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Implement PowerPC 64 SLB invalidation helpers.

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3391 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
j_mayer 2007-10-14 09:06:19 +00:00
parent a01d8cadad
commit eacc324914
1 changed files with 63 additions and 19 deletions
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82
target-ppc/helper.c
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@ -601,6 +601,16 @@ static always_inline int find_pte (CPUState *env, mmu_ctx_t *ctx,
}
#if defined(TARGET_PPC64)
static inline int slb_is_valid (uint64_t slb64)
{
return slb64 & 0x0000000008000000ULL ? 1 : 0;
}
static inline void slb_invalidate (uint64_t *slb64)
{
*slb64 &= ~0x0000000008000000ULL;
}
static int slb_lookup (CPUPPCState *env, target_ulong eaddr,
target_ulong *vsid, target_ulong *page_mask, int *attr)
{
@ -609,7 +619,6 @@ static int slb_lookup (CPUPPCState *env, target_ulong eaddr,
uint64_t tmp64;
uint32_t tmp;
int n, ret;
int slb_nr;
ret = -5;
sr_base = env->spr[SPR_ASR];
@ -620,8 +629,7 @@ static int slb_lookup (CPUPPCState *env, target_ulong eaddr,
}
#endif
mask = 0x0000000000000000ULL; /* Avoid gcc warning */
slb_nr = env->slb_nr;
for (n = 0; n < slb_nr; n++) {
for (n = 0; n < env->slb_nr; n++) {
tmp64 = ldq_phys(sr_base);
tmp = ldl_phys(sr_base + 8);
#if defined(DEBUG_SLB)
@ -630,7 +638,7 @@ static int slb_lookup (CPUPPCState *env, target_ulong eaddr,
PRIx32 "\n", __func__, n, sr_base, tmp64, tmp);
}
#endif
if (tmp64 & 0x0000000008000000ULL) {
if (slb_is_valid(tmp64)) {
/* SLB entry is valid */
switch (tmp64 & 0x0000000006000000ULL) {
case 0x0000000000000000ULL:
@ -651,7 +659,7 @@ static int slb_lookup (CPUPPCState *env, target_ulong eaddr,
*vsid = ((tmp64 << 24) | (tmp >> 8)) & 0x0003FFFFFFFFFFFFULL;
*page_mask = ~mask;
*attr = tmp & 0xFF;
ret = 0;
ret = n;
break;
}
}
@ -661,6 +669,56 @@ static int slb_lookup (CPUPPCState *env, target_ulong eaddr,
return ret;
}
void ppc_slb_invalidate_all (CPUPPCState *env)
{
target_phys_addr_t sr_base;
uint64_t tmp64;
int n, do_invalidate;
do_invalidate = 0;
sr_base = env->spr[SPR_ASR];
for (n = 0; n < env->slb_nr; n++) {
tmp64 = ldq_phys(sr_base);
if (slb_is_valid(tmp64)) {
slb_invalidate(&tmp64);
stq_phys(sr_base, tmp64);
/* XXX: given the fact that segment size is 256 MB or 1TB,
* and we still don't have a tlb_flush_mask(env, n, mask)
* in Qemu, we just invalidate all TLBs
*/
do_invalidate = 1;
}
sr_base += 12;
}
if (do_invalidate)
tlb_flush(env, 1);
}
void ppc_slb_invalidate_one (CPUPPCState *env, uint64_t T0)
{
target_phys_addr_t sr_base;
target_ulong vsid, page_mask;
uint64_t tmp64;
int attr;
int n;
n = slb_lookup(env, T0, &vsid, &page_mask, &attr);
if (n >= 0) {
sr_base = env->spr[SPR_ASR];
sr_base += 12 * n;
tmp64 = ldq_phys(sr_base);
if (slb_is_valid(tmp64)) {
slb_invalidate(&tmp64);
stq_phys(sr_base, tmp64);
/* XXX: given the fact that segment size is 256 MB or 1TB,
* and we still don't have a tlb_flush_mask(env, n, mask)
* in Qemu, we just invalidate all TLBs
*/
tlb_flush(env, 1);
}
}
}
target_ulong ppc_load_slb (CPUPPCState *env, int slb_nr)
{
target_phys_addr_t sr_base;
@ -1828,20 +1886,6 @@ void ppc_tlb_invalidate_one (CPUPPCState *env, target_ulong addr)
#endif
}
#if defined(TARGET_PPC64)
void ppc_slb_invalidate_all (CPUPPCState *env)
{
/* XXX: TODO */
tlb_flush(env, 1);
}
void ppc_slb_invalidate_one (CPUPPCState *env, uint64_t T0)
{
/* XXX: TODO */
tlb_flush(env, 1);
}
#endif
/*****************************************************************************/
/* Special registers manipulation */
#if defined(TARGET_PPC64)