diff mbox series

dmaengine: idxd: expose general capabilities register in sysfs

Message ID 158256729399.55526.10842505054968710547.stgit@djiang5-desk3.ch.intel.com (mailing list archive)
State Accepted
Headers show
Series dmaengine: idxd: expose general capabilities register in sysfs | expand

Commit Message

Dave Jiang Feb. 24, 2020, 6:01 p.m. UTC 
There are some capabilities for the device that are interesting to user
apps that are interacting directly with the device. Expose gencap register
in sysfs to allow that information.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
---
 drivers/dma/idxd/sysfs.c |   11 +++++++++++
 1 file changed, 11 insertions(+)

Comments

Vinod Koul March 2, 2020, 7:13 a.m. UTC | #1 
On 24-02-20, 11:01, Dave Jiang wrote:
> There are some capabilities for the device that are interesting to user
> apps that are interacting directly with the device. Expose gencap register
> in sysfs to allow that information.

Applied, thanks
diff mbox series

Patch

diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c
index 6ca6e520a2fa..193290a0ff76 100644
--- a/drivers/dma/idxd/sysfs.c
+++ b/drivers/dma/idxd/sysfs.c
@@ -1180,6 +1180,16 @@  static ssize_t op_cap_show(struct device *dev,
 }
 static DEVICE_ATTR_RO(op_cap);
 
+static ssize_t gen_cap_show(struct device *dev,
+			    struct device_attribute *attr, char *buf)
+{
+	struct idxd_device *idxd =
+		container_of(dev, struct idxd_device, conf_dev);
+
+	return sprintf(buf, "%#llx\n", idxd->hw.gen_cap.bits);
+}
+static DEVICE_ATTR_RO(gen_cap);
+
 static ssize_t configurable_show(struct device *dev,
 				 struct device_attribute *attr, char *buf)
 {
@@ -1317,6 +1327,7 @@  static struct attribute *idxd_device_attributes[] = {
 	&dev_attr_max_batch_size.attr,
 	&dev_attr_max_transfer_size.attr,
 	&dev_attr_op_cap.attr,
+	&dev_attr_gen_cap.attr,
 	&dev_attr_configurable.attr,
 	&dev_attr_clients.attr,
 	&dev_attr_state.attr,