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authorJeff Garzik <jgarzik@pobox.com>2005-11-18 11:42:40 -0500
committerJeff Garzik <jgarzik@pobox.com>2005-11-18 11:42:40 -0500
commit85a07029aaba8f5b27241bcff56cc009c9f4993b (patch)
treec579554c2ea9c942ccbea60e223bc62d8262f652 /drivers/scsi/libata-scsi.c
parent0da36b3467040908d3df6bc1f5b4d592a8b23b63 (diff)
parent79bfb0a98fdc73ed6a18469cef245cbf50a1d8bb (diff)
Merge branch 'upstream'
Diffstat (limited to 'drivers/scsi/libata-scsi.c')
-rw-r--r--drivers/scsi/libata-scsi.c83
1 files changed, 49 insertions, 34 deletions
diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c
index a1958bed390..957a9caee30 100644
--- a/drivers/scsi/libata-scsi.c
+++ b/drivers/scsi/libata-scsi.c
@@ -1949,22 +1949,44 @@ void ata_scsi_badcmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *), u8
done(cmd);
}
-void atapi_request_sense(struct ata_port *ap, struct ata_device *dev,
- struct scsi_cmnd *cmd)
+static int atapi_sense_complete(struct ata_queued_cmd *qc,unsigned int err_mask)
{
- DECLARE_COMPLETION(wait);
- struct ata_queued_cmd *qc;
- unsigned long flags;
- int rc;
+ if (err_mask && ((err_mask & AC_ERR_DEV) == 0))
+ /* FIXME: not quite right; we don't want the
+ * translation of taskfile registers into
+ * a sense descriptors, since that's only
+ * correct for ATA, not ATAPI
+ */
+ ata_gen_ata_desc_sense(qc);
- DPRINTK("ATAPI request sense\n");
+ qc->scsidone(qc->scsicmd);
+ return 0;
+}
- qc = ata_qc_new_init(ap, dev);
- BUG_ON(qc == NULL);
+/* is it pointless to prefer PIO for "safety reasons"? */
+static inline int ata_pio_use_silly(struct ata_port *ap)
+{
+ return (ap->flags & ATA_FLAG_PIO_DMA);
+}
+
+static void atapi_request_sense(struct ata_queued_cmd *qc)
+{
+ struct ata_port *ap = qc->ap;
+ struct scsi_cmnd *cmd = qc->scsicmd;
+
+ DPRINTK("ATAPI request sense\n");
/* FIXME: is this needed? */
memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer));
+ ap->ops->tf_read(ap, &qc->tf);
+
+ /* fill these in, for the case where they are -not- overwritten */
+ cmd->sense_buffer[0] = 0x70;
+ cmd->sense_buffer[2] = qc->tf.feature >> 4;
+
+ ata_qc_reinit(qc);
+
ata_sg_init_one(qc, cmd->sense_buffer, sizeof(cmd->sense_buffer));
qc->dma_dir = DMA_FROM_DEVICE;
@@ -1975,22 +1997,20 @@ void atapi_request_sense(struct ata_port *ap, struct ata_device *dev,
qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
qc->tf.command = ATA_CMD_PACKET;
- qc->tf.protocol = ATA_PROT_ATAPI;
- qc->tf.lbam = (8 * 1024) & 0xff;
- qc->tf.lbah = (8 * 1024) >> 8;
+ if (ata_pio_use_silly(ap)) {
+ qc->tf.protocol = ATA_PROT_ATAPI_DMA;
+ qc->tf.feature |= ATAPI_PKT_DMA;
+ } else {
+ qc->tf.protocol = ATA_PROT_ATAPI;
+ qc->tf.lbam = (8 * 1024) & 0xff;
+ qc->tf.lbah = (8 * 1024) >> 8;
+ }
qc->nbytes = SCSI_SENSE_BUFFERSIZE;
- qc->waiting = &wait;
- qc->complete_fn = ata_qc_complete_noop;
-
- spin_lock_irqsave(&ap->host_set->lock, flags);
- rc = ata_qc_issue(qc);
- spin_unlock_irqrestore(&ap->host_set->lock, flags);
+ qc->complete_fn = atapi_sense_complete;
- if (rc)
- ata_port_disable(ap);
- else
- wait_for_completion(&wait);
+ if (ata_qc_issue(qc))
+ ata_qc_complete(qc, AC_ERR_OTHER);
DPRINTK("EXIT\n");
}
@@ -2002,19 +2022,8 @@ static int atapi_qc_complete(struct ata_queued_cmd *qc, unsigned int err_mask)
VPRINTK("ENTER, err_mask 0x%X\n", err_mask);
if (unlikely(err_mask & AC_ERR_DEV)) {
- DPRINTK("request check condition\n");
-
- /* FIXME: command completion with check condition
- * but no sense causes the error handler to run,
- * which then issues REQUEST SENSE, fills in the sense
- * buffer, and completes the command (for the second
- * time). We need to issue REQUEST SENSE some other
- * way, to avoid completing the command twice.
- */
cmd->result = SAM_STAT_CHECK_CONDITION;
-
- qc->scsidone(cmd);
-
+ atapi_request_sense(qc);
return 1;
}
@@ -2270,6 +2279,12 @@ ata_scsi_pass_thru(struct ata_queued_cmd *qc, const u8 *scsicmd)
tf->device = scsicmd[8];
tf->command = scsicmd[9];
}
+ /*
+ * If slave is possible, enforce correct master/slave bit
+ */
+ if (qc->ap->flags & ATA_FLAG_SLAVE_POSS)
+ tf->device = qc->dev->devno ?
+ tf->device | ATA_DEV1 : tf->device & ~ATA_DEV1;
/*
* Filter SET_FEATURES - XFER MODE command -- otherwise,