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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 | ||
39089e77 JF |
52 | #define HCAD_VERSION "0024" |
53 | ||
fab97220 HS |
54 | MODULE_LICENSE("Dual BSD/GPL"); |
55 | MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>"); | |
56 | MODULE_DESCRIPTION("IBM eServer HCA InfiniBand Device Driver"); | |
39089e77 | 57 | MODULE_VERSION(HCAD_VERSION); |
fab97220 HS |
58 | |
59 | int ehca_open_aqp1 = 0; | |
60 | int ehca_debug_level = 0; | |
61 | int ehca_hw_level = 0; | |
62 | int ehca_nr_ports = 2; | |
63 | int ehca_use_hp_mr = 0; | |
64 | int ehca_port_act_time = 30; | |
65 | int ehca_poll_all_eqs = 1; | |
66 | int ehca_static_rate = -1; | |
4e430dcb | 67 | int ehca_scaling_code = 0; |
5bb7d929 | 68 | int ehca_mr_largepage = 0; |
fab97220 | 69 | |
339e2640 AB |
70 | module_param_named(open_aqp1, ehca_open_aqp1, int, S_IRUGO); |
71 | module_param_named(debug_level, ehca_debug_level, int, S_IRUGO); | |
72 | module_param_named(hw_level, ehca_hw_level, int, S_IRUGO); | |
73 | module_param_named(nr_ports, ehca_nr_ports, int, S_IRUGO); | |
74 | module_param_named(use_hp_mr, ehca_use_hp_mr, int, S_IRUGO); | |
75 | module_param_named(port_act_time, ehca_port_act_time, int, S_IRUGO); | |
76 | module_param_named(poll_all_eqs, ehca_poll_all_eqs, int, S_IRUGO); | |
77 | module_param_named(static_rate, ehca_static_rate, int, S_IRUGO); | |
78 | module_param_named(scaling_code, ehca_scaling_code, int, S_IRUGO); | |
79 | module_param_named(mr_largepage, ehca_mr_largepage, int, S_IRUGO); | |
fab97220 HS |
80 | |
81 | MODULE_PARM_DESC(open_aqp1, | |
82 | "AQP1 on startup (0: no (default), 1: yes)"); | |
83 | MODULE_PARM_DESC(debug_level, | |
84 | "debug level" | |
85 | " (0: no debug traces (default), 1: with debug traces)"); | |
86 | MODULE_PARM_DESC(hw_level, | |
87 | "hardware level" | |
88 | " (0: autosensing (default), 1: v. 0.20, 2: v. 0.21)"); | |
89 | MODULE_PARM_DESC(nr_ports, | |
90 | "number of connected ports (default: 2)"); | |
91 | MODULE_PARM_DESC(use_hp_mr, | |
92 | "high performance MRs (0: no (default), 1: yes)"); | |
93 | MODULE_PARM_DESC(port_act_time, | |
94 | "time to wait for port activation (default: 30 sec)"); | |
95 | MODULE_PARM_DESC(poll_all_eqs, | |
96 | "polls all event queues periodically" | |
97 | " (0: no, 1: yes (default))"); | |
98 | MODULE_PARM_DESC(static_rate, | |
99 | "set permanent static rate (default: disabled)"); | |
4fd30060 | 100 | MODULE_PARM_DESC(scaling_code, |
b8a3ba55 | 101 | "set scaling code (0: disabled/default, 1: enabled)"); |
5bb7d929 HNN |
102 | MODULE_PARM_DESC(mr_largepage, |
103 | "use large page for MR (0: use PAGE_SIZE (default), " | |
104 | "1: use large page depending on MR size"); | |
fab97220 | 105 | |
26ed687f JF |
106 | DEFINE_RWLOCK(ehca_qp_idr_lock); |
107 | DEFINE_RWLOCK(ehca_cq_idr_lock); | |
fab97220 HS |
108 | DEFINE_IDR(ehca_qp_idr); |
109 | DEFINE_IDR(ehca_cq_idr); | |
110 | ||
9844b71b JF |
111 | static LIST_HEAD(shca_list); /* list of all registered ehcas */ |
112 | static DEFINE_SPINLOCK(shca_list_lock); | |
fab97220 HS |
113 | |
114 | static struct timer_list poll_eqs_timer; | |
115 | ||
7e28db5d | 116 | #ifdef CONFIG_PPC_64K_PAGES |
2b94397a | 117 | static struct kmem_cache *ctblk_cache; |
7e28db5d | 118 | |
f2d91361 | 119 | void *ehca_alloc_fw_ctrlblock(gfp_t flags) |
7e28db5d | 120 | { |
f2d91361 | 121 | void *ret = kmem_cache_zalloc(ctblk_cache, flags); |
7e28db5d HNN |
122 | if (!ret) |
123 | ehca_gen_err("Out of memory for ctblk"); | |
124 | return ret; | |
125 | } | |
126 | ||
127 | void ehca_free_fw_ctrlblock(void *ptr) | |
128 | { | |
129 | if (ptr) | |
130 | kmem_cache_free(ctblk_cache, ptr); | |
131 | ||
132 | } | |
133 | #endif | |
134 | ||
51d2bfbd HNN |
135 | int ehca2ib_return_code(u64 ehca_rc) |
136 | { | |
137 | switch (ehca_rc) { | |
138 | case H_SUCCESS: | |
139 | return 0; | |
140 | case H_RESOURCE: /* Resource in use */ | |
141 | case H_BUSY: | |
142 | return -EBUSY; | |
143 | case H_NOT_ENOUGH_RESOURCES: /* insufficient resources */ | |
144 | case H_CONSTRAINED: /* resource constraint */ | |
145 | case H_NO_MEM: | |
146 | return -ENOMEM; | |
147 | default: | |
148 | return -EINVAL; | |
149 | } | |
150 | } | |
151 | ||
fab97220 HS |
152 | static int ehca_create_slab_caches(void) |
153 | { | |
154 | int ret; | |
155 | ||
156 | ret = ehca_init_pd_cache(); | |
157 | if (ret) { | |
158 | ehca_gen_err("Cannot create PD SLAB cache."); | |
159 | return ret; | |
160 | } | |
161 | ||
162 | ret = ehca_init_cq_cache(); | |
163 | if (ret) { | |
164 | ehca_gen_err("Cannot create CQ SLAB cache."); | |
165 | goto create_slab_caches2; | |
166 | } | |
167 | ||
168 | ret = ehca_init_qp_cache(); | |
169 | if (ret) { | |
170 | ehca_gen_err("Cannot create QP SLAB cache."); | |
171 | goto create_slab_caches3; | |
172 | } | |
173 | ||
174 | ret = ehca_init_av_cache(); | |
175 | if (ret) { | |
176 | ehca_gen_err("Cannot create AV SLAB cache."); | |
177 | goto create_slab_caches4; | |
178 | } | |
179 | ||
180 | ret = ehca_init_mrmw_cache(); | |
181 | if (ret) { | |
182 | ehca_gen_err("Cannot create MR&MW SLAB cache."); | |
183 | goto create_slab_caches5; | |
184 | } | |
185 | ||
e2f81daf SR |
186 | ret = ehca_init_small_qp_cache(); |
187 | if (ret) { | |
188 | ehca_gen_err("Cannot create small queue SLAB cache."); | |
189 | goto create_slab_caches6; | |
190 | } | |
191 | ||
7e28db5d HNN |
192 | #ifdef CONFIG_PPC_64K_PAGES |
193 | ctblk_cache = kmem_cache_create("ehca_cache_ctblk", | |
194 | EHCA_PAGESIZE, H_CB_ALIGNMENT, | |
195 | SLAB_HWCACHE_ALIGN, | |
20c2df83 | 196 | NULL); |
7e28db5d HNN |
197 | if (!ctblk_cache) { |
198 | ehca_gen_err("Cannot create ctblk SLAB cache."); | |
e2f81daf SR |
199 | ehca_cleanup_small_qp_cache(); |
200 | goto create_slab_caches6; | |
7e28db5d HNN |
201 | } |
202 | #endif | |
fab97220 HS |
203 | return 0; |
204 | ||
e2f81daf SR |
205 | create_slab_caches6: |
206 | ehca_cleanup_mrmw_cache(); | |
207 | ||
fab97220 HS |
208 | create_slab_caches5: |
209 | ehca_cleanup_av_cache(); | |
210 | ||
211 | create_slab_caches4: | |
212 | ehca_cleanup_qp_cache(); | |
213 | ||
214 | create_slab_caches3: | |
215 | ehca_cleanup_cq_cache(); | |
216 | ||
217 | create_slab_caches2: | |
218 | ehca_cleanup_pd_cache(); | |
219 | ||
220 | return ret; | |
221 | } | |
222 | ||
223 | static void ehca_destroy_slab_caches(void) | |
224 | { | |
e2f81daf | 225 | ehca_cleanup_small_qp_cache(); |
fab97220 HS |
226 | ehca_cleanup_mrmw_cache(); |
227 | ehca_cleanup_av_cache(); | |
228 | ehca_cleanup_qp_cache(); | |
229 | ehca_cleanup_cq_cache(); | |
230 | ehca_cleanup_pd_cache(); | |
7e28db5d HNN |
231 | #ifdef CONFIG_PPC_64K_PAGES |
232 | if (ctblk_cache) | |
233 | kmem_cache_destroy(ctblk_cache); | |
234 | #endif | |
fab97220 HS |
235 | } |
236 | ||
2b94397a HNN |
237 | #define EHCA_HCAAVER EHCA_BMASK_IBM(32, 39) |
238 | #define EHCA_REVID EHCA_BMASK_IBM(40, 63) | |
fab97220 | 239 | |
91f13aa3 JF |
240 | static struct cap_descr { |
241 | u64 mask; | |
242 | char *descr; | |
243 | } hca_cap_descr[] = { | |
244 | { HCA_CAP_AH_PORT_NR_CHECK, "HCA_CAP_AH_PORT_NR_CHECK" }, | |
245 | { HCA_CAP_ATOMIC, "HCA_CAP_ATOMIC" }, | |
246 | { HCA_CAP_AUTO_PATH_MIG, "HCA_CAP_AUTO_PATH_MIG" }, | |
247 | { HCA_CAP_BAD_P_KEY_CTR, "HCA_CAP_BAD_P_KEY_CTR" }, | |
248 | { HCA_CAP_SQD_RTS_PORT_CHANGE, "HCA_CAP_SQD_RTS_PORT_CHANGE" }, | |
249 | { HCA_CAP_CUR_QP_STATE_MOD, "HCA_CAP_CUR_QP_STATE_MOD" }, | |
250 | { HCA_CAP_INIT_TYPE, "HCA_CAP_INIT_TYPE" }, | |
251 | { HCA_CAP_PORT_ACTIVE_EVENT, "HCA_CAP_PORT_ACTIVE_EVENT" }, | |
252 | { HCA_CAP_Q_KEY_VIOL_CTR, "HCA_CAP_Q_KEY_VIOL_CTR" }, | |
253 | { HCA_CAP_WQE_RESIZE, "HCA_CAP_WQE_RESIZE" }, | |
254 | { HCA_CAP_RAW_PACKET_MCAST, "HCA_CAP_RAW_PACKET_MCAST" }, | |
255 | { HCA_CAP_SHUTDOWN_PORT, "HCA_CAP_SHUTDOWN_PORT" }, | |
256 | { HCA_CAP_RC_LL_QP, "HCA_CAP_RC_LL_QP" }, | |
257 | { HCA_CAP_SRQ, "HCA_CAP_SRQ" }, | |
258 | { HCA_CAP_UD_LL_QP, "HCA_CAP_UD_LL_QP" }, | |
259 | { HCA_CAP_RESIZE_MR, "HCA_CAP_RESIZE_MR" }, | |
260 | { HCA_CAP_MINI_QP, "HCA_CAP_MINI_QP" }, | |
261 | }; | |
262 | ||
fab97220 HS |
263 | int ehca_sense_attributes(struct ehca_shca *shca) |
264 | { | |
91f13aa3 | 265 | int i, ret = 0; |
fab97220 HS |
266 | u64 h_ret; |
267 | struct hipz_query_hca *rblock; | |
91f13aa3 | 268 | struct hipz_query_port *port; |
fab97220 | 269 | |
f2d91361 | 270 | rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); |
fab97220 HS |
271 | if (!rblock) { |
272 | ehca_gen_err("Cannot allocate rblock memory."); | |
273 | return -ENOMEM; | |
274 | } | |
275 | ||
276 | h_ret = hipz_h_query_hca(shca->ipz_hca_handle, rblock); | |
277 | if (h_ret != H_SUCCESS) { | |
e3722192 | 278 | ehca_gen_err("Cannot query device properties. h_ret=%li", |
fab97220 HS |
279 | h_ret); |
280 | ret = -EPERM; | |
91f13aa3 | 281 | goto sense_attributes1; |
fab97220 HS |
282 | } |
283 | ||
284 | if (ehca_nr_ports == 1) | |
285 | shca->num_ports = 1; | |
286 | else | |
287 | shca->num_ports = (u8)rblock->num_ports; | |
288 | ||
289 | ehca_gen_dbg(" ... found %x ports", rblock->num_ports); | |
290 | ||
291 | if (ehca_hw_level == 0) { | |
292 | u32 hcaaver; | |
293 | u32 revid; | |
294 | ||
295 | hcaaver = EHCA_BMASK_GET(EHCA_HCAAVER, rblock->hw_ver); | |
296 | revid = EHCA_BMASK_GET(EHCA_REVID, rblock->hw_ver); | |
297 | ||
298 | ehca_gen_dbg(" ... hardware version=%x:%x", hcaaver, revid); | |
299 | ||
fbb9318b JF |
300 | if (hcaaver == 1) { |
301 | if (revid <= 3) | |
302 | shca->hw_level = 0x10 | (revid + 1); | |
303 | else | |
304 | shca->hw_level = 0x14; | |
305 | } else if (hcaaver == 2) { | |
306 | if (revid == 0) | |
307 | shca->hw_level = 0x21; | |
308 | else if (revid == 0x10) | |
309 | shca->hw_level = 0x22; | |
310 | else if (revid == 0x20 || revid == 0x21) | |
311 | shca->hw_level = 0x23; | |
312 | } | |
313 | ||
314 | if (!shca->hw_level) { | |
91f13aa3 JF |
315 | ehca_gen_warn("unknown hardware version" |
316 | " - assuming default level"); | |
317 | shca->hw_level = 0x22; | |
318 | } | |
fbb9318b JF |
319 | } else |
320 | shca->hw_level = ehca_hw_level; | |
fab97220 HS |
321 | ehca_gen_dbg(" ... hardware level=%x", shca->hw_level); |
322 | ||
323 | shca->sport[0].rate = IB_RATE_30_GBPS; | |
324 | shca->sport[1].rate = IB_RATE_30_GBPS; | |
325 | ||
91f13aa3 JF |
326 | shca->hca_cap = rblock->hca_cap_indicators; |
327 | ehca_gen_dbg(" ... HCA capabilities:"); | |
328 | for (i = 0; i < ARRAY_SIZE(hca_cap_descr); i++) | |
329 | if (EHCA_BMASK_GET(hca_cap_descr[i].mask, shca->hca_cap)) | |
330 | ehca_gen_dbg(" %s", hca_cap_descr[i].descr); | |
331 | ||
5bb7d929 HNN |
332 | shca->hca_cap_mr_pgsize = rblock->memory_page_size_supported; |
333 | ||
2b94397a | 334 | port = (struct hipz_query_port *)rblock; |
91f13aa3 JF |
335 | h_ret = hipz_h_query_port(shca->ipz_hca_handle, 1, port); |
336 | if (h_ret != H_SUCCESS) { | |
e3722192 | 337 | ehca_gen_err("Cannot query port properties. h_ret=%li", |
91f13aa3 JF |
338 | h_ret); |
339 | ret = -EPERM; | |
340 | goto sense_attributes1; | |
341 | } | |
342 | ||
343 | shca->max_mtu = port->max_mtu; | |
344 | ||
345 | sense_attributes1: | |
7e28db5d | 346 | ehca_free_fw_ctrlblock(rblock); |
fab97220 HS |
347 | return ret; |
348 | } | |
349 | ||
350 | static int init_node_guid(struct ehca_shca *shca) | |
351 | { | |
352 | int ret = 0; | |
353 | struct hipz_query_hca *rblock; | |
354 | ||
f2d91361 | 355 | rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); |
fab97220 HS |
356 | if (!rblock) { |
357 | ehca_err(&shca->ib_device, "Can't allocate rblock memory."); | |
358 | return -ENOMEM; | |
359 | } | |
360 | ||
361 | if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) { | |
362 | ehca_err(&shca->ib_device, "Can't query device properties"); | |
363 | ret = -EINVAL; | |
364 | goto init_node_guid1; | |
365 | } | |
366 | ||
367 | memcpy(&shca->ib_device.node_guid, &rblock->node_guid, sizeof(u64)); | |
368 | ||
369 | init_node_guid1: | |
7e28db5d | 370 | ehca_free_fw_ctrlblock(rblock); |
fab97220 HS |
371 | return ret; |
372 | } | |
373 | ||
0f248d9c | 374 | int ehca_init_device(struct ehca_shca *shca) |
fab97220 HS |
375 | { |
376 | int ret; | |
377 | ||
378 | ret = init_node_guid(shca); | |
379 | if (ret) | |
380 | return ret; | |
381 | ||
382 | strlcpy(shca->ib_device.name, "ehca%d", IB_DEVICE_NAME_MAX); | |
383 | shca->ib_device.owner = THIS_MODULE; | |
384 | ||
5281a4b8 | 385 | shca->ib_device.uverbs_abi_ver = 8; |
fab97220 HS |
386 | shca->ib_device.uverbs_cmd_mask = |
387 | (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | | |
388 | (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | | |
389 | (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | | |
390 | (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | | |
391 | (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | | |
392 | (1ull << IB_USER_VERBS_CMD_REG_MR) | | |
393 | (1ull << IB_USER_VERBS_CMD_DEREG_MR) | | |
394 | (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | | |
395 | (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | | |
396 | (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | | |
397 | (1ull << IB_USER_VERBS_CMD_CREATE_QP) | | |
398 | (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | | |
399 | (1ull << IB_USER_VERBS_CMD_QUERY_QP) | | |
400 | (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | | |
401 | (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | | |
402 | (1ull << IB_USER_VERBS_CMD_DETACH_MCAST); | |
403 | ||
07ebafba | 404 | shca->ib_device.node_type = RDMA_NODE_IB_CA; |
fab97220 | 405 | shca->ib_device.phys_port_cnt = shca->num_ports; |
f4fd0b22 | 406 | shca->ib_device.num_comp_vectors = 1; |
6b08f3ae | 407 | shca->ib_device.dma_device = &shca->ofdev->dev; |
fab97220 HS |
408 | shca->ib_device.query_device = ehca_query_device; |
409 | shca->ib_device.query_port = ehca_query_port; | |
410 | shca->ib_device.query_gid = ehca_query_gid; | |
411 | shca->ib_device.query_pkey = ehca_query_pkey; | |
412 | /* shca->in_device.modify_device = ehca_modify_device */ | |
413 | shca->ib_device.modify_port = ehca_modify_port; | |
414 | shca->ib_device.alloc_ucontext = ehca_alloc_ucontext; | |
415 | shca->ib_device.dealloc_ucontext = ehca_dealloc_ucontext; | |
416 | shca->ib_device.alloc_pd = ehca_alloc_pd; | |
417 | shca->ib_device.dealloc_pd = ehca_dealloc_pd; | |
418 | shca->ib_device.create_ah = ehca_create_ah; | |
419 | /* shca->ib_device.modify_ah = ehca_modify_ah; */ | |
420 | shca->ib_device.query_ah = ehca_query_ah; | |
421 | shca->ib_device.destroy_ah = ehca_destroy_ah; | |
422 | shca->ib_device.create_qp = ehca_create_qp; | |
423 | shca->ib_device.modify_qp = ehca_modify_qp; | |
424 | shca->ib_device.query_qp = ehca_query_qp; | |
425 | shca->ib_device.destroy_qp = ehca_destroy_qp; | |
426 | shca->ib_device.post_send = ehca_post_send; | |
427 | shca->ib_device.post_recv = ehca_post_recv; | |
428 | shca->ib_device.create_cq = ehca_create_cq; | |
429 | shca->ib_device.destroy_cq = ehca_destroy_cq; | |
430 | shca->ib_device.resize_cq = ehca_resize_cq; | |
431 | shca->ib_device.poll_cq = ehca_poll_cq; | |
432 | /* shca->ib_device.peek_cq = ehca_peek_cq; */ | |
433 | shca->ib_device.req_notify_cq = ehca_req_notify_cq; | |
434 | /* shca->ib_device.req_ncomp_notif = ehca_req_ncomp_notif; */ | |
435 | shca->ib_device.get_dma_mr = ehca_get_dma_mr; | |
436 | shca->ib_device.reg_phys_mr = ehca_reg_phys_mr; | |
437 | shca->ib_device.reg_user_mr = ehca_reg_user_mr; | |
438 | shca->ib_device.query_mr = ehca_query_mr; | |
439 | shca->ib_device.dereg_mr = ehca_dereg_mr; | |
440 | shca->ib_device.rereg_phys_mr = ehca_rereg_phys_mr; | |
441 | shca->ib_device.alloc_mw = ehca_alloc_mw; | |
442 | shca->ib_device.bind_mw = ehca_bind_mw; | |
443 | shca->ib_device.dealloc_mw = ehca_dealloc_mw; | |
444 | shca->ib_device.alloc_fmr = ehca_alloc_fmr; | |
445 | shca->ib_device.map_phys_fmr = ehca_map_phys_fmr; | |
446 | shca->ib_device.unmap_fmr = ehca_unmap_fmr; | |
447 | shca->ib_device.dealloc_fmr = ehca_dealloc_fmr; | |
448 | shca->ib_device.attach_mcast = ehca_attach_mcast; | |
449 | shca->ib_device.detach_mcast = ehca_detach_mcast; | |
450 | /* shca->ib_device.process_mad = ehca_process_mad; */ | |
451 | shca->ib_device.mmap = ehca_mmap; | |
452 | ||
a6a12947 JF |
453 | if (EHCA_BMASK_GET(HCA_CAP_SRQ, shca->hca_cap)) { |
454 | shca->ib_device.uverbs_cmd_mask |= | |
455 | (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | | |
456 | (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | | |
457 | (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | | |
458 | (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ); | |
459 | ||
460 | shca->ib_device.create_srq = ehca_create_srq; | |
461 | shca->ib_device.modify_srq = ehca_modify_srq; | |
462 | shca->ib_device.query_srq = ehca_query_srq; | |
463 | shca->ib_device.destroy_srq = ehca_destroy_srq; | |
464 | shca->ib_device.post_srq_recv = ehca_post_srq_recv; | |
465 | } | |
466 | ||
fab97220 HS |
467 | return ret; |
468 | } | |
469 | ||
470 | static int ehca_create_aqp1(struct ehca_shca *shca, u32 port) | |
471 | { | |
472 | struct ehca_sport *sport = &shca->sport[port - 1]; | |
473 | struct ib_cq *ibcq; | |
474 | struct ib_qp *ibqp; | |
475 | struct ib_qp_init_attr qp_init_attr; | |
476 | int ret; | |
477 | ||
478 | if (sport->ibcq_aqp1) { | |
479 | ehca_err(&shca->ib_device, "AQP1 CQ is already created."); | |
480 | return -EPERM; | |
481 | } | |
482 | ||
2b94397a | 483 | ibcq = ib_create_cq(&shca->ib_device, NULL, NULL, (void *)(-1), 10, 0); |
fab97220 HS |
484 | if (IS_ERR(ibcq)) { |
485 | ehca_err(&shca->ib_device, "Cannot create AQP1 CQ."); | |
486 | return PTR_ERR(ibcq); | |
487 | } | |
488 | sport->ibcq_aqp1 = ibcq; | |
489 | ||
490 | if (sport->ibqp_aqp1) { | |
491 | ehca_err(&shca->ib_device, "AQP1 QP is already created."); | |
492 | ret = -EPERM; | |
493 | goto create_aqp1; | |
494 | } | |
495 | ||
496 | memset(&qp_init_attr, 0, sizeof(struct ib_qp_init_attr)); | |
497 | qp_init_attr.send_cq = ibcq; | |
498 | qp_init_attr.recv_cq = ibcq; | |
499 | qp_init_attr.sq_sig_type = IB_SIGNAL_ALL_WR; | |
500 | qp_init_attr.cap.max_send_wr = 100; | |
501 | qp_init_attr.cap.max_recv_wr = 100; | |
502 | qp_init_attr.cap.max_send_sge = 2; | |
503 | qp_init_attr.cap.max_recv_sge = 1; | |
504 | qp_init_attr.qp_type = IB_QPT_GSI; | |
505 | qp_init_attr.port_num = port; | |
506 | qp_init_attr.qp_context = NULL; | |
507 | qp_init_attr.event_handler = NULL; | |
508 | qp_init_attr.srq = NULL; | |
509 | ||
510 | ibqp = ib_create_qp(&shca->pd->ib_pd, &qp_init_attr); | |
511 | if (IS_ERR(ibqp)) { | |
512 | ehca_err(&shca->ib_device, "Cannot create AQP1 QP."); | |
513 | ret = PTR_ERR(ibqp); | |
514 | goto create_aqp1; | |
515 | } | |
516 | sport->ibqp_aqp1 = ibqp; | |
517 | ||
518 | return 0; | |
519 | ||
520 | create_aqp1: | |
521 | ib_destroy_cq(sport->ibcq_aqp1); | |
522 | return ret; | |
523 | } | |
524 | ||
525 | static int ehca_destroy_aqp1(struct ehca_sport *sport) | |
526 | { | |
527 | int ret; | |
528 | ||
529 | ret = ib_destroy_qp(sport->ibqp_aqp1); | |
530 | if (ret) { | |
e3722192 | 531 | ehca_gen_err("Cannot destroy AQP1 QP. ret=%i", ret); |
fab97220 HS |
532 | return ret; |
533 | } | |
534 | ||
535 | ret = ib_destroy_cq(sport->ibcq_aqp1); | |
536 | if (ret) | |
e3722192 | 537 | ehca_gen_err("Cannot destroy AQP1 CQ. ret=%i", ret); |
fab97220 HS |
538 | |
539 | return ret; | |
540 | } | |
541 | ||
542 | static ssize_t ehca_show_debug_level(struct device_driver *ddp, char *buf) | |
543 | { | |
78d8d5f9 HNN |
544 | return snprintf(buf, PAGE_SIZE, "%d\n", |
545 | ehca_debug_level); | |
fab97220 HS |
546 | } |
547 | ||
548 | static ssize_t ehca_store_debug_level(struct device_driver *ddp, | |
549 | const char *buf, size_t count) | |
550 | { | |
551 | int value = (*buf) - '0'; | |
552 | if (value >= 0 && value <= 9) | |
553 | ehca_debug_level = value; | |
554 | return 1; | |
555 | } | |
556 | ||
557 | DRIVER_ATTR(debug_level, S_IRUSR | S_IWUSR, | |
558 | ehca_show_debug_level, ehca_store_debug_level); | |
559 | ||
bba9b601 JF |
560 | static struct attribute *ehca_drv_attrs[] = { |
561 | &driver_attr_debug_level.attr, | |
562 | NULL | |
563 | }; | |
fab97220 | 564 | |
bba9b601 JF |
565 | static struct attribute_group ehca_drv_attr_grp = { |
566 | .attrs = ehca_drv_attrs | |
567 | }; | |
fab97220 HS |
568 | |
569 | #define EHCA_RESOURCE_ATTR(name) \ | |
570 | static ssize_t ehca_show_##name(struct device *dev, \ | |
571 | struct device_attribute *attr, \ | |
572 | char *buf) \ | |
573 | { \ | |
574 | struct ehca_shca *shca; \ | |
575 | struct hipz_query_hca *rblock; \ | |
576 | int data; \ | |
577 | \ | |
578 | shca = dev->driver_data; \ | |
579 | \ | |
f2d91361 | 580 | rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); \ |
fab97220 | 581 | if (!rblock) { \ |
898eb71c | 582 | dev_err(dev, "Can't allocate rblock memory.\n"); \ |
fab97220 HS |
583 | return 0; \ |
584 | } \ | |
585 | \ | |
586 | if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) { \ | |
898eb71c | 587 | dev_err(dev, "Can't query device properties\n"); \ |
7e28db5d | 588 | ehca_free_fw_ctrlblock(rblock); \ |
fab97220 HS |
589 | return 0; \ |
590 | } \ | |
591 | \ | |
592 | data = rblock->name; \ | |
7e28db5d | 593 | ehca_free_fw_ctrlblock(rblock); \ |
fab97220 HS |
594 | \ |
595 | if ((strcmp(#name, "num_ports") == 0) && (ehca_nr_ports == 1)) \ | |
596 | return snprintf(buf, 256, "1\n"); \ | |
597 | else \ | |
598 | return snprintf(buf, 256, "%d\n", data); \ | |
599 | \ | |
600 | } \ | |
601 | static DEVICE_ATTR(name, S_IRUGO, ehca_show_##name, NULL); | |
602 | ||
603 | EHCA_RESOURCE_ATTR(num_ports); | |
604 | EHCA_RESOURCE_ATTR(hw_ver); | |
605 | EHCA_RESOURCE_ATTR(max_eq); | |
606 | EHCA_RESOURCE_ATTR(cur_eq); | |
607 | EHCA_RESOURCE_ATTR(max_cq); | |
608 | EHCA_RESOURCE_ATTR(cur_cq); | |
609 | EHCA_RESOURCE_ATTR(max_qp); | |
610 | EHCA_RESOURCE_ATTR(cur_qp); | |
611 | EHCA_RESOURCE_ATTR(max_mr); | |
612 | EHCA_RESOURCE_ATTR(cur_mr); | |
613 | EHCA_RESOURCE_ATTR(max_mw); | |
614 | EHCA_RESOURCE_ATTR(cur_mw); | |
615 | EHCA_RESOURCE_ATTR(max_pd); | |
616 | EHCA_RESOURCE_ATTR(max_ah); | |
617 | ||
618 | static ssize_t ehca_show_adapter_handle(struct device *dev, | |
619 | struct device_attribute *attr, | |
620 | char *buf) | |
621 | { | |
622 | struct ehca_shca *shca = dev->driver_data; | |
623 | ||
624 | return sprintf(buf, "%lx\n", shca->ipz_hca_handle.handle); | |
625 | ||
626 | } | |
627 | static DEVICE_ATTR(adapter_handle, S_IRUGO, ehca_show_adapter_handle, NULL); | |
628 | ||
5bb7d929 HNN |
629 | static ssize_t ehca_show_mr_largepage(struct device *dev, |
630 | struct device_attribute *attr, | |
631 | char *buf) | |
632 | { | |
633 | return sprintf(buf, "%d\n", ehca_mr_largepage); | |
634 | } | |
635 | static DEVICE_ATTR(mr_largepage, S_IRUGO, ehca_show_mr_largepage, NULL); | |
636 | ||
bba9b601 JF |
637 | static struct attribute *ehca_dev_attrs[] = { |
638 | &dev_attr_adapter_handle.attr, | |
639 | &dev_attr_num_ports.attr, | |
640 | &dev_attr_hw_ver.attr, | |
641 | &dev_attr_max_eq.attr, | |
642 | &dev_attr_cur_eq.attr, | |
643 | &dev_attr_max_cq.attr, | |
644 | &dev_attr_cur_cq.attr, | |
645 | &dev_attr_max_qp.attr, | |
646 | &dev_attr_cur_qp.attr, | |
647 | &dev_attr_max_mr.attr, | |
648 | &dev_attr_cur_mr.attr, | |
649 | &dev_attr_max_mw.attr, | |
650 | &dev_attr_cur_mw.attr, | |
651 | &dev_attr_max_pd.attr, | |
652 | &dev_attr_max_ah.attr, | |
5bb7d929 | 653 | &dev_attr_mr_largepage.attr, |
bba9b601 JF |
654 | NULL |
655 | }; | |
fab97220 | 656 | |
bba9b601 JF |
657 | static struct attribute_group ehca_dev_attr_grp = { |
658 | .attrs = ehca_dev_attrs | |
659 | }; | |
fab97220 | 660 | |
6b08f3ae | 661 | static int __devinit ehca_probe(struct of_device *dev, |
fab97220 HS |
662 | const struct of_device_id *id) |
663 | { | |
664 | struct ehca_shca *shca; | |
a7edd0e6 | 665 | const u64 *handle; |
fab97220 HS |
666 | struct ib_pd *ibpd; |
667 | int ret; | |
668 | ||
6b08f3ae | 669 | handle = of_get_property(dev->node, "ibm,hca-handle", NULL); |
fab97220 HS |
670 | if (!handle) { |
671 | ehca_gen_err("Cannot get eHCA handle for adapter: %s.", | |
6b08f3ae | 672 | dev->node->full_name); |
fab97220 HS |
673 | return -ENODEV; |
674 | } | |
675 | ||
676 | if (!(*handle)) { | |
677 | ehca_gen_err("Wrong eHCA handle for adapter: %s.", | |
6b08f3ae | 678 | dev->node->full_name); |
fab97220 HS |
679 | return -ENODEV; |
680 | } | |
681 | ||
682 | shca = (struct ehca_shca *)ib_alloc_device(sizeof(*shca)); | |
683 | if (!shca) { | |
684 | ehca_gen_err("Cannot allocate shca memory."); | |
685 | return -ENOMEM; | |
686 | } | |
c4ed790d | 687 | mutex_init(&shca->modify_mutex); |
fab97220 | 688 | |
6b08f3ae | 689 | shca->ofdev = dev; |
fab97220 | 690 | shca->ipz_hca_handle.handle = *handle; |
6b08f3ae | 691 | dev->dev.driver_data = shca; |
fab97220 HS |
692 | |
693 | ret = ehca_sense_attributes(shca); | |
694 | if (ret < 0) { | |
695 | ehca_gen_err("Cannot sense eHCA attributes."); | |
696 | goto probe1; | |
697 | } | |
698 | ||
0f248d9c | 699 | ret = ehca_init_device(shca); |
fab97220 | 700 | if (ret) { |
0f248d9c | 701 | ehca_gen_err("Cannot init ehca device struct"); |
fab97220 HS |
702 | goto probe1; |
703 | } | |
704 | ||
705 | /* create event queues */ | |
706 | ret = ehca_create_eq(shca, &shca->eq, EHCA_EQ, 2048); | |
707 | if (ret) { | |
708 | ehca_err(&shca->ib_device, "Cannot create EQ."); | |
0f248d9c | 709 | goto probe1; |
fab97220 HS |
710 | } |
711 | ||
712 | ret = ehca_create_eq(shca, &shca->neq, EHCA_NEQ, 513); | |
713 | if (ret) { | |
714 | ehca_err(&shca->ib_device, "Cannot create NEQ."); | |
715 | goto probe3; | |
716 | } | |
717 | ||
718 | /* create internal protection domain */ | |
2b94397a | 719 | ibpd = ehca_alloc_pd(&shca->ib_device, (void *)(-1), NULL); |
fab97220 HS |
720 | if (IS_ERR(ibpd)) { |
721 | ehca_err(&shca->ib_device, "Cannot create internal PD."); | |
722 | ret = PTR_ERR(ibpd); | |
723 | goto probe4; | |
724 | } | |
725 | ||
726 | shca->pd = container_of(ibpd, struct ehca_pd, ib_pd); | |
727 | shca->pd->ib_pd.device = &shca->ib_device; | |
728 | ||
729 | /* create internal max MR */ | |
730 | ret = ehca_reg_internal_maxmr(shca, shca->pd, &shca->maxmr); | |
731 | ||
732 | if (ret) { | |
e3722192 | 733 | ehca_err(&shca->ib_device, "Cannot create internal MR ret=%i", |
fab97220 HS |
734 | ret); |
735 | goto probe5; | |
736 | } | |
737 | ||
0f248d9c HNN |
738 | ret = ib_register_device(&shca->ib_device); |
739 | if (ret) { | |
740 | ehca_err(&shca->ib_device, | |
e3722192 | 741 | "ib_register_device() failed ret=%i", ret); |
0f248d9c HNN |
742 | goto probe6; |
743 | } | |
744 | ||
fab97220 HS |
745 | /* create AQP1 for port 1 */ |
746 | if (ehca_open_aqp1 == 1) { | |
747 | shca->sport[0].port_state = IB_PORT_DOWN; | |
748 | ret = ehca_create_aqp1(shca, 1); | |
749 | if (ret) { | |
750 | ehca_err(&shca->ib_device, | |
751 | "Cannot create AQP1 for port 1."); | |
0f248d9c | 752 | goto probe7; |
fab97220 HS |
753 | } |
754 | } | |
755 | ||
756 | /* create AQP1 for port 2 */ | |
757 | if ((ehca_open_aqp1 == 1) && (shca->num_ports == 2)) { | |
758 | shca->sport[1].port_state = IB_PORT_DOWN; | |
759 | ret = ehca_create_aqp1(shca, 2); | |
760 | if (ret) { | |
761 | ehca_err(&shca->ib_device, | |
762 | "Cannot create AQP1 for port 2."); | |
0f248d9c | 763 | goto probe8; |
fab97220 HS |
764 | } |
765 | } | |
766 | ||
6b08f3ae | 767 | ret = sysfs_create_group(&dev->dev.kobj, &ehca_dev_attr_grp); |
bba9b601 JF |
768 | if (ret) /* only complain; we can live without attributes */ |
769 | ehca_err(&shca->ib_device, | |
770 | "Cannot create device attributes ret=%d", ret); | |
fab97220 HS |
771 | |
772 | spin_lock(&shca_list_lock); | |
773 | list_add(&shca->shca_list, &shca_list); | |
774 | spin_unlock(&shca_list_lock); | |
775 | ||
776 | return 0; | |
777 | ||
0f248d9c | 778 | probe8: |
fab97220 HS |
779 | ret = ehca_destroy_aqp1(&shca->sport[0]); |
780 | if (ret) | |
781 | ehca_err(&shca->ib_device, | |
e3722192 | 782 | "Cannot destroy AQP1 for port 1. ret=%i", ret); |
fab97220 | 783 | |
0f248d9c HNN |
784 | probe7: |
785 | ib_unregister_device(&shca->ib_device); | |
786 | ||
fab97220 HS |
787 | probe6: |
788 | ret = ehca_dereg_internal_maxmr(shca); | |
789 | if (ret) | |
790 | ehca_err(&shca->ib_device, | |
791 | "Cannot destroy internal MR. ret=%x", ret); | |
792 | ||
793 | probe5: | |
794 | ret = ehca_dealloc_pd(&shca->pd->ib_pd); | |
795 | if (ret) | |
796 | ehca_err(&shca->ib_device, | |
797 | "Cannot destroy internal PD. ret=%x", ret); | |
798 | ||
799 | probe4: | |
800 | ret = ehca_destroy_eq(shca, &shca->neq); | |
801 | if (ret) | |
802 | ehca_err(&shca->ib_device, | |
803 | "Cannot destroy NEQ. ret=%x", ret); | |
804 | ||
805 | probe3: | |
806 | ret = ehca_destroy_eq(shca, &shca->eq); | |
807 | if (ret) | |
808 | ehca_err(&shca->ib_device, | |
809 | "Cannot destroy EQ. ret=%x", ret); | |
810 | ||
fab97220 HS |
811 | probe1: |
812 | ib_dealloc_device(&shca->ib_device); | |
813 | ||
814 | return -EINVAL; | |
815 | } | |
816 | ||
6b08f3ae | 817 | static int __devexit ehca_remove(struct of_device *dev) |
fab97220 | 818 | { |
6b08f3ae | 819 | struct ehca_shca *shca = dev->dev.driver_data; |
fab97220 HS |
820 | int ret; |
821 | ||
6b08f3ae | 822 | sysfs_remove_group(&dev->dev.kobj, &ehca_dev_attr_grp); |
fab97220 HS |
823 | |
824 | if (ehca_open_aqp1 == 1) { | |
825 | int i; | |
826 | for (i = 0; i < shca->num_ports; i++) { | |
827 | ret = ehca_destroy_aqp1(&shca->sport[i]); | |
828 | if (ret) | |
829 | ehca_err(&shca->ib_device, | |
830 | "Cannot destroy AQP1 for port %x " | |
e3722192 | 831 | "ret=%i", ret, i); |
fab97220 HS |
832 | } |
833 | } | |
834 | ||
835 | ib_unregister_device(&shca->ib_device); | |
836 | ||
837 | ret = ehca_dereg_internal_maxmr(shca); | |
838 | if (ret) | |
839 | ehca_err(&shca->ib_device, | |
e3722192 | 840 | "Cannot destroy internal MR. ret=%i", ret); |
fab97220 HS |
841 | |
842 | ret = ehca_dealloc_pd(&shca->pd->ib_pd); | |
843 | if (ret) | |
844 | ehca_err(&shca->ib_device, | |
e3722192 | 845 | "Cannot destroy internal PD. ret=%i", ret); |
fab97220 HS |
846 | |
847 | ret = ehca_destroy_eq(shca, &shca->eq); | |
848 | if (ret) | |
e3722192 | 849 | ehca_err(&shca->ib_device, "Cannot destroy EQ. ret=%i", ret); |
fab97220 HS |
850 | |
851 | ret = ehca_destroy_eq(shca, &shca->neq); | |
852 | if (ret) | |
e3722192 | 853 | ehca_err(&shca->ib_device, "Canot destroy NEQ. ret=%i", ret); |
fab97220 HS |
854 | |
855 | ib_dealloc_device(&shca->ib_device); | |
856 | ||
857 | spin_lock(&shca_list_lock); | |
858 | list_del(&shca->shca_list); | |
859 | spin_unlock(&shca_list_lock); | |
860 | ||
861 | return ret; | |
862 | } | |
863 | ||
864 | static struct of_device_id ehca_device_table[] = | |
865 | { | |
866 | { | |
867 | .name = "lhca", | |
868 | .compatible = "IBM,lhca", | |
869 | }, | |
870 | {}, | |
871 | }; | |
872 | ||
6b08f3ae JF |
873 | static struct of_platform_driver ehca_driver = { |
874 | .name = "ehca", | |
875 | .match_table = ehca_device_table, | |
876 | .probe = ehca_probe, | |
877 | .remove = ehca_remove, | |
fab97220 HS |
878 | }; |
879 | ||
880 | void ehca_poll_eqs(unsigned long data) | |
881 | { | |
882 | struct ehca_shca *shca; | |
883 | ||
884 | spin_lock(&shca_list_lock); | |
885 | list_for_each_entry(shca, &shca_list, shca_list) { | |
78d8d5f9 HNN |
886 | if (shca->eq.is_initialized) { |
887 | /* call deadman proc only if eq ptr does not change */ | |
888 | struct ehca_eq *eq = &shca->eq; | |
889 | int max = 3; | |
890 | volatile u64 q_ofs, q_ofs2; | |
891 | u64 flags; | |
892 | spin_lock_irqsave(&eq->spinlock, flags); | |
893 | q_ofs = eq->ipz_queue.current_q_offset; | |
894 | spin_unlock_irqrestore(&eq->spinlock, flags); | |
895 | do { | |
896 | spin_lock_irqsave(&eq->spinlock, flags); | |
897 | q_ofs2 = eq->ipz_queue.current_q_offset; | |
898 | spin_unlock_irqrestore(&eq->spinlock, flags); | |
899 | max--; | |
900 | } while (q_ofs == q_ofs2 && max > 0); | |
901 | if (q_ofs == q_ofs2) | |
902 | ehca_process_eq(shca, 0); | |
903 | } | |
fab97220 HS |
904 | } |
905 | mod_timer(&poll_eqs_timer, jiffies + HZ); | |
906 | spin_unlock(&shca_list_lock); | |
907 | } | |
908 | ||
909 | int __init ehca_module_init(void) | |
910 | { | |
911 | int ret; | |
912 | ||
913 | printk(KERN_INFO "eHCA Infiniband Device Driver " | |
39089e77 | 914 | "(Version " HCAD_VERSION ")\n"); |
fab97220 | 915 | |
2b94397a HNN |
916 | ret = ehca_create_comp_pool(); |
917 | if (ret) { | |
fab97220 HS |
918 | ehca_gen_err("Cannot create comp pool."); |
919 | return ret; | |
920 | } | |
921 | ||
2b94397a HNN |
922 | ret = ehca_create_slab_caches(); |
923 | if (ret) { | |
fab97220 HS |
924 | ehca_gen_err("Cannot create SLAB caches"); |
925 | ret = -ENOMEM; | |
926 | goto module_init1; | |
927 | } | |
928 | ||
2b94397a HNN |
929 | ret = ibmebus_register_driver(&ehca_driver); |
930 | if (ret) { | |
fab97220 HS |
931 | ehca_gen_err("Cannot register eHCA device driver"); |
932 | ret = -EINVAL; | |
933 | goto module_init2; | |
934 | } | |
935 | ||
bba9b601 JF |
936 | ret = sysfs_create_group(&ehca_driver.driver.kobj, &ehca_drv_attr_grp); |
937 | if (ret) /* only complain; we can live without attributes */ | |
938 | ehca_gen_err("Cannot create driver attributes ret=%d", ret); | |
fab97220 HS |
939 | |
940 | if (ehca_poll_all_eqs != 1) { | |
941 | ehca_gen_err("WARNING!!!"); | |
942 | ehca_gen_err("It is possible to lose interrupts."); | |
943 | } else { | |
944 | init_timer(&poll_eqs_timer); | |
945 | poll_eqs_timer.function = ehca_poll_eqs; | |
946 | poll_eqs_timer.expires = jiffies + HZ; | |
947 | add_timer(&poll_eqs_timer); | |
948 | } | |
949 | ||
950 | return 0; | |
951 | ||
952 | module_init2: | |
953 | ehca_destroy_slab_caches(); | |
954 | ||
955 | module_init1: | |
956 | ehca_destroy_comp_pool(); | |
957 | return ret; | |
958 | }; | |
959 | ||
960 | void __exit ehca_module_exit(void) | |
961 | { | |
962 | if (ehca_poll_all_eqs == 1) | |
963 | del_timer_sync(&poll_eqs_timer); | |
964 | ||
bba9b601 | 965 | sysfs_remove_group(&ehca_driver.driver.kobj, &ehca_drv_attr_grp); |
fab97220 HS |
966 | ibmebus_unregister_driver(&ehca_driver); |
967 | ||
968 | ehca_destroy_slab_caches(); | |
969 | ||
970 | ehca_destroy_comp_pool(); | |
971 | ||
972 | idr_destroy(&ehca_cq_idr); | |
973 | idr_destroy(&ehca_qp_idr); | |
974 | }; | |
975 | ||
976 | module_init(ehca_module_init); | |
977 | module_exit(ehca_module_exit); |