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drm: export gem dmabuf_ops for drivers to reuse 

Signed-off-by: Samuel Li <Samuel.Li@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1515100334-6845-1-git-send-email-Samuel.Li@amd.com
This commit is contained in:
Samuel Li 2018-01-04 16:12:14 -05:00 committed by Alex Deucher
parent a10195bbe7
commit c308279f87
2 changed files with 58 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

39
drivers/gpu/drm/drm_prime.c
View File

@ -180,8 +180,7 @@ static int drm_prime_lookup_buf_handle(struct drm_prime_file_private *prime_fpri
return -ENOENT;
}
static int drm_gem_map_attach(struct dma_buf *dma_buf,
struct device *target_dev,
int drm_gem_map_attach(struct dma_buf *dma_buf, struct device *target_dev,
struct dma_buf_attachment *attach)
{
struct drm_prime_attachment *prime_attach;
@ -200,8 +199,9 @@ static int drm_gem_map_attach(struct dma_buf *dma_buf,
return dev->driver->gem_prime_pin(obj);
}
EXPORT_SYMBOL(drm_gem_map_attach);
static void drm_gem_map_detach(struct dma_buf *dma_buf,
void drm_gem_map_detach(struct dma_buf *dma_buf,
struct dma_buf_attachment *attach)
{
struct drm_prime_attachment *prime_attach = attach->priv;
@ -228,6 +228,7 @@ static void drm_gem_map_detach(struct dma_buf *dma_buf,
kfree(prime_attach);
attach->priv = NULL;
}
EXPORT_SYMBOL(drm_gem_map_detach);
void drm_prime_remove_buf_handle_locked(struct drm_prime_file_private *prime_fpriv,
struct dma_buf *dma_buf)
@ -254,7 +255,7 @@ void drm_prime_remove_buf_handle_locked(struct drm_prime_file_private *prime_fpr
}
}
static struct sg_table *drm_gem_map_dma_buf(struct dma_buf_attachment *attach,
struct sg_table *drm_gem_map_dma_buf(struct dma_buf_attachment *attach,
enum dma_data_direction dir)
{
struct drm_prime_attachment *prime_attach = attach->priv;
@ -291,13 +292,15 @@ static struct sg_table *drm_gem_map_dma_buf(struct dma_buf_attachment *attach,
return sgt;
}
EXPORT_SYMBOL(drm_gem_map_dma_buf);
static void drm_gem_unmap_dma_buf(struct dma_buf_attachment *attach,
void drm_gem_unmap_dma_buf(struct dma_buf_attachment *attach,
struct sg_table *sgt,
enum dma_data_direction dir)
{
/* nothing to be done here */
}
EXPORT_SYMBOL(drm_gem_unmap_dma_buf);
/**
* drm_gem_dmabuf_export - dma_buf export implementation for GEM
@ -348,47 +351,52 @@ void drm_gem_dmabuf_release(struct dma_buf *dma_buf)
}
EXPORT_SYMBOL(drm_gem_dmabuf_release);
static void *drm_gem_dmabuf_vmap(struct dma_buf *dma_buf)
void *drm_gem_dmabuf_vmap(struct dma_buf *dma_buf)
{
struct drm_gem_object *obj = dma_buf->priv;
struct drm_device *dev = obj->dev;
return dev->driver->gem_prime_vmap(obj);
}
EXPORT_SYMBOL(drm_gem_dmabuf_vmap);
static void drm_gem_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr)
void drm_gem_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr)
{
struct drm_gem_object *obj = dma_buf->priv;
struct drm_device *dev = obj->dev;
dev->driver->gem_prime_vunmap(obj, vaddr);
}
EXPORT_SYMBOL(drm_gem_dmabuf_vunmap);
static void *drm_gem_dmabuf_kmap_atomic(struct dma_buf *dma_buf,
void *drm_gem_dmabuf_kmap_atomic(struct dma_buf *dma_buf,
unsigned long page_num)
{
return NULL;
}
EXPORT_SYMBOL(drm_gem_dmabuf_kmap_atomic);
static void drm_gem_dmabuf_kunmap_atomic(struct dma_buf *dma_buf,
void drm_gem_dmabuf_kunmap_atomic(struct dma_buf *dma_buf,
unsigned long page_num, void *addr)
{
}
static void *drm_gem_dmabuf_kmap(struct dma_buf *dma_buf,
unsigned long page_num)
EXPORT_SYMBOL(drm_gem_dmabuf_kunmap_atomic);
void *drm_gem_dmabuf_kmap(struct dma_buf *dma_buf, unsigned long page_num)
{
return NULL;
}
EXPORT_SYMBOL(drm_gem_dmabuf_kmap);
static void drm_gem_dmabuf_kunmap(struct dma_buf *dma_buf,
unsigned long page_num, void *addr)
void drm_gem_dmabuf_kunmap(struct dma_buf *dma_buf, unsigned long page_num,
void *addr)
{
}
EXPORT_SYMBOL(drm_gem_dmabuf_kunmap);
static int drm_gem_dmabuf_mmap(struct dma_buf *dma_buf,
struct vm_area_struct *vma)
int drm_gem_dmabuf_mmap(struct dma_buf *dma_buf, struct vm_area_struct *vma)
{
struct drm_gem_object *obj = dma_buf->priv;
struct drm_device *dev = obj->dev;
@ -398,6 +406,7 @@ static int drm_gem_dmabuf_mmap(struct dma_buf *dma_buf,
return dev->driver->gem_prime_mmap(obj, vma);
}
EXPORT_SYMBOL(drm_gem_dmabuf_mmap);
static const struct dma_buf_ops drm_gem_prime_dmabuf_ops = {
.attach = drm_gem_map_attach,

22
include/drm/drm_prime.h
View File

@ -54,6 +54,9 @@ struct device;
struct dma_buf_export_info;
struct dma_buf;
struct dma_buf_attachment;
enum dma_data_direction;
struct drm_device;
struct drm_gem_object;
@ -79,6 +82,25 @@ int drm_gem_prime_fd_to_handle(struct drm_device *dev,
struct dma_buf *drm_gem_dmabuf_export(struct drm_device *dev,
struct dma_buf_export_info *exp_info);
void drm_gem_dmabuf_release(struct dma_buf *dma_buf);
int drm_gem_map_attach(struct dma_buf *dma_buf, struct device *target_dev,
struct dma_buf_attachment *attach);
void drm_gem_map_detach(struct dma_buf *dma_buf,
struct dma_buf_attachment *attach);
struct sg_table *drm_gem_map_dma_buf(struct dma_buf_attachment *attach,
enum dma_data_direction dir);
void drm_gem_unmap_dma_buf(struct dma_buf_attachment *attach,
struct sg_table *sgt,
enum dma_data_direction dir);
void *drm_gem_dmabuf_vmap(struct dma_buf *dma_buf);
void drm_gem_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr);
void *drm_gem_dmabuf_kmap_atomic(struct dma_buf *dma_buf,
unsigned long page_num);
void drm_gem_dmabuf_kunmap_atomic(struct dma_buf *dma_buf,
unsigned long page_num, void *addr);
void *drm_gem_dmabuf_kmap(struct dma_buf *dma_buf, unsigned long page_num);
void drm_gem_dmabuf_kunmap(struct dma_buf *dma_buf, unsigned long page_num,
void *addr);
int drm_gem_dmabuf_mmap(struct dma_buf *dma_buf, struct vm_area_struct *vma);
int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages,
dma_addr_t *addrs, int max_pages);