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Added a sanity check on write to PIIX4(E) DDMA base PCI registers.

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This commit is contained in:
OBattler
2020-09-08 03:42:42 +02:00
parent 96eb247e9a
commit 2569bcbf43
1 changed files with 5 additions and 1 deletions
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6
src/chipset/intel_piix.c
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@@ -275,6 +275,7 @@ piix_write(int func, int addr, uint8_t val, void *priv)
{ {
piix_t *dev = (piix_t *) priv; piix_t *dev = (piix_t *) priv;
uint8_t *fregs; uint8_t *fregs;
uint16_t base;
int i; int i;
/* Return on unsupported function. */ /* Return on unsupported function. */
@@ -443,8 +444,11 @@ piix_write(int func, int addr, uint8_t val, void *priv)
else else
fregs[addr] = val & 0xc0; fregs[addr] = val & 0xc0;
base = fregs[addr | 0x01] << 8;
base |= fregs[addr & 0xfe];
for (i = 0; i < 4; i++) for (i = 0; i < 4; i++)
ddma_update_io_mapping(dev->ddma, (addr & 4) + i, fregs[addr & 0xfe] + (i << 4), fregs[addr | 0x01], 1); ddma_update_io_mapping(dev->ddma, (addr & 4) + i, fregs[addr & 0xfe] + (i << 4), fregs[addr | 0x01], (base != 0x0000));
} }
break; break;
case 0xa0: case 0xa0: