Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Copyright (C) Rockchip Electronics Co.Ltd
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * Author: Felix Zeng <felix.zeng@rock-chips.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #include <linux/file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <linux/dma-fence.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/sync_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include "rknpu_drv.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include "rknpu_job.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include "rknpu_fence.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) static const char *rknpu_fence_get_name(struct dma_fence *fence)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	return DRIVER_NAME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) static const struct dma_fence_ops rknpu_fence_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	.get_driver_name = rknpu_fence_get_name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	.get_timeline_name = rknpu_fence_get_name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) int rknpu_fence_context_alloc(struct rknpu_device *rknpu_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	struct rknpu_fence_context *fence_ctx = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	fence_ctx =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 		devm_kzalloc(rknpu_dev->dev, sizeof(*fence_ctx), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	if (!fence_ctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	fence_ctx->context = dma_fence_context_alloc(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	spin_lock_init(&fence_ctx->spinlock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	rknpu_dev->fence_ctx = fence_ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) int rknpu_fence_alloc(struct rknpu_job *job)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	struct rknpu_fence_context *fence_ctx = job->rknpu_dev->fence_ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	struct dma_fence *fence = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	fence = kzalloc(sizeof(*fence), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	if (!fence)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	dma_fence_init(fence, &rknpu_fence_ops, &fence_ctx->spinlock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 		       fence_ctx->context, ++fence_ctx->seqno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	job->fence = fence;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) int rknpu_fence_get_fd(struct rknpu_job *job)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 	struct sync_file *sync_file = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 	int fence_fd = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 	if (!job->fence)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 	fence_fd = get_unused_fd_flags(O_CLOEXEC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 	if (fence_fd < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 		return fence_fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 	sync_file = sync_file_create(job->fence);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) 	if (!sync_file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 	fd_install(fence_fd, sync_file->file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) 	return fence_fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) }