Files
86Box-fork/src/chipset/intel_4x0.c
2020-11-17 22:17:51 +01:00

1779 lines
40 KiB
C

/*
* 86Box A hypervisor and IBM PC system emulator that specializes in
* running old operating systems and software designed for IBM
* PC systems and compatibles from 1981 through fairly recent
* system designs based on the PCI bus.
*
* This file is part of the 86Box distribution.
*
* Implementation of the Intel PCISet chips from 420TX to 440GX.
*
*
*
* Authors: Miran Grca, <mgrca8@gmail.com>
*
* Copyright 2019,2020 Miran Grca.
*/
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <wchar.h>
#include <86box/86box.h>
#include "cpu.h"
#include <86box/mem.h>
#include <86box/smram.h>
#include <86box/io.h>
#include <86box/rom.h>
#include <86box/device.h>
#include <86box/pci.h>
#include <86box/keyboard.h>
#include <86box/chipset.h>
#include <86box/spd.h>
#include <86box/machine.h>
enum
{
INTEL_420TX,
INTEL_420ZX,
INTEL_430LX,
INTEL_430NX,
INTEL_430FX,
INTEL_430HX,
INTEL_430VX,
INTEL_430TX,
INTEL_440FX,
INTEL_440LX,
INTEL_440EX,
INTEL_440BX,
INTEL_440GX,
INTEL_440ZX
};
typedef struct
{
uint8_t pm2_cntrl,
smram_locked, max_drb,
drb_unit, drb_default;
uint8_t regs[256], regs_locked[256];
int type;
smram_t *smram_low, *smram_high;
} i4x0_t;
#ifdef ENABLE_I4X0_LOG
int i4x0_do_log = ENABLE_I4X0_LOG;
static void
i4x0_log(const char *fmt, ...)
{
va_list ap;
if (i4x0_do_log) {
va_start(ap, fmt);
pclog_ex(fmt, ap);
va_end(ap);
}
}
#else
#define i4x0_log(fmt, ...)
#endif
static void
i4x0_map(uint32_t addr, uint32_t size, int state)
{
switch (state & 3) {
case 0:
mem_set_mem_state_both(addr, size, MEM_READ_EXTANY | MEM_WRITE_EXTANY);
break;
case 1:
mem_set_mem_state_both(addr, size, MEM_READ_INTERNAL | MEM_WRITE_EXTANY);
break;
case 2:
mem_set_mem_state_both(addr, size, MEM_READ_EXTANY | MEM_WRITE_INTERNAL);
break;
case 3:
mem_set_mem_state_both(addr, size, MEM_READ_INTERNAL | MEM_WRITE_INTERNAL);
break;
}
flushmmucache_nopc();
}
static void
i4x0_smram_handler_phase0(i4x0_t *dev)
{
uint32_t tom = (mem_size << 10);
if (((dev->type == INTEL_430TX) || (dev->type >= INTEL_440BX)) &&
smram_enabled(dev->smram_high)) {
tom -= (1 << 20);
mem_set_mem_state_smm(tom, (1 << 20), MEM_READ_INTERNAL | MEM_WRITE_INTERNAL);
}
/* Disable any active mappings. */
smram_disable_all();
}
static void
i4x0_smram_handler_phase1(i4x0_t *dev)
{
uint8_t *regs = (uint8_t *) dev->regs;
uint32_t tom = (mem_size << 10);
uint8_t *ext_reg = (dev->type >= INTEL_440BX) ? &(regs[0x73]) : &(regs[0x71]);
uint32_t s, base[2] = { 0x000a0000, 0x00000000 };
uint32_t size[2] = { 0x00010000, 0x00000000 };
if (dev->type >= INTEL_430FX) {
/* Set temporary bases and sizes. */
if (((dev->type == INTEL_430TX) || (dev->type >= INTEL_440BX)) &&
(*ext_reg & 0x80)) {
base[0] = 0x100a0000;
size[0] = 0x00060000;
} else if (((dev->type == INTEL_440LX) || (dev->type == INTEL_440EX)) && ((regs[0x72] & 0x07) == 0x04)) {
base[0] = 0x000c0000;
size[0] = 0x00010000;
} else {
base[0] = 0x000a0000;
size[0] = 0x00020000;
}
if (regs[0x72] & 0x08)
smram_enable(dev->smram_low, base[0], base[0] & 0x000f0000, size[0],
((regs[0x72] & 0x78) == 0x48), (regs[0x72] & 0x08));
if ((regs[0x72] & 0x28) == 0x28) {
/* If SMRAM is enabled and DCLS is set, then data goes to PCI, but
code still goes to DRAM. */
mem_set_mem_state_smram_ex(1, base[0], size[0], 0x02);
}
/* TSEG mapping. */
if ((dev->type == INTEL_430TX) || (dev->type >= INTEL_440BX)) {
if ((regs[0x72] & 0x08) && (*ext_reg & 0x01)) {
size[1] = (1 << (17 + ((*ext_reg >> 1) & 0x03)));
tom -= size[1];
base[1] = tom;
} else
base[1] = size[1] = 0x00000000;
if (size[1] != 0x00000000) {
smram_enable(dev->smram_high, base[1] + (1 << 28), base[1], size[1],
0, 1);
mem_set_mem_state_smm(base[1], size[1], MEM_READ_EXTANY | MEM_WRITE_EXTANY);
}
}
} else {
size[0] = 0x00010000;
switch (regs[0x72] & 0x03) {
case 0:
default:
base[0] = (mem_size << 10) - size[0];
s = 1;
break;
case 1:
base[0] = size[0] = 0x00000000;
s = 1;
break;
case 2:
base[0] = 0x000a0000;
s = 0;
break;
case 3:
base[0] = 0x000b0000;
s = 0;
break;
}
if (size[0] != 0x00000000) {
smram_enable(dev->smram_low, base[0], base[0], size[0],
(((regs[0x72] & 0x38) == 0x20) || s), 1);
if (regs[0x72] & 0x10) {
/* If SMRAM is enabled and DCLS is set, then data goes to PCI, but
code still goes to DRAM. */
mem_set_mem_state_smram_ex(1, base[0], size[0], 0x02);
}
}
}
flushmmucache();
}
static void
i4x0_mask_bar(uint8_t *regs)
{
uint32_t bar;
bar = (regs[0x13] << 24) | (regs[0x12] << 16);
bar &= (((uint32_t) regs[0xb4] << 22) | 0xf0000000);
regs[0x12] = (bar >> 16) & 0xff;
regs[0x13] = (bar >> 24) & 0xff;
}
static uint8_t
pm2_cntrl_read(uint16_t addr, void *p)
{
i4x0_t *dev = (i4x0_t *) p;
return dev->pm2_cntrl & 0x01;
}
static void
pm2_cntrl_write(uint16_t addr, uint8_t val, void *p)
{
i4x0_t *dev = (i4x0_t *) p;
dev->pm2_cntrl = val & 0x01;
}
static void
i4x0_write(int func, int addr, uint8_t val, void *priv)
{
i4x0_t *dev = (i4x0_t *) priv;
uint8_t *regs = (uint8_t *) dev->regs;
uint8_t *regs_l = (uint8_t *) dev->regs_locked;
int i;
if (func > 0)
return;
if (func == 0) switch (addr) {
case 0x04: /*Command register*/
switch (dev->type) {
case INTEL_420TX: case INTEL_420ZX: case INTEL_430LX: case INTEL_430NX:
case INTEL_440BX: case INTEL_440GX: case INTEL_440ZX:
default:
regs[0x04] = (regs[0x04] & ~0x42) | (val & 0x42);
break;
case INTEL_430FX: case INTEL_430HX: case INTEL_430VX: case INTEL_430TX:
case INTEL_440FX:
regs[0x04] = (regs[0x04] & ~0x02) | (val & 0x02);
break;
case INTEL_440LX: case INTEL_440EX:
regs[0x04] = val & 0x40;
break;
}
break;
case 0x05:
switch (dev->type) {
case INTEL_420TX: case INTEL_420ZX: case INTEL_430LX: case INTEL_430NX:
case INTEL_430HX: case INTEL_440FX: case INTEL_440BX: case INTEL_440GX:
case INTEL_440ZX:
regs[0x05] = (regs[0x05] & ~0x01) | (val & 0x01);
break;
case INTEL_440LX: case INTEL_440EX:
regs[0x05] = val & 0x01;
break;
}
break;
case 0x07:
switch (dev->type) {
case INTEL_420TX: case INTEL_420ZX: case INTEL_430LX: case INTEL_430NX:
case INTEL_430HX:
default:
regs[0x07] &= ~(val & 0x70);
break;
case INTEL_430FX: case INTEL_430VX:
case INTEL_430TX:
regs[0x07] &= ~(val & 0x30);
break;
case INTEL_440FX:
regs[0x07] &= ~(val & 0xf9);
break;
case INTEL_440LX: case INTEL_440EX:
regs[0x07] &= ~(val & 0xf1);
break;
case INTEL_440BX: case INTEL_440ZX:
case INTEL_440GX:
regs[0x07] &= ~(val & 0xf0);
break;
}
break;
case 0x0d:
switch (dev->type) {
case INTEL_420TX: case INTEL_420ZX: case INTEL_430LX: case INTEL_430NX:
regs[0x0d] = (val & 0xf0);
break;
default:
regs[0x0d] = (val & 0xf8);
break;
}
break;
case 0x0f:
switch (dev->type) {
case INTEL_430FX: case INTEL_430HX: case INTEL_430VX: case INTEL_430TX:
regs[0x0f] = (val & 0x40);
break;
}
break;
case 0x12:
switch (dev->type) {
case INTEL_440LX: case INTEL_440EX:
case INTEL_440BX: case INTEL_440ZX:
case INTEL_440GX:
regs[0x12] = (val & 0xc0);
i4x0_mask_bar(regs);
break;
}
break;
case 0x13:
switch (dev->type) {
case INTEL_440LX: case INTEL_440EX:
case INTEL_440BX: case INTEL_440ZX:
case INTEL_440GX:
regs[0x13] = val;
i4x0_mask_bar(regs);
break;
}
break;
case 0x2c: case 0x2d: case 0x2e: case 0x2f:
switch (dev->type) {
case INTEL_440BX: case INTEL_440ZX:
case INTEL_440GX:
if (!regs_l[addr]) {
regs[addr] = val;
regs_l[addr] = 1;
}
break;
}
break;
case 0x4f:
switch (dev->type) {
case INTEL_430HX:
regs[0x4f] = (val & 0x84);
break;
case INTEL_430VX:
regs[0x4f] = (val & 0x94);
break;
case INTEL_430TX:
regs[0x4f] = (val & 0x80);
break;
}
break;
case 0x50:
switch (dev->type) {
case INTEL_420TX: case INTEL_420ZX:
case INTEL_430LX: default:
regs[0x50] = (val & 0xe5);
break;
case INTEL_430NX:
regs[0x50] = (val & 0xe7);
break;
case INTEL_430FX:
regs[0x50] = (val & 0xef);
break;
case INTEL_430HX:
regs[0x50] = (val & 0xf7);
break;
case INTEL_430VX: case INTEL_430TX:
regs[0x50] = (val & 0x08);
break;
case INTEL_440FX:
regs[0x50] = (val & 0xf4);
break;
case INTEL_440LX:
regs[0x50] = (val & 0x70);
break;
case INTEL_440EX:
regs[0x50] = (val & 0x20);
break;
case INTEL_440BX:
regs[0x50] = (regs[0x50] & 0x14) | (val & 0xeb);
break;
case INTEL_440GX:
regs[0x50] = (regs[0x50] & 0x04) | (val & 0xe8);
break;
case INTEL_440ZX:
regs[0x50] = (regs[0x50] & 0x34) | (val & 0xcb);
break;
}
break;
case 0x51:
switch (dev->type) {
case INTEL_420TX: case INTEL_420ZX: case INTEL_430LX: case INTEL_430NX:
regs[0x51] = (val & 0xc0);
break;
case INTEL_440FX:
regs[0x51] = (val & 0xc3);
break;
case INTEL_440LX:
regs[0x51] = (regs[0x51] & 0x40) | (val & 0x87);
break;
case INTEL_440EX:
regs[0x51] = (val & 0x86);
break;
case INTEL_440BX: case INTEL_440ZX:
regs[0x51] = (regs[0x51] & 0x70) | (val & 0x8f);
break;
case INTEL_440GX:
regs[0x51] = (regs[0x51] & 0xb0) | (val & 0x4f);
break;
}
break;
case 0x52: /* Cache Control Register */
switch (dev->type) {
case INTEL_420TX: case INTEL_420ZX:
case INTEL_430LX: case INTEL_430FX:
case INTEL_430VX: case INTEL_430TX:
default:
regs[0x52] = (val & 0xfb);
break;
case INTEL_430NX: case INTEL_430HX:
case INTEL_440FX:
regs[0x52] = val;
break;
case INTEL_440BX: case INTEL_440ZX:
case INTEL_440GX:
regs[0x52] = val & 0x07;
break;
}
break;
case 0x53:
switch (dev->type) {
case INTEL_420TX: case INTEL_420ZX:
case INTEL_430LX:
regs[0x53] = val & 0x0b;
break;
case INTEL_430NX:
regs[0x53] = val & 0x0a;
break;
case INTEL_430VX: case INTEL_430TX:
regs[0x53] = val & 0x3f;
break;
case INTEL_440LX: case INTEL_440EX:
regs[0x53] = val & 0x60;
break;
case INTEL_440BX: case INTEL_440GX:
/* Not applicable to 440ZX as that does not support ECC. */
regs[0x53] = val;
break;
}
break;
case 0x54:
switch (dev->type) {
case INTEL_420TX: case INTEL_420ZX:
case INTEL_430LX: case INTEL_430NX:
regs[0x54] = val & 0x07;
break;
case INTEL_430VX:
regs[0x54] = val & 0xd8;
break;
case INTEL_430TX:
regs[0x54] = val & 0xfa;
break;
case INTEL_440FX:
regs[0x54] = val & 0x82;
break;
}
break;
case 0x55:
switch (dev->type) {
case INTEL_420TX: case INTEL_420ZX:
/* According to the FreeBSD 3.x source code, the 420TX/ZX chipset has
this register. The mask is unknown, so write all bits. */
regs[0x55] = val;
break;
case INTEL_430VX: case INTEL_430TX:
regs[0x55] = val & 0x01;
break;
case INTEL_440FX: case INTEL_440LX:
case INTEL_440EX:
regs[0x55] = val;
break;
}
break;
case 0x56:
switch (dev->type) {
case INTEL_420TX: case INTEL_420ZX:
/* According to the FreeBSD 3.x source code, the 420TX/ZX chipset has
this register. The mask is unknown, so write all bits. */
regs[0x56] = val;
break;
case INTEL_430HX:
regs[0x56] = val & 0x1f;
break;
case INTEL_430VX:
regs[0x56] = val & 0x77;
break;
case INTEL_430TX:
regs[0x56] = val & 0x76;
break;
case INTEL_440FX:
case INTEL_440LX: case INTEL_440EX:
regs[0x56] = val;
break;
}
break;
case 0x57:
switch (dev->type) {
case INTEL_420TX: case INTEL_420ZX:
case INTEL_430LX: default:
regs[0x57] = val & 0x3f;
break;
case INTEL_430NX:
regs[0x57] = val;
break;
case INTEL_430FX: case INTEL_430HX:
case INTEL_430VX:
regs[0x57] = val & 0xcf;
break;
case INTEL_430TX:
regs[0x57] = val & 0xdf;
break;
case INTEL_440FX:
regs[0x57] = val & 0x77;
break;
case INTEL_440LX: case INTEL_440EX:
regs[0x57] = val & 0x37;
break;
case INTEL_440BX: case INTEL_440GX:
regs[0x57] = val & 0x3f;
break;
case INTEL_440ZX:
regs[0x57] = val & 0x2f;
break;
}
break;
case 0x58:
switch (dev->type) {
case INTEL_420TX: case INTEL_420ZX:
case INTEL_430LX: default:
regs[0x58] = val & 0x01;
break;
case INTEL_430NX:
case INTEL_440BX: case INTEL_440ZX:
regs[0x58] = val & 0x03;
break;
case INTEL_430FX: case INTEL_440FX:
regs[0x58] = val & 0x7f;
break;
case INTEL_430HX: case INTEL_430VX:
case INTEL_440LX: case INTEL_440EX:
regs[0x58] = val;
break;
case INTEL_430TX:
regs[0x58] = val & 0x7b;
break;
}
break;
case 0x59: /* PAM0 */
if (dev->type <= INTEL_430NX) {
if ((regs[0x59] ^ val) & 0x0f)
i4x0_map(0x80000, 0x20000, val & 0x0f);
}
if ((regs[0x59] ^ val) & 0xf0) {
i4x0_map(0xf0000, 0x10000, val >> 4);
shadowbios = (val & 0x10);
}
if (dev->type > INTEL_430NX)
regs[0x59] = val & 0x70;
else
regs[0x59] = val & 0x77;
break;
case 0x5a: /* PAM1 */
if ((regs[0x5a] ^ val) & 0x0f)
i4x0_map(0xc0000, 0x04000, val & 0xf);
if ((regs[0x5a] ^ val) & 0xf0)
i4x0_map(0xc4000, 0x04000, val >> 4);
regs[0x5a] = val & 0x77;
break;
case 0x5b: /*PAM2 */
if ((regs[0x5b] ^ val) & 0x0f)
i4x0_map(0xc8000, 0x04000, val & 0xf);
if ((regs[0x5b] ^ val) & 0xf0)
i4x0_map(0xcc000, 0x04000, val >> 4);
regs[0x5b] = val & 0x77;
break;
case 0x5c: /*PAM3 */
if ((regs[0x5c] ^ val) & 0x0f)
i4x0_map(0xd0000, 0x04000, val & 0xf);
if ((regs[0x5c] ^ val) & 0xf0)
i4x0_map(0xd4000, 0x04000, val >> 4);
regs[0x5c] = val & 0x77;
break;
case 0x5d: /* PAM4 */
if ((regs[0x5d] ^ val) & 0x0f)
i4x0_map(0xd8000, 0x04000, val & 0xf);
if ((regs[0x5d] ^ val) & 0xf0)
i4x0_map(0xdc000, 0x04000, val >> 4);
regs[0x5d] = val & 0x77;
break;
case 0x5e: /* PAM5 */
if ((regs[0x5e] ^ val) & 0x0f)
i4x0_map(0xe0000, 0x04000, val & 0xf);
if ((regs[0x5e] ^ val) & 0xf0)
i4x0_map(0xe4000, 0x04000, val >> 4);
regs[0x5e] = val & 0x77;
break;
case 0x5f: /* PAM6 */
if ((regs[0x5f] ^ val) & 0x0f)
i4x0_map(0xe8000, 0x04000, val & 0xf);
if ((regs[0x5f] ^ val) & 0xf0)
i4x0_map(0xec000, 0x04000, val >> 4);
regs[0x5f] = val & 0x77;
break;
case 0x60: case 0x61: case 0x62: case 0x63: case 0x64:
if ((addr & 0x7) <= dev->max_drb) {
spd_write_drbs(regs, 0x60, 0x60 + dev->max_drb, dev->drb_unit);
break;
}
switch (dev->type) {
case INTEL_420TX: case INTEL_420ZX:
case INTEL_430LX: case INTEL_430NX:
case INTEL_430HX:
case INTEL_440FX:
case INTEL_440LX: case INTEL_440EX:
case INTEL_440BX: case INTEL_440ZX:
case INTEL_440GX:
default:
regs[addr] = val;
break;
case INTEL_430FX: case INTEL_430VX:
regs[addr] = val & 0x3f;
break;
case INTEL_430TX:
regs[addr] = val & 0x7f;
break;
}
break;
case 0x65:
if ((addr & 0x7) <= dev->max_drb) {
spd_write_drbs(regs, 0x60, 0x60 + dev->max_drb, dev->drb_unit);
break;
}
switch (dev->type) {
case INTEL_420TX: case INTEL_420ZX:
case INTEL_430LX: case INTEL_430NX:
case INTEL_430HX:
case INTEL_440FX:
case INTEL_440LX: case INTEL_440EX:
case INTEL_440GX:
case INTEL_440BX: case INTEL_440ZX:
regs[addr] = val;
break;
case INTEL_430VX:
regs[addr] = val & 0x3f;
break;
case INTEL_430TX:
regs[addr] = val & 0x7f;
break;
}
break;
case 0x66:
if ((addr & 0x7) <= dev->max_drb) {
spd_write_drbs(regs, 0x60, 0x60 + dev->max_drb, dev->drb_unit);
break;
}
switch (dev->type) {
case INTEL_430NX: case INTEL_430HX:
case INTEL_440FX: case INTEL_440LX:
case INTEL_440EX: case INTEL_440GX:
case INTEL_440BX: case INTEL_440ZX:
regs[addr] = val;
break;
}
break;
case 0x67:
if ((addr & 0x7) <= dev->max_drb) {
spd_write_drbs(regs, 0x60, 0x60 + dev->max_drb, dev->drb_unit);
break;
}
switch (dev->type) {
case INTEL_430NX: case INTEL_430HX:
case INTEL_440FX:
case INTEL_440LX: case INTEL_440EX:
case INTEL_440BX: case INTEL_440GX:
case INTEL_440ZX:
regs[addr] = val;
break;
case INTEL_430VX:
regs[addr] = val & 0x11;
break;
case INTEL_430TX:
regs[addr] = val & 0xb7;
break;
}
break;
case 0x68:
switch (dev->type) {
case INTEL_430NX: case INTEL_430HX:
case INTEL_430VX: case INTEL_430TX:
regs[0x68] = val;
break;
case INTEL_430FX:
regs[0x68] = val & 0x1f;
break;
case INTEL_440FX:
case INTEL_440LX: case INTEL_440EX:
case INTEL_440GX:
regs[0x68] = val & 0xc0;
break;
case INTEL_440BX:
regs[0x68] = (regs[0x68] & 0x38) | (val & 0xc7);
break;
case INTEL_440ZX:
regs[0x68] = (regs[0x68] & 0x3f) | (val & 0xc0);
break;
}
break;
case 0x69:
switch (dev->type) {
case INTEL_430NX:
case INTEL_440BX: case INTEL_440GX:
regs[0x69] = val;
break;
case INTEL_430VX:
regs[0x69] = val & 0x07;
break;
case INTEL_440ZX:
regs[0x69] = val & 0x3f;
break;
}
break;
case 0x6a: case 0x6b:
switch (dev->type) {
case INTEL_430NX:
case INTEL_440BX: case INTEL_440GX:
regs[addr] = val;
break;
case INTEL_440LX: case INTEL_440EX:
if (addr == 0x6a)
regs[addr] = val & 0xef;
break;
case INTEL_440ZX:
if (addr == 0x6a)
regs[addr] = val & 0xfc;
else
regs[addr] = val & 0x33;
break;
}
break;
case 0x6c: case 0x6d: case 0x6e:
switch (dev->type) {
case INTEL_440LX: case INTEL_440EX:
case INTEL_440BX: case INTEL_440GX:
if (addr != 0x6e)
regs[addr] = val;
break;
case INTEL_440ZX:
if (addr == 0x6c)
regs[addr] = val & 0x03;
else if (addr == 0x6d)
regs[addr] = val & 0xcf;
break;
}
break;
case 0x6f:
switch (dev->type) {
case INTEL_440LX:
regs[addr] = val;
break;
case INTEL_440EX:
regs[addr] = val & 0xcf;
break;
}
break;
case 0x70:
switch (dev->type) {
case INTEL_420TX: case INTEL_420ZX:
case INTEL_430LX:
regs[addr] = val & 0xc7;
break;
case INTEL_430NX:
regs[addr] = val;
break;
case INTEL_430VX: case INTEL_430TX:
regs[addr] = val & 0xfc;
break;
case INTEL_440FX:
case INTEL_440LX: case INTEL_440EX:
regs[addr] = val & 0xf8;
break;
}
break;
case 0x71:
switch (dev->type) {
case INTEL_420TX: case INTEL_420ZX:
case INTEL_430LX:
regs[addr] = val & 0x4d;
break;
case INTEL_430TX:
if (!dev->smram_locked) {
i4x0_smram_handler_phase0(dev);
regs[0x71] = (regs[0x71] & 0x20) | (val & 0xdf);
i4x0_smram_handler_phase1(dev);
}
break;
case INTEL_440EX:
regs[addr] = val;
break;
case INTEL_440FX: case INTEL_440LX:
regs[addr] = val & 0x1f;
break;
}
break;
case 0x72: /* SMRAM */
i4x0_smram_handler_phase0(dev);
if (dev->type >= INTEL_430FX) {
if (dev->smram_locked)
regs[0x72] = (regs[0x72] & 0xdf) | (val & 0x20);
else {
if ((dev->type == INTEL_440LX) || (dev->type == INTEL_440EX) ||
(dev->type == INTEL_440GX))
regs[0x72] = (val & 0x7f);
else
regs[0x72] = (regs[0x72] & 0x87) | (val & 0x78);
dev->smram_locked = (val & 0x10);
if (dev->smram_locked)
regs[0x72] &= 0xbf;
}
} else {
if (dev->smram_locked)
regs[0x72] = (regs[0x72] & 0xef) | (val & 0x10);
else {
regs[0x72] = (regs[0x72] & 0xc0) | (val & 0x3f);
dev->smram_locked = (val & 0x08);
if (dev->smram_locked)
regs[0x72] &= 0xdf;
}
}
i4x0_smram_handler_phase1(dev);
break;
case 0x73:
switch (dev->type) {
case INTEL_430VX:
regs[0x73] = val & 0x03;
break;
case INTEL_440BX: case INTEL_440ZX:
case INTEL_440GX:
if (!dev->smram_locked) {
i4x0_smram_handler_phase0(dev);
regs[0x73] = (regs[0x73] & 0x38) | (val & 0xc7);
i4x0_smram_handler_phase1(dev);
}
break;
}
break;
case 0x74:
switch (dev->type) {
case INTEL_430VX:
case INTEL_440BX: case INTEL_440ZX:
case INTEL_440GX:
regs[0x74] = val;
break;
}
break;
case 0x75: case 0x76:
case 0x7b:
switch (dev->type) {
case INTEL_440BX: case INTEL_440ZX:
case INTEL_440GX:
regs[addr] = val;
}
break;
case 0x77:
switch (dev->type) {
case INTEL_440BX: case INTEL_440ZX:
regs[0x77] = val & 0x03;
}
break;
case 0x78:
switch (dev->type) {
case INTEL_430VX:
regs[0x78] = val & 0xcf;
break;
case INTEL_440BX: case INTEL_440ZX:
regs[0x78] = val & 0x0f;
break;
case INTEL_440GX:
regs[0x78] = val & 0x1f;
break;
}
break;
case 0x79:
switch (dev->type) {
case INTEL_430TX:
regs[0x79] = val & 0x74;
io_removehandler(0x0022, 0x01, pm2_cntrl_read, NULL, NULL, pm2_cntrl_write, NULL, NULL, dev);
if (val & 0x40)
io_sethandler(0x0022, 0x01, pm2_cntrl_read, NULL, NULL, pm2_cntrl_write, NULL, NULL, dev);
break;
case INTEL_440BX: case INTEL_440ZX:
case INTEL_440GX:
regs[0x79] = val;
break;
}
break;
case 0x7a:
switch (dev->type) {
case INTEL_440BX: case INTEL_440ZX:
case INTEL_440GX:
regs[0x7a] = (regs[0x7a] & 0x0a) | (val & 0xf5);
io_removehandler(0x0022, 0x01, pm2_cntrl_read, NULL, NULL, pm2_cntrl_write, NULL, NULL, dev);
if (val & 0x40)
io_sethandler(0x0022, 0x01, pm2_cntrl_read, NULL, NULL, pm2_cntrl_write, NULL, NULL, dev);
break;
}
break;
case 0x7c:
switch (dev->type) {
case INTEL_420TX: case INTEL_420ZX:
case INTEL_430LX: case INTEL_430NX:
regs[0x7c] = val & 0x8f;
break;
case INTEL_440BX: case INTEL_440GX:
case INTEL_440ZX:
regs[0x7c] = val & 0x1f;
break;
}
case 0x7d:
switch (dev->type) {
case INTEL_420TX: case INTEL_420ZX:
case INTEL_430LX: case INTEL_430NX:
regs[0x7d] = val & 0x32;
break;
}
case 0x7e: case 0x7f:
switch (dev->type) {
case INTEL_420TX: case INTEL_420ZX:
case INTEL_430LX: case INTEL_430NX:
regs[addr] = val;
break;
}
case 0x80:
switch (dev->type) {
case INTEL_440BX: case INTEL_440ZX:
case INTEL_440GX:
regs[0x80] &= ~(val & 0x03);
break;
}
break;
case 0x90:
switch (dev->type) {
case INTEL_430HX:
regs[0x90] = val & 0x87;
break;
case INTEL_440FX:
regs[0x90] = val & 0x1b;
break;
case INTEL_440LX:
regs[0x90] = val & 0xfb;
break;
case INTEL_440EX:
regs[0x90] = val & 0xf8;
break;
case INTEL_440BX: case INTEL_440ZX:
case INTEL_440GX:
regs[0x90] = val;
break;
}
break;
case 0x91:
switch (dev->type) {
case INTEL_430HX: case INTEL_440BX:
case INTEL_440FX: case INTEL_440LX:
case INTEL_440GX:
/* Not applicable on 82443EX and 82443ZX. */
regs[0x91] &= ~(val & 0x11);
break;
}
break;
case 0x92:
switch (dev->type) {
case INTEL_440LX: case INTEL_440EX:
regs[0x92] &= ~(val & 0x07);
break;
case INTEL_440BX: case INTEL_440ZX:
case INTEL_440GX:
regs[0x92] &= ~(val & 0x1f);
break;
}
break;
case 0x93:
switch (dev->type) {
case INTEL_440FX:
regs[0x93] = (val & 0x0f);
trc_write(0x0093, val & 0x06, NULL);
break;
case INTEL_440LX: case INTEL_440EX:
regs[0x93] = (val & 0x0e);
trc_write(0x0093, val & 0x06, NULL);
break;
}
break;
case 0xa7:
switch (dev->type) {
case INTEL_440LX: case INTEL_440EX:
regs[0xa7] = val & 0x1f;
break;
}
break;
case 0xa8: case 0xa9:
switch (dev->type) {
case INTEL_440LX: case INTEL_440EX:
case INTEL_440BX: case INTEL_440ZX:
case INTEL_440GX:
regs[addr] = (val & 0x03);
break;
}
break;
case 0xb0:
switch (dev->type) {
case INTEL_440LX: case INTEL_440EX:
case INTEL_440BX: case INTEL_440ZX:
case INTEL_440GX:
regs[0xb0] = (val & 0x80);
break;
}
break;
case 0xb1:
switch (dev->type) {
case INTEL_440LX: case INTEL_440EX:
regs[0xb1] = (val & 0x22);
break;
case INTEL_440BX: case INTEL_440ZX:
case INTEL_440GX:
regs[0xb1] = (val & 0xa0);
break;
}
break;
case 0xb4:
switch (dev->type) {
case INTEL_440LX: case INTEL_440EX:
case INTEL_440BX: case INTEL_440ZX:
case INTEL_440GX:
regs[0xb4] = (val & 0x3f);
i4x0_mask_bar(regs);
break;
}
break;
case 0xb9:
switch (dev->type) {
case INTEL_440LX: case INTEL_440EX:
case INTEL_440BX: case INTEL_440ZX:
case INTEL_440GX:
regs[0xb9] = (val & 0xf0);
break;
}
break;
case 0xba: case 0xbb:
switch (dev->type) {
case INTEL_440LX: case INTEL_440EX:
case INTEL_440BX: case INTEL_440ZX:
case INTEL_440GX:
regs[addr] = val;
break;
}
break;
case 0xbc:
switch (dev->type) {
case INTEL_440LX: case INTEL_440EX:
regs[addr] = (val & 0xf8);
break;
}
break;
case 0xbd:
switch (dev->type) {
case INTEL_440LX: case INTEL_440EX:
regs[addr] = (val & 0xf8);
break;
}
break;
case 0xd0: case 0xd1: case 0xd2: case 0xd3:
case 0xd4: case 0xd5: case 0xd6: case 0xd7:
switch (dev->type) {
case INTEL_440BX: case INTEL_440ZX:
case INTEL_440GX:
regs[addr] = val;
break;
}
break;
case 0xca:
switch (dev->type) {
case INTEL_440BX: case INTEL_440GX:
regs[addr] = val;
break;
case INTEL_440ZX:
regs[addr] = val & 0xe7;
break;
}
break;
case 0xcb:
switch (dev->type) {
case INTEL_440BX: case INTEL_440GX:
regs[addr] = val;
break;
case INTEL_440ZX:
regs[addr] = val & 0xa7;
break;
}
break;
case 0xcc:
switch (dev->type) {
case INTEL_440BX: case INTEL_440GX:
regs[0xcc] = (val & 0x7f);
break;
case INTEL_440ZX:
regs[0xcc] = (val & 0x58);
break;
}
break;
case 0xe0: case 0xe1: case 0xe2: case 0xe3: case 0xe4:
case 0xe8: case 0xe9: case 0xea: case 0xeb: case 0xec:
switch (dev->type) {
case INTEL_440BX: case INTEL_440ZX:
case INTEL_440GX:
if (!regs_l[addr])
regs[addr] = val;
break;
}
break;
case 0xe5: case 0xed:
switch (dev->type) {
case INTEL_440BX: case INTEL_440ZX:
case INTEL_440GX:
if (!regs_l[addr])
regs[addr] = (val & 0x3f);
break;
}
break;
case 0xe7:
switch (dev->type) {
case INTEL_440BX: case INTEL_440ZX:
case INTEL_440GX:
regs[0xe7] = 0x80;
for (i = 0; i < 16; i++)
regs_l[0xe0 + i] = !!(val & 0x80);
if (!regs_l[0xe7]) {
regs[0xe7] |= (val & 0x7f);
}
break;
}
break;
case 0xf0:
switch (dev->type) {
case INTEL_440BX: case INTEL_440ZX:
case INTEL_440GX:
regs[0xf0] = (val & 0xc0);
break;
}
break;
case 0xf1:
switch (dev->type) {
case INTEL_440BX: case INTEL_440ZX:
case INTEL_440GX:
regs[0xf1] = (val & 0x03);
break;
}
break;
}
}
static uint8_t
i4x0_read(int func, int addr, void *priv)
{
i4x0_t *dev = (i4x0_t *) priv;
uint8_t ret = 0xff;
uint8_t *regs = (uint8_t *) dev->regs;
if (func == 0) {
ret = regs[addr];
/* Special behavior for 440FX register 0x93 which is basically TRC in PCI space
with the addition of bits 3 and 0. */
if ((func == 0) && (addr == 0x93) &&
((dev->type == INTEL_440FX) || (dev->type == INTEL_440LX) ||
(dev->type == INTEL_440EX)))
ret = (ret & 0xf9) | (trc_read(0x0093, NULL) & 0x06);
}
return ret;
}
static void
i4x0_reset(void *priv)
{
i4x0_t *dev = (i4x0_t *)priv;
int i;
if (dev->type >= INTEL_430FX)
i4x0_write(0, 0x59, 0x00, priv);
else
i4x0_write(0, 0x59, 0x0f, priv);
for (i = 0; i < 6; i++)
i4x0_write(0, 0x5a + i, 0x00, priv);
for (i = 0; i <= dev->max_drb; i++)
i4x0_write(0, 0x60 + i, dev->drb_default, priv);
if (dev->type >= INTEL_430FX) {
dev->regs[0x72] &= 0xef; /* Forcibly unlock the SMRAM register. */
i4x0_write(0, 0x72, 0x02, priv);
} else {
dev->regs[0x72] &= 0xf7; /* Forcibly unlock the SMRAM register. */
i4x0_write(0, 0x72, 0x00, priv);
}
if ((dev->type == INTEL_440LX) || (dev->type == INTEL_440BX) ||
(dev->type == INTEL_440ZX))
memset(dev->regs_locked, 0x00, 256 * sizeof(uint8_t));
}
static void
i4x0_close(void *p)
{
i4x0_t *dev = (i4x0_t *)p;
smram_del(dev->smram_high);
smram_del(dev->smram_low);
free(dev);
}
static void
*i4x0_init(const device_t *info)
{
i4x0_t *dev = (i4x0_t *) malloc(sizeof(i4x0_t));
uint8_t *regs;
memset(dev, 0, sizeof(i4x0_t));
dev->smram_low = smram_add();
dev->smram_high = smram_add();
dev->type = info->local & 0xff;
regs = (uint8_t *) dev->regs;
regs[0x00] = 0x86; regs[0x01] = 0x80; /*Intel*/
switch (dev->type) {
case INTEL_420TX:
case INTEL_420ZX:
regs[0x02] = 0x83; regs[0x03] = 0x04; /* 82424TX/ZX */
regs[0x06] = 0x40;
regs[0x08] = (dev->type == INTEL_420ZX) ? 0x01 : 0x00;
regs[0x0d] = 0x20;
/* According to information from FreeBSD 3.x source code:
0x00 = 486DX, 0x20 = 486SX, 0x40 = 486DX2 or 486DX4, 0x80 = Pentium OverDrive. */
if (is486sx)
regs[0x50] = 0x20;
else if (is486sx2)
regs[0x50] = 0x60; /* Guess based on the SX, DX, and DX2 values. */
else if (is486dx)
regs[0x50] = 0x00;
else if (is486dx2 || isdx4)
regs[0x50] = 0x40;
else
regs[0x50] = 0x80; /* Pentium OverDrive. */
/* According to information from FreeBSD 3.x source code:
00 = 25 MHz, 01 = 33 MHz. */
if (cpu_busspeed > 25000000)
regs[0x50] |= 0x01;
regs[0x51] = 0x80;
/* According to information from FreeBSD 3.x source code:
0x00 = None, 0x01 = 64 kB, 0x41 = 128 kB, 0x81 = 256 kB, 0xc1 = 512 kB,
If bit 0 is set, then if bit 2 is also set, the cache is write back,
otherwise it's write through. */
regs[0x52] = 0xc3; /* 512 kB writeback cache */
regs[0x57] = 0x31;
regs[0x59] = 0x0f;
regs[0x60] = regs[0x61] = regs[0x62] = regs[0x63] = regs[0x64] = regs[0x65] = 0x02;
dev->max_drb = 5;
dev->drb_unit = 4;
dev->drb_default = 0x02;
break;
case INTEL_430LX:
regs[0x02] = 0xa3; regs[0x03] = 0x04; /* 82434LX/NX */
regs[0x06] = 0x40;
regs[0x08] = 0x03;
regs[0x0d] = 0x20;
regs[0x50] = 0x82;
if (cpu_busspeed <= 60000000)
regs[0x50] |= 0x00;
else if ((cpu_busspeed > 60000000) && (cpu_busspeed <= 66666667))
regs[0x50] |= 0x01;
regs[0x51] = 0x80;
regs[0x52] = 0xea; /* 512 kB burst cache, set to 0xaa for 256 kB */
regs[0x57] = 0x31;
regs[0x59] = 0x0f;
regs[0x60] = regs[0x61] = regs[0x62] = regs[0x63] = regs[0x64] = regs[0x65] = 0x02;
dev->max_drb = 5;
dev->drb_unit = 4;
dev->drb_default = 0x02;
break;
case INTEL_430NX:
regs[0x02] = 0xa3; regs[0x03] = 0x04; /* 82434LX/NX */
regs[0x06] = 0x40;
regs[0x08] = 0x11;
regs[0x0d] = 0x20;
regs[0x50] = 0x80;
if (cpu_busspeed <= 50000000)
regs[0x50] |= 0x01;
else if ((cpu_busspeed > 50000000) && (cpu_busspeed <= 60000000))
regs[0x50] |= 0x02;
else if ((cpu_busspeed > 60000000) && (cpu_busspeed <= 66666667))
regs[0x50] |= 0x03;
regs[0x51] = 0x80;
regs[0x52] = 0xea; /* 512 kB burst cache, set to 0xaa for 256 kB */
regs[0x57] = 0x31;
regs[0x59] = 0x0f;
regs[0x60] = regs[0x61] = regs[0x62] = regs[0x63] = regs[0x64] = regs[0x65] = regs[0x66] = regs[0x67] = 0x02;
dev->max_drb = 7;
dev->drb_unit = 4;
dev->drb_default = 0x02;
break;
case INTEL_430FX:
regs[0x02] = 0x2d; regs[0x03] = 0x12; /* SB82437FX-66 */
regs[0x08] = (info->local >> 8) & 0xff;
regs[0x52] = 0xb2; /* 512 kB PLB cache, set to 0x42 for 256 kB */
if (cpu_busspeed <= 50000000)
regs[0x57] |= 0x01;
else if ((cpu_busspeed > 50000000) && (cpu_busspeed <= 60000000))
regs[0x57] |= 0x02;
else if ((cpu_busspeed > 60000000) && (cpu_busspeed <= 66666667))
regs[0x57] |= 0x03;
regs[0x60] = regs[0x61] = regs[0x62] = regs[0x63] = regs[0x64] = 0x02;
regs[0x72] = 0x02;
dev->max_drb = 4;
dev->drb_unit = 4;
dev->drb_default = 0x02;
break;
case INTEL_430HX:
regs[0x02] = 0x50; regs[0x03] = 0x12; /* 82439HX */
regs[0x52] = 0xb2; /* 512 kB PLB cache, set to 0x42 for 256 kB */
if (cpu_busspeed <= 50000000)
regs[0x57] |= 0x01;
else if ((cpu_busspeed > 50000000) && (cpu_busspeed <= 60000000))
regs[0x57] |= 0x02;
else if ((cpu_busspeed > 60000000) && (cpu_busspeed <= 66666667))
regs[0x57] |= 0x03;
regs[0x60] = regs[0x61] = regs[0x62] = regs[0x63] = regs[0x64] = regs[0x65] = regs[0x66] = regs[0x67] = 0x02;
regs[0x72] = 0x02;
dev->max_drb = 7;
dev->drb_unit = 4;
dev->drb_default = 0x02;
break;
case INTEL_430VX:
regs[0x02] = 0x30; regs[0x03] = 0x70; /* 82437VX */
regs[0x52] = 0xb2; /* 512 kB PLB cache, set to 0x42 for 256 kB */
regs[0x53] = 0x14;
regs[0x56] = 0x52;
if (cpu_busspeed <= 50000000)
regs[0x57] |= 0x01;
else if ((cpu_busspeed > 50000000) && (cpu_busspeed <= 60000000))
regs[0x57] |= 0x02;
else if ((cpu_busspeed > 60000000) && (cpu_busspeed <= 66666667))
regs[0x57] |= 0x03;
regs[0x60] = regs[0x61] = regs[0x62] = regs[0x63] = regs[0x64] = 0x02;
regs[0x67] = 0x11;
regs[0x69] = 0x03;
regs[0x70] = 0x20;
regs[0x72] = 0x02;
regs[0x74] = 0x0e;
regs[0x78] = 0x23;
dev->max_drb = 4;
dev->drb_unit = 4;
dev->drb_default = 0x02;
break;
case INTEL_430TX:
regs[0x02] = 0x00; regs[0x03] = 0x71; /* 82439TX */
regs[0x08] = 0x01;
regs[0x52] = 0xb2; /* 512 kB PLB cache, set to 0x42 for 256 kB */
regs[0x53] = 0x14;
regs[0x56] = 0x52;
regs[0x57] = 0x01;
regs[0x60] = regs[0x61] = regs[0x62] = regs[0x63] = regs[0x64] = regs[0x65] = 0x02;
if (cpu_busspeed <= 60000000)
regs[0x67] |= 0x00;
else if ((cpu_busspeed > 60000000) && (cpu_busspeed <= 66666667))
regs[0x67] |= 0x80;
regs[0x70] = 0x20;
regs[0x72] = 0x02;
dev->max_drb = 5;
dev->drb_unit = 4;
dev->drb_default = 0x02;
break;
case INTEL_440FX:
regs[0x02] = 0x37; regs[0x03] = 0x12; /* 82441FX */
regs[0x08] = 0x02;
if (cpu_busspeed <= 60000000)
regs[0x51] |= 0x01;
else if ((cpu_busspeed > 60000000) && (cpu_busspeed <= 66666667))
regs[0x51] |= 0x02;
regs[0x53] = 0x80;
regs[0x57] = 0x01;
regs[0x58] = 0x10;
regs[0x60] = regs[0x61] = regs[0x62] = regs[0x63] = regs[0x64] = regs[0x65] = regs[0x66] = regs[0x67] = 0x02;
regs[0x71] = 0x10;
regs[0x72] = 0x02;
dev->max_drb = 7;
dev->drb_unit = 8;
dev->drb_default = 0x02;
break;
case INTEL_440LX:
regs[0x02] = 0x80; regs[0x03] = 0x71; /* 82443LX */
regs[0x08] = 0x03;
regs[0x06] = 0x90;
regs[0x10] = 0x08;
regs[0x34] = 0xa0;
if (cpu_busspeed <= 60000000)
regs[0x51] |= 0x40;
else if ((cpu_busspeed > 60000000) && (cpu_busspeed <= 66666667))
regs[0x51] |= 0x00;
regs[0x53] = 0x83;
regs[0x57] = 0x01;
regs[0x60] = regs[0x61] = regs[0x62] = regs[0x63] = regs[0x64] = regs[0x65] = regs[0x66] = regs[0x67] = 0x01;
regs[0x6c] = regs[0x6d] = regs[0x6e] = regs[0x6f] = 0x55;
regs[0x72] = 0x02;
regs[0xa0] = 0x02;
regs[0xa2] = 0x10;
regs[0xa4] = 0x03;
regs[0xa5] = 0x02;
regs[0xa7] = 0x1f;
dev->max_drb = 7;
dev->drb_unit = 8;
dev->drb_default = 0x01;
break;
case INTEL_440EX:
regs[0x02] = 0x80; regs[0x03] = 0x71; /* 82443EX. Same Vendor ID as 440LX */
regs[0x08] = 0x03;
regs[0x06] = 0x90;
regs[0x10] = 0x08;
regs[0x34] = 0xa0;
regs[0x51] = 0x80;
regs[0x53] = 0x83;
regs[0x57] = 0x01;
regs[0x60] = regs[0x61] = regs[0x62] = regs[0x63] = regs[0x64] = regs[0x65] = regs[0x66] = regs[0x67] = 0x01;
regs[0x6c] = regs[0x6d] = regs[0x6e] = regs[0x6f] = 0x55;
regs[0x72] = 0x02;
regs[0xa0] = 0x02;
regs[0xa2] = 0x10;
regs[0xa4] = 0x03;
regs[0xa5] = 0x02;
regs[0xa7] = 0x1f;
dev->max_drb = 7;
dev->drb_unit = 8;
dev->drb_default = 0x01;
break;
case INTEL_440BX: case INTEL_440ZX:
regs[0x7a] = (info->local >> 8) & 0xff;
regs[0x02] = (regs[0x7a] & 0x02) ? 0x92 : 0x90; regs[0x03] = 0x71; /* 82443BX */
regs[0x06] = (regs[0x7a] & 0x02) ? 0x00 : 0x10;
regs[0x08] = 0x02;
regs[0x10] = 0x08;
regs[0x34] = (regs[0x7a] & 0x02) ? 0x00 : 0xa0;
if (cpu_busspeed <= 66666667)
regs[0x51] |= 0x20;
else if ((cpu_busspeed > 66666667) && (cpu_busspeed <= 100000000))
regs[0x51] |= 0x00;
regs[0x57] = 0x28; /* 4 DIMMs, SDRAM */
regs[0x58] = 0x03;
regs[0x60] = regs[0x61] = regs[0x62] = regs[0x63] = regs[0x64] = regs[0x65] = regs[0x66] = regs[0x67] = 0x01;
regs[0x72] = 0x02;
regs[0x73] = 0x38;
regs[0x7b] = 0x38;
regs[0x90] = 0x80;
regs[0xa0] = (regs[0x7a] & 0x02) ? 0x00 : 0x02;
regs[0xa2] = (regs[0x7a] & 0x02) ? 0x00 : 0x10;
regs[0xa4] = 0x03;
regs[0xa5] = 0x02;
regs[0xa7] = 0x1f;
dev->max_drb = 7;
dev->drb_unit = 8;
dev->drb_default = 0x01;
break;
case INTEL_440GX:
regs[0x7a] = (info->local >> 8) & 0xff;
regs[0x02] = (regs[0x7a] & 0x02) ? 0xa2 : 0xa0; regs[0x03] = 0x71; /* 82443GX */
regs[0x06] = (regs[0x7a] & 0x02) ? 0x00 : 0x10;
regs[0x10] = 0x08;
regs[0x34] = (regs[0x7a] & 0x02) ? 0x00 : 0xa0;
regs[0x57] = 0x28;
regs[0x60] = regs[0x61] = regs[0x62] = regs[0x63] = regs[0x64] = regs[0x65] = regs[0x66] = regs[0x67] = 0x01;
regs[0x72] = 0x02;
regs[0x73] = 0x38;
regs[0x7b] = 0x38;
regs[0x90] = 0x80;
regs[0xa0] = (regs[0x7a] & 0x02) ? 0x00 : 0x02;
regs[0xa2] = (regs[0x7a] & 0x02) ? 0x00 : 0x10;
regs[0xa4] = 0x03;
regs[0xa5] = 0x02;
regs[0xa7] = 0x1f;
dev->max_drb = 7;
dev->drb_unit = 8;
dev->drb_default = 0x01;
break;
}
regs[0x04] = 0x06; regs[0x07] = 0x02;
regs[0x0b] = 0x06;
if (dev->type >= INTEL_440FX) {
cpu_cache_ext_enabled = 1;
cpu_update_waitstates();
}
i4x0_write(regs[0x59], 0x59, 0x00, dev);
i4x0_write(regs[0x5a], 0x5a, 0x00, dev);
i4x0_write(regs[0x5b], 0x5b, 0x00, dev);
i4x0_write(regs[0x5c], 0x5c, 0x00, dev);
i4x0_write(regs[0x5d], 0x5d, 0x00, dev);
i4x0_write(regs[0x5e], 0x5e, 0x00, dev);
i4x0_write(regs[0x5f], 0x5f, 0x00, dev);
i4x0_write(regs[0x72], 0x72, 0x00, dev);
pci_add_card(PCI_ADD_NORTHBRIDGE, i4x0_read, i4x0_write, dev);
if ((dev->type >= INTEL_440BX) && !(regs[0x7a] & 0x02))
device_add((dev->type == INTEL_440GX) ? &i440gx_agp_device : &i440bx_agp_device);
else if (dev->type >= INTEL_440LX)
device_add(&i440lx_agp_device);
return dev;
}
const device_t i420tx_device =
{
"Intel 82424TX",
DEVICE_PCI,
INTEL_420TX,
i4x0_init,
i4x0_close,
i4x0_reset,
{ NULL },
NULL,
NULL,
NULL
};
const device_t i420zx_device =
{
"Intel 82424ZX",
DEVICE_PCI,
INTEL_420ZX,
i4x0_init,
i4x0_close,
i4x0_reset,
{ NULL },
NULL,
NULL,
NULL
};
const device_t i430lx_device =
{
"Intel 82434LX",
DEVICE_PCI,
INTEL_430LX,
i4x0_init,
i4x0_close,
i4x0_reset,
{ NULL },
NULL,
NULL,
NULL
};
const device_t i430nx_device =
{
"Intel 82434NX",
DEVICE_PCI,
INTEL_430NX,
i4x0_init,
i4x0_close,
i4x0_reset,
{ NULL },
NULL,
NULL,
NULL
};
const device_t i430fx_device =
{
"Intel SB82437FX-66",
DEVICE_PCI,
INTEL_430FX,
i4x0_init,
i4x0_close,
i4x0_reset,
{ NULL },
NULL,
NULL,
NULL
};
const device_t i430fx_rev02_device =
{
"Intel SB82437FX-66 (Rev. 02)",
DEVICE_PCI,
0x0200 | INTEL_430FX,
i4x0_init,
i4x0_close,
i4x0_reset,
{ NULL },
NULL,
NULL,
NULL
};
const device_t i430hx_device =
{
"Intel 82439HX",
DEVICE_PCI,
INTEL_430HX,
i4x0_init,
i4x0_close,
i4x0_reset,
{ NULL },
NULL,
NULL,
NULL
};
const device_t i430vx_device =
{
"Intel 82437VX",
DEVICE_PCI,
INTEL_430VX,
i4x0_init,
i4x0_close,
i4x0_reset,
{ NULL },
NULL,
NULL,
NULL
};
const device_t i430tx_device =
{
"Intel 82439TX",
DEVICE_PCI,
INTEL_430TX,
i4x0_init,
i4x0_close,
i4x0_reset,
{ NULL },
NULL,
NULL,
NULL
};
const device_t i440fx_device =
{
"Intel 82441FX",
DEVICE_PCI,
INTEL_440FX,
i4x0_init,
i4x0_close,
i4x0_reset,
{ NULL },
NULL,
NULL,
NULL
};
const device_t i440lx_device =
{
"Intel 82443LX",
DEVICE_PCI,
INTEL_440LX,
i4x0_init,
i4x0_close,
i4x0_reset,
{ NULL },
NULL,
NULL,
NULL
};
const device_t i440ex_device =
{
"Intel 82443EX",
DEVICE_PCI,
INTEL_440EX,
i4x0_init,
i4x0_close,
i4x0_reset,
{ NULL },
NULL,
NULL,
NULL
};
const device_t i440bx_device =
{
"Intel 82443BX",
DEVICE_PCI,
0x8000 | INTEL_440BX,
i4x0_init,
i4x0_close,
i4x0_reset,
{ NULL },
NULL,
NULL,
NULL
};
const device_t i440gx_device =
{
"Intel 82443GX",
DEVICE_PCI,
0x8000 | INTEL_440GX,
i4x0_init,
i4x0_close,
i4x0_reset,
{ NULL },
NULL,
NULL,
NULL
};
const device_t i440zx_device =
{
"Intel 82443ZX",
DEVICE_PCI,
0x8000 | INTEL_440ZX,
i4x0_init,
i4x0_close,
i4x0_reset,
{ NULL },
NULL,
NULL,
NULL
};