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pcem/src/ide.c

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#define IDE_TIME (10 * TIMER_USEC)
#define _LARGEFILE_SOURCE
#define _LARGEFILE64_SOURCE
#define _GNU_SOURCE
#include <errno.h>
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <sys/types.h>
#include "ibm.h"
#include "hdd.h"
#include "io.h"
#include "pic.h"
#include "timer.h"
#include "hdd_file.h"
#include "scsi.h"
#include "scsi_cd.h"
#include "scsi_zip.h"
#include "ide.h"
/* ATA Commands */
#define WIN_SRST 0x08 /* ATAPI Device Reset */
#define WIN_RECAL 0x10
#define WIN_RESTORE WIN_RECAL
#define WIN_READ 0x20 /* 28-Bit Read */
#define WIN_READ_NORETRY 0x21 /* 28-Bit Read - no retry*/
#define WIN_WRITE 0x30 /* 28-Bit Write */
#define WIN_WRITE_NORETRY 0x31 /* 28-Bit Write */
#define WIN_VERIFY 0x40 /* 28-Bit Verify */
#define WIN_VERIFY_ONCE 0x41 /* Deprecated command - same as 0x40 */
#define WIN_FORMAT 0x50
#define WIN_SEEK 0x70
#define WIN_DRIVE_DIAGNOSTICS 0x90 /* Execute Drive Diagnostics */
#define WIN_SPECIFY 0x91 /* Initialize Drive Parameters */
#define WIN_PACKETCMD 0xA0 /* Send a packet command. */
#define WIN_PIDENTIFY 0xA1 /* Identify ATAPI device */
#define WIN_READ_MULTIPLE 0xC4
#define WIN_WRITE_MULTIPLE 0xC5
#define WIN_SET_MULTIPLE_MODE 0xC6
#define WIN_READ_DMA 0xC8
#define WIN_WRITE_DMA 0xCA
#define WIN_SETIDLE1 0xE3
#define WIN_CHECK_POWER_MODE 0xE5
#define WIN_IDENTIFY 0xEC /* Ask drive to identify itself */
#define WIN_SET_FEATURES 0xEF
/** Evaluate to non-zero if the currently selected drive is an ATAPI device */
#define IDE_DRIVE_IS_CDROM(ide) (ide->type == IDE_CDROM)
enum
{
IDE_NONE = 0,
IDE_HDD,
IDE_CDROM
};
struct IDE;
typedef struct IDE
{
int type;
int board;
uint8_t atastat;
uint8_t error;
int secount,sector,cylinder,head,drive,cylprecomp;
uint8_t command;
uint8_t fdisk;
int pos;
int reset;
uint16_t buffer[65536];
int irqstat;
int service;
int lba;
uint32_t lba_addr;
int skip512;
int blocksize, blockcount;
uint8_t sector_buffer[256*512];
int do_initial_read;
int sector_pos;
hdd_file_t hdd_file;
atapi_device_t atapi;
} IDE;
int cdrom_channel = 2;
int zip_channel = -1;
IDE ide_drives[7];
IDE *ext_ide;
char ide_fn[7][512];
int (*ide_bus_master_read_data)(int channel, uint8_t *data, int size, void *p);
int (*ide_bus_master_write_data)(int channel, uint8_t *data, int size, void *p);
void (*ide_bus_master_set_irq)(int channel, void *p);
void *ide_bus_master_p;
pc_timer_t ide_timer[2];
int cur_ide[2];
uint8_t getstat(IDE *ide) { return ide->atastat; }
void ide_irq_raise(IDE *ide)
{
// pclog("IDE_IRQ_RAISE\n");
if (!(ide->fdisk&2)) {
// if (ide->board && !ide->irqstat) pclog("IDE_IRQ_RAISE\n");
picint((ide->board)?(1<<15):(1<<14));
if (ide_bus_master_set_irq)
ide_bus_master_set_irq(ide->board, ide_bus_master_p);
}
ide->irqstat=1;
ide->service=1;
}
static inline void ide_irq_lower(IDE *ide)
{
// pclog("IDE_IRQ_LOWER\n");
// if (ide.board == 0) {
picintc((ide->board)?(1<<15):(1<<14));
// }
ide->irqstat=0;
}
void ide_irq_update(IDE *ide)
{
if (ide->irqstat && !((pic2.pend|pic2.ins)&0x40) && !(ide->fdisk & 2))
picint((ide->board)?(1<<15):(1<<14));
else if ((pic2.pend|pic2.ins)&0x40)
picintc((ide->board)?(1<<15):(1<<14));
}
/**
* Copy a string into a buffer, padding with spaces, and placing characters as
* if they were packed into 16-bit values, stored little-endian.
*
* @param str Destination buffer
* @param src Source string
* @param len Length of destination buffer to fill in. Strings shorter than
* this length will be padded with spaces.
*/
void ide_padstr(char *str, const char *src, int len)
{
int i, v;
for (i = 0; i < len; i++) {
if (*src != '\0') {
v = *src++;
} else {
v = ' ';
}
str[i ^ 1] = v;
}
}
/**
* Fill in ide->buffer with the output of the "IDENTIFY DEVICE" command
*/
static void ide_identify(IDE *ide)
{
memset(ide->buffer, 0, 512);
//ide->buffer[1] = 101; /* Cylinders */
if ((hdc[cur_ide[ide->board]].tracks * hdc[cur_ide[ide->board]].hpc * hdc[cur_ide[ide->board]].spt) >= 16514064)
ide->buffer[1] = 16383;
else
ide->buffer[1] = hdc[cur_ide[ide->board]].tracks; /* Cylinders */
ide->buffer[3] = hdc[cur_ide[ide->board]].hpc; /* Heads */
ide->buffer[6] = hdc[cur_ide[ide->board]].spt; /* Sectors */
ide_padstr((char *) (ide->buffer + 10), "", 20); /* Serial Number */
ide_padstr((char *) (ide->buffer + 23), "v1.0", 8); /* Firmware */
ide_padstr((char *) (ide->buffer + 27), "PCemHD", 40); /* Model */
ide->buffer[20] = 3; /*Buffer type*/
ide->buffer[21] = 512; /*Buffer size*/
ide->buffer[47] = 16; /*Max sectors on multiple transfer command*/
ide->buffer[48] = 1; /*Dword transfers supported*/
ide->buffer[49] = (1 << 9) | (1 << 8); /* LBA and DMA supported */
ide->buffer[50] = 0x4000; /* Capabilities */
ide->buffer[51] = 2 << 8; /*PIO timing mode*/
ide->buffer[52] = 2 << 8; /*DMA timing mode*/
ide->buffer[59] = ide->blocksize ? (ide->blocksize | 0x100) : 0;
ide->buffer[60] = (hdc[cur_ide[ide->board]].tracks * hdc[cur_ide[ide->board]].hpc * hdc[cur_ide[ide->board]].spt) & 0xFFFF; /* Total addressable sectors (LBA) */
ide->buffer[61] = (hdc[cur_ide[ide->board]].tracks * hdc[cur_ide[ide->board]].hpc * hdc[cur_ide[ide->board]].spt) >> 16;
ide->buffer[63] = 7; /*Multiword DMA*/
ide->buffer[80] = 0xe; /*ATA-1 to ATA-3 supported*/
}
/*
* Return the sector offset for the current register values
*/
static off64_t ide_get_sector(IDE *ide)
{
if (ide->lba)
{
return (off64_t)ide->lba_addr + ide->skip512;
}
else
{
int heads = ide->hdd_file.hpc;
int sectors = ide->hdd_file.spt;
return ((((off64_t) ide->cylinder * heads) + ide->head) *
sectors) + (ide->sector - 1) + ide->skip512;
}
}
/**
* Move to the next sector using CHS addressing
*/
static void ide_next_sector(IDE *ide)
{
if (ide->lba)
{
ide->lba_addr++;
}
else
{
ide->sector++;
if (ide->sector == (ide->hdd_file.spt + 1)) {
ide->sector = 1;
ide->head++;
if (ide->head == ide->hdd_file.hpc) {
ide->head = 0;
ide->cylinder++;
}
}
}
}
static void loadhd(IDE *ide, int d, const char *fn)
{
hdd_load(&ide->hdd_file, d, fn);
if (ide->hdd_file.f)
ide->type = IDE_HDD;
else
ide->type = IDE_NONE;
}
void ide_set_signature(IDE *ide)
{
ide->secount=1;
ide->sector=1;
ide->head=0;
ide->cylinder=(IDE_DRIVE_IS_CDROM(ide) ? 0xEB14 : ((ide->type == IDE_HDD) ? 0 : 0xFFFF));
// if (ide->type == IDE_HDD) ide->drive = 0;
}
void resetide(void)
{
int d;
/* Close hard disk image files (if previously open) */
for (d = 0; d < 4; d++) {
ide_drives[d].type = IDE_NONE;
hdd_close(&ide_drives[d].hdd_file);
ide_drives[d].atastat = READY_STAT | DSC_STAT;
ide_drives[d].service = 0;
ide_drives[d].board = (d & 2) ? 1 : 0;
}
if (hdd_controller_current_is_ide())
{
for (d = 0; d < 4; d++)
{
ide_drives[d].drive = d;
if (cdrom_channel == d)
{
ide_drives[d].type = IDE_CDROM;
scsi_bus_atapi_init(&ide_drives[d].atapi.bus, &scsi_cd, d, &ide_drives[d].atapi);
}
else if (zip_channel == d)
{
ide_drives[d].type = IDE_CDROM;
scsi_bus_atapi_init(&ide_drives[d].atapi.bus, &scsi_zip, d, &ide_drives[d].atapi);
}
else
{
loadhd(&ide_drives[d], d, ide_fn[d]);
}
ide_set_signature(&ide_drives[d]);
ide_drives[d].atapi.ide = &ide_drives[d];
ide_drives[d].atapi.board = (d & 2) ? 1 : 0;
ide_drives[d].atapi.atastat = &ide_drives[d].atastat;
ide_drives[d].atapi.error = &ide_drives[d].error;
ide_drives[d].atapi.cylinder = &ide_drives[d].cylinder;
}
}
cur_ide[0] = 0;
cur_ide[1] = 2;
}
int idetimes=0;
void writeidew(int ide_board, uint16_t val)
{
IDE *ide = &ide_drives[cur_ide[ide_board]];
if (ide->command == WIN_PACKETCMD)
{
atapi_data_write(&ide->atapi, val);
}
else
{
ide->buffer[ide->pos >> 1] = val;
ide->pos += 2;
if (ide->pos>=512)
{
ide->pos=0;
ide->atastat = BUSY_STAT;
if (ide->command == WIN_WRITE_MULTIPLE)
callbackide(ide_board);
else
timer_set_delay_u64(&ide_timer[ide_board], 6 * IDE_TIME);
}
}
}
void writeidel(int ide_board, uint32_t val)
{
// pclog("WriteIDEl %08X\n", val);
writeidew(ide_board, val);
writeidew(ide_board, val >> 16);
}
void writeide(int ide_board, uint16_t addr, uint8_t val)
{
IDE *ide = &ide_drives[cur_ide[ide_board]];
IDE *ide_other = &ide_drives[cur_ide[ide_board] ^ 1];
/* if (ide_board && (cr0&1) && !(eflags&VM_FLAG))
{
// pclog("Failed write IDE %04X:%08X\n",CS,pc);
return;
}*/
// if ((cr0&1) && !(eflags&VM_FLAG))
// if (ide_board)
// pclog("WriteIDE %04X %02X from %04X(%08X):%08X %i\n", addr, val, CS, cs, cpu_state.pc, ins);
// return;
addr|=0x80;
// if (ide_board) pclog("Write IDEb %04X %02X %04X(%08X):%04X %i %02X %02X\n",addr,val,CS,cs,pc,ins,ide->atastat,ide_drives[0].atastat);
/*if (idedebug) */
// pclog("Write IDE %08X %02X %04X:%08X\n",addr,val,CS,pc);
// int c;
// rpclog("Write IDE %08X %02X %08X %08X\n",addr,val,PC,armregs[12]);
if (ide->type == IDE_NONE && (addr == 0x1f0 || addr == 0x1f7)) return;
switch (addr)
{
case 0x1F0: /* Data */
writeidew(ide_board, val | (val << 8));
return;
case 0x1F1: /* Features */
ide->cylprecomp = val;
ide_other->cylprecomp = val;
return;
case 0x1F2: /* Sector count */
ide->secount = val;
ide_other->secount = val;
return;
case 0x1F3: /* Sector */
ide->sector = val;
ide->lba_addr = (ide->lba_addr & 0xFFFFF00) | val;
ide_other->sector = val;
ide_other->lba_addr = (ide_other->lba_addr & 0xFFFFF00) | val;
return;
case 0x1F4: /* Cylinder low */
ide->cylinder = (ide->cylinder & 0xFF00) | val;
ide->lba_addr = (ide->lba_addr & 0xFFF00FF) | (val << 8);
ide_other->cylinder = (ide_other->cylinder&0xFF00) | val;
ide_other->lba_addr = (ide_other->lba_addr&0xFFF00FF) | (val << 8);
// pclog("Write cylinder low %02X\n",val);
return;
case 0x1F5: /* Cylinder high */
ide->cylinder = (ide->cylinder & 0xFF) | (val << 8);
ide->lba_addr = (ide->lba_addr & 0xF00FFFF) | (val << 16);
ide_other->cylinder = (ide_other->cylinder & 0xFF) | (val << 8);
ide_other->lba_addr = (ide_other->lba_addr & 0xF00FFFF) | (val << 16);
return;
case 0x1F6: /* Drive/Head */
/* if (val==0xB0)
{
dumpregs();
exit(-1);
}*/
if (cur_ide[ide_board] != ((val>>4)&1)+(ide_board<<1))
{
cur_ide[ide_board]=((val>>4)&1)+(ide_board<<1);
if (ide->reset || ide_other->reset)
{
ide->atastat = ide_other->atastat = READY_STAT | DSC_STAT;
ide->error = ide_other->error = 1;
ide->secount = ide_other->secount = 1;
ide->sector = ide_other->sector = 1;
ide->head = ide_other->head = 0;
ide->cylinder = ide_other->cylinder = 0;
ide->reset = ide_other->reset = 0;
// ide->blocksize = ide_other->blocksize = 0;
if (IDE_DRIVE_IS_CDROM(ide))
ide->cylinder=0xEB14;
if (IDE_DRIVE_IS_CDROM(ide_other))
ide_other->cylinder=0xEB14;
timer_disable(&ide_timer[ide_board]);
return;
}
ide = &ide_drives[cur_ide[ide_board]];
}
ide->head = val & 0xF;
ide->lba = val & 0x40;
ide_other->head = val & 0xF;
ide_other->lba = val & 0x40;
ide->lba_addr = (ide->lba_addr & 0x0FFFFFF) | ((val & 0xF) << 24);
ide_other->lba_addr = (ide_other->lba_addr & 0x0FFFFFF)|((val & 0xF) << 24);
ide_irq_update(ide);
return;
case 0x1F7: /* Command register */
if (ide->type == IDE_NONE) return;
// pclog("IDE command %02X drive %i\n",val,ide.drive);
ide_irq_lower(ide);
ide->command=val;
// pclog("New IDE command - %02X %i %i\n",ide->command,cur_ide[ide_board],ide_board);
ide->error=0;
switch (val)
{
case WIN_SRST: /* ATAPI Device Reset */
if (IDE_DRIVE_IS_CDROM(ide)) ide->atastat = BUSY_STAT;
else ide->atastat = READY_STAT;
timer_set_delay_u64(&ide_timer[ide_board], 100*IDE_TIME);
return;
case WIN_RESTORE:
case WIN_SEEK:
// pclog("WIN_RESTORE start\n");
ide->atastat = READY_STAT;
timer_set_delay_u64(&ide_timer[ide_board], 100*IDE_TIME);
return;
case WIN_READ_MULTIPLE:
if (!ide->blocksize && (ide->type != IDE_CDROM))
fatal("READ_MULTIPLE - blocksize = 0\n");
#if 0
if (ide->lba) pclog("Read Multiple %i sectors from LBA addr %07X\n",ide->secount,ide->lba_addr);
else pclog("Read Multiple %i sectors from sector %i cylinder %i head %i %i\n",ide->secount,ide->sector,ide->cylinder,ide->head,ins);
#endif
ide->blockcount = 0;
case WIN_READ:
case WIN_READ_NORETRY:
case WIN_READ_DMA:
/* if (ide.secount>1)
{
fatal("Read %i sectors from sector %i cylinder %i head %i\n",ide.secount,ide.sector,ide.cylinder,ide.head);
}*/
#if 0
if (ide->lba) pclog("Read %i sectors from LBA addr %07X\n",ide->secount,ide->lba_addr);
else pclog("Read %i sectors from sector %i cylinder %i head %i %i\n",ide->secount,ide->sector,ide->cylinder,ide->head,ins);
#endif
ide->atastat = BUSY_STAT;
timer_set_delay_u64(&ide_timer[ide_board], 200*IDE_TIME);
ide->do_initial_read = 1;
return;
case WIN_WRITE_MULTIPLE:
if (!ide->blocksize && (ide->type != IDE_CDROM))
fatal("Write_MULTIPLE - blocksize = 0\n");
#if 0
if (ide->lba) pclog("Write Multiple %i sectors from LBA addr %07X\n",ide->secount,ide->lba_addr);
else pclog("Write Multiple %i sectors to sector %i cylinder %i head %i\n",ide->secount,ide->sector,ide->cylinder,ide->head);
#endif
ide->blockcount = 0;
case WIN_WRITE:
case WIN_WRITE_NORETRY:
/* if (ide.secount>1)
{
fatal("Write %i sectors to sector %i cylinder %i head %i\n",ide.secount,ide.sector,ide.cylinder,ide.head);
}*/
#if 0
if (ide->lba) pclog("Write %i sectors from LBA addr %07X\n",ide->secount,ide->lba_addr);
else pclog("Write %i sectors to sector %i cylinder %i head %i\n",ide->secount,ide->sector,ide->cylinder,ide->head);
#endif
ide->atastat = DRQ_STAT | DSC_STAT | READY_STAT;
ide->pos=0;
return;
case WIN_WRITE_DMA:
#if 0
if (ide->lba) pclog("Write %i sectors from LBA addr %07X\n",ide->secount,ide->lba_addr);
else pclog("Write %i sectors to sector %i cylinder %i head %i\n",ide->secount,ide->sector,ide->cylinder,ide->head);
#endif
ide->atastat = BUSY_STAT;
timer_set_delay_u64(&ide_timer[ide_board], 200*IDE_TIME);
return;
case WIN_VERIFY:
case WIN_VERIFY_ONCE:
#if 0
if (ide->lba) pclog("Read verify %i sectors from LBA addr %07X\n",ide->secount,ide->lba_addr);
else pclog("Read verify %i sectors from sector %i cylinder %i head %i\n",ide->secount,ide->sector,ide->cylinder,ide->head);
#endif
ide->atastat = BUSY_STAT;
timer_set_delay_u64(&ide_timer[ide_board], 200*IDE_TIME);
return;
case WIN_FORMAT:
// pclog("Format track %i head %i\n",ide.cylinder,ide.head);
ide->atastat = DRQ_STAT;
// idecallback[ide_board]=200;
ide->pos=0;
return;
case WIN_SPECIFY: /* Initialize Drive Parameters */
ide->atastat = BUSY_STAT;
timer_set_delay_u64(&ide_timer[ide_board], 30*IDE_TIME);
// pclog("SPECIFY\n");
// output=1;
return;
case WIN_DRIVE_DIAGNOSTICS: /* Execute Drive Diagnostics */
ide->atastat = BUSY_STAT;
timer_set_delay_u64(&ide_timer[ide_board], 200*IDE_TIME);
return;
case WIN_PIDENTIFY: /* Identify Packet Device */
case WIN_SET_MULTIPLE_MODE: /*Set Multiple Mode*/
// output=1;
case WIN_SETIDLE1: /* Idle */
case WIN_CHECK_POWER_MODE:
ide->atastat = BUSY_STAT;
callbackide(ide_board);
// idecallback[ide_board]=200*IDE_TIME;
return;
case WIN_IDENTIFY: /* Identify Device */
case WIN_SET_FEATURES:
// output=3;
// timetolive=500;
ide->atastat = BUSY_STAT;
timer_set_delay_u64(&ide_timer[ide_board], 200*IDE_TIME);
return;
case WIN_PACKETCMD: /* ATAPI Packet */
if (ide->type == IDE_CDROM)
atapi_command_start(&ide->atapi, ide->cylprecomp);
ide->atastat = BUSY_STAT;
timer_set_delay_u64(&ide_timer[ide_board], IDE_TIME);
ide->atapi.bus_state = 0;
return;
case 0xF0:
default:
ide->atastat = READY_STAT | ERR_STAT | DSC_STAT;
ide->error = ABRT_ERR;
ide_irq_raise(ide);
/* fatal("Bad IDE command %02X\n", val);*/
return;
}
return;
case 0x3F6: /* Device control */
if ((ide->fdisk&4) && !(val&4) && (ide->type != IDE_NONE || ide_other->type != IDE_NONE))
{
timer_set_delay_u64(&ide_timer[ide_board], 500*IDE_TIME);
ide->reset = ide_other->reset = 1;
ide->atastat = ide_other->atastat = BUSY_STAT;
// pclog("IDE Reset %i\n", ide_board);
}
if (val & 4)
{
/*Drive held in reset*/
timer_disable(&ide_timer[ide_board]);
ide->atastat = ide_other->atastat = BUSY_STAT;
}
ide->fdisk = ide_other->fdisk = val;
ide_irq_update(ide);
return;
}
// fatal("Bad IDE write %04X %02X\n", addr, val);
}
uint8_t readide(int ide_board, uint16_t addr)
{
IDE *ide = &ide_drives[cur_ide[ide_board]];
uint8_t temp = 0xff;
uint16_t tempw;
addr|=0x80;
/* if (ide_board && (cr0&1) && !(eflags&VM_FLAG))
{
// pclog("Failed read IDE %04X:%08X\n",CS,pc);
return 0xFF;
}*/
// if ((cr0&1) && !(eflags&VM_FLAG))
// pclog("ReadIDE %04X from %04X(%08X):%08X\n", addr, CS, cs, pc);
// return 0xFF;
if (ide->type == IDE_NONE && (addr == 0x1f0 || addr == 0x1f7)) return 0;
// /*if (addr!=0x1F7 && addr!=0x3F6) */pclog("Read IDEb %04X %02X %02X %i %04X:%04X %i %04X\n",addr,ide->atastat,(ide->atastat & ~DSC_STAT) | (ide->service ? SERVICE_STAT : 0),cur_ide[ide_board],CS,pc,ide_board, BX);
//rpclog("Read IDE %08X %08X %02X\n",addr,PC,iomd.irqb.mask);
switch (addr)
{
case 0x1F0: /* Data */
tempw = readidew(ide_board);
// pclog("Read IDEW %04X\n", tempw);
temp = tempw & 0xff;
break;
case 0x1F1: /* Error */
// pclog("Read error %02X\n",ide.error);
temp = ide->error;
break;
case 0x1F2: /* Sector count */
// pclog("Read sector count %02X\n",ide->secount);
if (ide->type == IDE_CDROM && ide->command == WIN_PACKETCMD)
temp = atapi_read_iir(&ide->atapi);
else
temp = (uint8_t)ide->secount;
break;
case 0x1F3: /* Sector */
temp = (uint8_t)ide->sector;
break;
case 0x1F4: /* Cylinder low */
// pclog("Read cyl low %02X\n",ide.cylinder&0xFF);
temp = (uint8_t)(ide->cylinder&0xFF);
break;
case 0x1F5: /* Cylinder high */
// pclog("Read cyl low %02X\n",ide.cylinder>>8);
temp = (uint8_t)(ide->cylinder>>8);
break;
case 0x1F6: /* Drive/Head */
temp = (uint8_t)(ide->head | ((cur_ide[ide_board] & 1) ? 0x10 : 0) | (ide->lba ? 0x40 : 0) | 0xa0);
break;
case 0x1F7: /* Status */
if (ide->type == IDE_NONE)
{
// pclog("Return status 00\n");
temp = 0;
break;
}
ide_irq_lower(ide);
if (ide->type == IDE_CDROM)
{
// pclog("Read CDROM status %02X\n",(ide->atastat & ~DSC_STAT) | (ide->service ? SERVICE_STAT : 0));
temp = (ide->atastat & ~DSC_STAT) | (ide->service ? SERVICE_STAT : 0);
if (ide->command == WIN_PACKETCMD)
{
if (atapi_read_drq(&ide->atapi))
temp |= DRQ_STAT;
else
temp &= ~DRQ_STAT;
}
}
else
{
// && ide->service) return ide.atastat[ide.board]|SERVICE_STAT;
// pclog("Return status %02X %04X:%04X %02X %02X\n",ide->atastat, CS ,pc, AH, BH);
temp = ide->atastat;
}
break;
case 0x3F6: /* Alternate Status */
// pclog("3F6 read %02X\n",ide.atastat[ide.board]);
// if (output) output=0;
if (ide->type == IDE_NONE)
{
// pclog("Return status 00\n");
temp = 0;
break;
}
if (ide->type == IDE_CDROM)
{
// pclog("Read CDROM status %02X\n",(ide->atastat & ~DSC_STAT) | (ide->service ? SERVICE_STAT : 0));
temp = (ide->atastat & ~DSC_STAT) | (ide->service ? SERVICE_STAT : 0);
if (ide->command == WIN_PACKETCMD)
{
if (atapi_read_drq(&ide->atapi))
temp |= DRQ_STAT;
else
temp &= ~DRQ_STAT;
}
}
else
{
// && ide->service) return ide.atastat[ide.board]|SERVICE_STAT;
// pclog("Return status %02X\n",ide->atastat);
temp = ide->atastat;
}
break;
}
// if (ide_board) pclog("Read IDEb %04X %02X %02X %02X %i %04X:%04X %i\n", addr, temp, ide->atastat,(ide->atastat & ~DSC_STAT) | (ide->service ? SERVICE_STAT : 0),cur_ide[ide_board],CS,cpu_state.pc,ide_board);
return temp;
// fatal("Bad IDE read %04X\n", addr);
}
uint16_t readidew(int ide_board)
{
IDE *ide = &ide_drives[cur_ide[ide_board]];
uint16_t temp;
/* if (ide_board && (cr0&1) && !(eflags&VM_FLAG))
{
// pclog("Failed read IDEw %04X:%08X\n",CS,pc);
return 0xFFFF;
}*/
// return 0xFFFF;
// pclog("Read IDEw %04X %04X:%04X %02X %i %i\n",ide->buffer[ide->pos >> 1],CS,pc,opcode,ins, ide->pos);
if (ide->command == WIN_PACKETCMD)
{
temp = atapi_data_read(&ide->atapi);
}
else
{
temp = ide->buffer[ide->pos >> 1];
ide->pos += 2;
if (ide->pos >= 512 && ide->command)
{
// pclog("Over! packlen %i %i\n",ide->packlen,ide->pos);
ide->pos = 0;
ide->atastat = READY_STAT | DSC_STAT;
if (ide->command == WIN_READ || ide->command == WIN_READ_NORETRY || ide->command == WIN_READ_MULTIPLE)
{
ide->secount = (ide->secount - 1) & 0xff;
if (ide->secount)
{
ide_next_sector(ide);
ide->atastat = BUSY_STAT;
if (ide->command == WIN_READ_MULTIPLE)
callbackide(ide_board);
else
timer_set_delay_u64(&ide_timer[ide_board], 6 * IDE_TIME);
// pclog("set idecallback\n");
// callbackide(ide_board);
}
// else
// pclog("readidew done %02X\n", ide->atastat);
}
}
}
// pclog("Read IDEw %04X\n",temp);
return temp;
}
uint32_t readidel(int ide_board)
{
uint16_t temp;
// pclog("Read IDEl %i\n", ide_board);
temp = readidew(ide_board);
return temp | (readidew(ide_board) << 16);
}
int times30=0;
void callbackide(int ide_board)
{
IDE *ide = &ide_drives[cur_ide[ide_board]];
IDE *ide_other = &ide_drives[cur_ide[ide_board] ^ 1];
atapi_device_t *atapi_dev = &ide->atapi;
ext_ide = ide;
// return;
if (ide->command==0x30) times30++;
// if (times30==2240) output=1;
//if (times30==2471 && ide->command==0xA0) output=1;
///*if (ide_board) */pclog("CALLBACK %02X %i %i %i\n",ide->command,times30,ide->reset,cur_ide[ide_board]);
// if (times30==1294)
// output=1;
if (ide->reset)
{
ide->atastat = ide_other->atastat = READY_STAT | DSC_STAT;
ide->error = ide_other->error = 1;
ide->secount = ide_other->secount = 1;
ide->sector = ide_other->sector = 1;
ide->head = ide_other->head = 0;
ide->cylinder = ide_other->cylinder = 0;
ide->reset = ide_other->reset = 0;
if (IDE_DRIVE_IS_CDROM(ide))
{
ide->cylinder=0xEB14;
atapi->stop();
atapi_reset(&ide->atapi);
}
if (ide->type == IDE_NONE)
{
ide->cylinder=0xFFFF;
atapi->stop();
}
if (IDE_DRIVE_IS_CDROM(ide_other))
{
ide_other->cylinder=0xEB14;
atapi->stop();
atapi_reset(&ide_other->atapi);
}
if (ide_other->type == IDE_NONE)
{
ide_other->cylinder=0xFFFF;
atapi->stop();
}
// pclog("Reset callback\n");
return;
}
switch (ide->command)
{
//Initialize the Task File Registers as follows: Status = 00h, Error = 01h, Sector Count = 01h, Sector Number = 01h, Cylinder Low = 14h, Cylinder High =EBh and Drive/Head = 00h.
case WIN_SRST: /*ATAPI Device Reset */
ide->atastat = READY_STAT | DSC_STAT;
ide->error=1; /*Device passed*/
ide->secount = ide->sector = 1;
ide_set_signature(ide);
if (IDE_DRIVE_IS_CDROM(ide))
ide->atastat = 0;
ide_irq_raise(ide);
if (IDE_DRIVE_IS_CDROM(ide))
ide->service = 0;
return;
case WIN_RESTORE:
case WIN_SEEK:
if (IDE_DRIVE_IS_CDROM(ide)) {
pclog("WIN_RESTORE callback on CD-ROM\n");
goto abort_cmd;
}
// pclog("WIN_RESTORE callback\n");
ide->atastat = READY_STAT | DSC_STAT;
ide_irq_raise(ide);
return;
case WIN_READ:
case WIN_READ_NORETRY:
if (IDE_DRIVE_IS_CDROM(ide)) {
ide_set_signature(ide);
goto abort_cmd;
}
if (ide->do_initial_read)
{
ide->do_initial_read = 0;
ide->sector_pos = 0;
hdd_read_sectors(&ide->hdd_file, ide_get_sector(ide), ide->secount ? ide->secount : 256, ide->sector_buffer);
}
memcpy(ide->buffer, &ide->sector_buffer[ide->sector_pos*512], 512);
ide->sector_pos++;
// pclog("Read %i %i %i %08X\n",ide.cylinder,ide.head,ide.sector,addr);
/* if (ide.cylinder || ide.head)
{
fatal("Read from other cylinder/head");
}*/
ide->pos=0;
ide->atastat = DRQ_STAT | READY_STAT | DSC_STAT;
// pclog("Read sector callback %i %i %i offset %08X %i left %i %02X\n",ide.sector,ide.cylinder,ide.head,addr,ide.secount,ide.spt,ide.atastat[ide.board]);
// if (addr) output=3;
ide_irq_raise(ide);
readflash_set(READFLASH_HDC, ide->drive);
return;
case WIN_READ_DMA:
if (IDE_DRIVE_IS_CDROM(ide)) {
goto abort_cmd;
}
if (ide->do_initial_read)
{
ide->do_initial_read = 0;
ide->sector_pos = 0;
hdd_read_sectors(&ide->hdd_file, ide_get_sector(ide), ide->secount ? ide->secount : 256, ide->sector_buffer);
}
ide->pos=0;
if (ide_bus_master_read_data)
{
if (ide_bus_master_read_data(ide_board, &ide->sector_buffer[ide->sector_pos*512], 512, ide_bus_master_p))
timer_set_delay_u64(&ide_timer[ide_board], 6*IDE_TIME); /*DMA not performed, try again later*/
else
{
/*DMA successful*/
ide->sector_pos++;
ide->atastat = DRQ_STAT | READY_STAT | DSC_STAT;
ide->secount = (ide->secount - 1) & 0xff;
if (ide->secount)
{
ide_next_sector(ide);
ide->atastat = BUSY_STAT;
timer_set_delay_u64(&ide_timer[ide_board], 6*IDE_TIME);
}
else
{
ide_irq_raise(ide);
}
}
}
readflash_set(READFLASH_HDC, ide->drive);
return;
case WIN_READ_MULTIPLE:
if (IDE_DRIVE_IS_CDROM(ide)) {
goto abort_cmd;
}
if (ide->do_initial_read)
{
ide->do_initial_read = 0;
ide->sector_pos = 0;
hdd_read_sectors(&ide->hdd_file, ide_get_sector(ide), ide->secount ? ide->secount : 256, ide->sector_buffer);
}
memcpy(ide->buffer, &ide->sector_buffer[ide->sector_pos*512], 512);
ide->sector_pos++;
ide->pos=0;
ide->atastat = DRQ_STAT | READY_STAT | DSC_STAT;
if (!ide->blockcount)// || ide->secount == 1)
{
// pclog("Read multiple int\n");
ide_irq_raise(ide);
}
ide->blockcount++;
if (ide->blockcount >= ide->blocksize)
ide->blockcount = 0;
readflash_set(READFLASH_HDC, ide->drive);
return;
case WIN_WRITE:
case WIN_WRITE_NORETRY:
if (IDE_DRIVE_IS_CDROM(ide)) {
goto abort_cmd;
}
hdd_write_sectors(&ide->hdd_file, ide_get_sector(ide), 1, ide->buffer);
ide_irq_raise(ide);
ide->secount = (ide->secount - 1) & 0xff;
if (ide->secount)
{
ide->atastat = DRQ_STAT | READY_STAT | DSC_STAT;
ide->pos=0;
ide_next_sector(ide);
}
else
ide->atastat = READY_STAT | DSC_STAT;
readflash_set(READFLASH_HDC, ide->drive);
return;
case WIN_WRITE_DMA:
if (IDE_DRIVE_IS_CDROM(ide)) {
goto abort_cmd;
}
if (ide_bus_master_write_data)
{
if (ide_bus_master_write_data(ide_board, (uint8_t *)ide->buffer, 512, ide_bus_master_p))
timer_set_delay_u64(&ide_timer[ide_board], 6*IDE_TIME); /*DMA not performed, try again later*/
else
{
/*DMA successful*/
hdd_write_sectors(&ide->hdd_file, ide_get_sector(ide), 1, ide->buffer);
ide->atastat = DRQ_STAT | READY_STAT | DSC_STAT;
ide->secount = (ide->secount - 1) & 0xff;
if (ide->secount)
{
ide_next_sector(ide);
ide->atastat = BUSY_STAT;
timer_set_delay_u64(&ide_timer[ide_board], 6*IDE_TIME);
}
else
{
ide_irq_raise(ide);
}
}
}
readflash_set(READFLASH_HDC, ide->drive);
return;
case WIN_WRITE_MULTIPLE:
if (IDE_DRIVE_IS_CDROM(ide)) {
goto abort_cmd;
}
hdd_write_sectors(&ide->hdd_file, ide_get_sector(ide), 1, ide->buffer);
ide->blockcount++;
if (ide->blockcount >= ide->blocksize || ide->secount == 1)
{
ide->blockcount = 0;
ide_irq_raise(ide);
}
ide->secount = (ide->secount - 1) & 0xff;
if (ide->secount)
{
ide->atastat = DRQ_STAT | READY_STAT | DSC_STAT;
ide->pos=0;
ide_next_sector(ide);
}
else
ide->atastat = READY_STAT | DSC_STAT;
readflash_set(READFLASH_HDC, ide->drive);
return;
case WIN_VERIFY:
case WIN_VERIFY_ONCE:
if (IDE_DRIVE_IS_CDROM(ide)) {
goto abort_cmd;
}
ide->pos=0;
ide->atastat = READY_STAT | DSC_STAT;
// pclog("Read verify callback %i %i %i offset %08X %i left\n",ide.sector,ide.cylinder,ide.head,addr,ide.secount);
ide_irq_raise(ide);
readflash_set(READFLASH_HDC, ide->drive);
return;
case WIN_FORMAT:
if (IDE_DRIVE_IS_CDROM(ide)) {
goto abort_cmd;
}
hdd_format_sectors(&ide->hdd_file, ide_get_sector(ide), ide->secount);
ide->atastat = READY_STAT | DSC_STAT;
ide_irq_raise(ide);
readflash_set(READFLASH_HDC, ide->drive);
return;
case WIN_DRIVE_DIAGNOSTICS:
ide_set_signature(ide);
ide->error=1; /*No error detected*/
if (IDE_DRIVE_IS_CDROM(ide))
{
ide->atastat = 0;
}
else
{
ide->atastat = READY_STAT | DSC_STAT;
ide_irq_raise(ide);
}
return;
case WIN_SPECIFY: /* Initialize Drive Parameters */
if (IDE_DRIVE_IS_CDROM(ide)) {
pclog("IS CDROM - ABORT\n");
goto abort_cmd;
}
ide->hdd_file.spt = ide->secount;
ide->hdd_file.hpc = ide->head+1;
ide->atastat = READY_STAT | DSC_STAT;
// pclog("SPECIFY - %i sectors per track, %i heads per cylinder %i %i\n",ide->spt,ide->hpc,cur_ide[ide_board],ide_board);
ide_irq_raise(ide);
return;
case WIN_PIDENTIFY: /* Identify Packet Device */
if (IDE_DRIVE_IS_CDROM(ide)) {
// pclog("ATAPI identify\n");
atapi_dev->bus.devices[0]->atapi_identify(ide->buffer, atapi_dev->bus.device_data[0]);
ide->pos=0;
ide->error=0;
ide->atastat = DRQ_STAT | READY_STAT | DSC_STAT;
ide_irq_raise(ide);
return;
}
// pclog("Not ATAPI\n");
goto abort_cmd;
case WIN_SET_MULTIPLE_MODE:
if (IDE_DRIVE_IS_CDROM(ide)) {
pclog("IS CDROM - ABORT\n");
goto abort_cmd;
}
ide->blocksize = ide->secount;
ide->atastat = READY_STAT | DSC_STAT;
pclog("Set multiple mode - %i\n", ide->blocksize);
ide_irq_raise(ide);
return;
case WIN_SETIDLE1: /* Idle */
goto abort_cmd;
case WIN_IDENTIFY: /* Identify Device */
if (ide->type == IDE_NONE)
{
goto abort_cmd;
}
if (IDE_DRIVE_IS_CDROM(ide))
{
ide_set_signature(ide);
goto abort_cmd;
}
else
{
ide_identify(ide);
ide->pos=0;
ide->atastat = DRQ_STAT | READY_STAT | DSC_STAT;
// pclog("ID callback\n");
ide_irq_raise(ide);
}
return;
case WIN_SET_FEATURES:
if (ide->type == IDE_NONE)
goto abort_cmd;
if (!IDE_DRIVE_IS_CDROM(ide))
goto abort_cmd;
if (!atapi_dev->bus.devices[0]->atapi_set_feature(ide->cylprecomp, ide->secount, atapi_dev->bus.device_data[0]))
goto abort_cmd;
ide->atastat = READY_STAT | DSC_STAT;
ide_irq_raise(ide);
return;
case WIN_CHECK_POWER_MODE:
if (ide->type == IDE_NONE)
{
goto abort_cmd;
}
ide->secount = 0xff;
ide->atastat = READY_STAT | DSC_STAT;
ide_irq_raise(ide);
return;
case WIN_PACKETCMD: /* ATAPI Packet */
if (!IDE_DRIVE_IS_CDROM(ide)) goto abort_cmd;
atapi_process_packet(atapi_dev);
return;
}
abort_cmd:
ide->command = 0;
ide->atastat = READY_STAT | ERR_STAT | DSC_STAT;
ide->error = ABRT_ERR;
ide->pos = 0;
ide_irq_raise(ide);
}
void ide_callback_pri()
{
callbackide(0);
}
void ide_callback_sec()
{
callbackide(1);
}
void ide_write_pri(uint16_t addr, uint8_t val, void *priv)
{
writeide(0, addr, val);
}
void ide_write_pri_w(uint16_t addr, uint16_t val, void *priv)
{
writeidew(0, val);
}
void ide_write_pri_l(uint16_t addr, uint32_t val, void *priv)
{
writeidel(0, val);
}
uint8_t ide_read_pri(uint16_t addr, void *priv)
{
return readide(0, addr);
}
uint16_t ide_read_pri_w(uint16_t addr, void *priv)
{
return readidew(0);
}
uint32_t ide_read_pri_l(uint16_t addr, void *priv)
{
return readidel(0);
}
void ide_write_sec(uint16_t addr, uint8_t val, void *priv)
{
writeide(1, addr, val);
}
void ide_write_sec_w(uint16_t addr, uint16_t val, void *priv)
{
writeidew(1, val);
}
void ide_write_sec_l(uint16_t addr, uint32_t val, void *priv)
{
writeidel(1, val);
}
uint8_t ide_read_sec(uint16_t addr, void *priv)
{
return readide(1, addr);
}
uint16_t ide_read_sec_w(uint16_t addr, void *priv)
{
return readidew(1);
}
uint32_t ide_read_sec_l(uint16_t addr, void *priv)
{
return readidel(1);
}
void ide_pri_enable()
{
io_sethandler(0x01f0, 0x0008, ide_read_pri, ide_read_pri_w, ide_read_pri_l, ide_write_pri, ide_write_pri_w, ide_write_pri_l, NULL);
io_sethandler(0x03f6, 0x0001, ide_read_pri, NULL, NULL, ide_write_pri, NULL, NULL , NULL);
}
void ide_pri_disable()
{
io_removehandler(0x01f0, 0x0008, ide_read_pri, ide_read_pri_w, ide_read_pri_l, ide_write_pri, ide_write_pri_w, ide_write_pri_l, NULL);
io_removehandler(0x03f6, 0x0001, ide_read_pri, NULL, NULL, ide_write_pri, NULL, NULL , NULL);
}
void ide_sec_enable()
{
io_sethandler(0x0170, 0x0008, ide_read_sec, ide_read_sec_w, ide_read_sec_l, ide_write_sec, ide_write_sec_w, ide_write_sec_l, NULL);
io_sethandler(0x0376, 0x0001, ide_read_sec, NULL, NULL, ide_write_sec, NULL, NULL , NULL);
}
void ide_sec_disable()
{
io_removehandler(0x0170, 0x0008, ide_read_sec, ide_read_sec_w, ide_read_sec_l, ide_write_sec, ide_write_sec_w, ide_write_sec_l, NULL);
io_removehandler(0x0376, 0x0001, ide_read_sec, NULL, NULL, ide_write_sec, NULL, NULL , NULL);
}
static void *ide_init()
{
ide_pri_enable();
ide_sec_enable();
timer_add(&ide_timer[0], ide_callback_pri, NULL, 0);
timer_add(&ide_timer[1], ide_callback_sec, NULL, 0);
return (void *)-1;
}
static void ide_close(void *p)
{
}
void ide_set_bus_master(int (*read_data)(int channel, uint8_t *data, int size, void *p), int (*write_data)(int channel, uint8_t *data, int size, void *p), void (*set_irq)(int channel, void *p), void *p)
{
ide_bus_master_read_data = read_data;
ide_bus_master_write_data = write_data;
ide_bus_master_set_irq = set_irq;
ide_bus_master_p = p;
}
device_t ide_device =
{
"Standard IDE",
DEVICE_AT,
ide_init,
ide_close,
NULL,
NULL,
NULL,
NULL,
NULL
};
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