src/panfrost/lib/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 "util/hash_table.h"
  32 #include "util/u_thread.h"
  33 #include "drm-uapi/panfrost_drm.h"
  34 #include "pan_encoder.h"
  35 #include "pan_device.h"
  36 #include "panfrost-quirks.h"
  37 #include "pan_bo.h"
  38
  39 /* Abstraction over the raw drm_panfrost_get_param ioctl for fetching
  40  * information about devices */
  41
  42 static __u64
  43 panfrost_query_raw(
  44                 int fd,
  45                 enum drm_panfrost_param param,
  46                 bool required,
  47                 unsigned default_value)
  48 {
  49         struct drm_panfrost_get_param get_param = {0,};
  50         ASSERTED int ret;
  51
  52         get_param.param = param;
  53         ret = drmIoctl(fd, DRM_IOCTL_PANFROST_GET_PARAM, &get_param);
  54
  55         if (ret) {
  56                 assert(!required);
  57                 return default_value;
  58         }
  59
  60         return get_param.value;
  61 }
  62
  63 unsigned
  64 panfrost_query_gpu_version(int fd)
  65 {
  66         return panfrost_query_raw(fd, DRM_PANFROST_PARAM_GPU_PROD_ID, true, 0);
  67 }
  68
  69 unsigned
  70 panfrost_query_core_count(int fd)
  71 {
  72         /* On older kernels, worst-case to 16 cores */
  73
  74         unsigned mask = panfrost_query_raw(fd,
  75                         DRM_PANFROST_PARAM_SHADER_PRESENT, false, 0xffff);
  76
  77         return util_bitcount(mask);
  78 }
  79
  80 unsigned
  81 panfrost_query_thread_tls_alloc(int fd)
  82 {
  83         /* On older kernels, we worst-case to 256 threads, the architectural
  84          * maximum for Midgard. On my current kernel/hardware, I'm seeing this
  85          * readback as 0, so we'll worst-case there too */
  86
  87         unsigned tls = panfrost_query_raw(fd,
  88                         DRM_PANFROST_PARAM_THREAD_TLS_ALLOC, false, 256);
  89
  90         if (tls)
  91                 return tls;
  92         else
  93                 return 256;
  94 }
  95
  96 static uint32_t
  97 panfrost_query_compressed_formats(int fd)
  98 {
  99         /* If unspecified, assume ASTC/ETC only. Factory default for Juno, and
 100          * should exist on any Mali configuration. All hardware should report
 101          * these texture formats but the kernel might not be new enough. */
 102
 103         uint32_t default_set =
 104                 (1 << MALI_ETC2_RGB8) |
 105                 (1 << MALI_ETC2_R11_UNORM) |
 106                 (1 << MALI_ETC2_RGBA8) |
 107                 (1 << MALI_ETC2_RG11_UNORM) |
 108                 (1 << MALI_ETC2_R11_SNORM) |
 109                 (1 << MALI_ETC2_RG11_SNORM) |
 110                 (1 << MALI_ETC2_RGB8A1) |
 111                 (1 << MALI_ASTC_3D_LDR) |
 112                 (1 << MALI_ASTC_3D_HDR) |
 113                 (1 << MALI_ASTC_2D_LDR) |
 114                 (1 << MALI_ASTC_2D_HDR);
 115
 116         return panfrost_query_raw(fd, DRM_PANFROST_PARAM_TEXTURE_FEATURES0,
 117                         false, default_set);
 118 }
 119
 120 /* DRM_PANFROST_PARAM_TEXTURE_FEATURES0 will return a bitmask of supported
 121  * compressed formats, so we offer a helper to test if a format is supported */
 122
 123 bool
 124 panfrost_supports_compressed_format(struct panfrost_device *dev, unsigned fmt)
 125 {
 126         if (MALI_EXTRACT_TYPE(fmt) != MALI_FORMAT_COMPRESSED)
 127                 return true;
 128
 129         unsigned idx = fmt & ~MALI_FORMAT_COMPRESSED;
 130         assert(idx < 32);
 131
 132         return dev->compressed_formats & (1 << idx);
 133 }
 134
 135 /* Given a GPU ID like 0x860, return a prettified model name */
 136
 137 const char *
 138 panfrost_model_name(unsigned gpu_id)
 139 {
 140         switch (gpu_id) {
 141         case 0x600: return "Mali T600 (Panfrost)";
 142         case 0x620: return "Mali T620 (Panfrost)";
 143         case 0x720: return "Mali T720 (Panfrost)";
 144         case 0x820: return "Mali T820 (Panfrost)";
 145         case 0x830: return "Mali T830 (Panfrost)";
 146         case 0x750: return "Mali T760 (Panfrost)";
 147         case 0x860: return "Mali T860 (Panfrost)";
 148         case 0x880: return "Mali T880 (Panfrost)";
 149         case 0x7093: return "Mali G31 (Panfrost)";
 150         case 0x7212: return "Mali G52 (Panfrost)";
 151         default:
 152                     unreachable("Invalid GPU ID");
 153         }
 154 }
 155
 156 void
 157 panfrost_open_device(void *memctx, int fd, struct panfrost_device *dev)
 158 {
 159         dev->fd = fd;
 160         dev->memctx = memctx;
 161         dev->gpu_id = panfrost_query_gpu_version(fd);
 162         dev->core_count = panfrost_query_core_count(fd);
 163         dev->thread_tls_alloc = panfrost_query_thread_tls_alloc(fd);
 164         dev->kernel_version = drmGetVersion(fd);
 165         dev->quirks = panfrost_get_quirks(dev->gpu_id);
 166         dev->compressed_formats = panfrost_query_compressed_formats(fd);
 167
 168         util_sparse_array_init(&dev->bo_map, sizeof(struct panfrost_bo), 512);
 169
 170         pthread_mutex_init(&dev->bo_cache.lock, NULL);
 171         list_inithead(&dev->bo_cache.lru);
 172
 173         for (unsigned i = 0; i < ARRAY_SIZE(dev->bo_cache.buckets); ++i)
 174                 list_inithead(&dev->bo_cache.buckets[i]);
 175 }
 176
 177 void
 178 panfrost_close_device(struct panfrost_device *dev)
 179 {
 180         panfrost_bo_unreference(dev->blit_shaders.bo);
 181         panfrost_bo_cache_evict_all(dev);
 182         pthread_mutex_destroy(&dev->bo_cache.lock);
 183         drmFreeVersion(dev->kernel_version);
 184         util_sparse_array_finish(&dev->bo_map);
 185
 186 }