1 /* bnx2i_hwi.c: Broadcom NetXtreme II iSCSI driver.
3 * Copyright (c) 2006 - 2011 Broadcom Corporation
4 * Copyright (c) 2007, 2008 Red Hat, Inc. All rights reserved.
5 * Copyright (c) 2007, 2008 Mike Christie
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation.
11 * Written by: Anil Veerabhadrappa (anilgv@broadcom.com)
12 * Maintained by: Eddie Wai (eddie.wai@broadcom.com)
15 #include <linux/gfp.h>
16 #include <scsi/scsi_tcq.h>
17 #include <scsi/libiscsi.h>
20 DECLARE_PER_CPU(struct bnx2i_percpu_s
, bnx2i_percpu
);
23 * bnx2i_get_cid_num - get cid from ep
24 * @ep: endpoint pointer
26 * Only applicable to 57710 family of devices
28 static u32
bnx2i_get_cid_num(struct bnx2i_endpoint
*ep
)
32 if (test_bit(BNX2I_NX2_DEV_57710
, &ep
->hba
->cnic_dev_type
))
35 cid
= GET_CID_NUM(ep
->ep_cid
);
41 * bnx2i_adjust_qp_size - Adjust SQ/RQ/CQ size for 57710 device type
42 * @hba: Adapter for which adjustments is to be made
44 * Only applicable to 57710 family of devices
46 static void bnx2i_adjust_qp_size(struct bnx2i_hba
*hba
)
48 u32 num_elements_per_pg
;
50 if (test_bit(BNX2I_NX2_DEV_5706
, &hba
->cnic_dev_type
) ||
51 test_bit(BNX2I_NX2_DEV_5708
, &hba
->cnic_dev_type
) ||
52 test_bit(BNX2I_NX2_DEV_5709
, &hba
->cnic_dev_type
)) {
53 if (!is_power_of_2(hba
->max_sqes
))
54 hba
->max_sqes
= rounddown_pow_of_two(hba
->max_sqes
);
56 if (!is_power_of_2(hba
->max_rqes
))
57 hba
->max_rqes
= rounddown_pow_of_two(hba
->max_rqes
);
60 /* Adjust each queue size if the user selection does not
61 * yield integral num of page buffers
64 num_elements_per_pg
= PAGE_SIZE
/ BNX2I_SQ_WQE_SIZE
;
65 if (hba
->max_sqes
< num_elements_per_pg
)
66 hba
->max_sqes
= num_elements_per_pg
;
67 else if (hba
->max_sqes
% num_elements_per_pg
)
68 hba
->max_sqes
= (hba
->max_sqes
+ num_elements_per_pg
- 1) &
69 ~(num_elements_per_pg
- 1);
72 num_elements_per_pg
= PAGE_SIZE
/ BNX2I_CQE_SIZE
;
73 if (hba
->max_cqes
< num_elements_per_pg
)
74 hba
->max_cqes
= num_elements_per_pg
;
75 else if (hba
->max_cqes
% num_elements_per_pg
)
76 hba
->max_cqes
= (hba
->max_cqes
+ num_elements_per_pg
- 1) &
77 ~(num_elements_per_pg
- 1);
80 num_elements_per_pg
= PAGE_SIZE
/ BNX2I_RQ_WQE_SIZE
;
81 if (hba
->max_rqes
< num_elements_per_pg
)
82 hba
->max_rqes
= num_elements_per_pg
;
83 else if (hba
->max_rqes
% num_elements_per_pg
)
84 hba
->max_rqes
= (hba
->max_rqes
+ num_elements_per_pg
- 1) &
85 ~(num_elements_per_pg
- 1);
90 * bnx2i_get_link_state - get network interface link state
91 * @hba: adapter instance pointer
93 * updates adapter structure flag based on netdev state
95 static void bnx2i_get_link_state(struct bnx2i_hba
*hba
)
97 if (test_bit(__LINK_STATE_NOCARRIER
, &hba
->netdev
->state
))
98 set_bit(ADAPTER_STATE_LINK_DOWN
, &hba
->adapter_state
);
100 clear_bit(ADAPTER_STATE_LINK_DOWN
, &hba
->adapter_state
);
105 * bnx2i_iscsi_license_error - displays iscsi license related error message
106 * @hba: adapter instance pointer
107 * @error_code: error classification
109 * Puts out an error log when driver is unable to offload iscsi connection
110 * due to license restrictions
112 static void bnx2i_iscsi_license_error(struct bnx2i_hba
*hba
, u32 error_code
)
114 if (error_code
== ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED
)
115 /* iSCSI offload not supported on this device */
116 printk(KERN_ERR
"bnx2i: iSCSI not supported, dev=%s\n",
118 if (error_code
== ISCSI_KCQE_COMPLETION_STATUS_LOM_ISCSI_NOT_ENABLED
)
119 /* iSCSI offload not supported on this LOM device */
120 printk(KERN_ERR
"bnx2i: LOM is not enable to "
121 "offload iSCSI connections, dev=%s\n",
123 set_bit(ADAPTER_STATE_INIT_FAILED
, &hba
->adapter_state
);
128 * bnx2i_arm_cq_event_coalescing - arms CQ to enable EQ notification
129 * @ep: endpoint (transport indentifier) structure
130 * @action: action, ARM or DISARM. For now only ARM_CQE is used
132 * Arm'ing CQ will enable chip to generate global EQ events inorder to interrupt
133 * the driver. EQ event is generated CQ index is hit or at least 1 CQ is
134 * outstanding and on chip timer expires
136 int bnx2i_arm_cq_event_coalescing(struct bnx2i_endpoint
*ep
, u8 action
)
138 struct bnx2i_5771x_cq_db
*cq_db
;
143 /* Coalesce CQ entries only on 10G devices */
144 if (!test_bit(BNX2I_NX2_DEV_57710
, &ep
->hba
->cnic_dev_type
))
147 /* Do not update CQ DB multiple times before firmware writes
148 * '0xFFFF' to CQDB->SQN field. Deviation may cause spurious
149 * interrupts and other unwanted results
151 cq_db
= (struct bnx2i_5771x_cq_db
*) ep
->qp
.cq_pgtbl_virt
;
153 if (action
!= CNIC_ARM_CQE_FP
)
154 if (cq_db
->sqn
[0] && cq_db
->sqn
[0] != 0xFFFF)
157 if (action
== CNIC_ARM_CQE
|| action
== CNIC_ARM_CQE_FP
) {
158 num_active_cmds
= atomic_read(&ep
->num_active_cmds
);
159 if (num_active_cmds
<= event_coal_min
)
162 next_index
= num_active_cmds
>> ep
->ec_shift
;
163 if (next_index
> num_active_cmds
- event_coal_min
)
164 next_index
= num_active_cmds
- event_coal_min
;
168 cq_index
= ep
->qp
.cqe_exp_seq_sn
+ next_index
- 1;
169 if (cq_index
> ep
->qp
.cqe_size
* 2)
170 cq_index
-= ep
->qp
.cqe_size
* 2;
174 cq_db
->sqn
[0] = cq_index
;
181 * bnx2i_get_rq_buf - copy RQ buffer contents to driver buffer
182 * @conn: iscsi connection on which RQ event occurred
183 * @ptr: driver buffer to which RQ buffer contents is to
185 * @len: length of valid data inside RQ buf
187 * Copies RQ buffer contents from shared (DMA'able) memory region to
188 * driver buffer. RQ is used to DMA unsolicitated iscsi pdu's and
191 void bnx2i_get_rq_buf(struct bnx2i_conn
*bnx2i_conn
, char *ptr
, int len
)
193 if (!bnx2i_conn
->ep
->qp
.rqe_left
)
196 bnx2i_conn
->ep
->qp
.rqe_left
--;
197 memcpy(ptr
, (u8
*) bnx2i_conn
->ep
->qp
.rq_cons_qe
, len
);
198 if (bnx2i_conn
->ep
->qp
.rq_cons_qe
== bnx2i_conn
->ep
->qp
.rq_last_qe
) {
199 bnx2i_conn
->ep
->qp
.rq_cons_qe
= bnx2i_conn
->ep
->qp
.rq_first_qe
;
200 bnx2i_conn
->ep
->qp
.rq_cons_idx
= 0;
202 bnx2i_conn
->ep
->qp
.rq_cons_qe
++;
203 bnx2i_conn
->ep
->qp
.rq_cons_idx
++;
208 static void bnx2i_ring_577xx_doorbell(struct bnx2i_conn
*conn
)
210 struct bnx2i_5771x_dbell dbell
;
213 memset(&dbell
, 0, sizeof(dbell
));
214 dbell
.dbell
.header
= (B577XX_ISCSI_CONNECTION_TYPE
<<
215 B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT
);
216 msg
= *((u32
*)&dbell
);
217 /* TODO : get doorbell register mapping */
218 writel(cpu_to_le32(msg
), conn
->ep
->qp
.ctx_base
);
223 * bnx2i_put_rq_buf - Replenish RQ buffer, if required ring on chip doorbell
224 * @conn: iscsi connection on which event to post
225 * @count: number of RQ buffer being posted to chip
227 * No need to ring hardware doorbell for 57710 family of devices
229 void bnx2i_put_rq_buf(struct bnx2i_conn
*bnx2i_conn
, int count
)
231 struct bnx2i_5771x_sq_rq_db
*rq_db
;
232 u16 hi_bit
= (bnx2i_conn
->ep
->qp
.rq_prod_idx
& 0x8000);
233 struct bnx2i_endpoint
*ep
= bnx2i_conn
->ep
;
235 ep
->qp
.rqe_left
+= count
;
236 ep
->qp
.rq_prod_idx
&= 0x7FFF;
237 ep
->qp
.rq_prod_idx
+= count
;
239 if (ep
->qp
.rq_prod_idx
> bnx2i_conn
->hba
->max_rqes
) {
240 ep
->qp
.rq_prod_idx
%= bnx2i_conn
->hba
->max_rqes
;
242 ep
->qp
.rq_prod_idx
|= 0x8000;
244 ep
->qp
.rq_prod_idx
|= hi_bit
;
246 if (test_bit(BNX2I_NX2_DEV_57710
, &ep
->hba
->cnic_dev_type
)) {
247 rq_db
= (struct bnx2i_5771x_sq_rq_db
*) ep
->qp
.rq_pgtbl_virt
;
248 rq_db
->prod_idx
= ep
->qp
.rq_prod_idx
;
249 /* no need to ring hardware doorbell for 57710 */
251 writew(ep
->qp
.rq_prod_idx
,
252 ep
->qp
.ctx_base
+ CNIC_RECV_DOORBELL
);
259 * bnx2i_ring_sq_dbell - Ring SQ doorbell to wake-up the processing engine
260 * @conn: iscsi connection to which new SQ entries belong
261 * @count: number of SQ WQEs to post
263 * SQ DB is updated in host memory and TX Doorbell is rung for 57710 family
264 * of devices. For 5706/5708/5709 new SQ WQE count is written into the
267 static void bnx2i_ring_sq_dbell(struct bnx2i_conn
*bnx2i_conn
, int count
)
269 struct bnx2i_5771x_sq_rq_db
*sq_db
;
270 struct bnx2i_endpoint
*ep
= bnx2i_conn
->ep
;
272 atomic_inc(&ep
->num_active_cmds
);
273 wmb(); /* flush SQ WQE memory before the doorbell is rung */
274 if (test_bit(BNX2I_NX2_DEV_57710
, &ep
->hba
->cnic_dev_type
)) {
275 sq_db
= (struct bnx2i_5771x_sq_rq_db
*) ep
->qp
.sq_pgtbl_virt
;
276 sq_db
->prod_idx
= ep
->qp
.sq_prod_idx
;
277 bnx2i_ring_577xx_doorbell(bnx2i_conn
);
279 writew(count
, ep
->qp
.ctx_base
+ CNIC_SEND_DOORBELL
);
281 mmiowb(); /* flush posted PCI writes */
286 * bnx2i_ring_dbell_update_sq_params - update SQ driver parameters
287 * @conn: iscsi connection to which new SQ entries belong
288 * @count: number of SQ WQEs to post
290 * this routine will update SQ driver parameters and ring the doorbell
292 static void bnx2i_ring_dbell_update_sq_params(struct bnx2i_conn
*bnx2i_conn
,
298 if (bnx2i_conn
->ep
->qp
.sq_prod_qe
==
299 bnx2i_conn
->ep
->qp
.sq_last_qe
)
300 bnx2i_conn
->ep
->qp
.sq_prod_qe
=
301 bnx2i_conn
->ep
->qp
.sq_first_qe
;
303 bnx2i_conn
->ep
->qp
.sq_prod_qe
++;
305 if ((bnx2i_conn
->ep
->qp
.sq_prod_qe
+ count
) <=
306 bnx2i_conn
->ep
->qp
.sq_last_qe
)
307 bnx2i_conn
->ep
->qp
.sq_prod_qe
+= count
;
309 tmp_cnt
= bnx2i_conn
->ep
->qp
.sq_last_qe
-
310 bnx2i_conn
->ep
->qp
.sq_prod_qe
;
311 bnx2i_conn
->ep
->qp
.sq_prod_qe
=
312 &bnx2i_conn
->ep
->qp
.sq_first_qe
[count
-
316 bnx2i_conn
->ep
->qp
.sq_prod_idx
+= count
;
317 /* Ring the doorbell */
318 bnx2i_ring_sq_dbell(bnx2i_conn
, bnx2i_conn
->ep
->qp
.sq_prod_idx
);
323 * bnx2i_send_iscsi_login - post iSCSI login request MP WQE to hardware
324 * @conn: iscsi connection
325 * @cmd: driver command structure which is requesting
326 * a WQE to sent to chip for further processing
328 * prepare and post an iSCSI Login request WQE to CNIC firmware
330 int bnx2i_send_iscsi_login(struct bnx2i_conn
*bnx2i_conn
,
331 struct iscsi_task
*task
)
333 struct bnx2i_cmd
*bnx2i_cmd
;
334 struct bnx2i_login_request
*login_wqe
;
335 struct iscsi_login_req
*login_hdr
;
338 bnx2i_cmd
= (struct bnx2i_cmd
*)task
->dd_data
;
339 login_hdr
= (struct iscsi_login_req
*)task
->hdr
;
340 login_wqe
= (struct bnx2i_login_request
*)
341 bnx2i_conn
->ep
->qp
.sq_prod_qe
;
343 login_wqe
->op_code
= login_hdr
->opcode
;
344 login_wqe
->op_attr
= login_hdr
->flags
;
345 login_wqe
->version_max
= login_hdr
->max_version
;
346 login_wqe
->version_min
= login_hdr
->min_version
;
347 login_wqe
->data_length
= ntoh24(login_hdr
->dlength
);
348 login_wqe
->isid_lo
= *((u32
*) login_hdr
->isid
);
349 login_wqe
->isid_hi
= *((u16
*) login_hdr
->isid
+ 2);
350 login_wqe
->tsih
= login_hdr
->tsih
;
351 login_wqe
->itt
= task
->itt
|
352 (ISCSI_TASK_TYPE_MPATH
<< ISCSI_LOGIN_REQUEST_TYPE_SHIFT
);
353 login_wqe
->cid
= login_hdr
->cid
;
355 login_wqe
->cmd_sn
= be32_to_cpu(login_hdr
->cmdsn
);
356 login_wqe
->exp_stat_sn
= be32_to_cpu(login_hdr
->exp_statsn
);
357 login_wqe
->flags
= ISCSI_LOGIN_REQUEST_UPDATE_EXP_STAT_SN
;
359 login_wqe
->resp_bd_list_addr_lo
= (u32
) bnx2i_conn
->gen_pdu
.resp_bd_dma
;
360 login_wqe
->resp_bd_list_addr_hi
=
361 (u32
) ((u64
) bnx2i_conn
->gen_pdu
.resp_bd_dma
>> 32);
363 dword
= ((1 << ISCSI_LOGIN_REQUEST_NUM_RESP_BDS_SHIFT
) |
364 (bnx2i_conn
->gen_pdu
.resp_buf_size
<<
365 ISCSI_LOGIN_REQUEST_RESP_BUFFER_LENGTH_SHIFT
));
366 login_wqe
->resp_buffer
= dword
;
367 login_wqe
->bd_list_addr_lo
= (u32
) bnx2i_conn
->gen_pdu
.req_bd_dma
;
368 login_wqe
->bd_list_addr_hi
=
369 (u32
) ((u64
) bnx2i_conn
->gen_pdu
.req_bd_dma
>> 32);
370 login_wqe
->num_bds
= 1;
371 login_wqe
->cq_index
= 0; /* CQ# used for completion, 5771x only */
373 bnx2i_ring_dbell_update_sq_params(bnx2i_conn
, 1);
378 * bnx2i_send_iscsi_tmf - post iSCSI task management request MP WQE to hardware
379 * @conn: iscsi connection
380 * @mtask: driver command structure which is requesting
381 * a WQE to sent to chip for further processing
383 * prepare and post an iSCSI Login request WQE to CNIC firmware
385 int bnx2i_send_iscsi_tmf(struct bnx2i_conn
*bnx2i_conn
,
386 struct iscsi_task
*mtask
)
388 struct iscsi_conn
*conn
= bnx2i_conn
->cls_conn
->dd_data
;
389 struct iscsi_tm
*tmfabort_hdr
;
390 struct scsi_cmnd
*ref_sc
;
391 struct iscsi_task
*ctask
;
392 struct bnx2i_cmd
*bnx2i_cmd
;
393 struct bnx2i_tmf_request
*tmfabort_wqe
;
397 bnx2i_cmd
= (struct bnx2i_cmd
*)mtask
->dd_data
;
398 tmfabort_hdr
= (struct iscsi_tm
*)mtask
->hdr
;
399 tmfabort_wqe
= (struct bnx2i_tmf_request
*)
400 bnx2i_conn
->ep
->qp
.sq_prod_qe
;
402 tmfabort_wqe
->op_code
= tmfabort_hdr
->opcode
;
403 tmfabort_wqe
->op_attr
= tmfabort_hdr
->flags
;
405 tmfabort_wqe
->itt
= (mtask
->itt
| (ISCSI_TASK_TYPE_MPATH
<< 14));
406 tmfabort_wqe
->reserved2
= 0;
407 tmfabort_wqe
->cmd_sn
= be32_to_cpu(tmfabort_hdr
->cmdsn
);
409 switch (tmfabort_hdr
->flags
& ISCSI_FLAG_TM_FUNC_MASK
) {
410 case ISCSI_TM_FUNC_ABORT_TASK
:
411 case ISCSI_TM_FUNC_TASK_REASSIGN
:
412 ctask
= iscsi_itt_to_task(conn
, tmfabort_hdr
->rtt
);
413 if (!ctask
|| !ctask
->sc
)
415 * the iscsi layer must have completed the cmd while
418 * Note: In the case of a SCSI cmd timeout, the task's
419 * sc is still active; hence ctask->sc != 0
420 * In this case, the task must be aborted
425 if (ref_sc
->sc_data_direction
== DMA_TO_DEVICE
)
426 dword
= (ISCSI_TASK_TYPE_WRITE
<<
427 ISCSI_CMD_REQUEST_TYPE_SHIFT
);
429 dword
= (ISCSI_TASK_TYPE_READ
<<
430 ISCSI_CMD_REQUEST_TYPE_SHIFT
);
431 tmfabort_wqe
->ref_itt
= (dword
|
432 (tmfabort_hdr
->rtt
& ISCSI_ITT_MASK
));
435 tmfabort_wqe
->ref_itt
= RESERVED_ITT
;
437 memcpy(scsi_lun
, &tmfabort_hdr
->lun
, sizeof(struct scsi_lun
));
438 tmfabort_wqe
->lun
[0] = be32_to_cpu(scsi_lun
[0]);
439 tmfabort_wqe
->lun
[1] = be32_to_cpu(scsi_lun
[1]);
441 tmfabort_wqe
->ref_cmd_sn
= be32_to_cpu(tmfabort_hdr
->refcmdsn
);
443 tmfabort_wqe
->bd_list_addr_lo
= (u32
) bnx2i_conn
->hba
->mp_bd_dma
;
444 tmfabort_wqe
->bd_list_addr_hi
= (u32
)
445 ((u64
) bnx2i_conn
->hba
->mp_bd_dma
>> 32);
446 tmfabort_wqe
->num_bds
= 1;
447 tmfabort_wqe
->cq_index
= 0; /* CQ# used for completion, 5771x only */
449 bnx2i_ring_dbell_update_sq_params(bnx2i_conn
, 1);
454 * bnx2i_send_iscsi_text - post iSCSI text WQE to hardware
455 * @conn: iscsi connection
456 * @mtask: driver command structure which is requesting
457 * a WQE to sent to chip for further processing
459 * prepare and post an iSCSI Text request WQE to CNIC firmware
461 int bnx2i_send_iscsi_text(struct bnx2i_conn
*bnx2i_conn
,
462 struct iscsi_task
*mtask
)
464 struct bnx2i_cmd
*bnx2i_cmd
;
465 struct bnx2i_text_request
*text_wqe
;
466 struct iscsi_text
*text_hdr
;
469 bnx2i_cmd
= (struct bnx2i_cmd
*)mtask
->dd_data
;
470 text_hdr
= (struct iscsi_text
*)mtask
->hdr
;
471 text_wqe
= (struct bnx2i_text_request
*) bnx2i_conn
->ep
->qp
.sq_prod_qe
;
473 memset(text_wqe
, 0, sizeof(struct bnx2i_text_request
));
475 text_wqe
->op_code
= text_hdr
->opcode
;
476 text_wqe
->op_attr
= text_hdr
->flags
;
477 text_wqe
->data_length
= ntoh24(text_hdr
->dlength
);
478 text_wqe
->itt
= mtask
->itt
|
479 (ISCSI_TASK_TYPE_MPATH
<< ISCSI_TEXT_REQUEST_TYPE_SHIFT
);
480 text_wqe
->ttt
= be32_to_cpu(text_hdr
->ttt
);
482 text_wqe
->cmd_sn
= be32_to_cpu(text_hdr
->cmdsn
);
484 text_wqe
->resp_bd_list_addr_lo
= (u32
) bnx2i_conn
->gen_pdu
.resp_bd_dma
;
485 text_wqe
->resp_bd_list_addr_hi
=
486 (u32
) ((u64
) bnx2i_conn
->gen_pdu
.resp_bd_dma
>> 32);
488 dword
= ((1 << ISCSI_TEXT_REQUEST_NUM_RESP_BDS_SHIFT
) |
489 (bnx2i_conn
->gen_pdu
.resp_buf_size
<<
490 ISCSI_TEXT_REQUEST_RESP_BUFFER_LENGTH_SHIFT
));
491 text_wqe
->resp_buffer
= dword
;
492 text_wqe
->bd_list_addr_lo
= (u32
) bnx2i_conn
->gen_pdu
.req_bd_dma
;
493 text_wqe
->bd_list_addr_hi
=
494 (u32
) ((u64
) bnx2i_conn
->gen_pdu
.req_bd_dma
>> 32);
495 text_wqe
->num_bds
= 1;
496 text_wqe
->cq_index
= 0; /* CQ# used for completion, 5771x only */
498 bnx2i_ring_dbell_update_sq_params(bnx2i_conn
, 1);
504 * bnx2i_send_iscsi_scsicmd - post iSCSI scsicmd request WQE to hardware
505 * @conn: iscsi connection
506 * @cmd: driver command structure which is requesting
507 * a WQE to sent to chip for further processing
509 * prepare and post an iSCSI SCSI-CMD request WQE to CNIC firmware
511 int bnx2i_send_iscsi_scsicmd(struct bnx2i_conn
*bnx2i_conn
,
512 struct bnx2i_cmd
*cmd
)
514 struct bnx2i_cmd_request
*scsi_cmd_wqe
;
516 scsi_cmd_wqe
= (struct bnx2i_cmd_request
*)
517 bnx2i_conn
->ep
->qp
.sq_prod_qe
;
518 memcpy(scsi_cmd_wqe
, &cmd
->req
, sizeof(struct bnx2i_cmd_request
));
519 scsi_cmd_wqe
->cq_index
= 0; /* CQ# used for completion, 5771x only */
521 bnx2i_ring_dbell_update_sq_params(bnx2i_conn
, 1);
526 * bnx2i_send_iscsi_nopout - post iSCSI NOPOUT request WQE to hardware
527 * @conn: iscsi connection
528 * @cmd: driver command structure which is requesting
529 * a WQE to sent to chip for further processing
530 * @datap: payload buffer pointer
531 * @data_len: payload data length
532 * @unsol: indicated whether nopout pdu is unsolicited pdu or
533 * in response to target's NOPIN w/ TTT != FFFFFFFF
535 * prepare and post a nopout request WQE to CNIC firmware
537 int bnx2i_send_iscsi_nopout(struct bnx2i_conn
*bnx2i_conn
,
538 struct iscsi_task
*task
,
539 char *datap
, int data_len
, int unsol
)
541 struct bnx2i_endpoint
*ep
= bnx2i_conn
->ep
;
542 struct bnx2i_cmd
*bnx2i_cmd
;
543 struct bnx2i_nop_out_request
*nopout_wqe
;
544 struct iscsi_nopout
*nopout_hdr
;
546 bnx2i_cmd
= (struct bnx2i_cmd
*)task
->dd_data
;
547 nopout_hdr
= (struct iscsi_nopout
*)task
->hdr
;
548 nopout_wqe
= (struct bnx2i_nop_out_request
*)ep
->qp
.sq_prod_qe
;
550 memset(nopout_wqe
, 0x00, sizeof(struct bnx2i_nop_out_request
));
552 nopout_wqe
->op_code
= nopout_hdr
->opcode
;
553 nopout_wqe
->op_attr
= ISCSI_FLAG_CMD_FINAL
;
554 memcpy(nopout_wqe
->lun
, &nopout_hdr
->lun
, 8);
556 if (test_bit(BNX2I_NX2_DEV_57710
, &ep
->hba
->cnic_dev_type
)) {
557 u32 tmp
= nopout_wqe
->lun
[0];
558 /* 57710 requires LUN field to be swapped */
559 nopout_wqe
->lun
[0] = nopout_wqe
->lun
[1];
560 nopout_wqe
->lun
[1] = tmp
;
563 nopout_wqe
->itt
= ((u16
)task
->itt
|
564 (ISCSI_TASK_TYPE_MPATH
<<
565 ISCSI_TMF_REQUEST_TYPE_SHIFT
));
566 nopout_wqe
->ttt
= be32_to_cpu(nopout_hdr
->ttt
);
567 nopout_wqe
->flags
= 0;
569 nopout_wqe
->flags
= ISCSI_NOP_OUT_REQUEST_LOCAL_COMPLETION
;
570 else if (nopout_hdr
->itt
== RESERVED_ITT
)
571 nopout_wqe
->flags
= ISCSI_NOP_OUT_REQUEST_LOCAL_COMPLETION
;
573 nopout_wqe
->cmd_sn
= be32_to_cpu(nopout_hdr
->cmdsn
);
574 nopout_wqe
->data_length
= data_len
;
576 /* handle payload data, not required in first release */
577 printk(KERN_ALERT
"NOPOUT: WARNING!! payload len != 0\n");
579 nopout_wqe
->bd_list_addr_lo
= (u32
)
580 bnx2i_conn
->hba
->mp_bd_dma
;
581 nopout_wqe
->bd_list_addr_hi
=
582 (u32
) ((u64
) bnx2i_conn
->hba
->mp_bd_dma
>> 32);
583 nopout_wqe
->num_bds
= 1;
585 nopout_wqe
->cq_index
= 0; /* CQ# used for completion, 5771x only */
587 bnx2i_ring_dbell_update_sq_params(bnx2i_conn
, 1);
593 * bnx2i_send_iscsi_logout - post iSCSI logout request WQE to hardware
594 * @conn: iscsi connection
595 * @cmd: driver command structure which is requesting
596 * a WQE to sent to chip for further processing
598 * prepare and post logout request WQE to CNIC firmware
600 int bnx2i_send_iscsi_logout(struct bnx2i_conn
*bnx2i_conn
,
601 struct iscsi_task
*task
)
603 struct bnx2i_cmd
*bnx2i_cmd
;
604 struct bnx2i_logout_request
*logout_wqe
;
605 struct iscsi_logout
*logout_hdr
;
607 bnx2i_cmd
= (struct bnx2i_cmd
*)task
->dd_data
;
608 logout_hdr
= (struct iscsi_logout
*)task
->hdr
;
610 logout_wqe
= (struct bnx2i_logout_request
*)
611 bnx2i_conn
->ep
->qp
.sq_prod_qe
;
612 memset(logout_wqe
, 0x00, sizeof(struct bnx2i_logout_request
));
614 logout_wqe
->op_code
= logout_hdr
->opcode
;
615 logout_wqe
->cmd_sn
= be32_to_cpu(logout_hdr
->cmdsn
);
616 logout_wqe
->op_attr
=
617 logout_hdr
->flags
| ISCSI_LOGOUT_REQUEST_ALWAYS_ONE
;
618 logout_wqe
->itt
= ((u16
)task
->itt
|
619 (ISCSI_TASK_TYPE_MPATH
<<
620 ISCSI_LOGOUT_REQUEST_TYPE_SHIFT
));
621 logout_wqe
->data_length
= 0;
624 logout_wqe
->bd_list_addr_lo
= (u32
) bnx2i_conn
->hba
->mp_bd_dma
;
625 logout_wqe
->bd_list_addr_hi
= (u32
)
626 ((u64
) bnx2i_conn
->hba
->mp_bd_dma
>> 32);
627 logout_wqe
->num_bds
= 1;
628 logout_wqe
->cq_index
= 0; /* CQ# used for completion, 5771x only */
630 bnx2i_conn
->ep
->state
= EP_STATE_LOGOUT_SENT
;
632 bnx2i_ring_dbell_update_sq_params(bnx2i_conn
, 1);
638 * bnx2i_update_iscsi_conn - post iSCSI logout request WQE to hardware
639 * @conn: iscsi connection which requires iscsi parameter update
641 * sends down iSCSI Conn Update request to move iSCSI conn to FFP
643 void bnx2i_update_iscsi_conn(struct iscsi_conn
*conn
)
645 struct bnx2i_conn
*bnx2i_conn
= conn
->dd_data
;
646 struct bnx2i_hba
*hba
= bnx2i_conn
->hba
;
647 struct kwqe
*kwqe_arr
[2];
648 struct iscsi_kwqe_conn_update
*update_wqe
;
649 struct iscsi_kwqe_conn_update conn_update_kwqe
;
651 update_wqe
= &conn_update_kwqe
;
653 update_wqe
->hdr
.op_code
= ISCSI_KWQE_OPCODE_UPDATE_CONN
;
654 update_wqe
->hdr
.flags
=
655 (ISCSI_KWQE_LAYER_CODE
<< ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT
);
657 /* 5771x requires conn context id to be passed as is */
658 if (test_bit(BNX2I_NX2_DEV_57710
, &bnx2i_conn
->ep
->hba
->cnic_dev_type
))
659 update_wqe
->context_id
= bnx2i_conn
->ep
->ep_cid
;
661 update_wqe
->context_id
= (bnx2i_conn
->ep
->ep_cid
>> 7);
662 update_wqe
->conn_flags
= 0;
663 if (conn
->hdrdgst_en
)
664 update_wqe
->conn_flags
|= ISCSI_KWQE_CONN_UPDATE_HEADER_DIGEST
;
665 if (conn
->datadgst_en
)
666 update_wqe
->conn_flags
|= ISCSI_KWQE_CONN_UPDATE_DATA_DIGEST
;
667 if (conn
->session
->initial_r2t_en
)
668 update_wqe
->conn_flags
|= ISCSI_KWQE_CONN_UPDATE_INITIAL_R2T
;
669 if (conn
->session
->imm_data_en
)
670 update_wqe
->conn_flags
|= ISCSI_KWQE_CONN_UPDATE_IMMEDIATE_DATA
;
672 update_wqe
->max_send_pdu_length
= conn
->max_xmit_dlength
;
673 update_wqe
->max_recv_pdu_length
= conn
->max_recv_dlength
;
674 update_wqe
->first_burst_length
= conn
->session
->first_burst
;
675 update_wqe
->max_burst_length
= conn
->session
->max_burst
;
676 update_wqe
->exp_stat_sn
= conn
->exp_statsn
;
677 update_wqe
->max_outstanding_r2ts
= conn
->session
->max_r2t
;
678 update_wqe
->session_error_recovery_level
= conn
->session
->erl
;
679 iscsi_conn_printk(KERN_ALERT
, conn
,
680 "bnx2i: conn update - MBL 0x%x FBL 0x%x"
681 "MRDSL_I 0x%x MRDSL_T 0x%x \n",
682 update_wqe
->max_burst_length
,
683 update_wqe
->first_burst_length
,
684 update_wqe
->max_recv_pdu_length
,
685 update_wqe
->max_send_pdu_length
);
687 kwqe_arr
[0] = (struct kwqe
*) update_wqe
;
688 if (hba
->cnic
&& hba
->cnic
->submit_kwqes
)
689 hba
->cnic
->submit_kwqes(hba
->cnic
, kwqe_arr
, 1);
694 * bnx2i_ep_ofld_timer - post iSCSI logout request WQE to hardware
695 * @data: endpoint (transport handle) structure pointer
697 * routine to handle connection offload/destroy request timeout
699 void bnx2i_ep_ofld_timer(unsigned long data
)
701 struct bnx2i_endpoint
*ep
= (struct bnx2i_endpoint
*) data
;
703 if (ep
->state
== EP_STATE_OFLD_START
) {
704 printk(KERN_ALERT
"ofld_timer: CONN_OFLD timeout\n");
705 ep
->state
= EP_STATE_OFLD_FAILED
;
706 } else if (ep
->state
== EP_STATE_DISCONN_START
) {
707 printk(KERN_ALERT
"ofld_timer: CONN_DISCON timeout\n");
708 ep
->state
= EP_STATE_DISCONN_TIMEDOUT
;
709 } else if (ep
->state
== EP_STATE_CLEANUP_START
) {
710 printk(KERN_ALERT
"ofld_timer: CONN_CLEANUP timeout\n");
711 ep
->state
= EP_STATE_CLEANUP_FAILED
;
714 wake_up_interruptible(&ep
->ofld_wait
);
718 static int bnx2i_power_of2(u32 val
)
733 * bnx2i_send_cmd_cleanup_req - send iscsi cmd context clean-up request
734 * @hba: adapter structure pointer
735 * @cmd: driver command structure which is requesting
736 * a WQE to sent to chip for further processing
738 * prepares and posts CONN_OFLD_REQ1/2 KWQE
740 void bnx2i_send_cmd_cleanup_req(struct bnx2i_hba
*hba
, struct bnx2i_cmd
*cmd
)
742 struct bnx2i_cleanup_request
*cmd_cleanup
;
745 (struct bnx2i_cleanup_request
*)cmd
->conn
->ep
->qp
.sq_prod_qe
;
746 memset(cmd_cleanup
, 0x00, sizeof(struct bnx2i_cleanup_request
));
748 cmd_cleanup
->op_code
= ISCSI_OPCODE_CLEANUP_REQUEST
;
749 cmd_cleanup
->itt
= cmd
->req
.itt
;
750 cmd_cleanup
->cq_index
= 0; /* CQ# used for completion, 5771x only */
752 bnx2i_ring_dbell_update_sq_params(cmd
->conn
, 1);
757 * bnx2i_send_conn_destroy - initiates iscsi connection teardown process
758 * @hba: adapter structure pointer
759 * @ep: endpoint (transport indentifier) structure
761 * this routine prepares and posts CONN_OFLD_REQ1/2 KWQE to initiate
762 * iscsi connection context clean-up process
764 int bnx2i_send_conn_destroy(struct bnx2i_hba
*hba
, struct bnx2i_endpoint
*ep
)
766 struct kwqe
*kwqe_arr
[2];
767 struct iscsi_kwqe_conn_destroy conn_cleanup
;
770 memset(&conn_cleanup
, 0x00, sizeof(struct iscsi_kwqe_conn_destroy
));
772 conn_cleanup
.hdr
.op_code
= ISCSI_KWQE_OPCODE_DESTROY_CONN
;
773 conn_cleanup
.hdr
.flags
=
774 (ISCSI_KWQE_LAYER_CODE
<< ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT
);
775 /* 5771x requires conn context id to be passed as is */
776 if (test_bit(BNX2I_NX2_DEV_57710
, &ep
->hba
->cnic_dev_type
))
777 conn_cleanup
.context_id
= ep
->ep_cid
;
779 conn_cleanup
.context_id
= (ep
->ep_cid
>> 7);
781 conn_cleanup
.reserved0
= (u16
)ep
->ep_iscsi_cid
;
783 kwqe_arr
[0] = (struct kwqe
*) &conn_cleanup
;
784 if (hba
->cnic
&& hba
->cnic
->submit_kwqes
)
785 rc
= hba
->cnic
->submit_kwqes(hba
->cnic
, kwqe_arr
, 1);
792 * bnx2i_570x_send_conn_ofld_req - initiates iscsi conn context setup process
793 * @hba: adapter structure pointer
794 * @ep: endpoint (transport indentifier) structure
796 * 5706/5708/5709 specific - prepares and posts CONN_OFLD_REQ1/2 KWQE
798 static int bnx2i_570x_send_conn_ofld_req(struct bnx2i_hba
*hba
,
799 struct bnx2i_endpoint
*ep
)
801 struct kwqe
*kwqe_arr
[2];
802 struct iscsi_kwqe_conn_offload1 ofld_req1
;
803 struct iscsi_kwqe_conn_offload2 ofld_req2
;
809 ofld_req1
.hdr
.op_code
= ISCSI_KWQE_OPCODE_OFFLOAD_CONN1
;
810 ofld_req1
.hdr
.flags
=
811 (ISCSI_KWQE_LAYER_CODE
<< ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT
);
813 ofld_req1
.iscsi_conn_id
= (u16
) ep
->ep_iscsi_cid
;
815 dma_addr
= ep
->qp
.sq_pgtbl_phys
;
816 ofld_req1
.sq_page_table_addr_lo
= (u32
) dma_addr
;
817 ofld_req1
.sq_page_table_addr_hi
= (u32
) ((u64
) dma_addr
>> 32);
819 dma_addr
= ep
->qp
.cq_pgtbl_phys
;
820 ofld_req1
.cq_page_table_addr_lo
= (u32
) dma_addr
;
821 ofld_req1
.cq_page_table_addr_hi
= (u32
) ((u64
) dma_addr
>> 32);
823 ofld_req2
.hdr
.op_code
= ISCSI_KWQE_OPCODE_OFFLOAD_CONN2
;
824 ofld_req2
.hdr
.flags
=
825 (ISCSI_KWQE_LAYER_CODE
<< ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT
);
827 dma_addr
= ep
->qp
.rq_pgtbl_phys
;
828 ofld_req2
.rq_page_table_addr_lo
= (u32
) dma_addr
;
829 ofld_req2
.rq_page_table_addr_hi
= (u32
) ((u64
) dma_addr
>> 32);
831 ptbl
= (u32
*) ep
->qp
.sq_pgtbl_virt
;
833 ofld_req2
.sq_first_pte
.hi
= *ptbl
++;
834 ofld_req2
.sq_first_pte
.lo
= *ptbl
;
836 ptbl
= (u32
*) ep
->qp
.cq_pgtbl_virt
;
837 ofld_req2
.cq_first_pte
.hi
= *ptbl
++;
838 ofld_req2
.cq_first_pte
.lo
= *ptbl
;
840 kwqe_arr
[0] = (struct kwqe
*) &ofld_req1
;
841 kwqe_arr
[1] = (struct kwqe
*) &ofld_req2
;
842 ofld_req2
.num_additional_wqes
= 0;
844 if (hba
->cnic
&& hba
->cnic
->submit_kwqes
)
845 rc
= hba
->cnic
->submit_kwqes(hba
->cnic
, kwqe_arr
, num_kwqes
);
852 * bnx2i_5771x_send_conn_ofld_req - initiates iscsi connection context creation
853 * @hba: adapter structure pointer
854 * @ep: endpoint (transport indentifier) structure
856 * 57710 specific - prepares and posts CONN_OFLD_REQ1/2 KWQE
858 static int bnx2i_5771x_send_conn_ofld_req(struct bnx2i_hba
*hba
,
859 struct bnx2i_endpoint
*ep
)
861 struct kwqe
*kwqe_arr
[5];
862 struct iscsi_kwqe_conn_offload1 ofld_req1
;
863 struct iscsi_kwqe_conn_offload2 ofld_req2
;
864 struct iscsi_kwqe_conn_offload3 ofld_req3
[1];
870 ofld_req1
.hdr
.op_code
= ISCSI_KWQE_OPCODE_OFFLOAD_CONN1
;
871 ofld_req1
.hdr
.flags
=
872 (ISCSI_KWQE_LAYER_CODE
<< ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT
);
874 ofld_req1
.iscsi_conn_id
= (u16
) ep
->ep_iscsi_cid
;
876 dma_addr
= ep
->qp
.sq_pgtbl_phys
+ ISCSI_SQ_DB_SIZE
;
877 ofld_req1
.sq_page_table_addr_lo
= (u32
) dma_addr
;
878 ofld_req1
.sq_page_table_addr_hi
= (u32
) ((u64
) dma_addr
>> 32);
880 dma_addr
= ep
->qp
.cq_pgtbl_phys
+ ISCSI_CQ_DB_SIZE
;
881 ofld_req1
.cq_page_table_addr_lo
= (u32
) dma_addr
;
882 ofld_req1
.cq_page_table_addr_hi
= (u32
) ((u64
) dma_addr
>> 32);
884 ofld_req2
.hdr
.op_code
= ISCSI_KWQE_OPCODE_OFFLOAD_CONN2
;
885 ofld_req2
.hdr
.flags
=
886 (ISCSI_KWQE_LAYER_CODE
<< ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT
);
888 dma_addr
= ep
->qp
.rq_pgtbl_phys
+ ISCSI_RQ_DB_SIZE
;
889 ofld_req2
.rq_page_table_addr_lo
= (u32
) dma_addr
;
890 ofld_req2
.rq_page_table_addr_hi
= (u32
) ((u64
) dma_addr
>> 32);
892 ptbl
= (u32
*)((u8
*)ep
->qp
.sq_pgtbl_virt
+ ISCSI_SQ_DB_SIZE
);
893 ofld_req2
.sq_first_pte
.hi
= *ptbl
++;
894 ofld_req2
.sq_first_pte
.lo
= *ptbl
;
896 ptbl
= (u32
*)((u8
*)ep
->qp
.cq_pgtbl_virt
+ ISCSI_CQ_DB_SIZE
);
897 ofld_req2
.cq_first_pte
.hi
= *ptbl
++;
898 ofld_req2
.cq_first_pte
.lo
= *ptbl
;
900 kwqe_arr
[0] = (struct kwqe
*) &ofld_req1
;
901 kwqe_arr
[1] = (struct kwqe
*) &ofld_req2
;
903 ofld_req2
.num_additional_wqes
= 1;
904 memset(ofld_req3
, 0x00, sizeof(ofld_req3
[0]));
905 ptbl
= (u32
*)((u8
*)ep
->qp
.rq_pgtbl_virt
+ ISCSI_RQ_DB_SIZE
);
906 ofld_req3
[0].qp_first_pte
[0].hi
= *ptbl
++;
907 ofld_req3
[0].qp_first_pte
[0].lo
= *ptbl
;
909 kwqe_arr
[2] = (struct kwqe
*) ofld_req3
;
910 /* need if we decide to go with multiple KCQE's per conn */
913 if (hba
->cnic
&& hba
->cnic
->submit_kwqes
)
914 rc
= hba
->cnic
->submit_kwqes(hba
->cnic
, kwqe_arr
, num_kwqes
);
920 * bnx2i_send_conn_ofld_req - initiates iscsi connection context setup process
922 * @hba: adapter structure pointer
923 * @ep: endpoint (transport indentifier) structure
925 * this routine prepares and posts CONN_OFLD_REQ1/2 KWQE
927 int bnx2i_send_conn_ofld_req(struct bnx2i_hba
*hba
, struct bnx2i_endpoint
*ep
)
931 if (test_bit(BNX2I_NX2_DEV_57710
, &hba
->cnic_dev_type
))
932 rc
= bnx2i_5771x_send_conn_ofld_req(hba
, ep
);
934 rc
= bnx2i_570x_send_conn_ofld_req(hba
, ep
);
941 * setup_qp_page_tables - iscsi QP page table setup function
942 * @ep: endpoint (transport indentifier) structure
944 * Sets up page tables for SQ/RQ/CQ, 1G/sec (5706/5708/5709) devices requires
945 * 64-bit address in big endian format. Whereas 10G/sec (57710) requires
946 * PT in little endian format
948 static void setup_qp_page_tables(struct bnx2i_endpoint
*ep
)
955 if (test_bit(BNX2I_NX2_DEV_57710
, &ep
->hba
->cnic_dev_type
))
961 memset(ep
->qp
.sq_pgtbl_virt
, 0, ep
->qp
.sq_pgtbl_size
);
962 num_pages
= ep
->qp
.sq_mem_size
/ PAGE_SIZE
;
963 page
= ep
->qp
.sq_phys
;
966 ptbl
= (u32
*)((u8
*)ep
->qp
.sq_pgtbl_virt
+ ISCSI_SQ_DB_SIZE
);
968 ptbl
= (u32
*) ep
->qp
.sq_pgtbl_virt
;
969 while (num_pages
--) {
971 /* PTE is written in little endian format for 57710 */
974 *ptbl
= (u32
) ((u64
) page
>> 32);
978 /* PTE is written in big endian format for
979 * 5706/5708/5709 devices */
980 *ptbl
= (u32
) ((u64
) page
>> 32);
989 memset(ep
->qp
.rq_pgtbl_virt
, 0, ep
->qp
.rq_pgtbl_size
);
990 num_pages
= ep
->qp
.rq_mem_size
/ PAGE_SIZE
;
991 page
= ep
->qp
.rq_phys
;
994 ptbl
= (u32
*)((u8
*)ep
->qp
.rq_pgtbl_virt
+ ISCSI_RQ_DB_SIZE
);
996 ptbl
= (u32
*) ep
->qp
.rq_pgtbl_virt
;
997 while (num_pages
--) {
999 /* PTE is written in little endian format for 57710 */
1002 *ptbl
= (u32
) ((u64
) page
>> 32);
1006 /* PTE is written in big endian format for
1007 * 5706/5708/5709 devices */
1008 *ptbl
= (u32
) ((u64
) page
>> 32);
1017 memset(ep
->qp
.cq_pgtbl_virt
, 0, ep
->qp
.cq_pgtbl_size
);
1018 num_pages
= ep
->qp
.cq_mem_size
/ PAGE_SIZE
;
1019 page
= ep
->qp
.cq_phys
;
1022 ptbl
= (u32
*)((u8
*)ep
->qp
.cq_pgtbl_virt
+ ISCSI_CQ_DB_SIZE
);
1024 ptbl
= (u32
*) ep
->qp
.cq_pgtbl_virt
;
1025 while (num_pages
--) {
1027 /* PTE is written in little endian format for 57710 */
1030 *ptbl
= (u32
) ((u64
) page
>> 32);
1034 /* PTE is written in big endian format for
1035 * 5706/5708/5709 devices */
1036 *ptbl
= (u32
) ((u64
) page
>> 32);
1047 * bnx2i_alloc_qp_resc - allocates required resources for QP.
1048 * @hba: adapter structure pointer
1049 * @ep: endpoint (transport indentifier) structure
1051 * Allocate QP (transport layer for iSCSI connection) resources, DMA'able
1052 * memory for SQ/RQ/CQ and page tables. EP structure elements such
1053 * as producer/consumer indexes/pointers, queue sizes and page table
1054 * contents are setup
1056 int bnx2i_alloc_qp_resc(struct bnx2i_hba
*hba
, struct bnx2i_endpoint
*ep
)
1058 struct bnx2i_5771x_cq_db
*cq_db
;
1062 ep
->ep_cid
= ep
->ep_iscsi_cid
= ep
->ep_pg_cid
= 0;
1064 /* Allocate page table memory for SQ which is page aligned */
1065 ep
->qp
.sq_mem_size
= hba
->max_sqes
* BNX2I_SQ_WQE_SIZE
;
1066 ep
->qp
.sq_mem_size
=
1067 (ep
->qp
.sq_mem_size
+ (PAGE_SIZE
- 1)) & PAGE_MASK
;
1068 ep
->qp
.sq_pgtbl_size
=
1069 (ep
->qp
.sq_mem_size
/ PAGE_SIZE
) * sizeof(void *);
1070 ep
->qp
.sq_pgtbl_size
=
1071 (ep
->qp
.sq_pgtbl_size
+ (PAGE_SIZE
- 1)) & PAGE_MASK
;
1073 ep
->qp
.sq_pgtbl_virt
=
1074 dma_alloc_coherent(&hba
->pcidev
->dev
, ep
->qp
.sq_pgtbl_size
,
1075 &ep
->qp
.sq_pgtbl_phys
, GFP_KERNEL
);
1076 if (!ep
->qp
.sq_pgtbl_virt
) {
1077 printk(KERN_ALERT
"bnx2i: unable to alloc SQ PT mem (%d)\n",
1078 ep
->qp
.sq_pgtbl_size
);
1082 /* Allocate memory area for actual SQ element */
1084 dma_alloc_coherent(&hba
->pcidev
->dev
, ep
->qp
.sq_mem_size
,
1085 &ep
->qp
.sq_phys
, GFP_KERNEL
);
1086 if (!ep
->qp
.sq_virt
) {
1087 printk(KERN_ALERT
"bnx2i: unable to alloc SQ BD memory %d\n",
1088 ep
->qp
.sq_mem_size
);
1092 memset(ep
->qp
.sq_virt
, 0x00, ep
->qp
.sq_mem_size
);
1093 ep
->qp
.sq_first_qe
= ep
->qp
.sq_virt
;
1094 ep
->qp
.sq_prod_qe
= ep
->qp
.sq_first_qe
;
1095 ep
->qp
.sq_cons_qe
= ep
->qp
.sq_first_qe
;
1096 ep
->qp
.sq_last_qe
= &ep
->qp
.sq_first_qe
[hba
->max_sqes
- 1];
1097 ep
->qp
.sq_prod_idx
= 0;
1098 ep
->qp
.sq_cons_idx
= 0;
1099 ep
->qp
.sqe_left
= hba
->max_sqes
;
1101 /* Allocate page table memory for CQ which is page aligned */
1102 ep
->qp
.cq_mem_size
= hba
->max_cqes
* BNX2I_CQE_SIZE
;
1103 ep
->qp
.cq_mem_size
=
1104 (ep
->qp
.cq_mem_size
+ (PAGE_SIZE
- 1)) & PAGE_MASK
;
1105 ep
->qp
.cq_pgtbl_size
=
1106 (ep
->qp
.cq_mem_size
/ PAGE_SIZE
) * sizeof(void *);
1107 ep
->qp
.cq_pgtbl_size
=
1108 (ep
->qp
.cq_pgtbl_size
+ (PAGE_SIZE
- 1)) & PAGE_MASK
;
1110 ep
->qp
.cq_pgtbl_virt
=
1111 dma_alloc_coherent(&hba
->pcidev
->dev
, ep
->qp
.cq_pgtbl_size
,
1112 &ep
->qp
.cq_pgtbl_phys
, GFP_KERNEL
);
1113 if (!ep
->qp
.cq_pgtbl_virt
) {
1114 printk(KERN_ALERT
"bnx2i: unable to alloc CQ PT memory %d\n",
1115 ep
->qp
.cq_pgtbl_size
);
1119 /* Allocate memory area for actual CQ element */
1121 dma_alloc_coherent(&hba
->pcidev
->dev
, ep
->qp
.cq_mem_size
,
1122 &ep
->qp
.cq_phys
, GFP_KERNEL
);
1123 if (!ep
->qp
.cq_virt
) {
1124 printk(KERN_ALERT
"bnx2i: unable to alloc CQ BD memory %d\n",
1125 ep
->qp
.cq_mem_size
);
1128 memset(ep
->qp
.cq_virt
, 0x00, ep
->qp
.cq_mem_size
);
1130 ep
->qp
.cq_first_qe
= ep
->qp
.cq_virt
;
1131 ep
->qp
.cq_prod_qe
= ep
->qp
.cq_first_qe
;
1132 ep
->qp
.cq_cons_qe
= ep
->qp
.cq_first_qe
;
1133 ep
->qp
.cq_last_qe
= &ep
->qp
.cq_first_qe
[hba
->max_cqes
- 1];
1134 ep
->qp
.cq_prod_idx
= 0;
1135 ep
->qp
.cq_cons_idx
= 0;
1136 ep
->qp
.cqe_left
= hba
->max_cqes
;
1137 ep
->qp
.cqe_exp_seq_sn
= ISCSI_INITIAL_SN
;
1138 ep
->qp
.cqe_size
= hba
->max_cqes
;
1140 /* Invalidate all EQ CQE index, req only for 57710 */
1141 cq_db
= (struct bnx2i_5771x_cq_db
*) ep
->qp
.cq_pgtbl_virt
;
1142 memset(cq_db
->sqn
, 0xFF, sizeof(cq_db
->sqn
[0]) * BNX2X_MAX_CQS
);
1144 /* Allocate page table memory for RQ which is page aligned */
1145 ep
->qp
.rq_mem_size
= hba
->max_rqes
* BNX2I_RQ_WQE_SIZE
;
1146 ep
->qp
.rq_mem_size
=
1147 (ep
->qp
.rq_mem_size
+ (PAGE_SIZE
- 1)) & PAGE_MASK
;
1148 ep
->qp
.rq_pgtbl_size
=
1149 (ep
->qp
.rq_mem_size
/ PAGE_SIZE
) * sizeof(void *);
1150 ep
->qp
.rq_pgtbl_size
=
1151 (ep
->qp
.rq_pgtbl_size
+ (PAGE_SIZE
- 1)) & PAGE_MASK
;
1153 ep
->qp
.rq_pgtbl_virt
=
1154 dma_alloc_coherent(&hba
->pcidev
->dev
, ep
->qp
.rq_pgtbl_size
,
1155 &ep
->qp
.rq_pgtbl_phys
, GFP_KERNEL
);
1156 if (!ep
->qp
.rq_pgtbl_virt
) {
1157 printk(KERN_ALERT
"bnx2i: unable to alloc RQ PT mem %d\n",
1158 ep
->qp
.rq_pgtbl_size
);
1162 /* Allocate memory area for actual RQ element */
1164 dma_alloc_coherent(&hba
->pcidev
->dev
, ep
->qp
.rq_mem_size
,
1165 &ep
->qp
.rq_phys
, GFP_KERNEL
);
1166 if (!ep
->qp
.rq_virt
) {
1167 printk(KERN_ALERT
"bnx2i: unable to alloc RQ BD memory %d\n",
1168 ep
->qp
.rq_mem_size
);
1172 ep
->qp
.rq_first_qe
= ep
->qp
.rq_virt
;
1173 ep
->qp
.rq_prod_qe
= ep
->qp
.rq_first_qe
;
1174 ep
->qp
.rq_cons_qe
= ep
->qp
.rq_first_qe
;
1175 ep
->qp
.rq_last_qe
= &ep
->qp
.rq_first_qe
[hba
->max_rqes
- 1];
1176 ep
->qp
.rq_prod_idx
= 0x8000;
1177 ep
->qp
.rq_cons_idx
= 0;
1178 ep
->qp
.rqe_left
= hba
->max_rqes
;
1180 setup_qp_page_tables(ep
);
1185 bnx2i_free_qp_resc(hba
, ep
);
1192 * bnx2i_free_qp_resc - free memory resources held by QP
1193 * @hba: adapter structure pointer
1194 * @ep: endpoint (transport indentifier) structure
1196 * Free QP resources - SQ/RQ/CQ memory and page tables.
1198 void bnx2i_free_qp_resc(struct bnx2i_hba
*hba
, struct bnx2i_endpoint
*ep
)
1200 if (ep
->qp
.ctx_base
) {
1201 iounmap(ep
->qp
.ctx_base
);
1202 ep
->qp
.ctx_base
= NULL
;
1205 if (ep
->qp
.sq_pgtbl_virt
) {
1206 dma_free_coherent(&hba
->pcidev
->dev
, ep
->qp
.sq_pgtbl_size
,
1207 ep
->qp
.sq_pgtbl_virt
, ep
->qp
.sq_pgtbl_phys
);
1208 ep
->qp
.sq_pgtbl_virt
= NULL
;
1209 ep
->qp
.sq_pgtbl_phys
= 0;
1211 if (ep
->qp
.sq_virt
) {
1212 dma_free_coherent(&hba
->pcidev
->dev
, ep
->qp
.sq_mem_size
,
1213 ep
->qp
.sq_virt
, ep
->qp
.sq_phys
);
1214 ep
->qp
.sq_virt
= NULL
;
1219 if (ep
->qp
.rq_pgtbl_virt
) {
1220 dma_free_coherent(&hba
->pcidev
->dev
, ep
->qp
.rq_pgtbl_size
,
1221 ep
->qp
.rq_pgtbl_virt
, ep
->qp
.rq_pgtbl_phys
);
1222 ep
->qp
.rq_pgtbl_virt
= NULL
;
1223 ep
->qp
.rq_pgtbl_phys
= 0;
1225 if (ep
->qp
.rq_virt
) {
1226 dma_free_coherent(&hba
->pcidev
->dev
, ep
->qp
.rq_mem_size
,
1227 ep
->qp
.rq_virt
, ep
->qp
.rq_phys
);
1228 ep
->qp
.rq_virt
= NULL
;
1233 if (ep
->qp
.cq_pgtbl_virt
) {
1234 dma_free_coherent(&hba
->pcidev
->dev
, ep
->qp
.cq_pgtbl_size
,
1235 ep
->qp
.cq_pgtbl_virt
, ep
->qp
.cq_pgtbl_phys
);
1236 ep
->qp
.cq_pgtbl_virt
= NULL
;
1237 ep
->qp
.cq_pgtbl_phys
= 0;
1239 if (ep
->qp
.cq_virt
) {
1240 dma_free_coherent(&hba
->pcidev
->dev
, ep
->qp
.cq_mem_size
,
1241 ep
->qp
.cq_virt
, ep
->qp
.cq_phys
);
1242 ep
->qp
.cq_virt
= NULL
;
1249 * bnx2i_send_fw_iscsi_init_msg - initiates initial handshake with iscsi f/w
1250 * @hba: adapter structure pointer
1252 * Send down iscsi_init KWQEs which initiates the initial handshake with the f/w
1253 * This results in iSCSi support validation and on-chip context manager
1254 * initialization. Firmware completes this handshake with a CQE carrying
1255 * the result of iscsi support validation. Parameter carried by
1256 * iscsi init request determines the number of offloaded connection and
1257 * tolerance level for iscsi protocol violation this hba/chip can support
1259 int bnx2i_send_fw_iscsi_init_msg(struct bnx2i_hba
*hba
)
1261 struct kwqe
*kwqe_arr
[3];
1262 struct iscsi_kwqe_init1 iscsi_init
;
1263 struct iscsi_kwqe_init2 iscsi_init2
;
1267 bnx2i_adjust_qp_size(hba
);
1270 ISCSI_PAGE_SIZE_4K
<< ISCSI_KWQE_INIT1_PAGE_SIZE_SHIFT
;
1272 iscsi_init
.flags
|= ISCSI_KWQE_INIT1_DELAYED_ACK_ENABLE
;
1273 iscsi_init
.reserved0
= 0;
1274 iscsi_init
.num_cqs
= 1;
1275 iscsi_init
.hdr
.op_code
= ISCSI_KWQE_OPCODE_INIT1
;
1276 iscsi_init
.hdr
.flags
=
1277 (ISCSI_KWQE_LAYER_CODE
<< ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT
);
1279 iscsi_init
.dummy_buffer_addr_lo
= (u32
) hba
->dummy_buf_dma
;
1280 iscsi_init
.dummy_buffer_addr_hi
=
1281 (u32
) ((u64
) hba
->dummy_buf_dma
>> 32);
1283 hba
->num_ccell
= hba
->max_sqes
>> 1;
1284 hba
->ctx_ccell_tasks
=
1285 ((hba
->num_ccell
& 0xFFFF) | (hba
->max_sqes
<< 16));
1286 iscsi_init
.num_ccells_per_conn
= hba
->num_ccell
;
1287 iscsi_init
.num_tasks_per_conn
= hba
->max_sqes
;
1288 iscsi_init
.sq_wqes_per_page
= PAGE_SIZE
/ BNX2I_SQ_WQE_SIZE
;
1289 iscsi_init
.sq_num_wqes
= hba
->max_sqes
;
1290 iscsi_init
.cq_log_wqes_per_page
=
1291 (u8
) bnx2i_power_of2(PAGE_SIZE
/ BNX2I_CQE_SIZE
);
1292 iscsi_init
.cq_num_wqes
= hba
->max_cqes
;
1293 iscsi_init
.cq_num_pages
= (hba
->max_cqes
* BNX2I_CQE_SIZE
+
1294 (PAGE_SIZE
- 1)) / PAGE_SIZE
;
1295 iscsi_init
.sq_num_pages
= (hba
->max_sqes
* BNX2I_SQ_WQE_SIZE
+
1296 (PAGE_SIZE
- 1)) / PAGE_SIZE
;
1297 iscsi_init
.rq_buffer_size
= BNX2I_RQ_WQE_SIZE
;
1298 iscsi_init
.rq_num_wqes
= hba
->max_rqes
;
1301 iscsi_init2
.hdr
.op_code
= ISCSI_KWQE_OPCODE_INIT2
;
1302 iscsi_init2
.hdr
.flags
=
1303 (ISCSI_KWQE_LAYER_CODE
<< ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT
);
1304 iscsi_init2
.max_cq_sqn
= hba
->max_cqes
* 2 + 1;
1309 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_NOT_RSRV
) |
1312 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_EXP_DATASN
) |
1314 (1ULL << ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_LUN
));
1316 iscsi_init2
.error_bit_map
[0] = error_mask1
;
1318 iscsi_init2
.error_bit_map
[0] = (u32
) mask64
;
1321 iscsi_init2
.error_bit_map
[1] = error_mask2
;
1323 iscsi_init2
.error_bit_map
[1] = (u32
) (mask64
>> 32);
1325 iscsi_error_mask
= mask64
;
1327 kwqe_arr
[0] = (struct kwqe
*) &iscsi_init
;
1328 kwqe_arr
[1] = (struct kwqe
*) &iscsi_init2
;
1330 if (hba
->cnic
&& hba
->cnic
->submit_kwqes
)
1331 rc
= hba
->cnic
->submit_kwqes(hba
->cnic
, kwqe_arr
, 2);
1337 * bnx2i_process_scsi_cmd_resp - this function handles scsi cmd completion.
1338 * @session: iscsi session
1339 * @bnx2i_conn: bnx2i connection
1340 * @cqe: pointer to newly DMA'ed CQE entry for processing
1342 * process SCSI CMD Response CQE & complete the request to SCSI-ML
1344 int bnx2i_process_scsi_cmd_resp(struct iscsi_session
*session
,
1345 struct bnx2i_conn
*bnx2i_conn
,
1348 struct iscsi_conn
*conn
= bnx2i_conn
->cls_conn
->dd_data
;
1349 struct bnx2i_cmd_response
*resp_cqe
;
1350 struct bnx2i_cmd
*bnx2i_cmd
;
1351 struct iscsi_task
*task
;
1352 struct iscsi_scsi_rsp
*hdr
;
1355 resp_cqe
= (struct bnx2i_cmd_response
*)cqe
;
1356 spin_lock_bh(&session
->lock
);
1357 task
= iscsi_itt_to_task(conn
,
1358 resp_cqe
->itt
& ISCSI_CMD_RESPONSE_INDEX
);
1362 bnx2i_cmd
= task
->dd_data
;
1364 if (bnx2i_cmd
->req
.op_attr
& ISCSI_CMD_REQUEST_READ
) {
1365 conn
->datain_pdus_cnt
+=
1366 resp_cqe
->task_stat
.read_stat
.num_data_outs
;
1367 conn
->rxdata_octets
+=
1368 bnx2i_cmd
->req
.total_data_transfer_length
;
1370 conn
->dataout_pdus_cnt
+=
1371 resp_cqe
->task_stat
.read_stat
.num_data_outs
;
1372 conn
->r2t_pdus_cnt
+=
1373 resp_cqe
->task_stat
.read_stat
.num_r2ts
;
1374 conn
->txdata_octets
+=
1375 bnx2i_cmd
->req
.total_data_transfer_length
;
1377 bnx2i_iscsi_unmap_sg_list(bnx2i_cmd
);
1379 hdr
= (struct iscsi_scsi_rsp
*)task
->hdr
;
1380 resp_cqe
= (struct bnx2i_cmd_response
*)cqe
;
1381 hdr
->opcode
= resp_cqe
->op_code
;
1382 hdr
->max_cmdsn
= cpu_to_be32(resp_cqe
->max_cmd_sn
);
1383 hdr
->exp_cmdsn
= cpu_to_be32(resp_cqe
->exp_cmd_sn
);
1384 hdr
->response
= resp_cqe
->response
;
1385 hdr
->cmd_status
= resp_cqe
->status
;
1386 hdr
->flags
= resp_cqe
->response_flags
;
1387 hdr
->residual_count
= cpu_to_be32(resp_cqe
->residual_count
);
1389 if (resp_cqe
->op_code
== ISCSI_OP_SCSI_DATA_IN
)
1392 if (resp_cqe
->status
== SAM_STAT_CHECK_CONDITION
) {
1393 datalen
= resp_cqe
->data_length
;
1397 if (datalen
> BNX2I_RQ_WQE_SIZE
) {
1398 iscsi_conn_printk(KERN_ERR
, conn
,
1399 "sense data len %d > RQ sz\n",
1401 datalen
= BNX2I_RQ_WQE_SIZE
;
1402 } else if (datalen
> ISCSI_DEF_MAX_RECV_SEG_LEN
) {
1403 iscsi_conn_printk(KERN_ERR
, conn
,
1404 "sense data len %d > conn data\n",
1406 datalen
= ISCSI_DEF_MAX_RECV_SEG_LEN
;
1409 bnx2i_get_rq_buf(bnx2i_cmd
->conn
, conn
->data
, datalen
);
1410 bnx2i_put_rq_buf(bnx2i_cmd
->conn
, 1);
1414 __iscsi_complete_pdu(conn
, (struct iscsi_hdr
*)hdr
,
1415 conn
->data
, datalen
);
1417 spin_unlock_bh(&session
->lock
);
1423 * bnx2i_process_login_resp - this function handles iscsi login response
1424 * @session: iscsi session pointer
1425 * @bnx2i_conn: iscsi connection pointer
1426 * @cqe: pointer to newly DMA'ed CQE entry for processing
1428 * process Login Response CQE & complete it to open-iscsi user daemon
1430 static int bnx2i_process_login_resp(struct iscsi_session
*session
,
1431 struct bnx2i_conn
*bnx2i_conn
,
1434 struct iscsi_conn
*conn
= bnx2i_conn
->cls_conn
->dd_data
;
1435 struct iscsi_task
*task
;
1436 struct bnx2i_login_response
*login
;
1437 struct iscsi_login_rsp
*resp_hdr
;
1441 login
= (struct bnx2i_login_response
*) cqe
;
1442 spin_lock(&session
->lock
);
1443 task
= iscsi_itt_to_task(conn
,
1444 login
->itt
& ISCSI_LOGIN_RESPONSE_INDEX
);
1448 resp_hdr
= (struct iscsi_login_rsp
*) &bnx2i_conn
->gen_pdu
.resp_hdr
;
1449 memset(resp_hdr
, 0, sizeof(struct iscsi_hdr
));
1450 resp_hdr
->opcode
= login
->op_code
;
1451 resp_hdr
->flags
= login
->response_flags
;
1452 resp_hdr
->max_version
= login
->version_max
;
1453 resp_hdr
->active_version
= login
->version_active
;
1454 resp_hdr
->hlength
= 0;
1456 hton24(resp_hdr
->dlength
, login
->data_length
);
1457 memcpy(resp_hdr
->isid
, &login
->isid_lo
, 6);
1458 resp_hdr
->tsih
= cpu_to_be16(login
->tsih
);
1459 resp_hdr
->itt
= task
->hdr
->itt
;
1460 resp_hdr
->statsn
= cpu_to_be32(login
->stat_sn
);
1461 resp_hdr
->exp_cmdsn
= cpu_to_be32(login
->exp_cmd_sn
);
1462 resp_hdr
->max_cmdsn
= cpu_to_be32(login
->max_cmd_sn
);
1463 resp_hdr
->status_class
= login
->status_class
;
1464 resp_hdr
->status_detail
= login
->status_detail
;
1465 pld_len
= login
->data_length
;
1466 bnx2i_conn
->gen_pdu
.resp_wr_ptr
=
1467 bnx2i_conn
->gen_pdu
.resp_buf
+ pld_len
;
1471 pad_len
= 4 - (pld_len
% 4);
1475 for (i
= 0; i
< pad_len
; i
++) {
1476 bnx2i_conn
->gen_pdu
.resp_wr_ptr
[0] = 0;
1477 bnx2i_conn
->gen_pdu
.resp_wr_ptr
++;
1481 __iscsi_complete_pdu(conn
, (struct iscsi_hdr
*)resp_hdr
,
1482 bnx2i_conn
->gen_pdu
.resp_buf
,
1483 bnx2i_conn
->gen_pdu
.resp_wr_ptr
- bnx2i_conn
->gen_pdu
.resp_buf
);
1485 spin_unlock(&session
->lock
);
1491 * bnx2i_process_text_resp - this function handles iscsi text response
1492 * @session: iscsi session pointer
1493 * @bnx2i_conn: iscsi connection pointer
1494 * @cqe: pointer to newly DMA'ed CQE entry for processing
1496 * process iSCSI Text Response CQE& complete it to open-iscsi user daemon
1498 static int bnx2i_process_text_resp(struct iscsi_session
*session
,
1499 struct bnx2i_conn
*bnx2i_conn
,
1502 struct iscsi_conn
*conn
= bnx2i_conn
->cls_conn
->dd_data
;
1503 struct iscsi_task
*task
;
1504 struct bnx2i_text_response
*text
;
1505 struct iscsi_text_rsp
*resp_hdr
;
1509 text
= (struct bnx2i_text_response
*) cqe
;
1510 spin_lock(&session
->lock
);
1511 task
= iscsi_itt_to_task(conn
, text
->itt
& ISCSI_LOGIN_RESPONSE_INDEX
);
1515 resp_hdr
= (struct iscsi_text_rsp
*)&bnx2i_conn
->gen_pdu
.resp_hdr
;
1516 memset(resp_hdr
, 0, sizeof(struct iscsi_hdr
));
1517 resp_hdr
->opcode
= text
->op_code
;
1518 resp_hdr
->flags
= text
->response_flags
;
1519 resp_hdr
->hlength
= 0;
1521 hton24(resp_hdr
->dlength
, text
->data_length
);
1522 resp_hdr
->itt
= task
->hdr
->itt
;
1523 resp_hdr
->ttt
= cpu_to_be32(text
->ttt
);
1524 resp_hdr
->statsn
= task
->hdr
->exp_statsn
;
1525 resp_hdr
->exp_cmdsn
= cpu_to_be32(text
->exp_cmd_sn
);
1526 resp_hdr
->max_cmdsn
= cpu_to_be32(text
->max_cmd_sn
);
1527 pld_len
= text
->data_length
;
1528 bnx2i_conn
->gen_pdu
.resp_wr_ptr
= bnx2i_conn
->gen_pdu
.resp_buf
+
1532 pad_len
= 4 - (pld_len
% 4);
1536 for (i
= 0; i
< pad_len
; i
++) {
1537 bnx2i_conn
->gen_pdu
.resp_wr_ptr
[0] = 0;
1538 bnx2i_conn
->gen_pdu
.resp_wr_ptr
++;
1541 __iscsi_complete_pdu(conn
, (struct iscsi_hdr
*)resp_hdr
,
1542 bnx2i_conn
->gen_pdu
.resp_buf
,
1543 bnx2i_conn
->gen_pdu
.resp_wr_ptr
-
1544 bnx2i_conn
->gen_pdu
.resp_buf
);
1546 spin_unlock(&session
->lock
);
1552 * bnx2i_process_tmf_resp - this function handles iscsi TMF response
1553 * @session: iscsi session pointer
1554 * @bnx2i_conn: iscsi connection pointer
1555 * @cqe: pointer to newly DMA'ed CQE entry for processing
1557 * process iSCSI TMF Response CQE and wake up the driver eh thread.
1559 static int bnx2i_process_tmf_resp(struct iscsi_session
*session
,
1560 struct bnx2i_conn
*bnx2i_conn
,
1563 struct iscsi_conn
*conn
= bnx2i_conn
->cls_conn
->dd_data
;
1564 struct iscsi_task
*task
;
1565 struct bnx2i_tmf_response
*tmf_cqe
;
1566 struct iscsi_tm_rsp
*resp_hdr
;
1568 tmf_cqe
= (struct bnx2i_tmf_response
*)cqe
;
1569 spin_lock(&session
->lock
);
1570 task
= iscsi_itt_to_task(conn
,
1571 tmf_cqe
->itt
& ISCSI_TMF_RESPONSE_INDEX
);
1575 resp_hdr
= (struct iscsi_tm_rsp
*) &bnx2i_conn
->gen_pdu
.resp_hdr
;
1576 memset(resp_hdr
, 0, sizeof(struct iscsi_hdr
));
1577 resp_hdr
->opcode
= tmf_cqe
->op_code
;
1578 resp_hdr
->max_cmdsn
= cpu_to_be32(tmf_cqe
->max_cmd_sn
);
1579 resp_hdr
->exp_cmdsn
= cpu_to_be32(tmf_cqe
->exp_cmd_sn
);
1580 resp_hdr
->itt
= task
->hdr
->itt
;
1581 resp_hdr
->response
= tmf_cqe
->response
;
1583 __iscsi_complete_pdu(conn
, (struct iscsi_hdr
*)resp_hdr
, NULL
, 0);
1585 spin_unlock(&session
->lock
);
1590 * bnx2i_process_logout_resp - this function handles iscsi logout response
1591 * @session: iscsi session pointer
1592 * @bnx2i_conn: iscsi connection pointer
1593 * @cqe: pointer to newly DMA'ed CQE entry for processing
1595 * process iSCSI Logout Response CQE & make function call to
1596 * notify the user daemon.
1598 static int bnx2i_process_logout_resp(struct iscsi_session
*session
,
1599 struct bnx2i_conn
*bnx2i_conn
,
1602 struct iscsi_conn
*conn
= bnx2i_conn
->cls_conn
->dd_data
;
1603 struct iscsi_task
*task
;
1604 struct bnx2i_logout_response
*logout
;
1605 struct iscsi_logout_rsp
*resp_hdr
;
1607 logout
= (struct bnx2i_logout_response
*) cqe
;
1608 spin_lock(&session
->lock
);
1609 task
= iscsi_itt_to_task(conn
,
1610 logout
->itt
& ISCSI_LOGOUT_RESPONSE_INDEX
);
1614 resp_hdr
= (struct iscsi_logout_rsp
*) &bnx2i_conn
->gen_pdu
.resp_hdr
;
1615 memset(resp_hdr
, 0, sizeof(struct iscsi_hdr
));
1616 resp_hdr
->opcode
= logout
->op_code
;
1617 resp_hdr
->flags
= logout
->response
;
1618 resp_hdr
->hlength
= 0;
1620 resp_hdr
->itt
= task
->hdr
->itt
;
1621 resp_hdr
->statsn
= task
->hdr
->exp_statsn
;
1622 resp_hdr
->exp_cmdsn
= cpu_to_be32(logout
->exp_cmd_sn
);
1623 resp_hdr
->max_cmdsn
= cpu_to_be32(logout
->max_cmd_sn
);
1625 resp_hdr
->t2wait
= cpu_to_be32(logout
->time_to_wait
);
1626 resp_hdr
->t2retain
= cpu_to_be32(logout
->time_to_retain
);
1628 __iscsi_complete_pdu(conn
, (struct iscsi_hdr
*)resp_hdr
, NULL
, 0);
1630 bnx2i_conn
->ep
->state
= EP_STATE_LOGOUT_RESP_RCVD
;
1632 spin_unlock(&session
->lock
);
1637 * bnx2i_process_nopin_local_cmpl - this function handles iscsi nopin CQE
1638 * @session: iscsi session pointer
1639 * @bnx2i_conn: iscsi connection pointer
1640 * @cqe: pointer to newly DMA'ed CQE entry for processing
1642 * process iSCSI NOPIN local completion CQE, frees IIT and command structures
1644 static void bnx2i_process_nopin_local_cmpl(struct iscsi_session
*session
,
1645 struct bnx2i_conn
*bnx2i_conn
,
1648 struct iscsi_conn
*conn
= bnx2i_conn
->cls_conn
->dd_data
;
1649 struct bnx2i_nop_in_msg
*nop_in
;
1650 struct iscsi_task
*task
;
1652 nop_in
= (struct bnx2i_nop_in_msg
*)cqe
;
1653 spin_lock(&session
->lock
);
1654 task
= iscsi_itt_to_task(conn
,
1655 nop_in
->itt
& ISCSI_NOP_IN_MSG_INDEX
);
1657 __iscsi_put_task(task
);
1658 spin_unlock(&session
->lock
);
1662 * bnx2i_unsol_pdu_adjust_rq - makes adjustments to RQ after unsol pdu is recvd
1663 * @conn: iscsi connection
1665 * Firmware advances RQ producer index for every unsolicited PDU even if
1666 * payload data length is '0'. This function makes corresponding
1667 * adjustments on the driver side to match this f/w behavior
1669 static void bnx2i_unsol_pdu_adjust_rq(struct bnx2i_conn
*bnx2i_conn
)
1671 char dummy_rq_data
[2];
1672 bnx2i_get_rq_buf(bnx2i_conn
, dummy_rq_data
, 1);
1673 bnx2i_put_rq_buf(bnx2i_conn
, 1);
1678 * bnx2i_process_nopin_mesg - this function handles iscsi nopin CQE
1679 * @session: iscsi session pointer
1680 * @bnx2i_conn: iscsi connection pointer
1681 * @cqe: pointer to newly DMA'ed CQE entry for processing
1683 * process iSCSI target's proactive iSCSI NOPIN request
1685 static int bnx2i_process_nopin_mesg(struct iscsi_session
*session
,
1686 struct bnx2i_conn
*bnx2i_conn
,
1689 struct iscsi_conn
*conn
= bnx2i_conn
->cls_conn
->dd_data
;
1690 struct iscsi_task
*task
;
1691 struct bnx2i_nop_in_msg
*nop_in
;
1692 struct iscsi_nopin
*hdr
;
1693 int tgt_async_nop
= 0;
1695 nop_in
= (struct bnx2i_nop_in_msg
*)cqe
;
1697 spin_lock(&session
->lock
);
1698 hdr
= (struct iscsi_nopin
*)&bnx2i_conn
->gen_pdu
.resp_hdr
;
1699 memset(hdr
, 0, sizeof(struct iscsi_hdr
));
1700 hdr
->opcode
= nop_in
->op_code
;
1701 hdr
->max_cmdsn
= cpu_to_be32(nop_in
->max_cmd_sn
);
1702 hdr
->exp_cmdsn
= cpu_to_be32(nop_in
->exp_cmd_sn
);
1703 hdr
->ttt
= cpu_to_be32(nop_in
->ttt
);
1705 if (nop_in
->itt
== (u16
) RESERVED_ITT
) {
1706 bnx2i_unsol_pdu_adjust_rq(bnx2i_conn
);
1707 hdr
->itt
= RESERVED_ITT
;
1712 /* this is a response to one of our nop-outs */
1713 task
= iscsi_itt_to_task(conn
,
1714 (itt_t
) (nop_in
->itt
& ISCSI_NOP_IN_MSG_INDEX
));
1716 hdr
->flags
= ISCSI_FLAG_CMD_FINAL
;
1717 hdr
->itt
= task
->hdr
->itt
;
1718 hdr
->ttt
= cpu_to_be32(nop_in
->ttt
);
1719 memcpy(&hdr
->lun
, nop_in
->lun
, 8);
1722 __iscsi_complete_pdu(conn
, (struct iscsi_hdr
*)hdr
, NULL
, 0);
1723 spin_unlock(&session
->lock
);
1725 return tgt_async_nop
;
1730 * bnx2i_process_async_mesg - this function handles iscsi async message
1731 * @session: iscsi session pointer
1732 * @bnx2i_conn: iscsi connection pointer
1733 * @cqe: pointer to newly DMA'ed CQE entry for processing
1735 * process iSCSI ASYNC Message
1737 static void bnx2i_process_async_mesg(struct iscsi_session
*session
,
1738 struct bnx2i_conn
*bnx2i_conn
,
1741 struct bnx2i_async_msg
*async_cqe
;
1742 struct iscsi_async
*resp_hdr
;
1745 bnx2i_unsol_pdu_adjust_rq(bnx2i_conn
);
1747 async_cqe
= (struct bnx2i_async_msg
*)cqe
;
1748 async_event
= async_cqe
->async_event
;
1750 if (async_event
== ISCSI_ASYNC_MSG_SCSI_EVENT
) {
1751 iscsi_conn_printk(KERN_ALERT
, bnx2i_conn
->cls_conn
->dd_data
,
1752 "async: scsi events not supported\n");
1756 spin_lock(&session
->lock
);
1757 resp_hdr
= (struct iscsi_async
*) &bnx2i_conn
->gen_pdu
.resp_hdr
;
1758 memset(resp_hdr
, 0, sizeof(struct iscsi_hdr
));
1759 resp_hdr
->opcode
= async_cqe
->op_code
;
1760 resp_hdr
->flags
= 0x80;
1762 memcpy(&resp_hdr
->lun
, async_cqe
->lun
, 8);
1763 resp_hdr
->exp_cmdsn
= cpu_to_be32(async_cqe
->exp_cmd_sn
);
1764 resp_hdr
->max_cmdsn
= cpu_to_be32(async_cqe
->max_cmd_sn
);
1766 resp_hdr
->async_event
= async_cqe
->async_event
;
1767 resp_hdr
->async_vcode
= async_cqe
->async_vcode
;
1769 resp_hdr
->param1
= cpu_to_be16(async_cqe
->param1
);
1770 resp_hdr
->param2
= cpu_to_be16(async_cqe
->param2
);
1771 resp_hdr
->param3
= cpu_to_be16(async_cqe
->param3
);
1773 __iscsi_complete_pdu(bnx2i_conn
->cls_conn
->dd_data
,
1774 (struct iscsi_hdr
*)resp_hdr
, NULL
, 0);
1775 spin_unlock(&session
->lock
);
1780 * bnx2i_process_reject_mesg - process iscsi reject pdu
1781 * @session: iscsi session pointer
1782 * @bnx2i_conn: iscsi connection pointer
1783 * @cqe: pointer to newly DMA'ed CQE entry for processing
1785 * process iSCSI REJECT message
1787 static void bnx2i_process_reject_mesg(struct iscsi_session
*session
,
1788 struct bnx2i_conn
*bnx2i_conn
,
1791 struct iscsi_conn
*conn
= bnx2i_conn
->cls_conn
->dd_data
;
1792 struct bnx2i_reject_msg
*reject
;
1793 struct iscsi_reject
*hdr
;
1795 reject
= (struct bnx2i_reject_msg
*) cqe
;
1796 if (reject
->data_length
) {
1797 bnx2i_get_rq_buf(bnx2i_conn
, conn
->data
, reject
->data_length
);
1798 bnx2i_put_rq_buf(bnx2i_conn
, 1);
1800 bnx2i_unsol_pdu_adjust_rq(bnx2i_conn
);
1802 spin_lock(&session
->lock
);
1803 hdr
= (struct iscsi_reject
*) &bnx2i_conn
->gen_pdu
.resp_hdr
;
1804 memset(hdr
, 0, sizeof(struct iscsi_hdr
));
1805 hdr
->opcode
= reject
->op_code
;
1806 hdr
->reason
= reject
->reason
;
1807 hton24(hdr
->dlength
, reject
->data_length
);
1808 hdr
->max_cmdsn
= cpu_to_be32(reject
->max_cmd_sn
);
1809 hdr
->exp_cmdsn
= cpu_to_be32(reject
->exp_cmd_sn
);
1810 hdr
->ffffffff
= cpu_to_be32(RESERVED_ITT
);
1811 __iscsi_complete_pdu(conn
, (struct iscsi_hdr
*)hdr
, conn
->data
,
1812 reject
->data_length
);
1813 spin_unlock(&session
->lock
);
1817 * bnx2i_process_cmd_cleanup_resp - process scsi command clean-up completion
1818 * @session: iscsi session pointer
1819 * @bnx2i_conn: iscsi connection pointer
1820 * @cqe: pointer to newly DMA'ed CQE entry for processing
1822 * process command cleanup response CQE during conn shutdown or error recovery
1824 static void bnx2i_process_cmd_cleanup_resp(struct iscsi_session
*session
,
1825 struct bnx2i_conn
*bnx2i_conn
,
1828 struct bnx2i_cleanup_response
*cmd_clean_rsp
;
1829 struct iscsi_conn
*conn
= bnx2i_conn
->cls_conn
->dd_data
;
1830 struct iscsi_task
*task
;
1832 cmd_clean_rsp
= (struct bnx2i_cleanup_response
*)cqe
;
1833 spin_lock(&session
->lock
);
1834 task
= iscsi_itt_to_task(conn
,
1835 cmd_clean_rsp
->itt
& ISCSI_CLEANUP_RESPONSE_INDEX
);
1837 printk(KERN_ALERT
"bnx2i: cmd clean ITT %x not active\n",
1838 cmd_clean_rsp
->itt
& ISCSI_CLEANUP_RESPONSE_INDEX
);
1839 spin_unlock(&session
->lock
);
1840 complete(&bnx2i_conn
->cmd_cleanup_cmpl
);
1845 * bnx2i_percpu_io_thread - thread per cpu for ios
1847 * @arg: ptr to bnx2i_percpu_info structure
1849 int bnx2i_percpu_io_thread(void *arg
)
1851 struct bnx2i_percpu_s
*p
= arg
;
1852 struct bnx2i_work
*work
, *tmp
;
1853 LIST_HEAD(work_list
);
1855 set_user_nice(current
, -20);
1857 while (!kthread_should_stop()) {
1858 spin_lock_bh(&p
->p_work_lock
);
1859 while (!list_empty(&p
->work_list
)) {
1860 list_splice_init(&p
->work_list
, &work_list
);
1861 spin_unlock_bh(&p
->p_work_lock
);
1863 list_for_each_entry_safe(work
, tmp
, &work_list
, list
) {
1864 list_del_init(&work
->list
);
1865 /* work allocated in the bh, freed here */
1866 bnx2i_process_scsi_cmd_resp(work
->session
,
1869 atomic_dec(&work
->bnx2i_conn
->work_cnt
);
1872 spin_lock_bh(&p
->p_work_lock
);
1874 set_current_state(TASK_INTERRUPTIBLE
);
1875 spin_unlock_bh(&p
->p_work_lock
);
1878 __set_current_state(TASK_RUNNING
);
1885 * bnx2i_queue_scsi_cmd_resp - queue cmd completion to the percpu thread
1886 * @bnx2i_conn: bnx2i connection
1888 * this function is called by generic KCQ handler to queue all pending cmd
1891 * The implementation is to queue the cmd response based on the
1892 * last recorded command for the given connection. The
1893 * cpu_id gets recorded upon task_xmit. No out-of-order completion!
1895 static int bnx2i_queue_scsi_cmd_resp(struct iscsi_session
*session
,
1896 struct bnx2i_conn
*bnx2i_conn
,
1897 struct bnx2i_nop_in_msg
*cqe
)
1899 struct bnx2i_work
*bnx2i_work
= NULL
;
1900 struct bnx2i_percpu_s
*p
= NULL
;
1901 struct iscsi_task
*task
;
1902 struct scsi_cmnd
*sc
;
1906 spin_lock(&session
->lock
);
1907 task
= iscsi_itt_to_task(bnx2i_conn
->cls_conn
->dd_data
,
1908 cqe
->itt
& ISCSI_CMD_RESPONSE_INDEX
);
1910 spin_unlock(&session
->lock
);
1914 spin_unlock(&session
->lock
);
1916 if (!blk_rq_cpu_valid(sc
->request
))
1917 cpu
= smp_processor_id();
1919 cpu
= sc
->request
->cpu
;
1921 p
= &per_cpu(bnx2i_percpu
, cpu
);
1922 spin_lock(&p
->p_work_lock
);
1923 if (unlikely(!p
->iothread
)) {
1927 /* Alloc and copy to the cqe */
1928 bnx2i_work
= kzalloc(sizeof(struct bnx2i_work
), GFP_ATOMIC
);
1930 INIT_LIST_HEAD(&bnx2i_work
->list
);
1931 bnx2i_work
->session
= session
;
1932 bnx2i_work
->bnx2i_conn
= bnx2i_conn
;
1933 memcpy(&bnx2i_work
->cqe
, cqe
, sizeof(struct cqe
));
1934 list_add_tail(&bnx2i_work
->list
, &p
->work_list
);
1935 atomic_inc(&bnx2i_conn
->work_cnt
);
1936 wake_up_process(p
->iothread
);
1937 spin_unlock(&p
->p_work_lock
);
1942 spin_unlock(&p
->p_work_lock
);
1943 bnx2i_process_scsi_cmd_resp(session
, bnx2i_conn
, (struct cqe
*)cqe
);
1950 * bnx2i_process_new_cqes - process newly DMA'ed CQE's
1951 * @bnx2i_conn: bnx2i connection
1953 * this function is called by generic KCQ handler to process all pending CQE's
1955 static int bnx2i_process_new_cqes(struct bnx2i_conn
*bnx2i_conn
)
1957 struct iscsi_conn
*conn
= bnx2i_conn
->cls_conn
->dd_data
;
1958 struct iscsi_session
*session
= conn
->session
;
1960 struct bnx2i_nop_in_msg
*nopin
;
1964 if (bnx2i_conn
->ep
== NULL
)
1967 qp
= &bnx2i_conn
->ep
->qp
;
1970 printk(KERN_ALERT
"bnx2i (%s): cq resr freed in bh execution!",
1971 bnx2i_conn
->hba
->netdev
->name
);
1975 nopin
= (struct bnx2i_nop_in_msg
*) qp
->cq_cons_qe
;
1976 if (nopin
->cq_req_sn
!= qp
->cqe_exp_seq_sn
)
1979 if (unlikely(test_bit(ISCSI_SUSPEND_BIT
, &conn
->suspend_rx
))) {
1980 if (nopin
->op_code
== ISCSI_OP_NOOP_IN
&&
1981 nopin
->itt
== (u16
) RESERVED_ITT
) {
1982 printk(KERN_ALERT
"bnx2i: Unsolicited "
1983 "NOP-In detected for suspended "
1984 "connection dev=%s!\n",
1985 bnx2i_conn
->hba
->netdev
->name
);
1986 bnx2i_unsol_pdu_adjust_rq(bnx2i_conn
);
1993 switch (nopin
->op_code
) {
1994 case ISCSI_OP_SCSI_CMD_RSP
:
1995 case ISCSI_OP_SCSI_DATA_IN
:
1996 /* Run the kthread engine only for data cmds
1997 All other cmds will be completed in this bh! */
1998 bnx2i_queue_scsi_cmd_resp(session
, bnx2i_conn
, nopin
);
2000 case ISCSI_OP_LOGIN_RSP
:
2001 bnx2i_process_login_resp(session
, bnx2i_conn
,
2004 case ISCSI_OP_SCSI_TMFUNC_RSP
:
2005 bnx2i_process_tmf_resp(session
, bnx2i_conn
,
2008 case ISCSI_OP_TEXT_RSP
:
2009 bnx2i_process_text_resp(session
, bnx2i_conn
,
2012 case ISCSI_OP_LOGOUT_RSP
:
2013 bnx2i_process_logout_resp(session
, bnx2i_conn
,
2016 case ISCSI_OP_NOOP_IN
:
2017 if (bnx2i_process_nopin_mesg(session
, bnx2i_conn
,
2021 case ISCSI_OPCODE_NOPOUT_LOCAL_COMPLETION
:
2022 bnx2i_process_nopin_local_cmpl(session
, bnx2i_conn
,
2025 case ISCSI_OP_ASYNC_EVENT
:
2026 bnx2i_process_async_mesg(session
, bnx2i_conn
,
2030 case ISCSI_OP_REJECT
:
2031 bnx2i_process_reject_mesg(session
, bnx2i_conn
,
2034 case ISCSI_OPCODE_CLEANUP_RESPONSE
:
2035 bnx2i_process_cmd_cleanup_resp(session
, bnx2i_conn
,
2039 printk(KERN_ALERT
"bnx2i: unknown opcode 0x%x\n",
2042 if (!tgt_async_msg
) {
2043 if (!atomic_read(&bnx2i_conn
->ep
->num_active_cmds
))
2044 printk(KERN_ALERT
"bnx2i (%s): no active cmd! "
2046 bnx2i_conn
->hba
->netdev
->name
,
2049 atomic_dec(&bnx2i_conn
->ep
->num_active_cmds
);
2052 /* clear out in production version only, till beta keep opcode
2053 * field intact, will be helpful in debugging (context dump)
2054 * nopin->op_code = 0;
2057 qp
->cqe_exp_seq_sn
++;
2058 if (qp
->cqe_exp_seq_sn
== (qp
->cqe_size
* 2 + 1))
2059 qp
->cqe_exp_seq_sn
= ISCSI_INITIAL_SN
;
2061 if (qp
->cq_cons_qe
== qp
->cq_last_qe
) {
2062 qp
->cq_cons_qe
= qp
->cq_first_qe
;
2063 qp
->cq_cons_idx
= 0;
2074 * bnx2i_fastpath_notification - process global event queue (KCQ)
2075 * @hba: adapter structure pointer
2076 * @new_cqe_kcqe: pointer to newly DMA'ed KCQE entry
2078 * Fast path event notification handler, KCQ entry carries context id
2079 * of the connection that has 1 or more pending CQ entries
2081 static void bnx2i_fastpath_notification(struct bnx2i_hba
*hba
,
2082 struct iscsi_kcqe
*new_cqe_kcqe
)
2084 struct bnx2i_conn
*bnx2i_conn
;
2088 iscsi_cid
= new_cqe_kcqe
->iscsi_conn_id
;
2089 bnx2i_conn
= bnx2i_get_conn_from_id(hba
, iscsi_cid
);
2092 printk(KERN_ALERT
"cid #%x not valid\n", iscsi_cid
);
2095 if (!bnx2i_conn
->ep
) {
2096 printk(KERN_ALERT
"cid #%x - ep not bound\n", iscsi_cid
);
2100 bnx2i_process_new_cqes(bnx2i_conn
);
2101 nxt_idx
= bnx2i_arm_cq_event_coalescing(bnx2i_conn
->ep
,
2103 if (nxt_idx
&& nxt_idx
== bnx2i_process_new_cqes(bnx2i_conn
))
2104 bnx2i_arm_cq_event_coalescing(bnx2i_conn
->ep
, CNIC_ARM_CQE_FP
);
2109 * bnx2i_process_update_conn_cmpl - process iscsi conn update completion KCQE
2110 * @hba: adapter structure pointer
2111 * @update_kcqe: kcqe pointer
2113 * CONN_UPDATE completion handler, this completes iSCSI connection FFP migration
2115 static void bnx2i_process_update_conn_cmpl(struct bnx2i_hba
*hba
,
2116 struct iscsi_kcqe
*update_kcqe
)
2118 struct bnx2i_conn
*conn
;
2121 iscsi_cid
= update_kcqe
->iscsi_conn_id
;
2122 conn
= bnx2i_get_conn_from_id(hba
, iscsi_cid
);
2125 printk(KERN_ALERT
"conn_update: cid %x not valid\n", iscsi_cid
);
2129 printk(KERN_ALERT
"cid %x does not have ep bound\n", iscsi_cid
);
2133 if (update_kcqe
->completion_status
) {
2134 printk(KERN_ALERT
"request failed cid %x\n", iscsi_cid
);
2135 conn
->ep
->state
= EP_STATE_ULP_UPDATE_FAILED
;
2137 conn
->ep
->state
= EP_STATE_ULP_UPDATE_COMPL
;
2139 wake_up_interruptible(&conn
->ep
->ofld_wait
);
2144 * bnx2i_recovery_que_add_conn - add connection to recovery queue
2145 * @hba: adapter structure pointer
2146 * @bnx2i_conn: iscsi connection
2148 * Add connection to recovery queue and schedule adapter eh worker
2150 static void bnx2i_recovery_que_add_conn(struct bnx2i_hba
*hba
,
2151 struct bnx2i_conn
*bnx2i_conn
)
2153 iscsi_conn_failure(bnx2i_conn
->cls_conn
->dd_data
,
2154 ISCSI_ERR_CONN_FAILED
);
2159 * bnx2i_process_tcp_error - process error notification on a given connection
2161 * @hba: adapter structure pointer
2162 * @tcp_err: tcp error kcqe pointer
2164 * handles tcp level error notifications from FW.
2166 static void bnx2i_process_tcp_error(struct bnx2i_hba
*hba
,
2167 struct iscsi_kcqe
*tcp_err
)
2169 struct bnx2i_conn
*bnx2i_conn
;
2172 iscsi_cid
= tcp_err
->iscsi_conn_id
;
2173 bnx2i_conn
= bnx2i_get_conn_from_id(hba
, iscsi_cid
);
2176 printk(KERN_ALERT
"bnx2i - cid 0x%x not valid\n", iscsi_cid
);
2180 printk(KERN_ALERT
"bnx2i - cid 0x%x had TCP errors, error code 0x%x\n",
2181 iscsi_cid
, tcp_err
->completion_status
);
2182 bnx2i_recovery_que_add_conn(bnx2i_conn
->hba
, bnx2i_conn
);
2187 * bnx2i_process_iscsi_error - process error notification on a given connection
2188 * @hba: adapter structure pointer
2189 * @iscsi_err: iscsi error kcqe pointer
2191 * handles iscsi error notifications from the FW. Firmware based in initial
2192 * handshake classifies iscsi protocol / TCP rfc violation into either
2193 * warning or error indications. If indication is of "Error" type, driver
2194 * will initiate session recovery for that connection/session. For
2195 * "Warning" type indication, driver will put out a system log message
2196 * (there will be only one message for each type for the life of the
2197 * session, this is to avoid un-necessarily overloading the system)
2199 static void bnx2i_process_iscsi_error(struct bnx2i_hba
*hba
,
2200 struct iscsi_kcqe
*iscsi_err
)
2202 struct bnx2i_conn
*bnx2i_conn
;
2204 char warn_notice
[] = "iscsi_warning";
2205 char error_notice
[] = "iscsi_error";
2206 char additional_notice
[64];
2211 iscsi_cid
= iscsi_err
->iscsi_conn_id
;
2212 bnx2i_conn
= bnx2i_get_conn_from_id(hba
, iscsi_cid
);
2214 printk(KERN_ALERT
"bnx2i - cid 0x%x not valid\n", iscsi_cid
);
2218 err_mask64
= (0x1ULL
<< iscsi_err
->completion_status
);
2220 if (err_mask64
& iscsi_error_mask
) {
2222 message
= warn_notice
;
2225 message
= error_notice
;
2228 switch (iscsi_err
->completion_status
) {
2229 case ISCSI_KCQE_COMPLETION_STATUS_HDR_DIG_ERR
:
2230 strcpy(additional_notice
, "hdr digest err");
2232 case ISCSI_KCQE_COMPLETION_STATUS_DATA_DIG_ERR
:
2233 strcpy(additional_notice
, "data digest err");
2235 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_OPCODE
:
2236 strcpy(additional_notice
, "wrong opcode rcvd");
2238 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_AHS_LEN
:
2239 strcpy(additional_notice
, "AHS len > 0 rcvd");
2241 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_ITT
:
2242 strcpy(additional_notice
, "invalid ITT rcvd");
2244 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_STATSN
:
2245 strcpy(additional_notice
, "wrong StatSN rcvd");
2247 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_EXP_DATASN
:
2248 strcpy(additional_notice
, "wrong DataSN rcvd");
2250 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T
:
2251 strcpy(additional_notice
, "pend R2T violation");
2253 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_0
:
2254 strcpy(additional_notice
, "ERL0, UO");
2256 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_1
:
2257 strcpy(additional_notice
, "ERL0, U1");
2259 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_2
:
2260 strcpy(additional_notice
, "ERL0, U2");
2262 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_3
:
2263 strcpy(additional_notice
, "ERL0, U3");
2265 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_4
:
2266 strcpy(additional_notice
, "ERL0, U4");
2268 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_5
:
2269 strcpy(additional_notice
, "ERL0, U5");
2271 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_6
:
2272 strcpy(additional_notice
, "ERL0, U6");
2274 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REMAIN_RCV_LEN
:
2275 strcpy(additional_notice
, "invalid resi len");
2277 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_MAX_RCV_PDU_LEN
:
2278 strcpy(additional_notice
, "MRDSL violation");
2280 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_F_BIT_ZERO
:
2281 strcpy(additional_notice
, "F-bit not set");
2283 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_NOT_RSRV
:
2284 strcpy(additional_notice
, "invalid TTT");
2286 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DATASN
:
2287 strcpy(additional_notice
, "invalid DataSN");
2289 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REMAIN_BURST_LEN
:
2290 strcpy(additional_notice
, "burst len violation");
2292 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_BUFFER_OFF
:
2293 strcpy(additional_notice
, "buf offset violation");
2295 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_LUN
:
2296 strcpy(additional_notice
, "invalid LUN field");
2298 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_R2TSN
:
2299 strcpy(additional_notice
, "invalid R2TSN field");
2301 #define BNX2I_ERR_DESIRED_DATA_TRNS_LEN_0 \
2302 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_0
2303 case BNX2I_ERR_DESIRED_DATA_TRNS_LEN_0
:
2304 strcpy(additional_notice
, "invalid cmd len1");
2306 #define BNX2I_ERR_DESIRED_DATA_TRNS_LEN_1 \
2307 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_1
2308 case BNX2I_ERR_DESIRED_DATA_TRNS_LEN_1
:
2309 strcpy(additional_notice
, "invalid cmd len2");
2311 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T_EXCEED
:
2312 strcpy(additional_notice
,
2313 "pend r2t exceeds MaxOutstandingR2T value");
2315 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_IS_RSRV
:
2316 strcpy(additional_notice
, "TTT is rsvd");
2318 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_MAX_BURST_LEN
:
2319 strcpy(additional_notice
, "MBL violation");
2321 #define BNX2I_ERR_DATA_SEG_LEN_NOT_ZERO \
2322 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DATA_SEG_LEN_NOT_ZERO
2323 case BNX2I_ERR_DATA_SEG_LEN_NOT_ZERO
:
2324 strcpy(additional_notice
, "data seg len != 0");
2326 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REJECT_PDU_LEN
:
2327 strcpy(additional_notice
, "reject pdu len error");
2329 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_ASYNC_PDU_LEN
:
2330 strcpy(additional_notice
, "async pdu len error");
2332 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_NOPIN_PDU_LEN
:
2333 strcpy(additional_notice
, "nopin pdu len error");
2335 #define BNX2_ERR_PEND_R2T_IN_CLEANUP \
2336 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T_IN_CLEANUP
2337 case BNX2_ERR_PEND_R2T_IN_CLEANUP
:
2338 strcpy(additional_notice
, "pend r2t in cleanup");
2341 case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_IP_FRAGMENT
:
2342 strcpy(additional_notice
, "IP fragments rcvd");
2344 case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_IP_OPTIONS
:
2345 strcpy(additional_notice
, "IP options error");
2347 case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_URGENT_FLAG
:
2348 strcpy(additional_notice
, "urgent flag error");
2351 printk(KERN_ALERT
"iscsi_err - unknown err %x\n",
2352 iscsi_err
->completion_status
);
2355 if (need_recovery
) {
2356 iscsi_conn_printk(KERN_ALERT
,
2357 bnx2i_conn
->cls_conn
->dd_data
,
2359 message
, additional_notice
);
2361 iscsi_conn_printk(KERN_ALERT
,
2362 bnx2i_conn
->cls_conn
->dd_data
,
2363 "conn_err - hostno %d conn %p, "
2364 "iscsi_cid %x cid %x\n",
2365 bnx2i_conn
->hba
->shost
->host_no
,
2366 bnx2i_conn
, bnx2i_conn
->ep
->ep_iscsi_cid
,
2367 bnx2i_conn
->ep
->ep_cid
);
2368 bnx2i_recovery_que_add_conn(bnx2i_conn
->hba
, bnx2i_conn
);
2370 if (!test_and_set_bit(iscsi_err
->completion_status
,
2371 (void *) &bnx2i_conn
->violation_notified
))
2372 iscsi_conn_printk(KERN_ALERT
,
2373 bnx2i_conn
->cls_conn
->dd_data
,
2375 message
, additional_notice
);
2380 * bnx2i_process_conn_destroy_cmpl - process iscsi conn destroy completion
2381 * @hba: adapter structure pointer
2382 * @conn_destroy: conn destroy kcqe pointer
2384 * handles connection destroy completion request.
2386 static void bnx2i_process_conn_destroy_cmpl(struct bnx2i_hba
*hba
,
2387 struct iscsi_kcqe
*conn_destroy
)
2389 struct bnx2i_endpoint
*ep
;
2391 ep
= bnx2i_find_ep_in_destroy_list(hba
, conn_destroy
->iscsi_conn_id
);
2393 printk(KERN_ALERT
"bnx2i_conn_destroy_cmpl: no pending "
2394 "offload request, unexpected complection\n");
2398 if (hba
!= ep
->hba
) {
2399 printk(KERN_ALERT
"conn destroy- error hba mis-match\n");
2403 if (conn_destroy
->completion_status
) {
2404 printk(KERN_ALERT
"conn_destroy_cmpl: op failed\n");
2405 ep
->state
= EP_STATE_CLEANUP_FAILED
;
2407 ep
->state
= EP_STATE_CLEANUP_CMPL
;
2408 wake_up_interruptible(&ep
->ofld_wait
);
2413 * bnx2i_process_ofld_cmpl - process initial iscsi conn offload completion
2414 * @hba: adapter structure pointer
2415 * @ofld_kcqe: conn offload kcqe pointer
2417 * handles initial connection offload completion, ep_connect() thread is
2418 * woken-up to continue with LLP connect process
2420 static void bnx2i_process_ofld_cmpl(struct bnx2i_hba
*hba
,
2421 struct iscsi_kcqe
*ofld_kcqe
)
2424 struct bnx2i_endpoint
*ep
;
2427 ep
= bnx2i_find_ep_in_ofld_list(hba
, ofld_kcqe
->iscsi_conn_id
);
2429 printk(KERN_ALERT
"ofld_cmpl: no pend offload request\n");
2433 if (hba
!= ep
->hba
) {
2434 printk(KERN_ALERT
"ofld_cmpl: error hba mis-match\n");
2438 if (ofld_kcqe
->completion_status
) {
2439 ep
->state
= EP_STATE_OFLD_FAILED
;
2440 if (ofld_kcqe
->completion_status
==
2441 ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE
)
2442 printk(KERN_ALERT
"bnx2i (%s): ofld1 cmpl - unable "
2443 "to allocate iSCSI context resources\n",
2445 else if (ofld_kcqe
->completion_status
==
2446 ISCSI_KCQE_COMPLETION_STATUS_INVALID_OPCODE
)
2447 printk(KERN_ALERT
"bnx2i (%s): ofld1 cmpl - invalid "
2448 "opcode\n", hba
->netdev
->name
);
2449 else if (ofld_kcqe
->completion_status
==
2450 ISCSI_KCQE_COMPLETION_STATUS_CID_BUSY
)
2451 /* error status code valid only for 5771x chipset */
2452 ep
->state
= EP_STATE_OFLD_FAILED_CID_BUSY
;
2454 printk(KERN_ALERT
"bnx2i (%s): ofld1 cmpl - invalid "
2455 "error code %d\n", hba
->netdev
->name
,
2456 ofld_kcqe
->completion_status
);
2458 ep
->state
= EP_STATE_OFLD_COMPL
;
2459 cid_addr
= ofld_kcqe
->iscsi_conn_context_id
;
2460 cid_num
= bnx2i_get_cid_num(ep
);
2461 ep
->ep_cid
= cid_addr
;
2462 ep
->qp
.ctx_base
= NULL
;
2464 wake_up_interruptible(&ep
->ofld_wait
);
2468 * bnx2i_indicate_kcqe - process iscsi conn update completion KCQE
2469 * @hba: adapter structure pointer
2470 * @update_kcqe: kcqe pointer
2472 * Generic KCQ event handler/dispatcher
2474 static void bnx2i_indicate_kcqe(void *context
, struct kcqe
*kcqe
[],
2477 struct bnx2i_hba
*hba
= context
;
2479 struct iscsi_kcqe
*ikcqe
= NULL
;
2481 while (i
< num_cqe
) {
2482 ikcqe
= (struct iscsi_kcqe
*) kcqe
[i
++];
2484 if (ikcqe
->op_code
==
2485 ISCSI_KCQE_OPCODE_CQ_EVENT_NOTIFICATION
)
2486 bnx2i_fastpath_notification(hba
, ikcqe
);
2487 else if (ikcqe
->op_code
== ISCSI_KCQE_OPCODE_OFFLOAD_CONN
)
2488 bnx2i_process_ofld_cmpl(hba
, ikcqe
);
2489 else if (ikcqe
->op_code
== ISCSI_KCQE_OPCODE_UPDATE_CONN
)
2490 bnx2i_process_update_conn_cmpl(hba
, ikcqe
);
2491 else if (ikcqe
->op_code
== ISCSI_KCQE_OPCODE_INIT
) {
2492 if (ikcqe
->completion_status
!=
2493 ISCSI_KCQE_COMPLETION_STATUS_SUCCESS
)
2494 bnx2i_iscsi_license_error(hba
, ikcqe
->\
2497 set_bit(ADAPTER_STATE_UP
, &hba
->adapter_state
);
2498 bnx2i_get_link_state(hba
);
2499 printk(KERN_INFO
"bnx2i [%.2x:%.2x.%.2x]: "
2500 "ISCSI_INIT passed\n",
2501 (u8
)hba
->pcidev
->bus
->number
,
2507 } else if (ikcqe
->op_code
== ISCSI_KCQE_OPCODE_DESTROY_CONN
)
2508 bnx2i_process_conn_destroy_cmpl(hba
, ikcqe
);
2509 else if (ikcqe
->op_code
== ISCSI_KCQE_OPCODE_ISCSI_ERROR
)
2510 bnx2i_process_iscsi_error(hba
, ikcqe
);
2511 else if (ikcqe
->op_code
== ISCSI_KCQE_OPCODE_TCP_ERROR
)
2512 bnx2i_process_tcp_error(hba
, ikcqe
);
2514 printk(KERN_ALERT
"bnx2i: unknown opcode 0x%x\n",
2521 * bnx2i_indicate_netevent - Generic netdev event handler
2522 * @context: adapter structure pointer
2523 * @event: event type
2524 * @vlan_id: vlans id - associated vlan id with this event
2526 * Handles four netdev events, NETDEV_UP, NETDEV_DOWN,
2527 * NETDEV_GOING_DOWN and NETDEV_CHANGE
2529 static void bnx2i_indicate_netevent(void *context
, unsigned long event
,
2532 struct bnx2i_hba
*hba
= context
;
2534 /* Ignore all netevent coming from vlans */
2540 if (!test_bit(ADAPTER_STATE_UP
, &hba
->adapter_state
))
2541 bnx2i_send_fw_iscsi_init_msg(hba
);
2544 clear_bit(ADAPTER_STATE_GOING_DOWN
, &hba
->adapter_state
);
2545 clear_bit(ADAPTER_STATE_UP
, &hba
->adapter_state
);
2547 case NETDEV_GOING_DOWN
:
2548 set_bit(ADAPTER_STATE_GOING_DOWN
, &hba
->adapter_state
);
2549 iscsi_host_for_each_session(hba
->shost
,
2550 bnx2i_drop_session
);
2553 bnx2i_get_link_state(hba
);
2562 * bnx2i_cm_connect_cmpl - process iscsi conn establishment completion
2563 * @cm_sk: cnic sock structure pointer
2565 * function callback exported via bnx2i - cnic driver interface to
2566 * indicate completion of option-2 TCP connect request.
2568 static void bnx2i_cm_connect_cmpl(struct cnic_sock
*cm_sk
)
2570 struct bnx2i_endpoint
*ep
= (struct bnx2i_endpoint
*) cm_sk
->context
;
2572 if (test_bit(ADAPTER_STATE_GOING_DOWN
, &ep
->hba
->adapter_state
))
2573 ep
->state
= EP_STATE_CONNECT_FAILED
;
2574 else if (test_bit(SK_F_OFFLD_COMPLETE
, &cm_sk
->flags
))
2575 ep
->state
= EP_STATE_CONNECT_COMPL
;
2577 ep
->state
= EP_STATE_CONNECT_FAILED
;
2579 wake_up_interruptible(&ep
->ofld_wait
);
2584 * bnx2i_cm_close_cmpl - process tcp conn close completion
2585 * @cm_sk: cnic sock structure pointer
2587 * function callback exported via bnx2i - cnic driver interface to
2588 * indicate completion of option-2 graceful TCP connect shutdown
2590 static void bnx2i_cm_close_cmpl(struct cnic_sock
*cm_sk
)
2592 struct bnx2i_endpoint
*ep
= (struct bnx2i_endpoint
*) cm_sk
->context
;
2594 ep
->state
= EP_STATE_DISCONN_COMPL
;
2595 wake_up_interruptible(&ep
->ofld_wait
);
2600 * bnx2i_cm_abort_cmpl - process abortive tcp conn teardown completion
2601 * @cm_sk: cnic sock structure pointer
2603 * function callback exported via bnx2i - cnic driver interface to
2604 * indicate completion of option-2 abortive TCP connect termination
2606 static void bnx2i_cm_abort_cmpl(struct cnic_sock
*cm_sk
)
2608 struct bnx2i_endpoint
*ep
= (struct bnx2i_endpoint
*) cm_sk
->context
;
2610 ep
->state
= EP_STATE_DISCONN_COMPL
;
2611 wake_up_interruptible(&ep
->ofld_wait
);
2616 * bnx2i_cm_remote_close - process received TCP FIN
2617 * @hba: adapter structure pointer
2618 * @update_kcqe: kcqe pointer
2620 * function callback exported via bnx2i - cnic driver interface to indicate
2621 * async TCP events such as FIN
2623 static void bnx2i_cm_remote_close(struct cnic_sock
*cm_sk
)
2625 struct bnx2i_endpoint
*ep
= (struct bnx2i_endpoint
*) cm_sk
->context
;
2627 ep
->state
= EP_STATE_TCP_FIN_RCVD
;
2629 bnx2i_recovery_que_add_conn(ep
->hba
, ep
->conn
);
2633 * bnx2i_cm_remote_abort - process TCP RST and start conn cleanup
2634 * @hba: adapter structure pointer
2635 * @update_kcqe: kcqe pointer
2637 * function callback exported via bnx2i - cnic driver interface to
2638 * indicate async TCP events (RST) sent by the peer.
2640 static void bnx2i_cm_remote_abort(struct cnic_sock
*cm_sk
)
2642 struct bnx2i_endpoint
*ep
= (struct bnx2i_endpoint
*) cm_sk
->context
;
2643 u32 old_state
= ep
->state
;
2645 ep
->state
= EP_STATE_TCP_RST_RCVD
;
2646 if (old_state
== EP_STATE_DISCONN_START
)
2647 wake_up_interruptible(&ep
->ofld_wait
);
2650 bnx2i_recovery_que_add_conn(ep
->hba
, ep
->conn
);
2654 static int bnx2i_send_nl_mesg(void *context
, u32 msg_type
,
2655 char *buf
, u16 buflen
)
2657 struct bnx2i_hba
*hba
= context
;
2663 rc
= iscsi_offload_mesg(hba
->shost
, &bnx2i_iscsi_transport
,
2664 msg_type
, buf
, buflen
);
2666 printk(KERN_ALERT
"bnx2i: private nl message send error\n");
2673 * bnx2i_cnic_cb - global template of bnx2i - cnic driver interface structure
2674 * carrying callback function pointers
2677 struct cnic_ulp_ops bnx2i_cnic_cb
= {
2678 .cnic_init
= bnx2i_ulp_init
,
2679 .cnic_exit
= bnx2i_ulp_exit
,
2680 .cnic_start
= bnx2i_start
,
2681 .cnic_stop
= bnx2i_stop
,
2682 .indicate_kcqes
= bnx2i_indicate_kcqe
,
2683 .indicate_netevent
= bnx2i_indicate_netevent
,
2684 .cm_connect_complete
= bnx2i_cm_connect_cmpl
,
2685 .cm_close_complete
= bnx2i_cm_close_cmpl
,
2686 .cm_abort_complete
= bnx2i_cm_abort_cmpl
,
2687 .cm_remote_close
= bnx2i_cm_remote_close
,
2688 .cm_remote_abort
= bnx2i_cm_remote_abort
,
2689 .iscsi_nl_send_msg
= bnx2i_send_nl_mesg
,
2690 .owner
= THIS_MODULE
2695 * bnx2i_map_ep_dbell_regs - map connection doorbell registers
2696 * @ep: bnx2i endpoint
2698 * maps connection's SQ and RQ doorbell registers, 5706/5708/5709 hosts these
2699 * register in BAR #0. Whereas in 57710 these register are accessed by
2702 int bnx2i_map_ep_dbell_regs(struct bnx2i_endpoint
*ep
)
2709 resource_size_t reg_base
;
2711 cid_num
= bnx2i_get_cid_num(ep
);
2713 if (test_bit(BNX2I_NX2_DEV_57710
, &ep
->hba
->cnic_dev_type
)) {
2714 reg_base
= pci_resource_start(ep
->hba
->pcidev
,
2715 BNX2X_DOORBELL_PCI_BAR
);
2716 reg_off
= BNX2I_5771X_DBELL_PAGE_SIZE
* (cid_num
& 0x1FFFF) +
2718 ep
->qp
.ctx_base
= ioremap_nocache(reg_base
+ reg_off
, 4);
2722 reg_base
= ep
->hba
->netdev
->base_addr
;
2723 if ((test_bit(BNX2I_NX2_DEV_5709
, &ep
->hba
->cnic_dev_type
)) &&
2724 (ep
->hba
->mail_queue_access
== BNX2I_MQ_BIN_MODE
)) {
2725 config2
= REG_RD(ep
->hba
, BNX2_MQ_CONFIG2
);
2726 first_l4l5
= config2
& BNX2_MQ_CONFIG2_FIRST_L4L5
;
2727 ctx_sz
= (config2
& BNX2_MQ_CONFIG2_CONT_SZ
) >> 3;
2729 reg_off
= CTX_OFFSET
+ MAX_CID_CNT
* MB_KERNEL_CTX_SIZE
2730 + BNX2I_570X_PAGE_SIZE_DEFAULT
*
2731 (((cid_num
- first_l4l5
) / ctx_sz
) + 256);
2733 reg_off
= CTX_OFFSET
+ (MB_KERNEL_CTX_SIZE
* cid_num
);
2735 /* 5709 device in normal node and 5706/5708 devices */
2736 reg_off
= CTX_OFFSET
+ (MB_KERNEL_CTX_SIZE
* cid_num
);
2738 ep
->qp
.ctx_base
= ioremap_nocache(reg_base
+ reg_off
,
2739 MB_KERNEL_CTX_SIZE
);
2740 if (!ep
->qp
.ctx_base
)
2744 bnx2i_arm_cq_event_coalescing(ep
, CNIC_ARM_CQE
);