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 #define HCAD_VERSION "0024"
54 MODULE_LICENSE("Dual BSD/GPL");
55 MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
56 MODULE_DESCRIPTION("IBM eServer HCA InfiniBand Device Driver");
57 MODULE_VERSION(HCAD_VERSION
);
59 int ehca_open_aqp1
= 0;
60 int ehca_debug_level
= 0;
61 int ehca_hw_level
= 0;
62 int ehca_nr_ports
= 2;
63 int ehca_use_hp_mr
= 0;
64 int ehca_port_act_time
= 30;
65 int ehca_poll_all_eqs
= 1;
66 int ehca_static_rate
= -1;
67 int ehca_scaling_code
= 0;
68 int ehca_mr_largepage
= 1;
70 module_param_named(open_aqp1
, ehca_open_aqp1
, int, S_IRUGO
);
71 module_param_named(debug_level
, ehca_debug_level
, int, S_IRUGO
);
72 module_param_named(hw_level
, ehca_hw_level
, int, S_IRUGO
);
73 module_param_named(nr_ports
, ehca_nr_ports
, int, S_IRUGO
);
74 module_param_named(use_hp_mr
, ehca_use_hp_mr
, int, S_IRUGO
);
75 module_param_named(port_act_time
, ehca_port_act_time
, int, S_IRUGO
);
76 module_param_named(poll_all_eqs
, ehca_poll_all_eqs
, int, S_IRUGO
);
77 module_param_named(static_rate
, ehca_static_rate
, int, S_IRUGO
);
78 module_param_named(scaling_code
, ehca_scaling_code
, int, S_IRUGO
);
79 module_param_named(mr_largepage
, ehca_mr_largepage
, int, S_IRUGO
);
81 MODULE_PARM_DESC(open_aqp1
,
82 "AQP1 on startup (0: no (default), 1: yes)");
83 MODULE_PARM_DESC(debug_level
,
85 " (0: no debug traces (default), 1: with debug traces)");
86 MODULE_PARM_DESC(hw_level
,
88 " (0: autosensing (default), 1: v. 0.20, 2: v. 0.21)");
89 MODULE_PARM_DESC(nr_ports
,
90 "number of connected ports (default: 2)");
91 MODULE_PARM_DESC(use_hp_mr
,
92 "high performance MRs (0: no (default), 1: yes)");
93 MODULE_PARM_DESC(port_act_time
,
94 "time to wait for port activation (default: 30 sec)");
95 MODULE_PARM_DESC(poll_all_eqs
,
96 "polls all event queues periodically"
97 " (0: no, 1: yes (default))");
98 MODULE_PARM_DESC(static_rate
,
99 "set permanent static rate (default: disabled)");
100 MODULE_PARM_DESC(scaling_code
,
101 "set scaling code (0: disabled/default, 1: enabled)");
102 MODULE_PARM_DESC(mr_largepage
,
103 "use large page for MR (0: use PAGE_SIZE (default), "
104 "1: use large page depending on MR size");
106 DEFINE_RWLOCK(ehca_qp_idr_lock
);
107 DEFINE_RWLOCK(ehca_cq_idr_lock
);
108 DEFINE_IDR(ehca_qp_idr
);
109 DEFINE_IDR(ehca_cq_idr
);
111 static LIST_HEAD(shca_list
); /* list of all registered ehcas */
112 static DEFINE_SPINLOCK(shca_list_lock
);
114 static struct timer_list poll_eqs_timer
;
116 #ifdef CONFIG_PPC_64K_PAGES
117 static struct kmem_cache
*ctblk_cache
;
119 void *ehca_alloc_fw_ctrlblock(gfp_t flags
)
121 void *ret
= kmem_cache_zalloc(ctblk_cache
, flags
);
123 ehca_gen_err("Out of memory for ctblk");
127 void ehca_free_fw_ctrlblock(void *ptr
)
130 kmem_cache_free(ctblk_cache
, ptr
);
135 int ehca2ib_return_code(u64 ehca_rc
)
140 case H_RESOURCE
: /* Resource in use */
143 case H_NOT_ENOUGH_RESOURCES
: /* insufficient resources */
144 case H_CONSTRAINED
: /* resource constraint */
152 static int ehca_create_slab_caches(void)
156 ret
= ehca_init_pd_cache();
158 ehca_gen_err("Cannot create PD SLAB cache.");
162 ret
= ehca_init_cq_cache();
164 ehca_gen_err("Cannot create CQ SLAB cache.");
165 goto create_slab_caches2
;
168 ret
= ehca_init_qp_cache();
170 ehca_gen_err("Cannot create QP SLAB cache.");
171 goto create_slab_caches3
;
174 ret
= ehca_init_av_cache();
176 ehca_gen_err("Cannot create AV SLAB cache.");
177 goto create_slab_caches4
;
180 ret
= ehca_init_mrmw_cache();
182 ehca_gen_err("Cannot create MR&MW SLAB cache.");
183 goto create_slab_caches5
;
186 ret
= ehca_init_small_qp_cache();
188 ehca_gen_err("Cannot create small queue SLAB cache.");
189 goto create_slab_caches6
;
192 #ifdef CONFIG_PPC_64K_PAGES
193 ctblk_cache
= kmem_cache_create("ehca_cache_ctblk",
194 EHCA_PAGESIZE
, H_CB_ALIGNMENT
,
198 ehca_gen_err("Cannot create ctblk SLAB cache.");
199 ehca_cleanup_small_qp_cache();
200 goto create_slab_caches6
;
206 ehca_cleanup_mrmw_cache();
209 ehca_cleanup_av_cache();
212 ehca_cleanup_qp_cache();
215 ehca_cleanup_cq_cache();
218 ehca_cleanup_pd_cache();
223 static void ehca_destroy_slab_caches(void)
225 ehca_cleanup_small_qp_cache();
226 ehca_cleanup_mrmw_cache();
227 ehca_cleanup_av_cache();
228 ehca_cleanup_qp_cache();
229 ehca_cleanup_cq_cache();
230 ehca_cleanup_pd_cache();
231 #ifdef CONFIG_PPC_64K_PAGES
233 kmem_cache_destroy(ctblk_cache
);
237 #define EHCA_HCAAVER EHCA_BMASK_IBM(32, 39)
238 #define EHCA_REVID EHCA_BMASK_IBM(40, 63)
240 static struct cap_descr
{
243 } hca_cap_descr
[] = {
244 { HCA_CAP_AH_PORT_NR_CHECK
, "HCA_CAP_AH_PORT_NR_CHECK" },
245 { HCA_CAP_ATOMIC
, "HCA_CAP_ATOMIC" },
246 { HCA_CAP_AUTO_PATH_MIG
, "HCA_CAP_AUTO_PATH_MIG" },
247 { HCA_CAP_BAD_P_KEY_CTR
, "HCA_CAP_BAD_P_KEY_CTR" },
248 { HCA_CAP_SQD_RTS_PORT_CHANGE
, "HCA_CAP_SQD_RTS_PORT_CHANGE" },
249 { HCA_CAP_CUR_QP_STATE_MOD
, "HCA_CAP_CUR_QP_STATE_MOD" },
250 { HCA_CAP_INIT_TYPE
, "HCA_CAP_INIT_TYPE" },
251 { HCA_CAP_PORT_ACTIVE_EVENT
, "HCA_CAP_PORT_ACTIVE_EVENT" },
252 { HCA_CAP_Q_KEY_VIOL_CTR
, "HCA_CAP_Q_KEY_VIOL_CTR" },
253 { HCA_CAP_WQE_RESIZE
, "HCA_CAP_WQE_RESIZE" },
254 { HCA_CAP_RAW_PACKET_MCAST
, "HCA_CAP_RAW_PACKET_MCAST" },
255 { HCA_CAP_SHUTDOWN_PORT
, "HCA_CAP_SHUTDOWN_PORT" },
256 { HCA_CAP_RC_LL_QP
, "HCA_CAP_RC_LL_QP" },
257 { HCA_CAP_SRQ
, "HCA_CAP_SRQ" },
258 { HCA_CAP_UD_LL_QP
, "HCA_CAP_UD_LL_QP" },
259 { HCA_CAP_RESIZE_MR
, "HCA_CAP_RESIZE_MR" },
260 { HCA_CAP_MINI_QP
, "HCA_CAP_MINI_QP" },
263 static int ehca_sense_attributes(struct ehca_shca
*shca
)
267 struct hipz_query_hca
*rblock
;
268 struct hipz_query_port
*port
;
270 static const u32 pgsize_map
[] = {
271 HCA_CAP_MR_PGSIZE_4K
, 0x1000,
272 HCA_CAP_MR_PGSIZE_64K
, 0x10000,
273 HCA_CAP_MR_PGSIZE_1M
, 0x100000,
274 HCA_CAP_MR_PGSIZE_16M
, 0x1000000,
277 rblock
= ehca_alloc_fw_ctrlblock(GFP_KERNEL
);
279 ehca_gen_err("Cannot allocate rblock memory.");
283 h_ret
= hipz_h_query_hca(shca
->ipz_hca_handle
, rblock
);
284 if (h_ret
!= H_SUCCESS
) {
285 ehca_gen_err("Cannot query device properties. h_ret=%li",
288 goto sense_attributes1
;
291 if (ehca_nr_ports
== 1)
294 shca
->num_ports
= (u8
)rblock
->num_ports
;
296 ehca_gen_dbg(" ... found %x ports", rblock
->num_ports
);
298 if (ehca_hw_level
== 0) {
302 hcaaver
= EHCA_BMASK_GET(EHCA_HCAAVER
, rblock
->hw_ver
);
303 revid
= EHCA_BMASK_GET(EHCA_REVID
, rblock
->hw_ver
);
305 ehca_gen_dbg(" ... hardware version=%x:%x", hcaaver
, revid
);
309 shca
->hw_level
= 0x10 | (revid
+ 1);
311 shca
->hw_level
= 0x14;
312 } else if (hcaaver
== 2) {
314 shca
->hw_level
= 0x21;
315 else if (revid
== 0x10)
316 shca
->hw_level
= 0x22;
317 else if (revid
== 0x20 || revid
== 0x21)
318 shca
->hw_level
= 0x23;
321 if (!shca
->hw_level
) {
322 ehca_gen_warn("unknown hardware version"
323 " - assuming default level");
324 shca
->hw_level
= 0x22;
327 shca
->hw_level
= ehca_hw_level
;
328 ehca_gen_dbg(" ... hardware level=%x", shca
->hw_level
);
330 shca
->sport
[0].rate
= IB_RATE_30_GBPS
;
331 shca
->sport
[1].rate
= IB_RATE_30_GBPS
;
333 shca
->hca_cap
= rblock
->hca_cap_indicators
;
334 ehca_gen_dbg(" ... HCA capabilities:");
335 for (i
= 0; i
< ARRAY_SIZE(hca_cap_descr
); i
++)
336 if (EHCA_BMASK_GET(hca_cap_descr
[i
].mask
, shca
->hca_cap
))
337 ehca_gen_dbg(" %s", hca_cap_descr
[i
].descr
);
339 /* translate supported MR page sizes; always support 4K */
340 shca
->hca_cap_mr_pgsize
= EHCA_PAGESIZE
;
341 if (ehca_mr_largepage
) { /* support extra sizes only if enabled */
342 for (i
= 0; i
< ARRAY_SIZE(pgsize_map
); i
+= 2)
343 if (rblock
->memory_page_size_supported
& pgsize_map
[i
])
344 shca
->hca_cap_mr_pgsize
|= pgsize_map
[i
+ 1];
347 /* query max MTU from first port -- it's the same for all ports */
348 port
= (struct hipz_query_port
*)rblock
;
349 h_ret
= hipz_h_query_port(shca
->ipz_hca_handle
, 1, port
);
350 if (h_ret
!= H_SUCCESS
) {
351 ehca_gen_err("Cannot query port properties. h_ret=%li",
354 goto sense_attributes1
;
357 shca
->max_mtu
= port
->max_mtu
;
360 ehca_free_fw_ctrlblock(rblock
);
364 static int init_node_guid(struct ehca_shca
*shca
)
367 struct hipz_query_hca
*rblock
;
369 rblock
= ehca_alloc_fw_ctrlblock(GFP_KERNEL
);
371 ehca_err(&shca
->ib_device
, "Can't allocate rblock memory.");
375 if (hipz_h_query_hca(shca
->ipz_hca_handle
, rblock
) != H_SUCCESS
) {
376 ehca_err(&shca
->ib_device
, "Can't query device properties");
378 goto init_node_guid1
;
381 memcpy(&shca
->ib_device
.node_guid
, &rblock
->node_guid
, sizeof(u64
));
384 ehca_free_fw_ctrlblock(rblock
);
388 int ehca_init_device(struct ehca_shca
*shca
)
392 ret
= init_node_guid(shca
);
396 strlcpy(shca
->ib_device
.name
, "ehca%d", IB_DEVICE_NAME_MAX
);
397 shca
->ib_device
.owner
= THIS_MODULE
;
399 shca
->ib_device
.uverbs_abi_ver
= 8;
400 shca
->ib_device
.uverbs_cmd_mask
=
401 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT
) |
402 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE
) |
403 (1ull << IB_USER_VERBS_CMD_QUERY_PORT
) |
404 (1ull << IB_USER_VERBS_CMD_ALLOC_PD
) |
405 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD
) |
406 (1ull << IB_USER_VERBS_CMD_REG_MR
) |
407 (1ull << IB_USER_VERBS_CMD_DEREG_MR
) |
408 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL
) |
409 (1ull << IB_USER_VERBS_CMD_CREATE_CQ
) |
410 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ
) |
411 (1ull << IB_USER_VERBS_CMD_CREATE_QP
) |
412 (1ull << IB_USER_VERBS_CMD_MODIFY_QP
) |
413 (1ull << IB_USER_VERBS_CMD_QUERY_QP
) |
414 (1ull << IB_USER_VERBS_CMD_DESTROY_QP
) |
415 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST
) |
416 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST
);
418 shca
->ib_device
.node_type
= RDMA_NODE_IB_CA
;
419 shca
->ib_device
.phys_port_cnt
= shca
->num_ports
;
420 shca
->ib_device
.num_comp_vectors
= 1;
421 shca
->ib_device
.dma_device
= &shca
->ofdev
->dev
;
422 shca
->ib_device
.query_device
= ehca_query_device
;
423 shca
->ib_device
.query_port
= ehca_query_port
;
424 shca
->ib_device
.query_gid
= ehca_query_gid
;
425 shca
->ib_device
.query_pkey
= ehca_query_pkey
;
426 /* shca->in_device.modify_device = ehca_modify_device */
427 shca
->ib_device
.modify_port
= ehca_modify_port
;
428 shca
->ib_device
.alloc_ucontext
= ehca_alloc_ucontext
;
429 shca
->ib_device
.dealloc_ucontext
= ehca_dealloc_ucontext
;
430 shca
->ib_device
.alloc_pd
= ehca_alloc_pd
;
431 shca
->ib_device
.dealloc_pd
= ehca_dealloc_pd
;
432 shca
->ib_device
.create_ah
= ehca_create_ah
;
433 /* shca->ib_device.modify_ah = ehca_modify_ah; */
434 shca
->ib_device
.query_ah
= ehca_query_ah
;
435 shca
->ib_device
.destroy_ah
= ehca_destroy_ah
;
436 shca
->ib_device
.create_qp
= ehca_create_qp
;
437 shca
->ib_device
.modify_qp
= ehca_modify_qp
;
438 shca
->ib_device
.query_qp
= ehca_query_qp
;
439 shca
->ib_device
.destroy_qp
= ehca_destroy_qp
;
440 shca
->ib_device
.post_send
= ehca_post_send
;
441 shca
->ib_device
.post_recv
= ehca_post_recv
;
442 shca
->ib_device
.create_cq
= ehca_create_cq
;
443 shca
->ib_device
.destroy_cq
= ehca_destroy_cq
;
444 shca
->ib_device
.resize_cq
= ehca_resize_cq
;
445 shca
->ib_device
.poll_cq
= ehca_poll_cq
;
446 /* shca->ib_device.peek_cq = ehca_peek_cq; */
447 shca
->ib_device
.req_notify_cq
= ehca_req_notify_cq
;
448 /* shca->ib_device.req_ncomp_notif = ehca_req_ncomp_notif; */
449 shca
->ib_device
.get_dma_mr
= ehca_get_dma_mr
;
450 shca
->ib_device
.reg_phys_mr
= ehca_reg_phys_mr
;
451 shca
->ib_device
.reg_user_mr
= ehca_reg_user_mr
;
452 shca
->ib_device
.query_mr
= ehca_query_mr
;
453 shca
->ib_device
.dereg_mr
= ehca_dereg_mr
;
454 shca
->ib_device
.rereg_phys_mr
= ehca_rereg_phys_mr
;
455 shca
->ib_device
.alloc_mw
= ehca_alloc_mw
;
456 shca
->ib_device
.bind_mw
= ehca_bind_mw
;
457 shca
->ib_device
.dealloc_mw
= ehca_dealloc_mw
;
458 shca
->ib_device
.alloc_fmr
= ehca_alloc_fmr
;
459 shca
->ib_device
.map_phys_fmr
= ehca_map_phys_fmr
;
460 shca
->ib_device
.unmap_fmr
= ehca_unmap_fmr
;
461 shca
->ib_device
.dealloc_fmr
= ehca_dealloc_fmr
;
462 shca
->ib_device
.attach_mcast
= ehca_attach_mcast
;
463 shca
->ib_device
.detach_mcast
= ehca_detach_mcast
;
464 /* shca->ib_device.process_mad = ehca_process_mad; */
465 shca
->ib_device
.mmap
= ehca_mmap
;
467 if (EHCA_BMASK_GET(HCA_CAP_SRQ
, shca
->hca_cap
)) {
468 shca
->ib_device
.uverbs_cmd_mask
|=
469 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ
) |
470 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ
) |
471 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ
) |
472 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ
);
474 shca
->ib_device
.create_srq
= ehca_create_srq
;
475 shca
->ib_device
.modify_srq
= ehca_modify_srq
;
476 shca
->ib_device
.query_srq
= ehca_query_srq
;
477 shca
->ib_device
.destroy_srq
= ehca_destroy_srq
;
478 shca
->ib_device
.post_srq_recv
= ehca_post_srq_recv
;
484 static int ehca_create_aqp1(struct ehca_shca
*shca
, u32 port
)
486 struct ehca_sport
*sport
= &shca
->sport
[port
- 1];
489 struct ib_qp_init_attr qp_init_attr
;
492 if (sport
->ibcq_aqp1
) {
493 ehca_err(&shca
->ib_device
, "AQP1 CQ is already created.");
497 ibcq
= ib_create_cq(&shca
->ib_device
, NULL
, NULL
, (void *)(-1), 10, 0);
499 ehca_err(&shca
->ib_device
, "Cannot create AQP1 CQ.");
500 return PTR_ERR(ibcq
);
502 sport
->ibcq_aqp1
= ibcq
;
504 if (sport
->ibqp_aqp1
) {
505 ehca_err(&shca
->ib_device
, "AQP1 QP is already created.");
510 memset(&qp_init_attr
, 0, sizeof(struct ib_qp_init_attr
));
511 qp_init_attr
.send_cq
= ibcq
;
512 qp_init_attr
.recv_cq
= ibcq
;
513 qp_init_attr
.sq_sig_type
= IB_SIGNAL_ALL_WR
;
514 qp_init_attr
.cap
.max_send_wr
= 100;
515 qp_init_attr
.cap
.max_recv_wr
= 100;
516 qp_init_attr
.cap
.max_send_sge
= 2;
517 qp_init_attr
.cap
.max_recv_sge
= 1;
518 qp_init_attr
.qp_type
= IB_QPT_GSI
;
519 qp_init_attr
.port_num
= port
;
520 qp_init_attr
.qp_context
= NULL
;
521 qp_init_attr
.event_handler
= NULL
;
522 qp_init_attr
.srq
= NULL
;
524 ibqp
= ib_create_qp(&shca
->pd
->ib_pd
, &qp_init_attr
);
526 ehca_err(&shca
->ib_device
, "Cannot create AQP1 QP.");
530 sport
->ibqp_aqp1
= ibqp
;
535 ib_destroy_cq(sport
->ibcq_aqp1
);
539 static int ehca_destroy_aqp1(struct ehca_sport
*sport
)
543 ret
= ib_destroy_qp(sport
->ibqp_aqp1
);
545 ehca_gen_err("Cannot destroy AQP1 QP. ret=%i", ret
);
549 ret
= ib_destroy_cq(sport
->ibcq_aqp1
);
551 ehca_gen_err("Cannot destroy AQP1 CQ. ret=%i", ret
);
556 static ssize_t
ehca_show_debug_level(struct device_driver
*ddp
, char *buf
)
558 return snprintf(buf
, PAGE_SIZE
, "%d\n",
562 static ssize_t
ehca_store_debug_level(struct device_driver
*ddp
,
563 const char *buf
, size_t count
)
565 int value
= (*buf
) - '0';
566 if (value
>= 0 && value
<= 9)
567 ehca_debug_level
= value
;
571 DRIVER_ATTR(debug_level
, S_IRUSR
| S_IWUSR
,
572 ehca_show_debug_level
, ehca_store_debug_level
);
574 static struct attribute
*ehca_drv_attrs
[] = {
575 &driver_attr_debug_level
.attr
,
579 static struct attribute_group ehca_drv_attr_grp
= {
580 .attrs
= ehca_drv_attrs
583 #define EHCA_RESOURCE_ATTR(name) \
584 static ssize_t ehca_show_##name(struct device *dev, \
585 struct device_attribute *attr, \
588 struct ehca_shca *shca; \
589 struct hipz_query_hca *rblock; \
592 shca = dev->driver_data; \
594 rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); \
596 dev_err(dev, "Can't allocate rblock memory.\n"); \
600 if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) { \
601 dev_err(dev, "Can't query device properties\n"); \
602 ehca_free_fw_ctrlblock(rblock); \
606 data = rblock->name; \
607 ehca_free_fw_ctrlblock(rblock); \
609 if ((strcmp(#name, "num_ports") == 0) && (ehca_nr_ports == 1)) \
610 return snprintf(buf, 256, "1\n"); \
612 return snprintf(buf, 256, "%d\n", data); \
615 static DEVICE_ATTR(name, S_IRUGO, ehca_show_##name, NULL);
617 EHCA_RESOURCE_ATTR(num_ports
);
618 EHCA_RESOURCE_ATTR(hw_ver
);
619 EHCA_RESOURCE_ATTR(max_eq
);
620 EHCA_RESOURCE_ATTR(cur_eq
);
621 EHCA_RESOURCE_ATTR(max_cq
);
622 EHCA_RESOURCE_ATTR(cur_cq
);
623 EHCA_RESOURCE_ATTR(max_qp
);
624 EHCA_RESOURCE_ATTR(cur_qp
);
625 EHCA_RESOURCE_ATTR(max_mr
);
626 EHCA_RESOURCE_ATTR(cur_mr
);
627 EHCA_RESOURCE_ATTR(max_mw
);
628 EHCA_RESOURCE_ATTR(cur_mw
);
629 EHCA_RESOURCE_ATTR(max_pd
);
630 EHCA_RESOURCE_ATTR(max_ah
);
632 static ssize_t
ehca_show_adapter_handle(struct device
*dev
,
633 struct device_attribute
*attr
,
636 struct ehca_shca
*shca
= dev
->driver_data
;
638 return sprintf(buf
, "%lx\n", shca
->ipz_hca_handle
.handle
);
641 static DEVICE_ATTR(adapter_handle
, S_IRUGO
, ehca_show_adapter_handle
, NULL
);
643 static ssize_t
ehca_show_mr_largepage(struct device
*dev
,
644 struct device_attribute
*attr
,
647 return sprintf(buf
, "%d\n", ehca_mr_largepage
);
649 static DEVICE_ATTR(mr_largepage
, S_IRUGO
, ehca_show_mr_largepage
, NULL
);
651 static struct attribute
*ehca_dev_attrs
[] = {
652 &dev_attr_adapter_handle
.attr
,
653 &dev_attr_num_ports
.attr
,
654 &dev_attr_hw_ver
.attr
,
655 &dev_attr_max_eq
.attr
,
656 &dev_attr_cur_eq
.attr
,
657 &dev_attr_max_cq
.attr
,
658 &dev_attr_cur_cq
.attr
,
659 &dev_attr_max_qp
.attr
,
660 &dev_attr_cur_qp
.attr
,
661 &dev_attr_max_mr
.attr
,
662 &dev_attr_cur_mr
.attr
,
663 &dev_attr_max_mw
.attr
,
664 &dev_attr_cur_mw
.attr
,
665 &dev_attr_max_pd
.attr
,
666 &dev_attr_max_ah
.attr
,
667 &dev_attr_mr_largepage
.attr
,
671 static struct attribute_group ehca_dev_attr_grp
= {
672 .attrs
= ehca_dev_attrs
675 static int __devinit
ehca_probe(struct of_device
*dev
,
676 const struct of_device_id
*id
)
678 struct ehca_shca
*shca
;
683 handle
= of_get_property(dev
->node
, "ibm,hca-handle", NULL
);
685 ehca_gen_err("Cannot get eHCA handle for adapter: %s.",
686 dev
->node
->full_name
);
691 ehca_gen_err("Wrong eHCA handle for adapter: %s.",
692 dev
->node
->full_name
);
696 shca
= (struct ehca_shca
*)ib_alloc_device(sizeof(*shca
));
698 ehca_gen_err("Cannot allocate shca memory.");
701 mutex_init(&shca
->modify_mutex
);
704 shca
->ipz_hca_handle
.handle
= *handle
;
705 dev
->dev
.driver_data
= shca
;
707 ret
= ehca_sense_attributes(shca
);
709 ehca_gen_err("Cannot sense eHCA attributes.");
713 ret
= ehca_init_device(shca
);
715 ehca_gen_err("Cannot init ehca device struct");
719 /* create event queues */
720 ret
= ehca_create_eq(shca
, &shca
->eq
, EHCA_EQ
, 2048);
722 ehca_err(&shca
->ib_device
, "Cannot create EQ.");
726 ret
= ehca_create_eq(shca
, &shca
->neq
, EHCA_NEQ
, 513);
728 ehca_err(&shca
->ib_device
, "Cannot create NEQ.");
732 /* create internal protection domain */
733 ibpd
= ehca_alloc_pd(&shca
->ib_device
, (void *)(-1), NULL
);
735 ehca_err(&shca
->ib_device
, "Cannot create internal PD.");
740 shca
->pd
= container_of(ibpd
, struct ehca_pd
, ib_pd
);
741 shca
->pd
->ib_pd
.device
= &shca
->ib_device
;
743 /* create internal max MR */
744 ret
= ehca_reg_internal_maxmr(shca
, shca
->pd
, &shca
->maxmr
);
747 ehca_err(&shca
->ib_device
, "Cannot create internal MR ret=%i",
752 ret
= ib_register_device(&shca
->ib_device
);
754 ehca_err(&shca
->ib_device
,
755 "ib_register_device() failed ret=%i", ret
);
759 /* create AQP1 for port 1 */
760 if (ehca_open_aqp1
== 1) {
761 shca
->sport
[0].port_state
= IB_PORT_DOWN
;
762 ret
= ehca_create_aqp1(shca
, 1);
764 ehca_err(&shca
->ib_device
,
765 "Cannot create AQP1 for port 1.");
770 /* create AQP1 for port 2 */
771 if ((ehca_open_aqp1
== 1) && (shca
->num_ports
== 2)) {
772 shca
->sport
[1].port_state
= IB_PORT_DOWN
;
773 ret
= ehca_create_aqp1(shca
, 2);
775 ehca_err(&shca
->ib_device
,
776 "Cannot create AQP1 for port 2.");
781 ret
= sysfs_create_group(&dev
->dev
.kobj
, &ehca_dev_attr_grp
);
782 if (ret
) /* only complain; we can live without attributes */
783 ehca_err(&shca
->ib_device
,
784 "Cannot create device attributes ret=%d", ret
);
786 spin_lock(&shca_list_lock
);
787 list_add(&shca
->shca_list
, &shca_list
);
788 spin_unlock(&shca_list_lock
);
793 ret
= ehca_destroy_aqp1(&shca
->sport
[0]);
795 ehca_err(&shca
->ib_device
,
796 "Cannot destroy AQP1 for port 1. ret=%i", ret
);
799 ib_unregister_device(&shca
->ib_device
);
802 ret
= ehca_dereg_internal_maxmr(shca
);
804 ehca_err(&shca
->ib_device
,
805 "Cannot destroy internal MR. ret=%x", ret
);
808 ret
= ehca_dealloc_pd(&shca
->pd
->ib_pd
);
810 ehca_err(&shca
->ib_device
,
811 "Cannot destroy internal PD. ret=%x", ret
);
814 ret
= ehca_destroy_eq(shca
, &shca
->neq
);
816 ehca_err(&shca
->ib_device
,
817 "Cannot destroy NEQ. ret=%x", ret
);
820 ret
= ehca_destroy_eq(shca
, &shca
->eq
);
822 ehca_err(&shca
->ib_device
,
823 "Cannot destroy EQ. ret=%x", ret
);
826 ib_dealloc_device(&shca
->ib_device
);
831 static int __devexit
ehca_remove(struct of_device
*dev
)
833 struct ehca_shca
*shca
= dev
->dev
.driver_data
;
836 sysfs_remove_group(&dev
->dev
.kobj
, &ehca_dev_attr_grp
);
838 if (ehca_open_aqp1
== 1) {
840 for (i
= 0; i
< shca
->num_ports
; i
++) {
841 ret
= ehca_destroy_aqp1(&shca
->sport
[i
]);
843 ehca_err(&shca
->ib_device
,
844 "Cannot destroy AQP1 for port %x "
849 ib_unregister_device(&shca
->ib_device
);
851 ret
= ehca_dereg_internal_maxmr(shca
);
853 ehca_err(&shca
->ib_device
,
854 "Cannot destroy internal MR. ret=%i", ret
);
856 ret
= ehca_dealloc_pd(&shca
->pd
->ib_pd
);
858 ehca_err(&shca
->ib_device
,
859 "Cannot destroy internal PD. ret=%i", ret
);
861 ret
= ehca_destroy_eq(shca
, &shca
->eq
);
863 ehca_err(&shca
->ib_device
, "Cannot destroy EQ. ret=%i", ret
);
865 ret
= ehca_destroy_eq(shca
, &shca
->neq
);
867 ehca_err(&shca
->ib_device
, "Canot destroy NEQ. ret=%i", ret
);
869 ib_dealloc_device(&shca
->ib_device
);
871 spin_lock(&shca_list_lock
);
872 list_del(&shca
->shca_list
);
873 spin_unlock(&shca_list_lock
);
878 static struct of_device_id ehca_device_table
[] =
882 .compatible
= "IBM,lhca",
887 static struct of_platform_driver ehca_driver
= {
889 .match_table
= ehca_device_table
,
891 .remove
= ehca_remove
,
894 void ehca_poll_eqs(unsigned long data
)
896 struct ehca_shca
*shca
;
898 spin_lock(&shca_list_lock
);
899 list_for_each_entry(shca
, &shca_list
, shca_list
) {
900 if (shca
->eq
.is_initialized
) {
901 /* call deadman proc only if eq ptr does not change */
902 struct ehca_eq
*eq
= &shca
->eq
;
904 volatile u64 q_ofs
, q_ofs2
;
906 spin_lock_irqsave(&eq
->spinlock
, flags
);
907 q_ofs
= eq
->ipz_queue
.current_q_offset
;
908 spin_unlock_irqrestore(&eq
->spinlock
, flags
);
910 spin_lock_irqsave(&eq
->spinlock
, flags
);
911 q_ofs2
= eq
->ipz_queue
.current_q_offset
;
912 spin_unlock_irqrestore(&eq
->spinlock
, flags
);
914 } while (q_ofs
== q_ofs2
&& max
> 0);
916 ehca_process_eq(shca
, 0);
919 mod_timer(&poll_eqs_timer
, jiffies
+ HZ
);
920 spin_unlock(&shca_list_lock
);
923 int __init
ehca_module_init(void)
927 printk(KERN_INFO
"eHCA Infiniband Device Driver "
928 "(Version " HCAD_VERSION
")\n");
930 ret
= ehca_create_comp_pool();
932 ehca_gen_err("Cannot create comp pool.");
936 ret
= ehca_create_slab_caches();
938 ehca_gen_err("Cannot create SLAB caches");
943 ret
= ibmebus_register_driver(&ehca_driver
);
945 ehca_gen_err("Cannot register eHCA device driver");
950 ret
= sysfs_create_group(&ehca_driver
.driver
.kobj
, &ehca_drv_attr_grp
);
951 if (ret
) /* only complain; we can live without attributes */
952 ehca_gen_err("Cannot create driver attributes ret=%d", ret
);
954 if (ehca_poll_all_eqs
!= 1) {
955 ehca_gen_err("WARNING!!!");
956 ehca_gen_err("It is possible to lose interrupts.");
958 init_timer(&poll_eqs_timer
);
959 poll_eqs_timer
.function
= ehca_poll_eqs
;
960 poll_eqs_timer
.expires
= jiffies
+ HZ
;
961 add_timer(&poll_eqs_timer
);
967 ehca_destroy_slab_caches();
970 ehca_destroy_comp_pool();
974 void __exit
ehca_module_exit(void)
976 if (ehca_poll_all_eqs
== 1)
977 del_timer_sync(&poll_eqs_timer
);
979 sysfs_remove_group(&ehca_driver
.driver
.kobj
, &ehca_drv_attr_grp
);
980 ibmebus_unregister_driver(&ehca_driver
);
982 ehca_destroy_slab_caches();
984 ehca_destroy_comp_pool();
986 idr_destroy(&ehca_cq_idr
);
987 idr_destroy(&ehca_qp_idr
);
990 module_init(ehca_module_init
);
991 module_exit(ehca_module_exit
);