src/gallium/winsys/drm/radeon/core/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 #include "trace/tr_drm.h"
  38
  39 #include "util/u_memory.h"
  40
  41 #include "xf86drm.h"
  42 #include <sys/ioctl.h>
  43
  44 /* Helper function to do the ioctls needed for setup and init. */
  45 static void do_ioctls(int fd, struct radeon_winsys* winsys)
  46 {
  47     struct drm_radeon_gem_info gem_info = {0};
  48     struct drm_radeon_info info = {0};
  49     int target = 0;
  50     int retval;
  51     drmVersionPtr version;
  52
  53     info.value = (unsigned long)&target;
  54
  55     /* We do things in a specific order here.
  56      *
  57      * DRM version first. We need to be sure we're running on a KMS chipset.
  58      * This is also for some features.
  59      *
  60      * Then, the PCI ID. This is essential and should return usable numbers
  61      * for all Radeons. If this fails, we probably got handed an FD for some
  62      * non-Radeon card.
  63      *
  64      * The GB and Z pipe requests should always succeed, but they might not
  65      * return sensical values for all chipsets, but that's alright because
  66      * the pipe drivers already know that.
  67      *
  68      * The GEM info is actually bogus on the kernel side, as well as our side
  69      * (see radeon_gem_info_ioctl in radeon_gem.c) but that's alright because
  70      * we don't actually use the info for anything yet. */
  71
  72     version = drmGetVersion(fd);
  73     if (version->version_major != 2) {
  74         fprintf(stderr, "%s: DRM version is %d.%d.%d but this driver is "
  75                 "only compatible with 2.x.x\n", __FUNCTION__,
  76                 version->version_major, version->version_minor,
  77                 version->version_patchlevel);
  78         drmFreeVersion(version);
  79         exit(1);
  80     }
  81
  82     info.request = RADEON_INFO_DEVICE_ID;
  83     retval = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));
  84     if (retval) {
  85         fprintf(stderr, "%s: Failed to get PCI ID, "
  86                 "error number %d\n", __FUNCTION__, retval);
  87         exit(1);
  88     }
  89     winsys->pci_id = target;
  90
  91     info.request = RADEON_INFO_NUM_GB_PIPES;
  92     retval = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));
  93     if (retval) {
  94         fprintf(stderr, "%s: Failed to get GB pipe count, "
  95                 "error number %d\n", __FUNCTION__, retval);
  96         exit(1);
  97     }
  98     winsys->gb_pipes = target;
  99
 100     info.request = RADEON_INFO_NUM_Z_PIPES;
 101     retval = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));
 102     if (retval) {
 103         fprintf(stderr, "%s: Failed to get Z pipe count, "
 104                 "error number %d\n", __FUNCTION__, retval);
 105         exit(1);
 106     }
 107     winsys->z_pipes = target;
 108
 109     retval = drmCommandWriteRead(fd, DRM_RADEON_GEM_INFO,
 110             &gem_info, sizeof(gem_info));
 111     if (retval) {
 112         fprintf(stderr, "%s: Failed to get MM info, error number %d\n",
 113                 __FUNCTION__, retval);
 114         exit(1);
 115     }
 116     winsys->gart_size = gem_info.gart_size;
 117     winsys->vram_size = gem_info.vram_size;
 118
 119     debug_printf("radeon: Successfully grabbed chipset info from kernel!\n"
 120                  "radeon: DRM version: %d.%d.%d ID: 0x%04x GB: %d Z: %d\n"
 121                  "radeon: GART size: %d MB VRAM size: %d MB\n",
 122                  version->version_major, version->version_minor,
 123                  version->version_patchlevel, winsys->pci_id,
 124                  winsys->gb_pipes, winsys->z_pipes,
 125                  winsys->gart_size / 1024 / 1024,
 126                  winsys->vram_size / 1024 / 1024);
 127
 128     drmFreeVersion(version);
 129 }
 130
 131 /* Create a pipe_screen. */
 132 struct pipe_screen* radeon_create_screen(struct drm_api* api,
 133                                          int drmFB,
 134                                          struct drm_create_screen_arg *arg)
 135 {
 136     struct radeon_winsys* rwinsys = radeon_pipe_winsys(drmFB);
 137     do_ioctls(drmFB, rwinsys);
 138
 139     /* The state tracker can organize a softpipe fallback if no hw
 140      * driver is found.
 141      */
 142     if (is_r3xx(rwinsys->pci_id)) {
 143         radeon_setup_winsys(drmFB, rwinsys);
 144         return r300_create_screen(rwinsys);
 145     } else {
 146         FREE(rwinsys);
 147         return NULL;
 148     }
 149 }
 150
 151 static void radeon_drm_api_destroy(struct drm_api *api)
 152 {
 153     return;
 154 }
 155
 156 struct drm_api drm_api_hooks = {
 157     .name = "radeon",
 158     .driver_name = "radeon",
 159     .create_screen = radeon_create_screen,
 160     .destroy = radeon_drm_api_destroy,
 161 };
 162
 163 struct drm_api* drm_api_create()
 164 {
 165 #ifdef DEBUG
 166     return trace_drm_create(&drm_api_hooks);
 167 #else
 168     return &drm_api_hooks;
 169 #endif
 170 }