| Message ID | 20210602192604.90846-3-lucas.araujo@eldorado.org.br (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | target/ppc: mmu cleanup | expand |
On Wed, Jun 02, 2021 at 04:26:02PM -0300, Lucas Mateus Castro (alqotel) wrote: > Moved functions in mmu_helper.c that should be compiled in build to > mmu_common.c, moved declaration of functions that both files use to > cpu.h and moved struct declarations and inline functions needed by > both to target/ppc/internal.h. Updated meson.build to compile the > new file. > > Signed-off-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br> > --- > Had to turn a few functions non static as it was used by both > mmu_common.c and mmu_helper.c. Added the declaration of mmu_ctx_t to > cpu.h so functions there can reference it and added the definition to > internal.h so functions in both mmu_* files can access it. > And maybe the tlb functions should be declared in internal.h instead of > cpu.h. > --- > target/ppc/cpu.h | 35 + > target/ppc/internal.h | 26 + > target/ppc/meson.build | 6 +- > target/ppc/mmu_common.c | 1606 ++++++++++++++++++++++++++++++++++ > target/ppc/mmu_helper.c | 1814 +++------------------------------------ > 5 files changed, 1774 insertions(+), 1713 deletions(-) > create mode 100644 target/ppc/mmu_common.c > > diff --git a/target/ppc/cpu.h b/target/ppc/cpu.h > index b0934d9be4..cfc35ef83e 100644 > --- a/target/ppc/cpu.h > +++ b/target/ppc/cpu.h > @@ -1329,6 +1329,41 @@ void store_booke_tsr(CPUPPCState *env, target_ulong val); > void ppc_tlb_invalidate_all(CPUPPCState *env); > void ppc_tlb_invalidate_one(CPUPPCState *env, target_ulong addr); > void cpu_ppc_set_vhyp(PowerPCCPU *cpu, PPCVirtualHypervisor *vhyp); > + > +typedef struct mmu_ctx_t mmu_ctx_t; > +int ppcemb_tlb_check(CPUPPCState *env, ppcemb_tlb_t *tlb, > + hwaddr *raddrp, > + target_ulong address, uint32_t pid, int ext, > + int i); > +int get_physical_address_wtlb(CPUPPCState *env, mmu_ctx_t *ctx, > + target_ulong eaddr, > + MMUAccessType access_type, int type, > + int mmu_idx); > +hwaddr booke206_tlb_to_page_size(CPUPPCState *env, > + ppcmas_tlb_t *tlb); > +int ppcmas_tlb_check(CPUPPCState *env, ppcmas_tlb_t *tlb, > + hwaddr *raddrp, target_ulong address, > + uint32_t pid); > +int get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, > + target_ulong eaddr, MMUAccessType access_type, > + int type); > +static inline int ppc6xx_tlb_getnum(CPUPPCState *env, target_ulong eaddr, > + int way, int is_code) > +{ > + int nr; > + > + /* Select TLB num in a way from address */ > + nr = (eaddr >> TARGET_PAGE_BITS) & (env->tlb_per_way - 1); > + /* Select TLB way */ > + nr += env->tlb_per_way * way; > + /* 6xx have separate TLBs for instructions and data */ > + if (is_code && env->id_tlbs == 1) { > + nr += env->nb_tlb; > + } > + > + return nr; > +} This is a rather complex and model specific function to have inline in a header. > + > #endif > #endif > > diff --git a/target/ppc/internal.h b/target/ppc/internal.h > index 2b4b06eb76..7d2913ec28 100644 > --- a/target/ppc/internal.h > +++ b/target/ppc/internal.h > @@ -247,4 +247,30 @@ static inline int prot_for_access_type(MMUAccessType access_type) > g_assert_not_reached(); > } > > +/* Context used internally during MMU translations */ > + > +struct mmu_ctx_t { > + hwaddr raddr; /* Real address */ > + hwaddr eaddr; /* Effective address */ > + int prot; /* Protection bits */ > + hwaddr hash[2]; /* Pagetable hash values */ > + target_ulong ptem; /* Virtual segment ID | API */ > + int key; /* Access key */ > + int nx; /* Non-execute area */ > +}; > + > +/* Common routines used by software and hardware TLBs emulation */ > +static inline int pte_is_valid(target_ulong pte0) > +{ > + return pte0 & 0x80000000 ? 1 : 0; > +} > + > +static inline void pte_invalidate(target_ulong *pte0) > +{ > + *pte0 &= ~0x80000000; > +} > + > +#define PTE_PTEM_MASK 0x7FFFFFBF > +#define PTE_CHECK_MASK (TARGET_PAGE_MASK | 0x7B) > + > #endif /* PPC_INTERNAL_H */ > diff --git a/target/ppc/meson.build b/target/ppc/meson.build > index a6a53a8d5c..a54445d0da 100644 > --- a/target/ppc/meson.build > +++ b/target/ppc/meson.build > @@ -28,10 +28,12 @@ ppc_softmmu_ss.add(files( > 'arch_dump.c', > 'machine.c', > 'mmu-hash32.c', > - 'mmu_helper.c', > + 'mmu_common.c', > 'monitor.c', > )) > -ppc_softmmu_ss.add(when: 'CONFIG_TCG', if_false: files( > +ppc_softmmu_ss.add(when: 'CONFIG_TCG', if_true: files( > + 'mmu_helper.c', > +), if_false: files( > 'tcg-stub.c' > )) > > diff --git a/target/ppc/mmu_common.c b/target/ppc/mmu_common.c > new file mode 100644 > index 0000000000..d95399d67f > --- /dev/null > +++ b/target/ppc/mmu_common.c > @@ -0,0 +1,1606 @@ > +/* > + * PowerPC CPU initialization for qemu. > + * > + * Copyright (C) 2021 Instituto de Pesquisas Eldorado (eldorado.org.br) > + * > + * 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 2.1 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 "qemu/osdep.h" > +#include "qemu/units.h" > +#include "cpu.h" > +#include "sysemu/kvm.h" > +#include "kvm_ppc.h" > +#include "mmu-hash64.h" > +#include "mmu-hash32.h" > +#include "exec/exec-all.h" > +#include "exec/log.h" > +#include "helper_regs.h" > +#include "qemu/error-report.h" > +#include "qemu/main-loop.h" > +#include "qemu/qemu-print.h" > +#include "internal.h" > +#include "mmu-book3s-v3.h" > +#include "mmu-radix64.h" > + > +/* #define DEBUG_MMU */ > +/* #define DEBUG_BATS */ > +/* #define DEBUG_SOFTWARE_TLB */ > +/* #define DUMP_PAGE_TABLES */ > +/* #define FLUSH_ALL_TLBS */ > + > +#ifdef DEBUG_MMU > +# define LOG_MMU_STATE(cpu) log_cpu_state_mask(CPU_LOG_MMU, (cpu), 0) > +#else > +# define LOG_MMU_STATE(cpu) do { } while (0) > +#endif > + > +#ifdef DEBUG_SOFTWARE_TLB > +# define LOG_SWTLB(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__) > +#else > +# define LOG_SWTLB(...) do { } while (0) > +#endif > + > +#ifdef DEBUG_BATS > +# define LOG_BATS(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__) > +#else > +# define LOG_BATS(...) do { } while (0) > +#endif > + > +/*****************************************************************************/ > +/* PowerPC MMU emulation */ > + > +static int pp_check(int key, int pp, int nx) > +{ > + int access; > + > + /* Compute access rights */ > + access = 0; > + if (key == 0) { > + switch (pp) { > + case 0x0: > + case 0x1: > + case 0x2: > + access |= PAGE_WRITE; > + /* fall through */ > + case 0x3: > + access |= PAGE_READ; > + break; > + } > + } else { > + switch (pp) { > + case 0x0: > + access = 0; > + break; > + case 0x1: > + case 0x3: > + access = PAGE_READ; > + break; > + case 0x2: > + access = PAGE_READ | PAGE_WRITE; > + break; > + } > + } > + if (nx == 0) { > + access |= PAGE_EXEC; > + } > + > + return access; > +} > + > +static int check_prot(int prot, MMUAccessType access_type) > +{ > + return prot & prot_for_access_type(access_type) ? 0 : -2; > +} > + > +static int pte_update_flags(mmu_ctx_t *ctx, target_ulong *pte1p, > + int ret, MMUAccessType access_type) > +{ > + int store = 0; > + > + /* Update page flags */ > + if (!(*pte1p & 0x00000100)) { > + /* Update accessed flag */ > + *pte1p |= 0x00000100; > + store = 1; > + } > + if (!(*pte1p & 0x00000080)) { > + if (access_type == MMU_DATA_STORE && ret == 0) { > + /* Update changed flag */ > + *pte1p |= 0x00000080; > + store = 1; > + } else { > + /* Force page fault for first write access */ > + ctx->prot &= ~PAGE_WRITE; > + } > + } > + > + return store; > +} > + > +static int ppc6xx_tlb_pte_check(mmu_ctx_t *ctx, target_ulong pte0, > + target_ulong pte1, int h, > + MMUAccessType access_type) > +{ > + target_ulong ptem, mmask; > + int access, ret, pteh, ptev, pp; > + > + ret = -1; > + /* Check validity and table match */ > + ptev = pte_is_valid(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_mask(CPU_LOG_MMU, "Bad RPN/WIMG/PP\n"); > + return -3; > + } > + } > + /* Compute access rights */ > + access = pp_check(ctx->key, pp, ctx->nx); > + /* Keep the matching PTE information */ > + ctx->raddr = pte1; > + ctx->prot = access; > + ret = check_prot(ctx->prot, access_type); > + if (ret == 0) { > + /* Access granted */ > + qemu_log_mask(CPU_LOG_MMU, "PTE access granted !\n"); > + } else { > + /* Access right violation */ > + qemu_log_mask(CPU_LOG_MMU, "PTE access rejected\n"); > + } > + } > + } > + > + return ret; > +} > + > +static int ppc6xx_tlb_check(CPUPPCState *env, mmu_ctx_t *ctx, > + target_ulong eaddr, MMUAccessType access_type) > +{ > + ppc6xx_tlb_t *tlb; > + int nr, best, way; > + int ret; > + > + best = -1; > + ret = -1; /* No TLB found */ > + for (way = 0; way < env->nb_ways; way++) { > + nr = ppc6xx_tlb_getnum(env, eaddr, way, access_type == MMU_INST_FETCH); > + tlb = &env->tlb.tlb6[nr]; > + /* This test "emulates" the PTE index match for hardware TLBs */ > + if ((eaddr & TARGET_PAGE_MASK) != tlb->EPN) { > + LOG_SWTLB("TLB %d/%d %s [" TARGET_FMT_lx " " TARGET_FMT_lx > + "] <> " TARGET_FMT_lx "\n", nr, env->nb_tlb, > + pte_is_valid(tlb->pte0) ? "valid" : "inval", > + tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE, eaddr); > + continue; > + } > + LOG_SWTLB("TLB %d/%d %s " TARGET_FMT_lx " <> " TARGET_FMT_lx " " > + TARGET_FMT_lx " %c %c\n", nr, env->nb_tlb, > + pte_is_valid(tlb->pte0) ? "valid" : "inval", > + tlb->EPN, eaddr, tlb->pte1, > + access_type == MMU_DATA_STORE ? 'S' : 'L', > + access_type == MMU_INST_FETCH ? 'I' : 'D'); > + switch (ppc6xx_tlb_pte_check(ctx, tlb->pte0, tlb->pte1, > + 0, access_type)) { > + case -3: > + /* TLB inconsistency */ > + return -1; > + case -2: > + /* Access violation */ > + ret = -2; > + best = nr; > + break; > + case -1: > + default: > + /* No match */ > + break; > + case 0: > + /* access granted */ > + /* > + * XXX: we should go on looping to check all TLBs > + * consistency but we can speed-up the whole thing as > + * the result would be undefined if TLBs are not > + * consistent. > + */ > + ret = 0; > + best = nr; > + goto done; > + } > + } > + if (best != -1) { > + done: > + LOG_SWTLB("found TLB at addr " TARGET_FMT_plx " prot=%01x ret=%d\n", > + ctx->raddr & TARGET_PAGE_MASK, ctx->prot, ret); > + /* Update page flags */ > + pte_update_flags(ctx, &env->tlb.tlb6[best].pte1, ret, access_type); > + } > + > + return ret; > +} > + > +/* Perform BAT hit & translation */ > +static inline void bat_size_prot(CPUPPCState *env, target_ulong *blp, > + int *validp, int *protp, target_ulong *BATu, > + target_ulong *BATl) > +{ > + target_ulong bl; > + int pp, valid, prot; > + > + bl = (*BATu & 0x00001FFC) << 15; > + valid = 0; > + prot = 0; > + if (((msr_pr == 0) && (*BATu & 0x00000002)) || > + ((msr_pr != 0) && (*BATu & 0x00000001))) { > + valid = 1; > + pp = *BATl & 0x00000003; > + if (pp != 0) { > + prot = PAGE_READ | PAGE_EXEC; > + if (pp == 0x2) { > + prot |= PAGE_WRITE; > + } > + } > + } > + *blp = bl; > + *validp = valid; > + *protp = prot; > +} > + > +static int get_bat_6xx_tlb(CPUPPCState *env, mmu_ctx_t *ctx, > + target_ulong virtual, MMUAccessType access_type) > +{ > + target_ulong *BATlt, *BATut, *BATu, *BATl; > + target_ulong BEPIl, BEPIu, bl; > + int i, valid, prot; > + int ret = -1; > + bool ifetch = access_type == MMU_INST_FETCH; > + > + LOG_BATS("%s: %cBAT v " TARGET_FMT_lx "\n", __func__, > + ifetch ? 'I' : 'D', virtual); > + if (ifetch) { > + BATlt = env->IBAT[1]; > + BATut = env->IBAT[0]; > + } else { > + BATlt = env->DBAT[1]; > + BATut = env->DBAT[0]; > + } > + for (i = 0; i < env->nb_BATs; i++) { > + BATu = &BATut[i]; > + BATl = &BATlt[i]; > + BEPIu = *BATu & 0xF0000000; > + BEPIl = *BATu & 0x0FFE0000; > + bat_size_prot(env, &bl, &valid, &prot, BATu, BATl); > + LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx > + " BATl " TARGET_FMT_lx "\n", __func__, > + ifetch ? 'I' : 'D', i, virtual, *BATu, *BATl); > + if ((virtual & 0xF0000000) == BEPIu && > + ((virtual & 0x0FFE0000) & ~bl) == BEPIl) { > + /* BAT matches */ > + if (valid != 0) { > + /* Get physical address */ > + ctx->raddr = (*BATl & 0xF0000000) | > + ((virtual & 0x0FFE0000 & bl) | (*BATl & 0x0FFE0000)) | > + (virtual & 0x0001F000); > + /* Compute access rights */ > + ctx->prot = prot; > + ret = check_prot(ctx->prot, access_type); > + if (ret == 0) { > + LOG_BATS("BAT %d match: r " TARGET_FMT_plx " prot=%c%c\n", > + i, ctx->raddr, ctx->prot & PAGE_READ ? 'R' : '-', > + ctx->prot & PAGE_WRITE ? 'W' : '-'); > + } > + break; > + } > + } > + } > + if (ret < 0) { > +#if defined(DEBUG_BATS) > + if (qemu_log_enabled()) { > + LOG_BATS("no BAT match for " TARGET_FMT_lx ":\n", virtual); > + for (i = 0; i < 4; i++) { > + BATu = &BATut[i]; > + BATl = &BATlt[i]; > + BEPIu = *BATu & 0xF0000000; > + BEPIl = *BATu & 0x0FFE0000; > + bl = (*BATu & 0x00001FFC) << 15; > + LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx > + " BATl " TARGET_FMT_lx "\n\t" TARGET_FMT_lx " " > + TARGET_FMT_lx " " TARGET_FMT_lx "\n", > + __func__, ifetch ? 'I' : 'D', i, virtual, > + *BATu, *BATl, BEPIu, BEPIl, bl); > + } > + } > +#endif > + } > + /* No hit */ > + return ret; > +} > + > +/* Perform segment based translation */ > +static int get_segment_6xx_tlb(CPUPPCState *env, mmu_ctx_t *ctx, > + target_ulong eaddr, MMUAccessType access_type, > + int type) > +{ > + PowerPCCPU *cpu = env_archcpu(env); > + hwaddr hash; > + target_ulong vsid; > + int ds, pr, target_page_bits; > + int ret; > + target_ulong sr, pgidx; > + > + pr = msr_pr; > + ctx->eaddr = eaddr; > + > + sr = env->sr[eaddr >> 28]; > + ctx->key = (((sr & 0x20000000) && (pr != 0)) || > + ((sr & 0x40000000) && (pr == 0))) ? 1 : 0; > + ds = sr & 0x80000000 ? 1 : 0; > + ctx->nx = sr & 0x10000000 ? 1 : 0; > + vsid = sr & 0x00FFFFFF; > + target_page_bits = TARGET_PAGE_BITS; > + qemu_log_mask(CPU_LOG_MMU, > + "Check segment v=" TARGET_FMT_lx " %d " TARGET_FMT_lx > + " nip=" TARGET_FMT_lx " lr=" TARGET_FMT_lx > + " ir=%d dr=%d pr=%d %d t=%d\n", > + eaddr, (int)(eaddr >> 28), sr, env->nip, env->lr, (int)msr_ir, > + (int)msr_dr, pr != 0 ? 1 : 0, access_type == MMU_DATA_STORE, type); > + pgidx = (eaddr & ~SEGMENT_MASK_256M) >> target_page_bits; > + hash = vsid ^ pgidx; > + ctx->ptem = (vsid << 7) | (pgidx >> 10); > + > + qemu_log_mask(CPU_LOG_MMU, > + "pte segment: key=%d ds %d nx %d vsid " TARGET_FMT_lx "\n", > + ctx->key, ds, ctx->nx, vsid); > + ret = -1; > + if (!ds) { > + /* Check if instruction fetch is allowed, if needed */ > + if (type != ACCESS_CODE || ctx->nx == 0) { > + /* Page address translation */ > + qemu_log_mask(CPU_LOG_MMU, "htab_base " TARGET_FMT_plx > + " htab_mask " TARGET_FMT_plx > + " hash " TARGET_FMT_plx "\n", > + ppc_hash32_hpt_base(cpu), ppc_hash32_hpt_mask(cpu), hash); > + ctx->hash[0] = hash; > + ctx->hash[1] = ~hash; > + > + /* Initialize real address with an invalid value */ > + ctx->raddr = (hwaddr)-1ULL; > + /* Software TLB search */ > + ret = ppc6xx_tlb_check(env, ctx, eaddr, access_type); > +#if defined(DUMP_PAGE_TABLES) > + if (qemu_loglevel_mask(CPU_LOG_MMU)) { > + CPUState *cs = env_cpu(env); > + hwaddr curaddr; > + uint32_t a0, a1, a2, a3; > + > + qemu_log("Page table: " TARGET_FMT_plx " len " TARGET_FMT_plx > + "\n", ppc_hash32_hpt_base(cpu), > + ppc_hash32_hpt_mask(env) + 0x80); > + for (curaddr = ppc_hash32_hpt_base(cpu); > + curaddr < (ppc_hash32_hpt_base(cpu) > + + ppc_hash32_hpt_mask(cpu) + 0x80); > + curaddr += 16) { > + a0 = ldl_phys(cs->as, curaddr); > + a1 = ldl_phys(cs->as, curaddr + 4); > + a2 = ldl_phys(cs->as, curaddr + 8); > + a3 = ldl_phys(cs->as, curaddr + 12); > + if (a0 != 0 || a1 != 0 || a2 != 0 || a3 != 0) { > + qemu_log(TARGET_FMT_plx ": %08x %08x %08x %08x\n", > + curaddr, a0, a1, a2, a3); > + } > + } > + } > +#endif > + } else { > + qemu_log_mask(CPU_LOG_MMU, "No access allowed\n"); > + ret = -3; > + } > + } else { > + target_ulong sr; > + > + qemu_log_mask(CPU_LOG_MMU, "direct store...\n"); > + /* Direct-store segment : absolutely *BUGGY* for now */ > + > + /* > + * Direct-store implies a 32-bit MMU. > + * Check the Segment Register's bus unit ID (BUID). > + */ > + sr = env->sr[eaddr >> 28]; > + if ((sr & 0x1FF00000) >> 20 == 0x07f) { > + /* > + * Memory-forced I/O controller interface access > + * > + * If T=1 and BUID=x'07F', the 601 performs a memory > + * access to SR[28-31] LA[4-31], bypassing all protection > + * mechanisms. > + */ > + ctx->raddr = ((sr & 0xF) << 28) | (eaddr & 0x0FFFFFFF); > + ctx->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; > + return 0; > + } > + > + switch (type) { > + case ACCESS_INT: > + /* Integer load/store : only access allowed */ > + break; > + case ACCESS_CODE: > + /* No code fetch is allowed in direct-store areas */ > + return -4; > + case ACCESS_FLOAT: > + /* Floating point load/store */ > + return -4; > + case ACCESS_RES: > + /* lwarx, ldarx or srwcx. */ > + return -4; > + case ACCESS_CACHE: > + /* > + * dcba, dcbt, dcbtst, dcbf, dcbi, dcbst, dcbz, or icbi > + * > + * Should make the instruction do no-op. As it already do > + * no-op, it's quite easy :-) > + */ > + ctx->raddr = eaddr; > + return 0; > + case ACCESS_EXT: > + /* eciwx or ecowx */ > + return -4; > + default: > + qemu_log_mask(CPU_LOG_MMU, "ERROR: instruction should not need " > + "address translation\n"); > + return -4; > + } > + if ((access_type == MMU_DATA_STORE || ctx->key != 1) && > + (access_type == MMU_DATA_LOAD || ctx->key != 0)) { > + ctx->raddr = eaddr; > + ret = 2; > + } else { > + ret = -2; > + } > + } > + > + return ret; > +} > + > +/* Generic TLB check function for embedded PowerPC implementations */ > +int ppcemb_tlb_check(CPUPPCState *env, ppcemb_tlb_t *tlb, > + hwaddr *raddrp, > + target_ulong address, uint32_t pid, int ext, > + int i) > +{ > + target_ulong mask; > + > + /* Check valid flag */ > + if (!(tlb->prot & PAGE_VALID)) { > + return -1; > + } > + mask = ~(tlb->size - 1); > + LOG_SWTLB("%s: TLB %d address " TARGET_FMT_lx " PID %u <=> " TARGET_FMT_lx > + " " TARGET_FMT_lx " %u %x\n", __func__, i, address, pid, tlb->EPN, > + mask, (uint32_t)tlb->PID, tlb->prot); > + /* Check PID */ > + if (tlb->PID != 0 && tlb->PID != pid) { > + return -1; > + } > + /* Check effective address */ > + if ((address & mask) != tlb->EPN) { > + return -1; > + } > + *raddrp = (tlb->RPN & mask) | (address & ~mask); > + if (ext) { > + /* Extend the physical address to 36 bits */ > + *raddrp |= (uint64_t)(tlb->RPN & 0xF) << 32; > + } > + > + return 0; > +} > + > +static int mmu40x_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, > + target_ulong address, > + MMUAccessType access_type) > +{ > + ppcemb_tlb_t *tlb; > + hwaddr raddr; > + int i, ret, zsel, zpr, pr; > + > + ret = -1; > + raddr = (hwaddr)-1ULL; > + pr = msr_pr; > + for (i = 0; i < env->nb_tlb; i++) { > + tlb = &env->tlb.tlbe[i]; > + if (ppcemb_tlb_check(env, tlb, &raddr, address, > + env->spr[SPR_40x_PID], 0, i) < 0) { > + continue; > + } > + zsel = (tlb->attr >> 4) & 0xF; > + zpr = (env->spr[SPR_40x_ZPR] >> (30 - (2 * zsel))) & 0x3; > + LOG_SWTLB("%s: TLB %d zsel %d zpr %d ty %d attr %08x\n", > + __func__, i, zsel, zpr, access_type, tlb->attr); > + /* Check execute enable bit */ > + switch (zpr) { > + case 0x2: > + if (pr != 0) { > + goto check_perms; > + } > + /* fall through */ > + case 0x3: > + /* All accesses granted */ > + ctx->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; > + ret = 0; > + break; > + case 0x0: > + if (pr != 0) { > + /* Raise Zone protection fault. */ > + env->spr[SPR_40x_ESR] = 1 << 22; > + ctx->prot = 0; > + ret = -2; > + break; > + } > + /* fall through */ > + case 0x1: > + check_perms: > + /* Check from TLB entry */ > + ctx->prot = tlb->prot; > + ret = check_prot(ctx->prot, access_type); > + if (ret == -2) { > + env->spr[SPR_40x_ESR] = 0; > + } > + break; > + } > + if (ret >= 0) { > + ctx->raddr = raddr; > + LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx > + " %d %d\n", __func__, address, ctx->raddr, ctx->prot, > + ret); > + return 0; > + } > + } > + LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx > + " %d %d\n", __func__, address, raddr, ctx->prot, ret); > + > + return ret; > +} > + > +void store_40x_sler(CPUPPCState *env, uint32_t val) > +{ > + /* XXX: TO BE FIXED */ > + if (val != 0x00000000) { > + cpu_abort(env_cpu(env), > + "Little-endian regions are not supported by now\n"); > + } > + env->spr[SPR_405_SLER] = val; > +} > + > +static int mmubooke_check_tlb(CPUPPCState *env, ppcemb_tlb_t *tlb, > + hwaddr *raddr, int *prot, target_ulong address, > + MMUAccessType access_type, int i) > +{ > + int prot2; > + > + if (ppcemb_tlb_check(env, tlb, raddr, address, > + env->spr[SPR_BOOKE_PID], > + !env->nb_pids, i) >= 0) { > + goto found_tlb; > + } > + > + if (env->spr[SPR_BOOKE_PID1] && > + ppcemb_tlb_check(env, tlb, raddr, address, > + env->spr[SPR_BOOKE_PID1], 0, i) >= 0) { > + goto found_tlb; > + } > + > + if (env->spr[SPR_BOOKE_PID2] && > + ppcemb_tlb_check(env, tlb, raddr, address, > + env->spr[SPR_BOOKE_PID2], 0, i) >= 0) { > + goto found_tlb; > + } > + > + LOG_SWTLB("%s: TLB entry not found\n", __func__); > + return -1; > + > +found_tlb: > + > + if (msr_pr != 0) { > + prot2 = tlb->prot & 0xF; > + } else { > + prot2 = (tlb->prot >> 4) & 0xF; > + } > + > + /* Check the address space */ > + if ((access_type == MMU_INST_FETCH ? msr_ir : msr_dr) != (tlb->attr & 1)) { > + LOG_SWTLB("%s: AS doesn't match\n", __func__); > + return -1; > + } > + > + *prot = prot2; > + if (prot2 & prot_for_access_type(access_type)) { > + LOG_SWTLB("%s: good TLB!\n", __func__); > + return 0; > + } > + > + LOG_SWTLB("%s: no prot match: %x\n", __func__, prot2); > + return access_type == MMU_INST_FETCH ? -3 : -2; > +} > + > +static int mmubooke_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, > + target_ulong address, > + MMUAccessType access_type) > +{ > + ppcemb_tlb_t *tlb; > + hwaddr raddr; > + int i, ret; > + > + ret = -1; > + raddr = (hwaddr)-1ULL; > + for (i = 0; i < env->nb_tlb; i++) { > + tlb = &env->tlb.tlbe[i]; > + ret = mmubooke_check_tlb(env, tlb, &raddr, &ctx->prot, address, > + access_type, i); > + if (ret != -1) { > + break; > + } > + } > + > + if (ret >= 0) { > + ctx->raddr = raddr; > + LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx > + " %d %d\n", __func__, address, ctx->raddr, ctx->prot, > + ret); > + } else { > + LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx > + " %d %d\n", __func__, address, raddr, ctx->prot, ret); > + } > + > + return ret; > +} > + > +hwaddr booke206_tlb_to_page_size(CPUPPCState *env, > + ppcmas_tlb_t *tlb) > +{ > + int tlbm_size; > + > + tlbm_size = (tlb->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT; > + > + return 1024ULL << tlbm_size; > +} > + > +/* TLB check function for MAS based SoftTLBs */ > +int ppcmas_tlb_check(CPUPPCState *env, ppcmas_tlb_t *tlb, > + hwaddr *raddrp, target_ulong address, > + uint32_t pid) > +{ > + hwaddr mask; > + uint32_t tlb_pid; > + > + if (!msr_cm) { > + /* In 32bit mode we can only address 32bit EAs */ > + address = (uint32_t)address; > + } > + > + /* Check valid flag */ > + if (!(tlb->mas1 & MAS1_VALID)) { > + return -1; > + } > + > + mask = ~(booke206_tlb_to_page_size(env, tlb) - 1); > + LOG_SWTLB("%s: TLB ADDR=0x" TARGET_FMT_lx " PID=0x%x MAS1=0x%x MAS2=0x%" > + PRIx64 " mask=0x%" HWADDR_PRIx " MAS7_3=0x%" PRIx64 " MAS8=0x%" > + PRIx32 "\n", __func__, address, pid, tlb->mas1, tlb->mas2, mask, > + tlb->mas7_3, tlb->mas8); > + > + /* Check PID */ > + tlb_pid = (tlb->mas1 & MAS1_TID_MASK) >> MAS1_TID_SHIFT; > + if (tlb_pid != 0 && tlb_pid != pid) { > + return -1; > + } > + > + /* Check effective address */ > + if ((address & mask) != (tlb->mas2 & MAS2_EPN_MASK)) { > + return -1; > + } > + > + if (raddrp) { > + *raddrp = (tlb->mas7_3 & mask) | (address & ~mask); > + } > + > + return 0; > +} > + > +static bool is_epid_mmu(int mmu_idx) > +{ > + return mmu_idx == PPC_TLB_EPID_STORE || mmu_idx == PPC_TLB_EPID_LOAD; > +} > + > +static uint32_t mmubooke206_esr(int mmu_idx, MMUAccessType access_type) > +{ > + uint32_t esr = 0; > + if (access_type == MMU_DATA_STORE) { > + esr |= ESR_ST; > + } > + if (is_epid_mmu(mmu_idx)) { > + esr |= ESR_EPID; > + } > + return esr; > +} > + > +/* > + * Get EPID register given the mmu_idx. If this is regular load, > + * construct the EPID access bits from current processor state > + * > + * Get the effective AS and PR bits and the PID. The PID is returned > + * only if EPID load is requested, otherwise the caller must detect > + * the correct EPID. Return true if valid EPID is returned. > + */ > +static bool mmubooke206_get_as(CPUPPCState *env, > + int mmu_idx, uint32_t *epid_out, > + bool *as_out, bool *pr_out) > +{ > + if (is_epid_mmu(mmu_idx)) { > + uint32_t epidr; > + if (mmu_idx == PPC_TLB_EPID_STORE) { > + epidr = env->spr[SPR_BOOKE_EPSC]; > + } else { > + epidr = env->spr[SPR_BOOKE_EPLC]; > + } > + *epid_out = (epidr & EPID_EPID) >> EPID_EPID_SHIFT; > + *as_out = !!(epidr & EPID_EAS); > + *pr_out = !!(epidr & EPID_EPR); > + return true; > + } else { > + *as_out = msr_ds; > + *pr_out = msr_pr; > + return false; > + } > +} > + > +/* Check if the tlb found by hashing really matches */ > +static int mmubooke206_check_tlb(CPUPPCState *env, ppcmas_tlb_t *tlb, > + hwaddr *raddr, int *prot, > + target_ulong address, > + MMUAccessType access_type, int mmu_idx) > +{ > + int prot2 = 0; > + uint32_t epid; > + bool as, pr; > + bool use_epid = mmubooke206_get_as(env, mmu_idx, &epid, &as, &pr); > + > + if (!use_epid) { > + if (ppcmas_tlb_check(env, tlb, raddr, address, > + env->spr[SPR_BOOKE_PID]) >= 0) { > + goto found_tlb; > + } > + > + if (env->spr[SPR_BOOKE_PID1] && > + ppcmas_tlb_check(env, tlb, raddr, address, > + env->spr[SPR_BOOKE_PID1]) >= 0) { > + goto found_tlb; > + } > + > + if (env->spr[SPR_BOOKE_PID2] && > + ppcmas_tlb_check(env, tlb, raddr, address, > + env->spr[SPR_BOOKE_PID2]) >= 0) { > + goto found_tlb; > + } > + } else { > + if (ppcmas_tlb_check(env, tlb, raddr, address, epid) >= 0) { > + goto found_tlb; > + } > + } > + > + LOG_SWTLB("%s: TLB entry not found\n", __func__); > + return -1; > + > +found_tlb: > + > + if (pr) { > + if (tlb->mas7_3 & MAS3_UR) { > + prot2 |= PAGE_READ; > + } > + if (tlb->mas7_3 & MAS3_UW) { > + prot2 |= PAGE_WRITE; > + } > + if (tlb->mas7_3 & MAS3_UX) { > + prot2 |= PAGE_EXEC; > + } > + } else { > + if (tlb->mas7_3 & MAS3_SR) { > + prot2 |= PAGE_READ; > + } > + if (tlb->mas7_3 & MAS3_SW) { > + prot2 |= PAGE_WRITE; > + } > + if (tlb->mas7_3 & MAS3_SX) { > + prot2 |= PAGE_EXEC; > + } > + } > + > + /* Check the address space and permissions */ > + if (access_type == MMU_INST_FETCH) { > + /* There is no way to fetch code using epid load */ > + assert(!use_epid); > + as = msr_ir; > + } > + > + if (as != ((tlb->mas1 & MAS1_TS) >> MAS1_TS_SHIFT)) { > + LOG_SWTLB("%s: AS doesn't match\n", __func__); > + return -1; > + } > + > + *prot = prot2; > + if (prot2 & prot_for_access_type(access_type)) { > + LOG_SWTLB("%s: good TLB!\n", __func__); > + return 0; > + } > + > + LOG_SWTLB("%s: no prot match: %x\n", __func__, prot2); > + return access_type == MMU_INST_FETCH ? -3 : -2; > +} > + > +static int mmubooke206_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, > + target_ulong address, > + MMUAccessType access_type, > + int mmu_idx) > +{ > + ppcmas_tlb_t *tlb; > + hwaddr raddr; > + int i, j, ret; > + > + ret = -1; > + raddr = (hwaddr)-1ULL; > + > + for (i = 0; i < BOOKE206_MAX_TLBN; i++) { > + int ways = booke206_tlb_ways(env, i); > + > + for (j = 0; j < ways; j++) { > + tlb = booke206_get_tlbm(env, i, address, j); > + if (!tlb) { > + continue; > + } > + ret = mmubooke206_check_tlb(env, tlb, &raddr, &ctx->prot, address, > + access_type, mmu_idx); > + if (ret != -1) { > + goto found_tlb; > + } > + } > + } > + > +found_tlb: > + > + if (ret >= 0) { > + ctx->raddr = raddr; > + LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx > + " %d %d\n", __func__, address, ctx->raddr, ctx->prot, > + ret); > + } else { > + LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx > + " %d %d\n", __func__, address, raddr, ctx->prot, ret); > + } > + > + return ret; > +} > + > +static const char *book3e_tsize_to_str[32] = { > + "1K", "2K", "4K", "8K", "16K", "32K", "64K", "128K", "256K", "512K", > + "1M", "2M", "4M", "8M", "16M", "32M", "64M", "128M", "256M", "512M", > + "1G", "2G", "4G", "8G", "16G", "32G", "64G", "128G", "256G", "512G", > + "1T", "2T" > +}; > + > +static void mmubooke_dump_mmu(CPUPPCState *env) > +{ > + ppcemb_tlb_t *entry; > + int i; > + > + if (kvm_enabled() && !env->kvm_sw_tlb) { > + qemu_printf("Cannot access KVM TLB\n"); > + return; > + } > + > + qemu_printf("\nTLB:\n"); > + qemu_printf("Effective Physical Size PID Prot " > + "Attr\n"); > + > + entry = &env->tlb.tlbe[0]; > + for (i = 0; i < env->nb_tlb; i++, entry++) { > + hwaddr ea, pa; > + target_ulong mask; > + uint64_t size = (uint64_t)entry->size; > + char size_buf[20]; > + > + /* Check valid flag */ > + if (!(entry->prot & PAGE_VALID)) { > + continue; > + } > + > + mask = ~(entry->size - 1); > + ea = entry->EPN & mask; > + pa = entry->RPN & mask; > + /* Extend the physical address to 36 bits */ > + pa |= (hwaddr)(entry->RPN & 0xF) << 32; > + if (size >= 1 * MiB) { > + snprintf(size_buf, sizeof(size_buf), "%3" PRId64 "M", size / MiB); > + } else { > + snprintf(size_buf, sizeof(size_buf), "%3" PRId64 "k", size / KiB); > + } > + qemu_printf("0x%016" PRIx64 " 0x%016" PRIx64 " %s %-5u %08x %08x\n", > + (uint64_t)ea, (uint64_t)pa, size_buf, (uint32_t)entry->PID, > + entry->prot, entry->attr); > + } > + > +} > + > +static void mmubooke206_dump_one_tlb(CPUPPCState *env, int tlbn, int offset, > + int tlbsize) > +{ > + ppcmas_tlb_t *entry; > + int i; > + > + qemu_printf("\nTLB%d:\n", tlbn); > + qemu_printf("Effective Physical Size TID TS SRWX" > + " URWX WIMGE U0123\n"); > + > + entry = &env->tlb.tlbm[offset]; > + for (i = 0; i < tlbsize; i++, entry++) { > + hwaddr ea, pa, size; > + int tsize; > + > + if (!(entry->mas1 & MAS1_VALID)) { > + continue; > + } > + > + tsize = (entry->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT; > + size = 1024ULL << tsize; > + ea = entry->mas2 & ~(size - 1); > + pa = entry->mas7_3 & ~(size - 1); > + > + qemu_printf("0x%016" PRIx64 " 0x%016" PRIx64 " %4s %-5u %1u S%c%c%c" > + "U%c%c%c %c%c%c%c%c U%c%c%c%c\n", > + (uint64_t)ea, (uint64_t)pa, > + book3e_tsize_to_str[tsize], > + (entry->mas1 & MAS1_TID_MASK) >> MAS1_TID_SHIFT, > + (entry->mas1 & MAS1_TS) >> MAS1_TS_SHIFT, > + entry->mas7_3 & MAS3_SR ? 'R' : '-', > + entry->mas7_3 & MAS3_SW ? 'W' : '-', > + entry->mas7_3 & MAS3_SX ? 'X' : '-', > + entry->mas7_3 & MAS3_UR ? 'R' : '-', > + entry->mas7_3 & MAS3_UW ? 'W' : '-', > + entry->mas7_3 & MAS3_UX ? 'X' : '-', > + entry->mas2 & MAS2_W ? 'W' : '-', > + entry->mas2 & MAS2_I ? 'I' : '-', > + entry->mas2 & MAS2_M ? 'M' : '-', > + entry->mas2 & MAS2_G ? 'G' : '-', > + entry->mas2 & MAS2_E ? 'E' : '-', > + entry->mas7_3 & MAS3_U0 ? '0' : '-', > + entry->mas7_3 & MAS3_U1 ? '1' : '-', > + entry->mas7_3 & MAS3_U2 ? '2' : '-', > + entry->mas7_3 & MAS3_U3 ? '3' : '-'); > + } > +} > + > +static void mmubooke206_dump_mmu(CPUPPCState *env) > +{ > + int offset = 0; > + int i; > + > + if (kvm_enabled() && !env->kvm_sw_tlb) { > + qemu_printf("Cannot access KVM TLB\n"); > + return; > + } > + > + for (i = 0; i < BOOKE206_MAX_TLBN; i++) { > + int size = booke206_tlb_size(env, i); > + > + if (size == 0) { > + continue; > + } > + > + mmubooke206_dump_one_tlb(env, i, offset, size); > + offset += size; > + } > +} > + > +static void mmu6xx_dump_BATs(CPUPPCState *env, int type) > +{ > + target_ulong *BATlt, *BATut, *BATu, *BATl; > + target_ulong BEPIl, BEPIu, bl; > + int i; > + > + switch (type) { > + case ACCESS_CODE: > + BATlt = env->IBAT[1]; > + BATut = env->IBAT[0]; > + break; > + default: > + BATlt = env->DBAT[1]; > + BATut = env->DBAT[0]; > + break; > + } > + > + for (i = 0; i < env->nb_BATs; i++) { > + BATu = &BATut[i]; > + BATl = &BATlt[i]; > + BEPIu = *BATu & 0xF0000000; > + BEPIl = *BATu & 0x0FFE0000; > + bl = (*BATu & 0x00001FFC) << 15; > + qemu_printf("%s BAT%d BATu " TARGET_FMT_lx > + " BATl " TARGET_FMT_lx "\n\t" TARGET_FMT_lx " " > + TARGET_FMT_lx " " TARGET_FMT_lx "\n", > + type == ACCESS_CODE ? "code" : "data", i, > + *BATu, *BATl, BEPIu, BEPIl, bl); > + } > +} > + > +static void mmu6xx_dump_mmu(CPUPPCState *env) > +{ > + PowerPCCPU *cpu = env_archcpu(env); > + ppc6xx_tlb_t *tlb; > + target_ulong sr; > + int type, way, entry, i; > + > + qemu_printf("HTAB base = 0x%"HWADDR_PRIx"\n", ppc_hash32_hpt_base(cpu)); > + qemu_printf("HTAB mask = 0x%"HWADDR_PRIx"\n", ppc_hash32_hpt_mask(cpu)); > + > + qemu_printf("\nSegment registers:\n"); > + for (i = 0; i < 32; i++) { > + sr = env->sr[i]; > + if (sr & 0x80000000) { > + qemu_printf("%02d T=%d Ks=%d Kp=%d BUID=0x%03x " > + "CNTLR_SPEC=0x%05x\n", i, > + sr & 0x80000000 ? 1 : 0, sr & 0x40000000 ? 1 : 0, > + sr & 0x20000000 ? 1 : 0, (uint32_t)((sr >> 20) & 0x1FF), > + (uint32_t)(sr & 0xFFFFF)); > + } else { > + qemu_printf("%02d T=%d Ks=%d Kp=%d N=%d VSID=0x%06x\n", i, > + sr & 0x80000000 ? 1 : 0, sr & 0x40000000 ? 1 : 0, > + sr & 0x20000000 ? 1 : 0, sr & 0x10000000 ? 1 : 0, > + (uint32_t)(sr & 0x00FFFFFF)); > + } > + } > + > + qemu_printf("\nBATs:\n"); > + mmu6xx_dump_BATs(env, ACCESS_INT); > + mmu6xx_dump_BATs(env, ACCESS_CODE); > + > + if (env->id_tlbs != 1) { > + qemu_printf("ERROR: 6xx MMU should have separated TLB" > + " for code and data\n"); > + } > + > + qemu_printf("\nTLBs [EPN EPN + SIZE]\n"); > + > + for (type = 0; type < 2; type++) { > + for (way = 0; way < env->nb_ways; way++) { > + for (entry = env->nb_tlb * type + env->tlb_per_way * way; > + entry < (env->nb_tlb * type + env->tlb_per_way * (way + 1)); > + entry++) { > + > + tlb = &env->tlb.tlb6[entry]; > + qemu_printf("%s TLB %02d/%02d way:%d %s [" > + TARGET_FMT_lx " " TARGET_FMT_lx "]\n", > + type ? "code" : "data", entry % env->nb_tlb, > + env->nb_tlb, way, > + pte_is_valid(tlb->pte0) ? "valid" : "inval", > + tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE); > + } > + } > + } > +} > + > +void dump_mmu(CPUPPCState *env) > +{ > + switch (env->mmu_model) { > + case POWERPC_MMU_BOOKE: > + mmubooke_dump_mmu(env); > + break; > + case POWERPC_MMU_BOOKE206: > + mmubooke206_dump_mmu(env); > + break; > + case POWERPC_MMU_SOFT_6xx: > + case POWERPC_MMU_SOFT_74xx: > + mmu6xx_dump_mmu(env); > + break; > +#if defined(TARGET_PPC64) > + case POWERPC_MMU_64B: > + case POWERPC_MMU_2_03: > + case POWERPC_MMU_2_06: > + case POWERPC_MMU_2_07: > + dump_slb(env_archcpu(env)); > + break; > + case POWERPC_MMU_3_00: > + if (ppc64_v3_radix(env_archcpu(env))) { > + qemu_log_mask(LOG_UNIMP, "%s: the PPC64 MMU is unsupported\n", > + __func__); > + } else { > + dump_slb(env_archcpu(env)); > + } > + break; > +#endif > + default: > + qemu_log_mask(LOG_UNIMP, "%s: unimplemented\n", __func__); > + } > +} > + > +static int check_physical(CPUPPCState *env, mmu_ctx_t *ctx, target_ulong eaddr, > + MMUAccessType access_type) > +{ > + int in_plb, ret; > + > + ctx->raddr = eaddr; > + ctx->prot = PAGE_READ | PAGE_EXEC; > + ret = 0; > + switch (env->mmu_model) { > + case POWERPC_MMU_SOFT_6xx: > + case POWERPC_MMU_SOFT_74xx: > + case POWERPC_MMU_SOFT_4xx: > + case POWERPC_MMU_REAL: > + case POWERPC_MMU_BOOKE: > + ctx->prot |= PAGE_WRITE; > + break; > + > + case POWERPC_MMU_SOFT_4xx_Z: > + if (unlikely(msr_pe != 0)) { > + /* > + * 403 family add some particular protections, using > + * PBL/PBU registers for accesses with no translation. > + */ > + in_plb = > + /* Check PLB validity */ > + (env->pb[0] < env->pb[1] && > + /* and address in plb area */ > + eaddr >= env->pb[0] && eaddr < env->pb[1]) || > + (env->pb[2] < env->pb[3] && > + eaddr >= env->pb[2] && eaddr < env->pb[3]) ? 1 : 0; > + if (in_plb ^ msr_px) { > + /* Access in protected area */ > + if (access_type == MMU_DATA_STORE) { > + /* Access is not allowed */ > + ret = -2; > + } > + } else { > + /* Read-write access is allowed */ > + ctx->prot |= PAGE_WRITE; > + } > + } > + break; > + > + default: > + /* Caller's checks mean we should never get here for other models */ > + abort(); > + return -1; > + } > + > + return ret; > +} > + > +int get_physical_address_wtlb(CPUPPCState *env, mmu_ctx_t *ctx, > + target_ulong eaddr, > + MMUAccessType access_type, int type, > + int mmu_idx) > +{ > + int ret = -1; > + bool real_mode = (type == ACCESS_CODE && msr_ir == 0) > + || (type != ACCESS_CODE && msr_dr == 0); > + > + switch (env->mmu_model) { > + case POWERPC_MMU_SOFT_6xx: > + case POWERPC_MMU_SOFT_74xx: > + if (real_mode) { > + ret = check_physical(env, ctx, eaddr, access_type); > + } else { > + /* Try to find a BAT */ > + if (env->nb_BATs != 0) { > + ret = get_bat_6xx_tlb(env, ctx, eaddr, access_type); > + } > + if (ret < 0) { > + /* We didn't match any BAT entry or don't have BATs */ > + ret = get_segment_6xx_tlb(env, ctx, eaddr, access_type, type); > + } > + } > + break; > + > + case POWERPC_MMU_SOFT_4xx: > + case POWERPC_MMU_SOFT_4xx_Z: > + if (real_mode) { > + ret = check_physical(env, ctx, eaddr, access_type); > + } else { > + ret = mmu40x_get_physical_address(env, ctx, eaddr, access_type); > + } > + break; > + case POWERPC_MMU_BOOKE: > + ret = mmubooke_get_physical_address(env, ctx, eaddr, access_type); > + break; > + case POWERPC_MMU_BOOKE206: > + ret = mmubooke206_get_physical_address(env, ctx, eaddr, access_type, > + mmu_idx); > + break; > + case POWERPC_MMU_MPC8xx: > + /* XXX: TODO */ > + cpu_abort(env_cpu(env), "MPC8xx MMU model is not implemented\n"); > + break; > + case POWERPC_MMU_REAL: > + if (real_mode) { > + ret = check_physical(env, ctx, eaddr, access_type); > + } else { > + cpu_abort(env_cpu(env), > + "PowerPC in real mode do not do any translation\n"); > + } > + return -1; > + default: > + cpu_abort(env_cpu(env), "Unknown or invalid MMU model\n"); > + return -1; > + } > + > + return ret; > +} > + > +int get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, > + target_ulong eaddr, MMUAccessType access_type, > + int type) > +{ > + return get_physical_address_wtlb(env, ctx, eaddr, access_type, type, 0); > +} > + > +hwaddr ppc_cpu_get_phys_page_debug(CPUState *cs, vaddr addr) > +{ > + PowerPCCPU *cpu = POWERPC_CPU(cs); > + CPUPPCState *env = &cpu->env; > + mmu_ctx_t ctx; > + > + switch (env->mmu_model) { > +#if defined(TARGET_PPC64) > + case POWERPC_MMU_64B: > + case POWERPC_MMU_2_03: > + case POWERPC_MMU_2_06: > + case POWERPC_MMU_2_07: > + return ppc_hash64_get_phys_page_debug(cpu, addr); > + case POWERPC_MMU_3_00: > + return ppc64_v3_get_phys_page_debug(cpu, addr); > +#endif > + > + case POWERPC_MMU_32B: > + case POWERPC_MMU_601: > + return ppc_hash32_get_phys_page_debug(cpu, addr); > + > + default: > + ; > + } > + > + if (unlikely(get_physical_address(env, &ctx, addr, MMU_DATA_LOAD, > + ACCESS_INT) != 0)) { > + > + /* > + * Some MMUs have separate TLBs for code and data. If we only > + * try an ACCESS_INT, we may not be able to read instructions > + * mapped by code TLBs, so we also try a ACCESS_CODE. > + */ > + if (unlikely(get_physical_address(env, &ctx, addr, MMU_INST_FETCH, > + ACCESS_CODE) != 0)) { > + return -1; > + } > + } > + > + return ctx.raddr & TARGET_PAGE_MASK; > +} > + > +static void booke206_update_mas_tlb_miss(CPUPPCState *env, target_ulong address, > + MMUAccessType access_type, int mmu_idx) > +{ > + uint32_t epid; > + bool as, pr; > + uint32_t missed_tid = 0; > + bool use_epid = mmubooke206_get_as(env, mmu_idx, &epid, &as, &pr); > + > + if (access_type == MMU_INST_FETCH) { > + as = msr_ir; > + } > + env->spr[SPR_BOOKE_MAS0] = env->spr[SPR_BOOKE_MAS4] & MAS4_TLBSELD_MASK; > + env->spr[SPR_BOOKE_MAS1] = env->spr[SPR_BOOKE_MAS4] & MAS4_TSIZED_MASK; > + env->spr[SPR_BOOKE_MAS2] = env->spr[SPR_BOOKE_MAS4] & MAS4_WIMGED_MASK; > + env->spr[SPR_BOOKE_MAS3] = 0; > + env->spr[SPR_BOOKE_MAS6] = 0; > + env->spr[SPR_BOOKE_MAS7] = 0; > + > + /* AS */ > + if (as) { > + env->spr[SPR_BOOKE_MAS1] |= MAS1_TS; > + env->spr[SPR_BOOKE_MAS6] |= MAS6_SAS; > + } > + > + env->spr[SPR_BOOKE_MAS1] |= MAS1_VALID; > + env->spr[SPR_BOOKE_MAS2] |= address & MAS2_EPN_MASK; > + > + if (!use_epid) { > + switch (env->spr[SPR_BOOKE_MAS4] & MAS4_TIDSELD_PIDZ) { > + case MAS4_TIDSELD_PID0: > + missed_tid = env->spr[SPR_BOOKE_PID]; > + break; > + case MAS4_TIDSELD_PID1: > + missed_tid = env->spr[SPR_BOOKE_PID1]; > + break; > + case MAS4_TIDSELD_PID2: > + missed_tid = env->spr[SPR_BOOKE_PID2]; > + break; > + } > + env->spr[SPR_BOOKE_MAS6] |= env->spr[SPR_BOOKE_PID] << 16; > + } else { > + missed_tid = epid; > + env->spr[SPR_BOOKE_MAS6] |= missed_tid << 16; > + } > + env->spr[SPR_BOOKE_MAS1] |= (missed_tid << MAS1_TID_SHIFT); > + > + > + /* next victim logic */ > + env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_ESEL_SHIFT; > + env->last_way++; > + env->last_way &= booke206_tlb_ways(env, 0) - 1; > + env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_NV_SHIFT; > +} > + > +/* Perform address translation */ > +static int cpu_ppc_handle_mmu_fault(CPUPPCState *env, target_ulong address, > + MMUAccessType access_type, int mmu_idx) > +{ > + CPUState *cs = env_cpu(env); > + PowerPCCPU *cpu = POWERPC_CPU(cs); > + mmu_ctx_t ctx; > + int type; > + int ret = 0; > + > + if (access_type == MMU_INST_FETCH) { > + /* code access */ > + type = ACCESS_CODE; > + } else { > + /* data access */ > + type = env->access_type; > + } > + ret = get_physical_address_wtlb(env, &ctx, address, access_type, > + type, mmu_idx); > + if (ret == 0) { > + tlb_set_page(cs, address & TARGET_PAGE_MASK, > + ctx.raddr & TARGET_PAGE_MASK, ctx.prot, > + mmu_idx, TARGET_PAGE_SIZE); > + ret = 0; > + } else if (ret < 0) { > + LOG_MMU_STATE(cs); > + if (type == ACCESS_CODE) { > + switch (ret) { > + case -1: > + /* No matches in page tables or TLB */ > + switch (env->mmu_model) { > + case POWERPC_MMU_SOFT_6xx: > + cs->exception_index = POWERPC_EXCP_IFTLB; > + env->error_code = 1 << 18; > + env->spr[SPR_IMISS] = address; > + env->spr[SPR_ICMP] = 0x80000000 | ctx.ptem; > + goto tlb_miss; > + case POWERPC_MMU_SOFT_74xx: > + cs->exception_index = POWERPC_EXCP_IFTLB; > + goto tlb_miss_74xx; > + case POWERPC_MMU_SOFT_4xx: > + case POWERPC_MMU_SOFT_4xx_Z: > + cs->exception_index = POWERPC_EXCP_ITLB; > + env->error_code = 0; > + env->spr[SPR_40x_DEAR] = address; > + env->spr[SPR_40x_ESR] = 0x00000000; > + break; > + case POWERPC_MMU_BOOKE206: > + booke206_update_mas_tlb_miss(env, address, 2, mmu_idx); > + /* fall through */ > + case POWERPC_MMU_BOOKE: > + cs->exception_index = POWERPC_EXCP_ITLB; > + env->error_code = 0; > + env->spr[SPR_BOOKE_DEAR] = address; > + env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx, MMU_DATA_LOAD); > + return -1; > + case POWERPC_MMU_MPC8xx: > + /* XXX: TODO */ > + cpu_abort(cs, "MPC8xx MMU model is not implemented\n"); > + break; > + case POWERPC_MMU_REAL: > + cpu_abort(cs, "PowerPC in real mode should never raise " > + "any MMU exceptions\n"); > + return -1; > + default: > + cpu_abort(cs, "Unknown or invalid MMU model\n"); > + return -1; > + } > + break; > + case -2: > + /* Access rights violation */ > + cs->exception_index = POWERPC_EXCP_ISI; > + env->error_code = 0x08000000; > + break; > + case -3: > + /* No execute protection violation */ > + if ((env->mmu_model == POWERPC_MMU_BOOKE) || > + (env->mmu_model == POWERPC_MMU_BOOKE206)) { > + env->spr[SPR_BOOKE_ESR] = 0x00000000; > + } > + cs->exception_index = POWERPC_EXCP_ISI; > + env->error_code = 0x10000000; > + break; > + case -4: > + /* Direct store exception */ > + /* No code fetch is allowed in direct-store areas */ > + cs->exception_index = POWERPC_EXCP_ISI; > + env->error_code = 0x10000000; > + break; > + } > + } else { > + switch (ret) { > + case -1: > + /* No matches in page tables or TLB */ > + switch (env->mmu_model) { > + case POWERPC_MMU_SOFT_6xx: > + if (access_type == MMU_DATA_STORE) { > + cs->exception_index = POWERPC_EXCP_DSTLB; > + env->error_code = 1 << 16; > + } else { > + cs->exception_index = POWERPC_EXCP_DLTLB; > + env->error_code = 0; > + } > + env->spr[SPR_DMISS] = address; > + env->spr[SPR_DCMP] = 0x80000000 | ctx.ptem; > + tlb_miss: > + env->error_code |= ctx.key << 19; > + env->spr[SPR_HASH1] = ppc_hash32_hpt_base(cpu) + > + get_pteg_offset32(cpu, ctx.hash[0]); > + env->spr[SPR_HASH2] = ppc_hash32_hpt_base(cpu) + > + get_pteg_offset32(cpu, ctx.hash[1]); > + break; > + case POWERPC_MMU_SOFT_74xx: > + if (access_type == MMU_DATA_STORE) { > + cs->exception_index = POWERPC_EXCP_DSTLB; > + } else { > + cs->exception_index = POWERPC_EXCP_DLTLB; > + } > + tlb_miss_74xx: > + /* Implement LRU algorithm */ > + env->error_code = ctx.key << 19; > + env->spr[SPR_TLBMISS] = (address & ~((target_ulong)0x3)) | > + ((env->last_way + 1) & (env->nb_ways - 1)); > + env->spr[SPR_PTEHI] = 0x80000000 | ctx.ptem; > + break; > + case POWERPC_MMU_SOFT_4xx: > + case POWERPC_MMU_SOFT_4xx_Z: > + cs->exception_index = POWERPC_EXCP_DTLB; > + env->error_code = 0; > + env->spr[SPR_40x_DEAR] = address; > + if (access_type == MMU_DATA_STORE) { > + env->spr[SPR_40x_ESR] = 0x00800000; > + } else { > + env->spr[SPR_40x_ESR] = 0x00000000; > + } > + break; > + case POWERPC_MMU_MPC8xx: > + /* XXX: TODO */ > + cpu_abort(cs, "MPC8xx MMU model is not implemented\n"); > + break; > + case POWERPC_MMU_BOOKE206: > + booke206_update_mas_tlb_miss(env, address, access_type, mmu_idx); > + /* fall through */ > + case POWERPC_MMU_BOOKE: > + cs->exception_index = POWERPC_EXCP_DTLB; > + env->error_code = 0; > + env->spr[SPR_BOOKE_DEAR] = address; > + env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx, access_type); > + return -1; > + case POWERPC_MMU_REAL: > + cpu_abort(cs, "PowerPC in real mode should never raise " > + "any MMU exceptions\n"); > + return -1; > + default: > + cpu_abort(cs, "Unknown or invalid MMU model\n"); > + return -1; > + } > + break; > + case -2: > + /* Access rights violation */ > + cs->exception_index = POWERPC_EXCP_DSI; > + env->error_code = 0; > + if (env->mmu_model == POWERPC_MMU_SOFT_4xx > + || env->mmu_model == POWERPC_MMU_SOFT_4xx_Z) { > + env->spr[SPR_40x_DEAR] = address; > + if (access_type == MMU_DATA_STORE) { > + env->spr[SPR_40x_ESR] |= 0x00800000; > + } > + } else if ((env->mmu_model == POWERPC_MMU_BOOKE) || > + (env->mmu_model == POWERPC_MMU_BOOKE206)) { > + env->spr[SPR_BOOKE_DEAR] = address; > + env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx, access_type); > + } else { > + env->spr[SPR_DAR] = address; > + if (access_type == MMU_DATA_STORE) { > + env->spr[SPR_DSISR] = 0x0A000000; > + } else { > + env->spr[SPR_DSISR] = 0x08000000; > + } > + } > + break; > + case -4: > + /* Direct store exception */ > + switch (type) { > + case ACCESS_FLOAT: > + /* Floating point load/store */ > + cs->exception_index = POWERPC_EXCP_ALIGN; > + env->error_code = POWERPC_EXCP_ALIGN_FP; > + env->spr[SPR_DAR] = address; > + break; > + case ACCESS_RES: > + /* lwarx, ldarx or stwcx. */ > + cs->exception_index = POWERPC_EXCP_DSI; > + env->error_code = 0; > + env->spr[SPR_DAR] = address; > + if (access_type == MMU_DATA_STORE) { > + env->spr[SPR_DSISR] = 0x06000000; > + } else { > + env->spr[SPR_DSISR] = 0x04000000; > + } > + break; > + case ACCESS_EXT: > + /* eciwx or ecowx */ > + cs->exception_index = POWERPC_EXCP_DSI; > + env->error_code = 0; > + env->spr[SPR_DAR] = address; > + if (access_type == MMU_DATA_STORE) { > + env->spr[SPR_DSISR] = 0x06100000; > + } else { > + env->spr[SPR_DSISR] = 0x04100000; > + } > + break; > + default: > + printf("DSI: invalid exception (%d)\n", ret); > + cs->exception_index = POWERPC_EXCP_PROGRAM; > + env->error_code = > + POWERPC_EXCP_INVAL | POWERPC_EXCP_INVAL_INVAL; > + env->spr[SPR_DAR] = address; > + break; > + } > + break; > + } > + } > + ret = 1; > + } > + > + return ret; > +} > + > +bool ppc_cpu_tlb_fill(CPUState *cs, vaddr addr, int size, > + MMUAccessType access_type, int mmu_idx, > + bool probe, uintptr_t retaddr) > +{ > + PowerPCCPU *cpu = POWERPC_CPU(cs); > + PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cs); > + CPUPPCState *env = &cpu->env; > + int ret; > + > + if (pcc->handle_mmu_fault) { > + ret = pcc->handle_mmu_fault(cpu, addr, access_type, mmu_idx); > + } else { > + ret = cpu_ppc_handle_mmu_fault(env, addr, access_type, mmu_idx); > + } > + if (unlikely(ret != 0)) { > + if (probe) { > + return false; > + } > + raise_exception_err_ra(env, cs->exception_index, env->error_code, > + retaddr); > + } > + return true; > +} > diff --git a/target/ppc/mmu_helper.c b/target/ppc/mmu_helper.c > index 803b66f2b0..dbf7b398cd 100644 > --- a/target/ppc/mmu_helper.c > +++ b/target/ppc/mmu_helper.c > @@ -33,1736 +33,156 @@ > #include "internal.h" > #include "mmu-book3s-v3.h" > #include "mmu-radix64.h" > +#include "exec/helper-proto.h" > +#include "exec/cpu_ldst.h" > > -#ifdef CONFIG_TCG > -#include "exec/helper-proto.h" > -#include "exec/cpu_ldst.h" > -#endif > -/* #define DEBUG_MMU */ > -/* #define DEBUG_BATS */ > -/* #define DEBUG_SOFTWARE_TLB */ > -/* #define DUMP_PAGE_TABLES */ > -/* #define FLUSH_ALL_TLBS */ > - > -#ifdef DEBUG_MMU > -# define LOG_MMU_STATE(cpu) log_cpu_state_mask(CPU_LOG_MMU, (cpu), 0) > -#else > -# define LOG_MMU_STATE(cpu) do { } while (0) > -#endif > - > -#ifdef DEBUG_SOFTWARE_TLB > -# define LOG_SWTLB(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__) > -#else > -# define LOG_SWTLB(...) do { } while (0) > -#endif > - > -#ifdef DEBUG_BATS > -# define LOG_BATS(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__) > -#else > -# define LOG_BATS(...) do { } while (0) > -#endif > - > -/*****************************************************************************/ > -/* PowerPC MMU emulation */ > - > -/* Context used internally during MMU translations */ > -typedef struct mmu_ctx_t mmu_ctx_t; > -struct mmu_ctx_t { > - hwaddr raddr; /* Real address */ > - hwaddr eaddr; /* Effective address */ > - int prot; /* Protection bits */ > - hwaddr hash[2]; /* Pagetable hash values */ > - target_ulong ptem; /* Virtual segment ID | API */ > - int key; /* Access key */ > - int nx; /* Non-execute area */ > -}; > - > -/* Common routines used by software and hardware TLBs emulation */ > -static inline int pte_is_valid(target_ulong pte0) > -{ > - return pte0 & 0x80000000 ? 1 : 0; > -} > - > -static inline void pte_invalidate(target_ulong *pte0) > -{ > - *pte0 &= ~0x80000000; > -} > - > -#define PTE_PTEM_MASK 0x7FFFFFBF > -#define PTE_CHECK_MASK (TARGET_PAGE_MASK | 0x7B) > - > -static int pp_check(int key, int pp, int nx) > -{ > - int access; > - > - /* Compute access rights */ > - access = 0; > - if (key == 0) { > - switch (pp) { > - case 0x0: > - case 0x1: > - case 0x2: > - access |= PAGE_WRITE; > - /* fall through */ > - case 0x3: > - access |= PAGE_READ; > - break; > - } > - } else { > - switch (pp) { > - case 0x0: > - access = 0; > - break; > - case 0x1: > - case 0x3: > - access = PAGE_READ; > - break; > - case 0x2: > - access = PAGE_READ | PAGE_WRITE; > - break; > - } > - } > - if (nx == 0) { > - access |= PAGE_EXEC; > - } > - > - return access; > -} > - > -static int check_prot(int prot, MMUAccessType access_type) > -{ > - return prot & prot_for_access_type(access_type) ? 0 : -2; > -} > - > -static int ppc6xx_tlb_pte_check(mmu_ctx_t *ctx, target_ulong pte0, > - target_ulong pte1, int h, > - MMUAccessType access_type) > -{ > - target_ulong ptem, mmask; > - int access, ret, pteh, ptev, pp; > - > - ret = -1; > - /* Check validity and table match */ > - ptev = pte_is_valid(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_mask(CPU_LOG_MMU, "Bad RPN/WIMG/PP\n"); > - return -3; > - } > - } > - /* Compute access rights */ > - access = pp_check(ctx->key, pp, ctx->nx); > - /* Keep the matching PTE information */ > - ctx->raddr = pte1; > - ctx->prot = access; > - ret = check_prot(ctx->prot, access_type); > - if (ret == 0) { > - /* Access granted */ > - qemu_log_mask(CPU_LOG_MMU, "PTE access granted !\n"); > - } else { > - /* Access right violation */ > - qemu_log_mask(CPU_LOG_MMU, "PTE access rejected\n"); > - } > - } > - } > - > - return ret; > -} > - > -static int pte_update_flags(mmu_ctx_t *ctx, target_ulong *pte1p, > - int ret, MMUAccessType access_type) > -{ > - int store = 0; > - > - /* Update page flags */ > - if (!(*pte1p & 0x00000100)) { > - /* Update accessed flag */ > - *pte1p |= 0x00000100; > - store = 1; > - } > - if (!(*pte1p & 0x00000080)) { > - if (access_type == MMU_DATA_STORE && ret == 0) { > - /* Update changed flag */ > - *pte1p |= 0x00000080; > - store = 1; > - } else { > - /* Force page fault for first write access */ > - ctx->prot &= ~PAGE_WRITE; > - } > - } > - > - return store; > -} > - > -/* Software driven TLB helpers */ > -static inline int ppc6xx_tlb_getnum(CPUPPCState *env, target_ulong eaddr, > - int way, int is_code) > -{ > - int nr; > - > - /* Select TLB num in a way from address */ > - nr = (eaddr >> TARGET_PAGE_BITS) & (env->tlb_per_way - 1); > - /* Select TLB way */ > - nr += env->tlb_per_way * way; > - /* 6xx have separate TLBs for instructions and data */ > - if (is_code && env->id_tlbs == 1) { > - nr += env->nb_tlb; > - } > - > - return nr; > -} > - > -static inline void ppc6xx_tlb_invalidate_all(CPUPPCState *env) > -{ > - ppc6xx_tlb_t *tlb; > - int nr, max; > - > - /* LOG_SWTLB("Invalidate all TLBs\n"); */ > - /* Invalidate all defined software TLB */ > - max = env->nb_tlb; > - if (env->id_tlbs == 1) { > - max *= 2; > - } > - for (nr = 0; nr < max; nr++) { > - tlb = &env->tlb.tlb6[nr]; > - pte_invalidate(&tlb->pte0); > - } > - tlb_flush(env_cpu(env)); > -} > - > -static inline void ppc6xx_tlb_invalidate_virt2(CPUPPCState *env, > - target_ulong eaddr, > - int is_code, int match_epn) > -{ > -#if !defined(FLUSH_ALL_TLBS) > - CPUState *cs = env_cpu(env); > - ppc6xx_tlb_t *tlb; > - int way, nr; > - > - /* Invalidate ITLB + DTLB, all ways */ > - for (way = 0; way < env->nb_ways; way++) { > - nr = ppc6xx_tlb_getnum(env, eaddr, way, is_code); > - tlb = &env->tlb.tlb6[nr]; > - if (pte_is_valid(tlb->pte0) && (match_epn == 0 || eaddr == tlb->EPN)) { > - LOG_SWTLB("TLB invalidate %d/%d " TARGET_FMT_lx "\n", nr, > - env->nb_tlb, eaddr); > - pte_invalidate(&tlb->pte0); > - tlb_flush_page(cs, tlb->EPN); > - } > - } > -#else > - /* XXX: PowerPC specification say this is valid as well */ > - ppc6xx_tlb_invalidate_all(env); > -#endif > -} > - > -static inline void ppc6xx_tlb_invalidate_virt(CPUPPCState *env, > - target_ulong eaddr, int is_code) > -{ > - ppc6xx_tlb_invalidate_virt2(env, eaddr, is_code, 0); > -} > - > -#ifdef CONFIG_TCG > -static void ppc6xx_tlb_store(CPUPPCState *env, target_ulong EPN, int way, > - int is_code, target_ulong pte0, target_ulong pte1) > -{ > - ppc6xx_tlb_t *tlb; > - int nr; > - > - nr = ppc6xx_tlb_getnum(env, EPN, way, is_code); > - tlb = &env->tlb.tlb6[nr]; > - LOG_SWTLB("Set TLB %d/%d EPN " TARGET_FMT_lx " PTE0 " TARGET_FMT_lx > - " PTE1 " TARGET_FMT_lx "\n", nr, env->nb_tlb, EPN, pte0, pte1); > - /* Invalidate any pending reference in QEMU for this virtual address */ > - ppc6xx_tlb_invalidate_virt2(env, EPN, is_code, 1); > - tlb->pte0 = pte0; > - tlb->pte1 = pte1; > - tlb->EPN = EPN; > - /* Store last way for LRU mechanism */ > - env->last_way = way; > -} > -#endif > - > -static int ppc6xx_tlb_check(CPUPPCState *env, mmu_ctx_t *ctx, > - target_ulong eaddr, MMUAccessType access_type) > -{ > - ppc6xx_tlb_t *tlb; > - int nr, best, way; > - int ret; > - > - best = -1; > - ret = -1; /* No TLB found */ > - for (way = 0; way < env->nb_ways; way++) { > - nr = ppc6xx_tlb_getnum(env, eaddr, way, access_type == MMU_INST_FETCH); > - tlb = &env->tlb.tlb6[nr]; > - /* This test "emulates" the PTE index match for hardware TLBs */ > - if ((eaddr & TARGET_PAGE_MASK) != tlb->EPN) { > - LOG_SWTLB("TLB %d/%d %s [" TARGET_FMT_lx " " TARGET_FMT_lx > - "] <> " TARGET_FMT_lx "\n", nr, env->nb_tlb, > - pte_is_valid(tlb->pte0) ? "valid" : "inval", > - tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE, eaddr); > - continue; > - } > - LOG_SWTLB("TLB %d/%d %s " TARGET_FMT_lx " <> " TARGET_FMT_lx " " > - TARGET_FMT_lx " %c %c\n", nr, env->nb_tlb, > - pte_is_valid(tlb->pte0) ? "valid" : "inval", > - tlb->EPN, eaddr, tlb->pte1, > - access_type == MMU_DATA_STORE ? 'S' : 'L', > - access_type == MMU_INST_FETCH ? 'I' : 'D'); > - switch (ppc6xx_tlb_pte_check(ctx, tlb->pte0, tlb->pte1, > - 0, access_type)) { > - case -3: > - /* TLB inconsistency */ > - return -1; > - case -2: > - /* Access violation */ > - ret = -2; > - best = nr; > - break; > - case -1: > - default: > - /* No match */ > - break; > - case 0: > - /* access granted */ > - /* > - * XXX: we should go on looping to check all TLBs > - * consistency but we can speed-up the whole thing as > - * the result would be undefined if TLBs are not > - * consistent. > - */ > - ret = 0; > - best = nr; > - goto done; > - } > - } > - if (best != -1) { > - done: > - LOG_SWTLB("found TLB at addr " TARGET_FMT_plx " prot=%01x ret=%d\n", > - ctx->raddr & TARGET_PAGE_MASK, ctx->prot, ret); > - /* Update page flags */ > - pte_update_flags(ctx, &env->tlb.tlb6[best].pte1, ret, access_type); > - } > - > - return ret; > -} > - > -/* Perform BAT hit & translation */ > -static inline void bat_size_prot(CPUPPCState *env, target_ulong *blp, > - int *validp, int *protp, target_ulong *BATu, > - target_ulong *BATl) > -{ > - target_ulong bl; > - int pp, valid, prot; > - > - bl = (*BATu & 0x00001FFC) << 15; > - valid = 0; > - prot = 0; > - if (((msr_pr == 0) && (*BATu & 0x00000002)) || > - ((msr_pr != 0) && (*BATu & 0x00000001))) { > - valid = 1; > - pp = *BATl & 0x00000003; > - if (pp != 0) { > - prot = PAGE_READ | PAGE_EXEC; > - if (pp == 0x2) { > - prot |= PAGE_WRITE; > - } > - } > - } > - *blp = bl; > - *validp = valid; > - *protp = prot; > -} > - > -static int get_bat_6xx_tlb(CPUPPCState *env, mmu_ctx_t *ctx, > - target_ulong virtual, MMUAccessType access_type) > -{ > - target_ulong *BATlt, *BATut, *BATu, *BATl; > - target_ulong BEPIl, BEPIu, bl; > - int i, valid, prot; > - int ret = -1; > - bool ifetch = access_type == MMU_INST_FETCH; > - > - LOG_BATS("%s: %cBAT v " TARGET_FMT_lx "\n", __func__, > - ifetch ? 'I' : 'D', virtual); > - if (ifetch) { > - BATlt = env->IBAT[1]; > - BATut = env->IBAT[0]; > - } else { > - BATlt = env->DBAT[1]; > - BATut = env->DBAT[0]; > - } > - for (i = 0; i < env->nb_BATs; i++) { > - BATu = &BATut[i]; > - BATl = &BATlt[i]; > - BEPIu = *BATu & 0xF0000000; > - BEPIl = *BATu & 0x0FFE0000; > - bat_size_prot(env, &bl, &valid, &prot, BATu, BATl); > - LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx > - " BATl " TARGET_FMT_lx "\n", __func__, > - ifetch ? 'I' : 'D', i, virtual, *BATu, *BATl); > - if ((virtual & 0xF0000000) == BEPIu && > - ((virtual & 0x0FFE0000) & ~bl) == BEPIl) { > - /* BAT matches */ > - if (valid != 0) { > - /* Get physical address */ > - ctx->raddr = (*BATl & 0xF0000000) | > - ((virtual & 0x0FFE0000 & bl) | (*BATl & 0x0FFE0000)) | > - (virtual & 0x0001F000); > - /* Compute access rights */ > - ctx->prot = prot; > - ret = check_prot(ctx->prot, access_type); > - if (ret == 0) { > - LOG_BATS("BAT %d match: r " TARGET_FMT_plx " prot=%c%c\n", > - i, ctx->raddr, ctx->prot & PAGE_READ ? 'R' : '-', > - ctx->prot & PAGE_WRITE ? 'W' : '-'); > - } > - break; > - } > - } > - } > - if (ret < 0) { > -#if defined(DEBUG_BATS) > - if (qemu_log_enabled()) { > - LOG_BATS("no BAT match for " TARGET_FMT_lx ":\n", virtual); > - for (i = 0; i < 4; i++) { > - BATu = &BATut[i]; > - BATl = &BATlt[i]; > - BEPIu = *BATu & 0xF0000000; > - BEPIl = *BATu & 0x0FFE0000; > - bl = (*BATu & 0x00001FFC) << 15; > - LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx > - " BATl " TARGET_FMT_lx "\n\t" TARGET_FMT_lx " " > - TARGET_FMT_lx " " TARGET_FMT_lx "\n", > - __func__, ifetch ? 'I' : 'D', i, virtual, > - *BATu, *BATl, BEPIu, BEPIl, bl); > - } > - } > -#endif > - } > - /* No hit */ > - return ret; > -} > - > -/* Perform segment based translation */ > -static int get_segment_6xx_tlb(CPUPPCState *env, mmu_ctx_t *ctx, > - target_ulong eaddr, MMUAccessType access_type, > - int type) > -{ > - PowerPCCPU *cpu = env_archcpu(env); > - hwaddr hash; > - target_ulong vsid; > - int ds, pr, target_page_bits; > - int ret; > - target_ulong sr, pgidx; > - > - pr = msr_pr; > - ctx->eaddr = eaddr; > - > - sr = env->sr[eaddr >> 28]; > - ctx->key = (((sr & 0x20000000) && (pr != 0)) || > - ((sr & 0x40000000) && (pr == 0))) ? 1 : 0; > - ds = sr & 0x80000000 ? 1 : 0; > - ctx->nx = sr & 0x10000000 ? 1 : 0; > - vsid = sr & 0x00FFFFFF; > - target_page_bits = TARGET_PAGE_BITS; > - qemu_log_mask(CPU_LOG_MMU, > - "Check segment v=" TARGET_FMT_lx " %d " TARGET_FMT_lx > - " nip=" TARGET_FMT_lx " lr=" TARGET_FMT_lx > - " ir=%d dr=%d pr=%d %d t=%d\n", > - eaddr, (int)(eaddr >> 28), sr, env->nip, env->lr, (int)msr_ir, > - (int)msr_dr, pr != 0 ? 1 : 0, access_type == MMU_DATA_STORE, type); > - pgidx = (eaddr & ~SEGMENT_MASK_256M) >> target_page_bits; > - hash = vsid ^ pgidx; > - ctx->ptem = (vsid << 7) | (pgidx >> 10); > - > - qemu_log_mask(CPU_LOG_MMU, > - "pte segment: key=%d ds %d nx %d vsid " TARGET_FMT_lx "\n", > - ctx->key, ds, ctx->nx, vsid); > - ret = -1; > - if (!ds) { > - /* Check if instruction fetch is allowed, if needed */ > - if (type != ACCESS_CODE || ctx->nx == 0) { > - /* Page address translation */ > - qemu_log_mask(CPU_LOG_MMU, "htab_base " TARGET_FMT_plx > - " htab_mask " TARGET_FMT_plx > - " hash " TARGET_FMT_plx "\n", > - ppc_hash32_hpt_base(cpu), ppc_hash32_hpt_mask(cpu), hash); > - ctx->hash[0] = hash; > - ctx->hash[1] = ~hash; > - > - /* Initialize real address with an invalid value */ > - ctx->raddr = (hwaddr)-1ULL; > - /* Software TLB search */ > - ret = ppc6xx_tlb_check(env, ctx, eaddr, access_type); > -#if defined(DUMP_PAGE_TABLES) > - if (qemu_loglevel_mask(CPU_LOG_MMU)) { > - CPUState *cs = env_cpu(env); > - hwaddr curaddr; > - uint32_t a0, a1, a2, a3; > - > - qemu_log("Page table: " TARGET_FMT_plx " len " TARGET_FMT_plx > - "\n", ppc_hash32_hpt_base(cpu), > - ppc_hash32_hpt_mask(env) + 0x80); > - for (curaddr = ppc_hash32_hpt_base(cpu); > - curaddr < (ppc_hash32_hpt_base(cpu) > - + ppc_hash32_hpt_mask(cpu) + 0x80); > - curaddr += 16) { > - a0 = ldl_phys(cs->as, curaddr); > - a1 = ldl_phys(cs->as, curaddr + 4); > - a2 = ldl_phys(cs->as, curaddr + 8); > - a3 = ldl_phys(cs->as, curaddr + 12); > - if (a0 != 0 || a1 != 0 || a2 != 0 || a3 != 0) { > - qemu_log(TARGET_FMT_plx ": %08x %08x %08x %08x\n", > - curaddr, a0, a1, a2, a3); > - } > - } > - } > -#endif > - } else { > - qemu_log_mask(CPU_LOG_MMU, "No access allowed\n"); > - ret = -3; > - } > - } else { > - target_ulong sr; > - > - qemu_log_mask(CPU_LOG_MMU, "direct store...\n"); > - /* Direct-store segment : absolutely *BUGGY* for now */ > - > - /* > - * Direct-store implies a 32-bit MMU. > - * Check the Segment Register's bus unit ID (BUID). > - */ > - sr = env->sr[eaddr >> 28]; > - if ((sr & 0x1FF00000) >> 20 == 0x07f) { > - /* > - * Memory-forced I/O controller interface access > - * > - * If T=1 and BUID=x'07F', the 601 performs a memory > - * access to SR[28-31] LA[4-31], bypassing all protection > - * mechanisms. > - */ > - ctx->raddr = ((sr & 0xF) << 28) | (eaddr & 0x0FFFFFFF); > - ctx->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; > - return 0; > - } > - > - switch (type) { > - case ACCESS_INT: > - /* Integer load/store : only access allowed */ > - break; > - case ACCESS_CODE: > - /* No code fetch is allowed in direct-store areas */ > - return -4; > - case ACCESS_FLOAT: > - /* Floating point load/store */ > - return -4; > - case ACCESS_RES: > - /* lwarx, ldarx or srwcx. */ > - return -4; > - case ACCESS_CACHE: > - /* > - * dcba, dcbt, dcbtst, dcbf, dcbi, dcbst, dcbz, or icbi > - * > - * Should make the instruction do no-op. As it already do > - * no-op, it's quite easy :-) > - */ > - ctx->raddr = eaddr; > - return 0; > - case ACCESS_EXT: > - /* eciwx or ecowx */ > - return -4; > - default: > - qemu_log_mask(CPU_LOG_MMU, "ERROR: instruction should not need " > - "address translation\n"); > - return -4; > - } > - if ((access_type == MMU_DATA_STORE || ctx->key != 1) && > - (access_type == MMU_DATA_LOAD || ctx->key != 0)) { > - ctx->raddr = eaddr; > - ret = 2; > - } else { > - ret = -2; > - } > - } > - > - return ret; > -} > - > -/* Generic TLB check function for embedded PowerPC implementations */ > -static int ppcemb_tlb_check(CPUPPCState *env, ppcemb_tlb_t *tlb, > - hwaddr *raddrp, > - target_ulong address, uint32_t pid, int ext, > - int i) > -{ > - target_ulong mask; > - > - /* Check valid flag */ > - if (!(tlb->prot & PAGE_VALID)) { > - return -1; > - } > - mask = ~(tlb->size - 1); > - LOG_SWTLB("%s: TLB %d address " TARGET_FMT_lx " PID %u <=> " TARGET_FMT_lx > - " " TARGET_FMT_lx " %u %x\n", __func__, i, address, pid, tlb->EPN, > - mask, (uint32_t)tlb->PID, tlb->prot); > - /* Check PID */ > - if (tlb->PID != 0 && tlb->PID != pid) { > - return -1; > - } > - /* Check effective address */ > - if ((address & mask) != tlb->EPN) { > - return -1; > - } > - *raddrp = (tlb->RPN & mask) | (address & ~mask); > - if (ext) { > - /* Extend the physical address to 36 bits */ > - *raddrp |= (uint64_t)(tlb->RPN & 0xF) << 32; > - } > - > - return 0; > -} > - > -#ifdef CONFIG_TCG > -/* Generic TLB search function for PowerPC embedded implementations */ > -static int ppcemb_tlb_search(CPUPPCState *env, target_ulong address, > - uint32_t pid) > -{ > - ppcemb_tlb_t *tlb; > - hwaddr raddr; > - int i, ret; > - > - /* Default return value is no match */ > - ret = -1; > - for (i = 0; i < env->nb_tlb; i++) { > - tlb = &env->tlb.tlbe[i]; > - if (ppcemb_tlb_check(env, tlb, &raddr, address, pid, 0, i) == 0) { > - ret = i; > - break; > - } > - } > - > - return ret; > -} > -#endif > - > -/* Helpers specific to PowerPC 40x implementations */ > -static inline void ppc4xx_tlb_invalidate_all(CPUPPCState *env) > -{ > - ppcemb_tlb_t *tlb; > - int i; > - > - for (i = 0; i < env->nb_tlb; i++) { > - tlb = &env->tlb.tlbe[i]; > - tlb->prot &= ~PAGE_VALID; > - } > - tlb_flush(env_cpu(env)); > -} > - > -static int mmu40x_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, > - target_ulong address, > - MMUAccessType access_type) > -{ > - ppcemb_tlb_t *tlb; > - hwaddr raddr; > - int i, ret, zsel, zpr, pr; > - > - ret = -1; > - raddr = (hwaddr)-1ULL; > - pr = msr_pr; > - for (i = 0; i < env->nb_tlb; i++) { > - tlb = &env->tlb.tlbe[i]; > - if (ppcemb_tlb_check(env, tlb, &raddr, address, > - env->spr[SPR_40x_PID], 0, i) < 0) { > - continue; > - } > - zsel = (tlb->attr >> 4) & 0xF; > - zpr = (env->spr[SPR_40x_ZPR] >> (30 - (2 * zsel))) & 0x3; > - LOG_SWTLB("%s: TLB %d zsel %d zpr %d ty %d attr %08x\n", > - __func__, i, zsel, zpr, access_type, tlb->attr); > - /* Check execute enable bit */ > - switch (zpr) { > - case 0x2: > - if (pr != 0) { > - goto check_perms; > - } > - /* fall through */ > - case 0x3: > - /* All accesses granted */ > - ctx->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; > - ret = 0; > - break; > - case 0x0: > - if (pr != 0) { > - /* Raise Zone protection fault. */ > - env->spr[SPR_40x_ESR] = 1 << 22; > - ctx->prot = 0; > - ret = -2; > - break; > - } > - /* fall through */ > - case 0x1: > - check_perms: > - /* Check from TLB entry */ > - ctx->prot = tlb->prot; > - ret = check_prot(ctx->prot, access_type); > - if (ret == -2) { > - env->spr[SPR_40x_ESR] = 0; > - } > - break; > - } > - if (ret >= 0) { > - ctx->raddr = raddr; > - LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx > - " %d %d\n", __func__, address, ctx->raddr, ctx->prot, > - ret); > - return 0; > - } > - } > - LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx > - " %d %d\n", __func__, address, raddr, ctx->prot, ret); > - > - return ret; > -} > - > -void store_40x_sler(CPUPPCState *env, uint32_t val) > -{ > - /* XXX: TO BE FIXED */ > - if (val != 0x00000000) { > - cpu_abort(env_cpu(env), > - "Little-endian regions are not supported by now\n"); > - } > - env->spr[SPR_405_SLER] = val; > -} > - > -static int mmubooke_check_tlb(CPUPPCState *env, ppcemb_tlb_t *tlb, > - hwaddr *raddr, int *prot, target_ulong address, > - MMUAccessType access_type, int i) > -{ > - int prot2; > - > - if (ppcemb_tlb_check(env, tlb, raddr, address, > - env->spr[SPR_BOOKE_PID], > - !env->nb_pids, i) >= 0) { > - goto found_tlb; > - } > - > - if (env->spr[SPR_BOOKE_PID1] && > - ppcemb_tlb_check(env, tlb, raddr, address, > - env->spr[SPR_BOOKE_PID1], 0, i) >= 0) { > - goto found_tlb; > - } > - > - if (env->spr[SPR_BOOKE_PID2] && > - ppcemb_tlb_check(env, tlb, raddr, address, > - env->spr[SPR_BOOKE_PID2], 0, i) >= 0) { > - goto found_tlb; > - } > - > - LOG_SWTLB("%s: TLB entry not found\n", __func__); > - return -1; > - > -found_tlb: > - > - if (msr_pr != 0) { > - prot2 = tlb->prot & 0xF; > - } else { > - prot2 = (tlb->prot >> 4) & 0xF; > - } > - > - /* Check the address space */ > - if ((access_type == MMU_INST_FETCH ? msr_ir : msr_dr) != (tlb->attr & 1)) { > - LOG_SWTLB("%s: AS doesn't match\n", __func__); > - return -1; > - } > - > - *prot = prot2; > - if (prot2 & prot_for_access_type(access_type)) { > - LOG_SWTLB("%s: good TLB!\n", __func__); > - return 0; > - } > - > - LOG_SWTLB("%s: no prot match: %x\n", __func__, prot2); > - return access_type == MMU_INST_FETCH ? -3 : -2; > -} > - > -static int mmubooke_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, > - target_ulong address, > - MMUAccessType access_type) > -{ > - ppcemb_tlb_t *tlb; > - hwaddr raddr; > - int i, ret; > - > - ret = -1; > - raddr = (hwaddr)-1ULL; > - for (i = 0; i < env->nb_tlb; i++) { > - tlb = &env->tlb.tlbe[i]; > - ret = mmubooke_check_tlb(env, tlb, &raddr, &ctx->prot, address, > - access_type, i); > - if (ret != -1) { > - break; > - } > - } > - > - if (ret >= 0) { > - ctx->raddr = raddr; > - LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx > - " %d %d\n", __func__, address, ctx->raddr, ctx->prot, > - ret); > - } else { > - LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx > - " %d %d\n", __func__, address, raddr, ctx->prot, ret); > - } > - > - return ret; > -} > - > -#ifdef CONFIG_TCG > -static void booke206_flush_tlb(CPUPPCState *env, int flags, > - const int check_iprot) > -{ > - int tlb_size; > - int i, j; > - ppcmas_tlb_t *tlb = env->tlb.tlbm; > - > - for (i = 0; i < BOOKE206_MAX_TLBN; i++) { > - if (flags & (1 << i)) { > - tlb_size = booke206_tlb_size(env, i); > - for (j = 0; j < tlb_size; j++) { > - if (!check_iprot || !(tlb[j].mas1 & MAS1_IPROT)) { > - tlb[j].mas1 &= ~MAS1_VALID; > - } > - } > - } > - tlb += booke206_tlb_size(env, i); > - } > - > - tlb_flush(env_cpu(env)); > -} > -#endif > - > -static hwaddr booke206_tlb_to_page_size(CPUPPCState *env, > - ppcmas_tlb_t *tlb) > -{ > - int tlbm_size; > - > - tlbm_size = (tlb->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT; > - > - return 1024ULL << tlbm_size; > -} > - > -/* TLB check function for MAS based SoftTLBs */ > -static int ppcmas_tlb_check(CPUPPCState *env, ppcmas_tlb_t *tlb, > - hwaddr *raddrp, target_ulong address, > - uint32_t pid) > -{ > - hwaddr mask; > - uint32_t tlb_pid; > - > - if (!msr_cm) { > - /* In 32bit mode we can only address 32bit EAs */ > - address = (uint32_t)address; > - } > - > - /* Check valid flag */ > - if (!(tlb->mas1 & MAS1_VALID)) { > - return -1; > - } > - > - mask = ~(booke206_tlb_to_page_size(env, tlb) - 1); > - LOG_SWTLB("%s: TLB ADDR=0x" TARGET_FMT_lx " PID=0x%x MAS1=0x%x MAS2=0x%" > - PRIx64 " mask=0x%" HWADDR_PRIx " MAS7_3=0x%" PRIx64 " MAS8=0x%" > - PRIx32 "\n", __func__, address, pid, tlb->mas1, tlb->mas2, mask, > - tlb->mas7_3, tlb->mas8); > - > - /* Check PID */ > - tlb_pid = (tlb->mas1 & MAS1_TID_MASK) >> MAS1_TID_SHIFT; > - if (tlb_pid != 0 && tlb_pid != pid) { > - return -1; > - } > - > - /* Check effective address */ > - if ((address & mask) != (tlb->mas2 & MAS2_EPN_MASK)) { > - return -1; > - } > - > - if (raddrp) { > - *raddrp = (tlb->mas7_3 & mask) | (address & ~mask); > - } > - > - return 0; > -} > - > -static bool is_epid_mmu(int mmu_idx) > -{ > - return mmu_idx == PPC_TLB_EPID_STORE || mmu_idx == PPC_TLB_EPID_LOAD; > -} > - > -static uint32_t mmubooke206_esr(int mmu_idx, MMUAccessType access_type) > -{ > - uint32_t esr = 0; > - if (access_type == MMU_DATA_STORE) { > - esr |= ESR_ST; > - } > - if (is_epid_mmu(mmu_idx)) { > - esr |= ESR_EPID; > - } > - return esr; > -} > - > -/* > - * Get EPID register given the mmu_idx. If this is regular load, > - * construct the EPID access bits from current processor state > - * > - * Get the effective AS and PR bits and the PID. The PID is returned > - * only if EPID load is requested, otherwise the caller must detect > - * the correct EPID. Return true if valid EPID is returned. > - */ > -static bool mmubooke206_get_as(CPUPPCState *env, > - int mmu_idx, uint32_t *epid_out, > - bool *as_out, bool *pr_out) > -{ > - if (is_epid_mmu(mmu_idx)) { > - uint32_t epidr; > - if (mmu_idx == PPC_TLB_EPID_STORE) { > - epidr = env->spr[SPR_BOOKE_EPSC]; > - } else { > - epidr = env->spr[SPR_BOOKE_EPLC]; > - } > - *epid_out = (epidr & EPID_EPID) >> EPID_EPID_SHIFT; > - *as_out = !!(epidr & EPID_EAS); > - *pr_out = !!(epidr & EPID_EPR); > - return true; > - } else { > - *as_out = msr_ds; > - *pr_out = msr_pr; > - return false; > - } > -} > - > -/* Check if the tlb found by hashing really matches */ > -static int mmubooke206_check_tlb(CPUPPCState *env, ppcmas_tlb_t *tlb, > - hwaddr *raddr, int *prot, > - target_ulong address, > - MMUAccessType access_type, int mmu_idx) > -{ > - int prot2 = 0; > - uint32_t epid; > - bool as, pr; > - bool use_epid = mmubooke206_get_as(env, mmu_idx, &epid, &as, &pr); > - > - if (!use_epid) { > - if (ppcmas_tlb_check(env, tlb, raddr, address, > - env->spr[SPR_BOOKE_PID]) >= 0) { > - goto found_tlb; > - } > - > - if (env->spr[SPR_BOOKE_PID1] && > - ppcmas_tlb_check(env, tlb, raddr, address, > - env->spr[SPR_BOOKE_PID1]) >= 0) { > - goto found_tlb; > - } > - > - if (env->spr[SPR_BOOKE_PID2] && > - ppcmas_tlb_check(env, tlb, raddr, address, > - env->spr[SPR_BOOKE_PID2]) >= 0) { > - goto found_tlb; > - } > - } else { > - if (ppcmas_tlb_check(env, tlb, raddr, address, epid) >= 0) { > - goto found_tlb; > - } > - } > - > - LOG_SWTLB("%s: TLB entry not found\n", __func__); > - return -1; > - > -found_tlb: > - > - if (pr) { > - if (tlb->mas7_3 & MAS3_UR) { > - prot2 |= PAGE_READ; > - } > - if (tlb->mas7_3 & MAS3_UW) { > - prot2 |= PAGE_WRITE; > - } > - if (tlb->mas7_3 & MAS3_UX) { > - prot2 |= PAGE_EXEC; > - } > - } else { > - if (tlb->mas7_3 & MAS3_SR) { > - prot2 |= PAGE_READ; > - } > - if (tlb->mas7_3 & MAS3_SW) { > - prot2 |= PAGE_WRITE; > - } > - if (tlb->mas7_3 & MAS3_SX) { > - prot2 |= PAGE_EXEC; > - } > - } > - > - /* Check the address space and permissions */ > - if (access_type == MMU_INST_FETCH) { > - /* There is no way to fetch code using epid load */ > - assert(!use_epid); > - as = msr_ir; > - } > - > - if (as != ((tlb->mas1 & MAS1_TS) >> MAS1_TS_SHIFT)) { > - LOG_SWTLB("%s: AS doesn't match\n", __func__); > - return -1; > - } > - > - *prot = prot2; > - if (prot2 & prot_for_access_type(access_type)) { > - LOG_SWTLB("%s: good TLB!\n", __func__); > - return 0; > - } > - > - LOG_SWTLB("%s: no prot match: %x\n", __func__, prot2); > - return access_type == MMU_INST_FETCH ? -3 : -2; > -} > - > -static int mmubooke206_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, > - target_ulong address, > - MMUAccessType access_type, > - int mmu_idx) > -{ > - ppcmas_tlb_t *tlb; > - hwaddr raddr; > - int i, j, ret; > - > - ret = -1; > - raddr = (hwaddr)-1ULL; > - > - for (i = 0; i < BOOKE206_MAX_TLBN; i++) { > - int ways = booke206_tlb_ways(env, i); > - > - for (j = 0; j < ways; j++) { > - tlb = booke206_get_tlbm(env, i, address, j); > - if (!tlb) { > - continue; > - } > - ret = mmubooke206_check_tlb(env, tlb, &raddr, &ctx->prot, address, > - access_type, mmu_idx); > - if (ret != -1) { > - goto found_tlb; > - } > - } > - } > - > -found_tlb: > - > - if (ret >= 0) { > - ctx->raddr = raddr; > - LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx > - " %d %d\n", __func__, address, ctx->raddr, ctx->prot, > - ret); > - } else { > - LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx > - " %d %d\n", __func__, address, raddr, ctx->prot, ret); > - } > - > - return ret; > -} > - > -static const char *book3e_tsize_to_str[32] = { > - "1K", "2K", "4K", "8K", "16K", "32K", "64K", "128K", "256K", "512K", > - "1M", "2M", "4M", "8M", "16M", "32M", "64M", "128M", "256M", "512M", > - "1G", "2G", "4G", "8G", "16G", "32G", "64G", "128G", "256G", "512G", > - "1T", "2T" > -}; > - > -static void mmubooke_dump_mmu(CPUPPCState *env) > -{ > - ppcemb_tlb_t *entry; > - int i; > - > - if (kvm_enabled() && !env->kvm_sw_tlb) { > - qemu_printf("Cannot access KVM TLB\n"); > - return; > - } > - > - qemu_printf("\nTLB:\n"); > - qemu_printf("Effective Physical Size PID Prot " > - "Attr\n"); > - > - entry = &env->tlb.tlbe[0]; > - for (i = 0; i < env->nb_tlb; i++, entry++) { > - hwaddr ea, pa; > - target_ulong mask; > - uint64_t size = (uint64_t)entry->size; > - char size_buf[20]; > - > - /* Check valid flag */ > - if (!(entry->prot & PAGE_VALID)) { > - continue; > - } > - > - mask = ~(entry->size - 1); > - ea = entry->EPN & mask; > - pa = entry->RPN & mask; > - /* Extend the physical address to 36 bits */ > - pa |= (hwaddr)(entry->RPN & 0xF) << 32; > - if (size >= 1 * MiB) { > - snprintf(size_buf, sizeof(size_buf), "%3" PRId64 "M", size / MiB); > - } else { > - snprintf(size_buf, sizeof(size_buf), "%3" PRId64 "k", size / KiB); > - } > - qemu_printf("0x%016" PRIx64 " 0x%016" PRIx64 " %s %-5u %08x %08x\n", > - (uint64_t)ea, (uint64_t)pa, size_buf, (uint32_t)entry->PID, > - entry->prot, entry->attr); > - } > - > -} > - > -static void mmubooke206_dump_one_tlb(CPUPPCState *env, int tlbn, int offset, > - int tlbsize) > -{ > - ppcmas_tlb_t *entry; > - int i; > - > - qemu_printf("\nTLB%d:\n", tlbn); > - qemu_printf("Effective Physical Size TID TS SRWX" > - " URWX WIMGE U0123\n"); > - > - entry = &env->tlb.tlbm[offset]; > - for (i = 0; i < tlbsize; i++, entry++) { > - hwaddr ea, pa, size; > - int tsize; > - > - if (!(entry->mas1 & MAS1_VALID)) { > - continue; > - } > - > - tsize = (entry->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT; > - size = 1024ULL << tsize; > - ea = entry->mas2 & ~(size - 1); > - pa = entry->mas7_3 & ~(size - 1); > - > - qemu_printf("0x%016" PRIx64 " 0x%016" PRIx64 " %4s %-5u %1u S%c%c%c" > - "U%c%c%c %c%c%c%c%c U%c%c%c%c\n", > - (uint64_t)ea, (uint64_t)pa, > - book3e_tsize_to_str[tsize], > - (entry->mas1 & MAS1_TID_MASK) >> MAS1_TID_SHIFT, > - (entry->mas1 & MAS1_TS) >> MAS1_TS_SHIFT, > - entry->mas7_3 & MAS3_SR ? 'R' : '-', > - entry->mas7_3 & MAS3_SW ? 'W' : '-', > - entry->mas7_3 & MAS3_SX ? 'X' : '-', > - entry->mas7_3 & MAS3_UR ? 'R' : '-', > - entry->mas7_3 & MAS3_UW ? 'W' : '-', > - entry->mas7_3 & MAS3_UX ? 'X' : '-', > - entry->mas2 & MAS2_W ? 'W' : '-', > - entry->mas2 & MAS2_I ? 'I' : '-', > - entry->mas2 & MAS2_M ? 'M' : '-', > - entry->mas2 & MAS2_G ? 'G' : '-', > - entry->mas2 & MAS2_E ? 'E' : '-', > - entry->mas7_3 & MAS3_U0 ? '0' : '-', > - entry->mas7_3 & MAS3_U1 ? '1' : '-', > - entry->mas7_3 & MAS3_U2 ? '2' : '-', > - entry->mas7_3 & MAS3_U3 ? '3' : '-'); > - } > -} > - > -static void mmubooke206_dump_mmu(CPUPPCState *env) > -{ > - int offset = 0; > - int i; > - > - if (kvm_enabled() && !env->kvm_sw_tlb) { > - qemu_printf("Cannot access KVM TLB\n"); > - return; > - } > +/* #define DEBUG_BATS */ > +/* #define DEBUG_SOFTWARE_TLB */ > +/* #define DUMP_PAGE_TABLES */ > +/* #define FLUSH_ALL_TLBS */ > > - for (i = 0; i < BOOKE206_MAX_TLBN; i++) { > - int size = booke206_tlb_size(env, i); > +#ifdef DEBUG_SOFTWARE_TLB > +# define LOG_SWTLB(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__) > +#else > +# define LOG_SWTLB(...) do { } while (0) > +#endif > > - if (size == 0) { > - continue; > - } > +#ifdef DEBUG_BATS > +# define LOG_BATS(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__) > +#else > +# define LOG_BATS(...) do { } while (0) > +#endif > > - mmubooke206_dump_one_tlb(env, i, offset, size); > - offset += size; > - } > -} > +/*****************************************************************************/ > +/* PowerPC MMU emulation */ > > -static void mmu6xx_dump_BATs(CPUPPCState *env, int type) > +/* Software driven TLB helpers */ > +static inline void ppc6xx_tlb_invalidate_all(CPUPPCState *env) > { > - target_ulong *BATlt, *BATut, *BATu, *BATl; > - target_ulong BEPIl, BEPIu, bl; > - int i; > + ppc6xx_tlb_t *tlb; > + int nr, max; > > - switch (type) { > - case ACCESS_CODE: > - BATlt = env->IBAT[1]; > - BATut = env->IBAT[0]; > - break; > - default: > - BATlt = env->DBAT[1]; > - BATut = env->DBAT[0]; > - break; > + /* LOG_SWTLB("Invalidate all TLBs\n"); */ > + /* Invalidate all defined software TLB */ > + max = env->nb_tlb; > + if (env->id_tlbs == 1) { > + max *= 2; > } > - > - for (i = 0; i < env->nb_BATs; i++) { > - BATu = &BATut[i]; > - BATl = &BATlt[i]; > - BEPIu = *BATu & 0xF0000000; > - BEPIl = *BATu & 0x0FFE0000; > - bl = (*BATu & 0x00001FFC) << 15; > - qemu_printf("%s BAT%d BATu " TARGET_FMT_lx > - " BATl " TARGET_FMT_lx "\n\t" TARGET_FMT_lx " " > - TARGET_FMT_lx " " TARGET_FMT_lx "\n", > - type == ACCESS_CODE ? "code" : "data", i, > - *BATu, *BATl, BEPIu, BEPIl, bl); > + for (nr = 0; nr < max; nr++) { > + tlb = &env->tlb.tlb6[nr]; > + pte_invalidate(&tlb->pte0); > } > + tlb_flush(env_cpu(env)); > } > > -static void mmu6xx_dump_mmu(CPUPPCState *env) > +static inline void ppc6xx_tlb_invalidate_virt2(CPUPPCState *env, > + target_ulong eaddr, > + int is_code, int match_epn) > { > - PowerPCCPU *cpu = env_archcpu(env); > +#if !defined(FLUSH_ALL_TLBS) > + CPUState *cs = env_cpu(env); > ppc6xx_tlb_t *tlb; > - target_ulong sr; > - int type, way, entry, i; > - > - qemu_printf("HTAB base = 0x%"HWADDR_PRIx"\n", ppc_hash32_hpt_base(cpu)); > - qemu_printf("HTAB mask = 0x%"HWADDR_PRIx"\n", ppc_hash32_hpt_mask(cpu)); > - > - qemu_printf("\nSegment registers:\n"); > - for (i = 0; i < 32; i++) { > - sr = env->sr[i]; > - if (sr & 0x80000000) { > - qemu_printf("%02d T=%d Ks=%d Kp=%d BUID=0x%03x " > - "CNTLR_SPEC=0x%05x\n", i, > - sr & 0x80000000 ? 1 : 0, sr & 0x40000000 ? 1 : 0, > - sr & 0x20000000 ? 1 : 0, (uint32_t)((sr >> 20) & 0x1FF), > - (uint32_t)(sr & 0xFFFFF)); > - } else { > - qemu_printf("%02d T=%d Ks=%d Kp=%d N=%d VSID=0x%06x\n", i, > - sr & 0x80000000 ? 1 : 0, sr & 0x40000000 ? 1 : 0, > - sr & 0x20000000 ? 1 : 0, sr & 0x10000000 ? 1 : 0, > - (uint32_t)(sr & 0x00FFFFFF)); > - } > - } > - > - qemu_printf("\nBATs:\n"); > - mmu6xx_dump_BATs(env, ACCESS_INT); > - mmu6xx_dump_BATs(env, ACCESS_CODE); > - > - if (env->id_tlbs != 1) { > - qemu_printf("ERROR: 6xx MMU should have separated TLB" > - " for code and data\n"); > - } > + int way, nr; > > - qemu_printf("\nTLBs [EPN EPN + SIZE]\n"); > - > - for (type = 0; type < 2; type++) { > - for (way = 0; way < env->nb_ways; way++) { > - for (entry = env->nb_tlb * type + env->tlb_per_way * way; > - entry < (env->nb_tlb * type + env->tlb_per_way * (way + 1)); > - entry++) { > - > - tlb = &env->tlb.tlb6[entry]; > - qemu_printf("%s TLB %02d/%02d way:%d %s [" > - TARGET_FMT_lx " " TARGET_FMT_lx "]\n", > - type ? "code" : "data", entry % env->nb_tlb, > - env->nb_tlb, way, > - pte_is_valid(tlb->pte0) ? "valid" : "inval", > - tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE); > - } > + /* Invalidate ITLB + DTLB, all ways */ > + for (way = 0; way < env->nb_ways; way++) { > + nr = ppc6xx_tlb_getnum(env, eaddr, way, is_code); > + tlb = &env->tlb.tlb6[nr]; > + if (pte_is_valid(tlb->pte0) && (match_epn == 0 || eaddr == tlb->EPN)) { > + LOG_SWTLB("TLB invalidate %d/%d " TARGET_FMT_lx "\n", nr, > + env->nb_tlb, eaddr); > + pte_invalidate(&tlb->pte0); > + tlb_flush_page(cs, tlb->EPN); > } > } > -} > - > -void dump_mmu(CPUPPCState *env) > -{ > - switch (env->mmu_model) { > - case POWERPC_MMU_BOOKE: > - mmubooke_dump_mmu(env); > - break; > - case POWERPC_MMU_BOOKE206: > - mmubooke206_dump_mmu(env); > - break; > - case POWERPC_MMU_SOFT_6xx: > - case POWERPC_MMU_SOFT_74xx: > - mmu6xx_dump_mmu(env); > - break; > -#if defined(TARGET_PPC64) > - case POWERPC_MMU_64B: > - case POWERPC_MMU_2_03: > - case POWERPC_MMU_2_06: > - case POWERPC_MMU_2_07: > - dump_slb(env_archcpu(env)); > - break; > - case POWERPC_MMU_3_00: > - if (ppc64_v3_radix(env_archcpu(env))) { > - qemu_log_mask(LOG_UNIMP, "%s: the PPC64 MMU is unsupported\n", > - __func__); > - } else { > - dump_slb(env_archcpu(env)); > - } > - break; > +#else > + /* XXX: PowerPC specification say this is valid as well */ > + ppc6xx_tlb_invalidate_all(env); > #endif > - default: > - qemu_log_mask(LOG_UNIMP, "%s: unimplemented\n", __func__); > - } > } > > -static int check_physical(CPUPPCState *env, mmu_ctx_t *ctx, target_ulong eaddr, > - MMUAccessType access_type) > +static inline void ppc6xx_tlb_invalidate_virt(CPUPPCState *env, > + target_ulong eaddr, int is_code) > { > - int in_plb, ret; > - > - ctx->raddr = eaddr; > - ctx->prot = PAGE_READ | PAGE_EXEC; > - ret = 0; > - switch (env->mmu_model) { > - case POWERPC_MMU_SOFT_6xx: > - case POWERPC_MMU_SOFT_74xx: > - case POWERPC_MMU_SOFT_4xx: > - case POWERPC_MMU_REAL: > - case POWERPC_MMU_BOOKE: > - ctx->prot |= PAGE_WRITE; > - break; > - > - case POWERPC_MMU_SOFT_4xx_Z: > - if (unlikely(msr_pe != 0)) { > - /* > - * 403 family add some particular protections, using > - * PBL/PBU registers for accesses with no translation. > - */ > - in_plb = > - /* Check PLB validity */ > - (env->pb[0] < env->pb[1] && > - /* and address in plb area */ > - eaddr >= env->pb[0] && eaddr < env->pb[1]) || > - (env->pb[2] < env->pb[3] && > - eaddr >= env->pb[2] && eaddr < env->pb[3]) ? 1 : 0; > - if (in_plb ^ msr_px) { > - /* Access in protected area */ > - if (access_type == MMU_DATA_STORE) { > - /* Access is not allowed */ > - ret = -2; > - } > - } else { > - /* Read-write access is allowed */ > - ctx->prot |= PAGE_WRITE; > - } > - } > - break; > - > - default: > - /* Caller's checks mean we should never get here for other models */ > - abort(); > - return -1; > - } > - > - return ret; > + ppc6xx_tlb_invalidate_virt2(env, eaddr, is_code, 0); > } > > -static int get_physical_address_wtlb(CPUPPCState *env, mmu_ctx_t *ctx, > - target_ulong eaddr, > - MMUAccessType access_type, int type, > - int mmu_idx) > +static void ppc6xx_tlb_store(CPUPPCState *env, target_ulong EPN, int way, > + int is_code, target_ulong pte0, target_ulong pte1) > { > - int ret = -1; > - bool real_mode = (type == ACCESS_CODE && msr_ir == 0) > - || (type != ACCESS_CODE && msr_dr == 0); > - > - switch (env->mmu_model) { > - case POWERPC_MMU_SOFT_6xx: > - case POWERPC_MMU_SOFT_74xx: > - if (real_mode) { > - ret = check_physical(env, ctx, eaddr, access_type); > - } else { > - /* Try to find a BAT */ > - if (env->nb_BATs != 0) { > - ret = get_bat_6xx_tlb(env, ctx, eaddr, access_type); > - } > - if (ret < 0) { > - /* We didn't match any BAT entry or don't have BATs */ > - ret = get_segment_6xx_tlb(env, ctx, eaddr, access_type, type); > - } > - } > - break; > - > - case POWERPC_MMU_SOFT_4xx: > - case POWERPC_MMU_SOFT_4xx_Z: > - if (real_mode) { > - ret = check_physical(env, ctx, eaddr, access_type); > - } else { > - ret = mmu40x_get_physical_address(env, ctx, eaddr, access_type); > - } > - break; > - case POWERPC_MMU_BOOKE: > - ret = mmubooke_get_physical_address(env, ctx, eaddr, access_type); > - break; > - case POWERPC_MMU_BOOKE206: > - ret = mmubooke206_get_physical_address(env, ctx, eaddr, access_type, > - mmu_idx); > - break; > - case POWERPC_MMU_MPC8xx: > - /* XXX: TODO */ > - cpu_abort(env_cpu(env), "MPC8xx MMU model is not implemented\n"); > - break; > - case POWERPC_MMU_REAL: > - if (real_mode) { > - ret = check_physical(env, ctx, eaddr, access_type); > - } else { > - cpu_abort(env_cpu(env), > - "PowerPC in real mode do not do any translation\n"); > - } > - return -1; > - default: > - cpu_abort(env_cpu(env), "Unknown or invalid MMU model\n"); > - return -1; > - } > - > - return ret; > -} > + ppc6xx_tlb_t *tlb; > + int nr; > > -#ifdef CONFIG_TCG > -static int get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, > - target_ulong eaddr, MMUAccessType access_type, > - int type) > -{ > - return get_physical_address_wtlb(env, ctx, eaddr, access_type, type, 0); > + nr = ppc6xx_tlb_getnum(env, EPN, way, is_code); > + tlb = &env->tlb.tlb6[nr]; > + LOG_SWTLB("Set TLB %d/%d EPN " TARGET_FMT_lx " PTE0 " TARGET_FMT_lx > + " PTE1 " TARGET_FMT_lx "\n", nr, env->nb_tlb, EPN, pte0, pte1); > + /* Invalidate any pending reference in QEMU for this virtual address */ > + ppc6xx_tlb_invalidate_virt2(env, EPN, is_code, 1); > + tlb->pte0 = pte0; > + tlb->pte1 = pte1; > + tlb->EPN = EPN; > + /* Store last way for LRU mechanism */ > + env->last_way = way; > } > -#endif > > -hwaddr ppc_cpu_get_phys_page_debug(CPUState *cs, vaddr addr) > +/* Generic TLB search function for PowerPC embedded implementations */ > +static int ppcemb_tlb_search(CPUPPCState *env, target_ulong address, > + uint32_t pid) > { > - PowerPCCPU *cpu = POWERPC_CPU(cs); > - CPUPPCState *env = &cpu->env; > - mmu_ctx_t ctx; > - > - switch (env->mmu_model) { > -#if defined(TARGET_PPC64) > - case POWERPC_MMU_64B: > - case POWERPC_MMU_2_03: > - case POWERPC_MMU_2_06: > - case POWERPC_MMU_2_07: > - return ppc_hash64_get_phys_page_debug(cpu, addr); > - case POWERPC_MMU_3_00: > - return ppc64_v3_get_phys_page_debug(cpu, addr); > -#endif > - > - case POWERPC_MMU_32B: > - case POWERPC_MMU_601: > - return ppc_hash32_get_phys_page_debug(cpu, addr); > - > - default: > - ; > - } > - > - if (unlikely(get_physical_address(env, &ctx, addr, MMU_DATA_LOAD, > - ACCESS_INT) != 0)) { > + ppcemb_tlb_t *tlb; > + hwaddr raddr; > + int i, ret; > > - /* > - * Some MMUs have separate TLBs for code and data. If we only > - * try an ACCESS_INT, we may not be able to read instructions > - * mapped by code TLBs, so we also try a ACCESS_CODE. > - */ > - if (unlikely(get_physical_address(env, &ctx, addr, MMU_INST_FETCH, > - ACCESS_CODE) != 0)) { > - return -1; > + /* Default return value is no match */ > + ret = -1; > + for (i = 0; i < env->nb_tlb; i++) { > + tlb = &env->tlb.tlbe[i]; > + if (ppcemb_tlb_check(env, tlb, &raddr, address, pid, 0, i) == 0) { > + ret = i; > + break; > } > } > > - return ctx.raddr & TARGET_PAGE_MASK; > + return ret; > } > > -static void booke206_update_mas_tlb_miss(CPUPPCState *env, target_ulong address, > - MMUAccessType access_type, int mmu_idx) > +/* Helpers specific to PowerPC 40x implementations */ > +static inline void ppc4xx_tlb_invalidate_all(CPUPPCState *env) > { > - uint32_t epid; > - bool as, pr; > - uint32_t missed_tid = 0; > - bool use_epid = mmubooke206_get_as(env, mmu_idx, &epid, &as, &pr); > - > - if (access_type == MMU_INST_FETCH) { > - as = msr_ir; > - } > - env->spr[SPR_BOOKE_MAS0] = env->spr[SPR_BOOKE_MAS4] & MAS4_TLBSELD_MASK; > - env->spr[SPR_BOOKE_MAS1] = env->spr[SPR_BOOKE_MAS4] & MAS4_TSIZED_MASK; > - env->spr[SPR_BOOKE_MAS2] = env->spr[SPR_BOOKE_MAS4] & MAS4_WIMGED_MASK; > - env->spr[SPR_BOOKE_MAS3] = 0; > - env->spr[SPR_BOOKE_MAS6] = 0; > - env->spr[SPR_BOOKE_MAS7] = 0; > - > - /* AS */ > - if (as) { > - env->spr[SPR_BOOKE_MAS1] |= MAS1_TS; > - env->spr[SPR_BOOKE_MAS6] |= MAS6_SAS; > - } > - > - env->spr[SPR_BOOKE_MAS1] |= MAS1_VALID; > - env->spr[SPR_BOOKE_MAS2] |= address & MAS2_EPN_MASK; > + ppcemb_tlb_t *tlb; > + int i; > > - if (!use_epid) { > - switch (env->spr[SPR_BOOKE_MAS4] & MAS4_TIDSELD_PIDZ) { > - case MAS4_TIDSELD_PID0: > - missed_tid = env->spr[SPR_BOOKE_PID]; > - break; > - case MAS4_TIDSELD_PID1: > - missed_tid = env->spr[SPR_BOOKE_PID1]; > - break; > - case MAS4_TIDSELD_PID2: > - missed_tid = env->spr[SPR_BOOKE_PID2]; > - break; > - } > - env->spr[SPR_BOOKE_MAS6] |= env->spr[SPR_BOOKE_PID] << 16; > - } else { > - missed_tid = epid; > - env->spr[SPR_BOOKE_MAS6] |= missed_tid << 16; > + for (i = 0; i < env->nb_tlb; i++) { > + tlb = &env->tlb.tlbe[i]; > + tlb->prot &= ~PAGE_VALID; > } > - env->spr[SPR_BOOKE_MAS1] |= (missed_tid << MAS1_TID_SHIFT); > - > - > - /* next victim logic */ > - env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_ESEL_SHIFT; > - env->last_way++; > - env->last_way &= booke206_tlb_ways(env, 0) - 1; > - env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_NV_SHIFT; > + tlb_flush(env_cpu(env)); > } > > -/* Perform address translation */ > -static int cpu_ppc_handle_mmu_fault(CPUPPCState *env, target_ulong address, > - MMUAccessType access_type, int mmu_idx) > +static void booke206_flush_tlb(CPUPPCState *env, int flags, > + const int check_iprot) > { > - CPUState *cs = env_cpu(env); > - PowerPCCPU *cpu = POWERPC_CPU(cs); > - mmu_ctx_t ctx; > - int type; > - int ret = 0; > + int tlb_size; > + int i, j; > + ppcmas_tlb_t *tlb = env->tlb.tlbm; > > - if (access_type == MMU_INST_FETCH) { > - /* code access */ > - type = ACCESS_CODE; > - } else { > - /* data access */ > - type = env->access_type; > - } > - ret = get_physical_address_wtlb(env, &ctx, address, access_type, > - type, mmu_idx); > - if (ret == 0) { > - tlb_set_page(cs, address & TARGET_PAGE_MASK, > - ctx.raddr & TARGET_PAGE_MASK, ctx.prot, > - mmu_idx, TARGET_PAGE_SIZE); > - ret = 0; > - } else if (ret < 0) { > - LOG_MMU_STATE(cs); > - if (type == ACCESS_CODE) { > - switch (ret) { > - case -1: > - /* No matches in page tables or TLB */ > - switch (env->mmu_model) { > - case POWERPC_MMU_SOFT_6xx: > - cs->exception_index = POWERPC_EXCP_IFTLB; > - env->error_code = 1 << 18; > - env->spr[SPR_IMISS] = address; > - env->spr[SPR_ICMP] = 0x80000000 | ctx.ptem; > - goto tlb_miss; > - case POWERPC_MMU_SOFT_74xx: > - cs->exception_index = POWERPC_EXCP_IFTLB; > - goto tlb_miss_74xx; > - case POWERPC_MMU_SOFT_4xx: > - case POWERPC_MMU_SOFT_4xx_Z: > - cs->exception_index = POWERPC_EXCP_ITLB; > - env->error_code = 0; > - env->spr[SPR_40x_DEAR] = address; > - env->spr[SPR_40x_ESR] = 0x00000000; > - break; > - case POWERPC_MMU_BOOKE206: > - booke206_update_mas_tlb_miss(env, address, 2, mmu_idx); > - /* fall through */ > - case POWERPC_MMU_BOOKE: > - cs->exception_index = POWERPC_EXCP_ITLB; > - env->error_code = 0; > - env->spr[SPR_BOOKE_DEAR] = address; > - env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx, MMU_DATA_LOAD); > - return -1; > - case POWERPC_MMU_MPC8xx: > - /* XXX: TODO */ > - cpu_abort(cs, "MPC8xx MMU model is not implemented\n"); > - break; > - case POWERPC_MMU_REAL: > - cpu_abort(cs, "PowerPC in real mode should never raise " > - "any MMU exceptions\n"); > - return -1; > - default: > - cpu_abort(cs, "Unknown or invalid MMU model\n"); > - return -1; > - } > - break; > - case -2: > - /* Access rights violation */ > - cs->exception_index = POWERPC_EXCP_ISI; > - env->error_code = 0x08000000; > - break; > - case -3: > - /* No execute protection violation */ > - if ((env->mmu_model == POWERPC_MMU_BOOKE) || > - (env->mmu_model == POWERPC_MMU_BOOKE206)) { > - env->spr[SPR_BOOKE_ESR] = 0x00000000; > - } > - cs->exception_index = POWERPC_EXCP_ISI; > - env->error_code = 0x10000000; > - break; > - case -4: > - /* Direct store exception */ > - /* No code fetch is allowed in direct-store areas */ > - cs->exception_index = POWERPC_EXCP_ISI; > - env->error_code = 0x10000000; > - break; > - } > - } else { > - switch (ret) { > - case -1: > - /* No matches in page tables or TLB */ > - switch (env->mmu_model) { > - case POWERPC_MMU_SOFT_6xx: > - if (access_type == MMU_DATA_STORE) { > - cs->exception_index = POWERPC_EXCP_DSTLB; > - env->error_code = 1 << 16; > - } else { > - cs->exception_index = POWERPC_EXCP_DLTLB; > - env->error_code = 0; > - } > - env->spr[SPR_DMISS] = address; > - env->spr[SPR_DCMP] = 0x80000000 | ctx.ptem; > - tlb_miss: > - env->error_code |= ctx.key << 19; > - env->spr[SPR_HASH1] = ppc_hash32_hpt_base(cpu) + > - get_pteg_offset32(cpu, ctx.hash[0]); > - env->spr[SPR_HASH2] = ppc_hash32_hpt_base(cpu) + > - get_pteg_offset32(cpu, ctx.hash[1]); > - break; > - case POWERPC_MMU_SOFT_74xx: > - if (access_type == MMU_DATA_STORE) { > - cs->exception_index = POWERPC_EXCP_DSTLB; > - } else { > - cs->exception_index = POWERPC_EXCP_DLTLB; > - } > - tlb_miss_74xx: > - /* Implement LRU algorithm */ > - env->error_code = ctx.key << 19; > - env->spr[SPR_TLBMISS] = (address & ~((target_ulong)0x3)) | > - ((env->last_way + 1) & (env->nb_ways - 1)); > - env->spr[SPR_PTEHI] = 0x80000000 | ctx.ptem; > - break; > - case POWERPC_MMU_SOFT_4xx: > - case POWERPC_MMU_SOFT_4xx_Z: > - cs->exception_index = POWERPC_EXCP_DTLB; > - env->error_code = 0; > - env->spr[SPR_40x_DEAR] = address; > - if (access_type == MMU_DATA_STORE) { > - env->spr[SPR_40x_ESR] = 0x00800000; > - } else { > - env->spr[SPR_40x_ESR] = 0x00000000; > - } > - break; > - case POWERPC_MMU_MPC8xx: > - /* XXX: TODO */ > - cpu_abort(cs, "MPC8xx MMU model is not implemented\n"); > - break; > - case POWERPC_MMU_BOOKE206: > - booke206_update_mas_tlb_miss(env, address, access_type, mmu_idx); > - /* fall through */ > - case POWERPC_MMU_BOOKE: > - cs->exception_index = POWERPC_EXCP_DTLB; > - env->error_code = 0; > - env->spr[SPR_BOOKE_DEAR] = address; > - env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx, access_type); > - return -1; > - case POWERPC_MMU_REAL: > - cpu_abort(cs, "PowerPC in real mode should never raise " > - "any MMU exceptions\n"); > - return -1; > - default: > - cpu_abort(cs, "Unknown or invalid MMU model\n"); > - return -1; > - } > - break; > - case -2: > - /* Access rights violation */ > - cs->exception_index = POWERPC_EXCP_DSI; > - env->error_code = 0; > - if (env->mmu_model == POWERPC_MMU_SOFT_4xx > - || env->mmu_model == POWERPC_MMU_SOFT_4xx_Z) { > - env->spr[SPR_40x_DEAR] = address; > - if (access_type == MMU_DATA_STORE) { > - env->spr[SPR_40x_ESR] |= 0x00800000; > - } > - } else if ((env->mmu_model == POWERPC_MMU_BOOKE) || > - (env->mmu_model == POWERPC_MMU_BOOKE206)) { > - env->spr[SPR_BOOKE_DEAR] = address; > - env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx, access_type); > - } else { > - env->spr[SPR_DAR] = address; > - if (access_type == MMU_DATA_STORE) { > - env->spr[SPR_DSISR] = 0x0A000000; > - } else { > - env->spr[SPR_DSISR] = 0x08000000; > - } > - } > - break; > - case -4: > - /* Direct store exception */ > - switch (type) { > - case ACCESS_FLOAT: > - /* Floating point load/store */ > - cs->exception_index = POWERPC_EXCP_ALIGN; > - env->error_code = POWERPC_EXCP_ALIGN_FP; > - env->spr[SPR_DAR] = address; > - break; > - case ACCESS_RES: > - /* lwarx, ldarx or stwcx. */ > - cs->exception_index = POWERPC_EXCP_DSI; > - env->error_code = 0; > - env->spr[SPR_DAR] = address; > - if (access_type == MMU_DATA_STORE) { > - env->spr[SPR_DSISR] = 0x06000000; > - } else { > - env->spr[SPR_DSISR] = 0x04000000; > - } > - break; > - case ACCESS_EXT: > - /* eciwx or ecowx */ > - cs->exception_index = POWERPC_EXCP_DSI; > - env->error_code = 0; > - env->spr[SPR_DAR] = address; > - if (access_type == MMU_DATA_STORE) { > - env->spr[SPR_DSISR] = 0x06100000; > - } else { > - env->spr[SPR_DSISR] = 0x04100000; > - } > - break; > - default: > - printf("DSI: invalid exception (%d)\n", ret); > - cs->exception_index = POWERPC_EXCP_PROGRAM; > - env->error_code = > - POWERPC_EXCP_INVAL | POWERPC_EXCP_INVAL_INVAL; > - env->spr[SPR_DAR] = address; > - break; > + for (i = 0; i < BOOKE206_MAX_TLBN; i++) { > + if (flags & (1 << i)) { > + tlb_size = booke206_tlb_size(env, i); > + for (j = 0; j < tlb_size; j++) { > + if (!check_iprot || !(tlb[j].mas1 & MAS1_IPROT)) { > + tlb[j].mas1 &= ~MAS1_VALID; > } > - break; > } > } > - ret = 1; > + tlb += booke206_tlb_size(env, i); > } > > - return ret; > + tlb_flush(env_cpu(env)); > } > > -#ifdef CONFIG_TCG > + > /*****************************************************************************/ > /* BATs management */ > #if !defined(FLUSH_ALL_TLBS) > @@ -1952,9 +372,7 @@ void helper_store_601_batl(CPUPPCState *env, uint32_t nr, target_ulong value) > #endif > } > } > -#endif > > -#ifdef CONFIG_TCG > /*****************************************************************************/ > /* TLB management */ > void ppc_tlb_invalidate_all(CPUPPCState *env) > @@ -1998,9 +416,7 @@ void ppc_tlb_invalidate_all(CPUPPCState *env) > break; > } > } > -#endif > > -#ifdef CONFIG_TCG > void ppc_tlb_invalidate_one(CPUPPCState *env, target_ulong addr) > { > #if !defined(FLUSH_ALL_TLBS) > @@ -2942,30 +1358,6 @@ void helper_check_tlb_flush_global(CPUPPCState *env) > { > check_tlb_flush(env, true); > } > -#endif /* CONFIG_TCG */ > > /*****************************************************************************/ > > -bool ppc_cpu_tlb_fill(CPUState *cs, vaddr addr, int size, > - MMUAccessType access_type, int mmu_idx, > - bool probe, uintptr_t retaddr) > -{ > - PowerPCCPU *cpu = POWERPC_CPU(cs); > - PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cs); > - CPUPPCState *env = &cpu->env; > - int ret; > - > - if (pcc->handle_mmu_fault) { > - ret = pcc->handle_mmu_fault(cpu, addr, access_type, mmu_idx); > - } else { > - ret = cpu_ppc_handle_mmu_fault(env, addr, access_type, mmu_idx); > - } > - if (unlikely(ret != 0)) { > - if (probe) { > - return false; > - } > - raise_exception_err_ra(env, cs->exception_index, env->error_code, > - retaddr); > - } > - return true; > -}
On 06/06/2021 23:31, David Gibson wrote: > On Wed, Jun 02, 2021 at 04:26:02PM -0300, Lucas Mateus Castro (alqotel) wrote: >> Moved functions in mmu_helper.c that should be compiled in build to >> mmu_common.c, moved declaration of functions that both files use to >> cpu.h and moved struct declarations and inline functions needed by >> both to target/ppc/internal.h. Updated meson.build to compile the >> new file. >> >> Signed-off-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br> >> --- >> Had to turn a few functions non static as it was used by both >> mmu_common.c and mmu_helper.c. Added the declaration of mmu_ctx_t to >> cpu.h so functions there can reference it and added the definition to >> internal.h so functions in both mmu_* files can access it. >> And maybe the tlb functions should be declared in internal.h instead of >> cpu.h. >> --- >> target/ppc/cpu.h | 35 + >> target/ppc/internal.h | 26 + >> target/ppc/meson.build | 6 +- >> target/ppc/mmu_common.c | 1606 ++++++++++++++++++++++++++++++++++ >> target/ppc/mmu_helper.c | 1814 +++------------------------------------ >> 5 files changed, 1774 insertions(+), 1713 deletions(-) >> create mode 100644 target/ppc/mmu_common.c >> >> diff --git a/target/ppc/cpu.h b/target/ppc/cpu.h >> index b0934d9be4..cfc35ef83e 100644 >> --- a/target/ppc/cpu.h >> +++ b/target/ppc/cpu.h >> @@ -1329,6 +1329,41 @@ void store_booke_tsr(CPUPPCState *env, target_ulong val); >> void ppc_tlb_invalidate_all(CPUPPCState *env); >> void ppc_tlb_invalidate_one(CPUPPCState *env, target_ulong addr); >> void cpu_ppc_set_vhyp(PowerPCCPU *cpu, PPCVirtualHypervisor *vhyp); >> + >> +typedef struct mmu_ctx_t mmu_ctx_t; >> +int ppcemb_tlb_check(CPUPPCState *env, ppcemb_tlb_t *tlb, >> + hwaddr *raddrp, >> + target_ulong address, uint32_t pid, int ext, >> + int i); >> +int get_physical_address_wtlb(CPUPPCState *env, mmu_ctx_t *ctx, >> + target_ulong eaddr, >> + MMUAccessType access_type, int type, >> + int mmu_idx); >> +hwaddr booke206_tlb_to_page_size(CPUPPCState *env, >> + ppcmas_tlb_t *tlb); >> +int ppcmas_tlb_check(CPUPPCState *env, ppcmas_tlb_t *tlb, >> + hwaddr *raddrp, target_ulong address, >> + uint32_t pid); >> +int get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, >> + target_ulong eaddr, MMUAccessType access_type, >> + int type); >> +static inline int ppc6xx_tlb_getnum(CPUPPCState *env, target_ulong eaddr, >> + int way, int is_code) >> +{ >> + int nr; >> + >> + /* Select TLB num in a way from address */ >> + nr = (eaddr >> TARGET_PAGE_BITS) & (env->tlb_per_way - 1); >> + /* Select TLB way */ >> + nr += env->tlb_per_way * way; >> + /* 6xx have separate TLBs for instructions and data */ >> + if (is_code && env->id_tlbs == 1) { >> + nr += env->nb_tlb; >> + } >> + >> + return nr; >> +} > This is a rather complex and model specific function to have inline in > a header. What is the best way to deal with this function? It's used by both mmu_helper.c and mmu_common.c so I put it there as a way to keep it being an inline function, so it would be best to put it in target/ppc/internal.h or maybe just turn it into a not inline function? >> + >> #endif >> #endif >> >> diff --git a/target/ppc/internal.h b/target/ppc/internal.h >> index 2b4b06eb76..7d2913ec28 100644 >> --- a/target/ppc/internal.h >> +++ b/target/ppc/internal.h >> @@ -247,4 +247,30 @@ static inline int prot_for_access_type(MMUAccessType access_type) >> g_assert_not_reached(); >> } >> >> +/* Context used internally during MMU translations */ >> + >> +struct mmu_ctx_t { >> + hwaddr raddr; /* Real address */ >> + hwaddr eaddr; /* Effective address */ >> + int prot; /* Protection bits */ >> + hwaddr hash[2]; /* Pagetable hash values */ >> + target_ulong ptem; /* Virtual segment ID | API */ >> + int key; /* Access key */ >> + int nx; /* Non-execute area */ >> +}; >> + >> +/* Common routines used by software and hardware TLBs emulation */ >> +static inline int pte_is_valid(target_ulong pte0) >> +{ >> + return pte0 & 0x80000000 ? 1 : 0; >> +} >> + >> +static inline void pte_invalidate(target_ulong *pte0) >> +{ >> + *pte0 &= ~0x80000000; >> +} >> + >> +#define PTE_PTEM_MASK 0x7FFFFFBF >> +#define PTE_CHECK_MASK (TARGET_PAGE_MASK | 0x7B) >> + >> #endif /* PPC_INTERNAL_H */ >> diff --git a/target/ppc/meson.build b/target/ppc/meson.build >> index a6a53a8d5c..a54445d0da 100644 >> --- a/target/ppc/meson.build >> +++ b/target/ppc/meson.build >> @@ -28,10 +28,12 @@ ppc_softmmu_ss.add(files( >> 'arch_dump.c', >> 'machine.c', >> 'mmu-hash32.c', >> - 'mmu_helper.c', >> + 'mmu_common.c', >> 'monitor.c', >> )) >> -ppc_softmmu_ss.add(when: 'CONFIG_TCG', if_false: files( >> +ppc_softmmu_ss.add(when: 'CONFIG_TCG', if_true: files( >> + 'mmu_helper.c', >> +), if_false: files( >> 'tcg-stub.c' >> )) >> >> diff --git a/target/ppc/mmu_common.c b/target/ppc/mmu_common.c >> new file mode 100644 >> index 0000000000..d95399d67f >> --- /dev/null >> +++ b/target/ppc/mmu_common.c >> @@ -0,0 +1,1606 @@ >> +/* >> + * PowerPC CPU initialization for qemu. >> + * >> + * Copyright (C) 2021 Instituto de Pesquisas Eldorado (eldorado.org.br) >> + * >> + * 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 2.1 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 "qemu/osdep.h" >> +#include "qemu/units.h" >> +#include "cpu.h" >> +#include "sysemu/kvm.h" >> +#include "kvm_ppc.h" >> +#include "mmu-hash64.h" >> +#include "mmu-hash32.h" >> +#include "exec/exec-all.h" >> +#include "exec/log.h" >> +#include "helper_regs.h" >> +#include "qemu/error-report.h" >> +#include "qemu/main-loop.h" >> +#include "qemu/qemu-print.h" >> +#include "internal.h" >> +#include "mmu-book3s-v3.h" >> +#include "mmu-radix64.h" >> + >> +/* #define DEBUG_MMU */ >> +/* #define DEBUG_BATS */ >> +/* #define DEBUG_SOFTWARE_TLB */ >> +/* #define DUMP_PAGE_TABLES */ >> +/* #define FLUSH_ALL_TLBS */ >> + >> +#ifdef DEBUG_MMU >> +# define LOG_MMU_STATE(cpu) log_cpu_state_mask(CPU_LOG_MMU, (cpu), 0) >> +#else >> +# define LOG_MMU_STATE(cpu) do { } while (0) >> +#endif >> + >> +#ifdef DEBUG_SOFTWARE_TLB >> +# define LOG_SWTLB(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__) >> +#else >> +# define LOG_SWTLB(...) do { } while (0) >> +#endif >> + >> +#ifdef DEBUG_BATS >> +# define LOG_BATS(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__) >> +#else >> +# define LOG_BATS(...) do { } while (0) >> +#endif >> + >> +/*****************************************************************************/ >> +/* PowerPC MMU emulation */ >> + >> +static int pp_check(int key, int pp, int nx) >> +{ >> + int access; >> + >> + /* Compute access rights */ >> + access = 0; >> + if (key == 0) { >> + switch (pp) { >> + case 0x0: >> + case 0x1: >> + case 0x2: >> + access |= PAGE_WRITE; >> + /* fall through */ >> + case 0x3: >> + access |= PAGE_READ; >> + break; >> + } >> + } else { >> + switch (pp) { >> + case 0x0: >> + access = 0; >> + break; >> + case 0x1: >> + case 0x3: >> + access = PAGE_READ; >> + break; >> + case 0x2: >> + access = PAGE_READ | PAGE_WRITE; >> + break; >> + } >> + } >> + if (nx == 0) { >> + access |= PAGE_EXEC; >> + } >> + >> + return access; >> +} >> + >> +static int check_prot(int prot, MMUAccessType access_type) >> +{ >> + return prot & prot_for_access_type(access_type) ? 0 : -2; >> +} >> + >> +static int pte_update_flags(mmu_ctx_t *ctx, target_ulong *pte1p, >> + int ret, MMUAccessType access_type) >> +{ >> + int store = 0; >> + >> + /* Update page flags */ >> + if (!(*pte1p & 0x00000100)) { >> + /* Update accessed flag */ >> + *pte1p |= 0x00000100; >> + store = 1; >> + } >> + if (!(*pte1p & 0x00000080)) { >> + if (access_type == MMU_DATA_STORE && ret == 0) { >> + /* Update changed flag */ >> + *pte1p |= 0x00000080; >> + store = 1; >> + } else { >> + /* Force page fault for first write access */ >> + ctx->prot &= ~PAGE_WRITE; >> + } >> + } >> + >> + return store; >> +} >> + >> +static int ppc6xx_tlb_pte_check(mmu_ctx_t *ctx, target_ulong pte0, >> + target_ulong pte1, int h, >> + MMUAccessType access_type) >> +{ >> + target_ulong ptem, mmask; >> + int access, ret, pteh, ptev, pp; >> + >> + ret = -1; >> + /* Check validity and table match */ >> + ptev = pte_is_valid(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_mask(CPU_LOG_MMU, "Bad RPN/WIMG/PP\n"); >> + return -3; >> + } >> + } >> + /* Compute access rights */ >> + access = pp_check(ctx->key, pp, ctx->nx); >> + /* Keep the matching PTE information */ >> + ctx->raddr = pte1; >> + ctx->prot = access; >> + ret = check_prot(ctx->prot, access_type); >> + if (ret == 0) { >> + /* Access granted */ >> + qemu_log_mask(CPU_LOG_MMU, "PTE access granted !\n"); >> + } else { >> + /* Access right violation */ >> + qemu_log_mask(CPU_LOG_MMU, "PTE access rejected\n"); >> + } >> + } >> + } >> + >> + return ret; >> +} >> + >> +static int ppc6xx_tlb_check(CPUPPCState *env, mmu_ctx_t *ctx, >> + target_ulong eaddr, MMUAccessType access_type) >> +{ >> + ppc6xx_tlb_t *tlb; >> + int nr, best, way; >> + int ret; >> + >> + best = -1; >> + ret = -1; /* No TLB found */ >> + for (way = 0; way < env->nb_ways; way++) { >> + nr = ppc6xx_tlb_getnum(env, eaddr, way, access_type == MMU_INST_FETCH); >> + tlb = &env->tlb.tlb6[nr]; >> + /* This test "emulates" the PTE index match for hardware TLBs */ >> + if ((eaddr & TARGET_PAGE_MASK) != tlb->EPN) { >> + LOG_SWTLB("TLB %d/%d %s [" TARGET_FMT_lx " " TARGET_FMT_lx >> + "] <> " TARGET_FMT_lx "\n", nr, env->nb_tlb, >> + pte_is_valid(tlb->pte0) ? "valid" : "inval", >> + tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE, eaddr); >> + continue; >> + } >> + LOG_SWTLB("TLB %d/%d %s " TARGET_FMT_lx " <> " TARGET_FMT_lx " " >> + TARGET_FMT_lx " %c %c\n", nr, env->nb_tlb, >> + pte_is_valid(tlb->pte0) ? "valid" : "inval", >> + tlb->EPN, eaddr, tlb->pte1, >> + access_type == MMU_DATA_STORE ? 'S' : 'L', >> + access_type == MMU_INST_FETCH ? 'I' : 'D'); >> + switch (ppc6xx_tlb_pte_check(ctx, tlb->pte0, tlb->pte1, >> + 0, access_type)) { >> + case -3: >> + /* TLB inconsistency */ >> + return -1; >> + case -2: >> + /* Access violation */ >> + ret = -2; >> + best = nr; >> + break; >> + case -1: >> + default: >> + /* No match */ >> + break; >> + case 0: >> + /* access granted */ >> + /* >> + * XXX: we should go on looping to check all TLBs >> + * consistency but we can speed-up the whole thing as >> + * the result would be undefined if TLBs are not >> + * consistent. >> + */ >> + ret = 0; >> + best = nr; >> + goto done; >> + } >> + } >> + if (best != -1) { >> + done: >> + LOG_SWTLB("found TLB at addr " TARGET_FMT_plx " prot=%01x ret=%d\n", >> + ctx->raddr & TARGET_PAGE_MASK, ctx->prot, ret); >> + /* Update page flags */ >> + pte_update_flags(ctx, &env->tlb.tlb6[best].pte1, ret, access_type); >> + } >> + >> + return ret; >> +} >> + >> +/* Perform BAT hit & translation */ >> +static inline void bat_size_prot(CPUPPCState *env, target_ulong *blp, >> + int *validp, int *protp, target_ulong *BATu, >> + target_ulong *BATl) >> +{ >> + target_ulong bl; >> + int pp, valid, prot; >> + >> + bl = (*BATu & 0x00001FFC) << 15; >> + valid = 0; >> + prot = 0; >> + if (((msr_pr == 0) && (*BATu & 0x00000002)) || >> + ((msr_pr != 0) && (*BATu & 0x00000001))) { >> + valid = 1; >> + pp = *BATl & 0x00000003; >> + if (pp != 0) { >> + prot = PAGE_READ | PAGE_EXEC; >> + if (pp == 0x2) { >> + prot |= PAGE_WRITE; >> + } >> + } >> + } >> + *blp = bl; >> + *validp = valid; >> + *protp = prot; >> +} >> + >> +static int get_bat_6xx_tlb(CPUPPCState *env, mmu_ctx_t *ctx, >> + target_ulong virtual, MMUAccessType access_type) >> +{ >> + target_ulong *BATlt, *BATut, *BATu, *BATl; >> + target_ulong BEPIl, BEPIu, bl; >> + int i, valid, prot; >> + int ret = -1; >> + bool ifetch = access_type == MMU_INST_FETCH; >> + >> + LOG_BATS("%s: %cBAT v " TARGET_FMT_lx "\n", __func__, >> + ifetch ? 'I' : 'D', virtual); >> + if (ifetch) { >> + BATlt = env->IBAT[1]; >> + BATut = env->IBAT[0]; >> + } else { >> + BATlt = env->DBAT[1]; >> + BATut = env->DBAT[0]; >> + } >> + for (i = 0; i < env->nb_BATs; i++) { >> + BATu = &BATut[i]; >> + BATl = &BATlt[i]; >> + BEPIu = *BATu & 0xF0000000; >> + BEPIl = *BATu & 0x0FFE0000; >> + bat_size_prot(env, &bl, &valid, &prot, BATu, BATl); >> + LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx >> + " BATl " TARGET_FMT_lx "\n", __func__, >> + ifetch ? 'I' : 'D', i, virtual, *BATu, *BATl); >> + if ((virtual & 0xF0000000) == BEPIu && >> + ((virtual & 0x0FFE0000) & ~bl) == BEPIl) { >> + /* BAT matches */ >> + if (valid != 0) { >> + /* Get physical address */ >> + ctx->raddr = (*BATl & 0xF0000000) | >> + ((virtual & 0x0FFE0000 & bl) | (*BATl & 0x0FFE0000)) | >> + (virtual & 0x0001F000); >> + /* Compute access rights */ >> + ctx->prot = prot; >> + ret = check_prot(ctx->prot, access_type); >> + if (ret == 0) { >> + LOG_BATS("BAT %d match: r " TARGET_FMT_plx " prot=%c%c\n", >> + i, ctx->raddr, ctx->prot & PAGE_READ ? 'R' : '-', >> + ctx->prot & PAGE_WRITE ? 'W' : '-'); >> + } >> + break; >> + } >> + } >> + } >> + if (ret < 0) { >> +#if defined(DEBUG_BATS) >> + if (qemu_log_enabled()) { >> + LOG_BATS("no BAT match for " TARGET_FMT_lx ":\n", virtual); >> + for (i = 0; i < 4; i++) { >> + BATu = &BATut[i]; >> + BATl = &BATlt[i]; >> + BEPIu = *BATu & 0xF0000000; >> + BEPIl = *BATu & 0x0FFE0000; >> + bl = (*BATu & 0x00001FFC) << 15; >> + LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx >> + " BATl " TARGET_FMT_lx "\n\t" TARGET_FMT_lx " " >> + TARGET_FMT_lx " " TARGET_FMT_lx "\n", >> + __func__, ifetch ? 'I' : 'D', i, virtual, >> + *BATu, *BATl, BEPIu, BEPIl, bl); >> + } >> + } >> +#endif >> + } >> + /* No hit */ >> + return ret; >> +} >> + >> +/* Perform segment based translation */ >> +static int get_segment_6xx_tlb(CPUPPCState *env, mmu_ctx_t *ctx, >> + target_ulong eaddr, MMUAccessType access_type, >> + int type) >> +{ >> + PowerPCCPU *cpu = env_archcpu(env); >> + hwaddr hash; >> + target_ulong vsid; >> + int ds, pr, target_page_bits; >> + int ret; >> + target_ulong sr, pgidx; >> + >> + pr = msr_pr; >> + ctx->eaddr = eaddr; >> + >> + sr = env->sr[eaddr >> 28]; >> + ctx->key = (((sr & 0x20000000) && (pr != 0)) || >> + ((sr & 0x40000000) && (pr == 0))) ? 1 : 0; >> + ds = sr & 0x80000000 ? 1 : 0; >> + ctx->nx = sr & 0x10000000 ? 1 : 0; >> + vsid = sr & 0x00FFFFFF; >> + target_page_bits = TARGET_PAGE_BITS; >> + qemu_log_mask(CPU_LOG_MMU, >> + "Check segment v=" TARGET_FMT_lx " %d " TARGET_FMT_lx >> + " nip=" TARGET_FMT_lx " lr=" TARGET_FMT_lx >> + " ir=%d dr=%d pr=%d %d t=%d\n", >> + eaddr, (int)(eaddr >> 28), sr, env->nip, env->lr, (int)msr_ir, >> + (int)msr_dr, pr != 0 ? 1 : 0, access_type == MMU_DATA_STORE, type); >> + pgidx = (eaddr & ~SEGMENT_MASK_256M) >> target_page_bits; >> + hash = vsid ^ pgidx; >> + ctx->ptem = (vsid << 7) | (pgidx >> 10); >> + >> + qemu_log_mask(CPU_LOG_MMU, >> + "pte segment: key=%d ds %d nx %d vsid " TARGET_FMT_lx "\n", >> + ctx->key, ds, ctx->nx, vsid); >> + ret = -1; >> + if (!ds) { >> + /* Check if instruction fetch is allowed, if needed */ >> + if (type != ACCESS_CODE || ctx->nx == 0) { >> + /* Page address translation */ >> + qemu_log_mask(CPU_LOG_MMU, "htab_base " TARGET_FMT_plx >> + " htab_mask " TARGET_FMT_plx >> + " hash " TARGET_FMT_plx "\n", >> + ppc_hash32_hpt_base(cpu), ppc_hash32_hpt_mask(cpu), hash); >> + ctx->hash[0] = hash; >> + ctx->hash[1] = ~hash; >> + >> + /* Initialize real address with an invalid value */ >> + ctx->raddr = (hwaddr)-1ULL; >> + /* Software TLB search */ >> + ret = ppc6xx_tlb_check(env, ctx, eaddr, access_type); >> +#if defined(DUMP_PAGE_TABLES) >> + if (qemu_loglevel_mask(CPU_LOG_MMU)) { >> + CPUState *cs = env_cpu(env); >> + hwaddr curaddr; >> + uint32_t a0, a1, a2, a3; >> + >> + qemu_log("Page table: " TARGET_FMT_plx " len " TARGET_FMT_plx >> + "\n", ppc_hash32_hpt_base(cpu), >> + ppc_hash32_hpt_mask(env) + 0x80); >> + for (curaddr = ppc_hash32_hpt_base(cpu); >> + curaddr < (ppc_hash32_hpt_base(cpu) >> + + ppc_hash32_hpt_mask(cpu) + 0x80); >> + curaddr += 16) { >> + a0 = ldl_phys(cs->as, curaddr); >> + a1 = ldl_phys(cs->as, curaddr + 4); >> + a2 = ldl_phys(cs->as, curaddr + 8); >> + a3 = ldl_phys(cs->as, curaddr + 12); >> + if (a0 != 0 || a1 != 0 || a2 != 0 || a3 != 0) { >> + qemu_log(TARGET_FMT_plx ": %08x %08x %08x %08x\n", >> + curaddr, a0, a1, a2, a3); >> + } >> + } >> + } >> +#endif >> + } else { >> + qemu_log_mask(CPU_LOG_MMU, "No access allowed\n"); >> + ret = -3; >> + } >> + } else { >> + target_ulong sr; >> + >> + qemu_log_mask(CPU_LOG_MMU, "direct store...\n"); >> + /* Direct-store segment : absolutely *BUGGY* for now */ >> + >> + /* >> + * Direct-store implies a 32-bit MMU. >> + * Check the Segment Register's bus unit ID (BUID). >> + */ >> + sr = env->sr[eaddr >> 28]; >> + if ((sr & 0x1FF00000) >> 20 == 0x07f) { >> + /* >> + * Memory-forced I/O controller interface access >> + * >> + * If T=1 and BUID=x'07F', the 601 performs a memory >> + * access to SR[28-31] LA[4-31], bypassing all protection >> + * mechanisms. >> + */ >> + ctx->raddr = ((sr & 0xF) << 28) | (eaddr & 0x0FFFFFFF); >> + ctx->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; >> + return 0; >> + } >> + >> + switch (type) { >> + case ACCESS_INT: >> + /* Integer load/store : only access allowed */ >> + break; >> + case ACCESS_CODE: >> + /* No code fetch is allowed in direct-store areas */ >> + return -4; >> + case ACCESS_FLOAT: >> + /* Floating point load/store */ >> + return -4; >> + case ACCESS_RES: >> + /* lwarx, ldarx or srwcx. */ >> + return -4; >> + case ACCESS_CACHE: >> + /* >> + * dcba, dcbt, dcbtst, dcbf, dcbi, dcbst, dcbz, or icbi >> + * >> + * Should make the instruction do no-op. As it already do >> + * no-op, it's quite easy :-) >> + */ >> + ctx->raddr = eaddr; >> + return 0; >> + case ACCESS_EXT: >> + /* eciwx or ecowx */ >> + return -4; >> + default: >> + qemu_log_mask(CPU_LOG_MMU, "ERROR: instruction should not need " >> + "address translation\n"); >> + return -4; >> + } >> + if ((access_type == MMU_DATA_STORE || ctx->key != 1) && >> + (access_type == MMU_DATA_LOAD || ctx->key != 0)) { >> + ctx->raddr = eaddr; >> + ret = 2; >> + } else { >> + ret = -2; >> + } >> + } >> + >> + return ret; >> +} >> + >> +/* Generic TLB check function for embedded PowerPC implementations */ >> +int ppcemb_tlb_check(CPUPPCState *env, ppcemb_tlb_t *tlb, >> + hwaddr *raddrp, >> + target_ulong address, uint32_t pid, int ext, >> + int i) >> +{ >> + target_ulong mask; >> + >> + /* Check valid flag */ >> + if (!(tlb->prot & PAGE_VALID)) { >> + return -1; >> + } >> + mask = ~(tlb->size - 1); >> + LOG_SWTLB("%s: TLB %d address " TARGET_FMT_lx " PID %u <=> " TARGET_FMT_lx >> + " " TARGET_FMT_lx " %u %x\n", __func__, i, address, pid, tlb->EPN, >> + mask, (uint32_t)tlb->PID, tlb->prot); >> + /* Check PID */ >> + if (tlb->PID != 0 && tlb->PID != pid) { >> + return -1; >> + } >> + /* Check effective address */ >> + if ((address & mask) != tlb->EPN) { >> + return -1; >> + } >> + *raddrp = (tlb->RPN & mask) | (address & ~mask); >> + if (ext) { >> + /* Extend the physical address to 36 bits */ >> + *raddrp |= (uint64_t)(tlb->RPN & 0xF) << 32; >> + } >> + >> + return 0; >> +} >> + >> +static int mmu40x_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, >> + target_ulong address, >> + MMUAccessType access_type) >> +{ >> + ppcemb_tlb_t *tlb; >> + hwaddr raddr; >> + int i, ret, zsel, zpr, pr; >> + >> + ret = -1; >> + raddr = (hwaddr)-1ULL; >> + pr = msr_pr; >> + for (i = 0; i < env->nb_tlb; i++) { >> + tlb = &env->tlb.tlbe[i]; >> + if (ppcemb_tlb_check(env, tlb, &raddr, address, >> + env->spr[SPR_40x_PID], 0, i) < 0) { >> + continue; >> + } >> + zsel = (tlb->attr >> 4) & 0xF; >> + zpr = (env->spr[SPR_40x_ZPR] >> (30 - (2 * zsel))) & 0x3; >> + LOG_SWTLB("%s: TLB %d zsel %d zpr %d ty %d attr %08x\n", >> + __func__, i, zsel, zpr, access_type, tlb->attr); >> + /* Check execute enable bit */ >> + switch (zpr) { >> + case 0x2: >> + if (pr != 0) { >> + goto check_perms; >> + } >> + /* fall through */ >> + case 0x3: >> + /* All accesses granted */ >> + ctx->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; >> + ret = 0; >> + break; >> + case 0x0: >> + if (pr != 0) { >> + /* Raise Zone protection fault. */ >> + env->spr[SPR_40x_ESR] = 1 << 22; >> + ctx->prot = 0; >> + ret = -2; >> + break; >> + } >> + /* fall through */ >> + case 0x1: >> + check_perms: >> + /* Check from TLB entry */ >> + ctx->prot = tlb->prot; >> + ret = check_prot(ctx->prot, access_type); >> + if (ret == -2) { >> + env->spr[SPR_40x_ESR] = 0; >> + } >> + break; >> + } >> + if (ret >= 0) { >> + ctx->raddr = raddr; >> + LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx >> + " %d %d\n", __func__, address, ctx->raddr, ctx->prot, >> + ret); >> + return 0; >> + } >> + } >> + LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx >> + " %d %d\n", __func__, address, raddr, ctx->prot, ret); >> + >> + return ret; >> +} >> + >> +void store_40x_sler(CPUPPCState *env, uint32_t val) >> +{ >> + /* XXX: TO BE FIXED */ >> + if (val != 0x00000000) { >> + cpu_abort(env_cpu(env), >> + "Little-endian regions are not supported by now\n"); >> + } >> + env->spr[SPR_405_SLER] = val; >> +} >> + >> +static int mmubooke_check_tlb(CPUPPCState *env, ppcemb_tlb_t *tlb, >> + hwaddr *raddr, int *prot, target_ulong address, >> + MMUAccessType access_type, int i) >> +{ >> + int prot2; >> + >> + if (ppcemb_tlb_check(env, tlb, raddr, address, >> + env->spr[SPR_BOOKE_PID], >> + !env->nb_pids, i) >= 0) { >> + goto found_tlb; >> + } >> + >> + if (env->spr[SPR_BOOKE_PID1] && >> + ppcemb_tlb_check(env, tlb, raddr, address, >> + env->spr[SPR_BOOKE_PID1], 0, i) >= 0) { >> + goto found_tlb; >> + } >> + >> + if (env->spr[SPR_BOOKE_PID2] && >> + ppcemb_tlb_check(env, tlb, raddr, address, >> + env->spr[SPR_BOOKE_PID2], 0, i) >= 0) { >> + goto found_tlb; >> + } >> + >> + LOG_SWTLB("%s: TLB entry not found\n", __func__); >> + return -1; >> + >> +found_tlb: >> + >> + if (msr_pr != 0) { >> + prot2 = tlb->prot & 0xF; >> + } else { >> + prot2 = (tlb->prot >> 4) & 0xF; >> + } >> + >> + /* Check the address space */ >> + if ((access_type == MMU_INST_FETCH ? msr_ir : msr_dr) != (tlb->attr & 1)) { >> + LOG_SWTLB("%s: AS doesn't match\n", __func__); >> + return -1; >> + } >> + >> + *prot = prot2; >> + if (prot2 & prot_for_access_type(access_type)) { >> + LOG_SWTLB("%s: good TLB!\n", __func__); >> + return 0; >> + } >> + >> + LOG_SWTLB("%s: no prot match: %x\n", __func__, prot2); >> + return access_type == MMU_INST_FETCH ? -3 : -2; >> +} >> + >> +static int mmubooke_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, >> + target_ulong address, >> + MMUAccessType access_type) >> +{ >> + ppcemb_tlb_t *tlb; >> + hwaddr raddr; >> + int i, ret; >> + >> + ret = -1; >> + raddr = (hwaddr)-1ULL; >> + for (i = 0; i < env->nb_tlb; i++) { >> + tlb = &env->tlb.tlbe[i]; >> + ret = mmubooke_check_tlb(env, tlb, &raddr, &ctx->prot, address, >> + access_type, i); >> + if (ret != -1) { >> + break; >> + } >> + } >> + >> + if (ret >= 0) { >> + ctx->raddr = raddr; >> + LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx >> + " %d %d\n", __func__, address, ctx->raddr, ctx->prot, >> + ret); >> + } else { >> + LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx >> + " %d %d\n", __func__, address, raddr, ctx->prot, ret); >> + } >> + >> + return ret; >> +} >> + >> +hwaddr booke206_tlb_to_page_size(CPUPPCState *env, >> + ppcmas_tlb_t *tlb) >> +{ >> + int tlbm_size; >> + >> + tlbm_size = (tlb->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT; >> + >> + return 1024ULL << tlbm_size; >> +} >> + >> +/* TLB check function for MAS based SoftTLBs */ >> +int ppcmas_tlb_check(CPUPPCState *env, ppcmas_tlb_t *tlb, >> + hwaddr *raddrp, target_ulong address, >> + uint32_t pid) >> +{ >> + hwaddr mask; >> + uint32_t tlb_pid; >> + >> + if (!msr_cm) { >> + /* In 32bit mode we can only address 32bit EAs */ >> + address = (uint32_t)address; >> + } >> + >> + /* Check valid flag */ >> + if (!(tlb->mas1 & MAS1_VALID)) { >> + return -1; >> + } >> + >> + mask = ~(booke206_tlb_to_page_size(env, tlb) - 1); >> + LOG_SWTLB("%s: TLB ADDR=0x" TARGET_FMT_lx " PID=0x%x MAS1=0x%x MAS2=0x%" >> + PRIx64 " mask=0x%" HWADDR_PRIx " MAS7_3=0x%" PRIx64 " MAS8=0x%" >> + PRIx32 "\n", __func__, address, pid, tlb->mas1, tlb->mas2, mask, >> + tlb->mas7_3, tlb->mas8); >> + >> + /* Check PID */ >> + tlb_pid = (tlb->mas1 & MAS1_TID_MASK) >> MAS1_TID_SHIFT; >> + if (tlb_pid != 0 && tlb_pid != pid) { >> + return -1; >> + } >> + >> + /* Check effective address */ >> + if ((address & mask) != (tlb->mas2 & MAS2_EPN_MASK)) { >> + return -1; >> + } >> + >> + if (raddrp) { >> + *raddrp = (tlb->mas7_3 & mask) | (address & ~mask); >> + } >> + >> + return 0; >> +} >> + >> +static bool is_epid_mmu(int mmu_idx) >> +{ >> + return mmu_idx == PPC_TLB_EPID_STORE || mmu_idx == PPC_TLB_EPID_LOAD; >> +} >> + >> +static uint32_t mmubooke206_esr(int mmu_idx, MMUAccessType access_type) >> +{ >> + uint32_t esr = 0; >> + if (access_type == MMU_DATA_STORE) { >> + esr |= ESR_ST; >> + } >> + if (is_epid_mmu(mmu_idx)) { >> + esr |= ESR_EPID; >> + } >> + return esr; >> +} >> + >> +/* >> + * Get EPID register given the mmu_idx. If this is regular load, >> + * construct the EPID access bits from current processor state >> + * >> + * Get the effective AS and PR bits and the PID. The PID is returned >> + * only if EPID load is requested, otherwise the caller must detect >> + * the correct EPID. Return true if valid EPID is returned. >> + */ >> +static bool mmubooke206_get_as(CPUPPCState *env, >> + int mmu_idx, uint32_t *epid_out, >> + bool *as_out, bool *pr_out) >> +{ >> + if (is_epid_mmu(mmu_idx)) { >> + uint32_t epidr; >> + if (mmu_idx == PPC_TLB_EPID_STORE) { >> + epidr = env->spr[SPR_BOOKE_EPSC]; >> + } else { >> + epidr = env->spr[SPR_BOOKE_EPLC]; >> + } >> + *epid_out = (epidr & EPID_EPID) >> EPID_EPID_SHIFT; >> + *as_out = !!(epidr & EPID_EAS); >> + *pr_out = !!(epidr & EPID_EPR); >> + return true; >> + } else { >> + *as_out = msr_ds; >> + *pr_out = msr_pr; >> + return false; >> + } >> +} >> + >> +/* Check if the tlb found by hashing really matches */ >> +static int mmubooke206_check_tlb(CPUPPCState *env, ppcmas_tlb_t *tlb, >> + hwaddr *raddr, int *prot, >> + target_ulong address, >> + MMUAccessType access_type, int mmu_idx) >> +{ >> + int prot2 = 0; >> + uint32_t epid; >> + bool as, pr; >> + bool use_epid = mmubooke206_get_as(env, mmu_idx, &epid, &as, &pr); >> + >> + if (!use_epid) { >> + if (ppcmas_tlb_check(env, tlb, raddr, address, >> + env->spr[SPR_BOOKE_PID]) >= 0) { >> + goto found_tlb; >> + } >> + >> + if (env->spr[SPR_BOOKE_PID1] && >> + ppcmas_tlb_check(env, tlb, raddr, address, >> + env->spr[SPR_BOOKE_PID1]) >= 0) { >> + goto found_tlb; >> + } >> + >> + if (env->spr[SPR_BOOKE_PID2] && >> + ppcmas_tlb_check(env, tlb, raddr, address, >> + env->spr[SPR_BOOKE_PID2]) >= 0) { >> + goto found_tlb; >> + } >> + } else { >> + if (ppcmas_tlb_check(env, tlb, raddr, address, epid) >= 0) { >> + goto found_tlb; >> + } >> + } >> + >> + LOG_SWTLB("%s: TLB entry not found\n", __func__); >> + return -1; >> + >> +found_tlb: >> + >> + if (pr) { >> + if (tlb->mas7_3 & MAS3_UR) { >> + prot2 |= PAGE_READ; >> + } >> + if (tlb->mas7_3 & MAS3_UW) { >> + prot2 |= PAGE_WRITE; >> + } >> + if (tlb->mas7_3 & MAS3_UX) { >> + prot2 |= PAGE_EXEC; >> + } >> + } else { >> + if (tlb->mas7_3 & MAS3_SR) { >> + prot2 |= PAGE_READ; >> + } >> + if (tlb->mas7_3 & MAS3_SW) { >> + prot2 |= PAGE_WRITE; >> + } >> + if (tlb->mas7_3 & MAS3_SX) { >> + prot2 |= PAGE_EXEC; >> + } >> + } >> + >> + /* Check the address space and permissions */ >> + if (access_type == MMU_INST_FETCH) { >> + /* There is no way to fetch code using epid load */ >> + assert(!use_epid); >> + as = msr_ir; >> + } >> + >> + if (as != ((tlb->mas1 & MAS1_TS) >> MAS1_TS_SHIFT)) { >> + LOG_SWTLB("%s: AS doesn't match\n", __func__); >> + return -1; >> + } >> + >> + *prot = prot2; >> + if (prot2 & prot_for_access_type(access_type)) { >> + LOG_SWTLB("%s: good TLB!\n", __func__); >> + return 0; >> + } >> + >> + LOG_SWTLB("%s: no prot match: %x\n", __func__, prot2); >> + return access_type == MMU_INST_FETCH ? -3 : -2; >> +} >> + >> +static int mmubooke206_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, >> + target_ulong address, >> + MMUAccessType access_type, >> + int mmu_idx) >> +{ >> + ppcmas_tlb_t *tlb; >> + hwaddr raddr; >> + int i, j, ret; >> + >> + ret = -1; >> + raddr = (hwaddr)-1ULL; >> + >> + for (i = 0; i < BOOKE206_MAX_TLBN; i++) { >> + int ways = booke206_tlb_ways(env, i); >> + >> + for (j = 0; j < ways; j++) { >> + tlb = booke206_get_tlbm(env, i, address, j); >> + if (!tlb) { >> + continue; >> + } >> + ret = mmubooke206_check_tlb(env, tlb, &raddr, &ctx->prot, address, >> + access_type, mmu_idx); >> + if (ret != -1) { >> + goto found_tlb; >> + } >> + } >> + } >> + >> +found_tlb: >> + >> + if (ret >= 0) { >> + ctx->raddr = raddr; >> + LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx >> + " %d %d\n", __func__, address, ctx->raddr, ctx->prot, >> + ret); >> + } else { >> + LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx >> + " %d %d\n", __func__, address, raddr, ctx->prot, ret); >> + } >> + >> + return ret; >> +} >> + >> +static const char *book3e_tsize_to_str[32] = { >> + "1K", "2K", "4K", "8K", "16K", "32K", "64K", "128K", "256K", "512K", >> + "1M", "2M", "4M", "8M", "16M", "32M", "64M", "128M", "256M", "512M", >> + "1G", "2G", "4G", "8G", "16G", "32G", "64G", "128G", "256G", "512G", >> + "1T", "2T" >> +}; >> + >> +static void mmubooke_dump_mmu(CPUPPCState *env) >> +{ >> + ppcemb_tlb_t *entry; >> + int i; >> + >> + if (kvm_enabled() && !env->kvm_sw_tlb) { >> + qemu_printf("Cannot access KVM TLB\n"); >> + return; >> + } >> + >> + qemu_printf("\nTLB:\n"); >> + qemu_printf("Effective Physical Size PID Prot " >> + "Attr\n"); >> + >> + entry = &env->tlb.tlbe[0]; >> + for (i = 0; i < env->nb_tlb; i++, entry++) { >> + hwaddr ea, pa; >> + target_ulong mask; >> + uint64_t size = (uint64_t)entry->size; >> + char size_buf[20]; >> + >> + /* Check valid flag */ >> + if (!(entry->prot & PAGE_VALID)) { >> + continue; >> + } >> + >> + mask = ~(entry->size - 1); >> + ea = entry->EPN & mask; >> + pa = entry->RPN & mask; >> + /* Extend the physical address to 36 bits */ >> + pa |= (hwaddr)(entry->RPN & 0xF) << 32; >> + if (size >= 1 * MiB) { >> + snprintf(size_buf, sizeof(size_buf), "%3" PRId64 "M", size / MiB); >> + } else { >> + snprintf(size_buf, sizeof(size_buf), "%3" PRId64 "k", size / KiB); >> + } >> + qemu_printf("0x%016" PRIx64 " 0x%016" PRIx64 " %s %-5u %08x %08x\n", >> + (uint64_t)ea, (uint64_t)pa, size_buf, (uint32_t)entry->PID, >> + entry->prot, entry->attr); >> + } >> + >> +} >> + >> +static void mmubooke206_dump_one_tlb(CPUPPCState *env, int tlbn, int offset, >> + int tlbsize) >> +{ >> + ppcmas_tlb_t *entry; >> + int i; >> + >> + qemu_printf("\nTLB%d:\n", tlbn); >> + qemu_printf("Effective Physical Size TID TS SRWX" >> + " URWX WIMGE U0123\n"); >> + >> + entry = &env->tlb.tlbm[offset]; >> + for (i = 0; i < tlbsize; i++, entry++) { >> + hwaddr ea, pa, size; >> + int tsize; >> + >> + if (!(entry->mas1 & MAS1_VALID)) { >> + continue; >> + } >> + >> + tsize = (entry->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT; >> + size = 1024ULL << tsize; >> + ea = entry->mas2 & ~(size - 1); >> + pa = entry->mas7_3 & ~(size - 1); >> + >> + qemu_printf("0x%016" PRIx64 " 0x%016" PRIx64 " %4s %-5u %1u S%c%c%c" >> + "U%c%c%c %c%c%c%c%c U%c%c%c%c\n", >> + (uint64_t)ea, (uint64_t)pa, >> + book3e_tsize_to_str[tsize], >> + (entry->mas1 & MAS1_TID_MASK) >> MAS1_TID_SHIFT, >> + (entry->mas1 & MAS1_TS) >> MAS1_TS_SHIFT, >> + entry->mas7_3 & MAS3_SR ? 'R' : '-', >> + entry->mas7_3 & MAS3_SW ? 'W' : '-', >> + entry->mas7_3 & MAS3_SX ? 'X' : '-', >> + entry->mas7_3 & MAS3_UR ? 'R' : '-', >> + entry->mas7_3 & MAS3_UW ? 'W' : '-', >> + entry->mas7_3 & MAS3_UX ? 'X' : '-', >> + entry->mas2 & MAS2_W ? 'W' : '-', >> + entry->mas2 & MAS2_I ? 'I' : '-', >> + entry->mas2 & MAS2_M ? 'M' : '-', >> + entry->mas2 & MAS2_G ? 'G' : '-', >> + entry->mas2 & MAS2_E ? 'E' : '-', >> + entry->mas7_3 & MAS3_U0 ? '0' : '-', >> + entry->mas7_3 & MAS3_U1 ? '1' : '-', >> + entry->mas7_3 & MAS3_U2 ? '2' : '-', >> + entry->mas7_3 & MAS3_U3 ? '3' : '-'); >> + } >> +} >> + >> +static void mmubooke206_dump_mmu(CPUPPCState *env) >> +{ >> + int offset = 0; >> + int i; >> + >> + if (kvm_enabled() && !env->kvm_sw_tlb) { >> + qemu_printf("Cannot access KVM TLB\n"); >> + return; >> + } >> + >> + for (i = 0; i < BOOKE206_MAX_TLBN; i++) { >> + int size = booke206_tlb_size(env, i); >> + >> + if (size == 0) { >> + continue; >> + } >> + >> + mmubooke206_dump_one_tlb(env, i, offset, size); >> + offset += size; >> + } >> +} >> + >> +static void mmu6xx_dump_BATs(CPUPPCState *env, int type) >> +{ >> + target_ulong *BATlt, *BATut, *BATu, *BATl; >> + target_ulong BEPIl, BEPIu, bl; >> + int i; >> + >> + switch (type) { >> + case ACCESS_CODE: >> + BATlt = env->IBAT[1]; >> + BATut = env->IBAT[0]; >> + break; >> + default: >> + BATlt = env->DBAT[1]; >> + BATut = env->DBAT[0]; >> + break; >> + } >> + >> + for (i = 0; i < env->nb_BATs; i++) { >> + BATu = &BATut[i]; >> + BATl = &BATlt[i]; >> + BEPIu = *BATu & 0xF0000000; >> + BEPIl = *BATu & 0x0FFE0000; >> + bl = (*BATu & 0x00001FFC) << 15; >> + qemu_printf("%s BAT%d BATu " TARGET_FMT_lx >> + " BATl " TARGET_FMT_lx "\n\t" TARGET_FMT_lx " " >> + TARGET_FMT_lx " " TARGET_FMT_lx "\n", >> + type == ACCESS_CODE ? "code" : "data", i, >> + *BATu, *BATl, BEPIu, BEPIl, bl); >> + } >> +} >> + >> +static void mmu6xx_dump_mmu(CPUPPCState *env) >> +{ >> + PowerPCCPU *cpu = env_archcpu(env); >> + ppc6xx_tlb_t *tlb; >> + target_ulong sr; >> + int type, way, entry, i; >> + >> + qemu_printf("HTAB base = 0x%"HWADDR_PRIx"\n", ppc_hash32_hpt_base(cpu)); >> + qemu_printf("HTAB mask = 0x%"HWADDR_PRIx"\n", ppc_hash32_hpt_mask(cpu)); >> + >> + qemu_printf("\nSegment registers:\n"); >> + for (i = 0; i < 32; i++) { >> + sr = env->sr[i]; >> + if (sr & 0x80000000) { >> + qemu_printf("%02d T=%d Ks=%d Kp=%d BUID=0x%03x " >> + "CNTLR_SPEC=0x%05x\n", i, >> + sr & 0x80000000 ? 1 : 0, sr & 0x40000000 ? 1 : 0, >> + sr & 0x20000000 ? 1 : 0, (uint32_t)((sr >> 20) & 0x1FF), >> + (uint32_t)(sr & 0xFFFFF)); >> + } else { >> + qemu_printf("%02d T=%d Ks=%d Kp=%d N=%d VSID=0x%06x\n", i, >> + sr & 0x80000000 ? 1 : 0, sr & 0x40000000 ? 1 : 0, >> + sr & 0x20000000 ? 1 : 0, sr & 0x10000000 ? 1 : 0, >> + (uint32_t)(sr & 0x00FFFFFF)); >> + } >> + } >> + >> + qemu_printf("\nBATs:\n"); >> + mmu6xx_dump_BATs(env, ACCESS_INT); >> + mmu6xx_dump_BATs(env, ACCESS_CODE); >> + >> + if (env->id_tlbs != 1) { >> + qemu_printf("ERROR: 6xx MMU should have separated TLB" >> + " for code and data\n"); >> + } >> + >> + qemu_printf("\nTLBs [EPN EPN + SIZE]\n"); >> + >> + for (type = 0; type < 2; type++) { >> + for (way = 0; way < env->nb_ways; way++) { >> + for (entry = env->nb_tlb * type + env->tlb_per_way * way; >> + entry < (env->nb_tlb * type + env->tlb_per_way * (way + 1)); >> + entry++) { >> + >> + tlb = &env->tlb.tlb6[entry]; >> + qemu_printf("%s TLB %02d/%02d way:%d %s [" >> + TARGET_FMT_lx " " TARGET_FMT_lx "]\n", >> + type ? "code" : "data", entry % env->nb_tlb, >> + env->nb_tlb, way, >> + pte_is_valid(tlb->pte0) ? "valid" : "inval", >> + tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE); >> + } >> + } >> + } >> +} >> + >> +void dump_mmu(CPUPPCState *env) >> +{ >> + switch (env->mmu_model) { >> + case POWERPC_MMU_BOOKE: >> + mmubooke_dump_mmu(env); >> + break; >> + case POWERPC_MMU_BOOKE206: >> + mmubooke206_dump_mmu(env); >> + break; >> + case POWERPC_MMU_SOFT_6xx: >> + case POWERPC_MMU_SOFT_74xx: >> + mmu6xx_dump_mmu(env); >> + break; >> +#if defined(TARGET_PPC64) >> + case POWERPC_MMU_64B: >> + case POWERPC_MMU_2_03: >> + case POWERPC_MMU_2_06: >> + case POWERPC_MMU_2_07: >> + dump_slb(env_archcpu(env)); >> + break; >> + case POWERPC_MMU_3_00: >> + if (ppc64_v3_radix(env_archcpu(env))) { >> + qemu_log_mask(LOG_UNIMP, "%s: the PPC64 MMU is unsupported\n", >> + __func__); >> + } else { >> + dump_slb(env_archcpu(env)); >> + } >> + break; >> +#endif >> + default: >> + qemu_log_mask(LOG_UNIMP, "%s: unimplemented\n", __func__); >> + } >> +} >> + >> +static int check_physical(CPUPPCState *env, mmu_ctx_t *ctx, target_ulong eaddr, >> + MMUAccessType access_type) >> +{ >> + int in_plb, ret; >> + >> + ctx->raddr = eaddr; >> + ctx->prot = PAGE_READ | PAGE_EXEC; >> + ret = 0; >> + switch (env->mmu_model) { >> + case POWERPC_MMU_SOFT_6xx: >> + case POWERPC_MMU_SOFT_74xx: >> + case POWERPC_MMU_SOFT_4xx: >> + case POWERPC_MMU_REAL: >> + case POWERPC_MMU_BOOKE: >> + ctx->prot |= PAGE_WRITE; >> + break; >> + >> + case POWERPC_MMU_SOFT_4xx_Z: >> + if (unlikely(msr_pe != 0)) { >> + /* >> + * 403 family add some particular protections, using >> + * PBL/PBU registers for accesses with no translation. >> + */ >> + in_plb = >> + /* Check PLB validity */ >> + (env->pb[0] < env->pb[1] && >> + /* and address in plb area */ >> + eaddr >= env->pb[0] && eaddr < env->pb[1]) || >> + (env->pb[2] < env->pb[3] && >> + eaddr >= env->pb[2] && eaddr < env->pb[3]) ? 1 : 0; >> + if (in_plb ^ msr_px) { >> + /* Access in protected area */ >> + if (access_type == MMU_DATA_STORE) { >> + /* Access is not allowed */ >> + ret = -2; >> + } >> + } else { >> + /* Read-write access is allowed */ >> + ctx->prot |= PAGE_WRITE; >> + } >> + } >> + break; >> + >> + default: >> + /* Caller's checks mean we should never get here for other models */ >> + abort(); >> + return -1; >> + } >> + >> + return ret; >> +} >> + >> +int get_physical_address_wtlb(CPUPPCState *env, mmu_ctx_t *ctx, >> + target_ulong eaddr, >> + MMUAccessType access_type, int type, >> + int mmu_idx) >> +{ >> + int ret = -1; >> + bool real_mode = (type == ACCESS_CODE && msr_ir == 0) >> + || (type != ACCESS_CODE && msr_dr == 0); >> + >> + switch (env->mmu_model) { >> + case POWERPC_MMU_SOFT_6xx: >> + case POWERPC_MMU_SOFT_74xx: >> + if (real_mode) { >> + ret = check_physical(env, ctx, eaddr, access_type); >> + } else { >> + /* Try to find a BAT */ >> + if (env->nb_BATs != 0) { >> + ret = get_bat_6xx_tlb(env, ctx, eaddr, access_type); >> + } >> + if (ret < 0) { >> + /* We didn't match any BAT entry or don't have BATs */ >> + ret = get_segment_6xx_tlb(env, ctx, eaddr, access_type, type); >> + } >> + } >> + break; >> + >> + case POWERPC_MMU_SOFT_4xx: >> + case POWERPC_MMU_SOFT_4xx_Z: >> + if (real_mode) { >> + ret = check_physical(env, ctx, eaddr, access_type); >> + } else { >> + ret = mmu40x_get_physical_address(env, ctx, eaddr, access_type); >> + } >> + break; >> + case POWERPC_MMU_BOOKE: >> + ret = mmubooke_get_physical_address(env, ctx, eaddr, access_type); >> + break; >> + case POWERPC_MMU_BOOKE206: >> + ret = mmubooke206_get_physical_address(env, ctx, eaddr, access_type, >> + mmu_idx); >> + break; >> + case POWERPC_MMU_MPC8xx: >> + /* XXX: TODO */ >> + cpu_abort(env_cpu(env), "MPC8xx MMU model is not implemented\n"); >> + break; >> + case POWERPC_MMU_REAL: >> + if (real_mode) { >> + ret = check_physical(env, ctx, eaddr, access_type); >> + } else { >> + cpu_abort(env_cpu(env), >> + "PowerPC in real mode do not do any translation\n"); >> + } >> + return -1; >> + default: >> + cpu_abort(env_cpu(env), "Unknown or invalid MMU model\n"); >> + return -1; >> + } >> + >> + return ret; >> +} >> + >> +int get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, >> + target_ulong eaddr, MMUAccessType access_type, >> + int type) >> +{ >> + return get_physical_address_wtlb(env, ctx, eaddr, access_type, type, 0); >> +} >> + >> +hwaddr ppc_cpu_get_phys_page_debug(CPUState *cs, vaddr addr) >> +{ >> + PowerPCCPU *cpu = POWERPC_CPU(cs); >> + CPUPPCState *env = &cpu->env; >> + mmu_ctx_t ctx; >> + >> + switch (env->mmu_model) { >> +#if defined(TARGET_PPC64) >> + case POWERPC_MMU_64B: >> + case POWERPC_MMU_2_03: >> + case POWERPC_MMU_2_06: >> + case POWERPC_MMU_2_07: >> + return ppc_hash64_get_phys_page_debug(cpu, addr); >> + case POWERPC_MMU_3_00: >> + return ppc64_v3_get_phys_page_debug(cpu, addr); >> +#endif >> + >> + case POWERPC_MMU_32B: >> + case POWERPC_MMU_601: >> + return ppc_hash32_get_phys_page_debug(cpu, addr); >> + >> + default: >> + ; >> + } >> + >> + if (unlikely(get_physical_address(env, &ctx, addr, MMU_DATA_LOAD, >> + ACCESS_INT) != 0)) { >> + >> + /* >> + * Some MMUs have separate TLBs for code and data. If we only >> + * try an ACCESS_INT, we may not be able to read instructions >> + * mapped by code TLBs, so we also try a ACCESS_CODE. >> + */ >> + if (unlikely(get_physical_address(env, &ctx, addr, MMU_INST_FETCH, >> + ACCESS_CODE) != 0)) { >> + return -1; >> + } >> + } >> + >> + return ctx.raddr & TARGET_PAGE_MASK; >> +} >> + >> +static void booke206_update_mas_tlb_miss(CPUPPCState *env, target_ulong address, >> + MMUAccessType access_type, int mmu_idx) >> +{ >> + uint32_t epid; >> + bool as, pr; >> + uint32_t missed_tid = 0; >> + bool use_epid = mmubooke206_get_as(env, mmu_idx, &epid, &as, &pr); >> + >> + if (access_type == MMU_INST_FETCH) { >> + as = msr_ir; >> + } >> + env->spr[SPR_BOOKE_MAS0] = env->spr[SPR_BOOKE_MAS4] & MAS4_TLBSELD_MASK; >> + env->spr[SPR_BOOKE_MAS1] = env->spr[SPR_BOOKE_MAS4] & MAS4_TSIZED_MASK; >> + env->spr[SPR_BOOKE_MAS2] = env->spr[SPR_BOOKE_MAS4] & MAS4_WIMGED_MASK; >> + env->spr[SPR_BOOKE_MAS3] = 0; >> + env->spr[SPR_BOOKE_MAS6] = 0; >> + env->spr[SPR_BOOKE_MAS7] = 0; >> + >> + /* AS */ >> + if (as) { >> + env->spr[SPR_BOOKE_MAS1] |= MAS1_TS; >> + env->spr[SPR_BOOKE_MAS6] |= MAS6_SAS; >> + } >> + >> + env->spr[SPR_BOOKE_MAS1] |= MAS1_VALID; >> + env->spr[SPR_BOOKE_MAS2] |= address & MAS2_EPN_MASK; >> + >> + if (!use_epid) { >> + switch (env->spr[SPR_BOOKE_MAS4] & MAS4_TIDSELD_PIDZ) { >> + case MAS4_TIDSELD_PID0: >> + missed_tid = env->spr[SPR_BOOKE_PID]; >> + break; >> + case MAS4_TIDSELD_PID1: >> + missed_tid = env->spr[SPR_BOOKE_PID1]; >> + break; >> + case MAS4_TIDSELD_PID2: >> + missed_tid = env->spr[SPR_BOOKE_PID2]; >> + break; >> + } >> + env->spr[SPR_BOOKE_MAS6] |= env->spr[SPR_BOOKE_PID] << 16; >> + } else { >> + missed_tid = epid; >> + env->spr[SPR_BOOKE_MAS6] |= missed_tid << 16; >> + } >> + env->spr[SPR_BOOKE_MAS1] |= (missed_tid << MAS1_TID_SHIFT); >> + >> + >> + /* next victim logic */ >> + env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_ESEL_SHIFT; >> + env->last_way++; >> + env->last_way &= booke206_tlb_ways(env, 0) - 1; >> + env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_NV_SHIFT; >> +} >> + >> +/* Perform address translation */ >> +static int cpu_ppc_handle_mmu_fault(CPUPPCState *env, target_ulong address, >> + MMUAccessType access_type, int mmu_idx) >> +{ >> + CPUState *cs = env_cpu(env); >> + PowerPCCPU *cpu = POWERPC_CPU(cs); >> + mmu_ctx_t ctx; >> + int type; >> + int ret = 0; >> + >> + if (access_type == MMU_INST_FETCH) { >> + /* code access */ >> + type = ACCESS_CODE; >> + } else { >> + /* data access */ >> + type = env->access_type; >> + } >> + ret = get_physical_address_wtlb(env, &ctx, address, access_type, >> + type, mmu_idx); >> + if (ret == 0) { >> + tlb_set_page(cs, address & TARGET_PAGE_MASK, >> + ctx.raddr & TARGET_PAGE_MASK, ctx.prot, >> + mmu_idx, TARGET_PAGE_SIZE); >> + ret = 0; >> + } else if (ret < 0) { >> + LOG_MMU_STATE(cs); >> + if (type == ACCESS_CODE) { >> + switch (ret) { >> + case -1: >> + /* No matches in page tables or TLB */ >> + switch (env->mmu_model) { >> + case POWERPC_MMU_SOFT_6xx: >> + cs->exception_index = POWERPC_EXCP_IFTLB; >> + env->error_code = 1 << 18; >> + env->spr[SPR_IMISS] = address; >> + env->spr[SPR_ICMP] = 0x80000000 | ctx.ptem; >> + goto tlb_miss; >> + case POWERPC_MMU_SOFT_74xx: >> + cs->exception_index = POWERPC_EXCP_IFTLB; >> + goto tlb_miss_74xx; >> + case POWERPC_MMU_SOFT_4xx: >> + case POWERPC_MMU_SOFT_4xx_Z: >> + cs->exception_index = POWERPC_EXCP_ITLB; >> + env->error_code = 0; >> + env->spr[SPR_40x_DEAR] = address; >> + env->spr[SPR_40x_ESR] = 0x00000000; >> + break; >> + case POWERPC_MMU_BOOKE206: >> + booke206_update_mas_tlb_miss(env, address, 2, mmu_idx); >> + /* fall through */ >> + case POWERPC_MMU_BOOKE: >> + cs->exception_index = POWERPC_EXCP_ITLB; >> + env->error_code = 0; >> + env->spr[SPR_BOOKE_DEAR] = address; >> + env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx, MMU_DATA_LOAD); >> + return -1; >> + case POWERPC_MMU_MPC8xx: >> + /* XXX: TODO */ >> + cpu_abort(cs, "MPC8xx MMU model is not implemented\n"); >> + break; >> + case POWERPC_MMU_REAL: >> + cpu_abort(cs, "PowerPC in real mode should never raise " >> + "any MMU exceptions\n"); >> + return -1; >> + default: >> + cpu_abort(cs, "Unknown or invalid MMU model\n"); >> + return -1; >> + } >> + break; >> + case -2: >> + /* Access rights violation */ >> + cs->exception_index = POWERPC_EXCP_ISI; >> + env->error_code = 0x08000000; >> + break; >> + case -3: >> + /* No execute protection violation */ >> + if ((env->mmu_model == POWERPC_MMU_BOOKE) || >> + (env->mmu_model == POWERPC_MMU_BOOKE206)) { >> + env->spr[SPR_BOOKE_ESR] = 0x00000000; >> + } >> + cs->exception_index = POWERPC_EXCP_ISI; >> + env->error_code = 0x10000000; >> + break; >> + case -4: >> + /* Direct store exception */ >> + /* No code fetch is allowed in direct-store areas */ >> + cs->exception_index = POWERPC_EXCP_ISI; >> + env->error_code = 0x10000000; >> + break; >> + } >> + } else { >> + switch (ret) { >> + case -1: >> + /* No matches in page tables or TLB */ >> + switch (env->mmu_model) { >> + case POWERPC_MMU_SOFT_6xx: >> + if (access_type == MMU_DATA_STORE) { >> + cs->exception_index = POWERPC_EXCP_DSTLB; >> + env->error_code = 1 << 16; >> + } else { >> + cs->exception_index = POWERPC_EXCP_DLTLB; >> + env->error_code = 0; >> + } >> + env->spr[SPR_DMISS] = address; >> + env->spr[SPR_DCMP] = 0x80000000 | ctx.ptem; >> + tlb_miss: >> + env->error_code |= ctx.key << 19; >> + env->spr[SPR_HASH1] = ppc_hash32_hpt_base(cpu) + >> + get_pteg_offset32(cpu, ctx.hash[0]); >> + env->spr[SPR_HASH2] = ppc_hash32_hpt_base(cpu) + >> + get_pteg_offset32(cpu, ctx.hash[1]); >> + break; >> + case POWERPC_MMU_SOFT_74xx: >> + if (access_type == MMU_DATA_STORE) { >> + cs->exception_index = POWERPC_EXCP_DSTLB; >> + } else { >> + cs->exception_index = POWERPC_EXCP_DLTLB; >> + } >> + tlb_miss_74xx: >> + /* Implement LRU algorithm */ >> + env->error_code = ctx.key << 19; >> + env->spr[SPR_TLBMISS] = (address & ~((target_ulong)0x3)) | >> + ((env->last_way + 1) & (env->nb_ways - 1)); >> + env->spr[SPR_PTEHI] = 0x80000000 | ctx.ptem; >> + break; >> + case POWERPC_MMU_SOFT_4xx: >> + case POWERPC_MMU_SOFT_4xx_Z: >> + cs->exception_index = POWERPC_EXCP_DTLB; >> + env->error_code = 0; >> + env->spr[SPR_40x_DEAR] = address; >> + if (access_type == MMU_DATA_STORE) { >> + env->spr[SPR_40x_ESR] = 0x00800000; >> + } else { >> + env->spr[SPR_40x_ESR] = 0x00000000; >> + } >> + break; >> + case POWERPC_MMU_MPC8xx: >> + /* XXX: TODO */ >> + cpu_abort(cs, "MPC8xx MMU model is not implemented\n"); >> + break; >> + case POWERPC_MMU_BOOKE206: >> + booke206_update_mas_tlb_miss(env, address, access_type, mmu_idx); >> + /* fall through */ >> + case POWERPC_MMU_BOOKE: >> + cs->exception_index = POWERPC_EXCP_DTLB; >> + env->error_code = 0; >> + env->spr[SPR_BOOKE_DEAR] = address; >> + env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx, access_type); >> + return -1; >> + case POWERPC_MMU_REAL: >> + cpu_abort(cs, "PowerPC in real mode should never raise " >> + "any MMU exceptions\n"); >> + return -1; >> + default: >> + cpu_abort(cs, "Unknown or invalid MMU model\n"); >> + return -1; >> + } >> + break; >> + case -2: >> + /* Access rights violation */ >> + cs->exception_index = POWERPC_EXCP_DSI; >> + env->error_code = 0; >> + if (env->mmu_model == POWERPC_MMU_SOFT_4xx >> + || env->mmu_model == POWERPC_MMU_SOFT_4xx_Z) { >> + env->spr[SPR_40x_DEAR] = address; >> + if (access_type == MMU_DATA_STORE) { >> + env->spr[SPR_40x_ESR] |= 0x00800000; >> + } >> + } else if ((env->mmu_model == POWERPC_MMU_BOOKE) || >> + (env->mmu_model == POWERPC_MMU_BOOKE206)) { >> + env->spr[SPR_BOOKE_DEAR] = address; >> + env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx, access_type); >> + } else { >> + env->spr[SPR_DAR] = address; >> + if (access_type == MMU_DATA_STORE) { >> + env->spr[SPR_DSISR] = 0x0A000000; >> + } else { >> + env->spr[SPR_DSISR] = 0x08000000; >> + } >> + } >> + break; >> + case -4: >> + /* Direct store exception */ >> + switch (type) { >> + case ACCESS_FLOAT: >> + /* Floating point load/store */ >> + cs->exception_index = POWERPC_EXCP_ALIGN; >> + env->error_code = POWERPC_EXCP_ALIGN_FP; >> + env->spr[SPR_DAR] = address; >> + break; >> + case ACCESS_RES: >> + /* lwarx, ldarx or stwcx. */ >> + cs->exception_index = POWERPC_EXCP_DSI; >> + env->error_code = 0; >> + env->spr[SPR_DAR] = address; >> + if (access_type == MMU_DATA_STORE) { >> + env->spr[SPR_DSISR] = 0x06000000; >> + } else { >> + env->spr[SPR_DSISR] = 0x04000000; >> + } >> + break; >> + case ACCESS_EXT: >> + /* eciwx or ecowx */ >> + cs->exception_index = POWERPC_EXCP_DSI; >> + env->error_code = 0; >> + env->spr[SPR_DAR] = address; >> + if (access_type == MMU_DATA_STORE) { >> + env->spr[SPR_DSISR] = 0x06100000; >> + } else { >> + env->spr[SPR_DSISR] = 0x04100000; >> + } >> + break; >> + default: >> + printf("DSI: invalid exception (%d)\n", ret); >> + cs->exception_index = POWERPC_EXCP_PROGRAM; >> + env->error_code = >> + POWERPC_EXCP_INVAL | POWERPC_EXCP_INVAL_INVAL; >> + env->spr[SPR_DAR] = address; >> + break; >> + } >> + break; >> + } >> + } >> + ret = 1; >> + } >> + >> + return ret; >> +} >> + >> +bool ppc_cpu_tlb_fill(CPUState *cs, vaddr addr, int size, >> + MMUAccessType access_type, int mmu_idx, >> + bool probe, uintptr_t retaddr) >> +{ >> + PowerPCCPU *cpu = POWERPC_CPU(cs); >> + PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cs); >> + CPUPPCState *env = &cpu->env; >> + int ret; >> + >> + if (pcc->handle_mmu_fault) { >> + ret = pcc->handle_mmu_fault(cpu, addr, access_type, mmu_idx); >> + } else { >> + ret = cpu_ppc_handle_mmu_fault(env, addr, access_type, mmu_idx); >> + } >> + if (unlikely(ret != 0)) { >> + if (probe) { >> + return false; >> + } >> + raise_exception_err_ra(env, cs->exception_index, env->error_code, >> + retaddr); >> + } >> + return true; >> +} >> diff --git a/target/ppc/mmu_helper.c b/target/ppc/mmu_helper.c >> index 803b66f2b0..dbf7b398cd 100644 >> --- a/target/ppc/mmu_helper.c >> +++ b/target/ppc/mmu_helper.c >> @@ -33,1736 +33,156 @@ >> #include "internal.h" >> #include "mmu-book3s-v3.h" >> #include "mmu-radix64.h" >> +#include "exec/helper-proto.h" >> +#include "exec/cpu_ldst.h" >> >> -#ifdef CONFIG_TCG >> -#include "exec/helper-proto.h" >> -#include "exec/cpu_ldst.h" >> -#endif >> -/* #define DEBUG_MMU */ >> -/* #define DEBUG_BATS */ >> -/* #define DEBUG_SOFTWARE_TLB */ >> -/* #define DUMP_PAGE_TABLES */ >> -/* #define FLUSH_ALL_TLBS */ >> - >> -#ifdef DEBUG_MMU >> -# define LOG_MMU_STATE(cpu) log_cpu_state_mask(CPU_LOG_MMU, (cpu), 0) >> -#else >> -# define LOG_MMU_STATE(cpu) do { } while (0) >> -#endif >> - >> -#ifdef DEBUG_SOFTWARE_TLB >> -# define LOG_SWTLB(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__) >> -#else >> -# define LOG_SWTLB(...) do { } while (0) >> -#endif >> - >> -#ifdef DEBUG_BATS >> -# define LOG_BATS(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__) >> -#else >> -# define LOG_BATS(...) do { } while (0) >> -#endif >> - >> -/*****************************************************************************/ >> -/* PowerPC MMU emulation */ >> - >> -/* Context used internally during MMU translations */ >> -typedef struct mmu_ctx_t mmu_ctx_t; >> -struct mmu_ctx_t { >> - hwaddr raddr; /* Real address */ >> - hwaddr eaddr; /* Effective address */ >> - int prot; /* Protection bits */ >> - hwaddr hash[2]; /* Pagetable hash values */ >> - target_ulong ptem; /* Virtual segment ID | API */ >> - int key; /* Access key */ >> - int nx; /* Non-execute area */ >> -}; >> - >> -/* Common routines used by software and hardware TLBs emulation */ >> -static inline int pte_is_valid(target_ulong pte0) >> -{ >> - return pte0 & 0x80000000 ? 1 : 0; >> -} >> - >> -static inline void pte_invalidate(target_ulong *pte0) >> -{ >> - *pte0 &= ~0x80000000; >> -} >> - >> -#define PTE_PTEM_MASK 0x7FFFFFBF >> -#define PTE_CHECK_MASK (TARGET_PAGE_MASK | 0x7B) >> - >> -static int pp_check(int key, int pp, int nx) >> -{ >> - int access; >> - >> - /* Compute access rights */ >> - access = 0; >> - if (key == 0) { >> - switch (pp) { >> - case 0x0: >> - case 0x1: >> - case 0x2: >> - access |= PAGE_WRITE; >> - /* fall through */ >> - case 0x3: >> - access |= PAGE_READ; >> - break; >> - } >> - } else { >> - switch (pp) { >> - case 0x0: >> - access = 0; >> - break; >> - case 0x1: >> - case 0x3: >> - access = PAGE_READ; >> - break; >> - case 0x2: >> - access = PAGE_READ | PAGE_WRITE; >> - break; >> - } >> - } >> - if (nx == 0) { >> - access |= PAGE_EXEC; >> - } >> - >> - return access; >> -} >> - >> -static int check_prot(int prot, MMUAccessType access_type) >> -{ >> - return prot & prot_for_access_type(access_type) ? 0 : -2; >> -} >> - >> -static int ppc6xx_tlb_pte_check(mmu_ctx_t *ctx, target_ulong pte0, >> - target_ulong pte1, int h, >> - MMUAccessType access_type) >> -{ >> - target_ulong ptem, mmask; >> - int access, ret, pteh, ptev, pp; >> - >> - ret = -1; >> - /* Check validity and table match */ >> - ptev = pte_is_valid(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_mask(CPU_LOG_MMU, "Bad RPN/WIMG/PP\n"); >> - return -3; >> - } >> - } >> - /* Compute access rights */ >> - access = pp_check(ctx->key, pp, ctx->nx); >> - /* Keep the matching PTE information */ >> - ctx->raddr = pte1; >> - ctx->prot = access; >> - ret = check_prot(ctx->prot, access_type); >> - if (ret == 0) { >> - /* Access granted */ >> - qemu_log_mask(CPU_LOG_MMU, "PTE access granted !\n"); >> - } else { >> - /* Access right violation */ >> - qemu_log_mask(CPU_LOG_MMU, "PTE access rejected\n"); >> - } >> - } >> - } >> - >> - return ret; >> -} >> - >> -static int pte_update_flags(mmu_ctx_t *ctx, target_ulong *pte1p, >> - int ret, MMUAccessType access_type) >> -{ >> - int store = 0; >> - >> - /* Update page flags */ >> - if (!(*pte1p & 0x00000100)) { >> - /* Update accessed flag */ >> - *pte1p |= 0x00000100; >> - store = 1; >> - } >> - if (!(*pte1p & 0x00000080)) { >> - if (access_type == MMU_DATA_STORE && ret == 0) { >> - /* Update changed flag */ >> - *pte1p |= 0x00000080; >> - store = 1; >> - } else { >> - /* Force page fault for first write access */ >> - ctx->prot &= ~PAGE_WRITE; >> - } >> - } >> - >> - return store; >> -} >> - >> -/* Software driven TLB helpers */ >> -static inline int ppc6xx_tlb_getnum(CPUPPCState *env, target_ulong eaddr, >> - int way, int is_code) >> -{ >> - int nr; >> - >> - /* Select TLB num in a way from address */ >> - nr = (eaddr >> TARGET_PAGE_BITS) & (env->tlb_per_way - 1); >> - /* Select TLB way */ >> - nr += env->tlb_per_way * way; >> - /* 6xx have separate TLBs for instructions and data */ >> - if (is_code && env->id_tlbs == 1) { >> - nr += env->nb_tlb; >> - } >> - >> - return nr; >> -} >> - >> -static inline void ppc6xx_tlb_invalidate_all(CPUPPCState *env) >> -{ >> - ppc6xx_tlb_t *tlb; >> - int nr, max; >> - >> - /* LOG_SWTLB("Invalidate all TLBs\n"); */ >> - /* Invalidate all defined software TLB */ >> - max = env->nb_tlb; >> - if (env->id_tlbs == 1) { >> - max *= 2; >> - } >> - for (nr = 0; nr < max; nr++) { >> - tlb = &env->tlb.tlb6[nr]; >> - pte_invalidate(&tlb->pte0); >> - } >> - tlb_flush(env_cpu(env)); >> -} >> - >> -static inline void ppc6xx_tlb_invalidate_virt2(CPUPPCState *env, >> - target_ulong eaddr, >> - int is_code, int match_epn) >> -{ >> -#if !defined(FLUSH_ALL_TLBS) >> - CPUState *cs = env_cpu(env); >> - ppc6xx_tlb_t *tlb; >> - int way, nr; >> - >> - /* Invalidate ITLB + DTLB, all ways */ >> - for (way = 0; way < env->nb_ways; way++) { >> - nr = ppc6xx_tlb_getnum(env, eaddr, way, is_code); >> - tlb = &env->tlb.tlb6[nr]; >> - if (pte_is_valid(tlb->pte0) && (match_epn == 0 || eaddr == tlb->EPN)) { >> - LOG_SWTLB("TLB invalidate %d/%d " TARGET_FMT_lx "\n", nr, >> - env->nb_tlb, eaddr); >> - pte_invalidate(&tlb->pte0); >> - tlb_flush_page(cs, tlb->EPN); >> - } >> - } >> -#else >> - /* XXX: PowerPC specification say this is valid as well */ >> - ppc6xx_tlb_invalidate_all(env); >> -#endif >> -} >> - >> -static inline void ppc6xx_tlb_invalidate_virt(CPUPPCState *env, >> - target_ulong eaddr, int is_code) >> -{ >> - ppc6xx_tlb_invalidate_virt2(env, eaddr, is_code, 0); >> -} >> - >> -#ifdef CONFIG_TCG >> -static void ppc6xx_tlb_store(CPUPPCState *env, target_ulong EPN, int way, >> - int is_code, target_ulong pte0, target_ulong pte1) >> -{ >> - ppc6xx_tlb_t *tlb; >> - int nr; >> - >> - nr = ppc6xx_tlb_getnum(env, EPN, way, is_code); >> - tlb = &env->tlb.tlb6[nr]; >> - LOG_SWTLB("Set TLB %d/%d EPN " TARGET_FMT_lx " PTE0 " TARGET_FMT_lx >> - " PTE1 " TARGET_FMT_lx "\n", nr, env->nb_tlb, EPN, pte0, pte1); >> - /* Invalidate any pending reference in QEMU for this virtual address */ >> - ppc6xx_tlb_invalidate_virt2(env, EPN, is_code, 1); >> - tlb->pte0 = pte0; >> - tlb->pte1 = pte1; >> - tlb->EPN = EPN; >> - /* Store last way for LRU mechanism */ >> - env->last_way = way; >> -} >> -#endif >> - >> -static int ppc6xx_tlb_check(CPUPPCState *env, mmu_ctx_t *ctx, >> - target_ulong eaddr, MMUAccessType access_type) >> -{ >> - ppc6xx_tlb_t *tlb; >> - int nr, best, way; >> - int ret; >> - >> - best = -1; >> - ret = -1; /* No TLB found */ >> - for (way = 0; way < env->nb_ways; way++) { >> - nr = ppc6xx_tlb_getnum(env, eaddr, way, access_type == MMU_INST_FETCH); >> - tlb = &env->tlb.tlb6[nr]; >> - /* This test "emulates" the PTE index match for hardware TLBs */ >> - if ((eaddr & TARGET_PAGE_MASK) != tlb->EPN) { >> - LOG_SWTLB("TLB %d/%d %s [" TARGET_FMT_lx " " TARGET_FMT_lx >> - "] <> " TARGET_FMT_lx "\n", nr, env->nb_tlb, >> - pte_is_valid(tlb->pte0) ? "valid" : "inval", >> - tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE, eaddr); >> - continue; >> - } >> - LOG_SWTLB("TLB %d/%d %s " TARGET_FMT_lx " <> " TARGET_FMT_lx " " >> - TARGET_FMT_lx " %c %c\n", nr, env->nb_tlb, >> - pte_is_valid(tlb->pte0) ? "valid" : "inval", >> - tlb->EPN, eaddr, tlb->pte1, >> - access_type == MMU_DATA_STORE ? 'S' : 'L', >> - access_type == MMU_INST_FETCH ? 'I' : 'D'); >> - switch (ppc6xx_tlb_pte_check(ctx, tlb->pte0, tlb->pte1, >> - 0, access_type)) { >> - case -3: >> - /* TLB inconsistency */ >> - return -1; >> - case -2: >> - /* Access violation */ >> - ret = -2; >> - best = nr; >> - break; >> - case -1: >> - default: >> - /* No match */ >> - break; >> - case 0: >> - /* access granted */ >> - /* >> - * XXX: we should go on looping to check all TLBs >> - * consistency but we can speed-up the whole thing as >> - * the result would be undefined if TLBs are not >> - * consistent. >> - */ >> - ret = 0; >> - best = nr; >> - goto done; >> - } >> - } >> - if (best != -1) { >> - done: >> - LOG_SWTLB("found TLB at addr " TARGET_FMT_plx " prot=%01x ret=%d\n", >> - ctx->raddr & TARGET_PAGE_MASK, ctx->prot, ret); >> - /* Update page flags */ >> - pte_update_flags(ctx, &env->tlb.tlb6[best].pte1, ret, access_type); >> - } >> - >> - return ret; >> -} >> - >> -/* Perform BAT hit & translation */ >> -static inline void bat_size_prot(CPUPPCState *env, target_ulong *blp, >> - int *validp, int *protp, target_ulong *BATu, >> - target_ulong *BATl) >> -{ >> - target_ulong bl; >> - int pp, valid, prot; >> - >> - bl = (*BATu & 0x00001FFC) << 15; >> - valid = 0; >> - prot = 0; >> - if (((msr_pr == 0) && (*BATu & 0x00000002)) || >> - ((msr_pr != 0) && (*BATu & 0x00000001))) { >> - valid = 1; >> - pp = *BATl & 0x00000003; >> - if (pp != 0) { >> - prot = PAGE_READ | PAGE_EXEC; >> - if (pp == 0x2) { >> - prot |= PAGE_WRITE; >> - } >> - } >> - } >> - *blp = bl; >> - *validp = valid; >> - *protp = prot; >> -} >> - >> -static int get_bat_6xx_tlb(CPUPPCState *env, mmu_ctx_t *ctx, >> - target_ulong virtual, MMUAccessType access_type) >> -{ >> - target_ulong *BATlt, *BATut, *BATu, *BATl; >> - target_ulong BEPIl, BEPIu, bl; >> - int i, valid, prot; >> - int ret = -1; >> - bool ifetch = access_type == MMU_INST_FETCH; >> - >> - LOG_BATS("%s: %cBAT v " TARGET_FMT_lx "\n", __func__, >> - ifetch ? 'I' : 'D', virtual); >> - if (ifetch) { >> - BATlt = env->IBAT[1]; >> - BATut = env->IBAT[0]; >> - } else { >> - BATlt = env->DBAT[1]; >> - BATut = env->DBAT[0]; >> - } >> - for (i = 0; i < env->nb_BATs; i++) { >> - BATu = &BATut[i]; >> - BATl = &BATlt[i]; >> - BEPIu = *BATu & 0xF0000000; >> - BEPIl = *BATu & 0x0FFE0000; >> - bat_size_prot(env, &bl, &valid, &prot, BATu, BATl); >> - LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx >> - " BATl " TARGET_FMT_lx "\n", __func__, >> - ifetch ? 'I' : 'D', i, virtual, *BATu, *BATl); >> - if ((virtual & 0xF0000000) == BEPIu && >> - ((virtual & 0x0FFE0000) & ~bl) == BEPIl) { >> - /* BAT matches */ >> - if (valid != 0) { >> - /* Get physical address */ >> - ctx->raddr = (*BATl & 0xF0000000) | >> - ((virtual & 0x0FFE0000 & bl) | (*BATl & 0x0FFE0000)) | >> - (virtual & 0x0001F000); >> - /* Compute access rights */ >> - ctx->prot = prot; >> - ret = check_prot(ctx->prot, access_type); >> - if (ret == 0) { >> - LOG_BATS("BAT %d match: r " TARGET_FMT_plx " prot=%c%c\n", >> - i, ctx->raddr, ctx->prot & PAGE_READ ? 'R' : '-', >> - ctx->prot & PAGE_WRITE ? 'W' : '-'); >> - } >> - break; >> - } >> - } >> - } >> - if (ret < 0) { >> -#if defined(DEBUG_BATS) >> - if (qemu_log_enabled()) { >> - LOG_BATS("no BAT match for " TARGET_FMT_lx ":\n", virtual); >> - for (i = 0; i < 4; i++) { >> - BATu = &BATut[i]; >> - BATl = &BATlt[i]; >> - BEPIu = *BATu & 0xF0000000; >> - BEPIl = *BATu & 0x0FFE0000; >> - bl = (*BATu & 0x00001FFC) << 15; >> - LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx >> - " BATl " TARGET_FMT_lx "\n\t" TARGET_FMT_lx " " >> - TARGET_FMT_lx " " TARGET_FMT_lx "\n", >> - __func__, ifetch ? 'I' : 'D', i, virtual, >> - *BATu, *BATl, BEPIu, BEPIl, bl); >> - } >> - } >> -#endif >> - } >> - /* No hit */ >> - return ret; >> -} >> - >> -/* Perform segment based translation */ >> -static int get_segment_6xx_tlb(CPUPPCState *env, mmu_ctx_t *ctx, >> - target_ulong eaddr, MMUAccessType access_type, >> - int type) >> -{ >> - PowerPCCPU *cpu = env_archcpu(env); >> - hwaddr hash; >> - target_ulong vsid; >> - int ds, pr, target_page_bits; >> - int ret; >> - target_ulong sr, pgidx; >> - >> - pr = msr_pr; >> - ctx->eaddr = eaddr; >> - >> - sr = env->sr[eaddr >> 28]; >> - ctx->key = (((sr & 0x20000000) && (pr != 0)) || >> - ((sr & 0x40000000) && (pr == 0))) ? 1 : 0; >> - ds = sr & 0x80000000 ? 1 : 0; >> - ctx->nx = sr & 0x10000000 ? 1 : 0; >> - vsid = sr & 0x00FFFFFF; >> - target_page_bits = TARGET_PAGE_BITS; >> - qemu_log_mask(CPU_LOG_MMU, >> - "Check segment v=" TARGET_FMT_lx " %d " TARGET_FMT_lx >> - " nip=" TARGET_FMT_lx " lr=" TARGET_FMT_lx >> - " ir=%d dr=%d pr=%d %d t=%d\n", >> - eaddr, (int)(eaddr >> 28), sr, env->nip, env->lr, (int)msr_ir, >> - (int)msr_dr, pr != 0 ? 1 : 0, access_type == MMU_DATA_STORE, type); >> - pgidx = (eaddr & ~SEGMENT_MASK_256M) >> target_page_bits; >> - hash = vsid ^ pgidx; >> - ctx->ptem = (vsid << 7) | (pgidx >> 10); >> - >> - qemu_log_mask(CPU_LOG_MMU, >> - "pte segment: key=%d ds %d nx %d vsid " TARGET_FMT_lx "\n", >> - ctx->key, ds, ctx->nx, vsid); >> - ret = -1; >> - if (!ds) { >> - /* Check if instruction fetch is allowed, if needed */ >> - if (type != ACCESS_CODE || ctx->nx == 0) { >> - /* Page address translation */ >> - qemu_log_mask(CPU_LOG_MMU, "htab_base " TARGET_FMT_plx >> - " htab_mask " TARGET_FMT_plx >> - " hash " TARGET_FMT_plx "\n", >> - ppc_hash32_hpt_base(cpu), ppc_hash32_hpt_mask(cpu), hash); >> - ctx->hash[0] = hash; >> - ctx->hash[1] = ~hash; >> - >> - /* Initialize real address with an invalid value */ >> - ctx->raddr = (hwaddr)-1ULL; >> - /* Software TLB search */ >> - ret = ppc6xx_tlb_check(env, ctx, eaddr, access_type); >> -#if defined(DUMP_PAGE_TABLES) >> - if (qemu_loglevel_mask(CPU_LOG_MMU)) { >> - CPUState *cs = env_cpu(env); >> - hwaddr curaddr; >> - uint32_t a0, a1, a2, a3; >> - >> - qemu_log("Page table: " TARGET_FMT_plx " len " TARGET_FMT_plx >> - "\n", ppc_hash32_hpt_base(cpu), >> - ppc_hash32_hpt_mask(env) + 0x80); >> - for (curaddr = ppc_hash32_hpt_base(cpu); >> - curaddr < (ppc_hash32_hpt_base(cpu) >> - + ppc_hash32_hpt_mask(cpu) + 0x80); >> - curaddr += 16) { >> - a0 = ldl_phys(cs->as, curaddr); >> - a1 = ldl_phys(cs->as, curaddr + 4); >> - a2 = ldl_phys(cs->as, curaddr + 8); >> - a3 = ldl_phys(cs->as, curaddr + 12); >> - if (a0 != 0 || a1 != 0 || a2 != 0 || a3 != 0) { >> - qemu_log(TARGET_FMT_plx ": %08x %08x %08x %08x\n", >> - curaddr, a0, a1, a2, a3); >> - } >> - } >> - } >> -#endif >> - } else { >> - qemu_log_mask(CPU_LOG_MMU, "No access allowed\n"); >> - ret = -3; >> - } >> - } else { >> - target_ulong sr; >> - >> - qemu_log_mask(CPU_LOG_MMU, "direct store...\n"); >> - /* Direct-store segment : absolutely *BUGGY* for now */ >> - >> - /* >> - * Direct-store implies a 32-bit MMU. >> - * Check the Segment Register's bus unit ID (BUID). >> - */ >> - sr = env->sr[eaddr >> 28]; >> - if ((sr & 0x1FF00000) >> 20 == 0x07f) { >> - /* >> - * Memory-forced I/O controller interface access >> - * >> - * If T=1 and BUID=x'07F', the 601 performs a memory >> - * access to SR[28-31] LA[4-31], bypassing all protection >> - * mechanisms. >> - */ >> - ctx->raddr = ((sr & 0xF) << 28) | (eaddr & 0x0FFFFFFF); >> - ctx->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; >> - return 0; >> - } >> - >> - switch (type) { >> - case ACCESS_INT: >> - /* Integer load/store : only access allowed */ >> - break; >> - case ACCESS_CODE: >> - /* No code fetch is allowed in direct-store areas */ >> - return -4; >> - case ACCESS_FLOAT: >> - /* Floating point load/store */ >> - return -4; >> - case ACCESS_RES: >> - /* lwarx, ldarx or srwcx. */ >> - return -4; >> - case ACCESS_CACHE: >> - /* >> - * dcba, dcbt, dcbtst, dcbf, dcbi, dcbst, dcbz, or icbi >> - * >> - * Should make the instruction do no-op. As it already do >> - * no-op, it's quite easy :-) >> - */ >> - ctx->raddr = eaddr; >> - return 0; >> - case ACCESS_EXT: >> - /* eciwx or ecowx */ >> - return -4; >> - default: >> - qemu_log_mask(CPU_LOG_MMU, "ERROR: instruction should not need " >> - "address translation\n"); >> - return -4; >> - } >> - if ((access_type == MMU_DATA_STORE || ctx->key != 1) && >> - (access_type == MMU_DATA_LOAD || ctx->key != 0)) { >> - ctx->raddr = eaddr; >> - ret = 2; >> - } else { >> - ret = -2; >> - } >> - } >> - >> - return ret; >> -} >> - >> -/* Generic TLB check function for embedded PowerPC implementations */ >> -static int ppcemb_tlb_check(CPUPPCState *env, ppcemb_tlb_t *tlb, >> - hwaddr *raddrp, >> - target_ulong address, uint32_t pid, int ext, >> - int i) >> -{ >> - target_ulong mask; >> - >> - /* Check valid flag */ >> - if (!(tlb->prot & PAGE_VALID)) { >> - return -1; >> - } >> - mask = ~(tlb->size - 1); >> - LOG_SWTLB("%s: TLB %d address " TARGET_FMT_lx " PID %u <=> " TARGET_FMT_lx >> - " " TARGET_FMT_lx " %u %x\n", __func__, i, address, pid, tlb->EPN, >> - mask, (uint32_t)tlb->PID, tlb->prot); >> - /* Check PID */ >> - if (tlb->PID != 0 && tlb->PID != pid) { >> - return -1; >> - } >> - /* Check effective address */ >> - if ((address & mask) != tlb->EPN) { >> - return -1; >> - } >> - *raddrp = (tlb->RPN & mask) | (address & ~mask); >> - if (ext) { >> - /* Extend the physical address to 36 bits */ >> - *raddrp |= (uint64_t)(tlb->RPN & 0xF) << 32; >> - } >> - >> - return 0; >> -} >> - >> -#ifdef CONFIG_TCG >> -/* Generic TLB search function for PowerPC embedded implementations */ >> -static int ppcemb_tlb_search(CPUPPCState *env, target_ulong address, >> - uint32_t pid) >> -{ >> - ppcemb_tlb_t *tlb; >> - hwaddr raddr; >> - int i, ret; >> - >> - /* Default return value is no match */ >> - ret = -1; >> - for (i = 0; i < env->nb_tlb; i++) { >> - tlb = &env->tlb.tlbe[i]; >> - if (ppcemb_tlb_check(env, tlb, &raddr, address, pid, 0, i) == 0) { >> - ret = i; >> - break; >> - } >> - } >> - >> - return ret; >> -} >> -#endif >> - >> -/* Helpers specific to PowerPC 40x implementations */ >> -static inline void ppc4xx_tlb_invalidate_all(CPUPPCState *env) >> -{ >> - ppcemb_tlb_t *tlb; >> - int i; >> - >> - for (i = 0; i < env->nb_tlb; i++) { >> - tlb = &env->tlb.tlbe[i]; >> - tlb->prot &= ~PAGE_VALID; >> - } >> - tlb_flush(env_cpu(env)); >> -} >> - >> -static int mmu40x_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, >> - target_ulong address, >> - MMUAccessType access_type) >> -{ >> - ppcemb_tlb_t *tlb; >> - hwaddr raddr; >> - int i, ret, zsel, zpr, pr; >> - >> - ret = -1; >> - raddr = (hwaddr)-1ULL; >> - pr = msr_pr; >> - for (i = 0; i < env->nb_tlb; i++) { >> - tlb = &env->tlb.tlbe[i]; >> - if (ppcemb_tlb_check(env, tlb, &raddr, address, >> - env->spr[SPR_40x_PID], 0, i) < 0) { >> - continue; >> - } >> - zsel = (tlb->attr >> 4) & 0xF; >> - zpr = (env->spr[SPR_40x_ZPR] >> (30 - (2 * zsel))) & 0x3; >> - LOG_SWTLB("%s: TLB %d zsel %d zpr %d ty %d attr %08x\n", >> - __func__, i, zsel, zpr, access_type, tlb->attr); >> - /* Check execute enable bit */ >> - switch (zpr) { >> - case 0x2: >> - if (pr != 0) { >> - goto check_perms; >> - } >> - /* fall through */ >> - case 0x3: >> - /* All accesses granted */ >> - ctx->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; >> - ret = 0; >> - break; >> - case 0x0: >> - if (pr != 0) { >> - /* Raise Zone protection fault. */ >> - env->spr[SPR_40x_ESR] = 1 << 22; >> - ctx->prot = 0; >> - ret = -2; >> - break; >> - } >> - /* fall through */ >> - case 0x1: >> - check_perms: >> - /* Check from TLB entry */ >> - ctx->prot = tlb->prot; >> - ret = check_prot(ctx->prot, access_type); >> - if (ret == -2) { >> - env->spr[SPR_40x_ESR] = 0; >> - } >> - break; >> - } >> - if (ret >= 0) { >> - ctx->raddr = raddr; >> - LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx >> - " %d %d\n", __func__, address, ctx->raddr, ctx->prot, >> - ret); >> - return 0; >> - } >> - } >> - LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx >> - " %d %d\n", __func__, address, raddr, ctx->prot, ret); >> - >> - return ret; >> -} >> - >> -void store_40x_sler(CPUPPCState *env, uint32_t val) >> -{ >> - /* XXX: TO BE FIXED */ >> - if (val != 0x00000000) { >> - cpu_abort(env_cpu(env), >> - "Little-endian regions are not supported by now\n"); >> - } >> - env->spr[SPR_405_SLER] = val; >> -} >> - >> -static int mmubooke_check_tlb(CPUPPCState *env, ppcemb_tlb_t *tlb, >> - hwaddr *raddr, int *prot, target_ulong address, >> - MMUAccessType access_type, int i) >> -{ >> - int prot2; >> - >> - if (ppcemb_tlb_check(env, tlb, raddr, address, >> - env->spr[SPR_BOOKE_PID], >> - !env->nb_pids, i) >= 0) { >> - goto found_tlb; >> - } >> - >> - if (env->spr[SPR_BOOKE_PID1] && >> - ppcemb_tlb_check(env, tlb, raddr, address, >> - env->spr[SPR_BOOKE_PID1], 0, i) >= 0) { >> - goto found_tlb; >> - } >> - >> - if (env->spr[SPR_BOOKE_PID2] && >> - ppcemb_tlb_check(env, tlb, raddr, address, >> - env->spr[SPR_BOOKE_PID2], 0, i) >= 0) { >> - goto found_tlb; >> - } >> - >> - LOG_SWTLB("%s: TLB entry not found\n", __func__); >> - return -1; >> - >> -found_tlb: >> - >> - if (msr_pr != 0) { >> - prot2 = tlb->prot & 0xF; >> - } else { >> - prot2 = (tlb->prot >> 4) & 0xF; >> - } >> - >> - /* Check the address space */ >> - if ((access_type == MMU_INST_FETCH ? msr_ir : msr_dr) != (tlb->attr & 1)) { >> - LOG_SWTLB("%s: AS doesn't match\n", __func__); >> - return -1; >> - } >> - >> - *prot = prot2; >> - if (prot2 & prot_for_access_type(access_type)) { >> - LOG_SWTLB("%s: good TLB!\n", __func__); >> - return 0; >> - } >> - >> - LOG_SWTLB("%s: no prot match: %x\n", __func__, prot2); >> - return access_type == MMU_INST_FETCH ? -3 : -2; >> -} >> - >> -static int mmubooke_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, >> - target_ulong address, >> - MMUAccessType access_type) >> -{ >> - ppcemb_tlb_t *tlb; >> - hwaddr raddr; >> - int i, ret; >> - >> - ret = -1; >> - raddr = (hwaddr)-1ULL; >> - for (i = 0; i < env->nb_tlb; i++) { >> - tlb = &env->tlb.tlbe[i]; >> - ret = mmubooke_check_tlb(env, tlb, &raddr, &ctx->prot, address, >> - access_type, i); >> - if (ret != -1) { >> - break; >> - } >> - } >> - >> - if (ret >= 0) { >> - ctx->raddr = raddr; >> - LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx >> - " %d %d\n", __func__, address, ctx->raddr, ctx->prot, >> - ret); >> - } else { >> - LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx >> - " %d %d\n", __func__, address, raddr, ctx->prot, ret); >> - } >> - >> - return ret; >> -} >> - >> -#ifdef CONFIG_TCG >> -static void booke206_flush_tlb(CPUPPCState *env, int flags, >> - const int check_iprot) >> -{ >> - int tlb_size; >> - int i, j; >> - ppcmas_tlb_t *tlb = env->tlb.tlbm; >> - >> - for (i = 0; i < BOOKE206_MAX_TLBN; i++) { >> - if (flags & (1 << i)) { >> - tlb_size = booke206_tlb_size(env, i); >> - for (j = 0; j < tlb_size; j++) { >> - if (!check_iprot || !(tlb[j].mas1 & MAS1_IPROT)) { >> - tlb[j].mas1 &= ~MAS1_VALID; >> - } >> - } >> - } >> - tlb += booke206_tlb_size(env, i); >> - } >> - >> - tlb_flush(env_cpu(env)); >> -} >> -#endif >> - >> -static hwaddr booke206_tlb_to_page_size(CPUPPCState *env, >> - ppcmas_tlb_t *tlb) >> -{ >> - int tlbm_size; >> - >> - tlbm_size = (tlb->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT; >> - >> - return 1024ULL << tlbm_size; >> -} >> - >> -/* TLB check function for MAS based SoftTLBs */ >> -static int ppcmas_tlb_check(CPUPPCState *env, ppcmas_tlb_t *tlb, >> - hwaddr *raddrp, target_ulong address, >> - uint32_t pid) >> -{ >> - hwaddr mask; >> - uint32_t tlb_pid; >> - >> - if (!msr_cm) { >> - /* In 32bit mode we can only address 32bit EAs */ >> - address = (uint32_t)address; >> - } >> - >> - /* Check valid flag */ >> - if (!(tlb->mas1 & MAS1_VALID)) { >> - return -1; >> - } >> - >> - mask = ~(booke206_tlb_to_page_size(env, tlb) - 1); >> - LOG_SWTLB("%s: TLB ADDR=0x" TARGET_FMT_lx " PID=0x%x MAS1=0x%x MAS2=0x%" >> - PRIx64 " mask=0x%" HWADDR_PRIx " MAS7_3=0x%" PRIx64 " MAS8=0x%" >> - PRIx32 "\n", __func__, address, pid, tlb->mas1, tlb->mas2, mask, >> - tlb->mas7_3, tlb->mas8); >> - >> - /* Check PID */ >> - tlb_pid = (tlb->mas1 & MAS1_TID_MASK) >> MAS1_TID_SHIFT; >> - if (tlb_pid != 0 && tlb_pid != pid) { >> - return -1; >> - } >> - >> - /* Check effective address */ >> - if ((address & mask) != (tlb->mas2 & MAS2_EPN_MASK)) { >> - return -1; >> - } >> - >> - if (raddrp) { >> - *raddrp = (tlb->mas7_3 & mask) | (address & ~mask); >> - } >> - >> - return 0; >> -} >> - >> -static bool is_epid_mmu(int mmu_idx) >> -{ >> - return mmu_idx == PPC_TLB_EPID_STORE || mmu_idx == PPC_TLB_EPID_LOAD; >> -} >> - >> -static uint32_t mmubooke206_esr(int mmu_idx, MMUAccessType access_type) >> -{ >> - uint32_t esr = 0; >> - if (access_type == MMU_DATA_STORE) { >> - esr |= ESR_ST; >> - } >> - if (is_epid_mmu(mmu_idx)) { >> - esr |= ESR_EPID; >> - } >> - return esr; >> -} >> - >> -/* >> - * Get EPID register given the mmu_idx. If this is regular load, >> - * construct the EPID access bits from current processor state >> - * >> - * Get the effective AS and PR bits and the PID. The PID is returned >> - * only if EPID load is requested, otherwise the caller must detect >> - * the correct EPID. Return true if valid EPID is returned. >> - */ >> -static bool mmubooke206_get_as(CPUPPCState *env, >> - int mmu_idx, uint32_t *epid_out, >> - bool *as_out, bool *pr_out) >> -{ >> - if (is_epid_mmu(mmu_idx)) { >> - uint32_t epidr; >> - if (mmu_idx == PPC_TLB_EPID_STORE) { >> - epidr = env->spr[SPR_BOOKE_EPSC]; >> - } else { >> - epidr = env->spr[SPR_BOOKE_EPLC]; >> - } >> - *epid_out = (epidr & EPID_EPID) >> EPID_EPID_SHIFT; >> - *as_out = !!(epidr & EPID_EAS); >> - *pr_out = !!(epidr & EPID_EPR); >> - return true; >> - } else { >> - *as_out = msr_ds; >> - *pr_out = msr_pr; >> - return false; >> - } >> -} >> - >> -/* Check if the tlb found by hashing really matches */ >> -static int mmubooke206_check_tlb(CPUPPCState *env, ppcmas_tlb_t *tlb, >> - hwaddr *raddr, int *prot, >> - target_ulong address, >> - MMUAccessType access_type, int mmu_idx) >> -{ >> - int prot2 = 0; >> - uint32_t epid; >> - bool as, pr; >> - bool use_epid = mmubooke206_get_as(env, mmu_idx, &epid, &as, &pr); >> - >> - if (!use_epid) { >> - if (ppcmas_tlb_check(env, tlb, raddr, address, >> - env->spr[SPR_BOOKE_PID]) >= 0) { >> - goto found_tlb; >> - } >> - >> - if (env->spr[SPR_BOOKE_PID1] && >> - ppcmas_tlb_check(env, tlb, raddr, address, >> - env->spr[SPR_BOOKE_PID1]) >= 0) { >> - goto found_tlb; >> - } >> - >> - if (env->spr[SPR_BOOKE_PID2] && >> - ppcmas_tlb_check(env, tlb, raddr, address, >> - env->spr[SPR_BOOKE_PID2]) >= 0) { >> - goto found_tlb; >> - } >> - } else { >> - if (ppcmas_tlb_check(env, tlb, raddr, address, epid) >= 0) { >> - goto found_tlb; >> - } >> - } >> - >> - LOG_SWTLB("%s: TLB entry not found\n", __func__); >> - return -1; >> - >> -found_tlb: >> - >> - if (pr) { >> - if (tlb->mas7_3 & MAS3_UR) { >> - prot2 |= PAGE_READ; >> - } >> - if (tlb->mas7_3 & MAS3_UW) { >> - prot2 |= PAGE_WRITE; >> - } >> - if (tlb->mas7_3 & MAS3_UX) { >> - prot2 |= PAGE_EXEC; >> - } >> - } else { >> - if (tlb->mas7_3 & MAS3_SR) { >> - prot2 |= PAGE_READ; >> - } >> - if (tlb->mas7_3 & MAS3_SW) { >> - prot2 |= PAGE_WRITE; >> - } >> - if (tlb->mas7_3 & MAS3_SX) { >> - prot2 |= PAGE_EXEC; >> - } >> - } >> - >> - /* Check the address space and permissions */ >> - if (access_type == MMU_INST_FETCH) { >> - /* There is no way to fetch code using epid load */ >> - assert(!use_epid); >> - as = msr_ir; >> - } >> - >> - if (as != ((tlb->mas1 & MAS1_TS) >> MAS1_TS_SHIFT)) { >> - LOG_SWTLB("%s: AS doesn't match\n", __func__); >> - return -1; >> - } >> - >> - *prot = prot2; >> - if (prot2 & prot_for_access_type(access_type)) { >> - LOG_SWTLB("%s: good TLB!\n", __func__); >> - return 0; >> - } >> - >> - LOG_SWTLB("%s: no prot match: %x\n", __func__, prot2); >> - return access_type == MMU_INST_FETCH ? -3 : -2; >> -} >> - >> -static int mmubooke206_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, >> - target_ulong address, >> - MMUAccessType access_type, >> - int mmu_idx) >> -{ >> - ppcmas_tlb_t *tlb; >> - hwaddr raddr; >> - int i, j, ret; >> - >> - ret = -1; >> - raddr = (hwaddr)-1ULL; >> - >> - for (i = 0; i < BOOKE206_MAX_TLBN; i++) { >> - int ways = booke206_tlb_ways(env, i); >> - >> - for (j = 0; j < ways; j++) { >> - tlb = booke206_get_tlbm(env, i, address, j); >> - if (!tlb) { >> - continue; >> - } >> - ret = mmubooke206_check_tlb(env, tlb, &raddr, &ctx->prot, address, >> - access_type, mmu_idx); >> - if (ret != -1) { >> - goto found_tlb; >> - } >> - } >> - } >> - >> -found_tlb: >> - >> - if (ret >= 0) { >> - ctx->raddr = raddr; >> - LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx >> - " %d %d\n", __func__, address, ctx->raddr, ctx->prot, >> - ret); >> - } else { >> - LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx >> - " %d %d\n", __func__, address, raddr, ctx->prot, ret); >> - } >> - >> - return ret; >> -} >> - >> -static const char *book3e_tsize_to_str[32] = { >> - "1K", "2K", "4K", "8K", "16K", "32K", "64K", "128K", "256K", "512K", >> - "1M", "2M", "4M", "8M", "16M", "32M", "64M", "128M", "256M", "512M", >> - "1G", "2G", "4G", "8G", "16G", "32G", "64G", "128G", "256G", "512G", >> - "1T", "2T" >> -}; >> - >> -static void mmubooke_dump_mmu(CPUPPCState *env) >> -{ >> - ppcemb_tlb_t *entry; >> - int i; >> - >> - if (kvm_enabled() && !env->kvm_sw_tlb) { >> - qemu_printf("Cannot access KVM TLB\n"); >> - return; >> - } >> - >> - qemu_printf("\nTLB:\n"); >> - qemu_printf("Effective Physical Size PID Prot " >> - "Attr\n"); >> - >> - entry = &env->tlb.tlbe[0]; >> - for (i = 0; i < env->nb_tlb; i++, entry++) { >> - hwaddr ea, pa; >> - target_ulong mask; >> - uint64_t size = (uint64_t)entry->size; >> - char size_buf[20]; >> - >> - /* Check valid flag */ >> - if (!(entry->prot & PAGE_VALID)) { >> - continue; >> - } >> - >> - mask = ~(entry->size - 1); >> - ea = entry->EPN & mask; >> - pa = entry->RPN & mask; >> - /* Extend the physical address to 36 bits */ >> - pa |= (hwaddr)(entry->RPN & 0xF) << 32; >> - if (size >= 1 * MiB) { >> - snprintf(size_buf, sizeof(size_buf), "%3" PRId64 "M", size / MiB); >> - } else { >> - snprintf(size_buf, sizeof(size_buf), "%3" PRId64 "k", size / KiB); >> - } >> - qemu_printf("0x%016" PRIx64 " 0x%016" PRIx64 " %s %-5u %08x %08x\n", >> - (uint64_t)ea, (uint64_t)pa, size_buf, (uint32_t)entry->PID, >> - entry->prot, entry->attr); >> - } >> - >> -} >> - >> -static void mmubooke206_dump_one_tlb(CPUPPCState *env, int tlbn, int offset, >> - int tlbsize) >> -{ >> - ppcmas_tlb_t *entry; >> - int i; >> - >> - qemu_printf("\nTLB%d:\n", tlbn); >> - qemu_printf("Effective Physical Size TID TS SRWX" >> - " URWX WIMGE U0123\n"); >> - >> - entry = &env->tlb.tlbm[offset]; >> - for (i = 0; i < tlbsize; i++, entry++) { >> - hwaddr ea, pa, size; >> - int tsize; >> - >> - if (!(entry->mas1 & MAS1_VALID)) { >> - continue; >> - } >> - >> - tsize = (entry->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT; >> - size = 1024ULL << tsize; >> - ea = entry->mas2 & ~(size - 1); >> - pa = entry->mas7_3 & ~(size - 1); >> - >> - qemu_printf("0x%016" PRIx64 " 0x%016" PRIx64 " %4s %-5u %1u S%c%c%c" >> - "U%c%c%c %c%c%c%c%c U%c%c%c%c\n", >> - (uint64_t)ea, (uint64_t)pa, >> - book3e_tsize_to_str[tsize], >> - (entry->mas1 & MAS1_TID_MASK) >> MAS1_TID_SHIFT, >> - (entry->mas1 & MAS1_TS) >> MAS1_TS_SHIFT, >> - entry->mas7_3 & MAS3_SR ? 'R' : '-', >> - entry->mas7_3 & MAS3_SW ? 'W' : '-', >> - entry->mas7_3 & MAS3_SX ? 'X' : '-', >> - entry->mas7_3 & MAS3_UR ? 'R' : '-', >> - entry->mas7_3 & MAS3_UW ? 'W' : '-', >> - entry->mas7_3 & MAS3_UX ? 'X' : '-', >> - entry->mas2 & MAS2_W ? 'W' : '-', >> - entry->mas2 & MAS2_I ? 'I' : '-', >> - entry->mas2 & MAS2_M ? 'M' : '-', >> - entry->mas2 & MAS2_G ? 'G' : '-', >> - entry->mas2 & MAS2_E ? 'E' : '-', >> - entry->mas7_3 & MAS3_U0 ? '0' : '-', >> - entry->mas7_3 & MAS3_U1 ? '1' : '-', >> - entry->mas7_3 & MAS3_U2 ? '2' : '-', >> - entry->mas7_3 & MAS3_U3 ? '3' : '-'); >> - } >> -} >> - >> -static void mmubooke206_dump_mmu(CPUPPCState *env) >> -{ >> - int offset = 0; >> - int i; >> - >> - if (kvm_enabled() && !env->kvm_sw_tlb) { >> - qemu_printf("Cannot access KVM TLB\n"); >> - return; >> - } >> +/* #define DEBUG_BATS */ >> +/* #define DEBUG_SOFTWARE_TLB */ >> +/* #define DUMP_PAGE_TABLES */ >> +/* #define FLUSH_ALL_TLBS */ >> >> - for (i = 0; i < BOOKE206_MAX_TLBN; i++) { >> - int size = booke206_tlb_size(env, i); >> +#ifdef DEBUG_SOFTWARE_TLB >> +# define LOG_SWTLB(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__) >> +#else >> +# define LOG_SWTLB(...) do { } while (0) >> +#endif >> >> - if (size == 0) { >> - continue; >> - } >> +#ifdef DEBUG_BATS >> +# define LOG_BATS(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__) >> +#else >> +# define LOG_BATS(...) do { } while (0) >> +#endif >> >> - mmubooke206_dump_one_tlb(env, i, offset, size); >> - offset += size; >> - } >> -} >> +/*****************************************************************************/ >> +/* PowerPC MMU emulation */ >> >> -static void mmu6xx_dump_BATs(CPUPPCState *env, int type) >> +/* Software driven TLB helpers */ >> +static inline void ppc6xx_tlb_invalidate_all(CPUPPCState *env) >> { >> - target_ulong *BATlt, *BATut, *BATu, *BATl; >> - target_ulong BEPIl, BEPIu, bl; >> - int i; >> + ppc6xx_tlb_t *tlb; >> + int nr, max; >> >> - switch (type) { >> - case ACCESS_CODE: >> - BATlt = env->IBAT[1]; >> - BATut = env->IBAT[0]; >> - break; >> - default: >> - BATlt = env->DBAT[1]; >> - BATut = env->DBAT[0]; >> - break; >> + /* LOG_SWTLB("Invalidate all TLBs\n"); */ >> + /* Invalidate all defined software TLB */ >> + max = env->nb_tlb; >> + if (env->id_tlbs == 1) { >> + max *= 2; >> } >> - >> - for (i = 0; i < env->nb_BATs; i++) { >> - BATu = &BATut[i]; >> - BATl = &BATlt[i]; >> - BEPIu = *BATu & 0xF0000000; >> - BEPIl = *BATu & 0x0FFE0000; >> - bl = (*BATu & 0x00001FFC) << 15; >> - qemu_printf("%s BAT%d BATu " TARGET_FMT_lx >> - " BATl " TARGET_FMT_lx "\n\t" TARGET_FMT_lx " " >> - TARGET_FMT_lx " " TARGET_FMT_lx "\n", >> - type == ACCESS_CODE ? "code" : "data", i, >> - *BATu, *BATl, BEPIu, BEPIl, bl); >> + for (nr = 0; nr < max; nr++) { >> + tlb = &env->tlb.tlb6[nr]; >> + pte_invalidate(&tlb->pte0); >> } >> + tlb_flush(env_cpu(env)); >> } >> >> -static void mmu6xx_dump_mmu(CPUPPCState *env) >> +static inline void ppc6xx_tlb_invalidate_virt2(CPUPPCState *env, >> + target_ulong eaddr, >> + int is_code, int match_epn) >> { >> - PowerPCCPU *cpu = env_archcpu(env); >> +#if !defined(FLUSH_ALL_TLBS) >> + CPUState *cs = env_cpu(env); >> ppc6xx_tlb_t *tlb; >> - target_ulong sr; >> - int type, way, entry, i; >> - >> - qemu_printf("HTAB base = 0x%"HWADDR_PRIx"\n", ppc_hash32_hpt_base(cpu)); >> - qemu_printf("HTAB mask = 0x%"HWADDR_PRIx"\n", ppc_hash32_hpt_mask(cpu)); >> - >> - qemu_printf("\nSegment registers:\n"); >> - for (i = 0; i < 32; i++) { >> - sr = env->sr[i]; >> - if (sr & 0x80000000) { >> - qemu_printf("%02d T=%d Ks=%d Kp=%d BUID=0x%03x " >> - "CNTLR_SPEC=0x%05x\n", i, >> - sr & 0x80000000 ? 1 : 0, sr & 0x40000000 ? 1 : 0, >> - sr & 0x20000000 ? 1 : 0, (uint32_t)((sr >> 20) & 0x1FF), >> - (uint32_t)(sr & 0xFFFFF)); >> - } else { >> - qemu_printf("%02d T=%d Ks=%d Kp=%d N=%d VSID=0x%06x\n", i, >> - sr & 0x80000000 ? 1 : 0, sr & 0x40000000 ? 1 : 0, >> - sr & 0x20000000 ? 1 : 0, sr & 0x10000000 ? 1 : 0, >> - (uint32_t)(sr & 0x00FFFFFF)); >> - } >> - } >> - >> - qemu_printf("\nBATs:\n"); >> - mmu6xx_dump_BATs(env, ACCESS_INT); >> - mmu6xx_dump_BATs(env, ACCESS_CODE); >> - >> - if (env->id_tlbs != 1) { >> - qemu_printf("ERROR: 6xx MMU should have separated TLB" >> - " for code and data\n"); >> - } >> + int way, nr; >> >> - qemu_printf("\nTLBs [EPN EPN + SIZE]\n"); >> - >> - for (type = 0; type < 2; type++) { >> - for (way = 0; way < env->nb_ways; way++) { >> - for (entry = env->nb_tlb * type + env->tlb_per_way * way; >> - entry < (env->nb_tlb * type + env->tlb_per_way * (way + 1)); >> - entry++) { >> - >> - tlb = &env->tlb.tlb6[entry]; >> - qemu_printf("%s TLB %02d/%02d way:%d %s [" >> - TARGET_FMT_lx " " TARGET_FMT_lx "]\n", >> - type ? "code" : "data", entry % env->nb_tlb, >> - env->nb_tlb, way, >> - pte_is_valid(tlb->pte0) ? "valid" : "inval", >> - tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE); >> - } >> + /* Invalidate ITLB + DTLB, all ways */ >> + for (way = 0; way < env->nb_ways; way++) { >> + nr = ppc6xx_tlb_getnum(env, eaddr, way, is_code); >> + tlb = &env->tlb.tlb6[nr]; >> + if (pte_is_valid(tlb->pte0) && (match_epn == 0 || eaddr == tlb->EPN)) { >> + LOG_SWTLB("TLB invalidate %d/%d " TARGET_FMT_lx "\n", nr, >> + env->nb_tlb, eaddr); >> + pte_invalidate(&tlb->pte0); >> + tlb_flush_page(cs, tlb->EPN); >> } >> } >> -} >> - >> -void dump_mmu(CPUPPCState *env) >> -{ >> - switch (env->mmu_model) { >> - case POWERPC_MMU_BOOKE: >> - mmubooke_dump_mmu(env); >> - break; >> - case POWERPC_MMU_BOOKE206: >> - mmubooke206_dump_mmu(env); >> - break; >> - case POWERPC_MMU_SOFT_6xx: >> - case POWERPC_MMU_SOFT_74xx: >> - mmu6xx_dump_mmu(env); >> - break; >> -#if defined(TARGET_PPC64) >> - case POWERPC_MMU_64B: >> - case POWERPC_MMU_2_03: >> - case POWERPC_MMU_2_06: >> - case POWERPC_MMU_2_07: >> - dump_slb(env_archcpu(env)); >> - break; >> - case POWERPC_MMU_3_00: >> - if (ppc64_v3_radix(env_archcpu(env))) { >> - qemu_log_mask(LOG_UNIMP, "%s: the PPC64 MMU is unsupported\n", >> - __func__); >> - } else { >> - dump_slb(env_archcpu(env)); >> - } >> - break; >> +#else >> + /* XXX: PowerPC specification say this is valid as well */ >> + ppc6xx_tlb_invalidate_all(env); >> #endif >> - default: >> - qemu_log_mask(LOG_UNIMP, "%s: unimplemented\n", __func__); >> - } >> } >> >> -static int check_physical(CPUPPCState *env, mmu_ctx_t *ctx, target_ulong eaddr, >> - MMUAccessType access_type) >> +static inline void ppc6xx_tlb_invalidate_virt(CPUPPCState *env, >> + target_ulong eaddr, int is_code) >> { >> - int in_plb, ret; >> - >> - ctx->raddr = eaddr; >> - ctx->prot = PAGE_READ | PAGE_EXEC; >> - ret = 0; >> - switch (env->mmu_model) { >> - case POWERPC_MMU_SOFT_6xx: >> - case POWERPC_MMU_SOFT_74xx: >> - case POWERPC_MMU_SOFT_4xx: >> - case POWERPC_MMU_REAL: >> - case POWERPC_MMU_BOOKE: >> - ctx->prot |= PAGE_WRITE; >> - break; >> - >> - case POWERPC_MMU_SOFT_4xx_Z: >> - if (unlikely(msr_pe != 0)) { >> - /* >> - * 403 family add some particular protections, using >> - * PBL/PBU registers for accesses with no translation. >> - */ >> - in_plb = >> - /* Check PLB validity */ >> - (env->pb[0] < env->pb[1] && >> - /* and address in plb area */ >> - eaddr >= env->pb[0] && eaddr < env->pb[1]) || >> - (env->pb[2] < env->pb[3] && >> - eaddr >= env->pb[2] && eaddr < env->pb[3]) ? 1 : 0; >> - if (in_plb ^ msr_px) { >> - /* Access in protected area */ >> - if (access_type == MMU_DATA_STORE) { >> - /* Access is not allowed */ >> - ret = -2; >> - } >> - } else { >> - /* Read-write access is allowed */ >> - ctx->prot |= PAGE_WRITE; >> - } >> - } >> - break; >> - >> - default: >> - /* Caller's checks mean we should never get here for other models */ >> - abort(); >> - return -1; >> - } >> - >> - return ret; >> + ppc6xx_tlb_invalidate_virt2(env, eaddr, is_code, 0); >> } >> >> -static int get_physical_address_wtlb(CPUPPCState *env, mmu_ctx_t *ctx, >> - target_ulong eaddr, >> - MMUAccessType access_type, int type, >> - int mmu_idx) >> +static void ppc6xx_tlb_store(CPUPPCState *env, target_ulong EPN, int way, >> + int is_code, target_ulong pte0, target_ulong pte1) >> { >> - int ret = -1; >> - bool real_mode = (type == ACCESS_CODE && msr_ir == 0) >> - || (type != ACCESS_CODE && msr_dr == 0); >> - >> - switch (env->mmu_model) { >> - case POWERPC_MMU_SOFT_6xx: >> - case POWERPC_MMU_SOFT_74xx: >> - if (real_mode) { >> - ret = check_physical(env, ctx, eaddr, access_type); >> - } else { >> - /* Try to find a BAT */ >> - if (env->nb_BATs != 0) { >> - ret = get_bat_6xx_tlb(env, ctx, eaddr, access_type); >> - } >> - if (ret < 0) { >> - /* We didn't match any BAT entry or don't have BATs */ >> - ret = get_segment_6xx_tlb(env, ctx, eaddr, access_type, type); >> - } >> - } >> - break; >> - >> - case POWERPC_MMU_SOFT_4xx: >> - case POWERPC_MMU_SOFT_4xx_Z: >> - if (real_mode) { >> - ret = check_physical(env, ctx, eaddr, access_type); >> - } else { >> - ret = mmu40x_get_physical_address(env, ctx, eaddr, access_type); >> - } >> - break; >> - case POWERPC_MMU_BOOKE: >> - ret = mmubooke_get_physical_address(env, ctx, eaddr, access_type); >> - break; >> - case POWERPC_MMU_BOOKE206: >> - ret = mmubooke206_get_physical_address(env, ctx, eaddr, access_type, >> - mmu_idx); >> - break; >> - case POWERPC_MMU_MPC8xx: >> - /* XXX: TODO */ >> - cpu_abort(env_cpu(env), "MPC8xx MMU model is not implemented\n"); >> - break; >> - case POWERPC_MMU_REAL: >> - if (real_mode) { >> - ret = check_physical(env, ctx, eaddr, access_type); >> - } else { >> - cpu_abort(env_cpu(env), >> - "PowerPC in real mode do not do any translation\n"); >> - } >> - return -1; >> - default: >> - cpu_abort(env_cpu(env), "Unknown or invalid MMU model\n"); >> - return -1; >> - } >> - >> - return ret; >> -} >> + ppc6xx_tlb_t *tlb; >> + int nr; >> >> -#ifdef CONFIG_TCG >> -static int get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, >> - target_ulong eaddr, MMUAccessType access_type, >> - int type) >> -{ >> - return get_physical_address_wtlb(env, ctx, eaddr, access_type, type, 0); >> + nr = ppc6xx_tlb_getnum(env, EPN, way, is_code); >> + tlb = &env->tlb.tlb6[nr]; >> + LOG_SWTLB("Set TLB %d/%d EPN " TARGET_FMT_lx " PTE0 " TARGET_FMT_lx >> + " PTE1 " TARGET_FMT_lx "\n", nr, env->nb_tlb, EPN, pte0, pte1); >> + /* Invalidate any pending reference in QEMU for this virtual address */ >> + ppc6xx_tlb_invalidate_virt2(env, EPN, is_code, 1); >> + tlb->pte0 = pte0; >> + tlb->pte1 = pte1; >> + tlb->EPN = EPN; >> + /* Store last way for LRU mechanism */ >> + env->last_way = way; >> } >> -#endif >> >> -hwaddr ppc_cpu_get_phys_page_debug(CPUState *cs, vaddr addr) >> +/* Generic TLB search function for PowerPC embedded implementations */ >> +static int ppcemb_tlb_search(CPUPPCState *env, target_ulong address, >> + uint32_t pid) >> { >> - PowerPCCPU *cpu = POWERPC_CPU(cs); >> - CPUPPCState *env = &cpu->env; >> - mmu_ctx_t ctx; >> - >> - switch (env->mmu_model) { >> -#if defined(TARGET_PPC64) >> - case POWERPC_MMU_64B: >> - case POWERPC_MMU_2_03: >> - case POWERPC_MMU_2_06: >> - case POWERPC_MMU_2_07: >> - return ppc_hash64_get_phys_page_debug(cpu, addr); >> - case POWERPC_MMU_3_00: >> - return ppc64_v3_get_phys_page_debug(cpu, addr); >> -#endif >> - >> - case POWERPC_MMU_32B: >> - case POWERPC_MMU_601: >> - return ppc_hash32_get_phys_page_debug(cpu, addr); >> - >> - default: >> - ; >> - } >> - >> - if (unlikely(get_physical_address(env, &ctx, addr, MMU_DATA_LOAD, >> - ACCESS_INT) != 0)) { >> + ppcemb_tlb_t *tlb; >> + hwaddr raddr; >> + int i, ret; >> >> - /* >> - * Some MMUs have separate TLBs for code and data. If we only >> - * try an ACCESS_INT, we may not be able to read instructions >> - * mapped by code TLBs, so we also try a ACCESS_CODE. >> - */ >> - if (unlikely(get_physical_address(env, &ctx, addr, MMU_INST_FETCH, >> - ACCESS_CODE) != 0)) { >> - return -1; >> + /* Default return value is no match */ >> + ret = -1; >> + for (i = 0; i < env->nb_tlb; i++) { >> + tlb = &env->tlb.tlbe[i]; >> + if (ppcemb_tlb_check(env, tlb, &raddr, address, pid, 0, i) == 0) { >> + ret = i; >> + break; >> } >> } >> >> - return ctx.raddr & TARGET_PAGE_MASK; >> + return ret; >> } >> >> -static void booke206_update_mas_tlb_miss(CPUPPCState *env, target_ulong address, >> - MMUAccessType access_type, int mmu_idx) >> +/* Helpers specific to PowerPC 40x implementations */ >> +static inline void ppc4xx_tlb_invalidate_all(CPUPPCState *env) >> { >> - uint32_t epid; >> - bool as, pr; >> - uint32_t missed_tid = 0; >> - bool use_epid = mmubooke206_get_as(env, mmu_idx, &epid, &as, &pr); >> - >> - if (access_type == MMU_INST_FETCH) { >> - as = msr_ir; >> - } >> - env->spr[SPR_BOOKE_MAS0] = env->spr[SPR_BOOKE_MAS4] & MAS4_TLBSELD_MASK; >> - env->spr[SPR_BOOKE_MAS1] = env->spr[SPR_BOOKE_MAS4] & MAS4_TSIZED_MASK; >> - env->spr[SPR_BOOKE_MAS2] = env->spr[SPR_BOOKE_MAS4] & MAS4_WIMGED_MASK; >> - env->spr[SPR_BOOKE_MAS3] = 0; >> - env->spr[SPR_BOOKE_MAS6] = 0; >> - env->spr[SPR_BOOKE_MAS7] = 0; >> - >> - /* AS */ >> - if (as) { >> - env->spr[SPR_BOOKE_MAS1] |= MAS1_TS; >> - env->spr[SPR_BOOKE_MAS6] |= MAS6_SAS; >> - } >> - >> - env->spr[SPR_BOOKE_MAS1] |= MAS1_VALID; >> - env->spr[SPR_BOOKE_MAS2] |= address & MAS2_EPN_MASK; >> + ppcemb_tlb_t *tlb; >> + int i; >> >> - if (!use_epid) { >> - switch (env->spr[SPR_BOOKE_MAS4] & MAS4_TIDSELD_PIDZ) { >> - case MAS4_TIDSELD_PID0: >> - missed_tid = env->spr[SPR_BOOKE_PID]; >> - break; >> - case MAS4_TIDSELD_PID1: >> - missed_tid = env->spr[SPR_BOOKE_PID1]; >> - break; >> - case MAS4_TIDSELD_PID2: >> - missed_tid = env->spr[SPR_BOOKE_PID2]; >> - break; >> - } >> - env->spr[SPR_BOOKE_MAS6] |= env->spr[SPR_BOOKE_PID] << 16; >> - } else { >> - missed_tid = epid; >> - env->spr[SPR_BOOKE_MAS6] |= missed_tid << 16; >> + for (i = 0; i < env->nb_tlb; i++) { >> + tlb = &env->tlb.tlbe[i]; >> + tlb->prot &= ~PAGE_VALID; >> } >> - env->spr[SPR_BOOKE_MAS1] |= (missed_tid << MAS1_TID_SHIFT); >> - >> - >> - /* next victim logic */ >> - env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_ESEL_SHIFT; >> - env->last_way++; >> - env->last_way &= booke206_tlb_ways(env, 0) - 1; >> - env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_NV_SHIFT; >> + tlb_flush(env_cpu(env)); >> } >> >> -/* Perform address translation */ >> -static int cpu_ppc_handle_mmu_fault(CPUPPCState *env, target_ulong address, >> - MMUAccessType access_type, int mmu_idx) >> +static void booke206_flush_tlb(CPUPPCState *env, int flags, >> + const int check_iprot) >> { >> - CPUState *cs = env_cpu(env); >> - PowerPCCPU *cpu = POWERPC_CPU(cs); >> - mmu_ctx_t ctx; >> - int type; >> - int ret = 0; >> + int tlb_size; >> + int i, j; >> + ppcmas_tlb_t *tlb = env->tlb.tlbm; >> >> - if (access_type == MMU_INST_FETCH) { >> - /* code access */ >> - type = ACCESS_CODE; >> - } else { >> - /* data access */ >> - type = env->access_type; >> - } >> - ret = get_physical_address_wtlb(env, &ctx, address, access_type, >> - type, mmu_idx); >> - if (ret == 0) { >> - tlb_set_page(cs, address & TARGET_PAGE_MASK, >> - ctx.raddr & TARGET_PAGE_MASK, ctx.prot, >> - mmu_idx, TARGET_PAGE_SIZE); >> - ret = 0; >> - } else if (ret < 0) { >> - LOG_MMU_STATE(cs); >> - if (type == ACCESS_CODE) { >> - switch (ret) { >> - case -1: >> - /* No matches in page tables or TLB */ >> - switch (env->mmu_model) { >> - case POWERPC_MMU_SOFT_6xx: >> - cs->exception_index = POWERPC_EXCP_IFTLB; >> - env->error_code = 1 << 18; >> - env->spr[SPR_IMISS] = address; >> - env->spr[SPR_ICMP] = 0x80000000 | ctx.ptem; >> - goto tlb_miss; >> - case POWERPC_MMU_SOFT_74xx: >> - cs->exception_index = POWERPC_EXCP_IFTLB; >> - goto tlb_miss_74xx; >> - case POWERPC_MMU_SOFT_4xx: >> - case POWERPC_MMU_SOFT_4xx_Z: >> - cs->exception_index = POWERPC_EXCP_ITLB; >> - env->error_code = 0; >> - env->spr[SPR_40x_DEAR] = address; >> - env->spr[SPR_40x_ESR] = 0x00000000; >> - break; >> - case POWERPC_MMU_BOOKE206: >> - booke206_update_mas_tlb_miss(env, address, 2, mmu_idx); >> - /* fall through */ >> - case POWERPC_MMU_BOOKE: >> - cs->exception_index = POWERPC_EXCP_ITLB; >> - env->error_code = 0; >> - env->spr[SPR_BOOKE_DEAR] = address; >> - env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx, MMU_DATA_LOAD); >> - return -1; >> - case POWERPC_MMU_MPC8xx: >> - /* XXX: TODO */ >> - cpu_abort(cs, "MPC8xx MMU model is not implemented\n"); >> - break; >> - case POWERPC_MMU_REAL: >> - cpu_abort(cs, "PowerPC in real mode should never raise " >> - "any MMU exceptions\n"); >> - return -1; >> - default: >> - cpu_abort(cs, "Unknown or invalid MMU model\n"); >> - return -1; >> - } >> - break; >> - case -2: >> - /* Access rights violation */ >> - cs->exception_index = POWERPC_EXCP_ISI; >> - env->error_code = 0x08000000; >> - break; >> - case -3: >> - /* No execute protection violation */ >> - if ((env->mmu_model == POWERPC_MMU_BOOKE) || >> - (env->mmu_model == POWERPC_MMU_BOOKE206)) { >> - env->spr[SPR_BOOKE_ESR] = 0x00000000; >> - } >> - cs->exception_index = POWERPC_EXCP_ISI; >> - env->error_code = 0x10000000; >> - break; >> - case -4: >> - /* Direct store exception */ >> - /* No code fetch is allowed in direct-store areas */ >> - cs->exception_index = POWERPC_EXCP_ISI; >> - env->error_code = 0x10000000; >> - break; >> - } >> - } else { >> - switch (ret) { >> - case -1: >> - /* No matches in page tables or TLB */ >> - switch (env->mmu_model) { >> - case POWERPC_MMU_SOFT_6xx: >> - if (access_type == MMU_DATA_STORE) { >> - cs->exception_index = POWERPC_EXCP_DSTLB; >> - env->error_code = 1 << 16; >> - } else { >> - cs->exception_index = POWERPC_EXCP_DLTLB; >> - env->error_code = 0; >> - } >> - env->spr[SPR_DMISS] = address; >> - env->spr[SPR_DCMP] = 0x80000000 | ctx.ptem; >> - tlb_miss: >> - env->error_code |= ctx.key << 19; >> - env->spr[SPR_HASH1] = ppc_hash32_hpt_base(cpu) + >> - get_pteg_offset32(cpu, ctx.hash[0]); >> - env->spr[SPR_HASH2] = ppc_hash32_hpt_base(cpu) + >> - get_pteg_offset32(cpu, ctx.hash[1]); >> - break; >> - case POWERPC_MMU_SOFT_74xx: >> - if (access_type == MMU_DATA_STORE) { >> - cs->exception_index = POWERPC_EXCP_DSTLB; >> - } else { >> - cs->exception_index = POWERPC_EXCP_DLTLB; >> - } >> - tlb_miss_74xx: >> - /* Implement LRU algorithm */ >> - env->error_code = ctx.key << 19; >> - env->spr[SPR_TLBMISS] = (address & ~((target_ulong)0x3)) | >> - ((env->last_way + 1) & (env->nb_ways - 1)); >> - env->spr[SPR_PTEHI] = 0x80000000 | ctx.ptem; >> - break; >> - case POWERPC_MMU_SOFT_4xx: >> - case POWERPC_MMU_SOFT_4xx_Z: >> - cs->exception_index = POWERPC_EXCP_DTLB; >> - env->error_code = 0; >> - env->spr[SPR_40x_DEAR] = address; >> - if (access_type == MMU_DATA_STORE) { >> - env->spr[SPR_40x_ESR] = 0x00800000; >> - } else { >> - env->spr[SPR_40x_ESR] = 0x00000000; >> - } >> - break; >> - case POWERPC_MMU_MPC8xx: >> - /* XXX: TODO */ >> - cpu_abort(cs, "MPC8xx MMU model is not implemented\n"); >> - break; >> - case POWERPC_MMU_BOOKE206: >> - booke206_update_mas_tlb_miss(env, address, access_type, mmu_idx); >> - /* fall through */ >> - case POWERPC_MMU_BOOKE: >> - cs->exception_index = POWERPC_EXCP_DTLB; >> - env->error_code = 0; >> - env->spr[SPR_BOOKE_DEAR] = address; >> - env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx, access_type); >> - return -1; >> - case POWERPC_MMU_REAL: >> - cpu_abort(cs, "PowerPC in real mode should never raise " >> - "any MMU exceptions\n"); >> - return -1; >> - default: >> - cpu_abort(cs, "Unknown or invalid MMU model\n"); >> - return -1; >> - } >> - break; >> - case -2: >> - /* Access rights violation */ >> - cs->exception_index = POWERPC_EXCP_DSI; >> - env->error_code = 0; >> - if (env->mmu_model == POWERPC_MMU_SOFT_4xx >> - || env->mmu_model == POWERPC_MMU_SOFT_4xx_Z) { >> - env->spr[SPR_40x_DEAR] = address; >> - if (access_type == MMU_DATA_STORE) { >> - env->spr[SPR_40x_ESR] |= 0x00800000; >> - } >> - } else if ((env->mmu_model == POWERPC_MMU_BOOKE) || >> - (env->mmu_model == POWERPC_MMU_BOOKE206)) { >> - env->spr[SPR_BOOKE_DEAR] = address; >> - env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx, access_type); >> - } else { >> - env->spr[SPR_DAR] = address; >> - if (access_type == MMU_DATA_STORE) { >> - env->spr[SPR_DSISR] = 0x0A000000; >> - } else { >> - env->spr[SPR_DSISR] = 0x08000000; >> - } >> - } >> - break; >> - case -4: >> - /* Direct store exception */ >> - switch (type) { >> - case ACCESS_FLOAT: >> - /* Floating point load/store */ >> - cs->exception_index = POWERPC_EXCP_ALIGN; >> - env->error_code = POWERPC_EXCP_ALIGN_FP; >> - env->spr[SPR_DAR] = address; >> - break; >> - case ACCESS_RES: >> - /* lwarx, ldarx or stwcx. */ >> - cs->exception_index = POWERPC_EXCP_DSI; >> - env->error_code = 0; >> - env->spr[SPR_DAR] = address; >> - if (access_type == MMU_DATA_STORE) { >> - env->spr[SPR_DSISR] = 0x06000000; >> - } else { >> - env->spr[SPR_DSISR] = 0x04000000; >> - } >> - break; >> - case ACCESS_EXT: >> - /* eciwx or ecowx */ >> - cs->exception_index = POWERPC_EXCP_DSI; >> - env->error_code = 0; >> - env->spr[SPR_DAR] = address; >> - if (access_type == MMU_DATA_STORE) { >> - env->spr[SPR_DSISR] = 0x06100000; >> - } else { >> - env->spr[SPR_DSISR] = 0x04100000; >> - } >> - break; >> - default: >> - printf("DSI: invalid exception (%d)\n", ret); >> - cs->exception_index = POWERPC_EXCP_PROGRAM; >> - env->error_code = >> - POWERPC_EXCP_INVAL | POWERPC_EXCP_INVAL_INVAL; >> - env->spr[SPR_DAR] = address; >> - break; >> + for (i = 0; i < BOOKE206_MAX_TLBN; i++) { >> + if (flags & (1 << i)) { >> + tlb_size = booke206_tlb_size(env, i); >> + for (j = 0; j < tlb_size; j++) { >> + if (!check_iprot || !(tlb[j].mas1 & MAS1_IPROT)) { >> + tlb[j].mas1 &= ~MAS1_VALID; >> } >> - break; >> } >> } >> - ret = 1; >> + tlb += booke206_tlb_size(env, i); >> } >> >> - return ret; >> + tlb_flush(env_cpu(env)); >> } >> >> -#ifdef CONFIG_TCG >> + >> /*****************************************************************************/ >> /* BATs management */ >> #if !defined(FLUSH_ALL_TLBS) >> @@ -1952,9 +372,7 @@ void helper_store_601_batl(CPUPPCState *env, uint32_t nr, target_ulong value) >> #endif >> } >> } >> -#endif >> >> -#ifdef CONFIG_TCG >> /*****************************************************************************/ >> /* TLB management */ >> void ppc_tlb_invalidate_all(CPUPPCState *env) >> @@ -1998,9 +416,7 @@ void ppc_tlb_invalidate_all(CPUPPCState *env) >> break; >> } >> } >> -#endif >> >> -#ifdef CONFIG_TCG >> void ppc_tlb_invalidate_one(CPUPPCState *env, target_ulong addr) >> { >> #if !defined(FLUSH_ALL_TLBS) >> @@ -2942,30 +1358,6 @@ void helper_check_tlb_flush_global(CPUPPCState *env) >> { >> check_tlb_flush(env, true); >> } >> -#endif /* CONFIG_TCG */ >> >> /*****************************************************************************/ >> >> -bool ppc_cpu_tlb_fill(CPUState *cs, vaddr addr, int size, >> - MMUAccessType access_type, int mmu_idx, >> - bool probe, uintptr_t retaddr) >> -{ >> - PowerPCCPU *cpu = POWERPC_CPU(cs); >> - PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cs); >> - CPUPPCState *env = &cpu->env; >> - int ret; >> - >> - if (pcc->handle_mmu_fault) { >> - ret = pcc->handle_mmu_fault(cpu, addr, access_type, mmu_idx); >> - } else { >> - ret = cpu_ppc_handle_mmu_fault(env, addr, access_type, mmu_idx); >> - } >> - if (unlikely(ret != 0)) { >> - if (probe) { >> - return false; >> - } >> - raise_exception_err_ra(env, cs->exception_index, env->error_code, >> - retaddr); >> - } >> - return true; >> -}
On Mon, Jun 07, 2021 at 03:35:06PM -0300, Lucas Mateus Martins Araujo e Castro wrote: > > On 06/06/2021 23:31, David Gibson wrote: > > On Wed, Jun 02, 2021 at 04:26:02PM -0300, Lucas Mateus Castro (alqotel) wrote: > > > Moved functions in mmu_helper.c that should be compiled in build to > > > mmu_common.c, moved declaration of functions that both files use to > > > cpu.h and moved struct declarations and inline functions needed by > > > both to target/ppc/internal.h. Updated meson.build to compile the > > > new file. > > > > > > Signed-off-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br> > > > --- > > > Had to turn a few functions non static as it was used by both > > > mmu_common.c and mmu_helper.c. Added the declaration of mmu_ctx_t to > > > cpu.h so functions there can reference it and added the definition to > > > internal.h so functions in both mmu_* files can access it. > > > And maybe the tlb functions should be declared in internal.h instead of > > > cpu.h. > > > --- > > > target/ppc/cpu.h | 35 + > > > target/ppc/internal.h | 26 + > > > target/ppc/meson.build | 6 +- > > > target/ppc/mmu_common.c | 1606 ++++++++++++++++++++++++++++++++++ > > > target/ppc/mmu_helper.c | 1814 +++------------------------------------ > > > 5 files changed, 1774 insertions(+), 1713 deletions(-) > > > create mode 100644 target/ppc/mmu_common.c > > > > > > diff --git a/target/ppc/cpu.h b/target/ppc/cpu.h > > > index b0934d9be4..cfc35ef83e 100644 > > > --- a/target/ppc/cpu.h > > > +++ b/target/ppc/cpu.h > > > @@ -1329,6 +1329,41 @@ void store_booke_tsr(CPUPPCState *env, target_ulong val); > > > void ppc_tlb_invalidate_all(CPUPPCState *env); > > > void ppc_tlb_invalidate_one(CPUPPCState *env, target_ulong addr); > > > void cpu_ppc_set_vhyp(PowerPCCPU *cpu, PPCVirtualHypervisor *vhyp); > > > + > > > +typedef struct mmu_ctx_t mmu_ctx_t; > > > +int ppcemb_tlb_check(CPUPPCState *env, ppcemb_tlb_t *tlb, > > > + hwaddr *raddrp, > > > + target_ulong address, uint32_t pid, int ext, > > > + int i); > > > +int get_physical_address_wtlb(CPUPPCState *env, mmu_ctx_t *ctx, > > > + target_ulong eaddr, > > > + MMUAccessType access_type, int type, > > > + int mmu_idx); > > > +hwaddr booke206_tlb_to_page_size(CPUPPCState *env, > > > + ppcmas_tlb_t *tlb); > > > +int ppcmas_tlb_check(CPUPPCState *env, ppcmas_tlb_t *tlb, > > > + hwaddr *raddrp, target_ulong address, > > > + uint32_t pid); > > > +int get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, > > > + target_ulong eaddr, MMUAccessType access_type, > > > + int type); > > > +static inline int ppc6xx_tlb_getnum(CPUPPCState *env, target_ulong eaddr, > > > + int way, int is_code) > > > +{ > > > + int nr; > > > + > > > + /* Select TLB num in a way from address */ > > > + nr = (eaddr >> TARGET_PAGE_BITS) & (env->tlb_per_way - 1); > > > + /* Select TLB way */ > > > + nr += env->tlb_per_way * way; > > > + /* 6xx have separate TLBs for instructions and data */ > > > + if (is_code && env->id_tlbs == 1) { > > > + nr += env->nb_tlb; > > > + } > > > + > > > + return nr; > > > +} > > This is a rather complex and model specific function to have inline in > > a header. > What is the best way to deal with this function? It's used by both > mmu_helper.c and mmu_common.c so I put it there as a way to keep it being an > inline function, so it would be best to put it in target/ppc/internal.h or > maybe just turn it into a not inline function? There's no good reason for this to be inline. Just put it in mmu_common.c and export.
diff --git a/target/ppc/cpu.h b/target/ppc/cpu.h index b0934d9be4..cfc35ef83e 100644 --- a/target/ppc/cpu.h +++ b/target/ppc/cpu.h @@ -1329,6 +1329,41 @@ void store_booke_tsr(CPUPPCState *env, target_ulong val); void ppc_tlb_invalidate_all(CPUPPCState *env); void ppc_tlb_invalidate_one(CPUPPCState *env, target_ulong addr); void cpu_ppc_set_vhyp(PowerPCCPU *cpu, PPCVirtualHypervisor *vhyp); + +typedef struct mmu_ctx_t mmu_ctx_t; +int ppcemb_tlb_check(CPUPPCState *env, ppcemb_tlb_t *tlb, + hwaddr *raddrp, + target_ulong address, uint32_t pid, int ext, + int i); +int get_physical_address_wtlb(CPUPPCState *env, mmu_ctx_t *ctx, + target_ulong eaddr, + MMUAccessType access_type, int type, + int mmu_idx); +hwaddr booke206_tlb_to_page_size(CPUPPCState *env, + ppcmas_tlb_t *tlb); +int ppcmas_tlb_check(CPUPPCState *env, ppcmas_tlb_t *tlb, + hwaddr *raddrp, target_ulong address, + uint32_t pid); +int get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, + target_ulong eaddr, MMUAccessType access_type, + int type); +static inline int ppc6xx_tlb_getnum(CPUPPCState *env, target_ulong eaddr, + int way, int is_code) +{ + int nr; + + /* Select TLB num in a way from address */ + nr = (eaddr >> TARGET_PAGE_BITS) & (env->tlb_per_way - 1); + /* Select TLB way */ + nr += env->tlb_per_way * way; + /* 6xx have separate TLBs for instructions and data */ + if (is_code && env->id_tlbs == 1) { + nr += env->nb_tlb; + } + + return nr; +} + #endif #endif diff --git a/target/ppc/internal.h b/target/ppc/internal.h index 2b4b06eb76..7d2913ec28 100644 --- a/target/ppc/internal.h +++ b/target/ppc/internal.h @@ -247,4 +247,30 @@ static inline int prot_for_access_type(MMUAccessType access_type) g_assert_not_reached(); } +/* Context used internally during MMU translations */ + +struct mmu_ctx_t { + hwaddr raddr; /* Real address */ + hwaddr eaddr; /* Effective address */ + int prot; /* Protection bits */ + hwaddr hash[2]; /* Pagetable hash values */ + target_ulong ptem; /* Virtual segment ID | API */ + int key; /* Access key */ + int nx; /* Non-execute area */ +}; + +/* Common routines used by software and hardware TLBs emulation */ +static inline int pte_is_valid(target_ulong pte0) +{ + return pte0 & 0x80000000 ? 1 : 0; +} + +static inline void pte_invalidate(target_ulong *pte0) +{ + *pte0 &= ~0x80000000; +} + +#define PTE_PTEM_MASK 0x7FFFFFBF +#define PTE_CHECK_MASK (TARGET_PAGE_MASK | 0x7B) + #endif /* PPC_INTERNAL_H */ diff --git a/target/ppc/meson.build b/target/ppc/meson.build index a6a53a8d5c..a54445d0da 100644 --- a/target/ppc/meson.build +++ b/target/ppc/meson.build @@ -28,10 +28,12 @@ ppc_softmmu_ss.add(files( 'arch_dump.c', 'machine.c', 'mmu-hash32.c', - 'mmu_helper.c', + 'mmu_common.c', 'monitor.c', )) -ppc_softmmu_ss.add(when: 'CONFIG_TCG', if_false: files( +ppc_softmmu_ss.add(when: 'CONFIG_TCG', if_true: files( + 'mmu_helper.c', +), if_false: files( 'tcg-stub.c' )) diff --git a/target/ppc/mmu_common.c b/target/ppc/mmu_common.c new file mode 100644 index 0000000000..d95399d67f --- /dev/null +++ b/target/ppc/mmu_common.c @@ -0,0 +1,1606 @@ +/* + * PowerPC CPU initialization for qemu. + * + * Copyright (C) 2021 Instituto de Pesquisas Eldorado (eldorado.org.br) + * + * 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 2.1 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 "qemu/osdep.h" +#include "qemu/units.h" +#include "cpu.h" +#include "sysemu/kvm.h" +#include "kvm_ppc.h" +#include "mmu-hash64.h" +#include "mmu-hash32.h" +#include "exec/exec-all.h" +#include "exec/log.h" +#include "helper_regs.h" +#include "qemu/error-report.h" +#include "qemu/main-loop.h" +#include "qemu/qemu-print.h" +#include "internal.h" +#include "mmu-book3s-v3.h" +#include "mmu-radix64.h" + +/* #define DEBUG_MMU */ +/* #define DEBUG_BATS */ +/* #define DEBUG_SOFTWARE_TLB */ +/* #define DUMP_PAGE_TABLES */ +/* #define FLUSH_ALL_TLBS */ + +#ifdef DEBUG_MMU +# define LOG_MMU_STATE(cpu) log_cpu_state_mask(CPU_LOG_MMU, (cpu), 0) +#else +# define LOG_MMU_STATE(cpu) do { } while (0) +#endif + +#ifdef DEBUG_SOFTWARE_TLB +# define LOG_SWTLB(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__) +#else +# define LOG_SWTLB(...) do { } while (0) +#endif + +#ifdef DEBUG_BATS +# define LOG_BATS(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__) +#else +# define LOG_BATS(...) do { } while (0) +#endif + +/*****************************************************************************/ +/* PowerPC MMU emulation */ + +static int pp_check(int key, int pp, int nx) +{ + int access; + + /* Compute access rights */ + access = 0; + if (key == 0) { + switch (pp) { + case 0x0: + case 0x1: + case 0x2: + access |= PAGE_WRITE; + /* fall through */ + case 0x3: + access |= PAGE_READ; + break; + } + } else { + switch (pp) { + case 0x0: + access = 0; + break; + case 0x1: + case 0x3: + access = PAGE_READ; + break; + case 0x2: + access = PAGE_READ | PAGE_WRITE; + break; + } + } + if (nx == 0) { + access |= PAGE_EXEC; + } + + return access; +} + +static int check_prot(int prot, MMUAccessType access_type) +{ + return prot & prot_for_access_type(access_type) ? 0 : -2; +} + +static int pte_update_flags(mmu_ctx_t *ctx, target_ulong *pte1p, + int ret, MMUAccessType access_type) +{ + int store = 0; + + /* Update page flags */ + if (!(*pte1p & 0x00000100)) { + /* Update accessed flag */ + *pte1p |= 0x00000100; + store = 1; + } + if (!(*pte1p & 0x00000080)) { + if (access_type == MMU_DATA_STORE && ret == 0) { + /* Update changed flag */ + *pte1p |= 0x00000080; + store = 1; + } else { + /* Force page fault for first write access */ + ctx->prot &= ~PAGE_WRITE; + } + } + + return store; +} + +static int ppc6xx_tlb_pte_check(mmu_ctx_t *ctx, target_ulong pte0, + target_ulong pte1, int h, + MMUAccessType access_type) +{ + target_ulong ptem, mmask; + int access, ret, pteh, ptev, pp; + + ret = -1; + /* Check validity and table match */ + ptev = pte_is_valid(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_mask(CPU_LOG_MMU, "Bad RPN/WIMG/PP\n"); + return -3; + } + } + /* Compute access rights */ + access = pp_check(ctx->key, pp, ctx->nx); + /* Keep the matching PTE information */ + ctx->raddr = pte1; + ctx->prot = access; + ret = check_prot(ctx->prot, access_type); + if (ret == 0) { + /* Access granted */ + qemu_log_mask(CPU_LOG_MMU, "PTE access granted !\n"); + } else { + /* Access right violation */ + qemu_log_mask(CPU_LOG_MMU, "PTE access rejected\n"); + } + } + } + + return ret; +} + +static int ppc6xx_tlb_check(CPUPPCState *env, mmu_ctx_t *ctx, + target_ulong eaddr, MMUAccessType access_type) +{ + ppc6xx_tlb_t *tlb; + int nr, best, way; + int ret; + + best = -1; + ret = -1; /* No TLB found */ + for (way = 0; way < env->nb_ways; way++) { + nr = ppc6xx_tlb_getnum(env, eaddr, way, access_type == MMU_INST_FETCH); + tlb = &env->tlb.tlb6[nr]; + /* This test "emulates" the PTE index match for hardware TLBs */ + if ((eaddr & TARGET_PAGE_MASK) != tlb->EPN) { + LOG_SWTLB("TLB %d/%d %s [" TARGET_FMT_lx " " TARGET_FMT_lx + "] <> " TARGET_FMT_lx "\n", nr, env->nb_tlb, + pte_is_valid(tlb->pte0) ? "valid" : "inval", + tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE, eaddr); + continue; + } + LOG_SWTLB("TLB %d/%d %s " TARGET_FMT_lx " <> " TARGET_FMT_lx " " + TARGET_FMT_lx " %c %c\n", nr, env->nb_tlb, + pte_is_valid(tlb->pte0) ? "valid" : "inval", + tlb->EPN, eaddr, tlb->pte1, + access_type == MMU_DATA_STORE ? 'S' : 'L', + access_type == MMU_INST_FETCH ? 'I' : 'D'); + switch (ppc6xx_tlb_pte_check(ctx, tlb->pte0, tlb->pte1, + 0, access_type)) { + case -3: + /* TLB inconsistency */ + return -1; + case -2: + /* Access violation */ + ret = -2; + best = nr; + break; + case -1: + default: + /* No match */ + break; + case 0: + /* access granted */ + /* + * XXX: we should go on looping to check all TLBs + * consistency but we can speed-up the whole thing as + * the result would be undefined if TLBs are not + * consistent. + */ + ret = 0; + best = nr; + goto done; + } + } + if (best != -1) { + done: + LOG_SWTLB("found TLB at addr " TARGET_FMT_plx " prot=%01x ret=%d\n", + ctx->raddr & TARGET_PAGE_MASK, ctx->prot, ret); + /* Update page flags */ + pte_update_flags(ctx, &env->tlb.tlb6[best].pte1, ret, access_type); + } + + return ret; +} + +/* Perform BAT hit & translation */ +static inline void bat_size_prot(CPUPPCState *env, target_ulong *blp, + int *validp, int *protp, target_ulong *BATu, + target_ulong *BATl) +{ + target_ulong bl; + int pp, valid, prot; + + bl = (*BATu & 0x00001FFC) << 15; + valid = 0; + prot = 0; + if (((msr_pr == 0) && (*BATu & 0x00000002)) || + ((msr_pr != 0) && (*BATu & 0x00000001))) { + valid = 1; + pp = *BATl & 0x00000003; + if (pp != 0) { + prot = PAGE_READ | PAGE_EXEC; + if (pp == 0x2) { + prot |= PAGE_WRITE; + } + } + } + *blp = bl; + *validp = valid; + *protp = prot; +} + +static int get_bat_6xx_tlb(CPUPPCState *env, mmu_ctx_t *ctx, + target_ulong virtual, MMUAccessType access_type) +{ + target_ulong *BATlt, *BATut, *BATu, *BATl; + target_ulong BEPIl, BEPIu, bl; + int i, valid, prot; + int ret = -1; + bool ifetch = access_type == MMU_INST_FETCH; + + LOG_BATS("%s: %cBAT v " TARGET_FMT_lx "\n", __func__, + ifetch ? 'I' : 'D', virtual); + if (ifetch) { + BATlt = env->IBAT[1]; + BATut = env->IBAT[0]; + } else { + BATlt = env->DBAT[1]; + BATut = env->DBAT[0]; + } + for (i = 0; i < env->nb_BATs; i++) { + BATu = &BATut[i]; + BATl = &BATlt[i]; + BEPIu = *BATu & 0xF0000000; + BEPIl = *BATu & 0x0FFE0000; + bat_size_prot(env, &bl, &valid, &prot, BATu, BATl); + LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx + " BATl " TARGET_FMT_lx "\n", __func__, + ifetch ? 'I' : 'D', i, virtual, *BATu, *BATl); + if ((virtual & 0xF0000000) == BEPIu && + ((virtual & 0x0FFE0000) & ~bl) == BEPIl) { + /* BAT matches */ + if (valid != 0) { + /* Get physical address */ + ctx->raddr = (*BATl & 0xF0000000) | + ((virtual & 0x0FFE0000 & bl) | (*BATl & 0x0FFE0000)) | + (virtual & 0x0001F000); + /* Compute access rights */ + ctx->prot = prot; + ret = check_prot(ctx->prot, access_type); + if (ret == 0) { + LOG_BATS("BAT %d match: r " TARGET_FMT_plx " prot=%c%c\n", + i, ctx->raddr, ctx->prot & PAGE_READ ? 'R' : '-', + ctx->prot & PAGE_WRITE ? 'W' : '-'); + } + break; + } + } + } + if (ret < 0) { +#if defined(DEBUG_BATS) + if (qemu_log_enabled()) { + LOG_BATS("no BAT match for " TARGET_FMT_lx ":\n", virtual); + for (i = 0; i < 4; i++) { + BATu = &BATut[i]; + BATl = &BATlt[i]; + BEPIu = *BATu & 0xF0000000; + BEPIl = *BATu & 0x0FFE0000; + bl = (*BATu & 0x00001FFC) << 15; + LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx + " BATl " TARGET_FMT_lx "\n\t" TARGET_FMT_lx " " + TARGET_FMT_lx " " TARGET_FMT_lx "\n", + __func__, ifetch ? 'I' : 'D', i, virtual, + *BATu, *BATl, BEPIu, BEPIl, bl); + } + } +#endif + } + /* No hit */ + return ret; +} + +/* Perform segment based translation */ +static int get_segment_6xx_tlb(CPUPPCState *env, mmu_ctx_t *ctx, + target_ulong eaddr, MMUAccessType access_type, + int type) +{ + PowerPCCPU *cpu = env_archcpu(env); + hwaddr hash; + target_ulong vsid; + int ds, pr, target_page_bits; + int ret; + target_ulong sr, pgidx; + + pr = msr_pr; + ctx->eaddr = eaddr; + + sr = env->sr[eaddr >> 28]; + ctx->key = (((sr & 0x20000000) && (pr != 0)) || + ((sr & 0x40000000) && (pr == 0))) ? 1 : 0; + ds = sr & 0x80000000 ? 1 : 0; + ctx->nx = sr & 0x10000000 ? 1 : 0; + vsid = sr & 0x00FFFFFF; + target_page_bits = TARGET_PAGE_BITS; + qemu_log_mask(CPU_LOG_MMU, + "Check segment v=" TARGET_FMT_lx " %d " TARGET_FMT_lx + " nip=" TARGET_FMT_lx " lr=" TARGET_FMT_lx + " ir=%d dr=%d pr=%d %d t=%d\n", + eaddr, (int)(eaddr >> 28), sr, env->nip, env->lr, (int)msr_ir, + (int)msr_dr, pr != 0 ? 1 : 0, access_type == MMU_DATA_STORE, type); + pgidx = (eaddr & ~SEGMENT_MASK_256M) >> target_page_bits; + hash = vsid ^ pgidx; + ctx->ptem = (vsid << 7) | (pgidx >> 10); + + qemu_log_mask(CPU_LOG_MMU, + "pte segment: key=%d ds %d nx %d vsid " TARGET_FMT_lx "\n", + ctx->key, ds, ctx->nx, vsid); + ret = -1; + if (!ds) { + /* Check if instruction fetch is allowed, if needed */ + if (type != ACCESS_CODE || ctx->nx == 0) { + /* Page address translation */ + qemu_log_mask(CPU_LOG_MMU, "htab_base " TARGET_FMT_plx + " htab_mask " TARGET_FMT_plx + " hash " TARGET_FMT_plx "\n", + ppc_hash32_hpt_base(cpu), ppc_hash32_hpt_mask(cpu), hash); + ctx->hash[0] = hash; + ctx->hash[1] = ~hash; + + /* Initialize real address with an invalid value */ + ctx->raddr = (hwaddr)-1ULL; + /* Software TLB search */ + ret = ppc6xx_tlb_check(env, ctx, eaddr, access_type); +#if defined(DUMP_PAGE_TABLES) + if (qemu_loglevel_mask(CPU_LOG_MMU)) { + CPUState *cs = env_cpu(env); + hwaddr curaddr; + uint32_t a0, a1, a2, a3; + + qemu_log("Page table: " TARGET_FMT_plx " len " TARGET_FMT_plx + "\n", ppc_hash32_hpt_base(cpu), + ppc_hash32_hpt_mask(env) + 0x80); + for (curaddr = ppc_hash32_hpt_base(cpu); + curaddr < (ppc_hash32_hpt_base(cpu) + + ppc_hash32_hpt_mask(cpu) + 0x80); + curaddr += 16) { + a0 = ldl_phys(cs->as, curaddr); + a1 = ldl_phys(cs->as, curaddr + 4); + a2 = ldl_phys(cs->as, curaddr + 8); + a3 = ldl_phys(cs->as, curaddr + 12); + if (a0 != 0 || a1 != 0 || a2 != 0 || a3 != 0) { + qemu_log(TARGET_FMT_plx ": %08x %08x %08x %08x\n", + curaddr, a0, a1, a2, a3); + } + } + } +#endif + } else { + qemu_log_mask(CPU_LOG_MMU, "No access allowed\n"); + ret = -3; + } + } else { + target_ulong sr; + + qemu_log_mask(CPU_LOG_MMU, "direct store...\n"); + /* Direct-store segment : absolutely *BUGGY* for now */ + + /* + * Direct-store implies a 32-bit MMU. + * Check the Segment Register's bus unit ID (BUID). + */ + sr = env->sr[eaddr >> 28]; + if ((sr & 0x1FF00000) >> 20 == 0x07f) { + /* + * Memory-forced I/O controller interface access + * + * If T=1 and BUID=x'07F', the 601 performs a memory + * access to SR[28-31] LA[4-31], bypassing all protection + * mechanisms. + */ + ctx->raddr = ((sr & 0xF) << 28) | (eaddr & 0x0FFFFFFF); + ctx->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; + return 0; + } + + switch (type) { + case ACCESS_INT: + /* Integer load/store : only access allowed */ + break; + case ACCESS_CODE: + /* No code fetch is allowed in direct-store areas */ + return -4; + case ACCESS_FLOAT: + /* Floating point load/store */ + return -4; + case ACCESS_RES: + /* lwarx, ldarx or srwcx. */ + return -4; + case ACCESS_CACHE: + /* + * dcba, dcbt, dcbtst, dcbf, dcbi, dcbst, dcbz, or icbi + * + * Should make the instruction do no-op. As it already do + * no-op, it's quite easy :-) + */ + ctx->raddr = eaddr; + return 0; + case ACCESS_EXT: + /* eciwx or ecowx */ + return -4; + default: + qemu_log_mask(CPU_LOG_MMU, "ERROR: instruction should not need " + "address translation\n"); + return -4; + } + if ((access_type == MMU_DATA_STORE || ctx->key != 1) && + (access_type == MMU_DATA_LOAD || ctx->key != 0)) { + ctx->raddr = eaddr; + ret = 2; + } else { + ret = -2; + } + } + + return ret; +} + +/* Generic TLB check function for embedded PowerPC implementations */ +int ppcemb_tlb_check(CPUPPCState *env, ppcemb_tlb_t *tlb, + hwaddr *raddrp, + target_ulong address, uint32_t pid, int ext, + int i) +{ + target_ulong mask; + + /* Check valid flag */ + if (!(tlb->prot & PAGE_VALID)) { + return -1; + } + mask = ~(tlb->size - 1); + LOG_SWTLB("%s: TLB %d address " TARGET_FMT_lx " PID %u <=> " TARGET_FMT_lx + " " TARGET_FMT_lx " %u %x\n", __func__, i, address, pid, tlb->EPN, + mask, (uint32_t)tlb->PID, tlb->prot); + /* Check PID */ + if (tlb->PID != 0 && tlb->PID != pid) { + return -1; + } + /* Check effective address */ + if ((address & mask) != tlb->EPN) { + return -1; + } + *raddrp = (tlb->RPN & mask) | (address & ~mask); + if (ext) { + /* Extend the physical address to 36 bits */ + *raddrp |= (uint64_t)(tlb->RPN & 0xF) << 32; + } + + return 0; +} + +static int mmu40x_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, + target_ulong address, + MMUAccessType access_type) +{ + ppcemb_tlb_t *tlb; + hwaddr raddr; + int i, ret, zsel, zpr, pr; + + ret = -1; + raddr = (hwaddr)-1ULL; + pr = msr_pr; + for (i = 0; i < env->nb_tlb; i++) { + tlb = &env->tlb.tlbe[i]; + if (ppcemb_tlb_check(env, tlb, &raddr, address, + env->spr[SPR_40x_PID], 0, i) < 0) { + continue; + } + zsel = (tlb->attr >> 4) & 0xF; + zpr = (env->spr[SPR_40x_ZPR] >> (30 - (2 * zsel))) & 0x3; + LOG_SWTLB("%s: TLB %d zsel %d zpr %d ty %d attr %08x\n", + __func__, i, zsel, zpr, access_type, tlb->attr); + /* Check execute enable bit */ + switch (zpr) { + case 0x2: + if (pr != 0) { + goto check_perms; + } + /* fall through */ + case 0x3: + /* All accesses granted */ + ctx->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; + ret = 0; + break; + case 0x0: + if (pr != 0) { + /* Raise Zone protection fault. */ + env->spr[SPR_40x_ESR] = 1 << 22; + ctx->prot = 0; + ret = -2; + break; + } + /* fall through */ + case 0x1: + check_perms: + /* Check from TLB entry */ + ctx->prot = tlb->prot; + ret = check_prot(ctx->prot, access_type); + if (ret == -2) { + env->spr[SPR_40x_ESR] = 0; + } + break; + } + if (ret >= 0) { + ctx->raddr = raddr; + LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx + " %d %d\n", __func__, address, ctx->raddr, ctx->prot, + ret); + return 0; + } + } + LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx + " %d %d\n", __func__, address, raddr, ctx->prot, ret); + + return ret; +} + +void store_40x_sler(CPUPPCState *env, uint32_t val) +{ + /* XXX: TO BE FIXED */ + if (val != 0x00000000) { + cpu_abort(env_cpu(env), + "Little-endian regions are not supported by now\n"); + } + env->spr[SPR_405_SLER] = val; +} + +static int mmubooke_check_tlb(CPUPPCState *env, ppcemb_tlb_t *tlb, + hwaddr *raddr, int *prot, target_ulong address, + MMUAccessType access_type, int i) +{ + int prot2; + + if (ppcemb_tlb_check(env, tlb, raddr, address, + env->spr[SPR_BOOKE_PID], + !env->nb_pids, i) >= 0) { + goto found_tlb; + } + + if (env->spr[SPR_BOOKE_PID1] && + ppcemb_tlb_check(env, tlb, raddr, address, + env->spr[SPR_BOOKE_PID1], 0, i) >= 0) { + goto found_tlb; + } + + if (env->spr[SPR_BOOKE_PID2] && + ppcemb_tlb_check(env, tlb, raddr, address, + env->spr[SPR_BOOKE_PID2], 0, i) >= 0) { + goto found_tlb; + } + + LOG_SWTLB("%s: TLB entry not found\n", __func__); + return -1; + +found_tlb: + + if (msr_pr != 0) { + prot2 = tlb->prot & 0xF; + } else { + prot2 = (tlb->prot >> 4) & 0xF; + } + + /* Check the address space */ + if ((access_type == MMU_INST_FETCH ? msr_ir : msr_dr) != (tlb->attr & 1)) { + LOG_SWTLB("%s: AS doesn't match\n", __func__); + return -1; + } + + *prot = prot2; + if (prot2 & prot_for_access_type(access_type)) { + LOG_SWTLB("%s: good TLB!\n", __func__); + return 0; + } + + LOG_SWTLB("%s: no prot match: %x\n", __func__, prot2); + return access_type == MMU_INST_FETCH ? -3 : -2; +} + +static int mmubooke_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, + target_ulong address, + MMUAccessType access_type) +{ + ppcemb_tlb_t *tlb; + hwaddr raddr; + int i, ret; + + ret = -1; + raddr = (hwaddr)-1ULL; + for (i = 0; i < env->nb_tlb; i++) { + tlb = &env->tlb.tlbe[i]; + ret = mmubooke_check_tlb(env, tlb, &raddr, &ctx->prot, address, + access_type, i); + if (ret != -1) { + break; + } + } + + if (ret >= 0) { + ctx->raddr = raddr; + LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx + " %d %d\n", __func__, address, ctx->raddr, ctx->prot, + ret); + } else { + LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx + " %d %d\n", __func__, address, raddr, ctx->prot, ret); + } + + return ret; +} + +hwaddr booke206_tlb_to_page_size(CPUPPCState *env, + ppcmas_tlb_t *tlb) +{ + int tlbm_size; + + tlbm_size = (tlb->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT; + + return 1024ULL << tlbm_size; +} + +/* TLB check function for MAS based SoftTLBs */ +int ppcmas_tlb_check(CPUPPCState *env, ppcmas_tlb_t *tlb, + hwaddr *raddrp, target_ulong address, + uint32_t pid) +{ + hwaddr mask; + uint32_t tlb_pid; + + if (!msr_cm) { + /* In 32bit mode we can only address 32bit EAs */ + address = (uint32_t)address; + } + + /* Check valid flag */ + if (!(tlb->mas1 & MAS1_VALID)) { + return -1; + } + + mask = ~(booke206_tlb_to_page_size(env, tlb) - 1); + LOG_SWTLB("%s: TLB ADDR=0x" TARGET_FMT_lx " PID=0x%x MAS1=0x%x MAS2=0x%" + PRIx64 " mask=0x%" HWADDR_PRIx " MAS7_3=0x%" PRIx64 " MAS8=0x%" + PRIx32 "\n", __func__, address, pid, tlb->mas1, tlb->mas2, mask, + tlb->mas7_3, tlb->mas8); + + /* Check PID */ + tlb_pid = (tlb->mas1 & MAS1_TID_MASK) >> MAS1_TID_SHIFT; + if (tlb_pid != 0 && tlb_pid != pid) { + return -1; + } + + /* Check effective address */ + if ((address & mask) != (tlb->mas2 & MAS2_EPN_MASK)) { + return -1; + } + + if (raddrp) { + *raddrp = (tlb->mas7_3 & mask) | (address & ~mask); + } + + return 0; +} + +static bool is_epid_mmu(int mmu_idx) +{ + return mmu_idx == PPC_TLB_EPID_STORE || mmu_idx == PPC_TLB_EPID_LOAD; +} + +static uint32_t mmubooke206_esr(int mmu_idx, MMUAccessType access_type) +{ + uint32_t esr = 0; + if (access_type == MMU_DATA_STORE) { + esr |= ESR_ST; + } + if (is_epid_mmu(mmu_idx)) { + esr |= ESR_EPID; + } + return esr; +} + +/* + * Get EPID register given the mmu_idx. If this is regular load, + * construct the EPID access bits from current processor state + * + * Get the effective AS and PR bits and the PID. The PID is returned + * only if EPID load is requested, otherwise the caller must detect + * the correct EPID. Return true if valid EPID is returned. + */ +static bool mmubooke206_get_as(CPUPPCState *env, + int mmu_idx, uint32_t *epid_out, + bool *as_out, bool *pr_out) +{ + if (is_epid_mmu(mmu_idx)) { + uint32_t epidr; + if (mmu_idx == PPC_TLB_EPID_STORE) { + epidr = env->spr[SPR_BOOKE_EPSC]; + } else { + epidr = env->spr[SPR_BOOKE_EPLC]; + } + *epid_out = (epidr & EPID_EPID) >> EPID_EPID_SHIFT; + *as_out = !!(epidr & EPID_EAS); + *pr_out = !!(epidr & EPID_EPR); + return true; + } else { + *as_out = msr_ds; + *pr_out = msr_pr; + return false; + } +} + +/* Check if the tlb found by hashing really matches */ +static int mmubooke206_check_tlb(CPUPPCState *env, ppcmas_tlb_t *tlb, + hwaddr *raddr, int *prot, + target_ulong address, + MMUAccessType access_type, int mmu_idx) +{ + int prot2 = 0; + uint32_t epid; + bool as, pr; + bool use_epid = mmubooke206_get_as(env, mmu_idx, &epid, &as, &pr); + + if (!use_epid) { + if (ppcmas_tlb_check(env, tlb, raddr, address, + env->spr[SPR_BOOKE_PID]) >= 0) { + goto found_tlb; + } + + if (env->spr[SPR_BOOKE_PID1] && + ppcmas_tlb_check(env, tlb, raddr, address, + env->spr[SPR_BOOKE_PID1]) >= 0) { + goto found_tlb; + } + + if (env->spr[SPR_BOOKE_PID2] && + ppcmas_tlb_check(env, tlb, raddr, address, + env->spr[SPR_BOOKE_PID2]) >= 0) { + goto found_tlb; + } + } else { + if (ppcmas_tlb_check(env, tlb, raddr, address, epid) >= 0) { + goto found_tlb; + } + } + + LOG_SWTLB("%s: TLB entry not found\n", __func__); + return -1; + +found_tlb: + + if (pr) { + if (tlb->mas7_3 & MAS3_UR) { + prot2 |= PAGE_READ; + } + if (tlb->mas7_3 & MAS3_UW) { + prot2 |= PAGE_WRITE; + } + if (tlb->mas7_3 & MAS3_UX) { + prot2 |= PAGE_EXEC; + } + } else { + if (tlb->mas7_3 & MAS3_SR) { + prot2 |= PAGE_READ; + } + if (tlb->mas7_3 & MAS3_SW) { + prot2 |= PAGE_WRITE; + } + if (tlb->mas7_3 & MAS3_SX) { + prot2 |= PAGE_EXEC; + } + } + + /* Check the address space and permissions */ + if (access_type == MMU_INST_FETCH) { + /* There is no way to fetch code using epid load */ + assert(!use_epid); + as = msr_ir; + } + + if (as != ((tlb->mas1 & MAS1_TS) >> MAS1_TS_SHIFT)) { + LOG_SWTLB("%s: AS doesn't match\n", __func__); + return -1; + } + + *prot = prot2; + if (prot2 & prot_for_access_type(access_type)) { + LOG_SWTLB("%s: good TLB!\n", __func__); + return 0; + } + + LOG_SWTLB("%s: no prot match: %x\n", __func__, prot2); + return access_type == MMU_INST_FETCH ? -3 : -2; +} + +static int mmubooke206_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, + target_ulong address, + MMUAccessType access_type, + int mmu_idx) +{ + ppcmas_tlb_t *tlb; + hwaddr raddr; + int i, j, ret; + + ret = -1; + raddr = (hwaddr)-1ULL; + + for (i = 0; i < BOOKE206_MAX_TLBN; i++) { + int ways = booke206_tlb_ways(env, i); + + for (j = 0; j < ways; j++) { + tlb = booke206_get_tlbm(env, i, address, j); + if (!tlb) { + continue; + } + ret = mmubooke206_check_tlb(env, tlb, &raddr, &ctx->prot, address, + access_type, mmu_idx); + if (ret != -1) { + goto found_tlb; + } + } + } + +found_tlb: + + if (ret >= 0) { + ctx->raddr = raddr; + LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx + " %d %d\n", __func__, address, ctx->raddr, ctx->prot, + ret); + } else { + LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx + " %d %d\n", __func__, address, raddr, ctx->prot, ret); + } + + return ret; +} + +static const char *book3e_tsize_to_str[32] = { + "1K", "2K", "4K", "8K", "16K", "32K", "64K", "128K", "256K", "512K", + "1M", "2M", "4M", "8M", "16M", "32M", "64M", "128M", "256M", "512M", + "1G", "2G", "4G", "8G", "16G", "32G", "64G", "128G", "256G", "512G", + "1T", "2T" +}; + +static void mmubooke_dump_mmu(CPUPPCState *env) +{ + ppcemb_tlb_t *entry; + int i; + + if (kvm_enabled() && !env->kvm_sw_tlb) { + qemu_printf("Cannot access KVM TLB\n"); + return; + } + + qemu_printf("\nTLB:\n"); + qemu_printf("Effective Physical Size PID Prot " + "Attr\n"); + + entry = &env->tlb.tlbe[0]; + for (i = 0; i < env->nb_tlb; i++, entry++) { + hwaddr ea, pa; + target_ulong mask; + uint64_t size = (uint64_t)entry->size; + char size_buf[20]; + + /* Check valid flag */ + if (!(entry->prot & PAGE_VALID)) { + continue; + } + + mask = ~(entry->size - 1); + ea = entry->EPN & mask; + pa = entry->RPN & mask; + /* Extend the physical address to 36 bits */ + pa |= (hwaddr)(entry->RPN & 0xF) << 32; + if (size >= 1 * MiB) { + snprintf(size_buf, sizeof(size_buf), "%3" PRId64 "M", size / MiB); + } else { + snprintf(size_buf, sizeof(size_buf), "%3" PRId64 "k", size / KiB); + } + qemu_printf("0x%016" PRIx64 " 0x%016" PRIx64 " %s %-5u %08x %08x\n", + (uint64_t)ea, (uint64_t)pa, size_buf, (uint32_t)entry->PID, + entry->prot, entry->attr); + } + +} + +static void mmubooke206_dump_one_tlb(CPUPPCState *env, int tlbn, int offset, + int tlbsize) +{ + ppcmas_tlb_t *entry; + int i; + + qemu_printf("\nTLB%d:\n", tlbn); + qemu_printf("Effective Physical Size TID TS SRWX" + " URWX WIMGE U0123\n"); + + entry = &env->tlb.tlbm[offset]; + for (i = 0; i < tlbsize; i++, entry++) { + hwaddr ea, pa, size; + int tsize; + + if (!(entry->mas1 & MAS1_VALID)) { + continue; + } + + tsize = (entry->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT; + size = 1024ULL << tsize; + ea = entry->mas2 & ~(size - 1); + pa = entry->mas7_3 & ~(size - 1); + + qemu_printf("0x%016" PRIx64 " 0x%016" PRIx64 " %4s %-5u %1u S%c%c%c" + "U%c%c%c %c%c%c%c%c U%c%c%c%c\n", + (uint64_t)ea, (uint64_t)pa, + book3e_tsize_to_str[tsize], + (entry->mas1 & MAS1_TID_MASK) >> MAS1_TID_SHIFT, + (entry->mas1 & MAS1_TS) >> MAS1_TS_SHIFT, + entry->mas7_3 & MAS3_SR ? 'R' : '-', + entry->mas7_3 & MAS3_SW ? 'W' : '-', + entry->mas7_3 & MAS3_SX ? 'X' : '-', + entry->mas7_3 & MAS3_UR ? 'R' : '-', + entry->mas7_3 & MAS3_UW ? 'W' : '-', + entry->mas7_3 & MAS3_UX ? 'X' : '-', + entry->mas2 & MAS2_W ? 'W' : '-', + entry->mas2 & MAS2_I ? 'I' : '-', + entry->mas2 & MAS2_M ? 'M' : '-', + entry->mas2 & MAS2_G ? 'G' : '-', + entry->mas2 & MAS2_E ? 'E' : '-', + entry->mas7_3 & MAS3_U0 ? '0' : '-', + entry->mas7_3 & MAS3_U1 ? '1' : '-', + entry->mas7_3 & MAS3_U2 ? '2' : '-', + entry->mas7_3 & MAS3_U3 ? '3' : '-'); + } +} + +static void mmubooke206_dump_mmu(CPUPPCState *env) +{ + int offset = 0; + int i; + + if (kvm_enabled() && !env->kvm_sw_tlb) { + qemu_printf("Cannot access KVM TLB\n"); + return; + } + + for (i = 0; i < BOOKE206_MAX_TLBN; i++) { + int size = booke206_tlb_size(env, i); + + if (size == 0) { + continue; + } + + mmubooke206_dump_one_tlb(env, i, offset, size); + offset += size; + } +} + +static void mmu6xx_dump_BATs(CPUPPCState *env, int type) +{ + target_ulong *BATlt, *BATut, *BATu, *BATl; + target_ulong BEPIl, BEPIu, bl; + int i; + + switch (type) { + case ACCESS_CODE: + BATlt = env->IBAT[1]; + BATut = env->IBAT[0]; + break; + default: + BATlt = env->DBAT[1]; + BATut = env->DBAT[0]; + break; + } + + for (i = 0; i < env->nb_BATs; i++) { + BATu = &BATut[i]; + BATl = &BATlt[i]; + BEPIu = *BATu & 0xF0000000; + BEPIl = *BATu & 0x0FFE0000; + bl = (*BATu & 0x00001FFC) << 15; + qemu_printf("%s BAT%d BATu " TARGET_FMT_lx + " BATl " TARGET_FMT_lx "\n\t" TARGET_FMT_lx " " + TARGET_FMT_lx " " TARGET_FMT_lx "\n", + type == ACCESS_CODE ? "code" : "data", i, + *BATu, *BATl, BEPIu, BEPIl, bl); + } +} + +static void mmu6xx_dump_mmu(CPUPPCState *env) +{ + PowerPCCPU *cpu = env_archcpu(env); + ppc6xx_tlb_t *tlb; + target_ulong sr; + int type, way, entry, i; + + qemu_printf("HTAB base = 0x%"HWADDR_PRIx"\n", ppc_hash32_hpt_base(cpu)); + qemu_printf("HTAB mask = 0x%"HWADDR_PRIx"\n", ppc_hash32_hpt_mask(cpu)); + + qemu_printf("\nSegment registers:\n"); + for (i = 0; i < 32; i++) { + sr = env->sr[i]; + if (sr & 0x80000000) { + qemu_printf("%02d T=%d Ks=%d Kp=%d BUID=0x%03x " + "CNTLR_SPEC=0x%05x\n", i, + sr & 0x80000000 ? 1 : 0, sr & 0x40000000 ? 1 : 0, + sr & 0x20000000 ? 1 : 0, (uint32_t)((sr >> 20) & 0x1FF), + (uint32_t)(sr & 0xFFFFF)); + } else { + qemu_printf("%02d T=%d Ks=%d Kp=%d N=%d VSID=0x%06x\n", i, + sr & 0x80000000 ? 1 : 0, sr & 0x40000000 ? 1 : 0, + sr & 0x20000000 ? 1 : 0, sr & 0x10000000 ? 1 : 0, + (uint32_t)(sr & 0x00FFFFFF)); + } + } + + qemu_printf("\nBATs:\n"); + mmu6xx_dump_BATs(env, ACCESS_INT); + mmu6xx_dump_BATs(env, ACCESS_CODE); + + if (env->id_tlbs != 1) { + qemu_printf("ERROR: 6xx MMU should have separated TLB" + " for code and data\n"); + } + + qemu_printf("\nTLBs [EPN EPN + SIZE]\n"); + + for (type = 0; type < 2; type++) { + for (way = 0; way < env->nb_ways; way++) { + for (entry = env->nb_tlb * type + env->tlb_per_way * way; + entry < (env->nb_tlb * type + env->tlb_per_way * (way + 1)); + entry++) { + + tlb = &env->tlb.tlb6[entry]; + qemu_printf("%s TLB %02d/%02d way:%d %s [" + TARGET_FMT_lx " " TARGET_FMT_lx "]\n", + type ? "code" : "data", entry % env->nb_tlb, + env->nb_tlb, way, + pte_is_valid(tlb->pte0) ? "valid" : "inval", + tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE); + } + } + } +} + +void dump_mmu(CPUPPCState *env) +{ + switch (env->mmu_model) { + case POWERPC_MMU_BOOKE: + mmubooke_dump_mmu(env); + break; + case POWERPC_MMU_BOOKE206: + mmubooke206_dump_mmu(env); + break; + case POWERPC_MMU_SOFT_6xx: + case POWERPC_MMU_SOFT_74xx: + mmu6xx_dump_mmu(env); + break; +#if defined(TARGET_PPC64) + case POWERPC_MMU_64B: + case POWERPC_MMU_2_03: + case POWERPC_MMU_2_06: + case POWERPC_MMU_2_07: + dump_slb(env_archcpu(env)); + break; + case POWERPC_MMU_3_00: + if (ppc64_v3_radix(env_archcpu(env))) { + qemu_log_mask(LOG_UNIMP, "%s: the PPC64 MMU is unsupported\n", + __func__); + } else { + dump_slb(env_archcpu(env)); + } + break; +#endif + default: + qemu_log_mask(LOG_UNIMP, "%s: unimplemented\n", __func__); + } +} + +static int check_physical(CPUPPCState *env, mmu_ctx_t *ctx, target_ulong eaddr, + MMUAccessType access_type) +{ + int in_plb, ret; + + ctx->raddr = eaddr; + ctx->prot = PAGE_READ | PAGE_EXEC; + ret = 0; + switch (env->mmu_model) { + case POWERPC_MMU_SOFT_6xx: + case POWERPC_MMU_SOFT_74xx: + case POWERPC_MMU_SOFT_4xx: + case POWERPC_MMU_REAL: + case POWERPC_MMU_BOOKE: + ctx->prot |= PAGE_WRITE; + break; + + case POWERPC_MMU_SOFT_4xx_Z: + if (unlikely(msr_pe != 0)) { + /* + * 403 family add some particular protections, using + * PBL/PBU registers for accesses with no translation. + */ + in_plb = + /* Check PLB validity */ + (env->pb[0] < env->pb[1] && + /* and address in plb area */ + eaddr >= env->pb[0] && eaddr < env->pb[1]) || + (env->pb[2] < env->pb[3] && + eaddr >= env->pb[2] && eaddr < env->pb[3]) ? 1 : 0; + if (in_plb ^ msr_px) { + /* Access in protected area */ + if (access_type == MMU_DATA_STORE) { + /* Access is not allowed */ + ret = -2; + } + } else { + /* Read-write access is allowed */ + ctx->prot |= PAGE_WRITE; + } + } + break; + + default: + /* Caller's checks mean we should never get here for other models */ + abort(); + return -1; + } + + return ret; +} + +int get_physical_address_wtlb(CPUPPCState *env, mmu_ctx_t *ctx, + target_ulong eaddr, + MMUAccessType access_type, int type, + int mmu_idx) +{ + int ret = -1; + bool real_mode = (type == ACCESS_CODE && msr_ir == 0) + || (type != ACCESS_CODE && msr_dr == 0); + + switch (env->mmu_model) { + case POWERPC_MMU_SOFT_6xx: + case POWERPC_MMU_SOFT_74xx: + if (real_mode) { + ret = check_physical(env, ctx, eaddr, access_type); + } else { + /* Try to find a BAT */ + if (env->nb_BATs != 0) { + ret = get_bat_6xx_tlb(env, ctx, eaddr, access_type); + } + if (ret < 0) { + /* We didn't match any BAT entry or don't have BATs */ + ret = get_segment_6xx_tlb(env, ctx, eaddr, access_type, type); + } + } + break; + + case POWERPC_MMU_SOFT_4xx: + case POWERPC_MMU_SOFT_4xx_Z: + if (real_mode) { + ret = check_physical(env, ctx, eaddr, access_type); + } else { + ret = mmu40x_get_physical_address(env, ctx, eaddr, access_type); + } + break; + case POWERPC_MMU_BOOKE: + ret = mmubooke_get_physical_address(env, ctx, eaddr, access_type); + break; + case POWERPC_MMU_BOOKE206: + ret = mmubooke206_get_physical_address(env, ctx, eaddr, access_type, + mmu_idx); + break; + case POWERPC_MMU_MPC8xx: + /* XXX: TODO */ + cpu_abort(env_cpu(env), "MPC8xx MMU model is not implemented\n"); + break; + case POWERPC_MMU_REAL: + if (real_mode) { + ret = check_physical(env, ctx, eaddr, access_type); + } else { + cpu_abort(env_cpu(env), + "PowerPC in real mode do not do any translation\n"); + } + return -1; + default: + cpu_abort(env_cpu(env), "Unknown or invalid MMU model\n"); + return -1; + } + + return ret; +} + +int get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, + target_ulong eaddr, MMUAccessType access_type, + int type) +{ + return get_physical_address_wtlb(env, ctx, eaddr, access_type, type, 0); +} + +hwaddr ppc_cpu_get_phys_page_debug(CPUState *cs, vaddr addr) +{ + PowerPCCPU *cpu = POWERPC_CPU(cs); + CPUPPCState *env = &cpu->env; + mmu_ctx_t ctx; + + switch (env->mmu_model) { +#if defined(TARGET_PPC64) + case POWERPC_MMU_64B: + case POWERPC_MMU_2_03: + case POWERPC_MMU_2_06: + case POWERPC_MMU_2_07: + return ppc_hash64_get_phys_page_debug(cpu, addr); + case POWERPC_MMU_3_00: + return ppc64_v3_get_phys_page_debug(cpu, addr); +#endif + + case POWERPC_MMU_32B: + case POWERPC_MMU_601: + return ppc_hash32_get_phys_page_debug(cpu, addr); + + default: + ; + } + + if (unlikely(get_physical_address(env, &ctx, addr, MMU_DATA_LOAD, + ACCESS_INT) != 0)) { + + /* + * Some MMUs have separate TLBs for code and data. If we only + * try an ACCESS_INT, we may not be able to read instructions + * mapped by code TLBs, so we also try a ACCESS_CODE. + */ + if (unlikely(get_physical_address(env, &ctx, addr, MMU_INST_FETCH, + ACCESS_CODE) != 0)) { + return -1; + } + } + + return ctx.raddr & TARGET_PAGE_MASK; +} + +static void booke206_update_mas_tlb_miss(CPUPPCState *env, target_ulong address, + MMUAccessType access_type, int mmu_idx) +{ + uint32_t epid; + bool as, pr; + uint32_t missed_tid = 0; + bool use_epid = mmubooke206_get_as(env, mmu_idx, &epid, &as, &pr); + + if (access_type == MMU_INST_FETCH) { + as = msr_ir; + } + env->spr[SPR_BOOKE_MAS0] = env->spr[SPR_BOOKE_MAS4] & MAS4_TLBSELD_MASK; + env->spr[SPR_BOOKE_MAS1] = env->spr[SPR_BOOKE_MAS4] & MAS4_TSIZED_MASK; + env->spr[SPR_BOOKE_MAS2] = env->spr[SPR_BOOKE_MAS4] & MAS4_WIMGED_MASK; + env->spr[SPR_BOOKE_MAS3] = 0; + env->spr[SPR_BOOKE_MAS6] = 0; + env->spr[SPR_BOOKE_MAS7] = 0; + + /* AS */ + if (as) { + env->spr[SPR_BOOKE_MAS1] |= MAS1_TS; + env->spr[SPR_BOOKE_MAS6] |= MAS6_SAS; + } + + env->spr[SPR_BOOKE_MAS1] |= MAS1_VALID; + env->spr[SPR_BOOKE_MAS2] |= address & MAS2_EPN_MASK; + + if (!use_epid) { + switch (env->spr[SPR_BOOKE_MAS4] & MAS4_TIDSELD_PIDZ) { + case MAS4_TIDSELD_PID0: + missed_tid = env->spr[SPR_BOOKE_PID]; + break; + case MAS4_TIDSELD_PID1: + missed_tid = env->spr[SPR_BOOKE_PID1]; + break; + case MAS4_TIDSELD_PID2: + missed_tid = env->spr[SPR_BOOKE_PID2]; + break; + } + env->spr[SPR_BOOKE_MAS6] |= env->spr[SPR_BOOKE_PID] << 16; + } else { + missed_tid = epid; + env->spr[SPR_BOOKE_MAS6] |= missed_tid << 16; + } + env->spr[SPR_BOOKE_MAS1] |= (missed_tid << MAS1_TID_SHIFT); + + + /* next victim logic */ + env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_ESEL_SHIFT; + env->last_way++; + env->last_way &= booke206_tlb_ways(env, 0) - 1; + env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_NV_SHIFT; +} + +/* Perform address translation */ +static int cpu_ppc_handle_mmu_fault(CPUPPCState *env, target_ulong address, + MMUAccessType access_type, int mmu_idx) +{ + CPUState *cs = env_cpu(env); + PowerPCCPU *cpu = POWERPC_CPU(cs); + mmu_ctx_t ctx; + int type; + int ret = 0; + + if (access_type == MMU_INST_FETCH) { + /* code access */ + type = ACCESS_CODE; + } else { + /* data access */ + type = env->access_type; + } + ret = get_physical_address_wtlb(env, &ctx, address, access_type, + type, mmu_idx); + if (ret == 0) { + tlb_set_page(cs, address & TARGET_PAGE_MASK, + ctx.raddr & TARGET_PAGE_MASK, ctx.prot, + mmu_idx, TARGET_PAGE_SIZE); + ret = 0; + } else if (ret < 0) { + LOG_MMU_STATE(cs); + if (type == ACCESS_CODE) { + switch (ret) { + case -1: + /* No matches in page tables or TLB */ + switch (env->mmu_model) { + case POWERPC_MMU_SOFT_6xx: + cs->exception_index = POWERPC_EXCP_IFTLB; + env->error_code = 1 << 18; + env->spr[SPR_IMISS] = address; + env->spr[SPR_ICMP] = 0x80000000 | ctx.ptem; + goto tlb_miss; + case POWERPC_MMU_SOFT_74xx: + cs->exception_index = POWERPC_EXCP_IFTLB; + goto tlb_miss_74xx; + case POWERPC_MMU_SOFT_4xx: + case POWERPC_MMU_SOFT_4xx_Z: + cs->exception_index = POWERPC_EXCP_ITLB; + env->error_code = 0; + env->spr[SPR_40x_DEAR] = address; + env->spr[SPR_40x_ESR] = 0x00000000; + break; + case POWERPC_MMU_BOOKE206: + booke206_update_mas_tlb_miss(env, address, 2, mmu_idx); + /* fall through */ + case POWERPC_MMU_BOOKE: + cs->exception_index = POWERPC_EXCP_ITLB; + env->error_code = 0; + env->spr[SPR_BOOKE_DEAR] = address; + env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx, MMU_DATA_LOAD); + return -1; + case POWERPC_MMU_MPC8xx: + /* XXX: TODO */ + cpu_abort(cs, "MPC8xx MMU model is not implemented\n"); + break; + case POWERPC_MMU_REAL: + cpu_abort(cs, "PowerPC in real mode should never raise " + "any MMU exceptions\n"); + return -1; + default: + cpu_abort(cs, "Unknown or invalid MMU model\n"); + return -1; + } + break; + case -2: + /* Access rights violation */ + cs->exception_index = POWERPC_EXCP_ISI; + env->error_code = 0x08000000; + break; + case -3: + /* No execute protection violation */ + if ((env->mmu_model == POWERPC_MMU_BOOKE) || + (env->mmu_model == POWERPC_MMU_BOOKE206)) { + env->spr[SPR_BOOKE_ESR] = 0x00000000; + } + cs->exception_index = POWERPC_EXCP_ISI; + env->error_code = 0x10000000; + break; + case -4: + /* Direct store exception */ + /* No code fetch is allowed in direct-store areas */ + cs->exception_index = POWERPC_EXCP_ISI; + env->error_code = 0x10000000; + break; + } + } else { + switch (ret) { + case -1: + /* No matches in page tables or TLB */ + switch (env->mmu_model) { + case POWERPC_MMU_SOFT_6xx: + if (access_type == MMU_DATA_STORE) { + cs->exception_index = POWERPC_EXCP_DSTLB; + env->error_code = 1 << 16; + } else { + cs->exception_index = POWERPC_EXCP_DLTLB; + env->error_code = 0; + } + env->spr[SPR_DMISS] = address; + env->spr[SPR_DCMP] = 0x80000000 | ctx.ptem; + tlb_miss: + env->error_code |= ctx.key << 19; + env->spr[SPR_HASH1] = ppc_hash32_hpt_base(cpu) + + get_pteg_offset32(cpu, ctx.hash[0]); + env->spr[SPR_HASH2] = ppc_hash32_hpt_base(cpu) + + get_pteg_offset32(cpu, ctx.hash[1]); + break; + case POWERPC_MMU_SOFT_74xx: + if (access_type == MMU_DATA_STORE) { + cs->exception_index = POWERPC_EXCP_DSTLB; + } else { + cs->exception_index = POWERPC_EXCP_DLTLB; + } + tlb_miss_74xx: + /* Implement LRU algorithm */ + env->error_code = ctx.key << 19; + env->spr[SPR_TLBMISS] = (address & ~((target_ulong)0x3)) | + ((env->last_way + 1) & (env->nb_ways - 1)); + env->spr[SPR_PTEHI] = 0x80000000 | ctx.ptem; + break; + case POWERPC_MMU_SOFT_4xx: + case POWERPC_MMU_SOFT_4xx_Z: + cs->exception_index = POWERPC_EXCP_DTLB; + env->error_code = 0; + env->spr[SPR_40x_DEAR] = address; + if (access_type == MMU_DATA_STORE) { + env->spr[SPR_40x_ESR] = 0x00800000; + } else { + env->spr[SPR_40x_ESR] = 0x00000000; + } + break; + case POWERPC_MMU_MPC8xx: + /* XXX: TODO */ + cpu_abort(cs, "MPC8xx MMU model is not implemented\n"); + break; + case POWERPC_MMU_BOOKE206: + booke206_update_mas_tlb_miss(env, address, access_type, mmu_idx); + /* fall through */ + case POWERPC_MMU_BOOKE: + cs->exception_index = POWERPC_EXCP_DTLB; + env->error_code = 0; + env->spr[SPR_BOOKE_DEAR] = address; + env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx, access_type); + return -1; + case POWERPC_MMU_REAL: + cpu_abort(cs, "PowerPC in real mode should never raise " + "any MMU exceptions\n"); + return -1; + default: + cpu_abort(cs, "Unknown or invalid MMU model\n"); + return -1; + } + break; + case -2: + /* Access rights violation */ + cs->exception_index = POWERPC_EXCP_DSI; + env->error_code = 0; + if (env->mmu_model == POWERPC_MMU_SOFT_4xx + || env->mmu_model == POWERPC_MMU_SOFT_4xx_Z) { + env->spr[SPR_40x_DEAR] = address; + if (access_type == MMU_DATA_STORE) { + env->spr[SPR_40x_ESR] |= 0x00800000; + } + } else if ((env->mmu_model == POWERPC_MMU_BOOKE) || + (env->mmu_model == POWERPC_MMU_BOOKE206)) { + env->spr[SPR_BOOKE_DEAR] = address; + env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx, access_type); + } else { + env->spr[SPR_DAR] = address; + if (access_type == MMU_DATA_STORE) { + env->spr[SPR_DSISR] = 0x0A000000; + } else { + env->spr[SPR_DSISR] = 0x08000000; + } + } + break; + case -4: + /* Direct store exception */ + switch (type) { + case ACCESS_FLOAT: + /* Floating point load/store */ + cs->exception_index = POWERPC_EXCP_ALIGN; + env->error_code = POWERPC_EXCP_ALIGN_FP; + env->spr[SPR_DAR] = address; + break; + case ACCESS_RES: + /* lwarx, ldarx or stwcx. */ + cs->exception_index = POWERPC_EXCP_DSI; + env->error_code = 0; + env->spr[SPR_DAR] = address; + if (access_type == MMU_DATA_STORE) { + env->spr[SPR_DSISR] = 0x06000000; + } else { + env->spr[SPR_DSISR] = 0x04000000; + } + break; + case ACCESS_EXT: + /* eciwx or ecowx */ + cs->exception_index = POWERPC_EXCP_DSI; + env->error_code = 0; + env->spr[SPR_DAR] = address; + if (access_type == MMU_DATA_STORE) { + env->spr[SPR_DSISR] = 0x06100000; + } else { + env->spr[SPR_DSISR] = 0x04100000; + } + break; + default: + printf("DSI: invalid exception (%d)\n", ret); + cs->exception_index = POWERPC_EXCP_PROGRAM; + env->error_code = + POWERPC_EXCP_INVAL | POWERPC_EXCP_INVAL_INVAL; + env->spr[SPR_DAR] = address; + break; + } + break; + } + } + ret = 1; + } + + return ret; +} + +bool ppc_cpu_tlb_fill(CPUState *cs, vaddr addr, int size, + MMUAccessType access_type, int mmu_idx, + bool probe, uintptr_t retaddr) +{ + PowerPCCPU *cpu = POWERPC_CPU(cs); + PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cs); + CPUPPCState *env = &cpu->env; + int ret; + + if (pcc->handle_mmu_fault) { + ret = pcc->handle_mmu_fault(cpu, addr, access_type, mmu_idx); + } else { + ret = cpu_ppc_handle_mmu_fault(env, addr, access_type, mmu_idx); + } + if (unlikely(ret != 0)) { + if (probe) { + return false; + } + raise_exception_err_ra(env, cs->exception_index, env->error_code, + retaddr); + } + return true; +} diff --git a/target/ppc/mmu_helper.c b/target/ppc/mmu_helper.c index 803b66f2b0..dbf7b398cd 100644 --- a/target/ppc/mmu_helper.c +++ b/target/ppc/mmu_helper.c @@ -33,1736 +33,156 @@ #include "internal.h" #include "mmu-book3s-v3.h" #include "mmu-radix64.h" +#include "exec/helper-proto.h" +#include "exec/cpu_ldst.h" -#ifdef CONFIG_TCG -#include "exec/helper-proto.h" -#include "exec/cpu_ldst.h" -#endif -/* #define DEBUG_MMU */ -/* #define DEBUG_BATS */ -/* #define DEBUG_SOFTWARE_TLB */ -/* #define DUMP_PAGE_TABLES */ -/* #define FLUSH_ALL_TLBS */ - -#ifdef DEBUG_MMU -# define LOG_MMU_STATE(cpu) log_cpu_state_mask(CPU_LOG_MMU, (cpu), 0) -#else -# define LOG_MMU_STATE(cpu) do { } while (0) -#endif - -#ifdef DEBUG_SOFTWARE_TLB -# define LOG_SWTLB(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__) -#else -# define LOG_SWTLB(...) do { } while (0) -#endif - -#ifdef DEBUG_BATS -# define LOG_BATS(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__) -#else -# define LOG_BATS(...) do { } while (0) -#endif - -/*****************************************************************************/ -/* PowerPC MMU emulation */ - -/* Context used internally during MMU translations */ -typedef struct mmu_ctx_t mmu_ctx_t; -struct mmu_ctx_t { - hwaddr raddr; /* Real address */ - hwaddr eaddr; /* Effective address */ - int prot; /* Protection bits */ - hwaddr hash[2]; /* Pagetable hash values */ - target_ulong ptem; /* Virtual segment ID | API */ - int key; /* Access key */ - int nx; /* Non-execute area */ -}; - -/* Common routines used by software and hardware TLBs emulation */ -static inline int pte_is_valid(target_ulong pte0) -{ - return pte0 & 0x80000000 ? 1 : 0; -} - -static inline void pte_invalidate(target_ulong *pte0) -{ - *pte0 &= ~0x80000000; -} - -#define PTE_PTEM_MASK 0x7FFFFFBF -#define PTE_CHECK_MASK (TARGET_PAGE_MASK | 0x7B) - -static int pp_check(int key, int pp, int nx) -{ - int access; - - /* Compute access rights */ - access = 0; - if (key == 0) { - switch (pp) { - case 0x0: - case 0x1: - case 0x2: - access |= PAGE_WRITE; - /* fall through */ - case 0x3: - access |= PAGE_READ; - break; - } - } else { - switch (pp) { - case 0x0: - access = 0; - break; - case 0x1: - case 0x3: - access = PAGE_READ; - break; - case 0x2: - access = PAGE_READ | PAGE_WRITE; - break; - } - } - if (nx == 0) { - access |= PAGE_EXEC; - } - - return access; -} - -static int check_prot(int prot, MMUAccessType access_type) -{ - return prot & prot_for_access_type(access_type) ? 0 : -2; -} - -static int ppc6xx_tlb_pte_check(mmu_ctx_t *ctx, target_ulong pte0, - target_ulong pte1, int h, - MMUAccessType access_type) -{ - target_ulong ptem, mmask; - int access, ret, pteh, ptev, pp; - - ret = -1; - /* Check validity and table match */ - ptev = pte_is_valid(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_mask(CPU_LOG_MMU, "Bad RPN/WIMG/PP\n"); - return -3; - } - } - /* Compute access rights */ - access = pp_check(ctx->key, pp, ctx->nx); - /* Keep the matching PTE information */ - ctx->raddr = pte1; - ctx->prot = access; - ret = check_prot(ctx->prot, access_type); - if (ret == 0) { - /* Access granted */ - qemu_log_mask(CPU_LOG_MMU, "PTE access granted !\n"); - } else { - /* Access right violation */ - qemu_log_mask(CPU_LOG_MMU, "PTE access rejected\n"); - } - } - } - - return ret; -} - -static int pte_update_flags(mmu_ctx_t *ctx, target_ulong *pte1p, - int ret, MMUAccessType access_type) -{ - int store = 0; - - /* Update page flags */ - if (!(*pte1p & 0x00000100)) { - /* Update accessed flag */ - *pte1p |= 0x00000100; - store = 1; - } - if (!(*pte1p & 0x00000080)) { - if (access_type == MMU_DATA_STORE && ret == 0) { - /* Update changed flag */ - *pte1p |= 0x00000080; - store = 1; - } else { - /* Force page fault for first write access */ - ctx->prot &= ~PAGE_WRITE; - } - } - - return store; -} - -/* Software driven TLB helpers */ -static inline int ppc6xx_tlb_getnum(CPUPPCState *env, target_ulong eaddr, - int way, int is_code) -{ - int nr; - - /* Select TLB num in a way from address */ - nr = (eaddr >> TARGET_PAGE_BITS) & (env->tlb_per_way - 1); - /* Select TLB way */ - nr += env->tlb_per_way * way; - /* 6xx have separate TLBs for instructions and data */ - if (is_code && env->id_tlbs == 1) { - nr += env->nb_tlb; - } - - return nr; -} - -static inline void ppc6xx_tlb_invalidate_all(CPUPPCState *env) -{ - ppc6xx_tlb_t *tlb; - int nr, max; - - /* LOG_SWTLB("Invalidate all TLBs\n"); */ - /* Invalidate all defined software TLB */ - max = env->nb_tlb; - if (env->id_tlbs == 1) { - max *= 2; - } - for (nr = 0; nr < max; nr++) { - tlb = &env->tlb.tlb6[nr]; - pte_invalidate(&tlb->pte0); - } - tlb_flush(env_cpu(env)); -} - -static inline void ppc6xx_tlb_invalidate_virt2(CPUPPCState *env, - target_ulong eaddr, - int is_code, int match_epn) -{ -#if !defined(FLUSH_ALL_TLBS) - CPUState *cs = env_cpu(env); - ppc6xx_tlb_t *tlb; - int way, nr; - - /* Invalidate ITLB + DTLB, all ways */ - for (way = 0; way < env->nb_ways; way++) { - nr = ppc6xx_tlb_getnum(env, eaddr, way, is_code); - tlb = &env->tlb.tlb6[nr]; - if (pte_is_valid(tlb->pte0) && (match_epn == 0 || eaddr == tlb->EPN)) { - LOG_SWTLB("TLB invalidate %d/%d " TARGET_FMT_lx "\n", nr, - env->nb_tlb, eaddr); - pte_invalidate(&tlb->pte0); - tlb_flush_page(cs, tlb->EPN); - } - } -#else - /* XXX: PowerPC specification say this is valid as well */ - ppc6xx_tlb_invalidate_all(env); -#endif -} - -static inline void ppc6xx_tlb_invalidate_virt(CPUPPCState *env, - target_ulong eaddr, int is_code) -{ - ppc6xx_tlb_invalidate_virt2(env, eaddr, is_code, 0); -} - -#ifdef CONFIG_TCG -static void ppc6xx_tlb_store(CPUPPCState *env, target_ulong EPN, int way, - int is_code, target_ulong pte0, target_ulong pte1) -{ - ppc6xx_tlb_t *tlb; - int nr; - - nr = ppc6xx_tlb_getnum(env, EPN, way, is_code); - tlb = &env->tlb.tlb6[nr]; - LOG_SWTLB("Set TLB %d/%d EPN " TARGET_FMT_lx " PTE0 " TARGET_FMT_lx - " PTE1 " TARGET_FMT_lx "\n", nr, env->nb_tlb, EPN, pte0, pte1); - /* Invalidate any pending reference in QEMU for this virtual address */ - ppc6xx_tlb_invalidate_virt2(env, EPN, is_code, 1); - tlb->pte0 = pte0; - tlb->pte1 = pte1; - tlb->EPN = EPN; - /* Store last way for LRU mechanism */ - env->last_way = way; -} -#endif - -static int ppc6xx_tlb_check(CPUPPCState *env, mmu_ctx_t *ctx, - target_ulong eaddr, MMUAccessType access_type) -{ - ppc6xx_tlb_t *tlb; - int nr, best, way; - int ret; - - best = -1; - ret = -1; /* No TLB found */ - for (way = 0; way < env->nb_ways; way++) { - nr = ppc6xx_tlb_getnum(env, eaddr, way, access_type == MMU_INST_FETCH); - tlb = &env->tlb.tlb6[nr]; - /* This test "emulates" the PTE index match for hardware TLBs */ - if ((eaddr & TARGET_PAGE_MASK) != tlb->EPN) { - LOG_SWTLB("TLB %d/%d %s [" TARGET_FMT_lx " " TARGET_FMT_lx - "] <> " TARGET_FMT_lx "\n", nr, env->nb_tlb, - pte_is_valid(tlb->pte0) ? "valid" : "inval", - tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE, eaddr); - continue; - } - LOG_SWTLB("TLB %d/%d %s " TARGET_FMT_lx " <> " TARGET_FMT_lx " " - TARGET_FMT_lx " %c %c\n", nr, env->nb_tlb, - pte_is_valid(tlb->pte0) ? "valid" : "inval", - tlb->EPN, eaddr, tlb->pte1, - access_type == MMU_DATA_STORE ? 'S' : 'L', - access_type == MMU_INST_FETCH ? 'I' : 'D'); - switch (ppc6xx_tlb_pte_check(ctx, tlb->pte0, tlb->pte1, - 0, access_type)) { - case -3: - /* TLB inconsistency */ - return -1; - case -2: - /* Access violation */ - ret = -2; - best = nr; - break; - case -1: - default: - /* No match */ - break; - case 0: - /* access granted */ - /* - * XXX: we should go on looping to check all TLBs - * consistency but we can speed-up the whole thing as - * the result would be undefined if TLBs are not - * consistent. - */ - ret = 0; - best = nr; - goto done; - } - } - if (best != -1) { - done: - LOG_SWTLB("found TLB at addr " TARGET_FMT_plx " prot=%01x ret=%d\n", - ctx->raddr & TARGET_PAGE_MASK, ctx->prot, ret); - /* Update page flags */ - pte_update_flags(ctx, &env->tlb.tlb6[best].pte1, ret, access_type); - } - - return ret; -} - -/* Perform BAT hit & translation */ -static inline void bat_size_prot(CPUPPCState *env, target_ulong *blp, - int *validp, int *protp, target_ulong *BATu, - target_ulong *BATl) -{ - target_ulong bl; - int pp, valid, prot; - - bl = (*BATu & 0x00001FFC) << 15; - valid = 0; - prot = 0; - if (((msr_pr == 0) && (*BATu & 0x00000002)) || - ((msr_pr != 0) && (*BATu & 0x00000001))) { - valid = 1; - pp = *BATl & 0x00000003; - if (pp != 0) { - prot = PAGE_READ | PAGE_EXEC; - if (pp == 0x2) { - prot |= PAGE_WRITE; - } - } - } - *blp = bl; - *validp = valid; - *protp = prot; -} - -static int get_bat_6xx_tlb(CPUPPCState *env, mmu_ctx_t *ctx, - target_ulong virtual, MMUAccessType access_type) -{ - target_ulong *BATlt, *BATut, *BATu, *BATl; - target_ulong BEPIl, BEPIu, bl; - int i, valid, prot; - int ret = -1; - bool ifetch = access_type == MMU_INST_FETCH; - - LOG_BATS("%s: %cBAT v " TARGET_FMT_lx "\n", __func__, - ifetch ? 'I' : 'D', virtual); - if (ifetch) { - BATlt = env->IBAT[1]; - BATut = env->IBAT[0]; - } else { - BATlt = env->DBAT[1]; - BATut = env->DBAT[0]; - } - for (i = 0; i < env->nb_BATs; i++) { - BATu = &BATut[i]; - BATl = &BATlt[i]; - BEPIu = *BATu & 0xF0000000; - BEPIl = *BATu & 0x0FFE0000; - bat_size_prot(env, &bl, &valid, &prot, BATu, BATl); - LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx - " BATl " TARGET_FMT_lx "\n", __func__, - ifetch ? 'I' : 'D', i, virtual, *BATu, *BATl); - if ((virtual & 0xF0000000) == BEPIu && - ((virtual & 0x0FFE0000) & ~bl) == BEPIl) { - /* BAT matches */ - if (valid != 0) { - /* Get physical address */ - ctx->raddr = (*BATl & 0xF0000000) | - ((virtual & 0x0FFE0000 & bl) | (*BATl & 0x0FFE0000)) | - (virtual & 0x0001F000); - /* Compute access rights */ - ctx->prot = prot; - ret = check_prot(ctx->prot, access_type); - if (ret == 0) { - LOG_BATS("BAT %d match: r " TARGET_FMT_plx " prot=%c%c\n", - i, ctx->raddr, ctx->prot & PAGE_READ ? 'R' : '-', - ctx->prot & PAGE_WRITE ? 'W' : '-'); - } - break; - } - } - } - if (ret < 0) { -#if defined(DEBUG_BATS) - if (qemu_log_enabled()) { - LOG_BATS("no BAT match for " TARGET_FMT_lx ":\n", virtual); - for (i = 0; i < 4; i++) { - BATu = &BATut[i]; - BATl = &BATlt[i]; - BEPIu = *BATu & 0xF0000000; - BEPIl = *BATu & 0x0FFE0000; - bl = (*BATu & 0x00001FFC) << 15; - LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx - " BATl " TARGET_FMT_lx "\n\t" TARGET_FMT_lx " " - TARGET_FMT_lx " " TARGET_FMT_lx "\n", - __func__, ifetch ? 'I' : 'D', i, virtual, - *BATu, *BATl, BEPIu, BEPIl, bl); - } - } -#endif - } - /* No hit */ - return ret; -} - -/* Perform segment based translation */ -static int get_segment_6xx_tlb(CPUPPCState *env, mmu_ctx_t *ctx, - target_ulong eaddr, MMUAccessType access_type, - int type) -{ - PowerPCCPU *cpu = env_archcpu(env); - hwaddr hash; - target_ulong vsid; - int ds, pr, target_page_bits; - int ret; - target_ulong sr, pgidx; - - pr = msr_pr; - ctx->eaddr = eaddr; - - sr = env->sr[eaddr >> 28]; - ctx->key = (((sr & 0x20000000) && (pr != 0)) || - ((sr & 0x40000000) && (pr == 0))) ? 1 : 0; - ds = sr & 0x80000000 ? 1 : 0; - ctx->nx = sr & 0x10000000 ? 1 : 0; - vsid = sr & 0x00FFFFFF; - target_page_bits = TARGET_PAGE_BITS; - qemu_log_mask(CPU_LOG_MMU, - "Check segment v=" TARGET_FMT_lx " %d " TARGET_FMT_lx - " nip=" TARGET_FMT_lx " lr=" TARGET_FMT_lx - " ir=%d dr=%d pr=%d %d t=%d\n", - eaddr, (int)(eaddr >> 28), sr, env->nip, env->lr, (int)msr_ir, - (int)msr_dr, pr != 0 ? 1 : 0, access_type == MMU_DATA_STORE, type); - pgidx = (eaddr & ~SEGMENT_MASK_256M) >> target_page_bits; - hash = vsid ^ pgidx; - ctx->ptem = (vsid << 7) | (pgidx >> 10); - - qemu_log_mask(CPU_LOG_MMU, - "pte segment: key=%d ds %d nx %d vsid " TARGET_FMT_lx "\n", - ctx->key, ds, ctx->nx, vsid); - ret = -1; - if (!ds) { - /* Check if instruction fetch is allowed, if needed */ - if (type != ACCESS_CODE || ctx->nx == 0) { - /* Page address translation */ - qemu_log_mask(CPU_LOG_MMU, "htab_base " TARGET_FMT_plx - " htab_mask " TARGET_FMT_plx - " hash " TARGET_FMT_plx "\n", - ppc_hash32_hpt_base(cpu), ppc_hash32_hpt_mask(cpu), hash); - ctx->hash[0] = hash; - ctx->hash[1] = ~hash; - - /* Initialize real address with an invalid value */ - ctx->raddr = (hwaddr)-1ULL; - /* Software TLB search */ - ret = ppc6xx_tlb_check(env, ctx, eaddr, access_type); -#if defined(DUMP_PAGE_TABLES) - if (qemu_loglevel_mask(CPU_LOG_MMU)) { - CPUState *cs = env_cpu(env); - hwaddr curaddr; - uint32_t a0, a1, a2, a3; - - qemu_log("Page table: " TARGET_FMT_plx " len " TARGET_FMT_plx - "\n", ppc_hash32_hpt_base(cpu), - ppc_hash32_hpt_mask(env) + 0x80); - for (curaddr = ppc_hash32_hpt_base(cpu); - curaddr < (ppc_hash32_hpt_base(cpu) - + ppc_hash32_hpt_mask(cpu) + 0x80); - curaddr += 16) { - a0 = ldl_phys(cs->as, curaddr); - a1 = ldl_phys(cs->as, curaddr + 4); - a2 = ldl_phys(cs->as, curaddr + 8); - a3 = ldl_phys(cs->as, curaddr + 12); - if (a0 != 0 || a1 != 0 || a2 != 0 || a3 != 0) { - qemu_log(TARGET_FMT_plx ": %08x %08x %08x %08x\n", - curaddr, a0, a1, a2, a3); - } - } - } -#endif - } else { - qemu_log_mask(CPU_LOG_MMU, "No access allowed\n"); - ret = -3; - } - } else { - target_ulong sr; - - qemu_log_mask(CPU_LOG_MMU, "direct store...\n"); - /* Direct-store segment : absolutely *BUGGY* for now */ - - /* - * Direct-store implies a 32-bit MMU. - * Check the Segment Register's bus unit ID (BUID). - */ - sr = env->sr[eaddr >> 28]; - if ((sr & 0x1FF00000) >> 20 == 0x07f) { - /* - * Memory-forced I/O controller interface access - * - * If T=1 and BUID=x'07F', the 601 performs a memory - * access to SR[28-31] LA[4-31], bypassing all protection - * mechanisms. - */ - ctx->raddr = ((sr & 0xF) << 28) | (eaddr & 0x0FFFFFFF); - ctx->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; - return 0; - } - - switch (type) { - case ACCESS_INT: - /* Integer load/store : only access allowed */ - break; - case ACCESS_CODE: - /* No code fetch is allowed in direct-store areas */ - return -4; - case ACCESS_FLOAT: - /* Floating point load/store */ - return -4; - case ACCESS_RES: - /* lwarx, ldarx or srwcx. */ - return -4; - case ACCESS_CACHE: - /* - * dcba, dcbt, dcbtst, dcbf, dcbi, dcbst, dcbz, or icbi - * - * Should make the instruction do no-op. As it already do - * no-op, it's quite easy :-) - */ - ctx->raddr = eaddr; - return 0; - case ACCESS_EXT: - /* eciwx or ecowx */ - return -4; - default: - qemu_log_mask(CPU_LOG_MMU, "ERROR: instruction should not need " - "address translation\n"); - return -4; - } - if ((access_type == MMU_DATA_STORE || ctx->key != 1) && - (access_type == MMU_DATA_LOAD || ctx->key != 0)) { - ctx->raddr = eaddr; - ret = 2; - } else { - ret = -2; - } - } - - return ret; -} - -/* Generic TLB check function for embedded PowerPC implementations */ -static int ppcemb_tlb_check(CPUPPCState *env, ppcemb_tlb_t *tlb, - hwaddr *raddrp, - target_ulong address, uint32_t pid, int ext, - int i) -{ - target_ulong mask; - - /* Check valid flag */ - if (!(tlb->prot & PAGE_VALID)) { - return -1; - } - mask = ~(tlb->size - 1); - LOG_SWTLB("%s: TLB %d address " TARGET_FMT_lx " PID %u <=> " TARGET_FMT_lx - " " TARGET_FMT_lx " %u %x\n", __func__, i, address, pid, tlb->EPN, - mask, (uint32_t)tlb->PID, tlb->prot); - /* Check PID */ - if (tlb->PID != 0 && tlb->PID != pid) { - return -1; - } - /* Check effective address */ - if ((address & mask) != tlb->EPN) { - return -1; - } - *raddrp = (tlb->RPN & mask) | (address & ~mask); - if (ext) { - /* Extend the physical address to 36 bits */ - *raddrp |= (uint64_t)(tlb->RPN & 0xF) << 32; - } - - return 0; -} - -#ifdef CONFIG_TCG -/* Generic TLB search function for PowerPC embedded implementations */ -static int ppcemb_tlb_search(CPUPPCState *env, target_ulong address, - uint32_t pid) -{ - ppcemb_tlb_t *tlb; - hwaddr raddr; - int i, ret; - - /* Default return value is no match */ - ret = -1; - for (i = 0; i < env->nb_tlb; i++) { - tlb = &env->tlb.tlbe[i]; - if (ppcemb_tlb_check(env, tlb, &raddr, address, pid, 0, i) == 0) { - ret = i; - break; - } - } - - return ret; -} -#endif - -/* Helpers specific to PowerPC 40x implementations */ -static inline void ppc4xx_tlb_invalidate_all(CPUPPCState *env) -{ - ppcemb_tlb_t *tlb; - int i; - - for (i = 0; i < env->nb_tlb; i++) { - tlb = &env->tlb.tlbe[i]; - tlb->prot &= ~PAGE_VALID; - } - tlb_flush(env_cpu(env)); -} - -static int mmu40x_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, - target_ulong address, - MMUAccessType access_type) -{ - ppcemb_tlb_t *tlb; - hwaddr raddr; - int i, ret, zsel, zpr, pr; - - ret = -1; - raddr = (hwaddr)-1ULL; - pr = msr_pr; - for (i = 0; i < env->nb_tlb; i++) { - tlb = &env->tlb.tlbe[i]; - if (ppcemb_tlb_check(env, tlb, &raddr, address, - env->spr[SPR_40x_PID], 0, i) < 0) { - continue; - } - zsel = (tlb->attr >> 4) & 0xF; - zpr = (env->spr[SPR_40x_ZPR] >> (30 - (2 * zsel))) & 0x3; - LOG_SWTLB("%s: TLB %d zsel %d zpr %d ty %d attr %08x\n", - __func__, i, zsel, zpr, access_type, tlb->attr); - /* Check execute enable bit */ - switch (zpr) { - case 0x2: - if (pr != 0) { - goto check_perms; - } - /* fall through */ - case 0x3: - /* All accesses granted */ - ctx->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; - ret = 0; - break; - case 0x0: - if (pr != 0) { - /* Raise Zone protection fault. */ - env->spr[SPR_40x_ESR] = 1 << 22; - ctx->prot = 0; - ret = -2; - break; - } - /* fall through */ - case 0x1: - check_perms: - /* Check from TLB entry */ - ctx->prot = tlb->prot; - ret = check_prot(ctx->prot, access_type); - if (ret == -2) { - env->spr[SPR_40x_ESR] = 0; - } - break; - } - if (ret >= 0) { - ctx->raddr = raddr; - LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx - " %d %d\n", __func__, address, ctx->raddr, ctx->prot, - ret); - return 0; - } - } - LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx - " %d %d\n", __func__, address, raddr, ctx->prot, ret); - - return ret; -} - -void store_40x_sler(CPUPPCState *env, uint32_t val) -{ - /* XXX: TO BE FIXED */ - if (val != 0x00000000) { - cpu_abort(env_cpu(env), - "Little-endian regions are not supported by now\n"); - } - env->spr[SPR_405_SLER] = val; -} - -static int mmubooke_check_tlb(CPUPPCState *env, ppcemb_tlb_t *tlb, - hwaddr *raddr, int *prot, target_ulong address, - MMUAccessType access_type, int i) -{ - int prot2; - - if (ppcemb_tlb_check(env, tlb, raddr, address, - env->spr[SPR_BOOKE_PID], - !env->nb_pids, i) >= 0) { - goto found_tlb; - } - - if (env->spr[SPR_BOOKE_PID1] && - ppcemb_tlb_check(env, tlb, raddr, address, - env->spr[SPR_BOOKE_PID1], 0, i) >= 0) { - goto found_tlb; - } - - if (env->spr[SPR_BOOKE_PID2] && - ppcemb_tlb_check(env, tlb, raddr, address, - env->spr[SPR_BOOKE_PID2], 0, i) >= 0) { - goto found_tlb; - } - - LOG_SWTLB("%s: TLB entry not found\n", __func__); - return -1; - -found_tlb: - - if (msr_pr != 0) { - prot2 = tlb->prot & 0xF; - } else { - prot2 = (tlb->prot >> 4) & 0xF; - } - - /* Check the address space */ - if ((access_type == MMU_INST_FETCH ? msr_ir : msr_dr) != (tlb->attr & 1)) { - LOG_SWTLB("%s: AS doesn't match\n", __func__); - return -1; - } - - *prot = prot2; - if (prot2 & prot_for_access_type(access_type)) { - LOG_SWTLB("%s: good TLB!\n", __func__); - return 0; - } - - LOG_SWTLB("%s: no prot match: %x\n", __func__, prot2); - return access_type == MMU_INST_FETCH ? -3 : -2; -} - -static int mmubooke_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, - target_ulong address, - MMUAccessType access_type) -{ - ppcemb_tlb_t *tlb; - hwaddr raddr; - int i, ret; - - ret = -1; - raddr = (hwaddr)-1ULL; - for (i = 0; i < env->nb_tlb; i++) { - tlb = &env->tlb.tlbe[i]; - ret = mmubooke_check_tlb(env, tlb, &raddr, &ctx->prot, address, - access_type, i); - if (ret != -1) { - break; - } - } - - if (ret >= 0) { - ctx->raddr = raddr; - LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx - " %d %d\n", __func__, address, ctx->raddr, ctx->prot, - ret); - } else { - LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx - " %d %d\n", __func__, address, raddr, ctx->prot, ret); - } - - return ret; -} - -#ifdef CONFIG_TCG -static void booke206_flush_tlb(CPUPPCState *env, int flags, - const int check_iprot) -{ - int tlb_size; - int i, j; - ppcmas_tlb_t *tlb = env->tlb.tlbm; - - for (i = 0; i < BOOKE206_MAX_TLBN; i++) { - if (flags & (1 << i)) { - tlb_size = booke206_tlb_size(env, i); - for (j = 0; j < tlb_size; j++) { - if (!check_iprot || !(tlb[j].mas1 & MAS1_IPROT)) { - tlb[j].mas1 &= ~MAS1_VALID; - } - } - } - tlb += booke206_tlb_size(env, i); - } - - tlb_flush(env_cpu(env)); -} -#endif - -static hwaddr booke206_tlb_to_page_size(CPUPPCState *env, - ppcmas_tlb_t *tlb) -{ - int tlbm_size; - - tlbm_size = (tlb->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT; - - return 1024ULL << tlbm_size; -} - -/* TLB check function for MAS based SoftTLBs */ -static int ppcmas_tlb_check(CPUPPCState *env, ppcmas_tlb_t *tlb, - hwaddr *raddrp, target_ulong address, - uint32_t pid) -{ - hwaddr mask; - uint32_t tlb_pid; - - if (!msr_cm) { - /* In 32bit mode we can only address 32bit EAs */ - address = (uint32_t)address; - } - - /* Check valid flag */ - if (!(tlb->mas1 & MAS1_VALID)) { - return -1; - } - - mask = ~(booke206_tlb_to_page_size(env, tlb) - 1); - LOG_SWTLB("%s: TLB ADDR=0x" TARGET_FMT_lx " PID=0x%x MAS1=0x%x MAS2=0x%" - PRIx64 " mask=0x%" HWADDR_PRIx " MAS7_3=0x%" PRIx64 " MAS8=0x%" - PRIx32 "\n", __func__, address, pid, tlb->mas1, tlb->mas2, mask, - tlb->mas7_3, tlb->mas8); - - /* Check PID */ - tlb_pid = (tlb->mas1 & MAS1_TID_MASK) >> MAS1_TID_SHIFT; - if (tlb_pid != 0 && tlb_pid != pid) { - return -1; - } - - /* Check effective address */ - if ((address & mask) != (tlb->mas2 & MAS2_EPN_MASK)) { - return -1; - } - - if (raddrp) { - *raddrp = (tlb->mas7_3 & mask) | (address & ~mask); - } - - return 0; -} - -static bool is_epid_mmu(int mmu_idx) -{ - return mmu_idx == PPC_TLB_EPID_STORE || mmu_idx == PPC_TLB_EPID_LOAD; -} - -static uint32_t mmubooke206_esr(int mmu_idx, MMUAccessType access_type) -{ - uint32_t esr = 0; - if (access_type == MMU_DATA_STORE) { - esr |= ESR_ST; - } - if (is_epid_mmu(mmu_idx)) { - esr |= ESR_EPID; - } - return esr; -} - -/* - * Get EPID register given the mmu_idx. If this is regular load, - * construct the EPID access bits from current processor state - * - * Get the effective AS and PR bits and the PID. The PID is returned - * only if EPID load is requested, otherwise the caller must detect - * the correct EPID. Return true if valid EPID is returned. - */ -static bool mmubooke206_get_as(CPUPPCState *env, - int mmu_idx, uint32_t *epid_out, - bool *as_out, bool *pr_out) -{ - if (is_epid_mmu(mmu_idx)) { - uint32_t epidr; - if (mmu_idx == PPC_TLB_EPID_STORE) { - epidr = env->spr[SPR_BOOKE_EPSC]; - } else { - epidr = env->spr[SPR_BOOKE_EPLC]; - } - *epid_out = (epidr & EPID_EPID) >> EPID_EPID_SHIFT; - *as_out = !!(epidr & EPID_EAS); - *pr_out = !!(epidr & EPID_EPR); - return true; - } else { - *as_out = msr_ds; - *pr_out = msr_pr; - return false; - } -} - -/* Check if the tlb found by hashing really matches */ -static int mmubooke206_check_tlb(CPUPPCState *env, ppcmas_tlb_t *tlb, - hwaddr *raddr, int *prot, - target_ulong address, - MMUAccessType access_type, int mmu_idx) -{ - int prot2 = 0; - uint32_t epid; - bool as, pr; - bool use_epid = mmubooke206_get_as(env, mmu_idx, &epid, &as, &pr); - - if (!use_epid) { - if (ppcmas_tlb_check(env, tlb, raddr, address, - env->spr[SPR_BOOKE_PID]) >= 0) { - goto found_tlb; - } - - if (env->spr[SPR_BOOKE_PID1] && - ppcmas_tlb_check(env, tlb, raddr, address, - env->spr[SPR_BOOKE_PID1]) >= 0) { - goto found_tlb; - } - - if (env->spr[SPR_BOOKE_PID2] && - ppcmas_tlb_check(env, tlb, raddr, address, - env->spr[SPR_BOOKE_PID2]) >= 0) { - goto found_tlb; - } - } else { - if (ppcmas_tlb_check(env, tlb, raddr, address, epid) >= 0) { - goto found_tlb; - } - } - - LOG_SWTLB("%s: TLB entry not found\n", __func__); - return -1; - -found_tlb: - - if (pr) { - if (tlb->mas7_3 & MAS3_UR) { - prot2 |= PAGE_READ; - } - if (tlb->mas7_3 & MAS3_UW) { - prot2 |= PAGE_WRITE; - } - if (tlb->mas7_3 & MAS3_UX) { - prot2 |= PAGE_EXEC; - } - } else { - if (tlb->mas7_3 & MAS3_SR) { - prot2 |= PAGE_READ; - } - if (tlb->mas7_3 & MAS3_SW) { - prot2 |= PAGE_WRITE; - } - if (tlb->mas7_3 & MAS3_SX) { - prot2 |= PAGE_EXEC; - } - } - - /* Check the address space and permissions */ - if (access_type == MMU_INST_FETCH) { - /* There is no way to fetch code using epid load */ - assert(!use_epid); - as = msr_ir; - } - - if (as != ((tlb->mas1 & MAS1_TS) >> MAS1_TS_SHIFT)) { - LOG_SWTLB("%s: AS doesn't match\n", __func__); - return -1; - } - - *prot = prot2; - if (prot2 & prot_for_access_type(access_type)) { - LOG_SWTLB("%s: good TLB!\n", __func__); - return 0; - } - - LOG_SWTLB("%s: no prot match: %x\n", __func__, prot2); - return access_type == MMU_INST_FETCH ? -3 : -2; -} - -static int mmubooke206_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, - target_ulong address, - MMUAccessType access_type, - int mmu_idx) -{ - ppcmas_tlb_t *tlb; - hwaddr raddr; - int i, j, ret; - - ret = -1; - raddr = (hwaddr)-1ULL; - - for (i = 0; i < BOOKE206_MAX_TLBN; i++) { - int ways = booke206_tlb_ways(env, i); - - for (j = 0; j < ways; j++) { - tlb = booke206_get_tlbm(env, i, address, j); - if (!tlb) { - continue; - } - ret = mmubooke206_check_tlb(env, tlb, &raddr, &ctx->prot, address, - access_type, mmu_idx); - if (ret != -1) { - goto found_tlb; - } - } - } - -found_tlb: - - if (ret >= 0) { - ctx->raddr = raddr; - LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx - " %d %d\n", __func__, address, ctx->raddr, ctx->prot, - ret); - } else { - LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx - " %d %d\n", __func__, address, raddr, ctx->prot, ret); - } - - return ret; -} - -static const char *book3e_tsize_to_str[32] = { - "1K", "2K", "4K", "8K", "16K", "32K", "64K", "128K", "256K", "512K", - "1M", "2M", "4M", "8M", "16M", "32M", "64M", "128M", "256M", "512M", - "1G", "2G", "4G", "8G", "16G", "32G", "64G", "128G", "256G", "512G", - "1T", "2T" -}; - -static void mmubooke_dump_mmu(CPUPPCState *env) -{ - ppcemb_tlb_t *entry; - int i; - - if (kvm_enabled() && !env->kvm_sw_tlb) { - qemu_printf("Cannot access KVM TLB\n"); - return; - } - - qemu_printf("\nTLB:\n"); - qemu_printf("Effective Physical Size PID Prot " - "Attr\n"); - - entry = &env->tlb.tlbe[0]; - for (i = 0; i < env->nb_tlb; i++, entry++) { - hwaddr ea, pa; - target_ulong mask; - uint64_t size = (uint64_t)entry->size; - char size_buf[20]; - - /* Check valid flag */ - if (!(entry->prot & PAGE_VALID)) { - continue; - } - - mask = ~(entry->size - 1); - ea = entry->EPN & mask; - pa = entry->RPN & mask; - /* Extend the physical address to 36 bits */ - pa |= (hwaddr)(entry->RPN & 0xF) << 32; - if (size >= 1 * MiB) { - snprintf(size_buf, sizeof(size_buf), "%3" PRId64 "M", size / MiB); - } else { - snprintf(size_buf, sizeof(size_buf), "%3" PRId64 "k", size / KiB); - } - qemu_printf("0x%016" PRIx64 " 0x%016" PRIx64 " %s %-5u %08x %08x\n", - (uint64_t)ea, (uint64_t)pa, size_buf, (uint32_t)entry->PID, - entry->prot, entry->attr); - } - -} - -static void mmubooke206_dump_one_tlb(CPUPPCState *env, int tlbn, int offset, - int tlbsize) -{ - ppcmas_tlb_t *entry; - int i; - - qemu_printf("\nTLB%d:\n", tlbn); - qemu_printf("Effective Physical Size TID TS SRWX" - " URWX WIMGE U0123\n"); - - entry = &env->tlb.tlbm[offset]; - for (i = 0; i < tlbsize; i++, entry++) { - hwaddr ea, pa, size; - int tsize; - - if (!(entry->mas1 & MAS1_VALID)) { - continue; - } - - tsize = (entry->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT; - size = 1024ULL << tsize; - ea = entry->mas2 & ~(size - 1); - pa = entry->mas7_3 & ~(size - 1); - - qemu_printf("0x%016" PRIx64 " 0x%016" PRIx64 " %4s %-5u %1u S%c%c%c" - "U%c%c%c %c%c%c%c%c U%c%c%c%c\n", - (uint64_t)ea, (uint64_t)pa, - book3e_tsize_to_str[tsize], - (entry->mas1 & MAS1_TID_MASK) >> MAS1_TID_SHIFT, - (entry->mas1 & MAS1_TS) >> MAS1_TS_SHIFT, - entry->mas7_3 & MAS3_SR ? 'R' : '-', - entry->mas7_3 & MAS3_SW ? 'W' : '-', - entry->mas7_3 & MAS3_SX ? 'X' : '-', - entry->mas7_3 & MAS3_UR ? 'R' : '-', - entry->mas7_3 & MAS3_UW ? 'W' : '-', - entry->mas7_3 & MAS3_UX ? 'X' : '-', - entry->mas2 & MAS2_W ? 'W' : '-', - entry->mas2 & MAS2_I ? 'I' : '-', - entry->mas2 & MAS2_M ? 'M' : '-', - entry->mas2 & MAS2_G ? 'G' : '-', - entry->mas2 & MAS2_E ? 'E' : '-', - entry->mas7_3 & MAS3_U0 ? '0' : '-', - entry->mas7_3 & MAS3_U1 ? '1' : '-', - entry->mas7_3 & MAS3_U2 ? '2' : '-', - entry->mas7_3 & MAS3_U3 ? '3' : '-'); - } -} - -static void mmubooke206_dump_mmu(CPUPPCState *env) -{ - int offset = 0; - int i; - - if (kvm_enabled() && !env->kvm_sw_tlb) { - qemu_printf("Cannot access KVM TLB\n"); - return; - } +/* #define DEBUG_BATS */ +/* #define DEBUG_SOFTWARE_TLB */ +/* #define DUMP_PAGE_TABLES */ +/* #define FLUSH_ALL_TLBS */ - for (i = 0; i < BOOKE206_MAX_TLBN; i++) { - int size = booke206_tlb_size(env, i); +#ifdef DEBUG_SOFTWARE_TLB +# define LOG_SWTLB(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__) +#else +# define LOG_SWTLB(...) do { } while (0) +#endif - if (size == 0) { - continue; - } +#ifdef DEBUG_BATS +# define LOG_BATS(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__) +#else +# define LOG_BATS(...) do { } while (0) +#endif - mmubooke206_dump_one_tlb(env, i, offset, size); - offset += size; - } -} +/*****************************************************************************/ +/* PowerPC MMU emulation */ -static void mmu6xx_dump_BATs(CPUPPCState *env, int type) +/* Software driven TLB helpers */ +static inline void ppc6xx_tlb_invalidate_all(CPUPPCState *env) { - target_ulong *BATlt, *BATut, *BATu, *BATl; - target_ulong BEPIl, BEPIu, bl; - int i; + ppc6xx_tlb_t *tlb; + int nr, max; - switch (type) { - case ACCESS_CODE: - BATlt = env->IBAT[1]; - BATut = env->IBAT[0]; - break; - default: - BATlt = env->DBAT[1]; - BATut = env->DBAT[0]; - break; + /* LOG_SWTLB("Invalidate all TLBs\n"); */ + /* Invalidate all defined software TLB */ + max = env->nb_tlb; + if (env->id_tlbs == 1) { + max *= 2; } - - for (i = 0; i < env->nb_BATs; i++) { - BATu = &BATut[i]; - BATl = &BATlt[i]; - BEPIu = *BATu & 0xF0000000; - BEPIl = *BATu & 0x0FFE0000; - bl = (*BATu & 0x00001FFC) << 15; - qemu_printf("%s BAT%d BATu " TARGET_FMT_lx - " BATl " TARGET_FMT_lx "\n\t" TARGET_FMT_lx " " - TARGET_FMT_lx " " TARGET_FMT_lx "\n", - type == ACCESS_CODE ? "code" : "data", i, - *BATu, *BATl, BEPIu, BEPIl, bl); + for (nr = 0; nr < max; nr++) { + tlb = &env->tlb.tlb6[nr]; + pte_invalidate(&tlb->pte0); } + tlb_flush(env_cpu(env)); } -static void mmu6xx_dump_mmu(CPUPPCState *env) +static inline void ppc6xx_tlb_invalidate_virt2(CPUPPCState *env, + target_ulong eaddr, + int is_code, int match_epn) { - PowerPCCPU *cpu = env_archcpu(env); +#if !defined(FLUSH_ALL_TLBS) + CPUState *cs = env_cpu(env); ppc6xx_tlb_t *tlb; - target_ulong sr; - int type, way, entry, i; - - qemu_printf("HTAB base = 0x%"HWADDR_PRIx"\n", ppc_hash32_hpt_base(cpu)); - qemu_printf("HTAB mask = 0x%"HWADDR_PRIx"\n", ppc_hash32_hpt_mask(cpu)); - - qemu_printf("\nSegment registers:\n"); - for (i = 0; i < 32; i++) { - sr = env->sr[i]; - if (sr & 0x80000000) { - qemu_printf("%02d T=%d Ks=%d Kp=%d BUID=0x%03x " - "CNTLR_SPEC=0x%05x\n", i, - sr & 0x80000000 ? 1 : 0, sr & 0x40000000 ? 1 : 0, - sr & 0x20000000 ? 1 : 0, (uint32_t)((sr >> 20) & 0x1FF), - (uint32_t)(sr & 0xFFFFF)); - } else { - qemu_printf("%02d T=%d Ks=%d Kp=%d N=%d VSID=0x%06x\n", i, - sr & 0x80000000 ? 1 : 0, sr & 0x40000000 ? 1 : 0, - sr & 0x20000000 ? 1 : 0, sr & 0x10000000 ? 1 : 0, - (uint32_t)(sr & 0x00FFFFFF)); - } - } - - qemu_printf("\nBATs:\n"); - mmu6xx_dump_BATs(env, ACCESS_INT); - mmu6xx_dump_BATs(env, ACCESS_CODE); - - if (env->id_tlbs != 1) { - qemu_printf("ERROR: 6xx MMU should have separated TLB" - " for code and data\n"); - } + int way, nr; - qemu_printf("\nTLBs [EPN EPN + SIZE]\n"); - - for (type = 0; type < 2; type++) { - for (way = 0; way < env->nb_ways; way++) { - for (entry = env->nb_tlb * type + env->tlb_per_way * way; - entry < (env->nb_tlb * type + env->tlb_per_way * (way + 1)); - entry++) { - - tlb = &env->tlb.tlb6[entry]; - qemu_printf("%s TLB %02d/%02d way:%d %s [" - TARGET_FMT_lx " " TARGET_FMT_lx "]\n", - type ? "code" : "data", entry % env->nb_tlb, - env->nb_tlb, way, - pte_is_valid(tlb->pte0) ? "valid" : "inval", - tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE); - } + /* Invalidate ITLB + DTLB, all ways */ + for (way = 0; way < env->nb_ways; way++) { + nr = ppc6xx_tlb_getnum(env, eaddr, way, is_code); + tlb = &env->tlb.tlb6[nr]; + if (pte_is_valid(tlb->pte0) && (match_epn == 0 || eaddr == tlb->EPN)) { + LOG_SWTLB("TLB invalidate %d/%d " TARGET_FMT_lx "\n", nr, + env->nb_tlb, eaddr); + pte_invalidate(&tlb->pte0); + tlb_flush_page(cs, tlb->EPN); } } -} - -void dump_mmu(CPUPPCState *env) -{ - switch (env->mmu_model) { - case POWERPC_MMU_BOOKE: - mmubooke_dump_mmu(env); - break; - case POWERPC_MMU_BOOKE206: - mmubooke206_dump_mmu(env); - break; - case POWERPC_MMU_SOFT_6xx: - case POWERPC_MMU_SOFT_74xx: - mmu6xx_dump_mmu(env); - break; -#if defined(TARGET_PPC64) - case POWERPC_MMU_64B: - case POWERPC_MMU_2_03: - case POWERPC_MMU_2_06: - case POWERPC_MMU_2_07: - dump_slb(env_archcpu(env)); - break; - case POWERPC_MMU_3_00: - if (ppc64_v3_radix(env_archcpu(env))) { - qemu_log_mask(LOG_UNIMP, "%s: the PPC64 MMU is unsupported\n", - __func__); - } else { - dump_slb(env_archcpu(env)); - } - break; +#else + /* XXX: PowerPC specification say this is valid as well */ + ppc6xx_tlb_invalidate_all(env); #endif - default: - qemu_log_mask(LOG_UNIMP, "%s: unimplemented\n", __func__); - } } -static int check_physical(CPUPPCState *env, mmu_ctx_t *ctx, target_ulong eaddr, - MMUAccessType access_type) +static inline void ppc6xx_tlb_invalidate_virt(CPUPPCState *env, + target_ulong eaddr, int is_code) { - int in_plb, ret; - - ctx->raddr = eaddr; - ctx->prot = PAGE_READ | PAGE_EXEC; - ret = 0; - switch (env->mmu_model) { - case POWERPC_MMU_SOFT_6xx: - case POWERPC_MMU_SOFT_74xx: - case POWERPC_MMU_SOFT_4xx: - case POWERPC_MMU_REAL: - case POWERPC_MMU_BOOKE: - ctx->prot |= PAGE_WRITE; - break; - - case POWERPC_MMU_SOFT_4xx_Z: - if (unlikely(msr_pe != 0)) { - /* - * 403 family add some particular protections, using - * PBL/PBU registers for accesses with no translation. - */ - in_plb = - /* Check PLB validity */ - (env->pb[0] < env->pb[1] && - /* and address in plb area */ - eaddr >= env->pb[0] && eaddr < env->pb[1]) || - (env->pb[2] < env->pb[3] && - eaddr >= env->pb[2] && eaddr < env->pb[3]) ? 1 : 0; - if (in_plb ^ msr_px) { - /* Access in protected area */ - if (access_type == MMU_DATA_STORE) { - /* Access is not allowed */ - ret = -2; - } - } else { - /* Read-write access is allowed */ - ctx->prot |= PAGE_WRITE; - } - } - break; - - default: - /* Caller's checks mean we should never get here for other models */ - abort(); - return -1; - } - - return ret; + ppc6xx_tlb_invalidate_virt2(env, eaddr, is_code, 0); } -static int get_physical_address_wtlb(CPUPPCState *env, mmu_ctx_t *ctx, - target_ulong eaddr, - MMUAccessType access_type, int type, - int mmu_idx) +static void ppc6xx_tlb_store(CPUPPCState *env, target_ulong EPN, int way, + int is_code, target_ulong pte0, target_ulong pte1) { - int ret = -1; - bool real_mode = (type == ACCESS_CODE && msr_ir == 0) - || (type != ACCESS_CODE && msr_dr == 0); - - switch (env->mmu_model) { - case POWERPC_MMU_SOFT_6xx: - case POWERPC_MMU_SOFT_74xx: - if (real_mode) { - ret = check_physical(env, ctx, eaddr, access_type); - } else { - /* Try to find a BAT */ - if (env->nb_BATs != 0) { - ret = get_bat_6xx_tlb(env, ctx, eaddr, access_type); - } - if (ret < 0) { - /* We didn't match any BAT entry or don't have BATs */ - ret = get_segment_6xx_tlb(env, ctx, eaddr, access_type, type); - } - } - break; - - case POWERPC_MMU_SOFT_4xx: - case POWERPC_MMU_SOFT_4xx_Z: - if (real_mode) { - ret = check_physical(env, ctx, eaddr, access_type); - } else { - ret = mmu40x_get_physical_address(env, ctx, eaddr, access_type); - } - break; - case POWERPC_MMU_BOOKE: - ret = mmubooke_get_physical_address(env, ctx, eaddr, access_type); - break; - case POWERPC_MMU_BOOKE206: - ret = mmubooke206_get_physical_address(env, ctx, eaddr, access_type, - mmu_idx); - break; - case POWERPC_MMU_MPC8xx: - /* XXX: TODO */ - cpu_abort(env_cpu(env), "MPC8xx MMU model is not implemented\n"); - break; - case POWERPC_MMU_REAL: - if (real_mode) { - ret = check_physical(env, ctx, eaddr, access_type); - } else { - cpu_abort(env_cpu(env), - "PowerPC in real mode do not do any translation\n"); - } - return -1; - default: - cpu_abort(env_cpu(env), "Unknown or invalid MMU model\n"); - return -1; - } - - return ret; -} + ppc6xx_tlb_t *tlb; + int nr; -#ifdef CONFIG_TCG -static int get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, - target_ulong eaddr, MMUAccessType access_type, - int type) -{ - return get_physical_address_wtlb(env, ctx, eaddr, access_type, type, 0); + nr = ppc6xx_tlb_getnum(env, EPN, way, is_code); + tlb = &env->tlb.tlb6[nr]; + LOG_SWTLB("Set TLB %d/%d EPN " TARGET_FMT_lx " PTE0 " TARGET_FMT_lx + " PTE1 " TARGET_FMT_lx "\n", nr, env->nb_tlb, EPN, pte0, pte1); + /* Invalidate any pending reference in QEMU for this virtual address */ + ppc6xx_tlb_invalidate_virt2(env, EPN, is_code, 1); + tlb->pte0 = pte0; + tlb->pte1 = pte1; + tlb->EPN = EPN; + /* Store last way for LRU mechanism */ + env->last_way = way; } -#endif -hwaddr ppc_cpu_get_phys_page_debug(CPUState *cs, vaddr addr) +/* Generic TLB search function for PowerPC embedded implementations */ +static int ppcemb_tlb_search(CPUPPCState *env, target_ulong address, + uint32_t pid) { - PowerPCCPU *cpu = POWERPC_CPU(cs); - CPUPPCState *env = &cpu->env; - mmu_ctx_t ctx; - - switch (env->mmu_model) { -#if defined(TARGET_PPC64) - case POWERPC_MMU_64B: - case POWERPC_MMU_2_03: - case POWERPC_MMU_2_06: - case POWERPC_MMU_2_07: - return ppc_hash64_get_phys_page_debug(cpu, addr); - case POWERPC_MMU_3_00: - return ppc64_v3_get_phys_page_debug(cpu, addr); -#endif - - case POWERPC_MMU_32B: - case POWERPC_MMU_601: - return ppc_hash32_get_phys_page_debug(cpu, addr); - - default: - ; - } - - if (unlikely(get_physical_address(env, &ctx, addr, MMU_DATA_LOAD, - ACCESS_INT) != 0)) { + ppcemb_tlb_t *tlb; + hwaddr raddr; + int i, ret; - /* - * Some MMUs have separate TLBs for code and data. If we only - * try an ACCESS_INT, we may not be able to read instructions - * mapped by code TLBs, so we also try a ACCESS_CODE. - */ - if (unlikely(get_physical_address(env, &ctx, addr, MMU_INST_FETCH, - ACCESS_CODE) != 0)) { - return -1; + /* Default return value is no match */ + ret = -1; + for (i = 0; i < env->nb_tlb; i++) { + tlb = &env->tlb.tlbe[i]; + if (ppcemb_tlb_check(env, tlb, &raddr, address, pid, 0, i) == 0) { + ret = i; + break; } } - return ctx.raddr & TARGET_PAGE_MASK; + return ret; } -static void booke206_update_mas_tlb_miss(CPUPPCState *env, target_ulong address, - MMUAccessType access_type, int mmu_idx) +/* Helpers specific to PowerPC 40x implementations */ +static inline void ppc4xx_tlb_invalidate_all(CPUPPCState *env) { - uint32_t epid; - bool as, pr; - uint32_t missed_tid = 0; - bool use_epid = mmubooke206_get_as(env, mmu_idx, &epid, &as, &pr); - - if (access_type == MMU_INST_FETCH) { - as = msr_ir; - } - env->spr[SPR_BOOKE_MAS0] = env->spr[SPR_BOOKE_MAS4] & MAS4_TLBSELD_MASK; - env->spr[SPR_BOOKE_MAS1] = env->spr[SPR_BOOKE_MAS4] & MAS4_TSIZED_MASK; - env->spr[SPR_BOOKE_MAS2] = env->spr[SPR_BOOKE_MAS4] & MAS4_WIMGED_MASK; - env->spr[SPR_BOOKE_MAS3] = 0; - env->spr[SPR_BOOKE_MAS6] = 0; - env->spr[SPR_BOOKE_MAS7] = 0; - - /* AS */ - if (as) { - env->spr[SPR_BOOKE_MAS1] |= MAS1_TS; - env->spr[SPR_BOOKE_MAS6] |= MAS6_SAS; - } - - env->spr[SPR_BOOKE_MAS1] |= MAS1_VALID; - env->spr[SPR_BOOKE_MAS2] |= address & MAS2_EPN_MASK; + ppcemb_tlb_t *tlb; + int i; - if (!use_epid) { - switch (env->spr[SPR_BOOKE_MAS4] & MAS4_TIDSELD_PIDZ) { - case MAS4_TIDSELD_PID0: - missed_tid = env->spr[SPR_BOOKE_PID]; - break; - case MAS4_TIDSELD_PID1: - missed_tid = env->spr[SPR_BOOKE_PID1]; - break; - case MAS4_TIDSELD_PID2: - missed_tid = env->spr[SPR_BOOKE_PID2]; - break; - } - env->spr[SPR_BOOKE_MAS6] |= env->spr[SPR_BOOKE_PID] << 16; - } else { - missed_tid = epid; - env->spr[SPR_BOOKE_MAS6] |= missed_tid << 16; + for (i = 0; i < env->nb_tlb; i++) { + tlb = &env->tlb.tlbe[i]; + tlb->prot &= ~PAGE_VALID; } - env->spr[SPR_BOOKE_MAS1] |= (missed_tid << MAS1_TID_SHIFT); - - - /* next victim logic */ - env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_ESEL_SHIFT; - env->last_way++; - env->last_way &= booke206_tlb_ways(env, 0) - 1; - env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_NV_SHIFT; + tlb_flush(env_cpu(env)); } -/* Perform address translation */ -static int cpu_ppc_handle_mmu_fault(CPUPPCState *env, target_ulong address, - MMUAccessType access_type, int mmu_idx) +static void booke206_flush_tlb(CPUPPCState *env, int flags, + const int check_iprot) { - CPUState *cs = env_cpu(env); - PowerPCCPU *cpu = POWERPC_CPU(cs); - mmu_ctx_t ctx; - int type; - int ret = 0; + int tlb_size; + int i, j; + ppcmas_tlb_t *tlb = env->tlb.tlbm; - if (access_type == MMU_INST_FETCH) { - /* code access */ - type = ACCESS_CODE; - } else { - /* data access */ - type = env->access_type; - } - ret = get_physical_address_wtlb(env, &ctx, address, access_type, - type, mmu_idx); - if (ret == 0) { - tlb_set_page(cs, address & TARGET_PAGE_MASK, - ctx.raddr & TARGET_PAGE_MASK, ctx.prot, - mmu_idx, TARGET_PAGE_SIZE); - ret = 0; - } else if (ret < 0) { - LOG_MMU_STATE(cs); - if (type == ACCESS_CODE) { - switch (ret) { - case -1: - /* No matches in page tables or TLB */ - switch (env->mmu_model) { - case POWERPC_MMU_SOFT_6xx: - cs->exception_index = POWERPC_EXCP_IFTLB; - env->error_code = 1 << 18; - env->spr[SPR_IMISS] = address; - env->spr[SPR_ICMP] = 0x80000000 | ctx.ptem; - goto tlb_miss; - case POWERPC_MMU_SOFT_74xx: - cs->exception_index = POWERPC_EXCP_IFTLB; - goto tlb_miss_74xx; - case POWERPC_MMU_SOFT_4xx: - case POWERPC_MMU_SOFT_4xx_Z: - cs->exception_index = POWERPC_EXCP_ITLB; - env->error_code = 0; - env->spr[SPR_40x_DEAR] = address; - env->spr[SPR_40x_ESR] = 0x00000000; - break; - case POWERPC_MMU_BOOKE206: - booke206_update_mas_tlb_miss(env, address, 2, mmu_idx); - /* fall through */ - case POWERPC_MMU_BOOKE: - cs->exception_index = POWERPC_EXCP_ITLB; - env->error_code = 0; - env->spr[SPR_BOOKE_DEAR] = address; - env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx, MMU_DATA_LOAD); - return -1; - case POWERPC_MMU_MPC8xx: - /* XXX: TODO */ - cpu_abort(cs, "MPC8xx MMU model is not implemented\n"); - break; - case POWERPC_MMU_REAL: - cpu_abort(cs, "PowerPC in real mode should never raise " - "any MMU exceptions\n"); - return -1; - default: - cpu_abort(cs, "Unknown or invalid MMU model\n"); - return -1; - } - break; - case -2: - /* Access rights violation */ - cs->exception_index = POWERPC_EXCP_ISI; - env->error_code = 0x08000000; - break; - case -3: - /* No execute protection violation */ - if ((env->mmu_model == POWERPC_MMU_BOOKE) || - (env->mmu_model == POWERPC_MMU_BOOKE206)) { - env->spr[SPR_BOOKE_ESR] = 0x00000000; - } - cs->exception_index = POWERPC_EXCP_ISI; - env->error_code = 0x10000000; - break; - case -4: - /* Direct store exception */ - /* No code fetch is allowed in direct-store areas */ - cs->exception_index = POWERPC_EXCP_ISI; - env->error_code = 0x10000000; - break; - } - } else { - switch (ret) { - case -1: - /* No matches in page tables or TLB */ - switch (env->mmu_model) { - case POWERPC_MMU_SOFT_6xx: - if (access_type == MMU_DATA_STORE) { - cs->exception_index = POWERPC_EXCP_DSTLB; - env->error_code = 1 << 16; - } else { - cs->exception_index = POWERPC_EXCP_DLTLB; - env->error_code = 0; - } - env->spr[SPR_DMISS] = address; - env->spr[SPR_DCMP] = 0x80000000 | ctx.ptem; - tlb_miss: - env->error_code |= ctx.key << 19; - env->spr[SPR_HASH1] = ppc_hash32_hpt_base(cpu) + - get_pteg_offset32(cpu, ctx.hash[0]); - env->spr[SPR_HASH2] = ppc_hash32_hpt_base(cpu) + - get_pteg_offset32(cpu, ctx.hash[1]); - break; - case POWERPC_MMU_SOFT_74xx: - if (access_type == MMU_DATA_STORE) { - cs->exception_index = POWERPC_EXCP_DSTLB; - } else { - cs->exception_index = POWERPC_EXCP_DLTLB; - } - tlb_miss_74xx: - /* Implement LRU algorithm */ - env->error_code = ctx.key << 19; - env->spr[SPR_TLBMISS] = (address & ~((target_ulong)0x3)) | - ((env->last_way + 1) & (env->nb_ways - 1)); - env->spr[SPR_PTEHI] = 0x80000000 | ctx.ptem; - break; - case POWERPC_MMU_SOFT_4xx: - case POWERPC_MMU_SOFT_4xx_Z: - cs->exception_index = POWERPC_EXCP_DTLB; - env->error_code = 0; - env->spr[SPR_40x_DEAR] = address; - if (access_type == MMU_DATA_STORE) { - env->spr[SPR_40x_ESR] = 0x00800000; - } else { - env->spr[SPR_40x_ESR] = 0x00000000; - } - break; - case POWERPC_MMU_MPC8xx: - /* XXX: TODO */ - cpu_abort(cs, "MPC8xx MMU model is not implemented\n"); - break; - case POWERPC_MMU_BOOKE206: - booke206_update_mas_tlb_miss(env, address, access_type, mmu_idx); - /* fall through */ - case POWERPC_MMU_BOOKE: - cs->exception_index = POWERPC_EXCP_DTLB; - env->error_code = 0; - env->spr[SPR_BOOKE_DEAR] = address; - env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx, access_type); - return -1; - case POWERPC_MMU_REAL: - cpu_abort(cs, "PowerPC in real mode should never raise " - "any MMU exceptions\n"); - return -1; - default: - cpu_abort(cs, "Unknown or invalid MMU model\n"); - return -1; - } - break; - case -2: - /* Access rights violation */ - cs->exception_index = POWERPC_EXCP_DSI; - env->error_code = 0; - if (env->mmu_model == POWERPC_MMU_SOFT_4xx - || env->mmu_model == POWERPC_MMU_SOFT_4xx_Z) { - env->spr[SPR_40x_DEAR] = address; - if (access_type == MMU_DATA_STORE) { - env->spr[SPR_40x_ESR] |= 0x00800000; - } - } else if ((env->mmu_model == POWERPC_MMU_BOOKE) || - (env->mmu_model == POWERPC_MMU_BOOKE206)) { - env->spr[SPR_BOOKE_DEAR] = address; - env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx, access_type); - } else { - env->spr[SPR_DAR] = address; - if (access_type == MMU_DATA_STORE) { - env->spr[SPR_DSISR] = 0x0A000000; - } else { - env->spr[SPR_DSISR] = 0x08000000; - } - } - break; - case -4: - /* Direct store exception */ - switch (type) { - case ACCESS_FLOAT: - /* Floating point load/store */ - cs->exception_index = POWERPC_EXCP_ALIGN; - env->error_code = POWERPC_EXCP_ALIGN_FP; - env->spr[SPR_DAR] = address; - break; - case ACCESS_RES: - /* lwarx, ldarx or stwcx. */ - cs->exception_index = POWERPC_EXCP_DSI; - env->error_code = 0; - env->spr[SPR_DAR] = address; - if (access_type == MMU_DATA_STORE) { - env->spr[SPR_DSISR] = 0x06000000; - } else { - env->spr[SPR_DSISR] = 0x04000000; - } - break; - case ACCESS_EXT: - /* eciwx or ecowx */ - cs->exception_index = POWERPC_EXCP_DSI; - env->error_code = 0; - env->spr[SPR_DAR] = address; - if (access_type == MMU_DATA_STORE) { - env->spr[SPR_DSISR] = 0x06100000; - } else { - env->spr[SPR_DSISR] = 0x04100000; - } - break; - default: - printf("DSI: invalid exception (%d)\n", ret); - cs->exception_index = POWERPC_EXCP_PROGRAM; - env->error_code = - POWERPC_EXCP_INVAL | POWERPC_EXCP_INVAL_INVAL; - env->spr[SPR_DAR] = address; - break; + for (i = 0; i < BOOKE206_MAX_TLBN; i++) { + if (flags & (1 << i)) { + tlb_size = booke206_tlb_size(env, i); + for (j = 0; j < tlb_size; j++) { + if (!check_iprot || !(tlb[j].mas1 & MAS1_IPROT)) { + tlb[j].mas1 &= ~MAS1_VALID; } - break; } } - ret = 1; + tlb += booke206_tlb_size(env, i); } - return ret; + tlb_flush(env_cpu(env)); } -#ifdef CONFIG_TCG + /*****************************************************************************/ /* BATs management */ #if !defined(FLUSH_ALL_TLBS) @@ -1952,9 +372,7 @@ void helper_store_601_batl(CPUPPCState *env, uint32_t nr, target_ulong value) #endif } } -#endif -#ifdef CONFIG_TCG /*****************************************************************************/ /* TLB management */ void ppc_tlb_invalidate_all(CPUPPCState *env) @@ -1998,9 +416,7 @@ void ppc_tlb_invalidate_all(CPUPPCState *env) break; } } -#endif -#ifdef CONFIG_TCG void ppc_tlb_invalidate_one(CPUPPCState *env, target_ulong addr) { #if !defined(FLUSH_ALL_TLBS) @@ -2942,30 +1358,6 @@ void helper_check_tlb_flush_global(CPUPPCState *env) { check_tlb_flush(env, true); } -#endif /* CONFIG_TCG */ /*****************************************************************************/ -bool ppc_cpu_tlb_fill(CPUState *cs, vaddr addr, int size, - MMUAccessType access_type, int mmu_idx, - bool probe, uintptr_t retaddr) -{ - PowerPCCPU *cpu = POWERPC_CPU(cs); - PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cs); - CPUPPCState *env = &cpu->env; - int ret; - - if (pcc->handle_mmu_fault) { - ret = pcc->handle_mmu_fault(cpu, addr, access_type, mmu_idx); - } else { - ret = cpu_ppc_handle_mmu_fault(env, addr, access_type, mmu_idx); - } - if (unlikely(ret != 0)) { - if (probe) { - return false; - } - raise_exception_err_ra(env, cs->exception_index, env->error_code, - retaddr); - } - return true; -}
Moved functions in mmu_helper.c that should be compiled in build to mmu_common.c, moved declaration of functions that both files use to cpu.h and moved struct declarations and inline functions needed by both to target/ppc/internal.h. Updated meson.build to compile the new file. Signed-off-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br> --- Had to turn a few functions non static as it was used by both mmu_common.c and mmu_helper.c. Added the declaration of mmu_ctx_t to cpu.h so functions there can reference it and added the definition to internal.h so functions in both mmu_* files can access it. And maybe the tlb functions should be declared in internal.h instead of cpu.h. --- target/ppc/cpu.h | 35 + target/ppc/internal.h | 26 + target/ppc/meson.build | 6 +- target/ppc/mmu_common.c | 1606 ++++++++++++++++++++++++++++++++++ target/ppc/mmu_helper.c | 1814 +++------------------------------------ 5 files changed, 1774 insertions(+), 1713 deletions(-) create mode 100644 target/ppc/mmu_common.c