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_0016");
  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_register_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         ret = ib_register_device(&shca->ib_device);
 321         if (ret)
 322                 ehca_err(&shca->ib_device,
 323                          "ib_register_device() failed ret=%x", ret);
 324
 325         return ret;
 326 }
 327
 328 static int ehca_create_aqp1(struct ehca_shca *shca, u32 port)
 329 {
 330         struct ehca_sport *sport = &shca->sport[port - 1];
 331         struct ib_cq *ibcq;
 332         struct ib_qp *ibqp;
 333         struct ib_qp_init_attr qp_init_attr;
 334         int ret;
 335
 336         if (sport->ibcq_aqp1) {
 337                 ehca_err(&shca->ib_device, "AQP1 CQ is already created.");
 338                 return -EPERM;
 339         }
 340
 341         ibcq = ib_create_cq(&shca->ib_device, NULL, NULL, (void*)(-1), 10);
 342         if (IS_ERR(ibcq)) {
 343                 ehca_err(&shca->ib_device, "Cannot create AQP1 CQ.");
 344                 return PTR_ERR(ibcq);
 345         }
 346         sport->ibcq_aqp1 = ibcq;
 347
 348         if (sport->ibqp_aqp1) {
 349                 ehca_err(&shca->ib_device, "AQP1 QP is already created.");
 350                 ret = -EPERM;
 351                 goto create_aqp1;
 352         }
 353
 354         memset(&qp_init_attr, 0, sizeof(struct ib_qp_init_attr));
 355         qp_init_attr.send_cq          = ibcq;
 356         qp_init_attr.recv_cq          = ibcq;
 357         qp_init_attr.sq_sig_type      = IB_SIGNAL_ALL_WR;
 358         qp_init_attr.cap.max_send_wr  = 100;
 359         qp_init_attr.cap.max_recv_wr  = 100;
 360         qp_init_attr.cap.max_send_sge = 2;
 361         qp_init_attr.cap.max_recv_sge = 1;
 362         qp_init_attr.qp_type          = IB_QPT_GSI;
 363         qp_init_attr.port_num         = port;
 364         qp_init_attr.qp_context       = NULL;
 365         qp_init_attr.event_handler    = NULL;
 366         qp_init_attr.srq              = NULL;
 367
 368         ibqp = ib_create_qp(&shca->pd->ib_pd, &qp_init_attr);
 369         if (IS_ERR(ibqp)) {
 370                 ehca_err(&shca->ib_device, "Cannot create AQP1 QP.");
 371                 ret = PTR_ERR(ibqp);
 372                 goto create_aqp1;
 373         }
 374         sport->ibqp_aqp1 = ibqp;
 375
 376         return 0;
 377
 378 create_aqp1:
 379         ib_destroy_cq(sport->ibcq_aqp1);
 380         return ret;
 381 }
 382
 383 static int ehca_destroy_aqp1(struct ehca_sport *sport)
 384 {
 385         int ret;
 386
 387         ret = ib_destroy_qp(sport->ibqp_aqp1);
 388         if (ret) {
 389                 ehca_gen_err("Cannot destroy AQP1 QP. ret=%x", ret);
 390                 return ret;
 391         }
 392
 393         ret = ib_destroy_cq(sport->ibcq_aqp1);
 394         if (ret)
 395                 ehca_gen_err("Cannot destroy AQP1 CQ. ret=%x", ret);
 396
 397         return ret;
 398 }
 399
 400 static ssize_t ehca_show_debug_level(struct device_driver *ddp, char *buf)
 401 {
 402         return  snprintf(buf, PAGE_SIZE, "%d\n",
 403                          ehca_debug_level);
 404 }
 405
 406 static ssize_t ehca_store_debug_level(struct device_driver *ddp,
 407                                       const char *buf, size_t count)
 408 {
 409         int value = (*buf) - '0';
 410         if (value >= 0 && value <= 9)
 411                 ehca_debug_level = value;
 412         return 1;
 413 }
 414
 415 DRIVER_ATTR(debug_level, S_IRUSR | S_IWUSR,
 416             ehca_show_debug_level, ehca_store_debug_level);
 417
 418 void ehca_create_driver_sysfs(struct ibmebus_driver *drv)
 419 {
 420         driver_create_file(&drv->driver, &driver_attr_debug_level);
 421 }
 422
 423 void ehca_remove_driver_sysfs(struct ibmebus_driver *drv)
 424 {
 425         driver_remove_file(&drv->driver, &driver_attr_debug_level);
 426 }
 427
 428 #define EHCA_RESOURCE_ATTR(name)                                           \
 429 static ssize_t  ehca_show_##name(struct device *dev,                       \
 430                                  struct device_attribute *attr,            \
 431                                  char *buf)                                \
 432 {                                                                          \
 433         struct ehca_shca *shca;                                            \
 434         struct hipz_query_hca *rblock;                                     \
 435         int data;                                                          \
 436                                                                            \
 437         shca = dev->driver_data;                                           \
 438                                                                            \
 439         rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);                      \
 440         if (!rblock) {                                                     \
 441                 dev_err(dev, "Can't allocate rblock memory.");             \
 442                 return 0;                                                  \
 443         }                                                                  \
 444                                                                            \
 445         if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) { \
 446                 dev_err(dev, "Can't query device properties");             \
 447                 kfree(rblock);                                             \
 448                 return 0;                                                  \
 449         }                                                                  \
 450                                                                            \
 451         data = rblock->name;                                               \
 452         kfree(rblock);                                                     \
 453                                                                            \
 454         if ((strcmp(#name, "num_ports") == 0) && (ehca_nr_ports == 1))     \
 455                 return snprintf(buf, 256, "1\n");                          \
 456         else                                                               \
 457                 return snprintf(buf, 256, "%d\n", data);                   \
 458                                                                            \
 459 }                                                                          \
 460 static DEVICE_ATTR(name, S_IRUGO, ehca_show_##name, NULL);
 461
 462 EHCA_RESOURCE_ATTR(num_ports);
 463 EHCA_RESOURCE_ATTR(hw_ver);
 464 EHCA_RESOURCE_ATTR(max_eq);
 465 EHCA_RESOURCE_ATTR(cur_eq);
 466 EHCA_RESOURCE_ATTR(max_cq);
 467 EHCA_RESOURCE_ATTR(cur_cq);
 468 EHCA_RESOURCE_ATTR(max_qp);
 469 EHCA_RESOURCE_ATTR(cur_qp);
 470 EHCA_RESOURCE_ATTR(max_mr);
 471 EHCA_RESOURCE_ATTR(cur_mr);
 472 EHCA_RESOURCE_ATTR(max_mw);
 473 EHCA_RESOURCE_ATTR(cur_mw);
 474 EHCA_RESOURCE_ATTR(max_pd);
 475 EHCA_RESOURCE_ATTR(max_ah);
 476
 477 static ssize_t ehca_show_adapter_handle(struct device *dev,
 478                                         struct device_attribute *attr,
 479                                         char *buf)
 480 {
 481         struct ehca_shca *shca = dev->driver_data;
 482
 483         return sprintf(buf, "%lx\n", shca->ipz_hca_handle.handle);
 484
 485 }
 486 static DEVICE_ATTR(adapter_handle, S_IRUGO, ehca_show_adapter_handle, NULL);
 487
 488
 489 void ehca_create_device_sysfs(struct ibmebus_dev *dev)
 490 {
 491         device_create_file(&dev->ofdev.dev, &dev_attr_adapter_handle);
 492         device_create_file(&dev->ofdev.dev, &dev_attr_num_ports);
 493         device_create_file(&dev->ofdev.dev, &dev_attr_hw_ver);
 494         device_create_file(&dev->ofdev.dev, &dev_attr_max_eq);
 495         device_create_file(&dev->ofdev.dev, &dev_attr_cur_eq);
 496         device_create_file(&dev->ofdev.dev, &dev_attr_max_cq);
 497         device_create_file(&dev->ofdev.dev, &dev_attr_cur_cq);
 498         device_create_file(&dev->ofdev.dev, &dev_attr_max_qp);
 499         device_create_file(&dev->ofdev.dev, &dev_attr_cur_qp);
 500         device_create_file(&dev->ofdev.dev, &dev_attr_max_mr);
 501         device_create_file(&dev->ofdev.dev, &dev_attr_cur_mr);
 502         device_create_file(&dev->ofdev.dev, &dev_attr_max_mw);
 503         device_create_file(&dev->ofdev.dev, &dev_attr_cur_mw);
 504         device_create_file(&dev->ofdev.dev, &dev_attr_max_pd);
 505         device_create_file(&dev->ofdev.dev, &dev_attr_max_ah);
 506 }
 507
 508 void ehca_remove_device_sysfs(struct ibmebus_dev *dev)
 509 {
 510         device_remove_file(&dev->ofdev.dev, &dev_attr_adapter_handle);
 511         device_remove_file(&dev->ofdev.dev, &dev_attr_num_ports);
 512         device_remove_file(&dev->ofdev.dev, &dev_attr_hw_ver);
 513         device_remove_file(&dev->ofdev.dev, &dev_attr_max_eq);
 514         device_remove_file(&dev->ofdev.dev, &dev_attr_cur_eq);
 515         device_remove_file(&dev->ofdev.dev, &dev_attr_max_cq);
 516         device_remove_file(&dev->ofdev.dev, &dev_attr_cur_cq);
 517         device_remove_file(&dev->ofdev.dev, &dev_attr_max_qp);
 518         device_remove_file(&dev->ofdev.dev, &dev_attr_cur_qp);
 519         device_remove_file(&dev->ofdev.dev, &dev_attr_max_mr);
 520         device_remove_file(&dev->ofdev.dev, &dev_attr_cur_mr);
 521         device_remove_file(&dev->ofdev.dev, &dev_attr_max_mw);
 522         device_remove_file(&dev->ofdev.dev, &dev_attr_cur_mw);
 523         device_remove_file(&dev->ofdev.dev, &dev_attr_max_pd);
 524         device_remove_file(&dev->ofdev.dev, &dev_attr_max_ah);
 525 }
 526
 527 static int __devinit ehca_probe(struct ibmebus_dev *dev,
 528                                 const struct of_device_id *id)
 529 {
 530         struct ehca_shca *shca;
 531         u64 *handle;
 532         struct ib_pd *ibpd;
 533         int ret;
 534
 535         handle = (u64 *)get_property(dev->ofdev.node, "ibm,hca-handle", NULL);
 536         if (!handle) {
 537                 ehca_gen_err("Cannot get eHCA handle for adapter: %s.",
 538                              dev->ofdev.node->full_name);
 539                 return -ENODEV;
 540         }
 541
 542         if (!(*handle)) {
 543                 ehca_gen_err("Wrong eHCA handle for adapter: %s.",
 544                              dev->ofdev.node->full_name);
 545                 return -ENODEV;
 546         }
 547
 548         shca = (struct ehca_shca *)ib_alloc_device(sizeof(*shca));
 549         if (!shca) {
 550                 ehca_gen_err("Cannot allocate shca memory.");
 551                 return -ENOMEM;
 552         }
 553
 554         shca->ibmebus_dev = dev;
 555         shca->ipz_hca_handle.handle = *handle;
 556         dev->ofdev.dev.driver_data = shca;
 557
 558         ret = ehca_sense_attributes(shca);
 559         if (ret < 0) {
 560                 ehca_gen_err("Cannot sense eHCA attributes.");
 561                 goto probe1;
 562         }
 563
 564         ret = ehca_register_device(shca);
 565         if (ret) {
 566                 ehca_gen_err("Cannot register Infiniband device");
 567                 goto probe1;
 568         }
 569
 570         /* create event queues */
 571         ret = ehca_create_eq(shca, &shca->eq, EHCA_EQ, 2048);
 572         if (ret) {
 573                 ehca_err(&shca->ib_device, "Cannot create EQ.");
 574                 goto probe2;
 575         }
 576
 577         ret = ehca_create_eq(shca, &shca->neq, EHCA_NEQ, 513);
 578         if (ret) {
 579                 ehca_err(&shca->ib_device, "Cannot create NEQ.");
 580                 goto probe3;
 581         }
 582
 583         /* create internal protection domain */
 584         ibpd = ehca_alloc_pd(&shca->ib_device, (void*)(-1), NULL);
 585         if (IS_ERR(ibpd)) {
 586                 ehca_err(&shca->ib_device, "Cannot create internal PD.");
 587                 ret = PTR_ERR(ibpd);
 588                 goto probe4;
 589         }
 590
 591         shca->pd = container_of(ibpd, struct ehca_pd, ib_pd);
 592         shca->pd->ib_pd.device = &shca->ib_device;
 593
 594         /* create internal max MR */
 595         ret = ehca_reg_internal_maxmr(shca, shca->pd, &shca->maxmr);
 596
 597         if (ret) {
 598                 ehca_err(&shca->ib_device, "Cannot create internal MR ret=%x",
 599                          ret);
 600                 goto probe5;
 601         }
 602
 603         /* create AQP1 for port 1 */
 604         if (ehca_open_aqp1 == 1) {
 605                 shca->sport[0].port_state = IB_PORT_DOWN;
 606                 ret = ehca_create_aqp1(shca, 1);
 607                 if (ret) {
 608                         ehca_err(&shca->ib_device,
 609                                  "Cannot create AQP1 for port 1.");
 610                         goto probe6;
 611                 }
 612         }
 613
 614         /* create AQP1 for port 2 */
 615         if ((ehca_open_aqp1 == 1) && (shca->num_ports == 2)) {
 616                 shca->sport[1].port_state = IB_PORT_DOWN;
 617                 ret = ehca_create_aqp1(shca, 2);
 618                 if (ret) {
 619                         ehca_err(&shca->ib_device,
 620                                  "Cannot create AQP1 for port 2.");
 621                         goto probe7;
 622                 }
 623         }
 624
 625         ehca_create_device_sysfs(dev);
 626
 627         spin_lock(&shca_list_lock);
 628         list_add(&shca->shca_list, &shca_list);
 629         spin_unlock(&shca_list_lock);
 630
 631         return 0;
 632
 633 probe7:
 634         ret = ehca_destroy_aqp1(&shca->sport[0]);
 635         if (ret)
 636                 ehca_err(&shca->ib_device,
 637                          "Cannot destroy AQP1 for port 1. ret=%x", ret);
 638
 639 probe6:
 640         ret = ehca_dereg_internal_maxmr(shca);
 641         if (ret)
 642                 ehca_err(&shca->ib_device,
 643                          "Cannot destroy internal MR. ret=%x", ret);
 644
 645 probe5:
 646         ret = ehca_dealloc_pd(&shca->pd->ib_pd);
 647         if (ret)
 648                 ehca_err(&shca->ib_device,
 649                          "Cannot destroy internal PD. ret=%x", ret);
 650
 651 probe4:
 652         ret = ehca_destroy_eq(shca, &shca->neq);
 653         if (ret)
 654                 ehca_err(&shca->ib_device,
 655                          "Cannot destroy NEQ. ret=%x", ret);
 656
 657 probe3:
 658         ret = ehca_destroy_eq(shca, &shca->eq);
 659         if (ret)
 660                 ehca_err(&shca->ib_device,
 661                          "Cannot destroy EQ. ret=%x", ret);
 662
 663 probe2:
 664         ib_unregister_device(&shca->ib_device);
 665
 666 probe1:
 667         ib_dealloc_device(&shca->ib_device);
 668
 669         return -EINVAL;
 670 }
 671
 672 static int __devexit ehca_remove(struct ibmebus_dev *dev)
 673 {
 674         struct ehca_shca *shca = dev->ofdev.dev.driver_data;
 675         int ret;
 676
 677         ehca_remove_device_sysfs(dev);
 678
 679         if (ehca_open_aqp1 == 1) {
 680                 int i;
 681                 for (i = 0; i < shca->num_ports; i++) {
 682                         ret = ehca_destroy_aqp1(&shca->sport[i]);
 683                         if (ret)
 684                                 ehca_err(&shca->ib_device,
 685                                          "Cannot destroy AQP1 for port %x "
 686                                          "ret=%x", ret, i);
 687                 }
 688         }
 689
 690         ib_unregister_device(&shca->ib_device);
 691
 692         ret = ehca_dereg_internal_maxmr(shca);
 693         if (ret)
 694                 ehca_err(&shca->ib_device,
 695                          "Cannot destroy internal MR. ret=%x", ret);
 696
 697         ret = ehca_dealloc_pd(&shca->pd->ib_pd);
 698         if (ret)
 699                 ehca_err(&shca->ib_device,
 700                          "Cannot destroy internal PD. ret=%x", ret);
 701
 702         ret = ehca_destroy_eq(shca, &shca->eq);
 703         if (ret)
 704                 ehca_err(&shca->ib_device, "Cannot destroy EQ. ret=%x", ret);
 705
 706         ret = ehca_destroy_eq(shca, &shca->neq);
 707         if (ret)
 708                 ehca_err(&shca->ib_device, "Canot destroy NEQ. ret=%x", ret);
 709
 710         ib_dealloc_device(&shca->ib_device);
 711
 712         spin_lock(&shca_list_lock);
 713         list_del(&shca->shca_list);
 714         spin_unlock(&shca_list_lock);
 715
 716         return ret;
 717 }
 718
 719 static struct of_device_id ehca_device_table[] =
 720 {
 721         {
 722                 .name       = "lhca",
 723                 .compatible = "IBM,lhca",
 724         },
 725         {},
 726 };
 727
 728 static struct ibmebus_driver ehca_driver = {
 729         .name     = "ehca",
 730         .id_table = ehca_device_table,
 731         .probe    = ehca_probe,
 732         .remove   = ehca_remove,
 733 };
 734
 735 void ehca_poll_eqs(unsigned long data)
 736 {
 737         struct ehca_shca *shca;
 738
 739         spin_lock(&shca_list_lock);
 740         list_for_each_entry(shca, &shca_list, shca_list) {
 741                 if (shca->eq.is_initialized)
 742                         ehca_tasklet_eq((unsigned long)(void*)shca);
 743         }
 744         mod_timer(&poll_eqs_timer, jiffies + HZ);
 745         spin_unlock(&shca_list_lock);
 746 }
 747
 748 int __init ehca_module_init(void)
 749 {
 750         int ret;
 751
 752         printk(KERN_INFO "eHCA Infiniband Device Driver "
 753                          "(Rel.: SVNEHCA_0016)\n");
 754         idr_init(&ehca_qp_idr);
 755         idr_init(&ehca_cq_idr);
 756         spin_lock_init(&ehca_qp_idr_lock);
 757         spin_lock_init(&ehca_cq_idr_lock);
 758
 759         INIT_LIST_HEAD(&shca_list);
 760         spin_lock_init(&shca_list_lock);
 761
 762         if ((ret = ehca_create_comp_pool())) {
 763                 ehca_gen_err("Cannot create comp pool.");
 764                 return ret;
 765         }
 766
 767         if ((ret = ehca_create_slab_caches())) {
 768                 ehca_gen_err("Cannot create SLAB caches");
 769                 ret = -ENOMEM;
 770                 goto module_init1;
 771         }
 772
 773         if ((ret = ibmebus_register_driver(&ehca_driver))) {
 774                 ehca_gen_err("Cannot register eHCA device driver");
 775                 ret = -EINVAL;
 776                 goto module_init2;
 777         }
 778
 779         ehca_create_driver_sysfs(&ehca_driver);
 780
 781         if (ehca_poll_all_eqs != 1) {
 782                 ehca_gen_err("WARNING!!!");
 783                 ehca_gen_err("It is possible to lose interrupts.");
 784         } else {
 785                 init_timer(&poll_eqs_timer);
 786                 poll_eqs_timer.function = ehca_poll_eqs;
 787                 poll_eqs_timer.expires = jiffies + HZ;
 788                 add_timer(&poll_eqs_timer);
 789         }
 790
 791         return 0;
 792
 793 module_init2:
 794         ehca_destroy_slab_caches();
 795
 796 module_init1:
 797         ehca_destroy_comp_pool();
 798         return ret;
 799 };
 800
 801 void __exit ehca_module_exit(void)
 802 {
 803         if (ehca_poll_all_eqs == 1)
 804                 del_timer_sync(&poll_eqs_timer);
 805
 806         ehca_remove_driver_sysfs(&ehca_driver);
 807         ibmebus_unregister_driver(&ehca_driver);
 808
 809         ehca_destroy_slab_caches();
 810
 811         ehca_destroy_comp_pool();
 812
 813         idr_destroy(&ehca_cq_idr);
 814         idr_destroy(&ehca_qp_idr);
 815 };
 816
 817 module_init(ehca_module_init);
 818 module_exit(ehca_module_exit);