src/broadcom/common/v3d_device_info.c

   1 /*
   2  * Copyright © 2016 Broadcom
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 #include <errno.h>
  25 #include <stdio.h>
  26 #include <string.h>
  27
  28 #include "common/v3d_device_info.h"
  29 #include "drm-uapi/v3d_drm.h"
  30
  31 bool
  32 v3d_get_device_info(int fd, struct v3d_device_info* devinfo, v3d_ioctl_fun drm_ioctl) {
  33     struct drm_v3d_get_param ident0 = {
  34             .param = DRM_V3D_PARAM_V3D_CORE0_IDENT0,
  35     };
  36     struct drm_v3d_get_param ident1 = {
  37             .param = DRM_V3D_PARAM_V3D_CORE0_IDENT1,
  38     };
  39     int ret;
  40
  41     ret = drm_ioctl(fd, DRM_IOCTL_V3D_GET_PARAM, &ident0);
  42     if (ret != 0) {
  43             fprintf(stderr, "Couldn't get V3D core IDENT0: %s\n",
  44                     strerror(errno));
  45             return false;
  46     }
  47     ret = drm_ioctl(fd, DRM_IOCTL_V3D_GET_PARAM, &ident1);
  48     if (ret != 0) {
  49             fprintf(stderr, "Couldn't get V3D core IDENT1: %s\n",
  50                     strerror(errno));
  51             return false;
  52     }
  53
  54     uint32_t major = (ident0.value >> 24) & 0xff;
  55     uint32_t minor = (ident1.value >> 0) & 0xf;
  56
  57     devinfo->ver = major * 10 + minor;
  58
  59     devinfo->vpm_size = (ident1.value >> 28 & 0xf) * 8192;
  60
  61     int nslc = (ident1.value >> 4) & 0xf;
  62     int qups = (ident1.value >> 8) & 0xf;
  63     devinfo->qpu_count = nslc * qups;
  64
  65     switch (devinfo->ver) {
  66         case 33:
  67         case 41:
  68         case 42:
  69                 break;
  70         default:
  71                 fprintf(stderr,
  72                         "V3D %d.%d not supported by this version of Mesa.\n",
  73                         devinfo->ver / 10,
  74                         devinfo->ver % 10);
  75                 return false;
  76     }
  77
  78     return true;
  79 }