resource[i].flags
+ );
+ }
+ }
+}
+#else
+#define lba_claim_dev_resources(dev)
+#endif
+
+
+/*
+** The algorithm is generic code.
+** But it needs to access local data structures to get the IRQ base.
+** Could make this a "pci_fixup_irq(bus, region)" but not sure
+** it's worth it.
+**
+** Called by do_pci_scan_bus() immediately after each PCI bus is walked.
+** Resources aren't allocated until recursive buswalk below HBA is completed.
+*/
+static void
+lba_fixup_bus(struct pci_bus *bus)
+{
+ struct list_head *ln;
+#ifdef FBB_SUPPORT
+ u16 status;
+#endif
+ struct lba_device *ldev = LBA_DEV(parisc_walk_tree(bus->bridge));
+ int lba_portbase = HBA_PORT_BASE(ldev->hba.hba_num);
+
+ DBG("lba_fixup_bus(0x%p) bus %d platform_data 0x%p\n",
+ bus, bus->secondary, bus->bridge->platform_data);
+
+ /*
+ ** Properly Setup MMIO resources for this bus.
+ ** pci_alloc_primary_bus() mangles this.
+ */
+ if (bus->self) {
+ /* PCI-PCI Bridge */
+ pci_read_bridge_bases(bus);
+ } else {
+ /* Host-PCI Bridge */
+ int err, i;
+
+ DBG("lba_fixup_bus() %s [%lx/%lx]/%lx\n",
+ ldev->hba.io_space.name,
+ ldev->hba.io_space.start, ldev->hba.io_space.end,
+ ldev->hba.io_space.flags);
+ DBG("lba_fixup_bus() %s [%lx/%lx]/%lx\n",
+ ldev->hba.lmmio_space.name,
+ ldev->hba.lmmio_space.start, ldev->hba.lmmio_space.end,
+ ldev->hba.lmmio_space.flags);
+
+ err = request_resource(&ioport_resource, &(ldev->hba.io_space));
+ if (err < 0) {
+ lba_dump_res(&ioport_resource, 2);
+ BUG();
+ }
+
+ if (ldev->hba.elmmio_space.start) {
+ err = request_resource(&iomem_resource,
+ &(ldev->hba.elmmio_space));
+ if (err < 0) {
+
+ printk("FAILED: lba_fixup_bus() request for "
+ "elmmio_space [%lx/%lx]\n",
+ ldev->hba.elmmio_space.start,
+ ldev->hba.elmmio_space.end);
+
+ /* lba_dump_res(&iomem_resource, 2); */
+ /* BUG(); */
+ }
+ }
+
+ err = request_resource(&iomem_resource, &(ldev->hba.lmmio_space));
+ if (err < 0) {
+ /* FIXME overlaps with elmmio will fail here.
+ * Need to prune (or disable) the distributed range.
+ *
+ * BEWARE: conflicts with this lmmio range may be
+ * elmmio range which is pointing down another rope.
+ */
+
+ printk("FAILED: lba_fixup_bus() request for "
+ "lmmio_space [%lx/%lx]\n",
+ ldev->hba.lmmio_space.start,
+ ldev->hba.lmmio_space.end);
+ /* lba_dump_res(&iomem_resource, 2); */
+ }
+
+#ifdef CONFIG_64BIT
+ /* GMMIO is distributed range. Every LBA/Rope gets part it. */
+ if (ldev->hba.gmmio_space.flags) {
+ err = request_resource(&iomem_resource, &(ldev->hba.gmmio_space));
+ if (err < 0) {
+ printk("FAILED: lba_fixup_bus() request for "
+ "gmmio_space [%lx/%lx]\n",
+ ldev->hba.gmmio_space.start,
+ ldev->hba.gmmio_space.end);
+ lba_dump_res(&iomem_resource, 2);
+ BUG();
+ }
+ }
+#endif
+
+ /* advertize Host bridge resources to PCI bus */
+ bus->resource[0] = &(ldev->hba.io_space);
+ bus->resource[1] = &(ldev->hba.lmmio_space);
+ i=2;
+ if (ldev->hba.elmmio_space.start)
+ bus->resource[i++] = &(ldev->hba.elmmio_space);
+ if (ldev->hba.gmmio_space.start)
+ bus->resource[i++] = &(ldev->hba.gmmio_space);
+
+ }
+
+ list_for_each(ln, &bus->devices) {
+ int i;
+ struct pci_dev *dev = pci_dev_b(ln);
+
+ DBG("lba_fixup_bus() %s\n", pci_name(dev));
+
+ /* Virtualize Device/Bridge Resources. */
+ for (i = 0; i < PCI_BRIDGE_RESOURCES; i++) {
+ struct resource *res = &dev->resource[i];
+
+ /* If resource not allocated - skip it */
+ if (!res->start)
+ continue;
+
+ if (res->flags & IORESOURCE_IO) {
+ DBG("lba_fixup_bus() I/O Ports [%lx/%lx] -> ",
+ res->start, res->end);
+ res->start |= lba_portbase;
+ res->end |= lba_portbase;
+ DBG("[%lx/%lx]\n", res->start, res->end);
+ } else if (res->flags & IORESOURCE_MEM) {
+ /*
+ ** Convert PCI (IO_VIEW) addresses to
+ ** processor (PA_VIEW) addresses
+ */
+ DBG("lba_fixup_bus() MMIO [%lx/%lx] -> ",
+ res->start, res->end);
+ res->start = PCI_HOST_ADDR(HBA_DATA(ldev), res->start);
+ res->end = PCI_HOST_ADDR(HBA_DATA(ldev), res->end);
+ DBG("[%lx/%lx]\n", res->start, res->end);
+ } else {
+ DBG("lba_fixup_bus() WTF? 0x%lx [%lx/%lx] XXX",
+ res->flags, res->start, res->end);
+ }
+ }
+
+#ifdef FBB_SUPPORT
+ /*
+ ** If one device does not support FBB transfers,
+ ** No one on the bus can be allowed to use them.
+ */
+ (void) pci_read_config_word(dev, PCI_STATUS, &status);
+ bus->bridge_ctl &= ~(status & PCI_STATUS_FAST_BACK);
+#endif
+
+ if (is_pdc_pat()) {
+ /* Claim resources for PDC's devices */
+ lba_claim_dev_resources(dev);
+ }
+
+ /*
+ ** P2PB's have no IRQs. ignore them.
+ */
+ if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI)
+ continue;
+
+ /* Adjust INTERRUPT_LINE for this dev */
+ iosapic_fixup_irq(ldev->iosapic_obj, dev);
+ }
+
+#ifdef FBB_SUPPORT
+/* FIXME/REVISIT - finish figuring out to set FBB on both
+** pci_setup_bridge() clobbers PCI_BRIDGE_CONTROL.
+** Can't fixup here anyway....garr...
+*/
+ if (fbb_enable) {
+ if (bus->self) {
+ u8 control;
+ /* enable on PPB */
+ (void) pci_read_config_byte(bus->self, PCI_BRIDGE_CONTROL, &control);
+ (void) pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, control | PCI_STATUS_FAST_BACK);
+
+ } else {
+ /* enable on LBA */
+ }
+ fbb_enable = PCI_COMMAND_FAST_BACK;
+ }
+
+ /* Lastly enable FBB/PERR/SERR on all devices too */
+ list_for_each(ln, &bus->devices) {
+ (void) pci_read_config_word(dev, PCI_COMMAND, &status);
+ status |= PCI_COMMAND_PARITY | PCI_COMMAND_SERR | fbb_enable;
+ (void) pci_write_config_word(dev, PCI_COMMAND, status);
+ }
+#endif
+}
+
+
+struct pci_bios_ops lba_bios_ops = {
+ .init = lba_bios_init,
+ .fixup_bus = lba_fixup_bus,
+};
+
+
+
+
+/*******************************************************
+**
+** LBA Sprockets "I/O Port" Space Accessor Functions
+**
+** This set of accessor functions is intended for use with
+** "legacy firmware" (ie Sprockets on Allegro/Forte boxes).
+**
+** Many PCI devices don't require use of I/O port space (eg Tulip,
+** NCR720) since they export the same registers to both MMIO and
+** I/O port space. In general I/O port space is slower than
+** MMIO since drivers are designed so PIO writes can be posted.
+**
+********************************************************/
+
+#define LBA_PORT_IN(size, mask) \
+static u##size lba_astro_in##size (struct pci_hba_data *d, u16 addr) \
+{ \
+ u##size t; \
+ t = READ_REG##size(astro_iop_base + addr); \
+ DBG_PORT(" 0x%x\n", t); \
+ return (t); \
+}
+
+LBA_PORT_IN( 8, 3)
+LBA_PORT_IN(16, 2)
+LBA_PORT_IN(32, 0)
+
+
+
+/*
+** BUG X4107: Ordering broken - DMA RD return can bypass PIO WR
+**
+** Fixed in Elroy 2.2. The READ_U32(..., LBA_FUNC_ID) below is
+** guarantee non-postable completion semantics - not avoid X4107.
+** The READ_U32 only guarantees the write data gets to elroy but
+** out to the PCI bus. We can't read stuff from I/O port space
+** since we don't know what has side-effects. Attempting to read
+** from configuration space would be suicidal given the number of
+** bugs in that elroy functionality.
+**
+** Description:
+** DMA read results can improperly pass PIO writes (X4107). The
+** result of this bug is that if a processor modifies a location in
+** memory after having issued PIO writes, the PIO writes are not
+** guaranteed to be completed before a PCI device is allowed to see
+** the modified data in a DMA read.
+**
+** Note that IKE bug X3719 in TR1 IKEs will result in the same
+** symptom.
+**
+** Workaround:
+** The workaround for this bug is to always follow a PIO write with
+** a PIO read to the same bus before starting DMA on that PCI bus.
+**
+*/
+#define LBA_PORT_OUT(size, mask) \
+static void lba_astro_out##size (struct pci_hba_data *d, u16 addr, u##size val) \
+{ \
+ DBG_PORT("%s(0x%p, 0x%x, 0x%x)\n", __FUNCTION__, d, addr, val); \
+ WRITE_REG##size(val, astro_iop_base + addr); \
+ if (LBA_DEV(d)->hw_rev < 3) \
+ lba_t32 = READ_U32(d->base_addr + LBA_FUNC_ID); \
+}
+
+LBA_PORT_OUT( 8, 3)
+LBA_PORT_OUT(16, 2)
+LBA_PORT_OUT(32, 0)
+
+
+static struct pci_port_ops lba_astro_port_ops = {
+ .inb = lba_astro_in8,
+ .inw = lba_astro_in16,
+ .inl = lba_astro_in32,
+ .outb = lba_astro_out8,
+ .outw = lba_astro_out16,
+ .outl = lba_astro_out32
+};
+
+
+#ifdef CONFIG_64BIT
+#define PIOP_TO_GMMIO(lba, addr) \
+ ((lba)->iop_base + (((addr)&0xFFFC)<<10) + ((addr)&3))
+
+/*******************************************************
+**
+** LBA PAT "I/O Port" Space Accessor Functions
+**
+** This set of accessor functions is intended for use with
+** "PAT PDC" firmware (ie Prelude/Rhapsody/Piranha boxes).
+**
+** This uses the PIOP space located in the first 64MB of GMMIO.
+** Each rope gets a full 64*KB* (ie 4 bytes per page) this way.
+** bits 1:0 stay the same. bits 15:2 become 25:12.
+** Then add the base and we can generate an I/O Port cycle.
+********************************************************/
+#undef LBA_PORT_IN
+#define LBA_PORT_IN(size, mask) \
+static u##size lba_pat_in##size (struct pci_hba_data *l, u16 addr) \
+{ \
+ u##size t; \
+ DBG_PORT("%s(0x%p, 0x%x) ->", __FUNCTION__, l, addr); \
+ t = READ_REG##size(PIOP_TO_GMMIO(LBA_DEV(l), addr)); \
+ DBG_PORT(" 0x%x\n", t); \
+ return (t); \
+}
+
+LBA_PORT_IN( 8, 3)
+LBA_PORT_IN(16, 2)
+LBA_PORT_IN(32, 0)
+
+
+#undef LBA_PORT_OUT
+#define LBA_PORT_OUT(size, mask) \
+static void lba_pat_out##size (struct pci_hba_data *l, u16 addr, u##size val) \
+{ \
+ void *where = (void *) PIOP_TO_GMMIO(LBA_DEV(l), addr); \
+ DBG_PORT("%s(0x%p, 0x%x, 0x%x)\n", __FUNCTION__, l, addr, val); \
+ WRITE_REG##size(val, where); \
+ /* flush the I/O down to the elroy at least */ \
+ lba_t32 = READ_U32(l->base_addr + LBA_FUNC_ID); \
+}
+
+LBA_PORT_OUT( 8, 3)
+LBA_PORT_OUT(16, 2)
+LBA_PORT_OUT(32, 0)
+
+
+static struct pci_port_ops lba_pat_port_ops = {
+ .inb = lba_pat_in8,
+ .inw = lba_pat_in16,
+ .inl = lba_pat_in32,
+ .outb = lba_pat_out8,
+ .outw = lba_pat_out16,
+ .outl = lba_pat_out32
+};
+
+
+
+/*
+** make range information from PDC available to PCI subsystem.
+** We make the PDC call here in order to get the PCI bus range
+** numbers. The rest will get forwarded in pcibios_fixup_bus().
+** We don't have a struct pci_bus assigned to us yet.
+*/
+static void
+lba_pat_resources(struct parisc_device *pa_dev, struct lba_device *lba_dev)
+{
+ unsigned long bytecnt;
+ pdc_pat_cell_mod_maddr_block_t pa_pdc_cell; /* PA_VIEW */
+ pdc_pat_cell_mod_maddr_block_t io_pdc_cell; /* IO_VIEW */
+ long io_count;
+ long status; /* PDC return status */
+ long pa_count;
+ int i;
+
+ /* return cell module (IO view) */
+ status = pdc_pat_cell_module(&bytecnt, pa_dev->pcell_loc, pa_dev->mod_index,
+ PA_VIEW, & pa_pdc_cell);
+ pa_count = pa_pdc_cell.mod[1];
+
+ status |= pdc_pat_cell_module(&bytecnt, pa_dev->pcell_loc, pa_dev->mod_index,
+ IO_VIEW, &io_pdc_cell);
+ io_count = io_pdc_cell.mod[1];
+
+ /* We've already done this once for device discovery...*/
+ if (status != PDC_OK) {
+ panic("pdc_pat_cell_module() call failed for LBA!\n");
+ }
+
+ if (PAT_GET_ENTITY(pa_pdc_cell.mod_info) != PAT_ENTITY_LBA) {
+ panic("pdc_pat_cell_module() entity returned != PAT_ENTITY_LBA!\n");
+ }
+
+ /*
+ ** Inspect the resources PAT tells us about
+ */
+ for (i = 0; i < pa_count; i++) {
+ struct {
+ unsigned long type;
+ unsigned long start;
+ unsigned long end; /* aka finish */
+ } *p, *io;
+ struct resource *r;
+
+ p = (void *) &(pa_pdc_cell.mod[2+i*3]);
+ io = (void *) &(io_pdc_cell.mod[2+i*3]);
+
+ /* Convert the PAT range data to PCI "struct resource" */
+ switch(p->type & 0xff) {
+ case PAT_PBNUM:
+ lba_dev->hba.bus_num.start = p->start;
+ lba_dev->hba.bus_num.end = p->end;
+ break;
+
+ case PAT_LMMIO:
+ /* used to fix up pre-initialized MEM BARs */
+ if (!lba_dev->hba.lmmio_space.start) {
+ sprintf(lba_dev->hba.lmmio_name,
+ "PCI%02lx LMMIO",
+ lba_dev->hba.bus_num.start);
+ lba_dev->hba.lmmio_space_offset = p->start -
+ io->start;
+ r = &lba_dev->hba.lmmio_space;
+ r->name = lba_dev->hba.lmmio_name;
+ } else if (!lba_dev->hba.elmmio_space.start) {
+ sprintf(lba_dev->hba.elmmio_name,
+ "PCI%02lx ELMMIO",
+ lba_dev->hba.bus_num.start);
+ r = &lba_dev->hba.elmmio_space;
+ r->name = lba_dev->hba.elmmio_name;
+ } else {
+ printk(KERN_WARNING MODULE_NAME
+ " only supports 2 LMMIO resources!\n");
+ break;
+ }
+
+ r->start = p->start;
+ r->end = p->end;
+ r->flags = IORESOURCE_MEM;
+ r->parent = r->sibling = r->child = NULL;
+ break;
+
+ case PAT_GMMIO:
+ /* MMIO space > 4GB phys addr; for 64-bit BAR */
+ sprintf(lba_dev->hba.gmmio_name, "PCI%02lx GMMIO",
+ lba_dev->hba.bus_num.start);
+ r = &lba_dev->hba.gmmio_space;
+ r->name = lba_dev->hba.gmmio_name;
+ r->start = p->start;
+ r->end = p->end;
+ r->flags = IORESOURCE_MEM;
+ r->parent = r->sibling = r->child = NULL;
+ break;
+
+ case PAT_NPIOP:
+ printk(KERN_WARNING MODULE_NAME
+ " range[%d] : ignoring NPIOP (0x%lx)\n",
+ i, p->start);
+ break;
+
+ case PAT_PIOP:
+ /*
+ ** Postable I/O port space is per PCI host adapter.
+ ** base of 64MB PIOP region
+ */
+ lba_dev->iop_base = ioremap(p->start, 64 * 1024 * 1024);
+
+ sprintf(lba_dev->hba.io_name, "PCI%02lx Ports",
+ lba_dev->hba.bus_num.start);
+ r = &lba_dev->hba.io_space;
+ r->name = lba_dev->hba.io_name;
+ r->start = HBA_PORT_BASE(lba_dev->hba.hba_num);
+ r->end = r->start + HBA_PORT_SPACE_SIZE - 1;
+ r->flags = IORESOURCE_IO;
+ r->parent = r->sibling = r->child = NULL;
+ break;
+
+ default:
+ printk(KERN_WARNING MODULE_NAME
+ " range[%d] : unknown pat range type (0x%lx)\n",
+ i, p->type & 0xff);
+ break;
+ }
+ }
+}
+#else
+/* keep compiler from complaining about missing declarations */
+#define lba_pat_port_ops lba_astro_port_ops
+#define lba_pat_resources(pa_dev, lba_dev)
+#endif /* CONFIG_64BIT */
+
+
+extern void sba_distributed_lmmio(struct parisc_device *, struct resource *);
+extern void sba_directed_lmmio(struct parisc_device *, struct resource *);
+
+
+static void
+lba_legacy_resources(struct parisc_device *pa_dev, struct lba_device *lba_dev)
+{
+ struct resource *r;
+ int lba_num;
+
+ lba_dev->hba.lmmio_space_offset = PCI_F_EXTEND;
+
+ /*
+ ** With "legacy" firmware, the lowest byte of FW_SCRATCH
+ ** represents bus->secondary and the second byte represents
+ ** bus->subsidiary (i.e. highest PPB programmed by firmware).
+ ** PCI bus walk *should* end up with the same result.
+ ** FIXME: But we don't have sanity checks in PCI or LBA.
+ */
+ lba_num = READ_REG32(lba_dev->hba.base_addr + LBA_FW_SCRATCH);
+ r = &(lba_dev->hba.bus_num);
+ r->name = "LBA PCI Busses";
+ r->start = lba_num & 0xff;
+ r->end = (lba_num>>8) & 0xff;
+
+ /* Set up local PCI Bus resources - we don't need them for
+ ** Legacy boxes but it's nice to see in /proc/iomem.
+ */
+ r = &(lba_dev->hba.lmmio_space);
+ sprintf(lba_dev->hba.lmmio_name, "PCI%02lx LMMIO",
+ lba_dev->hba.bus_num.start);
+ r->name = lba_dev->hba.lmmio_name;
+
+#if 1
+ /* We want the CPU -> IO routing of addresses.
+ * The SBA BASE/MASK registers control CPU -> IO routing.
+ * Ask SBA what is routed to this rope/LBA.
+ */
+ sba_distributed_lmmio(pa_dev, r);
+#else
+ /*
+ * The LBA BASE/MASK registers control IO -> System routing.
+ *
+ * The following code works but doesn't get us what we want.
+ * Well, only because firmware (v5.0) on C3000 doesn't program
+ * the LBA BASE/MASE registers to be the exact inverse of
+ * the corresponding SBA registers. Other Astro/Pluto
+ * based platform firmware may do it right.
+ *
+ * Should someone want to mess with MSI, they may need to
+ * reprogram LBA BASE/MASK registers. Thus preserve the code
+ * below until MSI is known to work on C3000/A500/N4000/RP3440.
+ *
+ * Using the code below, /proc/iomem shows:
+ * ...
+ * f0000000-f0ffffff : PCI00 LMMIO
+ * f05d0000-f05d0000 : lcd_data
+ * f05d0008-f05d0008 : lcd_cmd
+ * f1000000-f1ffffff : PCI01 LMMIO
+ * f4000000-f4ffffff : PCI02 LMMIO
+ * f4000000-f4001fff : sym53c8xx
+ * f4002000-f4003fff : sym53c8xx
+ * f4004000-f40043ff : sym53c8xx
+ * f4005000-f40053ff : sym53c8xx
+ * f4007000-f4007fff : ohci_hcd
+ * f4008000-f40083ff : tulip
+ * f6000000-f6ffffff : PCI03 LMMIO
+ * f8000000-fbffffff : PCI00 ELMMIO
+ * fa100000-fa4fffff : stifb mmio
+ * fb000000-fb1fffff : stifb fb
+ *
+ * But everything listed under PCI02 actually lives under PCI00.
+ * This is clearly wrong.
+ *
+ * Asking SBA how things are routed tells the correct story:
+ * LMMIO_BASE/MASK/ROUTE f4000001 fc000000 00000000
+ * DIR0_BASE/MASK/ROUTE fa000001 fe000000 00000006
+ * DIR1_BASE/MASK/ROUTE f9000001 ff000000 00000004
+ * DIR2_BASE/MASK/ROUTE f0000000 fc000000 00000000
+ * DIR3_BASE/MASK/ROUTE f0000000 fc000000 00000000
+ *
+ * Which looks like this in /proc/iomem:
+ * f4000000-f47fffff : PCI00 LMMIO
+ * f4000000-f4001fff : sym53c8xx
+ * ...[deteled core devices - same as above]...
+ * f4008000-f40083ff : tulip
+ * f4800000-f4ffffff : PCI01 LMMIO
+ * f6000000-f67fffff : PCI02 LMMIO
+ * f7000000-f77fffff : PCI03 LMMIO
+ * f9000000-f9ffffff : PCI02 ELMMIO
+ * fa000000-fbffffff : PCI03 ELMMIO
+ * fa100000-fa4fffff : stifb mmio
+ * fb000000-fb1fffff : stifb fb
+ *
+ * ie all Built-in core are under now correctly under PCI00.
+ * The "PCI02 ELMMIO" directed range is for:
+ * +-[02]---03.0 3Dfx Interactive, Inc. Voodoo 2
+ *
+ * All is well now.
+ */
+ r->start = READ_REG32(lba_dev->hba.base_addr + LBA_LMMIO_BASE);
+ if (r->start & 1) {
+ unsigned long rsize;
+
+ r->flags = IORESOURCE_MEM;
+ /* mmio_mask also clears Enable bit */
+ r->start &= mmio_mask;
+ r->start = PCI_HOST_ADDR(HBA_DATA(lba_dev), r->start);
+ rsize = ~ READ_REG32(lba_dev->hba.base_addr + LBA_LMMIO_MASK);
+
+ /*
+ ** Each rope only gets part of the distributed range.
+ ** Adjust "window" for this rope.
+ */
+ rsize /= ROPES_PER_IOC;
+ r->start += (rsize + 1) * LBA_NUM(pa_dev->hpa);
+ r->end = r->start + rsize;
+ } else {
+ r->end = r->start = 0; /* Not enabled. */
+ }
+#endif
+
+ /*
+ ** "Directed" ranges are used when the "distributed range" isn't
+ ** sufficient for all devices below a given LBA. Typically devices
+ ** like graphics cards or X25 may need a directed range when the
+ ** bus has multiple slots (ie multiple devices) or the device
+ ** needs more than the typical 4 or 8MB a distributed range offers.
+ **
+ ** The main reason for ignoring it now frigging complications.
+ ** Directed ranges may overlap (and have precedence) over
+ ** distributed ranges. Or a distributed range assigned to a unused
+ ** rope may be used by a directed range on a different rope.
+ ** Support for graphics devices may require fixing this
+ ** since they may be assigned a directed range which overlaps
+ ** an existing (but unused portion of) distributed range.
+ */
+ r = &(lba_dev->hba.elmmio_space);
+ sprintf(lba_dev->hba.elmmio_name, "PCI%02lx ELMMIO",
+ lba_dev->hba.bus_num.start);
+ r->name = lba_dev->hba.elmmio_name;
+
+#if 1
+ /* See comment which precedes call to sba_directed_lmmio() */
+ sba_directed_lmmio(pa_dev, r);
+#else
+ r->start = READ_REG32(lba_dev->hba.base_addr + LBA_ELMMIO_BASE);
+
+ if (r->start & 1) {
+ unsigned long rsize;
+ r->flags = IORESOURCE_MEM;
+ /* mmio_mask also clears Enable bit */
+ r->start &= mmio_mask;
+ r->start = PCI_HOST_ADDR(HBA_DATA(lba_dev), r->start);
+ rsize = READ_REG32(lba_dev->hba.base_addr + LBA_ELMMIO_MASK);
+ r->end = r->start + ~rsize;
+ }
+#endif
+
+ r = &(lba_dev->hba.io_space);
+ sprintf(lba_dev->hba.io_name, "PCI%02lx Ports",
+ lba_dev->hba.bus_num.start);
+ r->name = lba_dev->hba.io_name;
+ r->flags = IORESOURCE_IO;
+ r->start = READ_REG32(lba_dev->hba.base_addr + LBA_IOS_BASE) & ~1L;
+ r->end = r->start + (READ_REG32(lba_dev->hba.base_addr + LBA_IOS_MASK) ^ (HBA_PORT_SPACE_SIZE - 1));
+
+ /* Virtualize the I/O Port space ranges */
+ lba_num = HBA_PORT_BASE(lba_dev->hba.hba_num);
+ r->start |= lba_num;
+ r->end |= lba_num;
+}
+
+
+/**************************************************************************
+**
+** LBA initialization code (HW and SW)
+**
+** o identify LBA chip itself
+** o initialize LBA chip modes (HardFail)
+** o FIXME: initialize DMA hints for reasonable defaults
+** o enable configuration functions
+** o call pci_register_ops() to discover devs (fixup/fixup_bus get invoked)
+**
+**************************************************************************/
+
+static int __init
+lba_hw_init(struct lba_device *d)
+{
+ u32 stat;
+ u32 bus_reset; /* PDC_PAT_BUG */
+
+#if 0
+ printk(KERN_DEBUG "LBA %lx STAT_CTL %Lx ERROR_CFG %Lx STATUS %Lx DMA_CTL %Lx\n",
+ d->hba.base_addr,
+ READ_REG64(d->hba.base_addr + LBA_STAT_CTL),
+ READ_REG64(d->hba.base_addr + LBA_ERROR_CONFIG),
+ READ_REG64(d->hba.base_addr + LBA_ERROR_STATUS),
+ READ_REG64(d->hba.base_addr + LBA_DMA_CTL) );
+ printk(KERN_DEBUG " ARB mask %Lx pri %Lx mode %Lx mtlt %Lx\n",
+ READ_REG64(d->hba.base_addr + LBA_ARB_MASK),
+ READ_REG64(d->hba.base_addr + LBA_ARB_PRI),
+ READ_REG64(d->hba.base_addr + LBA_ARB_MODE),
+ READ_REG64(d->hba.base_addr + LBA_ARB_MTLT) );
+ printk(KERN_DEBUG " HINT cfg 0x%Lx\n",
+ READ_REG64(d->hba.base_addr + LBA_HINT_CFG));
+ printk(KERN_DEBUG " HINT reg ");
+ { int i;
+ for (i=LBA_HINT_BASE; i< (14*8 + LBA_HINT_BASE); i+=8)
+ printk(" %Lx", READ_REG64(d->hba.base_addr + i));
+ }
+ printk("\n");
+#endif /* DEBUG_LBA_PAT */
+
+#ifdef CONFIG_64BIT
+/*
+ * FIXME add support for PDC_PAT_IO "Get slot status" - OLAR support
+ * Only N-Class and up can really make use of Get slot status.
+ * maybe L-class too but I've never played with it there.
+ */
+#endif
+
+ /* PDC_PAT_BUG: exhibited in rev 40.48 on L2000 */
+ bus_reset = READ_REG32(d->hba.base_addr + LBA_STAT_CTL + 4) & 1;
+ if (bus_reset) {
+ printk(KERN_DEBUG "NOTICE: PCI bus reset still asserted! (clearing)\n");
+ }
+
+ stat = READ_REG32(d->hba.base_addr + LBA_ERROR_CONFIG);
+ if (stat & LBA_SMART_MODE) {
+ printk(KERN_DEBUG "NOTICE: LBA in SMART mode! (cleared)\n");
+ stat &= ~LBA_SMART_MODE;
+ WRITE_REG32(stat, d->hba.base_addr + LBA_ERROR_CONFIG);
+ }
+
+ /* Set HF mode as the default (vs. -1 mode). */
+ stat = READ_REG32(d->hba.base_addr + LBA_STAT_CTL);
+ WRITE_REG32(stat | HF_ENABLE, d->hba.base_addr + LBA_STAT_CTL);
+
+ /*
+ ** Writing a zero to STAT_CTL.rf (bit 0) will clear reset signal
+ ** if it's not already set. If we just cleared the PCI Bus Reset
+ ** signal, wait a bit for the PCI devices to recover and setup.
+ */
+ if (bus_reset)
+ mdelay(pci_post_reset_delay);
+
+ if (0 == READ_REG32(d->hba.base_addr + LBA_ARB_MASK)) {
+ /*
+ ** PDC_PAT_BUG: PDC rev 40.48 on L2000.
+ ** B2000/C3600/J6000 also have this problem?
+ **
+ ** Elroys with hot pluggable slots don't get configured
+ ** correctly if the slot is empty. ARB_MASK is set to 0
+ ** and we can't master transactions on the bus if it's
+ ** not at least one. 0x3 enables elroy and first slot.
+ */
+ printk(KERN_DEBUG "NOTICE: Enabling PCI Arbitration\n");
+ WRITE_REG32(0x3, d->hba.base_addr + LBA_ARB_MASK);
+ }
+
+ /*
+ ** FIXME: Hint registers are programmed with default hint
+ ** values by firmware. Hints should be sane even if we
+ ** can't reprogram them the way drivers want.
+ */
+ return 0;
+}
+
+
+
+/*
+** Determine if lba should claim this chip (return 0) or not (return 1).
+** If so, initialize the chip and tell other partners in crime they
+** have work to do.
+*/
+static int __init
+lba_driver_probe(struct parisc_device *dev)
+{
+ struct lba_device *lba_dev;
+ struct pci_bus *lba_bus;
+ struct pci_ops *cfg_ops;
+ u32 func_class;
+ void *tmp_obj;
+ char *version;
+ void __iomem *addr = ioremap(dev->hpa, 4096);
+
+ /* Read HW Rev First */
+ func_class = READ_REG32(addr + LBA_FCLASS);
+
+ if (IS_ELROY(dev)) {
+ func_class &= 0xf;
+ switch (func_class) {
+ case 0: version = "TR1.0"; break;
+ case 1: version = "TR2.0"; break;
+ case 2: version = "TR2.1"; break;
+ case 3: version = "TR2.2"; break;
+ case 4: version = "TR3.0"; break;
+ case 5: version = "TR4.0"; break;
+ default: version = "TR4+";
+ }
+
+ printk(KERN_INFO "%s version %s (0x%x) found at 0x%lx\n",
+ MODULE_NAME, version, func_class & 0xf, dev->hpa);
+
+ if (func_class < 2) {
+ printk(KERN_WARNING "Can't support LBA older than "
+ "TR2.1 - continuing under adversity.\n");
+ }
+
+#if 0
+/* Elroy TR4.0 should work with simple algorithm.
+ But it doesn't. Still missing something. *sigh*
+*/
+ if (func_class > 4) {
+ cfg_ops = &mercury_cfg_ops;
+ } else
+#endif
+ {
+ cfg_ops = &elroy_cfg_ops;
+ }
+
+ } else if (IS_MERCURY(dev) || IS_QUICKSILVER(dev)) {
+ func_class &= 0xff;
+ version = kmalloc(6, GFP_KERNEL);
+ sprintf(version,"TR%d.%d",(func_class >> 4),(func_class & 0xf));
+ /* We could use one printk for both Elroy and Mercury,
+ * but for the mask for func_class.
+ */
+ printk(KERN_INFO "%s version %s (0x%x) found at 0x%lx\n",
+ MODULE_NAME, version, func_class & 0xff, dev->hpa);
+ cfg_ops = &mercury_cfg_ops;
+ } else {
+ printk(KERN_ERR "Unknown LBA found at 0x%lx\n", dev->hpa);
+ return -ENODEV;
+ }
+
+ /*
+ ** Tell I/O SAPIC driver we have a IRQ handler/region.
+ */
+ tmp_obj = iosapic_register(dev->hpa + LBA_IOSAPIC_BASE);
+
+ /* NOTE: PCI devices (e.g. 103c:1005 graphics card) which don't
+ ** have an IRT entry will get NULL back from iosapic code.
+ */
+
+ lba_dev = kmalloc(sizeof(struct lba_device), GFP_KERNEL);
+ if (!lba_dev) {
+ printk(KERN_ERR "lba_init_chip - couldn't alloc lba_device\n");
+ return(1);
+ }
+
+ memset(lba_dev, 0, sizeof(struct lba_device));
+
+
+ /* ---------- First : initialize data we already have --------- */
+
+ lba_dev->hw_rev = func_class;
+ lba_dev->hba.base_addr = addr;
+ lba_dev->hba.dev = dev;
+ lba_dev->iosapic_obj = tmp_obj; /* save interrupt handle */
+ lba_dev->hba.iommu = sba_get_iommu(dev); /* get iommu data */
+
+ /* ------------ Second : initialize common stuff ---------- */
+ pci_bios = &lba_bios_ops;
+ pcibios_register_hba(HBA_DATA(lba_dev));
+ spin_lock_init(&lba_dev->lba_lock);
+
+ if (lba_hw_init(lba_dev))
+ return(1);
+
+ /* ---------- Third : setup I/O Port and MMIO resources --------- */
+
+ if (is_pdc_pat()) {
+ /* PDC PAT firmware uses PIOP region of GMMIO space. */
+ pci_port = &lba_pat_port_ops;
+ /* Go ask PDC PAT what resources this LBA has */
+ lba_pat_resources(dev, lba_dev);
+ } else {
+ if (!astro_iop_base) {
+ /* Sprockets PDC uses NPIOP region */
+ astro_iop_base = ioremap(LBA_PORT_BASE, 64 * 1024);
+ pci_port = &lba_astro_port_ops;
+ }
+
+ /* Poke the chip a bit for /proc output */
+ lba_legacy_resources(dev, lba_dev);
+ }
+
+ /*
+ ** Tell PCI support another PCI bus was found.
+ ** Walks PCI bus for us too.
+ */
+ dev->dev.platform_data = lba_dev;
+ lba_bus = lba_dev->hba.hba_bus =
+ pci_scan_bus_parented(&dev->dev, lba_dev->hba.bus_num.start,
+ cfg_ops, NULL);
+
+ /* This is in lieu of calling pci_assign_unassigned_resources() */
+ if (is_pdc_pat()) {
+ /* assign resources to un-initialized devices */
+
+ DBG_PAT("LBA pci_bus_size_bridges()\n");
+ pci_bus_size_bridges(lba_bus);
+
+ DBG_PAT("LBA pci_bus_assign_resources()\n");
+ pci_bus_assign_resources(lba_bus);
+
+#ifdef DEBUG_LBA_PAT
+ DBG_PAT("\nLBA PIOP resource tree\n");
+ lba_dump_res(&lba_dev->hba.io_space, 2);
+ DBG_PAT("\nLBA LMMIO resource tree\n");
+ lba_dump_res(&lba_dev->hba.lmmio_space, 2);
+#endif
+ }
+ pci_enable_bridges(lba_bus);
+
+
+ /*
+ ** Once PCI register ops has walked the bus, access to config
+ ** space is restricted. Avoids master aborts on config cycles.
+ ** Early LBA revs go fatal on *any* master abort.
+ */
+ if (cfg_ops == &elroy_cfg_ops) {
+ lba_dev->flags |= LBA_FLAG_SKIP_PROBE;
+ }
+
+ /* Whew! Finally done! Tell services we got this one covered. */
+ return 0;
+}
+
+static struct parisc_device_id lba_tbl[] = {
+ { HPHW_BRIDGE, HVERSION_REV_ANY_ID, ELROY_HVERS, 0xa },
+ { HPHW_BRIDGE, HVERSION_REV_ANY_ID, MERCURY_HVERS, 0xa },
+ { HPHW_BRIDGE, HVERSION_REV_ANY_ID, QUICKSILVER_HVERS, 0xa },
+ { 0, }
+};
+
+static struct parisc_driver lba_driver = {
+ .name = MODULE_NAME,
+ .id_table = lba_tbl,
+ .probe = lba_driver_probe,
+};
+
+/*
+** One time initialization to let the world know the LBA was found.
+** Must be called exactly once before pci_init().
+*/
+void __init lba_init(void)
+{
+ register_parisc_driver(&lba_driver);
+}
+
+/*
+** Initialize the IBASE/IMASK registers for LBA (Elroy).
+** Only called from sba_iommu.c in order to route ranges (MMIO vs DMA).
+** sba_iommu is responsible for locking (none needed at init time).
+*/
+void lba_set_iregs(struct parisc_device *lba, u32 ibase, u32 imask)
+{
+ void __iomem * base_addr = ioremap(lba->hpa, 4096);
+
+ imask <<= 2; /* adjust for hints - 2 more bits */
+
+ /* Make sure we aren't trying to set bits that aren't writeable. */
+ WARN_ON((ibase & 0x001fffff) != 0);
+ WARN_ON((imask & 0x001fffff) != 0);
+
+ DBG("%s() ibase 0x%x imask 0x%x\n", __FUNCTION__, ibase, imask);
+ WRITE_REG32( imask, base_addr + LBA_IMASK);
+ WRITE_REG32( ibase, base_addr + LBA_IBASE);
+ iounmap(base_addr);
+}
+
diff --git a/drivers/parisc/led.c b/drivers/parisc/led.c
new file mode 100644
index 000000000000..e90fb72a6962
--- /dev/null
+++ b/drivers/parisc/led.c
@@ -0,0 +1,760 @@
+/*
+ * Chassis LCD/LED driver for HP-PARISC workstations
+ *
+ * (c) Copyright 2000 Red Hat Software
+ * (c) Copyright 2000 Helge Deller <hdeller@redhat.com>
+ * (c) Copyright 2001-2004 Helge Deller <deller@gmx.de>
+ * (c) Copyright 2001 Randolph Chung <tausq@debian.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * TODO:
+ * - speed-up calculations with inlined assembler
+ * - interface to write to second row of LCD from /proc (if technically possible)
+ *
+ * Changes:
+ * - Audit copy_from_user in led_proc_write.
+ * Daniele Bellucci <bellucda@tiscali.it>
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/stddef.h> /* for offsetof() */
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/ioport.h>
+#include <linux/utsname.h>
+#include <linux/delay.h>
+#include <linux/netdevice.h>
+#include <linux/inetdevice.h>
+#include <linux/in.h>
+#include <linux/interrupt.h>
+#include <linux/kernel_stat.h>
+#include <linux/reboot.h>
+#include <linux/proc_fs.h>
+#include <linux/ctype.h>
+#include <linux/blkdev.h>
+#include <asm/io.h>
+#include <asm/processor.h>
+#include <asm/hardware.h>
+#include <asm/param.h> /* HZ */
+#include <asm/led.h>
+#include <asm/pdc.h>
+#include <asm/uaccess.h>
+
+/* The control of the LEDs and LCDs on PARISC-machines have to be done
+ completely in software. The necessary calculations are done in a tasklet
+ which is scheduled at every timer interrupt and since the calculations
+ may consume relatively much CPU-time some of the calculations can be
+ turned off with the following variables (controlled via procfs) */
+
+static int led_type = -1;
+static int led_heartbeat = 1;
+static int led_diskio = 1;
+static int led_lanrxtx = 1;
+static char lcd_text[32];
+static char lcd_text_default[32];
+
+#if 0
+#define DPRINTK(x) printk x
+#else
+#define DPRINTK(x)
+#endif
+
+
+struct lcd_block {
+ unsigned char command; /* stores the command byte */
+ unsigned char on; /* value for turning LED on */
+ unsigned char off; /* value for turning LED off */
+};
+
+/* Structure returned by PDC_RETURN_CHASSIS_INFO */
+/* NOTE: we use unsigned long:16 two times, since the following member
+ lcd_cmd_reg_addr needs to be 64bit aligned on 64bit PA2.0-machines */
+struct pdc_chassis_lcd_info_ret_block {
+ unsigned long model:16; /* DISPLAY_MODEL_XXXX */
+ unsigned long lcd_width:16; /* width of the LCD in chars (DISPLAY_MODEL_LCD only) */
+ unsigned long lcd_cmd_reg_addr; /* ptr to LCD cmd-register & data ptr for LED */
+ unsigned long lcd_data_reg_addr; /* ptr to LCD data-register (LCD only) */
+ unsigned int min_cmd_delay; /* delay in uS after cmd-write (LCD only) */
+ unsigned char reset_cmd1; /* command #1 for writing LCD string (LCD only) */
+ unsigned char reset_cmd2; /* command #2 for writing LCD string (LCD only) */
+ unsigned char act_enable; /* 0 = no activity (LCD only) */
+ struct lcd_block heartbeat;
+ struct lcd_block disk_io;
+ struct lcd_block lan_rcv;
+ struct lcd_block lan_tx;
+ char _pad;
+};
+
+
+/* LCD_CMD and LCD_DATA for KittyHawk machines */
+#define KITTYHAWK_LCD_CMD F_EXTEND(0xf0190000UL) /* 64bit-ready */
+#define KITTYHAWK_LCD_DATA (KITTYHAWK_LCD_CMD+1)
+
+/* lcd_info is pre-initialized to the values needed to program KittyHawk LCD's
+ * HP seems to have used Sharp/Hitachi HD44780 LCDs most of the time. */
+static struct pdc_chassis_lcd_info_ret_block
+lcd_info __attribute__((aligned(8))) =
+{
+ .model = DISPLAY_MODEL_LCD,
+ .lcd_width = 16,
+ .lcd_cmd_reg_addr = KITTYHAWK_LCD_CMD,
+ .lcd_data_reg_addr = KITTYHAWK_LCD_DATA,
+ .min_cmd_delay = 40,
+ .reset_cmd1 = 0x80,
+ .reset_cmd2 = 0xc0,
+};
+
+
+/* direct access to some of the lcd_info variables */
+#define LCD_CMD_REG lcd_info.lcd_cmd_reg_addr
+#define LCD_DATA_REG lcd_info.lcd_data_reg_addr
+#define LED_DATA_REG lcd_info.lcd_cmd_reg_addr /* LASI & ASP only */
+
+
+/* ptr to LCD/LED-specific function */
+static void (*led_func_ptr) (unsigned char);
+
+#define LED_HASLCD 1
+#define LED_NOLCD 0
+#ifdef CONFIG_PROC_FS
+static int led_proc_read(char *page, char **start, off_t off, int count,
+ int *eof, void *data)
+{
+ char *out = page;
+ int len;
+
+ switch ((long)data)
+ {
+ case LED_NOLCD:
+ out += sprintf(out, "Heartbeat: %d\n", led_heartbeat);
+ out += sprintf(out, "Disk IO: %d\n", led_diskio);
+ out += sprintf(out, "LAN Rx/Tx: %d\n", led_lanrxtx);
+ break;
+ case LED_HASLCD:
+ out += sprintf(out, "%s\n", lcd_text);
+ break;
+ default:
+ *eof = 1;
+ return 0;
+ }
+
+ len = out - page - off;
+ if (len < count) {
+ *eof = 1;
+ if (len <= 0) return 0;
+ } else {
+ len = count;
+ }
+ *start = page + off;
+ return len;
+}
+
+static int led_proc_write(struct file *file, const char *buf,
+ unsigned long count, void *data)
+{
+ char *cur, lbuf[count + 1];
+ int d;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EACCES;
+
+ memset(lbuf, 0, count + 1);
+
+ if (copy_from_user(lbuf, buf, count))
+ return -EFAULT;
+
+ cur = lbuf;
+
+ /* skip initial spaces */
+ while (*cur && isspace(*cur))
+ {
+ cur++;
+ }
+
+ switch ((long)data)
+ {
+ case LED_NOLCD:
+ d = *cur++ - '0';
+ if (d != 0 && d != 1) goto parse_error;
+ led_heartbeat = d;
+
+ if (*cur++ != ' ') goto parse_error;
+
+ d = *cur++ - '0';
+ if (d != 0 && d != 1) goto parse_error;
+ led_diskio = d;
+
+ if (*cur++ != ' ') goto parse_error;
+
+ d = *cur++ - '0';
+ if (d != 0 && d != 1) goto parse_error;
+ led_lanrxtx = d;
+
+ break;
+ case LED_HASLCD:
+ if (*cur && cur[strlen(cur)-1] == '\n')
+ cur[strlen(cur)-1] = 0;
+ if (*cur == 0)
+ cur = lcd_text_default;
+ lcd_print(cur);
+ break;
+ default:
+ return 0;
+ }
+
+ return count;
+
+parse_error:
+ if ((long)data == LED_NOLCD)
+ printk(KERN_CRIT "Parse error: expect \"n n n\" (n == 0 or 1) for heartbeat,\ndisk io and lan tx/rx indicators\n");
+ return -EINVAL;
+}
+
+static int __init led_create_procfs(void)
+{
+ struct proc_dir_entry *proc_pdc_root = NULL;
+ struct proc_dir_entry *ent;
+
+ if (led_type == -1) return -1;
+
+ proc_pdc_root = proc_mkdir("pdc", 0);
+ if (!proc_pdc_root) return -1;
+ proc_pdc_root->owner = THIS_MODULE;
+ ent = create_proc_entry("led", S_IFREG|S_IRUGO|S_IWUSR, proc_pdc_root);
+ if (!ent) return -1;
+ ent->nlink = 1;
+ ent->data = (void *)LED_NOLCD; /* LED */
+ ent->read_proc = led_proc_read;
+ ent->write_proc = led_proc_write;
+ ent->owner = THIS_MODULE;
+
+ if (led_type == LED_HASLCD)
+ {
+ ent = create_proc_entry("lcd", S_IFREG|S_IRUGO|S_IWUSR, proc_pdc_root);
+ if (!ent) return -1;
+ ent->nlink = 1;
+ ent->data = (void *)LED_HASLCD; /* LCD */
+ ent->read_proc = led_proc_read;
+ ent->write_proc = led_proc_write;
+ ent->owner = THIS_MODULE;
+ }
+
+ return 0;
+}
+#endif
+
+/*
+ **
+ ** led_ASP_driver()
+ **
+ */
+#define LED_DATA 0x01 /* data to shift (0:on 1:off) */
+#define LED_STROBE 0x02 /* strobe to clock data */
+static void led_ASP_driver(unsigned char leds)
+{
+ int i;
+
+ leds = ~leds;
+ for (i = 0; i < 8; i++) {
+ unsigned char value;
+ value = (leds & 0x80) >> 7;
+ gsc_writeb( value, LED_DATA_REG );
+ gsc_writeb( value | LED_STROBE, LED_DATA_REG );
+ leds <<= 1;
+ }
+}
+
+
+/*
+ **
+ ** led_LASI_driver()
+ **
+ */
+static void led_LASI_driver(unsigned char leds)
+{
+ leds = ~leds;
+ gsc_writeb( leds, LED_DATA_REG );
+}
+
+
+/*
+ **
+ ** led_LCD_driver()
+ **
+ ** The logic of the LCD driver is, that we write at every scheduled call
+ ** only to one of LCD_CMD_REG _or_ LCD_DATA_REG - registers.
+ ** That way we don't need to let this tasklet busywait for min_cmd_delay
+ ** milliseconds.
+ **
+ ** TODO: check the value of "min_cmd_delay" against the value of HZ.
+ **
+ */
+static void led_LCD_driver(unsigned char leds)
+{
+ static int last_index; /* 0:heartbeat, 1:disk, 2:lan_in, 3:lan_out */
+ static int last_was_cmd;/* 0: CMD was written last, 1: DATA was last */
+ struct lcd_block *block_ptr;
+ int value;
+
+ switch (last_index) {
+ case 0: block_ptr = &lcd_info.heartbeat;
+ value = leds & LED_HEARTBEAT;
+ break;
+ case 1: block_ptr = &lcd_info.disk_io;
+ value = leds & LED_DISK_IO;
+ break;
+ case 2: block_ptr = &lcd_info.lan_rcv;
+ value = leds & LED_LAN_RCV;
+ break;
+ case 3: block_ptr = &lcd_info.lan_tx;
+ value = leds & LED_LAN_TX;
+ break;
+ default: /* should never happen: */
+ return;
+ }
+
+ if (last_was_cmd) {
+ /* write the value to the LCD data port */
+ gsc_writeb( value ? block_ptr->on : block_ptr->off, LCD_DATA_REG );
+ } else {
+ /* write the command-byte to the LCD command register */
+ gsc_writeb( block_ptr->command, LCD_CMD_REG );
+ }
+
+ /* now update the vars for the next interrupt iteration */
+ if (++last_was_cmd == 2) { /* switch between cmd & data */
+ last_was_cmd = 0;
+ if (++last_index == 4)
+ last_index = 0; /* switch back to heartbeat index */
+ }
+}
+
+
+/*
+ **
+ ** led_get_net_activity()
+ **
+ ** calculate if there was TX- or RX-troughput on the network interfaces
+ ** (analog to dev_get_info() from net/core/dev.c)
+ **
+ */
+static __inline__ int led_get_net_activity(void)
+{
+#ifndef CONFIG_NET
+ return 0;
+#else
+ static unsigned long rx_total_last, tx_total_last;
+ unsigned long rx_total, tx_total;
+ struct net_device *dev;
+ int retval;
+
+ rx_total = tx_total = 0;
+
+ /* we are running as tasklet, so locking dev_base
+ * for reading should be OK */
+ read_lock(&dev_base_lock);
+ for (dev = dev_base; dev; dev = dev->next) {
+ struct net_device_stats *stats;
+ struct in_device *in_dev = __in_dev_get(dev);
+ if (!in_dev || !in_dev->ifa_list)
+ continue;
+ if (LOOPBACK(in_dev->ifa_list->ifa_local))
+ continue;
+ if (!dev->get_stats)
+ continue;
+ stats = dev->get_stats(dev);
+ rx_total += stats->rx_packets;
+ tx_total += stats->tx_packets;
+ }
+ read_unlock(&dev_base_lock);
+
+ retval = 0;
+
+ if (rx_total != rx_total_last) {
+ rx_total_last = rx_total;
+ retval |= LED_LAN_RCV;
+ }
+
+ if (tx_total != tx_total_last) {
+ tx_total_last = tx_total;
+ retval |= LED_LAN_TX;
+ }
+
+ return retval;
+#endif
+}
+
+
+/*
+ **
+ ** led_get_diskio_activity()
+ **
+ ** calculate if there was disk-io in the system
+ **
+ */
+static __inline__ int led_get_diskio_activity(void)
+{
+ static unsigned long last_pgpgin, last_pgpgout;
+ struct page_state pgstat;
+ int changed;
+
+ get_full_page_state(&pgstat); /* get no of sectors in & out */
+
+ /* Just use a very simple calculation here. Do not care about overflow,
+ since we only want to know if there was activity or not. */
+ changed = (pgstat.pgpgin != last_pgpgin) || (pgstat.pgpgout != last_pgpgout);
+ last_pgpgin = pgstat.pgpgin;
+ last_pgpgout = pgstat.pgpgout;
+
+ return (changed ? LED_DISK_IO : 0);
+}
+
+
+
+/*
+ ** led_tasklet_func()
+ **
+ ** is scheduled at every timer interrupt from time.c and
+ ** updates the chassis LCD/LED
+
+ TODO:
+ - display load average (older machines like 715/64 have 4 "free" LED's for that)
+ - optimizations
+ */
+
+#define HEARTBEAT_LEN (HZ*6/100)
+#define HEARTBEAT_2ND_RANGE_START (HZ*22/100)
+#define HEARTBEAT_2ND_RANGE_END (HEARTBEAT_2ND_RANGE_START + HEARTBEAT_LEN)
+
+#define NORMALIZED_COUNT(count) (count/(HZ/100))
+
+static void led_tasklet_func(unsigned long unused)
+{
+ static unsigned char lastleds;
+ unsigned char currentleds; /* stores current value of the LEDs */
+ static unsigned long count; /* static incremented value, not wrapped */
+ static unsigned long count_HZ; /* counter in range 0..HZ */
+
+ /* exit if not initialized */
+ if (!led_func_ptr)
+ return;
+
+ /* increment the local counters */
+ ++count;
+ if (++count_HZ == HZ)
+ count_HZ = 0;
+
+ currentleds = lastleds;
+
+ if (led_heartbeat)
+ {
+ /* flash heartbeat-LED like a real heart (2 x short then a long delay) */
+ if (count_HZ<HEARTBEAT_LEN ||
+ (count_HZ>=HEARTBEAT_2ND_RANGE_START && count_HZ<HEARTBEAT_2ND_RANGE_END))
+ currentleds |= LED_HEARTBEAT;
+ else
+ currentleds &= ~LED_HEARTBEAT;
+ }
+
+ /* look for network activity and flash LEDs respectively */
+ if (led_lanrxtx && ((NORMALIZED_COUNT(count)+(8/2)) & 7) == 0)
+ {
+ currentleds &= ~(LED_LAN_RCV | LED_LAN_TX);
+ currentleds |= led_get_net_activity();
+ }
+
+ /* avoid to calculate diskio-stats at same irq as netio-stats */
+ if (led_diskio && (NORMALIZED_COUNT(count) & 7) == 0)
+ {
+ currentleds &= ~LED_DISK_IO;
+ currentleds |= led_get_diskio_activity();
+ }
+
+ /* blink all LEDs twice a second if we got an Oops (HPMC) */
+ if (oops_in_progress) {
+ currentleds = (count_HZ<=(HZ/2)) ? 0 : 0xff;
+ }
+
+ /* update the LCD/LEDs */
+ if (currentleds != lastleds) {
+ led_func_ptr(currentleds);
+ lastleds = currentleds;
+ }
+}
+
+/* main led tasklet struct (scheduled from time.c) */
+DECLARE_TASKLET_DISABLED(led_tasklet, led_tasklet_func, 0);
+
+
+/*
+ ** led_halt()
+ **
+ ** called by the reboot notifier chain at shutdown and stops all
+ ** LED/LCD activities.
+ **
+ */
+
+static int led_halt(struct notifier_block *, unsigned long, void *);
+
+static struct notifier_block led_notifier = {
+ .notifier_call = led_halt,
+};
+
+static int led_halt(struct notifier_block *nb, unsigned long event, void *buf)
+{
+ char *txt;
+
+ switch (event) {
+ case SYS_RESTART: txt = "SYSTEM RESTART";
+ break;
+ case SYS_HALT: txt = "SYSTEM HALT";
+ break;
+ case SYS_POWER_OFF: txt = "SYSTEM POWER OFF";
+ break;
+ default: return NOTIFY_DONE;
+ }
+
+ /* completely stop the LED/LCD tasklet */
+ tasklet_disable(&led_tasklet);
+
+ if (lcd_info.model == DISPLAY_MODEL_LCD)
+ lcd_print(txt);
+ else
+ if (led_func_ptr)
+ led_func_ptr(0xff); /* turn all LEDs ON */
+
+ unregister_reboot_notifier(&led_notifier);
+ return NOTIFY_OK;
+}
+
+/*
+ ** register_led_driver()
+ **
+ ** registers an external LED or LCD for usage by this driver.
+ ** currently only LCD-, LASI- and ASP-style LCD/LED's are supported.
+ **
+ */
+
+int __init register_led_driver(int model, unsigned long cmd_reg, unsigned long data_reg)
+{
+ static int initialized;
+
+ if (initialized || !data_reg)
+ return 1;
+
+ lcd_info.model = model; /* store the values */
+ LCD_CMD_REG = (cmd_reg == LED_CMD_REG_NONE) ? 0 : cmd_reg;
+
+ switch (lcd_info.model) {
+ case DISPLAY_MODEL_LCD:
+ LCD_DATA_REG = data_reg;
+ printk(KERN_INFO "LCD display at %lx,%lx registered\n",
+ LCD_CMD_REG , LCD_DATA_REG);
+ led_func_ptr = led_LCD_driver;
+ lcd_print( lcd_text_default );
+ led_type = LED_HASLCD;
+ break;
+
+ case DISPLAY_MODEL_LASI:
+ LED_DATA_REG = data_reg;
+ led_func_ptr = led_LASI_driver;
+ printk(KERN_INFO "LED display at %lx registered\n", LED_DATA_REG);
+ led_type = LED_NOLCD;
+ break;
+
+ case DISPLAY_MODEL_OLD_ASP:
+ LED_DATA_REG = data_reg;
+ led_func_ptr = led_ASP_driver;
+ printk(KERN_INFO "LED (ASP-style) display at %lx registered\n",
+ LED_DATA_REG);
+ led_type = LED_NOLCD;
+ break;
+
+ default:
+ printk(KERN_ERR "%s: Wrong LCD/LED model %d !\n",
+ __FUNCTION__, lcd_info.model);
+ return 1;
+ }
+
+ /* mark the LCD/LED driver now as initialized and
+ * register to the reboot notifier chain */
+ initialized++;
+ register_reboot_notifier(&led_notifier);
+
+ /* start the led tasklet for the first time */
+ tasklet_enable(&led_tasklet);
+
+ return 0;
+}
+
+/*
+ ** register_led_regions()
+ **
+ ** register_led_regions() registers the LCD/LED regions for /procfs.
+ ** At bootup - where the initialisation of the LCD/LED normally happens -
+ ** not all internal structures of request_region() are properly set up,
+ ** so that we delay the led-registration until after busdevices_init()
+ ** has been executed.
+ **
+ */
+
+void __init register_led_regions(void)
+{
+ switch (lcd_info.model) {
+ case DISPLAY_MODEL_LCD:
+ request_mem_region((unsigned long)LCD_CMD_REG, 1, "lcd_cmd");
+ request_mem_region((unsigned long)LCD_DATA_REG, 1, "lcd_data");
+ break;
+ case DISPLAY_MODEL_LASI:
+ case DISPLAY_MODEL_OLD_ASP:
+ request_mem_region((unsigned long)LED_DATA_REG, 1, "led_data");
+ break;
+ }
+}
+
+
+/*
+ **
+ ** lcd_print()
+ **
+ ** Displays the given string on the LCD-Display of newer machines.
+ ** lcd_print() disables the timer-based led tasklet during its
+ ** execution and enables it afterwards again.
+ **
+ */
+int lcd_print( char *str )
+{
+ int i;
+
+ if (!led_func_ptr || lcd_info.model != DISPLAY_MODEL_LCD)
+ return 0;
+
+ /* temporarily disable the led tasklet */
+ tasklet_disable(&led_tasklet);
+
+ /* copy display string to buffer for procfs */
+ strlcpy(lcd_text, str, sizeof(lcd_text));
+
+ /* Set LCD Cursor to 1st character */
+ gsc_writeb(lcd_info.reset_cmd1, LCD_CMD_REG);
+ udelay(lcd_info.min_cmd_delay);
+
+ /* Print the string */
+ for (i=0; i < lcd_info.lcd_width; i++) {
+ if (str && *str)
+ gsc_writeb(*str++, LCD_DATA_REG);
+ else
+ gsc_writeb(' ', LCD_DATA_REG);
+ udelay(lcd_info.min_cmd_delay);
+ }
+
+ /* re-enable the led tasklet */
+ tasklet_enable(&led_tasklet);
+
+ return lcd_info.lcd_width;
+}
+
+/*
+ ** led_init()
+ **
+ ** led_init() is called very early in the bootup-process from setup.c
+ ** and asks the PDC for an usable chassis LCD or LED.
+ ** If the PDC doesn't return any info, then the LED
+ ** is detected by lasi.c or asp.c and registered with the
+ ** above functions lasi_led_init() or asp_led_init().
+ ** KittyHawk machines have often a buggy PDC, so that
+ ** we explicitly check for those machines here.
+ */
+
+int __init led_init(void)
+{
+ struct pdc_chassis_info chassis_info;
+ int ret;
+
+ snprintf(lcd_text_default, sizeof(lcd_text_default),
+ "Linux %s", system_utsname.release);
+
+ /* Work around the buggy PDC of KittyHawk-machines */
+ switch (CPU_HVERSION) {
+ case 0x580: /* KittyHawk DC2-100 (K100) */
+ case 0x581: /* KittyHawk DC3-120 (K210) */
+ case 0x582: /* KittyHawk DC3 100 (K400) */
+ case 0x583: /* KittyHawk DC3 120 (K410) */
+ case 0x58B: /* KittyHawk DC2 100 (K200) */
+ printk(KERN_INFO "%s: KittyHawk-Machine (hversion 0x%x) found, "
+ "LED detection skipped.\n", __FILE__, CPU_HVERSION);
+ goto found; /* use the preinitialized values of lcd_info */
+ }
+
+ /* initialize the struct, so that we can check for valid return values */
+ lcd_info.model = DISPLAY_MODEL_NONE;
+ chassis_info.actcnt = chassis_info.maxcnt = 0;
+
+ ret = pdc_chassis_info(&chassis_info, &lcd_info, sizeof(lcd_info));
+ if (ret == PDC_OK) {
+ DPRINTK((KERN_INFO "%s: chassis info: model=%d (%s), "
+ "lcd_width=%d, cmd_delay=%u,\n"
+ "%s: sizecnt=%d, actcnt=%ld, maxcnt=%ld\n",
+ __FILE__, lcd_info.model,
+ (lcd_info.model==DISPLAY_MODEL_LCD) ? "LCD" :
+ (lcd_info.model==DISPLAY_MODEL_LASI) ? "LED" : "unknown",
+ lcd_info.lcd_width, lcd_info.min_cmd_delay,
+ __FILE__, sizeof(lcd_info),
+ chassis_info.actcnt, chassis_info.maxcnt));
+ DPRINTK((KERN_INFO "%s: cmd=%p, data=%p, reset1=%x, reset2=%x, act_enable=%d\n",
+ __FILE__, lcd_info.lcd_cmd_reg_addr,
+ lcd_info.lcd_data_reg_addr, lcd_info.reset_cmd1,
+ lcd_info.reset_cmd2, lcd_info.act_enable ));
+
+ /* check the results. Some machines have a buggy PDC */
+ if (chassis_info.actcnt <= 0 || chassis_info.actcnt != chassis_info.maxcnt)
+ goto not_found;
+
+ switch (lcd_info.model) {
+ case DISPLAY_MODEL_LCD: /* LCD display */
+ if (chassis_info.actcnt <
+ offsetof(struct pdc_chassis_lcd_info_ret_block, _pad)-1)
+ goto not_found;
+ if (!lcd_info.act_enable) {
+ DPRINTK((KERN_INFO "PDC prohibited usage of the LCD.\n"));
+ goto not_found;
+ }
+ break;
+
+ case DISPLAY_MODEL_NONE: /* no LED or LCD available */
+ printk(KERN_INFO "PDC reported no LCD or LED.\n");
+ goto not_found;
+
+ case DISPLAY_MODEL_LASI: /* Lasi style 8 bit LED display */
+ if (chassis_info.actcnt != 8 && chassis_info.actcnt != 32)
+ goto not_found;
+ break;
+
+ default:
+ printk(KERN_WARNING "PDC reported unknown LCD/LED model %d\n",
+ lcd_info.model);
+ goto not_found;
+ } /* switch() */
+
+found:
+ /* register the LCD/LED driver */
+ register_led_driver(lcd_info.model, LCD_CMD_REG, LCD_DATA_REG);
+ return 0;
+
+ } else { /* if() */
+ DPRINTK((KERN_INFO "pdc_chassis_info call failed with retval = %d\n", ret));
+ }
+
+not_found:
+ lcd_info.model = DISPLAY_MODEL_NONE;
+ return 1;
+}
+
+#ifdef CONFIG_PROC_FS
+module_init(led_create_procfs)
+#endif
diff --git a/drivers/parisc/pdc_stable.c b/drivers/parisc/pdc_stable.c
new file mode 100644
index 000000000000..67c8f3b44848
--- /dev/null
+++ b/drivers/parisc/pdc_stable.c
@@ -0,0 +1,735 @@
+/*
+ * Interfaces to retrieve and set PDC Stable options (firmware)
+ *
+ * Copyright (C) 2005 Thibaut VARENE <varenet@parisc-linux.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ *
+ * DEV NOTE: the PDC Procedures reference states that:
+ * "A minimum of 96 bytes of Stable Storage is required. Providing more than
+ * 96 bytes of Stable Storage is optional [...]. Failure to provide the
+ * optional locations from 96 to 192 results in the loss of certain
+ * functionality during boot."
+ *
+ * Since locations between 96 and 192 are the various paths, most (if not
+ * all) PA-RISC machines should have them. Anyway, for safety reasons, the
+ * following code can deal with only 96 bytes of Stable Storage, and all
+ * sizes between 96 and 192 bytes (provided they are multiple of struct
+ * device_path size, eg: 128, 160 and 192) to provide full information.
+ * The code makes no use of data above 192 bytes. One last word: there's one
+ * path we can always count on: the primary path.
+ */
+
+#undef PDCS_DEBUG
+#ifdef PDCS_DEBUG
+#define DPRINTK(fmt, args...) printk(KERN_DEBUG fmt, ## args)
+#else
+#define DPRINTK(fmt, args...)
+#endif
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/sched.h> /* for capable() */
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/ctype.h>
+#include <linux/sysfs.h>
+#include <linux/kobject.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+
+#include <asm/pdc.h>
+#include <asm/page.h>
+#include <asm/uaccess.h>
+#include <asm/hardware.h>
+
+#define PDCS_VERSION "0.09"
+
+#define PDCS_ADDR_PPRI 0x00
+#define PDCS_ADDR_OSID 0x40
+#define PDCS_ADDR_FSIZ 0x5C
+#define PDCS_ADDR_PCON 0x60
+#define PDCS_ADDR_PALT 0x80
+#define PDCS_ADDR_PKBD 0xA0
+
+MODULE_AUTHOR("Thibaut VARENE <varenet@parisc-linux.org>");
+MODULE_DESCRIPTION("sysfs interface to HP PDC Stable Storage data");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(PDCS_VERSION);
+
+static unsigned long pdcs_size = 0;
+
+/* This struct defines what we need to deal with a parisc pdc path entry */
+struct pdcspath_entry {
+ short ready; /* entry record is valid if != 0 */
+ unsigned long addr; /* entry address in stable storage */
+ char *name; /* entry name */
+ struct device_path devpath; /* device path in parisc representation */
+ struct device *dev; /* corresponding device */
+ struct kobject kobj;
+};
+
+struct pdcspath_attribute {
+ struct attribute attr;
+ ssize_t (*show)(struct pdcspath_entry *entry, char *buf);
+ ssize_t (*store)(struct pdcspath_entry *entry, const char *buf, size_t count);
+};
+
+#define PDCSPATH_ENTRY(_addr, _name) \
+struct pdcspath_entry pdcspath_entry_##_name = { \
+ .ready = 0, \
+ .addr = _addr, \
+ .name = __stringify(_name), \
+};
+
+#define PDCS_ATTR(_name, _mode, _show, _store) \
+struct subsys_attribute pdcs_attr_##_name = { \
+ .attr = {.name = __stringify(_name), .mode = _mode, .owner = THIS_MODULE}, \
+ .show = _show, \
+ .store = _store, \
+};
+
+#define PATHS_ATTR(_name, _mode, _show, _store) \
+struct pdcspath_attribute paths_attr_##_name = { \
+ .attr = {.name = __stringify(_name), .mode = _mode, .owner = THIS_MODULE}, \
+ .show = _show, \
+ .store = _store, \
+};
+
+#define to_pdcspath_attribute(_attr) container_of(_attr, struct pdcspath_attribute, attr)
+#define to_pdcspath_entry(obj) container_of(obj, struct pdcspath_entry, kobj)
+
+/**
+ * pdcspath_fetch - This function populates the path entry structs.
+ * @entry: A pointer to an allocated pdcspath_entry.
+ *
+ * The general idea is that you don't read from the Stable Storage every time
+ * you access the files provided by the facilites. We store a copy of the
+ * content of the stable storage WRT various paths in these structs. We read
+ * these structs when reading the files, and we will write to these structs when
+ * writing to the files, and only then write them back to the Stable Storage.
+ */
+static int
+pdcspath_fetch(struct pdcspath_entry *entry)
+{
+ struct device_path *devpath;
+
+ if (!entry)
+ return -EINVAL;
+
+ devpath = &entry->devpath;
+
+ DPRINTK("%s: fetch: 0x%p, 0x%p, addr: 0x%lx\n", __func__,
+ entry, devpath, entry->addr);
+
+ /* addr, devpath and count must be word aligned */
+ if (pdc_stable_read(entry->addr, devpath, sizeof(*devpath)) != PDC_OK)
+ return -EIO;
+
+ /* Find the matching device.
+ NOTE: hardware_path overlays with device_path, so the nice cast can
+ be used */
+ entry->dev = hwpath_to_device((struct hardware_path *)devpath);
+
+ entry->ready = 1;
+
+ DPRINTK("%s: device: 0x%p\n", __func__, entry->dev);
+
+ return 0;
+}
+
+/**
+ * pdcspath_store - This function writes a path to stable storage.
+ * @entry: A pointer to an allocated pdcspath_entry.
+ *
+ * It can be used in two ways: either by passing it a preset devpath struct
+ * containing an already computed hardware path, or by passing it a device
+ * pointer, from which it'll find out the corresponding hardware path.
+ * For now we do not handle the case where there's an error in writing to the
+ * Stable Storage area, so you'd better not mess up the data :P
+ */
+static int
+pdcspath_store(struct pdcspath_entry *entry)
+{
+ struct device_path *devpath;
+
+ if (!entry)
+ return -EINVAL;
+
+ devpath = &entry->devpath;
+
+ /* We expect the caller to set the ready flag to 0 if the hardware
+ path struct provided is invalid, so that we know we have to fill it.
+ First case, we don't have a preset hwpath... */
+ if (!entry->ready) {
+ /* ...but we have a device, map it */
+ if (entry->dev)
+ device_to_hwpath(entry->dev, (struct hardware_path *)devpath);
+ else
+ return -EINVAL;
+ }
+ /* else, we expect the provided hwpath to be valid. */
+
+ DPRINTK("%s: store: 0x%p, 0x%p, addr: 0x%lx\n", __func__,
+ entry, devpath, entry->addr);
+
+ /* addr, devpath and count must be word aligned */
+ if (pdc_stable_write(entry->addr, devpath, sizeof(*devpath)) != PDC_OK) {
+ printk(KERN_ERR "%s: an error occured when writing to PDC.\n"
+ "It is likely that the Stable Storage data has been corrupted.\n"
+ "Please check it carefully upon next reboot.\n", __func__);
+ return -EIO;
+ }
+
+ entry->ready = 1;
+
+ DPRINTK("%s: device: 0x%p\n", __func__, entry->dev);
+
+ return 0;
+}
+
+/**
+ * pdcspath_hwpath_read - This function handles hardware path pretty printing.
+ * @entry: An allocated and populated pdscpath_entry struct.
+ * @buf: The output buffer to write to.
+ *
+ * We will call this function to format the output of the hwpath attribute file.
+ */
+static ssize_t
+pdcspath_hwpath_read(struct pdcspath_entry *entry, char *buf)
+{
+ char *out = buf;
+ struct device_path *devpath;
+ unsigned short i;
+
+ if (!entry || !buf)
+ return -EINVAL;
+
+ devpath = &entry->devpath;
+
+ if (!entry->ready)
+ return -ENODATA;
+
+ for (i = 0; i < 6; i++) {
+ if (devpath->bc[i] >= 128)
+ continue;
+ out += sprintf(out, "%u/", (unsigned char)devpath->bc[i]);
+ }
+ out += sprintf(out, "%u\n", (unsigned char)devpath->mod);
+
+ return out - buf;
+}
+
+/**
+ * pdcspath_hwpath_write - This function handles hardware path modifying.
+ * @entry: An allocated and populated pdscpath_entry struct.
+ * @buf: The input buffer to read from.
+ * @count: The number of bytes to be read.
+ *
+ * We will call this function to change the current hardware path.
+ * Hardware paths are to be given '/'-delimited, without brackets.
+ * We take care to make sure that the provided path actually maps to an existing
+ * device, BUT nothing would prevent some foolish user to set the path to some
+ * PCI bridge or even a CPU...
+ * A better work around would be to make sure we are at the end of a device tree
+ * for instance, but it would be IMHO beyond the simple scope of that driver.
+ * The aim is to provide a facility. Data correctness is left to userland.
+ */
+static ssize_t
+pdcspath_hwpath_write(struct pdcspath_entry *entry, const char *buf, size_t count)
+{
+ struct hardware_path hwpath;
+ unsigned short i;
+ char in[count+1], *temp;
+ struct device *dev;
+
+ if (!entry || !buf || !count)
+ return -EINVAL;
+
+ /* We'll use a local copy of buf */
+ memset(in, 0, count+1);
+ strncpy(in, buf, count);
+
+ /* Let's clean up the target. 0xff is a blank pattern */
+ memset(&hwpath, 0xff, sizeof(hwpath));
+
+ /* First, pick the mod field (the last one of the input string) */
+ if (!(temp = strrchr(in, '/')))
+ return -EINVAL;
+
+ hwpath.mod = simple_strtoul(temp+1, NULL, 10);
+ in[temp-in] = '\0'; /* truncate the remaining string. just precaution */
+ DPRINTK("%s: mod: %d\n", __func__, hwpath.mod);
+
+ /* Then, loop for each delimiter, making sure we don't have too many.
+ we write the bc fields in a down-top way. No matter what, we stop
+ before writing the last field. If there are too many fields anyway,
+ then the user is a moron and it'll be caught up later when we'll
+ check the consistency of the given hwpath. */
+ for (i=5; ((temp = strrchr(in, '/'))) && (temp-in > 0) && (likely(i)); i--) {
+ hwpath.bc[i] = simple_strtoul(temp+1, NULL, 10);
+ in[temp-in] = '\0';
+ DPRINTK("%s: bc[%d]: %d\n", __func__, i, hwpath.bc[i]);
+ }
+
+ /* Store the final field */
+ hwpath.bc[i] = simple_strtoul(in, NULL, 10);
+ DPRINTK("%s: bc[%d]: %d\n", __func__, i, hwpath.bc[i]);
+
+ /* Now we check that the user isn't trying to lure us */
+ if (!(dev = hwpath_to_device((struct hardware_path *)&hwpath))) {
+ printk(KERN_WARNING "%s: attempt to set invalid \"%s\" "
+ "hardware path: %s\n", __func__, entry->name, buf);
+ return -EINVAL;
+ }
+
+ /* So far so good, let's get in deep */
+ entry->ready = 0;
+ entry->dev = dev;
+
+ /* Now, dive in. Write back to the hardware */
+ WARN_ON(pdcspath_store(entry)); /* this warn should *NEVER* happen */
+
+ /* Update the symlink to the real device */
+ sysfs_remove_link(&entry->kobj, "device");
+ sysfs_create_link(&entry->kobj, &entry->dev->kobj, "device");
+
+ printk(KERN_INFO "PDC Stable Storage: changed \"%s\" path to \"%s\"\n",
+ entry->name, buf);
+
+ return count;
+}
+
+/**
+ * pdcspath_layer_read - Extended layer (eg. SCSI ids) pretty printing.
+ * @entry: An allocated and populated pdscpath_entry struct.
+ * @buf: The output buffer to write to.
+ *
+ * We will call this function to format the output of the layer attribute file.
+ */
+static ssize_t
+pdcspath_layer_read(struct pdcspath_entry *entry, char *buf)
+{
+ char *out = buf;
+ struct device_path *devpath;
+ unsigned short i;
+
+ if (!entry || !buf)
+ return -EINVAL;
+
+ devpath = &entry->devpath;
+
+ if (!entry->ready)
+ return -ENODATA;
+
+ for (i = 0; devpath->layers[i] && (likely(i < 6)); i++)
+ out += sprintf(out, "%u ", devpath->layers[i]);
+
+ out += sprintf(out, "\n");
+
+ return out - buf;
+}
+
+/**
+ * pdcspath_layer_write - This function handles extended layer modifying.
+ * @entry: An allocated and populated pdscpath_entry struct.
+ * @buf: The input buffer to read from.
+ * @count: The number of bytes to be read.
+ *
+ * We will call this function to change the current layer value.
+ * Layers are to be given '.'-delimited, without brackets.
+ * XXX beware we are far less checky WRT input data provided than for hwpath.
+ * Potential harm can be done, since there's no way to check the validity of
+ * the layer fields.
+ */
+static ssize_t
+pdcspath_layer_write(struct pdcspath_entry *entry, const char *buf, size_t count)
+{
+ unsigned int layers[6]; /* device-specific info (ctlr#, unit#, ...) */
+ unsigned short i;
+ char in[count+1], *temp;
+
+ if (!entry || !buf || !count)
+ return -EINVAL;
+
+ /* We'll use a local copy of buf */
+ memset(in, 0, count+1);
+ strncpy(in, buf, count);
+
+ /* Let's clean up the target. 0 is a blank pattern */
+ memset(&layers, 0, sizeof(layers));
+
+ /* First, pick the first layer */
+ if (unlikely(!isdigit(*in)))
+ return -EINVAL;
+ layers[0] = simple_strtoul(in, NULL, 10);
+ DPRINTK("%s: layer[0]: %d\n", __func__, layers[0]);
+
+ temp = in;
+ for (i=1; ((temp = strchr(temp, '.'))) && (likely(i<6)); i++) {
+ if (unlikely(!isdigit(*(++temp))))
+ return -EINVAL;
+ layers[i] = simple_strtoul(temp, NULL, 10);
+ DPRINTK("%s: layer[%d]: %d\n", __func__, i, layers[i]);
+ }
+
+ /* So far so good, let's get in deep */
+
+ /* First, overwrite the current layers with the new ones, not touching
+ the hardware path. */
+ memcpy(&entry->devpath.layers, &layers, sizeof(layers));
+
+ /* Now, dive in. Write back to the hardware */
+ WARN_ON(pdcspath_store(entry)); /* this warn should *NEVER* happen */
+
+ printk(KERN_INFO "PDC Stable Storage: changed \"%s\" layers to \"%s\"\n",
+ entry->name, buf);
+
+ return count;
+}
+
+/**
+ * pdcspath_attr_show - Generic read function call wrapper.
+ * @kobj: The kobject to get info from.
+ * @attr: The attribute looked upon.
+ * @buf: The output buffer.
+ */
+static ssize_t
+pdcspath_attr_show(struct kobject *kobj, struct attribute *attr, char *buf)
+{
+ struct pdcspath_entry *entry = to_pdcspath_entry(kobj);
+ struct pdcspath_attribute *pdcs_attr = to_pdcspath_attribute(attr);
+ ssize_t ret = 0;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EACCES;
+
+ if (pdcs_attr->show)
+ ret = pdcs_attr->show(entry, buf);
+
+ return ret;
+}
+
+/**
+ * pdcspath_attr_store - Generic write function call wrapper.
+ * @kobj: The kobject to write info to.
+ * @attr: The attribute to be modified.
+ * @buf: The input buffer.
+ * @count: The size of the buffer.
+ */
+static ssize_t
+pdcspath_attr_store(struct kobject *kobj, struct attribute *attr,
+ const char *buf, size_t count)
+{
+ struct pdcspath_entry *entry = to_pdcspath_entry(kobj);
+ struct pdcspath_attribute *pdcs_attr = to_pdcspath_attribute(attr);
+ ssize_t ret = 0;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EACCES;
+
+ if (pdcs_attr->store)
+ ret = pdcs_attr->store(entry, buf, count);
+
+ return ret;
+}
+
+static struct sysfs_ops pdcspath_attr_ops = {
+ .show = pdcspath_attr_show,
+ .store = pdcspath_attr_store,
+};
+
+/* These are the two attributes of any PDC path. */
+static PATHS_ATTR(hwpath, 0600, pdcspath_hwpath_read, pdcspath_hwpath_write);
+static PATHS_ATTR(layer, 0600, pdcspath_layer_read, pdcspath_layer_write);
+
+static struct attribute *paths_subsys_attrs[] = {
+ &paths_attr_hwpath.attr,
+ &paths_attr_layer.attr,
+ NULL,
+};
+
+/* Specific kobject type for our PDC paths */
+static struct kobj_type ktype_pdcspath = {
+ .sysfs_ops = &pdcspath_attr_ops,
+ .default_attrs = paths_subsys_attrs,
+};
+
+/* We hard define the 4 types of path we expect to find */
+static PDCSPATH_ENTRY(PDCS_ADDR_PPRI, primary);
+static PDCSPATH_ENTRY(PDCS_ADDR_PCON, console);
+static PDCSPATH_ENTRY(PDCS_ADDR_PALT, alternative);
+static PDCSPATH_ENTRY(PDCS_ADDR_PKBD, keyboard);
+
+/* An array containing all PDC paths we will deal with */
+static struct pdcspath_entry *pdcspath_entries[] = {
+ &pdcspath_entry_primary,
+ &pdcspath_entry_alternative,
+ &pdcspath_entry_console,
+ &pdcspath_entry_keyboard,
+ NULL,
+};
+
+/**
+ * pdcs_info_read - Pretty printing of the remaining useful data.
+ * @entry: An allocated and populated subsytem struct. We don't use it tho.
+ * @buf: The output buffer to write to.
+ *
+ * We will call this function to format the output of the 'info' attribute file.
+ * Please refer to PDC Procedures documentation, section PDC_STABLE to get a
+ * better insight of what we're doing here.
+ */
+static ssize_t
+pdcs_info_read(struct subsystem *entry, char *buf)
+{
+ char *out = buf;
+ __u32 result;
+ struct device_path devpath;
+ char *tmpstr = NULL;
+
+ if (!entry || !buf)
+ return -EINVAL;
+
+ /* show the size of the stable storage */
+ out += sprintf(out, "Stable Storage size: %ld bytes\n", pdcs_size);
+
+ /* deal with flags */
+ if (pdc_stable_read(PDCS_ADDR_PPRI, &devpath, sizeof(devpath)) != PDC_OK)
+ return -EIO;
+
+ out += sprintf(out, "Autoboot: %s\n", (devpath.flags & PF_AUTOBOOT) ? "On" : "Off");
+ out += sprintf(out, "Autosearch: %s\n", (devpath.flags & PF_AUTOSEARCH) ? "On" : "Off");
+ out += sprintf(out, "Timer: %u s\n", (devpath.flags & PF_TIMER) ? (1 << (devpath.flags & PF_TIMER)) : 0);
+
+ /* get OSID */
+ if (pdc_stable_read(PDCS_ADDR_OSID, &result, sizeof(result)) != PDC_OK)
+ return -EIO;
+
+ /* the actual result is 16 bits away */
+ switch (result >> 16) {
+ case 0x0000: tmpstr = "No OS-dependent data"; break;
+ case 0x0001: tmpstr = "HP-UX dependent data"; break;
+ case 0x0002: tmpstr = "MPE-iX dependent data"; break;
+ case 0x0003: tmpstr = "OSF dependent data"; break;
+ case 0x0004: tmpstr = "HP-RT dependent data"; break;
+ case 0x0005: tmpstr = "Novell Netware dependent data"; break;
+ default: tmpstr = "Unknown"; break;
+ }
+ out += sprintf(out, "OS ID: %s (0x%.4x)\n", tmpstr, (result >> 16));
+
+ /* get fast-size */
+ if (pdc_stable_read(PDCS_ADDR_FSIZ, &result, sizeof(result)) != PDC_OK)
+ return -EIO;
+
+ out += sprintf(out, "Memory tested: ");
+ if ((result & 0x0F) < 0x0E)
+ out += sprintf(out, "%.3f MB", 0.256*(1<<(result & 0x0F)));
+ else
+ out += sprintf(out, "All");
+ out += sprintf(out, "\n");
+
+ return out - buf;
+}
+
+/**
+ * pdcs_info_write - This function handles boot flag modifying.
+ * @entry: An allocated and populated subsytem struct. We don't use it tho.
+ * @buf: The input buffer to read from.
+ * @count: The number of bytes to be read.
+ *
+ * We will call this function to change the current boot flags.
+ * We expect a precise syntax:
+ * \"n n\" (n == 0 or 1) to toggle respectively AutoBoot and AutoSearch
+ *
+ * As of now there is no incentive on my side to provide more "knobs" to that
+ * interface, since modifying the rest of the data is pretty meaningless when
+ * the machine is running and for the expected use of that facility, such as
+ * PALO setting up the boot disk when installing a Linux distribution...
+ */
+static ssize_t
+pdcs_info_write(struct subsystem *entry, const char *buf, size_t count)
+{
+ struct pdcspath_entry *pathentry;
+ unsigned char flags;
+ char in[count+1], *temp;
+ char c;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EACCES;
+
+ if (!entry || !buf || !count)
+ return -EINVAL;
+
+ /* We'll use a local copy of buf */
+ memset(in, 0, count+1);
+ strncpy(in, buf, count);
+
+ /* Current flags are stored in primary boot path entry */
+ pathentry = &pdcspath_entry_primary;
+
+ /* Be nice to the existing flag record */
+ flags = pathentry->devpath.flags;
+
+ DPRINTK("%s: flags before: 0x%X\n", __func__, flags);
+
+ temp = in;
+
+ while (*temp && isspace(*temp))
+ temp++;
+
+ c = *temp++ - '0';
+ if ((c != 0) && (c != 1))
+ goto parse_error;
+ if (c == 0)
+ flags &= ~PF_AUTOBOOT;
+ else
+ flags |= PF_AUTOBOOT;
+
+ if (*temp++ != ' ')
+ goto parse_error;
+
+ c = *temp++ - '0';
+ if ((c != 0) && (c != 1))
+ goto parse_error;
+ if (c == 0)
+ flags &= ~PF_AUTOSEARCH;
+ else
+ flags |= PF_AUTOSEARCH;
+
+ DPRINTK("%s: flags after: 0x%X\n", __func__, flags);
+
+ /* So far so good, let's get in deep */
+
+ /* Change the path entry flags first */
+ pathentry->devpath.flags = flags;
+
+ /* Now, dive in. Write back to the hardware */
+ WARN_ON(pdcspath_store(pathentry)); /* this warn should *NEVER* happen */
+
+ printk(KERN_INFO "PDC Stable Storage: changed flags to \"%s\"\n", buf);
+
+ return count;
+
+parse_error:
+ printk(KERN_WARNING "%s: Parse error: expect \"n n\" (n == 0 or 1) for AB and AS\n", __func__);
+ return -EINVAL;
+}
+
+/* The last attribute (the 'root' one actually) with all remaining data. */
+static PDCS_ATTR(info, 0600, pdcs_info_read, pdcs_info_write);
+
+static struct subsys_attribute *pdcs_subsys_attrs[] = {
+ &pdcs_attr_info,
+ NULL, /* maybe more in the future? */
+};
+
+static decl_subsys(paths, &ktype_pdcspath, NULL);
+static decl_subsys(pdc, NULL, NULL);
+
+/**
+ * pdcs_register_pathentries - Prepares path entries kobjects for sysfs usage.
+ *
+ * It creates kobjects corresponding to each path entry with nice sysfs
+ * links to the real device. This is where the magic takes place: when
+ * registering the subsystem attributes during module init, each kobject hereby
+ * created will show in the sysfs tree as a folder containing files as defined
+ * by path_subsys_attr[].
+ */
+static inline int __init
+pdcs_register_pathentries(void)
+{
+ unsigned short i;
+ struct pdcspath_entry *entry;
+
+ for (i = 0; (entry = pdcspath_entries[i]); i++) {
+ if (pdcspath_fetch(entry) < 0)
+ continue;
+
+ kobject_set_name(&entry->kobj, "%s", entry->name);
+ kobj_set_kset_s(entry, paths_subsys);
+ kobject_register(&entry->kobj);
+
+ if (!entry->dev)
+ continue;
+
+ /* Add a nice symlink to the real device */
+ sysfs_create_link(&entry->kobj, &entry->dev->kobj, "device");
+ }
+
+ return 0;
+}
+
+/**
+ * pdcs_unregister_pathentries - Routine called when unregistering the module.
+ */
+static inline void __exit
+pdcs_unregister_pathentries(void)
+{
+ unsigned short i;
+ struct pdcspath_entry *entry;
+
+ for (i = 0; (entry = pdcspath_entries[i]); i++)
+ if (entry->ready)
+ kobject_unregister(&entry->kobj);
+}
+
+/*
+ * For now we register the pdc subsystem with the firmware subsystem
+ * and the paths subsystem with the pdc subsystem
+ */
+static int __init
+pdc_stable_init(void)
+{
+ struct subsys_attribute *attr;
+ int i, rc = 0, error = 0;
+
+ /* find the size of the stable storage */
+ if (pdc_stable_get_size(&pdcs_size) != PDC_OK)
+ return -ENODEV;
+
+ printk(KERN_INFO "PDC Stable Storage facility v%s\n", PDCS_VERSION);
+
+ /* For now we'll register the pdc subsys within this driver */
+ if ((rc = firmware_register(&pdc_subsys)))
+ return rc;
+
+ /* Don't forget the info entry */
+ for (i = 0; (attr = pdcs_subsys_attrs[i]) && !error; i++)
+ if (attr->show)
+ error = subsys_create_file(&pdc_subsys, attr);
+
+ /* register the paths subsys as a subsystem of pdc subsys */
+ kset_set_kset_s(&paths_subsys, pdc_subsys);
+ subsystem_register(&paths_subsys);
+
+ /* now we create all "files" for the paths subsys */
+ pdcs_register_pathentries();
+
+ return 0;
+}
+
+static void __exit
+pdc_stable_exit(void)
+{
+ pdcs_unregister_pathentries();
+ subsystem_unregister(&paths_subsys);
+
+ firmware_unregister(&pdc_subsys);
+}
+
+
+module_init(pdc_stable_init);
+module_exit(pdc_stable_exit);
diff --git a/drivers/parisc/power.c b/drivers/parisc/power.c
new file mode 100644
index 000000000000..ff75e9296df9
--- /dev/null
+++ b/drivers/parisc/power.c
@@ -0,0 +1,278 @@
+/*
+ * linux/arch/parisc/kernel/power.c
+ * HP PARISC soft power switch support driver
+ *
+ * Copyright (c) 2001-2002 Helge Deller <deller@gmx.de>
+ * All rights reserved.
+ *
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions, and the following disclaimer,
+ * without modification.
+ * 2. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL").
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ *
+ *
+ *
+ * HINT:
+ * Support of the soft power switch button may be enabled or disabled at
+ * runtime through the "/proc/sys/kernel/power" procfs entry.
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/notifier.h>
+#include <linux/reboot.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/workqueue.h>
+
+#include <asm/pdc.h>
+#include <asm/io.h>
+#include <asm/led.h>
+#include <asm/uaccess.h>
+
+
+#ifdef DEBUG
+# define DPRINTK(x...) printk(x)
+#else
+# define DPRINTK(x...)
+#endif
+
+
+/* filename in /proc which can be used to enable/disable the power switch */
+#define SYSCTL_FILENAME "sys/kernel/power"
+
+
+#define DIAG_CODE(code) (0x14000000 + ((code)<<5))
+
+/* this will go to processor.h or any other place... */
+/* taken from PCXL ERS page 82 */
+#define MFCPU_X(rDiagReg, t_ch, t_th, code) \
+ (DIAG_CODE(code) + ((rDiagReg)<<21) + ((t_ch)<<16) + ((t_th)<<0) )
+
+#define MTCPU(dr, gr) MFCPU_X(dr, gr, 0, 0x12) /* move value of gr to dr[dr] */
+#define MFCPU_C(dr, gr) MFCPU_X(dr, gr, 0, 0x30) /* for dr0 and dr8 only ! */
+#define MFCPU_T(dr, gr) MFCPU_X(dr, 0, gr, 0xa0) /* all dr except dr0 and dr8 */
+
+#define __getDIAG(dr) ( { \
+ register unsigned long __res asm("r28");\
+ __asm__ __volatile__ ( \
+ ".word %1\n nop\n" : "=&r" (__res) : "i" (MFCPU_T(dr,28)) \
+ ); \
+ __res; \
+} )
+
+
+static void deferred_poweroff(void *dummy)
+{
+ extern int cad_pid; /* from kernel/sys.c */
+ if (kill_proc(cad_pid, SIGINT, 1)) {
+ /* just in case killing init process failed */
+ machine_power_off();
+ }
+}
+
+/*
+ * This function gets called from interrupt context.
+ * As it's called within an interrupt, it wouldn't sync if we don't
+ * use schedule_work().
+ */
+
+static DECLARE_WORK(poweroff_work, deferred_poweroff, NULL);
+
+static void poweroff(void)
+{
+ static int powering_off;
+
+ if (powering_off)
+ return;
+
+ powering_off++;
+ schedule_work(&poweroff_work);
+}
+
+
+/* local time-counter for shutdown */
+static int shutdown_timer;
+
+/* check, give feedback and start shutdown after one second */
+static void process_shutdown(void)
+{
+ if (shutdown_timer == 0)
+ DPRINTK(KERN_INFO "Shutdown requested...\n");
+
+ shutdown_timer++;
+
+ /* wait until the button was pressed for 1 second */
+ if (shutdown_timer == HZ) {
+#if defined (DEBUG) || defined(CONFIG_CHASSIS_LCD_LED)
+ static char msg[] = "Shutting down...";
+#endif
+ DPRINTK(KERN_INFO "%s\n", msg);
+ lcd_print(msg);
+ poweroff();
+ }
+}
+
+
+/* main power switch tasklet struct (scheduled from time.c) */
+DECLARE_TASKLET_DISABLED(power_tasklet, NULL, 0);
+
+/* soft power switch enabled/disabled */
+int pwrsw_enabled = 1;
+
+/*
+ * On gecko style machines (e.g. 712/xx and 715/xx)
+ * the power switch status is stored in Bit 0 ("the highest bit")
+ * of CPU diagnose register 25.
+ *
+ */
+static void gecko_tasklet_func(unsigned long unused)
+{
+ if (!pwrsw_enabled)
+ return;
+
+ if (__getDIAG(25) & 0x80000000) {
+ /* power switch button not pressed or released again */
+ /* Warning: Some machines do never reset this DIAG flag! */
+ shutdown_timer = 0;
+ } else {
+ process_shutdown();
+ }
+}
+
+
+
+/*
+ * Check the power switch status which is read from the
+ * real I/O location at soft_power_reg.
+ * Bit 31 ("the lowest bit) is the status of the power switch.
+ */
+
+static void polling_tasklet_func(unsigned long soft_power_reg)
+{
+ unsigned long current_status;
+
+ if (!pwrsw_enabled)
+ return;
+
+ current_status = gsc_readl(soft_power_reg);
+ if (current_status & 0x1) {
+ /* power switch button not pressed */
+ shutdown_timer = 0;
+ } else {
+ process_shutdown();
+ }
+}
+
+
+/*
+ * powerfail interruption handler (irq IRQ_FROM_REGION(CPU_IRQ_REGION)+2)
+ */
+#if 0
+static void powerfail_interrupt(int code, void *x, struct pt_regs *regs)
+{
+ printk(KERN_CRIT "POWERFAIL INTERRUPTION !\n");
+ poweroff();
+}
+#endif
+
+
+
+
+/* parisc_panic_event() is called by the panic handler.
+ * As soon as a panic occurs, our tasklets above will not be
+ * executed any longer. This function then re-enables the
+ * soft-power switch and allows the user to switch off the system
+ */
+static int parisc_panic_event(struct notifier_block *this,
+ unsigned long event, void *ptr)
+{
+ /* re-enable the soft-power switch */
+ pdc_soft_power_button(0);
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block parisc_panic_block = {
+ .notifier_call = parisc_panic_event,
+ .priority = INT_MAX,
+};
+
+
+static int __init power_init(void)
+{
+ unsigned long ret;
+ unsigned long soft_power_reg = 0;
+
+#if 0
+ request_irq( IRQ_FROM_REGION(CPU_IRQ_REGION)+2, &powerfail_interrupt,
+ 0, "powerfail", NULL);
+#endif
+
+ /* enable the soft power switch if possible */
+ ret = pdc_soft_power_info(&soft_power_reg);
+ if (ret == PDC_OK)
+ ret = pdc_soft_power_button(1);
+ if (ret != PDC_OK)
+ soft_power_reg = -1UL;
+
+ switch (soft_power_reg) {
+ case 0: printk(KERN_INFO "Gecko-style soft power switch enabled.\n");
+ power_tasklet.func = gecko_tasklet_func;
+ break;
+
+ case -1UL: printk(KERN_INFO "Soft power switch support not available.\n");
+ return -ENODEV;
+
+ default: printk(KERN_INFO "Soft power switch enabled, polling @ 0x%08lx.\n",
+ soft_power_reg);
+ power_tasklet.data = soft_power_reg;
+ power_tasklet.func = polling_tasklet_func;
+ }
+
+ /* Register a call for panic conditions. */
+ notifier_chain_register(&panic_notifier_list, &parisc_panic_block);
+
+ tasklet_enable(&power_tasklet);
+
+ return 0;
+}
+
+static void __exit power_exit(void)
+{
+ if (!power_tasklet.func)
+ return;
+
+ tasklet_disable(&power_tasklet);
+ notifier_chain_unregister(&panic_notifier_list, &parisc_panic_block);
+ power_tasklet.func = NULL;
+ pdc_soft_power_button(0);
+}
+
+module_init(power_init);
+module_exit(power_exit);
+
+
+MODULE_AUTHOR("Helge Deller");
+MODULE_DESCRIPTION("Soft power switch driver");
+MODULE_LICENSE("Dual BSD/GPL");
diff --git a/drivers/parisc/sba_iommu.c b/drivers/parisc/sba_iommu.c
new file mode 100644
index 000000000000..82ea68b55df4
--- /dev/null
+++ b/drivers/parisc/sba_iommu.c
@@ -0,0 +1,2165 @@
+/*
+** System Bus Adapter (SBA) I/O MMU manager
+**
+** (c) Copyright 2000-2004 Grant Grundler <grundler @ parisc-linux x org>
+** (c) Copyright 2004 Naresh Kumar Inna <knaresh at india x hp x com>
+** (c) Copyright 2000-2004 Hewlett-Packard Company
+**
+** Portions (c) 1999 Dave S. Miller (from sparc64 I/O MMU code)
+**
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License as published by
+** the Free Software Foundation; either version 2 of the License, or
+** (at your option) any later version.
+**
+**
+** This module initializes the IOC (I/O Controller) found on B1000/C3000/
+** J5000/J7000/N-class/L-class machines and their successors.
+**
+** FIXME: add DMA hint support programming in both sba and lba modules.
+*/
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/spinlock.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+
+#include <linux/mm.h>
+#include <linux/string.h>
+#include <linux/pci.h>
+
+#include <asm/byteorder.h>
+#include <asm/io.h>
+#include <asm/dma.h> /* for DMA_CHUNK_SIZE */
+
+#include <asm/hardware.h> /* for register_parisc_driver() stuff */
+
+#include <linux/proc_fs.h>
+#include <asm/runway.h> /* for proc_runway_root */
+#include <asm/pdc.h> /* for PDC_MODEL_* */
+#include <asm/pdcpat.h> /* for is_pdc_pat() */
+#include <asm/parisc-device.h>
+
+
+/* declared in arch/parisc/kernel/setup.c */
+extern struct proc_dir_entry * proc_mckinley_root;
+
+#define MODULE_NAME "SBA"
+
+#ifdef CONFIG_PROC_FS
+/* depends on proc fs support. But costs CPU performance */
+#undef SBA_COLLECT_STATS
+#endif
+
+/*
+** The number of debug flags is a clue - this code is fragile.
+** Don't even think about messing with it unless you have
+** plenty of 710's to sacrifice to the computer gods. :^)
+*/
+#undef DEBUG_SBA_INIT
+#undef DEBUG_SBA_RUN
+#undef DEBUG_SBA_RUN_SG
+#undef DEBUG_SBA_RESOURCE
+#undef ASSERT_PDIR_SANITY
+#undef DEBUG_LARGE_SG_ENTRIES
+#undef DEBUG_DMB_TRAP
+
+#ifdef DEBUG_SBA_INIT
+#define DBG_INIT(x...) printk(x)
+#else
+#define DBG_INIT(x...)
+#endif
+
+#ifdef DEBUG_SBA_RUN
+#define DBG_RUN(x...) printk(x)
+#else
+#define DBG_RUN(x...)
+#endif
+
+#ifdef DEBUG_SBA_RUN_SG
+#define DBG_RUN_SG(x...) printk(x)
+#else
+#define DBG_RUN_SG(x...)
+#endif
+
+
+#ifdef DEBUG_SBA_RESOURCE
+#define DBG_RES(x...) printk(x)
+#else
+#define DBG_RES(x...)
+#endif
+
+#if defined(__LP64__) && !defined(CONFIG_PDC_NARROW)
+/* "low end" PA8800 machines use ZX1 chipset */
+#define ZX1_SUPPORT
+#endif
+
+#define SBA_INLINE __inline__
+
+
+/*
+** The number of pdir entries to "free" before issueing
+** a read to PCOM register to flush out PCOM writes.
+** Interacts with allocation granularity (ie 4 or 8 entries
+** allocated and free'd/purged at a time might make this
+** less interesting).
+*/
+#define DELAYED_RESOURCE_CNT 16
+
+#define DEFAULT_DMA_HINT_REG 0
+
+#define ASTRO_RUNWAY_PORT 0x582
+#define IKE_MERCED_PORT 0x803
+#define REO_MERCED_PORT 0x804
+#define REOG_MERCED_PORT 0x805
+#define PLUTO_MCKINLEY_PORT 0x880
+
+#define SBA_FUNC_ID 0x0000 /* function id */
+#define SBA_FCLASS 0x0008 /* function class, bist, header, rev... */
+
+#define IS_ASTRO(id) ((id)->hversion == ASTRO_RUNWAY_PORT)
+#define IS_IKE(id) ((id)->hversion == IKE_MERCED_PORT)
+#define IS_PLUTO(id) ((id)->hversion == PLUTO_MCKINLEY_PORT)
+
+#define SBA_FUNC_SIZE 4096 /* SBA configuration function reg set */
+
+#define ASTRO_IOC_OFFSET (32 * SBA_FUNC_SIZE)
+#define PLUTO_IOC_OFFSET (1 * SBA_FUNC_SIZE)
+/* Ike's IOC's occupy functions 2 and 3 */
+#define IKE_IOC_OFFSET(p) ((p+2) * SBA_FUNC_SIZE)
+
+#define IOC_CTRL 0x8 /* IOC_CTRL offset */
+#define IOC_CTRL_TC (1 << 0) /* TOC Enable */
+#define IOC_CTRL_CE (1 << 1) /* Coalesce Enable */
+#define IOC_CTRL_DE (1 << 2) /* Dillon Enable */
+#define IOC_CTRL_RM (1 << 8) /* Real Mode */
+#define IOC_CTRL_NC (1 << 9) /* Non Coherent Mode */
+#define IOC_CTRL_D4 (1 << 11) /* Disable 4-byte coalescing */
+#define IOC_CTRL_DD (1 << 13) /* Disable distr. LMMIO range coalescing */
+
+#define MAX_IOC 2 /* per Ike. Pluto/Astro only have 1. */
+
+#define ROPES_PER_IOC 8 /* per Ike half or Pluto/Astro */
+
+
+/*
+** Offsets into MBIB (Function 0 on Ike and hopefully Astro)
+** Firmware programs this stuff. Don't touch it.
+*/
+#define LMMIO_DIRECT0_BASE 0x300
+#define LMMIO_DIRECT0_MASK 0x308
+#define LMMIO_DIRECT0_ROUTE 0x310
+
+#define LMMIO_DIST_BASE 0x360
+#define LMMIO_DIST_MASK 0x368
+#define LMMIO_DIST_ROUTE 0x370
+
+#define IOS_DIST_BASE 0x390
+#define IOS_DIST_MASK 0x398
+#define IOS_DIST_ROUTE 0x3A0
+
+#define IOS_DIRECT_BASE 0x3C0
+#define IOS_DIRECT_MASK 0x3C8
+#define IOS_DIRECT_ROUTE 0x3D0
+
+/*
+** Offsets into I/O TLB (Function 2 and 3 on Ike)
+*/
+#define ROPE0_CTL 0x200 /* "regbus pci0" */
+#define ROPE1_CTL 0x208
+#define ROPE2_CTL 0x210
+#define ROPE3_CTL 0x218
+#define ROPE4_CTL 0x220
+#define ROPE5_CTL 0x228
+#define ROPE6_CTL 0x230
+#define ROPE7_CTL 0x238
+
+#define HF_ENABLE 0x40
+
+
+#define IOC_IBASE 0x300 /* IO TLB */
+#define IOC_IMASK 0x308
+#define IOC_PCOM 0x310
+#define IOC_TCNFG 0x318
+#define IOC_PDIR_BASE 0x320
+
+/* AGP GART driver looks for this */
+#define SBA_IOMMU_COOKIE 0x0000badbadc0ffeeUL
+
+
+/*
+** IOC supports 4/8/16/64KB page sizes (see TCNFG register)
+** It's safer (avoid memory corruption) to keep DMA page mappings
+** equivalently sized to VM PAGE_SIZE.
+**
+** We really can't avoid generating a new mapping for each
+** page since the Virtual Coherence Index has to be generated
+** and updated for each page.
+**
+** PAGE_SIZE could be greater than IOVP_SIZE. But not the inverse.
+*/
+#define IOVP_SIZE PAGE_SIZE
+#define IOVP_SHIFT PAGE_SHIFT
+#define IOVP_MASK PAGE_MASK
+
+#define SBA_PERF_CFG 0x708 /* Performance Counter stuff */
+#define SBA_PERF_MASK1 0x718
+#define SBA_PERF_MASK2 0x730
+
+
+/*
+** Offsets into PCI Performance Counters (functions 12 and 13)
+** Controlled by PERF registers in function 2 & 3 respectively.
+*/
+#define SBA_PERF_CNT1 0x200
+#define SBA_PERF_CNT2 0x208
+#define SBA_PERF_CNT3 0x210
+
+
+struct ioc {
+ void __iomem *ioc_hpa; /* I/O MMU base address */
+ char *res_map; /* resource map, bit == pdir entry */
+ u64 *pdir_base; /* physical base address */
+ unsigned long ibase; /* pdir IOV Space base - shared w/lba_pci */
+ unsigned long imask; /* pdir IOV Space mask - shared w/lba_pci */
+#ifdef ZX1_SUPPORT
+ unsigned long iovp_mask; /* help convert IOVA to IOVP */
+#endif
+ unsigned long *res_hint; /* next avail IOVP - circular search */
+ spinlock_t res_lock;
+ unsigned int res_bitshift; /* from the LEFT! */
+ unsigned int res_size; /* size of resource map in bytes */
+#if SBA_HINT_SUPPORT
+/* FIXME : DMA HINTs not used */
+ unsigned long hint_mask_pdir; /* bits used for DMA hints */
+ unsigned int hint_shift_pdir;
+#endif
+#if DELAYED_RESOURCE_CNT > 0
+ int saved_cnt;
+ struct sba_dma_pair {
+ dma_addr_t iova;
+ size_t size;
+ } saved[DELAYED_RESOURCE_CNT];
+#endif
+
+#ifdef SBA_COLLECT_STATS
+#define SBA_SEARCH_SAMPLE 0x100
+ unsigned long avg_search[SBA_SEARCH_SAMPLE];
+ unsigned long avg_idx; /* current index into avg_search */
+ unsigned long used_pages;
+ unsigned long msingle_calls;
+ unsigned long msingle_pages;
+ unsigned long msg_calls;
+ unsigned long msg_pages;
+ unsigned long usingle_calls;
+ unsigned long usingle_pages;
+ unsigned long usg_calls;
+ unsigned long usg_pages;
+#endif
+
+ /* STUFF We don't need in performance path */
+ unsigned int pdir_size; /* in bytes, determined by IOV Space size */
+};
+
+struct sba_device {
+ struct sba_device *next; /* list of SBA's in system */
+ struct parisc_device *dev; /* dev found in bus walk */
+ struct parisc_device_id *iodc; /* data about dev from firmware */
+ const char *name;
+ void __iomem *sba_hpa; /* base address */
+ spinlock_t sba_lock;
+ unsigned int flags; /* state/functionality enabled */
+ unsigned int hw_rev; /* HW revision of chip */
+
+ struct resource chip_resv; /* MMIO reserved for chip */
+ struct resource iommu_resv; /* MMIO reserved for iommu */
+
+ unsigned int num_ioc; /* number of on-board IOC's */
+ struct ioc ioc[MAX_IOC];
+};
+
+
+static struct sba_device *sba_list;
+
+static unsigned long ioc_needs_fdc = 0;
+
+/* global count of IOMMUs in the system */
+static unsigned int global_ioc_cnt = 0;
+
+/* PA8700 (Piranha 2.2) bug workaround */
+static unsigned long piranha_bad_128k = 0;
+
+/* Looks nice and keeps the compiler happy */
+#define SBA_DEV(d) ((struct sba_device *) (d))
+
+#if SBA_AGP_SUPPORT
+static int reserve_sba_gart = 1;
+#endif
+
+#define ROUNDUP(x,y) ((x + ((y)-1)) & ~((y)-1))
+
+
+/************************************
+** SBA register read and write support
+**
+** BE WARNED: register writes are posted.
+** (ie follow writes which must reach HW with a read)
+**
+** Superdome (in particular, REO) allows only 64-bit CSR accesses.
+*/
+#define READ_REG32(addr) le32_to_cpu(__raw_readl(addr))
+#define READ_REG64(addr) le64_to_cpu(__raw_readq(addr))
+#define WRITE_REG32(val, addr) __raw_writel(cpu_to_le32(val), addr)
+#define WRITE_REG64(val, addr) __raw_writeq(cpu_to_le64(val), addr)
+
+#ifdef __LP64__
+#define READ_REG(addr) READ_REG64(addr)
+#define WRITE_REG(value, addr) WRITE_REG64(value, addr)
+#else
+#define READ_REG(addr) READ_REG32(addr)
+#define WRITE_REG(value, addr) WRITE_REG32(value, addr)
+#endif
+
+#ifdef DEBUG_SBA_INIT
+
+/* NOTE: When __LP64__ isn't defined, READ_REG64() is two 32-bit reads */
+
+/**
+ * sba_dump_ranges - debugging only - print ranges assigned to this IOA
+ * @hpa: base address of the sba
+ *
+ * Print the MMIO and IO Port address ranges forwarded by an Astro/Ike/RIO
+ * IO Adapter (aka Bus Converter).
+ */
+static void
+sba_dump_ranges(void __iomem *hpa)
+{
+ DBG_INIT("SBA at 0x%p\n", hpa);
+ DBG_INIT("IOS_DIST_BASE : %Lx\n", READ_REG64(hpa+IOS_DIST_BASE));
+ DBG_INIT("IOS_DIST_MASK : %Lx\n", READ_REG64(hpa+IOS_DIST_MASK));
+ DBG_INIT("IOS_DIST_ROUTE : %Lx\n", READ_REG64(hpa+IOS_DIST_ROUTE));
+ DBG_INIT("\n");
+ DBG_INIT("IOS_DIRECT_BASE : %Lx\n", READ_REG64(hpa+IOS_DIRECT_BASE));
+ DBG_INIT("IOS_DIRECT_MASK : %Lx\n", READ_REG64(hpa+IOS_DIRECT_MASK));
+ DBG_INIT("IOS_DIRECT_ROUTE: %Lx\n", READ_REG64(hpa+IOS_DIRECT_ROUTE));
+}
+
+/**
+ * sba_dump_tlb - debugging only - print IOMMU operating parameters
+ * @hpa: base address of the IOMMU
+ *
+ * Print the size/location of the IO MMU PDIR.
+ */
+static void sba_dump_tlb(void __iomem *hpa)
+{
+ DBG_INIT("IO TLB at 0x%p\n", hpa);
+ DBG_INIT("IOC_IBASE : 0x%Lx\n", READ_REG64(hpa+IOC_IBASE));
+ DBG_INIT("IOC_IMASK : 0x%Lx\n", READ_REG64(hpa+IOC_IMASK));
+ DBG_INIT("IOC_TCNFG : 0x%Lx\n", READ_REG64(hpa+IOC_TCNFG));
+ DBG_INIT("IOC_PDIR_BASE: 0x%Lx\n", READ_REG64(hpa+IOC_PDIR_BASE));
+ DBG_INIT("\n");
+}
+#else
+#define sba_dump_ranges(x)
+#define sba_dump_tlb(x)
+#endif
+
+
+#ifdef ASSERT_PDIR_SANITY
+
+/**
+ * sba_dump_pdir_entry - debugging only - print one IOMMU PDIR entry
+ * @ioc: IO MMU structure which owns the pdir we are interested in.
+ * @msg: text to print ont the output line.
+ * @pide: pdir index.
+ *
+ * Print one entry of the IO MMU PDIR in human readable form.
+ */
+static void
+sba_dump_pdir_entry(struct ioc *ioc, char *msg, uint pide)
+{
+ /* start printing from lowest pde in rval */
+ u64 *ptr = &(ioc->pdir_base[pide & (~0U * BITS_PER_LONG)]);
+ unsigned long *rptr = (unsigned long *) &(ioc->res_map[(pide >>3) & ~(sizeof(unsigned long) - 1)]);
+ uint rcnt;
+
+ printk(KERN_DEBUG "SBA: %s rp %p bit %d rval 0x%lx\n",
+ msg,
+ rptr, pide & (BITS_PER_LONG - 1), *rptr);
+
+ rcnt = 0;
+ while (rcnt < BITS_PER_LONG) {
+ printk(KERN_DEBUG "%s %2d %p %016Lx\n",
+ (rcnt == (pide & (BITS_PER_LONG - 1)))
+ ? " -->" : " ",
+ rcnt, ptr, *ptr );
+ rcnt++;
+ ptr++;
+ }
+ printk(KERN_DEBUG "%s", msg);
+}
+
+
+/**
+ * sba_check_pdir - debugging only - consistency checker
+ * @ioc: IO MMU structure which owns the pdir we are interested in.
+ * @msg: text to print ont the output line.
+ *
+ * Verify the resource map and pdir state is consistent
+ */
+static int
+sba_check_pdir(struct ioc *ioc, char *msg)
+{
+ u32 *rptr_end = (u32 *) &(ioc->res_map[ioc->res_size]);
+ u32 *rptr = (u32 *) ioc->res_map; /* resource map ptr */
+ u64 *pptr = ioc->pdir_base; /* pdir ptr */
+ uint pide = 0;
+
+ while (rptr < rptr_end) {
+ u32 rval = *rptr;
+ int rcnt = 32; /* number of bits we might check */
+
+ while (rcnt) {
+ /* Get last byte and highest bit from that */
+ u32 pde = ((u32) (((char *)pptr)[7])) << 24;
+ if ((rval ^ pde) & 0x80000000)
+ {
+ /*
+ ** BUMMER! -- res_map != pdir --
+ ** Dump rval and matching pdir entries
+ */
+ sba_dump_pdir_entry(ioc, msg, pide);
+ return(1);
+ }
+ rcnt--;
+ rval <<= 1; /* try the next bit */
+ pptr++;
+ pide++;
+ }
+ rptr++; /* look at next word of res_map */
+ }
+ /* It'd be nice if we always got here :^) */
+ return 0;
+}
+
+
+/**
+ * sba_dump_sg - debugging only - print Scatter-Gather list
+ * @ioc: IO MMU structure which owns the pdir we are interested in.
+ * @startsg: head of the SG list
+ * @nents: number of entries in SG list
+ *
+ * print the SG list so we can verify it's correct by hand.
+ */
+static void
+sba_dump_sg( struct ioc *ioc, struct scatterlist *startsg, int nents)
+{
+ while (nents-- > 0) {
+ printk(KERN_DEBUG " %d : %08lx/%05x %p/%05x\n",
+ nents,
+ (unsigned long) sg_dma_address(startsg),
+ sg_dma_len(startsg),
+ sg_virt_addr(startsg), startsg->length);
+ startsg++;
+ }
+}
+
+#endif /* ASSERT_PDIR_SANITY */
+
+
+
+
+/**************************************************************
+*
+* I/O Pdir Resource Management
+*
+* Bits set in the resource map are in use.
+* Each bit can represent a number of pages.
+* LSbs represent lower addresses (IOVA's).
+*
+***************************************************************/
+#define PAGES_PER_RANGE 1 /* could increase this to 4 or 8 if needed */
+
+/* Convert from IOVP to IOVA and vice versa. */
+
+#ifdef ZX1_SUPPORT
+/* Pluto (aka ZX1) boxes need to set or clear the ibase bits appropriately */
+#define SBA_IOVA(ioc,iovp,offset,hint_reg) ((ioc->ibase) | (iovp) | (offset))
+#define SBA_IOVP(ioc,iova) ((iova) & (ioc)->iovp_mask)
+#else
+/* only support Astro and ancestors. Saves a few cycles in key places */
+#define SBA_IOVA(ioc,iovp,offset,hint_reg) ((iovp) | (offset))
+#define SBA_IOVP(ioc,iova) (iova)
+#endif
+
+#define PDIR_INDEX(iovp) ((iovp)>>IOVP_SHIFT)
+
+#define RESMAP_MASK(n) (~0UL << (BITS_PER_LONG - (n)))
+#define RESMAP_IDX_MASK (sizeof(unsigned long) - 1)
+
+
+/**
+ * sba_search_bitmap - find free space in IO PDIR resource bitmap
+ * @ioc: IO MMU structure which owns the pdir we are interested in.
+ * @bits_wanted: number of entries we need.
+ *
+ * Find consecutive free bits in resource bitmap.
+ * Each bit represents one entry in the IO Pdir.
+ * Cool perf optimization: search for log2(size) bits at a time.
+ */
+static SBA_INLINE unsigned long
+sba_search_bitmap(struct ioc *ioc, unsigned long bits_wanted)
+{
+ unsigned long *res_ptr = ioc->res_hint;
+ unsigned long *res_end = (unsigned long *) &(ioc->res_map[ioc->res_size]);
+ unsigned long pide = ~0UL;
+
+ if (bits_wanted > (BITS_PER_LONG/2)) {
+ /* Search word at a time - no mask needed */
+ for(; res_ptr < res_end; ++res_ptr) {
+ if (*res_ptr == 0) {
+ *res_ptr = RESMAP_MASK(bits_wanted);
+ pide = ((unsigned long)res_ptr - (unsigned long)ioc->res_map);
+ pide <<= 3; /* convert to bit address */
+ break;
+ }
+ }
+ /* point to the next word on next pass */
+ res_ptr++;
+ ioc->res_bitshift = 0;
+ } else {
+ /*
+ ** Search the resource bit map on well-aligned values.
+ ** "o" is the alignment.
+ ** We need the alignment to invalidate I/O TLB using
+ ** SBA HW features in the unmap path.
+ */
+ unsigned long o = 1 << get_order(bits_wanted << PAGE_SHIFT);
+ uint bitshiftcnt = ROUNDUP(ioc->res_bitshift, o);
+ unsigned long mask;
+
+ if (bitshiftcnt >= BITS_PER_LONG) {
+ bitshiftcnt = 0;
+ res_ptr++;
+ }
+ mask = RESMAP_MASK(bits_wanted) >> bitshiftcnt;
+
+ DBG_RES("%s() o %ld %p", __FUNCTION__, o, res_ptr);
+ while(res_ptr < res_end)
+ {
+ DBG_RES(" %p %lx %lx\n", res_ptr, mask, *res_ptr);
+ WARN_ON(mask == 0);
+ if(((*res_ptr) & mask) == 0) {
+ *res_ptr |= mask; /* mark resources busy! */
+ pide = ((unsigned long)res_ptr - (unsigned long)ioc->res_map);
+ pide <<= 3; /* convert to bit address */
+ pide += bitshiftcnt;
+ break;
+ }
+ mask >>= o;
+ bitshiftcnt += o;
+ if (mask == 0) {
+ mask = RESMAP_MASK(bits_wanted);
+ bitshiftcnt=0;
+ res_ptr++;
+ }
+ }
+ /* look in the same word on the next pass */
+ ioc->res_bitshift = bitshiftcnt + bits_wanted;
+ }
+
+ /* wrapped ? */
+ if (res_end <= res_ptr) {
+ ioc->res_hint = (unsigned long *) ioc->res_map;
+ ioc->res_bitshift = 0;
+ } else {
+ ioc->res_hint = res_ptr;
+ }
+ return (pide);
+}
+
+
+/**
+ * sba_alloc_range - find free bits and mark them in IO PDIR resource bitmap
+ * @ioc: IO MMU structure which owns the pdir we are interested in.
+ * @size: number of bytes to create a mapping for
+ *
+ * Given a size, find consecutive unmarked and then mark those bits in the
+ * resource bit map.
+ */
+static int
+sba_alloc_range(struct ioc *ioc, size_t size)
+{
+ unsigned int pages_needed = size >> IOVP_SHIFT;
+#ifdef SBA_COLLECT_STATS
+ unsigned long cr_start = mfctl(16);
+#endif
+ unsigned long pide;
+
+ pide = sba_search_bitmap(ioc, pages_needed);
+ if (pide >= (ioc->res_size << 3)) {
+ pide = sba_search_bitmap(ioc, pages_needed);
+ if (pide >= (ioc->res_size << 3))
+ panic("%s: I/O MMU @ %p is out of mapping resources\n",
+ __FILE__, ioc->ioc_hpa);
+ }
+
+#ifdef ASSERT_PDIR_SANITY
+ /* verify the first enable bit is clear */
+ if(0x00 != ((u8 *) ioc->pdir_base)[pide*sizeof(u64) + 7]) {
+ sba_dump_pdir_entry(ioc, "sba_search_bitmap() botched it?", pide);
+ }
+#endif
+
+ DBG_RES("%s(%x) %d -> %lx hint %x/%x\n",
+ __FUNCTION__, size, pages_needed, pide,
+ (uint) ((unsigned long) ioc->res_hint - (unsigned long) ioc->res_map),
+ ioc->res_bitshift );
+
+#ifdef SBA_COLLECT_STATS
+ {
+ unsigned long cr_end = mfctl(16);
+ unsigned long tmp = cr_end - cr_start;
+ /* check for roll over */
+ cr_start = (cr_end < cr_start) ? -(tmp) : (tmp);
+ }
+ ioc->avg_search[ioc->avg_idx++] = cr_start;
+ ioc->avg_idx &= SBA_SEARCH_SAMPLE - 1;
+
+ ioc->used_pages += pages_needed;
+#endif
+
+ return (pide);
+}
+
+
+/**
+ * sba_free_range - unmark bits in IO PDIR resource bitmap
+ * @ioc: IO MMU structure which owns the pdir we are interested in.
+ * @iova: IO virtual address which was previously allocated.
+ * @size: number of bytes to create a mapping for
+ *
+ * clear bits in the ioc's resource map
+ */
+static SBA_INLINE void
+sba_free_range(struct ioc *ioc, dma_addr_t iova, size_t size)
+{
+ unsigned long iovp = SBA_IOVP(ioc, iova);
+ unsigned int pide = PDIR_INDEX(iovp);
+ unsigned int ridx = pide >> 3; /* convert bit to byte address */
+ unsigned long *res_ptr = (unsigned long *) &((ioc)->res_map[ridx & ~RESMAP_IDX_MASK]);
+
+ int bits_not_wanted = size >> IOVP_SHIFT;
+
+ /* 3-bits "bit" address plus 2 (or 3) bits for "byte" == bit in word */
+ unsigned long m = RESMAP_MASK(bits_not_wanted) >> (pide & (BITS_PER_LONG - 1));
+
+ DBG_RES("%s( ,%x,%x) %x/%lx %x %p %lx\n",
+ __FUNCTION__, (uint) iova, size,
+ bits_not_wanted, m, pide, res_ptr, *res_ptr);
+
+#ifdef SBA_COLLECT_STATS
+ ioc->used_pages -= bits_not_wanted;
+#endif
+
+ *res_ptr &= ~m;
+}
+
+
+/**************************************************************
+*
+* "Dynamic DMA Mapping" support (aka "Coherent I/O")
+*
+***************************************************************/
+
+#if SBA_HINT_SUPPORT
+#define SBA_DMA_HINT(ioc, val) ((val) << (ioc)->hint_shift_pdir)
+#endif
+
+typedef unsigned long space_t;
+#define KERNEL_SPACE 0
+
+/**
+ * sba_io_pdir_entry - fill in one IO PDIR entry
+ * @pdir_ptr: pointer to IO PDIR entry
+ * @sid: process Space ID - currently only support KERNEL_SPACE
+ * @vba: Virtual CPU address of buffer to map
+ * @hint: DMA hint set to use for this mapping
+ *
+ * SBA Mapping Routine
+ *
+ * Given a virtual address (vba, arg2) and space id, (sid, arg1)
+ * sba_io_pdir_entry() loads the I/O PDIR entry pointed to by
+ * pdir_ptr (arg0).
+ * Using the bass-ackwards HP bit numbering, Each IO Pdir entry
+ * for Astro/Ike looks like:
+ *
+ *
+ * 0 19 51 55 63
+ * +-+---------------------+----------------------------------+----+--------+
+ * |V| U | PPN[43:12] | U | VI |
+ * +-+---------------------+----------------------------------+----+--------+
+ *
+ * Pluto is basically identical, supports fewer physical address bits:
+ *
+ * 0 23 51 55 63
+ * +-+------------------------+-------------------------------+----+--------+
+ * |V| U | PPN[39:12] | U | VI |
+ * +-+------------------------+-------------------------------+----+--------+
+ *
+ * V == Valid Bit (Most Significant Bit is bit 0)
+ * U == Unused
+ * PPN == Physical Page Number
+ * VI == Virtual Index (aka Coherent Index)
+ *
+ * LPA instruction output is put into PPN field.
+ * LCI (Load Coherence Index) instruction provides the "VI" bits.
+ *
+ * We pre-swap the bytes since PCX-W is Big Endian and the
+ * IOMMU uses little endian for the pdir.
+ */
+
+void SBA_INLINE
+sba_io_pdir_entry(u64 *pdir_ptr, space_t sid, unsigned long vba,
+ unsigned long hint)
+{
+ u64 pa; /* physical address */
+ register unsigned ci; /* coherent index */
+
+ pa = virt_to_phys(vba);
+ pa &= IOVP_MASK;
+
+ mtsp(sid,1);
+ asm("lci 0(%%sr1, %1), %0" : "=r" (ci) : "r" (vba));
+ pa |= (ci >> 12) & 0xff; /* move CI (8 bits) into lowest byte */
+
+ pa |= 0x8000000000000000ULL; /* set "valid" bit */
+ *pdir_ptr = cpu_to_le64(pa); /* swap and store into I/O Pdir */
+
+ /*
+ * If the PDC_MODEL capabilities has Non-coherent IO-PDIR bit set
+ * (bit #61, big endian), we have to flush and sync every time
+ * IO-PDIR is changed in Ike/Astro.
+ */
+ if (ioc_needs_fdc) {
+ asm volatile("fdc 0(%%sr1,%0)\n\tsync" : : "r" (pdir_ptr));
+ }
+}
+
+
+/**
+ * sba_mark_invalid - invalidate one or more IO PDIR entries
+ * @ioc: IO MMU structure which owns the pdir we are interested in.
+ * @iova: IO Virtual Address mapped earlier
+ * @byte_cnt: number of bytes this mapping covers.
+ *
+ * Marking the IO PDIR entry(ies) as Invalid and invalidate
+ * corresponding IO TLB entry. The Ike PCOM (Purge Command Register)
+ * is to purge stale entries in the IO TLB when unmapping entries.
+ *
+ * The PCOM register supports purging of multiple pages, with a minium
+ * of 1 page and a maximum of 2GB. Hardware requires the address be
+ * aligned to the size of the range being purged. The size of the range
+ * must be a power of 2. The "Cool perf optimization" in the
+ * allocation routine helps keep that true.
+ */
+static SBA_INLINE void
+sba_mark_invalid(struct ioc *ioc, dma_addr_t iova, size_t byte_cnt)
+{
+ u32 iovp = (u32) SBA_IOVP(ioc,iova);
+
+ /* Even though this is a big-endian machine, the entries
+ ** in the iopdir are little endian. That's why we clear the byte
+ ** at +7 instead of at +0.
+ */
+ int off = PDIR_INDEX(iovp)*sizeof(u64)+7;
+
+#ifdef ASSERT_PDIR_SANITY
+ /* Assert first pdir entry is set */
+ if (0x80 != (((u8 *) ioc->pdir_base)[off])) {
+ sba_dump_pdir_entry(ioc,"sba_mark_invalid()", PDIR_INDEX(iovp));
+ }
+#endif
+
+ if (byte_cnt <= IOVP_SIZE)
+ {
+ iovp |= IOVP_SHIFT; /* set "size" field for PCOM */
+
+ /*
+ ** clear I/O PDIR entry "valid" bit
+ ** Do NOT clear the rest - save it for debugging.
+ ** We should only clear bits that have previously
+ ** been enabled.
+ */
+ ((u8 *)(ioc->pdir_base))[off] = 0;
+ } else {
+ u32 t = get_order(byte_cnt) + PAGE_SHIFT;
+
+ iovp |= t;
+ do {
+ /* clear I/O Pdir entry "valid" bit first */
+ ((u8 *)(ioc->pdir_base))[off] = 0;
+ off += sizeof(u64);
+ byte_cnt -= IOVP_SIZE;
+ } while (byte_cnt > 0);
+ }
+
+ WRITE_REG( SBA_IOVA(ioc, iovp, 0, 0), ioc->ioc_hpa+IOC_PCOM);
+}
+
+/**
+ * sba_dma_supported - PCI driver can query DMA support
+ * @dev: instance of PCI owned by the driver that's asking
+ * @mask: number of address bits this PCI device can handle
+ *
+ * See Documentation/DMA-mapping.txt
+ */
+static int sba_dma_supported( struct device *dev, u64 mask)
+{
+ struct ioc *ioc;
+ if (dev == NULL) {
+ printk(KERN_ERR MODULE_NAME ": EISA/ISA/et al not supported\n");
+ BUG();
+ return(0);
+ }
+
+ ioc = GET_IOC(dev);
+
+ /* check if mask is > than the largest IO Virt Address */
+
+ return((int) (mask >= (ioc->ibase +
+ (ioc->pdir_size / sizeof(u64) * IOVP_SIZE) )));
+}
+
+
+/**
+ * sba_map_single - map one buffer and return IOVA for DMA
+ * @dev: instance of PCI owned by the driver that's asking.
+ * @addr: driver buffer to map.
+ * @size: number of bytes to map in driver buffer.
+ * @direction: R/W or both.
+ *
+ * See Documentation/DMA-mapping.txt
+ */
+static dma_addr_t
+sba_map_single(struct device *dev, void *addr, size_t size,
+ enum dma_data_direction direction)
+{
+ struct ioc *ioc;
+ unsigned long flags;
+ dma_addr_t iovp;
+ dma_addr_t offset;
+ u64 *pdir_start;
+ int pide;
+
+ ioc = GET_IOC(dev);
+
+ /* save offset bits */
+ offset = ((dma_addr_t) (long) addr) & ~IOVP_MASK;
+
+ /* round up to nearest IOVP_SIZE */
+ size = (size + offset + ~IOVP_MASK) & IOVP_MASK;
+
+ spin_lock_irqsave(&ioc->res_lock, flags);
+#ifdef ASSERT_PDIR_SANITY
+ sba_check_pdir(ioc,"Check before sba_map_single()");
+#endif
+
+#ifdef SBA_COLLECT_STATS
+ ioc->msingle_calls++;
+ ioc->msingle_pages += size >> IOVP_SHIFT;
+#endif
+ pide = sba_alloc_range(ioc, size);
+ iovp = (dma_addr_t) pide << IOVP_SHIFT;
+
+ DBG_RUN("%s() 0x%p -> 0x%lx\n",
+ __FUNCTION__, addr, (long) iovp | offset);
+
+ pdir_start = &(ioc->pdir_base[pide]);
+
+ while (size > 0) {
+ sba_io_pdir_entry(pdir_start, KERNEL_SPACE, (unsigned long) addr, 0);
+
+ DBG_RUN(" pdir 0x%p %02x%02x%02x%02x%02x%02x%02x%02x\n",
+ pdir_start,
+ (u8) (((u8 *) pdir_start)[7]),
+ (u8) (((u8 *) pdir_start)[6]),
+ (u8) (((u8 *) pdir_start)[5]),
+ (u8) (((u8 *) pdir_start)[4]),
+ (u8) (((u8 *) pdir_start)[3]),
+ (u8) (((u8 *) pdir_start)[2]),
+ (u8) (((u8 *) pdir_start)[1]),
+ (u8) (((u8 *) pdir_start)[0])
+ );
+
+ addr += IOVP_SIZE;
+ size -= IOVP_SIZE;
+ pdir_start++;
+ }
+ /* form complete address */
+#ifdef ASSERT_PDIR_SANITY
+ sba_check_pdir(ioc,"Check after sba_map_single()");
+#endif
+ spin_unlock_irqrestore(&ioc->res_lock, flags);
+ return SBA_IOVA(ioc, iovp, offset, DEFAULT_DMA_HINT_REG);
+}
+
+
+/**
+ * sba_unmap_single - unmap one IOVA and free resources
+ * @dev: instance of PCI owned by the driver that's asking.
+ * @iova: IOVA of driver buffer previously mapped.
+ * @size: number of bytes mapped in driver buffer.
+ * @direction: R/W or both.
+ *
+ * See Documentation/DMA-mapping.txt
+ */
+static void
+sba_unmap_single(struct device *dev, dma_addr_t iova, size_t size,
+ enum dma_data_direction direction)
+{
+ struct ioc *ioc;
+#if DELAYED_RESOURCE_CNT > 0
+ struct sba_dma_pair *d;
+#endif
+ unsigned long flags;
+ dma_addr_t offset;
+
+ DBG_RUN("%s() iovp 0x%lx/%x\n", __FUNCTION__, (long) iova, size);
+
+ ioc = GET_IOC(dev);
+ offset = iova & ~IOVP_MASK;
+ iova ^= offset; /* clear offset bits */
+ size += offset;
+ size = ROUNDUP(size, IOVP_SIZE);
+
+ spin_lock_irqsave(&ioc->res_lock, flags);
+
+#ifdef SBA_COLLECT_STATS
+ ioc->usingle_calls++;
+ ioc->usingle_pages += size >> IOVP_SHIFT;
+#endif
+
+ sba_mark_invalid(ioc, iova, size);
+
+#if DELAYED_RESOURCE_CNT > 0
+ /* Delaying when we re-use a IO Pdir entry reduces the number
+ * of MMIO reads needed to flush writes to the PCOM register.
+ */
+ d = &(ioc->saved[ioc->saved_cnt]);
+ d->iova = iova;
+ d->size = size;
+ if (++(ioc->saved_cnt) >= DELAYED_RESOURCE_CNT) {
+ int cnt = ioc->saved_cnt;
+ while (cnt--) {
+ sba_free_range(ioc, d->iova, d->size);
+ d--;
+ }
+ ioc->saved_cnt = 0;
+ READ_REG(ioc->ioc_hpa+IOC_PCOM); /* flush purges */
+ }
+#else /* DELAYED_RESOURCE_CNT == 0 */
+ sba_free_range(ioc, iova, size);
+ READ_REG(ioc->ioc_hpa+IOC_PCOM); /* flush purges */
+#endif /* DELAYED_RESOURCE_CNT == 0 */
+ spin_unlock_irqrestore(&ioc->res_lock, flags);
+
+ /* XXX REVISIT for 2.5 Linux - need syncdma for zero-copy support.
+ ** For Astro based systems this isn't a big deal WRT performance.
+ ** As long as 2.4 kernels copyin/copyout data from/to userspace,
+ ** we don't need the syncdma. The issue here is I/O MMU cachelines
+ ** are *not* coherent in all cases. May be hwrev dependent.
+ ** Need to investigate more.
+ asm volatile("syncdma");
+ */
+}
+
+
+/**
+ * sba_alloc_consistent - allocate/map shared mem for DMA
+ * @hwdev: instance of PCI owned by the driver that's asking.
+ * @size: number of bytes mapped in driver buffer.
+ * @dma_handle: IOVA of new buffer.
+ *
+ * See Documentation/DMA-mapping.txt
+ */
+static void *sba_alloc_consistent(struct device *hwdev, size_t size,
+ dma_addr_t *dma_handle, int gfp)
+{
+ void *ret;
+
+ if (!hwdev) {
+ /* only support PCI */
+ *dma_handle = 0;
+ return 0;
+ }
+
+ ret = (void *) __get_free_pages(gfp, get_order(size));
+
+ if (ret) {
+ memset(ret, 0, size);
+ *dma_handle = sba_map_single(hwdev, ret, size, 0);
+ }
+
+ return ret;
+}
+
+
+/**
+ * sba_free_consistent - free/unmap shared mem for DMA
+ * @hwdev: instance of PCI owned by the driver that's asking.
+ * @size: number of bytes mapped in driver buffer.
+ * @vaddr: virtual address IOVA of "consistent" buffer.
+ * @dma_handler: IO virtual address of "consistent" buffer.
+ *
+ * See Documentation/DMA-mapping.txt
+ */
+static void
+sba_free_consistent(struct device *hwdev, size_t size, void *vaddr,
+ dma_addr_t dma_handle)
+{
+ sba_unmap_single(hwdev, dma_handle, size, 0);
+ free_pages((unsigned long) vaddr, get_order(size));
+}
+
+
+/*
+** Since 0 is a valid pdir_base index value, can't use that
+** to determine if a value is valid or not. Use a flag to indicate
+** the SG list entry contains a valid pdir index.
+*/
+#define PIDE_FLAG 0x80000000UL
+
+#ifdef SBA_COLLECT_STATS
+#define IOMMU_MAP_STATS
+#endif
+#include "iommu-helpers.h"
+
+#ifdef DEBUG_LARGE_SG_ENTRIES
+int dump_run_sg = 0;
+#endif
+
+
+/**
+ * sba_map_sg - map Scatter/Gather list
+ * @dev: instance of PCI owned by the driver that's asking.
+ * @sglist: array of buffer/length pairs
+ * @nents: number of entries in list
+ * @direction: R/W or both.
+ *
+ * See Documentation/DMA-mapping.txt
+ */
+static int
+sba_map_sg(struct device *dev, struct scatterlist *sglist, int nents,
+ enum dma_data_direction direction)
+{
+ struct ioc *ioc;
+ int coalesced, filled = 0;
+ unsigned long flags;
+
+ DBG_RUN_SG("%s() START %d entries\n", __FUNCTION__, nents);
+
+ ioc = GET_IOC(dev);
+
+ /* Fast path single entry scatterlists. */
+ if (nents == 1) {
+ sg_dma_address(sglist) = sba_map_single(dev,
+ (void *)sg_virt_addr(sglist),
+ sglist->length, direction);
+ sg_dma_len(sglist) = sglist->length;
+ return 1;
+ }
+
+ spin_lock_irqsave(&ioc->res_lock, flags);
+
+#ifdef ASSERT_PDIR_SANITY
+ if (sba_check_pdir(ioc,"Check before sba_map_sg()"))
+ {
+ sba_dump_sg(ioc, sglist, nents);
+ panic("Check before sba_map_sg()");
+ }
+#endif
+
+#ifdef SBA_COLLECT_STATS
+ ioc->msg_calls++;
+#endif
+
+ /*
+ ** First coalesce the chunks and allocate I/O pdir space
+ **
+ ** If this is one DMA stream, we can properly map using the
+ ** correct virtual address associated with each DMA page.
+ ** w/o this association, we wouldn't have coherent DMA!
+ ** Access to the virtual address is what forces a two pass algorithm.
+ */
+ coalesced = iommu_coalesce_chunks(ioc, sglist, nents, sba_alloc_range);
+
+ /*
+ ** Program the I/O Pdir
+ **
+ ** map the virtual addresses to the I/O Pdir
+ ** o dma_address will contain the pdir index
+ ** o dma_len will contain the number of bytes to map
+ ** o address contains the virtual address.
+ */
+ filled = iommu_fill_pdir(ioc, sglist, nents, 0, sba_io_pdir_entry);
+
+#ifdef ASSERT_PDIR_SANITY
+ if (sba_check_pdir(ioc,"Check after sba_map_sg()"))
+ {
+ sba_dump_sg(ioc, sglist, nents);
+ panic("Check after sba_map_sg()\n");
+ }
+#endif
+
+ spin_unlock_irqrestore(&ioc->res_lock, flags);
+
+ DBG_RUN_SG("%s() DONE %d mappings\n", __FUNCTION__, filled);
+
+ return filled;
+}
+
+
+/**
+ * sba_unmap_sg - unmap Scatter/Gather list
+ * @dev: instance of PCI owned by the driver that's asking.
+ * @sglist: array of buffer/length pairs
+ * @nents: number of entries in list
+ * @direction: R/W or both.
+ *
+ * See Documentation/DMA-mapping.txt
+ */
+static void
+sba_unmap_sg(struct device *dev, struct scatterlist *sglist, int nents,
+ enum dma_data_direction direction)
+{
+ struct ioc *ioc;
+#ifdef ASSERT_PDIR_SANITY
+ unsigned long flags;
+#endif
+
+ DBG_RUN_SG("%s() START %d entries, %p,%x\n",
+ __FUNCTION__, nents, sg_virt_addr(sglist), sglist->length);
+
+ ioc = GET_IOC(dev);
+
+#ifdef SBA_COLLECT_STATS
+ ioc->usg_calls++;
+#endif
+
+#ifdef ASSERT_PDIR_SANITY
+ spin_lock_irqsave(&ioc->res_lock, flags);
+ sba_check_pdir(ioc,"Check before sba_unmap_sg()");
+ spin_unlock_irqrestore(&ioc->res_lock, flags);
+#endif
+
+ while (sg_dma_len(sglist) && nents--) {
+
+ sba_unmap_single(dev, sg_dma_address(sglist), sg_dma_len(sglist), direction);
+#ifdef SBA_COLLECT_STATS
+ ioc->usg_pages += ((sg_dma_address(sglist) & ~IOVP_MASK) + sg_dma_len(sglist) + IOVP_SIZE - 1) >> PAGE_SHIFT;
+ ioc->usingle_calls--; /* kluge since call is unmap_sg() */
+#endif
+ ++sglist;
+ }
+
+ DBG_RUN_SG("%s() DONE (nents %d)\n", __FUNCTION__, nents);
+
+#ifdef ASSERT_PDIR_SANITY
+ spin_lock_irqsave(&ioc->res_lock, flags);
+ sba_check_pdir(ioc,"Check after sba_unmap_sg()");
+ spin_unlock_irqrestore(&ioc->res_lock, flags);
+#endif
+
+}
+
+static struct hppa_dma_ops sba_ops = {
+ .dma_supported = sba_dma_supported,
+ .alloc_consistent = sba_alloc_consistent,
+ .alloc_noncoherent = sba_alloc_consistent,
+ .free_consistent = sba_free_consistent,
+ .map_single = sba_map_single,
+ .unmap_single = sba_unmap_single,
+ .map_sg = sba_map_sg,
+ .unmap_sg = sba_unmap_sg,
+ .dma_sync_single_for_cpu = NULL,
+ .dma_sync_single_for_device = NULL,
+ .dma_sync_sg_for_cpu = NULL,
+ .dma_sync_sg_for_device = NULL,
+};
+
+
+/**************************************************************************
+**
+** SBA PAT PDC support
+**
+** o call pdc_pat_cell_module()
+** o store ranges in PCI "resource" structures
+**
+**************************************************************************/
+
+static void
+sba_get_pat_resources(struct sba_device *sba_dev)
+{
+#if 0
+/*
+** TODO/REVISIT/FIXME: support for directed ranges requires calls to
+** PAT PDC to program the SBA/LBA directed range registers...this
+** burden may fall on the LBA code since it directly supports the
+** PCI subsystem. It's not clear yet. - ggg
+*/
+PAT_MOD(mod)->mod_info.mod_pages = PAT_GET_MOD_PAGES(temp);
+ FIXME : ???
+PAT_MOD(mod)->mod_info.dvi = PAT_GET_DVI(temp);
+ Tells where the dvi bits are located in the address.
+PAT_MOD(mod)->mod_info.ioc = PAT_GET_IOC(temp);
+ FIXME : ???
+#endif
+}
+
+
+/**************************************************************
+*
+* Initialization and claim
+*
+***************************************************************/
+#define PIRANHA_ADDR_MASK 0x00160000UL /* bit 17,18,20 */
+#define PIRANHA_ADDR_VAL 0x00060000UL /* bit 17,18 on */
+static void *
+sba_alloc_pdir(unsigned int pdir_size)
+{
+ unsigned long pdir_base;
+ unsigned long pdir_order = get_order(pdir_size);
+
+ pdir_base = __get_free_pages(GFP_KERNEL, pdir_order);
+ if (NULL == (void *) pdir_base)
+ panic("sba_ioc_init() could not allocate I/O Page Table\n");
+
+ /* If this is not PA8700 (PCX-W2)
+ ** OR newer than ver 2.2
+ ** OR in a system that doesn't need VINDEX bits from SBA,
+ **
+ ** then we aren't exposed to the HW bug.
+ */
+ if ( ((boot_cpu_data.pdc.cpuid >> 5) & 0x7f) != 0x13
+ || (boot_cpu_data.pdc.versions > 0x202)
+ || (boot_cpu_data.pdc.capabilities & 0x08L) )
+ return (void *) pdir_base;
+
+ /*
+ * PA8700 (PCX-W2, aka piranha) silent data corruption fix
+ *
+ * An interaction between PA8700 CPU (Ver 2.2 or older) and
+ * Ike/Astro can cause silent data corruption. This is only
+ * a problem if the I/O PDIR is located in memory such that
+ * (little-endian) bits 17 and 18 are on and bit 20 is off.
+ *
+ * Since the max IO Pdir size is 2MB, by cleverly allocating the
+ * right physical address, we can either avoid (IOPDIR <= 1MB)
+ * or minimize (2MB IO Pdir) the problem if we restrict the
+ * IO Pdir to a maximum size of 2MB-128K (1902K).
+ *
+ * Because we always allocate 2^N sized IO pdirs, either of the
+ * "bad" regions will be the last 128K if at all. That's easy
+ * to test for.
+ *
+ */
+ if (pdir_order <= (19-12)) {
+ if (((virt_to_phys(pdir_base)+pdir_size-1) & PIRANHA_ADDR_MASK) == PIRANHA_ADDR_VAL) {
+ /* allocate a new one on 512k alignment */
+ unsigned long new_pdir = __get_free_pages(GFP_KERNEL, (19-12));
+ /* release original */
+ free_pages(pdir_base, pdir_order);
+
+ pdir_base = new_pdir;
+
+ /* release excess */
+ while (pdir_order < (19-12)) {
+ new_pdir += pdir_size;
+ free_pages(new_pdir, pdir_order);
+ pdir_order +=1;
+ pdir_size <<=1;
+ }
+ }
+ } else {
+ /*
+ ** 1MB or 2MB Pdir
+ ** Needs to be aligned on an "odd" 1MB boundary.
+ */
+ unsigned long new_pdir = __get_free_pages(GFP_KERNEL, pdir_order+1); /* 2 or 4MB */
+
+ /* release original */
+ free_pages( pdir_base, pdir_order);
+
+ /* release first 1MB */
+ free_pages(new_pdir, 20-12);
+
+ pdir_base = new_pdir + 1024*1024;
+
+ if (pdir_order > (20-12)) {
+ /*
+ ** 2MB Pdir.
+ **
+ ** Flag tells init_bitmap() to mark bad 128k as used
+ ** and to reduce the size by 128k.
+ */
+ piranha_bad_128k = 1;
+
+ new_pdir += 3*1024*1024;
+ /* release last 1MB */
+ free_pages(new_pdir, 20-12);
+
+ /* release unusable 128KB */
+ free_pages(new_pdir - 128*1024 , 17-12);
+
+ pdir_size -= 128*1024;
+ }
+ }
+
+ memset((void *) pdir_base, 0, pdir_size);
+ return (void *) pdir_base;
+}
+
+/* setup Mercury or Elroy IBASE/IMASK registers. */
+static void setup_ibase_imask(struct parisc_device *sba, struct ioc *ioc, int ioc_num)
+{
+ /* lba_set_iregs() is in drivers/parisc/lba_pci.c */
+ extern void lba_set_iregs(struct parisc_device *, u32, u32);
+ struct device *dev;
+
+ list_for_each_entry(dev, &sba->dev.children, node) {
+ struct parisc_device *lba = to_parisc_device(dev);
+ int rope_num = (lba->hpa >> 13) & 0xf;
+ if (rope_num >> 3 == ioc_num)
+ lba_set_iregs(lba, ioc->ibase, ioc->imask);
+ }
+}
+
+static void
+sba_ioc_init_pluto(struct parisc_device *sba, struct ioc *ioc, int ioc_num)
+{
+ u32 iova_space_mask;
+ u32 iova_space_size;
+ int iov_order, tcnfg;
+#if SBA_AGP_SUPPORT
+ int agp_found = 0;
+#endif
+ /*
+ ** Firmware programs the base and size of a "safe IOVA space"
+ ** (one that doesn't overlap memory or LMMIO space) in the
+ ** IBASE and IMASK registers.
+ */
+ ioc->ibase = READ_REG(ioc->ioc_hpa + IOC_IBASE);
+ iova_space_size = ~(READ_REG(ioc->ioc_hpa + IOC_IMASK) & 0xFFFFFFFFUL) + 1;
+
+ if ((ioc->ibase < 0xfed00000UL) && ((ioc->ibase + iova_space_size) > 0xfee00000UL)) {
+ printk("WARNING: IOV space overlaps local config and interrupt message, truncating\n");
+ iova_space_size /= 2;
+ }
+
+ /*
+ ** iov_order is always based on a 1GB IOVA space since we want to
+ ** turn on the other half for AGP GART.
+ */
+ iov_order = get_order(iova_space_size >> (IOVP_SHIFT - PAGE_SHIFT));
+ ioc->pdir_size = (iova_space_size / IOVP_SIZE) * sizeof(u64);
+
+ DBG_INIT("%s() hpa 0x%lx IOV %dMB (%d bits)\n",
+ __FUNCTION__, ioc->ioc_hpa, iova_space_size >> 20,
+ iov_order + PAGE_SHIFT);
+
+ ioc->pdir_base = (void *) __get_free_pages(GFP_KERNEL,
+ get_order(ioc->pdir_size));
+ if (!ioc->pdir_base)
+ panic("Couldn't allocate I/O Page Table\n");
+
+ memset(ioc->pdir_base, 0, ioc->pdir_size);
+
+ DBG_INIT("%s() pdir %p size %x\n",
+ __FUNCTION__, ioc->pdir_base, ioc->pdir_size);
+
+#if SBA_HINT_SUPPORT
+ ioc->hint_shift_pdir = iov_order + PAGE_SHIFT;
+ ioc->hint_mask_pdir = ~(0x3 << (iov_order + PAGE_SHIFT));
+
+ DBG_INIT(" hint_shift_pdir %x hint_mask_pdir %lx\n",
+ ioc->hint_shift_pdir, ioc->hint_mask_pdir);
+#endif
+
+ WARN_ON((((unsigned long) ioc->pdir_base) & PAGE_MASK) != (unsigned long) ioc->pdir_base);
+ WRITE_REG(virt_to_phys(ioc->pdir_base), ioc->ioc_hpa + IOC_PDIR_BASE);
+
+ /* build IMASK for IOC and Elroy */
+ iova_space_mask = 0xffffffff;
+ iova_space_mask <<= (iov_order + PAGE_SHIFT);
+ ioc->imask = iova_space_mask;
+#ifdef ZX1_SUPPORT
+ ioc->iovp_mask = ~(iova_space_mask + PAGE_SIZE - 1);
+#endif
+ sba_dump_tlb(ioc->ioc_hpa);
+
+ setup_ibase_imask(sba, ioc, ioc_num);
+
+ WRITE_REG(ioc->imask, ioc->ioc_hpa + IOC_IMASK);
+
+#ifdef __LP64__
+ /*
+ ** Setting the upper bits makes checking for bypass addresses
+ ** a little faster later on.
+ */
+ ioc->imask |= 0xFFFFFFFF00000000UL;
+#endif
+
+ /* Set I/O PDIR Page size to system page size */
+ switch (PAGE_SHIFT) {
+ case 12: tcnfg = 0; break; /* 4K */
+ case 13: tcnfg = 1; break; /* 8K */
+ case 14: tcnfg = 2; break; /* 16K */
+ case 16: tcnfg = 3; break; /* 64K */
+ default:
+ panic(__FILE__ "Unsupported system page size %d",
+ 1 << PAGE_SHIFT);
+ break;
+ }
+ WRITE_REG(tcnfg, ioc->ioc_hpa + IOC_TCNFG);
+
+ /*
+ ** Program the IOC's ibase and enable IOVA translation
+ ** Bit zero == enable bit.
+ */
+ WRITE_REG(ioc->ibase | 1, ioc->ioc_hpa + IOC_IBASE);
+
+ /*
+ ** Clear I/O TLB of any possible entries.
+ ** (Yes. This is a bit paranoid...but so what)
+ */
+ WRITE_REG(ioc->ibase | 31, ioc->ioc_hpa + IOC_PCOM);
+
+#if SBA_AGP_SUPPORT
+ /*
+ ** If an AGP device is present, only use half of the IOV space
+ ** for PCI DMA. Unfortunately we can't know ahead of time
+ ** whether GART support will actually be used, for now we
+ ** can just key on any AGP device found in the system.
+ ** We program the next pdir index after we stop w/ a key for
+ ** the GART code to handshake on.
+ */
+ device=NULL;
+ for (lba = sba->child; lba; lba = lba->sibling) {
+ if (IS_QUICKSILVER(lba))
+ break;
+ }
+
+ if (lba) {
+ DBG_INIT("%s: Reserving half of IOVA space for AGP GART support\n", __FUNCTION__);
+ ioc->pdir_size /= 2;
+ ((u64 *)ioc->pdir_base)[PDIR_INDEX(iova_space_size/2)] = SBA_IOMMU_COOKIE;
+ } else {
+ DBG_INIT("%s: No GART needed - no AGP controller found\n", __FUNCTION__);
+ }
+#endif /* 0 */
+
+}
+
+static void
+sba_ioc_init(struct parisc_device *sba, struct ioc *ioc, int ioc_num)
+{
+ u32 iova_space_size, iova_space_mask;
+ unsigned int pdir_size, iov_order;
+
+ /*
+ ** Determine IOVA Space size from memory size.
+ **
+ ** Ideally, PCI drivers would register the maximum number
+ ** of DMA they can have outstanding for each device they
+ ** own. Next best thing would be to guess how much DMA
+ ** can be outstanding based on PCI Class/sub-class. Both
+ ** methods still require some "extra" to support PCI
+ ** Hot-Plug/Removal of PCI cards. (aka PCI OLARD).
+ **
+ ** While we have 32-bits "IOVA" space, top two 2 bits are used
+ ** for DMA hints - ergo only 30 bits max.
+ */
+
+ iova_space_size = (u32) (num_physpages/global_ioc_cnt);
+
+ /* limit IOVA space size to 1MB-1GB */
+ if (iova_space_size < (1 << (20 - PAGE_SHIFT))) {
+ iova_space_size = 1 << (20 - PAGE_SHIFT);
+ }
+#ifdef __LP64__
+ else if (iova_space_size > (1 << (30 - PAGE_SHIFT))) {
+ iova_space_size = 1 << (30 - PAGE_SHIFT);
+ }
+#endif
+
+ /*
+ ** iova space must be log2() in size.
+ ** thus, pdir/res_map will also be log2().
+ ** PIRANHA BUG: Exception is when IO Pdir is 2MB (gets reduced)
+ */
+ iov_order = get_order(iova_space_size << PAGE_SHIFT);
+
+ /* iova_space_size is now bytes, not pages */
+ iova_space_size = 1 << (iov_order + PAGE_SHIFT);
+
+ ioc->pdir_size = pdir_size = (iova_space_size/IOVP_SIZE) * sizeof(u64);
+
+ DBG_INIT("%s() hpa 0x%lx mem %ldMB IOV %dMB (%d bits)\n",
+ __FUNCTION__,
+ ioc->ioc_hpa,
+ (unsigned long) num_physpages >> (20 - PAGE_SHIFT),
+ iova_space_size>>20,
+ iov_order + PAGE_SHIFT);
+
+ ioc->pdir_base = sba_alloc_pdir(pdir_size);
+
+ DBG_INIT("%s() pdir %p size %x\n",
+ __FUNCTION__, ioc->pdir_base, pdir_size);
+
+#if SBA_HINT_SUPPORT
+ /* FIXME : DMA HINTs not used */
+ ioc->hint_shift_pdir = iov_order + PAGE_SHIFT;
+ ioc->hint_mask_pdir = ~(0x3 << (iov_order + PAGE_SHIFT));
+
+ DBG_INIT(" hint_shift_pdir %x hint_mask_pdir %lx\n",
+ ioc->hint_shift_pdir, ioc->hint_mask_pdir);
+#endif
+
+ WRITE_REG64(virt_to_phys(ioc->pdir_base), ioc->ioc_hpa + IOC_PDIR_BASE);
+
+ /* build IMASK for IOC and Elroy */
+ iova_space_mask = 0xffffffff;
+ iova_space_mask <<= (iov_order + PAGE_SHIFT);
+
+ /*
+ ** On C3000 w/512MB mem, HP-UX 10.20 reports:
+ ** ibase=0, imask=0xFE000000, size=0x2000000.
+ */
+ ioc->ibase = 0;
+ ioc->imask = iova_space_mask; /* save it */
+#ifdef ZX1_SUPPORT
+ ioc->iovp_mask = ~(iova_space_mask + PAGE_SIZE - 1);
+#endif
+
+ DBG_INIT("%s() IOV base 0x%lx mask 0x%0lx\n",
+ __FUNCTION__, ioc->ibase, ioc->imask);
+
+ /*
+ ** FIXME: Hint registers are programmed with default hint
+ ** values during boot, so hints should be sane even if we
+ ** can't reprogram them the way drivers want.
+ */
+
+ setup_ibase_imask(sba, ioc, ioc_num);
+
+ /*
+ ** Program the IOC's ibase and enable IOVA translation
+ */
+ WRITE_REG(ioc->ibase | 1, ioc->ioc_hpa+IOC_IBASE);
+ WRITE_REG(ioc->imask, ioc->ioc_hpa+IOC_IMASK);
+
+ /* Set I/O PDIR Page size to 4K */
+ WRITE_REG(0, ioc->ioc_hpa+IOC_TCNFG);
+
+ /*
+ ** Clear I/O TLB of any possible entries.
+ ** (Yes. This is a bit paranoid...but so what)
+ */
+ WRITE_REG(0 | 31, ioc->ioc_hpa+IOC_PCOM);
+
+ ioc->ibase = 0; /* used by SBA_IOVA and related macros */
+
+ DBG_INIT("%s() DONE\n", __FUNCTION__);
+}
+
+
+
+/**************************************************************************
+**
+** SBA initialization code (HW and SW)
+**
+** o identify SBA chip itself
+** o initialize SBA chip modes (HardFail)
+** o initialize SBA chip modes (HardFail)
+** o FIXME: initialize DMA hints for reasonable defaults
+**
+**************************************************************************/
+
+static void __iomem *ioc_remap(struct sba_device *sba_dev, int offset)
+{
+ return ioremap(sba_dev->dev->hpa + offset, SBA_FUNC_SIZE);
+}
+
+static void sba_hw_init(struct sba_device *sba_dev)
+{
+ int i;
+ int num_ioc;
+ u64 ioc_ctl;
+
+ if (!is_pdc_pat()) {
+ /* Shutdown the USB controller on Astro-based workstations.
+ ** Once we reprogram the IOMMU, the next DMA performed by
+ ** USB will HPMC the box. USB is only enabled if a
+ ** keyboard is present and found.
+ **
+ ** With serial console, j6k v5.0 firmware says:
+ ** mem_kbd hpa 0xfee003f8 sba 0x0 pad 0x0 cl_class 0x7
+ **
+ ** FIXME: Using GFX+USB console at power up but direct
+ ** linux to serial console is still broken.
+ ** USB could generate DMA so we must reset USB.
+ ** The proper sequence would be:
+ ** o block console output
+ ** o reset USB device
+ ** o reprogram serial port
+ ** o unblock console output
+ */
+ if (PAGE0->mem_kbd.cl_class == CL_KEYBD) {
+ pdc_io_reset_devices();
+ }
+
+ }
+
+
+#if 0
+printk("sba_hw_init(): mem_boot 0x%x 0x%x 0x%x 0x%x\n", PAGE0->mem_boot.hpa,
+ PAGE0->mem_boot.spa, PAGE0->mem_boot.pad, PAGE0->mem_boot.cl_class);
+
+ /*
+ ** Need to deal with DMA from LAN.
+ ** Maybe use page zero boot device as a handle to talk
+ ** to PDC about which device to shutdown.
+ **
+ ** Netbooting, j6k v5.0 firmware says:
+ ** mem_boot hpa 0xf4008000 sba 0x0 pad 0x0 cl_class 0x1002
+ ** ARGH! invalid class.
+ */
+ if ((PAGE0->mem_boot.cl_class != CL_RANDOM)
+ && (PAGE0->mem_boot.cl_class != CL_SEQU)) {
+ pdc_io_reset();
+ }
+#endif
+
+ if (!IS_PLUTO(sba_dev->iodc)) {
+ ioc_ctl = READ_REG(sba_dev->sba_hpa+IOC_CTRL);
+ DBG_INIT("%s() hpa 0x%lx ioc_ctl 0x%Lx ->",
+ __FUNCTION__, sba_dev->sba_hpa, ioc_ctl);
+ ioc_ctl &= ~(IOC_CTRL_RM | IOC_CTRL_NC | IOC_CTRL_CE);
+ ioc_ctl |= IOC_CTRL_DD | IOC_CTRL_D4 | IOC_CTRL_TC;
+ /* j6700 v1.6 firmware sets 0x294f */
+ /* A500 firmware sets 0x4d */
+
+ WRITE_REG(ioc_ctl, sba_dev->sba_hpa+IOC_CTRL);
+
+#ifdef DEBUG_SBA_INIT
+ ioc_ctl = READ_REG64(sba_dev->sba_hpa+IOC_CTRL);
+ DBG_INIT(" 0x%Lx\n", ioc_ctl);
+#endif
+ } /* if !PLUTO */
+
+ if (IS_ASTRO(sba_dev->iodc)) {
+ int err;
+ /* PAT_PDC (L-class) also reports the same goofy base */
+ sba_dev->ioc[0].ioc_hpa = ioc_remap(sba_dev, ASTRO_IOC_OFFSET);
+ num_ioc = 1;
+
+ sba_dev->chip_resv.name = "Astro Intr Ack";
+ sba_dev->chip_resv.start = PCI_F_EXTEND | 0xfef00000UL;
+ sba_dev->chip_resv.end = PCI_F_EXTEND | (0xff000000UL - 1) ;
+ err = request_resource(&iomem_resource, &(sba_dev->chip_resv));
+ if (err < 0) {
+ BUG();
+ }
+
+ } else if (IS_PLUTO(sba_dev->iodc)) {
+ int err;
+
+ /* We use a negative value for IOC HPA so it gets
+ * corrected when we add it with IKE's IOC offset.
+ * Doesnt look clean, but fewer code.
+ */
+ sba_dev->ioc[0].ioc_hpa = ioc_remap(sba_dev, PLUTO_IOC_OFFSET);
+ num_ioc = 1;
+
+ sba_dev->chip_resv.name = "Pluto Intr/PIOP/VGA";
+ sba_dev->chip_resv.start = PCI_F_EXTEND | 0xfee00000UL;
+ sba_dev->chip_resv.end = PCI_F_EXTEND | (0xff200000UL - 1);
+ err = request_resource(&iomem_resource, &(sba_dev->chip_resv));
+ WARN_ON(err < 0);
+
+ sba_dev->iommu_resv.name = "IOVA Space";
+ sba_dev->iommu_resv.start = 0x40000000UL;
+ sba_dev->iommu_resv.end = 0x50000000UL - 1;
+ err = request_resource(&iomem_resource, &(sba_dev->iommu_resv));
+ WARN_ON(err < 0);
+ } else {
+ /* IS_IKE (ie N-class, L3000, L1500) */
+ sba_dev->ioc[0].ioc_hpa = ioc_remap(sba_dev, IKE_IOC_OFFSET(0));
+ sba_dev->ioc[1].ioc_hpa = ioc_remap(sba_dev, IKE_IOC_OFFSET(1));
+ num_ioc = 2;
+
+ /* TODO - LOOKUP Ike/Stretch chipset mem map */
+ }
+ /* XXX: What about Reo? */
+
+ sba_dev->num_ioc = num_ioc;
+ for (i = 0; i < num_ioc; i++) {
+ /*
+ ** Make sure the box crashes if we get any errors on a rope.
+ */
+ WRITE_REG(HF_ENABLE, sba_dev->ioc[i].ioc_hpa + ROPE0_CTL);
+ WRITE_REG(HF_ENABLE, sba_dev->ioc[i].ioc_hpa + ROPE1_CTL);
+ WRITE_REG(HF_ENABLE, sba_dev->ioc[i].ioc_hpa + ROPE2_CTL);
+ WRITE_REG(HF_ENABLE, sba_dev->ioc[i].ioc_hpa + ROPE3_CTL);
+ WRITE_REG(HF_ENABLE, sba_dev->ioc[i].ioc_hpa + ROPE4_CTL);
+ WRITE_REG(HF_ENABLE, sba_dev->ioc[i].ioc_hpa + ROPE5_CTL);
+ WRITE_REG(HF_ENABLE, sba_dev->ioc[i].ioc_hpa + ROPE6_CTL);
+ WRITE_REG(HF_ENABLE, sba_dev->ioc[i].ioc_hpa + ROPE7_CTL);
+
+ /* flush out the writes */
+ READ_REG(sba_dev->ioc[i].ioc_hpa + ROPE7_CTL);
+
+ DBG_INIT(" ioc[%d] ROPE_CFG 0x%Lx ROPE_DBG 0x%Lx\n",
+ i,
+ READ_REG(sba_dev->ioc[i].ioc_hpa + 0x40),
+ READ_REG(sba_dev->ioc[i].ioc_hpa + 0x50)
+ );
+ DBG_INIT(" STATUS_CONTROL 0x%Lx FLUSH_CTRL 0x%Lx\n",
+ READ_REG(sba_dev->ioc[i].ioc_hpa + 0x108),
+ READ_REG(sba_dev->ioc[i].ioc_hpa + 0x400)
+ );
+
+ if (IS_PLUTO(sba_dev->iodc)) {
+ sba_ioc_init_pluto(sba_dev->dev, &(sba_dev->ioc[i]), i);
+ } else {
+ sba_ioc_init(sba_dev->dev, &(sba_dev->ioc[i]), i);
+ }
+ }
+}
+
+static void
+sba_common_init(struct sba_device *sba_dev)
+{
+ int i;
+
+ /* add this one to the head of the list (order doesn't matter)
+ ** This will be useful for debugging - especially if we get coredumps
+ */
+ sba_dev->next = sba_list;
+ sba_list = sba_dev;
+
+ for(i=0; i< sba_dev->num_ioc; i++) {
+ int res_size;
+#ifdef DEBUG_DMB_TRAP
+ extern void iterate_pages(unsigned long , unsigned long ,
+ void (*)(pte_t * , unsigned long),
+ unsigned long );
+ void set_data_memory_break(pte_t * , unsigned long);
+#endif
+ /* resource map size dictated by pdir_size */
+ res_size = sba_dev->ioc[i].pdir_size/sizeof(u64); /* entries */
+
+ /* Second part of PIRANHA BUG */
+ if (piranha_bad_128k) {
+ res_size -= (128*1024)/sizeof(u64);
+ }
+
+ res_size >>= 3; /* convert bit count to byte count */
+ DBG_INIT("%s() res_size 0x%x\n",
+ __FUNCTION__, res_size);
+
+ sba_dev->ioc[i].res_size = res_size;
+ sba_dev->ioc[i].res_map = (char *) __get_free_pages(GFP_KERNEL, get_order(res_size));
+
+#ifdef DEBUG_DMB_TRAP
+ iterate_pages( sba_dev->ioc[i].res_map, res_size,
+ set_data_memory_break, 0);
+#endif
+
+ if (NULL == sba_dev->ioc[i].res_map)
+ {
+ panic("%s:%s() could not allocate resource map\n",
+ __FILE__, __FUNCTION__ );
+ }
+
+ memset(sba_dev->ioc[i].res_map, 0, res_size);
+ /* next available IOVP - circular search */
+ sba_dev->ioc[i].res_hint = (unsigned long *)
+ &(sba_dev->ioc[i].res_map[L1_CACHE_BYTES]);
+
+#ifdef ASSERT_PDIR_SANITY
+ /* Mark first bit busy - ie no IOVA 0 */
+ sba_dev->ioc[i].res_map[0] = 0x80;
+ sba_dev->ioc[i].pdir_base[0] = 0xeeffc0addbba0080ULL;
+#endif
+
+ /* Third (and last) part of PIRANHA BUG */
+ if (piranha_bad_128k) {
+ /* region from +1408K to +1536 is un-usable. */
+
+ int idx_start = (1408*1024/sizeof(u64)) >> 3;
+ int idx_end = (1536*1024/sizeof(u64)) >> 3;
+ long *p_start = (long *) &(sba_dev->ioc[i].res_map[idx_start]);
+ long *p_end = (long *) &(sba_dev->ioc[i].res_map[idx_end]);
+
+ /* mark that part of the io pdir busy */
+ while (p_start < p_end)
+ *p_start++ = -1;
+
+ }
+
+#ifdef DEBUG_DMB_TRAP
+ iterate_pages( sba_dev->ioc[i].res_map, res_size,
+ set_data_memory_break, 0);
+ iterate_pages( sba_dev->ioc[i].pdir_base, sba_dev->ioc[i].pdir_size,
+ set_data_memory_break, 0);
+#endif
+
+ DBG_INIT("%s() %d res_map %x %p\n",
+ __FUNCTION__, i, res_size, sba_dev->ioc[i].res_map);
+ }
+
+ spin_lock_init(&sba_dev->sba_lock);
+ ioc_needs_fdc = boot_cpu_data.pdc.capabilities & PDC_MODEL_IOPDIR_FDC;
+
+#ifdef DEBUG_SBA_INIT
+ /*
+ * If the PDC_MODEL capabilities has Non-coherent IO-PDIR bit set
+ * (bit #61, big endian), we have to flush and sync every time
+ * IO-PDIR is changed in Ike/Astro.
+ */
+ if (boot_cpu_data.pdc.capabilities & PDC_MODEL_IOPDIR_FDC) {
+ printk(KERN_INFO MODULE_NAME " FDC/SYNC required.\n");
+ } else {
+ printk(KERN_INFO MODULE_NAME " IOC has cache coherent PDIR.\n");
+ }
+#endif
+}
+
+#ifdef CONFIG_PROC_FS
+static int sba_proc_info(char *buf, char **start, off_t offset, int len)
+{
+ struct sba_device *sba_dev = sba_list;
+ struct ioc *ioc = &sba_dev->ioc[0]; /* FIXME: Multi-IOC support! */
+ int total_pages = (int) (ioc->res_size << 3); /* 8 bits per byte */
+ unsigned long i;
+#ifdef SBA_COLLECT_STATS
+ unsigned long avg = 0, min, max;
+#endif
+
+ sprintf(buf, "%s rev %d.%d\n",
+ sba_dev->name,
+ (sba_dev->hw_rev & 0x7) + 1,
+ (sba_dev->hw_rev & 0x18) >> 3
+ );
+ sprintf(buf, "%sIO PDIR size : %d bytes (%d entries)\n",
+ buf,
+ (int) ((ioc->res_size << 3) * sizeof(u64)), /* 8 bits/byte */
+ total_pages);
+
+ sprintf(buf, "%sResource bitmap : %d bytes (%d pages)\n",
+ buf, ioc->res_size, ioc->res_size << 3); /* 8 bits per byte */
+
+ sprintf(buf, "%sLMMIO_BASE/MASK/ROUTE %08x %08x %08x\n",
+ buf,
+ READ_REG32(sba_dev->sba_hpa + LMMIO_DIST_BASE),
+ READ_REG32(sba_dev->sba_hpa + LMMIO_DIST_MASK),
+ READ_REG32(sba_dev->sba_hpa + LMMIO_DIST_ROUTE)
+ );
+
+ for (i=0; i<4; i++)
+ sprintf(buf, "%sDIR%ld_BASE/MASK/ROUTE %08x %08x %08x\n",
+ buf, i,
+ READ_REG32(sba_dev->sba_hpa + LMMIO_DIRECT0_BASE + i*0x18),
+ READ_REG32(sba_dev->sba_hpa + LMMIO_DIRECT0_MASK + i*0x18),
+ READ_REG32(sba_dev->sba_hpa + LMMIO_DIRECT0_ROUTE + i*0x18)
+ );
+
+#ifdef SBA_COLLECT_STATS
+ sprintf(buf, "%sIO PDIR entries : %ld free %ld used (%d%%)\n", buf,
+ total_pages - ioc->used_pages, ioc->used_pages,
+ (int) (ioc->used_pages * 100 / total_pages));
+
+ min = max = ioc->avg_search[0];
+ for (i = 0; i < SBA_SEARCH_SAMPLE; i++) {
+ avg += ioc->avg_search[i];
+ if (ioc->avg_search[i] > max) max = ioc->avg_search[i];
+ if (ioc->avg_search[i] < min) min = ioc->avg_search[i];
+ }
+ avg /= SBA_SEARCH_SAMPLE;
+ sprintf(buf, "%s Bitmap search : %ld/%ld/%ld (min/avg/max CPU Cycles)\n",
+ buf, min, avg, max);
+
+ sprintf(buf, "%spci_map_single(): %12ld calls %12ld pages (avg %d/1000)\n",
+ buf, ioc->msingle_calls, ioc->msingle_pages,
+ (int) ((ioc->msingle_pages * 1000)/ioc->msingle_calls));
+
+ /* KLUGE - unmap_sg calls unmap_single for each mapped page */
+ min = ioc->usingle_calls;
+ max = ioc->usingle_pages - ioc->usg_pages;
+ sprintf(buf, "%spci_unmap_single: %12ld calls %12ld pages (avg %d/1000)\n",
+ buf, min, max,
+ (int) ((max * 1000)/min));
+
+ sprintf(buf, "%spci_map_sg() : %12ld calls %12ld pages (avg %d/1000)\n",
+ buf, ioc->msg_calls, ioc->msg_pages,
+ (int) ((ioc->msg_pages * 1000)/ioc->msg_calls));
+
+ sprintf(buf, "%spci_unmap_sg() : %12ld calls %12ld pages (avg %d/1000)\n",
+ buf, ioc->usg_calls, ioc->usg_pages,
+ (int) ((ioc->usg_pages * 1000)/ioc->usg_calls));
+#endif
+
+ return strlen(buf);
+}
+
+#if 0
+/* XXX too much output - exceeds 4k limit and needs to be re-written */
+static int
+sba_resource_map(char *buf, char **start, off_t offset, int len)
+{
+ struct sba_device *sba_dev = sba_list;
+ struct ioc *ioc = &sba_dev->ioc[0]; /* FIXME: Mutli-IOC suppoer! */
+ unsigned int *res_ptr = (unsigned int *)ioc->res_map;
+ int i;
+
+ buf[0] = '\0';
+ for(i = 0; i < (ioc->res_size / sizeof(unsigned int)); ++i, ++res_ptr) {
+ if ((i & 7) == 0)
+ strcat(buf,"\n ");
+ sprintf(buf, "%s %08x", buf, *res_ptr);
+ }
+ strcat(buf, "\n");
+
+ return strlen(buf);
+}
+#endif /* 0 */
+#endif /* CONFIG_PROC_FS */
+
+static struct parisc_device_id sba_tbl[] = {
+ { HPHW_IOA, HVERSION_REV_ANY_ID, ASTRO_RUNWAY_PORT, 0xb },
+ { HPHW_BCPORT, HVERSION_REV_ANY_ID, IKE_MERCED_PORT, 0xc },
+ { HPHW_BCPORT, HVERSION_REV_ANY_ID, REO_MERCED_PORT, 0xc },
+ { HPHW_BCPORT, HVERSION_REV_ANY_ID, REOG_MERCED_PORT, 0xc },
+ { HPHW_IOA, HVERSION_REV_ANY_ID, PLUTO_MCKINLEY_PORT, 0xc },
+ { 0, }
+};
+
+int sba_driver_callback(struct parisc_device *);
+
+static struct parisc_driver sba_driver = {
+ .name = MODULE_NAME,
+ .id_table = sba_tbl,
+ .probe = sba_driver_callback,
+};
+
+/*
+** Determine if sba should claim this chip (return 0) or not (return 1).
+** If so, initialize the chip and tell other partners in crime they
+** have work to do.
+*/
+int
+sba_driver_callback(struct parisc_device *dev)
+{
+ struct sba_device *sba_dev;
+ u32 func_class;
+ int i;
+ char *version;
+ void __iomem *sba_addr = ioremap(dev->hpa, SBA_FUNC_SIZE);
+
+ sba_dump_ranges(sba_addr);
+
+ /* Read HW Rev First */
+ func_class = READ_REG(sba_addr + SBA_FCLASS);
+
+ if (IS_ASTRO(&dev->id)) {
+ unsigned long fclass;
+ static char astro_rev[]="Astro ?.?";
+
+ /* Astro is broken...Read HW Rev First */
+ fclass = READ_REG(sba_addr);
+
+ astro_rev[6] = '1' + (char) (fclass & 0x7);
+ astro_rev[8] = '0' + (char) ((fclass & 0x18) >> 3);
+ version = astro_rev;
+
+ } else if (IS_IKE(&dev->id)) {
+ static char ike_rev[] = "Ike rev ?";
+ ike_rev[8] = '0' + (char) (func_class & 0xff);
+ version = ike_rev;
+ } else if (IS_PLUTO(&dev->id)) {
+ static char pluto_rev[]="Pluto ?.?";
+ pluto_rev[6] = '0' + (char) ((func_class & 0xf0) >> 4);
+ pluto_rev[8] = '0' + (char) (func_class & 0x0f);
+ version = pluto_rev;
+ } else {
+ static char reo_rev[] = "REO rev ?";
+ reo_rev[8] = '0' + (char) (func_class & 0xff);
+ version = reo_rev;
+ }
+
+ if (!global_ioc_cnt) {
+ global_ioc_cnt = count_parisc_driver(&sba_driver);
+
+ /* Astro and Pluto have one IOC per SBA */
+ if ((!IS_ASTRO(&dev->id)) || (!IS_PLUTO(&dev->id)))
+ global_ioc_cnt *= 2;
+ }
+
+ printk(KERN_INFO "%s found %s at 0x%lx\n",
+ MODULE_NAME, version, dev->hpa);
+
+ sba_dev = kmalloc(sizeof(struct sba_device), GFP_KERNEL);
+ if (!sba_dev) {
+ printk(KERN_ERR MODULE_NAME " - couldn't alloc sba_device\n");
+ return -ENOMEM;
+ }
+
+ parisc_set_drvdata(dev, sba_dev);
+ memset(sba_dev, 0, sizeof(struct sba_device));
+
+ for(i=0; i<MAX_IOC; i++)
+ spin_lock_init(&(sba_dev->ioc[i].res_lock));
+
+ sba_dev->dev = dev;
+ sba_dev->hw_rev = func_class;
+ sba_dev->iodc = &dev->id;
+ sba_dev->name = dev->name;
+ sba_dev->sba_hpa = sba_addr;
+
+ sba_get_pat_resources(sba_dev);
+ sba_hw_init(sba_dev);
+ sba_common_init(sba_dev);
+
+ hppa_dma_ops = &sba_ops;
+
+#ifdef CONFIG_PROC_FS
+ if (IS_ASTRO(&dev->id)) {
+ create_proc_info_entry("Astro", 0, proc_runway_root, sba_proc_info);
+ } else if (IS_IKE(&dev->id)) {
+ create_proc_info_entry("Ike", 0, proc_runway_root, sba_proc_info);
+ } else if (IS_PLUTO(&dev->id)) {
+ create_proc_info_entry("Pluto", 0, proc_mckinley_root, sba_proc_info);
+ } else {
+ create_proc_info_entry("Reo", 0, proc_runway_root, sba_proc_info);
+ }
+#if 0
+ create_proc_info_entry("bitmap", 0, proc_runway_root, sba_resource_map);
+#endif
+#endif
+ parisc_vmerge_boundary = IOVP_SIZE;
+ parisc_vmerge_max_size = IOVP_SIZE * BITS_PER_LONG;
+ parisc_has_iommu();
+ return 0;
+}
+
+/*
+** One time initialization to let the world know the SBA was found.
+** This is the only routine which is NOT static.
+** Must be called exactly once before pci_init().
+*/
+void __init sba_init(void)
+{
+ register_parisc_driver(&sba_driver);
+}
+
+
+/**
+ * sba_get_iommu - Assign the iommu pointer for the pci bus controller.
+ * @dev: The parisc device.
+ *
+ * Returns the appropriate IOMMU data for the given parisc PCI controller.
+ * This is cached and used later for PCI DMA Mapping.
+ */
+void * sba_get_iommu(struct parisc_device *pci_hba)
+{
+ struct parisc_device *sba_dev = parisc_parent(pci_hba);
+ struct sba_device *sba = sba_dev->dev.driver_data;
+ char t = sba_dev->id.hw_type;
+ int iocnum = (pci_hba->hw_path >> 3); /* rope # */
+
+ WARN_ON((t != HPHW_IOA) && (t != HPHW_BCPORT));
+
+ return &(sba->ioc[iocnum]);
+}
+
+
+/**
+ * sba_directed_lmmio - return first directed LMMIO range routed to rope
+ * @pa_dev: The parisc device.
+ * @r: resource PCI host controller wants start/end fields assigned.
+ *
+ * For the given parisc PCI controller, determine if any direct ranges
+ * are routed down the corresponding rope.
+ */
+void sba_directed_lmmio(struct parisc_device *pci_hba, struct resource *r)
+{
+ struct parisc_device *sba_dev = parisc_parent(pci_hba);
+ struct sba_device *sba = sba_dev->dev.driver_data;
+ char t = sba_dev->id.hw_type;
+ int i;
+ int rope = (pci_hba->hw_path & (ROPES_PER_IOC-1)); /* rope # */
+
+ if ((t!=HPHW_IOA) && (t!=HPHW_BCPORT))
+ BUG();
+
+ r->start = r->end = 0;
+
+ /* Astro has 4 directed ranges. Not sure about Ike/Pluto/et al */
+ for (i=0; i<4; i++) {
+ int base, size;
+ void __iomem *reg = sba->sba_hpa + i*0x18;
+
+ base = READ_REG32(reg + LMMIO_DIRECT0_BASE);
+ if ((base & 1) == 0)
+ continue; /* not enabled */
+
+ size = READ_REG32(reg + LMMIO_DIRECT0_ROUTE);
+
+ if ((size & (ROPES_PER_IOC-1)) != rope)
+ continue; /* directed down different rope */
+
+ r->start = (base & ~1UL) | PCI_F_EXTEND;
+ size = ~ READ_REG32(reg + LMMIO_DIRECT0_MASK);
+ r->end = r->start + size;
+ }
+}
+
+
+/**
+ * sba_distributed_lmmio - return portion of distributed LMMIO range
+ * @pa_dev: The parisc device.
+ * @r: resource PCI host controller wants start/end fields assigned.
+ *
+ * For the given parisc PCI controller, return portion of distributed LMMIO
+ * range. The distributed LMMIO is always present and it's just a question
+ * of the base address and size of the range.
+ */
+void sba_distributed_lmmio(struct parisc_device *pci_hba, struct resource *r )
+{
+ struct parisc_device *sba_dev = parisc_parent(pci_hba);
+ struct sba_device *sba = sba_dev->dev.driver_data;
+ char t = sba_dev->id.hw_type;
+ int base, size;
+ int rope = (pci_hba->hw_path & (ROPES_PER_IOC-1)); /* rope # */
+
+ if ((t!=HPHW_IOA) && (t!=HPHW_BCPORT))
+ BUG();
+
+ r->start = r->end = 0;
+
+ base = READ_REG32(sba->sba_hpa + LMMIO_DIST_BASE);
+ if ((base & 1) == 0) {
+ BUG(); /* Gah! Distr Range wasn't enabled! */
+ return;
+ }
+
+ r->start = (base & ~1UL) | PCI_F_EXTEND;
+
+ size = (~READ_REG32(sba->sba_hpa + LMMIO_DIST_MASK)) / ROPES_PER_IOC;
+ r->start += rope * (size + 1); /* adjust base for this rope */
+ r->end = r->start + size;
+}
diff --git a/drivers/parisc/superio.c b/drivers/parisc/superio.c
new file mode 100644
index 000000000000..e0efed796b92
--- /dev/null
+++ b/drivers/parisc/superio.c
@@ -0,0 +1,508 @@
+/* National Semiconductor NS87560UBD Super I/O controller used in
+ * HP [BCJ]x000 workstations.
+ *
+ * This chip is a horrid piece of engineering, and National
+ * denies any knowledge of its existence. Thus no datasheet is
+ * available off www.national.com.
+ *
+ * (C) Copyright 2000 Linuxcare, Inc.
+ * (C) Copyright 2000 Linuxcare Canada, Inc.
+ * (C) Copyright 2000 Martin K. Petersen <mkp@linuxcare.com>
+ * (C) Copyright 2000 Alex deVries <alex@onefishtwo.ca>
+ * (C) Copyright 2001 John Marvin <jsm fc hp com>
+ * (C) Copyright 2003 Grant Grundler <grundler parisc-linux org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * The initial version of this is by Martin Peterson. Alex deVries
+ * has spent a bit of time trying to coax it into working.
+ *
+ * Major changes to get basic interrupt infrastructure working to
+ * hopefully be able to support all SuperIO devices. Currently
+ * works with serial. -- John Marvin <jsm@fc.hp.com>
+ */
+
+
+/* NOTES:
+ *
+ * Function 0 is an IDE controller. It is identical to a PC87415 IDE
+ * controller (and identifies itself as such).
+ *
+ * Function 1 is a "Legacy I/O" controller. Under this function is a
+ * whole mess of legacy I/O peripherals. Of course, HP hasn't enabled
+ * all the functionality in hardware, but the following is available:
+ *
+ * Two 16550A compatible serial controllers
+ * An IEEE 1284 compatible parallel port
+ * A floppy disk controller
+ *
+ * Function 2 is a USB controller.
+ *
+ * We must be incredibly careful during initialization. Since all
+ * interrupts are routed through function 1 (which is not allowed by
+ * the PCI spec), we need to program the PICs on the legacy I/O port
+ * *before* we attempt to set up IDE and USB. @#$!&
+ *
+ * According to HP, devices are only enabled by firmware if they have
+ * a physical device connected.
+ *
+ * Configuration register bits:
+ * 0x5A: FDC, SP1, IDE1, SP2, IDE2, PAR, Reserved, P92
+ * 0x5B: RTC, 8259, 8254, DMA1, DMA2, KBC, P61, APM
+ *
+ */
+
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/serial.h>
+#include <linux/pci.h>
+#include <linux/parport.h>
+#include <linux/parport_pc.h>
+#include <linux/termios.h>
+#include <linux/tty.h>
+#include <linux/serial_core.h>
+#include <linux/delay.h>
+
+#include <asm/io.h>
+#include <asm/hardware.h>
+#include <asm/superio.h>
+
+static struct superio_device sio_dev;
+
+
+#undef DEBUG_SUPERIO_INIT
+
+#ifdef DEBUG_SUPERIO_INIT
+#define DBG_INIT(x...) printk(x)
+#else
+#define DBG_INIT(x...)
+#endif
+
+static irqreturn_t
+superio_interrupt(int parent_irq, void *devp, struct pt_regs *regs)
+{
+ u8 results;
+ u8 local_irq;
+
+ /* Poll the 8259 to see if there's an interrupt. */
+ outb (OCW3_POLL,IC_PIC1+0);
+
+ results = inb(IC_PIC1+0);
+
+ /*
+ * Bit 7: 1 = active Interrupt; 0 = no Interrupt pending
+ * Bits 6-3: zero
+ * Bits 2-0: highest priority, active requesting interrupt ID (0-7)
+ */
+ if ((results & 0x80) == 0) {
+ /* I suspect "spurious" interrupts are from unmasking an IRQ.
+ * We don't know if an interrupt was/is pending and thus
+ * just call the handler for that IRQ as if it were pending.
+ */
+ return IRQ_NONE;
+ }
+
+ /* Check to see which device is interrupting */
+ local_irq = results & 0x0f;
+
+ if (local_irq == 2 || local_irq > 7) {
+ printk(KERN_ERR "SuperIO: slave interrupted!\n");
+ return IRQ_HANDLED;
+ }
+
+ if (local_irq == 7) {
+
+ /* Could be spurious. Check in service bits */
+
+ outb(OCW3_ISR,IC_PIC1+0);
+ results = inb(IC_PIC1+0);
+ if ((results & 0x80) == 0) { /* if ISR7 not set: spurious */
+ printk(KERN_WARNING "SuperIO: spurious interrupt!\n");
+ return IRQ_HANDLED;
+ }
+ }
+
+ /* Call the appropriate device's interrupt */
+ __do_IRQ(local_irq, regs);
+
+ /* set EOI - forces a new interrupt if a lower priority device
+ * still needs service.
+ */
+ outb((OCW2_SEOI|local_irq),IC_PIC1 + 0);
+ return IRQ_HANDLED;
+}
+
+/* Initialize Super I/O device */
+
+static void __devinit
+superio_init(struct superio_device *sio)
+{
+ struct pci_dev *pdev = sio->lio_pdev;
+ u16 word;
+
+ if (sio->suckyio_irq_enabled)
+ return;
+
+ if (!pdev) BUG();
+ if (!sio->usb_pdev) BUG();
+
+ /* use the IRQ iosapic found for USB INT D... */
+ pdev->irq = sio->usb_pdev->irq;
+
+ /* ...then properly fixup the USB to point at suckyio PIC */
+ sio->usb_pdev->irq = superio_fixup_irq(sio->usb_pdev);
+
+ printk (KERN_INFO "SuperIO: Found NS87560 Legacy I/O device at %s (IRQ %i) \n",
+ pci_name(pdev),pdev->irq);
+
+ pci_read_config_dword (pdev, SIO_SP1BAR, &sio->sp1_base);
+ sio->sp1_base &= ~1;
+ printk (KERN_INFO "SuperIO: Serial port 1 at 0x%x\n", sio->sp1_base);
+
+ pci_read_config_dword (pdev, SIO_SP2BAR, &sio->sp2_base);
+ sio->sp2_base &= ~1;
+ printk (KERN_INFO "SuperIO: Serial port 2 at 0x%x\n", sio->sp2_base);
+
+ pci_read_config_dword (pdev, SIO_PPBAR, &sio->pp_base);
+ sio->pp_base &= ~1;
+ printk (KERN_INFO "SuperIO: Parallel port at 0x%x\n", sio->pp_base);
+
+ pci_read_config_dword (pdev, SIO_FDCBAR, &sio->fdc_base);
+ sio->fdc_base &= ~1;
+ printk (KERN_INFO "SuperIO: Floppy controller at 0x%x\n", sio->fdc_base);
+ pci_read_config_dword (pdev, SIO_ACPIBAR, &sio->acpi_base);
+ sio->acpi_base &= ~1;
+ printk (KERN_INFO "SuperIO: ACPI at 0x%x\n", sio->acpi_base);
+
+ request_region (IC_PIC1, 0x1f, "pic1");
+ request_region (IC_PIC2, 0x1f, "pic2");
+ request_region (sio->acpi_base, 0x1f, "acpi");
+
+ /* Enable the legacy I/O function */
+ pci_read_config_word (pdev, PCI_COMMAND, &word);
+ word |= PCI_COMMAND_SERR | PCI_COMMAND_PARITY | PCI_COMMAND_IO;
+ pci_write_config_word (pdev, PCI_COMMAND, word);
+
+ pci_set_master (pdev);
+ pci_enable_device(pdev);
+
+ /*
+ * Next project is programming the onboard interrupt controllers.
+ * PDC hasn't done this for us, since it's using polled I/O.
+ *
+ * XXX Use dword writes to avoid bugs in Elroy or Suckyio Config
+ * space access. PCI is by nature a 32-bit bus and config
+ * space can be sensitive to that.
+ */
+
+ /* 0x64 - 0x67 :
+ DMA Rtg 2
+ DMA Rtg 3
+ DMA Chan Ctl
+ TRIGGER_1 == 0x82 USB & IDE level triggered, rest to edge
+ */
+ pci_write_config_dword (pdev, 0x64, 0x82000000U);
+
+ /* 0x68 - 0x6b :
+ TRIGGER_2 == 0x00 all edge triggered (not used)
+ CFG_IR_SER == 0x43 SerPort1 = IRQ3, SerPort2 = IRQ4
+ CFG_IR_PF == 0x65 ParPort = IRQ5, FloppyCtlr = IRQ6
+ CFG_IR_IDE == 0x07 IDE1 = IRQ7, reserved
+ */
+ pci_write_config_dword (pdev, TRIGGER_2, 0x07654300U);
+
+ /* 0x6c - 0x6f :
+ CFG_IR_INTAB == 0x00
+ CFG_IR_INTCD == 0x10 USB = IRQ1
+ CFG_IR_PS2 == 0x00
+ CFG_IR_FXBUS == 0x00
+ */
+ pci_write_config_dword (pdev, CFG_IR_INTAB, 0x00001000U);
+
+ /* 0x70 - 0x73 :
+ CFG_IR_USB == 0x00 not used. USB is connected to INTD.
+ CFG_IR_ACPI == 0x00 not used.
+ DMA Priority == 0x4c88 Power on default value. NFC.
+ */
+ pci_write_config_dword (pdev, CFG_IR_USB, 0x4c880000U);
+
+ /* PIC1 Initialization Command Word register programming */
+ outb (0x11,IC_PIC1+0); /* ICW1: ICW4 write req | ICW1 */
+ outb (0x00,IC_PIC1+1); /* ICW2: interrupt vector table - not used */
+ outb (0x04,IC_PIC1+1); /* ICW3: Cascade */
+ outb (0x01,IC_PIC1+1); /* ICW4: x86 mode */
+
+ /* PIC1 Program Operational Control Words */
+ outb (0xff,IC_PIC1+1); /* OCW1: Mask all interrupts */
+ outb (0xc2,IC_PIC1+0); /* OCW2: priority (3-7,0-2) */
+
+ /* PIC2 Initialization Command Word register programming */
+ outb (0x11,IC_PIC2+0); /* ICW1: ICW4 write req | ICW1 */
+ outb (0x00,IC_PIC2+1); /* ICW2: N/A */
+ outb (0x02,IC_PIC2+1); /* ICW3: Slave ID code */
+ outb (0x01,IC_PIC2+1); /* ICW4: x86 mode */
+
+ /* Program Operational Control Words */
+ outb (0xff,IC_PIC1+1); /* OCW1: Mask all interrupts */
+ outb (0x68,IC_PIC1+0); /* OCW3: OCW3 select | ESMM | SMM */
+
+ /* Write master mask reg */
+ outb (0xff,IC_PIC1+1);
+
+ /* Setup USB power regulation */
+ outb(1, sio->acpi_base + USB_REG_CR);
+ if (inb(sio->acpi_base + USB_REG_CR) & 1)
+ printk(KERN_INFO "SuperIO: USB regulator enabled\n");
+ else
+ printk(KERN_ERR "USB regulator not initialized!\n");
+
+ if (request_irq(pdev->irq, superio_interrupt, SA_INTERRUPT,
+ "SuperIO", (void *)sio)) {
+
+ printk(KERN_ERR "SuperIO: could not get irq\n");
+ BUG();
+ return;
+ }
+
+ sio->suckyio_irq_enabled = 1;
+}
+
+
+static void superio_disable_irq(unsigned int irq)
+{
+ u8 r8;
+
+ if ((irq < 1) || (irq == 2) || (irq > 7)) {
+ printk(KERN_ERR "SuperIO: Illegal irq number.\n");
+ BUG();
+ return;
+ }
+
+ /* Mask interrupt */
+
+ r8 = inb(IC_PIC1+1);
+ r8 |= (1 << irq);
+ outb (r8,IC_PIC1+1);
+}
+
+static void superio_enable_irq(unsigned int irq)
+{
+ u8 r8;
+
+ if ((irq < 1) || (irq == 2) || (irq > 7)) {
+ printk(KERN_ERR "SuperIO: Illegal irq number (%d).\n", irq);
+ BUG();
+ return;
+ }
+
+ /* Unmask interrupt */
+ r8 = inb(IC_PIC1+1);
+ r8 &= ~(1 << irq);
+ outb (r8,IC_PIC1+1);
+}
+
+static unsigned int superio_startup_irq(unsigned int irq)
+{
+ superio_enable_irq(irq);
+ return 0;
+}
+
+static struct hw_interrupt_type superio_interrupt_type = {
+ .typename = "SuperIO",
+ .startup = superio_startup_irq,
+ .shutdown = superio_disable_irq,
+ .enable = superio_enable_irq,
+ .disable = superio_disable_irq,
+ .ack = no_ack_irq,
+ .end = no_end_irq,
+};
+
+#ifdef DEBUG_SUPERIO_INIT
+static unsigned short expected_device[3] = {
+ PCI_DEVICE_ID_NS_87415,
+ PCI_DEVICE_ID_NS_87560_LIO,
+ PCI_DEVICE_ID_NS_87560_USB
+};
+#endif
+
+int superio_fixup_irq(struct pci_dev *pcidev)
+{
+ int local_irq, i;
+
+#ifdef DEBUG_SUPERIO_INIT
+ int fn;
+ fn = PCI_FUNC(pcidev->devfn);
+
+ /* Verify the function number matches the expected device id. */
+ if (expected_device[fn] != pcidev->device) {
+ BUG();
+ return -1;
+ }
+ printk("superio_fixup_irq(%s) ven 0x%x dev 0x%x from %p\n",
+ pci_name(pcidev),
+ pcidev->vendor, pcidev->device,
+ __builtin_return_address(0));
+#endif
+
+ for (i = 0; i < 16; i++) {
+ irq_desc[i].handler = &superio_interrupt_type;
+ }
+
+ /*
+ * We don't allocate a SuperIO irq for the legacy IO function,
+ * since it is a "bridge". Instead, we will allocate irq's for
+ * each legacy device as they are initialized.
+ */
+
+ switch(pcidev->device) {
+ case PCI_DEVICE_ID_NS_87415: /* Function 0 */
+ local_irq = IDE_IRQ;
+ break;
+ case PCI_DEVICE_ID_NS_87560_LIO: /* Function 1 */
+ sio_dev.lio_pdev = pcidev; /* save for superio_init() */
+ return -1;
+ case PCI_DEVICE_ID_NS_87560_USB: /* Function 2 */
+ sio_dev.usb_pdev = pcidev; /* save for superio_init() */
+ local_irq = USB_IRQ;
+ break;
+ default:
+ local_irq = -1;
+ BUG();
+ break;
+ }
+
+ return local_irq;
+}
+
+static struct uart_port serial[] = {
+ {
+ .iotype = UPIO_PORT,
+ .line = 0,
+ .type = PORT_16550A,
+ .uartclk = 115200*16,
+ .fifosize = 16,
+ },
+ {
+ .iotype = UPIO_PORT,
+ .line = 1,
+ .type = PORT_16550A,
+ .uartclk = 115200*16,
+ .fifosize = 16,
+ }
+};
+
+static void __devinit superio_serial_init(void)
+{
+#ifdef CONFIG_SERIAL_8250
+ int retval;
+
+ serial[0].iobase = sio_dev.sp1_base;
+ serial[0].irq = SP1_IRQ;
+
+ retval = early_serial_setup(&serial[0]);
+ if (retval < 0) {
+ printk(KERN_WARNING "SuperIO: Register Serial #0 failed.\n");
+ return;
+ }
+
+ serial[1].iobase = sio_dev.sp2_base;
+ serial[1].irq = SP2_IRQ;
+ retval = early_serial_setup(&serial[1]);
+
+ if (retval < 0)
+ printk(KERN_WARNING "SuperIO: Register Serial #1 failed.\n");
+#endif /* CONFIG_SERIAL_8250 */
+}
+
+
+static void __devinit superio_parport_init(void)
+{
+#ifdef CONFIG_PARPORT_PC
+ if (!parport_pc_probe_port(sio_dev.pp_base,
+ 0 /*base_hi*/,
+ PAR_IRQ,
+ PARPORT_DMA_NONE /* dma */,
+ NULL /*struct pci_dev* */) )
+
+ printk(KERN_WARNING "SuperIO: Probing parallel port failed.\n");
+#endif /* CONFIG_PARPORT_PC */
+}
+
+
+static void superio_fixup_pci(struct pci_dev *pdev)
+{
+ u8 prog;
+
+ pdev->class |= 0x5;
+ pci_write_config_byte(pdev, PCI_CLASS_PROG, pdev->class);
+
+ pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
+ printk("PCI: Enabled native mode for NS87415 (pif=0x%x)\n", prog);
+}
+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_87415, superio_fixup_pci);
+
+
+static int __devinit superio_probe(struct pci_dev *dev, const struct pci_device_id *id)
+{
+
+ /*
+ ** superio_probe(00:0e.0) ven 0x100b dev 0x2 sv 0x0 sd 0x0 class 0x1018a
+ ** superio_probe(00:0e.1) ven 0x100b dev 0xe sv 0x0 sd 0x0 class 0x68000
+ ** superio_probe(00:0e.2) ven 0x100b dev 0x12 sv 0x0 sd 0x0 class 0xc0310
+ */
+ DBG_INIT("superio_probe(%s) ven 0x%x dev 0x%x sv 0x%x sd 0x%x class 0x%x\n",
+ pci_name(dev),
+ dev->vendor, dev->device,
+ dev->subsystem_vendor, dev->subsystem_device,
+ dev->class);
+
+ superio_init(&sio_dev);
+
+ if (dev->device == PCI_DEVICE_ID_NS_87560_LIO) { /* Function 1 */
+ superio_parport_init();
+ superio_serial_init();
+ /* REVISIT XXX : superio_fdc_init() ? */
+ return 0;
+ } else if (dev->device == PCI_DEVICE_ID_NS_87415) { /* Function 0 */
+ DBG_INIT("superio_probe: ignoring IDE 87415\n");
+ } else if (dev->device == PCI_DEVICE_ID_NS_87560_USB) { /* Function 2 */
+ DBG_INIT("superio_probe: ignoring USB OHCI controller\n");
+ } else {
+ DBG_INIT("superio_probe: WTF? Fire Extinguisher?\n");
+ }
+
+ /* Let appropriate other driver claim this device. */
+ return -ENODEV;
+}
+
+static struct pci_device_id superio_tbl[] = {
+ { PCI_VENDOR_ID_NS, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
+ { 0, }
+};
+
+static struct pci_driver superio_driver = {
+ .name = "SuperIO",
+ .id_table = superio_tbl,
+ .probe = superio_probe,
+};
+
+static int __init superio_modinit(void)
+{
+ return pci_register_driver(&superio_driver);
+}
+
+static void __exit superio_exit(void)
+{
+ pci_unregister_driver(&superio_driver);
+}
+
+
+module_init(superio_modinit);
+module_exit(superio_exit);
diff --git a/drivers/parisc/wax.c b/drivers/parisc/wax.c
new file mode 100644
index 000000000000..e547d7d024d8
--- /dev/null
+++ b/drivers/parisc/wax.c
@@ -0,0 +1,140 @@
+/*
+ * WAX Device Driver
+ *
+ * (c) Copyright 2000 The Puffin Group Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * by Helge Deller <deller@gmx.de>
+ */
+
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/types.h>
+
+#include <asm/io.h>
+#include <asm/hardware.h>
+
+#include "gsc.h"
+
+#define WAX_GSC_IRQ 7 /* Hardcoded Interrupt for GSC */
+
+static void wax_choose_irq(struct parisc_device *dev, void *ctrl)
+{
+ int irq;
+
+ switch (dev->id.sversion) {
+ case 0x73: irq = 1; break; /* i8042 General */
+ case 0x8c: irq = 6; break; /* Serial */
+ case 0x90: irq = 10; break; /* EISA */
+ default: return; /* Unknown */
+ }
+
+ gsc_asic_assign_irq(ctrl, irq, &dev->irq);
+
+ switch (dev->id.sversion) {
+ case 0x73: irq = 2; break; /* i8042 High-priority */
+ case 0x90: irq = 0; break; /* EISA NMI */
+ default: return; /* No secondary IRQ */
+ }
+
+ gsc_asic_assign_irq(ctrl, irq, &dev->aux_irq);
+}
+
+static void __init
+wax_init_irq(struct gsc_asic *wax)
+{
+ unsigned long base = wax->hpa;
+
+ /* Wax-off */
+ gsc_writel(0x00000000, base+OFFSET_IMR);
+
+ /* clear pending interrupts */
+ gsc_readl(base+OFFSET_IRR);
+
+ /* We're not really convinced we want to reset the onboard
+ * devices. Firmware does it for us...
+ */
+
+ /* Resets */
+// gsc_writel(0xFFFFFFFF, base+0x1000); /* HIL */
+// gsc_writel(0xFFFFFFFF, base+0x2000); /* RS232-B on Wax */
+}
+
+int __init
+wax_init_chip(struct parisc_device *dev)
+{
+ struct gsc_asic *wax;
+ struct parisc_device *parent;
+ struct gsc_irq gsc_irq;
+ int ret;
+
+ wax = kmalloc(sizeof(*wax), GFP_KERNEL);
+ if (!wax)
+ return -ENOMEM;
+
+ wax->name = "wax";
+ wax->hpa = dev->hpa;
+
+ wax->version = 0; /* gsc_readb(wax->hpa+WAX_VER); */
+ printk(KERN_INFO "%s at 0x%lx found.\n", wax->name, wax->hpa);
+
+ /* Stop wax hissing for a bit */
+ wax_init_irq(wax);
+
+ /* the IRQ wax should use */
+ dev->irq = gsc_claim_irq(&gsc_irq, WAX_GSC_IRQ);
+ if (dev->irq < 0) {
+ printk(KERN_ERR "%s(): cannot get GSC irq\n",
+ __FUNCTION__);
+ kfree(wax);
+ return -EBUSY;
+ }
+
+ wax->eim = ((u32) gsc_irq.txn_addr) | gsc_irq.txn_data;
+
+ ret = request_irq(gsc_irq.irq, gsc_asic_intr, 0, "wax", wax);
+ if (ret < 0) {
+ kfree(wax);
+ return ret;
+ }
+
+ /* enable IRQ's for devices below WAX */
+ gsc_writel(wax->eim, wax->hpa + OFFSET_IAR);
+
+ /* Done init'ing, register this driver */
+ ret = gsc_common_setup(dev, wax);
+ if (ret) {
+ kfree(wax);
+ return ret;
+ }
+
+ gsc_fixup_irqs(dev, wax, wax_choose_irq);
+ /* On 715-class machines, Wax EISA is a sibling of Wax, not a child. */
+ parent = parisc_parent(dev);
+ if (parent->id.hw_type != HPHW_IOA) {
+ gsc_fixup_irqs(parent, wax, wax_choose_irq);
+ }
+
+ return ret;
+}
+
+static struct parisc_device_id wax_tbl[] = {
+ { HPHW_BA, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0008e },
+ { 0, }
+};
+
+MODULE_DEVICE_TABLE(parisc, wax_tbl);
+
+struct parisc_driver wax_driver = {
+ .name = "wax",
+ .id_table = wax_tbl,
+ .probe = wax_init_chip,
+};

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