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 #ifdef CONFIG_PPC_64K_PAGES
44 #include <linux/slab.h>
46 #include "ehca_classes.h"
47 #include "ehca_iverbs.h"
48 #include "ehca_mrmw.h"
49 #include "ehca_tools.h"
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_0020");
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;
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);
75 MODULE_PARM_DESC(open_aqp1,
76 "AQP1 on startup (0: no (default), 1: yes)");
77 MODULE_PARM_DESC(debug_level,
79 " (0: no debug traces (default), 1: with debug traces)");
80 MODULE_PARM_DESC(hw_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)");
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);
101 static struct list_head shca_list; /* list of all registered ehcas */
102 static spinlock_t shca_list_lock;
104 static struct timer_list poll_eqs_timer;
106 #ifdef CONFIG_PPC_64K_PAGES
107 static struct kmem_cache *ctblk_cache = NULL;
109 void *ehca_alloc_fw_ctrlblock(gfp_t flags)
111 void *ret = kmem_cache_zalloc(ctblk_cache, flags);
113 ehca_gen_err("Out of memory for ctblk");
117 void ehca_free_fw_ctrlblock(void *ptr)
120 kmem_cache_free(ctblk_cache, ptr);
125 static int ehca_create_slab_caches(void)
129 ret = ehca_init_pd_cache();
131 ehca_gen_err("Cannot create PD SLAB cache.");
135 ret = ehca_init_cq_cache();
137 ehca_gen_err("Cannot create CQ SLAB cache.");
138 goto create_slab_caches2;
141 ret = ehca_init_qp_cache();
143 ehca_gen_err("Cannot create QP SLAB cache.");
144 goto create_slab_caches3;
147 ret = ehca_init_av_cache();
149 ehca_gen_err("Cannot create AV SLAB cache.");
150 goto create_slab_caches4;
153 ret = ehca_init_mrmw_cache();
155 ehca_gen_err("Cannot create MR&MW SLAB cache.");
156 goto create_slab_caches5;
159 #ifdef CONFIG_PPC_64K_PAGES
160 ctblk_cache = kmem_cache_create("ehca_cache_ctblk",
161 EHCA_PAGESIZE, H_CB_ALIGNMENT,
165 ehca_gen_err("Cannot create ctblk SLAB cache.");
166 ehca_cleanup_mrmw_cache();
167 goto create_slab_caches5;
173 ehca_cleanup_av_cache();
176 ehca_cleanup_qp_cache();
179 ehca_cleanup_cq_cache();
182 ehca_cleanup_pd_cache();
187 static void ehca_destroy_slab_caches(void)
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
196 kmem_cache_destroy(ctblk_cache);
200 #define EHCA_HCAAVER EHCA_BMASK_IBM(32,39)
201 #define EHCA_REVID EHCA_BMASK_IBM(40,63)
203 int ehca_sense_attributes(struct ehca_shca *shca)
207 struct hipz_query_hca *rblock;
209 rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
211 ehca_gen_err("Cannot allocate rblock memory.");
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",
223 if (ehca_nr_ports == 1)
226 shca->num_ports = (u8)rblock->num_ports;
228 ehca_gen_dbg(" ... found %x ports", rblock->num_ports);
230 if (ehca_hw_level == 0) {
234 hcaaver = EHCA_BMASK_GET(EHCA_HCAAVER, rblock->hw_ver);
235 revid = EHCA_BMASK_GET(EHCA_REVID, rblock->hw_ver);
237 ehca_gen_dbg(" ... hardware version=%x:%x", hcaaver, revid);
239 if ((hcaaver == 1) && (revid == 0))
241 else if ((hcaaver == 1) && (revid == 1))
243 else if ((hcaaver == 1) && (revid == 2))
246 ehca_gen_dbg(" ... hardware level=%x", shca->hw_level);
248 shca->sport[0].rate = IB_RATE_30_GBPS;
249 shca->sport[1].rate = IB_RATE_30_GBPS;
252 ehca_free_fw_ctrlblock(rblock);
256 static int init_node_guid(struct ehca_shca *shca)
259 struct hipz_query_hca *rblock;
261 rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
263 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
267 if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) {
268 ehca_err(&shca->ib_device, "Can't query device properties");
270 goto init_node_guid1;
273 memcpy(&shca->ib_device.node_guid, &rblock->node_guid, sizeof(u64));
276 ehca_free_fw_ctrlblock(rblock);
280 int ehca_init_device(struct ehca_shca *shca)
284 ret = init_node_guid(shca);
288 strlcpy(shca->ib_device.name, "ehca%d", IB_DEVICE_NAME_MAX);
289 shca->ib_device.owner = THIS_MODULE;
291 shca->ib_device.uverbs_abi_ver = 6;
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);
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;
361 static int ehca_create_aqp1(struct ehca_shca *shca, u32 port)
363 struct ehca_sport *sport = &shca->sport[port - 1];
366 struct ib_qp_init_attr qp_init_attr;
369 if (sport->ibcq_aqp1) {
370 ehca_err(&shca->ib_device, "AQP1 CQ is already created.");
374 ibcq = ib_create_cq(&shca->ib_device, NULL, NULL, (void*)(-1), 10);
376 ehca_err(&shca->ib_device, "Cannot create AQP1 CQ.");
377 return PTR_ERR(ibcq);
379 sport->ibcq_aqp1 = ibcq;
381 if (sport->ibqp_aqp1) {
382 ehca_err(&shca->ib_device, "AQP1 QP is already created.");
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;
401 ibqp = ib_create_qp(&shca->pd->ib_pd, &qp_init_attr);
403 ehca_err(&shca->ib_device, "Cannot create AQP1 QP.");
407 sport->ibqp_aqp1 = ibqp;
412 ib_destroy_cq(sport->ibcq_aqp1);
416 static int ehca_destroy_aqp1(struct ehca_sport *sport)
420 ret = ib_destroy_qp(sport->ibqp_aqp1);
422 ehca_gen_err("Cannot destroy AQP1 QP. ret=%x", ret);
426 ret = ib_destroy_cq(sport->ibcq_aqp1);
428 ehca_gen_err("Cannot destroy AQP1 CQ. ret=%x", ret);
433 static ssize_t ehca_show_debug_level(struct device_driver *ddp, char *buf)
435 return snprintf(buf, PAGE_SIZE, "%d\n",
439 static ssize_t ehca_store_debug_level(struct device_driver *ddp,
440 const char *buf, size_t count)
442 int value = (*buf) - '0';
443 if (value >= 0 && value <= 9)
444 ehca_debug_level = value;
448 DRIVER_ATTR(debug_level, S_IRUSR | S_IWUSR,
449 ehca_show_debug_level, ehca_store_debug_level);
451 void ehca_create_driver_sysfs(struct ibmebus_driver *drv)
453 driver_create_file(&drv->driver, &driver_attr_debug_level);
456 void ehca_remove_driver_sysfs(struct ibmebus_driver *drv)
458 driver_remove_file(&drv->driver, &driver_attr_debug_level);
461 #define EHCA_RESOURCE_ATTR(name) \
462 static ssize_t ehca_show_##name(struct device *dev, \
463 struct device_attribute *attr, \
466 struct ehca_shca *shca; \
467 struct hipz_query_hca *rblock; \
470 shca = dev->driver_data; \
472 rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); \
474 dev_err(dev, "Can't allocate rblock memory."); \
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); \
484 data = rblock->name; \
485 ehca_free_fw_ctrlblock(rblock); \
487 if ((strcmp(#name, "num_ports") == 0) && (ehca_nr_ports == 1)) \
488 return snprintf(buf, 256, "1\n"); \
490 return snprintf(buf, 256, "%d\n", data); \
493 static DEVICE_ATTR(name, S_IRUGO, ehca_show_##name, NULL);
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);
510 static ssize_t ehca_show_adapter_handle(struct device *dev,
511 struct device_attribute *attr,
514 struct ehca_shca *shca = dev->driver_data;
516 return sprintf(buf, "%lx\n", shca->ipz_hca_handle.handle);
519 static DEVICE_ATTR(adapter_handle, S_IRUGO, ehca_show_adapter_handle, NULL);
522 void ehca_create_device_sysfs(struct ibmebus_dev *dev)
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);
541 void ehca_remove_device_sysfs(struct ibmebus_dev *dev)
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);
560 static int __devinit ehca_probe(struct ibmebus_dev *dev,
561 const struct of_device_id *id)
563 struct ehca_shca *shca;
568 handle = (u64 *)get_property(dev->ofdev.node, "ibm,hca-handle", NULL);
570 ehca_gen_err("Cannot get eHCA handle for adapter: %s.",
571 dev->ofdev.node->full_name);
576 ehca_gen_err("Wrong eHCA handle for adapter: %s.",
577 dev->ofdev.node->full_name);
581 shca = (struct ehca_shca *)ib_alloc_device(sizeof(*shca));
583 ehca_gen_err("Cannot allocate shca memory.");
587 shca->ibmebus_dev = dev;
588 shca->ipz_hca_handle.handle = *handle;
589 dev->ofdev.dev.driver_data = shca;
591 ret = ehca_sense_attributes(shca);
593 ehca_gen_err("Cannot sense eHCA attributes.");
597 ret = ehca_init_device(shca);
599 ehca_gen_err("Cannot init ehca device struct");
603 /* create event queues */
604 ret = ehca_create_eq(shca, &shca->eq, EHCA_EQ, 2048);
606 ehca_err(&shca->ib_device, "Cannot create EQ.");
610 ret = ehca_create_eq(shca, &shca->neq, EHCA_NEQ, 513);
612 ehca_err(&shca->ib_device, "Cannot create NEQ.");
616 /* create internal protection domain */
617 ibpd = ehca_alloc_pd(&shca->ib_device, (void*)(-1), NULL);
619 ehca_err(&shca->ib_device, "Cannot create internal PD.");
624 shca->pd = container_of(ibpd, struct ehca_pd, ib_pd);
625 shca->pd->ib_pd.device = &shca->ib_device;
627 /* create internal max MR */
628 ret = ehca_reg_internal_maxmr(shca, shca->pd, &shca->maxmr);
631 ehca_err(&shca->ib_device, "Cannot create internal MR ret=%x",
636 ret = ib_register_device(&shca->ib_device);
638 ehca_err(&shca->ib_device,
639 "ib_register_device() failed ret=%x", ret);
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);
648 ehca_err(&shca->ib_device,
649 "Cannot create AQP1 for port 1.");
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);
659 ehca_err(&shca->ib_device,
660 "Cannot create AQP1 for port 2.");
665 ehca_create_device_sysfs(dev);
667 spin_lock(&shca_list_lock);
668 list_add(&shca->shca_list, &shca_list);
669 spin_unlock(&shca_list_lock);
674 ret = ehca_destroy_aqp1(&shca->sport[0]);
676 ehca_err(&shca->ib_device,
677 "Cannot destroy AQP1 for port 1. ret=%x", ret);
680 ib_unregister_device(&shca->ib_device);
683 ret = ehca_dereg_internal_maxmr(shca);
685 ehca_err(&shca->ib_device,
686 "Cannot destroy internal MR. ret=%x", ret);
689 ret = ehca_dealloc_pd(&shca->pd->ib_pd);
691 ehca_err(&shca->ib_device,
692 "Cannot destroy internal PD. ret=%x", ret);
695 ret = ehca_destroy_eq(shca, &shca->neq);
697 ehca_err(&shca->ib_device,
698 "Cannot destroy NEQ. ret=%x", ret);
701 ret = ehca_destroy_eq(shca, &shca->eq);
703 ehca_err(&shca->ib_device,
704 "Cannot destroy EQ. ret=%x", ret);
707 ib_dealloc_device(&shca->ib_device);
712 static int __devexit ehca_remove(struct ibmebus_dev *dev)
714 struct ehca_shca *shca = dev->ofdev.dev.driver_data;
717 ehca_remove_device_sysfs(dev);
719 if (ehca_open_aqp1 == 1) {
721 for (i = 0; i < shca->num_ports; i++) {
722 ret = ehca_destroy_aqp1(&shca->sport[i]);
724 ehca_err(&shca->ib_device,
725 "Cannot destroy AQP1 for port %x "
730 ib_unregister_device(&shca->ib_device);
732 ret = ehca_dereg_internal_maxmr(shca);
734 ehca_err(&shca->ib_device,
735 "Cannot destroy internal MR. ret=%x", ret);
737 ret = ehca_dealloc_pd(&shca->pd->ib_pd);
739 ehca_err(&shca->ib_device,
740 "Cannot destroy internal PD. ret=%x", ret);
742 ret = ehca_destroy_eq(shca, &shca->eq);
744 ehca_err(&shca->ib_device, "Cannot destroy EQ. ret=%x", ret);
746 ret = ehca_destroy_eq(shca, &shca->neq);
748 ehca_err(&shca->ib_device, "Canot destroy NEQ. ret=%x", ret);
750 ib_dealloc_device(&shca->ib_device);
752 spin_lock(&shca_list_lock);
753 list_del(&shca->shca_list);
754 spin_unlock(&shca_list_lock);
759 static struct of_device_id ehca_device_table[] =
763 .compatible = "IBM,lhca",
768 static struct ibmebus_driver ehca_driver = {
770 .id_table = ehca_device_table,
772 .remove = ehca_remove,
775 void ehca_poll_eqs(unsigned long data)
777 struct ehca_shca *shca;
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);
784 mod_timer(&poll_eqs_timer, jiffies + HZ);
785 spin_unlock(&shca_list_lock);
788 int __init ehca_module_init(void)
792 printk(KERN_INFO "eHCA Infiniband Device Driver "
793 "(Rel.: SVNEHCA_0020)\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);
799 INIT_LIST_HEAD(&shca_list);
800 spin_lock_init(&shca_list_lock);
802 if ((ret = ehca_create_comp_pool())) {
803 ehca_gen_err("Cannot create comp pool.");
807 if ((ret = ehca_create_slab_caches())) {
808 ehca_gen_err("Cannot create SLAB caches");
813 if ((ret = ibmebus_register_driver(&ehca_driver))) {
814 ehca_gen_err("Cannot register eHCA device driver");
819 ehca_create_driver_sysfs(&ehca_driver);
821 if (ehca_poll_all_eqs != 1) {
822 ehca_gen_err("WARNING!!!");
823 ehca_gen_err("It is possible to lose interrupts.");
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);
834 ehca_destroy_slab_caches();
837 ehca_destroy_comp_pool();
841 void __exit ehca_module_exit(void)
843 if (ehca_poll_all_eqs == 1)
844 del_timer_sync(&poll_eqs_timer);
846 ehca_remove_driver_sysfs(&ehca_driver);
847 ibmebus_unregister_driver(&ehca_driver);
849 ehca_destroy_slab_caches();
851 ehca_destroy_comp_pool();
853 idr_destroy(&ehca_cq_idr);
854 idr_destroy(&ehca_qp_idr);
857 module_init(ehca_module_init);
858 module_exit(ehca_module_exit);