OpenE2K/qemu-e2k
13
4
Fork 0
Code Issues 4 Pull Requests Projects 2 Releases Activity

target/ppc: Split out ppc_jumbo_xlate

Browse Source 
Mirror the interface of ppc_radix64_xlate (mostly), putting all
of the logic for older mmu translation into a single entry point.
For booke, we need to add mmu_idx to the xlate-style interface.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210621125115.67717-8-bruno.larsen@eldorado.org.br>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Richard Henderson 2021-06-21 09:51:12 -03:00 committed by David Gibson
parent 6c3c873c63
commit af44a14236
1 changed files with 97 additions and 84 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

181
target/ppc/mmu_helper.c
View File

@ -1435,48 +1435,6 @@ static int get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
}
#endif
hwaddr ppc_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
{
PowerPCCPU *cpu = POWERPC_CPU(cs);
CPUPPCState *env = &cpu->env;
mmu_ctx_t ctx;
switch (env->mmu_model) {
#if defined(TARGET_PPC64)
case POWERPC_MMU_64B:
case POWERPC_MMU_2_03:
case POWERPC_MMU_2_06:
case POWERPC_MMU_2_07:
return ppc_hash64_get_phys_page_debug(cpu, addr);
case POWERPC_MMU_3_00:
return ppc64_v3_get_phys_page_debug(cpu, addr);
#endif
case POWERPC_MMU_32B:
case POWERPC_MMU_601:
return ppc_hash32_get_phys_page_debug(cpu, addr);
default:
;
}
if (unlikely(get_physical_address(env, &ctx, addr, MMU_DATA_LOAD,
ACCESS_INT) != 0)) {
/*
* Some MMUs have separate TLBs for code and data. If we only
* try an ACCESS_INT, we may not be able to read instructions
* mapped by code TLBs, so we also try a ACCESS_CODE.
*/
if (unlikely(get_physical_address(env, &ctx, addr, MMU_INST_FETCH,
ACCESS_CODE) != 0)) {
return -1;
}
}
return ctx.raddr & TARGET_PAGE_MASK;
}
static void booke206_update_mas_tlb_miss(CPUPPCState *env, target_ulong address,
MMUAccessType access_type, int mmu_idx)
{
@ -1532,30 +1490,38 @@ static void booke206_update_mas_tlb_miss(CPUPPCState *env, target_ulong address,
}
/* Perform address translation */
static int cpu_ppc_handle_mmu_fault(CPUPPCState *env, target_ulong address,
MMUAccessType access_type, int mmu_idx)
/* TODO: Split this by mmu_model. */
static bool ppc_jumbo_xlate(PowerPCCPU *cpu, vaddr eaddr,
MMUAccessType access_type,
hwaddr *raddrp, int *psizep, int *protp,
int mmu_idx, bool guest_visible)
{
CPUState *cs = env_cpu(env);
PowerPCCPU *cpu = POWERPC_CPU(cs);
CPUState *cs = CPU(cpu);
CPUPPCState *env = &cpu->env;
mmu_ctx_t ctx;
int type;
int ret = 0;
int ret;
if (access_type == MMU_INST_FETCH) {
/* code access */
type = ACCESS_CODE;
} else {
} else if (guest_visible) {
/* data access */
type = env->access_type;
} else {
type = ACCESS_INT;
}
ret = get_physical_address_wtlb(env, &ctx, address, access_type,
ret = get_physical_address_wtlb(env, &ctx, eaddr, access_type,
type, mmu_idx);
if (ret == 0) {
tlb_set_page(cs, address & TARGET_PAGE_MASK,
ctx.raddr & TARGET_PAGE_MASK, ctx.prot,
mmu_idx, TARGET_PAGE_SIZE);
ret = 0;
} else if (ret < 0) {
*raddrp = ctx.raddr;
*protp = ctx.prot;
*psizep = TARGET_PAGE_BITS;
return true;
}
if (guest_visible) {
LOG_MMU_STATE(cs);
if (type == ACCESS_CODE) {
switch (ret) {
@ -1565,7 +1531,7 @@ static int cpu_ppc_handle_mmu_fault(CPUPPCState *env, target_ulong address,
case POWERPC_MMU_SOFT_6xx:
cs->exception_index = POWERPC_EXCP_IFTLB;
env->error_code = 1 << 18;
env->spr[SPR_IMISS] = address;
env->spr[SPR_IMISS] = eaddr;
env->spr[SPR_ICMP] = 0x80000000 | ctx.ptem;
goto tlb_miss;
case POWERPC_MMU_SOFT_74xx:
@ -1575,29 +1541,25 @@ static int cpu_ppc_handle_mmu_fault(CPUPPCState *env, target_ulong address,
case POWERPC_MMU_SOFT_4xx_Z:
cs->exception_index = POWERPC_EXCP_ITLB;
env->error_code = 0;
env->spr[SPR_40x_DEAR] = address;
env->spr[SPR_40x_DEAR] = eaddr;
env->spr[SPR_40x_ESR] = 0x00000000;
break;
case POWERPC_MMU_BOOKE206:
booke206_update_mas_tlb_miss(env, address, 2, mmu_idx);
booke206_update_mas_tlb_miss(env, eaddr, 2, mmu_idx);
/* fall through */
case POWERPC_MMU_BOOKE:
cs->exception_index = POWERPC_EXCP_ITLB;
env->error_code = 0;
env->spr[SPR_BOOKE_DEAR] = address;
env->spr[SPR_BOOKE_DEAR] = eaddr;
env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx, MMU_DATA_LOAD);
return -1;
case POWERPC_MMU_MPC8xx:
/* XXX: TODO */
cpu_abort(cs, "MPC8xx MMU model is not implemented\n");
break;
case POWERPC_MMU_MPC8xx:
cpu_abort(cs, "MPC8xx MMU model is not implemented\n");
case POWERPC_MMU_REAL:
cpu_abort(cs, "PowerPC in real mode should never raise "
"any MMU exceptions\n");
return -1;
default:
cpu_abort(cs, "Unknown or invalid MMU model\n");
return -1;
}
break;
case -2:
@ -1634,7 +1596,7 @@ static int cpu_ppc_handle_mmu_fault(CPUPPCState *env, target_ulong address,
cs->exception_index = POWERPC_EXCP_DLTLB;
env->error_code = 0;
}
env->spr[SPR_DMISS] = address;
env->spr[SPR_DMISS] = eaddr;
env->spr[SPR_DCMP] = 0x80000000 | ctx.ptem;
tlb_miss:
env->error_code |= ctx.key << 19;
@ -1652,7 +1614,7 @@ static int cpu_ppc_handle_mmu_fault(CPUPPCState *env, target_ulong address,
tlb_miss_74xx:
/* Implement LRU algorithm */
env->error_code = ctx.key << 19;
env->spr[SPR_TLBMISS] = (address & ~((target_ulong)0x3)) |
env->spr[SPR_TLBMISS] = (eaddr & ~((target_ulong)0x3)) |
((env->last_way + 1) & (env->nb_ways - 1));
env->spr[SPR_PTEHI] = 0x80000000 | ctx.ptem;
break;
@ -1660,7 +1622,7 @@ static int cpu_ppc_handle_mmu_fault(CPUPPCState *env, target_ulong address,
case POWERPC_MMU_SOFT_4xx_Z:
cs->exception_index = POWERPC_EXCP_DTLB;
env->error_code = 0;
env->spr[SPR_40x_DEAR] = address;
env->spr[SPR_40x_DEAR] = eaddr;
if (access_type == MMU_DATA_STORE) {
env->spr[SPR_40x_ESR] = 0x00800000;
} else {
@ -1670,23 +1632,20 @@ static int cpu_ppc_handle_mmu_fault(CPUPPCState *env, target_ulong address,
case POWERPC_MMU_MPC8xx:
/* XXX: TODO */
cpu_abort(cs, "MPC8xx MMU model is not implemented\n");
break;
case POWERPC_MMU_BOOKE206:
booke206_update_mas_tlb_miss(env, address, access_type, mmu_idx);
booke206_update_mas_tlb_miss(env, eaddr, access_type, mmu_idx);
/* fall through */
case POWERPC_MMU_BOOKE:
cs->exception_index = POWERPC_EXCP_DTLB;
env->error_code = 0;
env->spr[SPR_BOOKE_DEAR] = address;
env->spr[SPR_BOOKE_DEAR] = eaddr;
env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx, access_type);
return -1;
break;
case POWERPC_MMU_REAL:
cpu_abort(cs, "PowerPC in real mode should never raise "
"any MMU exceptions\n");
return -1;
default:
cpu_abort(cs, "Unknown or invalid MMU model\n");
return -1;
}
break;
case -2:
@ -1695,16 +1654,16 @@ static int cpu_ppc_handle_mmu_fault(CPUPPCState *env, target_ulong address,
env->error_code = 0;
if (env->mmu_model == POWERPC_MMU_SOFT_4xx
|| env->mmu_model == POWERPC_MMU_SOFT_4xx_Z) {
env->spr[SPR_40x_DEAR] = address;
env->spr[SPR_40x_DEAR] = eaddr;
if (access_type == MMU_DATA_STORE) {
env->spr[SPR_40x_ESR] |= 0x00800000;
}
} else if ((env->mmu_model == POWERPC_MMU_BOOKE) ||
(env->mmu_model == POWERPC_MMU_BOOKE206)) {
env->spr[SPR_BOOKE_DEAR] = address;
env->spr[SPR_BOOKE_DEAR] = eaddr;
env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx, access_type);
} else {
env->spr[SPR_DAR] = address;
env->spr[SPR_DAR] = eaddr;
if (access_type == MMU_DATA_STORE) {
env->spr[SPR_DSISR] = 0x0A000000;
} else {
@ -1719,13 +1678,13 @@ static int cpu_ppc_handle_mmu_fault(CPUPPCState *env, target_ulong address,
/* Floating point load/store */
cs->exception_index = POWERPC_EXCP_ALIGN;
env->error_code = POWERPC_EXCP_ALIGN_FP;
env->spr[SPR_DAR] = address;
env->spr[SPR_DAR] = eaddr;
break;
case ACCESS_RES:
/* lwarx, ldarx or stwcx. */
cs->exception_index = POWERPC_EXCP_DSI;
env->error_code = 0;
env->spr[SPR_DAR] = address;
env->spr[SPR_DAR] = eaddr;
if (access_type == MMU_DATA_STORE) {
env->spr[SPR_DSISR] = 0x06000000;
} else {
@ -1736,7 +1695,7 @@ static int cpu_ppc_handle_mmu_fault(CPUPPCState *env, target_ulong address,
/* eciwx or ecowx */
cs->exception_index = POWERPC_EXCP_DSI;
env->error_code = 0;
env->spr[SPR_DAR] = address;
env->spr[SPR_DAR] = eaddr;
if (access_type == MMU_DATA_STORE) {
env->spr[SPR_DSISR] = 0x06100000;
} else {
@ -1748,16 +1707,14 @@ static int cpu_ppc_handle_mmu_fault(CPUPPCState *env, target_ulong address,
cs->exception_index = POWERPC_EXCP_PROGRAM;
env->error_code =
POWERPC_EXCP_INVAL | POWERPC_EXCP_INVAL_INVAL;
env->spr[SPR_DAR] = address;
env->spr[SPR_DAR] = eaddr;
break;
}
break;
}
}
ret = 1;
}
return ret;
return false;
}
#ifdef CONFIG_TCG
@ -2942,6 +2899,62 @@ void helper_check_tlb_flush_global(CPUPPCState *env)
/*****************************************************************************/
static int cpu_ppc_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr,
MMUAccessType access_type, int mmu_idx)
{
CPUState *cs = CPU(cpu);
int page_size, prot;
hwaddr raddr;
if (!ppc_jumbo_xlate(cpu, eaddr, access_type, &raddr,
&page_size, &prot, mmu_idx, true)) {
return 1;
}
tlb_set_page(cs, eaddr & TARGET_PAGE_MASK, raddr & TARGET_PAGE_MASK,
prot, mmu_idx, 1UL << page_size);
return 0;
}
hwaddr ppc_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
{
PowerPCCPU *cpu = POWERPC_CPU(cs);
CPUPPCState *env = &cpu->env;
hwaddr raddr;
int s, p;
switch (env->mmu_model) {
#if defined(TARGET_PPC64)
case POWERPC_MMU_64B:
case POWERPC_MMU_2_03:
case POWERPC_MMU_2_06:
case POWERPC_MMU_2_07:
return ppc_hash64_get_phys_page_debug(cpu, addr);
case POWERPC_MMU_3_00:
return ppc64_v3_get_phys_page_debug(cpu, addr);
#endif
case POWERPC_MMU_32B:
case POWERPC_MMU_601:
return ppc_hash32_get_phys_page_debug(cpu, addr);
default:
;
}
/*
* Some MMUs have separate TLBs for code and data. If we only
* try an MMU_DATA_LOAD, we may not be able to read instructions
* mapped by code TLBs, so we also try a MMU_INST_FETCH.
*/
if (ppc_jumbo_xlate(cpu, addr, MMU_DATA_LOAD, &raddr, &s, &p, 0, false) ||
ppc_jumbo_xlate(cpu, addr, MMU_INST_FETCH, &raddr, &s, &p, 0, false)) {
return raddr & TARGET_PAGE_MASK;
}
return -1;
}
bool ppc_cpu_tlb_fill(CPUState *cs, vaddr addr, int size,
MMUAccessType access_type, int mmu_idx,
bool probe, uintptr_t retaddr)
@ -2969,7 +2982,7 @@ bool ppc_cpu_tlb_fill(CPUState *cs, vaddr addr, int size,
break;
default:
ret = cpu_ppc_handle_mmu_fault(env, addr, access_type, mmu_idx);
ret = cpu_ppc_handle_mmu_fault(cpu, addr, access_type, mmu_idx);
break;
}
if (unlikely(ret != 0)) {