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 /* Ignore the return value, so that we can continue 60 * to init the KFD, even if procfs isn't craated 61 */ 62 kfd_procfs_init(); 63 64 kfd_debugfs_init(); 65 66 return 0; 67 68 err_create_wq: 69 kfd_topology_shutdown(); 70 err_topology: 71 kfd_chardev_exit(); 72 err_ioctl: 73 pr_err("KFD is disabled due to module initialization failure\n"); 74 return err; 75 } 76 77 static void kfd_exit(void) 78 { 79 kfd_debugfs_fini(); 80 kfd_process_destroy_wq(); 81 kfd_procfs_shutdown(); 82 kfd_topology_shutdown(); 83 kfd_chardev_exit(); 84 } 85 86 int kgd2kfd_init(void) 87 { 88 return kfd_init(); 89 } 90 91 void kgd2kfd_exit(void) 92 { 93 kfd_exit(); 94 } 95