drivers/misc/habanalabs/common/sysfs.c

   1 // SPDX-License-Identifier: GPL-2.0
   2
   3 /*
   4  * Copyright 2016-2019 HabanaLabs, Ltd.
   5  * All Rights Reserved.
   6  */
   7
   8 #include "habanalabs.h"
   9
  10 #include <linux/pci.h>
  11
  12 long hl_get_frequency(struct hl_device *hdev, u32 pll_index, bool curr)
  13 {
  14         struct cpucp_packet pkt;
  15         u32 used_pll_idx;
  16         u64 result;
  17         int rc;
  18
  19         rc = get_used_pll_index(hdev, pll_index, &used_pll_idx);
  20         if (rc)
  21                 return rc;
  22
  23         memset(&pkt, 0, sizeof(pkt));
  24
  25         if (curr)
  26                 pkt.ctl = cpu_to_le32(CPUCP_PACKET_FREQUENCY_CURR_GET <<
  27                                                 CPUCP_PKT_CTL_OPCODE_SHIFT);
  28         else
  29                 pkt.ctl = cpu_to_le32(CPUCP_PACKET_FREQUENCY_GET <<
  30                                                 CPUCP_PKT_CTL_OPCODE_SHIFT);
  31         pkt.pll_index = cpu_to_le32((u32)used_pll_idx);
  32
  33         rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
  34                                                 0, &result);
  35
  36         if (rc) {
  37                 dev_err(hdev->dev,
  38                         "Failed to get frequency of PLL %d, error %d\n",
  39                         used_pll_idx, rc);
  40                 return rc;
  41         }
  42
  43         return (long) result;
  44 }
  45
  46 void hl_set_frequency(struct hl_device *hdev, u32 pll_index, u64 freq)
  47 {
  48         struct cpucp_packet pkt;
  49         u32 used_pll_idx;
  50         int rc;
  51
  52         rc = get_used_pll_index(hdev, pll_index, &used_pll_idx);
  53         if (rc)
  54                 return;
  55
  56         memset(&pkt, 0, sizeof(pkt));
  57
  58         pkt.ctl = cpu_to_le32(CPUCP_PACKET_FREQUENCY_SET <<
  59                                         CPUCP_PKT_CTL_OPCODE_SHIFT);
  60         pkt.pll_index = cpu_to_le32((u32)used_pll_idx);
  61         pkt.value = cpu_to_le64(freq);
  62
  63         rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
  64                                                 0, NULL);
  65
  66         if (rc)
  67                 dev_err(hdev->dev,
  68                         "Failed to set frequency to PLL %d, error %d\n",
  69                         used_pll_idx, rc);
  70 }
  71
  72 u64 hl_get_max_power(struct hl_device *hdev)
  73 {
  74         struct cpucp_packet pkt;
  75         u64 result;
  76         int rc;
  77
  78         memset(&pkt, 0, sizeof(pkt));
  79
  80         pkt.ctl = cpu_to_le32(CPUCP_PACKET_MAX_POWER_GET <<
  81                                 CPUCP_PKT_CTL_OPCODE_SHIFT);
  82
  83         rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
  84                                                 0, &result);
  85
  86         if (rc) {
  87                 dev_err(hdev->dev, "Failed to get max power, error %d\n", rc);
  88                 return (u64) rc;
  89         }
  90
  91         return result;
  92 }
  93
  94 void hl_set_max_power(struct hl_device *hdev)
  95 {
  96         struct cpucp_packet pkt;
  97         int rc;
  98
  99         memset(&pkt, 0, sizeof(pkt));
 100
 101         pkt.ctl = cpu_to_le32(CPUCP_PACKET_MAX_POWER_SET <<
 102                                 CPUCP_PKT_CTL_OPCODE_SHIFT);
 103         pkt.value = cpu_to_le64(hdev->max_power);
 104
 105         rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
 106                                                 0, NULL);
 107
 108         if (rc)
 109                 dev_err(hdev->dev, "Failed to set max power, error %d\n", rc);
 110 }
 111
 112 static ssize_t uboot_ver_show(struct device *dev, struct device_attribute *attr,
 113                                 char *buf)
 114 {
 115         struct hl_device *hdev = dev_get_drvdata(dev);
 116
 117         return sprintf(buf, "%s\n", hdev->asic_prop.uboot_ver);
 118 }
 119
 120 static ssize_t armcp_kernel_ver_show(struct device *dev,
 121                                 struct device_attribute *attr, char *buf)
 122 {
 123         struct hl_device *hdev = dev_get_drvdata(dev);
 124
 125         return sprintf(buf, "%s", hdev->asic_prop.cpucp_info.kernel_version);
 126 }
 127
 128 static ssize_t armcp_ver_show(struct device *dev, struct device_attribute *attr,
 129                                 char *buf)
 130 {
 131         struct hl_device *hdev = dev_get_drvdata(dev);
 132
 133         return sprintf(buf, "%s\n", hdev->asic_prop.cpucp_info.cpucp_version);
 134 }
 135
 136 static ssize_t cpld_ver_show(struct device *dev, struct device_attribute *attr,
 137                                 char *buf)
 138 {
 139         struct hl_device *hdev = dev_get_drvdata(dev);
 140
 141         return sprintf(buf, "0x%08x\n",
 142                         hdev->asic_prop.cpucp_info.cpld_version);
 143 }
 144
 145 static ssize_t cpucp_kernel_ver_show(struct device *dev,
 146                                 struct device_attribute *attr, char *buf)
 147 {
 148         struct hl_device *hdev = dev_get_drvdata(dev);
 149
 150         return sprintf(buf, "%s", hdev->asic_prop.cpucp_info.kernel_version);
 151 }
 152
 153 static ssize_t cpucp_ver_show(struct device *dev, struct device_attribute *attr,
 154                                 char *buf)
 155 {
 156         struct hl_device *hdev = dev_get_drvdata(dev);
 157
 158         return sprintf(buf, "%s\n", hdev->asic_prop.cpucp_info.cpucp_version);
 159 }
 160
 161 static ssize_t infineon_ver_show(struct device *dev,
 162                                 struct device_attribute *attr, char *buf)
 163 {
 164         struct hl_device *hdev = dev_get_drvdata(dev);
 165
 166         return sprintf(buf, "0x%04x\n",
 167                         hdev->asic_prop.cpucp_info.infineon_version);
 168 }
 169
 170 static ssize_t fuse_ver_show(struct device *dev, struct device_attribute *attr,
 171                                 char *buf)
 172 {
 173         struct hl_device *hdev = dev_get_drvdata(dev);
 174
 175         return sprintf(buf, "%s\n", hdev->asic_prop.cpucp_info.fuse_version);
 176 }
 177
 178 static ssize_t thermal_ver_show(struct device *dev,
 179                                 struct device_attribute *attr, char *buf)
 180 {
 181         struct hl_device *hdev = dev_get_drvdata(dev);
 182
 183         return sprintf(buf, "%s", hdev->asic_prop.cpucp_info.thermal_version);
 184 }
 185
 186 static ssize_t preboot_btl_ver_show(struct device *dev,
 187                                 struct device_attribute *attr, char *buf)
 188 {
 189         struct hl_device *hdev = dev_get_drvdata(dev);
 190
 191         return sprintf(buf, "%s\n", hdev->asic_prop.preboot_ver);
 192 }
 193
 194 static ssize_t soft_reset_store(struct device *dev,
 195                                 struct device_attribute *attr, const char *buf,
 196                                 size_t count)
 197 {
 198         struct hl_device *hdev = dev_get_drvdata(dev);
 199         long value;
 200         int rc;
 201
 202         rc = kstrtoul(buf, 0, &value);
 203
 204         if (rc) {
 205                 count = -EINVAL;
 206                 goto out;
 207         }
 208
 209         if (!hdev->allow_external_soft_reset) {
 210                 dev_err(hdev->dev, "Device does not support soft-reset\n");
 211                 goto out;
 212         }
 213
 214         dev_warn(hdev->dev, "Soft-Reset requested through sysfs\n");
 215
 216         hl_device_reset(hdev, 0);
 217
 218 out:
 219         return count;
 220 }
 221
 222 static ssize_t hard_reset_store(struct device *dev,
 223                                 struct device_attribute *attr,
 224                                 const char *buf, size_t count)
 225 {
 226         struct hl_device *hdev = dev_get_drvdata(dev);
 227         long value;
 228         int rc;
 229
 230         rc = kstrtoul(buf, 0, &value);
 231
 232         if (rc) {
 233                 count = -EINVAL;
 234                 goto out;
 235         }
 236
 237         dev_warn(hdev->dev, "Hard-Reset requested through sysfs\n");
 238
 239         hl_device_reset(hdev, HL_RESET_HARD);
 240
 241 out:
 242         return count;
 243 }
 244
 245 static ssize_t device_type_show(struct device *dev,
 246                 struct device_attribute *attr, char *buf)
 247 {
 248         struct hl_device *hdev = dev_get_drvdata(dev);
 249         char *str;
 250
 251         switch (hdev->asic_type) {
 252         case ASIC_GOYA:
 253                 str = "GOYA";
 254                 break;
 255         case ASIC_GAUDI:
 256                 str = "GAUDI";
 257                 break;
 258         case ASIC_GAUDI_SEC:
 259                 str = "GAUDI SEC";
 260                 break;
 261         default:
 262                 dev_err(hdev->dev, "Unrecognized ASIC type %d\n",
 263                                 hdev->asic_type);
 264                 return -EINVAL;
 265         }
 266
 267         return sprintf(buf, "%s\n", str);
 268 }
 269
 270 static ssize_t pci_addr_show(struct device *dev, struct device_attribute *attr,
 271                                 char *buf)
 272 {
 273         struct hl_device *hdev = dev_get_drvdata(dev);
 274
 275         return sprintf(buf, "%04x:%02x:%02x.%x\n",
 276                         pci_domain_nr(hdev->pdev->bus),
 277                         hdev->pdev->bus->number,
 278                         PCI_SLOT(hdev->pdev->devfn),
 279                         PCI_FUNC(hdev->pdev->devfn));
 280 }
 281
 282 static ssize_t status_show(struct device *dev, struct device_attribute *attr,
 283                                 char *buf)
 284 {
 285         struct hl_device *hdev = dev_get_drvdata(dev);
 286         char str[HL_STR_MAX];
 287
 288         strscpy(str, hdev->status[hl_device_status(hdev)], HL_STR_MAX);
 289
 290         /* use uppercase for backward compatibility */
 291         str[0] = 'A' + (str[0] - 'a');
 292
 293         return sprintf(buf, "%s\n", str);
 294 }
 295
 296 static ssize_t soft_reset_cnt_show(struct device *dev,
 297                 struct device_attribute *attr, char *buf)
 298 {
 299         struct hl_device *hdev = dev_get_drvdata(dev);
 300
 301         return sprintf(buf, "%d\n", hdev->soft_reset_cnt);
 302 }
 303
 304 static ssize_t hard_reset_cnt_show(struct device *dev,
 305                 struct device_attribute *attr, char *buf)
 306 {
 307         struct hl_device *hdev = dev_get_drvdata(dev);
 308
 309         return sprintf(buf, "%d\n", hdev->hard_reset_cnt);
 310 }
 311
 312 static ssize_t max_power_show(struct device *dev, struct device_attribute *attr,
 313                                 char *buf)
 314 {
 315         struct hl_device *hdev = dev_get_drvdata(dev);
 316         long val;
 317
 318         if (!hl_device_operational(hdev, NULL))
 319                 return -ENODEV;
 320
 321         val = hl_get_max_power(hdev);
 322
 323         return sprintf(buf, "%lu\n", val);
 324 }
 325
 326 static ssize_t max_power_store(struct device *dev,
 327                 struct device_attribute *attr, const char *buf, size_t count)
 328 {
 329         struct hl_device *hdev = dev_get_drvdata(dev);
 330         unsigned long value;
 331         int rc;
 332
 333         if (!hl_device_operational(hdev, NULL)) {
 334                 count = -ENODEV;
 335                 goto out;
 336         }
 337
 338         rc = kstrtoul(buf, 0, &value);
 339
 340         if (rc) {
 341                 count = -EINVAL;
 342                 goto out;
 343         }
 344
 345         hdev->max_power = value;
 346         hl_set_max_power(hdev);
 347
 348 out:
 349         return count;
 350 }
 351
 352 static ssize_t eeprom_read_handler(struct file *filp, struct kobject *kobj,
 353                         struct bin_attribute *attr, char *buf, loff_t offset,
 354                         size_t max_size)
 355 {
 356         struct device *dev = kobj_to_dev(kobj);
 357         struct hl_device *hdev = dev_get_drvdata(dev);
 358         char *data;
 359         int rc;
 360
 361         if (!hl_device_operational(hdev, NULL))
 362                 return -ENODEV;
 363
 364         if (!max_size)
 365                 return -EINVAL;
 366
 367         data = kzalloc(max_size, GFP_KERNEL);
 368         if (!data)
 369                 return -ENOMEM;
 370
 371         rc = hdev->asic_funcs->get_eeprom_data(hdev, data, max_size);
 372         if (rc)
 373                 goto out;
 374
 375         memcpy(buf, data, max_size);
 376
 377 out:
 378         kfree(data);
 379
 380         return max_size;
 381 }
 382
 383 static DEVICE_ATTR_RO(armcp_kernel_ver);
 384 static DEVICE_ATTR_RO(armcp_ver);
 385 static DEVICE_ATTR_RO(cpld_ver);
 386 static DEVICE_ATTR_RO(cpucp_kernel_ver);
 387 static DEVICE_ATTR_RO(cpucp_ver);
 388 static DEVICE_ATTR_RO(device_type);
 389 static DEVICE_ATTR_RO(fuse_ver);
 390 static DEVICE_ATTR_WO(hard_reset);
 391 static DEVICE_ATTR_RO(hard_reset_cnt);
 392 static DEVICE_ATTR_RO(infineon_ver);
 393 static DEVICE_ATTR_RW(max_power);
 394 static DEVICE_ATTR_RO(pci_addr);
 395 static DEVICE_ATTR_RO(preboot_btl_ver);
 396 static DEVICE_ATTR_WO(soft_reset);
 397 static DEVICE_ATTR_RO(soft_reset_cnt);
 398 static DEVICE_ATTR_RO(status);
 399 static DEVICE_ATTR_RO(thermal_ver);
 400 static DEVICE_ATTR_RO(uboot_ver);
 401
 402 static struct bin_attribute bin_attr_eeprom = {
 403         .attr = {.name = "eeprom", .mode = (0444)},
 404         .size = PAGE_SIZE,
 405         .read = eeprom_read_handler
 406 };
 407
 408 static struct attribute *hl_dev_attrs[] = {
 409         &dev_attr_armcp_kernel_ver.attr,
 410         &dev_attr_armcp_ver.attr,
 411         &dev_attr_cpld_ver.attr,
 412         &dev_attr_cpucp_kernel_ver.attr,
 413         &dev_attr_cpucp_ver.attr,
 414         &dev_attr_device_type.attr,
 415         &dev_attr_fuse_ver.attr,
 416         &dev_attr_hard_reset.attr,
 417         &dev_attr_hard_reset_cnt.attr,
 418         &dev_attr_infineon_ver.attr,
 419         &dev_attr_max_power.attr,
 420         &dev_attr_pci_addr.attr,
 421         &dev_attr_preboot_btl_ver.attr,
 422         &dev_attr_soft_reset.attr,
 423         &dev_attr_soft_reset_cnt.attr,
 424         &dev_attr_status.attr,
 425         &dev_attr_thermal_ver.attr,
 426         &dev_attr_uboot_ver.attr,
 427         NULL,
 428 };
 429
 430 static struct bin_attribute *hl_dev_bin_attrs[] = {
 431         &bin_attr_eeprom,
 432         NULL
 433 };
 434
 435 static struct attribute_group hl_dev_attr_group = {
 436         .attrs = hl_dev_attrs,
 437         .bin_attrs = hl_dev_bin_attrs,
 438 };
 439
 440 static struct attribute_group hl_dev_clks_attr_group;
 441
 442 static const struct attribute_group *hl_dev_attr_groups[] = {
 443         &hl_dev_attr_group,
 444         &hl_dev_clks_attr_group,
 445         NULL,
 446 };
 447
 448 int hl_sysfs_init(struct hl_device *hdev)
 449 {
 450         int rc;
 451
 452         if (hdev->asic_type == ASIC_GOYA)
 453                 hdev->pm_mng_profile = PM_AUTO;
 454         else
 455                 hdev->pm_mng_profile = PM_MANUAL;
 456
 457         hdev->max_power = hdev->asic_prop.max_power_default;
 458
 459         hdev->asic_funcs->add_device_attr(hdev, &hl_dev_clks_attr_group);
 460
 461         rc = device_add_groups(hdev->dev, hl_dev_attr_groups);
 462         if (rc) {
 463                 dev_err(hdev->dev,
 464                         "Failed to add groups to device, error %d\n", rc);
 465                 return rc;
 466         }
 467
 468         return 0;
 469 }
 470
 471 void hl_sysfs_fini(struct hl_device *hdev)
 472 {
 473         device_remove_groups(hdev->dev, hl_dev_attr_groups);
 474 }