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exec.c: Make address_space_rw take transaction attributes

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Make address_space_rw take transaction attributes, rather
than always using the 'unspecified' attributes.

Backports commit 5c9eb0286c819c1836220a32f2e1a7b5004ac79a from qemu
This commit is contained in:
Peter Maydell 2018-02-12 18:56:13 -05:00 committed by Lioncash
parent 6143189cce
commit b94c89e559
No known key found for this signature in database
GPG key ID: 4E3C3CC1031BA9C7
2 changed files with 49 additions and 35 deletions
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53
qemu/exec.c
View file

@ -1254,13 +1254,16 @@ static MemTxResult subpage_read(struct uc_struct* uc, void *opaque, hwaddr addr,
{
subpage_t *subpage = opaque;
uint8_t buf[4];
MemTxResult res;
#if defined(DEBUG_SUBPAGE)
printf("%s: subpage %p len %u addr " TARGET_FMT_plx "\n", __func__,
subpage, len, addr);
#endif
if (address_space_read(subpage->as, addr + subpage->base, buf, len)) {
return MEMTX_DECODE_ERROR;
res = address_space_read(subpage->as, addr + subpage->base,
attrs, buf, len);
if (res) {
return res;
}
switch (len) {
case 1:
@ -1307,10 +1310,8 @@ static MemTxResult subpage_write(struct uc_struct* uc, void *opaque, hwaddr addr
default:
abort();
}
if (address_space_write(subpage->as, addr + subpage->base, buf, len)) {
return MEMTX_DECODE_ERROR;
}
return MEMTX_OK;
return address_space_write(subpage->as, addr + subpage->base,
attrs, buf, len);
}
static bool subpage_accepts(void *opaque, hwaddr addr,
@ -1649,8 +1650,8 @@ static int memory_access_size(MemoryRegion *mr, unsigned l, hwaddr addr)
return l;
}
bool address_space_rw(AddressSpace *as, hwaddr addr, uint8_t *buf,
int len, bool is_write)
MemTxResult address_space_rw(AddressSpace *as, hwaddr addr, MemTxAttrs attrs,
uint8_t *buf, int len, bool is_write)
{
hwaddr l;
uint8_t *ptr;
@ -1658,7 +1659,6 @@ bool address_space_rw(AddressSpace *as, hwaddr addr, uint8_t *buf,
hwaddr addr1;
MemoryRegion *mr;
MemTxResult result = MEMTX_OK;
MemTxAttrs attrs = MEMTXATTRS_UNSPECIFIED;
while (len > 0) {
l = len;
@ -1760,22 +1760,24 @@ bool address_space_rw(AddressSpace *as, hwaddr addr, uint8_t *buf,
return result;
}
bool address_space_write(AddressSpace *as, hwaddr addr,
const uint8_t *buf, int len)
MemTxResult address_space_write(AddressSpace *as, hwaddr addr, MemTxAttrs attrs,
const uint8_t *buf, int len)
{
return address_space_rw(as, addr, (uint8_t *)buf, len, true);
return address_space_rw(as, addr, attrs, (uint8_t *)buf, len, true);
}
bool address_space_read(AddressSpace *as, hwaddr addr, uint8_t *buf, int len)
MemTxResult address_space_read(AddressSpace *as, hwaddr addr, MemTxAttrs attrs,
uint8_t *buf, int len)
{
return address_space_rw(as, addr, buf, len, false);
return address_space_rw(as, addr, attrs, buf, len, false);
}
bool cpu_physical_memory_rw(AddressSpace *as, hwaddr addr, uint8_t *buf,
int len, int is_write)
int len, int is_write)
{
return address_space_rw(as, addr, buf, len, is_write);
return address_space_rw(as, addr, MEMTXATTRS_UNSPECIFIED,
buf, len, is_write) == MEMTX_OK;
}
enum write_rom_type {
@ -1901,7 +1903,8 @@ void *address_space_map(AddressSpace *as,
memory_region_ref(mr);
as->uc->bounce.mr = mr;
if (!is_write) {
address_space_read(as, addr, as->uc->bounce.buffer, l);
address_space_read(as, addr, MEMTXATTRS_UNSPECIFIED,
as->uc->bounce.buffer, l);
}
*plen = l;
@ -1951,7 +1954,8 @@ void address_space_unmap(AddressSpace *as, void *buffer, hwaddr len,
return;
}
if (is_write) {
address_space_write(as, as->uc->bounce.addr, as->uc->bounce.buffer, access_len);
address_space_write(as, as->uc->bounce.addr, MEMTXATTRS_UNSPECIFIED,
as->uc->bounce.buffer, access_len);
}
qemu_vfree(as->uc->bounce.buffer);
as->uc->bounce.buffer = NULL;
@ -2094,7 +2098,7 @@ uint64_t ldq_be_phys(AddressSpace *as, hwaddr addr)
uint32_t ldub_phys(AddressSpace *as, hwaddr addr)
{
uint8_t val;
address_space_rw(as, addr, &val, 1, 0);
address_space_rw(as, addr, MEMTXATTRS_UNSPECIFIED, &val, 1, 0);
return val;
}
@ -2242,7 +2246,7 @@ void stl_be_phys(AddressSpace *as, hwaddr addr, uint32_t val)
void stb_phys(AddressSpace *as, hwaddr addr, uint32_t val)
{
uint8_t v = val;
address_space_rw(as, addr, &v, 1, 1);
address_space_rw(as, addr, MEMTXATTRS_UNSPECIFIED, &v, 1, 1);
}
/* warning: addr must be aligned */
@ -2306,19 +2310,19 @@ void stw_be_phys(AddressSpace *as, hwaddr addr, uint32_t val)
void stq_phys(AddressSpace *as, hwaddr addr, uint64_t val)
{
val = tswap64(val);
address_space_rw(as, addr, (void *) &val, 8, 1);
address_space_rw(as, addr, MEMTXATTRS_UNSPECIFIED, (void *) &val, 8, 1);
}
void stq_le_phys(AddressSpace *as, hwaddr addr, uint64_t val)
{
val = cpu_to_le64(val);
address_space_rw(as, addr, (void *) &val, 8, 1);
address_space_rw(as, addr, MEMTXATTRS_UNSPECIFIED, (void *) &val, 8, 1);
}
void stq_be_phys(AddressSpace *as, hwaddr addr, uint64_t val)
{
val = cpu_to_be64(val);
address_space_rw(as, addr, (void *) &val, 8, 1);
address_space_rw(as, addr, MEMTXATTRS_UNSPECIFIED, (void *) &val, 8, 1);
}
/* virtual memory access for debug (includes writing to ROM) */
@ -2342,7 +2346,8 @@ int cpu_memory_rw_debug(CPUState *cpu, target_ulong addr,
if (is_write) {
cpu_physical_memory_write_rom(cpu->as, phys_addr, buf, l);
} else {
address_space_rw(cpu->as, phys_addr, buf, l, 0);
address_space_rw(cpu->as, phys_addr, MEMTXATTRS_UNSPECIFIED,
buf, l, 0);
}
len -= l;
buf += l;

31
qemu/include/exec/memory.h
View file

@ -807,41 +807,50 @@ void address_space_destroy(AddressSpace *as);
/**
* address_space_rw: read from or write to an address space.
*
* Return true if the operation hit any unassigned memory or encountered an
* IOMMU fault.
* Return a MemTxResult indicating whether the operation succeeded
* or failed (eg unassigned memory, device rejected the transaction,
* IOMMU fault).
*
* @as: #AddressSpace to be accessed
* @addr: address within that address space
* @attrs: memory transaction attributes
* @buf: buffer with the data transferred
* @is_write: indicates the transfer direction
*/
bool address_space_rw(AddressSpace *as, hwaddr addr, uint8_t *buf,
int len, bool is_write);
MemTxResult address_space_rw(AddressSpace *as, hwaddr addr,
MemTxAttrs attrs, uint8_t *buf,
int len, bool is_write);
/**
* address_space_write: write to address space.
*
* Return true if the operation hit any unassigned memory or encountered an
* IOMMU fault.
* Return a MemTxResult indicating whether the operation succeeded
* or failed (eg unassigned memory, device rejected the transaction,
* IOMMU fault).
*
* @as: #AddressSpace to be accessed
* @addr: address within that address space
* @attrs: memory transaction attributes
* @buf: buffer with the data transferred
*/
bool address_space_write(AddressSpace *as, hwaddr addr,
const uint8_t *buf, int len);
MemTxResult address_space_write(AddressSpace *as, hwaddr addr,
MemTxAttrs attrs,
const uint8_t *buf, int len);
/**
* address_space_read: read from an address space.
*
* Return true if the operation hit any unassigned memory or encountered an
* IOMMU fault.
* Return a MemTxResult indicating whether the operation succeeded
* or failed (eg unassigned memory, device rejected the transaction,
* IOMMU fault).
*
* @as: #AddressSpace to be accessed
* @addr: address within that address space
* @attrs: memory transaction attributes
* @buf: buffer with the data transferred
*/
bool address_space_read(AddressSpace *as, hwaddr addr, uint8_t *buf, int len);
MemTxResult address_space_read(AddressSpace *as, hwaddr addr, MemTxAttrs attrs,
uint8_t *buf, int len);
/* address_space_translate: translate an address range into an address space
* into a MemoryRegion and an address range into that section