#ifdef DEBUG_MMU
# define LOG_MMU(...) qemu_log(__VA_ARGS__)
-# define LOG_MMU_STATE(env) log_cpu_state((env), 0)
+# define LOG_MMU_STATE(cpu) log_cpu_state((cpu), 0)
#else
# define LOG_MMU(...) do { } while (0)
-# define LOG_MMU_STATE(...) do { } while (0)
+# define LOG_MMU_STATE(cpu) do { } while (0)
#endif
#ifdef DEBUG_SOFTWARE_TLB
/*****************************************************************************/
/* PowerPC MMU emulation */
-#if defined(CONFIG_USER_ONLY)
-int cpu_ppc_handle_mmu_fault(CPUPPCState *env, target_ulong address, int rw,
- int mmu_idx)
-{
- int exception, error_code;
- if (rw == 2) {
- exception = POWERPC_EXCP_ISI;
- error_code = 0x40000000;
- } else {
- exception = POWERPC_EXCP_DSI;
- error_code = 0x40000000;
- if (rw) {
- error_code |= 0x02000000;
- }
- env->spr[SPR_DAR] = address;
- env->spr[SPR_DSISR] = error_code;
- }
- env->exception_index = exception;
- env->error_code = error_code;
-
- return 1;
-}
+/* 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 */
+};
-#else
/* Common routines used by software and hardware TLBs emulation */
static inline int pte_is_valid(target_ulong pte0)
{
*protp = prot;
}
-static inline void bat_601_size_prot(CPUPPCState *env, target_ulong *blp,
- int *validp, int *protp,
- target_ulong *BATu, target_ulong *BATl)
-{
- target_ulong bl;
- int key, pp, valid, prot;
-
- bl = (*BATl & 0x0000003F) << 17;
- LOG_BATS("b %02x ==> bl " TARGET_FMT_lx " msk " TARGET_FMT_lx "\n",
- (uint8_t)(*BATl & 0x0000003F), bl, ~bl);
- prot = 0;
- valid = (*BATl >> 6) & 1;
- if (valid) {
- pp = *BATu & 0x00000003;
- if (msr_pr == 0) {
- key = (*BATu >> 3) & 1;
- } else {
- key = (*BATu >> 2) & 1;
- }
- prot = pp_check(key, pp, 0);
- }
- *blp = bl;
- *validp = valid;
- *protp = prot;
-}
-
-int get_bat(CPUPPCState *env, mmu_ctx_t *ctx,
- target_ulong virtual, int rw, int type)
+static int get_bat_6xx_tlb(CPUPPCState *env, mmu_ctx_t *ctx,
+ target_ulong virtual, int rw, int type)
{
target_ulong *BATlt, *BATut, *BATu, *BATl;
target_ulong BEPIl, BEPIu, bl;
BATl = &BATlt[i];
BEPIu = *BATu & 0xF0000000;
BEPIl = *BATu & 0x0FFE0000;
- if (unlikely(env->mmu_model == POWERPC_MMU_601)) {
- bat_601_size_prot(env, &bl, &valid, &prot, BATu, BATl);
- } else {
- bat_size_prot(env, &bl, &valid, &prot, BATu, BATl);
- }
+ bat_size_prot(env, &bl, &valid, &prot, BATu, BATl);
LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx
" BATl " TARGET_FMT_lx "\n", __func__,
type == ACCESS_CODE ? 'I' : 'D', i, virtual, *BATu, *BATl);
}
}
+static void mmu6xx_dump_BATs(FILE *f, fprintf_function cpu_fprintf,
+ CPUPPCState *env, int type)
+{
+ target_ulong *BATlt, *BATut, *BATu, *BATl;
+ target_ulong BEPIl, BEPIu, bl;
+ int i;
+
+ switch (type) {
+ case ACCESS_CODE:
+ BATlt = env->IBAT[1];
+ BATut = env->IBAT[0];
+ break;
+ default:
+ BATlt = env->DBAT[1];
+ BATut = env->DBAT[0];
+ break;
+ }
+
+ for (i = 0; i < env->nb_BATs; i++) {
+ BATu = &BATut[i];
+ BATl = &BATlt[i];
+ BEPIu = *BATu & 0xF0000000;
+ BEPIl = *BATu & 0x0FFE0000;
+ bl = (*BATu & 0x00001FFC) << 15;
+ cpu_fprintf(f, "%s BAT%d BATu " TARGET_FMT_lx
+ " BATl " TARGET_FMT_lx "\n\t" TARGET_FMT_lx " "
+ TARGET_FMT_lx " " TARGET_FMT_lx "\n",
+ type == ACCESS_CODE ? "code" : "data", i,
+ *BATu, *BATl, BEPIu, BEPIl, bl);
+ }
+}
+
+static void mmu6xx_dump_mmu(FILE *f, fprintf_function cpu_fprintf,
+ CPUPPCState *env)
+{
+ ppc6xx_tlb_t *tlb;
+ target_ulong sr;
+ int type, way, entry, i;
+
+ cpu_fprintf(f, "HTAB base = 0x%"HWADDR_PRIx"\n", env->htab_base);
+ cpu_fprintf(f, "HTAB mask = 0x%"HWADDR_PRIx"\n", env->htab_mask);
+
+ cpu_fprintf(f, "\nSegment registers:\n");
+ for (i = 0; i < 32; i++) {
+ sr = env->sr[i];
+ if (sr & 0x80000000) {
+ cpu_fprintf(f, "%02d T=%d Ks=%d Kp=%d BUID=0x%03x "
+ "CNTLR_SPEC=0x%05x\n", i,
+ sr & 0x80000000 ? 1 : 0, sr & 0x40000000 ? 1 : 0,
+ sr & 0x20000000 ? 1 : 0, (uint32_t)((sr >> 20) & 0x1FF),
+ (uint32_t)(sr & 0xFFFFF));
+ } else {
+ cpu_fprintf(f, "%02d T=%d Ks=%d Kp=%d N=%d VSID=0x%06x\n", i,
+ sr & 0x80000000 ? 1 : 0, sr & 0x40000000 ? 1 : 0,
+ sr & 0x20000000 ? 1 : 0, sr & 0x10000000 ? 1 : 0,
+ (uint32_t)(sr & 0x00FFFFFF));
+ }
+ }
+
+ cpu_fprintf(f, "\nBATs:\n");
+ mmu6xx_dump_BATs(f, cpu_fprintf, env, ACCESS_INT);
+ mmu6xx_dump_BATs(f, cpu_fprintf, env, ACCESS_CODE);
+
+ if (env->id_tlbs != 1) {
+ cpu_fprintf(f, "ERROR: 6xx MMU should have separated TLB"
+ " for code and data\n");
+ }
+
+ cpu_fprintf(f, "\nTLBs [EPN EPN + SIZE]\n");
+
+ for (type = 0; type < 2; type++) {
+ for (way = 0; way < env->nb_ways; way++) {
+ for (entry = env->nb_tlb * type + env->tlb_per_way * way;
+ entry < (env->nb_tlb * type + env->tlb_per_way * (way + 1));
+ entry++) {
+
+ tlb = &env->tlb.tlb6[entry];
+ cpu_fprintf(f, "%s TLB %02d/%02d way:%d %s ["
+ TARGET_FMT_lx " " TARGET_FMT_lx "]\n",
+ type ? "code" : "data", entry % env->nb_tlb,
+ env->nb_tlb, way,
+ pte_is_valid(tlb->pte0) ? "valid" : "inval",
+ tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE);
+ }
+ }
+ }
+}
+
void dump_mmu(FILE *f, fprintf_function cpu_fprintf, CPUPPCState *env)
{
switch (env->mmu_model) {
case POWERPC_MMU_BOOKE206:
mmubooke206_dump_mmu(f, cpu_fprintf, env);
break;
+ case POWERPC_MMU_SOFT_6xx:
+ case POWERPC_MMU_SOFT_74xx:
+ mmu6xx_dump_mmu(f, cpu_fprintf, env);
+ break;
#if defined(TARGET_PPC64)
case POWERPC_MMU_64B:
case POWERPC_MMU_2_06:
+ case POWERPC_MMU_2_06a:
case POWERPC_MMU_2_06d:
dump_slb(f, cpu_fprintf, env);
break;
} else {
/* Try to find a BAT */
if (env->nb_BATs != 0) {
- ret = get_bat(env, ctx, eaddr, rw, access_type);
+ ret = get_bat_6xx_tlb(env, ctx, eaddr, rw, access_type);
}
if (ret < 0) {
/* We didn't match any BAT entry or don't have BATs */
return ret;
}
-hwaddr cpu_get_phys_page_debug(CPUPPCState *env, target_ulong addr)
+hwaddr ppc_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
{
+ PowerPCCPU *cpu = POWERPC_CPU(cs);
+ CPUPPCState *env = &cpu->env;
mmu_ctx_t ctx;
switch (env->mmu_model) {
#if defined(TARGET_PPC64)
case POWERPC_MMU_64B:
case POWERPC_MMU_2_06:
+ case POWERPC_MMU_2_06a:
case POWERPC_MMU_2_06d:
return ppc_hash64_get_phys_page_debug(env, addr);
#endif
}
if (unlikely(get_physical_address(env, &ctx, addr, 0, ACCESS_INT) != 0)) {
- return -1;
+
+ /* Some MMUs have separate TLBs for code and data. If we only try an
+ * ACCESS_INT, we may not be able to read instructions mapped by code
+ * TLBs, so we also try a ACCESS_CODE.
+ */
+ if (unlikely(get_physical_address(env, &ctx, addr, 0,
+ ACCESS_CODE) != 0)) {
+ return -1;
+ }
}
return ctx.raddr & TARGET_PAGE_MASK;
}
/* Perform address translation */
-int cpu_ppc_handle_mmu_fault(CPUPPCState *env, target_ulong address, int rw,
- int mmu_idx)
+static int cpu_ppc_handle_mmu_fault(CPUPPCState *env, target_ulong address,
+ int rw, int mmu_idx)
{
mmu_ctx_t ctx;
int access_type;
int ret = 0;
- switch (env->mmu_model) {
-#if defined(TARGET_PPC64)
- case POWERPC_MMU_64B:
- case POWERPC_MMU_2_06:
- case POWERPC_MMU_2_06d:
- return ppc_hash64_handle_mmu_fault(env, address, rw, mmu_idx);
-#endif
-
- case POWERPC_MMU_32B:
- case POWERPC_MMU_601:
- return ppc_hash32_handle_mmu_fault(env, address, rw, mmu_idx);
-
- default:
- ; /* Otherwise fall through to the general code below */
- }
-
if (rw == 2) {
/* code access */
rw = 0;
mmu_idx, TARGET_PAGE_SIZE);
ret = 0;
} else if (ret < 0) {
- LOG_MMU_STATE(env);
+ LOG_MMU_STATE(CPU(ppc_env_get_cpu(env)));
if (access_type == ACCESS_CODE) {
switch (ret) {
case -1:
#if defined(TARGET_PPC64)
case POWERPC_MMU_64B:
case POWERPC_MMU_2_06:
+ case POWERPC_MMU_2_06a:
case POWERPC_MMU_2_06d:
#endif /* defined(TARGET_PPC64) */
tlb_flush(env, 1);
#if defined(TARGET_PPC64)
case POWERPC_MMU_64B:
case POWERPC_MMU_2_06:
+ case POWERPC_MMU_2_06a:
case POWERPC_MMU_2_06d:
/* tlbie invalidate TLBs for all segments */
/* XXX: given the fact that there are too many segments to invalidate,
/* ESID = srnum */
rb |= ((uint32_t)srnum & 0xf) << 28;
/* Set the valid bit */
- rb |= 1 << 27;
+ rb |= SLB_ESID_V;
/* Index = ESID */
rb |= (uint32_t)srnum;
#endif
}
}
-#endif /* !defined(CONFIG_USER_ONLY) */
-#if !defined(CONFIG_USER_ONLY)
/* TLB management */
void helper_tlbia(CPUPPCState *env)
{
booke206_flush_tlb(env, flags, 1);
}
-#endif
+
+
+/*****************************************************************************/
+
+#include "exec/softmmu_exec.h"
+
+#define MMUSUFFIX _mmu
+
+#define SHIFT 0
+#include "exec/softmmu_template.h"
+
+#define SHIFT 1
+#include "exec/softmmu_template.h"
+
+#define SHIFT 2
+#include "exec/softmmu_template.h"
+
+#define SHIFT 3
+#include "exec/softmmu_template.h"
+
+/* try to fill the TLB and return an exception if error. If retaddr is
+ NULL, it means that the function was called in C code (i.e. not
+ from generated code or from helper.c) */
+/* XXX: fix it to restore all registers */
+void tlb_fill(CPUPPCState *env, target_ulong addr, int is_write, int mmu_idx,
+ uintptr_t retaddr)
+{
+ CPUState *cpu = CPU(ppc_env_get_cpu(env));
+ PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu);
+ int ret;
+
+ if (pcc->handle_mmu_fault) {
+ ret = pcc->handle_mmu_fault(env, addr, is_write, mmu_idx);
+ } else {
+ ret = cpu_ppc_handle_mmu_fault(env, addr, is_write, mmu_idx);
+ }
+ if (unlikely(ret != 0)) {
+ if (likely(retaddr)) {
+ /* now we have a real cpu fault */
+ cpu_restore_state(env, retaddr);
+ }
+ helper_raise_exception_err(env, env->exception_index, env->error_code);
+ }
+}
projects / qemu.git / blobdiff