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-rw-r--r--drivers/infiniband/hw/ehca/ehca_main.c818
1 files changed, 818 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/ehca/ehca_main.c b/drivers/infiniband/hw/ehca/ehca_main.c
new file mode 100644
index 000000000000..2380994418a5
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+++ b/drivers/infiniband/hw/ehca/ehca_main.c
@@ -0,0 +1,818 @@
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");
52MODULE_VERSION("SVNEHCA_0016");
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
242int ehca_register_device(struct ehca_shca *shca)
243{
244 int ret;
245
246 ret = init_node_guid(shca);
247 if (ret)
248 return ret;
249
250 strlcpy(shca->ib_device.name, "ehca%d", IB_DEVICE_NAME_MAX);
251 shca->ib_device.owner = THIS_MODULE;
252
253 shca->ib_device.uverbs_abi_ver = 5;
254 shca->ib_device.uverbs_cmd_mask =
255 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
256 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
257 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
258 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
259 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
260 (1ull << IB_USER_VERBS_CMD_REG_MR) |
261 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
262 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
263 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
264 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
265 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
266 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
267 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
268 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
269 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
270 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST);
271
272 shca->ib_device.node_type = RDMA_NODE_IB_CA;
273 shca->ib_device.phys_port_cnt = shca->num_ports;
274 shca->ib_device.dma_device = &shca->ibmebus_dev->ofdev.dev;
275 shca->ib_device.query_device = ehca_query_device;
276 shca->ib_device.query_port = ehca_query_port;
277 shca->ib_device.query_gid = ehca_query_gid;
278 shca->ib_device.query_pkey = ehca_query_pkey;
279 /* shca->in_device.modify_device = ehca_modify_device */
280 shca->ib_device.modify_port = ehca_modify_port;
281 shca->ib_device.alloc_ucontext = ehca_alloc_ucontext;
282 shca->ib_device.dealloc_ucontext = ehca_dealloc_ucontext;
283 shca->ib_device.alloc_pd = ehca_alloc_pd;
284 shca->ib_device.dealloc_pd = ehca_dealloc_pd;
285 shca->ib_device.create_ah = ehca_create_ah;
286 /* shca->ib_device.modify_ah = ehca_modify_ah; */
287 shca->ib_device.query_ah = ehca_query_ah;
288 shca->ib_device.destroy_ah = ehca_destroy_ah;
289 shca->ib_device.create_qp = ehca_create_qp;
290 shca->ib_device.modify_qp = ehca_modify_qp;
291 shca->ib_device.query_qp = ehca_query_qp;
292 shca->ib_device.destroy_qp = ehca_destroy_qp;
293 shca->ib_device.post_send = ehca_post_send;
294 shca->ib_device.post_recv = ehca_post_recv;
295 shca->ib_device.create_cq = ehca_create_cq;
296 shca->ib_device.destroy_cq = ehca_destroy_cq;
297 shca->ib_device.resize_cq = ehca_resize_cq;
298 shca->ib_device.poll_cq = ehca_poll_cq;
299 /* shca->ib_device.peek_cq = ehca_peek_cq; */
300 shca->ib_device.req_notify_cq = ehca_req_notify_cq;
301 /* shca->ib_device.req_ncomp_notif = ehca_req_ncomp_notif; */
302 shca->ib_device.get_dma_mr = ehca_get_dma_mr;
303 shca->ib_device.reg_phys_mr = ehca_reg_phys_mr;
304 shca->ib_device.reg_user_mr = ehca_reg_user_mr;
305 shca->ib_device.query_mr = ehca_query_mr;
306 shca->ib_device.dereg_mr = ehca_dereg_mr;
307 shca->ib_device.rereg_phys_mr = ehca_rereg_phys_mr;
308 shca->ib_device.alloc_mw = ehca_alloc_mw;
309 shca->ib_device.bind_mw = ehca_bind_mw;
310 shca->ib_device.dealloc_mw = ehca_dealloc_mw;
311 shca->ib_device.alloc_fmr = ehca_alloc_fmr;
312 shca->ib_device.map_phys_fmr = ehca_map_phys_fmr;
313 shca->ib_device.unmap_fmr = ehca_unmap_fmr;
314 shca->ib_device.dealloc_fmr = ehca_dealloc_fmr;
315 shca->ib_device.attach_mcast = ehca_attach_mcast;
316 shca->ib_device.detach_mcast = ehca_detach_mcast;
317 /* shca->ib_device.process_mad = ehca_process_mad; */
318 shca->ib_device.mmap = ehca_mmap;
319
320 ret = ib_register_device(&shca->ib_device);
321 if (ret)
322 ehca_err(&shca->ib_device,
323 "ib_register_device() failed ret=%x", ret);
324
325 return ret;
326}
327
328static int ehca_create_aqp1(struct ehca_shca *shca, u32 port)
329{
330 struct ehca_sport *sport = &shca->sport[port - 1];
331 struct ib_cq *ibcq;
332 struct ib_qp *ibqp;
333 struct ib_qp_init_attr qp_init_attr;
334 int ret;
335
336 if (sport->ibcq_aqp1) {
337 ehca_err(&shca->ib_device, "AQP1 CQ is already created.");
338 return -EPERM;
339 }
340
341 ibcq = ib_create_cq(&shca->ib_device, NULL, NULL, (void*)(-1), 10);
342 if (IS_ERR(ibcq)) {
343 ehca_err(&shca->ib_device, "Cannot create AQP1 CQ.");
344 return PTR_ERR(ibcq);
345 }
346 sport->ibcq_aqp1 = ibcq;
347
348 if (sport->ibqp_aqp1) {
349 ehca_err(&shca->ib_device, "AQP1 QP is already created.");
350 ret = -EPERM;
351 goto create_aqp1;
352 }
353
354 memset(&qp_init_attr, 0, sizeof(struct ib_qp_init_attr));
355 qp_init_attr.send_cq = ibcq;
356 qp_init_attr.recv_cq = ibcq;
357 qp_init_attr.sq_sig_type = IB_SIGNAL_ALL_WR;
358 qp_init_attr.cap.max_send_wr = 100;
359 qp_init_attr.cap.max_recv_wr = 100;
360 qp_init_attr.cap.max_send_sge = 2;
361 qp_init_attr.cap.max_recv_sge = 1;
362 qp_init_attr.qp_type = IB_QPT_GSI;
363 qp_init_attr.port_num = port;
364 qp_init_attr.qp_context = NULL;
365 qp_init_attr.event_handler = NULL;
366 qp_init_attr.srq = NULL;
367
368 ibqp = ib_create_qp(&shca->pd->ib_pd, &qp_init_attr);
369 if (IS_ERR(ibqp)) {
370 ehca_err(&shca->ib_device, "Cannot create AQP1 QP.");
371 ret = PTR_ERR(ibqp);
372 goto create_aqp1;
373 }
374 sport->ibqp_aqp1 = ibqp;
375
376 return 0;
377
378create_aqp1:
379 ib_destroy_cq(sport->ibcq_aqp1);
380 return ret;
381}
382
383static int ehca_destroy_aqp1(struct ehca_sport *sport)
384{
385 int ret;
386
387 ret = ib_destroy_qp(sport->ibqp_aqp1);
388 if (ret) {
389 ehca_gen_err("Cannot destroy AQP1 QP. ret=%x", ret);
390 return ret;
391 }
392
393 ret = ib_destroy_cq(sport->ibcq_aqp1);
394 if (ret)
395 ehca_gen_err("Cannot destroy AQP1 CQ. ret=%x", ret);
396
397 return ret;
398}
399
400static ssize_t ehca_show_debug_level(struct device_driver *ddp, char *buf)
401{
402 return snprintf(buf, PAGE_SIZE, "%d\n",
403 ehca_debug_level);
404}
405
406static ssize_t ehca_store_debug_level(struct device_driver *ddp,
407 const char *buf, size_t count)
408{
409 int value = (*buf) - '0';
410 if (value >= 0 && value <= 9)
411 ehca_debug_level = value;
412 return 1;
413}
414
415DRIVER_ATTR(debug_level, S_IRUSR | S_IWUSR,
416 ehca_show_debug_level, ehca_store_debug_level);
417
418void ehca_create_driver_sysfs(struct ibmebus_driver *drv)
419{
420 driver_create_file(&drv->driver, &driver_attr_debug_level);
421}
422
423void ehca_remove_driver_sysfs(struct ibmebus_driver *drv)
424{
425 driver_remove_file(&drv->driver, &driver_attr_debug_level);
426}
427
428#define EHCA_RESOURCE_ATTR(name) \
429static ssize_t ehca_show_##name(struct device *dev, \
430 struct device_attribute *attr, \
431 char *buf) \
432{ \
433 struct ehca_shca *shca; \
434 struct hipz_query_hca *rblock; \
435 int data; \
436 \
437 shca = dev->driver_data; \
438 \
439 rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL); \
440 if (!rblock) { \
441 dev_err(dev, "Can't allocate rblock memory."); \
442 return 0; \
443 } \
444 \
445 if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) { \
446 dev_err(dev, "Can't query device properties"); \
447 kfree(rblock); \
448 return 0; \
449 } \
450 \
451 data = rblock->name; \
452 kfree(rblock); \
453 \
454 if ((strcmp(#name, "num_ports") == 0) && (ehca_nr_ports == 1)) \
455 return snprintf(buf, 256, "1\n"); \
456 else \
457 return snprintf(buf, 256, "%d\n", data); \
458 \
459} \
460static DEVICE_ATTR(name, S_IRUGO, ehca_show_##name, NULL);
461
462EHCA_RESOURCE_ATTR(num_ports);
463EHCA_RESOURCE_ATTR(hw_ver);
464EHCA_RESOURCE_ATTR(max_eq);
465EHCA_RESOURCE_ATTR(cur_eq);
466EHCA_RESOURCE_ATTR(max_cq);
467EHCA_RESOURCE_ATTR(cur_cq);
468EHCA_RESOURCE_ATTR(max_qp);
469EHCA_RESOURCE_ATTR(cur_qp);
470EHCA_RESOURCE_ATTR(max_mr);
471EHCA_RESOURCE_ATTR(cur_mr);
472EHCA_RESOURCE_ATTR(max_mw);
473EHCA_RESOURCE_ATTR(cur_mw);
474EHCA_RESOURCE_ATTR(max_pd);
475EHCA_RESOURCE_ATTR(max_ah);
476
477static ssize_t ehca_show_adapter_handle(struct device *dev,
478 struct device_attribute *attr,
479 char *buf)
480{
481 struct ehca_shca *shca = dev->driver_data;
482
483 return sprintf(buf, "%lx\n", shca->ipz_hca_handle.handle);
484
485}
486static DEVICE_ATTR(adapter_handle, S_IRUGO, ehca_show_adapter_handle, NULL);
487
488
489void ehca_create_device_sysfs(struct ibmebus_dev *dev)
490{
491 device_create_file(&dev->ofdev.dev, &dev_attr_adapter_handle);
492 device_create_file(&dev->ofdev.dev, &dev_attr_num_ports);
493 device_create_file(&dev->ofdev.dev, &dev_attr_hw_ver);
494 device_create_file(&dev->ofdev.dev, &dev_attr_max_eq);
495 device_create_file(&dev->ofdev.dev, &dev_attr_cur_eq);
496 device_create_file(&dev->ofdev.dev, &dev_attr_max_cq);
497 device_create_file(&dev->ofdev.dev, &dev_attr_cur_cq);
498 device_create_file(&dev->ofdev.dev, &dev_attr_max_qp);
499 device_create_file(&dev->ofdev.dev, &dev_attr_cur_qp);
500 device_create_file(&dev->ofdev.dev, &dev_attr_max_mr);
501 device_create_file(&dev->ofdev.dev, &dev_attr_cur_mr);
502 device_create_file(&dev->ofdev.dev, &dev_attr_max_mw);
503 device_create_file(&dev->ofdev.dev, &dev_attr_cur_mw);
504 device_create_file(&dev->ofdev.dev, &dev_attr_max_pd);
505 device_create_file(&dev->ofdev.dev, &dev_attr_max_ah);
506}
507
508void ehca_remove_device_sysfs(struct ibmebus_dev *dev)
509{
510 device_remove_file(&dev->ofdev.dev, &dev_attr_adapter_handle);
511 device_remove_file(&dev->ofdev.dev, &dev_attr_num_ports);
512 device_remove_file(&dev->ofdev.dev, &dev_attr_hw_ver);
513 device_remove_file(&dev->ofdev.dev, &dev_attr_max_eq);
514 device_remove_file(&dev->ofdev.dev, &dev_attr_cur_eq);
515 device_remove_file(&dev->ofdev.dev, &dev_attr_max_cq);
516 device_remove_file(&dev->ofdev.dev, &dev_attr_cur_cq);
517 device_remove_file(&dev->ofdev.dev, &dev_attr_max_qp);
518 device_remove_file(&dev->ofdev.dev, &dev_attr_cur_qp);
519 device_remove_file(&dev->ofdev.dev, &dev_attr_max_mr);
520 device_remove_file(&dev->ofdev.dev, &dev_attr_cur_mr);
521 device_remove_file(&dev->ofdev.dev, &dev_attr_max_mw);
522 device_remove_file(&dev->ofdev.dev, &dev_attr_cur_mw);
523 device_remove_file(&dev->ofdev.dev, &dev_attr_max_pd);
524 device_remove_file(&dev->ofdev.dev, &dev_attr_max_ah);
525}
526
527static int __devinit ehca_probe(struct ibmebus_dev *dev,
528 const struct of_device_id *id)
529{
530 struct ehca_shca *shca;
531 u64 *handle;
532 struct ib_pd *ibpd;
533 int ret;
534
535 handle = (u64 *)get_property(dev->ofdev.node, "ibm,hca-handle", NULL);
536 if (!handle) {
537 ehca_gen_err("Cannot get eHCA handle for adapter: %s.",
538 dev->ofdev.node->full_name);
539 return -ENODEV;
540 }
541
542 if (!(*handle)) {
543 ehca_gen_err("Wrong eHCA handle for adapter: %s.",
544 dev->ofdev.node->full_name);
545 return -ENODEV;
546 }
547
548 shca = (struct ehca_shca *)ib_alloc_device(sizeof(*shca));
549 if (!shca) {
550 ehca_gen_err("Cannot allocate shca memory.");
551 return -ENOMEM;
552 }
553
554 shca->ibmebus_dev = dev;
555 shca->ipz_hca_handle.handle = *handle;
556 dev->ofdev.dev.driver_data = shca;
557
558 ret = ehca_sense_attributes(shca);
559 if (ret < 0) {
560 ehca_gen_err("Cannot sense eHCA attributes.");
561 goto probe1;
562 }
563
564 ret = ehca_register_device(shca);
565 if (ret) {
566 ehca_gen_err("Cannot register Infiniband device");
567 goto probe1;
568 }
569
570 /* create event queues */
571 ret = ehca_create_eq(shca, &shca->eq, EHCA_EQ, 2048);
572 if (ret) {
573 ehca_err(&shca->ib_device, "Cannot create EQ.");
574 goto probe2;
575 }
576
577 ret = ehca_create_eq(shca, &shca->neq, EHCA_NEQ, 513);
578 if (ret) {
579 ehca_err(&shca->ib_device, "Cannot create NEQ.");
580 goto probe3;
581 }
582
583 /* create internal protection domain */
584 ibpd = ehca_alloc_pd(&shca->ib_device, (void*)(-1), NULL);
585 if (IS_ERR(ibpd)) {
586 ehca_err(&shca->ib_device, "Cannot create internal PD.");
587 ret = PTR_ERR(ibpd);
588 goto probe4;
589 }
590
591 shca->pd = container_of(ibpd, struct ehca_pd, ib_pd);
592 shca->pd->ib_pd.device = &shca->ib_device;
593
594 /* create internal max MR */
595 ret = ehca_reg_internal_maxmr(shca, shca->pd, &shca->maxmr);
596
597 if (ret) {
598 ehca_err(&shca->ib_device, "Cannot create internal MR ret=%x",
599 ret);
600 goto probe5;
601 }
602
603 /* create AQP1 for port 1 */
604 if (ehca_open_aqp1 == 1) {
605 shca->sport[0].port_state = IB_PORT_DOWN;
606 ret = ehca_create_aqp1(shca, 1);
607 if (ret) {
608 ehca_err(&shca->ib_device,
609 "Cannot create AQP1 for port 1.");
610 goto probe6;
611 }
612 }
613
614 /* create AQP1 for port 2 */
615 if ((ehca_open_aqp1 == 1) && (shca->num_ports == 2)) {
616 shca->sport[1].port_state = IB_PORT_DOWN;
617 ret = ehca_create_aqp1(shca, 2);
618 if (ret) {
619 ehca_err(&shca->ib_device,
620 "Cannot create AQP1 for port 2.");
621 goto probe7;
622 }
623 }
624
625 ehca_create_device_sysfs(dev);
626
627 spin_lock(&shca_list_lock);
628 list_add(&shca->shca_list, &shca_list);
629 spin_unlock(&shca_list_lock);
630
631 return 0;
632
633probe7:
634 ret = ehca_destroy_aqp1(&shca->sport[0]);
635 if (ret)
636 ehca_err(&shca->ib_device,
637 "Cannot destroy AQP1 for port 1. ret=%x", ret);
638
639probe6:
640 ret = ehca_dereg_internal_maxmr(shca);
641 if (ret)
642 ehca_err(&shca->ib_device,
643 "Cannot destroy internal MR. ret=%x", ret);
644
645probe5:
646 ret = ehca_dealloc_pd(&shca->pd->ib_pd);
647 if (ret)
648 ehca_err(&shca->ib_device,
649 "Cannot destroy internal PD. ret=%x", ret);
650
651probe4:
652 ret = ehca_destroy_eq(shca, &shca->neq);
653 if (ret)
654 ehca_err(&shca->ib_device,
655 "Cannot destroy NEQ. ret=%x", ret);
656
657probe3:
658 ret = ehca_destroy_eq(shca, &shca->eq);
659 if (ret)
660 ehca_err(&shca->ib_device,
661 "Cannot destroy EQ. ret=%x", ret);
662
663probe2:
664 ib_unregister_device(&shca->ib_device);
665
666probe1:
667 ib_dealloc_device(&shca->ib_device);
668
669 return -EINVAL;
670}
671
672static int __devexit ehca_remove(struct ibmebus_dev *dev)
673{
674 struct ehca_shca *shca = dev->ofdev.dev.driver_data;
675 int ret;
676
677 ehca_remove_device_sysfs(dev);
678
679 if (ehca_open_aqp1 == 1) {
680 int i;
681 for (i = 0; i < shca->num_ports; i++) {
682 ret = ehca_destroy_aqp1(&shca->sport[i]);
683 if (ret)
684 ehca_err(&shca->ib_device,
685 "Cannot destroy AQP1 for port %x "
686 "ret=%x", ret, i);
687 }
688 }
689
690 ib_unregister_device(&shca->ib_device);
691
692 ret = ehca_dereg_internal_maxmr(shca);
693 if (ret)
694 ehca_err(&shca->ib_device,
695 "Cannot destroy internal MR. ret=%x", ret);
696
697 ret = ehca_dealloc_pd(&shca->pd->ib_pd);
698 if (ret)
699 ehca_err(&shca->ib_device,
700 "Cannot destroy internal PD. ret=%x", ret);
701
702 ret = ehca_destroy_eq(shca, &shca->eq);
703 if (ret)
704 ehca_err(&shca->ib_device, "Cannot destroy EQ. ret=%x", ret);
705
706 ret = ehca_destroy_eq(shca, &shca->neq);
707 if (ret)
708 ehca_err(&shca->ib_device, "Canot destroy NEQ. ret=%x", ret);
709
710 ib_dealloc_device(&shca->ib_device);
711
712 spin_lock(&shca_list_lock);
713 list_del(&shca->shca_list);
714 spin_unlock(&shca_list_lock);
715
716 return ret;
717}
718
719static struct of_device_id ehca_device_table[] =
720{
721 {
722 .name = "lhca",
723 .compatible = "IBM,lhca",
724 },
725 {},
726};
727
728static struct ibmebus_driver ehca_driver = {
729 .name = "ehca",
730 .id_table = ehca_device_table,
731 .probe = ehca_probe,
732 .remove = ehca_remove,
733};
734
735void ehca_poll_eqs(unsigned long data)
736{
737 struct ehca_shca *shca;
738
739 spin_lock(&shca_list_lock);
740 list_for_each_entry(shca, &shca_list, shca_list) {
741 if (shca->eq.is_initialized)
742 ehca_tasklet_eq((unsigned long)(void*)shca);
743 }
744 mod_timer(&poll_eqs_timer, jiffies + HZ);
745 spin_unlock(&shca_list_lock);
746}
747
748int __init ehca_module_init(void)
749{
750 int ret;
751
752 printk(KERN_INFO "eHCA Infiniband Device Driver "
753 "(Rel.: SVNEHCA_0016)\n");
754 idr_init(&ehca_qp_idr);
755 idr_init(&ehca_cq_idr);
756 spin_lock_init(&ehca_qp_idr_lock);
757 spin_lock_init(&ehca_cq_idr_lock);
758
759 INIT_LIST_HEAD(&shca_list);
760 spin_lock_init(&shca_list_lock);
761
762 if ((ret = ehca_create_comp_pool())) {
763 ehca_gen_err("Cannot create comp pool.");
764 return ret;
765 }
766
767 if ((ret = ehca_create_slab_caches())) {
768 ehca_gen_err("Cannot create SLAB caches");
769 ret = -ENOMEM;
770 goto module_init1;
771 }
772
773 if ((ret = ibmebus_register_driver(&ehca_driver))) {
774 ehca_gen_err("Cannot register eHCA device driver");
775 ret = -EINVAL;
776 goto module_init2;
777 }
778
779 ehca_create_driver_sysfs(&ehca_driver);
780
781 if (ehca_poll_all_eqs != 1) {
782 ehca_gen_err("WARNING!!!");
783 ehca_gen_err("It is possible to lose interrupts.");
784 } else {
785 init_timer(&poll_eqs_timer);
786 poll_eqs_timer.function = ehca_poll_eqs;
787 poll_eqs_timer.expires = jiffies + HZ;
788 add_timer(&poll_eqs_timer);
789 }
790
791 return 0;
792
793module_init2:
794 ehca_destroy_slab_caches();
795
796module_init1:
797 ehca_destroy_comp_pool();
798 return ret;
799};
800
801void __exit ehca_module_exit(void)
802{
803 if (ehca_poll_all_eqs == 1)
804 del_timer_sync(&poll_eqs_timer);
805
806 ehca_remove_driver_sysfs(&ehca_driver);
807 ibmebus_unregister_driver(&ehca_driver);
808
809 ehca_destroy_slab_caches();
810
811 ehca_destroy_comp_pool();
812
813 idr_destroy(&ehca_cq_idr);
814 idr_destroy(&ehca_qp_idr);
815};
816
817module_init(ehca_module_init);
818module_exit(ehca_module_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-22 12:38:02 -0500