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/**************************************************************************
*
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
* 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 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 TUNGSTEN GRAPHICS 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.
*
**************************************************************************/
/**
* \file
* This is the interface that i965simple requires any window system
* hosting it to implement. This is the only include file in i965simple
* which is public.
*
*/
#ifndef BRW_WINSYS_H
#define BRW_WINSYS_H
#include "pipe/p_defines.h"
/* Pipe drivers are (meant to be!) independent of both GL and the
* window system. The window system provides a buffer manager and a
* set of additional hooks for things like command buffer submission,
* etc.
*
* There clearly has to be some agreement between the window system
* driver and the hardware driver about the format of command buffers,
* etc.
*/
struct pipe_buffer;
struct pipe_fence_handle;
struct pipe_winsys;
struct pipe_screen;
/* The pipe driver currently understands the following chipsets:
*/
#define PCI_CHIP_I965_G 0x29A2
#define PCI_CHIP_I965_Q 0x2992
#define PCI_CHIP_I965_G_1 0x2982
#define PCI_CHIP_I965_GM 0x2A02
#define PCI_CHIP_I965_GME 0x2A12
/* These are the names of all the state caches managed by the driver.
*
* When data is uploaded to a buffer with buffer_subdata, we use the
* special version of that function below so that information about
* what type of data this is can be passed to the winsys backend.
* That in turn allows the correct flags to be set in the aub file
* dump to allow human-readable file dumps later on.
*/
enum brw_cache_id {
BRW_CC_VP,
BRW_CC_UNIT,
BRW_WM_PROG,
BRW_SAMPLER_DEFAULT_COLOR,
BRW_SAMPLER,
BRW_WM_UNIT,
BRW_SF_PROG,
BRW_SF_VP,
BRW_SF_UNIT,
BRW_VS_UNIT,
BRW_VS_PROG,
BRW_GS_UNIT,
BRW_GS_PROG,
BRW_CLIP_VP,
BRW_CLIP_UNIT,
BRW_CLIP_PROG,
BRW_SS_SURFACE,
BRW_SS_SURF_BIND,
BRW_MAX_CACHE
};
#define BRW_CONSTANT_BUFFER BRW_MAX_CACHE
/**
* Additional winsys interface for i965simple.
*
* It is an over-simple batchbuffer mechanism. Will want to improve the
* performance of this, perhaps based on the cmdstream stuff. It
* would be pretty impossible to implement swz on top of this
* interface.
*
* Will also need additions/changes to implement static/dynamic
* indirect state.
*/
struct brw_winsys {
/**
* Reserve space on batch buffer.
*
* Returns a null pointer if there is insufficient space in the batch buffer
* to hold the requested number of dwords and relocations.
*
* The number of dwords should also include the number of relocations.
*/
unsigned *(*batch_start)(struct brw_winsys *sws,
unsigned dwords,
unsigned relocs);
void (*batch_dword)(struct brw_winsys *sws,
unsigned dword);
/**
* Emit a relocation to a buffer.
*
* Used not only when the buffer addresses are not pinned, but also to
* ensure refered buffers will not be destroyed until the current batch
* buffer execution is finished.
*
* The access flags is a combination of I915_BUFFER_ACCESS_WRITE and
* I915_BUFFER_ACCESS_READ macros.
*/
void (*batch_reloc)(struct brw_winsys *sws,
struct pipe_buffer *buf,
unsigned access_flags,
unsigned delta);
/* Not used yet, but really want this:
*/
void (*batch_end)( struct brw_winsys *sws );
/**
* Flush the batch buffer.
*
* Fence argument must point to NULL or to a previous fence, and the caller
* must call fence_reference when done with the fence.
*/
void (*batch_flush)(struct brw_winsys *sws,
struct pipe_fence_handle **fence);
/* A version of buffer_subdata that includes information for the
* simulator:
*/
void (*buffer_subdata_typed)(struct brw_winsys *sws,
struct pipe_buffer *buf,
unsigned long offset,
unsigned long size,
const void *data,
unsigned data_type);
/* A cheat so we don't have to think about relocations in a couple
* of places yet:
*/
unsigned (*get_buffer_offset)( struct brw_winsys *sws,
struct pipe_buffer *buf,
unsigned flags );
};
#define BRW_BUFFER_ACCESS_WRITE 0x1
#define BRW_BUFFER_ACCESS_READ 0x2
#define BRW_BUFFER_USAGE_LIT_VERTEX (PIPE_BUFFER_USAGE_CUSTOM << 0)
struct pipe_context *brw_create(struct pipe_screen *,
struct brw_winsys *,
unsigned pci_id);
static inline boolean brw_batchbuffer_data(struct brw_winsys *winsys,
const void *data,
unsigned bytes)
{
static const unsigned incr = sizeof(unsigned);
uint i;
const unsigned *udata = (const unsigned*)(data);
unsigned size = bytes/incr;
winsys->batch_start(winsys, size, 0);
for (i = 0; i < size; ++i) {
winsys->batch_dword(winsys, udata[i]);
}
winsys->batch_end(winsys);
return (i == size);
}
#endif
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