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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 "dri_bufpool.h"
#include "dri_bufmgr.h"
#include "intel_context.h"
#include "intel_batchbuffer.h"
#include "intel_winsys.h"
#include "pipe/i915simple/i915_winsys.h"
struct intel_i915_winsys {
struct i915_winsys winsys;
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_handle *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;
}
intel_batchbuffer_emit_reloc( intel->batch,
dri_bo( buf ),
flags, mask,
delta );
}
static void intel_i915_batch_flush( struct i915_winsys *sws )
{
struct intel_context *intel = intel_i915_winsys(sws)->intel;
intel_batchbuffer_flush( intel->batch );
// if (0) intel_i915_batch_wait_idle( sws );
}
static struct pipe_region *
intel_i915_region_alloc(struct pipe_winsys *winsys,
unsigned cpp, unsigned width,
unsigned height, unsigned flags)
{
struct pipe_region *region = calloc(sizeof(*region), 1);
const unsigned alignment = 64;
/* Choose a pitch to match hardware requirements - requires 64 byte
* alignment of render targets.
*
* XXX: is this ok for textures??
* clearly want to be able to render to textures under some
* circumstances, but maybe not always a requirement.
*/
unsigned pitch;
/* XXX is the pitch different for textures vs. drawables? */
if (flags & PIPE_SURFACE_FLAG_TEXTURE) /* or PIPE_SURFACE_FLAG_RENDER? */
pitch = ((cpp * width + 63) & ~63) / cpp;
else
pitch = ((cpp * width + 63) & ~63) / cpp;
region->cpp = cpp;
region->pitch = pitch;
region->height = height; /* needed? */
region->refcount = 1;
region->buffer = winsys->buffer_create( winsys, alignment );
winsys->buffer_data( winsys,
region->buffer,
pitch * cpp * height,
NULL );
return region;
}
static void
intel_i915_region_release(struct pipe_winsys *winsys,
struct pipe_region **region)
{
if (!*region)
return;
assert((*region)->refcount > 0);
(*region)->refcount--;
if ((*region)->refcount == 0) {
assert((*region)->map_refcount == 0);
winsys->buffer_reference( winsys,
&((*region)->buffer), NULL );
free(*region);
}
*region = NULL;
}
struct pipe_context *
intel_create_i915simple( struct intel_context *intel )
{
struct intel_i915_winsys *iws = CALLOC_STRUCT( intel_i915_winsys );
/* 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->intel = intel;
iws->winsys.region_alloc = intel_i915_region_alloc;
iws->winsys.region_release = intel_i915_region_release;
/* Create the i915simple context:
*/
return i915_create( intel_create_pipe_winsys(intel),
&iws->winsys,
intel->intelScreen->deviceID );
}
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