You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
391 lines
14 KiB
391 lines
14 KiB
--- a/arch/mips/include/asm/r4kcache.h
|
|
+++ b/arch/mips/include/asm/r4kcache.h
|
|
@@ -25,6 +25,20 @@
|
|
extern void (*r4k_blast_dcache)(void);
|
|
extern void (*r4k_blast_icache)(void);
|
|
|
|
+#ifdef CONFIG_BCM47XX
|
|
+#include <asm/paccess.h>
|
|
+#include <linux/ssb/ssb.h>
|
|
+#define BCM4710_DUMMY_RREG() ((void) *((u8 *) KSEG1ADDR(SSB_ENUM_BASE)))
|
|
+
|
|
+#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
|
|
+
|
|
/*
|
|
* This macro return a properly sign-extended address suitable as base address
|
|
* for indexed cache operations. Two issues here:
|
|
@@ -98,6 +112,7 @@ static inline void flush_icache_line_ind
|
|
static inline void flush_dcache_line_indexed(unsigned long addr)
|
|
{
|
|
__dflush_prologue
|
|
+ BCM4710_DUMMY_RREG();
|
|
cache_op(Index_Writeback_Inv_D, addr);
|
|
__dflush_epilogue
|
|
}
|
|
@@ -125,6 +140,7 @@ static inline void flush_icache_line(uns
|
|
static inline void flush_dcache_line(unsigned long addr)
|
|
{
|
|
__dflush_prologue
|
|
+ BCM4710_DUMMY_RREG();
|
|
cache_op(Hit_Writeback_Inv_D, addr);
|
|
__dflush_epilogue
|
|
}
|
|
@@ -132,6 +148,7 @@ static inline void flush_dcache_line(uns
|
|
static inline void invalidate_dcache_line(unsigned long addr)
|
|
{
|
|
__dflush_prologue
|
|
+ BCM4710_DUMMY_RREG();
|
|
cache_op(Hit_Invalidate_D, addr);
|
|
__dflush_epilogue
|
|
}
|
|
@@ -187,6 +204,7 @@ static inline void protected_flush_icach
|
|
#ifdef CONFIG_EVA
|
|
protected_cachee_op(Hit_Invalidate_I, addr);
|
|
#else
|
|
+ BCM4710_DUMMY_RREG();
|
|
protected_cache_op(Hit_Invalidate_I, addr);
|
|
#endif
|
|
break;
|
|
@@ -201,6 +219,7 @@ static inline void protected_flush_icach
|
|
*/
|
|
static inline void protected_writeback_dcache_line(unsigned long addr)
|
|
{
|
|
+ BCM4710_DUMMY_RREG();
|
|
#ifdef CONFIG_EVA
|
|
protected_cachee_op(Hit_Writeback_Inv_D, addr);
|
|
#else
|
|
@@ -554,8 +573,51 @@ static inline void invalidate_tcache_pag
|
|
: "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);
|
|
+
|
|
+ do {
|
|
+ BCM4710_DUMMY_RREG();
|
|
+ cache_op(Index_Writeback_Inv_D, start);
|
|
+ start += current_cpu_data.dcache.linesz;
|
|
+ } while(start < end);
|
|
+}
|
|
+
|
|
+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_op(Hit_Writeback_Inv_D, start);
|
|
+ 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_op(Index_Writeback_Inv_D, addr);
|
|
+ }
|
|
+ }
|
|
+}
|
|
+
|
|
/* build blast_xxx, blast_xxx_page, blast_xxx_page_indexed */
|
|
-#define __BUILD_BLAST_CACHE(pfx, desc, indexop, hitop, lsize, extra) \
|
|
+#define __BUILD_BLAST_CACHE(pfx, desc, indexop, hitop, lsize, extra, war) \
|
|
static inline void extra##blast_##pfx##cache##lsize(void) \
|
|
{ \
|
|
unsigned long start = INDEX_BASE; \
|
|
@@ -567,6 +629,7 @@ static inline void extra##blast_##pfx##c
|
|
\
|
|
__##pfx##flush_prologue \
|
|
\
|
|
+ war \
|
|
for (ws = 0; ws < ws_end; ws += ws_inc) \
|
|
for (addr = start; addr < end; addr += lsize * 32) \
|
|
cache##lsize##_unroll32(addr|ws, indexop); \
|
|
@@ -581,6 +644,7 @@ static inline void extra##blast_##pfx##c
|
|
\
|
|
__##pfx##flush_prologue \
|
|
\
|
|
+ war \
|
|
do { \
|
|
cache##lsize##_unroll32(start, hitop); \
|
|
start += lsize * 32; \
|
|
@@ -599,6 +663,8 @@ static inline void extra##blast_##pfx##c
|
|
current_cpu_data.desc.waybit; \
|
|
unsigned long ws, addr; \
|
|
\
|
|
+ war \
|
|
+ \
|
|
__##pfx##flush_prologue \
|
|
\
|
|
for (ws = 0; ws < ws_end; ws += ws_inc) \
|
|
@@ -608,26 +674,26 @@ static inline void extra##blast_##pfx##c
|
|
__##pfx##flush_epilogue \
|
|
}
|
|
|
|
-__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, )
|
|
-__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, )
|
|
-__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I_Loongson2, 32, loongson2_)
|
|
-__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, )
|
|
-__BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 64, )
|
|
-__BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 128, )
|
|
-__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 128, )
|
|
-__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, )
|
|
-__BUILD_BLAST_CACHE(inv_d, dcache, Index_Writeback_Inv_D, Hit_Invalidate_D, 32, )
|
|
-__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, )
|
|
+__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, , BCM4710_FILL_TLB(start);)
|
|
+__BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 16, , )
|
|
+__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, , BCM4710_FILL_TLB(start);)
|
|
+__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I_Loongson2, 32, loongson2_, BCM4710_FILL_TLB(start);)
|
|
+__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, , BCM4710_FILL_TLB(start);)
|
|
+__BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 64, , )
|
|
+__BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 128, , )
|
|
+__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 128, , )
|
|
+__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, , )
|
|
+__BUILD_BLAST_CACHE(inv_d, dcache, Index_Writeback_Inv_D, Hit_Invalidate_D, 32, , )
|
|
+__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, , )
|
|
|
|
#define __BUILD_BLAST_USER_CACHE(pfx, desc, indexop, hitop, lsize) \
|
|
static inline void blast_##pfx##cache##lsize##_user_page(unsigned long page) \
|
|
@@ -656,17 +722,19 @@ __BUILD_BLAST_USER_CACHE(d, dcache, Inde
|
|
__BUILD_BLAST_USER_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 64)
|
|
|
|
/* build blast_xxx_range, protected_blast_xxx_range */
|
|
-#define __BUILD_BLAST_CACHE_RANGE(pfx, desc, hitop, prot, extra) \
|
|
+#define __BUILD_BLAST_CACHE_RANGE(pfx, desc, hitop, prot, extra, war, war2) \
|
|
static inline void prot##extra##blast_##pfx##cache##_range(unsigned long start, \
|
|
unsigned long end) \
|
|
{ \
|
|
unsigned long lsize = cpu_##desc##_line_size(); \
|
|
unsigned long addr = start & ~(lsize - 1); \
|
|
unsigned long aend = (end - 1) & ~(lsize - 1); \
|
|
+ war \
|
|
\
|
|
__##pfx##flush_prologue \
|
|
\
|
|
while (1) { \
|
|
+ war2 \
|
|
prot##cache_op(hitop, addr); \
|
|
if (addr == aend) \
|
|
break; \
|
|
@@ -678,8 +746,8 @@ static inline void prot##extra##blast_##
|
|
|
|
#ifndef CONFIG_EVA
|
|
|
|
-__BUILD_BLAST_CACHE_RANGE(d, dcache, Hit_Writeback_Inv_D, protected_, )
|
|
-__BUILD_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I, protected_, )
|
|
+__BUILD_BLAST_CACHE_RANGE(d, dcache, Hit_Writeback_Inv_D, protected_, , BCM4710_PROTECTED_FILL_TLB(addr); BCM4710_PROTECTED_FILL_TLB(aend);, BCM4710_DUMMY_RREG();)
|
|
+__BUILD_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I, protected_, , , )
|
|
|
|
#else
|
|
|
|
@@ -716,14 +784,14 @@ __BUILD_PROT_BLAST_CACHE_RANGE(d, dcache
|
|
__BUILD_PROT_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I)
|
|
|
|
#endif
|
|
-__BUILD_BLAST_CACHE_RANGE(s, scache, Hit_Writeback_Inv_SD, protected_, )
|
|
+__BUILD_BLAST_CACHE_RANGE(s, scache, Hit_Writeback_Inv_SD, protected_, , , )
|
|
__BUILD_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I_Loongson2, \
|
|
- protected_, loongson2_)
|
|
-__BUILD_BLAST_CACHE_RANGE(d, dcache, Hit_Writeback_Inv_D, , )
|
|
-__BUILD_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I, , )
|
|
-__BUILD_BLAST_CACHE_RANGE(s, scache, Hit_Writeback_Inv_SD, , )
|
|
+ protected_, loongson2_, , )
|
|
+__BUILD_BLAST_CACHE_RANGE(d, dcache, Hit_Writeback_Inv_D, , , BCM4710_FILL_TLB(addr); BCM4710_FILL_TLB(aend);, BCM4710_DUMMY_RREG();)
|
|
+__BUILD_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I, , , , )
|
|
+__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, , )
|
|
+__BUILD_BLAST_CACHE_RANGE(inv_d, dcache, Hit_Invalidate_D, , , , BCM4710_DUMMY_RREG();)
|
|
+__BUILD_BLAST_CACHE_RANGE(inv_s, scache, Hit_Invalidate_SD, , , , )
|
|
|
|
#endif /* _ASM_R4KCACHE_H */
|
|
--- a/arch/mips/include/asm/stackframe.h
|
|
+++ b/arch/mips/include/asm/stackframe.h
|
|
@@ -333,6 +333,10 @@
|
|
.macro RESTORE_SP_AND_RET
|
|
LONG_L sp, PT_R29(sp)
|
|
.set arch=r4000
|
|
+#ifdef CONFIG_BCM47XX
|
|
+ nop
|
|
+ nop
|
|
+#endif
|
|
eret
|
|
.set mips0
|
|
.endm
|
|
--- a/arch/mips/kernel/genex.S
|
|
+++ b/arch/mips/kernel/genex.S
|
|
@@ -32,6 +32,10 @@
|
|
NESTED(except_vec3_generic, 0, sp)
|
|
.set push
|
|
.set noat
|
|
+#ifdef CONFIG_BCM47XX
|
|
+ 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
|
|
@@ -39,6 +39,9 @@
|
|
#include <asm/dma-coherence.h>
|
|
#include <asm/mips-cm.h>
|
|
|
|
+/* For enabling BCM4710 cache workarounds */
|
|
+int bcm4710 = 0;
|
|
+
|
|
/*
|
|
* Special Variant of smp_call_function for use by cache functions:
|
|
*
|
|
@@ -157,6 +160,9 @@ static void r4k_blast_dcache_user_page_s
|
|
{
|
|
unsigned long dc_lsize = cpu_dcache_line_size();
|
|
|
|
+ if (bcm4710)
|
|
+ r4k_blast_dcache_page = blast_dcache_page;
|
|
+ else
|
|
if (dc_lsize == 0)
|
|
r4k_blast_dcache_user_page = (void *)cache_noop;
|
|
else if (dc_lsize == 16)
|
|
@@ -175,6 +181,9 @@ static void r4k_blast_dcache_page_indexe
|
|
{
|
|
unsigned long dc_lsize = cpu_dcache_line_size();
|
|
|
|
+ if (bcm4710)
|
|
+ r4k_blast_dcache_page_indexed = blast_dcache_page_indexed;
|
|
+ else
|
|
if (dc_lsize == 0)
|
|
r4k_blast_dcache_page_indexed = (void *)cache_noop;
|
|
else if (dc_lsize == 16)
|
|
@@ -194,6 +203,9 @@ static void r4k_blast_dcache_setup(void)
|
|
{
|
|
unsigned long dc_lsize = cpu_dcache_line_size();
|
|
|
|
+ if (bcm4710)
|
|
+ r4k_blast_dcache = blast_dcache;
|
|
+ else
|
|
if (dc_lsize == 0)
|
|
r4k_blast_dcache = (void *)cache_noop;
|
|
else if (dc_lsize == 16)
|
|
@@ -793,6 +805,8 @@ static void local_r4k_flush_cache_sigtra
|
|
unsigned long addr = (unsigned long) arg;
|
|
|
|
R4600_HIT_CACHEOP_WAR_IMPL;
|
|
+ BCM4710_PROTECTED_FILL_TLB(addr);
|
|
+ BCM4710_PROTECTED_FILL_TLB(addr + 4);
|
|
if (dc_lsize)
|
|
protected_writeback_dcache_line(addr & ~(dc_lsize - 1));
|
|
if (!cpu_icache_snoops_remote_store && scache_size)
|
|
@@ -1599,6 +1613,17 @@ static void coherency_setup(void)
|
|
* silly idea of putting something else there ...
|
|
*/
|
|
switch (current_cpu_type()) {
|
|
+ case CPU_BMIPS3300:
|
|
+ {
|
|
+ u32 cm;
|
|
+ cm = read_c0_diag();
|
|
+ /* Enable icache */
|
|
+ cm |= (1 << 31);
|
|
+ /* Enable dcache */
|
|
+ cm |= (1 << 30);
|
|
+ write_c0_diag(cm);
|
|
+ }
|
|
+ break;
|
|
case CPU_R4000PC:
|
|
case CPU_R4000SC:
|
|
case CPU_R4000MC:
|
|
@@ -1645,6 +1670,15 @@ void r4k_cache_init(void)
|
|
extern void build_copy_page(void);
|
|
struct cpuinfo_mips *c = ¤t_cpu_data;
|
|
|
|
+ /* Check if special workarounds are required */
|
|
+#ifdef CONFIG_BCM47XX
|
|
+ if (current_cpu_data.cputype == CPU_BMIPS32 && (current_cpu_data.processor_id & 0xff) == 0) {
|
|
+ printk("Enabling BCM4710A0 cache workarounds.\n");
|
|
+ bcm4710 = 1;
|
|
+ } else
|
|
+#endif
|
|
+ bcm4710 = 0;
|
|
+
|
|
probe_pcache();
|
|
setup_scache();
|
|
|
|
@@ -1714,7 +1748,15 @@ void r4k_cache_init(void)
|
|
*/
|
|
local_r4k___flush_cache_all(NULL);
|
|
|
|
+#ifdef CONFIG_BCM47XX
|
|
+ {
|
|
+ static void (*_coherency_setup)(void);
|
|
+ _coherency_setup = (void (*)(void)) KSEG1ADDR(coherency_setup);
|
|
+ _coherency_setup();
|
|
+ }
|
|
+#else
|
|
coherency_setup();
|
|
+#endif
|
|
board_cache_error_setup = r4k_cache_error_setup;
|
|
|
|
/*
|
|
--- a/arch/mips/mm/tlbex.c
|
|
+++ b/arch/mips/mm/tlbex.c
|
|
@@ -1296,6 +1296,9 @@ static void build_r4000_tlb_refill_handl
|
|
/* No need for uasm_i_nop */
|
|
}
|
|
|
|
+#ifdef CONFIG_BCM47XX
|
|
+ uasm_i_nop(&p);
|
|
+#endif
|
|
#ifdef CONFIG_64BIT
|
|
build_get_pmde64(&p, &l, &r, K0, K1); /* get pmd in K1 */
|
|
#else
|
|
@@ -1868,6 +1871,9 @@ build_r4000_tlbchange_handler_head(u32 *
|
|
{
|
|
struct work_registers wr = build_get_work_registers(p);
|
|
|
|
+#ifdef CONFIG_BCM47XX
|
|
+ uasm_i_nop(p);
|
|
+#endif
|
|
#ifdef CONFIG_64BIT
|
|
build_get_pmde64(p, l, r, wr.r1, wr.r2); /* get pmd in ptr */
|
|
#else
|
|
|