src/mesa/drivers/dri/unichrome/via_fb.c

   1 /*
   2  * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
   3  * Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sub license,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the
  13  * next paragraph) shall be included in all copies or substantial portions
  14  * of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  19  * VIA, S3 GRAPHICS, AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 #include <assert.h>
  26
  27 #include "via_context.h"
  28 #include "via_ioctl.h"
  29 #include "via_fb.h"
  30 #include "xf86drm.h"
  31 #include "imports.h"
  32 #include "simple_list.h"
  33 #include <sys/ioctl.h>
  34
  35 GLboolean
  36 via_alloc_draw_buffer(struct via_context *vmesa, struct via_buffer *buf)
  37 {
  38    drm_via_mem_t mem;
  39    mem.context = vmesa->hHWContext;
  40    mem.size = buf->size;
  41    mem.type = VIA_MEM_VIDEO;
  42    mem.offset = 0;
  43    mem.index = 0;
  44
  45    if (ioctl(vmesa->driFd, DRM_IOCTL_VIA_ALLOCMEM, &mem))
  46       return GL_FALSE;
  47
  48
  49    buf->offset = mem.offset;
  50    buf->map = (char *)vmesa->driScreen->pFB + mem.offset;
  51    buf->index = mem.index;
  52    return GL_TRUE;
  53 }
  54
  55 void
  56 via_free_draw_buffer(struct via_context *vmesa, struct via_buffer *buf)
  57 {
  58    drm_via_mem_t mem;
  59
  60    if (!vmesa) return;
  61
  62    mem.context = vmesa->hHWContext;
  63    mem.index = buf->index;
  64    mem.type = VIA_MEM_VIDEO;
  65    mem.offset = buf->offset;
  66    mem.size = buf->size;
  67
  68    ioctl(vmesa->driFd, DRM_IOCTL_VIA_FREEMEM, &mem);
  69    buf->map = NULL;
  70 }
  71
  72
  73 GLboolean
  74 via_alloc_dma_buffer(struct via_context *vmesa)
  75 {
  76    drm_via_dma_init_t init;
  77
  78    vmesa->dma = (GLubyte *) malloc(VIA_DMA_BUFSIZ);
  79
  80    /*
  81     * Check whether AGP DMA has been initialized.
  82     */
  83    memset(&init, 0, sizeof(init));
  84    init.func = VIA_DMA_INITIALIZED;
  85
  86    vmesa->useAgp =
  87      ( 0 == drmCommandWrite(vmesa->driFd, DRM_VIA_DMA_INIT,
  88                              &init, sizeof(init)));
  89    if (VIA_DEBUG & DEBUG_DMA) {
  90       if (vmesa->useAgp)
  91          fprintf(stderr, "unichrome_dri.so: Using AGP.\n");
  92       else
  93          fprintf(stderr, "unichrome_dri.so: Using PCI.\n");
  94    }
  95
  96    return ((vmesa->dma) ? GL_TRUE : GL_FALSE);
  97 }
  98
  99 void
 100 via_free_dma_buffer(struct via_context *vmesa)
 101 {
 102     if (!vmesa) return;
 103     free(vmesa->dma);
 104     vmesa->dma = 0;
 105 }
 106
 107
 108 /* These functions now allocate and free the via_tex_buffer struct as well:
 109  */
 110 struct via_tex_buffer *
 111 via_alloc_texture(struct via_context *vmesa,
 112                   GLuint size,
 113                   GLuint memType)
 114 {
 115    struct via_tex_buffer *t = CALLOC_STRUCT(via_tex_buffer);
 116
 117    if (!t)
 118       goto cleanup;
 119
 120    t->size = size;
 121    t->memType = memType;
 122    insert_at_tail(&vmesa->tex_image_list[memType], t);
 123
 124    if (t->memType == VIA_MEM_AGP ||
 125        t->memType == VIA_MEM_VIDEO) {
 126       drm_via_mem_t fb;
 127
 128       fb.context = vmesa->hHWContext;
 129       fb.size = t->size;
 130       fb.type = t->memType;
 131       fb.offset = 0;
 132       fb.index = 0;
 133
 134       if (ioctl(vmesa->driFd, DRM_IOCTL_VIA_ALLOCMEM, &fb) != 0 ||
 135           fb.index == 0)
 136          goto cleanup;
 137
 138       if (0)
 139          fprintf(stderr, "offset %lx index %lx\n", fb.offset, fb.index);
 140
 141       t->offset = fb.offset;
 142       t->index = fb.index;
 143
 144       if (t->memType == VIA_MEM_AGP) {
 145          t->bufAddr = (GLubyte *)((GLuint)vmesa->viaScreen->agpLinearStart +
 146                                   fb.offset);
 147          t->texBase = (GLuint)vmesa->agpBase + fb.offset;
 148       }
 149       else {
 150          t->bufAddr = (GLubyte *)(fb.offset + (GLuint)vmesa->driScreen->pFB);
 151          t->texBase = fb.offset;
 152       }
 153
 154       vmesa->total_alloc[t->memType] += t->size;
 155       return t;
 156    }
 157    else if (t->memType == VIA_MEM_SYSTEM) {
 158
 159       t->bufAddr = MESA_PBUFFER_ALLOC(t->size);
 160       if (!t->bufAddr)
 161          goto cleanup;
 162
 163       vmesa->total_alloc[t->memType] += t->size;
 164       return t;
 165    }
 166
 167  cleanup:
 168    if (t) {
 169       remove_from_list(t);
 170       FREE(t);
 171    }
 172
 173    return NULL;
 174 }
 175
 176
 177 static void
 178 via_do_free_texture(struct via_context *vmesa, struct via_tex_buffer *t)
 179 {
 180    drm_via_mem_t fb;
 181
 182    remove_from_list( t );
 183
 184    vmesa->total_alloc[t->memType] -= t->size;
 185
 186    fb.context = vmesa->hHWContext;
 187    fb.index = t->index;
 188    fb.offset = t->offset;
 189    fb.type = t->memType;
 190    fb.size = t->size;
 191
 192    if (ioctl(vmesa->driFd, DRM_IOCTL_VIA_FREEMEM, &fb)) {
 193       fprintf(stderr, "via_free_texture fail\n");
 194    }
 195
 196    FREE(t);
 197 }
 198
 199
 200 /* Release textures which were potentially still being referenced by
 201  * hardware at the time when they were originally freed.
 202  */
 203 void
 204 via_release_pending_textures( struct via_context *vmesa )
 205 {
 206    struct via_tex_buffer *s, *tmp;
 207
 208    foreach_s( s, tmp, &vmesa->freed_tex_buffers ) {
 209       if (s->lastUsed < vmesa->lastBreadcrumbRead) {
 210          if (VIA_DEBUG & DEBUG_TEXTURE)
 211             fprintf(stderr, "%s: release tex sz %d lastUsed %x\n",
 212                     __FUNCTION__, s->size, s->lastUsed);
 213          via_do_free_texture(vmesa, s);
 214       }
 215    }
 216 }
 217
 218
 219
 220 void
 221 via_free_texture(struct via_context *vmesa, struct via_tex_buffer *t)
 222 {
 223    if (!t) {
 224       return;
 225    }
 226    else if (t->memType == VIA_MEM_SYSTEM) {
 227       remove_from_list(t);
 228       vmesa->total_alloc[t->memType] -= t->size;
 229       MESA_PBUFFER_FREE(t->bufAddr);
 230       FREE(t);
 231    }
 232    else if (t->index && viaCheckBreadcrumb(vmesa, t->lastUsed)) {
 233       via_do_free_texture( vmesa, t );
 234    }
 235    else {
 236       /* Close current breadcrumb so that we can free this eventually:
 237        */
 238       if (t->lastUsed == vmesa->lastBreadcrumbWrite)
 239          viaEmitBreadcrumb(vmesa);
 240
 241       move_to_tail( &vmesa->freed_tex_buffers, t );
 242    }
 243 }