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exec: allows 8-byte accesses in subpage_ops 

Otherwise fw_cfg accesses are split into 4-byte ones before they reach the
fw_cfg ops / handlers.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1419250305-31062-6-git-send-email-pbonzini@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Paolo Bonzini 2014-12-22 13:11:39 +01:00 committed by Peter Maydell
parent d789c84547
commit ff6cff7554
1 changed files with 11 additions and 2 deletions
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13
exec.c
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@ -1768,7 +1768,7 @@ static uint64_t subpage_read(void *opaque, hwaddr addr,
unsigned len)
{
subpage_t *subpage = opaque;
uint8_t buf[4];
uint8_t buf[8];
#if defined(DEBUG_SUBPAGE)
printf("%s: subpage %p len %u addr " TARGET_FMT_plx "\n", __func__,
@ -1782,6 +1782,8 @@ static uint64_t subpage_read(void *opaque, hwaddr addr,
return lduw_p(buf);
case 4:
return ldl_p(buf);
case 8:
return ldq_p(buf);
default:
abort();
}
@ -1791,7 +1793,7 @@ static void subpage_write(void *opaque, hwaddr addr,
uint64_t value, unsigned len)
{
subpage_t *subpage = opaque;
uint8_t buf[4];
uint8_t buf[8];
#if defined(DEBUG_SUBPAGE)
printf("%s: subpage %p len %u addr " TARGET_FMT_plx
@ -1808,6 +1810,9 @@ static void subpage_write(void *opaque, hwaddr addr,
case 4:
stl_p(buf, value);
break;
case 8:
stq_p(buf, value);
break;
default:
abort();
}
@ -1830,6 +1835,10 @@ static bool subpage_accepts(void *opaque, hwaddr addr,
static const MemoryRegionOps subpage_ops = {
.read = subpage_read,
.write = subpage_write,
.impl.min_access_size = 1,
.impl.max_access_size = 8,
.valid.min_access_size = 1,
.valid.max_access_size = 8,
.valid.accepts = subpage_accepts,
.endianness = DEVICE_NATIVE_ENDIAN,
};