src/mesa/drivers/dri/sis/sis_alloc.c

   1 /**************************************************************************
   2
   3 Copyright 2000 Silicon Integrated Systems Corp, Inc., HsinChu, Taiwan.
   4 Copyright 2003 Eric Anholt
   5 All Rights Reserved.
   6
   7 Permission is hereby granted, free of charge, to any person obtaining a
   8 copy of this software and associated documentation files (the "Software"),
   9 to deal in the Software without restriction, including without limitation
  10 on the rights to use, copy, modify, merge, publish, distribute, sub
  11 license, and/or sell copies of the Software, and to permit persons to whom
  12 the Software is furnished to do so, subject to the following conditions:
  13
  14 The above copyright notice and this permission notice (including the next
  15 paragraph) shall be included in all copies or substantial portions of the
  16 Software.
  17
  18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20 FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  21 ERIC ANHOLT OR SILICON INTEGRATED SYSTEMS CORP BE LIABLE FOR ANY CLAIM,
  22 DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  23 OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  24 USE OR OTHER DEALINGS IN THE SOFTWARE.
  25
  26 **************************************************************************/
  27 /* $XFree86: xc/lib/GL/mesa/src/drv/sis/sis_alloc.c,v 1.7 2001/01/08 01:07:29 martin Exp $ */
  28
  29 /*
  30  * Authors:
  31  *   Sung-Ching Lin <sclin@sis.com.tw>
  32  *   Eric Anholt <anholt@FreeBSD.org>
  33  */
  34
  35 #include "sis_context.h"
  36 #include "sis_alloc.h"
  37
  38 #include "sis_common.h"
  39
  40 #include <unistd.h>
  41
  42 #define Z_BUFFER_HW_ALIGNMENT 16
  43 #define Z_BUFFER_HW_PLUS (16 + 4)
  44
  45 /* 3D engine uses 2, and bitblt uses 4 */
  46 #define DRAW_BUFFER_HW_ALIGNMENT 16
  47 #define DRAW_BUFFER_HW_PLUS (16 + 4)
  48
  49 #define ALIGNMENT(value, align) (((value) + (align) - 1) / (align) * (align))
  50
  51 static int _total_video_memory_used = 0;
  52 static int _total_video_memory_count = 0;
  53
  54 void *
  55 sisAllocFB( sisContextPtr smesa, GLuint size, void **handle )
  56 {
  57    drm_sis_mem_t fb;
  58
  59    _total_video_memory_used += size;
  60
  61    fb.context = smesa->hHWContext;
  62    fb.size = size;
  63    if (drmCommandWriteRead( smesa->driFd, DRM_SIS_FB_ALLOC, &fb,
  64       sizeof(drm_sis_mem_t) ) || fb.offset == 0)
  65    {
  66       return NULL;
  67    }
  68    *handle = (void *)fb.free;
  69
  70    if (SIS_VERBOSE & VERBOSE_SIS_MEMORY) {
  71       fprintf(stderr, "sisAllocFB: size=%d, offset=%lu, pid=%d, count=%d\n",
  72               size, fb.offset, (GLint)getpid(),
  73               ++_total_video_memory_count);
  74    }
  75
  76    return (void *)(smesa->FbBase + fb.offset);
  77 }
  78
  79 void
  80 sisFreeFB( sisContextPtr smesa, void *handle )
  81 {
  82    drm_sis_mem_t fb;
  83
  84    if (SIS_VERBOSE & VERBOSE_SIS_MEMORY) {
  85       fprintf(stderr, "sisFreeFB: free=%p, pid=%d, count=%d\n",
  86               handle, (GLint)getpid(), --_total_video_memory_count);
  87    }
  88
  89    fb.context = smesa->hHWContext;
  90    fb.free = handle;
  91    drmCommandWrite( smesa->driFd, DRM_SIS_FB_FREE, &fb, sizeof(drm_sis_mem_t) );
  92 }
  93
  94 void *
  95 sisAllocAGP( sisContextPtr smesa, GLuint size, void **handle )
  96 {
  97    drm_sis_mem_t agp;
  98
  99    if (smesa->AGPSize == 0)
 100       return NULL;
 101
 102    agp.context = smesa->hHWContext;
 103    agp.size = size;
 104    if (drmCommandWriteRead( smesa->driFd, DRM_SIS_AGP_ALLOC, &agp,
 105       sizeof(drm_sis_mem_t) ) || agp.offset == 0)
 106    {
 107       return NULL;
 108    }
 109    *handle = (void *)agp.free;
 110
 111    if (SIS_VERBOSE & VERBOSE_SIS_MEMORY) {
 112       fprintf(stderr, "sisAllocAGP: size=%u, offset=%lu, pid=%d, count=%d\n",
 113               size, agp.offset, (GLint)getpid(),
 114               ++_total_video_memory_count);
 115    }
 116
 117    return (void *)(smesa->AGPBase + agp.offset);
 118 }
 119
 120 void
 121 sisFreeAGP( sisContextPtr smesa, void *handle )
 122 {
 123    drm_sis_mem_t agp;
 124
 125    if (SIS_VERBOSE & VERBOSE_SIS_MEMORY) {
 126       fprintf(stderr, "sisFreeAGP: free=%p, pid=%d, count=%d\n",
 127               handle, (GLint)getpid(), --_total_video_memory_count);
 128    }
 129
 130    agp.context = smesa->hHWContext;
 131    agp.free = handle;
 132    drmCommandWrite( smesa->driFd, DRM_SIS_AGP_FREE, &agp,
 133       sizeof(drm_sis_mem_t) );
 134 }
 135
 136 void
 137 sisAllocZStencilBuffer( sisContextPtr smesa )
 138 {
 139    GLuint z_depth;
 140    GLuint totalBytes;
 141    int width2;
 142
 143    GLubyte *addr;
 144
 145    z_depth = ( smesa->glCtx->Visual.depthBits +
 146                smesa->glCtx->Visual.stencilBits ) / 8;
 147
 148    width2 = ALIGNMENT( smesa->width * z_depth, 4 );
 149
 150    totalBytes = smesa->height * width2 + Z_BUFFER_HW_PLUS;
 151
 152    addr = sisAllocFB( smesa, totalBytes, &smesa->zbFree );
 153    if (addr == NULL)
 154       sis_fatal_error("Failure to allocate Z buffer.\n");
 155
 156    if (SIS_VERBOSE & VERBOSE_SIS_BUFFER) {
 157       fprintf(stderr, "sis_alloc_z_stencil_buffer: addr=%p\n", addr);
 158    }
 159
 160    addr = (GLubyte *)ALIGNMENT( (unsigned long)addr, Z_BUFFER_HW_ALIGNMENT );
 161
 162    smesa->depthbuffer = (void *) addr;
 163    smesa->depthPitch = width2;
 164    smesa->depthOffset = (unsigned long)addr - (unsigned long)smesa->FbBase;
 165
 166    /* set pZClearPacket */
 167    memset( &smesa->zClearPacket, 0, sizeof(ENGPACKET) );
 168
 169    smesa->zClearPacket.dwSrcPitch = (z_depth == 2) ? 0x80000000 : 0xf0000000;
 170    smesa->zClearPacket.dwDestBaseAddr = (unsigned long)(addr -
 171       (unsigned long)smesa->FbBase);
 172    smesa->zClearPacket.wDestPitch = width2;
 173    smesa->zClearPacket.stdwDestPos.wY = 0;
 174    smesa->zClearPacket.stdwDestPos.wX = 0;
 175
 176    smesa->zClearPacket.wDestHeight = smesa->virtualY;
 177    smesa->zClearPacket.stdwDim.wWidth = (GLshort)width2 / z_depth;
 178    smesa->zClearPacket.stdwDim.wHeight = (GLshort)smesa->height;
 179    smesa->zClearPacket.stdwCmd.cRop = 0xf0;
 180
 181    if (smesa->blockWrite)
 182       smesa->zClearPacket.stdwCmd.cCmd0 = CMD0_PAT_FG_COLOR;
 183    else
 184       smesa->zClearPacket.stdwCmd.cCmd0 = 0;
 185    smesa->zClearPacket.stdwCmd.cCmd1 = CMD1_DIR_X_INC | CMD1_DIR_Y_INC;
 186 }
 187
 188 void
 189 sisFreeZStencilBuffer( sisContextPtr smesa )
 190 {
 191    sisFreeFB( smesa, smesa->zbFree );
 192    smesa->zbFree = NULL;
 193    smesa->depthbuffer = NULL;
 194 }
 195
 196 void
 197 sisAllocBackbuffer( sisContextPtr smesa )
 198 {
 199    GLuint depth = smesa->bytesPerPixel;
 200    GLuint size, width2;
 201
 202    char *addr;
 203
 204    width2 = (depth == 2) ? ALIGNMENT (smesa->width, 2) : smesa->width;
 205    size = width2 * smesa->height * depth + DRAW_BUFFER_HW_PLUS;
 206
 207    /* Fixme: unique context alloc/free back-buffer? */
 208    addr = sisAllocFB( smesa, size, &smesa->bbFree );
 209    if (addr == NULL)
 210       sis_fatal_error("Failure to allocate back buffer.\n");
 211
 212    addr = (char *)ALIGNMENT( (unsigned long)addr, DRAW_BUFFER_HW_ALIGNMENT );
 213
 214    smesa->backbuffer = addr;
 215    smesa->backOffset = (unsigned long)(addr - (unsigned long)smesa->FbBase);
 216    smesa->backPitch = width2 * depth;
 217
 218    memset ( &smesa->cbClearPacket, 0, sizeof(ENGPACKET) );
 219
 220    smesa->cbClearPacket.dwSrcPitch = (depth == 2) ? 0x80000000 : 0xf0000000;
 221    smesa->cbClearPacket.dwDestBaseAddr = smesa->backOffset;
 222    smesa->cbClearPacket.wDestPitch = smesa->backPitch;
 223    smesa->cbClearPacket.stdwDestPos.wY = 0;
 224    smesa->cbClearPacket.stdwDestPos.wX = 0;
 225
 226    smesa->cbClearPacket.wDestHeight = smesa->virtualY;
 227    smesa->cbClearPacket.stdwDim.wWidth = (GLshort) width2;
 228    smesa->cbClearPacket.stdwDim.wHeight = (GLshort) smesa->height;
 229    smesa->cbClearPacket.stdwCmd.cRop = 0xf0;
 230
 231    if (smesa->blockWrite)
 232       smesa->cbClearPacket.stdwCmd.cCmd0 = (GLbyte)(CMD0_PAT_FG_COLOR);
 233    else
 234       smesa->cbClearPacket.stdwCmd.cCmd0 = 0;
 235    smesa->cbClearPacket.stdwCmd.cCmd1 = CMD1_DIR_X_INC | CMD1_DIR_Y_INC;
 236 }
 237
 238 void
 239 sisFreeBackbuffer( sisContextPtr smesa )
 240 {
 241    sisFreeFB( smesa, smesa->bbFree );
 242    smesa->backbuffer = NULL;
 243 }