diff options
Diffstat (limited to 'drivers/staging/psb/ttm/ttm_placement_user.h')
| -rw-r--r-- | drivers/staging/psb/ttm/ttm_placement_user.h | 259 |
1 files changed, 259 insertions, 0 deletions
diff --git a/drivers/staging/psb/ttm/ttm_placement_user.h b/drivers/staging/psb/ttm/ttm_placement_user.h new file mode 100644 index 000000000000..843d610d5de4 --- /dev/null +++ b/drivers/staging/psb/ttm/ttm_placement_user.h @@ -0,0 +1,259 @@ +/************************************************************************** + * + * Copyright 2006-2008 Tungsten Graphics, Inc., Cedar Park, TX., USA + * All Rights Reserved. + * Copyright (c) 2009 VMware, Inc., Palo Alto, CA., USA + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE + * USE OR OTHER DEALINGS IN THE SOFTWARE. + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + **************************************************************************/ +/* + * Authors + * Thomas Hellström <thomas-at-tungstengraphics-dot-com> + */ + +#ifndef _TTM_PLACEMENT_USER_H_ +#define _TTM_PLACEMENT_USER_H_ + +#if !defined(__KERNEL__) && !defined(_KERNEL) +#include <stdint.h> +#else +#include <linux/kernel.h> +#endif + +#include "ttm_placement_common.h" + +#define TTM_PLACEMENT_MAJOR 0 +#define TTM_PLACEMENT_MINOR 1 +#define TTM_PLACEMENT_PL 0 +#define TTM_PLACEMENT_DATE "080819" + +/** + * struct ttm_pl_create_req + * + * @size: The buffer object size. + * @placement: Flags that indicate initial acceptable + * placement. + * @page_alignment: Required alignment in pages. + * + * Input to the TTM_BO_CREATE ioctl. + */ + +struct ttm_pl_create_req { + uint64_t size; + uint32_t placement; + uint32_t page_alignment; +}; + +/** + * struct ttm_pl_create_ub_req + * + * @size: The buffer object size. + * @user_address: User-space address of the memory area that + * should be used to back the buffer object cast to 64-bit. + * @placement: Flags that indicate initial acceptable + * placement. + * @page_alignment: Required alignment in pages. + * + * Input to the TTM_BO_CREATE_UB ioctl. + */ + +struct ttm_pl_create_ub_req { + uint64_t size; + uint64_t user_address; + uint32_t placement; + uint32_t page_alignment; +}; + +/** + * struct ttm_pl_rep + * + * @gpu_offset: The current offset into the memory region used. + * This can be used directly by the GPU if there are no + * additional GPU mapping procedures used by the driver. + * + * @bo_size: Actual buffer object size. + * + * @map_handle: Offset into the device address space. + * Used for map, seek, read, write. This will never change + * during the lifetime of an object. + * + * @placement: Flag indicating the placement status of + * the buffer object using the TTM_PL flags above. + * + * @sync_object_arg: Used for user-space synchronization and + * depends on the synchronization model used. If fences are + * used, this is the buffer_object::fence_type_mask + * + * Output from the TTM_PL_CREATE and TTM_PL_REFERENCE, and + * TTM_PL_SETSTATUS ioctls. + */ + +struct ttm_pl_rep { + uint64_t gpu_offset; + uint64_t bo_size; + uint64_t map_handle; + uint32_t placement; + uint32_t handle; + uint32_t sync_object_arg; + uint32_t pad64; +}; + +/** + * struct ttm_pl_setstatus_req + * + * @set_placement: Placement flags to set. + * + * @clr_placement: Placement flags to clear. + * + * @handle: The object handle + * + * Input to the TTM_PL_SETSTATUS ioctl. + */ + +struct ttm_pl_setstatus_req { + uint32_t set_placement; + uint32_t clr_placement; + uint32_t handle; + uint32_t pad64; +}; + +/** + * struct ttm_pl_reference_req + * + * @handle: The object to put a reference on. + * + * Input to the TTM_PL_REFERENCE and the TTM_PL_UNREFERENCE ioctls. + */ + +struct ttm_pl_reference_req { + uint32_t handle; + uint32_t pad64; +}; + +/* + * ACCESS mode flags for SYNCCPU. + * + * TTM_SYNCCPU_MODE_READ will guarantee that the GPU is not + * writing to the buffer. + * + * TTM_SYNCCPU_MODE_WRITE will guarantee that the GPU is not + * accessing the buffer. + * + * TTM_SYNCCPU_MODE_NO_BLOCK makes sure the call does not wait + * for GPU accesses to finish but return -EBUSY. + * + * TTM_SYNCCPU_MODE_TRYCACHED Try to place the buffer in cacheable + * memory while synchronized for CPU. + */ + +#define TTM_PL_SYNCCPU_MODE_READ TTM_ACCESS_READ +#define TTM_PL_SYNCCPU_MODE_WRITE TTM_ACCESS_WRITE +#define TTM_PL_SYNCCPU_MODE_NO_BLOCK (1 << 2) +#define TTM_PL_SYNCCPU_MODE_TRYCACHED (1 << 3) + +/** + * struct ttm_pl_synccpu_arg + * + * @handle: The object to synchronize. + * + * @access_mode: access mode indicated by the + * TTM_SYNCCPU_MODE flags. + * + * @op: indicates whether to grab or release the + * buffer for cpu usage. + * + * Input to the TTM_PL_SYNCCPU ioctl. + */ + +struct ttm_pl_synccpu_arg { + uint32_t handle; + uint32_t access_mode; + enum { + TTM_PL_SYNCCPU_OP_GRAB, + TTM_PL_SYNCCPU_OP_RELEASE + } op; + uint32_t pad64; +}; + +/* + * Waiting mode flags for the TTM_BO_WAITIDLE ioctl. + * + * TTM_WAITIDLE_MODE_LAZY: Allow for sleeps during polling + * wait. + * + * TTM_WAITIDLE_MODE_NO_BLOCK: Don't block waiting for GPU, + * but return -EBUSY if the buffer is busy. + */ + +#define TTM_PL_WAITIDLE_MODE_LAZY (1 << 0) +#define TTM_PL_WAITIDLE_MODE_NO_BLOCK (1 << 1) + +/** + * struct ttm_waitidle_arg + * + * @handle: The object to synchronize. + * + * @mode: wait mode indicated by the + * TTM_SYNCCPU_MODE flags. + * + * Argument to the TTM_BO_WAITIDLE ioctl. + */ + +struct ttm_pl_waitidle_arg { + uint32_t handle; + uint32_t mode; +}; + +union ttm_pl_create_arg { + struct ttm_pl_create_req req; + struct ttm_pl_rep rep; +}; + +union ttm_pl_reference_arg { + struct ttm_pl_reference_req req; + struct ttm_pl_rep rep; +}; + +union ttm_pl_setstatus_arg { + struct ttm_pl_setstatus_req req; + struct ttm_pl_rep rep; +}; + +union ttm_pl_create_ub_arg { + struct ttm_pl_create_ub_req req; + struct ttm_pl_rep rep; +}; + +/* + * Ioctl offsets. + */ + +#define TTM_PL_CREATE 0x00 +#define TTM_PL_REFERENCE 0x01 +#define TTM_PL_UNREF 0x02 +#define TTM_PL_SYNCCPU 0x03 +#define TTM_PL_WAITIDLE 0x04 +#define TTM_PL_SETSTATUS 0x05 +#define TTM_PL_CREATE_UB 0x06 + +#endif |