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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 | |
263c24a2 SR |
47 | #include <linux/notifier.h> |
48 | #include <linux/memory.h> | |
fab97220 HS |
49 | #include "ehca_classes.h" |
50 | #include "ehca_iverbs.h" | |
51 | #include "ehca_mrmw.h" | |
52 | #include "ehca_tools.h" | |
53 | #include "hcp_if.h" | |
54 | ||
14fb05b3 | 55 | #define HCAD_VERSION "0026" |
39089e77 | 56 | |
fab97220 HS |
57 | MODULE_LICENSE("Dual BSD/GPL"); |
58 | MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>"); | |
59 | MODULE_DESCRIPTION("IBM eServer HCA InfiniBand Device Driver"); | |
39089e77 | 60 | MODULE_VERSION(HCAD_VERSION); |
fab97220 | 61 | |
e8e91f6b RD |
62 | static int ehca_open_aqp1 = 0; |
63 | static int ehca_hw_level = 0; | |
64 | static int ehca_poll_all_eqs = 1; | |
e8e91f6b | 65 | |
fab97220 | 66 | int ehca_debug_level = 0; |
fab97220 HS |
67 | int ehca_nr_ports = 2; |
68 | int ehca_use_hp_mr = 0; | |
69 | int ehca_port_act_time = 30; | |
fab97220 | 70 | int ehca_static_rate = -1; |
4e430dcb | 71 | int ehca_scaling_code = 0; |
4faf7757 | 72 | int ehca_lock_hcalls = -1; |
d227fa72 SR |
73 | int ehca_max_cq = -1; |
74 | int ehca_max_qp = -1; | |
fab97220 | 75 | |
0455e36d JF |
76 | module_param_named(open_aqp1, ehca_open_aqp1, bool, S_IRUGO); |
77 | module_param_named(debug_level, ehca_debug_level, int, S_IRUGO); | |
78 | module_param_named(hw_level, ehca_hw_level, int, S_IRUGO); | |
79 | module_param_named(nr_ports, ehca_nr_ports, int, S_IRUGO); | |
80 | module_param_named(use_hp_mr, ehca_use_hp_mr, bool, S_IRUGO); | |
81 | module_param_named(port_act_time, ehca_port_act_time, int, S_IRUGO); | |
82 | module_param_named(poll_all_eqs, ehca_poll_all_eqs, bool, S_IRUGO); | |
83 | module_param_named(static_rate, ehca_static_rate, int, S_IRUGO); | |
84 | module_param_named(scaling_code, ehca_scaling_code, bool, S_IRUGO); | |
4faf7757 | 85 | module_param_named(lock_hcalls, ehca_lock_hcalls, bool, S_IRUGO); |
d227fa72 SR |
86 | module_param_named(number_of_cqs, ehca_max_cq, int, S_IRUGO); |
87 | module_param_named(number_of_qps, ehca_max_qp, int, S_IRUGO); | |
fab97220 HS |
88 | |
89 | MODULE_PARM_DESC(open_aqp1, | |
0455e36d | 90 | "Open AQP1 on startup (default: no)"); |
fab97220 | 91 | MODULE_PARM_DESC(debug_level, |
4da27d6d JF |
92 | "Amount of debug output (0: none (default), 1: traces, " |
93 | "2: some dumps, 3: lots)"); | |
fab97220 | 94 | MODULE_PARM_DESC(hw_level, |
0455e36d JF |
95 | "Hardware level (0: autosensing (default), " |
96 | "0x10..0x14: eHCA, 0x20..0x23: eHCA2)"); | |
fab97220 | 97 | MODULE_PARM_DESC(nr_ports, |
bbdd267e HNN |
98 | "number of connected ports (-1: autodetect, 1: port one only, " |
99 | "2: two ports (default)"); | |
fab97220 | 100 | MODULE_PARM_DESC(use_hp_mr, |
0455e36d | 101 | "Use high performance MRs (default: no)"); |
fab97220 | 102 | MODULE_PARM_DESC(port_act_time, |
0455e36d | 103 | "Time to wait for port activation (default: 30 sec)"); |
fab97220 | 104 | MODULE_PARM_DESC(poll_all_eqs, |
0455e36d | 105 | "Poll all event queues periodically (default: yes)"); |
fab97220 | 106 | MODULE_PARM_DESC(static_rate, |
0455e36d | 107 | "Set permanent static rate (default: no static rate)"); |
4fd30060 | 108 | MODULE_PARM_DESC(scaling_code, |
0455e36d | 109 | "Enable scaling code (default: no)"); |
4faf7757 | 110 | MODULE_PARM_DESC(lock_hcalls, |
0455e36d | 111 | "Serialize all hCalls made by the driver " |
4faf7757 | 112 | "(default: autodetect)"); |
d227fa72 SR |
113 | MODULE_PARM_DESC(number_of_cqs, |
114 | "Max number of CQs which can be allocated " | |
115 | "(default: autodetect)"); | |
116 | MODULE_PARM_DESC(number_of_qps, | |
117 | "Max number of QPs which can be allocated " | |
118 | "(default: autodetect)"); | |
fab97220 | 119 | |
26ed687f JF |
120 | DEFINE_RWLOCK(ehca_qp_idr_lock); |
121 | DEFINE_RWLOCK(ehca_cq_idr_lock); | |
fab97220 HS |
122 | DEFINE_IDR(ehca_qp_idr); |
123 | DEFINE_IDR(ehca_cq_idr); | |
124 | ||
9844b71b JF |
125 | static LIST_HEAD(shca_list); /* list of all registered ehcas */ |
126 | static DEFINE_SPINLOCK(shca_list_lock); | |
fab97220 HS |
127 | |
128 | static struct timer_list poll_eqs_timer; | |
129 | ||
7e28db5d | 130 | #ifdef CONFIG_PPC_64K_PAGES |
2b94397a | 131 | static struct kmem_cache *ctblk_cache; |
7e28db5d | 132 | |
f2d91361 | 133 | void *ehca_alloc_fw_ctrlblock(gfp_t flags) |
7e28db5d | 134 | { |
f2d91361 | 135 | void *ret = kmem_cache_zalloc(ctblk_cache, flags); |
7e28db5d HNN |
136 | if (!ret) |
137 | ehca_gen_err("Out of memory for ctblk"); | |
138 | return ret; | |
139 | } | |
140 | ||
141 | void ehca_free_fw_ctrlblock(void *ptr) | |
142 | { | |
143 | if (ptr) | |
144 | kmem_cache_free(ctblk_cache, ptr); | |
145 | ||
146 | } | |
147 | #endif | |
148 | ||
51d2bfbd HNN |
149 | int ehca2ib_return_code(u64 ehca_rc) |
150 | { | |
151 | switch (ehca_rc) { | |
152 | case H_SUCCESS: | |
153 | return 0; | |
154 | case H_RESOURCE: /* Resource in use */ | |
155 | case H_BUSY: | |
156 | return -EBUSY; | |
157 | case H_NOT_ENOUGH_RESOURCES: /* insufficient resources */ | |
158 | case H_CONSTRAINED: /* resource constraint */ | |
159 | case H_NO_MEM: | |
160 | return -ENOMEM; | |
161 | default: | |
162 | return -EINVAL; | |
163 | } | |
164 | } | |
165 | ||
fab97220 HS |
166 | static int ehca_create_slab_caches(void) |
167 | { | |
168 | int ret; | |
169 | ||
170 | ret = ehca_init_pd_cache(); | |
171 | if (ret) { | |
172 | ehca_gen_err("Cannot create PD SLAB cache."); | |
173 | return ret; | |
174 | } | |
175 | ||
176 | ret = ehca_init_cq_cache(); | |
177 | if (ret) { | |
178 | ehca_gen_err("Cannot create CQ SLAB cache."); | |
179 | goto create_slab_caches2; | |
180 | } | |
181 | ||
182 | ret = ehca_init_qp_cache(); | |
183 | if (ret) { | |
184 | ehca_gen_err("Cannot create QP SLAB cache."); | |
185 | goto create_slab_caches3; | |
186 | } | |
187 | ||
188 | ret = ehca_init_av_cache(); | |
189 | if (ret) { | |
190 | ehca_gen_err("Cannot create AV SLAB cache."); | |
191 | goto create_slab_caches4; | |
192 | } | |
193 | ||
194 | ret = ehca_init_mrmw_cache(); | |
195 | if (ret) { | |
196 | ehca_gen_err("Cannot create MR&MW SLAB cache."); | |
197 | goto create_slab_caches5; | |
198 | } | |
199 | ||
e2f81daf SR |
200 | ret = ehca_init_small_qp_cache(); |
201 | if (ret) { | |
202 | ehca_gen_err("Cannot create small queue SLAB cache."); | |
203 | goto create_slab_caches6; | |
204 | } | |
205 | ||
7e28db5d HNN |
206 | #ifdef CONFIG_PPC_64K_PAGES |
207 | ctblk_cache = kmem_cache_create("ehca_cache_ctblk", | |
208 | EHCA_PAGESIZE, H_CB_ALIGNMENT, | |
209 | SLAB_HWCACHE_ALIGN, | |
20c2df83 | 210 | NULL); |
7e28db5d HNN |
211 | if (!ctblk_cache) { |
212 | ehca_gen_err("Cannot create ctblk SLAB cache."); | |
e2f81daf SR |
213 | ehca_cleanup_small_qp_cache(); |
214 | goto create_slab_caches6; | |
7e28db5d HNN |
215 | } |
216 | #endif | |
fab97220 HS |
217 | return 0; |
218 | ||
e2f81daf SR |
219 | create_slab_caches6: |
220 | ehca_cleanup_mrmw_cache(); | |
221 | ||
fab97220 HS |
222 | create_slab_caches5: |
223 | ehca_cleanup_av_cache(); | |
224 | ||
225 | create_slab_caches4: | |
226 | ehca_cleanup_qp_cache(); | |
227 | ||
228 | create_slab_caches3: | |
229 | ehca_cleanup_cq_cache(); | |
230 | ||
231 | create_slab_caches2: | |
232 | ehca_cleanup_pd_cache(); | |
233 | ||
234 | return ret; | |
235 | } | |
236 | ||
237 | static void ehca_destroy_slab_caches(void) | |
238 | { | |
e2f81daf | 239 | ehca_cleanup_small_qp_cache(); |
fab97220 HS |
240 | ehca_cleanup_mrmw_cache(); |
241 | ehca_cleanup_av_cache(); | |
242 | ehca_cleanup_qp_cache(); | |
243 | ehca_cleanup_cq_cache(); | |
244 | ehca_cleanup_pd_cache(); | |
7e28db5d HNN |
245 | #ifdef CONFIG_PPC_64K_PAGES |
246 | if (ctblk_cache) | |
247 | kmem_cache_destroy(ctblk_cache); | |
248 | #endif | |
fab97220 HS |
249 | } |
250 | ||
2b94397a HNN |
251 | #define EHCA_HCAAVER EHCA_BMASK_IBM(32, 39) |
252 | #define EHCA_REVID EHCA_BMASK_IBM(40, 63) | |
fab97220 | 253 | |
91f13aa3 JF |
254 | static struct cap_descr { |
255 | u64 mask; | |
256 | char *descr; | |
257 | } hca_cap_descr[] = { | |
258 | { HCA_CAP_AH_PORT_NR_CHECK, "HCA_CAP_AH_PORT_NR_CHECK" }, | |
259 | { HCA_CAP_ATOMIC, "HCA_CAP_ATOMIC" }, | |
260 | { HCA_CAP_AUTO_PATH_MIG, "HCA_CAP_AUTO_PATH_MIG" }, | |
261 | { HCA_CAP_BAD_P_KEY_CTR, "HCA_CAP_BAD_P_KEY_CTR" }, | |
262 | { HCA_CAP_SQD_RTS_PORT_CHANGE, "HCA_CAP_SQD_RTS_PORT_CHANGE" }, | |
263 | { HCA_CAP_CUR_QP_STATE_MOD, "HCA_CAP_CUR_QP_STATE_MOD" }, | |
264 | { HCA_CAP_INIT_TYPE, "HCA_CAP_INIT_TYPE" }, | |
265 | { HCA_CAP_PORT_ACTIVE_EVENT, "HCA_CAP_PORT_ACTIVE_EVENT" }, | |
266 | { HCA_CAP_Q_KEY_VIOL_CTR, "HCA_CAP_Q_KEY_VIOL_CTR" }, | |
267 | { HCA_CAP_WQE_RESIZE, "HCA_CAP_WQE_RESIZE" }, | |
268 | { HCA_CAP_RAW_PACKET_MCAST, "HCA_CAP_RAW_PACKET_MCAST" }, | |
269 | { HCA_CAP_SHUTDOWN_PORT, "HCA_CAP_SHUTDOWN_PORT" }, | |
270 | { HCA_CAP_RC_LL_QP, "HCA_CAP_RC_LL_QP" }, | |
271 | { HCA_CAP_SRQ, "HCA_CAP_SRQ" }, | |
272 | { HCA_CAP_UD_LL_QP, "HCA_CAP_UD_LL_QP" }, | |
273 | { HCA_CAP_RESIZE_MR, "HCA_CAP_RESIZE_MR" }, | |
274 | { HCA_CAP_MINI_QP, "HCA_CAP_MINI_QP" }, | |
4faf7757 | 275 | { HCA_CAP_H_ALLOC_RES_SYNC, "HCA_CAP_H_ALLOC_RES_SYNC" }, |
91f13aa3 JF |
276 | }; |
277 | ||
abc39d36 | 278 | static int ehca_sense_attributes(struct ehca_shca *shca) |
fab97220 | 279 | { |
91f13aa3 | 280 | int i, ret = 0; |
fab97220 HS |
281 | u64 h_ret; |
282 | struct hipz_query_hca *rblock; | |
91f13aa3 | 283 | struct hipz_query_port *port; |
4da27d6d | 284 | const char *loc_code; |
fab97220 | 285 | |
abc39d36 JF |
286 | static const u32 pgsize_map[] = { |
287 | HCA_CAP_MR_PGSIZE_4K, 0x1000, | |
288 | HCA_CAP_MR_PGSIZE_64K, 0x10000, | |
289 | HCA_CAP_MR_PGSIZE_1M, 0x100000, | |
290 | HCA_CAP_MR_PGSIZE_16M, 0x1000000, | |
291 | }; | |
292 | ||
4da27d6d JF |
293 | ehca_gen_dbg("Probing adapter %s...", |
294 | shca->ofdev->node->full_name); | |
295 | loc_code = of_get_property(shca->ofdev->node, "ibm,loc-code", NULL); | |
296 | if (loc_code) | |
297 | ehca_gen_dbg(" ... location lode=%s", loc_code); | |
298 | ||
f2d91361 | 299 | rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); |
fab97220 HS |
300 | if (!rblock) { |
301 | ehca_gen_err("Cannot allocate rblock memory."); | |
302 | return -ENOMEM; | |
303 | } | |
304 | ||
305 | h_ret = hipz_h_query_hca(shca->ipz_hca_handle, rblock); | |
306 | if (h_ret != H_SUCCESS) { | |
e3722192 | 307 | ehca_gen_err("Cannot query device properties. h_ret=%li", |
fab97220 HS |
308 | h_ret); |
309 | ret = -EPERM; | |
91f13aa3 | 310 | goto sense_attributes1; |
fab97220 HS |
311 | } |
312 | ||
313 | if (ehca_nr_ports == 1) | |
314 | shca->num_ports = 1; | |
315 | else | |
316 | shca->num_ports = (u8)rblock->num_ports; | |
317 | ||
318 | ehca_gen_dbg(" ... found %x ports", rblock->num_ports); | |
319 | ||
320 | if (ehca_hw_level == 0) { | |
321 | u32 hcaaver; | |
322 | u32 revid; | |
323 | ||
324 | hcaaver = EHCA_BMASK_GET(EHCA_HCAAVER, rblock->hw_ver); | |
325 | revid = EHCA_BMASK_GET(EHCA_REVID, rblock->hw_ver); | |
326 | ||
327 | ehca_gen_dbg(" ... hardware version=%x:%x", hcaaver, revid); | |
328 | ||
fbb9318b JF |
329 | if (hcaaver == 1) { |
330 | if (revid <= 3) | |
331 | shca->hw_level = 0x10 | (revid + 1); | |
332 | else | |
333 | shca->hw_level = 0x14; | |
334 | } else if (hcaaver == 2) { | |
335 | if (revid == 0) | |
336 | shca->hw_level = 0x21; | |
337 | else if (revid == 0x10) | |
338 | shca->hw_level = 0x22; | |
339 | else if (revid == 0x20 || revid == 0x21) | |
340 | shca->hw_level = 0x23; | |
341 | } | |
342 | ||
343 | if (!shca->hw_level) { | |
91f13aa3 JF |
344 | ehca_gen_warn("unknown hardware version" |
345 | " - assuming default level"); | |
346 | shca->hw_level = 0x22; | |
347 | } | |
fbb9318b JF |
348 | } else |
349 | shca->hw_level = ehca_hw_level; | |
fab97220 HS |
350 | ehca_gen_dbg(" ... hardware level=%x", shca->hw_level); |
351 | ||
91f13aa3 JF |
352 | shca->hca_cap = rblock->hca_cap_indicators; |
353 | ehca_gen_dbg(" ... HCA capabilities:"); | |
354 | for (i = 0; i < ARRAY_SIZE(hca_cap_descr); i++) | |
355 | if (EHCA_BMASK_GET(hca_cap_descr[i].mask, shca->hca_cap)) | |
356 | ehca_gen_dbg(" %s", hca_cap_descr[i].descr); | |
357 | ||
4faf7757 JF |
358 | /* Autodetect hCall locking -- the "H_ALLOC_RESOURCE synced" flag is |
359 | * a firmware property, so it's valid across all adapters | |
360 | */ | |
361 | if (ehca_lock_hcalls == -1) | |
362 | ehca_lock_hcalls = !(shca->hca_cap & HCA_CAP_H_ALLOC_RES_SYNC); | |
363 | ||
abc39d36 JF |
364 | /* translate supported MR page sizes; always support 4K */ |
365 | shca->hca_cap_mr_pgsize = EHCA_PAGESIZE; | |
a7607c9b JF |
366 | for (i = 0; i < ARRAY_SIZE(pgsize_map); i += 2) |
367 | if (rblock->memory_page_size_supported & pgsize_map[i]) | |
368 | shca->hca_cap_mr_pgsize |= pgsize_map[i + 1]; | |
5bb7d929 | 369 | |
d227fa72 | 370 | /* Set maximum number of CQs and QPs to calculate EQ size */ |
19f42821 SR |
371 | if (shca->max_num_qps == -1) |
372 | shca->max_num_qps = min_t(int, rblock->max_qp, | |
373 | EHCA_MAX_NUM_QUEUES); | |
374 | else if (shca->max_num_qps < 1 || shca->max_num_qps > rblock->max_qp) { | |
375 | ehca_gen_warn("The requested number of QPs is out of range " | |
376 | "(1 - %i) specified by HW. Value is set to %i", | |
377 | rblock->max_qp, rblock->max_qp); | |
378 | shca->max_num_qps = rblock->max_qp; | |
d227fa72 SR |
379 | } |
380 | ||
19f42821 SR |
381 | if (shca->max_num_cqs == -1) |
382 | shca->max_num_cqs = min_t(int, rblock->max_cq, | |
383 | EHCA_MAX_NUM_QUEUES); | |
384 | else if (shca->max_num_cqs < 1 || shca->max_num_cqs > rblock->max_cq) { | |
385 | ehca_gen_warn("The requested number of CQs is out of range " | |
386 | "(1 - %i) specified by HW. Value is set to %i", | |
387 | rblock->max_cq, rblock->max_cq); | |
d227fa72 SR |
388 | } |
389 | ||
abc39d36 | 390 | /* query max MTU from first port -- it's the same for all ports */ |
2b94397a | 391 | port = (struct hipz_query_port *)rblock; |
91f13aa3 JF |
392 | h_ret = hipz_h_query_port(shca->ipz_hca_handle, 1, port); |
393 | if (h_ret != H_SUCCESS) { | |
e3722192 | 394 | ehca_gen_err("Cannot query port properties. h_ret=%li", |
91f13aa3 JF |
395 | h_ret); |
396 | ret = -EPERM; | |
397 | goto sense_attributes1; | |
398 | } | |
399 | ||
400 | shca->max_mtu = port->max_mtu; | |
401 | ||
402 | sense_attributes1: | |
7e28db5d | 403 | ehca_free_fw_ctrlblock(rblock); |
fab97220 HS |
404 | return ret; |
405 | } | |
406 | ||
407 | static int init_node_guid(struct ehca_shca *shca) | |
408 | { | |
409 | int ret = 0; | |
410 | struct hipz_query_hca *rblock; | |
411 | ||
f2d91361 | 412 | rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); |
fab97220 HS |
413 | if (!rblock) { |
414 | ehca_err(&shca->ib_device, "Can't allocate rblock memory."); | |
415 | return -ENOMEM; | |
416 | } | |
417 | ||
418 | if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) { | |
419 | ehca_err(&shca->ib_device, "Can't query device properties"); | |
420 | ret = -EINVAL; | |
421 | goto init_node_guid1; | |
422 | } | |
423 | ||
424 | memcpy(&shca->ib_device.node_guid, &rblock->node_guid, sizeof(u64)); | |
425 | ||
426 | init_node_guid1: | |
7e28db5d | 427 | ehca_free_fw_ctrlblock(rblock); |
fab97220 HS |
428 | return ret; |
429 | } | |
430 | ||
e8e91f6b | 431 | static int ehca_init_device(struct ehca_shca *shca) |
fab97220 HS |
432 | { |
433 | int ret; | |
434 | ||
435 | ret = init_node_guid(shca); | |
436 | if (ret) | |
437 | return ret; | |
438 | ||
439 | strlcpy(shca->ib_device.name, "ehca%d", IB_DEVICE_NAME_MAX); | |
440 | shca->ib_device.owner = THIS_MODULE; | |
441 | ||
5281a4b8 | 442 | shca->ib_device.uverbs_abi_ver = 8; |
fab97220 HS |
443 | shca->ib_device.uverbs_cmd_mask = |
444 | (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | | |
445 | (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | | |
446 | (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | | |
447 | (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | | |
448 | (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | | |
449 | (1ull << IB_USER_VERBS_CMD_REG_MR) | | |
450 | (1ull << IB_USER_VERBS_CMD_DEREG_MR) | | |
451 | (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | | |
452 | (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | | |
453 | (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | | |
454 | (1ull << IB_USER_VERBS_CMD_CREATE_QP) | | |
455 | (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | | |
456 | (1ull << IB_USER_VERBS_CMD_QUERY_QP) | | |
457 | (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | | |
458 | (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | | |
459 | (1ull << IB_USER_VERBS_CMD_DETACH_MCAST); | |
460 | ||
07ebafba | 461 | shca->ib_device.node_type = RDMA_NODE_IB_CA; |
fab97220 | 462 | shca->ib_device.phys_port_cnt = shca->num_ports; |
f4fd0b22 | 463 | shca->ib_device.num_comp_vectors = 1; |
6b08f3ae | 464 | shca->ib_device.dma_device = &shca->ofdev->dev; |
fab97220 HS |
465 | shca->ib_device.query_device = ehca_query_device; |
466 | shca->ib_device.query_port = ehca_query_port; | |
467 | shca->ib_device.query_gid = ehca_query_gid; | |
468 | shca->ib_device.query_pkey = ehca_query_pkey; | |
469 | /* shca->in_device.modify_device = ehca_modify_device */ | |
470 | shca->ib_device.modify_port = ehca_modify_port; | |
471 | shca->ib_device.alloc_ucontext = ehca_alloc_ucontext; | |
472 | shca->ib_device.dealloc_ucontext = ehca_dealloc_ucontext; | |
473 | shca->ib_device.alloc_pd = ehca_alloc_pd; | |
474 | shca->ib_device.dealloc_pd = ehca_dealloc_pd; | |
475 | shca->ib_device.create_ah = ehca_create_ah; | |
476 | /* shca->ib_device.modify_ah = ehca_modify_ah; */ | |
477 | shca->ib_device.query_ah = ehca_query_ah; | |
478 | shca->ib_device.destroy_ah = ehca_destroy_ah; | |
479 | shca->ib_device.create_qp = ehca_create_qp; | |
480 | shca->ib_device.modify_qp = ehca_modify_qp; | |
481 | shca->ib_device.query_qp = ehca_query_qp; | |
482 | shca->ib_device.destroy_qp = ehca_destroy_qp; | |
483 | shca->ib_device.post_send = ehca_post_send; | |
484 | shca->ib_device.post_recv = ehca_post_recv; | |
485 | shca->ib_device.create_cq = ehca_create_cq; | |
486 | shca->ib_device.destroy_cq = ehca_destroy_cq; | |
487 | shca->ib_device.resize_cq = ehca_resize_cq; | |
488 | shca->ib_device.poll_cq = ehca_poll_cq; | |
489 | /* shca->ib_device.peek_cq = ehca_peek_cq; */ | |
490 | shca->ib_device.req_notify_cq = ehca_req_notify_cq; | |
491 | /* shca->ib_device.req_ncomp_notif = ehca_req_ncomp_notif; */ | |
492 | shca->ib_device.get_dma_mr = ehca_get_dma_mr; | |
493 | shca->ib_device.reg_phys_mr = ehca_reg_phys_mr; | |
494 | shca->ib_device.reg_user_mr = ehca_reg_user_mr; | |
495 | shca->ib_device.query_mr = ehca_query_mr; | |
496 | shca->ib_device.dereg_mr = ehca_dereg_mr; | |
497 | shca->ib_device.rereg_phys_mr = ehca_rereg_phys_mr; | |
498 | shca->ib_device.alloc_mw = ehca_alloc_mw; | |
499 | shca->ib_device.bind_mw = ehca_bind_mw; | |
500 | shca->ib_device.dealloc_mw = ehca_dealloc_mw; | |
501 | shca->ib_device.alloc_fmr = ehca_alloc_fmr; | |
502 | shca->ib_device.map_phys_fmr = ehca_map_phys_fmr; | |
503 | shca->ib_device.unmap_fmr = ehca_unmap_fmr; | |
504 | shca->ib_device.dealloc_fmr = ehca_dealloc_fmr; | |
505 | shca->ib_device.attach_mcast = ehca_attach_mcast; | |
506 | shca->ib_device.detach_mcast = ehca_detach_mcast; | |
2b5e6b12 | 507 | shca->ib_device.process_mad = ehca_process_mad; |
fab97220 HS |
508 | shca->ib_device.mmap = ehca_mmap; |
509 | ||
a6a12947 JF |
510 | if (EHCA_BMASK_GET(HCA_CAP_SRQ, shca->hca_cap)) { |
511 | shca->ib_device.uverbs_cmd_mask |= | |
512 | (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | | |
513 | (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | | |
514 | (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | | |
515 | (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ); | |
516 | ||
517 | shca->ib_device.create_srq = ehca_create_srq; | |
518 | shca->ib_device.modify_srq = ehca_modify_srq; | |
519 | shca->ib_device.query_srq = ehca_query_srq; | |
520 | shca->ib_device.destroy_srq = ehca_destroy_srq; | |
521 | shca->ib_device.post_srq_recv = ehca_post_srq_recv; | |
522 | } | |
523 | ||
fab97220 HS |
524 | return ret; |
525 | } | |
526 | ||
527 | static int ehca_create_aqp1(struct ehca_shca *shca, u32 port) | |
528 | { | |
529 | struct ehca_sport *sport = &shca->sport[port - 1]; | |
530 | struct ib_cq *ibcq; | |
531 | struct ib_qp *ibqp; | |
532 | struct ib_qp_init_attr qp_init_attr; | |
533 | int ret; | |
534 | ||
535 | if (sport->ibcq_aqp1) { | |
536 | ehca_err(&shca->ib_device, "AQP1 CQ is already created."); | |
537 | return -EPERM; | |
538 | } | |
539 | ||
2b94397a | 540 | ibcq = ib_create_cq(&shca->ib_device, NULL, NULL, (void *)(-1), 10, 0); |
fab97220 HS |
541 | if (IS_ERR(ibcq)) { |
542 | ehca_err(&shca->ib_device, "Cannot create AQP1 CQ."); | |
543 | return PTR_ERR(ibcq); | |
544 | } | |
545 | sport->ibcq_aqp1 = ibcq; | |
546 | ||
b8b50e35 | 547 | if (sport->ibqp_sqp[IB_QPT_GSI]) { |
fab97220 HS |
548 | ehca_err(&shca->ib_device, "AQP1 QP is already created."); |
549 | ret = -EPERM; | |
550 | goto create_aqp1; | |
551 | } | |
552 | ||
553 | memset(&qp_init_attr, 0, sizeof(struct ib_qp_init_attr)); | |
554 | qp_init_attr.send_cq = ibcq; | |
555 | qp_init_attr.recv_cq = ibcq; | |
556 | qp_init_attr.sq_sig_type = IB_SIGNAL_ALL_WR; | |
557 | qp_init_attr.cap.max_send_wr = 100; | |
558 | qp_init_attr.cap.max_recv_wr = 100; | |
559 | qp_init_attr.cap.max_send_sge = 2; | |
560 | qp_init_attr.cap.max_recv_sge = 1; | |
561 | qp_init_attr.qp_type = IB_QPT_GSI; | |
562 | qp_init_attr.port_num = port; | |
563 | qp_init_attr.qp_context = NULL; | |
564 | qp_init_attr.event_handler = NULL; | |
565 | qp_init_attr.srq = NULL; | |
566 | ||
567 | ibqp = ib_create_qp(&shca->pd->ib_pd, &qp_init_attr); | |
568 | if (IS_ERR(ibqp)) { | |
569 | ehca_err(&shca->ib_device, "Cannot create AQP1 QP."); | |
570 | ret = PTR_ERR(ibqp); | |
571 | goto create_aqp1; | |
572 | } | |
b8b50e35 | 573 | sport->ibqp_sqp[IB_QPT_GSI] = ibqp; |
fab97220 HS |
574 | |
575 | return 0; | |
576 | ||
577 | create_aqp1: | |
578 | ib_destroy_cq(sport->ibcq_aqp1); | |
579 | return ret; | |
580 | } | |
581 | ||
582 | static int ehca_destroy_aqp1(struct ehca_sport *sport) | |
583 | { | |
584 | int ret; | |
585 | ||
b8b50e35 | 586 | ret = ib_destroy_qp(sport->ibqp_sqp[IB_QPT_GSI]); |
fab97220 | 587 | if (ret) { |
e3722192 | 588 | ehca_gen_err("Cannot destroy AQP1 QP. ret=%i", ret); |
fab97220 HS |
589 | return ret; |
590 | } | |
591 | ||
592 | ret = ib_destroy_cq(sport->ibcq_aqp1); | |
593 | if (ret) | |
e3722192 | 594 | ehca_gen_err("Cannot destroy AQP1 CQ. ret=%i", ret); |
fab97220 HS |
595 | |
596 | return ret; | |
597 | } | |
598 | ||
599 | static ssize_t ehca_show_debug_level(struct device_driver *ddp, char *buf) | |
600 | { | |
4da27d6d | 601 | return snprintf(buf, PAGE_SIZE, "%d\n", ehca_debug_level); |
fab97220 HS |
602 | } |
603 | ||
604 | static ssize_t ehca_store_debug_level(struct device_driver *ddp, | |
605 | const char *buf, size_t count) | |
606 | { | |
607 | int value = (*buf) - '0'; | |
608 | if (value >= 0 && value <= 9) | |
609 | ehca_debug_level = value; | |
610 | return 1; | |
611 | } | |
612 | ||
e8e91f6b RD |
613 | static DRIVER_ATTR(debug_level, S_IRUSR | S_IWUSR, |
614 | ehca_show_debug_level, ehca_store_debug_level); | |
fab97220 | 615 | |
bba9b601 JF |
616 | static struct attribute *ehca_drv_attrs[] = { |
617 | &driver_attr_debug_level.attr, | |
618 | NULL | |
619 | }; | |
fab97220 | 620 | |
bba9b601 JF |
621 | static struct attribute_group ehca_drv_attr_grp = { |
622 | .attrs = ehca_drv_attrs | |
623 | }; | |
fab97220 | 624 | |
23b9c1ab GKH |
625 | static struct attribute_group *ehca_drv_attr_groups[] = { |
626 | &ehca_drv_attr_grp, | |
627 | NULL, | |
628 | }; | |
629 | ||
fab97220 HS |
630 | #define EHCA_RESOURCE_ATTR(name) \ |
631 | static ssize_t ehca_show_##name(struct device *dev, \ | |
632 | struct device_attribute *attr, \ | |
633 | char *buf) \ | |
634 | { \ | |
635 | struct ehca_shca *shca; \ | |
636 | struct hipz_query_hca *rblock; \ | |
637 | int data; \ | |
638 | \ | |
639 | shca = dev->driver_data; \ | |
640 | \ | |
f2d91361 | 641 | rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); \ |
fab97220 | 642 | if (!rblock) { \ |
898eb71c | 643 | dev_err(dev, "Can't allocate rblock memory.\n"); \ |
fab97220 HS |
644 | return 0; \ |
645 | } \ | |
646 | \ | |
647 | if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) { \ | |
898eb71c | 648 | dev_err(dev, "Can't query device properties\n"); \ |
7e28db5d | 649 | ehca_free_fw_ctrlblock(rblock); \ |
fab97220 HS |
650 | return 0; \ |
651 | } \ | |
652 | \ | |
653 | data = rblock->name; \ | |
7e28db5d | 654 | ehca_free_fw_ctrlblock(rblock); \ |
fab97220 HS |
655 | \ |
656 | if ((strcmp(#name, "num_ports") == 0) && (ehca_nr_ports == 1)) \ | |
657 | return snprintf(buf, 256, "1\n"); \ | |
658 | else \ | |
659 | return snprintf(buf, 256, "%d\n", data); \ | |
660 | \ | |
661 | } \ | |
662 | static DEVICE_ATTR(name, S_IRUGO, ehca_show_##name, NULL); | |
663 | ||
664 | EHCA_RESOURCE_ATTR(num_ports); | |
665 | EHCA_RESOURCE_ATTR(hw_ver); | |
666 | EHCA_RESOURCE_ATTR(max_eq); | |
667 | EHCA_RESOURCE_ATTR(cur_eq); | |
668 | EHCA_RESOURCE_ATTR(max_cq); | |
669 | EHCA_RESOURCE_ATTR(cur_cq); | |
670 | EHCA_RESOURCE_ATTR(max_qp); | |
671 | EHCA_RESOURCE_ATTR(cur_qp); | |
672 | EHCA_RESOURCE_ATTR(max_mr); | |
673 | EHCA_RESOURCE_ATTR(cur_mr); | |
674 | EHCA_RESOURCE_ATTR(max_mw); | |
675 | EHCA_RESOURCE_ATTR(cur_mw); | |
676 | EHCA_RESOURCE_ATTR(max_pd); | |
677 | EHCA_RESOURCE_ATTR(max_ah); | |
678 | ||
679 | static ssize_t ehca_show_adapter_handle(struct device *dev, | |
680 | struct device_attribute *attr, | |
681 | char *buf) | |
682 | { | |
683 | struct ehca_shca *shca = dev->driver_data; | |
684 | ||
685 | return sprintf(buf, "%lx\n", shca->ipz_hca_handle.handle); | |
686 | ||
687 | } | |
688 | static DEVICE_ATTR(adapter_handle, S_IRUGO, ehca_show_adapter_handle, NULL); | |
689 | ||
bba9b601 JF |
690 | static struct attribute *ehca_dev_attrs[] = { |
691 | &dev_attr_adapter_handle.attr, | |
692 | &dev_attr_num_ports.attr, | |
693 | &dev_attr_hw_ver.attr, | |
694 | &dev_attr_max_eq.attr, | |
695 | &dev_attr_cur_eq.attr, | |
696 | &dev_attr_max_cq.attr, | |
697 | &dev_attr_cur_cq.attr, | |
698 | &dev_attr_max_qp.attr, | |
699 | &dev_attr_cur_qp.attr, | |
700 | &dev_attr_max_mr.attr, | |
701 | &dev_attr_cur_mr.attr, | |
702 | &dev_attr_max_mw.attr, | |
703 | &dev_attr_cur_mw.attr, | |
704 | &dev_attr_max_pd.attr, | |
705 | &dev_attr_max_ah.attr, | |
706 | NULL | |
707 | }; | |
fab97220 | 708 | |
bba9b601 JF |
709 | static struct attribute_group ehca_dev_attr_grp = { |
710 | .attrs = ehca_dev_attrs | |
711 | }; | |
fab97220 | 712 | |
6b08f3ae | 713 | static int __devinit ehca_probe(struct of_device *dev, |
fab97220 HS |
714 | const struct of_device_id *id) |
715 | { | |
716 | struct ehca_shca *shca; | |
a7edd0e6 | 717 | const u64 *handle; |
fab97220 | 718 | struct ib_pd *ibpd; |
d227fa72 | 719 | int ret, i, eq_size; |
fab97220 | 720 | |
6b08f3ae | 721 | handle = of_get_property(dev->node, "ibm,hca-handle", NULL); |
fab97220 HS |
722 | if (!handle) { |
723 | ehca_gen_err("Cannot get eHCA handle for adapter: %s.", | |
6b08f3ae | 724 | dev->node->full_name); |
fab97220 HS |
725 | return -ENODEV; |
726 | } | |
727 | ||
728 | if (!(*handle)) { | |
729 | ehca_gen_err("Wrong eHCA handle for adapter: %s.", | |
6b08f3ae | 730 | dev->node->full_name); |
fab97220 HS |
731 | return -ENODEV; |
732 | } | |
733 | ||
734 | shca = (struct ehca_shca *)ib_alloc_device(sizeof(*shca)); | |
735 | if (!shca) { | |
736 | ehca_gen_err("Cannot allocate shca memory."); | |
737 | return -ENOMEM; | |
738 | } | |
19f42821 | 739 | |
c4ed790d | 740 | mutex_init(&shca->modify_mutex); |
d227fa72 SR |
741 | atomic_set(&shca->num_cqs, 0); |
742 | atomic_set(&shca->num_qps, 0); | |
19f42821 SR |
743 | shca->max_num_qps = ehca_max_qp; |
744 | shca->max_num_cqs = ehca_max_cq; | |
745 | ||
bbdd267e HNN |
746 | for (i = 0; i < ARRAY_SIZE(shca->sport); i++) |
747 | spin_lock_init(&shca->sport[i].mod_sqp_lock); | |
fab97220 | 748 | |
6b08f3ae | 749 | shca->ofdev = dev; |
fab97220 | 750 | shca->ipz_hca_handle.handle = *handle; |
6b08f3ae | 751 | dev->dev.driver_data = shca; |
fab97220 HS |
752 | |
753 | ret = ehca_sense_attributes(shca); | |
754 | if (ret < 0) { | |
755 | ehca_gen_err("Cannot sense eHCA attributes."); | |
756 | goto probe1; | |
757 | } | |
758 | ||
0f248d9c | 759 | ret = ehca_init_device(shca); |
fab97220 | 760 | if (ret) { |
0f248d9c | 761 | ehca_gen_err("Cannot init ehca device struct"); |
fab97220 HS |
762 | goto probe1; |
763 | } | |
764 | ||
19f42821 | 765 | eq_size = 2 * shca->max_num_cqs + 4 * shca->max_num_qps; |
fab97220 | 766 | /* create event queues */ |
d227fa72 | 767 | ret = ehca_create_eq(shca, &shca->eq, EHCA_EQ, eq_size); |
fab97220 HS |
768 | if (ret) { |
769 | ehca_err(&shca->ib_device, "Cannot create EQ."); | |
0f248d9c | 770 | goto probe1; |
fab97220 HS |
771 | } |
772 | ||
773 | ret = ehca_create_eq(shca, &shca->neq, EHCA_NEQ, 513); | |
774 | if (ret) { | |
775 | ehca_err(&shca->ib_device, "Cannot create NEQ."); | |
776 | goto probe3; | |
777 | } | |
778 | ||
779 | /* create internal protection domain */ | |
2b94397a | 780 | ibpd = ehca_alloc_pd(&shca->ib_device, (void *)(-1), NULL); |
fab97220 HS |
781 | if (IS_ERR(ibpd)) { |
782 | ehca_err(&shca->ib_device, "Cannot create internal PD."); | |
783 | ret = PTR_ERR(ibpd); | |
784 | goto probe4; | |
785 | } | |
786 | ||
787 | shca->pd = container_of(ibpd, struct ehca_pd, ib_pd); | |
788 | shca->pd->ib_pd.device = &shca->ib_device; | |
789 | ||
790 | /* create internal max MR */ | |
791 | ret = ehca_reg_internal_maxmr(shca, shca->pd, &shca->maxmr); | |
792 | ||
793 | if (ret) { | |
e3722192 | 794 | ehca_err(&shca->ib_device, "Cannot create internal MR ret=%i", |
fab97220 HS |
795 | ret); |
796 | goto probe5; | |
797 | } | |
798 | ||
0f248d9c HNN |
799 | ret = ib_register_device(&shca->ib_device); |
800 | if (ret) { | |
801 | ehca_err(&shca->ib_device, | |
e3722192 | 802 | "ib_register_device() failed ret=%i", ret); |
0f248d9c HNN |
803 | goto probe6; |
804 | } | |
805 | ||
fab97220 HS |
806 | /* create AQP1 for port 1 */ |
807 | if (ehca_open_aqp1 == 1) { | |
808 | shca->sport[0].port_state = IB_PORT_DOWN; | |
809 | ret = ehca_create_aqp1(shca, 1); | |
810 | if (ret) { | |
811 | ehca_err(&shca->ib_device, | |
812 | "Cannot create AQP1 for port 1."); | |
0f248d9c | 813 | goto probe7; |
fab97220 HS |
814 | } |
815 | } | |
816 | ||
817 | /* create AQP1 for port 2 */ | |
818 | if ((ehca_open_aqp1 == 1) && (shca->num_ports == 2)) { | |
819 | shca->sport[1].port_state = IB_PORT_DOWN; | |
820 | ret = ehca_create_aqp1(shca, 2); | |
821 | if (ret) { | |
822 | ehca_err(&shca->ib_device, | |
823 | "Cannot create AQP1 for port 2."); | |
0f248d9c | 824 | goto probe8; |
fab97220 HS |
825 | } |
826 | } | |
827 | ||
6b08f3ae | 828 | ret = sysfs_create_group(&dev->dev.kobj, &ehca_dev_attr_grp); |
bba9b601 JF |
829 | if (ret) /* only complain; we can live without attributes */ |
830 | ehca_err(&shca->ib_device, | |
831 | "Cannot create device attributes ret=%d", ret); | |
fab97220 HS |
832 | |
833 | spin_lock(&shca_list_lock); | |
834 | list_add(&shca->shca_list, &shca_list); | |
835 | spin_unlock(&shca_list_lock); | |
836 | ||
837 | return 0; | |
838 | ||
0f248d9c | 839 | probe8: |
fab97220 HS |
840 | ret = ehca_destroy_aqp1(&shca->sport[0]); |
841 | if (ret) | |
842 | ehca_err(&shca->ib_device, | |
e3722192 | 843 | "Cannot destroy AQP1 for port 1. ret=%i", ret); |
fab97220 | 844 | |
0f248d9c HNN |
845 | probe7: |
846 | ib_unregister_device(&shca->ib_device); | |
847 | ||
fab97220 HS |
848 | probe6: |
849 | ret = ehca_dereg_internal_maxmr(shca); | |
850 | if (ret) | |
851 | ehca_err(&shca->ib_device, | |
852 | "Cannot destroy internal MR. ret=%x", ret); | |
853 | ||
854 | probe5: | |
855 | ret = ehca_dealloc_pd(&shca->pd->ib_pd); | |
856 | if (ret) | |
857 | ehca_err(&shca->ib_device, | |
858 | "Cannot destroy internal PD. ret=%x", ret); | |
859 | ||
860 | probe4: | |
861 | ret = ehca_destroy_eq(shca, &shca->neq); | |
862 | if (ret) | |
863 | ehca_err(&shca->ib_device, | |
864 | "Cannot destroy NEQ. ret=%x", ret); | |
865 | ||
866 | probe3: | |
867 | ret = ehca_destroy_eq(shca, &shca->eq); | |
868 | if (ret) | |
869 | ehca_err(&shca->ib_device, | |
870 | "Cannot destroy EQ. ret=%x", ret); | |
871 | ||
fab97220 HS |
872 | probe1: |
873 | ib_dealloc_device(&shca->ib_device); | |
874 | ||
875 | return -EINVAL; | |
876 | } | |
877 | ||
6b08f3ae | 878 | static int __devexit ehca_remove(struct of_device *dev) |
fab97220 | 879 | { |
6b08f3ae | 880 | struct ehca_shca *shca = dev->dev.driver_data; |
fab97220 HS |
881 | int ret; |
882 | ||
6b08f3ae | 883 | sysfs_remove_group(&dev->dev.kobj, &ehca_dev_attr_grp); |
fab97220 HS |
884 | |
885 | if (ehca_open_aqp1 == 1) { | |
886 | int i; | |
887 | for (i = 0; i < shca->num_ports; i++) { | |
888 | ret = ehca_destroy_aqp1(&shca->sport[i]); | |
889 | if (ret) | |
890 | ehca_err(&shca->ib_device, | |
891 | "Cannot destroy AQP1 for port %x " | |
e3722192 | 892 | "ret=%i", ret, i); |
fab97220 HS |
893 | } |
894 | } | |
895 | ||
896 | ib_unregister_device(&shca->ib_device); | |
897 | ||
898 | ret = ehca_dereg_internal_maxmr(shca); | |
899 | if (ret) | |
900 | ehca_err(&shca->ib_device, | |
e3722192 | 901 | "Cannot destroy internal MR. ret=%i", ret); |
fab97220 HS |
902 | |
903 | ret = ehca_dealloc_pd(&shca->pd->ib_pd); | |
904 | if (ret) | |
905 | ehca_err(&shca->ib_device, | |
e3722192 | 906 | "Cannot destroy internal PD. ret=%i", ret); |
fab97220 HS |
907 | |
908 | ret = ehca_destroy_eq(shca, &shca->eq); | |
909 | if (ret) | |
e3722192 | 910 | ehca_err(&shca->ib_device, "Cannot destroy EQ. ret=%i", ret); |
fab97220 HS |
911 | |
912 | ret = ehca_destroy_eq(shca, &shca->neq); | |
913 | if (ret) | |
e3722192 | 914 | ehca_err(&shca->ib_device, "Canot destroy NEQ. ret=%i", ret); |
fab97220 HS |
915 | |
916 | ib_dealloc_device(&shca->ib_device); | |
917 | ||
918 | spin_lock(&shca_list_lock); | |
919 | list_del(&shca->shca_list); | |
920 | spin_unlock(&shca_list_lock); | |
921 | ||
922 | return ret; | |
923 | } | |
924 | ||
925 | static struct of_device_id ehca_device_table[] = | |
926 | { | |
927 | { | |
928 | .name = "lhca", | |
929 | .compatible = "IBM,lhca", | |
930 | }, | |
931 | {}, | |
932 | }; | |
038919f2 | 933 | MODULE_DEVICE_TABLE(of, ehca_device_table); |
fab97220 | 934 | |
6b08f3ae JF |
935 | static struct of_platform_driver ehca_driver = { |
936 | .name = "ehca", | |
937 | .match_table = ehca_device_table, | |
938 | .probe = ehca_probe, | |
939 | .remove = ehca_remove, | |
23b9c1ab GKH |
940 | .driver = { |
941 | .groups = ehca_drv_attr_groups, | |
942 | }, | |
fab97220 HS |
943 | }; |
944 | ||
945 | void ehca_poll_eqs(unsigned long data) | |
946 | { | |
947 | struct ehca_shca *shca; | |
948 | ||
949 | spin_lock(&shca_list_lock); | |
950 | list_for_each_entry(shca, &shca_list, shca_list) { | |
78d8d5f9 HNN |
951 | if (shca->eq.is_initialized) { |
952 | /* call deadman proc only if eq ptr does not change */ | |
953 | struct ehca_eq *eq = &shca->eq; | |
954 | int max = 3; | |
955 | volatile u64 q_ofs, q_ofs2; | |
956 | u64 flags; | |
957 | spin_lock_irqsave(&eq->spinlock, flags); | |
958 | q_ofs = eq->ipz_queue.current_q_offset; | |
959 | spin_unlock_irqrestore(&eq->spinlock, flags); | |
960 | do { | |
961 | spin_lock_irqsave(&eq->spinlock, flags); | |
962 | q_ofs2 = eq->ipz_queue.current_q_offset; | |
963 | spin_unlock_irqrestore(&eq->spinlock, flags); | |
964 | max--; | |
965 | } while (q_ofs == q_ofs2 && max > 0); | |
966 | if (q_ofs == q_ofs2) | |
967 | ehca_process_eq(shca, 0); | |
968 | } | |
fab97220 | 969 | } |
1a7d2dce | 970 | mod_timer(&poll_eqs_timer, round_jiffies(jiffies + HZ)); |
fab97220 HS |
971 | spin_unlock(&shca_list_lock); |
972 | } | |
973 | ||
263c24a2 SR |
974 | static int ehca_mem_notifier(struct notifier_block *nb, |
975 | unsigned long action, void *data) | |
976 | { | |
977 | static unsigned long ehca_dmem_warn_time; | |
978 | ||
979 | switch (action) { | |
980 | case MEM_CANCEL_OFFLINE: | |
981 | case MEM_CANCEL_ONLINE: | |
982 | case MEM_ONLINE: | |
983 | case MEM_OFFLINE: | |
984 | return NOTIFY_OK; | |
985 | case MEM_GOING_ONLINE: | |
986 | case MEM_GOING_OFFLINE: | |
987 | /* only ok if no hca is attached to the lpar */ | |
988 | spin_lock(&shca_list_lock); | |
989 | if (list_empty(&shca_list)) { | |
990 | spin_unlock(&shca_list_lock); | |
991 | return NOTIFY_OK; | |
992 | } else { | |
993 | spin_unlock(&shca_list_lock); | |
994 | if (printk_timed_ratelimit(&ehca_dmem_warn_time, | |
995 | 30 * 1000)) | |
996 | ehca_gen_err("DMEM operations are not allowed" | |
997 | "as long as an ehca adapter is" | |
998 | "attached to the LPAR"); | |
999 | return NOTIFY_BAD; | |
1000 | } | |
1001 | } | |
1002 | return NOTIFY_OK; | |
1003 | } | |
1004 | ||
1005 | static struct notifier_block ehca_mem_nb = { | |
1006 | .notifier_call = ehca_mem_notifier, | |
1007 | }; | |
1008 | ||
e8e91f6b | 1009 | static int __init ehca_module_init(void) |
fab97220 HS |
1010 | { |
1011 | int ret; | |
1012 | ||
1013 | printk(KERN_INFO "eHCA Infiniband Device Driver " | |
39089e77 | 1014 | "(Version " HCAD_VERSION ")\n"); |
fab97220 | 1015 | |
2b94397a HNN |
1016 | ret = ehca_create_comp_pool(); |
1017 | if (ret) { | |
fab97220 HS |
1018 | ehca_gen_err("Cannot create comp pool."); |
1019 | return ret; | |
1020 | } | |
1021 | ||
2b94397a HNN |
1022 | ret = ehca_create_slab_caches(); |
1023 | if (ret) { | |
fab97220 HS |
1024 | ehca_gen_err("Cannot create SLAB caches"); |
1025 | ret = -ENOMEM; | |
1026 | goto module_init1; | |
1027 | } | |
1028 | ||
2b94397a HNN |
1029 | ret = ibmebus_register_driver(&ehca_driver); |
1030 | if (ret) { | |
fab97220 HS |
1031 | ehca_gen_err("Cannot register eHCA device driver"); |
1032 | ret = -EINVAL; | |
1033 | goto module_init2; | |
1034 | } | |
1035 | ||
263c24a2 SR |
1036 | ret = register_memory_notifier(&ehca_mem_nb); |
1037 | if (ret) { | |
1038 | ehca_gen_err("Failed registering memory add/remove notifier"); | |
1039 | goto module_init3; | |
1040 | } | |
1041 | ||
fab97220 HS |
1042 | if (ehca_poll_all_eqs != 1) { |
1043 | ehca_gen_err("WARNING!!!"); | |
1044 | ehca_gen_err("It is possible to lose interrupts."); | |
1045 | } else { | |
1046 | init_timer(&poll_eqs_timer); | |
1047 | poll_eqs_timer.function = ehca_poll_eqs; | |
1048 | poll_eqs_timer.expires = jiffies + HZ; | |
1049 | add_timer(&poll_eqs_timer); | |
1050 | } | |
1051 | ||
1052 | return 0; | |
1053 | ||
263c24a2 SR |
1054 | module_init3: |
1055 | ibmebus_unregister_driver(&ehca_driver); | |
1056 | ||
fab97220 HS |
1057 | module_init2: |
1058 | ehca_destroy_slab_caches(); | |
1059 | ||
1060 | module_init1: | |
1061 | ehca_destroy_comp_pool(); | |
1062 | return ret; | |
1063 | }; | |
1064 | ||
e8e91f6b | 1065 | static void __exit ehca_module_exit(void) |
fab97220 HS |
1066 | { |
1067 | if (ehca_poll_all_eqs == 1) | |
1068 | del_timer_sync(&poll_eqs_timer); | |
1069 | ||
fab97220 HS |
1070 | ibmebus_unregister_driver(&ehca_driver); |
1071 | ||
263c24a2 SR |
1072 | unregister_memory_notifier(&ehca_mem_nb); |
1073 | ||
fab97220 HS |
1074 | ehca_destroy_slab_caches(); |
1075 | ||
1076 | ehca_destroy_comp_pool(); | |
1077 | ||
1078 | idr_destroy(&ehca_cq_idr); | |
1079 | idr_destroy(&ehca_qp_idr); | |
1080 | }; | |
1081 | ||
1082 | module_init(ehca_module_init); | |
1083 | module_exit(ehca_module_exit); |