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qemu-e2k/target/sparc/ldst_helper.c
Peter Maydell f8c3db33a5 target/sparc: Switch to do_transaction_failed() hook 
Switch the SPARC target from the old unassigned_access hook to the
new do_transaction_failed hook.

This will cause the "if transaction failed" code paths added in
the previous commits to become active if the access is to an
unassigned address. In particular we'll now handle bus errors
during page table walks correctly (generating a translation
error with the right kind of fault status).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-id: 20190801183012.17564-8-peter.maydell@linaro.org
2019-09-17 12:01:00 +01:00

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/*
* Helpers for loads and stores
*
* Copyright (c) 2003-2005 Fabrice Bellard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "cpu.h"
#include "tcg.h"
#include "exec/helper-proto.h"
#include "exec/exec-all.h"
#include "exec/cpu_ldst.h"
#include "asi.h"
//#define DEBUG_MMU
//#define DEBUG_MXCC
//#define DEBUG_UNALIGNED
//#define DEBUG_UNASSIGNED
//#define DEBUG_ASI
//#define DEBUG_CACHE_CONTROL
#ifdef DEBUG_MMU
#define DPRINTF_MMU(fmt, ...) \
do { printf("MMU: " fmt , ## __VA_ARGS__); } while (0)
#else
#define DPRINTF_MMU(fmt, ...) do {} while (0)
#endif
#ifdef DEBUG_MXCC
#define DPRINTF_MXCC(fmt, ...) \
do { printf("MXCC: " fmt , ## __VA_ARGS__); } while (0)
#else
#define DPRINTF_MXCC(fmt, ...) do {} while (0)
#endif
#ifdef DEBUG_ASI
#define DPRINTF_ASI(fmt, ...) \
do { printf("ASI: " fmt , ## __VA_ARGS__); } while (0)
#endif
#ifdef DEBUG_CACHE_CONTROL
#define DPRINTF_CACHE_CONTROL(fmt, ...) \
do { printf("CACHE_CONTROL: " fmt , ## __VA_ARGS__); } while (0)
#else
#define DPRINTF_CACHE_CONTROL(fmt, ...) do {} while (0)
#endif
#ifdef TARGET_SPARC64
#ifndef TARGET_ABI32
#define AM_CHECK(env1) ((env1)->pstate & PS_AM)
#else
#define AM_CHECK(env1) (1)
#endif
#endif
#define QT0 (env->qt0)
#define QT1 (env->qt1)
#if defined(TARGET_SPARC64) && !defined(CONFIG_USER_ONLY)
/* Calculates TSB pointer value for fault page size
* UltraSPARC IIi has fixed sizes (8k or 64k) for the page pointers
* UA2005 holds the page size configuration in mmu_ctx registers */
static uint64_t ultrasparc_tsb_pointer(CPUSPARCState *env,
const SparcV9MMU *mmu, const int idx)
{
uint64_t tsb_register;
int page_size;
if (cpu_has_hypervisor(env)) {
int tsb_index = 0;
int ctx = mmu->tag_access & 0x1fffULL;
uint64_t ctx_register = mmu->sun4v_ctx_config[ctx ? 1 : 0];
tsb_index = idx;
tsb_index |= ctx ? 2 : 0;
page_size = idx ? ctx_register >> 8 : ctx_register;
page_size &= 7;
tsb_register = mmu->sun4v_tsb_pointers[tsb_index];
} else {
page_size = idx;
tsb_register = mmu->tsb;
}
int tsb_split = (tsb_register & 0x1000ULL) ? 1 : 0;
int tsb_size = tsb_register & 0xf;
uint64_t tsb_base_mask = (~0x1fffULL) << tsb_size;
/* move va bits to correct position,
* the context bits will be masked out later */
uint64_t va = mmu->tag_access >> (3 * page_size + 9);
/* calculate tsb_base mask and adjust va if split is in use */
if (tsb_split) {
if (idx == 0) {
va &= ~(1ULL << (13 + tsb_size));
} else {
va |= (1ULL << (13 + tsb_size));
}
tsb_base_mask <<= 1;
}
return ((tsb_register & tsb_base_mask) | (va & ~tsb_base_mask)) & ~0xfULL;
}
/* Calculates tag target register value by reordering bits
in tag access register */
static uint64_t ultrasparc_tag_target(uint64_t tag_access_register)
{
return ((tag_access_register & 0x1fff) << 48) | (tag_access_register >> 22);
}
static void replace_tlb_entry(SparcTLBEntry *tlb,
uint64_t tlb_tag, uint64_t tlb_tte,
CPUSPARCState *env)
{
target_ulong mask, size, va, offset;
/* flush page range if translation is valid */
if (TTE_IS_VALID(tlb->tte)) {
CPUState *cs = env_cpu(env);
size = 8192ULL << 3 * TTE_PGSIZE(tlb->tte);
mask = 1ULL + ~size;
va = tlb->tag & mask;
for (offset = 0; offset < size; offset += TARGET_PAGE_SIZE) {
tlb_flush_page(cs, va + offset);
}
}
tlb->tag = tlb_tag;
tlb->tte = tlb_tte;
}
static void demap_tlb(SparcTLBEntry *tlb, target_ulong demap_addr,
const char *strmmu, CPUSPARCState *env1)
{
unsigned int i;
target_ulong mask;
uint64_t context;
int is_demap_context = (demap_addr >> 6) & 1;
/* demap context */
switch ((demap_addr >> 4) & 3) {
case 0: /* primary */
context = env1->dmmu.mmu_primary_context;
break;
case 1: /* secondary */
context = env1->dmmu.mmu_secondary_context;
break;
case 2: /* nucleus */
context = 0;
break;
case 3: /* reserved */
default:
return;
}
for (i = 0; i < 64; i++) {
if (TTE_IS_VALID(tlb[i].tte)) {
if (is_demap_context) {
/* will remove non-global entries matching context value */
if (TTE_IS_GLOBAL(tlb[i].tte) ||
!tlb_compare_context(&tlb[i], context)) {
continue;
}
} else {
/* demap page
will remove any entry matching VA */
mask = 0xffffffffffffe000ULL;
mask <<= 3 * ((tlb[i].tte >> 61) & 3);
if (!compare_masked(demap_addr, tlb[i].tag, mask)) {
continue;
}
/* entry should be global or matching context value */
if (!TTE_IS_GLOBAL(tlb[i].tte) &&
!tlb_compare_context(&tlb[i], context)) {
continue;
}
}
replace_tlb_entry(&tlb[i], 0, 0, env1);
#ifdef DEBUG_MMU
DPRINTF_MMU("%s demap invalidated entry [%02u]\n", strmmu, i);
dump_mmu(env1);
#endif
}
}
}
static uint64_t sun4v_tte_to_sun4u(CPUSPARCState *env, uint64_t tag,
uint64_t sun4v_tte)
{
uint64_t sun4u_tte;
if (!(cpu_has_hypervisor(env) && (tag & TLB_UST1_IS_SUN4V_BIT))) {
/* is already in the sun4u format */
return sun4v_tte;
}
sun4u_tte = TTE_PA(sun4v_tte) | (sun4v_tte & TTE_VALID_BIT);
sun4u_tte |= (sun4v_tte & 3ULL) << 61; /* TTE_PGSIZE */
sun4u_tte |= CONVERT_BIT(sun4v_tte, TTE_NFO_BIT_UA2005, TTE_NFO_BIT);
sun4u_tte |= CONVERT_BIT(sun4v_tte, TTE_USED_BIT_UA2005, TTE_USED_BIT);
sun4u_tte |= CONVERT_BIT(sun4v_tte, TTE_W_OK_BIT_UA2005, TTE_W_OK_BIT);
sun4u_tte |= CONVERT_BIT(sun4v_tte, TTE_SIDEEFFECT_BIT_UA2005,
TTE_SIDEEFFECT_BIT);
sun4u_tte |= CONVERT_BIT(sun4v_tte, TTE_PRIV_BIT_UA2005, TTE_PRIV_BIT);
sun4u_tte |= CONVERT_BIT(sun4v_tte, TTE_LOCKED_BIT_UA2005, TTE_LOCKED_BIT);
return sun4u_tte;
}
static void replace_tlb_1bit_lru(SparcTLBEntry *tlb,
uint64_t tlb_tag, uint64_t tlb_tte,
const char *strmmu, CPUSPARCState *env1,
uint64_t addr)
{
unsigned int i, replace_used;
tlb_tte = sun4v_tte_to_sun4u(env1, addr, tlb_tte);
if (cpu_has_hypervisor(env1)) {
uint64_t new_vaddr = tlb_tag & ~0x1fffULL;
uint64_t new_size = 8192ULL << 3 * TTE_PGSIZE(tlb_tte);
uint32_t new_ctx = tlb_tag & 0x1fffU;
for (i = 0; i < 64; i++) {
uint32_t ctx = tlb[i].tag & 0x1fffU;
/* check if new mapping overlaps an existing one */
if (new_ctx == ctx) {
uint64_t vaddr = tlb[i].tag & ~0x1fffULL;
uint64_t size = 8192ULL << 3 * TTE_PGSIZE(tlb[i].tte);
if (new_vaddr == vaddr
|| (new_vaddr < vaddr + size
&& vaddr < new_vaddr + new_size)) {
DPRINTF_MMU("auto demap entry [%d] %lx->%lx\n", i, vaddr,
new_vaddr);
replace_tlb_entry(&tlb[i], tlb_tag, tlb_tte, env1);
return;
}
}
}
}
/* Try replacing invalid entry */
for (i = 0; i < 64; i++) {
if (!TTE_IS_VALID(tlb[i].tte)) {
replace_tlb_entry(&tlb[i], tlb_tag, tlb_tte, env1);
#ifdef DEBUG_MMU
DPRINTF_MMU("%s lru replaced invalid entry [%i]\n", strmmu, i);
dump_mmu(env1);
#endif
return;
}
}
/* All entries are valid, try replacing unlocked entry */
for (replace_used = 0; replace_used < 2; ++replace_used) {
/* Used entries are not replaced on first pass */
for (i = 0; i < 64; i++) {
if (!TTE_IS_LOCKED(tlb[i].tte) && !TTE_IS_USED(tlb[i].tte)) {
replace_tlb_entry(&tlb[i], tlb_tag, tlb_tte, env1);
#ifdef DEBUG_MMU
DPRINTF_MMU("%s lru replaced unlocked %s entry [%i]\n",
strmmu, (replace_used ? "used" : "unused"), i);
dump_mmu(env1);
#endif
return;
}
}
/* Now reset used bit and search for unused entries again */
for (i = 0; i < 64; i++) {
TTE_SET_UNUSED(tlb[i].tte);
}
}
#ifdef DEBUG_MMU
DPRINTF_MMU("%s lru replacement: no free entries available, "
"replacing the last one\n", strmmu);
#endif
/* corner case: the last entry is replaced anyway */
replace_tlb_entry(&tlb[63], tlb_tag, tlb_tte, env1);
}
#endif
#ifdef TARGET_SPARC64
/* returns true if access using this ASI is to have address translated by MMU
otherwise access is to raw physical address */
/* TODO: check sparc32 bits */
static inline int is_translating_asi(int asi)
{
/* Ultrasparc IIi translating asi
- note this list is defined by cpu implementation
*/
switch (asi) {
case 0x04 ... 0x11:
case 0x16 ... 0x19:
case 0x1E ... 0x1F:
case 0x24 ... 0x2C:
case 0x70 ... 0x73:
case 0x78 ... 0x79:
case 0x80 ... 0xFF:
return 1;
default:
return 0;
}
}
static inline target_ulong address_mask(CPUSPARCState *env1, target_ulong addr)
{
if (AM_CHECK(env1)) {
addr &= 0xffffffffULL;
}
return addr;
}
static inline target_ulong asi_address_mask(CPUSPARCState *env,
int asi, target_ulong addr)
{
if (is_translating_asi(asi)) {
addr = address_mask(env, addr);
}
return addr;
}
#ifndef CONFIG_USER_ONLY
static inline void do_check_asi(CPUSPARCState *env, int asi, uintptr_t ra)
{
/* ASIs >= 0x80 are user mode.
* ASIs >= 0x30 are hyper mode (or super if hyper is not available).
* ASIs <= 0x2f are super mode.
*/
if (asi < 0x80
&& !cpu_hypervisor_mode(env)
&& (!cpu_supervisor_mode(env)
|| (asi >= 0x30 && cpu_has_hypervisor(env)))) {
cpu_raise_exception_ra(env, TT_PRIV_ACT, ra);
}
}
#endif /* !CONFIG_USER_ONLY */
#endif
static void do_check_align(CPUSPARCState *env, target_ulong addr,
uint32_t align, uintptr_t ra)
{
if (addr & align) {
#ifdef DEBUG_UNALIGNED
printf("Unaligned access to 0x" TARGET_FMT_lx " from 0x" TARGET_FMT_lx
"\n", addr, env->pc);
#endif
cpu_raise_exception_ra(env, TT_UNALIGNED, ra);
}
}
void helper_check_align(CPUSPARCState *env, target_ulong addr, uint32_t align)
{
do_check_align(env, addr, align, GETPC());
}
#if !defined(TARGET_SPARC64) && !defined(CONFIG_USER_ONLY) && \
defined(DEBUG_MXCC)
static void dump_mxcc(CPUSPARCState *env)
{
printf("mxccdata: %016" PRIx64 " %016" PRIx64 " %016" PRIx64 " %016" PRIx64
"\n",
env->mxccdata[0], env->mxccdata[1],
env->mxccdata[2], env->mxccdata[3]);
printf("mxccregs: %016" PRIx64 " %016" PRIx64 " %016" PRIx64 " %016" PRIx64
"\n"
" %016" PRIx64 " %016" PRIx64 " %016" PRIx64 " %016" PRIx64
"\n",
env->mxccregs[0], env->mxccregs[1],
env->mxccregs[2], env->mxccregs[3],
env->mxccregs[4], env->mxccregs[5],
env->mxccregs[6], env->mxccregs[7]);
}
#endif
#if (defined(TARGET_SPARC64) || !defined(CONFIG_USER_ONLY)) \
&& defined(DEBUG_ASI)
static void dump_asi(const char *txt, target_ulong addr, int asi, int size,
uint64_t r1)
{
switch (size) {
case 1:
DPRINTF_ASI("%s "TARGET_FMT_lx " asi 0x%02x = %02" PRIx64 "\n", txt,
addr, asi, r1 & 0xff);
break;
case 2:
DPRINTF_ASI("%s "TARGET_FMT_lx " asi 0x%02x = %04" PRIx64 "\n", txt,
addr, asi, r1 & 0xffff);
break;
case 4:
DPRINTF_ASI("%s "TARGET_FMT_lx " asi 0x%02x = %08" PRIx64 "\n", txt,
addr, asi, r1 & 0xffffffff);
break;
case 8:
DPRINTF_ASI("%s "TARGET_FMT_lx " asi 0x%02x = %016" PRIx64 "\n", txt,
addr, asi, r1);
break;
}
}
#endif
#ifndef CONFIG_USER_ONLY
#ifndef TARGET_SPARC64
static void sparc_raise_mmu_fault(CPUState *cs, hwaddr addr,
bool is_write, bool is_exec, int is_asi,
unsigned size, uintptr_t retaddr)
{
SPARCCPU *cpu = SPARC_CPU(cs);
CPUSPARCState *env = &cpu->env;
int fault_type;
#ifdef DEBUG_UNASSIGNED
if (is_asi) {
printf("Unassigned mem %s access of %d byte%s to " TARGET_FMT_plx
" asi 0x%02x from " TARGET_FMT_lx "\n",
is_exec ? "exec" : is_write ? "write" : "read", size,
size == 1 ? "" : "s", addr, is_asi, env->pc);
} else {
printf("Unassigned mem %s access of %d byte%s to " TARGET_FMT_plx
" from " TARGET_FMT_lx "\n",
is_exec ? "exec" : is_write ? "write" : "read", size,
size == 1 ? "" : "s", addr, env->pc);
}
#endif
/* Don't overwrite translation and access faults */
fault_type = (env->mmuregs[3] & 0x1c) >> 2;
if ((fault_type > 4) || (fault_type == 0)) {
env->mmuregs[3] = 0; /* Fault status register */
if (is_asi) {
env->mmuregs[3] |= 1 << 16;
}
if (env->psrs) {
env->mmuregs[3] |= 1 << 5;
}
if (is_exec) {
env->mmuregs[3] |= 1 << 6;
}
if (is_write) {
env->mmuregs[3] |= 1 << 7;
}
env->mmuregs[3] |= (5 << 2) | 2;
/* SuperSPARC will never place instruction fault addresses in the FAR */
if (!is_exec) {
env->mmuregs[4] = addr; /* Fault address register */
}
}
/* overflow (same type fault was not read before another fault) */
if (fault_type == ((env->mmuregs[3] & 0x1c)) >> 2) {
env->mmuregs[3] |= 1;
}
if ((env->mmuregs[0] & MMU_E) && !(env->mmuregs[0] & MMU_NF)) {
int tt = is_exec ? TT_CODE_ACCESS : TT_DATA_ACCESS;
cpu_raise_exception_ra(env, tt, retaddr);
}
/*
* flush neverland mappings created during no-fault mode,
* so the sequential MMU faults report proper fault types
*/
if (env->mmuregs[0] & MMU_NF) {
tlb_flush(cs);
}
}
#else
static void sparc_raise_mmu_fault(CPUState *cs, hwaddr addr,
bool is_write, bool is_exec, int is_asi,
unsigned size, uintptr_t retaddr)
{
SPARCCPU *cpu = SPARC_CPU(cs);
CPUSPARCState *env = &cpu->env;
#ifdef DEBUG_UNASSIGNED
printf("Unassigned mem access to " TARGET_FMT_plx " from " TARGET_FMT_lx
"\n", addr, env->pc);
#endif
if (is_exec) { /* XXX has_hypervisor */
if (env->lsu & (IMMU_E)) {
cpu_raise_exception_ra(env, TT_CODE_ACCESS, retaddr);
} else if (cpu_has_hypervisor(env) && !(env->hpstate & HS_PRIV)) {
cpu_raise_exception_ra(env, TT_INSN_REAL_TRANSLATION_MISS, retaddr);
}
} else {
if (env->lsu & (DMMU_E)) {
cpu_raise_exception_ra(env, TT_DATA_ACCESS, retaddr);
} else if (cpu_has_hypervisor(env) && !(env->hpstate & HS_PRIV)) {
cpu_raise_exception_ra(env, TT_DATA_REAL_TRANSLATION_MISS, retaddr);
}
}
}
#endif
#endif
#ifndef TARGET_SPARC64
#ifndef CONFIG_USER_ONLY
/* Leon3 cache control */
static void leon3_cache_control_st(CPUSPARCState *env, target_ulong addr,
uint64_t val, int size)
{
DPRINTF_CACHE_CONTROL("st addr:%08x, val:%" PRIx64 ", size:%d\n",
addr, val, size);
if (size != 4) {
DPRINTF_CACHE_CONTROL("32bits only\n");
return;
}
switch (addr) {
case 0x00: /* Cache control */
/* These values must always be read as zeros */
val &= ~CACHE_CTRL_FD;
val &= ~CACHE_CTRL_FI;
val &= ~CACHE_CTRL_IB;
val &= ~CACHE_CTRL_IP;
val &= ~CACHE_CTRL_DP;
env->cache_control = val;
break;
case 0x04: /* Instruction cache configuration */
case 0x08: /* Data cache configuration */
/* Read Only */
break;
default:
DPRINTF_CACHE_CONTROL("write unknown register %08x\n", addr);
break;
};
}
static uint64_t leon3_cache_control_ld(CPUSPARCState *env, target_ulong addr,
int size)
{
uint64_t ret = 0;
if (size != 4) {
DPRINTF_CACHE_CONTROL("32bits only\n");
return 0;
}
switch (addr) {
case 0x00: /* Cache control */
ret = env->cache_control;
break;
/* Configuration registers are read and only always keep those
predefined values */
case 0x04: /* Instruction cache configuration */
ret = 0x10220000;
break;
case 0x08: /* Data cache configuration */
ret = 0x18220000;
break;
default:
DPRINTF_CACHE_CONTROL("read unknown register %08x\n", addr);
break;
};
DPRINTF_CACHE_CONTROL("ld addr:%08x, ret:0x%" PRIx64 ", size:%d\n",
addr, ret, size);
return ret;
}
uint64_t helper_ld_asi(CPUSPARCState *env, target_ulong addr,
int asi, uint32_t memop)
{
int size = 1 << (memop & MO_SIZE);
int sign = memop & MO_SIGN;
CPUState *cs = env_cpu(env);
uint64_t ret = 0;
#if defined(DEBUG_MXCC) || defined(DEBUG_ASI)
uint32_t last_addr = addr;
#endif
do_check_align(env, addr, size - 1, GETPC());
switch (asi) {
case ASI_M_MXCC: /* SuperSparc MXCC registers, or... */
/* case ASI_LEON_CACHEREGS: Leon3 cache control */
switch (addr) {
case 0x00: /* Leon3 Cache Control */
case 0x08: /* Leon3 Instruction Cache config */
case 0x0C: /* Leon3 Date Cache config */
if (env->def.features & CPU_FEATURE_CACHE_CTRL) {
ret = leon3_cache_control_ld(env, addr, size);
}
break;
case 0x01c00a00: /* MXCC control register */
if (size == 8) {
ret = env->mxccregs[3];
} else {
qemu_log_mask(LOG_UNIMP,
"%08x: unimplemented access size: %d\n", addr,
size);
}
break;
case 0x01c00a04: /* MXCC control register */
if (size == 4) {
ret = env->mxccregs[3];
} else {
qemu_log_mask(LOG_UNIMP,
"%08x: unimplemented access size: %d\n", addr,
size);
}
break;
case 0x01c00c00: /* Module reset register */
if (size == 8) {
ret = env->mxccregs[5];
/* should we do something here? */
} else {
qemu_log_mask(LOG_UNIMP,
"%08x: unimplemented access size: %d\n", addr,
size);
}
break;
case 0x01c00f00: /* MBus port address register */
if (size == 8) {
ret = env->mxccregs[7];
} else {
qemu_log_mask(LOG_UNIMP,
"%08x: unimplemented access size: %d\n", addr,
size);
}
break;
default:
qemu_log_mask(LOG_UNIMP,
"%08x: unimplemented address, size: %d\n", addr,
size);
break;
}
DPRINTF_MXCC("asi = %d, size = %d, sign = %d, "
"addr = %08x -> ret = %" PRIx64 ","
"addr = %08x\n", asi, size, sign, last_addr, ret, addr);
#ifdef DEBUG_MXCC
dump_mxcc(env);
#endif
break;
case ASI_M_FLUSH_PROBE: /* SuperSparc MMU probe */
case ASI_LEON_MMUFLUSH: /* LEON3 MMU probe */
{
int mmulev;
mmulev = (addr >> 8) & 15;
if (mmulev > 4) {
ret = 0;
} else {
ret = mmu_probe(env, addr, mmulev);
}
DPRINTF_MMU("mmu_probe: 0x%08x (lev %d) -> 0x%08" PRIx64 "\n",
addr, mmulev, ret);
}
break;
case ASI_M_MMUREGS: /* SuperSparc MMU regs */
case ASI_LEON_MMUREGS: /* LEON3 MMU regs */
{
int reg = (addr >> 8) & 0x1f;
ret = env->mmuregs[reg];
if (reg == 3) { /* Fault status cleared on read */
env->mmuregs[3] = 0;
} else if (reg == 0x13) { /* Fault status read */
ret = env->mmuregs[3];
} else if (reg == 0x14) { /* Fault address read */
ret = env->mmuregs[4];
}
DPRINTF_MMU("mmu_read: reg[%d] = 0x%08" PRIx64 "\n", reg, ret);
}
break;
case ASI_M_TLBDIAG: /* Turbosparc ITLB Diagnostic */
case ASI_M_DIAGS: /* Turbosparc DTLB Diagnostic */
case ASI_M_IODIAG: /* Turbosparc IOTLB Diagnostic */
break;
case ASI_KERNELTXT: /* Supervisor code access */
switch (size) {
case 1:
ret = cpu_ldub_code(env, addr);
break;
case 2:
ret = cpu_lduw_code(env, addr);
break;
default:
case 4:
ret = cpu_ldl_code(env, addr);
break;
case 8:
ret = cpu_ldq_code(env, addr);
break;
}
break;
case ASI_M_TXTC_TAG: /* SparcStation 5 I-cache tag */
case ASI_M_TXTC_DATA: /* SparcStation 5 I-cache data */
case ASI_M_DATAC_TAG: /* SparcStation 5 D-cache tag */
case ASI_M_DATAC_DATA: /* SparcStation 5 D-cache data */
break;
case 0x21 ... 0x2f: /* MMU passthrough, 0x100000000 to 0xfffffffff */
{
MemTxResult result;
hwaddr access_addr = (hwaddr)addr | ((hwaddr)(asi & 0xf) << 32);
switch (size) {
case 1:
ret = address_space_ldub(cs->as, access_addr,
MEMTXATTRS_UNSPECIFIED, &result);
break;
case 2:
ret = address_space_lduw(cs->as, access_addr,
MEMTXATTRS_UNSPECIFIED, &result);
break;
default:
case 4:
ret = address_space_ldl(cs->as, access_addr,
MEMTXATTRS_UNSPECIFIED, &result);
break;
case 8:
ret = address_space_ldq(cs->as, access_addr,
MEMTXATTRS_UNSPECIFIED, &result);
break;
}
if (result != MEMTX_OK) {
sparc_raise_mmu_fault(cs, access_addr, false, false, false,
size, GETPC());
}
break;
}
case 0x30: /* Turbosparc secondary cache diagnostic */
case 0x31: /* Turbosparc RAM snoop */
case 0x32: /* Turbosparc page table descriptor diagnostic */
case 0x39: /* data cache diagnostic register */
ret = 0;
break;
case 0x38: /* SuperSPARC MMU Breakpoint Control Registers */
{
int reg = (addr >> 8) & 3;
switch (reg) {
case 0: /* Breakpoint Value (Addr) */
ret = env->mmubpregs[reg];
break;
case 1: /* Breakpoint Mask */
ret = env->mmubpregs[reg];
break;
case 2: /* Breakpoint Control */
ret = env->mmubpregs[reg];
break;
case 3: /* Breakpoint Status */
ret = env->mmubpregs[reg];
env->mmubpregs[reg] = 0ULL;
break;
}
DPRINTF_MMU("read breakpoint reg[%d] 0x%016" PRIx64 "\n", reg,
ret);
}
break;
case 0x49: /* SuperSPARC MMU Counter Breakpoint Value */
ret = env->mmubpctrv;
break;
case 0x4a: /* SuperSPARC MMU Counter Breakpoint Control */
ret = env->mmubpctrc;
break;
case 0x4b: /* SuperSPARC MMU Counter Breakpoint Status */
ret = env->mmubpctrs;
break;
case 0x4c: /* SuperSPARC MMU Breakpoint Action */
ret = env->mmubpaction;
break;
case ASI_USERTXT: /* User code access, XXX */
default:
sparc_raise_mmu_fault(cs, addr, false, false, asi, size, GETPC());
ret = 0;
break;
case ASI_USERDATA: /* User data access */
case ASI_KERNELDATA: /* Supervisor data access */
case ASI_P: /* Implicit primary context data access (v9 only?) */
case ASI_M_BYPASS: /* MMU passthrough */
case ASI_LEON_BYPASS: /* LEON MMU passthrough */
/* These are always handled inline. */
g_assert_not_reached();
}
if (sign) {
switch (size) {
case 1:
ret = (int8_t) ret;
break;
case 2:
ret = (int16_t) ret;
break;
case 4:
ret = (int32_t) ret;
break;
default:
break;
}
}
#ifdef DEBUG_ASI
dump_asi("read ", last_addr, asi, size, ret);
#endif
return ret;
}
void helper_st_asi(CPUSPARCState *env, target_ulong addr, uint64_t val,
int asi, uint32_t memop)
{
int size = 1 << (memop & MO_SIZE);
CPUState *cs = env_cpu(env);
do_check_align(env, addr, size - 1, GETPC());
switch (asi) {
case ASI_M_MXCC: /* SuperSparc MXCC registers, or... */
/* case ASI_LEON_CACHEREGS: Leon3 cache control */
switch (addr) {
case 0x00: /* Leon3 Cache Control */
case 0x08: /* Leon3 Instruction Cache config */
case 0x0C: /* Leon3 Date Cache config */
if (env->def.features & CPU_FEATURE_CACHE_CTRL) {
leon3_cache_control_st(env, addr, val, size);
}
break;
case 0x01c00000: /* MXCC stream data register 0 */
if (size == 8) {
env->mxccdata[0] = val;
} else {
qemu_log_mask(LOG_UNIMP,
"%08x: unimplemented access size: %d\n", addr,
size);
}
break;
case 0x01c00008: /* MXCC stream data register 1 */
if (size == 8) {
env->mxccdata[1] = val;
} else {
qemu_log_mask(LOG_UNIMP,
"%08x: unimplemented access size: %d\n", addr,
size);
}
break;
case 0x01c00010: /* MXCC stream data register 2 */
if (size == 8) {
env->mxccdata[2] = val;
} else {
qemu_log_mask(LOG_UNIMP,
"%08x: unimplemented access size: %d\n", addr,
size);
}
break;
case 0x01c00018: /* MXCC stream data register 3 */
if (size == 8) {
env->mxccdata[3] = val;
} else {
qemu_log_mask(LOG_UNIMP,
"%08x: unimplemented access size: %d\n", addr,
size);
}
break;
case 0x01c00100: /* MXCC stream source */
{
int i;
if (size == 8) {
env->mxccregs[0] = val;
} else {
qemu_log_mask(LOG_UNIMP,
"%08x: unimplemented access size: %d\n", addr,
size);
}
for (i = 0; i < 4; i++) {
MemTxResult result;
hwaddr access_addr = (env->mxccregs[0] & 0xffffffffULL) + 8 * i;
env->mxccdata[i] = address_space_ldq(cs->as,
access_addr,
MEMTXATTRS_UNSPECIFIED,
&result);
if (result != MEMTX_OK) {
/* TODO: investigate whether this is the right behaviour */
sparc_raise_mmu_fault(cs, access_addr, false, false,
false, size, GETPC());
}
}
break;
}
case 0x01c00200: /* MXCC stream destination */
{
int i;
if (size == 8) {
env->mxccregs[1] = val;
} else {
qemu_log_mask(LOG_UNIMP,
"%08x: unimplemented access size: %d\n", addr,
size);
}
for (i = 0; i < 4; i++) {
MemTxResult result;
hwaddr access_addr = (env->mxccregs[1] & 0xffffffffULL) + 8 * i;
address_space_stq(cs->as, access_addr, env->mxccdata[i],
MEMTXATTRS_UNSPECIFIED, &result);
if (result != MEMTX_OK) {
/* TODO: investigate whether this is the right behaviour */
sparc_raise_mmu_fault(cs, access_addr, true, false,
false, size, GETPC());
}
}
break;
}
case 0x01c00a00: /* MXCC control register */
if (size == 8) {
env->mxccregs[3] = val;
} else {
qemu_log_mask(LOG_UNIMP,
"%08x: unimplemented access size: %d\n", addr,
size);
}
break;
case 0x01c00a04: /* MXCC control register */
if (size == 4) {
env->mxccregs[3] = (env->mxccregs[3] & 0xffffffff00000000ULL)
| val;
} else {
qemu_log_mask(LOG_UNIMP,
"%08x: unimplemented access size: %d\n", addr,
size);
}
break;
case 0x01c00e00: /* MXCC error register */
/* writing a 1 bit clears the error */
if (size == 8) {
env->mxccregs[6] &= ~val;
} else {
qemu_log_mask(LOG_UNIMP,
"%08x: unimplemented access size: %d\n", addr,
size);
}
break;
case 0x01c00f00: /* MBus port address register */
if (size == 8) {
env->mxccregs[7] = val;
} else {
qemu_log_mask(LOG_UNIMP,
"%08x: unimplemented access size: %d\n", addr,
size);
}
break;
default:
qemu_log_mask(LOG_UNIMP,
"%08x: unimplemented address, size: %d\n", addr,
size);
break;
}
DPRINTF_MXCC("asi = %d, size = %d, addr = %08x, val = %" PRIx64 "\n",
asi, size, addr, val);
#ifdef DEBUG_MXCC
dump_mxcc(env);
#endif
break;
case ASI_M_FLUSH_PROBE: /* SuperSparc MMU flush */
case ASI_LEON_MMUFLUSH: /* LEON3 MMU flush */
{
int mmulev;
mmulev = (addr >> 8) & 15;
DPRINTF_MMU("mmu flush level %d\n", mmulev);
switch (mmulev) {
case 0: /* flush page */
tlb_flush_page(cs, addr & 0xfffff000);
break;
case 1: /* flush segment (256k) */
case 2: /* flush region (16M) */
case 3: /* flush context (4G) */
case 4: /* flush entire */
tlb_flush(cs);
break;
default:
break;
}
#ifdef DEBUG_MMU
dump_mmu(env);
#endif
}
break;
case ASI_M_MMUREGS: /* write MMU regs */
case ASI_LEON_MMUREGS: /* LEON3 write MMU regs */
{
int reg = (addr >> 8) & 0x1f;
uint32_t oldreg;
oldreg = env->mmuregs[reg];
switch (reg) {
case 0: /* Control Register */
env->mmuregs[reg] = (env->mmuregs[reg] & 0xff000000) |
(val & 0x00ffffff);
/* Mappings generated during no-fault mode
are invalid in normal mode. */
if ((oldreg ^ env->mmuregs[reg])
& (MMU_NF | env->def.mmu_bm)) {
tlb_flush(cs);
}
break;
case 1: /* Context Table Pointer Register */
env->mmuregs[reg] = val & env->def.mmu_ctpr_mask;
break;
case 2: /* Context Register */
env->mmuregs[reg] = val & env->def.mmu_cxr_mask;
if (oldreg != env->mmuregs[reg]) {
/* we flush when the MMU context changes because
QEMU has no MMU context support */
tlb_flush(cs);
}
break;
case 3: /* Synchronous Fault Status Register with Clear */
case 4: /* Synchronous Fault Address Register */
break;
case 0x10: /* TLB Replacement Control Register */
env->mmuregs[reg] = val & env->def.mmu_trcr_mask;
break;
case 0x13: /* Synchronous Fault Status Register with Read
and Clear */
env->mmuregs[3] = val & env->def.mmu_sfsr_mask;
break;
case 0x14: /* Synchronous Fault Address Register */
env->mmuregs[4] = val;
break;
default:
env->mmuregs[reg] = val;
break;
}
if (oldreg != env->mmuregs[reg]) {
DPRINTF_MMU("mmu change reg[%d]: 0x%08x -> 0x%08x\n",
reg, oldreg, env->mmuregs[reg]);
}
#ifdef DEBUG_MMU
dump_mmu(env);
#endif
}
break;
case ASI_M_TLBDIAG: /* Turbosparc ITLB Diagnostic */
case ASI_M_DIAGS: /* Turbosparc DTLB Diagnostic */
case ASI_M_IODIAG: /* Turbosparc IOTLB Diagnostic */
break;
case ASI_M_TXTC_TAG: /* I-cache tag */
case ASI_M_TXTC_DATA: /* I-cache data */
case ASI_M_DATAC_TAG: /* D-cache tag */
case ASI_M_DATAC_DATA: /* D-cache data */
case ASI_M_FLUSH_PAGE: /* I/D-cache flush page */
case ASI_M_FLUSH_SEG: /* I/D-cache flush segment */
case ASI_M_FLUSH_REGION: /* I/D-cache flush region */
case ASI_M_FLUSH_CTX: /* I/D-cache flush context */
case ASI_M_FLUSH_USER: /* I/D-cache flush user */
break;
case 0x21 ... 0x2f: /* MMU passthrough, 0x100000000 to 0xfffffffff */
{
MemTxResult result;
hwaddr access_addr = (hwaddr)addr | ((hwaddr)(asi & 0xf) << 32);
switch (size) {
case 1:
address_space_stb(cs->as, access_addr, val,
MEMTXATTRS_UNSPECIFIED, &result);
break;
case 2:
address_space_stw(cs->as, access_addr, val,
MEMTXATTRS_UNSPECIFIED, &result);
break;
case 4:
default:
address_space_stl(cs->as, access_addr, val,
MEMTXATTRS_UNSPECIFIED, &result);
break;
case 8:
address_space_stq(cs->as, access_addr, val,
MEMTXATTRS_UNSPECIFIED, &result);
break;
}
if (result != MEMTX_OK) {
sparc_raise_mmu_fault(cs, access_addr, true, false, false,
size, GETPC());
}
}
break;
case 0x30: /* store buffer tags or Turbosparc secondary cache diagnostic */
case 0x31: /* store buffer data, Ross RT620 I-cache flush or
Turbosparc snoop RAM */
case 0x32: /* store buffer control or Turbosparc page table
descriptor diagnostic */
case 0x36: /* I-cache flash clear */
case 0x37: /* D-cache flash clear */
break;
case 0x38: /* SuperSPARC MMU Breakpoint Control Registers*/
{
int reg = (addr >> 8) & 3;
switch (reg) {
case 0: /* Breakpoint Value (Addr) */
env->mmubpregs[reg] = (val & 0xfffffffffULL);
break;
case 1: /* Breakpoint Mask */
env->mmubpregs[reg] = (val & 0xfffffffffULL);
break;
case 2: /* Breakpoint Control */
env->mmubpregs[reg] = (val & 0x7fULL);
break;
case 3: /* Breakpoint Status */
env->mmubpregs[reg] = (val & 0xfULL);
break;
}
DPRINTF_MMU("write breakpoint reg[%d] 0x%016x\n", reg,
env->mmuregs[reg]);
}
break;
case 0x49: /* SuperSPARC MMU Counter Breakpoint Value */
env->mmubpctrv = val & 0xffffffff;
break;
case 0x4a: /* SuperSPARC MMU Counter Breakpoint Control */
env->mmubpctrc = val & 0x3;
break;
case 0x4b: /* SuperSPARC MMU Counter Breakpoint Status */
env->mmubpctrs = val & 0x3;
break;
case 0x4c: /* SuperSPARC MMU Breakpoint Action */
env->mmubpaction = val & 0x1fff;
break;
case ASI_USERTXT: /* User code access, XXX */
case ASI_KERNELTXT: /* Supervisor code access, XXX */
default:
sparc_raise_mmu_fault(cs, addr, true, false, asi, size, GETPC());
break;
case ASI_USERDATA: /* User data access */
case ASI_KERNELDATA: /* Supervisor data access */
case ASI_P:
case ASI_M_BYPASS: /* MMU passthrough */
case ASI_LEON_BYPASS: /* LEON MMU passthrough */
case ASI_M_BCOPY: /* Block copy, sta access */
case ASI_M_BFILL: /* Block fill, stda access */
/* These are always handled inline. */
g_assert_not_reached();
}
#ifdef DEBUG_ASI
dump_asi("write", addr, asi, size, val);
#endif
}
#endif /* CONFIG_USER_ONLY */
#else /* TARGET_SPARC64 */
#ifdef CONFIG_USER_ONLY
uint64_t helper_ld_asi(CPUSPARCState *env, target_ulong addr,
int asi, uint32_t memop)
{
int size = 1 << (memop & MO_SIZE);
int sign = memop & MO_SIGN;
uint64_t ret = 0;
if (asi < 0x80) {
cpu_raise_exception_ra(env, TT_PRIV_ACT, GETPC());
}
do_check_align(env, addr, size - 1, GETPC());
addr = asi_address_mask(env, asi, addr);
switch (asi) {
case ASI_PNF: /* Primary no-fault */
case ASI_PNFL: /* Primary no-fault LE */
case ASI_SNF: /* Secondary no-fault */
case ASI_SNFL: /* Secondary no-fault LE */
if (page_check_range(addr, size, PAGE_READ) == -1) {
ret = 0;
break;
}
switch (size) {
case 1:
ret = cpu_ldub_data(env, addr);
break;
case 2:
ret = cpu_lduw_data(env, addr);
break;
case 4:
ret = cpu_ldl_data(env, addr);
break;
case 8:
ret = cpu_ldq_data(env, addr);
break;
default:
g_assert_not_reached();
}
break;
break;
case ASI_P: /* Primary */
case ASI_PL: /* Primary LE */
case ASI_S: /* Secondary */
case ASI_SL: /* Secondary LE */
/* These are always handled inline. */
g_assert_not_reached();
default:
cpu_raise_exception_ra(env, TT_DATA_ACCESS, GETPC());
}
/* Convert from little endian */
switch (asi) {
case ASI_PNFL: /* Primary no-fault LE */
case ASI_SNFL: /* Secondary no-fault LE */
switch (size) {
case 2:
ret = bswap16(ret);
break;
case 4:
ret = bswap32(ret);
break;
case 8:
ret = bswap64(ret);
break;
}
}
/* Convert to signed number */
if (sign) {
switch (size) {
case 1:
ret = (int8_t) ret;
break;
case 2:
ret = (int16_t) ret;
break;
case 4:
ret = (int32_t) ret;
break;
}
}
#ifdef DEBUG_ASI
dump_asi("read", addr, asi, size, ret);
#endif
return ret;
}
void helper_st_asi(CPUSPARCState *env, target_ulong addr, target_ulong val,
int asi, uint32_t memop)
{
int size = 1 << (memop & MO_SIZE);
#ifdef DEBUG_ASI
dump_asi("write", addr, asi, size, val);
#endif
if (asi < 0x80) {
cpu_raise_exception_ra(env, TT_PRIV_ACT, GETPC());
}
do_check_align(env, addr, size - 1, GETPC());
switch (asi) {
case ASI_P: /* Primary */
case ASI_PL: /* Primary LE */
case ASI_S: /* Secondary */
case ASI_SL: /* Secondary LE */
/* These are always handled inline. */
g_assert_not_reached();
case ASI_PNF: /* Primary no-fault, RO */
case ASI_SNF: /* Secondary no-fault, RO */
case ASI_PNFL: /* Primary no-fault LE, RO */
case ASI_SNFL: /* Secondary no-fault LE, RO */
default:
cpu_raise_exception_ra(env, TT_DATA_ACCESS, GETPC());
}
}
#else /* CONFIG_USER_ONLY */
uint64_t helper_ld_asi(CPUSPARCState *env, target_ulong addr,
int asi, uint32_t memop)
{
int size = 1 << (memop & MO_SIZE);
int sign = memop & MO_SIGN;
CPUState *cs = env_cpu(env);
uint64_t ret = 0;
#if defined(DEBUG_ASI)
target_ulong last_addr = addr;
#endif
asi &= 0xff;
do_check_asi(env, asi, GETPC());
do_check_align(env, addr, size - 1, GETPC());
addr = asi_address_mask(env, asi, addr);
switch (asi) {
case ASI_PNF:
case ASI_PNFL:
case ASI_SNF:
case ASI_SNFL:
{
TCGMemOpIdx oi;
int idx = (env->pstate & PS_PRIV
? (asi & 1 ? MMU_KERNEL_SECONDARY_IDX : MMU_KERNEL_IDX)
: (asi & 1 ? MMU_USER_SECONDARY_IDX : MMU_USER_IDX));
if (cpu_get_phys_page_nofault(env, addr, idx) == -1ULL) {
#ifdef DEBUG_ASI
dump_asi("read ", last_addr, asi, size, ret);
#endif
/* exception_index is set in get_physical_address_data. */
cpu_raise_exception_ra(env, cs->exception_index, GETPC());
}
oi = make_memop_idx(memop, idx);
switch (size) {
case 1:
ret = helper_ret_ldub_mmu(env, addr, oi, GETPC());
break;
case 2:
if (asi & 8) {
ret = helper_le_lduw_mmu(env, addr, oi, GETPC());
} else {
ret = helper_be_lduw_mmu(env, addr, oi, GETPC());
}
break;
case 4:
if (asi & 8) {
ret = helper_le_ldul_mmu(env, addr, oi, GETPC());
} else {
ret = helper_be_ldul_mmu(env, addr, oi, GETPC());
}
break;
case 8:
if (asi & 8) {
ret = helper_le_ldq_mmu(env, addr, oi, GETPC());
} else {
ret = helper_be_ldq_mmu(env, addr, oi, GETPC());
}
break;
default:
g_assert_not_reached();
}
}
break;
case ASI_AIUP: /* As if user primary */
case ASI_AIUS: /* As if user secondary */
case ASI_AIUPL: /* As if user primary LE */
case ASI_AIUSL: /* As if user secondary LE */
case ASI_P: /* Primary */
case ASI_S: /* Secondary */
case ASI_PL: /* Primary LE */
case ASI_SL: /* Secondary LE */
case ASI_REAL: /* Bypass */
case ASI_REAL_IO: /* Bypass, non-cacheable */
case ASI_REAL_L: /* Bypass LE */
case ASI_REAL_IO_L: /* Bypass, non-cacheable LE */
case ASI_N: /* Nucleus */
case ASI_NL: /* Nucleus Little Endian (LE) */
case ASI_NUCLEUS_QUAD_LDD: /* Nucleus quad LDD 128 bit atomic */
case ASI_NUCLEUS_QUAD_LDD_L: /* Nucleus quad LDD 128 bit atomic LE */
case ASI_TWINX_AIUP: /* As if user primary, twinx */
case ASI_TWINX_AIUS: /* As if user secondary, twinx */
case ASI_TWINX_REAL: /* Real address, twinx */
case ASI_TWINX_AIUP_L: /* As if user primary, twinx, LE */
case ASI_TWINX_AIUS_L: /* As if user secondary, twinx, LE */
case ASI_TWINX_REAL_L: /* Real address, twinx, LE */
case ASI_TWINX_N: /* Nucleus, twinx */
case ASI_TWINX_NL: /* Nucleus, twinx, LE */
/* ??? From the UA2011 document; overlaps BLK_INIT_QUAD_LDD_* */
case ASI_TWINX_P: /* Primary, twinx */
case ASI_TWINX_PL: /* Primary, twinx, LE */
case ASI_TWINX_S: /* Secondary, twinx */
case ASI_TWINX_SL: /* Secondary, twinx, LE */
/* These are always handled inline. */
g_assert_not_reached();
case ASI_UPA_CONFIG: /* UPA config */
/* XXX */
break;
case ASI_LSU_CONTROL: /* LSU */
ret = env->lsu;
break;
case ASI_IMMU: /* I-MMU regs */
{
int reg = (addr >> 3) & 0xf;
switch (reg) {
case 0:
/* 0x00 I-TSB Tag Target register */
ret = ultrasparc_tag_target(env->immu.tag_access);
break;
case 3: /* SFSR */
ret = env->immu.sfsr;
break;
case 5: /* TSB access */
ret = env->immu.tsb;
break;
case 6:
/* 0x30 I-TSB Tag Access register */
ret = env->immu.tag_access;
break;
default:
sparc_raise_mmu_fault(cs, addr, false, false, 1, size, GETPC());
ret = 0;
}
break;
}
case ASI_IMMU_TSB_8KB_PTR: /* I-MMU 8k TSB pointer */
{
/* env->immuregs[5] holds I-MMU TSB register value
env->immuregs[6] holds I-MMU Tag Access register value */
ret = ultrasparc_tsb_pointer(env, &env->immu, 0);
break;
}
case ASI_IMMU_TSB_64KB_PTR: /* I-MMU 64k TSB pointer */
{
/* env->immuregs[5] holds I-MMU TSB register value
env->immuregs[6] holds I-MMU Tag Access register value */
ret = ultrasparc_tsb_pointer(env, &env->immu, 1);
break;
}
case ASI_ITLB_DATA_ACCESS: /* I-MMU data access */
{
int reg = (addr >> 3) & 0x3f;
ret = env->itlb[reg].tte;
break;
}
case ASI_ITLB_TAG_READ: /* I-MMU tag read */
{
int reg = (addr >> 3) & 0x3f;
ret = env->itlb[reg].tag;
break;
}
case ASI_DMMU: /* D-MMU regs */
{
int reg = (addr >> 3) & 0xf;
switch (reg) {
case 0:
/* 0x00 D-TSB Tag Target register */
ret = ultrasparc_tag_target(env->dmmu.tag_access);
break;
case 1: /* 0x08 Primary Context */
ret = env->dmmu.mmu_primary_context;
break;
case 2: /* 0x10 Secondary Context */
ret = env->dmmu.mmu_secondary_context;
break;
case 3: /* SFSR */
ret = env->dmmu.sfsr;
break;
case 4: /* 0x20 SFAR */
ret = env->dmmu.sfar;
break;
case 5: /* 0x28 TSB access */
ret = env->dmmu.tsb;
break;
case 6: /* 0x30 D-TSB Tag Access register */
ret = env->dmmu.tag_access;
break;
case 7:
ret = env->dmmu.virtual_watchpoint;
break;
case 8:
ret = env->dmmu.physical_watchpoint;
break;
default:
sparc_raise_mmu_fault(cs, addr, false, false, 1, size, GETPC());
ret = 0;
}
break;
}
case ASI_DMMU_TSB_8KB_PTR: /* D-MMU 8k TSB pointer */
{
/* env->dmmuregs[5] holds D-MMU TSB register value
env->dmmuregs[6] holds D-MMU Tag Access register value */
ret = ultrasparc_tsb_pointer(env, &env->dmmu, 0);
break;
}
case ASI_DMMU_TSB_64KB_PTR: /* D-MMU 64k TSB pointer */
{
/* env->dmmuregs[5] holds D-MMU TSB register value
env->dmmuregs[6] holds D-MMU Tag Access register value */
ret = ultrasparc_tsb_pointer(env, &env->dmmu, 1);
break;
}
case ASI_DTLB_DATA_ACCESS: /* D-MMU data access */
{
int reg = (addr >> 3) & 0x3f;
ret = env->dtlb[reg].tte;
break;
}
case ASI_DTLB_TAG_READ: /* D-MMU tag read */
{
int reg = (addr >> 3) & 0x3f;
ret = env->dtlb[reg].tag;
break;
}
case ASI_INTR_DISPATCH_STAT: /* Interrupt dispatch, RO */
break;
case ASI_INTR_RECEIVE: /* Interrupt data receive */
ret = env->ivec_status;
break;
case ASI_INTR_R: /* Incoming interrupt vector, RO */
{
int reg = (addr >> 4) & 0x3;
if (reg < 3) {
ret = env->ivec_data[reg];
}
break;
}
case ASI_SCRATCHPAD: /* UA2005 privileged scratchpad */
if (unlikely((addr >= 0x20) && (addr < 0x30))) {
/* Hyperprivileged access only */
sparc_raise_mmu_fault(cs, addr, false, false, 1, size, GETPC());
}
/* fall through */
case ASI_HYP_SCRATCHPAD: /* UA2005 hyperprivileged scratchpad */
{
unsigned int i = (addr >> 3) & 0x7;
ret = env->scratch[i];
break;
}
case ASI_MMU: /* UA2005 Context ID registers */
switch ((addr >> 3) & 0x3) {
case 1:
ret = env->dmmu.mmu_primary_context;
break;
case 2:
ret = env->dmmu.mmu_secondary_context;
break;
default:
sparc_raise_mmu_fault(cs, addr, true, false, 1, size, GETPC());
}
break;
case ASI_DCACHE_DATA: /* D-cache data */
case ASI_DCACHE_TAG: /* D-cache tag access */
case ASI_ESTATE_ERROR_EN: /* E-cache error enable */
case ASI_AFSR: /* E-cache asynchronous fault status */
case ASI_AFAR: /* E-cache asynchronous fault address */
case ASI_EC_TAG_DATA: /* E-cache tag data */
case ASI_IC_INSTR: /* I-cache instruction access */
case ASI_IC_TAG: /* I-cache tag access */
case ASI_IC_PRE_DECODE: /* I-cache predecode */
case ASI_IC_NEXT_FIELD: /* I-cache LRU etc. */
case ASI_EC_W: /* E-cache tag */
case ASI_EC_R: /* E-cache tag */
break;
case ASI_DMMU_TSB_DIRECT_PTR: /* D-MMU data pointer */
case ASI_ITLB_DATA_IN: /* I-MMU data in, WO */
case ASI_IMMU_DEMAP: /* I-MMU demap, WO */
case ASI_DTLB_DATA_IN: /* D-MMU data in, WO */
case ASI_DMMU_DEMAP: /* D-MMU demap, WO */
case ASI_INTR_W: /* Interrupt vector, WO */
default:
sparc_raise_mmu_fault(cs, addr, false, false, 1, size, GETPC());
ret = 0;
break;
}
/* Convert to signed number */
if (sign) {
switch (size) {
case 1:
ret = (int8_t) ret;
break;
case 2:
ret = (int16_t) ret;
break;
case 4:
ret = (int32_t) ret;
break;
default:
break;
}
}
#ifdef DEBUG_ASI
dump_asi("read ", last_addr, asi, size, ret);
#endif
return ret;
}
void helper_st_asi(CPUSPARCState *env, target_ulong addr, target_ulong val,
int asi, uint32_t memop)
{
int size = 1 << (memop & MO_SIZE);
CPUState *cs = env_cpu(env);
#ifdef DEBUG_ASI
dump_asi("write", addr, asi, size, val);
#endif
asi &= 0xff;
do_check_asi(env, asi, GETPC());
do_check_align(env, addr, size - 1, GETPC());
addr = asi_address_mask(env, asi, addr);
switch (asi) {
case ASI_AIUP: /* As if user primary */
case ASI_AIUS: /* As if user secondary */
case ASI_AIUPL: /* As if user primary LE */
case ASI_AIUSL: /* As if user secondary LE */
case ASI_P: /* Primary */
case ASI_S: /* Secondary */
case ASI_PL: /* Primary LE */
case ASI_SL: /* Secondary LE */
case ASI_REAL: /* Bypass */
case ASI_REAL_IO: /* Bypass, non-cacheable */
case ASI_REAL_L: /* Bypass LE */
case ASI_REAL_IO_L: /* Bypass, non-cacheable LE */
case ASI_N: /* Nucleus */
case ASI_NL: /* Nucleus Little Endian (LE) */
case ASI_NUCLEUS_QUAD_LDD: /* Nucleus quad LDD 128 bit atomic */
case ASI_NUCLEUS_QUAD_LDD_L: /* Nucleus quad LDD 128 bit atomic LE */
case ASI_TWINX_AIUP: /* As if user primary, twinx */
case ASI_TWINX_AIUS: /* As if user secondary, twinx */
case ASI_TWINX_REAL: /* Real address, twinx */
case ASI_TWINX_AIUP_L: /* As if user primary, twinx, LE */
case ASI_TWINX_AIUS_L: /* As if user secondary, twinx, LE */
case ASI_TWINX_REAL_L: /* Real address, twinx, LE */
case ASI_TWINX_N: /* Nucleus, twinx */
case ASI_TWINX_NL: /* Nucleus, twinx, LE */
/* ??? From the UA2011 document; overlaps BLK_INIT_QUAD_LDD_* */
case ASI_TWINX_P: /* Primary, twinx */
case ASI_TWINX_PL: /* Primary, twinx, LE */
case ASI_TWINX_S: /* Secondary, twinx */
case ASI_TWINX_SL: /* Secondary, twinx, LE */
/* These are always handled inline. */
g_assert_not_reached();
/* these ASIs have different functions on UltraSPARC-IIIi
* and UA2005 CPUs. Use the explicit numbers to avoid confusion
*/
case 0x31:
case 0x32:
case 0x39:
case 0x3a:
if (cpu_has_hypervisor(env)) {
/* UA2005
* ASI_DMMU_CTX_ZERO_TSB_BASE_PS0
* ASI_DMMU_CTX_ZERO_TSB_BASE_PS1
* ASI_DMMU_CTX_NONZERO_TSB_BASE_PS0
* ASI_DMMU_CTX_NONZERO_TSB_BASE_PS1
*/
int idx = ((asi & 2) >> 1) | ((asi & 8) >> 2);
env->dmmu.sun4v_tsb_pointers[idx] = val;
} else {
helper_raise_exception(env, TT_ILL_INSN);
}
break;
case 0x33:
case 0x3b:
if (cpu_has_hypervisor(env)) {
/* UA2005
* ASI_DMMU_CTX_ZERO_CONFIG
* ASI_DMMU_CTX_NONZERO_CONFIG
*/
env->dmmu.sun4v_ctx_config[(asi & 8) >> 3] = val;
} else {
helper_raise_exception(env, TT_ILL_INSN);
}
break;
case 0x35:
case 0x36:
case 0x3d:
case 0x3e:
if (cpu_has_hypervisor(env)) {
/* UA2005
* ASI_IMMU_CTX_ZERO_TSB_BASE_PS0
* ASI_IMMU_CTX_ZERO_TSB_BASE_PS1
* ASI_IMMU_CTX_NONZERO_TSB_BASE_PS0
* ASI_IMMU_CTX_NONZERO_TSB_BASE_PS1
*/
int idx = ((asi & 2) >> 1) | ((asi & 8) >> 2);
env->immu.sun4v_tsb_pointers[idx] = val;
} else {
helper_raise_exception(env, TT_ILL_INSN);
}
break;
case 0x37:
case 0x3f:
if (cpu_has_hypervisor(env)) {
/* UA2005
* ASI_IMMU_CTX_ZERO_CONFIG
* ASI_IMMU_CTX_NONZERO_CONFIG
*/
env->immu.sun4v_ctx_config[(asi & 8) >> 3] = val;
} else {
helper_raise_exception(env, TT_ILL_INSN);
}
break;
case ASI_UPA_CONFIG: /* UPA config */
/* XXX */
return;
case ASI_LSU_CONTROL: /* LSU */
env->lsu = val & (DMMU_E | IMMU_E);
return;
case ASI_IMMU: /* I-MMU regs */
{
int reg = (addr >> 3) & 0xf;
uint64_t oldreg;
oldreg = env->immu.mmuregs[reg];
switch (reg) {
case 0: /* RO */
return;
case 1: /* Not in I-MMU */
case 2:
return;
case 3: /* SFSR */
if ((val & 1) == 0) {
val = 0; /* Clear SFSR */
}
env->immu.sfsr = val;
break;
case 4: /* RO */
return;
case 5: /* TSB access */
DPRINTF_MMU("immu TSB write: 0x%016" PRIx64 " -> 0x%016"
PRIx64 "\n", env->immu.tsb, val);
env->immu.tsb = val;
break;
case 6: /* Tag access */
env->immu.tag_access = val;
break;
case 7:
case 8:
return;
default:
sparc_raise_mmu_fault(cs, addr, true, false, 1, size, GETPC());
break;
}
if (oldreg != env->immu.mmuregs[reg]) {
DPRINTF_MMU("immu change reg[%d]: 0x%016" PRIx64 " -> 0x%016"
PRIx64 "\n", reg, oldreg, env->immuregs[reg]);
}
#ifdef DEBUG_MMU
dump_mmu(env);
#endif
return;
}
case ASI_ITLB_DATA_IN: /* I-MMU data in */
/* ignore real translation entries */
if (!(addr & TLB_UST1_IS_REAL_BIT)) {
replace_tlb_1bit_lru(env->itlb, env->immu.tag_access,
val, "immu", env, addr);
}
return;
case ASI_ITLB_DATA_ACCESS: /* I-MMU data access */
{
/* TODO: auto demap */
unsigned int i = (addr >> 3) & 0x3f;
/* ignore real translation entries */
if (!(addr & TLB_UST1_IS_REAL_BIT)) {
replace_tlb_entry(&env->itlb[i], env->immu.tag_access,
sun4v_tte_to_sun4u(env, addr, val), env);
}
#ifdef DEBUG_MMU
DPRINTF_MMU("immu data access replaced entry [%i]\n", i);
dump_mmu(env);
#endif
return;
}
case ASI_IMMU_DEMAP: /* I-MMU demap */
demap_tlb(env->itlb, addr, "immu", env);
return;
case ASI_DMMU: /* D-MMU regs */
{
int reg = (addr >> 3) & 0xf;
uint64_t oldreg;
oldreg = env->dmmu.mmuregs[reg];
switch (reg) {
case 0: /* RO */
case 4:
return;
case 3: /* SFSR */
if ((val & 1) == 0) {
val = 0; /* Clear SFSR, Fault address */
env->dmmu.sfar = 0;
}
env->dmmu.sfsr = val;
break;
case 1: /* Primary context */
env->dmmu.mmu_primary_context = val;
/* can be optimized to only flush MMU_USER_IDX
and MMU_KERNEL_IDX entries */
tlb_flush(cs);
break;
case 2: /* Secondary context */
env->dmmu.mmu_secondary_context = val;
/* can be optimized to only flush MMU_USER_SECONDARY_IDX
and MMU_KERNEL_SECONDARY_IDX entries */
tlb_flush(cs);
break;
case 5: /* TSB access */
DPRINTF_MMU("dmmu TSB write: 0x%016" PRIx64 " -> 0x%016"
PRIx64 "\n", env->dmmu.tsb, val);
env->dmmu.tsb = val;
break;
case 6: /* Tag access */
env->dmmu.tag_access = val;
break;
case 7: /* Virtual Watchpoint */
env->dmmu.virtual_watchpoint = val;
break;
case 8: /* Physical Watchpoint */
env->dmmu.physical_watchpoint = val;
break;
default:
sparc_raise_mmu_fault(cs, addr, true, false, 1, size, GETPC());
break;
}
if (oldreg != env->dmmu.mmuregs[reg]) {
DPRINTF_MMU("dmmu change reg[%d]: 0x%016" PRIx64 " -> 0x%016"
PRIx64 "\n", reg, oldreg, env->dmmuregs[reg]);
}
#ifdef DEBUG_MMU
dump_mmu(env);
#endif
return;
}
case ASI_DTLB_DATA_IN: /* D-MMU data in */
/* ignore real translation entries */
if (!(addr & TLB_UST1_IS_REAL_BIT)) {
replace_tlb_1bit_lru(env->dtlb, env->dmmu.tag_access,
val, "dmmu", env, addr);
}
return;
case ASI_DTLB_DATA_ACCESS: /* D-MMU data access */
{
unsigned int i = (addr >> 3) & 0x3f;
/* ignore real translation entries */
if (!(addr & TLB_UST1_IS_REAL_BIT)) {
replace_tlb_entry(&env->dtlb[i], env->dmmu.tag_access,
sun4v_tte_to_sun4u(env, addr, val), env);
}
#ifdef DEBUG_MMU
DPRINTF_MMU("dmmu data access replaced entry [%i]\n", i);
dump_mmu(env);
#endif
return;
}
case ASI_DMMU_DEMAP: /* D-MMU demap */
demap_tlb(env->dtlb, addr, "dmmu", env);
return;
case ASI_INTR_RECEIVE: /* Interrupt data receive */
env->ivec_status = val & 0x20;
return;
case ASI_SCRATCHPAD: /* UA2005 privileged scratchpad */
if (unlikely((addr >= 0x20) && (addr < 0x30))) {
/* Hyperprivileged access only */
sparc_raise_mmu_fault(cs, addr, true, false, 1, size, GETPC());
}
/* fall through */
case ASI_HYP_SCRATCHPAD: /* UA2005 hyperprivileged scratchpad */
{
unsigned int i = (addr >> 3) & 0x7;
env->scratch[i] = val;
return;
}
case ASI_MMU: /* UA2005 Context ID registers */
{
switch ((addr >> 3) & 0x3) {
case 1:
env->dmmu.mmu_primary_context = val;
env->immu.mmu_primary_context = val;
tlb_flush_by_mmuidx(cs,
(1 << MMU_USER_IDX) | (1 << MMU_KERNEL_IDX));
break;
case 2:
env->dmmu.mmu_secondary_context = val;
env->immu.mmu_secondary_context = val;
tlb_flush_by_mmuidx(cs,
(1 << MMU_USER_SECONDARY_IDX) |
(1 << MMU_KERNEL_SECONDARY_IDX));
break;
default:
sparc_raise_mmu_fault(cs, addr, true, false, 1, size, GETPC());
}
}
return;
case ASI_QUEUE: /* UA2005 CPU mondo queue */
case ASI_DCACHE_DATA: /* D-cache data */
case ASI_DCACHE_TAG: /* D-cache tag access */
case ASI_ESTATE_ERROR_EN: /* E-cache error enable */
case ASI_AFSR: /* E-cache asynchronous fault status */
case ASI_AFAR: /* E-cache asynchronous fault address */
case ASI_EC_TAG_DATA: /* E-cache tag data */
case ASI_IC_INSTR: /* I-cache instruction access */
case ASI_IC_TAG: /* I-cache tag access */
case ASI_IC_PRE_DECODE: /* I-cache predecode */
case ASI_IC_NEXT_FIELD: /* I-cache LRU etc. */
case ASI_EC_W: /* E-cache tag */
case ASI_EC_R: /* E-cache tag */
return;
case ASI_IMMU_TSB_8KB_PTR: /* I-MMU 8k TSB pointer, RO */
case ASI_IMMU_TSB_64KB_PTR: /* I-MMU 64k TSB pointer, RO */
case ASI_ITLB_TAG_READ: /* I-MMU tag read, RO */
case ASI_DMMU_TSB_8KB_PTR: /* D-MMU 8k TSB pointer, RO */
case ASI_DMMU_TSB_64KB_PTR: /* D-MMU 64k TSB pointer, RO */
case ASI_DMMU_TSB_DIRECT_PTR: /* D-MMU data pointer, RO */
case ASI_DTLB_TAG_READ: /* D-MMU tag read, RO */
case ASI_INTR_DISPATCH_STAT: /* Interrupt dispatch, RO */
case ASI_INTR_R: /* Incoming interrupt vector, RO */
case ASI_PNF: /* Primary no-fault, RO */
case ASI_SNF: /* Secondary no-fault, RO */
case ASI_PNFL: /* Primary no-fault LE, RO */
case ASI_SNFL: /* Secondary no-fault LE, RO */
default:
sparc_raise_mmu_fault(cs, addr, true, false, 1, size, GETPC());
return;
}
}
#endif /* CONFIG_USER_ONLY */
#endif /* TARGET_SPARC64 */
#if !defined(CONFIG_USER_ONLY)
void sparc_cpu_do_transaction_failed(CPUState *cs, hwaddr physaddr,
vaddr addr, unsigned size,
MMUAccessType access_type,
int mmu_idx, MemTxAttrs attrs,
MemTxResult response, uintptr_t retaddr)
{
bool is_write = access_type == MMU_DATA_STORE;
bool is_exec = access_type == MMU_INST_FETCH;
bool is_asi = false;
sparc_raise_mmu_fault(cs, physaddr, is_write, is_exec,
is_asi, size, retaddr);
}
#endif
#if !defined(CONFIG_USER_ONLY)
void QEMU_NORETURN sparc_cpu_do_unaligned_access(CPUState *cs, vaddr addr,
MMUAccessType access_type,
int mmu_idx,
uintptr_t retaddr)
{
SPARCCPU *cpu = SPARC_CPU(cs);
CPUSPARCState *env = &cpu->env;
#ifdef DEBUG_UNALIGNED
printf("Unaligned access to 0x" TARGET_FMT_lx " from 0x" TARGET_FMT_lx
"\n", addr, env->pc);
#endif
cpu_raise_exception_ra(env, TT_UNALIGNED, retaddr);
}
#endif
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