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Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus 

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  MIPS: R2: Fix problem with code that incorrectly modifies ebase.
  MIPS: Change {set,clear,change}_c0_<foo> to return old value.
  MIPS: compat: Remove duplicated #include
  MIPS: VR5500: Enable prefetch
  MIPS: Fix oops in dma_unmap_page on not coherent mips platforms
This commit is contained in:
Linus Torvalds 2009-03-26 11:02:50 -07:00
parent 1b5e62b42b 9fb4c2b9e0
commit 1646df40bb
5 changed files with 20 additions and 19 deletions
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22
arch/mips/include/asm/mipsregs.h
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@ -1391,11 +1391,11 @@ static inline void tlb_write_random(void)
static inline unsigned int \ static inline unsigned int \
set_c0_##name(unsigned int set) \ set_c0_##name(unsigned int set) \
{ \ { \
unsigned int res; \ unsigned int res, new; \
\ \
res = read_c0_##name(); \ res = read_c0_##name(); \
res |= set; \ new = res | set; \
write_c0_##name(res); \ write_c0_##name(new); \
\ \
return res; \ return res; \
} \ } \
@ -1403,24 +1403,24 @@ set_c0_##name(unsigned int set) \
static inline unsigned int \ static inline unsigned int \
clear_c0_##name(unsigned int clear) \ clear_c0_##name(unsigned int clear) \
{ \ { \
unsigned int res; \ unsigned int res, new; \
\ \
res = read_c0_##name(); \ res = read_c0_##name(); \
res &= ~clear; \ new = res & ~clear; \
write_c0_##name(res); \ write_c0_##name(new); \
\ \
return res; \ return res; \
} \ } \
\ \
static inline unsigned int \ static inline unsigned int \
change_c0_##name(unsigned int change, unsigned int new) \ change_c0_##name(unsigned int change, unsigned int val) \
{ \ { \
unsigned int res; \ unsigned int res, new; \
\ \
res = read_c0_##name(); \ res = read_c0_##name(); \
res &= ~change; \ new = res & ~change; \
res |= (new & change); \ new |= (val & change); \
write_c0_##name(res); \ write_c0_##name(new); \
\ \
return res; \ return res; \
} }

1
arch/mips/kernel/linux32.c
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@ -32,7 +32,6 @@
#include <linux/module.h> #include <linux/module.h>
#include <linux/binfmts.h> #include <linux/binfmts.h>
#include <linux/security.h> #include <linux/security.h>
#include <linux/syscalls.h>
#include <linux/compat.h> #include <linux/compat.h>
#include <linux/vfs.h> #include <linux/vfs.h>
#include <linux/ipc.h> #include <linux/ipc.h>

12
arch/mips/kernel/traps.c
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@ -1520,7 +1520,9 @@ void __cpuinit per_cpu_trap_init(void)
#endif /* CONFIG_MIPS_MT_SMTC */ #endif /* CONFIG_MIPS_MT_SMTC */
if (cpu_has_veic || cpu_has_vint) { if (cpu_has_veic || cpu_has_vint) {
unsigned long sr = set_c0_status(ST0_BEV);
write_c0_ebase(ebase); write_c0_ebase(ebase);
write_c0_status(sr);
/* Setting vector spacing enables EI/VI mode */ /* Setting vector spacing enables EI/VI mode */
change_c0_intctl(0x3e0, VECTORSPACING); change_c0_intctl(0x3e0, VECTORSPACING);
} }
@ -1602,8 +1604,6 @@ void __cpuinit set_uncached_handler(unsigned long offset, void *addr,
#ifdef CONFIG_64BIT #ifdef CONFIG_64BIT
unsigned long uncached_ebase = TO_UNCAC(ebase); unsigned long uncached_ebase = TO_UNCAC(ebase);
#endif #endif
if (cpu_has_mips_r2)
uncached_ebase += (read_c0_ebase() & 0x3ffff000);
if (!addr) if (!addr)
panic(panic_null_cerr); panic(panic_null_cerr);
@ -1635,9 +1635,11 @@ void __init trap_init(void)
return; /* Already done */ return; /* Already done */
#endif #endif
if (cpu_has_veic || cpu_has_vint) if (cpu_has_veic || cpu_has_vint) {
ebase = (unsigned long) alloc_bootmem_low_pages(0x200 + VECTORSPACING*64); unsigned long size = 0x200 + VECTORSPACING*64;
else { ebase = (unsigned long)
__alloc_bootmem(size, 1 << fls(size), 0);
} else {
ebase = CAC_BASE; ebase = CAC_BASE;
if (cpu_has_mips_r2) if (cpu_has_mips_r2)
ebase += (read_c0_ebase() & 0x3ffff000); ebase += (read_c0_ebase() & 0x3ffff000);

2
arch/mips/mm/c-r4k.c
View File

@ -780,7 +780,7 @@ static void __cpuinit probe_pcache(void)
c->dcache.ways = 2; c->dcache.ways = 2;
c->dcache.waybit = 0; c->dcache.waybit = 0;
c->options |= MIPS_CPU_CACHE_CDEX_P; c->options |= MIPS_CPU_CACHE_CDEX_P | MIPS_CPU_PREFETCH;
break; break;
case CPU_TX49XX: case CPU_TX49XX:

2
arch/mips/mm/dma-default.c
View File

@ -225,7 +225,7 @@ void dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
if (!plat_device_is_coherent(dev) && direction != DMA_TO_DEVICE) { if (!plat_device_is_coherent(dev) && direction != DMA_TO_DEVICE) {
unsigned long addr; unsigned long addr;
addr = plat_dma_addr_to_phys(dma_address); addr = dma_addr_to_virt(dma_address);
dma_cache_wback_inv(addr, size); dma_cache_wback_inv(addr, size);
} }