Cleanup the mess in cpu_cache_init.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index 5d71eca..8e6427a 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -191,7 +191,7 @@
return ((cpu_get_fpu_id() & 0xff00) != FPIR_IMP_NONE);
}
-#define R4K_OPTS (MIPS_CPU_TLB | MIPS_CPU_4KEX | MIPS_CPU_4KTLB \
+#define R4K_OPTS (MIPS_CPU_TLB | MIPS_CPU_4KEX | MIPS_CPU_4K_CACHE \
| MIPS_CPU_COUNTER)
static inline void cpu_probe_legacy(struct cpuinfo_mips *c)
@@ -200,7 +200,8 @@
case PRID_IMP_R2000:
c->cputype = CPU_R2000;
c->isa_level = MIPS_CPU_ISA_I;
- c->options = MIPS_CPU_TLB | MIPS_CPU_NOFPUEX;
+ c->options = MIPS_CPU_TLB | MIPS_CPU_3K_CACHE |
+ MIPS_CPU_NOFPUEX;
if (__cpu_has_fpu())
c->options |= MIPS_CPU_FPU;
c->tlbsize = 64;
@@ -214,7 +215,8 @@
else
c->cputype = CPU_R3000;
c->isa_level = MIPS_CPU_ISA_I;
- c->options = MIPS_CPU_TLB | MIPS_CPU_NOFPUEX;
+ c->options = MIPS_CPU_TLB | MIPS_CPU_3K_CACHE |
+ MIPS_CPU_NOFPUEX;
if (__cpu_has_fpu())
c->options |= MIPS_CPU_FPU;
c->tlbsize = 64;
@@ -297,7 +299,7 @@
#endif
case PRID_IMP_TX39:
c->isa_level = MIPS_CPU_ISA_I;
- c->options = MIPS_CPU_TLB;
+ c->options = MIPS_CPU_TLB | MIPS_CPU_TX39_CACHE;
if ((c->processor_id & 0xf0) == (PRID_REV_TX3927 & 0xf0)) {
c->cputype = CPU_TX3927;
@@ -441,7 +443,7 @@
config0 = read_c0_config();
if (((config0 & MIPS_CONF_MT) >> 7) == 1)
- c->options |= MIPS_CPU_TLB | MIPS_CPU_4KTLB;
+ c->options |= MIPS_CPU_TLB;
isa = (config0 & MIPS_CONF_AT) >> 13;
switch (isa) {
case 0:
@@ -516,8 +518,8 @@
static inline void decode_configs(struct cpuinfo_mips *c)
{
/* MIPS32 or MIPS64 compliant CPU. */
- c->options = MIPS_CPU_4KEX | MIPS_CPU_COUNTER | MIPS_CPU_DIVEC |
- MIPS_CPU_LLSC | MIPS_CPU_MCHECK;
+ c->options = MIPS_CPU_4KEX | MIPS_CPU_4K_CACHE | MIPS_CPU_COUNTER |
+ MIPS_CPU_DIVEC | MIPS_CPU_LLSC | MIPS_CPU_MCHECK;
c->scache.flags = MIPS_CACHE_NOT_PRESENT;
@@ -603,6 +605,15 @@
static inline void cpu_probe_sibyte(struct cpuinfo_mips *c)
{
decode_configs(c);
+
+ /*
+ * For historical reasons the SB1 comes with it's own variant of
+ * cache code which eventually will be folded into c-r4k.c. Until
+ * then we pretend it's got it's own cache architecture.
+ */
+ c->options &= MIPS_CPU_4K_CACHE;
+ c->options |= MIPS_CPU_SB1_CACHE;
+
switch (c->processor_id & 0xff00) {
case PRID_IMP_SB1:
c->cputype = CPU_SB1;
diff --git a/arch/mips/mm/c-r3k.c b/arch/mips/mm/c-r3k.c
index 03492a5..27f4fa2 100644
--- a/arch/mips/mm/c-r3k.c
+++ b/arch/mips/mm/c-r3k.c
@@ -319,7 +319,7 @@
r3k_flush_dcache_range(start, start + size);
}
-void __init ld_mmu_r23000(void)
+void __init r3k_cache_init(void)
{
extern void build_clear_page(void);
extern void build_copy_page(void);
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index aa87ae5..31f080b 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -1221,7 +1221,7 @@
}
}
-void __init ld_mmu_r4xx0(void)
+void __init r4k_cache_init(void)
{
extern void build_clear_page(void);
extern void build_copy_page(void);
diff --git a/arch/mips/mm/c-sb1.c b/arch/mips/mm/c-sb1.c
index d183dbc..70d1ab3 100644
--- a/arch/mips/mm/c-sb1.c
+++ b/arch/mips/mm/c-sb1.c
@@ -496,7 +496,7 @@
* memory management function pointers, as well as initialize
* the caches and tlbs
*/
-void ld_mmu_sb1(void)
+void sb1_cache_init(void)
{
extern char except_vec2_sb1;
extern char handle_vec2_sb1;
diff --git a/arch/mips/mm/c-tx39.c b/arch/mips/mm/c-tx39.c
index c3ba81d..0a97a94 100644
--- a/arch/mips/mm/c-tx39.c
+++ b/arch/mips/mm/c-tx39.c
@@ -410,7 +410,7 @@
}
}
-void __init ld_mmu_tx39(void)
+void __init tx39_cache_init(void)
{
extern void build_clear_page(void);
extern void build_copy_page(void);
diff --git a/arch/mips/mm/cache.c b/arch/mips/mm/cache.c
index 172293b..611b48d 100644
--- a/arch/mips/mm/cache.c
+++ b/arch/mips/mm/cache.c
@@ -104,58 +104,48 @@
}
}
-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_R1) || \
- defined(CONFIG_CPU_MIPS64_R1) || 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
+ if (cpu_has_3k_cache) {
+ extern void __weak r3k_cache_init(void);
- case CPU_R8000:
- panic("R8000 is unsupported");
- break;
-
- default:
- panic("Yeee, unsupported cache architecture.");
+ 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);
}
diff --git a/include/asm-mips/cpu-features.h b/include/asm-mips/cpu-features.h
index 698c211..03627cfb 100644
--- a/include/asm-mips/cpu-features.h
+++ b/include/asm-mips/cpu-features.h
@@ -25,8 +25,19 @@
#ifndef cpu_has_4kex
#define cpu_has_4kex (cpu_data[0].options & MIPS_CPU_4KEX)
#endif
-#ifndef cpu_has_4ktlb
-#define cpu_has_4ktlb (cpu_data[0].options & MIPS_CPU_4KTLB)
+#ifndef cpu_has_3k_cache
+#define cpu_has_3k_cache (cpu_data[0].options & MIPS_CPU_3K_CACHE)
+#endif
+#define cpu_has_6k_cache 0
+#define cpu_has_8k_cache 0
+#ifndef cpu_has_4k_cache
+#define cpu_has_4k_cache (cpu_data[0].options & MIPS_CPU_4K_CACHE)
+#endif
+#ifndef cpu_has_tx39_cache
+#define cpu_has_tx39_cache (cpu_data[0].options & MIPS_CPU_TX39_CACHE)
+#endif
+#ifndef cpu_has_sb1_cache
+#define cpu_has_sb1_cache (cpu_data[0].options & MIPS_CPU_SB1_CACHE)
#endif
#ifndef cpu_has_fpu
#define cpu_has_fpu (cpu_data[0].options & MIPS_CPU_FPU)
diff --git a/include/asm-mips/cpu.h b/include/asm-mips/cpu.h
index 2e8b5a4..46b2a8d 100644
--- a/include/asm-mips/cpu.h
+++ b/include/asm-mips/cpu.h
@@ -217,25 +217,27 @@
* CPU Option encodings
*/
#define MIPS_CPU_TLB 0x00000001 /* CPU has TLB */
-/* Leave a spare bit for variant MMU types... */
-#define MIPS_CPU_4KEX 0x00000004 /* "R4K" exception model */
-#define MIPS_CPU_4KTLB 0x00000008 /* "R4K" TLB handler */
-#define MIPS_CPU_FPU 0x00000010 /* CPU has FPU */
-#define MIPS_CPU_32FPR 0x00000020 /* 32 dbl. prec. FP registers */
-#define MIPS_CPU_COUNTER 0x00000040 /* Cycle count/compare */
-#define MIPS_CPU_WATCH 0x00000080 /* watchpoint registers */
-#define MIPS_CPU_DIVEC 0x00000200 /* dedicated interrupt vector */
-#define MIPS_CPU_VCE 0x00000400 /* virt. coherence conflict possible */
-#define MIPS_CPU_CACHE_CDEX_P 0x00000800 /* Create_Dirty_Exclusive CACHE op */
-#define MIPS_CPU_CACHE_CDEX_S 0x00001000 /* ... same for seconary cache ... */
-#define MIPS_CPU_MCHECK 0x00002000 /* Machine check exception */
-#define MIPS_CPU_EJTAG 0x00004000 /* EJTAG exception */
-#define MIPS_CPU_NOFPUEX 0x00008000 /* no FPU exception */
-#define MIPS_CPU_LLSC 0x00010000 /* CPU has ll/sc instructions */
-#define MIPS_CPU_SUBSET_CACHES 0x00020000 /* P-cache subset enforced */
-#define MIPS_CPU_PREFETCH 0x00040000 /* CPU has usable prefetch */
-#define MIPS_CPU_VINT 0x00080000 /* CPU supports MIPSR2 vectored interrupts */
-#define MIPS_CPU_VEIC 0x00100000 /* CPU supports MIPSR2 external interrupt controller mode */
+#define MIPS_CPU_4KEX 0x00000002 /* "R4K" exception model */
+#define MIPS_CPU_3K_CACHE 0x00000004 /* R3000-style caches */
+#define MIPS_CPU_4K_CACHE 0x00000008 /* R4000-style caches */
+#define MIPS_CPU_TX39_CACHE 0x00000010 /* TX3900-style caches */
+#define MIPS_CPU_SB1_CACHE 0x00000020 /* SB1-style caches */
+#define MIPS_CPU_FPU 0x00000040 /* CPU has FPU */
+#define MIPS_CPU_32FPR 0x00000080 /* 32 dbl. prec. FP registers */
+#define MIPS_CPU_COUNTER 0x00000100 /* Cycle count/compare */
+#define MIPS_CPU_WATCH 0x00000200 /* watchpoint registers */
+#define MIPS_CPU_DIVEC 0x00000400 /* dedicated interrupt vector */
+#define MIPS_CPU_VCE 0x00000800 /* virt. coherence conflict possible */
+#define MIPS_CPU_CACHE_CDEX_P 0x00001000 /* Create_Dirty_Exclusive CACHE op */
+#define MIPS_CPU_CACHE_CDEX_S 0x00002000 /* ... same for seconary cache ... */
+#define MIPS_CPU_MCHECK 0x00004000 /* Machine check exception */
+#define MIPS_CPU_EJTAG 0x00008000 /* EJTAG exception */
+#define MIPS_CPU_NOFPUEX 0x00010000 /* no FPU exception */
+#define MIPS_CPU_LLSC 0x00020000 /* CPU has ll/sc instructions */
+#define MIPS_CPU_SUBSET_CACHES 0x00040000 /* P-cache subset enforced */
+#define MIPS_CPU_PREFETCH 0x00080000 /* CPU has usable prefetch */
+#define MIPS_CPU_VINT 0x00100000 /* CPU supports MIPSR2 vectored interrupts */
+#define MIPS_CPU_VEIC 0x00200000 /* CPU supports MIPSR2 external interrupt controller mode */
/*
* CPU ASE encodings
diff --git a/include/asm-mips/mach-ip22/cpu-feature-overrides.h b/include/asm-mips/mach-ip22/cpu-feature-overrides.h
index ac71b4d..ab97146 100644
--- a/include/asm-mips/mach-ip22/cpu-feature-overrides.h
+++ b/include/asm-mips/mach-ip22/cpu-feature-overrides.h
@@ -13,7 +13,7 @@
*/
#define cpu_has_tlb 1
#define cpu_has_4kex 1
-#define cpu_has_4ktlb 1
+#define cpu_has_4kcache 1
#define cpu_has_fpu 1
#define cpu_has_32fpr 1
#define cpu_has_counter 1
diff --git a/include/asm-mips/mach-mips/cpu-feature-overrides.h b/include/asm-mips/mach-mips/cpu-feature-overrides.h
index 98927f8..5c5edbf 100644
--- a/include/asm-mips/mach-mips/cpu-feature-overrides.h
+++ b/include/asm-mips/mach-mips/cpu-feature-overrides.h
@@ -17,7 +17,7 @@
#ifdef CONFIG_CPU_MIPS32_R1
#define cpu_has_tlb 1
#define cpu_has_4kex 1
-#define cpu_has_4ktlb 1
+#define cpu_has_4kcache 1
/* #define cpu_has_fpu ? */
/* #define cpu_has_32fpr ? */
#define cpu_has_counter 1
@@ -43,7 +43,7 @@
#ifdef CONFIG_CPU_MIPS64_R1
#define cpu_has_tlb 1
#define cpu_has_4kex 1
-#define cpu_has_4ktlb 1
+#define cpu_has_4kcache 1
/* #define cpu_has_fpu ? */
/* #define cpu_has_32fpr ? */
#define cpu_has_counter 1
diff --git a/include/asm-mips/mach-rm200/cpu-feature-overrides.h b/include/asm-mips/mach-rm200/cpu-feature-overrides.h
index 9b2a405..79f9b06 100644
--- a/include/asm-mips/mach-rm200/cpu-feature-overrides.h
+++ b/include/asm-mips/mach-rm200/cpu-feature-overrides.h
@@ -14,7 +14,7 @@
#define cpu_has_tlb 1
#define cpu_has_4kex 1
-#define cpu_has_4ktlb 1
+#define cpu_has_4kcache 1
#define cpu_has_fpu 1
#define cpu_has_32fpr 1
#define cpu_has_counter 1
diff --git a/include/asm-mips/mach-sim/cpu-feature-overrides.h b/include/asm-mips/mach-sim/cpu-feature-overrides.h
index 0945721..cadbe8e 100644
--- a/include/asm-mips/mach-sim/cpu-feature-overrides.h
+++ b/include/asm-mips/mach-sim/cpu-feature-overrides.h
@@ -16,7 +16,7 @@
#ifdef CONFIG_CPU_MIPS32
#define cpu_has_tlb 1
#define cpu_has_4kex 1
-#define cpu_has_4ktlb 1
+#define cpu_has_4kcache 1
#define cpu_has_fpu 0
/* #define cpu_has_32fpr ? */
#define cpu_has_counter 1
@@ -41,7 +41,7 @@
#ifdef CONFIG_CPU_MIPS64
#define cpu_has_tlb 1
#define cpu_has_4kex 1
-#define cpu_has_4ktlb 1
+#define cpu_has_4kcache 1
/* #define cpu_has_fpu ? */
/* #define cpu_has_32fpr ? */
#define cpu_has_counter 1