svn commit: r347797 - in stable/11/sys/dev/mlx5: . mlx5_fpga mlx5_fpga_tools

Hans Petter Selasky hselasky at FreeBSD.org
Thu May 16 17:11:04 UTC 2019


Author: hselasky
Date: Thu May 16 17:11:02 2019
New Revision: 347797
URL: https://svnweb.freebsd.org/changeset/base/347797

Log:
  MFC r347247:
  Add MLX5_FPGA_RELOAD IOCTL(2) to mlx5fpga.
  
  Submitted by:	kib@
  Sponsored by:	Mellanox Technologies

Modified:
  stable/11/sys/dev/mlx5/mlx5_fpga/mlx5_ifc_fpga.h
  stable/11/sys/dev/mlx5/mlx5_fpga/mlx5fpga_sdk.c
  stable/11/sys/dev/mlx5/mlx5_fpga_tools/mlx5fpga_tools_char.c
  stable/11/sys/dev/mlx5/mlx5io.h
Directory Properties:
  stable/11/   (props changed)

Modified: stable/11/sys/dev/mlx5/mlx5_fpga/mlx5_ifc_fpga.h
==============================================================================
--- stable/11/sys/dev/mlx5/mlx5_fpga/mlx5_ifc_fpga.h	Thu May 16 17:09:06 2019	(r347796)
+++ stable/11/sys/dev/mlx5/mlx5_fpga/mlx5_ifc_fpga.h	Thu May 16 17:11:02 2019	(r347797)
@@ -135,6 +135,7 @@ enum {
 	MLX5_FPGA_CTRL_OPERATION_RESET_SANDBOX       = 0x6,
 	MLX5_FPGA_CTRL_OPERATION_DISCONNECT          = 0x9,
 	MLX5_FPGA_CTRL_OPERATION_CONNECT             = 0xA,
+	MLX5_FPGA_CTRL_OPERATION_RELOAD              = 0xB,
 };
 
 struct mlx5_ifc_fpga_ctrl_bits {

Modified: stable/11/sys/dev/mlx5/mlx5_fpga/mlx5fpga_sdk.c
==============================================================================
--- stable/11/sys/dev/mlx5/mlx5_fpga/mlx5fpga_sdk.c	Thu May 16 17:09:06 2019	(r347796)
+++ stable/11/sys/dev/mlx5/mlx5_fpga/mlx5fpga_sdk.c	Thu May 16 17:11:02 2019	(r347797)
@@ -324,6 +324,45 @@ void mlx5_fpga_device_query(struct mlx5_fpga_device *f
 }
 EXPORT_SYMBOL(mlx5_fpga_device_query);
 
+static int mlx5_fpga_device_reload_cmd(struct mlx5_fpga_device *fdev)
+{
+	struct mlx5_core_dev *mdev = fdev->mdev;
+	unsigned long timeout;
+	unsigned long flags;
+	int err = 0;
+
+	mlx5_fpga_info(fdev, "mlx5/fpga - reload started\n");
+	fdev->fdev_state = MLX5_FDEV_STATE_IN_PROGRESS;
+	reinit_completion(&fdev->load_event);
+	err = mlx5_fpga_ctrl_op(mdev, MLX5_FPGA_CTRL_OPERATION_RELOAD);
+	if (err) {
+		mlx5_fpga_err(fdev, "Failed to request reload: %d\n",
+			      err);
+		goto out;
+	}
+	timeout = jiffies + msecs_to_jiffies(MLX5_FPGA_LOAD_TIMEOUT);
+	err = wait_for_completion_timeout(&fdev->load_event,
+					  timeout - jiffies);
+	if (err < 0) {
+		mlx5_fpga_err(fdev, "Failed waiting for reload: %d\n", err);
+		fdev->fdev_state = MLX5_FDEV_STATE_FAILURE;
+		goto out;
+	}
+	/* Check device loaded successful */
+	err = mlx5_fpga_device_start(mdev);
+	if (err) {
+		mlx5_fpga_err(fdev, "Failed load check for reload: %d\n", err);
+		fdev->fdev_state = MLX5_FDEV_STATE_FAILURE;
+		goto out;
+	}
+	spin_lock_irqsave(&fdev->state_lock, flags);
+	fdev->fdev_state = MLX5_FDEV_STATE_SUCCESS;
+	spin_unlock_irqrestore(&fdev->state_lock, flags);
+	mlx5_fpga_info(fdev, "mlx5/fpga - reload ended\n");
+out:
+	return err;
+}
+
 int mlx5_fpga_device_reload(struct mlx5_fpga_device *fdev,
 			    enum mlx5_fpga_image image)
 {
@@ -350,6 +389,12 @@ int mlx5_fpga_device_reload(struct mlx5_fpga_device *f
 		return err;
 
 	mutex_lock(&mdev->intf_state_mutex);
+
+	if (image == MLX5_FPGA_IMAGE_RELOAD) {
+		err = mlx5_fpga_device_reload_cmd(fdev);
+		goto out;
+	}
+
 	clear_bit(MLX5_INTERFACE_STATE_UP, &mdev->intf_state);
 
 	mlx5_unregister_device(mdev);
@@ -359,7 +404,7 @@ int mlx5_fpga_device_reload(struct mlx5_fpga_device *f
 	fdev->fdev_state = MLX5_FDEV_STATE_IN_PROGRESS;
 	reinit_completion(&fdev->load_event);
 
-	if (image <= MLX5_FPGA_IMAGE_MAX) {
+	if (image <= MLX5_FPGA_IMAGE_FACTORY) {
 		mlx5_fpga_info(fdev, "Loading from flash\n");
 		err = mlx5_fpga_load(mdev, image);
 		if (err) {
@@ -367,7 +412,7 @@ int mlx5_fpga_device_reload(struct mlx5_fpga_device *f
 				      err);
 			goto out;
 		}
-	} else {
+	} else if (image == MLX5_FPGA_IMAGE_RESET) {
 		mlx5_fpga_info(fdev, "Resetting\n");
 		err = mlx5_fpga_ctrl_op(mdev, MLX5_FPGA_CTRL_OPERATION_RESET);
 		if (err) {
@@ -375,6 +420,10 @@ int mlx5_fpga_device_reload(struct mlx5_fpga_device *f
 				      err);
 			goto out;
 		}
+	} else {
+		mlx5_fpga_err(fdev, "Unknown command: %d\n",
+			      image);
+		goto out;
 	}
 
 	timeout = jiffies + msecs_to_jiffies(MLX5_FPGA_LOAD_TIMEOUT);

Modified: stable/11/sys/dev/mlx5/mlx5_fpga_tools/mlx5fpga_tools_char.c
==============================================================================
--- stable/11/sys/dev/mlx5/mlx5_fpga_tools/mlx5fpga_tools_char.c	Thu May 16 17:09:06 2019	(r347796)
+++ stable/11/sys/dev/mlx5/mlx5_fpga_tools/mlx5fpga_tools_char.c	Thu May 16 17:11:02 2019	(r347797)
@@ -225,7 +225,7 @@ tools_char_ioctl(struct cdev *dev, u_long cmd, caddr_t
 		break;
 	case MLX5_FPGA_LOAD:
 		arg = *(int *)data;
-		if (arg > MLX5_FPGA_IMAGE_MAX) {
+		if (arg > MLX5_FPGA_IMAGE_FACTORY) {
 			dev_err(mlx5_fpga_dev(fdev),
 				"unknown image type %u\n", arg);
 			err = EINVAL;
@@ -234,11 +234,14 @@ tools_char_ioctl(struct cdev *dev, u_long cmd, caddr_t
 		err = mlx5_fpga_device_reload(fdev, arg);
 		break;
 	case MLX5_FPGA_RESET:
-		err = mlx5_fpga_device_reload(fdev, MLX5_FPGA_IMAGE_MAX + 1);
+		err = mlx5_fpga_device_reload(fdev, MLX5_FPGA_IMAGE_RESET);
 		break;
+	case MLX5_FPGA_RELOAD:
+		err = mlx5_fpga_device_reload(fdev, MLX5_FPGA_IMAGE_RELOAD);
+		break;
 	case MLX5_FPGA_IMAGE_SEL:
 		arg = *(int *)data;
-		if (arg > MLX5_FPGA_IMAGE_MAX) {
+		if (arg > MLX5_FPGA_IMAGE_FACTORY) {
 			dev_err(mlx5_fpga_dev(fdev),
 			    "unknown image type %u\n", arg);
 			err = EINVAL;

Modified: stable/11/sys/dev/mlx5/mlx5io.h
==============================================================================
--- stable/11/sys/dev/mlx5/mlx5io.h	Thu May 16 17:09:06 2019	(r347796)
+++ stable/11/sys/dev/mlx5/mlx5io.h	Thu May 16 17:11:02 2019	(r347797)
@@ -67,8 +67,9 @@ enum mlx5_fpga_id {
 enum mlx5_fpga_image {
 	MLX5_FPGA_IMAGE_USER = 0,
 	MLX5_FPGA_IMAGE_FACTORY = 1,
-	MLX5_FPGA_IMAGE_MAX = MLX5_FPGA_IMAGE_FACTORY,
 	MLX5_FPGA_IMAGE_FACTORY_FAILOVER = 2,
+	MLX5_FPGA_IMAGE_RESET = 17,
+	MLX5_FPGA_IMAGE_RELOAD = 18,
 };
 
 enum mlx5_fpga_status {
@@ -135,6 +136,7 @@ struct mlx5_fpga_temperature {
 #define	MLX5_FPGA_CAP		_IOR('m', 0x85, uint32_t[MLX5_FPGA_CAP_ARR_SZ])
 #define	MLX5_FPGA_TEMPERATURE	_IOWR('m', 0x86, struct mlx5_fpga_temperature)
 #define	MLX5_FPGA_CONNECT	_IOWR('m', 0x87, enum mlx5_fpga_connect)
+#define	MLX5_FPGA_RELOAD	_IO('m', 0x88)
 
 #define	MLX5_FPGA_TOOLS_NAME_SUFFIX	"_mlx5_fpga_tools"
 


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