src/resource/resource-gpu.c

   1 /*
   2  * PASS (Power Aware System Service) - GPU Resource Driver
   3  *
   4  * Copyright (c) 2021 Samsung Electronics Co., Ltd.
   5  *
   6  * Licensed under the Apache License, Version 2.0 (the License);
   7  * you may not use this file except in compliance with the License.
   8  * You may obtain a copy of the License at
   9  *
  10  *     http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * Unless required by applicable law or agreed to in writing, software
  13  * distributed under the License is distributed on an "AS IS" BASIS,
  14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  * See the License for the specific language governing permissions and
  16  * limitations under the License.
  17  */
  18
  19 /**
  20  * @file        resource-gpu.c
  21  * @brief       TBD
  22  * @ingroup     TBD
  23  */
  24
  25 #include <glib.h>
  26
  27 #include <hal/hal-power.h>
  28
  29 #include <util/common.h>
  30 #include <util/devices.h>
  31 #include <util/log.h>
  32
  33 #include <libsyscommon/resource-manager.h>
  34 #include <libsyscommon/resource-type.h>
  35 #include <libsyscommon/resource-device.h>
  36
  37 #include <resource-monitor/resource-monitor.h>
  38
  39 struct gpu_context {
  40         char *device_name;
  41         int index;
  42 };
  43
  44 static int gpu_get_value_from_hal_power(struct syscommon_resman_resource *res,
  45                                 const struct syscommon_resman_resource_attribute *attr,
  46                                 void *data)
  47 {
  48         struct gpu_context *ctx;
  49         int type;
  50         int *val = (int *)data;
  51         int _val;
  52
  53         if (!res || !attr || !data)
  54                 return -EINVAL;
  55
  56         ctx = syscommon_resman_get_resource_privdata(res);
  57         if (!ctx)
  58                 return -EINVAL;
  59
  60         if (!ctx->device_name) {
  61                 _E("%s: GPU_CTRL_DEVICE_ID is not yet initialized\n",
  62                                 syscommon_resman_get_resource_name(res));
  63                 return -EINVAL;
  64         }
  65
  66         type = syscommon_resman_get_resource_type(res);
  67
  68         switch (attr->id) {
  69         case GPU_ATTR_CUR_FREQ:
  70                 _val = hal_power_dvfs_get_curr_freq(type, ctx->device_name);
  71                 break;
  72         case GPU_ATTR_MIN_FREQ:
  73                 _val = hal_power_dvfs_get_min_freq(type, ctx->device_name);
  74                 break;
  75         case GPU_ATTR_MAX_FREQ:
  76                 _val = hal_power_dvfs_get_max_freq(type, ctx->device_name);
  77                 break;
  78         case GPU_ATTR_AVAILABLE_MIN_FREQ:
  79                 _val = hal_power_dvfs_get_available_min_freq(type, ctx->device_name);
  80                 break;
  81         case GPU_ATTR_AVAILABLE_MAX_FREQ:
  82                 _val = hal_power_dvfs_get_available_max_freq(type, ctx->device_name);
  83                 break;
  84         default:
  85                 return -EINVAL;
  86         }
  87
  88         if (_val < 0)
  89                 return -EINVAL;
  90
  91         *val = _val;
  92
  93         return 0;
  94 }
  95
  96 static int gpu_get_string_value(struct syscommon_resman_resource *res,
  97                                 const struct syscommon_resman_resource_attribute *attr,
  98                                 void *data)
  99 {
 100         struct gpu_context *ctx;
 101         char *buf = (char *)data;
 102         int val;
 103
 104         if (!res || !attr || !data)
 105                 return -EINVAL;
 106
 107         ctx = syscommon_resman_get_resource_privdata(res);
 108         if (!ctx)
 109                 return -EINVAL;
 110
 111         if (!ctx->device_name) {
 112                 _E("%s: GPU_CTRL_DEVICE_ID is not yet initialized\n",
 113                                 syscommon_resman_get_resource_name(res));
 114                 return -EINVAL;
 115         }
 116
 117         switch (attr->id) {
 118         case GPU_ATTR_CUR_GOVERNOR:
 119                 val = hal_power_dvfs_get_curr_governor(syscommon_resman_get_resource_type(res),
 120                                                         ctx->device_name, buf);
 121                 if (val < 0)
 122                         return -EINVAL;
 123                 break;
 124         case GPU_ATTR_NAME:
 125                 strncpy(buf, ctx->device_name, BUFF_MAX);
 126                 break;
 127         }
 128
 129         return 0;
 130 }
 131
 132 static const struct syscommon_resman_resource_attribute gpu_attrs[] = {
 133         {
 134                 .name   = "GPU_ATTR_CUR_FREQ",
 135                 .id     = GPU_ATTR_CUR_FREQ,
 136                 .type   = SYSCOMMON_RESMAN_DATA_TYPE_INT,
 137                 .flag   = SYSCOMMON_RESMAN_RESOURCE_ATTR_FLAG_PUBLIC,
 138                 .ops    = {
 139                         .get = gpu_get_value_from_hal_power,
 140                 },
 141         }, {
 142                 .name   = "GPU_ATTR_MIN_FREQ",
 143                 .id     = GPU_ATTR_MIN_FREQ,
 144                 .type   = SYSCOMMON_RESMAN_DATA_TYPE_INT,
 145                 .flag   = SYSCOMMON_RESMAN_RESOURCE_ATTR_FLAG_PUBLIC,
 146                 .ops    = {
 147                         .get = gpu_get_value_from_hal_power,
 148                 },
 149         }, {
 150                 .name   = "GPU_ATTR_MAX_FREQ",
 151                 .id     = GPU_ATTR_MAX_FREQ,
 152                 .type   = SYSCOMMON_RESMAN_DATA_TYPE_INT,
 153                 .flag   = SYSCOMMON_RESMAN_RESOURCE_ATTR_FLAG_PUBLIC,
 154                 .ops    = {
 155                         .get = gpu_get_value_from_hal_power,
 156                 }
 157         }, {
 158                 .name   = "GPU_ATTR_AVAILABLE_MIN_FREQ",
 159                 .id     = GPU_ATTR_AVAILABLE_MIN_FREQ,
 160                 .type   = SYSCOMMON_RESMAN_DATA_TYPE_INT,
 161                 .flag   = SYSCOMMON_RESMAN_RESOURCE_ATTR_FLAG_PUBLIC,
 162                 .ops    = {
 163                         .get = gpu_get_value_from_hal_power,
 164                 }
 165         }, {
 166                 .name   = "GPU_ATTR_AVAILABLE_MAX_FREQ",
 167                 .id     = GPU_ATTR_AVAILABLE_MAX_FREQ,
 168                 .type   = SYSCOMMON_RESMAN_DATA_TYPE_INT,
 169                 .flag   = SYSCOMMON_RESMAN_RESOURCE_ATTR_FLAG_PUBLIC,
 170                 .ops    = {
 171                         .get = gpu_get_value_from_hal_power,
 172                 }
 173         }, {
 174                 .name   = "GPU_ATTR_CUR_GOVERNOR",
 175                 .id     = GPU_ATTR_CUR_GOVERNOR,
 176                 .type   = SYSCOMMON_RESMAN_DATA_TYPE_STRING,
 177                 .flag   = SYSCOMMON_RESMAN_RESOURCE_ATTR_FLAG_PUBLIC,
 178                 .ops    = {
 179                         .get = gpu_get_string_value,
 180                 }
 181         }, {
 182                 .name   = "GPU_ATTR_NAME",
 183                 .id     = GPU_ATTR_NAME,
 184                 .type   = SYSCOMMON_RESMAN_DATA_TYPE_STRING,
 185                 .flag   = SYSCOMMON_RESMAN_RESOURCE_ATTR_FLAG_PUBLIC,
 186                 .ops    = {
 187                         .get = gpu_get_string_value,
 188                 }
 189         },
 190 };
 191
 192 static int gpu_setup_device_id(struct syscommon_resman_resource *res,
 193                                 const struct syscommon_resman_resource_control *ctrl,
 194                                 const void *data)
 195 {
 196         struct gpu_context *ctx;
 197         const struct syscommon_resman_resource_device *device;
 198         int resource_index = (int)(intptr_t)data;
 199
 200         if (!res || !ctrl)
 201                 return -EINVAL;
 202
 203         ctx = syscommon_resman_get_resource_privdata(res);
 204         if (!ctx)
 205                 return -EINVAL;
 206
 207         device = syscommon_resman_find_resource_device(syscommon_resman_get_resource_type(res), resource_index);
 208         if (!device) {
 209                 _E("Not available resource: type: %s, index: %d\n",
 210                                 syscommon_resman_get_resource_name(res), resource_index);
 211                 return -EINVAL;
 212         }
 213
 214         if (ctx->device_name)
 215                 free(ctx->device_name);
 216
 217         ctx->device_name = g_strdup(device->name);
 218         ctx->index = resource_index;
 219
 220         return 0;
 221 }
 222
 223 static const struct syscommon_resman_resource_control gpu_ctrls[] = {
 224         {
 225                 .name = "GPU_CTRL_DEVICE_ID",
 226                 .id = GPU_CTRL_DEVICE_ID,
 227                 .ops = {
 228                         .set = gpu_setup_device_id,
 229                 },
 230         },
 231 };
 232
 233 static int gpu_create(struct syscommon_resman_resource *res)
 234 {
 235         struct gpu_context *ctx;
 236
 237         ctx = calloc(1, sizeof(struct gpu_context));
 238         if (!ctx)
 239                 return -ENOMEM;
 240
 241         syscommon_resman_set_resource_privdata(res, ctx);
 242
 243         return 0;
 244 }
 245
 246 static void gpu_delete(struct syscommon_resman_resource *res)
 247 {
 248         struct gpu_context *ctx;
 249
 250         if (!res)
 251                 return;
 252
 253         ctx = syscommon_resman_get_resource_privdata(res);
 254         if (!ctx)
 255                 return;
 256
 257         if (ctx->device_name) {
 258                 free(ctx->device_name);
 259                 ctx->device_name = NULL;
 260         }
 261         free(ctx);
 262         syscommon_resman_set_resource_privdata(res, NULL);
 263 }
 264
 265 static const struct syscommon_resman_resource_driver gpu_resource_driver = {
 266         .name           = "GPU",
 267         .type           = RESOURCE_TYPE_GPU,
 268         .attrs          = gpu_attrs,
 269         .num_attrs      = ARRAY_SIZE(gpu_attrs),
 270         .ctrls          = gpu_ctrls,
 271         .num_ctrls      = ARRAY_SIZE(gpu_ctrls),
 272         .ops            = {
 273                 .create = gpu_create,
 274                 .delete = gpu_delete,
 275         },
 276 };
 277 SYSCOMMON_RESMAN_RESOURCE_DRIVER_REGISTER(&gpu_resource_driver)