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/*
* Copyright 2007 Red Hat, Inc
* 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
* on 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 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 NON-INFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS AND/OR THEIR 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.
*/
#ifndef DRI_SAREA_H
#define DRI_SAREA_H
#include <drm.h>
/* The DRI2 SAREA holds a list of self-describing blocks. Each block
* is 8 byte aligned and has a common 32-bit header word. The upper
* 16 bits describe the type of the block and the lower 16 bits the
* size. DRI2 only defines a couple of blocks and allows drivers to
* define driver specific blocks using type codes from 0x8000 and up.
* The type code 0x0000 defines the end of the sarea. */
#define DRI2_SAREA_BLOCK_HEADER(type, size) (((type) << 16) | (size))
#define DRI2_SAREA_BLOCK_TYPE(b) ((b) >> 16)
#define DRI2_SAREA_BLOCK_SIZE(b) ((b) & 0xffff)
#define DRI2_SAREA_BLOCK_NEXT(p) \
((void *) ((unsigned char *) (p) + \
DRI2_SAREA_BLOCK_SIZE(*(unsigned int *) p)))
#define DRI2_SAREA_BLOCK_END 0x0000
#define DRI2_SAREA_BLOCK_LOCK 0x0001
#define DRI2_SAREA_BLOCK_EVENT_BUFFER 0x0002
/* Chipset specific blocks start at 0x8000, 0xffff is reserved. */
typedef struct __DRILock __DRILock;
typedef struct __DRIEventBuffer __DRIEventBuffer;
typedef struct __DRIDrawableBuffer __DRIDrawableBuffer;
typedef struct __DRIDrawableConfigEvent __DRIDrawableConfigEvent;
typedef struct __DRIBufferAttachEvent __DRIBufferAttachEvent;
struct __DRILock {
unsigned int block_header;
drm_hw_lock_t lock;
/* We use this with DRM_CAS to allocate lock IDs for the real lock.*/
unsigned int next_id;
};
struct __DRIEventBuffer {
unsigned int block_header;
unsigned int head; /* last valid event */
unsigned int prealloc; /* event currently being written */
unsigned int size; /* size of data */
unsigned char data[0];
};
enum {
/* the four standard color buffers */
DRI_DRAWABLE_BUFFER_FRONT_LEFT = 0,
DRI_DRAWABLE_BUFFER_BACK_LEFT = 1,
DRI_DRAWABLE_BUFFER_FRONT_RIGHT = 2,
DRI_DRAWABLE_BUFFER_BACK_RIGHT = 3,
/* optional aux buffer */
DRI_DRAWABLE_BUFFER_AUX0 = 4,
DRI_DRAWABLE_BUFFER_AUX1 = 5,
DRI_DRAWABLE_BUFFER_AUX2 = 6,
DRI_DRAWABLE_BUFFER_AUX3 = 7,
DRI_DRAWABLE_BUFFER_DEPTH = 8,
DRI_DRAWABLE_BUFFER_STENCIL = 9,
DRI_DRAWABLE_BUFFER_ACCUM = 10,
/* generic renderbuffers */
DRI_DRAWABLE_BUFFER_COLOR0 = 11,
DRI_DRAWABLE_BUFFER_COLOR1 = 12,
DRI_DRAWABLE_BUFFER_COLOR2 = 13,
DRI_DRAWABLE_BUFFER_COLOR3 = 14,
DRI_DRAWABLE_BUFFER_COLOR4 = 15,
DRI_DRAWABLE_BUFFER_COLOR5 = 16,
DRI_DRAWABLE_BUFFER_COLOR6 = 17,
DRI_DRAWABLE_BUFFER_COLOR7 = 18,
DRI_DRAWABLE_BUFFER_COUNT = 19
};
struct __DRIDrawableBuffer {
unsigned int attachment;
unsigned int handle;
unsigned int pitch;
unsigned short cpp;
/* Upper 8 bits are driver specific, lower 8 bits generic. The
* bits can inidicate buffer properties such as tiled, swizzled etc. */
unsigned short flags;
};
#define DRI2_EVENT_HEADER(type, size) (((type) << 16) | (size))
#define DRI2_EVENT_TYPE(b) ((b) >> 16)
#define DRI2_EVENT_SIZE(b) ((b) & 0xffff)
#define DRI2_EVENT_PAD 0x0000
#define DRI2_EVENT_DRAWABLE_CONFIG 0x0001
#define DRI2_EVENT_BUFFER_ATTACH 0x0002
struct __DRIDrawableConfigEvent {
unsigned int event_header;
unsigned int drawable;
short x;
short y;
unsigned int width;
unsigned int height;
unsigned int num_rects;
struct drm_clip_rect rects[0];
};
struct __DRIBufferAttachEvent {
unsigned int event_header;
unsigned int drawable;
__DRIDrawableBuffer buffer;
};
#endif /* DRI_SAREA_H */
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