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target/ppc: Remove type argument from mmubooke206_check_tlb

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We can now use MMU_INST_FETCH from access_type for this.
Unify the I/D code paths, making use of prot_for_access_type.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210518201146.794854-15-richard.henderson@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Richard Henderson 2021-05-18 15:11:36 -05:00 committed by David Gibson
parent 40079604ae
commit 5507d62609
1 changed files with 17 additions and 33 deletions
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50
target/ppc/mmu_helper.c
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@ -944,10 +944,8 @@ static bool mmubooke206_get_as(CPUPPCState *env,
static int mmubooke206_check_tlb(CPUPPCState *env, ppcmas_tlb_t *tlb,
hwaddr *raddr, int *prot,
target_ulong address,
MMUAccessType access_type,
int type, int mmu_idx)
MMUAccessType access_type, int mmu_idx)
{
int ret;
int prot2 = 0;
uint32_t epid;
bool as, pr;
@ -1004,39 +1002,25 @@ found_tlb:
}
/* Check the address space and permissions */
if (type == ACCESS_CODE) {
if (access_type == MMU_INST_FETCH) {
/* There is no way to fetch code using epid load */
assert(!use_epid);
if (msr_ir != ((tlb->mas1 & MAS1_TS) >> MAS1_TS_SHIFT)) {
LOG_SWTLB("%s: AS doesn't match\n", __func__);
return -1;
}
*prot = prot2;
if (prot2 & PAGE_EXEC) {
LOG_SWTLB("%s: good TLB!\n", __func__);
return 0;
}
LOG_SWTLB("%s: no PAGE_EXEC: %x\n", __func__, prot2);
ret = -3;
} else {
if (as != ((tlb->mas1 & MAS1_TS) >> MAS1_TS_SHIFT)) {
LOG_SWTLB("%s: AS doesn't match\n", __func__);
return -1;
}
*prot = prot2;
if (prot2 & (access_type == MMU_DATA_LOAD ? PAGE_READ : PAGE_WRITE)) {
LOG_SWTLB("%s: found TLB!\n", __func__);
return 0;
}
LOG_SWTLB("%s: PAGE_READ/WRITE doesn't match: %x\n", __func__, prot2);
ret = -2;
as = msr_ir;
}
return ret;
if (as != ((tlb->mas1 & MAS1_TS) >> MAS1_TS_SHIFT)) {
LOG_SWTLB("%s: AS doesn't match\n", __func__);
return -1;
}
*prot = prot2;
if (prot2 & prot_for_access_type(access_type)) {
LOG_SWTLB("%s: good TLB!\n", __func__);
return 0;
}
LOG_SWTLB("%s: no prot match: %x\n", __func__, prot2);
return access_type == MMU_INST_FETCH ? -3 : -2;
}
static int mmubooke206_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
@ -1060,7 +1044,7 @@ static int mmubooke206_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
continue;
}
ret = mmubooke206_check_tlb(env, tlb, &raddr, &ctx->prot, address,
access_type, type, mmu_idx);
access_type, mmu_idx);
if (ret != -1) {
goto found_tlb;
}