1 files changed, 102 insertions, 1 deletions

diff --git a/drivers/infiniband/hw/hfi1/sysfs.c b/drivers/infiniband/hw/hfi1/sysfs.c
index 74c84c655f7e..edba22461a9c 100644
--- a/drivers/infiniband/hw/hfi1/sysfs.c
+++ b/drivers/infiniband/hw/hfi1/sysfs.c
@@ -766,13 +766,95 @@ bail:
 	return ret;
 }
 
+struct sde_attribute {
+	struct attribute attr;
+	ssize_t (*show)(struct sdma_engine *sde, char *buf);
+	ssize_t (*store)(struct sdma_engine *sde, const char *buf, size_t cnt);
+};
+
+static ssize_t sde_show(struct kobject *kobj, struct attribute *attr, char *buf)
+{
+	struct sde_attribute *sde_attr =
+		container_of(attr, struct sde_attribute, attr);
+	struct sdma_engine *sde =
+		container_of(kobj, struct sdma_engine, kobj);
+
+	if (!sde_attr->show)
+		return -EINVAL;
+
+	return sde_attr->show(sde, buf);
+}
+
+static ssize_t sde_store(struct kobject *kobj, struct attribute *attr,
+			 const char *buf, size_t count)
+{
+	struct sde_attribute *sde_attr =
+		container_of(attr, struct sde_attribute, attr);
+	struct sdma_engine *sde =
+		container_of(kobj, struct sdma_engine, kobj);
+
+	if (!capable(CAP_SYS_ADMIN))
+		return -EPERM;
+
+	if (!sde_attr->store)
+		return -EINVAL;
+
+	return sde_attr->store(sde, buf, count);
+}
+
+static const struct sysfs_ops sde_sysfs_ops = {
+	.show = sde_show,
+	.store = sde_store,
+};
+
+static struct kobj_type sde_ktype = {
+	.sysfs_ops = &sde_sysfs_ops,
+};
+
+#define SDE_ATTR(_name, _mode, _show, _store) \
+	struct sde_attribute sde_attr_##_name = \
+		__ATTR(_name, _mode, _show, _store)
+
+static ssize_t sde_show_cpu_to_sde_map(struct sdma_engine *sde, char *buf)
+{
+	return sdma_get_cpu_to_sde_map(sde, buf);
+}
+
+static ssize_t sde_store_cpu_to_sde_map(struct sdma_engine *sde,
+					const char *buf, size_t count)
+{
+	return sdma_set_cpu_to_sde_map(sde, buf, count);
+}
+
+static ssize_t sde_show_vl(struct sdma_engine *sde, char *buf)
+{
+	int vl;
+
+	vl = sdma_engine_get_vl(sde);
+	if (vl < 0)
+		return vl;
+
+	return snprintf(buf, PAGE_SIZE, "%d\n", vl);
+}
+
+static SDE_ATTR(cpu_list, S_IWUSR | S_IRUGO,
+		sde_show_cpu_to_sde_map,
+		sde_store_cpu_to_sde_map);
+static SDE_ATTR(vl, S_IRUGO, sde_show_vl, NULL);
+
+static struct sde_attribute *sde_attribs[] = {
+	&sde_attr_cpu_list,
+	&sde_attr_vl
+};
+
 /*
  * Register and create our files in /sys/class/infiniband.
  */
 int hfi1_verbs_register_sysfs(struct hfi1_devdata *dd)
 {
 	struct ib_device *dev = &dd->verbs_dev.rdi.ibdev;
-	int i, ret;
+	struct device *class_dev = &dev->dev;
+	int i, j, ret;
 
 	for (i = 0; i < ARRAY_SIZE(hfi1_attributes); ++i) {
 		ret = device_create_file(&dev->dev, hfi1_attributes[i]);
@@ -780,10 +862,29 @@ int hfi1_verbs_register_sysfs(struct hfi1_devdata *dd)
 			goto bail;
 	}
 
+	for (i = 0; i < dd->num_sdma; i++) {
+		ret = kobject_init_and_add(&dd->per_sdma[i].kobj,
+					   &sde_ktype, &class_dev->kobj,
+					   "sdma%d", i);
+		if (ret)
+			goto bail;
+
+		for (j = 0; j < ARRAY_SIZE(sde_attribs); j++) {
+			ret = sysfs_create_file(&dd->per_sdma[i].kobj,
+						&sde_attribs[j]->attr);
+			if (ret)
+				goto bail;
+		}
+	}
+
 	return 0;
 bail:
 	for (i = 0; i < ARRAY_SIZE(hfi1_attributes); ++i)
 		device_remove_file(&dev->dev, hfi1_attributes[i]);
+
+	for (i = 0; i < dd->num_sdma; i++)
+		kobject_del(&dd->per_sdma[i].kobj);
+
 	return ret;
 }