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[PATCH-for-9.1 18/21] target/xtensa: Extract MMU API to new mmu.c/mmu.h
|
From: |
Philippe Mathieu-Daudé |
|
Subject: |
[PATCH-for-9.1 18/21] target/xtensa: Extract MMU API to new mmu.c/mmu.h files |
|
Date: |
Thu, 21 Mar 2024 16:48:34 +0100 |
Extract the MMU API and expose it via "mmu.h" so we can
reuse the methods in target/xtensa/ files.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
target/xtensa/cpu.h | 32 +-
target/xtensa/mmu.h | 95 ++++
target/xtensa/mmu.c | 889 ++++++++++++++++++++++++++++++++++++
target/xtensa/mmu_helper.c | 892 +------------------------------------
target/xtensa/meson.build | 1 +
5 files changed, 991 insertions(+), 918 deletions(-)
create mode 100644 target/xtensa/mmu.h
create mode 100644 target/xtensa/mmu.c
diff --git a/target/xtensa/cpu.h b/target/xtensa/cpu.h
index b2cfc78e9d..b67ee987f3 100644
--- a/target/xtensa/cpu.h
+++ b/target/xtensa/cpu.h
@@ -34,6 +34,10 @@
#include "hw/clock.h"
#include "xtensa-isa.h"
+typedef struct CPUArchState CPUXtensaState;
+
+#include "mmu.h"
+
/* Xtensa processors have a weak memory model */
#define TCG_GUEST_DEFAULT_MO (0)
@@ -309,28 +313,6 @@ typedef enum {
INTTYPE_MAX
} interrupt_type;
-typedef struct CPUArchState CPUXtensaState;
-
-typedef struct xtensa_tlb_entry {
- uint32_t vaddr;
- uint32_t paddr;
- uint8_t asid;
- uint8_t attr;
- bool variable;
-} xtensa_tlb_entry;
-
-typedef struct xtensa_tlb {
- unsigned nways;
- const unsigned way_size[10];
- bool varway56;
- unsigned nrefillentries;
-} xtensa_tlb;
-
-typedef struct xtensa_mpu_entry {
- uint32_t vaddr;
- uint32_t attr;
-} xtensa_mpu_entry;
-
typedef struct XtensaGdbReg {
int targno;
unsigned flags;
@@ -689,12 +671,6 @@ static inline int xtensa_get_cring(const CPUXtensaState
*env)
}
#ifndef CONFIG_USER_ONLY
-int xtensa_get_physical_addr(CPUXtensaState *env, bool update_tlb,
- uint32_t vaddr, int is_write, int mmu_idx,
- uint32_t *paddr, uint32_t *page_size, unsigned *access);
-void xtensa_reset_mmu(CPUXtensaState *env);
-void xtensa_dump_mmu(CPUXtensaState *env);
-
static inline MemoryRegion *xtensa_get_er_region(CPUXtensaState *env)
{
return env->system_er;
diff --git a/target/xtensa/mmu.h b/target/xtensa/mmu.h
new file mode 100644
index 0000000000..3e1d2c03ea
--- /dev/null
+++ b/target/xtensa/mmu.h
@@ -0,0 +1,95 @@
+/*
+ * Xtensa MMU/MPU helpers
+ *
+ * SPDX-FileCopyrightText: 2011 - 2019, Max Filippov, Open Source and Linux
Lab.
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef TARGET_XTENSA_MMU_H
+#define TARGET_XTENSA_MMU_H
+
+#include "cpu.h"
+
+typedef struct xtensa_tlb_entry {
+ uint32_t vaddr;
+ uint32_t paddr;
+ uint8_t asid;
+ uint8_t attr;
+ bool variable;
+} xtensa_tlb_entry;
+
+typedef struct xtensa_tlb {
+ unsigned nways;
+ const unsigned way_size[10];
+ bool varway56;
+ unsigned nrefillentries;
+} xtensa_tlb;
+
+typedef struct xtensa_mpu_entry {
+ uint32_t vaddr;
+ uint32_t attr;
+} xtensa_mpu_entry;
+
+#define XTENSA_MPU_SEGMENT_MASK 0x0000001f
+#define XTENSA_MPU_ACC_RIGHTS_MASK 0x00000f00
+#define XTENSA_MPU_ACC_RIGHTS_SHIFT 8
+#define XTENSA_MPU_MEM_TYPE_MASK 0x001ff000
+#define XTENSA_MPU_MEM_TYPE_SHIFT 12
+#define XTENSA_MPU_ATTR_MASK 0x001fff00
+
+#define XTENSA_MPU_PROBE_B 0x40000000
+#define XTENSA_MPU_PROBE_V 0x80000000
+
+#define XTENSA_MPU_SYSTEM_TYPE_DEVICE 0x0001
+#define XTENSA_MPU_SYSTEM_TYPE_NC 0x0002
+#define XTENSA_MPU_SYSTEM_TYPE_C 0x0003
+#define XTENSA_MPU_SYSTEM_TYPE_MASK 0x0003
+
+#define XTENSA_MPU_TYPE_SYS_C 0x0010
+#define XTENSA_MPU_TYPE_SYS_W 0x0020
+#define XTENSA_MPU_TYPE_SYS_R 0x0040
+#define XTENSA_MPU_TYPE_CPU_C 0x0100
+#define XTENSA_MPU_TYPE_CPU_W 0x0200
+#define XTENSA_MPU_TYPE_CPU_R 0x0400
+#define XTENSA_MPU_TYPE_CPU_CACHE 0x0800
+#define XTENSA_MPU_TYPE_B 0x1000
+#define XTENSA_MPU_TYPE_INT 0x2000
+
+unsigned mmu_attr_to_access(uint32_t attr);
+unsigned mpu_attr_to_access(uint32_t attr, unsigned ring);
+unsigned mpu_attr_to_cpu_cache(uint32_t attr);
+unsigned mpu_attr_to_type(uint32_t attr);
+
+unsigned region_attr_to_access(uint32_t attr);
+unsigned cacheattr_attr_to_access(uint32_t attr);
+
+xtensa_tlb_entry *xtensa_get_tlb_entry(CPUXtensaState *env,
+ uint32_t v, bool dtlb, uint32_t *pwi);
+xtensa_tlb_entry *xtensa_tlb_get_entry(CPUXtensaState *env, bool dtlb,
+ unsigned wi, unsigned ei);
+void xtensa_tlb_set_entry(CPUXtensaState *env, bool dtlb,
+ unsigned wi, unsigned ei,
+ uint32_t vpn, uint32_t pte);
+
+uint32_t xtensa_tlb_get_addr_mask(const CPUXtensaState *env, bool dtlb,
+ uint32_t way);
+uint32_t xtensa_get_vpn_mask(const CPUXtensaState *env, bool dtlb,
+ uint32_t way);
+
+bool xtensa_split_tlb_entry_spec(CPUXtensaState *env, uint32_t v, bool dtlb,
+ uint32_t *vpn, uint32_t *wi, uint32_t *ei);
+
+int xtensa_tlb_lookup(const CPUXtensaState *env, uint32_t addr, bool dtlb,
+ uint32_t *pwi, uint32_t *pei, uint8_t *pring);
+int xtensa_mpu_lookup(const xtensa_mpu_entry *entry, unsigned n,
+ uint32_t vaddr, unsigned *segment);
+
+int xtensa_get_physical_addr(CPUXtensaState *env, bool update_tlb,
+ uint32_t vaddr, int is_write, int mmu_idx,
+ uint32_t *paddr, uint32_t *page_size,
+ unsigned *access);
+
+void xtensa_reset_mmu(CPUXtensaState *env);
+void xtensa_dump_mmu(CPUXtensaState *env);
+
+#endif
diff --git a/target/xtensa/mmu.c b/target/xtensa/mmu.c
new file mode 100644
index 0000000000..4f17fb2980
--- /dev/null
+++ b/target/xtensa/mmu.c
@@ -0,0 +1,889 @@
+/*
+ * Copyright (c) 2011 - 2019, Max Filippov, Open Source and Linux Lab.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of the Open Source and Linux Lab nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/log.h"
+#include "qemu/host-utils.h"
+#include "exec/exec-all.h"
+#include "cpu.h"
+#include "mmu.h"
+
+static uint32_t get_page_size(const CPUXtensaState *env,
+ bool dtlb, uint32_t way)
+{
+ uint32_t tlbcfg = env->sregs[dtlb ? DTLBCFG : ITLBCFG];
+
+ switch (way) {
+ case 4:
+ return (tlbcfg >> 16) & 0x3;
+
+ case 5:
+ return (tlbcfg >> 20) & 0x1;
+
+ case 6:
+ return (tlbcfg >> 24) & 0x1;
+
+ default:
+ return 0;
+ }
+}
+
+/*!
+ * Get bit mask for the virtual address bits translated by the TLB way
+ */
+uint32_t xtensa_tlb_get_addr_mask(const CPUXtensaState *env,
+ bool dtlb, uint32_t way)
+{
+ if (xtensa_option_enabled(env->config, XTENSA_OPTION_MMU)) {
+ bool varway56 = dtlb ?
+ env->config->dtlb.varway56 :
+ env->config->itlb.varway56;
+
+ switch (way) {
+ case 4:
+ return 0xfff00000 << get_page_size(env, dtlb, way) * 2;
+
+ case 5:
+ if (varway56) {
+ return 0xf8000000 << get_page_size(env, dtlb, way);
+ } else {
+ return 0xf8000000;
+ }
+
+ case 6:
+ if (varway56) {
+ return 0xf0000000 << (1 - get_page_size(env, dtlb, way));
+ } else {
+ return 0xf0000000;
+ }
+
+ default:
+ return 0xfffff000;
+ }
+ } else {
+ return REGION_PAGE_MASK;
+ }
+}
+
+/*!
+ * Get bit mask for the 'VPN without index' field.
+ * See ISA, 4.6.5.6, data format for RxTLB0
+ */
+uint32_t xtensa_get_vpn_mask(const CPUXtensaState *env, bool dtlb, uint32_t
way)
+{
+ if (way < 4) {
+ bool is32 = (dtlb ?
+ env->config->dtlb.nrefillentries :
+ env->config->itlb.nrefillentries) == 32;
+ return is32 ? 0xffff8000 : 0xffffc000;
+ } else if (way == 4) {
+ return xtensa_tlb_get_addr_mask(env, dtlb, way) << 2;
+ } else if (way <= 6) {
+ uint32_t mask = xtensa_tlb_get_addr_mask(env, dtlb, way);
+ bool varway56 = dtlb ?
+ env->config->dtlb.varway56 :
+ env->config->itlb.varway56;
+
+ if (varway56) {
+ return mask << (way == 5 ? 2 : 3);
+ } else {
+ return mask << 1;
+ }
+ } else {
+ return 0xfffff000;
+ }
+}
+
+/*!
+ * Split virtual address into VPN (with index) and entry index
+ * for the given TLB way
+ */
+static void xtensa_split_tlb_entry_spec_way(const CPUXtensaState *env,
+ uint32_t v,
+ bool dtlb, uint32_t *vpn,
+ uint32_t wi, uint32_t *ei)
+{
+ bool varway56 = dtlb ?
+ env->config->dtlb.varway56 :
+ env->config->itlb.varway56;
+
+ if (!dtlb) {
+ wi &= 7;
+ }
+
+ if (wi < 4) {
+ bool is32 = (dtlb ?
+ env->config->dtlb.nrefillentries :
+ env->config->itlb.nrefillentries) == 32;
+ *ei = (v >> 12) & (is32 ? 0x7 : 0x3);
+ } else {
+ switch (wi) {
+ case 4:
+ {
+ uint32_t eibase = 20 + get_page_size(env, dtlb, wi) * 2;
+ *ei = (v >> eibase) & 0x3;
+ }
+ break;
+
+ case 5:
+ if (varway56) {
+ uint32_t eibase = 27 + get_page_size(env, dtlb, wi);
+ *ei = (v >> eibase) & 0x3;
+ } else {
+ *ei = (v >> 27) & 0x1;
+ }
+ break;
+
+ case 6:
+ if (varway56) {
+ uint32_t eibase = 29 - get_page_size(env, dtlb, wi);
+ *ei = (v >> eibase) & 0x7;
+ } else {
+ *ei = (v >> 28) & 0x1;
+ }
+ break;
+
+ default:
+ *ei = 0;
+ break;
+ }
+ }
+ *vpn = v & xtensa_tlb_get_addr_mask(env, dtlb, wi);
+}
+
+/*!
+ * Split TLB address into TLB way, entry index and VPN (with index).
+ * See ISA, 4.6.5.5 - 4.6.5.8 for the TLB addressing format
+ */
+bool xtensa_split_tlb_entry_spec(CPUXtensaState *env, uint32_t v, bool dtlb,
+ uint32_t *vpn, uint32_t *wi, uint32_t *ei)
+{
+ if (xtensa_option_enabled(env->config, XTENSA_OPTION_MMU)) {
+ *wi = v & (dtlb ? 0xf : 0x7);
+ if (*wi < (dtlb ? env->config->dtlb.nways : env->config->itlb.nways)) {
+ xtensa_split_tlb_entry_spec_way(env, v, dtlb, vpn, *wi, ei);
+ return true;
+ } else {
+ return false;
+ }
+ } else {
+ *vpn = v & REGION_PAGE_MASK;
+ *wi = 0;
+ *ei = (v >> 29) & 0x7;
+ return true;
+ }
+}
+
+xtensa_tlb_entry *xtensa_tlb_get_entry(CPUXtensaState *env, bool dtlb,
+ unsigned wi, unsigned ei)
+{
+ const xtensa_tlb *tlb = dtlb ? &env->config->dtlb : &env->config->itlb;
+
+ assert(wi < tlb->nways && ei < tlb->way_size[wi]);
+ return dtlb ?
+ env->dtlb[wi] + ei :
+ env->itlb[wi] + ei;
+}
+
+xtensa_tlb_entry *xtensa_get_tlb_entry(CPUXtensaState *env, uint32_t v,
+ bool dtlb, uint32_t *pwi)
+{
+ uint32_t vpn;
+ uint32_t wi;
+ uint32_t ei;
+
+ if (xtensa_split_tlb_entry_spec(env, v, dtlb, &vpn, &wi, &ei)) {
+ if (pwi) {
+ *pwi = wi;
+ }
+ return xtensa_tlb_get_entry(env, dtlb, wi, ei);
+ } else {
+ return NULL;
+ }
+}
+
+static void xtensa_tlb_set_entry_mmu(const CPUXtensaState *env,
+ xtensa_tlb_entry *entry, bool dtlb,
+ unsigned wi, unsigned ei, uint32_t vpn,
+ uint32_t pte)
+{
+ entry->vaddr = vpn;
+ entry->paddr = pte & xtensa_tlb_get_addr_mask(env, dtlb, wi);
+ entry->asid = (env->sregs[RASID] >> ((pte >> 1) & 0x18)) & 0xff;
+ entry->attr = pte & 0xf;
+}
+
+void xtensa_tlb_set_entry(CPUXtensaState *env, bool dtlb,
+ unsigned wi, unsigned ei,
+ uint32_t vpn, uint32_t pte)
+{
+ CPUState *cs = env_cpu(env);
+ xtensa_tlb_entry *entry = xtensa_tlb_get_entry(env, dtlb, wi, ei);
+
+ if (xtensa_option_enabled(env->config, XTENSA_OPTION_MMU)) {
+ if (entry->variable) {
+ if (entry->asid) {
+ tlb_flush_page(cs, entry->vaddr);
+ }
+ xtensa_tlb_set_entry_mmu(env, entry, dtlb, wi, ei, vpn, pte);
+ tlb_flush_page(cs, entry->vaddr);
+ } else {
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s %d, %d, %d trying to set immutable entry\n",
+ __func__, dtlb, wi, ei);
+ }
+ } else {
+ tlb_flush_page(cs, entry->vaddr);
+ if (xtensa_option_enabled(env->config,
+ XTENSA_OPTION_REGION_TRANSLATION)) {
+ entry->paddr = pte & REGION_PAGE_MASK;
+ }
+ entry->attr = pte & 0xf;
+ }
+}
+
+hwaddr xtensa_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
+{
+ XtensaCPU *cpu = XTENSA_CPU(cs);
+ uint32_t paddr;
+ uint32_t page_size;
+ unsigned access;
+
+ if (xtensa_get_physical_addr(&cpu->env, false, addr, 0, 0,
+ &paddr, &page_size, &access) == 0) {
+ return paddr;
+ }
+ if (xtensa_get_physical_addr(&cpu->env, false, addr, 2, 0,
+ &paddr, &page_size, &access) == 0) {
+ return paddr;
+ }
+ return ~0;
+}
+
+static void reset_tlb_mmu_all_ways(CPUXtensaState *env, const xtensa_tlb *tlb,
+ xtensa_tlb_entry entry[][MAX_TLB_WAY_SIZE])
+{
+ unsigned wi, ei;
+
+ for (wi = 0; wi < tlb->nways; ++wi) {
+ for (ei = 0; ei < tlb->way_size[wi]; ++ei) {
+ entry[wi][ei].asid = 0;
+ entry[wi][ei].variable = true;
+ }
+ }
+}
+
+static void reset_tlb_mmu_ways56(CPUXtensaState *env, const xtensa_tlb *tlb,
+ xtensa_tlb_entry entry[][MAX_TLB_WAY_SIZE])
+{
+ if (!tlb->varway56) {
+ static const xtensa_tlb_entry way5[] = {
+ {
+ .vaddr = 0xd0000000,
+ .paddr = 0,
+ .asid = 1,
+ .attr = 7,
+ .variable = false,
+ }, {
+ .vaddr = 0xd8000000,
+ .paddr = 0,
+ .asid = 1,
+ .attr = 3,
+ .variable = false,
+ }
+ };
+ static const xtensa_tlb_entry way6[] = {
+ {
+ .vaddr = 0xe0000000,
+ .paddr = 0xf0000000,
+ .asid = 1,
+ .attr = 7,
+ .variable = false,
+ }, {
+ .vaddr = 0xf0000000,
+ .paddr = 0xf0000000,
+ .asid = 1,
+ .attr = 3,
+ .variable = false,
+ }
+ };
+ memcpy(entry[5], way5, sizeof(way5));
+ memcpy(entry[6], way6, sizeof(way6));
+ } else {
+ uint32_t ei;
+ for (ei = 0; ei < 8; ++ei) {
+ entry[6][ei].vaddr = ei << 29;
+ entry[6][ei].paddr = ei << 29;
+ entry[6][ei].asid = 1;
+ entry[6][ei].attr = 3;
+ }
+ }
+}
+
+static void reset_tlb_region_way0(CPUXtensaState *env,
+ xtensa_tlb_entry entry[][MAX_TLB_WAY_SIZE])
+{
+ unsigned ei;
+
+ for (ei = 0; ei < 8; ++ei) {
+ entry[0][ei].vaddr = ei << 29;
+ entry[0][ei].paddr = ei << 29;
+ entry[0][ei].asid = 1;
+ entry[0][ei].attr = 2;
+ entry[0][ei].variable = true;
+ }
+}
+
+void xtensa_reset_mmu(CPUXtensaState *env)
+{
+ if (xtensa_option_enabled(env->config, XTENSA_OPTION_MMU)) {
+ env->sregs[RASID] = 0x04030201;
+ env->sregs[ITLBCFG] = 0;
+ env->sregs[DTLBCFG] = 0;
+ env->autorefill_idx = 0;
+ reset_tlb_mmu_all_ways(env, &env->config->itlb, env->itlb);
+ reset_tlb_mmu_all_ways(env, &env->config->dtlb, env->dtlb);
+ reset_tlb_mmu_ways56(env, &env->config->itlb, env->itlb);
+ reset_tlb_mmu_ways56(env, &env->config->dtlb, env->dtlb);
+ } else if (xtensa_option_enabled(env->config, XTENSA_OPTION_MPU)) {
+ unsigned i;
+
+ env->sregs[MPUENB] = 0;
+ env->sregs[MPUCFG] = env->config->n_mpu_fg_segments;
+ env->sregs[CACHEADRDIS] = 0;
+ assert(env->config->n_mpu_bg_segments > 0 &&
+ env->config->mpu_bg[0].vaddr == 0);
+ for (i = 1; i < env->config->n_mpu_bg_segments; ++i) {
+ assert(env->config->mpu_bg[i].vaddr >=
+ env->config->mpu_bg[i - 1].vaddr);
+ }
+ } else {
+ env->sregs[CACHEATTR] = 0x22222222;
+ reset_tlb_region_way0(env, env->itlb);
+ reset_tlb_region_way0(env, env->dtlb);
+ }
+}
+
+static unsigned get_ring(const CPUXtensaState *env, uint8_t asid)
+{
+ unsigned i;
+ for (i = 0; i < 4; ++i) {
+ if (((env->sregs[RASID] >> i * 8) & 0xff) == asid) {
+ return i;
+ }
+ }
+ return 0xff;
+}
+
+/*!
+ * Lookup xtensa TLB for the given virtual address.
+ * See ISA, 4.6.2.2
+ *
+ * \param pwi: [out] way index
+ * \param pei: [out] entry index
+ * \param pring: [out] access ring
+ * \return 0 if ok, exception cause code otherwise
+ */
+int xtensa_tlb_lookup(const CPUXtensaState *env, uint32_t addr, bool dtlb,
+ uint32_t *pwi, uint32_t *pei, uint8_t *pring)
+{
+ const xtensa_tlb *tlb = dtlb ?
+ &env->config->dtlb : &env->config->itlb;
+ const xtensa_tlb_entry (*entry)[MAX_TLB_WAY_SIZE] = dtlb ?
+ env->dtlb : env->itlb;
+
+ int nhits = 0;
+ unsigned wi;
+
+ for (wi = 0; wi < tlb->nways; ++wi) {
+ uint32_t vpn;
+ uint32_t ei;
+ xtensa_split_tlb_entry_spec_way(env, addr, dtlb, &vpn, wi, &ei);
+ if (entry[wi][ei].vaddr == vpn && entry[wi][ei].asid) {
+ unsigned ring = get_ring(env, entry[wi][ei].asid);
+ if (ring < 4) {
+ if (++nhits > 1) {
+ return dtlb ?
+ LOAD_STORE_TLB_MULTI_HIT_CAUSE :
+ INST_TLB_MULTI_HIT_CAUSE;
+ }
+ *pwi = wi;
+ *pei = ei;
+ *pring = ring;
+ }
+ }
+ }
+ return nhits ? 0 :
+ (dtlb ? LOAD_STORE_TLB_MISS_CAUSE : INST_TLB_MISS_CAUSE);
+}
+
+/*!
+ * Convert MMU ATTR to PAGE_{READ,WRITE,EXEC} mask.
+ * See ISA, 4.6.5.10
+ */
+unsigned mmu_attr_to_access(uint32_t attr)
+{
+ unsigned access = 0;
+
+ if (attr < 12) {
+ access |= PAGE_READ;
+ if (attr & 0x1) {
+ access |= PAGE_EXEC;
+ }
+ if (attr & 0x2) {
+ access |= PAGE_WRITE;
+ }
+
+ switch (attr & 0xc) {
+ case 0:
+ access |= PAGE_CACHE_BYPASS;
+ break;
+
+ case 4:
+ access |= PAGE_CACHE_WB;
+ break;
+
+ case 8:
+ access |= PAGE_CACHE_WT;
+ break;
+ }
+ } else if (attr == 13) {
+ access |= PAGE_READ | PAGE_WRITE | PAGE_CACHE_ISOLATE;
+ }
+ return access;
+}
+
+/*!
+ * Convert region protection ATTR to PAGE_{READ,WRITE,EXEC} mask.
+ * See ISA, 4.6.3.3
+ */
+unsigned region_attr_to_access(uint32_t attr)
+{
+ static const unsigned access[16] = {
+ [0] = PAGE_READ | PAGE_WRITE | PAGE_CACHE_WT,
+ [1] = PAGE_READ | PAGE_WRITE | PAGE_EXEC | PAGE_CACHE_WT,
+ [2] = PAGE_READ | PAGE_WRITE | PAGE_EXEC | PAGE_CACHE_BYPASS,
+ [3] = PAGE_EXEC | PAGE_CACHE_WB,
+ [4] = PAGE_READ | PAGE_WRITE | PAGE_EXEC | PAGE_CACHE_WB,
+ [5] = PAGE_READ | PAGE_WRITE | PAGE_EXEC | PAGE_CACHE_WB,
+ [14] = PAGE_READ | PAGE_WRITE | PAGE_CACHE_ISOLATE,
+ };
+
+ return access[attr & 0xf];
+}
+
+/*!
+ * Convert cacheattr to PAGE_{READ,WRITE,EXEC} mask.
+ * See ISA, A.2.14 The Cache Attribute Register
+ */
+unsigned cacheattr_attr_to_access(uint32_t attr)
+{
+ static const unsigned access[16] = {
+ [0] = PAGE_READ | PAGE_WRITE | PAGE_CACHE_WT,
+ [1] = PAGE_READ | PAGE_WRITE | PAGE_EXEC | PAGE_CACHE_WT,
+ [2] = PAGE_READ | PAGE_WRITE | PAGE_EXEC | PAGE_CACHE_BYPASS,
+ [3] = PAGE_EXEC | PAGE_CACHE_WB,
+ [4] = PAGE_READ | PAGE_WRITE | PAGE_EXEC | PAGE_CACHE_WB,
+ [14] = PAGE_READ | PAGE_WRITE | PAGE_CACHE_ISOLATE,
+ };
+
+ return access[attr & 0xf];
+}
+
+struct attr_pattern {
+ uint32_t mask;
+ uint32_t value;
+};
+
+static int attr_pattern_match(uint32_t attr,
+ const struct attr_pattern *pattern,
+ size_t n)
+{
+ size_t i;
+
+ for (i = 0; i < n; ++i) {
+ if ((attr & pattern[i].mask) == pattern[i].value) {
+ return 1;
+ }
+ }
+ return 0;
+}
+
+unsigned mpu_attr_to_cpu_cache(uint32_t attr)
+{
+ static const struct attr_pattern cpu_c[] = {
+ { .mask = 0x18f, .value = 0x089 },
+ { .mask = 0x188, .value = 0x080 },
+ { .mask = 0x180, .value = 0x180 },
+ };
+
+ unsigned type = 0;
+
+ if (attr_pattern_match(attr, cpu_c, ARRAY_SIZE(cpu_c))) {
+ type |= XTENSA_MPU_TYPE_CPU_CACHE;
+ if (attr & 0x10) {
+ type |= XTENSA_MPU_TYPE_CPU_C;
+ }
+ if (attr & 0x20) {
+ type |= XTENSA_MPU_TYPE_CPU_W;
+ }
+ if (attr & 0x40) {
+ type |= XTENSA_MPU_TYPE_CPU_R;
+ }
+ }
+ return type;
+}
+
+unsigned mpu_attr_to_type(uint32_t attr)
+{
+ static const struct attr_pattern device_type[] = {
+ { .mask = 0x1f6, .value = 0x000 },
+ { .mask = 0x1f6, .value = 0x006 },
+ };
+ static const struct attr_pattern sys_nc_type[] = {
+ { .mask = 0x1fe, .value = 0x018 },
+ { .mask = 0x1fe, .value = 0x01e },
+ { .mask = 0x18f, .value = 0x089 },
+ };
+ static const struct attr_pattern sys_c_type[] = {
+ { .mask = 0x1f8, .value = 0x010 },
+ { .mask = 0x188, .value = 0x080 },
+ { .mask = 0x1f0, .value = 0x030 },
+ { .mask = 0x180, .value = 0x180 },
+ };
+ static const struct attr_pattern b[] = {
+ { .mask = 0x1f7, .value = 0x001 },
+ { .mask = 0x1f7, .value = 0x007 },
+ { .mask = 0x1ff, .value = 0x019 },
+ { .mask = 0x1ff, .value = 0x01f },
+ };
+
+ unsigned type = 0;
+
+ attr = (attr & XTENSA_MPU_MEM_TYPE_MASK) >> XTENSA_MPU_MEM_TYPE_SHIFT;
+ if (attr_pattern_match(attr, device_type, ARRAY_SIZE(device_type))) {
+ type |= XTENSA_MPU_SYSTEM_TYPE_DEVICE;
+ if (attr & 0x80) {
+ type |= XTENSA_MPU_TYPE_INT;
+ }
+ }
+ if (attr_pattern_match(attr, sys_nc_type, ARRAY_SIZE(sys_nc_type))) {
+ type |= XTENSA_MPU_SYSTEM_TYPE_NC;
+ }
+ if (attr_pattern_match(attr, sys_c_type, ARRAY_SIZE(sys_c_type))) {
+ type |= XTENSA_MPU_SYSTEM_TYPE_C;
+ if (attr & 0x1) {
+ type |= XTENSA_MPU_TYPE_SYS_C;
+ }
+ if (attr & 0x2) {
+ type |= XTENSA_MPU_TYPE_SYS_W;
+ }
+ if (attr & 0x4) {
+ type |= XTENSA_MPU_TYPE_SYS_R;
+ }
+ }
+ if (attr_pattern_match(attr, b, ARRAY_SIZE(b))) {
+ type |= XTENSA_MPU_TYPE_B;
+ }
+ type |= mpu_attr_to_cpu_cache(attr);
+
+ return type;
+}
+
+unsigned mpu_attr_to_access(uint32_t attr, unsigned ring)
+{
+ static const unsigned access[2][16] = {
+ [0] = {
+ [4] = PAGE_READ,
+ [5] = PAGE_READ | PAGE_EXEC,
+ [6] = PAGE_READ | PAGE_WRITE,
+ [7] = PAGE_READ | PAGE_WRITE | PAGE_EXEC,
+ [8] = PAGE_WRITE,
+ [9] = PAGE_READ | PAGE_WRITE,
+ [10] = PAGE_READ | PAGE_WRITE,
+ [11] = PAGE_READ | PAGE_WRITE | PAGE_EXEC,
+ [12] = PAGE_READ,
+ [13] = PAGE_READ | PAGE_EXEC,
+ [14] = PAGE_READ | PAGE_WRITE,
+ [15] = PAGE_READ | PAGE_WRITE | PAGE_EXEC,
+ },
+ [1] = {
+ [8] = PAGE_WRITE,
+ [9] = PAGE_READ | PAGE_WRITE | PAGE_EXEC,
+ [10] = PAGE_READ,
+ [11] = PAGE_READ | PAGE_EXEC,
+ [12] = PAGE_READ,
+ [13] = PAGE_READ | PAGE_EXEC,
+ [14] = PAGE_READ | PAGE_WRITE,
+ [15] = PAGE_READ | PAGE_WRITE | PAGE_EXEC,
+ },
+ };
+ unsigned rv;
+ unsigned type;
+
+ type = mpu_attr_to_cpu_cache(attr);
+ rv = access[ring != 0][(attr & XTENSA_MPU_ACC_RIGHTS_MASK) >>
+ XTENSA_MPU_ACC_RIGHTS_SHIFT];
+
+ if (type & XTENSA_MPU_TYPE_CPU_CACHE) {
+ rv |= (type & XTENSA_MPU_TYPE_CPU_C) ? PAGE_CACHE_WB : PAGE_CACHE_WT;
+ } else {
+ rv |= PAGE_CACHE_BYPASS;
+ }
+ return rv;
+}
+
+static bool is_access_granted(unsigned access, int is_write)
+{
+ switch (is_write) {
+ case 0:
+ return access & PAGE_READ;
+
+ case 1:
+ return access & PAGE_WRITE;
+
+ case 2:
+ return access & PAGE_EXEC;
+
+ default:
+ return 0;
+ }
+}
+
+static bool get_pte(CPUXtensaState *env, uint32_t vaddr, uint32_t *pte);
+
+static int get_physical_addr_mmu(CPUXtensaState *env, bool update_tlb,
+ uint32_t vaddr, int is_write, int mmu_idx,
+ uint32_t *paddr, uint32_t *page_size,
+ unsigned *access, bool may_lookup_pt)
+{
+ bool dtlb = is_write != 2;
+ uint32_t wi;
+ uint32_t ei;
+ uint8_t ring;
+ uint32_t vpn;
+ uint32_t pte;
+ const xtensa_tlb_entry *entry = NULL;
+ xtensa_tlb_entry tmp_entry;
+ int ret = xtensa_tlb_lookup(env, vaddr, dtlb, &wi, &ei, &ring);
+
+ if ((ret == INST_TLB_MISS_CAUSE || ret == LOAD_STORE_TLB_MISS_CAUSE) &&
+ may_lookup_pt && get_pte(env, vaddr, &pte)) {
+ ring = (pte >> 4) & 0x3;
+ wi = 0;
+ xtensa_split_tlb_entry_spec_way(env, vaddr, dtlb, &vpn, wi, &ei);
+
+ if (update_tlb) {
+ wi = ++env->autorefill_idx & 0x3;
+ xtensa_tlb_set_entry(env, dtlb, wi, ei, vpn, pte);
+ env->sregs[EXCVADDR] = vaddr;
+ qemu_log_mask(CPU_LOG_MMU, "%s: autorefill(%08x): %08x -> %08x\n",
+ __func__, vaddr, vpn, pte);
+ } else {
+ xtensa_tlb_set_entry_mmu(env, &tmp_entry, dtlb, wi, ei, vpn, pte);
+ entry = &tmp_entry;
+ }
+ ret = 0;
+ }
+ if (ret != 0) {
+ return ret;
+ }
+
+ if (entry == NULL) {
+ entry = xtensa_tlb_get_entry(env, dtlb, wi, ei);
+ }
+
+ if (ring < mmu_idx) {
+ return dtlb ?
+ LOAD_STORE_PRIVILEGE_CAUSE :
+ INST_FETCH_PRIVILEGE_CAUSE;
+ }
+
+ *access = mmu_attr_to_access(entry->attr) &
+ ~(dtlb ? PAGE_EXEC : PAGE_READ | PAGE_WRITE);
+ if (!is_access_granted(*access, is_write)) {
+ return dtlb ?
+ (is_write ?
+ STORE_PROHIBITED_CAUSE :
+ LOAD_PROHIBITED_CAUSE) :
+ INST_FETCH_PROHIBITED_CAUSE;
+ }
+
+ *paddr = entry->paddr | (vaddr & ~xtensa_tlb_get_addr_mask(env, dtlb, wi));
+ *page_size = ~xtensa_tlb_get_addr_mask(env, dtlb, wi) + 1;
+
+ return 0;
+}
+
+static bool get_pte(CPUXtensaState *env, uint32_t vaddr, uint32_t *pte)
+{
+ CPUState *cs = env_cpu(env);
+ uint32_t paddr;
+ uint32_t page_size;
+ unsigned access;
+ uint32_t pt_vaddr =
+ (env->sregs[PTEVADDR] | (vaddr >> 10)) & 0xfffffffc;
+ int ret = get_physical_addr_mmu(env, false, pt_vaddr, 0, 0,
+ &paddr, &page_size, &access, false);
+
+ if (ret == 0) {
+ qemu_log_mask(CPU_LOG_MMU,
+ "%s: autorefill(%08x): PTE va = %08x, pa = %08x\n",
+ __func__, vaddr, pt_vaddr, paddr);
+ } else {
+ qemu_log_mask(CPU_LOG_MMU,
+ "%s: autorefill(%08x): PTE va = %08x, failed (%d)\n",
+ __func__, vaddr, pt_vaddr, ret);
+ }
+
+ if (ret == 0) {
+ MemTxResult result;
+
+ *pte = address_space_ldl(cs->as, paddr, MEMTXATTRS_UNSPECIFIED,
+ &result);
+ if (result != MEMTX_OK) {
+ qemu_log_mask(CPU_LOG_MMU,
+ "%s: couldn't load PTE: transaction failed (%u)\n",
+ __func__, (unsigned)result);
+ ret = 1;
+ }
+ }
+ return ret == 0;
+}
+
+static int get_physical_addr_region(CPUXtensaState *env,
+ uint32_t vaddr, int is_write, int mmu_idx,
+ uint32_t *paddr, uint32_t *page_size,
+ unsigned *access)
+{
+ bool dtlb = is_write != 2;
+ uint32_t wi = 0;
+ uint32_t ei = (vaddr >> 29) & 0x7;
+ const xtensa_tlb_entry *entry =
+ xtensa_tlb_get_entry(env, dtlb, wi, ei);
+
+ *access = region_attr_to_access(entry->attr);
+ if (!is_access_granted(*access, is_write)) {
+ return dtlb ?
+ (is_write ?
+ STORE_PROHIBITED_CAUSE :
+ LOAD_PROHIBITED_CAUSE) :
+ INST_FETCH_PROHIBITED_CAUSE;
+ }
+
+ *paddr = entry->paddr | (vaddr & ~REGION_PAGE_MASK);
+ *page_size = ~REGION_PAGE_MASK + 1;
+
+ return 0;
+}
+
+int xtensa_mpu_lookup(const xtensa_mpu_entry *entry, unsigned n,
+ uint32_t vaddr, unsigned *segment)
+{
+ unsigned nhits = 0;
+ unsigned i;
+
+ for (i = 0; i < n; ++i) {
+ if (vaddr >= entry[i].vaddr &&
+ (i == n - 1 || vaddr < entry[i + 1].vaddr)) {
+ if (nhits++) {
+ break;
+ }
+ *segment = i;
+ }
+ }
+ return nhits;
+}
+
+static int get_physical_addr_mpu(CPUXtensaState *env,
+ uint32_t vaddr, int is_write, int mmu_idx,
+ uint32_t *paddr, uint32_t *page_size,
+ unsigned *access)
+{
+ unsigned nhits;
+ unsigned segment;
+ uint32_t attr;
+
+ nhits = xtensa_mpu_lookup(env->mpu_fg, env->config->n_mpu_fg_segments,
+ vaddr, &segment);
+ if (nhits > 1) {
+ return is_write < 2 ?
+ LOAD_STORE_TLB_MULTI_HIT_CAUSE :
+ INST_TLB_MULTI_HIT_CAUSE;
+ } else if (nhits == 1 && (env->sregs[MPUENB] & (1u << segment))) {
+ attr = env->mpu_fg[segment].attr;
+ } else {
+ xtensa_mpu_lookup(env->config->mpu_bg,
+ env->config->n_mpu_bg_segments,
+ vaddr, &segment);
+ attr = env->config->mpu_bg[segment].attr;
+ }
+
+ *access = mpu_attr_to_access(attr, mmu_idx);
+ if (!is_access_granted(*access, is_write)) {
+ return is_write < 2 ?
+ (is_write ?
+ STORE_PROHIBITED_CAUSE :
+ LOAD_PROHIBITED_CAUSE) :
+ INST_FETCH_PROHIBITED_CAUSE;
+ }
+ *paddr = vaddr;
+ *page_size = env->config->mpu_align;
+ return 0;
+}
+
+/*!
+ * Convert virtual address to physical addr.
+ * MMU may issue pagewalk and change xtensa autorefill TLB way entry.
+ *
+ * \return 0 if ok, exception cause code otherwise
+ */
+int xtensa_get_physical_addr(CPUXtensaState *env, bool update_tlb,
+ uint32_t vaddr, int is_write, int mmu_idx,
+ uint32_t *paddr, uint32_t *page_size,
+ unsigned *access)
+{
+ if (xtensa_option_enabled(env->config, XTENSA_OPTION_MMU)) {
+ return get_physical_addr_mmu(env, update_tlb,
+ vaddr, is_write, mmu_idx, paddr,
+ page_size, access, true);
+ } else if (xtensa_option_bits_enabled(env->config,
+ XTENSA_OPTION_BIT(XTENSA_OPTION_REGION_PROTECTION) |
+ XTENSA_OPTION_BIT(XTENSA_OPTION_REGION_TRANSLATION))) {
+ return get_physical_addr_region(env, vaddr, is_write, mmu_idx,
+ paddr, page_size, access);
+ } else if (xtensa_option_enabled(env->config, XTENSA_OPTION_MPU)) {
+ return get_physical_addr_mpu(env, vaddr, is_write, mmu_idx,
+ paddr, page_size, access);
+ } else {
+ *paddr = vaddr;
+ *page_size = TARGET_PAGE_SIZE;
+ *access = cacheattr_attr_to_access(env->sregs[CACHEATTR] >>
+ ((vaddr & 0xe0000000) >> 27));
+ return 0;
+ }
+}
diff --git a/target/xtensa/mmu_helper.c b/target/xtensa/mmu_helper.c
index 31ee3fa957..8be8d79dcd 100644
--- a/target/xtensa/mmu_helper.c
+++ b/target/xtensa/mmu_helper.c
@@ -26,38 +26,12 @@
*/
#include "qemu/osdep.h"
-#include "qemu/log.h"
#include "qemu/qemu-print.h"
#include "qemu/units.h"
-#include "cpu.h"
#include "exec/helper-proto.h"
-#include "qemu/host-utils.h"
#include "exec/exec-all.h"
-
-#define XTENSA_MPU_SEGMENT_MASK 0x0000001f
-#define XTENSA_MPU_ACC_RIGHTS_MASK 0x00000f00
-#define XTENSA_MPU_ACC_RIGHTS_SHIFT 8
-#define XTENSA_MPU_MEM_TYPE_MASK 0x001ff000
-#define XTENSA_MPU_MEM_TYPE_SHIFT 12
-#define XTENSA_MPU_ATTR_MASK 0x001fff00
-
-#define XTENSA_MPU_PROBE_B 0x40000000
-#define XTENSA_MPU_PROBE_V 0x80000000
-
-#define XTENSA_MPU_SYSTEM_TYPE_DEVICE 0x0001
-#define XTENSA_MPU_SYSTEM_TYPE_NC 0x0002
-#define XTENSA_MPU_SYSTEM_TYPE_C 0x0003
-#define XTENSA_MPU_SYSTEM_TYPE_MASK 0x0003
-
-#define XTENSA_MPU_TYPE_SYS_C 0x0010
-#define XTENSA_MPU_TYPE_SYS_W 0x0020
-#define XTENSA_MPU_TYPE_SYS_R 0x0040
-#define XTENSA_MPU_TYPE_CPU_C 0x0100
-#define XTENSA_MPU_TYPE_CPU_W 0x0200
-#define XTENSA_MPU_TYPE_CPU_R 0x0400
-#define XTENSA_MPU_TYPE_CPU_CACHE 0x0800
-#define XTENSA_MPU_TYPE_B 0x1000
-#define XTENSA_MPU_TYPE_INT 0x2000
+#include "cpu.h"
+#include "mmu.h"
void HELPER(itlb_hit_test)(CPUXtensaState *env, uint32_t vaddr)
{
@@ -78,421 +52,6 @@ void HELPER(wsr_rasid)(CPUXtensaState *env, uint32_t v)
}
}
-static uint32_t get_page_size(const CPUXtensaState *env,
- bool dtlb, uint32_t way)
-{
- uint32_t tlbcfg = env->sregs[dtlb ? DTLBCFG : ITLBCFG];
-
- switch (way) {
- case 4:
- return (tlbcfg >> 16) & 0x3;
-
- case 5:
- return (tlbcfg >> 20) & 0x1;
-
- case 6:
- return (tlbcfg >> 24) & 0x1;
-
- default:
- return 0;
- }
-}
-
-/*!
- * Get bit mask for the virtual address bits translated by the TLB way
- */
-static uint32_t xtensa_tlb_get_addr_mask(const CPUXtensaState *env,
- bool dtlb, uint32_t way)
-{
- if (xtensa_option_enabled(env->config, XTENSA_OPTION_MMU)) {
- bool varway56 = dtlb ?
- env->config->dtlb.varway56 :
- env->config->itlb.varway56;
-
- switch (way) {
- case 4:
- return 0xfff00000 << get_page_size(env, dtlb, way) * 2;
-
- case 5:
- if (varway56) {
- return 0xf8000000 << get_page_size(env, dtlb, way);
- } else {
- return 0xf8000000;
- }
-
- case 6:
- if (varway56) {
- return 0xf0000000 << (1 - get_page_size(env, dtlb, way));
- } else {
- return 0xf0000000;
- }
-
- default:
- return 0xfffff000;
- }
- } else {
- return REGION_PAGE_MASK;
- }
-}
-
-/*!
- * Get bit mask for the 'VPN without index' field.
- * See ISA, 4.6.5.6, data format for RxTLB0
- */
-static uint32_t xtensa_get_vpn_mask(const CPUXtensaState *env, bool dtlb,
- uint32_t way)
-{
- if (way < 4) {
- bool is32 = (dtlb ?
- env->config->dtlb.nrefillentries :
- env->config->itlb.nrefillentries) == 32;
- return is32 ? 0xffff8000 : 0xffffc000;
- } else if (way == 4) {
- return xtensa_tlb_get_addr_mask(env, dtlb, way) << 2;
- } else if (way <= 6) {
- uint32_t mask = xtensa_tlb_get_addr_mask(env, dtlb, way);
- bool varway56 = dtlb ?
- env->config->dtlb.varway56 :
- env->config->itlb.varway56;
-
- if (varway56) {
- return mask << (way == 5 ? 2 : 3);
- } else {
- return mask << 1;
- }
- } else {
- return 0xfffff000;
- }
-}
-
-/*!
- * Split virtual address into VPN (with index) and entry index
- * for the given TLB way
- */
-static void xtensa_split_tlb_entry_spec_way(const CPUXtensaState *env,
- uint32_t v,
- bool dtlb, uint32_t *vpn,
- uint32_t wi, uint32_t *ei)
-{
- bool varway56 = dtlb ?
- env->config->dtlb.varway56 :
- env->config->itlb.varway56;
-
- if (!dtlb) {
- wi &= 7;
- }
-
- if (wi < 4) {
- bool is32 = (dtlb ?
- env->config->dtlb.nrefillentries :
- env->config->itlb.nrefillentries) == 32;
- *ei = (v >> 12) & (is32 ? 0x7 : 0x3);
- } else {
- switch (wi) {
- case 4:
- {
- uint32_t eibase = 20 + get_page_size(env, dtlb, wi) * 2;
- *ei = (v >> eibase) & 0x3;
- }
- break;
-
- case 5:
- if (varway56) {
- uint32_t eibase = 27 + get_page_size(env, dtlb, wi);
- *ei = (v >> eibase) & 0x3;
- } else {
- *ei = (v >> 27) & 0x1;
- }
- break;
-
- case 6:
- if (varway56) {
- uint32_t eibase = 29 - get_page_size(env, dtlb, wi);
- *ei = (v >> eibase) & 0x7;
- } else {
- *ei = (v >> 28) & 0x1;
- }
- break;
-
- default:
- *ei = 0;
- break;
- }
- }
- *vpn = v & xtensa_tlb_get_addr_mask(env, dtlb, wi);
-}
-
-/*!
- * Split TLB address into TLB way, entry index and VPN (with index).
- * See ISA, 4.6.5.5 - 4.6.5.8 for the TLB addressing format
- */
-static bool xtensa_split_tlb_entry_spec(CPUXtensaState *env,
- uint32_t v, bool dtlb,
- uint32_t *vpn, uint32_t *wi,
- uint32_t *ei)
-{
- if (xtensa_option_enabled(env->config, XTENSA_OPTION_MMU)) {
- *wi = v & (dtlb ? 0xf : 0x7);
- if (*wi < (dtlb ? env->config->dtlb.nways : env->config->itlb.nways)) {
- xtensa_split_tlb_entry_spec_way(env, v, dtlb, vpn, *wi, ei);
- return true;
- } else {
- return false;
- }
- } else {
- *vpn = v & REGION_PAGE_MASK;
- *wi = 0;
- *ei = (v >> 29) & 0x7;
- return true;
- }
-}
-
-static xtensa_tlb_entry *xtensa_tlb_get_entry(CPUXtensaState *env, bool dtlb,
- unsigned wi, unsigned ei)
-{
- const xtensa_tlb *tlb = dtlb ? &env->config->dtlb : &env->config->itlb;
-
- assert(wi < tlb->nways && ei < tlb->way_size[wi]);
- return dtlb ?
- env->dtlb[wi] + ei :
- env->itlb[wi] + ei;
-}
-
-static xtensa_tlb_entry *xtensa_get_tlb_entry(CPUXtensaState *env,
- uint32_t v, bool dtlb, uint32_t *pwi)
-{
- uint32_t vpn;
- uint32_t wi;
- uint32_t ei;
-
- if (xtensa_split_tlb_entry_spec(env, v, dtlb, &vpn, &wi, &ei)) {
- if (pwi) {
- *pwi = wi;
- }
- return xtensa_tlb_get_entry(env, dtlb, wi, ei);
- } else {
- return NULL;
- }
-}
-
-static void xtensa_tlb_set_entry_mmu(const CPUXtensaState *env,
- xtensa_tlb_entry *entry, bool dtlb,
- unsigned wi, unsigned ei, uint32_t vpn,
- uint32_t pte)
-{
- entry->vaddr = vpn;
- entry->paddr = pte & xtensa_tlb_get_addr_mask(env, dtlb, wi);
- entry->asid = (env->sregs[RASID] >> ((pte >> 1) & 0x18)) & 0xff;
- entry->attr = pte & 0xf;
-}
-
-static void xtensa_tlb_set_entry(CPUXtensaState *env, bool dtlb,
- unsigned wi, unsigned ei,
- uint32_t vpn, uint32_t pte)
-{
- CPUState *cs = env_cpu(env);
- xtensa_tlb_entry *entry = xtensa_tlb_get_entry(env, dtlb, wi, ei);
-
- if (xtensa_option_enabled(env->config, XTENSA_OPTION_MMU)) {
- if (entry->variable) {
- if (entry->asid) {
- tlb_flush_page(cs, entry->vaddr);
- }
- xtensa_tlb_set_entry_mmu(env, entry, dtlb, wi, ei, vpn, pte);
- tlb_flush_page(cs, entry->vaddr);
- } else {
- qemu_log_mask(LOG_GUEST_ERROR,
- "%s %d, %d, %d trying to set immutable entry\n",
- __func__, dtlb, wi, ei);
- }
- } else {
- tlb_flush_page(cs, entry->vaddr);
- if (xtensa_option_enabled(env->config,
- XTENSA_OPTION_REGION_TRANSLATION)) {
- entry->paddr = pte & REGION_PAGE_MASK;
- }
- entry->attr = pte & 0xf;
- }
-}
-
-hwaddr xtensa_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
-{
- XtensaCPU *cpu = XTENSA_CPU(cs);
- uint32_t paddr;
- uint32_t page_size;
- unsigned access;
-
- if (xtensa_get_physical_addr(&cpu->env, false, addr, 0, 0,
- &paddr, &page_size, &access) == 0) {
- return paddr;
- }
- if (xtensa_get_physical_addr(&cpu->env, false, addr, 2, 0,
- &paddr, &page_size, &access) == 0) {
- return paddr;
- }
- return ~0;
-}
-
-static void reset_tlb_mmu_all_ways(CPUXtensaState *env,
- const xtensa_tlb *tlb,
- xtensa_tlb_entry entry[][MAX_TLB_WAY_SIZE])
-{
- unsigned wi, ei;
-
- for (wi = 0; wi < tlb->nways; ++wi) {
- for (ei = 0; ei < tlb->way_size[wi]; ++ei) {
- entry[wi][ei].asid = 0;
- entry[wi][ei].variable = true;
- }
- }
-}
-
-static void reset_tlb_mmu_ways56(CPUXtensaState *env,
- const xtensa_tlb *tlb,
- xtensa_tlb_entry entry[][MAX_TLB_WAY_SIZE])
-{
- if (!tlb->varway56) {
- static const xtensa_tlb_entry way5[] = {
- {
- .vaddr = 0xd0000000,
- .paddr = 0,
- .asid = 1,
- .attr = 7,
- .variable = false,
- }, {
- .vaddr = 0xd8000000,
- .paddr = 0,
- .asid = 1,
- .attr = 3,
- .variable = false,
- }
- };
- static const xtensa_tlb_entry way6[] = {
- {
- .vaddr = 0xe0000000,
- .paddr = 0xf0000000,
- .asid = 1,
- .attr = 7,
- .variable = false,
- }, {
- .vaddr = 0xf0000000,
- .paddr = 0xf0000000,
- .asid = 1,
- .attr = 3,
- .variable = false,
- }
- };
- memcpy(entry[5], way5, sizeof(way5));
- memcpy(entry[6], way6, sizeof(way6));
- } else {
- uint32_t ei;
- for (ei = 0; ei < 8; ++ei) {
- entry[6][ei].vaddr = ei << 29;
- entry[6][ei].paddr = ei << 29;
- entry[6][ei].asid = 1;
- entry[6][ei].attr = 3;
- }
- }
-}
-
-static void reset_tlb_region_way0(CPUXtensaState *env,
- xtensa_tlb_entry entry[][MAX_TLB_WAY_SIZE])
-{
- unsigned ei;
-
- for (ei = 0; ei < 8; ++ei) {
- entry[0][ei].vaddr = ei << 29;
- entry[0][ei].paddr = ei << 29;
- entry[0][ei].asid = 1;
- entry[0][ei].attr = 2;
- entry[0][ei].variable = true;
- }
-}
-
-void xtensa_reset_mmu(CPUXtensaState *env)
-{
- if (xtensa_option_enabled(env->config, XTENSA_OPTION_MMU)) {
- env->sregs[RASID] = 0x04030201;
- env->sregs[ITLBCFG] = 0;
- env->sregs[DTLBCFG] = 0;
- env->autorefill_idx = 0;
- reset_tlb_mmu_all_ways(env, &env->config->itlb, env->itlb);
- reset_tlb_mmu_all_ways(env, &env->config->dtlb, env->dtlb);
- reset_tlb_mmu_ways56(env, &env->config->itlb, env->itlb);
- reset_tlb_mmu_ways56(env, &env->config->dtlb, env->dtlb);
- } else if (xtensa_option_enabled(env->config, XTENSA_OPTION_MPU)) {
- unsigned i;
-
- env->sregs[MPUENB] = 0;
- env->sregs[MPUCFG] = env->config->n_mpu_fg_segments;
- env->sregs[CACHEADRDIS] = 0;
- assert(env->config->n_mpu_bg_segments > 0 &&
- env->config->mpu_bg[0].vaddr == 0);
- for (i = 1; i < env->config->n_mpu_bg_segments; ++i) {
- assert(env->config->mpu_bg[i].vaddr >=
- env->config->mpu_bg[i - 1].vaddr);
- }
- } else {
- env->sregs[CACHEATTR] = 0x22222222;
- reset_tlb_region_way0(env, env->itlb);
- reset_tlb_region_way0(env, env->dtlb);
- }
-}
-
-static unsigned get_ring(const CPUXtensaState *env, uint8_t asid)
-{
- unsigned i;
- for (i = 0; i < 4; ++i) {
- if (((env->sregs[RASID] >> i * 8) & 0xff) == asid) {
- return i;
- }
- }
- return 0xff;
-}
-
-/*!
- * Lookup xtensa TLB for the given virtual address.
- * See ISA, 4.6.2.2
- *
- * \param pwi: [out] way index
- * \param pei: [out] entry index
- * \param pring: [out] access ring
- * \return 0 if ok, exception cause code otherwise
- */
-static int xtensa_tlb_lookup(const CPUXtensaState *env,
- uint32_t addr, bool dtlb,
- uint32_t *pwi, uint32_t *pei, uint8_t *pring)
-{
- const xtensa_tlb *tlb = dtlb ?
- &env->config->dtlb : &env->config->itlb;
- const xtensa_tlb_entry (*entry)[MAX_TLB_WAY_SIZE] = dtlb ?
- env->dtlb : env->itlb;
-
- int nhits = 0;
- unsigned wi;
-
- for (wi = 0; wi < tlb->nways; ++wi) {
- uint32_t vpn;
- uint32_t ei;
- xtensa_split_tlb_entry_spec_way(env, addr, dtlb, &vpn, wi, &ei);
- if (entry[wi][ei].vaddr == vpn && entry[wi][ei].asid) {
- unsigned ring = get_ring(env, entry[wi][ei].asid);
- if (ring < 4) {
- if (++nhits > 1) {
- return dtlb ?
- LOAD_STORE_TLB_MULTI_HIT_CAUSE :
- INST_TLB_MULTI_HIT_CAUSE;
- }
- *pwi = wi;
- *pei = ei;
- *pring = ring;
- }
- }
- }
- return nhits ? 0 :
- (dtlb ? LOAD_STORE_TLB_MISS_CAUSE : INST_TLB_MISS_CAUSE);
-}
-
uint32_t HELPER(rtlb0)(CPUXtensaState *env, uint32_t v, uint32_t dtlb)
{
if (xtensa_option_enabled(env->config, XTENSA_OPTION_MMU)) {
@@ -569,384 +128,6 @@ void HELPER(wtlb)(CPUXtensaState *env, uint32_t p,
uint32_t v, uint32_t dtlb)
}
}
-/*!
- * Convert MMU ATTR to PAGE_{READ,WRITE,EXEC} mask.
- * See ISA, 4.6.5.10
- */
-static unsigned mmu_attr_to_access(uint32_t attr)
-{
- unsigned access = 0;
-
- if (attr < 12) {
- access |= PAGE_READ;
- if (attr & 0x1) {
- access |= PAGE_EXEC;
- }
- if (attr & 0x2) {
- access |= PAGE_WRITE;
- }
-
- switch (attr & 0xc) {
- case 0:
- access |= PAGE_CACHE_BYPASS;
- break;
-
- case 4:
- access |= PAGE_CACHE_WB;
- break;
-
- case 8:
- access |= PAGE_CACHE_WT;
- break;
- }
- } else if (attr == 13) {
- access |= PAGE_READ | PAGE_WRITE | PAGE_CACHE_ISOLATE;
- }
- return access;
-}
-
-/*!
- * Convert region protection ATTR to PAGE_{READ,WRITE,EXEC} mask.
- * See ISA, 4.6.3.3
- */
-static unsigned region_attr_to_access(uint32_t attr)
-{
- static const unsigned access[16] = {
- [0] = PAGE_READ | PAGE_WRITE | PAGE_CACHE_WT,
- [1] = PAGE_READ | PAGE_WRITE | PAGE_EXEC | PAGE_CACHE_WT,
- [2] = PAGE_READ | PAGE_WRITE | PAGE_EXEC | PAGE_CACHE_BYPASS,
- [3] = PAGE_EXEC | PAGE_CACHE_WB,
- [4] = PAGE_READ | PAGE_WRITE | PAGE_EXEC | PAGE_CACHE_WB,
- [5] = PAGE_READ | PAGE_WRITE | PAGE_EXEC | PAGE_CACHE_WB,
- [14] = PAGE_READ | PAGE_WRITE | PAGE_CACHE_ISOLATE,
- };
-
- return access[attr & 0xf];
-}
-
-/*!
- * Convert cacheattr to PAGE_{READ,WRITE,EXEC} mask.
- * See ISA, A.2.14 The Cache Attribute Register
- */
-static unsigned cacheattr_attr_to_access(uint32_t attr)
-{
- static const unsigned access[16] = {
- [0] = PAGE_READ | PAGE_WRITE | PAGE_CACHE_WT,
- [1] = PAGE_READ | PAGE_WRITE | PAGE_EXEC | PAGE_CACHE_WT,
- [2] = PAGE_READ | PAGE_WRITE | PAGE_EXEC | PAGE_CACHE_BYPASS,
- [3] = PAGE_EXEC | PAGE_CACHE_WB,
- [4] = PAGE_READ | PAGE_WRITE | PAGE_EXEC | PAGE_CACHE_WB,
- [14] = PAGE_READ | PAGE_WRITE | PAGE_CACHE_ISOLATE,
- };
-
- return access[attr & 0xf];
-}
-
-struct attr_pattern {
- uint32_t mask;
- uint32_t value;
-};
-
-static int attr_pattern_match(uint32_t attr,
- const struct attr_pattern *pattern,
- size_t n)
-{
- size_t i;
-
- for (i = 0; i < n; ++i) {
- if ((attr & pattern[i].mask) == pattern[i].value) {
- return 1;
- }
- }
- return 0;
-}
-
-static unsigned mpu_attr_to_cpu_cache(uint32_t attr)
-{
- static const struct attr_pattern cpu_c[] = {
- { .mask = 0x18f, .value = 0x089 },
- { .mask = 0x188, .value = 0x080 },
- { .mask = 0x180, .value = 0x180 },
- };
-
- unsigned type = 0;
-
- if (attr_pattern_match(attr, cpu_c, ARRAY_SIZE(cpu_c))) {
- type |= XTENSA_MPU_TYPE_CPU_CACHE;
- if (attr & 0x10) {
- type |= XTENSA_MPU_TYPE_CPU_C;
- }
- if (attr & 0x20) {
- type |= XTENSA_MPU_TYPE_CPU_W;
- }
- if (attr & 0x40) {
- type |= XTENSA_MPU_TYPE_CPU_R;
- }
- }
- return type;
-}
-
-static unsigned mpu_attr_to_type(uint32_t attr)
-{
- static const struct attr_pattern device_type[] = {
- { .mask = 0x1f6, .value = 0x000 },
- { .mask = 0x1f6, .value = 0x006 },
- };
- static const struct attr_pattern sys_nc_type[] = {
- { .mask = 0x1fe, .value = 0x018 },
- { .mask = 0x1fe, .value = 0x01e },
- { .mask = 0x18f, .value = 0x089 },
- };
- static const struct attr_pattern sys_c_type[] = {
- { .mask = 0x1f8, .value = 0x010 },
- { .mask = 0x188, .value = 0x080 },
- { .mask = 0x1f0, .value = 0x030 },
- { .mask = 0x180, .value = 0x180 },
- };
- static const struct attr_pattern b[] = {
- { .mask = 0x1f7, .value = 0x001 },
- { .mask = 0x1f7, .value = 0x007 },
- { .mask = 0x1ff, .value = 0x019 },
- { .mask = 0x1ff, .value = 0x01f },
- };
-
- unsigned type = 0;
-
- attr = (attr & XTENSA_MPU_MEM_TYPE_MASK) >> XTENSA_MPU_MEM_TYPE_SHIFT;
- if (attr_pattern_match(attr, device_type, ARRAY_SIZE(device_type))) {
- type |= XTENSA_MPU_SYSTEM_TYPE_DEVICE;
- if (attr & 0x80) {
- type |= XTENSA_MPU_TYPE_INT;
- }
- }
- if (attr_pattern_match(attr, sys_nc_type, ARRAY_SIZE(sys_nc_type))) {
- type |= XTENSA_MPU_SYSTEM_TYPE_NC;
- }
- if (attr_pattern_match(attr, sys_c_type, ARRAY_SIZE(sys_c_type))) {
- type |= XTENSA_MPU_SYSTEM_TYPE_C;
- if (attr & 0x1) {
- type |= XTENSA_MPU_TYPE_SYS_C;
- }
- if (attr & 0x2) {
- type |= XTENSA_MPU_TYPE_SYS_W;
- }
- if (attr & 0x4) {
- type |= XTENSA_MPU_TYPE_SYS_R;
- }
- }
- if (attr_pattern_match(attr, b, ARRAY_SIZE(b))) {
- type |= XTENSA_MPU_TYPE_B;
- }
- type |= mpu_attr_to_cpu_cache(attr);
-
- return type;
-}
-
-static unsigned mpu_attr_to_access(uint32_t attr, unsigned ring)
-{
- static const unsigned access[2][16] = {
- [0] = {
- [4] = PAGE_READ,
- [5] = PAGE_READ | PAGE_EXEC,
- [6] = PAGE_READ | PAGE_WRITE,
- [7] = PAGE_READ | PAGE_WRITE | PAGE_EXEC,
- [8] = PAGE_WRITE,
- [9] = PAGE_READ | PAGE_WRITE,
- [10] = PAGE_READ | PAGE_WRITE,
- [11] = PAGE_READ | PAGE_WRITE | PAGE_EXEC,
- [12] = PAGE_READ,
- [13] = PAGE_READ | PAGE_EXEC,
- [14] = PAGE_READ | PAGE_WRITE,
- [15] = PAGE_READ | PAGE_WRITE | PAGE_EXEC,
- },
- [1] = {
- [8] = PAGE_WRITE,
- [9] = PAGE_READ | PAGE_WRITE | PAGE_EXEC,
- [10] = PAGE_READ,
- [11] = PAGE_READ | PAGE_EXEC,
- [12] = PAGE_READ,
- [13] = PAGE_READ | PAGE_EXEC,
- [14] = PAGE_READ | PAGE_WRITE,
- [15] = PAGE_READ | PAGE_WRITE | PAGE_EXEC,
- },
- };
- unsigned rv;
- unsigned type;
-
- type = mpu_attr_to_cpu_cache(attr);
- rv = access[ring != 0][(attr & XTENSA_MPU_ACC_RIGHTS_MASK) >>
- XTENSA_MPU_ACC_RIGHTS_SHIFT];
-
- if (type & XTENSA_MPU_TYPE_CPU_CACHE) {
- rv |= (type & XTENSA_MPU_TYPE_CPU_C) ? PAGE_CACHE_WB : PAGE_CACHE_WT;
- } else {
- rv |= PAGE_CACHE_BYPASS;
- }
- return rv;
-}
-
-static bool is_access_granted(unsigned access, int is_write)
-{
- switch (is_write) {
- case 0:
- return access & PAGE_READ;
-
- case 1:
- return access & PAGE_WRITE;
-
- case 2:
- return access & PAGE_EXEC;
-
- default:
- return 0;
- }
-}
-
-static bool get_pte(CPUXtensaState *env, uint32_t vaddr, uint32_t *pte);
-
-static int get_physical_addr_mmu(CPUXtensaState *env, bool update_tlb,
- uint32_t vaddr, int is_write, int mmu_idx,
- uint32_t *paddr, uint32_t *page_size,
- unsigned *access, bool may_lookup_pt)
-{
- bool dtlb = is_write != 2;
- uint32_t wi;
- uint32_t ei;
- uint8_t ring;
- uint32_t vpn;
- uint32_t pte;
- const xtensa_tlb_entry *entry = NULL;
- xtensa_tlb_entry tmp_entry;
- int ret = xtensa_tlb_lookup(env, vaddr, dtlb, &wi, &ei, &ring);
-
- if ((ret == INST_TLB_MISS_CAUSE || ret == LOAD_STORE_TLB_MISS_CAUSE) &&
- may_lookup_pt && get_pte(env, vaddr, &pte)) {
- ring = (pte >> 4) & 0x3;
- wi = 0;
- xtensa_split_tlb_entry_spec_way(env, vaddr, dtlb, &vpn, wi, &ei);
-
- if (update_tlb) {
- wi = ++env->autorefill_idx & 0x3;
- xtensa_tlb_set_entry(env, dtlb, wi, ei, vpn, pte);
- env->sregs[EXCVADDR] = vaddr;
- qemu_log_mask(CPU_LOG_MMU, "%s: autorefill(%08x): %08x -> %08x\n",
- __func__, vaddr, vpn, pte);
- } else {
- xtensa_tlb_set_entry_mmu(env, &tmp_entry, dtlb, wi, ei, vpn, pte);
- entry = &tmp_entry;
- }
- ret = 0;
- }
- if (ret != 0) {
- return ret;
- }
-
- if (entry == NULL) {
- entry = xtensa_tlb_get_entry(env, dtlb, wi, ei);
- }
-
- if (ring < mmu_idx) {
- return dtlb ?
- LOAD_STORE_PRIVILEGE_CAUSE :
- INST_FETCH_PRIVILEGE_CAUSE;
- }
-
- *access = mmu_attr_to_access(entry->attr) &
- ~(dtlb ? PAGE_EXEC : PAGE_READ | PAGE_WRITE);
- if (!is_access_granted(*access, is_write)) {
- return dtlb ?
- (is_write ?
- STORE_PROHIBITED_CAUSE :
- LOAD_PROHIBITED_CAUSE) :
- INST_FETCH_PROHIBITED_CAUSE;
- }
-
- *paddr = entry->paddr | (vaddr & ~xtensa_tlb_get_addr_mask(env, dtlb, wi));
- *page_size = ~xtensa_tlb_get_addr_mask(env, dtlb, wi) + 1;
-
- return 0;
-}
-
-static bool get_pte(CPUXtensaState *env, uint32_t vaddr, uint32_t *pte)
-{
- CPUState *cs = env_cpu(env);
- uint32_t paddr;
- uint32_t page_size;
- unsigned access;
- uint32_t pt_vaddr =
- (env->sregs[PTEVADDR] | (vaddr >> 10)) & 0xfffffffc;
- int ret = get_physical_addr_mmu(env, false, pt_vaddr, 0, 0,
- &paddr, &page_size, &access, false);
-
- if (ret == 0) {
- qemu_log_mask(CPU_LOG_MMU,
- "%s: autorefill(%08x): PTE va = %08x, pa = %08x\n",
- __func__, vaddr, pt_vaddr, paddr);
- } else {
- qemu_log_mask(CPU_LOG_MMU,
- "%s: autorefill(%08x): PTE va = %08x, failed (%d)\n",
- __func__, vaddr, pt_vaddr, ret);
- }
-
- if (ret == 0) {
- MemTxResult result;
-
- *pte = address_space_ldl(cs->as, paddr, MEMTXATTRS_UNSPECIFIED,
- &result);
- if (result != MEMTX_OK) {
- qemu_log_mask(CPU_LOG_MMU,
- "%s: couldn't load PTE: transaction failed (%u)\n",
- __func__, (unsigned)result);
- ret = 1;
- }
- }
- return ret == 0;
-}
-
-static int get_physical_addr_region(CPUXtensaState *env,
- uint32_t vaddr, int is_write, int mmu_idx,
- uint32_t *paddr, uint32_t *page_size,
- unsigned *access)
-{
- bool dtlb = is_write != 2;
- uint32_t wi = 0;
- uint32_t ei = (vaddr >> 29) & 0x7;
- const xtensa_tlb_entry *entry =
- xtensa_tlb_get_entry(env, dtlb, wi, ei);
-
- *access = region_attr_to_access(entry->attr);
- if (!is_access_granted(*access, is_write)) {
- return dtlb ?
- (is_write ?
- STORE_PROHIBITED_CAUSE :
- LOAD_PROHIBITED_CAUSE) :
- INST_FETCH_PROHIBITED_CAUSE;
- }
-
- *paddr = entry->paddr | (vaddr & ~REGION_PAGE_MASK);
- *page_size = ~REGION_PAGE_MASK + 1;
-
- return 0;
-}
-
-static int xtensa_mpu_lookup(const xtensa_mpu_entry *entry, unsigned n,
- uint32_t vaddr, unsigned *segment)
-{
- unsigned nhits = 0;
- unsigned i;
-
- for (i = 0; i < n; ++i) {
- if (vaddr >= entry[i].vaddr &&
- (i == n - 1 || vaddr < entry[i + 1].vaddr)) {
- if (nhits++) {
- break;
- }
- *segment = i;
- }
- }
- return nhits;
-}
-
void HELPER(wsr_mpuenb)(CPUXtensaState *env, uint32_t v)
{
v &= (2u << (env->config->n_mpu_fg_segments - 1)) - 1;
@@ -1013,75 +194,6 @@ uint32_t HELPER(pptlb)(CPUXtensaState *env, uint32_t v)
}
}
-static int get_physical_addr_mpu(CPUXtensaState *env,
- uint32_t vaddr, int is_write, int mmu_idx,
- uint32_t *paddr, uint32_t *page_size,
- unsigned *access)
-{
- unsigned nhits;
- unsigned segment;
- uint32_t attr;
-
- nhits = xtensa_mpu_lookup(env->mpu_fg, env->config->n_mpu_fg_segments,
- vaddr, &segment);
- if (nhits > 1) {
- return is_write < 2 ?
- LOAD_STORE_TLB_MULTI_HIT_CAUSE :
- INST_TLB_MULTI_HIT_CAUSE;
- } else if (nhits == 1 && (env->sregs[MPUENB] & (1u << segment))) {
- attr = env->mpu_fg[segment].attr;
- } else {
- xtensa_mpu_lookup(env->config->mpu_bg,
- env->config->n_mpu_bg_segments,
- vaddr, &segment);
- attr = env->config->mpu_bg[segment].attr;
- }
-
- *access = mpu_attr_to_access(attr, mmu_idx);
- if (!is_access_granted(*access, is_write)) {
- return is_write < 2 ?
- (is_write ?
- STORE_PROHIBITED_CAUSE :
- LOAD_PROHIBITED_CAUSE) :
- INST_FETCH_PROHIBITED_CAUSE;
- }
- *paddr = vaddr;
- *page_size = env->config->mpu_align;
- return 0;
-}
-
-/*!
- * Convert virtual address to physical addr.
- * MMU may issue pagewalk and change xtensa autorefill TLB way entry.
- *
- * \return 0 if ok, exception cause code otherwise
- */
-int xtensa_get_physical_addr(CPUXtensaState *env, bool update_tlb,
- uint32_t vaddr, int is_write, int mmu_idx,
- uint32_t *paddr, uint32_t *page_size,
- unsigned *access)
-{
- if (xtensa_option_enabled(env->config, XTENSA_OPTION_MMU)) {
- return get_physical_addr_mmu(env, update_tlb,
- vaddr, is_write, mmu_idx, paddr,
- page_size, access, true);
- } else if (xtensa_option_bits_enabled(env->config,
- XTENSA_OPTION_BIT(XTENSA_OPTION_REGION_PROTECTION) |
- XTENSA_OPTION_BIT(XTENSA_OPTION_REGION_TRANSLATION))) {
- return get_physical_addr_region(env, vaddr, is_write, mmu_idx,
- paddr, page_size, access);
- } else if (xtensa_option_enabled(env->config, XTENSA_OPTION_MPU)) {
- return get_physical_addr_mpu(env, vaddr, is_write, mmu_idx,
- paddr, page_size, access);
- } else {
- *paddr = vaddr;
- *page_size = TARGET_PAGE_SIZE;
- *access = cacheattr_attr_to_access(env->sregs[CACHEATTR] >>
- ((vaddr & 0xe0000000) >> 27));
- return 0;
- }
-}
-
static void dump_tlb(CPUXtensaState *env, bool dtlb)
{
unsigned wi, ei;
diff --git a/target/xtensa/meson.build b/target/xtensa/meson.build
index f8d60101e3..46010c35c4 100644
--- a/target/xtensa/meson.build
+++ b/target/xtensa/meson.build
@@ -18,6 +18,7 @@ xtensa_ss.add(files(
xtensa_system_ss = ss.source_set()
xtensa_system_ss.add(files(
'dbg_helper.c',
+ 'mmu.c',
'mmu_helper.c',
'monitor.c',
'xtensa-semi.c',
--
2.41.0
- [PATCH-for-9.1 09/21] target/mips: Prefix MMU API with 'mips_', (continued)
- [PATCH-for-9.1 09/21] target/mips: Prefix MMU API with 'mips_', Philippe Mathieu-Daudé, 2024/03/21
- [PATCH-for-9.1 10/21] target/nios2: Prefix MMU API with 'nios2_', Philippe Mathieu-Daudé, 2024/03/21
- [PATCH-for-9.1 11/21] target/nios2: Move monitor commands to monitor.c, Philippe Mathieu-Daudé, 2024/03/21
- [PATCH-for-9.1 12/21] target/nios2: Replace qemu_printf() by monitor_printf() in monitor, Philippe Mathieu-Daudé, 2024/03/21
- [PATCH-for-9.1 13/21] target/ppc: Replace qemu_printf() by monitor_printf() in monitor, Philippe Mathieu-Daudé, 2024/03/21
- [PATCH-for-9.1 14/21] target/sh4: Extract sh4_dump_mmu() from hmp_info_tlb(), Philippe Mathieu-Daudé, 2024/03/21
- [PATCH-for-9.0? 15/21] target/sparc: Fix string format errors when DEBUG_MMU is defined, Philippe Mathieu-Daudé, 2024/03/21
- [PATCH-for-9.1 16/21] target/sparc: Replace qemu_printf() by monitor_printf() in monitor, Philippe Mathieu-Daudé, 2024/03/21
- [PATCH-for-9.1 17/21] target/xtensa: Prefix MMU API with 'xtensa_', Philippe Mathieu-Daudé, 2024/03/21
- [PATCH-for-9.1 21/21] target/xtensa: Replace qemu_printf() by monitor_printf() in monitor, Philippe Mathieu-Daudé, 2024/03/21
- [PATCH-for-9.1 18/21] target/xtensa: Extract MMU API to new mmu.c/mmu.h files,
Philippe Mathieu-Daudé <=
- [PATCH-for-9.1 20/21] target/xtensa: Move monitor commands to monitor.c, Philippe Mathieu-Daudé, 2024/03/21
- [PATCH-for-9.1 19/21] target/xtensa: Simplify dump_mpu() and dump_tlb(), Philippe Mathieu-Daudé, 2024/03/21