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Bochs/bochs/iodev/harddrv.cc
Volker Ruppert 674447c186 DLL HD support rewritten and enabled for WIN32 
TODO: put sample code for VDISK.DLL into the patches directory
2013-03-08 18:25:32 +00:00

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/////////////////////////////////////////////////////////////////////////
// $Id$
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2002-2013 The Bochs Project
//
// 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 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 "iodev.h"
#include "harddrv.h"
#include "hdimage/hdimage.h"
#include "hdimage/cdrom.h"
#define LOG_THIS theHardDrive->
#define INDEX_PULSE_CYCLE 10
#define PACKET_SIZE 12
// some packet handling macros
#define EXTRACT_FIELD(arr,byte,start,num_bits) (((arr)[(byte)] >> (start)) & ((1 << (num_bits)) - 1))
#define get_packet_field(controller,b,s,n) (EXTRACT_FIELD((controller->buffer),(b),(s),(n)))
#define get_packet_byte(controller,b) (controller->buffer[(b)])
#define get_packet_word(controller,b) (((Bit16u)controller->buffer[(b)] << 8) | controller->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 { Bit8u _a = a; \
BX_CONTROLLER((c),0).hob.feature = BX_CONTROLLER((c),0).features; \
BX_CONTROLLER((c),1).hob.feature = BX_CONTROLLER((c),1).features; \
BX_CONTROLLER((c),0).features = _a; BX_CONTROLLER((c),1).features = _a; } while(0)
#define WRITE_SECTOR_COUNT(c,a) do { Bit8u _a = a; \
BX_CONTROLLER((c),0).hob.nsector = BX_CONTROLLER((c),0).sector_count; \
BX_CONTROLLER((c),1).hob.nsector = BX_CONTROLLER((c),1).sector_count; \
BX_CONTROLLER((c),0).sector_count = _a; BX_CONTROLLER((c),1).sector_count = _a; } while(0)
#define WRITE_SECTOR_NUMBER(c,a) do { Bit8u _a = a; \
BX_CONTROLLER((c),0).hob.sector = BX_CONTROLLER((c),0).sector_no; \
BX_CONTROLLER((c),1).hob.sector = BX_CONTROLLER((c),1).sector_no; \
BX_CONTROLLER((c),0).sector_no = _a; BX_CONTROLLER((c),1).sector_no = _a; } while(0)
#define WRITE_CYLINDER_LOW(c,a) do { Bit8u _a = a; \
BX_CONTROLLER((c),0).hob.lcyl = (Bit8u)(BX_CONTROLLER((c),0).cylinder_no & 0xff); \
BX_CONTROLLER((c),1).hob.lcyl = (Bit8u)(BX_CONTROLLER((c),1).cylinder_no & 0xff); \
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 { Bit16u _a = a; \
BX_CONTROLLER((c),0).hob.hcyl = (Bit8u)(BX_CONTROLLER((c),0).cylinder_no >> 8); \
BX_CONTROLLER((c),1).hob.hcyl = (Bit8u)(BX_CONTROLLER((c),1).cylinder_no >> 8); \
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 { Bit8u _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 { Bit8u _a = a; BX_CONTROLLER((c),0).lba_mode = _a; BX_CONTROLLER((c),1).lba_mode = _a; } while(0)
BX_CPP_INLINE Bit16u read_16bit(const Bit8u* buf)
{
return (buf[0] << 8) | buf[1];
}
BX_CPP_INLINE Bit32u read_32bit(const Bit8u* buf)
{
return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
}
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)
{
delete theHardDrive;
}
bx_hard_drive_c::bx_hard_drive_c()
{
put("harddrv", "HD");
for (Bit8u channel=0; channel<BX_MAX_ATA_CHANNEL; channel++) {
for (Bit8u device=0; device<2; device ++) {
channels[channel].drives[device].hdimage = NULL;
#ifdef LOWLEVEL_CDROM
channels[channel].drives[device].cdrom.cd = NULL;
#endif
}
}
seek_timer_index = BX_NULL_TIMER_HANDLE;
}
bx_hard_drive_c::~bx_hard_drive_c()
{
char ata_name[20];
bx_list_c *base;
for (Bit8u channel=0; channel<BX_MAX_ATA_CHANNEL; channel++) {
for (Bit8u device=0; device<2; device ++) {
if (channels[channel].drives[device].hdimage != NULL) {
channels[channel].drives[device].hdimage->close();
delete channels[channel].drives[device].hdimage;
channels[channel].drives[device].hdimage = NULL;
}
#ifdef LOWLEVEL_CDROM
if (channels[channel].drives[device].cdrom.cd != NULL) {
delete channels[channel].drives[device].cdrom.cd;
channels[channel].drives[device].cdrom.cd = NULL;
}
#endif
sprintf(ata_name, "ata.%d.%s", channel, (device==0)?"master":"slave");
base = (bx_list_c*) SIM->get_param(ata_name);
SIM->get_param_string("path", base)->set_handler(NULL);
SIM->get_param_enum("status", base)->set_handler(NULL);
}
}
SIM->get_bochs_root()->remove("hard_drive");
BX_DEBUG(("Exit"));
}
void bx_hard_drive_c::init(void)
{
Bit8u channel, image_mode;
char string[5];
char sbtext[8];
char ata_name[20];
bx_list_c *base;
BX_DEBUG(("Init $Id$"));
for (channel=0; channel<BX_MAX_ATA_CHANNEL; channel++) {
sprintf(ata_name, "ata.%d.resources", channel);
base = (bx_list_c*) SIM->get_param(ata_name);
if (SIM->get_param_bool("enabled", base)->get() == 1) {
BX_HD_THIS channels[channel].ioaddr1 = SIM->get_param_num("ioaddr1", base)->get();
BX_HD_THIS channels[channel].ioaddr2 = SIM->get_param_num("ioaddr2", base)->get();
BX_HD_THIS channels[channel].irq = SIM->get_param_num("irq", base)->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, string);
if (BX_HD_THIS channels[channel].ioaddr1 != 0) {
DEV_register_ioread_handler(this, read_handler,
BX_HD_THIS channels[channel].ioaddr1, string, 6);
DEV_register_iowrite_handler(this, write_handler,
BX_HD_THIS channels[channel].ioaddr1, string, 6);
for (unsigned addr=0x1; addr<=0x7; addr++) {
DEV_register_ioread_handler(this, read_handler,
BX_HD_THIS channels[channel].ioaddr1+addr, string, 1);
DEV_register_iowrite_handler(this, write_handler,
BX_HD_THIS channels[channel].ioaddr1+addr, 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, string, 1);
DEV_register_iowrite_handler(this, write_handler,
BX_HD_THIS channels[channel].ioaddr2+addr, string, 1);
}
}
BX_HD_THIS channels[channel].drive_select = 0;
}
channel = 0;
BX_HD_THIS cdrom_count = 0;
for (channel=0; channel<BX_MAX_ATA_CHANNEL; channel++) {
for (Bit8u device=0; device<2; device ++) {
sprintf(ata_name, "ata.%d.%s", channel, (device==0)?"master":"slave");
base = (bx_list_c*) SIM->get_param(ata_name);
// Initialize controller state, even if device is not present
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).multiple_sectors = 0;
BX_CONTROLLER(channel,device).lba_mode = 0;
BX_CONTROLLER(channel,device).features = 0;
BX_CONTROLLER(channel,device).mdma_mode = 0;
BX_CONTROLLER(channel,device).udma_mode = 0;
// If not present
BX_HD_THIS channels[channel].drives[device].device_type = IDE_NONE;
BX_HD_THIS channels[channel].drives[device].statusbar_id = -1;
BX_HD_THIS channels[channel].drives[device].identify_set = 0;
if (SIM->get_param_enum("type", base)->get() == BX_ATA_DEVICE_NONE) continue;
// Make model string
strncpy((char*)BX_HD_THIS channels[channel].drives[device].model_no,
SIM->get_param_string("model", base)->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, " ");
}
BX_HD_THIS channels[channel].drives[device].model_no[40] = 0;
if (SIM->get_param_enum("type", base)->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;
sprintf(sbtext, "HD:%d-%s", channel, device?"S":"M");
BX_HD_THIS channels[channel].drives[device].statusbar_id =
bx_gui->register_statusitem(sbtext, 1);
int cyl = SIM->get_param_num("cylinders", base)->get();
int heads = SIM->get_param_num("heads", base)->get();
int spt = SIM->get_param_num("spt", base)->get();
Bit64u disk_size = (Bit64u)cyl * heads * spt * 512;
image_mode = SIM->get_param_enum("mode", base)->get();
channels[channel].drives[device].hdimage = DEV_hdimage_init_image(image_mode,
disk_size, SIM->get_param_string("journal", base)->getptr());
if (channels[channel].drives[device].hdimage != NULL) {
BX_INFO(("HD on ata%d-%d: '%s', '%s' mode", channel, device,
SIM->get_param_string("path", base)->getptr(),
hdimage_mode_names[image_mode]));
} else {
// it's safe to return here on failure
return;
}
BX_HD_THIS channels[channel].drives[device].hdimage->cylinders = cyl;
BX_HD_THIS channels[channel].drives[device].hdimage->heads = heads;
BX_HD_THIS channels[channel].drives[device].hdimage->spt = spt;
/* open hard drive image file */
if ((BX_HD_THIS channels[channel].drives[device].hdimage->open(SIM->get_param_string("path", base)->getptr())) < 0) {
BX_PANIC(("ata%d-%d: could not open hard drive image file '%s'", channel, device, SIM->get_param_string("path", base)->getptr()));
return;
}
Bit32u image_caps = BX_HD_THIS channels[channel].drives[device].hdimage->get_capabilities();
if ((image_caps & HDIMAGE_HAS_GEOMETRY) != 0) {
// If the image provides a geometry, always use it.
cyl = BX_HD_THIS channels[channel].drives[device].hdimage->cylinders;
heads = BX_HD_THIS channels[channel].drives[device].hdimage->heads;
spt = BX_HD_THIS channels[channel].drives[device].hdimage->spt;
BX_INFO(("ata%d-%d: image geometry: CHS=%d/%d/%d", channel, device, cyl, heads, spt));
} else {
if ((cyl == 0) && (image_caps & HDIMAGE_AUTO_GEOMETRY)) {
// Autodetect number of cylinders
if ((heads == 0) || (spt == 0)) {
BX_PANIC(("ata%d-%d cannot have zero heads, or sectors/track", channel, device));
}
cyl = (int)(BX_HD_THIS channels[channel].drives[device].hdimage->hd_size / (heads * spt * 512));
disk_size = ((Bit64u)cyl * heads * spt * 512);
BX_HD_THIS channels[channel].drives[device].hdimage->cylinders = cyl;
BX_INFO(("ata%d-%d: autodetect geometry: CHS=%d/%d/%d", channel, device, cyl, heads, spt));
} else {
// Default method: use CHS from configuration.
if (cyl == 0 || heads == 0 || spt == 0) {
BX_PANIC(("ata%d-%d cannot have zero cylinders, heads, or sectors/track", channel, device));
}
BX_INFO(("ata%d-%d: using specified geometry: CHS=%d/%d/%d", channel, device, cyl, heads, spt));
}
if (disk_size > BX_HD_THIS channels[channel].drives[device].hdimage->hd_size) {
BX_PANIC(("ata%d-%d: specified geometry doesn't fit on disk image", channel, device));
} else if (disk_size < BX_HD_THIS channels[channel].drives[device].hdimage->hd_size) {
BX_INFO(("ata%d-%d: extra data outside of CHS address range", channel, device));
}
}
} else if (SIM->get_param_enum("type", base)->get() == BX_ATA_DEVICE_CDROM) {
bx_list_c *cdrom_rt = (bx_list_c*)SIM->get_param(BXPN_MENU_RUNTIME_CDROM);
cdrom_rt->add(base);
base->set_options(base->SERIES_ASK | base->USE_BOX_TITLE);
base->set_runtime_param(1);
SIM->get_param_string("path", base)->set_handler(cdrom_path_handler);
SIM->get_param("path", base)->set_runtime_param(1);
SIM->get_param_enum("status", base)->set_handler(cdrom_status_handler);
SIM->get_param("status", base)->set_runtime_param(1);
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;
sprintf(sbtext, "CD:%d-%s", channel, device?"S":"M");
BX_HD_THIS channels[channel].drives[device].statusbar_id =
bx_gui->register_statusitem(sbtext, 1);
BX_HD_THIS cdrom_count++;
BX_HD_THIS channels[channel].drives[device].device_num = BX_HD_THIS cdrom_count + 48;
// 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 = DEV_hdimage_init_cdrom(SIM->get_param_string("path", base)->getptr());
BX_INFO(("CD on ata%d-%d: '%s'",channel, device, SIM->get_param_string("path", base)->getptr()));
if (SIM->get_param_enum("status", base)->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;
Bit32u capacity = BX_HD_THIS channels[channel].drives[device].cdrom.cd->capacity();
BX_HD_THIS channels[channel].drives[device].cdrom.capacity = capacity;
BX_INFO(("Capacity is %d sectors (%.2f MB)", capacity, (float)capacity / 512.0));
} else {
BX_INFO(("Could not locate CD-ROM, continuing with media not present"));
BX_HD_THIS channels[channel].drives[device].cdrom.ready = 0;
SIM->get_param_enum("status", base)->set(BX_EJECTED);
}
}
else
#endif
{
BX_INFO(("Media not present in CD-ROM drive"));
BX_HD_THIS channels[channel].drives[device].cdrom.ready = 0;
}
}
}
}
// generate CMOS values for hard drive if not using a CMOS image
if (!SIM->get_param_bool(BXPN_CMOSIMAGE_ENABLED)->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_DRIVE(0,0).hdimage->cylinders & 0x00ff));
// AMI BIOS: 1st hard disk #cyl high byte
DEV_cmos_set_reg(0x1c, (BX_DRIVE(0,0).hdimage->cylinders & 0xff00) >> 8);
// AMI BIOS: 1st hard disk #heads
DEV_cmos_set_reg(0x1d, BX_DRIVE(0,0).hdimage->heads);
// 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_DRIVE(0,0).hdimage->heads > 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_DRIVE(0,0).hdimage->spt);
}
//set up cmos for second hard drive
if (BX_DRIVE_IS_HD(0,1)) {
// 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_DRIVE(0,1).hdimage->cylinders & 0x00ff));
// AMI BIOS: 2nd hard disk #cyl high byte
DEV_cmos_set_reg(0x25, (BX_DRIVE(0,1).hdimage->cylinders & 0xff00) >> 8);
// AMI BIOS: 2nd hard disk #heads
DEV_cmos_set_reg(0x26, BX_DRIVE(0,1).hdimage->heads);
// 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_DRIVE(0,1).hdimage->heads > 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_DRIVE(0,1).hdimage->spt);
}
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 ++) {
sprintf(ata_name, "ata.%d.%s", channel, (device==0)?"master":"slave");
base = (bx_list_c*) SIM->get_param(ata_name);
if (SIM->get_param_enum("type", base)->get() != BX_ATA_DEVICE_NONE) {
if (BX_DRIVE_IS_HD(channel,device)) {
Bit16u cylinders = BX_DRIVE(channel,device).hdimage->cylinders;
Bit16u heads = BX_DRIVE(channel,device).hdimage->heads;
Bit16u spt = BX_DRIVE(channel,device).hdimage->spt;
Bit8u translation = SIM->get_param_enum("translation", base)->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 (SIM->get_param_enum(BXPN_BOOTDRIVE1)->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 sequence, bytes 0x38 and 0x3D (needed for cdrom booting)
BX_INFO(("Using boot sequence %s, %s, %s",
SIM->get_param_enum(BXPN_BOOTDRIVE1)->get_selected(),
SIM->get_param_enum(BXPN_BOOTDRIVE2)->get_selected(),
SIM->get_param_enum(BXPN_BOOTDRIVE3)->get_selected()));
DEV_cmos_set_reg(0x3d, SIM->get_param_enum(BXPN_BOOTDRIVE1)->get() |
(SIM->get_param_enum(BXPN_BOOTDRIVE2)->get() << 4));
// Set the signature check flag in cmos, inverted for compatibility
DEV_cmos_set_reg(0x38, SIM->get_param_bool(BXPN_FLOPPYSIGCHECK)->get() |
(SIM->get_param_enum(BXPN_BOOTDRIVE3)->get() << 4));
BX_INFO(("Floppy boot signature check is %sabled",
SIM->get_param_bool(BXPN_FLOPPYSIGCHECK)->get() ? "dis" : "en"));
}
// register timer for HD/CD seek emulation
if (BX_HD_THIS seek_timer_index == BX_NULL_TIMER_HANDLE) {
BX_HD_THIS seek_timer_index =
DEV_register_timer(this, seek_timer_handler, 100000, 0,0, "HD/CD seek");
// TODO !!!
}
BX_HD_THIS pci_enabled = SIM->get_param_bool(BXPN_PCI_ENABLED)->get();
// register handler for correct cdrom parameter handling after runtime config
SIM->register_runtime_config_handler(BX_HD_THIS_PTR, runtime_config_handler);
}
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);
}
}
void bx_hard_drive_c::register_state(void)
{
unsigned i, j;
char cname[4], dname[8];
bx_list_c *chan, *drive, *status;
bx_list_c *list = new bx_list_c(SIM->get_bochs_root(), "hard_drive", "Hard Drive State");
for (i=0; i<BX_MAX_ATA_CHANNEL; i++) {
sprintf(cname, "%d", i);
chan = new bx_list_c(list, cname);
for (j=0; j<2; j++) {
if (BX_DRIVE_IS_PRESENT(i, j)) {
sprintf(dname, "drive%d", j);
drive = new bx_list_c(chan, dname);
if (channels[i].drives[j].hdimage != NULL) {
channels[i].drives[j].hdimage->register_state(drive);
}
new bx_shadow_data_c(drive, "buffer", BX_CONTROLLER(i, j).buffer, MAX_MULTIPLE_SECTORS * 512);
status = new bx_list_c(drive, "status");
new bx_shadow_bool_c(status, "busy", &BX_CONTROLLER(i, j).status.busy);
new bx_shadow_bool_c(status, "drive_ready", &BX_CONTROLLER(i, j).status.drive_ready);
new bx_shadow_bool_c(status, "write_fault", &BX_CONTROLLER(i, j).status.write_fault);
new bx_shadow_bool_c(status, "seek_complete", &BX_CONTROLLER(i, j).status.seek_complete);
new bx_shadow_bool_c(status, "drq", &BX_CONTROLLER(i, j).status.drq);
new bx_shadow_bool_c(status, "corrected_data", &BX_CONTROLLER(i, j).status.corrected_data);
new bx_shadow_bool_c(status, "index_pulse", &BX_CONTROLLER(i, j).status.index_pulse);
new bx_shadow_num_c(status, "index_pulse_count", &BX_CONTROLLER(i, j).status.index_pulse_count);
new bx_shadow_bool_c(status, "err", &BX_CONTROLLER(i, j).status.err);
new bx_shadow_num_c(drive, "error_register", &BX_CONTROLLER(i, j).error_register, BASE_HEX);
new bx_shadow_num_c(drive, "head_no", &BX_CONTROLLER(i, j).head_no, BASE_HEX);
new bx_shadow_num_c(drive, "sector_count", &BX_CONTROLLER(i, j).sector_count, BASE_HEX);
new bx_shadow_num_c(drive, "sector_no", &BX_CONTROLLER(i, j).sector_no, BASE_HEX);
new bx_shadow_num_c(drive, "cylinder_no", &BX_CONTROLLER(i, j).cylinder_no, BASE_HEX);
new bx_shadow_num_c(drive, "buffer_size", &BX_CONTROLLER(i, j).buffer_size, BASE_HEX);
new bx_shadow_num_c(drive, "buffer_index", &BX_CONTROLLER(i, j).buffer_index, BASE_HEX);
new bx_shadow_num_c(drive, "drq_index", &BX_CONTROLLER(i, j).drq_index, BASE_HEX);
new bx_shadow_num_c(drive, "current_command", &BX_CONTROLLER(i, j).current_command, BASE_HEX);
new bx_shadow_num_c(drive, "multiple_sectors", &BX_CONTROLLER(i, j).multiple_sectors, BASE_HEX);
new bx_shadow_bool_c(drive, "lba_mode", &BX_CONTROLLER(i, j).lba_mode);
new bx_shadow_num_c(drive, "packet_dma", &BX_CONTROLLER(i, j).packet_dma, BASE_HEX);
new bx_shadow_bool_c(drive, "control_reset", &BX_CONTROLLER(i, j).control.reset);
new bx_shadow_bool_c(drive, "control_disable_irq", &BX_CONTROLLER(i, j).control.disable_irq);
new bx_shadow_num_c(drive, "reset_in_progress", &BX_CONTROLLER(i, j).reset_in_progress, BASE_HEX);
new bx_shadow_num_c(drive, "features", &BX_CONTROLLER(i, j).features, BASE_HEX);
new bx_shadow_num_c(drive, "mdma_mode", &BX_CONTROLLER(i, j).mdma_mode, BASE_HEX);
new bx_shadow_num_c(drive, "udma_mode", &BX_CONTROLLER(i, j).udma_mode, BASE_HEX);
new bx_shadow_num_c(drive, "hob_feature", &BX_CONTROLLER(i, j).hob.feature, BASE_HEX);
new bx_shadow_num_c(drive, "hob_nsector", &BX_CONTROLLER(i, j).hob.nsector, BASE_HEX);
new bx_shadow_num_c(drive, "hob_sector", &BX_CONTROLLER(i, j).hob.sector, BASE_HEX);
new bx_shadow_num_c(drive, "hob_lcyl", &BX_CONTROLLER(i, j).hob.lcyl, BASE_HEX);
new bx_shadow_num_c(drive, "hob_hcyl", &BX_CONTROLLER(i, j).hob.hcyl, BASE_HEX);
new bx_shadow_num_c(drive, "num_sectors", &BX_CONTROLLER(i, j).num_sectors, BASE_HEX);
new bx_shadow_bool_c(drive, "cdrom_locked", &BX_HD_THIS channels[i].drives[j].cdrom.locked);
}
}
new bx_shadow_num_c(chan, "drive_select", &BX_HD_THIS channels[i].drive_select);
}
}
void bx_hard_drive_c::seek_timer_handler(void *this_ptr)
{
bx_hard_drive_c *class_ptr = (bx_hard_drive_c *) this_ptr;
class_ptr->seek_timer();
}
void bx_hard_drive_c::seek_timer()
{
for (unsigned channel=0; channel<BX_MAX_ATA_CHANNEL; channel++) {
for (unsigned device=0; device<2; device++) {
// TODO: seek emulation
}
}
}
void bx_hard_drive_c::runtime_config_handler(void *this_ptr)
{
bx_hard_drive_c *class_ptr = (bx_hard_drive_c *) this_ptr;
class_ptr->runtime_config();
}
void bx_hard_drive_c::runtime_config(void)
{
char pname[16];
int handle;
bx_bool status;
for (Bit8u channel=0; channel<BX_MAX_ATA_CHANNEL; channel++) {
for (Bit8u device=0; device<2; device++) {
if (BX_HD_THIS channels[channel].drives[device].status_changed) {
handle = (channel << 1) | device;
sprintf(pname, "ata.%d.%s", channel, device ? "slave":"master");
bx_list_c *base = (bx_list_c*) SIM->get_param(pname);
status = SIM->get_param_enum("status", base)->get();
BX_HD_THIS set_cd_media_status(handle, 0);
if (status == BX_INSERTED) {
BX_HD_THIS set_cd_media_status(handle, 1);
}
BX_HD_THIS channels[channel].drives[device].status_changed = 0;
}
}
}
}
#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) {
channel = 0;
if ((address < 0x03f6) || (address > 0x03f7)) {
BX_PANIC(("read: unable to find ATA channel, ioport=0x%04x", address));
} else {
port = address - 0x03e0;
}
}
controller_t *controller = &BX_SELECTED_CONTROLLER(channel);
switch (port) {
case 0x00: // hard disk data (16bit) 0x1f0
if (controller->status.drq == 0) {
BX_ERROR(("IO read(0x%04x) with drq == 0: last command was %02xh",
address, (unsigned) controller->current_command));
return(0);
}
BX_DEBUG(("IO read(0x%04x): current command is %02xh",
address, (unsigned) controller->current_command));
switch (controller->current_command) {
case 0x20: // READ SECTORS, with retries
case 0x21: // READ SECTORS, without retries
case 0xC4: // READ MULTIPLE SECTORS
case 0x24: // READ SECTORS EXT
case 0x29: // READ MULTIPLE EXT
if (controller->buffer_index >= controller->buffer_size)
BX_PANIC(("IO read(0x%04x): buffer_index >= %d", address, controller->buffer_size));
#if BX_SupportRepeatSpeedups
if (DEV_bulk_io_quantum_requested()) {
unsigned transferLen, quantumsMax;
quantumsMax = (controller->buffer_size - controller->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(),
&controller->buffer[controller->buffer_index], transferLen);
DEV_bulk_io_host_addr() += transferLen;
controller->buffer_index += transferLen;
value32 = 0; // Value returned not important;
}
else
#endif
{
value32 = 0L;
switch(io_len){
case 4:
value32 |= (controller->buffer[controller->buffer_index+3] << 24);
value32 |= (controller->buffer[controller->buffer_index+2] << 16);
case 2:
value32 |= (controller->buffer[controller->buffer_index+1] << 8);
value32 |= controller->buffer[controller->buffer_index];
}
controller->buffer_index += io_len;
}
// if buffer completely read
if (controller->buffer_index >= controller->buffer_size) {
// update sector count, sector number, cylinder,
// drive, head, status
// if there are more sectors, read next one in...
//
if ((controller->current_command == 0xC4) ||
(controller->current_command == 0x29)) {
if (controller->num_sectors > controller->multiple_sectors) {
controller->buffer_size = controller->multiple_sectors * 512;
} else {
controller->buffer_size = controller->num_sectors * 512;
}
}
controller->status.busy = 0;
controller->status.drive_ready = 1;
controller->status.write_fault = 0;
controller->status.seek_complete = 1;
controller->status.corrected_data = 0;
controller->status.err = 0;
if (controller->num_sectors==0) {
controller->status.drq = 0;
} else { /* read next one into controller buffer */
controller->status.drq = 1;
controller->status.seek_complete = 1;
if (ide_read_sector(channel, controller->buffer, controller->buffer_size)) {
controller->buffer_index = 0;
raise_interrupt(channel);
}
}
}
GOTO_RETURN_VALUE;
break;
case 0xec: // IDENTIFY DEVICE
case 0xa1:
unsigned index;
controller->status.busy = 0;
controller->status.drive_ready = 1;
controller->status.write_fault = 0;
controller->status.seek_complete = 1;
controller->status.corrected_data = 0;
controller->status.err = 0;
index = controller->buffer_index;
value32 = controller->buffer[index];
index++;
if (io_len >= 2) {
value32 |= (controller->buffer[index] << 8);
index++;
}
if (io_len == 4) {
value32 |= (controller->buffer[index] << 16);
value32 |= (controller->buffer[index+1] << 24);
index += 2;
}
controller->buffer_index = index;
if (controller->buffer_index >= 512) {
controller->status.drq = 0;
BX_DEBUG(("Read all drive ID Bytes ..."));
}
GOTO_RETURN_VALUE;
break;
case 0xa0:
{
unsigned index = controller->buffer_index;
unsigned increment = 0;
// Load block if necessary
if (index >= controller->buffer_size) {
if (index > controller->buffer_size)
BX_PANIC(("index > %d : %d", controller->buffer_size, index));
switch (BX_SELECTED_DRIVE(channel).atapi.command) {
case 0x28: // read (10)
case 0xa8: // read (12)
case 0xbe: // read cd
#ifdef LOWLEVEL_CDROM
if (!BX_SELECTED_DRIVE(channel).cdrom.ready) {
BX_PANIC(("Read with CDROM not ready"));
}
/* set status bar conditions for device */
bx_gui->statusbar_setitem(BX_SELECTED_DRIVE(channel).statusbar_id, 1);
if (!BX_SELECTED_DRIVE(channel).cdrom.cd->read_block(controller->buffer,
BX_SELECTED_DRIVE(channel).cdrom.next_lba,
controller->buffer_size))
{
BX_PANIC(("CDROM: read block %d failed", BX_SELECTED_DRIVE(channel).cdrom.next_lba));
}
BX_SELECTED_DRIVE(channel).cdrom.next_lba++;
BX_SELECTED_DRIVE(channel).cdrom.remaining_blocks--;
if (!BX_SELECTED_DRIVE(channel).cdrom.remaining_blocks) {
BX_DEBUG(("CDROM: last READ block loaded"));
} else {
BX_DEBUG(("CDROM: READ block loaded (%d remaining)",
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 = controller->buffer[index+increment];
increment++;
if (io_len >= 2) {
value32 |= (controller->buffer[index+increment] << 8);
increment++;
}
if (io_len == 4) {
value32 |= (controller->buffer[index+increment] << 16);
value32 |= (controller->buffer[index+increment+1] << 24);
increment += 2;
}
controller->buffer_index = index + increment;
controller->drq_index += increment;
if (controller->drq_index >= (unsigned)BX_SELECTED_DRIVE(channel).atapi.drq_bytes) {
controller->status.drq = 0;
controller->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)
BX_DEBUG(("PACKET drq bytes read"));
controller->interrupt_reason.i_o = 1;
controller->status.busy = 0;
controller->status.drq = 1;
controller->interrupt_reason.c_d = 0;
// set new byte count if last block
if (BX_SELECTED_DRIVE(channel).atapi.total_bytes_remaining < controller->byte_count) {
controller->byte_count = BX_SELECTED_DRIVE(channel).atapi.total_bytes_remaining;
}
BX_SELECTED_DRIVE(channel).atapi.drq_bytes = controller->byte_count;
raise_interrupt(channel);
} else {
// all bytes read
BX_DEBUG(("PACKET all bytes read"));
controller->interrupt_reason.i_o = 1;
controller->interrupt_reason.c_d = 1;
controller->status.drive_ready = 1;
controller->interrupt_reason.rel = 0;
controller->status.busy = 0;
controller->status.drq = 0;
controller->status.err = 0;
raise_interrupt(channel);
}
}
GOTO_RETURN_VALUE;
}
break;
default:
BX_ERROR(("read from 0x%04x: current command is 0x%02x", address,
controller->current_command));
}
break;
case 0x01: // hard disk error register 0x1f1
// -- 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 : controller->error_register;
goto return_value8;
case 0x02: // hard disk sector count / interrupt reason 0x1f2
value8 = (!BX_ANY_IS_PRESENT(channel)) ? 0 : controller->sector_count;
goto return_value8;
case 0x03: // sector number 0x1f3
value8 = (!BX_ANY_IS_PRESENT(channel)) ? 0 : controller->sector_no;
goto return_value8;
case 0x04: // cylinder low 0x1f4
value8 = (!BX_ANY_IS_PRESENT(channel)) ? 0 : (controller->cylinder_no & 0x00ff);
goto return_value8;
case 0x05: // cylinder high 0x1f5
value8 = (!BX_ANY_IS_PRESENT(channel)) ? 0 : controller->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) |
(controller->lba_mode << 6) |
(1 << 5) | // 01b = 512 sector size
(BX_HD_THIS channels[channel].drive_select << 4) |
(controller->head_no << 0);
goto return_value8;
case 0x07: // Hard Disk Status 0x1f7
case 0x16: // Hard Disk Alternate Status 0x3f6
if (!BX_SELECTED_IS_PRESENT(channel)) {
// (mch) Just return zero for these registers
value8 = 0;
} else {
value8 = (
(controller->status.busy << 7) |
(controller->status.drive_ready << 6) |
(controller->status.write_fault << 5) |
(controller->status.seek_complete << 4) |
(controller->status.drq << 3) |
(controller->status.corrected_data << 2) |
(controller->status.index_pulse << 1) |
(controller->status.err));
controller->status.index_pulse_count++;
controller->status.index_pulse = 0;
if (controller->status.index_pulse_count >= INDEX_PULSE_CYCLE) {
controller->status.index_pulse = 1;
controller->status.index_pulse_count = 0;
}
}
if (port == 0x07) {
DEV_pic_lower_irq(BX_HD_THIS channels[channel].irq);
}
goto return_value8;
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;
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
Bit64s logical_sector;
bx_bool prev_control_reset;
bx_bool lba48 = 0;
Bit8u channel = BX_MAX_ATA_CHANNEL;
Bit32u port = 0xff; // undefined
int i;
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;
}
}
switch (io_len) {
case 1:
BX_DEBUG(("8-bit write to %04x = %02x {%s}",
address, value, BX_SELECTED_TYPE_STRING(channel)));
break;
case 2:
BX_DEBUG(("16-bit write to %04x = %04x {%s}",
address, value, BX_SELECTED_TYPE_STRING(channel)));
break;
case 4:
BX_DEBUG(("32-bit write to %04x = %08x {%s}",
address, value, BX_SELECTED_TYPE_STRING(channel)));
break;
default:
BX_DEBUG(("unknown-size write to %04x = %08x {%s}",
address, value, BX_SELECTED_TYPE_STRING(channel)));
break;
}
controller_t *controller = &BX_SELECTED_CONTROLLER(channel);
switch (port) {
case 0x00: // 0x1f0
switch (controller->current_command) {
case 0x30: // WRITE SECTORS
case 0xC5: // WRITE MULTIPLE SECTORS
case 0x34: // WRITE SECTORS EXT
case 0x39: // WRITE MULTIPLE EXT
if (controller->buffer_index >= controller->buffer_size)
BX_PANIC(("IO write(0x%04x): buffer_index >= %d", address, controller->buffer_size));
#if BX_SupportRepeatSpeedups
if (DEV_bulk_io_quantum_requested()) {
unsigned transferLen, quantumsMax;
quantumsMax = (controller->buffer_size - controller->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(&controller->buffer[controller->buffer_index],
(Bit8u*) DEV_bulk_io_host_addr(), transferLen);
DEV_bulk_io_host_addr() += transferLen;
controller->buffer_index += transferLen;
}
else
#endif
{
switch(io_len) {
case 4:
controller->buffer[controller->buffer_index+3] = (Bit8u)(value >> 24);
controller->buffer[controller->buffer_index+2] = (Bit8u)(value >> 16);
case 2:
controller->buffer[controller->buffer_index+1] = (Bit8u)(value >> 8);
controller->buffer[controller->buffer_index] = (Bit8u) value;
}
controller->buffer_index += io_len;
}
/* if buffer completely writtten */
if (controller->buffer_index >= controller->buffer_size) {
if (ide_write_sector(channel, controller->buffer,
controller->buffer_size)) {
if ((controller->current_command == 0xC5) ||
(controller->current_command == 0x39)) {
if (controller->num_sectors > controller->multiple_sectors) {
controller->buffer_size = controller->multiple_sectors * 512;
} else {
controller->buffer_size = controller->num_sectors * 512;
}
}
controller->buffer_index = 0;
/* 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 (controller->num_sectors != 0) {
controller->status.busy = 0;
controller->status.drive_ready = 1;
controller->status.drq = 1;
controller->status.corrected_data = 0;
controller->status.err = 0;
} else { /* no more sectors to write */
controller->status.busy = 0;
controller->status.drive_ready = 1;
controller->status.drq = 0;
controller->status.err = 0;
controller->status.corrected_data = 0;
}
raise_interrupt(channel);
}
}
break;
case 0xa0: // PACKET
if (controller->buffer_index >= PACKET_SIZE)
BX_PANIC(("IO write(0x%04x): buffer_index >= PACKET_SIZE", address));
switch (io_len) {
case 4:
controller->buffer[controller->buffer_index+3] = (Bit8u)(value >> 24);
controller->buffer[controller->buffer_index+2] = (Bit8u)(value >> 16);
case 2:
controller->buffer[controller->buffer_index+1] = (Bit8u)(value >> 8);
controller->buffer[controller->buffer_index] = (Bit8u) value;
}
controller->buffer_index += io_len;
/* if packet completely writtten */
if (controller->buffer_index >= PACKET_SIZE) {
// complete command received
Bit8u atapi_command = controller->buffer[0];
controller->buffer_size = 2048;
BX_DEBUG(("ata%d-%d: ATAPI command 0x%02x started", channel,
BX_SLAVE_SELECTED(channel), atapi_command));
switch (atapi_command) {
case 0x00: // test unit ready
if (BX_SELECTED_DRIVE(channel).cdrom.ready) {
atapi_cmd_nop(controller);
} else {
atapi_cmd_error(channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT, 0);
}
raise_interrupt(channel);
break;
case 0x03: // request sense
{
int alloc_length = controller->buffer[4];
init_send_atapi_command(channel, atapi_command, 18, alloc_length);
// sense data
controller->buffer[0] = 0x70 | (1 << 7);
controller->buffer[1] = 0;
controller->buffer[2] = BX_SELECTED_DRIVE(channel).sense.sense_key;
controller->buffer[3] = BX_SELECTED_DRIVE(channel).sense.information.arr[0];
controller->buffer[4] = BX_SELECTED_DRIVE(channel).sense.information.arr[1];
controller->buffer[5] = BX_SELECTED_DRIVE(channel).sense.information.arr[2];
controller->buffer[6] = BX_SELECTED_DRIVE(channel).sense.information.arr[3];
controller->buffer[7] = 17-7;
controller->buffer[8] = BX_SELECTED_DRIVE(channel).sense.specific_inf.arr[0];
controller->buffer[9] = BX_SELECTED_DRIVE(channel).sense.specific_inf.arr[1];
controller->buffer[10] = BX_SELECTED_DRIVE(channel).sense.specific_inf.arr[2];
controller->buffer[11] = BX_SELECTED_DRIVE(channel).sense.specific_inf.arr[3];
controller->buffer[12] = BX_SELECTED_DRIVE(channel).sense.asc;
controller->buffer[13] = BX_SELECTED_DRIVE(channel).sense.ascq;
controller->buffer[14] = BX_SELECTED_DRIVE(channel).sense.fruc;
controller->buffer[15] = BX_SELECTED_DRIVE(channel).sense.key_spec.arr[0];
controller->buffer[16] = BX_SELECTED_DRIVE(channel).sense.key_spec.arr[1];
controller->buffer[17] = BX_SELECTED_DRIVE(channel).sense.key_spec.arr[2];
if (BX_SELECTED_DRIVE(channel).sense.sense_key == SENSE_UNIT_ATTENTION) {
BX_SELECTED_DRIVE(channel).sense.sense_key = SENSE_NONE;
}
ready_to_send_atapi(channel);
}
break;
case 0x1b: // start stop unit
{
char ata_name[20];
//bx_bool Immed = (controller->buffer[1] >> 0) & 1;
bx_bool LoEj = (controller->buffer[4] >> 1) & 1;
bx_bool Start = (controller->buffer[4] >> 0) & 1;
if (!LoEj && !Start) { // stop the disc
BX_ERROR(("FIXME: Stop disc not implemented"));
atapi_cmd_nop(controller);
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(controller);
raise_interrupt(channel);
} else if (LoEj && !Start) { // Eject the disc
atapi_cmd_nop(controller);
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;
sprintf(ata_name, "ata.%d.%s", channel, BX_SLAVE_SELECTED(channel)?"slave":"master");
bx_list_c *base = (bx_list_c*) SIM->get_param(ata_name);
SIM->get_param_enum("status", base)->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(controller);
raise_interrupt(channel);
}
}
break;
case 0xbd: // mechanism status
{
Bit16u alloc_length = read_16bit(controller->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);
controller->buffer[0] = 0; // reserved for non changers
controller->buffer[1] = 0; // reserved for non changers
controller->buffer[2] = 0; // Current LBA (TODO!)
controller->buffer[3] = 0; // Current LBA (TODO!)
controller->buffer[4] = 0; // Current LBA (TODO!)
controller->buffer[5] = 1; // one slot
controller->buffer[6] = 0; // slot table length
controller->buffer[7] = 0; // slot table length
ready_to_send_atapi(channel);
}
break;
case 0x1a: // mode sense (6)
case 0x5a: // mode sense (10)
{
Bit16u alloc_length;
if (atapi_command == 0x5a) {
alloc_length = read_16bit(controller->buffer + 7);
} else {
alloc_length = controller->buffer[4];
}
Bit8u PC = controller->buffer[2] >> 6;
Bit8u PageCode = controller->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, &controller->buffer[8], 28);
controller->buffer[8] = 0x2a;
controller->buffer[9] = 0x12;
controller->buffer[10] = 0x00;
controller->buffer[11] = 0x00;
// Multisession, Mode 2 Form 2, Mode 2 Form 1
controller->buffer[12] = 0x70;
controller->buffer[13] = (3 << 5);
controller->buffer[14] = (unsigned char) (1 |
(BX_SELECTED_DRIVE(channel).cdrom.locked ? (1 << 1) : 0) |
(1 << 3) |
(1 << 5));
controller->buffer[15] = 0x00;
controller->buffer[16] = (706 >> 8) & 0xff;
controller->buffer[17] = 706 & 0xff;
controller->buffer[18] = 0;
controller->buffer[19] = 2;
controller->buffer[20] = (512 >> 8) & 0xff;
controller->buffer[21] = 512 & 0xff;
controller->buffer[22] = (706 >> 8) & 0xff;
controller->buffer[23] = 706 & 0xff;
controller->buffer[24] = 0;
controller->buffer[25] = 0;
controller->buffer[26] = 0;
controller->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, 1);
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, 1);
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, 1);
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, 1);
raise_interrupt(channel);
break;
}
break;
case 0x2: // default values
switch (PageCode) {
case 0x2a: // CD-ROM capabilities & mech. status, copied from current values
init_send_atapi_command(channel, atapi_command, 28, alloc_length);
init_mode_sense_single(channel, &controller->buffer[8], 28);
controller->buffer[8] = 0x2a;
controller->buffer[9] = 0x12;
controller->buffer[10] = 0x00;
controller->buffer[11] = 0x00;
// Multisession, Mode 2 Form 2, Mode 2 Form 1
controller->buffer[12] = 0x70;
controller->buffer[13] = (3 << 5);
controller->buffer[14] = (unsigned char) (1 |
(BX_SELECTED_DRIVE(channel).cdrom.locked ? (1 << 1) : 0) |
(1 << 3) |
(1 << 5));
controller->buffer[15] = 0x00;
controller->buffer[16] = (706 >> 8) & 0xff;
controller->buffer[17] = 706 & 0xff;
controller->buffer[18] = 0;
controller->buffer[19] = 2;
controller->buffer[20] = (512 >> 8) & 0xff;
controller->buffer[21] = 512 & 0xff;
controller->buffer[22] = (706 >> 8) & 0xff;
controller->buffer[23] = 706 & 0xff;
controller->buffer[24] = 0;
controller->buffer[25] = 0;
controller->buffer[26] = 0;
controller->buffer[27] = 0;
ready_to_send_atapi(channel);
break;
case 0x01: // error recovery
case 0x0d: // CD-ROM
case 0x0e: // CD-ROM audio control
case 0x3f: // all
BX_ERROR(("cdrom: MODE SENSE (dflt), code=%x not implemented", PageCode));
atapi_cmd_error(channel, SENSE_ILLEGAL_REQUEST,
ASC_INV_FIELD_IN_CMD_PACKET, 1);
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, 1);
raise_interrupt(channel);
break;
}
break;
case 0x3: // saved values not implemented
atapi_cmd_error(channel, SENSE_ILLEGAL_REQUEST, ASC_SAVING_PARAMETERS_NOT_SUPPORTED, 1);
raise_interrupt(channel);
break;
default:
BX_PANIC(("Should not get here!"));
break;
}
}
break;
case 0x12: // inquiry
{
Bit8u alloc_length = controller->buffer[4];
init_send_atapi_command(channel, atapi_command, 36, alloc_length);
controller->buffer[0] = 0x05; // CD-ROM
controller->buffer[1] = 0x80; // Removable
controller->buffer[2] = 0x00; // ISO, ECMA, ANSI version
controller->buffer[3] = 0x21; // ATAPI-2, as specified
controller->buffer[4] = 31; // additional length (total 36)
controller->buffer[5] = 0x00; // reserved
controller->buffer[6] = 0x00; // reserved
controller->buffer[7] = 0x00; // reserved
// Vendor ID
const char* vendor_id = "BOCHS ";
for (i = 0; i < 8; i++)
controller->buffer[8+i] = vendor_id[i];
// Product ID
const char* product_id = "Generic CD-ROM ";
for (i = 0; i < 16; i++)
controller->buffer[16+i] = product_id[i];
if (BX_HD_THIS cdrom_count > 1) {
controller->buffer[31] = BX_SELECTED_DRIVE(channel).device_num;
}
// Product Revision level
const char* rev_level = "1.0 ";
for (i = 0; i < 4; i++)
controller->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) {
Bit32u capacity = BX_SELECTED_DRIVE(channel).cdrom.capacity - 1;
controller->buffer[0] = (capacity >> 24) & 0xff;
controller->buffer[1] = (capacity >> 16) & 0xff;
controller->buffer[2] = (capacity >> 8) & 0xff;
controller->buffer[3] = (capacity >> 0) & 0xff;
controller->buffer[4] = (2048 >> 24) & 0xff;
controller->buffer[5] = (2048 >> 16) & 0xff;
controller->buffer[6] = (2048 >> 8) & 0xff;
controller->buffer[7] = (2048 >> 0) & 0xff;
ready_to_send_atapi(channel);
} else {
atapi_cmd_error(channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT, 1);
raise_interrupt(channel);
}
}
break;
case 0xbe: // read cd
{
if (BX_SELECTED_DRIVE(channel).cdrom.ready) {
Bit32u lba = read_32bit(controller->buffer + 2);
Bit32u transfer_length = controller->buffer[8] |
(controller->buffer[7] << 8) |
(controller->buffer[6] << 16);
Bit8u transfer_req = controller->buffer[9];
if (transfer_length == 0) {
atapi_cmd_nop(controller);
raise_interrupt(channel);
break;
}
switch (transfer_req & 0xf8) {
case 0x00:
atapi_cmd_nop(controller);
raise_interrupt(channel);
break;
case 0xf8:
controller->buffer_size = 2352;
case 0x10:
init_send_atapi_command(channel, atapi_command,
transfer_length * controller->buffer_size,
transfer_length * controller->buffer_size, 1);
BX_SELECTED_DRIVE(channel).cdrom.remaining_blocks = transfer_length;
BX_SELECTED_DRIVE(channel).cdrom.next_lba = lba;
ready_to_send_atapi(channel);
break;
default:
BX_ERROR(("Read CD: unknown format"));
atapi_cmd_error(channel, SENSE_ILLEGAL_REQUEST, ASC_INV_FIELD_IN_CMD_PACKET, 1);
raise_interrupt(channel);
}
} else {
atapi_cmd_error(channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT, 1);
raise_interrupt(channel);
}
}
break;
case 0x43: // read toc
if (BX_SELECTED_DRIVE(channel).cdrom.ready) {
#ifdef LOWLEVEL_CDROM
bx_bool msf = (controller->buffer[1] >> 1) & 1;
Bit8u starting_track = controller->buffer[6];
int toc_length;
#endif
Bit16u alloc_length = read_16bit(controller->buffer + 7);
Bit8u format = (controller->buffer[9] >> 6);
// Win32: I just read the TOC using Win32's IOCTRL functions (Ben)
#if defined(WIN32)
#ifdef LOWLEVEL_CDROM
switch (format) {
case 2:
case 3:
case 4:
if (msf != 1)
BX_ERROR(("READ_TOC_EX: msf not set for format %i", format));
case 0:
case 1:
case 5:
if (!(BX_SELECTED_DRIVE(channel).cdrom.cd->read_toc(controller->buffer,
&toc_length, msf, starting_track, format))) {
atapi_cmd_error(channel, SENSE_ILLEGAL_REQUEST, ASC_INV_FIELD_IN_CMD_PACKET, 1);
raise_interrupt(channel);
} else {
init_send_atapi_command(channel, atapi_command, toc_length, alloc_length);
ready_to_send_atapi(channel);
}
break;
default:
BX_ERROR(("(READ TOC) format %d not supported", format));
atapi_cmd_error(channel, SENSE_ILLEGAL_REQUEST, ASC_INV_FIELD_IN_CMD_PACKET, 1);
raise_interrupt(channel);
}
#else
BX_PANIC(("LOWLEVEL_CDROM not defined"));
#endif
#else // WIN32
switch (format) {
case 0:
case 1:
case 2:
#ifdef LOWLEVEL_CDROM
if (!(BX_SELECTED_DRIVE(channel).cdrom.cd->read_toc(controller->buffer,
&toc_length, msf, starting_track, format))) {
atapi_cmd_error(channel, SENSE_ILLEGAL_REQUEST, ASC_INV_FIELD_IN_CMD_PACKET, 1);
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;
default:
BX_ERROR(("(READ TOC) format %d not supported", format));
atapi_cmd_error(channel, SENSE_ILLEGAL_REQUEST, ASC_INV_FIELD_IN_CMD_PACKET, 1);
raise_interrupt(channel);
break;
}
#endif // WIN32
} else {
atapi_cmd_error(channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT, 1);
raise_interrupt(channel);
}
break;
case 0x28: // read (10)
case 0xa8: // read (12)
{
Bit32s transfer_length;
if (atapi_command == 0x28)
transfer_length = read_16bit(controller->buffer + 7);
else
transfer_length = read_32bit(controller->buffer + 6);
Bit32u lba = read_32bit(controller->buffer + 2);
if (!BX_SELECTED_DRIVE(channel).cdrom.ready) {
atapi_cmd_error(channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT, 1);
raise_interrupt(channel);
break;
}
if (lba > BX_SELECTED_DRIVE(channel).cdrom.capacity) {
atapi_cmd_error(channel, SENSE_ILLEGAL_REQUEST, ASC_LOGICAL_BLOCK_OOR, 1);
raise_interrupt(channel);
break;
}
// Ben: see comment below
if (lba + transfer_length > BX_SELECTED_DRIVE(channel).cdrom.capacity) {
transfer_length = (BX_SELECTED_DRIVE(channel).cdrom.capacity - lba);
}
if (transfer_length <= 0) {
atapi_cmd_nop(controller);
raise_interrupt(channel);
BX_INFO(("READ(%d) with transfer length <= 0, ok (%i)", atapi_command==0x28?10:12, transfer_length));
break;
}
/* Ben: I commented this out and added the three lines above. I am not sure this is the correct thing
to do, but it seems to work.
FIXME: I think that if the transfer_length is more than we can transfer, we should return
some sort of flag/error/bitrep stating so. I haven't read the atapi specs enough to know
what needs to be done though.
if (lba + transfer_length > BX_SELECTED_DRIVE(channel).cdrom.capacity) {
atapi_cmd_error(channel, SENSE_ILLEGAL_REQUEST, ASC_LOGICAL_BLOCK_OOR, 1);
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, 1);
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
{
Bit32u lba = read_32bit(controller->buffer + 2);
if (!BX_SELECTED_DRIVE(channel).cdrom.ready) {
atapi_cmd_error(channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT, 1);
raise_interrupt(channel);
break;
}
if (lba > BX_SELECTED_DRIVE(channel).cdrom.capacity) {
atapi_cmd_error(channel, SENSE_ILLEGAL_REQUEST, ASC_LOGICAL_BLOCK_OOR, 1);
raise_interrupt(channel);
break;
}
#ifdef LOWLEVEL_CDROM
BX_SELECTED_DRIVE(channel).cdrom.cd->seek(lba);
#else
BX_PANIC(("Seek with no LOWLEVEL_CDROM"));
#endif
atapi_cmd_nop(controller);
raise_interrupt(channel);
}
break;
case 0x1e: // prevent/allow medium removal
if (BX_SELECTED_DRIVE(channel).cdrom.ready) {
BX_SELECTED_DRIVE(channel).cdrom.locked = controller->buffer[4] & 1;
atapi_cmd_nop(controller);
} else {
atapi_cmd_error(channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT, 1);
}
raise_interrupt(channel);
break;
case 0x42: // read sub-channel
{
bx_bool msf = get_packet_field(controller,1, 1, 1);
bx_bool sub_q = get_packet_field(controller,2, 6, 1);
Bit8u data_format = get_packet_byte(controller, 3);
Bit8u track_number = get_packet_byte(controller, 6);
Bit16u alloc_length = get_packet_word(controller, 7);
int ret_len = 4; // header size
UNUSED(msf);
UNUSED(track_number);
if (!BX_SELECTED_DRIVE(channel).cdrom.ready) {
atapi_cmd_error(channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT, 1);
raise_interrupt(channel);
} else {
controller->buffer[0] = 0;
controller->buffer[1] = 0; // audio not supported
controller->buffer[2] = 0;
controller->buffer[3] = 0;
if (sub_q) { // !sub_q == header only
if ((data_format == 2) || (data_format == 3)) { // UPC or ISRC
ret_len = 24;
controller->buffer[4] = data_format;
if (data_format == 3) {
controller->buffer[5] = 0x14;
controller->buffer[6] = 1;
}
controller->buffer[8] = 0; // no UPC, no ISRC
} else {
BX_ERROR(("Read sub-channel with SubQ not implemented (format=%d)", data_format));
atapi_cmd_error(channel, SENSE_ILLEGAL_REQUEST, ASC_INV_FIELD_IN_CMD_PACKET, 1);
raise_interrupt(channel);
break;
}
}
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, 1);
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: // get configuration
case 0x4a: // get event status notification
BX_DEBUG(("ATAPI command 0x%x not implemented yet", atapi_command));
atapi_cmd_error(channel, SENSE_ILLEGAL_REQUEST, ASC_ILLEGAL_OPCODE, 0);
raise_interrupt(channel);
break;
default:
BX_ERROR(("Unknown ATAPI command 0x%x (%d)", atapi_command, atapi_command));
atapi_cmd_error(channel, SENSE_ILLEGAL_REQUEST, ASC_ILLEGAL_OPCODE, 1);
raise_interrupt(channel);
break;
}
}
break;
default:
BX_PANIC(("IO write(0x%04x): current command is %02xh", address,
(unsigned) controller->current_command));
}
break;
case 0x01: // hard disk write precompensation 0x1f1
WRITE_FEATURES(channel,value);
if (value == 0xff)
BX_DEBUG(("no precompensation {%s}", BX_SELECTED_TYPE_STRING(channel)));
else
BX_DEBUG(("precompensation value %02x {%s}", value, BX_SELECTED_TYPE_STRING(channel)));
break;
case 0x02: // hard disk sector count 0x1f2
WRITE_SECTOR_COUNT(channel,value);
BX_DEBUG(("sector count = %u {%s}", value, BX_SELECTED_TYPE_STRING(channel)));
break;
case 0x03: // hard disk sector number 0x1f3
WRITE_SECTOR_NUMBER(channel,value);
BX_DEBUG(("sector number = %u {%s}", value, BX_SELECTED_TYPE_STRING(channel)));
break;
case 0x04: // hard disk cylinder low 0x1f4
WRITE_CYLINDER_LOW(channel,value);
BX_DEBUG(("cylinder low = %02xh {%s}", value, BX_SELECTED_TYPE_STRING(channel)));
break;
case 0x05: // hard disk cylinder high 0x1f5
WRITE_CYLINDER_HIGH(channel,value);
BX_DEBUG(("cylinder high = %02xh {%s}", 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_DEBUG(("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 (!controller->lba_mode && ((value >> 6) & 1) == 1)
BX_DEBUG(("enabling LBA mode"));
WRITE_LBA_MODE(channel,(value >> 6) & 1);
if (!BX_SELECTED_IS_PRESENT(channel)) {
BX_DEBUG(("ata%d: device set to %d which does not exist", channel, drvsel));
}
}
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 (controller->status.busy) {
BX_ERROR(("ata%d: command 0x%02x sent, controller BSY bit set", channel, value));
break;
}
if ((value & 0xf0) == 0x10)
value = 0x10;
controller->status.err = 0;
switch (value) {
case 0x10: // CALIBRATE DRIVE
if (!BX_SELECTED_IS_HD(channel)) {
BX_INFO(("ata%d-%d: calibrate drive issued to non-disk",
channel, BX_SLAVE_SELECTED(channel)));
command_aborted(channel, value);
break;
}
if (!BX_SELECTED_IS_PRESENT(channel)) {
controller->error_register = 0x02; // Track 0 not found
controller->status.busy = 0;
controller->status.drive_ready = 1;
controller->status.seek_complete = 0;
controller->status.drq = 0;
controller->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 */
controller->error_register = 0;
controller->cylinder_no = 0;
controller->status.busy = 0;
controller->status.drive_ready = 1;
controller->status.seek_complete = 1;
controller->status.drq = 0;
raise_interrupt(channel);
break;
case 0x24: // READ SECTORS EXT
case 0x29: // READ MULTIPLE EXT
lba48 = 1;
case 0x20: // READ SECTORS, with retries
case 0x21: // READ SECTORS, without retries
case 0xC4: // READ MULTIPLE SECTORS
/* 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_INFO(("ata%d-%d: read sectors issued to non-disk",
channel, BX_SLAVE_SELECTED(channel)));
command_aborted(channel, value);
break;
}
// Lose98 accesses 0/0/0 in CHS mode
if (!controller->lba_mode &&
!controller->head_no &&
!controller->cylinder_no &&
!controller->sector_no) {
BX_INFO(("ata%d-%d: : read from 0/0/0, aborting command",
channel, BX_SLAVE_SELECTED(channel)));
command_aborted(channel, value);
break;
}
lba48_transform(controller, lba48);
if ((value == 0xC4) || (value == 0x29)) {
if (controller->multiple_sectors == 0) {
command_aborted(channel, value);
break;
}
if (controller->num_sectors > controller->multiple_sectors) {
controller->buffer_size = controller->multiple_sectors * 512;
} else {
controller->buffer_size = controller->num_sectors * 512;
}
} else {
controller->buffer_size = 512;
}
controller->current_command = value;
if (ide_read_sector(channel, controller->buffer,
controller->buffer_size)) {
controller->error_register = 0;
controller->status.busy = 0;
controller->status.drive_ready = 1;
controller->status.seek_complete = 1;
controller->status.drq = 1;
controller->status.corrected_data = 0;
controller->buffer_index = 0;
raise_interrupt(channel);
}
break;
case 0x34: // WRITE SECTORS EXT
case 0x39: // WRITE MULTIPLE EXT
lba48 = 1;
case 0x30: // WRITE SECTORS, with retries
case 0xC5: // WRITE MULTIPLE SECTORS
/* 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_INFO(("ata%d-%d: write sectors issued to non-disk",
channel, BX_SLAVE_SELECTED(channel)));
command_aborted(channel, value);
break;
}
lba48_transform(controller, lba48);
if ((value == 0xC5) || (value ==0x39)) {
if (controller->multiple_sectors == 0) {
command_aborted(channel, value);
break;
}
if (controller->num_sectors > controller->multiple_sectors) {
controller->buffer_size = controller->multiple_sectors * 512;
} else {
controller->buffer_size = controller->num_sectors * 512;
}
} else {
controller->buffer_size = 512;
}
controller->current_command = value;
// implicit seek done :^)
controller->error_register = 0;
controller->status.busy = 0;
// controller->status.drive_ready = 1;
controller->status.seek_complete = 1;
controller->status.drq = 1;
controller->buffer_index = 0;
break;
case 0x90: // EXECUTE DEVICE DIAGNOSTIC
set_signature(channel, BX_SLAVE_SELECTED(channel));
controller->error_register = 0x01;
controller->status.drq = 0;
raise_interrupt(channel);
break;
case 0x91: // INITIALIZE DRIVE PARAMETERS
if (!BX_SELECTED_IS_HD(channel)) {
BX_INFO(("ata%d-%d: initialize drive parameters issued to non-disk",
channel, BX_SLAVE_SELECTED(channel)));
command_aborted(channel, value);
break;
}
// sets logical geometry of specified drive
BX_DEBUG(("ata%d-%d: init drive params: sec=%u, drive sel=%u, head=%u",
channel, BX_SLAVE_SELECTED(channel),
(unsigned) controller->sector_count,
(unsigned) BX_HD_THIS channels[channel].drive_select,
(unsigned) controller->head_no));
if (!BX_SELECTED_IS_PRESENT(channel)) {
BX_PANIC(("init drive params: disk ata%d-%d not present", channel, BX_SLAVE_SELECTED(channel)));
//controller->error_register = 0x12;
controller->status.busy = 0;
controller->status.drive_ready = 1;
controller->status.drq = 0;
raise_interrupt(channel);
break;
}
if (controller->sector_count != BX_SELECTED_DRIVE(channel).hdimage->spt) {
BX_ERROR(("ata%d-%d: init drive params: logical sector count %d not supported", channel, BX_SLAVE_SELECTED(channel),
controller->sector_count));
command_aborted(channel, value);
break;
}
if (controller->head_no == 0) {
// Linux 2.6.x kernels use this value and don't like aborting here
BX_ERROR(("ata%d-%d: init drive params: max. logical head number 0 not supported", channel, BX_SLAVE_SELECTED(channel)));
} else if (controller->head_no != (BX_SELECTED_DRIVE(channel).hdimage->heads-1)) {
BX_ERROR(("ata%d-%d: init drive params: max. logical head number %d not supported", channel, BX_SLAVE_SELECTED(channel),
controller->head_no));
command_aborted(channel, value);
break;
}
controller->status.busy = 0;
controller->status.drive_ready = 1;
controller->status.drq = 0;
raise_interrupt(channel);
break;
case 0xec: // IDENTIFY DEVICE
{
BX_DEBUG(("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)) {
set_signature(channel, BX_SLAVE_SELECTED(channel));
command_aborted(channel, 0xec);
} else {
controller->current_command = value;
controller->error_register = 0;
// See ATA/ATAPI-4, 8.12
controller->status.busy = 0;
controller->status.drive_ready = 1;
controller->status.write_fault = 0;
controller->status.drq = 1;
controller->status.seek_complete = 1;
controller->status.corrected_data = 0;
controller->buffer_index = 0;
if (!BX_SELECTED_DRIVE(channel).identify_set) {
identify_drive(channel);
}
// now convert the id_drive array (native 256 word format) to
// the controller buffer (512 bytes)
for (i=0; i<=255; i++) {
Bit16u temp16 = BX_SELECTED_DRIVE(channel).id_drive[i];
controller->buffer[i*2] = temp16 & 0x00ff;
controller->buffer[i*2+1] = temp16 >> 8;
}
raise_interrupt(channel);
}
}
break;
case 0xef: // SET FEATURES
switch(controller->features) {
case 0x03: // Set Transfer Mode
{
Bit8u type = (controller->sector_count >> 3);
Bit8u mode = controller->sector_count & 0x07;
switch (type) {
case 0x00: // PIO default
case 0x01: // PIO mode
BX_INFO(("ata%d-%d: set transfer mode to PIO", channel,
BX_SLAVE_SELECTED(channel)));
controller->mdma_mode = 0x00;
controller->udma_mode = 0x00;
controller->status.drive_ready = 1;
controller->status.seek_complete = 1;
raise_interrupt(channel);
break;
case 0x04: // MDMA mode
BX_INFO(("ata%d-%d: set transfer mode to MDMA%d", channel,
BX_SLAVE_SELECTED(channel), mode));
controller->mdma_mode = (1 << mode);
controller->udma_mode = 0x00;
controller->status.drive_ready = 1;
controller->status.seek_complete = 1;
raise_interrupt(channel);
break;
case 0x08: // UDMA mode
controller->mdma_mode = 0x00;
controller->udma_mode = (1 << mode);
controller->status.drive_ready = 1;
controller->status.seek_complete = 1;
raise_interrupt(channel);
break;
default:
BX_ERROR(("ata%d-%d: unknown transfer mode type 0x%02x", channel,
BX_SLAVE_SELECTED(channel), type));
command_aborted(channel, value);
}
BX_SELECTED_DRIVE(channel).identify_set = 0;
}
break;
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(("ata%d-%d: SET FEATURES subcommand 0x%02x not supported, but returning success",
channel,BX_SLAVE_SELECTED(channel),(unsigned) controller->features));
controller->status.drive_ready = 1;
controller->status.seek_complete = 1;
raise_interrupt(channel);
break;
default:
BX_ERROR(("ata%d-%d: SET FEATURES with unknown subcommand: 0x%02x",
channel,BX_SLAVE_SELECTED(channel),(unsigned) controller->features));
command_aborted(channel, value);
}
break;
case 0x42: // READ VERIFY SECTORS EXT
lba48 = 1;
case 0x40: // READ VERIFY SECTORS
case 0x41: // READ VERIFY SECTORS NO RETRY
if (!BX_SELECTED_IS_HD(channel)) {
BX_INFO(("ata%d-%d: read verify issued to non-disk",
channel,BX_SLAVE_SELECTED(channel)));
command_aborted(channel, value);
break;
}
lba48_transform(controller, lba48);
BX_INFO(("ata%d-%d: verify command : 0x%02x !", channel,BX_SLAVE_SELECTED(channel), value));
controller->status.busy = 0;
controller->status.drive_ready = 1;
controller->status.drq = 0;
raise_interrupt(channel);
break;
case 0xc6: // SET MULTIPLE MODE
if (!BX_SELECTED_IS_HD(channel)) {
BX_INFO(("set multiple mode issued to non-disk"));
command_aborted(channel, value);
} else if ((controller->sector_count > MAX_MULTIPLE_SECTORS) ||
((controller->sector_count & (controller->sector_count - 1)) != 0) ||
(controller->sector_count == 0)) {
command_aborted(channel, value);
} else {
BX_DEBUG(("set multiple mode: sectors=%d", controller->sector_count));
controller->multiple_sectors = controller->sector_count;
controller->status.busy = 0;
controller->status.drive_ready = 1;
controller->status.write_fault = 0;
controller->status.drq = 0;
raise_interrupt(channel);
}
break;
// ATAPI commands
case 0xa1: // IDENTIFY PACKET DEVICE
{
if (BX_SELECTED_IS_CD(channel)) {
controller->current_command = value;
controller->error_register = 0;
controller->status.busy = 0;
controller->status.drive_ready = 1;
controller->status.write_fault = 0;
controller->status.drq = 1;
controller->status.seek_complete = 1;
controller->status.corrected_data = 0;
controller->buffer_index = 0;
if (!BX_SELECTED_DRIVE(channel).identify_set) {
identify_ATAPI_drive(channel);
}
// now convert the id_drive array (native 256 word format) to
// the controller buffer (512 bytes)
for (i = 0; i <= 255; i++) {
Bit16u temp16 = BX_SELECTED_DRIVE(channel).id_drive[i];
controller->buffer[i*2] = temp16 & 0x00ff;
controller->buffer[i*2+1] = temp16 >> 8;
}
raise_interrupt(channel);
} else {
command_aborted(channel, 0xa1);
}
}
break;
case 0x08: // DEVICE RESET (atapi)
if (BX_SELECTED_IS_CD(channel)) {
set_signature(channel, BX_SLAVE_SELECTED(channel));
controller->status.busy = 1;
controller->error_register &= ~(1 << 7);
controller->status.write_fault = 0;
controller->status.drq = 0;
controller->status.corrected_data = 0;
controller->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
controller->packet_dma = (controller->features & 1);
if (controller->features & (1 << 1)) {
BX_ERROR(("PACKET-overlapped not supported"));
command_aborted (channel, 0xa0);
} else {
// We're already ready!
controller->sector_count = 1;
controller->status.busy = 0;
controller->status.write_fault = 0;
// serv bit??
controller->status.drq = 1;
// NOTE: no interrupt here
controller->current_command = value;
controller->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"));
command_aborted(channel, 0xa2);
} else {
command_aborted(channel, 0xa2);
}
break;
// power management & flush cache stubs
case 0xE0: // STANDBY NOW
case 0xE1: // IDLE IMMEDIATE
case 0xE7: // FLUSH CACHE
case 0xEA: // FLUSH CACHE EXT
controller->status.busy = 0;
controller->status.drive_ready = 1;
controller->status.write_fault = 0;
controller->status.drq = 0;
raise_interrupt(channel);
break;
case 0xe5: // CHECK POWER MODE
controller->status.busy = 0;
controller->status.drive_ready = 1;
controller->status.write_fault = 0;
controller->status.drq = 0;
controller->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;
}
controller->error_register = 0;
controller->status.busy = 0;
controller->status.drive_ready = 1;
controller->status.seek_complete = 1;
controller->status.drq = 0;
controller->status.corrected_data = 0;
controller->buffer_index = 0;
BX_DEBUG(("ata%d-%d: SEEK completed (IRQ %sabled)", channel,
BX_SLAVE_SELECTED(channel), controller->control.disable_irq?"dis":"en"));
raise_interrupt(channel);
} else {
BX_INFO(("write cmd 0x70 (SEEK) not supported for non-disk"));
command_aborted(channel, 0x70);
}
break;
case 0x25: // READ DMA EXT
lba48 = 1;
case 0xC8: // READ DMA
if (BX_SELECTED_IS_HD(channel) && BX_HD_THIS bmdma_present()) {
lba48_transform(controller, lba48);
controller->status.drive_ready = 1;
controller->status.seek_complete = 1;
controller->status.drq = 1;
controller->current_command = value;
} else {
BX_ERROR(("write cmd 0x%02x (READ DMA) not supported", value));
command_aborted(channel, value);
}
break;
case 0x35: // WRITE DMA EXT
lba48 = 1;
case 0xCA: // WRITE DMA
if (BX_SELECTED_IS_HD(channel) && BX_HD_THIS bmdma_present()) {
lba48_transform(controller, lba48);
controller->status.drive_ready = 1;
controller->status.seek_complete = 1;
controller->status.drq = 1;
controller->current_command = value;
} else {
BX_ERROR(("write cmd 0x%02x (WRITE DMA) not supported", value));
command_aborted(channel, value);
}
break;
case 0x27: // READ NATIVE MAX ADDRESS EXT
lba48 = 1;
case 0xF8: // READ NATIVE MAX ADDRESS
if (BX_SELECTED_IS_HD(channel)) {
lba48_transform(controller, lba48);
Bit64s max_sector = BX_SELECTED_DRIVE(channel).hdimage->hd_size / 512 - 1;
if (controller->lba_mode) {
if (!controller->lba48) {
controller->head_no = (Bit8u)((max_sector >> 24) & 0xf);
controller->cylinder_no = (Bit16u)((max_sector >> 8) & 0xffff);
controller->sector_no = (Bit8u)((max_sector) & 0xff);
} else {
controller->hob.hcyl = (Bit8u)((max_sector >> 40) & 0xff);
controller->hob.lcyl = (Bit8u)((max_sector >> 32) & 0xff);
controller->hob.sector = (Bit8u)((max_sector >> 24) & 0xff);
controller->cylinder_no = (Bit16u)((max_sector >> 8) & 0xffff);
controller->sector_no = (Bit8u)((max_sector) & 0xff);
}
controller->status.drive_ready = 1;
controller->status.seek_complete = 1;
raise_interrupt(channel);
} else {
command_aborted(channel, value);
}
} else {
command_aborted(channel, value);
}
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 0x26: BX_ERROR(("write cmd 0x26 (READ DMA QUEUED EXT) not supported"));command_aborted(channel, 0x26); 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 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 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 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 0xC7: BX_ERROR(("write cmd 0xC7 (READ DMA QUEUED) not supported"));command_aborted(channel, 0xC7); break;
case 0xC9: BX_ERROR(("write cmd 0xC9 (READ DMA NO RETRY) not supported")); command_aborted(channel, 0xC9); 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 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 0xE8: BX_ERROR(("write cmd 0xE8 (WRITE BUFFER) not supported"));command_aborted(channel, 0xE8); 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 0xF9: BX_ERROR(("write cmd 0xF9 (SET MAX ADDRESS) not supported"));command_aborted(channel, 0xF9); break;
default:
BX_ERROR(("IO write to 0x%04x: unknown command 0x%02x", address, value));
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 = controller->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;
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(("ata%d: adapter control reg: reset controller = %d", channel,
(unsigned) (controller->control.reset) ? 1 : 0));
BX_DEBUG(("ata%d: adapter control reg: disable irq = %d", channel,
(unsigned) (controller->control.disable_irq) ? 1 : 0));
if (!prev_control_reset && controller->control.reset) {
// transition from 0 to 1 causes all drives to reset
BX_DEBUG(("Enter RESET mode"));
// (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).multiple_sectors = 0;
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 (controller->reset_in_progress &&
!controller->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;
set_signature(channel, id);
}
}
BX_DEBUG(("ata%d: adapter control reg: disable irq = %d", channel,
(unsigned) (controller->control.disable_irq) ? 1 : 0));
break;
default:
BX_PANIC(("hard drive: io write to address %x = %02x",
(unsigned) address, (unsigned) value));
}
}
bx_bool BX_CPP_AttrRegparmN(2)
bx_hard_drive_c::calculate_logical_address(Bit8u channel, Bit64s *sector)
{
Bit64s logical_sector;
controller_t *controller = &BX_SELECTED_CONTROLLER(channel);
if (controller->lba_mode) {
if (!controller->lba48) {
logical_sector = ((Bit32u)controller->head_no) << 24 |
((Bit32u)controller->cylinder_no) << 8 |
(Bit32u)controller->sector_no;
} else {
logical_sector = ((Bit64u)controller->hob.hcyl) << 40 |
((Bit64u)controller->hob.lcyl) << 32 |
((Bit64u)controller->hob.sector) << 24 |
((Bit64u)controller->cylinder_no) << 8 |
(Bit64u)controller->sector_no;
}
} else {
logical_sector = ((Bit32u)controller->cylinder_no * BX_SELECTED_DRIVE(channel).hdimage->heads *
BX_SELECTED_DRIVE(channel).hdimage->spt) +
(Bit32u)(controller->head_no * BX_SELECTED_DRIVE(channel).hdimage->spt) +
(controller->sector_no - 1);
}
Bit64s sector_count = BX_SELECTED_DRIVE(channel).hdimage->hd_size / 512;
if (logical_sector >= sector_count) {
BX_ERROR (("calc_log_addr: out of bounds ("FMT_LL"d/"FMT_LL"d)", logical_sector, sector_count));
return 0;
}
*sector = logical_sector;
return 1;
}
void BX_CPP_AttrRegparmN(2)
bx_hard_drive_c::increment_address(Bit8u channel, Bit64s *sector)
{
controller_t *controller = &BX_SELECTED_CONTROLLER(channel);
controller->sector_count--;
controller->num_sectors--;
if (controller->lba_mode) {
Bit64s logical_sector = *sector;
logical_sector++;
if (!controller->lba48) {
controller->head_no = (Bit8u)((logical_sector >> 24) & 0xf);
controller->cylinder_no = (Bit16u)((logical_sector >> 8) & 0xffff);
controller->sector_no = (Bit8u)((logical_sector) & 0xff);
} else {
controller->hob.hcyl = (Bit8u)((logical_sector >> 40) & 0xff);
controller->hob.lcyl = (Bit8u)((logical_sector >> 32) & 0xff);
controller->hob.sector = (Bit8u)((logical_sector >> 24) & 0xff);
controller->cylinder_no = (Bit16u)((logical_sector >> 8) & 0xffff);
controller->sector_no = (Bit8u)((logical_sector) & 0xff);
}
} else {
controller->sector_no++;
if (controller->sector_no > BX_SELECTED_DRIVE(channel).hdimage->spt) {
controller->sector_no = 1;
controller->head_no++;
if (controller->head_no >= BX_SELECTED_DRIVE(channel).hdimage->heads) {
controller->head_no = 0;
controller->cylinder_no++;
if (controller->cylinder_no >= BX_SELECTED_DRIVE(channel).hdimage->cylinders)
controller->cylinder_no = BX_SELECTED_DRIVE(channel).hdimage->cylinders - 1;
}
}
}
}
void bx_hard_drive_c::identify_ATAPI_drive(Bit8u channel)
{
unsigned i;
char serial_number[21];
memset(&BX_SELECTED_DRIVE(channel).id_drive, 0, 512);
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;
strcpy(serial_number, "BXCD00000 ");
serial_number[8] = BX_SELECTED_DRIVE(channel).device_num;
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
if (BX_HD_THIS bmdma_present()) {
BX_SELECTED_DRIVE(channel).id_drive[49] = (1<<9) | (1<<8); // LBA and DMA
} else {
BX_SELECTED_DRIVE(channel).id_drive[49] = (1<<9); // LBA only 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;
BX_SELECTED_DRIVE(channel).identify_set = 1;
}
void bx_hard_drive_c::identify_drive(Bit8u channel)
{
unsigned i;
char serial_number[21];
Bit32u temp32;
Bit64u num_sects;
memset(&BX_SELECTED_DRIVE(channel).id_drive, 0, 512);
// 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.
if (BX_SELECTED_DRIVE(channel).hdimage->cylinders > 16383) {
BX_SELECTED_DRIVE(channel).id_drive[1] = 16383;
} else {
BX_SELECTED_DRIVE(channel).id_drive[1] = BX_SELECTED_DRIVE(channel).hdimage->cylinders;
}
// Word 2: reserved
// Word 3: number of user-addressable heads in default
// translation mode
BX_SELECTED_DRIVE(channel).id_drive[3] = BX_SELECTED_DRIVE(channel).hdimage->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).hdimage->spt);
BX_SELECTED_DRIVE(channel).id_drive[5] = 512;
BX_SELECTED_DRIVE(channel).id_drive[6] = BX_SELECTED_DRIVE(channel).hdimage->spt;
// Word 7-9: Vendor specific
// Word 10-19: Serial number (20 ASCII characters, 0000h=not specified)
// This field is right justified and padded with spaces (20h).
strcpy(serial_number, "BXHD00000 ");
serial_number[7] = channel + 49;
serial_number[8] = BX_HD_THIS channels[channel].drive_select + 49;
for (i = 0; i < 10; i++) {
BX_SELECTED_DRIVE(channel).id_drive[10+i] = (serial_number[i*2] << 8) |
serial_number[i*2 + 1];
}
// 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=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
if (BX_HD_THIS bmdma_present()) {
BX_SELECTED_DRIVE(channel).id_drive[49] = (1<<9) | (1<<8);
} else {
BX_SELECTED_DRIVE(channel).id_drive[49] = 1<<9;
}
// Word 50: Reserved
// 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
// 2 1=the fields reported in word 88 are valid
// 1 1=the fields reported in words 64-70 are valid
// 0 1=the fields reported in words 54-58 are valid
BX_SELECTED_DRIVE(channel).id_drive[53] = 0x07;
// 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
if (BX_SELECTED_DRIVE(channel).hdimage->cylinders > 16383) {
BX_SELECTED_DRIVE(channel).id_drive[54] = 16383;
} else {
BX_SELECTED_DRIVE(channel).id_drive[54] = BX_SELECTED_DRIVE(channel).hdimage->cylinders;
}
BX_SELECTED_DRIVE(channel).id_drive[55] = BX_SELECTED_DRIVE(channel).hdimage->heads;
BX_SELECTED_DRIVE(channel).id_drive[56] = BX_SELECTED_DRIVE(channel).hdimage->spt;
// Word 57-58: Current capacity in sectors
// Excludes all sectors used for device specific purposes.
temp32 =
BX_SELECTED_DRIVE(channel).hdimage->cylinders *
BX_SELECTED_DRIVE(channel).hdimage->heads *
BX_SELECTED_DRIVE(channel).hdimage->spt;
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
if (BX_SELECTED_CONTROLLER(channel).multiple_sectors > 0)
BX_SELECTED_DRIVE(channel).id_drive[59] = 0x0100 | BX_SELECTED_CONTROLLER(channel).multiple_sectors;
else
BX_SELECTED_DRIVE(channel).id_drive[59] = 0x0000;
// 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.
if (BX_SELECTED_DRIVE(channel).hdimage->hd_size > 0)
num_sects = (BX_SELECTED_DRIVE(channel).hdimage->hd_size >> 9);
else
num_sects = BX_SELECTED_DRIVE(channel).hdimage->cylinders * BX_SELECTED_DRIVE(channel).hdimage->heads * BX_SELECTED_DRIVE(channel).hdimage->spt;
BX_SELECTED_DRIVE(channel).id_drive[60] = (Bit16u)(num_sects & 0xffff); // LSW
BX_SELECTED_DRIVE(channel).id_drive[61] = (Bit16u)(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.
if (BX_HD_THIS bmdma_present()) {
BX_SELECTED_DRIVE(channel).id_drive[63] = 0x07 | (BX_SELECTED_CONTROLLER(channel).mdma_mode << 8);
} else {
BX_SELECTED_DRIVE(channel).id_drive[63] = 0x0;
}
// Word 64 PIO modes supported
BX_SELECTED_DRIVE(channel).id_drive[64] = 0x00;
// Word 65-68 PIO/DMA cycle time (nanoseconds)
for (i=65; i<=68; i++)
BX_SELECTED_DRIVE(channel).id_drive[i] = 120;
// Word 69-79 Reserved
// Word 80: 15-5 reserved
// 6 supports ATA/ATAPI-6
// 5 supports ATA/ATAPI-5
// 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] = 0x7e;
// Word 81: Minor version number
BX_SELECTED_DRIVE(channel).id_drive[81] = 0x00;
// 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;
// Word 83: 15 shall be ZERO
// 14 shall be ONE
// 13 FLUSH CACHE EXT command supported
// 12 FLUSH CACHE command supported
// 11 Device configuration overlay supported
// 10 48-bit Address feature set supported
// 9 Automatic acoustic management supported
// 8 SET MAX security supported
// 7 reserved for 1407DT PARTIES
// 6 SetF sub-command Power-Up supported
// 5 Power-Up in standby feature set supported
// 4 Removable media notification supported
// 3 APM feature set supported
// 2 CFA feature set supported
// 1 READ/WRITE DMA QUEUED commands supported
// 0 Download MicroCode supported
BX_SELECTED_DRIVE(channel).id_drive[83] = (1 << 14) | (1 << 13) | (1 << 12) | (1 << 10);
BX_SELECTED_DRIVE(channel).id_drive[84] = 1 << 14;
BX_SELECTED_DRIVE(channel).id_drive[85] = 1 << 14;
// Word 86: 15 shall be ZERO
// 14 shall be ONE
// 13 FLUSH CACHE EXT command enabled
// 12 FLUSH CACHE command enabled
// 11 Device configuration overlay enabled
// 10 48-bit Address feature set enabled
// 9 Automatic acoustic management enabled
// 8 SET MAX security enabled
// 7 reserved for 1407DT PARTIES
// 6 SetF sub-command Power-Up enabled
// 5 Power-Up in standby feature set enabled
// 4 Removable media notification enabled
// 3 APM feature set enabled
// 2 CFA feature set enabled
// 1 READ/WRITE DMA QUEUED commands enabled
// 0 Download MicroCode enabled
BX_SELECTED_DRIVE(channel).id_drive[86] = (1 << 14) | (1 << 13) | (1 << 12) | (1 << 10);
BX_SELECTED_DRIVE(channel).id_drive[87] = 1 << 14;
if (BX_HD_THIS bmdma_present()) {
BX_SELECTED_DRIVE(channel).id_drive[88] = 0x3f | (BX_SELECTED_CONTROLLER(channel).udma_mode << 8);
} else {
BX_SELECTED_DRIVE(channel).id_drive[88] = 0x0;
}
BX_SELECTED_DRIVE(channel).id_drive[93] = 1 | (1 << 14) | 0x2000;
// Word 100-103: 48-bit total number of sectors
BX_SELECTED_DRIVE(channel).id_drive[100] = (Bit16u)(num_sects & 0xffff);
BX_SELECTED_DRIVE(channel).id_drive[101] = (Bit16u)(num_sects >> 16);
BX_SELECTED_DRIVE(channel).id_drive[102] = (Bit16u)(num_sects >> 32);
BX_SELECTED_DRIVE(channel).id_drive[103] = (Bit16u)(num_sects >> 48);
// Word 128-159 Vendor unique
// Word 160-255 Reserved
BX_SELECTED_DRIVE(channel).identify_set = 1;
}
void bx_hard_drive_c::init_send_atapi_command(Bit8u channel, Bit8u command, int req_length, int alloc_length, bx_bool lazy)
{
controller_t *controller = &BX_SELECTED_CONTROLLER(channel);
// byte_count is a union of cylinder_no;
// lazy is used to force a data read in the buffer at the next read.
if (controller->byte_count == 0xffff)
controller->byte_count = 0xfffe;
if ((controller->byte_count & 1) &&
!(alloc_length <= controller->byte_count))
{
BX_INFO(("Odd byte count (0x%04x) to ATAPI command 0x%02x, using 0x%04x",
controller->byte_count, command, controller->byte_count - 1));
controller->byte_count--;
}
if (!controller->packet_dma) {
if (controller->byte_count == 0)
BX_PANIC(("ATAPI command 0x%02x with zero byte count", command));
}
if (alloc_length < 0)
BX_PANIC(("Allocation length < 0"));
if (alloc_length == 0)
alloc_length = controller->byte_count;
controller->interrupt_reason.i_o = 1;
controller->interrupt_reason.c_d = 0;
controller->status.busy = 0;
controller->status.drq = 1;
controller->status.err = 0;
// no bytes transfered yet
if (lazy)
controller->buffer_index = controller->buffer_size;
else
controller->buffer_index = 0;
controller->drq_index = 0;
if (controller->byte_count > req_length)
controller->byte_count = req_length;
if (controller->byte_count > alloc_length)
controller->byte_count = alloc_length;
BX_SELECTED_DRIVE(channel).atapi.command = command;
BX_SELECTED_DRIVE(channel).atapi.drq_bytes = controller->byte_count;
BX_SELECTED_DRIVE(channel).atapi.total_bytes_remaining = (req_length < alloc_length) ? req_length : alloc_length;
}
void bx_hard_drive_c::atapi_cmd_error(Bit8u channel, sense_t sense_key, asc_t asc, bx_bool show)
{
if (show) {
BX_ERROR(("ata%d-%d: atapi_cmd_error: key=%02x asc=%02x", channel, BX_SLAVE_SELECTED(channel), sense_key, asc));
} else {
BX_DEBUG(("ata%d-%d: atapi_cmd_error: key=%02x asc=%02x", channel, BX_SLAVE_SELECTED(channel), sense_key, asc));
}
controller_t *controller = &BX_SELECTED_CONTROLLER(channel);
controller->error_register = sense_key << 4;
controller->interrupt_reason.i_o = 1;
controller->interrupt_reason.c_d = 1;
controller->interrupt_reason.rel = 0;
controller->status.busy = 0;
controller->status.drive_ready = 1;
controller->status.write_fault = 0;
controller->status.drq = 0;
controller->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(controller_t *controller)
{
controller->interrupt_reason.i_o = 1;
controller->interrupt_reason.c_d = 1;
controller->interrupt_reason.rel = 0;
controller->status.busy = 0;
controller->status.drive_ready = 1;
controller->status.drq = 0;
controller->status.err = 0;
}
void bx_hard_drive_c::init_mode_sense_single(Bit8u channel, const void* src, int size)
{
controller_t *controller = &BX_SELECTED_CONTROLLER(channel);
// Header
controller->buffer[0] = (size+6) >> 8;
controller->buffer[1] = (size+6) & 0xff;
if (BX_SELECTED_DRIVE(channel).cdrom.ready)
controller->buffer[2] = 0x12; // media present 120mm CD-ROM (CD-R) data/audio door closed
else
controller->buffer[2] = 0x70; // no media present
controller->buffer[3] = 0; // reserved
controller->buffer[4] = 0; // reserved
controller->buffer[5] = 0; // reserved
controller->buffer[6] = 0; // reserved
controller->buffer[7] = 0; // reserved
// Data
memcpy(controller->buffer + 8, src, size);
}
void BX_CPP_AttrRegparmN(1)
bx_hard_drive_c::ready_to_send_atapi(Bit8u channel)
{
if (!BX_SELECTED_CONTROLLER(channel).packet_dma) {
raise_interrupt(channel);
}
}
void BX_CPP_AttrRegparmN(1)
bx_hard_drive_c::raise_interrupt(Bit8u channel)
{
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)));
#if BX_SUPPORT_PCI
DEV_ide_bmdma_set_irq(channel);
#endif
DEV_pic_raise_irq(irq);
} else {
BX_DEBUG(("not raising interrupt {%s}", BX_SELECTED_TYPE_STRING(channel)));
}
}
void bx_hard_drive_c::command_aborted(Bit8u channel, unsigned value)
{
controller_t *controller = &BX_SELECTED_CONTROLLER(channel);
BX_DEBUG(("aborting on command 0x%02x {%s}", value, BX_SELECTED_TYPE_STRING(channel)));
controller->current_command = 0;
controller->status.busy = 0;
controller->status.drive_ready = 1;
controller->status.err = 1;
controller->error_register = 0x04; // command ABORTED
controller->status.drq = 0;
controller->status.corrected_data = 0;
controller->buffer_index = 0;
raise_interrupt(channel);
}
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;
}
bx_bool 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;
}
bx_bool bx_hard_drive_c::set_cd_media_status(Bit32u handle, bx_bool status)
{
char ata_name[20];
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;
sprintf(ata_name, "ata.%d.%s", channel, (device==0)?"master":"slave");
bx_list_c *base = (bx_list_c*) SIM->get_param(ata_name);
// 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 selected drive is not a cdrom
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;
SIM->get_param_enum("status", base)->set(BX_EJECTED);
}
} else {
// insert cdrom
#ifdef LOWLEVEL_CDROM
if (BX_HD_THIS channels[channel].drives[device].cdrom.cd->insert_cdrom(SIM->get_param_string("path", base)->getptr())) {
BX_INFO(("Media present in CD-ROM drive"));
BX_HD_THIS channels[channel].drives[device].cdrom.ready = 1;
Bit32u capacity = BX_HD_THIS channels[channel].drives[device].cdrom.cd->capacity();
BX_HD_THIS channels[channel].drives[device].cdrom.capacity = capacity;
BX_INFO(("Capacity is %d sectors (%.2f MB)", capacity, (float)capacity / 512.0));
SIM->get_param_enum("status", base)->set(BX_INSERTED);
BX_SELECTED_DRIVE(channel).sense.sense_key = SENSE_UNIT_ATTENTION;
BX_SELECTED_DRIVE(channel).sense.asc = ASC_MEDIUM_MAY_HAVE_CHANGED;
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;
SIM->get_param_enum("status", base)->set(BX_EJECTED);
}
}
return (BX_HD_THIS channels[channel].drives[device].cdrom.ready);
}
bx_bool bx_hard_drive_c::bmdma_present(void)
{
#if BX_SUPPORT_PCI
if (BX_HD_THIS pci_enabled) {
return DEV_ide_bmdma_present();
}
#endif
return 0;
}
#if BX_SUPPORT_PCI
bx_bool bx_hard_drive_c::bmdma_read_sector(Bit8u channel, Bit8u *buffer, Bit32u *sector_size)
{
controller_t *controller = &BX_SELECTED_CONTROLLER(channel);
if ((controller->current_command == 0xC8) ||
(controller->current_command == 0x25)) {
*sector_size = 512;
if (!ide_read_sector(channel, buffer, 512)) {
return 0;
}
} else if (controller->current_command == 0xA0) {
if (controller->packet_dma) {
switch (BX_SELECTED_DRIVE(channel).atapi.command) {
case 0x28: // read (10)
case 0xa8: // read (12)
case 0xbe: // read cd
*sector_size = controller->buffer_size;
if (!BX_SELECTED_DRIVE(channel).cdrom.ready) {
BX_PANIC(("Read with CDROM not ready"));
return 0;
}
/* set status bar conditions for device */
bx_gui->statusbar_setitem(BX_SELECTED_DRIVE(channel).statusbar_id, 1);
#ifdef LOWLEVEL_CDROM
if (!BX_SELECTED_DRIVE(channel).cdrom.cd->read_block(buffer, BX_SELECTED_DRIVE(channel).cdrom.next_lba,
controller->buffer_size))
{
BX_PANIC(("CDROM: read block %d failed", BX_SELECTED_DRIVE(channel).cdrom.next_lba));
return 0;
}
BX_SELECTED_DRIVE(channel).cdrom.next_lba++;
BX_SELECTED_DRIVE(channel).cdrom.remaining_blocks--;
#else
BX_PANIC(("BM-DMA read with no LOWLEVEL_CDROM"));
#endif
break;
default:
memcpy(buffer, controller->buffer, *sector_size);
break;
}
} else {
BX_ERROR(("PACKET-DMA not active"));
command_aborted(channel, controller->current_command);
return 0;
}
} else {
BX_ERROR(("DMA read not active"));
command_aborted (channel, controller->current_command);
return 0;
}
return 1;
}
bx_bool bx_hard_drive_c::bmdma_write_sector(Bit8u channel, Bit8u *buffer)
{
controller_t *controller = &BX_SELECTED_CONTROLLER(channel);
if ((controller->current_command != 0xCA) &&
(controller->current_command != 0x35)) {
BX_ERROR(("DMA write not active"));
command_aborted (channel, controller->current_command);
return 0;
}
if (!ide_write_sector(channel, buffer, 512)) {
return 0;
}
return 1;
}
void bx_hard_drive_c::bmdma_complete(Bit8u channel)
{
controller_t *controller = &BX_SELECTED_CONTROLLER(channel);
controller->status.busy = 0;
controller->status.drive_ready = 1;
controller->status.drq = 0;
controller->status.err = 0;
if (BX_SELECTED_IS_CD(channel)) {
controller->interrupt_reason.i_o = 1;
controller->interrupt_reason.c_d = 1;
controller->interrupt_reason.rel = 0;
} else {
controller->status.write_fault = 0;
controller->status.seek_complete = 1;
controller->status.corrected_data = 0;
}
raise_interrupt(channel);
}
#endif
void bx_hard_drive_c::set_signature(Bit8u channel, Bit8u id)
{
// Device signature
BX_CONTROLLER(channel,id).head_no = 0;
BX_CONTROLLER(channel,id).sector_count = 1;
BX_CONTROLLER(channel,id).sector_no = 1;
if (BX_DRIVE_IS_HD(channel,id)) {
BX_CONTROLLER(channel,id).cylinder_no = 0;
BX_HD_THIS channels[channel].drive_select = 0;
} else if (BX_DRIVE_IS_CD(channel,id)) {
BX_CONTROLLER(channel,id).cylinder_no = 0xeb14;
} else {
BX_CONTROLLER(channel,id).cylinder_no = 0xffff;
}
}
bx_bool bx_hard_drive_c::ide_read_sector(Bit8u channel, Bit8u *buffer, Bit32u buffer_size)
{
controller_t *controller = &BX_SELECTED_CONTROLLER(channel);
Bit64s logical_sector = 0;
Bit64s ret;
int sector_count = (buffer_size / 512);
Bit8u *bufptr = buffer;
do {
if (!calculate_logical_address(channel, &logical_sector)) {
BX_ERROR(("ide_read_sector() reached invalid sector %lu, aborting", (unsigned long)logical_sector));
command_aborted(channel, controller->current_command);
return 0;
}
ret = BX_SELECTED_DRIVE(channel).hdimage->lseek(logical_sector * 512, SEEK_SET);
if (ret < 0) {
BX_ERROR(("could not lseek() hard drive image file"));
command_aborted(channel, controller->current_command);
return 0;
}
/* set status bar conditions for device */
bx_gui->statusbar_setitem(BX_SELECTED_DRIVE(channel).statusbar_id, 1);
ret = BX_SELECTED_DRIVE(channel).hdimage->read((bx_ptr_t)bufptr, 512);
if (ret < 512) {
BX_ERROR(("could not read() hard drive image file at byte %lu", (unsigned long)logical_sector*512));
command_aborted(channel, controller->current_command);
return 0;
}
increment_address(channel, &logical_sector);
bufptr += 512;
} while (--sector_count > 0);
return 1;
}
bx_bool bx_hard_drive_c::ide_write_sector(Bit8u channel, Bit8u *buffer, Bit32u buffer_size)
{
controller_t *controller = &BX_SELECTED_CONTROLLER(channel);
Bit64s logical_sector = 0;
Bit64s ret;
int sector_count = (buffer_size / 512);
Bit8u *bufptr = buffer;
do {
if (!calculate_logical_address(channel, &logical_sector)) {
BX_ERROR(("ide_write_sector() reached invalid sector %lu, aborting", (unsigned long)logical_sector));
command_aborted(channel, controller->current_command);
return 0;
}
ret = BX_SELECTED_DRIVE(channel).hdimage->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, controller->current_command);
return 0;
}
/* set status bar conditions for device */
bx_gui->statusbar_setitem(BX_SELECTED_DRIVE(channel).statusbar_id, 1, 1 /* write */);
ret = BX_SELECTED_DRIVE(channel).hdimage->write((bx_ptr_t)bufptr, 512);
if (ret < 512) {
BX_ERROR(("could not write() hard drive image file at byte %lu", (unsigned long)logical_sector*512));
command_aborted(channel, controller->current_command);
return 0;
}
increment_address(channel, &logical_sector);
bufptr += 512;
} while (--sector_count > 0);
return 1;
}
void bx_hard_drive_c::lba48_transform(controller_t *controller, bx_bool lba48)
{
controller->lba48 = lba48;
if (!controller->lba48) {
if (!controller->sector_count)
controller->num_sectors = 256;
else
controller->num_sectors = controller->sector_count;
} else {
if (!controller->sector_count && !controller->hob.nsector)
controller->num_sectors = 65536;
else
controller->num_sectors = (controller->hob.nsector << 8) |
controller->sector_count;
}
}
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;
}
// cdrom runtime parameter handling
// helper function
int get_device_handle_from_param(bx_param_c *param)
{
char pname[BX_PATHNAME_LEN];
bx_list_c *base = (bx_list_c*) param->get_parent();
base->get_param_path(pname, BX_PATHNAME_LEN);
if (!strncmp(pname, "ata.", 4)) {
int handle = (pname[4] - '0') << 1;
if (!strcmp(base->get_name(), "slave")) {
handle |= 1;
}
return handle;
} else {
return -1;
}
}
Bit64s bx_hard_drive_c::cdrom_status_handler(bx_param_c *param, int set, Bit64s val)
{
if (set) {
int handle = get_device_handle_from_param(param);
if (handle >= 0) {
if (!strcmp(param->get_name(), "status")) {
BX_HD_THIS channels[handle/2].drives[handle%2].status_changed = 1;
}
} else {
BX_PANIC(("cdrom_status_handler called with unexpected parameter '%s'", param->get_name()));
}
}
return val;
}
const char *bx_hard_drive_c::cdrom_path_handler(bx_param_string_c *param, int set,
const char *oldval, const char *val, int maxlen)
{
if (set) {
if (strlen(val) < 1) {
val = "none";
}
int handle = get_device_handle_from_param(param);
if (handle >= 0) {
if (!strcmp(param->get_name(), "path")) {
BX_HD_THIS channels[handle/2].drives[handle%2].status_changed = 1;
}
} else {
BX_PANIC(("cdrom_path_handler called with unexpected parameter '%s'", param->get_name()));
}
}
return val;
}
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