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Diffstat (limited to 'target/linux/brcm-2.4/patches/003-bcm47xx_cache_fixes.patch')
-rw-r--r--target/linux/brcm-2.4/patches/003-bcm47xx_cache_fixes.patch491
1 files changed, 0 insertions, 491 deletions
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
deleted file mode 100644
index 28f8ac48b6..0000000000
--- a/target/linux/brcm-2.4/patches/003-bcm47xx_cache_fixes.patch
+++ /dev/null
@@ -1,491 +0,0 @@
---- a/arch/mips/kernel/entry.S
-+++ b/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)
-+#ifdef CONFIG_BCM4710
-+ nop
-+ nop
-+#endif
- #if R5432_CP0_INTERRUPT_WAR
- mfc0 k0, CP0_INDEX
- #endif
---- a/arch/mips/mm/c-r4k.c
-+++ b/arch/mips/mm/c-r4k.c
-@@ -14,6 +14,12 @@
- #include <linux/mm.h>
- #include <linux/bitops.h>
-
-+#ifdef CONFIG_BCM4710
-+#include "../bcm947xx/include/typedefs.h"
-+#include "../bcm947xx/include/sbconfig.h"
-+#include <asm/paccess.h>
-+#endif
-+
- #include <asm/bcache.h>
- #include <asm/bootinfo.h>
- #include <asm/cacheops.h>
-@@ -40,6 +46,7 @@ static struct bcache_ops no_sc_ops = {
- .bc_inv = (void *)no_sc_noop
- };
-
-+int bcm4710 = 0;
- struct bcache_ops *bcops = &no_sc_ops;
-
- #define cpu_is_r4600_v1_x() ((read_c0_prid() & 0xfffffff0) == 0x2010)
-@@ -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;
--
-- if (dc_lsize == 16)
-+
-+ if (bcm4710)
-+ r4k_blast_dcache_page = blast_dcache_page;
-+ else if (dc_lsize == 16)
- r4k_blast_dcache_page = blast_dcache16_page;
- else if (dc_lsize == 32)
- r4k_blast_dcache_page = r4k_blast_dcache_page_dc32;
-@@ -77,7 +86,9 @@ static void r4k_blast_dcache_page_indexe
- {
- unsigned long dc_lsize = current_cpu_data.dcache.linesz;
-
-- if (dc_lsize == 16)
-+ if (bcm4710)
-+ r4k_blast_dcache_page_indexed = blast_dcache_page_indexed;
-+ else if (dc_lsize == 16)
- 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 +100,9 @@ static inline void r4k_blast_dcache_setu
- {
- unsigned long dc_lsize = current_cpu_data.dcache.linesz;
-
-- if (dc_lsize == 16)
-+ if (bcm4710)
-+ r4k_blast_dcache = blast_dcache;
-+ else if (dc_lsize == 16)
- r4k_blast_dcache = blast_dcache16;
- else if (dc_lsize == 32)
- r4k_blast_dcache = blast_dcache32;
-@@ -266,6 +279,7 @@ static void r4k___flush_cache_all(void)
- r4k_blast_dcache();
- r4k_blast_icache();
-
-+ if (!bcm4710)
- switch (current_cpu_data.cputype) {
- case CPU_R4000SC:
- case CPU_R4000MC:
-@@ -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 ...
- */
-- if (current_cpu_data.cputype == CPU_R4000SC ||
-+ if (!bcm4710 && (current_cpu_data.cputype == CPU_R4000SC ||
- current_cpu_data.cputype == CPU_R4000MC ||
- current_cpu_data.cputype == CPU_R4400SC ||
-- current_cpu_data.cputype == CPU_R4400MC)
-+ current_cpu_data.cputype == CPU_R4400MC))
- r4k_blast_scache();
- }
-
-@@ -383,12 +397,15 @@ static void r4k_flush_icache_range(unsig
- unsigned long ic_lsize = current_cpu_data.icache.linesz;
- unsigned long addr, aend;
-
-+ addr = start & ~(dc_lsize - 1);
-+ aend = (end - 1) & ~(dc_lsize - 1);
-+
- if (!cpu_has_ic_fills_f_dc) {
- if (end - start > dcache_size)
- r4k_blast_dcache();
- else {
-- addr = start & ~(dc_lsize - 1);
-- aend = (end - 1) & ~(dc_lsize - 1);
-+ BCM4710_PROTECTED_FILL_TLB(addr);
-+ BCM4710_PROTECTED_FILL_TLB(aend);
-
- while (1) {
- /* Hit_Writeback_Inv_D */
-@@ -403,8 +420,6 @@ static void r4k_flush_icache_range(unsig
- if (end - start > icache_size)
- r4k_blast_icache();
- else {
-- addr = start & ~(ic_lsize - 1);
-- aend = (end - 1) & ~(ic_lsize - 1);
- while (1) {
- /* Hit_Invalidate_I */
- protected_flush_icache_line(addr);
-@@ -413,6 +428,9 @@ static void r4k_flush_icache_range(unsig
- addr += ic_lsize;
- }
- }
-+
-+ if (bcm4710)
-+ flush_cache_all();
- }
-
- /*
-@@ -443,7 +461,8 @@ static void r4k_flush_icache_page(struct
- if (cpu_has_subset_pcaches) {
- unsigned long addr = (unsigned long) page_address(page);
-
-- r4k_blast_scache_page(addr);
-+ if (!bcm4710)
-+ r4k_blast_scache_page(addr);
- ClearPageDcacheDirty(page);
-
- return;
-@@ -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);
-+
- r4k_blast_dcache_page(addr);
- ClearPageDcacheDirty(page);
- }
-@@ -477,7 +497,7 @@ static void r4k_dma_cache_wback_inv(unsi
- /* Catch bad driver code */
- BUG_ON(size == 0);
-
-- if (cpu_has_subset_pcaches) {
-+ if (!bcm4710 && cpu_has_subset_pcaches) {
- unsigned long sc_lsize = current_cpu_data.scache.linesz;
-
- if (size >= scache_size) {
-@@ -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);
-+ BCM4710_FILL_TLB(a);
-+ BCM4710_FILL_TLB(end);
- while (1) {
- flush_dcache_line(a); /* Hit_Writeback_Inv_D */
- if (a == end)
-@@ -527,7 +549,7 @@ static void r4k_dma_cache_inv(unsigned l
- /* Catch bad driver code */
- BUG_ON(size == 0);
-
-- if (cpu_has_subset_pcaches) {
-+ if (!bcm4710 && (cpu_has_subset_pcaches)) {
- unsigned long sc_lsize = current_cpu_data.scache.linesz;
-
- if (size >= scache_size) {
-@@ -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);
-+ BCM4710_FILL_TLB(a);
-+ BCM4710_FILL_TLB(end);
- while (1) {
- flush_dcache_line(a); /* Hit_Writeback_Inv_D */
- if (a == end)
-@@ -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;
-+ BCM4710_PROTECTED_FILL_TLB(addr);
-+ BCM4710_PROTECTED_FILL_TLB(addr + 4);
- protected_writeback_dcache_line(addr & ~(dc_lsize - 1));
- protected_flush_icache_line(addr & ~(ic_lsize - 1));
- if (MIPS4K_ICACHE_REFILL_WAR) {
-@@ -986,10 +1012,12 @@ static void __init setup_scache(void)
- case CPU_R4000MC:
- case CPU_R4400SC:
- case CPU_R4400MC:
-- probe_scache_kseg1 = (probe_func_t) (KSEG1ADDR(&probe_scache));
-- sc_present = probe_scache_kseg1(config);
-- if (sc_present)
-- c->options |= MIPS_CPU_CACHE_CDEX_S;
-+ if (!bcm4710) {
-+ probe_scache_kseg1 = (probe_func_t) (KSEG1ADDR(&probe_scache));
-+ sc_present = probe_scache_kseg1(config);
-+ if (sc_present)
-+ c->options |= MIPS_CPU_CACHE_CDEX_S;
-+ }
- break;
-
- case CPU_R10000:
-@@ -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);
-+
-+#if defined(CONFIG_BCM4310) || defined(CONFIG_BCM4704) || defined(CONFIG_BCM5365)
-+ if (BCM330X(current_cpu_data.processor_id)) {
-+ uint32 cm;
-+
-+ cm = read_c0_diag();
-+ /* Enable icache */
-+ cm |= (1 << 31);
-+ /* Enable dcache */
-+ cm |= (1 << 30);
-+ write_c0_diag(cm);
-+ }
-+#endif
-
- /*
- * c0_status.cu=0 specifies that updates by the sc instruction use
-@@ -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);
-
-+ if (current_cpu_data.cputype == CPU_BCM4710 && (current_cpu_data.processor_id & PRID_REV_MASK) == 0) {
-+ printk("Enabling BCM4710A0 cache workarounds.\n");
-+ bcm4710 = 1;
-+ } else
-+ bcm4710 = 0;
-+
- probe_pcache();
- setup_scache();
-
---- a/arch/mips/mm/tlbex-mips32.S
-+++ b/arch/mips/mm/tlbex-mips32.S
-@@ -90,6 +90,9 @@
- .set noat
- LEAF(except_vec0_r4000)
- .set mips3
-+#ifdef CONFIG_BCM4704
-+ nop
-+#endif
- #ifdef CONFIG_SMP
- mfc0 k1, CP0_CONTEXT
- la k0, pgd_current
---- a/include/asm-mips/r4kcache.h
-+++ b/include/asm-mips/r4kcache.h
-@@ -15,6 +15,18 @@
- #include <asm/asm.h>
- #include <asm/cacheops.h>
-
-+#ifdef CONFIG_BCM4710
-+#define BCM4710_DUMMY_RREG() (((sbconfig_t *)(KSEG1ADDR(SB_ENUM_BASE + SBCONFIGOFF)))->sbimstate)
-+
-+#define BCM4710_FILL_TLB(addr) (*(volatile unsigned long *)(addr))
-+#define BCM4710_PROTECTED_FILL_TLB(addr) ({ unsigned long x; get_dbe(x, (volatile unsigned long *)(addr)); })
-+#else
-+#define BCM4710_DUMMY_RREG()
-+
-+#define BCM4710_FILL_TLB(addr)
-+#define BCM4710_PROTECTED_FILL_TLB(addr)
-+#endif
-+
- #define cache_op(op,addr) \
- __asm__ __volatile__( \
- " .set noreorder \n" \
-@@ -27,12 +39,25 @@
-
- static inline void flush_icache_line_indexed(unsigned long addr)
- {
-- cache_op(Index_Invalidate_I, addr);
-+ unsigned int way;
-+ unsigned long ws_inc = 1UL << current_cpu_data.dcache.waybit;
-+
-+ for (way = 0; way < current_cpu_data.dcache.ways; way++) {
-+ cache_op(Index_Invalidate_I, addr);
-+ addr += ws_inc;
-+ }
- }
-
- static inline void flush_dcache_line_indexed(unsigned long addr)
- {
-- cache_op(Index_Writeback_Inv_D, addr);
-+ unsigned int way;
-+ unsigned long ws_inc = 1UL << current_cpu_data.dcache.waybit;
-+
-+ for (way = 0; way < current_cpu_data.dcache.ways; way++) {
-+ BCM4710_DUMMY_RREG();
-+ cache_op(Index_Writeback_Inv_D, addr);
-+ addr += ws_inc;
-+ }
- }
-
- static inline void flush_scache_line_indexed(unsigned long addr)
-@@ -47,6 +72,7 @@ static inline void flush_icache_line(uns
-
- static inline void flush_dcache_line(unsigned long addr)
- {
-+ BCM4710_DUMMY_RREG();
- cache_op(Hit_Writeback_Inv_D, addr);
- }
-
-@@ -91,6 +117,7 @@ static inline void protected_flush_icach
- */
- static inline void protected_writeback_dcache_line(unsigned long addr)
- {
-+ BCM4710_DUMMY_RREG();
- __asm__ __volatile__(
- ".set noreorder\n\t"
- ".set mips3\n"
-@@ -138,6 +165,62 @@ static inline void invalidate_tcache_pag
- : "r" (base), \
- "i" (op));
-
-+#define cache_unroll(base,op) \
-+ __asm__ __volatile__(" \
-+ .set noreorder; \
-+ .set mips3; \
-+ cache %1, (%0); \
-+ .set mips0; \
-+ .set reorder" \
-+ : \
-+ : "r" (base), \
-+ "i" (op));
-+
-+
-+static inline void blast_dcache(void)
-+{
-+ unsigned long start = KSEG0;
-+ unsigned long dcache_size = current_cpu_data.dcache.waysize * current_cpu_data.dcache.ways;
-+ unsigned long end = (start + dcache_size);
-+
-+ while(start < end) {
-+ BCM4710_DUMMY_RREG();
-+ cache_unroll(start,Index_Writeback_Inv_D);
-+ start += current_cpu_data.dcache.linesz;
-+ }
-+}
-+
-+static inline void blast_dcache_page(unsigned long page)
-+{
-+ unsigned long start = page;
-+ unsigned long end = start + PAGE_SIZE;
-+
-+ BCM4710_FILL_TLB(start);
-+ do {
-+ BCM4710_DUMMY_RREG();
-+ cache_unroll(start,Hit_Writeback_Inv_D);
-+ start += current_cpu_data.dcache.linesz;
-+ } while (start < end);
-+}
-+
-+static inline void blast_dcache_page_indexed(unsigned long page)
-+{
-+ unsigned long start = page;
-+ 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) {
-+ start = page + ws;
-+ for (addr = start; addr < end; addr += current_cpu_data.dcache.linesz) {
-+ BCM4710_DUMMY_RREG();
-+ cache_unroll(addr,Index_Writeback_Inv_D);
-+ }
-+ }
-+}
-+
- static inline void blast_dcache16(void)
- {
- unsigned long start = KSEG0;
-@@ -148,8 +231,9 @@ static inline void blast_dcache16(void)
- unsigned long ws, addr;
-
- for (ws = 0; ws < ws_end; ws += ws_inc)
-- for (addr = start; addr < end; addr += 0x200)
-+ for (addr = start; addr < end; addr += 0x200) {
- cache16_unroll32(addr|ws,Index_Writeback_Inv_D);
-+ }
- }
-
- static inline void blast_dcache16_page(unsigned long page)
-@@ -173,8 +257,9 @@ static inline void blast_dcache16_page_i
- unsigned long ws, addr;
-
- for (ws = 0; ws < ws_end; ws += ws_inc)
-- for (addr = start; addr < end; addr += 0x200)
-+ for (addr = start; addr < end; addr += 0x200) {
- cache16_unroll32(addr|ws,Index_Writeback_Inv_D);
-+ }
- }
-
- static inline void blast_icache16(void)
-@@ -196,6 +281,7 @@ static inline void blast_icache16_page(u
- unsigned long start = page;
- unsigned long end = start + PAGE_SIZE;
-
-+ BCM4710_FILL_TLB(start);
- do {
- cache16_unroll32(start,Hit_Invalidate_I);
- start += 0x200;
-@@ -281,6 +367,7 @@ static inline void blast_scache16_page_i
- : "r" (base), \
- "i" (op));
-
-+
- static inline void blast_dcache32(void)
- {
- unsigned long start = KSEG0;
-@@ -291,8 +378,9 @@ static inline void blast_dcache32(void)
- unsigned long ws, addr;
-
- for (ws = 0; ws < ws_end; ws += ws_inc)
-- for (addr = start; addr < end; addr += 0x400)
-+ for (addr = start; addr < end; addr += 0x400) {
- cache32_unroll32(addr|ws,Index_Writeback_Inv_D);
-+ }
- }
-
- static inline void blast_dcache32_page(unsigned long page)
-@@ -316,8 +404,9 @@ static inline void blast_dcache32_page_i
- unsigned long ws, addr;
-
- for (ws = 0; ws < ws_end; ws += ws_inc)
-- for (addr = start; addr < end; addr += 0x400)
-+ for (addr = start; addr < end; addr += 0x400) {
- cache32_unroll32(addr|ws,Index_Writeback_Inv_D);
-+ }
- }
-
- static inline void blast_icache32(void)
-@@ -339,6 +428,7 @@ static inline void blast_icache32_page(u
- unsigned long start = page;
- unsigned long end = start + PAGE_SIZE;
-
-+ BCM4710_FILL_TLB(start);
- do {
- cache32_unroll32(start,Hit_Invalidate_I);
- start += 0x400;
-@@ -443,6 +533,7 @@ static inline void blast_icache64_page(u
- unsigned long start = page;
- unsigned long end = start + PAGE_SIZE;
-
-+ BCM4710_FILL_TLB(start);
- do {
- cache64_unroll32(start,Hit_Invalidate_I);
- start += 0x800;
---- a/include/asm-mips/stackframe.h
-+++ b/include/asm-mips/stackframe.h
-@@ -209,6 +209,20 @@
-
- #endif
-
-+#if defined(CONFIG_BCM4710) || defined(CONFIG_BCM4704)
-+
-+#undef RESTORE_SP_AND_RET
-+#define RESTORE_SP_AND_RET \
-+ lw sp, PT_R29(sp); \
-+ .set mips3; \
-+ nop; \
-+ nop; \
-+ eret; \
-+ .set mips0
-+
-+#endif
-+
-+
- #define RESTORE_SP \
- lw sp, PT_R29(sp); \
-
---- a/mm/memory.c
-+++ b/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))));
-+ flush_icache_page(vma, new_page);
- }
-
- /*
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