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[SCSI] hpsa: Add transport_mode host attribute in /sys 

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Stephen M. Cameron 2011-02-15 15:32:58 -06:00 committed by James Bottomley
parent a9a3a2739a
commit 745a7a25bc
2 changed files with 22 additions and 1 deletions
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5
Documentation/scsi/hpsa.txt
View File

@ -45,6 +45,7 @@ HPSA specific entries in /sys
/sys/class/scsi_host/host*/rescan
/sys/class/scsi_host/host*/firmware_revision
/sys/class/scsi_host/host*/transport_mode
the host "rescan" attribute is a write only attribute. Writing to this
attribute will cause the driver to scan for new, changed, or removed devices
@ -61,6 +62,10 @@ HPSA specific entries in /sys
root@host:/sys/class/scsi_host/host4# cat firmware_revision
7.14
The transport_mode indicates whether the controller is in "performant"
or "simple" mode. This is controlled by the "hpsa_simple_mode" module
parameter.
HPSA specific disk attributes:
------------------------------

18
drivers/scsi/hpsa.c
View File

@ -161,6 +161,8 @@ static ssize_t host_show_firmware_revision(struct device *dev,
struct device_attribute *attr, char *buf);
static ssize_t host_show_commands_outstanding(struct device *dev,
struct device_attribute *attr, char *buf);
static ssize_t host_show_transport_mode(struct device *dev,
struct device_attribute *attr, char *buf);
static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno);
static ssize_t host_store_rescan(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count);
@ -192,6 +194,8 @@ static DEVICE_ATTR(firmware_revision, S_IRUGO,
host_show_firmware_revision, NULL);
static DEVICE_ATTR(commands_outstanding, S_IRUGO,
host_show_commands_outstanding, NULL);
static DEVICE_ATTR(transport_mode, S_IRUGO,
host_show_transport_mode, NULL);
static struct device_attribute *hpsa_sdev_attrs[] = {
&dev_attr_raid_level,
@ -204,6 +208,7 @@ static struct device_attribute *hpsa_shost_attrs[] = {
&dev_attr_rescan,
&dev_attr_firmware_revision,
&dev_attr_commands_outstanding,
&dev_attr_transport_mode,
NULL,
};
@ -313,6 +318,18 @@ static ssize_t host_show_commands_outstanding(struct device *dev,
return snprintf(buf, 20, "%d\n", h->commands_outstanding);
}
static ssize_t host_show_transport_mode(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct ctlr_info *h;
struct Scsi_Host *shost = class_to_shost(dev);
h = shost_to_hba(shost);
return snprintf(buf, 20, "%s\n",
h->transMethod == CFGTBL_Trans_Performant ?
"performant" : "simple");
}
/* Enqueuing and dequeuing functions for cmdlists. */
static inline void addQ(struct list_head *list, struct CommandList *c)
{
@ -3768,7 +3785,6 @@ static int __devinit hpsa_init_one(struct pci_dev *pdev,
h->pdev = pdev;
h->busy_initializing = 1;
h->intr_mode = hpsa_simple_mode ? SIMPLE_MODE_INT : PERF_MODE_INT;
printk(KERN_WARNING "hpsa_simple_mode is %d\n", hpsa_simple_mode);
INIT_LIST_HEAD(&h->cmpQ);
INIT_LIST_HEAD(&h->reqQ);
spin_lock_init(&h->lock);