From 3679ae9872aef12529b332767e32097aa8233904 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen <lars@metafoo.de> Date: Sat, 24 Apr 2010 17:34:29 +0200 Subject: [PATCH] JZ4740 cache quirks --- arch/mips/include/asm/r4kcache.h | 231 ++++++++++++++++++++++++++++++++++++++ 1 files changed, 231 insertions(+), 0 deletions(-) --- a/arch/mips/include/asm/r4kcache.h +++ b/arch/mips/include/asm/r4kcache.h @@ -17,6 +17,58 @@ #include <asm/cpu-features.h> #include <asm/mipsmtregs.h> +#ifdef CONFIG_JZRISC + +#define K0_TO_K1() \ +do { \ + unsigned long __k0_addr; \ + \ + __asm__ __volatile__( \ + "la %0, 1f\n\t" \ + "or %0, %0, %1\n\t" \ + "jr %0\n\t" \ + "nop\n\t" \ + "1: nop\n" \ + : "=&r"(__k0_addr) \ + : "r" (0x20000000) ); \ +} while(0) + +#define K1_TO_K0() \ +do { \ + unsigned long __k0_addr; \ + __asm__ __volatile__( \ + "nop;nop;nop;nop;nop;nop;nop\n\t" \ + "la %0, 1f\n\t" \ + "jr %0\n\t" \ + "nop\n\t" \ + "1: nop\n" \ + : "=&r" (__k0_addr)); \ +} while (0) + +#define INVALIDATE_BTB() \ +do { \ + unsigned long tmp; \ + __asm__ __volatile__( \ + ".set mips32\n\t" \ + "mfc0 %0, $16, 7\n\t" \ + "nop\n\t" \ + "ori %0, 2\n\t" \ + "mtc0 %0, $16, 7\n\t" \ + "nop\n\t" \ + : "=&r" (tmp)); \ +} while (0) + +#define SYNC_WB() __asm__ __volatile__ ("sync") + +#else /* CONFIG_JZRISC */ + +#define K0_TO_K1() do { } while (0) +#define K1_TO_K0() do { } while (0) +#define INVALIDATE_BTB() do { } while (0) +#define SYNC_WB() do { } while (0) + +#endif /* CONFIG_JZRISC */ + /* * This macro return a properly sign-extended address suitable as base address * for indexed cache operations. Two issues here: @@ -144,6 +196,7 @@ static inline void flush_icache_line_ind { __iflush_prologue cache_op(Index_Invalidate_I, addr); + INVALIDATE_BTB(); __iflush_epilogue } @@ -151,6 +204,7 @@ static inline void flush_dcache_line_ind { __dflush_prologue cache_op(Index_Writeback_Inv_D, addr); + SYNC_WB(); __dflush_epilogue } @@ -163,6 +217,7 @@ static inline void flush_icache_line(uns { __iflush_prologue cache_op(Hit_Invalidate_I, addr); + INVALIDATE_BTB(); __iflush_epilogue } @@ -170,6 +225,7 @@ static inline void flush_dcache_line(uns { __dflush_prologue cache_op(Hit_Writeback_Inv_D, addr); + SYNC_WB(); __dflush_epilogue } @@ -177,6 +233,7 @@ static inline void invalidate_dcache_lin { __dflush_prologue cache_op(Hit_Invalidate_D, addr); + SYNC_WB(); __dflush_epilogue } @@ -209,6 +266,7 @@ static inline void flush_scache_line(uns static inline void protected_flush_icache_line(unsigned long addr) { protected_cache_op(Hit_Invalidate_I, addr); + INVALIDATE_BTB(); } /* @@ -220,6 +278,7 @@ static inline void protected_flush_icach static inline void protected_writeback_dcache_line(unsigned long addr) { protected_cache_op(Hit_Writeback_Inv_D, addr); + SYNC_WB(); } static inline void protected_writeback_scache_line(unsigned long addr) @@ -396,8 +455,10 @@ static inline void blast_##pfx##cache##l __BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 16) __BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 16) __BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 16) +#ifndef CONFIG_JZRISC __BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 32) __BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 32) +#endif __BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 32) __BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 64) __BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 64) @@ -405,12 +466,122 @@ __BUILD_BLAST_CACHE(s, scache, Index_Wri __BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 128) __BUILD_BLAST_CACHE(inv_d, dcache, Index_Writeback_Inv_D, Hit_Invalidate_D, 16) +#ifndef CONFIG_JZRISC __BUILD_BLAST_CACHE(inv_d, dcache, Index_Writeback_Inv_D, Hit_Invalidate_D, 32) +#endif __BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 16) __BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 32) __BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 64) __BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 128) +#ifdef CONFIG_JZRISC + +static inline void blast_dcache32(void) +{ + unsigned long start = INDEX_BASE; + unsigned long end = start + current_cpu_data.dcache.waysize; + unsigned long ws_inc = 1UL << current_cpu_data.dcache.waybit; + unsigned long ws_end = current_cpu_data.dcache.ways << + current_cpu_data.dcache.waybit; + unsigned long ws, addr; + + for (ws = 0; ws < ws_end; ws += ws_inc) + for (addr = start; addr < end; addr += 0x400) + cache32_unroll32(addr|ws,Index_Writeback_Inv_D); + + SYNC_WB(); +} + +static inline void blast_dcache32_page(unsigned long page) +{ + unsigned long start = page; + unsigned long end = page + PAGE_SIZE; + + do { + cache32_unroll32(start,Hit_Writeback_Inv_D); + start += 0x400; + } while (start < end); + + SYNC_WB(); +} + +static inline void blast_dcache32_page_indexed(unsigned long page) +{ + unsigned long indexmask = current_cpu_data.dcache.waysize - 1; + unsigned long start = INDEX_BASE + (page & indexmask); + unsigned long end = start + PAGE_SIZE; + unsigned long ws_inc = 1UL << current_cpu_data.dcache.waybit; + unsigned long ws_end = current_cpu_data.dcache.ways << + current_cpu_data.dcache.waybit; + unsigned long ws, addr; + + for (ws = 0; ws < ws_end; ws += ws_inc) + for (addr = start; addr < end; addr += 0x400) + cache32_unroll32(addr|ws,Index_Writeback_Inv_D); + + SYNC_WB(); +} + +static inline void blast_icache32(void) +{ + unsigned long start = INDEX_BASE; + unsigned long end = start + current_cpu_data.icache.waysize; + unsigned long ws_inc = 1UL << current_cpu_data.icache.waybit; + unsigned long ws_end = current_cpu_data.icache.ways << + current_cpu_data.icache.waybit; + unsigned long ws, addr; + + K0_TO_K1(); + + for (ws = 0; ws < ws_end; ws += ws_inc) + for (addr = start; addr < end; addr += 0x400) + cache32_unroll32(addr|ws,Index_Invalidate_I); + + INVALIDATE_BTB(); + + K1_TO_K0(); +} + +static inline void blast_icache32_page(unsigned long page) +{ + unsigned long start = page; + unsigned long end = page + PAGE_SIZE; + + K0_TO_K1(); + + do { + cache32_unroll32(start,Hit_Invalidate_I); + start += 0x400; + } while (start < end); + + INVALIDATE_BTB(); + + K1_TO_K0(); +} + +static inline void blast_icache32_page_indexed(unsigned long page) +{ + unsigned long indexmask = current_cpu_data.icache.waysize - 1; + unsigned long start = INDEX_BASE + (page & indexmask); + unsigned long end = start + PAGE_SIZE; + unsigned long ws_inc = 1UL << current_cpu_data.icache.waybit; + unsigned long ws_end = current_cpu_data.icache.ways << + current_cpu_data.icache.waybit; + unsigned long ws, addr; + + K0_TO_K1(); + + for (ws = 0; ws < ws_end; ws += ws_inc) + for (addr = start; addr < end; addr += 0x400) + cache32_unroll32(addr|ws,Index_Invalidate_I); + + INVALIDATE_BTB(); + + K1_TO_K0(); +} + +#endif /* CONFIG_JZRISC */ + /* build blast_xxx_range, protected_blast_xxx_range */ #define __BUILD_BLAST_CACHE_RANGE(pfx, desc, hitop, prot) \ static inline void prot##blast_##pfx##cache##_range(unsigned long start, \ @@ -432,13 +603,73 @@ static inline void prot##blast_##pfx##ca __##pfx##flush_epilogue \ } +#ifndef CONFIG_JZRISC __BUILD_BLAST_CACHE_RANGE(d, dcache, Hit_Writeback_Inv_D, protected_) +#endif __BUILD_BLAST_CACHE_RANGE(s, scache, Hit_Writeback_Inv_SD, protected_) +#ifndef CONFIG_JZRISC __BUILD_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I, protected_) __BUILD_BLAST_CACHE_RANGE(d, dcache, Hit_Writeback_Inv_D, ) +#endif __BUILD_BLAST_CACHE_RANGE(s, scache, Hit_Writeback_Inv_SD, ) /* blast_inv_dcache_range */ __BUILD_BLAST_CACHE_RANGE(inv_d, dcache, Hit_Invalidate_D, ) __BUILD_BLAST_CACHE_RANGE(inv_s, scache, Hit_Invalidate_SD, ) +#ifdef CONFIG_JZRISC + +static inline void protected_blast_dcache_range(unsigned long start, + unsigned long end) +{ + unsigned long lsize = cpu_dcache_line_size(); + unsigned long addr = start & ~(lsize - 1); + unsigned long aend = (end - 1) & ~(lsize - 1); + + while (1) { + protected_cache_op(Hit_Writeback_Inv_D, addr); + if (addr == aend) + break; + addr += lsize; + } + SYNC_WB(); +} + +static inline void protected_blast_icache_range(unsigned long start, + unsigned long end) +{ + unsigned long lsize = cpu_icache_line_size(); + unsigned long addr = start & ~(lsize - 1); + unsigned long aend = (end - 1) & ~(lsize - 1); + + K0_TO_K1(); + + while (1) { + protected_cache_op(Hit_Invalidate_I, addr); + if (addr == aend) + break; + addr += lsize; + } + INVALIDATE_BTB(); + + K1_TO_K0(); +} + +static inline void blast_dcache_range(unsigned long start, + unsigned long end) +{ + unsigned long lsize = cpu_dcache_line_size(); + unsigned long addr = start & ~(lsize - 1); + unsigned long aend = (end - 1) & ~(lsize - 1); + + while (1) { + cache_op(Hit_Writeback_Inv_D, addr); + if (addr == aend) + break; + addr += lsize; + } + SYNC_WB(); +} + +#endif /* CONFIG_JZRISC */ + #endif /* _ASM_R4KCACHE_H */