[PATCH] drm/etnaviv: implement dma-buf mmap
Lucas Stach
l.stach at pengutronix.de
Tue Nov 22 10:47:10 UTC 2016
This adds the required boilerplate to allow direct mmap of exported
etnaviv BOs.
Signed-off-by: Lucas Stach <l.stach at pengutronix.de>
Tested-by: Philipp Zabel <p.zabel at pengutronix.de>
---
drivers/gpu/drm/etnaviv/etnaviv_drv.c | 1 +
drivers/gpu/drm/etnaviv/etnaviv_drv.h | 2 ++
drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c | 13 +++++++++++++
3 files changed, 16 insertions(+)
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.c b/drivers/gpu/drm/etnaviv/etnaviv_drv.c
index aa687669e22b..38720adfc62f 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_drv.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.c
@@ -505,6 +505,7 @@ static struct drm_driver etnaviv_drm_driver = {
.gem_prime_import_sg_table = etnaviv_gem_prime_import_sg_table,
.gem_prime_vmap = etnaviv_gem_prime_vmap,
.gem_prime_vunmap = etnaviv_gem_prime_vunmap,
+ .gem_prime_mmap = etnaviv_gem_prime_mmap,
#ifdef CONFIG_DEBUG_FS
.debugfs_init = etnaviv_debugfs_init,
.debugfs_cleanup = etnaviv_debugfs_cleanup,
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.h b/drivers/gpu/drm/etnaviv/etnaviv_drv.h
index 65e057639653..c255eda40526 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_drv.h
+++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.h
@@ -78,6 +78,8 @@ int etnaviv_gem_mmap_offset(struct drm_gem_object *obj, u64 *offset);
struct sg_table *etnaviv_gem_prime_get_sg_table(struct drm_gem_object *obj);
void *etnaviv_gem_prime_vmap(struct drm_gem_object *obj);
void etnaviv_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
+int etnaviv_gem_prime_mmap(struct drm_gem_object *obj,
+ struct vm_area_struct *vma);
struct drm_gem_object *etnaviv_gem_prime_import_sg_table(struct drm_device *dev,
struct dma_buf_attachment *attach, struct sg_table *sg);
int etnaviv_gem_prime_pin(struct drm_gem_object *obj);
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c b/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
index b93618c1aa69..7e8fdb1859dd 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
@@ -39,6 +39,19 @@ void etnaviv_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
/* TODO msm_gem_vunmap() */
}
+int etnaviv_gem_prime_mmap(struct drm_gem_object *obj,
+ struct vm_area_struct *vma)
+{
+ struct etnaviv_gem_object *etnaviv_obj = to_etnaviv_bo(obj);
+ int ret;
+
+ ret = drm_gem_mmap_obj(obj, obj->size, vma);
+ if (ret < 0)
+ return ret;
+
+ return etnaviv_obj->ops->mmap(etnaviv_obj, vma);
+}
+
int etnaviv_gem_prime_pin(struct drm_gem_object *obj)
{
if (!obj->import_attach) {
--
2.10.2
More information about the dri-devel
mailing list