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/*
* Copyright (C) Thomas Hellstrom (2005)
*
* 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
* THE AUTHORS OR COPYRIGHT HOLDERS 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 VIA_DMABUFFER_H
#define VIA_DMABUFFER_H
#include "via_3d_reg.h"
typedef struct _ViaCommandBuffer
{
ScrnInfoPtr pScrn;
CARD32 *buf;
CARD32 waitFlags;
unsigned pos;
unsigned bufSize;
int mode;
int header_start;
int rindex;
Bool has3dState;
void (*flushFunc) (struct _ViaCommandBuffer * cb);
} ViaCommandBuffer;
#define VIA_DMASIZE 16384
#define H1_ADDR(val) (((val) >> 2) | 0xF0000000)
#define WAITFLAGS(flags) \
(cb)->waitFlags |= (flags)
#define BEGIN_RING(size) \
do { \
if (cb->flushFunc && (cb->pos > (cb->bufSize-(size)))) { \
cb->flushFunc(cb); \
} \
} while(0)
#define BEGIN_H2(paraType, h2size) \
do{ \
BEGIN_RING((h2size)+6); \
if (cb->mode == 2 && (paraType) == cb->rindex) \
break; \
if (cb->pos & 1) \
OUT_RING(HC_DUMMY); \
cb->header_start = cb->pos; \
cb->rindex = paraType; \
cb->mode = 2; \
OUT_RING(HALCYON_HEADER2); \
OUT_RING((paraType) << 16); \
if (!cb->has3dState && ((paraType) != HC_ParaType_CmdVdata)) { \
cb->has3dState = TRUE; \
} \
} while(0);
#define OUT_RING(val) do{ \
(cb)->buf[(cb)->pos++] = (val); \
} while(0);
#define OUT_RING_QW(val1, val2) \
do { \
(cb)->buf[(cb)->pos++] = (val1); \
(cb)->buf[(cb)->pos++] = (val2); \
} while (0)
#define ADVANCE_RING \
cb->flushFunc(cb)
#define RING_VARS \
ViaCommandBuffer *cb = &pVia->cb
#define OUT_RING_H1(val1, val2) \
OUT_RING_QW(H1_ADDR(val1), val2)
#define OUT_RING_SubA(val1, val2) \
OUT_RING(((val1) << HC_SubA_SHIFT) | ((val2) & HC_Para_MASK))
extern int viaSetupCBuffer(ScrnInfoPtr pScrn, ViaCommandBuffer * buf,
unsigned size);
extern void viaTearDownCBuffer(ViaCommandBuffer * buf);
extern void viaFlushPCI(ViaCommandBuffer * buf);
#endif
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