/**
* scsi_unlock_floptical - unlock device via a special MODE SENSE command
- * @sreq: used to send the command
+ * @sdev: scsi device to send command to
* @result: area to store the result of the MODE SENSE
*
* Description:
- * Send a vendor specific MODE SENSE (not a MODE SELECT) command using
- * @sreq to unlock a device, storing the (unused) results into result.
+ * Send a vendor specific MODE SENSE (not a MODE SELECT) command.
* Called for BLIST_KEY devices.
**/
-static void scsi_unlock_floptical(struct scsi_request *sreq,
+static void scsi_unlock_floptical(struct scsi_device *sdev,
unsigned char *result)
{
unsigned char scsi_cmd[MAX_COMMAND_SIZE];
scsi_cmd[1] = 0;
scsi_cmd[2] = 0x2e;
scsi_cmd[3] = 0;
- scsi_cmd[4] = 0x2a; /* size */
+ scsi_cmd[4] = 0x2a; /* size */
scsi_cmd[5] = 0;
- sreq->sr_cmd_len = 0;
- sreq->sr_data_direction = DMA_FROM_DEVICE;
- scsi_wait_req(sreq, scsi_cmd, result, 0x2a /* size */, SCSI_TIMEOUT, 3);
+ scsi_execute_req(sdev, scsi_cmd, DMA_FROM_DEVICE, result, 0x2a, NULL,
+ SCSI_TIMEOUT, 3);
}
/**
{
struct device *parent = dev->parent;
struct scsi_target *starget = to_scsi_target(dev);
+ struct Scsi_Host *shost = dev_to_shost(parent);
+
+ if (shost->hostt->target_destroy)
+ shost->hostt->target_destroy(starget);
kfree(starget);
put_device(parent);
}
unsigned long flags;
const int size = sizeof(struct scsi_target)
+ shost->transportt->target_size;
- struct scsi_target *starget = kmalloc(size, GFP_ATOMIC);
+ struct scsi_target *starget;
struct scsi_target *found_target;
+ /*
+ * Obtain the real parent from the transport. The transport
+ * is allowed to fail (no error) if there is nothing at that
+ * target id.
+ */
+ if (shost->transportt->target_parent) {
+ spin_lock_irqsave(shost->host_lock, flags);
+ parent = shost->transportt->target_parent(shost, channel, id);
+ spin_unlock_irqrestore(shost->host_lock, flags);
+ if (!parent)
+ return NULL;
+ }
+
+ starget = kmalloc(size, GFP_KERNEL);
if (!starget) {
printk(KERN_ERR "%s: allocation failure\n", __FUNCTION__);
return NULL;
list_add_tail(&starget->siblings, &shost->__targets);
spin_unlock_irqrestore(shost->host_lock, flags);
/* allocate and add */
- transport_setup_device(&starget->dev);
- device_add(&starget->dev);
- transport_add_device(&starget->dev);
+ transport_setup_device(dev);
+ device_add(dev);
+ transport_add_device(dev);
+ if (shost->hostt->target_alloc) {
+ int error = shost->hostt->target_alloc(starget);
+
+ if(error) {
+ dev_printk(KERN_ERR, dev, "target allocation failed, error %d\n", error);
+ /* don't want scsi_target_reap to do the final
+ * put because it will be under the host lock */
+ get_device(dev);
+ scsi_target_reap(starget);
+ put_device(dev);
+ return NULL;
+ }
+ }
+
return starget;
found:
/**
* scsi_probe_lun - probe a single LUN using a SCSI INQUIRY
- * @sreq: used to send the INQUIRY
+ * @sdev: scsi_device to probe
* @inq_result: area to store the INQUIRY result
+ * @result_len: len of inq_result
* @bflags: store any bflags found here
*
* Description:
- * Probe the lun associated with @sreq using a standard SCSI INQUIRY;
+ * Probe the lun associated with @req using a standard SCSI INQUIRY;
*
- * If the INQUIRY is successful, sreq->sr_result is zero and: the
+ * If the INQUIRY is successful, zero is returned and the
* INQUIRY data is in @inq_result; the scsi_level and INQUIRY length
- * are copied to the Scsi_Device at @sreq->sr_device (sdev);
- * any flags value is stored in *@bflags.
+ * are copied to the Scsi_Device any flags value is stored in *@bflags.
**/
-static void scsi_probe_lun(struct scsi_request *sreq, char *inq_result,
- int *bflags)
+static int scsi_probe_lun(struct scsi_device *sdev, char *inq_result,
+ int result_len, int *bflags)
{
- struct scsi_device *sdev = sreq->sr_device; /* a bit ugly */
+ char sense[SCSI_SENSE_BUFFERSIZE];
unsigned char scsi_cmd[MAX_COMMAND_SIZE];
int first_inquiry_len, try_inquiry_len, next_inquiry_len;
int response_len = 0;
- int pass, count;
+ int pass, count, result;
struct scsi_sense_hdr sshdr;
*bflags = 0;
memset(scsi_cmd, 0, 6);
scsi_cmd[0] = INQUIRY;
scsi_cmd[4] = (unsigned char) try_inquiry_len;
- sreq->sr_cmd_len = 0;
- sreq->sr_data_direction = DMA_FROM_DEVICE;
+ memset(sense, 0, sizeof(sense));
memset(inq_result, 0, try_inquiry_len);
- scsi_wait_req(sreq, (void *) scsi_cmd, (void *) inq_result,
- try_inquiry_len,
- HZ/2 + HZ*scsi_inq_timeout, 3);
+
+ result = scsi_execute_req(sdev, scsi_cmd, DMA_FROM_DEVICE,
+ inq_result, try_inquiry_len, sense,
+ HZ / 2 + HZ * scsi_inq_timeout, 3);
SCSI_LOG_SCAN_BUS(3, printk(KERN_INFO "scsi scan: INQUIRY %s "
"with code 0x%x\n",
- sreq->sr_result ? "failed" : "successful",
- sreq->sr_result));
+ result ? "failed" : "successful", result));
- if (sreq->sr_result) {
+ if (result) {
/*
* not-ready to ready transition [asc/ascq=0x28/0x0]
* or power-on, reset [asc/ascq=0x29/0x0], continue.
* INQUIRY should not yield UNIT_ATTENTION
* but many buggy devices do so anyway.
*/
- if ((driver_byte(sreq->sr_result) & DRIVER_SENSE) &&
- scsi_request_normalize_sense(sreq, &sshdr)) {
+ if ((driver_byte(result) & DRIVER_SENSE) &&
+ scsi_normalize_sense(sense, sizeof(sense),
+ &sshdr)) {
if ((sshdr.sense_key == UNIT_ATTENTION) &&
((sshdr.asc == 0x28) ||
(sshdr.asc == 0x29)) &&
break;
}
- if (sreq->sr_result == 0) {
+ if (result == 0) {
response_len = (unsigned char) inq_result[4] + 5;
if (response_len > 255)
response_len = first_inquiry_len; /* sanity */
/* If the last transfer attempt got an error, assume the
* peripheral doesn't exist or is dead. */
- if (sreq->sr_result)
- return;
+ if (result)
+ return -EIO;
/* Don't report any more data than the device says is valid */
sdev->inquiry_len = min(try_inquiry_len, response_len);
(sdev->scsi_level == 1 && (inq_result[3] & 0x0f) == 1))
sdev->scsi_level++;
- return;
+ return 0;
}
/**
case TYPE_MEDIUM_CHANGER:
case TYPE_ENCLOSURE:
case TYPE_COMM:
+ case TYPE_RBC:
sdev->writeable = 1;
break;
case TYPE_WORM:
* register it and tell the rest of the kernel
* about it.
*/
- scsi_sysfs_add_sdev(sdev);
+ if (scsi_sysfs_add_sdev(sdev) != 0)
+ return SCSI_SCAN_NO_RESPONSE;
return SCSI_SCAN_LUN_PRESENT;
}
void *hostdata)
{
struct scsi_device *sdev;
- struct scsi_request *sreq;
unsigned char *result;
- int bflags, res = SCSI_SCAN_NO_RESPONSE;
+ int bflags, res = SCSI_SCAN_NO_RESPONSE, result_len = 256;
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
/*
sdev = scsi_alloc_sdev(starget, lun, hostdata);
if (!sdev)
goto out;
- sreq = scsi_allocate_request(sdev, GFP_ATOMIC);
- if (!sreq)
- goto out_free_sdev;
- result = kmalloc(256, GFP_ATOMIC |
- (shost->unchecked_isa_dma) ? __GFP_DMA : 0);
+
+ result = kmalloc(result_len, GFP_ATOMIC |
+ ((shost->unchecked_isa_dma) ? __GFP_DMA : 0));
if (!result)
- goto out_free_sreq;
+ goto out_free_sdev;
- scsi_probe_lun(sreq, result, &bflags);
- if (sreq->sr_result)
+ if (scsi_probe_lun(sdev, result, result_len, &bflags))
goto out_free_result;
/*
if (res == SCSI_SCAN_LUN_PRESENT) {
if (bflags & BLIST_KEY) {
sdev->lockable = 0;
- scsi_unlock_floptical(sreq, result);
+ scsi_unlock_floptical(sdev, result);
}
if (bflagsp)
*bflagsp = bflags;
out_free_result:
kfree(result);
- out_free_sreq:
- scsi_release_request(sreq);
out_free_sdev:
if (res == SCSI_SCAN_LUN_PRESENT) {
if (sdevp) {
return lun;
}
+/**
+ * int_to_scsilun: reverts an int into a scsi_lun
+ * @int: integer to be reverted
+ * @scsilun: struct scsi_lun to be set.
+ *
+ * Description:
+ * Reverts the functionality of the scsilun_to_int, which packed
+ * an 8-byte lun value into an int. This routine unpacks the int
+ * back into the lun value.
+ * Note: the scsilun_to_int() routine does not truly handle all
+ * 8bytes of the lun value. This functions restores only as much
+ * as was set by the routine.
+ *
+ * Notes:
+ * Given an integer : 0x0b030a04, this function returns a
+ * scsi_lun of : struct scsi_lun of: 0a 04 0b 03 00 00 00 00
+ *
+ **/
+void int_to_scsilun(unsigned int lun, struct scsi_lun *scsilun)
+{
+ int i;
+
+ memset(scsilun->scsi_lun, 0, sizeof(scsilun->scsi_lun));
+
+ for (i = 0; i < sizeof(lun); i += 2) {
+ scsilun->scsi_lun[i] = (lun >> 8) & 0xFF;
+ scsilun->scsi_lun[i+1] = lun & 0xFF;
+ lun = lun >> 16;
+ }
+}
+EXPORT_SYMBOL(int_to_scsilun);
+
/**
* scsi_report_lun_scan - Scan using SCSI REPORT LUN results
* @sdevscan: scan the host, channel, and id of this Scsi_Device
int rescan)
{
char devname[64];
+ char sense[SCSI_SENSE_BUFFERSIZE];
unsigned char scsi_cmd[MAX_COMMAND_SIZE];
unsigned int length;
unsigned int lun;
unsigned int num_luns;
unsigned int retries;
+ int result;
struct scsi_lun *lunp, *lun_data;
- struct scsi_request *sreq;
u8 *data;
struct scsi_sense_hdr sshdr;
struct scsi_target *starget = scsi_target(sdev);
if (bflags & BLIST_NOLUN)
return 0;
- sreq = scsi_allocate_request(sdev, GFP_ATOMIC);
- if (!sreq)
- goto out;
-
sprintf(devname, "host %d channel %d id %d",
sdev->host->host_no, sdev->channel, sdev->id);
lun_data = kmalloc(length, GFP_ATOMIC |
(sdev->host->unchecked_isa_dma ? __GFP_DMA : 0));
if (!lun_data)
- goto out_release_request;
+ goto out;
scsi_cmd[0] = REPORT_LUNS;
scsi_cmd[10] = 0; /* reserved */
scsi_cmd[11] = 0; /* control */
- sreq->sr_cmd_len = 0;
- sreq->sr_data_direction = DMA_FROM_DEVICE;
/*
* We can get a UNIT ATTENTION, for example a power on/reset, so
SCSI_LOG_SCAN_BUS(3, printk (KERN_INFO "scsi scan: Sending"
" REPORT LUNS to %s (try %d)\n", devname,
retries));
- scsi_wait_req(sreq, scsi_cmd, lun_data, length,
- SCSI_TIMEOUT + 4*HZ, 3);
+
+ memset(sense, 0, sizeof(sense));
+ result = scsi_execute_req(sdev, scsi_cmd, DMA_FROM_DEVICE,
+ lun_data, length, sense,
+ SCSI_TIMEOUT + 4 * HZ, 3);
+
SCSI_LOG_SCAN_BUS(3, printk (KERN_INFO "scsi scan: REPORT LUNS"
- " %s (try %d) result 0x%x\n", sreq->sr_result
- ? "failed" : "successful", retries,
- sreq->sr_result));
- if (sreq->sr_result == 0)
+ " %s (try %d) result 0x%x\n", result
+ ? "failed" : "successful", retries, result));
+ if (result == 0)
break;
- else if (scsi_request_normalize_sense(sreq, &sshdr)) {
+ else if (scsi_normalize_sense(sense, sizeof(sense), &sshdr)) {
if (sshdr.sense_key != UNIT_ATTENTION)
break;
}
}
- if (sreq->sr_result) {
+ if (result) {
/*
* The device probably does not support a REPORT LUN command
*/
kfree(lun_data);
- scsi_release_request(sreq);
return 1;
}
- scsi_release_request(sreq);
/*
* Get the length from the first four bytes of lun_data.
kfree(lun_data);
return 0;
- out_release_request:
- scsi_release_request(sreq);
out:
/*
* We are out of memory, don't try scanning any further.
if (!starget)
return ERR_PTR(-ENOMEM);
+ get_device(&starget->dev);
down(&shost->scan_mutex);
- res = scsi_probe_and_add_lun(starget, lun, NULL, &sdev, 1, hostdata);
- if (res != SCSI_SCAN_LUN_PRESENT)
- sdev = ERR_PTR(-ENODEV);
+ if (scsi_host_scan_allowed(shost)) {
+ res = scsi_probe_and_add_lun(starget, lun, NULL, &sdev, 1,
+ hostdata);
+ if (res != SCSI_SCAN_LUN_PRESENT)
+ sdev = ERR_PTR(-ENODEV);
+ }
up(&shost->scan_mutex);
scsi_target_reap(starget);
put_device(&starget->dev);
return -EINVAL;
down(&shost->scan_mutex);
- if (channel == SCAN_WILD_CARD)
- for (channel = 0; channel <= shost->max_channel; channel++)
+ if (scsi_host_scan_allowed(shost)) {
+ if (channel == SCAN_WILD_CARD)
+ for (channel = 0; channel <= shost->max_channel;
+ channel++)
+ scsi_scan_channel(shost, channel, id, lun,
+ rescan);
+ else
scsi_scan_channel(shost, channel, id, lun, rescan);
- else
- scsi_scan_channel(shost, channel, id, lun, rescan);
+ }
up(&shost->scan_mutex);
return 0;
git.samba.org / sfrench / cifs-2.6.git / blobdiff