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IB/ehca: Implement modify_port
[mirror_ubuntu-artful-kernel.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
7e28db5d
HNN		 43#ifdef CONFIG_PPC_64K_PAGES
44#include <linux/slab.h>
45#endif
fab97220
HS		 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
52MODULE_LICENSE("Dual BSD/GPL");
53MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
54MODULE_DESCRIPTION("IBM eServer HCA InfiniBand Device Driver");
31726798 55MODULE_VERSION("SVNEHCA_0022");
fab97220
HS		 56
57int ehca_open_aqp1 = 0;
58int ehca_debug_level = 0;
59int ehca_hw_level = 0;
60int ehca_nr_ports = 2;
61int ehca_use_hp_mr = 0;
62int ehca_port_act_time = 30;
63int ehca_poll_all_eqs = 1;
64int ehca_static_rate = -1;
4fd30060 65int ehca_scaling_code = 1;
fab97220
HS		 66
67module_param_named(open_aqp1, ehca_open_aqp1, int, 0);
68module_param_named(debug_level, ehca_debug_level, int, 0);
69module_param_named(hw_level, ehca_hw_level, int, 0);
70module_param_named(nr_ports, ehca_nr_ports, int, 0);
71module_param_named(use_hp_mr, ehca_use_hp_mr, int, 0);
72module_param_named(port_act_time, ehca_port_act_time, int, 0);
73module_param_named(poll_all_eqs, ehca_poll_all_eqs, int, 0);
74module_param_named(static_rate, ehca_static_rate, int, 0);
4fd30060 75module_param_named(scaling_code, ehca_scaling_code, int, 0);
fab97220
HS		 76
77MODULE_PARM_DESC(open_aqp1,
78 "AQP1 on startup (0: no (default), 1: yes)");
79MODULE_PARM_DESC(debug_level,
80 "debug level"
81 " (0: no debug traces (default), 1: with debug traces)");
82MODULE_PARM_DESC(hw_level,
83 "hardware level"
84 " (0: autosensing (default), 1: v. 0.20, 2: v. 0.21)");
85MODULE_PARM_DESC(nr_ports,
86 "number of connected ports (default: 2)");
87MODULE_PARM_DESC(use_hp_mr,
88 "high performance MRs (0: no (default), 1: yes)");
89MODULE_PARM_DESC(port_act_time,
90 "time to wait for port activation (default: 30 sec)");
91MODULE_PARM_DESC(poll_all_eqs,
92 "polls all event queues periodically"
93 " (0: no, 1: yes (default))");
94MODULE_PARM_DESC(static_rate,
95 "set permanent static rate (default: disabled)");
4fd30060
HNN		 96MODULE_PARM_DESC(scaling_code,
97 "set scaling code (0: disabled, 1: enabled/default)");
fab97220
HS		 98
99spinlock_t ehca_qp_idr_lock;
100spinlock_t ehca_cq_idr_lock;
101DEFINE_IDR(ehca_qp_idr);
102DEFINE_IDR(ehca_cq_idr);
103
7e28db5d 104
fab97220
HS		 105static struct list_head shca_list; /* list of all registered ehcas */
106static spinlock_t shca_list_lock;
107
108static struct timer_list poll_eqs_timer;
109
7e28db5d
HNN		 110#ifdef CONFIG_PPC_64K_PAGES
111static struct kmem_cache *ctblk_cache = NULL;
112
f2d91361 113void *ehca_alloc_fw_ctrlblock(gfp_t flags)
7e28db5d 114{
f2d91361 115 void *ret = kmem_cache_zalloc(ctblk_cache, flags);
7e28db5d
HNN		 116 if (!ret)
117 ehca_gen_err("Out of memory for ctblk");
118 return ret;
119}
120
121void ehca_free_fw_ctrlblock(void *ptr)
122{
123 if (ptr)
124 kmem_cache_free(ctblk_cache, ptr);
125
126}
127#endif
128
fab97220
HS		 129static int ehca_create_slab_caches(void)
130{
131 int ret;
132
133 ret = ehca_init_pd_cache();
134 if (ret) {
135 ehca_gen_err("Cannot create PD SLAB cache.");
136 return ret;
137 }
138
139 ret = ehca_init_cq_cache();
140 if (ret) {
141 ehca_gen_err("Cannot create CQ SLAB cache.");
142 goto create_slab_caches2;
143 }
144
145 ret = ehca_init_qp_cache();
146 if (ret) {
147 ehca_gen_err("Cannot create QP SLAB cache.");
148 goto create_slab_caches3;
149 }
150
151 ret = ehca_init_av_cache();
152 if (ret) {
153 ehca_gen_err("Cannot create AV SLAB cache.");
154 goto create_slab_caches4;
155 }
156
157 ret = ehca_init_mrmw_cache();
158 if (ret) {
159 ehca_gen_err("Cannot create MR&MW SLAB cache.");
160 goto create_slab_caches5;
161 }
162
7e28db5d
HNN		 163#ifdef CONFIG_PPC_64K_PAGES
164 ctblk_cache = kmem_cache_create("ehca_cache_ctblk",
165 EHCA_PAGESIZE, H_CB_ALIGNMENT,
166 SLAB_HWCACHE_ALIGN,
167 NULL, NULL);
168 if (!ctblk_cache) {
169 ehca_gen_err("Cannot create ctblk SLAB cache.");
170 ehca_cleanup_mrmw_cache();
171 goto create_slab_caches5;
172 }
173#endif
fab97220
HS		 174 return 0;
175
176create_slab_caches5:
177 ehca_cleanup_av_cache();
178
179create_slab_caches4:
180 ehca_cleanup_qp_cache();
181
182create_slab_caches3:
183 ehca_cleanup_cq_cache();
184
185create_slab_caches2:
186 ehca_cleanup_pd_cache();
187
188 return ret;
189}
190
191static void ehca_destroy_slab_caches(void)
192{
193 ehca_cleanup_mrmw_cache();
194 ehca_cleanup_av_cache();
195 ehca_cleanup_qp_cache();
196 ehca_cleanup_cq_cache();
197 ehca_cleanup_pd_cache();
7e28db5d
HNN		 198#ifdef CONFIG_PPC_64K_PAGES
199 if (ctblk_cache)
200 kmem_cache_destroy(ctblk_cache);
201#endif
fab97220
HS		 202}
203
204#define EHCA_HCAAVER EHCA_BMASK_IBM(32,39)
205#define EHCA_REVID EHCA_BMASK_IBM(40,63)
206
207int ehca_sense_attributes(struct ehca_shca *shca)
208{
209 int ret = 0;
210 u64 h_ret;
211 struct hipz_query_hca *rblock;
212
f2d91361 213 rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
fab97220
HS		 214 if (!rblock) {
215 ehca_gen_err("Cannot allocate rblock memory.");
216 return -ENOMEM;
217 }
218
219 h_ret = hipz_h_query_hca(shca->ipz_hca_handle, rblock);
220 if (h_ret != H_SUCCESS) {
221 ehca_gen_err("Cannot query device properties. h_ret=%lx",
222 h_ret);
223 ret = -EPERM;
224 goto num_ports1;
225 }
226
227 if (ehca_nr_ports == 1)
228 shca->num_ports = 1;
229 else
230 shca->num_ports = (u8)rblock->num_ports;
231
232 ehca_gen_dbg(" ... found %x ports", rblock->num_ports);
233
234 if (ehca_hw_level == 0) {
235 u32 hcaaver;
236 u32 revid;
237
238 hcaaver = EHCA_BMASK_GET(EHCA_HCAAVER, rblock->hw_ver);
239 revid = EHCA_BMASK_GET(EHCA_REVID, rblock->hw_ver);
240
241 ehca_gen_dbg(" ... hardware version=%x:%x", hcaaver, revid);
242
243 if ((hcaaver == 1) && (revid == 0))
244 shca->hw_level = 0;
245 else if ((hcaaver == 1) && (revid == 1))
246 shca->hw_level = 1;
247 else if ((hcaaver == 1) && (revid == 2))
248 shca->hw_level = 2;
249 }
250 ehca_gen_dbg(" ... hardware level=%x", shca->hw_level);
251
252 shca->sport[0].rate = IB_RATE_30_GBPS;
253 shca->sport[1].rate = IB_RATE_30_GBPS;
254
255num_ports1:
7e28db5d 256 ehca_free_fw_ctrlblock(rblock);
fab97220
HS		 257 return ret;
258}
259
260static int init_node_guid(struct ehca_shca *shca)
261{
262 int ret = 0;
263 struct hipz_query_hca *rblock;
264
f2d91361 265 rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
fab97220
HS		 266 if (!rblock) {
267 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
268 return -ENOMEM;
269 }
270
271 if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) {
272 ehca_err(&shca->ib_device, "Can't query device properties");
273 ret = -EINVAL;
274 goto init_node_guid1;
275 }
276
277 memcpy(&shca->ib_device.node_guid, &rblock->node_guid, sizeof(u64));
278
279init_node_guid1:
7e28db5d 280 ehca_free_fw_ctrlblock(rblock);
fab97220
HS		 281 return ret;
282}
283
0f248d9c 284int ehca_init_device(struct ehca_shca *shca)
fab97220
HS		 285{
286 int ret;
287
288 ret = init_node_guid(shca);
289 if (ret)
290 return ret;
291
292 strlcpy(shca->ib_device.name, "ehca%d", IB_DEVICE_NAME_MAX);
293 shca->ib_device.owner = THIS_MODULE;
294
4c34bdf5 295 shca->ib_device.uverbs_abi_ver = 6;
fab97220
HS		 296 shca->ib_device.uverbs_cmd_mask =
297 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
298 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
299 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
300 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
301 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
302 (1ull << IB_USER_VERBS_CMD_REG_MR) |
303 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
304 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
305 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
306 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
307 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
308 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
309 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
310 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
311 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
312 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST);
313
07ebafba 314 shca->ib_device.node_type = RDMA_NODE_IB_CA;
fab97220
HS		 315 shca->ib_device.phys_port_cnt = shca->num_ports;
316 shca->ib_device.dma_device = &shca->ibmebus_dev->ofdev.dev;
317 shca->ib_device.query_device = ehca_query_device;
318 shca->ib_device.query_port = ehca_query_port;
319 shca->ib_device.query_gid = ehca_query_gid;
320 shca->ib_device.query_pkey = ehca_query_pkey;
321 /* shca->in_device.modify_device = ehca_modify_device */
322 shca->ib_device.modify_port = ehca_modify_port;
323 shca->ib_device.alloc_ucontext = ehca_alloc_ucontext;
324 shca->ib_device.dealloc_ucontext = ehca_dealloc_ucontext;
325 shca->ib_device.alloc_pd = ehca_alloc_pd;
326 shca->ib_device.dealloc_pd = ehca_dealloc_pd;
327 shca->ib_device.create_ah = ehca_create_ah;
328 /* shca->ib_device.modify_ah = ehca_modify_ah; */
329 shca->ib_device.query_ah = ehca_query_ah;
330 shca->ib_device.destroy_ah = ehca_destroy_ah;
331 shca->ib_device.create_qp = ehca_create_qp;
332 shca->ib_device.modify_qp = ehca_modify_qp;
333 shca->ib_device.query_qp = ehca_query_qp;
334 shca->ib_device.destroy_qp = ehca_destroy_qp;
335 shca->ib_device.post_send = ehca_post_send;
336 shca->ib_device.post_recv = ehca_post_recv;
337 shca->ib_device.create_cq = ehca_create_cq;
338 shca->ib_device.destroy_cq = ehca_destroy_cq;
339 shca->ib_device.resize_cq = ehca_resize_cq;
340 shca->ib_device.poll_cq = ehca_poll_cq;
341 /* shca->ib_device.peek_cq = ehca_peek_cq; */
342 shca->ib_device.req_notify_cq = ehca_req_notify_cq;
343 /* shca->ib_device.req_ncomp_notif = ehca_req_ncomp_notif; */
344 shca->ib_device.get_dma_mr = ehca_get_dma_mr;
345 shca->ib_device.reg_phys_mr = ehca_reg_phys_mr;
346 shca->ib_device.reg_user_mr = ehca_reg_user_mr;
347 shca->ib_device.query_mr = ehca_query_mr;
348 shca->ib_device.dereg_mr = ehca_dereg_mr;
349 shca->ib_device.rereg_phys_mr = ehca_rereg_phys_mr;
350 shca->ib_device.alloc_mw = ehca_alloc_mw;
351 shca->ib_device.bind_mw = ehca_bind_mw;
352 shca->ib_device.dealloc_mw = ehca_dealloc_mw;
353 shca->ib_device.alloc_fmr = ehca_alloc_fmr;
354 shca->ib_device.map_phys_fmr = ehca_map_phys_fmr;
355 shca->ib_device.unmap_fmr = ehca_unmap_fmr;
356 shca->ib_device.dealloc_fmr = ehca_dealloc_fmr;
357 shca->ib_device.attach_mcast = ehca_attach_mcast;
358 shca->ib_device.detach_mcast = ehca_detach_mcast;
359 /* shca->ib_device.process_mad = ehca_process_mad; */
360 shca->ib_device.mmap = ehca_mmap;
361
fab97220
HS		 362 return ret;
363}
364
365static int ehca_create_aqp1(struct ehca_shca *shca, u32 port)
366{
367 struct ehca_sport *sport = &shca->sport[port - 1];
368 struct ib_cq *ibcq;
369 struct ib_qp *ibqp;
370 struct ib_qp_init_attr qp_init_attr;
371 int ret;
372
373 if (sport->ibcq_aqp1) {
374 ehca_err(&shca->ib_device, "AQP1 CQ is already created.");
375 return -EPERM;
376 }
377
378 ibcq = ib_create_cq(&shca->ib_device, NULL, NULL, (void*)(-1), 10);
379 if (IS_ERR(ibcq)) {
380 ehca_err(&shca->ib_device, "Cannot create AQP1 CQ.");
381 return PTR_ERR(ibcq);
382 }
383 sport->ibcq_aqp1 = ibcq;
384
385 if (sport->ibqp_aqp1) {
386 ehca_err(&shca->ib_device, "AQP1 QP is already created.");
387 ret = -EPERM;
388 goto create_aqp1;
389 }
390
391 memset(&qp_init_attr, 0, sizeof(struct ib_qp_init_attr));
392 qp_init_attr.send_cq = ibcq;
393 qp_init_attr.recv_cq = ibcq;
394 qp_init_attr.sq_sig_type = IB_SIGNAL_ALL_WR;
395 qp_init_attr.cap.max_send_wr = 100;
396 qp_init_attr.cap.max_recv_wr = 100;
397 qp_init_attr.cap.max_send_sge = 2;
398 qp_init_attr.cap.max_recv_sge = 1;
399 qp_init_attr.qp_type = IB_QPT_GSI;
400 qp_init_attr.port_num = port;
401 qp_init_attr.qp_context = NULL;
402 qp_init_attr.event_handler = NULL;
403 qp_init_attr.srq = NULL;
404
405 ibqp = ib_create_qp(&shca->pd->ib_pd, &qp_init_attr);
406 if (IS_ERR(ibqp)) {
407 ehca_err(&shca->ib_device, "Cannot create AQP1 QP.");
408 ret = PTR_ERR(ibqp);
409 goto create_aqp1;
410 }
411 sport->ibqp_aqp1 = ibqp;
412
413 return 0;
414
415create_aqp1:
416 ib_destroy_cq(sport->ibcq_aqp1);
417 return ret;
418}
419
420static int ehca_destroy_aqp1(struct ehca_sport *sport)
421{
422 int ret;
423
424 ret = ib_destroy_qp(sport->ibqp_aqp1);
425 if (ret) {
426 ehca_gen_err("Cannot destroy AQP1 QP. ret=%x", ret);
427 return ret;
428 }
429
430 ret = ib_destroy_cq(sport->ibcq_aqp1);
431 if (ret)
432 ehca_gen_err("Cannot destroy AQP1 CQ. ret=%x", ret);
433
434 return ret;
435}
436
437static ssize_t ehca_show_debug_level(struct device_driver *ddp, char *buf)
438{
78d8d5f9
HNN		 439 return snprintf(buf, PAGE_SIZE, "%d\n",
440 ehca_debug_level);
fab97220
HS		 441}
442
443static ssize_t ehca_store_debug_level(struct device_driver *ddp,
444 const char *buf, size_t count)
445{
446 int value = (*buf) - '0';
447 if (value >= 0 && value <= 9)
448 ehca_debug_level = value;
449 return 1;
450}
451
452DRIVER_ATTR(debug_level, S_IRUSR | S_IWUSR,
453 ehca_show_debug_level, ehca_store_debug_level);
454
455void ehca_create_driver_sysfs(struct ibmebus_driver *drv)
456{
457 driver_create_file(&drv->driver, &driver_attr_debug_level);
458}
459
460void ehca_remove_driver_sysfs(struct ibmebus_driver *drv)
461{
462 driver_remove_file(&drv->driver, &driver_attr_debug_level);
463}
464
465#define EHCA_RESOURCE_ATTR(name) \
466static ssize_t ehca_show_##name(struct device *dev, \
467 struct device_attribute *attr, \
468 char *buf) \
469{ \
470 struct ehca_shca *shca; \
471 struct hipz_query_hca *rblock; \
472 int data; \
473 \
474 shca = dev->driver_data; \
475 \
f2d91361 476 rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); \
fab97220
HS		 477 if (!rblock) { \
478 dev_err(dev, "Can't allocate rblock memory."); \
479 return 0; \
480 } \
481 \
482 if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) { \
483 dev_err(dev, "Can't query device properties"); \
7e28db5d 484 ehca_free_fw_ctrlblock(rblock); \
fab97220
HS		 485 return 0; \
486 } \
487 \
488 data = rblock->name; \
7e28db5d 489 ehca_free_fw_ctrlblock(rblock); \
fab97220
HS		 490 \
491 if ((strcmp(#name, "num_ports") == 0) && (ehca_nr_ports == 1)) \
492 return snprintf(buf, 256, "1\n"); \
493 else \
494 return snprintf(buf, 256, "%d\n", data); \
495 \
496} \
497static DEVICE_ATTR(name, S_IRUGO, ehca_show_##name, NULL);
498
499EHCA_RESOURCE_ATTR(num_ports);
500EHCA_RESOURCE_ATTR(hw_ver);
501EHCA_RESOURCE_ATTR(max_eq);
502EHCA_RESOURCE_ATTR(cur_eq);
503EHCA_RESOURCE_ATTR(max_cq);
504EHCA_RESOURCE_ATTR(cur_cq);
505EHCA_RESOURCE_ATTR(max_qp);
506EHCA_RESOURCE_ATTR(cur_qp);
507EHCA_RESOURCE_ATTR(max_mr);
508EHCA_RESOURCE_ATTR(cur_mr);
509EHCA_RESOURCE_ATTR(max_mw);
510EHCA_RESOURCE_ATTR(cur_mw);
511EHCA_RESOURCE_ATTR(max_pd);
512EHCA_RESOURCE_ATTR(max_ah);
513
514static ssize_t ehca_show_adapter_handle(struct device *dev,
515 struct device_attribute *attr,
516 char *buf)
517{
518 struct ehca_shca *shca = dev->driver_data;
519
520 return sprintf(buf, "%lx\n", shca->ipz_hca_handle.handle);
521
522}
523static DEVICE_ATTR(adapter_handle, S_IRUGO, ehca_show_adapter_handle, NULL);
524
525
526void ehca_create_device_sysfs(struct ibmebus_dev *dev)
527{
528 device_create_file(&dev->ofdev.dev, &dev_attr_adapter_handle);
529 device_create_file(&dev->ofdev.dev, &dev_attr_num_ports);
530 device_create_file(&dev->ofdev.dev, &dev_attr_hw_ver);
531 device_create_file(&dev->ofdev.dev, &dev_attr_max_eq);
532 device_create_file(&dev->ofdev.dev, &dev_attr_cur_eq);
533 device_create_file(&dev->ofdev.dev, &dev_attr_max_cq);
534 device_create_file(&dev->ofdev.dev, &dev_attr_cur_cq);
535 device_create_file(&dev->ofdev.dev, &dev_attr_max_qp);
536 device_create_file(&dev->ofdev.dev, &dev_attr_cur_qp);
537 device_create_file(&dev->ofdev.dev, &dev_attr_max_mr);
538 device_create_file(&dev->ofdev.dev, &dev_attr_cur_mr);
539 device_create_file(&dev->ofdev.dev, &dev_attr_max_mw);
540 device_create_file(&dev->ofdev.dev, &dev_attr_cur_mw);
541 device_create_file(&dev->ofdev.dev, &dev_attr_max_pd);
542 device_create_file(&dev->ofdev.dev, &dev_attr_max_ah);
543}
544
545void ehca_remove_device_sysfs(struct ibmebus_dev *dev)
546{
547 device_remove_file(&dev->ofdev.dev, &dev_attr_adapter_handle);
548 device_remove_file(&dev->ofdev.dev, &dev_attr_num_ports);
549 device_remove_file(&dev->ofdev.dev, &dev_attr_hw_ver);
550 device_remove_file(&dev->ofdev.dev, &dev_attr_max_eq);
551 device_remove_file(&dev->ofdev.dev, &dev_attr_cur_eq);
552 device_remove_file(&dev->ofdev.dev, &dev_attr_max_cq);
553 device_remove_file(&dev->ofdev.dev, &dev_attr_cur_cq);
554 device_remove_file(&dev->ofdev.dev, &dev_attr_max_qp);
555 device_remove_file(&dev->ofdev.dev, &dev_attr_cur_qp);
556 device_remove_file(&dev->ofdev.dev, &dev_attr_max_mr);
557 device_remove_file(&dev->ofdev.dev, &dev_attr_cur_mr);
558 device_remove_file(&dev->ofdev.dev, &dev_attr_max_mw);
559 device_remove_file(&dev->ofdev.dev, &dev_attr_cur_mw);
560 device_remove_file(&dev->ofdev.dev, &dev_attr_max_pd);
561 device_remove_file(&dev->ofdev.dev, &dev_attr_max_ah);
562}
563
564static int __devinit ehca_probe(struct ibmebus_dev *dev,
565 const struct of_device_id *id)
566{
567 struct ehca_shca *shca;
568 u64 *handle;
569 struct ib_pd *ibpd;
570 int ret;
571
572 handle = (u64 *)get_property(dev->ofdev.node, "ibm,hca-handle", NULL);
573 if (!handle) {
574 ehca_gen_err("Cannot get eHCA handle for adapter: %s.",
575 dev->ofdev.node->full_name);
576 return -ENODEV;
577 }
578
579 if (!(*handle)) {
580 ehca_gen_err("Wrong eHCA handle for adapter: %s.",
581 dev->ofdev.node->full_name);
582 return -ENODEV;
583 }
584
585 shca = (struct ehca_shca *)ib_alloc_device(sizeof(*shca));
586 if (!shca) {
587 ehca_gen_err("Cannot allocate shca memory.");
588 return -ENOMEM;
589 }
c4ed790d 590 mutex_init(&shca->modify_mutex);
fab97220
HS		 591
592 shca->ibmebus_dev = dev;
593 shca->ipz_hca_handle.handle = *handle;
594 dev->ofdev.dev.driver_data = shca;
595
596 ret = ehca_sense_attributes(shca);
597 if (ret < 0) {
598 ehca_gen_err("Cannot sense eHCA attributes.");
599 goto probe1;
600 }
601
0f248d9c 602 ret = ehca_init_device(shca);
fab97220 603 if (ret) {
0f248d9c 604 ehca_gen_err("Cannot init ehca device struct");
fab97220
HS		 605 goto probe1;
606 }
607
608 /* create event queues */
609 ret = ehca_create_eq(shca, &shca->eq, EHCA_EQ, 2048);
610 if (ret) {
611 ehca_err(&shca->ib_device, "Cannot create EQ.");
0f248d9c 612 goto probe1;
fab97220
HS		 613 }
614
615 ret = ehca_create_eq(shca, &shca->neq, EHCA_NEQ, 513);
616 if (ret) {
617 ehca_err(&shca->ib_device, "Cannot create NEQ.");
618 goto probe3;
619 }
620
621 /* create internal protection domain */
622 ibpd = ehca_alloc_pd(&shca->ib_device, (void*)(-1), NULL);
623 if (IS_ERR(ibpd)) {
624 ehca_err(&shca->ib_device, "Cannot create internal PD.");
625 ret = PTR_ERR(ibpd);
626 goto probe4;
627 }
628
629 shca->pd = container_of(ibpd, struct ehca_pd, ib_pd);
630 shca->pd->ib_pd.device = &shca->ib_device;
631
632 /* create internal max MR */
633 ret = ehca_reg_internal_maxmr(shca, shca->pd, &shca->maxmr);
634
635 if (ret) {
636 ehca_err(&shca->ib_device, "Cannot create internal MR ret=%x",
637 ret);
638 goto probe5;
639 }
640
0f248d9c
HNN		 641 ret = ib_register_device(&shca->ib_device);
642 if (ret) {
643 ehca_err(&shca->ib_device,
644 "ib_register_device() failed ret=%x", ret);
645 goto probe6;
646 }
647
fab97220
HS		 648 /* create AQP1 for port 1 */
649 if (ehca_open_aqp1 == 1) {
650 shca->sport[0].port_state = IB_PORT_DOWN;
651 ret = ehca_create_aqp1(shca, 1);
652 if (ret) {
653 ehca_err(&shca->ib_device,
654 "Cannot create AQP1 for port 1.");
0f248d9c 655 goto probe7;
fab97220
HS		 656 }
657 }
658
659 /* create AQP1 for port 2 */
660 if ((ehca_open_aqp1 == 1) && (shca->num_ports == 2)) {
661 shca->sport[1].port_state = IB_PORT_DOWN;
662 ret = ehca_create_aqp1(shca, 2);
663 if (ret) {
664 ehca_err(&shca->ib_device,
665 "Cannot create AQP1 for port 2.");
0f248d9c 666 goto probe8;
fab97220
HS		 667 }
668 }
669
670 ehca_create_device_sysfs(dev);
671
672 spin_lock(&shca_list_lock);
673 list_add(&shca->shca_list, &shca_list);
674 spin_unlock(&shca_list_lock);
675
676 return 0;
677
0f248d9c 678probe8:
fab97220
HS		 679 ret = ehca_destroy_aqp1(&shca->sport[0]);
680 if (ret)
681 ehca_err(&shca->ib_device,
682 "Cannot destroy AQP1 for port 1. ret=%x", ret);
683
0f248d9c
HNN		 684probe7:
685 ib_unregister_device(&shca->ib_device);
686
fab97220
HS		 687probe6:
688 ret = ehca_dereg_internal_maxmr(shca);
689 if (ret)
690 ehca_err(&shca->ib_device,
691 "Cannot destroy internal MR. ret=%x", ret);
692
693probe5:
694 ret = ehca_dealloc_pd(&shca->pd->ib_pd);
695 if (ret)
696 ehca_err(&shca->ib_device,
697 "Cannot destroy internal PD. ret=%x", ret);
698
699probe4:
700 ret = ehca_destroy_eq(shca, &shca->neq);
701 if (ret)
702 ehca_err(&shca->ib_device,
703 "Cannot destroy NEQ. ret=%x", ret);
704
705probe3:
706 ret = ehca_destroy_eq(shca, &shca->eq);
707 if (ret)
708 ehca_err(&shca->ib_device,
709 "Cannot destroy EQ. ret=%x", ret);
710
fab97220
HS		 711probe1:
712 ib_dealloc_device(&shca->ib_device);
713
714 return -EINVAL;
715}
716
717static int __devexit ehca_remove(struct ibmebus_dev *dev)
718{
719 struct ehca_shca *shca = dev->ofdev.dev.driver_data;
720 int ret;
721
722 ehca_remove_device_sysfs(dev);
723
724 if (ehca_open_aqp1 == 1) {
725 int i;
726 for (i = 0; i < shca->num_ports; i++) {
727 ret = ehca_destroy_aqp1(&shca->sport[i]);
728 if (ret)
729 ehca_err(&shca->ib_device,
730 "Cannot destroy AQP1 for port %x "
731 "ret=%x", ret, i);
732 }
733 }
734
735 ib_unregister_device(&shca->ib_device);
736
737 ret = ehca_dereg_internal_maxmr(shca);
738 if (ret)
739 ehca_err(&shca->ib_device,
740 "Cannot destroy internal MR. ret=%x", ret);
741
742 ret = ehca_dealloc_pd(&shca->pd->ib_pd);
743 if (ret)
744 ehca_err(&shca->ib_device,
745 "Cannot destroy internal PD. ret=%x", ret);
746
747 ret = ehca_destroy_eq(shca, &shca->eq);
748 if (ret)
749 ehca_err(&shca->ib_device, "Cannot destroy EQ. ret=%x", ret);
750
751 ret = ehca_destroy_eq(shca, &shca->neq);
752 if (ret)
753 ehca_err(&shca->ib_device, "Canot destroy NEQ. ret=%x", ret);
754
755 ib_dealloc_device(&shca->ib_device);
756
757 spin_lock(&shca_list_lock);
758 list_del(&shca->shca_list);
759 spin_unlock(&shca_list_lock);
760
761 return ret;
762}
763
764static struct of_device_id ehca_device_table[] =
765{
766 {
767 .name = "lhca",
768 .compatible = "IBM,lhca",
769 },
770 {},
771};
772
773static struct ibmebus_driver ehca_driver = {
774 .name = "ehca",
775 .id_table = ehca_device_table,
776 .probe = ehca_probe,
777 .remove = ehca_remove,
778};
779
780void ehca_poll_eqs(unsigned long data)
781{
782 struct ehca_shca *shca;
783
784 spin_lock(&shca_list_lock);
785 list_for_each_entry(shca, &shca_list, shca_list) {
78d8d5f9
HNN		 786 if (shca->eq.is_initialized) {
787 /* call deadman proc only if eq ptr does not change */
788 struct ehca_eq *eq = &shca->eq;
789 int max = 3;
790 volatile u64 q_ofs, q_ofs2;
791 u64 flags;
792 spin_lock_irqsave(&eq->spinlock, flags);
793 q_ofs = eq->ipz_queue.current_q_offset;
794 spin_unlock_irqrestore(&eq->spinlock, flags);
795 do {
796 spin_lock_irqsave(&eq->spinlock, flags);
797 q_ofs2 = eq->ipz_queue.current_q_offset;
798 spin_unlock_irqrestore(&eq->spinlock, flags);
799 max--;
800 } while (q_ofs == q_ofs2 && max > 0);
801 if (q_ofs == q_ofs2)
802 ehca_process_eq(shca, 0);
803 }
fab97220
HS		 804 }
805 mod_timer(&poll_eqs_timer, jiffies + HZ);
806 spin_unlock(&shca_list_lock);
807}
808
809int __init ehca_module_init(void)
810{
811 int ret;
812
813 printk(KERN_INFO "eHCA Infiniband Device Driver "
31726798 814 "(Rel.: SVNEHCA_0022)\n");
fab97220
HS		 815 idr_init(&ehca_qp_idr);
816 idr_init(&ehca_cq_idr);
817 spin_lock_init(&ehca_qp_idr_lock);
818 spin_lock_init(&ehca_cq_idr_lock);
819
820 INIT_LIST_HEAD(&shca_list);
821 spin_lock_init(&shca_list_lock);
822
823 if ((ret = ehca_create_comp_pool())) {
824 ehca_gen_err("Cannot create comp pool.");
825 return ret;
826 }
827
828 if ((ret = ehca_create_slab_caches())) {
829 ehca_gen_err("Cannot create SLAB caches");
830 ret = -ENOMEM;
831 goto module_init1;
832 }
833
834 if ((ret = ibmebus_register_driver(&ehca_driver))) {
835 ehca_gen_err("Cannot register eHCA device driver");
836 ret = -EINVAL;
837 goto module_init2;
838 }
839
840 ehca_create_driver_sysfs(&ehca_driver);
841
842 if (ehca_poll_all_eqs != 1) {
843 ehca_gen_err("WARNING!!!");
844 ehca_gen_err("It is possible to lose interrupts.");
845 } else {
846 init_timer(&poll_eqs_timer);
847 poll_eqs_timer.function = ehca_poll_eqs;
848 poll_eqs_timer.expires = jiffies + HZ;
849 add_timer(&poll_eqs_timer);
850 }
851
852 return 0;
853
854module_init2:
855 ehca_destroy_slab_caches();
856
857module_init1:
858 ehca_destroy_comp_pool();
859 return ret;
860};
861
862void __exit ehca_module_exit(void)
863{
864 if (ehca_poll_all_eqs == 1)
865 del_timer_sync(&poll_eqs_timer);
866
867 ehca_remove_driver_sysfs(&ehca_driver);
868 ibmebus_unregister_driver(&ehca_driver);
869
870 ehca_destroy_slab_caches();
871
872 ehca_destroy_comp_pool();
873
874 idr_destroy(&ehca_cq_idr);
875 idr_destroy(&ehca_qp_idr);
876};
877
878module_init(ehca_module_init);
879module_exit(ehca_module_exit);
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