drivers/gpu/drm/amd/amdkfd/kfd_module.c

   1 /*
   2  * Copyright 2014 Advanced Micro Devices, Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  */
  22
  23 #include <linux/sched.h>
  24 #include <linux/device.h>
  25 #include "kfd_priv.h"
  26 #include "amdgpu_amdkfd.h"
  27
  28 static int kfd_init(void)
  29 {
  30         int err;
  31
  32         /* Verify module parameters */
  33         if ((sched_policy < KFD_SCHED_POLICY_HWS) ||
  34                 (sched_policy > KFD_SCHED_POLICY_NO_HWS)) {
  35                 pr_err("sched_policy has invalid value\n");
  36                 return -EINVAL;
  37         }
  38
  39         /* Verify module parameters */
  40         if ((max_num_of_queues_per_device < 1) ||
  41                 (max_num_of_queues_per_device >
  42                         KFD_MAX_NUM_OF_QUEUES_PER_DEVICE)) {
  43                 pr_err("max_num_of_queues_per_device must be between 1 to KFD_MAX_NUM_OF_QUEUES_PER_DEVICE\n");
  44                 return -EINVAL;
  45         }
  46
  47         err = kfd_chardev_init();
  48         if (err < 0)
  49                 goto err_ioctl;
  50
  51         err = kfd_topology_init();
  52         if (err < 0)
  53                 goto err_topology;
  54
  55         err = kfd_process_create_wq();
  56         if (err < 0)
  57                 goto err_create_wq;
  58
  59         kfd_debugfs_init();
  60
  61         return 0;
  62
  63 err_create_wq:
  64         kfd_topology_shutdown();
  65 err_topology:
  66         kfd_chardev_exit();
  67 err_ioctl:
  68         return err;
  69 }
  70
  71 static void kfd_exit(void)
  72 {
  73         kfd_debugfs_fini();
  74         kfd_process_destroy_wq();
  75         kfd_topology_shutdown();
  76         kfd_chardev_exit();
  77 }
  78
  79 int kgd2kfd_init()
  80 {
  81         return kfd_init();
  82 }
  83
  84 void kgd2kfd_exit(void)
  85 {
  86         kfd_exit();
  87 }