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-rw-r--r--target-ppc/Makefile.objs2
-rw-r--r--target-ppc/cpu.h2
-rw-r--r--target-ppc/mmu-hash32.c85
-rw-r--r--target-ppc/mmu-hash32.h12
-rw-r--r--target-ppc/mmu-hash64.c65
-rw-r--r--target-ppc/mmu-hash64.h2
-rw-r--r--target-ppc/mmu_helper.c67
7 files changed, 179 insertions, 56 deletions
diff --git a/target-ppc/Makefile.objs b/target-ppc/Makefile.objs
index 4ef9fc0491..c80911f2c7 100644
--- a/target-ppc/Makefile.objs
+++ b/target-ppc/Makefile.objs
@@ -1,7 +1,7 @@
obj-y += cpu-models.o
obj-y += translate.o
ifeq ($(CONFIG_SOFTMMU),y)
-obj-y += machine.o
+obj-y += machine.o mmu-hash32.o
obj-$(TARGET_PPC64) += mmu-hash64.o
endif
obj-$(CONFIG_KVM) += kvm.o kvm_ppc.o
diff --git a/target-ppc/cpu.h b/target-ppc/cpu.h
index a3e1362b7a..625feb2664 100644
--- a/target-ppc/cpu.h
+++ b/target-ppc/cpu.h
@@ -1133,6 +1133,8 @@ void ppc_hw_interrupt (CPUPPCState *env);
#if !defined(CONFIG_USER_ONLY)
void ppc_store_sdr1 (CPUPPCState *env, target_ulong value);
+int pp_check(int key, int pp, int nx);
+int check_prot(int prot, int rw, int access_type);
#endif /* !defined(CONFIG_USER_ONLY) */
void ppc_store_msr (CPUPPCState *env, target_ulong value);
diff --git a/target-ppc/mmu-hash32.c b/target-ppc/mmu-hash32.c
new file mode 100644
index 0000000000..ce5389d217
--- /dev/null
+++ b/target-ppc/mmu-hash32.c
@@ -0,0 +1,85 @@
+/*
+ * PowerPC MMU, TLB and BAT emulation helpers for QEMU.
+ *
+ * Copyright (c) 2003-2007 Jocelyn Mayer
+ * Copyright (c) 2013 David Gibson, IBM Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "cpu.h"
+#include "helper.h"
+#include "sysemu/kvm.h"
+#include "kvm_ppc.h"
+#include "mmu-hash32.h"
+
+//#define DEBUG_MMU
+
+#ifdef DEBUG_MMU
+# define LOG_MMU(...) qemu_log(__VA_ARGS__)
+# define LOG_MMU_STATE(env) log_cpu_state((env), 0)
+#else
+# define LOG_MMU(...) do { } while (0)
+# define LOG_MMU_STATE(...) do { } while (0)
+#endif
+
+#define PTE_PTEM_MASK 0x7FFFFFBF
+#define PTE_CHECK_MASK (TARGET_PAGE_MASK | 0x7B)
+
+static inline int pte_is_valid_hash32(target_ulong pte0)
+{
+ return pte0 & 0x80000000 ? 1 : 0;
+}
+
+int pte_check_hash32(mmu_ctx_t *ctx, target_ulong pte0,
+ target_ulong pte1, int h, int rw, int type)
+{
+ target_ulong ptem, mmask;
+ int access, ret, pteh, ptev, pp;
+
+ ret = -1;
+ /* Check validity and table match */
+ ptev = pte_is_valid_hash32(pte0);
+ pteh = (pte0 >> 6) & 1;
+ if (ptev && h == pteh) {
+ /* Check vsid & api */
+ ptem = pte0 & PTE_PTEM_MASK;
+ mmask = PTE_CHECK_MASK;
+ pp = pte1 & 0x00000003;
+ if (ptem == ctx->ptem) {
+ if (ctx->raddr != (hwaddr)-1ULL) {
+ /* all matches should have equal RPN, WIMG & PP */
+ if ((ctx->raddr & mmask) != (pte1 & mmask)) {
+ qemu_log("Bad RPN/WIMG/PP\n");
+ return -3;
+ }
+ }
+ /* Compute access rights */
+ access = pp_check(ctx->key, pp, ctx->nx);
+ /* Keep the matching PTE informations */
+ ctx->raddr = pte1;
+ ctx->prot = access;
+ ret = check_prot(ctx->prot, rw, type);
+ if (ret == 0) {
+ /* Access granted */
+ LOG_MMU("PTE access granted !\n");
+ } else {
+ /* Access right violation */
+ LOG_MMU("PTE access rejected\n");
+ }
+ }
+ }
+
+ return ret;
+}
diff --git a/target-ppc/mmu-hash32.h b/target-ppc/mmu-hash32.h
new file mode 100644
index 0000000000..24110857d2
--- /dev/null
+++ b/target-ppc/mmu-hash32.h
@@ -0,0 +1,12 @@
+#if !defined (__MMU_HASH32_H__)
+#define __MMU_HASH32_H__
+
+#ifndef CONFIG_USER_ONLY
+
+int pte32_is_valid(target_ulong pte0);
+int pte_check_hash32(mmu_ctx_t *ctx, target_ulong pte0,
+ target_ulong pte1, int h, int rw, int type);
+
+#endif /* CONFIG_USER_ONLY */
+
+#endif /* __MMU_HASH32_H__ */
diff --git a/target-ppc/mmu-hash64.c b/target-ppc/mmu-hash64.c
index a72e7c102b..9c0de1bbd9 100644
--- a/target-ppc/mmu-hash64.c
+++ b/target-ppc/mmu-hash64.c
@@ -23,8 +23,17 @@
#include "kvm_ppc.h"
#include "mmu-hash64.h"
+//#define DEBUG_MMU
//#define DEBUG_SLB
+#ifdef DEBUG_MMU
+# define LOG_MMU(...) qemu_log(__VA_ARGS__)
+# define LOG_MMU_STATE(env) log_cpu_state((env), 0)
+#else
+# define LOG_MMU(...) do { } while (0)
+# define LOG_MMU_STATE(...) do { } while (0)
+#endif
+
#ifdef DEBUG_SLB
# define LOG_SLB(...) qemu_log(__VA_ARGS__)
#else
@@ -209,3 +218,59 @@ target_ulong helper_load_slb_vsid(CPUPPCState *env, target_ulong rb)
}
return rt;
}
+
+/*
+ * 64-bit hash table MMU handling
+ */
+
+#define PTE64_PTEM_MASK 0xFFFFFFFFFFFFFF80ULL
+#define PTE64_CHECK_MASK (TARGET_PAGE_MASK | 0x7F)
+
+static inline int pte64_is_valid(target_ulong pte0)
+{
+ return pte0 & 0x0000000000000001ULL ? 1 : 0;
+}
+
+int pte64_check(mmu_ctx_t *ctx, target_ulong pte0,
+ target_ulong pte1, int h, int rw, int type)
+{
+ target_ulong ptem, mmask;
+ int access, ret, pteh, ptev, pp;
+
+ ret = -1;
+ /* Check validity and table match */
+ ptev = pte64_is_valid(pte0);
+ pteh = (pte0 >> 1) & 1;
+ if (ptev && h == pteh) {
+ /* Check vsid & api */
+ ptem = pte0 & PTE64_PTEM_MASK;
+ mmask = PTE64_CHECK_MASK;
+ pp = (pte1 & 0x00000003) | ((pte1 >> 61) & 0x00000004);
+ ctx->nx = (pte1 >> 2) & 1; /* No execute bit */
+ ctx->nx |= (pte1 >> 3) & 1; /* Guarded bit */
+ if (ptem == ctx->ptem) {
+ if (ctx->raddr != (hwaddr)-1ULL) {
+ /* all matches should have equal RPN, WIMG & PP */
+ if ((ctx->raddr & mmask) != (pte1 & mmask)) {
+ qemu_log("Bad RPN/WIMG/PP\n");
+ return -3;
+ }
+ }
+ /* Compute access rights */
+ access = pp_check(ctx->key, pp, ctx->nx);
+ /* Keep the matching PTE informations */
+ ctx->raddr = pte1;
+ ctx->prot = access;
+ ret = check_prot(ctx->prot, rw, type);
+ if (ret == 0) {
+ /* Access granted */
+ LOG_MMU("PTE access granted !\n");
+ } else {
+ /* Access right violation */
+ LOG_MMU("PTE access rejected\n");
+ }
+ }
+ }
+
+ return ret;
+}
diff --git a/target-ppc/mmu-hash64.h b/target-ppc/mmu-hash64.h
index 894b1f2a2b..1a2e3e7258 100644
--- a/target-ppc/mmu-hash64.h
+++ b/target-ppc/mmu-hash64.h
@@ -7,6 +7,8 @@
ppc_slb_t *slb_lookup(CPUPPCState *env, target_ulong eaddr);
void dump_slb(FILE *f, fprintf_function cpu_fprintf, CPUPPCState *env);
int ppc_store_slb (CPUPPCState *env, target_ulong rb, target_ulong rs);
+int pte64_check(mmu_ctx_t *ctx, target_ulong pte0,
+ target_ulong pte1, int h, int rw, int type);
#endif
#endif /* CONFIG_USER_ONLY */
diff --git a/target-ppc/mmu_helper.c b/target-ppc/mmu_helper.c
index 671ca5e83d..c7620c0c42 100644
--- a/target-ppc/mmu_helper.c
+++ b/target-ppc/mmu_helper.c
@@ -21,6 +21,7 @@
#include "sysemu/kvm.h"
#include "kvm_ppc.h"
#include "mmu-hash64.h"
+#include "mmu-hash32.h"
//#define DEBUG_MMU
//#define DEBUG_BATS
@@ -87,21 +88,10 @@ static inline void pte_invalidate(target_ulong *pte0)
*pte0 &= ~0x80000000;
}
-#if defined(TARGET_PPC64)
-static inline int pte64_is_valid(target_ulong pte0)
-{
- return pte0 & 0x0000000000000001ULL ? 1 : 0;
-}
-#endif
-
#define PTE_PTEM_MASK 0x7FFFFFBF
#define PTE_CHECK_MASK (TARGET_PAGE_MASK | 0x7B)
-#if defined(TARGET_PPC64)
-#define PTE64_PTEM_MASK 0xFFFFFFFFFFFFFF80ULL
-#define PTE64_CHECK_MASK (TARGET_PAGE_MASK | 0x7F)
-#endif
-static inline int pp_check(int key, int pp, int nx)
+int pp_check(int key, int pp, int nx)
{
int access;
@@ -142,7 +132,7 @@ static inline int pp_check(int key, int pp, int nx)
return access;
}
-static inline int check_prot(int prot, int rw, int access_type)
+int check_prot(int prot, int rw, int access_type)
{
int ret;
@@ -169,40 +159,21 @@ static inline int check_prot(int prot, int rw, int access_type)
return ret;
}
-static inline int pte_check(mmu_ctx_t *ctx, int is_64b, target_ulong pte0,
- target_ulong pte1, int h, int rw, int type)
+static inline int ppc6xx_tlb_pte_check(mmu_ctx_t *ctx, target_ulong pte0,
+ target_ulong pte1, int h, int rw, int type)
{
target_ulong ptem, mmask;
int access, ret, pteh, ptev, pp;
ret = -1;
/* Check validity and table match */
-#if defined(TARGET_PPC64)
- if (is_64b) {
- ptev = pte64_is_valid(pte0);
- pteh = (pte0 >> 1) & 1;
- } else
-#endif
- {
- ptev = pte_is_valid(pte0);
- pteh = (pte0 >> 6) & 1;
- }
+ ptev = pte_is_valid(pte0);
+ pteh = (pte0 >> 6) & 1;
if (ptev && h == pteh) {
/* Check vsid & api */
-#if defined(TARGET_PPC64)
- if (is_64b) {
- ptem = pte0 & PTE64_PTEM_MASK;
- mmask = PTE64_CHECK_MASK;
- pp = (pte1 & 0x00000003) | ((pte1 >> 61) & 0x00000004);
- ctx->nx = (pte1 >> 2) & 1; /* No execute bit */
- ctx->nx |= (pte1 >> 3) & 1; /* Guarded bit */
- } else
-#endif
- {
- ptem = pte0 & PTE_PTEM_MASK;
- mmask = PTE_CHECK_MASK;
- pp = pte1 & 0x00000003;
- }
+ ptem = pte0 & PTE_PTEM_MASK;
+ mmask = PTE_CHECK_MASK;
+ pp = pte1 & 0x00000003;
if (ptem == ctx->ptem) {
if (ctx->raddr != (hwaddr)-1ULL) {
/* all matches should have equal RPN, WIMG & PP */
@@ -230,20 +201,6 @@ static inline int pte_check(mmu_ctx_t *ctx, int is_64b, target_ulong pte0,
return ret;
}
-static inline int pte32_check(mmu_ctx_t *ctx, target_ulong pte0,
- target_ulong pte1, int h, int rw, int type)
-{
- return pte_check(ctx, 0, pte0, pte1, h, rw, type);
-}
-
-#if defined(TARGET_PPC64)
-static inline int pte64_check(mmu_ctx_t *ctx, target_ulong pte0,
- target_ulong pte1, int h, int rw, int type)
-{
- return pte_check(ctx, 1, pte0, pte1, h, rw, type);
-}
-#endif
-
static inline int pte_update_flags(mmu_ctx_t *ctx, target_ulong *pte1p,
int ret, int rw)
{
@@ -381,7 +338,7 @@ static inline int ppc6xx_tlb_check(CPUPPCState *env, mmu_ctx_t *ctx,
pte_is_valid(tlb->pte0) ? "valid" : "inval",
tlb->EPN, eaddr, tlb->pte1,
rw ? 'S' : 'L', access_type == ACCESS_CODE ? 'I' : 'D');
- switch (pte32_check(ctx, tlb->pte0, tlb->pte1, 0, rw, access_type)) {
+ switch (ppc6xx_tlb_pte_check(ctx, tlb->pte0, tlb->pte1, 0, rw, access_type)) {
case -3:
/* TLB inconsistency */
return -1;
@@ -590,7 +547,7 @@ static inline int find_pte2(CPUPPCState *env, mmu_ctx_t *ctx, int is_64b, int h,
pte0 = ldl_phys(env->htab_base + pteg_off + (i * 8));
pte1 = ldl_phys(env->htab_base + pteg_off + (i * 8) + 4);
}
- r = pte32_check(ctx, pte0, pte1, h, rw, type);
+ r = pte_check_hash32(ctx, pte0, pte1, h, rw, type);
LOG_MMU("Load pte from %08" HWADDR_PRIx " => " TARGET_FMT_lx " "
TARGET_FMT_lx " %d %d %d " TARGET_FMT_lx "\n",
pteg_off + (i * 8), pte0, pte1, (int)(pte0 >> 31), h,
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-24 07:53:52 +0000