# This is a BitKeeper generated patch for the following project:
# Project Name: Linux kernel tree
# This patch format is intended for GNU patch command version 2.5 or higher.
# This patch includes the following deltas:
#	           ChangeSet	1.1198  -> 1.1199 
#	drivers/scsi/53c700.c	1.29    -> 1.30   
#
# The following is the BitKeeper ChangeSet Log
# --------------------------------------------
# 03/05/03	jejb@raven.il.steeleye.com	1.1199
# SCSI: implement properties in the 53c700 driver
# 
# Add a store for the queue_depth setting, and a show for a new
# property called outstanding tags (this is the information currently
# shown by the drivers procfs routine).
# --------------------------------------------
#
diff -Nru a/drivers/scsi/53c700.c b/drivers/scsi/53c700.c
--- a/drivers/scsi/53c700.c	Sat May  3 14:27:29 2003
+++ b/drivers/scsi/53c700.c	Sat May  3 14:27:29 2003
@@ -172,6 +172,17 @@
 STATIC void NCR_700_chip_reset(struct Scsi_Host *host);
 STATIC int NCR_700_slave_configure(Scsi_Device *SDpnt);
 STATIC void NCR_700_slave_destroy(Scsi_Device *SDpnt);
+STATIC ssize_t NCR_700_device_property_show(struct scsi_device * dev,
+					    char * buf,
+					    struct attribute *attr);
+STATIC ssize_t NCR_700_device_property_store(struct scsi_device * dev,
+					     const char * buf,
+					     size_t count,
+					     struct attribute *attr);
+
+struct device_attribute NCR_700_sdev_attrs[] = {
+	{ .attr = { .name = "outstanding_tags", .mode = S_IRUGO }, },
+};
 
 static char *NCR_700_phase[] = {
 	"",
@@ -278,6 +289,8 @@
 	tpnt->proc_info = NCR_700_proc_directory_info;
 	tpnt->slave_configure = NCR_700_slave_configure;
 	tpnt->slave_destroy = NCR_700_slave_destroy;
+	tpnt->device_property_show = NCR_700_device_property_show;
+	tpnt->device_property_store = NCR_700_device_property_store;
 	tpnt->use_blk_tcq = 1;
 	tpnt->highmem_io = 1;
 	
@@ -2007,6 +2020,8 @@
 STATIC int
 NCR_700_slave_configure(Scsi_Device *SDp)
 {
+	int i;
+
 	/* to do here: allocate memory; build a queue_full list */
 	if(SDp->tagged_supported) {
 		/* do TCQ stuff here */
@@ -2014,14 +2029,63 @@
 		/* initialise to default depth */
 		scsi_adjust_queue_depth(SDp, 0, SDp->host->cmd_per_lun);
 	}
+
+	for (i = 0; i < ARRAY_SIZE(NCR_700_sdev_attrs); i++)
+		device_create_file(&SDp->sdev_driverfs_dev,
+				   &NCR_700_sdev_attrs[i]);
 	return 0;
 }
 
 STATIC void
 NCR_700_slave_destroy(Scsi_Device *SDp)
 {
-	/* to do here: deallocate memory */
+	int i;
+
+	/* FIXME: slave_destroy can be called if no driverfs entry
+	 * has been created.  We really need a slave_unconfigure for
+	 * this type of thing */
+	if(SDp->sdev_driverfs_dev.node.next != NULL)
+		for (i = 0; i < ARRAY_SIZE(NCR_700_sdev_attrs); i++)
+			device_remove_file(&SDp->sdev_driverfs_dev,
+					   &NCR_700_sdev_attrs[i]);
+
+}
+
+STATIC ssize_t
+NCR_700_device_property_show(struct scsi_device * sdev, char * buf,
+			     struct attribute *attr)
+{
+	char *name = attr->name;
+	int ret = 0;
+
+	if (strcmp(name, "outstanding_tags") == 0) {
+		ret = snprintf(buf, 20, "%d\n", NCR_700_get_depth(sdev));
+	}
+	return ret;
 }
+
+STATIC ssize_t
+NCR_700_device_property_store(struct scsi_device * sdev, const char * buf,
+			      size_t count, struct attribute *attr)
+{
+	char *name = attr->name;
+
+	if (strcmp(name, "queue_depth") == 0) {
+		long new_depth = simple_strtol(buf, NULL, 0);
+		if (new_depth > NCR_700_MAX_TAGS) {
+			return -EINVAL;
+		} else if (new_depth < 0) {
+			/* FIXME: turn off tags need to quiesce the
+			 * device to do this */
+			return -EINVAL;
+		} else {
+			scsi_adjust_queue_depth(sdev, 0, new_depth);
+		}
+	}
+	return 0;
+}
+
+
 
 EXPORT_SYMBOL(NCR_700_detect);
 EXPORT_SYMBOL(NCR_700_release);