1 /* 2 * Copyright (C) Thomas Hellstrom (2005) 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sub license, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the 12 * next paragraph) shall be included in all copies or substantial portions 13 * of the Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 21 * DEALINGS IN THE SOFTWARE. 22 */ 23 24 #ifndef VIA_DMABUFFER_H 25 #define VIA_DMABUFFER_H 26 27 #include "via_3d_reg.h" 28 29 typedef struct _ViaCommandBuffer 30 { 31 ScrnInfoPtr pScrn; 32 CARD32 *buf; 33 CARD32 waitFlags; 34 unsigned pos; 35 unsigned bufSize; 36 int mode; 37 int header_start; 38 int rindex; 39 Bool has3dState; 40 void (*flushFunc) (struct _ViaCommandBuffer * cb); 41 } ViaCommandBuffer; 42 43 #define VIA_DMASIZE 16384 44 45 #define H1_ADDR(val) (((val) >> 2) | 0xF0000000) 46 #define WAITFLAGS(flags) \ 47 (cb)->waitFlags |= (flags) 48 49 #define BEGIN_RING(size) \ 50 do { \ 51 if (cb->flushFunc && (cb->pos > (cb->bufSize-(size)))) { \ 52 cb->flushFunc(cb); \ 53 } \ 54 } while(0) 55 56 #define BEGIN_H2(paraType, h2size) \ 57 do{ \ 58 BEGIN_RING((h2size)+6); \ 59 if (cb->mode == 2 && (paraType) == cb->rindex) \ 60 break; \ 61 if (cb->pos & 1) \ 62 OUT_RING(HC_DUMMY); \ 63 cb->header_start = cb->pos; \ 64 cb->rindex = paraType; \ 65 cb->mode = 2; \ 66 OUT_RING(HALCYON_HEADER2); \ 67 OUT_RING((paraType) << 16); \ 68 if (!cb->has3dState && ((paraType) != HC_ParaType_CmdVdata)) { \ 69 cb->has3dState = TRUE; \ 70 } \ 71 } while(0); 72 73 #define OUT_RING(val) do{ \ 74 (cb)->buf[(cb)->pos++] = (val); \ 75 } while(0); 76 77 #define OUT_RING_QW(val1, val2) \ 78 do { \ 79 (cb)->buf[(cb)->pos++] = (val1); \ 80 (cb)->buf[(cb)->pos++] = (val2); \ 81 } while (0) 82 83 #define ADVANCE_RING \ 84 cb->flushFunc(cb) 85 86 #define RING_VARS \ 87 ViaCommandBuffer *cb = &pVia->cb 88 89 #define OUT_RING_H1(val1, val2) \ 90 OUT_RING_QW(H1_ADDR(val1), val2) 91 92 #define OUT_RING_SubA(val1, val2) \ 93 OUT_RING(((val1) << HC_SubA_SHIFT) | ((val2) & HC_Para_MASK)) 94 95 #endif 96