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Add basic APM functionality for PIIX/PIIX3 and i430FX, i430VX, i430HX

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and i440FX chipsets.
This commit is contained in:
SarahW 2020-11-01 14:46:56 +00:00
commit 38cee364d3
7 changed files with 233 additions and 8 deletions
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81
src/piix.c
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@ -29,6 +29,12 @@ static sff_busmaster_t piix_busmaster[2];
static uint8_t piix_rc = 0;
static void (*piix_nb_reset)();
#define REG_SMIEN 0xa2
#define REG_SMIREQ 0xaa
#define SMIEN_APMC (1 << 7)
#define SMIREQ_RAPMC (1 << 7)
void piix_write(int func, int addr, uint8_t val, void *priv)
{
@ -139,6 +145,21 @@ void piix_write(int func, int addr, uint8_t val, void *priv)
else
pci_set_irq_routing(PCI_INTD, val & 0xf);
break;
case REG_SMIREQ:
if (piix.type <= TYPE_PIIX3)
{
card_piix[addr] &= val;
return;
}
break;
case REG_SMIREQ+1:
if (piix.type <= TYPE_PIIX3)
{
card_piix[addr] &= val;
return;
}
break;
}
card_piix[addr] = val;
}
@ -179,8 +200,11 @@ void piix_rc_write(uint16_t port, uint8_t val, void *p)
keyboard_at_reset(); /*Reset keyboard controller to reset system flag*/
ide_reset_devices();
piix.pm.timer_offset = tsc;
resetx86();
piix.pm.apmc = piix.pm.apms = 0;
}
resetx86();
else
softresetx86();
}
piix_rc = val & ~4;
@ -205,9 +229,53 @@ static void piix_92_write(uint16_t port, uint8_t val, void *p)
piix.port_92 = val;
}
void piix_init(int card, int pci_a, int pci_b, int pci_c, int pci_d, void (*nb_reset)())
static uint8_t piix_apm_read(uint16_t port, void *p)
{
piix_t *piix = (piix_t *)p;
uint8_t ret = 0xff;
switch (port)
{
case 0xb2:
ret = piix->pm.apmc;
break;
case 0xb3:
ret = piix->pm.apms;
break;
}
// pclog("piix_apm_read: port=%04x ret=%02x\n", port, ret);
return ret;
}
static void piix_apm_write(uint16_t port, uint8_t val, void *p)
{
piix_t *piix = (piix_t *)p;
// pclog("piix_apm_write: port=%04x val=%02x\n", port, val);
switch (port)
{
case 0xb2:
piix->pm.apmc = val;
if (card_piix[REG_SMIEN] & SMIEN_APMC)
{
card_piix[REG_SMIREQ] |= SMIREQ_RAPMC;
// pclog("APMC write causes SMI\n");
x86_smi_trigger();
}
break;
case 0xb3:
piix->pm.apms = val;
break;
}
}
static void piix_common_init(int card, int pci_a, int pci_b, int pci_c, int pci_d, void (*nb_reset)())
{
memset(&piix, 0, sizeof(piix_t));
pci_add_specific(card, piix_read, piix_write, NULL);
memset(card_piix, 0, 256);
@ -263,6 +331,13 @@ void piix_init(int card, int pci_a, int pci_b, int pci_c, int pci_d, void (*nb_r
piix.type = TYPE_PIIX3;
}
void piix_init(int card, int pci_a, int pci_b, int pci_c, int pci_d, void (*nb_reset)())
{
piix_common_init(card, pci_a, pci_b, pci_c, pci_d, nb_reset);
io_sethandler(0x00b2, 0x0002, piix_apm_read, NULL, NULL, piix_apm_write, NULL, NULL, &piix);
}
void piix4_init(int card, int pci_a, int pci_b, int pci_c, int pci_d, void (*nb_reset)())
{
piix_init(card, pci_a, pci_b, pci_c, pci_d, nb_reset);