projects / linux-2.6-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Merge branch 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband
[linux-2.6-block.git] / drivers / infiniband / hw / ehca / ehca_main.c
CommitLineData
fab97220
HS		 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
49MODULE_LICENSE("Dual BSD/GPL");
50MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
51MODULE_DESCRIPTION("IBM eServer HCA InfiniBand Device Driver");
0f248d9c 52MODULE_VERSION("SVNEHCA_0017");
fab97220
HS		 53
54int ehca_open_aqp1 = 0;
55int ehca_debug_level = 0;
56int ehca_hw_level = 0;
57int ehca_nr_ports = 2;
58int ehca_use_hp_mr = 0;
59int ehca_port_act_time = 30;
60int ehca_poll_all_eqs = 1;
61int ehca_static_rate = -1;
62
63module_param_named(open_aqp1, ehca_open_aqp1, int, 0);
64module_param_named(debug_level, ehca_debug_level, int, 0);
65module_param_named(hw_level, ehca_hw_level, int, 0);
66module_param_named(nr_ports, ehca_nr_ports, int, 0);
67module_param_named(use_hp_mr, ehca_use_hp_mr, int, 0);
68module_param_named(port_act_time, ehca_port_act_time, int, 0);
69module_param_named(poll_all_eqs, ehca_poll_all_eqs, int, 0);
70module_param_named(static_rate, ehca_static_rate, int, 0);
71
72MODULE_PARM_DESC(open_aqp1,
73 "AQP1 on startup (0: no (default), 1: yes)");
74MODULE_PARM_DESC(debug_level,
75 "debug level"
76 " (0: no debug traces (default), 1: with debug traces)");
77MODULE_PARM_DESC(hw_level,
78 "hardware level"
79 " (0: autosensing (default), 1: v. 0.20, 2: v. 0.21)");
80MODULE_PARM_DESC(nr_ports,
81 "number of connected ports (default: 2)");
82MODULE_PARM_DESC(use_hp_mr,
83 "high performance MRs (0: no (default), 1: yes)");
84MODULE_PARM_DESC(port_act_time,
85 "time to wait for port activation (default: 30 sec)");
86MODULE_PARM_DESC(poll_all_eqs,
87 "polls all event queues periodically"
88 " (0: no, 1: yes (default))");
89MODULE_PARM_DESC(static_rate,
90 "set permanent static rate (default: disabled)");
91
92spinlock_t ehca_qp_idr_lock;
93spinlock_t ehca_cq_idr_lock;
94DEFINE_IDR(ehca_qp_idr);
95DEFINE_IDR(ehca_cq_idr);
96
97static struct list_head shca_list; /* list of all registered ehcas */
98static spinlock_t shca_list_lock;
99
100static struct timer_list poll_eqs_timer;
101
102static 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
138create_slab_caches5:
139 ehca_cleanup_av_cache();
140
141create_slab_caches4:
142 ehca_cleanup_qp_cache();
143
144create_slab_caches3:
145 ehca_cleanup_cq_cache();
146
147create_slab_caches2:
148 ehca_cleanup_pd_cache();
149
150 return ret;
151}
152
153static 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
165int 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
213num_ports1:
214 kfree(rblock);
215 return ret;
216}
217
218static 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
237init_node_guid1:
238 kfree(rblock);
239 return ret;
240}
241
0f248d9c 242int ehca_init_device(struct ehca_shca *shca)
fab97220
HS		 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
07ebafba 272 shca->ib_device.node_type = RDMA_NODE_IB_CA;
fab97220
HS		 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
fab97220
HS		 320 return ret;
321}
322
323static int ehca_create_aqp1(struct ehca_shca *shca, u32 port)
324{
325 struct ehca_sport *sport = &shca->sport[port - 1];
326 struct ib_cq *ibcq;
327 struct ib_qp *ibqp;
328 struct ib_qp_init_attr qp_init_attr;
329 int ret;
330
331 if (sport->ibcq_aqp1) {
332 ehca_err(&shca->ib_device, "AQP1 CQ is already created.");
333 return -EPERM;
334 }
335
336 ibcq = ib_create_cq(&shca->ib_device, NULL, NULL, (void*)(-1), 10);
337 if (IS_ERR(ibcq)) {
338 ehca_err(&shca->ib_device, "Cannot create AQP1 CQ.");
339 return PTR_ERR(ibcq);
340 }
341 sport->ibcq_aqp1 = ibcq;
342
343 if (sport->ibqp_aqp1) {
344 ehca_err(&shca->ib_device, "AQP1 QP is already created.");
345 ret = -EPERM;
346 goto create_aqp1;
347 }
348
349 memset(&qp_init_attr, 0, sizeof(struct ib_qp_init_attr));
350 qp_init_attr.send_cq = ibcq;
351 qp_init_attr.recv_cq = ibcq;
352 qp_init_attr.sq_sig_type = IB_SIGNAL_ALL_WR;
353 qp_init_attr.cap.max_send_wr = 100;
354 qp_init_attr.cap.max_recv_wr = 100;
355 qp_init_attr.cap.max_send_sge = 2;
356 qp_init_attr.cap.max_recv_sge = 1;
357 qp_init_attr.qp_type = IB_QPT_GSI;
358 qp_init_attr.port_num = port;
359 qp_init_attr.qp_context = NULL;
360 qp_init_attr.event_handler = NULL;
361 qp_init_attr.srq = NULL;
362
363 ibqp = ib_create_qp(&shca->pd->ib_pd, &qp_init_attr);
364 if (IS_ERR(ibqp)) {
365 ehca_err(&shca->ib_device, "Cannot create AQP1 QP.");
366 ret = PTR_ERR(ibqp);
367 goto create_aqp1;
368 }
369 sport->ibqp_aqp1 = ibqp;
370
371 return 0;
372
373create_aqp1:
374 ib_destroy_cq(sport->ibcq_aqp1);
375 return ret;
376}
377
378static int ehca_destroy_aqp1(struct ehca_sport *sport)
379{
380 int ret;
381
382 ret = ib_destroy_qp(sport->ibqp_aqp1);
383 if (ret) {
384 ehca_gen_err("Cannot destroy AQP1 QP. ret=%x", ret);
385 return ret;
386 }
387
388 ret = ib_destroy_cq(sport->ibcq_aqp1);
389 if (ret)
390 ehca_gen_err("Cannot destroy AQP1 CQ. ret=%x", ret);
391
392 return ret;
393}
394
395static ssize_t ehca_show_debug_level(struct device_driver *ddp, char *buf)
396{
397 return snprintf(buf, PAGE_SIZE, "%d\n",
398 ehca_debug_level);
399}
400
401static ssize_t ehca_store_debug_level(struct device_driver *ddp,
402 const char *buf, size_t count)
403{
404 int value = (*buf) - '0';
405 if (value >= 0 && value <= 9)
406 ehca_debug_level = value;
407 return 1;
408}
409
410DRIVER_ATTR(debug_level, S_IRUSR | S_IWUSR,
411 ehca_show_debug_level, ehca_store_debug_level);
412
413void ehca_create_driver_sysfs(struct ibmebus_driver *drv)
414{
415 driver_create_file(&drv->driver, &driver_attr_debug_level);
416}
417
418void ehca_remove_driver_sysfs(struct ibmebus_driver *drv)
419{
420 driver_remove_file(&drv->driver, &driver_attr_debug_level);
421}
422
423#define EHCA_RESOURCE_ATTR(name) \
424static ssize_t ehca_show_##name(struct device *dev, \
425 struct device_attribute *attr, \
426 char *buf) \
427{ \
428 struct ehca_shca *shca; \
429 struct hipz_query_hca *rblock; \
430 int data; \
431 \
432 shca = dev->driver_data; \
433 \
434 rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL); \
435 if (!rblock) { \
436 dev_err(dev, "Can't allocate rblock memory."); \
437 return 0; \
438 } \
439 \
440 if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) { \
441 dev_err(dev, "Can't query device properties"); \
442 kfree(rblock); \
443 return 0; \
444 } \
445 \
446 data = rblock->name; \
447 kfree(rblock); \
448 \
449 if ((strcmp(#name, "num_ports") == 0) && (ehca_nr_ports == 1)) \
450 return snprintf(buf, 256, "1\n"); \
451 else \
452 return snprintf(buf, 256, "%d\n", data); \
453 \
454} \
455static DEVICE_ATTR(name, S_IRUGO, ehca_show_##name, NULL);
456
457EHCA_RESOURCE_ATTR(num_ports);
458EHCA_RESOURCE_ATTR(hw_ver);
459EHCA_RESOURCE_ATTR(max_eq);
460EHCA_RESOURCE_ATTR(cur_eq);
461EHCA_RESOURCE_ATTR(max_cq);
462EHCA_RESOURCE_ATTR(cur_cq);
463EHCA_RESOURCE_ATTR(max_qp);
464EHCA_RESOURCE_ATTR(cur_qp);
465EHCA_RESOURCE_ATTR(max_mr);
466EHCA_RESOURCE_ATTR(cur_mr);
467EHCA_RESOURCE_ATTR(max_mw);
468EHCA_RESOURCE_ATTR(cur_mw);
469EHCA_RESOURCE_ATTR(max_pd);
470EHCA_RESOURCE_ATTR(max_ah);
471
472static ssize_t ehca_show_adapter_handle(struct device *dev,
473 struct device_attribute *attr,
474 char *buf)
475{
476 struct ehca_shca *shca = dev->driver_data;
477
478 return sprintf(buf, "%lx\n", shca->ipz_hca_handle.handle);
479
480}
481static DEVICE_ATTR(adapter_handle, S_IRUGO, ehca_show_adapter_handle, NULL);
482
483
484void ehca_create_device_sysfs(struct ibmebus_dev *dev)
485{
486 device_create_file(&dev->ofdev.dev, &dev_attr_adapter_handle);
487 device_create_file(&dev->ofdev.dev, &dev_attr_num_ports);
488 device_create_file(&dev->ofdev.dev, &dev_attr_hw_ver);
489 device_create_file(&dev->ofdev.dev, &dev_attr_max_eq);
490 device_create_file(&dev->ofdev.dev, &dev_attr_cur_eq);
491 device_create_file(&dev->ofdev.dev, &dev_attr_max_cq);
492 device_create_file(&dev->ofdev.dev, &dev_attr_cur_cq);
493 device_create_file(&dev->ofdev.dev, &dev_attr_max_qp);
494 device_create_file(&dev->ofdev.dev, &dev_attr_cur_qp);
495 device_create_file(&dev->ofdev.dev, &dev_attr_max_mr);
496 device_create_file(&dev->ofdev.dev, &dev_attr_cur_mr);
497 device_create_file(&dev->ofdev.dev, &dev_attr_max_mw);
498 device_create_file(&dev->ofdev.dev, &dev_attr_cur_mw);
499 device_create_file(&dev->ofdev.dev, &dev_attr_max_pd);
500 device_create_file(&dev->ofdev.dev, &dev_attr_max_ah);
501}
502
503void ehca_remove_device_sysfs(struct ibmebus_dev *dev)
504{
505 device_remove_file(&dev->ofdev.dev, &dev_attr_adapter_handle);
506 device_remove_file(&dev->ofdev.dev, &dev_attr_num_ports);
507 device_remove_file(&dev->ofdev.dev, &dev_attr_hw_ver);
508 device_remove_file(&dev->ofdev.dev, &dev_attr_max_eq);
509 device_remove_file(&dev->ofdev.dev, &dev_attr_cur_eq);
510 device_remove_file(&dev->ofdev.dev, &dev_attr_max_cq);
511 device_remove_file(&dev->ofdev.dev, &dev_attr_cur_cq);
512 device_remove_file(&dev->ofdev.dev, &dev_attr_max_qp);
513 device_remove_file(&dev->ofdev.dev, &dev_attr_cur_qp);
514 device_remove_file(&dev->ofdev.dev, &dev_attr_max_mr);
515 device_remove_file(&dev->ofdev.dev, &dev_attr_cur_mr);
516 device_remove_file(&dev->ofdev.dev, &dev_attr_max_mw);
517 device_remove_file(&dev->ofdev.dev, &dev_attr_cur_mw);
518 device_remove_file(&dev->ofdev.dev, &dev_attr_max_pd);
519 device_remove_file(&dev->ofdev.dev, &dev_attr_max_ah);
520}
521
522static int __devinit ehca_probe(struct ibmebus_dev *dev,
523 const struct of_device_id *id)
524{
525 struct ehca_shca *shca;
526 u64 *handle;
527 struct ib_pd *ibpd;
528 int ret;
529
530 handle = (u64 *)get_property(dev->ofdev.node, "ibm,hca-handle", NULL);
531 if (!handle) {
532 ehca_gen_err("Cannot get eHCA handle for adapter: %s.",
533 dev->ofdev.node->full_name);
534 return -ENODEV;
535 }
536
537 if (!(*handle)) {
538 ehca_gen_err("Wrong eHCA handle for adapter: %s.",
539 dev->ofdev.node->full_name);
540 return -ENODEV;
541 }
542
543 shca = (struct ehca_shca *)ib_alloc_device(sizeof(*shca));
544 if (!shca) {
545 ehca_gen_err("Cannot allocate shca memory.");
546 return -ENOMEM;
547 }
548
549 shca->ibmebus_dev = dev;
550 shca->ipz_hca_handle.handle = *handle;
551 dev->ofdev.dev.driver_data = shca;
552
553 ret = ehca_sense_attributes(shca);
554 if (ret < 0) {
555 ehca_gen_err("Cannot sense eHCA attributes.");
556 goto probe1;
557 }
558
0f248d9c 559 ret = ehca_init_device(shca);
fab97220 560 if (ret) {
0f248d9c 561 ehca_gen_err("Cannot init ehca device struct");
fab97220
HS		 562 goto probe1;
563 }
564
565 /* create event queues */
566 ret = ehca_create_eq(shca, &shca->eq, EHCA_EQ, 2048);
567 if (ret) {
568 ehca_err(&shca->ib_device, "Cannot create EQ.");
0f248d9c 569 goto probe1;
fab97220
HS		 570 }
571
572 ret = ehca_create_eq(shca, &shca->neq, EHCA_NEQ, 513);
573 if (ret) {
574 ehca_err(&shca->ib_device, "Cannot create NEQ.");
575 goto probe3;
576 }
577
578 /* create internal protection domain */
579 ibpd = ehca_alloc_pd(&shca->ib_device, (void*)(-1), NULL);
580 if (IS_ERR(ibpd)) {
581 ehca_err(&shca->ib_device, "Cannot create internal PD.");
582 ret = PTR_ERR(ibpd);
583 goto probe4;
584 }
585
586 shca->pd = container_of(ibpd, struct ehca_pd, ib_pd);
587 shca->pd->ib_pd.device = &shca->ib_device;
588
589 /* create internal max MR */
590 ret = ehca_reg_internal_maxmr(shca, shca->pd, &shca->maxmr);
591
592 if (ret) {
593 ehca_err(&shca->ib_device, "Cannot create internal MR ret=%x",
594 ret);
595 goto probe5;
596 }
597
0f248d9c
HNN		 598 ret = ib_register_device(&shca->ib_device);
599 if (ret) {
600 ehca_err(&shca->ib_device,
601 "ib_register_device() failed ret=%x", ret);
602 goto probe6;
603 }
604
fab97220
HS		 605 /* create AQP1 for port 1 */
606 if (ehca_open_aqp1 == 1) {
607 shca->sport[0].port_state = IB_PORT_DOWN;
608 ret = ehca_create_aqp1(shca, 1);
609 if (ret) {
610 ehca_err(&shca->ib_device,
611 "Cannot create AQP1 for port 1.");
0f248d9c 612 goto probe7;
fab97220
HS		 613 }
614 }
615
616 /* create AQP1 for port 2 */
617 if ((ehca_open_aqp1 == 1) && (shca->num_ports == 2)) {
618 shca->sport[1].port_state = IB_PORT_DOWN;
619 ret = ehca_create_aqp1(shca, 2);
620 if (ret) {
621 ehca_err(&shca->ib_device,
622 "Cannot create AQP1 for port 2.");
0f248d9c 623 goto probe8;
fab97220
HS		 624 }
625 }
626
627 ehca_create_device_sysfs(dev);
628
629 spin_lock(&shca_list_lock);
630 list_add(&shca->shca_list, &shca_list);
631 spin_unlock(&shca_list_lock);
632
633 return 0;
634
0f248d9c 635probe8:
fab97220
HS		 636 ret = ehca_destroy_aqp1(&shca->sport[0]);
637 if (ret)
638 ehca_err(&shca->ib_device,
639 "Cannot destroy AQP1 for port 1. ret=%x", ret);
640
0f248d9c
HNN		 641probe7:
642 ib_unregister_device(&shca->ib_device);
643
fab97220
HS		 644probe6:
645 ret = ehca_dereg_internal_maxmr(shca);
646 if (ret)
647 ehca_err(&shca->ib_device,
648 "Cannot destroy internal MR. ret=%x", ret);
649
650probe5:
651 ret = ehca_dealloc_pd(&shca->pd->ib_pd);
652 if (ret)
653 ehca_err(&shca->ib_device,
654 "Cannot destroy internal PD. ret=%x", ret);
655
656probe4:
657 ret = ehca_destroy_eq(shca, &shca->neq);
658 if (ret)
659 ehca_err(&shca->ib_device,
660 "Cannot destroy NEQ. ret=%x", ret);
661
662probe3:
663 ret = ehca_destroy_eq(shca, &shca->eq);
664 if (ret)
665 ehca_err(&shca->ib_device,
666 "Cannot destroy EQ. ret=%x", ret);
667
fab97220
HS		 668probe1:
669 ib_dealloc_device(&shca->ib_device);
670
671 return -EINVAL;
672}
673
674static int __devexit ehca_remove(struct ibmebus_dev *dev)
675{
676 struct ehca_shca *shca = dev->ofdev.dev.driver_data;
677 int ret;
678
679 ehca_remove_device_sysfs(dev);
680
681 if (ehca_open_aqp1 == 1) {
682 int i;
683 for (i = 0; i < shca->num_ports; i++) {
684 ret = ehca_destroy_aqp1(&shca->sport[i]);
685 if (ret)
686 ehca_err(&shca->ib_device,
687 "Cannot destroy AQP1 for port %x "
688 "ret=%x", ret, i);
689 }
690 }
691
692 ib_unregister_device(&shca->ib_device);
693
694 ret = ehca_dereg_internal_maxmr(shca);
695 if (ret)
696 ehca_err(&shca->ib_device,
697 "Cannot destroy internal MR. ret=%x", ret);
698
699 ret = ehca_dealloc_pd(&shca->pd->ib_pd);
700 if (ret)
701 ehca_err(&shca->ib_device,
702 "Cannot destroy internal PD. ret=%x", ret);
703
704 ret = ehca_destroy_eq(shca, &shca->eq);
705 if (ret)
706 ehca_err(&shca->ib_device, "Cannot destroy EQ. ret=%x", ret);
707
708 ret = ehca_destroy_eq(shca, &shca->neq);
709 if (ret)
710 ehca_err(&shca->ib_device, "Canot destroy NEQ. ret=%x", ret);
711
712 ib_dealloc_device(&shca->ib_device);
713
714 spin_lock(&shca_list_lock);
715 list_del(&shca->shca_list);
716 spin_unlock(&shca_list_lock);
717
718 return ret;
719}
720
721static struct of_device_id ehca_device_table[] =
722{
723 {
724 .name = "lhca",
725 .compatible = "IBM,lhca",
726 },
727 {},
728};
729
730static struct ibmebus_driver ehca_driver = {
731 .name = "ehca",
732 .id_table = ehca_device_table,
733 .probe = ehca_probe,
734 .remove = ehca_remove,
735};
736
737void ehca_poll_eqs(unsigned long data)
738{
739 struct ehca_shca *shca;
740
741 spin_lock(&shca_list_lock);
742 list_for_each_entry(shca, &shca_list, shca_list) {
743 if (shca->eq.is_initialized)
744 ehca_tasklet_eq((unsigned long)(void*)shca);
745 }
746 mod_timer(&poll_eqs_timer, jiffies + HZ);
747 spin_unlock(&shca_list_lock);
748}
749
750int __init ehca_module_init(void)
751{
752 int ret;
753
754 printk(KERN_INFO "eHCA Infiniband Device Driver "
0f248d9c 755 "(Rel.: SVNEHCA_0017)\n");
fab97220
HS		 756 idr_init(&ehca_qp_idr);
757 idr_init(&ehca_cq_idr);
758 spin_lock_init(&ehca_qp_idr_lock);
759 spin_lock_init(&ehca_cq_idr_lock);
760
761 INIT_LIST_HEAD(&shca_list);
762 spin_lock_init(&shca_list_lock);
763
764 if ((ret = ehca_create_comp_pool())) {
765 ehca_gen_err("Cannot create comp pool.");
766 return ret;
767 }
768
769 if ((ret = ehca_create_slab_caches())) {
770 ehca_gen_err("Cannot create SLAB caches");
771 ret = -ENOMEM;
772 goto module_init1;
773 }
774
775 if ((ret = ibmebus_register_driver(&ehca_driver))) {
776 ehca_gen_err("Cannot register eHCA device driver");
777 ret = -EINVAL;
778 goto module_init2;
779 }
780
781 ehca_create_driver_sysfs(&ehca_driver);
782
783 if (ehca_poll_all_eqs != 1) {
784 ehca_gen_err("WARNING!!!");
785 ehca_gen_err("It is possible to lose interrupts.");
786 } else {
787 init_timer(&poll_eqs_timer);
788 poll_eqs_timer.function = ehca_poll_eqs;
789 poll_eqs_timer.expires = jiffies + HZ;
790 add_timer(&poll_eqs_timer);
791 }
792
793 return 0;
794
795module_init2:
796 ehca_destroy_slab_caches();
797
798module_init1:
799 ehca_destroy_comp_pool();
800 return ret;
801};
802
803void __exit ehca_module_exit(void)
804{
805 if (ehca_poll_all_eqs == 1)
806 del_timer_sync(&poll_eqs_timer);
807
808 ehca_remove_driver_sysfs(&ehca_driver);
809 ibmebus_unregister_driver(&ehca_driver);
810
811 ehca_destroy_slab_caches();
812
813 ehca_destroy_comp_pool();
814
815 idr_destroy(&ehca_cq_idr);
816 idr_destroy(&ehca_qp_idr);
817};
818
819module_init(ehca_module_init);
820module_exit(ehca_module_exit);
Linux 6.x block layer and io_uring tree(s)