From 6d2654ffacea813916176c5df27958098b20af6a Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Mon, 10 Oct 2022 20:18:54 -0700 Subject: [PATCH] target/arm: Split out S1Translate type Consolidate most of the inputs and outputs of S1_ptw_translate into a single structure. Plumb this through arm_ld*_ptw from the controlling get_phys_addr_* routine. Signed-off-by: Richard Henderson Reviewed-by: Peter Maydell Message-id: 20221011031911.2408754-8-richard.henderson@linaro.org Signed-off-by: Peter Maydell --- target/arm/ptw.c | 140 ++++++++++++++++++++++++++--------------------- 1 file changed, 79 insertions(+), 61 deletions(-) diff --git a/target/arm/ptw.c b/target/arm/ptw.c index a977d09c6d..dee69ee743 100644 --- a/target/arm/ptw.c +++ b/target/arm/ptw.c @@ -14,9 +14,16 @@ #include "idau.h" -static bool get_phys_addr_lpae(CPUARMState *env, uint64_t address, - MMUAccessType access_type, ARMMMUIdx mmu_idx, - bool is_secure, bool s1_is_el0, +typedef struct S1Translate { + ARMMMUIdx in_mmu_idx; + bool in_secure; + bool out_secure; + hwaddr out_phys; +} S1Translate; + +static bool get_phys_addr_lpae(CPUARMState *env, S1Translate *ptw, + uint64_t address, + MMUAccessType access_type, bool s1_is_el0, GetPhysAddrResult *result, ARMMMUFaultInfo *fi) __attribute__((nonnull)); @@ -211,28 +218,31 @@ static bool ptw_attrs_are_device(uint64_t hcr, ARMCacheAttrs cacheattrs) } /* Translate a S1 pagetable walk through S2 if needed. */ -static hwaddr S1_ptw_translate(CPUARMState *env, ARMMMUIdx mmu_idx, - hwaddr addr, bool *is_secure_ptr, - ARMMMUFaultInfo *fi) +static bool S1_ptw_translate(CPUARMState *env, S1Translate *ptw, + hwaddr addr, ARMMMUFaultInfo *fi) { - bool is_secure = *is_secure_ptr; + bool is_secure = ptw->in_secure; ARMMMUIdx s2_mmu_idx = is_secure ? ARMMMUIdx_Stage2_S : ARMMMUIdx_Stage2; - if (arm_mmu_idx_is_stage1_of_2(mmu_idx) && + if (arm_mmu_idx_is_stage1_of_2(ptw->in_mmu_idx) && !regime_translation_disabled(env, s2_mmu_idx, is_secure)) { GetPhysAddrResult s2 = {}; + S1Translate s2ptw = { + .in_mmu_idx = s2_mmu_idx, + .in_secure = is_secure, + }; uint64_t hcr; int ret; - ret = get_phys_addr_lpae(env, addr, MMU_DATA_LOAD, s2_mmu_idx, - is_secure, false, &s2, fi); + ret = get_phys_addr_lpae(env, &s2ptw, addr, MMU_DATA_LOAD, + false, &s2, fi); if (ret) { assert(fi->type != ARMFault_None); fi->s2addr = addr; fi->stage2 = true; fi->s1ptw = true; fi->s1ns = !is_secure; - return ~0; + return false; } hcr = arm_hcr_el2_eff_secstate(env, is_secure); @@ -246,7 +256,7 @@ static hwaddr S1_ptw_translate(CPUARMState *env, ARMMMUIdx mmu_idx, fi->stage2 = true; fi->s1ptw = true; fi->s1ns = !is_secure; - return ~0; + return false; } if (arm_is_secure_below_el3(env)) { @@ -256,19 +266,21 @@ static hwaddr S1_ptw_translate(CPUARMState *env, ARMMMUIdx mmu_idx, } else { is_secure = !(env->cp15.vtcr_el2 & VTCR_NSW); } - *is_secure_ptr = is_secure; } else { assert(!is_secure); } addr = s2.f.phys_addr; } - return addr; + + ptw->out_secure = is_secure; + ptw->out_phys = addr; + return true; } /* All loads done in the course of a page table walk go through here. */ -static uint32_t arm_ldl_ptw(CPUARMState *env, hwaddr addr, bool is_secure, - ARMMMUIdx mmu_idx, ARMMMUFaultInfo *fi) +static uint32_t arm_ldl_ptw(CPUARMState *env, S1Translate *ptw, hwaddr addr, + ARMMMUFaultInfo *fi) { CPUState *cs = env_cpu(env); MemTxAttrs attrs = {}; @@ -276,13 +288,13 @@ static uint32_t arm_ldl_ptw(CPUARMState *env, hwaddr addr, bool is_secure, 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) { + if (!S1_ptw_translate(env, ptw, addr, fi)) { return 0; } - if (regime_translation_big_endian(env, mmu_idx)) { + addr = ptw->out_phys; + attrs.secure = ptw->out_secure; + as = arm_addressspace(cs, attrs); + if (regime_translation_big_endian(env, ptw->in_mmu_idx)) { data = address_space_ldl_be(as, addr, attrs, &result); } else { data = address_space_ldl_le(as, addr, attrs, &result); @@ -295,8 +307,8 @@ static uint32_t arm_ldl_ptw(CPUARMState *env, hwaddr addr, bool is_secure, return 0; } -static uint64_t arm_ldq_ptw(CPUARMState *env, hwaddr addr, bool is_secure, - ARMMMUIdx mmu_idx, ARMMMUFaultInfo *fi) +static uint64_t arm_ldq_ptw(CPUARMState *env, S1Translate *ptw, hwaddr addr, + ARMMMUFaultInfo *fi) { CPUState *cs = env_cpu(env); MemTxAttrs attrs = {}; @@ -304,13 +316,13 @@ static uint64_t arm_ldq_ptw(CPUARMState *env, hwaddr addr, bool is_secure, 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) { + if (!S1_ptw_translate(env, ptw, addr, fi)) { return 0; } - if (regime_translation_big_endian(env, mmu_idx)) { + addr = ptw->out_phys; + attrs.secure = ptw->out_secure; + as = arm_addressspace(cs, attrs); + if (regime_translation_big_endian(env, ptw->in_mmu_idx)) { data = address_space_ldq_be(as, addr, attrs, &result); } else { data = address_space_ldq_le(as, addr, attrs, &result); @@ -431,10 +443,9 @@ static int simple_ap_to_rw_prot(CPUARMState *env, ARMMMUIdx mmu_idx, int ap) return simple_ap_to_rw_prot_is_user(ap, regime_is_user(env, mmu_idx)); } -static bool get_phys_addr_v5(CPUARMState *env, uint32_t address, - MMUAccessType access_type, ARMMMUIdx mmu_idx, - bool is_secure, GetPhysAddrResult *result, - ARMMMUFaultInfo *fi) +static bool get_phys_addr_v5(CPUARMState *env, S1Translate *ptw, + uint32_t address, MMUAccessType access_type, + GetPhysAddrResult *result, ARMMMUFaultInfo *fi) { int level = 1; uint32_t table; @@ -448,18 +459,18 @@ static bool get_phys_addr_v5(CPUARMState *env, uint32_t address, /* Pagetable walk. */ /* Lookup l1 descriptor. */ - if (!get_level1_table_address(env, mmu_idx, &table, address)) { + if (!get_level1_table_address(env, ptw->in_mmu_idx, &table, address)) { /* Section translation fault if page walk is disabled by PD0 or PD1 */ fi->type = ARMFault_Translation; goto do_fault; } - desc = arm_ldl_ptw(env, table, is_secure, mmu_idx, fi); + desc = arm_ldl_ptw(env, ptw, table, fi); if (fi->type != ARMFault_None) { goto do_fault; } type = (desc & 3); domain = (desc >> 5) & 0x0f; - if (regime_el(env, mmu_idx) == 1) { + if (regime_el(env, ptw->in_mmu_idx) == 1) { dacr = env->cp15.dacr_ns; } else { dacr = env->cp15.dacr_s; @@ -491,7 +502,7 @@ static bool get_phys_addr_v5(CPUARMState *env, uint32_t address, /* Fine pagetable. */ table = (desc & 0xfffff000) | ((address >> 8) & 0xffc); } - desc = arm_ldl_ptw(env, table, is_secure, mmu_idx, fi); + desc = arm_ldl_ptw(env, ptw, table, fi); if (fi->type != ARMFault_None) { goto do_fault; } @@ -535,7 +546,7 @@ static bool get_phys_addr_v5(CPUARMState *env, uint32_t address, g_assert_not_reached(); } } - result->f.prot = ap_to_rw_prot(env, mmu_idx, ap, domain_prot); + result->f.prot = ap_to_rw_prot(env, ptw->in_mmu_idx, ap, domain_prot); result->f.prot |= result->f.prot ? PAGE_EXEC : 0; if (!(result->f.prot & (1 << access_type))) { /* Access permission fault. */ @@ -550,12 +561,12 @@ do_fault: return true; } -static bool get_phys_addr_v6(CPUARMState *env, uint32_t address, - MMUAccessType access_type, ARMMMUIdx mmu_idx, - bool is_secure, GetPhysAddrResult *result, - ARMMMUFaultInfo *fi) +static bool get_phys_addr_v6(CPUARMState *env, S1Translate *ptw, + uint32_t address, MMUAccessType access_type, + GetPhysAddrResult *result, ARMMMUFaultInfo *fi) { ARMCPU *cpu = env_archcpu(env); + ARMMMUIdx mmu_idx = ptw->in_mmu_idx; int level = 1; uint32_t table; uint32_t desc; @@ -576,7 +587,7 @@ static bool get_phys_addr_v6(CPUARMState *env, uint32_t address, fi->type = ARMFault_Translation; goto do_fault; } - desc = arm_ldl_ptw(env, table, is_secure, mmu_idx, fi); + desc = arm_ldl_ptw(env, ptw, table, fi); if (fi->type != ARMFault_None) { goto do_fault; } @@ -629,7 +640,7 @@ static bool get_phys_addr_v6(CPUARMState *env, uint32_t address, ns = extract32(desc, 3, 1); /* Lookup l2 entry. */ table = (desc & 0xfffffc00) | ((address >> 10) & 0x3fc); - desc = arm_ldl_ptw(env, table, is_secure, mmu_idx, fi); + desc = arm_ldl_ptw(env, ptw, table, fi); if (fi->type != ARMFault_None) { goto do_fault; } @@ -972,22 +983,25 @@ static bool check_s2_mmu_setup(ARMCPU *cpu, bool is_aa64, int level, * the WnR bit is never set (the caller must do this). * * @env: CPUARMState + * @ptw: Current and next stage parameters for the walk. * @address: virtual address to get physical address for * @access_type: MMU_DATA_LOAD, MMU_DATA_STORE or MMU_INST_FETCH - * @mmu_idx: MMU index indicating required translation regime - * @s1_is_el0: if @mmu_idx is ARMMMUIdx_Stage2 (so this is a stage 2 page - * table walk), must be true if this is stage 2 of a stage 1+2 + * @s1_is_el0: if @ptw->in_mmu_idx is ARMMMUIdx_Stage2 + * (so this is a stage 2 page table walk), + * must be true if this is stage 2 of a stage 1+2 * walk for an EL0 access. If @mmu_idx is anything else, * @s1_is_el0 is ignored. * @result: set on translation success, * @fi: set to fault info if the translation fails */ -static bool get_phys_addr_lpae(CPUARMState *env, uint64_t address, - MMUAccessType access_type, ARMMMUIdx mmu_idx, - bool is_secure, bool s1_is_el0, +static bool get_phys_addr_lpae(CPUARMState *env, S1Translate *ptw, + uint64_t address, + MMUAccessType access_type, bool s1_is_el0, GetPhysAddrResult *result, ARMMMUFaultInfo *fi) { ARMCPU *cpu = env_archcpu(env); + ARMMMUIdx mmu_idx = ptw->in_mmu_idx; + bool is_secure = ptw->in_secure; /* Read an LPAE long-descriptor translation table. */ ARMFaultType fault_type = ARMFault_Translation; uint32_t level; @@ -1204,7 +1218,8 @@ static bool get_phys_addr_lpae(CPUARMState *env, uint64_t address, descaddr |= (address >> (stride * (4 - level))) & indexmask; descaddr &= ~7ULL; nstable = extract32(tableattrs, 4, 1); - descriptor = arm_ldq_ptw(env, descaddr, !nstable, mmu_idx, fi); + ptw->in_secure = !nstable; + descriptor = arm_ldq_ptw(env, ptw, descaddr, fi); if (fi->type != ARMFault_None) { goto do_fault; } @@ -2361,6 +2376,7 @@ bool get_phys_addr_with_secure(CPUARMState *env, target_ulong address, ARMMMUFaultInfo *fi) { ARMMMUIdx s1_mmu_idx = stage_1_mmu_idx(mmu_idx); + S1Translate ptw; if (mmu_idx != s1_mmu_idx) { /* @@ -2373,7 +2389,6 @@ bool get_phys_addr_with_secure(CPUARMState *env, target_ulong address, int ret; bool ipa_secure, s2walk_secure; ARMCacheAttrs cacheattrs1; - ARMMMUIdx s2_mmu_idx; bool is_el0; uint64_t hcr; @@ -2398,8 +2413,9 @@ bool get_phys_addr_with_secure(CPUARMState *env, target_ulong address, s2walk_secure = false; } - s2_mmu_idx = (s2walk_secure - ? ARMMMUIdx_Stage2_S : ARMMMUIdx_Stage2); + ptw.in_mmu_idx = + s2walk_secure ? ARMMMUIdx_Stage2_S : ARMMMUIdx_Stage2; + ptw.in_secure = s2walk_secure; is_el0 = mmu_idx == ARMMMUIdx_E10_0; /* @@ -2411,8 +2427,8 @@ bool get_phys_addr_with_secure(CPUARMState *env, target_ulong address, cacheattrs1 = result->cacheattrs; memset(result, 0, sizeof(*result)); - ret = get_phys_addr_lpae(env, ipa, access_type, s2_mmu_idx, - s2walk_secure, is_el0, result, fi); + ret = get_phys_addr_lpae(env, &ptw, ipa, access_type, + is_el0, result, fi); fi->s2addr = ipa; /* Combine the S1 and S2 perms. */ @@ -2517,15 +2533,17 @@ bool get_phys_addr_with_secure(CPUARMState *env, target_ulong address, return get_phys_addr_disabled(env, address, access_type, mmu_idx, is_secure, result, fi); } + + ptw.in_mmu_idx = mmu_idx; + ptw.in_secure = is_secure; + if (regime_using_lpae_format(env, mmu_idx)) { - return get_phys_addr_lpae(env, address, access_type, mmu_idx, - is_secure, false, result, fi); + return get_phys_addr_lpae(env, &ptw, address, access_type, false, + result, fi); } else if (regime_sctlr(env, mmu_idx) & SCTLR_XP) { - return get_phys_addr_v6(env, address, access_type, mmu_idx, - is_secure, result, fi); + return get_phys_addr_v6(env, &ptw, address, access_type, result, fi); } else { - return get_phys_addr_v5(env, address, access_type, mmu_idx, - is_secure, result, fi); + return get_phys_addr_v5(env, &ptw, address, access_type, result, fi); } }