| Message ID | 20140217155617.20337.22601.stgit@patser (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Mon, Feb 17, 2014 at 10:56 AM, Maarten Lankhorst <maarten.lankhorst@canonical.com> wrote: > This allows reservation objects to be used in dma-buf. it's required > for implementing polling support on the fences that belong to a dma-buf. > > Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com> > Acked-by: Mauro Carvalho Chehab <m.chehab@samsung.com> #drivers/media/v4l2-core/ > --- > drivers/base/dma-buf.c | 22 ++++++++++++++++++++-- > drivers/gpu/drm/drm_prime.c | 8 +++++++- > drivers/gpu/drm/exynos/exynos_drm_dmabuf.c | 2 +- > drivers/gpu/drm/i915/i915_gem_dmabuf.c | 2 +- > drivers/gpu/drm/nouveau/nouveau_drm.c | 1 + > drivers/gpu/drm/nouveau/nouveau_gem.h | 1 + > drivers/gpu/drm/nouveau/nouveau_prime.c | 7 +++++++ > drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c | 2 +- > drivers/gpu/drm/radeon/radeon_drv.c | 2 ++ > drivers/gpu/drm/radeon/radeon_prime.c | 8 ++++++++ > drivers/gpu/drm/ttm/ttm_object.c | 2 +- > drivers/media/v4l2-core/videobuf2-dma-contig.c | 2 +- > include/drm/drmP.h | 2 ++ > include/linux/dma-buf.h | 9 ++++++--- > 14 files changed, 59 insertions(+), 11 deletions(-) > > diff --git a/drivers/base/dma-buf.c b/drivers/base/dma-buf.c > index 1e16cbd61da2..85e792c2c909 100644 > --- a/drivers/base/dma-buf.c > +++ b/drivers/base/dma-buf.c > @@ -25,10 +25,12 @@ > #include <linux/fs.h> > #include <linux/slab.h> > #include <linux/dma-buf.h> > +#include <linux/fence.h> > #include <linux/anon_inodes.h> > #include <linux/export.h> > #include <linux/debugfs.h> > #include <linux/seq_file.h> > +#include <linux/reservation.h> > > static inline int is_dma_buf_file(struct file *); > > @@ -56,6 +58,9 @@ static int dma_buf_release(struct inode *inode, struct file *file) > list_del(&dmabuf->list_node); > mutex_unlock(&db_list.lock); > > + if (dmabuf->resv == (struct reservation_object*)&dmabuf[1]) > + reservation_object_fini(dmabuf->resv); > + > kfree(dmabuf); > return 0; > } > @@ -128,6 +133,7 @@ static inline int is_dma_buf_file(struct file *file) > * @size: [in] Size of the buffer > * @flags: [in] mode flags for the file. > * @exp_name: [in] name of the exporting module - useful for debugging. > + * @resv: [in] reservation-object, NULL to allocate default one. > * > * Returns, on success, a newly created dma_buf object, which wraps the > * supplied private data and operations for dma_buf_ops. On either missing > @@ -135,10 +141,17 @@ static inline int is_dma_buf_file(struct file *file) > * > */ > struct dma_buf *dma_buf_export_named(void *priv, const struct dma_buf_ops *ops, > - size_t size, int flags, const char *exp_name) > + size_t size, int flags, const char *exp_name, > + struct reservation_object *resv) > { > struct dma_buf *dmabuf; > struct file *file; > + size_t alloc_size = sizeof(struct dma_buf); > + if (!resv) > + alloc_size += sizeof(struct reservation_object); > + else > + /* prevent &dma_buf[1] == dma_buf->resv */ > + alloc_size += 1; > > if (WARN_ON(!priv || !ops > || !ops->map_dma_buf > @@ -150,7 +163,7 @@ struct dma_buf *dma_buf_export_named(void *priv, const struct dma_buf_ops *ops, > return ERR_PTR(-EINVAL); > } > > - dmabuf = kzalloc(sizeof(struct dma_buf), GFP_KERNEL); > + dmabuf = kzalloc(alloc_size, GFP_KERNEL); > if (dmabuf == NULL) > return ERR_PTR(-ENOMEM); > > @@ -158,6 +171,11 @@ struct dma_buf *dma_buf_export_named(void *priv, const struct dma_buf_ops *ops, > dmabuf->ops = ops; > dmabuf->size = size; > dmabuf->exp_name = exp_name; > + if (!resv) { > + resv = (struct reservation_object*)&dmabuf[1]; > + reservation_object_init(resv); > + } > + dmabuf->resv = resv; > > file = anon_inode_getfile("dmabuf", &dma_buf_fops, dmabuf, flags); > if (IS_ERR(file)) { > diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c > index 56805c39c906..a13e90245adf 100644 > --- a/drivers/gpu/drm/drm_prime.c > +++ b/drivers/gpu/drm/drm_prime.c > @@ -318,7 +318,13 @@ static const struct dma_buf_ops drm_gem_prime_dmabuf_ops = { > struct dma_buf *drm_gem_prime_export(struct drm_device *dev, > struct drm_gem_object *obj, int flags) > { > - return dma_buf_export(obj, &drm_gem_prime_dmabuf_ops, obj->size, flags); > + struct reservation_object *robj = NULL; > + > + if (dev->driver->gem_prime_res_obj) > + robj = dev->driver->gem_prime_res_obj(obj); well, you could hook up msm_gem_prime_res_obj too (since I already have a resv obj in 'struct msm_gem_object' ;-) That said, I wonder if maybe we just want to promote the 'struct reservation_object' ptr into 'struct drm_gem_object' so we can have a common get_prime_res_obj fxn for everyone using GEM? Anyways, that only matters within drivers/gpu/drm so easy enough to change it later.. so for the drm/fence/reservation/dmabuf bits: Reviewed-by: Rob Clark <robdclark@gmail.com> > + > + return dma_buf_export(obj, &drm_gem_prime_dmabuf_ops, obj->size, > + flags, robj); > } > EXPORT_SYMBOL(drm_gem_prime_export); > > diff --git a/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c b/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c > index 59827cc5e770..b5e89f46326e 100644 > --- a/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c > +++ b/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c > @@ -187,7 +187,7 @@ struct dma_buf *exynos_dmabuf_prime_export(struct drm_device *drm_dev, > struct exynos_drm_gem_obj *exynos_gem_obj = to_exynos_gem_obj(obj); > > return dma_buf_export(obj, &exynos_dmabuf_ops, > - exynos_gem_obj->base.size, flags); > + exynos_gem_obj->base.size, flags, NULL); > } > > struct drm_gem_object *exynos_dmabuf_prime_import(struct drm_device *drm_dev, > diff --git a/drivers/gpu/drm/i915/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/i915_gem_dmabuf.c > index 9bb533e0d762..ea66f40e95b3 100644 > --- a/drivers/gpu/drm/i915/i915_gem_dmabuf.c > +++ b/drivers/gpu/drm/i915/i915_gem_dmabuf.c > @@ -233,7 +233,7 @@ static const struct dma_buf_ops i915_dmabuf_ops = { > struct dma_buf *i915_gem_prime_export(struct drm_device *dev, > struct drm_gem_object *gem_obj, int flags) > { > - return dma_buf_export(gem_obj, &i915_dmabuf_ops, gem_obj->size, flags); > + return dma_buf_export(gem_obj, &i915_dmabuf_ops, gem_obj->size, flags, NULL); > } > > static int i915_gem_object_get_pages_dmabuf(struct drm_i915_gem_object *obj) > diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.c b/drivers/gpu/drm/nouveau/nouveau_drm.c > index 78c8e7146d56..2a15c8e8d199 100644 > --- a/drivers/gpu/drm/nouveau/nouveau_drm.c > +++ b/drivers/gpu/drm/nouveau/nouveau_drm.c > @@ -816,6 +816,7 @@ driver = { > .gem_prime_export = drm_gem_prime_export, > .gem_prime_import = drm_gem_prime_import, > .gem_prime_pin = nouveau_gem_prime_pin, > + .gem_prime_res_obj = nouveau_gem_prime_res_obj, > .gem_prime_unpin = nouveau_gem_prime_unpin, > .gem_prime_get_sg_table = nouveau_gem_prime_get_sg_table, > .gem_prime_import_sg_table = nouveau_gem_prime_import_sg_table, > diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.h b/drivers/gpu/drm/nouveau/nouveau_gem.h > index 7caca057bc38..ddab762d81fe 100644 > --- a/drivers/gpu/drm/nouveau/nouveau_gem.h > +++ b/drivers/gpu/drm/nouveau/nouveau_gem.h > @@ -35,6 +35,7 @@ extern int nouveau_gem_ioctl_info(struct drm_device *, void *, > struct drm_file *); > > extern int nouveau_gem_prime_pin(struct drm_gem_object *); > +struct reservation_object *nouveau_gem_prime_res_obj(struct drm_gem_object *); > extern void nouveau_gem_prime_unpin(struct drm_gem_object *); > extern struct sg_table *nouveau_gem_prime_get_sg_table(struct drm_gem_object *); > extern struct drm_gem_object *nouveau_gem_prime_import_sg_table( > diff --git a/drivers/gpu/drm/nouveau/nouveau_prime.c b/drivers/gpu/drm/nouveau/nouveau_prime.c > index 51a2cb102b44..1f51008e4d26 100644 > --- a/drivers/gpu/drm/nouveau/nouveau_prime.c > +++ b/drivers/gpu/drm/nouveau/nouveau_prime.c > @@ -102,3 +102,10 @@ void nouveau_gem_prime_unpin(struct drm_gem_object *obj) > > nouveau_bo_unpin(nvbo); > } > + > +struct reservation_object *nouveau_gem_prime_res_obj(struct drm_gem_object *obj) > +{ > + struct nouveau_bo *nvbo = nouveau_gem_object(obj); > + > + return nvbo->bo.resv; > +} > diff --git a/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c b/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c > index 4fcca8d42796..a2dbfb1737b4 100644 > --- a/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c > +++ b/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c > @@ -171,7 +171,7 @@ static struct dma_buf_ops omap_dmabuf_ops = { > struct dma_buf *omap_gem_prime_export(struct drm_device *dev, > struct drm_gem_object *obj, int flags) > { > - return dma_buf_export(obj, &omap_dmabuf_ops, obj->size, flags); > + return dma_buf_export(obj, &omap_dmabuf_ops, obj->size, flags, NULL); > } > > struct drm_gem_object *omap_gem_prime_import(struct drm_device *dev, > diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c > index 84a1bbb75f91..c15c1a1996fc 100644 > --- a/drivers/gpu/drm/radeon/radeon_drv.c > +++ b/drivers/gpu/drm/radeon/radeon_drv.c > @@ -128,6 +128,7 @@ struct drm_gem_object *radeon_gem_prime_import_sg_table(struct drm_device *dev, > struct sg_table *sg); > int radeon_gem_prime_pin(struct drm_gem_object *obj); > void radeon_gem_prime_unpin(struct drm_gem_object *obj); > +struct reservation_object *radeon_gem_prime_res_obj(struct drm_gem_object *); > void *radeon_gem_prime_vmap(struct drm_gem_object *obj); > void radeon_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr); > extern long radeon_kms_compat_ioctl(struct file *filp, unsigned int cmd, > @@ -561,6 +562,7 @@ static struct drm_driver kms_driver = { > .gem_prime_import = drm_gem_prime_import, > .gem_prime_pin = radeon_gem_prime_pin, > .gem_prime_unpin = radeon_gem_prime_unpin, > + .gem_prime_res_obj = radeon_gem_prime_res_obj, > .gem_prime_get_sg_table = radeon_gem_prime_get_sg_table, > .gem_prime_import_sg_table = radeon_gem_prime_import_sg_table, > .gem_prime_vmap = radeon_gem_prime_vmap, > diff --git a/drivers/gpu/drm/radeon/radeon_prime.c b/drivers/gpu/drm/radeon/radeon_prime.c > index 20074560fc25..28d71070c389 100644 > --- a/drivers/gpu/drm/radeon/radeon_prime.c > +++ b/drivers/gpu/drm/radeon/radeon_prime.c > @@ -103,3 +103,11 @@ void radeon_gem_prime_unpin(struct drm_gem_object *obj) > radeon_bo_unpin(bo); > radeon_bo_unreserve(bo); > } > + > + > +struct reservation_object *radeon_gem_prime_res_obj(struct drm_gem_object *obj) > +{ > + struct radeon_bo *bo = gem_to_radeon_bo(obj); > + > + return bo->tbo.resv; > +} > diff --git a/drivers/gpu/drm/ttm/ttm_object.c b/drivers/gpu/drm/ttm/ttm_object.c > index 53b51c4e671a..d06f29bd2124 100644 > --- a/drivers/gpu/drm/ttm/ttm_object.c > +++ b/drivers/gpu/drm/ttm/ttm_object.c > @@ -649,7 +649,7 @@ int ttm_prime_handle_to_fd(struct ttm_object_file *tfile, > } > > dma_buf = dma_buf_export(prime, &tdev->ops, > - prime->size, flags); > + prime->size, flags, NULL); > if (IS_ERR(dma_buf)) { > ret = PTR_ERR(dma_buf); > ttm_mem_global_free(tdev->mem_glob, > diff --git a/drivers/media/v4l2-core/videobuf2-dma-contig.c b/drivers/media/v4l2-core/videobuf2-dma-contig.c > index 33d3871d1e13..93bd2230ab0b 100644 > --- a/drivers/media/v4l2-core/videobuf2-dma-contig.c > +++ b/drivers/media/v4l2-core/videobuf2-dma-contig.c > @@ -404,7 +404,7 @@ static struct dma_buf *vb2_dc_get_dmabuf(void *buf_priv, unsigned long flags) > if (WARN_ON(!buf->sgt_base)) > return NULL; > > - dbuf = dma_buf_export(buf, &vb2_dc_dmabuf_ops, buf->size, flags); > + dbuf = dma_buf_export(buf, &vb2_dc_dmabuf_ops, buf->size, flags, NULL); > if (IS_ERR(dbuf)) > return NULL; > > diff --git a/include/drm/drmP.h b/include/drm/drmP.h > index 04a7f31301f8..902d3abdd9f9 100644 > --- a/include/drm/drmP.h > +++ b/include/drm/drmP.h > @@ -82,6 +82,7 @@ struct drm_device; > > struct device_node; > struct videomode; > +struct reservation_object; > > #include <drm/drm_os_linux.h> > #include <drm/drm_hashtab.h> > @@ -959,6 +960,7 @@ struct drm_driver { > /* low-level interface used by drm_gem_prime_{import,export} */ > int (*gem_prime_pin)(struct drm_gem_object *obj); > void (*gem_prime_unpin)(struct drm_gem_object *obj); > + struct reservation_object *(*gem_prime_res_obj)(struct drm_gem_object *); > struct sg_table *(*gem_prime_get_sg_table)(struct drm_gem_object *obj); > struct drm_gem_object *(*gem_prime_import_sg_table)( > struct drm_device *dev, size_t size, > diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h > index dfac5ed31120..34cfbac52c03 100644 > --- a/include/linux/dma-buf.h > +++ b/include/linux/dma-buf.h > @@ -115,6 +115,7 @@ struct dma_buf_ops { > * @exp_name: name of the exporter; useful for debugging. > * @list_node: node for dma_buf accounting and debugging. > * @priv: exporter specific private data for this buffer object. > + * @resv: reservation object linked to this dma-buf > */ > struct dma_buf { > size_t size; > @@ -128,6 +129,7 @@ struct dma_buf { > const char *exp_name; > struct list_head list_node; > void *priv; > + struct reservation_object *resv; > }; > > /** > @@ -168,10 +170,11 @@ void dma_buf_detach(struct dma_buf *dmabuf, > struct dma_buf_attachment *dmabuf_attach); > > struct dma_buf *dma_buf_export_named(void *priv, const struct dma_buf_ops *ops, > - size_t size, int flags, const char *); > + size_t size, int flags, const char *, > + struct reservation_object *); > > -#define dma_buf_export(priv, ops, size, flags) \ > - dma_buf_export_named(priv, ops, size, flags, __FILE__) > +#define dma_buf_export(priv, ops, size, flags, resv) \ > + dma_buf_export_named(priv, ops, size, flags, __FILE__, resv) > > int dma_buf_fd(struct dma_buf *dmabuf, int flags); > struct dma_buf *dma_buf_get(int fd); > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/
On 02/17/2014 04:56 PM, Maarten Lankhorst wrote: > This allows reservation objects to be used in dma-buf. it's required > for implementing polling support on the fences that belong to a dma-buf. > > Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com> > Acked-by: Mauro Carvalho Chehab <m.chehab@samsung.com> #drivers/media/v4l2-core/ For the TTM part: Acked-by: Thomas Hellstrom <thellstrom@vmware.com>
diff --git a/drivers/base/dma-buf.c b/drivers/base/dma-buf.c index 1e16cbd61da2..85e792c2c909 100644 --- a/drivers/base/dma-buf.c +++ b/drivers/base/dma-buf.c @@ -25,10 +25,12 @@ #include <linux/fs.h> #include <linux/slab.h> #include <linux/dma-buf.h> +#include <linux/fence.h> #include <linux/anon_inodes.h> #include <linux/export.h> #include <linux/debugfs.h> #include <linux/seq_file.h> +#include <linux/reservation.h> static inline int is_dma_buf_file(struct file *); @@ -56,6 +58,9 @@ static int dma_buf_release(struct inode *inode, struct file *file) list_del(&dmabuf->list_node); mutex_unlock(&db_list.lock); + if (dmabuf->resv == (struct reservation_object*)&dmabuf[1]) + reservation_object_fini(dmabuf->resv); + kfree(dmabuf); return 0; } @@ -128,6 +133,7 @@ static inline int is_dma_buf_file(struct file *file) * @size: [in] Size of the buffer * @flags: [in] mode flags for the file. * @exp_name: [in] name of the exporting module - useful for debugging. + * @resv: [in] reservation-object, NULL to allocate default one. * * Returns, on success, a newly created dma_buf object, which wraps the * supplied private data and operations for dma_buf_ops. On either missing @@ -135,10 +141,17 @@ static inline int is_dma_buf_file(struct file *file) * */ struct dma_buf *dma_buf_export_named(void *priv, const struct dma_buf_ops *ops, - size_t size, int flags, const char *exp_name) + size_t size, int flags, const char *exp_name, + struct reservation_object *resv) { struct dma_buf *dmabuf; struct file *file; + size_t alloc_size = sizeof(struct dma_buf); + if (!resv) + alloc_size += sizeof(struct reservation_object); + else + /* prevent &dma_buf[1] == dma_buf->resv */ + alloc_size += 1; if (WARN_ON(!priv || !ops || !ops->map_dma_buf @@ -150,7 +163,7 @@ struct dma_buf *dma_buf_export_named(void *priv, const struct dma_buf_ops *ops, return ERR_PTR(-EINVAL); } - dmabuf = kzalloc(sizeof(struct dma_buf), GFP_KERNEL); + dmabuf = kzalloc(alloc_size, GFP_KERNEL); if (dmabuf == NULL) return ERR_PTR(-ENOMEM); @@ -158,6 +171,11 @@ struct dma_buf *dma_buf_export_named(void *priv, const struct dma_buf_ops *ops, dmabuf->ops = ops; dmabuf->size = size; dmabuf->exp_name = exp_name; + if (!resv) { + resv = (struct reservation_object*)&dmabuf[1]; + reservation_object_init(resv); + } + dmabuf->resv = resv; file = anon_inode_getfile("dmabuf", &dma_buf_fops, dmabuf, flags); if (IS_ERR(file)) { diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c index 56805c39c906..a13e90245adf 100644 --- a/drivers/gpu/drm/drm_prime.c +++ b/drivers/gpu/drm/drm_prime.c @@ -318,7 +318,13 @@ static const struct dma_buf_ops drm_gem_prime_dmabuf_ops = { struct dma_buf *drm_gem_prime_export(struct drm_device *dev, struct drm_gem_object *obj, int flags) { - return dma_buf_export(obj, &drm_gem_prime_dmabuf_ops, obj->size, flags); + struct reservation_object *robj = NULL; + + if (dev->driver->gem_prime_res_obj) + robj = dev->driver->gem_prime_res_obj(obj); + + return dma_buf_export(obj, &drm_gem_prime_dmabuf_ops, obj->size, + flags, robj); } EXPORT_SYMBOL(drm_gem_prime_export); diff --git a/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c b/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c index 59827cc5e770..b5e89f46326e 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c +++ b/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c @@ -187,7 +187,7 @@ struct dma_buf *exynos_dmabuf_prime_export(struct drm_device *drm_dev, struct exynos_drm_gem_obj *exynos_gem_obj = to_exynos_gem_obj(obj); return dma_buf_export(obj, &exynos_dmabuf_ops, - exynos_gem_obj->base.size, flags); + exynos_gem_obj->base.size, flags, NULL); } struct drm_gem_object *exynos_dmabuf_prime_import(struct drm_device *drm_dev, diff --git a/drivers/gpu/drm/i915/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/i915_gem_dmabuf.c index 9bb533e0d762..ea66f40e95b3 100644 --- a/drivers/gpu/drm/i915/i915_gem_dmabuf.c +++ b/drivers/gpu/drm/i915/i915_gem_dmabuf.c @@ -233,7 +233,7 @@ static const struct dma_buf_ops i915_dmabuf_ops = { struct dma_buf *i915_gem_prime_export(struct drm_device *dev, struct drm_gem_object *gem_obj, int flags) { - return dma_buf_export(gem_obj, &i915_dmabuf_ops, gem_obj->size, flags); + return dma_buf_export(gem_obj, &i915_dmabuf_ops, gem_obj->size, flags, NULL); } static int i915_gem_object_get_pages_dmabuf(struct drm_i915_gem_object *obj) diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.c b/drivers/gpu/drm/nouveau/nouveau_drm.c index 78c8e7146d56..2a15c8e8d199 100644 --- a/drivers/gpu/drm/nouveau/nouveau_drm.c +++ b/drivers/gpu/drm/nouveau/nouveau_drm.c @@ -816,6 +816,7 @@ driver = { .gem_prime_export = drm_gem_prime_export, .gem_prime_import = drm_gem_prime_import, .gem_prime_pin = nouveau_gem_prime_pin, + .gem_prime_res_obj = nouveau_gem_prime_res_obj, .gem_prime_unpin = nouveau_gem_prime_unpin, .gem_prime_get_sg_table = nouveau_gem_prime_get_sg_table, .gem_prime_import_sg_table = nouveau_gem_prime_import_sg_table, diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.h b/drivers/gpu/drm/nouveau/nouveau_gem.h index 7caca057bc38..ddab762d81fe 100644 --- a/drivers/gpu/drm/nouveau/nouveau_gem.h +++ b/drivers/gpu/drm/nouveau/nouveau_gem.h @@ -35,6 +35,7 @@ extern int nouveau_gem_ioctl_info(struct drm_device *, void *, struct drm_file *); extern int nouveau_gem_prime_pin(struct drm_gem_object *); +struct reservation_object *nouveau_gem_prime_res_obj(struct drm_gem_object *); extern void nouveau_gem_prime_unpin(struct drm_gem_object *); extern struct sg_table *nouveau_gem_prime_get_sg_table(struct drm_gem_object *); extern struct drm_gem_object *nouveau_gem_prime_import_sg_table( diff --git a/drivers/gpu/drm/nouveau/nouveau_prime.c b/drivers/gpu/drm/nouveau/nouveau_prime.c index 51a2cb102b44..1f51008e4d26 100644 --- a/drivers/gpu/drm/nouveau/nouveau_prime.c +++ b/drivers/gpu/drm/nouveau/nouveau_prime.c @@ -102,3 +102,10 @@ void nouveau_gem_prime_unpin(struct drm_gem_object *obj) nouveau_bo_unpin(nvbo); } + +struct reservation_object *nouveau_gem_prime_res_obj(struct drm_gem_object *obj) +{ + struct nouveau_bo *nvbo = nouveau_gem_object(obj); + + return nvbo->bo.resv; +} diff --git a/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c b/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c index 4fcca8d42796..a2dbfb1737b4 100644 --- a/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c +++ b/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c @@ -171,7 +171,7 @@ static struct dma_buf_ops omap_dmabuf_ops = { struct dma_buf *omap_gem_prime_export(struct drm_device *dev, struct drm_gem_object *obj, int flags) { - return dma_buf_export(obj, &omap_dmabuf_ops, obj->size, flags); + return dma_buf_export(obj, &omap_dmabuf_ops, obj->size, flags, NULL); } struct drm_gem_object *omap_gem_prime_import(struct drm_device *dev, diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c index 84a1bbb75f91..c15c1a1996fc 100644 --- a/drivers/gpu/drm/radeon/radeon_drv.c +++ b/drivers/gpu/drm/radeon/radeon_drv.c @@ -128,6 +128,7 @@ struct drm_gem_object *radeon_gem_prime_import_sg_table(struct drm_device *dev, struct sg_table *sg); int radeon_gem_prime_pin(struct drm_gem_object *obj); void radeon_gem_prime_unpin(struct drm_gem_object *obj); +struct reservation_object *radeon_gem_prime_res_obj(struct drm_gem_object *); void *radeon_gem_prime_vmap(struct drm_gem_object *obj); void radeon_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr); extern long radeon_kms_compat_ioctl(struct file *filp, unsigned int cmd, @@ -561,6 +562,7 @@ static struct drm_driver kms_driver = { .gem_prime_import = drm_gem_prime_import, .gem_prime_pin = radeon_gem_prime_pin, .gem_prime_unpin = radeon_gem_prime_unpin, + .gem_prime_res_obj = radeon_gem_prime_res_obj, .gem_prime_get_sg_table = radeon_gem_prime_get_sg_table, .gem_prime_import_sg_table = radeon_gem_prime_import_sg_table, .gem_prime_vmap = radeon_gem_prime_vmap, diff --git a/drivers/gpu/drm/radeon/radeon_prime.c b/drivers/gpu/drm/radeon/radeon_prime.c index 20074560fc25..28d71070c389 100644 --- a/drivers/gpu/drm/radeon/radeon_prime.c +++ b/drivers/gpu/drm/radeon/radeon_prime.c @@ -103,3 +103,11 @@ void radeon_gem_prime_unpin(struct drm_gem_object *obj) radeon_bo_unpin(bo); radeon_bo_unreserve(bo); } + + +struct reservation_object *radeon_gem_prime_res_obj(struct drm_gem_object *obj) +{ + struct radeon_bo *bo = gem_to_radeon_bo(obj); + + return bo->tbo.resv; +} diff --git a/drivers/gpu/drm/ttm/ttm_object.c b/drivers/gpu/drm/ttm/ttm_object.c index 53b51c4e671a..d06f29bd2124 100644 --- a/drivers/gpu/drm/ttm/ttm_object.c +++ b/drivers/gpu/drm/ttm/ttm_object.c @@ -649,7 +649,7 @@ int ttm_prime_handle_to_fd(struct ttm_object_file *tfile, } dma_buf = dma_buf_export(prime, &tdev->ops, - prime->size, flags); + prime->size, flags, NULL); if (IS_ERR(dma_buf)) { ret = PTR_ERR(dma_buf); ttm_mem_global_free(tdev->mem_glob, diff --git a/drivers/media/v4l2-core/videobuf2-dma-contig.c b/drivers/media/v4l2-core/videobuf2-dma-contig.c index 33d3871d1e13..93bd2230ab0b 100644 --- a/drivers/media/v4l2-core/videobuf2-dma-contig.c +++ b/drivers/media/v4l2-core/videobuf2-dma-contig.c @@ -404,7 +404,7 @@ static struct dma_buf *vb2_dc_get_dmabuf(void *buf_priv, unsigned long flags) if (WARN_ON(!buf->sgt_base)) return NULL; - dbuf = dma_buf_export(buf, &vb2_dc_dmabuf_ops, buf->size, flags); + dbuf = dma_buf_export(buf, &vb2_dc_dmabuf_ops, buf->size, flags, NULL); if (IS_ERR(dbuf)) return NULL; diff --git a/include/drm/drmP.h b/include/drm/drmP.h index 04a7f31301f8..902d3abdd9f9 100644 --- a/include/drm/drmP.h +++ b/include/drm/drmP.h @@ -82,6 +82,7 @@ struct drm_device; struct device_node; struct videomode; +struct reservation_object; #include <drm/drm_os_linux.h> #include <drm/drm_hashtab.h> @@ -959,6 +960,7 @@ struct drm_driver { /* low-level interface used by drm_gem_prime_{import,export} */ int (*gem_prime_pin)(struct drm_gem_object *obj); void (*gem_prime_unpin)(struct drm_gem_object *obj); + struct reservation_object *(*gem_prime_res_obj)(struct drm_gem_object *); struct sg_table *(*gem_prime_get_sg_table)(struct drm_gem_object *obj); struct drm_gem_object *(*gem_prime_import_sg_table)( struct drm_device *dev, size_t size, diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h index dfac5ed31120..34cfbac52c03 100644 --- a/include/linux/dma-buf.h +++ b/include/linux/dma-buf.h @@ -115,6 +115,7 @@ struct dma_buf_ops { * @exp_name: name of the exporter; useful for debugging. * @list_node: node for dma_buf accounting and debugging. * @priv: exporter specific private data for this buffer object. + * @resv: reservation object linked to this dma-buf */ struct dma_buf { size_t size; @@ -128,6 +129,7 @@ struct dma_buf { const char *exp_name; struct list_head list_node; void *priv; + struct reservation_object *resv; }; /** @@ -168,10 +170,11 @@ void dma_buf_detach(struct dma_buf *dmabuf, struct dma_buf_attachment *dmabuf_attach); struct dma_buf *dma_buf_export_named(void *priv, const struct dma_buf_ops *ops, - size_t size, int flags, const char *); + size_t size, int flags, const char *, + struct reservation_object *); -#define dma_buf_export(priv, ops, size, flags) \ - dma_buf_export_named(priv, ops, size, flags, __FILE__) +#define dma_buf_export(priv, ops, size, flags, resv) \ + dma_buf_export_named(priv, ops, size, flags, __FILE__, resv) int dma_buf_fd(struct dma_buf *dmabuf, int flags); struct dma_buf *dma_buf_get(int fd);