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/* |
* Copyright © 2008 Intel Corporation |
* |
* 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, sublicense, |
* 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 above copyright notice and this permission notice (including the next |
* paragraph) shall be included in all copies or substantial portions of the |
* Software. |
* |
* 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 NONINFRINGEMENT. IN NO EVENT SHALL |
* THE AUTHORS OR COPYRIGHT HOLDERS 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. |
* |
* Authors: |
* Eric Anholt <eric@anholt.net> |
* |
*/ |
|
/** |
* @file intel_bufmgr_priv.h |
* |
* Private definitions of Intel-specific bufmgr functions and structures. |
*/ |
|
#ifndef INTEL_BUFMGR_PRIV_H |
#define INTEL_BUFMGR_PRIV_H |
|
/** |
* Context for a buffer manager instance. |
* |
* Contains public methods followed by private storage for the buffer manager. |
*/ |
struct _drm_intel_bufmgr { |
/** |
* Allocate a buffer object. |
* |
* Buffer objects are not necessarily initially mapped into CPU virtual |
* address space or graphics device aperture. They must be mapped |
* using bo_map() or drm_intel_gem_bo_map_gtt() to be used by the CPU. |
*/ |
drm_intel_bo *(*bo_alloc) (drm_intel_bufmgr *bufmgr, const char *name, |
unsigned long size, unsigned int alignment); |
|
/** |
* Allocate a buffer object, hinting that it will be used as a |
* render target. |
* |
* This is otherwise the same as bo_alloc. |
*/ |
// drm_intel_bo *(*bo_alloc_for_render) (drm_intel_bufmgr *bufmgr, |
// const char *name, |
// unsigned long size, |
// unsigned int alignment); |
|
/** |
* Allocate a tiled buffer object. |
* |
* Alignment for tiled objects is set automatically; the 'flags' |
* argument provides a hint about how the object will be used initially. |
* |
* Valid tiling formats are: |
* I915_TILING_NONE |
* I915_TILING_X |
* I915_TILING_Y |
* |
* Note the tiling format may be rejected; callers should check the |
* 'tiling_mode' field on return, as well as the pitch value, which |
* may have been rounded up to accommodate for tiling restrictions. |
*/ |
drm_intel_bo *(*bo_alloc_tiled) (drm_intel_bufmgr *bufmgr, |
const char *name, |
int x, int y, int cpp, |
uint32_t *tiling_mode, |
unsigned long *pitch, |
unsigned long flags); |
|
/** Takes a reference on a buffer object */ |
void (*bo_reference) (drm_intel_bo *bo); |
|
/** |
* Releases a reference on a buffer object, freeing the data if |
* no references remain. |
*/ |
void (*bo_unreference) (drm_intel_bo *bo); |
|
/** |
* Maps the buffer into userspace. |
* |
* This function will block waiting for any existing execution on the |
* buffer to complete, first. The resulting mapping is available at |
* buf->virtual. |
*/ |
int (*bo_map) (drm_intel_bo *bo, int write_enable); |
|
/** |
* Reduces the refcount on the userspace mapping of the buffer |
* object. |
*/ |
int (*bo_unmap) (drm_intel_bo *bo); |
|
/** |
* Write data into an object. |
* |
* This is an optional function, if missing, |
* drm_intel_bo will map/memcpy/unmap. |
*/ |
int (*bo_subdata) (drm_intel_bo *bo, unsigned long offset, |
unsigned long size, const void *data); |
|
/** |
* Read data from an object |
* |
* This is an optional function, if missing, |
* drm_intel_bo will map/memcpy/unmap. |
*/ |
// int (*bo_get_subdata) (drm_intel_bo *bo, unsigned long offset, |
// unsigned long size, void *data); |
|
/** |
* Waits for rendering to an object by the GPU to have completed. |
* |
* This is not required for any access to the BO by bo_map, |
* bo_subdata, etc. It is merely a way for the driver to implement |
* glFinish. |
*/ |
void (*bo_wait_rendering) (drm_intel_bo *bo); |
|
/** |
* Tears down the buffer manager instance. |
*/ |
void (*destroy) (drm_intel_bufmgr *bufmgr); |
|
/** |
* Add relocation entry in reloc_buf, which will be updated with the |
* target buffer's real offset on on command submission. |
* |
* Relocations remain in place for the lifetime of the buffer object. |
* |
* \param bo Buffer to write the relocation into. |
* \param offset Byte offset within reloc_bo of the pointer to |
* target_bo. |
* \param target_bo Buffer whose offset should be written into the |
* relocation entry. |
* \param target_offset Constant value to be added to target_bo's |
* offset in relocation entry. |
* \param read_domains GEM read domains which the buffer will be |
* read into by the command that this relocation |
* is part of. |
* \param write_domains GEM read domains which the buffer will be |
* dirtied in by the command that this |
* relocation is part of. |
*/ |
int (*bo_emit_reloc) (drm_intel_bo *bo, uint32_t offset, |
drm_intel_bo *target_bo, uint32_t target_offset, |
uint32_t read_domains, uint32_t write_domain); |
int (*bo_emit_reloc_fence)(drm_intel_bo *bo, uint32_t offset, |
drm_intel_bo *target_bo, |
uint32_t target_offset, |
uint32_t read_domains, |
uint32_t write_domain); |
|
/** Executes the command buffer pointed to by bo. */ |
int (*bo_exec) (drm_intel_bo *bo, int used, |
drm_clip_rect_t *cliprects, int num_cliprects, |
int DR4); |
|
/** Executes the command buffer pointed to by bo on the selected |
* ring buffer |
*/ |
int (*bo_mrb_exec) (drm_intel_bo *bo, int used, |
drm_clip_rect_t *cliprects, int num_cliprects, |
int DR4, unsigned flags); |
|
/** |
* Pin a buffer to the aperture and fix the offset until unpinned |
* |
* \param buf Buffer to pin |
* \param alignment Required alignment for aperture, in bytes |
*/ |
int (*bo_pin) (drm_intel_bo *bo, uint32_t alignment); |
|
/** |
* Unpin a buffer from the aperture, allowing it to be removed |
* |
* \param buf Buffer to unpin |
*/ |
int (*bo_unpin) (drm_intel_bo *bo); |
|
/** |
* Ask that the buffer be placed in tiling mode |
* |
* \param buf Buffer to set tiling mode for |
* \param tiling_mode desired, and returned tiling mode |
*/ |
int (*bo_set_tiling) (drm_intel_bo *bo, uint32_t * tiling_mode, |
uint32_t stride); |
|
/** |
* Get the current tiling (and resulting swizzling) mode for the bo. |
* |
* \param buf Buffer to get tiling mode for |
* \param tiling_mode returned tiling mode |
* \param swizzle_mode returned swizzling mode |
*/ |
int (*bo_get_tiling) (drm_intel_bo *bo, uint32_t * tiling_mode, |
uint32_t * swizzle_mode); |
|
/** |
* Create a visible name for a buffer which can be used by other apps |
* |
* \param buf Buffer to create a name for |
* \param name Returned name |
*/ |
int (*bo_flink) (drm_intel_bo *bo, uint32_t * name); |
|
/** |
* Returns 1 if mapping the buffer for write could cause the process |
* to block, due to the object being active in the GPU. |
*/ |
int (*bo_busy) (drm_intel_bo *bo); |
|
/** |
* Specify the volatility of the buffer. |
* \param bo Buffer to create a name for |
* \param madv The purgeable status |
* |
* Use I915_MADV_DONTNEED to mark the buffer as purgeable, and it will be |
* reclaimed under memory pressure. If you subsequently require the buffer, |
* then you must pass I915_MADV_WILLNEED to mark the buffer as required. |
* |
* Returns 1 if the buffer was retained, or 0 if it was discarded whilst |
* marked as I915_MADV_DONTNEED. |
*/ |
int (*bo_madvise) (drm_intel_bo *bo, int madv); |
|
int (*check_aperture_space) (drm_intel_bo ** bo_array, int count); |
|
/** |
* Disable buffer reuse for buffers which will be shared in some way, |
* as with scanout buffers. When the buffer reference count goes to |
* zero, it will be freed and not placed in the reuse list. |
* |
* \param bo Buffer to disable reuse for |
*/ |
int (*bo_disable_reuse) (drm_intel_bo *bo); |
|
/** |
* Query whether a buffer is reusable. |
* |
* \param bo Buffer to query |
*/ |
int (*bo_is_reusable) (drm_intel_bo *bo); |
|
/** |
* |
* Return the pipe associated with a crtc_id so that vblank |
* synchronization can use the correct data in the request. |
* This is only supported for KMS and gem at this point, when |
* unsupported, this function returns -1 and leaves the decision |
* of what to do in that case to the caller |
* |
* \param bufmgr the associated buffer manager |
* \param crtc_id the crtc identifier |
*/ |
// int (*get_pipe_from_crtc_id) (drm_intel_bufmgr *bufmgr, int crtc_id); |
|
/** Returns true if target_bo is in the relocation tree rooted at bo. */ |
int (*bo_references) (drm_intel_bo *bo, drm_intel_bo *target_bo); |
|
/**< Enables verbose debugging printouts */ |
int debug; |
}; |
|
struct _drm_intel_context { |
unsigned int ctx_id; |
struct _drm_intel_bufmgr *bufmgr; |
}; |
|
#define ALIGN(value, alignment) ((value + alignment - 1) & ~(alignment - 1)) |
#define ROUND_UP_TO(x, y) (((x) + (y) - 1) / (y) * (y)) |
#define ROUND_UP_TO_MB(x) ROUND_UP_TO((x), 1024*1024) |
|
#endif /* INTEL_BUFMGR_PRIV_H */ |