2 * IBM eServer eHCA Infiniband device driver for Linux on POWER
4 * module start stop, hca detection
6 * Authors: Heiko J Schick <schickhj@de.ibm.com>
7 * Hoang-Nam Nguyen <hnguyen@de.ibm.com>
8 * Joachim Fenkes <fenkes@de.ibm.com>
10 * Copyright (c) 2005 IBM Corporation
12 * All rights reserved.
14 * This source code is distributed under a dual license of GPL v2.0 and OpenIB
19 * Redistribution and use in source and binary forms, with or without
20 * modification, are permitted provided that the following conditions are met:
22 * Redistributions of source code must retain the above copyright notice, this
23 * list of conditions and the following disclaimer.
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.
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.
43 #include "ehca_classes.h"
44 #include "ehca_iverbs.h"
45 #include "ehca_mrmw.h"
46 #include "ehca_tools.h"
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");
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;
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);
72 MODULE_PARM_DESC(open_aqp1,
73 "AQP1 on startup (0: no (default), 1: yes)");
74 MODULE_PARM_DESC(debug_level,
76 " (0: no debug traces (default), 1: with debug traces)");
77 MODULE_PARM_DESC(hw_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)");
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);
97 static struct list_head shca_list; /* list of all registered ehcas */
98 static spinlock_t shca_list_lock;
100 static struct timer_list poll_eqs_timer;
102 static int ehca_create_slab_caches(void)
106 ret = ehca_init_pd_cache();
108 ehca_gen_err("Cannot create PD SLAB cache.");
112 ret = ehca_init_cq_cache();
114 ehca_gen_err("Cannot create CQ SLAB cache.");
115 goto create_slab_caches2;
118 ret = ehca_init_qp_cache();
120 ehca_gen_err("Cannot create QP SLAB cache.");
121 goto create_slab_caches3;
124 ret = ehca_init_av_cache();
126 ehca_gen_err("Cannot create AV SLAB cache.");
127 goto create_slab_caches4;
130 ret = ehca_init_mrmw_cache();
132 ehca_gen_err("Cannot create MR&MW SLAB cache.");
133 goto create_slab_caches5;
139 ehca_cleanup_av_cache();
142 ehca_cleanup_qp_cache();
145 ehca_cleanup_cq_cache();
148 ehca_cleanup_pd_cache();
153 static void ehca_destroy_slab_caches(void)
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();
162 #define EHCA_HCAAVER EHCA_BMASK_IBM(32,39)
163 #define EHCA_REVID EHCA_BMASK_IBM(40,63)
165 int ehca_sense_attributes(struct ehca_shca *shca)
169 struct hipz_query_hca *rblock;
171 rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
173 ehca_gen_err("Cannot allocate rblock memory.");
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",
185 if (ehca_nr_ports == 1)
188 shca->num_ports = (u8)rblock->num_ports;
190 ehca_gen_dbg(" ... found %x ports", rblock->num_ports);
192 if (ehca_hw_level == 0) {
196 hcaaver = EHCA_BMASK_GET(EHCA_HCAAVER, rblock->hw_ver);
197 revid = EHCA_BMASK_GET(EHCA_REVID, rblock->hw_ver);
199 ehca_gen_dbg(" ... hardware version=%x:%x", hcaaver, revid);
201 if ((hcaaver == 1) && (revid == 0))
203 else if ((hcaaver == 1) && (revid == 1))
205 else if ((hcaaver == 1) && (revid == 2))
208 ehca_gen_dbg(" ... hardware level=%x", shca->hw_level);
210 shca->sport[0].rate = IB_RATE_30_GBPS;
211 shca->sport[1].rate = IB_RATE_30_GBPS;
218 static int init_node_guid(struct ehca_shca *shca)
221 struct hipz_query_hca *rblock;
223 rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
225 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
229 if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) {
230 ehca_err(&shca->ib_device, "Can't query device properties");
232 goto init_node_guid1;
235 memcpy(&shca->ib_device.node_guid, &rblock->node_guid, sizeof(u64));
242 int ehca_init_device(struct ehca_shca *shca)
246 ret = init_node_guid(shca);
250 strlcpy(shca->ib_device.name, "ehca%d", IB_DEVICE_NAME_MAX);
251 shca->ib_device.owner = THIS_MODULE;
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);
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;
323 static int ehca_create_aqp1(struct ehca_shca *shca, u32 port)
325 struct ehca_sport *sport = &shca->sport[port - 1];
328 struct ib_qp_init_attr qp_init_attr;
331 if (sport->ibcq_aqp1) {
332 ehca_err(&shca->ib_device, "AQP1 CQ is already created.");
336 ibcq = ib_create_cq(&shca->ib_device, NULL, NULL, (void*)(-1), 10);
338 ehca_err(&shca->ib_device, "Cannot create AQP1 CQ.");
339 return PTR_ERR(ibcq);
341 sport->ibcq_aqp1 = ibcq;
343 if (sport->ibqp_aqp1) {
344 ehca_err(&shca->ib_device, "AQP1 QP is already created.");
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;
363 ibqp = ib_create_qp(&shca->pd->ib_pd, &qp_init_attr);
365 ehca_err(&shca->ib_device, "Cannot create AQP1 QP.");
369 sport->ibqp_aqp1 = ibqp;
374 ib_destroy_cq(sport->ibcq_aqp1);
378 static int ehca_destroy_aqp1(struct ehca_sport *sport)
382 ret = ib_destroy_qp(sport->ibqp_aqp1);
384 ehca_gen_err("Cannot destroy AQP1 QP. ret=%x", ret);
388 ret = ib_destroy_cq(sport->ibcq_aqp1);
390 ehca_gen_err("Cannot destroy AQP1 CQ. ret=%x", ret);
395 static ssize_t ehca_show_debug_level(struct device_driver *ddp, char *buf)
397 return snprintf(buf, PAGE_SIZE, "%d\n",
401 static ssize_t ehca_store_debug_level(struct device_driver *ddp,
402 const char *buf, size_t count)
404 int value = (*buf) - '0';
405 if (value >= 0 && value <= 9)
406 ehca_debug_level = value;
410 DRIVER_ATTR(debug_level, S_IRUSR | S_IWUSR,
411 ehca_show_debug_level, ehca_store_debug_level);
413 void ehca_create_driver_sysfs(struct ibmebus_driver *drv)
415 driver_create_file(&drv->driver, &driver_attr_debug_level);
418 void ehca_remove_driver_sysfs(struct ibmebus_driver *drv)
420 driver_remove_file(&drv->driver, &driver_attr_debug_level);
423 #define EHCA_RESOURCE_ATTR(name) \
424 static ssize_t ehca_show_##name(struct device *dev, \
425 struct device_attribute *attr, \
428 struct ehca_shca *shca; \
429 struct hipz_query_hca *rblock; \
432 shca = dev->driver_data; \
434 rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL); \
436 dev_err(dev, "Can't allocate rblock memory."); \
440 if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) { \
441 dev_err(dev, "Can't query device properties"); \
446 data = rblock->name; \
449 if ((strcmp(#name, "num_ports") == 0) && (ehca_nr_ports == 1)) \
450 return snprintf(buf, 256, "1\n"); \
452 return snprintf(buf, 256, "%d\n", data); \
455 static DEVICE_ATTR(name, S_IRUGO, ehca_show_##name, NULL);
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);
472 static ssize_t ehca_show_adapter_handle(struct device *dev,
473 struct device_attribute *attr,
476 struct ehca_shca *shca = dev->driver_data;
478 return sprintf(buf, "%lx\n", shca->ipz_hca_handle.handle);
481 static DEVICE_ATTR(adapter_handle, S_IRUGO, ehca_show_adapter_handle, NULL);
484 void ehca_create_device_sysfs(struct ibmebus_dev *dev)
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);
503 void ehca_remove_device_sysfs(struct ibmebus_dev *dev)
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);
522 static int __devinit ehca_probe(struct ibmebus_dev *dev,
523 const struct of_device_id *id)
525 struct ehca_shca *shca;
530 handle = (u64 *)get_property(dev->ofdev.node, "ibm,hca-handle", NULL);
532 ehca_gen_err("Cannot get eHCA handle for adapter: %s.",
533 dev->ofdev.node->full_name);
538 ehca_gen_err("Wrong eHCA handle for adapter: %s.",
539 dev->ofdev.node->full_name);
543 shca = (struct ehca_shca *)ib_alloc_device(sizeof(*shca));
545 ehca_gen_err("Cannot allocate shca memory.");
549 shca->ibmebus_dev = dev;
550 shca->ipz_hca_handle.handle = *handle;
551 dev->ofdev.dev.driver_data = shca;
553 ret = ehca_sense_attributes(shca);
555 ehca_gen_err("Cannot sense eHCA attributes.");
559 ret = ehca_init_device(shca);
561 ehca_gen_err("Cannot init ehca device struct");
565 /* create event queues */
566 ret = ehca_create_eq(shca, &shca->eq, EHCA_EQ, 2048);
568 ehca_err(&shca->ib_device, "Cannot create EQ.");
572 ret = ehca_create_eq(shca, &shca->neq, EHCA_NEQ, 513);
574 ehca_err(&shca->ib_device, "Cannot create NEQ.");
578 /* create internal protection domain */
579 ibpd = ehca_alloc_pd(&shca->ib_device, (void*)(-1), NULL);
581 ehca_err(&shca->ib_device, "Cannot create internal PD.");
586 shca->pd = container_of(ibpd, struct ehca_pd, ib_pd);
587 shca->pd->ib_pd.device = &shca->ib_device;
589 /* create internal max MR */
590 ret = ehca_reg_internal_maxmr(shca, shca->pd, &shca->maxmr);
593 ehca_err(&shca->ib_device, "Cannot create internal MR ret=%x",
598 ret = ib_register_device(&shca->ib_device);
600 ehca_err(&shca->ib_device,
601 "ib_register_device() failed ret=%x", ret);
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);
610 ehca_err(&shca->ib_device,
611 "Cannot create AQP1 for port 1.");
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);
621 ehca_err(&shca->ib_device,
622 "Cannot create AQP1 for port 2.");
627 ehca_create_device_sysfs(dev);
629 spin_lock(&shca_list_lock);
630 list_add(&shca->shca_list, &shca_list);
631 spin_unlock(&shca_list_lock);
636 ret = ehca_destroy_aqp1(&shca->sport[0]);
638 ehca_err(&shca->ib_device,
639 "Cannot destroy AQP1 for port 1. ret=%x", ret);
642 ib_unregister_device(&shca->ib_device);
645 ret = ehca_dereg_internal_maxmr(shca);
647 ehca_err(&shca->ib_device,
648 "Cannot destroy internal MR. ret=%x", ret);
651 ret = ehca_dealloc_pd(&shca->pd->ib_pd);
653 ehca_err(&shca->ib_device,
654 "Cannot destroy internal PD. ret=%x", ret);
657 ret = ehca_destroy_eq(shca, &shca->neq);
659 ehca_err(&shca->ib_device,
660 "Cannot destroy NEQ. ret=%x", ret);
663 ret = ehca_destroy_eq(shca, &shca->eq);
665 ehca_err(&shca->ib_device,
666 "Cannot destroy EQ. ret=%x", ret);
669 ib_dealloc_device(&shca->ib_device);
674 static int __devexit ehca_remove(struct ibmebus_dev *dev)
676 struct ehca_shca *shca = dev->ofdev.dev.driver_data;
679 ehca_remove_device_sysfs(dev);
681 if (ehca_open_aqp1 == 1) {
683 for (i = 0; i < shca->num_ports; i++) {
684 ret = ehca_destroy_aqp1(&shca->sport[i]);
686 ehca_err(&shca->ib_device,
687 "Cannot destroy AQP1 for port %x "
692 ib_unregister_device(&shca->ib_device);
694 ret = ehca_dereg_internal_maxmr(shca);
696 ehca_err(&shca->ib_device,
697 "Cannot destroy internal MR. ret=%x", ret);
699 ret = ehca_dealloc_pd(&shca->pd->ib_pd);
701 ehca_err(&shca->ib_device,
702 "Cannot destroy internal PD. ret=%x", ret);
704 ret = ehca_destroy_eq(shca, &shca->eq);
706 ehca_err(&shca->ib_device, "Cannot destroy EQ. ret=%x", ret);
708 ret = ehca_destroy_eq(shca, &shca->neq);
710 ehca_err(&shca->ib_device, "Canot destroy NEQ. ret=%x", ret);
712 ib_dealloc_device(&shca->ib_device);
714 spin_lock(&shca_list_lock);
715 list_del(&shca->shca_list);
716 spin_unlock(&shca_list_lock);
721 static struct of_device_id ehca_device_table[] =
725 .compatible = "IBM,lhca",
730 static struct ibmebus_driver ehca_driver = {
732 .id_table = ehca_device_table,
734 .remove = ehca_remove,
737 void ehca_poll_eqs(unsigned long data)
739 struct ehca_shca *shca;
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);
746 mod_timer(&poll_eqs_timer, jiffies + HZ);
747 spin_unlock(&shca_list_lock);
750 int __init ehca_module_init(void)
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);
761 INIT_LIST_HEAD(&shca_list);
762 spin_lock_init(&shca_list_lock);
764 if ((ret = ehca_create_comp_pool())) {
765 ehca_gen_err("Cannot create comp pool.");
769 if ((ret = ehca_create_slab_caches())) {
770 ehca_gen_err("Cannot create SLAB caches");
775 if ((ret = ibmebus_register_driver(&ehca_driver))) {
776 ehca_gen_err("Cannot register eHCA device driver");
781 ehca_create_driver_sysfs(&ehca_driver);
783 if (ehca_poll_all_eqs != 1) {
784 ehca_gen_err("WARNING!!!");
785 ehca_gen_err("It is possible to lose interrupts.");
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);
796 ehca_destroy_slab_caches();
799 ehca_destroy_comp_pool();
803 void __exit ehca_module_exit(void)
805 if (ehca_poll_all_eqs == 1)
806 del_timer_sync(&poll_eqs_timer);
808 ehca_remove_driver_sysfs(&ehca_driver);
809 ibmebus_unregister_driver(&ehca_driver);
811 ehca_destroy_slab_caches();
813 ehca_destroy_comp_pool();
815 idr_destroy(&ehca_cq_idr);
816 idr_destroy(&ehca_qp_idr);
819 module_init(ehca_module_init);
820 module_exit(ehca_module_exit);