[v2,06/11] drm/qxl: add qxl_bo_vmap/qxl_bo_vunmap
diff mbox series

Message ID 20210217123213.2199186-7-kraxel@redhat.com
State Accepted
Commit dce39226180afca473057084acab63bba99fcc4e
Headers show
Series
  • [v2,01/11] drm/qxl: properly handle device init failures
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Commit Message

Gerd Hoffmann Feb. 17, 2021, 12:32 p.m. UTC
Add vmap/vunmap variants which reserve (and pin) the bo.
They can be used in case the caller doesn't hold a reservation
for the bo.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 drivers/gpu/drm/qxl/qxl_object.h |  2 ++
 drivers/gpu/drm/qxl/qxl_object.c | 36 ++++++++++++++++++++++++++++++++
 2 files changed, 38 insertions(+)

Comments

Thomas Zimmermann Feb. 17, 2021, 7:24 p.m. UTC | #1
Am 17.02.21 um 13:32 schrieb Gerd Hoffmann:
> Add vmap/vunmap variants which reserve (and pin) the bo.
> They can be used in case the caller doesn't hold a reservation
> for the bo.
> 
> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

Acked-by: Thomas Zimmermann <tzimmermann@suse.de>

> ---
>   drivers/gpu/drm/qxl/qxl_object.h |  2 ++
>   drivers/gpu/drm/qxl/qxl_object.c | 36 ++++++++++++++++++++++++++++++++
>   2 files changed, 38 insertions(+)
> 
> diff --git a/drivers/gpu/drm/qxl/qxl_object.h b/drivers/gpu/drm/qxl/qxl_object.h
> index 2495e5cdf353..ee9c29de4d3d 100644
> --- a/drivers/gpu/drm/qxl/qxl_object.h
> +++ b/drivers/gpu/drm/qxl/qxl_object.h
> @@ -64,7 +64,9 @@ extern int qxl_bo_create(struct qxl_device *qdev,
>   			 u32 priority,
>   			 struct qxl_surface *surf,
>   			 struct qxl_bo **bo_ptr);
> +int qxl_bo_vmap(struct qxl_bo *bo, struct dma_buf_map *map);
>   int qxl_bo_vmap_locked(struct qxl_bo *bo, struct dma_buf_map *map);
> +int qxl_bo_vunmap(struct qxl_bo *bo);
>   void qxl_bo_vunmap_locked(struct qxl_bo *bo);
>   void *qxl_bo_kmap_atomic_page(struct qxl_device *qdev, struct qxl_bo *bo, int page_offset);
>   void qxl_bo_kunmap_atomic_page(struct qxl_device *qdev, struct qxl_bo *bo, void *map);
> diff --git a/drivers/gpu/drm/qxl/qxl_object.c b/drivers/gpu/drm/qxl/qxl_object.c
> index f4a015381a7f..82c3bf195ad6 100644
> --- a/drivers/gpu/drm/qxl/qxl_object.c
> +++ b/drivers/gpu/drm/qxl/qxl_object.c
> @@ -29,6 +29,9 @@
>   #include "qxl_drv.h"
>   #include "qxl_object.h"
>   
> +static int __qxl_bo_pin(struct qxl_bo *bo);
> +static void __qxl_bo_unpin(struct qxl_bo *bo);
> +
>   static void qxl_ttm_bo_destroy(struct ttm_buffer_object *tbo)
>   {
>   	struct qxl_bo *bo;
> @@ -179,6 +182,25 @@ int qxl_bo_vmap_locked(struct qxl_bo *bo, struct dma_buf_map *map)
>   	return 0;
>   }
>   
> +int qxl_bo_vmap(struct qxl_bo *bo, struct dma_buf_map *map)
> +{
> +	int r;
> +
> +	r = qxl_bo_reserve(bo);
> +	if (r)
> +		return r;
> +
> +	r = __qxl_bo_pin(bo);
> +	if (r) {
> +		qxl_bo_unreserve(bo);
> +		return r;
> +	}
> +
> +	r = qxl_bo_vmap_locked(bo, map);
> +	qxl_bo_unreserve(bo);
> +	return r;
> +}
> +
>   void *qxl_bo_kmap_atomic_page(struct qxl_device *qdev,
>   			      struct qxl_bo *bo, int page_offset)
>   {
> @@ -223,6 +245,20 @@ void qxl_bo_vunmap_locked(struct qxl_bo *bo)
>   	ttm_bo_vunmap(&bo->tbo, &bo->map);
>   }
>   
> +int qxl_bo_vunmap(struct qxl_bo *bo)
> +{
> +	int r;
> +
> +	r = qxl_bo_reserve(bo);
> +	if (r)
> +		return r;
> +
> +	qxl_bo_vunmap_locked(bo);
> +	__qxl_bo_unpin(bo);
> +	qxl_bo_unreserve(bo);
> +	return 0;
> +}
> +
>   void qxl_bo_kunmap_atomic_page(struct qxl_device *qdev,
>   			       struct qxl_bo *bo, void *pmap)
>   {
>

Patch
diff mbox series

diff --git a/drivers/gpu/drm/qxl/qxl_object.h b/drivers/gpu/drm/qxl/qxl_object.h
index 2495e5cdf353..ee9c29de4d3d 100644
--- a/drivers/gpu/drm/qxl/qxl_object.h
+++ b/drivers/gpu/drm/qxl/qxl_object.h
@@ -64,7 +64,9 @@  extern int qxl_bo_create(struct qxl_device *qdev,
 			 u32 priority,
 			 struct qxl_surface *surf,
 			 struct qxl_bo **bo_ptr);
+int qxl_bo_vmap(struct qxl_bo *bo, struct dma_buf_map *map);
 int qxl_bo_vmap_locked(struct qxl_bo *bo, struct dma_buf_map *map);
+int qxl_bo_vunmap(struct qxl_bo *bo);
 void qxl_bo_vunmap_locked(struct qxl_bo *bo);
 void *qxl_bo_kmap_atomic_page(struct qxl_device *qdev, struct qxl_bo *bo, int page_offset);
 void qxl_bo_kunmap_atomic_page(struct qxl_device *qdev, struct qxl_bo *bo, void *map);
diff --git a/drivers/gpu/drm/qxl/qxl_object.c b/drivers/gpu/drm/qxl/qxl_object.c
index f4a015381a7f..82c3bf195ad6 100644
--- a/drivers/gpu/drm/qxl/qxl_object.c
+++ b/drivers/gpu/drm/qxl/qxl_object.c
@@ -29,6 +29,9 @@ 
 #include "qxl_drv.h"
 #include "qxl_object.h"
 
+static int __qxl_bo_pin(struct qxl_bo *bo);
+static void __qxl_bo_unpin(struct qxl_bo *bo);
+
 static void qxl_ttm_bo_destroy(struct ttm_buffer_object *tbo)
 {
 	struct qxl_bo *bo;
@@ -179,6 +182,25 @@  int qxl_bo_vmap_locked(struct qxl_bo *bo, struct dma_buf_map *map)
 	return 0;
 }
 
+int qxl_bo_vmap(struct qxl_bo *bo, struct dma_buf_map *map)
+{
+	int r;
+
+	r = qxl_bo_reserve(bo);
+	if (r)
+		return r;
+
+	r = __qxl_bo_pin(bo);
+	if (r) {
+		qxl_bo_unreserve(bo);
+		return r;
+	}
+
+	r = qxl_bo_vmap_locked(bo, map);
+	qxl_bo_unreserve(bo);
+	return r;
+}
+
 void *qxl_bo_kmap_atomic_page(struct qxl_device *qdev,
 			      struct qxl_bo *bo, int page_offset)
 {
@@ -223,6 +245,20 @@  void qxl_bo_vunmap_locked(struct qxl_bo *bo)
 	ttm_bo_vunmap(&bo->tbo, &bo->map);
 }
 
+int qxl_bo_vunmap(struct qxl_bo *bo)
+{
+	int r;
+
+	r = qxl_bo_reserve(bo);
+	if (r)
+		return r;
+
+	qxl_bo_vunmap_locked(bo);
+	__qxl_bo_unpin(bo);
+	qxl_bo_unreserve(bo);
+	return 0;
+}
+
 void qxl_bo_kunmap_atomic_page(struct qxl_device *qdev,
 			       struct qxl_bo *bo, void *pmap)
 {