2 * Copyright (c) 2005, 2006, 2007, 2008, 2014 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/module.h>
38 #include <linux/dma-mapping.h>
40 #include <dev/mlx4/cmd.h>
46 MLX4_IRQNAME_SIZE = 32
50 MLX4_NUM_ASYNC_EQE = 0x100,
51 MLX4_NUM_SPARE_EQE = 0x80,
52 MLX4_EQ_ENTRY_SIZE = 0x20
55 #define MLX4_EQ_STATUS_OK ( 0 << 28)
56 #define MLX4_EQ_STATUS_WRITE_FAIL (10 << 28)
57 #define MLX4_EQ_OWNER_SW ( 0 << 24)
58 #define MLX4_EQ_OWNER_HW ( 1 << 24)
59 #define MLX4_EQ_FLAG_EC ( 1 << 18)
60 #define MLX4_EQ_FLAG_OI ( 1 << 17)
61 #define MLX4_EQ_STATE_ARMED ( 9 << 8)
62 #define MLX4_EQ_STATE_FIRED (10 << 8)
63 #define MLX4_EQ_STATE_ALWAYS_ARMED (11 << 8)
65 #define MLX4_ASYNC_EVENT_MASK ((1ull << MLX4_EVENT_TYPE_PATH_MIG) | \
66 (1ull << MLX4_EVENT_TYPE_COMM_EST) | \
67 (1ull << MLX4_EVENT_TYPE_SQ_DRAINED) | \
68 (1ull << MLX4_EVENT_TYPE_CQ_ERROR) | \
69 (1ull << MLX4_EVENT_TYPE_WQ_CATAS_ERROR) | \
70 (1ull << MLX4_EVENT_TYPE_EEC_CATAS_ERROR) | \
71 (1ull << MLX4_EVENT_TYPE_PATH_MIG_FAILED) | \
72 (1ull << MLX4_EVENT_TYPE_WQ_INVAL_REQ_ERROR) | \
73 (1ull << MLX4_EVENT_TYPE_WQ_ACCESS_ERROR) | \
74 (1ull << MLX4_EVENT_TYPE_PORT_CHANGE) | \
75 (1ull << MLX4_EVENT_TYPE_ECC_DETECT) | \
76 (1ull << MLX4_EVENT_TYPE_SRQ_CATAS_ERROR) | \
77 (1ull << MLX4_EVENT_TYPE_SRQ_QP_LAST_WQE) | \
78 (1ull << MLX4_EVENT_TYPE_SRQ_LIMIT) | \
79 (1ull << MLX4_EVENT_TYPE_CMD) | \
80 (1ull << MLX4_EVENT_TYPE_OP_REQUIRED) | \
81 (1ull << MLX4_EVENT_TYPE_COMM_CHANNEL) | \
82 (1ull << MLX4_EVENT_TYPE_FLR_EVENT) | \
83 (1ull << MLX4_EVENT_TYPE_FATAL_WARNING))
85 static u64 get_async_ev_mask(struct mlx4_dev *dev)
87 u64 async_ev_mask = MLX4_ASYNC_EVENT_MASK;
88 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_PORT_MNG_CHG_EV)
89 async_ev_mask |= (1ull << MLX4_EVENT_TYPE_PORT_MNG_CHG_EVENT);
90 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RECOVERABLE_ERROR_EVENT)
91 async_ev_mask |= (1ull << MLX4_EVENT_TYPE_RECOVERABLE_ERROR_EVENT);
96 static void eq_set_ci(struct mlx4_eq *eq, int req_not)
98 __raw_writel((__force u32) cpu_to_be32((eq->cons_index & 0xffffff) |
101 /* We still want ordering, just not swabbing, so add a barrier */
105 static struct mlx4_eqe *get_eqe(struct mlx4_eq *eq, u32 entry, u8 eqe_factor)
107 /* (entry & (eq->nent - 1)) gives us a cyclic array */
108 unsigned long offset = (entry & (eq->nent - 1)) * (MLX4_EQ_ENTRY_SIZE << eqe_factor);
109 /* CX3 is capable of extending the EQE from 32 to 64 bytes.
110 * When this feature is enabled, the first (in the lower addresses)
111 * 32 bytes in the 64 byte EQE are reserved and the next 32 bytes
112 * contain the legacy EQE information.
114 return eq->page_list[offset / PAGE_SIZE].buf + (offset + (eqe_factor ? MLX4_EQ_ENTRY_SIZE : 0)) % PAGE_SIZE;
117 static struct mlx4_eqe *next_eqe_sw(struct mlx4_eq *eq, u8 eqe_factor)
119 struct mlx4_eqe *eqe = get_eqe(eq, eq->cons_index, eqe_factor);
120 return !!(eqe->owner & 0x80) ^ !!(eq->cons_index & eq->nent) ? NULL : eqe;
123 static struct mlx4_eqe *next_slave_event_eqe(struct mlx4_slave_event_eq *slave_eq)
125 struct mlx4_eqe *eqe =
126 &slave_eq->event_eqe[slave_eq->cons & (SLAVE_EVENT_EQ_SIZE - 1)];
127 return (!!(eqe->owner & 0x80) ^
128 !!(slave_eq->cons & SLAVE_EVENT_EQ_SIZE)) ?
132 void mlx4_gen_slave_eqe(struct work_struct *work)
134 struct mlx4_mfunc_master_ctx *master =
135 container_of(work, struct mlx4_mfunc_master_ctx,
137 struct mlx4_mfunc *mfunc =
138 container_of(master, struct mlx4_mfunc, master);
139 struct mlx4_priv *priv = container_of(mfunc, struct mlx4_priv, mfunc);
140 struct mlx4_dev *dev = &priv->dev;
141 struct mlx4_slave_event_eq *slave_eq = &mfunc->master.slave_eq;
142 struct mlx4_eqe *eqe;
146 for (eqe = next_slave_event_eqe(slave_eq); eqe;
147 eqe = next_slave_event_eqe(slave_eq)) {
148 slave = eqe->slave_id;
150 /* All active slaves need to receive the event */
151 if (slave == ALL_SLAVES) {
152 for (i = 0; i < dev->num_slaves; i++) {
153 if (mlx4_GEN_EQE(dev, i, eqe))
154 mlx4_warn(dev, "Failed to generate "
155 "event for slave %d\n", i);
158 if (mlx4_GEN_EQE(dev, slave, eqe))
159 mlx4_warn(dev, "Failed to generate event "
160 "for slave %d\n", slave);
167 static void slave_event(struct mlx4_dev *dev, u8 slave, struct mlx4_eqe *eqe)
169 struct mlx4_priv *priv = mlx4_priv(dev);
170 struct mlx4_slave_event_eq *slave_eq = &priv->mfunc.master.slave_eq;
171 struct mlx4_eqe *s_eqe;
174 spin_lock_irqsave(&slave_eq->event_lock, flags);
175 s_eqe = &slave_eq->event_eqe[slave_eq->prod & (SLAVE_EVENT_EQ_SIZE - 1)];
176 if ((!!(s_eqe->owner & 0x80)) ^
177 (!!(slave_eq->prod & SLAVE_EVENT_EQ_SIZE))) {
178 mlx4_warn(dev, "Master failed to generate an EQE for slave: %d. "
179 "No free EQE on slave events queue\n", slave);
180 spin_unlock_irqrestore(&slave_eq->event_lock, flags);
184 memcpy(s_eqe, eqe, dev->caps.eqe_size - 1);
185 s_eqe->slave_id = slave;
186 /* ensure all information is written before setting the ownersip bit */
188 s_eqe->owner = !!(slave_eq->prod & SLAVE_EVENT_EQ_SIZE) ? 0x0 : 0x80;
191 queue_work(priv->mfunc.master.comm_wq,
192 &priv->mfunc.master.slave_event_work);
193 spin_unlock_irqrestore(&slave_eq->event_lock, flags);
196 static void mlx4_slave_event(struct mlx4_dev *dev, int slave,
197 struct mlx4_eqe *eqe)
199 struct mlx4_priv *priv = mlx4_priv(dev);
201 if (slave < 0 || slave >= dev->num_slaves ||
202 slave == dev->caps.function)
205 if (!priv->mfunc.master.slave_state[slave].active)
208 slave_event(dev, slave, eqe);
211 int mlx4_gen_pkey_eqe(struct mlx4_dev *dev, int slave, u8 port)
215 struct mlx4_priv *priv = mlx4_priv(dev);
216 struct mlx4_slave_state *s_slave = &priv->mfunc.master.slave_state[slave];
218 if (!s_slave->active)
221 memset(&eqe, 0, sizeof eqe);
223 eqe.type = MLX4_EVENT_TYPE_PORT_MNG_CHG_EVENT;
224 eqe.subtype = MLX4_DEV_PMC_SUBTYPE_PKEY_TABLE;
225 eqe.event.port_mgmt_change.port = port;
227 return mlx4_GEN_EQE(dev, slave, &eqe);
229 EXPORT_SYMBOL(mlx4_gen_pkey_eqe);
231 int mlx4_gen_guid_change_eqe(struct mlx4_dev *dev, int slave, u8 port)
235 /*don't send if we don't have the that slave */
236 if (dev->num_vfs < slave)
238 memset(&eqe, 0, sizeof eqe);
240 eqe.type = MLX4_EVENT_TYPE_PORT_MNG_CHG_EVENT;
241 eqe.subtype = MLX4_DEV_PMC_SUBTYPE_GUID_INFO;
242 eqe.event.port_mgmt_change.port = port;
244 return mlx4_GEN_EQE(dev, slave, &eqe);
246 EXPORT_SYMBOL(mlx4_gen_guid_change_eqe);
248 int mlx4_gen_port_state_change_eqe(struct mlx4_dev *dev, int slave, u8 port,
249 u8 port_subtype_change)
253 /*don't send if we don't have the that slave */
254 if (dev->num_vfs < slave)
256 memset(&eqe, 0, sizeof eqe);
258 eqe.type = MLX4_EVENT_TYPE_PORT_CHANGE;
259 eqe.subtype = port_subtype_change;
260 eqe.event.port_change.port = cpu_to_be32(port << 28);
262 mlx4_dbg(dev, "%s: sending: %d to slave: %d on port: %d\n", __func__,
263 port_subtype_change, slave, port);
264 return mlx4_GEN_EQE(dev, slave, &eqe);
266 EXPORT_SYMBOL(mlx4_gen_port_state_change_eqe);
268 enum slave_port_state mlx4_get_slave_port_state(struct mlx4_dev *dev, int slave, u8 port)
270 struct mlx4_priv *priv = mlx4_priv(dev);
271 struct mlx4_slave_state *s_state = priv->mfunc.master.slave_state;
272 if (slave >= dev->num_slaves || port > MLX4_MAX_PORTS) {
273 pr_err("%s: Error: asking for slave:%d, port:%d\n",
274 __func__, slave, port);
275 return SLAVE_PORT_DOWN;
277 return s_state[slave].port_state[port];
279 EXPORT_SYMBOL(mlx4_get_slave_port_state);
281 static int mlx4_set_slave_port_state(struct mlx4_dev *dev, int slave, u8 port,
282 enum slave_port_state state)
284 struct mlx4_priv *priv = mlx4_priv(dev);
285 struct mlx4_slave_state *s_state = priv->mfunc.master.slave_state;
287 if (slave >= dev->num_slaves || port > MLX4_MAX_PORTS || port == 0) {
288 pr_err("%s: Error: asking for slave:%d, port:%d\n",
289 __func__, slave, port);
292 s_state[slave].port_state[port] = state;
297 static void set_all_slave_state(struct mlx4_dev *dev, u8 port, int event)
300 enum slave_port_gen_event gen_event;
302 for (i = 0; i < dev->num_slaves; i++)
303 set_and_calc_slave_port_state(dev, i, port, event, &gen_event);
305 /**************************************************************************
306 The function get as input the new event to that port,
307 and according to the prev state change the slave's port state.
309 MLX4_PORT_STATE_DEV_EVENT_PORT_DOWN,
310 MLX4_PORT_STATE_DEV_EVENT_PORT_UP
311 MLX4_PORT_STATE_IB_EVENT_GID_VALID
312 MLX4_PORT_STATE_IB_EVENT_GID_INVALID
313 ***************************************************************************/
314 int set_and_calc_slave_port_state(struct mlx4_dev *dev, int slave,
316 enum slave_port_gen_event *gen_event)
318 struct mlx4_priv *priv = mlx4_priv(dev);
319 struct mlx4_slave_state *ctx = NULL;
322 enum slave_port_state cur_state =
323 mlx4_get_slave_port_state(dev, slave, port);
325 *gen_event = SLAVE_PORT_GEN_EVENT_NONE;
327 if (slave >= dev->num_slaves || port > MLX4_MAX_PORTS || port == 0) {
328 pr_err("%s: Error: asking for slave:%d, port:%d\n",
329 __func__, slave, port);
333 ctx = &priv->mfunc.master.slave_state[slave];
334 spin_lock_irqsave(&ctx->lock, flags);
337 case SLAVE_PORT_DOWN:
338 if (MLX4_PORT_STATE_DEV_EVENT_PORT_UP == event)
339 mlx4_set_slave_port_state(dev, slave, port,
342 case SLAVE_PENDING_UP:
343 if (MLX4_PORT_STATE_DEV_EVENT_PORT_DOWN == event)
344 mlx4_set_slave_port_state(dev, slave, port,
346 else if (MLX4_PORT_STATE_IB_PORT_STATE_EVENT_GID_VALID == event) {
347 mlx4_set_slave_port_state(dev, slave, port,
349 *gen_event = SLAVE_PORT_GEN_EVENT_UP;
353 if (MLX4_PORT_STATE_DEV_EVENT_PORT_DOWN == event) {
354 mlx4_set_slave_port_state(dev, slave, port,
356 *gen_event = SLAVE_PORT_GEN_EVENT_DOWN;
357 } else if (MLX4_PORT_STATE_IB_EVENT_GID_INVALID ==
359 mlx4_set_slave_port_state(dev, slave, port,
361 *gen_event = SLAVE_PORT_GEN_EVENT_DOWN;
365 pr_err("%s: BUG!!! UNKNOWN state: "
366 "slave:%d, port:%d\n", __func__, slave, port);
369 ret = mlx4_get_slave_port_state(dev, slave, port);
372 spin_unlock_irqrestore(&ctx->lock, flags);
376 EXPORT_SYMBOL(set_and_calc_slave_port_state);
378 int mlx4_gen_slaves_port_mgt_ev(struct mlx4_dev *dev, u8 port, int attr, u16 sm_lid, u8 sm_sl)
382 memset(&eqe, 0, sizeof eqe);
384 eqe.type = MLX4_EVENT_TYPE_PORT_MNG_CHG_EVENT;
385 eqe.subtype = MLX4_DEV_PMC_SUBTYPE_PORT_INFO;
386 eqe.event.port_mgmt_change.port = port;
387 eqe.event.port_mgmt_change.params.port_info.changed_attr =
388 cpu_to_be32((u32) attr);
389 if (attr & MSTR_SM_CHANGE_MASK) {
390 eqe.event.port_mgmt_change.params.port_info.mstr_sm_lid =
392 eqe.event.port_mgmt_change.params.port_info.mstr_sm_sl =
396 slave_event(dev, ALL_SLAVES, &eqe);
399 EXPORT_SYMBOL(mlx4_gen_slaves_port_mgt_ev);
401 void mlx4_master_handle_slave_flr(struct work_struct *work)
403 struct mlx4_mfunc_master_ctx *master =
404 container_of(work, struct mlx4_mfunc_master_ctx,
405 slave_flr_event_work);
406 struct mlx4_mfunc *mfunc =
407 container_of(master, struct mlx4_mfunc, master);
408 struct mlx4_priv *priv =
409 container_of(mfunc, struct mlx4_priv, mfunc);
410 struct mlx4_dev *dev = &priv->dev;
411 struct mlx4_slave_state *slave_state = priv->mfunc.master.slave_state;
416 mlx4_dbg(dev, "mlx4_handle_slave_flr\n");
418 for (i = 0 ; i < dev->num_slaves; i++) {
420 if (MLX4_COMM_CMD_FLR == slave_state[i].last_cmd) {
421 mlx4_dbg(dev, "mlx4_handle_slave_flr: "
422 "clean slave: %d\n", i);
424 mlx4_delete_all_resources_for_slave(dev, i);
425 /*return the slave to running mode*/
426 spin_lock_irqsave(&priv->mfunc.master.slave_state_lock, flags);
427 slave_state[i].last_cmd = MLX4_COMM_CMD_RESET;
428 slave_state[i].is_slave_going_down = 0;
429 spin_unlock_irqrestore(&priv->mfunc.master.slave_state_lock, flags);
431 err = mlx4_cmd(dev, 0, i, 0, MLX4_CMD_INFORM_FLR_DONE,
432 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
434 mlx4_warn(dev, "Failed to notify FW on "
435 "FLR done (slave:%d)\n", i);
440 static int mlx4_eq_int(struct mlx4_dev *dev, struct mlx4_eq *eq)
442 struct mlx4_priv *priv = mlx4_priv(dev);
443 struct mlx4_eqe *eqe;
451 u8 update_slave_state;
453 enum slave_port_gen_event gen_event;
455 struct mlx4_vport_state *s_info;
457 while ((eqe = next_eqe_sw(eq, dev->caps.eqe_factor))) {
459 * Make sure we read EQ entry contents after we've
460 * checked the ownership bit.
465 case MLX4_EVENT_TYPE_COMP:
466 cqn = be32_to_cpu(eqe->event.comp.cqn) & 0xffffff;
467 mlx4_cq_completion(dev, cqn);
470 case MLX4_EVENT_TYPE_PATH_MIG:
471 case MLX4_EVENT_TYPE_COMM_EST:
472 case MLX4_EVENT_TYPE_SQ_DRAINED:
473 case MLX4_EVENT_TYPE_SRQ_QP_LAST_WQE:
474 case MLX4_EVENT_TYPE_WQ_CATAS_ERROR:
475 case MLX4_EVENT_TYPE_PATH_MIG_FAILED:
476 case MLX4_EVENT_TYPE_WQ_INVAL_REQ_ERROR:
477 case MLX4_EVENT_TYPE_WQ_ACCESS_ERROR:
478 mlx4_dbg(dev, "event %d arrived\n", eqe->type);
479 if (mlx4_is_master(dev)) {
480 /* forward only to slave owning the QP */
481 ret = mlx4_get_slave_from_resource_id(dev,
483 be32_to_cpu(eqe->event.qp.qpn)
485 if (ret && ret != -ENOENT) {
486 mlx4_dbg(dev, "QP event %02x(%02x) on "
487 "EQ %d at index %u: could "
488 "not get slave id (%d)\n",
489 eqe->type, eqe->subtype,
490 eq->eqn, eq->cons_index, ret);
494 if (!ret && slave != dev->caps.function) {
495 mlx4_slave_event(dev, slave, eqe);
500 mlx4_qp_event(dev, be32_to_cpu(eqe->event.qp.qpn) &
501 0xffffff, eqe->type);
504 case MLX4_EVENT_TYPE_SRQ_LIMIT:
505 mlx4_dbg(dev, "%s: MLX4_EVENT_TYPE_SRQ_LIMIT\n",
508 case MLX4_EVENT_TYPE_SRQ_CATAS_ERROR:
509 if (mlx4_is_master(dev)) {
510 /* forward only to slave owning the SRQ */
511 ret = mlx4_get_slave_from_resource_id(dev,
513 be32_to_cpu(eqe->event.srq.srqn)
516 if (ret && ret != -ENOENT) {
517 mlx4_warn(dev, "SRQ event %02x(%02x) "
518 "on EQ %d at index %u: could"
519 " not get slave id (%d)\n",
520 eqe->type, eqe->subtype,
521 eq->eqn, eq->cons_index, ret);
524 mlx4_dbg(dev, "%s: slave:%d, srq_no:0x%x, event: %02x(%02x)\n",
526 be32_to_cpu(eqe->event.srq.srqn),
527 eqe->type, eqe->subtype);
529 if (!ret && slave != dev->caps.function) {
530 mlx4_dbg(dev, "%s: sending event %02x(%02x) to slave:%d\n",
532 eqe->subtype, slave);
533 mlx4_slave_event(dev, slave, eqe);
537 mlx4_srq_event(dev, be32_to_cpu(eqe->event.srq.srqn) &
538 0xffffff, eqe->type);
541 case MLX4_EVENT_TYPE_CMD:
543 be16_to_cpu(eqe->event.cmd.token),
544 eqe->event.cmd.status,
545 be64_to_cpu(eqe->event.cmd.out_param));
548 case MLX4_EVENT_TYPE_PORT_CHANGE:
549 port = be32_to_cpu(eqe->event.port_change.port) >> 28;
550 if (eqe->subtype == MLX4_PORT_CHANGE_SUBTYPE_DOWN) {
551 mlx4_dispatch_event(dev, MLX4_DEV_EVENT_PORT_DOWN,
553 mlx4_priv(dev)->sense.do_sense_port[port] = 1;
554 if (!mlx4_is_master(dev))
556 for (i = 0; i < dev->num_slaves; i++) {
557 if (dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH) {
558 if (i == mlx4_master_func_num(dev))
560 mlx4_dbg(dev, "%s: Sending MLX4_PORT_CHANGE_SUBTYPE_DOWN"
561 " to slave: %d, port:%d\n",
563 s_info = &priv->mfunc.master.vf_oper[slave].vport[port].state;
564 if (IFLA_VF_LINK_STATE_AUTO == s_info->link_state)
565 mlx4_slave_event(dev, i, eqe);
566 } else { /* IB port */
567 set_and_calc_slave_port_state(dev, i, port,
568 MLX4_PORT_STATE_DEV_EVENT_PORT_DOWN,
570 /*we can be in pending state, then do not send port_down event*/
571 if (SLAVE_PORT_GEN_EVENT_DOWN == gen_event) {
572 if (i == mlx4_master_func_num(dev))
574 mlx4_slave_event(dev, i, eqe);
579 mlx4_dispatch_event(dev, MLX4_DEV_EVENT_PORT_UP, port);
581 mlx4_priv(dev)->sense.do_sense_port[port] = 0;
583 if (!mlx4_is_master(dev))
585 if (dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH)
586 for (i = 0; i < dev->num_slaves; i++) {
587 if (i == mlx4_master_func_num(dev))
589 s_info = &priv->mfunc.master.vf_oper[slave].vport[port].state;
590 if (IFLA_VF_LINK_STATE_AUTO == s_info->link_state)
591 mlx4_slave_event(dev, i, eqe);
594 /* port-up event will be sent to a slave when the
595 * slave's alias-guid is set. This is done in alias_GUID.c
597 set_all_slave_state(dev, port, MLX4_DEV_EVENT_PORT_UP);
601 case MLX4_EVENT_TYPE_CQ_ERROR:
602 mlx4_warn(dev, "CQ %s on CQN %06x\n",
603 eqe->event.cq_err.syndrome == 1 ?
604 "overrun" : "access violation",
605 be32_to_cpu(eqe->event.cq_err.cqn) & 0xffffff);
606 if (mlx4_is_master(dev)) {
607 ret = mlx4_get_slave_from_resource_id(dev,
609 be32_to_cpu(eqe->event.cq_err.cqn)
611 if (ret && ret != -ENOENT) {
612 mlx4_dbg(dev, "CQ event %02x(%02x) on "
613 "EQ %d at index %u: could "
614 "not get slave id (%d)\n",
615 eqe->type, eqe->subtype,
616 eq->eqn, eq->cons_index, ret);
620 if (!ret && slave != dev->caps.function) {
621 mlx4_slave_event(dev, slave, eqe);
626 be32_to_cpu(eqe->event.cq_err.cqn)
631 case MLX4_EVENT_TYPE_EQ_OVERFLOW:
632 mlx4_warn(dev, "EQ overrun on EQN %d\n", eq->eqn);
635 case MLX4_EVENT_TYPE_OP_REQUIRED:
636 atomic_inc(&priv->opreq_count);
637 /* FW commands can't be executed from interrupt context
638 working in deferred task */
639 queue_work(mlx4_wq, &priv->opreq_task);
642 case MLX4_EVENT_TYPE_COMM_CHANNEL:
643 if (!mlx4_is_master(dev)) {
644 mlx4_warn(dev, "Received comm channel event "
645 "for non master device\n");
649 memcpy(&priv->mfunc.master.comm_arm_bit_vector,
650 eqe->event.comm_channel_arm.bit_vec,
651 sizeof eqe->event.comm_channel_arm.bit_vec);
653 if (!queue_work(priv->mfunc.master.comm_wq,
654 &priv->mfunc.master.comm_work))
655 mlx4_warn(dev, "Failed to queue comm channel work\n");
657 if (!queue_work(priv->mfunc.master.comm_wq,
658 &priv->mfunc.master.arm_comm_work))
659 mlx4_warn(dev, "Failed to queue arm comm channel work\n");
662 case MLX4_EVENT_TYPE_FLR_EVENT:
663 flr_slave = be32_to_cpu(eqe->event.flr_event.slave_id);
664 if (!mlx4_is_master(dev)) {
665 mlx4_warn(dev, "Non-master function received"
670 mlx4_dbg(dev, "FLR event for slave: %d\n", flr_slave);
672 if (flr_slave >= dev->num_slaves) {
674 "Got FLR for unknown function: %d\n",
676 update_slave_state = 0;
678 update_slave_state = 1;
680 spin_lock_irqsave(&priv->mfunc.master.slave_state_lock, flags);
681 if (update_slave_state) {
682 priv->mfunc.master.slave_state[flr_slave].active = false;
683 priv->mfunc.master.slave_state[flr_slave].last_cmd = MLX4_COMM_CMD_FLR;
684 priv->mfunc.master.slave_state[flr_slave].is_slave_going_down = 1;
686 spin_unlock_irqrestore(&priv->mfunc.master.slave_state_lock, flags);
687 queue_work(priv->mfunc.master.comm_wq,
688 &priv->mfunc.master.slave_flr_event_work);
691 case MLX4_EVENT_TYPE_FATAL_WARNING:
692 if (eqe->subtype == MLX4_FATAL_WARNING_SUBTYPE_WARMING) {
693 if (mlx4_is_master(dev))
694 for (i = 0; i < dev->num_slaves; i++) {
695 mlx4_dbg(dev, "%s: Sending "
696 "MLX4_FATAL_WARNING_SUBTYPE_WARMING"
697 " to slave: %d\n", __func__, i);
698 if (i == dev->caps.function)
700 mlx4_slave_event(dev, i, eqe);
702 mlx4_err(dev, "Temperature Threshold was reached! "
703 "Threshold: %d celsius degrees; "
704 "Current Temperature: %d\n",
705 be16_to_cpu(eqe->event.warming.warning_threshold),
706 be16_to_cpu(eqe->event.warming.current_temperature));
708 mlx4_warn(dev, "Unhandled event FATAL WARNING (%02x), "
709 "subtype %02x on EQ %d at index %u. owner=%x, "
710 "nent=0x%x, slave=%x, ownership=%s\n",
711 eqe->type, eqe->subtype, eq->eqn,
712 eq->cons_index, eqe->owner, eq->nent,
714 !!(eqe->owner & 0x80) ^
715 !!(eq->cons_index & eq->nent) ? "HW" : "SW");
719 case MLX4_EVENT_TYPE_PORT_MNG_CHG_EVENT:
720 mlx4_dispatch_event(dev, MLX4_DEV_EVENT_PORT_MGMT_CHANGE,
721 (unsigned long) eqe);
724 case MLX4_EVENT_TYPE_RECOVERABLE_ERROR_EVENT:
725 switch (eqe->subtype) {
726 case MLX4_RECOVERABLE_ERROR_EVENT_SUBTYPE_BAD_CABLE:
727 mlx4_warn(dev, "Bad cable detected on port %u\n",
728 eqe->event.bad_cable.port);
730 case MLX4_RECOVERABLE_ERROR_EVENT_SUBTYPE_UNSUPPORTED_CABLE:
731 mlx4_warn(dev, "Unsupported cable detected\n");
734 mlx4_dbg(dev, "Unhandled recoverable error event "
735 "detected: %02x(%02x) on EQ %d at index %u. "
736 "owner=%x, nent=0x%x, ownership=%s\n",
737 eqe->type, eqe->subtype, eq->eqn,
738 eq->cons_index, eqe->owner, eq->nent,
739 !!(eqe->owner & 0x80) ^
740 !!(eq->cons_index & eq->nent) ? "HW" : "SW");
745 case MLX4_EVENT_TYPE_EEC_CATAS_ERROR:
746 case MLX4_EVENT_TYPE_ECC_DETECT:
748 mlx4_warn(dev, "Unhandled event %02x(%02x) on EQ %d at "
749 "index %u. owner=%x, nent=0x%x, slave=%x, "
751 eqe->type, eqe->subtype, eq->eqn,
752 eq->cons_index, eqe->owner, eq->nent,
754 !!(eqe->owner & 0x80) ^
755 !!(eq->cons_index & eq->nent) ? "HW" : "SW");
764 * The HCA will think the queue has overflowed if we
765 * don't tell it we've been processing events. We
766 * create our EQs with MLX4_NUM_SPARE_EQE extra
767 * entries, so we must update our consumer index at
770 if (unlikely(set_ci >= MLX4_NUM_SPARE_EQE)) {
781 static irqreturn_t mlx4_interrupt(int irq, void *dev_ptr)
783 struct mlx4_dev *dev = dev_ptr;
784 struct mlx4_priv *priv = mlx4_priv(dev);
788 writel(priv->eq_table.clr_mask, priv->eq_table.clr_int);
790 for (i = 0; i < dev->caps.num_comp_vectors + 1; ++i)
791 work |= mlx4_eq_int(dev, &priv->eq_table.eq[i]);
793 return IRQ_RETVAL(work);
796 static irqreturn_t mlx4_msi_x_interrupt(int irq, void *eq_ptr)
798 struct mlx4_eq *eq = eq_ptr;
799 struct mlx4_dev *dev = eq->dev;
801 mlx4_eq_int(dev, eq);
803 /* MSI-X vectors always belong to us */
807 int mlx4_MAP_EQ_wrapper(struct mlx4_dev *dev, int slave,
808 struct mlx4_vhcr *vhcr,
809 struct mlx4_cmd_mailbox *inbox,
810 struct mlx4_cmd_mailbox *outbox,
811 struct mlx4_cmd_info *cmd)
813 struct mlx4_priv *priv = mlx4_priv(dev);
814 struct mlx4_slave_event_eq_info *event_eq =
815 priv->mfunc.master.slave_state[slave].event_eq;
816 u32 in_modifier = vhcr->in_modifier;
817 u32 eqn = in_modifier & 0x3FF;
818 u64 in_param = vhcr->in_param;
822 if (slave == dev->caps.function)
823 err = mlx4_cmd(dev, in_param, (in_modifier & 0x80000000) | eqn,
824 0, MLX4_CMD_MAP_EQ, MLX4_CMD_TIME_CLASS_B,
827 for (i = 0; i < MLX4_EVENT_TYPES_NUM; ++i)
828 if (in_param & (1LL << i))
829 event_eq[i].eqn = in_modifier >> 31 ? -1 : eqn;
834 static int mlx4_MAP_EQ(struct mlx4_dev *dev, u64 event_mask, int unmap,
837 return mlx4_cmd(dev, event_mask, (unmap << 31) | eq_num,
838 0, MLX4_CMD_MAP_EQ, MLX4_CMD_TIME_CLASS_B,
842 static int mlx4_SW2HW_EQ(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox,
845 return mlx4_cmd(dev, mailbox->dma, eq_num, 0,
846 MLX4_CMD_SW2HW_EQ, MLX4_CMD_TIME_CLASS_A,
850 static int mlx4_HW2SW_EQ(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox,
853 return mlx4_cmd_box(dev, 0, mailbox->dma, eq_num,
854 0, MLX4_CMD_HW2SW_EQ, MLX4_CMD_TIME_CLASS_A,
858 static int mlx4_num_eq_uar(struct mlx4_dev *dev)
861 * Each UAR holds 4 EQ doorbells. To figure out how many UARs
862 * we need to map, take the difference of highest index and
863 * the lowest index we'll use and add 1.
865 return (dev->caps.num_comp_vectors + 1 + dev->caps.reserved_eqs +
866 dev->caps.comp_pool)/4 - dev->caps.reserved_eqs/4 + 1;
869 static void __iomem *mlx4_get_eq_uar(struct mlx4_dev *dev, struct mlx4_eq *eq)
871 struct mlx4_priv *priv = mlx4_priv(dev);
874 index = eq->eqn / 4 - dev->caps.reserved_eqs / 4;
876 if (!priv->eq_table.uar_map[index]) {
877 priv->eq_table.uar_map[index] =
878 ioremap(pci_resource_start(dev->pdev, 2) +
879 ((eq->eqn / 4) << PAGE_SHIFT),
881 if (!priv->eq_table.uar_map[index]) {
882 mlx4_err(dev, "Couldn't map EQ doorbell for EQN 0x%06x\n",
888 return priv->eq_table.uar_map[index] + 0x800 + 8 * (eq->eqn % 4);
891 static void mlx4_unmap_uar(struct mlx4_dev *dev)
893 struct mlx4_priv *priv = mlx4_priv(dev);
896 for (i = 0; i < mlx4_num_eq_uar(dev); ++i)
897 if (priv->eq_table.uar_map[i]) {
898 iounmap(priv->eq_table.uar_map[i]);
899 priv->eq_table.uar_map[i] = NULL;
903 static int mlx4_create_eq(struct mlx4_dev *dev, int nent,
904 u8 intr, struct mlx4_eq *eq)
906 struct mlx4_priv *priv = mlx4_priv(dev);
907 struct mlx4_cmd_mailbox *mailbox;
908 struct mlx4_eq_context *eq_context;
910 u64 *dma_list = NULL;
917 eq->nent = roundup_pow_of_two(max(nent, 2));
918 /* CX3 is capable of extending the CQE\EQE from 32 to 64 bytes */
919 npages = PAGE_ALIGN(eq->nent * (MLX4_EQ_ENTRY_SIZE << dev->caps.eqe_factor)) / PAGE_SIZE;
921 eq->page_list = kmalloc(npages * sizeof *eq->page_list,
926 for (i = 0; i < npages; ++i)
927 eq->page_list[i].buf = NULL;
929 dma_list = kmalloc(npages * sizeof *dma_list, GFP_KERNEL);
933 mailbox = mlx4_alloc_cmd_mailbox(dev);
936 eq_context = mailbox->buf;
938 for (i = 0; i < npages; ++i) {
939 eq->page_list[i].buf = dma_alloc_coherent(&dev->pdev->dev,
940 PAGE_SIZE, &t, GFP_KERNEL);
941 if (!eq->page_list[i].buf)
942 goto err_out_free_pages;
945 eq->page_list[i].map = t;
947 memset(eq->page_list[i].buf, 0, PAGE_SIZE);
950 eq->eqn = mlx4_bitmap_alloc(&priv->eq_table.bitmap);
952 goto err_out_free_pages;
954 eq->doorbell = mlx4_get_eq_uar(dev, eq);
957 goto err_out_free_eq;
960 err = mlx4_mtt_init(dev, npages, PAGE_SHIFT, &eq->mtt);
962 goto err_out_free_eq;
964 err = mlx4_write_mtt(dev, &eq->mtt, 0, npages, dma_list);
966 goto err_out_free_mtt;
968 memset(eq_context, 0, sizeof *eq_context);
969 eq_context->flags = cpu_to_be32(MLX4_EQ_STATUS_OK |
970 MLX4_EQ_STATE_ARMED);
971 eq_context->log_eq_size = ilog2(eq->nent);
972 eq_context->intr = intr;
973 eq_context->log_page_size = PAGE_SHIFT - MLX4_ICM_PAGE_SHIFT;
975 mtt_addr = mlx4_mtt_addr(dev, &eq->mtt);
976 eq_context->mtt_base_addr_h = mtt_addr >> 32;
977 eq_context->mtt_base_addr_l = cpu_to_be32(mtt_addr & 0xffffffff);
979 err = mlx4_SW2HW_EQ(dev, mailbox, eq->eqn);
981 mlx4_warn(dev, "SW2HW_EQ failed (%d)\n", err);
982 goto err_out_free_mtt;
986 mlx4_free_cmd_mailbox(dev, mailbox);
993 mlx4_mtt_cleanup(dev, &eq->mtt);
996 mlx4_bitmap_free(&priv->eq_table.bitmap, eq->eqn, MLX4_USE_RR);
999 for (i = 0; i < npages; ++i)
1000 if (eq->page_list[i].buf)
1001 dma_free_coherent(&dev->pdev->dev, PAGE_SIZE,
1002 eq->page_list[i].buf,
1003 eq->page_list[i].map);
1005 mlx4_free_cmd_mailbox(dev, mailbox);
1008 kfree(eq->page_list);
1015 static void mlx4_free_eq(struct mlx4_dev *dev,
1018 struct mlx4_priv *priv = mlx4_priv(dev);
1019 struct mlx4_cmd_mailbox *mailbox;
1022 /* CX3 is capable of extending the CQE\EQE from 32 to 64 bytes */
1023 int npages = PAGE_ALIGN((MLX4_EQ_ENTRY_SIZE << dev->caps.eqe_factor) * eq->nent) / PAGE_SIZE;
1025 mailbox = mlx4_alloc_cmd_mailbox(dev);
1026 if (IS_ERR(mailbox))
1029 err = mlx4_HW2SW_EQ(dev, mailbox, eq->eqn);
1031 mlx4_warn(dev, "HW2SW_EQ failed (%d)\n", err);
1034 mlx4_dbg(dev, "Dumping EQ context %02x:\n", eq->eqn);
1035 for (i = 0; i < sizeof (struct mlx4_eq_context) / 4; ++i) {
1037 pr_cont("[%02x] ", i * 4);
1038 pr_cont(" %08x", be32_to_cpup(mailbox->buf + i * 4));
1039 if ((i + 1) % 4 == 0)
1044 mlx4_mtt_cleanup(dev, &eq->mtt);
1045 for (i = 0; i < npages; ++i)
1046 dma_free_coherent(&dev->pdev->dev, PAGE_SIZE,
1047 eq->page_list[i].buf,
1048 eq->page_list[i].map);
1050 kfree(eq->page_list);
1051 mlx4_bitmap_free(&priv->eq_table.bitmap, eq->eqn, MLX4_USE_RR);
1052 mlx4_free_cmd_mailbox(dev, mailbox);
1055 static void mlx4_free_irqs(struct mlx4_dev *dev)
1057 struct mlx4_eq_table *eq_table = &mlx4_priv(dev)->eq_table;
1058 struct mlx4_priv *priv = mlx4_priv(dev);
1061 if (eq_table->have_irq)
1062 free_irq(dev->pdev->irq, dev);
1064 for (i = 0; i < dev->caps.num_comp_vectors + 1; ++i)
1065 if (eq_table->eq[i].have_irq) {
1066 free_irq(eq_table->eq[i].irq, eq_table->eq + i);
1067 eq_table->eq[i].have_irq = 0;
1070 for (i = 0; i < dev->caps.comp_pool; i++) {
1072 * Freeing the assigned irq's
1073 * all bits should be 0, but we need to validate
1075 if (priv->msix_ctl.pool_bm & 1ULL << i) {
1076 /* NO need protecting*/
1077 vec = dev->caps.num_comp_vectors + 1 + i;
1078 free_irq(priv->eq_table.eq[vec].irq,
1079 &priv->eq_table.eq[vec]);
1084 kfree(eq_table->irq_names);
1087 static int mlx4_map_clr_int(struct mlx4_dev *dev)
1089 struct mlx4_priv *priv = mlx4_priv(dev);
1091 priv->clr_base = ioremap(pci_resource_start(dev->pdev, priv->fw.clr_int_bar) +
1092 priv->fw.clr_int_base, MLX4_CLR_INT_SIZE);
1093 if (!priv->clr_base) {
1094 mlx4_err(dev, "Couldn't map interrupt clear register, aborting.\n");
1101 static void mlx4_unmap_clr_int(struct mlx4_dev *dev)
1103 struct mlx4_priv *priv = mlx4_priv(dev);
1105 iounmap(priv->clr_base);
1108 int mlx4_alloc_eq_table(struct mlx4_dev *dev)
1110 struct mlx4_priv *priv = mlx4_priv(dev);
1112 priv->eq_table.eq = kcalloc(dev->caps.num_eqs - dev->caps.reserved_eqs,
1113 sizeof *priv->eq_table.eq, GFP_KERNEL);
1114 if (!priv->eq_table.eq)
1120 void mlx4_free_eq_table(struct mlx4_dev *dev)
1122 kfree(mlx4_priv(dev)->eq_table.eq);
1125 int mlx4_init_eq_table(struct mlx4_dev *dev)
1127 struct mlx4_priv *priv = mlx4_priv(dev);
1131 priv->eq_table.uar_map = kcalloc(mlx4_num_eq_uar(dev),
1132 sizeof *priv->eq_table.uar_map,
1134 if (!priv->eq_table.uar_map) {
1139 err = mlx4_bitmap_init(&priv->eq_table.bitmap, dev->caps.num_eqs,
1140 dev->caps.num_eqs - 1, dev->caps.reserved_eqs, 0);
1144 for (i = 0; i < mlx4_num_eq_uar(dev); ++i)
1145 priv->eq_table.uar_map[i] = NULL;
1147 if (!mlx4_is_slave(dev)) {
1148 err = mlx4_map_clr_int(dev);
1150 goto err_out_bitmap;
1152 priv->eq_table.clr_mask =
1153 swab32(1 << (priv->eq_table.inta_pin & 31));
1154 priv->eq_table.clr_int = priv->clr_base +
1155 (priv->eq_table.inta_pin < 32 ? 4 : 0);
1158 priv->eq_table.irq_names =
1159 kmalloc(MLX4_IRQNAME_SIZE * (dev->caps.num_comp_vectors + 1 +
1160 dev->caps.comp_pool),
1162 if (!priv->eq_table.irq_names) {
1164 goto err_out_clr_int;
1167 for (i = 0; i < dev->caps.num_comp_vectors; ++i) {
1168 err = mlx4_create_eq(dev, dev->caps.num_cqs -
1169 dev->caps.reserved_cqs +
1171 (dev->flags & MLX4_FLAG_MSI_X) ? i : 0,
1172 &priv->eq_table.eq[i]);
1179 err = mlx4_create_eq(dev, MLX4_NUM_ASYNC_EQE + MLX4_NUM_SPARE_EQE,
1180 (dev->flags & MLX4_FLAG_MSI_X) ? dev->caps.num_comp_vectors : 0,
1181 &priv->eq_table.eq[dev->caps.num_comp_vectors]);
1185 /*if additional completion vectors poolsize is 0 this loop will not run*/
1186 for (i = dev->caps.num_comp_vectors + 1;
1187 i < dev->caps.num_comp_vectors + dev->caps.comp_pool + 1; ++i) {
1189 err = mlx4_create_eq(dev, dev->caps.num_cqs -
1190 dev->caps.reserved_cqs +
1192 (dev->flags & MLX4_FLAG_MSI_X) ? i : 0,
1193 &priv->eq_table.eq[i]);
1201 if (dev->flags & MLX4_FLAG_MSI_X) {
1202 const char *eq_name;
1204 for (i = 0; i < dev->caps.num_comp_vectors + 1; ++i) {
1205 if (i < dev->caps.num_comp_vectors) {
1206 snprintf(priv->eq_table.irq_names +
1207 i * MLX4_IRQNAME_SIZE,
1209 "mlx4-comp-%d@pci:%s", i,
1210 pci_name(dev->pdev));
1212 snprintf(priv->eq_table.irq_names +
1213 i * MLX4_IRQNAME_SIZE,
1215 "mlx4-async@pci:%s",
1216 pci_name(dev->pdev));
1219 eq_name = priv->eq_table.irq_names +
1220 i * MLX4_IRQNAME_SIZE;
1221 err = request_irq(priv->eq_table.eq[i].irq,
1222 mlx4_msi_x_interrupt, 0, eq_name,
1223 priv->eq_table.eq + i);
1227 priv->eq_table.eq[i].have_irq = 1;
1230 snprintf(priv->eq_table.irq_names,
1233 pci_name(dev->pdev));
1234 err = request_irq(dev->pdev->irq, mlx4_interrupt,
1235 IRQF_SHARED, priv->eq_table.irq_names, dev);
1239 priv->eq_table.have_irq = 1;
1242 err = mlx4_MAP_EQ(dev, get_async_ev_mask(dev), 0,
1243 priv->eq_table.eq[dev->caps.num_comp_vectors].eqn);
1245 mlx4_warn(dev, "MAP_EQ for async EQ %d failed (%d)\n",
1246 priv->eq_table.eq[dev->caps.num_comp_vectors].eqn, err);
1248 for (i = 0; i < dev->caps.num_comp_vectors + 1; ++i)
1249 eq_set_ci(&priv->eq_table.eq[i], 1);
1254 mlx4_free_eq(dev, &priv->eq_table.eq[dev->caps.num_comp_vectors]);
1257 i = dev->caps.num_comp_vectors - 1;
1261 mlx4_free_eq(dev, &priv->eq_table.eq[i]);
1264 mlx4_free_irqs(dev);
1267 if (!mlx4_is_slave(dev))
1268 mlx4_unmap_clr_int(dev);
1271 mlx4_unmap_uar(dev);
1272 mlx4_bitmap_cleanup(&priv->eq_table.bitmap);
1275 kfree(priv->eq_table.uar_map);
1280 void mlx4_cleanup_eq_table(struct mlx4_dev *dev)
1282 struct mlx4_priv *priv = mlx4_priv(dev);
1285 mlx4_MAP_EQ(dev, get_async_ev_mask(dev), 1,
1286 priv->eq_table.eq[dev->caps.num_comp_vectors].eqn);
1288 mlx4_free_irqs(dev);
1290 for (i = 0; i < dev->caps.num_comp_vectors + dev->caps.comp_pool + 1; ++i)
1291 mlx4_free_eq(dev, &priv->eq_table.eq[i]);
1293 if (!mlx4_is_slave(dev))
1294 mlx4_unmap_clr_int(dev);
1296 mlx4_unmap_uar(dev);
1297 mlx4_bitmap_cleanup(&priv->eq_table.bitmap);
1299 kfree(priv->eq_table.uar_map);
1302 /* A test that verifies that we can accept interrupts on all
1303 * the irq vectors of the device.
1304 * Interrupts are checked using the NOP command.
1306 int mlx4_test_interrupts(struct mlx4_dev *dev)
1308 struct mlx4_priv *priv = mlx4_priv(dev);
1312 err = mlx4_NOP(dev);
1313 /* When not in MSI_X, there is only one irq to check */
1314 if (!(dev->flags & MLX4_FLAG_MSI_X) || mlx4_is_slave(dev))
1317 /* A loop over all completion vectors, for each vector we will check
1318 * whether it works by mapping command completions to that vector
1319 * and performing a NOP command
1321 for(i = 0; !err && (i < dev->caps.num_comp_vectors); ++i) {
1322 /* Temporary use polling for command completions */
1323 mlx4_cmd_use_polling(dev);
1325 /* Map the new eq to handle all asyncronous events */
1326 err = mlx4_MAP_EQ(dev, get_async_ev_mask(dev), 0,
1327 priv->eq_table.eq[i].eqn);
1329 mlx4_warn(dev, "Failed mapping eq for interrupt test\n");
1330 mlx4_cmd_use_events(dev);
1334 /* Go back to using events */
1335 mlx4_cmd_use_events(dev);
1336 err = mlx4_NOP(dev);
1339 /* Return to default */
1340 mlx4_MAP_EQ(dev, get_async_ev_mask(dev), 0,
1341 priv->eq_table.eq[dev->caps.num_comp_vectors].eqn);
1344 EXPORT_SYMBOL(mlx4_test_interrupts);
1346 int mlx4_assign_eq(struct mlx4_dev *dev, char* name, int * vector)
1349 struct mlx4_priv *priv = mlx4_priv(dev);
1350 int vec = 0, err = 0, i;
1352 mutex_lock(&priv->msix_ctl.pool_lock);
1353 for (i = 0; !vec && i < dev->caps.comp_pool; i++) {
1354 if (~priv->msix_ctl.pool_bm & 1ULL << i) {
1355 priv->msix_ctl.pool_bm |= 1ULL << i;
1356 vec = dev->caps.num_comp_vectors + 1 + i;
1357 snprintf(priv->eq_table.irq_names +
1358 vec * MLX4_IRQNAME_SIZE,
1359 MLX4_IRQNAME_SIZE, "%s", name);
1360 err = request_irq(priv->eq_table.eq[vec].irq,
1361 mlx4_msi_x_interrupt, 0,
1362 &priv->eq_table.irq_names[vec<<5],
1363 priv->eq_table.eq + vec);
1365 /*zero out bit by fliping it*/
1366 priv->msix_ctl.pool_bm ^= 1 << i;
1369 /*we dont want to break here*/
1371 eq_set_ci(&priv->eq_table.eq[vec], 1);
1374 mutex_unlock(&priv->msix_ctl.pool_lock);
1380 err = (i == dev->caps.comp_pool) ? -ENOSPC : err;
1384 EXPORT_SYMBOL(mlx4_assign_eq);
1386 void mlx4_release_eq(struct mlx4_dev *dev, int vec)
1388 struct mlx4_priv *priv = mlx4_priv(dev);
1390 int i = vec - dev->caps.num_comp_vectors - 1;
1392 if (likely(i >= 0)) {
1393 /*sanity check , making sure were not trying to free irq's
1394 Belonging to a legacy EQ*/
1395 mutex_lock(&priv->msix_ctl.pool_lock);
1396 if (priv->msix_ctl.pool_bm & 1ULL << i) {
1397 free_irq(priv->eq_table.eq[vec].irq,
1398 &priv->eq_table.eq[vec]);
1399 priv->msix_ctl.pool_bm &= ~(1ULL << i);
1401 mutex_unlock(&priv->msix_ctl.pool_lock);
1405 EXPORT_SYMBOL(mlx4_release_eq);