src/gallium/state_trackers/gbm/gbm_drm.c

   1 /*
   2  * Copyright © 2011 Intel Corporation
   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, sublicense,
   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 next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  19  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  20  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *    Benjamin Franzke <benjaminfranzke@googlemail.com>
  26  */
  27
  28 #include "util/u_memory.h"
  29 #include "util/u_inlines.h"
  30
  31 #include "state_tracker/drm_driver.h"
  32
  33 #include <unistd.h>
  34 #include <sys/types.h>
  35
  36 #include "gbm_gallium_drmint.h"
  37
  38 static INLINE enum pipe_format
  39 gbm_format_to_gallium(enum gbm_bo_format format)
  40 {
  41    switch (format) {
  42    case GBM_BO_FORMAT_XRGB8888:
  43       return PIPE_FORMAT_B8G8R8X8_UNORM;
  44    case GBM_BO_FORMAT_ARGB8888:
  45       return PIPE_FORMAT_B8G8R8A8_UNORM;
  46    default:
  47       return PIPE_FORMAT_NONE;
  48    }
  49
  50    return PIPE_FORMAT_NONE;
  51 }
  52
  53 static INLINE uint
  54 gbm_usage_to_gallium(uint usage)
  55 {
  56    uint resource_usage = 0;
  57
  58    if (usage & GBM_BO_USE_SCANOUT)
  59       resource_usage |= PIPE_BIND_SCANOUT;
  60
  61    if (usage & GBM_BO_USE_RENDERING)
  62       resource_usage |= PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
  63
  64    if (usage & GBM_BO_USE_CURSOR_64X64)
  65       resource_usage |= PIPE_BIND_CURSOR;
  66
  67    return resource_usage;
  68 }
  69
  70 static int
  71 gbm_gallium_drm_is_format_supported(struct gbm_device *gbm,
  72                                     enum gbm_bo_format format,
  73                                     uint32_t usage)
  74 {
  75    struct gbm_gallium_drm_device *gdrm = gbm_gallium_drm_device(gbm);
  76    enum pipe_format pf;
  77
  78    pf = gbm_format_to_gallium(format);
  79    if (pf == PIPE_FORMAT_NONE)
  80       return 0;
  81
  82    if (!gdrm->screen->is_format_supported(gdrm->screen, PIPE_TEXTURE_2D, pf, 0,
  83                                           gbm_usage_to_gallium(usage)))
  84       return 0;
  85
  86    if (usage & GBM_BO_USE_SCANOUT && format != GBM_BO_FORMAT_XRGB8888)
  87       return 0;
  88
  89    return 1;
  90 }
  91
  92 static void
  93 gbm_gallium_drm_bo_destroy(struct gbm_bo *_bo)
  94 {
  95    struct gbm_gallium_drm_bo *bo = gbm_gallium_drm_bo(_bo);
  96
  97    pipe_resource_reference(&bo->resource, NULL);
  98    free(bo);
  99 }
 100
 101 static struct gbm_bo *
 102 gbm_gallium_drm_bo_create_from_egl_image(struct gbm_device *gbm,
 103                                          void *egl_dpy, void *egl_image,
 104                                          uint32_t width, uint32_t height,
 105                                          uint32_t usage)
 106 {
 107    struct gbm_gallium_drm_device *gdrm = gbm_gallium_drm_device(gbm);
 108    struct gbm_gallium_drm_bo *bo;
 109    struct winsys_handle whandle;
 110
 111    if (!gdrm->lookup_egl_image)
 112       return NULL;
 113
 114    bo = CALLOC_STRUCT(gbm_gallium_drm_bo);
 115    if (bo == NULL)
 116       return NULL;
 117
 118    bo->resource = gdrm->lookup_egl_image(gdrm->lookup_egl_image_data,
 119                                          egl_image);
 120    if (bo->resource == NULL) {
 121       FREE(bo);
 122       return NULL;
 123    }
 124
 125    bo->base.base.gbm = gbm;
 126    bo->base.base.width = width;
 127    bo->base.base.height = height;
 128
 129    memset(&whandle, 0, sizeof(whandle));
 130    whandle.type = DRM_API_HANDLE_TYPE_KMS;
 131    gdrm->screen->resource_get_handle(gdrm->screen, bo->resource, &whandle);
 132
 133    bo->base.base.handle.u32 = whandle.handle;
 134    bo->base.base.pitch      = whandle.stride;
 135
 136    return &bo->base.base;
 137 }
 138
 139 static struct gbm_bo *
 140 gbm_gallium_drm_bo_create(struct gbm_device *gbm,
 141                           uint32_t width, uint32_t height,
 142                           enum gbm_bo_format format, uint32_t usage)
 143 {
 144    struct gbm_gallium_drm_device *gdrm = gbm_gallium_drm_device(gbm);
 145    struct gbm_gallium_drm_bo *bo;
 146    struct pipe_resource templ;
 147    struct winsys_handle whandle;
 148    enum pipe_format pf;
 149
 150    bo = CALLOC_STRUCT(gbm_gallium_drm_bo);
 151    if (bo == NULL)
 152       return NULL;
 153
 154    bo->base.base.gbm = gbm;
 155    bo->base.base.width = width;
 156    bo->base.base.height = height;
 157
 158    pf = gbm_format_to_gallium(format);
 159    if (pf == PIPE_FORMAT_NONE)
 160       return NULL;
 161
 162    memset(&templ, 0, sizeof(templ));
 163    templ.bind = gbm_usage_to_gallium(usage);
 164    templ.format = pf;
 165    templ.target = PIPE_TEXTURE_2D;
 166    templ.last_level = 0;
 167    templ.width0 = width;
 168    templ.height0 = height;
 169    templ.depth0 = 1;
 170    templ.array_size = 1;
 171
 172    bo->resource = gdrm->screen->resource_create(gdrm->screen, &templ);
 173    if (bo->resource == NULL) {
 174       FREE(bo);
 175       return NULL;
 176    }
 177
 178    memset(&whandle, 0, sizeof(whandle));
 179    whandle.type = DRM_API_HANDLE_TYPE_KMS;
 180    gdrm->screen->resource_get_handle(gdrm->screen, bo->resource, &whandle);
 181
 182    bo->base.base.handle.u32 = whandle.handle;
 183    bo->base.base.pitch      = whandle.stride;
 184
 185    return &bo->base.base;
 186 }
 187
 188 static void
 189 gbm_gallium_drm_destroy(struct gbm_device *gbm)
 190 {
 191    struct gbm_gallium_drm_device *gdrm = gbm_gallium_drm_device(gbm);
 192
 193    gdrm->screen->destroy(gdrm->screen);
 194
 195    FREE(gdrm->base.driver_name);
 196
 197    FREE(gdrm);
 198 }
 199
 200 struct gbm_device *
 201 gbm_gallium_drm_device_create(int fd)
 202 {
 203    struct gbm_gallium_drm_device *gdrm;
 204    int ret;
 205
 206    gdrm = calloc(1, sizeof *gdrm);
 207
 208    gdrm->base.base.fd = fd;
 209    gdrm->base.base.bo_create = gbm_gallium_drm_bo_create;
 210    gdrm->base.base.bo_create_from_egl_image =
 211       gbm_gallium_drm_bo_create_from_egl_image;
 212    gdrm->base.base.bo_destroy = gbm_gallium_drm_bo_destroy;
 213    gdrm->base.base.is_format_supported = gbm_gallium_drm_is_format_supported;
 214    gdrm->base.base.destroy = gbm_gallium_drm_destroy;
 215
 216    gdrm->base.type = GBM_DRM_DRIVER_TYPE_GALLIUM;
 217    gdrm->base.base.name = "drm";
 218
 219    ret = gallium_screen_create(gdrm);
 220    if (ret) {
 221       free(gdrm);
 222       return NULL;
 223    }
 224
 225    return &gdrm->base.base;
 226 }