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([2602:ae:1547:e101:3286:cc26:3d5e:3f94]) by smtp.gmail.com with ESMTPSA id a37-20020a631a65000000b003c14af50626sm6093779pgm.62.2022.06.03.21.06.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 03 Jun 2022 21:06:23 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org Subject: [PATCH 16/28] target/arm: Move arm_{ldl,ldq}_ptw to ptw.c Date: Fri, 3 Jun 2022 21:05:55 -0700 Message-Id: <20220604040607.269301-17-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220604040607.269301-1-richard.henderson@linaro.org> References: <20220604040607.269301-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::62b; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x62b.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: "Qemu-devel" Move the ptw load functions, plus 3 common subroutines: S1_ptw_translate, ptw_attrs_are_device, and regime_translation_big_endian. This also allows get_phys_addr_lpae to become static again. Signed-off-by: Richard Henderson --- target/arm/ptw.h | 13 ---- target/arm/helper.c | 141 -------------------------------------- target/arm/ptw.c | 160 ++++++++++++++++++++++++++++++++++++++++++-- 3 files changed, 154 insertions(+), 160 deletions(-) diff --git a/target/arm/ptw.h b/target/arm/ptw.h index 31744df664..28b8cb9fb8 100644 --- a/target/arm/ptw.h +++ b/target/arm/ptw.h @@ -13,11 +13,6 @@ extern const uint8_t pamax_map[7]; -uint32_t arm_ldl_ptw(CPUState *cs, hwaddr addr, bool is_secure, - ARMMMUIdx mmu_idx, ARMMMUFaultInfo *fi); -uint64_t arm_ldq_ptw(CPUState *cs, hwaddr addr, bool is_secure, - ARMMMUIdx mmu_idx, ARMMMUFaultInfo *fi); - bool regime_is_user(CPUARMState *env, ARMMMUIdx mmu_idx); bool regime_translation_disabled(CPUARMState *env, ARMMMUIdx mmu_idx); uint64_t regime_ttbr(CPUARMState *env, ARMMMUIdx mmu_idx, int ttbrn); @@ -40,13 +35,5 @@ int get_S2prot(CPUARMState *env, int s2ap, int xn, bool s1_is_el0); int get_S1prot(CPUARMState *env, ARMMMUIdx mmu_idx, bool is_aa64, int ap, int ns, int xn, int pxn); -bool get_phys_addr_lpae(CPUARMState *env, uint64_t address, - MMUAccessType access_type, ARMMMUIdx mmu_idx, - bool s1_is_el0, - hwaddr *phys_ptr, MemTxAttrs *txattrs, int *prot, - target_ulong *page_size_ptr, - ARMMMUFaultInfo *fi, ARMCacheAttrs *cacheattrs) - __attribute__((nonnull)); - #endif /* !CONFIG_USER_ONLY */ #endif /* TARGET_ARM_PTW_H */ diff --git a/target/arm/helper.c b/target/arm/helper.c index 416e155a0f..f6931237fe 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -10439,12 +10439,6 @@ bool regime_translation_disabled(CPUARMState *env, ARMMMUIdx mmu_idx) return (regime_sctlr(env, mmu_idx) & SCTLR_M) == 0; } -static inline bool regime_translation_big_endian(CPUARMState *env, - ARMMMUIdx mmu_idx) -{ - return (regime_sctlr(env, mmu_idx) & SCTLR_EE) != 0; -} - /* Return the TTBR associated with this translation regime */ uint64_t regime_ttbr(CPUARMState *env, ARMMMUIdx mmu_idx, int ttbrn) { @@ -10737,141 +10731,6 @@ int get_S1prot(CPUARMState *env, ARMMMUIdx mmu_idx, bool is_aa64, return prot_rw | PAGE_EXEC; } -static bool ptw_attrs_are_device(CPUARMState *env, ARMCacheAttrs cacheattrs) -{ - /* - * For an S1 page table walk, the stage 1 attributes are always - * some form of "this is Normal memory". The combined S1+S2 - * attributes are therefore only Device if stage 2 specifies Device. - * With HCR_EL2.FWB == 0 this is when descriptor bits [5:4] are 0b00, - * ie when cacheattrs.attrs bits [3:2] are 0b00. - * With HCR_EL2.FWB == 1 this is when descriptor bit [4] is 0, ie - * when cacheattrs.attrs bit [2] is 0. - */ - assert(cacheattrs.is_s2_format); - if (arm_hcr_el2_eff(env) & HCR_FWB) { - return (cacheattrs.attrs & 0x4) == 0; - } else { - return (cacheattrs.attrs & 0xc) == 0; - } -} - -/* Translate a S1 pagetable walk through S2 if needed. */ -static hwaddr S1_ptw_translate(CPUARMState *env, ARMMMUIdx mmu_idx, - hwaddr addr, bool *is_secure, - ARMMMUFaultInfo *fi) -{ - if (arm_mmu_idx_is_stage1_of_2(mmu_idx) && - !regime_translation_disabled(env, ARMMMUIdx_Stage2)) { - target_ulong s2size; - hwaddr s2pa; - int s2prot; - int ret; - ARMMMUIdx s2_mmu_idx = *is_secure ? ARMMMUIdx_Stage2_S - : ARMMMUIdx_Stage2; - ARMCacheAttrs cacheattrs = {}; - MemTxAttrs txattrs = {}; - - ret = get_phys_addr_lpae(env, addr, MMU_DATA_LOAD, s2_mmu_idx, false, - &s2pa, &txattrs, &s2prot, &s2size, fi, - &cacheattrs); - if (ret) { - assert(fi->type != ARMFault_None); - fi->s2addr = addr; - fi->stage2 = true; - fi->s1ptw = true; - fi->s1ns = !*is_secure; - return ~0; - } - if ((arm_hcr_el2_eff(env) & HCR_PTW) && - ptw_attrs_are_device(env, cacheattrs)) { - /* - * PTW set and S1 walk touched S2 Device memory: - * generate Permission fault. - */ - fi->type = ARMFault_Permission; - fi->s2addr = addr; - fi->stage2 = true; - fi->s1ptw = true; - fi->s1ns = !*is_secure; - return ~0; - } - - if (arm_is_secure_below_el3(env)) { - /* Check if page table walk is to secure or non-secure PA space. */ - if (*is_secure) { - *is_secure = !(env->cp15.vstcr_el2.raw_tcr & VSTCR_SW); - } else { - *is_secure = !(env->cp15.vtcr_el2.raw_tcr & VTCR_NSW); - } - } else { - assert(!*is_secure); - } - - addr = s2pa; - } - return addr; -} - -/* All loads done in the course of a page table walk go through here. */ -uint32_t arm_ldl_ptw(CPUState *cs, hwaddr addr, bool is_secure, - ARMMMUIdx mmu_idx, ARMMMUFaultInfo *fi) -{ - ARMCPU *cpu = ARM_CPU(cs); - CPUARMState *env = &cpu->env; - MemTxAttrs attrs = {}; - MemTxResult result = MEMTX_OK; - AddressSpace *as; - uint32_t data; - - addr = S1_ptw_translate(env, mmu_idx, addr, &is_secure, fi); - attrs.secure = is_secure; - as = arm_addressspace(cs, attrs); - if (fi->s1ptw) { - return 0; - } - if (regime_translation_big_endian(env, mmu_idx)) { - data = address_space_ldl_be(as, addr, attrs, &result); - } else { - data = address_space_ldl_le(as, addr, attrs, &result); - } - if (result == MEMTX_OK) { - return data; - } - fi->type = ARMFault_SyncExternalOnWalk; - fi->ea = arm_extabort_type(result); - return 0; -} - -uint64_t arm_ldq_ptw(CPUState *cs, hwaddr addr, bool is_secure, - ARMMMUIdx mmu_idx, ARMMMUFaultInfo *fi) -{ - ARMCPU *cpu = ARM_CPU(cs); - CPUARMState *env = &cpu->env; - MemTxAttrs attrs = {}; - MemTxResult result = MEMTX_OK; - AddressSpace *as; - uint64_t data; - - addr = S1_ptw_translate(env, mmu_idx, addr, &is_secure, fi); - attrs.secure = is_secure; - as = arm_addressspace(cs, attrs); - if (fi->s1ptw) { - return 0; - } - if (regime_translation_big_endian(env, mmu_idx)) { - data = address_space_ldq_be(as, addr, attrs, &result); - } else { - data = address_space_ldq_le(as, addr, attrs, &result); - } - if (result == MEMTX_OK) { - return data; - } - fi->type = ARMFault_SyncExternalOnWalk; - fi->ea = arm_extabort_type(result); - return 0; -} - /* * check_s2_mmu_setup * @cpu: ARMCPU diff --git a/target/arm/ptw.c b/target/arm/ptw.c index cbccf91b13..e4b860d2ae 100644 --- a/target/arm/ptw.c +++ b/target/arm/ptw.c @@ -15,6 +15,154 @@ #include "ptw.h" +static bool get_phys_addr_lpae(CPUARMState *env, uint64_t address, + MMUAccessType access_type, ARMMMUIdx mmu_idx, + bool s1_is_el0, hwaddr *phys_ptr, + MemTxAttrs *txattrs, int *prot, + target_ulong *page_size_ptr, + ARMMMUFaultInfo *fi, ARMCacheAttrs *cacheattrs) + __attribute__((nonnull)); + +static bool regime_translation_big_endian(CPUARMState *env, ARMMMUIdx mmu_idx) +{ + return (regime_sctlr(env, mmu_idx) & SCTLR_EE) != 0; +} + +static bool ptw_attrs_are_device(CPUARMState *env, ARMCacheAttrs cacheattrs) +{ + /* + * For an S1 page table walk, the stage 1 attributes are always + * some form of "this is Normal memory". The combined S1+S2 + * attributes are therefore only Device if stage 2 specifies Device. + * With HCR_EL2.FWB == 0 this is when descriptor bits [5:4] are 0b00, + * ie when cacheattrs.attrs bits [3:2] are 0b00. + * With HCR_EL2.FWB == 1 this is when descriptor bit [4] is 0, ie + * when cacheattrs.attrs bit [2] is 0. + */ + assert(cacheattrs.is_s2_format); + if (arm_hcr_el2_eff(env) & HCR_FWB) { + return (cacheattrs.attrs & 0x4) == 0; + } else { + return (cacheattrs.attrs & 0xc) == 0; + } +} + +/* Translate a S1 pagetable walk through S2 if needed. */ +static hwaddr S1_ptw_translate(CPUARMState *env, ARMMMUIdx mmu_idx, + hwaddr addr, bool *is_secure, + ARMMMUFaultInfo *fi) +{ + if (arm_mmu_idx_is_stage1_of_2(mmu_idx) && + !regime_translation_disabled(env, ARMMMUIdx_Stage2)) { + target_ulong s2size; + hwaddr s2pa; + int s2prot; + int ret; + ARMMMUIdx s2_mmu_idx = *is_secure ? ARMMMUIdx_Stage2_S + : ARMMMUIdx_Stage2; + ARMCacheAttrs cacheattrs = {}; + MemTxAttrs txattrs = {}; + + ret = get_phys_addr_lpae(env, addr, MMU_DATA_LOAD, s2_mmu_idx, false, + &s2pa, &txattrs, &s2prot, &s2size, fi, + &cacheattrs); + if (ret) { + assert(fi->type != ARMFault_None); + fi->s2addr = addr; + fi->stage2 = true; + fi->s1ptw = true; + fi->s1ns = !*is_secure; + return ~0; + } + if ((arm_hcr_el2_eff(env) & HCR_PTW) && + ptw_attrs_are_device(env, cacheattrs)) { + /* + * PTW set and S1 walk touched S2 Device memory: + * generate Permission fault. + */ + fi->type = ARMFault_Permission; + fi->s2addr = addr; + fi->stage2 = true; + fi->s1ptw = true; + fi->s1ns = !*is_secure; + return ~0; + } + + if (arm_is_secure_below_el3(env)) { + /* Check if page table walk is to secure or non-secure PA space. */ + if (*is_secure) { + *is_secure = !(env->cp15.vstcr_el2.raw_tcr & VSTCR_SW); + } else { + *is_secure = !(env->cp15.vtcr_el2.raw_tcr & VTCR_NSW); + } + } else { + assert(!*is_secure); + } + + addr = s2pa; + } + return addr; +} + +/* All loads done in the course of a page table walk go through here. */ +static uint32_t arm_ldl_ptw(CPUState *cs, hwaddr addr, bool is_secure, + ARMMMUIdx mmu_idx, ARMMMUFaultInfo *fi) +{ + ARMCPU *cpu = ARM_CPU(cs); + CPUARMState *env = &cpu->env; + MemTxAttrs attrs = {}; + MemTxResult result = MEMTX_OK; + AddressSpace *as; + uint32_t data; + + addr = S1_ptw_translate(env, mmu_idx, addr, &is_secure, fi); + attrs.secure = is_secure; + as = arm_addressspace(cs, attrs); + if (fi->s1ptw) { + return 0; + } + if (regime_translation_big_endian(env, mmu_idx)) { + data = address_space_ldl_be(as, addr, attrs, &result); + } else { + data = address_space_ldl_le(as, addr, attrs, &result); + } + if (result == MEMTX_OK) { + return data; + } + fi->type = ARMFault_SyncExternalOnWalk; + fi->ea = arm_extabort_type(result); + return 0; +} + +static uint64_t arm_ldq_ptw(CPUState *cs, hwaddr addr, bool is_secure, + ARMMMUIdx mmu_idx, ARMMMUFaultInfo *fi) +{ + ARMCPU *cpu = ARM_CPU(cs); + CPUARMState *env = &cpu->env; + MemTxAttrs attrs = {}; + MemTxResult result = MEMTX_OK; + AddressSpace *as; + uint64_t data; + + addr = S1_ptw_translate(env, mmu_idx, addr, &is_secure, fi); + attrs.secure = is_secure; + as = arm_addressspace(cs, attrs); + if (fi->s1ptw) { + return 0; + } + if (regime_translation_big_endian(env, mmu_idx)) { + data = address_space_ldq_be(as, addr, attrs, &result); + } else { + data = address_space_ldq_le(as, addr, attrs, &result); + } + if (result == MEMTX_OK) { + return data; + } + fi->type = ARMFault_SyncExternalOnWalk; + fi->ea = arm_extabort_type(result); + return 0; +} + static bool get_level1_table_address(CPUARMState *env, ARMMMUIdx mmu_idx, uint32_t *table, uint32_t address) { @@ -338,12 +486,12 @@ do_fault: * @fi: set to fault info if the translation fails * @cacheattrs: (if non-NULL) set to the cacheability/shareability attributes */ -bool get_phys_addr_lpae(CPUARMState *env, uint64_t address, - MMUAccessType access_type, ARMMMUIdx mmu_idx, - bool s1_is_el0, - hwaddr *phys_ptr, MemTxAttrs *txattrs, int *prot, - target_ulong *page_size_ptr, - ARMMMUFaultInfo *fi, ARMCacheAttrs *cacheattrs) +static bool get_phys_addr_lpae(CPUARMState *env, uint64_t address, + MMUAccessType access_type, ARMMMUIdx mmu_idx, + bool s1_is_el0, hwaddr *phys_ptr, + MemTxAttrs *txattrs, int *prot, + target_ulong *page_size_ptr, + ARMMMUFaultInfo *fi, ARMCacheAttrs *cacheattrs) { ARMCPU *cpu = env_archcpu(env); CPUState *cs = CPU(cpu);