linux/drivers/gpu/drm/nouveau/nvkm/falcon/cmdq.c

/*
 * Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
 *
 * 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 "qmgr.h"

static bool
nvkm_falcon_cmdq_has_room(struct nvkm_falcon_cmdq *cmdq, u32 size, bool *rewind)
{ … }

static void
nvkm_falcon_cmdq_push(struct nvkm_falcon_cmdq *cmdq, void *data, u32 size)
{ … }

static void
nvkm_falcon_cmdq_rewind(struct nvkm_falcon_cmdq *cmdq)
{ … }

static int
nvkm_falcon_cmdq_open(struct nvkm_falcon_cmdq *cmdq, u32 size)
{ … }

static void
nvkm_falcon_cmdq_close(struct nvkm_falcon_cmdq *cmdq)
{ … }

static int
nvkm_falcon_cmdq_write(struct nvkm_falcon_cmdq *cmdq, struct nvfw_falcon_cmd *cmd)
{ … }

/* specifies that we want to know the command status in the answer message */
#define CMD_FLAGS_STATUS …
/* specifies that we want an interrupt when the answer message is queued */
#define CMD_FLAGS_INTR …

int
nvkm_falcon_cmdq_send(struct nvkm_falcon_cmdq *cmdq, struct nvfw_falcon_cmd *cmd,
		      nvkm_falcon_qmgr_callback cb, void *priv,
		      unsigned long timeout)
{ … }

void
nvkm_falcon_cmdq_fini(struct nvkm_falcon_cmdq *cmdq)
{ … }

void
nvkm_falcon_cmdq_init(struct nvkm_falcon_cmdq *cmdq,
		      u32 index, u32 offset, u32 size)
{ … }

void
nvkm_falcon_cmdq_del(struct nvkm_falcon_cmdq **pcmdq)
{ … }

int
nvkm_falcon_cmdq_new(struct nvkm_falcon_qmgr *qmgr, const char *name,
		     struct nvkm_falcon_cmdq **pcmdq)
{ … }