[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH 13/72] ppc: Move MMU helpers from helper.c to mmu_he
|
From: |
Alexander Graf |
|
Subject: |
[Qemu-devel] [PATCH 13/72] ppc: Move MMU helpers from helper.c to mmu_helper.c |
|
Date: |
Sun, 24 Jun 2012 01:06:37 +0200 |
From: Blue Swirl <address@hidden>
Move more MMU helpers from helper.c to mmu_helper.c.
Signed-off-by: Blue Swirl <address@hidden>
Signed-off-by: Alexander Graf <address@hidden>
Signed-off-by: Andreas Färber <address@hidden>
[update to current helper.c state]
Signed-off-by: Alexander Graf <address@hidden>
---
target-ppc/helper.c | 2475 -----------------------------------------------
target-ppc/mmu_helper.c | 2471 ++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 2471 insertions(+), 2475 deletions(-)
diff --git a/target-ppc/helper.c b/target-ppc/helper.c
index 17e72a9..24d109d 100644
--- a/target-ppc/helper.c
+++ b/target-ppc/helper.c
@@ -23,2483 +23,8 @@
#include "kvm_ppc.h"
#include "cpus.h"
-//#define DEBUG_MMU
-//#define DEBUG_BATS
-//#define DEBUG_SLB
-//#define DEBUG_SOFTWARE_TLB
-//#define DUMP_PAGE_TABLES
-//#define FLUSH_ALL_TLBS
-
-#ifdef DEBUG_MMU
-# define LOG_MMU(...) qemu_log(__VA_ARGS__)
-# define LOG_MMU_STATE(env) log_cpu_state((env), 0)
-#else
-# define LOG_MMU(...) do { } while (0)
-# define LOG_MMU_STATE(...) do { } while (0)
-#endif
-
-
-#ifdef DEBUG_SOFTWARE_TLB
-# define LOG_SWTLB(...) qemu_log(__VA_ARGS__)
-#else
-# define LOG_SWTLB(...) do { } while (0)
-#endif
-
-#ifdef DEBUG_BATS
-# define LOG_BATS(...) qemu_log(__VA_ARGS__)
-#else
-# define LOG_BATS(...) do { } while (0)
-#endif
-
-#ifdef DEBUG_SLB
-# define LOG_SLB(...) qemu_log(__VA_ARGS__)
-#else
-# define LOG_SLB(...) do { } while (0)
-#endif
-
-/*****************************************************************************/
-/* PowerPC MMU emulation */
-
-#if defined(CONFIG_USER_ONLY)
-int cpu_ppc_handle_mmu_fault(CPUPPCState *env, target_ulong address, int rw,
- int mmu_idx)
-{
- int exception, error_code;
-
- if (rw == 2) {
- exception = POWERPC_EXCP_ISI;
- error_code = 0x40000000;
- } else {
- exception = POWERPC_EXCP_DSI;
- error_code = 0x40000000;
- if (rw) {
- error_code |= 0x02000000;
- }
- env->spr[SPR_DAR] = address;
- env->spr[SPR_DSISR] = error_code;
- }
- env->exception_index = exception;
- env->error_code = error_code;
-
- return 1;
-}
-
-#else
-/* 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;
-}
-
-#if defined(TARGET_PPC64)
-static inline int pte64_is_valid(target_ulong pte0)
-{
- return pte0 & 0x0000000000000001ULL ? 1 : 0;
-}
-
-static inline void pte64_invalidate(target_ulong *pte0)
-{
- *pte0 &= ~0x0000000000000001ULL;
-}
-#endif
-
-#define PTE_PTEM_MASK 0x7FFFFFBF
-#define PTE_CHECK_MASK (TARGET_PAGE_MASK | 0x7B)
-#if defined(TARGET_PPC64)
-#define PTE64_PTEM_MASK 0xFFFFFFFFFFFFFF80ULL
-#define PTE64_CHECK_MASK (TARGET_PAGE_MASK | 0x7F)
-#endif
-
-static inline int pp_check(int key, int pp, int nx)
-{
- int access;
-
- /* Compute access rights */
- /* When pp is 3/7, the result is undefined. Set it to noaccess */
- access = 0;
- if (key == 0) {
- switch (pp) {
- case 0x0:
- case 0x1:
- case 0x2:
- access |= PAGE_WRITE;
- /* No break here */
- case 0x3:
- case 0x6:
- access |= PAGE_READ;
- break;
- }
- } else {
- switch (pp) {
- case 0x0:
- case 0x6:
- 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 inline int check_prot(int prot, int rw, int access_type)
-{
- int ret;
-
- if (access_type == ACCESS_CODE) {
- if (prot & PAGE_EXEC) {
- ret = 0;
- } else {
- ret = -2;
- }
- } else if (rw) {
- if (prot & PAGE_WRITE) {
- ret = 0;
- } else {
- ret = -2;
- }
- } else {
- if (prot & PAGE_READ) {
- ret = 0;
- } else {
- ret = -2;
- }
- }
-
- return ret;
-}
-
-static inline int pte_check(mmu_ctx_t *ctx, int is_64b, target_ulong pte0,
- target_ulong pte1, int h, int rw, int type)
-{
- target_ulong ptem, mmask;
- int access, ret, pteh, ptev, pp;
-
- ret = -1;
- /* Check validity and table match */
-#if defined(TARGET_PPC64)
- if (is_64b) {
- ptev = pte64_is_valid(pte0);
- pteh = (pte0 >> 1) & 1;
- } else
-#endif
- {
- ptev = pte_is_valid(pte0);
- pteh = (pte0 >> 6) & 1;
- }
- if (ptev && h == pteh) {
- /* Check vsid & api */
-#if defined(TARGET_PPC64)
- if (is_64b) {
- ptem = pte0 & PTE64_PTEM_MASK;
- mmask = PTE64_CHECK_MASK;
- pp = (pte1 & 0x00000003) | ((pte1 >> 61) & 0x00000004);
- ctx->nx = (pte1 >> 2) & 1; /* No execute bit */
- ctx->nx |= (pte1 >> 3) & 1; /* Guarded bit */
- } else
-#endif
- {
- ptem = pte0 & PTE_PTEM_MASK;
- mmask = PTE_CHECK_MASK;
- pp = pte1 & 0x00000003;
- }
- if (ptem == ctx->ptem) {
- if (ctx->raddr != (target_phys_addr_t)-1ULL) {
- /* all matches should have equal RPN, WIMG & PP */
- if ((ctx->raddr & mmask) != (pte1 & mmask)) {
- qemu_log("Bad RPN/WIMG/PP\n");
- return -3;
- }
- }
- /* Compute access rights */
- access = pp_check(ctx->key, pp, ctx->nx);
- /* Keep the matching PTE informations */
- ctx->raddr = pte1;
- ctx->prot = access;
- ret = check_prot(ctx->prot, rw, type);
- if (ret == 0) {
- /* Access granted */
- LOG_MMU("PTE access granted !\n");
- } else {
- /* Access right violation */
- LOG_MMU("PTE access rejected\n");
- }
- }
- }
-
- return ret;
-}
-
-static inline int pte32_check(mmu_ctx_t *ctx, target_ulong pte0,
- target_ulong pte1, int h, int rw, int type)
-{
- return pte_check(ctx, 0, pte0, pte1, h, rw, type);
-}
-
-#if defined(TARGET_PPC64)
-static inline int pte64_check(mmu_ctx_t *ctx, target_ulong pte0,
- target_ulong pte1, int h, int rw, int type)
-{
- return pte_check(ctx, 1, pte0, pte1, h, rw, type);
-}
-#endif
-
-static inline int pte_update_flags(mmu_ctx_t *ctx, target_ulong *pte1p,
- int ret, int rw)
-{
- int store = 0;
-
- /* Update page flags */
- if (!(*pte1p & 0x00000100)) {
- /* Update accessed flag */
- *pte1p |= 0x00000100;
- store = 1;
- }
- if (!(*pte1p & 0x00000080)) {
- if (rw == 1 && 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, 1);
-}
-
-static inline void ppc6xx_tlb_invalidate_virt2(CPUPPCState *env,
- target_ulong eaddr,
- int is_code, int match_epn)
-{
-#if !defined(FLUSH_ALL_TLBS)
- 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(env, 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);
-}
-
-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;
-}
-
-static inline int ppc6xx_tlb_check(CPUPPCState *env, mmu_ctx_t *ctx,
- target_ulong eaddr, int rw, int 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 == ACCESS_CODE ? 1 : 0);
- 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,
- rw ? 'S' : 'L', access_type == ACCESS_CODE ? 'I' : 'D');
- switch (pte32_check(ctx, tlb->pte0, tlb->pte1, 0, rw, 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, rw);
- }
-
- 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 inline void bat_601_size_prot(CPUPPCState *env, target_ulong *blp,
- int *validp, int *protp,
- target_ulong *BATu, target_ulong *BATl)
-{
- target_ulong bl;
- int key, pp, valid, prot;
-
- bl = (*BATl & 0x0000003F) << 17;
- LOG_BATS("b %02x ==> bl " TARGET_FMT_lx " msk " TARGET_FMT_lx "\n",
- (uint8_t)(*BATl & 0x0000003F), bl, ~bl);
- prot = 0;
- valid = (*BATl >> 6) & 1;
- if (valid) {
- pp = *BATu & 0x00000003;
- if (msr_pr == 0) {
- key = (*BATu >> 3) & 1;
- } else {
- key = (*BATu >> 2) & 1;
- }
- prot = pp_check(key, pp, 0);
- }
- *blp = bl;
- *validp = valid;
- *protp = prot;
-}
-
-static inline int get_bat(CPUPPCState *env, mmu_ctx_t *ctx,
- target_ulong virtual, int rw, int type)
-{
- target_ulong *BATlt, *BATut, *BATu, *BATl;
- target_ulong BEPIl, BEPIu, bl;
- int i, valid, prot;
- int ret = -1;
-
- LOG_BATS("%s: %cBAT v " TARGET_FMT_lx "\n", __func__,
- type == ACCESS_CODE ? 'I' : 'D', virtual);
- 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;
- if (unlikely(env->mmu_model == POWERPC_MMU_601)) {
- bat_601_size_prot(env, &bl, &valid, &prot, BATu, BATl);
- } else {
- 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__,
- type == ACCESS_CODE ? '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, rw, 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__, type == ACCESS_CODE ? 'I' : 'D', i, virtual,
- *BATu, *BATl, BEPIu, BEPIl, bl);
- }
- }
-#endif
- }
- /* No hit */
- return ret;
-}
-
-static inline target_phys_addr_t get_pteg_offset(CPUPPCState *env,
- target_phys_addr_t hash,
- int pte_size)
-{
- return (hash * pte_size * 8) & env->htab_mask;
-}
-
-/* PTE table lookup */
-static inline int find_pte2(CPUPPCState *env, mmu_ctx_t *ctx, int is_64b, int
h,
- int rw, int type, int target_page_bits)
-{
- target_phys_addr_t pteg_off;
- target_ulong pte0, pte1;
- int i, good = -1;
- int ret, r;
-
- ret = -1; /* No entry found */
- pteg_off = get_pteg_offset(env, ctx->hash[h],
- is_64b ? HASH_PTE_SIZE_64 : HASH_PTE_SIZE_32);
- for (i = 0; i < 8; i++) {
-#if defined(TARGET_PPC64)
- if (is_64b) {
- if (env->external_htab) {
- pte0 = ldq_p(env->external_htab + pteg_off + (i * 16));
- pte1 = ldq_p(env->external_htab + pteg_off + (i * 16) + 8);
- } else {
- pte0 = ldq_phys(env->htab_base + pteg_off + (i * 16));
- pte1 = ldq_phys(env->htab_base + pteg_off + (i * 16) + 8);
- }
-
- r = pte64_check(ctx, pte0, pte1, h, rw, type);
- LOG_MMU("Load pte from " TARGET_FMT_lx " => " TARGET_FMT_lx " "
- TARGET_FMT_lx " %d %d %d " TARGET_FMT_lx "\n",
- pteg_off + (i * 16), pte0, pte1, (int)(pte0 & 1), h,
- (int)((pte0 >> 1) & 1), ctx->ptem);
- } else
-#endif
- {
- if (env->external_htab) {
- pte0 = ldl_p(env->external_htab + pteg_off + (i * 8));
- pte1 = ldl_p(env->external_htab + pteg_off + (i * 8) + 4);
- } else {
- pte0 = ldl_phys(env->htab_base + pteg_off + (i * 8));
- pte1 = ldl_phys(env->htab_base + pteg_off + (i * 8) + 4);
- }
- r = pte32_check(ctx, pte0, pte1, h, rw, type);
- LOG_MMU("Load pte from " TARGET_FMT_lx " => " TARGET_FMT_lx " "
- TARGET_FMT_lx " %d %d %d " TARGET_FMT_lx "\n",
- pteg_off + (i * 8), pte0, pte1, (int)(pte0 >> 31), h,
- (int)((pte0 >> 6) & 1), ctx->ptem);
- }
- switch (r) {
- case -3:
- /* PTE inconsistency */
- return -1;
- case -2:
- /* Access violation */
- ret = -2;
- good = i;
- break;
- case -1:
- default:
- /* No PTE match */
- break;
- case 0:
- /* access granted */
- /* XXX: we should go on looping to check all PTEs consistency
- * but if we can speed-up the whole thing as the
- * result would be undefined if PTEs are not consistent.
- */
- ret = 0;
- good = i;
- goto done;
- }
- }
- if (good != -1) {
- done:
- LOG_MMU("found PTE at addr " TARGET_FMT_lx " prot=%01x ret=%d\n",
- ctx->raddr, ctx->prot, ret);
- /* Update page flags */
- pte1 = ctx->raddr;
- if (pte_update_flags(ctx, &pte1, ret, rw) == 1) {
-#if defined(TARGET_PPC64)
- if (is_64b) {
- if (env->external_htab) {
- stq_p(env->external_htab + pteg_off + (good * 16) + 8,
- pte1);
- } else {
- stq_phys_notdirty(env->htab_base + pteg_off +
- (good * 16) + 8, pte1);
- }
- } else
-#endif
- {
- if (env->external_htab) {
- stl_p(env->external_htab + pteg_off + (good * 8) + 4,
- pte1);
- } else {
- stl_phys_notdirty(env->htab_base + pteg_off +
- (good * 8) + 4, pte1);
- }
- }
- }
- }
-
- /* We have a TLB that saves 4K pages, so let's
- * split a huge page to 4k chunks */
- if (target_page_bits != TARGET_PAGE_BITS) {
- ctx->raddr |= (ctx->eaddr & ((1 << target_page_bits) - 1))
- & TARGET_PAGE_MASK;
- }
- return ret;
-}
-
-static inline int find_pte(CPUPPCState *env, mmu_ctx_t *ctx, int h, int rw,
- int type, int target_page_bits)
-{
-#if defined(TARGET_PPC64)
- if (env->mmu_model & POWERPC_MMU_64) {
- return find_pte2(env, ctx, 1, h, rw, type, target_page_bits);
- }
-#endif
-
- return find_pte2(env, ctx, 0, h, rw, type, target_page_bits);
-}
-
-#if defined(TARGET_PPC64)
-static inline ppc_slb_t *slb_lookup(CPUPPCState *env, target_ulong eaddr)
-{
- uint64_t esid_256M, esid_1T;
- int n;
-
- LOG_SLB("%s: eaddr " TARGET_FMT_lx "\n", __func__, eaddr);
-
- esid_256M = (eaddr & SEGMENT_MASK_256M) | SLB_ESID_V;
- esid_1T = (eaddr & SEGMENT_MASK_1T) | SLB_ESID_V;
-
- for (n = 0; n < env->slb_nr; n++) {
- ppc_slb_t *slb = &env->slb[n];
-
- LOG_SLB("%s: slot %d %016" PRIx64 " %016"
- PRIx64 "\n", __func__, n, slb->esid, slb->vsid);
- /* We check for 1T matches on all MMUs here - if the MMU
- * doesn't have 1T segment support, we will have prevented 1T
- * entries from being inserted in the slbmte code. */
- if (((slb->esid == esid_256M) &&
- ((slb->vsid & SLB_VSID_B) == SLB_VSID_B_256M))
- || ((slb->esid == esid_1T) &&
- ((slb->vsid & SLB_VSID_B) == SLB_VSID_B_1T))) {
- return slb;
- }
- }
-
- return NULL;
-}
-
-void ppc_slb_invalidate_all(CPUPPCState *env)
-{
- int n, do_invalidate;
-
- do_invalidate = 0;
- /* XXX: Warning: slbia never invalidates the first segment */
- for (n = 1; n < env->slb_nr; n++) {
- ppc_slb_t *slb = &env->slb[n];
-
- if (slb->esid & SLB_ESID_V) {
- slb->esid &= ~SLB_ESID_V;
- /* XXX: given the fact that segment size is 256 MB or 1TB,
- * and we still don't have a tlb_flush_mask(env, n, mask)
- * in QEMU, we just invalidate all TLBs
- */
- do_invalidate = 1;
- }
- }
- if (do_invalidate) {
- tlb_flush(env, 1);
- }
-}
-
-void ppc_slb_invalidate_one(CPUPPCState *env, uint64_t T0)
-{
- ppc_slb_t *slb;
-
- slb = slb_lookup(env, T0);
- if (!slb) {
- return;
- }
-
- if (slb->esid & SLB_ESID_V) {
- slb->esid &= ~SLB_ESID_V;
-
- /* XXX: given the fact that segment size is 256 MB or 1TB,
- * and we still don't have a tlb_flush_mask(env, n, mask)
- * in QEMU, we just invalidate all TLBs
- */
- tlb_flush(env, 1);
- }
-}
-
-int ppc_store_slb(CPUPPCState *env, target_ulong rb, target_ulong rs)
-{
- int slot = rb & 0xfff;
- ppc_slb_t *slb = &env->slb[slot];
-
- if (rb & (0x1000 - env->slb_nr)) {
- return -1; /* Reserved bits set or slot too high */
- }
- if (rs & (SLB_VSID_B & ~SLB_VSID_B_1T)) {
- return -1; /* Bad segment size */
- }
- if ((rs & SLB_VSID_B) && !(env->mmu_model & POWERPC_MMU_1TSEG)) {
- return -1; /* 1T segment on MMU that doesn't support it */
- }
-
- /* Mask out the slot number as we store the entry */
- slb->esid = rb & (SLB_ESID_ESID | SLB_ESID_V);
- slb->vsid = rs;
-
- LOG_SLB("%s: %d " TARGET_FMT_lx " - " TARGET_FMT_lx " => %016" PRIx64
- " %016" PRIx64 "\n", __func__, slot, rb, rs,
- slb->esid, slb->vsid);
-
- return 0;
-}
-
-int ppc_load_slb_esid(CPUPPCState *env, target_ulong rb, target_ulong *rt)
-{
- int slot = rb & 0xfff;
- ppc_slb_t *slb = &env->slb[slot];
-
- if (slot >= env->slb_nr) {
- return -1;
- }
-
- *rt = slb->esid;
- return 0;
-}
-
-int ppc_load_slb_vsid(CPUPPCState *env, target_ulong rb, target_ulong *rt)
-{
- int slot = rb & 0xfff;
- ppc_slb_t *slb = &env->slb[slot];
-
- if (slot >= env->slb_nr) {
- return -1;
- }
-
- *rt = slb->vsid;
- return 0;
-}
-#endif /* defined(TARGET_PPC64) */
-
-/* Perform segment based translation */
-static inline int get_segment(CPUPPCState *env, mmu_ctx_t *ctx,
- target_ulong eaddr, int rw, int type)
-{
- target_phys_addr_t hash;
- target_ulong vsid;
- int ds, pr, target_page_bits;
- int ret, ret2;
-
- pr = msr_pr;
- ctx->eaddr = eaddr;
-#if defined(TARGET_PPC64)
- if (env->mmu_model & POWERPC_MMU_64) {
- ppc_slb_t *slb;
- target_ulong pageaddr;
- int segment_bits;
-
- LOG_MMU("Check SLBs\n");
- slb = slb_lookup(env, eaddr);
- if (!slb) {
- return -5;
- }
-
- if (slb->vsid & SLB_VSID_B) {
- vsid = (slb->vsid & SLB_VSID_VSID) >> SLB_VSID_SHIFT_1T;
- segment_bits = 40;
- } else {
- vsid = (slb->vsid & SLB_VSID_VSID) >> SLB_VSID_SHIFT;
- segment_bits = 28;
- }
-
- target_page_bits = (slb->vsid & SLB_VSID_L)
- ? TARGET_PAGE_BITS_16M : TARGET_PAGE_BITS;
- ctx->key = !!(pr ? (slb->vsid & SLB_VSID_KP)
- : (slb->vsid & SLB_VSID_KS));
- ds = 0;
- ctx->nx = !!(slb->vsid & SLB_VSID_N);
-
- pageaddr = eaddr & ((1ULL << segment_bits)
- - (1ULL << target_page_bits));
- if (slb->vsid & SLB_VSID_B) {
- hash = vsid ^ (vsid << 25) ^ (pageaddr >> target_page_bits);
- } else {
- hash = vsid ^ (pageaddr >> target_page_bits);
- }
- /* Only 5 bits of the page index are used in the AVPN */
- ctx->ptem = (slb->vsid & SLB_VSID_PTEM) |
- ((pageaddr >> 16) & ((1ULL << segment_bits) - 0x80));
- } else
-#endif /* defined(TARGET_PPC64) */
- {
- target_ulong sr, pgidx;
-
- 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;
- 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, rw, type);
- pgidx = (eaddr & ~SEGMENT_MASK_256M) >> target_page_bits;
- hash = vsid ^ pgidx;
- ctx->ptem = (vsid << 7) | (pgidx >> 10);
- }
- 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 */
- LOG_MMU("htab_base " TARGET_FMT_plx " htab_mask " TARGET_FMT_plx
- " hash " TARGET_FMT_plx "\n",
- env->htab_base, env->htab_mask, hash);
- ctx->hash[0] = hash;
- ctx->hash[1] = ~hash;
-
- /* Initialize real address with an invalid value */
- ctx->raddr = (target_phys_addr_t)-1ULL;
- if (unlikely(env->mmu_model == POWERPC_MMU_SOFT_6xx ||
- env->mmu_model == POWERPC_MMU_SOFT_74xx)) {
- /* Software TLB search */
- ret = ppc6xx_tlb_check(env, ctx, eaddr, rw, type);
- } else {
- LOG_MMU("0 htab=" TARGET_FMT_plx "/" TARGET_FMT_plx
- " vsid=" TARGET_FMT_lx " ptem=" TARGET_FMT_lx
- " hash=" TARGET_FMT_plx "\n",
- env->htab_base, env->htab_mask, vsid, ctx->ptem,
- ctx->hash[0]);
- /* Primary table lookup */
- ret = find_pte(env, ctx, 0, rw, type, target_page_bits);
- if (ret < 0) {
- /* Secondary table lookup */
- if (eaddr != 0xEFFFFFFF) {
- LOG_MMU("1 htab=" TARGET_FMT_plx "/" TARGET_FMT_plx
- " vsid=" TARGET_FMT_lx " api=" TARGET_FMT_lx
- " hash=" TARGET_FMT_plx "\n", env->htab_base,
- env->htab_mask, vsid, ctx->ptem, ctx->hash[1]);
- }
- ret2 = find_pte(env, ctx, 1, rw, type,
- target_page_bits);
- if (ret2 != -1) {
- ret = ret2;
- }
- }
- }
-#if defined(DUMP_PAGE_TABLES)
- if (qemu_log_enabled()) {
- target_phys_addr_t curaddr;
- uint32_t a0, a1, a2, a3;
-
- qemu_log("Page table: " TARGET_FMT_plx " len " TARGET_FMT_plx
- "\n", sdr, mask + 0x80);
- for (curaddr = sdr; curaddr < (sdr + mask + 0x80);
- curaddr += 16) {
- a0 = ldl_phys(curaddr);
- a1 = ldl_phys(curaddr + 4);
- a2 = ldl_phys(curaddr + 8);
- a3 = ldl_phys(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 {
- LOG_MMU("No access allowed\n");
- ret = -3;
- }
- } else {
- target_ulong sr;
-
- 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("ERROR: instruction should not need "
- "address translation\n");
- return -4;
- }
- if ((rw == 1 || ctx->key != 1) && (rw == 0 || 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,
- target_phys_addr_t *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 (TARGET_PHYS_ADDR_BITS >= 36)
- if (ext) {
- /* Extend the physical address to 36 bits */
- *raddrp |= (target_phys_addr_t)(tlb->RPN & 0xF) << 32;
- }
-#endif
-
- return 0;
-}
-
-/* Generic TLB search function for PowerPC embedded implementations */
-int ppcemb_tlb_search(CPUPPCState *env, target_ulong address, uint32_t pid)
-{
- ppcemb_tlb_t *tlb;
- target_phys_addr_t 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;
-}
-
-/* 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, 1);
-}
-
-static inline void ppc4xx_tlb_invalidate_virt(CPUPPCState *env,
- target_ulong eaddr, uint32_t pid)
-{
-#if !defined(FLUSH_ALL_TLBS)
- ppcemb_tlb_t *tlb;
- target_phys_addr_t raddr;
- target_ulong page, end;
- int i;
-
- for (i = 0; i < env->nb_tlb; i++) {
- tlb = &env->tlb.tlbe[i];
- if (ppcemb_tlb_check(env, tlb, &raddr, eaddr, pid, 0, i) == 0) {
- end = tlb->EPN + tlb->size;
- for (page = tlb->EPN; page < end; page += TARGET_PAGE_SIZE) {
- tlb_flush_page(env, page);
- }
- tlb->prot &= ~PAGE_VALID;
- break;
- }
- }
-#else
- ppc4xx_tlb_invalidate_all(env);
-#endif
-}
-
-static int mmu40x_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
- target_ulong address, int rw,
- int access_type)
-{
- ppcemb_tlb_t *tlb;
- target_phys_addr_t raddr;
- int i, ret, zsel, zpr, pr;
-
- ret = -1;
- raddr = (target_phys_addr_t)-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 rw %d attr %08x\n",
- __func__, i, zsel, zpr, rw, tlb->attr);
- /* Check execute enable bit */
- switch (zpr) {
- case 0x2:
- if (pr != 0) {
- goto check_perms;
- }
- /* No break here */
- 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;
- }
- /* No break here */
- case 0x1:
- check_perms:
- /* Check from TLB entry */
- ctx->prot = tlb->prot;
- ret = check_prot(ctx->prot, rw, 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, "Little-endian regions are not supported by now\n");
- }
- env->spr[SPR_405_SLER] = val;
-}
-
-static inline int mmubooke_check_tlb(CPUPPCState *env, ppcemb_tlb_t *tlb,
- target_phys_addr_t *raddr, int *prot,
- target_ulong address, int rw,
- int access_type, int i)
-{
- int ret, 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 == ACCESS_CODE) {
- if (msr_ir != (tlb->attr & 1)) {
- LOG_SWTLB("%s: AS doesn't match\n", __func__);
- return -1;
- }
-
- *prot = prot2;
- if (prot2 & PAGE_EXEC) {
- LOG_SWTLB("%s: good TLB!\n", __func__);
- return 0;
- }
-
- LOG_SWTLB("%s: no PAGE_EXEC: %x\n", __func__, prot2);
- ret = -3;
- } else {
- if (msr_dr != (tlb->attr & 1)) {
- LOG_SWTLB("%s: AS doesn't match\n", __func__);
- return -1;
- }
-
- *prot = prot2;
- if ((!rw && prot2 & PAGE_READ) || (rw && (prot2 & PAGE_WRITE))) {
- LOG_SWTLB("%s: found TLB!\n", __func__);
- return 0;
- }
-
- LOG_SWTLB("%s: PAGE_READ/WRITE doesn't match: %x\n", __func__, prot2);
- ret = -2;
- }
-
- return ret;
-}
-
-static int mmubooke_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
- target_ulong address, int rw,
- int access_type)
-{
- ppcemb_tlb_t *tlb;
- target_phys_addr_t raddr;
- int i, ret;
-
- ret = -1;
- raddr = (target_phys_addr_t)-1ULL;
- for (i = 0; i < env->nb_tlb; i++) {
- tlb = &env->tlb.tlbe[i];
- ret = mmubooke_check_tlb(env, tlb, &raddr, &ctx->prot, address, rw,
- access_type, i);
- if (!ret) {
- 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;
-}
-
-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, 1);
-}
-
-target_phys_addr_t 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,
- target_phys_addr_t *raddrp,
- target_ulong address, uint32_t pid)
-{
- target_ulong mask;
- uint32_t tlb_pid;
-
- /* 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" TARGET_FMT_lx " MAS7_3=0x%" PRIx64 "
MAS8=%x\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 int mmubooke206_check_tlb(CPUPPCState *env, ppcmas_tlb_t *tlb,
- target_phys_addr_t *raddr, int *prot,
- target_ulong address, int rw,
- int access_type)
-{
- int ret;
- int prot2 = 0;
-
- 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;
- }
-
- LOG_SWTLB("%s: TLB entry not found\n", __func__);
- return -1;
-
-found_tlb:
-
- if (msr_pr != 0) {
- 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 == ACCESS_CODE) {
- if (msr_ir != ((tlb->mas1 & MAS1_TS) >> MAS1_TS_SHIFT)) {
- LOG_SWTLB("%s: AS doesn't match\n", __func__);
- return -1;
- }
-
- *prot = prot2;
- if (prot2 & PAGE_EXEC) {
- LOG_SWTLB("%s: good TLB!\n", __func__);
- return 0;
- }
-
- LOG_SWTLB("%s: no PAGE_EXEC: %x\n", __func__, prot2);
- ret = -3;
- } else {
- if (msr_dr != ((tlb->mas1 & MAS1_TS) >> MAS1_TS_SHIFT)) {
- LOG_SWTLB("%s: AS doesn't match\n", __func__);
- return -1;
- }
-
- *prot = prot2;
- if ((!rw && prot2 & PAGE_READ) || (rw && (prot2 & PAGE_WRITE))) {
- LOG_SWTLB("%s: found TLB!\n", __func__);
- return 0;
- }
-
- LOG_SWTLB("%s: PAGE_READ/WRITE doesn't match: %x\n", __func__, prot2);
- ret = -2;
- }
-
- return ret;
-}
-
-static int mmubooke206_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
- target_ulong address, int rw,
- int access_type)
-{
- ppcmas_tlb_t *tlb;
- target_phys_addr_t raddr;
- int i, j, ret;
-
- ret = -1;
- raddr = (target_phys_addr_t)-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,
- rw, access_type);
- 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(FILE *f, fprintf_function cpu_fprintf,
- CPUPPCState *env)
-{
- ppcemb_tlb_t *entry;
- int i;
-
- if (kvm_enabled() && !env->kvm_sw_tlb) {
- cpu_fprintf(f, "Cannot access KVM TLB\n");
- return;
- }
-
- cpu_fprintf(f, "\nTLB:\n");
- cpu_fprintf(f, "Effective Physical Size PID Prot "
- "Attr\n");
-
- entry = &env->tlb.tlbe[0];
- for (i = 0; i < env->nb_tlb; i++, entry++) {
- target_phys_addr_t 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;
-#if (TARGET_PHYS_ADDR_BITS >= 36)
- /* Extend the physical address to 36 bits */
- pa |= (target_phys_addr_t)(entry->RPN & 0xF) << 32;
-#endif
- size /= 1024;
- if (size >= 1024) {
- snprintf(size_buf, sizeof(size_buf), "%3" PRId64 "M", size / 1024);
- } else {
- snprintf(size_buf, sizeof(size_buf), "%3" PRId64 "k", size);
- }
- cpu_fprintf(f, "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(FILE *f, fprintf_function cpu_fprintf,
- CPUPPCState *env, int tlbn, int offset,
- int tlbsize)
-{
- ppcmas_tlb_t *entry;
- int i;
-
- cpu_fprintf(f, "\nTLB%d:\n", tlbn);
- cpu_fprintf(f, "Effective Physical Size TID TS SRWX"
- " URWX WIMGE U0123\n");
-
- entry = &env->tlb.tlbm[offset];
- for (i = 0; i < tlbsize; i++, entry++) {
- target_phys_addr_t 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);
-
- cpu_fprintf(f, "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(FILE *f, fprintf_function cpu_fprintf,
- CPUPPCState *env)
-{
- int offset = 0;
- int i;
-
- if (kvm_enabled() && !env->kvm_sw_tlb) {
- cpu_fprintf(f, "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(f, cpu_fprintf, env, i, offset, size);
- offset += size;
- }
-}
-
-#if defined(TARGET_PPC64)
-static void mmubooks_dump_mmu(FILE *f, fprintf_function cpu_fprintf,
- CPUPPCState *env)
-{
- int i;
- uint64_t slbe, slbv;
-
- cpu_synchronize_state(env);
-
- cpu_fprintf(f, "SLB\tESID\t\t\tVSID\n");
- for (i = 0; i < env->slb_nr; i++) {
- slbe = env->slb[i].esid;
- slbv = env->slb[i].vsid;
- if (slbe == 0 && slbv == 0) {
- continue;
- }
- cpu_fprintf(f, "%d\t0x%016" PRIx64 "\t0x%016" PRIx64 "\n",
- i, slbe, slbv);
- }
-}
-#endif
-
-void dump_mmu(FILE *f, fprintf_function cpu_fprintf, CPUPPCState *env)
-{
- switch (env->mmu_model) {
- case POWERPC_MMU_BOOKE:
- mmubooke_dump_mmu(f, cpu_fprintf, env);
- break;
- case POWERPC_MMU_BOOKE206:
- mmubooke206_dump_mmu(f, cpu_fprintf, env);
- break;
-#if defined(TARGET_PPC64)
- case POWERPC_MMU_64B:
- case POWERPC_MMU_2_06:
- mmubooks_dump_mmu(f, cpu_fprintf, env);
- break;
-#endif
- default:
- qemu_log_mask(LOG_UNIMP, "%s: unimplemented\n", __func__);
- }
-}
-
-static inline int check_physical(CPUPPCState *env, mmu_ctx_t *ctx,
- target_ulong eaddr, int rw)
-{
- int in_plb, ret;
-
- ctx->raddr = eaddr;
- ctx->prot = PAGE_READ | PAGE_EXEC;
- ret = 0;
- switch (env->mmu_model) {
- case POWERPC_MMU_32B:
- case POWERPC_MMU_601:
- 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;
-#if defined(TARGET_PPC64)
- case POWERPC_MMU_620:
- case POWERPC_MMU_64B:
- case POWERPC_MMU_2_06:
- /* Real address are 60 bits long */
- ctx->raddr &= 0x0FFFFFFFFFFFFFFFULL;
- ctx->prot |= PAGE_WRITE;
- break;
-#endif
- 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 (rw == 1) {
- /* Access is not allowed */
- ret = -2;
- }
- } else {
- /* Read-write access is allowed */
- ctx->prot |= PAGE_WRITE;
- }
- }
- break;
- case POWERPC_MMU_MPC8xx:
- /* XXX: TODO */
- cpu_abort(env, "MPC8xx MMU model is not implemented\n");
- break;
- case POWERPC_MMU_BOOKE206:
- cpu_abort(env, "BookE 2.06 MMU doesn't have physical real mode\n");
- break;
- default:
- cpu_abort(env, "Unknown or invalid MMU model\n");
- return -1;
- }
-
- return ret;
-}
-
-int get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, target_ulong eaddr,
- int rw, int access_type)
-{
- int ret;
-
-#if 0
- qemu_log("%s\n", __func__);
-#endif
- if ((access_type == ACCESS_CODE && msr_ir == 0) ||
- (access_type != ACCESS_CODE && msr_dr == 0)) {
- if (env->mmu_model == POWERPC_MMU_BOOKE) {
- /* The BookE MMU always performs address translation. The
- IS and DS bits only affect the address space. */
- ret = mmubooke_get_physical_address(env, ctx, eaddr,
- rw, access_type);
- } else if (env->mmu_model == POWERPC_MMU_BOOKE206) {
- ret = mmubooke206_get_physical_address(env, ctx, eaddr, rw,
- access_type);
- } else {
- /* No address translation. */
- ret = check_physical(env, ctx, eaddr, rw);
- }
- } else {
- ret = -1;
- switch (env->mmu_model) {
- case POWERPC_MMU_32B:
- case POWERPC_MMU_601:
- case POWERPC_MMU_SOFT_6xx:
- case POWERPC_MMU_SOFT_74xx:
- /* Try to find a BAT */
- if (env->nb_BATs != 0) {
- ret = get_bat(env, ctx, eaddr, rw, access_type);
- }
-#if defined(TARGET_PPC64)
- case POWERPC_MMU_620:
- case POWERPC_MMU_64B:
- case POWERPC_MMU_2_06:
-#endif
- if (ret < 0) {
- /* We didn't match any BAT entry or don't have BATs */
- ret = get_segment(env, ctx, eaddr, rw, access_type);
- }
- break;
- case POWERPC_MMU_SOFT_4xx:
- case POWERPC_MMU_SOFT_4xx_Z:
- ret = mmu40x_get_physical_address(env, ctx, eaddr,
- rw, access_type);
- break;
- case POWERPC_MMU_BOOKE:
- ret = mmubooke_get_physical_address(env, ctx, eaddr,
- rw, access_type);
- break;
- case POWERPC_MMU_BOOKE206:
- ret = mmubooke206_get_physical_address(env, ctx, eaddr, rw,
- access_type);
- break;
- case POWERPC_MMU_MPC8xx:
- /* XXX: TODO */
- cpu_abort(env, "MPC8xx MMU model is not implemented\n");
- break;
- case POWERPC_MMU_REAL:
- cpu_abort(env, "PowerPC in real mode do not do any translation\n");
- return -1;
- default:
- cpu_abort(env, "Unknown or invalid MMU model\n");
- return -1;
- }
- }
-#if 0
- qemu_log("%s address " TARGET_FMT_lx " => %d " TARGET_FMT_plx "\n",
- __func__, eaddr, ret, ctx->raddr);
-#endif
-
- return ret;
-}
-
-target_phys_addr_t cpu_get_phys_page_debug(CPUPPCState *env, target_ulong addr)
-{
- mmu_ctx_t ctx;
-
- if (unlikely(get_physical_address(env, &ctx, addr, 0, ACCESS_INT) != 0)) {
- return -1;
- }
-
- return ctx.raddr & TARGET_PAGE_MASK;
-}
-
-static void booke206_update_mas_tlb_miss(CPUPPCState *env, target_ulong
address,
- int rw)
-{
- 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 (((rw == 2) && msr_ir) || ((rw != 2) && msr_dr)) {
- 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;
-
- switch (env->spr[SPR_BOOKE_MAS4] & MAS4_TIDSELD_PIDZ) {
- case MAS4_TIDSELD_PID0:
- env->spr[SPR_BOOKE_MAS1] |= env->spr[SPR_BOOKE_PID] << MAS1_TID_SHIFT;
- break;
- case MAS4_TIDSELD_PID1:
- env->spr[SPR_BOOKE_MAS1] |= env->spr[SPR_BOOKE_PID1] << MAS1_TID_SHIFT;
- break;
- case MAS4_TIDSELD_PID2:
- env->spr[SPR_BOOKE_MAS1] |= env->spr[SPR_BOOKE_PID2] << MAS1_TID_SHIFT;
- break;
- }
-
- env->spr[SPR_BOOKE_MAS6] |= env->spr[SPR_BOOKE_PID] << 16;
-
- /* 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 */
-int cpu_ppc_handle_mmu_fault(CPUPPCState *env, target_ulong address, int rw,
- int mmu_idx)
-{
- mmu_ctx_t ctx;
- int access_type;
- int ret = 0;
-
- if (rw == 2) {
- /* code access */
- rw = 0;
- access_type = ACCESS_CODE;
- } else {
- /* data access */
- access_type = env->access_type;
- }
- ret = get_physical_address(env, &ctx, address, rw, access_type);
- if (ret == 0) {
- tlb_set_page(env, 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(env);
- if (access_type == ACCESS_CODE) {
- switch (ret) {
- case -1:
- /* No matches in page tables or TLB */
- switch (env->mmu_model) {
- case POWERPC_MMU_SOFT_6xx:
- env->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:
- env->exception_index = POWERPC_EXCP_IFTLB;
- goto tlb_miss_74xx;
- case POWERPC_MMU_SOFT_4xx:
- case POWERPC_MMU_SOFT_4xx_Z:
- env->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_32B:
- case POWERPC_MMU_601:
-#if defined(TARGET_PPC64)
- case POWERPC_MMU_620:
- case POWERPC_MMU_64B:
- case POWERPC_MMU_2_06:
-#endif
- env->exception_index = POWERPC_EXCP_ISI;
- env->error_code = 0x40000000;
- break;
- case POWERPC_MMU_BOOKE206:
- booke206_update_mas_tlb_miss(env, address, rw);
- /* fall through */
- case POWERPC_MMU_BOOKE:
- env->exception_index = POWERPC_EXCP_ITLB;
- env->error_code = 0;
- env->spr[SPR_BOOKE_DEAR] = address;
- return -1;
- case POWERPC_MMU_MPC8xx:
- /* XXX: TODO */
- cpu_abort(env, "MPC8xx MMU model is not implemented\n");
- break;
- case POWERPC_MMU_REAL:
- cpu_abort(env, "PowerPC in real mode should never raise "
- "any MMU exceptions\n");
- return -1;
- default:
- cpu_abort(env, "Unknown or invalid MMU model\n");
- return -1;
- }
- break;
- case -2:
- /* Access rights violation */
- env->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;
- }
- env->exception_index = POWERPC_EXCP_ISI;
- env->error_code = 0x10000000;
- break;
- case -4:
- /* Direct store exception */
- /* No code fetch is allowed in direct-store areas */
- env->exception_index = POWERPC_EXCP_ISI;
- env->error_code = 0x10000000;
- break;
-#if defined(TARGET_PPC64)
- case -5:
- /* No match in segment table */
- if (env->mmu_model == POWERPC_MMU_620) {
- env->exception_index = POWERPC_EXCP_ISI;
- /* XXX: this might be incorrect */
- env->error_code = 0x40000000;
- } else {
- env->exception_index = POWERPC_EXCP_ISEG;
- env->error_code = 0;
- }
- break;
-#endif
- }
- } else {
- switch (ret) {
- case -1:
- /* No matches in page tables or TLB */
- switch (env->mmu_model) {
- case POWERPC_MMU_SOFT_6xx:
- if (rw == 1) {
- env->exception_index = POWERPC_EXCP_DSTLB;
- env->error_code = 1 << 16;
- } else {
- env->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] = env->htab_base +
- get_pteg_offset(env, ctx.hash[0], HASH_PTE_SIZE_32);
- env->spr[SPR_HASH2] = env->htab_base +
- get_pteg_offset(env, ctx.hash[1], HASH_PTE_SIZE_32);
- break;
- case POWERPC_MMU_SOFT_74xx:
- if (rw == 1) {
- env->exception_index = POWERPC_EXCP_DSTLB;
- } else {
- env->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:
- env->exception_index = POWERPC_EXCP_DTLB;
- env->error_code = 0;
- env->spr[SPR_40x_DEAR] = address;
- if (rw) {
- env->spr[SPR_40x_ESR] = 0x00800000;
- } else {
- env->spr[SPR_40x_ESR] = 0x00000000;
- }
- break;
- case POWERPC_MMU_32B:
- case POWERPC_MMU_601:
-#if defined(TARGET_PPC64)
- case POWERPC_MMU_620:
- case POWERPC_MMU_64B:
- case POWERPC_MMU_2_06:
-#endif
- env->exception_index = POWERPC_EXCP_DSI;
- env->error_code = 0;
- env->spr[SPR_DAR] = address;
- if (rw == 1) {
- env->spr[SPR_DSISR] = 0x42000000;
- } else {
- env->spr[SPR_DSISR] = 0x40000000;
- }
- break;
- case POWERPC_MMU_MPC8xx:
- /* XXX: TODO */
- cpu_abort(env, "MPC8xx MMU model is not implemented\n");
- break;
- case POWERPC_MMU_BOOKE206:
- booke206_update_mas_tlb_miss(env, address, rw);
- /* fall through */
- case POWERPC_MMU_BOOKE:
- env->exception_index = POWERPC_EXCP_DTLB;
- env->error_code = 0;
- env->spr[SPR_BOOKE_DEAR] = address;
- env->spr[SPR_BOOKE_ESR] = rw ? ESR_ST : 0;
- return -1;
- case POWERPC_MMU_REAL:
- cpu_abort(env, "PowerPC in real mode should never raise "
- "any MMU exceptions\n");
- return -1;
- default:
- cpu_abort(env, "Unknown or invalid MMU model\n");
- return -1;
- }
- break;
- case -2:
- /* Access rights violation */
- env->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 (rw) {
- 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] = rw ? ESR_ST : 0;
- } else {
- env->spr[SPR_DAR] = address;
- if (rw == 1) {
- env->spr[SPR_DSISR] = 0x0A000000;
- } else {
- env->spr[SPR_DSISR] = 0x08000000;
- }
- }
- break;
- case -4:
- /* Direct store exception */
- switch (access_type) {
- case ACCESS_FLOAT:
- /* Floating point load/store */
- env->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. */
- env->exception_index = POWERPC_EXCP_DSI;
- env->error_code = 0;
- env->spr[SPR_DAR] = address;
- if (rw == 1) {
- env->spr[SPR_DSISR] = 0x06000000;
- } else {
- env->spr[SPR_DSISR] = 0x04000000;
- }
- break;
- case ACCESS_EXT:
- /* eciwx or ecowx */
- env->exception_index = POWERPC_EXCP_DSI;
- env->error_code = 0;
- env->spr[SPR_DAR] = address;
- if (rw == 1) {
- env->spr[SPR_DSISR] = 0x06100000;
- } else {
- env->spr[SPR_DSISR] = 0x04100000;
- }
- break;
- default:
- printf("DSI: invalid exception (%d)\n", ret);
- env->exception_index = POWERPC_EXCP_PROGRAM;
- env->error_code =
- POWERPC_EXCP_INVAL | POWERPC_EXCP_INVAL_INVAL;
- env->spr[SPR_DAR] = address;
- break;
- }
- break;
-#if defined(TARGET_PPC64)
- case -5:
- /* No match in segment table */
- if (env->mmu_model == POWERPC_MMU_620) {
- env->exception_index = POWERPC_EXCP_DSI;
- env->error_code = 0;
- env->spr[SPR_DAR] = address;
- /* XXX: this might be incorrect */
- if (rw == 1) {
- env->spr[SPR_DSISR] = 0x42000000;
- } else {
- env->spr[SPR_DSISR] = 0x40000000;
- }
- } else {
- env->exception_index = POWERPC_EXCP_DSEG;
- env->error_code = 0;
- env->spr[SPR_DAR] = address;
- }
- break;
-#endif
- }
- }
-#if 0
- printf("%s: set exception to %d %02x\n", __func__,
- env->exception, env->error_code);
-#endif
- ret = 1;
- }
-
- return ret;
-}
-
-/*****************************************************************************/
-/* BATs management */
-#if !defined(FLUSH_ALL_TLBS)
-static inline void do_invalidate_BAT(CPUPPCState *env, target_ulong BATu,
- target_ulong mask)
-{
- target_ulong base, end, page;
-
- base = BATu & ~0x0001FFFF;
- end = base + mask + 0x00020000;
- LOG_BATS("Flush BAT from " TARGET_FMT_lx " to " TARGET_FMT_lx " ("
- TARGET_FMT_lx ")\n", base, end, mask);
- for (page = base; page != end; page += TARGET_PAGE_SIZE) {
- tlb_flush_page(env, page);
- }
- LOG_BATS("Flush done\n");
-}
-#endif
-
-static inline void dump_store_bat(CPUPPCState *env, char ID, int ul, int nr,
- target_ulong value)
-{
- LOG_BATS("Set %cBAT%d%c to " TARGET_FMT_lx " (" TARGET_FMT_lx ")\n", ID,
- nr, ul == 0 ? 'u' : 'l', value, env->nip);
-}
-
-void ppc_store_ibatu(CPUPPCState *env, int nr, target_ulong value)
-{
- target_ulong mask;
-
- dump_store_bat(env, 'I', 0, nr, value);
- if (env->IBAT[0][nr] != value) {
- mask = (value << 15) & 0x0FFE0000UL;
-#if !defined(FLUSH_ALL_TLBS)
- do_invalidate_BAT(env, env->IBAT[0][nr], mask);
-#endif
- /* When storing valid upper BAT, mask BEPI and BRPN
- * and invalidate all TLBs covered by this BAT
- */
- mask = (value << 15) & 0x0FFE0000UL;
- env->IBAT[0][nr] = (value & 0x00001FFFUL) |
- (value & ~0x0001FFFFUL & ~mask);
- env->IBAT[1][nr] = (env->IBAT[1][nr] & 0x0000007B) |
- (env->IBAT[1][nr] & ~0x0001FFFF & ~mask);
-#if !defined(FLUSH_ALL_TLBS)
- do_invalidate_BAT(env, env->IBAT[0][nr], mask);
-#else
- tlb_flush(env, 1);
-#endif
- }
-}
-
-void ppc_store_ibatl(CPUPPCState *env, int nr, target_ulong value)
-{
- dump_store_bat(env, 'I', 1, nr, value);
- env->IBAT[1][nr] = value;
-}
-
-void ppc_store_dbatu(CPUPPCState *env, int nr, target_ulong value)
-{
- target_ulong mask;
-
- dump_store_bat(env, 'D', 0, nr, value);
- if (env->DBAT[0][nr] != value) {
- /* When storing valid upper BAT, mask BEPI and BRPN
- * and invalidate all TLBs covered by this BAT
- */
- mask = (value << 15) & 0x0FFE0000UL;
-#if !defined(FLUSH_ALL_TLBS)
- do_invalidate_BAT(env, env->DBAT[0][nr], mask);
-#endif
- mask = (value << 15) & 0x0FFE0000UL;
- env->DBAT[0][nr] = (value & 0x00001FFFUL) |
- (value & ~0x0001FFFFUL & ~mask);
- env->DBAT[1][nr] = (env->DBAT[1][nr] & 0x0000007B) |
- (env->DBAT[1][nr] & ~0x0001FFFF & ~mask);
-#if !defined(FLUSH_ALL_TLBS)
- do_invalidate_BAT(env, env->DBAT[0][nr], mask);
-#else
- tlb_flush(env, 1);
-#endif
- }
-}
-
-void ppc_store_dbatl(CPUPPCState *env, int nr, target_ulong value)
-{
- dump_store_bat(env, 'D', 1, nr, value);
- env->DBAT[1][nr] = value;
-}
-
-void ppc_store_ibatu_601(CPUPPCState *env, int nr, target_ulong value)
-{
- target_ulong mask;
-#if defined(FLUSH_ALL_TLBS)
- int do_inval;
-#endif
-
- dump_store_bat(env, 'I', 0, nr, value);
- if (env->IBAT[0][nr] != value) {
-#if defined(FLUSH_ALL_TLBS)
- do_inval = 0;
-#endif
- mask = (env->IBAT[1][nr] << 17) & 0x0FFE0000UL;
- if (env->IBAT[1][nr] & 0x40) {
- /* Invalidate BAT only if it is valid */
-#if !defined(FLUSH_ALL_TLBS)
- do_invalidate_BAT(env, env->IBAT[0][nr], mask);
-#else
- do_inval = 1;
-#endif
- }
- /* When storing valid upper BAT, mask BEPI and BRPN
- * and invalidate all TLBs covered by this BAT
- */
- env->IBAT[0][nr] = (value & 0x00001FFFUL) |
- (value & ~0x0001FFFFUL & ~mask);
- env->DBAT[0][nr] = env->IBAT[0][nr];
- if (env->IBAT[1][nr] & 0x40) {
-#if !defined(FLUSH_ALL_TLBS)
- do_invalidate_BAT(env, env->IBAT[0][nr], mask);
-#else
- do_inval = 1;
-#endif
- }
-#if defined(FLUSH_ALL_TLBS)
- if (do_inval) {
- tlb_flush(env, 1);
- }
-#endif
- }
-}
-
-void ppc_store_ibatl_601(CPUPPCState *env, int nr, target_ulong value)
-{
- target_ulong mask;
-#if defined(FLUSH_ALL_TLBS)
- int do_inval;
-#endif
-
- dump_store_bat(env, 'I', 1, nr, value);
- if (env->IBAT[1][nr] != value) {
-#if defined(FLUSH_ALL_TLBS)
- do_inval = 0;
-#endif
- if (env->IBAT[1][nr] & 0x40) {
-#if !defined(FLUSH_ALL_TLBS)
- mask = (env->IBAT[1][nr] << 17) & 0x0FFE0000UL;
- do_invalidate_BAT(env, env->IBAT[0][nr], mask);
-#else
- do_inval = 1;
-#endif
- }
- if (value & 0x40) {
-#if !defined(FLUSH_ALL_TLBS)
- mask = (value << 17) & 0x0FFE0000UL;
- do_invalidate_BAT(env, env->IBAT[0][nr], mask);
-#else
- do_inval = 1;
-#endif
- }
- env->IBAT[1][nr] = value;
- env->DBAT[1][nr] = value;
-#if defined(FLUSH_ALL_TLBS)
- if (do_inval) {
- tlb_flush(env, 1);
- }
-#endif
- }
-}
-
-/*****************************************************************************/
-/* TLB management */
-void ppc_tlb_invalidate_all(CPUPPCState *env)
-{
- switch (env->mmu_model) {
- case POWERPC_MMU_SOFT_6xx:
- case POWERPC_MMU_SOFT_74xx:
- ppc6xx_tlb_invalidate_all(env);
- break;
- case POWERPC_MMU_SOFT_4xx:
- case POWERPC_MMU_SOFT_4xx_Z:
- ppc4xx_tlb_invalidate_all(env);
- break;
- case POWERPC_MMU_REAL:
- cpu_abort(env, "No TLB for PowerPC 4xx in real mode\n");
- break;
- case POWERPC_MMU_MPC8xx:
- /* XXX: TODO */
- cpu_abort(env, "MPC8xx MMU model is not implemented\n");
- break;
- case POWERPC_MMU_BOOKE:
- tlb_flush(env, 1);
- break;
- case POWERPC_MMU_BOOKE206:
- booke206_flush_tlb(env, -1, 0);
- break;
- case POWERPC_MMU_32B:
- case POWERPC_MMU_601:
-#if defined(TARGET_PPC64)
- case POWERPC_MMU_620:
- case POWERPC_MMU_64B:
- case POWERPC_MMU_2_06:
-#endif /* defined(TARGET_PPC64) */
- tlb_flush(env, 1);
- break;
- default:
- /* XXX: TODO */
- cpu_abort(env, "Unknown MMU model\n");
- break;
- }
-}
-
-void ppc_tlb_invalidate_one(CPUPPCState *env, target_ulong addr)
-{
-#if !defined(FLUSH_ALL_TLBS)
- addr &= TARGET_PAGE_MASK;
- switch (env->mmu_model) {
- case POWERPC_MMU_SOFT_6xx:
- case POWERPC_MMU_SOFT_74xx:
- ppc6xx_tlb_invalidate_virt(env, addr, 0);
- if (env->id_tlbs == 1) {
- ppc6xx_tlb_invalidate_virt(env, addr, 1);
- }
- break;
- case POWERPC_MMU_SOFT_4xx:
- case POWERPC_MMU_SOFT_4xx_Z:
- ppc4xx_tlb_invalidate_virt(env, addr, env->spr[SPR_40x_PID]);
- break;
- case POWERPC_MMU_REAL:
- cpu_abort(env, "No TLB for PowerPC 4xx in real mode\n");
- break;
- case POWERPC_MMU_MPC8xx:
- /* XXX: TODO */
- cpu_abort(env, "MPC8xx MMU model is not implemented\n");
- break;
- case POWERPC_MMU_BOOKE:
- /* XXX: TODO */
- cpu_abort(env, "BookE MMU model is not implemented\n");
- break;
- case POWERPC_MMU_BOOKE206:
- /* XXX: TODO */
- cpu_abort(env, "BookE 2.06 MMU model is not implemented\n");
- break;
- case POWERPC_MMU_32B:
- case POWERPC_MMU_601:
- /* tlbie invalidate TLBs for all segments */
- addr &= ~((target_ulong)-1ULL << 28);
- /* XXX: this case should be optimized,
- * giving a mask to tlb_flush_page
- */
- tlb_flush_page(env, addr | (0x0 << 28));
- tlb_flush_page(env, addr | (0x1 << 28));
- tlb_flush_page(env, addr | (0x2 << 28));
- tlb_flush_page(env, addr | (0x3 << 28));
- tlb_flush_page(env, addr | (0x4 << 28));
- tlb_flush_page(env, addr | (0x5 << 28));
- tlb_flush_page(env, addr | (0x6 << 28));
- tlb_flush_page(env, addr | (0x7 << 28));
- tlb_flush_page(env, addr | (0x8 << 28));
- tlb_flush_page(env, addr | (0x9 << 28));
- tlb_flush_page(env, addr | (0xA << 28));
- tlb_flush_page(env, addr | (0xB << 28));
- tlb_flush_page(env, addr | (0xC << 28));
- tlb_flush_page(env, addr | (0xD << 28));
- tlb_flush_page(env, addr | (0xE << 28));
- tlb_flush_page(env, addr | (0xF << 28));
- break;
-#if defined(TARGET_PPC64)
- case POWERPC_MMU_620:
- case POWERPC_MMU_64B:
- case POWERPC_MMU_2_06:
- /* tlbie invalidate TLBs for all segments */
- /* XXX: given the fact that there are too many segments to invalidate,
- * and we still don't have a tlb_flush_mask(env, n, mask) in QEMU,
- * we just invalidate all TLBs
- */
- tlb_flush(env, 1);
- break;
-#endif /* defined(TARGET_PPC64) */
- default:
- /* XXX: TODO */
- cpu_abort(env, "Unknown MMU model\n");
- break;
- }
-#else
- ppc_tlb_invalidate_all(env);
-#endif
-}
-
/*****************************************************************************/
/* Special registers manipulation */
-#if defined(TARGET_PPC64)
-void ppc_store_asr(CPUPPCState *env, target_ulong value)
-{
- if (env->asr != value) {
- env->asr = value;
- tlb_flush(env, 1);
- }
-}
-#endif
-
-void ppc_store_sdr1(CPUPPCState *env, target_ulong value)
-{
- LOG_MMU("%s: " TARGET_FMT_lx "\n", __func__, value);
- if (env->spr[SPR_SDR1] != value) {
- env->spr[SPR_SDR1] = value;
-#if defined(TARGET_PPC64)
- if (env->mmu_model & POWERPC_MMU_64) {
- target_ulong htabsize = value & SDR_64_HTABSIZE;
-
- if (htabsize > 28) {
- fprintf(stderr, "Invalid HTABSIZE 0x" TARGET_FMT_lx
- " stored in SDR1\n", htabsize);
- htabsize = 28;
- }
- env->htab_mask = (1ULL << (htabsize + 18)) - 1;
- env->htab_base = value & SDR_64_HTABORG;
- } else
-#endif /* defined(TARGET_PPC64) */
- {
- /* FIXME: Should check for valid HTABMASK values */
- env->htab_mask = ((value & SDR_32_HTABMASK) << 16) | 0xFFFF;
- env->htab_base = value & SDR_32_HTABORG;
- }
- tlb_flush(env, 1);
- }
-}
-
-#if defined(TARGET_PPC64)
-target_ulong ppc_load_sr(CPUPPCState *env, int slb_nr)
-{
- /* XXX */
- return 0;
-}
-#endif
-
-void ppc_store_sr(CPUPPCState *env, int srnum, target_ulong value)
-{
- LOG_MMU("%s: reg=%d " TARGET_FMT_lx " " TARGET_FMT_lx "\n", __func__,
- srnum, value, env->sr[srnum]);
-#if defined(TARGET_PPC64)
- if (env->mmu_model & POWERPC_MMU_64) {
- uint64_t rb = 0, rs = 0;
-
- /* ESID = srnum */
- rb |= ((uint32_t)srnum & 0xf) << 28;
- /* Set the valid bit */
- rb |= 1 << 27;
- /* Index = ESID */
- rb |= (uint32_t)srnum;
-
- /* VSID = VSID */
- rs |= (value & 0xfffffff) << 12;
- /* flags = flags */
- rs |= ((value >> 27) & 0xf) << 8;
-
- ppc_store_slb(env, rb, rs);
- } else
-#endif
- if (env->sr[srnum] != value) {
- env->sr[srnum] = value;
-/* Invalidating 256MB of virtual memory in 4kB pages is way longer than
- flusing the whole TLB. */
-#if !defined(FLUSH_ALL_TLBS) && 0
- {
- target_ulong page, end;
- /* Invalidate 256 MB of virtual memory */
- page = (16 << 20) * srnum;
- end = page + (16 << 20);
- for (; page != end; page += TARGET_PAGE_SIZE) {
- tlb_flush_page(env, page);
- }
- }
-#else
- tlb_flush(env, 1);
-#endif
- }
-}
-#endif /* !defined(CONFIG_USER_ONLY) */
/* GDBstub can read and write MSR... */
void ppc_store_msr(CPUPPCState *env, target_ulong value)
diff --git a/target-ppc/mmu_helper.c b/target-ppc/mmu_helper.c
index e79b8f2..1f67451 100644
--- a/target-ppc/mmu_helper.c
+++ b/target-ppc/mmu_helper.c
@@ -18,8 +18,24 @@
*/
#include "cpu.h"
#include "helper.h"
+#include "kvm.h"
+#include "kvm_ppc.h"
+//#define DEBUG_MMU
+//#define DEBUG_BATS
+//#define DEBUG_SLB
//#define DEBUG_SOFTWARE_TLB
+//#define DUMP_PAGE_TABLES
+//#define DEBUG_SOFTWARE_TLB
+//#define FLUSH_ALL_TLBS
+
+#ifdef DEBUG_MMU
+# define LOG_MMU(...) qemu_log(__VA_ARGS__)
+# define LOG_MMU_STATE(env) log_cpu_state((env), 0)
+#else
+# define LOG_MMU(...) do { } while (0)
+# define LOG_MMU_STATE(...) do { } while (0)
+#endif
#ifdef DEBUG_SOFTWARE_TLB
# define LOG_SWTLB(...) qemu_log(__VA_ARGS__)
@@ -27,6 +43,2461 @@
# define LOG_SWTLB(...) do { } while (0)
#endif
+#ifdef DEBUG_BATS
+# define LOG_BATS(...) qemu_log(__VA_ARGS__)
+#else
+# define LOG_BATS(...) do { } while (0)
+#endif
+
+#ifdef DEBUG_SLB
+# define LOG_SLB(...) qemu_log(__VA_ARGS__)
+#else
+# define LOG_SLB(...) do { } while (0)
+#endif
+
+/*****************************************************************************/
+/* PowerPC MMU emulation */
+#if defined(CONFIG_USER_ONLY)
+int cpu_ppc_handle_mmu_fault(CPUPPCState *env, target_ulong address, int rw,
+ int mmu_idx)
+{
+ int exception, error_code;
+
+ if (rw == 2) {
+ exception = POWERPC_EXCP_ISI;
+ error_code = 0x40000000;
+ } else {
+ exception = POWERPC_EXCP_DSI;
+ error_code = 0x40000000;
+ if (rw) {
+ error_code |= 0x02000000;
+ }
+ env->spr[SPR_DAR] = address;
+ env->spr[SPR_DSISR] = error_code;
+ }
+ env->exception_index = exception;
+ env->error_code = error_code;
+
+ return 1;
+}
+
+#else
+/* 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;
+}
+
+#if defined(TARGET_PPC64)
+static inline int pte64_is_valid(target_ulong pte0)
+{
+ return pte0 & 0x0000000000000001ULL ? 1 : 0;
+}
+
+static inline void pte64_invalidate(target_ulong *pte0)
+{
+ *pte0 &= ~0x0000000000000001ULL;
+}
+#endif
+
+#define PTE_PTEM_MASK 0x7FFFFFBF
+#define PTE_CHECK_MASK (TARGET_PAGE_MASK | 0x7B)
+#if defined(TARGET_PPC64)
+#define PTE64_PTEM_MASK 0xFFFFFFFFFFFFFF80ULL
+#define PTE64_CHECK_MASK (TARGET_PAGE_MASK | 0x7F)
+#endif
+
+static inline int pp_check(int key, int pp, int nx)
+{
+ int access;
+
+ /* Compute access rights */
+ /* When pp is 3/7, the result is undefined. Set it to noaccess */
+ access = 0;
+ if (key == 0) {
+ switch (pp) {
+ case 0x0:
+ case 0x1:
+ case 0x2:
+ access |= PAGE_WRITE;
+ /* No break here */
+ case 0x3:
+ case 0x6:
+ access |= PAGE_READ;
+ break;
+ }
+ } else {
+ switch (pp) {
+ case 0x0:
+ case 0x6:
+ 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 inline int check_prot(int prot, int rw, int access_type)
+{
+ int ret;
+
+ if (access_type == ACCESS_CODE) {
+ if (prot & PAGE_EXEC) {
+ ret = 0;
+ } else {
+ ret = -2;
+ }
+ } else if (rw) {
+ if (prot & PAGE_WRITE) {
+ ret = 0;
+ } else {
+ ret = -2;
+ }
+ } else {
+ if (prot & PAGE_READ) {
+ ret = 0;
+ } else {
+ ret = -2;
+ }
+ }
+
+ return ret;
+}
+
+static inline int pte_check(mmu_ctx_t *ctx, int is_64b, target_ulong pte0,
+ target_ulong pte1, int h, int rw, int type)
+{
+ target_ulong ptem, mmask;
+ int access, ret, pteh, ptev, pp;
+
+ ret = -1;
+ /* Check validity and table match */
+#if defined(TARGET_PPC64)
+ if (is_64b) {
+ ptev = pte64_is_valid(pte0);
+ pteh = (pte0 >> 1) & 1;
+ } else
+#endif
+ {
+ ptev = pte_is_valid(pte0);
+ pteh = (pte0 >> 6) & 1;
+ }
+ if (ptev && h == pteh) {
+ /* Check vsid & api */
+#if defined(TARGET_PPC64)
+ if (is_64b) {
+ ptem = pte0 & PTE64_PTEM_MASK;
+ mmask = PTE64_CHECK_MASK;
+ pp = (pte1 & 0x00000003) | ((pte1 >> 61) & 0x00000004);
+ ctx->nx = (pte1 >> 2) & 1; /* No execute bit */
+ ctx->nx |= (pte1 >> 3) & 1; /* Guarded bit */
+ } else
+#endif
+ {
+ ptem = pte0 & PTE_PTEM_MASK;
+ mmask = PTE_CHECK_MASK;
+ pp = pte1 & 0x00000003;
+ }
+ if (ptem == ctx->ptem) {
+ if (ctx->raddr != (target_phys_addr_t)-1ULL) {
+ /* all matches should have equal RPN, WIMG & PP */
+ if ((ctx->raddr & mmask) != (pte1 & mmask)) {
+ qemu_log("Bad RPN/WIMG/PP\n");
+ return -3;
+ }
+ }
+ /* Compute access rights */
+ access = pp_check(ctx->key, pp, ctx->nx);
+ /* Keep the matching PTE informations */
+ ctx->raddr = pte1;
+ ctx->prot = access;
+ ret = check_prot(ctx->prot, rw, type);
+ if (ret == 0) {
+ /* Access granted */
+ LOG_MMU("PTE access granted !\n");
+ } else {
+ /* Access right violation */
+ LOG_MMU("PTE access rejected\n");
+ }
+ }
+ }
+
+ return ret;
+}
+
+static inline int pte32_check(mmu_ctx_t *ctx, target_ulong pte0,
+ target_ulong pte1, int h, int rw, int type)
+{
+ return pte_check(ctx, 0, pte0, pte1, h, rw, type);
+}
+
+#if defined(TARGET_PPC64)
+static inline int pte64_check(mmu_ctx_t *ctx, target_ulong pte0,
+ target_ulong pte1, int h, int rw, int type)
+{
+ return pte_check(ctx, 1, pte0, pte1, h, rw, type);
+}
+#endif
+
+static inline int pte_update_flags(mmu_ctx_t *ctx, target_ulong *pte1p,
+ int ret, int rw)
+{
+ int store = 0;
+
+ /* Update page flags */
+ if (!(*pte1p & 0x00000100)) {
+ /* Update accessed flag */
+ *pte1p |= 0x00000100;
+ store = 1;
+ }
+ if (!(*pte1p & 0x00000080)) {
+ if (rw == 1 && 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, 1);
+}
+
+static inline void ppc6xx_tlb_invalidate_virt2(CPUPPCState *env,
+ target_ulong eaddr,
+ int is_code, int match_epn)
+{
+#if !defined(FLUSH_ALL_TLBS)
+ 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(env, 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);
+}
+
+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;
+}
+
+static inline int ppc6xx_tlb_check(CPUPPCState *env, mmu_ctx_t *ctx,
+ target_ulong eaddr, int rw, int 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 == ACCESS_CODE ? 1 : 0);
+ 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,
+ rw ? 'S' : 'L', access_type == ACCESS_CODE ? 'I' : 'D');
+ switch (pte32_check(ctx, tlb->pte0, tlb->pte1, 0, rw, 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, rw);
+ }
+
+ 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 inline void bat_601_size_prot(CPUPPCState *env, target_ulong *blp,
+ int *validp, int *protp,
+ target_ulong *BATu, target_ulong *BATl)
+{
+ target_ulong bl;
+ int key, pp, valid, prot;
+
+ bl = (*BATl & 0x0000003F) << 17;
+ LOG_BATS("b %02x ==> bl " TARGET_FMT_lx " msk " TARGET_FMT_lx "\n",
+ (uint8_t)(*BATl & 0x0000003F), bl, ~bl);
+ prot = 0;
+ valid = (*BATl >> 6) & 1;
+ if (valid) {
+ pp = *BATu & 0x00000003;
+ if (msr_pr == 0) {
+ key = (*BATu >> 3) & 1;
+ } else {
+ key = (*BATu >> 2) & 1;
+ }
+ prot = pp_check(key, pp, 0);
+ }
+ *blp = bl;
+ *validp = valid;
+ *protp = prot;
+}
+
+static inline int get_bat(CPUPPCState *env, mmu_ctx_t *ctx,
+ target_ulong virtual, int rw, int type)
+{
+ target_ulong *BATlt, *BATut, *BATu, *BATl;
+ target_ulong BEPIl, BEPIu, bl;
+ int i, valid, prot;
+ int ret = -1;
+
+ LOG_BATS("%s: %cBAT v " TARGET_FMT_lx "\n", __func__,
+ type == ACCESS_CODE ? 'I' : 'D', virtual);
+ 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;
+ if (unlikely(env->mmu_model == POWERPC_MMU_601)) {
+ bat_601_size_prot(env, &bl, &valid, &prot, BATu, BATl);
+ } else {
+ 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__,
+ type == ACCESS_CODE ? '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, rw, 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__, type == ACCESS_CODE ? 'I' : 'D', i, virtual,
+ *BATu, *BATl, BEPIu, BEPIl, bl);
+ }
+ }
+#endif
+ }
+ /* No hit */
+ return ret;
+}
+
+static inline target_phys_addr_t get_pteg_offset(CPUPPCState *env,
+ target_phys_addr_t hash,
+ int pte_size)
+{
+ return (hash * pte_size * 8) & env->htab_mask;
+}
+
+/* PTE table lookup */
+static inline int find_pte2(CPUPPCState *env, mmu_ctx_t *ctx, int is_64b, int
h,
+ int rw, int type, int target_page_bits)
+{
+ target_phys_addr_t pteg_off;
+ target_ulong pte0, pte1;
+ int i, good = -1;
+ int ret, r;
+
+ ret = -1; /* No entry found */
+ pteg_off = get_pteg_offset(env, ctx->hash[h],
+ is_64b ? HASH_PTE_SIZE_64 : HASH_PTE_SIZE_32);
+ for (i = 0; i < 8; i++) {
+#if defined(TARGET_PPC64)
+ if (is_64b) {
+ if (env->external_htab) {
+ pte0 = ldq_p(env->external_htab + pteg_off + (i * 16));
+ pte1 = ldq_p(env->external_htab + pteg_off + (i * 16) + 8);
+ } else {
+ pte0 = ldq_phys(env->htab_base + pteg_off + (i * 16));
+ pte1 = ldq_phys(env->htab_base + pteg_off + (i * 16) + 8);
+ }
+
+ r = pte64_check(ctx, pte0, pte1, h, rw, type);
+ LOG_MMU("Load pte from " TARGET_FMT_lx " => " TARGET_FMT_lx " "
+ TARGET_FMT_lx " %d %d %d " TARGET_FMT_lx "\n",
+ pteg_off + (i * 16), pte0, pte1, (int)(pte0 & 1), h,
+ (int)((pte0 >> 1) & 1), ctx->ptem);
+ } else
+#endif
+ {
+ if (env->external_htab) {
+ pte0 = ldl_p(env->external_htab + pteg_off + (i * 8));
+ pte1 = ldl_p(env->external_htab + pteg_off + (i * 8) + 4);
+ } else {
+ pte0 = ldl_phys(env->htab_base + pteg_off + (i * 8));
+ pte1 = ldl_phys(env->htab_base + pteg_off + (i * 8) + 4);
+ }
+ r = pte32_check(ctx, pte0, pte1, h, rw, type);
+ LOG_MMU("Load pte from " TARGET_FMT_lx " => " TARGET_FMT_lx " "
+ TARGET_FMT_lx " %d %d %d " TARGET_FMT_lx "\n",
+ pteg_off + (i * 8), pte0, pte1, (int)(pte0 >> 31), h,
+ (int)((pte0 >> 6) & 1), ctx->ptem);
+ }
+ switch (r) {
+ case -3:
+ /* PTE inconsistency */
+ return -1;
+ case -2:
+ /* Access violation */
+ ret = -2;
+ good = i;
+ break;
+ case -1:
+ default:
+ /* No PTE match */
+ break;
+ case 0:
+ /* access granted */
+ /* XXX: we should go on looping to check all PTEs consistency
+ * but if we can speed-up the whole thing as the
+ * result would be undefined if PTEs are not consistent.
+ */
+ ret = 0;
+ good = i;
+ goto done;
+ }
+ }
+ if (good != -1) {
+ done:
+ LOG_MMU("found PTE at addr " TARGET_FMT_lx " prot=%01x ret=%d\n",
+ ctx->raddr, ctx->prot, ret);
+ /* Update page flags */
+ pte1 = ctx->raddr;
+ if (pte_update_flags(ctx, &pte1, ret, rw) == 1) {
+#if defined(TARGET_PPC64)
+ if (is_64b) {
+ if (env->external_htab) {
+ stq_p(env->external_htab + pteg_off + (good * 16) + 8,
+ pte1);
+ } else {
+ stq_phys_notdirty(env->htab_base + pteg_off +
+ (good * 16) + 8, pte1);
+ }
+ } else
+#endif
+ {
+ if (env->external_htab) {
+ stl_p(env->external_htab + pteg_off + (good * 8) + 4,
+ pte1);
+ } else {
+ stl_phys_notdirty(env->htab_base + pteg_off +
+ (good * 8) + 4, pte1);
+ }
+ }
+ }
+ }
+
+ /* We have a TLB that saves 4K pages, so let's
+ * split a huge page to 4k chunks */
+ if (target_page_bits != TARGET_PAGE_BITS) {
+ ctx->raddr |= (ctx->eaddr & ((1 << target_page_bits) - 1))
+ & TARGET_PAGE_MASK;
+ }
+ return ret;
+}
+
+static inline int find_pte(CPUPPCState *env, mmu_ctx_t *ctx, int h, int rw,
+ int type, int target_page_bits)
+{
+#if defined(TARGET_PPC64)
+ if (env->mmu_model & POWERPC_MMU_64) {
+ return find_pte2(env, ctx, 1, h, rw, type, target_page_bits);
+ }
+#endif
+
+ return find_pte2(env, ctx, 0, h, rw, type, target_page_bits);
+}
+
+#if defined(TARGET_PPC64)
+static inline ppc_slb_t *slb_lookup(CPUPPCState *env, target_ulong eaddr)
+{
+ uint64_t esid_256M, esid_1T;
+ int n;
+
+ LOG_SLB("%s: eaddr " TARGET_FMT_lx "\n", __func__, eaddr);
+
+ esid_256M = (eaddr & SEGMENT_MASK_256M) | SLB_ESID_V;
+ esid_1T = (eaddr & SEGMENT_MASK_1T) | SLB_ESID_V;
+
+ for (n = 0; n < env->slb_nr; n++) {
+ ppc_slb_t *slb = &env->slb[n];
+
+ LOG_SLB("%s: slot %d %016" PRIx64 " %016"
+ PRIx64 "\n", __func__, n, slb->esid, slb->vsid);
+ /* We check for 1T matches on all MMUs here - if the MMU
+ * doesn't have 1T segment support, we will have prevented 1T
+ * entries from being inserted in the slbmte code. */
+ if (((slb->esid == esid_256M) &&
+ ((slb->vsid & SLB_VSID_B) == SLB_VSID_B_256M))
+ || ((slb->esid == esid_1T) &&
+ ((slb->vsid & SLB_VSID_B) == SLB_VSID_B_1T))) {
+ return slb;
+ }
+ }
+
+ return NULL;
+}
+
+void ppc_slb_invalidate_all(CPUPPCState *env)
+{
+ int n, do_invalidate;
+
+ do_invalidate = 0;
+ /* XXX: Warning: slbia never invalidates the first segment */
+ for (n = 1; n < env->slb_nr; n++) {
+ ppc_slb_t *slb = &env->slb[n];
+
+ if (slb->esid & SLB_ESID_V) {
+ slb->esid &= ~SLB_ESID_V;
+ /* XXX: given the fact that segment size is 256 MB or 1TB,
+ * and we still don't have a tlb_flush_mask(env, n, mask)
+ * in QEMU, we just invalidate all TLBs
+ */
+ do_invalidate = 1;
+ }
+ }
+ if (do_invalidate) {
+ tlb_flush(env, 1);
+ }
+}
+
+void ppc_slb_invalidate_one(CPUPPCState *env, uint64_t T0)
+{
+ ppc_slb_t *slb;
+
+ slb = slb_lookup(env, T0);
+ if (!slb) {
+ return;
+ }
+
+ if (slb->esid & SLB_ESID_V) {
+ slb->esid &= ~SLB_ESID_V;
+
+ /* XXX: given the fact that segment size is 256 MB or 1TB,
+ * and we still don't have a tlb_flush_mask(env, n, mask)
+ * in QEMU, we just invalidate all TLBs
+ */
+ tlb_flush(env, 1);
+ }
+}
+
+int ppc_store_slb(CPUPPCState *env, target_ulong rb, target_ulong rs)
+{
+ int slot = rb & 0xfff;
+ ppc_slb_t *slb = &env->slb[slot];
+
+ if (rb & (0x1000 - env->slb_nr)) {
+ return -1; /* Reserved bits set or slot too high */
+ }
+ if (rs & (SLB_VSID_B & ~SLB_VSID_B_1T)) {
+ return -1; /* Bad segment size */
+ }
+ if ((rs & SLB_VSID_B) && !(env->mmu_model & POWERPC_MMU_1TSEG)) {
+ return -1; /* 1T segment on MMU that doesn't support it */
+ }
+
+ /* Mask out the slot number as we store the entry */
+ slb->esid = rb & (SLB_ESID_ESID | SLB_ESID_V);
+ slb->vsid = rs;
+
+ LOG_SLB("%s: %d " TARGET_FMT_lx " - " TARGET_FMT_lx " => %016" PRIx64
+ " %016" PRIx64 "\n", __func__, slot, rb, rs,
+ slb->esid, slb->vsid);
+
+ return 0;
+}
+
+int ppc_load_slb_esid(CPUPPCState *env, target_ulong rb, target_ulong *rt)
+{
+ int slot = rb & 0xfff;
+ ppc_slb_t *slb = &env->slb[slot];
+
+ if (slot >= env->slb_nr) {
+ return -1;
+ }
+
+ *rt = slb->esid;
+ return 0;
+}
+
+int ppc_load_slb_vsid(CPUPPCState *env, target_ulong rb, target_ulong *rt)
+{
+ int slot = rb & 0xfff;
+ ppc_slb_t *slb = &env->slb[slot];
+
+ if (slot >= env->slb_nr) {
+ return -1;
+ }
+
+ *rt = slb->vsid;
+ return 0;
+}
+#endif /* defined(TARGET_PPC64) */
+
+/* Perform segment based translation */
+static inline int get_segment(CPUPPCState *env, mmu_ctx_t *ctx,
+ target_ulong eaddr, int rw, int type)
+{
+ target_phys_addr_t hash;
+ target_ulong vsid;
+ int ds, pr, target_page_bits;
+ int ret, ret2;
+
+ pr = msr_pr;
+ ctx->eaddr = eaddr;
+#if defined(TARGET_PPC64)
+ if (env->mmu_model & POWERPC_MMU_64) {
+ ppc_slb_t *slb;
+ target_ulong pageaddr;
+ int segment_bits;
+
+ LOG_MMU("Check SLBs\n");
+ slb = slb_lookup(env, eaddr);
+ if (!slb) {
+ return -5;
+ }
+
+ if (slb->vsid & SLB_VSID_B) {
+ vsid = (slb->vsid & SLB_VSID_VSID) >> SLB_VSID_SHIFT_1T;
+ segment_bits = 40;
+ } else {
+ vsid = (slb->vsid & SLB_VSID_VSID) >> SLB_VSID_SHIFT;
+ segment_bits = 28;
+ }
+
+ target_page_bits = (slb->vsid & SLB_VSID_L)
+ ? TARGET_PAGE_BITS_16M : TARGET_PAGE_BITS;
+ ctx->key = !!(pr ? (slb->vsid & SLB_VSID_KP)
+ : (slb->vsid & SLB_VSID_KS));
+ ds = 0;
+ ctx->nx = !!(slb->vsid & SLB_VSID_N);
+
+ pageaddr = eaddr & ((1ULL << segment_bits)
+ - (1ULL << target_page_bits));
+ if (slb->vsid & SLB_VSID_B) {
+ hash = vsid ^ (vsid << 25) ^ (pageaddr >> target_page_bits);
+ } else {
+ hash = vsid ^ (pageaddr >> target_page_bits);
+ }
+ /* Only 5 bits of the page index are used in the AVPN */
+ ctx->ptem = (slb->vsid & SLB_VSID_PTEM) |
+ ((pageaddr >> 16) & ((1ULL << segment_bits) - 0x80));
+ } else
+#endif /* defined(TARGET_PPC64) */
+ {
+ target_ulong sr, pgidx;
+
+ 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;
+ 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, rw, type);
+ pgidx = (eaddr & ~SEGMENT_MASK_256M) >> target_page_bits;
+ hash = vsid ^ pgidx;
+ ctx->ptem = (vsid << 7) | (pgidx >> 10);
+ }
+ 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 */
+ LOG_MMU("htab_base " TARGET_FMT_plx " htab_mask " TARGET_FMT_plx
+ " hash " TARGET_FMT_plx "\n",
+ env->htab_base, env->htab_mask, hash);
+ ctx->hash[0] = hash;
+ ctx->hash[1] = ~hash;
+
+ /* Initialize real address with an invalid value */
+ ctx->raddr = (target_phys_addr_t)-1ULL;
+ if (unlikely(env->mmu_model == POWERPC_MMU_SOFT_6xx ||
+ env->mmu_model == POWERPC_MMU_SOFT_74xx)) {
+ /* Software TLB search */
+ ret = ppc6xx_tlb_check(env, ctx, eaddr, rw, type);
+ } else {
+ LOG_MMU("0 htab=" TARGET_FMT_plx "/" TARGET_FMT_plx
+ " vsid=" TARGET_FMT_lx " ptem=" TARGET_FMT_lx
+ " hash=" TARGET_FMT_plx "\n",
+ env->htab_base, env->htab_mask, vsid, ctx->ptem,
+ ctx->hash[0]);
+ /* Primary table lookup */
+ ret = find_pte(env, ctx, 0, rw, type, target_page_bits);
+ if (ret < 0) {
+ /* Secondary table lookup */
+ if (eaddr != 0xEFFFFFFF) {
+ LOG_MMU("1 htab=" TARGET_FMT_plx "/" TARGET_FMT_plx
+ " vsid=" TARGET_FMT_lx " api=" TARGET_FMT_lx
+ " hash=" TARGET_FMT_plx "\n", env->htab_base,
+ env->htab_mask, vsid, ctx->ptem, ctx->hash[1]);
+ }
+ ret2 = find_pte(env, ctx, 1, rw, type,
+ target_page_bits);
+ if (ret2 != -1) {
+ ret = ret2;
+ }
+ }
+ }
+#if defined(DUMP_PAGE_TABLES)
+ if (qemu_log_enabled()) {
+ target_phys_addr_t curaddr;
+ uint32_t a0, a1, a2, a3;
+
+ qemu_log("Page table: " TARGET_FMT_plx " len " TARGET_FMT_plx
+ "\n", sdr, mask + 0x80);
+ for (curaddr = sdr; curaddr < (sdr + mask + 0x80);
+ curaddr += 16) {
+ a0 = ldl_phys(curaddr);
+ a1 = ldl_phys(curaddr + 4);
+ a2 = ldl_phys(curaddr + 8);
+ a3 = ldl_phys(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 {
+ LOG_MMU("No access allowed\n");
+ ret = -3;
+ }
+ } else {
+ target_ulong sr;
+
+ 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("ERROR: instruction should not need "
+ "address translation\n");
+ return -4;
+ }
+ if ((rw == 1 || ctx->key != 1) && (rw == 0 || 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,
+ target_phys_addr_t *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 (TARGET_PHYS_ADDR_BITS >= 36)
+ if (ext) {
+ /* Extend the physical address to 36 bits */
+ *raddrp |= (target_phys_addr_t)(tlb->RPN & 0xF) << 32;
+ }
+#endif
+
+ return 0;
+}
+
+/* Generic TLB search function for PowerPC embedded implementations */
+int ppcemb_tlb_search(CPUPPCState *env, target_ulong address, uint32_t pid)
+{
+ ppcemb_tlb_t *tlb;
+ target_phys_addr_t 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;
+}
+
+/* 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, 1);
+}
+
+static inline void ppc4xx_tlb_invalidate_virt(CPUPPCState *env,
+ target_ulong eaddr, uint32_t pid)
+{
+#if !defined(FLUSH_ALL_TLBS)
+ ppcemb_tlb_t *tlb;
+ target_phys_addr_t raddr;
+ target_ulong page, end;
+ int i;
+
+ for (i = 0; i < env->nb_tlb; i++) {
+ tlb = &env->tlb.tlbe[i];
+ if (ppcemb_tlb_check(env, tlb, &raddr, eaddr, pid, 0, i) == 0) {
+ end = tlb->EPN + tlb->size;
+ for (page = tlb->EPN; page < end; page += TARGET_PAGE_SIZE) {
+ tlb_flush_page(env, page);
+ }
+ tlb->prot &= ~PAGE_VALID;
+ break;
+ }
+ }
+#else
+ ppc4xx_tlb_invalidate_all(env);
+#endif
+}
+
+static int mmu40x_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
+ target_ulong address, int rw,
+ int access_type)
+{
+ ppcemb_tlb_t *tlb;
+ target_phys_addr_t raddr;
+ int i, ret, zsel, zpr, pr;
+
+ ret = -1;
+ raddr = (target_phys_addr_t)-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 rw %d attr %08x\n",
+ __func__, i, zsel, zpr, rw, tlb->attr);
+ /* Check execute enable bit */
+ switch (zpr) {
+ case 0x2:
+ if (pr != 0) {
+ goto check_perms;
+ }
+ /* No break here */
+ 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;
+ }
+ /* No break here */
+ case 0x1:
+ check_perms:
+ /* Check from TLB entry */
+ ctx->prot = tlb->prot;
+ ret = check_prot(ctx->prot, rw, 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, "Little-endian regions are not supported by now\n");
+ }
+ env->spr[SPR_405_SLER] = val;
+}
+
+static inline int mmubooke_check_tlb(CPUPPCState *env, ppcemb_tlb_t *tlb,
+ target_phys_addr_t *raddr, int *prot,
+ target_ulong address, int rw,
+ int access_type, int i)
+{
+ int ret, 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 == ACCESS_CODE) {
+ if (msr_ir != (tlb->attr & 1)) {
+ LOG_SWTLB("%s: AS doesn't match\n", __func__);
+ return -1;
+ }
+
+ *prot = prot2;
+ if (prot2 & PAGE_EXEC) {
+ LOG_SWTLB("%s: good TLB!\n", __func__);
+ return 0;
+ }
+
+ LOG_SWTLB("%s: no PAGE_EXEC: %x\n", __func__, prot2);
+ ret = -3;
+ } else {
+ if (msr_dr != (tlb->attr & 1)) {
+ LOG_SWTLB("%s: AS doesn't match\n", __func__);
+ return -1;
+ }
+
+ *prot = prot2;
+ if ((!rw && prot2 & PAGE_READ) || (rw && (prot2 & PAGE_WRITE))) {
+ LOG_SWTLB("%s: found TLB!\n", __func__);
+ return 0;
+ }
+
+ LOG_SWTLB("%s: PAGE_READ/WRITE doesn't match: %x\n", __func__, prot2);
+ ret = -2;
+ }
+
+ return ret;
+}
+
+static int mmubooke_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
+ target_ulong address, int rw,
+ int access_type)
+{
+ ppcemb_tlb_t *tlb;
+ target_phys_addr_t raddr;
+ int i, ret;
+
+ ret = -1;
+ raddr = (target_phys_addr_t)-1ULL;
+ for (i = 0; i < env->nb_tlb; i++) {
+ tlb = &env->tlb.tlbe[i];
+ ret = mmubooke_check_tlb(env, tlb, &raddr, &ctx->prot, address, rw,
+ access_type, i);
+ if (!ret) {
+ 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;
+}
+
+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, 1);
+}
+
+target_phys_addr_t 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,
+ target_phys_addr_t *raddrp,
+ target_ulong address, uint32_t pid)
+{
+ target_ulong mask;
+ uint32_t tlb_pid;
+
+ /* 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" TARGET_FMT_lx " MAS7_3=0x%" PRIx64 "
MAS8=%x\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 int mmubooke206_check_tlb(CPUPPCState *env, ppcmas_tlb_t *tlb,
+ target_phys_addr_t *raddr, int *prot,
+ target_ulong address, int rw,
+ int access_type)
+{
+ int ret;
+ int prot2 = 0;
+
+ 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;
+ }
+
+ LOG_SWTLB("%s: TLB entry not found\n", __func__);
+ return -1;
+
+found_tlb:
+
+ if (msr_pr != 0) {
+ 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 == ACCESS_CODE) {
+ if (msr_ir != ((tlb->mas1 & MAS1_TS) >> MAS1_TS_SHIFT)) {
+ LOG_SWTLB("%s: AS doesn't match\n", __func__);
+ return -1;
+ }
+
+ *prot = prot2;
+ if (prot2 & PAGE_EXEC) {
+ LOG_SWTLB("%s: good TLB!\n", __func__);
+ return 0;
+ }
+
+ LOG_SWTLB("%s: no PAGE_EXEC: %x\n", __func__, prot2);
+ ret = -3;
+ } else {
+ if (msr_dr != ((tlb->mas1 & MAS1_TS) >> MAS1_TS_SHIFT)) {
+ LOG_SWTLB("%s: AS doesn't match\n", __func__);
+ return -1;
+ }
+
+ *prot = prot2;
+ if ((!rw && prot2 & PAGE_READ) || (rw && (prot2 & PAGE_WRITE))) {
+ LOG_SWTLB("%s: found TLB!\n", __func__);
+ return 0;
+ }
+
+ LOG_SWTLB("%s: PAGE_READ/WRITE doesn't match: %x\n", __func__, prot2);
+ ret = -2;
+ }
+
+ return ret;
+}
+
+static int mmubooke206_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
+ target_ulong address, int rw,
+ int access_type)
+{
+ ppcmas_tlb_t *tlb;
+ target_phys_addr_t raddr;
+ int i, j, ret;
+
+ ret = -1;
+ raddr = (target_phys_addr_t)-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,
+ rw, access_type);
+ 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(FILE *f, fprintf_function cpu_fprintf,
+ CPUPPCState *env)
+{
+ ppcemb_tlb_t *entry;
+ int i;
+
+ if (kvm_enabled() && !env->kvm_sw_tlb) {
+ cpu_fprintf(f, "Cannot access KVM TLB\n");
+ return;
+ }
+
+ cpu_fprintf(f, "\nTLB:\n");
+ cpu_fprintf(f, "Effective Physical Size PID Prot "
+ "Attr\n");
+
+ entry = &env->tlb.tlbe[0];
+ for (i = 0; i < env->nb_tlb; i++, entry++) {
+ target_phys_addr_t 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;
+#if (TARGET_PHYS_ADDR_BITS >= 36)
+ /* Extend the physical address to 36 bits */
+ pa |= (target_phys_addr_t)(entry->RPN & 0xF) << 32;
+#endif
+ size /= 1024;
+ if (size >= 1024) {
+ snprintf(size_buf, sizeof(size_buf), "%3" PRId64 "M", size / 1024);
+ } else {
+ snprintf(size_buf, sizeof(size_buf), "%3" PRId64 "k", size);
+ }
+ cpu_fprintf(f, "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(FILE *f, fprintf_function cpu_fprintf,
+ CPUPPCState *env, int tlbn, int offset,
+ int tlbsize)
+{
+ ppcmas_tlb_t *entry;
+ int i;
+
+ cpu_fprintf(f, "\nTLB%d:\n", tlbn);
+ cpu_fprintf(f, "Effective Physical Size TID TS SRWX"
+ " URWX WIMGE U0123\n");
+
+ entry = &env->tlb.tlbm[offset];
+ for (i = 0; i < tlbsize; i++, entry++) {
+ target_phys_addr_t 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);
+
+ cpu_fprintf(f, "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(FILE *f, fprintf_function cpu_fprintf,
+ CPUPPCState *env)
+{
+ int offset = 0;
+ int i;
+
+ if (kvm_enabled() && !env->kvm_sw_tlb) {
+ cpu_fprintf(f, "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(f, cpu_fprintf, env, i, offset, size);
+ offset += size;
+ }
+}
+
+#if defined(TARGET_PPC64)
+static void mmubooks_dump_mmu(FILE *f, fprintf_function cpu_fprintf,
+ CPUPPCState *env)
+{
+ int i;
+ uint64_t slbe, slbv;
+
+ cpu_synchronize_state(env);
+
+ cpu_fprintf(f, "SLB\tESID\t\t\tVSID\n");
+ for (i = 0; i < env->slb_nr; i++) {
+ slbe = env->slb[i].esid;
+ slbv = env->slb[i].vsid;
+ if (slbe == 0 && slbv == 0) {
+ continue;
+ }
+ cpu_fprintf(f, "%d\t0x%016" PRIx64 "\t0x%016" PRIx64 "\n",
+ i, slbe, slbv);
+ }
+}
+#endif
+
+void dump_mmu(FILE *f, fprintf_function cpu_fprintf, CPUPPCState *env)
+{
+ switch (env->mmu_model) {
+ case POWERPC_MMU_BOOKE:
+ mmubooke_dump_mmu(f, cpu_fprintf, env);
+ break;
+ case POWERPC_MMU_BOOKE206:
+ mmubooke206_dump_mmu(f, cpu_fprintf, env);
+ break;
+#if defined(TARGET_PPC64)
+ case POWERPC_MMU_64B:
+ case POWERPC_MMU_2_06:
+ mmubooks_dump_mmu(f, cpu_fprintf, env);
+ break;
+#endif
+ default:
+ qemu_log_mask(LOG_UNIMP, "%s: unimplemented\n", __func__);
+ }
+}
+
+static inline int check_physical(CPUPPCState *env, mmu_ctx_t *ctx,
+ target_ulong eaddr, int rw)
+{
+ int in_plb, ret;
+
+ ctx->raddr = eaddr;
+ ctx->prot = PAGE_READ | PAGE_EXEC;
+ ret = 0;
+ switch (env->mmu_model) {
+ case POWERPC_MMU_32B:
+ case POWERPC_MMU_601:
+ 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;
+#if defined(TARGET_PPC64)
+ case POWERPC_MMU_620:
+ case POWERPC_MMU_64B:
+ case POWERPC_MMU_2_06:
+ /* Real address are 60 bits long */
+ ctx->raddr &= 0x0FFFFFFFFFFFFFFFULL;
+ ctx->prot |= PAGE_WRITE;
+ break;
+#endif
+ 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 (rw == 1) {
+ /* Access is not allowed */
+ ret = -2;
+ }
+ } else {
+ /* Read-write access is allowed */
+ ctx->prot |= PAGE_WRITE;
+ }
+ }
+ break;
+ case POWERPC_MMU_MPC8xx:
+ /* XXX: TODO */
+ cpu_abort(env, "MPC8xx MMU model is not implemented\n");
+ break;
+ case POWERPC_MMU_BOOKE206:
+ cpu_abort(env, "BookE 2.06 MMU doesn't have physical real mode\n");
+ break;
+ default:
+ cpu_abort(env, "Unknown or invalid MMU model\n");
+ return -1;
+ }
+
+ return ret;
+}
+
+int get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, target_ulong eaddr,
+ int rw, int access_type)
+{
+ int ret;
+
+#if 0
+ qemu_log("%s\n", __func__);
+#endif
+ if ((access_type == ACCESS_CODE && msr_ir == 0) ||
+ (access_type != ACCESS_CODE && msr_dr == 0)) {
+ if (env->mmu_model == POWERPC_MMU_BOOKE) {
+ /* The BookE MMU always performs address translation. The
+ IS and DS bits only affect the address space. */
+ ret = mmubooke_get_physical_address(env, ctx, eaddr,
+ rw, access_type);
+ } else if (env->mmu_model == POWERPC_MMU_BOOKE206) {
+ ret = mmubooke206_get_physical_address(env, ctx, eaddr, rw,
+ access_type);
+ } else {
+ /* No address translation. */
+ ret = check_physical(env, ctx, eaddr, rw);
+ }
+ } else {
+ ret = -1;
+ switch (env->mmu_model) {
+ case POWERPC_MMU_32B:
+ case POWERPC_MMU_601:
+ case POWERPC_MMU_SOFT_6xx:
+ case POWERPC_MMU_SOFT_74xx:
+ /* Try to find a BAT */
+ if (env->nb_BATs != 0) {
+ ret = get_bat(env, ctx, eaddr, rw, access_type);
+ }
+#if defined(TARGET_PPC64)
+ case POWERPC_MMU_620:
+ case POWERPC_MMU_64B:
+ case POWERPC_MMU_2_06:
+#endif
+ if (ret < 0) {
+ /* We didn't match any BAT entry or don't have BATs */
+ ret = get_segment(env, ctx, eaddr, rw, access_type);
+ }
+ break;
+ case POWERPC_MMU_SOFT_4xx:
+ case POWERPC_MMU_SOFT_4xx_Z:
+ ret = mmu40x_get_physical_address(env, ctx, eaddr,
+ rw, access_type);
+ break;
+ case POWERPC_MMU_BOOKE:
+ ret = mmubooke_get_physical_address(env, ctx, eaddr,
+ rw, access_type);
+ break;
+ case POWERPC_MMU_BOOKE206:
+ ret = mmubooke206_get_physical_address(env, ctx, eaddr, rw,
+ access_type);
+ break;
+ case POWERPC_MMU_MPC8xx:
+ /* XXX: TODO */
+ cpu_abort(env, "MPC8xx MMU model is not implemented\n");
+ break;
+ case POWERPC_MMU_REAL:
+ cpu_abort(env, "PowerPC in real mode do not do any translation\n");
+ return -1;
+ default:
+ cpu_abort(env, "Unknown or invalid MMU model\n");
+ return -1;
+ }
+ }
+#if 0
+ qemu_log("%s address " TARGET_FMT_lx " => %d " TARGET_FMT_plx "\n",
+ __func__, eaddr, ret, ctx->raddr);
+#endif
+
+ return ret;
+}
+
+target_phys_addr_t cpu_get_phys_page_debug(CPUPPCState *env, target_ulong addr)
+{
+ mmu_ctx_t ctx;
+
+ if (unlikely(get_physical_address(env, &ctx, addr, 0, ACCESS_INT) != 0)) {
+ return -1;
+ }
+
+ return ctx.raddr & TARGET_PAGE_MASK;
+}
+
+static void booke206_update_mas_tlb_miss(CPUPPCState *env, target_ulong
address,
+ int rw)
+{
+ 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 (((rw == 2) && msr_ir) || ((rw != 2) && msr_dr)) {
+ 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;
+
+ switch (env->spr[SPR_BOOKE_MAS4] & MAS4_TIDSELD_PIDZ) {
+ case MAS4_TIDSELD_PID0:
+ env->spr[SPR_BOOKE_MAS1] |= env->spr[SPR_BOOKE_PID] << MAS1_TID_SHIFT;
+ break;
+ case MAS4_TIDSELD_PID1:
+ env->spr[SPR_BOOKE_MAS1] |= env->spr[SPR_BOOKE_PID1] << MAS1_TID_SHIFT;
+ break;
+ case MAS4_TIDSELD_PID2:
+ env->spr[SPR_BOOKE_MAS1] |= env->spr[SPR_BOOKE_PID2] << MAS1_TID_SHIFT;
+ break;
+ }
+
+ env->spr[SPR_BOOKE_MAS6] |= env->spr[SPR_BOOKE_PID] << 16;
+
+ /* 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 */
+int cpu_ppc_handle_mmu_fault(CPUPPCState *env, target_ulong address, int rw,
+ int mmu_idx)
+{
+ mmu_ctx_t ctx;
+ int access_type;
+ int ret = 0;
+
+ if (rw == 2) {
+ /* code access */
+ rw = 0;
+ access_type = ACCESS_CODE;
+ } else {
+ /* data access */
+ access_type = env->access_type;
+ }
+ ret = get_physical_address(env, &ctx, address, rw, access_type);
+ if (ret == 0) {
+ tlb_set_page(env, 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(env);
+ if (access_type == ACCESS_CODE) {
+ switch (ret) {
+ case -1:
+ /* No matches in page tables or TLB */
+ switch (env->mmu_model) {
+ case POWERPC_MMU_SOFT_6xx:
+ env->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:
+ env->exception_index = POWERPC_EXCP_IFTLB;
+ goto tlb_miss_74xx;
+ case POWERPC_MMU_SOFT_4xx:
+ case POWERPC_MMU_SOFT_4xx_Z:
+ env->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_32B:
+ case POWERPC_MMU_601:
+#if defined(TARGET_PPC64)
+ case POWERPC_MMU_620:
+ case POWERPC_MMU_64B:
+ case POWERPC_MMU_2_06:
+#endif
+ env->exception_index = POWERPC_EXCP_ISI;
+ env->error_code = 0x40000000;
+ break;
+ case POWERPC_MMU_BOOKE206:
+ booke206_update_mas_tlb_miss(env, address, rw);
+ /* fall through */
+ case POWERPC_MMU_BOOKE:
+ env->exception_index = POWERPC_EXCP_ITLB;
+ env->error_code = 0;
+ env->spr[SPR_BOOKE_DEAR] = address;
+ return -1;
+ case POWERPC_MMU_MPC8xx:
+ /* XXX: TODO */
+ cpu_abort(env, "MPC8xx MMU model is not implemented\n");
+ break;
+ case POWERPC_MMU_REAL:
+ cpu_abort(env, "PowerPC in real mode should never raise "
+ "any MMU exceptions\n");
+ return -1;
+ default:
+ cpu_abort(env, "Unknown or invalid MMU model\n");
+ return -1;
+ }
+ break;
+ case -2:
+ /* Access rights violation */
+ env->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;
+ }
+ env->exception_index = POWERPC_EXCP_ISI;
+ env->error_code = 0x10000000;
+ break;
+ case -4:
+ /* Direct store exception */
+ /* No code fetch is allowed in direct-store areas */
+ env->exception_index = POWERPC_EXCP_ISI;
+ env->error_code = 0x10000000;
+ break;
+#if defined(TARGET_PPC64)
+ case -5:
+ /* No match in segment table */
+ if (env->mmu_model == POWERPC_MMU_620) {
+ env->exception_index = POWERPC_EXCP_ISI;
+ /* XXX: this might be incorrect */
+ env->error_code = 0x40000000;
+ } else {
+ env->exception_index = POWERPC_EXCP_ISEG;
+ env->error_code = 0;
+ }
+ break;
+#endif
+ }
+ } else {
+ switch (ret) {
+ case -1:
+ /* No matches in page tables or TLB */
+ switch (env->mmu_model) {
+ case POWERPC_MMU_SOFT_6xx:
+ if (rw == 1) {
+ env->exception_index = POWERPC_EXCP_DSTLB;
+ env->error_code = 1 << 16;
+ } else {
+ env->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] = env->htab_base +
+ get_pteg_offset(env, ctx.hash[0], HASH_PTE_SIZE_32);
+ env->spr[SPR_HASH2] = env->htab_base +
+ get_pteg_offset(env, ctx.hash[1], HASH_PTE_SIZE_32);
+ break;
+ case POWERPC_MMU_SOFT_74xx:
+ if (rw == 1) {
+ env->exception_index = POWERPC_EXCP_DSTLB;
+ } else {
+ env->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:
+ env->exception_index = POWERPC_EXCP_DTLB;
+ env->error_code = 0;
+ env->spr[SPR_40x_DEAR] = address;
+ if (rw) {
+ env->spr[SPR_40x_ESR] = 0x00800000;
+ } else {
+ env->spr[SPR_40x_ESR] = 0x00000000;
+ }
+ break;
+ case POWERPC_MMU_32B:
+ case POWERPC_MMU_601:
+#if defined(TARGET_PPC64)
+ case POWERPC_MMU_620:
+ case POWERPC_MMU_64B:
+ case POWERPC_MMU_2_06:
+#endif
+ env->exception_index = POWERPC_EXCP_DSI;
+ env->error_code = 0;
+ env->spr[SPR_DAR] = address;
+ if (rw == 1) {
+ env->spr[SPR_DSISR] = 0x42000000;
+ } else {
+ env->spr[SPR_DSISR] = 0x40000000;
+ }
+ break;
+ case POWERPC_MMU_MPC8xx:
+ /* XXX: TODO */
+ cpu_abort(env, "MPC8xx MMU model is not implemented\n");
+ break;
+ case POWERPC_MMU_BOOKE206:
+ booke206_update_mas_tlb_miss(env, address, rw);
+ /* fall through */
+ case POWERPC_MMU_BOOKE:
+ env->exception_index = POWERPC_EXCP_DTLB;
+ env->error_code = 0;
+ env->spr[SPR_BOOKE_DEAR] = address;
+ env->spr[SPR_BOOKE_ESR] = rw ? ESR_ST : 0;
+ return -1;
+ case POWERPC_MMU_REAL:
+ cpu_abort(env, "PowerPC in real mode should never raise "
+ "any MMU exceptions\n");
+ return -1;
+ default:
+ cpu_abort(env, "Unknown or invalid MMU model\n");
+ return -1;
+ }
+ break;
+ case -2:
+ /* Access rights violation */
+ env->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 (rw) {
+ 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] = rw ? ESR_ST : 0;
+ } else {
+ env->spr[SPR_DAR] = address;
+ if (rw == 1) {
+ env->spr[SPR_DSISR] = 0x0A000000;
+ } else {
+ env->spr[SPR_DSISR] = 0x08000000;
+ }
+ }
+ break;
+ case -4:
+ /* Direct store exception */
+ switch (access_type) {
+ case ACCESS_FLOAT:
+ /* Floating point load/store */
+ env->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. */
+ env->exception_index = POWERPC_EXCP_DSI;
+ env->error_code = 0;
+ env->spr[SPR_DAR] = address;
+ if (rw == 1) {
+ env->spr[SPR_DSISR] = 0x06000000;
+ } else {
+ env->spr[SPR_DSISR] = 0x04000000;
+ }
+ break;
+ case ACCESS_EXT:
+ /* eciwx or ecowx */
+ env->exception_index = POWERPC_EXCP_DSI;
+ env->error_code = 0;
+ env->spr[SPR_DAR] = address;
+ if (rw == 1) {
+ env->spr[SPR_DSISR] = 0x06100000;
+ } else {
+ env->spr[SPR_DSISR] = 0x04100000;
+ }
+ break;
+ default:
+ printf("DSI: invalid exception (%d)\n", ret);
+ env->exception_index = POWERPC_EXCP_PROGRAM;
+ env->error_code =
+ POWERPC_EXCP_INVAL | POWERPC_EXCP_INVAL_INVAL;
+ env->spr[SPR_DAR] = address;
+ break;
+ }
+ break;
+#if defined(TARGET_PPC64)
+ case -5:
+ /* No match in segment table */
+ if (env->mmu_model == POWERPC_MMU_620) {
+ env->exception_index = POWERPC_EXCP_DSI;
+ env->error_code = 0;
+ env->spr[SPR_DAR] = address;
+ /* XXX: this might be incorrect */
+ if (rw == 1) {
+ env->spr[SPR_DSISR] = 0x42000000;
+ } else {
+ env->spr[SPR_DSISR] = 0x40000000;
+ }
+ } else {
+ env->exception_index = POWERPC_EXCP_DSEG;
+ env->error_code = 0;
+ env->spr[SPR_DAR] = address;
+ }
+ break;
+#endif
+ }
+ }
+#if 0
+ printf("%s: set exception to %d %02x\n", __func__,
+ env->exception, env->error_code);
+#endif
+ ret = 1;
+ }
+
+ return ret;
+}
+
+/*****************************************************************************/
+/* BATs management */
+#if !defined(FLUSH_ALL_TLBS)
+static inline void do_invalidate_BAT(CPUPPCState *env, target_ulong BATu,
+ target_ulong mask)
+{
+ target_ulong base, end, page;
+
+ base = BATu & ~0x0001FFFF;
+ end = base + mask + 0x00020000;
+ LOG_BATS("Flush BAT from " TARGET_FMT_lx " to " TARGET_FMT_lx " ("
+ TARGET_FMT_lx ")\n", base, end, mask);
+ for (page = base; page != end; page += TARGET_PAGE_SIZE) {
+ tlb_flush_page(env, page);
+ }
+ LOG_BATS("Flush done\n");
+}
+#endif
+
+static inline void dump_store_bat(CPUPPCState *env, char ID, int ul, int nr,
+ target_ulong value)
+{
+ LOG_BATS("Set %cBAT%d%c to " TARGET_FMT_lx " (" TARGET_FMT_lx ")\n", ID,
+ nr, ul == 0 ? 'u' : 'l', value, env->nip);
+}
+
+void ppc_store_ibatu(CPUPPCState *env, int nr, target_ulong value)
+{
+ target_ulong mask;
+
+ dump_store_bat(env, 'I', 0, nr, value);
+ if (env->IBAT[0][nr] != value) {
+ mask = (value << 15) & 0x0FFE0000UL;
+#if !defined(FLUSH_ALL_TLBS)
+ do_invalidate_BAT(env, env->IBAT[0][nr], mask);
+#endif
+ /* When storing valid upper BAT, mask BEPI and BRPN
+ * and invalidate all TLBs covered by this BAT
+ */
+ mask = (value << 15) & 0x0FFE0000UL;
+ env->IBAT[0][nr] = (value & 0x00001FFFUL) |
+ (value & ~0x0001FFFFUL & ~mask);
+ env->IBAT[1][nr] = (env->IBAT[1][nr] & 0x0000007B) |
+ (env->IBAT[1][nr] & ~0x0001FFFF & ~mask);
+#if !defined(FLUSH_ALL_TLBS)
+ do_invalidate_BAT(env, env->IBAT[0][nr], mask);
+#else
+ tlb_flush(env, 1);
+#endif
+ }
+}
+
+void ppc_store_ibatl(CPUPPCState *env, int nr, target_ulong value)
+{
+ dump_store_bat(env, 'I', 1, nr, value);
+ env->IBAT[1][nr] = value;
+}
+
+void ppc_store_dbatu(CPUPPCState *env, int nr, target_ulong value)
+{
+ target_ulong mask;
+
+ dump_store_bat(env, 'D', 0, nr, value);
+ if (env->DBAT[0][nr] != value) {
+ /* When storing valid upper BAT, mask BEPI and BRPN
+ * and invalidate all TLBs covered by this BAT
+ */
+ mask = (value << 15) & 0x0FFE0000UL;
+#if !defined(FLUSH_ALL_TLBS)
+ do_invalidate_BAT(env, env->DBAT[0][nr], mask);
+#endif
+ mask = (value << 15) & 0x0FFE0000UL;
+ env->DBAT[0][nr] = (value & 0x00001FFFUL) |
+ (value & ~0x0001FFFFUL & ~mask);
+ env->DBAT[1][nr] = (env->DBAT[1][nr] & 0x0000007B) |
+ (env->DBAT[1][nr] & ~0x0001FFFF & ~mask);
+#if !defined(FLUSH_ALL_TLBS)
+ do_invalidate_BAT(env, env->DBAT[0][nr], mask);
+#else
+ tlb_flush(env, 1);
+#endif
+ }
+}
+
+void ppc_store_dbatl(CPUPPCState *env, int nr, target_ulong value)
+{
+ dump_store_bat(env, 'D', 1, nr, value);
+ env->DBAT[1][nr] = value;
+}
+
+void ppc_store_ibatu_601(CPUPPCState *env, int nr, target_ulong value)
+{
+ target_ulong mask;
+#if defined(FLUSH_ALL_TLBS)
+ int do_inval;
+#endif
+
+ dump_store_bat(env, 'I', 0, nr, value);
+ if (env->IBAT[0][nr] != value) {
+#if defined(FLUSH_ALL_TLBS)
+ do_inval = 0;
+#endif
+ mask = (env->IBAT[1][nr] << 17) & 0x0FFE0000UL;
+ if (env->IBAT[1][nr] & 0x40) {
+ /* Invalidate BAT only if it is valid */
+#if !defined(FLUSH_ALL_TLBS)
+ do_invalidate_BAT(env, env->IBAT[0][nr], mask);
+#else
+ do_inval = 1;
+#endif
+ }
+ /* When storing valid upper BAT, mask BEPI and BRPN
+ * and invalidate all TLBs covered by this BAT
+ */
+ env->IBAT[0][nr] = (value & 0x00001FFFUL) |
+ (value & ~0x0001FFFFUL & ~mask);
+ env->DBAT[0][nr] = env->IBAT[0][nr];
+ if (env->IBAT[1][nr] & 0x40) {
+#if !defined(FLUSH_ALL_TLBS)
+ do_invalidate_BAT(env, env->IBAT[0][nr], mask);
+#else
+ do_inval = 1;
+#endif
+ }
+#if defined(FLUSH_ALL_TLBS)
+ if (do_inval) {
+ tlb_flush(env, 1);
+ }
+#endif
+ }
+}
+
+void ppc_store_ibatl_601(CPUPPCState *env, int nr, target_ulong value)
+{
+ target_ulong mask;
+#if defined(FLUSH_ALL_TLBS)
+ int do_inval;
+#endif
+
+ dump_store_bat(env, 'I', 1, nr, value);
+ if (env->IBAT[1][nr] != value) {
+#if defined(FLUSH_ALL_TLBS)
+ do_inval = 0;
+#endif
+ if (env->IBAT[1][nr] & 0x40) {
+#if !defined(FLUSH_ALL_TLBS)
+ mask = (env->IBAT[1][nr] << 17) & 0x0FFE0000UL;
+ do_invalidate_BAT(env, env->IBAT[0][nr], mask);
+#else
+ do_inval = 1;
+#endif
+ }
+ if (value & 0x40) {
+#if !defined(FLUSH_ALL_TLBS)
+ mask = (value << 17) & 0x0FFE0000UL;
+ do_invalidate_BAT(env, env->IBAT[0][nr], mask);
+#else
+ do_inval = 1;
+#endif
+ }
+ env->IBAT[1][nr] = value;
+ env->DBAT[1][nr] = value;
+#if defined(FLUSH_ALL_TLBS)
+ if (do_inval) {
+ tlb_flush(env, 1);
+ }
+#endif
+ }
+}
+
+/*****************************************************************************/
+/* TLB management */
+void ppc_tlb_invalidate_all(CPUPPCState *env)
+{
+ switch (env->mmu_model) {
+ case POWERPC_MMU_SOFT_6xx:
+ case POWERPC_MMU_SOFT_74xx:
+ ppc6xx_tlb_invalidate_all(env);
+ break;
+ case POWERPC_MMU_SOFT_4xx:
+ case POWERPC_MMU_SOFT_4xx_Z:
+ ppc4xx_tlb_invalidate_all(env);
+ break;
+ case POWERPC_MMU_REAL:
+ cpu_abort(env, "No TLB for PowerPC 4xx in real mode\n");
+ break;
+ case POWERPC_MMU_MPC8xx:
+ /* XXX: TODO */
+ cpu_abort(env, "MPC8xx MMU model is not implemented\n");
+ break;
+ case POWERPC_MMU_BOOKE:
+ tlb_flush(env, 1);
+ break;
+ case POWERPC_MMU_BOOKE206:
+ booke206_flush_tlb(env, -1, 0);
+ break;
+ case POWERPC_MMU_32B:
+ case POWERPC_MMU_601:
+#if defined(TARGET_PPC64)
+ case POWERPC_MMU_620:
+ case POWERPC_MMU_64B:
+ case POWERPC_MMU_2_06:
+#endif /* defined(TARGET_PPC64) */
+ tlb_flush(env, 1);
+ break;
+ default:
+ /* XXX: TODO */
+ cpu_abort(env, "Unknown MMU model\n");
+ break;
+ }
+}
+
+void ppc_tlb_invalidate_one(CPUPPCState *env, target_ulong addr)
+{
+#if !defined(FLUSH_ALL_TLBS)
+ addr &= TARGET_PAGE_MASK;
+ switch (env->mmu_model) {
+ case POWERPC_MMU_SOFT_6xx:
+ case POWERPC_MMU_SOFT_74xx:
+ ppc6xx_tlb_invalidate_virt(env, addr, 0);
+ if (env->id_tlbs == 1) {
+ ppc6xx_tlb_invalidate_virt(env, addr, 1);
+ }
+ break;
+ case POWERPC_MMU_SOFT_4xx:
+ case POWERPC_MMU_SOFT_4xx_Z:
+ ppc4xx_tlb_invalidate_virt(env, addr, env->spr[SPR_40x_PID]);
+ break;
+ case POWERPC_MMU_REAL:
+ cpu_abort(env, "No TLB for PowerPC 4xx in real mode\n");
+ break;
+ case POWERPC_MMU_MPC8xx:
+ /* XXX: TODO */
+ cpu_abort(env, "MPC8xx MMU model is not implemented\n");
+ break;
+ case POWERPC_MMU_BOOKE:
+ /* XXX: TODO */
+ cpu_abort(env, "BookE MMU model is not implemented\n");
+ break;
+ case POWERPC_MMU_BOOKE206:
+ /* XXX: TODO */
+ cpu_abort(env, "BookE 2.06 MMU model is not implemented\n");
+ break;
+ case POWERPC_MMU_32B:
+ case POWERPC_MMU_601:
+ /* tlbie invalidate TLBs for all segments */
+ addr &= ~((target_ulong)-1ULL << 28);
+ /* XXX: this case should be optimized,
+ * giving a mask to tlb_flush_page
+ */
+ tlb_flush_page(env, addr | (0x0 << 28));
+ tlb_flush_page(env, addr | (0x1 << 28));
+ tlb_flush_page(env, addr | (0x2 << 28));
+ tlb_flush_page(env, addr | (0x3 << 28));
+ tlb_flush_page(env, addr | (0x4 << 28));
+ tlb_flush_page(env, addr | (0x5 << 28));
+ tlb_flush_page(env, addr | (0x6 << 28));
+ tlb_flush_page(env, addr | (0x7 << 28));
+ tlb_flush_page(env, addr | (0x8 << 28));
+ tlb_flush_page(env, addr | (0x9 << 28));
+ tlb_flush_page(env, addr | (0xA << 28));
+ tlb_flush_page(env, addr | (0xB << 28));
+ tlb_flush_page(env, addr | (0xC << 28));
+ tlb_flush_page(env, addr | (0xD << 28));
+ tlb_flush_page(env, addr | (0xE << 28));
+ tlb_flush_page(env, addr | (0xF << 28));
+ break;
+#if defined(TARGET_PPC64)
+ case POWERPC_MMU_620:
+ case POWERPC_MMU_64B:
+ case POWERPC_MMU_2_06:
+ /* tlbie invalidate TLBs for all segments */
+ /* XXX: given the fact that there are too many segments to invalidate,
+ * and we still don't have a tlb_flush_mask(env, n, mask) in QEMU,
+ * we just invalidate all TLBs
+ */
+ tlb_flush(env, 1);
+ break;
+#endif /* defined(TARGET_PPC64) */
+ default:
+ /* XXX: TODO */
+ cpu_abort(env, "Unknown MMU model\n");
+ break;
+ }
+#else
+ ppc_tlb_invalidate_all(env);
+#endif
+}
+
+/*****************************************************************************/
+/* Special registers manipulation */
+#if defined(TARGET_PPC64)
+void ppc_store_asr(CPUPPCState *env, target_ulong value)
+{
+ if (env->asr != value) {
+ env->asr = value;
+ tlb_flush(env, 1);
+ }
+}
+#endif
+
+void ppc_store_sdr1(CPUPPCState *env, target_ulong value)
+{
+ LOG_MMU("%s: " TARGET_FMT_lx "\n", __func__, value);
+ if (env->spr[SPR_SDR1] != value) {
+ env->spr[SPR_SDR1] = value;
+#if defined(TARGET_PPC64)
+ if (env->mmu_model & POWERPC_MMU_64) {
+ target_ulong htabsize = value & SDR_64_HTABSIZE;
+
+ if (htabsize > 28) {
+ fprintf(stderr, "Invalid HTABSIZE 0x" TARGET_FMT_lx
+ " stored in SDR1\n", htabsize);
+ htabsize = 28;
+ }
+ env->htab_mask = (1ULL << (htabsize + 18)) - 1;
+ env->htab_base = value & SDR_64_HTABORG;
+ } else
+#endif /* defined(TARGET_PPC64) */
+ {
+ /* FIXME: Should check for valid HTABMASK values */
+ env->htab_mask = ((value & SDR_32_HTABMASK) << 16) | 0xFFFF;
+ env->htab_base = value & SDR_32_HTABORG;
+ }
+ tlb_flush(env, 1);
+ }
+}
+
+#if defined(TARGET_PPC64)
+target_ulong ppc_load_sr(CPUPPCState *env, int slb_nr)
+{
+ /* XXX */
+ return 0;
+}
+#endif
+
+void ppc_store_sr(CPUPPCState *env, int srnum, target_ulong value)
+{
+ LOG_MMU("%s: reg=%d " TARGET_FMT_lx " " TARGET_FMT_lx "\n", __func__,
+ srnum, value, env->sr[srnum]);
+#if defined(TARGET_PPC64)
+ if (env->mmu_model & POWERPC_MMU_64) {
+ uint64_t rb = 0, rs = 0;
+
+ /* ESID = srnum */
+ rb |= ((uint32_t)srnum & 0xf) << 28;
+ /* Set the valid bit */
+ rb |= 1 << 27;
+ /* Index = ESID */
+ rb |= (uint32_t)srnum;
+
+ /* VSID = VSID */
+ rs |= (value & 0xfffffff) << 12;
+ /* flags = flags */
+ rs |= ((value >> 27) & 0xf) << 8;
+
+ ppc_store_slb(env, rb, rs);
+ } else
+#endif
+ if (env->sr[srnum] != value) {
+ env->sr[srnum] = value;
+/* Invalidating 256MB of virtual memory in 4kB pages is way longer than
+ flusing the whole TLB. */
+#if !defined(FLUSH_ALL_TLBS) && 0
+ {
+ target_ulong page, end;
+ /* Invalidate 256 MB of virtual memory */
+ page = (16 << 20) * srnum;
+ end = page + (16 << 20);
+ for (; page != end; page += TARGET_PAGE_SIZE) {
+ tlb_flush_page(env, page);
+ }
+ }
+#else
+ tlb_flush(env, 1);
+#endif
+ }
+}
+#endif /* !defined(CONFIG_USER_ONLY) */
+
/*****************************************************************************/
/* SPR accesses */
--
1.6.0.2
- [Qemu-devel] [PATCH 35/72] dt: add helper for phandle enumeration, (continued)
- [Qemu-devel] [PATCH 35/72] dt: add helper for phandle enumeration, Alexander Graf, 2012/06/23
- [Qemu-devel] [PATCH 42/72] PPC: e500: dt: create /hypervisor node dynamically, Alexander Graf, 2012/06/23
- [Qemu-devel] [PATCH 39/72] PPC: e500: require libfdt, Alexander Graf, 2012/06/23
- [Qemu-devel] [PATCH 47/72] PPC: e500: dt: create mpic node dynamically, Alexander Graf, 2012/06/23
- [Qemu-devel] [PATCH 46/72] PPC: e500: dt: create serial nodes dynamically, Alexander Graf, 2012/06/23
- [Qemu-devel] [PATCH 45/72] PPC: e500: dt: create /soc8544 node dynamically, Alexander Graf, 2012/06/23
- [Qemu-devel] [PATCH 44/72] PPC: e500: dt: create /chosen node dynamically, Alexander Graf, 2012/06/23
- [Qemu-devel] [PATCH 36/72] dt: add helper for empty dt creation, Alexander Graf, 2012/06/23
- [Qemu-devel] [PATCH 43/72] PPC: e500: dt: create / node dynamically, Alexander Graf, 2012/06/23
- [Qemu-devel] [PATCH 27/72] pseries: Correctly create ibm, segment-page-sizes property, Alexander Graf, 2012/06/23
- [Qemu-devel] [PATCH 13/72] ppc: Move MMU helpers from helper.c to mmu_helper.c,
Alexander Graf <=
- [Qemu-devel] [PATCH 60/72] dt: Add global option to set phandle start offset, Alexander Graf, 2012/06/23
- [Qemu-devel] [PATCH 61/72] PPC: e500: Refactor serial dt generation, Alexander Graf, 2012/06/23
- [Qemu-devel] [PATCH 58/72] PPC: e500: Define addresses as always 64bit, Alexander Graf, 2012/06/23
- [Qemu-devel] [PATCH 63/72] PPC: e500: allow users to set the /compatible property via -machine, Alexander Graf, 2012/06/23
- [Qemu-devel] [PATCH 64/72] uImage: increase the gzip load size, Alexander Graf, 2012/06/23
- [Qemu-devel] [PATCH 65/72] PPC: Add some booke SPR defines, Alexander Graf, 2012/06/23
- [Qemu-devel] [PATCH 52/72] PPC: e500: dt: use 64bit cell helper, Alexander Graf, 2012/06/23
- [Qemu-devel] [PATCH 66/72] PPC: Add support for MSR_CM, Alexander Graf, 2012/06/23
- [Qemu-devel] [PATCH 62/72] dt: make setprop argument static, Alexander Graf, 2012/06/23
- [Qemu-devel] [PATCH 72/72] PPC: BookE206: Bump MAS2 to 64bit, Alexander Graf, 2012/06/23