2 * IBM eServer eHCA Infiniband device driver for Linux on POWER
4 * module start stop, hca detection
6 * Authors: Heiko J Schick <schickhj@de.ibm.com>
7 * Hoang-Nam Nguyen <hnguyen@de.ibm.com>
8 * Joachim Fenkes <fenkes@de.ibm.com>
10 * Copyright (c) 2005 IBM Corporation
12 * All rights reserved.
14 * This source code is distributed under a dual license of GPL v2.0 and OpenIB
19 * Redistribution and use in source and binary forms, with or without
20 * modification, are permitted provided that the following conditions are met:
22 * Redistributions of source code must retain the above copyright notice, this
23 * list of conditions and the following disclaimer.
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.
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.
43 #ifdef CONFIG_PPC_64K_PAGES
44 #include <linux/slab.h>
47 #include <linux/notifier.h>
48 #include <linux/memory.h>
49 #include <rdma/ib_mad.h>
50 #include "ehca_classes.h"
51 #include "ehca_iverbs.h"
52 #include "ehca_mrmw.h"
53 #include "ehca_tools.h"
56 #define HCAD_VERSION "0029"
58 MODULE_LICENSE("Dual BSD/GPL");
59 MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
60 MODULE_DESCRIPTION("IBM eServer HCA InfiniBand Device Driver");
61 MODULE_VERSION(HCAD_VERSION);
63 static bool ehca_open_aqp1 = 0;
64 static int ehca_hw_level = 0;
65 static bool ehca_poll_all_eqs = 1;
67 int ehca_debug_level = 0;
68 int ehca_nr_ports = -1;
69 bool ehca_use_hp_mr = 0;
70 int ehca_port_act_time = 30;
71 int ehca_static_rate = -1;
72 bool ehca_scaling_code = 0;
73 int ehca_lock_hcalls = -1;
77 module_param_named(open_aqp1, ehca_open_aqp1, bool, S_IRUGO);
78 module_param_named(debug_level, ehca_debug_level, int, S_IRUGO);
79 module_param_named(hw_level, ehca_hw_level, int, S_IRUGO);
80 module_param_named(nr_ports, ehca_nr_ports, int, S_IRUGO);
81 module_param_named(use_hp_mr, ehca_use_hp_mr, bool, S_IRUGO);
82 module_param_named(port_act_time, ehca_port_act_time, int, S_IRUGO);
83 module_param_named(poll_all_eqs, ehca_poll_all_eqs, bool, S_IRUGO);
84 module_param_named(static_rate, ehca_static_rate, int, S_IRUGO);
85 module_param_named(scaling_code, ehca_scaling_code, bool, S_IRUGO);
86 module_param_named(lock_hcalls, ehca_lock_hcalls, bint, S_IRUGO);
87 module_param_named(number_of_cqs, ehca_max_cq, int, S_IRUGO);
88 module_param_named(number_of_qps, ehca_max_qp, int, S_IRUGO);
90 MODULE_PARM_DESC(open_aqp1,
91 "Open AQP1 on startup (default: no)");
92 MODULE_PARM_DESC(debug_level,
93 "Amount of debug output (0: none (default), 1: traces, "
94 "2: some dumps, 3: lots)");
95 MODULE_PARM_DESC(hw_level,
96 "Hardware level (0: autosensing (default), "
97 "0x10..0x14: eHCA, 0x20..0x23: eHCA2)");
98 MODULE_PARM_DESC(nr_ports,
99 "number of connected ports (-1: autodetect (default), "
100 "1: port one only, 2: two ports)");
101 MODULE_PARM_DESC(use_hp_mr,
102 "Use high performance MRs (default: no)");
103 MODULE_PARM_DESC(port_act_time,
104 "Time to wait for port activation (default: 30 sec)");
105 MODULE_PARM_DESC(poll_all_eqs,
106 "Poll all event queues periodically (default: yes)");
107 MODULE_PARM_DESC(static_rate,
108 "Set permanent static rate (default: no static rate)");
109 MODULE_PARM_DESC(scaling_code,
110 "Enable scaling code (default: no)");
111 MODULE_PARM_DESC(lock_hcalls,
112 "Serialize all hCalls made by the driver "
113 "(default: autodetect)");
114 MODULE_PARM_DESC(number_of_cqs,
115 "Max number of CQs which can be allocated "
116 "(default: autodetect)");
117 MODULE_PARM_DESC(number_of_qps,
118 "Max number of QPs which can be allocated "
119 "(default: autodetect)");
121 DEFINE_RWLOCK(ehca_qp_idr_lock);
122 DEFINE_RWLOCK(ehca_cq_idr_lock);
123 DEFINE_IDR(ehca_qp_idr);
124 DEFINE_IDR(ehca_cq_idr);
126 static LIST_HEAD(shca_list); /* list of all registered ehcas */
127 DEFINE_SPINLOCK(shca_list_lock);
129 static struct timer_list poll_eqs_timer;
131 #ifdef CONFIG_PPC_64K_PAGES
132 static struct kmem_cache *ctblk_cache;
134 void *ehca_alloc_fw_ctrlblock(gfp_t flags)
136 void *ret = kmem_cache_zalloc(ctblk_cache, flags);
138 ehca_gen_err("Out of memory for ctblk");
142 void ehca_free_fw_ctrlblock(void *ptr)
145 kmem_cache_free(ctblk_cache, ptr);
150 int ehca2ib_return_code(u64 ehca_rc)
155 case H_RESOURCE: /* Resource in use */
158 case H_NOT_ENOUGH_RESOURCES: /* insufficient resources */
159 case H_CONSTRAINED: /* resource constraint */
167 static int ehca_create_slab_caches(void)
171 ret = ehca_init_pd_cache();
173 ehca_gen_err("Cannot create PD SLAB cache.");
177 ret = ehca_init_cq_cache();
179 ehca_gen_err("Cannot create CQ SLAB cache.");
180 goto create_slab_caches2;
183 ret = ehca_init_qp_cache();
185 ehca_gen_err("Cannot create QP SLAB cache.");
186 goto create_slab_caches3;
189 ret = ehca_init_av_cache();
191 ehca_gen_err("Cannot create AV SLAB cache.");
192 goto create_slab_caches4;
195 ret = ehca_init_mrmw_cache();
197 ehca_gen_err("Cannot create MR&MW SLAB cache.");
198 goto create_slab_caches5;
201 ret = ehca_init_small_qp_cache();
203 ehca_gen_err("Cannot create small queue SLAB cache.");
204 goto create_slab_caches6;
207 #ifdef CONFIG_PPC_64K_PAGES
208 ctblk_cache = kmem_cache_create("ehca_cache_ctblk",
209 EHCA_PAGESIZE, H_CB_ALIGNMENT,
213 ehca_gen_err("Cannot create ctblk SLAB cache.");
214 ehca_cleanup_small_qp_cache();
216 goto create_slab_caches6;
222 ehca_cleanup_mrmw_cache();
225 ehca_cleanup_av_cache();
228 ehca_cleanup_qp_cache();
231 ehca_cleanup_cq_cache();
234 ehca_cleanup_pd_cache();
239 static void ehca_destroy_slab_caches(void)
241 ehca_cleanup_small_qp_cache();
242 ehca_cleanup_mrmw_cache();
243 ehca_cleanup_av_cache();
244 ehca_cleanup_qp_cache();
245 ehca_cleanup_cq_cache();
246 ehca_cleanup_pd_cache();
247 #ifdef CONFIG_PPC_64K_PAGES
248 kmem_cache_destroy(ctblk_cache);
252 #define EHCA_HCAAVER EHCA_BMASK_IBM(32, 39)
253 #define EHCA_REVID EHCA_BMASK_IBM(40, 63)
255 static struct cap_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" },
276 { HCA_CAP_H_ALLOC_RES_SYNC, "HCA_CAP_H_ALLOC_RES_SYNC" },
279 static int ehca_sense_attributes(struct ehca_shca *shca)
283 struct hipz_query_hca *rblock;
284 struct hipz_query_port *port;
285 const char *loc_code;
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,
294 ehca_gen_dbg("Probing adapter %s...",
295 shca->ofdev->dev.of_node->full_name);
296 loc_code = of_get_property(shca->ofdev->dev.of_node, "ibm,loc-code",
299 ehca_gen_dbg(" ... location lode=%s", loc_code);
301 rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
303 ehca_gen_err("Cannot allocate rblock memory.");
307 h_ret = hipz_h_query_hca(shca->ipz_hca_handle, rblock);
308 if (h_ret != H_SUCCESS) {
309 ehca_gen_err("Cannot query device properties. h_ret=%lli",
312 goto sense_attributes1;
315 if (ehca_nr_ports == 1)
318 shca->num_ports = (u8)rblock->num_ports;
320 ehca_gen_dbg(" ... found %x ports", rblock->num_ports);
322 if (ehca_hw_level == 0) {
326 hcaaver = EHCA_BMASK_GET(EHCA_HCAAVER, rblock->hw_ver);
327 revid = EHCA_BMASK_GET(EHCA_REVID, rblock->hw_ver);
329 ehca_gen_dbg(" ... hardware version=%x:%x", hcaaver, revid);
333 shca->hw_level = 0x10 | (revid + 1);
335 shca->hw_level = 0x14;
336 } else if (hcaaver == 2) {
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;
345 if (!shca->hw_level) {
346 ehca_gen_warn("unknown hardware version"
347 " - assuming default level");
348 shca->hw_level = 0x22;
351 shca->hw_level = ehca_hw_level;
352 ehca_gen_dbg(" ... hardware level=%x", shca->hw_level);
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);
360 /* Autodetect hCall locking -- the "H_ALLOC_RESOURCE synced" flag is
361 * a firmware property, so it's valid across all adapters
363 if (ehca_lock_hcalls == -1)
364 ehca_lock_hcalls = !EHCA_BMASK_GET(HCA_CAP_H_ALLOC_RES_SYNC,
367 /* translate supported MR page sizes; always support 4K */
368 shca->hca_cap_mr_pgsize = EHCA_PAGESIZE;
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];
373 /* Set maximum number of CQs and QPs to calculate EQ size */
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;
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);
393 /* query max MTU from first port -- it's the same for all ports */
394 port = (struct hipz_query_port *)rblock;
395 h_ret = hipz_h_query_port(shca->ipz_hca_handle, 1, port);
396 if (h_ret != H_SUCCESS) {
397 ehca_gen_err("Cannot query port properties. h_ret=%lli",
400 goto sense_attributes1;
403 shca->max_mtu = port->max_mtu;
406 ehca_free_fw_ctrlblock(rblock);
410 static int init_node_guid(struct ehca_shca *shca)
413 struct hipz_query_hca *rblock;
415 rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
417 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
421 if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) {
422 ehca_err(&shca->ib_device, "Can't query device properties");
424 goto init_node_guid1;
427 memcpy(&shca->ib_device.node_guid, &rblock->node_guid, sizeof(u64));
430 ehca_free_fw_ctrlblock(rblock);
434 static int ehca_port_immutable(struct ib_device *ibdev, u8 port_num,
435 struct ib_port_immutable *immutable)
437 struct ib_port_attr attr;
440 err = ehca_query_port(ibdev, port_num, &attr);
444 immutable->pkey_tbl_len = attr.pkey_tbl_len;
445 immutable->gid_tbl_len = attr.gid_tbl_len;
446 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
447 immutable->max_mad_size = IB_MGMT_MAD_SIZE;
452 static int ehca_init_device(struct ehca_shca *shca)
456 ret = init_node_guid(shca);
460 strlcpy(shca->ib_device.name, "ehca%d", IB_DEVICE_NAME_MAX);
461 shca->ib_device.owner = THIS_MODULE;
463 shca->ib_device.uverbs_abi_ver = 8;
464 shca->ib_device.uverbs_cmd_mask =
465 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
466 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
467 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
468 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
469 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
470 (1ull << IB_USER_VERBS_CMD_REG_MR) |
471 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
472 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
473 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
474 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
475 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
476 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
477 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
478 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
479 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
480 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST);
482 shca->ib_device.node_type = RDMA_NODE_IB_CA;
483 shca->ib_device.phys_port_cnt = shca->num_ports;
484 shca->ib_device.num_comp_vectors = 1;
485 shca->ib_device.dma_device = &shca->ofdev->dev;
486 shca->ib_device.query_device = ehca_query_device;
487 shca->ib_device.query_port = ehca_query_port;
488 shca->ib_device.query_gid = ehca_query_gid;
489 shca->ib_device.query_pkey = ehca_query_pkey;
490 /* shca->in_device.modify_device = ehca_modify_device */
491 shca->ib_device.modify_port = ehca_modify_port;
492 shca->ib_device.alloc_ucontext = ehca_alloc_ucontext;
493 shca->ib_device.dealloc_ucontext = ehca_dealloc_ucontext;
494 shca->ib_device.alloc_pd = ehca_alloc_pd;
495 shca->ib_device.dealloc_pd = ehca_dealloc_pd;
496 shca->ib_device.create_ah = ehca_create_ah;
497 /* shca->ib_device.modify_ah = ehca_modify_ah; */
498 shca->ib_device.query_ah = ehca_query_ah;
499 shca->ib_device.destroy_ah = ehca_destroy_ah;
500 shca->ib_device.create_qp = ehca_create_qp;
501 shca->ib_device.modify_qp = ehca_modify_qp;
502 shca->ib_device.query_qp = ehca_query_qp;
503 shca->ib_device.destroy_qp = ehca_destroy_qp;
504 shca->ib_device.post_send = ehca_post_send;
505 shca->ib_device.post_recv = ehca_post_recv;
506 shca->ib_device.create_cq = ehca_create_cq;
507 shca->ib_device.destroy_cq = ehca_destroy_cq;
508 shca->ib_device.resize_cq = ehca_resize_cq;
509 shca->ib_device.poll_cq = ehca_poll_cq;
510 /* shca->ib_device.peek_cq = ehca_peek_cq; */
511 shca->ib_device.req_notify_cq = ehca_req_notify_cq;
512 /* shca->ib_device.req_ncomp_notif = ehca_req_ncomp_notif; */
513 shca->ib_device.get_dma_mr = ehca_get_dma_mr;
514 shca->ib_device.reg_phys_mr = ehca_reg_phys_mr;
515 shca->ib_device.reg_user_mr = ehca_reg_user_mr;
516 shca->ib_device.query_mr = ehca_query_mr;
517 shca->ib_device.dereg_mr = ehca_dereg_mr;
518 shca->ib_device.rereg_phys_mr = ehca_rereg_phys_mr;
519 shca->ib_device.alloc_mw = ehca_alloc_mw;
520 shca->ib_device.bind_mw = ehca_bind_mw;
521 shca->ib_device.dealloc_mw = ehca_dealloc_mw;
522 shca->ib_device.alloc_fmr = ehca_alloc_fmr;
523 shca->ib_device.map_phys_fmr = ehca_map_phys_fmr;
524 shca->ib_device.unmap_fmr = ehca_unmap_fmr;
525 shca->ib_device.dealloc_fmr = ehca_dealloc_fmr;
526 shca->ib_device.attach_mcast = ehca_attach_mcast;
527 shca->ib_device.detach_mcast = ehca_detach_mcast;
528 shca->ib_device.process_mad = ehca_process_mad;
529 shca->ib_device.mmap = ehca_mmap;
530 shca->ib_device.dma_ops = &ehca_dma_mapping_ops;
531 shca->ib_device.get_port_immutable = ehca_port_immutable;
533 if (EHCA_BMASK_GET(HCA_CAP_SRQ, shca->hca_cap)) {
534 shca->ib_device.uverbs_cmd_mask |=
535 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
536 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
537 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
538 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
540 shca->ib_device.create_srq = ehca_create_srq;
541 shca->ib_device.modify_srq = ehca_modify_srq;
542 shca->ib_device.query_srq = ehca_query_srq;
543 shca->ib_device.destroy_srq = ehca_destroy_srq;
544 shca->ib_device.post_srq_recv = ehca_post_srq_recv;
550 static int ehca_create_aqp1(struct ehca_shca *shca, u32 port)
552 struct ehca_sport *sport = &shca->sport[port - 1];
555 struct ib_qp_init_attr qp_init_attr;
556 struct ib_cq_init_attr cq_attr = {};
559 if (sport->ibcq_aqp1) {
560 ehca_err(&shca->ib_device, "AQP1 CQ is already created.");
565 ibcq = ib_create_cq(&shca->ib_device, NULL, NULL, (void *)(-1),
568 ehca_err(&shca->ib_device, "Cannot create AQP1 CQ.");
569 return PTR_ERR(ibcq);
571 sport->ibcq_aqp1 = ibcq;
573 if (sport->ibqp_sqp[IB_QPT_GSI]) {
574 ehca_err(&shca->ib_device, "AQP1 QP is already created.");
579 memset(&qp_init_attr, 0, sizeof(struct ib_qp_init_attr));
580 qp_init_attr.send_cq = ibcq;
581 qp_init_attr.recv_cq = ibcq;
582 qp_init_attr.sq_sig_type = IB_SIGNAL_ALL_WR;
583 qp_init_attr.cap.max_send_wr = 100;
584 qp_init_attr.cap.max_recv_wr = 100;
585 qp_init_attr.cap.max_send_sge = 2;
586 qp_init_attr.cap.max_recv_sge = 1;
587 qp_init_attr.qp_type = IB_QPT_GSI;
588 qp_init_attr.port_num = port;
589 qp_init_attr.qp_context = NULL;
590 qp_init_attr.event_handler = NULL;
591 qp_init_attr.srq = NULL;
593 ibqp = ib_create_qp(&shca->pd->ib_pd, &qp_init_attr);
595 ehca_err(&shca->ib_device, "Cannot create AQP1 QP.");
599 sport->ibqp_sqp[IB_QPT_GSI] = ibqp;
604 ib_destroy_cq(sport->ibcq_aqp1);
608 static int ehca_destroy_aqp1(struct ehca_sport *sport)
612 ret = ib_destroy_qp(sport->ibqp_sqp[IB_QPT_GSI]);
614 ehca_gen_err("Cannot destroy AQP1 QP. ret=%i", ret);
618 ret = ib_destroy_cq(sport->ibcq_aqp1);
620 ehca_gen_err("Cannot destroy AQP1 CQ. ret=%i", ret);
625 static ssize_t ehca_show_debug_level(struct device_driver *ddp, char *buf)
627 return snprintf(buf, PAGE_SIZE, "%d\n", ehca_debug_level);
630 static ssize_t ehca_store_debug_level(struct device_driver *ddp,
631 const char *buf, size_t count)
633 int value = (*buf) - '0';
634 if (value >= 0 && value <= 9)
635 ehca_debug_level = value;
639 static DRIVER_ATTR(debug_level, S_IRUSR | S_IWUSR,
640 ehca_show_debug_level, ehca_store_debug_level);
642 static struct attribute *ehca_drv_attrs[] = {
643 &driver_attr_debug_level.attr,
647 static struct attribute_group ehca_drv_attr_grp = {
648 .attrs = ehca_drv_attrs
651 static const struct attribute_group *ehca_drv_attr_groups[] = {
656 #define EHCA_RESOURCE_ATTR(name) \
657 static ssize_t ehca_show_##name(struct device *dev, \
658 struct device_attribute *attr, \
661 struct ehca_shca *shca; \
662 struct hipz_query_hca *rblock; \
665 shca = dev_get_drvdata(dev); \
667 rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); \
669 dev_err(dev, "Can't allocate rblock memory.\n"); \
673 if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) { \
674 dev_err(dev, "Can't query device properties\n"); \
675 ehca_free_fw_ctrlblock(rblock); \
679 data = rblock->name; \
680 ehca_free_fw_ctrlblock(rblock); \
682 if ((strcmp(#name, "num_ports") == 0) && (ehca_nr_ports == 1)) \
683 return snprintf(buf, 256, "1\n"); \
685 return snprintf(buf, 256, "%d\n", data); \
688 static DEVICE_ATTR(name, S_IRUGO, ehca_show_##name, NULL);
690 EHCA_RESOURCE_ATTR(num_ports);
691 EHCA_RESOURCE_ATTR(hw_ver);
692 EHCA_RESOURCE_ATTR(max_eq);
693 EHCA_RESOURCE_ATTR(cur_eq);
694 EHCA_RESOURCE_ATTR(max_cq);
695 EHCA_RESOURCE_ATTR(cur_cq);
696 EHCA_RESOURCE_ATTR(max_qp);
697 EHCA_RESOURCE_ATTR(cur_qp);
698 EHCA_RESOURCE_ATTR(max_mr);
699 EHCA_RESOURCE_ATTR(cur_mr);
700 EHCA_RESOURCE_ATTR(max_mw);
701 EHCA_RESOURCE_ATTR(cur_mw);
702 EHCA_RESOURCE_ATTR(max_pd);
703 EHCA_RESOURCE_ATTR(max_ah);
705 static ssize_t ehca_show_adapter_handle(struct device *dev,
706 struct device_attribute *attr,
709 struct ehca_shca *shca = dev_get_drvdata(dev);
711 return sprintf(buf, "%llx\n", shca->ipz_hca_handle.handle);
714 static DEVICE_ATTR(adapter_handle, S_IRUGO, ehca_show_adapter_handle, NULL);
716 static struct attribute *ehca_dev_attrs[] = {
717 &dev_attr_adapter_handle.attr,
718 &dev_attr_num_ports.attr,
719 &dev_attr_hw_ver.attr,
720 &dev_attr_max_eq.attr,
721 &dev_attr_cur_eq.attr,
722 &dev_attr_max_cq.attr,
723 &dev_attr_cur_cq.attr,
724 &dev_attr_max_qp.attr,
725 &dev_attr_cur_qp.attr,
726 &dev_attr_max_mr.attr,
727 &dev_attr_cur_mr.attr,
728 &dev_attr_max_mw.attr,
729 &dev_attr_cur_mw.attr,
730 &dev_attr_max_pd.attr,
731 &dev_attr_max_ah.attr,
735 static struct attribute_group ehca_dev_attr_grp = {
736 .attrs = ehca_dev_attrs
739 static int ehca_probe(struct platform_device *dev)
741 struct ehca_shca *shca;
747 handle = of_get_property(dev->dev.of_node, "ibm,hca-handle", NULL);
749 ehca_gen_err("Cannot get eHCA handle for adapter: %s.",
750 dev->dev.of_node->full_name);
755 ehca_gen_err("Wrong eHCA handle for adapter: %s.",
756 dev->dev.of_node->full_name);
760 shca = (struct ehca_shca *)ib_alloc_device(sizeof(*shca));
762 ehca_gen_err("Cannot allocate shca memory.");
766 mutex_init(&shca->modify_mutex);
767 atomic_set(&shca->num_cqs, 0);
768 atomic_set(&shca->num_qps, 0);
769 shca->max_num_qps = ehca_max_qp;
770 shca->max_num_cqs = ehca_max_cq;
772 for (i = 0; i < ARRAY_SIZE(shca->sport); i++)
773 spin_lock_init(&shca->sport[i].mod_sqp_lock);
776 shca->ipz_hca_handle.handle = *handle;
777 dev_set_drvdata(&dev->dev, shca);
779 ret = ehca_sense_attributes(shca);
781 ehca_gen_err("Cannot sense eHCA attributes.");
785 ret = ehca_init_device(shca);
787 ehca_gen_err("Cannot init ehca device struct");
791 eq_size = 2 * shca->max_num_cqs + 4 * shca->max_num_qps;
792 /* create event queues */
793 ret = ehca_create_eq(shca, &shca->eq, EHCA_EQ, eq_size);
795 ehca_err(&shca->ib_device, "Cannot create EQ.");
799 ret = ehca_create_eq(shca, &shca->neq, EHCA_NEQ, 513);
801 ehca_err(&shca->ib_device, "Cannot create NEQ.");
805 /* create internal protection domain */
806 ibpd = ehca_alloc_pd(&shca->ib_device, (void *)(-1), NULL);
808 ehca_err(&shca->ib_device, "Cannot create internal PD.");
813 shca->pd = container_of(ibpd, struct ehca_pd, ib_pd);
814 shca->pd->ib_pd.device = &shca->ib_device;
816 /* create internal max MR */
817 ret = ehca_reg_internal_maxmr(shca, shca->pd, &shca->maxmr);
820 ehca_err(&shca->ib_device, "Cannot create internal MR ret=%i",
825 ret = ib_register_device(&shca->ib_device, NULL);
827 ehca_err(&shca->ib_device,
828 "ib_register_device() failed ret=%i", ret);
832 /* create AQP1 for port 1 */
833 if (ehca_open_aqp1 == 1) {
834 shca->sport[0].port_state = IB_PORT_DOWN;
835 ret = ehca_create_aqp1(shca, 1);
837 ehca_err(&shca->ib_device,
838 "Cannot create AQP1 for port 1.");
843 /* create AQP1 for port 2 */
844 if ((ehca_open_aqp1 == 1) && (shca->num_ports == 2)) {
845 shca->sport[1].port_state = IB_PORT_DOWN;
846 ret = ehca_create_aqp1(shca, 2);
848 ehca_err(&shca->ib_device,
849 "Cannot create AQP1 for port 2.");
854 ret = sysfs_create_group(&dev->dev.kobj, &ehca_dev_attr_grp);
855 if (ret) /* only complain; we can live without attributes */
856 ehca_err(&shca->ib_device,
857 "Cannot create device attributes ret=%d", ret);
859 spin_lock_irqsave(&shca_list_lock, flags);
860 list_add(&shca->shca_list, &shca_list);
861 spin_unlock_irqrestore(&shca_list_lock, flags);
866 ret = ehca_destroy_aqp1(&shca->sport[0]);
868 ehca_err(&shca->ib_device,
869 "Cannot destroy AQP1 for port 1. ret=%i", ret);
872 ib_unregister_device(&shca->ib_device);
875 ret = ehca_dereg_internal_maxmr(shca);
877 ehca_err(&shca->ib_device,
878 "Cannot destroy internal MR. ret=%x", ret);
881 ret = ehca_dealloc_pd(&shca->pd->ib_pd);
883 ehca_err(&shca->ib_device,
884 "Cannot destroy internal PD. ret=%x", ret);
887 ret = ehca_destroy_eq(shca, &shca->neq);
889 ehca_err(&shca->ib_device,
890 "Cannot destroy NEQ. ret=%x", ret);
893 ret = ehca_destroy_eq(shca, &shca->eq);
895 ehca_err(&shca->ib_device,
896 "Cannot destroy EQ. ret=%x", ret);
899 ib_dealloc_device(&shca->ib_device);
904 static int ehca_remove(struct platform_device *dev)
906 struct ehca_shca *shca = dev_get_drvdata(&dev->dev);
910 sysfs_remove_group(&dev->dev.kobj, &ehca_dev_attr_grp);
912 if (ehca_open_aqp1 == 1) {
914 for (i = 0; i < shca->num_ports; i++) {
915 ret = ehca_destroy_aqp1(&shca->sport[i]);
917 ehca_err(&shca->ib_device,
918 "Cannot destroy AQP1 for port %x "
923 ib_unregister_device(&shca->ib_device);
925 ret = ehca_dereg_internal_maxmr(shca);
927 ehca_err(&shca->ib_device,
928 "Cannot destroy internal MR. ret=%i", ret);
930 ret = ehca_dealloc_pd(&shca->pd->ib_pd);
932 ehca_err(&shca->ib_device,
933 "Cannot destroy internal PD. ret=%i", ret);
935 ret = ehca_destroy_eq(shca, &shca->eq);
937 ehca_err(&shca->ib_device, "Cannot destroy EQ. ret=%i", ret);
939 ret = ehca_destroy_eq(shca, &shca->neq);
941 ehca_err(&shca->ib_device, "Canot destroy NEQ. ret=%i", ret);
943 ib_dealloc_device(&shca->ib_device);
945 spin_lock_irqsave(&shca_list_lock, flags);
946 list_del(&shca->shca_list);
947 spin_unlock_irqrestore(&shca_list_lock, flags);
952 static struct of_device_id ehca_device_table[] =
956 .compatible = "IBM,lhca",
960 MODULE_DEVICE_TABLE(of, ehca_device_table);
962 static struct platform_driver ehca_driver = {
964 .remove = ehca_remove,
967 .owner = THIS_MODULE,
968 .groups = ehca_drv_attr_groups,
969 .of_match_table = ehca_device_table,
973 void ehca_poll_eqs(unsigned long data)
975 struct ehca_shca *shca;
977 spin_lock(&shca_list_lock);
978 list_for_each_entry(shca, &shca_list, shca_list) {
979 if (shca->eq.is_initialized) {
980 /* call deadman proc only if eq ptr does not change */
981 struct ehca_eq *eq = &shca->eq;
983 volatile u64 q_ofs, q_ofs2;
985 spin_lock_irqsave(&eq->spinlock, flags);
986 q_ofs = eq->ipz_queue.current_q_offset;
987 spin_unlock_irqrestore(&eq->spinlock, flags);
989 spin_lock_irqsave(&eq->spinlock, flags);
990 q_ofs2 = eq->ipz_queue.current_q_offset;
991 spin_unlock_irqrestore(&eq->spinlock, flags);
993 } while (q_ofs == q_ofs2 && max > 0);
995 ehca_process_eq(shca, 0);
998 mod_timer(&poll_eqs_timer, round_jiffies(jiffies + HZ));
999 spin_unlock(&shca_list_lock);
1002 static int ehca_mem_notifier(struct notifier_block *nb,
1003 unsigned long action, void *data)
1005 static unsigned long ehca_dmem_warn_time;
1006 unsigned long flags;
1009 case MEM_CANCEL_OFFLINE:
1010 case MEM_CANCEL_ONLINE:
1014 case MEM_GOING_ONLINE:
1015 case MEM_GOING_OFFLINE:
1016 /* only ok if no hca is attached to the lpar */
1017 spin_lock_irqsave(&shca_list_lock, flags);
1018 if (list_empty(&shca_list)) {
1019 spin_unlock_irqrestore(&shca_list_lock, flags);
1022 spin_unlock_irqrestore(&shca_list_lock, flags);
1023 if (printk_timed_ratelimit(&ehca_dmem_warn_time,
1025 ehca_gen_err("DMEM operations are not allowed"
1026 "in conjunction with eHCA");
1033 static struct notifier_block ehca_mem_nb = {
1034 .notifier_call = ehca_mem_notifier,
1037 static int __init ehca_module_init(void)
1041 printk(KERN_INFO "eHCA Infiniband Device Driver "
1042 "(Version " HCAD_VERSION ")\n");
1044 ret = ehca_create_comp_pool();
1046 ehca_gen_err("Cannot create comp pool.");
1050 ret = ehca_create_slab_caches();
1052 ehca_gen_err("Cannot create SLAB caches");
1057 ret = ehca_create_busmap();
1059 ehca_gen_err("Cannot create busmap.");
1063 ret = ibmebus_register_driver(&ehca_driver);
1065 ehca_gen_err("Cannot register eHCA device driver");
1070 ret = register_memory_notifier(&ehca_mem_nb);
1072 ehca_gen_err("Failed registering memory add/remove notifier");
1076 if (ehca_poll_all_eqs != 1) {
1077 ehca_gen_err("WARNING!!!");
1078 ehca_gen_err("It is possible to lose interrupts.");
1080 init_timer(&poll_eqs_timer);
1081 poll_eqs_timer.function = ehca_poll_eqs;
1082 poll_eqs_timer.expires = jiffies + HZ;
1083 add_timer(&poll_eqs_timer);
1089 ibmebus_unregister_driver(&ehca_driver);
1092 ehca_destroy_busmap();
1095 ehca_destroy_slab_caches();
1098 ehca_destroy_comp_pool();
1102 static void __exit ehca_module_exit(void)
1104 if (ehca_poll_all_eqs == 1)
1105 del_timer_sync(&poll_eqs_timer);
1107 ibmebus_unregister_driver(&ehca_driver);
1109 unregister_memory_notifier(&ehca_mem_nb);
1111 ehca_destroy_busmap();
1113 ehca_destroy_slab_caches();
1115 ehca_destroy_comp_pool();
1117 idr_destroy(&ehca_cq_idr);
1118 idr_destroy(&ehca_qp_idr);
1121 module_init(ehca_module_init);
1122 module_exit(ehca_module_exit);