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Commit 0ac2377b authored by Hannes Reinecke's avatar Hannes Reinecke Committed by James Bottomley
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[SCSI] scsi_transport_spi: Export host width and HBA id 



Currently it's impossible to find out if the host supports
wide SCSI unless you're committed to trawl through syslog.
And it's near impossible to find the actual HBA id, which
is settable for some SCSI HBAs (like aic7xxx).
So export them via sysfs.

Signed-off-by: default avatarHannes Reinecke <hare@suse.de>
Signed-off-by: default avatarAnkit Jain <jankit@suse.de>
Signed-off-by: default avatarJames Bottomley <JBottomley@Parallels.com>
parent 6f8ac161

drivers/scsi/scsi_transport_spi.c

+24 −0
Original line number Diff line number Diff line
@@ -597,6 +597,28 @@ static DEVICE_ATTR(signalling, S_IRUGO, 
		   show_spi_host_signalling,

		   store_spi_host_signalling);



static ssize_t show_spi_host_width(struct device *cdev,

				      struct device_attribute *attr,

				      char *buf)

{

	struct Scsi_Host *shost = transport_class_to_shost(cdev);



	return sprintf(buf, "%s\n", shost->max_id == 16 ? "wide" : "narrow");

}

static DEVICE_ATTR(host_width, S_IRUGO,

		   show_spi_host_width, NULL);



static ssize_t show_spi_host_hba_id(struct device *cdev,

				    struct device_attribute *attr,

				    char *buf)

{

	struct Scsi_Host *shost = transport_class_to_shost(cdev);



	return sprintf(buf, "%d\n", shost->this_id);

}

static DEVICE_ATTR(hba_id, S_IRUGO,

		   show_spi_host_hba_id, NULL);



#define DV_SET(x, y)			\

	if(i->f->set_##x)		\

		i->f->set_##x(sdev->sdev_target, y)
@@ -1380,6 +1402,8 @@ static DECLARE_ANON_TRANSPORT_CLASS(spi_device_class, 


static struct attribute *host_attributes[] = {

	&dev_attr_signalling.attr,

	&dev_attr_host_width.attr,

	&dev_attr_hba_id.attr,

	NULL

};