]> git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blob - drivers/infiniband/hw/ehca/ehca_main.c
projects / mirror_ubuntu-zesty-kernel.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
mm: Remove slab destructors from kmem_cache_create().
[mirror_ubuntu-zesty-kernel.git] / 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_0023");
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 int ehca_scaling_code = 0;
66
67 module_param_named(open_aqp1, ehca_open_aqp1, int, 0);
68 module_param_named(debug_level, ehca_debug_level, int, 0);
69 module_param_named(hw_level, ehca_hw_level, int, 0);
70 module_param_named(nr_ports, ehca_nr_ports, int, 0);
71 module_param_named(use_hp_mr, ehca_use_hp_mr, int, 0);
72 module_param_named(port_act_time, ehca_port_act_time, int, 0);
73 module_param_named(poll_all_eqs, ehca_poll_all_eqs, int, 0);
74 module_param_named(static_rate, ehca_static_rate, int, 0);
75 module_param_named(scaling_code, ehca_scaling_code, int, 0);
76
77 MODULE_PARM_DESC(open_aqp1,
78 "AQP1 on startup (0: no (default), 1: yes)");
79 MODULE_PARM_DESC(debug_level,
80 "debug level"
81 " (0: no debug traces (default), 1: with debug traces)");
82 MODULE_PARM_DESC(hw_level,
83 "hardware level"
84 " (0: autosensing (default), 1: v. 0.20, 2: v. 0.21)");
85 MODULE_PARM_DESC(nr_ports,
86 "number of connected ports (default: 2)");
87 MODULE_PARM_DESC(use_hp_mr,
88 "high performance MRs (0: no (default), 1: yes)");
89 MODULE_PARM_DESC(port_act_time,
90 "time to wait for port activation (default: 30 sec)");
91 MODULE_PARM_DESC(poll_all_eqs,
92 "polls all event queues periodically"
93 " (0: no, 1: yes (default))");
94 MODULE_PARM_DESC(static_rate,
95 "set permanent static rate (default: disabled)");
96 MODULE_PARM_DESC(scaling_code,
97 "set scaling code (0: disabled/default, 1: enabled)");
98
99 DEFINE_RWLOCK(ehca_qp_idr_lock);
100 DEFINE_RWLOCK(ehca_cq_idr_lock);
101 DEFINE_IDR(ehca_qp_idr);
102 DEFINE_IDR(ehca_cq_idr);
103
104 static LIST_HEAD(shca_list); /* list of all registered ehcas */
105 static DEFINE_SPINLOCK(shca_list_lock);
106
107 static struct timer_list poll_eqs_timer;
108
109 #ifdef CONFIG_PPC_64K_PAGES
110 static struct kmem_cache *ctblk_cache;
111
112 void *ehca_alloc_fw_ctrlblock(gfp_t flags)
113 {
114 void *ret = kmem_cache_zalloc(ctblk_cache, flags);
115 if (!ret)
116 ehca_gen_err("Out of memory for ctblk");
117 return ret;
118 }
119
120 void ehca_free_fw_ctrlblock(void *ptr)
121 {
122 if (ptr)
123 kmem_cache_free(ctblk_cache, ptr);
124
125 }
126 #endif
127
128 static int ehca_create_slab_caches(void)
129 {
130 int ret;
131
132 ret = ehca_init_pd_cache();
133 if (ret) {
134 ehca_gen_err("Cannot create PD SLAB cache.");
135 return ret;
136 }
137
138 ret = ehca_init_cq_cache();
139 if (ret) {
140 ehca_gen_err("Cannot create CQ SLAB cache.");
141 goto create_slab_caches2;
142 }
143
144 ret = ehca_init_qp_cache();
145 if (ret) {
146 ehca_gen_err("Cannot create QP SLAB cache.");
147 goto create_slab_caches3;
148 }
149
150 ret = ehca_init_av_cache();
151 if (ret) {
152 ehca_gen_err("Cannot create AV SLAB cache.");
153 goto create_slab_caches4;
154 }
155
156 ret = ehca_init_mrmw_cache();
157 if (ret) {
158 ehca_gen_err("Cannot create MR&MW SLAB cache.");
159 goto create_slab_caches5;
160 }
161
162 #ifdef CONFIG_PPC_64K_PAGES
163 ctblk_cache = kmem_cache_create("ehca_cache_ctblk",
164 EHCA_PAGESIZE, H_CB_ALIGNMENT,
165 SLAB_HWCACHE_ALIGN,
166 NULL);
167 if (!ctblk_cache) {
168 ehca_gen_err("Cannot create ctblk SLAB cache.");
169 ehca_cleanup_mrmw_cache();
170 goto create_slab_caches5;
171 }
172 #endif
173 return 0;
174
175 create_slab_caches5:
176 ehca_cleanup_av_cache();
177
178 create_slab_caches4:
179 ehca_cleanup_qp_cache();
180
181 create_slab_caches3:
182 ehca_cleanup_cq_cache();
183
184 create_slab_caches2:
185 ehca_cleanup_pd_cache();
186
187 return ret;
188 }
189
190 static void ehca_destroy_slab_caches(void)
191 {
192 ehca_cleanup_mrmw_cache();
193 ehca_cleanup_av_cache();
194 ehca_cleanup_qp_cache();
195 ehca_cleanup_cq_cache();
196 ehca_cleanup_pd_cache();
197 #ifdef CONFIG_PPC_64K_PAGES
198 if (ctblk_cache)
199 kmem_cache_destroy(ctblk_cache);
200 #endif
201 }
202
203 #define EHCA_HCAAVER EHCA_BMASK_IBM(32, 39)
204 #define EHCA_REVID EHCA_BMASK_IBM(40, 63)
205
206 static struct cap_descr {
207 u64 mask;
208 char *descr;
209 } hca_cap_descr[] = {
210 { HCA_CAP_AH_PORT_NR_CHECK, "HCA_CAP_AH_PORT_NR_CHECK" },
211 { HCA_CAP_ATOMIC, "HCA_CAP_ATOMIC" },
212 { HCA_CAP_AUTO_PATH_MIG, "HCA_CAP_AUTO_PATH_MIG" },
213 { HCA_CAP_BAD_P_KEY_CTR, "HCA_CAP_BAD_P_KEY_CTR" },
214 { HCA_CAP_SQD_RTS_PORT_CHANGE, "HCA_CAP_SQD_RTS_PORT_CHANGE" },
215 { HCA_CAP_CUR_QP_STATE_MOD, "HCA_CAP_CUR_QP_STATE_MOD" },
216 { HCA_CAP_INIT_TYPE, "HCA_CAP_INIT_TYPE" },
217 { HCA_CAP_PORT_ACTIVE_EVENT, "HCA_CAP_PORT_ACTIVE_EVENT" },
218 { HCA_CAP_Q_KEY_VIOL_CTR, "HCA_CAP_Q_KEY_VIOL_CTR" },
219 { HCA_CAP_WQE_RESIZE, "HCA_CAP_WQE_RESIZE" },
220 { HCA_CAP_RAW_PACKET_MCAST, "HCA_CAP_RAW_PACKET_MCAST" },
221 { HCA_CAP_SHUTDOWN_PORT, "HCA_CAP_SHUTDOWN_PORT" },
222 { HCA_CAP_RC_LL_QP, "HCA_CAP_RC_LL_QP" },
223 { HCA_CAP_SRQ, "HCA_CAP_SRQ" },
224 { HCA_CAP_UD_LL_QP, "HCA_CAP_UD_LL_QP" },
225 { HCA_CAP_RESIZE_MR, "HCA_CAP_RESIZE_MR" },
226 { HCA_CAP_MINI_QP, "HCA_CAP_MINI_QP" },
227 };
228
229 int ehca_sense_attributes(struct ehca_shca *shca)
230 {
231 int i, ret = 0;
232 u64 h_ret;
233 struct hipz_query_hca *rblock;
234 struct hipz_query_port *port;
235
236 rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
237 if (!rblock) {
238 ehca_gen_err("Cannot allocate rblock memory.");
239 return -ENOMEM;
240 }
241
242 h_ret = hipz_h_query_hca(shca->ipz_hca_handle, rblock);
243 if (h_ret != H_SUCCESS) {
244 ehca_gen_err("Cannot query device properties. h_ret=%lx",
245 h_ret);
246 ret = -EPERM;
247 goto sense_attributes1;
248 }
249
250 if (ehca_nr_ports == 1)
251 shca->num_ports = 1;
252 else
253 shca->num_ports = (u8)rblock->num_ports;
254
255 ehca_gen_dbg(" ... found %x ports", rblock->num_ports);
256
257 if (ehca_hw_level == 0) {
258 u32 hcaaver;
259 u32 revid;
260
261 hcaaver = EHCA_BMASK_GET(EHCA_HCAAVER, rblock->hw_ver);
262 revid = EHCA_BMASK_GET(EHCA_REVID, rblock->hw_ver);
263
264 ehca_gen_dbg(" ... hardware version=%x:%x", hcaaver, revid);
265
266 if (hcaaver == 1) {
267 if (revid <= 3)
268 shca->hw_level = 0x10 | (revid + 1);
269 else
270 shca->hw_level = 0x14;
271 } else if (hcaaver == 2) {
272 if (revid == 0)
273 shca->hw_level = 0x21;
274 else if (revid == 0x10)
275 shca->hw_level = 0x22;
276 else if (revid == 0x20 || revid == 0x21)
277 shca->hw_level = 0x23;
278 }
279
280 if (!shca->hw_level) {
281 ehca_gen_warn("unknown hardware version"
282 " - assuming default level");
283 shca->hw_level = 0x22;
284 }
285 } else
286 shca->hw_level = ehca_hw_level;
287 ehca_gen_dbg(" ... hardware level=%x", shca->hw_level);
288
289 shca->sport[0].rate = IB_RATE_30_GBPS;
290 shca->sport[1].rate = IB_RATE_30_GBPS;
291
292 shca->hca_cap = rblock->hca_cap_indicators;
293 ehca_gen_dbg(" ... HCA capabilities:");
294 for (i = 0; i < ARRAY_SIZE(hca_cap_descr); i++)
295 if (EHCA_BMASK_GET(hca_cap_descr[i].mask, shca->hca_cap))
296 ehca_gen_dbg(" %s", hca_cap_descr[i].descr);
297
298 port = (struct hipz_query_port *)rblock;
299 h_ret = hipz_h_query_port(shca->ipz_hca_handle, 1, port);
300 if (h_ret != H_SUCCESS) {
301 ehca_gen_err("Cannot query port properties. h_ret=%lx",
302 h_ret);
303 ret = -EPERM;
304 goto sense_attributes1;
305 }
306
307 shca->max_mtu = port->max_mtu;
308
309 sense_attributes1:
310 ehca_free_fw_ctrlblock(rblock);
311 return ret;
312 }
313
314 static int init_node_guid(struct ehca_shca *shca)
315 {
316 int ret = 0;
317 struct hipz_query_hca *rblock;
318
319 rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
320 if (!rblock) {
321 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
322 return -ENOMEM;
323 }
324
325 if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) {
326 ehca_err(&shca->ib_device, "Can't query device properties");
327 ret = -EINVAL;
328 goto init_node_guid1;
329 }
330
331 memcpy(&shca->ib_device.node_guid, &rblock->node_guid, sizeof(u64));
332
333 init_node_guid1:
334 ehca_free_fw_ctrlblock(rblock);
335 return ret;
336 }
337
338 int ehca_init_device(struct ehca_shca *shca)
339 {
340 int ret;
341
342 ret = init_node_guid(shca);
343 if (ret)
344 return ret;
345
346 strlcpy(shca->ib_device.name, "ehca%d", IB_DEVICE_NAME_MAX);
347 shca->ib_device.owner = THIS_MODULE;
348
349 shca->ib_device.uverbs_abi_ver = 7;
350 shca->ib_device.uverbs_cmd_mask =
351 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
352 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
353 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
354 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
355 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
356 (1ull << IB_USER_VERBS_CMD_REG_MR) |
357 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
358 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
359 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
360 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
361 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
362 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
363 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
364 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
365 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
366 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST);
367
368 shca->ib_device.node_type = RDMA_NODE_IB_CA;
369 shca->ib_device.phys_port_cnt = shca->num_ports;
370 shca->ib_device.num_comp_vectors = 1;
371 shca->ib_device.dma_device = &shca->ibmebus_dev->ofdev.dev;
372 shca->ib_device.query_device = ehca_query_device;
373 shca->ib_device.query_port = ehca_query_port;
374 shca->ib_device.query_gid = ehca_query_gid;
375 shca->ib_device.query_pkey = ehca_query_pkey;
376 /* shca->in_device.modify_device = ehca_modify_device */
377 shca->ib_device.modify_port = ehca_modify_port;
378 shca->ib_device.alloc_ucontext = ehca_alloc_ucontext;
379 shca->ib_device.dealloc_ucontext = ehca_dealloc_ucontext;
380 shca->ib_device.alloc_pd = ehca_alloc_pd;
381 shca->ib_device.dealloc_pd = ehca_dealloc_pd;
382 shca->ib_device.create_ah = ehca_create_ah;
383 /* shca->ib_device.modify_ah = ehca_modify_ah; */
384 shca->ib_device.query_ah = ehca_query_ah;
385 shca->ib_device.destroy_ah = ehca_destroy_ah;
386 shca->ib_device.create_qp = ehca_create_qp;
387 shca->ib_device.modify_qp = ehca_modify_qp;
388 shca->ib_device.query_qp = ehca_query_qp;
389 shca->ib_device.destroy_qp = ehca_destroy_qp;
390 shca->ib_device.post_send = ehca_post_send;
391 shca->ib_device.post_recv = ehca_post_recv;
392 shca->ib_device.create_cq = ehca_create_cq;
393 shca->ib_device.destroy_cq = ehca_destroy_cq;
394 shca->ib_device.resize_cq = ehca_resize_cq;
395 shca->ib_device.poll_cq = ehca_poll_cq;
396 /* shca->ib_device.peek_cq = ehca_peek_cq; */
397 shca->ib_device.req_notify_cq = ehca_req_notify_cq;
398 /* shca->ib_device.req_ncomp_notif = ehca_req_ncomp_notif; */
399 shca->ib_device.get_dma_mr = ehca_get_dma_mr;
400 shca->ib_device.reg_phys_mr = ehca_reg_phys_mr;
401 shca->ib_device.reg_user_mr = ehca_reg_user_mr;
402 shca->ib_device.query_mr = ehca_query_mr;
403 shca->ib_device.dereg_mr = ehca_dereg_mr;
404 shca->ib_device.rereg_phys_mr = ehca_rereg_phys_mr;
405 shca->ib_device.alloc_mw = ehca_alloc_mw;
406 shca->ib_device.bind_mw = ehca_bind_mw;
407 shca->ib_device.dealloc_mw = ehca_dealloc_mw;
408 shca->ib_device.alloc_fmr = ehca_alloc_fmr;
409 shca->ib_device.map_phys_fmr = ehca_map_phys_fmr;
410 shca->ib_device.unmap_fmr = ehca_unmap_fmr;
411 shca->ib_device.dealloc_fmr = ehca_dealloc_fmr;
412 shca->ib_device.attach_mcast = ehca_attach_mcast;
413 shca->ib_device.detach_mcast = ehca_detach_mcast;
414 /* shca->ib_device.process_mad = ehca_process_mad; */
415 shca->ib_device.mmap = ehca_mmap;
416
417 if (EHCA_BMASK_GET(HCA_CAP_SRQ, shca->hca_cap)) {
418 shca->ib_device.uverbs_cmd_mask |=
419 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
420 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
421 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
422 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
423
424 shca->ib_device.create_srq = ehca_create_srq;
425 shca->ib_device.modify_srq = ehca_modify_srq;
426 shca->ib_device.query_srq = ehca_query_srq;
427 shca->ib_device.destroy_srq = ehca_destroy_srq;
428 shca->ib_device.post_srq_recv = ehca_post_srq_recv;
429 }
430
431 return ret;
432 }
433
434 static int ehca_create_aqp1(struct ehca_shca *shca, u32 port)
435 {
436 struct ehca_sport *sport = &shca->sport[port - 1];
437 struct ib_cq *ibcq;
438 struct ib_qp *ibqp;
439 struct ib_qp_init_attr qp_init_attr;
440 int ret;
441
442 if (sport->ibcq_aqp1) {
443 ehca_err(&shca->ib_device, "AQP1 CQ is already created.");
444 return -EPERM;
445 }
446
447 ibcq = ib_create_cq(&shca->ib_device, NULL, NULL, (void *)(-1), 10, 0);
448 if (IS_ERR(ibcq)) {
449 ehca_err(&shca->ib_device, "Cannot create AQP1 CQ.");
450 return PTR_ERR(ibcq);
451 }
452 sport->ibcq_aqp1 = ibcq;
453
454 if (sport->ibqp_aqp1) {
455 ehca_err(&shca->ib_device, "AQP1 QP is already created.");
456 ret = -EPERM;
457 goto create_aqp1;
458 }
459
460 memset(&qp_init_attr, 0, sizeof(struct ib_qp_init_attr));
461 qp_init_attr.send_cq = ibcq;
462 qp_init_attr.recv_cq = ibcq;
463 qp_init_attr.sq_sig_type = IB_SIGNAL_ALL_WR;
464 qp_init_attr.cap.max_send_wr = 100;
465 qp_init_attr.cap.max_recv_wr = 100;
466 qp_init_attr.cap.max_send_sge = 2;
467 qp_init_attr.cap.max_recv_sge = 1;
468 qp_init_attr.qp_type = IB_QPT_GSI;
469 qp_init_attr.port_num = port;
470 qp_init_attr.qp_context = NULL;
471 qp_init_attr.event_handler = NULL;
472 qp_init_attr.srq = NULL;
473
474 ibqp = ib_create_qp(&shca->pd->ib_pd, &qp_init_attr);
475 if (IS_ERR(ibqp)) {
476 ehca_err(&shca->ib_device, "Cannot create AQP1 QP.");
477 ret = PTR_ERR(ibqp);
478 goto create_aqp1;
479 }
480 sport->ibqp_aqp1 = ibqp;
481
482 return 0;
483
484 create_aqp1:
485 ib_destroy_cq(sport->ibcq_aqp1);
486 return ret;
487 }
488
489 static int ehca_destroy_aqp1(struct ehca_sport *sport)
490 {
491 int ret;
492
493 ret = ib_destroy_qp(sport->ibqp_aqp1);
494 if (ret) {
495 ehca_gen_err("Cannot destroy AQP1 QP. ret=%x", ret);
496 return ret;
497 }
498
499 ret = ib_destroy_cq(sport->ibcq_aqp1);
500 if (ret)
501 ehca_gen_err("Cannot destroy AQP1 CQ. ret=%x", ret);
502
503 return ret;
504 }
505
506 static ssize_t ehca_show_debug_level(struct device_driver *ddp, char *buf)
507 {
508 return snprintf(buf, PAGE_SIZE, "%d\n",
509 ehca_debug_level);
510 }
511
512 static ssize_t ehca_store_debug_level(struct device_driver *ddp,
513 const char *buf, size_t count)
514 {
515 int value = (*buf) - '0';
516 if (value >= 0 && value <= 9)
517 ehca_debug_level = value;
518 return 1;
519 }
520
521 DRIVER_ATTR(debug_level, S_IRUSR | S_IWUSR,
522 ehca_show_debug_level, ehca_store_debug_level);
523
524 static struct attribute *ehca_drv_attrs[] = {
525 &driver_attr_debug_level.attr,
526 NULL
527 };
528
529 static struct attribute_group ehca_drv_attr_grp = {
530 .attrs = ehca_drv_attrs
531 };
532
533 #define EHCA_RESOURCE_ATTR(name) \
534 static ssize_t ehca_show_##name(struct device *dev, \
535 struct device_attribute *attr, \
536 char *buf) \
537 { \
538 struct ehca_shca *shca; \
539 struct hipz_query_hca *rblock; \
540 int data; \
541 \
542 shca = dev->driver_data; \
543 \
544 rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); \
545 if (!rblock) { \
546 dev_err(dev, "Can't allocate rblock memory."); \
547 return 0; \
548 } \
549 \
550 if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) { \
551 dev_err(dev, "Can't query device properties"); \
552 ehca_free_fw_ctrlblock(rblock); \
553 return 0; \
554 } \
555 \
556 data = rblock->name; \
557 ehca_free_fw_ctrlblock(rblock); \
558 \
559 if ((strcmp(#name, "num_ports") == 0) && (ehca_nr_ports == 1)) \
560 return snprintf(buf, 256, "1\n"); \
561 else \
562 return snprintf(buf, 256, "%d\n", data); \
563 \
564 } \
565 static DEVICE_ATTR(name, S_IRUGO, ehca_show_##name, NULL);
566
567 EHCA_RESOURCE_ATTR(num_ports);
568 EHCA_RESOURCE_ATTR(hw_ver);
569 EHCA_RESOURCE_ATTR(max_eq);
570 EHCA_RESOURCE_ATTR(cur_eq);
571 EHCA_RESOURCE_ATTR(max_cq);
572 EHCA_RESOURCE_ATTR(cur_cq);
573 EHCA_RESOURCE_ATTR(max_qp);
574 EHCA_RESOURCE_ATTR(cur_qp);
575 EHCA_RESOURCE_ATTR(max_mr);
576 EHCA_RESOURCE_ATTR(cur_mr);
577 EHCA_RESOURCE_ATTR(max_mw);
578 EHCA_RESOURCE_ATTR(cur_mw);
579 EHCA_RESOURCE_ATTR(max_pd);
580 EHCA_RESOURCE_ATTR(max_ah);
581
582 static ssize_t ehca_show_adapter_handle(struct device *dev,
583 struct device_attribute *attr,
584 char *buf)
585 {
586 struct ehca_shca *shca = dev->driver_data;
587
588 return sprintf(buf, "%lx\n", shca->ipz_hca_handle.handle);
589
590 }
591 static DEVICE_ATTR(adapter_handle, S_IRUGO, ehca_show_adapter_handle, NULL);
592
593 static struct attribute *ehca_dev_attrs[] = {
594 &dev_attr_adapter_handle.attr,
595 &dev_attr_num_ports.attr,
596 &dev_attr_hw_ver.attr,
597 &dev_attr_max_eq.attr,
598 &dev_attr_cur_eq.attr,
599 &dev_attr_max_cq.attr,
600 &dev_attr_cur_cq.attr,
601 &dev_attr_max_qp.attr,
602 &dev_attr_cur_qp.attr,
603 &dev_attr_max_mr.attr,
604 &dev_attr_cur_mr.attr,
605 &dev_attr_max_mw.attr,
606 &dev_attr_cur_mw.attr,
607 &dev_attr_max_pd.attr,
608 &dev_attr_max_ah.attr,
609 NULL
610 };
611
612 static struct attribute_group ehca_dev_attr_grp = {
613 .attrs = ehca_dev_attrs
614 };
615
616 static int __devinit ehca_probe(struct ibmebus_dev *dev,
617 const struct of_device_id *id)
618 {
619 struct ehca_shca *shca;
620 const u64 *handle;
621 struct ib_pd *ibpd;
622 int ret;
623
624 handle = of_get_property(dev->ofdev.node, "ibm,hca-handle", NULL);
625 if (!handle) {
626 ehca_gen_err("Cannot get eHCA handle for adapter: %s.",
627 dev->ofdev.node->full_name);
628 return -ENODEV;
629 }
630
631 if (!(*handle)) {
632 ehca_gen_err("Wrong eHCA handle for adapter: %s.",
633 dev->ofdev.node->full_name);
634 return -ENODEV;
635 }
636
637 shca = (struct ehca_shca *)ib_alloc_device(sizeof(*shca));
638 if (!shca) {
639 ehca_gen_err("Cannot allocate shca memory.");
640 return -ENOMEM;
641 }
642 mutex_init(&shca->modify_mutex);
643
644 shca->ibmebus_dev = dev;
645 shca->ipz_hca_handle.handle = *handle;
646 dev->ofdev.dev.driver_data = shca;
647
648 ret = ehca_sense_attributes(shca);
649 if (ret < 0) {
650 ehca_gen_err("Cannot sense eHCA attributes.");
651 goto probe1;
652 }
653
654 ret = ehca_init_device(shca);
655 if (ret) {
656 ehca_gen_err("Cannot init ehca device struct");
657 goto probe1;
658 }
659
660 /* create event queues */
661 ret = ehca_create_eq(shca, &shca->eq, EHCA_EQ, 2048);
662 if (ret) {
663 ehca_err(&shca->ib_device, "Cannot create EQ.");
664 goto probe1;
665 }
666
667 ret = ehca_create_eq(shca, &shca->neq, EHCA_NEQ, 513);
668 if (ret) {
669 ehca_err(&shca->ib_device, "Cannot create NEQ.");
670 goto probe3;
671 }
672
673 /* create internal protection domain */
674 ibpd = ehca_alloc_pd(&shca->ib_device, (void *)(-1), NULL);
675 if (IS_ERR(ibpd)) {
676 ehca_err(&shca->ib_device, "Cannot create internal PD.");
677 ret = PTR_ERR(ibpd);
678 goto probe4;
679 }
680
681 shca->pd = container_of(ibpd, struct ehca_pd, ib_pd);
682 shca->pd->ib_pd.device = &shca->ib_device;
683
684 /* create internal max MR */
685 ret = ehca_reg_internal_maxmr(shca, shca->pd, &shca->maxmr);
686
687 if (ret) {
688 ehca_err(&shca->ib_device, "Cannot create internal MR ret=%x",
689 ret);
690 goto probe5;
691 }
692
693 ret = ib_register_device(&shca->ib_device);
694 if (ret) {
695 ehca_err(&shca->ib_device,
696 "ib_register_device() failed ret=%x", ret);
697 goto probe6;
698 }
699
700 /* create AQP1 for port 1 */
701 if (ehca_open_aqp1 == 1) {
702 shca->sport[0].port_state = IB_PORT_DOWN;
703 ret = ehca_create_aqp1(shca, 1);
704 if (ret) {
705 ehca_err(&shca->ib_device,
706 "Cannot create AQP1 for port 1.");
707 goto probe7;
708 }
709 }
710
711 /* create AQP1 for port 2 */
712 if ((ehca_open_aqp1 == 1) && (shca->num_ports == 2)) {
713 shca->sport[1].port_state = IB_PORT_DOWN;
714 ret = ehca_create_aqp1(shca, 2);
715 if (ret) {
716 ehca_err(&shca->ib_device,
717 "Cannot create AQP1 for port 2.");
718 goto probe8;
719 }
720 }
721
722 ret = sysfs_create_group(&dev->ofdev.dev.kobj, &ehca_dev_attr_grp);
723 if (ret) /* only complain; we can live without attributes */
724 ehca_err(&shca->ib_device,
725 "Cannot create device attributes ret=%d", ret);
726
727 spin_lock(&shca_list_lock);
728 list_add(&shca->shca_list, &shca_list);
729 spin_unlock(&shca_list_lock);
730
731 return 0;
732
733 probe8:
734 ret = ehca_destroy_aqp1(&shca->sport[0]);
735 if (ret)
736 ehca_err(&shca->ib_device,
737 "Cannot destroy AQP1 for port 1. ret=%x", ret);
738
739 probe7:
740 ib_unregister_device(&shca->ib_device);
741
742 probe6:
743 ret = ehca_dereg_internal_maxmr(shca);
744 if (ret)
745 ehca_err(&shca->ib_device,
746 "Cannot destroy internal MR. ret=%x", ret);
747
748 probe5:
749 ret = ehca_dealloc_pd(&shca->pd->ib_pd);
750 if (ret)
751 ehca_err(&shca->ib_device,
752 "Cannot destroy internal PD. ret=%x", ret);
753
754 probe4:
755 ret = ehca_destroy_eq(shca, &shca->neq);
756 if (ret)
757 ehca_err(&shca->ib_device,
758 "Cannot destroy NEQ. ret=%x", ret);
759
760 probe3:
761 ret = ehca_destroy_eq(shca, &shca->eq);
762 if (ret)
763 ehca_err(&shca->ib_device,
764 "Cannot destroy EQ. ret=%x", ret);
765
766 probe1:
767 ib_dealloc_device(&shca->ib_device);
768
769 return -EINVAL;
770 }
771
772 static int __devexit ehca_remove(struct ibmebus_dev *dev)
773 {
774 struct ehca_shca *shca = dev->ofdev.dev.driver_data;
775 int ret;
776
777 sysfs_remove_group(&dev->ofdev.dev.kobj, &ehca_dev_attr_grp);
778
779 if (ehca_open_aqp1 == 1) {
780 int i;
781 for (i = 0; i < shca->num_ports; i++) {
782 ret = ehca_destroy_aqp1(&shca->sport[i]);
783 if (ret)
784 ehca_err(&shca->ib_device,
785 "Cannot destroy AQP1 for port %x "
786 "ret=%x", ret, i);
787 }
788 }
789
790 ib_unregister_device(&shca->ib_device);
791
792 ret = ehca_dereg_internal_maxmr(shca);
793 if (ret)
794 ehca_err(&shca->ib_device,
795 "Cannot destroy internal MR. ret=%x", ret);
796
797 ret = ehca_dealloc_pd(&shca->pd->ib_pd);
798 if (ret)
799 ehca_err(&shca->ib_device,
800 "Cannot destroy internal PD. ret=%x", ret);
801
802 ret = ehca_destroy_eq(shca, &shca->eq);
803 if (ret)
804 ehca_err(&shca->ib_device, "Cannot destroy EQ. ret=%x", ret);
805
806 ret = ehca_destroy_eq(shca, &shca->neq);
807 if (ret)
808 ehca_err(&shca->ib_device, "Canot destroy NEQ. ret=%x", ret);
809
810 ib_dealloc_device(&shca->ib_device);
811
812 spin_lock(&shca_list_lock);
813 list_del(&shca->shca_list);
814 spin_unlock(&shca_list_lock);
815
816 return ret;
817 }
818
819 static struct of_device_id ehca_device_table[] =
820 {
821 {
822 .name = "lhca",
823 .compatible = "IBM,lhca",
824 },
825 {},
826 };
827
828 static struct ibmebus_driver ehca_driver = {
829 .name = "ehca",
830 .id_table = ehca_device_table,
831 .probe = ehca_probe,
832 .remove = ehca_remove,
833 };
834
835 void ehca_poll_eqs(unsigned long data)
836 {
837 struct ehca_shca *shca;
838
839 spin_lock(&shca_list_lock);
840 list_for_each_entry(shca, &shca_list, shca_list) {
841 if (shca->eq.is_initialized) {
842 /* call deadman proc only if eq ptr does not change */
843 struct ehca_eq *eq = &shca->eq;
844 int max = 3;
845 volatile u64 q_ofs, q_ofs2;
846 u64 flags;
847 spin_lock_irqsave(&eq->spinlock, flags);
848 q_ofs = eq->ipz_queue.current_q_offset;
849 spin_unlock_irqrestore(&eq->spinlock, flags);
850 do {
851 spin_lock_irqsave(&eq->spinlock, flags);
852 q_ofs2 = eq->ipz_queue.current_q_offset;
853 spin_unlock_irqrestore(&eq->spinlock, flags);
854 max--;
855 } while (q_ofs == q_ofs2 && max > 0);
856 if (q_ofs == q_ofs2)
857 ehca_process_eq(shca, 0);
858 }
859 }
860 mod_timer(&poll_eqs_timer, jiffies + HZ);
861 spin_unlock(&shca_list_lock);
862 }
863
864 int __init ehca_module_init(void)
865 {
866 int ret;
867
868 printk(KERN_INFO "eHCA Infiniband Device Driver "
869 "(Rel.: SVNEHCA_0023)\n");
870
871 ret = ehca_create_comp_pool();
872 if (ret) {
873 ehca_gen_err("Cannot create comp pool.");
874 return ret;
875 }
876
877 ret = ehca_create_slab_caches();
878 if (ret) {
879 ehca_gen_err("Cannot create SLAB caches");
880 ret = -ENOMEM;
881 goto module_init1;
882 }
883
884 ret = ibmebus_register_driver(&ehca_driver);
885 if (ret) {
886 ehca_gen_err("Cannot register eHCA device driver");
887 ret = -EINVAL;
888 goto module_init2;
889 }
890
891 ret = sysfs_create_group(&ehca_driver.driver.kobj, &ehca_drv_attr_grp);
892 if (ret) /* only complain; we can live without attributes */
893 ehca_gen_err("Cannot create driver attributes ret=%d", ret);
894
895 if (ehca_poll_all_eqs != 1) {
896 ehca_gen_err("WARNING!!!");
897 ehca_gen_err("It is possible to lose interrupts.");
898 } else {
899 init_timer(&poll_eqs_timer);
900 poll_eqs_timer.function = ehca_poll_eqs;
901 poll_eqs_timer.expires = jiffies + HZ;
902 add_timer(&poll_eqs_timer);
903 }
904
905 return 0;
906
907 module_init2:
908 ehca_destroy_slab_caches();
909
910 module_init1:
911 ehca_destroy_comp_pool();
912 return ret;
913 };
914
915 void __exit ehca_module_exit(void)
916 {
917 if (ehca_poll_all_eqs == 1)
918 del_timer_sync(&poll_eqs_timer);
919
920 sysfs_remove_group(&ehca_driver.driver.kobj, &ehca_drv_attr_grp);
921 ibmebus_unregister_driver(&ehca_driver);
922
923 ehca_destroy_slab_caches();
924
925 ehca_destroy_comp_pool();
926
927 idr_destroy(&ehca_cq_idr);
928 idr_destroy(&ehca_qp_idr);
929 };
930
931 module_init(ehca_module_init);
932 module_exit(ehca_module_exit);
ubuntu-zesty-kernel mirror