haraldwolff/qemu-patch-raspberry4
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sh4: implement missing mmaped TLB write functions

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Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Aurelien Jarno 2011-01-26 02:07:50 +01:00
parent 7f09581610
commit 9f97309a70
3 changed files with 69 additions and 6 deletions
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5
hw/sh7750.c
View file

@ -673,7 +673,7 @@ static void sh7750_mmct_writel(void *opaque, target_phys_addr_t addr,
cpu_sh4_write_mmaped_itlb_addr(s->cpu, addr, mem_value);
break;
case MM_ITLB_DATA:
/* XXXXX */
cpu_sh4_write_mmaped_itlb_data(s->cpu, addr, mem_value);
abort();
break;
case MM_OCACHE_ADDR:
@ -684,8 +684,7 @@ static void sh7750_mmct_writel(void *opaque, target_phys_addr_t addr,
cpu_sh4_write_mmaped_utlb_addr(s->cpu, addr, mem_value);
break;
case MM_UTLB_DATA:
/* XXXXX */
abort();
cpu_sh4_write_mmaped_utlb_data(s->cpu, addr, mem_value);
break;
default:
abort();

8
target-sh4/cpu.h
View file

@ -202,9 +202,13 @@ void sh4_cpu_list(FILE *f, fprintf_function cpu_fprintf);
#if !defined(CONFIG_USER_ONLY)
void cpu_sh4_invalidate_tlb(CPUSH4State *s);
void cpu_sh4_write_mmaped_itlb_addr(CPUSH4State *s, target_phys_addr_t addr,
uint32_t mem_value);
uint32_t mem_value);
void cpu_sh4_write_mmaped_itlb_data(CPUSH4State *s, target_phys_addr_t addr,
uint32_t mem_value);
void cpu_sh4_write_mmaped_utlb_addr(CPUSH4State *s, target_phys_addr_t addr,
uint32_t mem_value);
uint32_t mem_value);
void cpu_sh4_write_mmaped_utlb_data(CPUSH4State *s, target_phys_addr_t addr,
uint32_t mem_value);
#endif
int cpu_sh4_is_cached(CPUSH4State * env, target_ulong addr);

62
target-sh4/helper.c
View file

@ -574,7 +574,7 @@ void cpu_sh4_write_mmaped_itlb_addr(CPUSH4State *s, target_phys_addr_t addr,
uint8_t v = (uint8_t)((mem_value & 0x00000100) >> 8);
uint8_t asid = (uint8_t)(mem_value & 0x000000ff);
int index = (addr & 0x00003f00) >> 8;
int index = (addr & 0x00000300) >> 8;
tlb_t * entry = &s->itlb[index];
if (entry->v) {
/* Overwriting valid entry in itlb. */
@ -586,6 +586,34 @@ void cpu_sh4_write_mmaped_itlb_addr(CPUSH4State *s, target_phys_addr_t addr,
entry->v = v;
}
void cpu_sh4_write_mmaped_itlb_data(CPUSH4State *s, target_phys_addr_t addr,
uint32_t mem_value)
{
int array = (addr & 0x00800000) >> 23;
int index = (addr & 0x00000300) >> 8;
tlb_t * entry = &s->itlb[index];
if (array == 0) {
/* ITLB Data Array 1 */
if (entry->v) {
/* Overwriting valid entry in utlb. */
target_ulong address = entry->vpn << 10;
tlb_flush_page(s, address);
}
entry->ppn = (mem_value & 0x1ffffc00) >> 10;
entry->v = (mem_value & 0x00000100) >> 8;
entry->sz = (mem_value & 0x00000080) >> 6 |
(mem_value & 0x00000010) >> 4;
entry->pr = (mem_value & 0x00000040) >> 5;
entry->c = (mem_value & 0x00000008) >> 3;
entry->sh = (mem_value & 0x00000002) >> 1;
} else {
/* ITLB Data Array 2 */
entry->tc = (mem_value & 0x00000008) >> 3;
entry->sa = (mem_value & 0x00000007);
}
}
void cpu_sh4_write_mmaped_utlb_addr(CPUSH4State *s, target_phys_addr_t addr,
uint32_t mem_value)
{
@ -658,6 +686,38 @@ void cpu_sh4_write_mmaped_utlb_addr(CPUSH4State *s, target_phys_addr_t addr,
}
}
void cpu_sh4_write_mmaped_utlb_data(CPUSH4State *s, target_phys_addr_t addr,
uint32_t mem_value)
{
int array = (addr & 0x00800000) >> 23;
int index = (addr & 0x00003f00) >> 8;
tlb_t * entry = &s->utlb[index];
increment_urc(s); /* per utlb access */
if (array == 0) {
/* UTLB Data Array 1 */
if (entry->v) {
/* Overwriting valid entry in utlb. */
target_ulong address = entry->vpn << 10;
tlb_flush_page(s, address);
}
entry->ppn = (mem_value & 0x1ffffc00) >> 10;
entry->v = (mem_value & 0x00000100) >> 8;
entry->sz = (mem_value & 0x00000080) >> 6 |
(mem_value & 0x00000010) >> 4;
entry->pr = (mem_value & 0x00000060) >> 5;
entry->c = (mem_value & 0x00000008) >> 3;
entry->d = (mem_value & 0x00000004) >> 2;
entry->sh = (mem_value & 0x00000002) >> 1;
entry->wt = (mem_value & 0x00000001);
} else {
/* UTLB Data Array 2 */
entry->tc = (mem_value & 0x00000008) >> 3;
entry->sa = (mem_value & 0x00000007);
}
}
int cpu_sh4_is_cached(CPUSH4State * env, target_ulong addr)
{
int n;