From 0ac2377b61089e160d8e13b03cfdec89572cd741 Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Thu, 30 Jun 2011 02:19:57 +0530 Subject: [PATCH] [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: Hannes Reinecke Signed-off-by: Ankit Jain Signed-off-by: James Bottomley --- drivers/scsi/scsi_transport_spi.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/scsi/scsi_transport_spi.c b/drivers/scsi/scsi_transport_spi.c index 8a172d4f4564..5fbeadd96819 100644 --- a/drivers/scsi/scsi_transport_spi.c +++ b/drivers/scsi/scsi_transport_spi.c @@ -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 }; -- 2.20.1