Moved functions in mmu_helper.c that should be compiled in build to
mmu_common.c, moved declaration of functions that both files use to
cpu.h and moved struct declarations and inline functions needed by
both to target/ppc/internal.h. Updated meson.build to compile the
new file. ppc6xx_tlb_getnum is not an inline function anymore.
Signed-off-by: Lucas Mateus Castro (alqotel) <lucas.ara...@eldorado.org.br>
---
target/ppc/cpu.h | 21 +
target/ppc/internal.h | 26 +
target/ppc/meson.build | 6 +-
target/ppc/mmu_common.c | 1623 ++++++++++++++++++++++++++++++++++
target/ppc/mmu_helper.c | 1814 +++------------------------------------
5 files changed, 1777 insertions(+), 1713 deletions(-)
create mode 100644 target/ppc/mmu_common.c
diff --git a/target/ppc/cpu.h b/target/ppc/cpu.h
index b4de0db7ff..0804acc6f2 100644
--- a/target/ppc/cpu.h
+++ b/target/ppc/cpu.h
@@ -1330,6 +1330,27 @@ void store_booke_tsr(CPUPPCState *env, target_ulong val);
void ppc_tlb_invalidate_all(CPUPPCState *env);
void ppc_tlb_invalidate_one(CPUPPCState *env, target_ulong addr);
void cpu_ppc_set_vhyp(PowerPCCPU *cpu, PPCVirtualHypervisor *vhyp);
+
+typedef struct mmu_ctx_t mmu_ctx_t;
+int ppcemb_tlb_check(CPUPPCState *env, ppcemb_tlb_t *tlb,
+ hwaddr *raddrp,
+ target_ulong address, uint32_t pid, int ext,
+ int i);
+int get_physical_address_wtlb(CPUPPCState *env, mmu_ctx_t *ctx,
+ target_ulong eaddr,
+ MMUAccessType access_type, int type,
+ int mmu_idx);
+hwaddr booke206_tlb_to_page_size(CPUPPCState *env,
+ ppcmas_tlb_t *tlb);
+int ppcmas_tlb_check(CPUPPCState *env, ppcmas_tlb_t *tlb,
+ hwaddr *raddrp, target_ulong address,
+ uint32_t pid);
+int get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
+ target_ulong eaddr, MMUAccessType access_type,
+ int type);
+int ppc6xx_tlb_getnum(CPUPPCState *env, target_ulong eaddr,
+ int way, int is_code);
+
#endif
#endif
diff --git a/target/ppc/internal.h b/target/ppc/internal.h
index f1fd3c8d04..ec21a1fbfd 100644
--- a/target/ppc/internal.h
+++ b/target/ppc/internal.h
@@ -245,4 +245,30 @@ static inline int prot_for_access_type(MMUAccessType
access_type)
g_assert_not_reached();
}
+/* Context used internally during MMU translations */
+
+struct mmu_ctx_t {
+ hwaddr raddr; /* Real address */
+ hwaddr eaddr; /* Effective address */
+ int prot; /* Protection bits */
+ hwaddr hash[2]; /* Pagetable hash values */
+ target_ulong ptem; /* Virtual segment ID | API */
+ int key; /* Access key */
+ int nx; /* Non-execute area */
+};
+
+/* Common routines used by software and hardware TLBs emulation */
+static inline int pte_is_valid(target_ulong pte0)
+{
+ return pte0 & 0x80000000 ? 1 : 0;
+}
+
+static inline void pte_invalidate(target_ulong *pte0)
+{
+ *pte0 &= ~0x80000000;
+}
+
+#define PTE_PTEM_MASK 0x7FFFFFBF
+#define PTE_CHECK_MASK (TARGET_PAGE_MASK | 0x7B)
+
#endif /* PPC_INTERNAL_H */
diff --git a/target/ppc/meson.build b/target/ppc/meson.build
index a4f18ff414..03933b666f 100644
--- a/target/ppc/meson.build
+++ b/target/ppc/meson.build
@@ -37,10 +37,12 @@ ppc_softmmu_ss.add(files(
'arch_dump.c',
'machine.c',
'mmu-hash32.c',
- 'mmu_helper.c',
+ 'mmu_common.c',
'monitor.c',
))
-ppc_softmmu_ss.add(when: 'CONFIG_TCG', if_false: files(
+ppc_softmmu_ss.add(when: 'CONFIG_TCG', if_true: files(
+ 'mmu_helper.c',
+), if_false: files(
'tcg-stub.c'
))
diff --git a/target/ppc/mmu_common.c b/target/ppc/mmu_common.c
new file mode 100644
index 0000000000..93e7b8f955
--- /dev/null
+++ b/target/ppc/mmu_common.c
@@ -0,0 +1,1623 @@
+/*
+ * PowerPC CPU initialization for qemu.
+ *
+ * Copyright (C) 2021 Instituto de Pesquisas Eldorado (eldorado.org.br)
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/units.h"
+#include "cpu.h"
+#include "sysemu/kvm.h"
+#include "kvm_ppc.h"
+#include "mmu-hash64.h"
+#include "mmu-hash32.h"
+#include "exec/exec-all.h"
+#include "exec/log.h"
+#include "helper_regs.h"
+#include "qemu/error-report.h"
+#include "qemu/main-loop.h"
+#include "qemu/qemu-print.h"
+#include "internal.h"
+#include "mmu-book3s-v3.h"
+#include "mmu-radix64.h"
+
+/* #define DEBUG_MMU */
+/* #define DEBUG_BATS */
+/* #define DEBUG_SOFTWARE_TLB */
+/* #define DUMP_PAGE_TABLES */
+/* #define FLUSH_ALL_TLBS */
+
+#ifdef DEBUG_MMU
+# define LOG_MMU_STATE(cpu) log_cpu_state_mask(CPU_LOG_MMU, (cpu), 0)
+#else
+# define LOG_MMU_STATE(cpu) do { } while (0)
+#endif
+
+#ifdef DEBUG_SOFTWARE_TLB
+# define LOG_SWTLB(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__)
+#else
+# define LOG_SWTLB(...) do { } while (0)
+#endif
+
+#ifdef DEBUG_BATS
+# define LOG_BATS(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__)
+#else
+# define LOG_BATS(...) do { } while (0)
+#endif
+
+/*****************************************************************************/
+/* PowerPC MMU emulation */
+
+static int pp_check(int key, int pp, int nx)
+{
+ int access;
+
+ /* Compute access rights */
+ access = 0;
+ if (key == 0) {
+ switch (pp) {
+ case 0x0:
+ case 0x1:
+ case 0x2:
+ access |= PAGE_WRITE;
+ /* fall through */
+ case 0x3:
+ access |= PAGE_READ;
+ break;
+ }
+ } else {
+ switch (pp) {
+ case 0x0:
+ access = 0;
+ break;
+ case 0x1:
+ case 0x3:
+ access = PAGE_READ;
+ break;
+ case 0x2:
+ access = PAGE_READ | PAGE_WRITE;
+ break;
+ }
+ }
+ if (nx == 0) {
+ access |= PAGE_EXEC;
+ }
+
+ return access;
+}
+
+static int check_prot(int prot, MMUAccessType access_type)
+{
+ return prot & prot_for_access_type(access_type) ? 0 : -2;
+}
+
+static int pte_update_flags(mmu_ctx_t *ctx, target_ulong *pte1p,
+ int ret, MMUAccessType access_type)
+{
+ int store = 0;
+
+ /* Update page flags */
+ if (!(*pte1p & 0x00000100)) {
+ /* Update accessed flag */
+ *pte1p |= 0x00000100;
+ store = 1;
+ }
+ if (!(*pte1p & 0x00000080)) {
+ if (access_type == MMU_DATA_STORE && ret == 0) {
+ /* Update changed flag */
+ *pte1p |= 0x00000080;
+ store = 1;
+ } else {
+ /* Force page fault for first write access */
+ ctx->prot &= ~PAGE_WRITE;
+ }
+ }
+
+ return store;
+}
+
+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 int ppc6xx_tlb_pte_check(mmu_ctx_t *ctx, target_ulong pte0,
+ target_ulong pte1, int h,
+ MMUAccessType access_type)
+{
+ target_ulong ptem, mmask;
+ int access, ret, pteh, ptev, pp;
+
+ ret = -1;
+ /* Check validity and table match */
+ ptev = pte_is_valid(pte0);
+ pteh = (pte0 >> 6) & 1;
+ if (ptev && h == pteh) {
+ /* Check vsid & api */
+ ptem = pte0 & PTE_PTEM_MASK;
+ mmask = PTE_CHECK_MASK;
+ pp = pte1 & 0x00000003;
+ if (ptem == ctx->ptem) {
+ if (ctx->raddr != (hwaddr)-1ULL) {
+ /* all matches should have equal RPN, WIMG & PP */
+ if ((ctx->raddr & mmask) != (pte1 & mmask)) {
+ qemu_log_mask(CPU_LOG_MMU, "Bad RPN/WIMG/PP\n");
+ return -3;
+ }
+ }
+ /* Compute access rights */
+ access = pp_check(ctx->key, pp, ctx->nx);
+ /* Keep the matching PTE information */
+ ctx->raddr = pte1;
+ ctx->prot = access;
+ ret = check_prot(ctx->prot, access_type);
+ if (ret == 0) {
+ /* Access granted */
+ qemu_log_mask(CPU_LOG_MMU, "PTE access granted !\n");
+ } else {
+ /* Access right violation */
+ qemu_log_mask(CPU_LOG_MMU, "PTE access rejected\n");
+ }
+ }
+ }
+
+ return ret;
+}
+
+static int ppc6xx_tlb_check(CPUPPCState *env, mmu_ctx_t *ctx,
+ target_ulong eaddr, MMUAccessType access_type)
+{
+ ppc6xx_tlb_t *tlb;
+ int nr, best, way;
+ int ret;
+
+ best = -1;
+ ret = -1; /* No TLB found */
+ for (way = 0; way < env->nb_ways; way++) {
+ nr = ppc6xx_tlb_getnum(env, eaddr, way, access_type == MMU_INST_FETCH);
+ tlb = &env->tlb.tlb6[nr];
+ /* This test "emulates" the PTE index match for hardware TLBs */
+ if ((eaddr & TARGET_PAGE_MASK) != tlb->EPN) {
+ LOG_SWTLB("TLB %d/%d %s [" TARGET_FMT_lx " " TARGET_FMT_lx
+ "] <> " TARGET_FMT_lx "\n", nr, env->nb_tlb,
+ pte_is_valid(tlb->pte0) ? "valid" : "inval",
+ tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE, eaddr);
+ continue;
+ }
+ LOG_SWTLB("TLB %d/%d %s " TARGET_FMT_lx " <> " TARGET_FMT_lx " "
+ TARGET_FMT_lx " %c %c\n", nr, env->nb_tlb,
+ pte_is_valid(tlb->pte0) ? "valid" : "inval",
+ tlb->EPN, eaddr, tlb->pte1,
+ access_type == MMU_DATA_STORE ? 'S' : 'L',
+ access_type == MMU_INST_FETCH ? 'I' : 'D');
+ switch (ppc6xx_tlb_pte_check(ctx, tlb->pte0, tlb->pte1,
+ 0, access_type)) {
+ case -3:
+ /* TLB inconsistency */
+ return -1;
+ case -2:
+ /* Access violation */
+ ret = -2;
+ best = nr;
+ break;
+ case -1:
+ default:
+ /* No match */
+ break;
+ case 0:
+ /* access granted */
+ /*
+ * XXX: we should go on looping to check all TLBs
+ * consistency but we can speed-up the whole thing as
+ * the result would be undefined if TLBs are not
+ * consistent.
+ */
+ ret = 0;
+ best = nr;
+ goto done;
+ }
+ }
+ if (best != -1) {
+ done:
+ LOG_SWTLB("found TLB at addr " TARGET_FMT_plx " prot=%01x ret=%d\n",
+ ctx->raddr & TARGET_PAGE_MASK, ctx->prot, ret);
+ /* Update page flags */
+ pte_update_flags(ctx, &env->tlb.tlb6[best].pte1, ret, access_type);
+ }
+
+ return ret;
+}
+
+/* Perform BAT hit & translation */
+static inline void bat_size_prot(CPUPPCState *env, target_ulong *blp,
+ int *validp, int *protp, target_ulong *BATu,
+ target_ulong *BATl)
+{
+ target_ulong bl;
+ int pp, valid, prot;
+
+ bl = (*BATu & 0x00001FFC) << 15;
+ valid = 0;
+ prot = 0;
+ if (((msr_pr == 0) && (*BATu & 0x00000002)) ||
+ ((msr_pr != 0) && (*BATu & 0x00000001))) {
+ valid = 1;
+ pp = *BATl & 0x00000003;
+ if (pp != 0) {
+ prot = PAGE_READ | PAGE_EXEC;
+ if (pp == 0x2) {
+ prot |= PAGE_WRITE;
+ }
+ }
+ }
+ *blp = bl;
+ *validp = valid;
+ *protp = prot;
+}
+
+static int get_bat_6xx_tlb(CPUPPCState *env, mmu_ctx_t *ctx,
+ target_ulong virtual, MMUAccessType access_type)
+{
+ target_ulong *BATlt, *BATut, *BATu, *BATl;
+ target_ulong BEPIl, BEPIu, bl;
+ int i, valid, prot;
+ int ret = -1;
+ bool ifetch = access_type == MMU_INST_FETCH;
+
+ LOG_BATS("%s: %cBAT v " TARGET_FMT_lx "\n", __func__,
+ ifetch ? 'I' : 'D', virtual);
+ if (ifetch) {
+ BATlt = env->IBAT[1];
+ BATut = env->IBAT[0];
+ } else {
+ BATlt = env->DBAT[1];
+ BATut = env->DBAT[0];
+ }
+ for (i = 0; i < env->nb_BATs; i++) {
+ BATu = &BATut[i];
+ BATl = &BATlt[i];
+ BEPIu = *BATu & 0xF0000000;
+ BEPIl = *BATu & 0x0FFE0000;
+ bat_size_prot(env, &bl, &valid, &prot, BATu, BATl);
+ LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx
+ " BATl " TARGET_FMT_lx "\n", __func__,
+ ifetch ? 'I' : 'D', i, virtual, *BATu, *BATl);
+ if ((virtual & 0xF0000000) == BEPIu &&
+ ((virtual & 0x0FFE0000) & ~bl) == BEPIl) {
+ /* BAT matches */
+ if (valid != 0) {
+ /* Get physical address */
+ ctx->raddr = (*BATl & 0xF0000000) |
+ ((virtual & 0x0FFE0000 & bl) | (*BATl & 0x0FFE0000)) |
+ (virtual & 0x0001F000);
+ /* Compute access rights */
+ ctx->prot = prot;
+ ret = check_prot(ctx->prot, access_type);
+ if (ret == 0) {
+ LOG_BATS("BAT %d match: r " TARGET_FMT_plx " prot=%c%c\n",
+ i, ctx->raddr, ctx->prot & PAGE_READ ? 'R' : '-',
+ ctx->prot & PAGE_WRITE ? 'W' : '-');
+ }
+ break;
+ }
+ }
+ }
+ if (ret < 0) {
+#if defined(DEBUG_BATS)
+ if (qemu_log_enabled()) {
+ LOG_BATS("no BAT match for " TARGET_FMT_lx ":\n", virtual);
+ for (i = 0; i < 4; i++) {
+ BATu = &BATut[i];
+ BATl = &BATlt[i];
+ BEPIu = *BATu & 0xF0000000;
+ BEPIl = *BATu & 0x0FFE0000;
+ bl = (*BATu & 0x00001FFC) << 15;
+ LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx
+ " BATl " TARGET_FMT_lx "\n\t" TARGET_FMT_lx " "
+ TARGET_FMT_lx " " TARGET_FMT_lx "\n",
+ __func__, ifetch ? 'I' : 'D', i, virtual,
+ *BATu, *BATl, BEPIu, BEPIl, bl);
+ }
+ }
+#endif
+ }
+ /* No hit */
+ return ret;
+}
+
+/* Perform segment based translation */
+static int get_segment_6xx_tlb(CPUPPCState *env, mmu_ctx_t *ctx,
+ target_ulong eaddr, MMUAccessType access_type,
+ int type)
+{
+ PowerPCCPU *cpu = env_archcpu(env);
+ hwaddr hash;
+ target_ulong vsid;
+ int ds, pr, target_page_bits;
+ int ret;
+ target_ulong sr, pgidx;
+
+ pr = msr_pr;
+ ctx->eaddr = eaddr;
+
+ sr = env->sr[eaddr >> 28];
+ ctx->key = (((sr & 0x20000000) && (pr != 0)) ||
+ ((sr & 0x40000000) && (pr == 0))) ? 1 : 0;
+ ds = sr & 0x80000000 ? 1 : 0;
+ ctx->nx = sr & 0x10000000 ? 1 : 0;
+ vsid = sr & 0x00FFFFFF;
+ target_page_bits = TARGET_PAGE_BITS;
+ qemu_log_mask(CPU_LOG_MMU,
+ "Check segment v=" TARGET_FMT_lx " %d " TARGET_FMT_lx
+ " nip=" TARGET_FMT_lx " lr=" TARGET_FMT_lx
+ " ir=%d dr=%d pr=%d %d t=%d\n",
+ eaddr, (int)(eaddr >> 28), sr, env->nip, env->lr, (int)msr_ir,
+ (int)msr_dr, pr != 0 ? 1 : 0, access_type == MMU_DATA_STORE, type);
+ pgidx = (eaddr & ~SEGMENT_MASK_256M) >> target_page_bits;
+ hash = vsid ^ pgidx;
+ ctx->ptem = (vsid << 7) | (pgidx >> 10);
+
+ qemu_log_mask(CPU_LOG_MMU,
+ "pte segment: key=%d ds %d nx %d vsid " TARGET_FMT_lx "\n",
+ ctx->key, ds, ctx->nx, vsid);
+ ret = -1;
+ if (!ds) {
+ /* Check if instruction fetch is allowed, if needed */
+ if (type != ACCESS_CODE || ctx->nx == 0) {
+ /* Page address translation */
+ qemu_log_mask(CPU_LOG_MMU, "htab_base " TARGET_FMT_plx
+ " htab_mask " TARGET_FMT_plx
+ " hash " TARGET_FMT_plx "\n",
+ ppc_hash32_hpt_base(cpu), ppc_hash32_hpt_mask(cpu), hash);
+ ctx->hash[0] = hash;
+ ctx->hash[1] = ~hash;
+
+ /* Initialize real address with an invalid value */
+ ctx->raddr = (hwaddr)-1ULL;
+ /* Software TLB search */
+ ret = ppc6xx_tlb_check(env, ctx, eaddr, access_type);
+#if defined(DUMP_PAGE_TABLES)
+ if (qemu_loglevel_mask(CPU_LOG_MMU)) {
+ CPUState *cs = env_cpu(env);
+ hwaddr curaddr;
+ uint32_t a0, a1, a2, a3;
+
+ qemu_log("Page table: " TARGET_FMT_plx " len " TARGET_FMT_plx
+ "\n", ppc_hash32_hpt_base(cpu),
+ ppc_hash32_hpt_mask(env) + 0x80);
+ for (curaddr = ppc_hash32_hpt_base(cpu);
+ curaddr < (ppc_hash32_hpt_base(cpu)
+ + ppc_hash32_hpt_mask(cpu) + 0x80);
+ curaddr += 16) {
+ a0 = ldl_phys(cs->as, curaddr);
+ a1 = ldl_phys(cs->as, curaddr + 4);
+ a2 = ldl_phys(cs->as, curaddr + 8);
+ a3 = ldl_phys(cs->as, curaddr + 12);
+ if (a0 != 0 || a1 != 0 || a2 != 0 || a3 != 0) {
+ qemu_log(TARGET_FMT_plx ": %08x %08x %08x %08x\n",
+ curaddr, a0, a1, a2, a3);
+ }
+ }
+ }
+#endif
+ } else {
+ qemu_log_mask(CPU_LOG_MMU, "No access allowed\n");
+ ret = -3;
+ }
+ } else {
+ target_ulong sr;
+
+ qemu_log_mask(CPU_LOG_MMU, "direct store...\n");
+ /* Direct-store segment : absolutely *BUGGY* for now */
+
+ /*
+ * Direct-store implies a 32-bit MMU.
+ * Check the Segment Register's bus unit ID (BUID).
+ */
+ sr = env->sr[eaddr >> 28];
+ if ((sr & 0x1FF00000) >> 20 == 0x07f) {
+ /*
+ * Memory-forced I/O controller interface access
+ *
+ * If T=1 and BUID=x'07F', the 601 performs a memory
+ * access to SR[28-31] LA[4-31], bypassing all protection
+ * mechanisms.
+ */
+ ctx->raddr = ((sr & 0xF) << 28) | (eaddr & 0x0FFFFFFF);
+ ctx->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
+ return 0;
+ }
+
+ switch (type) {
+ case ACCESS_INT:
+ /* Integer load/store : only access allowed */
+ break;
+ case ACCESS_CODE:
+ /* No code fetch is allowed in direct-store areas */
+ return -4;
+ case ACCESS_FLOAT:
+ /* Floating point load/store */
+ return -4;
+ case ACCESS_RES:
+ /* lwarx, ldarx or srwcx. */
+ return -4;
+ case ACCESS_CACHE:
+ /*
+ * dcba, dcbt, dcbtst, dcbf, dcbi, dcbst, dcbz, or icbi
+ *
+ * Should make the instruction do no-op. As it already do
+ * no-op, it's quite easy :-)
+ */
+ ctx->raddr = eaddr;
+ return 0;
+ case ACCESS_EXT:
+ /* eciwx or ecowx */
+ return -4;
+ default:
+ qemu_log_mask(CPU_LOG_MMU, "ERROR: instruction should not need "
+ "address translation\n");
+ return -4;
+ }
+ if ((access_type == MMU_DATA_STORE || ctx->key != 1) &&
+ (access_type == MMU_DATA_LOAD || ctx->key != 0)) {
+ ctx->raddr = eaddr;
+ ret = 2;
+ } else {
+ ret = -2;
+ }
+ }
+
+ return ret;
+}
+
+/* Generic TLB check function for embedded PowerPC implementations */
+int ppcemb_tlb_check(CPUPPCState *env, ppcemb_tlb_t *tlb,
+ hwaddr *raddrp,
+ target_ulong address, uint32_t pid, int ext,
+ int i)
+{
+ target_ulong mask;
+
+ /* Check valid flag */
+ if (!(tlb->prot & PAGE_VALID)) {
+ return -1;
+ }
+ mask = ~(tlb->size - 1);
+ LOG_SWTLB("%s: TLB %d address " TARGET_FMT_lx " PID %u <=> " TARGET_FMT_lx
+ " " TARGET_FMT_lx " %u %x\n", __func__, i, address, pid,
tlb->EPN,
+ mask, (uint32_t)tlb->PID, tlb->prot);
+ /* Check PID */
+ if (tlb->PID != 0 && tlb->PID != pid) {
+ return -1;
+ }
+ /* Check effective address */
+ if ((address & mask) != tlb->EPN) {
+ return -1;
+ }
+ *raddrp = (tlb->RPN & mask) | (address & ~mask);
+ if (ext) {
+ /* Extend the physical address to 36 bits */
+ *raddrp |= (uint64_t)(tlb->RPN & 0xF) << 32;
+ }
+
+ return 0;
+}
+
+static int mmu40x_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
+ target_ulong address,
+ MMUAccessType access_type)
+{
+ ppcemb_tlb_t *tlb;
+ hwaddr raddr;
+ int i, ret, zsel, zpr, pr;
+
+ ret = -1;
+ raddr = (hwaddr)-1ULL;
+ pr = msr_pr;
+ for (i = 0; i < env->nb_tlb; i++) {
+ tlb = &env->tlb.tlbe[i];
+ if (ppcemb_tlb_check(env, tlb, &raddr, address,
+ env->spr[SPR_40x_PID], 0, i) < 0) {
+ continue;
+ }
+ zsel = (tlb->attr >> 4) & 0xF;
+ zpr = (env->spr[SPR_40x_ZPR] >> (30 - (2 * zsel))) & 0x3;
+ LOG_SWTLB("%s: TLB %d zsel %d zpr %d ty %d attr %08x\n",
+ __func__, i, zsel, zpr, access_type, tlb->attr);
+ /* Check execute enable bit */
+ switch (zpr) {
+ case 0x2:
+ if (pr != 0) {
+ goto check_perms;
+ }
+ /* fall through */
+ case 0x3:
+ /* All accesses granted */
+ ctx->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
+ ret = 0;
+ break;
+ case 0x0:
+ if (pr != 0) {
+ /* Raise Zone protection fault. */
+ env->spr[SPR_40x_ESR] = 1 << 22;
+ ctx->prot = 0;
+ ret = -2;
+ break;
+ }
+ /* fall through */
+ case 0x1:
+ check_perms:
+ /* Check from TLB entry */
+ ctx->prot = tlb->prot;
+ ret = check_prot(ctx->prot, access_type);
+ if (ret == -2) {
+ env->spr[SPR_40x_ESR] = 0;
+ }
+ break;
+ }
+ if (ret >= 0) {
+ ctx->raddr = raddr;
+ LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx
+ " %d %d\n", __func__, address, ctx->raddr, ctx->prot,
+ ret);
+ return 0;
+ }
+ }
+ LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx
+ " %d %d\n", __func__, address, raddr, ctx->prot, ret);
+
+ return ret;
+}
+
+void store_40x_sler(CPUPPCState *env, uint32_t val)
+{
+ /* XXX: TO BE FIXED */
+ if (val != 0x00000000) {
+ cpu_abort(env_cpu(env),
+ "Little-endian regions are not supported by now\n");
+ }
+ env->spr[SPR_405_SLER] = val;
+}
+
+static int mmubooke_check_tlb(CPUPPCState *env, ppcemb_tlb_t *tlb,
+ hwaddr *raddr, int *prot, target_ulong address,
+ MMUAccessType access_type, int i)
+{
+ int prot2;
+
+ if (ppcemb_tlb_check(env, tlb, raddr, address,
+ env->spr[SPR_BOOKE_PID],
+ !env->nb_pids, i) >= 0) {
+ goto found_tlb;
+ }
+
+ if (env->spr[SPR_BOOKE_PID1] &&
+ ppcemb_tlb_check(env, tlb, raddr, address,
+ env->spr[SPR_BOOKE_PID1], 0, i) >= 0) {
+ goto found_tlb;
+ }
+
+ if (env->spr[SPR_BOOKE_PID2] &&
+ ppcemb_tlb_check(env, tlb, raddr, address,
+ env->spr[SPR_BOOKE_PID2], 0, i) >= 0) {
+ goto found_tlb;
+ }
+
+ LOG_SWTLB("%s: TLB entry not found\n", __func__);
+ return -1;
+
+found_tlb:
+
+ if (msr_pr != 0) {
+ prot2 = tlb->prot & 0xF;
+ } else {
+ prot2 = (tlb->prot >> 4) & 0xF;
+ }
+
+ /* Check the address space */
+ if ((access_type == MMU_INST_FETCH ? msr_ir : msr_dr) != (tlb->attr & 1)) {
+ LOG_SWTLB("%s: AS doesn't match\n", __func__);
+ return -1;
+ }
+
+ *prot = prot2;
+ if (prot2 & prot_for_access_type(access_type)) {
+ LOG_SWTLB("%s: good TLB!\n", __func__);
+ return 0;
+ }
+
+ LOG_SWTLB("%s: no prot match: %x\n", __func__, prot2);
+ return access_type == MMU_INST_FETCH ? -3 : -2;
+}
+
+static int mmubooke_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
+ target_ulong address,
+ MMUAccessType access_type)
+{
+ ppcemb_tlb_t *tlb;
+ hwaddr raddr;
+ int i, ret;
+
+ ret = -1;
+ raddr = (hwaddr)-1ULL;
+ for (i = 0; i < env->nb_tlb; i++) {
+ tlb = &env->tlb.tlbe[i];
+ ret = mmubooke_check_tlb(env, tlb, &raddr, &ctx->prot, address,
+ access_type, i);
+ if (ret != -1) {
+ break;
+ }
+ }
+
+ if (ret >= 0) {
+ ctx->raddr = raddr;
+ LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx
+ " %d %d\n", __func__, address, ctx->raddr, ctx->prot,
+ ret);
+ } else {
+ LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx
+ " %d %d\n", __func__, address, raddr, ctx->prot, ret);
+ }
+
+ return ret;
+}
+
+hwaddr booke206_tlb_to_page_size(CPUPPCState *env,
+ ppcmas_tlb_t *tlb)
+{
+ int tlbm_size;
+
+ tlbm_size = (tlb->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT;
+
+ return 1024ULL << tlbm_size;
+}
+
+/* TLB check function for MAS based SoftTLBs */
+int ppcmas_tlb_check(CPUPPCState *env, ppcmas_tlb_t *tlb,
+ hwaddr *raddrp, target_ulong address,
+ uint32_t pid)
+{
+ hwaddr mask;
+ uint32_t tlb_pid;
+
+ if (!msr_cm) {
+ /* In 32bit mode we can only address 32bit EAs */
+ address = (uint32_t)address;
+ }
+
+ /* Check valid flag */
+ if (!(tlb->mas1 & MAS1_VALID)) {
+ return -1;
+ }
+
+ mask = ~(booke206_tlb_to_page_size(env, tlb) - 1);
+ LOG_SWTLB("%s: TLB ADDR=0x" TARGET_FMT_lx " PID=0x%x MAS1=0x%x MAS2=0x%"
+ PRIx64 " mask=0x%" HWADDR_PRIx " MAS7_3=0x%" PRIx64 " MAS8=0x%"
+ PRIx32 "\n", __func__, address, pid, tlb->mas1, tlb->mas2, mask,
+ tlb->mas7_3, tlb->mas8);
+
+ /* Check PID */
+ tlb_pid = (tlb->mas1 & MAS1_TID_MASK) >> MAS1_TID_SHIFT;
+ if (tlb_pid != 0 && tlb_pid != pid) {
+ return -1;
+ }
+
+ /* Check effective address */
+ if ((address & mask) != (tlb->mas2 & MAS2_EPN_MASK)) {
+ return -1;
+ }
+
+ if (raddrp) {
+ *raddrp = (tlb->mas7_3 & mask) | (address & ~mask);
+ }
+
+ return 0;
+}
+
+static bool is_epid_mmu(int mmu_idx)
+{
+ return mmu_idx == PPC_TLB_EPID_STORE || mmu_idx == PPC_TLB_EPID_LOAD;
+}
+
+static uint32_t mmubooke206_esr(int mmu_idx, MMUAccessType access_type)
+{
+ uint32_t esr = 0;
+ if (access_type == MMU_DATA_STORE) {
+ esr |= ESR_ST;
+ }
+ if (is_epid_mmu(mmu_idx)) {
+ esr |= ESR_EPID;
+ }
+ return esr;
+}
+
+/*
+ * Get EPID register given the mmu_idx. If this is regular load,
+ * construct the EPID access bits from current processor state
+ *
+ * Get the effective AS and PR bits and the PID. The PID is returned
+ * only if EPID load is requested, otherwise the caller must detect
+ * the correct EPID. Return true if valid EPID is returned.
+ */
+static bool mmubooke206_get_as(CPUPPCState *env,
+ int mmu_idx, uint32_t *epid_out,
+ bool *as_out, bool *pr_out)
+{
+ if (is_epid_mmu(mmu_idx)) {
+ uint32_t epidr;
+ if (mmu_idx == PPC_TLB_EPID_STORE) {
+ epidr = env->spr[SPR_BOOKE_EPSC];
+ } else {
+ epidr = env->spr[SPR_BOOKE_EPLC];
+ }
+ *epid_out = (epidr & EPID_EPID) >> EPID_EPID_SHIFT;
+ *as_out = !!(epidr & EPID_EAS);
+ *pr_out = !!(epidr & EPID_EPR);
+ return true;
+ } else {
+ *as_out = msr_ds;
+ *pr_out = msr_pr;
+ return false;
+ }
+}
+
+/* Check if the tlb found by hashing really matches */
+static int mmubooke206_check_tlb(CPUPPCState *env, ppcmas_tlb_t *tlb,
+ hwaddr *raddr, int *prot,
+ target_ulong address,
+ MMUAccessType access_type, int mmu_idx)
+{
+ int prot2 = 0;
+ uint32_t epid;
+ bool as, pr;
+ bool use_epid = mmubooke206_get_as(env, mmu_idx, &epid, &as, &pr);
+
+ if (!use_epid) {
+ if (ppcmas_tlb_check(env, tlb, raddr, address,
+ env->spr[SPR_BOOKE_PID]) >= 0) {
+ goto found_tlb;
+ }
+
+ if (env->spr[SPR_BOOKE_PID1] &&
+ ppcmas_tlb_check(env, tlb, raddr, address,
+ env->spr[SPR_BOOKE_PID1]) >= 0) {
+ goto found_tlb;
+ }
+
+ if (env->spr[SPR_BOOKE_PID2] &&
+ ppcmas_tlb_check(env, tlb, raddr, address,
+ env->spr[SPR_BOOKE_PID2]) >= 0) {
+ goto found_tlb;
+ }
+ } else {
+ if (ppcmas_tlb_check(env, tlb, raddr, address, epid) >= 0) {
+ goto found_tlb;
+ }
+ }
+
+ LOG_SWTLB("%s: TLB entry not found\n", __func__);
+ return -1;
+
+found_tlb:
+
+ if (pr) {
+ if (tlb->mas7_3 & MAS3_UR) {
+ prot2 |= PAGE_READ;
+ }
+ if (tlb->mas7_3 & MAS3_UW) {
+ prot2 |= PAGE_WRITE;
+ }
+ if (tlb->mas7_3 & MAS3_UX) {
+ prot2 |= PAGE_EXEC;
+ }
+ } else {
+ if (tlb->mas7_3 & MAS3_SR) {
+ prot2 |= PAGE_READ;
+ }
+ if (tlb->mas7_3 & MAS3_SW) {
+ prot2 |= PAGE_WRITE;
+ }
+ if (tlb->mas7_3 & MAS3_SX) {
+ prot2 |= PAGE_EXEC;
+ }
+ }
+
+ /* Check the address space and permissions */
+ if (access_type == MMU_INST_FETCH) {
+ /* There is no way to fetch code using epid load */
+ assert(!use_epid);
+ as = msr_ir;
+ }
+
+ if (as != ((tlb->mas1 & MAS1_TS) >> MAS1_TS_SHIFT)) {
+ LOG_SWTLB("%s: AS doesn't match\n", __func__);
+ return -1;
+ }
+
+ *prot = prot2;
+ if (prot2 & prot_for_access_type(access_type)) {
+ LOG_SWTLB("%s: good TLB!\n", __func__);
+ return 0;
+ }
+
+ LOG_SWTLB("%s: no prot match: %x\n", __func__, prot2);
+ return access_type == MMU_INST_FETCH ? -3 : -2;
+}
+
+static int mmubooke206_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
+ target_ulong address,
+ MMUAccessType access_type,
+ int mmu_idx)
+{
+ ppcmas_tlb_t *tlb;
+ hwaddr raddr;
+ int i, j, ret;
+
+ ret = -1;
+ raddr = (hwaddr)-1ULL;
+
+ for (i = 0; i < BOOKE206_MAX_TLBN; i++) {
+ int ways = booke206_tlb_ways(env, i);
+
+ for (j = 0; j < ways; j++) {
+ tlb = booke206_get_tlbm(env, i, address, j);
+ if (!tlb) {
+ continue;
+ }
+ ret = mmubooke206_check_tlb(env, tlb, &raddr, &ctx->prot, address,
+ access_type, mmu_idx);
+ if (ret != -1) {
+ goto found_tlb;
+ }
+ }
+ }
+
+found_tlb:
+
+ if (ret >= 0) {
+ ctx->raddr = raddr;
+ LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx
+ " %d %d\n", __func__, address, ctx->raddr, ctx->prot,
+ ret);
+ } else {
+ LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx
+ " %d %d\n", __func__, address, raddr, ctx->prot, ret);
+ }
+
+ return ret;
+}
+
+static const char *book3e_tsize_to_str[32] = {
+ "1K", "2K", "4K", "8K", "16K", "32K", "64K", "128K", "256K", "512K",
+ "1M", "2M", "4M", "8M", "16M", "32M", "64M", "128M", "256M", "512M",
+ "1G", "2G", "4G", "8G", "16G", "32G", "64G", "128G", "256G", "512G",
+ "1T", "2T"
+};
+
+static void mmubooke_dump_mmu(CPUPPCState *env)
+{
+ ppcemb_tlb_t *entry;
+ int i;
+
+ if (kvm_enabled() && !env->kvm_sw_tlb) {
+ qemu_printf("Cannot access KVM TLB\n");
+ return;
+ }
+
+ qemu_printf("\nTLB:\n");
+ qemu_printf("Effective Physical Size PID Prot "
+ "Attr\n");
+
+ entry = &env->tlb.tlbe[0];
+ for (i = 0; i < env->nb_tlb; i++, entry++) {
+ hwaddr ea, pa;
+ target_ulong mask;
+ uint64_t size = (uint64_t)entry->size;
+ char size_buf[20];
+
+ /* Check valid flag */
+ if (!(entry->prot & PAGE_VALID)) {
+ continue;
+ }
+
+ mask = ~(entry->size - 1);
+ ea = entry->EPN & mask;
+ pa = entry->RPN & mask;
+ /* Extend the physical address to 36 bits */
+ pa |= (hwaddr)(entry->RPN & 0xF) << 32;
+ if (size >= 1 * MiB) {
+ snprintf(size_buf, sizeof(size_buf), "%3" PRId64 "M", size / MiB);
+ } else {
+ snprintf(size_buf, sizeof(size_buf), "%3" PRId64 "k", size / KiB);
+ }
+ qemu_printf("0x%016" PRIx64 " 0x%016" PRIx64 " %s %-5u %08x %08x\n",
+ (uint64_t)ea, (uint64_t)pa, size_buf, (uint32_t)entry->PID,
+ entry->prot, entry->attr);
+ }
+
+}
+
+static void mmubooke206_dump_one_tlb(CPUPPCState *env, int tlbn, int offset,
+ int tlbsize)
+{
+ ppcmas_tlb_t *entry;
+ int i;
+
+ qemu_printf("\nTLB%d:\n", tlbn);
+ qemu_printf("Effective Physical Size TID TS SRWX"
+ " URWX WIMGE U0123\n");
+
+ entry = &env->tlb.tlbm[offset];
+ for (i = 0; i < tlbsize; i++, entry++) {
+ hwaddr ea, pa, size;
+ int tsize;
+
+ if (!(entry->mas1 & MAS1_VALID)) {
+ continue;
+ }
+
+ tsize = (entry->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT;
+ size = 1024ULL << tsize;
+ ea = entry->mas2 & ~(size - 1);
+ pa = entry->mas7_3 & ~(size - 1);
+
+ qemu_printf("0x%016" PRIx64 " 0x%016" PRIx64 " %4s %-5u %1u S%c%c%c"
+ "U%c%c%c %c%c%c%c%c U%c%c%c%c\n",
+ (uint64_t)ea, (uint64_t)pa,
+ book3e_tsize_to_str[tsize],
+ (entry->mas1 & MAS1_TID_MASK) >> MAS1_TID_SHIFT,
+ (entry->mas1 & MAS1_TS) >> MAS1_TS_SHIFT,
+ entry->mas7_3 & MAS3_SR ? 'R' : '-',
+ entry->mas7_3 & MAS3_SW ? 'W' : '-',
+ entry->mas7_3 & MAS3_SX ? 'X' : '-',
+ entry->mas7_3 & MAS3_UR ? 'R' : '-',
+ entry->mas7_3 & MAS3_UW ? 'W' : '-',
+ entry->mas7_3 & MAS3_UX ? 'X' : '-',
+ entry->mas2 & MAS2_W ? 'W' : '-',
+ entry->mas2 & MAS2_I ? 'I' : '-',
+ entry->mas2 & MAS2_M ? 'M' : '-',
+ entry->mas2 & MAS2_G ? 'G' : '-',
+ entry->mas2 & MAS2_E ? 'E' : '-',
+ entry->mas7_3 & MAS3_U0 ? '0' : '-',
+ entry->mas7_3 & MAS3_U1 ? '1' : '-',
+ entry->mas7_3 & MAS3_U2 ? '2' : '-',
+ entry->mas7_3 & MAS3_U3 ? '3' : '-');
+ }
+}
+
+static void mmubooke206_dump_mmu(CPUPPCState *env)
+{
+ int offset = 0;
+ int i;
+
+ if (kvm_enabled() && !env->kvm_sw_tlb) {
+ qemu_printf("Cannot access KVM TLB\n");
+ return;
+ }
+
+ for (i = 0; i < BOOKE206_MAX_TLBN; i++) {
+ int size = booke206_tlb_size(env, i);
+
+ if (size == 0) {
+ continue;
+ }
+
+ mmubooke206_dump_one_tlb(env, i, offset, size);
+ offset += size;
+ }
+}
+
+static void mmu6xx_dump_BATs(CPUPPCState *env, int type)
+{
+ target_ulong *BATlt, *BATut, *BATu, *BATl;
+ target_ulong BEPIl, BEPIu, bl;
+ int i;
+
+ switch (type) {
+ case ACCESS_CODE:
+ BATlt = env->IBAT[1];
+ BATut = env->IBAT[0];
+ break;
+ default:
+ BATlt = env->DBAT[1];
+ BATut = env->DBAT[0];
+ break;
+ }
+
+ for (i = 0; i < env->nb_BATs; i++) {
+ BATu = &BATut[i];
+ BATl = &BATlt[i];
+ BEPIu = *BATu & 0xF0000000;
+ BEPIl = *BATu & 0x0FFE0000;
+ bl = (*BATu & 0x00001FFC) << 15;
+ qemu_printf("%s BAT%d BATu " TARGET_FMT_lx
+ " BATl " TARGET_FMT_lx "\n\t" TARGET_FMT_lx " "
+ TARGET_FMT_lx " " TARGET_FMT_lx "\n",
+ type == ACCESS_CODE ? "code" : "data", i,
+ *BATu, *BATl, BEPIu, BEPIl, bl);
+ }
+}
+
+static void mmu6xx_dump_mmu(CPUPPCState *env)
+{
+ PowerPCCPU *cpu = env_archcpu(env);
+ ppc6xx_tlb_t *tlb;
+ target_ulong sr;
+ int type, way, entry, i;
+
+ qemu_printf("HTAB base = 0x%"HWADDR_PRIx"\n", ppc_hash32_hpt_base(cpu));
+ qemu_printf("HTAB mask = 0x%"HWADDR_PRIx"\n", ppc_hash32_hpt_mask(cpu));
+
+ qemu_printf("\nSegment registers:\n");
+ for (i = 0; i < 32; i++) {
+ sr = env->sr[i];
+ if (sr & 0x80000000) {
+ qemu_printf("%02d T=%d Ks=%d Kp=%d BUID=0x%03x "
+ "CNTLR_SPEC=0x%05x\n", i,
+ sr & 0x80000000 ? 1 : 0, sr & 0x40000000 ? 1 : 0,
+ sr & 0x20000000 ? 1 : 0, (uint32_t)((sr >> 20) &
0x1FF),
+ (uint32_t)(sr & 0xFFFFF));
+ } else {
+ qemu_printf("%02d T=%d Ks=%d Kp=%d N=%d VSID=0x%06x\n", i,
+ sr & 0x80000000 ? 1 : 0, sr & 0x40000000 ? 1 : 0,
+ sr & 0x20000000 ? 1 : 0, sr & 0x10000000 ? 1 : 0,
+ (uint32_t)(sr & 0x00FFFFFF));
+ }
+ }
+
+ qemu_printf("\nBATs:\n");
+ mmu6xx_dump_BATs(env, ACCESS_INT);
+ mmu6xx_dump_BATs(env, ACCESS_CODE);
+
+ if (env->id_tlbs != 1) {
+ qemu_printf("ERROR: 6xx MMU should have separated TLB"
+ " for code and data\n");
+ }
+
+ qemu_printf("\nTLBs [EPN EPN + SIZE]\n");
+
+ for (type = 0; type < 2; type++) {
+ for (way = 0; way < env->nb_ways; way++) {
+ for (entry = env->nb_tlb * type + env->tlb_per_way * way;
+ entry < (env->nb_tlb * type + env->tlb_per_way * (way + 1));
+ entry++) {
+
+ tlb = &env->tlb.tlb6[entry];
+ qemu_printf("%s TLB %02d/%02d way:%d %s ["
+ TARGET_FMT_lx " " TARGET_FMT_lx "]\n",
+ type ? "code" : "data", entry % env->nb_tlb,
+ env->nb_tlb, way,
+ pte_is_valid(tlb->pte0) ? "valid" : "inval",
+ tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE);
+ }
+ }
+ }
+}
+
+void dump_mmu(CPUPPCState *env)
+{
+ switch (env->mmu_model) {
+ case POWERPC_MMU_BOOKE:
+ mmubooke_dump_mmu(env);
+ break;
+ case POWERPC_MMU_BOOKE206:
+ mmubooke206_dump_mmu(env);
+ break;
+ case POWERPC_MMU_SOFT_6xx:
+ case POWERPC_MMU_SOFT_74xx:
+ mmu6xx_dump_mmu(env);
+ break;
+#if defined(TARGET_PPC64)
+ case POWERPC_MMU_64B:
+ case POWERPC_MMU_2_03:
+ case POWERPC_MMU_2_06:
+ case POWERPC_MMU_2_07:
+ dump_slb(env_archcpu(env));
+ break;
+ case POWERPC_MMU_3_00:
+ if (ppc64_v3_radix(env_archcpu(env))) {
+ qemu_log_mask(LOG_UNIMP, "%s: the PPC64 MMU is unsupported\n",
+ __func__);
+ } else {
+ dump_slb(env_archcpu(env));
+ }
+ break;
+#endif
+ default:
+ qemu_log_mask(LOG_UNIMP, "%s: unimplemented\n", __func__);
+ }
+}
+
+static int check_physical(CPUPPCState *env, mmu_ctx_t *ctx, target_ulong eaddr,
+ MMUAccessType access_type)
+{
+ int in_plb, ret;
+
+ ctx->raddr = eaddr;
+ ctx->prot = PAGE_READ | PAGE_EXEC;
+ ret = 0;
+ switch (env->mmu_model) {
+ case POWERPC_MMU_SOFT_6xx:
+ case POWERPC_MMU_SOFT_74xx:
+ case POWERPC_MMU_SOFT_4xx:
+ case POWERPC_MMU_REAL:
+ case POWERPC_MMU_BOOKE:
+ ctx->prot |= PAGE_WRITE;
+ break;
+
+ case POWERPC_MMU_SOFT_4xx_Z:
+ if (unlikely(msr_pe != 0)) {
+ /*
+ * 403 family add some particular protections, using
+ * PBL/PBU registers for accesses with no translation.
+ */
+ in_plb =
+ /* Check PLB validity */
+ (env->pb[0] < env->pb[1] &&
+ /* and address in plb area */
+ eaddr >= env->pb[0] && eaddr < env->pb[1]) ||
+ (env->pb[2] < env->pb[3] &&
+ eaddr >= env->pb[2] && eaddr < env->pb[3]) ? 1 : 0;
+ if (in_plb ^ msr_px) {
+ /* Access in protected area */
+ if (access_type == MMU_DATA_STORE) {
+ /* Access is not allowed */
+ ret = -2;
+ }
+ } else {
+ /* Read-write access is allowed */
+ ctx->prot |= PAGE_WRITE;
+ }
+ }
+ break;
+
+ default:
+ /* Caller's checks mean we should never get here for other models */
+ abort();
+ return -1;
+ }
+
+ return ret;
+}
+
+int get_physical_address_wtlb(CPUPPCState *env, mmu_ctx_t *ctx,
+ target_ulong eaddr,
+ MMUAccessType access_type, int type,
+ int mmu_idx)
+{
+ int ret = -1;
+ bool real_mode = (type == ACCESS_CODE && msr_ir == 0)
+ || (type != ACCESS_CODE && msr_dr == 0);
+
+ switch (env->mmu_model) {
+ case POWERPC_MMU_SOFT_6xx:
+ case POWERPC_MMU_SOFT_74xx:
+ if (real_mode) {
+ ret = check_physical(env, ctx, eaddr, access_type);
+ } else {
+ /* Try to find a BAT */
+ if (env->nb_BATs != 0) {
+ ret = get_bat_6xx_tlb(env, ctx, eaddr, access_type);
+ }
+ if (ret < 0) {
+ /* We didn't match any BAT entry or don't have BATs */
+ ret = get_segment_6xx_tlb(env, ctx, eaddr, access_type, type);
+ }
+ }
+ break;
+
+ case POWERPC_MMU_SOFT_4xx:
+ case POWERPC_MMU_SOFT_4xx_Z:
+ if (real_mode) {
+ ret = check_physical(env, ctx, eaddr, access_type);
+ } else {
+ ret = mmu40x_get_physical_address(env, ctx, eaddr, access_type);
+ }
+ break;
+ case POWERPC_MMU_BOOKE:
+ ret = mmubooke_get_physical_address(env, ctx, eaddr, access_type);
+ break;
+ case POWERPC_MMU_BOOKE206:
+ ret = mmubooke206_get_physical_address(env, ctx, eaddr, access_type,
+ mmu_idx);
+ break;
+ case POWERPC_MMU_MPC8xx:
+ /* XXX: TODO */
+ cpu_abort(env_cpu(env), "MPC8xx MMU model is not implemented\n");
+ break;
+ case POWERPC_MMU_REAL:
+ if (real_mode) {
+ ret = check_physical(env, ctx, eaddr, access_type);
+ } else {
+ cpu_abort(env_cpu(env),
+ "PowerPC in real mode do not do any translation\n");
+ }
+ return -1;
+ default:
+ cpu_abort(env_cpu(env), "Unknown or invalid MMU model\n");
+ return -1;
+ }
+
+ return ret;
+}
+
+int get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
+ target_ulong eaddr, MMUAccessType access_type,
+ int type)
+{
+ return get_physical_address_wtlb(env, ctx, eaddr, access_type, type, 0);
+}
+
+hwaddr ppc_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
+{
+ PowerPCCPU *cpu = POWERPC_CPU(cs);
+ CPUPPCState *env = &cpu->env;
+ mmu_ctx_t ctx;
+
+ switch (env->mmu_model) {
+#if defined(TARGET_PPC64)
+ case POWERPC_MMU_64B:
+ case POWERPC_MMU_2_03:
+ case POWERPC_MMU_2_06:
+ case POWERPC_MMU_2_07:
+ return ppc_hash64_get_phys_page_debug(cpu, addr);
+ case POWERPC_MMU_3_00:
+ return ppc64_v3_get_phys_page_debug(cpu, addr);
+#endif
+
+ case POWERPC_MMU_32B:
+ case POWERPC_MMU_601:
+ return ppc_hash32_get_phys_page_debug(cpu, addr);
+
+ default:
+ ;
+ }
+
+ if (unlikely(get_physical_address(env, &ctx, addr, MMU_DATA_LOAD,
+ ACCESS_INT) != 0)) {
+
+ /*
+ * Some MMUs have separate TLBs for code and data. If we only
+ * try an ACCESS_INT, we may not be able to read instructions
+ * mapped by code TLBs, so we also try a ACCESS_CODE.
+ */
+ if (unlikely(get_physical_address(env, &ctx, addr, MMU_INST_FETCH,
+ ACCESS_CODE) != 0)) {
+ return -1;
+ }
+ }
+
+ return ctx.raddr & TARGET_PAGE_MASK;
+}
+
+static void booke206_update_mas_tlb_miss(CPUPPCState *env, target_ulong
address,
+ MMUAccessType access_type, int
mmu_idx)
+{
+ uint32_t epid;
+ bool as, pr;
+ uint32_t missed_tid = 0;
+ bool use_epid = mmubooke206_get_as(env, mmu_idx, &epid, &as, &pr);
+
+ if (access_type == MMU_INST_FETCH) {
+ as = msr_ir;
+ }
+ env->spr[SPR_BOOKE_MAS0] = env->spr[SPR_BOOKE_MAS4] & MAS4_TLBSELD_MASK;
+ env->spr[SPR_BOOKE_MAS1] = env->spr[SPR_BOOKE_MAS4] & MAS4_TSIZED_MASK;
+ env->spr[SPR_BOOKE_MAS2] = env->spr[SPR_BOOKE_MAS4] & MAS4_WIMGED_MASK;
+ env->spr[SPR_BOOKE_MAS3] = 0;
+ env->spr[SPR_BOOKE_MAS6] = 0;
+ env->spr[SPR_BOOKE_MAS7] = 0;
+
+ /* AS */
+ if (as) {
+ env->spr[SPR_BOOKE_MAS1] |= MAS1_TS;
+ env->spr[SPR_BOOKE_MAS6] |= MAS6_SAS;
+ }
+
+ env->spr[SPR_BOOKE_MAS1] |= MAS1_VALID;
+ env->spr[SPR_BOOKE_MAS2] |= address & MAS2_EPN_MASK;
+
+ if (!use_epid) {
+ switch (env->spr[SPR_BOOKE_MAS4] & MAS4_TIDSELD_PIDZ) {
+ case MAS4_TIDSELD_PID0:
+ missed_tid = env->spr[SPR_BOOKE_PID];
+ break;
+ case MAS4_TIDSELD_PID1:
+ missed_tid = env->spr[SPR_BOOKE_PID1];
+ break;
+ case MAS4_TIDSELD_PID2:
+ missed_tid = env->spr[SPR_BOOKE_PID2];
+ break;
+ }
+ env->spr[SPR_BOOKE_MAS6] |= env->spr[SPR_BOOKE_PID] << 16;
+ } else {
+ missed_tid = epid;
+ env->spr[SPR_BOOKE_MAS6] |= missed_tid << 16;
+ }
+ env->spr[SPR_BOOKE_MAS1] |= (missed_tid << MAS1_TID_SHIFT);
+
+
+ /* next victim logic */
+ env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_ESEL_SHIFT;
+ env->last_way++;
+ env->last_way &= booke206_tlb_ways(env, 0) - 1;
+ env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_NV_SHIFT;
+}
+
+/* Perform address translation */
+static int cpu_ppc_handle_mmu_fault(CPUPPCState *env, target_ulong address,
+ MMUAccessType access_type, int mmu_idx)
+{
+ CPUState *cs = env_cpu(env);
+ PowerPCCPU *cpu = POWERPC_CPU(cs);
+ mmu_ctx_t ctx;
+ int type;
+ int ret = 0;
+
+ if (access_type == MMU_INST_FETCH) {
+ /* code access */
+ type = ACCESS_CODE;
+ } else {
+ /* data access */
+ type = env->access_type;
+ }
+ ret = get_physical_address_wtlb(env, &ctx, address, access_type,
+ type, mmu_idx);
+ if (ret == 0) {
+ tlb_set_page(cs, address & TARGET_PAGE_MASK,
+ ctx.raddr & TARGET_PAGE_MASK, ctx.prot,
+ mmu_idx, TARGET_PAGE_SIZE);
+ ret = 0;
+ } else if (ret < 0) {
+ LOG_MMU_STATE(cs);
+ if (type == ACCESS_CODE) {
+ switch (ret) {
+ case -1:
+ /* No matches in page tables or TLB */
+ switch (env->mmu_model) {
+ case POWERPC_MMU_SOFT_6xx:
+ cs->exception_index = POWERPC_EXCP_IFTLB;
+ env->error_code = 1 << 18;
+ env->spr[SPR_IMISS] = address;
+ env->spr[SPR_ICMP] = 0x80000000 | ctx.ptem;
+ goto tlb_miss;
+ case POWERPC_MMU_SOFT_74xx:
+ cs->exception_index = POWERPC_EXCP_IFTLB;
+ goto tlb_miss_74xx;
+ case POWERPC_MMU_SOFT_4xx:
+ case POWERPC_MMU_SOFT_4xx_Z:
+ cs->exception_index = POWERPC_EXCP_ITLB;
+ env->error_code = 0;
+ env->spr[SPR_40x_DEAR] = address;
+ env->spr[SPR_40x_ESR] = 0x00000000;
+ break;
+ case POWERPC_MMU_BOOKE206:
+ booke206_update_mas_tlb_miss(env, address, 2, mmu_idx);
+ /* fall through */
+ case POWERPC_MMU_BOOKE:
+ cs->exception_index = POWERPC_EXCP_ITLB;
+ env->error_code = 0;
+ env->spr[SPR_BOOKE_DEAR] = address;
+ env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx,
MMU_DATA_LOAD);
+ return -1;
+ case POWERPC_MMU_MPC8xx:
+ /* XXX: TODO */
+ cpu_abort(cs, "MPC8xx MMU model is not implemented\n");
+ break;
+ case POWERPC_MMU_REAL:
+ cpu_abort(cs, "PowerPC in real mode should never raise "
+ "any MMU exceptions\n");
+ return -1;
+ default:
+ cpu_abort(cs, "Unknown or invalid MMU model\n");
+ return -1;
+ }
+ break;
+ case -2:
+ /* Access rights violation */
+ cs->exception_index = POWERPC_EXCP_ISI;
+ env->error_code = 0x08000000;
+ break;
+ case -3:
+ /* No execute protection violation */
+ if ((env->mmu_model == POWERPC_MMU_BOOKE) ||
+ (env->mmu_model == POWERPC_MMU_BOOKE206)) {
+ env->spr[SPR_BOOKE_ESR] = 0x00000000;
+ }
+ cs->exception_index = POWERPC_EXCP_ISI;
+ env->error_code = 0x10000000;
+ break;
+ case -4:
+ /* Direct store exception */
+ /* No code fetch is allowed in direct-store areas */
+ cs->exception_index = POWERPC_EXCP_ISI;
+ env->error_code = 0x10000000;
+ break;
+ }
+ } else {
+ switch (ret) {
+ case -1:
+ /* No matches in page tables or TLB */
+ switch (env->mmu_model) {
+ case POWERPC_MMU_SOFT_6xx:
+ if (access_type == MMU_DATA_STORE) {
+ cs->exception_index = POWERPC_EXCP_DSTLB;
+ env->error_code = 1 << 16;
+ } else {
+ cs->exception_index = POWERPC_EXCP_DLTLB;
+ env->error_code = 0;
+ }
+ env->spr[SPR_DMISS] = address;
+ env->spr[SPR_DCMP] = 0x80000000 | ctx.ptem;
+ tlb_miss:
+ env->error_code |= ctx.key << 19;
+ env->spr[SPR_HASH1] = ppc_hash32_hpt_base(cpu) +
+ get_pteg_offset32(cpu, ctx.hash[0]);
+ env->spr[SPR_HASH2] = ppc_hash32_hpt_base(cpu) +
+ get_pteg_offset32(cpu, ctx.hash[1]);
+ break;
+ case POWERPC_MMU_SOFT_74xx:
+ if (access_type == MMU_DATA_STORE) {
+ cs->exception_index = POWERPC_EXCP_DSTLB;
+ } else {
+ cs->exception_index = POWERPC_EXCP_DLTLB;
+ }
+ tlb_miss_74xx:
+ /* Implement LRU algorithm */
+ env->error_code = ctx.key << 19;
+ env->spr[SPR_TLBMISS] = (address & ~((target_ulong)0x3)) |
+ ((env->last_way + 1) & (env->nb_ways - 1));
+ env->spr[SPR_PTEHI] = 0x80000000 | ctx.ptem;
+ break;
+ case POWERPC_MMU_SOFT_4xx:
+ case POWERPC_MMU_SOFT_4xx_Z:
+ cs->exception_index = POWERPC_EXCP_DTLB;
+ env->error_code = 0;
+ env->spr[SPR_40x_DEAR] = address;
+ if (access_type == MMU_DATA_STORE) {
+ env->spr[SPR_40x_ESR] = 0x00800000;
+ } else {
+ env->spr[SPR_40x_ESR] = 0x00000000;
+ }
+ break;
+ case POWERPC_MMU_MPC8xx:
+ /* XXX: TODO */
+ cpu_abort(cs, "MPC8xx MMU model is not implemented\n");
+ break;
+ case POWERPC_MMU_BOOKE206:
+ booke206_update_mas_tlb_miss(env, address, access_type,
mmu_idx);
+ /* fall through */
+ case POWERPC_MMU_BOOKE:
+ cs->exception_index = POWERPC_EXCP_DTLB;
+ env->error_code = 0;
+ env->spr[SPR_BOOKE_DEAR] = address;
+ env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx,
access_type);
+ return -1;
+ case POWERPC_MMU_REAL:
+ cpu_abort(cs, "PowerPC in real mode should never raise "
+ "any MMU exceptions\n");
+ return -1;
+ default:
+ cpu_abort(cs, "Unknown or invalid MMU model\n");
+ return -1;
+ }
+ break;
+ case -2:
+ /* Access rights violation */
+ cs->exception_index = POWERPC_EXCP_DSI;
+ env->error_code = 0;
+ if (env->mmu_model == POWERPC_MMU_SOFT_4xx
+ || env->mmu_model == POWERPC_MMU_SOFT_4xx_Z) {
+ env->spr[SPR_40x_DEAR] = address;
+ if (access_type == MMU_DATA_STORE) {
+ env->spr[SPR_40x_ESR] |= 0x00800000;
+ }
+ } else if ((env->mmu_model == POWERPC_MMU_BOOKE) ||
+ (env->mmu_model == POWERPC_MMU_BOOKE206)) {
+ env->spr[SPR_BOOKE_DEAR] = address;
+ env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx,
access_type);
+ } else {
+ env->spr[SPR_DAR] = address;
+ if (access_type == MMU_DATA_STORE) {
+ env->spr[SPR_DSISR] = 0x0A000000;
+ } else {
+ env->spr[SPR_DSISR] = 0x08000000;
+ }
+ }
+ break;
+ case -4:
+ /* Direct store exception */
+ switch (type) {
+ case ACCESS_FLOAT:
+ /* Floating point load/store */
+ cs->exception_index = POWERPC_EXCP_ALIGN;
+ env->error_code = POWERPC_EXCP_ALIGN_FP;
+ env->spr[SPR_DAR] = address;
+ break;
+ case ACCESS_RES:
+ /* lwarx, ldarx or stwcx. */
+ cs->exception_index = POWERPC_EXCP_DSI;
+ env->error_code = 0;
+ env->spr[SPR_DAR] = address;
+ if (access_type == MMU_DATA_STORE) {
+ env->spr[SPR_DSISR] = 0x06000000;
+ } else {
+ env->spr[SPR_DSISR] = 0x04000000;
+ }
+ break;
+ case ACCESS_EXT:
+ /* eciwx or ecowx */
+ cs->exception_index = POWERPC_EXCP_DSI;
+ env->error_code = 0;
+ env->spr[SPR_DAR] = address;
+ if (access_type == MMU_DATA_STORE) {
+ env->spr[SPR_DSISR] = 0x06100000;
+ } else {
+ env->spr[SPR_DSISR] = 0x04100000;
+ }
+ break;
+ default:
+ printf("DSI: invalid exception (%d)\n", ret);
+ cs->exception_index = POWERPC_EXCP_PROGRAM;
+ env->error_code =
+ POWERPC_EXCP_INVAL | POWERPC_EXCP_INVAL_INVAL;
+ env->spr[SPR_DAR] = address;
+ break;
+ }
+ break;
+ }
+ }
+ ret = 1;
+ }
+
+ return ret;
+}
+
+bool ppc_cpu_tlb_fill(CPUState *cs, vaddr addr, int size,
+ MMUAccessType access_type, int mmu_idx,
+ bool probe, uintptr_t retaddr)
+{
+ PowerPCCPU *cpu = POWERPC_CPU(cs);
+ PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cs);
+ CPUPPCState *env = &cpu->env;
+ int ret;
+
+ if (pcc->handle_mmu_fault) {
+ ret = pcc->handle_mmu_fault(cpu, addr, access_type, mmu_idx);
+ } else {
+ ret = cpu_ppc_handle_mmu_fault(env, addr, access_type, mmu_idx);
+ }
+ if (unlikely(ret != 0)) {
+ if (probe) {
+ return false;
+ }
+ raise_exception_err_ra(env, cs->exception_index, env->error_code,
+ retaddr);
+ }
+ return true;
+}
diff --git a/target/ppc/mmu_helper.c b/target/ppc/mmu_helper.c
index e7ba39c9e1..dbf7b398cd 100644
--- a/target/ppc/mmu_helper.c
+++ b/target/ppc/mmu_helper.c
@@ -33,1736 +33,156 @@
#include "internal.h"
#include "mmu-book3s-v3.h"
#include "mmu-radix64.h"
+#include "exec/helper-proto.h"
+#include "exec/cpu_ldst.h"
-#ifdef CONFIG_TCG
-#include "exec/helper-proto.h"
-#include "exec/cpu_ldst.h"
-#endif
-/* #define DEBUG_MMU */
-/* #define DEBUG_BATS */
-/* #define DEBUG_SOFTWARE_TLB */
-/* #define DUMP_PAGE_TABLES */
-/* #define FLUSH_ALL_TLBS */
-
-#ifdef DEBUG_MMU
-# define LOG_MMU_STATE(cpu) log_cpu_state_mask(CPU_LOG_MMU, (cpu), 0)
-#else
-# define LOG_MMU_STATE(cpu) do { } while (0)
-#endif
-
-#ifdef DEBUG_SOFTWARE_TLB
-# define LOG_SWTLB(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__)
-#else
-# define LOG_SWTLB(...) do { } while (0)
-#endif
-
-#ifdef DEBUG_BATS
-# define LOG_BATS(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__)
-#else
-# define LOG_BATS(...) do { } while (0)
-#endif
-
-/*****************************************************************************/
-/* PowerPC MMU emulation */
-
-/* Context used internally during MMU translations */
-typedef struct mmu_ctx_t mmu_ctx_t;
-struct mmu_ctx_t {
- hwaddr raddr; /* Real address */
- hwaddr eaddr; /* Effective address */
- int prot; /* Protection bits */
- hwaddr hash[2]; /* Pagetable hash values */
- target_ulong ptem; /* Virtual segment ID | API */
- int key; /* Access key */
- int nx; /* Non-execute area */
-};
-
-/* Common routines used by software and hardware TLBs emulation */
-static inline int pte_is_valid(target_ulong pte0)
-{
- return pte0 & 0x80000000 ? 1 : 0;
-}
-
-static inline void pte_invalidate(target_ulong *pte0)
-{
- *pte0 &= ~0x80000000;
-}
-
-#define PTE_PTEM_MASK 0x7FFFFFBF
-#define PTE_CHECK_MASK (TARGET_PAGE_MASK | 0x7B)
-
-static int pp_check(int key, int pp, int nx)
-{
- int access;
-
- /* Compute access rights */
- access = 0;
- if (key == 0) {
- switch (pp) {
- case 0x0:
- case 0x1:
- case 0x2:
- access |= PAGE_WRITE;
- /* fall through */
- case 0x3:
- access |= PAGE_READ;
- break;
- }
- } else {
- switch (pp) {
- case 0x0:
- access = 0;
- break;
- case 0x1:
- case 0x3:
- access = PAGE_READ;
- break;
- case 0x2:
- access = PAGE_READ | PAGE_WRITE;
- break;
- }
- }
- if (nx == 0) {
- access |= PAGE_EXEC;
- }
-
- return access;
-}
-
-static int check_prot(int prot, MMUAccessType access_type)
-{
- return prot & prot_for_access_type(access_type) ? 0 : -2;
-}
-
-static int ppc6xx_tlb_pte_check(mmu_ctx_t *ctx, target_ulong pte0,
- target_ulong pte1, int h,
- MMUAccessType access_type)
-{
- target_ulong ptem, mmask;
- int access, ret, pteh, ptev, pp;
-
- ret = -1;
- /* Check validity and table match */
- ptev = pte_is_valid(pte0);
- pteh = (pte0 >> 6) & 1;
- if (ptev && h == pteh) {
- /* Check vsid & api */
- ptem = pte0 & PTE_PTEM_MASK;
- mmask = PTE_CHECK_MASK;
- pp = pte1 & 0x00000003;
- if (ptem == ctx->ptem) {
- if (ctx->raddr != (hwaddr)-1ULL) {
- /* all matches should have equal RPN, WIMG & PP */
- if ((ctx->raddr & mmask) != (pte1 & mmask)) {
- qemu_log_mask(CPU_LOG_MMU, "Bad RPN/WIMG/PP\n");
- return -3;
- }
- }
- /* Compute access rights */
- access = pp_check(ctx->key, pp, ctx->nx);
- /* Keep the matching PTE information */
- ctx->raddr = pte1;
- ctx->prot = access;
- ret = check_prot(ctx->prot, access_type);
- if (ret == 0) {
- /* Access granted */
- qemu_log_mask(CPU_LOG_MMU, "PTE access granted !\n");
- } else {
- /* Access right violation */
- qemu_log_mask(CPU_LOG_MMU, "PTE access rejected\n");
- }
- }
- }
-
- return ret;
-}
-
-static int pte_update_flags(mmu_ctx_t *ctx, target_ulong *pte1p,
- int ret, MMUAccessType access_type)
-{
- int store = 0;
-
- /* Update page flags */
- if (!(*pte1p & 0x00000100)) {
- /* Update accessed flag */
- *pte1p |= 0x00000100;
- store = 1;
- }
- if (!(*pte1p & 0x00000080)) {
- if (access_type == MMU_DATA_STORE && ret == 0) {
- /* Update changed flag */
- *pte1p |= 0x00000080;
- store = 1;
- } else {
- /* Force page fault for first write access */
- ctx->prot &= ~PAGE_WRITE;
- }
- }
-
- return store;
-}
-
-/* Software driven TLB helpers */
-static inline int ppc6xx_tlb_getnum(CPUPPCState *env, target_ulong eaddr,
- int way, int is_code)
-{
- int nr;
-
- /* Select TLB num in a way from address */
- nr = (eaddr >> TARGET_PAGE_BITS) & (env->tlb_per_way - 1);
- /* Select TLB way */
- nr += env->tlb_per_way * way;
- /* 6xx have separate TLBs for instructions and data */
- if (is_code && env->id_tlbs == 1) {
- nr += env->nb_tlb;
- }
-
- return nr;
-}
-
-static inline void ppc6xx_tlb_invalidate_all(CPUPPCState *env)
-{
- ppc6xx_tlb_t *tlb;
- int nr, max;
-
- /* LOG_SWTLB("Invalidate all TLBs\n"); */
- /* Invalidate all defined software TLB */
- max = env->nb_tlb;
- if (env->id_tlbs == 1) {
- max *= 2;
- }
- for (nr = 0; nr < max; nr++) {
- tlb = &env->tlb.tlb6[nr];
- pte_invalidate(&tlb->pte0);
- }
- tlb_flush(env_cpu(env));
-}
-
-static inline void ppc6xx_tlb_invalidate_virt2(CPUPPCState *env,
- target_ulong eaddr,
- int is_code, int match_epn)
-{
-#if !defined(FLUSH_ALL_TLBS)
- CPUState *cs = env_cpu(env);
- ppc6xx_tlb_t *tlb;
- int way, nr;
-
- /* Invalidate ITLB + DTLB, all ways */
- for (way = 0; way < env->nb_ways; way++) {
- nr = ppc6xx_tlb_getnum(env, eaddr, way, is_code);
- tlb = &env->tlb.tlb6[nr];
- if (pte_is_valid(tlb->pte0) && (match_epn == 0 || eaddr == tlb->EPN)) {
- LOG_SWTLB("TLB invalidate %d/%d " TARGET_FMT_lx "\n", nr,
- env->nb_tlb, eaddr);
- pte_invalidate(&tlb->pte0);
- tlb_flush_page(cs, tlb->EPN);
- }
- }
-#else
- /* XXX: PowerPC specification say this is valid as well */
- ppc6xx_tlb_invalidate_all(env);
-#endif
-}
-
-static inline void ppc6xx_tlb_invalidate_virt(CPUPPCState *env,
- target_ulong eaddr, int is_code)
-{
- ppc6xx_tlb_invalidate_virt2(env, eaddr, is_code, 0);
-}
-
-#ifdef CONFIG_TCG
-static void ppc6xx_tlb_store(CPUPPCState *env, target_ulong EPN, int way,
- int is_code, target_ulong pte0, target_ulong pte1)
-{
- ppc6xx_tlb_t *tlb;
- int nr;
-
- nr = ppc6xx_tlb_getnum(env, EPN, way, is_code);
- tlb = &env->tlb.tlb6[nr];
- LOG_SWTLB("Set TLB %d/%d EPN " TARGET_FMT_lx " PTE0 " TARGET_FMT_lx
- " PTE1 " TARGET_FMT_lx "\n", nr, env->nb_tlb, EPN, pte0, pte1);
- /* Invalidate any pending reference in QEMU for this virtual address */
- ppc6xx_tlb_invalidate_virt2(env, EPN, is_code, 1);
- tlb->pte0 = pte0;
- tlb->pte1 = pte1;
- tlb->EPN = EPN;
- /* Store last way for LRU mechanism */
- env->last_way = way;
-}
-#endif
-
-static int ppc6xx_tlb_check(CPUPPCState *env, mmu_ctx_t *ctx,
- target_ulong eaddr, MMUAccessType access_type)
-{
- ppc6xx_tlb_t *tlb;
- int nr, best, way;
- int ret;
-
- best = -1;
- ret = -1; /* No TLB found */
- for (way = 0; way < env->nb_ways; way++) {
- nr = ppc6xx_tlb_getnum(env, eaddr, way, access_type == MMU_INST_FETCH);
- tlb = &env->tlb.tlb6[nr];
- /* This test "emulates" the PTE index match for hardware TLBs */
- if ((eaddr & TARGET_PAGE_MASK) != tlb->EPN) {
- LOG_SWTLB("TLB %d/%d %s [" TARGET_FMT_lx " " TARGET_FMT_lx
- "] <> " TARGET_FMT_lx "\n", nr, env->nb_tlb,
- pte_is_valid(tlb->pte0) ? "valid" : "inval",
- tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE, eaddr);
- continue;
- }
- LOG_SWTLB("TLB %d/%d %s " TARGET_FMT_lx " <> " TARGET_FMT_lx " "
- TARGET_FMT_lx " %c %c\n", nr, env->nb_tlb,
- pte_is_valid(tlb->pte0) ? "valid" : "inval",
- tlb->EPN, eaddr, tlb->pte1,
- access_type == MMU_DATA_STORE ? 'S' : 'L',
- access_type == MMU_INST_FETCH ? 'I' : 'D');
- switch (ppc6xx_tlb_pte_check(ctx, tlb->pte0, tlb->pte1,
- 0, access_type)) {
- case -3:
- /* TLB inconsistency */
- return -1;
- case -2:
- /* Access violation */
- ret = -2;
- best = nr;
- break;
- case -1:
- default:
- /* No match */
- break;
- case 0:
- /* access granted */
- /*
- * XXX: we should go on looping to check all TLBs
- * consistency but we can speed-up the whole thing as
- * the result would be undefined if TLBs are not
- * consistent.
- */
- ret = 0;
- best = nr;
- goto done;
- }
- }
- if (best != -1) {
- done:
- LOG_SWTLB("found TLB at addr " TARGET_FMT_plx " prot=%01x ret=%d\n",
- ctx->raddr & TARGET_PAGE_MASK, ctx->prot, ret);
- /* Update page flags */
- pte_update_flags(ctx, &env->tlb.tlb6[best].pte1, ret, access_type);
- }
-
- return ret;
-}
-
-/* Perform BAT hit & translation */
-static inline void bat_size_prot(CPUPPCState *env, target_ulong *blp,
- int *validp, int *protp, target_ulong *BATu,
- target_ulong *BATl)
-{
- target_ulong bl;
- int pp, valid, prot;
-
- bl = (*BATu & 0x00001FFC) << 15;
- valid = 0;
- prot = 0;
- if (((msr_pr == 0) && (*BATu & 0x00000002)) ||
- ((msr_pr != 0) && (*BATu & 0x00000001))) {
- valid = 1;
- pp = *BATl & 0x00000003;
- if (pp != 0) {
- prot = PAGE_READ | PAGE_EXEC;
- if (pp == 0x2) {
- prot |= PAGE_WRITE;
- }
- }
- }
- *blp = bl;
- *validp = valid;
- *protp = prot;
-}
-
-static int get_bat_6xx_tlb(CPUPPCState *env, mmu_ctx_t *ctx,
- target_ulong virtual, MMUAccessType access_type)
-{
- target_ulong *BATlt, *BATut, *BATu, *BATl;
- target_ulong BEPIl, BEPIu, bl;
- int i, valid, prot;
- int ret = -1;
- bool ifetch = access_type == MMU_INST_FETCH;
-
- LOG_BATS("%s: %cBAT v " TARGET_FMT_lx "\n", __func__,
- ifetch ? 'I' : 'D', virtual);
- if (ifetch) {
- BATlt = env->IBAT[1];
- BATut = env->IBAT[0];
- } else {
- BATlt = env->DBAT[1];
- BATut = env->DBAT[0];
- }
- for (i = 0; i < env->nb_BATs; i++) {
- BATu = &BATut[i];
- BATl = &BATlt[i];
- BEPIu = *BATu & 0xF0000000;
- BEPIl = *BATu & 0x0FFE0000;
- bat_size_prot(env, &bl, &valid, &prot, BATu, BATl);
- LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx
- " BATl " TARGET_FMT_lx "\n", __func__,
- ifetch ? 'I' : 'D', i, virtual, *BATu, *BATl);
- if ((virtual & 0xF0000000) == BEPIu &&
- ((virtual & 0x0FFE0000) & ~bl) == BEPIl) {
- /* BAT matches */
- if (valid != 0) {
- /* Get physical address */
- ctx->raddr = (*BATl & 0xF0000000) |
- ((virtual & 0x0FFE0000 & bl) | (*BATl & 0x0FFE0000)) |
- (virtual & 0x0001F000);
- /* Compute access rights */
- ctx->prot = prot;
- ret = check_prot(ctx->prot, access_type);
- if (ret == 0) {
- LOG_BATS("BAT %d match: r " TARGET_FMT_plx " prot=%c%c\n",
- i, ctx->raddr, ctx->prot & PAGE_READ ? 'R' : '-',
- ctx->prot & PAGE_WRITE ? 'W' : '-');
- }
- break;
- }
- }
- }
- if (ret < 0) {
-#if defined(DEBUG_BATS)
- if (qemu_log_enabled()) {
- LOG_BATS("no BAT match for " TARGET_FMT_lx ":\n", virtual);
- for (i = 0; i < 4; i++) {
- BATu = &BATut[i];
- BATl = &BATlt[i];
- BEPIu = *BATu & 0xF0000000;
- BEPIl = *BATu & 0x0FFE0000;
- bl = (*BATu & 0x00001FFC) << 15;
- LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx
- " BATl " TARGET_FMT_lx "\n\t" TARGET_FMT_lx " "
- TARGET_FMT_lx " " TARGET_FMT_lx "\n",
- __func__, ifetch ? 'I' : 'D', i, virtual,
- *BATu, *BATl, BEPIu, BEPIl, bl);
- }
- }
-#endif
- }
- /* No hit */
- return ret;
-}
-
-/* Perform segment based translation */
-static int get_segment_6xx_tlb(CPUPPCState *env, mmu_ctx_t *ctx,
- target_ulong eaddr, MMUAccessType access_type,
- int type)
-{
- PowerPCCPU *cpu = env_archcpu(env);
- hwaddr hash;
- target_ulong vsid;
- int ds, pr, target_page_bits;
- int ret;
- target_ulong sr, pgidx;
-
- pr = msr_pr;
- ctx->eaddr = eaddr;
-
- sr = env->sr[eaddr >> 28];
- ctx->key = (((sr & 0x20000000) && (pr != 0)) ||
- ((sr & 0x40000000) && (pr == 0))) ? 1 : 0;
- ds = sr & 0x80000000 ? 1 : 0;
- ctx->nx = sr & 0x10000000 ? 1 : 0;
- vsid = sr & 0x00FFFFFF;
- target_page_bits = TARGET_PAGE_BITS;
- qemu_log_mask(CPU_LOG_MMU,
- "Check segment v=" TARGET_FMT_lx " %d " TARGET_FMT_lx
- " nip=" TARGET_FMT_lx " lr=" TARGET_FMT_lx
- " ir=%d dr=%d pr=%d %d t=%d\n",
- eaddr, (int)(eaddr >> 28), sr, env->nip, env->lr, (int)msr_ir,
- (int)msr_dr, pr != 0 ? 1 : 0, access_type == MMU_DATA_STORE, type);
- pgidx = (eaddr & ~SEGMENT_MASK_256M) >> target_page_bits;
- hash = vsid ^ pgidx;
- ctx->ptem = (vsid << 7) | (pgidx >> 10);
-
- qemu_log_mask(CPU_LOG_MMU,
- "pte segment: key=%d ds %d nx %d vsid " TARGET_FMT_lx "\n",
- ctx->key, ds, ctx->nx, vsid);
- ret = -1;
- if (!ds) {
- /* Check if instruction fetch is allowed, if needed */
- if (type != ACCESS_CODE || ctx->nx == 0) {
- /* Page address translation */
- qemu_log_mask(CPU_LOG_MMU, "htab_base " TARGET_FMT_plx
- " htab_mask " TARGET_FMT_plx
- " hash " TARGET_FMT_plx "\n",
- ppc_hash32_hpt_base(cpu), ppc_hash32_hpt_mask(cpu), hash);
- ctx->hash[0] = hash;
- ctx->hash[1] = ~hash;
-
- /* Initialize real address with an invalid value */
- ctx->raddr = (hwaddr)-1ULL;
- /* Software TLB search */
- ret = ppc6xx_tlb_check(env, ctx, eaddr, access_type);
-#if defined(DUMP_PAGE_TABLES)
- if (qemu_loglevel_mask(CPU_LOG_MMU)) {
- CPUState *cs = env_cpu(env);
- hwaddr curaddr;
- uint32_t a0, a1, a2, a3;
-
- qemu_log("Page table: " TARGET_FMT_plx " len " TARGET_FMT_plx
- "\n", ppc_hash32_hpt_base(cpu),
- ppc_hash32_hpt_mask(env) + 0x80);
- for (curaddr = ppc_hash32_hpt_base(cpu);
- curaddr < (ppc_hash32_hpt_base(cpu)
- + ppc_hash32_hpt_mask(cpu) + 0x80);
- curaddr += 16) {
- a0 = ldl_phys(cs->as, curaddr);
- a1 = ldl_phys(cs->as, curaddr + 4);
- a2 = ldl_phys(cs->as, curaddr + 8);
- a3 = ldl_phys(cs->as, curaddr + 12);
- if (a0 != 0 || a1 != 0 || a2 != 0 || a3 != 0) {
- qemu_log(TARGET_FMT_plx ": %08x %08x %08x %08x\n",
- curaddr, a0, a1, a2, a3);
- }
- }
- }
-#endif
- } else {
- qemu_log_mask(CPU_LOG_MMU, "No access allowed\n");
- ret = -3;
- }
- } else {
- target_ulong sr;
-
- qemu_log_mask(CPU_LOG_MMU, "direct store...\n");
- /* Direct-store segment : absolutely *BUGGY* for now */
-
- /*
- * Direct-store implies a 32-bit MMU.
- * Check the Segment Register's bus unit ID (BUID).
- */
- sr = env->sr[eaddr >> 28];
- if ((sr & 0x1FF00000) >> 20 == 0x07f) {
- /*
- * Memory-forced I/O controller interface access
- *
- * If T=1 and BUID=x'07F', the 601 performs a memory
- * access to SR[28-31] LA[4-31], bypassing all protection
- * mechanisms.
- */
- ctx->raddr = ((sr & 0xF) << 28) | (eaddr & 0x0FFFFFFF);
- ctx->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
- return 0;
- }
-
- switch (type) {
- case ACCESS_INT:
- /* Integer load/store : only access allowed */
- break;
- case ACCESS_CODE:
- /* No code fetch is allowed in direct-store areas */
- return -4;
- case ACCESS_FLOAT:
- /* Floating point load/store */
- return -4;
- case ACCESS_RES:
- /* lwarx, ldarx or srwcx. */
- return -4;
- case ACCESS_CACHE:
- /*
- * dcba, dcbt, dcbtst, dcbf, dcbi, dcbst, dcbz, or icbi
- *
- * Should make the instruction do no-op. As it already do
- * no-op, it's quite easy :-)
- */
- ctx->raddr = eaddr;
- return 0;
- case ACCESS_EXT:
- /* eciwx or ecowx */
- return -4;
- default:
- qemu_log_mask(CPU_LOG_MMU, "ERROR: instruction should not need "
- "address translation\n");
- return -4;
- }
- if ((access_type == MMU_DATA_STORE || ctx->key != 1) &&
- (access_type == MMU_DATA_LOAD || ctx->key != 0)) {
- ctx->raddr = eaddr;
- ret = 2;
- } else {
- ret = -2;
- }
- }
-
- return ret;
-}
-
-/* Generic TLB check function for embedded PowerPC implementations */
-static int ppcemb_tlb_check(CPUPPCState *env, ppcemb_tlb_t *tlb,
- hwaddr *raddrp,
- target_ulong address, uint32_t pid, int ext,
- int i)
-{
- target_ulong mask;
-
- /* Check valid flag */
- if (!(tlb->prot & PAGE_VALID)) {
- return -1;
- }
- mask = ~(tlb->size - 1);
- LOG_SWTLB("%s: TLB %d address " TARGET_FMT_lx " PID %u <=> " TARGET_FMT_lx
- " " TARGET_FMT_lx " %u %x\n", __func__, i, address, pid,
tlb->EPN,
- mask, (uint32_t)tlb->PID, tlb->prot);
- /* Check PID */
- if (tlb->PID != 0 && tlb->PID != pid) {
- return -1;
- }
- /* Check effective address */
- if ((address & mask) != tlb->EPN) {
- return -1;
- }
- *raddrp = (tlb->RPN & mask) | (address & ~mask);
- if (ext) {
- /* Extend the physical address to 36 bits */
- *raddrp |= (uint64_t)(tlb->RPN & 0xF) << 32;
- }
-
- return 0;
-}
-
-#ifdef CONFIG_TCG
-/* Generic TLB search function for PowerPC embedded implementations */
-static int ppcemb_tlb_search(CPUPPCState *env, target_ulong address,
- uint32_t pid)
-{
- ppcemb_tlb_t *tlb;
- hwaddr raddr;
- int i, ret;
-
- /* Default return value is no match */
- ret = -1;
- for (i = 0; i < env->nb_tlb; i++) {
- tlb = &env->tlb.tlbe[i];
- if (ppcemb_tlb_check(env, tlb, &raddr, address, pid, 0, i) == 0) {
- ret = i;
- break;
- }
- }
-
- return ret;
-}
-#endif
-
-/* Helpers specific to PowerPC 40x implementations */
-static inline void ppc4xx_tlb_invalidate_all(CPUPPCState *env)
-{
- ppcemb_tlb_t *tlb;
- int i;
-
- for (i = 0; i < env->nb_tlb; i++) {
- tlb = &env->tlb.tlbe[i];
- tlb->prot &= ~PAGE_VALID;
- }
- tlb_flush(env_cpu(env));
-}
-
-static int mmu40x_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
- target_ulong address,
- MMUAccessType access_type)
-{
- ppcemb_tlb_t *tlb;
- hwaddr raddr;
- int i, ret, zsel, zpr, pr;
-
- ret = -1;
- raddr = (hwaddr)-1ULL;
- pr = msr_pr;
- for (i = 0; i < env->nb_tlb; i++) {
- tlb = &env->tlb.tlbe[i];
- if (ppcemb_tlb_check(env, tlb, &raddr, address,
- env->spr[SPR_40x_PID], 0, i) < 0) {
- continue;
- }
- zsel = (tlb->attr >> 4) & 0xF;
- zpr = (env->spr[SPR_40x_ZPR] >> (30 - (2 * zsel))) & 0x3;
- LOG_SWTLB("%s: TLB %d zsel %d zpr %d ty %d attr %08x\n",
- __func__, i, zsel, zpr, access_type, tlb->attr);
- /* Check execute enable bit */
- switch (zpr) {
- case 0x2:
- if (pr != 0) {
- goto check_perms;
- }
- /* fall through */
- case 0x3:
- /* All accesses granted */
- ctx->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
- ret = 0;
- break;
- case 0x0:
- if (pr != 0) {
- /* Raise Zone protection fault. */
- env->spr[SPR_40x_ESR] = 1 << 22;
- ctx->prot = 0;
- ret = -2;
- break;
- }
- /* fall through */
- case 0x1:
- check_perms:
- /* Check from TLB entry */
- ctx->prot = tlb->prot;
- ret = check_prot(ctx->prot, access_type);
- if (ret == -2) {
- env->spr[SPR_40x_ESR] = 0;
- }
- break;
- }
- if (ret >= 0) {
- ctx->raddr = raddr;
- LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx
- " %d %d\n", __func__, address, ctx->raddr, ctx->prot,
- ret);
- return 0;
- }
- }
- LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx
- " %d %d\n", __func__, address, raddr, ctx->prot, ret);
-
- return ret;
-}
-
-void store_40x_sler(CPUPPCState *env, uint32_t val)
-{
- /* XXX: TO BE FIXED */
- if (val != 0x00000000) {
- cpu_abort(env_cpu(env),
- "Little-endian regions are not supported by now\n");
- }
- env->spr[SPR_405_SLER] = val;
-}
-
-static int mmubooke_check_tlb(CPUPPCState *env, ppcemb_tlb_t *tlb,
- hwaddr *raddr, int *prot, target_ulong address,
- MMUAccessType access_type, int i)
-{
- int prot2;
-
- if (ppcemb_tlb_check(env, tlb, raddr, address,
- env->spr[SPR_BOOKE_PID],
- !env->nb_pids, i) >= 0) {
- goto found_tlb;
- }
-
- if (env->spr[SPR_BOOKE_PID1] &&
- ppcemb_tlb_check(env, tlb, raddr, address,
- env->spr[SPR_BOOKE_PID1], 0, i) >= 0) {
- goto found_tlb;
- }
-
- if (env->spr[SPR_BOOKE_PID2] &&
- ppcemb_tlb_check(env, tlb, raddr, address,
- env->spr[SPR_BOOKE_PID2], 0, i) >= 0) {
- goto found_tlb;
- }
-
- LOG_SWTLB("%s: TLB entry not found\n", __func__);
- return -1;
-
-found_tlb:
-
- if (msr_pr != 0) {
- prot2 = tlb->prot & 0xF;
- } else {
- prot2 = (tlb->prot >> 4) & 0xF;
- }
-
- /* Check the address space */
- if ((access_type == MMU_INST_FETCH ? msr_ir : msr_dr) != (tlb->attr & 1)) {
- LOG_SWTLB("%s: AS doesn't match\n", __func__);
- return -1;
- }
-
- *prot = prot2;
- if (prot2 & prot_for_access_type(access_type)) {
- LOG_SWTLB("%s: good TLB!\n", __func__);
- return 0;
- }
-
- LOG_SWTLB("%s: no prot match: %x\n", __func__, prot2);
- return access_type == MMU_INST_FETCH ? -3 : -2;
-}
-
-static int mmubooke_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
- target_ulong address,
- MMUAccessType access_type)
-{
- ppcemb_tlb_t *tlb;
- hwaddr raddr;
- int i, ret;
-
- ret = -1;
- raddr = (hwaddr)-1ULL;
- for (i = 0; i < env->nb_tlb; i++) {
- tlb = &env->tlb.tlbe[i];
- ret = mmubooke_check_tlb(env, tlb, &raddr, &ctx->prot, address,
- access_type, i);
- if (ret != -1) {
- break;
- }
- }
-
- if (ret >= 0) {
- ctx->raddr = raddr;
- LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx
- " %d %d\n", __func__, address, ctx->raddr, ctx->prot,
- ret);
- } else {
- LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx
- " %d %d\n", __func__, address, raddr, ctx->prot, ret);
- }
-
- return ret;
-}
-
-#ifdef CONFIG_TCG
-static void booke206_flush_tlb(CPUPPCState *env, int flags,
- const int check_iprot)
-{
- int tlb_size;
- int i, j;
- ppcmas_tlb_t *tlb = env->tlb.tlbm;
-
- for (i = 0; i < BOOKE206_MAX_TLBN; i++) {
- if (flags & (1 << i)) {
- tlb_size = booke206_tlb_size(env, i);
- for (j = 0; j < tlb_size; j++) {
- if (!check_iprot || !(tlb[j].mas1 & MAS1_IPROT)) {
- tlb[j].mas1 &= ~MAS1_VALID;
- }
- }
- }
- tlb += booke206_tlb_size(env, i);
- }
-
- tlb_flush(env_cpu(env));
-}
-#endif
-
-static hwaddr booke206_tlb_to_page_size(CPUPPCState *env,
- ppcmas_tlb_t *tlb)
-{
- int tlbm_size;
-
- tlbm_size = (tlb->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT;
-
- return 1024ULL << tlbm_size;
-}
-
-/* TLB check function for MAS based SoftTLBs */
-static int ppcmas_tlb_check(CPUPPCState *env, ppcmas_tlb_t *tlb,
- hwaddr *raddrp, target_ulong address,
- uint32_t pid)
-{
- hwaddr mask;
- uint32_t tlb_pid;
-
- if (!msr_cm) {
- /* In 32bit mode we can only address 32bit EAs */
- address = (uint32_t)address;
- }
-
- /* Check valid flag */
- if (!(tlb->mas1 & MAS1_VALID)) {
- return -1;
- }
-
- mask = ~(booke206_tlb_to_page_size(env, tlb) - 1);
- LOG_SWTLB("%s: TLB ADDR=0x" TARGET_FMT_lx " PID=0x%x MAS1=0x%x MAS2=0x%"
- PRIx64 " mask=0x%" HWADDR_PRIx " MAS7_3=0x%" PRIx64 " MAS8=0x%"
- PRIx32 "\n", __func__, address, pid, tlb->mas1, tlb->mas2, mask,
- tlb->mas7_3, tlb->mas8);
-
- /* Check PID */
- tlb_pid = (tlb->mas1 & MAS1_TID_MASK) >> MAS1_TID_SHIFT;
- if (tlb_pid != 0 && tlb_pid != pid) {
- return -1;
- }
-
- /* Check effective address */
- if ((address & mask) != (tlb->mas2 & MAS2_EPN_MASK)) {
- return -1;
- }
-
- if (raddrp) {
- *raddrp = (tlb->mas7_3 & mask) | (address & ~mask);
- }
-
- return 0;
-}
-
-static bool is_epid_mmu(int mmu_idx)
-{
- return mmu_idx == PPC_TLB_EPID_STORE || mmu_idx == PPC_TLB_EPID_LOAD;
-}
-
-static uint32_t mmubooke206_esr(int mmu_idx, MMUAccessType access_type)
-{
- uint32_t esr = 0;
- if (access_type == MMU_DATA_STORE) {
- esr |= ESR_ST;
- }
- if (is_epid_mmu(mmu_idx)) {
- esr |= ESR_EPID;
- }
- return esr;
-}
-
-/*
- * Get EPID register given the mmu_idx. If this is regular load,
- * construct the EPID access bits from current processor state
- *
- * Get the effective AS and PR bits and the PID. The PID is returned
- * only if EPID load is requested, otherwise the caller must detect
- * the correct EPID. Return true if valid EPID is returned.
- */
-static bool mmubooke206_get_as(CPUPPCState *env,
- int mmu_idx, uint32_t *epid_out,
- bool *as_out, bool *pr_out)
-{
- if (is_epid_mmu(mmu_idx)) {
- uint32_t epidr;
- if (mmu_idx == PPC_TLB_EPID_STORE) {
- epidr = env->spr[SPR_BOOKE_EPSC];
- } else {
- epidr = env->spr[SPR_BOOKE_EPLC];
- }
- *epid_out = (epidr & EPID_EPID) >> EPID_EPID_SHIFT;
- *as_out = !!(epidr & EPID_EAS);
- *pr_out = !!(epidr & EPID_EPR);
- return true;
- } else {
- *as_out = msr_ds;
- *pr_out = msr_pr;
- return false;
- }
-}
-
-/* Check if the tlb found by hashing really matches */
-static int mmubooke206_check_tlb(CPUPPCState *env, ppcmas_tlb_t *tlb,
- hwaddr *raddr, int *prot,
- target_ulong address,
- MMUAccessType access_type, int mmu_idx)
-{
- int prot2 = 0;
- uint32_t epid;
- bool as, pr;
- bool use_epid = mmubooke206_get_as(env, mmu_idx, &epid, &as, &pr);
-
- if (!use_epid) {
- if (ppcmas_tlb_check(env, tlb, raddr, address,
- env->spr[SPR_BOOKE_PID]) >= 0) {
- goto found_tlb;
- }
-
- if (env->spr[SPR_BOOKE_PID1] &&
- ppcmas_tlb_check(env, tlb, raddr, address,
- env->spr[SPR_BOOKE_PID1]) >= 0) {
- goto found_tlb;
- }
-
- if (env->spr[SPR_BOOKE_PID2] &&
- ppcmas_tlb_check(env, tlb, raddr, address,
- env->spr[SPR_BOOKE_PID2]) >= 0) {
- goto found_tlb;
- }
- } else {
- if (ppcmas_tlb_check(env, tlb, raddr, address, epid) >= 0) {
- goto found_tlb;
- }
- }
-
- LOG_SWTLB("%s: TLB entry not found\n", __func__);
- return -1;
-
-found_tlb:
-
- if (pr) {
- if (tlb->mas7_3 & MAS3_UR) {
- prot2 |= PAGE_READ;
- }
- if (tlb->mas7_3 & MAS3_UW) {
- prot2 |= PAGE_WRITE;
- }
- if (tlb->mas7_3 & MAS3_UX) {
- prot2 |= PAGE_EXEC;
- }
- } else {
- if (tlb->mas7_3 & MAS3_SR) {
- prot2 |= PAGE_READ;
- }
- if (tlb->mas7_3 & MAS3_SW) {
- prot2 |= PAGE_WRITE;
- }
- if (tlb->mas7_3 & MAS3_SX) {
- prot2 |= PAGE_EXEC;
- }
- }
-
- /* Check the address space and permissions */
- if (access_type == MMU_INST_FETCH) {
- /* There is no way to fetch code using epid load */
- assert(!use_epid);
- as = msr_ir;
- }
-
- if (as != ((tlb->mas1 & MAS1_TS) >> MAS1_TS_SHIFT)) {
- LOG_SWTLB("%s: AS doesn't match\n", __func__);
- return -1;
- }
-
- *prot = prot2;
- if (prot2 & prot_for_access_type(access_type)) {
- LOG_SWTLB("%s: good TLB!\n", __func__);
- return 0;
- }
-
- LOG_SWTLB("%s: no prot match: %x\n", __func__, prot2);
- return access_type == MMU_INST_FETCH ? -3 : -2;
-}
-
-static int mmubooke206_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
- target_ulong address,
- MMUAccessType access_type,
- int mmu_idx)
-{
- ppcmas_tlb_t *tlb;
- hwaddr raddr;
- int i, j, ret;
-
- ret = -1;
- raddr = (hwaddr)-1ULL;
-
- for (i = 0; i < BOOKE206_MAX_TLBN; i++) {
- int ways = booke206_tlb_ways(env, i);
-
- for (j = 0; j < ways; j++) {
- tlb = booke206_get_tlbm(env, i, address, j);
- if (!tlb) {
- continue;
- }
- ret = mmubooke206_check_tlb(env, tlb, &raddr, &ctx->prot, address,
- access_type, mmu_idx);
- if (ret != -1) {
- goto found_tlb;
- }
- }
- }
-
-found_tlb:
-
- if (ret >= 0) {
- ctx->raddr = raddr;
- LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx
- " %d %d\n", __func__, address, ctx->raddr, ctx->prot,
- ret);
- } else {
- LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx
- " %d %d\n", __func__, address, raddr, ctx->prot, ret);
- }
-
- return ret;
-}
-
-static const char *book3e_tsize_to_str[32] = {
- "1K", "2K", "4K", "8K", "16K", "32K", "64K", "128K", "256K", "512K",
- "1M", "2M", "4M", "8M", "16M", "32M", "64M", "128M", "256M", "512M",
- "1G", "2G", "4G", "8G", "16G", "32G", "64G", "128G", "256G", "512G",
- "1T", "2T"
-};
-
-static void mmubooke_dump_mmu(CPUPPCState *env)
-{
- ppcemb_tlb_t *entry;
- int i;
-
- if (kvm_enabled() && !env->kvm_sw_tlb) {
- qemu_printf("Cannot access KVM TLB\n");
- return;
- }
-
- qemu_printf("\nTLB:\n");
- qemu_printf("Effective Physical Size PID Prot "
- "Attr\n");
-
- entry = &env->tlb.tlbe[0];
- for (i = 0; i < env->nb_tlb; i++, entry++) {
- hwaddr ea, pa;
- target_ulong mask;
- uint64_t size = (uint64_t)entry->size;
- char size_buf[20];
-
- /* Check valid flag */
- if (!(entry->prot & PAGE_VALID)) {
- continue;
- }
-
- mask = ~(entry->size - 1);
- ea = entry->EPN & mask;
- pa = entry->RPN & mask;
- /* Extend the physical address to 36 bits */
- pa |= (hwaddr)(entry->RPN & 0xF) << 32;
- if (size >= 1 * MiB) {
- snprintf(size_buf, sizeof(size_buf), "%3" PRId64 "M", size / MiB);
- } else {
- snprintf(size_buf, sizeof(size_buf), "%3" PRId64 "k", size / KiB);
- }
- qemu_printf("0x%016" PRIx64 " 0x%016" PRIx64 " %s %-5u %08x %08x\n",
- (uint64_t)ea, (uint64_t)pa, size_buf, (uint32_t)entry->PID,
- entry->prot, entry->attr);
- }
-
-}
-
-static void mmubooke206_dump_one_tlb(CPUPPCState *env, int tlbn, int offset,
- int tlbsize)
-{
- ppcmas_tlb_t *entry;
- int i;
-
- qemu_printf("\nTLB%d:\n", tlbn);
- qemu_printf("Effective Physical Size TID TS SRWX"
- " URWX WIMGE U0123\n");
-
- entry = &env->tlb.tlbm[offset];
- for (i = 0; i < tlbsize; i++, entry++) {
- hwaddr ea, pa, size;
- int tsize;
-
- if (!(entry->mas1 & MAS1_VALID)) {
- continue;
- }
-
- tsize = (entry->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT;
- size = 1024ULL << tsize;
- ea = entry->mas2 & ~(size - 1);
- pa = entry->mas7_3 & ~(size - 1);
-
- qemu_printf("0x%016" PRIx64 " 0x%016" PRIx64 " %4s %-5u %1u S%c%c%c"
- "U%c%c%c %c%c%c%c%c U%c%c%c%c\n",
- (uint64_t)ea, (uint64_t)pa,
- book3e_tsize_to_str[tsize],
- (entry->mas1 & MAS1_TID_MASK) >> MAS1_TID_SHIFT,
- (entry->mas1 & MAS1_TS) >> MAS1_TS_SHIFT,
- entry->mas7_3 & MAS3_SR ? 'R' : '-',
- entry->mas7_3 & MAS3_SW ? 'W' : '-',
- entry->mas7_3 & MAS3_SX ? 'X' : '-',
- entry->mas7_3 & MAS3_UR ? 'R' : '-',
- entry->mas7_3 & MAS3_UW ? 'W' : '-',
- entry->mas7_3 & MAS3_UX ? 'X' : '-',
- entry->mas2 & MAS2_W ? 'W' : '-',
- entry->mas2 & MAS2_I ? 'I' : '-',
- entry->mas2 & MAS2_M ? 'M' : '-',
- entry->mas2 & MAS2_G ? 'G' : '-',
- entry->mas2 & MAS2_E ? 'E' : '-',
- entry->mas7_3 & MAS3_U0 ? '0' : '-',
- entry->mas7_3 & MAS3_U1 ? '1' : '-',
- entry->mas7_3 & MAS3_U2 ? '2' : '-',
- entry->mas7_3 & MAS3_U3 ? '3' : '-');
- }
-}
-
-static void mmubooke206_dump_mmu(CPUPPCState *env)
-{
- int offset = 0;
- int i;
-
- if (kvm_enabled() && !env->kvm_sw_tlb) {
- qemu_printf("Cannot access KVM TLB\n");
- return;
- }
+/* #define DEBUG_BATS */
+/* #define DEBUG_SOFTWARE_TLB */
+/* #define DUMP_PAGE_TABLES */
+/* #define FLUSH_ALL_TLBS */
- for (i = 0; i < BOOKE206_MAX_TLBN; i++) {
- int size = booke206_tlb_size(env, i);
+#ifdef DEBUG_SOFTWARE_TLB
+# define LOG_SWTLB(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__)
+#else
+# define LOG_SWTLB(...) do { } while (0)
+#endif
- if (size == 0) {
- continue;
- }
+#ifdef DEBUG_BATS
+# define LOG_BATS(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__)
+#else
+# define LOG_BATS(...) do { } while (0)
+#endif
- mmubooke206_dump_one_tlb(env, i, offset, size);
- offset += size;
- }
-}
+/*****************************************************************************/
+/* PowerPC MMU emulation */
-static void mmu6xx_dump_BATs(CPUPPCState *env, int type)
+/* Software driven TLB helpers */
+static inline void ppc6xx_tlb_invalidate_all(CPUPPCState *env)
{
- target_ulong *BATlt, *BATut, *BATu, *BATl;
- target_ulong BEPIl, BEPIu, bl;
- int i;
+ ppc6xx_tlb_t *tlb;
+ int nr, max;
- switch (type) {
- case ACCESS_CODE:
- BATlt = env->IBAT[1];
- BATut = env->IBAT[0];
- break;
- default:
- BATlt = env->DBAT[1];
- BATut = env->DBAT[0];
- break;
+ /* LOG_SWTLB("Invalidate all TLBs\n"); */
+ /* Invalidate all defined software TLB */
+ max = env->nb_tlb;
+ if (env->id_tlbs == 1) {
+ max *= 2;
}
-
- for (i = 0; i < env->nb_BATs; i++) {
- BATu = &BATut[i];
- BATl = &BATlt[i];
- BEPIu = *BATu & 0xF0000000;
- BEPIl = *BATu & 0x0FFE0000;
- bl = (*BATu & 0x00001FFC) << 15;
- qemu_printf("%s BAT%d BATu " TARGET_FMT_lx
- " BATl " TARGET_FMT_lx "\n\t" TARGET_FMT_lx " "
- TARGET_FMT_lx " " TARGET_FMT_lx "\n",
- type == ACCESS_CODE ? "code" : "data", i,
- *BATu, *BATl, BEPIu, BEPIl, bl);
+ for (nr = 0; nr < max; nr++) {
+ tlb = &env->tlb.tlb6[nr];
+ pte_invalidate(&tlb->pte0);
}
+ tlb_flush(env_cpu(env));
}
-static void mmu6xx_dump_mmu(CPUPPCState *env)
+static inline void ppc6xx_tlb_invalidate_virt2(CPUPPCState *env,
+ target_ulong eaddr,
+ int is_code, int match_epn)
{
- PowerPCCPU *cpu = env_archcpu(env);
+#if !defined(FLUSH_ALL_TLBS)
+ CPUState *cs = env_cpu(env);
ppc6xx_tlb_t *tlb;
- target_ulong sr;
- int type, way, entry, i;
-
- qemu_printf("HTAB base = 0x%"HWADDR_PRIx"\n", ppc_hash32_hpt_base(cpu));
- qemu_printf("HTAB mask = 0x%"HWADDR_PRIx"\n", ppc_hash32_hpt_mask(cpu));
-
- qemu_printf("\nSegment registers:\n");
- for (i = 0; i < 32; i++) {
- sr = env->sr[i];
- if (sr & 0x80000000) {
- qemu_printf("%02d T=%d Ks=%d Kp=%d BUID=0x%03x "
- "CNTLR_SPEC=0x%05x\n", i,
- sr & 0x80000000 ? 1 : 0, sr & 0x40000000 ? 1 : 0,
- sr & 0x20000000 ? 1 : 0, (uint32_t)((sr >> 20) &
0x1FF),
- (uint32_t)(sr & 0xFFFFF));
- } else {
- qemu_printf("%02d T=%d Ks=%d Kp=%d N=%d VSID=0x%06x\n", i,
- sr & 0x80000000 ? 1 : 0, sr & 0x40000000 ? 1 : 0,
- sr & 0x20000000 ? 1 : 0, sr & 0x10000000 ? 1 : 0,
- (uint32_t)(sr & 0x00FFFFFF));
- }
- }
-
- qemu_printf("\nBATs:\n");
- mmu6xx_dump_BATs(env, ACCESS_INT);
- mmu6xx_dump_BATs(env, ACCESS_CODE);
-
- if (env->id_tlbs != 1) {
- qemu_printf("ERROR: 6xx MMU should have separated TLB"
- " for code and data\n");
- }
+ int way, nr;
- qemu_printf("\nTLBs [EPN EPN + SIZE]\n");
-
- for (type = 0; type < 2; type++) {
- for (way = 0; way < env->nb_ways; way++) {
- for (entry = env->nb_tlb * type + env->tlb_per_way * way;
- entry < (env->nb_tlb * type + env->tlb_per_way * (way + 1));
- entry++) {
-
- tlb = &env->tlb.tlb6[entry];
- qemu_printf("%s TLB %02d/%02d way:%d %s ["
- TARGET_FMT_lx " " TARGET_FMT_lx "]\n",
- type ? "code" : "data", entry % env->nb_tlb,
- env->nb_tlb, way,
- pte_is_valid(tlb->pte0) ? "valid" : "inval",
- tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE);
- }
+ /* Invalidate ITLB + DTLB, all ways */
+ for (way = 0; way < env->nb_ways; way++) {
+ nr = ppc6xx_tlb_getnum(env, eaddr, way, is_code);
+ tlb = &env->tlb.tlb6[nr];
+ if (pte_is_valid(tlb->pte0) && (match_epn == 0 || eaddr == tlb->EPN)) {
+ LOG_SWTLB("TLB invalidate %d/%d " TARGET_FMT_lx "\n", nr,
+ env->nb_tlb, eaddr);
+ pte_invalidate(&tlb->pte0);
+ tlb_flush_page(cs, tlb->EPN);
}
}
-}
-
-void dump_mmu(CPUPPCState *env)
-{
- switch (env->mmu_model) {
- case POWERPC_MMU_BOOKE:
- mmubooke_dump_mmu(env);
- break;
- case POWERPC_MMU_BOOKE206:
- mmubooke206_dump_mmu(env);
- break;
- case POWERPC_MMU_SOFT_6xx:
- case POWERPC_MMU_SOFT_74xx:
- mmu6xx_dump_mmu(env);
- break;
-#if defined(TARGET_PPC64)
- case POWERPC_MMU_64B:
- case POWERPC_MMU_2_03:
- case POWERPC_MMU_2_06:
- case POWERPC_MMU_2_07:
- dump_slb(env_archcpu(env));
- break;
- case POWERPC_MMU_3_00:
- if (ppc64_v3_radix(env_archcpu(env))) {
- qemu_log_mask(LOG_UNIMP, "%s: the PPC64 MMU is unsupported\n",
- __func__);
- } else {
- dump_slb(env_archcpu(env));
- }
- break;
+#else
+ /* XXX: PowerPC specification say this is valid as well */
+ ppc6xx_tlb_invalidate_all(env);
#endif
- default:
- qemu_log_mask(LOG_UNIMP, "%s: unimplemented\n", __func__);
- }
}
-static int check_physical(CPUPPCState *env, mmu_ctx_t *ctx, target_ulong eaddr,
- MMUAccessType access_type)
+static inline void ppc6xx_tlb_invalidate_virt(CPUPPCState *env,
+ target_ulong eaddr, int is_code)
{
- int in_plb, ret;
-
- ctx->raddr = eaddr;
- ctx->prot = PAGE_READ | PAGE_EXEC;
- ret = 0;
- switch (env->mmu_model) {
- case POWERPC_MMU_SOFT_6xx:
- case POWERPC_MMU_SOFT_74xx:
- case POWERPC_MMU_SOFT_4xx:
- case POWERPC_MMU_REAL:
- case POWERPC_MMU_BOOKE:
- ctx->prot |= PAGE_WRITE;
- break;
-
- case POWERPC_MMU_SOFT_4xx_Z:
- if (unlikely(msr_pe != 0)) {
- /*
- * 403 family add some particular protections, using
- * PBL/PBU registers for accesses with no translation.
- */
- in_plb =
- /* Check PLB validity */
- (env->pb[0] < env->pb[1] &&
- /* and address in plb area */
- eaddr >= env->pb[0] && eaddr < env->pb[1]) ||
- (env->pb[2] < env->pb[3] &&
- eaddr >= env->pb[2] && eaddr < env->pb[3]) ? 1 : 0;
- if (in_plb ^ msr_px) {
- /* Access in protected area */
- if (access_type == MMU_DATA_STORE) {
- /* Access is not allowed */
- ret = -2;
- }
- } else {
- /* Read-write access is allowed */
- ctx->prot |= PAGE_WRITE;
- }
- }
- break;
-
- default:
- /* Caller's checks mean we should never get here for other models */
- abort();
- return -1;
- }
-
- return ret;
+ ppc6xx_tlb_invalidate_virt2(env, eaddr, is_code, 0);
}
-static int get_physical_address_wtlb(CPUPPCState *env, mmu_ctx_t *ctx,
- target_ulong eaddr,
- MMUAccessType access_type, int type,
- int mmu_idx)
+static void ppc6xx_tlb_store(CPUPPCState *env, target_ulong EPN, int way,
+ int is_code, target_ulong pte0, target_ulong pte1)
{
- int ret = -1;
- bool real_mode = (type == ACCESS_CODE && msr_ir == 0)
- || (type != ACCESS_CODE && msr_dr == 0);
-
- switch (env->mmu_model) {
- case POWERPC_MMU_SOFT_6xx:
- case POWERPC_MMU_SOFT_74xx:
- if (real_mode) {
- ret = check_physical(env, ctx, eaddr, access_type);
- } else {
- /* Try to find a BAT */
- if (env->nb_BATs != 0) {
- ret = get_bat_6xx_tlb(env, ctx, eaddr, access_type);
- }
- if (ret < 0) {
- /* We didn't match any BAT entry or don't have BATs */
- ret = get_segment_6xx_tlb(env, ctx, eaddr, access_type, type);
- }
- }
- break;
-
- case POWERPC_MMU_SOFT_4xx:
- case POWERPC_MMU_SOFT_4xx_Z:
- if (real_mode) {
- ret = check_physical(env, ctx, eaddr, access_type);
- } else {
- ret = mmu40x_get_physical_address(env, ctx, eaddr, access_type);
- }
- break;
- case POWERPC_MMU_BOOKE:
- ret = mmubooke_get_physical_address(env, ctx, eaddr, access_type);
- break;
- case POWERPC_MMU_BOOKE206:
- ret = mmubooke206_get_physical_address(env, ctx, eaddr, access_type,
- mmu_idx);
- break;
- case POWERPC_MMU_MPC8xx:
- /* XXX: TODO */
- cpu_abort(env_cpu(env), "MPC8xx MMU model is not implemented\n");
- break;
- case POWERPC_MMU_REAL:
- if (real_mode) {
- ret = check_physical(env, ctx, eaddr, access_type);
- } else {
- cpu_abort(env_cpu(env),
- "PowerPC in real mode do not do any translation\n");
- }
- return -1;
- default:
- cpu_abort(env_cpu(env), "Unknown or invalid MMU model\n");
- return -1;
- }
-
- return ret;
-}
+ ppc6xx_tlb_t *tlb;
+ int nr;
-#ifdef CONFIG_TCG
-static int get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
- target_ulong eaddr, MMUAccessType access_type,
- int type)
-{
- return get_physical_address_wtlb(env, ctx, eaddr, access_type, type, 0);
+ nr = ppc6xx_tlb_getnum(env, EPN, way, is_code);
+ tlb = &env->tlb.tlb6[nr];
+ LOG_SWTLB("Set TLB %d/%d EPN " TARGET_FMT_lx " PTE0 " TARGET_FMT_lx
+ " PTE1 " TARGET_FMT_lx "\n", nr, env->nb_tlb, EPN, pte0, pte1);
+ /* Invalidate any pending reference in QEMU for this virtual address */
+ ppc6xx_tlb_invalidate_virt2(env, EPN, is_code, 1);
+ tlb->pte0 = pte0;
+ tlb->pte1 = pte1;
+ tlb->EPN = EPN;
+ /* Store last way for LRU mechanism */
+ env->last_way = way;
}
-#endif
-hwaddr ppc_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
+/* Generic TLB search function for PowerPC embedded implementations */
+static int ppcemb_tlb_search(CPUPPCState *env, target_ulong address,
+ uint32_t pid)
{
- PowerPCCPU *cpu = POWERPC_CPU(cs);
- CPUPPCState *env = &cpu->env;
- mmu_ctx_t ctx;
-
- switch (env->mmu_model) {
-#if defined(TARGET_PPC64)
- case POWERPC_MMU_64B:
- case POWERPC_MMU_2_03:
- case POWERPC_MMU_2_06:
- case POWERPC_MMU_2_07:
- return ppc_hash64_get_phys_page_debug(cpu, addr);
- case POWERPC_MMU_3_00:
- return ppc64_v3_get_phys_page_debug(cpu, addr);
-#endif
-
- case POWERPC_MMU_32B:
- case POWERPC_MMU_601:
- return ppc_hash32_get_phys_page_debug(cpu, addr);
-
- default:
- ;
- }
-
- if (unlikely(get_physical_address(env, &ctx, addr, MMU_DATA_LOAD,
- ACCESS_INT) != 0)) {
+ ppcemb_tlb_t *tlb;
+ hwaddr raddr;
+ int i, ret;
- /*
- * Some MMUs have separate TLBs for code and data. If we only
- * try an ACCESS_INT, we may not be able to read instructions
- * mapped by code TLBs, so we also try a ACCESS_CODE.
- */
- if (unlikely(get_physical_address(env, &ctx, addr, MMU_INST_FETCH,
- ACCESS_CODE) != 0)) {
- return -1;
+ /* Default return value is no match */
+ ret = -1;
+ for (i = 0; i < env->nb_tlb; i++) {
+ tlb = &env->tlb.tlbe[i];
+ if (ppcemb_tlb_check(env, tlb, &raddr, address, pid, 0, i) == 0) {
+ ret = i;
+ break;
}
}
- return ctx.raddr & TARGET_PAGE_MASK;
+ return ret;
}
-static void booke206_update_mas_tlb_miss(CPUPPCState *env, target_ulong
address,
- MMUAccessType access_type, int
mmu_idx)
+/* Helpers specific to PowerPC 40x implementations */
+static inline void ppc4xx_tlb_invalidate_all(CPUPPCState *env)
{
- uint32_t epid;
- bool as, pr;
- uint32_t missed_tid = 0;
- bool use_epid = mmubooke206_get_as(env, mmu_idx, &epid, &as, &pr);
-
- if (access_type == MMU_INST_FETCH) {
- as = msr_ir;
- }
- env->spr[SPR_BOOKE_MAS0] = env->spr[SPR_BOOKE_MAS4] & MAS4_TLBSELD_MASK;
- env->spr[SPR_BOOKE_MAS1] = env->spr[SPR_BOOKE_MAS4] & MAS4_TSIZED_MASK;
- env->spr[SPR_BOOKE_MAS2] = env->spr[SPR_BOOKE_MAS4] & MAS4_WIMGED_MASK;
- env->spr[SPR_BOOKE_MAS3] = 0;
- env->spr[SPR_BOOKE_MAS6] = 0;
- env->spr[SPR_BOOKE_MAS7] = 0;
-
- /* AS */
- if (as) {
- env->spr[SPR_BOOKE_MAS1] |= MAS1_TS;
- env->spr[SPR_BOOKE_MAS6] |= MAS6_SAS;
- }
-
- env->spr[SPR_BOOKE_MAS1] |= MAS1_VALID;
- env->spr[SPR_BOOKE_MAS2] |= address & MAS2_EPN_MASK;
+ ppcemb_tlb_t *tlb;
+ int i;
- if (!use_epid) {
- switch (env->spr[SPR_BOOKE_MAS4] & MAS4_TIDSELD_PIDZ) {
- case MAS4_TIDSELD_PID0:
- missed_tid = env->spr[SPR_BOOKE_PID];
- break;
- case MAS4_TIDSELD_PID1:
- missed_tid = env->spr[SPR_BOOKE_PID1];
- break;
- case MAS4_TIDSELD_PID2:
- missed_tid = env->spr[SPR_BOOKE_PID2];
- break;
- }
- env->spr[SPR_BOOKE_MAS6] |= env->spr[SPR_BOOKE_PID] << 16;
- } else {
- missed_tid = epid;
- env->spr[SPR_BOOKE_MAS6] |= missed_tid << 16;
+ for (i = 0; i < env->nb_tlb; i++) {
+ tlb = &env->tlb.tlbe[i];
+ tlb->prot &= ~PAGE_VALID;
}
- env->spr[SPR_BOOKE_MAS1] |= (missed_tid << MAS1_TID_SHIFT);
-
-
- /* next victim logic */
- env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_ESEL_SHIFT;
- env->last_way++;
- env->last_way &= booke206_tlb_ways(env, 0) - 1;
- env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_NV_SHIFT;
+ tlb_flush(env_cpu(env));
}
-/* Perform address translation */
-static int cpu_ppc_handle_mmu_fault(CPUPPCState *env, target_ulong address,
- MMUAccessType access_type, int mmu_idx)
+static void booke206_flush_tlb(CPUPPCState *env, int flags,
+ const int check_iprot)
{
- CPUState *cs = env_cpu(env);
- PowerPCCPU *cpu = POWERPC_CPU(cs);
- mmu_ctx_t ctx;
- int type;
- int ret = 0;
+ int tlb_size;
+ int i, j;
+ ppcmas_tlb_t *tlb = env->tlb.tlbm;
- if (access_type == MMU_INST_FETCH) {
- /* code access */
- type = ACCESS_CODE;
- } else {
- /* data access */
- type = env->access_type;
- }
- ret = get_physical_address_wtlb(env, &ctx, address, access_type,
- type, mmu_idx);
- if (ret == 0) {
- tlb_set_page(cs, address & TARGET_PAGE_MASK,
- ctx.raddr & TARGET_PAGE_MASK, ctx.prot,
- mmu_idx, TARGET_PAGE_SIZE);
- ret = 0;
- } else if (ret < 0) {
- LOG_MMU_STATE(cs);
- if (type == ACCESS_CODE) {
- switch (ret) {
- case -1:
- /* No matches in page tables or TLB */
- switch (env->mmu_model) {
- case POWERPC_MMU_SOFT_6xx:
- cs->exception_index = POWERPC_EXCP_IFTLB;
- env->error_code = 1 << 18;
- env->spr[SPR_IMISS] = address;
- env->spr[SPR_ICMP] = 0x80000000 | ctx.ptem;
- goto tlb_miss;
- case POWERPC_MMU_SOFT_74xx:
- cs->exception_index = POWERPC_EXCP_IFTLB;
- goto tlb_miss_74xx;
- case POWERPC_MMU_SOFT_4xx:
- case POWERPC_MMU_SOFT_4xx_Z:
- cs->exception_index = POWERPC_EXCP_ITLB;
- env->error_code = 0;
- env->spr[SPR_40x_DEAR] = address;
- env->spr[SPR_40x_ESR] = 0x00000000;
- break;
- case POWERPC_MMU_BOOKE206:
- booke206_update_mas_tlb_miss(env, address, 2, mmu_idx);
- /* fall through */
- case POWERPC_MMU_BOOKE:
- cs->exception_index = POWERPC_EXCP_ITLB;
- env->error_code = 0;
- env->spr[SPR_BOOKE_DEAR] = address;
- env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx,
MMU_DATA_LOAD);
- return -1;
- case POWERPC_MMU_MPC8xx:
- /* XXX: TODO */
- cpu_abort(cs, "MPC8xx MMU model is not implemented\n");
- break;
- case POWERPC_MMU_REAL:
- cpu_abort(cs, "PowerPC in real mode should never raise "
- "any MMU exceptions\n");
- return -1;
- default:
- cpu_abort(cs, "Unknown or invalid MMU model\n");
- return -1;
- }
- break;
- case -2:
- /* Access rights violation */
- cs->exception_index = POWERPC_EXCP_ISI;
- env->error_code = 0x08000000;
- break;
- case -3:
- /* No execute protection violation */
- if ((env->mmu_model == POWERPC_MMU_BOOKE) ||
- (env->mmu_model == POWERPC_MMU_BOOKE206)) {
- env->spr[SPR_BOOKE_ESR] = 0x00000000;
- }
- cs->exception_index = POWERPC_EXCP_ISI;
- env->error_code = 0x10000000;
- break;
- case -4:
- /* Direct store exception */
- /* No code fetch is allowed in direct-store areas */
- cs->exception_index = POWERPC_EXCP_ISI;
- env->error_code = 0x10000000;
- break;
- }
- } else {
- switch (ret) {
- case -1:
- /* No matches in page tables or TLB */
- switch (env->mmu_model) {
- case POWERPC_MMU_SOFT_6xx:
- if (access_type == MMU_DATA_STORE) {
- cs->exception_index = POWERPC_EXCP_DSTLB;
- env->error_code = 1 << 16;
- } else {
- cs->exception_index = POWERPC_EXCP_DLTLB;
- env->error_code = 0;
- }
- env->spr[SPR_DMISS] = address;
- env->spr[SPR_DCMP] = 0x80000000 | ctx.ptem;
- tlb_miss:
- env->error_code |= ctx.key << 19;
- env->spr[SPR_HASH1] = ppc_hash32_hpt_base(cpu) +
- get_pteg_offset32(cpu, ctx.hash[0]);
- env->spr[SPR_HASH2] = ppc_hash32_hpt_base(cpu) +
- get_pteg_offset32(cpu, ctx.hash[1]);
- break;
- case POWERPC_MMU_SOFT_74xx:
- if (access_type == MMU_DATA_STORE) {
- cs->exception_index = POWERPC_EXCP_DSTLB;
- } else {
- cs->exception_index = POWERPC_EXCP_DLTLB;
- }
- tlb_miss_74xx:
- /* Implement LRU algorithm */
- env->error_code = ctx.key << 19;
- env->spr[SPR_TLBMISS] = (address & ~((target_ulong)0x3)) |
- ((env->last_way + 1) & (env->nb_ways - 1));
- env->spr[SPR_PTEHI] = 0x80000000 | ctx.ptem;
- break;
- case POWERPC_MMU_SOFT_4xx:
- case POWERPC_MMU_SOFT_4xx_Z:
- cs->exception_index = POWERPC_EXCP_DTLB;
- env->error_code = 0;
- env->spr[SPR_40x_DEAR] = address;
- if (access_type == MMU_DATA_STORE) {
- env->spr[SPR_40x_ESR] = 0x00800000;
- } else {
- env->spr[SPR_40x_ESR] = 0x00000000;
- }
- break;
- case POWERPC_MMU_MPC8xx:
- /* XXX: TODO */
- cpu_abort(cs, "MPC8xx MMU model is not implemented\n");
- break;
- case POWERPC_MMU_BOOKE206:
- booke206_update_mas_tlb_miss(env, address, access_type,
mmu_idx);
- /* fall through */
- case POWERPC_MMU_BOOKE:
- cs->exception_index = POWERPC_EXCP_DTLB;
- env->error_code = 0;
- env->spr[SPR_BOOKE_DEAR] = address;
- env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx,
access_type);
- return -1;
- case POWERPC_MMU_REAL:
- cpu_abort(cs, "PowerPC in real mode should never raise "
- "any MMU exceptions\n");
- return -1;
- default:
- cpu_abort(cs, "Unknown or invalid MMU model\n");
- return -1;
- }
- break;
- case -2:
- /* Access rights violation */
- cs->exception_index = POWERPC_EXCP_DSI;
- env->error_code = 0;
- if (env->mmu_model == POWERPC_MMU_SOFT_4xx
- || env->mmu_model == POWERPC_MMU_SOFT_4xx_Z) {
- env->spr[SPR_40x_DEAR] = address;
- if (access_type == MMU_DATA_STORE) {
- env->spr[SPR_40x_ESR] |= 0x00800000;
- }
- } else if ((env->mmu_model == POWERPC_MMU_BOOKE) ||
- (env->mmu_model == POWERPC_MMU_BOOKE206)) {
- env->spr[SPR_BOOKE_DEAR] = address;
- env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx,
access_type);
- } else {
- env->spr[SPR_DAR] = address;
- if (access_type == MMU_DATA_STORE) {
- env->spr[SPR_DSISR] = 0x0A000000;
- } else {
- env->spr[SPR_DSISR] = 0x08000000;
- }
- }
- break;
- case -4:
- /* Direct store exception */
- switch (type) {
- case ACCESS_FLOAT:
- /* Floating point load/store */
- cs->exception_index = POWERPC_EXCP_ALIGN;
- env->error_code = POWERPC_EXCP_ALIGN_FP;
- env->spr[SPR_DAR] = address;
- break;
- case ACCESS_RES:
- /* lwarx, ldarx or stwcx. */
- cs->exception_index = POWERPC_EXCP_DSI;
- env->error_code = 0;
- env->spr[SPR_DAR] = address;
- if (access_type == MMU_DATA_STORE) {
- env->spr[SPR_DSISR] = 0x06000000;
- } else {
- env->spr[SPR_DSISR] = 0x04000000;
- }
- break;
- case ACCESS_EXT:
- /* eciwx or ecowx */
- cs->exception_index = POWERPC_EXCP_DSI;
- env->error_code = 0;
- env->spr[SPR_DAR] = address;
- if (access_type == MMU_DATA_STORE) {
- env->spr[SPR_DSISR] = 0x06100000;
- } else {
- env->spr[SPR_DSISR] = 0x04100000;
- }
- break;
- default:
- printf("DSI: invalid exception (%d)\n", ret);
- cs->exception_index = POWERPC_EXCP_PROGRAM;
- env->error_code =
- POWERPC_EXCP_INVAL | POWERPC_EXCP_INVAL_INVAL;
- env->spr[SPR_DAR] = address;
- break;
+ for (i = 0; i < BOOKE206_MAX_TLBN; i++) {
+ if (flags & (1 << i)) {
+ tlb_size = booke206_tlb_size(env, i);
+ for (j = 0; j < tlb_size; j++) {
+ if (!check_iprot || !(tlb[j].mas1 & MAS1_IPROT)) {
+ tlb[j].mas1 &= ~MAS1_VALID;
}
- break;
}
}
- ret = 1;
+ tlb += booke206_tlb_size(env, i);
}
- return ret;
+ tlb_flush(env_cpu(env));
}
-#ifdef CONFIG_TCG
+
/*****************************************************************************/
/* BATs management */
#if !defined(FLUSH_ALL_TLBS)
@@ -1952,13 +372,11 @@ void helper_store_601_batl(CPUPPCState *env, uint32_t
nr, target_ulong value)
#endif
}
}
-#endif
/*****************************************************************************/
/* TLB management */
void ppc_tlb_invalidate_all(CPUPPCState *env)
{
-#ifdef CONFIG_TCG
#if defined(TARGET_PPC64)
if (mmu_is_64bit(env->mmu_model)) {
env->tlb_need_flush = 0;
@@ -1997,10 +415,8 @@ void ppc_tlb_invalidate_all(CPUPPCState *env)
cpu_abort(env_cpu(env), "Unknown MMU model %x\n", env->mmu_model);
break;
}
-#endif
}
-#ifdef CONFIG_TCG
void ppc_tlb_invalidate_one(CPUPPCState *env, target_ulong addr)
{
#if !defined(FLUSH_ALL_TLBS)
@@ -2942,30 +1358,6 @@ void helper_check_tlb_flush_global(CPUPPCState *env)
{
check_tlb_flush(env, true);
}
-#endif /* CONFIG_TCG */
/*****************************************************************************/
-bool ppc_cpu_tlb_fill(CPUState *cs, vaddr addr, int size,
- MMUAccessType access_type, int mmu_idx,
- bool probe, uintptr_t retaddr)
-{
- PowerPCCPU *cpu = POWERPC_CPU(cs);
- PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cs);
- CPUPPCState *env = &cpu->env;
- int ret;
-
- if (pcc->handle_mmu_fault) {
- ret = pcc->handle_mmu_fault(cpu, addr, access_type, mmu_idx);
- } else {
- ret = cpu_ppc_handle_mmu_fault(env, addr, access_type, mmu_idx);
- }
- if (unlikely(ret != 0)) {
- if (probe) {
- return false;
- }
- raise_exception_err_ra(env, cs->exception_index, env->error_code,
- retaddr);
- }
- return true;
-}
--
2.17.1
