Fedora kernel-2.6.17-1.2142_FC4 patched with stable patch-2.6.17.4-vs2.0.2-rc26.diff

[linux-2.6.git] / arch / mips / mm / cache.c

diff --git a/arch/mips/mm/cache.c b/arch/mips/mm/cache.c
index 1d95cdb..83a5629 100644 (file)
--- a/arch/mips/mm/cache.c
+++ b/arch/mips/mm/cache.c
@@ -23,15 +23,19 @@ 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_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_icache_page)(struct vm_area_struct *vma, struct page *page);
 
 /* MIPS specific cache operations */
 void (*flush_cache_sigtramp)(unsigned long addr);
+void (*local_flush_data_cache_page)(void * 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 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);
 }