--- /dev/null
+/*
+ * Copyright (c) 2011, 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 "cpu.h"
+#include "exec/exec-all.h"
+#include "exec/gdbstub.h"
+#include "qemu/host-utils.h"
+#if !defined(CONFIG_USER_ONLY)
+#include "hw/loader.h"
+#endif
+
+static struct XtensaConfigList *xtensa_cores;
+
+static void xtensa_core_class_init(ObjectClass *oc, void *data)
+{
+ CPUClass *cc = CPU_CLASS(oc);
+ XtensaCPUClass *xcc = XTENSA_CPU_CLASS(oc);
+ const XtensaConfig *config = data;
+
+ xcc->config = config;
+
+ /* Use num_core_regs to see only non-privileged registers in an unmodified
+ * gdb. Use num_regs to see all registers. gdb modification is required
+ * for that: reset bit 0 in the 'flags' field of the registers definitions
+ * in the gdb/xtensa-config.c inside gdb source tree or inside gdb overlay.
+ */
+ cc->gdb_num_core_regs = config->gdb_regmap.num_regs;
+}
+
+void xtensa_finalize_config(XtensaConfig *config)
+{
+ unsigned i, n = 0;
+
+ if (config->gdb_regmap.num_regs) {
+ return;
+ }
+
+ for (i = 0; config->gdb_regmap.reg[i].targno >= 0; ++i) {
+ n += (config->gdb_regmap.reg[i].type != 6);
+ }
+ config->gdb_regmap.num_regs = n;
+}
+
+void xtensa_register_core(XtensaConfigList *node)
+{
+ TypeInfo type = {
+ .parent = TYPE_XTENSA_CPU,
+ .class_init = xtensa_core_class_init,
+ .class_data = (void *)node->config,
+ };
+
+ node->next = xtensa_cores;
+ xtensa_cores = node;
+ type.name = g_strdup_printf("%s-" TYPE_XTENSA_CPU, node->config->name);
+ type_register(&type);
+ g_free((gpointer)type.name);
+}
+
+static uint32_t check_hw_breakpoints(CPUXtensaState *env)
+{
+ unsigned i;
+
+ for (i = 0; i < env->config->ndbreak; ++i) {
+ if (env->cpu_watchpoint[i] &&
+ env->cpu_watchpoint[i]->flags & BP_WATCHPOINT_HIT) {
+ return DEBUGCAUSE_DB | (i << DEBUGCAUSE_DBNUM_SHIFT);
+ }
+ }
+ return 0;
+}
+
+void xtensa_breakpoint_handler(CPUState *cs)
+{
+ XtensaCPU *cpu = XTENSA_CPU(cs);
+ CPUXtensaState *env = &cpu->env;
+
+ if (cs->watchpoint_hit) {
+ if (cs->watchpoint_hit->flags & BP_CPU) {
+ uint32_t cause;
+
+ cs->watchpoint_hit = NULL;
+ cause = check_hw_breakpoints(env);
+ if (cause) {
+ debug_exception_env(env, cause);
+ }
+ cpu_resume_from_signal(cs, NULL);
+ }
+ }
+}
+
+XtensaCPU *cpu_xtensa_init(const char *cpu_model)
+{
+ ObjectClass *oc;
+ XtensaCPU *cpu;
+ CPUXtensaState *env;
+
+ oc = cpu_class_by_name(TYPE_XTENSA_CPU, cpu_model);
+ if (oc == NULL) {
+ return NULL;
+ }
+
+ cpu = XTENSA_CPU(object_new(object_class_get_name(oc)));
+ env = &cpu->env;
+
+ xtensa_irq_init(env);
+
+ object_property_set_bool(OBJECT(cpu), true, "realized", NULL);
+
+ return cpu;
+}
+
+
+void xtensa_cpu_list(FILE *f, fprintf_function cpu_fprintf)
+{
+ XtensaConfigList *core = xtensa_cores;
+ cpu_fprintf(f, "Available CPUs:\n");
+ for (; core; core = core->next) {
+ cpu_fprintf(f, " %s\n", core->config->name);
+ }
+}
+
+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 uint32_t relocated_vector(CPUXtensaState *env, uint32_t vector)
+{
+ if (xtensa_option_enabled(env->config,
+ XTENSA_OPTION_RELOCATABLE_VECTOR)) {
+ return vector - env->config->vecbase + env->sregs[VECBASE];
+ } else {
+ return vector;
+ }
+}
+
+/*!
+ * Handle penging IRQ.
+ * For the high priority interrupt jump to the corresponding interrupt vector.
+ * For the level-1 interrupt convert it to either user, kernel or double
+ * exception with the 'level-1 interrupt' exception cause.
+ */
+static void handle_interrupt(CPUXtensaState *env)
+{
+ int level = env->pending_irq_level;
+
+ if (level > xtensa_get_cintlevel(env) &&
+ level <= env->config->nlevel &&
+ (env->config->level_mask[level] &
+ env->sregs[INTSET] &
+ env->sregs[INTENABLE])) {
+ CPUState *cs = CPU(xtensa_env_get_cpu(env));
+
+ if (level > 1) {
+ env->sregs[EPC1 + level - 1] = env->pc;
+ env->sregs[EPS2 + level - 2] = env->sregs[PS];
+ env->sregs[PS] =
+ (env->sregs[PS] & ~PS_INTLEVEL) | level | PS_EXCM;
+ env->pc = relocated_vector(env,
+ env->config->interrupt_vector[level]);
+ } else {
+ env->sregs[EXCCAUSE] = LEVEL1_INTERRUPT_CAUSE;
+
+ if (env->sregs[PS] & PS_EXCM) {
+ if (env->config->ndepc) {
+ env->sregs[DEPC] = env->pc;
+ } else {
+ env->sregs[EPC1] = env->pc;
+ }
+ cs->exception_index = EXC_DOUBLE;
+ } else {
+ env->sregs[EPC1] = env->pc;
+ cs->exception_index =
+ (env->sregs[PS] & PS_UM) ? EXC_USER : EXC_KERNEL;
+ }
+ env->sregs[PS] |= PS_EXCM;
+ }
+ env->exception_taken = 1;
+ }
+}
+
+void xtensa_cpu_do_interrupt(CPUState *cs)
+{
+ XtensaCPU *cpu = XTENSA_CPU(cs);
+ CPUXtensaState *env = &cpu->env;
+
+ if (cs->exception_index == EXC_IRQ) {
+ qemu_log_mask(CPU_LOG_INT,
+ "%s(EXC_IRQ) level = %d, cintlevel = %d, "
+ "pc = %08x, a0 = %08x, ps = %08x, "
+ "intset = %08x, intenable = %08x, "
+ "ccount = %08x\n",
+ __func__, env->pending_irq_level, xtensa_get_cintlevel(env),
+ env->pc, env->regs[0], env->sregs[PS],
+ env->sregs[INTSET], env->sregs[INTENABLE],
+ env->sregs[CCOUNT]);
+ handle_interrupt(env);
+ }
+
+ switch (cs->exception_index) {
+ case EXC_WINDOW_OVERFLOW4:
+ case EXC_WINDOW_UNDERFLOW4:
+ case EXC_WINDOW_OVERFLOW8:
+ case EXC_WINDOW_UNDERFLOW8:
+ case EXC_WINDOW_OVERFLOW12:
+ case EXC_WINDOW_UNDERFLOW12:
+ case EXC_KERNEL:
+ case EXC_USER:
+ case EXC_DOUBLE:
+ case EXC_DEBUG:
+ qemu_log_mask(CPU_LOG_INT, "%s(%d) "
+ "pc = %08x, a0 = %08x, ps = %08x, ccount = %08x\n",
+ __func__, cs->exception_index,
+ env->pc, env->regs[0], env->sregs[PS], env->sregs[CCOUNT]);
+ if (env->config->exception_vector[cs->exception_index]) {
+ env->pc = relocated_vector(env,
+ env->config->exception_vector[cs->exception_index]);
+ env->exception_taken = 1;
+ } else {
+ qemu_log("%s(pc = %08x) bad exception_index: %d\n",
+ __func__, env->pc, cs->exception_index);
+ }
+ break;
+
+ case EXC_IRQ:
+ break;
+
+ default:
+ qemu_log("%s(pc = %08x) unknown exception_index: %d\n",
+ __func__, env->pc, cs->exception_index);
+ break;
+ }
+ check_interrupts(env);
+}
+
+bool xtensa_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
+{
+ if (interrupt_request & CPU_INTERRUPT_HARD) {
+ cs->exception_index = EXC_IRQ;
+ xtensa_cpu_do_interrupt(cs);
+ return true;
+ }
+ return false;
+}
+
+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 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 {
+ 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;
+ 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
+ */
+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];
+}
+
+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 int 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) == 0) {
+ ring = (pte >> 4) & 0x3;
+ wi = 0;
+ 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("%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 int get_pte(CPUXtensaState *env, uint32_t vaddr, uint32_t *pte)
+{
+ CPUState *cs = CPU(xtensa_env_get_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);
+
+ qemu_log("%s: trying autorefill(%08x) -> %08x\n", __func__,
+ vaddr, ret ? ~0 : paddr);
+
+ if (ret == 0) {
+ *pte = ldl_phys(cs->as, paddr);
+ }
+ return ret;
+}
+
+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;
+}
+
+/*!
+ * 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 {
+ *paddr = vaddr;
+ *page_size = TARGET_PAGE_SIZE;
+ *access = cacheattr_attr_to_access(
+ env->sregs[CACHEATTR] >> ((vaddr & 0xe0000000) >> 27));
+ return 0;
+ }
+}
+
+static void dump_tlb(FILE *f, fprintf_function cpu_fprintf,
+ CPUXtensaState *env, bool dtlb)
+{
+ unsigned wi, ei;
+ const xtensa_tlb *conf =
+ dtlb ? &env->config->dtlb : &env->config->itlb;
+ unsigned (*attr_to_access)(uint32_t) =
+ xtensa_option_enabled(env->config, XTENSA_OPTION_MMU) ?
+ mmu_attr_to_access : region_attr_to_access;
+
+ for (wi = 0; wi < conf->nways; ++wi) {
+ uint32_t sz = ~xtensa_tlb_get_addr_mask(env, dtlb, wi) + 1;
+ const char *sz_text;
+ bool print_header = true;
+
+ if (sz >= 0x100000) {
+ sz >>= 20;
+ sz_text = "MB";
+ } else {
+ sz >>= 10;
+ sz_text = "KB";
+ }
+
+ for (ei = 0; ei < conf->way_size[wi]; ++ei) {
+ const xtensa_tlb_entry *entry =
+ xtensa_tlb_get_entry(env, dtlb, wi, ei);
+
+ if (entry->asid) {
+ static const char * const cache_text[8] = {
+ [PAGE_CACHE_BYPASS >> PAGE_CACHE_SHIFT] = "Bypass",
+ [PAGE_CACHE_WT >> PAGE_CACHE_SHIFT] = "WT",
+ [PAGE_CACHE_WB >> PAGE_CACHE_SHIFT] = "WB",
+ [PAGE_CACHE_ISOLATE >> PAGE_CACHE_SHIFT] = "Isolate",
+ };
+ unsigned access = attr_to_access(entry->attr);
+ unsigned cache_idx = (access & PAGE_CACHE_MASK) >>
+ PAGE_CACHE_SHIFT;
+
+ if (print_header) {
+ print_header = false;
+ cpu_fprintf(f, "Way %u (%d %s)\n", wi, sz, sz_text);
+ cpu_fprintf(f,
+ "\tVaddr Paddr ASID Attr RWX Cache\n"
+ "\t---------- ---------- ---- ---- --- -------\n");
+ }
+ cpu_fprintf(f,
+ "\t0x%08x 0x%08x 0x%02x 0x%02x %c%c%c %-7s\n",
+ entry->vaddr,
+ entry->paddr,
+ entry->asid,
+ entry->attr,
+ (access & PAGE_READ) ? 'R' : '-',
+ (access & PAGE_WRITE) ? 'W' : '-',
+ (access & PAGE_EXEC) ? 'X' : '-',
+ cache_text[cache_idx] ? cache_text[cache_idx] :
+ "Invalid");
+ }
+ }
+ }
+}
+
+void dump_mmu(FILE *f, fprintf_function cpu_fprintf, CPUXtensaState *env)
+{
+ if (xtensa_option_bits_enabled(env->config,
+ XTENSA_OPTION_BIT(XTENSA_OPTION_REGION_PROTECTION) |
+ XTENSA_OPTION_BIT(XTENSA_OPTION_REGION_TRANSLATION) |
+ XTENSA_OPTION_BIT(XTENSA_OPTION_MMU))) {
+
+ cpu_fprintf(f, "ITLB:\n");
+ dump_tlb(f, cpu_fprintf, env, false);
+ cpu_fprintf(f, "\nDTLB:\n");
+ dump_tlb(f, cpu_fprintf, env, true);
+ } else {
+ cpu_fprintf(f, "No TLB for this CPU core\n");
+ }
+}
Code Review / kvmfornfv.git / blobdiff