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authorEdgar E. Iglesias <edgar.iglesias@xilinx.com>2015-10-26 14:02:03 +0100
committerPeter Maydell <peter.maydell@linaro.org>2015-10-27 15:59:47 +0000
commite14b5a23d8c83304559f31397f95d22ada60a19a (patch)
treea72d80e39e3223ff51c72939cb5f2a7c8b5fed24 /target-arm
parentaf51f566ec7106d5e834476e78681a7b354f3c7c (diff)
downloadqemu-arm-e14b5a23d8c83304559f31397f95d22ada60a19a.tar.gz
target-arm: Add ARMMMUFaultInfo
Introduce ARMMMUFaultInfo to propagate MMU Fault information across the MMU translation code path. This is in preparation for adding Stage-2 translation. No functional changes. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Message-id: 1445864527-14520-11-git-send-email-edgar.iglesias@gmail.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target-arm')
-rw-r--r--target-arm/helper.c32
-rw-r--r--target-arm/internals.h15
-rw-r--r--target-arm/op_helper.c3
3 files changed, 36 insertions, 14 deletions
diff --git a/target-arm/helper.c b/target-arm/helper.c
index 4f6098b235..3142761157 100644
--- a/target-arm/helper.c
+++ b/target-arm/helper.c
@@ -18,7 +18,8 @@
static bool get_phys_addr(CPUARMState *env, target_ulong address,
int access_type, ARMMMUIdx mmu_idx,
hwaddr *phys_ptr, MemTxAttrs *attrs, int *prot,
- target_ulong *page_size, uint32_t *fsr);
+ target_ulong *page_size, uint32_t *fsr,
+ ARMMMUFaultInfo *fi);
/* Definitions for the PMCCNTR and PMCR registers */
#define PMCRD 0x8
@@ -1778,9 +1779,10 @@ static uint64_t do_ats_write(CPUARMState *env, uint64_t value,
bool ret;
uint64_t par64;
MemTxAttrs attrs = {};
+ ARMMMUFaultInfo fi = {};
ret = get_phys_addr(env, value, access_type, mmu_idx,
- &phys_addr, &attrs, &prot, &page_size, &fsr);
+ &phys_addr, &attrs, &prot, &page_size, &fsr, &fi);
if (extended_addresses_enabled(env)) {
/* fsr is a DFSR/IFSR value for the long descriptor
* translation table format, but with WnR always clear.
@@ -6231,7 +6233,8 @@ static uint64_t arm_ldq_ptw(CPUState *cs, hwaddr addr, bool is_secure)
static bool get_phys_addr_v5(CPUARMState *env, uint32_t address,
int access_type, ARMMMUIdx mmu_idx,
hwaddr *phys_ptr, int *prot,
- target_ulong *page_size, uint32_t *fsr)
+ target_ulong *page_size, uint32_t *fsr,
+ ARMMMUFaultInfo *fi)
{
CPUState *cs = CPU(arm_env_get_cpu(env));
int code;
@@ -6344,7 +6347,8 @@ do_fault:
static bool get_phys_addr_v6(CPUARMState *env, uint32_t address,
int access_type, ARMMMUIdx mmu_idx,
hwaddr *phys_ptr, MemTxAttrs *attrs, int *prot,
- target_ulong *page_size, uint32_t *fsr)
+ target_ulong *page_size, uint32_t *fsr,
+ ARMMMUFaultInfo *fi)
{
CPUState *cs = CPU(arm_env_get_cpu(env));
int code;
@@ -6554,7 +6558,8 @@ static bool check_s2_startlevel(ARMCPU *cpu, bool is_aa64, int level,
static bool get_phys_addr_lpae(CPUARMState *env, target_ulong address,
int access_type, ARMMMUIdx mmu_idx,
hwaddr *phys_ptr, MemTxAttrs *txattrs, int *prot,
- target_ulong *page_size_ptr, uint32_t *fsr)
+ target_ulong *page_size_ptr, uint32_t *fsr,
+ ARMMMUFaultInfo *fi)
{
ARMCPU *cpu = arm_env_get_cpu(env);
CPUState *cs = CPU(cpu);
@@ -7129,7 +7134,8 @@ static bool get_phys_addr_pmsav5(CPUARMState *env, uint32_t address,
static bool get_phys_addr(CPUARMState *env, target_ulong address,
int access_type, ARMMMUIdx mmu_idx,
hwaddr *phys_ptr, MemTxAttrs *attrs, int *prot,
- target_ulong *page_size, uint32_t *fsr)
+ target_ulong *page_size, uint32_t *fsr,
+ ARMMMUFaultInfo *fi)
{
if (mmu_idx == ARMMMUIdx_S12NSE0 || mmu_idx == ARMMMUIdx_S12NSE1) {
/* TODO: when we support EL2 we should here call ourselves recursively
@@ -7188,13 +7194,13 @@ static bool get_phys_addr(CPUARMState *env, target_ulong address,
if (regime_using_lpae_format(env, mmu_idx)) {
return get_phys_addr_lpae(env, address, access_type, mmu_idx, phys_ptr,
- attrs, prot, page_size, fsr);
+ attrs, prot, page_size, fsr, fi);
} else if (regime_sctlr(env, mmu_idx) & SCTLR_XP) {
return get_phys_addr_v6(env, address, access_type, mmu_idx, phys_ptr,
- attrs, prot, page_size, fsr);
+ attrs, prot, page_size, fsr, fi);
} else {
return get_phys_addr_v5(env, address, access_type, mmu_idx, phys_ptr,
- prot, page_size, fsr);
+ prot, page_size, fsr, fi);
}
}
@@ -7203,7 +7209,8 @@ static bool get_phys_addr(CPUARMState *env, target_ulong address,
* fsr with ARM DFSR/IFSR fault register format value on failure.
*/
bool arm_tlb_fill(CPUState *cs, vaddr address,
- int access_type, int mmu_idx, uint32_t *fsr)
+ int access_type, int mmu_idx, uint32_t *fsr,
+ ARMMMUFaultInfo *fi)
{
ARMCPU *cpu = ARM_CPU(cs);
CPUARMState *env = &cpu->env;
@@ -7214,7 +7221,7 @@ bool arm_tlb_fill(CPUState *cs, vaddr address,
MemTxAttrs attrs = {};
ret = get_phys_addr(env, address, access_type, mmu_idx, &phys_addr,
- &attrs, &prot, &page_size, fsr);
+ &attrs, &prot, &page_size, fsr, fi);
if (!ret) {
/* Map a single [sub]page. */
phys_addr &= TARGET_PAGE_MASK;
@@ -7237,9 +7244,10 @@ hwaddr arm_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
bool ret;
uint32_t fsr;
MemTxAttrs attrs = {};
+ ARMMMUFaultInfo fi = {};
ret = get_phys_addr(env, addr, 0, cpu_mmu_index(env, false), &phys_addr,
- &attrs, &prot, &page_size, &fsr);
+ &attrs, &prot, &page_size, &fsr, &fi);
if (ret) {
return -1;
diff --git a/target-arm/internals.h b/target-arm/internals.h
index 8bd37eba65..412827bcbf 100644
--- a/target-arm/internals.h
+++ b/target-arm/internals.h
@@ -414,8 +414,21 @@ bool arm_is_psci_call(ARMCPU *cpu, int excp_type);
void arm_handle_psci_call(ARMCPU *cpu);
#endif
+/**
+ * ARMMMUFaultInfo: Information describing an ARM MMU Fault
+ * @s2addr: Address that caused a fault at stage 2
+ * @stage2: True if we faulted at stage 2
+ * @s1ptw: True if we faulted at stage 2 while doing a stage 1 page-table walk
+ */
+typedef struct ARMMMUFaultInfo ARMMMUFaultInfo;
+struct ARMMMUFaultInfo {
+ target_ulong s2addr;
+ bool stage2;
+ bool s1ptw;
+};
+
/* Do a page table walk and add page to TLB if possible */
bool arm_tlb_fill(CPUState *cpu, vaddr address, int rw, int mmu_idx,
- uint32_t *fsr);
+ uint32_t *fsr, ARMMMUFaultInfo *fi);
#endif
diff --git a/target-arm/op_helper.c b/target-arm/op_helper.c
index 7929c71b43..86a6d038c7 100644
--- a/target-arm/op_helper.c
+++ b/target-arm/op_helper.c
@@ -83,8 +83,9 @@ void tlb_fill(CPUState *cs, target_ulong addr, int is_write, int mmu_idx,
{
bool ret;
uint32_t fsr = 0;
+ ARMMMUFaultInfo fi = {};
- ret = arm_tlb_fill(cs, addr, is_write, mmu_idx, &fsr);
+ ret = arm_tlb_fill(cs, addr, is_write, mmu_idx, &fsr, &fi);
if (unlikely(ret)) {
ARMCPU *cpu = ARM_CPU(cs);
CPUARMState *env = &cpu->env;