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/**************************************************************************
*
* Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., 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: Keith Whitwell <keithw-at-tungstengraphics-dot-com>
*/
#include <stdlib.h>
#include <xf86drm.h>
#include "ws_dri_bufpool.h"
#include "ws_dri_bufmgr.h"
#include "intel_context.h"
#include "intel_batchbuffer.h"
#include "intel_winsys.h"
#include "pipe/p_util.h"
#include "pipe/p_winsys.h"
#include "i915simple/i915_winsys.h"
#include "i915simple/i915_screen.h"
struct intel_i915_winsys {
struct i915_winsys winsys; /**< batch buffer funcs */
struct pipe_winsys *pws;
struct intel_context *intel;
};
/* Turn a i915simple winsys into an intel/i915simple winsys:
*/
static inline struct intel_i915_winsys *
intel_i915_winsys( struct i915_winsys *sws )
{
return (struct intel_i915_winsys *)sws;
}
/* Simple batchbuffer interface:
*/
static unsigned *intel_i915_batch_start( struct i915_winsys *sws,
unsigned dwords,
unsigned relocs )
{
struct intel_context *intel = intel_i915_winsys(sws)->intel;
/* XXX: check relocs.
*/
if (intel_batchbuffer_space( intel->batch ) >= dwords * 4) {
/* XXX: Hmm, the driver can't really do much with this pointer:
*/
return (unsigned *)intel->batch->ptr;
}
else
return NULL;
}
static void intel_i915_batch_dword( struct i915_winsys *sws,
unsigned dword )
{
struct intel_context *intel = intel_i915_winsys(sws)->intel;
intel_batchbuffer_emit_dword( intel->batch, dword );
}
static void intel_i915_batch_reloc( struct i915_winsys *sws,
struct pipe_buffer *buf,
unsigned access_flags,
unsigned delta )
{
struct intel_context *intel = intel_i915_winsys(sws)->intel;
unsigned flags = DRM_BO_FLAG_MEM_TT;
unsigned mask = DRM_BO_MASK_MEM;
if (access_flags & I915_BUFFER_ACCESS_WRITE) {
flags |= DRM_BO_FLAG_WRITE;
mask |= DRM_BO_FLAG_WRITE;
}
if (access_flags & I915_BUFFER_ACCESS_READ) {
flags |= DRM_BO_FLAG_READ;
mask |= DRM_BO_FLAG_READ;
}
#if 0 /* JB old */
intel_batchbuffer_emit_reloc( intel->batch,
dri_bo( buf ),
flags, mask,
delta );
#else /* new */
intel_offset_relocation( intel->batch,
delta,
dri_bo( buf ),
flags,
mask );
#endif
}
static void intel_i915_batch_flush( struct i915_winsys *sws,
struct pipe_fence_handle **fence )
{
struct intel_i915_winsys *iws = intel_i915_winsys(sws);
struct intel_context *intel = iws->intel;
union {
struct _DriFenceObject *dri;
struct pipe_fence_handle *pipe;
} fu;
if (fence)
assert(!*fence);
fu.dri = intel_batchbuffer_flush( intel->batch );
if (!fu.dri) {
assert(0);
*fence = NULL;
return;
}
if (fu.dri) {
if (fence)
*fence = fu.pipe;
else
driFenceUnReference(&fu.dri);
}
}
/**
* Create i915 hardware rendering context.
*/
struct pipe_context *
intel_create_i915simple( struct intel_context *intel,
struct pipe_winsys *winsys )
{
struct intel_i915_winsys *iws = CALLOC_STRUCT( intel_i915_winsys );
struct pipe_screen *screen;
/* Fill in this struct with callbacks that i915simple will need to
* communicate with the window system, buffer manager, etc.
*/
iws->winsys.batch_start = intel_i915_batch_start;
iws->winsys.batch_dword = intel_i915_batch_dword;
iws->winsys.batch_reloc = intel_i915_batch_reloc;
iws->winsys.batch_flush = intel_i915_batch_flush;
iws->pws = winsys;
iws->intel = intel;
screen = i915_create_screen(winsys, PCI_CHIP_I945_GM);
assert(screen);
/* Create the i915simple context:
*/
return i915_create_context( screen,
winsys,
&iws->winsys );
}
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