[PATCH v2 3/4] drm/etnaviv: move fence allocation out of etnaviv_gpu_submit()

[Philipp Zabel]

The next patch will need the dma_fence to create the sync_file in
etnaviv_ioctl_gem_submit, in case an out_fence_fd is requested.

Signed-off-by: Philipp Zabel <p.zabel at pengutronix.de>
Reviewed-by: Gustavo Padovan <gustavo.padovan at collabora.com>
---
 drivers/gpu/drm/etnaviv/etnaviv_gem.h        |  3 ++-
 drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c |  8 +++++++-
 drivers/gpu/drm/etnaviv/etnaviv_gpu.c        | 21 ++++++---------------
 drivers/gpu/drm/etnaviv/etnaviv_gpu.h        |  1 +
 4 files changed, 16 insertions(+), 17 deletions(-)

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem.h b/drivers/gpu/drm/etnaviv/etnaviv_gem.h
index 120410d67eb5b..c4a091e874269 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem.h
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem.h
@@ -20,6 +20,7 @@
 #include <linux/reservation.h>
 #include "etnaviv_drv.h"
 
+struct dma_fence;
 struct etnaviv_gem_ops;
 struct etnaviv_gem_object;
 
@@ -104,7 +105,7 @@ struct etnaviv_gem_submit {
 	struct drm_device *dev;
 	struct etnaviv_gpu *gpu;
 	struct ww_acquire_ctx ticket;
-	u32 fence;
+	struct dma_fence *fence;
 	unsigned int nr_bos;
 	struct etnaviv_gem_submit_bo bos[0];
 	u32 flags;
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
index fb8d5befbf4f1..be88411de35a4 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
@@ -431,11 +431,17 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
 	memcpy(cmdbuf->vaddr, stream, args->stream_size);
 	cmdbuf->user_size = ALIGN(args->stream_size, 8);
 
+	submit->fence = etnaviv_gpu_fence_alloc(gpu);
+	if (!submit->fence) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
 	ret = etnaviv_gpu_submit(gpu, submit, cmdbuf);
 	if (ret == 0)
 		cmdbuf = NULL;
 
-	args->fence = submit->fence;
+	args->fence = submit->fence->seqno;
 
 out:
 	submit_unpin_objects(submit);
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
index 51d52c72aef17..a439700cc577f 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
@@ -1047,7 +1047,7 @@ static const struct dma_fence_ops etnaviv_fence_ops = {
 	.release = etnaviv_fence_release,
 };
 
-static struct dma_fence *etnaviv_gpu_fence_alloc(struct etnaviv_gpu *gpu)
+struct dma_fence *etnaviv_gpu_fence_alloc(struct etnaviv_gpu *gpu)
 {
 	struct etnaviv_fence *f;
 
@@ -1290,7 +1290,6 @@ void etnaviv_gpu_pm_put(struct etnaviv_gpu *gpu)
 int etnaviv_gpu_submit(struct etnaviv_gpu *gpu,
 	struct etnaviv_gem_submit *submit, struct etnaviv_cmdbuf *cmdbuf)
 {
-	struct dma_fence *fence;
 	unsigned int event, i;
 	int ret;
 
@@ -1314,18 +1313,10 @@ int etnaviv_gpu_submit(struct etnaviv_gpu *gpu,
 		goto out_pm_put;
 	}
 
-	fence = etnaviv_gpu_fence_alloc(gpu);
-	if (!fence) {
-		event_free(gpu, event);
-		ret = -ENOMEM;
-		goto out_pm_put;
-	}
-
 	mutex_lock(&gpu->lock);
 
-	gpu->event[event].fence = fence;
-	submit->fence = fence->seqno;
-	gpu->active_fence = submit->fence;
+	gpu->event[event].fence = submit->fence;
+	gpu->active_fence = submit->fence->seqno;
 
 	if (gpu->lastctx != cmdbuf->ctx) {
 		gpu->mmu->need_flush = true;
@@ -1335,7 +1326,7 @@ int etnaviv_gpu_submit(struct etnaviv_gpu *gpu,
 
 	etnaviv_buffer_queue(gpu, event, cmdbuf);
 
-	cmdbuf->fence = fence;
+	cmdbuf->fence = submit->fence;
 	list_add_tail(&cmdbuf->node, &gpu->active_cmd_list);
 
 	/* We're committed to adding this command buffer, hold a PM reference */
@@ -1351,10 +1342,10 @@ int etnaviv_gpu_submit(struct etnaviv_gpu *gpu,
 
 		if (submit->bos[i].flags & ETNA_SUBMIT_BO_WRITE)
 			reservation_object_add_excl_fence(etnaviv_obj->resv,
-							  fence);
+							  submit->fence);
 		else
 			reservation_object_add_shared_fence(etnaviv_obj->resv,
-							    fence);
+							    submit->fence);
 	}
 	cmdbuf->nr_bos = submit->nr_bos;
 	hangcheck_timer_reset(gpu);
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.h b/drivers/gpu/drm/etnaviv/etnaviv_gpu.h
index dc27c7a039060..20f7191018daf 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.h
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.h
@@ -180,6 +180,7 @@ int etnaviv_gpu_init(struct etnaviv_gpu *gpu);
 int etnaviv_gpu_debugfs(struct etnaviv_gpu *gpu, struct seq_file *m);
 #endif
 
+struct dma_fence *etnaviv_gpu_fence_alloc(struct etnaviv_gpu *gpu);
 int etnaviv_gpu_fence_sync_obj(struct etnaviv_gem_object *etnaviv_obj,
 	unsigned int context, bool exclusive, bool implicit);
 
-- 
2.11.0