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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 | ||
50d40b8e | 55 | #define HCAD_VERSION "0029" |
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 | |
90ab5ee9 | 62 | static bool ehca_open_aqp1 = 0; |
e8e91f6b | 63 | static int ehca_hw_level = 0; |
90ab5ee9 | 64 | static bool ehca_poll_all_eqs = 1; |
e8e91f6b | 65 | |
fab97220 | 66 | int ehca_debug_level = 0; |
50d40b8e | 67 | int ehca_nr_ports = -1; |
90ab5ee9 | 68 | bool ehca_use_hp_mr = 0; |
fab97220 | 69 | int ehca_port_act_time = 30; |
fab97220 | 70 | int ehca_static_rate = -1; |
90ab5ee9 | 71 | bool 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); | |
69116f27 | 85 | module_param_named(lock_hcalls, ehca_lock_hcalls, bint, 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, |
50d40b8e AS |
98 | "number of connected ports (-1: autodetect (default), " |
99 | "1: port one only, 2: two ports)"); | |
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 | 125 | static LIST_HEAD(shca_list); /* list of all registered ehcas */ |
94202694 | 126 | 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 | 213 | ehca_cleanup_small_qp_cache(); |
f29fa1cf | 214 | ret = -ENOMEM; |
e2f81daf | 215 | goto create_slab_caches6; |
7e28db5d HNN |
216 | } |
217 | #endif | |
fab97220 HS |
218 | return 0; |
219 | ||
e2f81daf SR |
220 | create_slab_caches6: |
221 | ehca_cleanup_mrmw_cache(); | |
222 | ||
fab97220 HS |
223 | create_slab_caches5: |
224 | ehca_cleanup_av_cache(); | |
225 | ||
226 | create_slab_caches4: | |
227 | ehca_cleanup_qp_cache(); | |
228 | ||
229 | create_slab_caches3: | |
230 | ehca_cleanup_cq_cache(); | |
231 | ||
232 | create_slab_caches2: | |
233 | ehca_cleanup_pd_cache(); | |
234 | ||
235 | return ret; | |
236 | } | |
237 | ||
238 | static void ehca_destroy_slab_caches(void) | |
239 | { | |
e2f81daf | 240 | ehca_cleanup_small_qp_cache(); |
fab97220 HS |
241 | ehca_cleanup_mrmw_cache(); |
242 | ehca_cleanup_av_cache(); | |
243 | ehca_cleanup_qp_cache(); | |
244 | ehca_cleanup_cq_cache(); | |
245 | ehca_cleanup_pd_cache(); | |
7e28db5d HNN |
246 | #ifdef CONFIG_PPC_64K_PAGES |
247 | if (ctblk_cache) | |
248 | kmem_cache_destroy(ctblk_cache); | |
249 | #endif | |
fab97220 HS |
250 | } |
251 | ||
2b94397a HNN |
252 | #define EHCA_HCAAVER EHCA_BMASK_IBM(32, 39) |
253 | #define EHCA_REVID EHCA_BMASK_IBM(40, 63) | |
fab97220 | 254 | |
91f13aa3 JF |
255 | static struct cap_descr { |
256 | u64 mask; | |
257 | char *descr; | |
258 | } hca_cap_descr[] = { | |
259 | { HCA_CAP_AH_PORT_NR_CHECK, "HCA_CAP_AH_PORT_NR_CHECK" }, | |
260 | { HCA_CAP_ATOMIC, "HCA_CAP_ATOMIC" }, | |
261 | { HCA_CAP_AUTO_PATH_MIG, "HCA_CAP_AUTO_PATH_MIG" }, | |
262 | { HCA_CAP_BAD_P_KEY_CTR, "HCA_CAP_BAD_P_KEY_CTR" }, | |
263 | { HCA_CAP_SQD_RTS_PORT_CHANGE, "HCA_CAP_SQD_RTS_PORT_CHANGE" }, | |
264 | { HCA_CAP_CUR_QP_STATE_MOD, "HCA_CAP_CUR_QP_STATE_MOD" }, | |
265 | { HCA_CAP_INIT_TYPE, "HCA_CAP_INIT_TYPE" }, | |
266 | { HCA_CAP_PORT_ACTIVE_EVENT, "HCA_CAP_PORT_ACTIVE_EVENT" }, | |
267 | { HCA_CAP_Q_KEY_VIOL_CTR, "HCA_CAP_Q_KEY_VIOL_CTR" }, | |
268 | { HCA_CAP_WQE_RESIZE, "HCA_CAP_WQE_RESIZE" }, | |
269 | { HCA_CAP_RAW_PACKET_MCAST, "HCA_CAP_RAW_PACKET_MCAST" }, | |
270 | { HCA_CAP_SHUTDOWN_PORT, "HCA_CAP_SHUTDOWN_PORT" }, | |
271 | { HCA_CAP_RC_LL_QP, "HCA_CAP_RC_LL_QP" }, | |
272 | { HCA_CAP_SRQ, "HCA_CAP_SRQ" }, | |
273 | { HCA_CAP_UD_LL_QP, "HCA_CAP_UD_LL_QP" }, | |
274 | { HCA_CAP_RESIZE_MR, "HCA_CAP_RESIZE_MR" }, | |
275 | { HCA_CAP_MINI_QP, "HCA_CAP_MINI_QP" }, | |
4faf7757 | 276 | { HCA_CAP_H_ALLOC_RES_SYNC, "HCA_CAP_H_ALLOC_RES_SYNC" }, |
91f13aa3 JF |
277 | }; |
278 | ||
abc39d36 | 279 | static int ehca_sense_attributes(struct ehca_shca *shca) |
fab97220 | 280 | { |
91f13aa3 | 281 | int i, ret = 0; |
fab97220 HS |
282 | u64 h_ret; |
283 | struct hipz_query_hca *rblock; | |
91f13aa3 | 284 | struct hipz_query_port *port; |
4da27d6d | 285 | const char *loc_code; |
fab97220 | 286 | |
abc39d36 JF |
287 | static const u32 pgsize_map[] = { |
288 | HCA_CAP_MR_PGSIZE_4K, 0x1000, | |
289 | HCA_CAP_MR_PGSIZE_64K, 0x10000, | |
290 | HCA_CAP_MR_PGSIZE_1M, 0x100000, | |
291 | HCA_CAP_MR_PGSIZE_16M, 0x1000000, | |
292 | }; | |
293 | ||
4da27d6d | 294 | ehca_gen_dbg("Probing adapter %s...", |
61c7a080 GL |
295 | shca->ofdev->dev.of_node->full_name); |
296 | loc_code = of_get_property(shca->ofdev->dev.of_node, "ibm,loc-code", | |
297 | NULL); | |
4da27d6d JF |
298 | if (loc_code) |
299 | ehca_gen_dbg(" ... location lode=%s", loc_code); | |
300 | ||
f2d91361 | 301 | rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); |
fab97220 HS |
302 | if (!rblock) { |
303 | ehca_gen_err("Cannot allocate rblock memory."); | |
304 | return -ENOMEM; | |
305 | } | |
306 | ||
307 | h_ret = hipz_h_query_hca(shca->ipz_hca_handle, rblock); | |
308 | if (h_ret != H_SUCCESS) { | |
3750f605 | 309 | ehca_gen_err("Cannot query device properties. h_ret=%lli", |
fab97220 HS |
310 | h_ret); |
311 | ret = -EPERM; | |
91f13aa3 | 312 | goto sense_attributes1; |
fab97220 HS |
313 | } |
314 | ||
315 | if (ehca_nr_ports == 1) | |
316 | shca->num_ports = 1; | |
317 | else | |
318 | shca->num_ports = (u8)rblock->num_ports; | |
319 | ||
320 | ehca_gen_dbg(" ... found %x ports", rblock->num_ports); | |
321 | ||
322 | if (ehca_hw_level == 0) { | |
323 | u32 hcaaver; | |
324 | u32 revid; | |
325 | ||
326 | hcaaver = EHCA_BMASK_GET(EHCA_HCAAVER, rblock->hw_ver); | |
327 | revid = EHCA_BMASK_GET(EHCA_REVID, rblock->hw_ver); | |
328 | ||
329 | ehca_gen_dbg(" ... hardware version=%x:%x", hcaaver, revid); | |
330 | ||
fbb9318b JF |
331 | if (hcaaver == 1) { |
332 | if (revid <= 3) | |
333 | shca->hw_level = 0x10 | (revid + 1); | |
334 | else | |
335 | shca->hw_level = 0x14; | |
336 | } else if (hcaaver == 2) { | |
337 | if (revid == 0) | |
338 | shca->hw_level = 0x21; | |
339 | else if (revid == 0x10) | |
340 | shca->hw_level = 0x22; | |
341 | else if (revid == 0x20 || revid == 0x21) | |
342 | shca->hw_level = 0x23; | |
343 | } | |
344 | ||
345 | if (!shca->hw_level) { | |
91f13aa3 JF |
346 | ehca_gen_warn("unknown hardware version" |
347 | " - assuming default level"); | |
348 | shca->hw_level = 0x22; | |
349 | } | |
fbb9318b JF |
350 | } else |
351 | shca->hw_level = ehca_hw_level; | |
fab97220 HS |
352 | ehca_gen_dbg(" ... hardware level=%x", shca->hw_level); |
353 | ||
91f13aa3 JF |
354 | shca->hca_cap = rblock->hca_cap_indicators; |
355 | ehca_gen_dbg(" ... HCA capabilities:"); | |
356 | for (i = 0; i < ARRAY_SIZE(hca_cap_descr); i++) | |
357 | if (EHCA_BMASK_GET(hca_cap_descr[i].mask, shca->hca_cap)) | |
358 | ehca_gen_dbg(" %s", hca_cap_descr[i].descr); | |
359 | ||
4faf7757 JF |
360 | /* Autodetect hCall locking -- the "H_ALLOC_RESOURCE synced" flag is |
361 | * a firmware property, so it's valid across all adapters | |
362 | */ | |
363 | if (ehca_lock_hcalls == -1) | |
91fb0dd9 AS |
364 | ehca_lock_hcalls = !EHCA_BMASK_GET(HCA_CAP_H_ALLOC_RES_SYNC, |
365 | shca->hca_cap); | |
4faf7757 | 366 | |
abc39d36 JF |
367 | /* translate supported MR page sizes; always support 4K */ |
368 | shca->hca_cap_mr_pgsize = EHCA_PAGESIZE; | |
a7607c9b JF |
369 | for (i = 0; i < ARRAY_SIZE(pgsize_map); i += 2) |
370 | if (rblock->memory_page_size_supported & pgsize_map[i]) | |
371 | shca->hca_cap_mr_pgsize |= pgsize_map[i + 1]; | |
5bb7d929 | 372 | |
d227fa72 | 373 | /* Set maximum number of CQs and QPs to calculate EQ size */ |
19f42821 SR |
374 | if (shca->max_num_qps == -1) |
375 | shca->max_num_qps = min_t(int, rblock->max_qp, | |
376 | EHCA_MAX_NUM_QUEUES); | |
377 | else if (shca->max_num_qps < 1 || shca->max_num_qps > rblock->max_qp) { | |
378 | ehca_gen_warn("The requested number of QPs is out of range " | |
379 | "(1 - %i) specified by HW. Value is set to %i", | |
380 | rblock->max_qp, rblock->max_qp); | |
381 | shca->max_num_qps = rblock->max_qp; | |
d227fa72 SR |
382 | } |
383 | ||
19f42821 SR |
384 | if (shca->max_num_cqs == -1) |
385 | shca->max_num_cqs = min_t(int, rblock->max_cq, | |
386 | EHCA_MAX_NUM_QUEUES); | |
387 | else if (shca->max_num_cqs < 1 || shca->max_num_cqs > rblock->max_cq) { | |
388 | ehca_gen_warn("The requested number of CQs is out of range " | |
389 | "(1 - %i) specified by HW. Value is set to %i", | |
390 | rblock->max_cq, rblock->max_cq); | |
d227fa72 SR |
391 | } |
392 | ||
abc39d36 | 393 | /* query max MTU from first port -- it's the same for all ports */ |
2b94397a | 394 | port = (struct hipz_query_port *)rblock; |
91f13aa3 JF |
395 | h_ret = hipz_h_query_port(shca->ipz_hca_handle, 1, port); |
396 | if (h_ret != H_SUCCESS) { | |
3750f605 | 397 | ehca_gen_err("Cannot query port properties. h_ret=%lli", |
91f13aa3 JF |
398 | h_ret); |
399 | ret = -EPERM; | |
400 | goto sense_attributes1; | |
401 | } | |
402 | ||
403 | shca->max_mtu = port->max_mtu; | |
404 | ||
405 | sense_attributes1: | |
7e28db5d | 406 | ehca_free_fw_ctrlblock(rblock); |
fab97220 HS |
407 | return ret; |
408 | } | |
409 | ||
410 | static int init_node_guid(struct ehca_shca *shca) | |
411 | { | |
412 | int ret = 0; | |
413 | struct hipz_query_hca *rblock; | |
414 | ||
f2d91361 | 415 | rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); |
fab97220 HS |
416 | if (!rblock) { |
417 | ehca_err(&shca->ib_device, "Can't allocate rblock memory."); | |
418 | return -ENOMEM; | |
419 | } | |
420 | ||
421 | if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) { | |
422 | ehca_err(&shca->ib_device, "Can't query device properties"); | |
423 | ret = -EINVAL; | |
424 | goto init_node_guid1; | |
425 | } | |
426 | ||
427 | memcpy(&shca->ib_device.node_guid, &rblock->node_guid, sizeof(u64)); | |
428 | ||
429 | init_node_guid1: | |
7e28db5d | 430 | ehca_free_fw_ctrlblock(rblock); |
fab97220 HS |
431 | return ret; |
432 | } | |
433 | ||
e8e91f6b | 434 | static int ehca_init_device(struct ehca_shca *shca) |
fab97220 HS |
435 | { |
436 | int ret; | |
437 | ||
438 | ret = init_node_guid(shca); | |
439 | if (ret) | |
440 | return ret; | |
441 | ||
442 | strlcpy(shca->ib_device.name, "ehca%d", IB_DEVICE_NAME_MAX); | |
443 | shca->ib_device.owner = THIS_MODULE; | |
444 | ||
5281a4b8 | 445 | shca->ib_device.uverbs_abi_ver = 8; |
fab97220 HS |
446 | shca->ib_device.uverbs_cmd_mask = |
447 | (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | | |
448 | (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | | |
449 | (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | | |
450 | (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | | |
451 | (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | | |
452 | (1ull << IB_USER_VERBS_CMD_REG_MR) | | |
453 | (1ull << IB_USER_VERBS_CMD_DEREG_MR) | | |
454 | (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | | |
455 | (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | | |
456 | (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | | |
457 | (1ull << IB_USER_VERBS_CMD_CREATE_QP) | | |
458 | (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | | |
459 | (1ull << IB_USER_VERBS_CMD_QUERY_QP) | | |
460 | (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | | |
461 | (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | | |
462 | (1ull << IB_USER_VERBS_CMD_DETACH_MCAST); | |
463 | ||
07ebafba | 464 | shca->ib_device.node_type = RDMA_NODE_IB_CA; |
fab97220 | 465 | shca->ib_device.phys_port_cnt = shca->num_ports; |
f4fd0b22 | 466 | shca->ib_device.num_comp_vectors = 1; |
6b08f3ae | 467 | shca->ib_device.dma_device = &shca->ofdev->dev; |
fab97220 HS |
468 | shca->ib_device.query_device = ehca_query_device; |
469 | shca->ib_device.query_port = ehca_query_port; | |
470 | shca->ib_device.query_gid = ehca_query_gid; | |
471 | shca->ib_device.query_pkey = ehca_query_pkey; | |
472 | /* shca->in_device.modify_device = ehca_modify_device */ | |
473 | shca->ib_device.modify_port = ehca_modify_port; | |
474 | shca->ib_device.alloc_ucontext = ehca_alloc_ucontext; | |
475 | shca->ib_device.dealloc_ucontext = ehca_dealloc_ucontext; | |
476 | shca->ib_device.alloc_pd = ehca_alloc_pd; | |
477 | shca->ib_device.dealloc_pd = ehca_dealloc_pd; | |
478 | shca->ib_device.create_ah = ehca_create_ah; | |
479 | /* shca->ib_device.modify_ah = ehca_modify_ah; */ | |
480 | shca->ib_device.query_ah = ehca_query_ah; | |
481 | shca->ib_device.destroy_ah = ehca_destroy_ah; | |
482 | shca->ib_device.create_qp = ehca_create_qp; | |
483 | shca->ib_device.modify_qp = ehca_modify_qp; | |
484 | shca->ib_device.query_qp = ehca_query_qp; | |
485 | shca->ib_device.destroy_qp = ehca_destroy_qp; | |
486 | shca->ib_device.post_send = ehca_post_send; | |
487 | shca->ib_device.post_recv = ehca_post_recv; | |
488 | shca->ib_device.create_cq = ehca_create_cq; | |
489 | shca->ib_device.destroy_cq = ehca_destroy_cq; | |
490 | shca->ib_device.resize_cq = ehca_resize_cq; | |
491 | shca->ib_device.poll_cq = ehca_poll_cq; | |
492 | /* shca->ib_device.peek_cq = ehca_peek_cq; */ | |
493 | shca->ib_device.req_notify_cq = ehca_req_notify_cq; | |
494 | /* shca->ib_device.req_ncomp_notif = ehca_req_ncomp_notif; */ | |
495 | shca->ib_device.get_dma_mr = ehca_get_dma_mr; | |
496 | shca->ib_device.reg_phys_mr = ehca_reg_phys_mr; | |
497 | shca->ib_device.reg_user_mr = ehca_reg_user_mr; | |
498 | shca->ib_device.query_mr = ehca_query_mr; | |
499 | shca->ib_device.dereg_mr = ehca_dereg_mr; | |
500 | shca->ib_device.rereg_phys_mr = ehca_rereg_phys_mr; | |
501 | shca->ib_device.alloc_mw = ehca_alloc_mw; | |
502 | shca->ib_device.bind_mw = ehca_bind_mw; | |
503 | shca->ib_device.dealloc_mw = ehca_dealloc_mw; | |
504 | shca->ib_device.alloc_fmr = ehca_alloc_fmr; | |
505 | shca->ib_device.map_phys_fmr = ehca_map_phys_fmr; | |
506 | shca->ib_device.unmap_fmr = ehca_unmap_fmr; | |
507 | shca->ib_device.dealloc_fmr = ehca_dealloc_fmr; | |
508 | shca->ib_device.attach_mcast = ehca_attach_mcast; | |
509 | shca->ib_device.detach_mcast = ehca_detach_mcast; | |
2b5e6b12 | 510 | shca->ib_device.process_mad = ehca_process_mad; |
fab97220 | 511 | shca->ib_device.mmap = ehca_mmap; |
0cf89dcd | 512 | shca->ib_device.dma_ops = &ehca_dma_mapping_ops; |
fab97220 | 513 | |
a6a12947 JF |
514 | if (EHCA_BMASK_GET(HCA_CAP_SRQ, shca->hca_cap)) { |
515 | shca->ib_device.uverbs_cmd_mask |= | |
516 | (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | | |
517 | (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | | |
518 | (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | | |
519 | (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ); | |
520 | ||
521 | shca->ib_device.create_srq = ehca_create_srq; | |
522 | shca->ib_device.modify_srq = ehca_modify_srq; | |
523 | shca->ib_device.query_srq = ehca_query_srq; | |
524 | shca->ib_device.destroy_srq = ehca_destroy_srq; | |
525 | shca->ib_device.post_srq_recv = ehca_post_srq_recv; | |
526 | } | |
527 | ||
fab97220 HS |
528 | return ret; |
529 | } | |
530 | ||
531 | static int ehca_create_aqp1(struct ehca_shca *shca, u32 port) | |
532 | { | |
533 | struct ehca_sport *sport = &shca->sport[port - 1]; | |
534 | struct ib_cq *ibcq; | |
535 | struct ib_qp *ibqp; | |
536 | struct ib_qp_init_attr qp_init_attr; | |
537 | int ret; | |
538 | ||
539 | if (sport->ibcq_aqp1) { | |
540 | ehca_err(&shca->ib_device, "AQP1 CQ is already created."); | |
541 | return -EPERM; | |
542 | } | |
543 | ||
2b94397a | 544 | ibcq = ib_create_cq(&shca->ib_device, NULL, NULL, (void *)(-1), 10, 0); |
fab97220 HS |
545 | if (IS_ERR(ibcq)) { |
546 | ehca_err(&shca->ib_device, "Cannot create AQP1 CQ."); | |
547 | return PTR_ERR(ibcq); | |
548 | } | |
549 | sport->ibcq_aqp1 = ibcq; | |
550 | ||
b8b50e35 | 551 | if (sport->ibqp_sqp[IB_QPT_GSI]) { |
fab97220 HS |
552 | ehca_err(&shca->ib_device, "AQP1 QP is already created."); |
553 | ret = -EPERM; | |
554 | goto create_aqp1; | |
555 | } | |
556 | ||
557 | memset(&qp_init_attr, 0, sizeof(struct ib_qp_init_attr)); | |
558 | qp_init_attr.send_cq = ibcq; | |
559 | qp_init_attr.recv_cq = ibcq; | |
560 | qp_init_attr.sq_sig_type = IB_SIGNAL_ALL_WR; | |
561 | qp_init_attr.cap.max_send_wr = 100; | |
562 | qp_init_attr.cap.max_recv_wr = 100; | |
563 | qp_init_attr.cap.max_send_sge = 2; | |
564 | qp_init_attr.cap.max_recv_sge = 1; | |
565 | qp_init_attr.qp_type = IB_QPT_GSI; | |
566 | qp_init_attr.port_num = port; | |
567 | qp_init_attr.qp_context = NULL; | |
568 | qp_init_attr.event_handler = NULL; | |
569 | qp_init_attr.srq = NULL; | |
570 | ||
571 | ibqp = ib_create_qp(&shca->pd->ib_pd, &qp_init_attr); | |
572 | if (IS_ERR(ibqp)) { | |
573 | ehca_err(&shca->ib_device, "Cannot create AQP1 QP."); | |
574 | ret = PTR_ERR(ibqp); | |
575 | goto create_aqp1; | |
576 | } | |
b8b50e35 | 577 | sport->ibqp_sqp[IB_QPT_GSI] = ibqp; |
fab97220 HS |
578 | |
579 | return 0; | |
580 | ||
581 | create_aqp1: | |
582 | ib_destroy_cq(sport->ibcq_aqp1); | |
583 | return ret; | |
584 | } | |
585 | ||
586 | static int ehca_destroy_aqp1(struct ehca_sport *sport) | |
587 | { | |
588 | int ret; | |
589 | ||
b8b50e35 | 590 | ret = ib_destroy_qp(sport->ibqp_sqp[IB_QPT_GSI]); |
fab97220 | 591 | if (ret) { |
e3722192 | 592 | ehca_gen_err("Cannot destroy AQP1 QP. ret=%i", ret); |
fab97220 HS |
593 | return ret; |
594 | } | |
595 | ||
596 | ret = ib_destroy_cq(sport->ibcq_aqp1); | |
597 | if (ret) | |
e3722192 | 598 | ehca_gen_err("Cannot destroy AQP1 CQ. ret=%i", ret); |
fab97220 HS |
599 | |
600 | return ret; | |
601 | } | |
602 | ||
603 | static ssize_t ehca_show_debug_level(struct device_driver *ddp, char *buf) | |
604 | { | |
4da27d6d | 605 | return snprintf(buf, PAGE_SIZE, "%d\n", ehca_debug_level); |
fab97220 HS |
606 | } |
607 | ||
608 | static ssize_t ehca_store_debug_level(struct device_driver *ddp, | |
609 | const char *buf, size_t count) | |
610 | { | |
611 | int value = (*buf) - '0'; | |
612 | if (value >= 0 && value <= 9) | |
613 | ehca_debug_level = value; | |
614 | return 1; | |
615 | } | |
616 | ||
e8e91f6b RD |
617 | static DRIVER_ATTR(debug_level, S_IRUSR | S_IWUSR, |
618 | ehca_show_debug_level, ehca_store_debug_level); | |
fab97220 | 619 | |
bba9b601 JF |
620 | static struct attribute *ehca_drv_attrs[] = { |
621 | &driver_attr_debug_level.attr, | |
622 | NULL | |
623 | }; | |
fab97220 | 624 | |
bba9b601 JF |
625 | static struct attribute_group ehca_drv_attr_grp = { |
626 | .attrs = ehca_drv_attrs | |
627 | }; | |
fab97220 | 628 | |
a4dbd674 | 629 | static const struct attribute_group *ehca_drv_attr_groups[] = { |
23b9c1ab GKH |
630 | &ehca_drv_attr_grp, |
631 | NULL, | |
632 | }; | |
633 | ||
fab97220 HS |
634 | #define EHCA_RESOURCE_ATTR(name) \ |
635 | static ssize_t ehca_show_##name(struct device *dev, \ | |
636 | struct device_attribute *attr, \ | |
637 | char *buf) \ | |
638 | { \ | |
639 | struct ehca_shca *shca; \ | |
640 | struct hipz_query_hca *rblock; \ | |
641 | int data; \ | |
642 | \ | |
f899c2dd | 643 | shca = dev_get_drvdata(dev); \ |
fab97220 | 644 | \ |
f2d91361 | 645 | rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); \ |
fab97220 | 646 | if (!rblock) { \ |
898eb71c | 647 | dev_err(dev, "Can't allocate rblock memory.\n"); \ |
fab97220 HS |
648 | return 0; \ |
649 | } \ | |
650 | \ | |
651 | if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) { \ | |
898eb71c | 652 | dev_err(dev, "Can't query device properties\n"); \ |
7e28db5d | 653 | ehca_free_fw_ctrlblock(rblock); \ |
fab97220 HS |
654 | return 0; \ |
655 | } \ | |
656 | \ | |
657 | data = rblock->name; \ | |
7e28db5d | 658 | ehca_free_fw_ctrlblock(rblock); \ |
fab97220 HS |
659 | \ |
660 | if ((strcmp(#name, "num_ports") == 0) && (ehca_nr_ports == 1)) \ | |
661 | return snprintf(buf, 256, "1\n"); \ | |
662 | else \ | |
663 | return snprintf(buf, 256, "%d\n", data); \ | |
664 | \ | |
665 | } \ | |
666 | static DEVICE_ATTR(name, S_IRUGO, ehca_show_##name, NULL); | |
667 | ||
668 | EHCA_RESOURCE_ATTR(num_ports); | |
669 | EHCA_RESOURCE_ATTR(hw_ver); | |
670 | EHCA_RESOURCE_ATTR(max_eq); | |
671 | EHCA_RESOURCE_ATTR(cur_eq); | |
672 | EHCA_RESOURCE_ATTR(max_cq); | |
673 | EHCA_RESOURCE_ATTR(cur_cq); | |
674 | EHCA_RESOURCE_ATTR(max_qp); | |
675 | EHCA_RESOURCE_ATTR(cur_qp); | |
676 | EHCA_RESOURCE_ATTR(max_mr); | |
677 | EHCA_RESOURCE_ATTR(cur_mr); | |
678 | EHCA_RESOURCE_ATTR(max_mw); | |
679 | EHCA_RESOURCE_ATTR(cur_mw); | |
680 | EHCA_RESOURCE_ATTR(max_pd); | |
681 | EHCA_RESOURCE_ATTR(max_ah); | |
682 | ||
683 | static ssize_t ehca_show_adapter_handle(struct device *dev, | |
684 | struct device_attribute *attr, | |
685 | char *buf) | |
686 | { | |
f899c2dd | 687 | struct ehca_shca *shca = dev_get_drvdata(dev); |
fab97220 | 688 | |
3750f605 | 689 | return sprintf(buf, "%llx\n", shca->ipz_hca_handle.handle); |
fab97220 HS |
690 | |
691 | } | |
692 | static DEVICE_ATTR(adapter_handle, S_IRUGO, ehca_show_adapter_handle, NULL); | |
693 | ||
bba9b601 JF |
694 | static struct attribute *ehca_dev_attrs[] = { |
695 | &dev_attr_adapter_handle.attr, | |
696 | &dev_attr_num_ports.attr, | |
697 | &dev_attr_hw_ver.attr, | |
698 | &dev_attr_max_eq.attr, | |
699 | &dev_attr_cur_eq.attr, | |
700 | &dev_attr_max_cq.attr, | |
701 | &dev_attr_cur_cq.attr, | |
702 | &dev_attr_max_qp.attr, | |
703 | &dev_attr_cur_qp.attr, | |
704 | &dev_attr_max_mr.attr, | |
705 | &dev_attr_cur_mr.attr, | |
706 | &dev_attr_max_mw.attr, | |
707 | &dev_attr_cur_mw.attr, | |
708 | &dev_attr_max_pd.attr, | |
709 | &dev_attr_max_ah.attr, | |
710 | NULL | |
711 | }; | |
fab97220 | 712 | |
bba9b601 JF |
713 | static struct attribute_group ehca_dev_attr_grp = { |
714 | .attrs = ehca_dev_attrs | |
715 | }; | |
fab97220 | 716 | |
c45640e4 | 717 | static int ehca_probe(struct platform_device *dev) |
fab97220 HS |
718 | { |
719 | struct ehca_shca *shca; | |
a7edd0e6 | 720 | const u64 *handle; |
fab97220 | 721 | struct ib_pd *ibpd; |
d227fa72 | 722 | int ret, i, eq_size; |
75c21ae9 | 723 | unsigned long flags; |
fab97220 | 724 | |
61c7a080 | 725 | handle = of_get_property(dev->dev.of_node, "ibm,hca-handle", NULL); |
fab97220 HS |
726 | if (!handle) { |
727 | ehca_gen_err("Cannot get eHCA handle for adapter: %s.", | |
61c7a080 | 728 | dev->dev.of_node->full_name); |
fab97220 HS |
729 | return -ENODEV; |
730 | } | |
731 | ||
732 | if (!(*handle)) { | |
733 | ehca_gen_err("Wrong eHCA handle for adapter: %s.", | |
61c7a080 | 734 | dev->dev.of_node->full_name); |
fab97220 HS |
735 | return -ENODEV; |
736 | } | |
737 | ||
738 | shca = (struct ehca_shca *)ib_alloc_device(sizeof(*shca)); | |
739 | if (!shca) { | |
740 | ehca_gen_err("Cannot allocate shca memory."); | |
741 | return -ENOMEM; | |
742 | } | |
19f42821 | 743 | |
c4ed790d | 744 | mutex_init(&shca->modify_mutex); |
d227fa72 SR |
745 | atomic_set(&shca->num_cqs, 0); |
746 | atomic_set(&shca->num_qps, 0); | |
19f42821 SR |
747 | shca->max_num_qps = ehca_max_qp; |
748 | shca->max_num_cqs = ehca_max_cq; | |
749 | ||
bbdd267e HNN |
750 | for (i = 0; i < ARRAY_SIZE(shca->sport); i++) |
751 | spin_lock_init(&shca->sport[i].mod_sqp_lock); | |
fab97220 | 752 | |
6b08f3ae | 753 | shca->ofdev = dev; |
fab97220 | 754 | shca->ipz_hca_handle.handle = *handle; |
f899c2dd | 755 | dev_set_drvdata(&dev->dev, shca); |
fab97220 HS |
756 | |
757 | ret = ehca_sense_attributes(shca); | |
758 | if (ret < 0) { | |
759 | ehca_gen_err("Cannot sense eHCA attributes."); | |
760 | goto probe1; | |
761 | } | |
762 | ||
0f248d9c | 763 | ret = ehca_init_device(shca); |
fab97220 | 764 | if (ret) { |
0f248d9c | 765 | ehca_gen_err("Cannot init ehca device struct"); |
fab97220 HS |
766 | goto probe1; |
767 | } | |
768 | ||
19f42821 | 769 | eq_size = 2 * shca->max_num_cqs + 4 * shca->max_num_qps; |
fab97220 | 770 | /* create event queues */ |
d227fa72 | 771 | ret = ehca_create_eq(shca, &shca->eq, EHCA_EQ, eq_size); |
fab97220 HS |
772 | if (ret) { |
773 | ehca_err(&shca->ib_device, "Cannot create EQ."); | |
0f248d9c | 774 | goto probe1; |
fab97220 HS |
775 | } |
776 | ||
777 | ret = ehca_create_eq(shca, &shca->neq, EHCA_NEQ, 513); | |
778 | if (ret) { | |
779 | ehca_err(&shca->ib_device, "Cannot create NEQ."); | |
780 | goto probe3; | |
781 | } | |
782 | ||
783 | /* create internal protection domain */ | |
2b94397a | 784 | ibpd = ehca_alloc_pd(&shca->ib_device, (void *)(-1), NULL); |
fab97220 HS |
785 | if (IS_ERR(ibpd)) { |
786 | ehca_err(&shca->ib_device, "Cannot create internal PD."); | |
787 | ret = PTR_ERR(ibpd); | |
788 | goto probe4; | |
789 | } | |
790 | ||
791 | shca->pd = container_of(ibpd, struct ehca_pd, ib_pd); | |
792 | shca->pd->ib_pd.device = &shca->ib_device; | |
793 | ||
794 | /* create internal max MR */ | |
795 | ret = ehca_reg_internal_maxmr(shca, shca->pd, &shca->maxmr); | |
796 | ||
797 | if (ret) { | |
e3722192 | 798 | ehca_err(&shca->ib_device, "Cannot create internal MR ret=%i", |
fab97220 HS |
799 | ret); |
800 | goto probe5; | |
801 | } | |
802 | ||
9a6edb60 | 803 | ret = ib_register_device(&shca->ib_device, NULL); |
0f248d9c HNN |
804 | if (ret) { |
805 | ehca_err(&shca->ib_device, | |
e3722192 | 806 | "ib_register_device() failed ret=%i", ret); |
0f248d9c HNN |
807 | goto probe6; |
808 | } | |
809 | ||
fab97220 HS |
810 | /* create AQP1 for port 1 */ |
811 | if (ehca_open_aqp1 == 1) { | |
812 | shca->sport[0].port_state = IB_PORT_DOWN; | |
813 | ret = ehca_create_aqp1(shca, 1); | |
814 | if (ret) { | |
815 | ehca_err(&shca->ib_device, | |
816 | "Cannot create AQP1 for port 1."); | |
0f248d9c | 817 | goto probe7; |
fab97220 HS |
818 | } |
819 | } | |
820 | ||
821 | /* create AQP1 for port 2 */ | |
822 | if ((ehca_open_aqp1 == 1) && (shca->num_ports == 2)) { | |
823 | shca->sport[1].port_state = IB_PORT_DOWN; | |
824 | ret = ehca_create_aqp1(shca, 2); | |
825 | if (ret) { | |
826 | ehca_err(&shca->ib_device, | |
827 | "Cannot create AQP1 for port 2."); | |
0f248d9c | 828 | goto probe8; |
fab97220 HS |
829 | } |
830 | } | |
831 | ||
6b08f3ae | 832 | ret = sysfs_create_group(&dev->dev.kobj, &ehca_dev_attr_grp); |
bba9b601 JF |
833 | if (ret) /* only complain; we can live without attributes */ |
834 | ehca_err(&shca->ib_device, | |
835 | "Cannot create device attributes ret=%d", ret); | |
fab97220 | 836 | |
75c21ae9 | 837 | spin_lock_irqsave(&shca_list_lock, flags); |
fab97220 | 838 | list_add(&shca->shca_list, &shca_list); |
75c21ae9 | 839 | spin_unlock_irqrestore(&shca_list_lock, flags); |
fab97220 HS |
840 | |
841 | return 0; | |
842 | ||
0f248d9c | 843 | probe8: |
fab97220 HS |
844 | ret = ehca_destroy_aqp1(&shca->sport[0]); |
845 | if (ret) | |
846 | ehca_err(&shca->ib_device, | |
e3722192 | 847 | "Cannot destroy AQP1 for port 1. ret=%i", ret); |
fab97220 | 848 | |
0f248d9c HNN |
849 | probe7: |
850 | ib_unregister_device(&shca->ib_device); | |
851 | ||
fab97220 HS |
852 | probe6: |
853 | ret = ehca_dereg_internal_maxmr(shca); | |
854 | if (ret) | |
855 | ehca_err(&shca->ib_device, | |
856 | "Cannot destroy internal MR. ret=%x", ret); | |
857 | ||
858 | probe5: | |
859 | ret = ehca_dealloc_pd(&shca->pd->ib_pd); | |
860 | if (ret) | |
861 | ehca_err(&shca->ib_device, | |
862 | "Cannot destroy internal PD. ret=%x", ret); | |
863 | ||
864 | probe4: | |
865 | ret = ehca_destroy_eq(shca, &shca->neq); | |
866 | if (ret) | |
867 | ehca_err(&shca->ib_device, | |
868 | "Cannot destroy NEQ. ret=%x", ret); | |
869 | ||
870 | probe3: | |
871 | ret = ehca_destroy_eq(shca, &shca->eq); | |
872 | if (ret) | |
873 | ehca_err(&shca->ib_device, | |
874 | "Cannot destroy EQ. ret=%x", ret); | |
875 | ||
fab97220 HS |
876 | probe1: |
877 | ib_dealloc_device(&shca->ib_device); | |
878 | ||
879 | return -EINVAL; | |
880 | } | |
881 | ||
1e6d9abe | 882 | static int ehca_remove(struct platform_device *dev) |
fab97220 | 883 | { |
f899c2dd | 884 | struct ehca_shca *shca = dev_get_drvdata(&dev->dev); |
75c21ae9 | 885 | unsigned long flags; |
fab97220 HS |
886 | int ret; |
887 | ||
6b08f3ae | 888 | sysfs_remove_group(&dev->dev.kobj, &ehca_dev_attr_grp); |
fab97220 HS |
889 | |
890 | if (ehca_open_aqp1 == 1) { | |
891 | int i; | |
892 | for (i = 0; i < shca->num_ports; i++) { | |
893 | ret = ehca_destroy_aqp1(&shca->sport[i]); | |
894 | if (ret) | |
895 | ehca_err(&shca->ib_device, | |
896 | "Cannot destroy AQP1 for port %x " | |
e3722192 | 897 | "ret=%i", ret, i); |
fab97220 HS |
898 | } |
899 | } | |
900 | ||
901 | ib_unregister_device(&shca->ib_device); | |
902 | ||
903 | ret = ehca_dereg_internal_maxmr(shca); | |
904 | if (ret) | |
905 | ehca_err(&shca->ib_device, | |
e3722192 | 906 | "Cannot destroy internal MR. ret=%i", ret); |
fab97220 HS |
907 | |
908 | ret = ehca_dealloc_pd(&shca->pd->ib_pd); | |
909 | if (ret) | |
910 | ehca_err(&shca->ib_device, | |
e3722192 | 911 | "Cannot destroy internal PD. ret=%i", ret); |
fab97220 HS |
912 | |
913 | ret = ehca_destroy_eq(shca, &shca->eq); | |
914 | if (ret) | |
e3722192 | 915 | ehca_err(&shca->ib_device, "Cannot destroy EQ. ret=%i", ret); |
fab97220 HS |
916 | |
917 | ret = ehca_destroy_eq(shca, &shca->neq); | |
918 | if (ret) | |
e3722192 | 919 | ehca_err(&shca->ib_device, "Canot destroy NEQ. ret=%i", ret); |
fab97220 HS |
920 | |
921 | ib_dealloc_device(&shca->ib_device); | |
922 | ||
75c21ae9 | 923 | spin_lock_irqsave(&shca_list_lock, flags); |
fab97220 | 924 | list_del(&shca->shca_list); |
75c21ae9 | 925 | spin_unlock_irqrestore(&shca_list_lock, flags); |
fab97220 HS |
926 | |
927 | return ret; | |
928 | } | |
929 | ||
930 | static struct of_device_id ehca_device_table[] = | |
931 | { | |
932 | { | |
933 | .name = "lhca", | |
934 | .compatible = "IBM,lhca", | |
935 | }, | |
936 | {}, | |
937 | }; | |
038919f2 | 938 | MODULE_DEVICE_TABLE(of, ehca_device_table); |
fab97220 | 939 | |
c45640e4 | 940 | static struct platform_driver ehca_driver = { |
6b08f3ae JF |
941 | .probe = ehca_probe, |
942 | .remove = ehca_remove, | |
4018294b GL |
943 | .driver = { |
944 | .name = "ehca", | |
945 | .owner = THIS_MODULE, | |
23b9c1ab | 946 | .groups = ehca_drv_attr_groups, |
4018294b | 947 | .of_match_table = ehca_device_table, |
23b9c1ab | 948 | }, |
fab97220 HS |
949 | }; |
950 | ||
951 | void ehca_poll_eqs(unsigned long data) | |
952 | { | |
953 | struct ehca_shca *shca; | |
954 | ||
955 | spin_lock(&shca_list_lock); | |
956 | list_for_each_entry(shca, &shca_list, shca_list) { | |
78d8d5f9 HNN |
957 | if (shca->eq.is_initialized) { |
958 | /* call deadman proc only if eq ptr does not change */ | |
959 | struct ehca_eq *eq = &shca->eq; | |
960 | int max = 3; | |
961 | volatile u64 q_ofs, q_ofs2; | |
7ddccb23 | 962 | unsigned long flags; |
78d8d5f9 HNN |
963 | spin_lock_irqsave(&eq->spinlock, flags); |
964 | q_ofs = eq->ipz_queue.current_q_offset; | |
965 | spin_unlock_irqrestore(&eq->spinlock, flags); | |
966 | do { | |
967 | spin_lock_irqsave(&eq->spinlock, flags); | |
968 | q_ofs2 = eq->ipz_queue.current_q_offset; | |
969 | spin_unlock_irqrestore(&eq->spinlock, flags); | |
970 | max--; | |
971 | } while (q_ofs == q_ofs2 && max > 0); | |
972 | if (q_ofs == q_ofs2) | |
973 | ehca_process_eq(shca, 0); | |
974 | } | |
fab97220 | 975 | } |
1a7d2dce | 976 | mod_timer(&poll_eqs_timer, round_jiffies(jiffies + HZ)); |
fab97220 HS |
977 | spin_unlock(&shca_list_lock); |
978 | } | |
979 | ||
263c24a2 SR |
980 | static int ehca_mem_notifier(struct notifier_block *nb, |
981 | unsigned long action, void *data) | |
982 | { | |
983 | static unsigned long ehca_dmem_warn_time; | |
75c21ae9 | 984 | unsigned long flags; |
263c24a2 SR |
985 | |
986 | switch (action) { | |
987 | case MEM_CANCEL_OFFLINE: | |
988 | case MEM_CANCEL_ONLINE: | |
989 | case MEM_ONLINE: | |
990 | case MEM_OFFLINE: | |
991 | return NOTIFY_OK; | |
992 | case MEM_GOING_ONLINE: | |
993 | case MEM_GOING_OFFLINE: | |
994 | /* only ok if no hca is attached to the lpar */ | |
75c21ae9 | 995 | spin_lock_irqsave(&shca_list_lock, flags); |
263c24a2 | 996 | if (list_empty(&shca_list)) { |
75c21ae9 | 997 | spin_unlock_irqrestore(&shca_list_lock, flags); |
263c24a2 SR |
998 | return NOTIFY_OK; |
999 | } else { | |
75c21ae9 | 1000 | spin_unlock_irqrestore(&shca_list_lock, flags); |
263c24a2 SR |
1001 | if (printk_timed_ratelimit(&ehca_dmem_warn_time, |
1002 | 30 * 1000)) | |
1003 | ehca_gen_err("DMEM operations are not allowed" | |
6b1f9d64 | 1004 | "in conjunction with eHCA"); |
263c24a2 SR |
1005 | return NOTIFY_BAD; |
1006 | } | |
1007 | } | |
1008 | return NOTIFY_OK; | |
1009 | } | |
1010 | ||
1011 | static struct notifier_block ehca_mem_nb = { | |
1012 | .notifier_call = ehca_mem_notifier, | |
1013 | }; | |
1014 | ||
e8e91f6b | 1015 | static int __init ehca_module_init(void) |
fab97220 HS |
1016 | { |
1017 | int ret; | |
1018 | ||
1019 | printk(KERN_INFO "eHCA Infiniband Device Driver " | |
39089e77 | 1020 | "(Version " HCAD_VERSION ")\n"); |
fab97220 | 1021 | |
2b94397a HNN |
1022 | ret = ehca_create_comp_pool(); |
1023 | if (ret) { | |
fab97220 HS |
1024 | ehca_gen_err("Cannot create comp pool."); |
1025 | return ret; | |
1026 | } | |
1027 | ||
2b94397a HNN |
1028 | ret = ehca_create_slab_caches(); |
1029 | if (ret) { | |
fab97220 HS |
1030 | ehca_gen_err("Cannot create SLAB caches"); |
1031 | ret = -ENOMEM; | |
1032 | goto module_init1; | |
1033 | } | |
1034 | ||
0cf89dcd HH |
1035 | ret = ehca_create_busmap(); |
1036 | if (ret) { | |
1037 | ehca_gen_err("Cannot create busmap."); | |
1038 | goto module_init2; | |
1039 | } | |
1040 | ||
2b94397a HNN |
1041 | ret = ibmebus_register_driver(&ehca_driver); |
1042 | if (ret) { | |
fab97220 HS |
1043 | ehca_gen_err("Cannot register eHCA device driver"); |
1044 | ret = -EINVAL; | |
0cf89dcd | 1045 | goto module_init3; |
fab97220 HS |
1046 | } |
1047 | ||
263c24a2 SR |
1048 | ret = register_memory_notifier(&ehca_mem_nb); |
1049 | if (ret) { | |
1050 | ehca_gen_err("Failed registering memory add/remove notifier"); | |
0cf89dcd | 1051 | goto module_init4; |
263c24a2 SR |
1052 | } |
1053 | ||
fab97220 HS |
1054 | if (ehca_poll_all_eqs != 1) { |
1055 | ehca_gen_err("WARNING!!!"); | |
1056 | ehca_gen_err("It is possible to lose interrupts."); | |
1057 | } else { | |
1058 | init_timer(&poll_eqs_timer); | |
1059 | poll_eqs_timer.function = ehca_poll_eqs; | |
1060 | poll_eqs_timer.expires = jiffies + HZ; | |
1061 | add_timer(&poll_eqs_timer); | |
1062 | } | |
1063 | ||
1064 | return 0; | |
1065 | ||
0cf89dcd | 1066 | module_init4: |
263c24a2 SR |
1067 | ibmebus_unregister_driver(&ehca_driver); |
1068 | ||
0cf89dcd HH |
1069 | module_init3: |
1070 | ehca_destroy_busmap(); | |
1071 | ||
fab97220 HS |
1072 | module_init2: |
1073 | ehca_destroy_slab_caches(); | |
1074 | ||
1075 | module_init1: | |
1076 | ehca_destroy_comp_pool(); | |
1077 | return ret; | |
1078 | }; | |
1079 | ||
e8e91f6b | 1080 | static void __exit ehca_module_exit(void) |
fab97220 HS |
1081 | { |
1082 | if (ehca_poll_all_eqs == 1) | |
1083 | del_timer_sync(&poll_eqs_timer); | |
1084 | ||
fab97220 HS |
1085 | ibmebus_unregister_driver(&ehca_driver); |
1086 | ||
263c24a2 SR |
1087 | unregister_memory_notifier(&ehca_mem_nb); |
1088 | ||
0cf89dcd HH |
1089 | ehca_destroy_busmap(); |
1090 | ||
fab97220 HS |
1091 | ehca_destroy_slab_caches(); |
1092 | ||
1093 | ehca_destroy_comp_pool(); | |
1094 | ||
1095 | idr_destroy(&ehca_cq_idr); | |
1096 | idr_destroy(&ehca_qp_idr); | |
1097 | }; | |
1098 | ||
1099 | module_init(ehca_module_init); | |
1100 | module_exit(ehca_module_exit); |