212 lines
7.5 KiB
C
212 lines
7.5 KiB
C
/**************************************************************************
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*
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* Copyright © 2007 Intel Corporation
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* Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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*
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**************************************************************************/
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/*
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* Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com>
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* Keith Whitwell <keithw-at-tungstengraphics-dot-com>
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* Eric Anholt <eric@anholt.net>
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*/
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#ifndef _DRI_BUFMGR_H_
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#define _DRI_BUFMGR_H_
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#include <xf86drm.h>
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typedef struct _dri_bufmgr dri_bufmgr;
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typedef struct _dri_bo dri_bo;
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typedef struct _dri_fence dri_fence;
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struct _dri_bo {
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/** Size in bytes of the buffer object. */
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unsigned long size;
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/**
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* Card virtual address (offset from the beginning of the aperture) for the
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* object. Only valid while validated.
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*/
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unsigned long offset;
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/**
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* Virtual address for accessing the buffer data. Only valid while mapped.
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*/
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void *virtual;
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/** Buffer manager context associated with this buffer object */
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dri_bufmgr *bufmgr;
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};
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struct _dri_fence {
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/**
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* This is an ORed mask of DRM_BO_FLAG_READ, DRM_BO_FLAG_WRITE, and
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* DRM_FLAG_EXE indicating the operations associated with this fence.
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*
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* It is constant for the life of the fence object.
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*/
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unsigned int type;
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/** Buffer manager context associated with this fence */
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dri_bufmgr *bufmgr;
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};
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/**
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* Context for a buffer manager instance.
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*
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* Contains public methods followed by private storage for the buffer manager.
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*/
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struct _dri_bufmgr {
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/**
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* Allocate a buffer object.
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*
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* Buffer objects are not necessarily initially mapped into CPU virtual
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* address space or graphics device aperture. They must be mapped using
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* bo_map() to be used by the CPU, and validated for use using bo_validate()
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* to be used from the graphics device.
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*/
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dri_bo *(*bo_alloc)(dri_bufmgr *bufmgr_ctx, const char *name,
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unsigned long size, unsigned int alignment,
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unsigned int location_mask);
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/**
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* Allocates a buffer object for a static allocation.
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*
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* Static allocations are ones such as the front buffer that are offered by
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* the X Server, which are never evicted and never moved.
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*/
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dri_bo *(*bo_alloc_static)(dri_bufmgr *bufmgr_ctx, const char *name,
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unsigned long offset, unsigned long size,
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void *virtual, unsigned int location_mask);
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/** Takes a reference on a buffer object */
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void (*bo_reference)(dri_bo *bo);
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/**
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* Releases a reference on a buffer object, freeing the data if
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* rerefences remain.
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*/
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void (*bo_unreference)(dri_bo *bo);
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/**
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* Maps the buffer into userspace.
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*
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* This function will block waiting for any existing fence on the buffer to
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* clear, first. The resulting mapping is available at buf->virtual.
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\ */
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int (*bo_map)(dri_bo *buf, GLboolean write_enable);
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/** Reduces the refcount on the userspace mapping of the buffer object. */
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int (*bo_unmap)(dri_bo *buf);
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/**
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* Makes the buffer accessible to the graphics chip.
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*
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* The resulting offset of the buffer within the graphics aperture is then
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* available at buf->offset until the buffer is fenced.
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*
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* Flags should consist of the memory types that the buffer may be validated
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* into and the read/write/exe flags appropriate to the use of the buffer.
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*/
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int (*bo_validate)(dri_bo *buf, unsigned int flags);
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/**
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* Associates the current set of validated buffers with a fence.
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*
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* Once fenced, the buffer manager will allow the validated buffers to be
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* evicted when the graphics device's execution has passed the fence
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* command.
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*
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* The fence object will have flags for the sum of the read/write/exe flags
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* of the validated buffers associated with it.
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*/
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dri_fence * (*fence_validated)(dri_bufmgr *bufmgr, const char *name,
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GLboolean flushed);
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/** Takes a reference on a fence object */
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void (*fence_reference)(dri_fence *fence);
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/**
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* Releases a reference on a fence object, freeing the data if
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* rerefences remain.
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*/
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void (*fence_unreference)(dri_fence *fence);
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/**
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* Blocks until the given fence is signaled.
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*/
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void (*fence_wait)(dri_fence *fence);
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/**
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* Tears down the buffer manager instance.
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*/
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void (*destroy)(dri_bufmgr *bufmgr);
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/**
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* Add relocation
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*/
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void (*emit_reloc)(dri_bo *batch_buf, GLuint flags, GLuint delta, GLuint offset, dri_bo *relocatee);
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void *(*process_relocs)(dri_bo *batch_buf, void *hack);
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void (*post_submit)(dri_bo *batch_buf, dri_fence **fence);
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};
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dri_bo *dri_bo_alloc(dri_bufmgr *bufmgr, const char *name, unsigned long size,
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unsigned int alignment, unsigned int location_mask);
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dri_bo *dri_bo_alloc_static(dri_bufmgr *bufmgr, const char *name,
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unsigned long offset, unsigned long size,
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void *virtual, unsigned int location_mask);
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void dri_bo_reference(dri_bo *bo);
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void dri_bo_unreference(dri_bo *bo);
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int dri_bo_map(dri_bo *buf, GLboolean write_enable);
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int dri_bo_unmap(dri_bo *buf);
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int dri_bo_validate(dri_bo *buf, unsigned int flags);
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dri_fence *dri_fence_validated(dri_bufmgr *bufmgr, const char *name,
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GLboolean flushed);
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void dri_fence_wait(dri_fence *fence);
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void dri_fence_reference(dri_fence *fence);
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void dri_fence_unreference(dri_fence *fence);
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void dri_bo_subdata(dri_bo *bo, unsigned long offset,
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unsigned long size, const void *data);
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void dri_bo_get_subdata(dri_bo *bo, unsigned long offset,
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unsigned long size, void *data);
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dri_bufmgr *dri_bufmgr_ttm_init(int fd, unsigned int fence_type,
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unsigned int fence_type_flush);
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void dri_bufmgr_fake_contended_lock_take(dri_bufmgr *bufmgr);
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dri_bufmgr *dri_bufmgr_fake_init(unsigned long low_offset, void *low_virtual,
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unsigned long size,
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unsigned int (*fence_emit)(void *private),
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int (*fence_wait)(void *private,
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unsigned int cookie),
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void *driver_priv);
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void dri_bufmgr_destroy(dri_bufmgr *bufmgr);
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dri_bo *dri_ttm_bo_create_from_handle(dri_bufmgr *bufmgr, const char *name,
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unsigned int handle);
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void dri_emit_reloc(dri_bo *batch_buf, GLuint flags, GLuint delta, GLuint offset, dri_bo *relocatee);
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void *dri_process_relocs(dri_bo *batch_buf, GLuint *hack);
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void dri_post_process_relocs(dri_bo *batch_buf);
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void dri_post_submit(dri_bo *batch_buf, dri_fence **last_fence);
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#endif
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