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-rw-r--r--drivers/scsi/megaraid/megaraid_ioctl.h296
1 files changed, 296 insertions, 0 deletions
diff --git a/drivers/scsi/megaraid/megaraid_ioctl.h b/drivers/scsi/megaraid/megaraid_ioctl.h
new file mode 100644
index 000000000000..bdaee144a1c3
--- /dev/null
+++ b/drivers/scsi/megaraid/megaraid_ioctl.h
@@ -0,0 +1,296 @@
+/*
+ *
+ * Linux MegaRAID device driver
+ *
+ * Copyright (c) 2003-2004 LSI Logic Corporation.
+ *
+ * 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.
+ *
+ * FILE : megaraid_ioctl.h
+ *
+ * Definitions to interface with user level applications
+ */
+
+#ifndef _MEGARAID_IOCTL_H_
+#define _MEGARAID_IOCTL_H_
+
+#include <linux/types.h>
+#include <asm/semaphore.h>
+
+#include "mbox_defs.h"
+
+/**
+ * con_log() - console log routine
+ * @param level : indicates the severity of the message.
+ * @fparam mt : format string
+ *
+ * con_log displays the error messages on the console based on the current
+ * debug level. Also it attaches the appropriate kernel severity level with
+ * the message.
+ *
+ *
+ * consolge messages debug levels
+ */
+#define CL_ANN 0 /* print unconditionally, announcements */
+#define CL_DLEVEL1 1 /* debug level 1, informative */
+#define CL_DLEVEL2 2 /* debug level 2, verbose */
+#define CL_DLEVEL3 3 /* debug level 3, very verbose */
+
+#define con_log(level, fmt) if (LSI_DBGLVL >= level) printk fmt;
+
+/*
+ * Definitions & Declarations needed to use common management module
+ */
+
+#define MEGAIOC_MAGIC 'm'
+#define MEGAIOCCMD _IOWR(MEGAIOC_MAGIC, 0, mimd_t)
+
+#define MEGAIOC_QNADAP 'm' /* Query # of adapters */
+#define MEGAIOC_QDRVRVER 'e' /* Query driver version */
+#define MEGAIOC_QADAPINFO 'g' /* Query adapter information */
+
+#define USCSICMD 0x80
+#define UIOC_RD 0x00001
+#define UIOC_WR 0x00002
+
+#define MBOX_CMD 0x00000
+#define GET_DRIVER_VER 0x10000
+#define GET_N_ADAP 0x20000
+#define GET_ADAP_INFO 0x30000
+#define GET_CAP 0x40000
+#define GET_STATS 0x50000
+#define GET_IOCTL_VERSION 0x01
+
+#define EXT_IOCTL_SIGN_SZ 16
+#define EXT_IOCTL_SIGN "$$_EXTD_IOCTL_$$"
+
+#define MBOX_LEGACY 0x00 /* ioctl has legacy mbox*/
+#define MBOX_HPE 0x01 /* ioctl has hpe mbox */
+
+#define APPTYPE_MIMD 0x00 /* old existing apps */
+#define APPTYPE_UIOC 0x01 /* new apps using uioc */
+
+#define IOCTL_ISSUE 0x00000001 /* Issue ioctl */
+#define IOCTL_ABORT 0x00000002 /* Abort previous ioctl */
+
+#define DRVRTYPE_MBOX 0x00000001 /* regular mbox driver */
+#define DRVRTYPE_HPE 0x00000002 /* new hpe driver */
+
+#define MKADAP(adapno) (MEGAIOC_MAGIC << 8 | (adapno) )
+#define GETADAP(mkadap) ((mkadap) ^ MEGAIOC_MAGIC << 8)
+
+#define MAX_DMA_POOLS 5 /* 4k, 8k, 16k, 32k, 64k*/
+
+
+/**
+ * struct uioc_t - the common ioctl packet structure
+ *
+ * @signature : Must be "$$_EXTD_IOCTL_$$"
+ * @mb_type : Type of the mail box (MB_LEGACY or MB_HPE)
+ * @app_type : Type of the issuing application (existing or new)
+ * @opcode : Opcode of the command
+ * @adapno : Adapter number
+ * @cmdbuf : Pointer to buffer - can point to mbox or plain data buffer
+ * @xferlen : xferlen for DCMD and non mailbox commands
+ * @data_dir : Direction of the data transfer
+ * @status : Status from the driver
+ * @reserved : reserved bytes for future expansion
+ *
+ * @user_data : user data transfer address is saved in this
+ * @user_data_len: length of the data buffer sent by user app
+ * @user_pthru : user passthru address is saves in this (null if DCMD)
+ * @pthru32 : kernel address passthru (allocated per kioc)
+ * @pthru32_h : physicall address of @pthru32
+ * @list : for kioc free pool list maintenance
+ * @done : call back routine for llds to call when kioc is completed
+ * @buf_vaddr : dma pool buffer attached to kioc for data transfer
+ * @buf_paddr : physical address of the dma pool buffer
+ * @pool_index : index of the dma pool that @buf_vaddr is taken from
+ * @free_buf : indicates if buffer needs to be freed after kioc completes
+ *
+ * Note : All LSI drivers understand only this packet. Any other
+ * : format sent by applications would be converted to this.
+ */
+typedef struct uioc {
+
+/* User Apps: */
+
+ uint8_t signature[EXT_IOCTL_SIGN_SZ];
+ uint16_t mb_type;
+ uint16_t app_type;
+ uint32_t opcode;
+ uint32_t adapno;
+ uint64_t cmdbuf;
+ uint32_t xferlen;
+ uint32_t data_dir;
+ int32_t status;
+ uint8_t reserved[128];
+
+/* Driver Data: */
+ void __user * user_data;
+ uint32_t user_data_len;
+ mraid_passthru_t __user *user_pthru;
+
+ mraid_passthru_t *pthru32;
+ dma_addr_t pthru32_h;
+
+ struct list_head list;
+ void (*done)(struct uioc*);
+
+ caddr_t buf_vaddr;
+ dma_addr_t buf_paddr;
+ int8_t pool_index;
+ uint8_t free_buf;
+
+ uint8_t timedout;
+
+} __attribute__ ((aligned(1024),packed)) uioc_t;
+
+
+/**
+ * struct mraid_hba_info - information about the controller
+ *
+ * @param pci_vendor_id : PCI vendor id
+ * @param pci_device_id : PCI device id
+ * @param subsystem_vendor_id : PCI subsystem vendor id
+ * @param subsystem_device_id : PCI subsystem device id
+ * @param baseport : base port of hba memory
+ * @param pci_bus : PCI bus
+ * @param pci_dev_fn : PCI device/function values
+ * @param irq : interrupt vector for the device
+ *
+ * Extended information of 256 bytes about the controller. Align on the single
+ * byte boundary so that 32-bit applications can be run on 64-bit platform
+ * drivers withoug re-compilation.
+ * NOTE: reduce the number of reserved bytes whenever new field are added, so
+ * that total size of the structure remains 256 bytes.
+ */
+typedef struct mraid_hba_info {
+
+ uint16_t pci_vendor_id;
+ uint16_t pci_device_id;
+ uint16_t subsys_vendor_id;
+ uint16_t subsys_device_id;
+
+ uint64_t baseport;
+ uint8_t pci_bus;
+ uint8_t pci_dev_fn;
+ uint8_t pci_slot;
+ uint8_t irq;
+
+ uint32_t unique_id;
+ uint32_t host_no;
+
+ uint8_t num_ldrv;
+} __attribute__ ((aligned(256), packed)) mraid_hba_info_t;
+
+
+/**
+ * mcontroller : adapter info structure for old mimd_t apps
+ *
+ * @base : base address
+ * @irq : irq number
+ * @numldrv : number of logical drives
+ * @pcibus : pci bus
+ * @pcidev : pci device
+ * @pcifun : pci function
+ * @pciid : pci id
+ * @pcivendor : vendor id
+ * @pcislot : slot number
+ * @uid : unique id
+ */
+typedef struct mcontroller {
+
+ uint64_t base;
+ uint8_t irq;
+ uint8_t numldrv;
+ uint8_t pcibus;
+ uint16_t pcidev;
+ uint8_t pcifun;
+ uint16_t pciid;
+ uint16_t pcivendor;
+ uint8_t pcislot;
+ uint32_t uid;
+
+} __attribute__ ((packed)) mcontroller_t;
+
+
+/**
+ * mm_dmapool_t : Represents one dma pool with just one buffer
+ *
+ * @vaddr : Virtual address
+ * @paddr : DMA physicall address
+ * @bufsize : In KB - 4 = 4k, 8 = 8k etc.
+ * @handle : Handle to the dma pool
+ * @lock : lock to synchronize access to the pool
+ * @in_use : If pool already in use, attach new block
+ */
+typedef struct mm_dmapool {
+ caddr_t vaddr;
+ dma_addr_t paddr;
+ uint32_t buf_size;
+ struct dma_pool *handle;
+ spinlock_t lock;
+ uint8_t in_use;
+} mm_dmapool_t;
+
+
+/**
+ * mraid_mmadp_t: Structure that drivers pass during (un)registration
+ *
+ * @unique_id : Any unique id (usually PCI bus+dev+fn)
+ * @drvr_type : megaraid or hpe (DRVRTYPE_MBOX or DRVRTYPE_HPE)
+ * @drv_data : Driver specific; not touched by the common module
+ * @timeout : timeout for issued kiocs
+ * @max_kioc : Maximum ioctl packets acceptable by the lld
+ * @pdev : pci dev; used for allocating dma'ble memory
+ * @issue_uioc : Driver supplied routine to issue uioc_t commands
+ * : issue_uioc(drvr_data, kioc, ISSUE/ABORT, uioc_done)
+ * @quiescent : flag to indicate if ioctl can be issued to this adp
+ * @list : attach with the global list of adapters
+ * @kioc_list : block of mem for @max_kioc number of kiocs
+ * @kioc_pool : pool of free kiocs
+ * @kioc_pool_lock : protection for free pool
+ * @kioc_semaphore : so as not to exceed @max_kioc parallel ioctls
+ * @mbox_list : block of mem for @max_kioc number of mboxes
+ * @pthru_dma_pool : DMA pool to allocate passthru packets
+ * @dma_pool_list : array of dma pools
+ */
+
+typedef struct mraid_mmadp {
+
+/* Filled by driver */
+
+ uint32_t unique_id;
+ uint32_t drvr_type;
+ unsigned long drvr_data;
+ uint16_t timeout;
+ uint8_t max_kioc;
+
+ struct pci_dev *pdev;
+
+ int(*issue_uioc)(unsigned long, uioc_t *, uint32_t);
+
+/* Maintained by common module */
+ uint32_t quiescent;
+
+ struct list_head list;
+ uioc_t *kioc_list;
+ struct list_head kioc_pool;
+ spinlock_t kioc_pool_lock;
+ struct semaphore kioc_semaphore;
+
+ mbox64_t *mbox_list;
+ struct dma_pool *pthru_dma_pool;
+ mm_dmapool_t dma_pool_list[MAX_DMA_POOLS];
+
+} mraid_mmadp_t;
+
+int mraid_mm_register_adp(mraid_mmadp_t *);
+int mraid_mm_unregister_adp(uint32_t);
+uint32_t mraid_mm_adapter_app_handle(uint32_t);
+
+#endif /* _MEGARAID_IOCTL_H_ */

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