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Diffstat (limited to 'arch/mips/mm/cache.c')
-rw-r--r--arch/mips/mm/cache.c106
1 files changed, 51 insertions, 55 deletions
diff --git a/arch/mips/mm/cache.c b/arch/mips/mm/cache.c
index 1d95cdb77bed..314701a66b13 100644
--- a/arch/mips/mm/cache.c
+++ b/arch/mips/mm/cache.c
@@ -23,8 +23,10 @@ void (*__flush_cache_all)(void);
void (*flush_cache_mm)(struct mm_struct *mm);
void (*flush_cache_range)(struct vm_area_struct *vma, unsigned long start,
unsigned long end);
-void (*flush_cache_page)(struct vm_area_struct *vma, unsigned long page, unsigned long pfn);
-void (*flush_icache_range)(unsigned long start, unsigned long end);
+void (*flush_cache_page)(struct vm_area_struct *vma, unsigned long page,
+ unsigned long pfn);
+void (*flush_icache_range)(unsigned long __user start,
+ unsigned long __user end);
void (*flush_icache_page)(struct vm_area_struct *vma, struct page *page);
/* MIPS specific cache operations */
@@ -32,6 +34,8 @@ void (*flush_cache_sigtramp)(unsigned long addr);
void (*flush_data_cache_page)(unsigned long addr);
void (*flush_icache_all)(void);
+EXPORT_SYMBOL(flush_data_cache_page);
+
#ifdef CONFIG_DMA_NONCOHERENT
/* DMA cache operations. */
@@ -49,10 +53,12 @@ EXPORT_SYMBOL(_dma_cache_inv);
* We could optimize the case where the cache argument is not BCACHE but
* that seems very atypical use ...
*/
-asmlinkage int sys_cacheflush(unsigned long addr, unsigned long int bytes,
- unsigned int cache)
+asmlinkage int sys_cacheflush(unsigned long __user addr,
+ unsigned long bytes, unsigned int cache)
{
- if (!access_ok(VERIFY_WRITE, (void *) addr, bytes))
+ if (bytes == 0)
+ return 0;
+ if (!access_ok(VERIFY_WRITE, (void __user *) addr, bytes))
return -EFAULT;
flush_icache_range(addr, addr + bytes);
@@ -100,58 +106,48 @@ void __update_cache(struct vm_area_struct *vma, unsigned long address,
}
}
-extern void ld_mmu_r23000(void);
-extern void ld_mmu_r4xx0(void);
-extern void ld_mmu_tx39(void);
-extern void ld_mmu_r6000(void);
-extern void ld_mmu_tfp(void);
-extern void ld_mmu_andes(void);
-extern void ld_mmu_sb1(void);
+#define __weak __attribute__((weak))
+
+static char cache_panic[] __initdata = "Yeee, unsupported cache architecture.";
void __init cpu_cache_init(void)
{
- if (cpu_has_4ktlb) {
-#if defined(CONFIG_CPU_R4X00) || defined(CONFIG_CPU_VR41XX) || \
- defined(CONFIG_CPU_R4300) || defined(CONFIG_CPU_R5000) || \
- defined(CONFIG_CPU_NEVADA) || defined(CONFIG_CPU_R5432) || \
- defined(CONFIG_CPU_R5500) || defined(CONFIG_CPU_MIPS32) || \
- defined(CONFIG_CPU_MIPS64) || defined(CONFIG_CPU_TX49XX) || \
- defined(CONFIG_CPU_RM7000) || defined(CONFIG_CPU_RM9000)
- ld_mmu_r4xx0();
-#endif
- } else switch (current_cpu_data.cputype) {
-#ifdef CONFIG_CPU_R3000
- case CPU_R2000:
- case CPU_R3000:
- case CPU_R3000A:
- case CPU_R3081E:
- ld_mmu_r23000();
- break;
-#endif
-#ifdef CONFIG_CPU_TX39XX
- case CPU_TX3912:
- case CPU_TX3922:
- case CPU_TX3927:
- ld_mmu_tx39();
- break;
-#endif
-#ifdef CONFIG_CPU_R10000
- case CPU_R10000:
- case CPU_R12000:
- ld_mmu_r4xx0();
- break;
-#endif
-#ifdef CONFIG_CPU_SB1
- case CPU_SB1:
- ld_mmu_sb1();
- break;
-#endif
-
- case CPU_R8000:
- panic("R8000 is unsupported");
- break;
-
- default:
- panic("Yeee, unsupported cache architecture.");
+ if (cpu_has_3k_cache) {
+ extern void __weak r3k_cache_init(void);
+
+ r3k_cache_init();
+ return;
+ }
+ if (cpu_has_6k_cache) {
+ extern void __weak r6k_cache_init(void);
+
+ r6k_cache_init();
+ return;
+ }
+ if (cpu_has_4k_cache) {
+ extern void __weak r4k_cache_init(void);
+
+ r4k_cache_init();
+ return;
}
+ if (cpu_has_8k_cache) {
+ extern void __weak r8k_cache_init(void);
+
+ r8k_cache_init();
+ return;
+ }
+ if (cpu_has_tx39_cache) {
+ extern void __weak tx39_cache_init(void);
+
+ tx39_cache_init();
+ return;
+ }
+ if (cpu_has_sb1_cache) {
+ extern void __weak sb1_cache_init(void);
+
+ sb1_cache_init();
+ return;
+ }
+
+ panic(cache_panic);
}