claunia/86Box
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add incomplete VIA AC97 FM implementation

Browse Source
This commit is contained in:
RichardG867
2021-07-22 11:10:05 -03:00
parent dffca679c0
commit ce63373613
2 changed files with 175 additions and 30 deletions
Download Patch File Download Diff File Expand all files Collapse all files

146
src/chipset/via_pipc.c
View File

@@ -50,7 +50,10 @@
#include <86box/sio.h>
#include <86box/hwm.h>
#include <86box/gameport.h>
#include <86box/sound.h>
#include <86box/snd_ac97.h>
#include <86box/snd_sb.h>
#include <86box/nmi.h>
/* Most revision numbers (PCI-ISA bridge or otherwise) were lifted from PCI device
listings on forums, as VIA's datasheets are not very helpful regarding those. */
@@ -68,11 +71,11 @@ typedef struct
uint32_t local;
uint8_t max_func;
uint8_t pci_isa_regs[256];
uint8_t ide_regs[256];
uint8_t usb_regs[2][256];
uint8_t power_regs[256];
uint8_t ac97_regs[2][256];
uint8_t pci_isa_regs[256],
ide_regs[256],
usb_regs[2][256],
power_regs[256],
ac97_regs[2][256], fmnmi_regs[4], fm_regs[4];
sff8038i_t *bm[2];
nvr_t *nvr;
int nvr_enabled, slot;
@@ -80,7 +83,9 @@ typedef struct
usb_t *usb[2];
acpi_t *acpi;
void *gameport, *ac97;
uint16_t midigame_base;
sb_t *sb;
uint16_t midigame_base, fmnmi_base;
uint8_t fm_enabled;
} pipc_t;
@@ -355,6 +360,7 @@ pipc_reset_hard(void *priv)
dev->ac97_regs[i][0x40] = 0x01;
dev->ac97_regs[i][0x43] = 0x1c;
dev->ac97_regs[i][0x48] = 0x01;
dev->ac97_regs[i][0x4b] = 0x02;
pipc_sgd_handlers(dev, i);
@@ -456,12 +462,12 @@ static void
pipc_sgd_handlers(pipc_t *dev, uint8_t modem)
{
if (!dev->ac97)
return;
return;
if (modem)
ac97_via_remap_modem_sgd(dev->ac97, dev->ac97_regs[1][0x11] << 8, dev->ac97_regs[1][0x04] & PCI_COMMAND_IO);
ac97_via_remap_modem_sgd(dev->ac97, dev->ac97_regs[1][0x11] << 8, dev->ac97_regs[1][0x04] & PCI_COMMAND_IO);
else
ac97_via_remap_audio_sgd(dev->ac97, dev->ac97_regs[0][0x11] << 8, dev->ac97_regs[0][0x04] & PCI_COMMAND_IO);
ac97_via_remap_audio_sgd(dev->ac97, dev->ac97_regs[0][0x11] << 8, dev->ac97_regs[0][0x04] & PCI_COMMAND_IO);
}
@@ -516,12 +522,94 @@ static void
pipc_codec_handlers(pipc_t *dev, uint8_t modem)
{
if (!dev->ac97)
return;
return;
if (modem)
ac97_via_remap_modem_codec(dev->ac97, dev->ac97_regs[1][0x1d] << 8, dev->ac97_regs[1][0x04] & PCI_COMMAND_IO);
ac97_via_remap_modem_codec(dev->ac97, dev->ac97_regs[1][0x1d] << 8, dev->ac97_regs[1][0x04] & PCI_COMMAND_IO);
else
ac97_via_remap_audio_codec(dev->ac97, dev->ac97_regs[0][0x1d] << 8, dev->ac97_regs[0][0x04] & PCI_COMMAND_IO);
ac97_via_remap_audio_codec(dev->ac97, dev->ac97_regs[0][0x1d] << 8, dev->ac97_regs[0][0x04] & PCI_COMMAND_IO);
}
static uint8_t
pipc_fmnmi_read(uint16_t addr, void *priv)
{
pipc_t *dev = (pipc_t *) priv;
uint8_t ret = dev->fmnmi_regs[addr & 0x03];
pipc_log("PIPC: fmnmi_read(%02X) = %02X\n", addr & 0x03, ret);
if (dev->ac97_regs[0][0x48] & 0x04)
smi_line = 0;
else
nmi = 0;
return ret;
}
static void
pipc_fmnmi_write(uint16_t addr, uint8_t val, void *priv)
{
pipc_t *dev = (pipc_t *) priv;
pipc_log("PIPC: fmnmi_write(%02X, %02X)\n", addr & 0x03, val);
}
static uint8_t
pipc_fm_read(uint16_t addr, void *priv)
{
pipc_t *dev = (pipc_t *) priv;
uint8_t ret = opl3_read(addr, &dev->sb->opl);
pipc_log("PIPC: fm_read(%02X) = %02X\n", addr & 0x03, ret);
return ret;
}
static void
pipc_fm_write(uint16_t addr, uint8_t val, void *priv)
{
pipc_t *dev = (pipc_t *) priv;
pipc_log("PIPC: fm_write(%02X, %02X)\n", addr & 0x03, val);
opl3_write(addr, val, &dev->sb->opl);
dev->fm_regs[addr & 0x03] = val;
dev->fmnmi_regs[0x00] = (addr & 0x02) ? 0x02 : 0x01;
dev->fmnmi_regs[0x01] = dev->fm_regs[addr & 0x02];
dev->fmnmi_regs[0x02] = dev->fm_regs[(addr & 0x02) | 0x01];
if (dev->ac97_regs[0][0x48] & 0x04)
smi_line = 1;
else
nmi = 1;
}
static void
pipc_fmnmi_handlers(pipc_t *dev, uint8_t modem)
{
if (!dev->ac97 || modem)
return;
if (dev->fmnmi_base)
io_removehandler(dev->fmnmi_base, 4, pipc_fmnmi_read, NULL, NULL, pipc_fmnmi_write, NULL, NULL, dev);
if (dev->fm_enabled)
io_removehandler(0x388, 4, pipc_fm_read, NULL, NULL, pipc_fm_write, NULL, NULL, dev);
dev->fmnmi_base = (dev->ac97_regs[0][0x15] << 8) | (dev->ac97_regs[0][0x14] & 0xfc);
dev->fm_enabled = !!(dev->ac97_regs[0][0x42] & 0x04);
if (dev->fmnmi_base && (dev->ac97_regs[0][0x04] & PCI_COMMAND_IO))
io_sethandler(dev->fmnmi_base, 4, pipc_fmnmi_read, NULL, NULL, pipc_fmnmi_write, NULL, NULL, dev);
if (dev->fm_enabled)
io_sethandler(0x388, 4, pipc_fm_read, NULL, NULL, pipc_fm_write, NULL, NULL, dev);
}
@@ -1096,6 +1184,7 @@ pipc_write(int func, int addr, uint8_t val, void *priv)
pipc_midigame_handlers(dev, func);
pipc_sgd_handlers(dev, func);
pipc_codec_handlers(dev, func);
pipc_fmnmi_handlers(dev, func);
break;
case 0x09: case 0x0a: case 0x0b:
@@ -1103,11 +1192,18 @@ pipc_write(int func, int addr, uint8_t val, void *priv)
dev->ac97_regs[func][addr] = val;
break;
case 0x11:
case 0x10: case 0x11:
dev->ac97_regs[func][addr] = val;
pipc_sgd_handlers(dev, func);
break;
case 0x14: case 0x15:
if (addr == 0x14)
val = (val & 0xfc) | 1;
dev->ac97_regs[func][addr] = val;
pipc_fmnmi_handlers(dev, func);
break;
case 0x18: case 0x19:
if (addr == 0x18)
val = (val & 0xfc) | 1;
@@ -1115,7 +1211,7 @@ pipc_write(int func, int addr, uint8_t val, void *priv)
pipc_midigame_handlers(dev, func);
break;
case 0x1c:
case 0x1c: case 0x1d:
dev->ac97_regs[func][addr] = val;
pipc_codec_handlers(dev, func);
break;
@@ -1128,10 +1224,8 @@ pipc_write(int func, int addr, uint8_t val, void *priv)
case 0x42: case 0x4a: case 0x4b:
dev->ac97_regs[0][addr] = dev->ac97_regs[1][addr] = val;
gameport_remap(dev->gameport, (dev->ac97_regs[0][0x42] & 0x08) ? ((dev->ac97_regs[0][0x4b] << 8) | dev->ac97_regs[0][0x4a]) : 0);
break;
case 0x41:
dev->ac97_regs[func][addr] = val;
if (addr == 0x42)
pipc_fmnmi_handlers(dev, func);
break;
case 0x43:
@@ -1146,6 +1240,20 @@ pipc_write(int func, int addr, uint8_t val, void *priv)
dev->ac97_regs[0][addr] = dev->ac97_regs[1][addr] = val & 0x0f;
break;
case 0x48:
dev->ac97_regs[0][addr] = dev->ac97_regs[1][addr] = val & 0x0f;
/*if (!(val & 0x01)) {
if (val & 0x04)
smi_line = 0;
else
nmi = 0;
}*/
if (val & 0x04)
smi_line = !!(val & 0x01);
else
nmi = !!(val & 0x01);
break;
default:
dev->ac97_regs[func][addr] = val;
break;
@@ -1227,6 +1335,8 @@ pipc_init(const device_t *info)
dev->ac97 = device_add(&ac97_via_device);
ac97_via_set_slot(dev->ac97, dev->slot, PCI_INTC);
dev->sb = device_add(&sb_pro_compat_device);
dev->gameport = gameport_add(&gameport_sio_device);
}