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drm/vmwgfx: Replace vmw_dma_buffer with vmw_buffer_object

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Initially vmware buffer objects were only used as DMA buffers, so the name
DMA buffer was a natural one. However, currently they are used also as
dumb buffers and MOBs backing guest backed objects so renaming them to
buffer objects is logical. Particularly since there is a dmabuf subsystem
in the kernel where a dma buffer means something completely different.

This also renames user-space api structures and IOCTL names
correspondingly, but the old names remain defined for now and the ABI
hasn't changed.

There are a couple of minor style changes to make checkpatch happy.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Reviewed-by: Deepak Rawat <drawat@vmware.com>
This commit is contained in:
Thomas Hellstrom
2018-06-19 15:02:16 +02:00
parent 07c13bb78c
commit f1d34bfd70
20 changed files with 589 additions and 607 deletions
Download Patch File Download Diff File Expand all files Collapse all files

61
include/uapi/drm/vmwgfx_drm.h
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@@ -40,6 +40,7 @@ extern "C" {
#define DRM_VMW_GET_PARAM 0
#define DRM_VMW_ALLOC_DMABUF 1
#define DRM_VMW_ALLOC_BO 1
#define DRM_VMW_UNREF_DMABUF 2
#define DRM_VMW_HANDLE_CLOSE 2
#define DRM_VMW_CURSOR_BYPASS 3
@@ -356,9 +357,9 @@ struct drm_vmw_fence_rep {
/*************************************************************************/
/**
* DRM_VMW_ALLOC_DMABUF
* DRM_VMW_ALLOC_BO
*
* Allocate a DMA buffer that is visible also to the host.
* Allocate a buffer object that is visible also to the host.
* NOTE: The buffer is
* identified by a handle and an offset, which are private to the guest, but
* useable in the command stream. The guest kernel may translate these
@@ -366,27 +367,28 @@ struct drm_vmw_fence_rep {
* be zero at all times, or it may disappear from the interface before it is
* fixed.
*
* The DMA buffer may stay user-space mapped in the guest at all times,
* The buffer object may stay user-space mapped in the guest at all times,
* and is thus suitable for sub-allocation.
*
* DMA buffers are mapped using the mmap() syscall on the drm device.
* Buffer objects are mapped using the mmap() syscall on the drm device.
*/
/**
* struct drm_vmw_alloc_dmabuf_req
* struct drm_vmw_alloc_bo_req
*
* @size: Required minimum size of the buffer.
*
* Input data to the DRM_VMW_ALLOC_DMABUF Ioctl.
* Input data to the DRM_VMW_ALLOC_BO Ioctl.
*/
struct drm_vmw_alloc_dmabuf_req {
struct drm_vmw_alloc_bo_req {
__u32 size;
__u32 pad64;
};
#define drm_vmw_alloc_dmabuf_req drm_vmw_alloc_bo_req
/**
* struct drm_vmw_dmabuf_rep
* struct drm_vmw_bo_rep
*
* @map_handle: Offset to use in the mmap() call used to map the buffer.
* @handle: Handle unique to this buffer. Used for unreferencing.
@@ -395,50 +397,32 @@ struct drm_vmw_alloc_dmabuf_req {
* @cur_gmr_offset: Offset to use in the command stream when this buffer is
* referenced. See note above.
*
* Output data from the DRM_VMW_ALLOC_DMABUF Ioctl.
* Output data from the DRM_VMW_ALLOC_BO Ioctl.
*/
struct drm_vmw_dmabuf_rep {
struct drm_vmw_bo_rep {
__u64 map_handle;
__u32 handle;
__u32 cur_gmr_id;
__u32 cur_gmr_offset;
__u32 pad64;
};
#define drm_vmw_dmabuf_rep drm_vmw_bo_rep
/**
* union drm_vmw_dmabuf_arg
* union drm_vmw_alloc_bo_arg
*
* @req: Input data as described above.
* @rep: Output data as described above.
*
* Argument to the DRM_VMW_ALLOC_DMABUF Ioctl.
* Argument to the DRM_VMW_ALLOC_BO Ioctl.
*/
union drm_vmw_alloc_dmabuf_arg {
struct drm_vmw_alloc_dmabuf_req req;
struct drm_vmw_dmabuf_rep rep;
};
/*************************************************************************/
/**
* DRM_VMW_UNREF_DMABUF - Free a DMA buffer.
*
*/
/**
* struct drm_vmw_unref_dmabuf_arg
*
* @handle: Handle indicating what buffer to free. Obtained from the
* DRM_VMW_ALLOC_DMABUF Ioctl.
*
* Argument to the DRM_VMW_UNREF_DMABUF Ioctl.
*/
struct drm_vmw_unref_dmabuf_arg {
__u32 handle;
__u32 pad64;
union drm_vmw_alloc_bo_arg {
struct drm_vmw_alloc_bo_req req;
struct drm_vmw_bo_rep rep;
};
#define drm_vmw_alloc_dmabuf_arg drm_vmw_alloc_bo_arg
/*************************************************************************/
/**
@@ -1103,9 +1087,8 @@ union drm_vmw_extended_context_arg {
* DRM_VMW_HANDLE_CLOSE - Close a user-space handle and release its
* underlying resource.
*
* Note that this ioctl is overlaid on the DRM_VMW_UNREF_DMABUF Ioctl.
* The ioctl arguments therefore need to be identical in layout.
*
* Note that this ioctl is overlaid on the deprecated DRM_VMW_UNREF_DMABUF
* Ioctl.
*/
/**
@@ -1119,7 +1102,7 @@ struct drm_vmw_handle_close_arg {
__u32 handle;
__u32 pad64;
};
#define drm_vmw_unref_dmabuf_arg drm_vmw_handle_close_arg
#if defined(__cplusplus)
}