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pcem/src/ide.c

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/*RPCemu v0.6 by Tom Walker
IDE emulation*/
//#define RPCEMU_IDE
#define IDE_TIME (5 * 100 * (1 << TIMER_SHIFT))
#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>
#ifdef RPCEMU_IDE
#include "rpcemu.h"
#include "iomd.h"
#include "arm.h"
#else
#include "ibm.h"
#include "io.h"
#include "pic.h"
#include "timer.h"
#endif
#include "ide.h"
/* Bits of 'atastat' */
#define ERR_STAT 0x01
#define DRQ_STAT 0x08 /* Data request */
#define DSC_STAT 0x10
#define SERVICE_STAT 0x10
#define READY_STAT 0x40
#define BUSY_STAT 0x80
/* Bits of 'error' */
#define ABRT_ERR 0x04 /* Command aborted */
#define MCR_ERR 0x08 /* Media change request */
/* 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_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_IDENTIFY 0xEC /* Ask drive to identify itself */
/* ATAPI Commands */
#define GPCMD_INQUIRY 0x12
#define GPCMD_MODE_SELECT_10 0x55
#define GPCMD_MODE_SENSE_10 0x5a
#define GPCMD_PAUSE_RESUME 0x4b
#define GPCMD_PLAY_AUDIO_12 0xa5
#define GPCMD_PLAY_AUDIO_MSF 0x47
#define GPCMD_PREVENT_REMOVAL 0x1e
#define GPCMD_READ_10 0x28
#define GPCMD_READ_CD 0xbe
#define GPCMD_READ_CDROM_CAPACITY 0x25
#define GPCMD_READ_HEADER 0x44
#define GPCMD_READ_SUBCHANNEL 0x42
#define GPCMD_READ_TOC_PMA_ATIP 0x43
#define GPCMD_REQUEST_SENSE 0x03
#define GPCMD_SEEK 0x2b
#define GPCMD_SEND_DVD_STRUCTURE 0xad
#define GPCMD_SET_SPEED 0xbb
#define GPCMD_START_STOP_UNIT 0x1b
#define GPCMD_TEST_UNIT_READY 0x00
/* Mode page codes for mode sense/set */
#define GPMODE_R_W_ERROR_PAGE 0x01
#define GPMODE_CDROM_PAGE 0x0d
#define GPMODE_CDROM_AUDIO_PAGE 0x0e
#define GPMODE_CAPABILITIES_PAGE 0x2a
#define GPMODE_ALL_PAGES 0x3f
/* ATAPI Sense Keys */
#define SENSE_NONE 0
#define SENSE_NOT_READY 2
#define SENSE_ILLEGAL_REQUEST 5
#define SENSE_UNIT_ATTENTION 6
/* ATAPI Additional Sense Codes */
#define ASC_ILLEGAL_OPCODE 0x20
#define ASC_MEDIUM_NOT_PRESENT 0x3a
/* Tell RISC OS that we have a 4x CD-ROM drive (600kb/sec data, 706kb/sec raw).
Not that it means anything */
#define CDROM_SPEED 706
/** Evaluate to non-zero if the currently selected drive is an ATAPI device */
#define IDE_DRIVE_IS_CDROM(ide) (ide->type == IDE_CDROM)
/*
\
(!ide.drive)*/
ATAPI *atapi;
enum
{
IDE_NONE = 0,
IDE_HDD,
IDE_CDROM
};
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 packlen;
int spt,hpc;
int tracks;
int packetstatus;
int cdpos,cdlen;
uint8_t asc;
int discchanged;
int reset;
FILE *hdfile;
uint16_t buffer[65536];
int irqstat;
int service;
int lba;
uint32_t lba_addr;
int skip512;
int blocksize, blockcount;
} IDE;
IDE ide_drives[4];
IDE *ext_ide;
char ide_fn[2][512];
int (*ide_bus_master_read_sector)(int channel, uint8_t *data);
int (*ide_bus_master_write_sector)(int channel, uint8_t *data);
void (*ide_bus_master_set_irq)(int channel);
static void callreadcd(IDE *ide);
static void atapicommand(int ide_board);
int idecallback[2] = {0, 0};
int cur_ide[2];
uint8_t getstat(IDE *ide) { return ide->atastat; }
static inline void ide_irq_raise(IDE *ide)
{
// pclog("IDE_IRQ_RAISE\n");
if (!(ide->fdisk&2)) {
#ifdef RPCEMU_IDE
iomd.irqb.status |= IOMD_IRQB_IDE;
updateirqs();
#else
// if (ide->board && !ide->irqstat) pclog("IDE_IRQ_RAISE\n");
picint((ide->board)?(1<<15):(1<<14));
#endif
}
ide->irqstat=1;
ide->service=1;
}
static inline void ide_irq_lower(IDE *ide)
{
// pclog("IDE_IRQ_LOWER\n");
// if (ide.board == 0) {
#ifdef RPCEMU_IDE
iomd.irqb.status &= ~IOMD_IRQB_IDE;
updateirqs();
#else
picintc((ide->board)?(1<<15):(1<<14));
#endif
// }
ide->irqstat=0;
}
void ide_irq_update(IDE *ide)
{
#ifdef RPCEMU_IDE
if (ide->irqstat && !(iomd.irqb.status & IOMD_IRQB_IDE) && !(ide->fdisk & 2)) {
iomd.irqb.status |= IOMD_IRQB_IDE;
updateirqs();
}
else if (iomd.irqb.status & IOMD_IRQB_IDE)
{
iomd.irqb.status &= ~IOMD_IRQB_IDE;
updateirqs();
}
#else
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));
#endif
}
/**
* 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.
*/
static 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;
}
}
/**
* Copy a string into a buffer, padding with spaces. Does not add string
* terminator.
*
* @param buf Destination buffer
* @param buf_size Size of destination buffer to fill in. Strings shorter than
* this length will be padded with spaces.
* @param src Source string
*/
static void
ide_padstr8(uint8_t *buf, int buf_size, const char *src)
{
int i;
for (i = 0; i < buf_size; i++) {
if (*src != '\0') {
buf[i] = *src++;
} else {
buf[i] = ' ';
}
}
}
/**
* 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 */
#ifdef RPCEMU_IDE
ide->buffer[1] = 65535; /* Cylinders */
ide->buffer[3] = 16; /* Heads */
ide->buffer[6] = 63; /* Sectors */
#else
ide->buffer[1] = hdc[cur_ide[0]].tracks; /* Cylinders */
ide->buffer[3] = hdc[cur_ide[0]].hpc; /* Heads */
ide->buffer[6] = hdc[cur_ide[0]].spt; /* Sectors */
#endif
ide_padstr((char *) (ide->buffer + 10), "", 20); /* Serial Number */
ide_padstr((char *) (ide->buffer + 23), "v1.0", 8); /* Firmware */
#ifdef RPCEMU_IDE
ide_padstr((char *) (ide->buffer + 27), "RPCemuHD", 40); /* Model */
#else
ide_padstr((char *) (ide->buffer + 27), "PCemHD", 40); /* Model */
#endif
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;
#ifdef RPCEMU_IDE
ide->buffer[60] = (65535 * 16 * 63) & 0xFFFF; /* Total addressable sectors (LBA) */
ide->buffer[61] = (65535 * 16 * 63) >> 16;
#else
ide->buffer[60] = (hdc[cur_ide[0]].tracks * hdc[cur_ide[0]].hpc * hdc[cur_ide[0]].spt) & 0xFFFF; /* Total addressable sectors (LBA) */
ide->buffer[61] = (hdc[cur_ide[0]].tracks * hdc[cur_ide[0]].hpc * hdc[cur_ide[0]].spt) >> 16;
#endif
ide->buffer[63] = 7; /*Multiword DMA*/
ide->buffer[80] = 0xe; /*ATA-1 to ATA-3 supported*/
}
/**
* Fill in ide->buffer with the output of the "IDENTIFY PACKET DEVICE" command
*/
static void ide_atapi_identify(IDE *ide)
{
memset(ide->buffer, 0, 512);
ide->buffer[0] = 0x8000 | (5<<8) | 0x80 | (2<<5); /* ATAPI device, CD-ROM drive, removable media, accelerated DRQ */
ide_padstr((char *) (ide->buffer + 10), "", 20); /* Serial Number */
ide_padstr((char *) (ide->buffer + 23), "v1.0", 8); /* Firmware */
#ifdef RPCEMU_IDE
ide_padstr((char *) (ide->buffer + 27), "RPCemuCD", 40); /* Model */
#else
ide_padstr((char *) (ide->buffer + 27), "PCemCD", 40); /* Model */
#endif
ide->buffer[49] = 0x200; /* LBA supported */
}
/**
* Fill in ide->buffer with the output of the ATAPI "MODE SENSE" command
*
* @param pos Offset within the buffer to start filling in data
*
* @return Offset within the buffer after the end of the data
*/
static uint32_t ide_atapi_mode_sense(IDE *ide, uint32_t pos, uint8_t type)
{
uint8_t *buf = (uint8_t *) ide->buffer;
// pclog("ide_atapi_mode_sense %02X\n",type);
if (type==GPMODE_ALL_PAGES || type==GPMODE_R_W_ERROR_PAGE)
{
/* &01 - Read error recovery */
buf[pos++] = GPMODE_R_W_ERROR_PAGE;
buf[pos++] = 6; /* Page length */
buf[pos++] = 0; /* Error recovery parameters */
buf[pos++] = 3; /* Read retry count */
buf[pos++] = 0; /* Reserved */
buf[pos++] = 0; /* Reserved */
buf[pos++] = 0; /* Reserved */
buf[pos++] = 0; /* Reserved */
}
if (type==GPMODE_ALL_PAGES || type==GPMODE_CDROM_PAGE)
{
/* &0D - CD-ROM Parameters */
buf[pos++] = GPMODE_CDROM_PAGE;
buf[pos++] = 6; /* Page length */
buf[pos++] = 0; /* Reserved */
buf[pos++] = 1; /* Inactivity time multiplier *NEEDED BY RISCOS* value is a guess */
buf[pos++] = 0; buf[pos++] = 60; /* MSF settings */
buf[pos++] = 0; buf[pos++] = 75; /* MSF settings */
}
if (type==GPMODE_ALL_PAGES || type==GPMODE_CDROM_AUDIO_PAGE)
{
/* &0e - CD-ROM Audio Control Parameters */
buf[pos++] = GPMODE_CDROM_AUDIO_PAGE;
buf[pos++] = 0xE; /* Page length */
buf[pos++] = 4; /* Reserved */
buf[pos++] = 0; /* Reserved */
buf[pos++] = 0; /* Reserved */
buf[pos++] = 0; /* Reserved */
buf[pos++] = 0; buf[pos++] = 75; /* Logical audio block per second */
buf[pos++] = 1; /* CDDA Output Port 0 Channel Selection */
buf[pos++] = 0xFF; /* CDDA Output Port 0 Volume */
buf[pos++] = 2; /* CDDA Output Port 1 Channel Selection */
buf[pos++] = 0xFF; /* CDDA Output Port 1 Volume */
buf[pos++] = 0; /* CDDA Output Port 2 Channel Selection */
buf[pos++] = 0; /* CDDA Output Port 2 Volume */
buf[pos++] = 0; /* CDDA Output Port 3 Channel Selection */
buf[pos++] = 0; /* CDDA Output Port 3 Volume */
}
if (type==GPMODE_ALL_PAGES || type==GPMODE_CAPABILITIES_PAGE)
{
// pclog("Capabilities page\n");
/* &2A - CD-ROM capabilities and mechanical status */
buf[pos++] = GPMODE_CAPABILITIES_PAGE;
buf[pos++] = 0x12; /* Page length */
buf[pos++] = 0; buf[pos++] = 0; /* CD-R methods */
buf[pos++] = 1; /* Supports audio play, not multisession */
buf[pos++] = 0; /* Some other stuff not supported */
buf[pos++] = 0; /* Some other stuff not supported (lock state + eject) */
buf[pos++] = 0; /* Some other stuff not supported */
buf[pos++] = (uint8_t) (CDROM_SPEED >> 8);
buf[pos++] = (uint8_t) CDROM_SPEED; /* Maximum speed */
buf[pos++] = 0; buf[pos++] = 2; /* Number of audio levels - on and off only */
buf[pos++] = 0; buf[pos++] = 0; /* Buffer size - none */
buf[pos++] = (uint8_t) (CDROM_SPEED >> 8);
buf[pos++] = (uint8_t) CDROM_SPEED; /* Current speed */
buf[pos++] = 0; /* Reserved */
buf[pos++] = 0; /* Drive digital format */
buf[pos++] = 0; /* Reserved */
buf[pos++] = 0; /* Reserved */
}
return pos;
}
/*
* 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->hpc;
int sectors = ide->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->spt + 1)) {
ide->sector = 1;
ide->head++;
if (ide->head == ide->hpc) {
ide->head = 0;
ide->cylinder++;
}
}
}
}
#ifdef RPCEMU_IDE
static void loadhd(IDE *ide, int d, const char *fn)
{
char pathname[512];
append_filename(pathname, rpcemu_get_datadir(), fn, 512);
rpclog("Loading %s\n",pathname);
if (ide->hdfile == NULL) {
/* Try to open existing hard disk image */
ide->hdfile = fopen64(pathname, "rb+");
if (ide->hdfile == NULL) {
/* Failed to open existing hard disk image */
if (errno == ENOENT) {
/* Failed because it does not exist,
so try to create new file */
ide->hdfile = fopen64(pathname, "wb+");
if (ide->hdfile == NULL) {
fatal("Cannot create file '%s': %s",
pathname, strerror(errno));
}
} else {
/* Failed for another reason */
fatal("Cannot open file '%s': %s",
pathname, strerror(errno));
}
}
}
fseek(ide->hdfile, 0xfc1, SEEK_SET);
ide->spt = getc(ide->hdfile);
ide->hpc = getc(ide->hdfile);
ide->skip512 = 1;
// rpclog("First check - spt %i hpc %i\n",ide.spt[0],ide.hpc[0]);
if (!ide->spt || !ide->hpc)
{
fseek(ide->hdfile, 0xdc1, SEEK_SET);
ide->spt = getc(ide->hdfile);
ide->hpc = getc(ide->hdfile);
// rpclog("Second check - spt %i hpc %i\n",ide.spt[0],ide.hpc[0]);
ide->skip512 = 0;
if (!ide->spt || !ide->hpc)
{
ide->spt=63;
ide->hpc=16;
ide->skip512 = 1;
// rpclog("Final check - spt %i hpc %i\n",ide.spt[0],ide.hpc[0]);
}
}
ide->type = IDE_HDD;
rpclog("%i %i %i\n",ide->spt,ide->hpc,ide->skip512);
}
#else
static void loadhd(IDE *ide, int d, const char *fn)
{
if (ide->hdfile == NULL) {
/* Try to open existing hard disk image */
ide->hdfile = fopen64(fn, "rb+");
if (ide->hdfile == NULL) {
/* Failed to open existing hard disk image */
if (errno == ENOENT) {
/* Failed because it does not exist,
so try to create new file */
ide->hdfile = fopen64(fn, "wb+");
if (ide->hdfile == NULL) {
ide->type = IDE_NONE;
/* fatal("Cannot create file '%s': %s",
fn, strerror(errno));*/
return;
}
} else {
/* Failed for another reason */
ide->type = IDE_NONE;
/* fatal("Cannot open file '%s': %s",
fn, strerror(errno));*/
return;
}
}
}
ide->spt = hdc[d].spt;
ide->hpc = hdc[d].hpc;
ide->tracks = hdc[d].tracks;
ide->type = IDE_HDD;
}
#endif
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;
if (ide_drives[d].hdfile != NULL) {
fclose(ide_drives[d].hdfile);
ide_drives[d].hdfile = NULL;
}
ide_drives[d].atastat = READY_STAT | DSC_STAT;
ide_drives[d].service = 0;
ide_drives[d].board = (d & 2) ? 1 : 0;
}
idecallback[0]=idecallback[1]=0;
#ifdef RPCEMU_IDE
loadhd(&ide_drives[0], 0, "hd4.hdf");
if (!config.cdromenabled) {
loadhd(&ide_drives[1], 1, "hd5.hdf");
}
else
ide_drives[1].type = IDE_CDROM;
#else
loadhd(&ide_drives[0], 0, ide_fn[0]);
loadhd(&ide_drives[1], 1, ide_fn[1]);
if (cdrom_enabled)
ide_drives[2].type = IDE_CDROM;
#endif
cur_ide[0] = 0;
cur_ide[1] = 2;
// ide_drives[1].type = IDE_CDROM;
}
int idetimes=0;
void writeidew(int ide_board, uint16_t val)
{
IDE *ide = &ide_drives[cur_ide[ide_board]];
#ifndef RPCEMU_IDE
/* if (ide_board && (cr0&1) && !(eflags&VM_FLAG))
{
// pclog("Failed write IDE %04X:%08X\n",CS,pc);
return;
}*/
#endif
#ifdef _RPCEMU_BIG_ENDIAN
val=(val>>8)|(val<<8);
#endif
// pclog("Write IDEw %04X\n",val);
ide->buffer[ide->pos >> 1] = val;
ide->pos+=2;
if (ide->packetstatus==4)
{
if (ide->pos>=(ide->packlen+2))
{
ide->packetstatus=5;
timer_process();
idecallback[ide_board]=6*IDE_TIME;
timer_update_outstanding();
// pclog("Packet over!\n");
ide_irq_lower(ide);
}
return;
}
else if (ide->packetstatus==5) return;
else if (ide->command == WIN_PACKETCMD && ide->pos>=0xC)
{
ide->pos=0;
ide->atastat = BUSY_STAT;
ide->packetstatus=1;
/* idecallback[ide_board]=6*IDE_TIME;*/
timer_process();
callbackide(ide_board);
timer_update_outstanding();
// idecallback[ide_board]=60*IDE_TIME;
// if ((ide->buffer[0]&0xFF)==0x43) idecallback[ide_board]=1*IDE_TIME;
// pclog("Packet now waiting!\n");
/* if (ide->buffer[0]==0x243)
{
idetimes++;
output=3;
}*/
}
else if (ide->pos>=512)
{
ide->pos=0;
ide->atastat = BUSY_STAT;
timer_process();
if (ide->command == WIN_WRITE_MULTIPLE)
callbackide(ide_board);
else
idecallback[ide_board]=6*IDE_TIME;
timer_update_outstanding();
}
}
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];
#ifndef RPCEMU_IDE
/* if (ide_board && (cr0&1) && !(eflags&VM_FLAG))
{
// pclog("Failed write IDE %04X:%08X\n",CS,pc);
return;
}*/
#endif
// if ((cr0&1) && !(eflags&VM_FLAG))
// pclog("WriteIDE %04X %02X from %04X(%08X):%08X %i\n", addr, val, CS, cs, 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 != 0x1f6) 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->atastat = READY_STAT | DSC_STAT;
ide->error=1;
ide->secount=1;
ide->sector=1;
ide->head=0;
ide->cylinder=0;
ide->reset = 0;
idecallback[ide_board] = 0;
timer_update_outstanding();
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_process();
idecallback[ide_board]=100*IDE_TIME;
timer_update_outstanding();
return;
case WIN_RESTORE:
case WIN_SEEK:
// pclog("WIN_RESTORE start\n");
ide->atastat = READY_STAT;
timer_process();
idecallback[ide_board]=100*IDE_TIME;
timer_update_outstanding();
return;
case WIN_READ_MULTIPLE:
if (!ide->blocksize)
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_process();
idecallback[ide_board]=200*IDE_TIME;
timer_update_outstanding();
return;
case WIN_WRITE_MULTIPLE:
if (!ide->blocksize)
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_process();
idecallback[ide_board]=200*IDE_TIME;
timer_update_outstanding();
return;
case WIN_VERIFY:
#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_process();
idecallback[ide_board]=200*IDE_TIME;
timer_update_outstanding();
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_process();
idecallback[ide_board]=200*IDE_TIME;
timer_update_outstanding();
// pclog("SPECIFY\n");
// output=1;
return;
case WIN_DRIVE_DIAGNOSTICS: /* Execute Drive Diagnostics */
case WIN_PIDENTIFY: /* Identify Packet Device */
case WIN_SET_MULTIPLE_MODE: /*Set Multiple Mode*/
// output=1;
case WIN_SETIDLE1: /* Idle */
ide->atastat = BUSY_STAT;
timer_process();
callbackide(ide_board);
// idecallback[ide_board]=200*IDE_TIME;
timer_update_outstanding();
return;
case WIN_IDENTIFY: /* Identify Device */
case 0xEF:
// output=3;
// timetolive=500;
ide->atastat = BUSY_STAT;
timer_process();
idecallback[ide_board]=200*IDE_TIME;
timer_update_outstanding();
return;
case WIN_PACKETCMD: /* ATAPI Packet */
ide->packetstatus=0;
ide->atastat = BUSY_STAT;
timer_process();
idecallback[ide_board]=1;//30*IDE_TIME;
timer_update_outstanding();
ide->pos=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))
{
timer_process();
idecallback[ide_board]=500*IDE_TIME;
timer_update_outstanding();
ide->reset = 1;
ide->atastat = BUSY_STAT;
// pclog("IDE Reset\n");
}
ide->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;
uint16_t tempw;
addr|=0x80;
#ifndef RPCEMU_IDE
/* if (ide_board && (cr0&1) && !(eflags&VM_FLAG))
{
// pclog("Failed read IDE %04X:%08X\n",CS,pc);
return 0xFF;
}*/
#endif
// 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 != 0x1f6) 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);
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->fdisk & 4)
temp = 0x80;
else 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);
}
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);
}
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,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;
#ifndef RPCEMU_IDE
/* if (ide_board && (cr0&1) && !(eflags&VM_FLAG))
{
// pclog("Failed read IDEw %04X:%08X\n",CS,pc);
return 0xFFFF;
}*/
#endif
// return 0xFFFF;
// pclog("Read IDEw %04X %04X:%04X %02X %i %i\n",ide->buffer[ide->pos >> 1],CS,pc,opcode,ins, ide->pos);
//if (idedebug) pclog("Read IDEW %08X\n",PC);
temp = ide->buffer[ide->pos >> 1];
#ifdef _RPCEMU_BIG_ENDIAN
temp=(temp>>8)|(temp<<8);
#endif
ide->pos+=2;
if ((ide->pos>=512 && ide->command != WIN_PACKETCMD) || (ide->command == WIN_PACKETCMD && ide->pos>=ide->packlen))
{
// pclog("Over! packlen %i %i\n",ide->packlen,ide->pos);
ide->pos=0;
if (ide->command == WIN_PACKETCMD)// && ide.packetstatus==6)
{
// pclog("Call readCD\n");
callreadcd(ide);
}
else
{
ide->atastat = READY_STAT | DSC_STAT;
ide->packetstatus=0;
if (ide->command == WIN_READ || ide->command == WIN_READ_NORETRY || ide->command == WIN_READ_MULTIPLE)
{
ide->secount--;
if (ide->secount)
{
ide_next_sector(ide);
ide->atastat = BUSY_STAT;
timer_process();
if (ide->command == WIN_READ_MULTIPLE)
callbackide(ide_board);
else
idecallback[ide_board]=6*IDE_TIME;
timer_update_outstanding();
// 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]];
off64_t addr;
int c;
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 = READY_STAT | DSC_STAT;
ide->error=1;
ide->secount=1;
ide->sector=1;
ide->head=0;
ide->cylinder=0;
ide->reset = 0;
ide->blocksize = 0;
// 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;
if (IDE_DRIVE_IS_CDROM(ide)) {
ide->cylinder = 0xeb14;
ide->atastat = 0;
} else {
ide->cylinder = 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)) {
goto abort_cmd;
}
addr = ide_get_sector(ide) * 512;
// 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");
}*/
fseeko64(ide->hdfile, addr, SEEK_SET);
fread(ide->buffer, 512, 1, ide->hdfile);
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);
#ifndef RPCEMU_IDE
readflash=1;
#endif
return;
case WIN_READ_DMA:
if (IDE_DRIVE_IS_CDROM(ide)) {
goto abort_cmd;
}
addr = ide_get_sector(ide) * 512;
fseeko64(ide->hdfile, addr, SEEK_SET);
fread(ide->buffer, 512, 1, ide->hdfile);
ide->pos=0;
if (ide_bus_master_read_sector)
{
if (ide_bus_master_read_sector(ide_board, (uint8_t *)ide->buffer))
idecallback[ide_board]=6*IDE_TIME; /*DMA not performed, try again later*/
else
{
/*DMA successful*/
ide->atastat = DRQ_STAT | READY_STAT | DSC_STAT;
ide->secount--;
if (ide->secount)
{
ide_next_sector(ide);
ide->atastat = BUSY_STAT;
idecallback[ide_board]=6*IDE_TIME;
}
else
{
ide_irq_raise(ide);
ide_bus_master_set_irq(ide_board);
}
}
}
#ifndef RPCEMU_IDE
readflash=1;
#endif
return;
case WIN_READ_MULTIPLE:
if (IDE_DRIVE_IS_CDROM(ide)) {
goto abort_cmd;
}
addr = ide_get_sector(ide) * 512;
// pclog("Read multiple from %08X %i (%i) %i\n", addr, ide->blockcount, ide->blocksize, ide->secount);
fseeko64(ide->hdfile, addr, SEEK_SET);
fread(ide->buffer, 512, 1, ide->hdfile);
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;
#ifndef RPCEMU_IDE
readflash=1;
#endif
return;
case WIN_WRITE:
case WIN_WRITE_NORETRY:
if (IDE_DRIVE_IS_CDROM(ide)) {
goto abort_cmd;
}
addr = ide_get_sector(ide) * 512;
// pclog("Write sector callback %i %i %i offset %08X %i left %i\n",ide.sector,ide.cylinder,ide.head,addr,ide.secount,ide.spt);
fseeko64(ide->hdfile, addr, SEEK_SET);
fwrite(ide->buffer, 512, 1, ide->hdfile);
ide_irq_raise(ide);
ide->secount--;
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;
#ifndef RPCEMU_IDE
readflash=1;
#endif
return;
case WIN_WRITE_DMA:
if (IDE_DRIVE_IS_CDROM(ide)) {
goto abort_cmd;
}
if (ide_bus_master_write_sector)
{
if (ide_bus_master_write_sector(ide_board, (uint8_t *)ide->buffer))
idecallback[ide_board]=6*IDE_TIME; /*DMA not performed, try again later*/
else
{
/*DMA successful*/
addr = ide_get_sector(ide) * 512;
fseeko64(ide->hdfile, addr, SEEK_SET);
fwrite(ide->buffer, 512, 1, ide->hdfile);
ide->atastat = DRQ_STAT | READY_STAT | DSC_STAT;
ide->secount--;
if (ide->secount)
{
ide_next_sector(ide);
ide->atastat = BUSY_STAT;
idecallback[ide_board]=6*IDE_TIME;
}
else
{
ide_irq_raise(ide);
ide_bus_master_set_irq(ide_board);
}
}
}
#ifndef RPCEMU_IDE
readflash=1;
#endif
return;
case WIN_WRITE_MULTIPLE:
if (IDE_DRIVE_IS_CDROM(ide)) {
goto abort_cmd;
}
addr = ide_get_sector(ide) * 512;
// pclog("Write sector callback %i %i %i offset %08X %i left %i\n",ide.sector,ide.cylinder,ide.head,addr,ide.secount,ide.spt);
fseeko64(ide->hdfile, addr, SEEK_SET);
fwrite(ide->buffer, 512, 1, ide->hdfile);
ide->blockcount++;
if (ide->blockcount >= ide->blocksize || ide->secount == 1)
{
ide->blockcount = 0;
ide_irq_raise(ide);
}
ide->secount--;
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;
#ifndef RPCEMU_IDE
readflash=1;
#endif
return;
case WIN_VERIFY:
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);
#ifndef RPCEMU_IDE
readflash=1;
#endif
return;
case WIN_FORMAT:
if (IDE_DRIVE_IS_CDROM(ide)) {
goto abort_cmd;
}
addr = ide_get_sector(ide) * 512;
// pclog("Format cyl %i head %i offset %08X %08X %08X secount %i\n",ide.cylinder,ide.head,addr,addr>>32,addr,ide.secount);
fseeko64(ide->hdfile, addr, SEEK_SET);
memset(ide->buffer, 0, 512);
for (c=0;c<ide->secount;c++)
{
fwrite(ide->buffer, 512, 1, ide->hdfile);
}
ide->atastat = READY_STAT | DSC_STAT;
ide_irq_raise(ide);
#ifndef RPCEMU_IDE
readflash=1;
#endif
return;
case WIN_DRIVE_DIAGNOSTICS:
ide->error=1; /*No error detected*/
ide->atastat = READY_STAT | DSC_STAT;
ide_irq_raise(ide);
return;
case WIN_SPECIFY: /* Initialize Drive Parameters */
if (IDE_DRIVE_IS_CDROM(ide)) {
#ifndef RPCEMU_IDE
pclog("IS CDROM - ABORT\n");
#endif
goto abort_cmd;
}
ide->spt=ide->secount;
ide->hpc=ide->head+1;
ide->atastat = READY_STAT | DSC_STAT;
#ifndef RPCEMU_IDE
// pclog("SPECIFY - %i sectors per track, %i heads per cylinder %i %i\n",ide->spt,ide->hpc,cur_ide[ide_board],ide_board);
#endif
ide_irq_raise(ide);
return;
case WIN_PIDENTIFY: /* Identify Packet Device */
if (IDE_DRIVE_IS_CDROM(ide)) {
// pclog("ATAPI identify\n");
ide_atapi_identify(ide);
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)) {
#ifndef RPCEMU_IDE
pclog("IS CDROM - ABORT\n");
#endif
goto abort_cmd;
}
ide->blocksize = ide->secount;
ide->atastat = READY_STAT | DSC_STAT;
#ifndef RPCEMU_IDE
pclog("Set multiple mode - %i\n", ide->blocksize);
#endif
ide_irq_raise(ide);
return;
case WIN_SETIDLE1: /* Idle */
case 0xEF:
goto abort_cmd;
case WIN_IDENTIFY: /* Identify Device */
if (IDE_DRIVE_IS_CDROM(ide)) {
ide->secount=1;
ide->sector=1;
ide->cylinder=0xEB14;
ide->drive=ide->head=0;
goto abort_cmd;
}
if (ide->type != IDE_NONE)
{
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_PACKETCMD: /* ATAPI Packet */
if (!IDE_DRIVE_IS_CDROM(ide)) goto abort_cmd;
// pclog("Packet callback! %i %08X\n",ide->packetstatus,ide);
if (!ide->packetstatus)
{
ide->pos=0;
ide->secount = (uint8_t)((ide->secount&0xF8)|1);
ide->atastat = DRQ_STAT |(ide->atastat&ERR_STAT);
//ide_irq_raise(ide);
// pclog("1 Preparing to recieve packet max DRQ count %04X\n",ide->cylinder);
}
else if (ide->packetstatus==1)
{
ide->atastat = BUSY_STAT|(ide->atastat&ERR_STAT);
// pclog("Running ATAPI command 2\n");
atapicommand(ide_board);
// exit(-1);
}
else if (ide->packetstatus==2)
{
// pclog("packetstatus==2\n");
ide->atastat = READY_STAT;
ide->secount=3;
ide_irq_raise(ide);
// if (iomd.irqb.mask&2) output=1;
}
else if (ide->packetstatus==3)
{
ide->atastat = DRQ_STAT|(ide->atastat&ERR_STAT);
// rpclog("Recieve data packet 3! %02X\n",ide->atastat);
ide_irq_raise(ide);
ide->packetstatus=0xFF;
}
else if (ide->packetstatus==4)
{
ide->atastat = DRQ_STAT|(ide->atastat&ERR_STAT);
// pclog("Send data packet 4!\n");
ide_irq_raise(ide);
// ide.packetstatus=5;
ide->pos=2;
}
else if (ide->packetstatus==5)
{
// pclog("Packetstatus 5 !\n");
atapicommand(ide_board);
}
else if (ide->packetstatus==6) /*READ CD callback*/
{
ide->atastat = DRQ_STAT|(ide->atastat&ERR_STAT);
// pclog("Recieve data packet 6!\n");
ide_irq_raise(ide);
// ide.packetstatus=0xFF;
}
else if (ide->packetstatus==0x80) /*Error callback*/
{
// pclog("Packet error\n");
ide->atastat = READY_STAT | ERR_STAT;
ide_irq_raise(ide);
}
return;
}
abort_cmd:
ide->atastat = READY_STAT | ERR_STAT | DSC_STAT;
ide->error = ABRT_ERR;
ide_irq_raise(ide);
}
void ide_callback_pri()
{
idecallback[0] = 0;
callbackide(0);
}
void ide_callback_sec()
{
idecallback[1] = 0;
callbackide(1);
}
/*ATAPI CD-ROM emulation
This mostly seems to work. It is implemented only on Windows at the moment as
I haven't had time to implement any interfaces for it in the generic gui.
It mostly depends on driver files - cdrom-iso.c for ISO image files (in theory
on any platform) and cdrom-ioctl.c for Win32 IOCTL access. There's an ATAPI
interface defined in ide.h.
There are a couple of bugs in the CD audio handling.
*/
struct
{
int sensekey,asc,ascq;
} atapi_sense;
static void atapi_notready(IDE *ide)
{
/*Medium not present is 02/3A/--*/
/*cylprecomp is error number*/
/*SENSE/ASC/ASCQ*/
ide->atastat = READY_STAT | ERR_STAT; /*CHECK CONDITION*/
ide->error = (SENSE_NOT_READY << 4) | ABRT_ERR;
if (ide->discchanged) {
ide->error |= MCR_ERR;
atapi_sense.sensekey=6;
atapi_sense.asc=0x28;
} else {
atapi_sense.sensekey=2;
atapi_sense.asc = ASC_MEDIUM_NOT_PRESENT;
}
ide->discchanged=0;
ide->packetstatus=0x80;
idecallback[ide->board]=50*IDE_TIME;
}
void atapi_discchanged()
{
ext_ide->discchanged=1;
atapi_sense.sensekey=6;
atapi_sense.asc=0x28;
}
uint8_t atapi_prev;
int toctimes=0;
static void atapicommand(int ide_board)
{
IDE *ide = &ide_drives[cur_ide[ide_board]];
uint8_t *idebufferb = (uint8_t *) ide->buffer;
int c;
int len;
int msf;
int pos=0;
unsigned char temp;
uint32_t size;
#ifndef RPCEMU_IDE
pclog("New ATAPI command %02X %i\n",idebufferb[0],ins);
#endif
// readflash=1;
msf=idebufferb[1]&2;
ide->cdlen=0;
if (idebufferb[0]!=GPCMD_REQUEST_SENSE)
{
atapi_prev=idebufferb[0];
atapi_sense.sensekey=0;
atapi_sense.asc=0;
}
switch (idebufferb[0])
{
case GPCMD_TEST_UNIT_READY:
if (!atapi->ready()) { atapi_notready(ide); return; }
// if (atapi->ready())
// {
ide->packetstatus=2;
idecallback[ide_board]=50*IDE_TIME;
// }
// else
// {
// pclog("Medium not present!\n");
// }
break;
case GPCMD_REQUEST_SENSE: /* Used by ROS 4+ */
/*Will return 18 bytes of 0*/
memset(idebufferb,0,512);
// switch (atapi_prev)
// {
// case GPCMD_TEST_UNIT_READY:
idebufferb[0]=0x80|0x70;
idebufferb[2]=atapi_sense.sensekey;
idebufferb[12]=atapi_sense.asc;
idebufferb[13]=atapi_sense.ascq;
// break;
//
// default:
// fatal("Bad REQUEST_SENSE following command %02X\n",atapi_prev);
// }
ide->packetstatus=3;
ide->cylinder=18;
ide->secount=2;
ide->pos=0;
idecallback[ide_board]=60*IDE_TIME;
ide->packlen=18;
break;
case GPCMD_SET_SPEED:
ide->packetstatus=2;
idecallback[ide_board]=50*IDE_TIME;
break;
case GPCMD_READ_TOC_PMA_ATIP:
// pclog("Read TOC ready? %08X\n",ide);
if (!atapi->ready()) { atapi_notready(ide); return; }
toctimes++;
// if (toctimes==2) output=3;
// pclog("Read TOC %02X\n",idebufferb[9]);
switch (idebufferb[9]>>6)
{
case 0: /*Normal*/
len=idebufferb[8]+(idebufferb[7]<<8);
len=atapi->readtoc(idebufferb,idebufferb[6],msf,len,0);
break;
case 1: /*Multi session*/
len=idebufferb[8]+(idebufferb[7]<<8);
atapi->readtoc_session(idebufferb,msf,len);
idebufferb[0]=0; idebufferb[1]=0xA;
break;
default:
ide->atastat = READY_STAT | ERR_STAT; /*CHECK CONDITION*/
ide->error = (SENSE_ILLEGAL_REQUEST << 4) | ABRT_ERR;
if (ide->discchanged) {
ide->error |= MCR_ERR;
}
ide->discchanged=0;
atapi_sense.asc = ASC_ILLEGAL_OPCODE;
ide->packetstatus=0x80;
idecallback[ide_board]=50*IDE_TIME;
break;
/* pclog("Bad read TOC format\n");
pclog("Packet data :\n");
for (c=0;c<12;c++)
pclog("%02X ",idebufferb[c]);
pclog("\n");
exit(-1);*/
}
// pclog("ATAPI buffer len %i\n",len);
ide->packetstatus=3;
ide->cylinder=len;
ide->secount=2;
ide->pos=0;
idecallback[ide_board]=60*IDE_TIME;
ide->packlen=len;
return;
case GPCMD_READ_CD:
if (!atapi->ready()) { atapi_notready(ide); return; }
// pclog("Read CD : start LBA %02X%02X%02X%02X Length %02X%02X%02X Flags %02X\n",idebufferb[2],idebufferb[3],idebufferb[4],idebufferb[5],idebufferb[6],idebufferb[7],idebufferb[8],idebufferb[9]);
if (idebufferb[9]!=0x10)
{
ide->atastat = READY_STAT | ERR_STAT; /*CHECK CONDITION*/
ide->error = (SENSE_ILLEGAL_REQUEST << 4) | ABRT_ERR;
if (ide->discchanged) {
ide->error |= MCR_ERR;
}
ide->discchanged=0;
atapi_sense.asc = ASC_ILLEGAL_OPCODE;
ide->packetstatus=0x80;
idecallback[ide_board]=50*IDE_TIME;
break;
// pclog("Bad flags bits %02X\n",idebufferb[9]);
// exit(-1);
}
/* if (idebufferb[6] || idebufferb[7] || (idebufferb[8]!=1))
{
pclog("More than 1 sector!\n");
exit(-1);
}*/
ide->cdlen=(idebufferb[6]<<16)|(idebufferb[7]<<8)|idebufferb[8];
ide->cdpos=(idebufferb[2]<<24)|(idebufferb[3]<<16)|(idebufferb[4]<<8)|idebufferb[5];
// pclog("Read at %08X %08X\n",ide.cdpos,ide.cdpos*2048);
atapi->readsector(idebufferb,ide->cdpos);
#ifndef RPCEMU_IDE
readflash=1;
#endif
ide->cdpos++;
ide->cdlen--;
if (ide->cdlen>=0) ide->packetstatus=6;
else ide->packetstatus=3;
ide->cylinder=2048;
ide->secount=2;
ide->pos=0;
idecallback[ide_board]=60*IDE_TIME;
ide->packlen=2048;
return;
case GPCMD_READ_10:
if (!atapi->ready()) { atapi_notready(ide); return; }
// pclog("Read 10 : start LBA %02X%02X%02X%02X Length %02X%02X%02X Flags %02X\n",idebufferb[2],idebufferb[3],idebufferb[4],idebufferb[5],idebufferb[6],idebufferb[7],idebufferb[8],idebufferb[9]);
ide->cdlen=(idebufferb[7]<<8)|idebufferb[8];
ide->cdpos=(idebufferb[2]<<24)|(idebufferb[3]<<16)|(idebufferb[4]<<8)|idebufferb[5];
if (!ide->cdlen)
{
// pclog("All done - callback set\n");
ide->packetstatus=2;
idecallback[ide_board]=20*IDE_TIME;
break;
}
atapi->readsector(idebufferb,ide->cdpos);
#ifndef RPCEMU_IDE
readflash=1;
#endif
ide->cdpos++;
ide->cdlen--;
if (ide->cdlen>=0) ide->packetstatus=6;
else ide->packetstatus=3;
ide->cylinder=2048;
ide->secount=2;
ide->pos=0;
idecallback[ide_board]=60*IDE_TIME;
ide->packlen=2048;
return;
case GPCMD_READ_HEADER:
if (!atapi->ready()) { atapi_notready(ide); return; }
if (msf)
{
ide->atastat = READY_STAT | ERR_STAT; /*CHECK CONDITION*/
ide->error = (SENSE_ILLEGAL_REQUEST << 4) | ABRT_ERR;
if (ide->discchanged) {
ide->error |= MCR_ERR;
}
ide->discchanged=0;
atapi_sense.asc = ASC_ILLEGAL_OPCODE;
ide->packetstatus=0x80;
idecallback[ide_board]=50*IDE_TIME;
break;
// pclog("Read Header MSF!\n");
// exit(-1);
}
for (c=0;c<4;c++) idebufferb[c+4]=idebufferb[c+2];
idebufferb[0]=1; /*2048 bytes user data*/
idebufferb[1]=idebufferb[2]=idebufferb[3]=0;
ide->packetstatus=3;
ide->cylinder=8;
ide->secount=2;
ide->pos=0;
idecallback[ide_board]=60*IDE_TIME;
ide->packlen=8;
return;
case GPCMD_MODE_SENSE_10:
// output=3;
// pclog("Mode sense - ready?\n");
if (!atapi->ready()) { atapi_notready(ide); return; }
len=(idebufferb[8]|(idebufferb[7]<<8));
//pclog("Mode sense %02X %i\n",idebufferb[2],len);
temp=idebufferb[2];
// switch (idebufferb[2])
// {
// case GPMODE_ALL_PAGES:
// case GPMODE_CAPABILITIES_PAGE:
for (c=0;c<len;c++) idebufferb[c]=0;
len = ide_atapi_mode_sense(ide,8,temp);
// break;
// default:
// for (c=0;c<len;c++) idebufferb[c]=0;
/* pclog("Bad mode sense\n");
pclog("Packet data :\n");
for (c=0;c<12;c++)
pclog("%02X\n",idebufferb[c]);
exit(-1);*/
// }
/*Set mode parameter header - bytes 0 & 1 are data length (filled out later),
byte 2 is media type*/
idebufferb[0]=len>>8;
idebufferb[1]=len&255;
idebufferb[2]=3; /*120mm data CD-ROM*/
// pclog("ATAPI buffer len %i\n",len);
/* for (c=0;c<len;c++) pclog("%02X ",idebufferb[c]);
pclog("\n");*/
ide->packetstatus=3;
ide->cylinder=len;
ide->secount=2;
// ide.atastat = DRQ_STAT;
ide->pos=0;
idecallback[ide_board]=1000*IDE_TIME;
ide->packlen=len;
// pclog("Sending packet\n");
return;
case GPCMD_MODE_SELECT_10:
// if (!atapi->ready()) { atapi_notready(); return; }
if (ide->packetstatus==5)
{
ide->atastat = 0;
// pclog("Recieve data packet!\n");
ide_irq_raise(ide);
ide->packetstatus=0xFF;
ide->pos=0;
// pclog("Length - %02X%02X\n",idebufferb[0],idebufferb[1]);
// pclog("Page %02X length %02X\n",idebufferb[8],idebufferb[9]);
}
else
{
len=(idebufferb[7]<<8)|idebufferb[8];
ide->packetstatus=4;
ide->cylinder=len;
ide->secount=2;
ide->pos=0;
idecallback[ide_board]=6*IDE_TIME;
ide->packlen=len;
/* pclog("Waiting for ARM to send packet %i\n",len);
pclog("Packet data :\n");
for (c=0;c<12;c++)
pclog("%02X ",idebufferb[c]);
pclog("\n");*/
}
return;
case GPCMD_PLAY_AUDIO_12:
if (!atapi->ready()) { atapi_notready(ide); return; }
/*This is apparently deprecated in the ATAPI spec, and apparently
has been since 1995 (!). Hence I'm having to guess most of it*/
pos=(idebufferb[3]<<16)|(idebufferb[4]<<8)|idebufferb[5];
len=(idebufferb[7]<<16)|(idebufferb[8]<<8)|idebufferb[9];
atapi->playaudio(pos,len,0);
ide->packetstatus=2;
idecallback[ide_board]=50*IDE_TIME;
break;
case GPCMD_PLAY_AUDIO_MSF:
if (!atapi->ready()) { atapi_notready(ide); return; }
pos=(idebufferb[3]<<16)|(idebufferb[4]<<8)|idebufferb[5];
len=(idebufferb[6]<<16)|(idebufferb[7]<<8)|idebufferb[8];
atapi->playaudio(pos,len,1);
ide->packetstatus=2;
idecallback[ide_board]=50*IDE_TIME;
break;
case GPCMD_READ_SUBCHANNEL:
if (!atapi->ready()) { /*pclog("Read subchannel not ready\n"); */atapi_notready(ide); return; }
temp=idebufferb[2]&0x40;
if (idebufferb[3]!=1)
{
// pclog("Read subchannel check condition %02X\n",idebufferb[3]);
ide->atastat = READY_STAT | ERR_STAT; /*CHECK CONDITION*/
ide->error = (SENSE_ILLEGAL_REQUEST << 4) | ABRT_ERR;
if (ide->discchanged) {
ide->error |= MCR_ERR;
}
ide->discchanged=0;
atapi_sense.asc = ASC_ILLEGAL_OPCODE;
ide->packetstatus=0x80;
idecallback[ide_board]=50*IDE_TIME;
break;
/* pclog("Bad read subchannel!\n");
pclog("Packet data :\n");
for (c=0;c<12;c++)
pclog("%02X\n",idebufferb[c]);
dumpregs();
exit(-1);*/
}
pos=0;
idebufferb[pos++]=0;
idebufferb[pos++]=0; /*Audio status*/
idebufferb[pos++]=0; idebufferb[pos++]=0; /*Subchannel length*/
idebufferb[pos++]=1; /*Format code*/
idebufferb[1]=atapi->getcurrentsubchannel(&idebufferb[5],msf);
// pclog("Read subchannel complete - audio status %02X\n",idebufferb[1]);
len=11+5;
if (!temp) len=4;
ide->packetstatus=3;
ide->cylinder=len;
ide->secount=2;
ide->pos=0;
idecallback[ide_board]=1000*IDE_TIME;
ide->packlen=len;
break;
case GPCMD_START_STOP_UNIT:
if (idebufferb[4]!=2 && idebufferb[4]!=3 && idebufferb[4])
{
ide->atastat = READY_STAT | ERR_STAT; /*CHECK CONDITION*/
ide->error = (SENSE_ILLEGAL_REQUEST << 4) | ABRT_ERR;
if (ide->discchanged) {
ide->error |= MCR_ERR;
}
ide->discchanged=0;
atapi_sense.asc = ASC_ILLEGAL_OPCODE;
ide->packetstatus=0x80;
idecallback[ide_board]=50*IDE_TIME;
break;
/* pclog("Bad start/stop unit command\n");
pclog("Packet data :\n");
for (c=0;c<12;c++)
pclog("%02X\n",idebufferb[c]);
exit(-1);*/
}
if (!idebufferb[4]) atapi->stop();
else if (idebufferb[4]==2) atapi->eject();
else atapi->load();
ide->packetstatus=2;
idecallback[ide_board]=50*IDE_TIME;
break;
case GPCMD_INQUIRY:
idebufferb[0] = 5; /*CD-ROM*/
idebufferb[1] = 0x80; /*Removable*/
idebufferb[2] = 0;
idebufferb[3] = 0x21;
idebufferb[4] = 31;
idebufferb[5] = 0;
idebufferb[6] = 0;
idebufferb[7] = 0;
#ifdef RPCEMU_IDE
ide_padstr8(idebufferb + 8, 8, "RPCemu"); /* Vendor */
ide_padstr8(idebufferb + 16, 16, "RPCemuCD"); /* Product */
#else
ide_padstr8(idebufferb + 8, 8, "PCem"); /* Vendor */
ide_padstr8(idebufferb + 16, 16, "PCemCD"); /* Product */
#endif
ide_padstr8(idebufferb + 32, 4, "v1.0"); /* Revision */
len=36;
ide->packetstatus=3;
ide->cylinder=len;
ide->secount=2;
ide->pos=0;
idecallback[ide_board]=60*IDE_TIME;
ide->packlen=len;
break;
case GPCMD_PREVENT_REMOVAL:
if (!atapi->ready()) { atapi_notready(ide); return; }
ide->packetstatus=2;
idecallback[ide_board]=50*IDE_TIME;
break;
case GPCMD_PAUSE_RESUME:
if (!atapi->ready()) { atapi_notready(ide); return; }
if (idebufferb[8]&1) atapi->resume();
else atapi->pause();
ide->packetstatus=2;
idecallback[ide_board]=50*IDE_TIME;
break;
case GPCMD_SEEK:
if (!atapi->ready()) { atapi_notready(ide); return; }
pos=(idebufferb[3]<<16)|(idebufferb[4]<<8)|idebufferb[5];
atapi->seek(pos);
ide->packetstatus=2;
idecallback[ide_board]=50*IDE_TIME;
break;
case GPCMD_READ_CDROM_CAPACITY:
if (!atapi->ready()) { atapi_notready(ide); return; }
size = atapi->size();
idebufferb[0] = (size >> 24) & 0xff;
idebufferb[1] = (size >> 16) & 0xff;
idebufferb[2] = (size >> 8) & 0xff;
idebufferb[3] = size & 0xff;
idebufferb[4] = (2048 >> 24) & 0xff;
idebufferb[5] = (2048 >> 16) & 0xff;
idebufferb[6] = (2048 >> 8) & 0xff;
idebufferb[7] = 2048 & 0xff;
len=8;
ide->packetstatus=3;
ide->cylinder=len;
ide->secount=2;
ide->pos=0;
idecallback[ide_board]=60*IDE_TIME;
ide->packlen=len;
break;
case GPCMD_SEND_DVD_STRUCTURE:
default:
ide->atastat = READY_STAT | ERR_STAT; /*CHECK CONDITION*/
ide->error = (SENSE_ILLEGAL_REQUEST << 4) | ABRT_ERR;
if (ide->discchanged) {
ide->error |= MCR_ERR;
}
ide->discchanged=0;
atapi_sense.asc = ASC_ILLEGAL_OPCODE;
ide->packetstatus=0x80;
idecallback[ide_board]=50*IDE_TIME;
break;
/* default:
pclog("Bad ATAPI command %02X\n",idebufferb[0]);
pclog("Packet data :\n");
for (c=0;c<12;c++)
pclog("%02X\n",idebufferb[c]);
exit(-1);*/
}
}
static void callreadcd(IDE *ide)
{
ide_irq_lower(ide);
if (ide->cdlen<=0)
{
// pclog("All done - callback set\n");
ide->packetstatus=2;
idecallback[ide->board]=20*IDE_TIME;
return;
}
// pclog("Continue readcd! %i blocks left\n",ide->cdlen);
ide->atastat = BUSY_STAT;
atapi->readsector((uint8_t *) ide->buffer, ide->cdpos);
#ifndef RPCEMU_IDE
readflash=1;
#endif
ide->cdpos++;
ide->cdlen--;
ide->packetstatus=6;
ide->cylinder=2048;
ide->secount=2;
ide->pos=0;
idecallback[ide->board]=60*IDE_TIME;
ide->packlen=2048;
}
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);
}
void ide_init()
{
ide_pri_enable();
ide_sec_enable();
ide_bus_master_read_sector = ide_bus_master_write_sector = NULL;
timer_add(ide_callback_pri, &idecallback[0], &idecallback[0], NULL);
timer_add(ide_callback_sec, &idecallback[1], &idecallback[1], NULL);
}
void ide_set_bus_master(int (*read_sector)(int channel, uint8_t *data), int (*write_sector)(int channel, uint8_t *data), void (*set_irq)(int channel))
{
ide_bus_master_read_sector = read_sector;
ide_bus_master_write_sector = write_sector;
ide_bus_master_set_irq = set_irq;
}
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