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/interrupt.h>
35 #include <linux/slab.h>
36 #include <linux/export.h>
38 #include <linux/dma-mapping.h>
40 #include <linux/mlx4/cmd.h>
41 #include <linux/cpu_rmap.h>
47 MLX4_IRQNAME_SIZE
= 32
51 MLX4_NUM_ASYNC_EQE
= 0x100,
52 MLX4_NUM_SPARE_EQE
= 0x80,
53 MLX4_EQ_ENTRY_SIZE
= 0x20
56 #define MLX4_EQ_STATUS_OK ( 0 << 28)
57 #define MLX4_EQ_STATUS_WRITE_FAIL (10 << 28)
58 #define MLX4_EQ_OWNER_SW ( 0 << 24)
59 #define MLX4_EQ_OWNER_HW ( 1 << 24)
60 #define MLX4_EQ_FLAG_EC ( 1 << 18)
61 #define MLX4_EQ_FLAG_OI ( 1 << 17)
62 #define MLX4_EQ_STATE_ARMED ( 9 << 8)
63 #define MLX4_EQ_STATE_FIRED (10 << 8)
64 #define MLX4_EQ_STATE_ALWAYS_ARMED (11 << 8)
66 #define MLX4_ASYNC_EVENT_MASK ((1ull << MLX4_EVENT_TYPE_PATH_MIG) | \
67 (1ull << MLX4_EVENT_TYPE_COMM_EST) | \
68 (1ull << MLX4_EVENT_TYPE_SQ_DRAINED) | \
69 (1ull << MLX4_EVENT_TYPE_CQ_ERROR) | \
70 (1ull << MLX4_EVENT_TYPE_WQ_CATAS_ERROR) | \
71 (1ull << MLX4_EVENT_TYPE_EEC_CATAS_ERROR) | \
72 (1ull << MLX4_EVENT_TYPE_PATH_MIG_FAILED) | \
73 (1ull << MLX4_EVENT_TYPE_WQ_INVAL_REQ_ERROR) | \
74 (1ull << MLX4_EVENT_TYPE_WQ_ACCESS_ERROR) | \
75 (1ull << MLX4_EVENT_TYPE_PORT_CHANGE) | \
76 (1ull << MLX4_EVENT_TYPE_ECC_DETECT) | \
77 (1ull << MLX4_EVENT_TYPE_SRQ_CATAS_ERROR) | \
78 (1ull << MLX4_EVENT_TYPE_SRQ_QP_LAST_WQE) | \
79 (1ull << MLX4_EVENT_TYPE_SRQ_LIMIT) | \
80 (1ull << MLX4_EVENT_TYPE_CMD) | \
81 (1ull << MLX4_EVENT_TYPE_OP_REQUIRED) | \
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
);
91 if (dev
->caps
.flags2
& MLX4_DEV_CAP_FLAG2_RECOVERABLE_ERROR_EVENT
)
92 async_ev_mask
|= (1ull << MLX4_EVENT_TYPE_RECOVERABLE_ERROR_EVENT
);
97 static void eq_set_ci(struct mlx4_eq
*eq
, int req_not
)
99 __raw_writel((__force u32
) cpu_to_be32((eq
->cons_index
& 0xffffff) |
102 /* We still want ordering, just not swabbing, so add a barrier */
106 static struct mlx4_eqe
*get_eqe(struct mlx4_eq
*eq
, u32 entry
, u8 eqe_factor
,
109 /* (entry & (eq->nent - 1)) gives us a cyclic array */
110 unsigned long offset
= (entry
& (eq
->nent
- 1)) * eqe_size
;
111 /* CX3 is capable of extending the EQE from 32 to 64 bytes with
112 * strides of 64B,128B and 256B.
113 * When 64B EQE is used, the first (in the lower addresses)
114 * 32 bytes in the 64 byte EQE are reserved and the next 32 bytes
115 * contain the legacy EQE information.
116 * In all other cases, the first 32B contains the legacy EQE info.
118 return eq
->page_list
[offset
/ PAGE_SIZE
].buf
+ (offset
+ (eqe_factor
? MLX4_EQ_ENTRY_SIZE
: 0)) % PAGE_SIZE
;
121 static struct mlx4_eqe
*next_eqe_sw(struct mlx4_eq
*eq
, u8 eqe_factor
, u8 size
)
123 struct mlx4_eqe
*eqe
= get_eqe(eq
, eq
->cons_index
, eqe_factor
, size
);
124 return !!(eqe
->owner
& 0x80) ^ !!(eq
->cons_index
& eq
->nent
) ? NULL
: eqe
;
127 static struct mlx4_eqe
*next_slave_event_eqe(struct mlx4_slave_event_eq
*slave_eq
)
129 struct mlx4_eqe
*eqe
=
130 &slave_eq
->event_eqe
[slave_eq
->cons
& (SLAVE_EVENT_EQ_SIZE
- 1)];
131 return (!!(eqe
->owner
& 0x80) ^
132 !!(slave_eq
->cons
& SLAVE_EVENT_EQ_SIZE
)) ?
136 void mlx4_gen_slave_eqe(struct work_struct
*work
)
138 struct mlx4_mfunc_master_ctx
*master
=
139 container_of(work
, struct mlx4_mfunc_master_ctx
,
141 struct mlx4_mfunc
*mfunc
=
142 container_of(master
, struct mlx4_mfunc
, master
);
143 struct mlx4_priv
*priv
= container_of(mfunc
, struct mlx4_priv
, mfunc
);
144 struct mlx4_dev
*dev
= &priv
->dev
;
145 struct mlx4_slave_event_eq
*slave_eq
= &mfunc
->master
.slave_eq
;
146 struct mlx4_eqe
*eqe
;
150 for (eqe
= next_slave_event_eqe(slave_eq
); eqe
;
151 eqe
= next_slave_event_eqe(slave_eq
)) {
152 slave
= eqe
->slave_id
;
154 /* All active slaves need to receive the event */
155 if (slave
== ALL_SLAVES
) {
156 for (i
= 0; i
<= dev
->persist
->num_vfs
; i
++) {
157 if (mlx4_GEN_EQE(dev
, i
, eqe
))
158 mlx4_warn(dev
, "Failed to generate event for slave %d\n",
162 if (mlx4_GEN_EQE(dev
, slave
, eqe
))
163 mlx4_warn(dev
, "Failed to generate event for slave %d\n",
171 static void slave_event(struct mlx4_dev
*dev
, u8 slave
, struct mlx4_eqe
*eqe
)
173 struct mlx4_priv
*priv
= mlx4_priv(dev
);
174 struct mlx4_slave_event_eq
*slave_eq
= &priv
->mfunc
.master
.slave_eq
;
175 struct mlx4_eqe
*s_eqe
;
178 spin_lock_irqsave(&slave_eq
->event_lock
, flags
);
179 s_eqe
= &slave_eq
->event_eqe
[slave_eq
->prod
& (SLAVE_EVENT_EQ_SIZE
- 1)];
180 if ((!!(s_eqe
->owner
& 0x80)) ^
181 (!!(slave_eq
->prod
& SLAVE_EVENT_EQ_SIZE
))) {
182 mlx4_warn(dev
, "Master failed to generate an EQE for slave: %d. No free EQE on slave events queue\n",
184 spin_unlock_irqrestore(&slave_eq
->event_lock
, flags
);
188 memcpy(s_eqe
, eqe
, dev
->caps
.eqe_size
- 1);
189 s_eqe
->slave_id
= slave
;
190 /* ensure all information is written before setting the ownersip bit */
192 s_eqe
->owner
= !!(slave_eq
->prod
& SLAVE_EVENT_EQ_SIZE
) ? 0x0 : 0x80;
195 queue_work(priv
->mfunc
.master
.comm_wq
,
196 &priv
->mfunc
.master
.slave_event_work
);
197 spin_unlock_irqrestore(&slave_eq
->event_lock
, flags
);
200 static void mlx4_slave_event(struct mlx4_dev
*dev
, int slave
,
201 struct mlx4_eqe
*eqe
)
203 struct mlx4_priv
*priv
= mlx4_priv(dev
);
205 if (slave
< 0 || slave
> dev
->persist
->num_vfs
||
206 slave
== dev
->caps
.function
||
207 !priv
->mfunc
.master
.slave_state
[slave
].active
)
210 slave_event(dev
, slave
, eqe
);
213 int mlx4_gen_pkey_eqe(struct mlx4_dev
*dev
, int slave
, u8 port
)
217 struct mlx4_priv
*priv
= mlx4_priv(dev
);
218 struct mlx4_slave_state
*s_slave
= &priv
->mfunc
.master
.slave_state
[slave
];
220 if (!s_slave
->active
)
223 memset(&eqe
, 0, sizeof eqe
);
225 eqe
.type
= MLX4_EVENT_TYPE_PORT_MNG_CHG_EVENT
;
226 eqe
.subtype
= MLX4_DEV_PMC_SUBTYPE_PKEY_TABLE
;
227 eqe
.event
.port_mgmt_change
.port
= port
;
229 return mlx4_GEN_EQE(dev
, slave
, &eqe
);
231 EXPORT_SYMBOL(mlx4_gen_pkey_eqe
);
233 int mlx4_gen_guid_change_eqe(struct mlx4_dev
*dev
, int slave
, u8 port
)
237 /*don't send if we don't have the that slave */
238 if (dev
->persist
->num_vfs
< slave
)
240 memset(&eqe
, 0, sizeof eqe
);
242 eqe
.type
= MLX4_EVENT_TYPE_PORT_MNG_CHG_EVENT
;
243 eqe
.subtype
= MLX4_DEV_PMC_SUBTYPE_GUID_INFO
;
244 eqe
.event
.port_mgmt_change
.port
= port
;
246 return mlx4_GEN_EQE(dev
, slave
, &eqe
);
248 EXPORT_SYMBOL(mlx4_gen_guid_change_eqe
);
250 int mlx4_gen_port_state_change_eqe(struct mlx4_dev
*dev
, int slave
, u8 port
,
251 u8 port_subtype_change
)
255 /*don't send if we don't have the that slave */
256 if (dev
->persist
->num_vfs
< slave
)
258 memset(&eqe
, 0, sizeof eqe
);
260 eqe
.type
= MLX4_EVENT_TYPE_PORT_CHANGE
;
261 eqe
.subtype
= port_subtype_change
;
262 eqe
.event
.port_change
.port
= cpu_to_be32(port
<< 28);
264 mlx4_dbg(dev
, "%s: sending: %d to slave: %d on port: %d\n", __func__
,
265 port_subtype_change
, slave
, port
);
266 return mlx4_GEN_EQE(dev
, slave
, &eqe
);
268 EXPORT_SYMBOL(mlx4_gen_port_state_change_eqe
);
270 enum slave_port_state
mlx4_get_slave_port_state(struct mlx4_dev
*dev
, int slave
, u8 port
)
272 struct mlx4_priv
*priv
= mlx4_priv(dev
);
273 struct mlx4_slave_state
*s_state
= priv
->mfunc
.master
.slave_state
;
274 struct mlx4_active_ports actv_ports
= mlx4_get_active_ports(dev
, slave
);
276 if (slave
>= dev
->num_slaves
|| port
> dev
->caps
.num_ports
||
277 port
<= 0 || !test_bit(port
- 1, actv_ports
.ports
)) {
278 pr_err("%s: Error: asking for slave:%d, port:%d\n",
279 __func__
, slave
, port
);
280 return SLAVE_PORT_DOWN
;
282 return s_state
[slave
].port_state
[port
];
284 EXPORT_SYMBOL(mlx4_get_slave_port_state
);
286 static int mlx4_set_slave_port_state(struct mlx4_dev
*dev
, int slave
, u8 port
,
287 enum slave_port_state state
)
289 struct mlx4_priv
*priv
= mlx4_priv(dev
);
290 struct mlx4_slave_state
*s_state
= priv
->mfunc
.master
.slave_state
;
291 struct mlx4_active_ports actv_ports
= mlx4_get_active_ports(dev
, slave
);
293 if (slave
>= dev
->num_slaves
|| port
> dev
->caps
.num_ports
||
294 port
<= 0 || !test_bit(port
- 1, actv_ports
.ports
)) {
295 pr_err("%s: Error: asking for slave:%d, port:%d\n",
296 __func__
, slave
, port
);
299 s_state
[slave
].port_state
[port
] = state
;
304 static void set_all_slave_state(struct mlx4_dev
*dev
, u8 port
, int event
)
307 enum slave_port_gen_event gen_event
;
308 struct mlx4_slaves_pport slaves_pport
= mlx4_phys_to_slaves_pport(dev
,
311 for (i
= 0; i
< dev
->persist
->num_vfs
+ 1; i
++)
312 if (test_bit(i
, slaves_pport
.slaves
))
313 set_and_calc_slave_port_state(dev
, i
, port
,
316 /**************************************************************************
317 The function get as input the new event to that port,
318 and according to the prev state change the slave's port state.
320 MLX4_PORT_STATE_DEV_EVENT_PORT_DOWN,
321 MLX4_PORT_STATE_DEV_EVENT_PORT_UP
322 MLX4_PORT_STATE_IB_EVENT_GID_VALID
323 MLX4_PORT_STATE_IB_EVENT_GID_INVALID
324 ***************************************************************************/
325 int set_and_calc_slave_port_state(struct mlx4_dev
*dev
, int slave
,
327 enum slave_port_gen_event
*gen_event
)
329 struct mlx4_priv
*priv
= mlx4_priv(dev
);
330 struct mlx4_slave_state
*ctx
= NULL
;
333 struct mlx4_active_ports actv_ports
= mlx4_get_active_ports(dev
, slave
);
334 enum slave_port_state cur_state
=
335 mlx4_get_slave_port_state(dev
, slave
, port
);
337 *gen_event
= SLAVE_PORT_GEN_EVENT_NONE
;
339 if (slave
>= dev
->num_slaves
|| port
> dev
->caps
.num_ports
||
340 port
<= 0 || !test_bit(port
- 1, actv_ports
.ports
)) {
341 pr_err("%s: Error: asking for slave:%d, port:%d\n",
342 __func__
, slave
, port
);
346 ctx
= &priv
->mfunc
.master
.slave_state
[slave
];
347 spin_lock_irqsave(&ctx
->lock
, flags
);
350 case SLAVE_PORT_DOWN
:
351 if (MLX4_PORT_STATE_DEV_EVENT_PORT_UP
== event
)
352 mlx4_set_slave_port_state(dev
, slave
, port
,
355 case SLAVE_PENDING_UP
:
356 if (MLX4_PORT_STATE_DEV_EVENT_PORT_DOWN
== event
)
357 mlx4_set_slave_port_state(dev
, slave
, port
,
359 else if (MLX4_PORT_STATE_IB_PORT_STATE_EVENT_GID_VALID
== event
) {
360 mlx4_set_slave_port_state(dev
, slave
, port
,
362 *gen_event
= SLAVE_PORT_GEN_EVENT_UP
;
366 if (MLX4_PORT_STATE_DEV_EVENT_PORT_DOWN
== event
) {
367 mlx4_set_slave_port_state(dev
, slave
, port
,
369 *gen_event
= SLAVE_PORT_GEN_EVENT_DOWN
;
370 } else if (MLX4_PORT_STATE_IB_EVENT_GID_INVALID
==
372 mlx4_set_slave_port_state(dev
, slave
, port
,
374 *gen_event
= SLAVE_PORT_GEN_EVENT_DOWN
;
378 pr_err("%s: BUG!!! UNKNOWN state: slave:%d, port:%d\n",
379 __func__
, slave
, port
);
382 ret
= mlx4_get_slave_port_state(dev
, slave
, port
);
385 spin_unlock_irqrestore(&ctx
->lock
, flags
);
389 EXPORT_SYMBOL(set_and_calc_slave_port_state
);
391 int mlx4_gen_slaves_port_mgt_ev(struct mlx4_dev
*dev
, u8 port
, int attr
)
395 memset(&eqe
, 0, sizeof eqe
);
397 eqe
.type
= MLX4_EVENT_TYPE_PORT_MNG_CHG_EVENT
;
398 eqe
.subtype
= MLX4_DEV_PMC_SUBTYPE_PORT_INFO
;
399 eqe
.event
.port_mgmt_change
.port
= port
;
400 eqe
.event
.port_mgmt_change
.params
.port_info
.changed_attr
=
401 cpu_to_be32((u32
) attr
);
403 slave_event(dev
, ALL_SLAVES
, &eqe
);
406 EXPORT_SYMBOL(mlx4_gen_slaves_port_mgt_ev
);
408 void mlx4_master_handle_slave_flr(struct work_struct
*work
)
410 struct mlx4_mfunc_master_ctx
*master
=
411 container_of(work
, struct mlx4_mfunc_master_ctx
,
412 slave_flr_event_work
);
413 struct mlx4_mfunc
*mfunc
=
414 container_of(master
, struct mlx4_mfunc
, master
);
415 struct mlx4_priv
*priv
=
416 container_of(mfunc
, struct mlx4_priv
, mfunc
);
417 struct mlx4_dev
*dev
= &priv
->dev
;
418 struct mlx4_slave_state
*slave_state
= priv
->mfunc
.master
.slave_state
;
423 mlx4_dbg(dev
, "mlx4_handle_slave_flr\n");
425 for (i
= 0 ; i
< dev
->num_slaves
; i
++) {
427 if (MLX4_COMM_CMD_FLR
== slave_state
[i
].last_cmd
) {
428 mlx4_dbg(dev
, "mlx4_handle_slave_flr: clean slave: %d\n",
430 /* In case of 'Reset flow' FLR can be generated for
431 * a slave before mlx4_load_one is done.
432 * make sure interface is up before trying to delete
433 * slave resources which weren't allocated yet.
435 if (dev
->persist
->interface_state
&
436 MLX4_INTERFACE_STATE_UP
)
437 mlx4_delete_all_resources_for_slave(dev
, i
);
438 /*return the slave to running mode*/
439 spin_lock_irqsave(&priv
->mfunc
.master
.slave_state_lock
, flags
);
440 slave_state
[i
].last_cmd
= MLX4_COMM_CMD_RESET
;
441 slave_state
[i
].is_slave_going_down
= 0;
442 spin_unlock_irqrestore(&priv
->mfunc
.master
.slave_state_lock
, flags
);
444 err
= mlx4_cmd(dev
, 0, i
, 0, MLX4_CMD_INFORM_FLR_DONE
,
445 MLX4_CMD_TIME_CLASS_A
, MLX4_CMD_WRAPPED
);
447 mlx4_warn(dev
, "Failed to notify FW on FLR done (slave:%d)\n",
453 static int mlx4_eq_int(struct mlx4_dev
*dev
, struct mlx4_eq
*eq
)
455 struct mlx4_priv
*priv
= mlx4_priv(dev
);
456 struct mlx4_eqe
*eqe
;
464 u8 update_slave_state
;
466 enum slave_port_gen_event gen_event
;
468 struct mlx4_vport_state
*s_info
;
469 int eqe_size
= dev
->caps
.eqe_size
;
471 while ((eqe
= next_eqe_sw(eq
, dev
->caps
.eqe_factor
, eqe_size
))) {
473 * Make sure we read EQ entry contents after we've
474 * checked the ownership bit.
479 case MLX4_EVENT_TYPE_COMP
:
480 cqn
= be32_to_cpu(eqe
->event
.comp
.cqn
) & 0xffffff;
481 mlx4_cq_completion(dev
, cqn
);
484 case MLX4_EVENT_TYPE_PATH_MIG
:
485 case MLX4_EVENT_TYPE_COMM_EST
:
486 case MLX4_EVENT_TYPE_SQ_DRAINED
:
487 case MLX4_EVENT_TYPE_SRQ_QP_LAST_WQE
:
488 case MLX4_EVENT_TYPE_WQ_CATAS_ERROR
:
489 case MLX4_EVENT_TYPE_PATH_MIG_FAILED
:
490 case MLX4_EVENT_TYPE_WQ_INVAL_REQ_ERROR
:
491 case MLX4_EVENT_TYPE_WQ_ACCESS_ERROR
:
492 mlx4_dbg(dev
, "event %d arrived\n", eqe
->type
);
493 if (mlx4_is_master(dev
)) {
494 /* forward only to slave owning the QP */
495 ret
= mlx4_get_slave_from_resource_id(dev
,
497 be32_to_cpu(eqe
->event
.qp
.qpn
)
499 if (ret
&& ret
!= -ENOENT
) {
500 mlx4_dbg(dev
, "QP event %02x(%02x) on EQ %d at index %u: could not get slave id (%d)\n",
501 eqe
->type
, eqe
->subtype
,
502 eq
->eqn
, eq
->cons_index
, ret
);
506 if (!ret
&& slave
!= dev
->caps
.function
) {
507 mlx4_slave_event(dev
, slave
, eqe
);
512 mlx4_qp_event(dev
, be32_to_cpu(eqe
->event
.qp
.qpn
) &
513 0xffffff, eqe
->type
);
516 case MLX4_EVENT_TYPE_SRQ_LIMIT
:
517 mlx4_dbg(dev
, "%s: MLX4_EVENT_TYPE_SRQ_LIMIT\n",
519 case MLX4_EVENT_TYPE_SRQ_CATAS_ERROR
:
520 if (mlx4_is_master(dev
)) {
521 /* forward only to slave owning the SRQ */
522 ret
= mlx4_get_slave_from_resource_id(dev
,
524 be32_to_cpu(eqe
->event
.srq
.srqn
)
527 if (ret
&& ret
!= -ENOENT
) {
528 mlx4_warn(dev
, "SRQ event %02x(%02x) on EQ %d at index %u: could not get slave id (%d)\n",
529 eqe
->type
, eqe
->subtype
,
530 eq
->eqn
, eq
->cons_index
, ret
);
533 mlx4_warn(dev
, "%s: slave:%d, srq_no:0x%x, event: %02x(%02x)\n",
535 be32_to_cpu(eqe
->event
.srq
.srqn
),
536 eqe
->type
, eqe
->subtype
);
538 if (!ret
&& slave
!= dev
->caps
.function
) {
539 mlx4_warn(dev
, "%s: sending event %02x(%02x) to slave:%d\n",
541 eqe
->subtype
, slave
);
542 mlx4_slave_event(dev
, slave
, eqe
);
546 mlx4_srq_event(dev
, be32_to_cpu(eqe
->event
.srq
.srqn
) &
547 0xffffff, eqe
->type
);
550 case MLX4_EVENT_TYPE_CMD
:
552 be16_to_cpu(eqe
->event
.cmd
.token
),
553 eqe
->event
.cmd
.status
,
554 be64_to_cpu(eqe
->event
.cmd
.out_param
));
557 case MLX4_EVENT_TYPE_PORT_CHANGE
: {
558 struct mlx4_slaves_pport slaves_port
;
559 port
= be32_to_cpu(eqe
->event
.port_change
.port
) >> 28;
560 slaves_port
= mlx4_phys_to_slaves_pport(dev
, port
);
561 if (eqe
->subtype
== MLX4_PORT_CHANGE_SUBTYPE_DOWN
) {
562 mlx4_dispatch_event(dev
, MLX4_DEV_EVENT_PORT_DOWN
,
564 mlx4_priv(dev
)->sense
.do_sense_port
[port
] = 1;
565 if (!mlx4_is_master(dev
))
567 for (i
= 0; i
< dev
->persist
->num_vfs
+ 1;
569 if (!test_bit(i
, slaves_port
.slaves
))
571 if (dev
->caps
.port_type
[port
] == MLX4_PORT_TYPE_ETH
) {
572 if (i
== mlx4_master_func_num(dev
))
574 mlx4_dbg(dev
, "%s: Sending MLX4_PORT_CHANGE_SUBTYPE_DOWN to slave: %d, port:%d\n",
576 s_info
= &priv
->mfunc
.master
.vf_oper
[slave
].vport
[port
].state
;
577 if (IFLA_VF_LINK_STATE_AUTO
== s_info
->link_state
) {
578 eqe
->event
.port_change
.port
=
580 (be32_to_cpu(eqe
->event
.port_change
.port
) & 0xFFFFFFF)
581 | (mlx4_phys_to_slave_port(dev
, i
, port
) << 28));
582 mlx4_slave_event(dev
, i
, eqe
);
584 } else { /* IB port */
585 set_and_calc_slave_port_state(dev
, i
, port
,
586 MLX4_PORT_STATE_DEV_EVENT_PORT_DOWN
,
588 /*we can be in pending state, then do not send port_down event*/
589 if (SLAVE_PORT_GEN_EVENT_DOWN
== gen_event
) {
590 if (i
== mlx4_master_func_num(dev
))
592 mlx4_slave_event(dev
, i
, eqe
);
597 mlx4_dispatch_event(dev
, MLX4_DEV_EVENT_PORT_UP
, port
);
599 mlx4_priv(dev
)->sense
.do_sense_port
[port
] = 0;
601 if (!mlx4_is_master(dev
))
603 if (dev
->caps
.port_type
[port
] == MLX4_PORT_TYPE_ETH
)
605 i
< dev
->persist
->num_vfs
+ 1;
607 if (!test_bit(i
, slaves_port
.slaves
))
609 if (i
== mlx4_master_func_num(dev
))
611 s_info
= &priv
->mfunc
.master
.vf_oper
[slave
].vport
[port
].state
;
612 if (IFLA_VF_LINK_STATE_AUTO
== s_info
->link_state
) {
613 eqe
->event
.port_change
.port
=
615 (be32_to_cpu(eqe
->event
.port_change
.port
) & 0xFFFFFFF)
616 | (mlx4_phys_to_slave_port(dev
, i
, port
) << 28));
617 mlx4_slave_event(dev
, i
, eqe
);
621 /* port-up event will be sent to a slave when the
622 * slave's alias-guid is set. This is done in alias_GUID.c
624 set_all_slave_state(dev
, port
, MLX4_DEV_EVENT_PORT_UP
);
629 case MLX4_EVENT_TYPE_CQ_ERROR
:
630 mlx4_warn(dev
, "CQ %s on CQN %06x\n",
631 eqe
->event
.cq_err
.syndrome
== 1 ?
632 "overrun" : "access violation",
633 be32_to_cpu(eqe
->event
.cq_err
.cqn
) & 0xffffff);
634 if (mlx4_is_master(dev
)) {
635 ret
= mlx4_get_slave_from_resource_id(dev
,
637 be32_to_cpu(eqe
->event
.cq_err
.cqn
)
639 if (ret
&& ret
!= -ENOENT
) {
640 mlx4_dbg(dev
, "CQ event %02x(%02x) on EQ %d at index %u: could not get slave id (%d)\n",
641 eqe
->type
, eqe
->subtype
,
642 eq
->eqn
, eq
->cons_index
, ret
);
646 if (!ret
&& slave
!= dev
->caps
.function
) {
647 mlx4_slave_event(dev
, slave
, eqe
);
652 be32_to_cpu(eqe
->event
.cq_err
.cqn
)
657 case MLX4_EVENT_TYPE_EQ_OVERFLOW
:
658 mlx4_warn(dev
, "EQ overrun on EQN %d\n", eq
->eqn
);
661 case MLX4_EVENT_TYPE_OP_REQUIRED
:
662 atomic_inc(&priv
->opreq_count
);
663 /* FW commands can't be executed from interrupt context
664 * working in deferred task
666 queue_work(mlx4_wq
, &priv
->opreq_task
);
669 case MLX4_EVENT_TYPE_COMM_CHANNEL
:
670 if (!mlx4_is_master(dev
)) {
671 mlx4_warn(dev
, "Received comm channel event for non master device\n");
674 memcpy(&priv
->mfunc
.master
.comm_arm_bit_vector
,
675 eqe
->event
.comm_channel_arm
.bit_vec
,
676 sizeof eqe
->event
.comm_channel_arm
.bit_vec
);
677 queue_work(priv
->mfunc
.master
.comm_wq
,
678 &priv
->mfunc
.master
.comm_work
);
681 case MLX4_EVENT_TYPE_FLR_EVENT
:
682 flr_slave
= be32_to_cpu(eqe
->event
.flr_event
.slave_id
);
683 if (!mlx4_is_master(dev
)) {
684 mlx4_warn(dev
, "Non-master function received FLR event\n");
688 mlx4_dbg(dev
, "FLR event for slave: %d\n", flr_slave
);
690 if (flr_slave
>= dev
->num_slaves
) {
692 "Got FLR for unknown function: %d\n",
694 update_slave_state
= 0;
696 update_slave_state
= 1;
698 spin_lock_irqsave(&priv
->mfunc
.master
.slave_state_lock
, flags
);
699 if (update_slave_state
) {
700 priv
->mfunc
.master
.slave_state
[flr_slave
].active
= false;
701 priv
->mfunc
.master
.slave_state
[flr_slave
].last_cmd
= MLX4_COMM_CMD_FLR
;
702 priv
->mfunc
.master
.slave_state
[flr_slave
].is_slave_going_down
= 1;
704 spin_unlock_irqrestore(&priv
->mfunc
.master
.slave_state_lock
, flags
);
705 mlx4_dispatch_event(dev
, MLX4_DEV_EVENT_SLAVE_SHUTDOWN
,
707 queue_work(priv
->mfunc
.master
.comm_wq
,
708 &priv
->mfunc
.master
.slave_flr_event_work
);
711 case MLX4_EVENT_TYPE_FATAL_WARNING
:
712 if (eqe
->subtype
== MLX4_FATAL_WARNING_SUBTYPE_WARMING
) {
713 if (mlx4_is_master(dev
))
714 for (i
= 0; i
< dev
->num_slaves
; i
++) {
715 mlx4_dbg(dev
, "%s: Sending MLX4_FATAL_WARNING_SUBTYPE_WARMING to slave: %d\n",
717 if (i
== dev
->caps
.function
)
719 mlx4_slave_event(dev
, i
, eqe
);
721 mlx4_err(dev
, "Temperature Threshold was reached! Threshold: %d celsius degrees; Current Temperature: %d\n",
722 be16_to_cpu(eqe
->event
.warming
.warning_threshold
),
723 be16_to_cpu(eqe
->event
.warming
.current_temperature
));
725 mlx4_warn(dev
, "Unhandled event FATAL WARNING (%02x), subtype %02x on EQ %d at index %u. owner=%x, nent=0x%x, slave=%x, ownership=%s\n",
726 eqe
->type
, eqe
->subtype
, eq
->eqn
,
727 eq
->cons_index
, eqe
->owner
, eq
->nent
,
729 !!(eqe
->owner
& 0x80) ^
730 !!(eq
->cons_index
& eq
->nent
) ? "HW" : "SW");
734 case MLX4_EVENT_TYPE_PORT_MNG_CHG_EVENT
:
735 mlx4_dispatch_event(dev
, MLX4_DEV_EVENT_PORT_MGMT_CHANGE
,
736 (unsigned long) eqe
);
739 case MLX4_EVENT_TYPE_RECOVERABLE_ERROR_EVENT
:
740 switch (eqe
->subtype
) {
741 case MLX4_RECOVERABLE_ERROR_EVENT_SUBTYPE_BAD_CABLE
:
742 mlx4_warn(dev
, "Bad cable detected on port %u\n",
743 eqe
->event
.bad_cable
.port
);
745 case MLX4_RECOVERABLE_ERROR_EVENT_SUBTYPE_UNSUPPORTED_CABLE
:
746 mlx4_warn(dev
, "Unsupported cable detected\n");
750 "Unhandled recoverable error event detected: %02x(%02x) on EQ %d at index %u. owner=%x, nent=0x%x, ownership=%s\n",
751 eqe
->type
, eqe
->subtype
, eq
->eqn
,
752 eq
->cons_index
, eqe
->owner
, eq
->nent
,
753 !!(eqe
->owner
& 0x80) ^
754 !!(eq
->cons_index
& eq
->nent
) ? "HW" : "SW");
759 case MLX4_EVENT_TYPE_EEC_CATAS_ERROR
:
760 case MLX4_EVENT_TYPE_ECC_DETECT
:
762 mlx4_warn(dev
, "Unhandled event %02x(%02x) on EQ %d at index %u. owner=%x, nent=0x%x, slave=%x, ownership=%s\n",
763 eqe
->type
, eqe
->subtype
, eq
->eqn
,
764 eq
->cons_index
, eqe
->owner
, eq
->nent
,
766 !!(eqe
->owner
& 0x80) ^
767 !!(eq
->cons_index
& eq
->nent
) ? "HW" : "SW");
776 * The HCA will think the queue has overflowed if we
777 * don't tell it we've been processing events. We
778 * create our EQs with MLX4_NUM_SPARE_EQE extra
779 * entries, so we must update our consumer index at
782 if (unlikely(set_ci
>= MLX4_NUM_SPARE_EQE
)) {
790 /* cqn is 24bit wide but is initialized such that its higher bits
791 * are ones too. Thus, if we got any event, cqn's high bits should be off
792 * and we need to schedule the tasklet.
794 if (!(cqn
& ~0xffffff))
795 tasklet_schedule(&eq
->tasklet_ctx
.task
);
800 static irqreturn_t
mlx4_interrupt(int irq
, void *dev_ptr
)
802 struct mlx4_dev
*dev
= dev_ptr
;
803 struct mlx4_priv
*priv
= mlx4_priv(dev
);
807 writel(priv
->eq_table
.clr_mask
, priv
->eq_table
.clr_int
);
809 for (i
= 0; i
< dev
->caps
.num_comp_vectors
+ 1; ++i
)
810 work
|= mlx4_eq_int(dev
, &priv
->eq_table
.eq
[i
]);
812 return IRQ_RETVAL(work
);
815 static irqreturn_t
mlx4_msi_x_interrupt(int irq
, void *eq_ptr
)
817 struct mlx4_eq
*eq
= eq_ptr
;
818 struct mlx4_dev
*dev
= eq
->dev
;
820 mlx4_eq_int(dev
, eq
);
822 /* MSI-X vectors always belong to us */
826 int mlx4_MAP_EQ_wrapper(struct mlx4_dev
*dev
, int slave
,
827 struct mlx4_vhcr
*vhcr
,
828 struct mlx4_cmd_mailbox
*inbox
,
829 struct mlx4_cmd_mailbox
*outbox
,
830 struct mlx4_cmd_info
*cmd
)
832 struct mlx4_priv
*priv
= mlx4_priv(dev
);
833 struct mlx4_slave_event_eq_info
*event_eq
=
834 priv
->mfunc
.master
.slave_state
[slave
].event_eq
;
835 u32 in_modifier
= vhcr
->in_modifier
;
836 u32 eqn
= in_modifier
& 0x3FF;
837 u64 in_param
= vhcr
->in_param
;
841 if (slave
== dev
->caps
.function
)
842 err
= mlx4_cmd(dev
, in_param
, (in_modifier
& 0x80000000) | eqn
,
843 0, MLX4_CMD_MAP_EQ
, MLX4_CMD_TIME_CLASS_B
,
846 for (i
= 0; i
< MLX4_EVENT_TYPES_NUM
; ++i
)
847 if (in_param
& (1LL << i
))
848 event_eq
[i
].eqn
= in_modifier
>> 31 ? -1 : eqn
;
853 static int mlx4_MAP_EQ(struct mlx4_dev
*dev
, u64 event_mask
, int unmap
,
856 return mlx4_cmd(dev
, event_mask
, (unmap
<< 31) | eq_num
,
857 0, MLX4_CMD_MAP_EQ
, MLX4_CMD_TIME_CLASS_B
,
861 static int mlx4_SW2HW_EQ(struct mlx4_dev
*dev
, struct mlx4_cmd_mailbox
*mailbox
,
864 return mlx4_cmd(dev
, mailbox
->dma
, eq_num
, 0,
865 MLX4_CMD_SW2HW_EQ
, MLX4_CMD_TIME_CLASS_A
,
869 static int mlx4_HW2SW_EQ(struct mlx4_dev
*dev
, int eq_num
)
871 return mlx4_cmd(dev
, 0, eq_num
, 1, MLX4_CMD_HW2SW_EQ
,
872 MLX4_CMD_TIME_CLASS_A
, MLX4_CMD_WRAPPED
);
875 static int mlx4_num_eq_uar(struct mlx4_dev
*dev
)
878 * Each UAR holds 4 EQ doorbells. To figure out how many UARs
879 * we need to map, take the difference of highest index and
880 * the lowest index we'll use and add 1.
882 return (dev
->caps
.num_comp_vectors
+ 1 + dev
->caps
.reserved_eqs
+
883 dev
->caps
.comp_pool
)/4 - dev
->caps
.reserved_eqs
/4 + 1;
886 static void __iomem
*mlx4_get_eq_uar(struct mlx4_dev
*dev
, struct mlx4_eq
*eq
)
888 struct mlx4_priv
*priv
= mlx4_priv(dev
);
891 index
= eq
->eqn
/ 4 - dev
->caps
.reserved_eqs
/ 4;
893 if (!priv
->eq_table
.uar_map
[index
]) {
894 priv
->eq_table
.uar_map
[index
] =
895 ioremap(pci_resource_start(dev
->persist
->pdev
, 2) +
896 ((eq
->eqn
/ 4) << PAGE_SHIFT
),
898 if (!priv
->eq_table
.uar_map
[index
]) {
899 mlx4_err(dev
, "Couldn't map EQ doorbell for EQN 0x%06x\n",
905 return priv
->eq_table
.uar_map
[index
] + 0x800 + 8 * (eq
->eqn
% 4);
908 static void mlx4_unmap_uar(struct mlx4_dev
*dev
)
910 struct mlx4_priv
*priv
= mlx4_priv(dev
);
913 for (i
= 0; i
< mlx4_num_eq_uar(dev
); ++i
)
914 if (priv
->eq_table
.uar_map
[i
]) {
915 iounmap(priv
->eq_table
.uar_map
[i
]);
916 priv
->eq_table
.uar_map
[i
] = NULL
;
920 static int mlx4_create_eq(struct mlx4_dev
*dev
, int nent
,
921 u8 intr
, struct mlx4_eq
*eq
)
923 struct mlx4_priv
*priv
= mlx4_priv(dev
);
924 struct mlx4_cmd_mailbox
*mailbox
;
925 struct mlx4_eq_context
*eq_context
;
927 u64
*dma_list
= NULL
;
934 eq
->nent
= roundup_pow_of_two(max(nent
, 2));
935 /* CX3 is capable of extending the CQE/EQE from 32 to 64 bytes, with
936 * strides of 64B,128B and 256B.
938 npages
= PAGE_ALIGN(eq
->nent
* dev
->caps
.eqe_size
) / PAGE_SIZE
;
940 eq
->page_list
= kmalloc(npages
* sizeof *eq
->page_list
,
945 for (i
= 0; i
< npages
; ++i
)
946 eq
->page_list
[i
].buf
= NULL
;
948 dma_list
= kmalloc(npages
* sizeof *dma_list
, GFP_KERNEL
);
952 mailbox
= mlx4_alloc_cmd_mailbox(dev
);
955 eq_context
= mailbox
->buf
;
957 for (i
= 0; i
< npages
; ++i
) {
958 eq
->page_list
[i
].buf
= dma_alloc_coherent(&dev
->persist
->
962 if (!eq
->page_list
[i
].buf
)
963 goto err_out_free_pages
;
966 eq
->page_list
[i
].map
= t
;
968 memset(eq
->page_list
[i
].buf
, 0, PAGE_SIZE
);
971 eq
->eqn
= mlx4_bitmap_alloc(&priv
->eq_table
.bitmap
);
973 goto err_out_free_pages
;
975 eq
->doorbell
= mlx4_get_eq_uar(dev
, eq
);
978 goto err_out_free_eq
;
981 err
= mlx4_mtt_init(dev
, npages
, PAGE_SHIFT
, &eq
->mtt
);
983 goto err_out_free_eq
;
985 err
= mlx4_write_mtt(dev
, &eq
->mtt
, 0, npages
, dma_list
);
987 goto err_out_free_mtt
;
989 eq_context
->flags
= cpu_to_be32(MLX4_EQ_STATUS_OK
|
990 MLX4_EQ_STATE_ARMED
);
991 eq_context
->log_eq_size
= ilog2(eq
->nent
);
992 eq_context
->intr
= intr
;
993 eq_context
->log_page_size
= PAGE_SHIFT
- MLX4_ICM_PAGE_SHIFT
;
995 mtt_addr
= mlx4_mtt_addr(dev
, &eq
->mtt
);
996 eq_context
->mtt_base_addr_h
= mtt_addr
>> 32;
997 eq_context
->mtt_base_addr_l
= cpu_to_be32(mtt_addr
& 0xffffffff);
999 err
= mlx4_SW2HW_EQ(dev
, mailbox
, eq
->eqn
);
1001 mlx4_warn(dev
, "SW2HW_EQ failed (%d)\n", err
);
1002 goto err_out_free_mtt
;
1006 mlx4_free_cmd_mailbox(dev
, mailbox
);
1010 INIT_LIST_HEAD(&eq
->tasklet_ctx
.list
);
1011 INIT_LIST_HEAD(&eq
->tasklet_ctx
.process_list
);
1012 spin_lock_init(&eq
->tasklet_ctx
.lock
);
1013 tasklet_init(&eq
->tasklet_ctx
.task
, mlx4_cq_tasklet_cb
,
1014 (unsigned long)&eq
->tasklet_ctx
);
1019 mlx4_mtt_cleanup(dev
, &eq
->mtt
);
1022 mlx4_bitmap_free(&priv
->eq_table
.bitmap
, eq
->eqn
, MLX4_USE_RR
);
1025 for (i
= 0; i
< npages
; ++i
)
1026 if (eq
->page_list
[i
].buf
)
1027 dma_free_coherent(&dev
->persist
->pdev
->dev
, PAGE_SIZE
,
1028 eq
->page_list
[i
].buf
,
1029 eq
->page_list
[i
].map
);
1031 mlx4_free_cmd_mailbox(dev
, mailbox
);
1034 kfree(eq
->page_list
);
1041 static void mlx4_free_eq(struct mlx4_dev
*dev
,
1044 struct mlx4_priv
*priv
= mlx4_priv(dev
);
1047 /* CX3 is capable of extending the CQE/EQE from 32 to 64 bytes, with
1048 * strides of 64B,128B and 256B
1050 int npages
= PAGE_ALIGN(dev
->caps
.eqe_size
* eq
->nent
) / PAGE_SIZE
;
1052 err
= mlx4_HW2SW_EQ(dev
, eq
->eqn
);
1054 mlx4_warn(dev
, "HW2SW_EQ failed (%d)\n", err
);
1056 synchronize_irq(eq
->irq
);
1057 tasklet_disable(&eq
->tasklet_ctx
.task
);
1059 mlx4_mtt_cleanup(dev
, &eq
->mtt
);
1060 for (i
= 0; i
< npages
; ++i
)
1061 dma_free_coherent(&dev
->persist
->pdev
->dev
, PAGE_SIZE
,
1062 eq
->page_list
[i
].buf
,
1063 eq
->page_list
[i
].map
);
1065 kfree(eq
->page_list
);
1066 mlx4_bitmap_free(&priv
->eq_table
.bitmap
, eq
->eqn
, MLX4_USE_RR
);
1069 static void mlx4_free_irqs(struct mlx4_dev
*dev
)
1071 struct mlx4_eq_table
*eq_table
= &mlx4_priv(dev
)->eq_table
;
1072 struct mlx4_priv
*priv
= mlx4_priv(dev
);
1075 if (eq_table
->have_irq
)
1076 free_irq(dev
->persist
->pdev
->irq
, dev
);
1078 for (i
= 0; i
< dev
->caps
.num_comp_vectors
+ 1; ++i
)
1079 if (eq_table
->eq
[i
].have_irq
) {
1080 free_irq(eq_table
->eq
[i
].irq
, eq_table
->eq
+ i
);
1081 eq_table
->eq
[i
].have_irq
= 0;
1084 for (i
= 0; i
< dev
->caps
.comp_pool
; i
++) {
1086 * Freeing the assigned irq's
1087 * all bits should be 0, but we need to validate
1089 if (priv
->msix_ctl
.pool_bm
& 1ULL << i
) {
1090 /* NO need protecting*/
1091 vec
= dev
->caps
.num_comp_vectors
+ 1 + i
;
1092 free_irq(priv
->eq_table
.eq
[vec
].irq
,
1093 &priv
->eq_table
.eq
[vec
]);
1098 kfree(eq_table
->irq_names
);
1101 static int mlx4_map_clr_int(struct mlx4_dev
*dev
)
1103 struct mlx4_priv
*priv
= mlx4_priv(dev
);
1105 priv
->clr_base
= ioremap(pci_resource_start(dev
->persist
->pdev
,
1106 priv
->fw
.clr_int_bar
) +
1107 priv
->fw
.clr_int_base
, MLX4_CLR_INT_SIZE
);
1108 if (!priv
->clr_base
) {
1109 mlx4_err(dev
, "Couldn't map interrupt clear register, aborting\n");
1116 static void mlx4_unmap_clr_int(struct mlx4_dev
*dev
)
1118 struct mlx4_priv
*priv
= mlx4_priv(dev
);
1120 iounmap(priv
->clr_base
);
1123 int mlx4_alloc_eq_table(struct mlx4_dev
*dev
)
1125 struct mlx4_priv
*priv
= mlx4_priv(dev
);
1127 priv
->eq_table
.eq
= kcalloc(dev
->caps
.num_eqs
- dev
->caps
.reserved_eqs
,
1128 sizeof *priv
->eq_table
.eq
, GFP_KERNEL
);
1129 if (!priv
->eq_table
.eq
)
1135 void mlx4_free_eq_table(struct mlx4_dev
*dev
)
1137 kfree(mlx4_priv(dev
)->eq_table
.eq
);
1140 int mlx4_init_eq_table(struct mlx4_dev
*dev
)
1142 struct mlx4_priv
*priv
= mlx4_priv(dev
);
1146 priv
->eq_table
.uar_map
= kcalloc(mlx4_num_eq_uar(dev
),
1147 sizeof *priv
->eq_table
.uar_map
,
1149 if (!priv
->eq_table
.uar_map
) {
1154 err
= mlx4_bitmap_init(&priv
->eq_table
.bitmap
,
1155 roundup_pow_of_two(dev
->caps
.num_eqs
),
1156 dev
->caps
.num_eqs
- 1,
1157 dev
->caps
.reserved_eqs
,
1158 roundup_pow_of_two(dev
->caps
.num_eqs
) -
1163 for (i
= 0; i
< mlx4_num_eq_uar(dev
); ++i
)
1164 priv
->eq_table
.uar_map
[i
] = NULL
;
1166 if (!mlx4_is_slave(dev
)) {
1167 err
= mlx4_map_clr_int(dev
);
1169 goto err_out_bitmap
;
1171 priv
->eq_table
.clr_mask
=
1172 swab32(1 << (priv
->eq_table
.inta_pin
& 31));
1173 priv
->eq_table
.clr_int
= priv
->clr_base
+
1174 (priv
->eq_table
.inta_pin
< 32 ? 4 : 0);
1177 priv
->eq_table
.irq_names
=
1178 kmalloc(MLX4_IRQNAME_SIZE
* (dev
->caps
.num_comp_vectors
+ 1 +
1179 dev
->caps
.comp_pool
),
1181 if (!priv
->eq_table
.irq_names
) {
1183 goto err_out_bitmap
;
1186 for (i
= 0; i
< dev
->caps
.num_comp_vectors
; ++i
) {
1187 err
= mlx4_create_eq(dev
, dev
->caps
.num_cqs
-
1188 dev
->caps
.reserved_cqs
+
1190 (dev
->flags
& MLX4_FLAG_MSI_X
) ? i
: 0,
1191 &priv
->eq_table
.eq
[i
]);
1198 err
= mlx4_create_eq(dev
, MLX4_NUM_ASYNC_EQE
+ MLX4_NUM_SPARE_EQE
,
1199 (dev
->flags
& MLX4_FLAG_MSI_X
) ? dev
->caps
.num_comp_vectors
: 0,
1200 &priv
->eq_table
.eq
[dev
->caps
.num_comp_vectors
]);
1204 /*if additional completion vectors poolsize is 0 this loop will not run*/
1205 for (i
= dev
->caps
.num_comp_vectors
+ 1;
1206 i
< dev
->caps
.num_comp_vectors
+ dev
->caps
.comp_pool
+ 1; ++i
) {
1208 err
= mlx4_create_eq(dev
, dev
->caps
.num_cqs
-
1209 dev
->caps
.reserved_cqs
+
1211 (dev
->flags
& MLX4_FLAG_MSI_X
) ? i
: 0,
1212 &priv
->eq_table
.eq
[i
]);
1220 if (dev
->flags
& MLX4_FLAG_MSI_X
) {
1221 const char *eq_name
;
1223 for (i
= 0; i
< dev
->caps
.num_comp_vectors
+ 1; ++i
) {
1224 if (i
< dev
->caps
.num_comp_vectors
) {
1225 snprintf(priv
->eq_table
.irq_names
+
1226 i
* MLX4_IRQNAME_SIZE
,
1228 "mlx4-comp-%d@pci:%s", i
,
1229 pci_name(dev
->persist
->pdev
));
1231 snprintf(priv
->eq_table
.irq_names
+
1232 i
* MLX4_IRQNAME_SIZE
,
1234 "mlx4-async@pci:%s",
1235 pci_name(dev
->persist
->pdev
));
1238 eq_name
= priv
->eq_table
.irq_names
+
1239 i
* MLX4_IRQNAME_SIZE
;
1240 err
= request_irq(priv
->eq_table
.eq
[i
].irq
,
1241 mlx4_msi_x_interrupt
, 0, eq_name
,
1242 priv
->eq_table
.eq
+ i
);
1246 priv
->eq_table
.eq
[i
].have_irq
= 1;
1249 snprintf(priv
->eq_table
.irq_names
,
1252 pci_name(dev
->persist
->pdev
));
1253 err
= request_irq(dev
->persist
->pdev
->irq
, mlx4_interrupt
,
1254 IRQF_SHARED
, priv
->eq_table
.irq_names
, dev
);
1258 priv
->eq_table
.have_irq
= 1;
1261 err
= mlx4_MAP_EQ(dev
, get_async_ev_mask(dev
), 0,
1262 priv
->eq_table
.eq
[dev
->caps
.num_comp_vectors
].eqn
);
1264 mlx4_warn(dev
, "MAP_EQ for async EQ %d failed (%d)\n",
1265 priv
->eq_table
.eq
[dev
->caps
.num_comp_vectors
].eqn
, err
);
1267 for (i
= 0; i
< dev
->caps
.num_comp_vectors
+ 1; ++i
)
1268 eq_set_ci(&priv
->eq_table
.eq
[i
], 1);
1273 mlx4_free_eq(dev
, &priv
->eq_table
.eq
[dev
->caps
.num_comp_vectors
]);
1276 i
= dev
->caps
.num_comp_vectors
- 1;
1280 mlx4_free_eq(dev
, &priv
->eq_table
.eq
[i
]);
1283 if (!mlx4_is_slave(dev
))
1284 mlx4_unmap_clr_int(dev
);
1285 mlx4_free_irqs(dev
);
1288 mlx4_unmap_uar(dev
);
1289 mlx4_bitmap_cleanup(&priv
->eq_table
.bitmap
);
1292 kfree(priv
->eq_table
.uar_map
);
1297 void mlx4_cleanup_eq_table(struct mlx4_dev
*dev
)
1299 struct mlx4_priv
*priv
= mlx4_priv(dev
);
1302 mlx4_MAP_EQ(dev
, get_async_ev_mask(dev
), 1,
1303 priv
->eq_table
.eq
[dev
->caps
.num_comp_vectors
].eqn
);
1305 mlx4_free_irqs(dev
);
1307 for (i
= 0; i
< dev
->caps
.num_comp_vectors
+ dev
->caps
.comp_pool
+ 1; ++i
)
1308 mlx4_free_eq(dev
, &priv
->eq_table
.eq
[i
]);
1310 if (!mlx4_is_slave(dev
))
1311 mlx4_unmap_clr_int(dev
);
1313 mlx4_unmap_uar(dev
);
1314 mlx4_bitmap_cleanup(&priv
->eq_table
.bitmap
);
1316 kfree(priv
->eq_table
.uar_map
);
1319 /* A test that verifies that we can accept interrupts on all
1320 * the irq vectors of the device.
1321 * Interrupts are checked using the NOP command.
1323 int mlx4_test_interrupts(struct mlx4_dev
*dev
)
1325 struct mlx4_priv
*priv
= mlx4_priv(dev
);
1329 err
= mlx4_NOP(dev
);
1330 /* When not in MSI_X, there is only one irq to check */
1331 if (!(dev
->flags
& MLX4_FLAG_MSI_X
) || mlx4_is_slave(dev
))
1334 /* A loop over all completion vectors, for each vector we will check
1335 * whether it works by mapping command completions to that vector
1336 * and performing a NOP command
1338 for(i
= 0; !err
&& (i
< dev
->caps
.num_comp_vectors
); ++i
) {
1339 /* Temporary use polling for command completions */
1340 mlx4_cmd_use_polling(dev
);
1342 /* Map the new eq to handle all asynchronous events */
1343 err
= mlx4_MAP_EQ(dev
, get_async_ev_mask(dev
), 0,
1344 priv
->eq_table
.eq
[i
].eqn
);
1346 mlx4_warn(dev
, "Failed mapping eq for interrupt test\n");
1347 mlx4_cmd_use_events(dev
);
1351 /* Go back to using events */
1352 mlx4_cmd_use_events(dev
);
1353 err
= mlx4_NOP(dev
);
1356 /* Return to default */
1357 mlx4_MAP_EQ(dev
, get_async_ev_mask(dev
), 0,
1358 priv
->eq_table
.eq
[dev
->caps
.num_comp_vectors
].eqn
);
1361 EXPORT_SYMBOL(mlx4_test_interrupts
);
1363 int mlx4_assign_eq(struct mlx4_dev
*dev
, char *name
, struct cpu_rmap
*rmap
,
1367 struct mlx4_priv
*priv
= mlx4_priv(dev
);
1368 int vec
= 0, err
= 0, i
;
1370 mutex_lock(&priv
->msix_ctl
.pool_lock
);
1371 for (i
= 0; !vec
&& i
< dev
->caps
.comp_pool
; i
++) {
1372 if (~priv
->msix_ctl
.pool_bm
& 1ULL << i
) {
1373 priv
->msix_ctl
.pool_bm
|= 1ULL << i
;
1374 vec
= dev
->caps
.num_comp_vectors
+ 1 + i
;
1375 snprintf(priv
->eq_table
.irq_names
+
1376 vec
* MLX4_IRQNAME_SIZE
,
1377 MLX4_IRQNAME_SIZE
, "%s", name
);
1378 #ifdef CONFIG_RFS_ACCEL
1380 err
= irq_cpu_rmap_add(rmap
,
1381 priv
->eq_table
.eq
[vec
].irq
);
1383 mlx4_warn(dev
, "Failed adding irq rmap\n");
1386 err
= request_irq(priv
->eq_table
.eq
[vec
].irq
,
1387 mlx4_msi_x_interrupt
, 0,
1388 &priv
->eq_table
.irq_names
[vec
<<5],
1389 priv
->eq_table
.eq
+ vec
);
1391 /*zero out bit by fliping it*/
1392 priv
->msix_ctl
.pool_bm
^= 1 << i
;
1395 /*we dont want to break here*/
1398 eq_set_ci(&priv
->eq_table
.eq
[vec
], 1);
1401 mutex_unlock(&priv
->msix_ctl
.pool_lock
);
1407 err
= (i
== dev
->caps
.comp_pool
) ? -ENOSPC
: err
;
1411 EXPORT_SYMBOL(mlx4_assign_eq
);
1413 int mlx4_eq_get_irq(struct mlx4_dev
*dev
, int vec
)
1415 struct mlx4_priv
*priv
= mlx4_priv(dev
);
1417 return priv
->eq_table
.eq
[vec
].irq
;
1419 EXPORT_SYMBOL(mlx4_eq_get_irq
);
1421 void mlx4_release_eq(struct mlx4_dev
*dev
, int vec
)
1423 struct mlx4_priv
*priv
= mlx4_priv(dev
);
1425 int i
= vec
- dev
->caps
.num_comp_vectors
- 1;
1427 if (likely(i
>= 0)) {
1428 /*sanity check , making sure were not trying to free irq's
1429 Belonging to a legacy EQ*/
1430 mutex_lock(&priv
->msix_ctl
.pool_lock
);
1431 if (priv
->msix_ctl
.pool_bm
& 1ULL << i
) {
1432 free_irq(priv
->eq_table
.eq
[vec
].irq
,
1433 &priv
->eq_table
.eq
[vec
]);
1434 priv
->msix_ctl
.pool_bm
&= ~(1ULL << i
);
1436 mutex_unlock(&priv
->msix_ctl
.pool_lock
);
1440 EXPORT_SYMBOL(mlx4_release_eq
);