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86Box/src/scsi/scsi_disk.c
Cacodemon345 e703ac760b Write indicators (except for floppy drives)
2025-04-22 17:37:00 +06:00

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/*
* 86Box A hypervisor and IBM PC system emulator that specializes in
* running old operating systems and software designed for IBM
* PC systems and compatibles from 1981 through fairly recent
* system designs based on the PCI bus.
*
* Emulation of SCSI fixed disks.
*
*
*
* Authors: Miran Grca, <mgrca8@gmail.com>
*
* Copyright 2017-2018 Miran Grca.
*/
#include <inttypes.h>
#include <math.h>
#ifdef ENABLE_SCSI_DISK_LOG
#include <stdarg.h>
#endif
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <86box/86box.h>
#include <86box/timer.h>
#include <86box/device.h>
#include <86box/log.h>
#include <86box/scsi.h>
#include <86box/scsi_device.h>
#include <86box/machine.h>
#include <86box/nvr.h>
#include <86box/hdc_ide.h>
#include <86box/plat.h>
#include <86box/ui.h>
#include <86box/hdd.h>
#include <86box/scsi_disk.h>
#include <86box/version.h>
#define IDE_ATAPI_IS_EARLY id->sc->pad0
#define scsi_disk_sense_error dev->sense[0]
#define scsi_disk_sense_key dev->sense[2]
#define scsi_disk_info *(uint32_t *) &(dev->sense[3])
#define scsi_disk_asc dev->sense[12]
#define scsi_disk_ascq dev->sense[13]
// clang-format off
/*
Table of all SCSI commands and their flags, needed for the new disc change /
not ready handler.
*/
const uint8_t scsi_disk_command_flags[0x100] = {
[0x00] = IMPLEMENTED | CHECK_READY,
[0x01] = IMPLEMENTED | ALLOW_UA | SCSI_ONLY,
[0x03] = IMPLEMENTED | ALLOW_UA,
[0x04] = IMPLEMENTED | CHECK_READY | ALLOW_UA | SCSI_ONLY,
[0x08] = IMPLEMENTED | CHECK_READY,
[0x0a ... 0x0b] = IMPLEMENTED | CHECK_READY,
[0x12] = IMPLEMENTED | ALLOW_UA,
[0x13] = IMPLEMENTED | CHECK_READY | SCSI_ONLY,
[0x15] = IMPLEMENTED,
[0x16 ... 0x17] = IMPLEMENTED | SCSI_ONLY,
[0x1a] = IMPLEMENTED,
[0x1d] = IMPLEMENTED,
[0x1e] = IMPLEMENTED | CHECK_READY,
[0x25] = IMPLEMENTED | CHECK_READY,
[0x28] = IMPLEMENTED | CHECK_READY,
[0x2a ... 0x2b] = IMPLEMENTED | CHECK_READY,
[0x2e] = IMPLEMENTED | CHECK_READY,
[0x2f] = IMPLEMENTED | CHECK_READY | SCSI_ONLY,
[0x41] = IMPLEMENTED | CHECK_READY,
[0x55] = IMPLEMENTED,
[0x5a] = IMPLEMENTED,
[0xa8] = IMPLEMENTED | CHECK_READY,
[0xaa] = IMPLEMENTED | CHECK_READY,
[0xae] = IMPLEMENTED | CHECK_READY,
[0xaf] = IMPLEMENTED | CHECK_READY | SCSI_ONLY,
[0xbd] = IMPLEMENTED
};
uint64_t scsi_disk_mode_sense_page_flags = (GPMODEP_FORMAT_DEVICE_PAGE | GPMODEP_RIGID_DISK_PAGE |
GPMODEP_UNK_VENDOR_PAGE | GPMODEP_ALL_PAGES);
static const mode_sense_pages_t scsi_disk_mode_sense_pages_default = {
{ [0x03] = { GPMODE_FORMAT_DEVICE_PAGE, 0x16, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01,
0x00, 0x01, 0x01, 0x00, 0x02, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
[0x04] = { GPMODE_RIGID_DISK_PAGE, 0x16, 0x00, 0x10, 0x00, 0x40, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0xc8, 0xff, 0xff,
0xff, 0x00, 0x00, 0x00, 0x15, 0x18, 0x00, 0x00 },
[0x30] = { GPMODE_UNK_VENDOR_PAGE | 0x80, 0x16, '8' , '6' , 'B' , 'o' , 'x' , ' ' ,
' ' , ' ' , ' ' , ' ' , ' ' , ' ' , ' ' , ' ' ,
' ' , ' ' , ' ' , ' ' , ' ' , ' ' , ' ' , ' ' } }
};
static const mode_sense_pages_t scsi_disk_mode_sense_pages_changeable = {
{ [0x03] = { GPMODE_FORMAT_DEVICE_PAGE, 0x16, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
[0x04] = { GPMODE_RIGID_DISK_PAGE, 0x16, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
[0x30] = { GPMODE_UNK_VENDOR_PAGE | 0x80, 0x16, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } }
};
// clang-format on
static void scsi_disk_command_complete(scsi_disk_t *dev);
static void scsi_disk_mode_sense_load(scsi_disk_t *dev);
static void scsi_disk_init(scsi_disk_t *dev);
#ifdef ENABLE_SCSI_DISK_LOG
int scsi_disk_do_log = ENABLE_SCSI_DISK_LOG;
static void
scsi_disk_log(void *priv, const char *fmt, ...)
{
va_list ap;
if (scsi_disk_do_log) {
va_start(ap, fmt);
log_out(priv, fmt, ap);
va_end(ap);
}
}
#else
# define scsi_disk_log(priv, fmt, ...)
#endif
static void
scsi_disk_set_callback(const scsi_disk_t *dev)
{
if (dev->drv->bus_type != HDD_BUS_SCSI)
ide_set_callback(ide_drives[dev->drv->ide_channel], dev->callback);
}
static void
scsi_disk_init(scsi_disk_t *dev)
{
if (dev != NULL) {
/* Do a reset (which will also rezero it). */
scsi_disk_reset((scsi_common_t *) dev);
/* Configure the drive. */
dev->requested_blocks = 1;
dev->drv->bus_mode = 0;
if (dev->drv->bus_type >= HDD_BUS_ATAPI)
dev->drv->bus_mode |= 2;
if (dev->drv->bus_type < HDD_BUS_SCSI)
dev->drv->bus_mode |= 1;
scsi_disk_log(dev->log, "Bus type %i, bus mode %i\n",
dev->drv->bus_type, dev->drv->bus_mode);
dev->sense[0] = 0xf0;
dev->sense[7] = 10;
dev->tf->status = 0;
dev->tf->pos = 0;
dev->packet_status = PHASE_NONE;
scsi_disk_sense_key = scsi_disk_asc = scsi_disk_ascq = dev->unit_attention = 0;
scsi_disk_info = 0x00;
scsi_disk_mode_sense_load(dev);
}
}
/* Returns: 0 for none, 1 for PIO, 2 for DMA. */
static int
scsi_disk_current_mode(const scsi_disk_t *dev)
{
int ret = 0;
if (dev->drv->bus_type == HDD_BUS_SCSI)
ret = 2;
else if (dev->drv->bus_type == HDD_BUS_ATAPI) {
scsi_disk_log(dev->log, "ATAPI drive, setting to %s\n",
(dev->tf->features & 1) ? "DMA" : "PIO",
dev->id);
ret = (dev->tf->features & 1) ? 2 : 1;
}
return ret;
}
static void
scsi_disk_mode_sense_load(scsi_disk_t *dev)
{
char file_name[512] = { 0 };
memset(&dev->ms_pages_saved, 0, sizeof(mode_sense_pages_t));
memcpy(&dev->ms_pages_saved, &scsi_disk_mode_sense_pages_default,
sizeof(mode_sense_pages_t));
sprintf(file_name, "scsi_disk_%02i_mode_sense.bin", dev->id);
FILE *fp = plat_fopen(nvr_path(file_name), "rb");
if (fp) {
if (fread(dev->ms_pages_saved.pages[0x30], 1, 0x18, fp) != 0x18)
log_fatal(dev->log, "scsi_disk_mode_sense_load(): Error reading data\n");
fclose(fp);
}
}
static void
scsi_disk_mode_sense_save(const scsi_disk_t *dev)
{
char file_name[512] = { 0 };
sprintf(file_name, "scsi_disk_%02i_mode_sense.bin", dev->id);
FILE *fp = plat_fopen(nvr_path(file_name), "wb");
if (fp) {
fwrite(dev->ms_pages_saved.pages[0x30], 1, 0x18, fp);
fclose(fp);
}
}
/* SCSI Mode Sense 6/10 */
uint8_t
scsi_disk_mode_sense_read(const scsi_disk_t *dev, const uint8_t pgctl,
const uint8_t page, const uint8_t pos)
{
if (pgctl == 1)
return scsi_disk_mode_sense_pages_changeable.pages[page][pos];
if (page == GPMODE_RIGID_DISK_PAGE)
switch (pgctl) {
/* Rigid disk geometry page. */
case 0:
case 2:
case 3:
switch (pos) {
default:
case 0:
case 1:
return scsi_disk_mode_sense_pages_default.pages[page][pos];
case 2:
case 6:
case 9:
return (dev->drv->tracks >> 16) & 0xff;
case 3:
case 7:
case 10:
return (dev->drv->tracks >> 8) & 0xff;
case 4:
case 8:
case 11:
return dev->drv->tracks & 0xff;
case 5:
return dev->drv->hpc & 0xff;
}
default:
break;
}
else if (page == GPMODE_FORMAT_DEVICE_PAGE)
switch (pgctl) {
/* Format device page. */
case 0:
case 2:
case 3:
switch (pos) {
default:
case 0:
case 1:
return scsi_disk_mode_sense_pages_default.pages[page][pos];
/* Actual sectors + the 1 "alternate sector" we report. */
case 10:
return ((dev->drv->spt + 1) >> 8) & 0xff;
case 11:
return (dev->drv->spt + 1) & 0xff;
}
default:
break;
}
else
switch (pgctl) {
case 0:
case 3:
return dev->ms_pages_saved.pages[page][pos];
case 2:
return scsi_disk_mode_sense_pages_default.pages[page][pos];
default:
break;
}
return 0;
}
uint32_t
scsi_disk_mode_sense(const scsi_disk_t *dev, uint8_t *buf, uint32_t pos,
uint8_t page, const uint8_t block_descriptor_len)
{
int size = hdd_image_get_last_sector(dev->id);
page &= 0x3f;
if (block_descriptor_len) {
buf[pos++] = 1; /* Density code. */
buf[pos++] = (size >> 16) & 0xff; /* Number of blocks (0 = all). */
buf[pos++] = (size >> 8) & 0xff;
buf[pos++] = size & 0xff;
buf[pos++] = 0; /* Reserved. */
buf[pos++] = 0; /* Block length (0x200 = 512 bytes). */
buf[pos++] = 2;
buf[pos++] = 0;
}
for (uint8_t i = 0; i < 0x40; i++) {
if ((page == GPMODE_ALL_PAGES) || (page == i)) {
if (scsi_disk_mode_sense_page_flags & (1LL << (uint64_t) page)) {
const uint8_t pgctl = (page >> 6) & 3;
const uint8_t msplen = scsi_disk_mode_sense_read(dev, pgctl, i, 1);
buf[pos++] = scsi_disk_mode_sense_read(dev, pgctl, i, 0);
buf[pos++] = msplen;
scsi_disk_log(dev->log, "MODE SENSE: Page [%02X] length %i\n",
i, msplen);
for (uint8_t j = 0; j < msplen; j++)
buf[pos++] = scsi_disk_mode_sense_read(dev, pgctl, i, 2 + j);
}
}
}
return pos;
}
static void
scsi_disk_update_request_length(scsi_disk_t *dev, int len, const int block_len)
{
int bt;
int min_len = 0;
dev->max_transfer_len = dev->tf->request_length;
/* For media access commands, make sure the requested DRQ length matches the block length. */
switch (dev->current_cdb[0]) {
case 0x08:
case 0x0a:
case 0x28:
case 0x2a:
case 0xa8:
case 0xaa:
/* Round it to the nearest 2048 bytes. */
dev->max_transfer_len = (dev->max_transfer_len >> 9) << 9;
/* Make sure total length is not bigger than sum of the lengths of
all the requested blocks. */
bt = (dev->requested_blocks * block_len);
if (len > bt)
len = bt;
min_len = block_len;
if (len <= block_len) {
/* Total length is less or equal to block length. */
if (dev->max_transfer_len < block_len) {
/* Transfer a minimum of (block size) bytes. */
dev->max_transfer_len = block_len;
dev->packet_len = block_len;
break;
}
}
fallthrough;
default:
dev->packet_len = len;
break;
}
/* If the DRQ length is odd, and the total remaining length is bigger, make sure it's even. */
if ((dev->max_transfer_len & 1) && (dev->max_transfer_len < len))
dev->max_transfer_len &= 0xfffe;
/* If the DRQ length is smaller or equal in size to the total remaining length, set it to that. */
if (!dev->max_transfer_len)
dev->max_transfer_len = 65534;
if ((len <= dev->max_transfer_len) && (len >= min_len))
dev->tf->request_length = dev->max_transfer_len = len;
else if (len > dev->max_transfer_len)
dev->tf->request_length = dev->max_transfer_len;
return;
}
static double
scsi_disk_bus_speed(scsi_disk_t *dev)
{
double ret = -1.0;
if (dev && dev->drv && (dev->drv->bus_type == HDD_BUS_SCSI)) {
dev->callback = -1.0; /* Speed depends on SCSI controller */
return 0.0;
} else {
if (dev && dev->drv)
ret = ide_atapi_get_period(dev->drv->ide_channel);
if (ret == -1.0) {
if (dev)
dev->callback = -1.0;
return 0.0;
} else
/* We get bytes per µs, so divide 1000000.0 by it. */
return 1000000.0 / ret;
}
}
void
scsi_disk_command_common(scsi_disk_t *dev)
{
double bytes_per_second;
double period;
/* MAP: BUSY_STAT, no DRQ, phase 1. */
dev->tf->status = BUSY_STAT;
dev->tf->phase = 1;
dev->tf->pos = 0;
dev->callback = 0;
if (dev->packet_status == PHASE_COMPLETE) {
switch (dev->current_cdb[0]) {
case GPCMD_VERIFY_6:
case GPCMD_VERIFY_10:
case GPCMD_VERIFY_12:
case GPCMD_WRITE_6:
case GPCMD_WRITE_10:
case GPCMD_WRITE_AND_VERIFY_10:
case GPCMD_WRITE_12:
case GPCMD_WRITE_AND_VERIFY_12:
case GPCMD_WRITE_SAME_10:
/* Seek time is in us. */
period = hdd_timing_write(dev->drv, dev->drv->seek_pos,
dev->drv->seek_len);
scsi_disk_log(dev->log, "Seek period: %" PRIu64 " us\n",
(uint64_t) period);
dev->callback += period;
/* Account for seek time. */
bytes_per_second = scsi_bus_get_speed(dev->drv->scsi_id >> 4);
period = 1000000.0 / bytes_per_second;
scsi_disk_log(dev->log, "Byte transfer period: %" PRIu64 " us\n",
(uint64_t) period);
period = period * (double) (dev->packet_len);
scsi_disk_log(dev->log, "Sector transfer period: %" PRIu64 " us\n",
(uint64_t) period);
dev->callback += period;
break;
default:
dev->callback = 0;
break;
}
} else {
switch (dev->current_cdb[0]) {
case GPCMD_REZERO_UNIT:
case 0x0b:
case 0x2b:
/* Seek time is in us. */
period = hdd_seek_get_time(dev->drv, (dev->current_cdb[0] == GPCMD_REZERO_UNIT) ?
0 : dev->sector_pos, HDD_OP_SEEK, 0, 0.0);
scsi_disk_log(dev->log, "Seek period: %" PRIu64 " us\n",
(uint64_t) period);
dev->callback += period;
scsi_disk_set_callback(dev);
return;
case 0x08:
case 0x28:
case 0xa8:
/* Seek time is in us. */
period = hdd_timing_read(dev->drv, dev->drv->seek_pos,
dev->drv->seek_len);
scsi_disk_log(dev->log, "Seek period: %" PRIu64 " us\n",
(uint64_t) period);
dev->callback += period;
/* Account for seek time. */
bytes_per_second = scsi_bus_get_speed(dev->drv->scsi_id >> 4);
break;
case 0x25:
default:
bytes_per_second = scsi_disk_bus_speed(dev);
if (bytes_per_second == 0.0) {
dev->callback = -1; /* Speed depends on SCSI controller */
return;
}
break;
}
/*
For ATAPI, this will be 1000000.0 / µs_per_byte, and this will
convert it back to µs_per_byte.
*/
period = 1000000.0 / bytes_per_second;
scsi_disk_log(dev->log, "Byte transfer period: %" PRIu64 " us\n",
(uint64_t) period);
period = period * (double) (dev->packet_len);
scsi_disk_log(dev->log, "Sector transfer period: %" PRIu64 " us\n",
(uint64_t) period);
dev->callback += period;
}
scsi_disk_set_callback(dev);
}
static void
scsi_disk_command_complete(scsi_disk_t *dev)
{
dev->packet_status = PHASE_COMPLETE;
scsi_disk_command_common(dev);
}
static void
scsi_disk_command_read(scsi_disk_t *dev)
{
dev->packet_status = PHASE_DATA_IN;
scsi_disk_command_common(dev);
}
static void
scsi_disk_command_read_dma(scsi_disk_t *dev)
{
dev->packet_status = PHASE_DATA_IN_DMA;
scsi_disk_command_common(dev);
}
static void
scsi_disk_command_write(scsi_disk_t *dev)
{
dev->packet_status = PHASE_DATA_OUT;
scsi_disk_command_common(dev);
}
static void
scsi_disk_command_write_dma(scsi_disk_t *dev)
{
dev->packet_status = PHASE_DATA_OUT_DMA;
scsi_disk_command_common(dev);
}
/*
dev = Pointer to current SCSI disk device;
len = Total transfer length;
block_len = Length of a single block (why does it matter?!);
alloc_len = Allocated transfer length;
direction = Transfer direction (0 = read from host, 1 = write to host).
*/
static void
scsi_disk_data_command_finish(scsi_disk_t *dev, int len, const int block_len,
const int alloc_len, const int direction)
{
scsi_disk_log(dev->log, "Finishing command (%02X): %i, %i, %i, %i, %i\n",
dev->current_cdb[0], len, block_len, alloc_len, direction,
dev->tf->request_length);
dev->tf->pos = 0;
if (alloc_len >= 0) {
if (alloc_len < len)
len = alloc_len;
}
if ((len == 0) || (scsi_disk_current_mode(dev) == 0)) {
if (dev->drv->bus_type != HDD_BUS_SCSI)
dev->packet_len = 0;
scsi_disk_command_complete(dev);
} else {
if (scsi_disk_current_mode(dev) == 2) {
if (dev->drv->bus_type != HDD_BUS_SCSI)
dev->packet_len = alloc_len;
if (direction == 0)
scsi_disk_command_read_dma(dev);
else
scsi_disk_command_write_dma(dev);
} else {
scsi_disk_update_request_length(dev, len, block_len);
if ((dev->drv->bus_type != HDD_BUS_SCSI) &&
(dev->tf->request_length == 0))
scsi_disk_command_complete(dev);
else if (direction == 0)
scsi_disk_command_read(dev);
else
scsi_disk_command_write(dev);
}
}
scsi_disk_log(dev->log, "Status: %i, cylinder %i, packet length: %i, position: %i, "
"phase: %i\n",
dev->packet_status, dev->tf->request_length, dev->packet_len,
dev->tf->pos, dev->tf->phase);
}
static void
scsi_disk_sense_clear(scsi_disk_t *dev, UNUSED(int command))
{
scsi_disk_sense_key = scsi_disk_asc = scsi_disk_ascq = 0;
scsi_disk_info = 0x00000000;
}
static void
scsi_disk_set_phase(const scsi_disk_t *dev, const uint8_t phase)
{
const uint8_t scsi_bus = (dev->drv->scsi_id >> 4) & 0x0f;
const uint8_t scsi_id = dev->drv->scsi_id & 0x0f;
if (dev->drv->bus_type == HDD_BUS_SCSI)
scsi_devices[scsi_bus][scsi_id].phase = phase;
}
static void
scsi_disk_cmd_error(scsi_disk_t *dev)
{
scsi_disk_set_phase(dev, SCSI_PHASE_STATUS);
dev->tf->error = ((scsi_disk_sense_key & 0xf) << 4) | ABRT_ERR;
dev->tf->status = READY_STAT | ERR_STAT;
dev->tf->phase = 3;
dev->packet_status = PHASE_ERROR;
dev->callback = 50.0 * SCSI_TIME;
scsi_disk_set_callback(dev);
ui_sb_update_icon(SB_HDD | dev->drv->bus_type, 0);
ui_sb_update_icon_write(SB_HDD | dev->drv->bus_type, 0);
scsi_disk_log(dev->log, "ERROR: %02X/%02X/%02X\n", scsi_disk_sense_key,
scsi_disk_asc, scsi_disk_ascq);
}
static void
scsi_disk_buf_alloc(scsi_disk_t *dev, uint32_t len)
{
scsi_disk_log(dev->log, "Allocated buffer length: %i\n", len);
if (dev->temp_buffer == NULL)
dev->temp_buffer = (uint8_t *) malloc(len);
}
static void
scsi_disk_buf_free(scsi_disk_t *dev)
{
if (dev->temp_buffer) {
scsi_disk_log(dev->log, "Freeing buffer...\n");
free(dev->temp_buffer);
dev->temp_buffer = NULL;
}
}
static void
scsi_disk_bus_master_error(scsi_common_t *sc)
{
scsi_disk_t *dev = (scsi_disk_t *) sc;
scsi_disk_buf_free(dev);
scsi_disk_sense_key = scsi_disk_asc = scsi_disk_ascq = 0;
scsi_disk_info = (dev->sector_pos >> 24) |
((dev->sector_pos >> 16) << 8) |
((dev->sector_pos >> 8) << 16) |
( dev->sector_pos << 24);
scsi_disk_cmd_error(dev);
}
static void
scsi_disk_write_error(scsi_disk_t *dev)
{
scsi_disk_sense_key = SENSE_MEDIUM_ERROR;
scsi_disk_asc = ASC_WRITE_ERROR;
scsi_disk_ascq = 0;
scsi_disk_info = (dev->sector_pos >> 24) |
((dev->sector_pos >> 16) << 8) |
((dev->sector_pos >> 8) << 16) |
( dev->sector_pos << 24);
scsi_disk_cmd_error(dev);
}
static void
scsi_disk_read_error(scsi_disk_t *dev)
{
scsi_disk_sense_key = SENSE_MEDIUM_ERROR;
scsi_disk_asc = ASC_UNRECOVERED_READ_ERROR;
scsi_disk_ascq = 0;
scsi_disk_info = (dev->sector_pos >> 24) |
((dev->sector_pos >> 16) << 8) |
((dev->sector_pos >> 8) << 16) |
( dev->sector_pos << 24);
scsi_disk_cmd_error(dev);
}
static void
scsi_disk_invalid_lun(scsi_disk_t *dev, const uint8_t lun)
{
scsi_disk_sense_key = SENSE_ILLEGAL_REQUEST;
scsi_disk_asc = ASC_INV_LUN;
scsi_disk_ascq = 0;
scsi_disk_set_phase(dev, SCSI_PHASE_STATUS);
scsi_disk_info = lun << 24;
scsi_disk_cmd_error(dev);
}
static void
scsi_disk_illegal_opcode(scsi_disk_t *dev, const uint8_t opcode)
{
scsi_disk_sense_key = SENSE_ILLEGAL_REQUEST;
scsi_disk_asc = ASC_ILLEGAL_OPCODE;
scsi_disk_ascq = 0;
scsi_disk_info = opcode << 24;
scsi_disk_cmd_error(dev);
}
static void
scsi_disk_lba_out_of_range(scsi_disk_t *dev)
{
scsi_disk_sense_key = SENSE_ILLEGAL_REQUEST;
scsi_disk_asc = ASC_LBA_OUT_OF_RANGE;
scsi_disk_ascq = 0;
scsi_disk_info = (dev->sector_pos >> 24) |
((dev->sector_pos >> 16) << 8) |
((dev->sector_pos >> 8) << 16) |
( dev->sector_pos << 24);
scsi_disk_cmd_error(dev);
}
static void
scsi_disk_invalid_field(scsi_disk_t *dev, const uint32_t field)
{
scsi_disk_sense_key = SENSE_ILLEGAL_REQUEST;
scsi_disk_asc = ASC_INV_FIELD_IN_CMD_PACKET;
scsi_disk_ascq = 0;
scsi_disk_info = (field >> 24) |
((field >> 16) << 8) |
((field >> 8) << 16) |
( field << 24);
scsi_disk_cmd_error(dev);
dev->tf->status = 0x53;
}
static void
scsi_disk_invalid_field_pl(scsi_disk_t *dev, const uint32_t field)
{
scsi_disk_sense_key = SENSE_ILLEGAL_REQUEST;
scsi_disk_asc = ASC_INV_FIELD_IN_PARAMETER_LIST;
scsi_disk_ascq = 0;
scsi_disk_info = (field >> 24) |
((field >> 16) << 8) |
((field >> 8) << 16) |
( field << 24);
scsi_disk_cmd_error(dev);
dev->tf->status = 0x53;
}
static void
scsi_disk_data_phase_error(scsi_disk_t *dev, const uint32_t info)
{
scsi_disk_sense_key = SENSE_ILLEGAL_REQUEST;
scsi_disk_asc = ASC_DATA_PHASE_ERROR;
scsi_disk_ascq = 0;
scsi_disk_info = (info >> 24) |
((info >> 16) << 8) |
((info >> 8) << 16) |
( info << 24);
scsi_disk_cmd_error(dev);
}
static int
scsi_disk_blocks(scsi_disk_t *dev, int32_t *len, UNUSED(int first_batch), const int out)
{
const uint32_t medium_size = hdd_image_get_last_sector(dev->id) + 1;
*len = 0;
if (!dev->sector_len) {
scsi_disk_command_complete(dev);
return -1;
}
scsi_disk_log(dev->log, "%sing %i blocks starting from %i...\n", out ? "Writ" : "Read",
dev->requested_blocks, dev->sector_pos);
if (dev->sector_pos >= medium_size) {
scsi_disk_log(dev->log, "Trying to %s beyond the end of disk\n",
out ? "write" : "read");
scsi_disk_lba_out_of_range(dev);
return 0;
}
*len = dev->requested_blocks << 9;
for (int i = 0; i < dev->requested_blocks; i++) {
if (out) {
if (hdd_image_write(dev->id, dev->sector_pos, 1, dev->temp_buffer +
(i << 9)) < 0) {
scsi_disk_write_error(dev);
return -1;
}
} else {
if (hdd_image_read(dev->id, dev->sector_pos, 1, dev->temp_buffer +
(i << 9)) < 0) {
scsi_disk_read_error(dev);
return -1;
}
}
dev->sector_pos++;
}
scsi_disk_log(dev->log, "%s %i bytes of blocks...\n", out ? "Written" : "Read", *len);
dev->sector_len -= dev->requested_blocks;
return 1;
}
static int
scsi_disk_pre_execution_check(scsi_disk_t *dev, const uint8_t *cdb)
{
if ((cdb[0] != GPCMD_REQUEST_SENSE) && (dev->cur_lun == SCSI_LUN_USE_CDB) &&
(cdb[1] & 0xe0)) {
scsi_disk_log(dev->log, "Attempting to execute a unknown command "
"targeted at SCSI LUN %i\n",
((dev->tf->request_length >> 5) & 7));
scsi_disk_invalid_lun(dev, cdb[1] >> 5);
return 0;
}
if (!(scsi_disk_command_flags[cdb[0]] & IMPLEMENTED)) {
scsi_disk_log(dev->log, "Attempting to execute unknown "
"command %02X over %s\n", cdb[0],
(dev->drv->bus_type == HDD_BUS_SCSI) ? "SCSI" : "ATAPI");
scsi_disk_illegal_opcode(dev, cdb[0]);
return 0;
}
if ((dev->drv->bus_type < HDD_BUS_SCSI) &&
(scsi_disk_command_flags[cdb[0]] & SCSI_ONLY)) {
scsi_disk_log(dev->log, "Attempting to execute SCSI-only command %02X "
"over ATAPI\n", cdb[0]);
scsi_disk_illegal_opcode(dev, cdb[0]);
return 0;
}
if ((dev->drv->bus_type == HDD_BUS_SCSI) &&
(scsi_disk_command_flags[cdb[0]] & ATAPI_ONLY)) {
scsi_disk_log(dev->log, "Attempting to execute ATAPI-only command %02X "
"over SCSI\n", cdb[0]);
scsi_disk_illegal_opcode(dev, cdb[0]);
return 0;
}
/*
Unless the command is REQUEST SENSE, clear the sense. This will *NOT*
the UNIT ATTENTION condition if it's set.
*/
if (cdb[0] != GPCMD_REQUEST_SENSE)
scsi_disk_sense_clear(dev, cdb[0]);
scsi_disk_log(dev->log, "Continuing with command %02X\n", cdb[0]);
return 1;
}
static void
scsi_disk_seek(const scsi_disk_t *dev, const uint32_t pos)
{
/* scsi_disk_log(dev->log, "Seek %08X\n", pos); */
hdd_image_seek(dev->id, pos);
}
static void
scsi_disk_rezero(scsi_disk_t *dev)
{
if (dev->id != 0xff) {
dev->sector_pos = dev->sector_len = 0;
scsi_disk_seek(dev, 0);
}
}
void
scsi_disk_reset(scsi_common_t *sc)
{
scsi_disk_t *dev = (scsi_disk_t *) sc;
scsi_disk_rezero(dev);
dev->tf->status = 0;
dev->callback = 0.0;
scsi_disk_set_callback(dev);
dev->tf->phase = 1;
dev->tf->request_length = 0xEB14;
dev->packet_status = PHASE_NONE;
dev->unit_attention = 0;
dev->cur_lun = SCSI_LUN_USE_CDB;
scsi_disk_sense_key = scsi_disk_asc = scsi_disk_ascq = dev->unit_attention = 0;
scsi_disk_info = 0x00;
}
void
scsi_disk_request_sense(scsi_disk_t *dev, uint8_t *buffer,
const uint8_t alloc_length, const int desc)
{
/* Will return 18 bytes of 0. */
if (alloc_length != 0) {
memset(buffer, 0, alloc_length);
if (desc) {
buffer[1] = scsi_disk_sense_key;
buffer[2] = scsi_disk_asc;
buffer[3] = scsi_disk_ascq;
} else
memcpy(buffer, dev->sense, alloc_length);
buffer[0] = desc ? 0x70 : 0xf0;
buffer[7] = 10;
scsi_disk_log(dev->log, "Reporting sense: %02X %02X %02X\n",
buffer[2], buffer[12], buffer[13]);
/* Clear the sense stuff as per the spec. */
scsi_disk_sense_clear(dev, GPCMD_REQUEST_SENSE);
}
}
static void
scsi_disk_request_sense_for_scsi(scsi_common_t *sc, uint8_t *buffer,
const uint8_t alloc_length)
{
scsi_disk_t *dev = (scsi_disk_t *) sc;
scsi_disk_request_sense(dev, buffer, alloc_length, 0);
}
static void
scsi_disk_set_buf_len(const scsi_disk_t *dev, int32_t *BufLen, int32_t *src_len)
{
if (dev->drv->bus_type == HDD_BUS_SCSI) {
if (*BufLen == -1)
*BufLen = *src_len;
else {
*BufLen = MIN(*src_len, *BufLen);
*src_len = *BufLen;
}
scsi_disk_log(dev->log, "Actual transfer length: %i\n", *BufLen);
}
}
static void
scsi_disk_command(scsi_common_t *sc, const uint8_t *cdb)
{
char device_identify[9] = { '8', '6', 'B', '_', 'H', 'D', '0', '0', 0 };
char device_identify_ex[15] = { '8', '6', 'B', '_', 'H', 'D', '0', '0', ' ',
'v', '1', '.', '0', '0', 0 };
scsi_disk_t * dev = (scsi_disk_t *) sc;
const uint32_t last_sector = hdd_image_get_last_sector(dev->id);
const uint8_t scsi_bus = (dev->drv->scsi_id >> 4) & 0x0f;
const uint8_t scsi_id = dev->drv->scsi_id & 0x0f;
int32_t blen = 0;
int pos = 0;
int idx = 0;
int block_desc;
int ret;
int32_t * BufLen;
int32_t len;
int32_t max_len;
int32_t alloc_length;
unsigned size_idx;
unsigned preamble_len;
if (dev->drv->bus_type == HDD_BUS_SCSI) {
BufLen = &scsi_devices[scsi_bus][scsi_id].buffer_length;
dev->tf->status &= ~ERR_STAT;
} else {
BufLen = &blen;
dev->tf->error = 0;
}
dev->packet_len = 0;
dev->request_pos = 0;
device_identify[6] = (dev->id / 10) + 0x30;
device_identify[7] = (dev->id % 10) + 0x30;
device_identify_ex[6] = (dev->id / 10) + 0x30;
device_identify_ex[7] = (dev->id % 10) + 0x30;
device_identify_ex[10] = EMU_VERSION_EX[0];
device_identify_ex[12] = EMU_VERSION_EX[2];
device_identify_ex[13] = EMU_VERSION_EX[3];
memcpy(dev->current_cdb, cdb, 12);
if (cdb[0] != 0) {
scsi_disk_log(dev->log, "Command 0x%02X, Sense Key %02X, Asc %02X, Ascq %02X\n",
cdb[0], scsi_disk_sense_key, scsi_disk_asc, scsi_disk_ascq);
scsi_disk_log(dev->log, "Request length: %04X\n", dev->tf->request_length);
scsi_disk_log(dev->log, "CDB: %02X %02X %02X %02X %02X %02X %02X %02X "
"%02X %02X %02X %02X\n",
cdb[0], cdb[1], cdb[2], cdb[3], cdb[4], cdb[5], cdb[6], cdb[7],
cdb[8], cdb[9], cdb[10], cdb[11]);
}
dev->sector_len = 0;
scsi_disk_set_phase(dev, SCSI_PHASE_STATUS);
/*
This handles the Not Ready/Unit Attention check if it has to be
handled at this point.
*/
if (scsi_disk_pre_execution_check(dev, cdb) == 0)
return;
switch (cdb[0]) {
case GPCMD_SEND_DIAGNOSTIC:
if (!(cdb[1] & (1 << 2))) {
scsi_disk_invalid_field(dev, cdb[1]);
return;
}
fallthrough;
case GPCMD_SCSI_RESERVE:
case GPCMD_SCSI_RELEASE:
case GPCMD_TEST_UNIT_READY:
case GPCMD_FORMAT_UNIT:
scsi_disk_set_phase(dev, SCSI_PHASE_STATUS);
scsi_disk_command_complete(dev);
break;
case GPCMD_REZERO_UNIT:
dev->sector_pos = dev->sector_len = 0;
dev->drv->seek_pos = dev->sector_pos;
dev->drv->seek_len = dev->sector_len;
scsi_disk_seek(dev, 0);
scsi_disk_set_phase(dev, SCSI_PHASE_STATUS);
break;
case GPCMD_REQUEST_SENSE:
len = cdb[4];
if (!len) {
scsi_disk_set_phase(dev, SCSI_PHASE_STATUS);
dev->packet_status = PHASE_COMPLETE;
dev->callback = 20.0 * SCSI_TIME;
scsi_disk_set_callback(dev);
break;
}
scsi_disk_buf_alloc(dev, 256);
scsi_disk_set_buf_len(dev, BufLen, &len);
len = (cdb[1] & 1) ? 8 : 18;
scsi_disk_request_sense(dev, dev->temp_buffer, *BufLen, cdb[1] & 1);
scsi_disk_set_phase(dev, SCSI_PHASE_DATA_IN);
scsi_disk_data_command_finish(dev, len, len, *BufLen, 0);
break;
case GPCMD_MECHANISM_STATUS:
scsi_disk_set_phase(dev, SCSI_PHASE_DATA_IN);
len = (cdb[8] << 8) | cdb[9];
scsi_disk_buf_alloc(dev, 8);
scsi_disk_set_buf_len(dev, BufLen, &len);
memset(dev->temp_buffer, 0, 8);
dev->temp_buffer[5] = 1;
scsi_disk_data_command_finish(dev, 8, 8, len, 0);
break;
case GPCMD_READ_6:
case GPCMD_READ_10:
case GPCMD_READ_12:
scsi_disk_set_phase(dev, SCSI_PHASE_DATA_IN);
alloc_length = 512;
switch (cdb[0]) {
case GPCMD_READ_6:
dev->sector_len = cdb[4];
/*
For READ (6) and WRITE (6), a length of 0 indicates a
transfer of 256 sectors.
*/
if (dev->sector_len == 0)
dev->sector_len = 256;
dev->sector_pos = ((((uint32_t) cdb[1]) & 0x1f) << 16) |
(((uint32_t) cdb[2]) << 8) | ((uint32_t) cdb[3]);
break;
case GPCMD_READ_10:
dev->sector_len = (cdb[7] << 8) | cdb[8];
dev->sector_pos = (cdb[2] << 24) | (cdb[3] << 16) |
(cdb[4] << 8) | cdb[5];
break;
case GPCMD_READ_12:
dev->sector_len = (((uint32_t) cdb[6]) << 24) |
(((uint32_t) cdb[7]) << 16) |
(((uint32_t) cdb[8]) << 8) | ((uint32_t) cdb[9]);
dev->sector_pos = (((uint32_t) cdb[2]) << 24) |
(((uint32_t) cdb[3]) << 16) |
(((uint32_t) cdb[4]) << 8) | ((uint32_t) cdb[5]);
break;
default:
break;
}
if (dev->sector_pos > last_sector)
scsi_disk_lba_out_of_range(dev);
else {
if (dev->sector_len) {
max_len = dev->sector_len;
dev->requested_blocks = max_len;
dev->packet_len = max_len * alloc_length;
scsi_disk_buf_alloc(dev, dev->packet_len);
dev->drv->seek_pos = dev->sector_pos;
dev->drv->seek_len = dev->sector_len;
ret = scsi_disk_blocks(dev, &alloc_length, 1, 0);
alloc_length = dev->requested_blocks * 512;
if (ret > 0) {
dev->requested_blocks = max_len;
dev->packet_len = alloc_length;
scsi_disk_set_buf_len(dev, BufLen, (int32_t *) &dev->packet_len);
scsi_disk_data_command_finish(dev, alloc_length, 512, alloc_length, 0);
ui_sb_update_icon(SB_HDD | dev->drv->bus_type, dev->packet_status != PHASE_COMPLETE);
} else {
scsi_disk_set_phase(dev, SCSI_PHASE_STATUS);
dev->packet_status = (ret < 0) ? PHASE_ERROR : PHASE_COMPLETE;
dev->callback = 20.0 * SCSI_TIME;
scsi_disk_set_callback(dev);
scsi_disk_buf_free(dev);
}
} else {
scsi_disk_set_phase(dev, SCSI_PHASE_STATUS);
scsi_disk_log(dev->log, "All done - callback set\n");
dev->packet_status = PHASE_COMPLETE;
dev->callback = 20.0 * SCSI_TIME;
scsi_disk_set_callback(dev);
}
}
break;
case GPCMD_VERIFY_6:
case GPCMD_VERIFY_10:
case GPCMD_VERIFY_12:
if (!(cdb[1] & 2)) {
scsi_disk_set_phase(dev, SCSI_PHASE_STATUS);
scsi_disk_command_complete(dev);
break;
}
fallthrough;
case GPCMD_WRITE_6:
case GPCMD_WRITE_10:
case GPCMD_WRITE_AND_VERIFY_10:
case GPCMD_WRITE_12:
case GPCMD_WRITE_AND_VERIFY_12:
scsi_disk_set_phase(dev, SCSI_PHASE_DATA_OUT);
alloc_length = 512;
switch (cdb[0]) {
case GPCMD_VERIFY_6:
case GPCMD_WRITE_6:
dev->sector_len = cdb[4];
/*
For READ (6) and WRITE (6), a length of 0 indicates a
transfer of 256 sectors.
*/
if (dev->sector_len == 0)
dev->sector_len = 256;
dev->sector_pos = ((((uint32_t) cdb[1]) & 0x1f) << 16) |
(((uint32_t) cdb[2]) << 8) | ((uint32_t) cdb[3]);
scsi_disk_log(dev->log, "Length: %i, LBA: %i\n",
dev->sector_len, dev->sector_pos);
break;
case GPCMD_VERIFY_10:
case GPCMD_WRITE_10:
case GPCMD_WRITE_AND_VERIFY_10:
dev->sector_len = (cdb[7] << 8) | cdb[8];
dev->sector_pos = (cdb[2] << 24) | (cdb[3] << 16) |
(cdb[4] << 8) | cdb[5];
scsi_disk_log(dev->log, "Length: %i, LBA: %i\n",
dev->sector_len, dev->sector_pos);
break;
case GPCMD_VERIFY_12:
case GPCMD_WRITE_12:
case GPCMD_WRITE_AND_VERIFY_12:
dev->sector_len = (((uint32_t) cdb[6]) << 24) |
(((uint32_t) cdb[7]) << 16) |
(((uint32_t) cdb[8]) << 8) | ((uint32_t) cdb[9]);
dev->sector_pos = (((uint32_t) cdb[2]) << 24) |
(((uint32_t) cdb[3]) << 16) |
(((uint32_t) cdb[4]) << 8) | ((uint32_t) cdb[5]);
break;
default:
break;
}
if (dev->sector_pos > last_sector)
scsi_disk_lba_out_of_range(dev);
else {
if (dev->sector_len) {
dev->drv->seek_pos = dev->sector_pos;
dev->drv->seek_len = dev->sector_len;
max_len = dev->sector_len;
dev->requested_blocks = max_len;
dev->packet_len = max_len * alloc_length;
scsi_disk_buf_alloc(dev, dev->packet_len);
dev->requested_blocks = max_len;
dev->packet_len = max_len << 9;
scsi_disk_set_buf_len(dev, BufLen, (int32_t *) &dev->packet_len);
scsi_disk_data_command_finish(dev, dev->packet_len, 512, dev->packet_len, 1);
ui_sb_update_icon_write(SB_HDD | dev->drv->bus_type, dev->packet_status != PHASE_COMPLETE);
} else {
scsi_disk_set_phase(dev, SCSI_PHASE_STATUS);
scsi_disk_log(dev->log, "All done - callback set\n");
dev->packet_status = PHASE_COMPLETE;
dev->callback = 20.0 * SCSI_TIME;
scsi_disk_set_callback(dev);
}
}
break;
case GPCMD_WRITE_SAME_10:
alloc_length = 512;
if ((cdb[1] & 6) == 6)
scsi_disk_invalid_field(dev, cdb[1]);
else {
dev->sector_len = (cdb[7] << 8) | cdb[8];
dev->sector_pos = (cdb[2] << 24) | (cdb[3] << 16) | (cdb[4] << 8) | cdb[5];
if (dev->sector_pos > last_sector)
scsi_disk_lba_out_of_range(dev);
else {
if (dev->sector_len) {
scsi_disk_buf_alloc(dev, alloc_length);
scsi_disk_set_buf_len(dev, BufLen, (int32_t *) &dev->packet_len);
dev->requested_blocks = 1;
dev->packet_len = alloc_length;
scsi_disk_set_phase(dev, SCSI_PHASE_DATA_OUT);
scsi_disk_data_command_finish(dev, 512, 512, alloc_length, 1);
ui_sb_update_icon_write(SB_HDD | dev->drv->bus_type,
dev->packet_status != PHASE_COMPLETE);
} else {
scsi_disk_set_phase(dev, SCSI_PHASE_STATUS);
scsi_disk_log(dev->log, "All done - callback set\n");
dev->packet_status = PHASE_COMPLETE;
dev->callback = 20.0 * SCSI_TIME;
scsi_disk_set_callback(dev);
}
}
}
break;
case GPCMD_MODE_SENSE_6:
case GPCMD_MODE_SENSE_10:
scsi_disk_set_phase(dev, SCSI_PHASE_DATA_IN);
if (dev->drv->bus_type == HDD_BUS_SCSI)
block_desc = ((cdb[1] >> 3) & 1) ? 0 : 1;
else
block_desc = 0;
if (cdb[0] == GPCMD_MODE_SENSE_6) {
len = cdb[4];
scsi_disk_buf_alloc(dev, 256);
} else {
len = (cdb[8] | (cdb[7] << 8));
scsi_disk_buf_alloc(dev, 65536);
}
memset(dev->temp_buffer, 0, len);
alloc_length = len;
if (cdb[0] == GPCMD_MODE_SENSE_6) {
len = scsi_disk_mode_sense(dev, dev->temp_buffer, 4,
cdb[2], block_desc);
if (len > alloc_length)
len = alloc_length;
dev->temp_buffer[0] = len - 1;
dev->temp_buffer[1] = 0;
if (block_desc)
dev->temp_buffer[3] = 8;
} else {
len = scsi_disk_mode_sense(dev, dev->temp_buffer, 8, cdb[2], block_desc);
if (len > alloc_length)
len = alloc_length;
dev->temp_buffer[0] = (len - 2) >> 8;
dev->temp_buffer[1] = (len - 2) & 255;
dev->temp_buffer[2] = 0;
if (block_desc) {
dev->temp_buffer[6] = 0;
dev->temp_buffer[7] = 8;
}
}
if (len > alloc_length)
len = alloc_length;
else if (len < alloc_length)
alloc_length = len;
scsi_disk_set_buf_len(dev, BufLen, &alloc_length);
scsi_disk_log(dev->log, "Reading mode page: %02X...\n", cdb[2]);
scsi_disk_data_command_finish(dev, len, len, alloc_length, 0);
break;
case GPCMD_MODE_SELECT_6:
case GPCMD_MODE_SELECT_10:
scsi_disk_set_phase(dev, SCSI_PHASE_DATA_OUT);
if (cdb[0] == GPCMD_MODE_SELECT_6) {
len = cdb[4];
scsi_disk_buf_alloc(dev, 256);
} else {
len = (cdb[7] << 8) | cdb[8];
scsi_disk_buf_alloc(dev, 65536);
}
scsi_disk_set_buf_len(dev, BufLen, &len);
dev->total_length = len;
dev->do_page_save = cdb[1] & 1;
scsi_disk_data_command_finish(dev, len, len, len, 1);
break;
case GPCMD_INQUIRY:
max_len = cdb[3];
max_len <<= 8;
max_len |= cdb[4];
if ((!max_len) || (*BufLen == 0)) {
scsi_disk_set_phase(dev, SCSI_PHASE_STATUS);
/* scsi_disk_log(dev->log, "All done - callback set\n"); */
dev->packet_status = PHASE_COMPLETE;
dev->callback = 20.0 * SCSI_TIME;
break;
}
scsi_disk_buf_alloc(dev, 65536);
if (cdb[1] & 1) {
preamble_len = 4;
size_idx = 3;
dev->temp_buffer[idx++] = 05;
dev->temp_buffer[idx++] = cdb[2];
dev->temp_buffer[idx++] = 0;
idx++;
switch (cdb[2]) {
case 0x00:
dev->temp_buffer[idx++] = 0x00;
dev->temp_buffer[idx++] = 0x83;
break;
case 0x83:
if (idx + 24 > max_len) {
scsi_disk_buf_free(dev);
scsi_disk_data_phase_error(dev, idx + 24);
return;
}
dev->temp_buffer[idx++] = 0x02;
dev->temp_buffer[idx++] = 0x00;
dev->temp_buffer[idx++] = 0x00;
dev->temp_buffer[idx++] = 20;
/* Serial */
ide_padstr8(dev->temp_buffer + idx, 20, "53R141");
idx += 20;
if (idx + 72 > cdb[4])
goto atapi_out;
dev->temp_buffer[idx++] = 0x02;
dev->temp_buffer[idx++] = 0x01;
dev->temp_buffer[idx++] = 0x00;
dev->temp_buffer[idx++] = 68;
/* Vendor */
ide_padstr8(dev->temp_buffer + idx, 8, EMU_NAME);
idx += 8;
/* Product */
ide_padstr8(dev->temp_buffer + idx, 40, device_identify_ex);
idx += 40;
/* Product */
ide_padstr8(dev->temp_buffer + idx, 20, "53R141");
idx += 20;
break;
default:
scsi_disk_log(dev->log, "INQUIRY: Invalid page: %02X\n", cdb[2]);
scsi_disk_invalid_field(dev, cdb[2]);
scsi_disk_buf_free(dev);
return;
}
} else {
preamble_len = 5;
size_idx = 4;
memset(dev->temp_buffer, 0, 8);
if ((cdb[1] & 0xe0) || ((dev->cur_lun > 0x00) && (dev->cur_lun < 0xff)))
dev->temp_buffer[0] = 0x7f; /* No physical device on this LUN */
else
dev->temp_buffer[0] = 0; /* SCSI HD */
dev->temp_buffer[1] = 0; /* Fixed */
/* SCSI-2 compliant */
dev->temp_buffer[2] = (dev->drv->bus_type == HDD_BUS_SCSI) ? 0x02 : 0x00;
dev->temp_buffer[3] = (dev->drv->bus_type == HDD_BUS_SCSI) ? 0x02 : 0x21;
dev->temp_buffer[4] = 31;
dev->temp_buffer[6] = 1; /* 16-bit transfers supported */
dev->temp_buffer[7] = 0x20; /* Wide bus supported */
/* Vendor */
ide_padstr8(dev->temp_buffer + 8, 8, EMU_NAME);
/* Product */
ide_padstr8(dev->temp_buffer + 16, 16, device_identify);
/* Revision */
ide_padstr8(dev->temp_buffer + 32, 4, EMU_VERSION_EX);
idx = 36;
if (max_len == 96) {
dev->temp_buffer[4] = 91;
idx = 96;
}
}
atapi_out:
dev->temp_buffer[size_idx] = idx - preamble_len;
len = idx;
if (len > max_len)
len = max_len;
scsi_disk_set_buf_len(dev, BufLen, &len);
if (len > *BufLen)
len = *BufLen;
scsi_disk_set_phase(dev, SCSI_PHASE_DATA_IN);
scsi_disk_data_command_finish(dev, len, len, max_len, 0);
break;
case GPCMD_PREVENT_REMOVAL:
scsi_disk_set_phase(dev, SCSI_PHASE_STATUS);
scsi_disk_command_complete(dev);
break;
case GPCMD_SEEK_6:
case GPCMD_SEEK_10:
switch (cdb[0]) {
case GPCMD_SEEK_6:
pos = (cdb[2] << 8) | cdb[3];
break;
case GPCMD_SEEK_10:
pos = (cdb[2] << 24) | (cdb[3] << 16) | (cdb[4] << 8) | cdb[5];
break;
default:
break;
}
dev->drv->seek_pos = dev->sector_pos;
dev->drv->seek_len = 0;
scsi_disk_seek(dev, pos);
scsi_disk_set_phase(dev, SCSI_PHASE_STATUS);
scsi_disk_command_complete(dev);
break;
case GPCMD_READ_CDROM_CAPACITY:
scsi_disk_buf_alloc(dev, 8);
max_len = hdd_image_get_last_sector(dev->id);
memset(dev->temp_buffer, 0, 8);
dev->temp_buffer[0] = (max_len >> 24) & 0xff;
dev->temp_buffer[1] = (max_len >> 16) & 0xff;
dev->temp_buffer[2] = (max_len >> 8) & 0xff;
dev->temp_buffer[3] = max_len & 0xff;
dev->temp_buffer[6] = 2;
len = 8;
scsi_disk_set_buf_len(dev, BufLen, &len);
scsi_disk_set_phase(dev, SCSI_PHASE_DATA_IN);
scsi_disk_data_command_finish(dev, len, len, len, 0);
break;
default:
scsi_disk_illegal_opcode(dev, cdb[0]);
break;
}
/* scsi_disk_log(dev->log, "Phase: %02X, request length: %i\n",
dev->tf->phase, dev->tf->request_length); */
if ((dev->packet_status == PHASE_COMPLETE) || (dev->packet_status == PHASE_ERROR))
scsi_disk_buf_free(dev);
}
static void
scsi_disk_command_stop(scsi_common_t *sc)
{
scsi_disk_t *dev = (scsi_disk_t *) sc;
scsi_disk_command_complete(dev);
scsi_disk_buf_free(dev);
}
static uint8_t
scsi_disk_phase_data_out(scsi_common_t *sc)
{
scsi_disk_t *dev = (scsi_disk_t *) sc;
const uint8_t scsi_bus = (dev->drv->scsi_id >> 4) & 0x0f;
const uint8_t scsi_id = dev->drv->scsi_id & 0x0f;
const int32_t *BufLen = &scsi_devices[scsi_bus][scsi_id].buffer_length;
const uint32_t last_sector = hdd_image_get_last_sector(dev->id);
int len = 0;
uint8_t error = 0;
int ret = 1;
int i;
uint32_t last_to_write;
uint16_t block_desc_len;
uint16_t pos;
uint16_t param_list_len;
uint8_t hdr_len;
uint8_t val;
if (!*BufLen)
scsi_disk_set_phase(dev, SCSI_PHASE_STATUS);
else switch (dev->current_cdb[0]) {
default:
log_fatal(dev->log, "Bad Command for phase 2 (%02X)\n", dev->current_cdb[0]);
ret = 0;
break;
case GPCMD_VERIFY_6:
case GPCMD_VERIFY_10:
case GPCMD_VERIFY_12:
break;
case GPCMD_WRITE_6:
case GPCMD_WRITE_10:
case GPCMD_WRITE_AND_VERIFY_10:
case GPCMD_WRITE_12:
case GPCMD_WRITE_AND_VERIFY_12:
if (dev->requested_blocks > 0)
scsi_disk_blocks(dev, &len, 1, 1);
break;
case GPCMD_WRITE_SAME_10:
if (!dev->current_cdb[7] && !dev->current_cdb[8])
last_to_write = last_sector;
else
last_to_write = dev->sector_pos + dev->sector_len - 1;
for (i = dev->sector_pos; i <= (int) last_to_write; i++) {
if (dev->current_cdb[1] & 2) {
dev->temp_buffer[0] = (i >> 24) & 0xff;
dev->temp_buffer[1] = (i >> 16) & 0xff;
dev->temp_buffer[2] = (i >> 8) & 0xff;
dev->temp_buffer[3] = i & 0xff;
} else if (dev->current_cdb[1] & 4) {
uint32_t s = (i % dev->drv->spt);
uint32_t h = ((i - s) / dev->drv->spt) % dev->drv->hpc;
uint32_t c = ((i - s) / dev->drv->spt) / dev->drv->hpc;
dev->temp_buffer[0] = (c >> 16) & 0xff;
dev->temp_buffer[1] = (c >> 8) & 0xff;
dev->temp_buffer[2] = c & 0xff;
dev->temp_buffer[3] = h & 0xff;
dev->temp_buffer[4] = (s >> 24) & 0xff;
dev->temp_buffer[5] = (s >> 16) & 0xff;
dev->temp_buffer[6] = (s >> 8) & 0xff;
dev->temp_buffer[7] = s & 0xff;
}
if (hdd_image_write(dev->id, i, 1, dev->temp_buffer) < 0)
scsi_disk_write_error(dev);
}
break;
case GPCMD_MODE_SELECT_6:
case GPCMD_MODE_SELECT_10:
if (dev->current_cdb[0] == GPCMD_MODE_SELECT_10) {
hdr_len = 8;
param_list_len = dev->current_cdb[7];
param_list_len <<= 8;
param_list_len |= dev->current_cdb[8];
} else {
hdr_len = 4;
param_list_len = dev->current_cdb[4];
}
if (dev->drv->bus_type == HDD_BUS_SCSI) {
if (dev->current_cdb[0] == GPCMD_MODE_SELECT_6) {
block_desc_len = dev->temp_buffer[2];
block_desc_len <<= 8;
block_desc_len |= dev->temp_buffer[3];
} else {
block_desc_len = dev->temp_buffer[6];
block_desc_len <<= 8;
block_desc_len |= dev->temp_buffer[7];
}
} else
block_desc_len = 0;
pos = hdr_len + block_desc_len;
while (1) {
if (pos >= param_list_len) {
scsi_disk_log(dev->log, "Buffer has only block descriptor\n");
break;
}
const uint8_t page = dev->temp_buffer[pos] & 0x3f;
const uint8_t page_len = dev->temp_buffer[pos + 1];
pos += 2;
if (!(scsi_disk_mode_sense_page_flags & (1LL << ((uint64_t) page))))
error |= 1;
else for (i = 0; i < page_len; i++) {
const uint8_t old = dev->ms_pages_saved.pages[page][i + 2];
const uint8_t ch = scsi_disk_mode_sense_pages_changeable.pages[page][i + 2];
val = dev->temp_buffer[pos + i];
if (val != old) {
if (ch)
dev->ms_pages_saved.pages[page][i + 2] = val;
else {
scsi_disk_invalid_field_pl(dev, val);
error |= 1;
}
}
}
pos += page_len;
val = scsi_disk_mode_sense_pages_default.pages[page][0] & 0x80;
if (dev->do_page_save && val)
scsi_disk_mode_sense_save(dev);
if (pos >= dev->total_length)
break;
}
if (error)
scsi_disk_buf_free(dev);
break;
}
scsi_disk_command_stop((scsi_common_t *) dev);
return ret;
}
static int
scsi_disk_get_max(UNUSED(const ide_t *ide), int ide_has_dma, const int type)
{
int ret;
switch (type) {
case TYPE_PIO:
ret = ide_has_dma ? 4 : 0;
break;
case TYPE_SDMA:
ret = ide_has_dma ? 2 : -1;
break;
case TYPE_MDMA:
ret = ide_has_dma ? 2 : -1;
break;
case TYPE_UDMA:
ret = ide_has_dma ? 5 : -1;
break;
default:
ret = -1;
break;
}
return ret;
}
static int
scsi_disk_get_timings(UNUSED(const ide_t *ide), const int ide_has_dma, const int type)
{
int ret;
switch (type) {
case TIMINGS_DMA:
ret = ide_has_dma ? 120 : 0;
break;
case TIMINGS_PIO:
ret = ide_has_dma ? 120 : 0;
break;
case TIMINGS_PIO_FC:
ret = 0;
break;
default:
ret = 0;
break;
}
return ret;
}
/*
Fill in ide->buffer with the output of the "IDENTIFY PACKET DEVICE" command
*/
static void
scsi_disk_identify(const ide_t *ide, const int ide_has_dma)
{
const scsi_disk_t *dev = (scsi_disk_t *) ide->sc;
char device_identify[9] = { '8', '6', 'B', '_', 'H', 'D', '0', '0', 0 };
device_identify[7] = dev->id + 0x30;
scsi_disk_log(dev->log, "ATAPI Identify: %s\n", device_identify);
/* ATAPI device, direct-access device, non-removable media, accelerated DRQ */
ide->buffer[0] = 0x8000 | (0 << 8) | 0x00 | (2 << 5);
ide_padstr((char *) (ide->buffer + 10), "", 20); /* Serial Number */
ide_padstr((char *) (ide->buffer + 23), EMU_VERSION_EX, 8); /* Firmware */
ide_padstr((char *) (ide->buffer + 27), device_identify, 40); /* Model */
ide->buffer[49] = 0x200; /* LBA supported */
/* Interpret zero byte count limit as maximum length. */
ide->buffer[126] = 0xfffe;
if (ide_has_dma) {
ide->buffer[71] = 30;
ide->buffer[72] = 30;
ide->buffer[80] = 0x7e; /*ATA-1 to ATA-6 supported*/
ide->buffer[81] = 0x19; /*ATA-6 revision 3a supported*/
}
}
void
scsi_disk_hard_reset(void)
{
scsi_disk_t *dev;
for (uint8_t c = 0; c < HDD_NUM; c++) {
uint8_t valid = 0;
if (hdd[c].bus_type == HDD_BUS_SCSI) {
const uint8_t scsi_bus = (hdd[c].scsi_id >> 4) & 0x0f;
const uint8_t scsi_id = hdd[c].scsi_id & 0x0f;
/* Make sure to ignore any SCSI disk that has an out of range SCSI bus. */
if (scsi_bus >= SCSI_BUS_MAX)
continue;
/* Make sure to ignore any SCSI disk that has an out of range ID. */
if (scsi_id >= SCSI_ID_MAX)
continue;
/* Make sure to ignore any SCSI disk whose image file name is empty. */
if (strlen(hdd[c].fn) == 0)
continue;
/* Make sure to ignore any SCSI disk whose image fails to load. */
if (!hdd_image_load(c))
continue;
valid = 1;
hdd_preset_apply(c);
if (hdd[c].priv == NULL) {
hdd[c].priv = (scsi_disk_t *) calloc(1, sizeof(scsi_disk_t));
dev = (scsi_disk_t *) hdd[c].priv;
char n[1024] = { 0 };
sprintf(n, "HDD %i SCSI ", c + 1);
dev->log = log_open(n);
}
dev = (scsi_disk_t *) hdd[c].priv;
scsi_disk_log(dev->log, "SCSI disk hard_reset drive=%d\n", c);
if (dev->tf == NULL)
dev->tf = (ide_tf_t *) calloc(1, sizeof(ide_tf_t));
/* SCSI disk, attach to the SCSI bus. */
scsi_device_t *sd = &scsi_devices[scsi_bus][scsi_id];
sd->sc = (scsi_common_t *) dev;
sd->command = scsi_disk_command;
sd->request_sense = scsi_disk_request_sense_for_scsi;
sd->reset = scsi_disk_reset;
sd->phase_data_out = scsi_disk_phase_data_out;
sd->command_stop = scsi_disk_command_stop;
sd->type = SCSI_FIXED_DISK;
scsi_disk_log(dev->log, "SCSI disk %i attached to SCSI ID %i\n", c, hdd[c].scsi_id);
} else if (hdd[c].bus_type == HDD_BUS_ATAPI) {
/* Make sure to ignore any SCSI disk whose image file name is empty. */
if (strlen(hdd[c].fn) == 0)
continue;
/* Make sure to ignore any SCSI disk whose image fails to load. */
/* ATAPI hard disk, attach to the IDE bus. */
ide_t *id = ide_get_drive(hdd[c].ide_channel);
/*
If the IDE channel is initialized, we attach to it,
otherwise, we do nothing - it's going to be a drive
that's not attached to anything.
*/
if (id) {
if (!hdd_image_load(c))
continue;
valid = 1;
hdd_preset_apply(c);
if (hdd[c].priv == NULL)
hdd[c].priv = (scsi_disk_t *) calloc(1, sizeof(scsi_disk_t));
dev = (scsi_disk_t *) hdd[c].priv;
id->sc = (scsi_common_t *) dev;
dev->tf = id->tf;
IDE_ATAPI_IS_EARLY = 0;
id->get_max = scsi_disk_get_max;
id->get_timings = scsi_disk_get_timings;
id->identify = scsi_disk_identify;
id->stop = NULL;
id->packet_command = scsi_disk_command;
id->device_reset = scsi_disk_reset;
id->phase_data_out = scsi_disk_phase_data_out;
id->command_stop = scsi_disk_command_stop;
id->bus_master_error = scsi_disk_bus_master_error;
id->interrupt_drq = 0;
ide_atapi_attach(id);
scsi_disk_log(dev->log, "ATAPI hard disk drive %i attached to IDE channel %i\n",
c, hdd[c].ide_channel);
}
}
if (valid) {
dev = (scsi_disk_t *) hdd[c].priv;
dev->id = c;
dev->drv = &hdd[c];
dev->cur_lun = SCSI_LUN_USE_CDB;
scsi_disk_init(dev);
scsi_disk_mode_sense_load(dev);
}
}
}
void
scsi_disk_close(void)
{
for (uint8_t c = 0; c < HDD_NUM; c++) {
if ((hdd[c].bus_type == HDD_BUS_SCSI) || (hdd[c].bus_type == HDD_BUS_ATAPI)) {
if (hdd[c].bus_type == HDD_BUS_SCSI) {
const uint8_t scsi_bus = (hdd[c].scsi_id >> 4) & 0x0f;
const uint8_t scsi_id = hdd[c].scsi_id & 0x0f;
memset(&scsi_devices[scsi_bus][scsi_id], 0x00, sizeof(scsi_device_t));
}
hdd_image_close(c);
scsi_disk_t *dev = hdd[c].priv;
if (dev) {
if (dev->tf)
free(dev->tf);
if (dev->log != NULL) {
scsi_disk_log(dev->log, "Log closed\n");
log_close(dev->log);
dev->log = NULL;
}
free(dev);
hdd[c].priv = NULL;
}
}
}
}
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