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/*
* Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
* Copyright 2001-2003 S3 Graphics, 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
* 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
* VIA, S3 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.
*/
#ifndef _VIAIOCTL_H
#define _VIAIOCTL_H
#include "via_context.h"
void viaFinishPrimitive(struct via_context *vmesa);
void viaFlushDma(struct via_context *vmesa);
void viaFlushDmaLocked(struct via_context *vmesa, GLuint flags);
void viaInitIoctlFuncs(GLcontext *ctx);
void viaCopyBuffer(__DRIdrawable *dpriv);
void viaPageFlip(__DRIdrawable *dpriv);
void viaCheckDma(struct via_context *vmesa, GLuint bytes);
void viaResetPageFlippingLocked(struct via_context *vmesa);
void viaWaitIdle(struct via_context *vmesa, GLboolean light);
void viaWaitIdleLocked(struct via_context *vmesa, GLboolean light);
GLboolean viaCheckBreadcrumb( struct via_context *vmesa, GLuint value );
void viaEmitBreadcrumb( struct via_context *vmesa );
#define VIA_FINISH_PRIM(vmesa) do { \
if (vmesa->dmaLastPrim) \
viaFinishPrimitive( vmesa ); \
} while (0)
#define VIA_FLUSH_DMA(vmesa) do { \
VIA_FINISH_PRIM(vmesa); \
if (vmesa->dmaLow) \
viaFlushDma(vmesa); \
} while (0)
void viaWrapPrimitive( struct via_context *vmesa );
static INLINE GLuint *viaAllocDma(struct via_context *vmesa, int bytes)
{
if (vmesa->dmaLow + bytes > VIA_DMA_HIGHWATER) {
viaFlushDma(vmesa);
}
{
GLuint *start = (GLuint *)(vmesa->dma + vmesa->dmaLow);
vmesa->dmaLow += bytes;
return start;
}
}
static GLuint INLINE *viaExtendPrimitive(struct via_context *vmesa, int bytes)
{
if (vmesa->dmaLow + bytes > VIA_DMA_HIGHWATER) {
viaWrapPrimitive(vmesa);
}
{
GLuint *start = (GLuint *)(vmesa->dma + vmesa->dmaLow);
vmesa->dmaLow += bytes;
return start;
}
}
#define RING_VARS GLuint *_vb = 0, _nr, _x;
#define BEGIN_RING(n) do { \
if (_vb != 0) abort(); \
_vb = viaAllocDma(vmesa, (n) * sizeof(GLuint)); \
_nr = (n); \
_x = 0; \
} while (0)
#define BEGIN_RING_NOCHECK(n) do { \
if (_vb != 0) abort(); \
_vb = (GLuint *)(vmesa->dma + vmesa->dmaLow); \
vmesa->dmaLow += (n) * sizeof(GLuint); \
_nr = (n); \
_x = 0; \
} while (0)
#define OUT_RING(n) _vb[_x++] = (n)
#define ADVANCE_RING() do { \
if (_x != _nr) abort(); \
_vb = 0; \
} while (0)
#define ADVANCE_RING_VARIABLE() do { \
if (_x > _nr) abort(); \
vmesa->dmaLow -= (_nr - _x) * sizeof(GLuint); \
_vb = 0; \
} while (0)
#define QWORD_PAD_RING() do { \
if (vmesa->dmaLow & 0x4) { \
BEGIN_RING(1); \
OUT_RING(HC_DUMMY); \
ADVANCE_RING(); \
} \
} while (0)
#define VIA_GEQ_WRAP(left, right) \
(((left) - (right)) < ( 1 << 23))
#endif
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