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Diffstat (limited to 'target/ppc/mmu-hash32.c')
-rw-r--r--target/ppc/mmu-hash32.c254
1 files changed, 111 insertions, 143 deletions
diff --git a/target/ppc/mmu-hash32.c b/target/ppc/mmu-hash32.c
index 9f0a497657..3957aab2dc 100644
--- a/target/ppc/mmu-hash32.c
+++ b/target/ppc/mmu-hash32.c
@@ -25,9 +25,10 @@
#include "kvm_ppc.h"
#include "internal.h"
#include "mmu-hash32.h"
+#include "mmu-books.h"
#include "exec/log.h"
-/* #define DEBUG_BAT */
+/* #define DEBUG_BATS */
#ifdef DEBUG_BATS
# define LOG_BATS(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__)
@@ -86,25 +87,22 @@ static int ppc_hash32_pp_prot(int key, int pp, int nx)
return prot;
}
-static int ppc_hash32_pte_prot(PowerPCCPU *cpu,
+static int ppc_hash32_pte_prot(int mmu_idx,
target_ulong sr, ppc_hash_pte32_t pte)
{
- CPUPPCState *env = &cpu->env;
unsigned pp, key;
- key = !!(msr_pr ? (sr & SR32_KP) : (sr & SR32_KS));
+ key = !!(mmuidx_pr(mmu_idx) ? (sr & SR32_KP) : (sr & SR32_KS));
pp = pte.pte1 & HPTE32_R_PP;
return ppc_hash32_pp_prot(key, pp, !!(sr & SR32_NX));
}
-static target_ulong hash32_bat_size(PowerPCCPU *cpu,
+static target_ulong hash32_bat_size(int mmu_idx,
target_ulong batu, target_ulong batl)
{
- CPUPPCState *env = &cpu->env;
-
- if ((msr_pr && !(batu & BATU32_VP))
- || (!msr_pr && !(batu & BATU32_VS))) {
+ if ((mmuidx_pr(mmu_idx) && !(batu & BATU32_VP))
+ || (!mmuidx_pr(mmu_idx) && !(batu & BATU32_VS))) {
return 0;
}
@@ -137,14 +135,13 @@ static target_ulong hash32_bat_601_size(PowerPCCPU *cpu,
return BATU32_BEPI & ~((batl & BATL32_601_BL) << 17);
}
-static int hash32_bat_601_prot(PowerPCCPU *cpu,
+static int hash32_bat_601_prot(int mmu_idx,
target_ulong batu, target_ulong batl)
{
- CPUPPCState *env = &cpu->env;
int key, pp;
pp = batu & BATU32_601_PP;
- if (msr_pr == 0) {
+ if (mmuidx_pr(mmu_idx) == 0) {
key = !!(batu & BATU32_601_KS);
} else {
key = !!(batu & BATU32_601_KP);
@@ -153,7 +150,8 @@ static int hash32_bat_601_prot(PowerPCCPU *cpu,
}
static hwaddr ppc_hash32_bat_lookup(PowerPCCPU *cpu, target_ulong ea,
- MMUAccessType access_type, int *prot)
+ MMUAccessType access_type, int *prot,
+ int mmu_idx)
{
CPUPPCState *env = &cpu->env;
target_ulong *BATlt, *BATut;
@@ -177,7 +175,7 @@ static hwaddr ppc_hash32_bat_lookup(PowerPCCPU *cpu, target_ulong ea,
if (unlikely(env->mmu_model == POWERPC_MMU_601)) {
mask = hash32_bat_601_size(cpu, batu, batl);
} else {
- mask = hash32_bat_size(cpu, batu, batl);
+ mask = hash32_bat_size(mmu_idx, batu, batl);
}
LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx
" BATl " TARGET_FMT_lx "\n", __func__,
@@ -187,7 +185,7 @@ static hwaddr ppc_hash32_bat_lookup(PowerPCCPU *cpu, target_ulong ea,
hwaddr raddr = (batl & mask) | (ea & ~mask);
if (unlikely(env->mmu_model == POWERPC_MMU_601)) {
- *prot = hash32_bat_601_prot(cpu, batu, batl);
+ *prot = hash32_bat_601_prot(mmu_idx, batu, batl);
} else {
*prot = hash32_bat_prot(cpu, batu, batl);
}
@@ -199,6 +197,9 @@ static hwaddr ppc_hash32_bat_lookup(PowerPCCPU *cpu, target_ulong ea,
/* No hit */
#if defined(DEBUG_BATS)
if (qemu_log_enabled()) {
+ target_ulong *BATu, *BATl;
+ target_ulong BEPIl, BEPIu, bl;
+
LOG_BATS("no BAT match for " TARGET_FMT_lx ":\n", ea);
for (i = 0; i < 4; i++) {
BATu = &BATut[i];
@@ -218,14 +219,15 @@ static hwaddr ppc_hash32_bat_lookup(PowerPCCPU *cpu, target_ulong ea,
return -1;
}
-static int ppc_hash32_direct_store(PowerPCCPU *cpu, target_ulong sr,
- target_ulong eaddr,
- MMUAccessType access_type,
- hwaddr *raddr, int *prot)
+static bool ppc_hash32_direct_store(PowerPCCPU *cpu, target_ulong sr,
+ target_ulong eaddr,
+ MMUAccessType access_type,
+ hwaddr *raddr, int *prot, int mmu_idx,
+ bool guest_visible)
{
CPUState *cs = CPU(cpu);
CPUPPCState *env = &cpu->env;
- int key = !!(msr_pr ? (sr & SR32_KP) : (sr & SR32_KS));
+ int key = !!(mmuidx_pr(mmu_idx) ? (sr & SR32_KP) : (sr & SR32_KS));
qemu_log_mask(CPU_LOG_MMU, "direct store...\n");
@@ -238,17 +240,23 @@ static int ppc_hash32_direct_store(PowerPCCPU *cpu, target_ulong sr,
*/
*raddr = ((sr & 0xF) << 28) | (eaddr & 0x0FFFFFFF);
*prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
- return 0;
+ return true;
}
if (access_type == MMU_INST_FETCH) {
/* No code fetch is allowed in direct-store areas */
- cs->exception_index = POWERPC_EXCP_ISI;
- env->error_code = 0x10000000;
- return 1;
+ if (guest_visible) {
+ cs->exception_index = POWERPC_EXCP_ISI;
+ env->error_code = 0x10000000;
+ }
+ return false;
}
- switch (env->access_type) {
+ /*
+ * From ppc_cpu_get_phys_page_debug, env->access_type is not set.
+ * Assume ACCESS_INT for that case.
+ */
+ switch (guest_visible ? env->access_type : ACCESS_INT) {
case ACCESS_INT:
/* Integer load/store : only access allowed */
break;
@@ -257,7 +265,7 @@ static int ppc_hash32_direct_store(PowerPCCPU *cpu, target_ulong sr,
cs->exception_index = POWERPC_EXCP_ALIGN;
env->error_code = POWERPC_EXCP_ALIGN_FP;
env->spr[SPR_DAR] = eaddr;
- return 1;
+ return false;
case ACCESS_RES:
/* lwarx, ldarx or srwcx. */
env->error_code = 0;
@@ -267,7 +275,7 @@ static int ppc_hash32_direct_store(PowerPCCPU *cpu, target_ulong sr,
} else {
env->spr[SPR_DSISR] = 0x04000000;
}
- return 1;
+ return false;
case ACCESS_CACHE:
/*
* dcba, dcbt, dcbtst, dcbf, dcbi, dcbst, dcbz, or icbi
@@ -276,7 +284,7 @@ static int ppc_hash32_direct_store(PowerPCCPU *cpu, target_ulong sr,
* no-op, it's quite easy :-)
*/
*raddr = eaddr;
- return 0;
+ return true;
case ACCESS_EXT:
/* eciwx or ecowx */
cs->exception_index = POWERPC_EXCP_DSI;
@@ -287,16 +295,18 @@ static int ppc_hash32_direct_store(PowerPCCPU *cpu, target_ulong sr,
} else {
env->spr[SPR_DSISR] = 0x04100000;
}
- return 1;
+ return false;
default:
- cpu_abort(cs, "ERROR: instruction should not need "
- "address translation\n");
+ cpu_abort(cs, "ERROR: insn should not need address translation\n");
}
- if ((access_type == MMU_DATA_STORE || key != 1) &&
- (access_type == MMU_DATA_LOAD || key != 0)) {
+
+ *prot = key ? PAGE_READ | PAGE_WRITE : PAGE_READ;
+ if (*prot & prot_for_access_type(access_type)) {
*raddr = eaddr;
- return 0;
- } else {
+ return true;
+ }
+
+ if (guest_visible) {
cs->exception_index = POWERPC_EXCP_DSI;
env->error_code = 0;
env->spr[SPR_DAR] = eaddr;
@@ -305,8 +315,8 @@ static int ppc_hash32_direct_store(PowerPCCPU *cpu, target_ulong sr,
} else {
env->spr[SPR_DSISR] = 0x08000000;
}
- return 1;
}
+ return false;
}
hwaddr get_pteg_offset32(PowerPCCPU *cpu, hwaddr hash)
@@ -415,8 +425,9 @@ static hwaddr ppc_hash32_pte_raddr(target_ulong sr, ppc_hash_pte32_t pte,
return (rpn & ~mask) | (eaddr & mask);
}
-int ppc_hash32_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr, int rwx,
- int mmu_idx)
+bool ppc_hash32_xlate(PowerPCCPU *cpu, vaddr eaddr, MMUAccessType access_type,
+ hwaddr *raddrp, int *psizep, int *protp, int mmu_idx,
+ bool guest_visible)
{
CPUState *cs = CPU(cpu);
CPUPPCState *env = &cpu->env;
@@ -425,48 +436,45 @@ int ppc_hash32_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr, int rwx,
ppc_hash_pte32_t pte;
int prot;
int need_prot;
- MMUAccessType access_type;
hwaddr raddr;
- assert((rwx == 0) || (rwx == 1) || (rwx == 2));
- access_type = rwx;
- need_prot = prot_for_access_type(access_type);
+ /* There are no hash32 large pages. */
+ *psizep = TARGET_PAGE_BITS;
/* 1. Handle real mode accesses */
- if (access_type == MMU_INST_FETCH ? !msr_ir : !msr_dr) {
+ if (mmuidx_real(mmu_idx)) {
/* Translation is off */
- raddr = eaddr;
- tlb_set_page(cs, eaddr & TARGET_PAGE_MASK, raddr & TARGET_PAGE_MASK,
- PAGE_READ | PAGE_WRITE | PAGE_EXEC, mmu_idx,
- TARGET_PAGE_SIZE);
- return 0;
+ *raddrp = eaddr;
+ *protp = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
+ return true;
}
+ need_prot = prot_for_access_type(access_type);
+
/* 2. Check Block Address Translation entries (BATs) */
if (env->nb_BATs != 0) {
- raddr = ppc_hash32_bat_lookup(cpu, eaddr, access_type, &prot);
+ raddr = ppc_hash32_bat_lookup(cpu, eaddr, access_type, protp, mmu_idx);
if (raddr != -1) {
- if (need_prot & ~prot) {
- if (access_type == MMU_INST_FETCH) {
- cs->exception_index = POWERPC_EXCP_ISI;
- env->error_code = 0x08000000;
- } else {
- cs->exception_index = POWERPC_EXCP_DSI;
- env->error_code = 0;
- env->spr[SPR_DAR] = eaddr;
- if (access_type == MMU_DATA_STORE) {
- env->spr[SPR_DSISR] = 0x0a000000;
+ if (need_prot & ~*protp) {
+ if (guest_visible) {
+ if (access_type == MMU_INST_FETCH) {
+ cs->exception_index = POWERPC_EXCP_ISI;
+ env->error_code = 0x08000000;
} else {
- env->spr[SPR_DSISR] = 0x08000000;
+ cs->exception_index = POWERPC_EXCP_DSI;
+ env->error_code = 0;
+ env->spr[SPR_DAR] = eaddr;
+ if (access_type == MMU_DATA_STORE) {
+ env->spr[SPR_DSISR] = 0x0a000000;
+ } else {
+ env->spr[SPR_DSISR] = 0x08000000;
+ }
}
}
- return 1;
+ return false;
}
-
- tlb_set_page(cs, eaddr & TARGET_PAGE_MASK,
- raddr & TARGET_PAGE_MASK, prot, mmu_idx,
- TARGET_PAGE_SIZE);
- return 0;
+ *raddrp = raddr;
+ return true;
}
}
@@ -475,67 +483,65 @@ int ppc_hash32_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr, int rwx,
/* 4. Handle direct store segments */
if (sr & SR32_T) {
- if (ppc_hash32_direct_store(cpu, sr, eaddr, access_type,
- &raddr, &prot) == 0) {
- tlb_set_page(cs, eaddr & TARGET_PAGE_MASK,
- raddr & TARGET_PAGE_MASK, prot, mmu_idx,
- TARGET_PAGE_SIZE);
- return 0;
- } else {
- return 1;
- }
+ return ppc_hash32_direct_store(cpu, sr, eaddr, access_type,
+ raddrp, protp, mmu_idx, guest_visible);
}
/* 5. Check for segment level no-execute violation */
if (access_type == MMU_INST_FETCH && (sr & SR32_NX)) {
- cs->exception_index = POWERPC_EXCP_ISI;
- env->error_code = 0x10000000;
- return 1;
+ if (guest_visible) {
+ cs->exception_index = POWERPC_EXCP_ISI;
+ env->error_code = 0x10000000;
+ }
+ return false;
}
/* 6. Locate the PTE in the hash table */
pte_offset = ppc_hash32_htab_lookup(cpu, sr, eaddr, &pte);
if (pte_offset == -1) {
- if (access_type == MMU_INST_FETCH) {
- cs->exception_index = POWERPC_EXCP_ISI;
- env->error_code = 0x40000000;
- } else {
- cs->exception_index = POWERPC_EXCP_DSI;
- env->error_code = 0;
- env->spr[SPR_DAR] = eaddr;
- if (access_type == MMU_DATA_STORE) {
- env->spr[SPR_DSISR] = 0x42000000;
+ if (guest_visible) {
+ if (access_type == MMU_INST_FETCH) {
+ cs->exception_index = POWERPC_EXCP_ISI;
+ env->error_code = 0x40000000;
} else {
- env->spr[SPR_DSISR] = 0x40000000;
+ cs->exception_index = POWERPC_EXCP_DSI;
+ env->error_code = 0;
+ env->spr[SPR_DAR] = eaddr;
+ if (access_type == MMU_DATA_STORE) {
+ env->spr[SPR_DSISR] = 0x42000000;
+ } else {
+ env->spr[SPR_DSISR] = 0x40000000;
+ }
}
}
-
- return 1;
+ return false;
}
qemu_log_mask(CPU_LOG_MMU,
"found PTE at offset %08" HWADDR_PRIx "\n", pte_offset);
/* 7. Check access permissions */
- prot = ppc_hash32_pte_prot(cpu, sr, pte);
+ prot = ppc_hash32_pte_prot(mmu_idx, sr, pte);
if (need_prot & ~prot) {
/* Access right violation */
qemu_log_mask(CPU_LOG_MMU, "PTE access rejected\n");
- if (access_type == MMU_INST_FETCH) {
- cs->exception_index = POWERPC_EXCP_ISI;
- env->error_code = 0x08000000;
- } else {
- cs->exception_index = POWERPC_EXCP_DSI;
- env->error_code = 0;
- env->spr[SPR_DAR] = eaddr;
- if (access_type == MMU_DATA_STORE) {
- env->spr[SPR_DSISR] = 0x0a000000;
+ if (guest_visible) {
+ if (access_type == MMU_INST_FETCH) {
+ cs->exception_index = POWERPC_EXCP_ISI;
+ env->error_code = 0x08000000;
} else {
- env->spr[SPR_DSISR] = 0x08000000;
+ cs->exception_index = POWERPC_EXCP_DSI;
+ env->error_code = 0;
+ env->spr[SPR_DAR] = eaddr;
+ if (access_type == MMU_DATA_STORE) {
+ env->spr[SPR_DSISR] = 0x0a000000;
+ } else {
+ env->spr[SPR_DSISR] = 0x08000000;
+ }
}
}
- return 1;
+ return false;
}
qemu_log_mask(CPU_LOG_MMU, "PTE access granted !\n");
@@ -559,45 +565,7 @@ int ppc_hash32_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr, int rwx,
/* 9. Determine the real address from the PTE */
- raddr = ppc_hash32_pte_raddr(sr, pte, eaddr);
-
- tlb_set_page(cs, eaddr & TARGET_PAGE_MASK, raddr & TARGET_PAGE_MASK,
- prot, mmu_idx, TARGET_PAGE_SIZE);
-
- return 0;
-}
-
-hwaddr ppc_hash32_get_phys_page_debug(PowerPCCPU *cpu, target_ulong eaddr)
-{
- CPUPPCState *env = &cpu->env;
- target_ulong sr;
- hwaddr pte_offset;
- ppc_hash_pte32_t pte;
- int prot;
-
- if (msr_dr == 0) {
- /* Translation is off */
- return eaddr;
- }
-
- if (env->nb_BATs != 0) {
- hwaddr raddr = ppc_hash32_bat_lookup(cpu, eaddr, 0, &prot);
- if (raddr != -1) {
- return raddr;
- }
- }
-
- sr = env->sr[eaddr >> 28];
-
- if (sr & SR32_T) {
- /* FIXME: Add suitable debug support for Direct Store segments */
- return -1;
- }
-
- pte_offset = ppc_hash32_htab_lookup(cpu, sr, eaddr, &pte);
- if (pte_offset == -1) {
- return -1;
- }
-
- return ppc_hash32_pte_raddr(sr, pte, eaddr) & TARGET_PAGE_MASK;
+ *raddrp = ppc_hash32_pte_raddr(sr, pte, eaddr);
+ *protp = prot;
+ return true;
}
generated by cgit v1.2.3 (git 2.26.2) at 2025-02-13 04:05:49 +0000