2 * Copyright (c) 2005, 2006, 2007, 2008 Mellanox Technologies. All rights reserved.
3 * Copyright (c) 2005, 2006, 2007 Cisco Systems, Inc. All rights reserved.
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
34 #include <linux/init.h>
35 #include <linux/interrupt.h>
36 #include <linux/slab.h>
37 #include <linux/export.h>
39 #include <linux/dma-mapping.h>
41 #include <linux/mlx4/cmd.h>
42 #include <linux/cpu_rmap.h>
48 MLX4_IRQNAME_SIZE
= 32
52 MLX4_NUM_ASYNC_EQE
= 0x100,
53 MLX4_NUM_SPARE_EQE
= 0x80,
54 MLX4_EQ_ENTRY_SIZE
= 0x20
57 #define MLX4_EQ_STATUS_OK ( 0 << 28)
58 #define MLX4_EQ_STATUS_WRITE_FAIL (10 << 28)
59 #define MLX4_EQ_OWNER_SW ( 0 << 24)
60 #define MLX4_EQ_OWNER_HW ( 1 << 24)
61 #define MLX4_EQ_FLAG_EC ( 1 << 18)
62 #define MLX4_EQ_FLAG_OI ( 1 << 17)
63 #define MLX4_EQ_STATE_ARMED ( 9 << 8)
64 #define MLX4_EQ_STATE_FIRED (10 << 8)
65 #define MLX4_EQ_STATE_ALWAYS_ARMED (11 << 8)
67 #define MLX4_ASYNC_EVENT_MASK ((1ull << MLX4_EVENT_TYPE_PATH_MIG) | \
68 (1ull << MLX4_EVENT_TYPE_COMM_EST) | \
69 (1ull << MLX4_EVENT_TYPE_SQ_DRAINED) | \
70 (1ull << MLX4_EVENT_TYPE_CQ_ERROR) | \
71 (1ull << MLX4_EVENT_TYPE_WQ_CATAS_ERROR) | \
72 (1ull << MLX4_EVENT_TYPE_EEC_CATAS_ERROR) | \
73 (1ull << MLX4_EVENT_TYPE_PATH_MIG_FAILED) | \
74 (1ull << MLX4_EVENT_TYPE_WQ_INVAL_REQ_ERROR) | \
75 (1ull << MLX4_EVENT_TYPE_WQ_ACCESS_ERROR) | \
76 (1ull << MLX4_EVENT_TYPE_PORT_CHANGE) | \
77 (1ull << MLX4_EVENT_TYPE_ECC_DETECT) | \
78 (1ull << MLX4_EVENT_TYPE_SRQ_CATAS_ERROR) | \
79 (1ull << MLX4_EVENT_TYPE_SRQ_QP_LAST_WQE) | \
80 (1ull << MLX4_EVENT_TYPE_SRQ_LIMIT) | \
81 (1ull << MLX4_EVENT_TYPE_CMD) | \
82 (1ull << MLX4_EVENT_TYPE_COMM_CHANNEL) | \
83 (1ull << MLX4_EVENT_TYPE_FLR_EVENT) | \
84 (1ull << MLX4_EVENT_TYPE_FATAL_WARNING))
86 static u64
get_async_ev_mask(struct mlx4_dev
*dev
)
88 u64 async_ev_mask
= MLX4_ASYNC_EVENT_MASK
;
89 if (dev
->caps
.flags
& MLX4_DEV_CAP_FLAG_PORT_MNG_CHG_EV
)
90 async_ev_mask
|= (1ull << MLX4_EVENT_TYPE_PORT_MNG_CHG_EVENT
);
95 static void eq_set_ci(struct mlx4_eq
*eq
, int req_not
)
97 __raw_writel((__force u32
) cpu_to_be32((eq
->cons_index
& 0xffffff) |
100 /* We still want ordering, just not swabbing, so add a barrier */
104 static struct mlx4_eqe
*get_eqe(struct mlx4_eq
*eq
, u32 entry
)
106 unsigned long off
= (entry
& (eq
->nent
- 1)) * MLX4_EQ_ENTRY_SIZE
;
107 return eq
->page_list
[off
/ PAGE_SIZE
].buf
+ off
% PAGE_SIZE
;
110 static struct mlx4_eqe
*next_eqe_sw(struct mlx4_eq
*eq
)
112 struct mlx4_eqe
*eqe
= get_eqe(eq
, eq
->cons_index
);
113 return !!(eqe
->owner
& 0x80) ^ !!(eq
->cons_index
& eq
->nent
) ? NULL
: eqe
;
116 static struct mlx4_eqe
*next_slave_event_eqe(struct mlx4_slave_event_eq
*slave_eq
)
118 struct mlx4_eqe
*eqe
=
119 &slave_eq
->event_eqe
[slave_eq
->cons
& (SLAVE_EVENT_EQ_SIZE
- 1)];
120 return (!!(eqe
->owner
& 0x80) ^
121 !!(slave_eq
->cons
& SLAVE_EVENT_EQ_SIZE
)) ?
125 void mlx4_gen_slave_eqe(struct work_struct
*work
)
127 struct mlx4_mfunc_master_ctx
*master
=
128 container_of(work
, struct mlx4_mfunc_master_ctx
,
130 struct mlx4_mfunc
*mfunc
=
131 container_of(master
, struct mlx4_mfunc
, master
);
132 struct mlx4_priv
*priv
= container_of(mfunc
, struct mlx4_priv
, mfunc
);
133 struct mlx4_dev
*dev
= &priv
->dev
;
134 struct mlx4_slave_event_eq
*slave_eq
= &mfunc
->master
.slave_eq
;
135 struct mlx4_eqe
*eqe
;
139 for (eqe
= next_slave_event_eqe(slave_eq
); eqe
;
140 eqe
= next_slave_event_eqe(slave_eq
)) {
141 slave
= eqe
->slave_id
;
143 /* All active slaves need to receive the event */
144 if (slave
== ALL_SLAVES
) {
145 for (i
= 0; i
< dev
->num_slaves
; i
++) {
146 if (i
!= dev
->caps
.function
&&
147 master
->slave_state
[i
].active
)
148 if (mlx4_GEN_EQE(dev
, i
, eqe
))
149 mlx4_warn(dev
, "Failed to "
151 "for slave %d\n", i
);
154 if (mlx4_GEN_EQE(dev
, slave
, eqe
))
155 mlx4_warn(dev
, "Failed to generate event "
156 "for slave %d\n", slave
);
163 static void slave_event(struct mlx4_dev
*dev
, u8 slave
, struct mlx4_eqe
*eqe
)
165 struct mlx4_priv
*priv
= mlx4_priv(dev
);
166 struct mlx4_slave_event_eq
*slave_eq
= &priv
->mfunc
.master
.slave_eq
;
167 struct mlx4_eqe
*s_eqe
;
170 spin_lock_irqsave(&slave_eq
->event_lock
, flags
);
171 s_eqe
= &slave_eq
->event_eqe
[slave_eq
->prod
& (SLAVE_EVENT_EQ_SIZE
- 1)];
172 if ((!!(s_eqe
->owner
& 0x80)) ^
173 (!!(slave_eq
->prod
& SLAVE_EVENT_EQ_SIZE
))) {
174 mlx4_warn(dev
, "Master failed to generate an EQE for slave: %d. "
175 "No free EQE on slave events queue\n", slave
);
176 spin_unlock_irqrestore(&slave_eq
->event_lock
, flags
);
180 memcpy(s_eqe
, eqe
, sizeof(struct mlx4_eqe
) - 1);
181 s_eqe
->slave_id
= slave
;
182 /* ensure all information is written before setting the ownersip bit */
184 s_eqe
->owner
= !!(slave_eq
->prod
& SLAVE_EVENT_EQ_SIZE
) ? 0x0 : 0x80;
187 queue_work(priv
->mfunc
.master
.comm_wq
,
188 &priv
->mfunc
.master
.slave_event_work
);
189 spin_unlock_irqrestore(&slave_eq
->event_lock
, flags
);
192 static void mlx4_slave_event(struct mlx4_dev
*dev
, int slave
,
193 struct mlx4_eqe
*eqe
)
195 struct mlx4_priv
*priv
= mlx4_priv(dev
);
196 struct mlx4_slave_state
*s_slave
=
197 &priv
->mfunc
.master
.slave_state
[slave
];
199 if (!s_slave
->active
) {
200 /*mlx4_warn(dev, "Trying to pass event to inactive slave\n");*/
204 slave_event(dev
, slave
, eqe
);
207 int mlx4_gen_pkey_eqe(struct mlx4_dev
*dev
, int slave
, u8 port
)
211 struct mlx4_priv
*priv
= mlx4_priv(dev
);
212 struct mlx4_slave_state
*s_slave
= &priv
->mfunc
.master
.slave_state
[slave
];
214 if (!s_slave
->active
)
217 memset(&eqe
, 0, sizeof eqe
);
219 eqe
.type
= MLX4_EVENT_TYPE_PORT_MNG_CHG_EVENT
;
220 eqe
.subtype
= MLX4_DEV_PMC_SUBTYPE_PKEY_TABLE
;
221 eqe
.event
.port_mgmt_change
.port
= port
;
223 return mlx4_GEN_EQE(dev
, slave
, &eqe
);
225 EXPORT_SYMBOL(mlx4_gen_pkey_eqe
);
227 int mlx4_gen_guid_change_eqe(struct mlx4_dev
*dev
, int slave
, u8 port
)
231 /*don't send if we don't have the that slave */
232 if (dev
->num_vfs
< slave
)
234 memset(&eqe
, 0, sizeof eqe
);
236 eqe
.type
= MLX4_EVENT_TYPE_PORT_MNG_CHG_EVENT
;
237 eqe
.subtype
= MLX4_DEV_PMC_SUBTYPE_GUID_INFO
;
238 eqe
.event
.port_mgmt_change
.port
= port
;
240 return mlx4_GEN_EQE(dev
, slave
, &eqe
);
242 EXPORT_SYMBOL(mlx4_gen_guid_change_eqe
);
244 int mlx4_gen_port_state_change_eqe(struct mlx4_dev
*dev
, int slave
, u8 port
,
245 u8 port_subtype_change
)
249 /*don't send if we don't have the that slave */
250 if (dev
->num_vfs
< slave
)
252 memset(&eqe
, 0, sizeof eqe
);
254 eqe
.type
= MLX4_EVENT_TYPE_PORT_CHANGE
;
255 eqe
.subtype
= port_subtype_change
;
256 eqe
.event
.port_change
.port
= cpu_to_be32(port
<< 28);
258 mlx4_dbg(dev
, "%s: sending: %d to slave: %d on port: %d\n", __func__
,
259 port_subtype_change
, slave
, port
);
260 return mlx4_GEN_EQE(dev
, slave
, &eqe
);
262 EXPORT_SYMBOL(mlx4_gen_port_state_change_eqe
);
264 enum slave_port_state
mlx4_get_slave_port_state(struct mlx4_dev
*dev
, int slave
, u8 port
)
266 struct mlx4_priv
*priv
= mlx4_priv(dev
);
267 struct mlx4_slave_state
*s_state
= priv
->mfunc
.master
.slave_state
;
268 if (slave
>= dev
->num_slaves
|| port
> MLX4_MAX_PORTS
) {
269 pr_err("%s: Error: asking for slave:%d, port:%d\n",
270 __func__
, slave
, port
);
271 return SLAVE_PORT_DOWN
;
273 return s_state
[slave
].port_state
[port
];
275 EXPORT_SYMBOL(mlx4_get_slave_port_state
);
277 static int mlx4_set_slave_port_state(struct mlx4_dev
*dev
, int slave
, u8 port
,
278 enum slave_port_state state
)
280 struct mlx4_priv
*priv
= mlx4_priv(dev
);
281 struct mlx4_slave_state
*s_state
= priv
->mfunc
.master
.slave_state
;
283 if (slave
>= dev
->num_slaves
|| port
> MLX4_MAX_PORTS
|| port
== 0) {
284 pr_err("%s: Error: asking for slave:%d, port:%d\n",
285 __func__
, slave
, port
);
288 s_state
[slave
].port_state
[port
] = state
;
293 static void set_all_slave_state(struct mlx4_dev
*dev
, u8 port
, int event
)
296 enum slave_port_gen_event gen_event
;
298 for (i
= 0; i
< dev
->num_slaves
; i
++)
299 set_and_calc_slave_port_state(dev
, i
, port
, event
, &gen_event
);
301 /**************************************************************************
302 The function get as input the new event to that port,
303 and according to the prev state change the slave's port state.
305 MLX4_PORT_STATE_DEV_EVENT_PORT_DOWN,
306 MLX4_PORT_STATE_DEV_EVENT_PORT_UP
307 MLX4_PORT_STATE_IB_EVENT_GID_VALID
308 MLX4_PORT_STATE_IB_EVENT_GID_INVALID
309 ***************************************************************************/
310 int set_and_calc_slave_port_state(struct mlx4_dev
*dev
, int slave
,
312 enum slave_port_gen_event
*gen_event
)
314 struct mlx4_priv
*priv
= mlx4_priv(dev
);
315 struct mlx4_slave_state
*ctx
= NULL
;
318 enum slave_port_state cur_state
=
319 mlx4_get_slave_port_state(dev
, slave
, port
);
321 *gen_event
= SLAVE_PORT_GEN_EVENT_NONE
;
323 if (slave
>= dev
->num_slaves
|| port
> MLX4_MAX_PORTS
|| port
== 0) {
324 pr_err("%s: Error: asking for slave:%d, port:%d\n",
325 __func__
, slave
, port
);
329 ctx
= &priv
->mfunc
.master
.slave_state
[slave
];
330 spin_lock_irqsave(&ctx
->lock
, flags
);
332 mlx4_dbg(dev
, "%s: slave: %d, current state: %d new event :%d\n",
333 __func__
, slave
, cur_state
, event
);
336 case SLAVE_PORT_DOWN
:
337 if (MLX4_PORT_STATE_DEV_EVENT_PORT_UP
== event
)
338 mlx4_set_slave_port_state(dev
, slave
, port
,
341 case SLAVE_PENDING_UP
:
342 if (MLX4_PORT_STATE_DEV_EVENT_PORT_DOWN
== event
)
343 mlx4_set_slave_port_state(dev
, slave
, port
,
345 else if (MLX4_PORT_STATE_IB_PORT_STATE_EVENT_GID_VALID
== event
) {
346 mlx4_set_slave_port_state(dev
, slave
, port
,
348 *gen_event
= SLAVE_PORT_GEN_EVENT_UP
;
352 if (MLX4_PORT_STATE_DEV_EVENT_PORT_DOWN
== event
) {
353 mlx4_set_slave_port_state(dev
, slave
, port
,
355 *gen_event
= SLAVE_PORT_GEN_EVENT_DOWN
;
356 } else if (MLX4_PORT_STATE_IB_EVENT_GID_INVALID
==
358 mlx4_set_slave_port_state(dev
, slave
, port
,
360 *gen_event
= SLAVE_PORT_GEN_EVENT_DOWN
;
364 pr_err("%s: BUG!!! UNKNOWN state: "
365 "slave:%d, port:%d\n", __func__
, slave
, port
);
368 ret
= mlx4_get_slave_port_state(dev
, slave
, port
);
369 mlx4_dbg(dev
, "%s: slave: %d, current state: %d new event"
370 " :%d gen_event: %d\n",
371 __func__
, slave
, cur_state
, event
, *gen_event
);
374 spin_unlock_irqrestore(&ctx
->lock
, flags
);
378 EXPORT_SYMBOL(set_and_calc_slave_port_state
);
380 int mlx4_gen_slaves_port_mgt_ev(struct mlx4_dev
*dev
, u8 port
, int attr
)
384 memset(&eqe
, 0, sizeof eqe
);
386 eqe
.type
= MLX4_EVENT_TYPE_PORT_MNG_CHG_EVENT
;
387 eqe
.subtype
= MLX4_DEV_PMC_SUBTYPE_PORT_INFO
;
388 eqe
.event
.port_mgmt_change
.port
= port
;
389 eqe
.event
.port_mgmt_change
.params
.port_info
.changed_attr
=
390 cpu_to_be32((u32
) attr
);
392 slave_event(dev
, ALL_SLAVES
, &eqe
);
395 EXPORT_SYMBOL(mlx4_gen_slaves_port_mgt_ev
);
397 void mlx4_master_handle_slave_flr(struct work_struct
*work
)
399 struct mlx4_mfunc_master_ctx
*master
=
400 container_of(work
, struct mlx4_mfunc_master_ctx
,
401 slave_flr_event_work
);
402 struct mlx4_mfunc
*mfunc
=
403 container_of(master
, struct mlx4_mfunc
, master
);
404 struct mlx4_priv
*priv
=
405 container_of(mfunc
, struct mlx4_priv
, mfunc
);
406 struct mlx4_dev
*dev
= &priv
->dev
;
407 struct mlx4_slave_state
*slave_state
= priv
->mfunc
.master
.slave_state
;
411 mlx4_dbg(dev
, "mlx4_handle_slave_flr\n");
413 for (i
= 0 ; i
< dev
->num_slaves
; i
++) {
415 if (MLX4_COMM_CMD_FLR
== slave_state
[i
].last_cmd
) {
416 mlx4_dbg(dev
, "mlx4_handle_slave_flr: "
417 "clean slave: %d\n", i
);
419 mlx4_delete_all_resources_for_slave(dev
, i
);
420 /*return the slave to running mode*/
421 spin_lock(&priv
->mfunc
.master
.slave_state_lock
);
422 slave_state
[i
].last_cmd
= MLX4_COMM_CMD_RESET
;
423 slave_state
[i
].is_slave_going_down
= 0;
424 spin_unlock(&priv
->mfunc
.master
.slave_state_lock
);
426 err
= mlx4_cmd(dev
, 0, i
, 0, MLX4_CMD_INFORM_FLR_DONE
,
427 MLX4_CMD_TIME_CLASS_A
, MLX4_CMD_WRAPPED
);
429 mlx4_warn(dev
, "Failed to notify FW on "
430 "FLR done (slave:%d)\n", i
);
435 static int mlx4_eq_int(struct mlx4_dev
*dev
, struct mlx4_eq
*eq
)
437 struct mlx4_priv
*priv
= mlx4_priv(dev
);
438 struct mlx4_eqe
*eqe
;
446 u8 update_slave_state
;
448 enum slave_port_gen_event gen_event
;
450 while ((eqe
= next_eqe_sw(eq
))) {
452 * Make sure we read EQ entry contents after we've
453 * checked the ownership bit.
458 case MLX4_EVENT_TYPE_COMP
:
459 cqn
= be32_to_cpu(eqe
->event
.comp
.cqn
) & 0xffffff;
460 mlx4_cq_completion(dev
, cqn
);
463 case MLX4_EVENT_TYPE_PATH_MIG
:
464 case MLX4_EVENT_TYPE_COMM_EST
:
465 case MLX4_EVENT_TYPE_SQ_DRAINED
:
466 case MLX4_EVENT_TYPE_SRQ_QP_LAST_WQE
:
467 case MLX4_EVENT_TYPE_WQ_CATAS_ERROR
:
468 case MLX4_EVENT_TYPE_PATH_MIG_FAILED
:
469 case MLX4_EVENT_TYPE_WQ_INVAL_REQ_ERROR
:
470 case MLX4_EVENT_TYPE_WQ_ACCESS_ERROR
:
471 mlx4_dbg(dev
, "event %d arrived\n", eqe
->type
);
472 if (mlx4_is_master(dev
)) {
473 /* forward only to slave owning the QP */
474 ret
= mlx4_get_slave_from_resource_id(dev
,
476 be32_to_cpu(eqe
->event
.qp
.qpn
)
478 if (ret
&& ret
!= -ENOENT
) {
479 mlx4_dbg(dev
, "QP event %02x(%02x) on "
480 "EQ %d at index %u: could "
481 "not get slave id (%d)\n",
482 eqe
->type
, eqe
->subtype
,
483 eq
->eqn
, eq
->cons_index
, ret
);
487 if (!ret
&& slave
!= dev
->caps
.function
) {
488 mlx4_slave_event(dev
, slave
, eqe
);
493 mlx4_qp_event(dev
, be32_to_cpu(eqe
->event
.qp
.qpn
) &
494 0xffffff, eqe
->type
);
497 case MLX4_EVENT_TYPE_SRQ_LIMIT
:
498 mlx4_warn(dev
, "%s: MLX4_EVENT_TYPE_SRQ_LIMIT\n",
500 case MLX4_EVENT_TYPE_SRQ_CATAS_ERROR
:
501 if (mlx4_is_master(dev
)) {
502 /* forward only to slave owning the SRQ */
503 ret
= mlx4_get_slave_from_resource_id(dev
,
505 be32_to_cpu(eqe
->event
.srq
.srqn
)
508 if (ret
&& ret
!= -ENOENT
) {
509 mlx4_warn(dev
, "SRQ event %02x(%02x) "
510 "on EQ %d at index %u: could"
511 " not get slave id (%d)\n",
512 eqe
->type
, eqe
->subtype
,
513 eq
->eqn
, eq
->cons_index
, ret
);
516 mlx4_warn(dev
, "%s: slave:%d, srq_no:0x%x,"
517 " event: %02x(%02x)\n", __func__
,
519 be32_to_cpu(eqe
->event
.srq
.srqn
),
520 eqe
->type
, eqe
->subtype
);
522 if (!ret
&& slave
!= dev
->caps
.function
) {
523 mlx4_warn(dev
, "%s: sending event "
524 "%02x(%02x) to slave:%d\n",
526 eqe
->subtype
, slave
);
527 mlx4_slave_event(dev
, slave
, eqe
);
531 mlx4_srq_event(dev
, be32_to_cpu(eqe
->event
.srq
.srqn
) &
532 0xffffff, eqe
->type
);
535 case MLX4_EVENT_TYPE_CMD
:
537 be16_to_cpu(eqe
->event
.cmd
.token
),
538 eqe
->event
.cmd
.status
,
539 be64_to_cpu(eqe
->event
.cmd
.out_param
));
542 case MLX4_EVENT_TYPE_PORT_CHANGE
:
543 port
= be32_to_cpu(eqe
->event
.port_change
.port
) >> 28;
544 if (eqe
->subtype
== MLX4_PORT_CHANGE_SUBTYPE_DOWN
) {
545 mlx4_dispatch_event(dev
, MLX4_DEV_EVENT_PORT_DOWN
,
547 mlx4_priv(dev
)->sense
.do_sense_port
[port
] = 1;
548 if (!mlx4_is_master(dev
))
550 for (i
= 0; i
< dev
->num_slaves
; i
++) {
551 if (dev
->caps
.port_type
[port
] == MLX4_PORT_TYPE_ETH
) {
552 if (i
== mlx4_master_func_num(dev
))
554 mlx4_dbg(dev
, "%s: Sending MLX4_PORT_CHANGE_SUBTYPE_DOWN"
555 " to slave: %d, port:%d\n",
557 mlx4_slave_event(dev
, i
, eqe
);
558 } else { /* IB port */
559 set_and_calc_slave_port_state(dev
, i
, port
,
560 MLX4_PORT_STATE_DEV_EVENT_PORT_DOWN
,
562 /*we can be in pending state, then do not send port_down event*/
563 if (SLAVE_PORT_GEN_EVENT_DOWN
== gen_event
) {
564 if (i
== mlx4_master_func_num(dev
))
566 mlx4_slave_event(dev
, i
, eqe
);
571 mlx4_dispatch_event(dev
, MLX4_DEV_EVENT_PORT_UP
, port
);
573 mlx4_priv(dev
)->sense
.do_sense_port
[port
] = 0;
575 if (!mlx4_is_master(dev
))
577 if (dev
->caps
.port_type
[port
] == MLX4_PORT_TYPE_ETH
)
578 for (i
= 0; i
< dev
->num_slaves
; i
++) {
579 if (i
== mlx4_master_func_num(dev
))
581 mlx4_slave_event(dev
, i
, eqe
);
584 /* port-up event will be sent to a slave when the
585 * slave's alias-guid is set. This is done in alias_GUID.c
587 set_all_slave_state(dev
, port
, MLX4_DEV_EVENT_PORT_UP
);
591 case MLX4_EVENT_TYPE_CQ_ERROR
:
592 mlx4_warn(dev
, "CQ %s on CQN %06x\n",
593 eqe
->event
.cq_err
.syndrome
== 1 ?
594 "overrun" : "access violation",
595 be32_to_cpu(eqe
->event
.cq_err
.cqn
) & 0xffffff);
596 if (mlx4_is_master(dev
)) {
597 ret
= mlx4_get_slave_from_resource_id(dev
,
599 be32_to_cpu(eqe
->event
.cq_err
.cqn
)
601 if (ret
&& ret
!= -ENOENT
) {
602 mlx4_dbg(dev
, "CQ event %02x(%02x) on "
603 "EQ %d at index %u: could "
604 "not get slave id (%d)\n",
605 eqe
->type
, eqe
->subtype
,
606 eq
->eqn
, eq
->cons_index
, ret
);
610 if (!ret
&& slave
!= dev
->caps
.function
) {
611 mlx4_slave_event(dev
, slave
, eqe
);
616 be32_to_cpu(eqe
->event
.cq_err
.cqn
)
621 case MLX4_EVENT_TYPE_EQ_OVERFLOW
:
622 mlx4_warn(dev
, "EQ overrun on EQN %d\n", eq
->eqn
);
625 case MLX4_EVENT_TYPE_COMM_CHANNEL
:
626 if (!mlx4_is_master(dev
)) {
627 mlx4_warn(dev
, "Received comm channel event "
628 "for non master device\n");
631 memcpy(&priv
->mfunc
.master
.comm_arm_bit_vector
,
632 eqe
->event
.comm_channel_arm
.bit_vec
,
633 sizeof eqe
->event
.comm_channel_arm
.bit_vec
);
634 queue_work(priv
->mfunc
.master
.comm_wq
,
635 &priv
->mfunc
.master
.comm_work
);
638 case MLX4_EVENT_TYPE_FLR_EVENT
:
639 flr_slave
= be32_to_cpu(eqe
->event
.flr_event
.slave_id
);
640 if (!mlx4_is_master(dev
)) {
641 mlx4_warn(dev
, "Non-master function received"
646 mlx4_dbg(dev
, "FLR event for slave: %d\n", flr_slave
);
648 if (flr_slave
>= dev
->num_slaves
) {
650 "Got FLR for unknown function: %d\n",
652 update_slave_state
= 0;
654 update_slave_state
= 1;
656 spin_lock(&priv
->mfunc
.master
.slave_state_lock
);
657 if (update_slave_state
) {
658 priv
->mfunc
.master
.slave_state
[flr_slave
].active
= false;
659 priv
->mfunc
.master
.slave_state
[flr_slave
].last_cmd
= MLX4_COMM_CMD_FLR
;
660 priv
->mfunc
.master
.slave_state
[flr_slave
].is_slave_going_down
= 1;
662 spin_unlock(&priv
->mfunc
.master
.slave_state_lock
);
663 queue_work(priv
->mfunc
.master
.comm_wq
,
664 &priv
->mfunc
.master
.slave_flr_event_work
);
667 case MLX4_EVENT_TYPE_FATAL_WARNING
:
668 if (eqe
->subtype
== MLX4_FATAL_WARNING_SUBTYPE_WARMING
) {
669 if (mlx4_is_master(dev
))
670 for (i
= 0; i
< dev
->num_slaves
; i
++) {
671 mlx4_dbg(dev
, "%s: Sending "
672 "MLX4_FATAL_WARNING_SUBTYPE_WARMING"
673 " to slave: %d\n", __func__
, i
);
674 if (i
== dev
->caps
.function
)
676 mlx4_slave_event(dev
, i
, eqe
);
678 mlx4_err(dev
, "Temperature Threshold was reached! "
679 "Threshold: %d celsius degrees; "
680 "Current Temperature: %d\n",
681 be16_to_cpu(eqe
->event
.warming
.warning_threshold
),
682 be16_to_cpu(eqe
->event
.warming
.current_temperature
));
684 mlx4_warn(dev
, "Unhandled event FATAL WARNING (%02x), "
685 "subtype %02x on EQ %d at index %u. owner=%x, "
686 "nent=0x%x, slave=%x, ownership=%s\n",
687 eqe
->type
, eqe
->subtype
, eq
->eqn
,
688 eq
->cons_index
, eqe
->owner
, eq
->nent
,
690 !!(eqe
->owner
& 0x80) ^
691 !!(eq
->cons_index
& eq
->nent
) ? "HW" : "SW");
695 case MLX4_EVENT_TYPE_PORT_MNG_CHG_EVENT
:
696 mlx4_dispatch_event(dev
, MLX4_DEV_EVENT_PORT_MGMT_CHANGE
,
697 (unsigned long) eqe
);
700 case MLX4_EVENT_TYPE_EEC_CATAS_ERROR
:
701 case MLX4_EVENT_TYPE_ECC_DETECT
:
703 mlx4_warn(dev
, "Unhandled event %02x(%02x) on EQ %d at "
704 "index %u. owner=%x, nent=0x%x, slave=%x, "
706 eqe
->type
, eqe
->subtype
, eq
->eqn
,
707 eq
->cons_index
, eqe
->owner
, eq
->nent
,
709 !!(eqe
->owner
& 0x80) ^
710 !!(eq
->cons_index
& eq
->nent
) ? "HW" : "SW");
719 * The HCA will think the queue has overflowed if we
720 * don't tell it we've been processing events. We
721 * create our EQs with MLX4_NUM_SPARE_EQE extra
722 * entries, so we must update our consumer index at
725 if (unlikely(set_ci
>= MLX4_NUM_SPARE_EQE
)) {
736 static irqreturn_t
mlx4_interrupt(int irq
, void *dev_ptr
)
738 struct mlx4_dev
*dev
= dev_ptr
;
739 struct mlx4_priv
*priv
= mlx4_priv(dev
);
743 writel(priv
->eq_table
.clr_mask
, priv
->eq_table
.clr_int
);
745 for (i
= 0; i
< dev
->caps
.num_comp_vectors
+ 1; ++i
)
746 work
|= mlx4_eq_int(dev
, &priv
->eq_table
.eq
[i
]);
748 return IRQ_RETVAL(work
);
751 static irqreturn_t
mlx4_msi_x_interrupt(int irq
, void *eq_ptr
)
753 struct mlx4_eq
*eq
= eq_ptr
;
754 struct mlx4_dev
*dev
= eq
->dev
;
756 mlx4_eq_int(dev
, eq
);
758 /* MSI-X vectors always belong to us */
762 int mlx4_MAP_EQ_wrapper(struct mlx4_dev
*dev
, int slave
,
763 struct mlx4_vhcr
*vhcr
,
764 struct mlx4_cmd_mailbox
*inbox
,
765 struct mlx4_cmd_mailbox
*outbox
,
766 struct mlx4_cmd_info
*cmd
)
768 struct mlx4_priv
*priv
= mlx4_priv(dev
);
769 struct mlx4_slave_event_eq_info
*event_eq
=
770 priv
->mfunc
.master
.slave_state
[slave
].event_eq
;
771 u32 in_modifier
= vhcr
->in_modifier
;
772 u32 eqn
= in_modifier
& 0x1FF;
773 u64 in_param
= vhcr
->in_param
;
777 if (slave
== dev
->caps
.function
)
778 err
= mlx4_cmd(dev
, in_param
, (in_modifier
& 0x80000000) | eqn
,
779 0, MLX4_CMD_MAP_EQ
, MLX4_CMD_TIME_CLASS_B
,
782 for (i
= 0; i
< MLX4_EVENT_TYPES_NUM
; ++i
)
783 if (in_param
& (1LL << i
))
784 event_eq
[i
].eqn
= in_modifier
>> 31 ? -1 : eqn
;
789 static int mlx4_MAP_EQ(struct mlx4_dev
*dev
, u64 event_mask
, int unmap
,
792 return mlx4_cmd(dev
, event_mask
, (unmap
<< 31) | eq_num
,
793 0, MLX4_CMD_MAP_EQ
, MLX4_CMD_TIME_CLASS_B
,
797 static int mlx4_SW2HW_EQ(struct mlx4_dev
*dev
, struct mlx4_cmd_mailbox
*mailbox
,
800 return mlx4_cmd(dev
, mailbox
->dma
, eq_num
, 0,
801 MLX4_CMD_SW2HW_EQ
, MLX4_CMD_TIME_CLASS_A
,
805 static int mlx4_HW2SW_EQ(struct mlx4_dev
*dev
, struct mlx4_cmd_mailbox
*mailbox
,
808 return mlx4_cmd_box(dev
, 0, mailbox
->dma
, eq_num
,
809 0, MLX4_CMD_HW2SW_EQ
, MLX4_CMD_TIME_CLASS_A
,
813 static int mlx4_num_eq_uar(struct mlx4_dev
*dev
)
816 * Each UAR holds 4 EQ doorbells. To figure out how many UARs
817 * we need to map, take the difference of highest index and
818 * the lowest index we'll use and add 1.
820 return (dev
->caps
.num_comp_vectors
+ 1 + dev
->caps
.reserved_eqs
+
821 dev
->caps
.comp_pool
)/4 - dev
->caps
.reserved_eqs
/4 + 1;
824 static void __iomem
*mlx4_get_eq_uar(struct mlx4_dev
*dev
, struct mlx4_eq
*eq
)
826 struct mlx4_priv
*priv
= mlx4_priv(dev
);
829 index
= eq
->eqn
/ 4 - dev
->caps
.reserved_eqs
/ 4;
831 if (!priv
->eq_table
.uar_map
[index
]) {
832 priv
->eq_table
.uar_map
[index
] =
833 ioremap(pci_resource_start(dev
->pdev
, 2) +
834 ((eq
->eqn
/ 4) << PAGE_SHIFT
),
836 if (!priv
->eq_table
.uar_map
[index
]) {
837 mlx4_err(dev
, "Couldn't map EQ doorbell for EQN 0x%06x\n",
843 return priv
->eq_table
.uar_map
[index
] + 0x800 + 8 * (eq
->eqn
% 4);
846 static int mlx4_create_eq(struct mlx4_dev
*dev
, int nent
,
847 u8 intr
, struct mlx4_eq
*eq
)
849 struct mlx4_priv
*priv
= mlx4_priv(dev
);
850 struct mlx4_cmd_mailbox
*mailbox
;
851 struct mlx4_eq_context
*eq_context
;
853 u64
*dma_list
= NULL
;
860 eq
->nent
= roundup_pow_of_two(max(nent
, 2));
861 npages
= PAGE_ALIGN(eq
->nent
* MLX4_EQ_ENTRY_SIZE
) / PAGE_SIZE
;
863 eq
->page_list
= kmalloc(npages
* sizeof *eq
->page_list
,
868 for (i
= 0; i
< npages
; ++i
)
869 eq
->page_list
[i
].buf
= NULL
;
871 dma_list
= kmalloc(npages
* sizeof *dma_list
, GFP_KERNEL
);
875 mailbox
= mlx4_alloc_cmd_mailbox(dev
);
878 eq_context
= mailbox
->buf
;
880 for (i
= 0; i
< npages
; ++i
) {
881 eq
->page_list
[i
].buf
= dma_alloc_coherent(&dev
->pdev
->dev
,
882 PAGE_SIZE
, &t
, GFP_KERNEL
);
883 if (!eq
->page_list
[i
].buf
)
884 goto err_out_free_pages
;
887 eq
->page_list
[i
].map
= t
;
889 memset(eq
->page_list
[i
].buf
, 0, PAGE_SIZE
);
892 eq
->eqn
= mlx4_bitmap_alloc(&priv
->eq_table
.bitmap
);
894 goto err_out_free_pages
;
896 eq
->doorbell
= mlx4_get_eq_uar(dev
, eq
);
899 goto err_out_free_eq
;
902 err
= mlx4_mtt_init(dev
, npages
, PAGE_SHIFT
, &eq
->mtt
);
904 goto err_out_free_eq
;
906 err
= mlx4_write_mtt(dev
, &eq
->mtt
, 0, npages
, dma_list
);
908 goto err_out_free_mtt
;
910 memset(eq_context
, 0, sizeof *eq_context
);
911 eq_context
->flags
= cpu_to_be32(MLX4_EQ_STATUS_OK
|
912 MLX4_EQ_STATE_ARMED
);
913 eq_context
->log_eq_size
= ilog2(eq
->nent
);
914 eq_context
->intr
= intr
;
915 eq_context
->log_page_size
= PAGE_SHIFT
- MLX4_ICM_PAGE_SHIFT
;
917 mtt_addr
= mlx4_mtt_addr(dev
, &eq
->mtt
);
918 eq_context
->mtt_base_addr_h
= mtt_addr
>> 32;
919 eq_context
->mtt_base_addr_l
= cpu_to_be32(mtt_addr
& 0xffffffff);
921 err
= mlx4_SW2HW_EQ(dev
, mailbox
, eq
->eqn
);
923 mlx4_warn(dev
, "SW2HW_EQ failed (%d)\n", err
);
924 goto err_out_free_mtt
;
928 mlx4_free_cmd_mailbox(dev
, mailbox
);
935 mlx4_mtt_cleanup(dev
, &eq
->mtt
);
938 mlx4_bitmap_free(&priv
->eq_table
.bitmap
, eq
->eqn
);
941 for (i
= 0; i
< npages
; ++i
)
942 if (eq
->page_list
[i
].buf
)
943 dma_free_coherent(&dev
->pdev
->dev
, PAGE_SIZE
,
944 eq
->page_list
[i
].buf
,
945 eq
->page_list
[i
].map
);
947 mlx4_free_cmd_mailbox(dev
, mailbox
);
950 kfree(eq
->page_list
);
957 static void mlx4_free_eq(struct mlx4_dev
*dev
,
960 struct mlx4_priv
*priv
= mlx4_priv(dev
);
961 struct mlx4_cmd_mailbox
*mailbox
;
963 int npages
= PAGE_ALIGN(MLX4_EQ_ENTRY_SIZE
* eq
->nent
) / PAGE_SIZE
;
966 mailbox
= mlx4_alloc_cmd_mailbox(dev
);
970 err
= mlx4_HW2SW_EQ(dev
, mailbox
, eq
->eqn
);
972 mlx4_warn(dev
, "HW2SW_EQ failed (%d)\n", err
);
975 mlx4_dbg(dev
, "Dumping EQ context %02x:\n", eq
->eqn
);
976 for (i
= 0; i
< sizeof (struct mlx4_eq_context
) / 4; ++i
) {
978 pr_cont("[%02x] ", i
* 4);
979 pr_cont(" %08x", be32_to_cpup(mailbox
->buf
+ i
* 4));
980 if ((i
+ 1) % 4 == 0)
985 mlx4_mtt_cleanup(dev
, &eq
->mtt
);
986 for (i
= 0; i
< npages
; ++i
)
987 dma_free_coherent(&dev
->pdev
->dev
, PAGE_SIZE
,
988 eq
->page_list
[i
].buf
,
989 eq
->page_list
[i
].map
);
991 kfree(eq
->page_list
);
992 mlx4_bitmap_free(&priv
->eq_table
.bitmap
, eq
->eqn
);
993 mlx4_free_cmd_mailbox(dev
, mailbox
);
996 static void mlx4_free_irqs(struct mlx4_dev
*dev
)
998 struct mlx4_eq_table
*eq_table
= &mlx4_priv(dev
)->eq_table
;
999 struct mlx4_priv
*priv
= mlx4_priv(dev
);
1002 if (eq_table
->have_irq
)
1003 free_irq(dev
->pdev
->irq
, dev
);
1005 for (i
= 0; i
< dev
->caps
.num_comp_vectors
+ 1; ++i
)
1006 if (eq_table
->eq
[i
].have_irq
) {
1007 free_irq(eq_table
->eq
[i
].irq
, eq_table
->eq
+ i
);
1008 eq_table
->eq
[i
].have_irq
= 0;
1011 for (i
= 0; i
< dev
->caps
.comp_pool
; i
++) {
1013 * Freeing the assigned irq's
1014 * all bits should be 0, but we need to validate
1016 if (priv
->msix_ctl
.pool_bm
& 1ULL << i
) {
1017 /* NO need protecting*/
1018 vec
= dev
->caps
.num_comp_vectors
+ 1 + i
;
1019 free_irq(priv
->eq_table
.eq
[vec
].irq
,
1020 &priv
->eq_table
.eq
[vec
]);
1025 kfree(eq_table
->irq_names
);
1028 static int mlx4_map_clr_int(struct mlx4_dev
*dev
)
1030 struct mlx4_priv
*priv
= mlx4_priv(dev
);
1032 priv
->clr_base
= ioremap(pci_resource_start(dev
->pdev
, priv
->fw
.clr_int_bar
) +
1033 priv
->fw
.clr_int_base
, MLX4_CLR_INT_SIZE
);
1034 if (!priv
->clr_base
) {
1035 mlx4_err(dev
, "Couldn't map interrupt clear register, aborting.\n");
1042 static void mlx4_unmap_clr_int(struct mlx4_dev
*dev
)
1044 struct mlx4_priv
*priv
= mlx4_priv(dev
);
1046 iounmap(priv
->clr_base
);
1049 int mlx4_alloc_eq_table(struct mlx4_dev
*dev
)
1051 struct mlx4_priv
*priv
= mlx4_priv(dev
);
1053 priv
->eq_table
.eq
= kcalloc(dev
->caps
.num_eqs
- dev
->caps
.reserved_eqs
,
1054 sizeof *priv
->eq_table
.eq
, GFP_KERNEL
);
1055 if (!priv
->eq_table
.eq
)
1061 void mlx4_free_eq_table(struct mlx4_dev
*dev
)
1063 kfree(mlx4_priv(dev
)->eq_table
.eq
);
1066 int mlx4_init_eq_table(struct mlx4_dev
*dev
)
1068 struct mlx4_priv
*priv
= mlx4_priv(dev
);
1072 priv
->eq_table
.uar_map
= kcalloc(mlx4_num_eq_uar(dev
),
1073 sizeof *priv
->eq_table
.uar_map
,
1075 if (!priv
->eq_table
.uar_map
) {
1080 err
= mlx4_bitmap_init(&priv
->eq_table
.bitmap
, dev
->caps
.num_eqs
,
1081 dev
->caps
.num_eqs
- 1, dev
->caps
.reserved_eqs
, 0);
1085 for (i
= 0; i
< mlx4_num_eq_uar(dev
); ++i
)
1086 priv
->eq_table
.uar_map
[i
] = NULL
;
1088 if (!mlx4_is_slave(dev
)) {
1089 err
= mlx4_map_clr_int(dev
);
1091 goto err_out_bitmap
;
1093 priv
->eq_table
.clr_mask
=
1094 swab32(1 << (priv
->eq_table
.inta_pin
& 31));
1095 priv
->eq_table
.clr_int
= priv
->clr_base
+
1096 (priv
->eq_table
.inta_pin
< 32 ? 4 : 0);
1099 priv
->eq_table
.irq_names
=
1100 kmalloc(MLX4_IRQNAME_SIZE
* (dev
->caps
.num_comp_vectors
+ 1 +
1101 dev
->caps
.comp_pool
),
1103 if (!priv
->eq_table
.irq_names
) {
1105 goto err_out_bitmap
;
1108 for (i
= 0; i
< dev
->caps
.num_comp_vectors
; ++i
) {
1109 err
= mlx4_create_eq(dev
, dev
->caps
.num_cqs
-
1110 dev
->caps
.reserved_cqs
+
1112 (dev
->flags
& MLX4_FLAG_MSI_X
) ? i
: 0,
1113 &priv
->eq_table
.eq
[i
]);
1120 err
= mlx4_create_eq(dev
, MLX4_NUM_ASYNC_EQE
+ MLX4_NUM_SPARE_EQE
,
1121 (dev
->flags
& MLX4_FLAG_MSI_X
) ? dev
->caps
.num_comp_vectors
: 0,
1122 &priv
->eq_table
.eq
[dev
->caps
.num_comp_vectors
]);
1126 /*if additional completion vectors poolsize is 0 this loop will not run*/
1127 for (i
= dev
->caps
.num_comp_vectors
+ 1;
1128 i
< dev
->caps
.num_comp_vectors
+ dev
->caps
.comp_pool
+ 1; ++i
) {
1130 err
= mlx4_create_eq(dev
, dev
->caps
.num_cqs
-
1131 dev
->caps
.reserved_cqs
+
1133 (dev
->flags
& MLX4_FLAG_MSI_X
) ? i
: 0,
1134 &priv
->eq_table
.eq
[i
]);
1142 if (dev
->flags
& MLX4_FLAG_MSI_X
) {
1143 const char *eq_name
;
1145 for (i
= 0; i
< dev
->caps
.num_comp_vectors
+ 1; ++i
) {
1146 if (i
< dev
->caps
.num_comp_vectors
) {
1147 snprintf(priv
->eq_table
.irq_names
+
1148 i
* MLX4_IRQNAME_SIZE
,
1150 "mlx4-comp-%d@pci:%s", i
,
1151 pci_name(dev
->pdev
));
1153 snprintf(priv
->eq_table
.irq_names
+
1154 i
* MLX4_IRQNAME_SIZE
,
1156 "mlx4-async@pci:%s",
1157 pci_name(dev
->pdev
));
1160 eq_name
= priv
->eq_table
.irq_names
+
1161 i
* MLX4_IRQNAME_SIZE
;
1162 err
= request_irq(priv
->eq_table
.eq
[i
].irq
,
1163 mlx4_msi_x_interrupt
, 0, eq_name
,
1164 priv
->eq_table
.eq
+ i
);
1168 priv
->eq_table
.eq
[i
].have_irq
= 1;
1171 snprintf(priv
->eq_table
.irq_names
,
1174 pci_name(dev
->pdev
));
1175 err
= request_irq(dev
->pdev
->irq
, mlx4_interrupt
,
1176 IRQF_SHARED
, priv
->eq_table
.irq_names
, dev
);
1180 priv
->eq_table
.have_irq
= 1;
1183 err
= mlx4_MAP_EQ(dev
, get_async_ev_mask(dev
), 0,
1184 priv
->eq_table
.eq
[dev
->caps
.num_comp_vectors
].eqn
);
1186 mlx4_warn(dev
, "MAP_EQ for async EQ %d failed (%d)\n",
1187 priv
->eq_table
.eq
[dev
->caps
.num_comp_vectors
].eqn
, err
);
1189 for (i
= 0; i
< dev
->caps
.num_comp_vectors
+ 1; ++i
)
1190 eq_set_ci(&priv
->eq_table
.eq
[i
], 1);
1195 mlx4_free_eq(dev
, &priv
->eq_table
.eq
[dev
->caps
.num_comp_vectors
]);
1198 i
= dev
->caps
.num_comp_vectors
- 1;
1202 mlx4_free_eq(dev
, &priv
->eq_table
.eq
[i
]);
1205 if (!mlx4_is_slave(dev
))
1206 mlx4_unmap_clr_int(dev
);
1207 mlx4_free_irqs(dev
);
1210 mlx4_bitmap_cleanup(&priv
->eq_table
.bitmap
);
1213 kfree(priv
->eq_table
.uar_map
);
1218 void mlx4_cleanup_eq_table(struct mlx4_dev
*dev
)
1220 struct mlx4_priv
*priv
= mlx4_priv(dev
);
1223 mlx4_MAP_EQ(dev
, get_async_ev_mask(dev
), 1,
1224 priv
->eq_table
.eq
[dev
->caps
.num_comp_vectors
].eqn
);
1226 mlx4_free_irqs(dev
);
1228 for (i
= 0; i
< dev
->caps
.num_comp_vectors
+ dev
->caps
.comp_pool
+ 1; ++i
)
1229 mlx4_free_eq(dev
, &priv
->eq_table
.eq
[i
]);
1231 if (!mlx4_is_slave(dev
))
1232 mlx4_unmap_clr_int(dev
);
1234 for (i
= 0; i
< mlx4_num_eq_uar(dev
); ++i
)
1235 if (priv
->eq_table
.uar_map
[i
])
1236 iounmap(priv
->eq_table
.uar_map
[i
]);
1238 mlx4_bitmap_cleanup(&priv
->eq_table
.bitmap
);
1240 kfree(priv
->eq_table
.uar_map
);
1243 /* A test that verifies that we can accept interrupts on all
1244 * the irq vectors of the device.
1245 * Interrupts are checked using the NOP command.
1247 int mlx4_test_interrupts(struct mlx4_dev
*dev
)
1249 struct mlx4_priv
*priv
= mlx4_priv(dev
);
1253 err
= mlx4_NOP(dev
);
1254 /* When not in MSI_X, there is only one irq to check */
1255 if (!(dev
->flags
& MLX4_FLAG_MSI_X
) || mlx4_is_slave(dev
))
1258 /* A loop over all completion vectors, for each vector we will check
1259 * whether it works by mapping command completions to that vector
1260 * and performing a NOP command
1262 for(i
= 0; !err
&& (i
< dev
->caps
.num_comp_vectors
); ++i
) {
1263 /* Temporary use polling for command completions */
1264 mlx4_cmd_use_polling(dev
);
1266 /* Map the new eq to handle all asyncronous events */
1267 err
= mlx4_MAP_EQ(dev
, get_async_ev_mask(dev
), 0,
1268 priv
->eq_table
.eq
[i
].eqn
);
1270 mlx4_warn(dev
, "Failed mapping eq for interrupt test\n");
1271 mlx4_cmd_use_events(dev
);
1275 /* Go back to using events */
1276 mlx4_cmd_use_events(dev
);
1277 err
= mlx4_NOP(dev
);
1280 /* Return to default */
1281 mlx4_MAP_EQ(dev
, get_async_ev_mask(dev
), 0,
1282 priv
->eq_table
.eq
[dev
->caps
.num_comp_vectors
].eqn
);
1285 EXPORT_SYMBOL(mlx4_test_interrupts
);
1287 int mlx4_assign_eq(struct mlx4_dev
*dev
, char *name
, struct cpu_rmap
*rmap
,
1291 struct mlx4_priv
*priv
= mlx4_priv(dev
);
1292 int vec
= 0, err
= 0, i
;
1294 mutex_lock(&priv
->msix_ctl
.pool_lock
);
1295 for (i
= 0; !vec
&& i
< dev
->caps
.comp_pool
; i
++) {
1296 if (~priv
->msix_ctl
.pool_bm
& 1ULL << i
) {
1297 priv
->msix_ctl
.pool_bm
|= 1ULL << i
;
1298 vec
= dev
->caps
.num_comp_vectors
+ 1 + i
;
1299 snprintf(priv
->eq_table
.irq_names
+
1300 vec
* MLX4_IRQNAME_SIZE
,
1301 MLX4_IRQNAME_SIZE
, "%s", name
);
1302 #ifdef CONFIG_RFS_ACCEL
1304 err
= irq_cpu_rmap_add(rmap
,
1305 priv
->eq_table
.eq
[vec
].irq
);
1307 mlx4_warn(dev
, "Failed adding irq rmap\n");
1310 err
= request_irq(priv
->eq_table
.eq
[vec
].irq
,
1311 mlx4_msi_x_interrupt
, 0,
1312 &priv
->eq_table
.irq_names
[vec
<<5],
1313 priv
->eq_table
.eq
+ vec
);
1315 /*zero out bit by fliping it*/
1316 priv
->msix_ctl
.pool_bm
^= 1 << i
;
1319 /*we dont want to break here*/
1321 eq_set_ci(&priv
->eq_table
.eq
[vec
], 1);
1324 mutex_unlock(&priv
->msix_ctl
.pool_lock
);
1330 err
= (i
== dev
->caps
.comp_pool
) ? -ENOSPC
: err
;
1334 EXPORT_SYMBOL(mlx4_assign_eq
);
1336 void mlx4_release_eq(struct mlx4_dev
*dev
, int vec
)
1338 struct mlx4_priv
*priv
= mlx4_priv(dev
);
1340 int i
= vec
- dev
->caps
.num_comp_vectors
- 1;
1342 if (likely(i
>= 0)) {
1343 /*sanity check , making sure were not trying to free irq's
1344 Belonging to a legacy EQ*/
1345 mutex_lock(&priv
->msix_ctl
.pool_lock
);
1346 if (priv
->msix_ctl
.pool_bm
& 1ULL << i
) {
1347 free_irq(priv
->eq_table
.eq
[vec
].irq
,
1348 &priv
->eq_table
.eq
[vec
]);
1349 priv
->msix_ctl
.pool_bm
&= ~(1ULL << i
);
1351 mutex_unlock(&priv
->msix_ctl
.pool_lock
);
1355 EXPORT_SYMBOL(mlx4_release_eq
);