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ide/atapi: Factor commands out

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In preparation for a table of function pointers, factor each command out from
ide_atapi_cmd() into its own function.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2011-04-18 17:55:08 +02:00
parent 33231e0e22
commit a60cf7e7eb
1 changed files with 459 additions and 378 deletions
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837
hw/ide/atapi.c
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@ -621,11 +621,453 @@ static void handle_get_event_status_notification(IDEState *s,
ide_atapi_cmd_reply(s, used_len, max_len);
}
static void cmd_request_sense(IDEState *s, uint8_t *buf)
{
int max_len = buf[4];
memset(buf, 0, 18);
buf[0] = 0x70 | (1 << 7);
buf[2] = s->sense_key;
buf[7] = 10;
buf[12] = s->asc;
if (s->sense_key == SENSE_UNIT_ATTENTION) {
s->sense_key = SENSE_NONE;
}
ide_atapi_cmd_reply(s, 18, max_len);
}
static void cmd_inquiry(IDEState *s, uint8_t *buf)
{
int max_len = buf[4];
buf[0] = 0x05; /* CD-ROM */
buf[1] = 0x80; /* removable */
buf[2] = 0x00; /* ISO */
buf[3] = 0x21; /* ATAPI-2 (XXX: put ATAPI-4 ?) */
buf[4] = 31; /* additional length */
buf[5] = 0; /* reserved */
buf[6] = 0; /* reserved */
buf[7] = 0; /* reserved */
padstr8(buf + 8, 8, "QEMU");
padstr8(buf + 16, 16, "QEMU DVD-ROM");
padstr8(buf + 32, 4, s->version);
ide_atapi_cmd_reply(s, 36, max_len);
}
static void cmd_get_configuration(IDEState *s, uint8_t *buf)
{
uint32_t len;
uint8_t index = 0;
int max_len;
/* only feature 0 is supported */
if (buf[2] != 0 || buf[3] != 0) {
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
ASC_INV_FIELD_IN_CMD_PACKET);
return;
}
/* XXX: could result in alignment problems in some architectures */
max_len = ube16_to_cpu(buf + 7);
/*
* XXX: avoid overflow for io_buffer if max_len is bigger than
* the size of that buffer (dimensioned to max number of
* sectors to transfer at once)
*
* Only a problem if the feature/profiles grow.
*/
if (max_len > 512) {
/* XXX: assume 1 sector */
max_len = 512;
}
memset(buf, 0, max_len);
/*
* the number of sectors from the media tells us which profile
* to use as current. 0 means there is no media
*/
if (media_is_dvd(s)) {
cpu_to_ube16(buf + 6, MMC_PROFILE_DVD_ROM);
} else if (media_is_cd(s)) {
cpu_to_ube16(buf + 6, MMC_PROFILE_CD_ROM);
}
buf[10] = 0x02 | 0x01; /* persistent and current */
len = 12; /* headers: 8 + 4 */
len += ide_atapi_set_profile(buf, &index, MMC_PROFILE_DVD_ROM);
len += ide_atapi_set_profile(buf, &index, MMC_PROFILE_CD_ROM);
cpu_to_ube32(buf, len - 4); /* data length */
ide_atapi_cmd_reply(s, len, max_len);
}
static void cmd_mode_sense(IDEState *s, uint8_t *buf)
{
int action, code;
int max_len;
if (buf[0] == GPCMD_MODE_SENSE_10) {
max_len = ube16_to_cpu(buf + 7);
} else {
max_len = buf[4];
}
action = buf[2] >> 6;
code = buf[2] & 0x3f;
switch(action) {
case 0: /* current values */
switch(code) {
case GPMODE_R_W_ERROR_PAGE: /* error recovery */
cpu_to_ube16(&buf[0], 16 + 6);
buf[2] = 0x70;
buf[3] = 0;
buf[4] = 0;
buf[5] = 0;
buf[6] = 0;
buf[7] = 0;
buf[8] = 0x01;
buf[9] = 0x06;
buf[10] = 0x00;
buf[11] = 0x05;
buf[12] = 0x00;
buf[13] = 0x00;
buf[14] = 0x00;
buf[15] = 0x00;
ide_atapi_cmd_reply(s, 16, max_len);
break;
case GPMODE_AUDIO_CTL_PAGE:
cpu_to_ube16(&buf[0], 24 + 6);
buf[2] = 0x70;
buf[3] = 0;
buf[4] = 0;
buf[5] = 0;
buf[6] = 0;
buf[7] = 0;
/* Fill with CDROM audio volume */
buf[17] = 0;
buf[19] = 0;
buf[21] = 0;
buf[23] = 0;
ide_atapi_cmd_reply(s, 24, max_len);
break;
case GPMODE_CAPABILITIES_PAGE:
cpu_to_ube16(&buf[0], 28 + 6);
buf[2] = 0x70;
buf[3] = 0;
buf[4] = 0;
buf[5] = 0;
buf[6] = 0;
buf[7] = 0;
buf[8] = 0x2a;
buf[9] = 0x12;
buf[10] = 0x00;
buf[11] = 0x00;
/* Claim PLAY_AUDIO capability (0x01) since some Linux
code checks for this to automount media. */
buf[12] = 0x71;
buf[13] = 3 << 5;
buf[14] = (1 << 0) | (1 << 3) | (1 << 5);
if (bdrv_is_locked(s->bs))
buf[6] |= 1 << 1;
buf[15] = 0x00;
cpu_to_ube16(&buf[16], 706);
buf[18] = 0;
buf[19] = 2;
cpu_to_ube16(&buf[20], 512);
cpu_to_ube16(&buf[22], 706);
buf[24] = 0;
buf[25] = 0;
buf[26] = 0;
buf[27] = 0;
ide_atapi_cmd_reply(s, 28, max_len);
break;
default:
goto error_cmd;
}
break;
case 1: /* changeable values */
goto error_cmd;
case 2: /* default values */
goto error_cmd;
default:
case 3: /* saved values */
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
ASC_SAVING_PARAMETERS_NOT_SUPPORTED);
break;
}
return;
error_cmd:
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST, ASC_INV_FIELD_IN_CMD_PACKET);
}
static void cmd_test_unit_ready(IDEState *s, uint8_t *buf)
{
if (bdrv_is_inserted(s->bs)) {
ide_atapi_cmd_ok(s);
} else {
ide_atapi_cmd_error(s, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
}
}
static void cmd_prevent_allow_medium_removal(IDEState *s, uint8_t* buf)
{
bdrv_set_locked(s->bs, buf[4] & 1);
ide_atapi_cmd_ok(s);
}
static void cmd_read(IDEState *s, uint8_t* buf)
{
int nb_sectors, lba;
if (buf[0] == GPCMD_READ_10) {
nb_sectors = ube16_to_cpu(buf + 7);
} else {
nb_sectors = ube32_to_cpu(buf + 6);
}
lba = ube32_to_cpu(buf + 2);
if (nb_sectors == 0) {
ide_atapi_cmd_ok(s);
return;
}
ide_atapi_cmd_read(s, lba, nb_sectors, 2048);
}
static void cmd_read_cd(IDEState *s, uint8_t* buf)
{
int nb_sectors, lba, transfer_request;
nb_sectors = (buf[6] << 16) | (buf[7] << 8) | buf[8];
lba = ube32_to_cpu(buf + 2);
if (nb_sectors == 0) {
ide_atapi_cmd_ok(s);
return;
}
transfer_request = buf[9];
switch(transfer_request & 0xf8) {
case 0x00:
/* nothing */
ide_atapi_cmd_ok(s);
break;
case 0x10:
/* normal read */
ide_atapi_cmd_read(s, lba, nb_sectors, 2048);
break;
case 0xf8:
/* read all data */
ide_atapi_cmd_read(s, lba, nb_sectors, 2352);
break;
default:
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
ASC_INV_FIELD_IN_CMD_PACKET);
break;
}
}
static void cmd_seek(IDEState *s, uint8_t* buf)
{
unsigned int lba;
uint64_t total_sectors;
bdrv_get_geometry(s->bs, &total_sectors);
total_sectors >>= 2;
if (total_sectors == 0) {
ide_atapi_cmd_error(s, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
return;
}
lba = ube32_to_cpu(buf + 2);
if (lba >= total_sectors) {
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST, ASC_LOGICAL_BLOCK_OOR);
return;
}
ide_atapi_cmd_ok(s);
}
static void cmd_start_stop_unit(IDEState *s, uint8_t* buf)
{
int start, eject, sense, err = 0;
start = buf[4] & 1;
eject = (buf[4] >> 1) & 1;
if (eject) {
err = bdrv_eject(s->bs, !start);
}
switch (err) {
case 0:
ide_atapi_cmd_ok(s);
break;
case -EBUSY:
sense = SENSE_NOT_READY;
if (bdrv_is_inserted(s->bs)) {
sense = SENSE_ILLEGAL_REQUEST;
}
ide_atapi_cmd_error(s, sense, ASC_MEDIA_REMOVAL_PREVENTED);
break;
default:
ide_atapi_cmd_error(s, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
break;
}
}
static void cmd_mechanism_status(IDEState *s, uint8_t* buf)
{
int max_len = ube16_to_cpu(buf + 8);
cpu_to_ube16(buf, 0);
/* no current LBA */
buf[2] = 0;
buf[3] = 0;
buf[4] = 0;
buf[5] = 1;
cpu_to_ube16(buf + 6, 0);
ide_atapi_cmd_reply(s, 8, max_len);
}
static void cmd_read_toc_pma_atip(IDEState *s, uint8_t* buf)
{
int format, msf, start_track, len;
uint64_t total_sectors;
int max_len;
bdrv_get_geometry(s->bs, &total_sectors);
total_sectors >>= 2;
if (total_sectors == 0) {
ide_atapi_cmd_error(s, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
return;
}
max_len = ube16_to_cpu(buf + 7);
format = buf[9] >> 6;
msf = (buf[1] >> 1) & 1;
start_track = buf[6];
switch(format) {
case 0:
len = cdrom_read_toc(total_sectors, buf, msf, start_track);
if (len < 0)
goto error_cmd;
ide_atapi_cmd_reply(s, len, max_len);
break;
case 1:
/* multi session : only a single session defined */
memset(buf, 0, 12);
buf[1] = 0x0a;
buf[2] = 0x01;
buf[3] = 0x01;
ide_atapi_cmd_reply(s, 12, max_len);
break;
case 2:
len = cdrom_read_toc_raw(total_sectors, buf, msf, start_track);
if (len < 0)
goto error_cmd;
ide_atapi_cmd_reply(s, len, max_len);
break;
default:
error_cmd:
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
ASC_INV_FIELD_IN_CMD_PACKET);
}
}
static void cmd_read_cdvd_capacity(IDEState *s, uint8_t* buf)
{
uint64_t total_sectors;
bdrv_get_geometry(s->bs, &total_sectors);
total_sectors >>= 2;
if (total_sectors == 0) {
ide_atapi_cmd_error(s, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
return;
}
/* NOTE: it is really the number of sectors minus 1 */
cpu_to_ube32(buf, total_sectors - 1);
cpu_to_ube32(buf + 4, 2048);
ide_atapi_cmd_reply(s, 8, 8);
}
static void cmd_read_dvd_structure(IDEState *s, uint8_t* buf)
{
int max_len;
int media = buf[1];
int format = buf[7];
int ret;
max_len = ube16_to_cpu(buf + 8);
if (format < 0xff) {
if (media_is_cd(s)) {
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
ASC_INCOMPATIBLE_FORMAT);
return;
} else if (!media_present(s)) {
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
ASC_INV_FIELD_IN_CMD_PACKET);
return;
}
}
memset(buf, 0, max_len > IDE_DMA_BUF_SECTORS * 512 + 4 ?
IDE_DMA_BUF_SECTORS * 512 + 4 : max_len);
switch (format) {
case 0x00 ... 0x7f:
case 0xff:
if (media == 0) {
ret = ide_dvd_read_structure(s, format, buf, buf);
if (ret < 0) {
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST, -ret);
} else {
ide_atapi_cmd_reply(s, ret, max_len);
}
break;
}
/* TODO: BD support, fall through for now */
/* Generic disk structures */
case 0x80: /* TODO: AACS volume identifier */
case 0x81: /* TODO: AACS media serial number */
case 0x82: /* TODO: AACS media identifier */
case 0x83: /* TODO: AACS media key block */
case 0x90: /* TODO: List of recognized format layers */
case 0xc0: /* TODO: Write protection status */
default:
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
ASC_INV_FIELD_IN_CMD_PACKET);
break;
}
}
static void cmd_set_speed(IDEState *s, uint8_t* buf)
{
ide_atapi_cmd_ok(s);
}
void ide_atapi_cmd(IDEState *s)
{
const uint8_t *packet;
uint8_t *buf;
int max_len;
packet = s->io_buffer;
buf = s->io_buffer;
@ -665,413 +1107,52 @@ void ide_atapi_cmd(IDEState *s)
}
switch(s->io_buffer[0]) {
case GPCMD_TEST_UNIT_READY:
if (bdrv_is_inserted(s->bs)) {
ide_atapi_cmd_ok(s);
} else {
ide_atapi_cmd_error(s, SENSE_NOT_READY,
ASC_MEDIUM_NOT_PRESENT);
}
cmd_test_unit_ready(s, buf);
break;
case GPCMD_MODE_SENSE_6:
case GPCMD_MODE_SENSE_10:
{
int action, code;
if (packet[0] == GPCMD_MODE_SENSE_10)
max_len = ube16_to_cpu(packet + 7);
else
max_len = packet[4];
action = packet[2] >> 6;
code = packet[2] & 0x3f;
switch(action) {
case 0: /* current values */
switch(code) {
case GPMODE_R_W_ERROR_PAGE: /* error recovery */
cpu_to_ube16(&buf[0], 16 + 6);
buf[2] = 0x70;
buf[3] = 0;
buf[4] = 0;
buf[5] = 0;
buf[6] = 0;
buf[7] = 0;
buf[8] = 0x01;
buf[9] = 0x06;
buf[10] = 0x00;
buf[11] = 0x05;
buf[12] = 0x00;
buf[13] = 0x00;
buf[14] = 0x00;
buf[15] = 0x00;
ide_atapi_cmd_reply(s, 16, max_len);
break;
case GPMODE_AUDIO_CTL_PAGE:
cpu_to_ube16(&buf[0], 24 + 6);
buf[2] = 0x70;
buf[3] = 0;
buf[4] = 0;
buf[5] = 0;
buf[6] = 0;
buf[7] = 0;
/* Fill with CDROM audio volume */
buf[17] = 0;
buf[19] = 0;
buf[21] = 0;
buf[23] = 0;
ide_atapi_cmd_reply(s, 24, max_len);
break;
case GPMODE_CAPABILITIES_PAGE:
cpu_to_ube16(&buf[0], 28 + 6);
buf[2] = 0x70;
buf[3] = 0;
buf[4] = 0;
buf[5] = 0;
buf[6] = 0;
buf[7] = 0;
buf[8] = 0x2a;
buf[9] = 0x12;
buf[10] = 0x00;
buf[11] = 0x00;
/* Claim PLAY_AUDIO capability (0x01) since some Linux
code checks for this to automount media. */
buf[12] = 0x71;
buf[13] = 3 << 5;
buf[14] = (1 << 0) | (1 << 3) | (1 << 5);
if (bdrv_is_locked(s->bs))
buf[6] |= 1 << 1;
buf[15] = 0x00;
cpu_to_ube16(&buf[16], 706);
buf[18] = 0;
buf[19] = 2;
cpu_to_ube16(&buf[20], 512);
cpu_to_ube16(&buf[22], 706);
buf[24] = 0;
buf[25] = 0;
buf[26] = 0;
buf[27] = 0;
ide_atapi_cmd_reply(s, 28, max_len);
break;
default:
goto error_cmd;
}
break;
case 1: /* changeable values */
goto error_cmd;
case 2: /* default values */
goto error_cmd;
default:
case 3: /* saved values */
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
ASC_SAVING_PARAMETERS_NOT_SUPPORTED);
break;
}
}
cmd_mode_sense(s, buf);
break;
case GPCMD_REQUEST_SENSE:
max_len = packet[4];
memset(buf, 0, 18);
buf[0] = 0x70 | (1 << 7);
buf[2] = s->sense_key;
buf[7] = 10;
buf[12] = s->asc;
if (s->sense_key == SENSE_UNIT_ATTENTION)
s->sense_key = SENSE_NONE;
ide_atapi_cmd_reply(s, 18, max_len);
cmd_request_sense(s, buf);
break;
case GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL:
bdrv_set_locked(s->bs, packet[4] & 1);
ide_atapi_cmd_ok(s);
cmd_prevent_allow_medium_removal(s, buf);
break;
case GPCMD_READ_10:
case GPCMD_READ_12:
{
int nb_sectors, lba;
if (packet[0] == GPCMD_READ_10)
nb_sectors = ube16_to_cpu(packet + 7);
else
nb_sectors = ube32_to_cpu(packet + 6);
lba = ube32_to_cpu(packet + 2);
if (nb_sectors == 0) {
ide_atapi_cmd_ok(s);
break;
}
ide_atapi_cmd_read(s, lba, nb_sectors, 2048);
}
cmd_read(s, buf);
break;
case GPCMD_READ_CD:
{
int nb_sectors, lba, transfer_request;
nb_sectors = (packet[6] << 16) | (packet[7] << 8) | packet[8];
lba = ube32_to_cpu(packet + 2);
if (nb_sectors == 0) {
ide_atapi_cmd_ok(s);
break;
}
transfer_request = packet[9];
switch(transfer_request & 0xf8) {
case 0x00:
/* nothing */
ide_atapi_cmd_ok(s);
break;
case 0x10:
/* normal read */
ide_atapi_cmd_read(s, lba, nb_sectors, 2048);
break;
case 0xf8:
/* read all data */
ide_atapi_cmd_read(s, lba, nb_sectors, 2352);
break;
default:
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
ASC_INV_FIELD_IN_CMD_PACKET);
break;
}
}
cmd_read_cd(s, buf);
break;
case GPCMD_SEEK:
{
unsigned int lba;
uint64_t total_sectors;
bdrv_get_geometry(s->bs, &total_sectors);
total_sectors >>= 2;
if (total_sectors == 0) {
ide_atapi_cmd_error(s, SENSE_NOT_READY,
ASC_MEDIUM_NOT_PRESENT);
break;
}
lba = ube32_to_cpu(packet + 2);
if (lba >= total_sectors) {
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
ASC_LOGICAL_BLOCK_OOR);
break;
}
ide_atapi_cmd_ok(s);
}
cmd_seek(s, buf);
break;
case GPCMD_START_STOP_UNIT:
{
int start, eject, sense, err = 0;
start = packet[4] & 1;
eject = (packet[4] >> 1) & 1;
if (eject) {
err = bdrv_eject(s->bs, !start);
}
switch (err) {
case 0:
ide_atapi_cmd_ok(s);
break;
case -EBUSY:
sense = SENSE_NOT_READY;
if (bdrv_is_inserted(s->bs)) {
sense = SENSE_ILLEGAL_REQUEST;
}
ide_atapi_cmd_error(s, sense,
ASC_MEDIA_REMOVAL_PREVENTED);
break;
default:
ide_atapi_cmd_error(s, SENSE_NOT_READY,
ASC_MEDIUM_NOT_PRESENT);
break;
}
}
cmd_start_stop_unit(s, buf);
break;
case GPCMD_MECHANISM_STATUS:
{
max_len = ube16_to_cpu(packet + 8);
cpu_to_ube16(buf, 0);
/* no current LBA */
buf[2] = 0;
buf[3] = 0;
buf[4] = 0;
buf[5] = 1;
cpu_to_ube16(buf + 6, 0);
ide_atapi_cmd_reply(s, 8, max_len);
}
cmd_mechanism_status(s, buf);
break;
case GPCMD_READ_TOC_PMA_ATIP:
{
int format, msf, start_track, len;
uint64_t total_sectors;
bdrv_get_geometry(s->bs, &total_sectors);
total_sectors >>= 2;
if (total_sectors == 0) {
ide_atapi_cmd_error(s, SENSE_NOT_READY,
ASC_MEDIUM_NOT_PRESENT);
break;
}
max_len = ube16_to_cpu(packet + 7);
format = packet[9] >> 6;
msf = (packet[1] >> 1) & 1;
start_track = packet[6];
switch(format) {
case 0:
len = cdrom_read_toc(total_sectors, buf, msf, start_track);
if (len < 0)
goto error_cmd;
ide_atapi_cmd_reply(s, len, max_len);
break;
case 1:
/* multi session : only a single session defined */
memset(buf, 0, 12);
buf[1] = 0x0a;
buf[2] = 0x01;
buf[3] = 0x01;
ide_atapi_cmd_reply(s, 12, max_len);
break;
case 2:
len = cdrom_read_toc_raw(total_sectors, buf, msf, start_track);
if (len < 0)
goto error_cmd;
ide_atapi_cmd_reply(s, len, max_len);
break;
default:
error_cmd:
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
ASC_INV_FIELD_IN_CMD_PACKET);
break;
}
}
cmd_read_toc_pma_atip(s, buf);
break;
case GPCMD_READ_CDVD_CAPACITY:
{
uint64_t total_sectors;
bdrv_get_geometry(s->bs, &total_sectors);
total_sectors >>= 2;
if (total_sectors == 0) {
ide_atapi_cmd_error(s, SENSE_NOT_READY,
ASC_MEDIUM_NOT_PRESENT);
break;
}
/* NOTE: it is really the number of sectors minus 1 */
cpu_to_ube32(buf, total_sectors - 1);
cpu_to_ube32(buf + 4, 2048);
ide_atapi_cmd_reply(s, 8, 8);
}
cmd_read_cdvd_capacity(s, buf);
break;
case GPCMD_READ_DVD_STRUCTURE:
{
int media = packet[1];
int format = packet[7];
int ret;
max_len = ube16_to_cpu(packet + 8);
if (format < 0xff) {
if (media_is_cd(s)) {
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
ASC_INCOMPATIBLE_FORMAT);
break;
} else if (!media_present(s)) {
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
ASC_INV_FIELD_IN_CMD_PACKET);
break;
}
}
memset(buf, 0, max_len > IDE_DMA_BUF_SECTORS * 512 + 4 ?
IDE_DMA_BUF_SECTORS * 512 + 4 : max_len);
switch (format) {
case 0x00 ... 0x7f:
case 0xff:
if (media == 0) {
ret = ide_dvd_read_structure(s, format, packet, buf);
if (ret < 0)
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST, -ret);
else
ide_atapi_cmd_reply(s, ret, max_len);
break;
}
/* TODO: BD support, fall through for now */
/* Generic disk structures */
case 0x80: /* TODO: AACS volume identifier */
case 0x81: /* TODO: AACS media serial number */
case 0x82: /* TODO: AACS media identifier */
case 0x83: /* TODO: AACS media key block */
case 0x90: /* TODO: List of recognized format layers */
case 0xc0: /* TODO: Write protection status */
default:
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
ASC_INV_FIELD_IN_CMD_PACKET);
break;
}
}
cmd_read_dvd_structure(s, buf);
break;
case GPCMD_SET_SPEED:
ide_atapi_cmd_ok(s);
cmd_set_speed(s, buf);
break;
case GPCMD_INQUIRY:
max_len = packet[4];
buf[0] = 0x05; /* CD-ROM */
buf[1] = 0x80; /* removable */
buf[2] = 0x00; /* ISO */
buf[3] = 0x21; /* ATAPI-2 (XXX: put ATAPI-4 ?) */
buf[4] = 31; /* additional length */
buf[5] = 0; /* reserved */
buf[6] = 0; /* reserved */
buf[7] = 0; /* reserved */
padstr8(buf + 8, 8, "QEMU");
padstr8(buf + 16, 16, "QEMU DVD-ROM");
padstr8(buf + 32, 4, s->version);
ide_atapi_cmd_reply(s, 36, max_len);
cmd_inquiry(s, buf);
break;
case GPCMD_GET_CONFIGURATION:
{
uint32_t len;
uint8_t index = 0;
/* only feature 0 is supported */
if (packet[2] != 0 || packet[3] != 0) {
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
ASC_INV_FIELD_IN_CMD_PACKET);
break;
}
/* XXX: could result in alignment problems in some architectures */
max_len = ube16_to_cpu(packet + 7);
/*
* XXX: avoid overflow for io_buffer if max_len is bigger than
* the size of that buffer (dimensioned to max number of
* sectors to transfer at once)
*
* Only a problem if the feature/profiles grow.
*/
if (max_len > 512) /* XXX: assume 1 sector */
max_len = 512;
memset(buf, 0, max_len);
/*
* the number of sectors from the media tells us which profile
* to use as current. 0 means there is no media
*/
if (media_is_dvd(s))
cpu_to_ube16(buf + 6, MMC_PROFILE_DVD_ROM);
else if (media_is_cd(s))
cpu_to_ube16(buf + 6, MMC_PROFILE_CD_ROM);
buf[10] = 0x02 | 0x01; /* persistent and current */
len = 12; /* headers: 8 + 4 */
len += ide_atapi_set_profile(buf, &index, MMC_PROFILE_DVD_ROM);
len += ide_atapi_set_profile(buf, &index, MMC_PROFILE_CD_ROM);
cpu_to_ube32(buf, len - 4); /* data length */
ide_atapi_cmd_reply(s, len, max_len);
break;
}
cmd_get_configuration(s, buf);
break;
case GPCMD_GET_EVENT_STATUS_NOTIFICATION:
handle_get_event_status_notification(s, buf, packet);
break;