src/panfrost/encoder/pan_props.c

   1 /*
   2  * Copyright (C) 2019 Collabora, Ltd.
   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 FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  *
  23  * Authors:
  24  *   Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
  25  */
  26
  27 #include <xf86drm.h>
  28
  29 #include "util/u_math.h"
  30 #include "util/macros.h"
  31 #include "drm-uapi/panfrost_drm.h"
  32 #include "pan_encoder.h"
  33
  34 /* Abstraction over the raw drm_panfrost_get_param ioctl for fetching
  35  * information about devices */
  36
  37 static __u64
  38 panfrost_query_raw(
  39                 int fd,
  40                 enum drm_panfrost_param param,
  41                 bool required,
  42                 unsigned default_value)
  43 {
  44         struct drm_panfrost_get_param get_param = {0,};
  45         ASSERTED int ret;
  46
  47         get_param.param = DRM_PANFROST_PARAM_GPU_PROD_ID;
  48         ret = drmIoctl(fd, DRM_IOCTL_PANFROST_GET_PARAM, &get_param);
  49
  50         if (ret) {
  51                 assert(!required);
  52                 return default_value;
  53         }
  54
  55         return get_param.value;
  56 }
  57
  58 unsigned
  59 panfrost_query_gpu_version(int fd)
  60 {
  61         return panfrost_query_raw(fd, DRM_PANFROST_PARAM_GPU_PROD_ID, true, 0);
  62 }
  63
  64 unsigned
  65 panfrost_query_core_count(int fd)
  66 {
  67         /* On older kernels, worst-case to 16 cores */
  68
  69         unsigned mask = panfrost_query_raw(fd,
  70                         DRM_PANFROST_PARAM_SHADER_PRESENT, false, 0xffff);
  71
  72         return util_bitcount(mask);
  73 }
  74
  75 unsigned
  76 panfrost_query_thread_tls_alloc(int fd)
  77 {
  78         /* On older kernels, we worst-case to 1024 threads, the architectural
  79          * maximum for Midgard */
  80
  81         return panfrost_query_raw(fd,
  82                         DRM_PANFROST_PARAM_THREAD_TLS_ALLOC, false, 1024);
  83 }
  84
  85 /* Given a GPU ID like 0x860, return a prettified model name */
  86
  87 const char *
  88 panfrost_model_name(unsigned gpu_id)
  89 {
  90         switch (gpu_id) {
  91         case 0x600: return "Mali T600 (Panfrost)";
  92         case 0x620: return "Mali T620 (Panfrost)";
  93         case 0x720: return "Mali T720 (Panfrost)";
  94         case 0x820: return "Mali T820 (Panfrost)";
  95         case 0x830: return "Mali T830 (Panfrost)";
  96         case 0x750: return "Mali T760 (Panfrost)";
  97         case 0x860: return "Mali T860 (Panfrost)";
  98         case 0x880: return "Mali T880 (Panfrost)";
  99         default:
 100                     unreachable("Invalid GPU ID");
 101         }
 102 }