src/gallium/winsys/radeon/drm/radeon_drm_common.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_winsys.h"
  33 #include "radeon_drm_buffer.h"
  34 #include "radeon_drm_public.h"
  35
  36 #include "pipebuffer/pb_bufmgr.h"
  37 #include "util/u_memory.h"
  38
  39 #include "state_tracker/drm_driver.h"
  40
  41 #include <radeon_drm.h>
  42 #include <radeon_bo_gem.h>
  43 #include <radeon_cs_gem.h>
  44 #include <xf86drm.h>
  45 #include <stdio.h>
  46
  47
  48 /* Enable/disable Hyper-Z access. Return TRUE on success. */
  49 static boolean radeon_set_hyperz_access(int fd, boolean enable)
  50 {
  51 #ifndef RADEON_INFO_WANT_HYPERZ
  52 #define RADEON_INFO_WANT_HYPERZ 7
  53 #endif
  54
  55     struct drm_radeon_info info = {0};
  56     unsigned value = enable ? 1 : 0;
  57
  58     if (!debug_get_bool_option("RADEON_HYPERZ", FALSE))
  59         return FALSE;
  60
  61     info.value = (unsigned long)&value;
  62     info.request = RADEON_INFO_WANT_HYPERZ;
  63
  64     if (drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info)) != 0)
  65         return FALSE;
  66
  67     if (enable && !value)
  68         return FALSE;
  69
  70     return TRUE;
  71 }
  72
  73 /* Helper function to do the ioctls needed for setup and init. */
  74 static void do_ioctls(struct radeon_drm_winsys *winsys)
  75 {
  76     struct drm_radeon_gem_info gem_info = {0};
  77     struct drm_radeon_info info = {0};
  78     int target = 0;
  79     int retval;
  80     drmVersionPtr version;
  81
  82     info.value = (unsigned long)&target;
  83
  84     /* We do things in a specific order here.
  85      *
  86      * DRM version first. We need to be sure we're running on a KMS chipset.
  87      * This is also for some features.
  88      *
  89      * Then, the PCI ID. This is essential and should return usable numbers
  90      * for all Radeons. If this fails, we probably got handed an FD for some
  91      * non-Radeon card.
  92      *
  93      * The GB and Z pipe requests should always succeed, but they might not
  94      * return sensical values for all chipsets, but that's alright because
  95      * the pipe drivers already know that.
  96      *
  97      * The GEM info is actually bogus on the kernel side, as well as our side
  98      * (see radeon_gem_info_ioctl in radeon_gem.c) but that's alright because
  99      * we don't actually use the info for anything yet. */
 100
 101     version = drmGetVersion(winsys->fd);
 102     if (version->version_major != 2) {
 103         fprintf(stderr, "%s: DRM version is %d.%d.%d but this driver is "
 104                 "only compatible with 2.x.x\n", __FUNCTION__,
 105                 version->version_major, version->version_minor,
 106                 version->version_patchlevel);
 107         drmFreeVersion(version);
 108         exit(1);
 109     }
 110
 111 /* XXX Remove this ifdef when libdrm version 2.4.19 becomes mandatory. */
 112 #ifdef RADEON_BO_FLAGS_MICRO_TILE_SQUARE
 113     // Supported since 2.1.0.
 114     winsys->squaretiling = version->version_major > 2 ||
 115                            version->version_minor >= 1;
 116 #endif
 117
 118     winsys->drm_2_3_0 = version->version_major > 2 ||
 119                         version->version_minor >= 3;
 120
 121     winsys->drm_2_6_0 = version->version_major > 2 ||
 122                         (version->version_major == 2 &&
 123                          version->version_minor >= 6);
 124
 125     info.request = RADEON_INFO_DEVICE_ID;
 126     retval = drmCommandWriteRead(winsys->fd, DRM_RADEON_INFO, &info, sizeof(info));
 127     if (retval) {
 128         fprintf(stderr, "%s: Failed to get PCI ID, "
 129                 "error number %d\n", __FUNCTION__, retval);
 130         exit(1);
 131     }
 132     winsys->pci_id = target;
 133
 134     info.request = RADEON_INFO_NUM_GB_PIPES;
 135     retval = drmCommandWriteRead(winsys->fd, DRM_RADEON_INFO, &info, sizeof(info));
 136     if (retval) {
 137         fprintf(stderr, "%s: Failed to get GB pipe count, "
 138                 "error number %d\n", __FUNCTION__, retval);
 139         exit(1);
 140     }
 141     winsys->gb_pipes = target;
 142
 143     info.request = RADEON_INFO_NUM_Z_PIPES;
 144     retval = drmCommandWriteRead(winsys->fd, DRM_RADEON_INFO, &info, sizeof(info));
 145     if (retval) {
 146         fprintf(stderr, "%s: Failed to get Z pipe count, "
 147                 "error number %d\n", __FUNCTION__, retval);
 148         exit(1);
 149     }
 150     winsys->z_pipes = target;
 151
 152     winsys->hyperz = radeon_set_hyperz_access(winsys->fd, TRUE);
 153
 154     retval = drmCommandWriteRead(winsys->fd, DRM_RADEON_GEM_INFO,
 155             &gem_info, sizeof(gem_info));
 156     if (retval) {
 157         fprintf(stderr, "%s: Failed to get MM info, error number %d\n",
 158                 __FUNCTION__, retval);
 159         exit(1);
 160     }
 161     winsys->gart_size = gem_info.gart_size;
 162     winsys->vram_size = gem_info.vram_size;
 163
 164     debug_printf("radeon: Successfully grabbed chipset info from kernel!\n"
 165                  "radeon: DRM version: %d.%d.%d ID: 0x%04x GB: %d Z: %d\n"
 166                  "radeon: GART size: %d MB VRAM size: %d MB\n"
 167                  "radeon: HyperZ: %s\n",
 168                  version->version_major, version->version_minor,
 169                  version->version_patchlevel, winsys->pci_id,
 170                  winsys->gb_pipes, winsys->z_pipes,
 171                  winsys->gart_size / 1024 / 1024,
 172                  winsys->vram_size / 1024 / 1024,
 173                  winsys->hyperz ? "YES" : "NO");
 174
 175     drmFreeVersion(version);
 176 }
 177
 178 static void radeon_winsys_destroy(struct r300_winsys_screen *rws)
 179 {
 180     struct radeon_drm_winsys *ws = (struct radeon_drm_winsys*)rws;
 181
 182     ws->cman->destroy(ws->cman);
 183     ws->kman->destroy(ws->kman);
 184
 185     radeon_bo_manager_gem_dtor(ws->bom);
 186     radeon_cs_manager_gem_dtor(ws->csm);
 187     FREE(rws);
 188 }
 189
 190 struct r300_winsys_screen *r300_drm_winsys_screen_create(int fd)
 191 {
 192     struct radeon_drm_winsys *ws = CALLOC_STRUCT(radeon_drm_winsys);
 193     if (!ws) {
 194         return NULL;
 195     }
 196
 197     ws->fd = fd;
 198     do_ioctls(ws);
 199
 200     if (!is_r3xx(ws->pci_id)) {
 201         goto fail;
 202     }
 203
 204     /* Create managers. */
 205     ws->bom = radeon_bo_manager_gem_ctor(fd);
 206     if (!ws->bom)
 207         goto fail;
 208     ws->csm = radeon_cs_manager_gem_ctor(fd);
 209     if (!ws->csm)
 210         goto fail;
 211     ws->kman = radeon_drm_bufmgr_create(ws);
 212     if (!ws->kman)
 213         goto fail;
 214     ws->cman = pb_cache_manager_create(ws->kman, 1000000);
 215     if (!ws->cman)
 216         goto fail;
 217
 218     /* Set functions. */
 219     ws->base.destroy = radeon_winsys_destroy;
 220
 221     radeon_drm_bufmgr_init_functions(ws);
 222     radeon_winsys_init_functions(ws);
 223
 224     return &ws->base;
 225
 226 fail:
 227     if (ws->bom)
 228         radeon_bo_manager_gem_dtor(ws->bom);
 229     if (ws->csm)
 230         radeon_cs_manager_gem_dtor(ws->csm);
 231
 232     if (ws->cman)
 233         ws->cman->destroy(ws->cman);
 234     if (ws->kman)
 235         ws->kman->destroy(ws->kman);
 236
 237     FREE(ws);
 238     return NULL;
 239 }