net/mlx5: Read timeout values from init segment

Replace hard coded timeouts with values stored in firmware's init
segment. Timeouts are read from init segment during driver load. If init
segment timeouts are not supported then fallback to hard coded defaults
instead. Also move pre initialization timeouts which cannot be read from
firmware to the new mechanism.

Signed-off-by: Amir Tzin <amirtz@mellanox.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

1 files changed, 22 insertions, 16 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c
index 65313448a47c..b4893eac6ed6 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c
@@ -60,6 +60,7 @@
 #include "devlink.h"
 #include "fw_reset.h"
 #include "lib/mlx5.h"
+#include "lib/tout.h"
 #include "fpga/core.h"
 #include "fpga/ipsec.h"
 #include "accel/ipsec.h"
@@ -176,11 +177,6 @@ static struct mlx5_profile profile[] = {
 	},
 };
 
-#define FW_INIT_TIMEOUT_MILI		2000
-#define FW_INIT_WAIT_MS			2
-#define FW_PRE_INIT_TIMEOUT_MILI	120000
-#define FW_INIT_WARN_MESSAGE_INTERVAL	20000
-
 static int fw_initializing(struct mlx5_core_dev *dev)
 {
 	return ioread32be(&dev->iseg->initializing) >> 31;
@@ -193,8 +189,6 @@ static int wait_fw_init(struct mlx5_core_dev *dev, u32 max_wait_mili,
 	unsigned long end = jiffies + msecs_to_jiffies(max_wait_mili);
 	int err = 0;
 
-	BUILD_BUG_ON(FW_PRE_INIT_TIMEOUT_MILI < FW_INIT_WARN_MESSAGE_INTERVAL);
-
 	while (fw_initializing(dev)) {
 		if (time_after(jiffies, end)) {
 			err = -EBUSY;
@@ -205,7 +199,7 @@ static int wait_fw_init(struct mlx5_core_dev *dev, u32 max_wait_mili,
 				       jiffies_to_msecs(end - warn) / 1000);
 			warn = jiffies + msecs_to_jiffies(warn_time_mili);
 		}
-		msleep(FW_INIT_WAIT_MS);
+		msleep(mlx5_tout_ms(dev, FW_PRE_INIT_WAIT));
 	}
 
 	return err;
@@ -975,25 +969,34 @@ static int mlx5_function_setup(struct mlx5_core_dev *dev, bool boot)
 	if (mlx5_core_is_pf(dev))
 		pcie_print_link_status(dev->pdev);
 
+	err = mlx5_tout_init(dev);
+	if (err) {
+		mlx5_core_err(dev, "Failed initializing timeouts, aborting\n");
+		return err;
+	}
+
 	/* wait for firmware to accept initialization segments configurations
 	 */
-	err = wait_fw_init(dev, FW_PRE_INIT_TIMEOUT_MILI, FW_INIT_WARN_MESSAGE_INTERVAL);
+	err = wait_fw_init(dev, mlx5_tout_ms(dev, FW_PRE_INIT_TIMEOUT),
+			   mlx5_tout_ms(dev, FW_PRE_INIT_WARN_MESSAGE_INTERVAL));
 	if (err) {
-		mlx5_core_err(dev, "Firmware over %d MS in pre-initializing state, aborting\n",
-			      FW_PRE_INIT_TIMEOUT_MILI);
-		return err;
+		mlx5_core_err(dev, "Firmware over %llu MS in pre-initializing state, aborting\n",
+			      mlx5_tout_ms(dev, FW_PRE_INIT_TIMEOUT));
+		goto err_tout_cleanup;
 	}
 
 	err = mlx5_cmd_init(dev);
 	if (err) {
 		mlx5_core_err(dev, "Failed initializing command interface, aborting\n");
-		return err;
+		goto err_tout_cleanup;
 	}
 
-	err = wait_fw_init(dev, FW_INIT_TIMEOUT_MILI, 0);
+	mlx5_tout_query_iseg(dev);
+
+	err = wait_fw_init(dev, mlx5_tout_ms(dev, FW_INIT), 0);
 	if (err) {
-		mlx5_core_err(dev, "Firmware over %d MS in initializing state, aborting\n",
-			      FW_INIT_TIMEOUT_MILI);
+		mlx5_core_err(dev, "Firmware over %llu MS in initializing state, aborting\n",
+			      mlx5_tout_ms(dev, FW_INIT));
 		goto err_cmd_cleanup;
 	}
 
@@ -1062,6 +1065,8 @@ err_disable_hca:
 err_cmd_cleanup:
 	mlx5_cmd_set_state(dev, MLX5_CMDIF_STATE_DOWN);
 	mlx5_cmd_cleanup(dev);
+err_tout_cleanup:
+	mlx5_tout_cleanup(dev);
 
 	return err;
 }
@@ -1080,6 +1085,7 @@ static int mlx5_function_teardown(struct mlx5_core_dev *dev, bool boot)
 	mlx5_core_disable_hca(dev, 0);
 	mlx5_cmd_set_state(dev, MLX5_CMDIF_STATE_DOWN);
 	mlx5_cmd_cleanup(dev);
+	mlx5_tout_cleanup(dev);
 
 	return 0;
 }