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 #include "radeon_drm_public.h"
  36
  37 #include "r300_winsys.h"
  38
  39 #include "util/u_memory.h"
  40
  41 #include "xf86drm.h"
  42 #include <sys/ioctl.h>
  43
  44 static struct radeon_libdrm_winsys *
  45 radeon_winsys_create(int fd)
  46 {
  47     struct radeon_libdrm_winsys *rws;
  48
  49     rws = CALLOC_STRUCT(radeon_libdrm_winsys);
  50     if (rws == NULL) {
  51         return NULL;
  52     }
  53
  54     rws->fd = fd;
  55     return rws;
  56 }
  57
  58 /* Helper function to do the ioctls needed for setup and init. */
  59 static void do_ioctls(int fd, struct radeon_libdrm_winsys* winsys)
  60 {
  61     struct drm_radeon_gem_info gem_info = {0};
  62     struct drm_radeon_info info = {0};
  63     int target = 0;
  64     int retval;
  65     drmVersionPtr version;
  66
  67     info.value = (unsigned long)&target;
  68
  69     /* We do things in a specific order here.
  70      *
  71      * DRM version first. We need to be sure we're running on a KMS chipset.
  72      * This is also for some features.
  73      *
  74      * Then, the PCI ID. This is essential and should return usable numbers
  75      * for all Radeons. If this fails, we probably got handed an FD for some
  76      * non-Radeon card.
  77      *
  78      * The GB and Z pipe requests should always succeed, but they might not
  79      * return sensical values for all chipsets, but that's alright because
  80      * the pipe drivers already know that.
  81      *
  82      * The GEM info is actually bogus on the kernel side, as well as our side
  83      * (see radeon_gem_info_ioctl in radeon_gem.c) but that's alright because
  84      * we don't actually use the info for anything yet. */
  85
  86     version = drmGetVersion(fd);
  87     if (version->version_major != 2) {
  88         fprintf(stderr, "%s: DRM version is %d.%d.%d but this driver is "
  89                 "only compatible with 2.x.x\n", __FUNCTION__,
  90                 version->version_major, version->version_minor,
  91                 version->version_patchlevel);
  92         drmFreeVersion(version);
  93         exit(1);
  94     }
  95
  96 /* XXX Remove this ifdef when libdrm version 2.4.19 becomes mandatory. */
  97 #ifdef RADEON_BO_FLAGS_MICRO_TILE_SQUARE
  98     // Supported since 2.1.0.
  99     winsys->squaretiling = version->version_major > 2 ||
 100                            version->version_minor >= 1;
 101 #endif
 102
 103     winsys->drm_2_3_0 = version->version_major > 2 ||
 104                         version->version_minor >= 3;
 105
 106     winsys->drm_2_6_0 = version->version_major > 2 ||
 107                         (version->version_major == 2 &&
 108                          version->version_minor >= 6);
 109
 110     info.request = RADEON_INFO_DEVICE_ID;
 111     retval = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));
 112     if (retval) {
 113         fprintf(stderr, "%s: Failed to get PCI ID, "
 114                 "error number %d\n", __FUNCTION__, retval);
 115         exit(1);
 116     }
 117     winsys->pci_id = target;
 118
 119     info.request = RADEON_INFO_NUM_GB_PIPES;
 120     retval = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));
 121     if (retval) {
 122         fprintf(stderr, "%s: Failed to get GB pipe count, "
 123                 "error number %d\n", __FUNCTION__, retval);
 124         exit(1);
 125     }
 126     winsys->gb_pipes = target;
 127
 128     info.request = RADEON_INFO_NUM_Z_PIPES;
 129     retval = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));
 130     if (retval) {
 131         fprintf(stderr, "%s: Failed to get Z pipe count, "
 132                 "error number %d\n", __FUNCTION__, retval);
 133         exit(1);
 134     }
 135     winsys->z_pipes = target;
 136
 137     winsys->hyperz = FALSE;
 138 #ifndef RADEON_INFO_WANT_HYPERZ
 139 #define RADEON_INFO_WANT_HYPERZ 7
 140 #endif
 141     info.request = RADEON_INFO_WANT_HYPERZ;
 142     retval = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));
 143     if (!retval && target == 1) {
 144         winsys->hyperz = TRUE;
 145     }
 146
 147     retval = drmCommandWriteRead(fd, DRM_RADEON_GEM_INFO,
 148             &gem_info, sizeof(gem_info));
 149     if (retval) {
 150         fprintf(stderr, "%s: Failed to get MM info, error number %d\n",
 151                 __FUNCTION__, retval);
 152         exit(1);
 153     }
 154     winsys->gart_size = gem_info.gart_size;
 155     winsys->vram_size = gem_info.vram_size;
 156
 157     debug_printf("radeon: Successfully grabbed chipset info from kernel!\n"
 158                  "radeon: DRM version: %d.%d.%d ID: 0x%04x GB: %d Z: %d\n"
 159                  "radeon: GART size: %d MB VRAM size: %d MB\n"
 160                  "radeon: HyperZ: %s\n",
 161                  version->version_major, version->version_minor,
 162                  version->version_patchlevel, winsys->pci_id,
 163                  winsys->gb_pipes, winsys->z_pipes,
 164                  winsys->gart_size / 1024 / 1024,
 165                  winsys->vram_size / 1024 / 1024,
 166                  winsys->hyperz ? "YES" : "NO");
 167
 168     drmFreeVersion(version);
 169 }
 170
 171 /* Create a pipe_screen. */
 172 struct r300_winsys_screen* r300_drm_winsys_screen_create(int drmFB)
 173 {
 174     struct radeon_libdrm_winsys* rws;
 175     boolean ret;
 176
 177     rws = radeon_winsys_create(drmFB);
 178     if (!rws)
 179         return NULL;
 180
 181     do_ioctls(drmFB, rws);
 182
 183     /* The state tracker can organize a softpipe fallback if no hw
 184      * driver is found.
 185      */
 186     if (is_r3xx(rws->pci_id)) {
 187         ret = radeon_setup_winsys(drmFB, rws);
 188         if (ret == FALSE)
 189             goto fail;
 190         return &rws->base;
 191     }
 192
 193 fail:
 194     FREE(rws);
 195     return NULL;
 196 }