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      1 /*	$NetBSD: kfd_module.c,v 1.3 2021/12/18 23:44:59 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2014 Advanced Micro Devices, Inc.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in
     14  * all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     22  * OTHER DEALINGS IN THE SOFTWARE.
     23  */
     24 
     25 #include <sys/cdefs.h>
     26 __KERNEL_RCSID(0, "$NetBSD: kfd_module.c,v 1.3 2021/12/18 23:44:59 riastradh Exp $");
     27 
     28 #include <linux/sched.h>
     29 #include <linux/device.h>
     30 #include "kfd_priv.h"
     31 #include "amdgpu_amdkfd.h"
     32 
     33 static int kfd_init(void)
     34 {
     35 	int err;
     36 
     37 	/* Verify module parameters */
     38 	if ((sched_policy < KFD_SCHED_POLICY_HWS) ||
     39 		(sched_policy > KFD_SCHED_POLICY_NO_HWS)) {
     40 		pr_err("sched_policy has invalid value\n");
     41 		return -EINVAL;
     42 	}
     43 
     44 	/* Verify module parameters */
     45 	if ((max_num_of_queues_per_device < 1) ||
     46 		(max_num_of_queues_per_device >
     47 			KFD_MAX_NUM_OF_QUEUES_PER_DEVICE)) {
     48 		pr_err("max_num_of_queues_per_device must be between 1 to KFD_MAX_NUM_OF_QUEUES_PER_DEVICE\n");
     49 		return -EINVAL;
     50 	}
     51 
     52 	err = kfd_chardev_init();
     53 	if (err < 0)
     54 		goto err_ioctl;
     55 
     56 	err = kfd_topology_init();
     57 	if (err < 0)
     58 		goto err_topology;
     59 
     60 	err = kfd_process_create_wq();
     61 	if (err < 0)
     62 		goto err_create_wq;
     63 
     64 	/* Ignore the return value, so that we can continue
     65 	 * to init the KFD, even if procfs isn't craated
     66 	 */
     67 	kfd_procfs_init();
     68 
     69 	kfd_debugfs_init();
     70 
     71 	return 0;
     72 
     73 err_create_wq:
     74 	kfd_topology_shutdown();
     75 err_topology:
     76 	kfd_chardev_exit();
     77 err_ioctl:
     78 	return err;
     79 }
     80 
     81 static void kfd_exit(void)
     82 {
     83 	kfd_debugfs_fini();
     84 	kfd_process_destroy_wq();
     85 	kfd_procfs_shutdown();
     86 	kfd_topology_shutdown();
     87 	kfd_chardev_exit();
     88 }
     89 
     90 int kgd2kfd_init(void)
     91 {
     92 	return kfd_init();
     93 }
     94 
     95 void kgd2kfd_exit(void)
     96 {
     97 	kfd_exit();
     98 }
     99