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>
46 #include "ehca_classes.h"
47 #include "ehca_iverbs.h"
48 #include "ehca_mrmw.h"
49 #include "ehca_tools.h"
52 MODULE_LICENSE("Dual BSD/GPL");
53 MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
54 MODULE_DESCRIPTION("IBM eServer HCA InfiniBand Device Driver");
55 MODULE_VERSION("SVNEHCA_0023");
57 int ehca_open_aqp1
= 0;
58 int ehca_debug_level
= 0;
59 int ehca_hw_level
= 0;
60 int ehca_nr_ports
= 2;
61 int ehca_use_hp_mr
= 0;
62 int ehca_port_act_time
= 30;
63 int ehca_poll_all_eqs
= 1;
64 int ehca_static_rate
= -1;
65 int ehca_scaling_code
= 0;
66 int ehca_mr_largepage
= 0;
68 module_param_named(open_aqp1
, ehca_open_aqp1
, int, S_IRUGO
);
69 module_param_named(debug_level
, ehca_debug_level
, int, S_IRUGO
);
70 module_param_named(hw_level
, ehca_hw_level
, int, S_IRUGO
);
71 module_param_named(nr_ports
, ehca_nr_ports
, int, S_IRUGO
);
72 module_param_named(use_hp_mr
, ehca_use_hp_mr
, int, S_IRUGO
);
73 module_param_named(port_act_time
, ehca_port_act_time
, int, S_IRUGO
);
74 module_param_named(poll_all_eqs
, ehca_poll_all_eqs
, int, S_IRUGO
);
75 module_param_named(static_rate
, ehca_static_rate
, int, S_IRUGO
);
76 module_param_named(scaling_code
, ehca_scaling_code
, int, S_IRUGO
);
77 module_param_named(mr_largepage
, ehca_mr_largepage
, int, S_IRUGO
);
79 MODULE_PARM_DESC(open_aqp1
,
80 "AQP1 on startup (0: no (default), 1: yes)");
81 MODULE_PARM_DESC(debug_level
,
83 " (0: no debug traces (default), 1: with debug traces)");
84 MODULE_PARM_DESC(hw_level
,
86 " (0: autosensing (default), 1: v. 0.20, 2: v. 0.21)");
87 MODULE_PARM_DESC(nr_ports
,
88 "number of connected ports (default: 2)");
89 MODULE_PARM_DESC(use_hp_mr
,
90 "high performance MRs (0: no (default), 1: yes)");
91 MODULE_PARM_DESC(port_act_time
,
92 "time to wait for port activation (default: 30 sec)");
93 MODULE_PARM_DESC(poll_all_eqs
,
94 "polls all event queues periodically"
95 " (0: no, 1: yes (default))");
96 MODULE_PARM_DESC(static_rate
,
97 "set permanent static rate (default: disabled)");
98 MODULE_PARM_DESC(scaling_code
,
99 "set scaling code (0: disabled/default, 1: enabled)");
100 MODULE_PARM_DESC(mr_largepage
,
101 "use large page for MR (0: use PAGE_SIZE (default), "
102 "1: use large page depending on MR size");
104 DEFINE_RWLOCK(ehca_qp_idr_lock
);
105 DEFINE_RWLOCK(ehca_cq_idr_lock
);
106 DEFINE_IDR(ehca_qp_idr
);
107 DEFINE_IDR(ehca_cq_idr
);
109 static LIST_HEAD(shca_list
); /* list of all registered ehcas */
110 static DEFINE_SPINLOCK(shca_list_lock
);
112 static struct timer_list poll_eqs_timer
;
114 #ifdef CONFIG_PPC_64K_PAGES
115 static struct kmem_cache
*ctblk_cache
;
117 void *ehca_alloc_fw_ctrlblock(gfp_t flags
)
119 void *ret
= kmem_cache_zalloc(ctblk_cache
, flags
);
121 ehca_gen_err("Out of memory for ctblk");
125 void ehca_free_fw_ctrlblock(void *ptr
)
128 kmem_cache_free(ctblk_cache
, ptr
);
133 int ehca2ib_return_code(u64 ehca_rc
)
138 case H_RESOURCE
: /* Resource in use */
141 case H_NOT_ENOUGH_RESOURCES
: /* insufficient resources */
142 case H_CONSTRAINED
: /* resource constraint */
150 static int ehca_create_slab_caches(void)
154 ret
= ehca_init_pd_cache();
156 ehca_gen_err("Cannot create PD SLAB cache.");
160 ret
= ehca_init_cq_cache();
162 ehca_gen_err("Cannot create CQ SLAB cache.");
163 goto create_slab_caches2
;
166 ret
= ehca_init_qp_cache();
168 ehca_gen_err("Cannot create QP SLAB cache.");
169 goto create_slab_caches3
;
172 ret
= ehca_init_av_cache();
174 ehca_gen_err("Cannot create AV SLAB cache.");
175 goto create_slab_caches4
;
178 ret
= ehca_init_mrmw_cache();
180 ehca_gen_err("Cannot create MR&MW SLAB cache.");
181 goto create_slab_caches5
;
184 ret
= ehca_init_small_qp_cache();
186 ehca_gen_err("Cannot create small queue SLAB cache.");
187 goto create_slab_caches6
;
190 #ifdef CONFIG_PPC_64K_PAGES
191 ctblk_cache
= kmem_cache_create("ehca_cache_ctblk",
192 EHCA_PAGESIZE
, H_CB_ALIGNMENT
,
196 ehca_gen_err("Cannot create ctblk SLAB cache.");
197 ehca_cleanup_small_qp_cache();
198 goto create_slab_caches6
;
204 ehca_cleanup_mrmw_cache();
207 ehca_cleanup_av_cache();
210 ehca_cleanup_qp_cache();
213 ehca_cleanup_cq_cache();
216 ehca_cleanup_pd_cache();
221 static void ehca_destroy_slab_caches(void)
223 ehca_cleanup_small_qp_cache();
224 ehca_cleanup_mrmw_cache();
225 ehca_cleanup_av_cache();
226 ehca_cleanup_qp_cache();
227 ehca_cleanup_cq_cache();
228 ehca_cleanup_pd_cache();
229 #ifdef CONFIG_PPC_64K_PAGES
231 kmem_cache_destroy(ctblk_cache
);
235 #define EHCA_HCAAVER EHCA_BMASK_IBM(32, 39)
236 #define EHCA_REVID EHCA_BMASK_IBM(40, 63)
238 static struct cap_descr
{
241 } hca_cap_descr
[] = {
242 { HCA_CAP_AH_PORT_NR_CHECK
, "HCA_CAP_AH_PORT_NR_CHECK" },
243 { HCA_CAP_ATOMIC
, "HCA_CAP_ATOMIC" },
244 { HCA_CAP_AUTO_PATH_MIG
, "HCA_CAP_AUTO_PATH_MIG" },
245 { HCA_CAP_BAD_P_KEY_CTR
, "HCA_CAP_BAD_P_KEY_CTR" },
246 { HCA_CAP_SQD_RTS_PORT_CHANGE
, "HCA_CAP_SQD_RTS_PORT_CHANGE" },
247 { HCA_CAP_CUR_QP_STATE_MOD
, "HCA_CAP_CUR_QP_STATE_MOD" },
248 { HCA_CAP_INIT_TYPE
, "HCA_CAP_INIT_TYPE" },
249 { HCA_CAP_PORT_ACTIVE_EVENT
, "HCA_CAP_PORT_ACTIVE_EVENT" },
250 { HCA_CAP_Q_KEY_VIOL_CTR
, "HCA_CAP_Q_KEY_VIOL_CTR" },
251 { HCA_CAP_WQE_RESIZE
, "HCA_CAP_WQE_RESIZE" },
252 { HCA_CAP_RAW_PACKET_MCAST
, "HCA_CAP_RAW_PACKET_MCAST" },
253 { HCA_CAP_SHUTDOWN_PORT
, "HCA_CAP_SHUTDOWN_PORT" },
254 { HCA_CAP_RC_LL_QP
, "HCA_CAP_RC_LL_QP" },
255 { HCA_CAP_SRQ
, "HCA_CAP_SRQ" },
256 { HCA_CAP_UD_LL_QP
, "HCA_CAP_UD_LL_QP" },
257 { HCA_CAP_RESIZE_MR
, "HCA_CAP_RESIZE_MR" },
258 { HCA_CAP_MINI_QP
, "HCA_CAP_MINI_QP" },
261 int ehca_sense_attributes(struct ehca_shca
*shca
)
265 struct hipz_query_hca
*rblock
;
266 struct hipz_query_port
*port
;
268 rblock
= ehca_alloc_fw_ctrlblock(GFP_KERNEL
);
270 ehca_gen_err("Cannot allocate rblock memory.");
274 h_ret
= hipz_h_query_hca(shca
->ipz_hca_handle
, rblock
);
275 if (h_ret
!= H_SUCCESS
) {
276 ehca_gen_err("Cannot query device properties. h_ret=%lx",
279 goto sense_attributes1
;
282 if (ehca_nr_ports
== 1)
285 shca
->num_ports
= (u8
)rblock
->num_ports
;
287 ehca_gen_dbg(" ... found %x ports", rblock
->num_ports
);
289 if (ehca_hw_level
== 0) {
293 hcaaver
= EHCA_BMASK_GET(EHCA_HCAAVER
, rblock
->hw_ver
);
294 revid
= EHCA_BMASK_GET(EHCA_REVID
, rblock
->hw_ver
);
296 ehca_gen_dbg(" ... hardware version=%x:%x", hcaaver
, revid
);
300 shca
->hw_level
= 0x10 | (revid
+ 1);
302 shca
->hw_level
= 0x14;
303 } else if (hcaaver
== 2) {
305 shca
->hw_level
= 0x21;
306 else if (revid
== 0x10)
307 shca
->hw_level
= 0x22;
308 else if (revid
== 0x20 || revid
== 0x21)
309 shca
->hw_level
= 0x23;
312 if (!shca
->hw_level
) {
313 ehca_gen_warn("unknown hardware version"
314 " - assuming default level");
315 shca
->hw_level
= 0x22;
318 shca
->hw_level
= ehca_hw_level
;
319 ehca_gen_dbg(" ... hardware level=%x", shca
->hw_level
);
321 shca
->sport
[0].rate
= IB_RATE_30_GBPS
;
322 shca
->sport
[1].rate
= IB_RATE_30_GBPS
;
324 shca
->hca_cap
= rblock
->hca_cap_indicators
;
325 ehca_gen_dbg(" ... HCA capabilities:");
326 for (i
= 0; i
< ARRAY_SIZE(hca_cap_descr
); i
++)
327 if (EHCA_BMASK_GET(hca_cap_descr
[i
].mask
, shca
->hca_cap
))
328 ehca_gen_dbg(" %s", hca_cap_descr
[i
].descr
);
330 shca
->hca_cap_mr_pgsize
= rblock
->memory_page_size_supported
;
332 port
= (struct hipz_query_port
*)rblock
;
333 h_ret
= hipz_h_query_port(shca
->ipz_hca_handle
, 1, port
);
334 if (h_ret
!= H_SUCCESS
) {
335 ehca_gen_err("Cannot query port properties. h_ret=%lx",
338 goto sense_attributes1
;
341 shca
->max_mtu
= port
->max_mtu
;
344 ehca_free_fw_ctrlblock(rblock
);
348 static int init_node_guid(struct ehca_shca
*shca
)
351 struct hipz_query_hca
*rblock
;
353 rblock
= ehca_alloc_fw_ctrlblock(GFP_KERNEL
);
355 ehca_err(&shca
->ib_device
, "Can't allocate rblock memory.");
359 if (hipz_h_query_hca(shca
->ipz_hca_handle
, rblock
) != H_SUCCESS
) {
360 ehca_err(&shca
->ib_device
, "Can't query device properties");
362 goto init_node_guid1
;
365 memcpy(&shca
->ib_device
.node_guid
, &rblock
->node_guid
, sizeof(u64
));
368 ehca_free_fw_ctrlblock(rblock
);
372 int ehca_init_device(struct ehca_shca
*shca
)
376 ret
= init_node_guid(shca
);
380 strlcpy(shca
->ib_device
.name
, "ehca%d", IB_DEVICE_NAME_MAX
);
381 shca
->ib_device
.owner
= THIS_MODULE
;
383 shca
->ib_device
.uverbs_abi_ver
= 7;
384 shca
->ib_device
.uverbs_cmd_mask
=
385 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT
) |
386 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE
) |
387 (1ull << IB_USER_VERBS_CMD_QUERY_PORT
) |
388 (1ull << IB_USER_VERBS_CMD_ALLOC_PD
) |
389 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD
) |
390 (1ull << IB_USER_VERBS_CMD_REG_MR
) |
391 (1ull << IB_USER_VERBS_CMD_DEREG_MR
) |
392 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL
) |
393 (1ull << IB_USER_VERBS_CMD_CREATE_CQ
) |
394 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ
) |
395 (1ull << IB_USER_VERBS_CMD_CREATE_QP
) |
396 (1ull << IB_USER_VERBS_CMD_MODIFY_QP
) |
397 (1ull << IB_USER_VERBS_CMD_QUERY_QP
) |
398 (1ull << IB_USER_VERBS_CMD_DESTROY_QP
) |
399 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST
) |
400 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST
);
402 shca
->ib_device
.node_type
= RDMA_NODE_IB_CA
;
403 shca
->ib_device
.phys_port_cnt
= shca
->num_ports
;
404 shca
->ib_device
.num_comp_vectors
= 1;
405 shca
->ib_device
.dma_device
= &shca
->ibmebus_dev
->ofdev
.dev
;
406 shca
->ib_device
.query_device
= ehca_query_device
;
407 shca
->ib_device
.query_port
= ehca_query_port
;
408 shca
->ib_device
.query_gid
= ehca_query_gid
;
409 shca
->ib_device
.query_pkey
= ehca_query_pkey
;
410 /* shca->in_device.modify_device = ehca_modify_device */
411 shca
->ib_device
.modify_port
= ehca_modify_port
;
412 shca
->ib_device
.alloc_ucontext
= ehca_alloc_ucontext
;
413 shca
->ib_device
.dealloc_ucontext
= ehca_dealloc_ucontext
;
414 shca
->ib_device
.alloc_pd
= ehca_alloc_pd
;
415 shca
->ib_device
.dealloc_pd
= ehca_dealloc_pd
;
416 shca
->ib_device
.create_ah
= ehca_create_ah
;
417 /* shca->ib_device.modify_ah = ehca_modify_ah; */
418 shca
->ib_device
.query_ah
= ehca_query_ah
;
419 shca
->ib_device
.destroy_ah
= ehca_destroy_ah
;
420 shca
->ib_device
.create_qp
= ehca_create_qp
;
421 shca
->ib_device
.modify_qp
= ehca_modify_qp
;
422 shca
->ib_device
.query_qp
= ehca_query_qp
;
423 shca
->ib_device
.destroy_qp
= ehca_destroy_qp
;
424 shca
->ib_device
.post_send
= ehca_post_send
;
425 shca
->ib_device
.post_recv
= ehca_post_recv
;
426 shca
->ib_device
.create_cq
= ehca_create_cq
;
427 shca
->ib_device
.destroy_cq
= ehca_destroy_cq
;
428 shca
->ib_device
.resize_cq
= ehca_resize_cq
;
429 shca
->ib_device
.poll_cq
= ehca_poll_cq
;
430 /* shca->ib_device.peek_cq = ehca_peek_cq; */
431 shca
->ib_device
.req_notify_cq
= ehca_req_notify_cq
;
432 /* shca->ib_device.req_ncomp_notif = ehca_req_ncomp_notif; */
433 shca
->ib_device
.get_dma_mr
= ehca_get_dma_mr
;
434 shca
->ib_device
.reg_phys_mr
= ehca_reg_phys_mr
;
435 shca
->ib_device
.reg_user_mr
= ehca_reg_user_mr
;
436 shca
->ib_device
.query_mr
= ehca_query_mr
;
437 shca
->ib_device
.dereg_mr
= ehca_dereg_mr
;
438 shca
->ib_device
.rereg_phys_mr
= ehca_rereg_phys_mr
;
439 shca
->ib_device
.alloc_mw
= ehca_alloc_mw
;
440 shca
->ib_device
.bind_mw
= ehca_bind_mw
;
441 shca
->ib_device
.dealloc_mw
= ehca_dealloc_mw
;
442 shca
->ib_device
.alloc_fmr
= ehca_alloc_fmr
;
443 shca
->ib_device
.map_phys_fmr
= ehca_map_phys_fmr
;
444 shca
->ib_device
.unmap_fmr
= ehca_unmap_fmr
;
445 shca
->ib_device
.dealloc_fmr
= ehca_dealloc_fmr
;
446 shca
->ib_device
.attach_mcast
= ehca_attach_mcast
;
447 shca
->ib_device
.detach_mcast
= ehca_detach_mcast
;
448 /* shca->ib_device.process_mad = ehca_process_mad; */
449 shca
->ib_device
.mmap
= ehca_mmap
;
451 if (EHCA_BMASK_GET(HCA_CAP_SRQ
, shca
->hca_cap
)) {
452 shca
->ib_device
.uverbs_cmd_mask
|=
453 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ
) |
454 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ
) |
455 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ
) |
456 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ
);
458 shca
->ib_device
.create_srq
= ehca_create_srq
;
459 shca
->ib_device
.modify_srq
= ehca_modify_srq
;
460 shca
->ib_device
.query_srq
= ehca_query_srq
;
461 shca
->ib_device
.destroy_srq
= ehca_destroy_srq
;
462 shca
->ib_device
.post_srq_recv
= ehca_post_srq_recv
;
468 static int ehca_create_aqp1(struct ehca_shca
*shca
, u32 port
)
470 struct ehca_sport
*sport
= &shca
->sport
[port
- 1];
473 struct ib_qp_init_attr qp_init_attr
;
476 if (sport
->ibcq_aqp1
) {
477 ehca_err(&shca
->ib_device
, "AQP1 CQ is already created.");
481 ibcq
= ib_create_cq(&shca
->ib_device
, NULL
, NULL
, (void *)(-1), 10, 0);
483 ehca_err(&shca
->ib_device
, "Cannot create AQP1 CQ.");
484 return PTR_ERR(ibcq
);
486 sport
->ibcq_aqp1
= ibcq
;
488 if (sport
->ibqp_aqp1
) {
489 ehca_err(&shca
->ib_device
, "AQP1 QP is already created.");
494 memset(&qp_init_attr
, 0, sizeof(struct ib_qp_init_attr
));
495 qp_init_attr
.send_cq
= ibcq
;
496 qp_init_attr
.recv_cq
= ibcq
;
497 qp_init_attr
.sq_sig_type
= IB_SIGNAL_ALL_WR
;
498 qp_init_attr
.cap
.max_send_wr
= 100;
499 qp_init_attr
.cap
.max_recv_wr
= 100;
500 qp_init_attr
.cap
.max_send_sge
= 2;
501 qp_init_attr
.cap
.max_recv_sge
= 1;
502 qp_init_attr
.qp_type
= IB_QPT_GSI
;
503 qp_init_attr
.port_num
= port
;
504 qp_init_attr
.qp_context
= NULL
;
505 qp_init_attr
.event_handler
= NULL
;
506 qp_init_attr
.srq
= NULL
;
508 ibqp
= ib_create_qp(&shca
->pd
->ib_pd
, &qp_init_attr
);
510 ehca_err(&shca
->ib_device
, "Cannot create AQP1 QP.");
514 sport
->ibqp_aqp1
= ibqp
;
519 ib_destroy_cq(sport
->ibcq_aqp1
);
523 static int ehca_destroy_aqp1(struct ehca_sport
*sport
)
527 ret
= ib_destroy_qp(sport
->ibqp_aqp1
);
529 ehca_gen_err("Cannot destroy AQP1 QP. ret=%x", ret
);
533 ret
= ib_destroy_cq(sport
->ibcq_aqp1
);
535 ehca_gen_err("Cannot destroy AQP1 CQ. ret=%x", ret
);
540 static ssize_t
ehca_show_debug_level(struct device_driver
*ddp
, char *buf
)
542 return snprintf(buf
, PAGE_SIZE
, "%d\n",
546 static ssize_t
ehca_store_debug_level(struct device_driver
*ddp
,
547 const char *buf
, size_t count
)
549 int value
= (*buf
) - '0';
550 if (value
>= 0 && value
<= 9)
551 ehca_debug_level
= value
;
555 DRIVER_ATTR(debug_level
, S_IRUSR
| S_IWUSR
,
556 ehca_show_debug_level
, ehca_store_debug_level
);
558 static struct attribute
*ehca_drv_attrs
[] = {
559 &driver_attr_debug_level
.attr
,
563 static struct attribute_group ehca_drv_attr_grp
= {
564 .attrs
= ehca_drv_attrs
567 #define EHCA_RESOURCE_ATTR(name) \
568 static ssize_t ehca_show_##name(struct device *dev, \
569 struct device_attribute *attr, \
572 struct ehca_shca *shca; \
573 struct hipz_query_hca *rblock; \
576 shca = dev->driver_data; \
578 rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); \
580 dev_err(dev, "Can't allocate rblock memory."); \
584 if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) { \
585 dev_err(dev, "Can't query device properties"); \
586 ehca_free_fw_ctrlblock(rblock); \
590 data = rblock->name; \
591 ehca_free_fw_ctrlblock(rblock); \
593 if ((strcmp(#name, "num_ports") == 0) && (ehca_nr_ports == 1)) \
594 return snprintf(buf, 256, "1\n"); \
596 return snprintf(buf, 256, "%d\n", data); \
599 static DEVICE_ATTR(name, S_IRUGO, ehca_show_##name, NULL);
601 EHCA_RESOURCE_ATTR(num_ports
);
602 EHCA_RESOURCE_ATTR(hw_ver
);
603 EHCA_RESOURCE_ATTR(max_eq
);
604 EHCA_RESOURCE_ATTR(cur_eq
);
605 EHCA_RESOURCE_ATTR(max_cq
);
606 EHCA_RESOURCE_ATTR(cur_cq
);
607 EHCA_RESOURCE_ATTR(max_qp
);
608 EHCA_RESOURCE_ATTR(cur_qp
);
609 EHCA_RESOURCE_ATTR(max_mr
);
610 EHCA_RESOURCE_ATTR(cur_mr
);
611 EHCA_RESOURCE_ATTR(max_mw
);
612 EHCA_RESOURCE_ATTR(cur_mw
);
613 EHCA_RESOURCE_ATTR(max_pd
);
614 EHCA_RESOURCE_ATTR(max_ah
);
616 static ssize_t
ehca_show_adapter_handle(struct device
*dev
,
617 struct device_attribute
*attr
,
620 struct ehca_shca
*shca
= dev
->driver_data
;
622 return sprintf(buf
, "%lx\n", shca
->ipz_hca_handle
.handle
);
625 static DEVICE_ATTR(adapter_handle
, S_IRUGO
, ehca_show_adapter_handle
, NULL
);
627 static ssize_t
ehca_show_mr_largepage(struct device
*dev
,
628 struct device_attribute
*attr
,
631 return sprintf(buf
, "%d\n", ehca_mr_largepage
);
633 static DEVICE_ATTR(mr_largepage
, S_IRUGO
, ehca_show_mr_largepage
, NULL
);
635 static struct attribute
*ehca_dev_attrs
[] = {
636 &dev_attr_adapter_handle
.attr
,
637 &dev_attr_num_ports
.attr
,
638 &dev_attr_hw_ver
.attr
,
639 &dev_attr_max_eq
.attr
,
640 &dev_attr_cur_eq
.attr
,
641 &dev_attr_max_cq
.attr
,
642 &dev_attr_cur_cq
.attr
,
643 &dev_attr_max_qp
.attr
,
644 &dev_attr_cur_qp
.attr
,
645 &dev_attr_max_mr
.attr
,
646 &dev_attr_cur_mr
.attr
,
647 &dev_attr_max_mw
.attr
,
648 &dev_attr_cur_mw
.attr
,
649 &dev_attr_max_pd
.attr
,
650 &dev_attr_max_ah
.attr
,
651 &dev_attr_mr_largepage
.attr
,
655 static struct attribute_group ehca_dev_attr_grp
= {
656 .attrs
= ehca_dev_attrs
659 static int __devinit
ehca_probe(struct ibmebus_dev
*dev
,
660 const struct of_device_id
*id
)
662 struct ehca_shca
*shca
;
667 handle
= of_get_property(dev
->ofdev
.node
, "ibm,hca-handle", NULL
);
669 ehca_gen_err("Cannot get eHCA handle for adapter: %s.",
670 dev
->ofdev
.node
->full_name
);
675 ehca_gen_err("Wrong eHCA handle for adapter: %s.",
676 dev
->ofdev
.node
->full_name
);
680 shca
= (struct ehca_shca
*)ib_alloc_device(sizeof(*shca
));
682 ehca_gen_err("Cannot allocate shca memory.");
685 mutex_init(&shca
->modify_mutex
);
687 shca
->ibmebus_dev
= dev
;
688 shca
->ipz_hca_handle
.handle
= *handle
;
689 dev
->ofdev
.dev
.driver_data
= shca
;
691 ret
= ehca_sense_attributes(shca
);
693 ehca_gen_err("Cannot sense eHCA attributes.");
697 ret
= ehca_init_device(shca
);
699 ehca_gen_err("Cannot init ehca device struct");
703 /* create event queues */
704 ret
= ehca_create_eq(shca
, &shca
->eq
, EHCA_EQ
, 2048);
706 ehca_err(&shca
->ib_device
, "Cannot create EQ.");
710 ret
= ehca_create_eq(shca
, &shca
->neq
, EHCA_NEQ
, 513);
712 ehca_err(&shca
->ib_device
, "Cannot create NEQ.");
716 /* create internal protection domain */
717 ibpd
= ehca_alloc_pd(&shca
->ib_device
, (void *)(-1), NULL
);
719 ehca_err(&shca
->ib_device
, "Cannot create internal PD.");
724 shca
->pd
= container_of(ibpd
, struct ehca_pd
, ib_pd
);
725 shca
->pd
->ib_pd
.device
= &shca
->ib_device
;
727 /* create internal max MR */
728 ret
= ehca_reg_internal_maxmr(shca
, shca
->pd
, &shca
->maxmr
);
731 ehca_err(&shca
->ib_device
, "Cannot create internal MR ret=%x",
736 ret
= ib_register_device(&shca
->ib_device
);
738 ehca_err(&shca
->ib_device
,
739 "ib_register_device() failed ret=%x", ret
);
743 /* create AQP1 for port 1 */
744 if (ehca_open_aqp1
== 1) {
745 shca
->sport
[0].port_state
= IB_PORT_DOWN
;
746 ret
= ehca_create_aqp1(shca
, 1);
748 ehca_err(&shca
->ib_device
,
749 "Cannot create AQP1 for port 1.");
754 /* create AQP1 for port 2 */
755 if ((ehca_open_aqp1
== 1) && (shca
->num_ports
== 2)) {
756 shca
->sport
[1].port_state
= IB_PORT_DOWN
;
757 ret
= ehca_create_aqp1(shca
, 2);
759 ehca_err(&shca
->ib_device
,
760 "Cannot create AQP1 for port 2.");
765 ret
= sysfs_create_group(&dev
->ofdev
.dev
.kobj
, &ehca_dev_attr_grp
);
766 if (ret
) /* only complain; we can live without attributes */
767 ehca_err(&shca
->ib_device
,
768 "Cannot create device attributes ret=%d", ret
);
770 spin_lock(&shca_list_lock
);
771 list_add(&shca
->shca_list
, &shca_list
);
772 spin_unlock(&shca_list_lock
);
777 ret
= ehca_destroy_aqp1(&shca
->sport
[0]);
779 ehca_err(&shca
->ib_device
,
780 "Cannot destroy AQP1 for port 1. ret=%x", ret
);
783 ib_unregister_device(&shca
->ib_device
);
786 ret
= ehca_dereg_internal_maxmr(shca
);
788 ehca_err(&shca
->ib_device
,
789 "Cannot destroy internal MR. ret=%x", ret
);
792 ret
= ehca_dealloc_pd(&shca
->pd
->ib_pd
);
794 ehca_err(&shca
->ib_device
,
795 "Cannot destroy internal PD. ret=%x", ret
);
798 ret
= ehca_destroy_eq(shca
, &shca
->neq
);
800 ehca_err(&shca
->ib_device
,
801 "Cannot destroy NEQ. ret=%x", ret
);
804 ret
= ehca_destroy_eq(shca
, &shca
->eq
);
806 ehca_err(&shca
->ib_device
,
807 "Cannot destroy EQ. ret=%x", ret
);
810 ib_dealloc_device(&shca
->ib_device
);
815 static int __devexit
ehca_remove(struct ibmebus_dev
*dev
)
817 struct ehca_shca
*shca
= dev
->ofdev
.dev
.driver_data
;
820 sysfs_remove_group(&dev
->ofdev
.dev
.kobj
, &ehca_dev_attr_grp
);
822 if (ehca_open_aqp1
== 1) {
824 for (i
= 0; i
< shca
->num_ports
; i
++) {
825 ret
= ehca_destroy_aqp1(&shca
->sport
[i
]);
827 ehca_err(&shca
->ib_device
,
828 "Cannot destroy AQP1 for port %x "
833 ib_unregister_device(&shca
->ib_device
);
835 ret
= ehca_dereg_internal_maxmr(shca
);
837 ehca_err(&shca
->ib_device
,
838 "Cannot destroy internal MR. ret=%x", ret
);
840 ret
= ehca_dealloc_pd(&shca
->pd
->ib_pd
);
842 ehca_err(&shca
->ib_device
,
843 "Cannot destroy internal PD. ret=%x", ret
);
845 ret
= ehca_destroy_eq(shca
, &shca
->eq
);
847 ehca_err(&shca
->ib_device
, "Cannot destroy EQ. ret=%x", ret
);
849 ret
= ehca_destroy_eq(shca
, &shca
->neq
);
851 ehca_err(&shca
->ib_device
, "Canot destroy NEQ. ret=%x", ret
);
853 ib_dealloc_device(&shca
->ib_device
);
855 spin_lock(&shca_list_lock
);
856 list_del(&shca
->shca_list
);
857 spin_unlock(&shca_list_lock
);
862 static struct of_device_id ehca_device_table
[] =
866 .compatible
= "IBM,lhca",
871 static struct ibmebus_driver ehca_driver
= {
873 .id_table
= ehca_device_table
,
875 .remove
= ehca_remove
,
878 void ehca_poll_eqs(unsigned long data
)
880 struct ehca_shca
*shca
;
882 spin_lock(&shca_list_lock
);
883 list_for_each_entry(shca
, &shca_list
, shca_list
) {
884 if (shca
->eq
.is_initialized
) {
885 /* call deadman proc only if eq ptr does not change */
886 struct ehca_eq
*eq
= &shca
->eq
;
888 volatile u64 q_ofs
, q_ofs2
;
890 spin_lock_irqsave(&eq
->spinlock
, flags
);
891 q_ofs
= eq
->ipz_queue
.current_q_offset
;
892 spin_unlock_irqrestore(&eq
->spinlock
, flags
);
894 spin_lock_irqsave(&eq
->spinlock
, flags
);
895 q_ofs2
= eq
->ipz_queue
.current_q_offset
;
896 spin_unlock_irqrestore(&eq
->spinlock
, flags
);
898 } while (q_ofs
== q_ofs2
&& max
> 0);
900 ehca_process_eq(shca
, 0);
903 mod_timer(&poll_eqs_timer
, jiffies
+ HZ
);
904 spin_unlock(&shca_list_lock
);
907 int __init
ehca_module_init(void)
911 printk(KERN_INFO
"eHCA Infiniband Device Driver "
912 "(Rel.: SVNEHCA_0023)\n");
914 ret
= ehca_create_comp_pool();
916 ehca_gen_err("Cannot create comp pool.");
920 ret
= ehca_create_slab_caches();
922 ehca_gen_err("Cannot create SLAB caches");
927 ret
= ibmebus_register_driver(&ehca_driver
);
929 ehca_gen_err("Cannot register eHCA device driver");
934 ret
= sysfs_create_group(&ehca_driver
.driver
.kobj
, &ehca_drv_attr_grp
);
935 if (ret
) /* only complain; we can live without attributes */
936 ehca_gen_err("Cannot create driver attributes ret=%d", ret
);
938 if (ehca_poll_all_eqs
!= 1) {
939 ehca_gen_err("WARNING!!!");
940 ehca_gen_err("It is possible to lose interrupts.");
942 init_timer(&poll_eqs_timer
);
943 poll_eqs_timer
.function
= ehca_poll_eqs
;
944 poll_eqs_timer
.expires
= jiffies
+ HZ
;
945 add_timer(&poll_eqs_timer
);
951 ehca_destroy_slab_caches();
954 ehca_destroy_comp_pool();
958 void __exit
ehca_module_exit(void)
960 if (ehca_poll_all_eqs
== 1)
961 del_timer_sync(&poll_eqs_timer
);
963 sysfs_remove_group(&ehca_driver
.driver
.kobj
, &ehca_drv_attr_grp
);
964 ibmebus_unregister_driver(&ehca_driver
);
966 ehca_destroy_slab_caches();
968 ehca_destroy_comp_pool();
970 idr_destroy(&ehca_cq_idr
);
971 idr_destroy(&ehca_qp_idr
);
974 module_init(ehca_module_init
);
975 module_exit(ehca_module_exit
);