[PATCH v2 4/8] lib/igt_drm_netlink: add set_error_threshold command support

[Ravi Kishore Koppuravuri <ravi.kishore.koppuravuri@intel.com>]

Add support for SET_ERROR_THRESHOLD to set the custom error threshold
value

Signed-off-by: Ravi Kishore Koppuravuri <ravi.kishore.koppuravuri@intel.com>
---
v2:Marked this command as response not required
---
---
 lib/igt_drm_netlink.c | 39 +++++++++++++++++++++++++++++++++++++++
 lib/igt_drm_netlink.h |  1 +
 2 files changed, 40 insertions(+)

diff --git a/lib/igt_drm_netlink.c b/lib/igt_drm_netlink.c
index c530076a6..c32e10f2f 100644
--- a/lib/igt_drm_netlink.c
+++ b/lib/igt_drm_netlink.c
@@ -29,6 +29,8 @@ static int ras_command_cb(struct nl_msg *msg, void *arg)
 	gnlh = nlmsg_data(nlh);
 
 	switch (gnlh->cmd) {
+	case DRM_RAS_CMD_SET_ERROR_THRESHOLD:
+		break;
 	case DRM_RAS_CMD_GET_ERROR_COUNTER: {
 		struct nlattr *attrs[DRM_RAS_A_ERROR_COUNTER_ATTRS_MAX + 1];
 
@@ -180,6 +182,7 @@ static int send_command(struct app_context *ctx, uint8_t cmd)
 	case DRM_RAS_CMD_GET_ERROR_THRESHOLD:
 	case DRM_RAS_CMD_GET_ERROR_COUNTER:
 		ctx->response_required = true;
+	case DRM_RAS_CMD_SET_ERROR_THRESHOLD:
 		ret = nla_put_u32(msg,
 				  DRM_RAS_A_ERROR_COUNTER_ATTRS_NODE_ID,
 				  ctx->node_id);
@@ -195,6 +198,16 @@ static int send_command(struct app_context *ctx, uint8_t cmd)
 			nlmsg_free(msg);
 			return ret;
 		}
+
+		if (cmd == DRM_RAS_CMD_SET_ERROR_THRESHOLD) {
+			ret = nla_put_u32(msg,
+					  DRM_RAS_A_ERROR_COUNTER_ATTRS_ERROR_THRESHOLD,
+					  ctx->error_threshold);
+			if (ret < 0) {
+				nlmsg_free(msg);
+				return ret;
+			}
+		}
 		break;
 	default:
 		nlmsg_free(msg);
@@ -317,6 +330,14 @@ static int validate_inputs(struct app_context *ctx, uint8_t cmd)
 		return -EINVAL;
 	}
 
+	if (cmd == DRM_RAS_CMD_SET_ERROR_THRESHOLD &&
+	    (ctx->error_threshold < 1 || ctx->error_threshold > 16)) {
+		igt_warn("Invalid error_threshold (%u) provided. "
+			 "error_threshold should be >= 1 and <= 16.\n",
+			 ctx->error_threshold);
+		return -EINVAL;
+	}
+
 	return 0;
 }
 
@@ -371,3 +392,21 @@ int get_error_threshold(struct app_context *ctx)
 
 	return 0;
 }
+
+int set_error_threshold(struct app_context *ctx)
+{
+	int ret;
+
+	ret = validate_inputs(ctx, DRM_RAS_CMD_SET_ERROR_THRESHOLD);
+	if (ret < 0)
+		return ret;
+
+	ret = send_command(ctx, DRM_RAS_CMD_SET_ERROR_THRESHOLD);
+	if (ret < 0)
+		return ret;
+
+	igt_debug("Set error threshold: node_id=%u error_id=%u threshold=%u\n",
+		  ctx->node_id, ctx->error_id, ctx->error_threshold);
+
+	return 0;
+}
diff --git a/lib/igt_drm_netlink.h b/lib/igt_drm_netlink.h
index 08ef4eed0..045dae403 100644
--- a/lib/igt_drm_netlink.h
+++ b/lib/igt_drm_netlink.h
@@ -38,6 +38,7 @@ void cleanup_nl_socket(struct app_context *ctx);
 int init_nl_socket(struct app_context *ctx);
 int get_error_counter(struct app_context *ctx);
 int get_error_threshold(struct app_context *ctx);
+int set_error_threshold(struct app_context *ctx);
 
 #endif /* IGT_DRM_NETLINK_H */
 
-- 
2.34.1