[Trusty SRU PATCH] (upstream) net/mlx4_core: Adjust command timeouts to conform to the firmware spec

[Craig Magina]

From: Jack Morgenstein <jackm at dev.mellanox.co.il>

The firmware spec states that the timeout for all commands should be 60 seconds.

In the past, the spec indicated that there were several classes of timeout
(short, medium, and long).  The driver has these different timeout classes.
We leave the class differentiation in the driver as-is (to protect against any
future spec changes), but set the timeout for all classes to be 60 seconds.

In addition, we fix a few commands which had hard-coded numeric timeouts specified.

BugLink: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1455121

Signed-off-by: Jack Morgenstein <jackm at dev.mellanox.co.il>
Signed-off-by: Amir Vadai <amirv at mellanox.com>
Signed-off-by: David S. Miller <davem at davemloft.net>
(cherry picked from commit 5a03108689c6f3e448a920b42af04e6d28401f80)
Signed-off-by: Craig Magina <craig.magina at canonical.com>
---
 drivers/net/ethernet/mellanox/mlx4/fw.c | 19 ++++++++++---------
 drivers/net/ethernet/mellanox/mlx4/mr.c |  4 ++--
 include/linux/mlx4/cmd.h                |  6 +++---
 3 files changed, 15 insertions(+), 14 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c
index 5f994fd..ff3246b 100644
--- a/drivers/net/ethernet/mellanox/mlx4/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx4/fw.c
@@ -1541,8 +1541,8 @@ int mlx4_INIT_HCA(struct mlx4_dev *dev, struct mlx4_init_hca_param *param)
 		MLX4_PUT(inbox, parser_params,	INIT_HCA_VXLAN_OFFSET);
 	}
 
-	err = mlx4_cmd(dev, mailbox->dma, 0, 0, MLX4_CMD_INIT_HCA, 10000,
-		       MLX4_CMD_NATIVE);
+	err = mlx4_cmd(dev, mailbox->dma, 0, 0, MLX4_CMD_INIT_HCA,
+		       MLX4_CMD_TIME_CLASS_C, MLX4_CMD_NATIVE);
 
 	if (err)
 		mlx4_err(dev, "INIT_HCA returns %d\n", err);
@@ -1785,7 +1785,7 @@ int mlx4_CLOSE_PORT_wrapper(struct mlx4_dev *dev, int slave,
 	if (dev->caps.port_mask[port] != MLX4_PORT_TYPE_IB) {
 		if (priv->mfunc.master.init_port_ref[port] == 1) {
 			err = mlx4_cmd(dev, 0, port, 0, MLX4_CMD_CLOSE_PORT,
-				       1000, MLX4_CMD_NATIVE);
+				       MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
 			if (err)
 				return err;
 		}
@@ -1796,7 +1796,7 @@ int mlx4_CLOSE_PORT_wrapper(struct mlx4_dev *dev, int slave,
 			if (!priv->mfunc.master.qp0_state[port].qp0_active &&
 			    priv->mfunc.master.qp0_state[port].port_active) {
 				err = mlx4_cmd(dev, 0, port, 0, MLX4_CMD_CLOSE_PORT,
-					       1000, MLX4_CMD_NATIVE);
+					       MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
 				if (err)
 					return err;
 				priv->mfunc.master.slave_state[slave].init_port_mask &= ~(1 << port);
@@ -1811,15 +1811,15 @@ int mlx4_CLOSE_PORT_wrapper(struct mlx4_dev *dev, int slave,
 
 int mlx4_CLOSE_PORT(struct mlx4_dev *dev, int port)
 {
-	return mlx4_cmd(dev, 0, port, 0, MLX4_CMD_CLOSE_PORT, 1000,
-			MLX4_CMD_WRAPPED);
+	return mlx4_cmd(dev, 0, port, 0, MLX4_CMD_CLOSE_PORT,
+			MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
 }
 EXPORT_SYMBOL_GPL(mlx4_CLOSE_PORT);
 
 int mlx4_CLOSE_HCA(struct mlx4_dev *dev, int panic)
 {
-	return mlx4_cmd(dev, 0, 0, panic, MLX4_CMD_CLOSE_HCA, 1000,
-			MLX4_CMD_NATIVE);
+	return mlx4_cmd(dev, 0, 0, panic, MLX4_CMD_CLOSE_HCA,
+			MLX4_CMD_TIME_CLASS_C, MLX4_CMD_NATIVE);
 }
 
 struct mlx4_config_dev {
@@ -1883,7 +1883,8 @@ int mlx4_SET_ICM_SIZE(struct mlx4_dev *dev, u64 icm_size, u64 *aux_pages)
 int mlx4_NOP(struct mlx4_dev *dev)
 {
 	/* Input modifier of 0x1f means "finish as soon as possible." */
-	return mlx4_cmd(dev, 0, 0x1f, 0, MLX4_CMD_NOP, 100, MLX4_CMD_NATIVE);
+	return mlx4_cmd(dev, 0, 0x1f, 0, MLX4_CMD_NOP, MLX4_CMD_TIME_CLASS_A,
+			MLX4_CMD_NATIVE);
 }
 
 int mlx4_get_phys_port_id(struct mlx4_dev *dev)
diff --git a/drivers/net/ethernet/mellanox/mlx4/mr.c b/drivers/net/ethernet/mellanox/mlx4/mr.c
index 0558ddd..cca0cea 100644
--- a/drivers/net/ethernet/mellanox/mlx4/mr.c
+++ b/drivers/net/ethernet/mellanox/mlx4/mr.c
@@ -991,7 +991,7 @@ EXPORT_SYMBOL_GPL(mlx4_fmr_free);
 
 int mlx4_SYNC_TPT(struct mlx4_dev *dev)
 {
-	return mlx4_cmd(dev, 0, 0, 0, MLX4_CMD_SYNC_TPT, 1000,
-			MLX4_CMD_NATIVE);
+	return mlx4_cmd(dev, 0, 0, 0, MLX4_CMD_SYNC_TPT,
+			MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
 }
 EXPORT_SYMBOL_GPL(mlx4_SYNC_TPT);
diff --git a/include/linux/mlx4/cmd.h b/include/linux/mlx4/cmd.h
index 0a46d41..d340d46 100644
--- a/include/linux/mlx4/cmd.h
+++ b/include/linux/mlx4/cmd.h
@@ -164,9 +164,9 @@ enum {
 };
 
 enum {
-	MLX4_CMD_TIME_CLASS_A	= 10000,
-	MLX4_CMD_TIME_CLASS_B	= 10000,
-	MLX4_CMD_TIME_CLASS_C	= 10000,
+	MLX4_CMD_TIME_CLASS_A	= 60000,
+	MLX4_CMD_TIME_CLASS_B	= 60000,
+	MLX4_CMD_TIME_CLASS_C	= 60000,
 };
 
 enum {
-- 
1.9.1