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authorLinus Torvalds <torvalds@linux-foundation.org>2018-10-26 21:36:21 (GMT)
committerLinus Torvalds <torvalds@linux-foundation.org>2018-10-26 21:36:21 (GMT)
commit685f7e4f161425b137056abe35ba8ef7b669d83d (patch)
tree550dd1f5dc9e852cfeec26bf5e3ce9dd060c8a33 /drivers/video
parentc7a2c49ea6c9eebbe44ff2c08b663b2905ee2c13 (diff)
parent58cfbac25b1fd2b76f94566aed28a3662b0ff8c6 (diff)
Merge tag 'powerpc-4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman: "Notable changes: - A large series to rewrite our SLB miss handling, replacing a lot of fairly complicated asm with much fewer lines of C. - Following on from that, we now maintain a cache of SLB entries for each process and preload them on context switch. Leading to a 27% speedup for our context switch benchmark on Power9. - Improvements to our handling of SLB multi-hit errors. We now print more debug information when they occur, and try to continue running by flushing the SLB and reloading, rather than treating them as fatal. - Enable THP migration on 64-bit Book3S machines (eg. Power7/8/9). - Add support for physical memory up to 2PB in the linear mapping on 64-bit Book3S. We only support up to 512TB as regular system memory, otherwise the percpu allocator runs out of vmalloc space. - Add stack protector support for 32 and 64-bit, with a per-task canary. - Add support for PTRACE_SYSEMU and PTRACE_SYSEMU_SINGLESTEP. - Support recognising "big cores" on Power9, where two SMT4 cores are presented to us as a single SMT8 core. - A large series to cleanup some of our ioremap handling and PTE flags. - Add a driver for the PAPR SCM (storage class memory) interface, allowing guests to operate on SCM devices (acked by Dan). - Changes to our ftrace code to handle very large kernels, where we need to use a trampoline to get to ftrace_caller(). And many other smaller enhancements and cleanups. Thanks to: Alan Modra, Alistair Popple, Aneesh Kumar K.V, Anton Blanchard, Aravinda Prasad, Bartlomiej Zolnierkiewicz, Benjamin Herrenschmidt, Breno Leitao, C├ędric Le Goater, Christophe Leroy, Christophe Lombard, Dan Carpenter, Daniel Axtens, Finn Thain, Gautham R. Shenoy, Gustavo Romero, Haren Myneni, Hari Bathini, Jia Hongtao, Joel Stanley, John Allen, Laurent Dufour, Madhavan Srinivasan, Mahesh Salgaonkar, Mark Hairgrove, Masahiro Yamada, Michael Bringmann, Michael Neuling, Michal Suchanek, Murilo Opsfelder Araujo, Nathan Fontenot, Naveen N. Rao, Nicholas Piggin, Nick Desaulniers, Oliver O'Halloran, Paul Mackerras, Petr Vorel, Rashmica Gupta, Reza Arbab, Rob Herring, Sam Bobroff, Samuel Mendoza-Jonas, Scott Wood, Stan Johnson, Stephen Rothwell, Stewart Smith, Suraj Jitindar Singh, Tyrel Datwyler, Vaibhav Jain, Vasant Hegde, YueHaibing, zhong jiang" * tag 'powerpc-4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (221 commits) Revert "selftests/powerpc: Fix out-of-tree build errors" powerpc/msi: Fix compile error on mpc83xx powerpc: Fix stack protector crashes on CPU hotplug powerpc/traps: restore recoverability of machine_check interrupts powerpc/64/module: REL32 relocation range check powerpc/64s/radix: Fix radix__flush_tlb_collapsed_pmd double flushing pmd selftests/powerpc: Add a test of wild bctr powerpc/mm: Fix page table dump to work on Radix powerpc/mm/radix: Display if mappings are exec or not powerpc/mm/radix: Simplify split mapping logic powerpc/mm/radix: Remove the retry in the split mapping logic powerpc/mm/radix: Fix small page at boundary when splitting powerpc/mm/radix: Fix overuse of small pages in splitting logic powerpc/mm/radix: Fix off-by-one in split mapping logic powerpc/ftrace: Handle large kernel configs powerpc/mm: Fix WARN_ON with THP NUMA migration selftests/powerpc: Fix out-of-tree build errors powerpc/time: no steal_time when CONFIG_PPC_SPLPAR is not selected powerpc/time: Only set CONFIG_ARCH_HAS_SCALED_CPUTIME on PPC64 powerpc/time: isolate scaled cputime accounting in dedicated functions. ...
Diffstat (limited to 'drivers/video')
-rw-r--r--drivers/video/fbdev/chipsfb.c3
-rw-r--r--drivers/video/fbdev/controlfb.c5
-rw-r--r--drivers/video/fbdev/platinumfb.c5
-rw-r--r--drivers/video/fbdev/valkyriefb.c12
4 files changed, 9 insertions, 16 deletions
diff --git a/drivers/video/fbdev/chipsfb.c b/drivers/video/fbdev/chipsfb.c
index f103665..40182ed 100644
--- a/drivers/video/fbdev/chipsfb.c
+++ b/drivers/video/fbdev/chipsfb.c
@@ -27,7 +27,6 @@
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/console.h>
-#include <asm/io.h>
#ifdef CONFIG_PMAC_BACKLIGHT
#include <asm/backlight.h>
@@ -401,7 +400,7 @@ static int chipsfb_pci_init(struct pci_dev *dp, const struct pci_device_id *ent)
#endif /* CONFIG_PMAC_BACKLIGHT */
#ifdef CONFIG_PPC
- p->screen_base = __ioremap(addr, 0x200000, _PAGE_NO_CACHE);
+ p->screen_base = ioremap_wc(addr, 0x200000);
#else
p->screen_base = ioremap(addr, 0x200000);
#endif
diff --git a/drivers/video/fbdev/controlfb.c b/drivers/video/fbdev/controlfb.c
index 8d14b29..9cb0ef7 100644
--- a/drivers/video/fbdev/controlfb.c
+++ b/drivers/video/fbdev/controlfb.c
@@ -48,9 +48,7 @@
#include <linux/nvram.h>
#include <linux/adb.h>
#include <linux/cuda.h>
-#include <asm/io.h>
#include <asm/prom.h>
-#include <asm/pgtable.h>
#include <asm/btext.h>
#include "macmodes.h"
@@ -715,8 +713,7 @@ static int __init control_of_init(struct device_node *dp)
goto error_out;
}
/* map at most 8MB for the frame buffer */
- p->frame_buffer = __ioremap(p->frame_buffer_phys, 0x800000,
- _PAGE_WRITETHRU);
+ p->frame_buffer = ioremap_wt(p->frame_buffer_phys, 0x800000);
if (!p->control_regs_phys ||
!request_mem_region(p->control_regs_phys, p->control_regs_size,
diff --git a/drivers/video/fbdev/platinumfb.c b/drivers/video/fbdev/platinumfb.c
index 377d339..bf6b7fb 100644
--- a/drivers/video/fbdev/platinumfb.c
+++ b/drivers/video/fbdev/platinumfb.c
@@ -32,9 +32,7 @@
#include <linux/nvram.h>
#include <linux/of_device.h>
#include <linux/of_platform.h>
-#include <asm/io.h>
#include <asm/prom.h>
-#include <asm/pgtable.h>
#include "macmodes.h"
#include "platinumfb.h"
@@ -577,8 +575,7 @@ static int platinumfb_probe(struct platform_device* odev)
/* frame buffer - map only 4MB */
pinfo->frame_buffer_phys = pinfo->rsrc_fb.start;
- pinfo->frame_buffer = __ioremap(pinfo->rsrc_fb.start, 0x400000,
- _PAGE_WRITETHRU);
+ pinfo->frame_buffer = ioremap_wt(pinfo->rsrc_fb.start, 0x400000);
pinfo->base_frame_buffer = pinfo->frame_buffer;
/* registers */
diff --git a/drivers/video/fbdev/valkyriefb.c b/drivers/video/fbdev/valkyriefb.c
index 275fb98..d51c3a8 100644
--- a/drivers/video/fbdev/valkyriefb.c
+++ b/drivers/video/fbdev/valkyriefb.c
@@ -54,13 +54,11 @@
#include <linux/nvram.h>
#include <linux/adb.h>
#include <linux/cuda.h>
-#include <asm/io.h>
#ifdef CONFIG_MAC
#include <asm/macintosh.h>
#else
#include <asm/prom.h>
#endif
-#include <asm/pgtable.h>
#include "macmodes.h"
#include "valkyriefb.h"
@@ -318,7 +316,7 @@ static void __init valkyrie_choose_mode(struct fb_info_valkyrie *p)
int __init valkyriefb_init(void)
{
struct fb_info_valkyrie *p;
- unsigned long frame_buffer_phys, cmap_regs_phys, flags;
+ unsigned long frame_buffer_phys, cmap_regs_phys;
int err;
char *option = NULL;
@@ -337,7 +335,6 @@ int __init valkyriefb_init(void)
/* Hardcoded addresses... welcome to 68k Macintosh country :-) */
frame_buffer_phys = 0xf9000000;
cmap_regs_phys = 0x50f24000;
- flags = IOMAP_NOCACHE_SER; /* IOMAP_WRITETHROUGH?? */
#else /* ppc (!CONFIG_MAC) */
{
struct device_node *dp;
@@ -354,7 +351,6 @@ int __init valkyriefb_init(void)
frame_buffer_phys = r.start;
cmap_regs_phys = r.start + 0x304000;
- flags = _PAGE_WRITETHRU;
}
#endif /* ppc (!CONFIG_MAC) */
@@ -369,7 +365,11 @@ int __init valkyriefb_init(void)
}
p->total_vram = 0x100000;
p->frame_buffer_phys = frame_buffer_phys;
- p->frame_buffer = __ioremap(frame_buffer_phys, p->total_vram, flags);
+#ifdef CONFIG_MAC
+ p->frame_buffer = ioremap_nocache(frame_buffer_phys, p->total_vram);
+#else
+ p->frame_buffer = ioremap_wt(frame_buffer_phys, p->total_vram);
+#endif
p->cmap_regs_phys = cmap_regs_phys;
p->cmap_regs = ioremap(p->cmap_regs_phys, 0x1000);
p->valkyrie_regs_phys = cmap_regs_phys+0x6000;

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