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53c1d684fb91be4f3497831c0cb027177f03b241
86Box/src/chipset/sis_85c4xx.c

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PIC rewrite, proper SMRAM API, complete SiS 471 rewrite and addition of 40x, 460, and 461, changes to mem.c/h, disabled Voodoo memory dumping on exit, bumped SDL Hardware scale quality to 2, bumped IDE/ATAPI drives to ATA-6, finally bumped emulator version to 3.0, redid the bus type ID's to allow for planned ATAPI hard disks, made SST flash set its high mappings to the correct address if the CPU is 16-bit, and added the SiS 401 AMI 486 Clone, AOpen Vi15G, and the Soyo 4SA2 (486 with SiS 496/497 that can boot from CD-ROM), assorted 286+ protected mode fixes (for slightly more accuracy), and fixes to 808x emulation (MS Word 1.0 and 1.10 for DOS now work correctly from floppy).
2020-10-14 23:15:01 +02:00
/*
* 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.
*
* Emulation of the SiS 85c401/85c402, 85c460, 85c461, and
* 85c407/85c471 chipsets.
*
* Authors: Miran Grca, <mgrca8@gmail.com>
*
* Copyright 2019,2020 Miran Grca.
*/
#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <wchar.h>
#define HAVE_STDARG_H
#include <86box/86box.h>
#include "cpu.h"
#include <86box/timer.h>
#include <86box/io.h>
#include <86box/device.h>
#include <86box/keyboard.h>
#include <86box/timer.h>
#include <86box/port_92.h>
#include <86box/mem.h>
#include <86box/smram.h>
#include <86box/fdd.h>
#include <86box/fdc.h>
#include <86box/pic.h>
#include <86box/machine.h>
#include <86box/chipset.h>
typedef struct
{
uint8_t cur_reg, tries,
reg_base, reg_last,
is_471,
regs[39], scratch[2];
smram_t *smram;
port_92_t *port_92;
} sis_85c4xx_t;
static void
sis_85c4xx_recalcmapping(sis_85c4xx_t *dev)
{
uint32_t base;
uint32_t i, shflags = 0;
uint32_t readext, writeext;
uint8_t romcs = 0xc0, cur_romcs;
shadowbios = 0;
shadowbios_write = 0;
if (dev->regs[0x03] & 0x40)
romcs |= 0x01;
if (dev->regs[0x03] & 0x80)
romcs |= 0x30;
if (dev->regs[0x08] & 0x04)
romcs |= 0x02;
for (i = 0; i < 8; i++) {
base = 0xc0000 + (i << 15);
cur_romcs = romcs & (1 << i);
readext = cur_romcs ? MEM_READ_EXTANY : MEM_READ_EXTERNAL;
writeext = cur_romcs ? MEM_WRITE_EXTANY : MEM_WRITE_EXTERNAL;
if ((i > 5) || (dev->regs[0x02] & (1 << i))) {
shadowbios |= (base >= 0xe0000) && (dev->regs[0x02] & 0x80);
shadowbios_write |= (base >= 0xe0000) && !(dev->regs[0x02] & 0x40);
shflags = (dev->regs[0x02] & 0x80) ? MEM_READ_INTERNAL : readext;
shflags |= (dev->regs[0x02] & 0x40) ? writeext : MEM_WRITE_INTERNAL;
mem_set_mem_state(base, 0x8000, shflags);
} else
mem_set_mem_state(base, 0x8000, readext | writeext);
}
flushmmucache();
}
static void
sis_85c4xx_sw_smi_out(uint16_t port, uint8_t val, void *priv)
{
sis_85c4xx_t *dev = (sis_85c4xx_t *) priv;
if (dev->regs[0x18] & 0x02) {
if (dev->regs[0x0b] & 0x10)
smi_line = 1;
else
picint(1 << ((dev->regs[0x0b] & 0x08) ? 15 : 12));
soft_reset_mask = 1;
dev->regs[0x19] |= 0x02;
}
}
static void
sis_85c4xx_sw_smi_handler(sis_85c4xx_t *dev)
{
uint16_t addr;
if (!dev->is_471)
return;
addr = dev->regs[0x14] | (dev->regs[0x15] << 8);
io_handler((dev->regs[0x0b] & 0x80) && (dev->regs[0x18] & 0x02), addr, 0x0001,
NULL, NULL, NULL, sis_85c4xx_sw_smi_out, NULL, NULL, dev);
}
static void
sis_85c4xx_out(uint16_t port, uint8_t val, void *priv)
{
sis_85c4xx_t *dev = (sis_85c4xx_t *) priv;
uint8_t rel_reg = dev->cur_reg - dev->reg_base;
uint8_t valxor = 0x00;
uint32_t host_base = 0x000e0000, ram_base = 0x000a0000;
switch (port) {
case 0x22:
dev->cur_reg = val;
break;
case 0x23:
if ((dev->cur_reg >= dev->reg_base) && (dev->cur_reg <= dev->reg_last)) {
valxor = val ^ dev->regs[rel_reg];
if (rel_reg == 0x19)
dev->regs[rel_reg] &= ~val;
else
dev->regs[rel_reg] = val;
switch (rel_reg) {
case 0x01:
cpu_cache_ext_enabled = ((val & 0x84) == 0x84);
cpu_update_waitstates();
break;
case 0x02: case 0x03:
case 0x08:
sis_85c4xx_recalcmapping(dev);
break;
case 0x0b:
sis_85c4xx_sw_smi_handler(dev);
if (dev->is_471 && (valxor & 0x02)) {
if (val & 0x02)
mem_remap_top(0);
else
mem_remap_top(256);
}
break;
case 0x13:
if (dev->is_471 && (valxor & 0xf0)) {
smram_disable(dev->smram);
host_base = (val & 0x80) ? 0x00060000 : 0x000e0000;
switch ((val >> 5) & 0x03) {
case 0x00:
ram_base = 0x000a0000;
break;
case 0x01:
ram_base = 0x000b0000;
break;
case 0x02:
ram_base = (val & 0x80) ? 0x00000000 : 0x000e0000;
break;
default:
ram_base = 0x00000000;
break;
}
if (ram_base != 0x00000000)
smram_enable(dev->smram, host_base, ram_base, 0x00010000, (val & 0x10), 1);
}
break;
case 0x14: case 0x15:
case 0x18:
sis_85c4xx_sw_smi_handler(dev);
break;
case 0x1c:
if (dev->is_471)
soft_reset_mask = 0;
break;
case 0x22:
if (dev->is_471 && (valxor & 0x01)) {
port_92_remove(dev->port_92);
if (val & 0x01)
port_92_add(dev->port_92);
}
break;
}
}
dev->cur_reg = 0x00;
break;
case 0xe1: case 0xe2:
dev->scratch[port - 0xe1] = val;
return;
}
}
static uint8_t
sis_85c4xx_in(uint16_t port, void *priv)
{
sis_85c4xx_t *dev = (sis_85c4xx_t *) priv;
uint8_t rel_reg = dev->cur_reg - dev->reg_base;
uint8_t ret = 0xff;
switch (port) {
case 0x23:
if (dev->is_471 && (dev->cur_reg == 0x1c))
ret = inb(0x70);
if ((dev->cur_reg >= dev->reg_base) && (dev->cur_reg <= dev->reg_last))
ret = dev->regs[rel_reg];
dev->cur_reg = 0x00;
break;
case 0xe1: case 0xe2:
ret = dev->scratch[port - 0xe1];
}
return ret;
}
static void
sis_85c4xx_close(void *priv)
{
sis_85c4xx_t *dev = (sis_85c4xx_t *) priv;
if (dev->is_471)
smram_del(dev->smram);
free(dev);
}
static void *
sis_85c4xx_init(const device_t *info)
{
int mem_size_mb;
sis_85c4xx_t *dev = (sis_85c4xx_t *) malloc(sizeof(sis_85c4xx_t));
memset(dev, 0, sizeof(sis_85c4xx_t));
dev->is_471 = (info->local >> 8) & 0xff;
dev->reg_base = info->local & 0xff;
mem_size_mb = mem_size >> 10;
Programmatic CPU table
2020-11-18 01:09:17 -03:00
if (cpu_s->rspeed < 25000000)
PIC rewrite, proper SMRAM API, complete SiS 471 rewrite and addition of 40x, 460, and 461, changes to mem.c/h, disabled Voodoo memory dumping on exit, bumped SDL Hardware scale quality to 2, bumped IDE/ATAPI drives to ATA-6, finally bumped emulator version to 3.0, redid the bus type ID's to allow for planned ATAPI hard disks, made SST flash set its high mappings to the correct address if the CPU is 16-bit, and added the SiS 401 AMI 486 Clone, AOpen Vi15G, and the Soyo 4SA2 (486 with SiS 496/497 that can boot from CD-ROM), assorted 286+ protected mode fixes (for slightly more accuracy), and fixes to 808x emulation (MS Word 1.0 and 1.10 for DOS now work correctly from floppy).
2020-10-14 23:15:01 +02:00
dev->regs[0x08] = 0x80;
if (dev->is_471) {
dev->reg_last = dev->reg_base + 0x76;
dev->regs[0x09] = 0x40;
switch (mem_size_mb) {
case 0: case 1:
dev->regs[0x09] |= 0x00;
break;
case 2: case 3:
dev->regs[0x09] |= 0x01;
break;
case 4:
dev->regs[0x09] |= 0x02;
break;
case 5:
dev->regs[0x09] |= 0x20;
break;
case 6: case 7:
dev->regs[0x09] |= 0x09;
break;
case 8: case 9:
dev->regs[0x09] |= 0x04;
break;
case 10: case 11:
dev->regs[0x09] |= 0x05;
break;
case 12: case 13: case 14: case 15:
dev->regs[0x09] |= 0x0b;
break;
case 16:
dev->regs[0x09] |= 0x13;
break;
case 17:
dev->regs[0x09] |= 0x21;
break;
case 18: case 19:
dev->regs[0x09] |= 0x06;
break;
case 20: case 21: case 22: case 23:
dev->regs[0x09] |= 0x0d;
break;
case 24: case 25: case 26: case 27:
case 28: case 29: case 30: case 31:
dev->regs[0x09] |= 0x0e;
break;
case 32: case 33: case 34: case 35:
dev->regs[0x09] |= 0x1b;
break;
case 36: case 37: case 38: case 39:
dev->regs[0x09] |= 0x0f;
break;
case 40: case 41: case 42: case 43:
case 44: case 45: case 46: case 47:
dev->regs[0x09] |= 0x17;
break;
case 48:
dev->regs[0x09] |= 0x1e;
break;
default:
if (mem_size_mb < 64)
dev->regs[0x09] |= 0x1e;
else if ((mem_size_mb >= 65) && (mem_size_mb < 68))
dev->regs[0x09] |= 0x22;
else
dev->regs[0x09] |= 0x24;
break;
}
dev->regs[0x11] = 0x09;
dev->regs[0x12] = 0xff;
dev->regs[0x1f] = 0x20; /* Video access enabled. */
dev->regs[0x23] = 0xf0;
dev->regs[0x26] = 0x01;
dev->smram = smram_add();
smram_enable(dev->smram, 0x000e0000, 0x000a0000, 0x00010000, 0, 1);
dev->port_92 = device_add(&port_92_device);
port_92_remove(dev->port_92);
} else {
dev->reg_last = dev->reg_base + 0x11;
switch (mem_size_mb) {
case 1:
default:
dev->regs[0x00] = 0x00;
break;
case 2:
dev->regs[0x00] = 0x01;
break;
case 4:
dev->regs[0x00] = 0x02;
break;
case 6:
dev->regs[0x00] = 0x03;
break;
case 8:
dev->regs[0x00] = 0x04;
break;
case 10:
dev->regs[0x00] = 0x05;
break;
case 12:
dev->regs[0x00] = 0x0b;
break;
case 16:
dev->regs[0x00] = 0x19;
break;
case 18:
dev->regs[0x00] = 0x06;
break;
case 20:
dev->regs[0x00] = 0x14;
break;
case 24:
dev->regs[0x00] = 0x15;
break;
case 32:
dev->regs[0x00] = 0x1b;
break;
case 36:
dev->regs[0x00] = 0x16;
break;
case 40:
dev->regs[0x00] = 0x17;
break;
case 48:
dev->regs[0x00] = 0x1e;
break;
case 64:
dev->regs[0x00] = 0x1f;
break;
}
dev->regs[0x11] = 0x01;
}
io_sethandler(0x0022, 0x0002,
sis_85c4xx_in, NULL, NULL, sis_85c4xx_out, NULL, NULL, dev);
dev->scratch[0] = dev->scratch[1] = 0xff;
io_sethandler(0x00e1, 0x0002,
sis_85c4xx_in, NULL, NULL, sis_85c4xx_out, NULL, NULL, dev);
sis_85c4xx_recalcmapping(dev);
return dev;
}
const device_t sis_85c401_device = {
"SiS 85c401/85c402",
0,
0x060,
sis_85c4xx_init, sis_85c4xx_close, NULL,
WARNING: CONFIGS MIGHT PARTIALLY BREAK WHERE DEVICE NAMES HAVE CHANGED. Changes to device_t struct to accomodate the upcoming PCI IRQ arbitration rewrite; Added device.c/h API to obtain name from the device_t struct; Significant changes to win/win_settings.c to clean up the code a bit and fix bugs; Ported all the CPU and AudioPCI commits from PCem; Added an API call to allow ACPI soft power off to gracefully stop the emulator; Removed the Siemens PCD-2L from the Dev branch because it now works; Removed the Socket 5 HP Vectra from the Dev branch because it now works; Fixed the Compaq Presario and the Micronics Spitfire; Give the IBM PC330 its own list of 486 CPU so it can have DX2's with CPUID 0x470; SMM fixes; Rewrote the SYSENTER, SYSEXIT, SYSCALL, and SYSRET instructions; Changed IDE reset period to match the specification, fixes #929; The keyboard input and output ports are now forced in front of the queue when read, fixes a number of bugs, including the AMI Apollo hanging on soft reset; Added the Intel AN430TX but Dev branched because it does not work; The network code no longer drops packets if the emulated network card has failed to receive them (eg. when the buffer is full); Changes to PCI card adding and renamed some PCI slot types, also added proper AGP bridge slot types; USB UHCI emulation is no longer a stub (still doesn't fully work, but at least Windows XP chk with Debug no longer ASSERT's on it); Fixed NVR on the the SMC FDC37C932QF and APM variants; A number of fixes to Intel 4x0 chipsets, including fixing every register of the 440LX and 440EX; Some ACPI changes.
2020-11-16 00:01:21 +01:00
{ NULL }, NULL, NULL,
PIC rewrite, proper SMRAM API, complete SiS 471 rewrite and addition of 40x, 460, and 461, changes to mem.c/h, disabled Voodoo memory dumping on exit, bumped SDL Hardware scale quality to 2, bumped IDE/ATAPI drives to ATA-6, finally bumped emulator version to 3.0, redid the bus type ID's to allow for planned ATAPI hard disks, made SST flash set its high mappings to the correct address if the CPU is 16-bit, and added the SiS 401 AMI 486 Clone, AOpen Vi15G, and the Soyo 4SA2 (486 with SiS 496/497 that can boot from CD-ROM), assorted 286+ protected mode fixes (for slightly more accuracy), and fixes to 808x emulation (MS Word 1.0 and 1.10 for DOS now work correctly from floppy).
2020-10-14 23:15:01 +02:00
NULL
};
const device_t sis_85c460_device = {
"SiS 85c460",
0,
0x050,
sis_85c4xx_init, sis_85c4xx_close, NULL,
WARNING: CONFIGS MIGHT PARTIALLY BREAK WHERE DEVICE NAMES HAVE CHANGED. Changes to device_t struct to accomodate the upcoming PCI IRQ arbitration rewrite; Added device.c/h API to obtain name from the device_t struct; Significant changes to win/win_settings.c to clean up the code a bit and fix bugs; Ported all the CPU and AudioPCI commits from PCem; Added an API call to allow ACPI soft power off to gracefully stop the emulator; Removed the Siemens PCD-2L from the Dev branch because it now works; Removed the Socket 5 HP Vectra from the Dev branch because it now works; Fixed the Compaq Presario and the Micronics Spitfire; Give the IBM PC330 its own list of 486 CPU so it can have DX2's with CPUID 0x470; SMM fixes; Rewrote the SYSENTER, SYSEXIT, SYSCALL, and SYSRET instructions; Changed IDE reset period to match the specification, fixes #929; The keyboard input and output ports are now forced in front of the queue when read, fixes a number of bugs, including the AMI Apollo hanging on soft reset; Added the Intel AN430TX but Dev branched because it does not work; The network code no longer drops packets if the emulated network card has failed to receive them (eg. when the buffer is full); Changes to PCI card adding and renamed some PCI slot types, also added proper AGP bridge slot types; USB UHCI emulation is no longer a stub (still doesn't fully work, but at least Windows XP chk with Debug no longer ASSERT's on it); Fixed NVR on the the SMC FDC37C932QF and APM variants; A number of fixes to Intel 4x0 chipsets, including fixing every register of the 440LX and 440EX; Some ACPI changes.
2020-11-16 00:01:21 +01:00
{ NULL }, NULL, NULL,
PIC rewrite, proper SMRAM API, complete SiS 471 rewrite and addition of 40x, 460, and 461, changes to mem.c/h, disabled Voodoo memory dumping on exit, bumped SDL Hardware scale quality to 2, bumped IDE/ATAPI drives to ATA-6, finally bumped emulator version to 3.0, redid the bus type ID's to allow for planned ATAPI hard disks, made SST flash set its high mappings to the correct address if the CPU is 16-bit, and added the SiS 401 AMI 486 Clone, AOpen Vi15G, and the Soyo 4SA2 (486 with SiS 496/497 that can boot from CD-ROM), assorted 286+ protected mode fixes (for slightly more accuracy), and fixes to 808x emulation (MS Word 1.0 and 1.10 for DOS now work correctly from floppy).
2020-10-14 23:15:01 +02:00
NULL
};
/* TODO: Log to make sure the registers are correct. */
const device_t sis_85c461_device = {
"SiS 85c461",
0,
0x050,
sis_85c4xx_init, sis_85c4xx_close, NULL,
WARNING: CONFIGS MIGHT PARTIALLY BREAK WHERE DEVICE NAMES HAVE CHANGED. Changes to device_t struct to accomodate the upcoming PCI IRQ arbitration rewrite; Added device.c/h API to obtain name from the device_t struct; Significant changes to win/win_settings.c to clean up the code a bit and fix bugs; Ported all the CPU and AudioPCI commits from PCem; Added an API call to allow ACPI soft power off to gracefully stop the emulator; Removed the Siemens PCD-2L from the Dev branch because it now works; Removed the Socket 5 HP Vectra from the Dev branch because it now works; Fixed the Compaq Presario and the Micronics Spitfire; Give the IBM PC330 its own list of 486 CPU so it can have DX2's with CPUID 0x470; SMM fixes; Rewrote the SYSENTER, SYSEXIT, SYSCALL, and SYSRET instructions; Changed IDE reset period to match the specification, fixes #929; The keyboard input and output ports are now forced in front of the queue when read, fixes a number of bugs, including the AMI Apollo hanging on soft reset; Added the Intel AN430TX but Dev branched because it does not work; The network code no longer drops packets if the emulated network card has failed to receive them (eg. when the buffer is full); Changes to PCI card adding and renamed some PCI slot types, also added proper AGP bridge slot types; USB UHCI emulation is no longer a stub (still doesn't fully work, but at least Windows XP chk with Debug no longer ASSERT's on it); Fixed NVR on the the SMC FDC37C932QF and APM variants; A number of fixes to Intel 4x0 chipsets, including fixing every register of the 440LX and 440EX; Some ACPI changes.
2020-11-16 00:01:21 +01:00
{ NULL }, NULL, NULL,
PIC rewrite, proper SMRAM API, complete SiS 471 rewrite and addition of 40x, 460, and 461, changes to mem.c/h, disabled Voodoo memory dumping on exit, bumped SDL Hardware scale quality to 2, bumped IDE/ATAPI drives to ATA-6, finally bumped emulator version to 3.0, redid the bus type ID's to allow for planned ATAPI hard disks, made SST flash set its high mappings to the correct address if the CPU is 16-bit, and added the SiS 401 AMI 486 Clone, AOpen Vi15G, and the Soyo 4SA2 (486 with SiS 496/497 that can boot from CD-ROM), assorted 286+ protected mode fixes (for slightly more accuracy), and fixes to 808x emulation (MS Word 1.0 and 1.10 for DOS now work correctly from floppy).
2020-10-14 23:15:01 +02:00
NULL
};
const device_t sis_85c471_device = {
"SiS 85c407/85c471",
0,
0x150,
sis_85c4xx_init, sis_85c4xx_close, NULL,
WARNING: CONFIGS MIGHT PARTIALLY BREAK WHERE DEVICE NAMES HAVE CHANGED. Changes to device_t struct to accomodate the upcoming PCI IRQ arbitration rewrite; Added device.c/h API to obtain name from the device_t struct; Significant changes to win/win_settings.c to clean up the code a bit and fix bugs; Ported all the CPU and AudioPCI commits from PCem; Added an API call to allow ACPI soft power off to gracefully stop the emulator; Removed the Siemens PCD-2L from the Dev branch because it now works; Removed the Socket 5 HP Vectra from the Dev branch because it now works; Fixed the Compaq Presario and the Micronics Spitfire; Give the IBM PC330 its own list of 486 CPU so it can have DX2's with CPUID 0x470; SMM fixes; Rewrote the SYSENTER, SYSEXIT, SYSCALL, and SYSRET instructions; Changed IDE reset period to match the specification, fixes #929; The keyboard input and output ports are now forced in front of the queue when read, fixes a number of bugs, including the AMI Apollo hanging on soft reset; Added the Intel AN430TX but Dev branched because it does not work; The network code no longer drops packets if the emulated network card has failed to receive them (eg. when the buffer is full); Changes to PCI card adding and renamed some PCI slot types, also added proper AGP bridge slot types; USB UHCI emulation is no longer a stub (still doesn't fully work, but at least Windows XP chk with Debug no longer ASSERT's on it); Fixed NVR on the the SMC FDC37C932QF and APM variants; A number of fixes to Intel 4x0 chipsets, including fixing every register of the 440LX and 440EX; Some ACPI changes.
2020-11-16 00:01:21 +01:00
{ NULL }, NULL, NULL,
PIC rewrite, proper SMRAM API, complete SiS 471 rewrite and addition of 40x, 460, and 461, changes to mem.c/h, disabled Voodoo memory dumping on exit, bumped SDL Hardware scale quality to 2, bumped IDE/ATAPI drives to ATA-6, finally bumped emulator version to 3.0, redid the bus type ID's to allow for planned ATAPI hard disks, made SST flash set its high mappings to the correct address if the CPU is 16-bit, and added the SiS 401 AMI 486 Clone, AOpen Vi15G, and the Soyo 4SA2 (486 with SiS 496/497 that can boot from CD-ROM), assorted 286+ protected mode fixes (for slightly more accuracy), and fixes to 808x emulation (MS Word 1.0 and 1.10 for DOS now work correctly from floppy).
2020-10-14 23:15:01 +02:00
NULL
};
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