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Make CPU iotlb a structure rather than a plain hwaddr

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Make the CPU iotlb a structure rather than a plain hwaddr;
this will allow us to add transaction attributes to it.

Backports commit e469b22ffda40188954fafaf6e3308f58d50f8f8 from qemu
This commit is contained in:
Peter Maydell 2018-02-12 18:31:17 -05:00 committed by Lioncash
parent 825e74410f
commit 2aecce835b
No known key found for this signature in database
GPG key ID: 4E3C3CC1031BA9C7
3 changed files with 34 additions and 23 deletions
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4
qemu/cputlb.c
View file

@ -249,7 +249,7 @@ void tlb_set_page(CPUState *cpu, target_ulong vaddr,
env->iotlb_v[mmu_idx][vidx] = env->iotlb[mmu_idx][index];
/* refill the tlb */
env->iotlb[mmu_idx][index] = iotlb - vaddr;
env->iotlb[mmu_idx][index].addr = iotlb - vaddr;
te->addend = (uintptr_t)(addend - vaddr);
if (prot & PAGE_READ) {
te->addr_read = address;
@ -302,7 +302,7 @@ tb_page_addr_t get_page_addr_code(CPUArchState *env1, target_ulong addr)
return -1;
}
}
pd = env1->iotlb[mmu_idx][page_index] & ~TARGET_PAGE_MASK;
pd = env1->iotlb[mmu_idx][page_index].addr & ~TARGET_PAGE_MASK;
mr = iotlb_to_region(cpu, pd);
if (memory_region_is_unassigned(cpu->uc, mr)) {
CPUClass *cc = CPU_GET_CLASS(env1->uc, cpu);

13
qemu/include/exec/cpu-defs.h
View file

@ -121,12 +121,21 @@ typedef struct CPUTLBEntry {
QEMU_BUILD_BUG_ON(sizeof(CPUTLBEntry) != (1 << CPU_TLB_ENTRY_BITS));
/* The IOTLB is not accessed directly inline by generated TCG code,
* so the CPUIOTLBEntry layout is not as critical as that of the
* CPUTLBEntry. (This is also why we don't want to combine the two
* structs into one.)
*/
typedef struct CPUIOTLBEntry {
hwaddr addr;
} CPUIOTLBEntry;
#define CPU_COMMON_TLB \
/* The meaning of the MMU modes is defined in the target code. */ \
CPUTLBEntry tlb_table[NB_MMU_MODES][CPU_TLB_SIZE]; \
CPUTLBEntry tlb_v_table[NB_MMU_MODES][CPU_VTLB_SIZE]; \
hwaddr iotlb[NB_MMU_MODES][CPU_TLB_SIZE]; \
hwaddr iotlb_v[NB_MMU_MODES][CPU_VTLB_SIZE]; \
CPUIOTLBEntry iotlb[NB_MMU_MODES][CPU_TLB_SIZE]; \
CPUIOTLBEntry iotlb_v[NB_MMU_MODES][CPU_VTLB_SIZE]; \
target_ulong tlb_flush_addr; \
target_ulong tlb_flush_mask; \
target_ulong vtlb_index; \

40
qemu/softmmu_template.h
View file

@ -125,7 +125,7 @@
* victim tlb. try to refill from the victim tlb before walking the \
* page table. */ \
int vidx; \
hwaddr tmpiotlb; \
CPUIOTLBEntry tmpiotlb; \
CPUTLBEntry tmptlb; \
for (vidx = CPU_VTLB_SIZE-1; vidx >= 0; --vidx) { \
if (env->tlb_v_table[mmu_idx][vidx].ty == (addr & TARGET_PAGE_MASK)) {\
@ -157,12 +157,13 @@ static inline bool victim_tlb_hit_write(CPUArchState *env, target_ulong addr, in
#ifndef SOFTMMU_CODE_ACCESS
static inline DATA_TYPE glue(io_read, SUFFIX)(CPUArchState *env,
hwaddr physaddr,
CPUIOTLBEntry *iotlbentry,
target_ulong addr,
uintptr_t retaddr)
{
uint64_t val;
CPUState *cpu = ENV_GET_CPU(env);
hwaddr physaddr = iotlbentry->addr;
MemoryRegion *mr = iotlb_to_region(cpu, physaddr);
physaddr = (physaddr & TARGET_PAGE_MASK) + addr;
@ -316,12 +317,12 @@ WORD_TYPE helper_le_ld_name(CPUArchState *env, target_ulong addr,
/* Handle an IO access. */
if (unlikely(tlb_addr & ~TARGET_PAGE_MASK)) {
hwaddr ioaddr;
CPUIOTLBEntry *iotlbentry;
if ((addr & (DATA_SIZE - 1)) != 0) {
goto do_unaligned_access;
}
ioaddr = env->iotlb[mmu_idx][index];
if (ioaddr == 0) {
iotlbentry = &env->iotlb[mmu_idx][index];
if (iotlbentry->addr == 0) {
env->invalid_addr = addr;
env->invalid_error = UC_ERR_READ_UNMAPPED;
// printf("Invalid memory read at " TARGET_FMT_lx "\n", addr);
@ -333,7 +334,7 @@ WORD_TYPE helper_le_ld_name(CPUArchState *env, target_ulong addr,
/* ??? Note that the io helpers always read data in the target
byte ordering. We should push the LE/BE request down into io. */
res = glue(io_read, SUFFIX)(env, ioaddr, addr, retaddr);
res = glue(io_read, SUFFIX)(env, iotlbentry, addr, retaddr);
res = TGT_LE(res);
goto _out;
}
@ -543,13 +544,13 @@ WORD_TYPE helper_be_ld_name(CPUArchState *env, target_ulong addr,
/* Handle an IO access. */
if (unlikely(tlb_addr & ~TARGET_PAGE_MASK)) {
hwaddr ioaddr;
CPUIOTLBEntry *iotlbentry;
if ((addr & (DATA_SIZE - 1)) != 0) {
goto do_unaligned_access;
}
ioaddr = env->iotlb[mmu_idx][index];
iotlbentry = &env->iotlb[mmu_idx][index];
if (ioaddr == 0) {
if (iotlbentry->addr == 0) {
env->invalid_addr = addr;
env->invalid_error = UC_ERR_READ_UNMAPPED;
// printf("Invalid memory read at " TARGET_FMT_lx "\n", addr);
@ -559,7 +560,7 @@ WORD_TYPE helper_be_ld_name(CPUArchState *env, target_ulong addr,
/* ??? Note that the io helpers always read data in the target
byte ordering. We should push the LE/BE request down into io. */
res = glue(io_read, SUFFIX)(env, ioaddr, addr, retaddr);
res = glue(io_read, SUFFIX)(env, iotlbentry, addr, retaddr);
res = TGT_BE(res);
goto _out;
}
@ -658,12 +659,13 @@ WORD_TYPE helper_be_lds_name(CPUArchState *env, target_ulong addr,
#endif
static inline void glue(io_write, SUFFIX)(CPUArchState *env,
hwaddr physaddr,
CPUIOTLBEntry *iotlbentry,
DATA_TYPE val,
target_ulong addr,
uintptr_t retaddr)
{
CPUState *cpu = ENV_GET_CPU(env);
hwaddr physaddr = iotlbentry->addr;
MemoryRegion *mr = iotlb_to_region(cpu, physaddr);
physaddr = (physaddr & TARGET_PAGE_MASK) + addr;
@ -766,12 +768,12 @@ void helper_le_st_name(CPUArchState *env, target_ulong addr, DATA_TYPE val,
/* Handle an IO access. */
if (unlikely(tlb_addr & ~TARGET_PAGE_MASK)) {
hwaddr ioaddr;
CPUIOTLBEntry *iotlbentry;
if ((addr & (DATA_SIZE - 1)) != 0) {
goto do_unaligned_access;
}
ioaddr = env->iotlb[mmu_idx][index];
if (ioaddr == 0) {
iotlbentry = &env->iotlb[mmu_idx][index];
if (iotlbentry->addr == 0) {
env->invalid_addr = addr;
env->invalid_error = UC_ERR_WRITE_UNMAPPED;
// printf("***** Invalid memory write at " TARGET_FMT_lx "\n", addr);
@ -782,7 +784,7 @@ void helper_le_st_name(CPUArchState *env, target_ulong addr, DATA_TYPE val,
/* ??? Note that the io helpers always read data in the target
byte ordering. We should push the LE/BE request down into io. */
val = TGT_LE(val);
glue(io_write, SUFFIX)(env, ioaddr, val, addr, retaddr);
glue(io_write, SUFFIX)(env, iotlbentry, val, addr, retaddr);
return;
}
@ -924,12 +926,12 @@ void helper_be_st_name(CPUArchState *env, target_ulong addr, DATA_TYPE val,
/* Handle an IO access. */
if (unlikely(tlb_addr & ~TARGET_PAGE_MASK)) {
hwaddr ioaddr;
CPUIOTLBEntry *iotlbentry;
if ((addr & (DATA_SIZE - 1)) != 0) {
goto do_unaligned_access;
}
ioaddr = env->iotlb[mmu_idx][index];
if (ioaddr == 0) {
iotlbentry = &env->iotlb[mmu_idx][index];
if (iotlbentry->addr == 0) {
env->invalid_addr = addr;
env->invalid_error = UC_ERR_WRITE_UNMAPPED;
// printf("***** Invalid memory write at " TARGET_FMT_lx "\n", addr);
@ -940,7 +942,7 @@ void helper_be_st_name(CPUArchState *env, target_ulong addr, DATA_TYPE val,
/* ??? Note that the io helpers always read data in the target
byte ordering. We should push the LE/BE request down into io. */
val = TGT_BE(val);
glue(io_write, SUFFIX)(env, ioaddr, val, addr, retaddr);
glue(io_write, SUFFIX)(env, iotlbentry, val, addr, retaddr);
return;
}