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- add note about where to find the spec

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- fill in names from spec on various commands
- add command aborted for 0x08 device reset on disks (it's only for ATAPI)
- add command aborted for 0xe1 idle immediate
This commit is contained in:
Bryce Denney 2001-09-28 07:14:50 +00:00
parent ffb489d4fa
commit 951014d794
1 changed files with 36 additions and 25 deletions
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61
bochs/iodev/harddrv.cc
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@ -20,6 +20,11 @@
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
// Useful docs:
// AT Attachment with Packet Interface
// working draft by T13 at www.t13.org
#include "bochs.h"
#define LOG_THIS bx_hard_drive.
@ -95,7 +100,7 @@ bx_hard_drive_c::~bx_hard_drive_c(void)
bx_hard_drive_c::init(bx_devices_c *d, bx_cmos_c *cmos)
{
BX_HD_THIS devices = d;
BX_DEBUG(("Init $Id: harddrv.cc,v 1.32 2001-09-19 15:30:44 bdenney Exp $"));
BX_DEBUG(("Init $Id: harddrv.cc,v 1.33 2001-09-28 07:14:50 bdenney Exp $"));
/* HARD DRIVE 0 */
@ -338,8 +343,8 @@ bx_hard_drive_c::read(Bit32u address, unsigned io_len)
BX_DEBUG(("IO read(1f0h): current command is %02xh",
(unsigned) BX_SELECTED_CONTROLLER.current_command));
switch (BX_SELECTED_CONTROLLER.current_command) {
case 0x20: // read sectors, with retries
case 0x21: // read sectors, without retries
case 0x20: // READ SECTORS, with retries
case 0x21: // READ SECTORS, without retries
if (io_len != 2) {
BX_PANIC(("non-word IO read from %04x",
(unsigned) address));
@ -399,7 +404,7 @@ bx_hard_drive_c::read(Bit32u address, unsigned io_len)
goto return_value16;
break;
case 0xec: // Drive ID Command
case 0xec: // IDENTIFY DEVICE
case 0xa1:
if (bx_options.OnewHardDriveSupport->get ()) {
unsigned index;
@ -715,7 +720,7 @@ BX_DEBUG(("IO write to %04x = %02x", (unsigned) address, (unsigned) value));
BX_PANIC(("non-word IO read from %04x", (unsigned) address));
}
switch (BX_SELECTED_CONTROLLER.current_command) {
case 0x30:
case 0x30: // WRITE SECTORS
if (BX_SELECTED_CONTROLLER.buffer_index >= 512)
BX_PANIC(("IO write(1f0): buffer_index >= 512"));
BX_SELECTED_CONTROLLER.buffer[BX_SELECTED_CONTROLLER.buffer_index] = value;
@ -1304,7 +1309,7 @@ BX_DEBUG(("IO write to %04x = %02x", (unsigned) address, (unsigned) value));
value = 0x10;
switch (value) {
case 0x10: // calibrate drive
case 0x10: // CALIBRATE DRIVE
if (BX_SELECTED_HD.device_type != IDE_DISK)
BX_PANIC(("calibrate drive issued to non-disk"));
if (BX_HD_THIS drive_select != 0 && !bx_options.diskd.Opresent->get ()) {
@ -1330,8 +1335,8 @@ BX_DEBUG(("IO write to %04x = %02x", (unsigned) address, (unsigned) value));
raise_interrupt();
break;
case 0x20: // read multiple sectors, with retries
case 0x21: // read multiple sectors, without retries
case 0x20: // READ MULTIPLE SECTORS, with retries
case 0x21: // READ MULTIPLE SECTORS, without retries
/* update sector_no, always points to current sector
* after each sector is read to buffer, DRQ bit set and issue IRQ 14
* if interrupt handler transfers all data words into main memory,
@ -1380,7 +1385,7 @@ BX_DEBUG(("IO write to %04x = %02x", (unsigned) address, (unsigned) value));
raise_interrupt();
break;
case 0x30: /* write multiple sectors, with retries */
case 0x30: /* WRITE SECTORS, with retries */
/* update sector_no, always points to current sector
* after each sector is read to buffer, DRQ bit set and issue IRQ 14
* if interrupt handler transfers all data words into main memory,
@ -1407,7 +1412,7 @@ BX_DEBUG(("IO write to %04x = %02x", (unsigned) address, (unsigned) value));
BX_SELECTED_CONTROLLER.buffer_index = 0;
break;
case 0x90: // Drive Diagnostic
case 0x90: // EXECUTE DEVICE DIAGNOSTIC
if (BX_SELECTED_CONTROLLER.status.busy) {
BX_PANIC(("diagnostic command: BSY bit set"));
}
@ -1419,7 +1424,7 @@ BX_DEBUG(("IO write to %04x = %02x", (unsigned) address, (unsigned) value));
BX_SELECTED_CONTROLLER.status.err = 0;
break;
case 0x91: // initialize drive parameters
case 0x91: // INITIALIZE DRIVE PARAMETERS
if (BX_SELECTED_CONTROLLER.status.busy) {
BX_PANIC(("init drive parameters command: BSY bit set"));
}
@ -1451,7 +1456,7 @@ BX_DEBUG(("IO write to %04x = %02x", (unsigned) address, (unsigned) value));
raise_interrupt();
break;
case 0xec: // Get Drive Info
case 0xec: // IDENTIFY DEVICE
if (bx_options.OnewHardDriveSupport->get ()) {
if (bx_dbg.disk || (CDROM_SELECTED && bx_dbg.cdrom))
BX_INFO(("Drive ID Command issued : 0xec "));
@ -1492,7 +1497,7 @@ BX_DEBUG(("IO write to %04x = %02x", (unsigned) address, (unsigned) value));
}
break;
case 0xef: // set features
case 0xef: // SET FEATURES
switch(BX_SELECTED_CONTROLLER.features) {
case 0x02: // Enable and
case 0x82: // Disable write cache.
@ -1507,7 +1512,7 @@ BX_DEBUG(("IO write to %04x = %02x", (unsigned) address, (unsigned) value));
}
break;
case 0x40: //
case 0x40: // READ VERIFY SECTORS
if (bx_options.OnewHardDriveSupport->get ()) {
if (BX_SELECTED_HD.device_type != IDE_DISK)
BX_PANIC(("read verify issued to non-disk"));
@ -1523,7 +1528,7 @@ BX_DEBUG(("IO write to %04x = %02x", (unsigned) address, (unsigned) value));
command_aborted(value);
}
break;
case 0xc6: // (mch) set multiple mode
case 0xc6: // SET MULTIPLE MODE (mch)
if (BX_SELECTED_CONTROLLER.sector_count != 128 &&
BX_SELECTED_CONTROLLER.sector_count != 64 &&
BX_SELECTED_CONTROLLER.sector_count != 32 &&
@ -1545,7 +1550,7 @@ BX_DEBUG(("IO write to %04x = %02x", (unsigned) address, (unsigned) value));
break;
// ATAPI commands
case 0xa1: // identify ATAPI device
case 0xa1: // IDENTIFY PACKET DEVICE
if (BX_SELECTED_HD.device_type == IDE_CDROM) {
BX_SELECTED_CONTROLLER.current_command = value;
BX_SELECTED_CONTROLLER.error_register = 0;
@ -1567,7 +1572,7 @@ BX_DEBUG(("IO write to %04x = %02x", (unsigned) address, (unsigned) value));
}
break;
case 0x08: // ATAPI soft reset command
case 0x08: // DEVICE RESET (atapi)
if (BX_SELECTED_HD.device_type == IDE_CDROM) {
BX_SELECTED_CONTROLLER.status.busy = 1;
BX_SELECTED_CONTROLLER.error_register &= ~(1 << 7);
@ -1585,9 +1590,11 @@ BX_DEBUG(("IO write to %04x = %02x", (unsigned) address, (unsigned) value));
BX_SELECTED_CONTROLLER.status.busy = 0;
break;
} else {
command_aborted(0x08);
}
case 0xa0: // send a packet command
break;
case 0xa0: // SEND PACKET (atapi)
if (BX_SELECTED_HD.device_type == IDE_CDROM) {
// PACKET
if (BX_SELECTED_CONTROLLER.features & (1 << 0))
@ -1609,7 +1616,7 @@ BX_DEBUG(("IO write to %04x = %02x", (unsigned) address, (unsigned) value));
break;
}
case 0xa2: // ATAPI service (optional)
case 0xa2: // SERVICE (atapi), optional
if (BX_SELECTED_HD.device_type == IDE_CDROM) {
BX_PANIC(("ATAPI SERVICE not implemented"));
}
@ -1619,8 +1626,13 @@ BX_DEBUG(("IO write to %04x = %02x", (unsigned) address, (unsigned) value));
command_aborted(value);
break;
case 0xe1: // IDLE IMMEDIATE
BX_INFO (("IO write(1f7h): idle immediate ignored"));
command_aborted(value);
break;
// power management
case 0xe5: // Check power mode
case 0xe5: // CHECK POWER MODE
BX_SELECTED_CONTROLLER.status.busy = 0;
BX_SELECTED_CONTROLLER.status.drive_ready = 1;
BX_SELECTED_CONTROLLER.status.write_fault = 0;
@ -1630,13 +1642,12 @@ BX_DEBUG(("IO write to %04x = %02x", (unsigned) address, (unsigned) value));
raise_interrupt();
break;
// flush cache. We don't have a cache!
// This is showing up in win2000 and freebsd.
case 0xe7:
case 0xe7: // FLUSH CACHE
// We don't have a cache! This is showing up in win2000 and freebsd.
BX_INFO(("IO write(1f7h): flush cache ignored"));
command_aborted(value);
break;
default:
BX_PANIC(("IO write(1f7h): command 0x%02x", (unsigned) value));
// if user foolishly decides to continue, abort the command