drivers/soc/qcom/socinfo.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2009-2017, The Linux Foundation. All rights reserved.
   4  * Copyright (c) 2017-2019, Linaro Ltd.
   5  */
   6
   7 #include <linux/debugfs.h>
   8 #include <linux/err.h>
   9 #include <linux/module.h>
  10 #include <linux/platform_device.h>
  11 #include <linux/random.h>
  12 #include <linux/slab.h>
  13 #include <linux/soc/qcom/smem.h>
  14 #include <linux/string.h>
  15 #include <linux/sys_soc.h>
  16 #include <linux/types.h>
  17
  18 /*
  19  * SoC version type with major number in the upper 16 bits and minor
  20  * number in the lower 16 bits.
  21  */
  22 #define SOCINFO_MAJOR(ver) (((ver) >> 16) & 0xffff)
  23 #define SOCINFO_MINOR(ver) ((ver) & 0xffff)
  24 #define SOCINFO_VERSION(maj, min)  ((((maj) & 0xffff) << 16)|((min) & 0xffff))
  25
  26 #define SMEM_SOCINFO_BUILD_ID_LENGTH           32
  27
  28 /*
  29  * SMEM item id, used to acquire handles to respective
  30  * SMEM region.
  31  */
  32 #define SMEM_HW_SW_BUILD_ID            137
  33
  34 #ifdef CONFIG_DEBUG_FS
  35 #define SMEM_IMAGE_VERSION_BLOCKS_COUNT        32
  36 #define SMEM_IMAGE_VERSION_SIZE                4096
  37 #define SMEM_IMAGE_VERSION_NAME_SIZE           75
  38 #define SMEM_IMAGE_VERSION_VARIANT_SIZE        20
  39 #define SMEM_IMAGE_VERSION_OEM_SIZE            32
  40
  41 /*
  42  * SMEM Image table indices
  43  */
  44 #define SMEM_IMAGE_TABLE_BOOT_INDEX     0
  45 #define SMEM_IMAGE_TABLE_TZ_INDEX       1
  46 #define SMEM_IMAGE_TABLE_RPM_INDEX      3
  47 #define SMEM_IMAGE_TABLE_APPS_INDEX     10
  48 #define SMEM_IMAGE_TABLE_MPSS_INDEX     11
  49 #define SMEM_IMAGE_TABLE_ADSP_INDEX     12
  50 #define SMEM_IMAGE_TABLE_CNSS_INDEX     13
  51 #define SMEM_IMAGE_TABLE_VIDEO_INDEX    14
  52 #define SMEM_IMAGE_VERSION_TABLE       469
  53
  54 /*
  55  * SMEM Image table names
  56  */
  57 static const char *const socinfo_image_names[] = {
  58         [SMEM_IMAGE_TABLE_ADSP_INDEX] = "adsp",
  59         [SMEM_IMAGE_TABLE_APPS_INDEX] = "apps",
  60         [SMEM_IMAGE_TABLE_BOOT_INDEX] = "boot",
  61         [SMEM_IMAGE_TABLE_CNSS_INDEX] = "cnss",
  62         [SMEM_IMAGE_TABLE_MPSS_INDEX] = "mpss",
  63         [SMEM_IMAGE_TABLE_RPM_INDEX] = "rpm",
  64         [SMEM_IMAGE_TABLE_TZ_INDEX] = "tz",
  65         [SMEM_IMAGE_TABLE_VIDEO_INDEX] = "video",
  66 };
  67
  68 static const char *const pmic_models[] = {
  69         [0]  = "Unknown PMIC model",
  70         [9]  = "PM8994",
  71         [11] = "PM8916",
  72         [13] = "PM8058",
  73         [14] = "PM8028",
  74         [15] = "PM8901",
  75         [16] = "PM8027",
  76         [17] = "ISL9519",
  77         [18] = "PM8921",
  78         [19] = "PM8018",
  79         [20] = "PM8015",
  80         [21] = "PM8014",
  81         [22] = "PM8821",
  82         [23] = "PM8038",
  83         [24] = "PM8922",
  84         [25] = "PM8917",
  85 };
  86 #endif /* CONFIG_DEBUG_FS */
  87
  88 /* Socinfo SMEM item structure */
  89 struct socinfo {
  90         __le32 fmt;
  91         __le32 id;
  92         __le32 ver;
  93         char build_id[SMEM_SOCINFO_BUILD_ID_LENGTH];
  94         /* Version 2 */
  95         __le32 raw_id;
  96         __le32 raw_ver;
  97         /* Version 3 */
  98         __le32 hw_plat;
  99         /* Version 4 */
 100         __le32 plat_ver;
 101         /* Version 5 */
 102         __le32 accessory_chip;
 103         /* Version 6 */
 104         __le32 hw_plat_subtype;
 105         /* Version 7 */
 106         __le32 pmic_model;
 107         __le32 pmic_die_rev;
 108         /* Version 8 */
 109         __le32 pmic_model_1;
 110         __le32 pmic_die_rev_1;
 111         __le32 pmic_model_2;
 112         __le32 pmic_die_rev_2;
 113         /* Version 9 */
 114         __le32 foundry_id;
 115         /* Version 10 */
 116         __le32 serial_num;
 117         /* Version 11 */
 118         __le32 num_pmics;
 119         __le32 pmic_array_offset;
 120         /* Version 12 */
 121         __le32 chip_family;
 122         __le32 raw_device_family;
 123         __le32 raw_device_num;
 124 };
 125
 126 #ifdef CONFIG_DEBUG_FS
 127 struct socinfo_params {
 128         u32 raw_device_family;
 129         u32 hw_plat_subtype;
 130         u32 accessory_chip;
 131         u32 raw_device_num;
 132         u32 chip_family;
 133         u32 foundry_id;
 134         u32 plat_ver;
 135         u32 raw_ver;
 136         u32 hw_plat;
 137         u32 fmt;
 138 };
 139
 140 struct smem_image_version {
 141         char name[SMEM_IMAGE_VERSION_NAME_SIZE];
 142         char variant[SMEM_IMAGE_VERSION_VARIANT_SIZE];
 143         char pad;
 144         char oem[SMEM_IMAGE_VERSION_OEM_SIZE];
 145 };
 146 #endif /* CONFIG_DEBUG_FS */
 147
 148 struct qcom_socinfo {
 149         struct soc_device *soc_dev;
 150         struct soc_device_attribute attr;
 151 #ifdef CONFIG_DEBUG_FS
 152         struct dentry *dbg_root;
 153         struct socinfo_params info;
 154 #endif /* CONFIG_DEBUG_FS */
 155 };
 156
 157 struct soc_id {
 158         unsigned int id;
 159         const char *name;
 160 };
 161
 162 static const struct soc_id soc_id[] = {
 163         { 87, "MSM8960" },
 164         { 109, "APQ8064" },
 165         { 122, "MSM8660A" },
 166         { 123, "MSM8260A" },
 167         { 124, "APQ8060A" },
 168         { 126, "MSM8974" },
 169         { 130, "MPQ8064" },
 170         { 138, "MSM8960AB" },
 171         { 139, "APQ8060AB" },
 172         { 140, "MSM8260AB" },
 173         { 141, "MSM8660AB" },
 174         { 178, "APQ8084" },
 175         { 184, "APQ8074" },
 176         { 185, "MSM8274" },
 177         { 186, "MSM8674" },
 178         { 194, "MSM8974PRO" },
 179         { 206, "MSM8916" },
 180         { 208, "APQ8074-AA" },
 181         { 209, "APQ8074-AB" },
 182         { 210, "APQ8074PRO" },
 183         { 211, "MSM8274-AA" },
 184         { 212, "MSM8274-AB" },
 185         { 213, "MSM8274PRO" },
 186         { 214, "MSM8674-AA" },
 187         { 215, "MSM8674-AB" },
 188         { 216, "MSM8674PRO" },
 189         { 217, "MSM8974-AA" },
 190         { 218, "MSM8974-AB" },
 191         { 246, "MSM8996" },
 192         { 247, "APQ8016" },
 193         { 248, "MSM8216" },
 194         { 249, "MSM8116" },
 195         { 250, "MSM8616" },
 196         { 291, "APQ8096" },
 197         { 305, "MSM8996SG" },
 198         { 310, "MSM8996AU" },
 199         { 311, "APQ8096AU" },
 200         { 312, "APQ8096SG" },
 201 };
 202
 203 static const char *socinfo_machine(struct device *dev, unsigned int id)
 204 {
 205         int idx;
 206
 207         for (idx = 0; idx < ARRAY_SIZE(soc_id); idx++) {
 208                 if (soc_id[idx].id == id)
 209                         return soc_id[idx].name;
 210         }
 211
 212         return NULL;
 213 }
 214
 215 #ifdef CONFIG_DEBUG_FS
 216
 217 #define QCOM_OPEN(name, _func)                                          \
 218 static int qcom_open_##name(struct inode *inode, struct file *file)     \
 219 {                                                                       \
 220         return single_open(file, _func, inode->i_private);              \
 221 }                                                                       \
 222                                                                         \
 223 static const struct file_operations qcom_ ##name## _ops = {             \
 224         .open = qcom_open_##name,                                       \
 225         .read = seq_read,                                               \
 226         .llseek = seq_lseek,                                            \
 227         .release = single_release,                                      \
 228 }
 229
 230 #define DEBUGFS_ADD(info, name)                                         \
 231         debugfs_create_file(__stringify(name), 0400,                    \
 232                             qcom_socinfo->dbg_root,                     \
 233                             info, &qcom_ ##name## _ops)
 234
 235
 236 static int qcom_show_build_id(struct seq_file *seq, void *p)
 237 {
 238         struct socinfo *socinfo = seq->private;
 239
 240         seq_printf(seq, "%s\n", socinfo->build_id);
 241
 242         return 0;
 243 }
 244
 245 static int qcom_show_pmic_model(struct seq_file *seq, void *p)
 246 {
 247         struct socinfo *socinfo = seq->private;
 248         int model = SOCINFO_MINOR(le32_to_cpu(socinfo->pmic_model));
 249
 250         if (model < 0)
 251                 return -EINVAL;
 252
 253         seq_printf(seq, "%s\n", pmic_models[model]);
 254
 255         return 0;
 256 }
 257
 258 static int qcom_show_pmic_die_revision(struct seq_file *seq, void *p)
 259 {
 260         struct socinfo *socinfo = seq->private;
 261
 262         seq_printf(seq, "%u.%u\n",
 263                    SOCINFO_MAJOR(le32_to_cpu(socinfo->pmic_die_rev)),
 264                    SOCINFO_MINOR(le32_to_cpu(socinfo->pmic_die_rev)));
 265
 266         return 0;
 267 }
 268
 269 QCOM_OPEN(build_id, qcom_show_build_id);
 270 QCOM_OPEN(pmic_model, qcom_show_pmic_model);
 271 QCOM_OPEN(pmic_die_rev, qcom_show_pmic_die_revision);
 272
 273 #define DEFINE_IMAGE_OPS(type)                                  \
 274 static int show_image_##type(struct seq_file *seq, void *p)               \
 275 {                                                                 \
 276         struct smem_image_version *image_version = seq->private;  \
 277         seq_puts(seq, image_version->type);                       \
 278         seq_puts(seq, "\n");                                      \
 279         return 0;                                                 \
 280 }                                                                 \
 281 static int open_image_##type(struct inode *inode, struct file *file)      \
 282 {                                                                         \
 283         return single_open(file, show_image_##type, inode->i_private); \
 284 }                                                                         \
 285                                                                           \
 286 static const struct file_operations qcom_image_##type##_ops = {   \
 287         .open = open_image_##type,                                        \
 288         .read = seq_read,                                                 \
 289         .llseek = seq_lseek,                                              \
 290         .release = single_release,                                        \
 291 }
 292
 293 DEFINE_IMAGE_OPS(name);
 294 DEFINE_IMAGE_OPS(variant);
 295 DEFINE_IMAGE_OPS(oem);
 296
 297 static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo,
 298                                  struct socinfo *info)
 299 {
 300         struct smem_image_version *versions;
 301         struct dentry *dentry;
 302         size_t size;
 303         int i;
 304
 305         qcom_socinfo->dbg_root = debugfs_create_dir("qcom_socinfo", NULL);
 306
 307         qcom_socinfo->info.fmt = __le32_to_cpu(info->fmt);
 308
 309         switch (qcom_socinfo->info.fmt) {
 310         case SOCINFO_VERSION(0, 12):
 311                 qcom_socinfo->info.chip_family =
 312                         __le32_to_cpu(info->chip_family);
 313                 qcom_socinfo->info.raw_device_family =
 314                         __le32_to_cpu(info->raw_device_family);
 315                 qcom_socinfo->info.raw_device_num =
 316                         __le32_to_cpu(info->raw_device_num);
 317
 318                 debugfs_create_x32("chip_family", 0400, qcom_socinfo->dbg_root,
 319                                    &qcom_socinfo->info.chip_family);
 320                 debugfs_create_x32("raw_device_family", 0400,
 321                                    qcom_socinfo->dbg_root,
 322                                    &qcom_socinfo->info.raw_device_family);
 323                 debugfs_create_x32("raw_device_number", 0400,
 324                                    qcom_socinfo->dbg_root,
 325                                    &qcom_socinfo->info.raw_device_num);
 326                 /* Fall through */
 327         case SOCINFO_VERSION(0, 11):
 328         case SOCINFO_VERSION(0, 10):
 329         case SOCINFO_VERSION(0, 9):
 330                 qcom_socinfo->info.foundry_id = __le32_to_cpu(info->foundry_id);
 331
 332                 debugfs_create_u32("foundry_id", 0400, qcom_socinfo->dbg_root,
 333                                    &qcom_socinfo->info.foundry_id);
 334                 /* Fall through */
 335         case SOCINFO_VERSION(0, 8):
 336         case SOCINFO_VERSION(0, 7):
 337                 DEBUGFS_ADD(info, pmic_model);
 338                 DEBUGFS_ADD(info, pmic_die_rev);
 339                 /* Fall through */
 340         case SOCINFO_VERSION(0, 6):
 341                 qcom_socinfo->info.hw_plat_subtype =
 342                         __le32_to_cpu(info->hw_plat_subtype);
 343
 344                 debugfs_create_u32("hardware_platform_subtype", 0400,
 345                                    qcom_socinfo->dbg_root,
 346                                    &qcom_socinfo->info.hw_plat_subtype);
 347                 /* Fall through */
 348         case SOCINFO_VERSION(0, 5):
 349                 qcom_socinfo->info.accessory_chip =
 350                         __le32_to_cpu(info->accessory_chip);
 351
 352                 debugfs_create_u32("accessory_chip", 0400,
 353                                    qcom_socinfo->dbg_root,
 354                                    &qcom_socinfo->info.accessory_chip);
 355                 /* Fall through */
 356         case SOCINFO_VERSION(0, 4):
 357                 qcom_socinfo->info.plat_ver = __le32_to_cpu(info->plat_ver);
 358
 359                 debugfs_create_u32("platform_version", 0400,
 360                                    qcom_socinfo->dbg_root,
 361                                    &qcom_socinfo->info.plat_ver);
 362                 /* Fall through */
 363         case SOCINFO_VERSION(0, 3):
 364                 qcom_socinfo->info.hw_plat = __le32_to_cpu(info->hw_plat);
 365
 366                 debugfs_create_u32("hardware_platform", 0400,
 367                                    qcom_socinfo->dbg_root,
 368                                    &qcom_socinfo->info.hw_plat);
 369                 /* Fall through */
 370         case SOCINFO_VERSION(0, 2):
 371                 qcom_socinfo->info.raw_ver  = __le32_to_cpu(info->raw_ver);
 372
 373                 debugfs_create_u32("raw_version", 0400, qcom_socinfo->dbg_root,
 374                                    &qcom_socinfo->info.raw_ver);
 375                 /* Fall through */
 376         case SOCINFO_VERSION(0, 1):
 377                 DEBUGFS_ADD(info, build_id);
 378                 break;
 379         }
 380
 381         versions = qcom_smem_get(QCOM_SMEM_HOST_ANY, SMEM_IMAGE_VERSION_TABLE,
 382                                  &size);
 383
 384         for (i = 0; i < ARRAY_SIZE(socinfo_image_names); i++) {
 385                 if (!socinfo_image_names[i])
 386                         continue;
 387
 388                 dentry = debugfs_create_dir(socinfo_image_names[i],
 389                                             qcom_socinfo->dbg_root);
 390                 debugfs_create_file("name", 0400, dentry, &versions[i],
 391                                     &qcom_image_name_ops);
 392                 debugfs_create_file("variant", 0400, dentry, &versions[i],
 393                                     &qcom_image_variant_ops);
 394                 debugfs_create_file("oem", 0400, dentry, &versions[i],
 395                                     &qcom_image_oem_ops);
 396         }
 397 }
 398
 399 static void socinfo_debugfs_exit(struct qcom_socinfo *qcom_socinfo)
 400 {
 401         debugfs_remove_recursive(qcom_socinfo->dbg_root);
 402 }
 403 #else
 404 static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo,
 405                                  struct socinfo *info)
 406 {
 407 }
 408 static void socinfo_debugfs_exit(struct qcom_socinfo *qcom_socinfo) {  }
 409 #endif /* CONFIG_DEBUG_FS */
 410
 411 static int qcom_socinfo_probe(struct platform_device *pdev)
 412 {
 413         struct qcom_socinfo *qs;
 414         struct socinfo *info;
 415         size_t item_size;
 416
 417         info = qcom_smem_get(QCOM_SMEM_HOST_ANY, SMEM_HW_SW_BUILD_ID,
 418                               &item_size);
 419         if (IS_ERR(info)) {
 420                 dev_err(&pdev->dev, "Couldn't find socinfo\n");
 421                 return PTR_ERR(info);
 422         }
 423
 424         qs = devm_kzalloc(&pdev->dev, sizeof(*qs), GFP_KERNEL);
 425         if (!qs)
 426                 return -ENOMEM;
 427
 428         qs->attr.family = "Snapdragon";
 429         qs->attr.machine = socinfo_machine(&pdev->dev,
 430                                            le32_to_cpu(info->id));
 431         qs->attr.soc_id = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%u",
 432                                          le32_to_cpu(info->id));
 433         qs->attr.revision = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%u.%u",
 434                                            SOCINFO_MAJOR(le32_to_cpu(info->ver)),
 435                                            SOCINFO_MINOR(le32_to_cpu(info->ver)));
 436         if (offsetof(struct socinfo, serial_num) <= item_size)
 437                 qs->attr.serial_number = devm_kasprintf(&pdev->dev, GFP_KERNEL,
 438                                                         "%u",
 439                                                         le32_to_cpu(info->serial_num));
 440
 441         qs->soc_dev = soc_device_register(&qs->attr);
 442         if (IS_ERR(qs->soc_dev))
 443                 return PTR_ERR(qs->soc_dev);
 444
 445         socinfo_debugfs_init(qs, info);
 446
 447         /* Feed the soc specific unique data into entropy pool */
 448         add_device_randomness(info, item_size);
 449
 450         platform_set_drvdata(pdev, qs);
 451
 452         return 0;
 453 }
 454
 455 static int qcom_socinfo_remove(struct platform_device *pdev)
 456 {
 457         struct qcom_socinfo *qs = platform_get_drvdata(pdev);
 458
 459         soc_device_unregister(qs->soc_dev);
 460
 461         socinfo_debugfs_exit(qs);
 462
 463         return 0;
 464 }
 465
 466 static struct platform_driver qcom_socinfo_driver = {
 467         .probe = qcom_socinfo_probe,
 468         .remove = qcom_socinfo_remove,
 469         .driver  = {
 470                 .name = "qcom-socinfo",
 471         },
 472 };
 473
 474 module_platform_driver(qcom_socinfo_driver);
 475
 476 MODULE_DESCRIPTION("Qualcomm SoCinfo driver");
 477 MODULE_LICENSE("GPL v2");
 478 MODULE_ALIAS("platform:qcom-socinfo");