drivers/media/platform/mediatek/vcodec/vdec_msg_queue.c - third_party/linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (c) 2021 MediaTek Inc.
  * Author: Yunfei Dong <yunfei.dong@mediatek.com>
  */

 #include <linux/freezer.h>
 #include <linux/interrupt.h>
 #include <linux/kthread.h>

 #include "mtk_vcodec_dec_pm.h"
 #include "mtk_vcodec_drv.h"
 #include "vdec_msg_queue.h"

 #define VDEC_MSG_QUEUE_TIMEOUT_MS 1500

 /* the size used to store lat slice header information */
 #define VDEC_LAT_SLICE_HEADER_SZ    (640 * SZ_1K)

 /* the size used to store avc error information */
 #define VDEC_ERR_MAP_SZ_AVC         (17 * SZ_1K)

 /* core will read the trans buffer which decoded by lat to decode again.
  * The trans buffer size of FHD and 4K bitstreams are different.
  */
 static int vde_msg_queue_get_trans_size(int width, int height)
 {
 	if (width > 1920 || height > 1088)
 		return 30 * SZ_1M;
 	else
 		return 6 * SZ_1M;
 }

 void vdec_msg_queue_init_ctx(struct vdec_msg_queue_ctx *ctx, int hardware_index)
 {
 	init_waitqueue_head(&ctx->ready_to_use);
 	INIT_LIST_HEAD(&ctx->ready_queue);
 	spin_lock_init(&ctx->ready_lock);
 	ctx->ready_num = 0;
 	ctx->hardware_index = hardware_index;
 }

 static struct list_head *vdec_get_buf_list(int hardware_index, struct vdec_lat_buf *buf)
 {
 	switch (hardware_index) {
 	case MTK_VDEC_CORE:
 		return &buf->core_list;
 	case MTK_VDEC_LAT0:
 		return &buf->lat_list;
 	default:
 		return NULL;
 	}
 }

 int vdec_msg_queue_qbuf(struct vdec_msg_queue_ctx *msg_ctx, struct vdec_lat_buf *buf)
 {
 	struct list_head *head;

 	head = vdec_get_buf_list(msg_ctx->hardware_index, buf);
 	if (!head) {
 		mtk_v4l2_err("fail to qbuf: %d", msg_ctx->hardware_index);
 		return -EINVAL;
 	}

 	spin_lock(&msg_ctx->ready_lock);
 	list_add_tail(head, &msg_ctx->ready_queue);
 	msg_ctx->ready_num++;

 	if (msg_ctx->hardware_index != MTK_VDEC_CORE)
 		wake_up_all(&msg_ctx->ready_to_use);
 	else
 		queue_work(buf->ctx->dev->core_workqueue,
 			   &buf->ctx->msg_queue.core_work);

 	mtk_v4l2_debug(3, "enqueue buf type: %d addr: 0x%p num: %d",
 		       msg_ctx->hardware_index, buf, msg_ctx->ready_num);
 	spin_unlock(&msg_ctx->ready_lock);

 	return 0;
 }

 static bool vdec_msg_queue_wait_event(struct vdec_msg_queue_ctx *msg_ctx)
 {
 	int ret;

 	ret = wait_event_timeout(msg_ctx->ready_to_use,
 				 !list_empty(&msg_ctx->ready_queue),
 				 msecs_to_jiffies(VDEC_MSG_QUEUE_TIMEOUT_MS));
 	if (!ret)
 		return false;

 	return true;
 }

 struct vdec_lat_buf *vdec_msg_queue_dqbuf(struct vdec_msg_queue_ctx *msg_ctx)
 {
 	struct vdec_lat_buf *buf;
 	struct list_head *head;
 	int ret;

 	spin_lock(&msg_ctx->ready_lock);
 	if (list_empty(&msg_ctx->ready_queue)) {
 		mtk_v4l2_debug(3, "queue is NULL, type:%d num: %d",
 			       msg_ctx->hardware_index, msg_ctx->ready_num);
 		spin_unlock(&msg_ctx->ready_lock);

 		if (msg_ctx->hardware_index == MTK_VDEC_CORE)
 			return NULL;

 		ret = vdec_msg_queue_wait_event(msg_ctx);
 		if (!ret)
 			return NULL;
 		spin_lock(&msg_ctx->ready_lock);
 	}

 	if (msg_ctx->hardware_index == MTK_VDEC_CORE)
 		buf = list_first_entry(&msg_ctx->ready_queue,
 				       struct vdec_lat_buf, core_list);
 	else
 		buf = list_first_entry(&msg_ctx->ready_queue,
 				       struct vdec_lat_buf, lat_list);

 	head = vdec_get_buf_list(msg_ctx->hardware_index, buf);
 	if (!head) {
 		spin_unlock(&msg_ctx->ready_lock);
 		mtk_v4l2_err("fail to dqbuf: %d", msg_ctx->hardware_index);
 		return NULL;
 	}
 	list_del(head);

 	msg_ctx->ready_num--;
 	mtk_v4l2_debug(3, "dqueue buf type:%d addr: 0x%p num: %d",
 		       msg_ctx->hardware_index, buf, msg_ctx->ready_num);
 	spin_unlock(&msg_ctx->ready_lock);

 	return buf;
 }

 void vdec_msg_queue_update_ube_rptr(struct vdec_msg_queue *msg_queue, uint64_t ube_rptr)
 {
 	spin_lock(&msg_queue->lat_ctx.ready_lock);
 	msg_queue->wdma_rptr_addr = ube_rptr;
 	mtk_v4l2_debug(3, "update ube rprt (0x%llx)", ube_rptr);
 	spin_unlock(&msg_queue->lat_ctx.ready_lock);
 }

 void vdec_msg_queue_update_ube_wptr(struct vdec_msg_queue *msg_queue, uint64_t ube_wptr)
 {
 	spin_lock(&msg_queue->lat_ctx.ready_lock);
 	msg_queue->wdma_wptr_addr = ube_wptr;
 	mtk_v4l2_debug(3, "update ube wprt: (0x%llx 0x%llx) offset: 0x%llx",
 		       msg_queue->wdma_rptr_addr, msg_queue->wdma_wptr_addr,
 		       ube_wptr);
 	spin_unlock(&msg_queue->lat_ctx.ready_lock);
 }

 bool vdec_msg_queue_wait_lat_buf_full(struct vdec_msg_queue *msg_queue)
 {
 	long timeout_jiff;
 	int ret;

 	timeout_jiff = msecs_to_jiffies(1000 * (NUM_BUFFER_COUNT + 2));
 	ret = wait_event_timeout(msg_queue->lat_ctx.ready_to_use,
 				 msg_queue->lat_ctx.ready_num == NUM_BUFFER_COUNT,
 				 timeout_jiff);
 	if (ret) {
 		mtk_v4l2_debug(3, "success to get lat buf: %d",
 			       msg_queue->lat_ctx.ready_num);
 		return true;
 	}
 	mtk_v4l2_err("failed with lat buf isn't full: %d",
 		     msg_queue->lat_ctx.ready_num);
 	return false;
 }

 void vdec_msg_queue_deinit(struct vdec_msg_queue *msg_queue,
 			   struct mtk_vcodec_ctx *ctx)
 {
 	struct vdec_lat_buf *lat_buf;
 	struct mtk_vcodec_mem *mem;
 	int i;

 	mem = &msg_queue->wdma_addr;
 	if (mem->va)
 		mtk_vcodec_mem_free(ctx, mem);
 	for (i = 0; i < NUM_BUFFER_COUNT; i++) {
 		lat_buf = &msg_queue->lat_buf[i];

 		mem = &lat_buf->wdma_err_addr;
 		if (mem->va)
 			mtk_vcodec_mem_free(ctx, mem);

 		mem = &lat_buf->slice_bc_addr;
 		if (mem->va)
 			mtk_vcodec_mem_free(ctx, mem);

 		kfree(lat_buf->private_data);
 	}
 }

 static void vdec_msg_queue_core_work(struct work_struct *work)
 {
 	struct vdec_msg_queue *msg_queue =
 		container_of(work, struct vdec_msg_queue, core_work);
 	struct mtk_vcodec_ctx *ctx =
 		container_of(msg_queue, struct mtk_vcodec_ctx, msg_queue);
 	struct mtk_vcodec_dev *dev = ctx->dev;
 	struct vdec_lat_buf *lat_buf;

 	lat_buf = vdec_msg_queue_dqbuf(&dev->msg_queue_core_ctx);
 	if (!lat_buf)
 		return;

 	ctx = lat_buf->ctx;
 	mtk_vcodec_dec_enable_hardware(ctx, MTK_VDEC_CORE);
 	mtk_vcodec_set_curr_ctx(dev, ctx, MTK_VDEC_CORE);

 	lat_buf->core_decode(lat_buf);

 	mtk_vcodec_set_curr_ctx(dev, NULL, MTK_VDEC_CORE);
 	mtk_vcodec_dec_disable_hardware(ctx, MTK_VDEC_CORE);
 	vdec_msg_queue_qbuf(&ctx->msg_queue.lat_ctx, lat_buf);

 	if (!list_empty(&ctx->msg_queue.lat_ctx.ready_queue)) {
 		mtk_v4l2_debug(3, "re-schedule to decode for core: %d",
 			       dev->msg_queue_core_ctx.ready_num);
 		queue_work(dev->core_workqueue, &msg_queue->core_work);
 	}
 }

 int vdec_msg_queue_init(struct vdec_msg_queue *msg_queue,
 			struct mtk_vcodec_ctx *ctx, core_decode_cb_t core_decode,
 			int private_size)
 {
 	struct vdec_lat_buf *lat_buf;
 	int i, err;

 	/* already init msg queue */
 	if (msg_queue->wdma_addr.size)
 		return 0;

 	vdec_msg_queue_init_ctx(&msg_queue->lat_ctx, MTK_VDEC_LAT0);
 	INIT_WORK(&msg_queue->core_work, vdec_msg_queue_core_work);
 	msg_queue->wdma_addr.size =
 		vde_msg_queue_get_trans_size(ctx->picinfo.buf_w,
 					     ctx->picinfo.buf_h);

 	err = mtk_vcodec_mem_alloc(ctx, &msg_queue->wdma_addr);
 	if (err) {
 		mtk_v4l2_err("failed to allocate wdma_addr buf");
 		return -ENOMEM;
 	}
 	msg_queue->wdma_rptr_addr = msg_queue->wdma_addr.dma_addr;
 	msg_queue->wdma_wptr_addr = msg_queue->wdma_addr.dma_addr;

 	for (i = 0; i < NUM_BUFFER_COUNT; i++) {
 		lat_buf = &msg_queue->lat_buf[i];

 		lat_buf->wdma_err_addr.size = VDEC_ERR_MAP_SZ_AVC;
 		err = mtk_vcodec_mem_alloc(ctx, &lat_buf->wdma_err_addr);
 		if (err) {
 			mtk_v4l2_err("failed to allocate wdma_err_addr buf[%d]", i);
 			goto mem_alloc_err;
 		}

 		lat_buf->slice_bc_addr.size = VDEC_LAT_SLICE_HEADER_SZ;
 		err = mtk_vcodec_mem_alloc(ctx, &lat_buf->slice_bc_addr);
 		if (err) {
 			mtk_v4l2_err("failed to allocate wdma_addr buf[%d]", i);
 			goto mem_alloc_err;
 		}

 		lat_buf->private_data = kzalloc(private_size, GFP_KERNEL);
 		if (!lat_buf->private_data) {
 			err = -ENOMEM;
 			goto mem_alloc_err;
 		}

 		lat_buf->ctx = ctx;
 		lat_buf->core_decode = core_decode;
 		err = vdec_msg_queue_qbuf(&msg_queue->lat_ctx, lat_buf);
 		if (err) {
 			mtk_v4l2_err("failed to qbuf buf[%d]", i);
 			goto mem_alloc_err;
 		}
 	}
 	return 0;

 mem_alloc_err:
 	vdec_msg_queue_deinit(msg_queue, ctx);
 	return err;
 }
	// SPDX-License-Identifier: GPL-2.0
	/*
	* Copyright (c) 2021 MediaTek Inc.
	* Author: Yunfei Dong <yunfei.dong@mediatek.com>
	*/

	#include <linux/freezer.h>
	#include <linux/interrupt.h>
	#include <linux/kthread.h>

	#include "mtk_vcodec_dec_pm.h"
	#include "mtk_vcodec_drv.h"
	#include "vdec_msg_queue.h"

	#define VDEC_MSG_QUEUE_TIMEOUT_MS 1500

	/* the size used to store lat slice header information */
	#define VDEC_LAT_SLICE_HEADER_SZ (640 * SZ_1K)

	/* the size used to store avc error information */
	#define VDEC_ERR_MAP_SZ_AVC (17 * SZ_1K)

	/* core will read the trans buffer which decoded by lat to decode again.
	* The trans buffer size of FHD and 4K bitstreams are different.
	*/
	static int vde_msg_queue_get_trans_size(int width, int height)
	{
	if (width > 1920 \|\| height > 1088)
	return 30 * SZ_1M;
	else
	return 6 * SZ_1M;
	}

	void vdec_msg_queue_init_ctx(struct vdec_msg_queue_ctx *ctx, int hardware_index)
	{
	init_waitqueue_head(&ctx->ready_to_use);
	INIT_LIST_HEAD(&ctx->ready_queue);
	spin_lock_init(&ctx->ready_lock);
	ctx->ready_num = 0;
	ctx->hardware_index = hardware_index;
	}

	static struct list_head vdec_get_buf_list(int hardware_index, struct vdec_lat_buf buf)
	{
	switch (hardware_index) {
	case MTK_VDEC_CORE:
	return &buf->core_list;
	case MTK_VDEC_LAT0:
	return &buf->lat_list;
	default:
	return NULL;
	}
	}

	int vdec_msg_queue_qbuf(struct vdec_msg_queue_ctx msg_ctx, struct vdec_lat_buf buf)
	{
	struct list_head *head;

	head = vdec_get_buf_list(msg_ctx->hardware_index, buf);
	if (!head) {
	mtk_v4l2_err("fail to qbuf: %d", msg_ctx->hardware_index);
	return -EINVAL;
	}

	spin_lock(&msg_ctx->ready_lock);
	list_add_tail(head, &msg_ctx->ready_queue);
	msg_ctx->ready_num++;

	if (msg_ctx->hardware_index != MTK_VDEC_CORE)
	wake_up_all(&msg_ctx->ready_to_use);
	else
	queue_work(buf->ctx->dev->core_workqueue,
	&buf->ctx->msg_queue.core_work);

	mtk_v4l2_debug(3, "enqueue buf type: %d addr: 0x%p num: %d",
	msg_ctx->hardware_index, buf, msg_ctx->ready_num);
	spin_unlock(&msg_ctx->ready_lock);

	return 0;
	}

	static bool vdec_msg_queue_wait_event(struct vdec_msg_queue_ctx *msg_ctx)
	{
	int ret;

	ret = wait_event_timeout(msg_ctx->ready_to_use,
	!list_empty(&msg_ctx->ready_queue),
	msecs_to_jiffies(VDEC_MSG_QUEUE_TIMEOUT_MS));
	if (!ret)
	return false;

	return true;
	}

	struct vdec_lat_buf vdec_msg_queue_dqbuf(struct vdec_msg_queue_ctx msg_ctx)
	{
	struct vdec_lat_buf *buf;
	struct list_head *head;
	int ret;

	spin_lock(&msg_ctx->ready_lock);
	if (list_empty(&msg_ctx->ready_queue)) {
	mtk_v4l2_debug(3, "queue is NULL, type:%d num: %d",
	msg_ctx->hardware_index, msg_ctx->ready_num);
	spin_unlock(&msg_ctx->ready_lock);

	if (msg_ctx->hardware_index == MTK_VDEC_CORE)
	return NULL;

	ret = vdec_msg_queue_wait_event(msg_ctx);
	if (!ret)
	return NULL;
	spin_lock(&msg_ctx->ready_lock);
	}

	if (msg_ctx->hardware_index == MTK_VDEC_CORE)
	buf = list_first_entry(&msg_ctx->ready_queue,
	struct vdec_lat_buf, core_list);
	else
	buf = list_first_entry(&msg_ctx->ready_queue,
	struct vdec_lat_buf, lat_list);

	head = vdec_get_buf_list(msg_ctx->hardware_index, buf);
	if (!head) {
	spin_unlock(&msg_ctx->ready_lock);
	mtk_v4l2_err("fail to dqbuf: %d", msg_ctx->hardware_index);
	return NULL;
	}
	list_del(head);

	msg_ctx->ready_num--;
	mtk_v4l2_debug(3, "dqueue buf type:%d addr: 0x%p num: %d",
	msg_ctx->hardware_index, buf, msg_ctx->ready_num);
	spin_unlock(&msg_ctx->ready_lock);

	return buf;
	}

	void vdec_msg_queue_update_ube_rptr(struct vdec_msg_queue *msg_queue, uint64_t ube_rptr)
	{
	spin_lock(&msg_queue->lat_ctx.ready_lock);
	msg_queue->wdma_rptr_addr = ube_rptr;
	mtk_v4l2_debug(3, "update ube rprt (0x%llx)", ube_rptr);
	spin_unlock(&msg_queue->lat_ctx.ready_lock);
	}

	void vdec_msg_queue_update_ube_wptr(struct vdec_msg_queue *msg_queue, uint64_t ube_wptr)
	{
	spin_lock(&msg_queue->lat_ctx.ready_lock);
	msg_queue->wdma_wptr_addr = ube_wptr;
	mtk_v4l2_debug(3, "update ube wprt: (0x%llx 0x%llx) offset: 0x%llx",
	msg_queue->wdma_rptr_addr, msg_queue->wdma_wptr_addr,
	ube_wptr);
	spin_unlock(&msg_queue->lat_ctx.ready_lock);
	}

	bool vdec_msg_queue_wait_lat_buf_full(struct vdec_msg_queue *msg_queue)
	{
	long timeout_jiff;
	int ret;

	timeout_jiff = msecs_to_jiffies(1000 * (NUM_BUFFER_COUNT + 2));
	ret = wait_event_timeout(msg_queue->lat_ctx.ready_to_use,
	msg_queue->lat_ctx.ready_num == NUM_BUFFER_COUNT,
	timeout_jiff);
	if (ret) {
	mtk_v4l2_debug(3, "success to get lat buf: %d",
	msg_queue->lat_ctx.ready_num);
	return true;
	}
	mtk_v4l2_err("failed with lat buf isn't full: %d",
	msg_queue->lat_ctx.ready_num);
	return false;
	}

	void vdec_msg_queue_deinit(struct vdec_msg_queue *msg_queue,
	struct mtk_vcodec_ctx *ctx)
	{
	struct vdec_lat_buf *lat_buf;
	struct mtk_vcodec_mem *mem;
	int i;

	mem = &msg_queue->wdma_addr;
	if (mem->va)
	mtk_vcodec_mem_free(ctx, mem);
	for (i = 0; i < NUM_BUFFER_COUNT; i++) {
	lat_buf = &msg_queue->lat_buf[i];

	mem = &lat_buf->wdma_err_addr;
	if (mem->va)
	mtk_vcodec_mem_free(ctx, mem);

	mem = &lat_buf->slice_bc_addr;
	if (mem->va)
	mtk_vcodec_mem_free(ctx, mem);

	kfree(lat_buf->private_data);
	}
	}

	static void vdec_msg_queue_core_work(struct work_struct *work)
	{
	struct vdec_msg_queue *msg_queue =
	container_of(work, struct vdec_msg_queue, core_work);
	struct mtk_vcodec_ctx *ctx =
	container_of(msg_queue, struct mtk_vcodec_ctx, msg_queue);
	struct mtk_vcodec_dev *dev = ctx->dev;
	struct vdec_lat_buf *lat_buf;

	lat_buf = vdec_msg_queue_dqbuf(&dev->msg_queue_core_ctx);
	if (!lat_buf)
	return;

	ctx = lat_buf->ctx;
	mtk_vcodec_dec_enable_hardware(ctx, MTK_VDEC_CORE);
	mtk_vcodec_set_curr_ctx(dev, ctx, MTK_VDEC_CORE);

	lat_buf->core_decode(lat_buf);

	mtk_vcodec_set_curr_ctx(dev, NULL, MTK_VDEC_CORE);
	mtk_vcodec_dec_disable_hardware(ctx, MTK_VDEC_CORE);
	vdec_msg_queue_qbuf(&ctx->msg_queue.lat_ctx, lat_buf);

	if (!list_empty(&ctx->msg_queue.lat_ctx.ready_queue)) {
	mtk_v4l2_debug(3, "re-schedule to decode for core: %d",
	dev->msg_queue_core_ctx.ready_num);
	queue_work(dev->core_workqueue, &msg_queue->core_work);
	}
	}

	int vdec_msg_queue_init(struct vdec_msg_queue *msg_queue,
	struct mtk_vcodec_ctx *ctx, core_decode_cb_t core_decode,
	int private_size)
	{
	struct vdec_lat_buf *lat_buf;
	int i, err;

	/* already init msg queue */
	if (msg_queue->wdma_addr.size)
	return 0;

	vdec_msg_queue_init_ctx(&msg_queue->lat_ctx, MTK_VDEC_LAT0);
	INIT_WORK(&msg_queue->core_work, vdec_msg_queue_core_work);
	msg_queue->wdma_addr.size =
	vde_msg_queue_get_trans_size(ctx->picinfo.buf_w,
	ctx->picinfo.buf_h);

	err = mtk_vcodec_mem_alloc(ctx, &msg_queue->wdma_addr);
	if (err) {
	mtk_v4l2_err("failed to allocate wdma_addr buf");
	return -ENOMEM;
	}
	msg_queue->wdma_rptr_addr = msg_queue->wdma_addr.dma_addr;
	msg_queue->wdma_wptr_addr = msg_queue->wdma_addr.dma_addr;

	for (i = 0; i < NUM_BUFFER_COUNT; i++) {
	lat_buf = &msg_queue->lat_buf[i];

	lat_buf->wdma_err_addr.size = VDEC_ERR_MAP_SZ_AVC;
	err = mtk_vcodec_mem_alloc(ctx, &lat_buf->wdma_err_addr);
	if (err) {
	mtk_v4l2_err("failed to allocate wdma_err_addr buf[%d]", i);
	goto mem_alloc_err;
	}

	lat_buf->slice_bc_addr.size = VDEC_LAT_SLICE_HEADER_SZ;
	err = mtk_vcodec_mem_alloc(ctx, &lat_buf->slice_bc_addr);
	if (err) {
	mtk_v4l2_err("failed to allocate wdma_addr buf[%d]", i);
	goto mem_alloc_err;
	}

	lat_buf->private_data = kzalloc(private_size, GFP_KERNEL);
	if (!lat_buf->private_data) {
	err = -ENOMEM;
	goto mem_alloc_err;
	}

	lat_buf->ctx = ctx;
	lat_buf->core_decode = core_decode;
	err = vdec_msg_queue_qbuf(&msg_queue->lat_ctx, lat_buf);
	if (err) {
	mtk_v4l2_err("failed to qbuf buf[%d]", i);
	goto mem_alloc_err;
	}
	}
	return 0;

	mem_alloc_err:
	vdec_msg_queue_deinit(msg_queue, ctx);
	return err;
	}