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提交 66c6ef76 编写于 作者: B bellard
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better support of removable media 


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2123 c046a42c-6fe2-441c-8c8c-71466251a162
上级 ea185bbd
隐藏空白更改
内联 并排
Showing with 69 addition and 51 deletion
hw/ide.c
浏览文件 @ 66c6ef76
......@@ -943,26 +943,44 @@ static void cd_data_to_raw(uint8_t *buf, int lba)
memset(buf, 0, 288);
}
static void cd_read_sector(BlockDriverState *bs, int lba, uint8_t *buf,
static int cd_read_sector(BlockDriverState *bs, int lba, uint8_t *buf,
int sector_size)
{
int ret;
switch(sector_size) {
case 2048:
bdrv_read(bs, (int64_t)lba << 2, buf, 4);
ret = bdrv_read(bs, (int64_t)lba << 2, buf, 4);
break;
case 2352:
bdrv_read(bs, (int64_t)lba << 2, buf + 16, 4);
ret = bdrv_read(bs, (int64_t)lba << 2, buf + 16, 4);
if (ret < 0)
return ret;
cd_data_to_raw(buf, lba);
break;
default:
ret = -EIO;
break;
}
return ret;
}
static void ide_atapi_io_error(IDEState *s, int ret)
{
/* XXX: handle more errors */
if (ret == -ENOMEDIUM) {
ide_atapi_cmd_error(s, SENSE_NOT_READY,
ASC_MEDIUM_NOT_PRESENT);
} else {
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
ASC_LOGICAL_BLOCK_OOR);
}
}
/* The whole ATAPI transfer logic is handled in this function */
static void ide_atapi_cmd_reply_end(IDEState *s)
{
int byte_count_limit, size;
int byte_count_limit, size, ret;
#ifdef DEBUG_IDE_ATAPI
printf("reply: tx_size=%d elem_tx_size=%d index=%d\n",
s->packet_transfer_size,
......@@ -981,7 +999,12 @@ static void ide_atapi_cmd_reply_end(IDEState *s)
} else {
/* see if a new sector must be read */
if (s->lba != -1 && s->io_buffer_index >= s->cd_sector_size) {
cd_read_sector(s->bs, s->lba, s->io_buffer, s->cd_sector_size);
ret = cd_read_sector(s->bs, s->lba, s->io_buffer, s->cd_sector_size);
if (ret < 0) {
ide_transfer_stop(s);
ide_atapi_io_error(s, ret);
return;
}
s->lba++;
s->io_buffer_index = 0;
}
......@@ -1070,6 +1093,11 @@ static void ide_atapi_cmd_read_dma_cb(void *opaque, int ret)
IDEState *s = bm->ide_if;
int data_offset, n;
if (ret < 0) {
ide_atapi_io_error(s, ret);
goto eot;
}
if (s->io_buffer_size > 0) {
if (s->cd_sector_size == 2352) {
n = 1;
......@@ -1114,6 +1142,12 @@ static void ide_atapi_cmd_read_dma_cb(void *opaque, int ret)
bm->aiocb = bdrv_aio_read(s->bs, (int64_t)s->lba << 2,
s->io_buffer + data_offset, n * 4,
ide_atapi_cmd_read_dma_cb, bm);
if (!bm->aiocb) {
/* Note: media not present is the most likely case */
ide_atapi_cmd_error(s, SENSE_NOT_READY,
ASC_MEDIUM_NOT_PRESENT);
goto eot;
}
}
/* start a CD-CDROM read command with DMA */
......@@ -1270,11 +1304,6 @@ static void ide_atapi_cmd(IDEState *s)
{
int nb_sectors, lba;
if (!bdrv_is_inserted(s->bs)) {
ide_atapi_cmd_error(s, SENSE_NOT_READY,
ASC_MEDIUM_NOT_PRESENT);
break;
}
if (packet[0] == GPCMD_READ_10)
nb_sectors = ube16_to_cpu(packet + 7);
else
......@@ -1284,11 +1313,6 @@ static void ide_atapi_cmd(IDEState *s)
ide_atapi_cmd_ok(s);
break;
}
if (((int64_t)(lba + nb_sectors) << 2) > s->nb_sectors) {
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
ASC_LOGICAL_BLOCK_OOR);
break;
}
ide_atapi_cmd_read(s, lba, nb_sectors, 2048);
}
break;
......@@ -1296,22 +1320,12 @@ static void ide_atapi_cmd(IDEState *s)
{
int nb_sectors, lba, transfer_request;
if (!bdrv_is_inserted(s->bs)) {
ide_atapi_cmd_error(s, SENSE_NOT_READY,
ASC_MEDIUM_NOT_PRESENT);
break;
}
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;
}
if (((int64_t)(lba + nb_sectors) << 2) > s->nb_sectors) {
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
ASC_LOGICAL_BLOCK_OOR);
break;
}
transfer_request = packet[9];
switch(transfer_request & 0xf8) {
case 0x00:
......@@ -1336,13 +1350,17 @@ static void ide_atapi_cmd(IDEState *s)
case GPCMD_SEEK:
{
int lba;
if (!bdrv_is_inserted(s->bs)) {
int64_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 (((int64_t)lba << 2) > s->nb_sectors) {
if (lba >= total_sectors) {
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
ASC_LOGICAL_BLOCK_OOR);
break;
......@@ -1358,7 +1376,10 @@ static void ide_atapi_cmd(IDEState *s)
if (eject && !start) {
/* eject the disk */
bdrv_close(s->bs);
bdrv_eject(s->bs, 1);
} else if (eject && start) {
/* close the tray */
bdrv_eject(s->bs, 0);
}
ide_atapi_cmd_ok(s);
}
......@@ -1379,8 +1400,11 @@ static void ide_atapi_cmd(IDEState *s)
case GPCMD_READ_TOC_PMA_ATIP:
{
int format, msf, start_track, len;
int64_t total_sectors;
if (!bdrv_is_inserted(s->bs)) {
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;
......@@ -1391,7 +1415,7 @@ static void ide_atapi_cmd(IDEState *s)
start_track = packet[6];
switch(format) {
case 0:
len = cdrom_read_toc(s->nb_sectors >> 2, buf, msf, start_track);
len = cdrom_read_toc(total_sectors, buf, msf, start_track);
if (len < 0)
goto error_cmd;
ide_atapi_cmd_reply(s, len, max_len);
......@@ -1405,7 +1429,7 @@ static void ide_atapi_cmd(IDEState *s)
ide_atapi_cmd_reply(s, 12, max_len);
break;
case 2:
len = cdrom_read_toc_raw(s->nb_sectors >> 2, buf, msf, start_track);
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);
......@@ -1419,15 +1443,21 @@ static void ide_atapi_cmd(IDEState *s)
}
break;
case GPCMD_READ_CDVD_CAPACITY:
if (!bdrv_is_inserted(s->bs)) {
ide_atapi_cmd_error(s, SENSE_NOT_READY,
ASC_MEDIUM_NOT_PRESENT);
break;
{
int64_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);
}
/* NOTE: it is really the number of sectors minus 1 */
cpu_to_ube32(buf, (s->nb_sectors >> 2) - 1);
cpu_to_ube32(buf + 4, 2048);
ide_atapi_cmd_reply(s, 8, 8);
break;
case GPCMD_INQUIRY:
max_len = packet[4];
......@@ -1451,17 +1481,6 @@ static void ide_atapi_cmd(IDEState *s)
}
}
/* called when the inserted state of the media has changed */
static void cdrom_change_cb(void *opaque)
{
IDEState *s = opaque;
int64_t nb_sectors;
/* XXX: send interrupt too */
bdrv_get_geometry(s->bs, &nb_sectors);
s->nb_sectors = nb_sectors;
}
static void ide_cmd_lba48_transform(IDEState *s, int lba48)
{
s->lba48 = lba48;
......@@ -2092,7 +2111,6 @@ static void ide_init2(IDEState *ide_state,
}
if (bdrv_get_type_hint(s->bs) == BDRV_TYPE_CDROM) {
s->is_cdrom = 1;
bdrv_set_change_cb(s->bs, cdrom_change_cb, s);
}
}
s->drive_serial = drive_serial++;
......
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