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 "ehca_classes.h"
48 #include "ehca_iverbs.h"
49 #include "ehca_mrmw.h"
50 #include "ehca_tools.h"
53 #define HCAD_VERSION "0025"
55 MODULE_LICENSE("Dual BSD/GPL");
56 MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
57 MODULE_DESCRIPTION("IBM eServer HCA InfiniBand Device Driver");
58 MODULE_VERSION(HCAD_VERSION);
60 static int ehca_open_aqp1 = 0;
61 static int ehca_hw_level = 0;
62 static int ehca_poll_all_eqs = 1;
63 static int ehca_mr_largepage = 1;
65 int ehca_debug_level = 0;
66 int ehca_nr_ports = 2;
67 int ehca_use_hp_mr = 0;
68 int ehca_port_act_time = 30;
69 int ehca_static_rate = -1;
70 int ehca_scaling_code = 0;
71 int ehca_lock_hcalls = -1;
73 module_param_named(open_aqp1, ehca_open_aqp1, int, S_IRUGO);
74 module_param_named(debug_level, ehca_debug_level, int, S_IRUGO);
75 module_param_named(hw_level, ehca_hw_level, int, S_IRUGO);
76 module_param_named(nr_ports, ehca_nr_ports, int, S_IRUGO);
77 module_param_named(use_hp_mr, ehca_use_hp_mr, int, S_IRUGO);
78 module_param_named(port_act_time, ehca_port_act_time, int, S_IRUGO);
79 module_param_named(poll_all_eqs, ehca_poll_all_eqs, int, S_IRUGO);
80 module_param_named(static_rate, ehca_static_rate, int, S_IRUGO);
81 module_param_named(scaling_code, ehca_scaling_code, int, S_IRUGO);
82 module_param_named(mr_largepage, ehca_mr_largepage, int, S_IRUGO);
83 module_param_named(lock_hcalls, ehca_lock_hcalls, bool, S_IRUGO);
85 MODULE_PARM_DESC(open_aqp1,
86 "AQP1 on startup (0: no (default), 1: yes)");
87 MODULE_PARM_DESC(debug_level,
88 "Amount of debug output (0: none (default), 1: traces, "
89 "2: some dumps, 3: lots)");
90 MODULE_PARM_DESC(hw_level,
92 " (0: autosensing (default), 1: v. 0.20, 2: v. 0.21)");
93 MODULE_PARM_DESC(nr_ports,
94 "number of connected ports (-1: autodetect, 1: port one only, "
95 "2: two ports (default)");
96 MODULE_PARM_DESC(use_hp_mr,
97 "high performance MRs (0: no (default), 1: yes)");
98 MODULE_PARM_DESC(port_act_time,
99 "time to wait for port activation (default: 30 sec)");
100 MODULE_PARM_DESC(poll_all_eqs,
101 "polls all event queues periodically"
102 " (0: no, 1: yes (default))");
103 MODULE_PARM_DESC(static_rate,
104 "set permanent static rate (default: disabled)");
105 MODULE_PARM_DESC(scaling_code,
106 "set scaling code (0: disabled/default, 1: enabled)");
107 MODULE_PARM_DESC(mr_largepage,
108 "use large page for MR (0: use PAGE_SIZE (default), "
109 "1: use large page depending on MR size");
110 MODULE_PARM_DESC(lock_hcalls,
111 "serialize all hCalls made by the driver "
112 "(default: autodetect)");
114 DEFINE_RWLOCK(ehca_qp_idr_lock);
115 DEFINE_RWLOCK(ehca_cq_idr_lock);
116 DEFINE_IDR(ehca_qp_idr);
117 DEFINE_IDR(ehca_cq_idr);
119 static LIST_HEAD(shca_list); /* list of all registered ehcas */
120 static DEFINE_SPINLOCK(shca_list_lock);
122 static struct timer_list poll_eqs_timer;
124 #ifdef CONFIG_PPC_64K_PAGES
125 static struct kmem_cache *ctblk_cache;
127 void *ehca_alloc_fw_ctrlblock(gfp_t flags)
129 void *ret = kmem_cache_zalloc(ctblk_cache, flags);
131 ehca_gen_err("Out of memory for ctblk");
135 void ehca_free_fw_ctrlblock(void *ptr)
138 kmem_cache_free(ctblk_cache, ptr);
143 int ehca2ib_return_code(u64 ehca_rc)
148 case H_RESOURCE: /* Resource in use */
151 case H_NOT_ENOUGH_RESOURCES: /* insufficient resources */
152 case H_CONSTRAINED: /* resource constraint */
160 static int ehca_create_slab_caches(void)
164 ret = ehca_init_pd_cache();
166 ehca_gen_err("Cannot create PD SLAB cache.");
170 ret = ehca_init_cq_cache();
172 ehca_gen_err("Cannot create CQ SLAB cache.");
173 goto create_slab_caches2;
176 ret = ehca_init_qp_cache();
178 ehca_gen_err("Cannot create QP SLAB cache.");
179 goto create_slab_caches3;
182 ret = ehca_init_av_cache();
184 ehca_gen_err("Cannot create AV SLAB cache.");
185 goto create_slab_caches4;
188 ret = ehca_init_mrmw_cache();
190 ehca_gen_err("Cannot create MR&MW SLAB cache.");
191 goto create_slab_caches5;
194 ret = ehca_init_small_qp_cache();
196 ehca_gen_err("Cannot create small queue SLAB cache.");
197 goto create_slab_caches6;
200 #ifdef CONFIG_PPC_64K_PAGES
201 ctblk_cache = kmem_cache_create("ehca_cache_ctblk",
202 EHCA_PAGESIZE, H_CB_ALIGNMENT,
206 ehca_gen_err("Cannot create ctblk SLAB cache.");
207 ehca_cleanup_small_qp_cache();
208 goto create_slab_caches6;
214 ehca_cleanup_mrmw_cache();
217 ehca_cleanup_av_cache();
220 ehca_cleanup_qp_cache();
223 ehca_cleanup_cq_cache();
226 ehca_cleanup_pd_cache();
231 static void ehca_destroy_slab_caches(void)
233 ehca_cleanup_small_qp_cache();
234 ehca_cleanup_mrmw_cache();
235 ehca_cleanup_av_cache();
236 ehca_cleanup_qp_cache();
237 ehca_cleanup_cq_cache();
238 ehca_cleanup_pd_cache();
239 #ifdef CONFIG_PPC_64K_PAGES
241 kmem_cache_destroy(ctblk_cache);
245 #define EHCA_HCAAVER EHCA_BMASK_IBM(32, 39)
246 #define EHCA_REVID EHCA_BMASK_IBM(40, 63)
248 static struct cap_descr {
251 } hca_cap_descr[] = {
252 { HCA_CAP_AH_PORT_NR_CHECK, "HCA_CAP_AH_PORT_NR_CHECK" },
253 { HCA_CAP_ATOMIC, "HCA_CAP_ATOMIC" },
254 { HCA_CAP_AUTO_PATH_MIG, "HCA_CAP_AUTO_PATH_MIG" },
255 { HCA_CAP_BAD_P_KEY_CTR, "HCA_CAP_BAD_P_KEY_CTR" },
256 { HCA_CAP_SQD_RTS_PORT_CHANGE, "HCA_CAP_SQD_RTS_PORT_CHANGE" },
257 { HCA_CAP_CUR_QP_STATE_MOD, "HCA_CAP_CUR_QP_STATE_MOD" },
258 { HCA_CAP_INIT_TYPE, "HCA_CAP_INIT_TYPE" },
259 { HCA_CAP_PORT_ACTIVE_EVENT, "HCA_CAP_PORT_ACTIVE_EVENT" },
260 { HCA_CAP_Q_KEY_VIOL_CTR, "HCA_CAP_Q_KEY_VIOL_CTR" },
261 { HCA_CAP_WQE_RESIZE, "HCA_CAP_WQE_RESIZE" },
262 { HCA_CAP_RAW_PACKET_MCAST, "HCA_CAP_RAW_PACKET_MCAST" },
263 { HCA_CAP_SHUTDOWN_PORT, "HCA_CAP_SHUTDOWN_PORT" },
264 { HCA_CAP_RC_LL_QP, "HCA_CAP_RC_LL_QP" },
265 { HCA_CAP_SRQ, "HCA_CAP_SRQ" },
266 { HCA_CAP_UD_LL_QP, "HCA_CAP_UD_LL_QP" },
267 { HCA_CAP_RESIZE_MR, "HCA_CAP_RESIZE_MR" },
268 { HCA_CAP_MINI_QP, "HCA_CAP_MINI_QP" },
269 { HCA_CAP_H_ALLOC_RES_SYNC, "HCA_CAP_H_ALLOC_RES_SYNC" },
272 static int ehca_sense_attributes(struct ehca_shca *shca)
276 struct hipz_query_hca *rblock;
277 struct hipz_query_port *port;
278 const char *loc_code;
280 static const u32 pgsize_map[] = {
281 HCA_CAP_MR_PGSIZE_4K, 0x1000,
282 HCA_CAP_MR_PGSIZE_64K, 0x10000,
283 HCA_CAP_MR_PGSIZE_1M, 0x100000,
284 HCA_CAP_MR_PGSIZE_16M, 0x1000000,
287 ehca_gen_dbg("Probing adapter %s...",
288 shca->ofdev->node->full_name);
289 loc_code = of_get_property(shca->ofdev->node, "ibm,loc-code", NULL);
291 ehca_gen_dbg(" ... location lode=%s", loc_code);
293 rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
295 ehca_gen_err("Cannot allocate rblock memory.");
299 h_ret = hipz_h_query_hca(shca->ipz_hca_handle, rblock);
300 if (h_ret != H_SUCCESS) {
301 ehca_gen_err("Cannot query device properties. h_ret=%li",
304 goto sense_attributes1;
307 if (ehca_nr_ports == 1)
310 shca->num_ports = (u8)rblock->num_ports;
312 ehca_gen_dbg(" ... found %x ports", rblock->num_ports);
314 if (ehca_hw_level == 0) {
318 hcaaver = EHCA_BMASK_GET(EHCA_HCAAVER, rblock->hw_ver);
319 revid = EHCA_BMASK_GET(EHCA_REVID, rblock->hw_ver);
321 ehca_gen_dbg(" ... hardware version=%x:%x", hcaaver, revid);
325 shca->hw_level = 0x10 | (revid + 1);
327 shca->hw_level = 0x14;
328 } else if (hcaaver == 2) {
330 shca->hw_level = 0x21;
331 else if (revid == 0x10)
332 shca->hw_level = 0x22;
333 else if (revid == 0x20 || revid == 0x21)
334 shca->hw_level = 0x23;
337 if (!shca->hw_level) {
338 ehca_gen_warn("unknown hardware version"
339 " - assuming default level");
340 shca->hw_level = 0x22;
343 shca->hw_level = ehca_hw_level;
344 ehca_gen_dbg(" ... hardware level=%x", shca->hw_level);
346 shca->hca_cap = rblock->hca_cap_indicators;
347 ehca_gen_dbg(" ... HCA capabilities:");
348 for (i = 0; i < ARRAY_SIZE(hca_cap_descr); i++)
349 if (EHCA_BMASK_GET(hca_cap_descr[i].mask, shca->hca_cap))
350 ehca_gen_dbg(" %s", hca_cap_descr[i].descr);
352 /* Autodetect hCall locking -- the "H_ALLOC_RESOURCE synced" flag is
353 * a firmware property, so it's valid across all adapters
355 if (ehca_lock_hcalls == -1)
356 ehca_lock_hcalls = !(shca->hca_cap & HCA_CAP_H_ALLOC_RES_SYNC);
358 /* translate supported MR page sizes; always support 4K */
359 shca->hca_cap_mr_pgsize = EHCA_PAGESIZE;
360 if (ehca_mr_largepage) { /* support extra sizes only if enabled */
361 for (i = 0; i < ARRAY_SIZE(pgsize_map); i += 2)
362 if (rblock->memory_page_size_supported & pgsize_map[i])
363 shca->hca_cap_mr_pgsize |= pgsize_map[i + 1];
366 /* query max MTU from first port -- it's the same for all ports */
367 port = (struct hipz_query_port *)rblock;
368 h_ret = hipz_h_query_port(shca->ipz_hca_handle, 1, port);
369 if (h_ret != H_SUCCESS) {
370 ehca_gen_err("Cannot query port properties. h_ret=%li",
373 goto sense_attributes1;
376 shca->max_mtu = port->max_mtu;
379 ehca_free_fw_ctrlblock(rblock);
383 static int init_node_guid(struct ehca_shca *shca)
386 struct hipz_query_hca *rblock;
388 rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
390 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
394 if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) {
395 ehca_err(&shca->ib_device, "Can't query device properties");
397 goto init_node_guid1;
400 memcpy(&shca->ib_device.node_guid, &rblock->node_guid, sizeof(u64));
403 ehca_free_fw_ctrlblock(rblock);
407 static int ehca_init_device(struct ehca_shca *shca)
411 ret = init_node_guid(shca);
415 strlcpy(shca->ib_device.name, "ehca%d", IB_DEVICE_NAME_MAX);
416 shca->ib_device.owner = THIS_MODULE;
418 shca->ib_device.uverbs_abi_ver = 8;
419 shca->ib_device.uverbs_cmd_mask =
420 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
421 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
422 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
423 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
424 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
425 (1ull << IB_USER_VERBS_CMD_REG_MR) |
426 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
427 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
428 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
429 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
430 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
431 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
432 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
433 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
434 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
435 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST);
437 shca->ib_device.node_type = RDMA_NODE_IB_CA;
438 shca->ib_device.phys_port_cnt = shca->num_ports;
439 shca->ib_device.num_comp_vectors = 1;
440 shca->ib_device.dma_device = &shca->ofdev->dev;
441 shca->ib_device.query_device = ehca_query_device;
442 shca->ib_device.query_port = ehca_query_port;
443 shca->ib_device.query_gid = ehca_query_gid;
444 shca->ib_device.query_pkey = ehca_query_pkey;
445 /* shca->in_device.modify_device = ehca_modify_device */
446 shca->ib_device.modify_port = ehca_modify_port;
447 shca->ib_device.alloc_ucontext = ehca_alloc_ucontext;
448 shca->ib_device.dealloc_ucontext = ehca_dealloc_ucontext;
449 shca->ib_device.alloc_pd = ehca_alloc_pd;
450 shca->ib_device.dealloc_pd = ehca_dealloc_pd;
451 shca->ib_device.create_ah = ehca_create_ah;
452 /* shca->ib_device.modify_ah = ehca_modify_ah; */
453 shca->ib_device.query_ah = ehca_query_ah;
454 shca->ib_device.destroy_ah = ehca_destroy_ah;
455 shca->ib_device.create_qp = ehca_create_qp;
456 shca->ib_device.modify_qp = ehca_modify_qp;
457 shca->ib_device.query_qp = ehca_query_qp;
458 shca->ib_device.destroy_qp = ehca_destroy_qp;
459 shca->ib_device.post_send = ehca_post_send;
460 shca->ib_device.post_recv = ehca_post_recv;
461 shca->ib_device.create_cq = ehca_create_cq;
462 shca->ib_device.destroy_cq = ehca_destroy_cq;
463 shca->ib_device.resize_cq = ehca_resize_cq;
464 shca->ib_device.poll_cq = ehca_poll_cq;
465 /* shca->ib_device.peek_cq = ehca_peek_cq; */
466 shca->ib_device.req_notify_cq = ehca_req_notify_cq;
467 /* shca->ib_device.req_ncomp_notif = ehca_req_ncomp_notif; */
468 shca->ib_device.get_dma_mr = ehca_get_dma_mr;
469 shca->ib_device.reg_phys_mr = ehca_reg_phys_mr;
470 shca->ib_device.reg_user_mr = ehca_reg_user_mr;
471 shca->ib_device.query_mr = ehca_query_mr;
472 shca->ib_device.dereg_mr = ehca_dereg_mr;
473 shca->ib_device.rereg_phys_mr = ehca_rereg_phys_mr;
474 shca->ib_device.alloc_mw = ehca_alloc_mw;
475 shca->ib_device.bind_mw = ehca_bind_mw;
476 shca->ib_device.dealloc_mw = ehca_dealloc_mw;
477 shca->ib_device.alloc_fmr = ehca_alloc_fmr;
478 shca->ib_device.map_phys_fmr = ehca_map_phys_fmr;
479 shca->ib_device.unmap_fmr = ehca_unmap_fmr;
480 shca->ib_device.dealloc_fmr = ehca_dealloc_fmr;
481 shca->ib_device.attach_mcast = ehca_attach_mcast;
482 shca->ib_device.detach_mcast = ehca_detach_mcast;
483 shca->ib_device.process_mad = ehca_process_mad;
484 shca->ib_device.mmap = ehca_mmap;
486 if (EHCA_BMASK_GET(HCA_CAP_SRQ, shca->hca_cap)) {
487 shca->ib_device.uverbs_cmd_mask |=
488 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
489 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
490 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
491 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
493 shca->ib_device.create_srq = ehca_create_srq;
494 shca->ib_device.modify_srq = ehca_modify_srq;
495 shca->ib_device.query_srq = ehca_query_srq;
496 shca->ib_device.destroy_srq = ehca_destroy_srq;
497 shca->ib_device.post_srq_recv = ehca_post_srq_recv;
503 static int ehca_create_aqp1(struct ehca_shca *shca, u32 port)
505 struct ehca_sport *sport = &shca->sport[port - 1];
508 struct ib_qp_init_attr qp_init_attr;
511 if (sport->ibcq_aqp1) {
512 ehca_err(&shca->ib_device, "AQP1 CQ is already created.");
516 ibcq = ib_create_cq(&shca->ib_device, NULL, NULL, (void *)(-1), 10, 0);
518 ehca_err(&shca->ib_device, "Cannot create AQP1 CQ.");
519 return PTR_ERR(ibcq);
521 sport->ibcq_aqp1 = ibcq;
523 if (sport->ibqp_sqp[IB_QPT_GSI]) {
524 ehca_err(&shca->ib_device, "AQP1 QP is already created.");
529 memset(&qp_init_attr, 0, sizeof(struct ib_qp_init_attr));
530 qp_init_attr.send_cq = ibcq;
531 qp_init_attr.recv_cq = ibcq;
532 qp_init_attr.sq_sig_type = IB_SIGNAL_ALL_WR;
533 qp_init_attr.cap.max_send_wr = 100;
534 qp_init_attr.cap.max_recv_wr = 100;
535 qp_init_attr.cap.max_send_sge = 2;
536 qp_init_attr.cap.max_recv_sge = 1;
537 qp_init_attr.qp_type = IB_QPT_GSI;
538 qp_init_attr.port_num = port;
539 qp_init_attr.qp_context = NULL;
540 qp_init_attr.event_handler = NULL;
541 qp_init_attr.srq = NULL;
543 ibqp = ib_create_qp(&shca->pd->ib_pd, &qp_init_attr);
545 ehca_err(&shca->ib_device, "Cannot create AQP1 QP.");
549 sport->ibqp_sqp[IB_QPT_GSI] = ibqp;
554 ib_destroy_cq(sport->ibcq_aqp1);
558 static int ehca_destroy_aqp1(struct ehca_sport *sport)
562 ret = ib_destroy_qp(sport->ibqp_sqp[IB_QPT_GSI]);
564 ehca_gen_err("Cannot destroy AQP1 QP. ret=%i", ret);
568 ret = ib_destroy_cq(sport->ibcq_aqp1);
570 ehca_gen_err("Cannot destroy AQP1 CQ. ret=%i", ret);
575 static ssize_t ehca_show_debug_level(struct device_driver *ddp, char *buf)
577 return snprintf(buf, PAGE_SIZE, "%d\n", ehca_debug_level);
580 static ssize_t ehca_store_debug_level(struct device_driver *ddp,
581 const char *buf, size_t count)
583 int value = (*buf) - '0';
584 if (value >= 0 && value <= 9)
585 ehca_debug_level = value;
589 static DRIVER_ATTR(debug_level, S_IRUSR | S_IWUSR,
590 ehca_show_debug_level, ehca_store_debug_level);
592 static struct attribute *ehca_drv_attrs[] = {
593 &driver_attr_debug_level.attr,
597 static struct attribute_group ehca_drv_attr_grp = {
598 .attrs = ehca_drv_attrs
601 static struct attribute_group *ehca_drv_attr_groups[] = {
606 #define EHCA_RESOURCE_ATTR(name) \
607 static ssize_t ehca_show_##name(struct device *dev, \
608 struct device_attribute *attr, \
611 struct ehca_shca *shca; \
612 struct hipz_query_hca *rblock; \
615 shca = dev->driver_data; \
617 rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); \
619 dev_err(dev, "Can't allocate rblock memory.\n"); \
623 if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) { \
624 dev_err(dev, "Can't query device properties\n"); \
625 ehca_free_fw_ctrlblock(rblock); \
629 data = rblock->name; \
630 ehca_free_fw_ctrlblock(rblock); \
632 if ((strcmp(#name, "num_ports") == 0) && (ehca_nr_ports == 1)) \
633 return snprintf(buf, 256, "1\n"); \
635 return snprintf(buf, 256, "%d\n", data); \
638 static DEVICE_ATTR(name, S_IRUGO, ehca_show_##name, NULL);
640 EHCA_RESOURCE_ATTR(num_ports);
641 EHCA_RESOURCE_ATTR(hw_ver);
642 EHCA_RESOURCE_ATTR(max_eq);
643 EHCA_RESOURCE_ATTR(cur_eq);
644 EHCA_RESOURCE_ATTR(max_cq);
645 EHCA_RESOURCE_ATTR(cur_cq);
646 EHCA_RESOURCE_ATTR(max_qp);
647 EHCA_RESOURCE_ATTR(cur_qp);
648 EHCA_RESOURCE_ATTR(max_mr);
649 EHCA_RESOURCE_ATTR(cur_mr);
650 EHCA_RESOURCE_ATTR(max_mw);
651 EHCA_RESOURCE_ATTR(cur_mw);
652 EHCA_RESOURCE_ATTR(max_pd);
653 EHCA_RESOURCE_ATTR(max_ah);
655 static ssize_t ehca_show_adapter_handle(struct device *dev,
656 struct device_attribute *attr,
659 struct ehca_shca *shca = dev->driver_data;
661 return sprintf(buf, "%lx\n", shca->ipz_hca_handle.handle);
664 static DEVICE_ATTR(adapter_handle, S_IRUGO, ehca_show_adapter_handle, NULL);
666 static ssize_t ehca_show_mr_largepage(struct device *dev,
667 struct device_attribute *attr,
670 return sprintf(buf, "%d\n", ehca_mr_largepage);
672 static DEVICE_ATTR(mr_largepage, S_IRUGO, ehca_show_mr_largepage, NULL);
674 static struct attribute *ehca_dev_attrs[] = {
675 &dev_attr_adapter_handle.attr,
676 &dev_attr_num_ports.attr,
677 &dev_attr_hw_ver.attr,
678 &dev_attr_max_eq.attr,
679 &dev_attr_cur_eq.attr,
680 &dev_attr_max_cq.attr,
681 &dev_attr_cur_cq.attr,
682 &dev_attr_max_qp.attr,
683 &dev_attr_cur_qp.attr,
684 &dev_attr_max_mr.attr,
685 &dev_attr_cur_mr.attr,
686 &dev_attr_max_mw.attr,
687 &dev_attr_cur_mw.attr,
688 &dev_attr_max_pd.attr,
689 &dev_attr_max_ah.attr,
690 &dev_attr_mr_largepage.attr,
694 static struct attribute_group ehca_dev_attr_grp = {
695 .attrs = ehca_dev_attrs
698 static int __devinit ehca_probe(struct of_device *dev,
699 const struct of_device_id *id)
701 struct ehca_shca *shca;
706 handle = of_get_property(dev->node, "ibm,hca-handle", NULL);
708 ehca_gen_err("Cannot get eHCA handle for adapter: %s.",
709 dev->node->full_name);
714 ehca_gen_err("Wrong eHCA handle for adapter: %s.",
715 dev->node->full_name);
719 shca = (struct ehca_shca *)ib_alloc_device(sizeof(*shca));
721 ehca_gen_err("Cannot allocate shca memory.");
724 mutex_init(&shca->modify_mutex);
725 for (i = 0; i < ARRAY_SIZE(shca->sport); i++)
726 spin_lock_init(&shca->sport[i].mod_sqp_lock);
729 shca->ipz_hca_handle.handle = *handle;
730 dev->dev.driver_data = shca;
732 ret = ehca_sense_attributes(shca);
734 ehca_gen_err("Cannot sense eHCA attributes.");
738 ret = ehca_init_device(shca);
740 ehca_gen_err("Cannot init ehca device struct");
744 /* create event queues */
745 ret = ehca_create_eq(shca, &shca->eq, EHCA_EQ, 2048);
747 ehca_err(&shca->ib_device, "Cannot create EQ.");
751 ret = ehca_create_eq(shca, &shca->neq, EHCA_NEQ, 513);
753 ehca_err(&shca->ib_device, "Cannot create NEQ.");
757 /* create internal protection domain */
758 ibpd = ehca_alloc_pd(&shca->ib_device, (void *)(-1), NULL);
760 ehca_err(&shca->ib_device, "Cannot create internal PD.");
765 shca->pd = container_of(ibpd, struct ehca_pd, ib_pd);
766 shca->pd->ib_pd.device = &shca->ib_device;
768 /* create internal max MR */
769 ret = ehca_reg_internal_maxmr(shca, shca->pd, &shca->maxmr);
772 ehca_err(&shca->ib_device, "Cannot create internal MR ret=%i",
777 ret = ib_register_device(&shca->ib_device);
779 ehca_err(&shca->ib_device,
780 "ib_register_device() failed ret=%i", ret);
784 /* create AQP1 for port 1 */
785 if (ehca_open_aqp1 == 1) {
786 shca->sport[0].port_state = IB_PORT_DOWN;
787 ret = ehca_create_aqp1(shca, 1);
789 ehca_err(&shca->ib_device,
790 "Cannot create AQP1 for port 1.");
795 /* create AQP1 for port 2 */
796 if ((ehca_open_aqp1 == 1) && (shca->num_ports == 2)) {
797 shca->sport[1].port_state = IB_PORT_DOWN;
798 ret = ehca_create_aqp1(shca, 2);
800 ehca_err(&shca->ib_device,
801 "Cannot create AQP1 for port 2.");
806 ret = sysfs_create_group(&dev->dev.kobj, &ehca_dev_attr_grp);
807 if (ret) /* only complain; we can live without attributes */
808 ehca_err(&shca->ib_device,
809 "Cannot create device attributes ret=%d", ret);
811 spin_lock(&shca_list_lock);
812 list_add(&shca->shca_list, &shca_list);
813 spin_unlock(&shca_list_lock);
818 ret = ehca_destroy_aqp1(&shca->sport[0]);
820 ehca_err(&shca->ib_device,
821 "Cannot destroy AQP1 for port 1. ret=%i", ret);
824 ib_unregister_device(&shca->ib_device);
827 ret = ehca_dereg_internal_maxmr(shca);
829 ehca_err(&shca->ib_device,
830 "Cannot destroy internal MR. ret=%x", ret);
833 ret = ehca_dealloc_pd(&shca->pd->ib_pd);
835 ehca_err(&shca->ib_device,
836 "Cannot destroy internal PD. ret=%x", ret);
839 ret = ehca_destroy_eq(shca, &shca->neq);
841 ehca_err(&shca->ib_device,
842 "Cannot destroy NEQ. ret=%x", ret);
845 ret = ehca_destroy_eq(shca, &shca->eq);
847 ehca_err(&shca->ib_device,
848 "Cannot destroy EQ. ret=%x", ret);
851 ib_dealloc_device(&shca->ib_device);
856 static int __devexit ehca_remove(struct of_device *dev)
858 struct ehca_shca *shca = dev->dev.driver_data;
861 sysfs_remove_group(&dev->dev.kobj, &ehca_dev_attr_grp);
863 if (ehca_open_aqp1 == 1) {
865 for (i = 0; i < shca->num_ports; i++) {
866 ret = ehca_destroy_aqp1(&shca->sport[i]);
868 ehca_err(&shca->ib_device,
869 "Cannot destroy AQP1 for port %x "
874 ib_unregister_device(&shca->ib_device);
876 ret = ehca_dereg_internal_maxmr(shca);
878 ehca_err(&shca->ib_device,
879 "Cannot destroy internal MR. ret=%i", ret);
881 ret = ehca_dealloc_pd(&shca->pd->ib_pd);
883 ehca_err(&shca->ib_device,
884 "Cannot destroy internal PD. ret=%i", ret);
886 ret = ehca_destroy_eq(shca, &shca->eq);
888 ehca_err(&shca->ib_device, "Cannot destroy EQ. ret=%i", ret);
890 ret = ehca_destroy_eq(shca, &shca->neq);
892 ehca_err(&shca->ib_device, "Canot destroy NEQ. ret=%i", ret);
894 ib_dealloc_device(&shca->ib_device);
896 spin_lock(&shca_list_lock);
897 list_del(&shca->shca_list);
898 spin_unlock(&shca_list_lock);
903 static struct of_device_id ehca_device_table[] =
907 .compatible = "IBM,lhca",
912 static struct of_platform_driver ehca_driver = {
914 .match_table = ehca_device_table,
916 .remove = ehca_remove,
918 .groups = ehca_drv_attr_groups,
922 void ehca_poll_eqs(unsigned long data)
924 struct ehca_shca *shca;
926 spin_lock(&shca_list_lock);
927 list_for_each_entry(shca, &shca_list, shca_list) {
928 if (shca->eq.is_initialized) {
929 /* call deadman proc only if eq ptr does not change */
930 struct ehca_eq *eq = &shca->eq;
932 volatile u64 q_ofs, q_ofs2;
934 spin_lock_irqsave(&eq->spinlock, flags);
935 q_ofs = eq->ipz_queue.current_q_offset;
936 spin_unlock_irqrestore(&eq->spinlock, flags);
938 spin_lock_irqsave(&eq->spinlock, flags);
939 q_ofs2 = eq->ipz_queue.current_q_offset;
940 spin_unlock_irqrestore(&eq->spinlock, flags);
942 } while (q_ofs == q_ofs2 && max > 0);
944 ehca_process_eq(shca, 0);
947 mod_timer(&poll_eqs_timer, round_jiffies(jiffies + HZ));
948 spin_unlock(&shca_list_lock);
951 static int __init ehca_module_init(void)
955 printk(KERN_INFO "eHCA Infiniband Device Driver "
956 "(Version " HCAD_VERSION ")\n");
958 ret = ehca_create_comp_pool();
960 ehca_gen_err("Cannot create comp pool.");
964 ret = ehca_create_slab_caches();
966 ehca_gen_err("Cannot create SLAB caches");
971 ret = ibmebus_register_driver(&ehca_driver);
973 ehca_gen_err("Cannot register eHCA device driver");
978 if (ehca_poll_all_eqs != 1) {
979 ehca_gen_err("WARNING!!!");
980 ehca_gen_err("It is possible to lose interrupts.");
982 init_timer(&poll_eqs_timer);
983 poll_eqs_timer.function = ehca_poll_eqs;
984 poll_eqs_timer.expires = jiffies + HZ;
985 add_timer(&poll_eqs_timer);
991 ehca_destroy_slab_caches();
994 ehca_destroy_comp_pool();
998 static void __exit ehca_module_exit(void)
1000 if (ehca_poll_all_eqs == 1)
1001 del_timer_sync(&poll_eqs_timer);
1003 ibmebus_unregister_driver(&ehca_driver);
1005 ehca_destroy_slab_caches();
1007 ehca_destroy_comp_pool();
1009 idr_destroy(&ehca_cq_idr);
1010 idr_destroy(&ehca_qp_idr);
1013 module_init(ehca_module_init);
1014 module_exit(ehca_module_exit);