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turn the wrtsl54gs workaround into a more generic fix and reduce the chance of it...
[openwrt.git] / target / linux / brcm-2.4 / patches / 003-bcm47xx_cache_fixes.patch
diff --git a/target/linux/brcm-2.4/patches/003-bcm47xx_cache_fixes.patch b/target/linux/brcm-2.4/patches/003-bcm47xx_cache_fixes.patch
index e971e7f..ebd9872 100644 (file)
--- a/target/linux/brcm-2.4/patches/003-bcm47xx_cache_fixes.patch
+++ b/target/linux/brcm-2.4/patches/003-bcm47xx_cache_fixes.patch
@@ -1,7 +1,8 @@
-diff -urN linux.old/arch/mips/kernel/entry.S linux.dev/arch/mips/kernel/entry.S
---- linux.old/arch/mips/kernel/entry.S 2005-07-05 16:46:49.000000000 +0200
-+++ linux.dev/arch/mips/kernel/entry.S 2005-07-06 11:23:55.000000000 +0200
-@@ -100,6 +100,10 @@
+Index: linux-2.4.35.4/arch/mips/kernel/entry.S
+===================================================================
+--- linux-2.4.35.4.orig/arch/mips/kernel/entry.S
++++ linux-2.4.35.4/arch/mips/kernel/entry.S
+@@ -100,6 +100,10 @@ END(except_vec1_generic)
                 * and R4400 SC and MC versions.
                 */
  NESTED(except_vec3_generic, 0, sp)
@@ -12,9 +13,10 @@ diff -urN linux.old/arch/mips/kernel/entry.S linux.dev/arch/mips/kernel/entry.S
  #if R5432_CP0_INTERRUPT_WAR
                mfc0    k0, CP0_INDEX
  #endif
-diff -urN linux.old/arch/mips/mm/c-r4k.c linux.dev/arch/mips/mm/c-r4k.c
---- linux.old/arch/mips/mm/c-r4k.c     2005-07-05 16:46:49.000000000 +0200
-+++ linux.dev/arch/mips/mm/c-r4k.c     2005-07-06 11:23:55.000000000 +0200
+Index: linux-2.4.35.4/arch/mips/mm/c-r4k.c
+===================================================================
+--- linux-2.4.35.4.orig/arch/mips/mm/c-r4k.c
++++ linux-2.4.35.4/arch/mips/mm/c-r4k.c
 @@ -14,6 +14,12 @@
  #include <linux/mm.h>
  #include <linux/bitops.h>
@@ -28,16 +30,15 @@ diff -urN linux.old/arch/mips/mm/c-r4k.c linux.dev/arch/mips/mm/c-r4k.c
  #include <asm/bcache.h>
  #include <asm/bootinfo.h>
  #include <asm/cacheops.h>
-@@ -40,6 +46,8 @@
+@@ -40,6 +46,7 @@ static struct bcache_ops no_sc_ops = {
        .bc_inv = (void *)no_sc_noop
  };
  
 +int bcm4710 = 0;
-+EXPORT_SYMBOL(bcm4710);
  struct bcache_ops *bcops = &no_sc_ops;
  
  #define cpu_is_r4600_v1_x()   ((read_c0_prid() & 0xfffffff0) == 0x2010)
-@@ -64,8 +72,10 @@
+@@ -64,8 +71,10 @@ static inline void r4k_blast_dcache_page
  static inline void r4k_blast_dcache_page_setup(void)
  {
        unsigned long dc_lsize = current_cpu_data.dcache.linesz;
@@ -50,7 +51,7 @@ diff -urN linux.old/arch/mips/mm/c-r4k.c linux.dev/arch/mips/mm/c-r4k.c
                r4k_blast_dcache_page = blast_dcache16_page;
        else if (dc_lsize == 32)
                r4k_blast_dcache_page = r4k_blast_dcache_page_dc32;
-@@ -77,7 +87,9 @@
+@@ -77,7 +86,9 @@ static void r4k_blast_dcache_page_indexe
  {
        unsigned long dc_lsize = current_cpu_data.dcache.linesz;
  
@@ -61,7 +62,7 @@ diff -urN linux.old/arch/mips/mm/c-r4k.c linux.dev/arch/mips/mm/c-r4k.c
                r4k_blast_dcache_page_indexed = blast_dcache16_page_indexed;
        else if (dc_lsize == 32)
                r4k_blast_dcache_page_indexed = blast_dcache32_page_indexed;
-@@ -89,7 +101,9 @@
+@@ -89,7 +100,9 @@ static inline void r4k_blast_dcache_setu
  {
        unsigned long dc_lsize = current_cpu_data.dcache.linesz;
  
@@ -72,7 +73,7 @@ diff -urN linux.old/arch/mips/mm/c-r4k.c linux.dev/arch/mips/mm/c-r4k.c
                r4k_blast_dcache = blast_dcache16;
        else if (dc_lsize == 32)
                r4k_blast_dcache = blast_dcache32;
-@@ -266,6 +280,7 @@
+@@ -266,6 +279,7 @@ static void r4k___flush_cache_all(void)
        r4k_blast_dcache();
        r4k_blast_icache();
  
@@ -80,7 +81,7 @@ diff -urN linux.old/arch/mips/mm/c-r4k.c linux.dev/arch/mips/mm/c-r4k.c
        switch (current_cpu_data.cputype) {
        case CPU_R4000SC:
        case CPU_R4000MC:
-@@ -304,10 +319,10 @@
+@@ -304,10 +318,10 @@ static void r4k_flush_cache_mm(struct mm
         * Kludge alert.  For obscure reasons R4000SC and R4400SC go nuts if we
         * only flush the primary caches but R10000 and R12000 behave sane ...
         */
@@ -93,7 +94,7 @@ diff -urN linux.old/arch/mips/mm/c-r4k.c linux.dev/arch/mips/mm/c-r4k.c
                r4k_blast_scache();
  }
  
-@@ -383,12 +398,15 @@
+@@ -383,12 +397,15 @@ static void r4k_flush_icache_range(unsig
        unsigned long ic_lsize = current_cpu_data.icache.linesz;
        unsigned long addr, aend;
  
@@ -111,7 +112,7 @@ diff -urN linux.old/arch/mips/mm/c-r4k.c linux.dev/arch/mips/mm/c-r4k.c
  
                        while (1) {
                                /* Hit_Writeback_Inv_D */
-@@ -403,8 +421,6 @@
+@@ -403,8 +420,6 @@ static void r4k_flush_icache_range(unsig
        if (end - start > icache_size)
                r4k_blast_icache();
        else {
@@ -120,7 +121,7 @@ diff -urN linux.old/arch/mips/mm/c-r4k.c linux.dev/arch/mips/mm/c-r4k.c
                while (1) {
                        /* Hit_Invalidate_I */
                        protected_flush_icache_line(addr);
-@@ -413,6 +429,9 @@
+@@ -413,6 +428,9 @@ static void r4k_flush_icache_range(unsig
                        addr += ic_lsize;
                }
        }
@@ -130,7 +131,7 @@ diff -urN linux.old/arch/mips/mm/c-r4k.c linux.dev/arch/mips/mm/c-r4k.c
  }
  
  /*
-@@ -443,7 +462,8 @@
+@@ -443,7 +461,8 @@ static void r4k_flush_icache_page(struct
        if (cpu_has_subset_pcaches) {
                unsigned long addr = (unsigned long) page_address(page);
  
@@ -140,7 +141,7 @@ diff -urN linux.old/arch/mips/mm/c-r4k.c linux.dev/arch/mips/mm/c-r4k.c
                ClearPageDcacheDirty(page);
  
                return;
-@@ -451,6 +471,7 @@
+@@ -451,6 +470,7 @@ static void r4k_flush_icache_page(struct
  
        if (!cpu_has_ic_fills_f_dc) {
                unsigned long addr = (unsigned long) page_address(page);
@@ -148,7 +149,7 @@ diff -urN linux.old/arch/mips/mm/c-r4k.c linux.dev/arch/mips/mm/c-r4k.c
                r4k_blast_dcache_page(addr);
                ClearPageDcacheDirty(page);
        }
-@@ -477,7 +498,7 @@
+@@ -477,7 +497,7 @@ static void r4k_dma_cache_wback_inv(unsi
        /* Catch bad driver code */
        BUG_ON(size == 0);
  
@@ -157,7 +158,7 @@ diff -urN linux.old/arch/mips/mm/c-r4k.c linux.dev/arch/mips/mm/c-r4k.c
                unsigned long sc_lsize = current_cpu_data.scache.linesz;
  
                if (size >= scache_size) {
-@@ -509,6 +530,8 @@
+@@ -509,6 +529,8 @@ static void r4k_dma_cache_wback_inv(unsi
                R4600_HIT_CACHEOP_WAR_IMPL;
                a = addr & ~(dc_lsize - 1);
                end = (addr + size - 1) & ~(dc_lsize - 1);
@@ -166,7 +167,7 @@ diff -urN linux.old/arch/mips/mm/c-r4k.c linux.dev/arch/mips/mm/c-r4k.c
                while (1) {
                        flush_dcache_line(a);   /* Hit_Writeback_Inv_D */
                        if (a == end)
-@@ -527,7 +550,7 @@
+@@ -527,7 +549,7 @@ static void r4k_dma_cache_inv(unsigned l
        /* Catch bad driver code */
        BUG_ON(size == 0);
  
@@ -175,7 +176,7 @@ diff -urN linux.old/arch/mips/mm/c-r4k.c linux.dev/arch/mips/mm/c-r4k.c
                unsigned long sc_lsize = current_cpu_data.scache.linesz;
  
                if (size >= scache_size) {
-@@ -554,6 +577,8 @@
+@@ -554,6 +576,8 @@ static void r4k_dma_cache_inv(unsigned l
                R4600_HIT_CACHEOP_WAR_IMPL;
                a = addr & ~(dc_lsize - 1);
                end = (addr + size - 1) & ~(dc_lsize - 1);
@@ -184,7 +185,7 @@ diff -urN linux.old/arch/mips/mm/c-r4k.c linux.dev/arch/mips/mm/c-r4k.c
                while (1) {
                        flush_dcache_line(a);   /* Hit_Writeback_Inv_D */
                        if (a == end)
-@@ -577,6 +602,8 @@
+@@ -577,6 +601,8 @@ static void r4k_flush_cache_sigtramp(uns
        unsigned long dc_lsize = current_cpu_data.dcache.linesz;
  
        R4600_HIT_CACHEOP_WAR_IMPL;
@@ -193,7 +194,7 @@ diff -urN linux.old/arch/mips/mm/c-r4k.c linux.dev/arch/mips/mm/c-r4k.c
        protected_writeback_dcache_line(addr & ~(dc_lsize - 1));
        protected_flush_icache_line(addr & ~(ic_lsize - 1));
        if (MIPS4K_ICACHE_REFILL_WAR) {
-@@ -986,10 +1013,12 @@
+@@ -986,10 +1012,12 @@ static void __init setup_scache(void)
        case CPU_R4000MC:
        case CPU_R4400SC:
        case CPU_R4400MC:
@@ -210,7 +211,7 @@ diff -urN linux.old/arch/mips/mm/c-r4k.c linux.dev/arch/mips/mm/c-r4k.c
                break;
  
        case CPU_R10000:
-@@ -1041,6 +1070,19 @@
+@@ -1041,6 +1069,19 @@ static void __init setup_scache(void)
  static inline void coherency_setup(void)
  {
        change_c0_config(CONF_CM_CMASK, CONF_CM_DEFAULT);
@@ -230,7 +231,7 @@ diff -urN linux.old/arch/mips/mm/c-r4k.c linux.dev/arch/mips/mm/c-r4k.c
  
        /*
         * c0_status.cu=0 specifies that updates by the sc instruction use
-@@ -1073,6 +1115,12 @@
+@@ -1073,6 +1114,12 @@ void __init ld_mmu_r4xx0(void)
        memcpy((void *)(KSEG0 + 0x100), &except_vec2_generic, 0x80);
        memcpy((void *)(KSEG1 + 0x100), &except_vec2_generic, 0x80);
  
@@ -243,9 +244,10 @@ diff -urN linux.old/arch/mips/mm/c-r4k.c linux.dev/arch/mips/mm/c-r4k.c
        probe_pcache();
        setup_scache();
  
-diff -urN linux.old/arch/mips/mm/tlbex-mips32.S linux.dev/arch/mips/mm/tlbex-mips32.S
---- linux.old/arch/mips/mm/tlbex-mips32.S      2005-07-05 16:46:49.000000000 +0200
-+++ linux.dev/arch/mips/mm/tlbex-mips32.S      2005-07-06 11:23:56.000000000 +0200
+Index: linux-2.4.35.4/arch/mips/mm/tlbex-mips32.S
+===================================================================
+--- linux-2.4.35.4.orig/arch/mips/mm/tlbex-mips32.S
++++ linux-2.4.35.4/arch/mips/mm/tlbex-mips32.S
 @@ -90,6 +90,9 @@
        .set    noat
        LEAF(except_vec0_r4000)
@@ -256,9 +258,10 @@ diff -urN linux.old/arch/mips/mm/tlbex-mips32.S linux.dev/arch/mips/mm/tlbex-mip
  #ifdef CONFIG_SMP
        mfc0    k1, CP0_CONTEXT
        la      k0, pgd_current
-diff -urN linux.old/include/asm-mips/r4kcache.h linux.dev/include/asm-mips/r4kcache.h
---- linux.old/include/asm-mips/r4kcache.h      2005-07-05 16:46:49.000000000 +0200
-+++ linux.dev/include/asm-mips/r4kcache.h      2005-07-06 12:52:57.000000000 +0200
+Index: linux-2.4.35.4/include/asm-mips/r4kcache.h
+===================================================================
+--- linux-2.4.35.4.orig/include/asm-mips/r4kcache.h
++++ linux-2.4.35.4/include/asm-mips/r4kcache.h
 @@ -15,6 +15,18 @@
  #include <asm/asm.h>
  #include <asm/cacheops.h>
@@ -306,7 +309,7 @@ diff -urN linux.old/include/asm-mips/r4kcache.h linux.dev/include/asm-mips/r4kca
  }
  
  static inline void flush_scache_line_indexed(unsigned long addr)
-@@ -47,6 +72,7 @@
+@@ -47,6 +72,7 @@ static inline void flush_icache_line(uns
  
  static inline void flush_dcache_line(unsigned long addr)
  {
@@ -314,7 +317,7 @@ diff -urN linux.old/include/asm-mips/r4kcache.h linux.dev/include/asm-mips/r4kca
        cache_op(Hit_Writeback_Inv_D, addr);
  }
  
-@@ -91,6 +117,7 @@
+@@ -91,6 +117,7 @@ static inline void protected_flush_icach
   */
  static inline void protected_writeback_dcache_line(unsigned long addr)
  {
@@ -322,7 +325,7 @@ diff -urN linux.old/include/asm-mips/r4kcache.h linux.dev/include/asm-mips/r4kca
        __asm__ __volatile__(
                ".set noreorder\n\t"
                ".set mips3\n"
-@@ -138,6 +165,62 @@
+@@ -138,6 +165,62 @@ static inline void invalidate_tcache_pag
                : "r" (base),                                           \
                  "i" (op));
  
@@ -385,7 +388,7 @@ diff -urN linux.old/include/asm-mips/r4kcache.h linux.dev/include/asm-mips/r4kca
  static inline void blast_dcache16(void)
  {
        unsigned long start = KSEG0;
-@@ -148,8 +231,9 @@
+@@ -148,8 +231,9 @@ static inline void blast_dcache16(void)
        unsigned long ws, addr;
  
        for (ws = 0; ws < ws_end; ws += ws_inc) 
@@ -396,7 +399,7 @@ diff -urN linux.old/include/asm-mips/r4kcache.h linux.dev/include/asm-mips/r4kca
  }
  
  static inline void blast_dcache16_page(unsigned long page)
-@@ -173,8 +257,9 @@
+@@ -173,8 +257,9 @@ static inline void blast_dcache16_page_i
        unsigned long ws, addr;
  
        for (ws = 0; ws < ws_end; ws += ws_inc) 
@@ -407,7 +410,7 @@ diff -urN linux.old/include/asm-mips/r4kcache.h linux.dev/include/asm-mips/r4kca
  }
  
  static inline void blast_icache16(void)
-@@ -196,6 +281,7 @@
+@@ -196,6 +281,7 @@ static inline void blast_icache16_page(u
        unsigned long start = page;
        unsigned long end = start + PAGE_SIZE;
  
@@ -415,7 +418,7 @@ diff -urN linux.old/include/asm-mips/r4kcache.h linux.dev/include/asm-mips/r4kca
        do {
                cache16_unroll32(start,Hit_Invalidate_I);
                start += 0x200;
-@@ -281,6 +367,7 @@
+@@ -281,6 +367,7 @@ static inline void blast_scache16_page_i
                : "r" (base),                                           \
                  "i" (op));
  
@@ -423,7 +426,7 @@ diff -urN linux.old/include/asm-mips/r4kcache.h linux.dev/include/asm-mips/r4kca
  static inline void blast_dcache32(void)
  {
        unsigned long start = KSEG0;
-@@ -291,8 +378,9 @@
+@@ -291,8 +378,9 @@ static inline void blast_dcache32(void)
        unsigned long ws, addr;
  
        for (ws = 0; ws < ws_end; ws += ws_inc) 
@@ -434,7 +437,7 @@ diff -urN linux.old/include/asm-mips/r4kcache.h linux.dev/include/asm-mips/r4kca
  }
  
  static inline void blast_dcache32_page(unsigned long page)
-@@ -316,8 +404,9 @@
+@@ -316,8 +404,9 @@ static inline void blast_dcache32_page_i
        unsigned long ws, addr;
  
        for (ws = 0; ws < ws_end; ws += ws_inc) 
@@ -445,7 +448,7 @@ diff -urN linux.old/include/asm-mips/r4kcache.h linux.dev/include/asm-mips/r4kca
  }
  
  static inline void blast_icache32(void)
-@@ -339,6 +428,7 @@
+@@ -339,6 +428,7 @@ static inline void blast_icache32_page(u
        unsigned long start = page;
        unsigned long end = start + PAGE_SIZE;
  
@@ -453,7 +456,7 @@ diff -urN linux.old/include/asm-mips/r4kcache.h linux.dev/include/asm-mips/r4kca
        do {
                cache32_unroll32(start,Hit_Invalidate_I);
                start += 0x400;
-@@ -443,6 +533,7 @@
+@@ -443,6 +533,7 @@ static inline void blast_icache64_page(u
        unsigned long start = page;
        unsigned long end = start + PAGE_SIZE;
  
@@ -461,9 +464,10 @@ diff -urN linux.old/include/asm-mips/r4kcache.h linux.dev/include/asm-mips/r4kca
        do {
                cache64_unroll32(start,Hit_Invalidate_I);
                start += 0x800;
-diff -urN linux.old/include/asm-mips/stackframe.h linux.dev/include/asm-mips/stackframe.h
---- linux.old/include/asm-mips/stackframe.h    2005-07-05 16:46:49.000000000 +0200
-+++ linux.dev/include/asm-mips/stackframe.h    2005-07-06 11:23:56.000000000 +0200
+Index: linux-2.4.35.4/include/asm-mips/stackframe.h
+===================================================================
+--- linux-2.4.35.4.orig/include/asm-mips/stackframe.h
++++ linux-2.4.35.4/include/asm-mips/stackframe.h
 @@ -209,6 +209,20 @@
  
  #endif
@@ -485,10 +489,11 @@ diff -urN linux.old/include/asm-mips/stackframe.h linux.dev/include/asm-mips/sta
  #define RESTORE_SP                                       \
                lw      sp,  PT_R29(sp);                 \
  
-diff -urN linux.old/mm/memory.c linux.dev/mm/memory.c
---- linux.old/mm/memory.c      2005-04-04 03:42:20.000000000 +0200
-+++ linux.dev/mm/memory.c      2005-07-06 11:23:56.000000000 +0200
-@@ -925,6 +925,7 @@
+Index: linux-2.4.35.4/mm/memory.c
+===================================================================
+--- linux-2.4.35.4.orig/mm/memory.c
++++ linux-2.4.35.4/mm/memory.c
+@@ -927,6 +927,7 @@ static inline void break_cow(struct vm_a
        flush_page_to_ram(new_page);
        flush_cache_page(vma, address);
        establish_pte(vma, address, page_table, pte_mkwrite(pte_mkdirty(mk_pte(new_page, vma->vm_page_prot))));
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