All the current WIP work (warning: the PIT is currently using some temporary test rewrite that is going to be undone).

This commit is contained in:
OBattler
2021-06-29 19:11:19 +02:00
parent a148d1fdda
commit fd4817a87b
77 changed files with 11754 additions and 3381 deletions

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@@ -14,7 +14,7 @@
#
add_library(sio OBJECT sio_acc3221.c sio_f82c710.c sio_82091aa.c sio_fdc37c651.c sio_fdc37c661.c
sio_fdc37c66x.c sio_fdc37c669.c sio_fdc37c93x.c sio_fdc37m60x.c
sio_fdc37c66x.c sio_fdc37c67x.c sio_fdc37c669.c sio_fdc37c93x.c sio_fdc37m60x.c
sio_it8661f.c
sio_pc87306.c sio_pc87307.c sio_pc87309.c sio_pc87310.c sio_pc87311.c sio_pc87332.c
sio_prime3b.c sio_prime3c.c

613
src/sio/sio_fdc37c67x.c Normal file
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@@ -0,0 +1,613 @@
/*
* 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 SMC FDC37C67X Super I/O Chip.
*
*
*
* Author: Miran Grca, <mgrca8@gmail.com>
* Copyright 2016-2018 Miran Grca.
*/
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <wchar.h>
#include <86box/86box.h>
#include <86box/io.h>
#include <86box/timer.h>
#include <86box/device.h>
#include <86box/pic.h>
#include <86box/pci.h>
#include <86box/lpt.h>
#include <86box/serial.h>
#include <86box/hdc.h>
#include <86box/hdc_ide.h>
#include <86box/fdd.h>
#include <86box/fdc.h>
#include "cpu.h"
#include <86box/sio.h>
#define AB_RST 0x80
typedef struct {
uint8_t chip_id, is_apm,
tries,
gpio_regs[2], auxio_reg,
regs[48],
ld_regs[11][256];
uint16_t gpio_base, /* Set to EA */
auxio_base, sio_base;
int locked,
cur_reg;
fdc_t *fdc;
serial_t *uart[2];
} fdc37c67x_t;
static void fdc37c67x_write(uint16_t port, uint8_t val, void *priv);
static uint8_t fdc37c67x_read(uint16_t port, void *priv);
static uint16_t
make_port(fdc37c67x_t *dev, uint8_t ld)
{
uint16_t r0 = dev->ld_regs[ld][0x60];
uint16_t r1 = dev->ld_regs[ld][0x61];
uint16_t p = (r0 << 8) + r1;
return p;
}
static uint8_t
fdc37c67x_auxio_read(uint16_t port, void *priv)
{
fdc37c67x_t *dev = (fdc37c67x_t *) priv;
return dev->auxio_reg;
}
static void
fdc37c67x_auxio_write(uint16_t port, uint8_t val, void *priv)
{
fdc37c67x_t *dev = (fdc37c67x_t *) priv;
dev->auxio_reg = val;
}
static uint8_t
fdc37c67x_gpio_read(uint16_t port, void *priv)
{
fdc37c67x_t *dev = (fdc37c67x_t *) priv;
uint8_t ret = 0xff;
ret = dev->gpio_regs[port & 1];
return ret;
}
static void
fdc37c67x_gpio_write(uint16_t port, uint8_t val, void *priv)
{
fdc37c67x_t *dev = (fdc37c67x_t *) priv;
if (!(port & 1))
dev->gpio_regs[0] = (dev->gpio_regs[0] & 0xfc) | (val & 0x03);
}
static void
fdc37c67x_fdc_handler(fdc37c67x_t *dev)
{
uint16_t ld_port = 0;
uint8_t global_enable = !!(dev->regs[0x22] & (1 << 0));
uint8_t local_enable = !!dev->ld_regs[0][0x30];
fdc_remove(dev->fdc);
if (global_enable && local_enable) {
ld_port = make_port(dev, 0) & 0xFFF8;
if ((ld_port >= 0x0100) && (ld_port <= 0x0FF8))
fdc_set_base(dev->fdc, ld_port);
}
}
static void
fdc37c67x_lpt_handler(fdc37c67x_t *dev)
{
uint16_t ld_port = 0;
uint8_t global_enable = !!(dev->regs[0x22] & (1 << 3));
uint8_t local_enable = !!dev->ld_regs[3][0x30];
uint8_t lpt_irq = dev->ld_regs[3][0x70];
if (lpt_irq > 15)
lpt_irq = 0xff;
lpt1_remove();
if (global_enable && local_enable) {
ld_port = make_port(dev, 3) & 0xFFFC;
if ((ld_port >= 0x0100) && (ld_port <= 0x0FFC))
lpt1_init(ld_port);
}
lpt1_irq(lpt_irq);
}
static void
fdc37c67x_serial_handler(fdc37c67x_t *dev, int uart)
{
uint16_t ld_port = 0;
uint8_t uart_no = 4 + uart;
uint8_t global_enable = !!(dev->regs[0x22] & (1 << uart_no));
uint8_t local_enable = !!dev->ld_regs[uart_no][0x30];
serial_remove(dev->uart[uart]);
if (global_enable && local_enable) {
ld_port = make_port(dev, uart_no) & 0xFFF8;
if ((ld_port >= 0x0100) && (ld_port <= 0x0FF8))
serial_setup(dev->uart[uart], ld_port, dev->ld_regs[uart_no][0x70]);
}
}
static void
fdc37c67x_auxio_handler(fdc37c67x_t *dev)
{
uint16_t ld_port = 0;
uint8_t local_enable = !!dev->ld_regs[8][0x30];
io_removehandler(dev->auxio_base, 0x0001,
fdc37c67x_auxio_read, NULL, NULL, fdc37c67x_auxio_write, NULL, NULL, dev);
if (local_enable) {
dev->auxio_base = ld_port = make_port(dev, 8);
if ((ld_port >= 0x0100) && (ld_port <= 0x0FFF))
io_sethandler(dev->auxio_base, 0x0001,
fdc37c67x_auxio_read, NULL, NULL, fdc37c67x_auxio_write, NULL, NULL, dev);
}
}
static void
fdc37c67x_sio_handler(fdc37c67x_t *dev)
{
#if 0
if (dev->sio_base) {
io_removehandler(dev->sio_base, 0x0002,
fdc37c67x_read, NULL, NULL, fdc37c67x_write, NULL, NULL, dev);
}
dev->sio_base = (((uint16_t) dev->regs[0x27]) << 8) | dev->regs[0x26];
if (dev->sio_base) {
io_sethandler(dev->sio_base, 0x0002,
fdc37c67x_read, NULL, NULL, fdc37c67x_write, NULL, NULL, dev);
}
#endif
}
static void
fdc37c67x_gpio_handler(fdc37c67x_t *dev)
{
uint16_t ld_port = 0;
uint8_t local_enable;
local_enable = !!(dev->regs[0x03] & 0x80);
io_removehandler(dev->gpio_base, 0x0002,
fdc37c67x_gpio_read, NULL, NULL, fdc37c67x_gpio_write, NULL, NULL, dev);
if (local_enable) {
switch (dev->regs[0x03] & 0x03) {
case 0:
ld_port = 0xe0;
break;
case 1:
ld_port = 0xe2;
break;
case 2:
ld_port = 0xe4;
break;
case 3:
ld_port = 0xea; /* Default */
break;
}
dev->gpio_base = ld_port;
if (ld_port > 0x0000)
io_sethandler(dev->gpio_base, 0x0002,
fdc37c67x_gpio_read, NULL, NULL, fdc37c67x_gpio_write, NULL, NULL, dev);
}
}
static void
fdc37c67x_smi_handler(fdc37c67x_t *dev)
{
/* TODO: 8042 P1.2 SMI#. */
pic_reset_smi_irq_mask();
pic_set_smi_irq_mask(dev->ld_regs[3][0x70], dev->ld_regs[8][0xb4] & 0x02);
pic_set_smi_irq_mask(dev->ld_regs[5][0x70], dev->ld_regs[8][0xb4] & 0x04);
pic_set_smi_irq_mask(dev->ld_regs[4][0x70], dev->ld_regs[8][0xb4] & 0x08);
pic_set_smi_irq_mask(dev->ld_regs[0][0x70], dev->ld_regs[8][0xb4] & 0x10);
pic_set_smi_irq_mask(12, dev->ld_regs[8][0xb5] & 0x01);
pic_set_smi_irq_mask(1, dev->ld_regs[8][0xb5] & 0x02);
pic_set_smi_irq_mask(10, dev->ld_regs[8][0xb5] & 0x80);
}
static void
fdc37c67x_write(uint16_t port, uint8_t val, void *priv)
{
fdc37c67x_t *dev = (fdc37c67x_t *) priv;
uint8_t index = (port & 1) ? 0 : 1;
uint8_t valxor = 0x00, keep = 0x00;
if (index) {
if ((val == 0x55) && !dev->locked) {
if (dev->tries) {
dev->locked = 1;
fdc_3f1_enable(dev->fdc, 0);
dev->tries = 0;
} else
dev->tries++;
} else {
if (dev->locked) {
if (val == 0xaa) {
dev->locked = 0;
fdc_3f1_enable(dev->fdc, 1);
return;
}
dev->cur_reg = val;
} else {
if (dev->tries)
dev->tries = 0;
}
}
return;
} else {
if (dev->locked) {
if (dev->cur_reg < 48) {
valxor = val ^ dev->regs[dev->cur_reg];
if ((val == 0x20) || (val == 0x21))
return;
dev->regs[dev->cur_reg] = val;
} else {
valxor = val ^ dev->ld_regs[dev->regs[7]][dev->cur_reg];
if (((dev->cur_reg & 0xF0) == 0x70) && (dev->regs[7] < 4))
return;
/* Block writes to some logical devices. */
if (dev->regs[7] > 0x0a)
return;
else switch (dev->regs[7]) {
case 0x01:
case 0x02:
case 0x07:
return;
}
dev->ld_regs[dev->regs[7]][dev->cur_reg] = val | keep;
}
} else
return;
}
if (dev->cur_reg < 48) {
switch(dev->cur_reg) {
case 0x03:
if (valxor & 0x83)
fdc37c67x_gpio_handler(dev);
dev->regs[0x03] &= 0x83;
break;
case 0x22:
if (valxor & 0x01)
fdc37c67x_fdc_handler(dev);
if (valxor & 0x08)
fdc37c67x_lpt_handler(dev);
if (valxor & 0x10)
fdc37c67x_serial_handler(dev, 0);
if (valxor & 0x20)
fdc37c67x_serial_handler(dev, 1);
break;
case 0x26: case 0x27:
fdc37c67x_sio_handler(dev);
}
return;
}
switch(dev->regs[7]) {
case 0:
/* FDD */
switch(dev->cur_reg) {
case 0x30:
case 0x60:
case 0x61:
if ((dev->cur_reg == 0x30) && (val & 0x01))
dev->regs[0x22] |= 0x01;
if (valxor)
fdc37c67x_fdc_handler(dev);
break;
case 0xF0:
if (valxor & 0x01)
fdc_update_enh_mode(dev->fdc, val & 0x01);
if (valxor & 0x10)
fdc_set_swap(dev->fdc, (val & 0x10) >> 4);
break;
case 0xF1:
if (valxor & 0xC)
fdc_update_densel_force(dev->fdc, (val & 0xc) >> 2);
break;
case 0xF2:
if (valxor & 0xC0)
fdc_update_rwc(dev->fdc, 3, (val & 0xc0) >> 6);
if (valxor & 0x30)
fdc_update_rwc(dev->fdc, 2, (val & 0x30) >> 4);
if (valxor & 0x0C)
fdc_update_rwc(dev->fdc, 1, (val & 0x0c) >> 2);
if (valxor & 0x03)
fdc_update_rwc(dev->fdc, 0, (val & 0x03));
break;
case 0xF4:
if (valxor & 0x18)
fdc_update_drvrate(dev->fdc, 0, (val & 0x18) >> 3);
break;
case 0xF5:
if (valxor & 0x18)
fdc_update_drvrate(dev->fdc, 1, (val & 0x18) >> 3);
break;
case 0xF6:
if (valxor & 0x18)
fdc_update_drvrate(dev->fdc, 2, (val & 0x18) >> 3);
break;
case 0xF7:
if (valxor & 0x18)
fdc_update_drvrate(dev->fdc, 3, (val & 0x18) >> 3);
break;
}
break;
case 3:
/* Parallel port */
switch(dev->cur_reg) {
case 0x30:
case 0x60:
case 0x61:
case 0x70:
if ((dev->cur_reg == 0x30) && (val & 0x01))
dev->regs[0x22] |= 0x08;
if (valxor)
fdc37c67x_lpt_handler(dev);
if (dev->cur_reg == 0x70)
fdc37c67x_smi_handler(dev);
break;
}
break;
case 4:
/* Serial port 1 */
switch(dev->cur_reg) {
case 0x30:
case 0x60:
case 0x61:
case 0x70:
if ((dev->cur_reg == 0x30) && (val & 0x01))
dev->regs[0x22] |= 0x10;
if (valxor)
fdc37c67x_serial_handler(dev, 0);
if (dev->cur_reg == 0x70)
fdc37c67x_smi_handler(dev);
break;
}
break;
case 5:
/* Serial port 2 */
switch(dev->cur_reg) {
case 0x30:
case 0x60:
case 0x61:
case 0x70:
if ((dev->cur_reg == 0x30) && (val & 0x01))
dev->regs[0x22] |= 0x20;
if (valxor)
fdc37c67x_serial_handler(dev, 1);
if (dev->cur_reg == 0x70)
fdc37c67x_smi_handler(dev);
break;
}
break;
case 8:
/* Auxiliary I/O */
switch(dev->cur_reg) {
case 0x30:
case 0x60:
case 0x61:
case 0x70:
if (valxor)
fdc37c67x_auxio_handler(dev);
break;
case 0xb4:
case 0xb5:
fdc37c67x_smi_handler(dev);
break;
}
break;
}
}
static uint8_t
fdc37c67x_read(uint16_t port, void *priv)
{
fdc37c67x_t *dev = (fdc37c67x_t *) priv;
uint8_t index = (port & 1) ? 0 : 1;
uint8_t ret = 0xff;
uint16_t smi_stat = pic_get_smi_irq_status();
int f_irq = dev->ld_regs[0][0x70];
int p_irq = dev->ld_regs[3][0x70];
int s1_irq = dev->ld_regs[4][0x70];
int s2_irq = dev->ld_regs[5][0x70];
if (dev->locked) {
if (index)
ret = dev->cur_reg;
else {
if (dev->cur_reg < 0x30) {
if (dev->cur_reg == 0x20)
ret = dev->chip_id;
else
ret = dev->regs[dev->cur_reg];
} else {
if ((dev->regs[7] == 0) && (dev->cur_reg == 0xF2)) {
ret = (fdc_get_rwc(dev->fdc, 0) | (fdc_get_rwc(dev->fdc, 1) << 2) |
(fdc_get_rwc(dev->fdc, 2) << 4) | (fdc_get_rwc(dev->fdc, 3) << 6));
} else
ret = dev->ld_regs[dev->regs[7]][dev->cur_reg];
/* TODO: 8042 P1.2 SMI#. */
if ((dev->regs[7] == 8) && (dev->cur_reg == 0xb6)) {
ret = dev->regs[dev->cur_reg] & 0xe1;
ret |= ((!!(smi_stat & (1 << p_irq))) << 1);
ret |= ((!!(smi_stat & (1 << s2_irq))) << 2);
ret |= ((!!(smi_stat & (1 << s1_irq))) << 3);
ret |= ((!!(smi_stat & (1 << f_irq))) << 4);
} else if ((dev->regs[7] == 8) && (dev->cur_reg == 0xb7)) {
ret = dev->regs[dev->cur_reg] & 0xec;
ret |= ((!!(smi_stat & (1 << 12))) << 0);
ret |= ((!!(smi_stat & (1 << 1))) << 1);
ret |= ((!!(smi_stat & (1 << 10))) << 4);
}
}
}
}
return ret;
}
static void
fdc37c67x_reset(fdc37c67x_t *dev)
{
int i = 0;
memset(dev->regs, 0, 48);
dev->regs[0x03] = 0x03;
dev->regs[0x20] = dev->chip_id;
dev->regs[0x22] = 0x39;
dev->regs[0x24] = 0x04;
dev->regs[0x26] = 0xf0;
dev->regs[0x27] = 0x03;
for (i = 0; i < 11; i++)
memset(dev->ld_regs[i], 0, 256);
/* Logical device 0: FDD */
dev->ld_regs[0][0x30] = 1;
dev->ld_regs[0][0x60] = 3;
dev->ld_regs[0][0x61] = 0xf0;
dev->ld_regs[0][0x70] = 6;
dev->ld_regs[0][0x74] = 2;
dev->ld_regs[0][0xf0] = 0x0e;
dev->ld_regs[0][0xf2] = 0xff;
/* Logical device 3: Parallel Port */
dev->ld_regs[3][0x30] = 1;
dev->ld_regs[3][0x60] = 3;
dev->ld_regs[3][0x61] = 0x78;
dev->ld_regs[3][0x70] = 7;
dev->ld_regs[3][0x74] = 4;
dev->ld_regs[3][0xf0] = 0x3c;
/* Logical device 4: Serial Port 1 */
dev->ld_regs[4][0x30] = 1;
dev->ld_regs[4][0x60] = 3;
dev->ld_regs[4][0x61] = 0xf8;
dev->ld_regs[4][0x70] = 4;
dev->ld_regs[4][0xf0] = 3;
serial_setup(dev->uart[0], 0x3f8, dev->ld_regs[4][0x70]);
/* Logical device 5: Serial Port 2 */
dev->ld_regs[5][0x30] = 1;
dev->ld_regs[5][0x60] = 2;
dev->ld_regs[5][0x61] = 0xf8;
dev->ld_regs[5][0x70] = 3;
dev->ld_regs[5][0x74] = 4;
dev->ld_regs[5][0xf1] = 2;
dev->ld_regs[5][0xf2] = 3;
serial_setup(dev->uart[1], 0x2f8, dev->ld_regs[5][0x70]);
/* Logical device 7: Keyboard */
dev->ld_regs[7][0x30] = 1;
dev->ld_regs[7][0x61] = 0x60;
dev->ld_regs[7][0x70] = 1;
dev->ld_regs[7][0x72] = 12;
/* Logical device 8: Auxiliary I/O */
dev->ld_regs[8][0xc0] = 6;
dev->ld_regs[8][0xc1] = 3;
fdc37c67x_gpio_handler(dev);
fdc37c67x_lpt_handler(dev);
fdc37c67x_serial_handler(dev, 0);
fdc37c67x_serial_handler(dev, 1);
fdc37c67x_auxio_handler(dev);
fdc37c67x_sio_handler(dev);
fdc_reset(dev->fdc);
fdc37c67x_fdc_handler(dev);
dev->locked = 0;
}
static void
fdc37c67x_close(void *priv)
{
fdc37c67x_t *dev = (fdc37c67x_t *) priv;
free(dev);
}
static void *
fdc37c67x_init(const device_t *info)
{
fdc37c67x_t *dev = (fdc37c67x_t *) malloc(sizeof(fdc37c67x_t));
memset(dev, 0, sizeof(fdc37c67x_t));
dev->fdc = device_add(&fdc_at_smc_device);
dev->uart[0] = device_add_inst(&ns16550_device, 1);
dev->uart[1] = device_add_inst(&ns16550_device, 2);
dev->chip_id = info->local & 0xff;
dev->gpio_regs[0] = 0xff;
// dev->gpio_regs[1] = (info->local == 0x0030) ? 0xff : 0xfd;
dev->gpio_regs[1] = (dev->chip_id == 0x30) ? 0xff : 0xfd;
fdc37c67x_reset(dev);
io_sethandler(0x370, 0x0002,
fdc37c67x_read, NULL, NULL, fdc37c67x_write, NULL, NULL, dev);
io_sethandler(0x3f0, 0x0002,
fdc37c67x_read, NULL, NULL, fdc37c67x_write, NULL, NULL, dev);
return dev;
}
const device_t fdc37c67x_device = {
"SMC FDC37C67X Super I/O",
0,
0x40,
fdc37c67x_init, fdc37c67x_close, NULL,
{ NULL }, NULL, NULL,
NULL
};

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@@ -366,6 +366,16 @@ const device_t pc87332_398_ide_device = {
};
const device_t pc87332_398_ide_sec_device = {
"National Semiconductor PC87332 Super I/O (Port 398h) (With Secondary IDE)",
0,
0x201,
pc87332_init, pc87332_close, NULL,
{ NULL }, NULL, NULL,
NULL
};
const device_t pc87332_398_ide_fdcon_device = {
"National Semiconductor PC87332 Super I/O (Port 398h) (With IDE and FDC on)",
0,