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();
215 goto create_slab_caches6
;
221 ehca_cleanup_mrmw_cache();
224 ehca_cleanup_av_cache();
227 ehca_cleanup_qp_cache();
230 ehca_cleanup_cq_cache();
233 ehca_cleanup_pd_cache();
238 static void ehca_destroy_slab_caches(void)
240 ehca_cleanup_small_qp_cache();
241 ehca_cleanup_mrmw_cache();
242 ehca_cleanup_av_cache();
243 ehca_cleanup_qp_cache();
244 ehca_cleanup_cq_cache();
245 ehca_cleanup_pd_cache();
246 #ifdef CONFIG_PPC_64K_PAGES
248 kmem_cache_destroy(ctblk_cache
);
252 #define EHCA_HCAAVER EHCA_BMASK_IBM(32, 39)
253 #define EHCA_REVID EHCA_BMASK_IBM(40, 63)
255 static struct cap_descr
{
258 } hca_cap_descr
[] = {
259 { HCA_CAP_AH_PORT_NR_CHECK
, "HCA_CAP_AH_PORT_NR_CHECK" },
260 { HCA_CAP_ATOMIC
, "HCA_CAP_ATOMIC" },
261 { HCA_CAP_AUTO_PATH_MIG
, "HCA_CAP_AUTO_PATH_MIG" },
262 { HCA_CAP_BAD_P_KEY_CTR
, "HCA_CAP_BAD_P_KEY_CTR" },
263 { HCA_CAP_SQD_RTS_PORT_CHANGE
, "HCA_CAP_SQD_RTS_PORT_CHANGE" },
264 { HCA_CAP_CUR_QP_STATE_MOD
, "HCA_CAP_CUR_QP_STATE_MOD" },
265 { HCA_CAP_INIT_TYPE
, "HCA_CAP_INIT_TYPE" },
266 { HCA_CAP_PORT_ACTIVE_EVENT
, "HCA_CAP_PORT_ACTIVE_EVENT" },
267 { HCA_CAP_Q_KEY_VIOL_CTR
, "HCA_CAP_Q_KEY_VIOL_CTR" },
268 { HCA_CAP_WQE_RESIZE
, "HCA_CAP_WQE_RESIZE" },
269 { HCA_CAP_RAW_PACKET_MCAST
, "HCA_CAP_RAW_PACKET_MCAST" },
270 { HCA_CAP_SHUTDOWN_PORT
, "HCA_CAP_SHUTDOWN_PORT" },
271 { HCA_CAP_RC_LL_QP
, "HCA_CAP_RC_LL_QP" },
272 { HCA_CAP_SRQ
, "HCA_CAP_SRQ" },
273 { HCA_CAP_UD_LL_QP
, "HCA_CAP_UD_LL_QP" },
274 { HCA_CAP_RESIZE_MR
, "HCA_CAP_RESIZE_MR" },
275 { HCA_CAP_MINI_QP
, "HCA_CAP_MINI_QP" },
276 { HCA_CAP_H_ALLOC_RES_SYNC
, "HCA_CAP_H_ALLOC_RES_SYNC" },
279 static int ehca_sense_attributes(struct ehca_shca
*shca
)
283 struct hipz_query_hca
*rblock
;
284 struct hipz_query_port
*port
;
285 const char *loc_code
;
287 static const u32 pgsize_map
[] = {
288 HCA_CAP_MR_PGSIZE_4K
, 0x1000,
289 HCA_CAP_MR_PGSIZE_64K
, 0x10000,
290 HCA_CAP_MR_PGSIZE_1M
, 0x100000,
291 HCA_CAP_MR_PGSIZE_16M
, 0x1000000,
294 ehca_gen_dbg("Probing adapter %s...",
295 shca
->ofdev
->dev
.of_node
->full_name
);
296 loc_code
= of_get_property(shca
->ofdev
->dev
.of_node
, "ibm,loc-code",
299 ehca_gen_dbg(" ... location lode=%s", loc_code
);
301 rblock
= ehca_alloc_fw_ctrlblock(GFP_KERNEL
);
303 ehca_gen_err("Cannot allocate rblock memory.");
307 h_ret
= hipz_h_query_hca(shca
->ipz_hca_handle
, rblock
);
308 if (h_ret
!= H_SUCCESS
) {
309 ehca_gen_err("Cannot query device properties. h_ret=%lli",
312 goto sense_attributes1
;
315 if (ehca_nr_ports
== 1)
318 shca
->num_ports
= (u8
)rblock
->num_ports
;
320 ehca_gen_dbg(" ... found %x ports", rblock
->num_ports
);
322 if (ehca_hw_level
== 0) {
326 hcaaver
= EHCA_BMASK_GET(EHCA_HCAAVER
, rblock
->hw_ver
);
327 revid
= EHCA_BMASK_GET(EHCA_REVID
, rblock
->hw_ver
);
329 ehca_gen_dbg(" ... hardware version=%x:%x", hcaaver
, revid
);
333 shca
->hw_level
= 0x10 | (revid
+ 1);
335 shca
->hw_level
= 0x14;
336 } else if (hcaaver
== 2) {
338 shca
->hw_level
= 0x21;
339 else if (revid
== 0x10)
340 shca
->hw_level
= 0x22;
341 else if (revid
== 0x20 || revid
== 0x21)
342 shca
->hw_level
= 0x23;
345 if (!shca
->hw_level
) {
346 ehca_gen_warn("unknown hardware version"
347 " - assuming default level");
348 shca
->hw_level
= 0x22;
351 shca
->hw_level
= ehca_hw_level
;
352 ehca_gen_dbg(" ... hardware level=%x", shca
->hw_level
);
354 shca
->hca_cap
= rblock
->hca_cap_indicators
;
355 ehca_gen_dbg(" ... HCA capabilities:");
356 for (i
= 0; i
< ARRAY_SIZE(hca_cap_descr
); i
++)
357 if (EHCA_BMASK_GET(hca_cap_descr
[i
].mask
, shca
->hca_cap
))
358 ehca_gen_dbg(" %s", hca_cap_descr
[i
].descr
);
360 /* Autodetect hCall locking -- the "H_ALLOC_RESOURCE synced" flag is
361 * a firmware property, so it's valid across all adapters
363 if (ehca_lock_hcalls
== -1)
364 ehca_lock_hcalls
= !EHCA_BMASK_GET(HCA_CAP_H_ALLOC_RES_SYNC
,
367 /* translate supported MR page sizes; always support 4K */
368 shca
->hca_cap_mr_pgsize
= EHCA_PAGESIZE
;
369 for (i
= 0; i
< ARRAY_SIZE(pgsize_map
); i
+= 2)
370 if (rblock
->memory_page_size_supported
& pgsize_map
[i
])
371 shca
->hca_cap_mr_pgsize
|= pgsize_map
[i
+ 1];
373 /* Set maximum number of CQs and QPs to calculate EQ size */
374 if (shca
->max_num_qps
== -1)
375 shca
->max_num_qps
= min_t(int, rblock
->max_qp
,
376 EHCA_MAX_NUM_QUEUES
);
377 else if (shca
->max_num_qps
< 1 || shca
->max_num_qps
> rblock
->max_qp
) {
378 ehca_gen_warn("The requested number of QPs is out of range "
379 "(1 - %i) specified by HW. Value is set to %i",
380 rblock
->max_qp
, rblock
->max_qp
);
381 shca
->max_num_qps
= rblock
->max_qp
;
384 if (shca
->max_num_cqs
== -1)
385 shca
->max_num_cqs
= min_t(int, rblock
->max_cq
,
386 EHCA_MAX_NUM_QUEUES
);
387 else if (shca
->max_num_cqs
< 1 || shca
->max_num_cqs
> rblock
->max_cq
) {
388 ehca_gen_warn("The requested number of CQs is out of range "
389 "(1 - %i) specified by HW. Value is set to %i",
390 rblock
->max_cq
, rblock
->max_cq
);
393 /* query max MTU from first port -- it's the same for all ports */
394 port
= (struct hipz_query_port
*)rblock
;
395 h_ret
= hipz_h_query_port(shca
->ipz_hca_handle
, 1, port
);
396 if (h_ret
!= H_SUCCESS
) {
397 ehca_gen_err("Cannot query port properties. h_ret=%lli",
400 goto sense_attributes1
;
403 shca
->max_mtu
= port
->max_mtu
;
406 ehca_free_fw_ctrlblock(rblock
);
410 static int init_node_guid(struct ehca_shca
*shca
)
413 struct hipz_query_hca
*rblock
;
415 rblock
= ehca_alloc_fw_ctrlblock(GFP_KERNEL
);
417 ehca_err(&shca
->ib_device
, "Can't allocate rblock memory.");
421 if (hipz_h_query_hca(shca
->ipz_hca_handle
, rblock
) != H_SUCCESS
) {
422 ehca_err(&shca
->ib_device
, "Can't query device properties");
424 goto init_node_guid1
;
427 memcpy(&shca
->ib_device
.node_guid
, &rblock
->node_guid
, sizeof(u64
));
430 ehca_free_fw_ctrlblock(rblock
);
434 static int ehca_port_immutable(struct ib_device
*ibdev
, u8 port_num
,
435 struct ib_port_immutable
*immutable
)
437 struct ib_port_attr attr
;
440 err
= ehca_query_port(ibdev
, port_num
, &attr
);
444 immutable
->pkey_tbl_len
= attr
.pkey_tbl_len
;
445 immutable
->gid_tbl_len
= attr
.gid_tbl_len
;
446 immutable
->core_cap_flags
= RDMA_CORE_PORT_IBA_IB
;
451 static int ehca_init_device(struct ehca_shca
*shca
)
455 ret
= init_node_guid(shca
);
459 strlcpy(shca
->ib_device
.name
, "ehca%d", IB_DEVICE_NAME_MAX
);
460 shca
->ib_device
.owner
= THIS_MODULE
;
462 shca
->ib_device
.uverbs_abi_ver
= 8;
463 shca
->ib_device
.uverbs_cmd_mask
=
464 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT
) |
465 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE
) |
466 (1ull << IB_USER_VERBS_CMD_QUERY_PORT
) |
467 (1ull << IB_USER_VERBS_CMD_ALLOC_PD
) |
468 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD
) |
469 (1ull << IB_USER_VERBS_CMD_REG_MR
) |
470 (1ull << IB_USER_VERBS_CMD_DEREG_MR
) |
471 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL
) |
472 (1ull << IB_USER_VERBS_CMD_CREATE_CQ
) |
473 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ
) |
474 (1ull << IB_USER_VERBS_CMD_CREATE_QP
) |
475 (1ull << IB_USER_VERBS_CMD_MODIFY_QP
) |
476 (1ull << IB_USER_VERBS_CMD_QUERY_QP
) |
477 (1ull << IB_USER_VERBS_CMD_DESTROY_QP
) |
478 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST
) |
479 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST
);
481 shca
->ib_device
.node_type
= RDMA_NODE_IB_CA
;
482 shca
->ib_device
.phys_port_cnt
= shca
->num_ports
;
483 shca
->ib_device
.num_comp_vectors
= 1;
484 shca
->ib_device
.dma_device
= &shca
->ofdev
->dev
;
485 shca
->ib_device
.query_device
= ehca_query_device
;
486 shca
->ib_device
.query_port
= ehca_query_port
;
487 shca
->ib_device
.query_gid
= ehca_query_gid
;
488 shca
->ib_device
.query_pkey
= ehca_query_pkey
;
489 /* shca->in_device.modify_device = ehca_modify_device */
490 shca
->ib_device
.modify_port
= ehca_modify_port
;
491 shca
->ib_device
.alloc_ucontext
= ehca_alloc_ucontext
;
492 shca
->ib_device
.dealloc_ucontext
= ehca_dealloc_ucontext
;
493 shca
->ib_device
.alloc_pd
= ehca_alloc_pd
;
494 shca
->ib_device
.dealloc_pd
= ehca_dealloc_pd
;
495 shca
->ib_device
.create_ah
= ehca_create_ah
;
496 /* shca->ib_device.modify_ah = ehca_modify_ah; */
497 shca
->ib_device
.query_ah
= ehca_query_ah
;
498 shca
->ib_device
.destroy_ah
= ehca_destroy_ah
;
499 shca
->ib_device
.create_qp
= ehca_create_qp
;
500 shca
->ib_device
.modify_qp
= ehca_modify_qp
;
501 shca
->ib_device
.query_qp
= ehca_query_qp
;
502 shca
->ib_device
.destroy_qp
= ehca_destroy_qp
;
503 shca
->ib_device
.post_send
= ehca_post_send
;
504 shca
->ib_device
.post_recv
= ehca_post_recv
;
505 shca
->ib_device
.create_cq
= ehca_create_cq
;
506 shca
->ib_device
.destroy_cq
= ehca_destroy_cq
;
507 shca
->ib_device
.resize_cq
= ehca_resize_cq
;
508 shca
->ib_device
.poll_cq
= ehca_poll_cq
;
509 /* shca->ib_device.peek_cq = ehca_peek_cq; */
510 shca
->ib_device
.req_notify_cq
= ehca_req_notify_cq
;
511 /* shca->ib_device.req_ncomp_notif = ehca_req_ncomp_notif; */
512 shca
->ib_device
.get_dma_mr
= ehca_get_dma_mr
;
513 shca
->ib_device
.reg_phys_mr
= ehca_reg_phys_mr
;
514 shca
->ib_device
.reg_user_mr
= ehca_reg_user_mr
;
515 shca
->ib_device
.query_mr
= ehca_query_mr
;
516 shca
->ib_device
.dereg_mr
= ehca_dereg_mr
;
517 shca
->ib_device
.rereg_phys_mr
= ehca_rereg_phys_mr
;
518 shca
->ib_device
.alloc_mw
= ehca_alloc_mw
;
519 shca
->ib_device
.bind_mw
= ehca_bind_mw
;
520 shca
->ib_device
.dealloc_mw
= ehca_dealloc_mw
;
521 shca
->ib_device
.alloc_fmr
= ehca_alloc_fmr
;
522 shca
->ib_device
.map_phys_fmr
= ehca_map_phys_fmr
;
523 shca
->ib_device
.unmap_fmr
= ehca_unmap_fmr
;
524 shca
->ib_device
.dealloc_fmr
= ehca_dealloc_fmr
;
525 shca
->ib_device
.attach_mcast
= ehca_attach_mcast
;
526 shca
->ib_device
.detach_mcast
= ehca_detach_mcast
;
527 shca
->ib_device
.process_mad
= ehca_process_mad
;
528 shca
->ib_device
.mmap
= ehca_mmap
;
529 shca
->ib_device
.dma_ops
= &ehca_dma_mapping_ops
;
530 shca
->ib_device
.get_port_immutable
= ehca_port_immutable
;
532 if (EHCA_BMASK_GET(HCA_CAP_SRQ
, shca
->hca_cap
)) {
533 shca
->ib_device
.uverbs_cmd_mask
|=
534 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ
) |
535 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ
) |
536 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ
) |
537 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ
);
539 shca
->ib_device
.create_srq
= ehca_create_srq
;
540 shca
->ib_device
.modify_srq
= ehca_modify_srq
;
541 shca
->ib_device
.query_srq
= ehca_query_srq
;
542 shca
->ib_device
.destroy_srq
= ehca_destroy_srq
;
543 shca
->ib_device
.post_srq_recv
= ehca_post_srq_recv
;
549 static int ehca_create_aqp1(struct ehca_shca
*shca
, u32 port
)
551 struct ehca_sport
*sport
= &shca
->sport
[port
- 1];
554 struct ib_qp_init_attr qp_init_attr
;
555 struct ib_cq_init_attr cq_attr
= {};
558 if (sport
->ibcq_aqp1
) {
559 ehca_err(&shca
->ib_device
, "AQP1 CQ is already created.");
564 ibcq
= ib_create_cq(&shca
->ib_device
, NULL
, NULL
, (void *)(-1),
567 ehca_err(&shca
->ib_device
, "Cannot create AQP1 CQ.");
568 return PTR_ERR(ibcq
);
570 sport
->ibcq_aqp1
= ibcq
;
572 if (sport
->ibqp_sqp
[IB_QPT_GSI
]) {
573 ehca_err(&shca
->ib_device
, "AQP1 QP is already created.");
578 memset(&qp_init_attr
, 0, sizeof(struct ib_qp_init_attr
));
579 qp_init_attr
.send_cq
= ibcq
;
580 qp_init_attr
.recv_cq
= ibcq
;
581 qp_init_attr
.sq_sig_type
= IB_SIGNAL_ALL_WR
;
582 qp_init_attr
.cap
.max_send_wr
= 100;
583 qp_init_attr
.cap
.max_recv_wr
= 100;
584 qp_init_attr
.cap
.max_send_sge
= 2;
585 qp_init_attr
.cap
.max_recv_sge
= 1;
586 qp_init_attr
.qp_type
= IB_QPT_GSI
;
587 qp_init_attr
.port_num
= port
;
588 qp_init_attr
.qp_context
= NULL
;
589 qp_init_attr
.event_handler
= NULL
;
590 qp_init_attr
.srq
= NULL
;
592 ibqp
= ib_create_qp(&shca
->pd
->ib_pd
, &qp_init_attr
);
594 ehca_err(&shca
->ib_device
, "Cannot create AQP1 QP.");
598 sport
->ibqp_sqp
[IB_QPT_GSI
] = ibqp
;
603 ib_destroy_cq(sport
->ibcq_aqp1
);
607 static int ehca_destroy_aqp1(struct ehca_sport
*sport
)
611 ret
= ib_destroy_qp(sport
->ibqp_sqp
[IB_QPT_GSI
]);
613 ehca_gen_err("Cannot destroy AQP1 QP. ret=%i", ret
);
617 ret
= ib_destroy_cq(sport
->ibcq_aqp1
);
619 ehca_gen_err("Cannot destroy AQP1 CQ. ret=%i", ret
);
624 static ssize_t
ehca_show_debug_level(struct device_driver
*ddp
, char *buf
)
626 return snprintf(buf
, PAGE_SIZE
, "%d\n", ehca_debug_level
);
629 static ssize_t
ehca_store_debug_level(struct device_driver
*ddp
,
630 const char *buf
, size_t count
)
632 int value
= (*buf
) - '0';
633 if (value
>= 0 && value
<= 9)
634 ehca_debug_level
= value
;
638 static DRIVER_ATTR(debug_level
, S_IRUSR
| S_IWUSR
,
639 ehca_show_debug_level
, ehca_store_debug_level
);
641 static struct attribute
*ehca_drv_attrs
[] = {
642 &driver_attr_debug_level
.attr
,
646 static struct attribute_group ehca_drv_attr_grp
= {
647 .attrs
= ehca_drv_attrs
650 static const struct attribute_group
*ehca_drv_attr_groups
[] = {
655 #define EHCA_RESOURCE_ATTR(name) \
656 static ssize_t ehca_show_##name(struct device *dev, \
657 struct device_attribute *attr, \
660 struct ehca_shca *shca; \
661 struct hipz_query_hca *rblock; \
664 shca = dev_get_drvdata(dev); \
666 rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); \
668 dev_err(dev, "Can't allocate rblock memory.\n"); \
672 if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) { \
673 dev_err(dev, "Can't query device properties\n"); \
674 ehca_free_fw_ctrlblock(rblock); \
678 data = rblock->name; \
679 ehca_free_fw_ctrlblock(rblock); \
681 if ((strcmp(#name, "num_ports") == 0) && (ehca_nr_ports == 1)) \
682 return snprintf(buf, 256, "1\n"); \
684 return snprintf(buf, 256, "%d\n", data); \
687 static DEVICE_ATTR(name, S_IRUGO, ehca_show_##name, NULL);
689 EHCA_RESOURCE_ATTR(num_ports
);
690 EHCA_RESOURCE_ATTR(hw_ver
);
691 EHCA_RESOURCE_ATTR(max_eq
);
692 EHCA_RESOURCE_ATTR(cur_eq
);
693 EHCA_RESOURCE_ATTR(max_cq
);
694 EHCA_RESOURCE_ATTR(cur_cq
);
695 EHCA_RESOURCE_ATTR(max_qp
);
696 EHCA_RESOURCE_ATTR(cur_qp
);
697 EHCA_RESOURCE_ATTR(max_mr
);
698 EHCA_RESOURCE_ATTR(cur_mr
);
699 EHCA_RESOURCE_ATTR(max_mw
);
700 EHCA_RESOURCE_ATTR(cur_mw
);
701 EHCA_RESOURCE_ATTR(max_pd
);
702 EHCA_RESOURCE_ATTR(max_ah
);
704 static ssize_t
ehca_show_adapter_handle(struct device
*dev
,
705 struct device_attribute
*attr
,
708 struct ehca_shca
*shca
= dev_get_drvdata(dev
);
710 return sprintf(buf
, "%llx\n", shca
->ipz_hca_handle
.handle
);
713 static DEVICE_ATTR(adapter_handle
, S_IRUGO
, ehca_show_adapter_handle
, NULL
);
715 static struct attribute
*ehca_dev_attrs
[] = {
716 &dev_attr_adapter_handle
.attr
,
717 &dev_attr_num_ports
.attr
,
718 &dev_attr_hw_ver
.attr
,
719 &dev_attr_max_eq
.attr
,
720 &dev_attr_cur_eq
.attr
,
721 &dev_attr_max_cq
.attr
,
722 &dev_attr_cur_cq
.attr
,
723 &dev_attr_max_qp
.attr
,
724 &dev_attr_cur_qp
.attr
,
725 &dev_attr_max_mr
.attr
,
726 &dev_attr_cur_mr
.attr
,
727 &dev_attr_max_mw
.attr
,
728 &dev_attr_cur_mw
.attr
,
729 &dev_attr_max_pd
.attr
,
730 &dev_attr_max_ah
.attr
,
734 static struct attribute_group ehca_dev_attr_grp
= {
735 .attrs
= ehca_dev_attrs
738 static int ehca_probe(struct platform_device
*dev
)
740 struct ehca_shca
*shca
;
746 handle
= of_get_property(dev
->dev
.of_node
, "ibm,hca-handle", NULL
);
748 ehca_gen_err("Cannot get eHCA handle for adapter: %s.",
749 dev
->dev
.of_node
->full_name
);
754 ehca_gen_err("Wrong eHCA handle for adapter: %s.",
755 dev
->dev
.of_node
->full_name
);
759 shca
= (struct ehca_shca
*)ib_alloc_device(sizeof(*shca
));
761 ehca_gen_err("Cannot allocate shca memory.");
765 mutex_init(&shca
->modify_mutex
);
766 atomic_set(&shca
->num_cqs
, 0);
767 atomic_set(&shca
->num_qps
, 0);
768 shca
->max_num_qps
= ehca_max_qp
;
769 shca
->max_num_cqs
= ehca_max_cq
;
771 for (i
= 0; i
< ARRAY_SIZE(shca
->sport
); i
++)
772 spin_lock_init(&shca
->sport
[i
].mod_sqp_lock
);
775 shca
->ipz_hca_handle
.handle
= *handle
;
776 dev_set_drvdata(&dev
->dev
, shca
);
778 ret
= ehca_sense_attributes(shca
);
780 ehca_gen_err("Cannot sense eHCA attributes.");
784 ret
= ehca_init_device(shca
);
786 ehca_gen_err("Cannot init ehca device struct");
790 eq_size
= 2 * shca
->max_num_cqs
+ 4 * shca
->max_num_qps
;
791 /* create event queues */
792 ret
= ehca_create_eq(shca
, &shca
->eq
, EHCA_EQ
, eq_size
);
794 ehca_err(&shca
->ib_device
, "Cannot create EQ.");
798 ret
= ehca_create_eq(shca
, &shca
->neq
, EHCA_NEQ
, 513);
800 ehca_err(&shca
->ib_device
, "Cannot create NEQ.");
804 /* create internal protection domain */
805 ibpd
= ehca_alloc_pd(&shca
->ib_device
, (void *)(-1), NULL
);
807 ehca_err(&shca
->ib_device
, "Cannot create internal PD.");
812 shca
->pd
= container_of(ibpd
, struct ehca_pd
, ib_pd
);
813 shca
->pd
->ib_pd
.device
= &shca
->ib_device
;
815 /* create internal max MR */
816 ret
= ehca_reg_internal_maxmr(shca
, shca
->pd
, &shca
->maxmr
);
819 ehca_err(&shca
->ib_device
, "Cannot create internal MR ret=%i",
824 ret
= ib_register_device(&shca
->ib_device
, NULL
);
826 ehca_err(&shca
->ib_device
,
827 "ib_register_device() failed ret=%i", ret
);
831 /* create AQP1 for port 1 */
832 if (ehca_open_aqp1
== 1) {
833 shca
->sport
[0].port_state
= IB_PORT_DOWN
;
834 ret
= ehca_create_aqp1(shca
, 1);
836 ehca_err(&shca
->ib_device
,
837 "Cannot create AQP1 for port 1.");
842 /* create AQP1 for port 2 */
843 if ((ehca_open_aqp1
== 1) && (shca
->num_ports
== 2)) {
844 shca
->sport
[1].port_state
= IB_PORT_DOWN
;
845 ret
= ehca_create_aqp1(shca
, 2);
847 ehca_err(&shca
->ib_device
,
848 "Cannot create AQP1 for port 2.");
853 ret
= sysfs_create_group(&dev
->dev
.kobj
, &ehca_dev_attr_grp
);
854 if (ret
) /* only complain; we can live without attributes */
855 ehca_err(&shca
->ib_device
,
856 "Cannot create device attributes ret=%d", ret
);
858 spin_lock_irqsave(&shca_list_lock
, flags
);
859 list_add(&shca
->shca_list
, &shca_list
);
860 spin_unlock_irqrestore(&shca_list_lock
, flags
);
865 ret
= ehca_destroy_aqp1(&shca
->sport
[0]);
867 ehca_err(&shca
->ib_device
,
868 "Cannot destroy AQP1 for port 1. ret=%i", ret
);
871 ib_unregister_device(&shca
->ib_device
);
874 ret
= ehca_dereg_internal_maxmr(shca
);
876 ehca_err(&shca
->ib_device
,
877 "Cannot destroy internal MR. ret=%x", ret
);
880 ret
= ehca_dealloc_pd(&shca
->pd
->ib_pd
);
882 ehca_err(&shca
->ib_device
,
883 "Cannot destroy internal PD. ret=%x", ret
);
886 ret
= ehca_destroy_eq(shca
, &shca
->neq
);
888 ehca_err(&shca
->ib_device
,
889 "Cannot destroy NEQ. ret=%x", ret
);
892 ret
= ehca_destroy_eq(shca
, &shca
->eq
);
894 ehca_err(&shca
->ib_device
,
895 "Cannot destroy EQ. ret=%x", ret
);
898 ib_dealloc_device(&shca
->ib_device
);
903 static int ehca_remove(struct platform_device
*dev
)
905 struct ehca_shca
*shca
= dev_get_drvdata(&dev
->dev
);
909 sysfs_remove_group(&dev
->dev
.kobj
, &ehca_dev_attr_grp
);
911 if (ehca_open_aqp1
== 1) {
913 for (i
= 0; i
< shca
->num_ports
; i
++) {
914 ret
= ehca_destroy_aqp1(&shca
->sport
[i
]);
916 ehca_err(&shca
->ib_device
,
917 "Cannot destroy AQP1 for port %x "
922 ib_unregister_device(&shca
->ib_device
);
924 ret
= ehca_dereg_internal_maxmr(shca
);
926 ehca_err(&shca
->ib_device
,
927 "Cannot destroy internal MR. ret=%i", ret
);
929 ret
= ehca_dealloc_pd(&shca
->pd
->ib_pd
);
931 ehca_err(&shca
->ib_device
,
932 "Cannot destroy internal PD. ret=%i", ret
);
934 ret
= ehca_destroy_eq(shca
, &shca
->eq
);
936 ehca_err(&shca
->ib_device
, "Cannot destroy EQ. ret=%i", ret
);
938 ret
= ehca_destroy_eq(shca
, &shca
->neq
);
940 ehca_err(&shca
->ib_device
, "Canot destroy NEQ. ret=%i", ret
);
942 ib_dealloc_device(&shca
->ib_device
);
944 spin_lock_irqsave(&shca_list_lock
, flags
);
945 list_del(&shca
->shca_list
);
946 spin_unlock_irqrestore(&shca_list_lock
, flags
);
951 static struct of_device_id ehca_device_table
[] =
955 .compatible
= "IBM,lhca",
959 MODULE_DEVICE_TABLE(of
, ehca_device_table
);
961 static struct platform_driver ehca_driver
= {
963 .remove
= ehca_remove
,
966 .owner
= THIS_MODULE
,
967 .groups
= ehca_drv_attr_groups
,
968 .of_match_table
= ehca_device_table
,
972 void ehca_poll_eqs(unsigned long data
)
974 struct ehca_shca
*shca
;
976 spin_lock(&shca_list_lock
);
977 list_for_each_entry(shca
, &shca_list
, shca_list
) {
978 if (shca
->eq
.is_initialized
) {
979 /* call deadman proc only if eq ptr does not change */
980 struct ehca_eq
*eq
= &shca
->eq
;
982 volatile u64 q_ofs
, q_ofs2
;
984 spin_lock_irqsave(&eq
->spinlock
, flags
);
985 q_ofs
= eq
->ipz_queue
.current_q_offset
;
986 spin_unlock_irqrestore(&eq
->spinlock
, flags
);
988 spin_lock_irqsave(&eq
->spinlock
, flags
);
989 q_ofs2
= eq
->ipz_queue
.current_q_offset
;
990 spin_unlock_irqrestore(&eq
->spinlock
, flags
);
992 } while (q_ofs
== q_ofs2
&& max
> 0);
994 ehca_process_eq(shca
, 0);
997 mod_timer(&poll_eqs_timer
, round_jiffies(jiffies
+ HZ
));
998 spin_unlock(&shca_list_lock
);
1001 static int ehca_mem_notifier(struct notifier_block
*nb
,
1002 unsigned long action
, void *data
)
1004 static unsigned long ehca_dmem_warn_time
;
1005 unsigned long flags
;
1008 case MEM_CANCEL_OFFLINE
:
1009 case MEM_CANCEL_ONLINE
:
1013 case MEM_GOING_ONLINE
:
1014 case MEM_GOING_OFFLINE
:
1015 /* only ok if no hca is attached to the lpar */
1016 spin_lock_irqsave(&shca_list_lock
, flags
);
1017 if (list_empty(&shca_list
)) {
1018 spin_unlock_irqrestore(&shca_list_lock
, flags
);
1021 spin_unlock_irqrestore(&shca_list_lock
, flags
);
1022 if (printk_timed_ratelimit(&ehca_dmem_warn_time
,
1024 ehca_gen_err("DMEM operations are not allowed"
1025 "in conjunction with eHCA");
1032 static struct notifier_block ehca_mem_nb
= {
1033 .notifier_call
= ehca_mem_notifier
,
1036 static int __init
ehca_module_init(void)
1040 printk(KERN_INFO
"eHCA Infiniband Device Driver "
1041 "(Version " HCAD_VERSION
")\n");
1043 ret
= ehca_create_comp_pool();
1045 ehca_gen_err("Cannot create comp pool.");
1049 ret
= ehca_create_slab_caches();
1051 ehca_gen_err("Cannot create SLAB caches");
1056 ret
= ehca_create_busmap();
1058 ehca_gen_err("Cannot create busmap.");
1062 ret
= ibmebus_register_driver(&ehca_driver
);
1064 ehca_gen_err("Cannot register eHCA device driver");
1069 ret
= register_memory_notifier(&ehca_mem_nb
);
1071 ehca_gen_err("Failed registering memory add/remove notifier");
1075 if (ehca_poll_all_eqs
!= 1) {
1076 ehca_gen_err("WARNING!!!");
1077 ehca_gen_err("It is possible to lose interrupts.");
1079 init_timer(&poll_eqs_timer
);
1080 poll_eqs_timer
.function
= ehca_poll_eqs
;
1081 poll_eqs_timer
.expires
= jiffies
+ HZ
;
1082 add_timer(&poll_eqs_timer
);
1088 ibmebus_unregister_driver(&ehca_driver
);
1091 ehca_destroy_busmap();
1094 ehca_destroy_slab_caches();
1097 ehca_destroy_comp_pool();
1101 static void __exit
ehca_module_exit(void)
1103 if (ehca_poll_all_eqs
== 1)
1104 del_timer_sync(&poll_eqs_timer
);
1106 ibmebus_unregister_driver(&ehca_driver
);
1108 unregister_memory_notifier(&ehca_mem_nb
);
1110 ehca_destroy_busmap();
1112 ehca_destroy_slab_caches();
1114 ehca_destroy_comp_pool();
1116 idr_destroy(&ehca_cq_idr
);
1117 idr_destroy(&ehca_qp_idr
);
1120 module_init(ehca_module_init
);
1121 module_exit(ehca_module_exit
);