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authorRob Landley <rob@landley.net>2007-11-03 13:30:39 -0500
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2008-01-11 18:22:40 -0600
commiteb44820c28bc9a042e1157b41c677018a8fdfc74 (patch)
treede027b3cd40533488805ef7ee8156f077cd2b7e5 /drivers/scsi/scsi_scan.c
parent3f48985823001c89c9bd5c5e57cc07530578dfcc (diff)
[SCSI] Add Documentation and integrate into docbook build
Add Documentation/DocBook/scsi_midlayer.tmpl, add to Makefile, and update lots of kerneldoc comments in drivers/scsi/*. Updated with comments from Stefan Richter, Stephen M. Cameron, James Bottomley and Randy Dunlap. Signed-off-by: Rob Landley <rob@landley.net> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/scsi/scsi_scan.c')
-rw-r--r--drivers/scsi/scsi_scan.c32
1 files changed, 20 insertions, 12 deletions
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index 40ea71cd2ca..7e8b2045ccf 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -221,6 +221,9 @@ static void scsi_unlock_floptical(struct scsi_device *sdev,
/**
* scsi_alloc_sdev - allocate and setup a scsi_Device
+ * @starget: which target to allocate a &scsi_device for
+ * @lun: which lun
+ * @hostdata: usually NULL and set by ->slave_alloc instead
*
* Description:
* Allocate, initialize for io, and return a pointer to a scsi_Device.
@@ -472,7 +475,6 @@ static void scsi_target_reap_usercontext(struct work_struct *work)
/**
* scsi_target_reap - check to see if target is in use and destroy if not
- *
* @starget: target to be checked
*
* This is used after removing a LUN or doing a last put of the target
@@ -928,8 +930,7 @@ static inline void scsi_destroy_sdev(struct scsi_device *sdev)
#ifdef CONFIG_SCSI_LOGGING
/**
- * scsi_inq_str - print INQUIRY data from min to max index,
- * strip trailing whitespace
+ * scsi_inq_str - print INQUIRY data from min to max index, strip trailing whitespace
* @buf: Output buffer with at least end-first+1 bytes of space
* @inq: Inquiry buffer (input)
* @first: Offset of string into inq
@@ -957,9 +958,10 @@ static unsigned char *scsi_inq_str(unsigned char *buf, unsigned char *inq,
* scsi_probe_and_add_lun - probe a LUN, if a LUN is found add it
* @starget: pointer to target device structure
* @lun: LUN of target device
- * @sdevscan: probe the LUN corresponding to this scsi_device
- * @sdevnew: store the value of any new scsi_device allocated
* @bflagsp: store bflags here if not NULL
+ * @sdevp: probe the LUN corresponding to this scsi_device
+ * @rescan: if nonzero skip some code only needed on first scan
+ * @hostdata: passed to scsi_alloc_sdev()
*
* Description:
* Call scsi_probe_lun, if a LUN with an attached device is found,
@@ -1110,6 +1112,8 @@ static int scsi_probe_and_add_lun(struct scsi_target *starget,
* scsi_sequential_lun_scan - sequentially scan a SCSI target
* @starget: pointer to target structure to scan
* @bflags: black/white list flag for LUN 0
+ * @scsi_level: Which version of the standard does this device adhere to
+ * @rescan: passed to scsi_probe_add_lun()
*
* Description:
* Generally, scan from LUN 1 (LUN 0 is assumed to already have been
@@ -1220,7 +1224,7 @@ EXPORT_SYMBOL(scsilun_to_int);
/**
* int_to_scsilun: reverts an int into a scsi_lun
- * @int: integer to be reverted
+ * @lun: integer to be reverted
* @scsilun: struct scsi_lun to be set.
*
* Description:
@@ -1252,18 +1256,22 @@ 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
+ * @starget: which target
+ * @bflags: Zero or a mix of BLIST_NOLUN, BLIST_REPORTLUN2, or BLIST_NOREPORTLUN
+ * @rescan: nonzero if we can skip code only needed on first scan
*
* Description:
- * If @sdevscan is for a SCSI-3 or up device, send a REPORT LUN
- * command, and scan the resulting list of LUNs by calling
- * scsi_probe_and_add_lun.
+ * Fast scanning for modern (SCSI-3) devices by sending a REPORT LUN command.
+ * Scan the resulting list of LUNs by calling scsi_probe_and_add_lun.
*
- * Modifies sdevscan->lun.
+ * If BLINK_REPORTLUN2 is set, scan a target that supports more than 8
+ * LUNs even if it's older than SCSI-3.
+ * If BLIST_NOREPORTLUN is set, return 1 always.
+ * If BLIST_NOLUN is set, return 0 always.
*
* Return:
* 0: scan completed (or no memory, so further scanning is futile)
- * 1: no report lun scan, or not configured
+ * 1: could not scan with REPORT LUN
**/
static int scsi_report_lun_scan(struct scsi_target *starget, int bflags,
int rescan)