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path: root/drivers/scsi/libata-scsi.c
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Diffstat (limited to 'drivers/scsi/libata-scsi.c')
-rw-r--r--drivers/scsi/libata-scsi.c146
1 files changed, 75 insertions, 71 deletions
diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c
index bb30fcd..2282c04 100644
--- a/drivers/scsi/libata-scsi.c
+++ b/drivers/scsi/libata-scsi.c
@@ -38,6 +38,7 @@
#include <linux/spinlock.h>
#include <scsi/scsi.h>
#include <scsi/scsi_host.h>
+#include <scsi/scsi_eh.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_request.h>
#include <linux/libata.h>
@@ -147,7 +148,8 @@ int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg)
u8 scsi_cmd[MAX_COMMAND_SIZE];
u8 args[4], *argbuf = NULL;
int argsize = 0;
- struct scsi_request *sreq;
+ struct scsi_sense_hdr sshdr;
+ enum dma_data_direction data_dir;
if (NULL == (void *)arg)
return -EINVAL;
@@ -155,10 +157,6 @@ int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg)
if (copy_from_user(args, arg, sizeof(args)))
return -EFAULT;
- sreq = scsi_allocate_request(scsidev, GFP_KERNEL);
- if (!sreq)
- return -EINTR;
-
memset(scsi_cmd, 0, sizeof(scsi_cmd));
if (args[3]) {
@@ -172,11 +170,11 @@ int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg)
scsi_cmd[1] = (4 << 1); /* PIO Data-in */
scsi_cmd[2] = 0x0e; /* no off.line or cc, read from dev,
block count in sector count field */
- sreq->sr_data_direction = DMA_FROM_DEVICE;
+ data_dir = DMA_FROM_DEVICE;
} else {
scsi_cmd[1] = (3 << 1); /* Non-data */
/* scsi_cmd[2] is already 0 -- no off.line, cc, or data xfer */
- sreq->sr_data_direction = DMA_NONE;
+ data_dir = DMA_NONE;
}
scsi_cmd[0] = ATA_16;
@@ -194,9 +192,8 @@ int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg)
/* Good values for timeout and retries? Values below
from scsi_ioctl_send_command() for default case... */
- scsi_wait_req(sreq, scsi_cmd, argbuf, argsize, (10*HZ), 5);
-
- if (sreq->sr_result) {
+ if (scsi_execute_req(scsidev, scsi_cmd, data_dir, argbuf, argsize,
+ &sshdr, (10*HZ), 5)) {
rc = -EIO;
goto error;
}
@@ -207,8 +204,6 @@ int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg)
&& copy_to_user((void *)(arg + sizeof(args)), argbuf, argsize))
rc = -EFAULT;
error:
- scsi_release_request(sreq);
-
if (argbuf)
kfree(argbuf);
@@ -231,7 +226,7 @@ int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg)
int rc = 0;
u8 scsi_cmd[MAX_COMMAND_SIZE];
u8 args[7];
- struct scsi_request *sreq;
+ struct scsi_sense_hdr sshdr;
if (NULL == (void *)arg)
return -EINVAL;
@@ -250,26 +245,13 @@ int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg)
scsi_cmd[12] = args[5];
scsi_cmd[14] = args[0];
- sreq = scsi_allocate_request(scsidev, GFP_KERNEL);
- if (!sreq) {
- rc = -EINTR;
- goto error;
- }
-
- sreq->sr_data_direction = DMA_NONE;
/* Good values for timeout and retries? Values below
- from scsi_ioctl_send_command() for default case... */
- scsi_wait_req(sreq, scsi_cmd, NULL, 0, (10*HZ), 5);
-
- if (sreq->sr_result) {
+ from scsi_ioctl_send_command() for default case... */
+ if (scsi_execute_req(scsidev, scsi_cmd, DMA_NONE, NULL, 0, &sshdr,
+ (10*HZ), 5))
rc = -EIO;
- goto error;
- }
/* Need code to retrieve data from check condition? */
-
-error:
- scsi_release_request(sreq);
return rc;
}
@@ -1129,6 +1111,8 @@ static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc, const u8 *scsicm
* length 0 means transfer 0 block of data.
* However, for ATA R/W commands, sector count 0 means
* 256 or 65536 sectors, not 0 sectors as in SCSI.
+ *
+ * WARNING: one or two older ATA drives treat 0 as 0...
*/
goto nothing_to_do;
@@ -1971,22 +1955,44 @@ 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;
@@ -1997,22 +2003,20 @@ 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");
}
@@ -2024,19 +2028,8 @@ 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;
}
@@ -2051,7 +2044,7 @@ static int atapi_qc_complete(struct ata_queued_cmd *qc, unsigned int err_mask)
else {
u8 *scsicmd = cmd->cmnd;
- if (scsicmd[0] == INQUIRY) {
+ if ((scsicmd[0] == INQUIRY) && ((scsicmd[1] & 0x03) == 0)) {
u8 *buf = NULL;
unsigned int buflen;
@@ -2065,9 +2058,6 @@ static int atapi_qc_complete(struct ata_queued_cmd *qc, unsigned int err_mask)
* device. 2) Ensure response data format / ATAPI information
* are always correct.
*/
- /* FIXME: do we ever override EVPD pages and the like, with
- * this code?
- */
if (buf[2] == 0) {
buf[2] = 0x5;
buf[3] = 0x32;
@@ -2180,9 +2170,12 @@ ata_scsi_find_dev(struct ata_port *ap, const struct scsi_device *scsidev)
if (unlikely(!ata_dev_present(dev)))
return NULL;
- if (!atapi_enabled) {
- if (unlikely(dev->class == ATA_DEV_ATAPI))
+ if (!atapi_enabled || (ap->flags & ATA_FLAG_NO_ATAPI)) {
+ if (unlikely(dev->class == ATA_DEV_ATAPI)) {
+ printk(KERN_WARNING "ata%u(%u): WARNING: ATAPI is %s, device ignored.\n",
+ ap->id, dev->devno, atapi_enabled ? "not supported with this driver" : "disabled");
return NULL;
+ }
}
return dev;
@@ -2246,7 +2239,7 @@ ata_scsi_pass_thru(struct ata_queued_cmd *qc, const u8 *scsicmd)
struct scsi_cmnd *cmd = qc->scsicmd;
if ((tf->protocol = ata_scsi_map_proto(scsicmd[1])) == ATA_PROT_UNKNOWN)
- return 1;
+ goto invalid_fld;
/*
* 12 and 16 byte CDBs use different offsets to
@@ -2292,6 +2285,12 @@ 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,
@@ -2302,7 +2301,7 @@ ata_scsi_pass_thru(struct ata_queued_cmd *qc, const u8 *scsicmd)
*/
if ((tf->command == ATA_CMD_SET_FEATURES)
&& (tf->feature == SETFEATURES_XFER))
- return 1;
+ goto invalid_fld;
/*
* Set flags so that all registers will be written,
@@ -2323,6 +2322,11 @@ ata_scsi_pass_thru(struct ata_queued_cmd *qc, const u8 *scsicmd)
qc->nsect = cmd->bufflen / ATA_SECT_SIZE;
return 0;
+
+ invalid_fld:
+ ata_scsi_set_sense(qc->scsicmd, ILLEGAL_REQUEST, 0x24, 0x00);
+ /* "Invalid field in cdb" */
+ return 1;
}
/**
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