drivers/infiniband/hw/hfi1/sysfs.c

   1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
   2 /*
   3  * Copyright(c) 2015-2017 Intel Corporation.
   4  */
   5
   6 #include <linux/ctype.h>
   7 #include <rdma/ib_sysfs.h>
   8
   9 #include "hfi.h"
  10 #include "mad.h"
  11 #include "trace.h"
  12
  13 static struct hfi1_pportdata *hfi1_get_pportdata_kobj(struct kobject *kobj)
  14 {
  15         u32 port_num;
  16         struct ib_device *ibdev = ib_port_sysfs_get_ibdev_kobj(kobj, &port_num);
  17         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
  18
  19         return &dd->pport[port_num - 1];
  20 }
  21
  22 /*
  23  * Start of per-port congestion control structures and support code
  24  */
  25
  26 /*
  27  * Congestion control table size followed by table entries
  28  */
  29 static ssize_t cc_table_bin_read(struct file *filp, struct kobject *kobj,
  30                                  struct bin_attribute *bin_attr, char *buf,
  31                                  loff_t pos, size_t count)
  32 {
  33         int ret;
  34         struct hfi1_pportdata *ppd = hfi1_get_pportdata_kobj(kobj);
  35         struct cc_state *cc_state;
  36
  37         ret = ppd->total_cct_entry * sizeof(struct ib_cc_table_entry_shadow)
  38                  + sizeof(__be16);
  39
  40         if (pos > ret)
  41                 return -EINVAL;
  42
  43         if (count > ret - pos)
  44                 count = ret - pos;
  45
  46         if (!count)
  47                 return count;
  48
  49         rcu_read_lock();
  50         cc_state = get_cc_state(ppd);
  51         if (!cc_state) {
  52                 rcu_read_unlock();
  53                 return -EINVAL;
  54         }
  55         memcpy(buf, (void *)&cc_state->cct + pos, count);
  56         rcu_read_unlock();
  57
  58         return count;
  59 }
  60 static BIN_ATTR_RO(cc_table_bin, PAGE_SIZE);
  61
  62 /*
  63  * Congestion settings: port control, control map and an array of 16
  64  * entries for the congestion entries - increase, timer, event log
  65  * trigger threshold and the minimum injection rate delay.
  66  */
  67 static ssize_t cc_setting_bin_read(struct file *filp, struct kobject *kobj,
  68                                    struct bin_attribute *bin_attr,
  69                                    char *buf, loff_t pos, size_t count)
  70 {
  71         struct hfi1_pportdata *ppd = hfi1_get_pportdata_kobj(kobj);
  72         int ret;
  73         struct cc_state *cc_state;
  74
  75         ret = sizeof(struct opa_congestion_setting_attr_shadow);
  76
  77         if (pos > ret)
  78                 return -EINVAL;
  79         if (count > ret - pos)
  80                 count = ret - pos;
  81
  82         if (!count)
  83                 return count;
  84
  85         rcu_read_lock();
  86         cc_state = get_cc_state(ppd);
  87         if (!cc_state) {
  88                 rcu_read_unlock();
  89                 return -EINVAL;
  90         }
  91         memcpy(buf, (void *)&cc_state->cong_setting + pos, count);
  92         rcu_read_unlock();
  93
  94         return count;
  95 }
  96 static BIN_ATTR_RO(cc_setting_bin, PAGE_SIZE);
  97
  98 static struct bin_attribute *port_cc_bin_attributes[] = {
  99         &bin_attr_cc_setting_bin,
 100         &bin_attr_cc_table_bin,
 101         NULL
 102 };
 103
 104 static ssize_t cc_prescan_show(struct ib_device *ibdev, u32 port_num,
 105                                struct ib_port_attribute *attr, char *buf)
 106 {
 107         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
 108         struct hfi1_pportdata *ppd = &dd->pport[port_num - 1];
 109
 110         return sysfs_emit(buf, "%s\n", ppd->cc_prescan ? "on" : "off");
 111 }
 112
 113 static ssize_t cc_prescan_store(struct ib_device *ibdev, u32 port_num,
 114                                 struct ib_port_attribute *attr, const char *buf,
 115                                 size_t count)
 116 {
 117         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
 118         struct hfi1_pportdata *ppd = &dd->pport[port_num - 1];
 119
 120         if (!memcmp(buf, "on", 2))
 121                 ppd->cc_prescan = true;
 122         else if (!memcmp(buf, "off", 3))
 123                 ppd->cc_prescan = false;
 124
 125         return count;
 126 }
 127 static IB_PORT_ATTR_ADMIN_RW(cc_prescan);
 128
 129 static struct attribute *port_cc_attributes[] = {
 130         &ib_port_attr_cc_prescan.attr,
 131         NULL
 132 };
 133
 134 static const struct attribute_group port_cc_group = {
 135         .name = "CCMgtA",
 136         .attrs = port_cc_attributes,
 137         .bin_attrs = port_cc_bin_attributes,
 138 };
 139
 140 /* Start sc2vl */
 141 struct hfi1_sc2vl_attr {
 142         struct ib_port_attribute attr;
 143         int sc;
 144 };
 145
 146 static ssize_t sc2vl_attr_show(struct ib_device *ibdev, u32 port_num,
 147                                struct ib_port_attribute *attr, char *buf)
 148 {
 149         struct hfi1_sc2vl_attr *sattr =
 150                 container_of(attr, struct hfi1_sc2vl_attr, attr);
 151         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
 152
 153         return sysfs_emit(buf, "%u\n", *((u8 *)dd->sc2vl + sattr->sc));
 154 }
 155
 156 #define HFI1_SC2VL_ATTR(N)                                                     \
 157         static struct hfi1_sc2vl_attr hfi1_sc2vl_attr_##N = {                  \
 158                 .attr = __ATTR(N, 0444, sc2vl_attr_show, NULL),                \
 159                 .sc = N,                                                       \
 160         }
 161
 162 HFI1_SC2VL_ATTR(0);
 163 HFI1_SC2VL_ATTR(1);
 164 HFI1_SC2VL_ATTR(2);
 165 HFI1_SC2VL_ATTR(3);
 166 HFI1_SC2VL_ATTR(4);
 167 HFI1_SC2VL_ATTR(5);
 168 HFI1_SC2VL_ATTR(6);
 169 HFI1_SC2VL_ATTR(7);
 170 HFI1_SC2VL_ATTR(8);
 171 HFI1_SC2VL_ATTR(9);
 172 HFI1_SC2VL_ATTR(10);
 173 HFI1_SC2VL_ATTR(11);
 174 HFI1_SC2VL_ATTR(12);
 175 HFI1_SC2VL_ATTR(13);
 176 HFI1_SC2VL_ATTR(14);
 177 HFI1_SC2VL_ATTR(15);
 178 HFI1_SC2VL_ATTR(16);
 179 HFI1_SC2VL_ATTR(17);
 180 HFI1_SC2VL_ATTR(18);
 181 HFI1_SC2VL_ATTR(19);
 182 HFI1_SC2VL_ATTR(20);
 183 HFI1_SC2VL_ATTR(21);
 184 HFI1_SC2VL_ATTR(22);
 185 HFI1_SC2VL_ATTR(23);
 186 HFI1_SC2VL_ATTR(24);
 187 HFI1_SC2VL_ATTR(25);
 188 HFI1_SC2VL_ATTR(26);
 189 HFI1_SC2VL_ATTR(27);
 190 HFI1_SC2VL_ATTR(28);
 191 HFI1_SC2VL_ATTR(29);
 192 HFI1_SC2VL_ATTR(30);
 193 HFI1_SC2VL_ATTR(31);
 194
 195 static struct attribute *port_sc2vl_attributes[] = {
 196         &hfi1_sc2vl_attr_0.attr.attr,
 197         &hfi1_sc2vl_attr_1.attr.attr,
 198         &hfi1_sc2vl_attr_2.attr.attr,
 199         &hfi1_sc2vl_attr_3.attr.attr,
 200         &hfi1_sc2vl_attr_4.attr.attr,
 201         &hfi1_sc2vl_attr_5.attr.attr,
 202         &hfi1_sc2vl_attr_6.attr.attr,
 203         &hfi1_sc2vl_attr_7.attr.attr,
 204         &hfi1_sc2vl_attr_8.attr.attr,
 205         &hfi1_sc2vl_attr_9.attr.attr,
 206         &hfi1_sc2vl_attr_10.attr.attr,
 207         &hfi1_sc2vl_attr_11.attr.attr,
 208         &hfi1_sc2vl_attr_12.attr.attr,
 209         &hfi1_sc2vl_attr_13.attr.attr,
 210         &hfi1_sc2vl_attr_14.attr.attr,
 211         &hfi1_sc2vl_attr_15.attr.attr,
 212         &hfi1_sc2vl_attr_16.attr.attr,
 213         &hfi1_sc2vl_attr_17.attr.attr,
 214         &hfi1_sc2vl_attr_18.attr.attr,
 215         &hfi1_sc2vl_attr_19.attr.attr,
 216         &hfi1_sc2vl_attr_20.attr.attr,
 217         &hfi1_sc2vl_attr_21.attr.attr,
 218         &hfi1_sc2vl_attr_22.attr.attr,
 219         &hfi1_sc2vl_attr_23.attr.attr,
 220         &hfi1_sc2vl_attr_24.attr.attr,
 221         &hfi1_sc2vl_attr_25.attr.attr,
 222         &hfi1_sc2vl_attr_26.attr.attr,
 223         &hfi1_sc2vl_attr_27.attr.attr,
 224         &hfi1_sc2vl_attr_28.attr.attr,
 225         &hfi1_sc2vl_attr_29.attr.attr,
 226         &hfi1_sc2vl_attr_30.attr.attr,
 227         &hfi1_sc2vl_attr_31.attr.attr,
 228         NULL
 229 };
 230
 231 static const struct attribute_group port_sc2vl_group = {
 232         .name = "sc2vl",
 233         .attrs = port_sc2vl_attributes,
 234 };
 235 /* End sc2vl */
 236
 237 /* Start sl2sc */
 238 struct hfi1_sl2sc_attr {
 239         struct ib_port_attribute attr;
 240         int sl;
 241 };
 242
 243 static ssize_t sl2sc_attr_show(struct ib_device *ibdev, u32 port_num,
 244                                struct ib_port_attribute *attr, char *buf)
 245 {
 246         struct hfi1_sl2sc_attr *sattr =
 247                 container_of(attr, struct hfi1_sl2sc_attr, attr);
 248         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
 249         struct hfi1_ibport *ibp = &dd->pport[port_num - 1].ibport_data;
 250
 251         return sysfs_emit(buf, "%u\n", ibp->sl_to_sc[sattr->sl]);
 252 }
 253
 254 #define HFI1_SL2SC_ATTR(N)                                                     \
 255         static struct hfi1_sl2sc_attr hfi1_sl2sc_attr_##N = {                  \
 256                 .attr = __ATTR(N, 0444, sl2sc_attr_show, NULL), .sl = N        \
 257         }
 258
 259 HFI1_SL2SC_ATTR(0);
 260 HFI1_SL2SC_ATTR(1);
 261 HFI1_SL2SC_ATTR(2);
 262 HFI1_SL2SC_ATTR(3);
 263 HFI1_SL2SC_ATTR(4);
 264 HFI1_SL2SC_ATTR(5);
 265 HFI1_SL2SC_ATTR(6);
 266 HFI1_SL2SC_ATTR(7);
 267 HFI1_SL2SC_ATTR(8);
 268 HFI1_SL2SC_ATTR(9);
 269 HFI1_SL2SC_ATTR(10);
 270 HFI1_SL2SC_ATTR(11);
 271 HFI1_SL2SC_ATTR(12);
 272 HFI1_SL2SC_ATTR(13);
 273 HFI1_SL2SC_ATTR(14);
 274 HFI1_SL2SC_ATTR(15);
 275 HFI1_SL2SC_ATTR(16);
 276 HFI1_SL2SC_ATTR(17);
 277 HFI1_SL2SC_ATTR(18);
 278 HFI1_SL2SC_ATTR(19);
 279 HFI1_SL2SC_ATTR(20);
 280 HFI1_SL2SC_ATTR(21);
 281 HFI1_SL2SC_ATTR(22);
 282 HFI1_SL2SC_ATTR(23);
 283 HFI1_SL2SC_ATTR(24);
 284 HFI1_SL2SC_ATTR(25);
 285 HFI1_SL2SC_ATTR(26);
 286 HFI1_SL2SC_ATTR(27);
 287 HFI1_SL2SC_ATTR(28);
 288 HFI1_SL2SC_ATTR(29);
 289 HFI1_SL2SC_ATTR(30);
 290 HFI1_SL2SC_ATTR(31);
 291
 292 static struct attribute *port_sl2sc_attributes[] = {
 293         &hfi1_sl2sc_attr_0.attr.attr,
 294         &hfi1_sl2sc_attr_1.attr.attr,
 295         &hfi1_sl2sc_attr_2.attr.attr,
 296         &hfi1_sl2sc_attr_3.attr.attr,
 297         &hfi1_sl2sc_attr_4.attr.attr,
 298         &hfi1_sl2sc_attr_5.attr.attr,
 299         &hfi1_sl2sc_attr_6.attr.attr,
 300         &hfi1_sl2sc_attr_7.attr.attr,
 301         &hfi1_sl2sc_attr_8.attr.attr,
 302         &hfi1_sl2sc_attr_9.attr.attr,
 303         &hfi1_sl2sc_attr_10.attr.attr,
 304         &hfi1_sl2sc_attr_11.attr.attr,
 305         &hfi1_sl2sc_attr_12.attr.attr,
 306         &hfi1_sl2sc_attr_13.attr.attr,
 307         &hfi1_sl2sc_attr_14.attr.attr,
 308         &hfi1_sl2sc_attr_15.attr.attr,
 309         &hfi1_sl2sc_attr_16.attr.attr,
 310         &hfi1_sl2sc_attr_17.attr.attr,
 311         &hfi1_sl2sc_attr_18.attr.attr,
 312         &hfi1_sl2sc_attr_19.attr.attr,
 313         &hfi1_sl2sc_attr_20.attr.attr,
 314         &hfi1_sl2sc_attr_21.attr.attr,
 315         &hfi1_sl2sc_attr_22.attr.attr,
 316         &hfi1_sl2sc_attr_23.attr.attr,
 317         &hfi1_sl2sc_attr_24.attr.attr,
 318         &hfi1_sl2sc_attr_25.attr.attr,
 319         &hfi1_sl2sc_attr_26.attr.attr,
 320         &hfi1_sl2sc_attr_27.attr.attr,
 321         &hfi1_sl2sc_attr_28.attr.attr,
 322         &hfi1_sl2sc_attr_29.attr.attr,
 323         &hfi1_sl2sc_attr_30.attr.attr,
 324         &hfi1_sl2sc_attr_31.attr.attr,
 325         NULL
 326 };
 327
 328 static const struct attribute_group port_sl2sc_group = {
 329         .name = "sl2sc",
 330         .attrs = port_sl2sc_attributes,
 331 };
 332
 333 /* End sl2sc */
 334
 335 /* Start vl2mtu */
 336
 337 struct hfi1_vl2mtu_attr {
 338         struct ib_port_attribute attr;
 339         int vl;
 340 };
 341
 342 static ssize_t vl2mtu_attr_show(struct ib_device *ibdev, u32 port_num,
 343                                 struct ib_port_attribute *attr, char *buf)
 344 {
 345         struct hfi1_vl2mtu_attr *vlattr =
 346                 container_of(attr, struct hfi1_vl2mtu_attr, attr);
 347         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
 348
 349         return sysfs_emit(buf, "%u\n", dd->vld[vlattr->vl].mtu);
 350 }
 351
 352 #define HFI1_VL2MTU_ATTR(N)                                                    \
 353         static struct hfi1_vl2mtu_attr hfi1_vl2mtu_attr_##N = {                \
 354                 .attr = __ATTR(N, 0444, vl2mtu_attr_show, NULL),               \
 355                 .vl = N,                                                       \
 356         }
 357
 358 HFI1_VL2MTU_ATTR(0);
 359 HFI1_VL2MTU_ATTR(1);
 360 HFI1_VL2MTU_ATTR(2);
 361 HFI1_VL2MTU_ATTR(3);
 362 HFI1_VL2MTU_ATTR(4);
 363 HFI1_VL2MTU_ATTR(5);
 364 HFI1_VL2MTU_ATTR(6);
 365 HFI1_VL2MTU_ATTR(7);
 366 HFI1_VL2MTU_ATTR(8);
 367 HFI1_VL2MTU_ATTR(9);
 368 HFI1_VL2MTU_ATTR(10);
 369 HFI1_VL2MTU_ATTR(11);
 370 HFI1_VL2MTU_ATTR(12);
 371 HFI1_VL2MTU_ATTR(13);
 372 HFI1_VL2MTU_ATTR(14);
 373 HFI1_VL2MTU_ATTR(15);
 374
 375 static struct attribute *port_vl2mtu_attributes[] = {
 376         &hfi1_vl2mtu_attr_0.attr.attr,
 377         &hfi1_vl2mtu_attr_1.attr.attr,
 378         &hfi1_vl2mtu_attr_2.attr.attr,
 379         &hfi1_vl2mtu_attr_3.attr.attr,
 380         &hfi1_vl2mtu_attr_4.attr.attr,
 381         &hfi1_vl2mtu_attr_5.attr.attr,
 382         &hfi1_vl2mtu_attr_6.attr.attr,
 383         &hfi1_vl2mtu_attr_7.attr.attr,
 384         &hfi1_vl2mtu_attr_8.attr.attr,
 385         &hfi1_vl2mtu_attr_9.attr.attr,
 386         &hfi1_vl2mtu_attr_10.attr.attr,
 387         &hfi1_vl2mtu_attr_11.attr.attr,
 388         &hfi1_vl2mtu_attr_12.attr.attr,
 389         &hfi1_vl2mtu_attr_13.attr.attr,
 390         &hfi1_vl2mtu_attr_14.attr.attr,
 391         &hfi1_vl2mtu_attr_15.attr.attr,
 392         NULL
 393 };
 394
 395 static const struct attribute_group port_vl2mtu_group = {
 396         .name = "vl2mtu",
 397         .attrs = port_vl2mtu_attributes,
 398 };
 399
 400 /* end of per-port file structures and support code */
 401
 402 /*
 403  * Start of per-unit (or driver, in some cases, but replicated
 404  * per unit) functions (these get a device *)
 405  */
 406 static ssize_t hw_rev_show(struct device *device, struct device_attribute *attr,
 407                            char *buf)
 408 {
 409         struct hfi1_ibdev *dev =
 410                 rdma_device_to_drv_device(device, struct hfi1_ibdev, rdi.ibdev);
 411
 412         return sysfs_emit(buf, "%x\n", dd_from_dev(dev)->minrev);
 413 }
 414 static DEVICE_ATTR_RO(hw_rev);
 415
 416 static ssize_t board_id_show(struct device *device,
 417                              struct device_attribute *attr, char *buf)
 418 {
 419         struct hfi1_ibdev *dev =
 420                 rdma_device_to_drv_device(device, struct hfi1_ibdev, rdi.ibdev);
 421         struct hfi1_devdata *dd = dd_from_dev(dev);
 422
 423         if (!dd->boardname)
 424                 return -EINVAL;
 425
 426         return sysfs_emit(buf, "%s\n", dd->boardname);
 427 }
 428 static DEVICE_ATTR_RO(board_id);
 429
 430 static ssize_t boardversion_show(struct device *device,
 431                                  struct device_attribute *attr, char *buf)
 432 {
 433         struct hfi1_ibdev *dev =
 434                 rdma_device_to_drv_device(device, struct hfi1_ibdev, rdi.ibdev);
 435         struct hfi1_devdata *dd = dd_from_dev(dev);
 436
 437         /* The string printed here is already newline-terminated. */
 438         return sysfs_emit(buf, "%s", dd->boardversion);
 439 }
 440 static DEVICE_ATTR_RO(boardversion);
 441
 442 static ssize_t nctxts_show(struct device *device,
 443                            struct device_attribute *attr, char *buf)
 444 {
 445         struct hfi1_ibdev *dev =
 446                 rdma_device_to_drv_device(device, struct hfi1_ibdev, rdi.ibdev);
 447         struct hfi1_devdata *dd = dd_from_dev(dev);
 448
 449         /*
 450          * Return the smaller of send and receive contexts.
 451          * Normally, user level applications would require both a send
 452          * and a receive context, so returning the smaller of the two counts
 453          * give a more accurate picture of total contexts available.
 454          */
 455         return sysfs_emit(buf, "%u\n",
 456                           min(dd->num_user_contexts,
 457                               (u32)dd->sc_sizes[SC_USER].count));
 458 }
 459 static DEVICE_ATTR_RO(nctxts);
 460
 461 static ssize_t nfreectxts_show(struct device *device,
 462                                struct device_attribute *attr, char *buf)
 463 {
 464         struct hfi1_ibdev *dev =
 465                 rdma_device_to_drv_device(device, struct hfi1_ibdev, rdi.ibdev);
 466         struct hfi1_devdata *dd = dd_from_dev(dev);
 467
 468         /* Return the number of free user ports (contexts) available. */
 469         return sysfs_emit(buf, "%u\n", dd->freectxts);
 470 }
 471 static DEVICE_ATTR_RO(nfreectxts);
 472
 473 static ssize_t serial_show(struct device *device,
 474                            struct device_attribute *attr, char *buf)
 475 {
 476         struct hfi1_ibdev *dev =
 477                 rdma_device_to_drv_device(device, struct hfi1_ibdev, rdi.ibdev);
 478         struct hfi1_devdata *dd = dd_from_dev(dev);
 479
 480         /* dd->serial is already newline terminated in chip.c */
 481         return sysfs_emit(buf, "%s", dd->serial);
 482 }
 483 static DEVICE_ATTR_RO(serial);
 484
 485 static ssize_t chip_reset_store(struct device *device,
 486                                 struct device_attribute *attr, const char *buf,
 487                                 size_t count)
 488 {
 489         struct hfi1_ibdev *dev =
 490                 rdma_device_to_drv_device(device, struct hfi1_ibdev, rdi.ibdev);
 491         struct hfi1_devdata *dd = dd_from_dev(dev);
 492         int ret;
 493
 494         if (count < 5 || memcmp(buf, "reset", 5) || !dd->diag_client) {
 495                 ret = -EINVAL;
 496                 goto bail;
 497         }
 498
 499         ret = hfi1_reset_device(dd->unit);
 500 bail:
 501         return ret < 0 ? ret : count;
 502 }
 503 static DEVICE_ATTR_WO(chip_reset);
 504
 505 /*
 506  * Convert the reported temperature from an integer (reported in
 507  * units of 0.25C) to a floating point number.
 508  */
 509 #define temp_d(t) ((t) >> 2)
 510 #define temp_f(t) (((t)&0x3) * 25u)
 511
 512 /*
 513  * Dump tempsense values, in decimal, to ease shell-scripts.
 514  */
 515 static ssize_t tempsense_show(struct device *device,
 516                               struct device_attribute *attr, char *buf)
 517 {
 518         struct hfi1_ibdev *dev =
 519                 rdma_device_to_drv_device(device, struct hfi1_ibdev, rdi.ibdev);
 520         struct hfi1_devdata *dd = dd_from_dev(dev);
 521         struct hfi1_temp temp;
 522         int ret;
 523
 524         ret = hfi1_tempsense_rd(dd, &temp);
 525         if (ret)
 526                 return ret;
 527
 528         return sysfs_emit(buf, "%u.%02u %u.%02u %u.%02u %u.%02u %u %u %u\n",
 529                           temp_d(temp.curr), temp_f(temp.curr),
 530                           temp_d(temp.lo_lim), temp_f(temp.lo_lim),
 531                           temp_d(temp.hi_lim), temp_f(temp.hi_lim),
 532                           temp_d(temp.crit_lim), temp_f(temp.crit_lim),
 533                           temp.triggers & 0x1,
 534                           temp.triggers & 0x2,
 535                           temp.triggers & 0x4);
 536 }
 537 static DEVICE_ATTR_RO(tempsense);
 538
 539 /*
 540  * end of per-unit (or driver, in some cases, but replicated
 541  * per unit) functions
 542  */
 543
 544 /* start of per-unit file structures and support code */
 545 static struct attribute *hfi1_attributes[] = {
 546         &dev_attr_hw_rev.attr,
 547         &dev_attr_board_id.attr,
 548         &dev_attr_nctxts.attr,
 549         &dev_attr_nfreectxts.attr,
 550         &dev_attr_serial.attr,
 551         &dev_attr_boardversion.attr,
 552         &dev_attr_tempsense.attr,
 553         &dev_attr_chip_reset.attr,
 554         NULL,
 555 };
 556
 557 const struct attribute_group ib_hfi1_attr_group = {
 558         .attrs = hfi1_attributes,
 559 };
 560
 561 const struct attribute_group *hfi1_attr_port_groups[] = {
 562         &port_cc_group,
 563         &port_sc2vl_group,
 564         &port_sl2sc_group,
 565         &port_vl2mtu_group,
 566         NULL,
 567 };
 568
 569 struct sde_attribute {
 570         struct attribute attr;
 571         ssize_t (*show)(struct sdma_engine *sde, char *buf);
 572         ssize_t (*store)(struct sdma_engine *sde, const char *buf, size_t cnt);
 573 };
 574
 575 static ssize_t sde_show(struct kobject *kobj, struct attribute *attr, char *buf)
 576 {
 577         struct sde_attribute *sde_attr =
 578                 container_of(attr, struct sde_attribute, attr);
 579         struct sdma_engine *sde =
 580                 container_of(kobj, struct sdma_engine, kobj);
 581
 582         if (!sde_attr->show)
 583                 return -EINVAL;
 584
 585         return sde_attr->show(sde, buf);
 586 }
 587
 588 static ssize_t sde_store(struct kobject *kobj, struct attribute *attr,
 589                          const char *buf, size_t count)
 590 {
 591         struct sde_attribute *sde_attr =
 592                 container_of(attr, struct sde_attribute, attr);
 593         struct sdma_engine *sde =
 594                 container_of(kobj, struct sdma_engine, kobj);
 595
 596         if (!capable(CAP_SYS_ADMIN))
 597                 return -EPERM;
 598
 599         if (!sde_attr->store)
 600                 return -EINVAL;
 601
 602         return sde_attr->store(sde, buf, count);
 603 }
 604
 605 static const struct sysfs_ops sde_sysfs_ops = {
 606         .show = sde_show,
 607         .store = sde_store,
 608 };
 609
 610 static struct kobj_type sde_ktype = {
 611         .sysfs_ops = &sde_sysfs_ops,
 612 };
 613
 614 #define SDE_ATTR(_name, _mode, _show, _store) \
 615         struct sde_attribute sde_attr_##_name = \
 616                 __ATTR(_name, _mode, _show, _store)
 617
 618 static ssize_t sde_show_cpu_to_sde_map(struct sdma_engine *sde, char *buf)
 619 {
 620         return sdma_get_cpu_to_sde_map(sde, buf);
 621 }
 622
 623 static ssize_t sde_store_cpu_to_sde_map(struct sdma_engine *sde,
 624                                         const char *buf, size_t count)
 625 {
 626         return sdma_set_cpu_to_sde_map(sde, buf, count);
 627 }
 628
 629 static ssize_t sde_show_vl(struct sdma_engine *sde, char *buf)
 630 {
 631         int vl;
 632
 633         vl = sdma_engine_get_vl(sde);
 634         if (vl < 0)
 635                 return vl;
 636
 637         return sysfs_emit(buf, "%d\n", vl);
 638 }
 639
 640 static SDE_ATTR(cpu_list, S_IWUSR | S_IRUGO,
 641                 sde_show_cpu_to_sde_map,
 642                 sde_store_cpu_to_sde_map);
 643 static SDE_ATTR(vl, S_IRUGO, sde_show_vl, NULL);
 644
 645 static struct sde_attribute *sde_attribs[] = {
 646         &sde_attr_cpu_list,
 647         &sde_attr_vl
 648 };
 649
 650 /*
 651  * Register and create our files in /sys/class/infiniband.
 652  */
 653 int hfi1_verbs_register_sysfs(struct hfi1_devdata *dd)
 654 {
 655         struct ib_device *dev = &dd->verbs_dev.rdi.ibdev;
 656         struct device *class_dev = &dev->dev;
 657         int i, j, ret;
 658
 659         for (i = 0; i < dd->num_sdma; i++) {
 660                 ret = kobject_init_and_add(&dd->per_sdma[i].kobj,
 661                                            &sde_ktype, &class_dev->kobj,
 662                                            "sdma%d", i);
 663                 if (ret)
 664                         goto bail;
 665
 666                 for (j = 0; j < ARRAY_SIZE(sde_attribs); j++) {
 667                         ret = sysfs_create_file(&dd->per_sdma[i].kobj,
 668                                                 &sde_attribs[j]->attr);
 669                         if (ret)
 670                                 goto bail;
 671                 }
 672         }
 673
 674         return 0;
 675 bail:
 676         /*
 677          * The function kobject_put() will call kobject_del() if the kobject
 678          * has been added successfully. The sysfs files created under the
 679          * kobject directory will also be removed during the process.
 680          */
 681         for (; i >= 0; i--)
 682                 kobject_put(&dd->per_sdma[i].kobj);
 683
 684         return ret;
 685 }
 686
 687 /*
 688  * Unregister and remove our files in /sys/class/infiniband.
 689  */
 690 void hfi1_verbs_unregister_sysfs(struct hfi1_devdata *dd)
 691 {
 692         int i;
 693
 694         /* Unwind operations in hfi1_verbs_register_sysfs() */
 695         for (i = 0; i < dd->num_sdma; i++)
 696                 kobject_put(&dd->per_sdma[i].kobj);
 697 }