--- /dev/null
+/*
+ * PowerPC MMU, TLB, SLB and BAT emulation helpers for QEMU.
+ *
+ * Copyright (c) 2003-2007 Jocelyn Mayer
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+#include "cpu.h"
+#include "exec/helper-proto.h"
+#include "sysemu/kvm.h"
+#include "kvm_ppc.h"
+#include "mmu-hash64.h"
+#include "mmu-hash32.h"
+#include "exec/cpu_ldst.h"
+
+//#define DEBUG_MMU
+//#define DEBUG_BATS
+//#define DEBUG_SOFTWARE_TLB
+//#define DUMP_PAGE_TABLES
+//#define DEBUG_SOFTWARE_TLB
+//#define FLUSH_ALL_TLBS
+
+#ifdef DEBUG_MMU
+# define LOG_MMU_STATE(cpu) log_cpu_state((cpu), 0)
+#else
+# define LOG_MMU_STATE(cpu) 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
+
+/*****************************************************************************/
+/* PowerPC MMU emulation */
+
+/* Context used internally during MMU translations */
+typedef struct mmu_ctx_t mmu_ctx_t;
+struct mmu_ctx_t {
+ hwaddr raddr; /* Real address */
+ hwaddr eaddr; /* Effective address */
+ int prot; /* Protection bits */
+ hwaddr hash[2]; /* Pagetable hash values */
+ target_ulong ptem; /* Virtual segment ID | API */
+ int key; /* Access key */
+ int nx; /* Non-execute area */
+};
+
+/* Common routines used by software and hardware TLBs emulation */
+static inline int pte_is_valid(target_ulong pte0)
+{
+ return pte0 & 0x80000000 ? 1 : 0;
+}
+
+static inline void pte_invalidate(target_ulong *pte0)
+{
+ *pte0 &= ~0x80000000;
+}
+
+#define PTE_PTEM_MASK 0x7FFFFFBF
+#define PTE_CHECK_MASK (TARGET_PAGE_MASK | 0x7B)
+
+static int pp_check(int key, int pp, int nx)
+{
+ int access;
+
+ /* Compute access rights */
+ access = 0;
+ if (key == 0) {
+ switch (pp) {
+ case 0x0:
+ case 0x1:
+ case 0x2:
+ access |= PAGE_WRITE;
+ /* No break here */
+ case 0x3:
+ access |= PAGE_READ;
+ break;
+ }
+ } else {
+ switch (pp) {
+ case 0x0:
+ access = 0;
+ break;
+ case 0x1:
+ case 0x3:
+ access = PAGE_READ;
+ break;
+ case 0x2:
+ access = PAGE_READ | PAGE_WRITE;
+ break;
+ }
+ }
+ if (nx == 0) {
+ access |= PAGE_EXEC;
+ }
+
+ return access;
+}
+
+static int check_prot(int prot, 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 ppc6xx_tlb_pte_check(mmu_ctx_t *ctx, 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 */
+ ptev = pte_is_valid(pte0);
+ pteh = (pte0 >> 6) & 1;
+ if (ptev && h == pteh) {
+ /* Check vsid & api */
+ ptem = pte0 & PTE_PTEM_MASK;
+ mmask = PTE_CHECK_MASK;
+ pp = pte1 & 0x00000003;
+ if (ptem == ctx->ptem) {
+ if (ctx->raddr != (hwaddr)-1ULL) {
+ /* all matches should have equal RPN, WIMG & PP */
+ if ((ctx->raddr & mmask) != (pte1 & mmask)) {
+ qemu_log("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 */
+ qemu_log_mask(CPU_LOG_MMU, "PTE access granted !\n");
+ } else {
+ /* Access right violation */
+ qemu_log_mask(CPU_LOG_MMU, "PTE access rejected\n");
+ }
+ }
+ }
+
+ return ret;
+}
+
+static int pte_update_flags(mmu_ctx_t *ctx, target_ulong *pte1p,
+ int ret, 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)
+{
+ PowerPCCPU *cpu = ppc_env_get_cpu(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(CPU(cpu), 1);
+}
+
+static inline void ppc6xx_tlb_invalidate_virt2(CPUPPCState *env,
+ target_ulong eaddr,
+ int is_code, int match_epn)
+{
+#if !defined(FLUSH_ALL_TLBS)
+ CPUState *cs = CPU(ppc_env_get_cpu(env));
+ ppc6xx_tlb_t *tlb;
+ int way, nr;
+
+ /* Invalidate ITLB + DTLB, all ways */
+ for (way = 0; way < env->nb_ways; way++) {
+ nr = ppc6xx_tlb_getnum(env, eaddr, way, is_code);
+ tlb = &env->tlb.tlb6[nr];
+ if (pte_is_valid(tlb->pte0) && (match_epn == 0 || eaddr == tlb->EPN)) {
+ LOG_SWTLB("TLB invalidate %d/%d " TARGET_FMT_lx "\n", nr,
+ env->nb_tlb, eaddr);
+ pte_invalidate(&tlb->pte0);
+ tlb_flush_page(cs, tlb->EPN);
+ }
+ }
+#else
+ /* XXX: PowerPC specification say this is valid as well */
+ ppc6xx_tlb_invalidate_all(env);
+#endif
+}
+
+static inline void ppc6xx_tlb_invalidate_virt(CPUPPCState *env,
+ target_ulong eaddr, int is_code)
+{
+ ppc6xx_tlb_invalidate_virt2(env, eaddr, is_code, 0);
+}
+
+static void ppc6xx_tlb_store(CPUPPCState *env, target_ulong EPN, int way,
+ int is_code, target_ulong pte0, target_ulong pte1)
+{
+ ppc6xx_tlb_t *tlb;
+ int nr;
+
+ nr = ppc6xx_tlb_getnum(env, EPN, way, is_code);
+ tlb = &env->tlb.tlb6[nr];
+ LOG_SWTLB("Set TLB %d/%d EPN " TARGET_FMT_lx " PTE0 " TARGET_FMT_lx
+ " PTE1 " TARGET_FMT_lx "\n", nr, env->nb_tlb, EPN, pte0, pte1);
+ /* Invalidate any pending reference in QEMU for this virtual address */
+ ppc6xx_tlb_invalidate_virt2(env, EPN, is_code, 1);
+ tlb->pte0 = pte0;
+ tlb->pte1 = pte1;
+ tlb->EPN = EPN;
+ /* Store last way for LRU mechanism */
+ env->last_way = way;
+}
+
+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 (ppc6xx_tlb_pte_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 int get_bat_6xx_tlb(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;
+ 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;
+}
+
+/* Perform segment based translation */
+static inline int get_segment_6xx_tlb(CPUPPCState *env, mmu_ctx_t *ctx,
+ target_ulong eaddr, int rw, int type)
+{
+ hwaddr hash;
+ target_ulong vsid;
+ int ds, pr, target_page_bits;
+ int ret;
+ target_ulong sr, pgidx;
+
+ pr = msr_pr;
+ ctx->eaddr = eaddr;
+
+ sr = env->sr[eaddr >> 28];
+ ctx->key = (((sr & 0x20000000) && (pr != 0)) ||
+ ((sr & 0x40000000) && (pr == 0))) ? 1 : 0;
+ ds = sr & 0x80000000 ? 1 : 0;
+ ctx->nx = sr & 0x10000000 ? 1 : 0;
+ vsid = sr & 0x00FFFFFF;
+ target_page_bits = TARGET_PAGE_BITS;
+ qemu_log_mask(CPU_LOG_MMU,
+ "Check segment v=" TARGET_FMT_lx " %d " TARGET_FMT_lx
+ " nip=" TARGET_FMT_lx " lr=" TARGET_FMT_lx
+ " ir=%d dr=%d pr=%d %d t=%d\n",
+ eaddr, (int)(eaddr >> 28), sr, env->nip, env->lr, (int)msr_ir,
+ (int)msr_dr, pr != 0 ? 1 : 0, rw, type);
+ pgidx = (eaddr & ~SEGMENT_MASK_256M) >> target_page_bits;
+ hash = vsid ^ pgidx;
+ ctx->ptem = (vsid << 7) | (pgidx >> 10);
+
+ qemu_log_mask(CPU_LOG_MMU,
+ "pte segment: key=%d ds %d nx %d vsid " TARGET_FMT_lx "\n",
+ ctx->key, ds, ctx->nx, vsid);
+ ret = -1;
+ if (!ds) {
+ /* Check if instruction fetch is allowed, if needed */
+ if (type != ACCESS_CODE || ctx->nx == 0) {
+ /* Page address translation */
+ qemu_log_mask(CPU_LOG_MMU, "htab_base " TARGET_FMT_plx
+ " htab_mask " TARGET_FMT_plx
+ " hash " TARGET_FMT_plx "\n",
+ env->htab_base, env->htab_mask, hash);
+ ctx->hash[0] = hash;
+ ctx->hash[1] = ~hash;
+
+ /* Initialize real address with an invalid value */
+ ctx->raddr = (hwaddr)-1ULL;
+ /* Software TLB search */
+ ret = ppc6xx_tlb_check(env, ctx, eaddr, rw, type);
+#if defined(DUMP_PAGE_TABLES)
+ if (qemu_log_enabled()) {
+ hwaddr 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 {
+ qemu_log_mask(CPU_LOG_MMU, "No access allowed\n");
+ ret = -3;
+ }
+ } else {
+ target_ulong sr;
+
+ qemu_log_mask(CPU_LOG_MMU, "direct store...\n");
+ /* Direct-store segment : absolutely *BUGGY* for now */
+
+ /* Direct-store implies a 32-bit MMU.
+ * Check the Segment Register's bus unit ID (BUID).
+ */
+ sr = env->sr[eaddr >> 28];
+ if ((sr & 0x1FF00000) >> 20 == 0x07f) {
+ /* Memory-forced I/O controller interface access */
+ /* If T=1 and BUID=x'07F', the 601 performs a memory access
+ * to SR[28-31] LA[4-31], bypassing all protection mechanisms.
+ */
+ ctx->raddr = ((sr & 0xF) << 28) | (eaddr & 0x0FFFFFFF);
+ ctx->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
+ return 0;
+ }
+
+ switch (type) {
+ case ACCESS_INT:
+ /* Integer load/store : only access allowed */
+ break;
+ case ACCESS_CODE:
+ /* No code fetch is allowed in direct-store areas */
+ return -4;
+ case ACCESS_FLOAT:
+ /* Floating point load/store */
+ return -4;
+ case ACCESS_RES:
+ /* lwarx, ldarx or srwcx. */
+ return -4;
+ case ACCESS_CACHE:
+ /* dcba, dcbt, dcbtst, dcbf, dcbi, dcbst, dcbz, or icbi */
+ /* Should make the instruction do no-op.
+ * As it already do no-op, it's quite easy :-)
+ */
+ ctx->raddr = eaddr;
+ return 0;
+ case ACCESS_EXT:
+ /* eciwx or ecowx */
+ return -4;
+ default:
+ qemu_log("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 */
+static int ppcemb_tlb_check(CPUPPCState *env, ppcemb_tlb_t *tlb,
+ hwaddr *raddrp,
+ target_ulong address, uint32_t pid, int ext,
+ int i)
+{
+ target_ulong mask;
+
+ /* Check valid flag */
+ if (!(tlb->prot & PAGE_VALID)) {
+ return -1;
+ }
+ mask = ~(tlb->size - 1);
+ LOG_SWTLB("%s: TLB %d address " TARGET_FMT_lx " PID %u <=> " TARGET_FMT_lx
+ " " TARGET_FMT_lx " %u %x\n", __func__, i, address, pid, tlb->EPN,
+ mask, (uint32_t)tlb->PID, tlb->prot);
+ /* Check PID */
+ if (tlb->PID != 0 && tlb->PID != pid) {
+ return -1;
+ }
+ /* Check effective address */
+ if ((address & mask) != tlb->EPN) {
+ return -1;
+ }
+ *raddrp = (tlb->RPN & mask) | (address & ~mask);
+ if (ext) {
+ /* Extend the physical address to 36 bits */
+ *raddrp |= (uint64_t)(tlb->RPN & 0xF) << 32;
+ }
+
+ return 0;
+}
+
+/* Generic TLB search function for PowerPC embedded implementations */
+static int ppcemb_tlb_search(CPUPPCState *env, target_ulong address,
+ uint32_t pid)
+{
+ ppcemb_tlb_t *tlb;
+ hwaddr raddr;
+ int i, ret;
+
+ /* Default return value is no match */
+ ret = -1;
+ for (i = 0; i < env->nb_tlb; i++) {
+ tlb = &env->tlb.tlbe[i];
+ if (ppcemb_tlb_check(env, tlb, &raddr, address, pid, 0, i) == 0) {
+ ret = i;
+ break;
+ }
+ }
+
+ return ret;
+}
+
+/* Helpers specific to PowerPC 40x implementations */
+static inline void ppc4xx_tlb_invalidate_all(CPUPPCState *env)
+{
+ PowerPCCPU *cpu = ppc_env_get_cpu(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(CPU(cpu), 1);
+}
+
+static inline void ppc4xx_tlb_invalidate_virt(CPUPPCState *env,
+ target_ulong eaddr, uint32_t pid)
+{
+#if !defined(FLUSH_ALL_TLBS)
+ CPUState *cs = CPU(ppc_env_get_cpu(env));
+ ppcemb_tlb_t *tlb;
+ hwaddr 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(cs, 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;
+ hwaddr raddr;
+ int i, ret, zsel, zpr, pr;
+
+ ret = -1;
+ raddr = (hwaddr)-1ULL;
+ pr = msr_pr;
+ for (i = 0; i < env->nb_tlb; i++) {
+ tlb = &env->tlb.tlbe[i];
+ if (ppcemb_tlb_check(env, tlb, &raddr, address,
+ env->spr[SPR_40x_PID], 0, i) < 0) {
+ continue;
+ }
+ zsel = (tlb->attr >> 4) & 0xF;
+ zpr = (env->spr[SPR_40x_ZPR] >> (30 - (2 * zsel))) & 0x3;
+ LOG_SWTLB("%s: TLB %d zsel %d zpr %d 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)
+{
+ PowerPCCPU *cpu = ppc_env_get_cpu(env);
+
+ /* XXX: TO BE FIXED */
+ if (val != 0x00000000) {
+ cpu_abort(CPU(cpu), "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,
+ hwaddr *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;
+ hwaddr raddr;
+ int i, ret;
+
+ ret = -1;
+ raddr = (hwaddr)-1ULL;
+ for (i = 0; i < env->nb_tlb; i++) {
+ tlb = &env->tlb.tlbe[i];
+ ret = mmubooke_check_tlb(env, tlb, &raddr, &ctx->prot, address, 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;
+}
+
+static void booke206_flush_tlb(CPUPPCState *env, int flags,
+ const int check_iprot)
+{
+ PowerPCCPU *cpu = ppc_env_get_cpu(env);
+ 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(CPU(cpu), 1);
+}
+
+static hwaddr booke206_tlb_to_page_size(CPUPPCState *env,
+ ppcmas_tlb_t *tlb)
+{
+ int tlbm_size;
+
+ tlbm_size = (tlb->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT;
+
+ return 1024ULL << tlbm_size;
+}
+
+/* TLB check function for MAS based SoftTLBs */
+static int ppcmas_tlb_check(CPUPPCState *env, ppcmas_tlb_t *tlb,
+ hwaddr *raddrp, target_ulong address,
+ uint32_t pid)
+{
+ hwaddr mask;
+ uint32_t tlb_pid;
+
+ if (!msr_cm) {
+ /* In 32bit mode we can only address 32bit EAs */
+ address = (uint32_t)address;
+ }
+
+ /* Check valid flag */
+ if (!(tlb->mas1 & MAS1_VALID)) {
+ return -1;
+ }
+
+ mask = ~(booke206_tlb_to_page_size(env, tlb) - 1);
+ LOG_SWTLB("%s: TLB ADDR=0x" TARGET_FMT_lx " PID=0x%x MAS1=0x%x MAS2=0x%"
+ PRIx64 " mask=0x" 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,
+ hwaddr *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;
+ hwaddr raddr;
+ int i, j, ret;
+
+ ret = -1;
+ raddr = (hwaddr)-1ULL;
+
+ for (i = 0; i < BOOKE206_MAX_TLBN; i++) {
+ int ways = booke206_tlb_ways(env, i);
+
+ for (j = 0; j < ways; j++) {
+ tlb = booke206_get_tlbm(env, i, address, j);
+ if (!tlb) {
+ continue;
+ }
+ ret = mmubooke206_check_tlb(env, tlb, &raddr, &ctx->prot, address,
+ 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++) {
+ hwaddr ea, pa;
+ target_ulong mask;
+ uint64_t size = (uint64_t)entry->size;
+ char size_buf[20];
+
+ /* Check valid flag */
+ if (!(entry->prot & PAGE_VALID)) {
+ continue;
+ }
+
+ mask = ~(entry->size - 1);
+ ea = entry->EPN & mask;
+ pa = entry->RPN & mask;
+ /* Extend the physical address to 36 bits */
+ pa |= (hwaddr)(entry->RPN & 0xF) << 32;
+ 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++) {
+ hwaddr ea, pa, size;
+ int tsize;
+
+ if (!(entry->mas1 & MAS1_VALID)) {
+ continue;
+ }
+
+ tsize = (entry->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT;
+ size = 1024ULL << tsize;
+ ea = entry->mas2 & ~(size - 1);
+ pa = entry->mas7_3 & ~(size - 1);
+
+ 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;
+ }
+}
+
+static void mmu6xx_dump_BATs(FILE *f, fprintf_function cpu_fprintf,
+ CPUPPCState *env, int type)
+{
+ target_ulong *BATlt, *BATut, *BATu, *BATl;
+ target_ulong BEPIl, BEPIu, bl;
+ int i;
+
+ switch (type) {
+ case ACCESS_CODE:
+ BATlt = env->IBAT[1];
+ BATut = env->IBAT[0];
+ break;
+ default:
+ BATlt = env->DBAT[1];
+ BATut = env->DBAT[0];
+ break;
+ }
+
+ for (i = 0; i < env->nb_BATs; i++) {
+ BATu = &BATut[i];
+ BATl = &BATlt[i];
+ BEPIu = *BATu & 0xF0000000;
+ BEPIl = *BATu & 0x0FFE0000;
+ bl = (*BATu & 0x00001FFC) << 15;
+ cpu_fprintf(f, "%s BAT%d BATu " TARGET_FMT_lx
+ " BATl " TARGET_FMT_lx "\n\t" TARGET_FMT_lx " "
+ TARGET_FMT_lx " " TARGET_FMT_lx "\n",
+ type == ACCESS_CODE ? "code" : "data", i,
+ *BATu, *BATl, BEPIu, BEPIl, bl);
+ }
+}
+
+static void mmu6xx_dump_mmu(FILE *f, fprintf_function cpu_fprintf,
+ CPUPPCState *env)
+{
+ ppc6xx_tlb_t *tlb;
+ target_ulong sr;
+ int type, way, entry, i;
+
+ cpu_fprintf(f, "HTAB base = 0x%"HWADDR_PRIx"\n", env->htab_base);
+ cpu_fprintf(f, "HTAB mask = 0x%"HWADDR_PRIx"\n", env->htab_mask);
+
+ cpu_fprintf(f, "\nSegment registers:\n");
+ for (i = 0; i < 32; i++) {
+ sr = env->sr[i];
+ if (sr & 0x80000000) {
+ cpu_fprintf(f, "%02d T=%d Ks=%d Kp=%d BUID=0x%03x "
+ "CNTLR_SPEC=0x%05x\n", i,
+ sr & 0x80000000 ? 1 : 0, sr & 0x40000000 ? 1 : 0,
+ sr & 0x20000000 ? 1 : 0, (uint32_t)((sr >> 20) & 0x1FF),
+ (uint32_t)(sr & 0xFFFFF));
+ } else {
+ cpu_fprintf(f, "%02d T=%d Ks=%d Kp=%d N=%d VSID=0x%06x\n", i,
+ sr & 0x80000000 ? 1 : 0, sr & 0x40000000 ? 1 : 0,
+ sr & 0x20000000 ? 1 : 0, sr & 0x10000000 ? 1 : 0,
+ (uint32_t)(sr & 0x00FFFFFF));
+ }
+ }
+
+ cpu_fprintf(f, "\nBATs:\n");
+ mmu6xx_dump_BATs(f, cpu_fprintf, env, ACCESS_INT);
+ mmu6xx_dump_BATs(f, cpu_fprintf, env, ACCESS_CODE);
+
+ if (env->id_tlbs != 1) {
+ cpu_fprintf(f, "ERROR: 6xx MMU should have separated TLB"
+ " for code and data\n");
+ }
+
+ cpu_fprintf(f, "\nTLBs [EPN EPN + SIZE]\n");
+
+ for (type = 0; type < 2; type++) {
+ for (way = 0; way < env->nb_ways; way++) {
+ for (entry = env->nb_tlb * type + env->tlb_per_way * way;
+ entry < (env->nb_tlb * type + env->tlb_per_way * (way + 1));
+ entry++) {
+
+ tlb = &env->tlb.tlb6[entry];
+ cpu_fprintf(f, "%s TLB %02d/%02d way:%d %s ["
+ TARGET_FMT_lx " " TARGET_FMT_lx "]\n",
+ type ? "code" : "data", entry % env->nb_tlb,
+ env->nb_tlb, way,
+ pte_is_valid(tlb->pte0) ? "valid" : "inval",
+ tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE);
+ }
+ }
+ }
+}
+
+void dump_mmu(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;
+ case POWERPC_MMU_SOFT_6xx:
+ case POWERPC_MMU_SOFT_74xx:
+ mmu6xx_dump_mmu(f, cpu_fprintf, env);
+ break;
+#if defined(TARGET_PPC64)
+ case POWERPC_MMU_64B:
+ case POWERPC_MMU_2_06:
+ case POWERPC_MMU_2_06a:
+ case POWERPC_MMU_2_06d:
+ dump_slb(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_SOFT_6xx:
+ case POWERPC_MMU_SOFT_74xx:
+ case POWERPC_MMU_SOFT_4xx:
+ case POWERPC_MMU_REAL:
+ case POWERPC_MMU_BOOKE:
+ ctx->prot |= PAGE_WRITE;
+ break;
+
+ case POWERPC_MMU_SOFT_4xx_Z:
+ if (unlikely(msr_pe != 0)) {
+ /* 403 family add some particular protections,
+ * using PBL/PBU registers for accesses with no translation.
+ */
+ in_plb =
+ /* Check PLB validity */
+ (env->pb[0] < env->pb[1] &&
+ /* and address in plb area */
+ eaddr >= env->pb[0] && eaddr < env->pb[1]) ||
+ (env->pb[2] < env->pb[3] &&
+ eaddr >= env->pb[2] && eaddr < env->pb[3]) ? 1 : 0;
+ if (in_plb ^ msr_px) {
+ /* Access in protected area */
+ if (rw == 1) {
+ /* Access is not allowed */
+ ret = -2;
+ }
+ } else {
+ /* Read-write access is allowed */
+ ctx->prot |= PAGE_WRITE;
+ }
+ }
+ break;
+
+ default:
+ /* Caller's checks mean we should never get here for other models */
+ abort();
+ return -1;
+ }
+
+ return ret;
+}
+
+static int get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
+ target_ulong eaddr, int rw, int access_type)
+{
+ PowerPCCPU *cpu = ppc_env_get_cpu(env);
+ int ret = -1;
+ bool real_mode = (access_type == ACCESS_CODE && msr_ir == 0)
+ || (access_type != ACCESS_CODE && msr_dr == 0);
+
+#if 0
+ qemu_log("%s\n", __func__);
+#endif
+
+ switch (env->mmu_model) {
+ case POWERPC_MMU_SOFT_6xx:
+ case POWERPC_MMU_SOFT_74xx:
+ if (real_mode) {
+ ret = check_physical(env, ctx, eaddr, rw);
+ } else {
+ /* Try to find a BAT */
+ if (env->nb_BATs != 0) {
+ ret = get_bat_6xx_tlb(env, ctx, eaddr, rw, access_type);
+ }
+ if (ret < 0) {
+ /* We didn't match any BAT entry or don't have BATs */
+ ret = get_segment_6xx_tlb(env, ctx, eaddr, rw, access_type);
+ }
+ }
+ break;
+
+ case POWERPC_MMU_SOFT_4xx:
+ case POWERPC_MMU_SOFT_4xx_Z:
+ if (real_mode) {
+ ret = check_physical(env, ctx, eaddr, rw);
+ } else {
+ 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(CPU(cpu), "MPC8xx MMU model is not implemented\n");
+ break;
+ case POWERPC_MMU_REAL:
+ if (real_mode) {
+ ret = check_physical(env, ctx, eaddr, rw);
+ } else {
+ cpu_abort(CPU(cpu), "PowerPC in real mode do not do any translation\n");
+ }
+ return -1;
+ default:
+ cpu_abort(CPU(cpu), "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;
+}
+
+hwaddr ppc_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
+{
+ PowerPCCPU *cpu = POWERPC_CPU(cs);
+ CPUPPCState *env = &cpu->env;
+ mmu_ctx_t ctx;
+
+ switch (env->mmu_model) {
+#if defined(TARGET_PPC64)
+ case POWERPC_MMU_64B:
+ case POWERPC_MMU_2_06:
+ case POWERPC_MMU_2_06a:
+ case POWERPC_MMU_2_06d:
+ return ppc_hash64_get_phys_page_debug(env, addr);
+#endif
+
+ case POWERPC_MMU_32B:
+ case POWERPC_MMU_601:
+ return ppc_hash32_get_phys_page_debug(env, addr);
+
+ default:
+ ;
+ }
+
+ if (unlikely(get_physical_address(env, &ctx, addr, 0, ACCESS_INT) != 0)) {
+
+ /* Some MMUs have separate TLBs for code and data. If we only try an
+ * ACCESS_INT, we may not be able to read instructions mapped by code
+ * TLBs, so we also try a ACCESS_CODE.
+ */
+ if (unlikely(get_physical_address(env, &ctx, addr, 0,
+ ACCESS_CODE) != 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 */
+static int cpu_ppc_handle_mmu_fault(CPUPPCState *env, target_ulong address,
+ int rw, int mmu_idx)
+{
+ CPUState *cs = CPU(ppc_env_get_cpu(env));
+ 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(cs, address & TARGET_PAGE_MASK,
+ ctx.raddr & TARGET_PAGE_MASK, ctx.prot,
+ mmu_idx, TARGET_PAGE_SIZE);
+ ret = 0;
+ } else if (ret < 0) {
+ LOG_MMU_STATE(cs);
+ if (access_type == ACCESS_CODE) {
+ switch (ret) {
+ case -1:
+ /* No matches in page tables or TLB */
+ switch (env->mmu_model) {
+ case POWERPC_MMU_SOFT_6xx:
+ cs->exception_index = POWERPC_EXCP_IFTLB;
+ env->error_code = 1 << 18;
+ env->spr[SPR_IMISS] = address;
+ env->spr[SPR_ICMP] = 0x80000000 | ctx.ptem;
+ goto tlb_miss;
+ case POWERPC_MMU_SOFT_74xx:
+ cs->exception_index = POWERPC_EXCP_IFTLB;
+ goto tlb_miss_74xx;
+ case POWERPC_MMU_SOFT_4xx:
+ case POWERPC_MMU_SOFT_4xx_Z:
+ cs->exception_index = POWERPC_EXCP_ITLB;
+ env->error_code = 0;
+ env->spr[SPR_40x_DEAR] = address;
+ env->spr[SPR_40x_ESR] = 0x00000000;
+ break;
+ case POWERPC_MMU_BOOKE206:
+ booke206_update_mas_tlb_miss(env, address, rw);
+ /* fall through */
+ case POWERPC_MMU_BOOKE:
+ cs->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(cs, "MPC8xx MMU model is not implemented\n");
+ break;
+ case POWERPC_MMU_REAL:
+ cpu_abort(cs, "PowerPC in real mode should never raise "
+ "any MMU exceptions\n");
+ return -1;
+ default:
+ cpu_abort(cs, "Unknown or invalid MMU model\n");
+ return -1;
+ }
+ break;
+ case -2:
+ /* Access rights violation */
+ cs->exception_index = POWERPC_EXCP_ISI;
+ env->error_code = 0x08000000;
+ break;
+ case -3:
+ /* No execute protection violation */
+ if ((env->mmu_model == POWERPC_MMU_BOOKE) ||
+ (env->mmu_model == POWERPC_MMU_BOOKE206)) {
+ env->spr[SPR_BOOKE_ESR] = 0x00000000;
+ }
+ cs->exception_index = POWERPC_EXCP_ISI;
+ env->error_code = 0x10000000;
+ break;
+ case -4:
+ /* Direct store exception */
+ /* No code fetch is allowed in direct-store areas */
+ cs->exception_index = POWERPC_EXCP_ISI;
+ env->error_code = 0x10000000;
+ break;
+ }
+ } else {
+ switch (ret) {
+ case -1:
+ /* No matches in page tables or TLB */
+ switch (env->mmu_model) {
+ case POWERPC_MMU_SOFT_6xx:
+ if (rw == 1) {
+ cs->exception_index = POWERPC_EXCP_DSTLB;
+ env->error_code = 1 << 16;
+ } else {
+ cs->exception_index = POWERPC_EXCP_DLTLB;
+ env->error_code = 0;
+ }
+ env->spr[SPR_DMISS] = address;
+ env->spr[SPR_DCMP] = 0x80000000 | ctx.ptem;
+ tlb_miss:
+ env->error_code |= ctx.key << 19;
+ env->spr[SPR_HASH1] = env->htab_base +
+ get_pteg_offset32(env, ctx.hash[0]);
+ env->spr[SPR_HASH2] = env->htab_base +
+ get_pteg_offset32(env, ctx.hash[1]);
+ break;
+ case POWERPC_MMU_SOFT_74xx:
+ if (rw == 1) {
+ cs->exception_index = POWERPC_EXCP_DSTLB;
+ } else {
+ cs->exception_index = POWERPC_EXCP_DLTLB;
+ }
+ tlb_miss_74xx:
+ /* Implement LRU algorithm */
+ env->error_code = ctx.key << 19;
+ env->spr[SPR_TLBMISS] = (address & ~((target_ulong)0x3)) |
+ ((env->last_way + 1) & (env->nb_ways - 1));
+ env->spr[SPR_PTEHI] = 0x80000000 | ctx.ptem;
+ break;
+ case POWERPC_MMU_SOFT_4xx:
+ case POWERPC_MMU_SOFT_4xx_Z:
+ cs->exception_index = POWERPC_EXCP_DTLB;
+ env->error_code = 0;
+ env->spr[SPR_40x_DEAR] = address;
+ if (rw) {
+ env->spr[SPR_40x_ESR] = 0x00800000;
+ } else {
+ env->spr[SPR_40x_ESR] = 0x00000000;
+ }
+ break;
+ case POWERPC_MMU_MPC8xx:
+ /* XXX: TODO */
+ cpu_abort(cs, "MPC8xx MMU model is not implemented\n");
+ break;
+ case POWERPC_MMU_BOOKE206:
+ booke206_update_mas_tlb_miss(env, address, rw);
+ /* fall through */
+ case POWERPC_MMU_BOOKE:
+ cs->exception_index = POWERPC_EXCP_DTLB;
+ env->error_code = 0;
+ env->spr[SPR_BOOKE_DEAR] = address;
+ env->spr[SPR_BOOKE_ESR] = rw ? ESR_ST : 0;
+ return -1;
+ case POWERPC_MMU_REAL:
+ cpu_abort(cs, "PowerPC in real mode should never raise "
+ "any MMU exceptions\n");
+ return -1;
+ default:
+ cpu_abort(cs, "Unknown or invalid MMU model\n");
+ return -1;
+ }
+ break;
+ case -2:
+ /* Access rights violation */
+ cs->exception_index = POWERPC_EXCP_DSI;
+ env->error_code = 0;
+ if (env->mmu_model == POWERPC_MMU_SOFT_4xx
+ || env->mmu_model == POWERPC_MMU_SOFT_4xx_Z) {
+ env->spr[SPR_40x_DEAR] = address;
+ if (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 */
+ cs->exception_index = POWERPC_EXCP_ALIGN;
+ env->error_code = POWERPC_EXCP_ALIGN_FP;
+ env->spr[SPR_DAR] = address;
+ break;
+ case ACCESS_RES:
+ /* lwarx, ldarx or stwcx. */
+ cs->exception_index = POWERPC_EXCP_DSI;
+ env->error_code = 0;
+ env->spr[SPR_DAR] = address;
+ if (rw == 1) {
+ env->spr[SPR_DSISR] = 0x06000000;
+ } else {
+ env->spr[SPR_DSISR] = 0x04000000;
+ }
+ break;
+ case ACCESS_EXT:
+ /* eciwx or ecowx */
+ cs->exception_index = POWERPC_EXCP_DSI;
+ env->error_code = 0;
+ env->spr[SPR_DAR] = address;
+ if (rw == 1) {
+ env->spr[SPR_DSISR] = 0x06100000;
+ } else {
+ env->spr[SPR_DSISR] = 0x04100000;
+ }
+ break;
+ default:
+ printf("DSI: invalid exception (%d)\n", ret);
+ cs->exception_index = POWERPC_EXCP_PROGRAM;
+ env->error_code =
+ POWERPC_EXCP_INVAL | POWERPC_EXCP_INVAL_INVAL;
+ env->spr[SPR_DAR] = address;
+ break;
+ }
+ break;
+ }
+ }
+#if 0
+ printf("%s: set exception to %d %02x\n", __func__,
+ cs->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)
+{
+ CPUState *cs = CPU(ppc_env_get_cpu(env));
+ 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(cs, 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 helper_store_ibatu(CPUPPCState *env, uint32_t 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 helper_store_ibatl(CPUPPCState *env, uint32_t nr, target_ulong value)
+{
+ dump_store_bat(env, 'I', 1, nr, value);
+ env->IBAT[1][nr] = value;
+}
+
+void helper_store_dbatu(CPUPPCState *env, uint32_t 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 helper_store_dbatl(CPUPPCState *env, uint32_t nr, target_ulong value)
+{
+ dump_store_bat(env, 'D', 1, nr, value);
+ env->DBAT[1][nr] = value;
+}
+
+void helper_store_601_batu(CPUPPCState *env, uint32_t 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 helper_store_601_batl(CPUPPCState *env, uint32_t nr, target_ulong value)
+{
+#if !defined(FLUSH_ALL_TLBS)
+ target_ulong mask;
+#else
+ 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)
+{
+ PowerPCCPU *cpu = ppc_env_get_cpu(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(CPU(cpu), "No TLB for PowerPC 4xx in real mode\n");
+ break;
+ case POWERPC_MMU_MPC8xx:
+ /* XXX: TODO */
+ cpu_abort(CPU(cpu), "MPC8xx MMU model is not implemented\n");
+ break;
+ case POWERPC_MMU_BOOKE:
+ tlb_flush(CPU(cpu), 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_64B:
+ case POWERPC_MMU_2_06:
+ case POWERPC_MMU_2_06a:
+ case POWERPC_MMU_2_06d:
+#endif /* defined(TARGET_PPC64) */
+ tlb_flush(CPU(cpu), 1);
+ break;
+ default:
+ /* XXX: TODO */
+ cpu_abort(CPU(cpu), "Unknown MMU model\n");
+ break;
+ }
+}
+
+void ppc_tlb_invalidate_one(CPUPPCState *env, target_ulong addr)
+{
+#if !defined(FLUSH_ALL_TLBS)
+ PowerPCCPU *cpu = ppc_env_get_cpu(env);
+ CPUState *cs;
+
+ 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(CPU(cpu), "No TLB for PowerPC 4xx in real mode\n");
+ break;
+ case POWERPC_MMU_MPC8xx:
+ /* XXX: TODO */
+ cpu_abort(CPU(cpu), "MPC8xx MMU model is not implemented\n");
+ break;
+ case POWERPC_MMU_BOOKE:
+ /* XXX: TODO */
+ cpu_abort(CPU(cpu), "BookE MMU model is not implemented\n");
+ break;
+ case POWERPC_MMU_BOOKE206:
+ /* XXX: TODO */
+ cpu_abort(CPU(cpu), "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);
+ cs = CPU(cpu);
+ /* XXX: this case should be optimized,
+ * giving a mask to tlb_flush_page
+ */
+ tlb_flush_page(cs, addr | (0x0 << 28));
+ tlb_flush_page(cs, addr | (0x1 << 28));
+ tlb_flush_page(cs, addr | (0x2 << 28));
+ tlb_flush_page(cs, addr | (0x3 << 28));
+ tlb_flush_page(cs, addr | (0x4 << 28));
+ tlb_flush_page(cs, addr | (0x5 << 28));
+ tlb_flush_page(cs, addr | (0x6 << 28));
+ tlb_flush_page(cs, addr | (0x7 << 28));
+ tlb_flush_page(cs, addr | (0x8 << 28));
+ tlb_flush_page(cs, addr | (0x9 << 28));
+ tlb_flush_page(cs, addr | (0xA << 28));
+ tlb_flush_page(cs, addr | (0xB << 28));
+ tlb_flush_page(cs, addr | (0xC << 28));
+ tlb_flush_page(cs, addr | (0xD << 28));
+ tlb_flush_page(cs, addr | (0xE << 28));
+ tlb_flush_page(cs, addr | (0xF << 28));
+ break;
+#if defined(TARGET_PPC64)
+ case POWERPC_MMU_64B:
+ case POWERPC_MMU_2_06:
+ case POWERPC_MMU_2_06a:
+ case POWERPC_MMU_2_06d:
+ /* 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(CPU(cpu), 1);
+ break;
+#endif /* defined(TARGET_PPC64) */
+ default:
+ /* XXX: TODO */
+ cpu_abort(CPU(cpu), "Unknown MMU model\n");
+ break;
+ }
+#else
+ ppc_tlb_invalidate_all(env);
+#endif
+}
+
+/*****************************************************************************/
+/* Special registers manipulation */
+void ppc_store_sdr1(CPUPPCState *env, target_ulong value)
+{
+ qemu_log_mask(CPU_LOG_MMU, "%s: " TARGET_FMT_lx "\n", __func__, value);
+ assert(!env->external_htab);
+ 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 - 7)) - 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;
+ }
+}
+
+/* Segment registers load and store */
+target_ulong helper_load_sr(CPUPPCState *env, target_ulong sr_num)
+{
+#if defined(TARGET_PPC64)
+ if (env->mmu_model & POWERPC_MMU_64) {
+ /* XXX */
+ return 0;
+ }
+#endif
+ return env->sr[sr_num];
+}
+
+void helper_store_sr(CPUPPCState *env, target_ulong srnum, target_ulong value)
+{
+ PowerPCCPU *cpu = ppc_env_get_cpu(env);
+
+ qemu_log_mask(CPU_LOG_MMU,
+ "%s: reg=%d " TARGET_FMT_lx " " TARGET_FMT_lx "\n", __func__,
+ (int)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 |= SLB_ESID_V;
+ /* 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(CPU(cpu), page);
+ }
+ }
+#else
+ tlb_flush(CPU(cpu), 1);
+#endif
+ }
+}
+
+/* TLB management */
+void helper_tlbia(CPUPPCState *env)
+{
+ ppc_tlb_invalidate_all(env);
+}
+
+void helper_tlbie(CPUPPCState *env, target_ulong addr)
+{
+ ppc_tlb_invalidate_one(env, addr);
+}
+
+/* Software driven TLBs management */
+/* PowerPC 602/603 software TLB load instructions helpers */
+static void do_6xx_tlb(CPUPPCState *env, target_ulong new_EPN, int is_code)
+{
+ target_ulong RPN, CMP, EPN;
+ int way;
+
+ RPN = env->spr[SPR_RPA];
+ if (is_code) {
+ CMP = env->spr[SPR_ICMP];
+ EPN = env->spr[SPR_IMISS];
+ } else {
+ CMP = env->spr[SPR_DCMP];
+ EPN = env->spr[SPR_DMISS];
+ }
+ way = (env->spr[SPR_SRR1] >> 17) & 1;
+ (void)EPN; /* avoid a compiler warning */
+ LOG_SWTLB("%s: EPN " TARGET_FMT_lx " " TARGET_FMT_lx " PTE0 " TARGET_FMT_lx
+ " PTE1 " TARGET_FMT_lx " way %d\n", __func__, new_EPN, EPN, CMP,
+ RPN, way);
+ /* Store this TLB */
+ ppc6xx_tlb_store(env, (uint32_t)(new_EPN & TARGET_PAGE_MASK),
+ way, is_code, CMP, RPN);
+}
+
+void helper_6xx_tlbd(CPUPPCState *env, target_ulong EPN)
+{
+ do_6xx_tlb(env, EPN, 0);
+}
+
+void helper_6xx_tlbi(CPUPPCState *env, target_ulong EPN)
+{
+ do_6xx_tlb(env, EPN, 1);
+}
+
+/* PowerPC 74xx software TLB load instructions helpers */
+static void do_74xx_tlb(CPUPPCState *env, target_ulong new_EPN, int is_code)
+{
+ target_ulong RPN, CMP, EPN;
+ int way;
+
+ RPN = env->spr[SPR_PTELO];
+ CMP = env->spr[SPR_PTEHI];
+ EPN = env->spr[SPR_TLBMISS] & ~0x3;
+ way = env->spr[SPR_TLBMISS] & 0x3;
+ (void)EPN; /* avoid a compiler warning */
+ LOG_SWTLB("%s: EPN " TARGET_FMT_lx " " TARGET_FMT_lx " PTE0 " TARGET_FMT_lx
+ " PTE1 " TARGET_FMT_lx " way %d\n", __func__, new_EPN, EPN, CMP,
+ RPN, way);
+ /* Store this TLB */
+ ppc6xx_tlb_store(env, (uint32_t)(new_EPN & TARGET_PAGE_MASK),
+ way, is_code, CMP, RPN);
+}
+
+void helper_74xx_tlbd(CPUPPCState *env, target_ulong EPN)
+{
+ do_74xx_tlb(env, EPN, 0);
+}
+
+void helper_74xx_tlbi(CPUPPCState *env, target_ulong EPN)
+{
+ do_74xx_tlb(env, EPN, 1);
+}
+
+/*****************************************************************************/
+/* PowerPC 601 specific instructions (POWER bridge) */
+
+target_ulong helper_rac(CPUPPCState *env, target_ulong addr)
+{
+ mmu_ctx_t ctx;
+ int nb_BATs;
+ target_ulong ret = 0;
+
+ /* We don't have to generate many instances of this instruction,
+ * as rac is supervisor only.
+ */
+ /* XXX: FIX THIS: Pretend we have no BAT */
+ nb_BATs = env->nb_BATs;
+ env->nb_BATs = 0;
+ if (get_physical_address(env, &ctx, addr, 0, ACCESS_INT) == 0) {
+ ret = ctx.raddr;
+ }
+ env->nb_BATs = nb_BATs;
+ return ret;
+}
+
+static inline target_ulong booke_tlb_to_page_size(int size)
+{
+ return 1024 << (2 * size);
+}
+
+static inline int booke_page_size_to_tlb(target_ulong page_size)
+{
+ int size;
+
+ switch (page_size) {
+ case 0x00000400UL:
+ size = 0x0;
+ break;
+ case 0x00001000UL:
+ size = 0x1;
+ break;
+ case 0x00004000UL:
+ size = 0x2;
+ break;
+ case 0x00010000UL:
+ size = 0x3;
+ break;
+ case 0x00040000UL:
+ size = 0x4;
+ break;
+ case 0x00100000UL:
+ size = 0x5;
+ break;
+ case 0x00400000UL:
+ size = 0x6;
+ break;
+ case 0x01000000UL:
+ size = 0x7;
+ break;
+ case 0x04000000UL:
+ size = 0x8;
+ break;
+ case 0x10000000UL:
+ size = 0x9;
+ break;
+ case 0x40000000UL:
+ size = 0xA;
+ break;
+#if defined(TARGET_PPC64)
+ case 0x000100000000ULL:
+ size = 0xB;
+ break;
+ case 0x000400000000ULL:
+ size = 0xC;
+ break;
+ case 0x001000000000ULL:
+ size = 0xD;
+ break;
+ case 0x004000000000ULL:
+ size = 0xE;
+ break;
+ case 0x010000000000ULL:
+ size = 0xF;
+ break;
+#endif
+ default:
+ size = -1;
+ break;
+ }
+
+ return size;
+}
+
+/* Helpers for 4xx TLB management */
+#define PPC4XX_TLB_ENTRY_MASK 0x0000003f /* Mask for 64 TLB entries */
+
+#define PPC4XX_TLBHI_V 0x00000040
+#define PPC4XX_TLBHI_E 0x00000020
+#define PPC4XX_TLBHI_SIZE_MIN 0
+#define PPC4XX_TLBHI_SIZE_MAX 7
+#define PPC4XX_TLBHI_SIZE_DEFAULT 1
+#define PPC4XX_TLBHI_SIZE_SHIFT 7
+#define PPC4XX_TLBHI_SIZE_MASK 0x00000007
+
+#define PPC4XX_TLBLO_EX 0x00000200
+#define PPC4XX_TLBLO_WR 0x00000100
+#define PPC4XX_TLBLO_ATTR_MASK 0x000000FF
+#define PPC4XX_TLBLO_RPN_MASK 0xFFFFFC00
+
+target_ulong helper_4xx_tlbre_hi(CPUPPCState *env, target_ulong entry)
+{
+ ppcemb_tlb_t *tlb;
+ target_ulong ret;
+ int size;
+
+ entry &= PPC4XX_TLB_ENTRY_MASK;
+ tlb = &env->tlb.tlbe[entry];
+ ret = tlb->EPN;
+ if (tlb->prot & PAGE_VALID) {
+ ret |= PPC4XX_TLBHI_V;
+ }
+ size = booke_page_size_to_tlb(tlb->size);
+ if (size < PPC4XX_TLBHI_SIZE_MIN || size > PPC4XX_TLBHI_SIZE_MAX) {
+ size = PPC4XX_TLBHI_SIZE_DEFAULT;
+ }
+ ret |= size << PPC4XX_TLBHI_SIZE_SHIFT;
+ env->spr[SPR_40x_PID] = tlb->PID;
+ return ret;
+}
+
+target_ulong helper_4xx_tlbre_lo(CPUPPCState *env, target_ulong entry)
+{
+ ppcemb_tlb_t *tlb;
+ target_ulong ret;
+
+ entry &= PPC4XX_TLB_ENTRY_MASK;
+ tlb = &env->tlb.tlbe[entry];
+ ret = tlb->RPN;
+ if (tlb->prot & PAGE_EXEC) {
+ ret |= PPC4XX_TLBLO_EX;
+ }
+ if (tlb->prot & PAGE_WRITE) {
+ ret |= PPC4XX_TLBLO_WR;
+ }
+ return ret;
+}
+
+void helper_4xx_tlbwe_hi(CPUPPCState *env, target_ulong entry,
+ target_ulong val)
+{
+ PowerPCCPU *cpu = ppc_env_get_cpu(env);
+ CPUState *cs = CPU(cpu);
+ ppcemb_tlb_t *tlb;
+ target_ulong page, end;
+
+ LOG_SWTLB("%s entry %d val " TARGET_FMT_lx "\n", __func__, (int)entry,
+ val);
+ entry &= PPC4XX_TLB_ENTRY_MASK;
+ tlb = &env->tlb.tlbe[entry];
+ /* Invalidate previous TLB (if it's valid) */
+ if (tlb->prot & PAGE_VALID) {
+ end = tlb->EPN + tlb->size;
+ LOG_SWTLB("%s: invalidate old TLB %d start " TARGET_FMT_lx " end "
+ TARGET_FMT_lx "\n", __func__, (int)entry, tlb->EPN, end);
+ for (page = tlb->EPN; page < end; page += TARGET_PAGE_SIZE) {
+ tlb_flush_page(cs, page);
+ }
+ }
+ tlb->size = booke_tlb_to_page_size((val >> PPC4XX_TLBHI_SIZE_SHIFT)
+ & PPC4XX_TLBHI_SIZE_MASK);
+ /* We cannot handle TLB size < TARGET_PAGE_SIZE.
+ * If this ever occurs, one should use the ppcemb target instead
+ * of the ppc or ppc64 one
+ */
+ if ((val & PPC4XX_TLBHI_V) && tlb->size < TARGET_PAGE_SIZE) {
+ cpu_abort(cs, "TLB size " TARGET_FMT_lu " < %u "
+ "are not supported (%d)\n",
+ tlb->size, TARGET_PAGE_SIZE, (int)((val >> 7) & 0x7));
+ }
+ tlb->EPN = val & ~(tlb->size - 1);
+ if (val & PPC4XX_TLBHI_V) {
+ tlb->prot |= PAGE_VALID;
+ if (val & PPC4XX_TLBHI_E) {
+ /* XXX: TO BE FIXED */
+ cpu_abort(cs,
+ "Little-endian TLB entries are not supported by now\n");
+ }
+ } else {
+ tlb->prot &= ~PAGE_VALID;
+ }
+ tlb->PID = env->spr[SPR_40x_PID]; /* PID */
+ LOG_SWTLB("%s: set up TLB %d RPN " TARGET_FMT_plx " EPN " TARGET_FMT_lx
+ " size " TARGET_FMT_lx " prot %c%c%c%c PID %d\n", __func__,
+ (int)entry, tlb->RPN, tlb->EPN, tlb->size,
+ tlb->prot & PAGE_READ ? 'r' : '-',
+ tlb->prot & PAGE_WRITE ? 'w' : '-',
+ tlb->prot & PAGE_EXEC ? 'x' : '-',
+ tlb->prot & PAGE_VALID ? 'v' : '-', (int)tlb->PID);
+ /* Invalidate new TLB (if valid) */
+ if (tlb->prot & PAGE_VALID) {
+ end = tlb->EPN + tlb->size;
+ LOG_SWTLB("%s: invalidate TLB %d start " TARGET_FMT_lx " end "
+ TARGET_FMT_lx "\n", __func__, (int)entry, tlb->EPN, end);
+ for (page = tlb->EPN; page < end; page += TARGET_PAGE_SIZE) {
+ tlb_flush_page(cs, page);
+ }
+ }
+}
+
+void helper_4xx_tlbwe_lo(CPUPPCState *env, target_ulong entry,
+ target_ulong val)
+{
+ ppcemb_tlb_t *tlb;
+
+ LOG_SWTLB("%s entry %i val " TARGET_FMT_lx "\n", __func__, (int)entry,
+ val);
+ entry &= PPC4XX_TLB_ENTRY_MASK;
+ tlb = &env->tlb.tlbe[entry];
+ tlb->attr = val & PPC4XX_TLBLO_ATTR_MASK;
+ tlb->RPN = val & PPC4XX_TLBLO_RPN_MASK;
+ tlb->prot = PAGE_READ;
+ if (val & PPC4XX_TLBLO_EX) {
+ tlb->prot |= PAGE_EXEC;
+ }
+ if (val & PPC4XX_TLBLO_WR) {
+ tlb->prot |= PAGE_WRITE;
+ }
+ LOG_SWTLB("%s: set up TLB %d RPN " TARGET_FMT_plx " EPN " TARGET_FMT_lx
+ " size " TARGET_FMT_lx " prot %c%c%c%c PID %d\n", __func__,
+ (int)entry, tlb->RPN, tlb->EPN, tlb->size,
+ tlb->prot & PAGE_READ ? 'r' : '-',
+ tlb->prot & PAGE_WRITE ? 'w' : '-',
+ tlb->prot & PAGE_EXEC ? 'x' : '-',
+ tlb->prot & PAGE_VALID ? 'v' : '-', (int)tlb->PID);
+}
+
+target_ulong helper_4xx_tlbsx(CPUPPCState *env, target_ulong address)
+{
+ return ppcemb_tlb_search(env, address, env->spr[SPR_40x_PID]);
+}
+
+/* PowerPC 440 TLB management */
+void helper_440_tlbwe(CPUPPCState *env, uint32_t word, target_ulong entry,
+ target_ulong value)
+{
+ PowerPCCPU *cpu = ppc_env_get_cpu(env);
+ ppcemb_tlb_t *tlb;
+ target_ulong EPN, RPN, size;
+ int do_flush_tlbs;
+
+ LOG_SWTLB("%s word %d entry %d value " TARGET_FMT_lx "\n",
+ __func__, word, (int)entry, value);
+ do_flush_tlbs = 0;
+ entry &= 0x3F;
+ tlb = &env->tlb.tlbe[entry];
+ switch (word) {
+ default:
+ /* Just here to please gcc */
+ case 0:
+ EPN = value & 0xFFFFFC00;
+ if ((tlb->prot & PAGE_VALID) && EPN != tlb->EPN) {
+ do_flush_tlbs = 1;
+ }
+ tlb->EPN = EPN;
+ size = booke_tlb_to_page_size((value >> 4) & 0xF);
+ if ((tlb->prot & PAGE_VALID) && tlb->size < size) {
+ do_flush_tlbs = 1;
+ }
+ tlb->size = size;
+ tlb->attr &= ~0x1;
+ tlb->attr |= (value >> 8) & 1;
+ if (value & 0x200) {
+ tlb->prot |= PAGE_VALID;
+ } else {
+ if (tlb->prot & PAGE_VALID) {
+ tlb->prot &= ~PAGE_VALID;
+ do_flush_tlbs = 1;
+ }
+ }
+ tlb->PID = env->spr[SPR_440_MMUCR] & 0x000000FF;
+ if (do_flush_tlbs) {
+ tlb_flush(CPU(cpu), 1);
+ }
+ break;
+ case 1:
+ RPN = value & 0xFFFFFC0F;
+ if ((tlb->prot & PAGE_VALID) && tlb->RPN != RPN) {
+ tlb_flush(CPU(cpu), 1);
+ }
+ tlb->RPN = RPN;
+ break;
+ case 2:
+ tlb->attr = (tlb->attr & 0x1) | (value & 0x0000FF00);
+ tlb->prot = tlb->prot & PAGE_VALID;
+ if (value & 0x1) {
+ tlb->prot |= PAGE_READ << 4;
+ }
+ if (value & 0x2) {
+ tlb->prot |= PAGE_WRITE << 4;
+ }
+ if (value & 0x4) {
+ tlb->prot |= PAGE_EXEC << 4;
+ }
+ if (value & 0x8) {
+ tlb->prot |= PAGE_READ;
+ }
+ if (value & 0x10) {
+ tlb->prot |= PAGE_WRITE;
+ }
+ if (value & 0x20) {
+ tlb->prot |= PAGE_EXEC;
+ }
+ break;
+ }
+}
+
+target_ulong helper_440_tlbre(CPUPPCState *env, uint32_t word,
+ target_ulong entry)
+{
+ ppcemb_tlb_t *tlb;
+ target_ulong ret;
+ int size;
+
+ entry &= 0x3F;
+ tlb = &env->tlb.tlbe[entry];
+ switch (word) {
+ default:
+ /* Just here to please gcc */
+ case 0:
+ ret = tlb->EPN;
+ size = booke_page_size_to_tlb(tlb->size);
+ if (size < 0 || size > 0xF) {
+ size = 1;
+ }
+ ret |= size << 4;
+ if (tlb->attr & 0x1) {
+ ret |= 0x100;
+ }
+ if (tlb->prot & PAGE_VALID) {
+ ret |= 0x200;
+ }
+ env->spr[SPR_440_MMUCR] &= ~0x000000FF;
+ env->spr[SPR_440_MMUCR] |= tlb->PID;
+ break;
+ case 1:
+ ret = tlb->RPN;
+ break;
+ case 2:
+ ret = tlb->attr & ~0x1;
+ if (tlb->prot & (PAGE_READ << 4)) {
+ ret |= 0x1;
+ }
+ if (tlb->prot & (PAGE_WRITE << 4)) {
+ ret |= 0x2;
+ }
+ if (tlb->prot & (PAGE_EXEC << 4)) {
+ ret |= 0x4;
+ }
+ if (tlb->prot & PAGE_READ) {
+ ret |= 0x8;
+ }
+ if (tlb->prot & PAGE_WRITE) {
+ ret |= 0x10;
+ }
+ if (tlb->prot & PAGE_EXEC) {
+ ret |= 0x20;
+ }
+ break;
+ }
+ return ret;
+}
+
+target_ulong helper_440_tlbsx(CPUPPCState *env, target_ulong address)
+{
+ return ppcemb_tlb_search(env, address, env->spr[SPR_440_MMUCR] & 0xFF);
+}
+
+/* PowerPC BookE 2.06 TLB management */
+
+static ppcmas_tlb_t *booke206_cur_tlb(CPUPPCState *env)
+{
+ PowerPCCPU *cpu = ppc_env_get_cpu(env);
+ uint32_t tlbncfg = 0;
+ int esel = (env->spr[SPR_BOOKE_MAS0] & MAS0_ESEL_MASK) >> MAS0_ESEL_SHIFT;
+ int ea = (env->spr[SPR_BOOKE_MAS2] & MAS2_EPN_MASK);
+ int tlb;
+
+ tlb = (env->spr[SPR_BOOKE_MAS0] & MAS0_TLBSEL_MASK) >> MAS0_TLBSEL_SHIFT;
+ tlbncfg = env->spr[SPR_BOOKE_TLB0CFG + tlb];
+
+ if ((tlbncfg & TLBnCFG_HES) && (env->spr[SPR_BOOKE_MAS0] & MAS0_HES)) {
+ cpu_abort(CPU(cpu), "we don't support HES yet\n");
+ }
+
+ return booke206_get_tlbm(env, tlb, ea, esel);
+}
+
+void helper_booke_setpid(CPUPPCState *env, uint32_t pidn, target_ulong pid)
+{
+ PowerPCCPU *cpu = ppc_env_get_cpu(env);
+
+ env->spr[pidn] = pid;
+ /* changing PIDs mean we're in a different address space now */
+ tlb_flush(CPU(cpu), 1);
+}
+
+void helper_booke206_tlbwe(CPUPPCState *env)
+{
+ PowerPCCPU *cpu = ppc_env_get_cpu(env);
+ uint32_t tlbncfg, tlbn;
+ ppcmas_tlb_t *tlb;
+ uint32_t size_tlb, size_ps;
+ target_ulong mask;
+
+
+ switch (env->spr[SPR_BOOKE_MAS0] & MAS0_WQ_MASK) {
+ case MAS0_WQ_ALWAYS:
+ /* good to go, write that entry */
+ break;
+ case MAS0_WQ_COND:
+ /* XXX check if reserved */
+ if (0) {
+ return;
+ }
+ break;
+ case MAS0_WQ_CLR_RSRV:
+ /* XXX clear entry */
+ return;
+ default:
+ /* no idea what to do */
+ return;
+ }
+
+ if (((env->spr[SPR_BOOKE_MAS0] & MAS0_ATSEL) == MAS0_ATSEL_LRAT) &&
+ !msr_gs) {
+ /* XXX we don't support direct LRAT setting yet */
+ fprintf(stderr, "cpu: don't support LRAT setting yet\n");
+ return;
+ }
+
+ tlbn = (env->spr[SPR_BOOKE_MAS0] & MAS0_TLBSEL_MASK) >> MAS0_TLBSEL_SHIFT;
+ tlbncfg = env->spr[SPR_BOOKE_TLB0CFG + tlbn];
+
+ tlb = booke206_cur_tlb(env);
+
+ if (!tlb) {
+ helper_raise_exception_err(env, POWERPC_EXCP_PROGRAM,
+ POWERPC_EXCP_INVAL |
+ POWERPC_EXCP_INVAL_INVAL);
+ }
+
+ /* check that we support the targeted size */
+ size_tlb = (env->spr[SPR_BOOKE_MAS1] & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT;
+ size_ps = booke206_tlbnps(env, tlbn);
+ if ((env->spr[SPR_BOOKE_MAS1] & MAS1_VALID) && (tlbncfg & TLBnCFG_AVAIL) &&
+ !(size_ps & (1 << size_tlb))) {
+ helper_raise_exception_err(env, POWERPC_EXCP_PROGRAM,
+ POWERPC_EXCP_INVAL |
+ POWERPC_EXCP_INVAL_INVAL);
+ }
+
+ if (msr_gs) {
+ cpu_abort(CPU(cpu), "missing HV implementation\n");
+ }
+ tlb->mas7_3 = ((uint64_t)env->spr[SPR_BOOKE_MAS7] << 32) |
+ env->spr[SPR_BOOKE_MAS3];
+ tlb->mas1 = env->spr[SPR_BOOKE_MAS1];
+
+ /* MAV 1.0 only */
+ if (!(tlbncfg & TLBnCFG_AVAIL)) {
+ /* force !AVAIL TLB entries to correct page size */
+ tlb->mas1 &= ~MAS1_TSIZE_MASK;
+ /* XXX can be configured in MMUCSR0 */
+ tlb->mas1 |= (tlbncfg & TLBnCFG_MINSIZE) >> 12;
+ }
+
+ /* Make a mask from TLB size to discard invalid bits in EPN field */
+ mask = ~(booke206_tlb_to_page_size(env, tlb) - 1);
+ /* Add a mask for page attributes */
+ mask |= MAS2_ACM | MAS2_VLE | MAS2_W | MAS2_I | MAS2_M | MAS2_G | MAS2_E;
+
+ if (!msr_cm) {
+ /* Executing a tlbwe instruction in 32-bit mode will set
+ * bits 0:31 of the TLB EPN field to zero.
+ */
+ mask &= 0xffffffff;
+ }
+
+ tlb->mas2 = env->spr[SPR_BOOKE_MAS2] & mask;
+
+ if (!(tlbncfg & TLBnCFG_IPROT)) {
+ /* no IPROT supported by TLB */
+ tlb->mas1 &= ~MAS1_IPROT;
+ }
+
+ if (booke206_tlb_to_page_size(env, tlb) == TARGET_PAGE_SIZE) {
+ tlb_flush_page(CPU(cpu), tlb->mas2 & MAS2_EPN_MASK);
+ } else {
+ tlb_flush(CPU(cpu), 1);
+ }
+}
+
+static inline void booke206_tlb_to_mas(CPUPPCState *env, ppcmas_tlb_t *tlb)
+{
+ int tlbn = booke206_tlbm_to_tlbn(env, tlb);
+ int way = booke206_tlbm_to_way(env, tlb);
+
+ env->spr[SPR_BOOKE_MAS0] = tlbn << MAS0_TLBSEL_SHIFT;
+ env->spr[SPR_BOOKE_MAS0] |= way << MAS0_ESEL_SHIFT;
+ env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_NV_SHIFT;
+
+ env->spr[SPR_BOOKE_MAS1] = tlb->mas1;
+ env->spr[SPR_BOOKE_MAS2] = tlb->mas2;
+ env->spr[SPR_BOOKE_MAS3] = tlb->mas7_3;
+ env->spr[SPR_BOOKE_MAS7] = tlb->mas7_3 >> 32;
+}
+
+void helper_booke206_tlbre(CPUPPCState *env)
+{
+ ppcmas_tlb_t *tlb = NULL;
+
+ tlb = booke206_cur_tlb(env);
+ if (!tlb) {
+ env->spr[SPR_BOOKE_MAS1] = 0;
+ } else {
+ booke206_tlb_to_mas(env, tlb);
+ }
+}
+
+void helper_booke206_tlbsx(CPUPPCState *env, target_ulong address)
+{
+ ppcmas_tlb_t *tlb = NULL;
+ int i, j;
+ hwaddr raddr;
+ uint32_t spid, sas;
+
+ spid = (env->spr[SPR_BOOKE_MAS6] & MAS6_SPID_MASK) >> MAS6_SPID_SHIFT;
+ sas = env->spr[SPR_BOOKE_MAS6] & MAS6_SAS;
+
+ 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;
+ }
+
+ if (ppcmas_tlb_check(env, tlb, &raddr, address, spid)) {
+ continue;
+ }
+
+ if (sas != ((tlb->mas1 & MAS1_TS) >> MAS1_TS_SHIFT)) {
+ continue;
+ }
+
+ booke206_tlb_to_mas(env, tlb);
+ return;
+ }
+ }
+
+ /* no entry found, fill with defaults */
+ 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_MAS7] = 0;
+
+ if (env->spr[SPR_BOOKE_MAS6] & MAS6_SAS) {
+ env->spr[SPR_BOOKE_MAS1] |= MAS1_TS;
+ }
+
+ env->spr[SPR_BOOKE_MAS1] |= (env->spr[SPR_BOOKE_MAS6] >> 16)
+ << MAS1_TID_SHIFT;
+
+ /* next victim logic */
+ env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_ESEL_SHIFT;
+ env->last_way++;
+ env->last_way &= booke206_tlb_ways(env, 0) - 1;
+ env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_NV_SHIFT;
+}
+
+static inline void booke206_invalidate_ea_tlb(CPUPPCState *env, int tlbn,
+ uint32_t ea)
+{
+ int i;
+ int ways = booke206_tlb_ways(env, tlbn);
+ target_ulong mask;
+
+ for (i = 0; i < ways; i++) {
+ ppcmas_tlb_t *tlb = booke206_get_tlbm(env, tlbn, ea, i);
+ if (!tlb) {
+ continue;
+ }
+ mask = ~(booke206_tlb_to_page_size(env, tlb) - 1);
+ if (((tlb->mas2 & MAS2_EPN_MASK) == (ea & mask)) &&
+ !(tlb->mas1 & MAS1_IPROT)) {
+ tlb->mas1 &= ~MAS1_VALID;
+ }
+ }
+}
+
+void helper_booke206_tlbivax(CPUPPCState *env, target_ulong address)
+{
+ PowerPCCPU *cpu = ppc_env_get_cpu(env);
+
+ if (address & 0x4) {
+ /* flush all entries */
+ if (address & 0x8) {
+ /* flush all of TLB1 */
+ booke206_flush_tlb(env, BOOKE206_FLUSH_TLB1, 1);
+ } else {
+ /* flush all of TLB0 */
+ booke206_flush_tlb(env, BOOKE206_FLUSH_TLB0, 0);
+ }
+ return;
+ }
+
+ if (address & 0x8) {
+ /* flush TLB1 entries */
+ booke206_invalidate_ea_tlb(env, 1, address);
+ tlb_flush(CPU(cpu), 1);
+ } else {
+ /* flush TLB0 entries */
+ booke206_invalidate_ea_tlb(env, 0, address);
+ tlb_flush_page(CPU(cpu), address & MAS2_EPN_MASK);
+ }
+}
+
+void helper_booke206_tlbilx0(CPUPPCState *env, target_ulong address)
+{
+ /* XXX missing LPID handling */
+ booke206_flush_tlb(env, -1, 1);
+}
+
+void helper_booke206_tlbilx1(CPUPPCState *env, target_ulong address)
+{
+ PowerPCCPU *cpu = ppc_env_get_cpu(env);
+ int i, j;
+ int tid = (env->spr[SPR_BOOKE_MAS6] & MAS6_SPID);
+ ppcmas_tlb_t *tlb = env->tlb.tlbm;
+ int tlb_size;
+
+ /* XXX missing LPID handling */
+ for (i = 0; i < BOOKE206_MAX_TLBN; i++) {
+ tlb_size = booke206_tlb_size(env, i);
+ for (j = 0; j < tlb_size; j++) {
+ if (!(tlb[j].mas1 & MAS1_IPROT) &&
+ ((tlb[j].mas1 & MAS1_TID_MASK) == tid)) {
+ tlb[j].mas1 &= ~MAS1_VALID;
+ }
+ }
+ tlb += booke206_tlb_size(env, i);
+ }
+ tlb_flush(CPU(cpu), 1);
+}
+
+void helper_booke206_tlbilx3(CPUPPCState *env, target_ulong address)
+{
+ PowerPCCPU *cpu = ppc_env_get_cpu(env);
+ int i, j;
+ ppcmas_tlb_t *tlb;
+ int tid = (env->spr[SPR_BOOKE_MAS6] & MAS6_SPID);
+ int pid = tid >> MAS6_SPID_SHIFT;
+ int sgs = env->spr[SPR_BOOKE_MAS5] & MAS5_SGS;
+ int ind = (env->spr[SPR_BOOKE_MAS6] & MAS6_SIND) ? MAS1_IND : 0;
+ /* XXX check for unsupported isize and raise an invalid opcode then */
+ int size = env->spr[SPR_BOOKE_MAS6] & MAS6_ISIZE_MASK;
+ /* XXX implement MAV2 handling */
+ bool mav2 = false;
+
+ /* XXX missing LPID handling */
+ /* flush by pid and ea */
+ 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;
+ }
+ if ((ppcmas_tlb_check(env, tlb, NULL, address, pid) != 0) ||
+ (tlb->mas1 & MAS1_IPROT) ||
+ ((tlb->mas1 & MAS1_IND) != ind) ||
+ ((tlb->mas8 & MAS8_TGS) != sgs)) {
+ continue;
+ }
+ if (mav2 && ((tlb->mas1 & MAS1_TSIZE_MASK) != size)) {
+ /* XXX only check when MMUCFG[TWC] || TLBnCFG[HES] */
+ continue;
+ }
+ /* XXX e500mc doesn't match SAS, but other cores might */
+ tlb->mas1 &= ~MAS1_VALID;
+ }
+ }
+ tlb_flush(CPU(cpu), 1);
+}
+
+void helper_booke206_tlbflush(CPUPPCState *env, target_ulong type)
+{
+ int flags = 0;
+
+ if (type & 2) {
+ flags |= BOOKE206_FLUSH_TLB1;
+ }
+
+ if (type & 4) {
+ flags |= BOOKE206_FLUSH_TLB0;
+ }
+
+ booke206_flush_tlb(env, flags, 1);
+}
+
+
+/*****************************************************************************/
+
+/* try to fill the TLB and return an exception if error. If retaddr is
+ NULL, it means that the function was called in C code (i.e. not
+ from generated code or from helper.c) */
+/* XXX: fix it to restore all registers */
+void tlb_fill(CPUState *cs, target_ulong addr, int is_write, int mmu_idx,
+ uintptr_t retaddr)
+{
+ PowerPCCPU *cpu = POWERPC_CPU(cs);
+ PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cs);
+ CPUPPCState *env = &cpu->env;
+ int ret;
+
+ if (pcc->handle_mmu_fault) {
+ ret = pcc->handle_mmu_fault(cpu, addr, is_write, mmu_idx);
+ } else {
+ ret = cpu_ppc_handle_mmu_fault(env, addr, is_write, mmu_idx);
+ }
+ if (unlikely(ret != 0)) {
+ if (likely(retaddr)) {
+ /* now we have a real cpu fault */
+ cpu_restore_state(cs, retaddr);
+ }
+ helper_raise_exception_err(env, cs->exception_index, env->error_code);
+ }
+}
Code Review / kvmfornfv.git / blobdiff