96 lines
2.8 KiB
C
96 lines
2.8 KiB
C
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/*
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* Copyright (C) Thomas Hellstrom (2005)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sub license,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#ifndef VIA_DMABUFFER_H
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#define VIA_DMABUFFER_H
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#include "via_3d_reg.h"
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typedef struct _ViaCommandBuffer
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{
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ScrnInfoPtr pScrn;
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CARD32 *buf;
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CARD32 waitFlags;
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unsigned pos;
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unsigned bufSize;
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int mode;
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int header_start;
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int rindex;
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Bool has3dState;
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void (*flushFunc) (struct _ViaCommandBuffer * cb);
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} ViaCommandBuffer;
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#define VIA_DMASIZE 16384
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#define H1_ADDR(val) (((val) >> 2) | 0xF0000000)
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#define WAITFLAGS(flags) \
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(cb)->waitFlags |= (flags)
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#define BEGIN_RING(size) \
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do { \
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if (cb->flushFunc && (cb->pos > (cb->bufSize-(size)))) { \
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cb->flushFunc(cb); \
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} \
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} while(0)
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#define BEGIN_H2(paraType, h2size) \
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do{ \
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BEGIN_RING((h2size)+6); \
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if (cb->mode == 2 && (paraType) == cb->rindex) \
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break; \
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if (cb->pos & 1) \
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OUT_RING(HC_DUMMY); \
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cb->header_start = cb->pos; \
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cb->rindex = paraType; \
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cb->mode = 2; \
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OUT_RING(HALCYON_HEADER2); \
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OUT_RING((paraType) << 16); \
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if (!cb->has3dState && ((paraType) != HC_ParaType_CmdVdata)) { \
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cb->has3dState = TRUE; \
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} \
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} while(0);
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#define OUT_RING(val) do{ \
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(cb)->buf[(cb)->pos++] = (val); \
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} while(0);
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#define OUT_RING_QW(val1, val2) \
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do { \
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(cb)->buf[(cb)->pos++] = (val1); \
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(cb)->buf[(cb)->pos++] = (val2); \
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} while (0)
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#define ADVANCE_RING \
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cb->flushFunc(cb)
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#define RING_VARS \
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ViaCommandBuffer *cb = &pVia->cb
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#define OUT_RING_H1(val1, val2) \
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OUT_RING_QW(H1_ADDR(val1), val2)
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#define OUT_RING_SubA(val1, val2) \
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OUT_RING(((val1) << HC_SubA_SHIFT) | ((val2) & HC_Para_MASK))
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#endif
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