Hi Am 16.02.21 um 12:37 schrieb Gerd Hoffmann:
Add kmap/kunmap variants which reserve (and pin) the bo. They can be used in case the caller doesn't hold a reservation for the bo.
Again, these functions should rather be called vmap/vunamp.
Signed-off-by: Gerd Hoffmann <kraxel@xxxxxxxxxx> --- 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 5bd33650183f..360972ae4869 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); +extern int qxl_bo_kmap(struct qxl_bo *bo, struct dma_buf_map *map); extern int qxl_bo_kmap_locked(struct qxl_bo *bo, struct dma_buf_map *map); +extern int qxl_bo_kunmap(struct qxl_bo *bo); extern void qxl_bo_kunmap_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 b56d4dfc28cb..22748b9566af 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_kmap_locked(struct qxl_bo *bo, struct dma_buf_map *map) return 0; }+int qxl_bo_kmap(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_kmap_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_kunmap_locked(struct qxl_bo *bo) ttm_bo_vunmap(&bo->tbo, &bo->map); }+int qxl_bo_kunmap(struct qxl_bo *bo)+{ + int r; + + r = qxl_bo_reserve(bo); + if (r) + return r; + + qxl_bo_kunmap_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) {
-- Thomas Zimmermann Graphics Driver Developer SUSE Software Solutions Germany GmbH Maxfeldstr. 5, 90409 Nürnberg, Germany (HRB 36809, AG Nürnberg) Geschäftsführer: Felix Imendörffer
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