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target-sparc: implement UA2005 TSB Pointers 

Signed-off-by: Artyom Tarasenko <atar4qemu@gmail.com>
This commit is contained in:
Artyom Tarasenko 2016-02-09 10:58:49 +01:00
parent 96df2bc99f
commit 15f746cedc
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GPG Key ID: 3360C3F7411A125F
2 changed files with 104 additions and 22 deletions
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2
target/sparc/cpu.h
View File

@ -417,6 +417,8 @@ typedef union {
uint64_t tag_access;
uint64_t virtual_watchpoint;
uint64_t physical_watchpoint;
uint64_t sun4v_ctx_config[2];
uint64_t sun4v_tsb_pointers[4];
};
} SparcV9MMU;
#endif

124
target/sparc/ldst_helper.c
View File

@ -70,11 +70,29 @@
#define QT1 (env->qt1)
#if defined(TARGET_SPARC64) && !defined(CONFIG_USER_ONLY)
/* Calculates TSB pointer value for fault page size 8k or 64k */
static uint64_t ultrasparc_tsb_pointer(uint64_t tsb_register,
static uint64_t ultrasparc_tsb_pointer(CPUSPARCState *env, uint64_t tsb,
uint64_t *tsb_ptr,
uint64_t tag_access_register,
int page_size)
int idx, uint64_t *cfg_ptr)
/* Calculates TSB pointer value for fault page size
* UltraSPARC IIi has fixed sizes (8k or 64k) for the page pointers
* UA2005 holds the page size configuration in mmu_ctx registers */
{
uint64_t tsb_register;
int page_size;
if (cpu_has_hypervisor(env)) {
int tsb_index = 0;
int ctx = tag_access_register & 0x1fffULL;
uint64_t ctx_register = cfg_ptr[ctx ? 1 : 0];
tsb_index = idx;
tsb_index |= ctx ? 2 : 0;
page_size = idx ? ctx_register >> 8 : ctx_register;
page_size &= 7;
tsb_register = tsb_ptr[tsb_index];
} else {
page_size = idx;
tsb_register = tsb;
}
uint64_t tsb_base = tsb_register & ~0x1fffULL;
int tsb_split = (tsb_register & 0x1000ULL) ? 1 : 0;
int tsb_size = tsb_register & 0xf;
@ -87,21 +105,15 @@ static uint64_t ultrasparc_tsb_pointer(uint64_t tsb_register,
uint64_t va = tag_access_va;
/* move va bits to correct position */
if (page_size == 8*1024) {
va >>= 9;
} else if (page_size == 64*1024) {
va >>= 12;
}
va >>= 3 * page_size + 9;
if (tsb_size) {
tsb_base_mask <<= tsb_size;
}
tsb_base_mask <<= tsb_size;
/* calculate tsb_base mask and adjust va if split is in use */
if (tsb_split) {
if (page_size == 8*1024) {
if (idx == 0) {
va &= ~(1ULL << (13 + tsb_size));
} else if (page_size == 64*1024) {
} else {
va |= (1ULL << (13 + tsb_size));
}
tsb_base_mask <<= 1;
@ -1256,16 +1268,20 @@ uint64_t helper_ld_asi(CPUSPARCState *env, target_ulong addr,
{
/* env->immuregs[5] holds I-MMU TSB register value
env->immuregs[6] holds I-MMU Tag Access register value */
ret = ultrasparc_tsb_pointer(env->immu.tsb, env->immu.tag_access,
8*1024);
ret = ultrasparc_tsb_pointer(env, env->immu.tsb,
env->immu.sun4v_tsb_pointers,
env->immu.tag_access,
0, env->immu.sun4v_ctx_config);
break;
}
case ASI_IMMU_TSB_64KB_PTR: /* I-MMU 64k TSB pointer */
{
/* env->immuregs[5] holds I-MMU TSB register value
env->immuregs[6] holds I-MMU Tag Access register value */
ret = ultrasparc_tsb_pointer(env->immu.tsb, env->immu.tag_access,
64*1024);
ret = ultrasparc_tsb_pointer(env, env->immu.tsb,
env->immu.sun4v_tsb_pointers,
env->immu.tag_access,
1, env->immu.sun4v_ctx_config);
break;
}
case ASI_ITLB_DATA_ACCESS: /* I-MMU data access */
@ -1324,16 +1340,20 @@ uint64_t helper_ld_asi(CPUSPARCState *env, target_ulong addr,
{
/* env->dmmuregs[5] holds D-MMU TSB register value
env->dmmuregs[6] holds D-MMU Tag Access register value */
ret = ultrasparc_tsb_pointer(env->dmmu.tsb, env->dmmu.tag_access,
8*1024);
ret = ultrasparc_tsb_pointer(env, env->dmmu.tsb,
env->dmmu.sun4v_tsb_pointers,
env->dmmu.tag_access,
0, env->dmmu.sun4v_ctx_config);
break;
}
case ASI_DMMU_TSB_64KB_PTR: /* D-MMU 64k TSB pointer */
{
/* env->dmmuregs[5] holds D-MMU TSB register value
env->dmmuregs[6] holds D-MMU Tag Access register value */
ret = ultrasparc_tsb_pointer(env->dmmu.tsb, env->dmmu.tag_access,
64*1024);
ret = ultrasparc_tsb_pointer(env, env->dmmu.tsb,
env->dmmu.sun4v_tsb_pointers,
env->dmmu.tag_access,
1, env->dmmu.sun4v_ctx_config);
break;
}
case ASI_DTLB_DATA_ACCESS: /* D-MMU data access */
@ -1471,7 +1491,67 @@ void helper_st_asi(CPUSPARCState *env, target_ulong addr, target_ulong val,
case ASI_TWINX_SL: /* Secondary, twinx, LE */
/* These are always handled inline. */
g_assert_not_reached();
/* these ASIs have different functions on UltraSPARC-IIIi
* and UA2005 CPUs. Use the explicit numbers to avoid confusion
*/
case 0x31:
case 0x32:
case 0x39:
case 0x3a:
if (cpu_has_hypervisor(env)) {
/* UA2005
* ASI_DMMU_CTX_ZERO_TSB_BASE_PS0
* ASI_DMMU_CTX_ZERO_TSB_BASE_PS1
* ASI_DMMU_CTX_NONZERO_TSB_BASE_PS0
* ASI_DMMU_CTX_NONZERO_TSB_BASE_PS1
*/
int idx = ((asi & 2) >> 1) | ((asi & 8) >> 2);
env->dmmu.sun4v_tsb_pointers[idx] = val;
} else {
helper_raise_exception(env, TT_ILL_INSN);
}
break;
case 0x33:
case 0x3b:
if (cpu_has_hypervisor(env)) {
/* UA2005
* ASI_DMMU_CTX_ZERO_CONFIG
* ASI_DMMU_CTX_NONZERO_CONFIG
*/
env->dmmu.sun4v_ctx_config[(asi & 8) >> 3] = val;
} else {
helper_raise_exception(env, TT_ILL_INSN);
}
break;
case 0x35:
case 0x36:
case 0x3d:
case 0x3e:
if (cpu_has_hypervisor(env)) {
/* UA2005
* ASI_IMMU_CTX_ZERO_TSB_BASE_PS0
* ASI_IMMU_CTX_ZERO_TSB_BASE_PS1
* ASI_IMMU_CTX_NONZERO_TSB_BASE_PS0
* ASI_IMMU_CTX_NONZERO_TSB_BASE_PS1
*/
int idx = ((asi & 2) >> 1) | ((asi & 8) >> 2);
env->immu.sun4v_tsb_pointers[idx] = val;
} else {
helper_raise_exception(env, TT_ILL_INSN);
}
break;
case 0x37:
case 0x3f:
if (cpu_has_hypervisor(env)) {
/* UA2005
* ASI_IMMU_CTX_ZERO_CONFIG
* ASI_IMMU_CTX_NONZERO_CONFIG
*/
env->immu.sun4v_ctx_config[(asi & 8) >> 3] = val;
} else {
helper_raise_exception(env, TT_ILL_INSN);
}
break;
case ASI_UPA_CONFIG: /* UPA config */
/* XXX */
return;