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.
Signed-off-by: Gerd Hoffmann <kraxel at redhat.com>
---
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)
{
--
2.29.2
Thomas Zimmermann
2021-Feb-16 13:17 UTC
[PATCH 06/10] drm/qxl: add qxl_bo_kmap/qxl_bo_kunmap
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 at redhat.com> > --- > 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 N?rnberg, Germany (HRB 36809, AG N?rnberg) Gesch?ftsf?hrer: Felix Imend?rffer -------------- next part -------------- A non-text attachment was scrubbed... Name: OpenPGP_signature Type: application/pgp-signature Size: 840 bytes Desc: OpenPGP digital signature URL: <http://lists.linuxfoundation.org/pipermail/virtualization/attachments/20210216/fb8abf01/attachment.sig>