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Bochs/bochs/iodev/harddrv.cc

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/////////////////////////////////////////////////////////////////////////
// $Id: harddrv.cc,v 1.111 2003-09-22 23:32:23 cbothamy Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2002 MandrakeSoft S.A.
//
// MandrakeSoft S.A.
// 43, rue d'Aboukir
// 75002 Paris - France
// http://www.linux-mandrake.com/
// http://www.mandrakesoft.com/
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
// Useful docs:
// AT Attachment with Packet Interface
// working draft by T13 at www.t13.org
// Define BX_PLUGGABLE in files that can be compiled into plugins. For
// platforms that require a special tag on exported symbols, BX_PLUGGABLE
// is used to know when we are exporting symbols and when we are importing.
#define BX_PLUGGABLE
#include "bochs.h"
#if BX_HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif
#define LOG_THIS theHardDrive->
// WARNING: dangerous options!
// These options provoke certain kinds of errors for testing purposes when they
// are set to a nonzero value. DO NOT ENABLE THEM when using any disk image
// you care about.
#define TEST_READ_BEYOND_END 0
#define TEST_WRITE_BEYOND_END 0
#ifdef __GNUC__
# if TEST_READ_BEYOND_END || TEST_WRITE_BEYOND_END
# warning BEWARE: Dangerous options are enabled in harddrv.cc. If you are not trying to provoke hard drive errors you should disable them right now.
# endif
#endif
// end of dangerous options.
#define INDEX_PULSE_CYCLE 10
#define PACKET_SIZE 12
static unsigned max_multiple_sectors = 0; // was 0x3f
static unsigned curr_multiple_sectors = 0; // was 0x3f
// some packet handling macros
#define EXTRACT_FIELD(arr,byte,start,num_bits) (((arr)[(byte)] >> (start)) & ((1 << (num_bits)) - 1))
#define get_packet_field(c,b,s,n) (EXTRACT_FIELD((BX_SELECTED_CONTROLLER((c)).buffer),(b),(s),(n)))
#define get_packet_byte(c,b) (BX_SELECTED_CONTROLLER((c)).buffer[(b)])
#define get_packet_word(c,b) (((uint16)BX_SELECTED_CONTROLLER((c)).buffer[(b)] << 8) | BX_SELECTED_CONTROLLER((c)).buffer[(b)+1])
#define BX_CONTROLLER(c,a) (BX_HD_THIS channels[(c)].drives[(a)]).controller
#define BX_DRIVE(c,a) (BX_HD_THIS channels[(c)].drives[(a)])
#define BX_DRIVE_IS_PRESENT(c,a) (BX_HD_THIS channels[(c)].drives[(a)].device_type != IDE_NONE)
#define BX_DRIVE_IS_HD(c,a) (BX_HD_THIS channels[(c)].drives[(a)].device_type == IDE_DISK)
#define BX_DRIVE_IS_CD(c,a) (BX_HD_THIS channels[(c)].drives[(a)].device_type == IDE_CDROM)
#define BX_MASTER_IS_PRESENT(c) BX_DRIVE_IS_PRESENT((c),0)
#define BX_SLAVE_IS_PRESENT(c) BX_DRIVE_IS_PRESENT((c),1)
#define BX_ANY_IS_PRESENT(c) (BX_DRIVE_IS_PRESENT((c),0) || BX_DRIVE_IS_PRESENT((c),1))
#define BX_SELECTED_CONTROLLER(c) (BX_CONTROLLER((c),BX_HD_THIS channels[(c)].drive_select))
#define BX_SELECTED_DRIVE(c) (BX_DRIVE((c),BX_HD_THIS channels[(c)].drive_select))
#define BX_MASTER_SELECTED(c) (!BX_HD_THIS channels[(c)].drive_select)
#define BX_SLAVE_SELECTED(c) (BX_HD_THIS channels[(c)].drive_select)
#define BX_SELECTED_IS_PRESENT(c) (BX_DRIVE_IS_PRESENT((c),BX_SLAVE_SELECTED((c))))
#define BX_SELECTED_IS_HD(c) (BX_DRIVE_IS_HD((c),BX_SLAVE_SELECTED((c))))
#define BX_SELECTED_IS_CD(c) (BX_DRIVE_IS_CD((c),BX_SLAVE_SELECTED((c))))
#define BX_SELECTED_MODEL(c) (BX_HD_THIS channels[(c)].drives[BX_HD_THIS channels[(c)].drive_select].model_no)
#define BX_SELECTED_TYPE_STRING(channel) ((BX_SELECTED_IS_CD(channel)) ? "CD-ROM" : "DISK")
#define WRITE_FEATURES(c,a) do { uint8 _a = a; BX_CONTROLLER((c),0).features = _a; BX_CONTROLLER((c),1).features = _a; } while(0)
#define WRITE_SECTOR_COUNT(c,a) do { uint8 _a = a; BX_CONTROLLER((c),0).sector_count = _a; BX_CONTROLLER((c),1).sector_count = _a; } while(0)
#define WRITE_SECTOR_NUMBER(c,a) do { uint8 _a = a; BX_CONTROLLER((c),0).sector_no = _a; BX_CONTROLLER((c),1).sector_no = _a; } while(0)
#define WRITE_CYLINDER_LOW(c,a) do { uint8 _a = a; BX_CONTROLLER((c),0).cylinder_no = (BX_CONTROLLER((c),0).cylinder_no & 0xff00) | _a; BX_CONTROLLER((c),1).cylinder_no = (BX_CONTROLLER((c),1).cylinder_no & 0xff00) | _a; } while(0)
#define WRITE_CYLINDER_HIGH(c,a) do { uint16 _a = a; BX_CONTROLLER((c),0).cylinder_no = (_a << 8) | (BX_CONTROLLER((c),0).cylinder_no & 0xff); BX_CONTROLLER((c),1).cylinder_no = (_a << 8) | (BX_CONTROLLER((c),1).cylinder_no & 0xff); } while(0)
#define WRITE_HEAD_NO(c,a) do { uint8 _a = a; BX_CONTROLLER((c),0).head_no = _a; BX_CONTROLLER((c),1).head_no = _a; } while(0)
#define WRITE_LBA_MODE(c,a) do { uint8 _a = a; BX_CONTROLLER((c),0).lba_mode = _a; BX_CONTROLLER((c),1).lba_mode = _a; } while(0)
bx_hard_drive_c *theHardDrive = NULL;
int
libharddrv_LTX_plugin_init(plugin_t *plugin, plugintype_t type, int argc, char *argv[])
{
theHardDrive = new bx_hard_drive_c ();
bx_devices.pluginHardDrive = theHardDrive;
BX_REGISTER_DEVICE_DEVMODEL(plugin, type, theHardDrive, BX_PLUGIN_HARDDRV);
return(0); // Success
}
void
libharddrv_LTX_plugin_fini(void)
{
}
bx_hard_drive_c::bx_hard_drive_c(void)
{
#if DLL_HD_SUPPORT
# error code must be fixed to use DLL_HD_SUPPORT and 4 ata channels
#endif
for (Bit8u channel=0; channel<BX_MAX_ATA_CHANNEL; channel++) {
channels[channel].drives[0].hard_drive = NULL;
channels[channel].drives[1].hard_drive = NULL;
put("HD");
settype(HDLOG);
}
}
bx_hard_drive_c::~bx_hard_drive_c(void)
{
BX_DEBUG(("Exit."));
for (Bit8u channel=0; channel<BX_MAX_ATA_CHANNEL; channel++) {
if (channels[channel].drives[0].hard_drive != NULL ) /* DT 17.12.2001 21:55 */
{
delete channels[channel].drives[0].hard_drive;
channels[channel].drives[0].hard_drive = NULL;
}
if ( channels[channel].drives[1].hard_drive != NULL )
{
delete channels[channel].drives[1].hard_drive;
channels[channel].drives[1].hard_drive = NULL; /* DT 17.12.2001 21:56 */
}
}
}
void
bx_hard_drive_c::init(void)
{
Bit8u channel;
char string[5];
BX_DEBUG(("Init $Id: harddrv.cc,v 1.111 2003-09-22 23:32:23 cbothamy Exp $"));
for (channel=0; channel<BX_MAX_ATA_CHANNEL; channel++) {
if (bx_options.ata[channel].Opresent->get() == 1) {
BX_HD_THIS channels[channel].ioaddr1 = bx_options.ata[channel].Oioaddr1->get();
BX_HD_THIS channels[channel].ioaddr2 = bx_options.ata[channel].Oioaddr2->get();
BX_HD_THIS channels[channel].irq = bx_options.ata[channel].Oirq->get();
// Coherency check
if ( (BX_HD_THIS channels[channel].ioaddr1 == 0) ||
(BX_HD_THIS channels[channel].ioaddr2 == 0) ||
(BX_HD_THIS channels[channel].irq == 0) ) {
BX_PANIC(("incoherency for ata channel %d: io1=0x%x, io2=%x, irq=%d",
channel,
BX_HD_THIS channels[channel].ioaddr1,
BX_HD_THIS channels[channel].ioaddr2,
BX_HD_THIS channels[channel].irq));
}
}
else {
BX_HD_THIS channels[channel].ioaddr1 = 0;
BX_HD_THIS channels[channel].ioaddr2 = 0;
BX_HD_THIS channels[channel].irq = 0;
}
}
for (channel=0; channel<BX_MAX_ATA_CHANNEL; channel++) {
sprintf(string ,"ATA%d", channel);
if (BX_HD_THIS channels[channel].irq != 0)
DEV_register_irq(BX_HD_THIS channels[channel].irq, strdup(string));
if (BX_HD_THIS channels[channel].ioaddr1 != 0) {
DEV_register_ioread_handler(this, read_handler,
BX_HD_THIS channels[channel].ioaddr1, strdup(string), 6);
DEV_register_iowrite_handler(this, write_handler,
BX_HD_THIS channels[channel].ioaddr1, strdup(string), 6);
for (unsigned addr=0x1; addr<=0x7; addr++) {
DEV_register_ioread_handler(this, read_handler,
BX_HD_THIS channels[channel].ioaddr1+addr, strdup(string), 1);
DEV_register_iowrite_handler(this, write_handler,
BX_HD_THIS channels[channel].ioaddr1+addr, strdup(string), 1);
}
}
// We don't want to register addresses 0x3f6 and 0x3f7 as they are handled by the floppy controller
if ((BX_HD_THIS channels[channel].ioaddr2 != 0) && (BX_HD_THIS channels[channel].ioaddr2 != 0x3f0)) {
for (unsigned addr=0x6; addr<=0x7; addr++) {
DEV_register_ioread_handler(this, read_handler,
BX_HD_THIS channels[channel].ioaddr2+addr, strdup(string), 1);
DEV_register_iowrite_handler(this, write_handler,
BX_HD_THIS channels[channel].ioaddr2+addr, strdup(string), 1);
}
}
BX_HD_THIS channels[channel].drive_select = 0;
}
channel = 0;
for (channel=0; channel<BX_MAX_ATA_CHANNEL; channel++) {
for (Bit8u device=0; device<2; device ++) {
// If not present
BX_HD_THIS channels[channel].drives[device].device_type = IDE_NONE;
if (!bx_options.atadevice[channel][device].Opresent->get()) {
continue;
}
// Make model string
strncpy((char*)BX_HD_THIS channels[channel].drives[device].model_no,
bx_options.atadevice[channel][device].Omodel->getptr(), 40);
while (strlen((char *)BX_HD_THIS channels[channel].drives[device].model_no) < 40) {
strcat ((char*)BX_HD_THIS channels[channel].drives[device].model_no, " ");
}
if (bx_options.atadevice[channel][device].Otype->get() == BX_ATA_DEVICE_DISK) {
BX_DEBUG(( "Hard-Disk on target %d/%d",channel,device));
BX_HD_THIS channels[channel].drives[device].device_type = IDE_DISK;
int cyl = bx_options.atadevice[channel][device].Ocylinders->get ();
int heads = bx_options.atadevice[channel][device].Oheads->get ();
int spt = bx_options.atadevice[channel][device].Ospt->get ();
Bit64u disk_size = (Bit64u)cyl * heads * spt * 512;
/* instantiate the right class */
switch (bx_options.atadevice[channel][device].Omode->get()) {
case BX_ATA_MODE_FLAT:
BX_INFO(("HD on ata%d-%d: '%s' 'flat' mode ", channel, device,
bx_options.atadevice[channel][device].Opath->getptr ()));
channels[channel].drives[device].hard_drive = new default_image_t();
break;
case BX_ATA_MODE_CONCAT:
BX_INFO(("HD on ata%d-%d: '%s' 'concat' mode ", channel, device,
bx_options.atadevice[channel][device].Opath->getptr ()));
channels[channel].drives[device].hard_drive = new concat_image_t();
break;
#if EXTERNAL_DISK_SIMULATOR
case BX_ATA_MODE_EXTDISKSIM:
BX_INFO(("HD on ata%d-%d: '%s' 'External Simulator' mode ", channel, device,
bx_options.atadevice[channel][device].Opath->getptr ()));
channels[channel].drives[device].hard_drive = new EXTERNAL_DISK_SIMULATOR_CLASS();
break;
#endif //EXTERNAL_DISK_SIMULATOR
#if DLL_HD_SUPPORT
case BX_ATA_MODE_DLL_HD:
BX_INFO(("HD on ata%d-%d: '%s' 'dll' mode ", channel, device,
bx_options.atadevice[channel][device].Opath->getptr ()));
channels[channel].drives[device].hard_drive = new dll_image_t();
break;
#endif //DLL_HD_SUPPORT
case BX_ATA_MODE_SPARSE:
BX_INFO(("HD on ata%d-%d: '%s' 'sparse' mode ", channel, device,
bx_options.atadevice[channel][device].Opath->getptr ()));
channels[channel].drives[device].hard_drive = new sparse_image_t();
break;
case BX_ATA_MODE_VMWARE3:
BX_INFO(("HD on ata%d-%d: '%s' 'vmware3' mode ", channel, device,
bx_options.atadevice[channel][device].Opath->getptr ()));
channels[channel].drives[device].hard_drive = new vmware3_image_t();
break;
#if 0
case BX_ATA_MODE_SPLIT:
BX_INFO(("HD on ata%d-%d: '%s' 'split' mode ", channel, device,
bx_options.atadevice[channel][device].Opath->getptr ()));
channels[channel].drives[device].hard_drive = new split_image_t();
break;
#endif
case BX_ATA_MODE_UNDOABLE:
BX_INFO(("HD on ata%d-%d: '%s' 'undoable' mode ", channel, device,
bx_options.atadevice[channel][device].Opath->getptr ()));
channels[channel].drives[device].hard_drive = new undoable_image_t(disk_size,
bx_options.atadevice[channel][device].Ojournal->getptr());
break;
case BX_ATA_MODE_GROWING:
BX_INFO(("HD on ata%d-%d: '%s' 'growing' mode ", channel, device,
bx_options.atadevice[channel][device].Opath->getptr ()));
channels[channel].drives[device].hard_drive = new growing_image_t(disk_size);
break;
case BX_ATA_MODE_VOLATILE:
BX_INFO(("HD on ata%d-%d: '%s' 'volatile' mode ", channel, device,
bx_options.atadevice[channel][device].Opath->getptr ()));
channels[channel].drives[device].hard_drive = new volatile_image_t(disk_size,
bx_options.atadevice[channel][device].Ojournal->getptr());
break;
#if BX_COMPRESSED_HD_SUPPORT
case BX_ATA_MODE_Z_UNDOABLE:
BX_INFO(("HD on ata%d-%d: '%s' 'z-undoable' mode ", channel, device,
bx_options.atadevice[channel][device].Opath->getptr ()));
channels[channel].drives[device].hard_drive = new z_undoable_image_t(disk_size,
bx_options.atadevice[channel][device].Ojournal->getptr());
break;
case BX_ATA_MODE_Z_VOLATILE:
BX_INFO(("HD on ata%d-%d: '%s' 'z-volatile' mode ", channel, device,
bx_options.atadevice[channel][device].Opath->getptr ()));
channels[channel].drives[device].hard_drive = new z_volatile_image_t(disk_size,
bx_options.atadevice[channel][device].Ojournal->getptr());
break;
#endif //BX_COMPRESSED_HD_SUPPORT
default:
BX_PANIC(("HD on ata%d-%d: '%s' unsupported HD mode : %s", channel, device,
bx_options.atadevice[channel][device].Opath->getptr (),
atadevice_mode_names[bx_options.atadevice[channel][device].Omode->get()]));
break;
}
BX_HD_THIS channels[channel].drives[device].hard_drive->cylinders = cyl;
BX_HD_THIS channels[channel].drives[device].hard_drive->heads = heads;
BX_HD_THIS channels[channel].drives[device].hard_drive->sectors = spt;
if (cyl == 0 || heads == 0 || spt == 0) {
BX_PANIC(("ata%d/%d cannot have zero cylinders, heads, or sectors/track", channel, device));
}
/* open hard drive image file */
if ((BX_HD_THIS channels[channel].drives[device].hard_drive->open(bx_options.atadevice[channel][device].Opath->getptr ())) < 0) {
BX_PANIC(("ata%d-%d: could not open hard drive image file '%s'", channel, device, bx_options.atadevice[channel][device].Opath->getptr ()));
}
}
else if (bx_options.atadevice[channel][device].Otype->get() == BX_ATA_DEVICE_CDROM) {
BX_DEBUG(( "CDROM on target %d/%d",channel,device));
BX_HD_THIS channels[channel].drives[device].device_type = IDE_CDROM;
BX_HD_THIS channels[channel].drives[device].cdrom.locked = 0;
BX_HD_THIS channels[channel].drives[device].sense.sense_key = SENSE_NONE;
BX_HD_THIS channels[channel].drives[device].sense.asc = 0;
BX_HD_THIS channels[channel].drives[device].sense.ascq = 0;
// Check bit fields
BX_CONTROLLER(channel,device).sector_count = 0;
BX_CONTROLLER(channel,device).interrupt_reason.c_d = 1;
if (BX_CONTROLLER(channel,device).sector_count != 0x01)
BX_PANIC(("interrupt reason bit field error"));
BX_CONTROLLER(channel,device).sector_count = 0;
BX_CONTROLLER(channel,device).interrupt_reason.i_o = 1;
if (BX_CONTROLLER(channel,device).sector_count != 0x02)
BX_PANIC(("interrupt reason bit field error"));
BX_CONTROLLER(channel,device).sector_count = 0;
BX_CONTROLLER(channel,device).interrupt_reason.rel = 1;
if (BX_CONTROLLER(channel,device).sector_count != 0x04)
BX_PANIC(("interrupt reason bit field error"));
BX_CONTROLLER(channel,device).sector_count = 0;
BX_CONTROLLER(channel,device).interrupt_reason.tag = 3;
if (BX_CONTROLLER(channel,device).sector_count != 0x18)
BX_PANIC(("interrupt reason bit field error"));
BX_CONTROLLER(channel,device).sector_count = 0;
// allocate low level driver
#ifdef LOWLEVEL_CDROM
BX_HD_THIS channels[channel].drives[device].cdrom.cd = new LOWLEVEL_CDROM(bx_options.atadevice[channel][device].Opath->getptr ());
BX_INFO(("CD on ata%d-%d: '%s'",channel, device, bx_options.atadevice[channel][device].Opath->getptr ()));
if (bx_options.atadevice[channel][device].Ostatus->get () == BX_INSERTED) {
if (BX_HD_THIS channels[channel].drives[device].cdrom.cd->insert_cdrom()) {
BX_INFO(( "Media present in CD-ROM drive"));
BX_HD_THIS channels[channel].drives[device].cdrom.ready = 1;
BX_HD_THIS channels[channel].drives[device].cdrom.capacity = BX_HD_THIS channels[channel].drives[device].cdrom.cd->capacity();
} else {
BX_INFO(( "Could not locate CD-ROM, continuing with media not present"));
BX_HD_THIS channels[channel].drives[device].cdrom.ready = 0;
bx_options.atadevice[channel][device].Ostatus->set(BX_EJECTED);
}
} else {
#endif
BX_INFO(( "Media not present in CD-ROM drive" ));
BX_HD_THIS channels[channel].drives[device].cdrom.ready = 0;
#ifdef LOWLEVEL_CDROM
}
#endif
}
BX_CONTROLLER(channel,device).status.busy = 0;
BX_CONTROLLER(channel,device).status.drive_ready = 1;
BX_CONTROLLER(channel,device).status.write_fault = 0;
BX_CONTROLLER(channel,device).status.seek_complete = 1;
BX_CONTROLLER(channel,device).status.drq = 0;
BX_CONTROLLER(channel,device).status.corrected_data = 0;
BX_CONTROLLER(channel,device).status.index_pulse = 0;
BX_CONTROLLER(channel,device).status.index_pulse_count = 0;
BX_CONTROLLER(channel,device).status.err = 0;
BX_CONTROLLER(channel,device).error_register = 0x01; // diagnostic code: no error
BX_CONTROLLER(channel,device).head_no = 0;
BX_CONTROLLER(channel,device).sector_count = 1;
BX_CONTROLLER(channel,device).sector_no = 1;
BX_CONTROLLER(channel,device).cylinder_no = 0;
BX_CONTROLLER(channel,device).current_command = 0x00;
BX_CONTROLLER(channel,device).buffer_index = 0;
BX_CONTROLLER(channel,device).control.reset = 0;
BX_CONTROLLER(channel,device).control.disable_irq = 0;
BX_CONTROLLER(channel,device).reset_in_progress = 0;
BX_CONTROLLER(channel,device).sectors_per_block = 0x80;
BX_CONTROLLER(channel,device).lba_mode = 0;
BX_CONTROLLER(channel,device).features = 0;
}
}
#if BX_PDC20230C_VLBIDE_SUPPORT
BX_HD_THIS pdc20230c.prog_mode = 0;
BX_HD_THIS pdc20230c.prog_count = 0;
BX_HD_THIS pdc20230c.p1f3_value = 0;
BX_HD_THIS pdc20230c.p1f4_value = 0;
#endif
// generate CMOS values for hard drive if not using a CMOS image
if (!bx_options.cmos.OcmosImage->get ()) {
DEV_cmos_set_reg(0x12, 0x00); // start out with: no drive 0, no drive 1
if (BX_DRIVE_IS_HD(0,0)) {
// Flag drive type as Fh, use extended CMOS location as real type
DEV_cmos_set_reg(0x12, (DEV_cmos_get_reg(0x12) & 0x0f) | 0xf0);
DEV_cmos_set_reg(0x19, 47); // user definable type
// AMI BIOS: 1st hard disk #cyl low byte
DEV_cmos_set_reg(0x1b, (bx_options.atadevice[0][0].Ocylinders->get () & 0x00ff));
// AMI BIOS: 1st hard disk #cyl high byte
DEV_cmos_set_reg(0x1c, (bx_options.atadevice[0][0].Ocylinders->get () & 0xff00) >> 8);
// AMI BIOS: 1st hard disk #heads
DEV_cmos_set_reg(0x1d, (bx_options.atadevice[0][0].Oheads->get ()));
// AMI BIOS: 1st hard disk write precompensation cylinder, low byte
DEV_cmos_set_reg(0x1e, 0xff); // -1
// AMI BIOS: 1st hard disk write precompensation cylinder, high byte
DEV_cmos_set_reg(0x1f, 0xff); // -1
// AMI BIOS: 1st hard disk control byte
DEV_cmos_set_reg(0x20, (0xc0 | ((bx_options.atadevice[0][0].Oheads->get () > 8) << 3)));
// AMI BIOS: 1st hard disk landing zone, low byte
DEV_cmos_set_reg(0x21, DEV_cmos_get_reg(0x1b));
// AMI BIOS: 1st hard disk landing zone, high byte
DEV_cmos_set_reg(0x22, DEV_cmos_get_reg(0x1c));
// AMI BIOS: 1st hard disk sectors/track
DEV_cmos_set_reg(0x23, bx_options.atadevice[0][0].Ospt->get ());
}
//set up cmos for second hard drive
if (BX_DRIVE_IS_HD(0,1)) {
BX_DEBUG(("1: I will put 0xf into the second hard disk field"));
// fill in lower 4 bits of 0x12 for second HD
DEV_cmos_set_reg(0x12, (DEV_cmos_get_reg(0x12) & 0xf0) | 0x0f);
DEV_cmos_set_reg(0x1a, 47); // user definable type
// AMI BIOS: 2nd hard disk #cyl low byte
DEV_cmos_set_reg(0x24, (bx_options.atadevice[0][1].Ocylinders->get () & 0x00ff));
// AMI BIOS: 2nd hard disk #cyl high byte
DEV_cmos_set_reg(0x25, (bx_options.atadevice[0][1].Ocylinders->get () & 0xff00) >> 8);
// AMI BIOS: 2nd hard disk #heads
DEV_cmos_set_reg(0x26, (bx_options.atadevice[0][1].Oheads->get ()));
// AMI BIOS: 2nd hard disk write precompensation cylinder, low byte
DEV_cmos_set_reg(0x27, 0xff); // -1
// AMI BIOS: 2nd hard disk write precompensation cylinder, high byte
DEV_cmos_set_reg(0x28, 0xff); // -1
// AMI BIOS: 2nd hard disk, 0x80 if heads>8
DEV_cmos_set_reg(0x29, (bx_options.atadevice[0][1].Oheads->get () > 8) ? 0x80 : 0x00);
// AMI BIOS: 2nd hard disk landing zone, low byte
DEV_cmos_set_reg(0x2a, DEV_cmos_get_reg(0x24));
// AMI BIOS: 2nd hard disk landing zone, high byte
DEV_cmos_set_reg(0x2b, DEV_cmos_get_reg(0x25));
// AMI BIOS: 2nd hard disk sectors/track
DEV_cmos_set_reg(0x2c, bx_options.atadevice[0][1].Ospt->get ());
}
DEV_cmos_set_reg(0x39, 0);
DEV_cmos_set_reg(0x3a, 0);
for (channel=0; channel<BX_MAX_ATA_CHANNEL; channel++) {
for (Bit8u device=0; device<2; device ++) {
if (bx_options.atadevice[channel][device].Opresent->get()) {
if (BX_DRIVE_IS_HD(channel,device)) {
Bit16u cylinders = bx_options.atadevice[channel][device].Ocylinders->get();
Bit16u heads = bx_options.atadevice[channel][device].Oheads->get();
Bit16u spt = bx_options.atadevice[channel][device].Ospt->get();
Bit8u translation = bx_options.atadevice[channel][device].Otranslation->get();
Bit8u reg = 0x39 + channel/2;
Bit8u bitshift = 2 * (device+(2 * (channel%2)));
// Find the right translation if autodetect
if (translation == BX_ATA_TRANSLATION_AUTO) {
if((cylinders <= 1024) && (heads <= 16) && (spt <= 63)) {
translation = BX_ATA_TRANSLATION_NONE;
}
else if (((Bit32u)cylinders * (Bit32u)heads) <= 131072) {
translation = BX_ATA_TRANSLATION_LARGE;
}
else translation = BX_ATA_TRANSLATION_LBA;
BX_INFO(("translation on ata%d-%d set to '%s'",channel, device,
translation==BX_ATA_TRANSLATION_NONE?"none":
translation==BX_ATA_TRANSLATION_LARGE?"large":
"lba"));
}
// FIXME we should test and warn
// - if LBA and spt != 63
// - if RECHS and heads != 16
// - if NONE and size > 1024*16*SPT blocks
// - if LARGE and size > 8192*16*SPT blocks
// - if RECHS and size > 1024*240*SPT blocks
// - if LBA and size > 1024*255*63, not that we can do much about it
switch(translation) {
case BX_ATA_TRANSLATION_NONE:
DEV_cmos_set_reg(reg, DEV_cmos_get_reg(reg) | (0 << bitshift));
break;
case BX_ATA_TRANSLATION_LBA:
DEV_cmos_set_reg(reg, DEV_cmos_get_reg(reg) | (1 << bitshift));
break;
case BX_ATA_TRANSLATION_LARGE:
DEV_cmos_set_reg(reg, DEV_cmos_get_reg(reg) | (2 << bitshift));
break;
case BX_ATA_TRANSLATION_RECHS:
DEV_cmos_set_reg(reg, DEV_cmos_get_reg(reg) | (3 << bitshift));
break;
}
}
}
}
}
// Set the "non-extended" boot device. This will default to DISKC if cdrom
if ( bx_options.Obootdrive->get () != BX_BOOT_FLOPPYA) {
// system boot sequence C:, A:
DEV_cmos_set_reg(0x2d, DEV_cmos_get_reg(0x2d) & 0xdf);
}
else { // 'a'
// system boot sequence A:, C:
DEV_cmos_set_reg(0x2d, DEV_cmos_get_reg(0x2d) | 0x20);
}
// Set the "extended" boot device, byte 0x3D (needed for cdrom booting)
if ( bx_options.Obootdrive->get () == BX_BOOT_FLOPPYA) {
// system boot sequence A:
DEV_cmos_set_reg(0x3d, 0x01);
BX_INFO(("Boot device will be 'a'"));
}
else if ( bx_options.Obootdrive->get () == BX_BOOT_DISKC) {
// system boot sequence C:
DEV_cmos_set_reg(0x3d, 0x02);
BX_INFO(("Boot device will be 'c'"));
}
else if ( bx_options.Obootdrive->get () == BX_BOOT_CDROM) {
// system boot sequence cdrom
DEV_cmos_set_reg(0x3d, 0x03);
BX_INFO(("Boot device will be 'cdrom'"));
}
// Set the signature check flag in cmos, inverted for compatibility
DEV_cmos_set_reg(0x38, bx_options.OfloppySigCheck->get());
BX_INFO(("Floppy boot signature check is %sabled", bx_options.OfloppySigCheck->get() ? "dis" : "en"));
}
}
void
bx_hard_drive_c::reset(unsigned type)
{
for (unsigned channel=0; channel<BX_MAX_ATA_CHANNEL; channel++) {
if (BX_HD_THIS channels[channel].irq)
DEV_pic_lower_irq(BX_HD_THIS channels[channel].irq);
}
}
#define GOTO_RETURN_VALUE if(io_len==4){\
goto return_value32;\
}\
else if(io_len==2){\
value16=(Bit16u)value32;\
goto return_value16;\
}\
else{\
value8=(Bit8u)value32;\
goto return_value8;\
}
// static IO port read callback handler
// redirects to non-static class handler to avoid virtual functions
Bit32u
bx_hard_drive_c::read_handler(void *this_ptr, Bit32u address, unsigned io_len)
{
#if !BX_USE_HD_SMF
bx_hard_drive_c *class_ptr = (bx_hard_drive_c *) this_ptr;
return( class_ptr->read(address, io_len) );
}
Bit32u
bx_hard_drive_c::read(Bit32u address, unsigned io_len)
{
#else
UNUSED(this_ptr);
#endif // !BX_USE_HD_SMF
Bit8u value8;
Bit16u value16;
Bit32u value32;
Bit8u channel = BX_MAX_ATA_CHANNEL;
Bit32u port = 0xff; // undefined
for (channel=0; channel<BX_MAX_ATA_CHANNEL; channel++) {
if ((address & 0xfff8) == BX_HD_THIS channels[channel].ioaddr1) {
port = address - BX_HD_THIS channels[channel].ioaddr1;
break;
}
else if ((address & 0xfff8) == BX_HD_THIS channels[channel].ioaddr2) {
port = address - BX_HD_THIS channels[channel].ioaddr2 + 0x10;
break;
}
}
if (channel == BX_MAX_ATA_CHANNEL) {
if ((address < 0x03f6) || (address > 0x03f7)) {
BX_PANIC(("read: unable to find ATA channel, ioport=0x%04x", address));
} else {
channel = 0;
port = address - 0x03e0;
}
}
#if BX_PDC20230C_VLBIDE_SUPPORT
// pdc20230c is only available for first ata channel
if (channel == 0) {
// Detect the switch to programming mode
if (!BX_HD_THIS pdc20230c.prog_mode) {
switch (port) {
case 0x02:
if ((BX_HD_THIS pdc20230c.prog_count == 0) || (BX_HD_THIS pdc20230c.prog_count > 2)) {
BX_HD_THIS pdc20230c.prog_count++;
}
else {
BX_HD_THIS pdc20230c.prog_count=0;
}
break;
case 0x16:
if ((BX_HD_THIS pdc20230c.prog_count == 1) || (BX_HD_THIS pdc20230c.prog_count == 2)) {
BX_HD_THIS pdc20230c.prog_count++;
}
else {
BX_HD_THIS pdc20230c.prog_count=0;
}
break;
default:
BX_HD_THIS pdc20230c.prog_count=0;
}
if (BX_HD_THIS pdc20230c.prog_count == 5) {
BX_HD_THIS pdc20230c.prog_mode = 1;
BX_SELECTED_CONTROLLER(channel).sector_count &= 0x7f;
BX_INFO(("Promise VLB-IDE DC2300: Switching to Programming mode"));
}
}
// Returns value when in programming mode
if (BX_HD_THIS pdc20230c.prog_mode) {
switch (port) {
case 0x05:
// Leave programming mode
BX_HD_THIS pdc20230c.prog_mode = 0;
BX_INFO(("Promise VLB-IDE DC2300: Leaving Programming mode"));
// Value will be sent be normal code
break;
case 0x03:
// Special programming register
value32 = BX_HD_THIS pdc20230c.p1f3_value;
GOTO_RETURN_VALUE ;
break;
case 0x04:
// Special programming register
value32 = BX_HD_THIS pdc20230c.p1f4_value;
GOTO_RETURN_VALUE ;
break;
}
}
}
#endif
switch (port) {
case 0x00: // hard disk data (16bit) 0x1f0
if (BX_SELECTED_CONTROLLER(channel).status.drq == 0) {
BX_ERROR(("IO read(0x%04x) with drq == 0: last command was %02xh",
address, (unsigned) BX_SELECTED_CONTROLLER(channel).current_command));
return(0);
}
BX_DEBUG(("IO read(0x%04x): current command is %02xh",
address, (unsigned) BX_SELECTED_CONTROLLER(channel).current_command));
switch (BX_SELECTED_CONTROLLER(channel).current_command) {
case 0x20: // READ SECTORS, with retries
case 0x21: // READ SECTORS, without retries
if (BX_SELECTED_CONTROLLER(channel).buffer_index >= 512)
BX_PANIC(("IO read(0x%04x): buffer_index >= 512", address));
#if BX_SupportRepeatSpeedups
if (DEV_bulk_io_quantum_requested()) {
unsigned transferLen, quantumsMax;
quantumsMax =
(512 - BX_SELECTED_CONTROLLER(channel).buffer_index) / io_len;
if ( quantumsMax == 0)
BX_PANIC(("IO read(0x%04x): not enough space for read", address));
DEV_bulk_io_quantum_transferred() =
DEV_bulk_io_quantum_requested();
if (quantumsMax < DEV_bulk_io_quantum_transferred())
DEV_bulk_io_quantum_transferred() = quantumsMax;
transferLen = io_len * DEV_bulk_io_quantum_transferred();
memcpy((Bit8u*) DEV_bulk_io_host_addr(),
&BX_SELECTED_CONTROLLER(channel).buffer[BX_SELECTED_CONTROLLER(channel).buffer_index],
transferLen);
DEV_bulk_io_host_addr() += transferLen;
BX_SELECTED_CONTROLLER(channel).buffer_index += transferLen;
value32 = 0; // Value returned not important;
}
else
#endif
{
value32 = 0L;
switch(io_len){
case 4:
value32 |= (BX_SELECTED_CONTROLLER(channel).buffer[BX_SELECTED_CONTROLLER(channel).buffer_index+3] << 24);
value32 |= (BX_SELECTED_CONTROLLER(channel).buffer[BX_SELECTED_CONTROLLER(channel).buffer_index+2] << 16);
case 2:
value32 |= (BX_SELECTED_CONTROLLER(channel).buffer[BX_SELECTED_CONTROLLER(channel).buffer_index+1] << 8);
value32 |= BX_SELECTED_CONTROLLER(channel).buffer[BX_SELECTED_CONTROLLER(channel).buffer_index];
}
BX_SELECTED_CONTROLLER(channel).buffer_index += io_len;
}
// if buffer completely read
if (BX_SELECTED_CONTROLLER(channel).buffer_index >= 512) {
// update sector count, sector number, cylinder,
// drive, head, status
// if there are more sectors, read next one in...
//
BX_SELECTED_CONTROLLER(channel).buffer_index = 0;
increment_address(channel);
BX_SELECTED_CONTROLLER(channel).status.busy = 0;
BX_SELECTED_CONTROLLER(channel).status.drive_ready = 1;
BX_SELECTED_CONTROLLER(channel).status.write_fault = 0;
if (bx_options.OnewHardDriveSupport->get ())
BX_SELECTED_CONTROLLER(channel).status.seek_complete = 1;
else
BX_SELECTED_CONTROLLER(channel).status.seek_complete = 0;
BX_SELECTED_CONTROLLER(channel).status.corrected_data = 0;
BX_SELECTED_CONTROLLER(channel).status.err = 0;
if (BX_SELECTED_CONTROLLER(channel).sector_count==0) {
BX_SELECTED_CONTROLLER(channel).status.drq = 0;
}
else { /* read next one into controller buffer */
off_t logical_sector;
off_t ret;
BX_SELECTED_CONTROLLER(channel).status.drq = 1;
BX_SELECTED_CONTROLLER(channel).status.seek_complete = 1;
#if TEST_READ_BEYOND_END==1
BX_SELECTED_CONTROLLER(channel).cylinder_no += 100000;
#endif
if (!calculate_logical_address(channel, &logical_sector)) {
BX_ERROR(("multi-sector read reached invalid sector %lu, aborting", (unsigned long)logical_sector));
command_aborted (channel, BX_SELECTED_CONTROLLER(channel).current_command);
GOTO_RETURN_VALUE ;
}
ret = BX_SELECTED_DRIVE(channel).hard_drive->lseek(logical_sector * 512, SEEK_SET);
if (ret < 0) {
BX_ERROR(("could not lseek() hard drive image file"));
command_aborted (channel, BX_SELECTED_CONTROLLER(channel).current_command);
GOTO_RETURN_VALUE ;
}
ret = BX_SELECTED_DRIVE(channel).hard_drive->read((bx_ptr_t) BX_SELECTED_CONTROLLER(channel).buffer, 512);
if (ret < 512) {
BX_ERROR(("logical sector was %lu", (unsigned long)logical_sector));
BX_ERROR(("could not read() hard drive image file at byte %lu", (unsigned long)logical_sector*512));
command_aborted (channel, BX_SELECTED_CONTROLLER(channel).current_command);
GOTO_RETURN_VALUE ;
}
BX_SELECTED_CONTROLLER(channel).buffer_index = 0;
raise_interrupt(channel);
}
}
GOTO_RETURN_VALUE ;
break;
case 0xec: // IDENTIFY DEVICE
case 0xa1:
if (bx_options.OnewHardDriveSupport->get ()) {
unsigned index;
BX_SELECTED_CONTROLLER(channel).status.busy = 0;
BX_SELECTED_CONTROLLER(channel).status.drive_ready = 1;
BX_SELECTED_CONTROLLER(channel).status.write_fault = 0;
BX_SELECTED_CONTROLLER(channel).status.seek_complete = 1;
BX_SELECTED_CONTROLLER(channel).status.corrected_data = 0;
BX_SELECTED_CONTROLLER(channel).status.err = 0;
index = BX_SELECTED_CONTROLLER(channel).buffer_index;
value32 = BX_SELECTED_CONTROLLER(channel).buffer[index];
index++;
if (io_len >= 2) {
value32 |= (BX_SELECTED_CONTROLLER(channel).buffer[index] << 8);
index++;
}
if (io_len == 4) {
value32 |= (BX_SELECTED_CONTROLLER(channel).buffer[index] << 16);
value32 |= (BX_SELECTED_CONTROLLER(channel).buffer[index+1] << 24);
index += 2;
}
BX_SELECTED_CONTROLLER(channel).buffer_index = index;
if (BX_SELECTED_CONTROLLER(channel).buffer_index >= 512) {
BX_SELECTED_CONTROLLER(channel).status.drq = 0;
if (bx_dbg.disk || (BX_SELECTED_IS_CD(channel) && bx_dbg.cdrom))
BX_INFO(("Read all drive ID Bytes ..."));
}
GOTO_RETURN_VALUE;
}
else
BX_PANIC(("IO read(0x%04x): current command is %02xh", address,
(unsigned) BX_SELECTED_CONTROLLER(channel).current_command));
case 0xa0: {
unsigned index = BX_SELECTED_CONTROLLER(channel).buffer_index;
unsigned increment = 0;
// Load block if necessary
if (index >= 2048) {
if (index > 2048)
BX_PANIC(("index > 2048 : 0x%x",index));
switch (BX_SELECTED_DRIVE(channel).atapi.command) {
case 0x28: // read (10)
case 0xa8: // read (12)
#ifdef LOWLEVEL_CDROM
if (!BX_SELECTED_DRIVE(channel).cdrom.ready) {
BX_PANIC(("Read with CDROM not ready"));
}
BX_SELECTED_DRIVE(channel).cdrom.cd->read_block(BX_SELECTED_CONTROLLER(channel).buffer,
BX_SELECTED_DRIVE(channel).cdrom.next_lba);
BX_SELECTED_DRIVE(channel).cdrom.next_lba++;
BX_SELECTED_DRIVE(channel).cdrom.remaining_blocks--;
if (bx_dbg.disk || (BX_SELECTED_IS_CD(channel) && bx_dbg.cdrom))
if (!BX_SELECTED_DRIVE(channel).cdrom.remaining_blocks)
BX_INFO(("Last READ block loaded {CDROM}"));
else
BX_INFO(("READ block loaded (%d remaining) {CDROM}",
BX_SELECTED_DRIVE(channel).cdrom.remaining_blocks));
// one block transfered, start at beginning
index = 0;
#else
BX_PANIC(("Read with no LOWLEVEL_CDROM"));
#endif
break;
default: // no need to load a new block
break;
}
}
value32 = BX_SELECTED_CONTROLLER(channel).buffer[index+increment];
increment++;
if (io_len >= 2) {
value32 |= (BX_SELECTED_CONTROLLER(channel).buffer[index+increment] << 8);
increment++;
}
if (io_len == 4) {
value32 |= (BX_SELECTED_CONTROLLER(channel).buffer[index+increment] << 16);
value32 |= (BX_SELECTED_CONTROLLER(channel).buffer[index+increment+1] << 24);
increment += 2;
}
BX_SELECTED_CONTROLLER(channel).buffer_index = index + increment;
BX_SELECTED_CONTROLLER(channel).drq_index += increment;
if (BX_SELECTED_CONTROLLER(channel).drq_index >= (unsigned)BX_SELECTED_DRIVE(channel).atapi.drq_bytes) {
BX_SELECTED_CONTROLLER(channel).status.drq = 0;
BX_SELECTED_CONTROLLER(channel).drq_index = 0;
BX_SELECTED_DRIVE(channel).atapi.total_bytes_remaining -= BX_SELECTED_DRIVE(channel).atapi.drq_bytes;
if (BX_SELECTED_DRIVE(channel).atapi.total_bytes_remaining > 0) {
// one or more blocks remaining (works only for single block commands)
if (bx_dbg.disk || (BX_SELECTED_IS_CD(channel) && bx_dbg.cdrom))
BX_INFO(("PACKET drq bytes read"));
BX_SELECTED_CONTROLLER(channel).interrupt_reason.i_o = 1;
BX_SELECTED_CONTROLLER(channel).status.busy = 0;
BX_SELECTED_CONTROLLER(channel).status.drq = 1;
BX_SELECTED_CONTROLLER(channel).interrupt_reason.c_d = 0;
// set new byte count if last block
if (BX_SELECTED_DRIVE(channel).atapi.total_bytes_remaining < BX_SELECTED_CONTROLLER(channel).byte_count) {
BX_SELECTED_CONTROLLER(channel).byte_count = BX_SELECTED_DRIVE(channel).atapi.total_bytes_remaining;
}
BX_SELECTED_DRIVE(channel).atapi.drq_bytes = BX_SELECTED_CONTROLLER(channel).byte_count;
raise_interrupt(channel);
} else {
// all bytes read
if (bx_dbg.disk || (BX_SELECTED_IS_CD(channel) && bx_dbg.cdrom))
BX_INFO(("PACKET all bytes read"));
BX_SELECTED_CONTROLLER(channel).interrupt_reason.i_o = 1;
BX_SELECTED_CONTROLLER(channel).interrupt_reason.c_d = 1;
BX_SELECTED_CONTROLLER(channel).status.drive_ready = 1;
BX_SELECTED_CONTROLLER(channel).interrupt_reason.rel = 0;
BX_SELECTED_CONTROLLER(channel).status.busy = 0;
BX_SELECTED_CONTROLLER(channel).status.drq = 0;
BX_SELECTED_CONTROLLER(channel).status.err = 0;
raise_interrupt(channel);
}
}
GOTO_RETURN_VALUE;
break;
}
// List all the read operations that are defined in the ATA/ATAPI spec
// that we don't support. Commands that are listed here will cause a
// BX_ERROR, which is non-fatal, and the command will be aborted.
case 0x08: BX_ERROR(("read cmd 0x08 (DEVICE RESET) not supported")); command_aborted(channel, 0x08); break;
case 0x10: BX_ERROR(("read cmd 0x10 (RECALIBRATE) not supported")); command_aborted(channel, 0x10); break;
case 0x22: BX_ERROR(("read cmd 0x22 (READ LONG) not supported")); command_aborted(channel, 0x22); break;
case 0x23: BX_ERROR(("read cmd 0x23 (READ LONG NO RETRY) not supported")); command_aborted(channel, 0x23); break;
case 0x24: BX_ERROR(("read cmd 0x24 (READ SECTORS EXT) not supported")); command_aborted(channel, 0x24); break;
case 0x25: BX_ERROR(("read cmd 0x25 (READ DMA EXT) not supported")); command_aborted(channel, 0x25); break;
case 0x26: BX_ERROR(("read cmd 0x26 (READ DMA QUEUED EXT) not supported")); command_aborted(channel, 0x26); break;
case 0x27: BX_ERROR(("read cmd 0x27 (READ NATIVE MAX ADDRESS EXT) not supported")); command_aborted(channel, 0x27); break;
case 0x29: BX_ERROR(("read cmd 0x29 (READ MULTIPLE EXT) not supported")); command_aborted(channel, 0x29); break;
case 0x2A: BX_ERROR(("read cmd 0x2A (READ STREAM DMA) not supported")); command_aborted(channel, 0x2A); break;
case 0x2B: BX_ERROR(("read cmd 0x2B (READ STREAM PIO) not supported")); command_aborted(channel, 0x2B); break;
case 0x2F: BX_ERROR(("read cmd 0x2F (READ LOG EXT) not supported")); command_aborted(channel, 0x2F); break;
case 0x30: BX_ERROR(("read cmd 0x30 (WRITE SECTORS) not supported")); command_aborted(channel, 0x30); break;
case 0x31: BX_ERROR(("read cmd 0x31 (WRITE SECTORS NO RETRY) not supported")); command_aborted(channel, 0x31); break;
case 0x32: BX_ERROR(("read cmd 0x32 (WRITE LONG) not supported")); command_aborted(channel, 0x32); break;
case 0x33: BX_ERROR(("read cmd 0x33 (WRITE LONG NO RETRY) not supported")); command_aborted(channel, 0x33); break;
case 0x34: BX_ERROR(("read cmd 0x34 (WRITE SECTORS EXT) not supported")); command_aborted(channel, 0x34); break;
case 0x35: BX_ERROR(("read cmd 0x35 (WRITE DMA EXT) not supported")); command_aborted(channel, 0x35); break;
case 0x36: BX_ERROR(("read cmd 0x36 (WRITE DMA QUEUED EXT) not supported")); command_aborted(channel, 0x36); break;
case 0x37: BX_ERROR(("read cmd 0x37 (SET MAX ADDRESS EXT) not supported")); command_aborted(channel, 0x37); break;
case 0x38: BX_ERROR(("read cmd 0x38 (CFA WRITE SECTORS W/OUT ERASE) not supported")); command_aborted(channel, 0x38); break;
case 0x39: BX_ERROR(("read cmd 0x39 (WRITE MULTIPLE EXT) not supported")); command_aborted(channel, 0x39); break;
case 0x3A: BX_ERROR(("read cmd 0x3A (WRITE STREAM DMA) not supported")); command_aborted(channel, 0x3A); break;
case 0x3B: BX_ERROR(("read cmd 0x3B (WRITE STREAM PIO) not supported")); command_aborted(channel, 0x3B); break;
case 0x3F: BX_ERROR(("read cmd 0x3F (WRITE LOG EXT) not supported")); command_aborted(channel, 0x3F); break;
case 0x40: BX_ERROR(("read cmd 0x40 (READ VERIFY SECTORS) not supported")); command_aborted(channel, 0x40); break;
case 0x41: BX_ERROR(("read cmd 0x41 (READ VERIFY SECTORS NO RETRY) not supported")); command_aborted(channel, 0x41); break;
case 0x42: BX_ERROR(("read cmd 0x42 (READ VERIFY SECTORS EXT) not supported")); command_aborted(channel, 0x42); break;
case 0x50: BX_ERROR(("read cmd 0x50 (FORMAT TRACK) not supported")); command_aborted(channel, 0x50); break;
case 0x51: BX_ERROR(("read cmd 0x51 (CONFIGURE STREAM) not supported")); command_aborted(channel, 0x51); break;
case 0x70: BX_ERROR(("read cmd 0x70 (SEEK) not supported")); command_aborted(channel, 0x70); break;
case 0x87: BX_ERROR(("read cmd 0x87 (CFA TRANSLATE SECTOR) not supported")); command_aborted(channel, 0x87); break;
case 0x90: BX_ERROR(("read cmd 0x90 (EXECUTE DEVICE DIAGNOSTIC) not supported")); command_aborted(channel, 0x90); break;
case 0x91: BX_ERROR(("read cmd 0x91 (INITIALIZE DEVICE PARAMETERS) not supported")); command_aborted(channel, 0x91); break;
case 0x92: BX_ERROR(("read cmd 0x92 (DOWNLOAD MICROCODE) not supported")); command_aborted(channel, 0x92); break;
case 0x94: BX_ERROR(("read cmd 0x94 (STANDBY IMMEDIATE) not supported")); command_aborted(channel, 0x94); break;
case 0x95: BX_ERROR(("read cmd 0x95 (IDLE IMMEDIATE) not supported")); command_aborted(channel, 0x95); break;
case 0x96: BX_ERROR(("read cmd 0x96 (STANDBY) not supported")); command_aborted(channel, 0x96); break;
case 0x97: BX_ERROR(("read cmd 0x97 (IDLE) not supported")); command_aborted(channel, 0x97); break;
case 0x98: BX_ERROR(("read cmd 0x98 (CHECK POWER MODE) not supported")); command_aborted(channel, 0x98); break;
case 0x99: BX_ERROR(("read cmd 0x99 (SLEEP) not supported")); command_aborted(channel, 0x99); break;
case 0xA2: BX_ERROR(("read cmd 0xA2 (SERVICE) not supported")); command_aborted(channel, 0xA2); break;
case 0xB0: BX_ERROR(("read cmd 0xB0 (SMART DISABLE OPERATIONS) not supported")); command_aborted(channel, 0xB0); break;
case 0xB1: BX_ERROR(("read cmd 0xB1 (DEVICE CONFIGURATION FREEZE LOCK) not supported")); command_aborted(channel, 0xB1); break;
case 0xC0: BX_ERROR(("read cmd 0xC0 (CFA ERASE SECTORS) not supported")); command_aborted(channel, 0xC0); break;
case 0xC4: BX_ERROR(("read cmd 0xC4 (READ MULTIPLE) not supported")); command_aborted(channel, 0xC4); break;
case 0xC5: BX_ERROR(("read cmd 0xC5 (WRITE MULTIPLE) not supported")); command_aborted(channel, 0xC5); break;
case 0xC6: BX_ERROR(("read cmd 0xC6 (SET MULTIPLE MODE) not supported")); command_aborted(channel, 0xC6); break;
case 0xC7: BX_ERROR(("read cmd 0xC7 (READ DMA QUEUED) not supported")); command_aborted(channel, 0xC7); break;
case 0xC8: BX_ERROR(("read cmd 0xC8 (READ DMA) not supported")); command_aborted(channel, 0xC8); break;
case 0xC9: BX_ERROR(("read cmd 0xC9 (READ DMA NO RETRY) not supported")); command_aborted(channel, 0xC9); break;
case 0xCA: BX_ERROR(("read cmd 0xCA (WRITE DMA) not supported")); command_aborted(channel, 0xCA); break;
case 0xCC: BX_ERROR(("read cmd 0xCC (WRITE DMA QUEUED) not supported")); command_aborted(channel, 0xCC); break;
case 0xCD: BX_ERROR(("read cmd 0xCD (CFA WRITE MULTIPLE W/OUT ERASE) not supported")); command_aborted(channel, 0xCD); break;
case 0xD1: BX_ERROR(("read cmd 0xD1 (CHECK MEDIA CARD TYPE) not supported")); command_aborted(channel, 0xD1); break;
case 0xDA: BX_ERROR(("read cmd 0xDA (GET MEDIA STATUS) not supported")); command_aborted(channel, 0xDA); break;
case 0xDE: BX_ERROR(("read cmd 0xDE (MEDIA LOCK) not supported")); command_aborted(channel, 0xDE); break;
case 0xDF: BX_ERROR(("read cmd 0xDF (MEDIA UNLOCK) not supported")); command_aborted(channel, 0xDF); break;
case 0xE0: BX_ERROR(("read cmd 0xE0 (STANDBY IMMEDIATE) not supported")); command_aborted(channel, 0xE0); break;
case 0xE1: BX_ERROR(("read cmd 0xE1 (IDLE IMMEDIATE) not supported")); command_aborted(channel, 0xE1); break;
case 0xE2: BX_ERROR(("read cmd 0xE2 (STANDBY) not supported")); command_aborted(channel, 0xE2); break;
case 0xE3: BX_ERROR(("read cmd 0xE3 (IDLE) not supported")); command_aborted(channel, 0xE3); break;
case 0xE4: BX_ERROR(("read cmd 0xE4 (READ BUFFER) not supported")); command_aborted(channel, 0xE4); break;
case 0xE5: BX_ERROR(("read cmd 0xE5 (CHECK POWER MODE) not supported")); command_aborted(channel, 0xE5); break;
case 0xE6: BX_ERROR(("read cmd 0xE6 (SLEEP) not supported")); command_aborted(channel, 0xE6); break;
case 0xE7: BX_ERROR(("read cmd 0xE7 (FLUSH CACHE) not supported")); command_aborted(channel, 0xE7); break;
case 0xE8: BX_ERROR(("read cmd 0xE8 (WRITE BUFFER) not supported")); command_aborted(channel, 0xE8); break;
case 0xEA: BX_ERROR(("read cmd 0xEA (FLUSH CACHE EXT) not supported")); command_aborted(channel, 0xEA); break;
case 0xED: BX_ERROR(("read cmd 0xED (MEDIA EJECT) not supported")); command_aborted(channel, 0xED); break;
case 0xEF: BX_ERROR(("read cmd 0xEF (SET FEATURES) not supported")); command_aborted(channel, 0xEF); break;
case 0xF1: BX_ERROR(("read cmd 0xF1 (SECURITY SET PASSWORD) not supported")); command_aborted(channel, 0xF1); break;
case 0xF2: BX_ERROR(("read cmd 0xF2 (SECURITY UNLOCK) not supported")); command_aborted(channel, 0xF2); break;
case 0xF3: BX_ERROR(("read cmd 0xF3 (SECURITY ERASE PREPARE) not supported")); command_aborted(channel, 0xF3); break;
case 0xF4: BX_ERROR(("read cmd 0xF4 (SECURITY ERASE UNIT) not supported")); command_aborted(channel, 0xF4); break;
case 0xF5: BX_ERROR(("read cmd 0xF5 (SECURITY FREEZE LOCK) not supported")); command_aborted(channel, 0xF5); break;
case 0xF6: BX_ERROR(("read cmd 0xF6 (SECURITY DISABLE PASSWORD) not supported")); command_aborted(channel, 0xF6); break;
case 0xF8: BX_ERROR(("read cmd 0xF8 (READ NATIVE MAX ADDRESS) not supported")); command_aborted(channel, 0xF8); break;
case 0xF9: BX_ERROR(("read cmd 0xF9 (SET MAX ADDRESS) not supported")); command_aborted(channel, 0xF9); break;
default:
BX_PANIC(("IO read(0x%04x): current command is %02xh", address,
(unsigned) BX_SELECTED_CONTROLLER(channel).current_command));
}
break;
case 0x01: // hard disk error register 0x1f1
BX_SELECTED_CONTROLLER(channel).status.err = 0;
value8 = (!BX_SELECTED_IS_PRESENT(channel)) ? 0 : BX_SELECTED_CONTROLLER(channel).error_register;
goto return_value8;
break;
case 0x02: // hard disk sector count / interrupt reason 0x1f2
value8 = (!BX_SELECTED_IS_PRESENT(channel)) ? 0 : BX_SELECTED_CONTROLLER(channel).sector_count;
goto return_value8;
break;
case 0x03: // sector number 0x1f3
value8 = (!BX_SELECTED_IS_PRESENT(channel)) ? 0 : BX_SELECTED_CONTROLLER(channel).sector_no;
goto return_value8;
case 0x04: // cylinder low 0x1f4
// -- WARNING : On real hardware the controller registers are shared between drives.
// So we must respond even if the select device is not present. Some OS uses this fact
// to detect the disks.... minix2 for example
value8 = (!BX_ANY_IS_PRESENT(channel)) ? 0 : (BX_SELECTED_CONTROLLER(channel).cylinder_no & 0x00ff);
goto return_value8;
case 0x05: // cylinder high 0x1f5
// -- WARNING : On real hardware the controller registers are shared between drives.
// So we must respond even if the select device is not present. Some OS uses this fact
// to detect the disks.... minix2 for example
value8 = (!BX_ANY_IS_PRESENT(channel)) ? 0 : BX_SELECTED_CONTROLLER(channel).cylinder_no >> 8;
goto return_value8;
case 0x06: // hard disk drive and head register 0x1f6
// b7 Extended data field for ECC
// b6/b5: Used to be sector size. 00=256,01=512,10=1024,11=128
// Since 512 was always used, bit 6 was taken to mean LBA mode:
// b6 1=LBA mode, 0=CHS mode
// b5 1
// b4: DRV
// b3..0 HD3..HD0
value8 = (1 << 7) |
((BX_SELECTED_CONTROLLER(channel).lba_mode>0) << 6) |
(1 << 5) | // 01b = 512 sector size
(BX_HD_THIS channels[channel].drive_select << 4) |
(BX_SELECTED_CONTROLLER(channel).head_no << 0);
goto return_value8;
break;
//BX_CONTROLLER(channel,0).lba_mode
case 0x07: // Hard Disk Status 0x1f7
case 0x16: // Hard Disk Alternate Status 0x3f6
if (!BX_ANY_IS_PRESENT(channel)) {
// (mch) Just return zero for these registers
value8 = 0;
} else {
value8 = (
(BX_SELECTED_CONTROLLER(channel).status.busy << 7) |
(BX_SELECTED_CONTROLLER(channel).status.drive_ready << 6) |
(BX_SELECTED_CONTROLLER(channel).status.write_fault << 5) |
(BX_SELECTED_CONTROLLER(channel).status.seek_complete << 4) |
(BX_SELECTED_CONTROLLER(channel).status.drq << 3) |
(BX_SELECTED_CONTROLLER(channel).status.corrected_data << 2) |
(BX_SELECTED_CONTROLLER(channel).status.index_pulse << 1) |
(BX_SELECTED_CONTROLLER(channel).status.err) );
BX_SELECTED_CONTROLLER(channel).status.index_pulse_count++;
BX_SELECTED_CONTROLLER(channel).status.index_pulse = 0;
if (BX_SELECTED_CONTROLLER(channel).status.index_pulse_count >= INDEX_PULSE_CYCLE) {
BX_SELECTED_CONTROLLER(channel).status.index_pulse = 1;
BX_SELECTED_CONTROLLER(channel).status.index_pulse_count = 0;
}
}
if (port == 0x07) {
DEV_pic_lower_irq(BX_HD_THIS channels[channel].irq);
}
goto return_value8;
break;
case 0x17: // Hard Disk Address Register 0x3f7
// Obsolete and unsupported register. Not driven by hard
// disk controller. Report all 1's. If floppy controller
// is handling this address, it will call this function
// set/clear D7 (the only bit it handles), then return
// the combined value
value8 = 0xff;
goto return_value8;
break;
default:
BX_PANIC(("hard drive: io read to address %x unsupported",
(unsigned) address));
}
BX_PANIC(("hard drive: shouldnt get here!"));
return(0);
return_value32:
BX_DEBUG(("32-bit read from %04x = %08x {%s}",
(unsigned) address, value32, BX_SELECTED_TYPE_STRING(channel)));
return value32;
return_value16:
BX_DEBUG(("16-bit read from %04x = %04x {%s}",
(unsigned) address, value16, BX_SELECTED_TYPE_STRING(channel)));
return value16;
return_value8:
BX_DEBUG(("8-bit read from %04x = %02x {%s}",
(unsigned) address, value8, BX_SELECTED_TYPE_STRING(channel)));
return value8;
}
// static IO port write callback handler
// redirects to non-static class handler to avoid virtual functions
void
bx_hard_drive_c::write_handler(void *this_ptr, Bit32u address, Bit32u value, unsigned io_len)
{
#if !BX_USE_HD_SMF
bx_hard_drive_c *class_ptr = (bx_hard_drive_c *) this_ptr;
class_ptr->write(address, value, io_len);
}
void
bx_hard_drive_c::write(Bit32u address, Bit32u value, unsigned io_len)
{
#else
UNUSED(this_ptr);
#endif // !BX_USE_HD_SMF
off_t logical_sector;
off_t ret;
bx_bool prev_control_reset;
Bit8u channel = BX_MAX_ATA_CHANNEL;
Bit32u port = 0xff; // undefined
for (channel=0; channel<BX_MAX_ATA_CHANNEL; channel++) {
if ((address & 0xfff8) == BX_HD_THIS channels[channel].ioaddr1) {
port = address - BX_HD_THIS channels[channel].ioaddr1;
break;
}
else if ((address & 0xfff8) == BX_HD_THIS channels[channel].ioaddr2) {
port = address - BX_HD_THIS channels[channel].ioaddr2 + 0x10;
break;
}
}
if (channel == BX_MAX_ATA_CHANNEL) {
if (address != 0x03f6) {
BX_PANIC(("write: unable to find ATA channel, ioport=0x%04x", address));
} else {
channel = 0;
port = address - 0x03e0;
}
}
#if BX_PDC20230C_VLBIDE_SUPPORT
// pdc20230c is only available for first ata channel
if (channel == 0) {
BX_HD_THIS pdc20230c.prog_count = 0;
if (BX_HD_THIS pdc20230c.prog_mode != 0) {
switch (port) {
case 0x03:
BX_HD_THIS pdc20230c.p1f3_value = value;
return;
break;
case 0x04:
BX_HD_THIS pdc20230c.p1f4_value = value;
return;
break;
}
}
}
#endif
if (bx_dbg.disk || (BX_SELECTED_IS_CD(channel) && bx_dbg.cdrom)) {
switch (io_len) {
case 1:
BX_INFO(("8-bit write to %04x = %02x {%s}",
(unsigned) address, (unsigned) value, BX_SELECTED_TYPE_STRING(channel)));
break;
case 2:
BX_INFO(("16-bit write to %04x = %04x {%s}",
(unsigned) address, (unsigned) value, BX_SELECTED_TYPE_STRING(channel)));
break;
case 4:
BX_INFO(("32-bit write to %04x = %08x {%s}",
(unsigned) address, (unsigned) value, BX_SELECTED_TYPE_STRING(channel)));
break;
default:
BX_INFO(("unknown-size write to %04x = %08x {%s}",
(unsigned) address, (unsigned) value, BX_SELECTED_TYPE_STRING(channel)));
break;
}
}
BX_DEBUG(("IO write to %04x = %02x", (unsigned) address, (unsigned) value));
switch (port) {
case 0x00: // 0x1f0
switch (BX_SELECTED_CONTROLLER(channel).current_command) {
case 0x30: // WRITE SECTORS
if (BX_SELECTED_CONTROLLER(channel).buffer_index >= 512)
BX_PANIC(("IO write(0x%04x): buffer_index >= 512", address));
#if BX_SupportRepeatSpeedups
if (DEV_bulk_io_quantum_requested()) {
unsigned transferLen, quantumsMax;
quantumsMax =
(512 - BX_SELECTED_CONTROLLER(channel).buffer_index) / io_len;
if ( quantumsMax == 0)
BX_PANIC(("IO write(0x%04x): not enough space for write", address));
DEV_bulk_io_quantum_transferred() =
DEV_bulk_io_quantum_requested();
if (quantumsMax < DEV_bulk_io_quantum_transferred())
DEV_bulk_io_quantum_transferred() = quantumsMax;
transferLen = io_len * DEV_bulk_io_quantum_transferred();
memcpy(
&BX_SELECTED_CONTROLLER(channel).buffer[BX_SELECTED_CONTROLLER(channel).buffer_index],
(Bit8u*) DEV_bulk_io_host_addr(),
transferLen);
DEV_bulk_io_host_addr() += transferLen;
BX_SELECTED_CONTROLLER(channel).buffer_index += transferLen;
}
else
#endif
{
switch(io_len){
case 4:
BX_SELECTED_CONTROLLER(channel).buffer[BX_SELECTED_CONTROLLER(channel).buffer_index+3] = (Bit8u)(value >> 24);
BX_SELECTED_CONTROLLER(channel).buffer[BX_SELECTED_CONTROLLER(channel).buffer_index+2] = (Bit8u)(value >> 16);
case 2:
BX_SELECTED_CONTROLLER(channel).buffer[BX_SELECTED_CONTROLLER(channel).buffer_index+1] = (Bit8u)(value >> 8);
BX_SELECTED_CONTROLLER(channel).buffer[BX_SELECTED_CONTROLLER(channel).buffer_index] = (Bit8u) value;
}
BX_SELECTED_CONTROLLER(channel).buffer_index += io_len;
}
/* if buffer completely writtten */
if (BX_SELECTED_CONTROLLER(channel).buffer_index >= 512) {
off_t logical_sector;
off_t ret;
#if TEST_WRITE_BEYOND_END==1
BX_SELECTED_CONTROLLER(channel).cylinder_no += 100000;
#endif
if (!calculate_logical_address(channel, &logical_sector)) {
BX_ERROR(("write reached invalid sector %lu, aborting", (unsigned long)logical_sector));
command_aborted (channel, BX_SELECTED_CONTROLLER(channel).current_command);
return;
}
#if TEST_WRITE_BEYOND_END==2
logical_sector += 100000;
#endif
ret = BX_SELECTED_DRIVE(channel).hard_drive->lseek(logical_sector * 512, SEEK_SET);
if (ret < 0) {
BX_ERROR(("could not lseek() hard drive image file at byte %lu", (unsigned long)logical_sector * 512));
command_aborted (channel, BX_SELECTED_CONTROLLER(channel).current_command);
return;
}
ret = BX_SELECTED_DRIVE(channel).hard_drive->write((bx_ptr_t) BX_SELECTED_CONTROLLER(channel).buffer, 512);
if (ret < 512) {
BX_ERROR(("could not write() hard drive image file at byte %lu", (unsigned long)logical_sector*512));
command_aborted (channel, BX_SELECTED_CONTROLLER(channel).current_command);
return;
}
BX_SELECTED_CONTROLLER(channel).buffer_index = 0;
/* update sector count, sector number, cylinder,
* drive, head, status
* if there are more sectors, read next one in...
*/
increment_address(channel);
/* When the write is complete, controller clears the DRQ bit and
* sets the BSY bit.
* If at least one more sector is to be written, controller sets DRQ bit,
* clears BSY bit, and issues IRQ
*/
if (BX_SELECTED_CONTROLLER(channel).sector_count!=0) {
BX_SELECTED_CONTROLLER(channel).status.busy = 0;
BX_SELECTED_CONTROLLER(channel).status.drive_ready = 1;
BX_SELECTED_CONTROLLER(channel).status.drq = 1;
BX_SELECTED_CONTROLLER(channel).status.corrected_data = 0;
BX_SELECTED_CONTROLLER(channel).status.err = 0;
}
else { /* no more sectors to write */
BX_SELECTED_CONTROLLER(channel).status.busy = 0;
BX_SELECTED_CONTROLLER(channel).status.drive_ready = 1;
BX_SELECTED_CONTROLLER(channel).status.drq = 0;
BX_SELECTED_CONTROLLER(channel).status.err = 0;
BX_SELECTED_CONTROLLER(channel).status.corrected_data = 0;
}
raise_interrupt(channel);
}
break;
case 0xa0: // PACKET
if (BX_SELECTED_CONTROLLER(channel).buffer_index >= PACKET_SIZE)
BX_PANIC(("IO write(0x%04x): buffer_index >= PACKET_SIZE", address));
BX_SELECTED_CONTROLLER(channel).buffer[BX_SELECTED_CONTROLLER(channel).buffer_index] = value;
BX_SELECTED_CONTROLLER(channel).buffer[BX_SELECTED_CONTROLLER(channel).buffer_index+1] = (value >> 8);
BX_SELECTED_CONTROLLER(channel).buffer_index += 2;
/* if packet completely writtten */
if (BX_SELECTED_CONTROLLER(channel).buffer_index >= PACKET_SIZE) {
// complete command received
Bit8u atapi_command = BX_SELECTED_CONTROLLER(channel).buffer[0];
if (bx_dbg.cdrom)
BX_INFO(("cdrom: ATAPI command 0x%x started", atapi_command));
switch (atapi_command) {
case 0x00: // test unit ready
if (BX_SELECTED_DRIVE(channel).cdrom.ready) {
atapi_cmd_nop(channel);
} else {
atapi_cmd_error(channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
}
raise_interrupt(channel);
break;
case 0x03: { // request sense
int alloc_length = BX_SELECTED_CONTROLLER(channel).buffer[4];
init_send_atapi_command(channel, atapi_command, 18, alloc_length);
// sense data
BX_SELECTED_CONTROLLER(channel).buffer[0] = 0x70 | (1 << 7);
BX_SELECTED_CONTROLLER(channel).buffer[1] = 0;
BX_SELECTED_CONTROLLER(channel).buffer[2] = BX_SELECTED_DRIVE(channel).sense.sense_key;
BX_SELECTED_CONTROLLER(channel).buffer[3] = BX_SELECTED_DRIVE(channel).sense.information.arr[0];
BX_SELECTED_CONTROLLER(channel).buffer[4] = BX_SELECTED_DRIVE(channel).sense.information.arr[1];
BX_SELECTED_CONTROLLER(channel).buffer[5] = BX_SELECTED_DRIVE(channel).sense.information.arr[2];
BX_SELECTED_CONTROLLER(channel).buffer[6] = BX_SELECTED_DRIVE(channel).sense.information.arr[3];
BX_SELECTED_CONTROLLER(channel).buffer[7] = 17-7;
BX_SELECTED_CONTROLLER(channel).buffer[8] = BX_SELECTED_DRIVE(channel).sense.specific_inf.arr[0];
BX_SELECTED_CONTROLLER(channel).buffer[9] = BX_SELECTED_DRIVE(channel).sense.specific_inf.arr[1];
BX_SELECTED_CONTROLLER(channel).buffer[10] = BX_SELECTED_DRIVE(channel).sense.specific_inf.arr[2];
BX_SELECTED_CONTROLLER(channel).buffer[11] = BX_SELECTED_DRIVE(channel).sense.specific_inf.arr[3];
BX_SELECTED_CONTROLLER(channel).buffer[12] = BX_SELECTED_DRIVE(channel).sense.asc;
BX_SELECTED_CONTROLLER(channel).buffer[13] = BX_SELECTED_DRIVE(channel).sense.ascq;
BX_SELECTED_CONTROLLER(channel).buffer[14] = BX_SELECTED_DRIVE(channel).sense.fruc;
BX_SELECTED_CONTROLLER(channel).buffer[15] = BX_SELECTED_DRIVE(channel).sense.key_spec.arr[0];
BX_SELECTED_CONTROLLER(channel).buffer[16] = BX_SELECTED_DRIVE(channel).sense.key_spec.arr[1];
BX_SELECTED_CONTROLLER(channel).buffer[17] = BX_SELECTED_DRIVE(channel).sense.key_spec.arr[2];
ready_to_send_atapi(channel);
}
break;
case 0x1b: { // start stop unit
//bx_bool Immed = (BX_SELECTED_CONTROLLER(channel).buffer[1] >> 0) & 1;
bx_bool LoEj = (BX_SELECTED_CONTROLLER(channel).buffer[4] >> 1) & 1;
bx_bool Start = (BX_SELECTED_CONTROLLER(channel).buffer[4] >> 0) & 1;
if (!LoEj && !Start) { // stop the disc
BX_ERROR(("FIXME: Stop disc not implemented"));
atapi_cmd_nop(channel);
raise_interrupt(channel);
} else if (!LoEj && Start) { // start (spin up) the disc
#ifdef LOWLEVEL_CDROM
BX_SELECTED_DRIVE(channel).cdrom.cd->start_cdrom();
#endif
BX_ERROR(("FIXME: ATAPI start disc not reading TOC"));
atapi_cmd_nop(channel);
raise_interrupt(channel);
} else if (LoEj && !Start) { // Eject the disc
atapi_cmd_nop(channel);
if (BX_SELECTED_DRIVE(channel).cdrom.ready) {
#ifdef LOWLEVEL_CDROM
BX_SELECTED_DRIVE(channel).cdrom.cd->eject_cdrom();
#endif
BX_SELECTED_DRIVE(channel).cdrom.ready = 0;
bx_options.atadevice[channel][BX_SLAVE_SELECTED(channel)].Ostatus->set(BX_EJECTED);
bx_gui->update_drive_status_buttons();
}
raise_interrupt(channel);
} else { // Load the disc
// My guess is that this command only closes the tray, that's a no-op for us
atapi_cmd_nop(channel);
raise_interrupt(channel);
}
}
break;
case 0xbd: { // mechanism status
uint16 alloc_length = read_16bit(BX_SELECTED_CONTROLLER(channel).buffer + 8);
if (alloc_length == 0)
BX_PANIC(("Zero allocation length to MECHANISM STATUS not impl."));
init_send_atapi_command(channel, atapi_command, 8, alloc_length);
BX_SELECTED_CONTROLLER(channel).buffer[0] = 0; // reserved for non changers
BX_SELECTED_CONTROLLER(channel).buffer[1] = 0; // reserved for non changers
BX_SELECTED_CONTROLLER(channel).buffer[2] = 0; // Current LBA (TODO!)
BX_SELECTED_CONTROLLER(channel).buffer[3] = 0; // Current LBA (TODO!)
BX_SELECTED_CONTROLLER(channel).buffer[4] = 0; // Current LBA (TODO!)
BX_SELECTED_CONTROLLER(channel).buffer[5] = 1; // one slot
BX_SELECTED_CONTROLLER(channel).buffer[6] = 0; // slot table length
BX_SELECTED_CONTROLLER(channel).buffer[7] = 0; // slot table length
ready_to_send_atapi(channel);
}
break;
case 0x5a: { // mode sense
uint16 alloc_length = read_16bit(BX_SELECTED_CONTROLLER(channel).buffer + 7);
Bit8u PC = BX_SELECTED_CONTROLLER(channel).buffer[2] >> 6;
Bit8u PageCode = BX_SELECTED_CONTROLLER(channel).buffer[2] & 0x3f;
switch (PC) {
case 0x0: // current values
switch (PageCode) {
case 0x01: // error recovery
init_send_atapi_command(channel, atapi_command, sizeof(error_recovery_t) + 8, alloc_length);
init_mode_sense_single(channel, &BX_SELECTED_DRIVE(channel).cdrom.current.error_recovery,
sizeof(error_recovery_t));
ready_to_send_atapi(channel);
break;
case 0x2a: // CD-ROM capabilities & mech. status
init_send_atapi_command(channel, atapi_command, 28, alloc_length);
init_mode_sense_single(channel, &BX_SELECTED_CONTROLLER(channel).buffer[8], 28);
BX_SELECTED_CONTROLLER(channel).buffer[8] = 0x2a;
BX_SELECTED_CONTROLLER(channel).buffer[9] = 0x12;
BX_SELECTED_CONTROLLER(channel).buffer[10] = 0x00;
BX_SELECTED_CONTROLLER(channel).buffer[11] = 0x00;
// Multisession, Mode 2 Form 2, Mode 2 Form 1
BX_SELECTED_CONTROLLER(channel).buffer[12] = 0x70;
BX_SELECTED_CONTROLLER(channel).buffer[13] = (3 << 5);
BX_SELECTED_CONTROLLER(channel).buffer[14] = (unsigned char)
(1 |
(BX_SELECTED_DRIVE(channel).cdrom.locked ? (1 << 1) : 0) |
(1 << 3) |
(1 << 5));
BX_SELECTED_CONTROLLER(channel).buffer[15] = 0x00;
BX_SELECTED_CONTROLLER(channel).buffer[16] = (706 >> 8) & 0xff;
BX_SELECTED_CONTROLLER(channel).buffer[17] = 706 & 0xff;
BX_SELECTED_CONTROLLER(channel).buffer[18] = 0;
BX_SELECTED_CONTROLLER(channel).buffer[19] = 2;
BX_SELECTED_CONTROLLER(channel).buffer[20] = (512 >> 8) & 0xff;
BX_SELECTED_CONTROLLER(channel).buffer[21] = 512 & 0xff;
BX_SELECTED_CONTROLLER(channel).buffer[22] = (706 >> 8) & 0xff;
BX_SELECTED_CONTROLLER(channel).buffer[23] = 706 & 0xff;
BX_SELECTED_CONTROLLER(channel).buffer[24] = 0;
BX_SELECTED_CONTROLLER(channel).buffer[25] = 0;
BX_SELECTED_CONTROLLER(channel).buffer[26] = 0;
BX_SELECTED_CONTROLLER(channel).buffer[27] = 0;
ready_to_send_atapi(channel);
break;
case 0x0d: // CD-ROM
case 0x0e: // CD-ROM audio control
case 0x3f: // all
BX_ERROR(("cdrom: MODE SENSE (curr), code=%x"
" not implemented yet",
PageCode));
atapi_cmd_error(channel, SENSE_ILLEGAL_REQUEST,
ASC_INV_FIELD_IN_CMD_PACKET);
raise_interrupt(channel);
break;
default:
// not implemeted by this device
BX_INFO(("cdrom: MODE SENSE PC=%x, PageCode=%x,"
" not implemented by device",
PC, PageCode));
atapi_cmd_error(channel, SENSE_ILLEGAL_REQUEST,
ASC_INV_FIELD_IN_CMD_PACKET);
raise_interrupt(channel);
break;
}
break;
case 0x1: // changeable values
switch (PageCode) {
case 0x01: // error recovery
case 0x0d: // CD-ROM
case 0x0e: // CD-ROM audio control
case 0x2a: // CD-ROM capabilities & mech. status
case 0x3f: // all
BX_ERROR(("cdrom: MODE SENSE (chg), code=%x"
" not implemented yet",
PageCode));
atapi_cmd_error(channel, SENSE_ILLEGAL_REQUEST,
ASC_INV_FIELD_IN_CMD_PACKET);
raise_interrupt(channel);
break;
default:
// not implemeted by this device
BX_INFO(("cdrom: MODE SENSE PC=%x, PageCode=%x,"
" not implemented by device",
PC, PageCode));
atapi_cmd_error(channel, SENSE_ILLEGAL_REQUEST,
ASC_INV_FIELD_IN_CMD_PACKET);
raise_interrupt(channel);
break;
}
break;
case 0x2: // default values
switch (PageCode) {
case 0x01: // error recovery
case 0x0d: // CD-ROM
case 0x0e: // CD-ROM audio control
case 0x2a: // CD-ROM capabilities & mech. status
case 0x3f: // all
BX_PANIC(("cdrom: MODE SENSE (dflt), code=%x",
PageCode));
break;
default:
// not implemeted by this device
BX_INFO(("cdrom: MODE SENSE PC=%x, PageCode=%x,"
" not implemented by device",
PC, PageCode));
atapi_cmd_error(channel, SENSE_ILLEGAL_REQUEST,
ASC_INV_FIELD_IN_CMD_PACKET);
raise_interrupt(channel);
break;
}
break;
case 0x3: // saved values not implemented
atapi_cmd_error(channel, SENSE_ILLEGAL_REQUEST, ASC_SAVING_PARAMETERS_NOT_SUPPORTED);
raise_interrupt(channel);
break;
default:
BX_PANIC(("Should not get here!"));
break;
}
}
break;
case 0x12: { // inquiry
uint8 alloc_length = BX_SELECTED_CONTROLLER(channel).buffer[4];
init_send_atapi_command(channel, atapi_command, 36, alloc_length);
BX_SELECTED_CONTROLLER(channel).buffer[0] = 0x05; // CD-ROM
BX_SELECTED_CONTROLLER(channel).buffer[1] = 0x80; // Removable
BX_SELECTED_CONTROLLER(channel).buffer[2] = 0x00; // ISO, ECMA, ANSI version
BX_SELECTED_CONTROLLER(channel).buffer[3] = 0x21; // ATAPI-2, as specified
BX_SELECTED_CONTROLLER(channel).buffer[4] = 31; // additional length (total 36)
BX_SELECTED_CONTROLLER(channel).buffer[5] = 0x00; // reserved
BX_SELECTED_CONTROLLER(channel).buffer[6] = 0x00; // reserved
BX_SELECTED_CONTROLLER(channel).buffer[7] = 0x00; // reserved
// Vendor ID
const char* vendor_id = "VTAB ";
int i;
for (i = 0; i < 8; i++)
BX_SELECTED_CONTROLLER(channel).buffer[8+i] = vendor_id[i];
// Product ID
const char* product_id = "Turbo CD-ROM ";
for (i = 0; i < 16; i++)
BX_SELECTED_CONTROLLER(channel).buffer[16+i] = product_id[i];
// Product Revision level
const char* rev_level = "1.0 ";
for (i = 0; i < 4; i++)
BX_SELECTED_CONTROLLER(channel).buffer[32+i] = rev_level[i];
ready_to_send_atapi(channel);
}
break;
case 0x25: { // read cd-rom capacity
// no allocation length???
init_send_atapi_command(channel, atapi_command, 8, 8);
if (BX_SELECTED_DRIVE(channel).cdrom.ready) {
uint32 capacity = BX_SELECTED_DRIVE(channel).cdrom.capacity;
BX_INFO(("Capacity is %d sectors (%d bytes)", capacity, capacity * 2048));
BX_SELECTED_CONTROLLER(channel).buffer[0] = (capacity >> 24) & 0xff;
BX_SELECTED_CONTROLLER(channel).buffer[1] = (capacity >> 16) & 0xff;
BX_SELECTED_CONTROLLER(channel).buffer[2] = (capacity >> 8) & 0xff;
BX_SELECTED_CONTROLLER(channel).buffer[3] = (capacity >> 0) & 0xff;
BX_SELECTED_CONTROLLER(channel).buffer[4] = (2048 >> 24) & 0xff;
BX_SELECTED_CONTROLLER(channel).buffer[5] = (2048 >> 16) & 0xff;
BX_SELECTED_CONTROLLER(channel).buffer[6] = (2048 >> 8) & 0xff;
BX_SELECTED_CONTROLLER(channel).buffer[7] = (2048 >> 0) & 0xff;
ready_to_send_atapi(channel);
} else {
atapi_cmd_error(channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
raise_interrupt(channel);
}
}
break;
case 0xbe: { // read cd
if (BX_SELECTED_DRIVE(channel).cdrom.ready) {
BX_ERROR(("Read CD with CD present not implemented"));
atapi_cmd_error(channel, SENSE_ILLEGAL_REQUEST, ASC_INV_FIELD_IN_CMD_PACKET);
raise_interrupt(channel);
} else {
atapi_cmd_error(channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
raise_interrupt(channel);
}
}
break;
case 0x43: { // read toc
if (BX_SELECTED_DRIVE(channel).cdrom.ready) {
#ifdef LOWLEVEL_CDROM
bool msf = (BX_SELECTED_CONTROLLER(channel).buffer[1] >> 1) & 1;
uint8 starting_track = BX_SELECTED_CONTROLLER(channel).buffer[6];
#endif
uint16 alloc_length = read_16bit(BX_SELECTED_CONTROLLER(channel).buffer + 7);
uint8 format = (BX_SELECTED_CONTROLLER(channel).buffer[9] >> 6);
int i;
switch (format) {
case 0:
#ifdef LOWLEVEL_CDROM
int toc_length;
if (!(BX_SELECTED_DRIVE(channel).cdrom.cd->read_toc(BX_SELECTED_CONTROLLER(channel).buffer,
&toc_length, msf, starting_track))) {
atapi_cmd_error(channel, SENSE_ILLEGAL_REQUEST,
ASC_INV_FIELD_IN_CMD_PACKET);
raise_interrupt(channel);
} else {
init_send_atapi_command(channel, atapi_command, toc_length, alloc_length);
ready_to_send_atapi(channel);
}
#else
BX_PANIC(("LOWLEVEL_CDROM not defined"));
#endif
break;
case 1:
// multi session stuff. we ignore this and emulate a single session only
init_send_atapi_command(channel, atapi_command, 12, alloc_length);
BX_SELECTED_CONTROLLER(channel).buffer[0] = 0;
BX_SELECTED_CONTROLLER(channel).buffer[1] = 0x0a;
BX_SELECTED_CONTROLLER(channel).buffer[2] = 1;
BX_SELECTED_CONTROLLER(channel).buffer[3] = 1;
for (i = 0; i < 8; i++)
BX_SELECTED_CONTROLLER(channel).buffer[4+i] = 0;
ready_to_send_atapi(channel);
break;
case 2:
default:
BX_PANIC(("(READ TOC) Format %d not supported", format));
break;
}
} else {
atapi_cmd_error(channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
raise_interrupt(channel);
}
}
break;
case 0x28: // read (10)
case 0xa8: // read (12)
{
uint32 transfer_length;
if (atapi_command == 0x28)
transfer_length = read_16bit(BX_SELECTED_CONTROLLER(channel).buffer + 7);
else
transfer_length = read_32bit(BX_SELECTED_CONTROLLER(channel).buffer + 6);
uint32 lba = read_32bit(BX_SELECTED_CONTROLLER(channel).buffer + 2);
if (!BX_SELECTED_DRIVE(channel).cdrom.ready) {
atapi_cmd_error(channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
raise_interrupt(channel);
break;
}
if (transfer_length == 0) {
atapi_cmd_nop(channel);
raise_interrupt(channel);
BX_INFO(("READ(%d) with transfer length 0, ok", atapi_command==0x28?10:12));
break;
}
if (lba + transfer_length > BX_SELECTED_DRIVE(channel).cdrom.capacity) {
atapi_cmd_error(channel, SENSE_ILLEGAL_REQUEST, ASC_LOGICAL_BLOCK_OOR);
raise_interrupt(channel);
break;
}
BX_DEBUG(("cdrom: READ (%d) LBA=%d LEN=%d", atapi_command==0x28?10:12, lba, transfer_length));
// handle command
init_send_atapi_command(channel, atapi_command, transfer_length * 2048,
transfer_length * 2048, true);
BX_SELECTED_DRIVE(channel).cdrom.remaining_blocks = transfer_length;
BX_SELECTED_DRIVE(channel).cdrom.next_lba = lba;
ready_to_send_atapi(channel);
}
break;
case 0x2b: { // seek
uint32 lba = read_32bit(BX_SELECTED_CONTROLLER(channel).buffer + 2);
if (!BX_SELECTED_DRIVE(channel).cdrom.ready) {
atapi_cmd_error(channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
raise_interrupt(channel);
break;
}
if (lba > BX_SELECTED_DRIVE(channel).cdrom.capacity) {
atapi_cmd_error(channel, SENSE_ILLEGAL_REQUEST, ASC_LOGICAL_BLOCK_OOR);
raise_interrupt(channel);
break;
}
BX_INFO(("cdrom: SEEK (ignored)"));
atapi_cmd_nop(channel);
raise_interrupt(channel);
}
break;
case 0x1e: { // prevent/allow medium removal
if (BX_SELECTED_DRIVE(channel).cdrom.ready) {
BX_SELECTED_DRIVE(channel).cdrom.locked = BX_SELECTED_CONTROLLER(channel).buffer[4] & 1;
atapi_cmd_nop(channel);
} else {
atapi_cmd_error(channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
}
raise_interrupt(channel);
}
break;
case 0x42: { // read sub-channel
bool msf = get_packet_field(channel,1, 1, 1);
bool sub_q = get_packet_field(channel,2, 6, 1);
uint8 data_format = get_packet_byte(channel,3);
uint8 track_number = get_packet_byte(channel,6);
uint16 alloc_length = get_packet_word(channel,7);
UNUSED(msf);
UNUSED(data_format);
UNUSED(track_number);
if (!BX_SELECTED_DRIVE(channel).cdrom.ready) {
atapi_cmd_error(channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
raise_interrupt(channel);
} else {
BX_SELECTED_CONTROLLER(channel).buffer[0] = 0;
BX_SELECTED_CONTROLLER(channel).buffer[1] = 0; // audio not supported
BX_SELECTED_CONTROLLER(channel).buffer[2] = 0;
BX_SELECTED_CONTROLLER(channel).buffer[3] = 0;
int ret_len = 4; // header size
if (sub_q) { // !sub_q == header only
BX_ERROR(("Read sub-channel with SubQ not implemented"));
atapi_cmd_error(channel, SENSE_ILLEGAL_REQUEST,
ASC_INV_FIELD_IN_CMD_PACKET);
raise_interrupt(channel);
}
init_send_atapi_command(channel, atapi_command, ret_len, alloc_length);
ready_to_send_atapi(channel);
}
}
break;
case 0x51: { // read disc info
// no-op to keep the Linux CD-ROM driver happy
atapi_cmd_error(channel, SENSE_ILLEGAL_REQUEST, ASC_INV_FIELD_IN_CMD_PACKET);
raise_interrupt(channel);
}
break;
case 0x55: // mode select
case 0xa6: // load/unload cd
case 0x4b: // pause/resume
case 0x45: // play audio
case 0x47: // play audio msf
case 0xbc: // play cd
case 0xb9: // read cd msf
case 0x44: // read header
case 0xba: // scan
case 0xbb: // set cd speed
case 0x4e: // stop play/scan
case 0x46: // ???
case 0x4a: // ???
BX_ERROR(("ATAPI command 0x%x not implemented yet",
atapi_command));
atapi_cmd_error(channel, SENSE_ILLEGAL_REQUEST, ASC_INV_FIELD_IN_CMD_PACKET);
raise_interrupt(channel);
break;
default:
BX_PANIC(("Unknown ATAPI command 0x%x (%d)",
atapi_command, atapi_command));
// We'd better signal the error if the user chose to continue
atapi_cmd_error(channel, SENSE_ILLEGAL_REQUEST, ASC_INV_FIELD_IN_CMD_PACKET);
raise_interrupt(channel);
break;
}
}
break;
default:
BX_PANIC(("IO write(0x%04x): current command is %02xh", address,
(unsigned) BX_SELECTED_CONTROLLER(channel).current_command));
}
break;
case 0x01: // hard disk write precompensation 0x1f1
WRITE_FEATURES(channel,value);
if (bx_dbg.disk || (BX_SELECTED_IS_CD(channel) && bx_dbg.cdrom)) {
if (value == 0xff)
BX_INFO(("no precompensation {%s}", BX_SELECTED_TYPE_STRING(channel)));
else
BX_INFO(("precompensation value %02x {%s}", (unsigned) value, BX_SELECTED_TYPE_STRING(channel)));
}
break;
case 0x02: // hard disk sector count 0x1f2
WRITE_SECTOR_COUNT(channel,value);
if (bx_dbg.disk || (BX_SELECTED_IS_CD(channel) && bx_dbg.cdrom))
BX_INFO(("sector count = %u {%s}", (unsigned) value, BX_SELECTED_TYPE_STRING(channel)));
break;
case 0x03: // hard disk sector number 0x1f3
WRITE_SECTOR_NUMBER(channel,value);
if (bx_dbg.disk || (BX_SELECTED_IS_CD(channel) && bx_dbg.cdrom))
BX_INFO(("sector number = %u {%s}", (unsigned) value, BX_SELECTED_TYPE_STRING(channel)));
break;
case 0x04: // hard disk cylinder low 0x1f4
WRITE_CYLINDER_LOW(channel,value);
if (bx_dbg.disk || (BX_SELECTED_IS_CD(channel) && bx_dbg.cdrom))
BX_INFO(("cylinder low = %02xh {%s}", (unsigned) value, BX_SELECTED_TYPE_STRING(channel)));
break;
case 0x05: // hard disk cylinder high 0x1f5
WRITE_CYLINDER_HIGH(channel,value);
if (bx_dbg.disk || (BX_SELECTED_IS_CD(channel) && bx_dbg.cdrom))
BX_INFO(("cylinder high = %02xh {%s}", (unsigned) value, BX_SELECTED_TYPE_STRING(channel)));
break;
case 0x06: // hard disk drive and head register 0x1f6
// b7 Extended data field for ECC
// b6/b5: Used to be sector size. 00=256,01=512,10=1024,11=128
// Since 512 was always used, bit 6 was taken to mean LBA mode:
// b6 1=LBA mode, 0=CHS mode
// b5 1
// b4: DRV
// b3..0 HD3..HD0
{
if ( (value & 0xa0) != 0xa0 ) // 1x1xxxxx
BX_INFO(("IO write 0x%04x (%02x): not 1x1xxxxxb", address, (unsigned) value));
Bit32u drvsel = BX_HD_THIS channels[channel].drive_select = (value >> 4) & 0x01;
WRITE_HEAD_NO(channel,value & 0xf);
if (BX_SELECTED_CONTROLLER(channel).lba_mode == 0 && ((value >> 6) & 1) == 1)
BX_DEBUG(("enabling LBA mode"));
WRITE_LBA_MODE(channel,(value >> 6) & 1);
if (!BX_SELECTED_IS_PRESENT(channel)) {
BX_ERROR (("device set to %d which does not exist",drvsel));
BX_SELECTED_CONTROLLER(channel).error_register = 0x04; // aborted
BX_SELECTED_CONTROLLER(channel).status.err = 1;
}
break;
}
case 0x07: // hard disk command 0x1f7
// (mch) Writes to the command register with drive_select != 0
// are ignored if no secondary device is present
if ((BX_SLAVE_SELECTED(channel)) && (!BX_SLAVE_IS_PRESENT(channel)))
break;
// Writes to the command register clear the IRQ
DEV_pic_lower_irq(BX_HD_THIS channels[channel].irq);
if (BX_SELECTED_CONTROLLER(channel).status.busy)
BX_PANIC(("hard disk: command sent, controller BUSY"));
if ( (value & 0xf0) == 0x10 )
value = 0x10;
switch (value) {
case 0x10: // CALIBRATE DRIVE
if (!BX_SELECTED_IS_HD(channel))
BX_PANIC(("calibrate drive issued to non-disk"));
if (!BX_SELECTED_IS_PRESENT(channel)) {
BX_SELECTED_CONTROLLER(channel).error_register = 0x02; // Track 0 not found
BX_SELECTED_CONTROLLER(channel).status.busy = 0;
BX_SELECTED_CONTROLLER(channel).status.drive_ready = 1;
BX_SELECTED_CONTROLLER(channel).status.seek_complete = 0;
BX_SELECTED_CONTROLLER(channel).status.drq = 0;
BX_SELECTED_CONTROLLER(channel).status.err = 1;
raise_interrupt(channel);
BX_INFO(("calibrate drive: disk ata%d-%d not present", channel, BX_SLAVE_SELECTED(channel)));
break;
}
/* move head to cylinder 0, issue IRQ */
BX_SELECTED_CONTROLLER(channel).error_register = 0;
BX_SELECTED_CONTROLLER(channel).cylinder_no = 0;
BX_SELECTED_CONTROLLER(channel).status.busy = 0;
BX_SELECTED_CONTROLLER(channel).status.drive_ready = 1;
BX_SELECTED_CONTROLLER(channel).status.seek_complete = 1;
BX_SELECTED_CONTROLLER(channel).status.drq = 0;
BX_SELECTED_CONTROLLER(channel).status.err = 0;
raise_interrupt(channel);
break;
case 0x20: // READ MULTIPLE SECTORS, with retries
case 0x21: // READ MULTIPLE SECTORS, without retries
/* update sector_no, always points to current sector
* after each sector is read to buffer, DRQ bit set and issue IRQ
* if interrupt handler transfers all data words into main memory,
* and more sectors to read, then set BSY bit again, clear DRQ and
* read next sector into buffer
* sector count of 0 means 256 sectors
*/
if (!BX_SELECTED_IS_HD(channel)) {
BX_ERROR(("read multiple issued to non-disk"));
command_aborted(channel, value);
break;
}
BX_SELECTED_CONTROLLER(channel).current_command = value;
// Lose98 accesses 0/0/0 in CHS mode
if (!BX_SELECTED_CONTROLLER(channel).lba_mode &&
!BX_SELECTED_CONTROLLER(channel).head_no &&
!BX_SELECTED_CONTROLLER(channel).cylinder_no &&
!BX_SELECTED_CONTROLLER(channel).sector_no) {
BX_INFO(("Read from 0/0/0, aborting command"));
command_aborted(channel, value);
break;
}
#if TEST_READ_BEYOND_END==2
BX_SELECTED_CONTROLLER(channel).cylinder_no += 100000;
#endif
if (!calculate_logical_address(channel, &logical_sector)) {
BX_ERROR(("initial read from sector %lu out of bounds, aborting", (unsigned long)logical_sector));
command_aborted(channel, value);
break;
}
#if TEST_READ_BEYOND_END==3
logical_sector += 100000;
#endif
ret=BX_SELECTED_DRIVE(channel).hard_drive->lseek(logical_sector * 512, SEEK_SET);
if (ret < 0) {
BX_ERROR (("could not lseek() hard drive image file, aborting"));
command_aborted(channel, value);
break;
}
ret = BX_SELECTED_DRIVE(channel).hard_drive->read((bx_ptr_t) BX_SELECTED_CONTROLLER(channel).buffer, 512);
if (ret < 512) {
BX_ERROR(("logical sector was %lu", (unsigned long)logical_sector));
BX_ERROR(("could not read() hard drive image file at byte %lu", (unsigned long)logical_sector*512));
command_aborted(channel, value);
break;
}
BX_SELECTED_CONTROLLER(channel).error_register = 0;
BX_SELECTED_CONTROLLER(channel).status.busy = 0;
BX_SELECTED_CONTROLLER(channel).status.drive_ready = 1;
BX_SELECTED_CONTROLLER(channel).status.seek_complete = 1;
BX_SELECTED_CONTROLLER(channel).status.drq = 1;
BX_SELECTED_CONTROLLER(channel).status.corrected_data = 0;
BX_SELECTED_CONTROLLER(channel).status.err = 0;
BX_SELECTED_CONTROLLER(channel).buffer_index = 0;
raise_interrupt(channel);
break;
case 0x30: /* WRITE SECTORS, with retries */
/* update sector_no, always points to current sector
* after each sector is read to buffer, DRQ bit set and issue IRQ
* if interrupt handler transfers all data words into main memory,
* and more sectors to read, then set BSY bit again, clear DRQ and
* read next sector into buffer
* sector count of 0 means 256 sectors
*/
if (!BX_SELECTED_IS_HD(channel))
BX_PANIC(("write multiple issued to non-disk"));
if (BX_SELECTED_CONTROLLER(channel).status.busy) {
BX_PANIC(("write command: BSY bit set"));
}
BX_SELECTED_CONTROLLER(channel).current_command = value;
// implicit seek done :^)
BX_SELECTED_CONTROLLER(channel).error_register = 0;
BX_SELECTED_CONTROLLER(channel).status.busy = 0;
// BX_SELECTED_CONTROLLER(channel).status.drive_ready = 1;
BX_SELECTED_CONTROLLER(channel).status.seek_complete = 1;
BX_SELECTED_CONTROLLER(channel).status.drq = 1;
BX_SELECTED_CONTROLLER(channel).status.err = 0;
BX_SELECTED_CONTROLLER(channel).buffer_index = 0;
break;
case 0x90: // EXECUTE DEVICE DIAGNOSTIC
if (BX_SELECTED_CONTROLLER(channel).status.busy) {
BX_PANIC(("diagnostic command: BSY bit set"));
}
if (!BX_SELECTED_IS_HD(channel))
BX_PANIC(("drive diagnostics issued to non-disk"));
BX_SELECTED_CONTROLLER(channel).error_register = 0x81; // Drive 1 failed, no error on drive 0
// BX_SELECTED_CONTROLLER(channel).status.busy = 0; // not needed
BX_SELECTED_CONTROLLER(channel).status.drq = 0;
BX_SELECTED_CONTROLLER(channel).status.err = 0;
break;
case 0x91: // INITIALIZE DRIVE PARAMETERS
if (BX_SELECTED_CONTROLLER(channel).status.busy) {
BX_PANIC(("init drive parameters command: BSY bit set"));
}
if (!BX_SELECTED_IS_HD(channel))
BX_PANIC(("initialize drive parameters issued to non-disk"));
// sets logical geometry of specified drive
BX_DEBUG(("init drive params: sec=%u, drive sel=%u, head=%u",
(unsigned) BX_SELECTED_CONTROLLER(channel).sector_count,
(unsigned) BX_HD_THIS channels[channel].drive_select,
(unsigned) BX_SELECTED_CONTROLLER(channel).head_no));
if (!BX_SELECTED_IS_PRESENT(channel)) {
BX_PANIC(("init drive params: disk ata%d-%d not present", channel, BX_SLAVE_SELECTED(channel)));
//BX_SELECTED_CONTROLLER(channel).error_register = 0x12;
BX_SELECTED_CONTROLLER(channel).status.busy = 0;
BX_SELECTED_CONTROLLER(channel).status.drive_ready = 1;
BX_SELECTED_CONTROLLER(channel).status.drq = 0;
BX_SELECTED_CONTROLLER(channel).status.err = 0;
raise_interrupt(channel);
break;
}
if (BX_SELECTED_CONTROLLER(channel).sector_count != BX_SELECTED_DRIVE(channel).hard_drive->sectors)
BX_PANIC(("init drive params: sector count doesnt match %d!=%d", BX_SELECTED_CONTROLLER(channel).sector_count, BX_SELECTED_DRIVE(channel).hard_drive->sectors));
if ( BX_SELECTED_CONTROLLER(channel).head_no != (BX_SELECTED_DRIVE(channel).hard_drive->heads-1) )
BX_PANIC(("init drive params: head number doesn't match %d != %d",BX_SELECTED_CONTROLLER(channel).head_no, BX_SELECTED_DRIVE(channel).hard_drive->heads-1));
BX_SELECTED_CONTROLLER(channel).status.busy = 0;
BX_SELECTED_CONTROLLER(channel).status.drive_ready = 1;
BX_SELECTED_CONTROLLER(channel).status.drq = 0;
BX_SELECTED_CONTROLLER(channel).status.err = 0;
raise_interrupt(channel);
break;
case 0xec: // IDENTIFY DEVICE
if (bx_options.OnewHardDriveSupport->get ()) {
if (bx_dbg.disk || (BX_SELECTED_IS_CD(channel) && bx_dbg.cdrom))
BX_INFO(("Drive ID Command issued : 0xec "));
if (!BX_SELECTED_IS_PRESENT(channel)) {
BX_INFO(("disk ata%d-%d not present, aborting",channel,BX_SLAVE_SELECTED(channel)));
command_aborted(channel, value);
break;
}
if (BX_SELECTED_IS_CD(channel)) {
BX_SELECTED_CONTROLLER(channel).head_no = 0;
BX_SELECTED_CONTROLLER(channel).sector_count = 1;
BX_SELECTED_CONTROLLER(channel).sector_no = 1;
BX_SELECTED_CONTROLLER(channel).cylinder_no = 0xeb14;
command_aborted(channel, 0xec);
} else {
BX_SELECTED_CONTROLLER(channel).current_command = value;
BX_SELECTED_CONTROLLER(channel).error_register = 0;
// See ATA/ATAPI-4, 8.12
BX_SELECTED_CONTROLLER(channel).status.busy = 0;
BX_SELECTED_CONTROLLER(channel).status.drive_ready = 1;
BX_SELECTED_CONTROLLER(channel).status.write_fault = 0;
BX_SELECTED_CONTROLLER(channel).status.drq = 1;
BX_SELECTED_CONTROLLER(channel).status.err = 0;
BX_SELECTED_CONTROLLER(channel).status.seek_complete = 1;
BX_SELECTED_CONTROLLER(channel).status.corrected_data = 0;
BX_SELECTED_CONTROLLER(channel).buffer_index = 0;
raise_interrupt(channel);
identify_drive(channel);
}
}
else {
BX_INFO(("sent IDENTIFY DEVICE (0xec) to old hard drive"));
command_aborted(channel, value);
}
break;
case 0xef: // SET FEATURES
switch(BX_SELECTED_CONTROLLER(channel).features) {
case 0x02: // Enable and
case 0x82: // Disable write cache.
case 0xAA: // Enable and
case 0x55: // Disable look-ahead cache.
case 0xCC: // Enable and
case 0x66: // Disable reverting to power-on default
BX_INFO(("SET FEATURES subcommand 0x%02x not supported by disk.", (unsigned) BX_SELECTED_CONTROLLER(channel).features));
command_aborted(channel, value);
break;
default:
BX_PANIC(("SET FEATURES with unknown subcommand: 0x%02x", (unsigned) BX_SELECTED_CONTROLLER(channel).features ));
// We'd better signal the error if the user chose to continue
command_aborted(channel, value);
}
break;
case 0x40: // READ VERIFY SECTORS
if (bx_options.OnewHardDriveSupport->get ()) {
if (!BX_SELECTED_IS_HD(channel))
BX_PANIC(("read verify issued to non-disk"));
BX_INFO(("Verify Command : 0x40 ! "));
BX_SELECTED_CONTROLLER(channel).status.busy = 0;
BX_SELECTED_CONTROLLER(channel).status.drive_ready = 1;
BX_SELECTED_CONTROLLER(channel).status.drq = 0;
BX_SELECTED_CONTROLLER(channel).status.err = 0;
raise_interrupt(channel);
}
else {
BX_INFO(("sent READ VERIFY SECTORS (0x40) to old hard drive"));
command_aborted(channel, value);
}
break;
case 0xc6: // SET MULTIPLE MODE (mch)
if (BX_SELECTED_CONTROLLER(channel).sector_count != 128 &&
BX_SELECTED_CONTROLLER(channel).sector_count != 64 &&
BX_SELECTED_CONTROLLER(channel).sector_count != 32 &&
BX_SELECTED_CONTROLLER(channel).sector_count != 16 &&
BX_SELECTED_CONTROLLER(channel).sector_count != 8 &&
BX_SELECTED_CONTROLLER(channel).sector_count != 4 &&
BX_SELECTED_CONTROLLER(channel).sector_count != 2)
command_aborted(channel, value);
if (!BX_SELECTED_IS_HD(channel))
BX_PANIC(("set multiple mode issued to non-disk"));
BX_SELECTED_CONTROLLER(channel).sectors_per_block = BX_SELECTED_CONTROLLER(channel).sector_count;
BX_SELECTED_CONTROLLER(channel).status.busy = 0;
BX_SELECTED_CONTROLLER(channel).status.drive_ready = 1;
BX_SELECTED_CONTROLLER(channel).status.write_fault = 0;
BX_SELECTED_CONTROLLER(channel).status.drq = 0;
BX_SELECTED_CONTROLLER(channel).status.err = 0;
break;
// ATAPI commands
case 0xa1: // IDENTIFY PACKET DEVICE
if (BX_SELECTED_IS_CD(channel)) {
BX_SELECTED_CONTROLLER(channel).current_command = value;
BX_SELECTED_CONTROLLER(channel).error_register = 0;
BX_SELECTED_CONTROLLER(channel).status.busy = 0;
BX_SELECTED_CONTROLLER(channel).status.drive_ready = 1;
BX_SELECTED_CONTROLLER(channel).status.write_fault = 0;
BX_SELECTED_CONTROLLER(channel).status.drq = 1;
BX_SELECTED_CONTROLLER(channel).status.err = 0;
BX_SELECTED_CONTROLLER(channel).status.seek_complete = 1;
BX_SELECTED_CONTROLLER(channel).status.corrected_data = 0;
BX_SELECTED_CONTROLLER(channel).buffer_index = 0;
raise_interrupt(channel);
identify_ATAPI_drive(channel);
} else {
command_aborted(channel, 0xa1);
}
break;
case 0x08: // DEVICE RESET (atapi)
if (BX_SELECTED_IS_CD(channel)) {
BX_SELECTED_CONTROLLER(channel).status.busy = 1;
BX_SELECTED_CONTROLLER(channel).error_register &= ~(1 << 7);
// device signature
BX_SELECTED_CONTROLLER(channel).head_no = 0;
BX_SELECTED_CONTROLLER(channel).sector_count = 1;
BX_SELECTED_CONTROLLER(channel).sector_no = 1;
BX_SELECTED_CONTROLLER(channel).cylinder_no = 0xeb14;
BX_SELECTED_CONTROLLER(channel).status.write_fault = 0;
BX_SELECTED_CONTROLLER(channel).status.drq = 0;
BX_SELECTED_CONTROLLER(channel).status.corrected_data = 0;
BX_SELECTED_CONTROLLER(channel).status.err = 0;
BX_SELECTED_CONTROLLER(channel).status.busy = 0;
} else {
BX_DEBUG(("ATAPI Device Reset on non-cd device"));
command_aborted(channel, 0x08);
}
break;
case 0xa0: // SEND PACKET (atapi)
if (BX_SELECTED_IS_CD(channel)) {
// PACKET
if (BX_SELECTED_CONTROLLER(channel).features & (1 << 0))
BX_PANIC(("PACKET-DMA not supported"));
if (BX_SELECTED_CONTROLLER(channel).features & (1 << 1))
BX_PANIC(("PACKET-overlapped not supported"));
// We're already ready!
BX_SELECTED_CONTROLLER(channel).sector_count = 1;
BX_SELECTED_CONTROLLER(channel).status.busy = 0;
BX_SELECTED_CONTROLLER(channel).status.write_fault = 0;
// serv bit??
BX_SELECTED_CONTROLLER(channel).status.drq = 1;
BX_SELECTED_CONTROLLER(channel).status.err = 0;
// NOTE: no interrupt here
BX_SELECTED_CONTROLLER(channel).current_command = value;
BX_SELECTED_CONTROLLER(channel).buffer_index = 0;
} else {
command_aborted (channel, 0xa0);
}
break;
case 0xa2: // SERVICE (atapi), optional
if (BX_SELECTED_IS_CD(channel)) {
BX_PANIC(("ATAPI SERVICE not implemented"));
} else {
command_aborted (channel, 0xa2);
}
break;
// power management
case 0xe5: // CHECK POWER MODE
BX_SELECTED_CONTROLLER(channel).status.busy = 0;
BX_SELECTED_CONTROLLER(channel).status.drive_ready = 1;
BX_SELECTED_CONTROLLER(channel).status.write_fault = 0;
BX_SELECTED_CONTROLLER(channel).status.drq = 0;
BX_SELECTED_CONTROLLER(channel).status.err = 0;
BX_SELECTED_CONTROLLER(channel).sector_count = 0xff; // Active or Idle mode
raise_interrupt(channel);
break;
case 0x70: // SEEK (cgs)
if (BX_SELECTED_IS_HD(channel)) {
BX_DEBUG(("write cmd 0x70 (SEEK) executing"));
if (!calculate_logical_address(channel, &logical_sector)) {
BX_ERROR(("initial seek to sector %lu out of bounds, aborting", (unsigned long)logical_sector));
command_aborted(channel, value);
break;
}
BX_SELECTED_CONTROLLER(channel).error_register = 0;
BX_SELECTED_CONTROLLER(channel).status.busy = 0;
BX_SELECTED_CONTROLLER(channel).status.drive_ready = 1;
BX_SELECTED_CONTROLLER(channel).status.seek_complete = 1;
BX_SELECTED_CONTROLLER(channel).status.drq = 0;
BX_SELECTED_CONTROLLER(channel).status.corrected_data = 0;
BX_SELECTED_CONTROLLER(channel).status.err = 0;
BX_SELECTED_CONTROLLER(channel).buffer_index = 0;
BX_DEBUG(("s[0].controller.control.disable_irq = %02x", (BX_HD_THIS channels[channel].drives[0]).controller.control.disable_irq));
BX_DEBUG(("s[1].controller.control.disable_irq = %02x", (BX_HD_THIS channels[channel].drives[1]).controller.control.disable_irq));
BX_DEBUG(("SEEK completed. error_register = %02x", BX_SELECTED_CONTROLLER(channel).error_register));
raise_interrupt(channel);
BX_DEBUG(("SEEK interrupt completed"));
} else {
BX_ERROR(("write cmd 0x70 (SEEK) not supported for non-disk"));
command_aborted(channel, 0x70);
}
break;
// List all the write operations that are defined in the ATA/ATAPI spec
// that we don't support. Commands that are listed here will cause a
// BX_ERROR, which is non-fatal, and the command will be aborted.
case 0x22: BX_ERROR(("write cmd 0x22 (READ LONG) not supported")); command_aborted(channel, 0x22); break;
case 0x23: BX_ERROR(("write cmd 0x23 (READ LONG NO RETRY) not supported")); command_aborted(channel, 0x23); break;
case 0x24: BX_ERROR(("write cmd 0x24 (READ SECTORS EXT) not supported"));command_aborted(channel, 0x24); break;
case 0x25: BX_ERROR(("write cmd 0x25 (READ DMA EXT) not supported"));command_aborted(channel, 0x25); break;
case 0x26: BX_ERROR(("write cmd 0x26 (READ DMA QUEUED EXT) not supported"));command_aborted(channel, 0x26); break;
case 0x27: BX_ERROR(("write cmd 0x27 (READ NATIVE MAX ADDRESS EXT) not supported"));command_aborted(channel, 0x27); break;
case 0x29: BX_ERROR(("write cmd 0x29 (READ MULTIPLE EXT) not supported"));command_aborted(channel, 0x29); break;
case 0x2A: BX_ERROR(("write cmd 0x2A (READ STREAM DMA) not supported"));command_aborted(channel, 0x2A); break;
case 0x2B: BX_ERROR(("write cmd 0x2B (READ STREAM PIO) not supported"));command_aborted(channel, 0x2B); break;
case 0x2F: BX_ERROR(("write cmd 0x2F (READ LOG EXT) not supported"));command_aborted(channel, 0x2F); break;
case 0x31: BX_ERROR(("write cmd 0x31 (WRITE SECTORS NO RETRY) not supported")); command_aborted(channel, 0x31); break;
case 0x32: BX_ERROR(("write cmd 0x32 (WRITE LONG) not supported")); command_aborted(channel, 0x32); break;
case 0x33: BX_ERROR(("write cmd 0x33 (WRITE LONG NO RETRY) not supported")); command_aborted(channel, 0x33); break;
case 0x34: BX_ERROR(("write cmd 0x34 (WRITE SECTORS EXT) not supported"));command_aborted(channel, 0x34); break;
case 0x35: BX_ERROR(("write cmd 0x35 (WRITE DMA EXT) not supported"));command_aborted(channel, 0x35); break;
case 0x36: BX_ERROR(("write cmd 0x36 (WRITE DMA QUEUED EXT) not supported"));command_aborted(channel, 0x36); break;
case 0x37: BX_ERROR(("write cmd 0x37 (SET MAX ADDRESS EXT) not supported"));command_aborted(channel, 0x37); break;
case 0x38: BX_ERROR(("write cmd 0x38 (CFA WRITE SECTORS W/OUT ERASE) not supported"));command_aborted(channel, 0x38); break;
case 0x39: BX_ERROR(("write cmd 0x39 (WRITE MULTIPLE EXT) not supported"));command_aborted(channel, 0x39); break;
case 0x3A: BX_ERROR(("write cmd 0x3A (WRITE STREAM DMA) not supported"));command_aborted(channel, 0x3A); break;
case 0x3B: BX_ERROR(("write cmd 0x3B (WRITE STREAM PIO) not supported"));command_aborted(channel, 0x3B); break;
case 0x3F: BX_ERROR(("write cmd 0x3F (WRITE LOG EXT) not supported"));command_aborted(channel, 0x3F); break;
case 0x41: BX_ERROR(("write cmd 0x41 (READ VERIFY SECTORS NO RETRY) not supported")); command_aborted(channel, 0x41); break;
case 0x42: BX_ERROR(("write cmd 0x42 (READ VERIFY SECTORS EXT) not supported"));command_aborted(channel, 0x42); break;
case 0x50: BX_ERROR(("write cmd 0x50 (FORMAT TRACK) not supported")); command_aborted(channel, 0x50); break;
case 0x51: BX_ERROR(("write cmd 0x51 (CONFIGURE STREAM) not supported"));command_aborted(channel, 0x51); break;
case 0x87: BX_ERROR(("write cmd 0x87 (CFA TRANSLATE SECTOR) not supported"));command_aborted(channel, 0x87); break;
case 0x92: BX_ERROR(("write cmd 0x92 (DOWNLOAD MICROCODE) not supported"));command_aborted(channel, 0x92); break;
case 0x94: BX_ERROR(("write cmd 0x94 (STANDBY IMMEDIATE) not supported")); command_aborted(channel, 0x94); break;
case 0x95: BX_ERROR(("write cmd 0x95 (IDLE IMMEDIATE) not supported")); command_aborted(channel, 0x95); break;
case 0x96: BX_ERROR(("write cmd 0x96 (STANDBY) not supported")); command_aborted(channel, 0x96); break;
case 0x97: BX_ERROR(("write cmd 0x97 (IDLE) not supported")); command_aborted(channel, 0x97); break;
case 0x98: BX_ERROR(("write cmd 0x98 (CHECK POWER MODE) not supported")); command_aborted(channel, 0x98); break;
case 0x99: BX_ERROR(("write cmd 0x99 (SLEEP) not supported")); command_aborted(channel, 0x99); break;
case 0xB0: BX_ERROR(("write cmd 0xB0 (SMART commands) not supported"));command_aborted(channel, 0xB0); break;
case 0xB1: BX_ERROR(("write cmd 0xB1 (DEVICE CONFIGURATION commands) not supported"));command_aborted(channel, 0xB1); break;
case 0xC0: BX_ERROR(("write cmd 0xC0 (CFA ERASE SECTORS) not supported"));command_aborted(channel, 0xC0); break;
case 0xC4: BX_ERROR(("write cmd 0xC4 (READ MULTIPLE) not supported"));command_aborted(channel, 0xC4); break;
case 0xC5: BX_ERROR(("write cmd 0xC5 (WRITE MULTIPLE) not supported"));command_aborted(channel, 0xC5); break;
case 0xC7: BX_ERROR(("write cmd 0xC7 (READ DMA QUEUED) not supported"));command_aborted(channel, 0xC7); break;
case 0xC8: BX_ERROR(("write cmd 0xC8 (READ DMA) not supported"));command_aborted(channel, 0xC8); break;
case 0xC9: BX_ERROR(("write cmd 0xC9 (READ DMA NO RETRY) not supported")); command_aborted(channel, 0xC9); break;
case 0xCA: BX_ERROR(("write cmd 0xCA (WRITE DMA) not supported"));command_aborted(channel, 0xCA); break;
case 0xCC: BX_ERROR(("write cmd 0xCC (WRITE DMA QUEUED) not supported"));command_aborted(channel, 0xCC); break;
case 0xCD: BX_ERROR(("write cmd 0xCD (CFA WRITE MULTIPLE W/OUT ERASE) not supported"));command_aborted(channel, 0xCD); break;
case 0xD1: BX_ERROR(("write cmd 0xD1 (CHECK MEDIA CARD TYPE) not supported"));command_aborted(channel, 0xD1); break;
case 0xDA: BX_ERROR(("write cmd 0xDA (GET MEDIA STATUS) not supported"));command_aborted(channel, 0xDA); break;
case 0xDE: BX_ERROR(("write cmd 0xDE (MEDIA LOCK) not supported"));command_aborted(channel, 0xDE); break;
case 0xDF: BX_ERROR(("write cmd 0xDF (MEDIA UNLOCK) not supported"));command_aborted(channel, 0xDF); break;
case 0xE0: BX_ERROR(("write cmd 0xE0 (STANDBY IMMEDIATE) not supported"));command_aborted(channel, 0xE0); break;
case 0xE1: BX_ERROR(("write cmd 0xE1 (IDLE IMMEDIATE) not supported"));command_aborted(channel, 0xE1); break;
case 0xE2: BX_ERROR(("write cmd 0xE2 (STANDBY) not supported"));command_aborted(channel, 0xE2); break;
case 0xE3: BX_ERROR(("write cmd 0xE3 (IDLE) not supported"));command_aborted(channel, 0xE3); break;
case 0xE4: BX_ERROR(("write cmd 0xE4 (READ BUFFER) not supported"));command_aborted(channel, 0xE4); break;
case 0xE6: BX_ERROR(("write cmd 0xE6 (SLEEP) not supported"));command_aborted(channel, 0xE6); break;
case 0xE7: BX_ERROR(("write cmd 0xE7 (FLUSH CACHE) not supported"));command_aborted(channel, 0xE7); break;
case 0xE8: BX_ERROR(("write cmd 0xE8 (WRITE BUFFER) not supported"));command_aborted(channel, 0xE8); break;
case 0xEA: BX_ERROR(("write cmd 0xEA (FLUSH CACHE EXT) not supported"));command_aborted(channel, 0xEA); break;
case 0xED: BX_ERROR(("write cmd 0xED (MEDIA EJECT) not supported"));command_aborted(channel, 0xED); break;
case 0xF1: BX_ERROR(("write cmd 0xF1 (SECURITY SET PASSWORD) not supported"));command_aborted(channel, 0xF1); break;
case 0xF2: BX_ERROR(("write cmd 0xF2 (SECURITY UNLOCK) not supported"));command_aborted(channel, 0xF2); break;
case 0xF3: BX_ERROR(("write cmd 0xF3 (SECURITY ERASE PREPARE) not supported"));command_aborted(channel, 0xF3); break;
case 0xF4: BX_ERROR(("write cmd 0xF4 (SECURITY ERASE UNIT) not supported"));command_aborted(channel, 0xF4); break;
case 0xF5: BX_ERROR(("write cmd 0xF5 (SECURITY FREEZE LOCK) not supported"));command_aborted(channel, 0xF5); break;
case 0xF6: BX_ERROR(("write cmd 0xF6 (SECURITY DISABLE PASSWORD) not supported"));command_aborted(channel, 0xF6); break;
case 0xF8: BX_ERROR(("write cmd 0xF8 (READ NATIVE MAX ADDRESS) not supported"));command_aborted(channel, 0xF8); break;
case 0xF9: BX_ERROR(("write cmd 0xF9 (SET MAX ADDRESS) not supported"));command_aborted(channel, 0xF9); break;
default:
BX_PANIC(("IO write(0x%04x): command 0x%02x", address, (unsigned) value));
// if user foolishly decides to continue, abort the command
// so that the software knows the drive didn't understand it.
command_aborted(channel, value);
}
break;
case 0x16: // hard disk adapter control 0x3f6
// (mch) Even if device 1 was selected, a write to this register
// goes to device 0 (if device 1 is absent)
prev_control_reset = BX_SELECTED_CONTROLLER(channel).control.reset;
BX_HD_THIS channels[channel].drives[0].controller.control.reset = value & 0x04;
BX_HD_THIS channels[channel].drives[1].controller.control.reset = value & 0x04;
// CGS: was: BX_SELECTED_CONTROLLER(channel).control.disable_irq = value & 0x02;
BX_HD_THIS channels[channel].drives[0].controller.control.disable_irq = value & 0x02;
BX_HD_THIS channels[channel].drives[1].controller.control.disable_irq = value & 0x02;
BX_DEBUG(( "adpater control reg: reset controller = %d",
(unsigned) (BX_SELECTED_CONTROLLER(channel).control.reset) ? 1 : 0 ));
BX_DEBUG(( "adpater control reg: disable_irq(X) = %d",
(unsigned) (BX_SELECTED_CONTROLLER(channel).control.disable_irq) ? 1 : 0 ));
if (!prev_control_reset && BX_SELECTED_CONTROLLER(channel).control.reset) {
// transition from 0 to 1 causes all drives to reset
BX_DEBUG(("hard drive: RESET"));
// (mch) Set BSY, drive not ready
for (int id = 0; id < 2; id++) {
BX_CONTROLLER(channel,id).status.busy = 1;
BX_CONTROLLER(channel,id).status.drive_ready = 0;
BX_CONTROLLER(channel,id).reset_in_progress = 1;
BX_CONTROLLER(channel,id).status.write_fault = 0;
BX_CONTROLLER(channel,id).status.seek_complete = 1;
BX_CONTROLLER(channel,id).status.drq = 0;
BX_CONTROLLER(channel,id).status.corrected_data = 0;
BX_CONTROLLER(channel,id).status.err = 0;
BX_CONTROLLER(channel,id).error_register = 0x01; // diagnostic code: no error
BX_CONTROLLER(channel,id).current_command = 0x00;
BX_CONTROLLER(channel,id).buffer_index = 0;
BX_CONTROLLER(channel,id).sectors_per_block = 0x80;
BX_CONTROLLER(channel,id).lba_mode = 0;
BX_CONTROLLER(channel,id).control.disable_irq = 0;
DEV_pic_lower_irq(BX_HD_THIS channels[channel].irq);
}
} else if (BX_SELECTED_CONTROLLER(channel).reset_in_progress &&
!BX_SELECTED_CONTROLLER(channel).control.reset) {
// Clear BSY and DRDY
BX_DEBUG(("Reset complete {%s}", BX_SELECTED_TYPE_STRING(channel)));
for (int id = 0; id < 2; id++) {
BX_CONTROLLER(channel,id).status.busy = 0;
BX_CONTROLLER(channel,id).status.drive_ready = 1;
BX_CONTROLLER(channel,id).reset_in_progress = 0;
// Device signature
if (BX_DRIVE_IS_HD(channel,id)) {
BX_CONTROLLER(channel,id).head_no = 0;
BX_CONTROLLER(channel,id).sector_count = 1;
BX_CONTROLLER(channel,id).sector_no = 1;
BX_CONTROLLER(channel,id).cylinder_no = 0;
} else {
BX_CONTROLLER(channel,id).head_no = 0;
BX_CONTROLLER(channel,id).sector_count = 1;
BX_CONTROLLER(channel,id).sector_no = 1;
BX_CONTROLLER(channel,id).cylinder_no = 0xeb14;
}
}
}
BX_DEBUG(("s[0].controller.control.disable_irq = %02x", (BX_HD_THIS channels[channel].drives[0]).controller.control.disable_irq));
BX_DEBUG(("s[1].controller.control.disable_irq = %02x", (BX_HD_THIS channels[channel].drives[1]).controller.control.disable_irq));
break;
default:
BX_PANIC(("hard drive: io write to address %x = %02x",
(unsigned) address, (unsigned) value));
}
}
void
bx_hard_drive_c::close_harddrive(void)
{
for (Bit8u channel=0; channel<BX_MAX_ATA_CHANNEL; channel++) {
if(BX_HD_THIS channels[channel].drives[0].hard_drive != NULL)
BX_HD_THIS channels[channel].drives[0].hard_drive->close();
if(BX_HD_THIS channels[channel].drives[1].hard_drive != NULL)
BX_HD_THIS channels[channel].drives[1].hard_drive->close();
}
}
bx_bool BX_CPP_AttrRegparmN(2)
bx_hard_drive_c::calculate_logical_address(Bit8u channel, off_t *sector)
{
off_t logical_sector;
if (BX_SELECTED_CONTROLLER(channel).lba_mode) {
//bx_printf ("disk: calculate: %d %d %d\n", ((Bit32u)BX_SELECTED_CONTROLLER(channel).head_no), ((Bit32u)BX_SELECTED_CONTROLLER(channel).cylinder_no), (Bit32u)BX_SELECTED_CONTROLLER(channel).sector_no);
logical_sector = ((Bit32u)BX_SELECTED_CONTROLLER(channel).head_no) << 24 |
((Bit32u)BX_SELECTED_CONTROLLER(channel).cylinder_no) << 8 |
(Bit32u)BX_SELECTED_CONTROLLER(channel).sector_no;
//bx_printf ("disk: result: %u\n", logical_sector);
} else
logical_sector = (BX_SELECTED_CONTROLLER(channel).cylinder_no * BX_SELECTED_DRIVE(channel).hard_drive->heads *
BX_SELECTED_DRIVE(channel).hard_drive->sectors) +
(BX_SELECTED_CONTROLLER(channel).head_no * BX_SELECTED_DRIVE(channel).hard_drive->sectors) +
(BX_SELECTED_CONTROLLER(channel).sector_no - 1);
Bit32u sector_count=
(Bit32u)BX_SELECTED_DRIVE(channel).hard_drive->cylinders *
(Bit32u)BX_SELECTED_DRIVE(channel).hard_drive->heads *
(Bit32u)BX_SELECTED_DRIVE(channel).hard_drive->sectors;
if (logical_sector >= sector_count) {
BX_ERROR (("calc_log_addr: out of bounds (%d/%d)", (Bit32u)logical_sector, sector_count));
return false;
}
*sector = logical_sector;
return true;
}
void BX_CPP_AttrRegparmN(1)
bx_hard_drive_c::increment_address(Bit8u channel)
{
BX_SELECTED_CONTROLLER(channel).sector_count--;
if (BX_SELECTED_CONTROLLER(channel).lba_mode) {
off_t current_address;
calculate_logical_address(channel, &current_address);
current_address++;
BX_SELECTED_CONTROLLER(channel).head_no = (Bit8u)((current_address >> 24) & 0xf);
BX_SELECTED_CONTROLLER(channel).cylinder_no = (Bit16u)((current_address >> 8) & 0xffff);
BX_SELECTED_CONTROLLER(channel).sector_no = (Bit8u)((current_address) & 0xff);
} else {
BX_SELECTED_CONTROLLER(channel).sector_no++;
if (BX_SELECTED_CONTROLLER(channel).sector_no > BX_SELECTED_DRIVE(channel).hard_drive->sectors) {
BX_SELECTED_CONTROLLER(channel).sector_no = 1;
BX_SELECTED_CONTROLLER(channel).head_no++;
if (BX_SELECTED_CONTROLLER(channel).head_no >= BX_SELECTED_DRIVE(channel).hard_drive->heads) {
BX_SELECTED_CONTROLLER(channel).head_no = 0;
BX_SELECTED_CONTROLLER(channel).cylinder_no++;
if (BX_SELECTED_CONTROLLER(channel).cylinder_no >= BX_SELECTED_DRIVE(channel).hard_drive->cylinders)
BX_SELECTED_CONTROLLER(channel).cylinder_no = BX_SELECTED_DRIVE(channel).hard_drive->cylinders - 1;
}
}
}
}
void
bx_hard_drive_c::identify_ATAPI_drive(Bit8u channel)
{
unsigned i;
BX_SELECTED_DRIVE(channel).id_drive[0] = (2 << 14) | (5 << 8) | (1 << 7) | (2 << 5) | (0 << 0); // Removable CDROM, 50us response, 12 byte packets
for (i = 1; i <= 9; i++)
BX_SELECTED_DRIVE(channel).id_drive[i] = 0;
const char* serial_number = " VT00001\0\0\0\0\0\0\0\0\0\0\0\0";
for (i = 0; i < 10; i++) {
BX_SELECTED_DRIVE(channel).id_drive[10+i] = (serial_number[i*2] << 8) |
serial_number[i*2 + 1];
}
for (i = 20; i <= 22; i++)
BX_SELECTED_DRIVE(channel).id_drive[i] = 0;
const char* firmware = "ALPHA1 ";
for (i = 0; i < strlen(firmware)/2; i++) {
BX_SELECTED_DRIVE(channel).id_drive[23+i] = (firmware[i*2] << 8) |
firmware[i*2 + 1];
}
BX_ASSERT((23+i) == 27);
for (i = 0; i < strlen((char *) BX_SELECTED_MODEL(channel))/2; i++) {
BX_SELECTED_DRIVE(channel).id_drive[27+i] = (BX_SELECTED_MODEL(channel)[i*2] << 8) |
BX_SELECTED_MODEL(channel)[i*2 + 1];
}
BX_ASSERT((27+i) == 47);
BX_SELECTED_DRIVE(channel).id_drive[47] = 0;
BX_SELECTED_DRIVE(channel).id_drive[48] = 1; // 32 bits access
BX_SELECTED_DRIVE(channel).id_drive[49] = (1 << 9); // LBA supported
BX_SELECTED_DRIVE(channel).id_drive[50] = 0;
BX_SELECTED_DRIVE(channel).id_drive[51] = 0;
BX_SELECTED_DRIVE(channel).id_drive[52] = 0;
BX_SELECTED_DRIVE(channel).id_drive[53] = 3; // words 64-70, 54-58 valid
for (i = 54; i <= 62; i++)
BX_SELECTED_DRIVE(channel).id_drive[i] = 0;
// copied from CFA540A
BX_SELECTED_DRIVE(channel).id_drive[63] = 0x0103; // variable (DMA stuff)
BX_SELECTED_DRIVE(channel).id_drive[64] = 0x0001; // PIO
BX_SELECTED_DRIVE(channel).id_drive[65] = 0x00b4;
BX_SELECTED_DRIVE(channel).id_drive[66] = 0x00b4;
BX_SELECTED_DRIVE(channel).id_drive[67] = 0x012c;
BX_SELECTED_DRIVE(channel).id_drive[68] = 0x00b4;
BX_SELECTED_DRIVE(channel).id_drive[69] = 0;
BX_SELECTED_DRIVE(channel).id_drive[70] = 0;
BX_SELECTED_DRIVE(channel).id_drive[71] = 30; // faked
BX_SELECTED_DRIVE(channel).id_drive[72] = 30; // faked
BX_SELECTED_DRIVE(channel).id_drive[73] = 0;
BX_SELECTED_DRIVE(channel).id_drive[74] = 0;
BX_SELECTED_DRIVE(channel).id_drive[75] = 0;
for (i = 76; i <= 79; i++)
BX_SELECTED_DRIVE(channel).id_drive[i] = 0;
BX_SELECTED_DRIVE(channel).id_drive[80] = 0x1e; // supports up to ATA/ATAPI-4
BX_SELECTED_DRIVE(channel).id_drive[81] = 0;
BX_SELECTED_DRIVE(channel).id_drive[82] = 0;
BX_SELECTED_DRIVE(channel).id_drive[83] = 0;
BX_SELECTED_DRIVE(channel).id_drive[84] = 0;
BX_SELECTED_DRIVE(channel).id_drive[85] = 0;
BX_SELECTED_DRIVE(channel).id_drive[86] = 0;
BX_SELECTED_DRIVE(channel).id_drive[87] = 0;
BX_SELECTED_DRIVE(channel).id_drive[88] = 0;
for (i = 89; i <= 126; i++)
BX_SELECTED_DRIVE(channel).id_drive[i] = 0;
BX_SELECTED_DRIVE(channel).id_drive[127] = 0;
BX_SELECTED_DRIVE(channel).id_drive[128] = 0;
for (i = 129; i <= 159; i++)
BX_SELECTED_DRIVE(channel).id_drive[i] = 0;
for (i = 160; i <= 255; i++)
BX_SELECTED_DRIVE(channel).id_drive[i] = 0;
// now convert the id_drive array (native 256 word format) to
// the controller buffer (512 bytes)
Bit16u temp16;
for (i = 0; i <= 255; i++) {
temp16 = BX_SELECTED_DRIVE(channel).id_drive[i];
BX_SELECTED_CONTROLLER(channel).buffer[i*2] = temp16 & 0x00ff;
BX_SELECTED_CONTROLLER(channel).buffer[i*2+1] = temp16 >> 8;
}
}
void
bx_hard_drive_c::identify_drive(Bit8u channel)
{
unsigned i;
Bit32u temp32;
Bit16u temp16;
#if defined(CONNER_CFA540A)
BX_SELECTED_DRIVE(channel).id_drive[0] = 0x0c5a;
BX_SELECTED_DRIVE(channel).id_drive[1] = 0x0418;
BX_SELECTED_DRIVE(channel).id_drive[2] = 0;
BX_SELECTED_DRIVE(channel).id_drive[3] = BX_SELECTED_DRIVE(channel).hard_drive->heads;
BX_SELECTED_DRIVE(channel).id_drive[4] = 0x9fb7;
BX_SELECTED_DRIVE(channel).id_drive[5] = 0x0289;
BX_SELECTED_DRIVE(channel).id_drive[6] = BX_SELECTED_DRIVE(channel).hard_drive->sectors;
BX_SELECTED_DRIVE(channel).id_drive[7] = 0x0030;
BX_SELECTED_DRIVE(channel).id_drive[8] = 0x000a;
BX_SELECTED_DRIVE(channel).id_drive[9] = 0x0000;
char* serial_number = " CA00GSQ\0\0\0\0\0\0\0\0\0\0\0\0";
for (i = 0; i < 10; i++) {
BX_SELECTED_DRIVE(channel).id_drive[10+i] = (serial_number[i*2] << 8) |
serial_number[i*2 + 1];
}
BX_SELECTED_DRIVE(channel).id_drive[20] = 3;
BX_SELECTED_DRIVE(channel).id_drive[21] = 512; // 512 Sectors = 256kB cache
BX_SELECTED_DRIVE(channel).id_drive[22] = 4;
char* firmware = "8FT054 ";
for (i = 0; i < strlen(firmware)/2; i++) {
BX_SELECTED_DRIVE(channel).id_drive[23+i] = (firmware[i*2] << 8) |
firmware[i*2 + 1];
}
BX_ASSERT((23+i) == 27);
char* model = "Conner Peripherals 540MB - CFA540A ";
for (i = 0; i < strlen(model)/2; i++) {
BX_SELECTED_DRIVE(channel).id_drive[27+i] = (model[i*2] << 8) |
model[i*2 + 1];
}
BX_ASSERT((27+i) == 47);
BX_SELECTED_DRIVE(channel).id_drive[47] = 0x8080; // multiple mode identification
BX_SELECTED_DRIVE(channel).id_drive[48] = 0;
BX_SELECTED_DRIVE(channel).id_drive[49] = 0x0f01;
BX_SELECTED_DRIVE(channel).id_drive[50] = 0;
BX_SELECTED_DRIVE(channel).id_drive[51] = 0;
BX_SELECTED_DRIVE(channel).id_drive[52] = 0x0002;
BX_SELECTED_DRIVE(channel).id_drive[53] = 0x0003;
BX_SELECTED_DRIVE(channel).id_drive[54] = 0x0418;
BX_SELECTED_DRIVE(channel).id_drive[55] = BX_SELECTED_DRIVE(channel).hard_drive->heads;
BX_SELECTED_DRIVE(channel).id_drive[56] = BX_SELECTED_DRIVE(channel).hard_drive->sectors;
BX_SELECTED_DRIVE(channel).id_drive[57] = 0x1e80;
BX_SELECTED_DRIVE(channel).id_drive[58] = 0x0010;
BX_SELECTED_DRIVE(channel).id_drive[59] = 0x0100 | BX_SELECTED_CONTROLLER(channel).sectors_per_block;
BX_SELECTED_DRIVE(channel).id_drive[60] = 0x20e0;
BX_SELECTED_DRIVE(channel).id_drive[61] = 0x0010;
BX_SELECTED_DRIVE(channel).id_drive[62] = 0;
BX_SELECTED_DRIVE(channel).id_drive[63] = 0x0103; // variable (DMA stuff)
BX_SELECTED_DRIVE(channel).id_drive[64] = 0x0001; // PIO
BX_SELECTED_DRIVE(channel).id_drive[65] = 0x00b4;
BX_SELECTED_DRIVE(channel).id_drive[66] = 0x00b4;
BX_SELECTED_DRIVE(channel).id_drive[67] = 0x012c;
BX_SELECTED_DRIVE(channel).id_drive[68] = 0x00b4;
for (i = 69; i <= 79; i++)
BX_SELECTED_DRIVE(channel).id_drive[i] = 0;
BX_SELECTED_DRIVE(channel).id_drive[80] = 0;
BX_SELECTED_DRIVE(channel).id_drive[81] = 0;
BX_SELECTED_DRIVE(channel).id_drive[82] = 0;
BX_SELECTED_DRIVE(channel).id_drive[83] = 0;
BX_SELECTED_DRIVE(channel).id_drive[84] = 0;
BX_SELECTED_DRIVE(channel).id_drive[85] = 0;
BX_SELECTED_DRIVE(channel).id_drive[86] = 0;
BX_SELECTED_DRIVE(channel).id_drive[87] = 0;
for (i = 88; i <= 127; i++)
BX_SELECTED_DRIVE(channel).id_drive[i] = 0;
BX_SELECTED_DRIVE(channel).id_drive[128] = 0x0418;
BX_SELECTED_DRIVE(channel).id_drive[129] = 0x103f;
BX_SELECTED_DRIVE(channel).id_drive[130] = 0x0418;
BX_SELECTED_DRIVE(channel).id_drive[131] = 0x103f;
BX_SELECTED_DRIVE(channel).id_drive[132] = 0x0004;
BX_SELECTED_DRIVE(channel).id_drive[133] = 0xffff;
BX_SELECTED_DRIVE(channel).id_drive[134] = 0;
BX_SELECTED_DRIVE(channel).id_drive[135] = 0x5050;
for (i = 136; i <= 144; i++)
BX_SELECTED_DRIVE(channel).id_drive[i] = 0;
BX_SELECTED_DRIVE(channel).id_drive[145] = 0x302e;
BX_SELECTED_DRIVE(channel).id_drive[146] = 0x3245;
BX_SELECTED_DRIVE(channel).id_drive[147] = 0x2020;
BX_SELECTED_DRIVE(channel).id_drive[148] = 0x2020;
for (i = 149; i <= 255; i++)
BX_SELECTED_DRIVE(channel).id_drive[i] = 0;
#else
// Identify Drive command return values definition
//
// This code is rehashed from some that was donated.
// I'm using ANSI X3.221-1994, AT Attachment Interface for Disk Drives
// and X3T10 2008D Working Draft for ATA-3
// Word 0: general config bit-significant info
// Note: bits 1-5 and 8-14 are now "Vendor specific (obsolete)"
// bit 15: 0=ATA device
// 1=ATAPI device
// bit 14: 1=format speed tolerance gap required
// bit 13: 1=track offset option available
// bit 12: 1=data strobe offset option available
// bit 11: 1=rotational speed tolerance is > 0,5% (typo?)
// bit 10: 1=disk transfer rate > 10Mbs
// bit 9: 1=disk transfer rate > 5Mbs but <= 10Mbs
// bit 8: 1=disk transfer rate <= 5Mbs
// bit 7: 1=removable cartridge drive
// bit 6: 1=fixed drive
// bit 5: 1=spindle motor control option implemented
// bit 4: 1=head switch time > 15 usec
// bit 3: 1=not MFM encoded
// bit 2: 1=soft sectored
// bit 1: 1=hard sectored
// bit 0: 0=reserved
BX_SELECTED_DRIVE(channel).id_drive[0] = 0x0040;
// Word 1: number of user-addressable cylinders in
// default translation mode. If the value in words 60-61
// exceed 16,515,072, this word shall contain 16,383.
BX_SELECTED_DRIVE(channel).id_drive[1] = BX_SELECTED_DRIVE(channel).hard_drive->cylinders;
// Word 2: reserved
BX_SELECTED_DRIVE(channel).id_drive[2] = 0;
// Word 3: number of user-addressable heads in default
// translation mode
BX_SELECTED_DRIVE(channel).id_drive[3] = BX_SELECTED_DRIVE(channel).hard_drive->heads;
// Word 4: # unformatted bytes per translated track in default xlate mode
// Word 5: # unformatted bytes per sector in default xlated mode
// Word 6: # user-addressable sectors per track in default xlate mode
// Note: words 4,5 are now "Vendor specific (obsolete)"
BX_SELECTED_DRIVE(channel).id_drive[4] = (512 * BX_SELECTED_DRIVE(channel).hard_drive->sectors);
BX_SELECTED_DRIVE(channel).id_drive[5] = 512;
BX_SELECTED_DRIVE(channel).id_drive[6] = BX_SELECTED_DRIVE(channel).hard_drive->sectors;
// Word 7-9: Vendor specific
for (i=7; i<=9; i++)
BX_SELECTED_DRIVE(channel).id_drive[i] = 0;
// Word 10-19: Serial number (20 ASCII characters, 0000h=not specified)
// This field is right justified and padded with spaces (20h).
for (i=10; i<=19; i++)
BX_SELECTED_DRIVE(channel).id_drive[i] = 0;
// Word 20: buffer type
// 0000h = not specified
// 0001h = single ported single sector buffer which is
// not capable of simulataneous data xfers to/from
// the host and the disk.
// 0002h = dual ported multi-sector buffer capable of
// simulatenous data xfers to/from the host and disk.
// 0003h = dual ported mutli-sector buffer capable of
// simulatenous data xfers with a read caching
// capability.
// 0004h-ffffh = reserved
BX_SELECTED_DRIVE(channel).id_drive[20] = 3;
// Word 21: buffer size in 512 byte increments, 0000h = not specified
BX_SELECTED_DRIVE(channel).id_drive[21] = 512; // 512 Sectors = 256kB cache
// Word 22: # of ECC bytes available on read/write long cmds
// 0000h = not specified
BX_SELECTED_DRIVE(channel).id_drive[22] = 4;
// Word 23..26: Firmware revision (8 ascii chars, 0000h=not specified)
// This field is left justified and padded with spaces (20h)
for (i=23; i<=26; i++)
BX_SELECTED_DRIVE(channel).id_drive[i] = 0;
// Word 27..46: Model number (40 ascii chars, 0000h=not specified)
// This field is left justified and padded with spaces (20h)
// for (i=27; i<=46; i++)
// BX_SELECTED_DRIVE(channel).id_drive[i] = 0;
for (i=0; i<20; i++) {
BX_SELECTED_DRIVE(channel).id_drive[27+i] = (BX_SELECTED_MODEL(channel)[i*2] << 8) |
BX_SELECTED_MODEL(channel)[i*2 + 1];
}
// Word 47: 15-8 Vendor unique
// 7-0 00h= read/write multiple commands not implemented
// xxh= maximum # of sectors that can be transferred
// per interrupt on read and write multiple commands
BX_SELECTED_DRIVE(channel).id_drive[47] = max_multiple_sectors;
// Word 48: 0000h = cannot perform dword IO
// 0001h = can perform dword IO
BX_SELECTED_DRIVE(channel).id_drive[48] = 1;
// Word 49: Capabilities
// 15-10: 0 = reserved
// 9: 1 = LBA supported
// 8: 1 = DMA supported
// 7-0: Vendor unique
BX_SELECTED_DRIVE(channel).id_drive[49] = 1<<9;
// Word 50: Reserved
BX_SELECTED_DRIVE(channel).id_drive[50] = 0;
// Word 51: 15-8 PIO data transfer cycle timing mode
// 7-0 Vendor unique
BX_SELECTED_DRIVE(channel).id_drive[51] = 0x200;
// Word 52: 15-8 DMA data transfer cycle timing mode
// 7-0 Vendor unique
BX_SELECTED_DRIVE(channel).id_drive[52] = 0x200;
// Word 53: 15-1 Reserved
// 0 1=the fields reported in words 54-58 are valid
// 0=the fields reported in words 54-58 may be valid
BX_SELECTED_DRIVE(channel).id_drive[53] = 0;
// Word 54: # of user-addressable cylinders in curr xlate mode
// Word 55: # of user-addressable heads in curr xlate mode
// Word 56: # of user-addressable sectors/track in curr xlate mode
BX_SELECTED_DRIVE(channel).id_drive[54] = BX_SELECTED_DRIVE(channel).hard_drive->cylinders;
BX_SELECTED_DRIVE(channel).id_drive[55] = BX_SELECTED_DRIVE(channel).hard_drive->heads;
BX_SELECTED_DRIVE(channel).id_drive[56] = BX_SELECTED_DRIVE(channel).hard_drive->sectors;
// Word 57-58: Current capacity in sectors
// Excludes all sectors used for device specific purposes.
temp32 =
BX_SELECTED_DRIVE(channel).hard_drive->cylinders *
BX_SELECTED_DRIVE(channel).hard_drive->heads *
BX_SELECTED_DRIVE(channel).hard_drive->sectors;
BX_SELECTED_DRIVE(channel).id_drive[57] = (temp32 & 0xffff); // LSW
BX_SELECTED_DRIVE(channel).id_drive[58] = (temp32 >> 16); // MSW
// Word 59: 15-9 Reserved
// 8 1=multiple sector setting is valid
// 7-0 current setting for number of sectors that can be
// transferred per interrupt on R/W multiple commands
BX_SELECTED_DRIVE(channel).id_drive[59] = 0x0000 | curr_multiple_sectors;
// Word 60-61:
// If drive supports LBA Mode, these words reflect total # of user
// addressable sectors. This value does not depend on the current
// drive geometry. If the drive does not support LBA mode, these
// words shall be set to 0.
Bit32u num_sects = BX_SELECTED_DRIVE(channel).hard_drive->cylinders * BX_SELECTED_DRIVE(channel).hard_drive->heads * BX_SELECTED_DRIVE(channel).hard_drive->sectors;
BX_SELECTED_DRIVE(channel).id_drive[60] = num_sects & 0xffff; // LSW
BX_SELECTED_DRIVE(channel).id_drive[61] = num_sects >> 16; // MSW
// Word 62: 15-8 single word DMA transfer mode active
// 7-0 single word DMA transfer modes supported
// The low order byte identifies by bit, all the Modes which are
// supported e.g., if Mode 0 is supported bit 0 is set.
// The high order byte contains a single bit set to indiciate
// which mode is active.
BX_SELECTED_DRIVE(channel).id_drive[62] = 0x0;
// Word 63: 15-8 multiword DMA transfer mode active
// 7-0 multiword DMA transfer modes supported
// The low order byte identifies by bit, all the Modes which are
// supported e.g., if Mode 0 is supported bit 0 is set.
// The high order byte contains a single bit set to indiciate
// which mode is active.
BX_SELECTED_DRIVE(channel).id_drive[63] = 0x0;
// Word 64-79 Reserved
for (i=64; i<=79; i++)
BX_SELECTED_DRIVE(channel).id_drive[i] = 0;
// Word 80: 15-5 reserved
// 4 supports ATA/ATAPI-4
// 3 supports ATA-3
// 2 supports ATA-2
// 1 supports ATA-1
// 0 reserved
BX_SELECTED_DRIVE(channel).id_drive[80] = (1 << 2) | (1 << 1);
// Word 81: Minor version number
BX_SELECTED_DRIVE(channel).id_drive[81] = 0;
// Word 82: 15 obsolete
// 14 NOP command supported
// 13 READ BUFFER command supported
// 12 WRITE BUFFER command supported
// 11 obsolete
// 10 Host protected area feature set supported
// 9 DEVICE RESET command supported
// 8 SERVICE interrupt supported
// 7 release interrupt supported
// 6 look-ahead supported
// 5 write cache supported
// 4 supports PACKET command feature set
// 3 supports power management feature set
// 2 supports removable media feature set
// 1 supports securite mode feature set
// 0 support SMART feature set
BX_SELECTED_DRIVE(channel).id_drive[82] = 1 << 14;
BX_SELECTED_DRIVE(channel).id_drive[83] = 1 << 14;
BX_SELECTED_DRIVE(channel).id_drive[84] = 1 << 14;
BX_SELECTED_DRIVE(channel).id_drive[85] = 1 << 14;
BX_SELECTED_DRIVE(channel).id_drive[86] = 0;
BX_SELECTED_DRIVE(channel).id_drive[87] = 1 << 14;
for (i=88; i<=127; i++)
BX_SELECTED_DRIVE(channel).id_drive[i] = 0;
// Word 128-159 Vendor unique
for (i=128; i<=159; i++)
BX_SELECTED_DRIVE(channel).id_drive[i] = 0;
// Word 160-255 Reserved
for (i=160; i<=255; i++)
BX_SELECTED_DRIVE(channel).id_drive[i] = 0;
#endif
BX_DEBUG(("Drive ID Info. initialized : %04d {%s}", 512, BX_SELECTED_TYPE_STRING(channel)));
// now convert the id_drive array (native 256 word format) to
// the controller buffer (512 bytes)
for (i=0; i<=255; i++) {
temp16 = BX_SELECTED_DRIVE(channel).id_drive[i];
BX_SELECTED_CONTROLLER(channel).buffer[i*2] = temp16 & 0x00ff;
BX_SELECTED_CONTROLLER(channel).buffer[i*2+1] = temp16 >> 8;
}
}
void BX_CPP_AttrRegparmN(3)
bx_hard_drive_c::init_send_atapi_command(Bit8u channel, Bit8u command, int req_length, int alloc_length, bool lazy)
{
// BX_SELECTED_CONTROLLER(channel).byte_count is a union of BX_SELECTED_CONTROLLER(channel).cylinder_no;
// lazy is used to force a data read in the buffer at the next read.
if (BX_SELECTED_CONTROLLER(channel).byte_count == 0xffff)
BX_SELECTED_CONTROLLER(channel).byte_count = 0xfffe;
if ((BX_SELECTED_CONTROLLER(channel).byte_count & 1)
&& !(alloc_length <= BX_SELECTED_CONTROLLER(channel).byte_count)) {
BX_INFO(("Odd byte count (0x%04x) to ATAPI command 0x%02x, using 0x%04x",
BX_SELECTED_CONTROLLER(channel).byte_count, command, BX_SELECTED_CONTROLLER(channel).byte_count - 1));
BX_SELECTED_CONTROLLER(channel).byte_count -= 1;
}
if (BX_SELECTED_CONTROLLER(channel).byte_count == 0)
BX_PANIC(("ATAPI command with zero byte count"));
if (alloc_length < 0)
BX_PANIC(("Allocation length < 0"));
if (alloc_length == 0)
alloc_length = BX_SELECTED_CONTROLLER(channel).byte_count;
BX_SELECTED_CONTROLLER(channel).interrupt_reason.i_o = 1;
BX_SELECTED_CONTROLLER(channel).interrupt_reason.c_d = 0;
BX_SELECTED_CONTROLLER(channel).status.busy = 0;
BX_SELECTED_CONTROLLER(channel).status.drq = 1;
BX_SELECTED_CONTROLLER(channel).status.err = 0;
// no bytes transfered yet
if (lazy)
BX_SELECTED_CONTROLLER(channel).buffer_index = 2048;
else
BX_SELECTED_CONTROLLER(channel).buffer_index = 0;
BX_SELECTED_CONTROLLER(channel).drq_index = 0;
if (BX_SELECTED_CONTROLLER(channel).byte_count > req_length)
BX_SELECTED_CONTROLLER(channel).byte_count = req_length;
if (BX_SELECTED_CONTROLLER(channel).byte_count > alloc_length)
BX_SELECTED_CONTROLLER(channel).byte_count = alloc_length;
BX_SELECTED_DRIVE(channel).atapi.command = command;
BX_SELECTED_DRIVE(channel).atapi.drq_bytes = BX_SELECTED_CONTROLLER(channel).byte_count;
BX_SELECTED_DRIVE(channel).atapi.total_bytes_remaining = (req_length < alloc_length) ? req_length : alloc_length;
// if (lazy) {
// // bias drq_bytes and total_bytes_remaining
// BX_SELECTED_DRIVE(channel).atapi.drq_bytes += 2048;
// BX_SELECTED_DRIVE(channel).atapi.total_bytes_remaining += 2048;
// }
}
void
bx_hard_drive_c::atapi_cmd_error(Bit8u channel, sense_t sense_key, asc_t asc)
{
BX_ERROR(("atapi_cmd_error channel=%02x key=%02x asc=%02x", channel, sense_key, asc));
BX_SELECTED_CONTROLLER(channel).error_register = sense_key << 4;
BX_SELECTED_CONTROLLER(channel).interrupt_reason.i_o = 1;
BX_SELECTED_CONTROLLER(channel).interrupt_reason.c_d = 1;
BX_SELECTED_CONTROLLER(channel).interrupt_reason.rel = 0;
BX_SELECTED_CONTROLLER(channel).status.busy = 0;
BX_SELECTED_CONTROLLER(channel).status.drive_ready = 1;
BX_SELECTED_CONTROLLER(channel).status.write_fault = 0;
BX_SELECTED_CONTROLLER(channel).status.drq = 0;
BX_SELECTED_CONTROLLER(channel).status.err = 1;
BX_SELECTED_DRIVE(channel).sense.sense_key = sense_key;
BX_SELECTED_DRIVE(channel).sense.asc = asc;
BX_SELECTED_DRIVE(channel).sense.ascq = 0;
}
void BX_CPP_AttrRegparmN(1)
bx_hard_drive_c::atapi_cmd_nop(Bit8u channel)
{
BX_SELECTED_CONTROLLER(channel).interrupt_reason.i_o = 1;
BX_SELECTED_CONTROLLER(channel).interrupt_reason.c_d = 1;
BX_SELECTED_CONTROLLER(channel).interrupt_reason.rel = 0;
BX_SELECTED_CONTROLLER(channel).status.busy = 0;
BX_SELECTED_CONTROLLER(channel).status.drive_ready = 1;
BX_SELECTED_CONTROLLER(channel).status.drq = 0;
BX_SELECTED_CONTROLLER(channel).status.err = 0;
}
void
bx_hard_drive_c::init_mode_sense_single(Bit8u channel, const void* src, int size)
{
// Header
BX_SELECTED_CONTROLLER(channel).buffer[0] = (size+6) >> 8;
BX_SELECTED_CONTROLLER(channel).buffer[1] = (size+6) & 0xff;
BX_SELECTED_CONTROLLER(channel).buffer[2] = 0x70; // no media present
BX_SELECTED_CONTROLLER(channel).buffer[3] = 0; // reserved
BX_SELECTED_CONTROLLER(channel).buffer[4] = 0; // reserved
BX_SELECTED_CONTROLLER(channel).buffer[5] = 0; // reserved
BX_SELECTED_CONTROLLER(channel).buffer[6] = 0; // reserved
BX_SELECTED_CONTROLLER(channel).buffer[7] = 0; // reserved
// Data
memcpy(BX_SELECTED_CONTROLLER(channel).buffer + 8, src, size);
}
void BX_CPP_AttrRegparmN(1)
bx_hard_drive_c::ready_to_send_atapi(Bit8u channel)
{
raise_interrupt(channel);
}
void BX_CPP_AttrRegparmN(1)
bx_hard_drive_c::raise_interrupt(Bit8u channel)
{
BX_DEBUG(("raise_interrupt called, disable_irq = %02x", BX_SELECTED_CONTROLLER(channel).control.disable_irq));
if (!BX_SELECTED_CONTROLLER(channel).control.disable_irq) { BX_DEBUG(("raising interrupt")); } else { BX_DEBUG(("Not raising interrupt")); }
if (!BX_SELECTED_CONTROLLER(channel).control.disable_irq) {
Bit32u irq = BX_HD_THIS channels[channel].irq;
BX_DEBUG(("Raising interrupt %d {%s}", irq, BX_SELECTED_TYPE_STRING(channel)));
DEV_pic_raise_irq(irq);
} else {
if (bx_dbg.disk || (BX_SELECTED_IS_CD(channel) && bx_dbg.cdrom))
BX_INFO(("Interrupt masked {%s}", BX_SELECTED_TYPE_STRING(channel)));
}
}
void
bx_hard_drive_c::command_aborted(Bit8u channel, unsigned value)
{
BX_DEBUG(("aborting on command 0x%02x {%s}", value, BX_SELECTED_TYPE_STRING(channel)));
BX_SELECTED_CONTROLLER(channel).current_command = 0;
BX_SELECTED_CONTROLLER(channel).status.busy = 0;
BX_SELECTED_CONTROLLER(channel).status.drive_ready = 1;
BX_SELECTED_CONTROLLER(channel).status.err = 1;
BX_SELECTED_CONTROLLER(channel).error_register = 0x04; // command ABORTED
BX_SELECTED_CONTROLLER(channel).status.drq = 0;
BX_SELECTED_CONTROLLER(channel).status.seek_complete = 0;
BX_SELECTED_CONTROLLER(channel).status.corrected_data = 0;
BX_SELECTED_CONTROLLER(channel).buffer_index = 0;
raise_interrupt(channel);
}
Bit32u
bx_hard_drive_c::get_device_handle(Bit8u channel, Bit8u device)
{
BX_DEBUG(("get_device_handle %d %d",channel, device));
if ((channel < BX_MAX_ATA_CHANNEL) && (device < 2)) {
return ((channel*2) + device);
}
return BX_MAX_ATA_CHANNEL*2;
}
Bit32u
bx_hard_drive_c::get_first_cd_handle(void)
{
for (Bit8u channel=0; channel<BX_MAX_ATA_CHANNEL; channel++) {
if (BX_DRIVE_IS_CD(channel,0)) return (channel*2);
if (BX_DRIVE_IS_CD(channel,1)) return ((channel*2) + 1);
}
return BX_MAX_ATA_CHANNEL*2;
}
unsigned
bx_hard_drive_c::get_cd_media_status(Bit32u handle)
{
if ( handle >= BX_MAX_ATA_CHANNEL*2 ) return 0;
Bit8u channel = handle / 2;
Bit8u device = handle % 2;
return( BX_HD_THIS channels[channel].drives[device].cdrom.ready );
}
unsigned
bx_hard_drive_c::set_cd_media_status(Bit32u handle, unsigned status)
{
BX_DEBUG (("set_cd_media_status handle=%d status=%d", handle, status));
if ( handle >= BX_MAX_ATA_CHANNEL*2 ) return 0;
Bit8u channel = handle / 2;
Bit8u device = handle % 2;
// if setting to the current value, nothing to do
if (status == BX_HD_THIS channels[channel].drives[device].cdrom.ready)
return(status);
// return 0 if no cdromd is present
if (!BX_DRIVE_IS_CD(channel,device))
return(0);
if (status == 0) {
// eject cdrom if not locked by guest OS
if (BX_HD_THIS channels[channel].drives[device].cdrom.locked) return(1);
else {
#ifdef LOWLEVEL_CDROM
BX_HD_THIS channels[channel].drives[device].cdrom.cd->eject_cdrom();
#endif
BX_HD_THIS channels[channel].drives[device].cdrom.ready = 0;
bx_options.atadevice[channel][device].Ostatus->set(BX_EJECTED);
}
}
else {
// insert cdrom
#ifdef LOWLEVEL_CDROM
if (BX_HD_THIS channels[channel].drives[device].cdrom.cd->insert_cdrom(bx_options.atadevice[channel][device].Opath->getptr())) {
BX_INFO(( "Media present in CD-ROM drive"));
BX_HD_THIS channels[channel].drives[device].cdrom.ready = 1;
BX_HD_THIS channels[channel].drives[device].cdrom.capacity = BX_HD_THIS channels[channel].drives[device].cdrom.cd->capacity();
bx_options.atadevice[channel][device].Ostatus->set(BX_INSERTED);
BX_SELECTED_DRIVE(channel).sense.sense_key = SENSE_UNIT_ATTENTION;
BX_SELECTED_DRIVE(channel).sense.asc = 0;
BX_SELECTED_DRIVE(channel).sense.ascq = 0;
raise_interrupt(channel);
}
else {
#endif
BX_INFO(( "Could not locate CD-ROM, continuing with media not present"));
BX_HD_THIS channels[channel].drives[device].cdrom.ready = 0;
bx_options.atadevice[channel][device].Ostatus->set(BX_EJECTED);
#ifdef LOWLEVEL_CDROM
}
#endif
}
return( BX_HD_THIS channels[channel].drives[device].cdrom.ready );
}
/*** default_image_t function definitions ***/
int default_image_t::open (const char* pathname)
{
return open(pathname, O_RDWR);
}
int default_image_t::open (const char* pathname, int flags)
{
fd = ::open(pathname, flags
#ifdef O_BINARY
| O_BINARY
#endif
);
if (fd < 0) {
return fd;
}
/* look at size of image file to calculate disk geometry */
struct stat stat_buf;
int ret = fstat(fd, &stat_buf);
if (ret) {
BX_PANIC(("fstat() returns error!"));
}
return fd;
}
void default_image_t::close ()
{
if (fd > -1) {
::close(fd);
}
}
off_t default_image_t::lseek (off_t offset, int whence)
{
return ::lseek(fd, offset, whence);
}
ssize_t default_image_t::read (void* buf, size_t count)
{
return ::read(fd, (char*) buf, count);
}
ssize_t default_image_t::write (const void* buf, size_t count)
{
return ::write(fd, (char*) buf, count);
}
char increment_string (char *str, int diff)
{
// find the last character of the string, and increment it.
char *p = str;
while (*p != 0) p++;
BX_ASSERT (p>str); // choke on zero length strings
p--; // point to last character of the string
(*p) += diff; // increment to next/previous ascii code.
BX_DEBUG(("increment string returning '%s'", str));
return (*p);
}
/*** concat_image_t function definitions ***/
concat_image_t::concat_image_t ()
{
fd = -1;
}
void concat_image_t::increment_string (char *str)
{
::increment_string(str, +1);
}
int concat_image_t::open (const char* pathname0)
{
char *pathname = strdup (pathname0);
BX_DEBUG(("concat_image_t.open"));
off_t start_offset = 0;
for (int i=0; i<BX_CONCAT_MAX_IMAGES; i++) {
fd_table[i] = ::open(pathname, O_RDWR
#ifdef O_BINARY
| O_BINARY
#endif
);
if (fd_table[i] < 0) {
// open failed.
// if no FD was opened successfully, return -1 (fail).
if (i==0) return -1;
// otherwise, it only means that all images in the series have
// been opened. Record the number of fds opened successfully.
maxfd = i;
break;
}
BX_DEBUG(("concat_image: open image %s, fd[%d] = %d", pathname, i, fd_table[i]));
/* look at size of image file to calculate disk geometry */
struct stat stat_buf;
int ret = fstat(fd_table[i], &stat_buf);
if (ret) {
BX_PANIC(("fstat() returns error!"));
}
#ifdef S_ISBLK
if (S_ISBLK(stat_buf.st_mode)) {
BX_PANIC(("block devices should REALLY NOT be used with --enable-split-hd. "
"Please reconfigure with --disable-split-hd"));
}
#endif
if ((stat_buf.st_size % 512) != 0) {
BX_PANIC(("size of disk image must be multiple of 512 bytes"));
}
length_table[i] = stat_buf.st_size;
start_offset_table[i] = start_offset;
start_offset += stat_buf.st_size;
increment_string (pathname);
}
// start up with first image selected
index = 0;
fd = fd_table[0];
thismin = 0;
thismax = length_table[0]-1;
seek_was_last_op = 0;
return 0; // success.
}
void concat_image_t::close ()
{
BX_DEBUG(("concat_image_t.close"));
if (fd > -1) {
::close(fd);
}
}
off_t concat_image_t::lseek (off_t offset, int whence)
{
if ((offset % 512) != 0)
BX_PANIC( ("lseek HD with offset not multiple of 512"));
BX_DEBUG(("concat_image_t.lseek(%d)", whence));
// is this offset in this disk image?
if (offset < thismin) {
// no, look at previous images
for (int i=index-1; i>=0; i--) {
if (offset >= start_offset_table[i]) {
index = i;
fd = fd_table[i];
thismin = start_offset_table[i];
thismax = thismin + length_table[i] - 1;
BX_DEBUG(("concat_image_t.lseek to earlier image, index=%d", index));
break;
}
}
} else if (offset > thismax) {
// no, look at later images
for (int i=index+1; i<maxfd; i++) {
if (offset < start_offset_table[i] + length_table[i]) {
index = i;
fd = fd_table[i];
thismin = start_offset_table[i];
thismax = thismin + length_table[i] - 1;
BX_DEBUG(("concat_image_t.lseek to earlier image, index=%d", index));
break;
}
}
}
// now offset should be within the current image.
offset -= start_offset_table[index];
if (offset < 0 || offset >= length_table[index]) {
BX_PANIC(("concat_image_t.lseek to byte %ld failed", (long)offset));
return -1;
}
seek_was_last_op = 1;
return ::lseek(fd, offset, whence);
}
ssize_t concat_image_t::read (void* buf, size_t count)
{
if (bx_dbg.disk)
BX_DEBUG(("concat_image_t.read %ld bytes", (long)count));
// notice if anyone does sequential read or write without seek in between.
// This can be supported pretty easily, but needs additional checks for
// end of a partial image.
if (!seek_was_last_op)
BX_PANIC( ("no seek before read"));
return ::read(fd, (char*) buf, count);
}
ssize_t concat_image_t::write (const void* buf, size_t count)
{
BX_DEBUG(("concat_image_t.write %ld bytes", (long)count));
// notice if anyone does sequential read or write without seek in between.
// This can be supported pretty easily, but needs additional checks for
// end of a partial image.
if (!seek_was_last_op)
BX_PANIC( ("no seek before write"));
return ::write(fd, (char*) buf, count);
}
/*** sparse_image_t function definitions ***/
sparse_image_t::sparse_image_t ()
{
fd = -1;
pathname = NULL;
#ifdef _POSIX_MAPPED_FILES
mmap_header = NULL;
#endif
pagetable = NULL;
}
/*
void showpagetable(uint32 * pagetable, size_t numpages)
{
printf("Non null pages: ");
for (int i = 0; i < numpages; i++)
{
if (pagetable[i] != 0xffffffff)
{
printf("%d ", i);
}
}
printf("\n");
}
*/
void sparse_image_t::read_header()
{
BX_ASSERT(sizeof(header) == SPARSE_HEADER_SIZE);
int ret = ::read(fd, &header, sizeof(header));
if (-1 == ret)
{
panic(strerror(errno));
}
if (sizeof(header) != ret)
{
panic("could not read entire header");
}
if (dtoh32(header.magic) != SPARSE_HEADER_MAGIC)
{
panic("failed header magic check");
}
if (dtoh32(header.version) != 1)
{
panic("unknown version in header");
}
pagesize = dtoh32(header.pagesize);
uint32 numpages = dtoh32(header.numpages);
total_size = pagesize;
total_size *= numpages;
pagesize_shift = 0;
while ((pagesize >> pagesize_shift) > 1) pagesize_shift++;
if ((uint32)(1 << pagesize_shift) != pagesize)
{
panic("failed block size header check");
}
pagesize_mask = pagesize - 1;
size_t preamble_size = (sizeof(uint32) * numpages) + sizeof(header);
data_start = 0;
while (data_start < preamble_size) data_start += pagesize;
bool did_mmap = false;
#ifdef _POSIX_MAPPED_FILES
// Try to memory map from the beginning of the file (0 is trivially a page multiple)
void * mmap_header = mmap(NULL, preamble_size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
if (mmap_header == MAP_FAILED)
{
BX_INFO(("failed to mmap sparse disk file - using conventional file access"));
mmap_header = NULL;
}
else
{
mmap_length = preamble_size;
did_mmap = true;
pagetable = ((uint32 *) (((uint8 *) mmap_header) + sizeof(header)));
// system_pagesize = getpagesize();
system_pagesize_mask = getpagesize() - 1;
}
#endif
if (!did_mmap)
{
pagetable = new uint32[numpages];
if (pagetable == NULL)
{
panic("could not allocate memory for sparse disk block table");
}
ret = ::read(fd, pagetable, sizeof(uint32) * numpages);
if (-1 == ret)
{
panic(strerror(errno));
}
if ((int)(sizeof(uint32) * numpages) != ret)
{
panic("could not read entire block table");
}
}
}
int sparse_image_t::open (const char* pathname0)
{
pathname = strdup(pathname0);
BX_DEBUG(("sparse_image_t.open"));
fd = ::open(pathname, O_RDWR
#ifdef O_BINARY
| O_BINARY
#endif
);
if (fd < 0)
{
// open failed.
return -1;
}
BX_DEBUG(("sparse_image: open image %s", pathname));
read_header();
struct stat stat_buf;
if (0 != fstat(fd, &stat_buf)) panic(("fstat() returns error!"));
underlying_filesize = stat_buf.st_size;
if ((underlying_filesize % pagesize) != 0)
panic("size of sparse disk image is not multiple of page size");
underlying_current_filepos = 0;
if (-1 == ::lseek(fd, 0, SEEK_SET))
panic("error while seeking to start of file");
lseek(0, SEEK_SET);
//showpagetable(pagetable, header.numpages);
char * parentpathname = strdup(pathname);
char lastchar = ::increment_string(parentpathname, -1);
if ((lastchar >= '0') && (lastchar <= '9'))
{
struct stat stat_buf;
if (0 == stat(parentpathname, &stat_buf))
{
parent_image = new sparse_image_t();
int ret = parent_image->open(parentpathname);
if (ret != 0) return ret;
if ( (parent_image->pagesize != pagesize)
|| (parent_image->total_size != total_size))
{
panic("child drive image does not have same page count/page size configuration");
}
}
}
if (parentpathname != NULL) free(parentpathname);
return 0; // success.
}
void sparse_image_t::close ()
{
BX_DEBUG(("concat_image_t.close"));
if (pathname != NULL)
{
free(pathname);
}
#ifdef _POSIX_MAPPED_FILES
if (mmap_header != NULL)
{
int ret = munmap(mmap_header, mmap_length);
if (ret != 0)
BX_INFO(("failed to un-memory map sparse disk file"));
}
pagetable = NULL; // We didn't malloc it
#endif
if (fd > -1) {
::close(fd);
}
if (pagetable != NULL)
{
delete [] pagetable;
}
if (parent_image != NULL)
{
delete parent_image;
}
}
off_t sparse_image_t::lseek (off_t offset, int whence)
{
//showpagetable(pagetable, header.numpages);
if ((offset % 512) != 0)
BX_PANIC( ("lseek HD with offset not multiple of 512"));
if (whence != SEEK_SET)
BX_PANIC( ("lseek HD with whence not SEEK_SET"));
BX_DEBUG(("sparse_image_t.lseek(%d)", whence));
if (offset > total_size)
{
BX_PANIC(("sparse_image_t.lseek to byte %ld failed", (long)offset));
return -1;
}
//printf("Seeking to position %ld\n", (long) offset);
set_virtual_page(offset >> pagesize_shift);
position_page_offset = offset & pagesize_mask;
return 0;
}
inline off_t sparse_image_t::get_physical_offset()
{
off_t physical_offset = data_start;
physical_offset += (position_physical_page << pagesize_shift);
physical_offset += position_page_offset;
return physical_offset;
}
inline void sparse_image_t::set_virtual_page(uint32 new_virtual_page)
{
position_virtual_page = new_virtual_page;
position_physical_page = dtoh32(pagetable[position_virtual_page]);
}
ssize_t sparse_image_t::read_page_fragment(uint32 read_virtual_page, uint32 read_page_offset, size_t read_size, void * buf)
{
if (read_virtual_page != position_virtual_page)
{
set_virtual_page(read_virtual_page);
}
position_page_offset = read_page_offset;
if (position_physical_page == SPARSE_PAGE_NOT_ALLOCATED)
{
if (parent_image != NULL)
{
return parent_image->read_page_fragment(read_virtual_page, read_page_offset, read_size, buf);
}
else
{
memset(buf, read_size, 0);
}
}
else
{
off_t physical_offset = get_physical_offset();
if (physical_offset != underlying_current_filepos)
{
int ret = ::lseek(fd, physical_offset, SEEK_SET);
// underlying_current_filepos update deferred
if (ret == -1)
panic(strerror(errno));
}
//printf("Reading %s at position %ld size %d\n", pathname, (long) physical_offset, (long) read_size);
ssize_t readret = ::read(fd, buf, read_size);
if (readret == -1)
{
panic(strerror(errno));
}
if ((size_t)readret != read_size)
{
panic("could not read block contents from file");
}
underlying_current_filepos = physical_offset + read_size;
}
return read_size;
}
ssize_t sparse_image_t::read(void* buf, size_t count)
{
//showpagetable(pagetable, header.numpages);
ssize_t total_read = 0;
if (bx_dbg.disk)
BX_DEBUG(("sparse_image_t.read %ld bytes", (long)count));
while (count != 0)
{
size_t can_read = pagesize - position_page_offset;
if (count < can_read) can_read = count;
BX_ASSERT (can_read != 0);
size_t was_read = read_page_fragment(position_virtual_page, position_page_offset, can_read, buf);
BX_ASSERT(was_read == can_read);
total_read += can_read;
position_page_offset += can_read;
if (position_page_offset == pagesize)
{
position_page_offset = 0;
set_virtual_page(position_virtual_page + 1);
}
BX_ASSERT(position_page_offset < pagesize);
buf = (((uint8 *) buf) + can_read);
count -= can_read;
}
return total_read;
}
void sparse_image_t::panic(const char * message)
{
char buffer[1024];
if (message == NULL)
{
snprintf(buffer, sizeof(buffer), "error with sparse disk image %s", pathname);
}
else
{
snprintf(buffer, sizeof(buffer), "error with sparse disk image %s - %s", pathname, message);
}
BX_PANIC((buffer));
}
ssize_t sparse_image_t::write (const void* buf, size_t count)
{
//showpagetable(pagetable, header.numpages);
ssize_t total_written = 0;
uint32 update_pagetable_start = position_virtual_page;
uint32 update_pagetable_count = 0;
if (bx_dbg.disk)
BX_DEBUG(("sparse_image_t.write %ld bytes", (long)count));
while (count != 0)
{
size_t can_write = pagesize - position_page_offset;
if (count < can_write) can_write = count;
BX_ASSERT (can_write != 0);
if (position_physical_page == SPARSE_PAGE_NOT_ALLOCATED)
{
// We just add on another page at the end of the file
// Reclamation, compaction etc should currently be done off-line
size_t data_size = underlying_filesize - data_start;
BX_ASSERT((data_size % pagesize) == 0);
uint32 data_size_pages = data_size / pagesize;
uint32 next_data_page = data_size_pages;
pagetable[position_virtual_page] = htod32(next_data_page);
position_physical_page = next_data_page;
off_t page_file_start = data_start + (position_physical_page << pagesize_shift);
if (parent_image != NULL)
{
// If we have a parent, we must merge our portion with the parent
void * writebuffer = NULL;
if (can_write == pagesize)
{
writebuffer = (void *) buf;
}
else
{
writebuffer = malloc(pagesize);
if (writebuffer == NULL)
panic("Cannot allocate sufficient memory for page-merge in write");
// Read entire page - could optimize, but simple for now
parent_image->read_page_fragment(position_virtual_page, 0, pagesize, writebuffer);
void * dest_start = ((uint8 *) writebuffer) + position_page_offset;
memcpy(dest_start, buf, can_write);
}
int ret;
ret = ::lseek(fd, page_file_start, SEEK_SET);
// underlying_current_filepos update deferred
if (-1 == ret) panic(strerror(errno));
ret = ::write(fd, writebuffer, pagesize);
if (-1 == ret) panic(strerror(errno));
if (pagesize != (uint32)ret) panic("failed to write entire merged page to disk");
if (can_write != pagesize)
{
free(writebuffer);
}
}
else
{
// We need to write a zero page because read has been returning zeroes
// We seek as close to the page end as possible, and then write a little
// This produces a sparse file which has blanks
// Also very quick, even when pagesize is massive
int ret;
ret = ::lseek(fd, page_file_start + pagesize - 4, SEEK_SET);
// underlying_current_filepos update deferred
if (-1 == ret) panic(strerror(errno));
uint32 zero = 0;
ret = ::write(fd, &zero, 4);
if (-1 == ret) panic(strerror(errno));
if (4 != ret) panic("failed to write entire blank page to disk");
}
update_pagetable_count = (position_virtual_page - update_pagetable_start) + 1;
underlying_filesize = underlying_current_filepos = page_file_start + pagesize;
}
BX_ASSERT(position_physical_page != SPARSE_PAGE_NOT_ALLOCATED);
off_t physical_offset = get_physical_offset();
if (physical_offset != underlying_current_filepos)
{
int ret = ::lseek(fd, physical_offset, SEEK_SET);
// underlying_current_filepos update deferred
if (ret == -1)
panic(strerror(errno));
}
//printf("Writing at position %ld size %d\n", (long) physical_offset, can_write);
ssize_t writeret = ::write(fd, buf, can_write);
if (writeret == -1)
{
panic(strerror(errno));
}
if ((size_t)writeret != can_write)
{
panic("could not write block contents to file");
}
underlying_current_filepos = physical_offset + can_write;
total_written += can_write;
position_page_offset += can_write;
if (position_page_offset == pagesize)
{
position_page_offset = 0;
set_virtual_page(position_virtual_page + 1);
}
BX_ASSERT(position_page_offset < pagesize);
buf = (((uint8 *) buf) + can_write);
count -= can_write;
}
if (update_pagetable_count != 0)
{
bool done = false;
off_t pagetable_write_from = sizeof(header) + (sizeof(uint32) * update_pagetable_start);
size_t write_bytecount = update_pagetable_count * sizeof(uint32);
#ifdef _POSIX_MAPPED_FILES
if (mmap_header != NULL)
{
// Sync from the beginning of the page
size_t system_page_offset = pagetable_write_from & system_pagesize_mask;
void * start = ((uint8 *) mmap_header + pagetable_write_from - system_page_offset);
int ret = msync(start, system_page_offset + write_bytecount, MS_ASYNC);
if (ret != 0)
panic(strerror(errno));
done = true;
}
#endif
if (!done)
{
int ret = ::lseek(fd, pagetable_write_from, SEEK_SET);
// underlying_current_filepos update deferred
if (ret == -1) panic(strerror(errno));
//printf("Writing header at position %ld size %ld\n", (long) pagetable_write_from, (long) write_bytecount);
ret = ::write(fd, &pagetable[update_pagetable_start], write_bytecount);
if (ret == -1) panic(strerror(errno));
if ((size_t)ret != write_bytecount) panic("could not write entire updated block header");
underlying_current_filepos = pagetable_write_from + write_bytecount;
}
}
return total_written;
}
#if DLL_HD_SUPPORT
/*** dll_image_t function definitions ***/
/*
function vdisk_open(path:PChar;numclusters,clustersize:integer):integer;
procedure vdisk_read(vunit:integer;blk:integer;var buf:TBlock);
procedure vdisk_write(vunit:integer;blk:integer;var buf:TBlock);
procedure vdisk_close(vunit:integer);
*/
HINSTANCE hlib_vdisk = 0;
int (*vdisk_open) (const char *path,int numclusters,int clustersize);
void (*vdisk_read) (int vunit,int blk,void *buf);
void (*vdisk_write) (int vunit,int blk,const void *buf);
void (*vdisk_close) (int vunit);
int dll_image_t::open (const char* pathname)
{
if (hlib_vdisk == 0) {
hlib_vdisk = LoadLibrary("vdisk.dll");
if (hlib_vdisk != 0) {
vdisk_read = (void (*)(int,int,void*)) GetProcAddress(hlib_vdisk,"vdisk_read");
vdisk_write = (void (*)(int,int,const void*)) GetProcAddress(hlib_vdisk,"vdisk_write");
vdisk_open = (int (*)(const char *,int,int)) GetProcAddress(hlib_vdisk,"vdisk_open");
vdisk_close = (void (*)(int)) GetProcAddress(hlib_vdisk,"vdisk_close");
}
}
if (hlib_vdisk != 0) {
vunit = vdisk_open(pathname,0x10000,64);
vblk = 0;
} else {
vunit = -2;
}
return vunit;
}
void dll_image_t::close ()
{
if (vunit >= 0 && hlib_vdisk != 0) {
vdisk_close(vunit);
}
}
off_t dll_image_t::lseek (off_t offset, int whence)
{
vblk = offset >> 9;
return 0;
}
ssize_t dll_image_t::read (void* buf, size_t count)
{
if (vunit >= 0 && hlib_vdisk != 0) {
vdisk_read(vunit,vblk,buf);
return count;
} else {
return -1;
}
}
ssize_t dll_image_t::write (const void* buf, size_t count)
{
if (vunit >= 0 && hlib_vdisk != 0) {
vdisk_write(vunit,vblk,buf);
return count;
} else {
return -1;
}
}
#endif // DLL_HD_SUPPORT
error_recovery_t::error_recovery_t ()
{
if (sizeof(error_recovery_t) != 8) {
BX_PANIC(("error_recovery_t has size != 8"));
}
data[0] = 0x01;
data[1] = 0x06;
data[2] = 0x00;
data[3] = 0x05; // Try to recover 5 times
data[4] = 0x00;
data[5] = 0x00;
data[6] = 0x00;
data[7] = 0x00;
}
uint16 BX_CPP_AttrRegparmN(1)
read_16bit(const uint8* buf)
{
return (buf[0] << 8) | buf[1];
}
uint32 BX_CPP_AttrRegparmN(1)
read_32bit(const uint8* buf)
{
return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
}
// redolog implementation
redolog_t::redolog_t ()
{
fd = -1;
catalog = NULL;
bitmap = NULL;
extent_index = (Bit32u)0;
extent_offset = (Bit32u)0;
extent_next = (Bit32u)0;
}
void
redolog_t::print_header()
{
BX_INFO(("redolog : Standard Header : magic='%s', type='%s', subtype='%s', version = %d.%d",
header.standard.magic, header.standard.type, header.standard.subtype,
dtoh32(header.standard.version)/0x10000,
dtoh32(header.standard.version)%0x10000));
BX_INFO(("redolog : Specific Header : #entries=%d, bitmap size=%d, exent size = %d disk size = %lld",
dtoh32(header.specific.catalog),
dtoh32(header.specific.bitmap),
dtoh32(header.specific.extent),
dtoh64(header.specific.disk)));
}
int
redolog_t::make_header (const char* type, Bit64u size)
{
Bit32u entries, extent_size, bitmap_size;
Bit64u maxsize;
Bit32u flip=0;
// Set standard header values
strcpy((char*)header.standard.magic, STANDARD_HEADER_MAGIC);
strcpy((char*)header.standard.type, REDOLOG_TYPE);
strcpy((char*)header.standard.subtype, type);
header.standard.version = htod32(STANDARD_HEADER_VERSION);
header.standard.header = htod32(STANDARD_HEADER_SIZE);
entries = 512;
bitmap_size = 1;
// Compute #entries and extent size values
do {
extent_size = 8 * bitmap_size * 512;
header.specific.catalog = htod32(entries);
header.specific.bitmap = htod32(bitmap_size);
header.specific.extent = htod32(extent_size);
maxsize = (Bit64u)entries * (Bit64u)extent_size;
flip++;
if(flip&0x01) bitmap_size *= 2;
else entries *= 2;
} while (maxsize < size);
header.specific.disk = htod64(size);
print_header();
catalog = (Bit32u*)malloc(dtoh32(header.specific.catalog) * sizeof(Bit32u));
bitmap = (Bit8u*)malloc(dtoh32(header.specific.bitmap));
if ((catalog == NULL) || (bitmap==NULL))
BX_PANIC(("redolog : could not malloc catalog or bitmap"));
for (Bit32u i=0; i<dtoh32(header.specific.catalog); i++)
catalog[i] = htod32(REDOLOG_PAGE_NOT_ALLOCATED);
bitmap_blocs = 1 + (dtoh32(header.specific.bitmap) - 1) / 512;
extent_blocs = 1 + (dtoh32(header.specific.extent) - 1) / 512;
BX_DEBUG(("redolog : each bitmap is %d blocs", bitmap_blocs));
BX_DEBUG(("redolog : each extent is %d blocs", extent_blocs));
return 0;
}
int
redolog_t::create (const char* filename, const char* type, Bit64u size)
{
int filedes;
BX_INFO(("redolog : creating redolog %s", filename));
filedes = ::open(filename, O_RDWR | O_CREAT | O_TRUNC
#ifdef O_BINARY
| O_BINARY
#endif
, S_IWUSR | S_IRUSR | S_IRGRP | S_IWGRP);
return create(filedes, type, size);
}
int
redolog_t::create (int filedes, const char* type, Bit64u size)
{
fd = filedes;
if (fd < 0)
{
// open failed.
return -1;
}
if (make_header(type, size) < 0)
{
return -1;
}
// Write header
::write(fd, &header, dtoh32(header.standard.header));
// Write catalog
// FIXME could mmap
::write(fd, catalog, dtoh32(header.specific.catalog) * sizeof (Bit32u));
return 0;
}
int
redolog_t::open (const char* filename, const char *type, Bit64u size)
{
int res;
fd = ::open(filename, O_RDWR
#ifdef O_BINARY
| O_BINARY
#endif
);
if (fd < 0)
{
BX_INFO(("redolog : could not open image %s", filename));
// open failed.
return -1;
}
BX_INFO(("redolog : open image %s", filename));
res = ::read(fd, &header, sizeof(header));
if (res != STANDARD_HEADER_SIZE)
{
BX_PANIC(("redolog : could not read header"));
return -1;
}
print_header();
if (strcmp((char*)header.standard.magic, STANDARD_HEADER_MAGIC) != 0)
{
BX_PANIC(("redolog : Bad header magic"));
return -1;
}
if (strcmp((char*)header.standard.type, REDOLOG_TYPE) != 0)
{
BX_PANIC(("redolog : Bad header type"));
return -1;
}
if (strcmp((char*)header.standard.subtype, type) != 0)
{
BX_PANIC(("redolog : Bad header subtype"));
return -1;
}
if (dtoh32(header.standard.version) != STANDARD_HEADER_VERSION)
{
BX_PANIC(("redolog : Bad header version"));
return -1;
}
catalog = (Bit32u*)malloc(dtoh32(header.specific.catalog) * sizeof(Bit32u));
// FIXME could mmap
::lseek(fd,dtoh32(header.standard.header),SEEK_SET);
res = ::read(fd, catalog, dtoh32(header.specific.catalog) * sizeof(Bit32u)) ;
if (res != (ssize_t)(dtoh32(header.specific.catalog) * sizeof(Bit32u)))
{
BX_PANIC(("redolog : could not read catalog %d=%d",res, dtoh32(header.specific.catalog)));
return -1;
}
// check last used extent
extent_next = 0;
for (Bit32u i=0; i < dtoh32(header.specific.catalog); i++)
{
if (dtoh32(catalog[extent_index]) != REDOLOG_PAGE_NOT_ALLOCATED)
{
if (dtoh32(catalog[extent_index]) >= extent_next)
extent_next = dtoh32(catalog[extent_index]) + 1;
}
}
BX_INFO(("redolog : next extent will be at index %d",extent_next));
// memory used for storing bitmaps
bitmap = (Bit8u *)malloc(dtoh32(header.specific.bitmap));
bitmap_blocs = 1 + (dtoh32(header.specific.bitmap) - 1) / 512;
extent_blocs = 1 + (dtoh32(header.specific.extent) - 1) / 512;
BX_DEBUG(("redolog : each bitmap is %d blocs", bitmap_blocs));
BX_DEBUG(("redolog : each extent is %d blocs", extent_blocs));
return 0;
}
void
redolog_t::close ()
{
if (fd >= 0)
::close(fd);
if (catalog != NULL)
free(catalog);
if (bitmap != NULL)
free(bitmap);
}
off_t
redolog_t::lseek (off_t offset, int whence)
{
if ((offset % 512) != 0) {
BX_PANIC( ("redolog : lseek HD with offset not multiple of 512"));
return -1;
}
if (whence != SEEK_SET) {
BX_PANIC( ("redolog : lseek HD with whence not SEEK_SET"));
return -1;
}
if (offset > (off_t)dtoh64(header.specific.disk))
{
BX_PANIC(("redolog : lseek to byte %ld failed", (long)offset));
return -1;
}
extent_index = offset / dtoh32(header.specific.extent);
extent_offset = (offset % dtoh32(header.specific.extent)) / 512;
BX_DEBUG(("redolog : lseeking extent index %d, offset %d",extent_index, extent_offset));
return offset;
}
ssize_t
redolog_t::read (void* buf, size_t count)
{
off_t bloc_offset, bitmap_offset;
if (count != 512)
BX_PANIC( ("redolog : read HD with count not 512"));
BX_DEBUG(("redolog : reading index %d, mapping to %d", extent_index, dtoh32(catalog[extent_index])));
if (dtoh32(catalog[extent_index]) == REDOLOG_PAGE_NOT_ALLOCATED)
{
// page not allocated
return 0;
}
bitmap_offset = (off_t)STANDARD_HEADER_SIZE + (dtoh32(header.specific.catalog) * sizeof(Bit32u));
bitmap_offset += (off_t)512 * dtoh32(catalog[extent_index]) * (extent_blocs + bitmap_blocs);
bloc_offset = bitmap_offset + ((off_t)512 * (bitmap_blocs + extent_offset));
BX_DEBUG(("redolog : bitmap offset is %x", (Bit32u)bitmap_offset));
BX_DEBUG(("redolog : bloc offset is %x", (Bit32u)bloc_offset));
// FIXME if same extent_index as before we can skip bitmap read
::lseek(fd, bitmap_offset, SEEK_SET);
if (::read(fd, bitmap, dtoh32(header.specific.bitmap)) != (ssize_t)dtoh32(header.specific.bitmap))
{
BX_PANIC(("redolog : failed to read bitmap for extent %d", extent_index));
return 0;
}
if ( ((bitmap[extent_offset/8] >> (extent_offset%8)) & 0x01) == 0x00 )
{
BX_DEBUG(("read not in redolog"));
// bitmap says bloc not in reloglog
return 0;
}
::lseek(fd, bloc_offset, SEEK_SET);
return (::read(fd, buf, count));
}
ssize_t
redolog_t::write (const void* buf, size_t count)
{
Bit32u i;
off_t bloc_offset, bitmap_offset, catalog_offset;
ssize_t written;
bx_bool update_catalog = 0;
if (count != 512)
BX_PANIC( ("redolog : write HD with count not 512"));
BX_DEBUG(("redolog : writing index %d, mapping to %d", extent_index, dtoh32(catalog[extent_index])));
if (dtoh32(catalog[extent_index]) == REDOLOG_PAGE_NOT_ALLOCATED)
{
if(extent_next >= dtoh32(header.specific.catalog))
{
BX_PANIC(("redolog : can't allocate new extent... catalog is full"));
return 0;
}
BX_DEBUG(("redolog : allocating new extent at %d", extent_next));
// Extent not allocated, allocate new
catalog[extent_index] = htod32(extent_next);
extent_next += 1;
char *zerobuffer = (char*)malloc(512);
memset(zerobuffer, 0, 512);
// Write bitmap
bitmap_offset = (off_t)STANDARD_HEADER_SIZE + (dtoh32(header.specific.catalog) * sizeof(Bit32u));
bitmap_offset += (off_t)512 * dtoh32(catalog[extent_index]) * (extent_blocs + bitmap_blocs);
::lseek(fd, bitmap_offset, SEEK_SET);
for(i=0; i<bitmap_blocs; i++)
{
::write(fd, zerobuffer, 512);
}
// Write extent
for(i=0; i<extent_blocs; i++)
{
::write(fd, zerobuffer, 512);
}
free(zerobuffer);
update_catalog = 1;
}
bitmap_offset = (off_t)STANDARD_HEADER_SIZE + (dtoh32(header.specific.catalog) * sizeof(Bit32u));
bitmap_offset += (off_t)512 * dtoh32(catalog[extent_index]) * (extent_blocs + bitmap_blocs);
bloc_offset = bitmap_offset + ((off_t)512 * (bitmap_blocs + extent_offset));
BX_DEBUG(("redolog : bitmap offset is %x", (Bit32u)bitmap_offset));
BX_DEBUG(("redolog : bloc offset is %x", (Bit32u)bloc_offset));
// Write bloc
::lseek(fd, bloc_offset, SEEK_SET);
written = ::write(fd, buf, count);
// Write bitmap
// FIXME if same extent_index as before we can skip bitmap read
::lseek(fd, bitmap_offset, SEEK_SET);
if (::read(fd, bitmap, dtoh32(header.specific.bitmap)) != (ssize_t)dtoh32(header.specific.bitmap))
{
BX_PANIC(("redolog : failed to read bitmap for extent %d", extent_index));
return 0;
}
// If bloc does not belong to extent yet
if ( ((bitmap[extent_offset/8] >> (extent_offset%8)) & 0x01) == 0x00 )
{
bitmap[extent_offset/8] |= 1 << (extent_offset%8);
::lseek(fd, bitmap_offset, SEEK_SET);
::write(fd, bitmap, dtoh32(header.specific.bitmap));
}
// Write catalog
if (update_catalog)
{
// FIXME if mmap
catalog_offset = (off_t)STANDARD_HEADER_SIZE + (extent_index * sizeof(Bit32u));
BX_DEBUG(("redolog : writing catalog at offset %x", (Bit32u)catalog_offset));
::lseek(fd, catalog_offset, SEEK_SET);
::write(fd, &catalog[extent_index], sizeof(Bit32u));
}
return written;
}
/*** growing_image_t function definitions ***/
growing_image_t::growing_image_t(Bit64u _size)
{
redolog = new redolog_t();
size = _size;
}
int growing_image_t::open (const char* pathname)
{
int filedes = redolog->open(pathname,REDOLOG_SUBTYPE_GROWING,size);
BX_INFO(("'growing' disk opened, growing file is '%s'", pathname));
return filedes;
}
void growing_image_t::close ()
{
redolog->close();
}
off_t growing_image_t::lseek (off_t offset, int whence)
{
return redolog->lseek(offset, whence);
}
ssize_t growing_image_t::read (void* buf, size_t count)
{
memset(buf, 0, count);
redolog->read((char*) buf, count);
return count;
}
ssize_t growing_image_t::write (const void* buf, size_t count)
{
return redolog->write((char*) buf, count);
}
/*** undoable_image_t function definitions ***/
undoable_image_t::undoable_image_t(Bit64u _size, const char* _redolog_name)
{
redolog = new redolog_t();
ro_disk = new default_image_t();
size = _size;
redolog_name = NULL;
if (_redolog_name != NULL) {
if (strcmp(_redolog_name,"") != 0) {
redolog_name = strdup(_redolog_name);
}
}
}
int undoable_image_t::open (const char* pathname)
{
char *logname=NULL;
if (ro_disk->open(pathname, O_RDONLY)<0)
return -1;
// if redolog name was set
if ( redolog_name != NULL) {
if ( strcmp(redolog_name, "") != 0 ) {
logname = (char*)malloc(strlen(redolog_name) + 1);
strcpy (logname, redolog_name);
}
}
// Otherwise we make up the redolog filename from the pathname
if ( logname == NULL) {
logname = (char*)malloc(strlen(pathname) + UNDOABLE_REDOLOG_EXTENSION_LENGTH + 1);
sprintf (logname, "%s%s", pathname, UNDOABLE_REDOLOG_EXTENSION);
}
if (redolog->open(logname,REDOLOG_SUBTYPE_UNDOABLE,size) < 0)
{
if (redolog->create(logname, REDOLOG_SUBTYPE_UNDOABLE, size) < 0)
{
BX_PANIC(("Can't open or create redolog '%s'",logname));
return -1;
}
}
BX_INFO(("'undoable' disk opened: ro-file is '%s', redolog is '%s'", pathname, logname));
free(logname);
return 0;
}
void undoable_image_t::close ()
{
redolog->close();
ro_disk->close();
if (redolog_name!=NULL)
free(redolog_name);
}
off_t undoable_image_t::lseek (off_t offset, int whence)
{
redolog->lseek(offset, whence);
return ro_disk->lseek(offset, whence);
}
ssize_t undoable_image_t::read (void* buf, size_t count)
{
// This should be fixed if count != 512
if ((size_t)redolog->read((char*) buf, count) != count)
return ro_disk->read((char*) buf, count);
else
return count;
}
ssize_t undoable_image_t::write (const void* buf, size_t count)
{
return redolog->write((char*) buf, count);
}
/*** volatile_image_t function definitions ***/
volatile_image_t::volatile_image_t(Bit64u _size, const char* _redolog_name)
{
redolog = new redolog_t();
ro_disk = new default_image_t();
size = _size;
redolog_temp = NULL;
redolog_name = NULL;
if (_redolog_name != NULL) {
if (strcmp(_redolog_name,"") != 0) {
redolog_name = strdup(_redolog_name);
}
}
}
int volatile_image_t::open (const char* pathname)
{
int filedes;
const char *logname=NULL;
if (ro_disk->open(pathname, O_RDONLY)<0)
return -1;
// if redolog name was set
if ( redolog_name != NULL) {
if ( strcmp(redolog_name, "") != 0 ) {
logname = redolog_name;
}
}
// otherwise use pathname as template
if (logname == NULL) {
logname = pathname;
}
redolog_temp = (char*)malloc(strlen(logname) + VOLATILE_REDOLOG_EXTENSION_LENGTH + 1);
sprintf (redolog_temp, "%s%s", logname, VOLATILE_REDOLOG_EXTENSION);
filedes = mkstemp (redolog_temp);
if (filedes < 0)
{
BX_PANIC(("Can't create volatile redolog '%s'", redolog_temp));
return -1;
}
if (redolog->create(filedes, REDOLOG_SUBTYPE_VOLATILE, size) < 0)
{
BX_PANIC(("Can't create volatile redolog '%s'", redolog_temp));
return -1;
}
#if (!defined(WIN32)) && !BX_WITH_MACOS
// on unix it is legal to delete an open file
unlink(redolog_temp);
#endif
BX_INFO(("'volatile' disk opened: ro-file is '%s', redolog is '%s'", pathname, redolog_temp));
return 0;
}
void volatile_image_t::close ()
{
redolog->close();
ro_disk->close();
#if defined(WIN32) || BX_WITH_MACOS
// on non-unix we have to wait till the file is closed to delete it
unlink(redolog_temp);
#endif
if (redolog_temp!=NULL)
free(redolog_temp);
if (redolog_name!=NULL)
free(redolog_name);
}
off_t volatile_image_t::lseek (off_t offset, int whence)
{
redolog->lseek(offset, whence);
return ro_disk->lseek(offset, whence);
}
ssize_t volatile_image_t::read (void* buf, size_t count)
{
// This should be fixed if count != 512
if ((size_t)redolog->read((char*) buf, count) != count)
return ro_disk->read((char*) buf, count);
else
return count;
}
ssize_t volatile_image_t::write (const void* buf, size_t count)
{
return redolog->write((char*) buf, count);
}
#if BX_COMPRESSED_HD_SUPPORT
/*** z_ro_image_t function definitions ***/
z_ro_image_t::z_ro_image_t()
{
offset = (off_t)0;
}
int z_ro_image_t::open (const char* pathname)
{
fd = ::open(pathname, O_RDONLY
#ifdef O_BINARY
| O_BINARY
#endif
);
if(fd < 0)
{
BX_PANIC(("Could not open '%s' file", pathname));
return fd;
}
gzfile = gzdopen(fd, "rb");
}
void z_ro_image_t::close ()
{
if (fd > -1) {
gzclose(gzfile);
// ::close(fd);
}
}
off_t z_ro_image_t::lseek (off_t _offset, int whence)
{
// Only SEEK_SET supported
if (whence != SEEK_SET)
{
BX_PANIC(("lseek on compressed images : only SEEK_SET supported"));
}
// Seeking is expensive on compressed files, so we do it
// only when necessary, at the latest moment
offset = _offset;
return offset;
}
ssize_t z_ro_image_t::read (void* buf, size_t count)
{
gzseek(gzfile, offset, SEEK_SET);
return gzread(gzfile, buf, count);
}
ssize_t z_ro_image_t::write (const void* buf, size_t count)
{
BX_PANIC(("z_ro_image: write not supported"));
return 0;
}
/*** z_undoable_image_t function definitions ***/
z_undoable_image_t::z_undoable_image_t(Bit64u _size, const char* _redolog_name)
{
redolog = new redolog_t();
ro_disk = new z_ro_image_t();
size = _size;
redolog_name = NULL;
if (_redolog_name != NULL) {
if (strcmp(_redolog_name,"") != 0) {
redolog_name = strdup(_redolog_name);
}
}
}
int z_undoable_image_t::open (const char* pathname)
{
char *logname=NULL;
if (ro_disk->open(pathname)<0)
return -1;
// If redolog name was set
if ( redolog_name != NULL) {
if ( strcmp(redolog_name, "") != 0) {
logname = (char*)malloc(strlen(redolog_name) + 1);
strcpy (logname, redolog_name);
}
}
// Otherwise we make up the redolog filename from the pathname
if ( logname == NULL) {
logname = (char*)malloc(strlen(pathname) + UNDOABLE_REDOLOG_EXTENSION_LENGTH + 1);
sprintf (logname, "%s%s", pathname, UNDOABLE_REDOLOG_EXTENSION);
}
if (redolog->open(logname,REDOLOG_SUBTYPE_UNDOABLE,size) < 0)
{
if (redolog->create(logname, REDOLOG_SUBTYPE_UNDOABLE, size) < 0)
{
BX_PANIC(("Can't open or create redolog '%s'",logname));
return -1;
}
}
BX_INFO(("'z-undoable' disk opened, z-ro-file is '%s', redolog is '%s'", pathname, logname));
free(logname);
return 0;
}
void z_undoable_image_t::close ()
{
redolog->close();
ro_disk->close();
if (redolog_name!=NULL)
free(redolog_name);
}
off_t z_undoable_image_t::lseek (off_t offset, int whence)
{
redolog->lseek(offset, whence);
return ro_disk->lseek(offset, whence);
}
ssize_t z_undoable_image_t::read (void* buf, size_t count)
{
// This should be fixed if count != 512
if (redolog->read((char*) buf, count) != count)
return ro_disk->read((char*) buf, count);
else
return count;
}
ssize_t z_undoable_image_t::write (const void* buf, size_t count)
{
return redolog->write((char*) buf, count);
}
/*** z_volatile_image_t function definitions ***/
z_volatile_image_t::z_volatile_image_t(Bit64u _size, const char* _redolog_name)
{
redolog = new redolog_t();
ro_disk = new z_ro_image_t();
size = _size;
redolog_temp = NULL;
redolog_name = NULL;
if (_redolog_name != NULL) {
if (strcmp(_redolog_name,"") != 0) {
redolog_name = strdup(_redolog_name);
}
}
}
int z_volatile_image_t::open (const char* pathname)
{
int filedes;
const char *logname=NULL;
if (ro_disk->open(pathname)<0)
return -1;
// if redolog name was set
if ( redolog_name != NULL) {
if ( strcmp(redolog_name, "") !=0 ) {
logname = redolog_name;
}
}
// otherwise use pathname as template
if (logname == NULL) {
logname = pathname;
}
redolog_temp = (char*)malloc(strlen(logname) + VOLATILE_REDOLOG_EXTENSION_LENGTH + 1);
sprintf (redolog_temp, "%s%s", logname, VOLATILE_REDOLOG_EXTENSION);
filedes = mkstemp (redolog_temp);
if (filedes < 0)
{
BX_PANIC(("Can't create volatile redolog '%s'", redolog_temp));
return -1;
}
if (redolog->create(filedes, REDOLOG_SUBTYPE_VOLATILE, size) < 0)
{
BX_PANIC(("Can't create volatile redolog '%s'", redolog_temp));
return -1;
}
#if (!defined(WIN32)) && !BX_WITH_MACOS
// on unix it is legal to delete an open file
unlink(redolog_temp);
#endif
BX_INFO(("'z-volatile' disk opened: z-ro-file is '%s', redolog is '%s'", pathname, redolog_temp));
return 0;
}
void z_volatile_image_t::close ()
{
redolog->close();
ro_disk->close();
#if defined(WIN32) || BX_WITH_MACOS
// on non-unix we have to wait till the file is closed to delete it
unlink(redolog_temp);
#endif
if (redolog_temp!=NULL)
free(redolog_temp);
if (redolog_name!=NULL)
free(redolog_name);
}
off_t z_volatile_image_t::lseek (off_t offset, int whence)
{
redolog->lseek(offset, whence);
return ro_disk->lseek(offset, whence);
}
ssize_t z_volatile_image_t::read (void* buf, size_t count)
{
// This should be fixed if count != 512
if (redolog->read((char*) buf, count) != count)
return ro_disk->read((char*) buf, count);
else
return count;
}
ssize_t z_volatile_image_t::write (const void* buf, size_t count)
{
return redolog->write((char*) buf, count);
}
#endif
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