#include <asm/bcache.h>
#include <asm/bootinfo.h>
+#include <asm/cache.h>
#include <asm/cacheops.h>
#include <asm/cpu.h>
#include <asm/cpu-features.h>
#include <asm/system.h>
#include <asm/mmu_context.h>
#include <asm/war.h>
+#include <asm/cacheflush.h> /* for run_uncached() */
-static unsigned long icache_size, dcache_size, scache_size;
+/*
+ * Must die.
+ */
+static unsigned long icache_size __read_mostly;
+static unsigned long dcache_size __read_mostly;
+static unsigned long scache_size __read_mostly;
/*
* Dummy cache handling routines for machines without boardcaches
struct bcache_ops *bcops = &no_sc_ops;
-#define cpu_is_r4600_v1_x() ((read_c0_prid() & 0xfffffff0) == 0x2010)
-#define cpu_is_r4600_v2_x() ((read_c0_prid() & 0xfffffff0) == 0x2020)
+#define cpu_is_r4600_v1_x() ((read_c0_prid() & 0xfffffff0) == 0x00002010)
+#define cpu_is_r4600_v2_x() ((read_c0_prid() & 0xfffffff0) == 0x00002020)
#define R4600_HIT_CACHEOP_WAR_IMPL \
do { \
CACHE32_UNROLL32_ALIGN2;
/* I'm in even chunk. blast odd chunks */
- for (ws = 0; ws < ws_end; ws += ws_inc)
- for (addr = start + 0x400; addr < end; addr += 0x400 * 2)
+ for (ws = 0; ws < ws_end; ws += ws_inc)
+ for (addr = start + 0x400; addr < end; addr += 0x400 * 2)
cache32_unroll32(addr|ws,Index_Invalidate_I);
CACHE32_UNROLL32_ALIGN;
/* I'm in odd chunk. blast even chunks */
- for (ws = 0; ws < ws_end; ws += ws_inc)
- for (addr = start; addr < end; addr += 0x400 * 2)
+ for (ws = 0; ws < ws_end; ws += ws_inc)
+ for (addr = start; addr < end; addr += 0x400 * 2)
cache32_unroll32(addr|ws,Index_Invalidate_I);
}
static inline void tx49_blast_icache32_page_indexed(unsigned long page)
{
- unsigned long start = 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 <<
CACHE32_UNROLL32_ALIGN2;
/* I'm in even chunk. blast odd chunks */
- for (ws = 0; ws < ws_end; ws += ws_inc)
- for (addr = start + 0x400; addr < end; addr += 0x400 * 2)
+ for (ws = 0; ws < ws_end; ws += ws_inc)
+ for (addr = start + 0x400; addr < end; addr += 0x400 * 2)
cache32_unroll32(addr|ws,Index_Invalidate_I);
CACHE32_UNROLL32_ALIGN;
/* I'm in odd chunk. blast even chunks */
- for (ws = 0; ws < ws_end; ws += ws_inc)
- for (addr = start; addr < end; addr += 0x400 * 2)
+ for (ws = 0; ws < ws_end; ws += ws_inc)
+ for (addr = start; addr < end; addr += 0x400 * 2)
cache32_unroll32(addr|ws,Index_Invalidate_I);
}
if (ic_lsize == 16)
r4k_blast_icache_page_indexed = blast_icache16_page_indexed;
else if (ic_lsize == 32) {
- if (TX49XX_ICACHE_INDEX_INV_WAR)
- r4k_blast_icache_page_indexed =
- tx49_blast_icache32_page_indexed;
- else if (R4600_V1_INDEX_ICACHEOP_WAR && cpu_is_r4600_v1_x())
+ if (R4600_V1_INDEX_ICACHEOP_WAR && cpu_is_r4600_v1_x())
r4k_blast_icache_page_indexed =
blast_icache32_r4600_v1_page_indexed;
+ else if (TX49XX_ICACHE_INDEX_INV_WAR)
+ r4k_blast_icache_page_indexed =
+ tx49_blast_icache32_page_indexed;
else
r4k_blast_icache_page_indexed =
blast_icache32_page_indexed;
{
unsigned long sc_lsize = cpu_scache_line_size();
- if (sc_lsize == 16)
+ if (scache_size == 0)
+ r4k_blast_scache_page = (void *)no_sc_noop;
+ else if (sc_lsize == 16)
r4k_blast_scache_page = blast_scache16_page;
else if (sc_lsize == 32)
r4k_blast_scache_page = blast_scache32_page;
r4k_blast_scache_page = blast_scache128_page;
}
+static void (* r4k_blast_scache_page_indexed)(unsigned long addr);
+
+static inline void r4k_blast_scache_page_indexed_setup(void)
+{
+ unsigned long sc_lsize = cpu_scache_line_size();
+
+ if (scache_size == 0)
+ r4k_blast_scache_page_indexed = (void *)no_sc_noop;
+ else if (sc_lsize == 16)
+ r4k_blast_scache_page_indexed = blast_scache16_page_indexed;
+ else if (sc_lsize == 32)
+ r4k_blast_scache_page_indexed = blast_scache32_page_indexed;
+ else if (sc_lsize == 64)
+ r4k_blast_scache_page_indexed = blast_scache64_page_indexed;
+ else if (sc_lsize == 128)
+ r4k_blast_scache_page_indexed = blast_scache128_page_indexed;
+}
+
static void (* r4k_blast_scache)(void);
static inline void r4k_blast_scache_setup(void)
{
unsigned long sc_lsize = cpu_scache_line_size();
- if (sc_lsize == 16)
+ if (scache_size == 0)
+ r4k_blast_scache = (void *)no_sc_noop;
+ else if (sc_lsize == 16)
r4k_blast_scache = blast_scache16;
else if (sc_lsize == 32)
r4k_blast_scache = blast_scache32;
{
struct mm_struct *mm = args;
- if (!cpu_has_dc_aliases)
- return;
-
if (!cpu_context(smp_processor_id(), mm))
return;
static void r4k_flush_cache_mm(struct mm_struct *mm)
{
+ if (!cpu_has_dc_aliases)
+ return;
+
on_each_cpu(local_r4k_flush_cache_mm, mm, 1, 1);
}
struct flush_cache_page_args {
struct vm_area_struct *vma;
- unsigned long page;
+ unsigned long addr;
+ unsigned long pfn;
};
static inline void local_r4k_flush_cache_page(void *args)
{
struct flush_cache_page_args *fcp_args = args;
struct vm_area_struct *vma = fcp_args->vma;
- unsigned long page = fcp_args->page;
+ unsigned long addr = fcp_args->addr;
+ unsigned long paddr = fcp_args->pfn << PAGE_SHIFT;
int exec = vma->vm_flags & VM_EXEC;
struct mm_struct *mm = vma->vm_mm;
pgd_t *pgdp;
+ pud_t *pudp;
pmd_t *pmdp;
pte_t *ptep;
if (cpu_context(smp_processor_id(), mm) == 0)
return;
- page &= PAGE_MASK;
- pgdp = pgd_offset(mm, page);
- pmdp = pmd_offset(pgdp, page);
- ptep = pte_offset(pmdp, page);
+ addr &= PAGE_MASK;
+ pgdp = pgd_offset(mm, addr);
+ pudp = pud_offset(pgdp, addr);
+ pmdp = pmd_offset(pudp, addr);
+ ptep = pte_offset(pmdp, addr);
/*
* If the page isn't marked valid, the page cannot possibly be
* in that case, which doesn't overly flush the cache too much.
*/
if ((mm == current->active_mm) && (pte_val(*ptep) & _PAGE_VALID)) {
- if (cpu_has_dc_aliases || (exec && !cpu_has_ic_fills_f_dc))
- r4k_blast_dcache_page(page);
+ if (cpu_has_dc_aliases || (exec && !cpu_has_ic_fills_f_dc)) {
+ r4k_blast_dcache_page(addr);
+ if (exec && !cpu_icache_snoops_remote_store)
+ r4k_blast_scache_page(addr);
+ }
if (exec)
- r4k_blast_icache_page(page);
+ r4k_blast_icache_page(addr);
return;
}
* Do indexed flush, too much work to get the (possible) TLB refills
* to work correctly.
*/
- page = INDEX_BASE + (page & (dcache_size - 1));
- if (cpu_has_dc_aliases || (exec && !cpu_has_ic_fills_f_dc))
- r4k_blast_dcache_page_indexed(page);
+ if (cpu_has_dc_aliases || (exec && !cpu_has_ic_fills_f_dc)) {
+ r4k_blast_dcache_page_indexed(cpu_has_pindexed_dcache ?
+ paddr : addr);
+ if (exec && !cpu_icache_snoops_remote_store) {
+ r4k_blast_scache_page_indexed(paddr);
+ }
+ }
if (exec) {
if (cpu_has_vtag_icache) {
int cpu = smp_processor_id();
- if (cpu_context(cpu, vma->vm_mm) != 0)
- drop_mmu_context(vma->vm_mm, cpu);
+ if (cpu_context(cpu, mm) != 0)
+ drop_mmu_context(mm, cpu);
} else
- r4k_blast_icache_page_indexed(page);
+ r4k_blast_icache_page_indexed(addr);
}
}
static void r4k_flush_cache_page(struct vm_area_struct *vma,
- unsigned long page)
+ unsigned long addr, unsigned long pfn)
{
struct flush_cache_page_args args;
args.vma = vma;
- args.page = page;
+ args.addr = addr;
+ args.pfn = pfn;
on_each_cpu(local_r4k_flush_cache_page, &args, 1, 1);
}
static inline void local_r4k_flush_icache_range(void *args)
{
struct flush_icache_range_args *fir_args = args;
- unsigned long dc_lsize = current_cpu_data.dcache.linesz;
- unsigned long ic_lsize = current_cpu_data.icache.linesz;
unsigned long start = fir_args->start;
unsigned long end = fir_args->end;
- unsigned long addr, aend;
if (!cpu_has_ic_fills_f_dc) {
- if (end - start > dcache_size)
+ if (end - start > dcache_size) {
r4k_blast_dcache();
- else {
- addr = start & ~(dc_lsize - 1);
- aend = (end - 1) & ~(dc_lsize - 1);
-
- while (1) {
- /* Hit_Writeback_Inv_D */
- protected_writeback_dcache_line(addr);
- if (addr == aend)
- break;
- addr += dc_lsize;
- }
+ } else {
+ R4600_HIT_CACHEOP_WAR_IMPL;
+ protected_blast_dcache_range(start, end);
+ }
+
+ if (!cpu_icache_snoops_remote_store && scache_size) {
+ if (end - start > scache_size)
+ r4k_blast_scache();
+ else
+ protected_blast_scache_range(start, end);
}
}
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);
- if (addr == aend)
- break;
- addr += ic_lsize;
- }
- }
+ else
+ protected_blast_icache_range(start, end);
}
static void r4k_flush_icache_range(unsigned long start, unsigned long end)
args.end = end;
on_each_cpu(local_r4k_flush_icache_range, &args, 1, 1);
+ instruction_hazard();
}
/*
if (!cpu_has_ic_fills_f_dc) {
unsigned long addr = (unsigned long) page_address(page);
r4k_blast_dcache_page(addr);
+ if (!cpu_icache_snoops_remote_store)
+ r4k_blast_scache_page(addr);
ClearPageDcacheDirty(page);
}
static void r4k_dma_cache_wback_inv(unsigned long addr, unsigned long size)
{
- unsigned long end, a;
-
/* Catch bad driver code */
BUG_ON(size == 0);
if (cpu_has_subset_pcaches) {
- unsigned long sc_lsize = current_cpu_data.scache.linesz;
-
- if (size >= scache_size) {
+ if (size >= scache_size)
r4k_blast_scache();
- return;
- }
-
- a = addr & ~(sc_lsize - 1);
- end = (addr + size - 1) & ~(sc_lsize - 1);
- while (1) {
- flush_scache_line(a); /* Hit_Writeback_Inv_SD */
- if (a == end)
- break;
- a += sc_lsize;
- }
+ else
+ blast_scache_range(addr, addr + size);
return;
}
if (size >= dcache_size) {
r4k_blast_dcache();
} else {
- unsigned long dc_lsize = current_cpu_data.dcache.linesz;
-
R4600_HIT_CACHEOP_WAR_IMPL;
- a = addr & ~(dc_lsize - 1);
- end = (addr + size - 1) & ~(dc_lsize - 1);
- while (1) {
- flush_dcache_line(a); /* Hit_Writeback_Inv_D */
- if (a == end)
- break;
- a += dc_lsize;
- }
+ blast_dcache_range(addr, addr + size);
}
bc_wback_inv(addr, size);
static void r4k_dma_cache_inv(unsigned long addr, unsigned long size)
{
- unsigned long end, a;
-
/* Catch bad driver code */
BUG_ON(size == 0);
if (cpu_has_subset_pcaches) {
- unsigned long sc_lsize = current_cpu_data.scache.linesz;
-
- if (size >= scache_size) {
+ if (size >= scache_size)
r4k_blast_scache();
- return;
- }
-
- a = addr & ~(sc_lsize - 1);
- end = (addr + size - 1) & ~(sc_lsize - 1);
- while (1) {
- flush_scache_line(a); /* Hit_Writeback_Inv_SD */
- if (a == end)
- break;
- a += sc_lsize;
- }
+ else
+ blast_scache_range(addr, addr + size);
return;
}
if (size >= dcache_size) {
r4k_blast_dcache();
} else {
- unsigned long dc_lsize = current_cpu_data.dcache.linesz;
-
R4600_HIT_CACHEOP_WAR_IMPL;
- a = addr & ~(dc_lsize - 1);
- end = (addr + size - 1) & ~(dc_lsize - 1);
- while (1) {
- flush_dcache_line(a); /* Hit_Writeback_Inv_D */
- if (a == end)
- break;
- a += dc_lsize;
- }
+ blast_dcache_range(addr, addr + size);
}
bc_inv(addr, size);
*/
static void local_r4k_flush_cache_sigtramp(void * arg)
{
- unsigned long ic_lsize = current_cpu_data.icache.linesz;
- unsigned long dc_lsize = current_cpu_data.dcache.linesz;
+ unsigned long ic_lsize = cpu_icache_line_size();
+ unsigned long dc_lsize = cpu_dcache_line_size();
+ unsigned long sc_lsize = cpu_scache_line_size();
unsigned long addr = (unsigned long) arg;
R4600_HIT_CACHEOP_WAR_IMPL;
protected_writeback_dcache_line(addr & ~(dc_lsize - 1));
+ if (!cpu_icache_snoops_remote_store && scache_size)
+ protected_writeback_scache_line(addr & ~(sc_lsize - 1));
protected_flush_icache_line(addr & ~(ic_lsize - 1));
if (MIPS4K_ICACHE_REFILL_WAR) {
__asm__ __volatile__ (
".set push\n\t"
".set noat\n\t"
".set mips3\n\t"
-#ifdef CONFIG_MIPS32
+#ifdef CONFIG_32BIT
"la $at,1f\n\t"
#endif
-#ifdef CONFIG_MIPS64
+#ifdef CONFIG_64BIT
"dla $at,1f\n\t"
#endif
"cache %0,($at)\n\t"
for (addr = INDEX_BASE; addr <= INDEX_BASE + 4096; addr += ic_lsize) {
__asm__ __volatile__ (
+ ".set push\n\t"
".set noreorder\n\t"
".set mips3\n\t"
"cache\t%1, 0(%0)\n\t"
"cache\t%1, 0x1000(%0)\n\t"
"cache\t%1, 0x2000(%0)\n\t"
"cache\t%1, 0x3000(%0)\n\t"
- ".set\tmips0\n\t"
- ".set\treorder\n\t"
+ ".set pop\n"
:
: "r" (addr), "i" (Index_Store_Tag_I), "i" (Fill));
}
}
-static char *way_string[] = { NULL, "direct mapped", "2-way", "3-way", "4-way",
- "5-way", "6-way", "7-way", "8-way"
+static char *way_string[] __initdata = { NULL, "direct mapped", "2-way",
+ "3-way", "4-way", "5-way", "6-way", "7-way", "8-way"
};
static void __init probe_pcache(void)
* normally they'd suffer from aliases but magic in the hardware deals
* with that for us so we don't need to take care ourselves.
*/
- if (c->cputype != CPU_R10000 && c->cputype != CPU_R12000)
- if (c->dcache.waysize > PAGE_SIZE)
- c->dcache.flags |= MIPS_CACHE_ALIASES;
+ switch (c->cputype) {
+ case CPU_20KC:
+ case CPU_25KF:
+ c->dcache.flags |= MIPS_CACHE_PINDEX;
+ case CPU_R10000:
+ case CPU_R12000:
+ case CPU_SB1:
+ break;
+ case CPU_24K:
+ if (!(read_c0_config7() & (1 << 16)))
+ default:
+ if (c->dcache.waysize > PAGE_SIZE)
+ c->dcache.flags |= MIPS_CACHE_ALIASES;
+ }
switch (c->cputype) {
case CPU_20KC:
c->icache.flags |= MIPS_CACHE_VTAG;
break;
+ case CPU_AU1000:
case CPU_AU1500:
+ case CPU_AU1100:
+ case CPU_AU1550:
+ case CPU_AU1200:
c->icache.flags |= MIPS_CACHE_IC_F_DC;
break;
}
return 1;
}
-typedef int (*probe_func_t)(unsigned long);
extern int r5k_sc_init(void);
extern int rm7k_sc_init(void);
{
struct cpuinfo_mips *c = ¤t_cpu_data;
unsigned int config = read_c0_config();
- probe_func_t probe_scache_kseg1;
int sc_present = 0;
/*
case CPU_R4000MC:
case CPU_R4400SC:
case CPU_R4400MC:
- probe_scache_kseg1 = (probe_func_t) (CKSEG1ADDR(&probe_scache));
- sc_present = probe_scache_kseg1(config);
+ sc_present = run_uncached(probe_scache);
if (sc_present)
c->options |= MIPS_CPU_CACHE_CDEX_S;
break;
if (!sc_present)
return;
- if ((c->isa_level == MIPS_CPU_ISA_M32 ||
- c->isa_level == MIPS_CPU_ISA_M64) &&
+ if ((c->isa_level == MIPS_CPU_ISA_M32R1 ||
+ c->isa_level == MIPS_CPU_ISA_M64R1) &&
!(c->scache.flags & MIPS_CACHE_NOT_PRESENT))
panic("Dunno how to handle MIPS32 / MIPS64 second level cache");
}
}
-void __init ld_mmu_r4xx0(void)
+void __init r4k_cache_init(void)
{
extern void build_clear_page(void);
extern void build_copy_page(void);
struct cpuinfo_mips *c = ¤t_cpu_data;
/* Default cache error handler for R4000 and R5000 family */
- memcpy((void *)(CAC_BASE + 0x100), &except_vec2_generic, 0x80);
- memcpy((void *)(UNCAC_BASE + 0x100), &except_vec2_generic, 0x80);
+ set_uncached_handler (0x100, &except_vec2_generic, 0x80);
probe_pcache();
setup_scache();
- if (c->dcache.sets * c->dcache.ways > PAGE_SIZE)
- c->dcache.flags |= MIPS_CACHE_ALIASES;
-
r4k_blast_dcache_page_setup();
r4k_blast_dcache_page_indexed_setup();
r4k_blast_dcache_setup();
r4k_blast_icache_page_indexed_setup();
r4k_blast_icache_setup();
r4k_blast_scache_page_setup();
+ r4k_blast_scache_page_indexed_setup();
r4k_blast_scache_setup();
/*
_dma_cache_inv = r4k_dma_cache_inv;
#endif
- __flush_cache_all();
- coherency_setup();
-
build_clear_page();
build_copy_page();
+ local_r4k___flush_cache_all(NULL);
+ coherency_setup();
}
git://git.onelab.eu / linux-2.6.git / blobdiff