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Add dummy USB and ACPI implementations to VT82C586B. Windows 2000 and XP now work on FIC VA-503+.

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This commit is contained in:
SarahW 2019-01-19 18:05:27 +00:00
commit 57579cdd07
1 changed files with 78 additions and 0 deletions
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78
src/vt82c586b.c
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@ -20,8 +20,22 @@ static struct
uint8_t sysctrl;
sff_busmaster_t busmaster[2];
struct
{
uint16_t io_base;
} usb;
struct
{
uint16_t io_base;
} power;
} vt82c586b;
#define ACPI_TIMER_FREQ 3579545
#define ACPI_IO_ENABLE (1 << 7)
#define ACPI_TIMER_32BIT (1 << 3)
static uint8_t vt82c586b_read(int func, int addr, void *priv)
{
switch (func)
@ -157,6 +171,28 @@ static void vt82c586b_ide_write(int addr, uint8_t val)
}
}
}
static uint8_t usb_reg_read(uint16_t addr, void *p)
{
// pclog("usb_reg_read: addr=%04x\n", addr);
switch (addr & 0x1f)
{
case 0x10: case 0x11: case 0x12: case 0x13: /*Port status*/
return 0;
}
return 0xff;
}
static void usb_reg_write(uint16_t addr, uint8_t val, void *p)
{
// pclog("usb_reg_write: addr=%04x val=%02x\n", addr, val);
}
static void usb_update_io_mapping()
{
io_removehandler(vt82c586b.usb.io_base, 0x20, usb_reg_read, NULL, NULL, usb_reg_write, NULL, NULL, NULL);
vt82c586b.usb.io_base = (vt82c586b.usb_regs[0x20] & ~0x1f) | (vt82c586b.usb_regs[0x21] << 8);
if (vt82c586b.usb_regs[PCI_REG_COMMAND] & PCI_COMMAND_IO)
io_sethandler(vt82c586b.usb.io_base, 0x20, usb_reg_read, NULL, NULL, usb_reg_write, NULL, NULL, NULL);
}
static void vt82c586b_usb_write(int addr, uint8_t val)
{
/*Read-only addresses*/
@ -174,6 +210,7 @@ static void vt82c586b_usb_write(int addr, uint8_t val)
{
case 4:
vt82c586b.usb_regs[4] = val & 0x97;
usb_update_io_mapping();
break;
case 7:
vt82c586b.usb_regs[7] = val & 0x7f;
@ -181,12 +218,38 @@ static void vt82c586b_usb_write(int addr, uint8_t val)
case 0x20:
vt82c586b.usb_regs[0x20] = (val & ~0x1f) | 1;
usb_update_io_mapping();
break;
case 0x21:
vt82c586b.usb_regs[0x21] = val;
usb_update_io_mapping();
break;
default:
vt82c586b.usb_regs[addr] = val;
break;
}
// pclog(" USB write %02x %02x\n", addr, val);
}
static uint8_t power_reg_read(uint16_t addr, void *p)
{
uint32_t timer;
switch (addr & 0xff)
{
case 0x08: case 0x09: case 0x0a: case 0x0b: /*ACPI timer*/
timer = (tsc * ACPI_TIMER_FREQ) / cpu_get_speed();
if (!(vt82c586b.power_regs[0x41] & ACPI_TIMER_32BIT))
timer &= 0x00ffffff;
return (timer >> (8 * (addr & 3))) & 0xff;
}
// pclog("power_reg_read: addr=%04x\n", addr);
return 0xff;
}
static void power_reg_write(uint16_t addr, uint8_t val, void *p)
{
// pclog("power_reg_write: addr=%04x val=%02x\n", addr, val);
}
static void vt82c586b_power_write(int addr, uint8_t val)
{
@ -200,6 +263,21 @@ static void vt82c586b_power_write(int addr, uint8_t val)
switch (addr)
{
case 0x41:
io_removehandler(vt82c586b.power.io_base, 0x0100, power_reg_read, NULL, NULL, power_reg_write, NULL, NULL, NULL);
vt82c586b.power_regs[addr] = val;
if (vt82c586b.power_regs[0x41] & ACPI_IO_ENABLE)
io_sethandler(vt82c586b.power.io_base, 0x0100, power_reg_read, NULL, NULL, power_reg_write, NULL, NULL, NULL);
break;
case 0x49:
io_removehandler(vt82c586b.power.io_base, 0x0100, power_reg_read, NULL, NULL, power_reg_write, NULL, NULL, NULL);
vt82c586b.power_regs[addr] = val;
vt82c586b.power.io_base = val << 8;
if (vt82c586b.power_regs[0x41] & ACPI_IO_ENABLE)
io_sethandler(vt82c586b.power.io_base, 0x0100, power_reg_read, NULL, NULL, power_reg_write, NULL, NULL, NULL);
break;
default:
vt82c586b.power_regs[addr] = val;
break;