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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 | |
4faf7757 | 46 | |
fab97220 HS |
47 | #include "ehca_classes.h" |
48 | #include "ehca_iverbs.h" | |
49 | #include "ehca_mrmw.h" | |
50 | #include "ehca_tools.h" | |
51 | #include "hcp_if.h" | |
52 | ||
3d758a4a | 53 | #define HCAD_VERSION "0025" |
39089e77 | 54 | |
fab97220 HS |
55 | MODULE_LICENSE("Dual BSD/GPL"); |
56 | MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>"); | |
57 | MODULE_DESCRIPTION("IBM eServer HCA InfiniBand Device Driver"); | |
39089e77 | 58 | MODULE_VERSION(HCAD_VERSION); |
fab97220 HS |
59 | |
60 | int ehca_open_aqp1 = 0; | |
61 | int ehca_debug_level = 0; | |
62 | int ehca_hw_level = 0; | |
63 | int ehca_nr_ports = 2; | |
64 | int ehca_use_hp_mr = 0; | |
65 | int ehca_port_act_time = 30; | |
66 | int ehca_poll_all_eqs = 1; | |
67 | int ehca_static_rate = -1; | |
4e430dcb | 68 | int ehca_scaling_code = 0; |
8da9ee9c | 69 | int ehca_mr_largepage = 1; |
4faf7757 | 70 | int ehca_lock_hcalls = -1; |
fab97220 | 71 | |
339e2640 AB |
72 | module_param_named(open_aqp1, ehca_open_aqp1, int, S_IRUGO); |
73 | module_param_named(debug_level, ehca_debug_level, int, S_IRUGO); | |
74 | module_param_named(hw_level, ehca_hw_level, int, S_IRUGO); | |
75 | module_param_named(nr_ports, ehca_nr_ports, int, S_IRUGO); | |
76 | module_param_named(use_hp_mr, ehca_use_hp_mr, int, S_IRUGO); | |
77 | module_param_named(port_act_time, ehca_port_act_time, int, S_IRUGO); | |
78 | module_param_named(poll_all_eqs, ehca_poll_all_eqs, int, S_IRUGO); | |
79 | module_param_named(static_rate, ehca_static_rate, int, S_IRUGO); | |
80 | module_param_named(scaling_code, ehca_scaling_code, int, S_IRUGO); | |
81 | module_param_named(mr_largepage, ehca_mr_largepage, int, S_IRUGO); | |
4faf7757 | 82 | module_param_named(lock_hcalls, ehca_lock_hcalls, bool, S_IRUGO); |
fab97220 HS |
83 | |
84 | MODULE_PARM_DESC(open_aqp1, | |
85 | "AQP1 on startup (0: no (default), 1: yes)"); | |
86 | MODULE_PARM_DESC(debug_level, | |
87 | "debug level" | |
88 | " (0: no debug traces (default), 1: with debug traces)"); | |
89 | MODULE_PARM_DESC(hw_level, | |
90 | "hardware level" | |
91 | " (0: autosensing (default), 1: v. 0.20, 2: v. 0.21)"); | |
92 | MODULE_PARM_DESC(nr_ports, | |
bbdd267e HNN |
93 | "number of connected ports (-1: autodetect, 1: port one only, " |
94 | "2: two ports (default)"); | |
fab97220 HS |
95 | MODULE_PARM_DESC(use_hp_mr, |
96 | "high performance MRs (0: no (default), 1: yes)"); | |
97 | MODULE_PARM_DESC(port_act_time, | |
98 | "time to wait for port activation (default: 30 sec)"); | |
99 | MODULE_PARM_DESC(poll_all_eqs, | |
100 | "polls all event queues periodically" | |
101 | " (0: no, 1: yes (default))"); | |
102 | MODULE_PARM_DESC(static_rate, | |
103 | "set permanent static rate (default: disabled)"); | |
4fd30060 | 104 | MODULE_PARM_DESC(scaling_code, |
b8a3ba55 | 105 | "set scaling code (0: disabled/default, 1: enabled)"); |
5bb7d929 HNN |
106 | MODULE_PARM_DESC(mr_largepage, |
107 | "use large page for MR (0: use PAGE_SIZE (default), " | |
108 | "1: use large page depending on MR size"); | |
4faf7757 JF |
109 | MODULE_PARM_DESC(lock_hcalls, |
110 | "serialize all hCalls made by the driver " | |
111 | "(default: autodetect)"); | |
fab97220 | 112 | |
26ed687f JF |
113 | DEFINE_RWLOCK(ehca_qp_idr_lock); |
114 | DEFINE_RWLOCK(ehca_cq_idr_lock); | |
fab97220 HS |
115 | DEFINE_IDR(ehca_qp_idr); |
116 | DEFINE_IDR(ehca_cq_idr); | |
117 | ||
9844b71b JF |
118 | static LIST_HEAD(shca_list); /* list of all registered ehcas */ |
119 | static DEFINE_SPINLOCK(shca_list_lock); | |
fab97220 HS |
120 | |
121 | static struct timer_list poll_eqs_timer; | |
122 | ||
7e28db5d | 123 | #ifdef CONFIG_PPC_64K_PAGES |
2b94397a | 124 | static struct kmem_cache *ctblk_cache; |
7e28db5d | 125 | |
f2d91361 | 126 | void *ehca_alloc_fw_ctrlblock(gfp_t flags) |
7e28db5d | 127 | { |
f2d91361 | 128 | void *ret = kmem_cache_zalloc(ctblk_cache, flags); |
7e28db5d HNN |
129 | if (!ret) |
130 | ehca_gen_err("Out of memory for ctblk"); | |
131 | return ret; | |
132 | } | |
133 | ||
134 | void ehca_free_fw_ctrlblock(void *ptr) | |
135 | { | |
136 | if (ptr) | |
137 | kmem_cache_free(ctblk_cache, ptr); | |
138 | ||
139 | } | |
140 | #endif | |
141 | ||
51d2bfbd HNN |
142 | int ehca2ib_return_code(u64 ehca_rc) |
143 | { | |
144 | switch (ehca_rc) { | |
145 | case H_SUCCESS: | |
146 | return 0; | |
147 | case H_RESOURCE: /* Resource in use */ | |
148 | case H_BUSY: | |
149 | return -EBUSY; | |
150 | case H_NOT_ENOUGH_RESOURCES: /* insufficient resources */ | |
151 | case H_CONSTRAINED: /* resource constraint */ | |
152 | case H_NO_MEM: | |
153 | return -ENOMEM; | |
154 | default: | |
155 | return -EINVAL; | |
156 | } | |
157 | } | |
158 | ||
fab97220 HS |
159 | static int ehca_create_slab_caches(void) |
160 | { | |
161 | int ret; | |
162 | ||
163 | ret = ehca_init_pd_cache(); | |
164 | if (ret) { | |
165 | ehca_gen_err("Cannot create PD SLAB cache."); | |
166 | return ret; | |
167 | } | |
168 | ||
169 | ret = ehca_init_cq_cache(); | |
170 | if (ret) { | |
171 | ehca_gen_err("Cannot create CQ SLAB cache."); | |
172 | goto create_slab_caches2; | |
173 | } | |
174 | ||
175 | ret = ehca_init_qp_cache(); | |
176 | if (ret) { | |
177 | ehca_gen_err("Cannot create QP SLAB cache."); | |
178 | goto create_slab_caches3; | |
179 | } | |
180 | ||
181 | ret = ehca_init_av_cache(); | |
182 | if (ret) { | |
183 | ehca_gen_err("Cannot create AV SLAB cache."); | |
184 | goto create_slab_caches4; | |
185 | } | |
186 | ||
187 | ret = ehca_init_mrmw_cache(); | |
188 | if (ret) { | |
189 | ehca_gen_err("Cannot create MR&MW SLAB cache."); | |
190 | goto create_slab_caches5; | |
191 | } | |
192 | ||
e2f81daf SR |
193 | ret = ehca_init_small_qp_cache(); |
194 | if (ret) { | |
195 | ehca_gen_err("Cannot create small queue SLAB cache."); | |
196 | goto create_slab_caches6; | |
197 | } | |
198 | ||
7e28db5d HNN |
199 | #ifdef CONFIG_PPC_64K_PAGES |
200 | ctblk_cache = kmem_cache_create("ehca_cache_ctblk", | |
201 | EHCA_PAGESIZE, H_CB_ALIGNMENT, | |
202 | SLAB_HWCACHE_ALIGN, | |
20c2df83 | 203 | NULL); |
7e28db5d HNN |
204 | if (!ctblk_cache) { |
205 | ehca_gen_err("Cannot create ctblk SLAB cache."); | |
e2f81daf SR |
206 | ehca_cleanup_small_qp_cache(); |
207 | goto create_slab_caches6; | |
7e28db5d HNN |
208 | } |
209 | #endif | |
fab97220 HS |
210 | return 0; |
211 | ||
e2f81daf SR |
212 | create_slab_caches6: |
213 | ehca_cleanup_mrmw_cache(); | |
214 | ||
fab97220 HS |
215 | create_slab_caches5: |
216 | ehca_cleanup_av_cache(); | |
217 | ||
218 | create_slab_caches4: | |
219 | ehca_cleanup_qp_cache(); | |
220 | ||
221 | create_slab_caches3: | |
222 | ehca_cleanup_cq_cache(); | |
223 | ||
224 | create_slab_caches2: | |
225 | ehca_cleanup_pd_cache(); | |
226 | ||
227 | return ret; | |
228 | } | |
229 | ||
230 | static void ehca_destroy_slab_caches(void) | |
231 | { | |
e2f81daf | 232 | ehca_cleanup_small_qp_cache(); |
fab97220 HS |
233 | ehca_cleanup_mrmw_cache(); |
234 | ehca_cleanup_av_cache(); | |
235 | ehca_cleanup_qp_cache(); | |
236 | ehca_cleanup_cq_cache(); | |
237 | ehca_cleanup_pd_cache(); | |
7e28db5d HNN |
238 | #ifdef CONFIG_PPC_64K_PAGES |
239 | if (ctblk_cache) | |
240 | kmem_cache_destroy(ctblk_cache); | |
241 | #endif | |
fab97220 HS |
242 | } |
243 | ||
2b94397a HNN |
244 | #define EHCA_HCAAVER EHCA_BMASK_IBM(32, 39) |
245 | #define EHCA_REVID EHCA_BMASK_IBM(40, 63) | |
fab97220 | 246 | |
91f13aa3 JF |
247 | static struct cap_descr { |
248 | u64 mask; | |
249 | char *descr; | |
250 | } hca_cap_descr[] = { | |
251 | { HCA_CAP_AH_PORT_NR_CHECK, "HCA_CAP_AH_PORT_NR_CHECK" }, | |
252 | { HCA_CAP_ATOMIC, "HCA_CAP_ATOMIC" }, | |
253 | { HCA_CAP_AUTO_PATH_MIG, "HCA_CAP_AUTO_PATH_MIG" }, | |
254 | { HCA_CAP_BAD_P_KEY_CTR, "HCA_CAP_BAD_P_KEY_CTR" }, | |
255 | { HCA_CAP_SQD_RTS_PORT_CHANGE, "HCA_CAP_SQD_RTS_PORT_CHANGE" }, | |
256 | { HCA_CAP_CUR_QP_STATE_MOD, "HCA_CAP_CUR_QP_STATE_MOD" }, | |
257 | { HCA_CAP_INIT_TYPE, "HCA_CAP_INIT_TYPE" }, | |
258 | { HCA_CAP_PORT_ACTIVE_EVENT, "HCA_CAP_PORT_ACTIVE_EVENT" }, | |
259 | { HCA_CAP_Q_KEY_VIOL_CTR, "HCA_CAP_Q_KEY_VIOL_CTR" }, | |
260 | { HCA_CAP_WQE_RESIZE, "HCA_CAP_WQE_RESIZE" }, | |
261 | { HCA_CAP_RAW_PACKET_MCAST, "HCA_CAP_RAW_PACKET_MCAST" }, | |
262 | { HCA_CAP_SHUTDOWN_PORT, "HCA_CAP_SHUTDOWN_PORT" }, | |
263 | { HCA_CAP_RC_LL_QP, "HCA_CAP_RC_LL_QP" }, | |
264 | { HCA_CAP_SRQ, "HCA_CAP_SRQ" }, | |
265 | { HCA_CAP_UD_LL_QP, "HCA_CAP_UD_LL_QP" }, | |
266 | { HCA_CAP_RESIZE_MR, "HCA_CAP_RESIZE_MR" }, | |
267 | { HCA_CAP_MINI_QP, "HCA_CAP_MINI_QP" }, | |
4faf7757 | 268 | { HCA_CAP_H_ALLOC_RES_SYNC, "HCA_CAP_H_ALLOC_RES_SYNC" }, |
91f13aa3 JF |
269 | }; |
270 | ||
abc39d36 | 271 | static int ehca_sense_attributes(struct ehca_shca *shca) |
fab97220 | 272 | { |
91f13aa3 | 273 | int i, ret = 0; |
fab97220 HS |
274 | u64 h_ret; |
275 | struct hipz_query_hca *rblock; | |
91f13aa3 | 276 | struct hipz_query_port *port; |
fab97220 | 277 | |
abc39d36 JF |
278 | static const u32 pgsize_map[] = { |
279 | HCA_CAP_MR_PGSIZE_4K, 0x1000, | |
280 | HCA_CAP_MR_PGSIZE_64K, 0x10000, | |
281 | HCA_CAP_MR_PGSIZE_1M, 0x100000, | |
282 | HCA_CAP_MR_PGSIZE_16M, 0x1000000, | |
283 | }; | |
284 | ||
f2d91361 | 285 | rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); |
fab97220 HS |
286 | if (!rblock) { |
287 | ehca_gen_err("Cannot allocate rblock memory."); | |
288 | return -ENOMEM; | |
289 | } | |
290 | ||
291 | h_ret = hipz_h_query_hca(shca->ipz_hca_handle, rblock); | |
292 | if (h_ret != H_SUCCESS) { | |
e3722192 | 293 | ehca_gen_err("Cannot query device properties. h_ret=%li", |
fab97220 HS |
294 | h_ret); |
295 | ret = -EPERM; | |
91f13aa3 | 296 | goto sense_attributes1; |
fab97220 HS |
297 | } |
298 | ||
299 | if (ehca_nr_ports == 1) | |
300 | shca->num_ports = 1; | |
301 | else | |
302 | shca->num_ports = (u8)rblock->num_ports; | |
303 | ||
304 | ehca_gen_dbg(" ... found %x ports", rblock->num_ports); | |
305 | ||
306 | if (ehca_hw_level == 0) { | |
307 | u32 hcaaver; | |
308 | u32 revid; | |
309 | ||
310 | hcaaver = EHCA_BMASK_GET(EHCA_HCAAVER, rblock->hw_ver); | |
311 | revid = EHCA_BMASK_GET(EHCA_REVID, rblock->hw_ver); | |
312 | ||
313 | ehca_gen_dbg(" ... hardware version=%x:%x", hcaaver, revid); | |
314 | ||
fbb9318b JF |
315 | if (hcaaver == 1) { |
316 | if (revid <= 3) | |
317 | shca->hw_level = 0x10 | (revid + 1); | |
318 | else | |
319 | shca->hw_level = 0x14; | |
320 | } else if (hcaaver == 2) { | |
321 | if (revid == 0) | |
322 | shca->hw_level = 0x21; | |
323 | else if (revid == 0x10) | |
324 | shca->hw_level = 0x22; | |
325 | else if (revid == 0x20 || revid == 0x21) | |
326 | shca->hw_level = 0x23; | |
327 | } | |
328 | ||
329 | if (!shca->hw_level) { | |
91f13aa3 JF |
330 | ehca_gen_warn("unknown hardware version" |
331 | " - assuming default level"); | |
332 | shca->hw_level = 0x22; | |
333 | } | |
fbb9318b JF |
334 | } else |
335 | shca->hw_level = ehca_hw_level; | |
fab97220 HS |
336 | ehca_gen_dbg(" ... hardware level=%x", shca->hw_level); |
337 | ||
91f13aa3 JF |
338 | shca->hca_cap = rblock->hca_cap_indicators; |
339 | ehca_gen_dbg(" ... HCA capabilities:"); | |
340 | for (i = 0; i < ARRAY_SIZE(hca_cap_descr); i++) | |
341 | if (EHCA_BMASK_GET(hca_cap_descr[i].mask, shca->hca_cap)) | |
342 | ehca_gen_dbg(" %s", hca_cap_descr[i].descr); | |
343 | ||
4faf7757 JF |
344 | /* Autodetect hCall locking -- the "H_ALLOC_RESOURCE synced" flag is |
345 | * a firmware property, so it's valid across all adapters | |
346 | */ | |
347 | if (ehca_lock_hcalls == -1) | |
348 | ehca_lock_hcalls = !(shca->hca_cap & HCA_CAP_H_ALLOC_RES_SYNC); | |
349 | ||
abc39d36 JF |
350 | /* translate supported MR page sizes; always support 4K */ |
351 | shca->hca_cap_mr_pgsize = EHCA_PAGESIZE; | |
352 | if (ehca_mr_largepage) { /* support extra sizes only if enabled */ | |
353 | for (i = 0; i < ARRAY_SIZE(pgsize_map); i += 2) | |
354 | if (rblock->memory_page_size_supported & pgsize_map[i]) | |
355 | shca->hca_cap_mr_pgsize |= pgsize_map[i + 1]; | |
356 | } | |
5bb7d929 | 357 | |
abc39d36 | 358 | /* query max MTU from first port -- it's the same for all ports */ |
2b94397a | 359 | port = (struct hipz_query_port *)rblock; |
91f13aa3 JF |
360 | h_ret = hipz_h_query_port(shca->ipz_hca_handle, 1, port); |
361 | if (h_ret != H_SUCCESS) { | |
e3722192 | 362 | ehca_gen_err("Cannot query port properties. h_ret=%li", |
91f13aa3 JF |
363 | h_ret); |
364 | ret = -EPERM; | |
365 | goto sense_attributes1; | |
366 | } | |
367 | ||
368 | shca->max_mtu = port->max_mtu; | |
369 | ||
370 | sense_attributes1: | |
7e28db5d | 371 | ehca_free_fw_ctrlblock(rblock); |
fab97220 HS |
372 | return ret; |
373 | } | |
374 | ||
375 | static int init_node_guid(struct ehca_shca *shca) | |
376 | { | |
377 | int ret = 0; | |
378 | struct hipz_query_hca *rblock; | |
379 | ||
f2d91361 | 380 | rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); |
fab97220 HS |
381 | if (!rblock) { |
382 | ehca_err(&shca->ib_device, "Can't allocate rblock memory."); | |
383 | return -ENOMEM; | |
384 | } | |
385 | ||
386 | if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) { | |
387 | ehca_err(&shca->ib_device, "Can't query device properties"); | |
388 | ret = -EINVAL; | |
389 | goto init_node_guid1; | |
390 | } | |
391 | ||
392 | memcpy(&shca->ib_device.node_guid, &rblock->node_guid, sizeof(u64)); | |
393 | ||
394 | init_node_guid1: | |
7e28db5d | 395 | ehca_free_fw_ctrlblock(rblock); |
fab97220 HS |
396 | return ret; |
397 | } | |
398 | ||
0f248d9c | 399 | int ehca_init_device(struct ehca_shca *shca) |
fab97220 HS |
400 | { |
401 | int ret; | |
402 | ||
403 | ret = init_node_guid(shca); | |
404 | if (ret) | |
405 | return ret; | |
406 | ||
407 | strlcpy(shca->ib_device.name, "ehca%d", IB_DEVICE_NAME_MAX); | |
408 | shca->ib_device.owner = THIS_MODULE; | |
409 | ||
5281a4b8 | 410 | shca->ib_device.uverbs_abi_ver = 8; |
fab97220 HS |
411 | shca->ib_device.uverbs_cmd_mask = |
412 | (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | | |
413 | (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | | |
414 | (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | | |
415 | (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | | |
416 | (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | | |
417 | (1ull << IB_USER_VERBS_CMD_REG_MR) | | |
418 | (1ull << IB_USER_VERBS_CMD_DEREG_MR) | | |
419 | (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | | |
420 | (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | | |
421 | (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | | |
422 | (1ull << IB_USER_VERBS_CMD_CREATE_QP) | | |
423 | (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | | |
424 | (1ull << IB_USER_VERBS_CMD_QUERY_QP) | | |
425 | (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | | |
426 | (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | | |
427 | (1ull << IB_USER_VERBS_CMD_DETACH_MCAST); | |
428 | ||
07ebafba | 429 | shca->ib_device.node_type = RDMA_NODE_IB_CA; |
fab97220 | 430 | shca->ib_device.phys_port_cnt = shca->num_ports; |
f4fd0b22 | 431 | shca->ib_device.num_comp_vectors = 1; |
6b08f3ae | 432 | shca->ib_device.dma_device = &shca->ofdev->dev; |
fab97220 HS |
433 | shca->ib_device.query_device = ehca_query_device; |
434 | shca->ib_device.query_port = ehca_query_port; | |
435 | shca->ib_device.query_gid = ehca_query_gid; | |
436 | shca->ib_device.query_pkey = ehca_query_pkey; | |
437 | /* shca->in_device.modify_device = ehca_modify_device */ | |
438 | shca->ib_device.modify_port = ehca_modify_port; | |
439 | shca->ib_device.alloc_ucontext = ehca_alloc_ucontext; | |
440 | shca->ib_device.dealloc_ucontext = ehca_dealloc_ucontext; | |
441 | shca->ib_device.alloc_pd = ehca_alloc_pd; | |
442 | shca->ib_device.dealloc_pd = ehca_dealloc_pd; | |
443 | shca->ib_device.create_ah = ehca_create_ah; | |
444 | /* shca->ib_device.modify_ah = ehca_modify_ah; */ | |
445 | shca->ib_device.query_ah = ehca_query_ah; | |
446 | shca->ib_device.destroy_ah = ehca_destroy_ah; | |
447 | shca->ib_device.create_qp = ehca_create_qp; | |
448 | shca->ib_device.modify_qp = ehca_modify_qp; | |
449 | shca->ib_device.query_qp = ehca_query_qp; | |
450 | shca->ib_device.destroy_qp = ehca_destroy_qp; | |
451 | shca->ib_device.post_send = ehca_post_send; | |
452 | shca->ib_device.post_recv = ehca_post_recv; | |
453 | shca->ib_device.create_cq = ehca_create_cq; | |
454 | shca->ib_device.destroy_cq = ehca_destroy_cq; | |
455 | shca->ib_device.resize_cq = ehca_resize_cq; | |
456 | shca->ib_device.poll_cq = ehca_poll_cq; | |
457 | /* shca->ib_device.peek_cq = ehca_peek_cq; */ | |
458 | shca->ib_device.req_notify_cq = ehca_req_notify_cq; | |
459 | /* shca->ib_device.req_ncomp_notif = ehca_req_ncomp_notif; */ | |
460 | shca->ib_device.get_dma_mr = ehca_get_dma_mr; | |
461 | shca->ib_device.reg_phys_mr = ehca_reg_phys_mr; | |
462 | shca->ib_device.reg_user_mr = ehca_reg_user_mr; | |
463 | shca->ib_device.query_mr = ehca_query_mr; | |
464 | shca->ib_device.dereg_mr = ehca_dereg_mr; | |
465 | shca->ib_device.rereg_phys_mr = ehca_rereg_phys_mr; | |
466 | shca->ib_device.alloc_mw = ehca_alloc_mw; | |
467 | shca->ib_device.bind_mw = ehca_bind_mw; | |
468 | shca->ib_device.dealloc_mw = ehca_dealloc_mw; | |
469 | shca->ib_device.alloc_fmr = ehca_alloc_fmr; | |
470 | shca->ib_device.map_phys_fmr = ehca_map_phys_fmr; | |
471 | shca->ib_device.unmap_fmr = ehca_unmap_fmr; | |
472 | shca->ib_device.dealloc_fmr = ehca_dealloc_fmr; | |
473 | shca->ib_device.attach_mcast = ehca_attach_mcast; | |
474 | shca->ib_device.detach_mcast = ehca_detach_mcast; | |
2b5e6b12 | 475 | shca->ib_device.process_mad = ehca_process_mad; |
fab97220 HS |
476 | shca->ib_device.mmap = ehca_mmap; |
477 | ||
a6a12947 JF |
478 | if (EHCA_BMASK_GET(HCA_CAP_SRQ, shca->hca_cap)) { |
479 | shca->ib_device.uverbs_cmd_mask |= | |
480 | (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | | |
481 | (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | | |
482 | (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | | |
483 | (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ); | |
484 | ||
485 | shca->ib_device.create_srq = ehca_create_srq; | |
486 | shca->ib_device.modify_srq = ehca_modify_srq; | |
487 | shca->ib_device.query_srq = ehca_query_srq; | |
488 | shca->ib_device.destroy_srq = ehca_destroy_srq; | |
489 | shca->ib_device.post_srq_recv = ehca_post_srq_recv; | |
490 | } | |
491 | ||
fab97220 HS |
492 | return ret; |
493 | } | |
494 | ||
495 | static int ehca_create_aqp1(struct ehca_shca *shca, u32 port) | |
496 | { | |
497 | struct ehca_sport *sport = &shca->sport[port - 1]; | |
498 | struct ib_cq *ibcq; | |
499 | struct ib_qp *ibqp; | |
500 | struct ib_qp_init_attr qp_init_attr; | |
501 | int ret; | |
502 | ||
503 | if (sport->ibcq_aqp1) { | |
504 | ehca_err(&shca->ib_device, "AQP1 CQ is already created."); | |
505 | return -EPERM; | |
506 | } | |
507 | ||
2b94397a | 508 | ibcq = ib_create_cq(&shca->ib_device, NULL, NULL, (void *)(-1), 10, 0); |
fab97220 HS |
509 | if (IS_ERR(ibcq)) { |
510 | ehca_err(&shca->ib_device, "Cannot create AQP1 CQ."); | |
511 | return PTR_ERR(ibcq); | |
512 | } | |
513 | sport->ibcq_aqp1 = ibcq; | |
514 | ||
b8b50e35 | 515 | if (sport->ibqp_sqp[IB_QPT_GSI]) { |
fab97220 HS |
516 | ehca_err(&shca->ib_device, "AQP1 QP is already created."); |
517 | ret = -EPERM; | |
518 | goto create_aqp1; | |
519 | } | |
520 | ||
521 | memset(&qp_init_attr, 0, sizeof(struct ib_qp_init_attr)); | |
522 | qp_init_attr.send_cq = ibcq; | |
523 | qp_init_attr.recv_cq = ibcq; | |
524 | qp_init_attr.sq_sig_type = IB_SIGNAL_ALL_WR; | |
525 | qp_init_attr.cap.max_send_wr = 100; | |
526 | qp_init_attr.cap.max_recv_wr = 100; | |
527 | qp_init_attr.cap.max_send_sge = 2; | |
528 | qp_init_attr.cap.max_recv_sge = 1; | |
529 | qp_init_attr.qp_type = IB_QPT_GSI; | |
530 | qp_init_attr.port_num = port; | |
531 | qp_init_attr.qp_context = NULL; | |
532 | qp_init_attr.event_handler = NULL; | |
533 | qp_init_attr.srq = NULL; | |
534 | ||
535 | ibqp = ib_create_qp(&shca->pd->ib_pd, &qp_init_attr); | |
536 | if (IS_ERR(ibqp)) { | |
537 | ehca_err(&shca->ib_device, "Cannot create AQP1 QP."); | |
538 | ret = PTR_ERR(ibqp); | |
539 | goto create_aqp1; | |
540 | } | |
b8b50e35 | 541 | sport->ibqp_sqp[IB_QPT_GSI] = ibqp; |
fab97220 HS |
542 | |
543 | return 0; | |
544 | ||
545 | create_aqp1: | |
546 | ib_destroy_cq(sport->ibcq_aqp1); | |
547 | return ret; | |
548 | } | |
549 | ||
550 | static int ehca_destroy_aqp1(struct ehca_sport *sport) | |
551 | { | |
552 | int ret; | |
553 | ||
b8b50e35 | 554 | ret = ib_destroy_qp(sport->ibqp_sqp[IB_QPT_GSI]); |
fab97220 | 555 | if (ret) { |
e3722192 | 556 | ehca_gen_err("Cannot destroy AQP1 QP. ret=%i", ret); |
fab97220 HS |
557 | return ret; |
558 | } | |
559 | ||
560 | ret = ib_destroy_cq(sport->ibcq_aqp1); | |
561 | if (ret) | |
e3722192 | 562 | ehca_gen_err("Cannot destroy AQP1 CQ. ret=%i", ret); |
fab97220 HS |
563 | |
564 | return ret; | |
565 | } | |
566 | ||
567 | static ssize_t ehca_show_debug_level(struct device_driver *ddp, char *buf) | |
568 | { | |
78d8d5f9 HNN |
569 | return snprintf(buf, PAGE_SIZE, "%d\n", |
570 | ehca_debug_level); | |
fab97220 HS |
571 | } |
572 | ||
573 | static ssize_t ehca_store_debug_level(struct device_driver *ddp, | |
574 | const char *buf, size_t count) | |
575 | { | |
576 | int value = (*buf) - '0'; | |
577 | if (value >= 0 && value <= 9) | |
578 | ehca_debug_level = value; | |
579 | return 1; | |
580 | } | |
581 | ||
582 | DRIVER_ATTR(debug_level, S_IRUSR | S_IWUSR, | |
583 | ehca_show_debug_level, ehca_store_debug_level); | |
584 | ||
bba9b601 JF |
585 | static struct attribute *ehca_drv_attrs[] = { |
586 | &driver_attr_debug_level.attr, | |
587 | NULL | |
588 | }; | |
fab97220 | 589 | |
bba9b601 JF |
590 | static struct attribute_group ehca_drv_attr_grp = { |
591 | .attrs = ehca_drv_attrs | |
592 | }; | |
fab97220 | 593 | |
23b9c1ab GKH |
594 | static struct attribute_group *ehca_drv_attr_groups[] = { |
595 | &ehca_drv_attr_grp, | |
596 | NULL, | |
597 | }; | |
598 | ||
fab97220 HS |
599 | #define EHCA_RESOURCE_ATTR(name) \ |
600 | static ssize_t ehca_show_##name(struct device *dev, \ | |
601 | struct device_attribute *attr, \ | |
602 | char *buf) \ | |
603 | { \ | |
604 | struct ehca_shca *shca; \ | |
605 | struct hipz_query_hca *rblock; \ | |
606 | int data; \ | |
607 | \ | |
608 | shca = dev->driver_data; \ | |
609 | \ | |
f2d91361 | 610 | rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); \ |
fab97220 | 611 | if (!rblock) { \ |
898eb71c | 612 | dev_err(dev, "Can't allocate rblock memory.\n"); \ |
fab97220 HS |
613 | return 0; \ |
614 | } \ | |
615 | \ | |
616 | if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) { \ | |
898eb71c | 617 | dev_err(dev, "Can't query device properties\n"); \ |
7e28db5d | 618 | ehca_free_fw_ctrlblock(rblock); \ |
fab97220 HS |
619 | return 0; \ |
620 | } \ | |
621 | \ | |
622 | data = rblock->name; \ | |
7e28db5d | 623 | ehca_free_fw_ctrlblock(rblock); \ |
fab97220 HS |
624 | \ |
625 | if ((strcmp(#name, "num_ports") == 0) && (ehca_nr_ports == 1)) \ | |
626 | return snprintf(buf, 256, "1\n"); \ | |
627 | else \ | |
628 | return snprintf(buf, 256, "%d\n", data); \ | |
629 | \ | |
630 | } \ | |
631 | static DEVICE_ATTR(name, S_IRUGO, ehca_show_##name, NULL); | |
632 | ||
633 | EHCA_RESOURCE_ATTR(num_ports); | |
634 | EHCA_RESOURCE_ATTR(hw_ver); | |
635 | EHCA_RESOURCE_ATTR(max_eq); | |
636 | EHCA_RESOURCE_ATTR(cur_eq); | |
637 | EHCA_RESOURCE_ATTR(max_cq); | |
638 | EHCA_RESOURCE_ATTR(cur_cq); | |
639 | EHCA_RESOURCE_ATTR(max_qp); | |
640 | EHCA_RESOURCE_ATTR(cur_qp); | |
641 | EHCA_RESOURCE_ATTR(max_mr); | |
642 | EHCA_RESOURCE_ATTR(cur_mr); | |
643 | EHCA_RESOURCE_ATTR(max_mw); | |
644 | EHCA_RESOURCE_ATTR(cur_mw); | |
645 | EHCA_RESOURCE_ATTR(max_pd); | |
646 | EHCA_RESOURCE_ATTR(max_ah); | |
647 | ||
648 | static ssize_t ehca_show_adapter_handle(struct device *dev, | |
649 | struct device_attribute *attr, | |
650 | char *buf) | |
651 | { | |
652 | struct ehca_shca *shca = dev->driver_data; | |
653 | ||
654 | return sprintf(buf, "%lx\n", shca->ipz_hca_handle.handle); | |
655 | ||
656 | } | |
657 | static DEVICE_ATTR(adapter_handle, S_IRUGO, ehca_show_adapter_handle, NULL); | |
658 | ||
5bb7d929 HNN |
659 | static ssize_t ehca_show_mr_largepage(struct device *dev, |
660 | struct device_attribute *attr, | |
661 | char *buf) | |
662 | { | |
663 | return sprintf(buf, "%d\n", ehca_mr_largepage); | |
664 | } | |
665 | static DEVICE_ATTR(mr_largepage, S_IRUGO, ehca_show_mr_largepage, NULL); | |
666 | ||
bba9b601 JF |
667 | static struct attribute *ehca_dev_attrs[] = { |
668 | &dev_attr_adapter_handle.attr, | |
669 | &dev_attr_num_ports.attr, | |
670 | &dev_attr_hw_ver.attr, | |
671 | &dev_attr_max_eq.attr, | |
672 | &dev_attr_cur_eq.attr, | |
673 | &dev_attr_max_cq.attr, | |
674 | &dev_attr_cur_cq.attr, | |
675 | &dev_attr_max_qp.attr, | |
676 | &dev_attr_cur_qp.attr, | |
677 | &dev_attr_max_mr.attr, | |
678 | &dev_attr_cur_mr.attr, | |
679 | &dev_attr_max_mw.attr, | |
680 | &dev_attr_cur_mw.attr, | |
681 | &dev_attr_max_pd.attr, | |
682 | &dev_attr_max_ah.attr, | |
5bb7d929 | 683 | &dev_attr_mr_largepage.attr, |
bba9b601 JF |
684 | NULL |
685 | }; | |
fab97220 | 686 | |
bba9b601 JF |
687 | static struct attribute_group ehca_dev_attr_grp = { |
688 | .attrs = ehca_dev_attrs | |
689 | }; | |
fab97220 | 690 | |
6b08f3ae | 691 | static int __devinit ehca_probe(struct of_device *dev, |
fab97220 HS |
692 | const struct of_device_id *id) |
693 | { | |
694 | struct ehca_shca *shca; | |
a7edd0e6 | 695 | const u64 *handle; |
fab97220 | 696 | struct ib_pd *ibpd; |
bbdd267e | 697 | int ret, i; |
fab97220 | 698 | |
6b08f3ae | 699 | handle = of_get_property(dev->node, "ibm,hca-handle", NULL); |
fab97220 HS |
700 | if (!handle) { |
701 | ehca_gen_err("Cannot get eHCA handle for adapter: %s.", | |
6b08f3ae | 702 | dev->node->full_name); |
fab97220 HS |
703 | return -ENODEV; |
704 | } | |
705 | ||
706 | if (!(*handle)) { | |
707 | ehca_gen_err("Wrong eHCA handle for adapter: %s.", | |
6b08f3ae | 708 | dev->node->full_name); |
fab97220 HS |
709 | return -ENODEV; |
710 | } | |
711 | ||
712 | shca = (struct ehca_shca *)ib_alloc_device(sizeof(*shca)); | |
713 | if (!shca) { | |
714 | ehca_gen_err("Cannot allocate shca memory."); | |
715 | return -ENOMEM; | |
716 | } | |
c4ed790d | 717 | mutex_init(&shca->modify_mutex); |
bbdd267e HNN |
718 | for (i = 0; i < ARRAY_SIZE(shca->sport); i++) |
719 | spin_lock_init(&shca->sport[i].mod_sqp_lock); | |
fab97220 | 720 | |
6b08f3ae | 721 | shca->ofdev = dev; |
fab97220 | 722 | shca->ipz_hca_handle.handle = *handle; |
6b08f3ae | 723 | dev->dev.driver_data = shca; |
fab97220 HS |
724 | |
725 | ret = ehca_sense_attributes(shca); | |
726 | if (ret < 0) { | |
727 | ehca_gen_err("Cannot sense eHCA attributes."); | |
728 | goto probe1; | |
729 | } | |
730 | ||
0f248d9c | 731 | ret = ehca_init_device(shca); |
fab97220 | 732 | if (ret) { |
0f248d9c | 733 | ehca_gen_err("Cannot init ehca device struct"); |
fab97220 HS |
734 | goto probe1; |
735 | } | |
736 | ||
737 | /* create event queues */ | |
738 | ret = ehca_create_eq(shca, &shca->eq, EHCA_EQ, 2048); | |
739 | if (ret) { | |
740 | ehca_err(&shca->ib_device, "Cannot create EQ."); | |
0f248d9c | 741 | goto probe1; |
fab97220 HS |
742 | } |
743 | ||
744 | ret = ehca_create_eq(shca, &shca->neq, EHCA_NEQ, 513); | |
745 | if (ret) { | |
746 | ehca_err(&shca->ib_device, "Cannot create NEQ."); | |
747 | goto probe3; | |
748 | } | |
749 | ||
750 | /* create internal protection domain */ | |
2b94397a | 751 | ibpd = ehca_alloc_pd(&shca->ib_device, (void *)(-1), NULL); |
fab97220 HS |
752 | if (IS_ERR(ibpd)) { |
753 | ehca_err(&shca->ib_device, "Cannot create internal PD."); | |
754 | ret = PTR_ERR(ibpd); | |
755 | goto probe4; | |
756 | } | |
757 | ||
758 | shca->pd = container_of(ibpd, struct ehca_pd, ib_pd); | |
759 | shca->pd->ib_pd.device = &shca->ib_device; | |
760 | ||
761 | /* create internal max MR */ | |
762 | ret = ehca_reg_internal_maxmr(shca, shca->pd, &shca->maxmr); | |
763 | ||
764 | if (ret) { | |
e3722192 | 765 | ehca_err(&shca->ib_device, "Cannot create internal MR ret=%i", |
fab97220 HS |
766 | ret); |
767 | goto probe5; | |
768 | } | |
769 | ||
0f248d9c HNN |
770 | ret = ib_register_device(&shca->ib_device); |
771 | if (ret) { | |
772 | ehca_err(&shca->ib_device, | |
e3722192 | 773 | "ib_register_device() failed ret=%i", ret); |
0f248d9c HNN |
774 | goto probe6; |
775 | } | |
776 | ||
fab97220 HS |
777 | /* create AQP1 for port 1 */ |
778 | if (ehca_open_aqp1 == 1) { | |
779 | shca->sport[0].port_state = IB_PORT_DOWN; | |
780 | ret = ehca_create_aqp1(shca, 1); | |
781 | if (ret) { | |
782 | ehca_err(&shca->ib_device, | |
783 | "Cannot create AQP1 for port 1."); | |
0f248d9c | 784 | goto probe7; |
fab97220 HS |
785 | } |
786 | } | |
787 | ||
788 | /* create AQP1 for port 2 */ | |
789 | if ((ehca_open_aqp1 == 1) && (shca->num_ports == 2)) { | |
790 | shca->sport[1].port_state = IB_PORT_DOWN; | |
791 | ret = ehca_create_aqp1(shca, 2); | |
792 | if (ret) { | |
793 | ehca_err(&shca->ib_device, | |
794 | "Cannot create AQP1 for port 2."); | |
0f248d9c | 795 | goto probe8; |
fab97220 HS |
796 | } |
797 | } | |
798 | ||
6b08f3ae | 799 | ret = sysfs_create_group(&dev->dev.kobj, &ehca_dev_attr_grp); |
bba9b601 JF |
800 | if (ret) /* only complain; we can live without attributes */ |
801 | ehca_err(&shca->ib_device, | |
802 | "Cannot create device attributes ret=%d", ret); | |
fab97220 HS |
803 | |
804 | spin_lock(&shca_list_lock); | |
805 | list_add(&shca->shca_list, &shca_list); | |
806 | spin_unlock(&shca_list_lock); | |
807 | ||
808 | return 0; | |
809 | ||
0f248d9c | 810 | probe8: |
fab97220 HS |
811 | ret = ehca_destroy_aqp1(&shca->sport[0]); |
812 | if (ret) | |
813 | ehca_err(&shca->ib_device, | |
e3722192 | 814 | "Cannot destroy AQP1 for port 1. ret=%i", ret); |
fab97220 | 815 | |
0f248d9c HNN |
816 | probe7: |
817 | ib_unregister_device(&shca->ib_device); | |
818 | ||
fab97220 HS |
819 | probe6: |
820 | ret = ehca_dereg_internal_maxmr(shca); | |
821 | if (ret) | |
822 | ehca_err(&shca->ib_device, | |
823 | "Cannot destroy internal MR. ret=%x", ret); | |
824 | ||
825 | probe5: | |
826 | ret = ehca_dealloc_pd(&shca->pd->ib_pd); | |
827 | if (ret) | |
828 | ehca_err(&shca->ib_device, | |
829 | "Cannot destroy internal PD. ret=%x", ret); | |
830 | ||
831 | probe4: | |
832 | ret = ehca_destroy_eq(shca, &shca->neq); | |
833 | if (ret) | |
834 | ehca_err(&shca->ib_device, | |
835 | "Cannot destroy NEQ. ret=%x", ret); | |
836 | ||
837 | probe3: | |
838 | ret = ehca_destroy_eq(shca, &shca->eq); | |
839 | if (ret) | |
840 | ehca_err(&shca->ib_device, | |
841 | "Cannot destroy EQ. ret=%x", ret); | |
842 | ||
fab97220 HS |
843 | probe1: |
844 | ib_dealloc_device(&shca->ib_device); | |
845 | ||
846 | return -EINVAL; | |
847 | } | |
848 | ||
6b08f3ae | 849 | static int __devexit ehca_remove(struct of_device *dev) |
fab97220 | 850 | { |
6b08f3ae | 851 | struct ehca_shca *shca = dev->dev.driver_data; |
fab97220 HS |
852 | int ret; |
853 | ||
6b08f3ae | 854 | sysfs_remove_group(&dev->dev.kobj, &ehca_dev_attr_grp); |
fab97220 HS |
855 | |
856 | if (ehca_open_aqp1 == 1) { | |
857 | int i; | |
858 | for (i = 0; i < shca->num_ports; i++) { | |
859 | ret = ehca_destroy_aqp1(&shca->sport[i]); | |
860 | if (ret) | |
861 | ehca_err(&shca->ib_device, | |
862 | "Cannot destroy AQP1 for port %x " | |
e3722192 | 863 | "ret=%i", ret, i); |
fab97220 HS |
864 | } |
865 | } | |
866 | ||
867 | ib_unregister_device(&shca->ib_device); | |
868 | ||
869 | ret = ehca_dereg_internal_maxmr(shca); | |
870 | if (ret) | |
871 | ehca_err(&shca->ib_device, | |
e3722192 | 872 | "Cannot destroy internal MR. ret=%i", ret); |
fab97220 HS |
873 | |
874 | ret = ehca_dealloc_pd(&shca->pd->ib_pd); | |
875 | if (ret) | |
876 | ehca_err(&shca->ib_device, | |
e3722192 | 877 | "Cannot destroy internal PD. ret=%i", ret); |
fab97220 HS |
878 | |
879 | ret = ehca_destroy_eq(shca, &shca->eq); | |
880 | if (ret) | |
e3722192 | 881 | ehca_err(&shca->ib_device, "Cannot destroy EQ. ret=%i", ret); |
fab97220 HS |
882 | |
883 | ret = ehca_destroy_eq(shca, &shca->neq); | |
884 | if (ret) | |
e3722192 | 885 | ehca_err(&shca->ib_device, "Canot destroy NEQ. ret=%i", ret); |
fab97220 HS |
886 | |
887 | ib_dealloc_device(&shca->ib_device); | |
888 | ||
889 | spin_lock(&shca_list_lock); | |
890 | list_del(&shca->shca_list); | |
891 | spin_unlock(&shca_list_lock); | |
892 | ||
893 | return ret; | |
894 | } | |
895 | ||
896 | static struct of_device_id ehca_device_table[] = | |
897 | { | |
898 | { | |
899 | .name = "lhca", | |
900 | .compatible = "IBM,lhca", | |
901 | }, | |
902 | {}, | |
903 | }; | |
904 | ||
6b08f3ae JF |
905 | static struct of_platform_driver ehca_driver = { |
906 | .name = "ehca", | |
907 | .match_table = ehca_device_table, | |
908 | .probe = ehca_probe, | |
909 | .remove = ehca_remove, | |
23b9c1ab GKH |
910 | .driver = { |
911 | .groups = ehca_drv_attr_groups, | |
912 | }, | |
fab97220 HS |
913 | }; |
914 | ||
915 | void ehca_poll_eqs(unsigned long data) | |
916 | { | |
917 | struct ehca_shca *shca; | |
918 | ||
919 | spin_lock(&shca_list_lock); | |
920 | list_for_each_entry(shca, &shca_list, shca_list) { | |
78d8d5f9 HNN |
921 | if (shca->eq.is_initialized) { |
922 | /* call deadman proc only if eq ptr does not change */ | |
923 | struct ehca_eq *eq = &shca->eq; | |
924 | int max = 3; | |
925 | volatile u64 q_ofs, q_ofs2; | |
926 | u64 flags; | |
927 | spin_lock_irqsave(&eq->spinlock, flags); | |
928 | q_ofs = eq->ipz_queue.current_q_offset; | |
929 | spin_unlock_irqrestore(&eq->spinlock, flags); | |
930 | do { | |
931 | spin_lock_irqsave(&eq->spinlock, flags); | |
932 | q_ofs2 = eq->ipz_queue.current_q_offset; | |
933 | spin_unlock_irqrestore(&eq->spinlock, flags); | |
934 | max--; | |
935 | } while (q_ofs == q_ofs2 && max > 0); | |
936 | if (q_ofs == q_ofs2) | |
937 | ehca_process_eq(shca, 0); | |
938 | } | |
fab97220 | 939 | } |
1a7d2dce | 940 | mod_timer(&poll_eqs_timer, round_jiffies(jiffies + HZ)); |
fab97220 HS |
941 | spin_unlock(&shca_list_lock); |
942 | } | |
943 | ||
944 | int __init ehca_module_init(void) | |
945 | { | |
946 | int ret; | |
947 | ||
948 | printk(KERN_INFO "eHCA Infiniband Device Driver " | |
39089e77 | 949 | "(Version " HCAD_VERSION ")\n"); |
fab97220 | 950 | |
2b94397a HNN |
951 | ret = ehca_create_comp_pool(); |
952 | if (ret) { | |
fab97220 HS |
953 | ehca_gen_err("Cannot create comp pool."); |
954 | return ret; | |
955 | } | |
956 | ||
2b94397a HNN |
957 | ret = ehca_create_slab_caches(); |
958 | if (ret) { | |
fab97220 HS |
959 | ehca_gen_err("Cannot create SLAB caches"); |
960 | ret = -ENOMEM; | |
961 | goto module_init1; | |
962 | } | |
963 | ||
2b94397a HNN |
964 | ret = ibmebus_register_driver(&ehca_driver); |
965 | if (ret) { | |
fab97220 HS |
966 | ehca_gen_err("Cannot register eHCA device driver"); |
967 | ret = -EINVAL; | |
968 | goto module_init2; | |
969 | } | |
970 | ||
fab97220 HS |
971 | if (ehca_poll_all_eqs != 1) { |
972 | ehca_gen_err("WARNING!!!"); | |
973 | ehca_gen_err("It is possible to lose interrupts."); | |
974 | } else { | |
975 | init_timer(&poll_eqs_timer); | |
976 | poll_eqs_timer.function = ehca_poll_eqs; | |
977 | poll_eqs_timer.expires = jiffies + HZ; | |
978 | add_timer(&poll_eqs_timer); | |
979 | } | |
980 | ||
981 | return 0; | |
982 | ||
983 | module_init2: | |
984 | ehca_destroy_slab_caches(); | |
985 | ||
986 | module_init1: | |
987 | ehca_destroy_comp_pool(); | |
988 | return ret; | |
989 | }; | |
990 | ||
991 | void __exit ehca_module_exit(void) | |
992 | { | |
993 | if (ehca_poll_all_eqs == 1) | |
994 | del_timer_sync(&poll_eqs_timer); | |
995 | ||
fab97220 HS |
996 | ibmebus_unregister_driver(&ehca_driver); |
997 | ||
998 | ehca_destroy_slab_caches(); | |
999 | ||
1000 | ehca_destroy_comp_pool(); | |
1001 | ||
1002 | idr_destroy(&ehca_cq_idr); | |
1003 | idr_destroy(&ehca_qp_idr); | |
1004 | }; | |
1005 | ||
1006 | module_init(ehca_module_init); | |
1007 | module_exit(ehca_module_exit); |