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ARM: btc: avoid invalidating the branch target cache on kernel TLB maintanence
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / scsi / bnx2i / bnx2i_hwi.c
blob5c54a2d9b83424d002c81bf7990a9dbe25acb501
1 /* bnx2i_hwi.c: Broadcom NetXtreme II iSCSI driver.
2 *
3 * Copyright (c) 2006 - 2010 Broadcom Corporation
4 * Copyright (c) 2007, 2008 Red Hat, Inc. All rights reserved.
5 * Copyright (c) 2007, 2008 Mike Christie
6 *
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.
10 *
11 * Written by: Anil Veerabhadrappa (anilgv@broadcom.com)
12 * Maintained by: Eddie Wai (eddie.wai@broadcom.com)
13 */
14
15 #include <linux/gfp.h>
16 #include <scsi/scsi_tcq.h>
17 #include <scsi/libiscsi.h>
18 #include "bnx2i.h"
19
20 /**
21 * bnx2i_get_cid_num - get cid from ep
22 * @ep: endpoint pointer
23 *
24 * Only applicable to 57710 family of devices
25 */
26 static u32 bnx2i_get_cid_num(struct bnx2i_endpoint *ep)
27 {
28 u32 cid;
29
30 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type))
31 cid = ep->ep_cid;
32 else
33 cid = GET_CID_NUM(ep->ep_cid);
34 return cid;
35 }
36
37
38 /**
39 * bnx2i_adjust_qp_size - Adjust SQ/RQ/CQ size for 57710 device type
40 * @hba: Adapter for which adjustments is to be made
41 *
42 * Only applicable to 57710 family of devices
43 */
44 static void bnx2i_adjust_qp_size(struct bnx2i_hba *hba)
45 {
46 u32 num_elements_per_pg;
47
48 if (test_bit(BNX2I_NX2_DEV_5706, &hba->cnic_dev_type) ||
49 test_bit(BNX2I_NX2_DEV_5708, &hba->cnic_dev_type) ||
50 test_bit(BNX2I_NX2_DEV_5709, &hba->cnic_dev_type)) {
51 if (!is_power_of_2(hba->max_sqes))
52 hba->max_sqes = rounddown_pow_of_two(hba->max_sqes);
53
54 if (!is_power_of_2(hba->max_rqes))
55 hba->max_rqes = rounddown_pow_of_two(hba->max_rqes);
56 }
57
58 /* Adjust each queue size if the user selection does not
59 * yield integral num of page buffers
60 */
61 /* adjust SQ */
62 num_elements_per_pg = PAGE_SIZE / BNX2I_SQ_WQE_SIZE;
63 if (hba->max_sqes < num_elements_per_pg)
64 hba->max_sqes = num_elements_per_pg;
65 else if (hba->max_sqes % num_elements_per_pg)
66 hba->max_sqes = (hba->max_sqes + num_elements_per_pg - 1) &
67 ~(num_elements_per_pg - 1);
68
69 /* adjust CQ */
70 num_elements_per_pg = PAGE_SIZE / BNX2I_CQE_SIZE;
71 if (hba->max_cqes < num_elements_per_pg)
72 hba->max_cqes = num_elements_per_pg;
73 else if (hba->max_cqes % num_elements_per_pg)
74 hba->max_cqes = (hba->max_cqes + num_elements_per_pg - 1) &
75 ~(num_elements_per_pg - 1);
76
77 /* adjust RQ */
78 num_elements_per_pg = PAGE_SIZE / BNX2I_RQ_WQE_SIZE;
79 if (hba->max_rqes < num_elements_per_pg)
80 hba->max_rqes = num_elements_per_pg;
81 else if (hba->max_rqes % num_elements_per_pg)
82 hba->max_rqes = (hba->max_rqes + num_elements_per_pg - 1) &
83 ~(num_elements_per_pg - 1);
84 }
85
86
87 /**
88 * bnx2i_get_link_state - get network interface link state
89 * @hba: adapter instance pointer
90 *
91 * updates adapter structure flag based on netdev state
92 */
93 static void bnx2i_get_link_state(struct bnx2i_hba *hba)
94 {
95 if (test_bit(__LINK_STATE_NOCARRIER, &hba->netdev->state))
96 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
97 else
98 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
99 }
100
101
102 /**
103 * bnx2i_iscsi_license_error - displays iscsi license related error message
104 * @hba: adapter instance pointer
105 * @error_code: error classification
106 *
107 * Puts out an error log when driver is unable to offload iscsi connection
108 * due to license restrictions
109 */
110 static void bnx2i_iscsi_license_error(struct bnx2i_hba *hba, u32 error_code)
111 {
112 if (error_code == ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED)
113 /* iSCSI offload not supported on this device */
114 printk(KERN_ERR "bnx2i: iSCSI not supported, dev=%s\n",
115 hba->netdev->name);
116 if (error_code == ISCSI_KCQE_COMPLETION_STATUS_LOM_ISCSI_NOT_ENABLED)
117 /* iSCSI offload not supported on this LOM device */
118 printk(KERN_ERR "bnx2i: LOM is not enable to "
119 "offload iSCSI connections, dev=%s\n",
120 hba->netdev->name);
121 set_bit(ADAPTER_STATE_INIT_FAILED, &hba->adapter_state);
122 }
123
124
125 /**
126 * bnx2i_arm_cq_event_coalescing - arms CQ to enable EQ notification
127 * @ep: endpoint (transport indentifier) structure
128 * @action: action, ARM or DISARM. For now only ARM_CQE is used
129 *
130 * Arm'ing CQ will enable chip to generate global EQ events inorder to interrupt
131 * the driver. EQ event is generated CQ index is hit or at least 1 CQ is
132 * outstanding and on chip timer expires
133 */
134 void bnx2i_arm_cq_event_coalescing(struct bnx2i_endpoint *ep, u8 action)
135 {
136 struct bnx2i_5771x_cq_db *cq_db;
137 u16 cq_index;
138 u16 next_index;
139 u32 num_active_cmds;
140
141 /* Coalesce CQ entries only on 10G devices */
142 if (!test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type))
143 return;
144
145 /* Do not update CQ DB multiple times before firmware writes
146 * '0xFFFF' to CQDB->SQN field. Deviation may cause spurious
147 * interrupts and other unwanted results
148 */
149 cq_db = (struct bnx2i_5771x_cq_db *) ep->qp.cq_pgtbl_virt;
150
151 if (action != CNIC_ARM_CQE_FP)
152 if (cq_db->sqn[0] && cq_db->sqn[0] != 0xFFFF)
153 return;
154
155 if (action == CNIC_ARM_CQE || action == CNIC_ARM_CQE_FP) {
156 num_active_cmds = ep->num_active_cmds;
157 if (num_active_cmds <= event_coal_min)
158 next_index = 1;
159 else
160 next_index = event_coal_min +
161 ((num_active_cmds - event_coal_min) >>
162 ep->ec_shift);
163 if (!next_index)
164 next_index = 1;
165 cq_index = ep->qp.cqe_exp_seq_sn + next_index - 1;
166 if (cq_index > ep->qp.cqe_size * 2)
167 cq_index -= ep->qp.cqe_size * 2;
168 if (!cq_index)
169 cq_index = 1;
170
171 cq_db->sqn[0] = cq_index;
172 }
173 }
174
175
176 /**
177 * bnx2i_get_rq_buf - copy RQ buffer contents to driver buffer
178 * @conn: iscsi connection on which RQ event occurred
179 * @ptr: driver buffer to which RQ buffer contents is to
180 * be copied
181 * @len: length of valid data inside RQ buf
182 *
183 * Copies RQ buffer contents from shared (DMA'able) memory region to
184 * driver buffer. RQ is used to DMA unsolicitated iscsi pdu's and
185 * scsi sense info
186 */
187 void bnx2i_get_rq_buf(struct bnx2i_conn *bnx2i_conn, char *ptr, int len)
188 {
189 if (!bnx2i_conn->ep->qp.rqe_left)
190 return;
191
192 bnx2i_conn->ep->qp.rqe_left--;
193 memcpy(ptr, (u8 *) bnx2i_conn->ep->qp.rq_cons_qe, len);
194 if (bnx2i_conn->ep->qp.rq_cons_qe == bnx2i_conn->ep->qp.rq_last_qe) {
195 bnx2i_conn->ep->qp.rq_cons_qe = bnx2i_conn->ep->qp.rq_first_qe;
196 bnx2i_conn->ep->qp.rq_cons_idx = 0;
197 } else {
198 bnx2i_conn->ep->qp.rq_cons_qe++;
199 bnx2i_conn->ep->qp.rq_cons_idx++;
200 }
201 }
202
203
204 static void bnx2i_ring_577xx_doorbell(struct bnx2i_conn *conn)
205 {
206 struct bnx2i_5771x_dbell dbell;
207 u32 msg;
208
209 memset(&dbell, 0, sizeof(dbell));
210 dbell.dbell.header = (B577XX_ISCSI_CONNECTION_TYPE <<
211 B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT);
212 msg = *((u32 *)&dbell);
213 /* TODO : get doorbell register mapping */
214 writel(cpu_to_le32(msg), conn->ep->qp.ctx_base);
215 }
216
217
218 /**
219 * bnx2i_put_rq_buf - Replenish RQ buffer, if required ring on chip doorbell
220 * @conn: iscsi connection on which event to post
221 * @count: number of RQ buffer being posted to chip
222 *
223 * No need to ring hardware doorbell for 57710 family of devices
224 */
225 void bnx2i_put_rq_buf(struct bnx2i_conn *bnx2i_conn, int count)
226 {
227 struct bnx2i_5771x_sq_rq_db *rq_db;
228 u16 hi_bit = (bnx2i_conn->ep->qp.rq_prod_idx & 0x8000);
229 struct bnx2i_endpoint *ep = bnx2i_conn->ep;
230
231 ep->qp.rqe_left += count;
232 ep->qp.rq_prod_idx &= 0x7FFF;
233 ep->qp.rq_prod_idx += count;
234
235 if (ep->qp.rq_prod_idx > bnx2i_conn->hba->max_rqes) {
236 ep->qp.rq_prod_idx %= bnx2i_conn->hba->max_rqes;
237 if (!hi_bit)
238 ep->qp.rq_prod_idx |= 0x8000;
239 } else
240 ep->qp.rq_prod_idx |= hi_bit;
241
242 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) {
243 rq_db = (struct bnx2i_5771x_sq_rq_db *) ep->qp.rq_pgtbl_virt;
244 rq_db->prod_idx = ep->qp.rq_prod_idx;
245 /* no need to ring hardware doorbell for 57710 */
246 } else {
247 writew(ep->qp.rq_prod_idx,
248 ep->qp.ctx_base + CNIC_RECV_DOORBELL);
249 }
250 mmiowb();
251 }
252
253
254 /**
255 * bnx2i_ring_sq_dbell - Ring SQ doorbell to wake-up the processing engine
256 * @conn: iscsi connection to which new SQ entries belong
257 * @count: number of SQ WQEs to post
258 *
259 * SQ DB is updated in host memory and TX Doorbell is rung for 57710 family
260 * of devices. For 5706/5708/5709 new SQ WQE count is written into the
261 * doorbell register
262 */
263 static void bnx2i_ring_sq_dbell(struct bnx2i_conn *bnx2i_conn, int count)
264 {
265 struct bnx2i_5771x_sq_rq_db *sq_db;
266 struct bnx2i_endpoint *ep = bnx2i_conn->ep;
267
268 ep->num_active_cmds++;
269 wmb(); /* flush SQ WQE memory before the doorbell is rung */
270 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) {
271 sq_db = (struct bnx2i_5771x_sq_rq_db *) ep->qp.sq_pgtbl_virt;
272 sq_db->prod_idx = ep->qp.sq_prod_idx;
273 bnx2i_ring_577xx_doorbell(bnx2i_conn);
274 } else
275 writew(count, ep->qp.ctx_base + CNIC_SEND_DOORBELL);
276
277 mmiowb(); /* flush posted PCI writes */
278 }
279
280
281 /**
282 * bnx2i_ring_dbell_update_sq_params - update SQ driver parameters
283 * @conn: iscsi connection to which new SQ entries belong
284 * @count: number of SQ WQEs to post
285 *
286 * this routine will update SQ driver parameters and ring the doorbell
287 */
288 static void bnx2i_ring_dbell_update_sq_params(struct bnx2i_conn *bnx2i_conn,
289 int count)
290 {
291 int tmp_cnt;
292
293 if (count == 1) {
294 if (bnx2i_conn->ep->qp.sq_prod_qe ==
295 bnx2i_conn->ep->qp.sq_last_qe)
296 bnx2i_conn->ep->qp.sq_prod_qe =
297 bnx2i_conn->ep->qp.sq_first_qe;
298 else
299 bnx2i_conn->ep->qp.sq_prod_qe++;
300 } else {
301 if ((bnx2i_conn->ep->qp.sq_prod_qe + count) <=
302 bnx2i_conn->ep->qp.sq_last_qe)
303 bnx2i_conn->ep->qp.sq_prod_qe += count;
304 else {
305 tmp_cnt = bnx2i_conn->ep->qp.sq_last_qe -
306 bnx2i_conn->ep->qp.sq_prod_qe;
307 bnx2i_conn->ep->qp.sq_prod_qe =
308 &bnx2i_conn->ep->qp.sq_first_qe[count -
309 (tmp_cnt + 1)];
310 }
311 }
312 bnx2i_conn->ep->qp.sq_prod_idx += count;
313 /* Ring the doorbell */
314 bnx2i_ring_sq_dbell(bnx2i_conn, bnx2i_conn->ep->qp.sq_prod_idx);
315 }
316
317
318 /**
319 * bnx2i_send_iscsi_login - post iSCSI login request MP WQE to hardware
320 * @conn: iscsi connection
321 * @cmd: driver command structure which is requesting
322 * a WQE to sent to chip for further processing
323 *
324 * prepare and post an iSCSI Login request WQE to CNIC firmware
325 */
326 int bnx2i_send_iscsi_login(struct bnx2i_conn *bnx2i_conn,
327 struct iscsi_task *task)
328 {
329 struct bnx2i_cmd *bnx2i_cmd;
330 struct bnx2i_login_request *login_wqe;
331 struct iscsi_login *login_hdr;
332 u32 dword;
333
334 bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data;
335 login_hdr = (struct iscsi_login *)task->hdr;
336 login_wqe = (struct bnx2i_login_request *)
337 bnx2i_conn->ep->qp.sq_prod_qe;
338
339 login_wqe->op_code = login_hdr->opcode;
340 login_wqe->op_attr = login_hdr->flags;
341 login_wqe->version_max = login_hdr->max_version;
342 login_wqe->version_min = login_hdr->min_version;
343 login_wqe->data_length = ntoh24(login_hdr->dlength);
344 login_wqe->isid_lo = *((u32 *) login_hdr->isid);
345 login_wqe->isid_hi = *((u16 *) login_hdr->isid + 2);
346 login_wqe->tsih = login_hdr->tsih;
347 login_wqe->itt = task->itt |
348 (ISCSI_TASK_TYPE_MPATH << ISCSI_LOGIN_REQUEST_TYPE_SHIFT);
349 login_wqe->cid = login_hdr->cid;
350
351 login_wqe->cmd_sn = be32_to_cpu(login_hdr->cmdsn);
352 login_wqe->exp_stat_sn = be32_to_cpu(login_hdr->exp_statsn);
353 login_wqe->flags = ISCSI_LOGIN_REQUEST_UPDATE_EXP_STAT_SN;
354
355 login_wqe->resp_bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.resp_bd_dma;
356 login_wqe->resp_bd_list_addr_hi =
357 (u32) ((u64) bnx2i_conn->gen_pdu.resp_bd_dma >> 32);
358
359 dword = ((1 << ISCSI_LOGIN_REQUEST_NUM_RESP_BDS_SHIFT) |
360 (bnx2i_conn->gen_pdu.resp_buf_size <<
361 ISCSI_LOGIN_REQUEST_RESP_BUFFER_LENGTH_SHIFT));
362 login_wqe->resp_buffer = dword;
363 login_wqe->bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.req_bd_dma;
364 login_wqe->bd_list_addr_hi =
365 (u32) ((u64) bnx2i_conn->gen_pdu.req_bd_dma >> 32);
366 login_wqe->num_bds = 1;
367 login_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */
368
369 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1);
370 return 0;
371 }
372
373 /**
374 * bnx2i_send_iscsi_tmf - post iSCSI task management request MP WQE to hardware
375 * @conn: iscsi connection
376 * @mtask: driver command structure which is requesting
377 * a WQE to sent to chip for further processing
378 *
379 * prepare and post an iSCSI Login request WQE to CNIC firmware
380 */
381 int bnx2i_send_iscsi_tmf(struct bnx2i_conn *bnx2i_conn,
382 struct iscsi_task *mtask)
383 {
384 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data;
385 struct iscsi_tm *tmfabort_hdr;
386 struct scsi_cmnd *ref_sc;
387 struct iscsi_task *ctask;
388 struct bnx2i_cmd *bnx2i_cmd;
389 struct bnx2i_tmf_request *tmfabort_wqe;
390 u32 dword;
391 u32 scsi_lun[2];
392
393 bnx2i_cmd = (struct bnx2i_cmd *)mtask->dd_data;
394 tmfabort_hdr = (struct iscsi_tm *)mtask->hdr;
395 tmfabort_wqe = (struct bnx2i_tmf_request *)
396 bnx2i_conn->ep->qp.sq_prod_qe;
397
398 tmfabort_wqe->op_code = tmfabort_hdr->opcode;
399 tmfabort_wqe->op_attr = tmfabort_hdr->flags;
400
401 tmfabort_wqe->itt = (mtask->itt | (ISCSI_TASK_TYPE_MPATH << 14));
402 tmfabort_wqe->reserved2 = 0;
403 tmfabort_wqe->cmd_sn = be32_to_cpu(tmfabort_hdr->cmdsn);
404
405 switch (tmfabort_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) {
406 case ISCSI_TM_FUNC_ABORT_TASK:
407 case ISCSI_TM_FUNC_TASK_REASSIGN:
408 ctask = iscsi_itt_to_task(conn, tmfabort_hdr->rtt);
409 if (!ctask || !ctask->sc)
410 /*
411 * the iscsi layer must have completed the cmd while
412 * was starting up.
413 *
414 * Note: In the case of a SCSI cmd timeout, the task's
415 * sc is still active; hence ctask->sc != 0
416 * In this case, the task must be aborted
417 */
418 return 0;
419
420 ref_sc = ctask->sc;
421 if (ref_sc->sc_data_direction == DMA_TO_DEVICE)
422 dword = (ISCSI_TASK_TYPE_WRITE <<
423 ISCSI_CMD_REQUEST_TYPE_SHIFT);
424 else
425 dword = (ISCSI_TASK_TYPE_READ <<
426 ISCSI_CMD_REQUEST_TYPE_SHIFT);
427 tmfabort_wqe->ref_itt = (dword |
428 (tmfabort_hdr->rtt & ISCSI_ITT_MASK));
429 break;
430 default:
431 tmfabort_wqe->ref_itt = RESERVED_ITT;
432 }
433 memcpy(scsi_lun, tmfabort_hdr->lun, sizeof(struct scsi_lun));
434 tmfabort_wqe->lun[0] = be32_to_cpu(scsi_lun[0]);
435 tmfabort_wqe->lun[1] = be32_to_cpu(scsi_lun[1]);
436
437 tmfabort_wqe->ref_cmd_sn = be32_to_cpu(tmfabort_hdr->refcmdsn);
438
439 tmfabort_wqe->bd_list_addr_lo = (u32) bnx2i_conn->hba->mp_bd_dma;
440 tmfabort_wqe->bd_list_addr_hi = (u32)
441 ((u64) bnx2i_conn->hba->mp_bd_dma >> 32);
442 tmfabort_wqe->num_bds = 1;
443 tmfabort_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */
444
445 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1);
446 return 0;
447 }
448
449 /**
450 * bnx2i_send_iscsi_text - post iSCSI text WQE to hardware
451 * @conn: iscsi connection
452 * @mtask: driver command structure which is requesting
453 * a WQE to sent to chip for further processing
454 *
455 * prepare and post an iSCSI Text request WQE to CNIC firmware
456 */
457 int bnx2i_send_iscsi_text(struct bnx2i_conn *bnx2i_conn,
458 struct iscsi_task *mtask)
459 {
460 struct bnx2i_cmd *bnx2i_cmd;
461 struct bnx2i_text_request *text_wqe;
462 struct iscsi_text *text_hdr;
463 u32 dword;
464
465 bnx2i_cmd = (struct bnx2i_cmd *)mtask->dd_data;
466 text_hdr = (struct iscsi_text *)mtask->hdr;
467 text_wqe = (struct bnx2i_text_request *) bnx2i_conn->ep->qp.sq_prod_qe;
468
469 memset(text_wqe, 0, sizeof(struct bnx2i_text_request));
470
471 text_wqe->op_code = text_hdr->opcode;
472 text_wqe->op_attr = text_hdr->flags;
473 text_wqe->data_length = ntoh24(text_hdr->dlength);
474 text_wqe->itt = mtask->itt |
475 (ISCSI_TASK_TYPE_MPATH << ISCSI_TEXT_REQUEST_TYPE_SHIFT);
476 text_wqe->ttt = be32_to_cpu(text_hdr->ttt);
477
478 text_wqe->cmd_sn = be32_to_cpu(text_hdr->cmdsn);
479
480 text_wqe->resp_bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.resp_bd_dma;
481 text_wqe->resp_bd_list_addr_hi =
482 (u32) ((u64) bnx2i_conn->gen_pdu.resp_bd_dma >> 32);
483
484 dword = ((1 << ISCSI_TEXT_REQUEST_NUM_RESP_BDS_SHIFT) |
485 (bnx2i_conn->gen_pdu.resp_buf_size <<
486 ISCSI_TEXT_REQUEST_RESP_BUFFER_LENGTH_SHIFT));
487 text_wqe->resp_buffer = dword;
488 text_wqe->bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.req_bd_dma;
489 text_wqe->bd_list_addr_hi =
490 (u32) ((u64) bnx2i_conn->gen_pdu.req_bd_dma >> 32);
491 text_wqe->num_bds = 1;
492 text_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */
493
494 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1);
495 return 0;
496 }
497
498
499 /**
500 * bnx2i_send_iscsi_scsicmd - post iSCSI scsicmd request WQE to hardware
501 * @conn: iscsi connection
502 * @cmd: driver command structure which is requesting
503 * a WQE to sent to chip for further processing
504 *
505 * prepare and post an iSCSI SCSI-CMD request WQE to CNIC firmware
506 */
507 int bnx2i_send_iscsi_scsicmd(struct bnx2i_conn *bnx2i_conn,
508 struct bnx2i_cmd *cmd)
509 {
510 struct bnx2i_cmd_request *scsi_cmd_wqe;
511
512 scsi_cmd_wqe = (struct bnx2i_cmd_request *)
513 bnx2i_conn->ep->qp.sq_prod_qe;
514 memcpy(scsi_cmd_wqe, &cmd->req, sizeof(struct bnx2i_cmd_request));
515 scsi_cmd_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */
516
517 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1);
518 return 0;
519 }
520
521 /**
522 * bnx2i_send_iscsi_nopout - post iSCSI NOPOUT request WQE to hardware
523 * @conn: iscsi connection
524 * @cmd: driver command structure which is requesting
525 * a WQE to sent to chip for further processing
526 * @datap: payload buffer pointer
527 * @data_len: payload data length
528 * @unsol: indicated whether nopout pdu is unsolicited pdu or
529 * in response to target's NOPIN w/ TTT != FFFFFFFF
530 *
531 * prepare and post a nopout request WQE to CNIC firmware
532 */
533 int bnx2i_send_iscsi_nopout(struct bnx2i_conn *bnx2i_conn,
534 struct iscsi_task *task,
535 char *datap, int data_len, int unsol)
536 {
537 struct bnx2i_endpoint *ep = bnx2i_conn->ep;
538 struct bnx2i_cmd *bnx2i_cmd;
539 struct bnx2i_nop_out_request *nopout_wqe;
540 struct iscsi_nopout *nopout_hdr;
541
542 bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data;
543 nopout_hdr = (struct iscsi_nopout *)task->hdr;
544 nopout_wqe = (struct bnx2i_nop_out_request *)ep->qp.sq_prod_qe;
545
546 memset(nopout_wqe, 0x00, sizeof(struct bnx2i_nop_out_request));
547
548 nopout_wqe->op_code = nopout_hdr->opcode;
549 nopout_wqe->op_attr = ISCSI_FLAG_CMD_FINAL;
550 memcpy(nopout_wqe->lun, nopout_hdr->lun, 8);
551
552 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) {
553 u32 tmp = nopout_wqe->lun[0];
554 /* 57710 requires LUN field to be swapped */
555 nopout_wqe->lun[0] = nopout_wqe->lun[1];
556 nopout_wqe->lun[1] = tmp;
557 }
558
559 nopout_wqe->itt = ((u16)task->itt |
560 (ISCSI_TASK_TYPE_MPATH <<
561 ISCSI_TMF_REQUEST_TYPE_SHIFT));
562 nopout_wqe->ttt = nopout_hdr->ttt;
563 nopout_wqe->flags = 0;
564 if (!unsol)
565 nopout_wqe->flags = ISCSI_NOP_OUT_REQUEST_LOCAL_COMPLETION;
566 else if (nopout_hdr->itt == RESERVED_ITT)
567 nopout_wqe->flags = ISCSI_NOP_OUT_REQUEST_LOCAL_COMPLETION;
568
569 nopout_wqe->cmd_sn = be32_to_cpu(nopout_hdr->cmdsn);
570 nopout_wqe->data_length = data_len;
571 if (data_len) {
572 /* handle payload data, not required in first release */
573 printk(KERN_ALERT "NOPOUT: WARNING!! payload len != 0\n");
574 } else {
575 nopout_wqe->bd_list_addr_lo = (u32)
576 bnx2i_conn->hba->mp_bd_dma;
577 nopout_wqe->bd_list_addr_hi =
578 (u32) ((u64) bnx2i_conn->hba->mp_bd_dma >> 32);
579 nopout_wqe->num_bds = 1;
580 }
581 nopout_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */
582
583 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1);
584 return 0;
585 }
586
587
588 /**
589 * bnx2i_send_iscsi_logout - post iSCSI logout request WQE to hardware
590 * @conn: iscsi connection
591 * @cmd: driver command structure which is requesting
592 * a WQE to sent to chip for further processing
593 *
594 * prepare and post logout request WQE to CNIC firmware
595 */
596 int bnx2i_send_iscsi_logout(struct bnx2i_conn *bnx2i_conn,
597 struct iscsi_task *task)
598 {
599 struct bnx2i_cmd *bnx2i_cmd;
600 struct bnx2i_logout_request *logout_wqe;
601 struct iscsi_logout *logout_hdr;
602
603 bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data;
604 logout_hdr = (struct iscsi_logout *)task->hdr;
605
606 logout_wqe = (struct bnx2i_logout_request *)
607 bnx2i_conn->ep->qp.sq_prod_qe;
608 memset(logout_wqe, 0x00, sizeof(struct bnx2i_logout_request));
609
610 logout_wqe->op_code = logout_hdr->opcode;
611 logout_wqe->cmd_sn = be32_to_cpu(logout_hdr->cmdsn);
612 logout_wqe->op_attr =
613 logout_hdr->flags | ISCSI_LOGOUT_REQUEST_ALWAYS_ONE;
614 logout_wqe->itt = ((u16)task->itt |
615 (ISCSI_TASK_TYPE_MPATH <<
616 ISCSI_LOGOUT_REQUEST_TYPE_SHIFT));
617 logout_wqe->data_length = 0;
618 logout_wqe->cid = 0;
619
620 logout_wqe->bd_list_addr_lo = (u32) bnx2i_conn->hba->mp_bd_dma;
621 logout_wqe->bd_list_addr_hi = (u32)
622 ((u64) bnx2i_conn->hba->mp_bd_dma >> 32);
623 logout_wqe->num_bds = 1;
624 logout_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */
625
626 bnx2i_conn->ep->state = EP_STATE_LOGOUT_SENT;
627
628 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1);
629 return 0;
630 }
631
632
633 /**
634 * bnx2i_update_iscsi_conn - post iSCSI logout request WQE to hardware
635 * @conn: iscsi connection which requires iscsi parameter update
636 *
637 * sends down iSCSI Conn Update request to move iSCSI conn to FFP
638 */
639 void bnx2i_update_iscsi_conn(struct iscsi_conn *conn)
640 {
641 struct bnx2i_conn *bnx2i_conn = conn->dd_data;
642 struct bnx2i_hba *hba = bnx2i_conn->hba;
643 struct kwqe *kwqe_arr[2];
644 struct iscsi_kwqe_conn_update *update_wqe;
645 struct iscsi_kwqe_conn_update conn_update_kwqe;
646
647 update_wqe = &conn_update_kwqe;
648
649 update_wqe->hdr.op_code = ISCSI_KWQE_OPCODE_UPDATE_CONN;
650 update_wqe->hdr.flags =
651 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT);
652
653 /* 5771x requires conn context id to be passed as is */
654 if (test_bit(BNX2I_NX2_DEV_57710, &bnx2i_conn->ep->hba->cnic_dev_type))
655 update_wqe->context_id = bnx2i_conn->ep->ep_cid;
656 else
657 update_wqe->context_id = (bnx2i_conn->ep->ep_cid >> 7);
658 update_wqe->conn_flags = 0;
659 if (conn->hdrdgst_en)
660 update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_HEADER_DIGEST;
661 if (conn->datadgst_en)
662 update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_DATA_DIGEST;
663 if (conn->session->initial_r2t_en)
664 update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_INITIAL_R2T;
665 if (conn->session->imm_data_en)
666 update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_IMMEDIATE_DATA;
667
668 update_wqe->max_send_pdu_length = conn->max_xmit_dlength;
669 update_wqe->max_recv_pdu_length = conn->max_recv_dlength;
670 update_wqe->first_burst_length = conn->session->first_burst;
671 update_wqe->max_burst_length = conn->session->max_burst;
672 update_wqe->exp_stat_sn = conn->exp_statsn;
673 update_wqe->max_outstanding_r2ts = conn->session->max_r2t;
674 update_wqe->session_error_recovery_level = conn->session->erl;
675 iscsi_conn_printk(KERN_ALERT, conn,
676 "bnx2i: conn update - MBL 0x%x FBL 0x%x"
677 "MRDSL_I 0x%x MRDSL_T 0x%x \n",
678 update_wqe->max_burst_length,
679 update_wqe->first_burst_length,
680 update_wqe->max_recv_pdu_length,
681 update_wqe->max_send_pdu_length);
682
683 kwqe_arr[0] = (struct kwqe *) update_wqe;
684 if (hba->cnic && hba->cnic->submit_kwqes)
685 hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 1);
686 }
687
688
689 /**
690 * bnx2i_ep_ofld_timer - post iSCSI logout request WQE to hardware
691 * @data: endpoint (transport handle) structure pointer
692 *
693 * routine to handle connection offload/destroy request timeout
694 */
695 void bnx2i_ep_ofld_timer(unsigned long data)
696 {
697 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) data;
698
699 if (ep->state == EP_STATE_OFLD_START) {
700 printk(KERN_ALERT "ofld_timer: CONN_OFLD timeout\n");
701 ep->state = EP_STATE_OFLD_FAILED;
702 } else if (ep->state == EP_STATE_DISCONN_START) {
703 printk(KERN_ALERT "ofld_timer: CONN_DISCON timeout\n");
704 ep->state = EP_STATE_DISCONN_TIMEDOUT;
705 } else if (ep->state == EP_STATE_CLEANUP_START) {
706 printk(KERN_ALERT "ofld_timer: CONN_CLEANUP timeout\n");
707 ep->state = EP_STATE_CLEANUP_FAILED;
708 }
709
710 wake_up_interruptible(&ep->ofld_wait);
711 }
712
713
714 static int bnx2i_power_of2(u32 val)
715 {
716 u32 power = 0;
717 if (val & (val - 1))
718 return power;
719 val--;
720 while (val) {
721 val = val >> 1;
722 power++;
723 }
724 return power;
725 }
726
727
728 /**
729 * bnx2i_send_cmd_cleanup_req - send iscsi cmd context clean-up request
730 * @hba: adapter structure pointer
731 * @cmd: driver command structure which is requesting
732 * a WQE to sent to chip for further processing
733 *
734 * prepares and posts CONN_OFLD_REQ1/2 KWQE
735 */
736 void bnx2i_send_cmd_cleanup_req(struct bnx2i_hba *hba, struct bnx2i_cmd *cmd)
737 {
738 struct bnx2i_cleanup_request *cmd_cleanup;
739
740 cmd_cleanup =
741 (struct bnx2i_cleanup_request *)cmd->conn->ep->qp.sq_prod_qe;
742 memset(cmd_cleanup, 0x00, sizeof(struct bnx2i_cleanup_request));
743
744 cmd_cleanup->op_code = ISCSI_OPCODE_CLEANUP_REQUEST;
745 cmd_cleanup->itt = cmd->req.itt;
746 cmd_cleanup->cq_index = 0; /* CQ# used for completion, 5771x only */
747
748 bnx2i_ring_dbell_update_sq_params(cmd->conn, 1);
749 }
750
751
752 /**
753 * bnx2i_send_conn_destroy - initiates iscsi connection teardown process
754 * @hba: adapter structure pointer
755 * @ep: endpoint (transport indentifier) structure
756 *
757 * this routine prepares and posts CONN_OFLD_REQ1/2 KWQE to initiate
758 * iscsi connection context clean-up process
759 */
760 int bnx2i_send_conn_destroy(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep)
761 {
762 struct kwqe *kwqe_arr[2];
763 struct iscsi_kwqe_conn_destroy conn_cleanup;
764 int rc = -EINVAL;
765
766 memset(&conn_cleanup, 0x00, sizeof(struct iscsi_kwqe_conn_destroy));
767
768 conn_cleanup.hdr.op_code = ISCSI_KWQE_OPCODE_DESTROY_CONN;
769 conn_cleanup.hdr.flags =
770 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT);
771 /* 5771x requires conn context id to be passed as is */
772 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type))
773 conn_cleanup.context_id = ep->ep_cid;
774 else
775 conn_cleanup.context_id = (ep->ep_cid >> 7);
776
777 conn_cleanup.reserved0 = (u16)ep->ep_iscsi_cid;
778
779 kwqe_arr[0] = (struct kwqe *) &conn_cleanup;
780 if (hba->cnic && hba->cnic->submit_kwqes)
781 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 1);
782
783 return rc;
784 }
785
786
787 /**
788 * bnx2i_570x_send_conn_ofld_req - initiates iscsi conn context setup process
789 * @hba: adapter structure pointer
790 * @ep: endpoint (transport indentifier) structure
791 *
792 * 5706/5708/5709 specific - prepares and posts CONN_OFLD_REQ1/2 KWQE
793 */
794 static int bnx2i_570x_send_conn_ofld_req(struct bnx2i_hba *hba,
795 struct bnx2i_endpoint *ep)
796 {
797 struct kwqe *kwqe_arr[2];
798 struct iscsi_kwqe_conn_offload1 ofld_req1;
799 struct iscsi_kwqe_conn_offload2 ofld_req2;
800 dma_addr_t dma_addr;
801 int num_kwqes = 2;
802 u32 *ptbl;
803 int rc = -EINVAL;
804
805 ofld_req1.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN1;
806 ofld_req1.hdr.flags =
807 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT);
808
809 ofld_req1.iscsi_conn_id = (u16) ep->ep_iscsi_cid;
810
811 dma_addr = ep->qp.sq_pgtbl_phys;
812 ofld_req1.sq_page_table_addr_lo = (u32) dma_addr;
813 ofld_req1.sq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32);
814
815 dma_addr = ep->qp.cq_pgtbl_phys;
816 ofld_req1.cq_page_table_addr_lo = (u32) dma_addr;
817 ofld_req1.cq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32);
818
819 ofld_req2.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN2;
820 ofld_req2.hdr.flags =
821 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT);
822
823 dma_addr = ep->qp.rq_pgtbl_phys;
824 ofld_req2.rq_page_table_addr_lo = (u32) dma_addr;
825 ofld_req2.rq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32);
826
827 ptbl = (u32 *) ep->qp.sq_pgtbl_virt;
828
829 ofld_req2.sq_first_pte.hi = *ptbl++;
830 ofld_req2.sq_first_pte.lo = *ptbl;
831
832 ptbl = (u32 *) ep->qp.cq_pgtbl_virt;
833 ofld_req2.cq_first_pte.hi = *ptbl++;
834 ofld_req2.cq_first_pte.lo = *ptbl;
835
836 kwqe_arr[0] = (struct kwqe *) &ofld_req1;
837 kwqe_arr[1] = (struct kwqe *) &ofld_req2;
838 ofld_req2.num_additional_wqes = 0;
839
840 if (hba->cnic && hba->cnic->submit_kwqes)
841 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
842
843 return rc;
844 }
845
846
847 /**
848 * bnx2i_5771x_send_conn_ofld_req - initiates iscsi connection context creation
849 * @hba: adapter structure pointer
850 * @ep: endpoint (transport indentifier) structure
851 *
852 * 57710 specific - prepares and posts CONN_OFLD_REQ1/2 KWQE
853 */
854 static int bnx2i_5771x_send_conn_ofld_req(struct bnx2i_hba *hba,
855 struct bnx2i_endpoint *ep)
856 {
857 struct kwqe *kwqe_arr[5];
858 struct iscsi_kwqe_conn_offload1 ofld_req1;
859 struct iscsi_kwqe_conn_offload2 ofld_req2;
860 struct iscsi_kwqe_conn_offload3 ofld_req3[1];
861 dma_addr_t dma_addr;
862 int num_kwqes = 2;
863 u32 *ptbl;
864 int rc = -EINVAL;
865
866 ofld_req1.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN1;
867 ofld_req1.hdr.flags =
868 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT);
869
870 ofld_req1.iscsi_conn_id = (u16) ep->ep_iscsi_cid;
871
872 dma_addr = ep->qp.sq_pgtbl_phys + ISCSI_SQ_DB_SIZE;
873 ofld_req1.sq_page_table_addr_lo = (u32) dma_addr;
874 ofld_req1.sq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32);
875
876 dma_addr = ep->qp.cq_pgtbl_phys + ISCSI_CQ_DB_SIZE;
877 ofld_req1.cq_page_table_addr_lo = (u32) dma_addr;
878 ofld_req1.cq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32);
879
880 ofld_req2.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN2;
881 ofld_req2.hdr.flags =
882 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT);
883
884 dma_addr = ep->qp.rq_pgtbl_phys + ISCSI_RQ_DB_SIZE;
885 ofld_req2.rq_page_table_addr_lo = (u32) dma_addr;
886 ofld_req2.rq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32);
887
888 ptbl = (u32 *)((u8 *)ep->qp.sq_pgtbl_virt + ISCSI_SQ_DB_SIZE);
889 ofld_req2.sq_first_pte.hi = *ptbl++;
890 ofld_req2.sq_first_pte.lo = *ptbl;
891
892 ptbl = (u32 *)((u8 *)ep->qp.cq_pgtbl_virt + ISCSI_CQ_DB_SIZE);
893 ofld_req2.cq_first_pte.hi = *ptbl++;
894 ofld_req2.cq_first_pte.lo = *ptbl;
895
896 kwqe_arr[0] = (struct kwqe *) &ofld_req1;
897 kwqe_arr[1] = (struct kwqe *) &ofld_req2;
898
899 ofld_req2.num_additional_wqes = 1;
900 memset(ofld_req3, 0x00, sizeof(ofld_req3[0]));
901 ptbl = (u32 *)((u8 *)ep->qp.rq_pgtbl_virt + ISCSI_RQ_DB_SIZE);
902 ofld_req3[0].qp_first_pte[0].hi = *ptbl++;
903 ofld_req3[0].qp_first_pte[0].lo = *ptbl;
904
905 kwqe_arr[2] = (struct kwqe *) ofld_req3;
906 /* need if we decide to go with multiple KCQE's per conn */
907 num_kwqes += 1;
908
909 if (hba->cnic && hba->cnic->submit_kwqes)
910 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
911
912 return rc;
913 }
914
915 /**
916 * bnx2i_send_conn_ofld_req - initiates iscsi connection context setup process
917 *
918 * @hba: adapter structure pointer
919 * @ep: endpoint (transport indentifier) structure
920 *
921 * this routine prepares and posts CONN_OFLD_REQ1/2 KWQE
922 */
923 int bnx2i_send_conn_ofld_req(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep)
924 {
925 int rc;
926
927 if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type))
928 rc = bnx2i_5771x_send_conn_ofld_req(hba, ep);
929 else
930 rc = bnx2i_570x_send_conn_ofld_req(hba, ep);
931
932 return rc;
933 }
934
935
936 /**
937 * setup_qp_page_tables - iscsi QP page table setup function
938 * @ep: endpoint (transport indentifier) structure
939 *
940 * Sets up page tables for SQ/RQ/CQ, 1G/sec (5706/5708/5709) devices requires
941 * 64-bit address in big endian format. Whereas 10G/sec (57710) requires
942 * PT in little endian format
943 */
944 static void setup_qp_page_tables(struct bnx2i_endpoint *ep)
945 {
946 int num_pages;
947 u32 *ptbl;
948 dma_addr_t page;
949 int cnic_dev_10g;
950
951 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type))
952 cnic_dev_10g = 1;
953 else
954 cnic_dev_10g = 0;
955
956 /* SQ page table */
957 memset(ep->qp.sq_pgtbl_virt, 0, ep->qp.sq_pgtbl_size);
958 num_pages = ep->qp.sq_mem_size / PAGE_SIZE;
959 page = ep->qp.sq_phys;
960
961 if (cnic_dev_10g)
962 ptbl = (u32 *)((u8 *)ep->qp.sq_pgtbl_virt + ISCSI_SQ_DB_SIZE);
963 else
964 ptbl = (u32 *) ep->qp.sq_pgtbl_virt;
965 while (num_pages--) {
966 if (cnic_dev_10g) {
967 /* PTE is written in little endian format for 57710 */
968 *ptbl = (u32) page;
969 ptbl++;
970 *ptbl = (u32) ((u64) page >> 32);
971 ptbl++;
972 page += PAGE_SIZE;
973 } else {
974 /* PTE is written in big endian format for
975 * 5706/5708/5709 devices */
976 *ptbl = (u32) ((u64) page >> 32);
977 ptbl++;
978 *ptbl = (u32) page;
979 ptbl++;
980 page += PAGE_SIZE;
981 }
982 }
983
984 /* RQ page table */
985 memset(ep->qp.rq_pgtbl_virt, 0, ep->qp.rq_pgtbl_size);
986 num_pages = ep->qp.rq_mem_size / PAGE_SIZE;
987 page = ep->qp.rq_phys;
988
989 if (cnic_dev_10g)
990 ptbl = (u32 *)((u8 *)ep->qp.rq_pgtbl_virt + ISCSI_RQ_DB_SIZE);
991 else
992 ptbl = (u32 *) ep->qp.rq_pgtbl_virt;
993 while (num_pages--) {
994 if (cnic_dev_10g) {
995 /* PTE is written in little endian format for 57710 */
996 *ptbl = (u32) page;
997 ptbl++;
998 *ptbl = (u32) ((u64) page >> 32);
999 ptbl++;
1000 page += PAGE_SIZE;
1001 } else {
1002 /* PTE is written in big endian format for
1003 * 5706/5708/5709 devices */
1004 *ptbl = (u32) ((u64) page >> 32);
1005 ptbl++;
1006 *ptbl = (u32) page;
1007 ptbl++;
1008 page += PAGE_SIZE;
1009 }
1010 }
1011
1012 /* CQ page table */
1013 memset(ep->qp.cq_pgtbl_virt, 0, ep->qp.cq_pgtbl_size);
1014 num_pages = ep->qp.cq_mem_size / PAGE_SIZE;
1015 page = ep->qp.cq_phys;
1016
1017 if (cnic_dev_10g)
1018 ptbl = (u32 *)((u8 *)ep->qp.cq_pgtbl_virt + ISCSI_CQ_DB_SIZE);
1019 else
1020 ptbl = (u32 *) ep->qp.cq_pgtbl_virt;
1021 while (num_pages--) {
1022 if (cnic_dev_10g) {
1023 /* PTE is written in little endian format for 57710 */
1024 *ptbl = (u32) page;
1025 ptbl++;
1026 *ptbl = (u32) ((u64) page >> 32);
1027 ptbl++;
1028 page += PAGE_SIZE;
1029 } else {
1030 /* PTE is written in big endian format for
1031 * 5706/5708/5709 devices */
1032 *ptbl = (u32) ((u64) page >> 32);
1033 ptbl++;
1034 *ptbl = (u32) page;
1035 ptbl++;
1036 page += PAGE_SIZE;
1037 }
1038 }
1039 }
1040
1041
1042 /**
1043 * bnx2i_alloc_qp_resc - allocates required resources for QP.
1044 * @hba: adapter structure pointer
1045 * @ep: endpoint (transport indentifier) structure
1046 *
1047 * Allocate QP (transport layer for iSCSI connection) resources, DMA'able
1048 * memory for SQ/RQ/CQ and page tables. EP structure elements such
1049 * as producer/consumer indexes/pointers, queue sizes and page table
1050 * contents are setup
1051 */
1052 int bnx2i_alloc_qp_resc(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep)
1053 {
1054 struct bnx2i_5771x_cq_db *cq_db;
1055
1056 ep->hba = hba;
1057 ep->conn = NULL;
1058 ep->ep_cid = ep->ep_iscsi_cid = ep->ep_pg_cid = 0;
1059
1060 /* Allocate page table memory for SQ which is page aligned */
1061 ep->qp.sq_mem_size = hba->max_sqes * BNX2I_SQ_WQE_SIZE;
1062 ep->qp.sq_mem_size =
1063 (ep->qp.sq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK;
1064 ep->qp.sq_pgtbl_size =
1065 (ep->qp.sq_mem_size / PAGE_SIZE) * sizeof(void *);
1066 ep->qp.sq_pgtbl_size =
1067 (ep->qp.sq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK;
1068
1069 ep->qp.sq_pgtbl_virt =
1070 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.sq_pgtbl_size,
1071 &ep->qp.sq_pgtbl_phys, GFP_KERNEL);
1072 if (!ep->qp.sq_pgtbl_virt) {
1073 printk(KERN_ALERT "bnx2i: unable to alloc SQ PT mem (%d)\n",
1074 ep->qp.sq_pgtbl_size);
1075 goto mem_alloc_err;
1076 }
1077
1078 /* Allocate memory area for actual SQ element */
1079 ep->qp.sq_virt =
1080 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.sq_mem_size,
1081 &ep->qp.sq_phys, GFP_KERNEL);
1082 if (!ep->qp.sq_virt) {
1083 printk(KERN_ALERT "bnx2i: unable to alloc SQ BD memory %d\n",
1084 ep->qp.sq_mem_size);
1085 goto mem_alloc_err;
1086 }
1087
1088 memset(ep->qp.sq_virt, 0x00, ep->qp.sq_mem_size);
1089 ep->qp.sq_first_qe = ep->qp.sq_virt;
1090 ep->qp.sq_prod_qe = ep->qp.sq_first_qe;
1091 ep->qp.sq_cons_qe = ep->qp.sq_first_qe;
1092 ep->qp.sq_last_qe = &ep->qp.sq_first_qe[hba->max_sqes - 1];
1093 ep->qp.sq_prod_idx = 0;
1094 ep->qp.sq_cons_idx = 0;
1095 ep->qp.sqe_left = hba->max_sqes;
1096
1097 /* Allocate page table memory for CQ which is page aligned */
1098 ep->qp.cq_mem_size = hba->max_cqes * BNX2I_CQE_SIZE;
1099 ep->qp.cq_mem_size =
1100 (ep->qp.cq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK;
1101 ep->qp.cq_pgtbl_size =
1102 (ep->qp.cq_mem_size / PAGE_SIZE) * sizeof(void *);
1103 ep->qp.cq_pgtbl_size =
1104 (ep->qp.cq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK;
1105
1106 ep->qp.cq_pgtbl_virt =
1107 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.cq_pgtbl_size,
1108 &ep->qp.cq_pgtbl_phys, GFP_KERNEL);
1109 if (!ep->qp.cq_pgtbl_virt) {
1110 printk(KERN_ALERT "bnx2i: unable to alloc CQ PT memory %d\n",
1111 ep->qp.cq_pgtbl_size);
1112 goto mem_alloc_err;
1113 }
1114
1115 /* Allocate memory area for actual CQ element */
1116 ep->qp.cq_virt =
1117 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.cq_mem_size,
1118 &ep->qp.cq_phys, GFP_KERNEL);
1119 if (!ep->qp.cq_virt) {
1120 printk(KERN_ALERT "bnx2i: unable to alloc CQ BD memory %d\n",
1121 ep->qp.cq_mem_size);
1122 goto mem_alloc_err;
1123 }
1124 memset(ep->qp.cq_virt, 0x00, ep->qp.cq_mem_size);
1125
1126 ep->qp.cq_first_qe = ep->qp.cq_virt;
1127 ep->qp.cq_prod_qe = ep->qp.cq_first_qe;
1128 ep->qp.cq_cons_qe = ep->qp.cq_first_qe;
1129 ep->qp.cq_last_qe = &ep->qp.cq_first_qe[hba->max_cqes - 1];
1130 ep->qp.cq_prod_idx = 0;
1131 ep->qp.cq_cons_idx = 0;
1132 ep->qp.cqe_left = hba->max_cqes;
1133 ep->qp.cqe_exp_seq_sn = ISCSI_INITIAL_SN;
1134 ep->qp.cqe_size = hba->max_cqes;
1135
1136 /* Invalidate all EQ CQE index, req only for 57710 */
1137 cq_db = (struct bnx2i_5771x_cq_db *) ep->qp.cq_pgtbl_virt;
1138 memset(cq_db->sqn, 0xFF, sizeof(cq_db->sqn[0]) * BNX2X_MAX_CQS);
1139
1140 /* Allocate page table memory for RQ which is page aligned */
1141 ep->qp.rq_mem_size = hba->max_rqes * BNX2I_RQ_WQE_SIZE;
1142 ep->qp.rq_mem_size =
1143 (ep->qp.rq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK;
1144 ep->qp.rq_pgtbl_size =
1145 (ep->qp.rq_mem_size / PAGE_SIZE) * sizeof(void *);
1146 ep->qp.rq_pgtbl_size =
1147 (ep->qp.rq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK;
1148
1149 ep->qp.rq_pgtbl_virt =
1150 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.rq_pgtbl_size,
1151 &ep->qp.rq_pgtbl_phys, GFP_KERNEL);
1152 if (!ep->qp.rq_pgtbl_virt) {
1153 printk(KERN_ALERT "bnx2i: unable to alloc RQ PT mem %d\n",
1154 ep->qp.rq_pgtbl_size);
1155 goto mem_alloc_err;
1156 }
1157
1158 /* Allocate memory area for actual RQ element */
1159 ep->qp.rq_virt =
1160 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.rq_mem_size,
1161 &ep->qp.rq_phys, GFP_KERNEL);
1162 if (!ep->qp.rq_virt) {
1163 printk(KERN_ALERT "bnx2i: unable to alloc RQ BD memory %d\n",
1164 ep->qp.rq_mem_size);
1165 goto mem_alloc_err;
1166 }
1167
1168 ep->qp.rq_first_qe = ep->qp.rq_virt;
1169 ep->qp.rq_prod_qe = ep->qp.rq_first_qe;
1170 ep->qp.rq_cons_qe = ep->qp.rq_first_qe;
1171 ep->qp.rq_last_qe = &ep->qp.rq_first_qe[hba->max_rqes - 1];
1172 ep->qp.rq_prod_idx = 0x8000;
1173 ep->qp.rq_cons_idx = 0;
1174 ep->qp.rqe_left = hba->max_rqes;
1175
1176 setup_qp_page_tables(ep);
1177
1178 return 0;
1179
1180 mem_alloc_err:
1181 bnx2i_free_qp_resc(hba, ep);
1182 return -ENOMEM;
1183 }
1184
1185
1186
1187 /**
1188 * bnx2i_free_qp_resc - free memory resources held by QP
1189 * @hba: adapter structure pointer
1190 * @ep: endpoint (transport indentifier) structure
1191 *
1192 * Free QP resources - SQ/RQ/CQ memory and page tables.
1193 */
1194 void bnx2i_free_qp_resc(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep)
1195 {
1196 if (ep->qp.ctx_base) {
1197 iounmap(ep->qp.ctx_base);
1198 ep->qp.ctx_base = NULL;
1199 }
1200 /* Free SQ mem */
1201 if (ep->qp.sq_pgtbl_virt) {
1202 dma_free_coherent(&hba->pcidev->dev, ep->qp.sq_pgtbl_size,
1203 ep->qp.sq_pgtbl_virt, ep->qp.sq_pgtbl_phys);
1204 ep->qp.sq_pgtbl_virt = NULL;
1205 ep->qp.sq_pgtbl_phys = 0;
1206 }
1207 if (ep->qp.sq_virt) {
1208 dma_free_coherent(&hba->pcidev->dev, ep->qp.sq_mem_size,
1209 ep->qp.sq_virt, ep->qp.sq_phys);
1210 ep->qp.sq_virt = NULL;
1211 ep->qp.sq_phys = 0;
1212 }
1213
1214 /* Free RQ mem */
1215 if (ep->qp.rq_pgtbl_virt) {
1216 dma_free_coherent(&hba->pcidev->dev, ep->qp.rq_pgtbl_size,
1217 ep->qp.rq_pgtbl_virt, ep->qp.rq_pgtbl_phys);
1218 ep->qp.rq_pgtbl_virt = NULL;
1219 ep->qp.rq_pgtbl_phys = 0;
1220 }
1221 if (ep->qp.rq_virt) {
1222 dma_free_coherent(&hba->pcidev->dev, ep->qp.rq_mem_size,
1223 ep->qp.rq_virt, ep->qp.rq_phys);
1224 ep->qp.rq_virt = NULL;
1225 ep->qp.rq_phys = 0;
1226 }
1227
1228 /* Free CQ mem */
1229 if (ep->qp.cq_pgtbl_virt) {
1230 dma_free_coherent(&hba->pcidev->dev, ep->qp.cq_pgtbl_size,
1231 ep->qp.cq_pgtbl_virt, ep->qp.cq_pgtbl_phys);
1232 ep->qp.cq_pgtbl_virt = NULL;
1233 ep->qp.cq_pgtbl_phys = 0;
1234 }
1235 if (ep->qp.cq_virt) {
1236 dma_free_coherent(&hba->pcidev->dev, ep->qp.cq_mem_size,
1237 ep->qp.cq_virt, ep->qp.cq_phys);
1238 ep->qp.cq_virt = NULL;
1239 ep->qp.cq_phys = 0;
1240 }
1241 }
1242
1243
1244 /**
1245 * bnx2i_send_fw_iscsi_init_msg - initiates initial handshake with iscsi f/w
1246 * @hba: adapter structure pointer
1247 *
1248 * Send down iscsi_init KWQEs which initiates the initial handshake with the f/w
1249 * This results in iSCSi support validation and on-chip context manager
1250 * initialization. Firmware completes this handshake with a CQE carrying
1251 * the result of iscsi support validation. Parameter carried by
1252 * iscsi init request determines the number of offloaded connection and
1253 * tolerance level for iscsi protocol violation this hba/chip can support
1254 */
1255 int bnx2i_send_fw_iscsi_init_msg(struct bnx2i_hba *hba)
1256 {
1257 struct kwqe *kwqe_arr[3];
1258 struct iscsi_kwqe_init1 iscsi_init;
1259 struct iscsi_kwqe_init2 iscsi_init2;
1260 int rc = 0;
1261 u64 mask64;
1262
1263 bnx2i_adjust_qp_size(hba);
1264
1265 iscsi_init.flags =
1266 ISCSI_PAGE_SIZE_4K << ISCSI_KWQE_INIT1_PAGE_SIZE_SHIFT;
1267 if (en_tcp_dack)
1268 iscsi_init.flags |= ISCSI_KWQE_INIT1_DELAYED_ACK_ENABLE;
1269 iscsi_init.reserved0 = 0;
1270 iscsi_init.num_cqs = 1;
1271 iscsi_init.hdr.op_code = ISCSI_KWQE_OPCODE_INIT1;
1272 iscsi_init.hdr.flags =
1273 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT);
1274
1275 iscsi_init.dummy_buffer_addr_lo = (u32) hba->dummy_buf_dma;
1276 iscsi_init.dummy_buffer_addr_hi =
1277 (u32) ((u64) hba->dummy_buf_dma >> 32);
1278
1279 hba->num_ccell = hba->max_sqes >> 1;
1280 hba->ctx_ccell_tasks =
1281 ((hba->num_ccell & 0xFFFF) | (hba->max_sqes << 16));
1282 iscsi_init.num_ccells_per_conn = hba->num_ccell;
1283 iscsi_init.num_tasks_per_conn = hba->max_sqes;
1284 iscsi_init.sq_wqes_per_page = PAGE_SIZE / BNX2I_SQ_WQE_SIZE;
1285 iscsi_init.sq_num_wqes = hba->max_sqes;
1286 iscsi_init.cq_log_wqes_per_page =
1287 (u8) bnx2i_power_of2(PAGE_SIZE / BNX2I_CQE_SIZE);
1288 iscsi_init.cq_num_wqes = hba->max_cqes;
1289 iscsi_init.cq_num_pages = (hba->max_cqes * BNX2I_CQE_SIZE +
1290 (PAGE_SIZE - 1)) / PAGE_SIZE;
1291 iscsi_init.sq_num_pages = (hba->max_sqes * BNX2I_SQ_WQE_SIZE +
1292 (PAGE_SIZE - 1)) / PAGE_SIZE;
1293 iscsi_init.rq_buffer_size = BNX2I_RQ_WQE_SIZE;
1294 iscsi_init.rq_num_wqes = hba->max_rqes;
1295
1296
1297 iscsi_init2.hdr.op_code = ISCSI_KWQE_OPCODE_INIT2;
1298 iscsi_init2.hdr.flags =
1299 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT);
1300 iscsi_init2.max_cq_sqn = hba->max_cqes * 2 + 1;
1301 mask64 = 0x0ULL;
1302 mask64 |= (
1303 /* CISCO MDS */
1304 (1UL <<
1305 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_NOT_RSRV) |
1306 /* HP MSA1510i */
1307 (1UL <<
1308 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_EXP_DATASN) |
1309 /* EMC */
1310 (1ULL << ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_LUN));
1311 if (error_mask1)
1312 iscsi_init2.error_bit_map[0] = error_mask1;
1313 else
1314 iscsi_init2.error_bit_map[0] = (u32) mask64;
1315
1316 if (error_mask2)
1317 iscsi_init2.error_bit_map[1] = error_mask2;
1318 else
1319 iscsi_init2.error_bit_map[1] = (u32) (mask64 >> 32);
1320
1321 iscsi_error_mask = mask64;
1322
1323 kwqe_arr[0] = (struct kwqe *) &iscsi_init;
1324 kwqe_arr[1] = (struct kwqe *) &iscsi_init2;
1325
1326 if (hba->cnic && hba->cnic->submit_kwqes)
1327 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 2);
1328 return rc;
1329 }
1330
1331
1332 /**
1333 * bnx2i_process_scsi_cmd_resp - this function handles scsi cmd completion.
1334 * @conn: iscsi connection
1335 * @cqe: pointer to newly DMA'ed CQE entry for processing
1336 *
1337 * process SCSI CMD Response CQE & complete the request to SCSI-ML
1338 */
1339 static int bnx2i_process_scsi_cmd_resp(struct iscsi_session *session,
1340 struct bnx2i_conn *bnx2i_conn,
1341 struct cqe *cqe)
1342 {
1343 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data;
1344 struct bnx2i_cmd_response *resp_cqe;
1345 struct bnx2i_cmd *bnx2i_cmd;
1346 struct iscsi_task *task;
1347 struct iscsi_cmd_rsp *hdr;
1348 u32 datalen = 0;
1349
1350 resp_cqe = (struct bnx2i_cmd_response *)cqe;
1351 spin_lock(&session->lock);
1352 task = iscsi_itt_to_task(conn,
1353 resp_cqe->itt & ISCSI_CMD_RESPONSE_INDEX);
1354 if (!task)
1355 goto fail;
1356
1357 bnx2i_cmd = task->dd_data;
1358
1359 if (bnx2i_cmd->req.op_attr & ISCSI_CMD_REQUEST_READ) {
1360 conn->datain_pdus_cnt +=
1361 resp_cqe->task_stat.read_stat.num_data_outs;
1362 conn->rxdata_octets +=
1363 bnx2i_cmd->req.total_data_transfer_length;
1364 } else {
1365 conn->dataout_pdus_cnt +=
1366 resp_cqe->task_stat.read_stat.num_data_outs;
1367 conn->r2t_pdus_cnt +=
1368 resp_cqe->task_stat.read_stat.num_r2ts;
1369 conn->txdata_octets +=
1370 bnx2i_cmd->req.total_data_transfer_length;
1371 }
1372 bnx2i_iscsi_unmap_sg_list(bnx2i_cmd);
1373
1374 hdr = (struct iscsi_cmd_rsp *)task->hdr;
1375 resp_cqe = (struct bnx2i_cmd_response *)cqe;
1376 hdr->opcode = resp_cqe->op_code;
1377 hdr->max_cmdsn = cpu_to_be32(resp_cqe->max_cmd_sn);
1378 hdr->exp_cmdsn = cpu_to_be32(resp_cqe->exp_cmd_sn);
1379 hdr->response = resp_cqe->response;
1380 hdr->cmd_status = resp_cqe->status;
1381 hdr->flags = resp_cqe->response_flags;
1382 hdr->residual_count = cpu_to_be32(resp_cqe->residual_count);
1383
1384 if (resp_cqe->op_code == ISCSI_OP_SCSI_DATA_IN)
1385 goto done;
1386
1387 if (resp_cqe->status == SAM_STAT_CHECK_CONDITION) {
1388 datalen = resp_cqe->data_length;
1389 if (datalen < 2)
1390 goto done;
1391
1392 if (datalen > BNX2I_RQ_WQE_SIZE) {
1393 iscsi_conn_printk(KERN_ERR, conn,
1394 "sense data len %d > RQ sz\n",
1395 datalen);
1396 datalen = BNX2I_RQ_WQE_SIZE;
1397 } else if (datalen > ISCSI_DEF_MAX_RECV_SEG_LEN) {
1398 iscsi_conn_printk(KERN_ERR, conn,
1399 "sense data len %d > conn data\n",
1400 datalen);
1401 datalen = ISCSI_DEF_MAX_RECV_SEG_LEN;
1402 }
1403
1404 bnx2i_get_rq_buf(bnx2i_cmd->conn, conn->data, datalen);
1405 bnx2i_put_rq_buf(bnx2i_cmd->conn, 1);
1406 }
1407
1408 done:
1409 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr,
1410 conn->data, datalen);
1411 fail:
1412 spin_unlock(&session->lock);
1413 return 0;
1414 }
1415
1416
1417 /**
1418 * bnx2i_process_login_resp - this function handles iscsi login response
1419 * @session: iscsi session pointer
1420 * @bnx2i_conn: iscsi connection pointer
1421 * @cqe: pointer to newly DMA'ed CQE entry for processing
1422 *
1423 * process Login Response CQE & complete it to open-iscsi user daemon
1424 */
1425 static int bnx2i_process_login_resp(struct iscsi_session *session,
1426 struct bnx2i_conn *bnx2i_conn,
1427 struct cqe *cqe)
1428 {
1429 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data;
1430 struct iscsi_task *task;
1431 struct bnx2i_login_response *login;
1432 struct iscsi_login_rsp *resp_hdr;
1433 int pld_len;
1434 int pad_len;
1435
1436 login = (struct bnx2i_login_response *) cqe;
1437 spin_lock(&session->lock);
1438 task = iscsi_itt_to_task(conn,
1439 login->itt & ISCSI_LOGIN_RESPONSE_INDEX);
1440 if (!task)
1441 goto done;
1442
1443 resp_hdr = (struct iscsi_login_rsp *) &bnx2i_conn->gen_pdu.resp_hdr;
1444 memset(resp_hdr, 0, sizeof(struct iscsi_hdr));
1445 resp_hdr->opcode = login->op_code;
1446 resp_hdr->flags = login->response_flags;
1447 resp_hdr->max_version = login->version_max;
1448 resp_hdr->active_version = login->version_active;
1449 resp_hdr->hlength = 0;
1450
1451 hton24(resp_hdr->dlength, login->data_length);
1452 memcpy(resp_hdr->isid, &login->isid_lo, 6);
1453 resp_hdr->tsih = cpu_to_be16(login->tsih);
1454 resp_hdr->itt = task->hdr->itt;
1455 resp_hdr->statsn = cpu_to_be32(login->stat_sn);
1456 resp_hdr->exp_cmdsn = cpu_to_be32(login->exp_cmd_sn);
1457 resp_hdr->max_cmdsn = cpu_to_be32(login->max_cmd_sn);
1458 resp_hdr->status_class = login->status_class;
1459 resp_hdr->status_detail = login->status_detail;
1460 pld_len = login->data_length;
1461 bnx2i_conn->gen_pdu.resp_wr_ptr =
1462 bnx2i_conn->gen_pdu.resp_buf + pld_len;
1463
1464 pad_len = 0;
1465 if (pld_len & 0x3)
1466 pad_len = 4 - (pld_len % 4);
1467
1468 if (pad_len) {
1469 int i = 0;
1470 for (i = 0; i < pad_len; i++) {
1471 bnx2i_conn->gen_pdu.resp_wr_ptr[0] = 0;
1472 bnx2i_conn->gen_pdu.resp_wr_ptr++;
1473 }
1474 }
1475
1476 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr,
1477 bnx2i_conn->gen_pdu.resp_buf,
1478 bnx2i_conn->gen_pdu.resp_wr_ptr - bnx2i_conn->gen_pdu.resp_buf);
1479 done:
1480 spin_unlock(&session->lock);
1481 return 0;
1482 }
1483
1484
1485 /**
1486 * bnx2i_process_text_resp - this function handles iscsi text response
1487 * @session: iscsi session pointer
1488 * @bnx2i_conn: iscsi connection pointer
1489 * @cqe: pointer to newly DMA'ed CQE entry for processing
1490 *
1491 * process iSCSI Text Response CQE& complete it to open-iscsi user daemon
1492 */
1493 static int bnx2i_process_text_resp(struct iscsi_session *session,
1494 struct bnx2i_conn *bnx2i_conn,
1495 struct cqe *cqe)
1496 {
1497 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data;
1498 struct iscsi_task *task;
1499 struct bnx2i_text_response *text;
1500 struct iscsi_text_rsp *resp_hdr;
1501 int pld_len;
1502 int pad_len;
1503
1504 text = (struct bnx2i_text_response *) cqe;
1505 spin_lock(&session->lock);
1506 task = iscsi_itt_to_task(conn, text->itt & ISCSI_LOGIN_RESPONSE_INDEX);
1507 if (!task)
1508 goto done;
1509
1510 resp_hdr = (struct iscsi_text_rsp *)&bnx2i_conn->gen_pdu.resp_hdr;
1511 memset(resp_hdr, 0, sizeof(struct iscsi_hdr));
1512 resp_hdr->opcode = text->op_code;
1513 resp_hdr->flags = text->response_flags;
1514 resp_hdr->hlength = 0;
1515
1516 hton24(resp_hdr->dlength, text->data_length);
1517 resp_hdr->itt = task->hdr->itt;
1518 resp_hdr->ttt = cpu_to_be32(text->ttt);
1519 resp_hdr->statsn = task->hdr->exp_statsn;
1520 resp_hdr->exp_cmdsn = cpu_to_be32(text->exp_cmd_sn);
1521 resp_hdr->max_cmdsn = cpu_to_be32(text->max_cmd_sn);
1522 pld_len = text->data_length;
1523 bnx2i_conn->gen_pdu.resp_wr_ptr = bnx2i_conn->gen_pdu.resp_buf +
1524 pld_len;
1525 pad_len = 0;
1526 if (pld_len & 0x3)
1527 pad_len = 4 - (pld_len % 4);
1528
1529 if (pad_len) {
1530 int i = 0;
1531 for (i = 0; i < pad_len; i++) {
1532 bnx2i_conn->gen_pdu.resp_wr_ptr[0] = 0;
1533 bnx2i_conn->gen_pdu.resp_wr_ptr++;
1534 }
1535 }
1536 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr,
1537 bnx2i_conn->gen_pdu.resp_buf,
1538 bnx2i_conn->gen_pdu.resp_wr_ptr -
1539 bnx2i_conn->gen_pdu.resp_buf);
1540 done:
1541 spin_unlock(&session->lock);
1542 return 0;
1543 }
1544
1545
1546 /**
1547 * bnx2i_process_tmf_resp - this function handles iscsi TMF response
1548 * @session: iscsi session pointer
1549 * @bnx2i_conn: iscsi connection pointer
1550 * @cqe: pointer to newly DMA'ed CQE entry for processing
1551 *
1552 * process iSCSI TMF Response CQE and wake up the driver eh thread.
1553 */
1554 static int bnx2i_process_tmf_resp(struct iscsi_session *session,
1555 struct bnx2i_conn *bnx2i_conn,
1556 struct cqe *cqe)
1557 {
1558 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data;
1559 struct iscsi_task *task;
1560 struct bnx2i_tmf_response *tmf_cqe;
1561 struct iscsi_tm_rsp *resp_hdr;
1562
1563 tmf_cqe = (struct bnx2i_tmf_response *)cqe;
1564 spin_lock(&session->lock);
1565 task = iscsi_itt_to_task(conn,
1566 tmf_cqe->itt & ISCSI_TMF_RESPONSE_INDEX);
1567 if (!task)
1568 goto done;
1569
1570 resp_hdr = (struct iscsi_tm_rsp *) &bnx2i_conn->gen_pdu.resp_hdr;
1571 memset(resp_hdr, 0, sizeof(struct iscsi_hdr));
1572 resp_hdr->opcode = tmf_cqe->op_code;
1573 resp_hdr->max_cmdsn = cpu_to_be32(tmf_cqe->max_cmd_sn);
1574 resp_hdr->exp_cmdsn = cpu_to_be32(tmf_cqe->exp_cmd_sn);
1575 resp_hdr->itt = task->hdr->itt;
1576 resp_hdr->response = tmf_cqe->response;
1577
1578 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0);
1579 done:
1580 spin_unlock(&session->lock);
1581 return 0;
1582 }
1583
1584 /**
1585 * bnx2i_process_logout_resp - this function handles iscsi logout response
1586 * @session: iscsi session pointer
1587 * @bnx2i_conn: iscsi connection pointer
1588 * @cqe: pointer to newly DMA'ed CQE entry for processing
1589 *
1590 * process iSCSI Logout Response CQE & make function call to
1591 * notify the user daemon.
1592 */
1593 static int bnx2i_process_logout_resp(struct iscsi_session *session,
1594 struct bnx2i_conn *bnx2i_conn,
1595 struct cqe *cqe)
1596 {
1597 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data;
1598 struct iscsi_task *task;
1599 struct bnx2i_logout_response *logout;
1600 struct iscsi_logout_rsp *resp_hdr;
1601
1602 logout = (struct bnx2i_logout_response *) cqe;
1603 spin_lock(&session->lock);
1604 task = iscsi_itt_to_task(conn,
1605 logout->itt & ISCSI_LOGOUT_RESPONSE_INDEX);
1606 if (!task)
1607 goto done;
1608
1609 resp_hdr = (struct iscsi_logout_rsp *) &bnx2i_conn->gen_pdu.resp_hdr;
1610 memset(resp_hdr, 0, sizeof(struct iscsi_hdr));
1611 resp_hdr->opcode = logout->op_code;
1612 resp_hdr->flags = logout->response;
1613 resp_hdr->hlength = 0;
1614
1615 resp_hdr->itt = task->hdr->itt;
1616 resp_hdr->statsn = task->hdr->exp_statsn;
1617 resp_hdr->exp_cmdsn = cpu_to_be32(logout->exp_cmd_sn);
1618 resp_hdr->max_cmdsn = cpu_to_be32(logout->max_cmd_sn);
1619
1620 resp_hdr->t2wait = cpu_to_be32(logout->time_to_wait);
1621 resp_hdr->t2retain = cpu_to_be32(logout->time_to_retain);
1622
1623 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0);
1624
1625 bnx2i_conn->ep->state = EP_STATE_LOGOUT_RESP_RCVD;
1626 done:
1627 spin_unlock(&session->lock);
1628 return 0;
1629 }
1630
1631 /**
1632 * bnx2i_process_nopin_local_cmpl - this function handles iscsi nopin CQE
1633 * @session: iscsi session pointer
1634 * @bnx2i_conn: iscsi connection pointer
1635 * @cqe: pointer to newly DMA'ed CQE entry for processing
1636 *
1637 * process iSCSI NOPIN local completion CQE, frees IIT and command structures
1638 */
1639 static void bnx2i_process_nopin_local_cmpl(struct iscsi_session *session,
1640 struct bnx2i_conn *bnx2i_conn,
1641 struct cqe *cqe)
1642 {
1643 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data;
1644 struct bnx2i_nop_in_msg *nop_in;
1645 struct iscsi_task *task;
1646
1647 nop_in = (struct bnx2i_nop_in_msg *)cqe;
1648 spin_lock(&session->lock);
1649 task = iscsi_itt_to_task(conn,
1650 nop_in->itt & ISCSI_NOP_IN_MSG_INDEX);
1651 if (task)
1652 __iscsi_put_task(task);
1653 spin_unlock(&session->lock);
1654 }
1655
1656 /**
1657 * bnx2i_unsol_pdu_adjust_rq - makes adjustments to RQ after unsol pdu is recvd
1658 * @conn: iscsi connection
1659 *
1660 * Firmware advances RQ producer index for every unsolicited PDU even if
1661 * payload data length is '0'. This function makes corresponding
1662 * adjustments on the driver side to match this f/w behavior
1663 */
1664 static void bnx2i_unsol_pdu_adjust_rq(struct bnx2i_conn *bnx2i_conn)
1665 {
1666 char dummy_rq_data[2];
1667 bnx2i_get_rq_buf(bnx2i_conn, dummy_rq_data, 1);
1668 bnx2i_put_rq_buf(bnx2i_conn, 1);
1669 }
1670
1671
1672 /**
1673 * bnx2i_process_nopin_mesg - this function handles iscsi nopin CQE
1674 * @session: iscsi session pointer
1675 * @bnx2i_conn: iscsi connection pointer
1676 * @cqe: pointer to newly DMA'ed CQE entry for processing
1677 *
1678 * process iSCSI target's proactive iSCSI NOPIN request
1679 */
1680 static int bnx2i_process_nopin_mesg(struct iscsi_session *session,
1681 struct bnx2i_conn *bnx2i_conn,
1682 struct cqe *cqe)
1683 {
1684 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data;
1685 struct iscsi_task *task;
1686 struct bnx2i_nop_in_msg *nop_in;
1687 struct iscsi_nopin *hdr;
1688 int tgt_async_nop = 0;
1689
1690 nop_in = (struct bnx2i_nop_in_msg *)cqe;
1691
1692 spin_lock(&session->lock);
1693 hdr = (struct iscsi_nopin *)&bnx2i_conn->gen_pdu.resp_hdr;
1694 memset(hdr, 0, sizeof(struct iscsi_hdr));
1695 hdr->opcode = nop_in->op_code;
1696 hdr->max_cmdsn = cpu_to_be32(nop_in->max_cmd_sn);
1697 hdr->exp_cmdsn = cpu_to_be32(nop_in->exp_cmd_sn);
1698 hdr->ttt = cpu_to_be32(nop_in->ttt);
1699
1700 if (nop_in->itt == (u16) RESERVED_ITT) {
1701 bnx2i_unsol_pdu_adjust_rq(bnx2i_conn);
1702 hdr->itt = RESERVED_ITT;
1703 tgt_async_nop = 1;
1704 goto done;
1705 }
1706
1707 /* this is a response to one of our nop-outs */
1708 task = iscsi_itt_to_task(conn,
1709 (itt_t) (nop_in->itt & ISCSI_NOP_IN_MSG_INDEX));
1710 if (task) {
1711 hdr->flags = ISCSI_FLAG_CMD_FINAL;
1712 hdr->itt = task->hdr->itt;
1713 hdr->ttt = cpu_to_be32(nop_in->ttt);
1714 memcpy(hdr->lun, nop_in->lun, 8);
1715 }
1716 done:
1717 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0);
1718 spin_unlock(&session->lock);
1719
1720 return tgt_async_nop;
1721 }
1722
1723
1724 /**
1725 * bnx2i_process_async_mesg - this function handles iscsi async message
1726 * @session: iscsi session pointer
1727 * @bnx2i_conn: iscsi connection pointer
1728 * @cqe: pointer to newly DMA'ed CQE entry for processing
1729 *
1730 * process iSCSI ASYNC Message
1731 */
1732 static void bnx2i_process_async_mesg(struct iscsi_session *session,
1733 struct bnx2i_conn *bnx2i_conn,
1734 struct cqe *cqe)
1735 {
1736 struct bnx2i_async_msg *async_cqe;
1737 struct iscsi_async *resp_hdr;
1738 u8 async_event;
1739
1740 bnx2i_unsol_pdu_adjust_rq(bnx2i_conn);
1741
1742 async_cqe = (struct bnx2i_async_msg *)cqe;
1743 async_event = async_cqe->async_event;
1744
1745 if (async_event == ISCSI_ASYNC_MSG_SCSI_EVENT) {
1746 iscsi_conn_printk(KERN_ALERT, bnx2i_conn->cls_conn->dd_data,
1747 "async: scsi events not supported\n");
1748 return;
1749 }
1750
1751 spin_lock(&session->lock);
1752 resp_hdr = (struct iscsi_async *) &bnx2i_conn->gen_pdu.resp_hdr;
1753 memset(resp_hdr, 0, sizeof(struct iscsi_hdr));
1754 resp_hdr->opcode = async_cqe->op_code;
1755 resp_hdr->flags = 0x80;
1756
1757 memcpy(resp_hdr->lun, async_cqe->lun, 8);
1758 resp_hdr->exp_cmdsn = cpu_to_be32(async_cqe->exp_cmd_sn);
1759 resp_hdr->max_cmdsn = cpu_to_be32(async_cqe->max_cmd_sn);
1760
1761 resp_hdr->async_event = async_cqe->async_event;
1762 resp_hdr->async_vcode = async_cqe->async_vcode;
1763
1764 resp_hdr->param1 = cpu_to_be16(async_cqe->param1);
1765 resp_hdr->param2 = cpu_to_be16(async_cqe->param2);
1766 resp_hdr->param3 = cpu_to_be16(async_cqe->param3);
1767
1768 __iscsi_complete_pdu(bnx2i_conn->cls_conn->dd_data,
1769 (struct iscsi_hdr *)resp_hdr, NULL, 0);
1770 spin_unlock(&session->lock);
1771 }
1772
1773
1774 /**
1775 * bnx2i_process_reject_mesg - process iscsi reject pdu
1776 * @session: iscsi session pointer
1777 * @bnx2i_conn: iscsi connection pointer
1778 * @cqe: pointer to newly DMA'ed CQE entry for processing
1779 *
1780 * process iSCSI REJECT message
1781 */
1782 static void bnx2i_process_reject_mesg(struct iscsi_session *session,
1783 struct bnx2i_conn *bnx2i_conn,
1784 struct cqe *cqe)
1785 {
1786 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data;
1787 struct bnx2i_reject_msg *reject;
1788 struct iscsi_reject *hdr;
1789
1790 reject = (struct bnx2i_reject_msg *) cqe;
1791 if (reject->data_length) {
1792 bnx2i_get_rq_buf(bnx2i_conn, conn->data, reject->data_length);
1793 bnx2i_put_rq_buf(bnx2i_conn, 1);
1794 } else
1795 bnx2i_unsol_pdu_adjust_rq(bnx2i_conn);
1796
1797 spin_lock(&session->lock);
1798 hdr = (struct iscsi_reject *) &bnx2i_conn->gen_pdu.resp_hdr;
1799 memset(hdr, 0, sizeof(struct iscsi_hdr));
1800 hdr->opcode = reject->op_code;
1801 hdr->reason = reject->reason;
1802 hton24(hdr->dlength, reject->data_length);
1803 hdr->max_cmdsn = cpu_to_be32(reject->max_cmd_sn);
1804 hdr->exp_cmdsn = cpu_to_be32(reject->exp_cmd_sn);
1805 hdr->ffffffff = cpu_to_be32(RESERVED_ITT);
1806 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, conn->data,
1807 reject->data_length);
1808 spin_unlock(&session->lock);
1809 }
1810
1811 /**
1812 * bnx2i_process_cmd_cleanup_resp - process scsi command clean-up completion
1813 * @session: iscsi session pointer
1814 * @bnx2i_conn: iscsi connection pointer
1815 * @cqe: pointer to newly DMA'ed CQE entry for processing
1816 *
1817 * process command cleanup response CQE during conn shutdown or error recovery
1818 */
1819 static void bnx2i_process_cmd_cleanup_resp(struct iscsi_session *session,
1820 struct bnx2i_conn *bnx2i_conn,
1821 struct cqe *cqe)
1822 {
1823 struct bnx2i_cleanup_response *cmd_clean_rsp;
1824 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data;
1825 struct iscsi_task *task;
1826
1827 cmd_clean_rsp = (struct bnx2i_cleanup_response *)cqe;
1828 spin_lock(&session->lock);
1829 task = iscsi_itt_to_task(conn,
1830 cmd_clean_rsp->itt & ISCSI_CLEANUP_RESPONSE_INDEX);
1831 if (!task)
1832 printk(KERN_ALERT "bnx2i: cmd clean ITT %x not active\n",
1833 cmd_clean_rsp->itt & ISCSI_CLEANUP_RESPONSE_INDEX);
1834 spin_unlock(&session->lock);
1835 complete(&bnx2i_conn->cmd_cleanup_cmpl);
1836 }
1837
1838
1839
1840 /**
1841 * bnx2i_process_new_cqes - process newly DMA'ed CQE's
1842 * @bnx2i_conn: iscsi connection
1843 *
1844 * this function is called by generic KCQ handler to process all pending CQE's
1845 */
1846 static void bnx2i_process_new_cqes(struct bnx2i_conn *bnx2i_conn)
1847 {
1848 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data;
1849 struct iscsi_session *session = conn->session;
1850 struct qp_info *qp = &bnx2i_conn->ep->qp;
1851 struct bnx2i_nop_in_msg *nopin;
1852 int tgt_async_msg;
1853
1854 while (1) {
1855 nopin = (struct bnx2i_nop_in_msg *) qp->cq_cons_qe;
1856 if (nopin->cq_req_sn != qp->cqe_exp_seq_sn)
1857 break;
1858
1859 if (unlikely(test_bit(ISCSI_SUSPEND_BIT, &conn->suspend_rx))) {
1860 if (nopin->op_code == ISCSI_OP_NOOP_IN &&
1861 nopin->itt == (u16) RESERVED_ITT) {
1862 printk(KERN_ALERT "bnx2i: Unsolicited "
1863 "NOP-In detected for suspended "
1864 "connection dev=%s!\n",
1865 bnx2i_conn->hba->netdev->name);
1866 bnx2i_unsol_pdu_adjust_rq(bnx2i_conn);
1867 goto cqe_out;
1868 }
1869 break;
1870 }
1871 tgt_async_msg = 0;
1872
1873 switch (nopin->op_code) {
1874 case ISCSI_OP_SCSI_CMD_RSP:
1875 case ISCSI_OP_SCSI_DATA_IN:
1876 bnx2i_process_scsi_cmd_resp(session, bnx2i_conn,
1877 qp->cq_cons_qe);
1878 break;
1879 case ISCSI_OP_LOGIN_RSP:
1880 bnx2i_process_login_resp(session, bnx2i_conn,
1881 qp->cq_cons_qe);
1882 break;
1883 case ISCSI_OP_SCSI_TMFUNC_RSP:
1884 bnx2i_process_tmf_resp(session, bnx2i_conn,
1885 qp->cq_cons_qe);
1886 break;
1887 case ISCSI_OP_TEXT_RSP:
1888 bnx2i_process_text_resp(session, bnx2i_conn,
1889 qp->cq_cons_qe);
1890 break;
1891 case ISCSI_OP_LOGOUT_RSP:
1892 bnx2i_process_logout_resp(session, bnx2i_conn,
1893 qp->cq_cons_qe);
1894 break;
1895 case ISCSI_OP_NOOP_IN:
1896 if (bnx2i_process_nopin_mesg(session, bnx2i_conn,
1897 qp->cq_cons_qe))
1898 tgt_async_msg = 1;
1899 break;
1900 case ISCSI_OPCODE_NOPOUT_LOCAL_COMPLETION:
1901 bnx2i_process_nopin_local_cmpl(session, bnx2i_conn,
1902 qp->cq_cons_qe);
1903 break;
1904 case ISCSI_OP_ASYNC_EVENT:
1905 bnx2i_process_async_mesg(session, bnx2i_conn,
1906 qp->cq_cons_qe);
1907 tgt_async_msg = 1;
1908 break;
1909 case ISCSI_OP_REJECT:
1910 bnx2i_process_reject_mesg(session, bnx2i_conn,
1911 qp->cq_cons_qe);
1912 break;
1913 case ISCSI_OPCODE_CLEANUP_RESPONSE:
1914 bnx2i_process_cmd_cleanup_resp(session, bnx2i_conn,
1915 qp->cq_cons_qe);
1916 break;
1917 default:
1918 printk(KERN_ALERT "bnx2i: unknown opcode 0x%x\n",
1919 nopin->op_code);
1920 }
1921 if (!tgt_async_msg)
1922 bnx2i_conn->ep->num_active_cmds--;
1923 cqe_out:
1924 /* clear out in production version only, till beta keep opcode
1925 * field intact, will be helpful in debugging (context dump)
1926 * nopin->op_code = 0;
1927 */
1928 qp->cqe_exp_seq_sn++;
1929 if (qp->cqe_exp_seq_sn == (qp->cqe_size * 2 + 1))
1930 qp->cqe_exp_seq_sn = ISCSI_INITIAL_SN;
1931
1932 if (qp->cq_cons_qe == qp->cq_last_qe) {
1933 qp->cq_cons_qe = qp->cq_first_qe;
1934 qp->cq_cons_idx = 0;
1935 } else {
1936 qp->cq_cons_qe++;
1937 qp->cq_cons_idx++;
1938 }
1939 }
1940 }
1941
1942 /**
1943 * bnx2i_fastpath_notification - process global event queue (KCQ)
1944 * @hba: adapter structure pointer
1945 * @new_cqe_kcqe: pointer to newly DMA'ed KCQE entry
1946 *
1947 * Fast path event notification handler, KCQ entry carries context id
1948 * of the connection that has 1 or more pending CQ entries
1949 */
1950 static void bnx2i_fastpath_notification(struct bnx2i_hba *hba,
1951 struct iscsi_kcqe *new_cqe_kcqe)
1952 {
1953 struct bnx2i_conn *bnx2i_conn;
1954 u32 iscsi_cid;
1955
1956 iscsi_cid = new_cqe_kcqe->iscsi_conn_id;
1957 bnx2i_conn = bnx2i_get_conn_from_id(hba, iscsi_cid);
1958
1959 if (!bnx2i_conn) {
1960 printk(KERN_ALERT "cid #%x not valid\n", iscsi_cid);
1961 return;
1962 }
1963 if (!bnx2i_conn->ep) {
1964 printk(KERN_ALERT "cid #%x - ep not bound\n", iscsi_cid);
1965 return;
1966 }
1967 bnx2i_process_new_cqes(bnx2i_conn);
1968 bnx2i_arm_cq_event_coalescing(bnx2i_conn->ep, CNIC_ARM_CQE_FP);
1969 bnx2i_process_new_cqes(bnx2i_conn);
1970 }
1971
1972
1973 /**
1974 * bnx2i_process_update_conn_cmpl - process iscsi conn update completion KCQE
1975 * @hba: adapter structure pointer
1976 * @update_kcqe: kcqe pointer
1977 *
1978 * CONN_UPDATE completion handler, this completes iSCSI connection FFP migration
1979 */
1980 static void bnx2i_process_update_conn_cmpl(struct bnx2i_hba *hba,
1981 struct iscsi_kcqe *update_kcqe)
1982 {
1983 struct bnx2i_conn *conn;
1984 u32 iscsi_cid;
1985
1986 iscsi_cid = update_kcqe->iscsi_conn_id;
1987 conn = bnx2i_get_conn_from_id(hba, iscsi_cid);
1988
1989 if (!conn) {
1990 printk(KERN_ALERT "conn_update: cid %x not valid\n", iscsi_cid);
1991 return;
1992 }
1993 if (!conn->ep) {
1994 printk(KERN_ALERT "cid %x does not have ep bound\n", iscsi_cid);
1995 return;
1996 }
1997
1998 if (update_kcqe->completion_status) {
1999 printk(KERN_ALERT "request failed cid %x\n", iscsi_cid);
2000 conn->ep->state = EP_STATE_ULP_UPDATE_FAILED;
2001 } else
2002 conn->ep->state = EP_STATE_ULP_UPDATE_COMPL;
2003
2004 wake_up_interruptible(&conn->ep->ofld_wait);
2005 }
2006
2007
2008 /**
2009 * bnx2i_recovery_que_add_conn - add connection to recovery queue
2010 * @hba: adapter structure pointer
2011 * @bnx2i_conn: iscsi connection
2012 *
2013 * Add connection to recovery queue and schedule adapter eh worker
2014 */
2015 static void bnx2i_recovery_que_add_conn(struct bnx2i_hba *hba,
2016 struct bnx2i_conn *bnx2i_conn)
2017 {
2018 iscsi_conn_failure(bnx2i_conn->cls_conn->dd_data,
2019 ISCSI_ERR_CONN_FAILED);
2020 }
2021
2022
2023 /**
2024 * bnx2i_process_tcp_error - process error notification on a given connection
2025 *
2026 * @hba: adapter structure pointer
2027 * @tcp_err: tcp error kcqe pointer
2028 *
2029 * handles tcp level error notifications from FW.
2030 */
2031 static void bnx2i_process_tcp_error(struct bnx2i_hba *hba,
2032 struct iscsi_kcqe *tcp_err)
2033 {
2034 struct bnx2i_conn *bnx2i_conn;
2035 u32 iscsi_cid;
2036
2037 iscsi_cid = tcp_err->iscsi_conn_id;
2038 bnx2i_conn = bnx2i_get_conn_from_id(hba, iscsi_cid);
2039
2040 if (!bnx2i_conn) {
2041 printk(KERN_ALERT "bnx2i - cid 0x%x not valid\n", iscsi_cid);
2042 return;
2043 }
2044
2045 printk(KERN_ALERT "bnx2i - cid 0x%x had TCP errors, error code 0x%x\n",
2046 iscsi_cid, tcp_err->completion_status);
2047 bnx2i_recovery_que_add_conn(bnx2i_conn->hba, bnx2i_conn);
2048 }
2049
2050
2051 /**
2052 * bnx2i_process_iscsi_error - process error notification on a given connection
2053 * @hba: adapter structure pointer
2054 * @iscsi_err: iscsi error kcqe pointer
2055 *
2056 * handles iscsi error notifications from the FW. Firmware based in initial
2057 * handshake classifies iscsi protocol / TCP rfc violation into either
2058 * warning or error indications. If indication is of "Error" type, driver
2059 * will initiate session recovery for that connection/session. For
2060 * "Warning" type indication, driver will put out a system log message
2061 * (there will be only one message for each type for the life of the
2062 * session, this is to avoid un-necessarily overloading the system)
2063 */
2064 static void bnx2i_process_iscsi_error(struct bnx2i_hba *hba,
2065 struct iscsi_kcqe *iscsi_err)
2066 {
2067 struct bnx2i_conn *bnx2i_conn;
2068 u32 iscsi_cid;
2069 char warn_notice[] = "iscsi_warning";
2070 char error_notice[] = "iscsi_error";
2071 char additional_notice[64];
2072 char *message;
2073 int need_recovery;
2074 u64 err_mask64;
2075
2076 iscsi_cid = iscsi_err->iscsi_conn_id;
2077 bnx2i_conn = bnx2i_get_conn_from_id(hba, iscsi_cid);
2078 if (!bnx2i_conn) {
2079 printk(KERN_ALERT "bnx2i - cid 0x%x not valid\n", iscsi_cid);
2080 return;
2081 }
2082
2083 err_mask64 = (0x1ULL << iscsi_err->completion_status);
2084
2085 if (err_mask64 & iscsi_error_mask) {
2086 need_recovery = 0;
2087 message = warn_notice;
2088 } else {
2089 need_recovery = 1;
2090 message = error_notice;
2091 }
2092
2093 switch (iscsi_err->completion_status) {
2094 case ISCSI_KCQE_COMPLETION_STATUS_HDR_DIG_ERR:
2095 strcpy(additional_notice, "hdr digest err");
2096 break;
2097 case ISCSI_KCQE_COMPLETION_STATUS_DATA_DIG_ERR:
2098 strcpy(additional_notice, "data digest err");
2099 break;
2100 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_OPCODE:
2101 strcpy(additional_notice, "wrong opcode rcvd");
2102 break;
2103 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_AHS_LEN:
2104 strcpy(additional_notice, "AHS len > 0 rcvd");
2105 break;
2106 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_ITT:
2107 strcpy(additional_notice, "invalid ITT rcvd");
2108 break;
2109 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_STATSN:
2110 strcpy(additional_notice, "wrong StatSN rcvd");
2111 break;
2112 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_EXP_DATASN:
2113 strcpy(additional_notice, "wrong DataSN rcvd");
2114 break;
2115 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T:
2116 strcpy(additional_notice, "pend R2T violation");
2117 break;
2118 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_0:
2119 strcpy(additional_notice, "ERL0, UO");
2120 break;
2121 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_1:
2122 strcpy(additional_notice, "ERL0, U1");
2123 break;
2124 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_2:
2125 strcpy(additional_notice, "ERL0, U2");
2126 break;
2127 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_3:
2128 strcpy(additional_notice, "ERL0, U3");
2129 break;
2130 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_4:
2131 strcpy(additional_notice, "ERL0, U4");
2132 break;
2133 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_5:
2134 strcpy(additional_notice, "ERL0, U5");
2135 break;
2136 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_6:
2137 strcpy(additional_notice, "ERL0, U6");
2138 break;
2139 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REMAIN_RCV_LEN:
2140 strcpy(additional_notice, "invalid resi len");
2141 break;
2142 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_MAX_RCV_PDU_LEN:
2143 strcpy(additional_notice, "MRDSL violation");
2144 break;
2145 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_F_BIT_ZERO:
2146 strcpy(additional_notice, "F-bit not set");
2147 break;
2148 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_NOT_RSRV:
2149 strcpy(additional_notice, "invalid TTT");
2150 break;
2151 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DATASN:
2152 strcpy(additional_notice, "invalid DataSN");
2153 break;
2154 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REMAIN_BURST_LEN:
2155 strcpy(additional_notice, "burst len violation");
2156 break;
2157 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_BUFFER_OFF:
2158 strcpy(additional_notice, "buf offset violation");
2159 break;
2160 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_LUN:
2161 strcpy(additional_notice, "invalid LUN field");
2162 break;
2163 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_R2TSN:
2164 strcpy(additional_notice, "invalid R2TSN field");
2165 break;
2166 #define BNX2I_ERR_DESIRED_DATA_TRNS_LEN_0 \
2167 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_0
2168 case BNX2I_ERR_DESIRED_DATA_TRNS_LEN_0:
2169 strcpy(additional_notice, "invalid cmd len1");
2170 break;
2171 #define BNX2I_ERR_DESIRED_DATA_TRNS_LEN_1 \
2172 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_1
2173 case BNX2I_ERR_DESIRED_DATA_TRNS_LEN_1:
2174 strcpy(additional_notice, "invalid cmd len2");
2175 break;
2176 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T_EXCEED:
2177 strcpy(additional_notice,
2178 "pend r2t exceeds MaxOutstandingR2T value");
2179 break;
2180 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_IS_RSRV:
2181 strcpy(additional_notice, "TTT is rsvd");
2182 break;
2183 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_MAX_BURST_LEN:
2184 strcpy(additional_notice, "MBL violation");
2185 break;
2186 #define BNX2I_ERR_DATA_SEG_LEN_NOT_ZERO \
2187 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DATA_SEG_LEN_NOT_ZERO
2188 case BNX2I_ERR_DATA_SEG_LEN_NOT_ZERO:
2189 strcpy(additional_notice, "data seg len != 0");
2190 break;
2191 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REJECT_PDU_LEN:
2192 strcpy(additional_notice, "reject pdu len error");
2193 break;
2194 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_ASYNC_PDU_LEN:
2195 strcpy(additional_notice, "async pdu len error");
2196 break;
2197 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_NOPIN_PDU_LEN:
2198 strcpy(additional_notice, "nopin pdu len error");
2199 break;
2200 #define BNX2_ERR_PEND_R2T_IN_CLEANUP \
2201 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T_IN_CLEANUP
2202 case BNX2_ERR_PEND_R2T_IN_CLEANUP:
2203 strcpy(additional_notice, "pend r2t in cleanup");
2204 break;
2205
2206 case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_IP_FRAGMENT:
2207 strcpy(additional_notice, "IP fragments rcvd");
2208 break;
2209 case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_IP_OPTIONS:
2210 strcpy(additional_notice, "IP options error");
2211 break;
2212 case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_URGENT_FLAG:
2213 strcpy(additional_notice, "urgent flag error");
2214 break;
2215 default:
2216 printk(KERN_ALERT "iscsi_err - unknown err %x\n",
2217 iscsi_err->completion_status);
2218 }
2219
2220 if (need_recovery) {
2221 iscsi_conn_printk(KERN_ALERT,
2222 bnx2i_conn->cls_conn->dd_data,
2223 "bnx2i: %s - %s\n",
2224 message, additional_notice);
2225
2226 iscsi_conn_printk(KERN_ALERT,
2227 bnx2i_conn->cls_conn->dd_data,
2228 "conn_err - hostno %d conn %p, "
2229 "iscsi_cid %x cid %x\n",
2230 bnx2i_conn->hba->shost->host_no,
2231 bnx2i_conn, bnx2i_conn->ep->ep_iscsi_cid,
2232 bnx2i_conn->ep->ep_cid);
2233 bnx2i_recovery_que_add_conn(bnx2i_conn->hba, bnx2i_conn);
2234 } else
2235 if (!test_and_set_bit(iscsi_err->completion_status,
2236 (void *) &bnx2i_conn->violation_notified))
2237 iscsi_conn_printk(KERN_ALERT,
2238 bnx2i_conn->cls_conn->dd_data,
2239 "bnx2i: %s - %s\n",
2240 message, additional_notice);
2241 }
2242
2243
2244 /**
2245 * bnx2i_process_conn_destroy_cmpl - process iscsi conn destroy completion
2246 * @hba: adapter structure pointer
2247 * @conn_destroy: conn destroy kcqe pointer
2248 *
2249 * handles connection destroy completion request.
2250 */
2251 static void bnx2i_process_conn_destroy_cmpl(struct bnx2i_hba *hba,
2252 struct iscsi_kcqe *conn_destroy)
2253 {
2254 struct bnx2i_endpoint *ep;
2255
2256 ep = bnx2i_find_ep_in_destroy_list(hba, conn_destroy->iscsi_conn_id);
2257 if (!ep) {
2258 printk(KERN_ALERT "bnx2i_conn_destroy_cmpl: no pending "
2259 "offload request, unexpected complection\n");
2260 return;
2261 }
2262
2263 if (hba != ep->hba) {
2264 printk(KERN_ALERT "conn destroy- error hba mis-match\n");
2265 return;
2266 }
2267
2268 if (conn_destroy->completion_status) {
2269 printk(KERN_ALERT "conn_destroy_cmpl: op failed\n");
2270 ep->state = EP_STATE_CLEANUP_FAILED;
2271 } else
2272 ep->state = EP_STATE_CLEANUP_CMPL;
2273 wake_up_interruptible(&ep->ofld_wait);
2274 }
2275
2276
2277 /**
2278 * bnx2i_process_ofld_cmpl - process initial iscsi conn offload completion
2279 * @hba: adapter structure pointer
2280 * @ofld_kcqe: conn offload kcqe pointer
2281 *
2282 * handles initial connection offload completion, ep_connect() thread is
2283 * woken-up to continue with LLP connect process
2284 */
2285 static void bnx2i_process_ofld_cmpl(struct bnx2i_hba *hba,
2286 struct iscsi_kcqe *ofld_kcqe)
2287 {
2288 u32 cid_addr;
2289 struct bnx2i_endpoint *ep;
2290 u32 cid_num;
2291
2292 ep = bnx2i_find_ep_in_ofld_list(hba, ofld_kcqe->iscsi_conn_id);
2293 if (!ep) {
2294 printk(KERN_ALERT "ofld_cmpl: no pend offload request\n");
2295 return;
2296 }
2297
2298 if (hba != ep->hba) {
2299 printk(KERN_ALERT "ofld_cmpl: error hba mis-match\n");
2300 return;
2301 }
2302
2303 if (ofld_kcqe->completion_status) {
2304 ep->state = EP_STATE_OFLD_FAILED;
2305 if (ofld_kcqe->completion_status ==
2306 ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE)
2307 printk(KERN_ALERT "bnx2i (%s): ofld1 cmpl - unable "
2308 "to allocate iSCSI context resources\n",
2309 hba->netdev->name);
2310 else if (ofld_kcqe->completion_status ==
2311 ISCSI_KCQE_COMPLETION_STATUS_INVALID_OPCODE)
2312 printk(KERN_ALERT "bnx2i (%s): ofld1 cmpl - invalid "
2313 "opcode\n", hba->netdev->name);
2314 else if (ofld_kcqe->completion_status ==
2315 ISCSI_KCQE_COMPLETION_STATUS_CID_BUSY)
2316 /* error status code valid only for 5771x chipset */
2317 ep->state = EP_STATE_OFLD_FAILED_CID_BUSY;
2318 else
2319 printk(KERN_ALERT "bnx2i (%s): ofld1 cmpl - invalid "
2320 "error code %d\n", hba->netdev->name,
2321 ofld_kcqe->completion_status);
2322 } else {
2323 ep->state = EP_STATE_OFLD_COMPL;
2324 cid_addr = ofld_kcqe->iscsi_conn_context_id;
2325 cid_num = bnx2i_get_cid_num(ep);
2326 ep->ep_cid = cid_addr;
2327 ep->qp.ctx_base = NULL;
2328 }
2329 wake_up_interruptible(&ep->ofld_wait);
2330 }
2331
2332 /**
2333 * bnx2i_indicate_kcqe - process iscsi conn update completion KCQE
2334 * @hba: adapter structure pointer
2335 * @update_kcqe: kcqe pointer
2336 *
2337 * Generic KCQ event handler/dispatcher
2338 */
2339 static void bnx2i_indicate_kcqe(void *context, struct kcqe *kcqe[],
2340 u32 num_cqe)
2341 {
2342 struct bnx2i_hba *hba = context;
2343 int i = 0;
2344 struct iscsi_kcqe *ikcqe = NULL;
2345
2346 while (i < num_cqe) {
2347 ikcqe = (struct iscsi_kcqe *) kcqe[i++];
2348
2349 if (ikcqe->op_code ==
2350 ISCSI_KCQE_OPCODE_CQ_EVENT_NOTIFICATION)
2351 bnx2i_fastpath_notification(hba, ikcqe);
2352 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_OFFLOAD_CONN)
2353 bnx2i_process_ofld_cmpl(hba, ikcqe);
2354 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_UPDATE_CONN)
2355 bnx2i_process_update_conn_cmpl(hba, ikcqe);
2356 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_INIT) {
2357 if (ikcqe->completion_status !=
2358 ISCSI_KCQE_COMPLETION_STATUS_SUCCESS)
2359 bnx2i_iscsi_license_error(hba, ikcqe->\
2360 completion_status);
2361 else {
2362 set_bit(ADAPTER_STATE_UP, &hba->adapter_state);
2363 bnx2i_get_link_state(hba);
2364 printk(KERN_INFO "bnx2i [%.2x:%.2x.%.2x]: "
2365 "ISCSI_INIT passed\n",
2366 (u8)hba->pcidev->bus->number,
2367 hba->pci_devno,
2368 (u8)hba->pci_func);
2369
2370
2371 }
2372 } else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_DESTROY_CONN)
2373 bnx2i_process_conn_destroy_cmpl(hba, ikcqe);
2374 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_ISCSI_ERROR)
2375 bnx2i_process_iscsi_error(hba, ikcqe);
2376 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_TCP_ERROR)
2377 bnx2i_process_tcp_error(hba, ikcqe);
2378 else
2379 printk(KERN_ALERT "bnx2i: unknown opcode 0x%x\n",
2380 ikcqe->op_code);
2381 }
2382 }
2383
2384
2385 /**
2386 * bnx2i_indicate_netevent - Generic netdev event handler
2387 * @context: adapter structure pointer
2388 * @event: event type
2389 *
2390 * Handles four netdev events, NETDEV_UP, NETDEV_DOWN,
2391 * NETDEV_GOING_DOWN and NETDEV_CHANGE
2392 */
2393 static void bnx2i_indicate_netevent(void *context, unsigned long event)
2394 {
2395 struct bnx2i_hba *hba = context;
2396
2397 switch (event) {
2398 case NETDEV_UP:
2399 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state))
2400 bnx2i_send_fw_iscsi_init_msg(hba);
2401 break;
2402 case NETDEV_DOWN:
2403 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
2404 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
2405 break;
2406 case NETDEV_GOING_DOWN:
2407 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
2408 iscsi_host_for_each_session(hba->shost,
2409 bnx2i_drop_session);
2410 break;
2411 case NETDEV_CHANGE:
2412 bnx2i_get_link_state(hba);
2413 break;
2414 default:
2415 ;
2416 }
2417 }
2418
2419
2420 /**
2421 * bnx2i_cm_connect_cmpl - process iscsi conn establishment completion
2422 * @cm_sk: cnic sock structure pointer
2423 *
2424 * function callback exported via bnx2i - cnic driver interface to
2425 * indicate completion of option-2 TCP connect request.
2426 */
2427 static void bnx2i_cm_connect_cmpl(struct cnic_sock *cm_sk)
2428 {
2429 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context;
2430
2431 if (test_bit(ADAPTER_STATE_GOING_DOWN, &ep->hba->adapter_state))
2432 ep->state = EP_STATE_CONNECT_FAILED;
2433 else if (test_bit(SK_F_OFFLD_COMPLETE, &cm_sk->flags))
2434 ep->state = EP_STATE_CONNECT_COMPL;
2435 else
2436 ep->state = EP_STATE_CONNECT_FAILED;
2437
2438 wake_up_interruptible(&ep->ofld_wait);
2439 }
2440
2441
2442 /**
2443 * bnx2i_cm_close_cmpl - process tcp conn close completion
2444 * @cm_sk: cnic sock structure pointer
2445 *
2446 * function callback exported via bnx2i - cnic driver interface to
2447 * indicate completion of option-2 graceful TCP connect shutdown
2448 */
2449 static void bnx2i_cm_close_cmpl(struct cnic_sock *cm_sk)
2450 {
2451 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context;
2452
2453 ep->state = EP_STATE_DISCONN_COMPL;
2454 wake_up_interruptible(&ep->ofld_wait);
2455 }
2456
2457
2458 /**
2459 * bnx2i_cm_abort_cmpl - process abortive tcp conn teardown completion
2460 * @cm_sk: cnic sock structure pointer
2461 *
2462 * function callback exported via bnx2i - cnic driver interface to
2463 * indicate completion of option-2 abortive TCP connect termination
2464 */
2465 static void bnx2i_cm_abort_cmpl(struct cnic_sock *cm_sk)
2466 {
2467 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context;
2468
2469 ep->state = EP_STATE_DISCONN_COMPL;
2470 wake_up_interruptible(&ep->ofld_wait);
2471 }
2472
2473
2474 /**
2475 * bnx2i_cm_remote_close - process received TCP FIN
2476 * @hba: adapter structure pointer
2477 * @update_kcqe: kcqe pointer
2478 *
2479 * function callback exported via bnx2i - cnic driver interface to indicate
2480 * async TCP events such as FIN
2481 */
2482 static void bnx2i_cm_remote_close(struct cnic_sock *cm_sk)
2483 {
2484 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context;
2485
2486 ep->state = EP_STATE_TCP_FIN_RCVD;
2487 if (ep->conn)
2488 bnx2i_recovery_que_add_conn(ep->hba, ep->conn);
2489 }
2490
2491 /**
2492 * bnx2i_cm_remote_abort - process TCP RST and start conn cleanup
2493 * @hba: adapter structure pointer
2494 * @update_kcqe: kcqe pointer
2495 *
2496 * function callback exported via bnx2i - cnic driver interface to
2497 * indicate async TCP events (RST) sent by the peer.
2498 */
2499 static void bnx2i_cm_remote_abort(struct cnic_sock *cm_sk)
2500 {
2501 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context;
2502 u32 old_state = ep->state;
2503
2504 ep->state = EP_STATE_TCP_RST_RCVD;
2505 if (old_state == EP_STATE_DISCONN_START)
2506 wake_up_interruptible(&ep->ofld_wait);
2507 else
2508 if (ep->conn)
2509 bnx2i_recovery_que_add_conn(ep->hba, ep->conn);
2510 }
2511
2512
2513 static int bnx2i_send_nl_mesg(void *context, u32 msg_type,
2514 char *buf, u16 buflen)
2515 {
2516 struct bnx2i_hba *hba = context;
2517 int rc;
2518
2519 if (!hba)
2520 return -ENODEV;
2521
2522 rc = iscsi_offload_mesg(hba->shost, &bnx2i_iscsi_transport,
2523 msg_type, buf, buflen);
2524 if (rc)
2525 printk(KERN_ALERT "bnx2i: private nl message send error\n");
2526
2527 return rc;
2528 }
2529
2530
2531 /**
2532 * bnx2i_cnic_cb - global template of bnx2i - cnic driver interface structure
2533 * carrying callback function pointers
2534 *
2535 */
2536 struct cnic_ulp_ops bnx2i_cnic_cb = {
2537 .cnic_init = bnx2i_ulp_init,
2538 .cnic_exit = bnx2i_ulp_exit,
2539 .cnic_start = bnx2i_start,
2540 .cnic_stop = bnx2i_stop,
2541 .indicate_kcqes = bnx2i_indicate_kcqe,
2542 .indicate_netevent = bnx2i_indicate_netevent,
2543 .cm_connect_complete = bnx2i_cm_connect_cmpl,
2544 .cm_close_complete = bnx2i_cm_close_cmpl,
2545 .cm_abort_complete = bnx2i_cm_abort_cmpl,
2546 .cm_remote_close = bnx2i_cm_remote_close,
2547 .cm_remote_abort = bnx2i_cm_remote_abort,
2548 .iscsi_nl_send_msg = bnx2i_send_nl_mesg,
2549 .owner = THIS_MODULE
2550 };
2551
2552
2553 /**
2554 * bnx2i_map_ep_dbell_regs - map connection doorbell registers
2555 * @ep: bnx2i endpoint
2556 *
2557 * maps connection's SQ and RQ doorbell registers, 5706/5708/5709 hosts these
2558 * register in BAR #0. Whereas in 57710 these register are accessed by
2559 * mapping BAR #1
2560 */
2561 int bnx2i_map_ep_dbell_regs(struct bnx2i_endpoint *ep)
2562 {
2563 u32 cid_num;
2564 u32 reg_off;
2565 u32 first_l4l5;
2566 u32 ctx_sz;
2567 u32 config2;
2568 resource_size_t reg_base;
2569
2570 cid_num = bnx2i_get_cid_num(ep);
2571
2572 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) {
2573 reg_base = pci_resource_start(ep->hba->pcidev,
2574 BNX2X_DOORBELL_PCI_BAR);
2575 reg_off = BNX2I_5771X_DBELL_PAGE_SIZE * (cid_num & 0x1FFFF) +
2576 DPM_TRIGER_TYPE;
2577 ep->qp.ctx_base = ioremap_nocache(reg_base + reg_off, 4);
2578 goto arm_cq;
2579 }
2580
2581 reg_base = ep->hba->netdev->base_addr;
2582 if ((test_bit(BNX2I_NX2_DEV_5709, &ep->hba->cnic_dev_type)) &&
2583 (ep->hba->mail_queue_access == BNX2I_MQ_BIN_MODE)) {
2584 config2 = REG_RD(ep->hba, BNX2_MQ_CONFIG2);
2585 first_l4l5 = config2 & BNX2_MQ_CONFIG2_FIRST_L4L5;
2586 ctx_sz = (config2 & BNX2_MQ_CONFIG2_CONT_SZ) >> 3;
2587 if (ctx_sz)
2588 reg_off = CTX_OFFSET + MAX_CID_CNT * MB_KERNEL_CTX_SIZE
2589 + BNX2I_570X_PAGE_SIZE_DEFAULT *
2590 (((cid_num - first_l4l5) / ctx_sz) + 256);
2591 else
2592 reg_off = CTX_OFFSET + (MB_KERNEL_CTX_SIZE * cid_num);
2593 } else
2594 /* 5709 device in normal node and 5706/5708 devices */
2595 reg_off = CTX_OFFSET + (MB_KERNEL_CTX_SIZE * cid_num);
2596
2597 ep->qp.ctx_base = ioremap_nocache(reg_base + reg_off,
2598 MB_KERNEL_CTX_SIZE);
2599 if (!ep->qp.ctx_base)
2600 return -ENOMEM;
2601
2602 arm_cq:
2603 bnx2i_arm_cq_event_coalescing(ep, CNIC_ARM_CQE);
2604 return 0;
2605 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree