From: Edgar E. Iglesias Date: Mon, 26 Oct 2015 13:02:03 +0000 (+0100) Subject: target-arm: Add ARMMMUFaultInfo X-Git-Tag: TizenStudio_2.0_p2.3.2~120^2~1^2~107^2~4 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e14b5a23d8c83304559f31397f95d22ada60a19a;p=sdk%2Femulator%2Fqemu.git 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 Signed-off-by: Edgar E. Iglesias Message-id: 1445864527-14520-11-git-send-email-edgar.iglesias@gmail.com Signed-off-by: Peter Maydell --- diff --git a/target-arm/helper.c b/target-arm/helper.c index 4f6098b..3142761 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 8bd37eb..412827b 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 7929c71..86a6d03 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;