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
  43 static struct radeon_libdrm_winsys *
  44 radeon_winsys_create(int fd)
  45 {
  46     struct radeon_libdrm_winsys *rws;
  47
  48     rws = CALLOC_STRUCT(radeon_libdrm_winsys);
  49     if (rws == NULL) {
  50         return NULL;
  51     }
  52
  53     rws->fd = fd;
  54     return rws;
  55 }
  56
  57 /* Enable/disable Hyper-Z access. Return TRUE on success. */
  58 static boolean radeon_set_hyperz_access(int fd, boolean enable)
  59 {
  60 #ifndef RADEON_INFO_WANT_HYPERZ
  61 #define RADEON_INFO_WANT_HYPERZ 7
  62 #endif
  63
  64     struct drm_radeon_info info = {0};
  65     unsigned value = enable ? 1 : 0;
  66
  67     if (!debug_get_bool_option("RADEON_HYPERZ", FALSE))
  68         return FALSE;
  69
  70     info.value = (unsigned long)&value;
  71     info.request = RADEON_INFO_WANT_HYPERZ;
  72
  73     if (drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info)) != 0)
  74         return FALSE;
  75
  76     if (enable && !value)
  77         return FALSE;
  78
  79     return TRUE;
  80 }
  81
  82 /* Helper function to do the ioctls needed for setup and init. */
  83 static void do_ioctls(int fd, struct radeon_libdrm_winsys* winsys)
  84 {
  85     struct drm_radeon_gem_info gem_info = {0};
  86     struct drm_radeon_info info = {0};
  87     int target = 0;
  88     int retval;
  89     drmVersionPtr version;
  90
  91     info.value = (unsigned long)&target;
  92
  93     /* We do things in a specific order here.
  94      *
  95      * DRM version first. We need to be sure we're running on a KMS chipset.
  96      * This is also for some features.
  97      *
  98      * Then, the PCI ID. This is essential and should return usable numbers
  99      * for all Radeons. If this fails, we probably got handed an FD for some
 100      * non-Radeon card.
 101      *
 102      * The GB and Z pipe requests should always succeed, but they might not
 103      * return sensical values for all chipsets, but that's alright because
 104      * the pipe drivers already know that.
 105      *
 106      * The GEM info is actually bogus on the kernel side, as well as our side
 107      * (see radeon_gem_info_ioctl in radeon_gem.c) but that's alright because
 108      * we don't actually use the info for anything yet. */
 109
 110     version = drmGetVersion(fd);
 111     if (version->version_major != 2) {
 112         fprintf(stderr, "%s: DRM version is %d.%d.%d but this driver is "
 113                 "only compatible with 2.x.x\n", __FUNCTION__,
 114                 version->version_major, version->version_minor,
 115                 version->version_patchlevel);
 116         drmFreeVersion(version);
 117         exit(1);
 118     }
 119
 120 /* XXX Remove this ifdef when libdrm version 2.4.19 becomes mandatory. */
 121 #ifdef RADEON_BO_FLAGS_MICRO_TILE_SQUARE
 122     // Supported since 2.1.0.
 123     winsys->squaretiling = version->version_major > 2 ||
 124                            version->version_minor >= 1;
 125 #endif
 126
 127     winsys->drm_2_3_0 = version->version_major > 2 ||
 128                         version->version_minor >= 3;
 129
 130     winsys->drm_2_6_0 = version->version_major > 2 ||
 131                         (version->version_major == 2 &&
 132                          version->version_minor >= 6);
 133
 134     info.request = RADEON_INFO_DEVICE_ID;
 135     retval = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));
 136     if (retval) {
 137         fprintf(stderr, "%s: Failed to get PCI ID, "
 138                 "error number %d\n", __FUNCTION__, retval);
 139         exit(1);
 140     }
 141     winsys->pci_id = target;
 142
 143     info.request = RADEON_INFO_NUM_GB_PIPES;
 144     retval = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));
 145     if (retval) {
 146         fprintf(stderr, "%s: Failed to get GB pipe count, "
 147                 "error number %d\n", __FUNCTION__, retval);
 148         exit(1);
 149     }
 150     winsys->gb_pipes = target;
 151
 152     info.request = RADEON_INFO_NUM_Z_PIPES;
 153     retval = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));
 154     if (retval) {
 155         fprintf(stderr, "%s: Failed to get Z pipe count, "
 156                 "error number %d\n", __FUNCTION__, retval);
 157         exit(1);
 158     }
 159     winsys->z_pipes = target;
 160
 161     winsys->hyperz = radeon_set_hyperz_access(fd, TRUE);
 162
 163     retval = drmCommandWriteRead(fd, DRM_RADEON_GEM_INFO,
 164             &gem_info, sizeof(gem_info));
 165     if (retval) {
 166         fprintf(stderr, "%s: Failed to get MM info, error number %d\n",
 167                 __FUNCTION__, retval);
 168         exit(1);
 169     }
 170     winsys->gart_size = gem_info.gart_size;
 171     winsys->vram_size = gem_info.vram_size;
 172
 173     debug_printf("radeon: Successfully grabbed chipset info from kernel!\n"
 174                  "radeon: DRM version: %d.%d.%d ID: 0x%04x GB: %d Z: %d\n"
 175                  "radeon: GART size: %d MB VRAM size: %d MB\n"
 176                  "radeon: HyperZ: %s\n",
 177                  version->version_major, version->version_minor,
 178                  version->version_patchlevel, winsys->pci_id,
 179                  winsys->gb_pipes, winsys->z_pipes,
 180                  winsys->gart_size / 1024 / 1024,
 181                  winsys->vram_size / 1024 / 1024,
 182                  winsys->hyperz ? "YES" : "NO");
 183
 184     drmFreeVersion(version);
 185 }
 186
 187 /* Create a pipe_screen. */
 188 struct r300_winsys_screen* r300_drm_winsys_screen_create(int drmFB)
 189 {
 190     struct radeon_libdrm_winsys* rws;
 191     boolean ret;
 192
 193     rws = radeon_winsys_create(drmFB);
 194     if (!rws)
 195         return NULL;
 196
 197     do_ioctls(drmFB, rws);
 198
 199     /* The state tracker can organize a softpipe fallback if no hw
 200      * driver is found.
 201      */
 202     if (is_r3xx(rws->pci_id)) {
 203         ret = radeon_setup_winsys(drmFB, rws);
 204         if (ret == FALSE)
 205             goto fail;
 206         return &rws->base;
 207     }
 208
 209 fail:
 210     FREE(rws);
 211     return NULL;
 212 }