drivers/gpu/drm/msm/adreno/adreno_device.c

   1 /*
   2  * Copyright (C) 2013-2014 Red Hat
   3  * Author: Rob Clark <robdclark@gmail.com>
   4  *
   5  * Copyright (c) 2014,2017 The Linux Foundation. All rights reserved.
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License version 2 as published by
   9  * the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14  * more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along with
  17  * this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <linux/pm_opp.h>
  21 #include "adreno_gpu.h"
  22
  23 #define ANY_ID 0xff
  24
  25 bool hang_debug = false;
  26 MODULE_PARM_DESC(hang_debug, "Dump registers when hang is detected (can be slow!)");
  27 module_param_named(hang_debug, hang_debug, bool, 0600);
  28
  29 static const struct adreno_info gpulist[] = {
  30         {
  31                 .rev   = ADRENO_REV(3, 0, 5, ANY_ID),
  32                 .revn  = 305,
  33                 .name  = "A305",
  34                 .pm4fw = "a300_pm4.fw",
  35                 .pfpfw = "a300_pfp.fw",
  36                 .gmem  = SZ_256K,
  37                 .init  = a3xx_gpu_init,
  38         }, {
  39                 .rev   = ADRENO_REV(3, 0, 6, 0),
  40                 .revn  = 307,        /* because a305c is revn==306 */
  41                 .name  = "A306",
  42                 .pm4fw = "a300_pm4.fw",
  43                 .pfpfw = "a300_pfp.fw",
  44                 .gmem  = SZ_128K,
  45                 .init  = a3xx_gpu_init,
  46         }, {
  47                 .rev   = ADRENO_REV(3, 2, ANY_ID, ANY_ID),
  48                 .revn  = 320,
  49                 .name  = "A320",
  50                 .pm4fw = "a300_pm4.fw",
  51                 .pfpfw = "a300_pfp.fw",
  52                 .gmem  = SZ_512K,
  53                 .init  = a3xx_gpu_init,
  54         }, {
  55                 .rev   = ADRENO_REV(3, 3, 0, ANY_ID),
  56                 .revn  = 330,
  57                 .name  = "A330",
  58                 .pm4fw = "a330_pm4.fw",
  59                 .pfpfw = "a330_pfp.fw",
  60                 .gmem  = SZ_1M,
  61                 .init  = a3xx_gpu_init,
  62         }, {
  63                 .rev   = ADRENO_REV(4, 2, 0, ANY_ID),
  64                 .revn  = 420,
  65                 .name  = "A420",
  66                 .pm4fw = "a420_pm4.fw",
  67                 .pfpfw = "a420_pfp.fw",
  68                 .gmem  = (SZ_1M + SZ_512K),
  69                 .init  = a4xx_gpu_init,
  70         }, {
  71                 .rev   = ADRENO_REV(4, 3, 0, ANY_ID),
  72                 .revn  = 430,
  73                 .name  = "A430",
  74                 .pm4fw = "a420_pm4.fw",
  75                 .pfpfw = "a420_pfp.fw",
  76                 .gmem  = (SZ_1M + SZ_512K),
  77                 .init  = a4xx_gpu_init,
  78         }, {
  79                 .rev = ADRENO_REV(5, 3, 0, 2),
  80                 .revn = 530,
  81                 .name = "A530",
  82                 .pm4fw = "a530_pm4.fw",
  83                 .pfpfw = "a530_pfp.fw",
  84                 .gmem = SZ_1M,
  85                 .quirks = ADRENO_QUIRK_TWO_PASS_USE_WFI |
  86                         ADRENO_QUIRK_FAULT_DETECT_MASK,
  87                 .init = a5xx_gpu_init,
  88                 .gpmufw = "a530v3_gpmu.fw2",
  89                 .zapfw = "a530_zap.mdt",
  90         },
  91 };
  92
  93 MODULE_FIRMWARE("a300_pm4.fw");
  94 MODULE_FIRMWARE("a300_pfp.fw");
  95 MODULE_FIRMWARE("a330_pm4.fw");
  96 MODULE_FIRMWARE("a330_pfp.fw");
  97 MODULE_FIRMWARE("a420_pm4.fw");
  98 MODULE_FIRMWARE("a420_pfp.fw");
  99 MODULE_FIRMWARE("a530_fm4.fw");
 100 MODULE_FIRMWARE("a530_pfp.fw");
 101
 102 static inline bool _rev_match(uint8_t entry, uint8_t id)
 103 {
 104         return (entry == ANY_ID) || (entry == id);
 105 }
 106
 107 const struct adreno_info *adreno_info(struct adreno_rev rev)
 108 {
 109         int i;
 110
 111         /* identify gpu: */
 112         for (i = 0; i < ARRAY_SIZE(gpulist); i++) {
 113                 const struct adreno_info *info = &gpulist[i];
 114                 if (_rev_match(info->rev.core, rev.core) &&
 115                                 _rev_match(info->rev.major, rev.major) &&
 116                                 _rev_match(info->rev.minor, rev.minor) &&
 117                                 _rev_match(info->rev.patchid, rev.patchid))
 118                         return info;
 119         }
 120
 121         return NULL;
 122 }
 123
 124 struct msm_gpu *adreno_load_gpu(struct drm_device *dev)
 125 {
 126         struct msm_drm_private *priv = dev->dev_private;
 127         struct platform_device *pdev = priv->gpu_pdev;
 128         struct adreno_platform_config *config;
 129         struct adreno_rev rev;
 130         const struct adreno_info *info;
 131         struct msm_gpu *gpu = NULL;
 132
 133         if (!pdev) {
 134                 dev_err(dev->dev, "no adreno device\n");
 135                 return NULL;
 136         }
 137
 138         config = pdev->dev.platform_data;
 139         rev = config->rev;
 140         info = adreno_info(config->rev);
 141
 142         if (!info) {
 143                 dev_warn(dev->dev, "Unknown GPU revision: %u.%u.%u.%u\n",
 144                                 rev.core, rev.major, rev.minor, rev.patchid);
 145                 return NULL;
 146         }
 147
 148         DBG("Found GPU: %u.%u.%u.%u",  rev.core, rev.major,
 149                         rev.minor, rev.patchid);
 150
 151         gpu = info->init(dev);
 152         if (IS_ERR(gpu)) {
 153                 dev_warn(dev->dev, "failed to load adreno gpu\n");
 154                 gpu = NULL;
 155                 /* not fatal */
 156         }
 157
 158         if (gpu) {
 159                 int ret;
 160
 161                 pm_runtime_get_sync(&pdev->dev);
 162                 mutex_lock(&dev->struct_mutex);
 163                 ret = msm_gpu_hw_init(gpu);
 164                 mutex_unlock(&dev->struct_mutex);
 165                 pm_runtime_put_sync(&pdev->dev);
 166                 if (ret) {
 167                         dev_err(dev->dev, "gpu hw init failed: %d\n", ret);
 168                         gpu->funcs->destroy(gpu);
 169                         gpu = NULL;
 170                 }
 171         }
 172
 173         return gpu;
 174 }
 175
 176 static void set_gpu_pdev(struct drm_device *dev,
 177                 struct platform_device *pdev)
 178 {
 179         struct msm_drm_private *priv = dev->dev_private;
 180         priv->gpu_pdev = pdev;
 181 }
 182
 183 static int find_chipid(struct device *dev, u32 *chipid)
 184 {
 185         struct device_node *node = dev->of_node;
 186         const char *compat;
 187         int ret;
 188
 189         /* first search the compat strings for qcom,adreno-XYZ.W: */
 190         ret = of_property_read_string_index(node, "compatible", 0, &compat);
 191         if (ret == 0) {
 192                 unsigned rev, patch;
 193
 194                 if (sscanf(compat, "qcom,adreno-%u.%u", &rev, &patch) == 2) {
 195                         *chipid = 0;
 196                         *chipid |= (rev / 100) << 24;  /* core */
 197                         rev %= 100;
 198                         *chipid |= (rev / 10) << 16;   /* major */
 199                         rev %= 10;
 200                         *chipid |= rev << 8;           /* minor */
 201                         *chipid |= patch;
 202
 203                         return 0;
 204                 }
 205         }
 206
 207         /* and if that fails, fall back to legacy "qcom,chipid" property: */
 208         ret = of_property_read_u32(node, "qcom,chipid", chipid);
 209         if (ret)
 210                 return ret;
 211
 212         dev_warn(dev, "Using legacy qcom,chipid binding!\n");
 213         dev_warn(dev, "Use compatible qcom,adreno-%u%u%u.%u instead.\n",
 214                         (*chipid >> 24) & 0xff, (*chipid >> 16) & 0xff,
 215                         (*chipid >> 8) & 0xff, *chipid & 0xff);
 216
 217         return 0;
 218 }
 219
 220 /* Get legacy powerlevels from qcom,gpu-pwrlevels and populate the opp table */
 221 static int adreno_get_legacy_pwrlevels(struct device *dev)
 222 {
 223         struct device_node *child, *node;
 224         int ret;
 225
 226         node = of_find_compatible_node(dev->of_node, NULL,
 227                 "qcom,gpu-pwrlevels");
 228         if (!node) {
 229                 dev_err(dev, "Could not find the GPU powerlevels\n");
 230                 return -ENXIO;
 231         }
 232
 233         for_each_child_of_node(node, child) {
 234                 unsigned int val;
 235
 236                 ret = of_property_read_u32(child, "qcom,gpu-freq", &val);
 237                 if (ret)
 238                         continue;
 239
 240                 /*
 241                  * Skip the intentionally bogus clock value found at the bottom
 242                  * of most legacy frequency tables
 243                  */
 244                 if (val != 27000000)
 245                         dev_pm_opp_add(dev, val, 0);
 246         }
 247
 248         return 0;
 249 }
 250
 251 static int adreno_get_pwrlevels(struct device *dev,
 252                 struct adreno_platform_config *config)
 253 {
 254         unsigned long freq = ULONG_MAX;
 255         struct dev_pm_opp *opp;
 256         int ret;
 257
 258         /* You down with OPP? */
 259         if (!of_find_property(dev->of_node, "operating-points-v2", NULL))
 260                 ret = adreno_get_legacy_pwrlevels(dev);
 261         else
 262                 ret = dev_pm_opp_of_add_table(dev);
 263
 264         if (ret)
 265                 return ret;
 266
 267         /* Find the fastest defined rate */
 268         opp = dev_pm_opp_find_freq_floor(dev, &freq);
 269         if (!IS_ERR(opp))
 270                 config->fast_rate = dev_pm_opp_get_freq(opp);
 271
 272         if (!config->fast_rate) {
 273                 DRM_DEV_INFO(dev,
 274                         "Could not find clock rate. Using default\n");
 275                 /* Pick a suitably safe clock speed for any target */
 276                 config->fast_rate = 200000000;
 277         }
 278
 279         return 0;
 280 }
 281
 282 static int adreno_bind(struct device *dev, struct device *master, void *data)
 283 {
 284         static struct adreno_platform_config config = {};
 285         u32 val;
 286         int ret;
 287
 288         ret = find_chipid(dev, &val);
 289         if (ret) {
 290                 dev_err(dev, "could not find chipid: %d\n", ret);
 291                 return ret;
 292         }
 293
 294         config.rev = ADRENO_REV((val >> 24) & 0xff,
 295                         (val >> 16) & 0xff, (val >> 8) & 0xff, val & 0xff);
 296
 297         /* find clock rates: */
 298         config.fast_rate = 0;
 299
 300         ret = adreno_get_pwrlevels(dev, &config);
 301         if (ret)
 302                 return ret;
 303
 304         dev->platform_data = &config;
 305         set_gpu_pdev(dev_get_drvdata(master), to_platform_device(dev));
 306         return 0;
 307 }
 308
 309 static void adreno_unbind(struct device *dev, struct device *master,
 310                 void *data)
 311 {
 312         set_gpu_pdev(dev_get_drvdata(master), NULL);
 313 }
 314
 315 static const struct component_ops a3xx_ops = {
 316                 .bind   = adreno_bind,
 317                 .unbind = adreno_unbind,
 318 };
 319
 320 static int adreno_probe(struct platform_device *pdev)
 321 {
 322         return component_add(&pdev->dev, &a3xx_ops);
 323 }
 324
 325 static int adreno_remove(struct platform_device *pdev)
 326 {
 327         component_del(&pdev->dev, &a3xx_ops);
 328         return 0;
 329 }
 330
 331 static const struct of_device_id dt_match[] = {
 332         { .compatible = "qcom,adreno" },
 333         { .compatible = "qcom,adreno-3xx" },
 334         /* for backwards compat w/ downstream kgsl DT files: */
 335         { .compatible = "qcom,kgsl-3d0" },
 336         {}
 337 };
 338
 339 #ifdef CONFIG_PM
 340 static int adreno_resume(struct device *dev)
 341 {
 342         struct platform_device *pdev = to_platform_device(dev);
 343         struct msm_gpu *gpu = platform_get_drvdata(pdev);
 344
 345         return gpu->funcs->pm_resume(gpu);
 346 }
 347
 348 static int adreno_suspend(struct device *dev)
 349 {
 350         struct platform_device *pdev = to_platform_device(dev);
 351         struct msm_gpu *gpu = platform_get_drvdata(pdev);
 352
 353         return gpu->funcs->pm_suspend(gpu);
 354 }
 355 #endif
 356
 357 static const struct dev_pm_ops adreno_pm_ops = {
 358         SET_RUNTIME_PM_OPS(adreno_suspend, adreno_resume, NULL)
 359 };
 360
 361 static struct platform_driver adreno_driver = {
 362         .probe = adreno_probe,
 363         .remove = adreno_remove,
 364         .driver = {
 365                 .name = "adreno",
 366                 .of_match_table = dt_match,
 367                 .pm = &adreno_pm_ops,
 368         },
 369 };
 370
 371 void __init adreno_register(void)
 372 {
 373         platform_driver_register(&adreno_driver);
 374 }
 375
 376 void __exit adreno_unregister(void)
 377 {
 378         platform_driver_unregister(&adreno_driver);
 379 }