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152 lines
4.2 KiB
152 lines
4.2 KiB
/*
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* Copyright 2014 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <linux/module.h>
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#include <linux/sched.h>
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#include <linux/moduleparam.h>
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#include <linux/device.h>
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#include "kfd_priv.h"
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#define KFD_DRIVER_AUTHOR "AMD Inc. and others"
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#define KFD_DRIVER_DESC "Standalone HSA driver for AMD's GPUs"
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#define KFD_DRIVER_DATE "20150421"
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#define KFD_DRIVER_MAJOR 0
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#define KFD_DRIVER_MINOR 7
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#define KFD_DRIVER_PATCHLEVEL 2
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static const struct kgd2kfd_calls kgd2kfd = {
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.exit = kgd2kfd_exit,
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.probe = kgd2kfd_probe,
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.device_init = kgd2kfd_device_init,
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.device_exit = kgd2kfd_device_exit,
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.interrupt = kgd2kfd_interrupt,
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.suspend = kgd2kfd_suspend,
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.resume = kgd2kfd_resume,
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};
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int sched_policy = KFD_SCHED_POLICY_HWS;
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module_param(sched_policy, int, 0444);
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MODULE_PARM_DESC(sched_policy,
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"Scheduling policy (0 = HWS (Default), 1 = HWS without over-subscription, 2 = Non-HWS (Used for debugging only)");
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int max_num_of_queues_per_device = KFD_MAX_NUM_OF_QUEUES_PER_DEVICE_DEFAULT;
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module_param(max_num_of_queues_per_device, int, 0444);
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MODULE_PARM_DESC(max_num_of_queues_per_device,
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"Maximum number of supported queues per device (1 = Minimum, 4096 = default)");
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int send_sigterm;
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module_param(send_sigterm, int, 0444);
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MODULE_PARM_DESC(send_sigterm,
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"Send sigterm to HSA process on unhandled exception (0 = disable, 1 = enable)");
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static int amdkfd_init_completed;
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int kgd2kfd_init(unsigned int interface_version,
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const struct kgd2kfd_calls **g2f)
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{
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if (!amdkfd_init_completed)
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return -EPROBE_DEFER;
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/*
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* Only one interface version is supported,
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* no kfd/kgd version skew allowed.
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*/
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if (interface_version != KFD_INTERFACE_VERSION)
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return -EINVAL;
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*g2f = &kgd2kfd;
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return 0;
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}
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EXPORT_SYMBOL(kgd2kfd_init);
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void kgd2kfd_exit(void)
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{
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}
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static int __init kfd_module_init(void)
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{
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int err;
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/* Verify module parameters */
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if ((sched_policy < KFD_SCHED_POLICY_HWS) ||
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(sched_policy > KFD_SCHED_POLICY_NO_HWS)) {
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pr_err("sched_policy has invalid value\n");
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return -1;
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}
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/* Verify module parameters */
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if ((max_num_of_queues_per_device < 1) ||
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(max_num_of_queues_per_device >
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KFD_MAX_NUM_OF_QUEUES_PER_DEVICE)) {
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pr_err("max_num_of_queues_per_device must be between 1 to KFD_MAX_NUM_OF_QUEUES_PER_DEVICE\n");
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return -1;
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}
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err = kfd_pasid_init();
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if (err < 0)
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return err;
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err = kfd_chardev_init();
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if (err < 0)
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goto err_ioctl;
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err = kfd_topology_init();
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if (err < 0)
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goto err_topology;
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kfd_process_create_wq();
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amdkfd_init_completed = 1;
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dev_info(kfd_device, "Initialized module\n");
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return 0;
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err_topology:
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kfd_chardev_exit();
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err_ioctl:
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kfd_pasid_exit();
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return err;
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}
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static void __exit kfd_module_exit(void)
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{
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amdkfd_init_completed = 0;
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kfd_process_destroy_wq();
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kfd_topology_shutdown();
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kfd_chardev_exit();
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kfd_pasid_exit();
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dev_info(kfd_device, "Removed module\n");
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}
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module_init(kfd_module_init);
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module_exit(kfd_module_exit);
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MODULE_AUTHOR(KFD_DRIVER_AUTHOR);
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MODULE_DESCRIPTION(KFD_DRIVER_DESC);
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MODULE_LICENSE("GPL and additional rights");
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MODULE_VERSION(__stringify(KFD_DRIVER_MAJOR) "."
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__stringify(KFD_DRIVER_MINOR) "."
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__stringify(KFD_DRIVER_PATCHLEVEL));
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