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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 | ||
1d4d6da5 | 55 | #define HCAD_VERSION "0028" |
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) { | |
3750f605 | 307 | ehca_gen_err("Cannot query device properties. h_ret=%lli", |
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) { | |
3750f605 | 394 | ehca_gen_err("Cannot query port properties. h_ret=%lli", |
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 | 508 | shca->ib_device.mmap = ehca_mmap; |
0cf89dcd | 509 | shca->ib_device.dma_ops = &ehca_dma_mapping_ops; |
fab97220 | 510 | |
a6a12947 JF |
511 | if (EHCA_BMASK_GET(HCA_CAP_SRQ, shca->hca_cap)) { |
512 | shca->ib_device.uverbs_cmd_mask |= | |
513 | (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | | |
514 | (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | | |
515 | (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | | |
516 | (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ); | |
517 | ||
518 | shca->ib_device.create_srq = ehca_create_srq; | |
519 | shca->ib_device.modify_srq = ehca_modify_srq; | |
520 | shca->ib_device.query_srq = ehca_query_srq; | |
521 | shca->ib_device.destroy_srq = ehca_destroy_srq; | |
522 | shca->ib_device.post_srq_recv = ehca_post_srq_recv; | |
523 | } | |
524 | ||
fab97220 HS |
525 | return ret; |
526 | } | |
527 | ||
528 | static int ehca_create_aqp1(struct ehca_shca *shca, u32 port) | |
529 | { | |
530 | struct ehca_sport *sport = &shca->sport[port - 1]; | |
531 | struct ib_cq *ibcq; | |
532 | struct ib_qp *ibqp; | |
533 | struct ib_qp_init_attr qp_init_attr; | |
534 | int ret; | |
535 | ||
536 | if (sport->ibcq_aqp1) { | |
537 | ehca_err(&shca->ib_device, "AQP1 CQ is already created."); | |
538 | return -EPERM; | |
539 | } | |
540 | ||
2b94397a | 541 | ibcq = ib_create_cq(&shca->ib_device, NULL, NULL, (void *)(-1), 10, 0); |
fab97220 HS |
542 | if (IS_ERR(ibcq)) { |
543 | ehca_err(&shca->ib_device, "Cannot create AQP1 CQ."); | |
544 | return PTR_ERR(ibcq); | |
545 | } | |
546 | sport->ibcq_aqp1 = ibcq; | |
547 | ||
b8b50e35 | 548 | if (sport->ibqp_sqp[IB_QPT_GSI]) { |
fab97220 HS |
549 | ehca_err(&shca->ib_device, "AQP1 QP is already created."); |
550 | ret = -EPERM; | |
551 | goto create_aqp1; | |
552 | } | |
553 | ||
554 | memset(&qp_init_attr, 0, sizeof(struct ib_qp_init_attr)); | |
555 | qp_init_attr.send_cq = ibcq; | |
556 | qp_init_attr.recv_cq = ibcq; | |
557 | qp_init_attr.sq_sig_type = IB_SIGNAL_ALL_WR; | |
558 | qp_init_attr.cap.max_send_wr = 100; | |
559 | qp_init_attr.cap.max_recv_wr = 100; | |
560 | qp_init_attr.cap.max_send_sge = 2; | |
561 | qp_init_attr.cap.max_recv_sge = 1; | |
562 | qp_init_attr.qp_type = IB_QPT_GSI; | |
563 | qp_init_attr.port_num = port; | |
564 | qp_init_attr.qp_context = NULL; | |
565 | qp_init_attr.event_handler = NULL; | |
566 | qp_init_attr.srq = NULL; | |
567 | ||
568 | ibqp = ib_create_qp(&shca->pd->ib_pd, &qp_init_attr); | |
569 | if (IS_ERR(ibqp)) { | |
570 | ehca_err(&shca->ib_device, "Cannot create AQP1 QP."); | |
571 | ret = PTR_ERR(ibqp); | |
572 | goto create_aqp1; | |
573 | } | |
b8b50e35 | 574 | sport->ibqp_sqp[IB_QPT_GSI] = ibqp; |
fab97220 HS |
575 | |
576 | return 0; | |
577 | ||
578 | create_aqp1: | |
579 | ib_destroy_cq(sport->ibcq_aqp1); | |
580 | return ret; | |
581 | } | |
582 | ||
583 | static int ehca_destroy_aqp1(struct ehca_sport *sport) | |
584 | { | |
585 | int ret; | |
586 | ||
b8b50e35 | 587 | ret = ib_destroy_qp(sport->ibqp_sqp[IB_QPT_GSI]); |
fab97220 | 588 | if (ret) { |
e3722192 | 589 | ehca_gen_err("Cannot destroy AQP1 QP. ret=%i", ret); |
fab97220 HS |
590 | return ret; |
591 | } | |
592 | ||
593 | ret = ib_destroy_cq(sport->ibcq_aqp1); | |
594 | if (ret) | |
e3722192 | 595 | ehca_gen_err("Cannot destroy AQP1 CQ. ret=%i", ret); |
fab97220 HS |
596 | |
597 | return ret; | |
598 | } | |
599 | ||
600 | static ssize_t ehca_show_debug_level(struct device_driver *ddp, char *buf) | |
601 | { | |
4da27d6d | 602 | return snprintf(buf, PAGE_SIZE, "%d\n", ehca_debug_level); |
fab97220 HS |
603 | } |
604 | ||
605 | static ssize_t ehca_store_debug_level(struct device_driver *ddp, | |
606 | const char *buf, size_t count) | |
607 | { | |
608 | int value = (*buf) - '0'; | |
609 | if (value >= 0 && value <= 9) | |
610 | ehca_debug_level = value; | |
611 | return 1; | |
612 | } | |
613 | ||
e8e91f6b RD |
614 | static DRIVER_ATTR(debug_level, S_IRUSR | S_IWUSR, |
615 | ehca_show_debug_level, ehca_store_debug_level); | |
fab97220 | 616 | |
bba9b601 JF |
617 | static struct attribute *ehca_drv_attrs[] = { |
618 | &driver_attr_debug_level.attr, | |
619 | NULL | |
620 | }; | |
fab97220 | 621 | |
bba9b601 JF |
622 | static struct attribute_group ehca_drv_attr_grp = { |
623 | .attrs = ehca_drv_attrs | |
624 | }; | |
fab97220 | 625 | |
23b9c1ab GKH |
626 | static struct attribute_group *ehca_drv_attr_groups[] = { |
627 | &ehca_drv_attr_grp, | |
628 | NULL, | |
629 | }; | |
630 | ||
fab97220 HS |
631 | #define EHCA_RESOURCE_ATTR(name) \ |
632 | static ssize_t ehca_show_##name(struct device *dev, \ | |
633 | struct device_attribute *attr, \ | |
634 | char *buf) \ | |
635 | { \ | |
636 | struct ehca_shca *shca; \ | |
637 | struct hipz_query_hca *rblock; \ | |
638 | int data; \ | |
639 | \ | |
f899c2dd | 640 | shca = dev_get_drvdata(dev); \ |
fab97220 | 641 | \ |
f2d91361 | 642 | rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); \ |
fab97220 | 643 | if (!rblock) { \ |
898eb71c | 644 | dev_err(dev, "Can't allocate rblock memory.\n"); \ |
fab97220 HS |
645 | return 0; \ |
646 | } \ | |
647 | \ | |
648 | if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) { \ | |
898eb71c | 649 | dev_err(dev, "Can't query device properties\n"); \ |
7e28db5d | 650 | ehca_free_fw_ctrlblock(rblock); \ |
fab97220 HS |
651 | return 0; \ |
652 | } \ | |
653 | \ | |
654 | data = rblock->name; \ | |
7e28db5d | 655 | ehca_free_fw_ctrlblock(rblock); \ |
fab97220 HS |
656 | \ |
657 | if ((strcmp(#name, "num_ports") == 0) && (ehca_nr_ports == 1)) \ | |
658 | return snprintf(buf, 256, "1\n"); \ | |
659 | else \ | |
660 | return snprintf(buf, 256, "%d\n", data); \ | |
661 | \ | |
662 | } \ | |
663 | static DEVICE_ATTR(name, S_IRUGO, ehca_show_##name, NULL); | |
664 | ||
665 | EHCA_RESOURCE_ATTR(num_ports); | |
666 | EHCA_RESOURCE_ATTR(hw_ver); | |
667 | EHCA_RESOURCE_ATTR(max_eq); | |
668 | EHCA_RESOURCE_ATTR(cur_eq); | |
669 | EHCA_RESOURCE_ATTR(max_cq); | |
670 | EHCA_RESOURCE_ATTR(cur_cq); | |
671 | EHCA_RESOURCE_ATTR(max_qp); | |
672 | EHCA_RESOURCE_ATTR(cur_qp); | |
673 | EHCA_RESOURCE_ATTR(max_mr); | |
674 | EHCA_RESOURCE_ATTR(cur_mr); | |
675 | EHCA_RESOURCE_ATTR(max_mw); | |
676 | EHCA_RESOURCE_ATTR(cur_mw); | |
677 | EHCA_RESOURCE_ATTR(max_pd); | |
678 | EHCA_RESOURCE_ATTR(max_ah); | |
679 | ||
680 | static ssize_t ehca_show_adapter_handle(struct device *dev, | |
681 | struct device_attribute *attr, | |
682 | char *buf) | |
683 | { | |
f899c2dd | 684 | struct ehca_shca *shca = dev_get_drvdata(dev); |
fab97220 | 685 | |
3750f605 | 686 | return sprintf(buf, "%llx\n", shca->ipz_hca_handle.handle); |
fab97220 HS |
687 | |
688 | } | |
689 | static DEVICE_ATTR(adapter_handle, S_IRUGO, ehca_show_adapter_handle, NULL); | |
690 | ||
bba9b601 JF |
691 | static struct attribute *ehca_dev_attrs[] = { |
692 | &dev_attr_adapter_handle.attr, | |
693 | &dev_attr_num_ports.attr, | |
694 | &dev_attr_hw_ver.attr, | |
695 | &dev_attr_max_eq.attr, | |
696 | &dev_attr_cur_eq.attr, | |
697 | &dev_attr_max_cq.attr, | |
698 | &dev_attr_cur_cq.attr, | |
699 | &dev_attr_max_qp.attr, | |
700 | &dev_attr_cur_qp.attr, | |
701 | &dev_attr_max_mr.attr, | |
702 | &dev_attr_cur_mr.attr, | |
703 | &dev_attr_max_mw.attr, | |
704 | &dev_attr_cur_mw.attr, | |
705 | &dev_attr_max_pd.attr, | |
706 | &dev_attr_max_ah.attr, | |
707 | NULL | |
708 | }; | |
fab97220 | 709 | |
bba9b601 JF |
710 | static struct attribute_group ehca_dev_attr_grp = { |
711 | .attrs = ehca_dev_attrs | |
712 | }; | |
fab97220 | 713 | |
6b08f3ae | 714 | static int __devinit ehca_probe(struct of_device *dev, |
fab97220 HS |
715 | const struct of_device_id *id) |
716 | { | |
717 | struct ehca_shca *shca; | |
a7edd0e6 | 718 | const u64 *handle; |
fab97220 | 719 | struct ib_pd *ibpd; |
d227fa72 | 720 | int ret, i, eq_size; |
75c21ae9 | 721 | unsigned long flags; |
fab97220 | 722 | |
6b08f3ae | 723 | handle = of_get_property(dev->node, "ibm,hca-handle", NULL); |
fab97220 HS |
724 | if (!handle) { |
725 | ehca_gen_err("Cannot get eHCA handle for adapter: %s.", | |
6b08f3ae | 726 | dev->node->full_name); |
fab97220 HS |
727 | return -ENODEV; |
728 | } | |
729 | ||
730 | if (!(*handle)) { | |
731 | ehca_gen_err("Wrong eHCA handle for adapter: %s.", | |
6b08f3ae | 732 | dev->node->full_name); |
fab97220 HS |
733 | return -ENODEV; |
734 | } | |
735 | ||
736 | shca = (struct ehca_shca *)ib_alloc_device(sizeof(*shca)); | |
737 | if (!shca) { | |
738 | ehca_gen_err("Cannot allocate shca memory."); | |
739 | return -ENOMEM; | |
740 | } | |
19f42821 | 741 | |
c4ed790d | 742 | mutex_init(&shca->modify_mutex); |
d227fa72 SR |
743 | atomic_set(&shca->num_cqs, 0); |
744 | atomic_set(&shca->num_qps, 0); | |
19f42821 SR |
745 | shca->max_num_qps = ehca_max_qp; |
746 | shca->max_num_cqs = ehca_max_cq; | |
747 | ||
bbdd267e HNN |
748 | for (i = 0; i < ARRAY_SIZE(shca->sport); i++) |
749 | spin_lock_init(&shca->sport[i].mod_sqp_lock); | |
fab97220 | 750 | |
6b08f3ae | 751 | shca->ofdev = dev; |
fab97220 | 752 | shca->ipz_hca_handle.handle = *handle; |
f899c2dd | 753 | dev_set_drvdata(&dev->dev, shca); |
fab97220 HS |
754 | |
755 | ret = ehca_sense_attributes(shca); | |
756 | if (ret < 0) { | |
757 | ehca_gen_err("Cannot sense eHCA attributes."); | |
758 | goto probe1; | |
759 | } | |
760 | ||
0f248d9c | 761 | ret = ehca_init_device(shca); |
fab97220 | 762 | if (ret) { |
0f248d9c | 763 | ehca_gen_err("Cannot init ehca device struct"); |
fab97220 HS |
764 | goto probe1; |
765 | } | |
766 | ||
19f42821 | 767 | eq_size = 2 * shca->max_num_cqs + 4 * shca->max_num_qps; |
fab97220 | 768 | /* create event queues */ |
d227fa72 | 769 | ret = ehca_create_eq(shca, &shca->eq, EHCA_EQ, eq_size); |
fab97220 HS |
770 | if (ret) { |
771 | ehca_err(&shca->ib_device, "Cannot create EQ."); | |
0f248d9c | 772 | goto probe1; |
fab97220 HS |
773 | } |
774 | ||
775 | ret = ehca_create_eq(shca, &shca->neq, EHCA_NEQ, 513); | |
776 | if (ret) { | |
777 | ehca_err(&shca->ib_device, "Cannot create NEQ."); | |
778 | goto probe3; | |
779 | } | |
780 | ||
781 | /* create internal protection domain */ | |
2b94397a | 782 | ibpd = ehca_alloc_pd(&shca->ib_device, (void *)(-1), NULL); |
fab97220 HS |
783 | if (IS_ERR(ibpd)) { |
784 | ehca_err(&shca->ib_device, "Cannot create internal PD."); | |
785 | ret = PTR_ERR(ibpd); | |
786 | goto probe4; | |
787 | } | |
788 | ||
789 | shca->pd = container_of(ibpd, struct ehca_pd, ib_pd); | |
790 | shca->pd->ib_pd.device = &shca->ib_device; | |
791 | ||
792 | /* create internal max MR */ | |
793 | ret = ehca_reg_internal_maxmr(shca, shca->pd, &shca->maxmr); | |
794 | ||
795 | if (ret) { | |
e3722192 | 796 | ehca_err(&shca->ib_device, "Cannot create internal MR ret=%i", |
fab97220 HS |
797 | ret); |
798 | goto probe5; | |
799 | } | |
800 | ||
0f248d9c HNN |
801 | ret = ib_register_device(&shca->ib_device); |
802 | if (ret) { | |
803 | ehca_err(&shca->ib_device, | |
e3722192 | 804 | "ib_register_device() failed ret=%i", ret); |
0f248d9c HNN |
805 | goto probe6; |
806 | } | |
807 | ||
fab97220 HS |
808 | /* create AQP1 for port 1 */ |
809 | if (ehca_open_aqp1 == 1) { | |
810 | shca->sport[0].port_state = IB_PORT_DOWN; | |
811 | ret = ehca_create_aqp1(shca, 1); | |
812 | if (ret) { | |
813 | ehca_err(&shca->ib_device, | |
814 | "Cannot create AQP1 for port 1."); | |
0f248d9c | 815 | goto probe7; |
fab97220 HS |
816 | } |
817 | } | |
818 | ||
819 | /* create AQP1 for port 2 */ | |
820 | if ((ehca_open_aqp1 == 1) && (shca->num_ports == 2)) { | |
821 | shca->sport[1].port_state = IB_PORT_DOWN; | |
822 | ret = ehca_create_aqp1(shca, 2); | |
823 | if (ret) { | |
824 | ehca_err(&shca->ib_device, | |
825 | "Cannot create AQP1 for port 2."); | |
0f248d9c | 826 | goto probe8; |
fab97220 HS |
827 | } |
828 | } | |
829 | ||
6b08f3ae | 830 | ret = sysfs_create_group(&dev->dev.kobj, &ehca_dev_attr_grp); |
bba9b601 JF |
831 | if (ret) /* only complain; we can live without attributes */ |
832 | ehca_err(&shca->ib_device, | |
833 | "Cannot create device attributes ret=%d", ret); | |
fab97220 | 834 | |
75c21ae9 | 835 | spin_lock_irqsave(&shca_list_lock, flags); |
fab97220 | 836 | list_add(&shca->shca_list, &shca_list); |
75c21ae9 | 837 | spin_unlock_irqrestore(&shca_list_lock, flags); |
fab97220 HS |
838 | |
839 | return 0; | |
840 | ||
0f248d9c | 841 | probe8: |
fab97220 HS |
842 | ret = ehca_destroy_aqp1(&shca->sport[0]); |
843 | if (ret) | |
844 | ehca_err(&shca->ib_device, | |
e3722192 | 845 | "Cannot destroy AQP1 for port 1. ret=%i", ret); |
fab97220 | 846 | |
0f248d9c HNN |
847 | probe7: |
848 | ib_unregister_device(&shca->ib_device); | |
849 | ||
fab97220 HS |
850 | probe6: |
851 | ret = ehca_dereg_internal_maxmr(shca); | |
852 | if (ret) | |
853 | ehca_err(&shca->ib_device, | |
854 | "Cannot destroy internal MR. ret=%x", ret); | |
855 | ||
856 | probe5: | |
857 | ret = ehca_dealloc_pd(&shca->pd->ib_pd); | |
858 | if (ret) | |
859 | ehca_err(&shca->ib_device, | |
860 | "Cannot destroy internal PD. ret=%x", ret); | |
861 | ||
862 | probe4: | |
863 | ret = ehca_destroy_eq(shca, &shca->neq); | |
864 | if (ret) | |
865 | ehca_err(&shca->ib_device, | |
866 | "Cannot destroy NEQ. ret=%x", ret); | |
867 | ||
868 | probe3: | |
869 | ret = ehca_destroy_eq(shca, &shca->eq); | |
870 | if (ret) | |
871 | ehca_err(&shca->ib_device, | |
872 | "Cannot destroy EQ. ret=%x", ret); | |
873 | ||
fab97220 HS |
874 | probe1: |
875 | ib_dealloc_device(&shca->ib_device); | |
876 | ||
877 | return -EINVAL; | |
878 | } | |
879 | ||
6b08f3ae | 880 | static int __devexit ehca_remove(struct of_device *dev) |
fab97220 | 881 | { |
f899c2dd | 882 | struct ehca_shca *shca = dev_get_drvdata(&dev->dev); |
75c21ae9 | 883 | unsigned long flags; |
fab97220 HS |
884 | int ret; |
885 | ||
6b08f3ae | 886 | sysfs_remove_group(&dev->dev.kobj, &ehca_dev_attr_grp); |
fab97220 HS |
887 | |
888 | if (ehca_open_aqp1 == 1) { | |
889 | int i; | |
890 | for (i = 0; i < shca->num_ports; i++) { | |
891 | ret = ehca_destroy_aqp1(&shca->sport[i]); | |
892 | if (ret) | |
893 | ehca_err(&shca->ib_device, | |
894 | "Cannot destroy AQP1 for port %x " | |
e3722192 | 895 | "ret=%i", ret, i); |
fab97220 HS |
896 | } |
897 | } | |
898 | ||
899 | ib_unregister_device(&shca->ib_device); | |
900 | ||
901 | ret = ehca_dereg_internal_maxmr(shca); | |
902 | if (ret) | |
903 | ehca_err(&shca->ib_device, | |
e3722192 | 904 | "Cannot destroy internal MR. ret=%i", ret); |
fab97220 HS |
905 | |
906 | ret = ehca_dealloc_pd(&shca->pd->ib_pd); | |
907 | if (ret) | |
908 | ehca_err(&shca->ib_device, | |
e3722192 | 909 | "Cannot destroy internal PD. ret=%i", ret); |
fab97220 HS |
910 | |
911 | ret = ehca_destroy_eq(shca, &shca->eq); | |
912 | if (ret) | |
e3722192 | 913 | ehca_err(&shca->ib_device, "Cannot destroy EQ. ret=%i", ret); |
fab97220 HS |
914 | |
915 | ret = ehca_destroy_eq(shca, &shca->neq); | |
916 | if (ret) | |
e3722192 | 917 | ehca_err(&shca->ib_device, "Canot destroy NEQ. ret=%i", ret); |
fab97220 HS |
918 | |
919 | ib_dealloc_device(&shca->ib_device); | |
920 | ||
75c21ae9 | 921 | spin_lock_irqsave(&shca_list_lock, flags); |
fab97220 | 922 | list_del(&shca->shca_list); |
75c21ae9 | 923 | spin_unlock_irqrestore(&shca_list_lock, flags); |
fab97220 HS |
924 | |
925 | return ret; | |
926 | } | |
927 | ||
928 | static struct of_device_id ehca_device_table[] = | |
929 | { | |
930 | { | |
931 | .name = "lhca", | |
932 | .compatible = "IBM,lhca", | |
933 | }, | |
934 | {}, | |
935 | }; | |
038919f2 | 936 | MODULE_DEVICE_TABLE(of, ehca_device_table); |
fab97220 | 937 | |
6b08f3ae JF |
938 | static struct of_platform_driver ehca_driver = { |
939 | .name = "ehca", | |
940 | .match_table = ehca_device_table, | |
941 | .probe = ehca_probe, | |
942 | .remove = ehca_remove, | |
23b9c1ab GKH |
943 | .driver = { |
944 | .groups = ehca_drv_attr_groups, | |
945 | }, | |
fab97220 HS |
946 | }; |
947 | ||
948 | void ehca_poll_eqs(unsigned long data) | |
949 | { | |
950 | struct ehca_shca *shca; | |
951 | ||
952 | spin_lock(&shca_list_lock); | |
953 | list_for_each_entry(shca, &shca_list, shca_list) { | |
78d8d5f9 HNN |
954 | if (shca->eq.is_initialized) { |
955 | /* call deadman proc only if eq ptr does not change */ | |
956 | struct ehca_eq *eq = &shca->eq; | |
957 | int max = 3; | |
958 | volatile u64 q_ofs, q_ofs2; | |
7ddccb23 | 959 | unsigned long flags; |
78d8d5f9 HNN |
960 | spin_lock_irqsave(&eq->spinlock, flags); |
961 | q_ofs = eq->ipz_queue.current_q_offset; | |
962 | spin_unlock_irqrestore(&eq->spinlock, flags); | |
963 | do { | |
964 | spin_lock_irqsave(&eq->spinlock, flags); | |
965 | q_ofs2 = eq->ipz_queue.current_q_offset; | |
966 | spin_unlock_irqrestore(&eq->spinlock, flags); | |
967 | max--; | |
968 | } while (q_ofs == q_ofs2 && max > 0); | |
969 | if (q_ofs == q_ofs2) | |
970 | ehca_process_eq(shca, 0); | |
971 | } | |
fab97220 | 972 | } |
1a7d2dce | 973 | mod_timer(&poll_eqs_timer, round_jiffies(jiffies + HZ)); |
fab97220 HS |
974 | spin_unlock(&shca_list_lock); |
975 | } | |
976 | ||
263c24a2 SR |
977 | static int ehca_mem_notifier(struct notifier_block *nb, |
978 | unsigned long action, void *data) | |
979 | { | |
980 | static unsigned long ehca_dmem_warn_time; | |
75c21ae9 | 981 | unsigned long flags; |
263c24a2 SR |
982 | |
983 | switch (action) { | |
984 | case MEM_CANCEL_OFFLINE: | |
985 | case MEM_CANCEL_ONLINE: | |
986 | case MEM_ONLINE: | |
987 | case MEM_OFFLINE: | |
988 | return NOTIFY_OK; | |
989 | case MEM_GOING_ONLINE: | |
990 | case MEM_GOING_OFFLINE: | |
991 | /* only ok if no hca is attached to the lpar */ | |
75c21ae9 | 992 | spin_lock_irqsave(&shca_list_lock, flags); |
263c24a2 | 993 | if (list_empty(&shca_list)) { |
75c21ae9 | 994 | spin_unlock_irqrestore(&shca_list_lock, flags); |
263c24a2 SR |
995 | return NOTIFY_OK; |
996 | } else { | |
75c21ae9 | 997 | spin_unlock_irqrestore(&shca_list_lock, flags); |
263c24a2 SR |
998 | if (printk_timed_ratelimit(&ehca_dmem_warn_time, |
999 | 30 * 1000)) | |
1000 | ehca_gen_err("DMEM operations are not allowed" | |
6b1f9d64 | 1001 | "in conjunction with eHCA"); |
263c24a2 SR |
1002 | return NOTIFY_BAD; |
1003 | } | |
1004 | } | |
1005 | return NOTIFY_OK; | |
1006 | } | |
1007 | ||
1008 | static struct notifier_block ehca_mem_nb = { | |
1009 | .notifier_call = ehca_mem_notifier, | |
1010 | }; | |
1011 | ||
e8e91f6b | 1012 | static int __init ehca_module_init(void) |
fab97220 HS |
1013 | { |
1014 | int ret; | |
1015 | ||
1016 | printk(KERN_INFO "eHCA Infiniband Device Driver " | |
39089e77 | 1017 | "(Version " HCAD_VERSION ")\n"); |
fab97220 | 1018 | |
2b94397a HNN |
1019 | ret = ehca_create_comp_pool(); |
1020 | if (ret) { | |
fab97220 HS |
1021 | ehca_gen_err("Cannot create comp pool."); |
1022 | return ret; | |
1023 | } | |
1024 | ||
2b94397a HNN |
1025 | ret = ehca_create_slab_caches(); |
1026 | if (ret) { | |
fab97220 HS |
1027 | ehca_gen_err("Cannot create SLAB caches"); |
1028 | ret = -ENOMEM; | |
1029 | goto module_init1; | |
1030 | } | |
1031 | ||
0cf89dcd HH |
1032 | ret = ehca_create_busmap(); |
1033 | if (ret) { | |
1034 | ehca_gen_err("Cannot create busmap."); | |
1035 | goto module_init2; | |
1036 | } | |
1037 | ||
2b94397a HNN |
1038 | ret = ibmebus_register_driver(&ehca_driver); |
1039 | if (ret) { | |
fab97220 HS |
1040 | ehca_gen_err("Cannot register eHCA device driver"); |
1041 | ret = -EINVAL; | |
0cf89dcd | 1042 | goto module_init3; |
fab97220 HS |
1043 | } |
1044 | ||
263c24a2 SR |
1045 | ret = register_memory_notifier(&ehca_mem_nb); |
1046 | if (ret) { | |
1047 | ehca_gen_err("Failed registering memory add/remove notifier"); | |
0cf89dcd | 1048 | goto module_init4; |
263c24a2 SR |
1049 | } |
1050 | ||
fab97220 HS |
1051 | if (ehca_poll_all_eqs != 1) { |
1052 | ehca_gen_err("WARNING!!!"); | |
1053 | ehca_gen_err("It is possible to lose interrupts."); | |
1054 | } else { | |
1055 | init_timer(&poll_eqs_timer); | |
1056 | poll_eqs_timer.function = ehca_poll_eqs; | |
1057 | poll_eqs_timer.expires = jiffies + HZ; | |
1058 | add_timer(&poll_eqs_timer); | |
1059 | } | |
1060 | ||
1061 | return 0; | |
1062 | ||
0cf89dcd | 1063 | module_init4: |
263c24a2 SR |
1064 | ibmebus_unregister_driver(&ehca_driver); |
1065 | ||
0cf89dcd HH |
1066 | module_init3: |
1067 | ehca_destroy_busmap(); | |
1068 | ||
fab97220 HS |
1069 | module_init2: |
1070 | ehca_destroy_slab_caches(); | |
1071 | ||
1072 | module_init1: | |
1073 | ehca_destroy_comp_pool(); | |
1074 | return ret; | |
1075 | }; | |
1076 | ||
e8e91f6b | 1077 | static void __exit ehca_module_exit(void) |
fab97220 HS |
1078 | { |
1079 | if (ehca_poll_all_eqs == 1) | |
1080 | del_timer_sync(&poll_eqs_timer); | |
1081 | ||
fab97220 HS |
1082 | ibmebus_unregister_driver(&ehca_driver); |
1083 | ||
263c24a2 SR |
1084 | unregister_memory_notifier(&ehca_mem_nb); |
1085 | ||
0cf89dcd HH |
1086 | ehca_destroy_busmap(); |
1087 | ||
fab97220 HS |
1088 | ehca_destroy_slab_caches(); |
1089 | ||
1090 | ehca_destroy_comp_pool(); | |
1091 | ||
1092 | idr_destroy(&ehca_cq_idr); | |
1093 | idr_destroy(&ehca_qp_idr); | |
1094 | }; | |
1095 | ||
1096 | module_init(ehca_module_init); | |
1097 | module_exit(ehca_module_exit); |