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PC87309: Make the Super I/O chip relocatable.

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This commit is contained in:
OBattler
2025-05-18 20:42:28 +02:00
parent 5dc99cc137
commit 9441b6f2cf
1 changed files with 32 additions and 13 deletions
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45
src/sio/sio_pc87309.c
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@@ -41,15 +41,19 @@ typedef struct pc87309_t {
uint8_t regs[48];
uint8_t ld_regs[256][208];
uint8_t pm[8];
uint8_t baddr;
uint16_t pm_base;
int cur_reg;
fdc_t *fdc;
serial_t *uart[2];
} pc87309_t;
static void fdc_handler(pc87309_t *dev);
static void lpt1_handler(pc87309_t *dev);
static void serial_handler(pc87309_t *dev, int uart);
static void fdc_handler(pc87309_t *dev);
static void lpt1_handler(pc87309_t *dev);
static void serial_handler(pc87309_t *dev, int uart);
static void pc87309_write(uint16_t port, uint8_t val, void *priv);
static uint8_t pc87309_read(uint16_t port, void *priv);
static void
pc87309_pm_write(uint16_t port, uint8_t val, void *priv)
@@ -104,6 +108,26 @@ pc87309_pm_init(pc87309_t *dev, uint16_t addr)
pc87309_pm_read, NULL, NULL, pc87309_pm_write, NULL, NULL, dev);
}
static void
superio_handler(pc87309_t *dev)
{
io_removehandler(0x15c, 0x0002,
pc87309_read, NULL, NULL, pc87309_write, NULL, NULL, dev);
io_removehandler(0x02e, 0x0002,
pc87309_read, NULL, NULL, pc87309_write, NULL, NULL, dev);
switch (dev->baddr) {
case 2:
io_sethandler(0x15c, 0x0002,
pc87309_read, NULL, NULL, pc87309_write, NULL, NULL, dev);
break;
case 3:
io_sethandler(0x02e, 0x0002,
pc87309_read, NULL, NULL, pc87309_write, NULL, NULL, dev);
break;
}
}
static void
fdc_handler(pc87309_t *dev)
{
@@ -197,6 +221,7 @@ pc87309_write(uint16_t port, uint8_t val, void *priv)
break;
case 0x22:
dev->regs[dev->cur_reg] = val & 0x7f;
superio_handler(dev);
break;
default:
if (dev->cur_reg >= 0x30) {
@@ -379,6 +404,7 @@ pc87309_reset(pc87309_t *dev)
dev->regs[0x20] = dev->id;
dev->regs[0x21] = 0x04;
dev->regs[0x22] = dev->baddr;
dev->ld_regs[0x00][0x01] = 0x01;
dev->ld_regs[0x00][0x30] = 0x03;
@@ -453,6 +479,8 @@ pc87309_reset(pc87309_t *dev)
serial_remove(dev->uart[0]);
serial_remove(dev->uart[1]);
fdc_reset(dev->fdc);
superio_handler(dev);
}
static void
@@ -472,19 +500,10 @@ pc87309_init(const device_t *info)
dev->fdc = device_add(&fdc_at_nsc_device);
dev->uart[0] = device_add_inst(&ns16550_device, 1);
dev->uart[1] = device_add_inst(&ns16550_device, 2);
dev->baddr = (info->local & 0x100) ? 2 : 3;
pc87309_reset(dev);
if (info->local & 0x100) {
io_sethandler(0x15c, 0x0002,
pc87309_read, NULL, NULL, pc87309_write, NULL, NULL, dev);
} else {
io_sethandler(0x02e, 0x0002,
pc87309_read, NULL, NULL, pc87309_write, NULL, NULL, dev);
}
return dev;
}