1 // SPDX-License-Identifier: GPL-2.0 OR MIT 2 /* 3 * Copyright 2014-2022 Advanced Micro Devices, Inc. 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining a 6 * copy of this software and associated documentation files (the "Software"), 7 * to deal in the Software without restriction, including without limitation 8 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 9 * and/or sell copies of the Software, and to permit persons to whom the 10 * Software is furnished to do so, subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice shall be included in 13 * all copies or substantial portions of the Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 21 * OTHER DEALINGS IN THE SOFTWARE. 22 */ 23 24 #include <linux/sched.h> 25 #include <linux/device.h> 26 #include "kfd_priv.h" 27 #include "amdgpu_amdkfd.h" 28 29 static int kfd_init(void) 30 { 31 int err; 32 33 /* Verify module parameters */ 34 if ((sched_policy < KFD_SCHED_POLICY_HWS) || 35 (sched_policy > KFD_SCHED_POLICY_NO_HWS)) { 36 pr_err("sched_policy has invalid value\n"); 37 return -EINVAL; 38 } 39 40 /* Verify module parameters */ 41 if ((max_num_of_queues_per_device < 1) || 42 (max_num_of_queues_per_device > 43 KFD_MAX_NUM_OF_QUEUES_PER_DEVICE)) { 44 pr_err("max_num_of_queues_per_device must be between 1 to KFD_MAX_NUM_OF_QUEUES_PER_DEVICE\n"); 45 return -EINVAL; 46 } 47 48 err = kfd_chardev_init(); 49 if (err < 0) 50 goto err_ioctl; 51 52 err = kfd_topology_init(); 53 if (err < 0) 54 goto err_topology; 55 56 err = kfd_process_create_wq(); 57 if (err < 0) 58 goto err_create_wq; 59 60 /* Ignore the return value, so that we can continue 61 * to init the KFD, even if procfs isn't craated 62 */ 63 kfd_procfs_init(); 64 65 kfd_debugfs_init(); 66 67 return 0; 68 69 err_create_wq: 70 kfd_topology_shutdown(); 71 err_topology: 72 kfd_chardev_exit(); 73 err_ioctl: 74 pr_err("KFD is disabled due to module initialization failure\n"); 75 return err; 76 } 77 78 static void kfd_exit(void) 79 { 80 kfd_debugfs_fini(); 81 kfd_process_destroy_wq(); 82 kfd_procfs_shutdown(); 83 kfd_topology_shutdown(); 84 kfd_chardev_exit(); 85 } 86 87 int kgd2kfd_init(void) 88 { 89 return kfd_init(); 90 } 91 92 void kgd2kfd_exit(void) 93 { 94 kfd_exit(); 95 } 96