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authorMaarten Lankhorst <maarten.lankhorst@canonical.com>2014-07-01 12:57:26 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-07-08 13:03:20 -0700
commit3aac4502fd3f80dcf7e65dbf6edd8676893c1f46 (patch)
tree16d7554b57ed1b2a63f7d80d67acee5c8b3ab92c /drivers
parent606b23ad609c71cfb37eeb972ea4c901034edd3c (diff)
downloadop-kernel-dev-3aac4502fd3f80dcf7e65dbf6edd8676893c1f46.zip
op-kernel-dev-3aac4502fd3f80dcf7e65dbf6edd8676893c1f46.tar.gz
dma-buf: use reservation objects
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/ Acked-by: Thomas Hellstrom <thellstrom@vmware.com> #drivers/gpu/drm/ttm Acked-by: Sumit Semwal <sumit.semwal@linaro.org> Acked-by: Daniel Vetter <daniel@ffwll.ch> Signed-off-by: Vincent Stehlé <vincent.stehle@laposte.net> #drivers/gpu/drm/armada/ Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/dma-buf/dma-buf.c22
-rw-r--r--drivers/gpu/drm/armada/armada_gem.c2
-rw-r--r--drivers/gpu/drm/drm_prime.c8
-rw-r--r--drivers/gpu/drm/exynos/exynos_drm_dmabuf.c2
-rw-r--r--drivers/gpu/drm/i915/i915_gem_dmabuf.c3
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_drm.c1
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_gem.h1
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_prime.c7
-rw-r--r--drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c2
-rw-r--r--drivers/gpu/drm/radeon/radeon_drv.c2
-rw-r--r--drivers/gpu/drm/radeon/radeon_prime.c8
-rw-r--r--drivers/gpu/drm/tegra/gem.c2
-rw-r--r--drivers/gpu/drm/ttm/ttm_object.c2
-rw-r--r--drivers/media/v4l2-core/videobuf2-dma-contig.c2
-rw-r--r--drivers/staging/android/ion/ion.c3
15 files changed, 56 insertions, 11 deletions
diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
index 840c7fa..cd40ca2 100644
--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/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/armada/armada_gem.c b/drivers/gpu/drm/armada/armada_gem.c
index bb9b642..7496f55 100644
--- a/drivers/gpu/drm/armada/armada_gem.c
+++ b/drivers/gpu/drm/armada/armada_gem.c
@@ -539,7 +539,7 @@ armada_gem_prime_export(struct drm_device *dev, struct drm_gem_object *obj,
int flags)
{
return dma_buf_export(obj, &armada_gem_prime_dmabuf_ops, obj->size,
- O_RDWR);
+ O_RDWR, NULL);
}
struct drm_gem_object *
diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c
index 304ca8c..99d578b 100644
--- a/drivers/gpu/drm/drm_prime.c
+++ b/drivers/gpu/drm/drm_prime.c
@@ -336,7 +336,13 @@ 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 2a3ad24..60192ed 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 580aa42..82a1f4b 100644
--- a/drivers/gpu/drm/i915/i915_gem_dmabuf.c
+++ b/drivers/gpu/drm/i915/i915_gem_dmabuf.c
@@ -237,7 +237,8 @@ struct dma_buf *i915_gem_prime_export(struct drm_device *dev,
return ERR_PTR(ret);
}
- 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 ddd8375..e8ae68a 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_drm.c
@@ -844,6 +844,7 @@ 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 7caca05..ddab762 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 51a2cb1..1f51008 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 4fcca8d..a2dbfb1 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 cb14213..5fa62a1 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.c
+++ b/drivers/gpu/drm/radeon/radeon_drv.c
@@ -132,6 +132,7 @@ 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,
@@ -566,6 +567,7 @@ 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 2007456..28d7107 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/tegra/gem.c b/drivers/gpu/drm/tegra/gem.c
index aa85b7b..78cc814 100644
--- a/drivers/gpu/drm/tegra/gem.c
+++ b/drivers/gpu/drm/tegra/gem.c
@@ -420,7 +420,7 @@ struct dma_buf *tegra_gem_prime_export(struct drm_device *drm,
int flags)
{
return dma_buf_export(gem, &tegra_gem_prime_dmabuf_ops, gem->size,
- flags);
+ flags, NULL);
}
struct drm_gem_object *tegra_gem_prime_import(struct drm_device *drm,
diff --git a/drivers/gpu/drm/ttm/ttm_object.c b/drivers/gpu/drm/ttm/ttm_object.c
index d2a0533..12c8711 100644
--- a/drivers/gpu/drm/ttm/ttm_object.c
+++ b/drivers/gpu/drm/ttm/ttm_object.c
@@ -695,7 +695,7 @@ 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 880be07..c4e4dfa 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/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
index 389b8f6..2703609 100644
--- a/drivers/staging/android/ion/ion.c
+++ b/drivers/staging/android/ion/ion.c
@@ -1120,7 +1120,8 @@ struct dma_buf *ion_share_dma_buf(struct ion_client *client,
ion_buffer_get(buffer);
mutex_unlock(&client->lock);
- dmabuf = dma_buf_export(buffer, &dma_buf_ops, buffer->size, O_RDWR);
+ dmabuf = dma_buf_export(buffer, &dma_buf_ops, buffer->size, O_RDWR,
+ NULL);
if (IS_ERR(dmabuf)) {
ion_buffer_put(buffer);
return dmabuf;
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