diff options
| -rw-r--r-- | arch/mips/kernel/cpu-probe.c | 25 | ||||
| -rw-r--r-- | arch/mips/mm/c-r3k.c | 2 | ||||
| -rw-r--r-- | arch/mips/mm/c-r4k.c | 2 | ||||
| -rw-r--r-- | arch/mips/mm/c-sb1.c | 2 | ||||
| -rw-r--r-- | arch/mips/mm/c-tx39.c | 2 | ||||
| -rw-r--r-- | arch/mips/mm/cache.c | 90 | ||||
| -rw-r--r-- | include/asm-mips/cpu-features.h | 15 | ||||
| -rw-r--r-- | include/asm-mips/cpu.h | 40 | ||||
| -rw-r--r-- | include/asm-mips/mach-ip22/cpu-feature-overrides.h | 2 | ||||
| -rw-r--r-- | include/asm-mips/mach-mips/cpu-feature-overrides.h | 4 | ||||
| -rw-r--r-- | include/asm-mips/mach-rm200/cpu-feature-overrides.h | 2 | ||||
| -rw-r--r-- | include/asm-mips/mach-sim/cpu-feature-overrides.h | 4 |
12 files changed, 102 insertions, 88 deletions
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 @@ static inline int __cpu_has_fpu(void) 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 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c) 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 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c) 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 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c) #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 @@ static inline unsigned int decode_config0(struct cpuinfo_mips *c) 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 unsigned int decode_config3(struct cpuinfo_mips *c) 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_alchemy(struct cpuinfo_mips *c) 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 @@ static void r3k_dma_cache_wback_inv(unsigned long start, unsigned long size) 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 @@ static inline void coherency_setup(void) } } -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 @@ static __init void probe_cache_sizes(void) * 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 @@ static __init void tx39_probe_cache(void) } } -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 @@ 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_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 - - 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); } 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 |