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piix_pci: define symbolic value for PAM0, PAM6 and SMRAM. 

Define symbolic value in i440fx configuration space
for 0x59, 0x5f and 0x7f and use them.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Isaku Yamahata 2009-12-15 20:26:05 +09:00 committed by Michael S. Tsirkin
parent 98a3cb024b
commit f2c688bb42
1 changed files with 12 additions and 5 deletions
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17
hw/piix_pci.c
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@ -44,6 +44,11 @@ struct PCII440FXState {
PIIX3State *piix3;
};
#define I440FX_PAM 0x59
#define I440FX_PAM_SIZE 7
#define I440FX_SMRAM 0x72
static void piix3_set_irq(void *opaque, int irq_num, int level);
/* return the global irq number corresponding to a given device irq
@ -88,12 +93,12 @@ static void i440fx_update_memory_mappings(PCII440FXState *d)
int i, r;
uint32_t smram, addr;
update_pam(d, 0xf0000, 0x100000, (d->dev.config[0x59] >> 4) & 3);
update_pam(d, 0xf0000, 0x100000, (d->dev.config[I440FX_PAM] >> 4) & 3);
for(i = 0; i < 12; i++) {
r = (d->dev.config[(i >> 1) + 0x5a] >> ((i & 1) * 4)) & 3;
r = (d->dev.config[(i >> 1) + (I440FX_PAM + 1)] >> ((i & 1) * 4)) & 3;
update_pam(d, 0xc0000 + 0x4000 * i, 0xc0000 + 0x4000 * (i + 1), r);
}
smram = d->dev.config[0x72];
smram = d->dev.config[I440FX_SMRAM];
if ((d->smm_enabled && (smram & 0x08)) || (smram & 0x40)) {
cpu_register_physical_memory(0xa0000, 0x20000, 0xa0000);
} else {
@ -132,7 +137,9 @@ static void i440fx_write_config(PCIDevice *dev,
/* XXX: implement SMRAM.D_LOCK */
pci_default_write_config(dev, address, val, len);
if ((address >= 0x59 && address <= 0x5f) || address == 0x72)
if ((address >= I440FX_PAM &&
address <= I440FX_PAM + I440FX_PAM_SIZE - 1) ||
address == I440FX_SMRAM)
i440fx_update_memory_mappings(d);
}
@ -196,7 +203,7 @@ static int i440fx_initfn(PCIDevice *dev)
pci_config_set_class(d->dev.config, PCI_CLASS_BRIDGE_HOST);
d->dev.config[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL; // header_type
d->dev.config[0x72] = 0x02; /* SMRAM */
d->dev.config[I440FX_SMRAM] = 0x02;
return 0;
}