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 #define SMEM_SOCINFO_CHIP_ID_LENGTH            32
  28
  29 /*
  30  * SMEM item id, used to acquire handles to respective
  31  * SMEM region.
  32  */
  33 #define SMEM_HW_SW_BUILD_ID            137
  34
  35 #ifdef CONFIG_DEBUG_FS
  36 #define SMEM_IMAGE_VERSION_BLOCKS_COUNT        32
  37 #define SMEM_IMAGE_VERSION_SIZE                4096
  38 #define SMEM_IMAGE_VERSION_NAME_SIZE           75
  39 #define SMEM_IMAGE_VERSION_VARIANT_SIZE        20
  40 #define SMEM_IMAGE_VERSION_OEM_SIZE            32
  41
  42 /*
  43  * SMEM Image table indices
  44  */
  45 #define SMEM_IMAGE_TABLE_BOOT_INDEX     0
  46 #define SMEM_IMAGE_TABLE_TZ_INDEX       1
  47 #define SMEM_IMAGE_TABLE_RPM_INDEX      3
  48 #define SMEM_IMAGE_TABLE_APPS_INDEX     10
  49 #define SMEM_IMAGE_TABLE_MPSS_INDEX     11
  50 #define SMEM_IMAGE_TABLE_ADSP_INDEX     12
  51 #define SMEM_IMAGE_TABLE_CNSS_INDEX     13
  52 #define SMEM_IMAGE_TABLE_VIDEO_INDEX    14
  53 #define SMEM_IMAGE_VERSION_TABLE       469
  54
  55 /*
  56  * SMEM Image table names
  57  */
  58 static const char *const socinfo_image_names[] = {
  59         [SMEM_IMAGE_TABLE_ADSP_INDEX] = "adsp",
  60         [SMEM_IMAGE_TABLE_APPS_INDEX] = "apps",
  61         [SMEM_IMAGE_TABLE_BOOT_INDEX] = "boot",
  62         [SMEM_IMAGE_TABLE_CNSS_INDEX] = "cnss",
  63         [SMEM_IMAGE_TABLE_MPSS_INDEX] = "mpss",
  64         [SMEM_IMAGE_TABLE_RPM_INDEX] = "rpm",
  65         [SMEM_IMAGE_TABLE_TZ_INDEX] = "tz",
  66         [SMEM_IMAGE_TABLE_VIDEO_INDEX] = "video",
  67 };
  68
  69 static const char *const pmic_models[] = {
  70         [0]  = "Unknown PMIC model",
  71         [9]  = "PM8994",
  72         [11] = "PM8916",
  73         [13] = "PM8058",
  74         [14] = "PM8028",
  75         [15] = "PM8901",
  76         [16] = "PM8027",
  77         [17] = "ISL9519",
  78         [18] = "PM8921",
  79         [19] = "PM8018",
  80         [20] = "PM8015",
  81         [21] = "PM8014",
  82         [22] = "PM8821",
  83         [23] = "PM8038",
  84         [24] = "PM8922",
  85         [25] = "PM8917",
  86 };
  87 #endif /* CONFIG_DEBUG_FS */
  88
  89 /* Socinfo SMEM item structure */
  90 struct socinfo {
  91         __le32 fmt;
  92         __le32 id;
  93         __le32 ver;
  94         char build_id[SMEM_SOCINFO_BUILD_ID_LENGTH];
  95         /* Version 2 */
  96         __le32 raw_id;
  97         __le32 raw_ver;
  98         /* Version 3 */
  99         __le32 hw_plat;
 100         /* Version 4 */
 101         __le32 plat_ver;
 102         /* Version 5 */
 103         __le32 accessory_chip;
 104         /* Version 6 */
 105         __le32 hw_plat_subtype;
 106         /* Version 7 */
 107         __le32 pmic_model;
 108         __le32 pmic_die_rev;
 109         /* Version 8 */
 110         __le32 pmic_model_1;
 111         __le32 pmic_die_rev_1;
 112         __le32 pmic_model_2;
 113         __le32 pmic_die_rev_2;
 114         /* Version 9 */
 115         __le32 foundry_id;
 116         /* Version 10 */
 117         __le32 serial_num;
 118         /* Version 11 */
 119         __le32 num_pmics;
 120         __le32 pmic_array_offset;
 121         /* Version 12 */
 122         __le32 chip_family;
 123         __le32 raw_device_family;
 124         __le32 raw_device_num;
 125         /* Version 13 */
 126         __le32 nproduct_id;
 127         char chip_id[SMEM_SOCINFO_CHIP_ID_LENGTH];
 128         /* Version 14 */
 129         __le32 num_clusters;
 130         __le32 ncluster_array_offset;
 131         __le32 num_defective_parts;
 132         __le32 ndefective_parts_array_offset;
 133         /* Version 15 */
 134         __le32 nmodem_supported;
 135 };
 136
 137 #ifdef CONFIG_DEBUG_FS
 138 struct socinfo_params {
 139         u32 raw_device_family;
 140         u32 hw_plat_subtype;
 141         u32 accessory_chip;
 142         u32 raw_device_num;
 143         u32 chip_family;
 144         u32 foundry_id;
 145         u32 plat_ver;
 146         u32 raw_ver;
 147         u32 hw_plat;
 148         u32 fmt;
 149         u32 nproduct_id;
 150         u32 num_clusters;
 151         u32 ncluster_array_offset;
 152         u32 num_defective_parts;
 153         u32 ndefective_parts_array_offset;
 154         u32 nmodem_supported;
 155 };
 156
 157 struct smem_image_version {
 158         char name[SMEM_IMAGE_VERSION_NAME_SIZE];
 159         char variant[SMEM_IMAGE_VERSION_VARIANT_SIZE];
 160         char pad;
 161         char oem[SMEM_IMAGE_VERSION_OEM_SIZE];
 162 };
 163 #endif /* CONFIG_DEBUG_FS */
 164
 165 struct qcom_socinfo {
 166         struct soc_device *soc_dev;
 167         struct soc_device_attribute attr;
 168 #ifdef CONFIG_DEBUG_FS
 169         struct dentry *dbg_root;
 170         struct socinfo_params info;
 171 #endif /* CONFIG_DEBUG_FS */
 172 };
 173
 174 struct soc_id {
 175         unsigned int id;
 176         const char *name;
 177 };
 178
 179 static const struct soc_id soc_id[] = {
 180         { 87, "MSM8960" },
 181         { 109, "APQ8064" },
 182         { 122, "MSM8660A" },
 183         { 123, "MSM8260A" },
 184         { 124, "APQ8060A" },
 185         { 126, "MSM8974" },
 186         { 130, "MPQ8064" },
 187         { 138, "MSM8960AB" },
 188         { 139, "APQ8060AB" },
 189         { 140, "MSM8260AB" },
 190         { 141, "MSM8660AB" },
 191         { 178, "APQ8084" },
 192         { 184, "APQ8074" },
 193         { 185, "MSM8274" },
 194         { 186, "MSM8674" },
 195         { 194, "MSM8974PRO" },
 196         { 206, "MSM8916" },
 197         { 208, "APQ8074-AA" },
 198         { 209, "APQ8074-AB" },
 199         { 210, "APQ8074PRO" },
 200         { 211, "MSM8274-AA" },
 201         { 212, "MSM8274-AB" },
 202         { 213, "MSM8274PRO" },
 203         { 214, "MSM8674-AA" },
 204         { 215, "MSM8674-AB" },
 205         { 216, "MSM8674PRO" },
 206         { 217, "MSM8974-AA" },
 207         { 218, "MSM8974-AB" },
 208         { 233, "MSM8936" },
 209         { 239, "MSM8939" },
 210         { 240, "APQ8036" },
 211         { 241, "APQ8039" },
 212         { 246, "MSM8996" },
 213         { 247, "APQ8016" },
 214         { 248, "MSM8216" },
 215         { 249, "MSM8116" },
 216         { 250, "MSM8616" },
 217         { 291, "APQ8096" },
 218         { 305, "MSM8996SG" },
 219         { 310, "MSM8996AU" },
 220         { 311, "APQ8096AU" },
 221         { 312, "APQ8096SG" },
 222         { 318, "SDM630" },
 223         { 321, "SDM845" },
 224         { 341, "SDA845" },
 225         { 356, "SM8250" },
 226 };
 227
 228 static const char *socinfo_machine(struct device *dev, unsigned int id)
 229 {
 230         int idx;
 231
 232         for (idx = 0; idx < ARRAY_SIZE(soc_id); idx++) {
 233                 if (soc_id[idx].id == id)
 234                         return soc_id[idx].name;
 235         }
 236
 237         return NULL;
 238 }
 239
 240 #ifdef CONFIG_DEBUG_FS
 241
 242 #define QCOM_OPEN(name, _func)                                          \
 243 static int qcom_open_##name(struct inode *inode, struct file *file)     \
 244 {                                                                       \
 245         return single_open(file, _func, inode->i_private);              \
 246 }                                                                       \
 247                                                                         \
 248 static const struct file_operations qcom_ ##name## _ops = {             \
 249         .open = qcom_open_##name,                                       \
 250         .read = seq_read,                                               \
 251         .llseek = seq_lseek,                                            \
 252         .release = single_release,                                      \
 253 }
 254
 255 #define DEBUGFS_ADD(info, name)                                         \
 256         debugfs_create_file(__stringify(name), 0400,                    \
 257                             qcom_socinfo->dbg_root,                     \
 258                             info, &qcom_ ##name## _ops)
 259
 260
 261 static int qcom_show_build_id(struct seq_file *seq, void *p)
 262 {
 263         struct socinfo *socinfo = seq->private;
 264
 265         seq_printf(seq, "%s\n", socinfo->build_id);
 266
 267         return 0;
 268 }
 269
 270 static int qcom_show_pmic_model(struct seq_file *seq, void *p)
 271 {
 272         struct socinfo *socinfo = seq->private;
 273         int model = SOCINFO_MINOR(le32_to_cpu(socinfo->pmic_model));
 274
 275         if (model < 0)
 276                 return -EINVAL;
 277
 278         if (model <= ARRAY_SIZE(pmic_models) && pmic_models[model])
 279                 seq_printf(seq, "%s\n", pmic_models[model]);
 280         else
 281                 seq_printf(seq, "unknown (%d)\n", model);
 282
 283         return 0;
 284 }
 285
 286 static int qcom_show_pmic_die_revision(struct seq_file *seq, void *p)
 287 {
 288         struct socinfo *socinfo = seq->private;
 289
 290         seq_printf(seq, "%u.%u\n",
 291                    SOCINFO_MAJOR(le32_to_cpu(socinfo->pmic_die_rev)),
 292                    SOCINFO_MINOR(le32_to_cpu(socinfo->pmic_die_rev)));
 293
 294         return 0;
 295 }
 296
 297 static int qcom_show_chip_id(struct seq_file *seq, void *p)
 298 {
 299         struct socinfo *socinfo = seq->private;
 300
 301         seq_printf(seq, "%s\n", socinfo->chip_id);
 302
 303         return 0;
 304 }
 305
 306 QCOM_OPEN(build_id, qcom_show_build_id);
 307 QCOM_OPEN(pmic_model, qcom_show_pmic_model);
 308 QCOM_OPEN(pmic_die_rev, qcom_show_pmic_die_revision);
 309 QCOM_OPEN(chip_id, qcom_show_chip_id);
 310
 311 #define DEFINE_IMAGE_OPS(type)                                  \
 312 static int show_image_##type(struct seq_file *seq, void *p)               \
 313 {                                                                 \
 314         struct smem_image_version *image_version = seq->private;  \
 315         seq_puts(seq, image_version->type);                       \
 316         seq_putc(seq, '\n');                                      \
 317         return 0;                                                 \
 318 }                                                                 \
 319 static int open_image_##type(struct inode *inode, struct file *file)      \
 320 {                                                                         \
 321         return single_open(file, show_image_##type, inode->i_private); \
 322 }                                                                         \
 323                                                                           \
 324 static const struct file_operations qcom_image_##type##_ops = {   \
 325         .open = open_image_##type,                                        \
 326         .read = seq_read,                                                 \
 327         .llseek = seq_lseek,                                              \
 328         .release = single_release,                                        \
 329 }
 330
 331 DEFINE_IMAGE_OPS(name);
 332 DEFINE_IMAGE_OPS(variant);
 333 DEFINE_IMAGE_OPS(oem);
 334
 335 static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo,
 336                                  struct socinfo *info)
 337 {
 338         struct smem_image_version *versions;
 339         struct dentry *dentry;
 340         size_t size;
 341         int i;
 342
 343         qcom_socinfo->dbg_root = debugfs_create_dir("qcom_socinfo", NULL);
 344
 345         qcom_socinfo->info.fmt = __le32_to_cpu(info->fmt);
 346
 347         debugfs_create_x32("info_fmt", 0400, qcom_socinfo->dbg_root,
 348                            &qcom_socinfo->info.fmt);
 349
 350         switch (qcom_socinfo->info.fmt) {
 351         case SOCINFO_VERSION(0, 15):
 352                 qcom_socinfo->info.nmodem_supported = __le32_to_cpu(info->nmodem_supported);
 353
 354                 debugfs_create_u32("nmodem_supported", 0400, qcom_socinfo->dbg_root,
 355                                    &qcom_socinfo->info.nmodem_supported);
 356                 fallthrough;
 357         case SOCINFO_VERSION(0, 14):
 358                 qcom_socinfo->info.num_clusters = __le32_to_cpu(info->num_clusters);
 359                 qcom_socinfo->info.ncluster_array_offset = __le32_to_cpu(info->ncluster_array_offset);
 360                 qcom_socinfo->info.num_defective_parts = __le32_to_cpu(info->num_defective_parts);
 361                 qcom_socinfo->info.ndefective_parts_array_offset = __le32_to_cpu(info->ndefective_parts_array_offset);
 362
 363                 debugfs_create_u32("num_clusters", 0400, qcom_socinfo->dbg_root,
 364                                    &qcom_socinfo->info.num_clusters);
 365                 debugfs_create_u32("ncluster_array_offset", 0400, qcom_socinfo->dbg_root,
 366                                    &qcom_socinfo->info.ncluster_array_offset);
 367                 debugfs_create_u32("num_defective_parts", 0400, qcom_socinfo->dbg_root,
 368                                    &qcom_socinfo->info.num_defective_parts);
 369                 debugfs_create_u32("ndefective_parts_array_offset", 0400, qcom_socinfo->dbg_root,
 370                                    &qcom_socinfo->info.ndefective_parts_array_offset);
 371                 fallthrough;
 372         case SOCINFO_VERSION(0, 13):
 373                 qcom_socinfo->info.nproduct_id = __le32_to_cpu(info->nproduct_id);
 374
 375                 debugfs_create_u32("nproduct_id", 0400, qcom_socinfo->dbg_root,
 376                                    &qcom_socinfo->info.nproduct_id);
 377                 DEBUGFS_ADD(info, chip_id);
 378                 fallthrough;
 379         case SOCINFO_VERSION(0, 12):
 380                 qcom_socinfo->info.chip_family =
 381                         __le32_to_cpu(info->chip_family);
 382                 qcom_socinfo->info.raw_device_family =
 383                         __le32_to_cpu(info->raw_device_family);
 384                 qcom_socinfo->info.raw_device_num =
 385                         __le32_to_cpu(info->raw_device_num);
 386
 387                 debugfs_create_x32("chip_family", 0400, qcom_socinfo->dbg_root,
 388                                    &qcom_socinfo->info.chip_family);
 389                 debugfs_create_x32("raw_device_family", 0400,
 390                                    qcom_socinfo->dbg_root,
 391                                    &qcom_socinfo->info.raw_device_family);
 392                 debugfs_create_x32("raw_device_number", 0400,
 393                                    qcom_socinfo->dbg_root,
 394                                    &qcom_socinfo->info.raw_device_num);
 395                 fallthrough;
 396         case SOCINFO_VERSION(0, 11):
 397         case SOCINFO_VERSION(0, 10):
 398         case SOCINFO_VERSION(0, 9):
 399                 qcom_socinfo->info.foundry_id = __le32_to_cpu(info->foundry_id);
 400
 401                 debugfs_create_u32("foundry_id", 0400, qcom_socinfo->dbg_root,
 402                                    &qcom_socinfo->info.foundry_id);
 403                 fallthrough;
 404         case SOCINFO_VERSION(0, 8):
 405         case SOCINFO_VERSION(0, 7):
 406                 DEBUGFS_ADD(info, pmic_model);
 407                 DEBUGFS_ADD(info, pmic_die_rev);
 408                 fallthrough;
 409         case SOCINFO_VERSION(0, 6):
 410                 qcom_socinfo->info.hw_plat_subtype =
 411                         __le32_to_cpu(info->hw_plat_subtype);
 412
 413                 debugfs_create_u32("hardware_platform_subtype", 0400,
 414                                    qcom_socinfo->dbg_root,
 415                                    &qcom_socinfo->info.hw_plat_subtype);
 416                 fallthrough;
 417         case SOCINFO_VERSION(0, 5):
 418                 qcom_socinfo->info.accessory_chip =
 419                         __le32_to_cpu(info->accessory_chip);
 420
 421                 debugfs_create_u32("accessory_chip", 0400,
 422                                    qcom_socinfo->dbg_root,
 423                                    &qcom_socinfo->info.accessory_chip);
 424                 fallthrough;
 425         case SOCINFO_VERSION(0, 4):
 426                 qcom_socinfo->info.plat_ver = __le32_to_cpu(info->plat_ver);
 427
 428                 debugfs_create_u32("platform_version", 0400,
 429                                    qcom_socinfo->dbg_root,
 430                                    &qcom_socinfo->info.plat_ver);
 431                 fallthrough;
 432         case SOCINFO_VERSION(0, 3):
 433                 qcom_socinfo->info.hw_plat = __le32_to_cpu(info->hw_plat);
 434
 435                 debugfs_create_u32("hardware_platform", 0400,
 436                                    qcom_socinfo->dbg_root,
 437                                    &qcom_socinfo->info.hw_plat);
 438                 fallthrough;
 439         case SOCINFO_VERSION(0, 2):
 440                 qcom_socinfo->info.raw_ver  = __le32_to_cpu(info->raw_ver);
 441
 442                 debugfs_create_u32("raw_version", 0400, qcom_socinfo->dbg_root,
 443                                    &qcom_socinfo->info.raw_ver);
 444                 fallthrough;
 445         case SOCINFO_VERSION(0, 1):
 446                 DEBUGFS_ADD(info, build_id);
 447                 break;
 448         }
 449
 450         versions = qcom_smem_get(QCOM_SMEM_HOST_ANY, SMEM_IMAGE_VERSION_TABLE,
 451                                  &size);
 452
 453         for (i = 0; i < ARRAY_SIZE(socinfo_image_names); i++) {
 454                 if (!socinfo_image_names[i])
 455                         continue;
 456
 457                 dentry = debugfs_create_dir(socinfo_image_names[i],
 458                                             qcom_socinfo->dbg_root);
 459                 debugfs_create_file("name", 0400, dentry, &versions[i],
 460                                     &qcom_image_name_ops);
 461                 debugfs_create_file("variant", 0400, dentry, &versions[i],
 462                                     &qcom_image_variant_ops);
 463                 debugfs_create_file("oem", 0400, dentry, &versions[i],
 464                                     &qcom_image_oem_ops);
 465         }
 466 }
 467
 468 static void socinfo_debugfs_exit(struct qcom_socinfo *qcom_socinfo)
 469 {
 470         debugfs_remove_recursive(qcom_socinfo->dbg_root);
 471 }
 472 #else
 473 static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo,
 474                                  struct socinfo *info)
 475 {
 476 }
 477 static void socinfo_debugfs_exit(struct qcom_socinfo *qcom_socinfo) {  }
 478 #endif /* CONFIG_DEBUG_FS */
 479
 480 static int qcom_socinfo_probe(struct platform_device *pdev)
 481 {
 482         struct qcom_socinfo *qs;
 483         struct socinfo *info;
 484         size_t item_size;
 485
 486         info = qcom_smem_get(QCOM_SMEM_HOST_ANY, SMEM_HW_SW_BUILD_ID,
 487                               &item_size);
 488         if (IS_ERR(info)) {
 489                 dev_err(&pdev->dev, "Couldn't find socinfo\n");
 490                 return PTR_ERR(info);
 491         }
 492
 493         qs = devm_kzalloc(&pdev->dev, sizeof(*qs), GFP_KERNEL);
 494         if (!qs)
 495                 return -ENOMEM;
 496
 497         qs->attr.family = "Snapdragon";
 498         qs->attr.machine = socinfo_machine(&pdev->dev,
 499                                            le32_to_cpu(info->id));
 500         qs->attr.soc_id = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%u",
 501                                          le32_to_cpu(info->id));
 502         qs->attr.revision = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%u.%u",
 503                                            SOCINFO_MAJOR(le32_to_cpu(info->ver)),
 504                                            SOCINFO_MINOR(le32_to_cpu(info->ver)));
 505         if (offsetof(struct socinfo, serial_num) <= item_size)
 506                 qs->attr.serial_number = devm_kasprintf(&pdev->dev, GFP_KERNEL,
 507                                                         "%u",
 508                                                         le32_to_cpu(info->serial_num));
 509
 510         qs->soc_dev = soc_device_register(&qs->attr);
 511         if (IS_ERR(qs->soc_dev))
 512                 return PTR_ERR(qs->soc_dev);
 513
 514         socinfo_debugfs_init(qs, info);
 515
 516         /* Feed the soc specific unique data into entropy pool */
 517         add_device_randomness(info, item_size);
 518
 519         platform_set_drvdata(pdev, qs->soc_dev);
 520
 521         return 0;
 522 }
 523
 524 static int qcom_socinfo_remove(struct platform_device *pdev)
 525 {
 526         struct qcom_socinfo *qs = platform_get_drvdata(pdev);
 527
 528         soc_device_unregister(qs->soc_dev);
 529
 530         socinfo_debugfs_exit(qs);
 531
 532         return 0;
 533 }
 534
 535 static struct platform_driver qcom_socinfo_driver = {
 536         .probe = qcom_socinfo_probe,
 537         .remove = qcom_socinfo_remove,
 538         .driver  = {
 539                 .name = "qcom-socinfo",
 540         },
 541 };
 542
 543 module_platform_driver(qcom_socinfo_driver);
 544
 545 MODULE_DESCRIPTION("Qualcomm SoCinfo driver");
 546 MODULE_LICENSE("GPL v2");
 547 MODULE_ALIAS("platform:qcom-socinfo");