mlx4: propagate node_description changes down to FW to generate trap 144

Commit Message

jackm Oct. 4, 2010, 12:11 p.m. UTC

None

Patch

Index: infiniband/drivers/infiniband/hw/mlx4/main.c
===================================================================
--- infiniband.orig/drivers/infiniband/hw/mlx4/main.c	2010-10-04 10:54:50.000000000 +0200
+++ infiniband/drivers/infiniband/hw/mlx4/main.c	2010-10-04 12:25:46.000000000 +0200
@@ -272,14 +272,31 @@  out:
 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
 				 struct ib_device_modify *props)
 {
+	struct mlx4_cmd_mailbox *mailbox;
+
 	if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 		return -EOPNOTSUPP;
 
-	if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
-		spin_lock(&to_mdev(ibdev)->sm_lock);
-		memcpy(ibdev->node_desc, props->node_desc, 64);
-		spin_unlock(&to_mdev(ibdev)->sm_lock);
-	}
+	if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
+		return 0;
+
+	spin_lock(&to_mdev(ibdev)->sm_lock);
+	memcpy(ibdev->node_desc, props->node_desc, 64);
+	spin_unlock(&to_mdev(ibdev)->sm_lock);
+
+	/* if possible, pass node desc to FW, so it can generate
+	 * a 144 trap. If cmd fails, just ignore.
+	 */
+	mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
+	if (IS_ERR(mailbox))
+		return 0;
+
+	memset(mailbox->buf, 0, 256);
+	memcpy(mailbox->buf, props->node_desc, 64);
+	mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
+		 MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A);
+
+	mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
 
 	return 0;
 }
Index: infiniband/include/linux/mlx4/cmd.h
===================================================================
--- infiniband.orig/include/linux/mlx4/cmd.h	2010-01-28 09:43:01.000000000 +0200
+++ infiniband/include/linux/mlx4/cmd.h	2010-10-04 11:10:27.000000000 +0200
@@ -57,6 +57,7 @@  enum {
 	MLX4_CMD_QUERY_PORT	 = 0x43,
 	MLX4_CMD_SENSE_PORT	 = 0x4d,
 	MLX4_CMD_SET_PORT	 = 0xc,
+	MLX4_CMD_SET_NODE	 = 0x5a,
 	MLX4_CMD_ACCESS_DDR	 = 0x2e,
 	MLX4_CMD_MAP_ICM	 = 0xffa,
 	MLX4_CMD_UNMAP_ICM	 = 0xff9,