FreeBSD/Linux Kernel Cross Reference
sys/dev/mlx5/mlx5_fpga_tools/mlx5fpga_tools_main.c

     /*-
      * Copyright (c) 2017 Mellanox Technologies. All rights reserved.
      *
      * This software is available to you under a choice of one of two
      * licenses.  You may choose to be licensed under the terms of the GNU
      * General Public License (GPL) Version 2, available from the file
      * COPYING in the main directory of this source tree, or the
      * OpenIB.org BSD license below:
      *
     *     Redistribution and use in source and binary forms, with or
     *     without modification, are permitted provided that the following
     *     conditions are met:
     *
     *      - Redistributions of source code must retain the above
     *        copyright notice, this list of conditions and the following
     *        disclaimer.
     *
     *      - Redistributions in binary form must reproduce the above
     *        copyright notice, this list of conditions and the following
     *        disclaimer in the documentation and/or other materials
     *        provided with the distribution.
     *
     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
     * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
     * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
     * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     * SOFTWARE.
     *
     * $FreeBSD$
     */
    
    #include <linux/module.h>
    #include <dev/mlx5/mlx5_fpga_tools/tools.h>
    #include <dev/mlx5/mlx5_fpga_tools/tools_char.h>
    
    #if (__FreeBSD_version >= 1100000)
    MODULE_DEPEND(mlx5fpga_tools, linuxkpi, 1, 1, 1);
    #endif
    MODULE_DEPEND(mlx5fpga_tools, mlx5, 1, 1, 1);
    MODULE_DEPEND(mlx5fpga_tools, mlx5fpga, 1, 1, 1);
    MODULE_VERSION(mlx5fpga_tools, 1);
    
    static void mlx5_fpga_tools_create(struct mlx5_fpga_device *fdev);
    static int mlx5_fpga_tools_add(struct mlx5_fpga_device *fdev, u32 vid, u16 pid);
    static void mlx5_fpga_tools_remove(struct mlx5_fpga_device *fdev);
    static void mlx5_fpga_tools_destroy(struct mlx5_fpga_device *fdev);
    
    struct mlx5_fpga_tools_dev *mlx5_fpga_tools_alloc(struct mlx5_fpga_device *fdev);
    void mlx5_fpga_tools_free(struct mlx5_fpga_tools_dev *tdev);
    
    static struct mlx5_fpga_client mlx5_fpga_tools_client = {
            .name = MLX5_FPGA_TOOLS_DRIVER_NAME,
            .create = mlx5_fpga_tools_create,
            .add = mlx5_fpga_tools_add,
            .remove = mlx5_fpga_tools_remove,
            .destroy = mlx5_fpga_tools_destroy,
    };
    
    struct mlx5_fpga_tools_dev *mlx5_fpga_tools_alloc(struct mlx5_fpga_device *fdev)
    {
            int ret;
            struct mlx5_fpga_tools_dev *tdev;
    
            tdev = kzalloc(sizeof(*tdev), GFP_KERNEL);
            if (!tdev)
                    goto out;
    
            tdev->fdev = fdev;
            sx_init(&tdev->lock, "mlx5fpgat");
            ret = mlx5_fpga_tools_char_add_one(tdev);
            if (ret)
                    goto err_free;
    
            goto out;
    
    err_free:
            kfree(tdev);
            tdev = NULL;
    
    out:
            return tdev;
    }
    
    void mlx5_fpga_tools_free(struct mlx5_fpga_tools_dev *tdev)
    {
            mlx5_fpga_tools_char_remove_one(tdev);
            kfree(tdev);
    }
    
    static void mlx5_fpga_tools_create(struct mlx5_fpga_device *fdev)
    {
            struct mlx5_fpga_tools_dev *dev = NULL;
    
            dev_dbg(mlx5_fpga_dev(fdev), "tools_create\n");
    
            dev = mlx5_fpga_tools_alloc(fdev);
           if (!dev)
                   return;
   
           mlx5_fpga_client_data_set(fdev, &mlx5_fpga_tools_client, dev);
   }
   
   static int mlx5_fpga_tools_add(struct mlx5_fpga_device *fdev, u32 vid, u16 pid)
   {
           return 0;
   }
   
   static void mlx5_fpga_tools_remove(struct mlx5_fpga_device *fdev)
   {
   }
   
   static void mlx5_fpga_tools_destroy(struct mlx5_fpga_device *fdev)
   {
           struct mlx5_fpga_tools_dev *dev;
   
           dev_dbg(mlx5_fpga_dev(fdev), "tools_destroy\n");
   
           dev = mlx5_fpga_client_data_get(fdev, &mlx5_fpga_tools_client);
           if (dev)
                   mlx5_fpga_tools_free(dev);
   }
   
   static int __init mlx5_fpga_tools_init(void)
   {
           int ret = mlx5_fpga_tools_char_init();
   
           if (ret)
                   return ret;
           mlx5_fpga_client_register(&mlx5_fpga_tools_client);
           return 0;
   }
   
   static void __exit mlx5_fpga_tools_exit(void)
   {
           mlx5_fpga_client_unregister(&mlx5_fpga_tools_client);
           mlx5_fpga_tools_char_deinit();
   }
   
   module_init_order(mlx5_fpga_tools_init, SI_ORDER_SECOND);
   module_exit_order(mlx5_fpga_tools_exit, SI_ORDER_SECOND);

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