diff options
Diffstat (limited to 'target/linux/xburst/patches-2.6.35/002-xburst-cache-quirks.patch')
| -rw-r--r-- | target/linux/xburst/patches-2.6.35/002-xburst-cache-quirks.patch | 334 |
1 files changed, 334 insertions, 0 deletions
diff --git a/target/linux/xburst/patches-2.6.35/002-xburst-cache-quirks.patch b/target/linux/xburst/patches-2.6.35/002-xburst-cache-quirks.patch new file mode 100644 index 0000000..9b214d7 --- /dev/null +++ b/target/linux/xburst/patches-2.6.35/002-xburst-cache-quirks.patch @@ -0,0 +1,334 @@ +From 296b9882edc2e6779e6c3d97f537166aa2334b93 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 */ |