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 "ehca_classes.h"
50 #include "ehca_iverbs.h"
51 #include "ehca_mrmw.h"
52 #include "ehca_tools.h"
55 #define HCAD_VERSION "0029"
57 MODULE_LICENSE("Dual BSD/GPL");
58 MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
59 MODULE_DESCRIPTION("IBM eServer HCA InfiniBand Device Driver");
60 MODULE_VERSION(HCAD_VERSION
);
62 static bool ehca_open_aqp1
= 0;
63 static int ehca_hw_level
= 0;
64 static bool ehca_poll_all_eqs
= 1;
66 int ehca_debug_level
= 0;
67 int ehca_nr_ports
= -1;
68 bool ehca_use_hp_mr
= 0;
69 int ehca_port_act_time
= 30;
70 int ehca_static_rate
= -1;
71 bool ehca_scaling_code
= 0;
72 int ehca_lock_hcalls
= -1;
76 module_param_named(open_aqp1
, ehca_open_aqp1
, bool, S_IRUGO
);
77 module_param_named(debug_level
, ehca_debug_level
, int, S_IRUGO
);
78 module_param_named(hw_level
, ehca_hw_level
, int, S_IRUGO
);
79 module_param_named(nr_ports
, ehca_nr_ports
, int, S_IRUGO
);
80 module_param_named(use_hp_mr
, ehca_use_hp_mr
, bool, S_IRUGO
);
81 module_param_named(port_act_time
, ehca_port_act_time
, int, S_IRUGO
);
82 module_param_named(poll_all_eqs
, ehca_poll_all_eqs
, bool, S_IRUGO
);
83 module_param_named(static_rate
, ehca_static_rate
, int, S_IRUGO
);
84 module_param_named(scaling_code
, ehca_scaling_code
, bool, S_IRUGO
);
85 module_param_named(lock_hcalls
, ehca_lock_hcalls
, bint
, S_IRUGO
);
86 module_param_named(number_of_cqs
, ehca_max_cq
, int, S_IRUGO
);
87 module_param_named(number_of_qps
, ehca_max_qp
, int, S_IRUGO
);
89 MODULE_PARM_DESC(open_aqp1
,
90 "Open AQP1 on startup (default: no)");
91 MODULE_PARM_DESC(debug_level
,
92 "Amount of debug output (0: none (default), 1: traces, "
93 "2: some dumps, 3: lots)");
94 MODULE_PARM_DESC(hw_level
,
95 "Hardware level (0: autosensing (default), "
96 "0x10..0x14: eHCA, 0x20..0x23: eHCA2)");
97 MODULE_PARM_DESC(nr_ports
,
98 "number of connected ports (-1: autodetect (default), "
99 "1: port one only, 2: two ports)");
100 MODULE_PARM_DESC(use_hp_mr
,
101 "Use high performance MRs (default: no)");
102 MODULE_PARM_DESC(port_act_time
,
103 "Time to wait for port activation (default: 30 sec)");
104 MODULE_PARM_DESC(poll_all_eqs
,
105 "Poll all event queues periodically (default: yes)");
106 MODULE_PARM_DESC(static_rate
,
107 "Set permanent static rate (default: no static rate)");
108 MODULE_PARM_DESC(scaling_code
,
109 "Enable scaling code (default: no)");
110 MODULE_PARM_DESC(lock_hcalls
,
111 "Serialize all hCalls made by the driver "
112 "(default: autodetect)");
113 MODULE_PARM_DESC(number_of_cqs
,
114 "Max number of CQs which can be allocated "
115 "(default: autodetect)");
116 MODULE_PARM_DESC(number_of_qps
,
117 "Max number of QPs which can be allocated "
118 "(default: autodetect)");
120 DEFINE_RWLOCK(ehca_qp_idr_lock
);
121 DEFINE_RWLOCK(ehca_cq_idr_lock
);
122 DEFINE_IDR(ehca_qp_idr
);
123 DEFINE_IDR(ehca_cq_idr
);
125 static LIST_HEAD(shca_list
); /* list of all registered ehcas */
126 DEFINE_SPINLOCK(shca_list_lock
);
128 static struct timer_list poll_eqs_timer
;
130 #ifdef CONFIG_PPC_64K_PAGES
131 static struct kmem_cache
*ctblk_cache
;
133 void *ehca_alloc_fw_ctrlblock(gfp_t flags
)
135 void *ret
= kmem_cache_zalloc(ctblk_cache
, flags
);
137 ehca_gen_err("Out of memory for ctblk");
141 void ehca_free_fw_ctrlblock(void *ptr
)
144 kmem_cache_free(ctblk_cache
, ptr
);
149 int ehca2ib_return_code(u64 ehca_rc
)
154 case H_RESOURCE
: /* Resource in use */
157 case H_NOT_ENOUGH_RESOURCES
: /* insufficient resources */
158 case H_CONSTRAINED
: /* resource constraint */
166 static int ehca_create_slab_caches(void)
170 ret
= ehca_init_pd_cache();
172 ehca_gen_err("Cannot create PD SLAB cache.");
176 ret
= ehca_init_cq_cache();
178 ehca_gen_err("Cannot create CQ SLAB cache.");
179 goto create_slab_caches2
;
182 ret
= ehca_init_qp_cache();
184 ehca_gen_err("Cannot create QP SLAB cache.");
185 goto create_slab_caches3
;
188 ret
= ehca_init_av_cache();
190 ehca_gen_err("Cannot create AV SLAB cache.");
191 goto create_slab_caches4
;
194 ret
= ehca_init_mrmw_cache();
196 ehca_gen_err("Cannot create MR&MW SLAB cache.");
197 goto create_slab_caches5
;
200 ret
= ehca_init_small_qp_cache();
202 ehca_gen_err("Cannot create small queue SLAB cache.");
203 goto create_slab_caches6
;
206 #ifdef CONFIG_PPC_64K_PAGES
207 ctblk_cache
= kmem_cache_create("ehca_cache_ctblk",
208 EHCA_PAGESIZE
, H_CB_ALIGNMENT
,
212 ehca_gen_err("Cannot create ctblk SLAB cache.");
213 ehca_cleanup_small_qp_cache();
214 goto create_slab_caches6
;
220 ehca_cleanup_mrmw_cache();
223 ehca_cleanup_av_cache();
226 ehca_cleanup_qp_cache();
229 ehca_cleanup_cq_cache();
232 ehca_cleanup_pd_cache();
237 static void ehca_destroy_slab_caches(void)
239 ehca_cleanup_small_qp_cache();
240 ehca_cleanup_mrmw_cache();
241 ehca_cleanup_av_cache();
242 ehca_cleanup_qp_cache();
243 ehca_cleanup_cq_cache();
244 ehca_cleanup_pd_cache();
245 #ifdef CONFIG_PPC_64K_PAGES
247 kmem_cache_destroy(ctblk_cache
);
251 #define EHCA_HCAAVER EHCA_BMASK_IBM(32, 39)
252 #define EHCA_REVID EHCA_BMASK_IBM(40, 63)
254 static struct cap_descr
{
257 } hca_cap_descr
[] = {
258 { HCA_CAP_AH_PORT_NR_CHECK
, "HCA_CAP_AH_PORT_NR_CHECK" },
259 { HCA_CAP_ATOMIC
, "HCA_CAP_ATOMIC" },
260 { HCA_CAP_AUTO_PATH_MIG
, "HCA_CAP_AUTO_PATH_MIG" },
261 { HCA_CAP_BAD_P_KEY_CTR
, "HCA_CAP_BAD_P_KEY_CTR" },
262 { HCA_CAP_SQD_RTS_PORT_CHANGE
, "HCA_CAP_SQD_RTS_PORT_CHANGE" },
263 { HCA_CAP_CUR_QP_STATE_MOD
, "HCA_CAP_CUR_QP_STATE_MOD" },
264 { HCA_CAP_INIT_TYPE
, "HCA_CAP_INIT_TYPE" },
265 { HCA_CAP_PORT_ACTIVE_EVENT
, "HCA_CAP_PORT_ACTIVE_EVENT" },
266 { HCA_CAP_Q_KEY_VIOL_CTR
, "HCA_CAP_Q_KEY_VIOL_CTR" },
267 { HCA_CAP_WQE_RESIZE
, "HCA_CAP_WQE_RESIZE" },
268 { HCA_CAP_RAW_PACKET_MCAST
, "HCA_CAP_RAW_PACKET_MCAST" },
269 { HCA_CAP_SHUTDOWN_PORT
, "HCA_CAP_SHUTDOWN_PORT" },
270 { HCA_CAP_RC_LL_QP
, "HCA_CAP_RC_LL_QP" },
271 { HCA_CAP_SRQ
, "HCA_CAP_SRQ" },
272 { HCA_CAP_UD_LL_QP
, "HCA_CAP_UD_LL_QP" },
273 { HCA_CAP_RESIZE_MR
, "HCA_CAP_RESIZE_MR" },
274 { HCA_CAP_MINI_QP
, "HCA_CAP_MINI_QP" },
275 { HCA_CAP_H_ALLOC_RES_SYNC
, "HCA_CAP_H_ALLOC_RES_SYNC" },
278 static int ehca_sense_attributes(struct ehca_shca
*shca
)
282 struct hipz_query_hca
*rblock
;
283 struct hipz_query_port
*port
;
284 const char *loc_code
;
286 static const u32 pgsize_map
[] = {
287 HCA_CAP_MR_PGSIZE_4K
, 0x1000,
288 HCA_CAP_MR_PGSIZE_64K
, 0x10000,
289 HCA_CAP_MR_PGSIZE_1M
, 0x100000,
290 HCA_CAP_MR_PGSIZE_16M
, 0x1000000,
293 ehca_gen_dbg("Probing adapter %s...",
294 shca
->ofdev
->dev
.of_node
->full_name
);
295 loc_code
= of_get_property(shca
->ofdev
->dev
.of_node
, "ibm,loc-code",
298 ehca_gen_dbg(" ... location lode=%s", loc_code
);
300 rblock
= ehca_alloc_fw_ctrlblock(GFP_KERNEL
);
302 ehca_gen_err("Cannot allocate rblock memory.");
306 h_ret
= hipz_h_query_hca(shca
->ipz_hca_handle
, rblock
);
307 if (h_ret
!= H_SUCCESS
) {
308 ehca_gen_err("Cannot query device properties. h_ret=%lli",
311 goto sense_attributes1
;
314 if (ehca_nr_ports
== 1)
317 shca
->num_ports
= (u8
)rblock
->num_ports
;
319 ehca_gen_dbg(" ... found %x ports", rblock
->num_ports
);
321 if (ehca_hw_level
== 0) {
325 hcaaver
= EHCA_BMASK_GET(EHCA_HCAAVER
, rblock
->hw_ver
);
326 revid
= EHCA_BMASK_GET(EHCA_REVID
, rblock
->hw_ver
);
328 ehca_gen_dbg(" ... hardware version=%x:%x", hcaaver
, revid
);
332 shca
->hw_level
= 0x10 | (revid
+ 1);
334 shca
->hw_level
= 0x14;
335 } else if (hcaaver
== 2) {
337 shca
->hw_level
= 0x21;
338 else if (revid
== 0x10)
339 shca
->hw_level
= 0x22;
340 else if (revid
== 0x20 || revid
== 0x21)
341 shca
->hw_level
= 0x23;
344 if (!shca
->hw_level
) {
345 ehca_gen_warn("unknown hardware version"
346 " - assuming default level");
347 shca
->hw_level
= 0x22;
350 shca
->hw_level
= ehca_hw_level
;
351 ehca_gen_dbg(" ... hardware level=%x", shca
->hw_level
);
353 shca
->hca_cap
= rblock
->hca_cap_indicators
;
354 ehca_gen_dbg(" ... HCA capabilities:");
355 for (i
= 0; i
< ARRAY_SIZE(hca_cap_descr
); i
++)
356 if (EHCA_BMASK_GET(hca_cap_descr
[i
].mask
, shca
->hca_cap
))
357 ehca_gen_dbg(" %s", hca_cap_descr
[i
].descr
);
359 /* Autodetect hCall locking -- the "H_ALLOC_RESOURCE synced" flag is
360 * a firmware property, so it's valid across all adapters
362 if (ehca_lock_hcalls
== -1)
363 ehca_lock_hcalls
= !EHCA_BMASK_GET(HCA_CAP_H_ALLOC_RES_SYNC
,
366 /* translate supported MR page sizes; always support 4K */
367 shca
->hca_cap_mr_pgsize
= EHCA_PAGESIZE
;
368 for (i
= 0; i
< ARRAY_SIZE(pgsize_map
); i
+= 2)
369 if (rblock
->memory_page_size_supported
& pgsize_map
[i
])
370 shca
->hca_cap_mr_pgsize
|= pgsize_map
[i
+ 1];
372 /* Set maximum number of CQs and QPs to calculate EQ size */
373 if (shca
->max_num_qps
== -1)
374 shca
->max_num_qps
= min_t(int, rblock
->max_qp
,
375 EHCA_MAX_NUM_QUEUES
);
376 else if (shca
->max_num_qps
< 1 || shca
->max_num_qps
> rblock
->max_qp
) {
377 ehca_gen_warn("The requested number of QPs is out of range "
378 "(1 - %i) specified by HW. Value is set to %i",
379 rblock
->max_qp
, rblock
->max_qp
);
380 shca
->max_num_qps
= rblock
->max_qp
;
383 if (shca
->max_num_cqs
== -1)
384 shca
->max_num_cqs
= min_t(int, rblock
->max_cq
,
385 EHCA_MAX_NUM_QUEUES
);
386 else if (shca
->max_num_cqs
< 1 || shca
->max_num_cqs
> rblock
->max_cq
) {
387 ehca_gen_warn("The requested number of CQs is out of range "
388 "(1 - %i) specified by HW. Value is set to %i",
389 rblock
->max_cq
, rblock
->max_cq
);
392 /* query max MTU from first port -- it's the same for all ports */
393 port
= (struct hipz_query_port
*)rblock
;
394 h_ret
= hipz_h_query_port(shca
->ipz_hca_handle
, 1, port
);
395 if (h_ret
!= H_SUCCESS
) {
396 ehca_gen_err("Cannot query port properties. h_ret=%lli",
399 goto sense_attributes1
;
402 shca
->max_mtu
= port
->max_mtu
;
405 ehca_free_fw_ctrlblock(rblock
);
409 static int init_node_guid(struct ehca_shca
*shca
)
412 struct hipz_query_hca
*rblock
;
414 rblock
= ehca_alloc_fw_ctrlblock(GFP_KERNEL
);
416 ehca_err(&shca
->ib_device
, "Can't allocate rblock memory.");
420 if (hipz_h_query_hca(shca
->ipz_hca_handle
, rblock
) != H_SUCCESS
) {
421 ehca_err(&shca
->ib_device
, "Can't query device properties");
423 goto init_node_guid1
;
426 memcpy(&shca
->ib_device
.node_guid
, &rblock
->node_guid
, sizeof(u64
));
429 ehca_free_fw_ctrlblock(rblock
);
433 static int ehca_init_device(struct ehca_shca
*shca
)
437 ret
= init_node_guid(shca
);
441 strlcpy(shca
->ib_device
.name
, "ehca%d", IB_DEVICE_NAME_MAX
);
442 shca
->ib_device
.owner
= THIS_MODULE
;
444 shca
->ib_device
.uverbs_abi_ver
= 8;
445 shca
->ib_device
.uverbs_cmd_mask
=
446 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT
) |
447 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE
) |
448 (1ull << IB_USER_VERBS_CMD_QUERY_PORT
) |
449 (1ull << IB_USER_VERBS_CMD_ALLOC_PD
) |
450 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD
) |
451 (1ull << IB_USER_VERBS_CMD_REG_MR
) |
452 (1ull << IB_USER_VERBS_CMD_DEREG_MR
) |
453 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL
) |
454 (1ull << IB_USER_VERBS_CMD_CREATE_CQ
) |
455 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ
) |
456 (1ull << IB_USER_VERBS_CMD_CREATE_QP
) |
457 (1ull << IB_USER_VERBS_CMD_MODIFY_QP
) |
458 (1ull << IB_USER_VERBS_CMD_QUERY_QP
) |
459 (1ull << IB_USER_VERBS_CMD_DESTROY_QP
) |
460 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST
) |
461 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST
);
463 shca
->ib_device
.node_type
= RDMA_NODE_IB_CA
;
464 shca
->ib_device
.phys_port_cnt
= shca
->num_ports
;
465 shca
->ib_device
.num_comp_vectors
= 1;
466 shca
->ib_device
.dma_device
= &shca
->ofdev
->dev
;
467 shca
->ib_device
.query_device
= ehca_query_device
;
468 shca
->ib_device
.query_port
= ehca_query_port
;
469 shca
->ib_device
.query_gid
= ehca_query_gid
;
470 shca
->ib_device
.query_pkey
= ehca_query_pkey
;
471 /* shca->in_device.modify_device = ehca_modify_device */
472 shca
->ib_device
.modify_port
= ehca_modify_port
;
473 shca
->ib_device
.alloc_ucontext
= ehca_alloc_ucontext
;
474 shca
->ib_device
.dealloc_ucontext
= ehca_dealloc_ucontext
;
475 shca
->ib_device
.alloc_pd
= ehca_alloc_pd
;
476 shca
->ib_device
.dealloc_pd
= ehca_dealloc_pd
;
477 shca
->ib_device
.create_ah
= ehca_create_ah
;
478 /* shca->ib_device.modify_ah = ehca_modify_ah; */
479 shca
->ib_device
.query_ah
= ehca_query_ah
;
480 shca
->ib_device
.destroy_ah
= ehca_destroy_ah
;
481 shca
->ib_device
.create_qp
= ehca_create_qp
;
482 shca
->ib_device
.modify_qp
= ehca_modify_qp
;
483 shca
->ib_device
.query_qp
= ehca_query_qp
;
484 shca
->ib_device
.destroy_qp
= ehca_destroy_qp
;
485 shca
->ib_device
.post_send
= ehca_post_send
;
486 shca
->ib_device
.post_recv
= ehca_post_recv
;
487 shca
->ib_device
.create_cq
= ehca_create_cq
;
488 shca
->ib_device
.destroy_cq
= ehca_destroy_cq
;
489 shca
->ib_device
.resize_cq
= ehca_resize_cq
;
490 shca
->ib_device
.poll_cq
= ehca_poll_cq
;
491 /* shca->ib_device.peek_cq = ehca_peek_cq; */
492 shca
->ib_device
.req_notify_cq
= ehca_req_notify_cq
;
493 /* shca->ib_device.req_ncomp_notif = ehca_req_ncomp_notif; */
494 shca
->ib_device
.get_dma_mr
= ehca_get_dma_mr
;
495 shca
->ib_device
.reg_phys_mr
= ehca_reg_phys_mr
;
496 shca
->ib_device
.reg_user_mr
= ehca_reg_user_mr
;
497 shca
->ib_device
.query_mr
= ehca_query_mr
;
498 shca
->ib_device
.dereg_mr
= ehca_dereg_mr
;
499 shca
->ib_device
.rereg_phys_mr
= ehca_rereg_phys_mr
;
500 shca
->ib_device
.alloc_mw
= ehca_alloc_mw
;
501 shca
->ib_device
.bind_mw
= ehca_bind_mw
;
502 shca
->ib_device
.dealloc_mw
= ehca_dealloc_mw
;
503 shca
->ib_device
.alloc_fmr
= ehca_alloc_fmr
;
504 shca
->ib_device
.map_phys_fmr
= ehca_map_phys_fmr
;
505 shca
->ib_device
.unmap_fmr
= ehca_unmap_fmr
;
506 shca
->ib_device
.dealloc_fmr
= ehca_dealloc_fmr
;
507 shca
->ib_device
.attach_mcast
= ehca_attach_mcast
;
508 shca
->ib_device
.detach_mcast
= ehca_detach_mcast
;
509 shca
->ib_device
.process_mad
= ehca_process_mad
;
510 shca
->ib_device
.mmap
= ehca_mmap
;
511 shca
->ib_device
.dma_ops
= &ehca_dma_mapping_ops
;
513 if (EHCA_BMASK_GET(HCA_CAP_SRQ
, shca
->hca_cap
)) {
514 shca
->ib_device
.uverbs_cmd_mask
|=
515 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ
) |
516 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ
) |
517 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ
) |
518 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ
);
520 shca
->ib_device
.create_srq
= ehca_create_srq
;
521 shca
->ib_device
.modify_srq
= ehca_modify_srq
;
522 shca
->ib_device
.query_srq
= ehca_query_srq
;
523 shca
->ib_device
.destroy_srq
= ehca_destroy_srq
;
524 shca
->ib_device
.post_srq_recv
= ehca_post_srq_recv
;
530 static int ehca_create_aqp1(struct ehca_shca
*shca
, u32 port
)
532 struct ehca_sport
*sport
= &shca
->sport
[port
- 1];
535 struct ib_qp_init_attr qp_init_attr
;
538 if (sport
->ibcq_aqp1
) {
539 ehca_err(&shca
->ib_device
, "AQP1 CQ is already created.");
543 ibcq
= ib_create_cq(&shca
->ib_device
, NULL
, NULL
, (void *)(-1), 10, 0);
545 ehca_err(&shca
->ib_device
, "Cannot create AQP1 CQ.");
546 return PTR_ERR(ibcq
);
548 sport
->ibcq_aqp1
= ibcq
;
550 if (sport
->ibqp_sqp
[IB_QPT_GSI
]) {
551 ehca_err(&shca
->ib_device
, "AQP1 QP is already created.");
556 memset(&qp_init_attr
, 0, sizeof(struct ib_qp_init_attr
));
557 qp_init_attr
.send_cq
= ibcq
;
558 qp_init_attr
.recv_cq
= ibcq
;
559 qp_init_attr
.sq_sig_type
= IB_SIGNAL_ALL_WR
;
560 qp_init_attr
.cap
.max_send_wr
= 100;
561 qp_init_attr
.cap
.max_recv_wr
= 100;
562 qp_init_attr
.cap
.max_send_sge
= 2;
563 qp_init_attr
.cap
.max_recv_sge
= 1;
564 qp_init_attr
.qp_type
= IB_QPT_GSI
;
565 qp_init_attr
.port_num
= port
;
566 qp_init_attr
.qp_context
= NULL
;
567 qp_init_attr
.event_handler
= NULL
;
568 qp_init_attr
.srq
= NULL
;
570 ibqp
= ib_create_qp(&shca
->pd
->ib_pd
, &qp_init_attr
);
572 ehca_err(&shca
->ib_device
, "Cannot create AQP1 QP.");
576 sport
->ibqp_sqp
[IB_QPT_GSI
] = ibqp
;
581 ib_destroy_cq(sport
->ibcq_aqp1
);
585 static int ehca_destroy_aqp1(struct ehca_sport
*sport
)
589 ret
= ib_destroy_qp(sport
->ibqp_sqp
[IB_QPT_GSI
]);
591 ehca_gen_err("Cannot destroy AQP1 QP. ret=%i", ret
);
595 ret
= ib_destroy_cq(sport
->ibcq_aqp1
);
597 ehca_gen_err("Cannot destroy AQP1 CQ. ret=%i", ret
);
602 static ssize_t
ehca_show_debug_level(struct device_driver
*ddp
, char *buf
)
604 return snprintf(buf
, PAGE_SIZE
, "%d\n", ehca_debug_level
);
607 static ssize_t
ehca_store_debug_level(struct device_driver
*ddp
,
608 const char *buf
, size_t count
)
610 int value
= (*buf
) - '0';
611 if (value
>= 0 && value
<= 9)
612 ehca_debug_level
= value
;
616 static DRIVER_ATTR(debug_level
, S_IRUSR
| S_IWUSR
,
617 ehca_show_debug_level
, ehca_store_debug_level
);
619 static struct attribute
*ehca_drv_attrs
[] = {
620 &driver_attr_debug_level
.attr
,
624 static struct attribute_group ehca_drv_attr_grp
= {
625 .attrs
= ehca_drv_attrs
628 static const struct attribute_group
*ehca_drv_attr_groups
[] = {
633 #define EHCA_RESOURCE_ATTR(name) \
634 static ssize_t ehca_show_##name(struct device *dev, \
635 struct device_attribute *attr, \
638 struct ehca_shca *shca; \
639 struct hipz_query_hca *rblock; \
642 shca = dev_get_drvdata(dev); \
644 rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); \
646 dev_err(dev, "Can't allocate rblock memory.\n"); \
650 if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) { \
651 dev_err(dev, "Can't query device properties\n"); \
652 ehca_free_fw_ctrlblock(rblock); \
656 data = rblock->name; \
657 ehca_free_fw_ctrlblock(rblock); \
659 if ((strcmp(#name, "num_ports") == 0) && (ehca_nr_ports == 1)) \
660 return snprintf(buf, 256, "1\n"); \
662 return snprintf(buf, 256, "%d\n", data); \
665 static DEVICE_ATTR(name, S_IRUGO, ehca_show_##name, NULL);
667 EHCA_RESOURCE_ATTR(num_ports
);
668 EHCA_RESOURCE_ATTR(hw_ver
);
669 EHCA_RESOURCE_ATTR(max_eq
);
670 EHCA_RESOURCE_ATTR(cur_eq
);
671 EHCA_RESOURCE_ATTR(max_cq
);
672 EHCA_RESOURCE_ATTR(cur_cq
);
673 EHCA_RESOURCE_ATTR(max_qp
);
674 EHCA_RESOURCE_ATTR(cur_qp
);
675 EHCA_RESOURCE_ATTR(max_mr
);
676 EHCA_RESOURCE_ATTR(cur_mr
);
677 EHCA_RESOURCE_ATTR(max_mw
);
678 EHCA_RESOURCE_ATTR(cur_mw
);
679 EHCA_RESOURCE_ATTR(max_pd
);
680 EHCA_RESOURCE_ATTR(max_ah
);
682 static ssize_t
ehca_show_adapter_handle(struct device
*dev
,
683 struct device_attribute
*attr
,
686 struct ehca_shca
*shca
= dev_get_drvdata(dev
);
688 return sprintf(buf
, "%llx\n", shca
->ipz_hca_handle
.handle
);
691 static DEVICE_ATTR(adapter_handle
, S_IRUGO
, ehca_show_adapter_handle
, NULL
);
693 static struct attribute
*ehca_dev_attrs
[] = {
694 &dev_attr_adapter_handle
.attr
,
695 &dev_attr_num_ports
.attr
,
696 &dev_attr_hw_ver
.attr
,
697 &dev_attr_max_eq
.attr
,
698 &dev_attr_cur_eq
.attr
,
699 &dev_attr_max_cq
.attr
,
700 &dev_attr_cur_cq
.attr
,
701 &dev_attr_max_qp
.attr
,
702 &dev_attr_cur_qp
.attr
,
703 &dev_attr_max_mr
.attr
,
704 &dev_attr_cur_mr
.attr
,
705 &dev_attr_max_mw
.attr
,
706 &dev_attr_cur_mw
.attr
,
707 &dev_attr_max_pd
.attr
,
708 &dev_attr_max_ah
.attr
,
712 static struct attribute_group ehca_dev_attr_grp
= {
713 .attrs
= ehca_dev_attrs
716 static int __devinit
ehca_probe(struct platform_device
*dev
,
717 const struct of_device_id
*id
)
719 struct ehca_shca
*shca
;
725 handle
= of_get_property(dev
->dev
.of_node
, "ibm,hca-handle", NULL
);
727 ehca_gen_err("Cannot get eHCA handle for adapter: %s.",
728 dev
->dev
.of_node
->full_name
);
733 ehca_gen_err("Wrong eHCA handle for adapter: %s.",
734 dev
->dev
.of_node
->full_name
);
738 shca
= (struct ehca_shca
*)ib_alloc_device(sizeof(*shca
));
740 ehca_gen_err("Cannot allocate shca memory.");
744 mutex_init(&shca
->modify_mutex
);
745 atomic_set(&shca
->num_cqs
, 0);
746 atomic_set(&shca
->num_qps
, 0);
747 shca
->max_num_qps
= ehca_max_qp
;
748 shca
->max_num_cqs
= ehca_max_cq
;
750 for (i
= 0; i
< ARRAY_SIZE(shca
->sport
); i
++)
751 spin_lock_init(&shca
->sport
[i
].mod_sqp_lock
);
754 shca
->ipz_hca_handle
.handle
= *handle
;
755 dev_set_drvdata(&dev
->dev
, shca
);
757 ret
= ehca_sense_attributes(shca
);
759 ehca_gen_err("Cannot sense eHCA attributes.");
763 ret
= ehca_init_device(shca
);
765 ehca_gen_err("Cannot init ehca device struct");
769 eq_size
= 2 * shca
->max_num_cqs
+ 4 * shca
->max_num_qps
;
770 /* create event queues */
771 ret
= ehca_create_eq(shca
, &shca
->eq
, EHCA_EQ
, eq_size
);
773 ehca_err(&shca
->ib_device
, "Cannot create EQ.");
777 ret
= ehca_create_eq(shca
, &shca
->neq
, EHCA_NEQ
, 513);
779 ehca_err(&shca
->ib_device
, "Cannot create NEQ.");
783 /* create internal protection domain */
784 ibpd
= ehca_alloc_pd(&shca
->ib_device
, (void *)(-1), NULL
);
786 ehca_err(&shca
->ib_device
, "Cannot create internal PD.");
791 shca
->pd
= container_of(ibpd
, struct ehca_pd
, ib_pd
);
792 shca
->pd
->ib_pd
.device
= &shca
->ib_device
;
794 /* create internal max MR */
795 ret
= ehca_reg_internal_maxmr(shca
, shca
->pd
, &shca
->maxmr
);
798 ehca_err(&shca
->ib_device
, "Cannot create internal MR ret=%i",
803 ret
= ib_register_device(&shca
->ib_device
, NULL
);
805 ehca_err(&shca
->ib_device
,
806 "ib_register_device() failed ret=%i", ret
);
810 /* create AQP1 for port 1 */
811 if (ehca_open_aqp1
== 1) {
812 shca
->sport
[0].port_state
= IB_PORT_DOWN
;
813 ret
= ehca_create_aqp1(shca
, 1);
815 ehca_err(&shca
->ib_device
,
816 "Cannot create AQP1 for port 1.");
821 /* create AQP1 for port 2 */
822 if ((ehca_open_aqp1
== 1) && (shca
->num_ports
== 2)) {
823 shca
->sport
[1].port_state
= IB_PORT_DOWN
;
824 ret
= ehca_create_aqp1(shca
, 2);
826 ehca_err(&shca
->ib_device
,
827 "Cannot create AQP1 for port 2.");
832 ret
= sysfs_create_group(&dev
->dev
.kobj
, &ehca_dev_attr_grp
);
833 if (ret
) /* only complain; we can live without attributes */
834 ehca_err(&shca
->ib_device
,
835 "Cannot create device attributes ret=%d", ret
);
837 spin_lock_irqsave(&shca_list_lock
, flags
);
838 list_add(&shca
->shca_list
, &shca_list
);
839 spin_unlock_irqrestore(&shca_list_lock
, flags
);
844 ret
= ehca_destroy_aqp1(&shca
->sport
[0]);
846 ehca_err(&shca
->ib_device
,
847 "Cannot destroy AQP1 for port 1. ret=%i", ret
);
850 ib_unregister_device(&shca
->ib_device
);
853 ret
= ehca_dereg_internal_maxmr(shca
);
855 ehca_err(&shca
->ib_device
,
856 "Cannot destroy internal MR. ret=%x", ret
);
859 ret
= ehca_dealloc_pd(&shca
->pd
->ib_pd
);
861 ehca_err(&shca
->ib_device
,
862 "Cannot destroy internal PD. ret=%x", ret
);
865 ret
= ehca_destroy_eq(shca
, &shca
->neq
);
867 ehca_err(&shca
->ib_device
,
868 "Cannot destroy NEQ. ret=%x", ret
);
871 ret
= ehca_destroy_eq(shca
, &shca
->eq
);
873 ehca_err(&shca
->ib_device
,
874 "Cannot destroy EQ. ret=%x", ret
);
877 ib_dealloc_device(&shca
->ib_device
);
882 static int __devexit
ehca_remove(struct platform_device
*dev
)
884 struct ehca_shca
*shca
= dev_get_drvdata(&dev
->dev
);
888 sysfs_remove_group(&dev
->dev
.kobj
, &ehca_dev_attr_grp
);
890 if (ehca_open_aqp1
== 1) {
892 for (i
= 0; i
< shca
->num_ports
; i
++) {
893 ret
= ehca_destroy_aqp1(&shca
->sport
[i
]);
895 ehca_err(&shca
->ib_device
,
896 "Cannot destroy AQP1 for port %x "
901 ib_unregister_device(&shca
->ib_device
);
903 ret
= ehca_dereg_internal_maxmr(shca
);
905 ehca_err(&shca
->ib_device
,
906 "Cannot destroy internal MR. ret=%i", ret
);
908 ret
= ehca_dealloc_pd(&shca
->pd
->ib_pd
);
910 ehca_err(&shca
->ib_device
,
911 "Cannot destroy internal PD. ret=%i", ret
);
913 ret
= ehca_destroy_eq(shca
, &shca
->eq
);
915 ehca_err(&shca
->ib_device
, "Cannot destroy EQ. ret=%i", ret
);
917 ret
= ehca_destroy_eq(shca
, &shca
->neq
);
919 ehca_err(&shca
->ib_device
, "Canot destroy NEQ. ret=%i", ret
);
921 ib_dealloc_device(&shca
->ib_device
);
923 spin_lock_irqsave(&shca_list_lock
, flags
);
924 list_del(&shca
->shca_list
);
925 spin_unlock_irqrestore(&shca_list_lock
, flags
);
930 static struct of_device_id ehca_device_table
[] =
934 .compatible
= "IBM,lhca",
938 MODULE_DEVICE_TABLE(of
, ehca_device_table
);
940 static struct of_platform_driver ehca_driver
= {
942 .remove
= ehca_remove
,
945 .owner
= THIS_MODULE
,
946 .groups
= ehca_drv_attr_groups
,
947 .of_match_table
= ehca_device_table
,
951 void ehca_poll_eqs(unsigned long data
)
953 struct ehca_shca
*shca
;
955 spin_lock(&shca_list_lock
);
956 list_for_each_entry(shca
, &shca_list
, shca_list
) {
957 if (shca
->eq
.is_initialized
) {
958 /* call deadman proc only if eq ptr does not change */
959 struct ehca_eq
*eq
= &shca
->eq
;
961 volatile u64 q_ofs
, q_ofs2
;
963 spin_lock_irqsave(&eq
->spinlock
, flags
);
964 q_ofs
= eq
->ipz_queue
.current_q_offset
;
965 spin_unlock_irqrestore(&eq
->spinlock
, flags
);
967 spin_lock_irqsave(&eq
->spinlock
, flags
);
968 q_ofs2
= eq
->ipz_queue
.current_q_offset
;
969 spin_unlock_irqrestore(&eq
->spinlock
, flags
);
971 } while (q_ofs
== q_ofs2
&& max
> 0);
973 ehca_process_eq(shca
, 0);
976 mod_timer(&poll_eqs_timer
, round_jiffies(jiffies
+ HZ
));
977 spin_unlock(&shca_list_lock
);
980 static int ehca_mem_notifier(struct notifier_block
*nb
,
981 unsigned long action
, void *data
)
983 static unsigned long ehca_dmem_warn_time
;
987 case MEM_CANCEL_OFFLINE
:
988 case MEM_CANCEL_ONLINE
:
992 case MEM_GOING_ONLINE
:
993 case MEM_GOING_OFFLINE
:
994 /* only ok if no hca is attached to the lpar */
995 spin_lock_irqsave(&shca_list_lock
, flags
);
996 if (list_empty(&shca_list
)) {
997 spin_unlock_irqrestore(&shca_list_lock
, flags
);
1000 spin_unlock_irqrestore(&shca_list_lock
, flags
);
1001 if (printk_timed_ratelimit(&ehca_dmem_warn_time
,
1003 ehca_gen_err("DMEM operations are not allowed"
1004 "in conjunction with eHCA");
1011 static struct notifier_block ehca_mem_nb
= {
1012 .notifier_call
= ehca_mem_notifier
,
1015 static int __init
ehca_module_init(void)
1019 printk(KERN_INFO
"eHCA Infiniband Device Driver "
1020 "(Version " HCAD_VERSION
")\n");
1022 ret
= ehca_create_comp_pool();
1024 ehca_gen_err("Cannot create comp pool.");
1028 ret
= ehca_create_slab_caches();
1030 ehca_gen_err("Cannot create SLAB caches");
1035 ret
= ehca_create_busmap();
1037 ehca_gen_err("Cannot create busmap.");
1041 ret
= ibmebus_register_driver(&ehca_driver
);
1043 ehca_gen_err("Cannot register eHCA device driver");
1048 ret
= register_memory_notifier(&ehca_mem_nb
);
1050 ehca_gen_err("Failed registering memory add/remove notifier");
1054 if (ehca_poll_all_eqs
!= 1) {
1055 ehca_gen_err("WARNING!!!");
1056 ehca_gen_err("It is possible to lose interrupts.");
1058 init_timer(&poll_eqs_timer
);
1059 poll_eqs_timer
.function
= ehca_poll_eqs
;
1060 poll_eqs_timer
.expires
= jiffies
+ HZ
;
1061 add_timer(&poll_eqs_timer
);
1067 ibmebus_unregister_driver(&ehca_driver
);
1070 ehca_destroy_busmap();
1073 ehca_destroy_slab_caches();
1076 ehca_destroy_comp_pool();
1080 static void __exit
ehca_module_exit(void)
1082 if (ehca_poll_all_eqs
== 1)
1083 del_timer_sync(&poll_eqs_timer
);
1085 ibmebus_unregister_driver(&ehca_driver
);
1087 unregister_memory_notifier(&ehca_mem_nb
);
1089 ehca_destroy_busmap();
1091 ehca_destroy_slab_caches();
1093 ehca_destroy_comp_pool();
1095 idr_destroy(&ehca_cq_idr
);
1096 idr_destroy(&ehca_qp_idr
);
1099 module_init(ehca_module_init
);
1100 module_exit(ehca_module_exit
);