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Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev

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* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  libata: Limit ATAPI DMA to R/W commands only for TORiSAN DVD drives (take 3)
  libata: Limit max sector to 128 for TORiSAN DVD drives (take 3)
  libata: Clear tf before doing request sense (take 3)
  libata: reorder HSM_ST_FIRST for easier decoding (take 3)
  libata bugfix: preserve LBA bit for HDIO_DRIVE_TASK
  2.6.21 fix lba48 bug in libata fill_result_tf()
This commit is contained in:
Linus Torvalds 2007-04-04 08:44:40 -07:00
commit bb4899dbef
5 changed files with 49 additions and 15 deletions
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33
drivers/ata/libata-core.c
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@ -1784,6 +1784,13 @@ int ata_dev_configure(struct ata_device *dev)
dev->max_sectors = ATA_MAX_SECTORS;
}
if (ata_device_blacklisted(dev) & ATA_HORKAGE_MAX_SEC_128)
dev->max_sectors = min(ATA_MAX_SECTORS_128, dev->max_sectors);
/* limit ATAPI DMA to R/W commands only */
if (ata_device_blacklisted(dev) & ATA_HORKAGE_DMA_RW_ONLY)
dev->horkage |= ATA_HORKAGE_DMA_RW_ONLY;
if (ap->ops->dev_config)
ap->ops->dev_config(ap, dev);
@ -3352,6 +3359,10 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
{ "_NEC DV5800A", NULL, ATA_HORKAGE_NODMA },
{ "SAMSUNG CD-ROM SN-124","N001", ATA_HORKAGE_NODMA },
/* Weird ATAPI devices */
{ "TORiSAN DVD-ROM DRD-N216", NULL, ATA_HORKAGE_MAX_SEC_128 |
ATA_HORKAGE_DMA_RW_ONLY },
/* Devices we expect to fail diagnostics */
/* Devices where NCQ should be avoided */
@ -3679,6 +3690,26 @@ int ata_check_atapi_dma(struct ata_queued_cmd *qc)
struct ata_port *ap = qc->ap;
int rc = 0; /* Assume ATAPI DMA is OK by default */
/* some drives can only do ATAPI DMA on read/write */
if (unlikely(qc->dev->horkage & ATA_HORKAGE_DMA_RW_ONLY)) {
struct scsi_cmnd *cmd = qc->scsicmd;
u8 *scsicmd = cmd->cmnd;
switch (scsicmd[0]) {
case READ_10:
case WRITE_10:
case READ_12:
case WRITE_12:
case READ_6:
case WRITE_6:
/* atapi dma maybe ok */
break;
default:
/* turn off atapi dma */
return 1;
}
}
if (ap->ops->check_atapi_dma)
rc = ap->ops->check_atapi_dma(qc);
@ -4722,8 +4753,8 @@ static void fill_result_tf(struct ata_queued_cmd *qc)
{
struct ata_port *ap = qc->ap;
ap->ops->tf_read(ap, &qc->result_tf);
qc->result_tf.flags = qc->tf.flags;
ap->ops->tf_read(ap, &qc->result_tf);
}
/**

22
drivers/ata/libata-eh.c
View File

@ -982,26 +982,27 @@ static int ata_eh_read_log_10h(struct ata_device *dev,
* RETURNS:
* 0 on success, AC_ERR_* mask on failure
*/
static unsigned int atapi_eh_request_sense(struct ata_device *dev,
unsigned char *sense_buf)
static unsigned int atapi_eh_request_sense(struct ata_queued_cmd *qc)
{
struct ata_device *dev = qc->dev;
unsigned char *sense_buf = qc->scsicmd->sense_buffer;
struct ata_port *ap = dev->ap;
struct ata_taskfile tf;
u8 cdb[ATAPI_CDB_LEN];
DPRINTK("ATAPI request sense\n");
ata_tf_init(dev, &tf);
/* FIXME: is this needed? */
memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
/* XXX: why tf_read here? */
ap->ops->tf_read(ap, &tf);
/* fill these in, for the case where they are -not- overwritten */
/* initialize sense_buf with the error register,
* for the case where they are -not- overwritten
*/
sense_buf[0] = 0x70;
sense_buf[2] = tf.feature >> 4;
sense_buf[2] = qc->result_tf.feature >> 4;
/* some devices time out if garbage left in tf */
ata_tf_init(dev, &tf);
memset(cdb, 0, ATAPI_CDB_LEN);
cdb[0] = REQUEST_SENSE;
@ -1165,8 +1166,7 @@ static unsigned int ata_eh_analyze_tf(struct ata_queued_cmd *qc,
case ATA_DEV_ATAPI:
if (!(qc->ap->pflags & ATA_PFLAG_FROZEN)) {
tmp = atapi_eh_request_sense(qc->dev,
qc->scsicmd->sense_buffer);
tmp = atapi_eh_request_sense(qc);
if (!tmp) {
/* ATA_QCFLAG_SENSE_VALID is used to
* tell atapi_qc_complete() that sense

2
drivers/ata/libata-scsi.c
View File

@ -333,7 +333,7 @@ int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg)
scsi_cmd[8] = args[3];
scsi_cmd[10] = args[4];
scsi_cmd[12] = args[5];
scsi_cmd[13] = args[6] & 0x0f;
scsi_cmd[13] = args[6] & 0x4f;
scsi_cmd[14] = args[0];
/* Good values for timeout and retries? Values below

1
include/linux/ata.h
View File

@ -40,6 +40,7 @@ enum {
ATA_MAX_DEVICES = 2, /* per bus/port */
ATA_MAX_PRD = 256, /* we could make these 256/256 */
ATA_SECT_SIZE = 512,
ATA_MAX_SECTORS_128 = 128,
ATA_MAX_SECTORS = 256,
ATA_MAX_SECTORS_LBA48 = 65535,/* TODO: 65536? */

6
include/linux/libata.h
View File

@ -311,15 +311,17 @@ enum {
ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */
ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */
ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */
ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */
ATA_HORKAGE_DMA_RW_ONLY = (1 << 4), /* ATAPI DMA for RW only */
};
enum hsm_task_states {
HSM_ST_IDLE, /* no command on going */
HSM_ST_FIRST, /* (waiting the device to)
write CDB or first data block */
HSM_ST, /* (waiting the device to) transfer data */
HSM_ST_LAST, /* (waiting the device to) complete command */
HSM_ST_ERR, /* error */
HSM_ST_FIRST, /* (waiting the device to)
write CDB or first data block */
};
enum ata_completion_errors {