src/gallium/winsys/radeon/drm/radeon_drm.c

   1 /*
   2  * Copyright © 2009 Corbin Simpson
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining
   6  * a copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sub license, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  14  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
  15  * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  16  * NON-INFRINGEMENT. IN NO EVENT SHALL THE COPYRIGHT HOLDERS, AUTHORS
  17  * AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  20  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * The above copyright notice and this permission notice (including the
  23  * next paragraph) shall be included in all copies or substantial portions
  24  * of the Software.
  25  */
  26 /*
  27  * Authors:
  28  *      Corbin Simpson <MostAwesomeDude@gmail.com>
  29  *      Joakim Sindholt <opensource@zhasha.com>
  30  */
  31
  32 #include "radeon_drm.h"
  33 #include "radeon_r300.h"
  34 #include "radeon_buffer.h"
  35
  36 #include "r300_winsys.h"
  37
  38 #include "galahad/glhd_drm.h"
  39 #include "trace/tr_drm.h"
  40
  41 #include "util/u_memory.h"
  42
  43 #include "xf86drm.h"
  44 #include <sys/ioctl.h>
  45
  46 static struct radeon_libdrm_winsys *
  47 radeon_winsys_create(int fd)
  48 {
  49     struct radeon_libdrm_winsys *rws;
  50
  51     rws = CALLOC_STRUCT(radeon_libdrm_winsys);
  52     if (rws == NULL) {
  53         return NULL;
  54     }
  55
  56     rws->fd = fd;
  57     return rws;
  58 }
  59
  60 /* Helper function to do the ioctls needed for setup and init. */
  61 static void do_ioctls(int fd, struct radeon_libdrm_winsys* winsys)
  62 {
  63     struct drm_radeon_gem_info gem_info = {0};
  64     struct drm_radeon_info info = {0};
  65     int target = 0;
  66     int retval;
  67     drmVersionPtr version;
  68
  69     info.value = (unsigned long)&target;
  70
  71     /* We do things in a specific order here.
  72      *
  73      * DRM version first. We need to be sure we're running on a KMS chipset.
  74      * This is also for some features.
  75      *
  76      * Then, the PCI ID. This is essential and should return usable numbers
  77      * for all Radeons. If this fails, we probably got handed an FD for some
  78      * non-Radeon card.
  79      *
  80      * The GB and Z pipe requests should always succeed, but they might not
  81      * return sensical values for all chipsets, but that's alright because
  82      * the pipe drivers already know that.
  83      *
  84      * The GEM info is actually bogus on the kernel side, as well as our side
  85      * (see radeon_gem_info_ioctl in radeon_gem.c) but that's alright because
  86      * we don't actually use the info for anything yet. */
  87
  88     version = drmGetVersion(fd);
  89     if (version->version_major != 2) {
  90         fprintf(stderr, "%s: DRM version is %d.%d.%d but this driver is "
  91                 "only compatible with 2.x.x\n", __FUNCTION__,
  92                 version->version_major, version->version_minor,
  93                 version->version_patchlevel);
  94         drmFreeVersion(version);
  95         exit(1);
  96     }
  97
  98 /* XXX Remove this ifdef when libdrm version 2.4.19 becomes mandatory. */
  99 #ifdef RADEON_BO_FLAGS_MICRO_TILE_SQUARE
 100     // Supported since 2.1.0.
 101     winsys->squaretiling = version->version_major > 2 ||
 102                            version->version_minor >= 1;
 103 #endif
 104
 105     winsys->drm_2_3_0 = version->version_major > 2 ||
 106                         version->version_minor >= 3;
 107
 108     info.request = RADEON_INFO_DEVICE_ID;
 109     retval = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));
 110     if (retval) {
 111         fprintf(stderr, "%s: Failed to get PCI ID, "
 112                 "error number %d\n", __FUNCTION__, retval);
 113         exit(1);
 114     }
 115     winsys->pci_id = target;
 116
 117     info.request = RADEON_INFO_NUM_GB_PIPES;
 118     retval = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));
 119     if (retval) {
 120         fprintf(stderr, "%s: Failed to get GB pipe count, "
 121                 "error number %d\n", __FUNCTION__, retval);
 122         exit(1);
 123     }
 124     winsys->gb_pipes = target;
 125
 126     info.request = RADEON_INFO_NUM_Z_PIPES;
 127     retval = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));
 128     if (retval) {
 129         fprintf(stderr, "%s: Failed to get Z pipe count, "
 130                 "error number %d\n", __FUNCTION__, retval);
 131         exit(1);
 132     }
 133     winsys->z_pipes = target;
 134
 135     retval = drmCommandWriteRead(fd, DRM_RADEON_GEM_INFO,
 136             &gem_info, sizeof(gem_info));
 137     if (retval) {
 138         fprintf(stderr, "%s: Failed to get MM info, error number %d\n",
 139                 __FUNCTION__, retval);
 140         exit(1);
 141     }
 142     winsys->gart_size = gem_info.gart_size;
 143     winsys->vram_size = gem_info.vram_size;
 144
 145     debug_printf("radeon: Successfully grabbed chipset info from kernel!\n"
 146                  "radeon: DRM version: %d.%d.%d ID: 0x%04x GB: %d Z: %d\n"
 147                  "radeon: GART size: %d MB VRAM size: %d MB\n",
 148                  version->version_major, version->version_minor,
 149                  version->version_patchlevel, winsys->pci_id,
 150                  winsys->gb_pipes, winsys->z_pipes,
 151                  winsys->gart_size / 1024 / 1024,
 152                  winsys->vram_size / 1024 / 1024);
 153
 154     drmFreeVersion(version);
 155 }
 156
 157 /* Create a pipe_screen. */
 158 struct pipe_screen* radeon_create_screen(struct drm_api* api, int drmFB)
 159 {
 160     struct radeon_libdrm_winsys* rws;
 161     boolean ret;
 162
 163     rws = radeon_winsys_create(drmFB);
 164     if (!rws)
 165         return NULL;
 166
 167     do_ioctls(drmFB, rws);
 168
 169     /* The state tracker can organize a softpipe fallback if no hw
 170      * driver is found.
 171      */
 172     if (is_r3xx(rws->pci_id)) {
 173         ret = radeon_setup_winsys(drmFB, rws);
 174         if (ret == FALSE)
 175             goto fail;
 176         return r300_create_screen(&rws->base);
 177     }
 178
 179 fail:
 180     FREE(rws);
 181     return NULL;
 182 }
 183
 184 static struct drm_api radeon_drm_api_hooks = {
 185     .name = "radeon",
 186     .driver_name = "radeon",
 187     .create_screen = radeon_create_screen,
 188     .destroy = NULL,
 189 };
 190
 191 struct drm_api* drm_api_create()
 192 {
 193     //return galahad_drm_create(trace_drm_create(&radeon_drm_api_hooks));
 194     return trace_drm_create(&radeon_drm_api_hooks);
 195 }