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openwrtv3/openwrt/target/linux/linux-2.4/patches/brcm/004-bcm94710_mmu.patch

242 lines
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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 2005-06-01 18:42:44.000000000 +0200
+++ linux.dev/arch/mips/mm/c-r4k.c 2005-06-01 18:49:07.000000000 +0200
@@ -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>
@@ -390,6 +396,11 @@
addr = start & ~(dc_lsize - 1);
aend = (end - 1) & ~(dc_lsize - 1);
+#ifdef CONFIG_BCM4710
+ BCM4710_FILL_TLB(addr);
+ BCM4710_FILL_TLB(aend);
+#endif
+
while (1) {
/* Hit_Writeback_Inv_D */
protected_writeback_dcache_line(addr);
@@ -405,6 +416,10 @@
else {
addr = start & ~(ic_lsize - 1);
aend = (end - 1) & ~(ic_lsize - 1);
+#ifdef CONFIG_BCM4710
+ BCM4710_FILL_TLB(addr);
+ BCM4710_FILL_TLB(aend);
+#endif
while (1) {
/* Hit_Invalidate_I */
protected_flush_icache_line(addr);
@@ -487,6 +502,10 @@
a = addr & ~(sc_lsize - 1);
end = (addr + size - 1) & ~(sc_lsize - 1);
+#ifdef CONFIG_BCM4710
+ BCM4710_FILL_TLB(a);
+ BCM4710_FILL_TLB(end);
+#endif
while (1) {
flush_scache_line(a); /* Hit_Writeback_Inv_SD */
if (a == end)
@@ -509,6 +528,10 @@
R4600_HIT_CACHEOP_WAR_IMPL;
a = addr & ~(dc_lsize - 1);
end = (addr + size - 1) & ~(dc_lsize - 1);
+#ifdef CONFIG_BCM4710
+ BCM4710_FILL_TLB(a);
+ BCM4710_FILL_TLB(end);
+#endif
while (1) {
flush_dcache_line(a); /* Hit_Writeback_Inv_D */
if (a == end)
@@ -537,6 +560,10 @@
a = addr & ~(sc_lsize - 1);
end = (addr + size - 1) & ~(sc_lsize - 1);
+#ifdef CONFIG_BCM4710
+ BCM4710_FILL_TLB(a);
+ BCM4710_FILL_TLB(end);
+#endif
while (1) {
flush_scache_line(a); /* Hit_Writeback_Inv_SD */
if (a == end)
@@ -576,6 +603,10 @@
unsigned long ic_lsize = current_cpu_data.icache.linesz;
unsigned long dc_lsize = current_cpu_data.dcache.linesz;
+#ifdef CONFIG_BCM4710
+ BCM4710_PROTECTED_FILL_TLB(addr);
+ BCM4710_PROTECTED_FILL_TLB(addr + 4);
+#endif
R4600_HIT_CACHEOP_WAR_IMPL;
protected_writeback_dcache_line(addr & ~(dc_lsize - 1));
protected_flush_icache_line(addr & ~(ic_lsize - 1));
diff -urN linux.old/include/asm-mips/r4kcache.h linux.dev/include/asm-mips/r4kcache.h
--- linux.old/include/asm-mips/r4kcache.h 2005-06-01 18:42:43.000000000 +0200
+++ linux.dev/include/asm-mips/r4kcache.h 2005-06-01 19:07:11.000000000 +0200
@@ -15,6 +15,25 @@
#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)); })
+
+#define cache_op(op,addr) \
+ BCM4710_DUMMY_RREG(); \
+ __asm__ __volatile__( \
+ " .set noreorder \n" \
+ " .set mips3\n\t \n" \
+ " cache %0, %1 \n" \
+ " .set mips0 \n" \
+ " .set reorder" \
+ : \
+ : "i" (op), "m" (*(unsigned char *)(addr)))
+
+#else
+
#define cache_op(op,addr) \
__asm__ __volatile__( \
" .set noreorder \n" \
@@ -24,6 +43,8 @@
" .set reorder" \
: \
: "i" (op), "m" (*(unsigned char *)(addr)))
+#endif
+
static inline void flush_icache_line_indexed(unsigned long addr)
{
@@ -32,6 +53,9 @@
static inline void flush_dcache_line_indexed(unsigned long addr)
{
+#ifdef CONFIG_BCM4710
+ BCM4710_DUMMY_RREG();
+#endif
cache_op(Index_Writeback_Inv_D, addr);
}
@@ -47,6 +71,10 @@
static inline void flush_dcache_line(unsigned long addr)
{
+
+#ifdef CONFIG_BCM4710
+ BCM4710_DUMMY_RREG();
+#endif
cache_op(Hit_Writeback_Inv_D, addr);
}
@@ -91,6 +119,9 @@
*/
static inline void protected_writeback_dcache_line(unsigned long addr)
{
+#ifdef CONFIG_BCM4710
+ BCM4710_DUMMY_RREG();
+#endif
__asm__ __volatile__(
".set noreorder\n\t"
".set mips3\n"
@@ -148,8 +179,12 @@
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) {
+#ifdef CONFIG_BCM4710
+ BCM4710_DUMMY_RREG();
+#endif
cache16_unroll32(addr|ws,Index_Writeback_Inv_D);
+ }
}
static inline void blast_dcache16_page(unsigned long page)
@@ -158,6 +193,9 @@
unsigned long end = start + PAGE_SIZE;
do {
+#ifdef CONFIG_BCM4710
+ BCM4710_DUMMY_RREG();
+#endif
cache16_unroll32(start,Hit_Writeback_Inv_D);
start += 0x200;
} while (start < end);
@@ -173,8 +211,12 @@
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) {
+#ifdef CONFIG_BCM4710
+ BCM4710_DUMMY_RREG();
+#endif
cache16_unroll32(addr|ws,Index_Writeback_Inv_D);
+ }
}
static inline void blast_icache16(void)
@@ -196,7 +238,13 @@
unsigned long start = page;
unsigned long end = start + PAGE_SIZE;
+#ifdef CONFIG_BCM4710
+ BCM4710_FILL_TLB(start);
+#endif
do {
+#ifdef CONFIG_BCM4710
+ BCM4710_DUMMY_RREG();
+#endif
cache16_unroll32(start,Hit_Invalidate_I);
start += 0x200;
} while (start < end);
@@ -291,8 +339,12 @@
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) {
+#ifdef CONFIG_BCM4710
+ BCM4710_DUMMY_RREG();
+#endif
cache32_unroll32(addr|ws,Index_Writeback_Inv_D);
+ }
}
static inline void blast_dcache32_page(unsigned long page)
@@ -300,7 +352,13 @@
unsigned long start = page;
unsigned long end = start + PAGE_SIZE;
+#ifdef CONFIG_BCM4710
+ __asm__ __volatile__("nop;nop;nop;nop");
+#endif
do {
+#ifdef CONFIG_BCM4710
+ BCM4710_DUMMY_RREG();
+#endif
cache32_unroll32(start,Hit_Writeback_Inv_D);
start += 0x400;
} while (start < end);
@@ -339,6 +397,9 @@
unsigned long start = page;
unsigned long end = start + PAGE_SIZE;
+#ifdef CONFIG_BCM4710
+ BCM4710_FILL_TLB(start);
+#endif
do {
cache32_unroll32(start,Hit_Invalidate_I);
start += 0x400;
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