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 #ifdef CONFIG_PPC_64K_PAGES
  44 #include <linux/slab.h>
  45 #endif
  46 #include "ehca_classes.h"
  47 #include "ehca_iverbs.h"
  48 #include "ehca_mrmw.h"
  49 #include "ehca_tools.h"
  50 #include "hcp_if.h"
  51
  52 MODULE_LICENSE("Dual BSD/GPL");
  53 MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
  54 MODULE_DESCRIPTION("IBM eServer HCA InfiniBand Device Driver");
  55 MODULE_VERSION("SVNEHCA_0019");
  56
  57 int ehca_open_aqp1     = 0;
  58 int ehca_debug_level   = 0;
  59 int ehca_hw_level      = 0;
  60 int ehca_nr_ports      = 2;
  61 int ehca_use_hp_mr     = 0;
  62 int ehca_port_act_time = 30;
  63 int ehca_poll_all_eqs  = 1;
  64 int ehca_static_rate   = -1;
  65
  66 module_param_named(open_aqp1,     ehca_open_aqp1,     int, 0);
  67 module_param_named(debug_level,   ehca_debug_level,   int, 0);
  68 module_param_named(hw_level,      ehca_hw_level,      int, 0);
  69 module_param_named(nr_ports,      ehca_nr_ports,      int, 0);
  70 module_param_named(use_hp_mr,     ehca_use_hp_mr,     int, 0);
  71 module_param_named(port_act_time, ehca_port_act_time, int, 0);
  72 module_param_named(poll_all_eqs,  ehca_poll_all_eqs,  int, 0);
  73 module_param_named(static_rate,   ehca_static_rate,   int, 0);
  74
  75 MODULE_PARM_DESC(open_aqp1,
  76                  "AQP1 on startup (0: no (default), 1: yes)");
  77 MODULE_PARM_DESC(debug_level,
  78                  "debug level"
  79                  " (0: no debug traces (default), 1: with debug traces)");
  80 MODULE_PARM_DESC(hw_level,
  81                  "hardware level"
  82                  " (0: autosensing (default), 1: v. 0.20, 2: v. 0.21)");
  83 MODULE_PARM_DESC(nr_ports,
  84                  "number of connected ports (default: 2)");
  85 MODULE_PARM_DESC(use_hp_mr,
  86                  "high performance MRs (0: no (default), 1: yes)");
  87 MODULE_PARM_DESC(port_act_time,
  88                  "time to wait for port activation (default: 30 sec)");
  89 MODULE_PARM_DESC(poll_all_eqs,
  90                  "polls all event queues periodically"
  91                  " (0: no, 1: yes (default))");
  92 MODULE_PARM_DESC(static_rate,
  93                  "set permanent static rate (default: disabled)");
  94
  95 spinlock_t ehca_qp_idr_lock;
  96 spinlock_t ehca_cq_idr_lock;
  97 DEFINE_IDR(ehca_qp_idr);
  98 DEFINE_IDR(ehca_cq_idr);
  99
 100
 101 static struct list_head shca_list; /* list of all registered ehcas */
 102 static spinlock_t shca_list_lock;
 103
 104 static struct timer_list poll_eqs_timer;
 105
 106 #ifdef CONFIG_PPC_64K_PAGES
 107 static struct kmem_cache *ctblk_cache = NULL;
 108
 109 void *ehca_alloc_fw_ctrlblock(gfp_t flags)
 110 {
 111         void *ret = kmem_cache_zalloc(ctblk_cache, flags);
 112         if (!ret)
 113                 ehca_gen_err("Out of memory for ctblk");
 114         return ret;
 115 }
 116
 117 void ehca_free_fw_ctrlblock(void *ptr)
 118 {
 119         if (ptr)
 120                 kmem_cache_free(ctblk_cache, ptr);
 121
 122 }
 123 #endif
 124
 125 static int ehca_create_slab_caches(void)
 126 {
 127         int ret;
 128
 129         ret = ehca_init_pd_cache();
 130         if (ret) {
 131                 ehca_gen_err("Cannot create PD SLAB cache.");
 132                 return ret;
 133         }
 134
 135         ret = ehca_init_cq_cache();
 136         if (ret) {
 137                 ehca_gen_err("Cannot create CQ SLAB cache.");
 138                 goto create_slab_caches2;
 139         }
 140
 141         ret = ehca_init_qp_cache();
 142         if (ret) {
 143                 ehca_gen_err("Cannot create QP SLAB cache.");
 144                 goto create_slab_caches3;
 145         }
 146
 147         ret = ehca_init_av_cache();
 148         if (ret) {
 149                 ehca_gen_err("Cannot create AV SLAB cache.");
 150                 goto create_slab_caches4;
 151         }
 152
 153         ret = ehca_init_mrmw_cache();
 154         if (ret) {
 155                 ehca_gen_err("Cannot create MR&MW SLAB cache.");
 156                 goto create_slab_caches5;
 157         }
 158
 159 #ifdef CONFIG_PPC_64K_PAGES
 160         ctblk_cache = kmem_cache_create("ehca_cache_ctblk",
 161                                         EHCA_PAGESIZE, H_CB_ALIGNMENT,
 162                                         SLAB_HWCACHE_ALIGN,
 163                                         NULL, NULL);
 164         if (!ctblk_cache) {
 165                 ehca_gen_err("Cannot create ctblk SLAB cache.");
 166                 ehca_cleanup_mrmw_cache();
 167                 goto create_slab_caches5;
 168         }
 169 #endif
 170         return 0;
 171
 172 create_slab_caches5:
 173         ehca_cleanup_av_cache();
 174
 175 create_slab_caches4:
 176         ehca_cleanup_qp_cache();
 177
 178 create_slab_caches3:
 179         ehca_cleanup_cq_cache();
 180
 181 create_slab_caches2:
 182         ehca_cleanup_pd_cache();
 183
 184         return ret;
 185 }
 186
 187 static void ehca_destroy_slab_caches(void)
 188 {
 189         ehca_cleanup_mrmw_cache();
 190         ehca_cleanup_av_cache();
 191         ehca_cleanup_qp_cache();
 192         ehca_cleanup_cq_cache();
 193         ehca_cleanup_pd_cache();
 194 #ifdef CONFIG_PPC_64K_PAGES
 195         if (ctblk_cache)
 196                 kmem_cache_destroy(ctblk_cache);
 197 #endif
 198 }
 199
 200 #define EHCA_HCAAVER  EHCA_BMASK_IBM(32,39)
 201 #define EHCA_REVID    EHCA_BMASK_IBM(40,63)
 202
 203 int ehca_sense_attributes(struct ehca_shca *shca)
 204 {
 205         int ret = 0;
 206         u64 h_ret;
 207         struct hipz_query_hca *rblock;
 208
 209         rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
 210         if (!rblock) {
 211                 ehca_gen_err("Cannot allocate rblock memory.");
 212                 return -ENOMEM;
 213         }
 214
 215         h_ret = hipz_h_query_hca(shca->ipz_hca_handle, rblock);
 216         if (h_ret != H_SUCCESS) {
 217                 ehca_gen_err("Cannot query device properties. h_ret=%lx",
 218                              h_ret);
 219                 ret = -EPERM;
 220                 goto num_ports1;
 221         }
 222
 223         if (ehca_nr_ports == 1)
 224                 shca->num_ports = 1;
 225         else
 226                 shca->num_ports = (u8)rblock->num_ports;
 227
 228         ehca_gen_dbg(" ... found %x ports", rblock->num_ports);
 229
 230         if (ehca_hw_level == 0) {
 231                 u32 hcaaver;
 232                 u32 revid;
 233
 234                 hcaaver = EHCA_BMASK_GET(EHCA_HCAAVER, rblock->hw_ver);
 235                 revid   = EHCA_BMASK_GET(EHCA_REVID, rblock->hw_ver);
 236
 237                 ehca_gen_dbg(" ... hardware version=%x:%x", hcaaver, revid);
 238
 239                 if ((hcaaver == 1) && (revid == 0))
 240                         shca->hw_level = 0;
 241                 else if ((hcaaver == 1) && (revid == 1))
 242                         shca->hw_level = 1;
 243                 else if ((hcaaver == 1) && (revid == 2))
 244                         shca->hw_level = 2;
 245         }
 246         ehca_gen_dbg(" ... hardware level=%x", shca->hw_level);
 247
 248         shca->sport[0].rate = IB_RATE_30_GBPS;
 249         shca->sport[1].rate = IB_RATE_30_GBPS;
 250
 251 num_ports1:
 252         ehca_free_fw_ctrlblock(rblock);
 253         return ret;
 254 }
 255
 256 static int init_node_guid(struct ehca_shca *shca)
 257 {
 258         int ret = 0;
 259         struct hipz_query_hca *rblock;
 260
 261         rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
 262         if (!rblock) {
 263                 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
 264                 return -ENOMEM;
 265         }
 266
 267         if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) {
 268                 ehca_err(&shca->ib_device, "Can't query device properties");
 269                 ret = -EINVAL;
 270                 goto init_node_guid1;
 271         }
 272
 273         memcpy(&shca->ib_device.node_guid, &rblock->node_guid, sizeof(u64));
 274
 275 init_node_guid1:
 276         ehca_free_fw_ctrlblock(rblock);
 277         return ret;
 278 }
 279
 280 int ehca_init_device(struct ehca_shca *shca)
 281 {
 282         int ret;
 283
 284         ret = init_node_guid(shca);
 285         if (ret)
 286                 return ret;
 287
 288         strlcpy(shca->ib_device.name, "ehca%d", IB_DEVICE_NAME_MAX);
 289         shca->ib_device.owner               = THIS_MODULE;
 290
 291         shca->ib_device.uverbs_abi_ver      = 5;
 292         shca->ib_device.uverbs_cmd_mask     =
 293                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
 294                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
 295                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
 296                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
 297                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
 298                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
 299                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
 300                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
 301                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
 302                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
 303                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
 304                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
 305                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
 306                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
 307                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
 308                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST);
 309
 310         shca->ib_device.node_type           = RDMA_NODE_IB_CA;
 311         shca->ib_device.phys_port_cnt       = shca->num_ports;
 312         shca->ib_device.dma_device          = &shca->ibmebus_dev->ofdev.dev;
 313         shca->ib_device.query_device        = ehca_query_device;
 314         shca->ib_device.query_port          = ehca_query_port;
 315         shca->ib_device.query_gid           = ehca_query_gid;
 316         shca->ib_device.query_pkey          = ehca_query_pkey;
 317         /* shca->in_device.modify_device    = ehca_modify_device    */
 318         shca->ib_device.modify_port         = ehca_modify_port;
 319         shca->ib_device.alloc_ucontext      = ehca_alloc_ucontext;
 320         shca->ib_device.dealloc_ucontext    = ehca_dealloc_ucontext;
 321         shca->ib_device.alloc_pd            = ehca_alloc_pd;
 322         shca->ib_device.dealloc_pd          = ehca_dealloc_pd;
 323         shca->ib_device.create_ah           = ehca_create_ah;
 324         /* shca->ib_device.modify_ah        = ehca_modify_ah;       */
 325         shca->ib_device.query_ah            = ehca_query_ah;
 326         shca->ib_device.destroy_ah          = ehca_destroy_ah;
 327         shca->ib_device.create_qp           = ehca_create_qp;
 328         shca->ib_device.modify_qp           = ehca_modify_qp;
 329         shca->ib_device.query_qp            = ehca_query_qp;
 330         shca->ib_device.destroy_qp          = ehca_destroy_qp;
 331         shca->ib_device.post_send           = ehca_post_send;
 332         shca->ib_device.post_recv           = ehca_post_recv;
 333         shca->ib_device.create_cq           = ehca_create_cq;
 334         shca->ib_device.destroy_cq          = ehca_destroy_cq;
 335         shca->ib_device.resize_cq           = ehca_resize_cq;
 336         shca->ib_device.poll_cq             = ehca_poll_cq;
 337         /* shca->ib_device.peek_cq          = ehca_peek_cq;         */
 338         shca->ib_device.req_notify_cq       = ehca_req_notify_cq;
 339         /* shca->ib_device.req_ncomp_notif  = ehca_req_ncomp_notif; */
 340         shca->ib_device.get_dma_mr          = ehca_get_dma_mr;
 341         shca->ib_device.reg_phys_mr         = ehca_reg_phys_mr;
 342         shca->ib_device.reg_user_mr         = ehca_reg_user_mr;
 343         shca->ib_device.query_mr            = ehca_query_mr;
 344         shca->ib_device.dereg_mr            = ehca_dereg_mr;
 345         shca->ib_device.rereg_phys_mr       = ehca_rereg_phys_mr;
 346         shca->ib_device.alloc_mw            = ehca_alloc_mw;
 347         shca->ib_device.bind_mw             = ehca_bind_mw;
 348         shca->ib_device.dealloc_mw          = ehca_dealloc_mw;
 349         shca->ib_device.alloc_fmr           = ehca_alloc_fmr;
 350         shca->ib_device.map_phys_fmr        = ehca_map_phys_fmr;
 351         shca->ib_device.unmap_fmr           = ehca_unmap_fmr;
 352         shca->ib_device.dealloc_fmr         = ehca_dealloc_fmr;
 353         shca->ib_device.attach_mcast        = ehca_attach_mcast;
 354         shca->ib_device.detach_mcast        = ehca_detach_mcast;
 355         /* shca->ib_device.process_mad      = ehca_process_mad;     */
 356         shca->ib_device.mmap                = ehca_mmap;
 357
 358         return ret;
 359 }
 360
 361 static int ehca_create_aqp1(struct ehca_shca *shca, u32 port)
 362 {
 363         struct ehca_sport *sport = &shca->sport[port - 1];
 364         struct ib_cq *ibcq;
 365         struct ib_qp *ibqp;
 366         struct ib_qp_init_attr qp_init_attr;
 367         int ret;
 368
 369         if (sport->ibcq_aqp1) {
 370                 ehca_err(&shca->ib_device, "AQP1 CQ is already created.");
 371                 return -EPERM;
 372         }
 373
 374         ibcq = ib_create_cq(&shca->ib_device, NULL, NULL, (void*)(-1), 10);
 375         if (IS_ERR(ibcq)) {
 376                 ehca_err(&shca->ib_device, "Cannot create AQP1 CQ.");
 377                 return PTR_ERR(ibcq);
 378         }
 379         sport->ibcq_aqp1 = ibcq;
 380
 381         if (sport->ibqp_aqp1) {
 382                 ehca_err(&shca->ib_device, "AQP1 QP is already created.");
 383                 ret = -EPERM;
 384                 goto create_aqp1;
 385         }
 386
 387         memset(&qp_init_attr, 0, sizeof(struct ib_qp_init_attr));
 388         qp_init_attr.send_cq          = ibcq;
 389         qp_init_attr.recv_cq          = ibcq;
 390         qp_init_attr.sq_sig_type      = IB_SIGNAL_ALL_WR;
 391         qp_init_attr.cap.max_send_wr  = 100;
 392         qp_init_attr.cap.max_recv_wr  = 100;
 393         qp_init_attr.cap.max_send_sge = 2;
 394         qp_init_attr.cap.max_recv_sge = 1;
 395         qp_init_attr.qp_type          = IB_QPT_GSI;
 396         qp_init_attr.port_num         = port;
 397         qp_init_attr.qp_context       = NULL;
 398         qp_init_attr.event_handler    = NULL;
 399         qp_init_attr.srq              = NULL;
 400
 401         ibqp = ib_create_qp(&shca->pd->ib_pd, &qp_init_attr);
 402         if (IS_ERR(ibqp)) {
 403                 ehca_err(&shca->ib_device, "Cannot create AQP1 QP.");
 404                 ret = PTR_ERR(ibqp);
 405                 goto create_aqp1;
 406         }
 407         sport->ibqp_aqp1 = ibqp;
 408
 409         return 0;
 410
 411 create_aqp1:
 412         ib_destroy_cq(sport->ibcq_aqp1);
 413         return ret;
 414 }
 415
 416 static int ehca_destroy_aqp1(struct ehca_sport *sport)
 417 {
 418         int ret;
 419
 420         ret = ib_destroy_qp(sport->ibqp_aqp1);
 421         if (ret) {
 422                 ehca_gen_err("Cannot destroy AQP1 QP. ret=%x", ret);
 423                 return ret;
 424         }
 425
 426         ret = ib_destroy_cq(sport->ibcq_aqp1);
 427         if (ret)
 428                 ehca_gen_err("Cannot destroy AQP1 CQ. ret=%x", ret);
 429
 430         return ret;
 431 }
 432
 433 static ssize_t ehca_show_debug_level(struct device_driver *ddp, char *buf)
 434 {
 435         return  snprintf(buf, PAGE_SIZE, "%d\n",
 436                          ehca_debug_level);
 437 }
 438
 439 static ssize_t ehca_store_debug_level(struct device_driver *ddp,
 440                                       const char *buf, size_t count)
 441 {
 442         int value = (*buf) - '0';
 443         if (value >= 0 && value <= 9)
 444                 ehca_debug_level = value;
 445         return 1;
 446 }
 447
 448 DRIVER_ATTR(debug_level, S_IRUSR | S_IWUSR,
 449             ehca_show_debug_level, ehca_store_debug_level);
 450
 451 void ehca_create_driver_sysfs(struct ibmebus_driver *drv)
 452 {
 453         driver_create_file(&drv->driver, &driver_attr_debug_level);
 454 }
 455
 456 void ehca_remove_driver_sysfs(struct ibmebus_driver *drv)
 457 {
 458         driver_remove_file(&drv->driver, &driver_attr_debug_level);
 459 }
 460
 461 #define EHCA_RESOURCE_ATTR(name)                                           \
 462 static ssize_t  ehca_show_##name(struct device *dev,                       \
 463                                  struct device_attribute *attr,            \
 464                                  char *buf)                                \
 465 {                                                                          \
 466         struct ehca_shca *shca;                                            \
 467         struct hipz_query_hca *rblock;                                     \
 468         int data;                                                          \
 469                                                                            \
 470         shca = dev->driver_data;                                           \
 471                                                                            \
 472         rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);                      \
 473         if (!rblock) {                                                     \
 474                 dev_err(dev, "Can't allocate rblock memory.");             \
 475                 return 0;                                                  \
 476         }                                                                  \
 477                                                                            \
 478         if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) { \
 479                 dev_err(dev, "Can't query device properties");             \
 480                 ehca_free_fw_ctrlblock(rblock);                            \
 481                 return 0;                                                  \
 482         }                                                                  \
 483                                                                            \
 484         data = rblock->name;                                               \
 485         ehca_free_fw_ctrlblock(rblock);                                    \
 486                                                                            \
 487         if ((strcmp(#name, "num_ports") == 0) && (ehca_nr_ports == 1))     \
 488                 return snprintf(buf, 256, "1\n");                          \
 489         else                                                               \
 490                 return snprintf(buf, 256, "%d\n", data);                   \
 491                                                                            \
 492 }                                                                          \
 493 static DEVICE_ATTR(name, S_IRUGO, ehca_show_##name, NULL);
 494
 495 EHCA_RESOURCE_ATTR(num_ports);
 496 EHCA_RESOURCE_ATTR(hw_ver);
 497 EHCA_RESOURCE_ATTR(max_eq);
 498 EHCA_RESOURCE_ATTR(cur_eq);
 499 EHCA_RESOURCE_ATTR(max_cq);
 500 EHCA_RESOURCE_ATTR(cur_cq);
 501 EHCA_RESOURCE_ATTR(max_qp);
 502 EHCA_RESOURCE_ATTR(cur_qp);
 503 EHCA_RESOURCE_ATTR(max_mr);
 504 EHCA_RESOURCE_ATTR(cur_mr);
 505 EHCA_RESOURCE_ATTR(max_mw);
 506 EHCA_RESOURCE_ATTR(cur_mw);
 507 EHCA_RESOURCE_ATTR(max_pd);
 508 EHCA_RESOURCE_ATTR(max_ah);
 509
 510 static ssize_t ehca_show_adapter_handle(struct device *dev,
 511                                         struct device_attribute *attr,
 512                                         char *buf)
 513 {
 514         struct ehca_shca *shca = dev->driver_data;
 515
 516         return sprintf(buf, "%lx\n", shca->ipz_hca_handle.handle);
 517
 518 }
 519 static DEVICE_ATTR(adapter_handle, S_IRUGO, ehca_show_adapter_handle, NULL);
 520
 521
 522 void ehca_create_device_sysfs(struct ibmebus_dev *dev)
 523 {
 524         device_create_file(&dev->ofdev.dev, &dev_attr_adapter_handle);
 525         device_create_file(&dev->ofdev.dev, &dev_attr_num_ports);
 526         device_create_file(&dev->ofdev.dev, &dev_attr_hw_ver);
 527         device_create_file(&dev->ofdev.dev, &dev_attr_max_eq);
 528         device_create_file(&dev->ofdev.dev, &dev_attr_cur_eq);
 529         device_create_file(&dev->ofdev.dev, &dev_attr_max_cq);
 530         device_create_file(&dev->ofdev.dev, &dev_attr_cur_cq);
 531         device_create_file(&dev->ofdev.dev, &dev_attr_max_qp);
 532         device_create_file(&dev->ofdev.dev, &dev_attr_cur_qp);
 533         device_create_file(&dev->ofdev.dev, &dev_attr_max_mr);
 534         device_create_file(&dev->ofdev.dev, &dev_attr_cur_mr);
 535         device_create_file(&dev->ofdev.dev, &dev_attr_max_mw);
 536         device_create_file(&dev->ofdev.dev, &dev_attr_cur_mw);
 537         device_create_file(&dev->ofdev.dev, &dev_attr_max_pd);
 538         device_create_file(&dev->ofdev.dev, &dev_attr_max_ah);
 539 }
 540
 541 void ehca_remove_device_sysfs(struct ibmebus_dev *dev)
 542 {
 543         device_remove_file(&dev->ofdev.dev, &dev_attr_adapter_handle);
 544         device_remove_file(&dev->ofdev.dev, &dev_attr_num_ports);
 545         device_remove_file(&dev->ofdev.dev, &dev_attr_hw_ver);
 546         device_remove_file(&dev->ofdev.dev, &dev_attr_max_eq);
 547         device_remove_file(&dev->ofdev.dev, &dev_attr_cur_eq);
 548         device_remove_file(&dev->ofdev.dev, &dev_attr_max_cq);
 549         device_remove_file(&dev->ofdev.dev, &dev_attr_cur_cq);
 550         device_remove_file(&dev->ofdev.dev, &dev_attr_max_qp);
 551         device_remove_file(&dev->ofdev.dev, &dev_attr_cur_qp);
 552         device_remove_file(&dev->ofdev.dev, &dev_attr_max_mr);
 553         device_remove_file(&dev->ofdev.dev, &dev_attr_cur_mr);
 554         device_remove_file(&dev->ofdev.dev, &dev_attr_max_mw);
 555         device_remove_file(&dev->ofdev.dev, &dev_attr_cur_mw);
 556         device_remove_file(&dev->ofdev.dev, &dev_attr_max_pd);
 557         device_remove_file(&dev->ofdev.dev, &dev_attr_max_ah);
 558 }
 559
 560 static int __devinit ehca_probe(struct ibmebus_dev *dev,
 561                                 const struct of_device_id *id)
 562 {
 563         struct ehca_shca *shca;
 564         u64 *handle;
 565         struct ib_pd *ibpd;
 566         int ret;
 567
 568         handle = (u64 *)get_property(dev->ofdev.node, "ibm,hca-handle", NULL);
 569         if (!handle) {
 570                 ehca_gen_err("Cannot get eHCA handle for adapter: %s.",
 571                              dev->ofdev.node->full_name);
 572                 return -ENODEV;
 573         }
 574
 575         if (!(*handle)) {
 576                 ehca_gen_err("Wrong eHCA handle for adapter: %s.",
 577                              dev->ofdev.node->full_name);
 578                 return -ENODEV;
 579         }
 580
 581         shca = (struct ehca_shca *)ib_alloc_device(sizeof(*shca));
 582         if (!shca) {
 583                 ehca_gen_err("Cannot allocate shca memory.");
 584                 return -ENOMEM;
 585         }
 586
 587         shca->ibmebus_dev = dev;
 588         shca->ipz_hca_handle.handle = *handle;
 589         dev->ofdev.dev.driver_data = shca;
 590
 591         ret = ehca_sense_attributes(shca);
 592         if (ret < 0) {
 593                 ehca_gen_err("Cannot sense eHCA attributes.");
 594                 goto probe1;
 595         }
 596
 597         ret = ehca_init_device(shca);
 598         if (ret) {
 599                 ehca_gen_err("Cannot init ehca  device struct");
 600                 goto probe1;
 601         }
 602
 603         /* create event queues */
 604         ret = ehca_create_eq(shca, &shca->eq, EHCA_EQ, 2048);
 605         if (ret) {
 606                 ehca_err(&shca->ib_device, "Cannot create EQ.");
 607                 goto probe1;
 608         }
 609
 610         ret = ehca_create_eq(shca, &shca->neq, EHCA_NEQ, 513);
 611         if (ret) {
 612                 ehca_err(&shca->ib_device, "Cannot create NEQ.");
 613                 goto probe3;
 614         }
 615
 616         /* create internal protection domain */
 617         ibpd = ehca_alloc_pd(&shca->ib_device, (void*)(-1), NULL);
 618         if (IS_ERR(ibpd)) {
 619                 ehca_err(&shca->ib_device, "Cannot create internal PD.");
 620                 ret = PTR_ERR(ibpd);
 621                 goto probe4;
 622         }
 623
 624         shca->pd = container_of(ibpd, struct ehca_pd, ib_pd);
 625         shca->pd->ib_pd.device = &shca->ib_device;
 626
 627         /* create internal max MR */
 628         ret = ehca_reg_internal_maxmr(shca, shca->pd, &shca->maxmr);
 629
 630         if (ret) {
 631                 ehca_err(&shca->ib_device, "Cannot create internal MR ret=%x",
 632                          ret);
 633                 goto probe5;
 634         }
 635
 636         ret = ib_register_device(&shca->ib_device);
 637         if (ret) {
 638                 ehca_err(&shca->ib_device,
 639                          "ib_register_device() failed ret=%x", ret);
 640                 goto probe6;
 641         }
 642
 643         /* create AQP1 for port 1 */
 644         if (ehca_open_aqp1 == 1) {
 645                 shca->sport[0].port_state = IB_PORT_DOWN;
 646                 ret = ehca_create_aqp1(shca, 1);
 647                 if (ret) {
 648                         ehca_err(&shca->ib_device,
 649                                  "Cannot create AQP1 for port 1.");
 650                         goto probe7;
 651                 }
 652         }
 653
 654         /* create AQP1 for port 2 */
 655         if ((ehca_open_aqp1 == 1) && (shca->num_ports == 2)) {
 656                 shca->sport[1].port_state = IB_PORT_DOWN;
 657                 ret = ehca_create_aqp1(shca, 2);
 658                 if (ret) {
 659                         ehca_err(&shca->ib_device,
 660                                  "Cannot create AQP1 for port 2.");
 661                         goto probe8;
 662                 }
 663         }
 664
 665         ehca_create_device_sysfs(dev);
 666
 667         spin_lock(&shca_list_lock);
 668         list_add(&shca->shca_list, &shca_list);
 669         spin_unlock(&shca_list_lock);
 670
 671         return 0;
 672
 673 probe8:
 674         ret = ehca_destroy_aqp1(&shca->sport[0]);
 675         if (ret)
 676                 ehca_err(&shca->ib_device,
 677                          "Cannot destroy AQP1 for port 1. ret=%x", ret);
 678
 679 probe7:
 680         ib_unregister_device(&shca->ib_device);
 681
 682 probe6:
 683         ret = ehca_dereg_internal_maxmr(shca);
 684         if (ret)
 685                 ehca_err(&shca->ib_device,
 686                          "Cannot destroy internal MR. ret=%x", ret);
 687
 688 probe5:
 689         ret = ehca_dealloc_pd(&shca->pd->ib_pd);
 690         if (ret)
 691                 ehca_err(&shca->ib_device,
 692                          "Cannot destroy internal PD. ret=%x", ret);
 693
 694 probe4:
 695         ret = ehca_destroy_eq(shca, &shca->neq);
 696         if (ret)
 697                 ehca_err(&shca->ib_device,
 698                          "Cannot destroy NEQ. ret=%x", ret);
 699
 700 probe3:
 701         ret = ehca_destroy_eq(shca, &shca->eq);
 702         if (ret)
 703                 ehca_err(&shca->ib_device,
 704                          "Cannot destroy EQ. ret=%x", ret);
 705
 706 probe1:
 707         ib_dealloc_device(&shca->ib_device);
 708
 709         return -EINVAL;
 710 }
 711
 712 static int __devexit ehca_remove(struct ibmebus_dev *dev)
 713 {
 714         struct ehca_shca *shca = dev->ofdev.dev.driver_data;
 715         int ret;
 716
 717         ehca_remove_device_sysfs(dev);
 718
 719         if (ehca_open_aqp1 == 1) {
 720                 int i;
 721                 for (i = 0; i < shca->num_ports; i++) {
 722                         ret = ehca_destroy_aqp1(&shca->sport[i]);
 723                         if (ret)
 724                                 ehca_err(&shca->ib_device,
 725                                          "Cannot destroy AQP1 for port %x "
 726                                          "ret=%x", ret, i);
 727                 }
 728         }
 729
 730         ib_unregister_device(&shca->ib_device);
 731
 732         ret = ehca_dereg_internal_maxmr(shca);
 733         if (ret)
 734                 ehca_err(&shca->ib_device,
 735                          "Cannot destroy internal MR. ret=%x", ret);
 736
 737         ret = ehca_dealloc_pd(&shca->pd->ib_pd);
 738         if (ret)
 739                 ehca_err(&shca->ib_device,
 740                          "Cannot destroy internal PD. ret=%x", ret);
 741
 742         ret = ehca_destroy_eq(shca, &shca->eq);
 743         if (ret)
 744                 ehca_err(&shca->ib_device, "Cannot destroy EQ. ret=%x", ret);
 745
 746         ret = ehca_destroy_eq(shca, &shca->neq);
 747         if (ret)
 748                 ehca_err(&shca->ib_device, "Canot destroy NEQ. ret=%x", ret);
 749
 750         ib_dealloc_device(&shca->ib_device);
 751
 752         spin_lock(&shca_list_lock);
 753         list_del(&shca->shca_list);
 754         spin_unlock(&shca_list_lock);
 755
 756         return ret;
 757 }
 758
 759 static struct of_device_id ehca_device_table[] =
 760 {
 761         {
 762                 .name       = "lhca",
 763                 .compatible = "IBM,lhca",
 764         },
 765         {},
 766 };
 767
 768 static struct ibmebus_driver ehca_driver = {
 769         .name     = "ehca",
 770         .id_table = ehca_device_table,
 771         .probe    = ehca_probe,
 772         .remove   = ehca_remove,
 773 };
 774
 775 void ehca_poll_eqs(unsigned long data)
 776 {
 777         struct ehca_shca *shca;
 778
 779         spin_lock(&shca_list_lock);
 780         list_for_each_entry(shca, &shca_list, shca_list) {
 781                 if (shca->eq.is_initialized)
 782                         ehca_tasklet_eq((unsigned long)(void*)shca);
 783         }
 784         mod_timer(&poll_eqs_timer, jiffies + HZ);
 785         spin_unlock(&shca_list_lock);
 786 }
 787
 788 int __init ehca_module_init(void)
 789 {
 790         int ret;
 791
 792         printk(KERN_INFO "eHCA Infiniband Device Driver "
 793                          "(Rel.: SVNEHCA_0019)\n");
 794         idr_init(&ehca_qp_idr);
 795         idr_init(&ehca_cq_idr);
 796         spin_lock_init(&ehca_qp_idr_lock);
 797         spin_lock_init(&ehca_cq_idr_lock);
 798
 799         INIT_LIST_HEAD(&shca_list);
 800         spin_lock_init(&shca_list_lock);
 801
 802         if ((ret = ehca_create_comp_pool())) {
 803                 ehca_gen_err("Cannot create comp pool.");
 804                 return ret;
 805         }
 806
 807         if ((ret = ehca_create_slab_caches())) {
 808                 ehca_gen_err("Cannot create SLAB caches");
 809                 ret = -ENOMEM;
 810                 goto module_init1;
 811         }
 812
 813         if ((ret = ibmebus_register_driver(&ehca_driver))) {
 814                 ehca_gen_err("Cannot register eHCA device driver");
 815                 ret = -EINVAL;
 816                 goto module_init2;
 817         }
 818
 819         ehca_create_driver_sysfs(&ehca_driver);
 820
 821         if (ehca_poll_all_eqs != 1) {
 822                 ehca_gen_err("WARNING!!!");
 823                 ehca_gen_err("It is possible to lose interrupts.");
 824         } else {
 825                 init_timer(&poll_eqs_timer);
 826                 poll_eqs_timer.function = ehca_poll_eqs;
 827                 poll_eqs_timer.expires = jiffies + HZ;
 828                 add_timer(&poll_eqs_timer);
 829         }
 830
 831         return 0;
 832
 833 module_init2:
 834         ehca_destroy_slab_caches();
 835
 836 module_init1:
 837         ehca_destroy_comp_pool();
 838         return ret;
 839 };
 840
 841 void __exit ehca_module_exit(void)
 842 {
 843         if (ehca_poll_all_eqs == 1)
 844                 del_timer_sync(&poll_eqs_timer);
 845
 846         ehca_remove_driver_sysfs(&ehca_driver);
 847         ibmebus_unregister_driver(&ehca_driver);
 848
 849         ehca_destroy_slab_caches();
 850
 851         ehca_destroy_comp_pool();
 852
 853         idr_destroy(&ehca_cq_idr);
 854         idr_destroy(&ehca_qp_idr);
 855 };
 856
 857 module_init(ehca_module_init);
 858 module_exit(ehca_module_exit);