Messages in this thread Patch in this message | | | Subject | [PATCH 2/2] cciss: add transport mode attribute to sys | From | Joe Handzik <> | Date | Wed, 27 Jul 2011 16:38:36 -0500 |
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From: Joseph Handzik <joseph.t.handzik@beardog.cce.hp.com>
Signed-off-by: Joseph Handzik <joseph.t.handzik@beardog.cce.hp.com> --- .../ABI/testing/sysfs-bus-pci-devices-cciss | 7 +++++++ drivers/block/cciss.c | 13 +++++++++++++ 2 files changed, 20 insertions(+), 0 deletions(-)
diff --git a/Documentation/ABI/testing/sysfs-bus-pci-devices-cciss b/Documentation/ABI/testing/sysfs-bus-pci-devices-cciss index f5bb0a3..53d99ed 100644 --- a/Documentation/ABI/testing/sysfs-bus-pci-devices-cciss +++ b/Documentation/ABI/testing/sysfs-bus-pci-devices-cciss @@ -71,3 +71,10 @@ Description: Value of 1 indicates the controller can honor the reset_devices a dump device, as kdump requires resetting the device in order to work reliably. +Where: /sys/bus/pci/devices/<dev>/ccissX/transport_mode +Date: July 2011 +Kernel Version: 3.0 +Contact: iss_storagedev@hp.com +Description: Value of "simple" indicates that the controller has been placed + in "simple mode". Value of "performant" indicates that the + controller has been placed in "performant mode". diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index 61f0b5b..6da7ede 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -641,6 +641,18 @@ static ssize_t host_store_rescan(struct device *dev, } static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan); +static ssize_t host_show_transport_mode(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct ctlr_info *h = to_hba(dev); + + return snprintf(buf, 20, "%s\n", + h->transMethod & CFGTBL_Trans_Performant ? + "performant" : "simple"); +} +static DEVICE_ATTR(transport_mode, S_IRUGO, host_show_transport_mode, NULL); + static ssize_t dev_show_unique_id(struct device *dev, struct device_attribute *attr, char *buf) @@ -813,6 +825,7 @@ static DEVICE_ATTR(usage_count, S_IRUGO, cciss_show_usage_count, NULL); static struct attribute *cciss_host_attrs[] = { &dev_attr_rescan.attr, &dev_attr_resettable.attr, + &dev_attr_transport_mode.attr, NULL };
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