linux/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c

// SPDX-License-Identifier: GPL-2.0 OR MIT
/*
 * Copyright 2014-2022 Advanced Micro Devices, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 */

#include <linux/slab.h>
#include <linux/mutex.h>
#include "kfd_device_queue_manager.h"
#include "kfd_kernel_queue.h"
#include "kfd_priv.h"

static inline void inc_wptr(unsigned int *wptr, unsigned int increment_bytes,
				unsigned int buffer_size_bytes)
{ … }

static void pm_calc_rlib_size(struct packet_manager *pm,
				unsigned int *rlib_size,
				bool *over_subscription)
{ … }

static int pm_allocate_runlist_ib(struct packet_manager *pm,
				unsigned int **rl_buffer,
				uint64_t *rl_gpu_buffer,
				unsigned int *rl_buffer_size,
				bool *is_over_subscription)
{ … }

static int pm_create_runlist_ib(struct packet_manager *pm,
				struct list_head *queues,
				uint64_t *rl_gpu_addr,
				size_t *rl_size_bytes)
{ … }

int pm_init(struct packet_manager *pm, struct device_queue_manager *dqm)
{ … }

void pm_uninit(struct packet_manager *pm)
{ … }

int pm_send_set_resources(struct packet_manager *pm,
				struct scheduling_resources *res)
{ … }

int pm_send_runlist(struct packet_manager *pm, struct list_head *dqm_queues)
{ … }

int pm_send_query_status(struct packet_manager *pm, uint64_t fence_address,
			uint64_t fence_value)
{ … }

int pm_update_grace_period(struct packet_manager *pm, uint32_t grace_period)
{ … }

int pm_send_unmap_queue(struct packet_manager *pm,
			enum kfd_unmap_queues_filter filter,
			uint32_t filter_param, bool reset)
{ … }

void pm_release_ib(struct packet_manager *pm)
{ … }

#if defined(CONFIG_DEBUG_FS)

int pm_debugfs_runlist(struct seq_file *m, void *data)
{ … }

int pm_debugfs_hang_hws(struct packet_manager *pm)
{ … }


#endif