drivers/infiniband/hw/ehca/ehca_main.c

   1 /*
   2  *  IBM eServer eHCA Infiniband device driver for Linux on POWER
   3  *
   4  *  module start stop, hca detection
   5  *
   6  *  Authors: Heiko J Schick <schickhj@de.ibm.com>
   7  *           Hoang-Nam Nguyen <hnguyen@de.ibm.com>
   8  *           Joachim Fenkes <fenkes@de.ibm.com>
   9  *
  10  *  Copyright (c) 2005 IBM Corporation
  11  *
  12  *  All rights reserved.
  13  *
  14  *  This source code is distributed under a dual license of GPL v2.0 and OpenIB
  15  *  BSD.
  16  *
  17  * OpenIB BSD License
  18  *
  19  * Redistribution and use in source and binary forms, with or without
  20  * modification, are permitted provided that the following conditions are met:
  21  *
  22  * Redistributions of source code must retain the above copyright notice, this
  23  * list of conditions and the following disclaimer.
  24  *
  25  * Redistributions in binary form must reproduce the above copyright notice,
  26  * this list of conditions and the following disclaimer in the documentation
  27  * and/or other materials
  28  * provided with the distribution.
  29  *
  30  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  31  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  32  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  33  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  34  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  35  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  36  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  37  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
  38  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  39  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  40  * POSSIBILITY OF SUCH DAMAGE.
  41  */
  42
  43 #include "ehca_classes.h"
  44 #include "ehca_iverbs.h"
  45 #include "ehca_mrmw.h"
  46 #include "ehca_tools.h"
  47 #include "hcp_if.h"
  48
  49 MODULE_LICENSE("Dual BSD/GPL");
  50 MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
  51 MODULE_DESCRIPTION("IBM eServer HCA InfiniBand Device Driver");
  52 MODULE_VERSION("SVNEHCA_0017");
  53
  54 int ehca_open_aqp1     = 0;
  55 int ehca_debug_level   = 0;
  56 int ehca_hw_level      = 0;
  57 int ehca_nr_ports      = 2;
  58 int ehca_use_hp_mr     = 0;
  59 int ehca_port_act_time = 30;
  60 int ehca_poll_all_eqs  = 1;
  61 int ehca_static_rate   = -1;
  62
  63 module_param_named(open_aqp1,     ehca_open_aqp1,     int, 0);
  64 module_param_named(debug_level,   ehca_debug_level,   int, 0);
  65 module_param_named(hw_level,      ehca_hw_level,      int, 0);
  66 module_param_named(nr_ports,      ehca_nr_ports,      int, 0);
  67 module_param_named(use_hp_mr,     ehca_use_hp_mr,     int, 0);
  68 module_param_named(port_act_time, ehca_port_act_time, int, 0);
  69 module_param_named(poll_all_eqs,  ehca_poll_all_eqs,  int, 0);
  70 module_param_named(static_rate,   ehca_static_rate,   int, 0);
  71
  72 MODULE_PARM_DESC(open_aqp1,
  73                  "AQP1 on startup (0: no (default), 1: yes)");
  74 MODULE_PARM_DESC(debug_level,
  75                  "debug level"
  76                  " (0: no debug traces (default), 1: with debug traces)");
  77 MODULE_PARM_DESC(hw_level,
  78                  "hardware level"
  79                  " (0: autosensing (default), 1: v. 0.20, 2: v. 0.21)");
  80 MODULE_PARM_DESC(nr_ports,
  81                  "number of connected ports (default: 2)");
  82 MODULE_PARM_DESC(use_hp_mr,
  83                  "high performance MRs (0: no (default), 1: yes)");
  84 MODULE_PARM_DESC(port_act_time,
  85                  "time to wait for port activation (default: 30 sec)");
  86 MODULE_PARM_DESC(poll_all_eqs,
  87                  "polls all event queues periodically"
  88                  " (0: no, 1: yes (default))");
  89 MODULE_PARM_DESC(static_rate,
  90                  "set permanent static rate (default: disabled)");
  91
  92 spinlock_t ehca_qp_idr_lock;
  93 spinlock_t ehca_cq_idr_lock;
  94 DEFINE_IDR(ehca_qp_idr);
  95 DEFINE_IDR(ehca_cq_idr);
  96
  97 static struct list_head shca_list; /* list of all registered ehcas */
  98 static spinlock_t shca_list_lock;
  99
 100 static struct timer_list poll_eqs_timer;
 101
 102 static int ehca_create_slab_caches(void)
 103 {
 104         int ret;
 105
 106         ret = ehca_init_pd_cache();
 107         if (ret) {
 108                 ehca_gen_err("Cannot create PD SLAB cache.");
 109                 return ret;
 110         }
 111
 112         ret = ehca_init_cq_cache();
 113         if (ret) {
 114                 ehca_gen_err("Cannot create CQ SLAB cache.");
 115                 goto create_slab_caches2;
 116         }
 117
 118         ret = ehca_init_qp_cache();
 119         if (ret) {
 120                 ehca_gen_err("Cannot create QP SLAB cache.");
 121                 goto create_slab_caches3;
 122         }
 123
 124         ret = ehca_init_av_cache();
 125         if (ret) {
 126                 ehca_gen_err("Cannot create AV SLAB cache.");
 127                 goto create_slab_caches4;
 128         }
 129
 130         ret = ehca_init_mrmw_cache();
 131         if (ret) {
 132                 ehca_gen_err("Cannot create MR&MW SLAB cache.");
 133                 goto create_slab_caches5;
 134         }
 135
 136         return 0;
 137
 138 create_slab_caches5:
 139         ehca_cleanup_av_cache();
 140
 141 create_slab_caches4:
 142         ehca_cleanup_qp_cache();
 143
 144 create_slab_caches3:
 145         ehca_cleanup_cq_cache();
 146
 147 create_slab_caches2:
 148         ehca_cleanup_pd_cache();
 149
 150         return ret;
 151 }
 152
 153 static void ehca_destroy_slab_caches(void)
 154 {
 155         ehca_cleanup_mrmw_cache();
 156         ehca_cleanup_av_cache();
 157         ehca_cleanup_qp_cache();
 158         ehca_cleanup_cq_cache();
 159         ehca_cleanup_pd_cache();
 160 }
 161
 162 #define EHCA_HCAAVER  EHCA_BMASK_IBM(32,39)
 163 #define EHCA_REVID    EHCA_BMASK_IBM(40,63)
 164
 165 int ehca_sense_attributes(struct ehca_shca *shca)
 166 {
 167         int ret = 0;
 168         u64 h_ret;
 169         struct hipz_query_hca *rblock;
 170
 171         rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
 172         if (!rblock) {
 173                 ehca_gen_err("Cannot allocate rblock memory.");
 174                 return -ENOMEM;
 175         }
 176
 177         h_ret = hipz_h_query_hca(shca->ipz_hca_handle, rblock);
 178         if (h_ret != H_SUCCESS) {
 179                 ehca_gen_err("Cannot query device properties. h_ret=%lx",
 180                              h_ret);
 181                 ret = -EPERM;
 182                 goto num_ports1;
 183         }
 184
 185         if (ehca_nr_ports == 1)
 186                 shca->num_ports = 1;
 187         else
 188                 shca->num_ports = (u8)rblock->num_ports;
 189
 190         ehca_gen_dbg(" ... found %x ports", rblock->num_ports);
 191
 192         if (ehca_hw_level == 0) {
 193                 u32 hcaaver;
 194                 u32 revid;
 195
 196                 hcaaver = EHCA_BMASK_GET(EHCA_HCAAVER, rblock->hw_ver);
 197                 revid   = EHCA_BMASK_GET(EHCA_REVID, rblock->hw_ver);
 198
 199                 ehca_gen_dbg(" ... hardware version=%x:%x", hcaaver, revid);
 200
 201                 if ((hcaaver == 1) && (revid == 0))
 202                         shca->hw_level = 0;
 203                 else if ((hcaaver == 1) && (revid == 1))
 204                         shca->hw_level = 1;
 205                 else if ((hcaaver == 1) && (revid == 2))
 206                         shca->hw_level = 2;
 207         }
 208         ehca_gen_dbg(" ... hardware level=%x", shca->hw_level);
 209
 210         shca->sport[0].rate = IB_RATE_30_GBPS;
 211         shca->sport[1].rate = IB_RATE_30_GBPS;
 212
 213 num_ports1:
 214         kfree(rblock);
 215         return ret;
 216 }
 217
 218 static int init_node_guid(struct ehca_shca *shca)
 219 {
 220         int ret = 0;
 221         struct hipz_query_hca *rblock;
 222
 223         rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
 224         if (!rblock) {
 225                 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
 226                 return -ENOMEM;
 227         }
 228
 229         if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) {
 230                 ehca_err(&shca->ib_device, "Can't query device properties");
 231                 ret = -EINVAL;
 232                 goto init_node_guid1;
 233         }
 234
 235         memcpy(&shca->ib_device.node_guid, &rblock->node_guid, sizeof(u64));
 236
 237 init_node_guid1:
 238         kfree(rblock);
 239         return ret;
 240 }
 241
 242 int ehca_init_device(struct ehca_shca *shca)
 243 {
 244         int ret;
 245
 246         ret = init_node_guid(shca);
 247         if (ret)
 248                 return ret;
 249
 250         strlcpy(shca->ib_device.name, "ehca%d", IB_DEVICE_NAME_MAX);
 251         shca->ib_device.owner               = THIS_MODULE;
 252
 253         shca->ib_device.uverbs_abi_ver      = 5;
 254         shca->ib_device.uverbs_cmd_mask     =
 255                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
 256                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
 257                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
 258                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
 259                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
 260                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
 261                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
 262                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
 263                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
 264                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
 265                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
 266                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
 267                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
 268                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
 269                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
 270                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST);
 271
 272         shca->ib_device.node_type           = RDMA_NODE_IB_CA;
 273         shca->ib_device.phys_port_cnt       = shca->num_ports;
 274         shca->ib_device.dma_device          = &shca->ibmebus_dev->ofdev.dev;
 275         shca->ib_device.query_device        = ehca_query_device;
 276         shca->ib_device.query_port          = ehca_query_port;
 277         shca->ib_device.query_gid           = ehca_query_gid;
 278         shca->ib_device.query_pkey          = ehca_query_pkey;
 279         /* shca->in_device.modify_device    = ehca_modify_device    */
 280         shca->ib_device.modify_port         = ehca_modify_port;
 281         shca->ib_device.alloc_ucontext      = ehca_alloc_ucontext;
 282         shca->ib_device.dealloc_ucontext    = ehca_dealloc_ucontext;
 283         shca->ib_device.alloc_pd            = ehca_alloc_pd;
 284         shca->ib_device.dealloc_pd          = ehca_dealloc_pd;
 285         shca->ib_device.create_ah           = ehca_create_ah;
 286         /* shca->ib_device.modify_ah        = ehca_modify_ah;       */
 287         shca->ib_device.query_ah            = ehca_query_ah;
 288         shca->ib_device.destroy_ah          = ehca_destroy_ah;
 289         shca->ib_device.create_qp           = ehca_create_qp;
 290         shca->ib_device.modify_qp           = ehca_modify_qp;
 291         shca->ib_device.query_qp            = ehca_query_qp;
 292         shca->ib_device.destroy_qp          = ehca_destroy_qp;
 293         shca->ib_device.post_send           = ehca_post_send;
 294         shca->ib_device.post_recv           = ehca_post_recv;
 295         shca->ib_device.create_cq           = ehca_create_cq;
 296         shca->ib_device.destroy_cq          = ehca_destroy_cq;
 297         shca->ib_device.resize_cq           = ehca_resize_cq;
 298         shca->ib_device.poll_cq             = ehca_poll_cq;
 299         /* shca->ib_device.peek_cq          = ehca_peek_cq;         */
 300         shca->ib_device.req_notify_cq       = ehca_req_notify_cq;
 301         /* shca->ib_device.req_ncomp_notif  = ehca_req_ncomp_notif; */
 302         shca->ib_device.get_dma_mr          = ehca_get_dma_mr;
 303         shca->ib_device.reg_phys_mr         = ehca_reg_phys_mr;
 304         shca->ib_device.reg_user_mr         = ehca_reg_user_mr;
 305         shca->ib_device.query_mr            = ehca_query_mr;
 306         shca->ib_device.dereg_mr            = ehca_dereg_mr;
 307         shca->ib_device.rereg_phys_mr       = ehca_rereg_phys_mr;
 308         shca->ib_device.alloc_mw            = ehca_alloc_mw;
 309         shca->ib_device.bind_mw             = ehca_bind_mw;
 310         shca->ib_device.dealloc_mw          = ehca_dealloc_mw;
 311         shca->ib_device.alloc_fmr           = ehca_alloc_fmr;
 312         shca->ib_device.map_phys_fmr        = ehca_map_phys_fmr;
 313         shca->ib_device.unmap_fmr           = ehca_unmap_fmr;
 314         shca->ib_device.dealloc_fmr         = ehca_dealloc_fmr;
 315         shca->ib_device.attach_mcast        = ehca_attach_mcast;
 316         shca->ib_device.detach_mcast        = ehca_detach_mcast;
 317         /* shca->ib_device.process_mad      = ehca_process_mad;     */
 318         shca->ib_device.mmap                = ehca_mmap;
 319
 320         return ret;
 321 }
 322
 323 static int ehca_create_aqp1(struct ehca_shca *shca, u32 port)
 324 {
 325         struct ehca_sport *sport = &shca->sport[port - 1];
 326         struct ib_cq *ibcq;
 327         struct ib_qp *ibqp;
 328         struct ib_qp_init_attr qp_init_attr;
 329         int ret;
 330
 331         if (sport->ibcq_aqp1) {
 332                 ehca_err(&shca->ib_device, "AQP1 CQ is already created.");
 333                 return -EPERM;
 334         }
 335
 336         ibcq = ib_create_cq(&shca->ib_device, NULL, NULL, (void*)(-1), 10);
 337         if (IS_ERR(ibcq)) {
 338                 ehca_err(&shca->ib_device, "Cannot create AQP1 CQ.");
 339                 return PTR_ERR(ibcq);
 340         }
 341         sport->ibcq_aqp1 = ibcq;
 342
 343         if (sport->ibqp_aqp1) {
 344                 ehca_err(&shca->ib_device, "AQP1 QP is already created.");
 345                 ret = -EPERM;
 346                 goto create_aqp1;
 347         }
 348
 349         memset(&qp_init_attr, 0, sizeof(struct ib_qp_init_attr));
 350         qp_init_attr.send_cq          = ibcq;
 351         qp_init_attr.recv_cq          = ibcq;
 352         qp_init_attr.sq_sig_type      = IB_SIGNAL_ALL_WR;
 353         qp_init_attr.cap.max_send_wr  = 100;
 354         qp_init_attr.cap.max_recv_wr  = 100;
 355         qp_init_attr.cap.max_send_sge = 2;
 356         qp_init_attr.cap.max_recv_sge = 1;
 357         qp_init_attr.qp_type          = IB_QPT_GSI;
 358         qp_init_attr.port_num         = port;
 359         qp_init_attr.qp_context       = NULL;
 360         qp_init_attr.event_handler    = NULL;
 361         qp_init_attr.srq              = NULL;
 362
 363         ibqp = ib_create_qp(&shca->pd->ib_pd, &qp_init_attr);
 364         if (IS_ERR(ibqp)) {
 365                 ehca_err(&shca->ib_device, "Cannot create AQP1 QP.");
 366                 ret = PTR_ERR(ibqp);
 367                 goto create_aqp1;
 368         }
 369         sport->ibqp_aqp1 = ibqp;
 370
 371         return 0;
 372
 373 create_aqp1:
 374         ib_destroy_cq(sport->ibcq_aqp1);
 375         return ret;
 376 }
 377
 378 static int ehca_destroy_aqp1(struct ehca_sport *sport)
 379 {
 380         int ret;
 381
 382         ret = ib_destroy_qp(sport->ibqp_aqp1);
 383         if (ret) {
 384                 ehca_gen_err("Cannot destroy AQP1 QP. ret=%x", ret);
 385                 return ret;
 386         }
 387
 388         ret = ib_destroy_cq(sport->ibcq_aqp1);
 389         if (ret)
 390                 ehca_gen_err("Cannot destroy AQP1 CQ. ret=%x", ret);
 391
 392         return ret;
 393 }
 394
 395 static ssize_t ehca_show_debug_level(struct device_driver *ddp, char *buf)
 396 {
 397         return  snprintf(buf, PAGE_SIZE, "%d\n",
 398                          ehca_debug_level);
 399 }
 400
 401 static ssize_t ehca_store_debug_level(struct device_driver *ddp,
 402                                       const char *buf, size_t count)
 403 {
 404         int value = (*buf) - '0';
 405         if (value >= 0 && value <= 9)
 406                 ehca_debug_level = value;
 407         return 1;
 408 }
 409
 410 DRIVER_ATTR(debug_level, S_IRUSR | S_IWUSR,
 411             ehca_show_debug_level, ehca_store_debug_level);
 412
 413 void ehca_create_driver_sysfs(struct ibmebus_driver *drv)
 414 {
 415         driver_create_file(&drv->driver, &driver_attr_debug_level);
 416 }
 417
 418 void ehca_remove_driver_sysfs(struct ibmebus_driver *drv)
 419 {
 420         driver_remove_file(&drv->driver, &driver_attr_debug_level);
 421 }
 422
 423 #define EHCA_RESOURCE_ATTR(name)                                           \
 424 static ssize_t  ehca_show_##name(struct device *dev,                       \
 425                                  struct device_attribute *attr,            \
 426                                  char *buf)                                \
 427 {                                                                          \
 428         struct ehca_shca *shca;                                            \
 429         struct hipz_query_hca *rblock;                                     \
 430         int data;                                                          \
 431                                                                            \
 432         shca = dev->driver_data;                                           \
 433                                                                            \
 434         rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);                      \
 435         if (!rblock) {                                                     \
 436                 dev_err(dev, "Can't allocate rblock memory.");             \
 437                 return 0;                                                  \
 438         }                                                                  \
 439                                                                            \
 440         if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) { \
 441                 dev_err(dev, "Can't query device properties");             \
 442                 kfree(rblock);                                             \
 443                 return 0;                                                  \
 444         }                                                                  \
 445                                                                            \
 446         data = rblock->name;                                               \
 447         kfree(rblock);                                                     \
 448                                                                            \
 449         if ((strcmp(#name, "num_ports") == 0) && (ehca_nr_ports == 1))     \
 450                 return snprintf(buf, 256, "1\n");                          \
 451         else                                                               \
 452                 return snprintf(buf, 256, "%d\n", data);                   \
 453                                                                            \
 454 }                                                                          \
 455 static DEVICE_ATTR(name, S_IRUGO, ehca_show_##name, NULL);
 456
 457 EHCA_RESOURCE_ATTR(num_ports);
 458 EHCA_RESOURCE_ATTR(hw_ver);
 459 EHCA_RESOURCE_ATTR(max_eq);
 460 EHCA_RESOURCE_ATTR(cur_eq);
 461 EHCA_RESOURCE_ATTR(max_cq);
 462 EHCA_RESOURCE_ATTR(cur_cq);
 463 EHCA_RESOURCE_ATTR(max_qp);
 464 EHCA_RESOURCE_ATTR(cur_qp);
 465 EHCA_RESOURCE_ATTR(max_mr);
 466 EHCA_RESOURCE_ATTR(cur_mr);
 467 EHCA_RESOURCE_ATTR(max_mw);
 468 EHCA_RESOURCE_ATTR(cur_mw);
 469 EHCA_RESOURCE_ATTR(max_pd);
 470 EHCA_RESOURCE_ATTR(max_ah);
 471
 472 static ssize_t ehca_show_adapter_handle(struct device *dev,
 473                                         struct device_attribute *attr,
 474                                         char *buf)
 475 {
 476         struct ehca_shca *shca = dev->driver_data;
 477
 478         return sprintf(buf, "%lx\n", shca->ipz_hca_handle.handle);
 479
 480 }
 481 static DEVICE_ATTR(adapter_handle, S_IRUGO, ehca_show_adapter_handle, NULL);
 482
 483
 484 void ehca_create_device_sysfs(struct ibmebus_dev *dev)
 485 {
 486         device_create_file(&dev->ofdev.dev, &dev_attr_adapter_handle);
 487         device_create_file(&dev->ofdev.dev, &dev_attr_num_ports);
 488         device_create_file(&dev->ofdev.dev, &dev_attr_hw_ver);
 489         device_create_file(&dev->ofdev.dev, &dev_attr_max_eq);
 490         device_create_file(&dev->ofdev.dev, &dev_attr_cur_eq);
 491         device_create_file(&dev->ofdev.dev, &dev_attr_max_cq);
 492         device_create_file(&dev->ofdev.dev, &dev_attr_cur_cq);
 493         device_create_file(&dev->ofdev.dev, &dev_attr_max_qp);
 494         device_create_file(&dev->ofdev.dev, &dev_attr_cur_qp);
 495         device_create_file(&dev->ofdev.dev, &dev_attr_max_mr);
 496         device_create_file(&dev->ofdev.dev, &dev_attr_cur_mr);
 497         device_create_file(&dev->ofdev.dev, &dev_attr_max_mw);
 498         device_create_file(&dev->ofdev.dev, &dev_attr_cur_mw);
 499         device_create_file(&dev->ofdev.dev, &dev_attr_max_pd);
 500         device_create_file(&dev->ofdev.dev, &dev_attr_max_ah);
 501 }
 502
 503 void ehca_remove_device_sysfs(struct ibmebus_dev *dev)
 504 {
 505         device_remove_file(&dev->ofdev.dev, &dev_attr_adapter_handle);
 506         device_remove_file(&dev->ofdev.dev, &dev_attr_num_ports);
 507         device_remove_file(&dev->ofdev.dev, &dev_attr_hw_ver);
 508         device_remove_file(&dev->ofdev.dev, &dev_attr_max_eq);
 509         device_remove_file(&dev->ofdev.dev, &dev_attr_cur_eq);
 510         device_remove_file(&dev->ofdev.dev, &dev_attr_max_cq);
 511         device_remove_file(&dev->ofdev.dev, &dev_attr_cur_cq);
 512         device_remove_file(&dev->ofdev.dev, &dev_attr_max_qp);
 513         device_remove_file(&dev->ofdev.dev, &dev_attr_cur_qp);
 514         device_remove_file(&dev->ofdev.dev, &dev_attr_max_mr);
 515         device_remove_file(&dev->ofdev.dev, &dev_attr_cur_mr);
 516         device_remove_file(&dev->ofdev.dev, &dev_attr_max_mw);
 517         device_remove_file(&dev->ofdev.dev, &dev_attr_cur_mw);
 518         device_remove_file(&dev->ofdev.dev, &dev_attr_max_pd);
 519         device_remove_file(&dev->ofdev.dev, &dev_attr_max_ah);
 520 }
 521
 522 static int __devinit ehca_probe(struct ibmebus_dev *dev,
 523                                 const struct of_device_id *id)
 524 {
 525         struct ehca_shca *shca;
 526         u64 *handle;
 527         struct ib_pd *ibpd;
 528         int ret;
 529
 530         handle = (u64 *)get_property(dev->ofdev.node, "ibm,hca-handle", NULL);
 531         if (!handle) {
 532                 ehca_gen_err("Cannot get eHCA handle for adapter: %s.",
 533                              dev->ofdev.node->full_name);
 534                 return -ENODEV;
 535         }
 536
 537         if (!(*handle)) {
 538                 ehca_gen_err("Wrong eHCA handle for adapter: %s.",
 539                              dev->ofdev.node->full_name);
 540                 return -ENODEV;
 541         }
 542
 543         shca = (struct ehca_shca *)ib_alloc_device(sizeof(*shca));
 544         if (!shca) {
 545                 ehca_gen_err("Cannot allocate shca memory.");
 546                 return -ENOMEM;
 547         }
 548
 549         shca->ibmebus_dev = dev;
 550         shca->ipz_hca_handle.handle = *handle;
 551         dev->ofdev.dev.driver_data = shca;
 552
 553         ret = ehca_sense_attributes(shca);
 554         if (ret < 0) {
 555                 ehca_gen_err("Cannot sense eHCA attributes.");
 556                 goto probe1;
 557         }
 558
 559         ret = ehca_init_device(shca);
 560         if (ret) {
 561                 ehca_gen_err("Cannot init ehca  device struct");
 562                 goto probe1;
 563         }
 564
 565         /* create event queues */
 566         ret = ehca_create_eq(shca, &shca->eq, EHCA_EQ, 2048);
 567         if (ret) {
 568                 ehca_err(&shca->ib_device, "Cannot create EQ.");
 569                 goto probe1;
 570         }
 571
 572         ret = ehca_create_eq(shca, &shca->neq, EHCA_NEQ, 513);
 573         if (ret) {
 574                 ehca_err(&shca->ib_device, "Cannot create NEQ.");
 575                 goto probe3;
 576         }
 577
 578         /* create internal protection domain */
 579         ibpd = ehca_alloc_pd(&shca->ib_device, (void*)(-1), NULL);
 580         if (IS_ERR(ibpd)) {
 581                 ehca_err(&shca->ib_device, "Cannot create internal PD.");
 582                 ret = PTR_ERR(ibpd);
 583                 goto probe4;
 584         }
 585
 586         shca->pd = container_of(ibpd, struct ehca_pd, ib_pd);
 587         shca->pd->ib_pd.device = &shca->ib_device;
 588
 589         /* create internal max MR */
 590         ret = ehca_reg_internal_maxmr(shca, shca->pd, &shca->maxmr);
 591
 592         if (ret) {
 593                 ehca_err(&shca->ib_device, "Cannot create internal MR ret=%x",
 594                          ret);
 595                 goto probe5;
 596         }
 597
 598         ret = ib_register_device(&shca->ib_device);
 599         if (ret) {
 600                 ehca_err(&shca->ib_device,
 601                          "ib_register_device() failed ret=%x", ret);
 602                 goto probe6;
 603         }
 604
 605         /* create AQP1 for port 1 */
 606         if (ehca_open_aqp1 == 1) {
 607                 shca->sport[0].port_state = IB_PORT_DOWN;
 608                 ret = ehca_create_aqp1(shca, 1);
 609                 if (ret) {
 610                         ehca_err(&shca->ib_device,
 611                                  "Cannot create AQP1 for port 1.");
 612                         goto probe7;
 613                 }
 614         }
 615
 616         /* create AQP1 for port 2 */
 617         if ((ehca_open_aqp1 == 1) && (shca->num_ports == 2)) {
 618                 shca->sport[1].port_state = IB_PORT_DOWN;
 619                 ret = ehca_create_aqp1(shca, 2);
 620                 if (ret) {
 621                         ehca_err(&shca->ib_device,
 622                                  "Cannot create AQP1 for port 2.");
 623                         goto probe8;
 624                 }
 625         }
 626
 627         ehca_create_device_sysfs(dev);
 628
 629         spin_lock(&shca_list_lock);
 630         list_add(&shca->shca_list, &shca_list);
 631         spin_unlock(&shca_list_lock);
 632
 633         return 0;
 634
 635 probe8:
 636         ret = ehca_destroy_aqp1(&shca->sport[0]);
 637         if (ret)
 638                 ehca_err(&shca->ib_device,
 639                          "Cannot destroy AQP1 for port 1. ret=%x", ret);
 640
 641 probe7:
 642         ib_unregister_device(&shca->ib_device);
 643
 644 probe6:
 645         ret = ehca_dereg_internal_maxmr(shca);
 646         if (ret)
 647                 ehca_err(&shca->ib_device,
 648                          "Cannot destroy internal MR. ret=%x", ret);
 649
 650 probe5:
 651         ret = ehca_dealloc_pd(&shca->pd->ib_pd);
 652         if (ret)
 653                 ehca_err(&shca->ib_device,
 654                          "Cannot destroy internal PD. ret=%x", ret);
 655
 656 probe4:
 657         ret = ehca_destroy_eq(shca, &shca->neq);
 658         if (ret)
 659                 ehca_err(&shca->ib_device,
 660                          "Cannot destroy NEQ. ret=%x", ret);
 661
 662 probe3:
 663         ret = ehca_destroy_eq(shca, &shca->eq);
 664         if (ret)
 665                 ehca_err(&shca->ib_device,
 666                          "Cannot destroy EQ. ret=%x", ret);
 667
 668 probe1:
 669         ib_dealloc_device(&shca->ib_device);
 670
 671         return -EINVAL;
 672 }
 673
 674 static int __devexit ehca_remove(struct ibmebus_dev *dev)
 675 {
 676         struct ehca_shca *shca = dev->ofdev.dev.driver_data;
 677         int ret;
 678
 679         ehca_remove_device_sysfs(dev);
 680
 681         if (ehca_open_aqp1 == 1) {
 682                 int i;
 683                 for (i = 0; i < shca->num_ports; i++) {
 684                         ret = ehca_destroy_aqp1(&shca->sport[i]);
 685                         if (ret)
 686                                 ehca_err(&shca->ib_device,
 687                                          "Cannot destroy AQP1 for port %x "
 688                                          "ret=%x", ret, i);
 689                 }
 690         }
 691
 692         ib_unregister_device(&shca->ib_device);
 693
 694         ret = ehca_dereg_internal_maxmr(shca);
 695         if (ret)
 696                 ehca_err(&shca->ib_device,
 697                          "Cannot destroy internal MR. ret=%x", ret);
 698
 699         ret = ehca_dealloc_pd(&shca->pd->ib_pd);
 700         if (ret)
 701                 ehca_err(&shca->ib_device,
 702                          "Cannot destroy internal PD. ret=%x", ret);
 703
 704         ret = ehca_destroy_eq(shca, &shca->eq);
 705         if (ret)
 706                 ehca_err(&shca->ib_device, "Cannot destroy EQ. ret=%x", ret);
 707
 708         ret = ehca_destroy_eq(shca, &shca->neq);
 709         if (ret)
 710                 ehca_err(&shca->ib_device, "Canot destroy NEQ. ret=%x", ret);
 711
 712         ib_dealloc_device(&shca->ib_device);
 713
 714         spin_lock(&shca_list_lock);
 715         list_del(&shca->shca_list);
 716         spin_unlock(&shca_list_lock);
 717
 718         return ret;
 719 }
 720
 721 static struct of_device_id ehca_device_table[] =
 722 {
 723         {
 724                 .name       = "lhca",
 725                 .compatible = "IBM,lhca",
 726         },
 727         {},
 728 };
 729
 730 static struct ibmebus_driver ehca_driver = {
 731         .name     = "ehca",
 732         .id_table = ehca_device_table,
 733         .probe    = ehca_probe,
 734         .remove   = ehca_remove,
 735 };
 736
 737 void ehca_poll_eqs(unsigned long data)
 738 {
 739         struct ehca_shca *shca;
 740
 741         spin_lock(&shca_list_lock);
 742         list_for_each_entry(shca, &shca_list, shca_list) {
 743                 if (shca->eq.is_initialized)
 744                         ehca_tasklet_eq((unsigned long)(void*)shca);
 745         }
 746         mod_timer(&poll_eqs_timer, jiffies + HZ);
 747         spin_unlock(&shca_list_lock);
 748 }
 749
 750 int __init ehca_module_init(void)
 751 {
 752         int ret;
 753
 754         printk(KERN_INFO "eHCA Infiniband Device Driver "
 755                          "(Rel.: SVNEHCA_0017)\n");
 756         idr_init(&ehca_qp_idr);
 757         idr_init(&ehca_cq_idr);
 758         spin_lock_init(&ehca_qp_idr_lock);
 759         spin_lock_init(&ehca_cq_idr_lock);
 760
 761         INIT_LIST_HEAD(&shca_list);
 762         spin_lock_init(&shca_list_lock);
 763
 764         if ((ret = ehca_create_comp_pool())) {
 765                 ehca_gen_err("Cannot create comp pool.");
 766                 return ret;
 767         }
 768
 769         if ((ret = ehca_create_slab_caches())) {
 770                 ehca_gen_err("Cannot create SLAB caches");
 771                 ret = -ENOMEM;
 772                 goto module_init1;
 773         }
 774
 775         if ((ret = ibmebus_register_driver(&ehca_driver))) {
 776                 ehca_gen_err("Cannot register eHCA device driver");
 777                 ret = -EINVAL;
 778                 goto module_init2;
 779         }
 780
 781         ehca_create_driver_sysfs(&ehca_driver);
 782
 783         if (ehca_poll_all_eqs != 1) {
 784                 ehca_gen_err("WARNING!!!");
 785                 ehca_gen_err("It is possible to lose interrupts.");
 786         } else {
 787                 init_timer(&poll_eqs_timer);
 788                 poll_eqs_timer.function = ehca_poll_eqs;
 789                 poll_eqs_timer.expires = jiffies + HZ;
 790                 add_timer(&poll_eqs_timer);
 791         }
 792
 793         return 0;
 794
 795 module_init2:
 796         ehca_destroy_slab_caches();
 797
 798 module_init1:
 799         ehca_destroy_comp_pool();
 800         return ret;
 801 };
 802
 803 void __exit ehca_module_exit(void)
 804 {
 805         if (ehca_poll_all_eqs == 1)
 806                 del_timer_sync(&poll_eqs_timer);
 807
 808         ehca_remove_driver_sysfs(&ehca_driver);
 809         ibmebus_unregister_driver(&ehca_driver);
 810
 811         ehca_destroy_slab_caches();
 812
 813         ehca_destroy_comp_pool();
 814
 815         idr_destroy(&ehca_cq_idr);
 816         idr_destroy(&ehca_qp_idr);
 817 };
 818
 819 module_init(ehca_module_init);
 820 module_exit(ehca_module_exit);