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 msm_gpu *gpu = NULL;
 129         int ret;
 130
 131         if (pdev)
 132                 gpu = platform_get_drvdata(pdev);
 133
 134         if (!gpu) {
 135                 dev_err_once(dev->dev, "no GPU device was found\n");
 136                 return NULL;
 137         }
 138
 139         pm_runtime_get_sync(&pdev->dev);
 140         mutex_lock(&dev->struct_mutex);
 141         ret = msm_gpu_hw_init(gpu);
 142         mutex_unlock(&dev->struct_mutex);
 143         pm_runtime_put_sync(&pdev->dev);
 144         if (ret) {
 145                 dev_err(dev->dev, "gpu hw init failed: %d\n", ret);
 146                 return NULL;
 147         }
 148
 149         return gpu;
 150 }
 151
 152 static void set_gpu_pdev(struct drm_device *dev,
 153                 struct platform_device *pdev)
 154 {
 155         struct msm_drm_private *priv = dev->dev_private;
 156         priv->gpu_pdev = pdev;
 157 }
 158
 159 static int find_chipid(struct device *dev, u32 *chipid)
 160 {
 161         struct device_node *node = dev->of_node;
 162         const char *compat;
 163         int ret;
 164
 165         /* first search the compat strings for qcom,adreno-XYZ.W: */
 166         ret = of_property_read_string_index(node, "compatible", 0, &compat);
 167         if (ret == 0) {
 168                 unsigned rev, patch;
 169
 170                 if (sscanf(compat, "qcom,adreno-%u.%u", &rev, &patch) == 2) {
 171                         *chipid = 0;
 172                         *chipid |= (rev / 100) << 24;  /* core */
 173                         rev %= 100;
 174                         *chipid |= (rev / 10) << 16;   /* major */
 175                         rev %= 10;
 176                         *chipid |= rev << 8;           /* minor */
 177                         *chipid |= patch;
 178
 179                         return 0;
 180                 }
 181         }
 182
 183         /* and if that fails, fall back to legacy "qcom,chipid" property: */
 184         ret = of_property_read_u32(node, "qcom,chipid", chipid);
 185         if (ret)
 186                 return ret;
 187
 188         dev_warn(dev, "Using legacy qcom,chipid binding!\n");
 189         dev_warn(dev, "Use compatible qcom,adreno-%u%u%u.%u instead.\n",
 190                         (*chipid >> 24) & 0xff, (*chipid >> 16) & 0xff,
 191                         (*chipid >> 8) & 0xff, *chipid & 0xff);
 192
 193         return 0;
 194 }
 195
 196 /* Get legacy powerlevels from qcom,gpu-pwrlevels and populate the opp table */
 197 static int adreno_get_legacy_pwrlevels(struct device *dev)
 198 {
 199         struct device_node *child, *node;
 200         int ret;
 201
 202         node = of_get_compatible_child(dev->of_node, "qcom,gpu-pwrlevels");
 203         if (!node) {
 204                 dev_err(dev, "Could not find the GPU powerlevels\n");
 205                 return -ENXIO;
 206         }
 207
 208         for_each_child_of_node(node, child) {
 209                 unsigned int val;
 210
 211                 ret = of_property_read_u32(child, "qcom,gpu-freq", &val);
 212                 if (ret)
 213                         continue;
 214
 215                 /*
 216                  * Skip the intentionally bogus clock value found at the bottom
 217                  * of most legacy frequency tables
 218                  */
 219                 if (val != 27000000)
 220                         dev_pm_opp_add(dev, val, 0);
 221         }
 222
 223         of_node_put(node);
 224
 225         return 0;
 226 }
 227
 228 static int adreno_get_pwrlevels(struct device *dev,
 229                 struct adreno_platform_config *config)
 230 {
 231         unsigned long freq = ULONG_MAX;
 232         struct dev_pm_opp *opp;
 233         int ret;
 234
 235         /* You down with OPP? */
 236         if (!of_find_property(dev->of_node, "operating-points-v2", NULL))
 237                 ret = adreno_get_legacy_pwrlevels(dev);
 238         else
 239                 ret = dev_pm_opp_of_add_table(dev);
 240
 241         if (ret)
 242                 return ret;
 243
 244         /* Find the fastest defined rate */
 245         opp = dev_pm_opp_find_freq_floor(dev, &freq);
 246         if (!IS_ERR(opp))
 247                 config->fast_rate = dev_pm_opp_get_freq(opp);
 248
 249         if (!config->fast_rate) {
 250                 DRM_DEV_INFO(dev,
 251                         "Could not find clock rate. Using default\n");
 252                 /* Pick a suitably safe clock speed for any target */
 253                 config->fast_rate = 200000000;
 254         }
 255
 256         return 0;
 257 }
 258
 259 static int adreno_bind(struct device *dev, struct device *master, void *data)
 260 {
 261         static struct adreno_platform_config config = {};
 262         const struct adreno_info *info;
 263         struct drm_device *drm = dev_get_drvdata(master);
 264         struct msm_gpu *gpu;
 265         u32 val;
 266         int ret;
 267
 268         ret = find_chipid(dev, &val);
 269         if (ret) {
 270                 dev_err(dev, "could not find chipid: %d\n", ret);
 271                 return ret;
 272         }
 273
 274         config.rev = ADRENO_REV((val >> 24) & 0xff,
 275                         (val >> 16) & 0xff, (val >> 8) & 0xff, val & 0xff);
 276
 277         /* find clock rates: */
 278         config.fast_rate = 0;
 279
 280         ret = adreno_get_pwrlevels(dev, &config);
 281         if (ret)
 282                 return ret;
 283
 284         dev->platform_data = &config;
 285         set_gpu_pdev(drm, to_platform_device(dev));
 286
 287         info = adreno_info(config.rev);
 288
 289         if (!info) {
 290                 dev_warn(drm->dev, "Unknown GPU revision: %u.%u.%u.%u\n",
 291                         config.rev.core, config.rev.major,
 292                         config.rev.minor, config.rev.patchid);
 293                 return -ENXIO;
 294         }
 295
 296         DBG("Found GPU: %u.%u.%u.%u", config.rev.core, config.rev.major,
 297                 config.rev.minor, config.rev.patchid);
 298
 299         gpu = info->init(drm);
 300         if (IS_ERR(gpu)) {
 301                 dev_warn(drm->dev, "failed to load adreno gpu\n");
 302                 return PTR_ERR(gpu);
 303         }
 304
 305         dev_set_drvdata(dev, gpu);
 306
 307         return 0;
 308 }
 309
 310 static void adreno_unbind(struct device *dev, struct device *master,
 311                 void *data)
 312 {
 313         struct msm_gpu *gpu = dev_get_drvdata(dev);
 314
 315         gpu->funcs->pm_suspend(gpu);
 316         gpu->funcs->destroy(gpu);
 317
 318         set_gpu_pdev(dev_get_drvdata(master), NULL);
 319 }
 320
 321 static const struct component_ops a3xx_ops = {
 322                 .bind   = adreno_bind,
 323                 .unbind = adreno_unbind,
 324 };
 325
 326 static int adreno_probe(struct platform_device *pdev)
 327 {
 328         return component_add(&pdev->dev, &a3xx_ops);
 329 }
 330
 331 static int adreno_remove(struct platform_device *pdev)
 332 {
 333         component_del(&pdev->dev, &a3xx_ops);
 334         return 0;
 335 }
 336
 337 static const struct of_device_id dt_match[] = {
 338         { .compatible = "qcom,adreno" },
 339         { .compatible = "qcom,adreno-3xx" },
 340         /* for backwards compat w/ downstream kgsl DT files: */
 341         { .compatible = "qcom,kgsl-3d0" },
 342         {}
 343 };
 344
 345 #ifdef CONFIG_PM
 346 static int adreno_resume(struct device *dev)
 347 {
 348         struct platform_device *pdev = to_platform_device(dev);
 349         struct msm_gpu *gpu = platform_get_drvdata(pdev);
 350
 351         return gpu->funcs->pm_resume(gpu);
 352 }
 353
 354 static int adreno_suspend(struct device *dev)
 355 {
 356         struct platform_device *pdev = to_platform_device(dev);
 357         struct msm_gpu *gpu = platform_get_drvdata(pdev);
 358
 359         return gpu->funcs->pm_suspend(gpu);
 360 }
 361 #endif
 362
 363 static const struct dev_pm_ops adreno_pm_ops = {
 364         SET_RUNTIME_PM_OPS(adreno_suspend, adreno_resume, NULL)
 365 };
 366
 367 static struct platform_driver adreno_driver = {
 368         .probe = adreno_probe,
 369         .remove = adreno_remove,
 370         .driver = {
 371                 .name = "adreno",
 372                 .of_match_table = dt_match,
 373                 .pm = &adreno_pm_ops,
 374         },
 375 };
 376
 377 void __init adreno_register(void)
 378 {
 379         platform_driver_register(&adreno_driver);
 380 }
 381
 382 void __exit adreno_unregister(void)
 383 {
 384         platform_driver_unregister(&adreno_driver);
 385 }