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ide.cpp
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/*
* UAE - The Un*x Amiga Emulator
*
* IDE HD/ATAPI CD emulation
*
* (c) 2006 - 2015 Toni Wilen
*/
#define IDE_LOG 0
#include "sysconfig.h"
#include "sysdeps.h"
#include "options.h"
#include "blkdev.h"
#include "filesys.h"
#include "gui.h"
#include "uae.h"
#include "memory.h"
#include "newcpu.h"
#include "threaddep/thread.h"
#include "debug.h"
#include "savestate.h"
#include "scsi.h"
#include "ide.h"
#include "ini.h"
/* STATUS bits */
#define IDE_STATUS_ERR 0x01 // 0
#define IDE_STATUS_IDX 0x02 // 1
#define IDE_STATUS_DRQ 0x08 // 3
#define IDE_STATUS_DSC 0x10 // 4
#define IDE_STATUS_DRDY 0x40 // 6
#define IDE_STATUS_BSY 0x80 // 7
#define ATAPI_STATUS_CHK IDE_STATUS_ERR
/* ERROR bits */
#define IDE_ERR_UNC 0x40
#define IDE_ERR_MC 0x20
#define IDE_ERR_IDNF 0x10
#define IDE_ERR_MCR 0x08
#define IDE_ERR_ABRT 0x04
#define IDE_ERR_NM 0x02
#define ATAPI_ERR_EOM 0x02
#define ATAPI_ERR_ILI 0x01
/* ATAPI interrupt reason (Sector Count) */
#define ATAPI_IO 0x02
#define ATAPI_CD 0x01
#define ATAPI_MAX_TRANSFER 32768
// 1 = need soft reset before ATAPI signature appears
#define ATAPIWEIRD 0
void ata_parse_identity(uae_u8 *out, struct uaedev_config_info *uci, bool *lba, bool *lba48, int *max_multiple)
{
struct uaedev_config_info uci2;
uae_u16 v;
memcpy(&uci2, uci, sizeof(struct uaedev_config_info));
*lba = false;
*lba48 = false;
*max_multiple = 0;
uci->blocksize = 512;
uci->pcyls = (out[1 * 2 + 0] << 8) | (out[1 * 2 + 1] << 0);
uci->pheads = (out[3 * 2 + 0] << 8) | (out[3 * 2 + 1] << 0);
uci->psecs = (out[6 * 2 + 0] << 8) | (out[6 * 2 + 1] << 0);
if (!uci->pcyls || !uci->pheads || !uci->psecs) {
uci->pcyls = uci2.pcyls;
uci->pheads = uci2.pheads;
uci->psecs = uci2.psecs;
}
v = (out[47 * 2 + 0] << 8) | (out[47 * 2 + 1] << 0);
if (v & 255) { // multiple mode?
*max_multiple = v & 255;
}
v = (out[53 * 2 + 0] << 8) | (out[53 * 2 + 1] << 0);
if (v & 1) { // 54-58 valid?
uci->pcyls = (out[54 * 2 + 0] << 8) | (out[54 * 2 + 1] << 0);
uci->pheads = (out[55 * 2 + 0] << 8) | (out[55 * 2 + 1] << 0);
uci->psecs = (out[56 * 2 + 0] << 8) | (out[56 * 2 + 1] << 0);
uci->max_lba = (out[57 * 2 + 0] << 24) | (out[57 * 2 + 1] << 16) | (out[58 * 2 + 0] << 8) | (out[58 * 2 + 1] << 0);
}
v = (out[49 * 2 + 0] << 8) | (out[49 * 2 + 1] << 0);
if (v & (1 << 9)) { // LBA supported?
uci->max_lba = (out[60 * 2 + 0] << 24) | (out[60 * 2 + 1] << 16) | (out[61 * 2 + 0] << 8) | (out[61 * 2 + 1] << 0);
*lba = true;
}
v = (out[83 * 2 + 0] << 8) | (out[83 * 2 + 1] << 0);
if ((v & 0xc000) == 0x4000 && (v & (1 << 10)) && (*lba)) { // LBA48 supported?
*lba48 = true;
uci->max_lba = (out[100 * 2 + 0] << 24) | (out[100 * 2 + 1] << 16) | (out[101 * 2 + 0] << 8) | (out[101 * 2 + 1] << 0);
uci->max_lba <<= 32;
uci->max_lba |= (out[102 * 2 + 0] << 24) | (out[102 * 2 + 1] << 16) | (out[103 * 2 + 0] << 8) | (out[103 * 2 + 1] << 0);
}
}
bool ata_get_identity(struct ini_data *ini, uae_u8 *out, bool overwrite)
{
if (!out)
return false;
if (overwrite) {
uae_u8 *out2;
int len;
if (!ini_getdata(ini, _T("IDENTITY"), _T("DATA"), &out2, &len))
return false;
if (len == 512) {
memcpy(out, out2, 512);
}
xfree(out2);
}
int v;
if (ini_getval(ini, _T("IDENTITY"), _T("multiple_mode"), &v)) {
if (v) {
out[59 * 2 + 1] |= 1;
out[47 * 2 + 0] = 0;
out[47 * 2 + 1] = v;
} else {
out[59 * 2 + 1] &= ~1;
}
}
return true;
}
uae_u16 adide_decode_word(uae_u16 w)
{
uae_u16 o = 0;
if (w & 0x8000)
o |= 0x0001;
if (w & 0x0001)
o |= 0x0002;
if (w & 0x4000)
o |= 0x0004;
if (w & 0x0002)
o |= 0x0008;
if (w & 0x2000)
o |= 0x0010;
if (w & 0x0004)
o |= 0x0020;
if (w & 0x1000)
o |= 0x0040;
if (w & 0x0008)
o |= 0x0080;
if (w & 0x0800)
o |= 0x0100;
if (w & 0x0010)
o |= 0x0200;
if (w & 0x0400)
o |= 0x0400;
if (w & 0x0020)
o |= 0x0800;
if (w & 0x0200)
o |= 0x1000;
if (w & 0x0040)
o |= 0x2000;
if (w & 0x0100)
o |= 0x4000;
if (w & 0x0080)
o |= 0x8000;
return o;
}
uae_u16 adide_encode_word(uae_u16 w)
{
uae_u16 o = 0;
if (w & 0x0001)
o |= 0x8000;
if (w & 0x0002)
o |= 0x0001;
if (w & 0x0004)
o |= 0x4000;
if (w & 0x0008)
o |= 0x0002;
if (w & 0x0010)
o |= 0x2000;
if (w & 0x0020)
o |= 0x0004;
if (w & 0x0040)
o |= 0x1000;
if (w & 0x0080)
o |= 0x0008;
if (w & 0x0100)
o |= 0x0800;
if (w & 0x0200)
o |= 0x0010;
if (w & 0x0400)
o |= 0x0400;
if (w & 0x0800)
o |= 0x0020;
if (w & 0x1000)
o |= 0x0200;
if (w & 0x2000)
o |= 0x0040;
if (w & 0x4000)
o |= 0x0100;
if (w & 0x8000)
o |= 0x0080;
return o;
}
static void ide_grow_buffer(struct ide_hdf *ide, int newsize)
{
if (ide->secbuf_size >= newsize)
return;
uae_u8 *oldbuf = ide->secbuf;
int oldsize = ide->secbuf_size;
ide->secbuf_size = newsize + 16384;
if (oldsize)
write_log(_T("IDE%d buffer %d -> %d\n"), ide->num, oldsize, ide->secbuf_size);
ide->secbuf = xmalloc(uae_u8, ide->secbuf_size);
memcpy(ide->secbuf, oldbuf, oldsize);
xfree(oldbuf);
}
static void sl(uae_u8 *d, int o)
{
o *= 2;
uae_u16 t = (d[o + 0] << 8) | d[o + 1];
d[o + 0] = d[o + 2];
d[o + 1] = d[o + 3];
d[o + 2] = t >> 8;
d[o + 3] = t;
}
static void ql(uae_u8 *d, int o)
{
sl(d, o + 1);
o *= 2;
uae_u16 t = (d[o + 0] << 8) | d[o + 1];
d[o + 0] = d[o + 6];
d[o + 1] = d[o + 7];
d[o + 6] = t >> 8;
d[o + 7] = t;
}
void ata_byteswapidentity(uae_u8 *d)
{
for (int i = 0; i < 512; i += 2)
{
uae_u8 t = d[i + 0];
d[i + 0] = d[i + 1];
d[i + 1] = t;
}
sl(d, 7);
sl(d, 57);
sl(d, 60);
sl(d, 98);
sl(d, 117);
sl(d, 210);
sl(d, 212);
sl(d, 215);
ql(d, 100);
ql(d, 230);
}
static void pl(struct ide_hdf *ide, int offset, uae_u32 l)
{
if (ide->byteswap) {
l = ((l >> 24) & 0x000000ff) | ((l >> 8) & 0x0000ff00) | ((l << 8) & 0x00ff0000) | ((l << 24) & 0xff000000);
}
ide->secbuf[offset * 2 + 0] = l;
ide->secbuf[offset * 2 + 1] = l >> 8;
ide->secbuf[offset * 2 + 2] = l >> 16;
ide->secbuf[offset * 2 + 3] = l >> 24;
}
static void pq(struct ide_hdf *ide, int offset, uae_u64 q)
{
if (ide->byteswap) {
pl(ide, offset + 0, q >> 32);
pl(ide, offset + 2, q >> 0);
} else {
pl(ide, offset + 0, q >> 0);
pl(ide, offset + 2, q >> 32);
}
}
static void pw (struct ide_hdf *ide, int offset, uae_u16 w)
{
if (ide->byteswap) {
w = (w >> 8) | (w << 8);
}
ide->secbuf[offset * 2 + 0] = (uae_u8)w;
ide->secbuf[offset * 2 + 1] = w >> 8;
}
static void pwand (struct ide_hdf *ide, int offset, uae_u16 w)
{
if (ide->byteswap) {
w = (w >> 8) | (w << 8);
}
ide->secbuf[offset * 2 + 0] &= ~((uae_u8)w);
ide->secbuf[offset * 2 + 1] &= ~(w >> 8);
}
static void pwor (struct ide_hdf *ide, int offset, uae_u16 w)
{
if (ide->byteswap) {
w = (w >> 8) | (w << 8);
}
ide->secbuf[offset * 2 + 0] |= (uae_u8)w;
ide->secbuf[offset * 2 + 1] |= w >> 8;
}
static void ps (struct ide_hdf *ide, int offset, const TCHAR *src, int max)
{
int i, len;
char *s;
s = ua (src);
len = strlen (s);
for (i = 0; i < max; i += 2) {
char c1 = ' ';
if (i < len)
c1 = s[i];
char c2 = ' ';
if (i + 1 < len)
c2 = s[i + 1];
uae_u16 w = (c1 << 0) | (c2 << 8);
if (ide->byteswap) {
w = (w >> 8) | (w << 8);
}
ide->secbuf[offset * 2 + 0] = w >> 8;
ide->secbuf[offset * 2 + 1] = w >> 0;
offset++;
}
xfree (s);
}
bool ide_isdrive (struct ide_hdf *ide)
{
return ide && (ide->hdhfd.size != 0 || ide->atapi);
}
static void ide_interrupt (struct ide_hdf *ide)
{
ide->regs.ide_status |= IDE_STATUS_BSY;
ide->regs.ide_status &= ~IDE_STATUS_DRQ;
ide->irq_delay = 2;
}
static void ide_fast_interrupt (struct ide_hdf *ide)
{
ide->regs.ide_status |= IDE_STATUS_BSY;
ide->regs.ide_status &= ~IDE_STATUS_DRQ;
ide->irq_delay = 1;
}
static bool ide_interrupt_do (struct ide_hdf *ide)
{
uae_u8 os = ide->regs.ide_status;
ide->regs.ide_status &= ~IDE_STATUS_DRQ;
if (ide->intdrq)
ide->regs.ide_status |= IDE_STATUS_DRQ;
ide->regs.ide_status &= ~IDE_STATUS_BSY;
if (IDE_LOG > 1)
write_log (_T("IDE INT %02X -> %02X\n"), os, ide->regs.ide_status);
ide->intdrq = false;
ide->irq_delay = 0;
if (ide->regs.ide_devcon & 2)
return false;
ide->irq_new = true;
ide->irq = 1;
return true;
}
bool ide_drq_check(struct ide_hdf *idep)
{
for (int i = 0; idep && i < 2; i++) {
struct ide_hdf *ide = i == 0 ? idep : idep->pair;
if (ide) {
if (ide->regs.ide_status & IDE_STATUS_DRQ)
return true;
}
}
return false;
}
bool ide_irq_check(struct ide_hdf *idep, bool edge_triggered)
{
for (int i = 0; idep && i < 2; i++) {
struct ide_hdf *ide = i == 0 ? idep : idep->pair;
if (ide->irq) {
if (edge_triggered) {
if (ide->irq_new) {
ide->irq_new = false;
return true;
}
continue;
}
return true;
}
}
return false;
}
bool ide_interrupt_hsync(struct ide_hdf *idep)
{
bool irq = false;
for (int i = 0; idep && i < 2; i++) {
struct ide_hdf *ide = i == 0 ? idep : idep->pair;
if (ide) {
if (ide->irq_delay > 0) {
ide->irq_delay--;
if (ide->irq_delay == 0) {
ide_interrupt_do (ide);
}
}
if (ide->irq && !(ide->regs.ide_devcon & 2))
irq = true;
}
}
return irq;
}
static void ide_fail_err (struct ide_hdf *ide, uae_u8 err)
{
ide->regs.ide_error |= err;
if (ide->ide_drv == 1 && !ide_isdrive (ide->pair)) {
ide->pair->regs.ide_status |= IDE_STATUS_ERR;
}
ide->regs.ide_status |= IDE_STATUS_ERR;
ide_interrupt (ide);
}
static void ide_fail (struct ide_hdf *ide)
{
ide_fail_err (ide, IDE_ERR_ABRT);
}
static void ide_data_ready (struct ide_hdf *ide)
{
memset (ide->secbuf, 0, ide->blocksize);
ide->data_offset = 0;
ide->data_size = ide->blocksize;
ide->buffer_offset = 0;
ide->data_multi = 1;
ide->intdrq = true;
ide_interrupt (ide);
}
static void ide_recalibrate (struct ide_hdf *ide)
{
write_log (_T("IDE%d recalibrate\n"), ide->num);
ide->regs.ide_sector = 0;
ide->regs.ide_lcyl = ide->regs.ide_hcyl = 0;
ide_interrupt (ide);
}
static void ide_identity_buffer(struct ide_hdf *ide)
{
TCHAR tmp[100];
bool atapi = ide->atapi;
int device_type = ide->atapi_device_type;
bool cf = ide->media_type > 0;
bool real = false;
int v;
memset(ide->secbuf, 0, 512);
if (!device_type)
device_type = 5; // CD
if (ata_get_identity(ide->hdhfd.hfd.geometry, ide->secbuf, true)) {
if (ini_getval(ide->hdhfd.hfd.geometry, _T("IDENTITY"), _T("atapi"), &v)) {
ide->atapi = v != 0;
if (ide->atapi) {
ide->atapi_device_type = 0;
ini_getval(ide->hdhfd.hfd.geometry, _T("IDENTITY"), _T("atapi_type"), &ide->atapi_device_type);
if (!ide->atapi_device_type)
ide->atapi_device_type = 5;
}
}
if (!ide->byteswap) {
ata_byteswapidentity(ide->secbuf);
}
} else if (ide->hdhfd.hfd.ci.loadidentity && (ide->hdhfd.hfd.identity[0] || ide->hdhfd.hfd.identity[1])) {
memcpy(ide->secbuf, ide->hdhfd.hfd.identity, 512);
if (!ide->byteswap) {
ata_byteswapidentity(ide->secbuf);
}
real = true;
} else {
pw(ide, 0, atapi ? 0x80c0 | (device_type << 8) : (cf ? 0x848a : (1 << 6)));
pw(ide, 1, ide->hdhfd.cyls_def);
pw(ide, 2, 0xc837);
pw(ide, 3, ide->hdhfd.heads_def);
pw(ide, 4, ide->blocksize * ide->hdhfd.secspertrack_def);
pw(ide, 5, ide->blocksize);
pw(ide, 6, ide->hdhfd.secspertrack_def);
ps(ide, 10, _T("68000"), 20); /* serial */
pw(ide, 20, 3);
pw(ide, 21, ide->blocksize);
pw(ide, 22, 4);
ps(ide, 23, _T("0.7"), 8); /* firmware revision */
if (ide->atapi)
_tcscpy (tmp, _T("UAE-ATAPI"));
else
_stprintf (tmp, _T("UAE-IDE %s"), ide->hdhfd.hfd.product_id);
ps(ide, 27, tmp, 40); /* model */
pw(ide, 47, ide->max_multiple_mode ? (0x8000 | (ide->max_multiple_mode >> (ide->blocksize / 512 - 1))) : 0); /* max sectors in multiple mode */
pw(ide, 48, 1);
pw(ide, 49, (ide->lba ? (1 << 9) : 0) | (1 << 8)); /* LBA and DMA supported */
pw(ide, 51, 0x200); /* PIO cycles */
pw(ide, 52, 0x200); /* DMA cycles */
pw(ide, 53, 1 | (ide->lba ? 2 | 4 : 0)); // b0 = 54-58 valid b1 = 64-70 valid b2 = 88 valid
pw(ide, 54, ide->hdhfd.cyls);
pw(ide, 55, ide->hdhfd.heads);
pw(ide, 56, ide->hdhfd.secspertrack);
uae_u64 totalsecs = (uae_u64)ide->hdhfd.cyls * ide->hdhfd.heads * ide->hdhfd.secspertrack;
pl(ide, 57, totalsecs);
pw(ide, 59, ide->max_multiple_mode ? (0x100 | ide->max_multiple_mode >> (ide->blocksize / 512 - 1)) : 0); /* Multiple mode supported */
pw(ide, 62, 0x0f);
pw(ide, 63, 0x0f);
if (ide->lba) {
totalsecs = ide->blocksize ? ide->hdhfd.size / ide->blocksize : 0;
if (totalsecs > 0x0fffffff)
totalsecs = 0x0fffffff;
pl(ide, 60, totalsecs);
if (ide->ata_level > 0) {
pw(ide, 64, ide->ata_level ? 0x03 : 0x00); /* PIO3 and PIO4 */
pw(ide, 65, 120); /* MDMA2 supported */
pw(ide, 66, 120);
pw(ide, 67, 120);
pw(ide, 68, 120);
pw(ide, 80, (1 << 1) | (1 << 2) | (1 << 3) | (1 << 4) | (1 << 5) | (1 << 6)); /* ATA-1 to ATA-6 */
pw(ide, 81, 0x1c); /* ATA revision */
pw(ide, 82, (1 << 14) | (atapi ? 0x10 | 4 : 0)); /* NOP, ATAPI: PACKET and Removable media features supported */
pw(ide, 83, (1 << 14) | (1 << 13) | (1 << 12) | (ide->lba48 ? (1 << 10) : 0)); /* cache flushes, LBA 48 supported */
pw(ide, 84, 1 << 14);
pw(ide, 85, 1 << 14);
pw(ide, 86, (1 << 14) | (1 << 13) | (1 << 12) | (ide->lba48 ? (1 << 10) : 0)); /* cache flushes, LBA 48 enabled */
pw(ide, 87, 1 << 14);
pw(ide, 88, (1 << 5) | (1 << 4) | (1 << 3) | (1 << 2) | (1 << 1) | (1 << 0)); /* UDMA modes */
pw(ide, 93, (1 << 14) | (1 << 13) | (1 << 0));
if (ide->lba48) {
totalsecs = ide->hdhfd.size / ide->blocksize;
pq(ide, 100, totalsecs);
}
}
}
ata_get_identity(ide->hdhfd.hfd.geometry, ide->secbuf, false);
}
if (!real) {
v = ide->multiple_mode;
pwor(ide, 59, v > 0 ? 0x100 : 0);
}
if (!atapi && cf) {
pw(ide, 0, 0x848a);
} else if (!atapi && !cf) {
pwand(ide, 0, 0x8000);
}
}
static void ide_identify_drive (struct ide_hdf *ide)
{
if (!ide_isdrive (ide) || ide->ata_level < 0) {
ide_fail (ide);
return;
}
if (IDE_LOG > 0)
write_log (_T("IDE%d identify drive\n"), ide->num);
ide_data_ready (ide);
ide->direction = 0;
ide_identity_buffer(ide);
if (ide->adide) {
for (int i = 0; i < 256; i++) {
uae_u16 w = (ide->secbuf[i * 2 + 0] << 8) | (ide->secbuf[i * 2 + 1] << 0);
uae_u16 we = adide_decode_word(w);
ide->secbuf[i * 2 + 0] = we >> 8;
ide->secbuf[i * 2 + 1] = we >> 0;
}
}
}
static void set_signature (struct ide_hdf *ide, bool hard)
{
if (ide->atapi) {
ide->regs.ide_sector = 1;
ide->regs.ide_nsector = 1;
if (hard && ATAPIWEIRD) {
ide->regs.ide_lcyl = 0;
ide->regs.ide_hcyl = 0;
} else {
ide->regs.ide_lcyl = 0x14;
ide->regs.ide_hcyl = 0xeb;
}
ide->regs.ide_status = 0;
ide->atapi_drdy = false;
} else {
ide->regs.ide_nsector = 1;
ide->regs.ide_sector = 1;
ide->regs.ide_lcyl = 0;
ide->regs.ide_hcyl = 0;
ide->regs.ide_status = 0;
}
ide->regs.ide_error = 0x01; // device ok
ide->packet_state = 0;
}
static void reset_device (struct ide_hdf *ide, bool both, bool hard)
{
set_signature (ide, hard);
if (both)
set_signature (ide->pair, hard);
}
void ide_reset_device(struct ide_hdf *ide)
{
reset_device(ide, true, false);
}
static void ide_execute_drive_diagnostics (struct ide_hdf *ide, bool irq)
{
reset_device (ide, irq, false);
if (irq)
ide_interrupt (ide);
else
ide->regs.ide_status &= ~IDE_STATUS_BSY;
}
static void ide_initialize_drive_parameters (struct ide_hdf *ide)
{
if (ide->hdhfd.size) {
ide->hdhfd.secspertrack = ide->regs.ide_nsector == 0 ? 256 : ide->regs.ide_nsector;
ide->hdhfd.heads = (ide->regs.ide_select & 15) + 1;
if (ide->hdhfd.hfd.ci.pcyls)
ide->hdhfd.cyls = ide->hdhfd.hfd.ci.pcyls;
else
ide->hdhfd.cyls = (ide->hdhfd.size / ide->blocksize) / ((uae_u64)ide->hdhfd.secspertrack * ide->hdhfd.heads);
if (ide->hdhfd.heads * ide->hdhfd.cyls * ide->hdhfd.secspertrack > 16515072 || ide->lba48) {
if (ide->hdhfd.hfd.ci.pcyls)
ide->hdhfd.cyls = ide->hdhfd.hfd.ci.pcyls;
else
ide->hdhfd.cyls = ide->hdhfd.cyls_def;
ide->hdhfd.heads = ide->hdhfd.heads_def;
ide->hdhfd.secspertrack = ide->hdhfd.secspertrack_def;
}
} else {
ide->regs.ide_error |= IDE_ERR_ABRT;
ide->regs.ide_status |= IDE_STATUS_ERR;
}
write_log (_T("IDE%d initialize drive parameters, CYL=%d,SPT=%d,HEAD=%d\n"),
ide->num, ide->hdhfd.cyls, ide->hdhfd.secspertrack, ide->hdhfd.heads);
ide_interrupt (ide);
}
static void ide_set_multiple_mode (struct ide_hdf *ide)
{
if (ide->ata_level < 0) {
ide_fail(ide);
return;
}
write_log (_T("IDE%d drive multiple mode = %d\n"), ide->num, ide->regs.ide_nsector);
if (ide->regs.ide_nsector > (ide->max_multiple_mode >> (ide->blocksize / 512 - 1))) {
ide_fail(ide);
} else {
ide->multiple_mode = ide->regs.ide_nsector;
}
ide_interrupt(ide);
}
static void ide_set_features (struct ide_hdf *ide)
{
if (ide->ata_level < 0) {
ide_fail(ide);
return;
}
int type = ide->regs.ide_nsector >> 3;
int mode = ide->regs.ide_nsector & 7;
write_log (_T("IDE%d set features %02X (%02X)\n"), ide->num, ide->regs.ide_feat, ide->regs.ide_nsector);
switch (ide->regs.ide_feat)
{
// 8-bit mode
case 1:
ide->mode_8bit = true;
ide_interrupt(ide);
break;
case 0x81:
ide->mode_8bit = false;
ide_interrupt(ide);
break;
// write cache
case 2:
case 0x82:
ide_interrupt(ide);
break;
default:
ide_fail (ide);
break;
}
}
static void get_lbachs (struct ide_hdf *ide, uae_u64 *lbap, unsigned int *cyl, unsigned int *head, unsigned int *sec)
{
if (ide->lba48 && ide->lba48cmd && (ide->regs.ide_select & 0x40)) {
uae_u64 lba;
lba = (ide->regs.ide_hcyl << 16) | (ide->regs.ide_lcyl << 8) | ide->regs.ide_sector;
lba |= ((uae_u64)(((ide->regs.ide_hcyl2 << 16) | (ide->regs.ide_lcyl2 << 8) | ide->regs.ide_sector2))) << 24;
*lbap = lba;
} else {
if ((ide->regs.ide_select & 0x40) && ide->lba) {
*lbap = ((ide->regs.ide_select & 15) << 24) | (ide->regs.ide_hcyl << 16) | (ide->regs.ide_lcyl << 8) | ide->regs.ide_sector;
} else {
*cyl = (ide->regs.ide_hcyl << 8) | ide->regs.ide_lcyl;
*head = ide->regs.ide_select & 15;
*sec = ide->regs.ide_sector;
*lbap = (((uae_u64)(*cyl) * ide->hdhfd.heads + (*head)) * ide->hdhfd.secspertrack) + (*sec) - 1;
}
}
}
static int get_nsec (struct ide_hdf *ide)
{
if (ide->lba48 && ide->lba48cmd)
return (ide->regs.ide_nsector == 0 && ide->regs.ide_nsector2 == 0) ? 65536 : (ide->regs.ide_nsector2 * 256 + ide->regs.ide_nsector);
else
return ide->regs.ide_nsector == 0 ? 256 : ide->regs.ide_nsector;
}
static int dec_nsec (struct ide_hdf *ide, int v)
{
if (ide->lba48 && ide->lba48cmd) {
uae_u16 nsec;
nsec = (ide->regs.ide_nsector2 << 8) | ide->regs.ide_nsector;
nsec -= v;
ide->regs.ide_nsector2 = nsec >> 8;
ide->regs.ide_nsector = nsec & 0xff;
return (ide->regs.ide_nsector2 << 8) | ide->regs.ide_nsector;
} else {
ide->regs.ide_nsector -= v;
return ide->regs.ide_nsector;
}
}
static void put_lbachs (struct ide_hdf *ide, uae_u64 lba, unsigned int cyl, unsigned int head, unsigned int sec, unsigned int inc)
{
if (ide->lba48 && ide->lba48cmd) {
lba += inc;
ide->regs.ide_hcyl = (lba >> 16) & 0xff;
ide->regs.ide_lcyl = (lba >> 8) & 0xff;
ide->regs.ide_sector = lba & 0xff;
lba >>= 24;
ide->regs.ide_hcyl2 = (lba >> 16) & 0xff;
ide->regs.ide_lcyl2 = (lba >> 8) & 0xff;
ide->regs.ide_sector2 = lba & 0xff;
} else {
if ((ide->regs.ide_select & 0x40) && ide->lba) {
lba += inc;
ide->regs.ide_select &= ~15;
ide->regs.ide_select |= (lba >> 24) & 15;
ide->regs.ide_hcyl = (lba >> 16) & 0xff;
ide->regs.ide_lcyl = (lba >> 8) & 0xff;
ide->regs.ide_sector = lba & 0xff;
} else {
sec += inc;
while (sec >= ide->hdhfd.secspertrack) {
sec -= ide->hdhfd.secspertrack;
head++;
if (head >= ide->hdhfd.heads) {
head -= ide->hdhfd.heads;
cyl++;
}
}
ide->regs.ide_select &= ~15;
ide->regs.ide_select |= head;
ide->regs.ide_sector = sec;
ide->regs.ide_hcyl = cyl >> 8;
ide->regs.ide_lcyl = (uae_u8)cyl;
}
}
}
static void check_maxtransfer (struct ide_hdf *ide, int state)
{
if (state == 1) {
// transfer was started
if (ide->maxtransferstate < 2 && ide->regs.ide_nsector == 0) {
ide->maxtransferstate = 1;
} else if (ide->maxtransferstate == 2) {
// second transfer was started (part of split)
write_log (_T("IDE maxtransfer check detected split >256 block transfer\n"));
ide->maxtransferstate = 0;
} else {
ide->maxtransferstate = 0;
}
} else if (state == 2) {
// address was read
if (ide->maxtransferstate == 1)
ide->maxtransferstate++;
else
ide->maxtransferstate = 0;
}
}
static void setdrq (struct ide_hdf *ide)
{
ide->regs.ide_status |= IDE_STATUS_DRQ;
ide->regs.ide_status &= ~IDE_STATUS_BSY;
}
static void setbsy (struct ide_hdf *ide)
{
ide->regs.ide_status |= IDE_STATUS_BSY;
ide->regs.ide_status &= ~IDE_STATUS_DRQ;
}
static void process_rw_command (struct ide_hdf *ide)
{
setbsy (ide);
write_comm_pipe_u32 (&ide->its->requests, ide->num, 1);
}
static void process_packet_command (struct ide_hdf *ide)
{
setbsy (ide);
write_comm_pipe_u32 (&ide->its->requests, ide->num | 0x8000, 1);
}
static void atapi_data_done (struct ide_hdf *ide)
{
ide->regs.ide_nsector = ATAPI_IO | ATAPI_CD;
ide->regs.ide_status = IDE_STATUS_DRDY;
ide->data_size = 0;
ide->packet_data_offset = 0;
ide->data_offset = 0;
}
static bool atapi_set_size (struct ide_hdf *ide)
{
int size;
size = ide->data_size;
ide->data_offset = 0;
if (!size) {
ide->packet_state = 0;
ide->packet_transfer_size = 0;
return false;
}
if (ide->packet_state == 2) {
if (size > ide->packet_data_size)
size = ide->packet_data_size;
if (size > ATAPI_MAX_TRANSFER)
size = ATAPI_MAX_TRANSFER;
ide->packet_transfer_size = size & ~1;
ide->regs.ide_lcyl = size & 0xff;
ide->regs.ide_hcyl = size >> 8;
} else {
ide->packet_transfer_size = 12;
}
if (IDE_LOG > 1)
write_log (_T("ATAPI data transfer %d/%d bytes\n"), ide->packet_transfer_size, ide->data_size);
return true;
}
static void atapi_packet (struct ide_hdf *ide)
{
ide->packet_data_offset = 0;
ide->packet_data_size = (ide->regs.ide_hcyl << 8) | ide->regs.ide_lcyl;
if (ide->packet_data_size == 65535)
ide->packet_data_size = 65534;
ide->data_size = 12;
if (IDE_LOG > 0)
write_log (_T("ATAPI packet command. Data size = %d\n"), ide->packet_data_size);
ide->packet_state = 1;
ide->data_multi = 1;
ide->data_offset = 0;
ide->regs.ide_nsector = ATAPI_CD;
ide->regs.ide_error = 0;
if (atapi_set_size (ide))
setdrq (ide);
}
static void do_packet_command (struct ide_hdf *ide)
{
memcpy (ide->scsi->cmd, ide->secbuf, 12);
ide->scsi->cmd_len = 12;
if (IDE_LOG > 0) {
uae_u8 *c = ide->scsi->cmd;
write_log (_T("ATASCSI %02x.%02x.%02x.%02x.%02x.%02x.%02x.%02x.%02x.%02x.%02x.%02x\n"),
c[0], c[1], c[2], c[3], c[4], c[5], c[6], c[7], c[8], c[9], c[10], c[11]);
}
ide->direction = 0;
scsi_emulate_analyze (ide->scsi);
if (ide->scsi->direction <= 0) {
// data in
scsi_emulate_cmd (ide->scsi);
ide->data_size = ide->scsi->data_len;
ide->regs.ide_status = 0;
if (ide->scsi->status) {
// error
ide->regs.ide_error = (ide->scsi->sense[2] << 4) | 4; // ABRT
atapi_data_done (ide);
ide->regs.ide_status |= ATAPI_STATUS_CHK;
atapi_set_size (ide);
return;
} else if (ide->scsi->data_len) {
// data in
ide_grow_buffer(ide, ide->scsi->data_len);
memcpy (ide->secbuf, ide->scsi->buffer, ide->scsi->data_len);
ide->regs.ide_nsector = ATAPI_IO;
} else {
// no data
atapi_data_done (ide);
}
} else {
// data out
ide->direction = 1;
ide->regs.ide_nsector = 0;
ide->data_size = ide->scsi->data_len;
}
ide->packet_state = 2; // data phase
if (atapi_set_size (ide))
ide->intdrq = true;
}
static void do_process_packet_command (struct ide_hdf *ide)
{
if (ide->packet_state == 1) {
do_packet_command (ide);
} else {
ide->packet_data_offset += ide->packet_transfer_size;
if (!ide->direction) {
// data still remaining, next transfer
if (atapi_set_size (ide))
ide->intdrq = true;
} else {
if (atapi_set_size (ide)) {
ide->intdrq = true;
} else {
if (IDE_LOG > 1)
write_log(_T("IDE%d ATAPI write finished, %d bytes\n"), ide->num, ide->data_size);
memcpy (&ide->scsi->buffer, ide->secbuf, ide->data_size);
ide->scsi->data_len = ide->data_size;
scsi_emulate_cmd (ide->scsi);
}
}
}
ide_fast_interrupt (ide);
}
static const TCHAR *getidemode(struct ide_hdf *ide)
{
return ide->lba48 ? (ide->lba48cmd ? _T("lba48") : _T("lba48*")) : ((ide->regs.ide_select & 0x40) ? _T("lba") : _T("chs"));
}
static void do_process_rw_command (struct ide_hdf *ide)
{
unsigned int cyl, head, sec, nsec, nsec_total;
uae_u64 lba;
bool last = true;
ide->data_offset = 0;
if (ide->direction > 1) {
// FORMAT TRACK?
// Don't write anything
goto end;
}
nsec = get_nsec (ide);
get_lbachs (ide, &lba, &cyl, &head, &sec);
if (IDE_LOG > 1)
write_log(_T("IDE%d off=%d, nsec=%d (%d) %s\n"), ide->num, (uae_u32)lba, nsec, ide->multiple_mode, getidemode(ide));
if (nsec > ide->max_lba - lba) {
nsec = ide->max_lba - lba;
if (IDE_LOG > 1)
write_log (_T("IDE%d nsec changed to %d\n"), ide->num, nsec);
}
if (nsec <= 0) {
ide_data_ready (ide);
ide_fail_err (ide, IDE_ERR_IDNF);
return;