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GUI: Fix Tomato RAF theme for all builds. Compilation typo.
[tomato.git] / release / src-rt-6.x.4708 / linux / linux-2.6.36 / drivers / scsi / bnx2i / bnx2i_hwi.c
blobd23fc256d585e9629f32c52aaebef8de3eb5a345
1 /* bnx2i_hwi.c: Broadcom NetXtreme II iSCSI driver.
2 *
3 * Copyright (c) 2006 - 2009 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 */
13
14 #include <linux/gfp.h>
15 #include <scsi/scsi_tcq.h>
16 #include <scsi/libiscsi.h>
17 #include "bnx2i.h"
18
19 /**
20 * bnx2i_get_cid_num - get cid from ep
21 * @ep: endpoint pointer
22 *
23 * Only applicable to 57710 family of devices
24 */
25 static u32 bnx2i_get_cid_num(struct bnx2i_endpoint *ep)
26 {
27 u32 cid;
28
29 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type))
30 cid = ep->ep_cid;
31 else
32 cid = GET_CID_NUM(ep->ep_cid);
33 return cid;
34 }
35
36
37 /**
38 * bnx2i_adjust_qp_size - Adjust SQ/RQ/CQ size for 57710 device type
39 * @hba: Adapter for which adjustments is to be made
40 *
41 * Only applicable to 57710 family of devices
42 */
43 static void bnx2i_adjust_qp_size(struct bnx2i_hba *hba)
44 {
45 u32 num_elements_per_pg;
46
47 if (test_bit(BNX2I_NX2_DEV_5706, &hba->cnic_dev_type) ||
48 test_bit(BNX2I_NX2_DEV_5708, &hba->cnic_dev_type) ||
49 test_bit(BNX2I_NX2_DEV_5709, &hba->cnic_dev_type)) {
50 if (!is_power_of_2(hba->max_sqes))
51 hba->max_sqes = rounddown_pow_of_two(hba->max_sqes);
52
53 if (!is_power_of_2(hba->max_rqes))
54 hba->max_rqes = rounddown_pow_of_two(hba->max_rqes);
55 }
56
57 /* Adjust each queue size if the user selection does not
58 * yield integral num of page buffers
59 */
60 /* adjust SQ */
61 num_elements_per_pg = PAGE_SIZE / BNX2I_SQ_WQE_SIZE;
62 if (hba->max_sqes < num_elements_per_pg)
63 hba->max_sqes = num_elements_per_pg;
64 else if (hba->max_sqes % num_elements_per_pg)
65 hba->max_sqes = (hba->max_sqes + num_elements_per_pg - 1) &
66 ~(num_elements_per_pg - 1);
67
68 /* adjust CQ */
69 num_elements_per_pg = PAGE_SIZE / BNX2I_CQE_SIZE;
70 if (hba->max_cqes < num_elements_per_pg)
71 hba->max_cqes = num_elements_per_pg;
72 else if (hba->max_cqes % num_elements_per_pg)
73 hba->max_cqes = (hba->max_cqes + num_elements_per_pg - 1) &
74 ~(num_elements_per_pg - 1);
75
76 /* adjust RQ */
77 num_elements_per_pg = PAGE_SIZE / BNX2I_RQ_WQE_SIZE;
78 if (hba->max_rqes < num_elements_per_pg)
79 hba->max_rqes = num_elements_per_pg;
80 else if (hba->max_rqes % num_elements_per_pg)
81 hba->max_rqes = (hba->max_rqes + num_elements_per_pg - 1) &
82 ~(num_elements_per_pg - 1);
83 }
84
85
86 /**
87 * bnx2i_get_link_state - get network interface link state
88 * @hba: adapter instance pointer
89 *
90 * updates adapter structure flag based on netdev state
91 */
92 static void bnx2i_get_link_state(struct bnx2i_hba *hba)
93 {
94 if (test_bit(__LINK_STATE_NOCARRIER, &hba->netdev->state))
95 set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
96 else
97 clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
98 }
99
100
101 /**
102 * bnx2i_iscsi_license_error - displays iscsi license related error message
103 * @hba: adapter instance pointer
104 * @error_code: error classification
105 *
106 * Puts out an error log when driver is unable to offload iscsi connection
107 * due to license restrictions
108 */
109 static void bnx2i_iscsi_license_error(struct bnx2i_hba *hba, u32 error_code)
110 {
111 if (error_code == ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED)
112 /* iSCSI offload not supported on this device */
113 printk(KERN_ERR "bnx2i: iSCSI not supported, dev=%s\n",
114 hba->netdev->name);
115 if (error_code == ISCSI_KCQE_COMPLETION_STATUS_LOM_ISCSI_NOT_ENABLED)
116 /* iSCSI offload not supported on this LOM device */
117 printk(KERN_ERR "bnx2i: LOM is not enable to "
118 "offload iSCSI connections, dev=%s\n",
119 hba->netdev->name);
120 set_bit(ADAPTER_STATE_INIT_FAILED, &hba->adapter_state);
121 }
122
123
124 /**
125 * bnx2i_arm_cq_event_coalescing - arms CQ to enable EQ notification
126 * @ep: endpoint (transport indentifier) structure
127 * @action: action, ARM or DISARM. For now only ARM_CQE is used
128 *
129 * Arm'ing CQ will enable chip to generate global EQ events inorder to interrupt
130 * the driver. EQ event is generated CQ index is hit or at least 1 CQ is
131 * outstanding and on chip timer expires
132 */
133 void bnx2i_arm_cq_event_coalescing(struct bnx2i_endpoint *ep, u8 action)
134 {
135 struct bnx2i_5771x_cq_db *cq_db;
136 u16 cq_index;
137 u16 next_index;
138 u32 num_active_cmds;
139
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 if (cq_db->sqn[0] && cq_db->sqn[0] != 0xFFFF)
151 return;
152
153 if (action == CNIC_ARM_CQE) {
154 num_active_cmds = ep->num_active_cmds;
155 if (num_active_cmds <= event_coal_min)
156 next_index = 1;
157 else
158 next_index = event_coal_min +
159 (num_active_cmds - event_coal_min) / event_coal_div;
160 if (!next_index)
161 next_index = 1;
162 cq_index = ep->qp.cqe_exp_seq_sn + next_index - 1;
163 if (cq_index > ep->qp.cqe_size * 2)
164 cq_index -= ep->qp.cqe_size * 2;
165 if (!cq_index)
166 cq_index = 1;
167
168 cq_db->sqn[0] = cq_index;
169 }
170 }
171
172
173 /**
174 * bnx2i_get_rq_buf - copy RQ buffer contents to driver buffer
175 * @conn: iscsi connection on which RQ event occured
176 * @ptr: driver buffer to which RQ buffer contents is to
177 * be copied
178 * @len: length of valid data inside RQ buf
179 *
180 * Copies RQ buffer contents from shared (DMA'able) memory region to
181 * driver buffer. RQ is used to DMA unsolicitated iscsi pdu's and
182 * scsi sense info
183 */
184 void bnx2i_get_rq_buf(struct bnx2i_conn *bnx2i_conn, char *ptr, int len)
185 {
186 if (!bnx2i_conn->ep->qp.rqe_left)
187 return;
188
189 bnx2i_conn->ep->qp.rqe_left--;
190 memcpy(ptr, (u8 *) bnx2i_conn->ep->qp.rq_cons_qe, len);
191 if (bnx2i_conn->ep->qp.rq_cons_qe == bnx2i_conn->ep->qp.rq_last_qe) {
192 bnx2i_conn->ep->qp.rq_cons_qe = bnx2i_conn->ep->qp.rq_first_qe;
193 bnx2i_conn->ep->qp.rq_cons_idx = 0;
194 } else {
195 bnx2i_conn->ep->qp.rq_cons_qe++;
196 bnx2i_conn->ep->qp.rq_cons_idx++;
197 }
198 }
199
200
201 static void bnx2i_ring_577xx_doorbell(struct bnx2i_conn *conn)
202 {
203 struct bnx2i_5771x_dbell dbell;
204 u32 msg;
205
206 memset(&dbell, 0, sizeof(dbell));
207 dbell.dbell.header = (B577XX_ISCSI_CONNECTION_TYPE <<
208 B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT);
209 msg = *((u32 *)&dbell);
210 /* TODO : get doorbell register mapping */
211 writel(cpu_to_le32(msg), conn->ep->qp.ctx_base);
212 }
213
214
215 /**
216 * bnx2i_put_rq_buf - Replenish RQ buffer, if required ring on chip doorbell
217 * @conn: iscsi connection on which event to post
218 * @count: number of RQ buffer being posted to chip
219 *
220 * No need to ring hardware doorbell for 57710 family of devices
221 */
222 void bnx2i_put_rq_buf(struct bnx2i_conn *bnx2i_conn, int count)
223 {
224 struct bnx2i_5771x_sq_rq_db *rq_db;
225 u16 hi_bit = (bnx2i_conn->ep->qp.rq_prod_idx & 0x8000);
226 struct bnx2i_endpoint *ep = bnx2i_conn->ep;
227
228 ep->qp.rqe_left += count;
229 ep->qp.rq_prod_idx &= 0x7FFF;
230 ep->qp.rq_prod_idx += count;
231
232 if (ep->qp.rq_prod_idx > bnx2i_conn->hba->max_rqes) {
233 ep->qp.rq_prod_idx %= bnx2i_conn->hba->max_rqes;
234 if (!hi_bit)
235 ep->qp.rq_prod_idx |= 0x8000;
236 } else
237 ep->qp.rq_prod_idx |= hi_bit;
238
239 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) {
240 rq_db = (struct bnx2i_5771x_sq_rq_db *) ep->qp.rq_pgtbl_virt;
241 rq_db->prod_idx = ep->qp.rq_prod_idx;
242 /* no need to ring hardware doorbell for 57710 */
243 } else {
244 writew(ep->qp.rq_prod_idx,
245 ep->qp.ctx_base + CNIC_RECV_DOORBELL);
246 }
247 mmiowb();
248 }
249
250
251 /**
252 * bnx2i_ring_sq_dbell - Ring SQ doorbell to wake-up the processing engine
253 * @conn: iscsi connection to which new SQ entries belong
254 * @count: number of SQ WQEs to post
255 *
256 * SQ DB is updated in host memory and TX Doorbell is rung for 57710 family
257 * of devices. For 5706/5708/5709 new SQ WQE count is written into the
258 * doorbell register
259 */
260 static void bnx2i_ring_sq_dbell(struct bnx2i_conn *bnx2i_conn, int count)
261 {
262 struct bnx2i_5771x_sq_rq_db *sq_db;
263 struct bnx2i_endpoint *ep = bnx2i_conn->ep;
264
265 ep->num_active_cmds++;
266 wmb(); /* flush SQ WQE memory before the doorbell is rung */
267 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) {
268 sq_db = (struct bnx2i_5771x_sq_rq_db *) ep->qp.sq_pgtbl_virt;
269 sq_db->prod_idx = ep->qp.sq_prod_idx;
270 bnx2i_ring_577xx_doorbell(bnx2i_conn);
271 } else
272 writew(count, ep->qp.ctx_base + CNIC_SEND_DOORBELL);
273
274 mmiowb(); /* flush posted PCI writes */
275 }
276
277
278 /**
279 * bnx2i_ring_dbell_update_sq_params - update SQ driver parameters
280 * @conn: iscsi connection to which new SQ entries belong
281 * @count: number of SQ WQEs to post
282 *
283 * this routine will update SQ driver parameters and ring the doorbell
284 */
285 static void bnx2i_ring_dbell_update_sq_params(struct bnx2i_conn *bnx2i_conn,
286 int count)
287 {
288 int tmp_cnt;
289
290 if (count == 1) {
291 if (bnx2i_conn->ep->qp.sq_prod_qe ==
292 bnx2i_conn->ep->qp.sq_last_qe)
293 bnx2i_conn->ep->qp.sq_prod_qe =
294 bnx2i_conn->ep->qp.sq_first_qe;
295 else
296 bnx2i_conn->ep->qp.sq_prod_qe++;
297 } else {
298 if ((bnx2i_conn->ep->qp.sq_prod_qe + count) <=
299 bnx2i_conn->ep->qp.sq_last_qe)
300 bnx2i_conn->ep->qp.sq_prod_qe += count;
301 else {
302 tmp_cnt = bnx2i_conn->ep->qp.sq_last_qe -
303 bnx2i_conn->ep->qp.sq_prod_qe;
304 bnx2i_conn->ep->qp.sq_prod_qe =
305 &bnx2i_conn->ep->qp.sq_first_qe[count -
306 (tmp_cnt + 1)];
307 }
308 }
309 bnx2i_conn->ep->qp.sq_prod_idx += count;
310 /* Ring the doorbell */
311 bnx2i_ring_sq_dbell(bnx2i_conn, bnx2i_conn->ep->qp.sq_prod_idx);
312 }
313
314
315 /**
316 * bnx2i_send_iscsi_login - post iSCSI login request MP WQE to hardware
317 * @conn: iscsi connection
318 * @cmd: driver command structure which is requesting
319 * a WQE to sent to chip for further processing
320 *
321 * prepare and post an iSCSI Login request WQE to CNIC firmware
322 */
323 int bnx2i_send_iscsi_login(struct bnx2i_conn *bnx2i_conn,
324 struct iscsi_task *task)
325 {
326 struct bnx2i_cmd *bnx2i_cmd;
327 struct bnx2i_login_request *login_wqe;
328 struct iscsi_login *login_hdr;
329 u32 dword;
330
331 bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data;
332 login_hdr = (struct iscsi_login *)task->hdr;
333 login_wqe = (struct bnx2i_login_request *)
334 bnx2i_conn->ep->qp.sq_prod_qe;
335
336 login_wqe->op_code = login_hdr->opcode;
337 login_wqe->op_attr = login_hdr->flags;
338 login_wqe->version_max = login_hdr->max_version;
339 login_wqe->version_min = login_hdr->min_version;
340 login_wqe->data_length = ntoh24(login_hdr->dlength);
341 login_wqe->isid_lo = *((u32 *) login_hdr->isid);
342 login_wqe->isid_hi = *((u16 *) login_hdr->isid + 2);
343 login_wqe->tsih = login_hdr->tsih;
344 login_wqe->itt = task->itt |
345 (ISCSI_TASK_TYPE_MPATH << ISCSI_LOGIN_REQUEST_TYPE_SHIFT);
346 login_wqe->cid = login_hdr->cid;
347
348 login_wqe->cmd_sn = be32_to_cpu(login_hdr->cmdsn);
349 login_wqe->exp_stat_sn = be32_to_cpu(login_hdr->exp_statsn);
350 login_wqe->flags = ISCSI_LOGIN_REQUEST_UPDATE_EXP_STAT_SN;
351
352 login_wqe->resp_bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.resp_bd_dma;
353 login_wqe->resp_bd_list_addr_hi =
354 (u32) ((u64) bnx2i_conn->gen_pdu.resp_bd_dma >> 32);
355
356 dword = ((1 << ISCSI_LOGIN_REQUEST_NUM_RESP_BDS_SHIFT) |
357 (bnx2i_conn->gen_pdu.resp_buf_size <<
358 ISCSI_LOGIN_REQUEST_RESP_BUFFER_LENGTH_SHIFT));
359 login_wqe->resp_buffer = dword;
360 login_wqe->bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.req_bd_dma;
361 login_wqe->bd_list_addr_hi =
362 (u32) ((u64) bnx2i_conn->gen_pdu.req_bd_dma >> 32);
363 login_wqe->num_bds = 1;
364 login_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */
365
366 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1);
367 return 0;
368 }
369
370 /**
371 * bnx2i_send_iscsi_tmf - post iSCSI task management request MP WQE to hardware
372 * @conn: iscsi connection
373 * @mtask: driver command structure which is requesting
374 * a WQE to sent to chip for further processing
375 *
376 * prepare and post an iSCSI Login request WQE to CNIC firmware
377 */
378 int bnx2i_send_iscsi_tmf(struct bnx2i_conn *bnx2i_conn,
379 struct iscsi_task *mtask)
380 {
381 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data;
382 struct iscsi_tm *tmfabort_hdr;
383 struct scsi_cmnd *ref_sc;
384 struct iscsi_task *ctask;
385 struct bnx2i_cmd *bnx2i_cmd;
386 struct bnx2i_tmf_request *tmfabort_wqe;
387 u32 dword;
388 u32 scsi_lun[2];
389
390 bnx2i_cmd = (struct bnx2i_cmd *)mtask->dd_data;
391 tmfabort_hdr = (struct iscsi_tm *)mtask->hdr;
392 tmfabort_wqe = (struct bnx2i_tmf_request *)
393 bnx2i_conn->ep->qp.sq_prod_qe;
394
395 tmfabort_wqe->op_code = tmfabort_hdr->opcode;
396 tmfabort_wqe->op_attr = 0;
397 tmfabort_wqe->op_attr =
398 ISCSI_TMF_REQUEST_ALWAYS_ONE | ISCSI_TM_FUNC_ABORT_TASK;
399
400 tmfabort_wqe->itt = (mtask->itt | (ISCSI_TASK_TYPE_MPATH << 14));
401 tmfabort_wqe->reserved2 = 0;
402 tmfabort_wqe->cmd_sn = be32_to_cpu(tmfabort_hdr->cmdsn);
403
404 ctask = iscsi_itt_to_task(conn, tmfabort_hdr->rtt);
405 if (!ctask || !ctask->sc)
406 /*
407 * the iscsi layer must have completed the cmd while this
408 * was starting up.
409 *
410 * Note: In the case of a SCSI cmd timeout, the task's sc
411 * is still active; hence ctask->sc != 0
412 * In this case, the task must be aborted
413 */
414 return 0;
415
416 ref_sc = ctask->sc;
417
418 /* Retrieve LUN directly from the ref_sc */
419 int_to_scsilun(ref_sc->device->lun, (struct scsi_lun *) scsi_lun);
420 tmfabort_wqe->lun[0] = be32_to_cpu(scsi_lun[0]);
421 tmfabort_wqe->lun[1] = be32_to_cpu(scsi_lun[1]);
422
423 if (ref_sc->sc_data_direction == DMA_TO_DEVICE)
424 dword = (ISCSI_TASK_TYPE_WRITE << ISCSI_CMD_REQUEST_TYPE_SHIFT);
425 else
426 dword = (ISCSI_TASK_TYPE_READ << ISCSI_CMD_REQUEST_TYPE_SHIFT);
427 tmfabort_wqe->ref_itt = (dword | (tmfabort_hdr->rtt & ISCSI_ITT_MASK));
428 tmfabort_wqe->ref_cmd_sn = be32_to_cpu(tmfabort_hdr->refcmdsn);
429
430 tmfabort_wqe->bd_list_addr_lo = (u32) bnx2i_conn->hba->mp_bd_dma;
431 tmfabort_wqe->bd_list_addr_hi = (u32)
432 ((u64) bnx2i_conn->hba->mp_bd_dma >> 32);
433 tmfabort_wqe->num_bds = 1;
434 tmfabort_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */
435
436 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1);
437 return 0;
438 }
439
440 /**
441 * bnx2i_send_iscsi_scsicmd - post iSCSI scsicmd request WQE to hardware
442 * @conn: iscsi connection
443 * @cmd: driver command structure which is requesting
444 * a WQE to sent to chip for further processing
445 *
446 * prepare and post an iSCSI SCSI-CMD request WQE to CNIC firmware
447 */
448 int bnx2i_send_iscsi_scsicmd(struct bnx2i_conn *bnx2i_conn,
449 struct bnx2i_cmd *cmd)
450 {
451 struct bnx2i_cmd_request *scsi_cmd_wqe;
452
453 scsi_cmd_wqe = (struct bnx2i_cmd_request *)
454 bnx2i_conn->ep->qp.sq_prod_qe;
455 memcpy(scsi_cmd_wqe, &cmd->req, sizeof(struct bnx2i_cmd_request));
456 scsi_cmd_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */
457
458 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1);
459 return 0;
460 }
461
462 /**
463 * bnx2i_send_iscsi_nopout - post iSCSI NOPOUT request WQE to hardware
464 * @conn: iscsi connection
465 * @cmd: driver command structure which is requesting
466 * a WQE to sent to chip for further processing
467 * @ttt: TTT to be used when building pdu header
468 * @datap: payload buffer pointer
469 * @data_len: payload data length
470 * @unsol: indicated whether nopout pdu is unsolicited pdu or
471 * in response to target's NOPIN w/ TTT != FFFFFFFF
472 *
473 * prepare and post a nopout request WQE to CNIC firmware
474 */
475 int bnx2i_send_iscsi_nopout(struct bnx2i_conn *bnx2i_conn,
476 struct iscsi_task *task, u32 ttt,
477 char *datap, int data_len, int unsol)
478 {
479 struct bnx2i_endpoint *ep = bnx2i_conn->ep;
480 struct bnx2i_cmd *bnx2i_cmd;
481 struct bnx2i_nop_out_request *nopout_wqe;
482 struct iscsi_nopout *nopout_hdr;
483
484 bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data;
485 nopout_hdr = (struct iscsi_nopout *)task->hdr;
486 nopout_wqe = (struct bnx2i_nop_out_request *)ep->qp.sq_prod_qe;
487 nopout_wqe->op_code = nopout_hdr->opcode;
488 nopout_wqe->op_attr = ISCSI_FLAG_CMD_FINAL;
489 memcpy(nopout_wqe->lun, nopout_hdr->lun, 8);
490
491 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) {
492 u32 tmp = nopout_hdr->lun[0];
493 /* 57710 requires LUN field to be swapped */
494 nopout_hdr->lun[0] = nopout_hdr->lun[1];
495 nopout_hdr->lun[1] = tmp;
496 }
497
498 nopout_wqe->itt = ((u16)task->itt |
499 (ISCSI_TASK_TYPE_MPATH <<
500 ISCSI_TMF_REQUEST_TYPE_SHIFT));
501 nopout_wqe->ttt = ttt;
502 nopout_wqe->flags = 0;
503 if (!unsol)
504 nopout_wqe->flags = ISCSI_NOP_OUT_REQUEST_LOCAL_COMPLETION;
505 else if (nopout_hdr->itt == RESERVED_ITT)
506 nopout_wqe->flags = ISCSI_NOP_OUT_REQUEST_LOCAL_COMPLETION;
507
508 nopout_wqe->cmd_sn = be32_to_cpu(nopout_hdr->cmdsn);
509 nopout_wqe->data_length = data_len;
510 if (data_len) {
511 /* handle payload data, not required in first release */
512 printk(KERN_ALERT "NOPOUT: WARNING!! payload len != 0\n");
513 } else {
514 nopout_wqe->bd_list_addr_lo = (u32)
515 bnx2i_conn->hba->mp_bd_dma;
516 nopout_wqe->bd_list_addr_hi =
517 (u32) ((u64) bnx2i_conn->hba->mp_bd_dma >> 32);
518 nopout_wqe->num_bds = 1;
519 }
520 nopout_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */
521
522 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1);
523 return 0;
524 }
525
526
527 /**
528 * bnx2i_send_iscsi_logout - post iSCSI logout request WQE to hardware
529 * @conn: iscsi connection
530 * @cmd: driver command structure which is requesting
531 * a WQE to sent to chip for further processing
532 *
533 * prepare and post logout request WQE to CNIC firmware
534 */
535 int bnx2i_send_iscsi_logout(struct bnx2i_conn *bnx2i_conn,
536 struct iscsi_task *task)
537 {
538 struct bnx2i_cmd *bnx2i_cmd;
539 struct bnx2i_logout_request *logout_wqe;
540 struct iscsi_logout *logout_hdr;
541
542 bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data;
543 logout_hdr = (struct iscsi_logout *)task->hdr;
544
545 logout_wqe = (struct bnx2i_logout_request *)
546 bnx2i_conn->ep->qp.sq_prod_qe;
547 memset(logout_wqe, 0x00, sizeof(struct bnx2i_logout_request));
548
549 logout_wqe->op_code = logout_hdr->opcode;
550 logout_wqe->cmd_sn = be32_to_cpu(logout_hdr->cmdsn);
551 logout_wqe->op_attr =
552 logout_hdr->flags | ISCSI_LOGOUT_REQUEST_ALWAYS_ONE;
553 logout_wqe->itt = ((u16)task->itt |
554 (ISCSI_TASK_TYPE_MPATH <<
555 ISCSI_LOGOUT_REQUEST_TYPE_SHIFT));
556 logout_wqe->data_length = 0;
557 logout_wqe->cid = 0;
558
559 logout_wqe->bd_list_addr_lo = (u32) bnx2i_conn->hba->mp_bd_dma;
560 logout_wqe->bd_list_addr_hi = (u32)
561 ((u64) bnx2i_conn->hba->mp_bd_dma >> 32);
562 logout_wqe->num_bds = 1;
563 logout_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */
564
565 bnx2i_conn->ep->state = EP_STATE_LOGOUT_SENT;
566
567 bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1);
568 return 0;
569 }
570
571
572 /**
573 * bnx2i_update_iscsi_conn - post iSCSI logout request WQE to hardware
574 * @conn: iscsi connection which requires iscsi parameter update
575 *
576 * sends down iSCSI Conn Update request to move iSCSI conn to FFP
577 */
578 void bnx2i_update_iscsi_conn(struct iscsi_conn *conn)
579 {
580 struct bnx2i_conn *bnx2i_conn = conn->dd_data;
581 struct bnx2i_hba *hba = bnx2i_conn->hba;
582 struct kwqe *kwqe_arr[2];
583 struct iscsi_kwqe_conn_update *update_wqe;
584 struct iscsi_kwqe_conn_update conn_update_kwqe;
585
586 update_wqe = &conn_update_kwqe;
587
588 update_wqe->hdr.op_code = ISCSI_KWQE_OPCODE_UPDATE_CONN;
589 update_wqe->hdr.flags =
590 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT);
591
592 /* 5771x requires conn context id to be passed as is */
593 if (test_bit(BNX2I_NX2_DEV_57710, &bnx2i_conn->ep->hba->cnic_dev_type))
594 update_wqe->context_id = bnx2i_conn->ep->ep_cid;
595 else
596 update_wqe->context_id = (bnx2i_conn->ep->ep_cid >> 7);
597 update_wqe->conn_flags = 0;
598 if (conn->hdrdgst_en)
599 update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_HEADER_DIGEST;
600 if (conn->datadgst_en)
601 update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_DATA_DIGEST;
602 if (conn->session->initial_r2t_en)
603 update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_INITIAL_R2T;
604 if (conn->session->imm_data_en)
605 update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_IMMEDIATE_DATA;
606
607 update_wqe->max_send_pdu_length = conn->max_xmit_dlength;
608 update_wqe->max_recv_pdu_length = conn->max_recv_dlength;
609 update_wqe->first_burst_length = conn->session->first_burst;
610 update_wqe->max_burst_length = conn->session->max_burst;
611 update_wqe->exp_stat_sn = conn->exp_statsn;
612 update_wqe->max_outstanding_r2ts = conn->session->max_r2t;
613 update_wqe->session_error_recovery_level = conn->session->erl;
614 iscsi_conn_printk(KERN_ALERT, conn,
615 "bnx2i: conn update - MBL 0x%x FBL 0x%x"
616 "MRDSL_I 0x%x MRDSL_T 0x%x \n",
617 update_wqe->max_burst_length,
618 update_wqe->first_burst_length,
619 update_wqe->max_recv_pdu_length,
620 update_wqe->max_send_pdu_length);
621
622 kwqe_arr[0] = (struct kwqe *) update_wqe;
623 if (hba->cnic && hba->cnic->submit_kwqes)
624 hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 1);
625 }
626
627
628 /**
629 * bnx2i_ep_ofld_timer - post iSCSI logout request WQE to hardware
630 * @data: endpoint (transport handle) structure pointer
631 *
632 * routine to handle connection offload/destroy request timeout
633 */
634 void bnx2i_ep_ofld_timer(unsigned long data)
635 {
636 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) data;
637
638 if (ep->state == EP_STATE_OFLD_START) {
639 printk(KERN_ALERT "ofld_timer: CONN_OFLD timeout\n");
640 ep->state = EP_STATE_OFLD_FAILED;
641 } else if (ep->state == EP_STATE_DISCONN_START) {
642 printk(KERN_ALERT "ofld_timer: CONN_DISCON timeout\n");
643 ep->state = EP_STATE_DISCONN_TIMEDOUT;
644 } else if (ep->state == EP_STATE_CLEANUP_START) {
645 printk(KERN_ALERT "ofld_timer: CONN_CLEANUP timeout\n");
646 ep->state = EP_STATE_CLEANUP_FAILED;
647 }
648
649 wake_up_interruptible(&ep->ofld_wait);
650 }
651
652
653 static int bnx2i_power_of2(u32 val)
654 {
655 u32 power = 0;
656 if (val & (val - 1))
657 return power;
658 val--;
659 while (val) {
660 val = val >> 1;
661 power++;
662 }
663 return power;
664 }
665
666
667 /**
668 * bnx2i_send_cmd_cleanup_req - send iscsi cmd context clean-up request
669 * @hba: adapter structure pointer
670 * @cmd: driver command structure which is requesting
671 * a WQE to sent to chip for further processing
672 *
673 * prepares and posts CONN_OFLD_REQ1/2 KWQE
674 */
675 void bnx2i_send_cmd_cleanup_req(struct bnx2i_hba *hba, struct bnx2i_cmd *cmd)
676 {
677 struct bnx2i_cleanup_request *cmd_cleanup;
678
679 cmd_cleanup =
680 (struct bnx2i_cleanup_request *)cmd->conn->ep->qp.sq_prod_qe;
681 memset(cmd_cleanup, 0x00, sizeof(struct bnx2i_cleanup_request));
682
683 cmd_cleanup->op_code = ISCSI_OPCODE_CLEANUP_REQUEST;
684 cmd_cleanup->itt = cmd->req.itt;
685 cmd_cleanup->cq_index = 0; /* CQ# used for completion, 5771x only */
686
687 bnx2i_ring_dbell_update_sq_params(cmd->conn, 1);
688 }
689
690
691 /**
692 * bnx2i_send_conn_destroy - initiates iscsi connection teardown process
693 * @hba: adapter structure pointer
694 * @ep: endpoint (transport indentifier) structure
695 *
696 * this routine prepares and posts CONN_OFLD_REQ1/2 KWQE to initiate
697 * iscsi connection context clean-up process
698 */
699 void bnx2i_send_conn_destroy(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep)
700 {
701 struct kwqe *kwqe_arr[2];
702 struct iscsi_kwqe_conn_destroy conn_cleanup;
703
704 memset(&conn_cleanup, 0x00, sizeof(struct iscsi_kwqe_conn_destroy));
705
706 conn_cleanup.hdr.op_code = ISCSI_KWQE_OPCODE_DESTROY_CONN;
707 conn_cleanup.hdr.flags =
708 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT);
709 /* 5771x requires conn context id to be passed as is */
710 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type))
711 conn_cleanup.context_id = ep->ep_cid;
712 else
713 conn_cleanup.context_id = (ep->ep_cid >> 7);
714
715 conn_cleanup.reserved0 = (u16)ep->ep_iscsi_cid;
716
717 kwqe_arr[0] = (struct kwqe *) &conn_cleanup;
718 if (hba->cnic && hba->cnic->submit_kwqes)
719 hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 1);
720 }
721
722
723 /**
724 * bnx2i_570x_send_conn_ofld_req - initiates iscsi conn context setup process
725 * @hba: adapter structure pointer
726 * @ep: endpoint (transport indentifier) structure
727 *
728 * 5706/5708/5709 specific - prepares and posts CONN_OFLD_REQ1/2 KWQE
729 */
730 static void bnx2i_570x_send_conn_ofld_req(struct bnx2i_hba *hba,
731 struct bnx2i_endpoint *ep)
732 {
733 struct kwqe *kwqe_arr[2];
734 struct iscsi_kwqe_conn_offload1 ofld_req1;
735 struct iscsi_kwqe_conn_offload2 ofld_req2;
736 dma_addr_t dma_addr;
737 int num_kwqes = 2;
738 u32 *ptbl;
739
740 ofld_req1.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN1;
741 ofld_req1.hdr.flags =
742 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT);
743
744 ofld_req1.iscsi_conn_id = (u16) ep->ep_iscsi_cid;
745
746 dma_addr = ep->qp.sq_pgtbl_phys;
747 ofld_req1.sq_page_table_addr_lo = (u32) dma_addr;
748 ofld_req1.sq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32);
749
750 dma_addr = ep->qp.cq_pgtbl_phys;
751 ofld_req1.cq_page_table_addr_lo = (u32) dma_addr;
752 ofld_req1.cq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32);
753
754 ofld_req2.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN2;
755 ofld_req2.hdr.flags =
756 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT);
757
758 dma_addr = ep->qp.rq_pgtbl_phys;
759 ofld_req2.rq_page_table_addr_lo = (u32) dma_addr;
760 ofld_req2.rq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32);
761
762 ptbl = (u32 *) ep->qp.sq_pgtbl_virt;
763
764 ofld_req2.sq_first_pte.hi = *ptbl++;
765 ofld_req2.sq_first_pte.lo = *ptbl;
766
767 ptbl = (u32 *) ep->qp.cq_pgtbl_virt;
768 ofld_req2.cq_first_pte.hi = *ptbl++;
769 ofld_req2.cq_first_pte.lo = *ptbl;
770
771 kwqe_arr[0] = (struct kwqe *) &ofld_req1;
772 kwqe_arr[1] = (struct kwqe *) &ofld_req2;
773 ofld_req2.num_additional_wqes = 0;
774
775 if (hba->cnic && hba->cnic->submit_kwqes)
776 hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
777 }
778
779
780 /**
781 * bnx2i_5771x_send_conn_ofld_req - initiates iscsi connection context creation
782 * @hba: adapter structure pointer
783 * @ep: endpoint (transport indentifier) structure
784 *
785 * 57710 specific - prepares and posts CONN_OFLD_REQ1/2 KWQE
786 */
787 static void bnx2i_5771x_send_conn_ofld_req(struct bnx2i_hba *hba,
788 struct bnx2i_endpoint *ep)
789 {
790 struct kwqe *kwqe_arr[5];
791 struct iscsi_kwqe_conn_offload1 ofld_req1;
792 struct iscsi_kwqe_conn_offload2 ofld_req2;
793 struct iscsi_kwqe_conn_offload3 ofld_req3[1];
794 dma_addr_t dma_addr;
795 int num_kwqes = 2;
796 u32 *ptbl;
797
798 ofld_req1.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN1;
799 ofld_req1.hdr.flags =
800 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT);
801
802 ofld_req1.iscsi_conn_id = (u16) ep->ep_iscsi_cid;
803
804 dma_addr = ep->qp.sq_pgtbl_phys + ISCSI_SQ_DB_SIZE;
805 ofld_req1.sq_page_table_addr_lo = (u32) dma_addr;
806 ofld_req1.sq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32);
807
808 dma_addr = ep->qp.cq_pgtbl_phys + ISCSI_CQ_DB_SIZE;
809 ofld_req1.cq_page_table_addr_lo = (u32) dma_addr;
810 ofld_req1.cq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32);
811
812 ofld_req2.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN2;
813 ofld_req2.hdr.flags =
814 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT);
815
816 dma_addr = ep->qp.rq_pgtbl_phys + ISCSI_RQ_DB_SIZE;
817 ofld_req2.rq_page_table_addr_lo = (u32) dma_addr;
818 ofld_req2.rq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32);
819
820 ptbl = (u32 *)((u8 *)ep->qp.sq_pgtbl_virt + ISCSI_SQ_DB_SIZE);
821 ofld_req2.sq_first_pte.hi = *ptbl++;
822 ofld_req2.sq_first_pte.lo = *ptbl;
823
824 ptbl = (u32 *)((u8 *)ep->qp.cq_pgtbl_virt + ISCSI_CQ_DB_SIZE);
825 ofld_req2.cq_first_pte.hi = *ptbl++;
826 ofld_req2.cq_first_pte.lo = *ptbl;
827
828 kwqe_arr[0] = (struct kwqe *) &ofld_req1;
829 kwqe_arr[1] = (struct kwqe *) &ofld_req2;
830
831 ofld_req2.num_additional_wqes = 1;
832 memset(ofld_req3, 0x00, sizeof(ofld_req3[0]));
833 ptbl = (u32 *)((u8 *)ep->qp.rq_pgtbl_virt + ISCSI_RQ_DB_SIZE);
834 ofld_req3[0].qp_first_pte[0].hi = *ptbl++;
835 ofld_req3[0].qp_first_pte[0].lo = *ptbl;
836
837 kwqe_arr[2] = (struct kwqe *) ofld_req3;
838 /* need if we decide to go with multiple KCQE's per conn */
839 num_kwqes += 1;
840
841 if (hba->cnic && hba->cnic->submit_kwqes)
842 hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
843 }
844
845 /**
846 * bnx2i_send_conn_ofld_req - initiates iscsi connection context setup process
847 *
848 * @hba: adapter structure pointer
849 * @ep: endpoint (transport indentifier) structure
850 *
851 * this routine prepares and posts CONN_OFLD_REQ1/2 KWQE
852 */
853 void bnx2i_send_conn_ofld_req(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep)
854 {
855 if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type))
856 bnx2i_5771x_send_conn_ofld_req(hba, ep);
857 else
858 bnx2i_570x_send_conn_ofld_req(hba, ep);
859 }
860
861
862 /**
863 * setup_qp_page_tables - iscsi QP page table setup function
864 * @ep: endpoint (transport indentifier) structure
865 *
866 * Sets up page tables for SQ/RQ/CQ, 1G/sec (5706/5708/5709) devices requires
867 * 64-bit address in big endian format. Whereas 10G/sec (57710) requires
868 * PT in little endian format
869 */
870 static void setup_qp_page_tables(struct bnx2i_endpoint *ep)
871 {
872 int num_pages;
873 u32 *ptbl;
874 dma_addr_t page;
875 int cnic_dev_10g;
876
877 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type))
878 cnic_dev_10g = 1;
879 else
880 cnic_dev_10g = 0;
881
882 /* SQ page table */
883 memset(ep->qp.sq_pgtbl_virt, 0, ep->qp.sq_pgtbl_size);
884 num_pages = ep->qp.sq_mem_size / PAGE_SIZE;
885 page = ep->qp.sq_phys;
886
887 if (cnic_dev_10g)
888 ptbl = (u32 *)((u8 *)ep->qp.sq_pgtbl_virt + ISCSI_SQ_DB_SIZE);
889 else
890 ptbl = (u32 *) ep->qp.sq_pgtbl_virt;
891 while (num_pages--) {
892 if (cnic_dev_10g) {
893 /* PTE is written in little endian format for 57710 */
894 *ptbl = (u32) page;
895 ptbl++;
896 *ptbl = (u32) ((u64) page >> 32);
897 ptbl++;
898 page += PAGE_SIZE;
899 } else {
900 /* PTE is written in big endian format for
901 * 5706/5708/5709 devices */
902 *ptbl = (u32) ((u64) page >> 32);
903 ptbl++;
904 *ptbl = (u32) page;
905 ptbl++;
906 page += PAGE_SIZE;
907 }
908 }
909
910 /* RQ page table */
911 memset(ep->qp.rq_pgtbl_virt, 0, ep->qp.rq_pgtbl_size);
912 num_pages = ep->qp.rq_mem_size / PAGE_SIZE;
913 page = ep->qp.rq_phys;
914
915 if (cnic_dev_10g)
916 ptbl = (u32 *)((u8 *)ep->qp.rq_pgtbl_virt + ISCSI_RQ_DB_SIZE);
917 else
918 ptbl = (u32 *) ep->qp.rq_pgtbl_virt;
919 while (num_pages--) {
920 if (cnic_dev_10g) {
921 /* PTE is written in little endian format for 57710 */
922 *ptbl = (u32) page;
923 ptbl++;
924 *ptbl = (u32) ((u64) page >> 32);
925 ptbl++;
926 page += PAGE_SIZE;
927 } else {
928 /* PTE is written in big endian format for
929 * 5706/5708/5709 devices */
930 *ptbl = (u32) ((u64) page >> 32);
931 ptbl++;
932 *ptbl = (u32) page;
933 ptbl++;
934 page += PAGE_SIZE;
935 }
936 }
937
938 /* CQ page table */
939 memset(ep->qp.cq_pgtbl_virt, 0, ep->qp.cq_pgtbl_size);
940 num_pages = ep->qp.cq_mem_size / PAGE_SIZE;
941 page = ep->qp.cq_phys;
942
943 if (cnic_dev_10g)
944 ptbl = (u32 *)((u8 *)ep->qp.cq_pgtbl_virt + ISCSI_CQ_DB_SIZE);
945 else
946 ptbl = (u32 *) ep->qp.cq_pgtbl_virt;
947 while (num_pages--) {
948 if (cnic_dev_10g) {
949 /* PTE is written in little endian format for 57710 */
950 *ptbl = (u32) page;
951 ptbl++;
952 *ptbl = (u32) ((u64) page >> 32);
953 ptbl++;
954 page += PAGE_SIZE;
955 } else {
956 /* PTE is written in big endian format for
957 * 5706/5708/5709 devices */
958 *ptbl = (u32) ((u64) page >> 32);
959 ptbl++;
960 *ptbl = (u32) page;
961 ptbl++;
962 page += PAGE_SIZE;
963 }
964 }
965 }
966
967
968 /**
969 * bnx2i_alloc_qp_resc - allocates required resources for QP.
970 * @hba: adapter structure pointer
971 * @ep: endpoint (transport indentifier) structure
972 *
973 * Allocate QP (transport layer for iSCSI connection) resources, DMA'able
974 * memory for SQ/RQ/CQ and page tables. EP structure elements such
975 * as producer/consumer indexes/pointers, queue sizes and page table
976 * contents are setup
977 */
978 int bnx2i_alloc_qp_resc(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep)
979 {
980 struct bnx2i_5771x_cq_db *cq_db;
981
982 ep->hba = hba;
983 ep->conn = NULL;
984 ep->ep_cid = ep->ep_iscsi_cid = ep->ep_pg_cid = 0;
985
986 /* Allocate page table memory for SQ which is page aligned */
987 ep->qp.sq_mem_size = hba->max_sqes * BNX2I_SQ_WQE_SIZE;
988 ep->qp.sq_mem_size =
989 (ep->qp.sq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK;
990 ep->qp.sq_pgtbl_size =
991 (ep->qp.sq_mem_size / PAGE_SIZE) * sizeof(void *);
992 ep->qp.sq_pgtbl_size =
993 (ep->qp.sq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK;
994
995 ep->qp.sq_pgtbl_virt =
996 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.sq_pgtbl_size,
997 &ep->qp.sq_pgtbl_phys, GFP_KERNEL);
998 if (!ep->qp.sq_pgtbl_virt) {
999 printk(KERN_ALERT "bnx2i: unable to alloc SQ PT mem (%d)\n",
1000 ep->qp.sq_pgtbl_size);
1001 goto mem_alloc_err;
1002 }
1003
1004 /* Allocate memory area for actual SQ element */
1005 ep->qp.sq_virt =
1006 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.sq_mem_size,
1007 &ep->qp.sq_phys, GFP_KERNEL);
1008 if (!ep->qp.sq_virt) {
1009 printk(KERN_ALERT "bnx2i: unable to alloc SQ BD memory %d\n",
1010 ep->qp.sq_mem_size);
1011 goto mem_alloc_err;
1012 }
1013
1014 memset(ep->qp.sq_virt, 0x00, ep->qp.sq_mem_size);
1015 ep->qp.sq_first_qe = ep->qp.sq_virt;
1016 ep->qp.sq_prod_qe = ep->qp.sq_first_qe;
1017 ep->qp.sq_cons_qe = ep->qp.sq_first_qe;
1018 ep->qp.sq_last_qe = &ep->qp.sq_first_qe[hba->max_sqes - 1];
1019 ep->qp.sq_prod_idx = 0;
1020 ep->qp.sq_cons_idx = 0;
1021 ep->qp.sqe_left = hba->max_sqes;
1022
1023 /* Allocate page table memory for CQ which is page aligned */
1024 ep->qp.cq_mem_size = hba->max_cqes * BNX2I_CQE_SIZE;
1025 ep->qp.cq_mem_size =
1026 (ep->qp.cq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK;
1027 ep->qp.cq_pgtbl_size =
1028 (ep->qp.cq_mem_size / PAGE_SIZE) * sizeof(void *);
1029 ep->qp.cq_pgtbl_size =
1030 (ep->qp.cq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK;
1031
1032 ep->qp.cq_pgtbl_virt =
1033 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.cq_pgtbl_size,
1034 &ep->qp.cq_pgtbl_phys, GFP_KERNEL);
1035 if (!ep->qp.cq_pgtbl_virt) {
1036 printk(KERN_ALERT "bnx2i: unable to alloc CQ PT memory %d\n",
1037 ep->qp.cq_pgtbl_size);
1038 goto mem_alloc_err;
1039 }
1040
1041 /* Allocate memory area for actual CQ element */
1042 ep->qp.cq_virt =
1043 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.cq_mem_size,
1044 &ep->qp.cq_phys, GFP_KERNEL);
1045 if (!ep->qp.cq_virt) {
1046 printk(KERN_ALERT "bnx2i: unable to alloc CQ BD memory %d\n",
1047 ep->qp.cq_mem_size);
1048 goto mem_alloc_err;
1049 }
1050 memset(ep->qp.cq_virt, 0x00, ep->qp.cq_mem_size);
1051
1052 ep->qp.cq_first_qe = ep->qp.cq_virt;
1053 ep->qp.cq_prod_qe = ep->qp.cq_first_qe;
1054 ep->qp.cq_cons_qe = ep->qp.cq_first_qe;
1055 ep->qp.cq_last_qe = &ep->qp.cq_first_qe[hba->max_cqes - 1];
1056 ep->qp.cq_prod_idx = 0;
1057 ep->qp.cq_cons_idx = 0;
1058 ep->qp.cqe_left = hba->max_cqes;
1059 ep->qp.cqe_exp_seq_sn = ISCSI_INITIAL_SN;
1060 ep->qp.cqe_size = hba->max_cqes;
1061
1062 /* Invalidate all EQ CQE index, req only for 57710 */
1063 cq_db = (struct bnx2i_5771x_cq_db *) ep->qp.cq_pgtbl_virt;
1064 memset(cq_db->sqn, 0xFF, sizeof(cq_db->sqn[0]) * BNX2X_MAX_CQS);
1065
1066 /* Allocate page table memory for RQ which is page aligned */
1067 ep->qp.rq_mem_size = hba->max_rqes * BNX2I_RQ_WQE_SIZE;
1068 ep->qp.rq_mem_size =
1069 (ep->qp.rq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK;
1070 ep->qp.rq_pgtbl_size =
1071 (ep->qp.rq_mem_size / PAGE_SIZE) * sizeof(void *);
1072 ep->qp.rq_pgtbl_size =
1073 (ep->qp.rq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK;
1074
1075 ep->qp.rq_pgtbl_virt =
1076 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.rq_pgtbl_size,
1077 &ep->qp.rq_pgtbl_phys, GFP_KERNEL);
1078 if (!ep->qp.rq_pgtbl_virt) {
1079 printk(KERN_ALERT "bnx2i: unable to alloc RQ PT mem %d\n",
1080 ep->qp.rq_pgtbl_size);
1081 goto mem_alloc_err;
1082 }
1083
1084 /* Allocate memory area for actual RQ element */
1085 ep->qp.rq_virt =
1086 dma_alloc_coherent(&hba->pcidev->dev, ep->qp.rq_mem_size,
1087 &ep->qp.rq_phys, GFP_KERNEL);
1088 if (!ep->qp.rq_virt) {
1089 printk(KERN_ALERT "bnx2i: unable to alloc RQ BD memory %d\n",
1090 ep->qp.rq_mem_size);
1091 goto mem_alloc_err;
1092 }
1093
1094 ep->qp.rq_first_qe = ep->qp.rq_virt;
1095 ep->qp.rq_prod_qe = ep->qp.rq_first_qe;
1096 ep->qp.rq_cons_qe = ep->qp.rq_first_qe;
1097 ep->qp.rq_last_qe = &ep->qp.rq_first_qe[hba->max_rqes - 1];
1098 ep->qp.rq_prod_idx = 0x8000;
1099 ep->qp.rq_cons_idx = 0;
1100 ep->qp.rqe_left = hba->max_rqes;
1101
1102 setup_qp_page_tables(ep);
1103
1104 return 0;
1105
1106 mem_alloc_err:
1107 bnx2i_free_qp_resc(hba, ep);
1108 return -ENOMEM;
1109 }
1110
1111
1112
1113 /**
1114 * bnx2i_free_qp_resc - free memory resources held by QP
1115 * @hba: adapter structure pointer
1116 * @ep: endpoint (transport indentifier) structure
1117 *
1118 * Free QP resources - SQ/RQ/CQ memory and page tables.
1119 */
1120 void bnx2i_free_qp_resc(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep)
1121 {
1122 if (ep->qp.ctx_base) {
1123 iounmap(ep->qp.ctx_base);
1124 ep->qp.ctx_base = NULL;
1125 }
1126 /* Free SQ mem */
1127 if (ep->qp.sq_pgtbl_virt) {
1128 dma_free_coherent(&hba->pcidev->dev, ep->qp.sq_pgtbl_size,
1129 ep->qp.sq_pgtbl_virt, ep->qp.sq_pgtbl_phys);
1130 ep->qp.sq_pgtbl_virt = NULL;
1131 ep->qp.sq_pgtbl_phys = 0;
1132 }
1133 if (ep->qp.sq_virt) {
1134 dma_free_coherent(&hba->pcidev->dev, ep->qp.sq_mem_size,
1135 ep->qp.sq_virt, ep->qp.sq_phys);
1136 ep->qp.sq_virt = NULL;
1137 ep->qp.sq_phys = 0;
1138 }
1139
1140 /* Free RQ mem */
1141 if (ep->qp.rq_pgtbl_virt) {
1142 dma_free_coherent(&hba->pcidev->dev, ep->qp.rq_pgtbl_size,
1143 ep->qp.rq_pgtbl_virt, ep->qp.rq_pgtbl_phys);
1144 ep->qp.rq_pgtbl_virt = NULL;
1145 ep->qp.rq_pgtbl_phys = 0;
1146 }
1147 if (ep->qp.rq_virt) {
1148 dma_free_coherent(&hba->pcidev->dev, ep->qp.rq_mem_size,
1149 ep->qp.rq_virt, ep->qp.rq_phys);
1150 ep->qp.rq_virt = NULL;
1151 ep->qp.rq_phys = 0;
1152 }
1153
1154 /* Free CQ mem */
1155 if (ep->qp.cq_pgtbl_virt) {
1156 dma_free_coherent(&hba->pcidev->dev, ep->qp.cq_pgtbl_size,
1157 ep->qp.cq_pgtbl_virt, ep->qp.cq_pgtbl_phys);
1158 ep->qp.cq_pgtbl_virt = NULL;
1159 ep->qp.cq_pgtbl_phys = 0;
1160 }
1161 if (ep->qp.cq_virt) {
1162 dma_free_coherent(&hba->pcidev->dev, ep->qp.cq_mem_size,
1163 ep->qp.cq_virt, ep->qp.cq_phys);
1164 ep->qp.cq_virt = NULL;
1165 ep->qp.cq_phys = 0;
1166 }
1167 }
1168
1169
1170 /**
1171 * bnx2i_send_fw_iscsi_init_msg - initiates initial handshake with iscsi f/w
1172 * @hba: adapter structure pointer
1173 *
1174 * Send down iscsi_init KWQEs which initiates the initial handshake with the f/w
1175 * This results in iSCSi support validation and on-chip context manager
1176 * initialization. Firmware completes this handshake with a CQE carrying
1177 * the result of iscsi support validation. Parameter carried by
1178 * iscsi init request determines the number of offloaded connection and
1179 * tolerance level for iscsi protocol violation this hba/chip can support
1180 */
1181 int bnx2i_send_fw_iscsi_init_msg(struct bnx2i_hba *hba)
1182 {
1183 struct kwqe *kwqe_arr[3];
1184 struct iscsi_kwqe_init1 iscsi_init;
1185 struct iscsi_kwqe_init2 iscsi_init2;
1186 int rc = 0;
1187 u64 mask64;
1188
1189 bnx2i_adjust_qp_size(hba);
1190
1191 iscsi_init.flags =
1192 ISCSI_PAGE_SIZE_4K << ISCSI_KWQE_INIT1_PAGE_SIZE_SHIFT;
1193 if (en_tcp_dack)
1194 iscsi_init.flags |= ISCSI_KWQE_INIT1_DELAYED_ACK_ENABLE;
1195 iscsi_init.reserved0 = 0;
1196 iscsi_init.num_cqs = 1;
1197 iscsi_init.hdr.op_code = ISCSI_KWQE_OPCODE_INIT1;
1198 iscsi_init.hdr.flags =
1199 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT);
1200
1201 iscsi_init.dummy_buffer_addr_lo = (u32) hba->dummy_buf_dma;
1202 iscsi_init.dummy_buffer_addr_hi =
1203 (u32) ((u64) hba->dummy_buf_dma >> 32);
1204
1205 hba->ctx_ccell_tasks =
1206 ((hba->num_ccell & 0xFFFF) | (hba->max_sqes << 16));
1207 iscsi_init.num_ccells_per_conn = hba->num_ccell;
1208 iscsi_init.num_tasks_per_conn = hba->max_sqes;
1209 iscsi_init.sq_wqes_per_page = PAGE_SIZE / BNX2I_SQ_WQE_SIZE;
1210 iscsi_init.sq_num_wqes = hba->max_sqes;
1211 iscsi_init.cq_log_wqes_per_page =
1212 (u8) bnx2i_power_of2(PAGE_SIZE / BNX2I_CQE_SIZE);
1213 iscsi_init.cq_num_wqes = hba->max_cqes;
1214 iscsi_init.cq_num_pages = (hba->max_cqes * BNX2I_CQE_SIZE +
1215 (PAGE_SIZE - 1)) / PAGE_SIZE;
1216 iscsi_init.sq_num_pages = (hba->max_sqes * BNX2I_SQ_WQE_SIZE +
1217 (PAGE_SIZE - 1)) / PAGE_SIZE;
1218 iscsi_init.rq_buffer_size = BNX2I_RQ_WQE_SIZE;
1219 iscsi_init.rq_num_wqes = hba->max_rqes;
1220
1221
1222 iscsi_init2.hdr.op_code = ISCSI_KWQE_OPCODE_INIT2;
1223 iscsi_init2.hdr.flags =
1224 (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT);
1225 iscsi_init2.max_cq_sqn = hba->max_cqes * 2 + 1;
1226 mask64 = 0x0ULL;
1227 mask64 |= (
1228 /* CISCO MDS */
1229 (1UL <<
1230 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_NOT_RSRV) |
1231 /* HP MSA1510i */
1232 (1UL <<
1233 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_EXP_DATASN) |
1234 /* EMC */
1235 (1ULL << ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_LUN));
1236 if (error_mask1)
1237 iscsi_init2.error_bit_map[0] = error_mask1;
1238 else
1239 iscsi_init2.error_bit_map[0] = (u32) mask64;
1240
1241 if (error_mask2)
1242 iscsi_init2.error_bit_map[1] = error_mask2;
1243 else
1244 iscsi_init2.error_bit_map[1] = (u32) (mask64 >> 32);
1245
1246 iscsi_error_mask = mask64;
1247
1248 kwqe_arr[0] = (struct kwqe *) &iscsi_init;
1249 kwqe_arr[1] = (struct kwqe *) &iscsi_init2;
1250
1251 if (hba->cnic && hba->cnic->submit_kwqes)
1252 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 2);
1253 return rc;
1254 }
1255
1256
1257 /**
1258 * bnx2i_process_scsi_cmd_resp - this function handles scsi cmd completion.
1259 * @conn: iscsi connection
1260 * @cqe: pointer to newly DMA'ed CQE entry for processing
1261 *
1262 * process SCSI CMD Response CQE & complete the request to SCSI-ML
1263 */
1264 static int bnx2i_process_scsi_cmd_resp(struct iscsi_session *session,
1265 struct bnx2i_conn *bnx2i_conn,
1266 struct cqe *cqe)
1267 {
1268 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data;
1269 struct bnx2i_cmd_response *resp_cqe;
1270 struct bnx2i_cmd *bnx2i_cmd;
1271 struct iscsi_task *task;
1272 struct iscsi_cmd_rsp *hdr;
1273 u32 datalen = 0;
1274
1275 resp_cqe = (struct bnx2i_cmd_response *)cqe;
1276 spin_lock(&session->lock);
1277 task = iscsi_itt_to_task(conn,
1278 resp_cqe->itt & ISCSI_CMD_RESPONSE_INDEX);
1279 if (!task)
1280 goto fail;
1281
1282 bnx2i_cmd = task->dd_data;
1283
1284 if (bnx2i_cmd->req.op_attr & ISCSI_CMD_REQUEST_READ) {
1285 conn->datain_pdus_cnt +=
1286 resp_cqe->task_stat.read_stat.num_data_outs;
1287 conn->rxdata_octets +=
1288 bnx2i_cmd->req.total_data_transfer_length;
1289 } else {
1290 conn->dataout_pdus_cnt +=
1291 resp_cqe->task_stat.read_stat.num_data_outs;
1292 conn->r2t_pdus_cnt +=
1293 resp_cqe->task_stat.read_stat.num_r2ts;
1294 conn->txdata_octets +=
1295 bnx2i_cmd->req.total_data_transfer_length;
1296 }
1297 bnx2i_iscsi_unmap_sg_list(bnx2i_cmd);
1298
1299 hdr = (struct iscsi_cmd_rsp *)task->hdr;
1300 resp_cqe = (struct bnx2i_cmd_response *)cqe;
1301 hdr->opcode = resp_cqe->op_code;
1302 hdr->max_cmdsn = cpu_to_be32(resp_cqe->max_cmd_sn);
1303 hdr->exp_cmdsn = cpu_to_be32(resp_cqe->exp_cmd_sn);
1304 hdr->response = resp_cqe->response;
1305 hdr->cmd_status = resp_cqe->status;
1306 hdr->flags = resp_cqe->response_flags;
1307 hdr->residual_count = cpu_to_be32(resp_cqe->residual_count);
1308
1309 if (resp_cqe->op_code == ISCSI_OP_SCSI_DATA_IN)
1310 goto done;
1311
1312 if (resp_cqe->status == SAM_STAT_CHECK_CONDITION) {
1313 datalen = resp_cqe->data_length;
1314 if (datalen < 2)
1315 goto done;
1316
1317 if (datalen > BNX2I_RQ_WQE_SIZE) {
1318 iscsi_conn_printk(KERN_ERR, conn,
1319 "sense data len %d > RQ sz\n",
1320 datalen);
1321 datalen = BNX2I_RQ_WQE_SIZE;
1322 } else if (datalen > ISCSI_DEF_MAX_RECV_SEG_LEN) {
1323 iscsi_conn_printk(KERN_ERR, conn,
1324 "sense data len %d > conn data\n",
1325 datalen);
1326 datalen = ISCSI_DEF_MAX_RECV_SEG_LEN;
1327 }
1328
1329 bnx2i_get_rq_buf(bnx2i_cmd->conn, conn->data, datalen);
1330 bnx2i_put_rq_buf(bnx2i_cmd->conn, 1);
1331 }
1332
1333 done:
1334 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr,
1335 conn->data, datalen);
1336 fail:
1337 spin_unlock(&session->lock);
1338 return 0;
1339 }
1340
1341
1342 /**
1343 * bnx2i_process_login_resp - this function handles iscsi login response
1344 * @session: iscsi session pointer
1345 * @bnx2i_conn: iscsi connection pointer
1346 * @cqe: pointer to newly DMA'ed CQE entry for processing
1347 *
1348 * process Login Response CQE & complete it to open-iscsi user daemon
1349 */
1350 static int bnx2i_process_login_resp(struct iscsi_session *session,
1351 struct bnx2i_conn *bnx2i_conn,
1352 struct cqe *cqe)
1353 {
1354 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data;
1355 struct iscsi_task *task;
1356 struct bnx2i_login_response *login;
1357 struct iscsi_login_rsp *resp_hdr;
1358 int pld_len;
1359 int pad_len;
1360
1361 login = (struct bnx2i_login_response *) cqe;
1362 spin_lock(&session->lock);
1363 task = iscsi_itt_to_task(conn,
1364 login->itt & ISCSI_LOGIN_RESPONSE_INDEX);
1365 if (!task)
1366 goto done;
1367
1368 resp_hdr = (struct iscsi_login_rsp *) &bnx2i_conn->gen_pdu.resp_hdr;
1369 memset(resp_hdr, 0, sizeof(struct iscsi_hdr));
1370 resp_hdr->opcode = login->op_code;
1371 resp_hdr->flags = login->response_flags;
1372 resp_hdr->max_version = login->version_max;
1373 resp_hdr->active_version = login->version_active;
1374 resp_hdr->hlength = 0;
1375
1376 hton24(resp_hdr->dlength, login->data_length);
1377 memcpy(resp_hdr->isid, &login->isid_lo, 6);
1378 resp_hdr->tsih = cpu_to_be16(login->tsih);
1379 resp_hdr->itt = task->hdr->itt;
1380 resp_hdr->statsn = cpu_to_be32(login->stat_sn);
1381 resp_hdr->exp_cmdsn = cpu_to_be32(login->exp_cmd_sn);
1382 resp_hdr->max_cmdsn = cpu_to_be32(login->max_cmd_sn);
1383 resp_hdr->status_class = login->status_class;
1384 resp_hdr->status_detail = login->status_detail;
1385 pld_len = login->data_length;
1386 bnx2i_conn->gen_pdu.resp_wr_ptr =
1387 bnx2i_conn->gen_pdu.resp_buf + pld_len;
1388
1389 pad_len = 0;
1390 if (pld_len & 0x3)
1391 pad_len = 4 - (pld_len % 4);
1392
1393 if (pad_len) {
1394 int i = 0;
1395 for (i = 0; i < pad_len; i++) {
1396 bnx2i_conn->gen_pdu.resp_wr_ptr[0] = 0;
1397 bnx2i_conn->gen_pdu.resp_wr_ptr++;
1398 }
1399 }
1400
1401 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr,
1402 bnx2i_conn->gen_pdu.resp_buf,
1403 bnx2i_conn->gen_pdu.resp_wr_ptr - bnx2i_conn->gen_pdu.resp_buf);
1404 done:
1405 spin_unlock(&session->lock);
1406 return 0;
1407 }
1408
1409 /**
1410 * bnx2i_process_tmf_resp - this function handles iscsi TMF response
1411 * @session: iscsi session pointer
1412 * @bnx2i_conn: iscsi connection pointer
1413 * @cqe: pointer to newly DMA'ed CQE entry for processing
1414 *
1415 * process iSCSI TMF Response CQE and wake up the driver eh thread.
1416 */
1417 static int bnx2i_process_tmf_resp(struct iscsi_session *session,
1418 struct bnx2i_conn *bnx2i_conn,
1419 struct cqe *cqe)
1420 {
1421 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data;
1422 struct iscsi_task *task;
1423 struct bnx2i_tmf_response *tmf_cqe;
1424 struct iscsi_tm_rsp *resp_hdr;
1425
1426 tmf_cqe = (struct bnx2i_tmf_response *)cqe;
1427 spin_lock(&session->lock);
1428 task = iscsi_itt_to_task(conn,
1429 tmf_cqe->itt & ISCSI_TMF_RESPONSE_INDEX);
1430 if (!task)
1431 goto done;
1432
1433 resp_hdr = (struct iscsi_tm_rsp *) &bnx2i_conn->gen_pdu.resp_hdr;
1434 memset(resp_hdr, 0, sizeof(struct iscsi_hdr));
1435 resp_hdr->opcode = tmf_cqe->op_code;
1436 resp_hdr->max_cmdsn = cpu_to_be32(tmf_cqe->max_cmd_sn);
1437 resp_hdr->exp_cmdsn = cpu_to_be32(tmf_cqe->exp_cmd_sn);
1438 resp_hdr->itt = task->hdr->itt;
1439 resp_hdr->response = tmf_cqe->response;
1440
1441 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0);
1442 done:
1443 spin_unlock(&session->lock);
1444 return 0;
1445 }
1446
1447 /**
1448 * bnx2i_process_logout_resp - this function handles iscsi logout response
1449 * @session: iscsi session pointer
1450 * @bnx2i_conn: iscsi connection pointer
1451 * @cqe: pointer to newly DMA'ed CQE entry for processing
1452 *
1453 * process iSCSI Logout Response CQE & make function call to
1454 * notify the user daemon.
1455 */
1456 static int bnx2i_process_logout_resp(struct iscsi_session *session,
1457 struct bnx2i_conn *bnx2i_conn,
1458 struct cqe *cqe)
1459 {
1460 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data;
1461 struct iscsi_task *task;
1462 struct bnx2i_logout_response *logout;
1463 struct iscsi_logout_rsp *resp_hdr;
1464
1465 logout = (struct bnx2i_logout_response *) cqe;
1466 spin_lock(&session->lock);
1467 task = iscsi_itt_to_task(conn,
1468 logout->itt & ISCSI_LOGOUT_RESPONSE_INDEX);
1469 if (!task)
1470 goto done;
1471
1472 resp_hdr = (struct iscsi_logout_rsp *) &bnx2i_conn->gen_pdu.resp_hdr;
1473 memset(resp_hdr, 0, sizeof(struct iscsi_hdr));
1474 resp_hdr->opcode = logout->op_code;
1475 resp_hdr->flags = logout->response;
1476 resp_hdr->hlength = 0;
1477
1478 resp_hdr->itt = task->hdr->itt;
1479 resp_hdr->statsn = task->hdr->exp_statsn;
1480 resp_hdr->exp_cmdsn = cpu_to_be32(logout->exp_cmd_sn);
1481 resp_hdr->max_cmdsn = cpu_to_be32(logout->max_cmd_sn);
1482
1483 resp_hdr->t2wait = cpu_to_be32(logout->time_to_wait);
1484 resp_hdr->t2retain = cpu_to_be32(logout->time_to_retain);
1485
1486 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0);
1487
1488 bnx2i_conn->ep->state = EP_STATE_LOGOUT_RESP_RCVD;
1489 done:
1490 spin_unlock(&session->lock);
1491 return 0;
1492 }
1493
1494 /**
1495 * bnx2i_process_nopin_local_cmpl - this function handles iscsi nopin CQE
1496 * @session: iscsi session pointer
1497 * @bnx2i_conn: iscsi connection pointer
1498 * @cqe: pointer to newly DMA'ed CQE entry for processing
1499 *
1500 * process iSCSI NOPIN local completion CQE, frees IIT and command structures
1501 */
1502 static void bnx2i_process_nopin_local_cmpl(struct iscsi_session *session,
1503 struct bnx2i_conn *bnx2i_conn,
1504 struct cqe *cqe)
1505 {
1506 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data;
1507 struct bnx2i_nop_in_msg *nop_in;
1508 struct iscsi_task *task;
1509
1510 nop_in = (struct bnx2i_nop_in_msg *)cqe;
1511 spin_lock(&session->lock);
1512 task = iscsi_itt_to_task(conn,
1513 nop_in->itt & ISCSI_NOP_IN_MSG_INDEX);
1514 if (task)
1515 iscsi_put_task(task);
1516 spin_unlock(&session->lock);
1517 }
1518
1519 /**
1520 * bnx2i_unsol_pdu_adjust_rq - makes adjustments to RQ after unsol pdu is recvd
1521 * @conn: iscsi connection
1522 *
1523 * Firmware advances RQ producer index for every unsolicited PDU even if
1524 * payload data length is '0'. This function makes corresponding
1525 * adjustments on the driver side to match this f/w behavior
1526 */
1527 static void bnx2i_unsol_pdu_adjust_rq(struct bnx2i_conn *bnx2i_conn)
1528 {
1529 char dummy_rq_data[2];
1530 bnx2i_get_rq_buf(bnx2i_conn, dummy_rq_data, 1);
1531 bnx2i_put_rq_buf(bnx2i_conn, 1);
1532 }
1533
1534
1535 /**
1536 * bnx2i_process_nopin_mesg - this function handles iscsi nopin CQE
1537 * @session: iscsi session pointer
1538 * @bnx2i_conn: iscsi connection pointer
1539 * @cqe: pointer to newly DMA'ed CQE entry for processing
1540 *
1541 * process iSCSI target's proactive iSCSI NOPIN request
1542 */
1543 static int bnx2i_process_nopin_mesg(struct iscsi_session *session,
1544 struct bnx2i_conn *bnx2i_conn,
1545 struct cqe *cqe)
1546 {
1547 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data;
1548 struct iscsi_task *task;
1549 struct bnx2i_nop_in_msg *nop_in;
1550 struct iscsi_nopin *hdr;
1551 u32 itt;
1552 int tgt_async_nop = 0;
1553
1554 nop_in = (struct bnx2i_nop_in_msg *)cqe;
1555 itt = nop_in->itt & ISCSI_NOP_IN_MSG_INDEX;
1556
1557 spin_lock(&session->lock);
1558 hdr = (struct iscsi_nopin *)&bnx2i_conn->gen_pdu.resp_hdr;
1559 memset(hdr, 0, sizeof(struct iscsi_hdr));
1560 hdr->opcode = nop_in->op_code;
1561 hdr->max_cmdsn = cpu_to_be32(nop_in->max_cmd_sn);
1562 hdr->exp_cmdsn = cpu_to_be32(nop_in->exp_cmd_sn);
1563 hdr->ttt = cpu_to_be32(nop_in->ttt);
1564
1565 if (itt == (u16) RESERVED_ITT) {
1566 bnx2i_unsol_pdu_adjust_rq(bnx2i_conn);
1567 hdr->itt = RESERVED_ITT;
1568 tgt_async_nop = 1;
1569 goto done;
1570 }
1571
1572 /* this is a response to one of our nop-outs */
1573 task = iscsi_itt_to_task(conn, itt);
1574 if (task) {
1575 hdr->flags = ISCSI_FLAG_CMD_FINAL;
1576 hdr->itt = task->hdr->itt;
1577 hdr->ttt = cpu_to_be32(nop_in->ttt);
1578 memcpy(hdr->lun, nop_in->lun, 8);
1579 }
1580 done:
1581 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0);
1582 spin_unlock(&session->lock);
1583
1584 return tgt_async_nop;
1585 }
1586
1587
1588 /**
1589 * bnx2i_process_async_mesg - this function handles iscsi async message
1590 * @session: iscsi session pointer
1591 * @bnx2i_conn: iscsi connection pointer
1592 * @cqe: pointer to newly DMA'ed CQE entry for processing
1593 *
1594 * process iSCSI ASYNC Message
1595 */
1596 static void bnx2i_process_async_mesg(struct iscsi_session *session,
1597 struct bnx2i_conn *bnx2i_conn,
1598 struct cqe *cqe)
1599 {
1600 struct bnx2i_async_msg *async_cqe;
1601 struct iscsi_async *resp_hdr;
1602 u8 async_event;
1603
1604 bnx2i_unsol_pdu_adjust_rq(bnx2i_conn);
1605
1606 async_cqe = (struct bnx2i_async_msg *)cqe;
1607 async_event = async_cqe->async_event;
1608
1609 if (async_event == ISCSI_ASYNC_MSG_SCSI_EVENT) {
1610 iscsi_conn_printk(KERN_ALERT, bnx2i_conn->cls_conn->dd_data,
1611 "async: scsi events not supported\n");
1612 return;
1613 }
1614
1615 spin_lock(&session->lock);
1616 resp_hdr = (struct iscsi_async *) &bnx2i_conn->gen_pdu.resp_hdr;
1617 memset(resp_hdr, 0, sizeof(struct iscsi_hdr));
1618 resp_hdr->opcode = async_cqe->op_code;
1619 resp_hdr->flags = 0x80;
1620
1621 memcpy(resp_hdr->lun, async_cqe->lun, 8);
1622 resp_hdr->exp_cmdsn = cpu_to_be32(async_cqe->exp_cmd_sn);
1623 resp_hdr->max_cmdsn = cpu_to_be32(async_cqe->max_cmd_sn);
1624
1625 resp_hdr->async_event = async_cqe->async_event;
1626 resp_hdr->async_vcode = async_cqe->async_vcode;
1627
1628 resp_hdr->param1 = cpu_to_be16(async_cqe->param1);
1629 resp_hdr->param2 = cpu_to_be16(async_cqe->param2);
1630 resp_hdr->param3 = cpu_to_be16(async_cqe->param3);
1631
1632 __iscsi_complete_pdu(bnx2i_conn->cls_conn->dd_data,
1633 (struct iscsi_hdr *)resp_hdr, NULL, 0);
1634 spin_unlock(&session->lock);
1635 }
1636
1637
1638 /**
1639 * bnx2i_process_reject_mesg - process iscsi reject pdu
1640 * @session: iscsi session pointer
1641 * @bnx2i_conn: iscsi connection pointer
1642 * @cqe: pointer to newly DMA'ed CQE entry for processing
1643 *
1644 * process iSCSI REJECT message
1645 */
1646 static void bnx2i_process_reject_mesg(struct iscsi_session *session,
1647 struct bnx2i_conn *bnx2i_conn,
1648 struct cqe *cqe)
1649 {
1650 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data;
1651 struct bnx2i_reject_msg *reject;
1652 struct iscsi_reject *hdr;
1653
1654 reject = (struct bnx2i_reject_msg *) cqe;
1655 if (reject->data_length) {
1656 bnx2i_get_rq_buf(bnx2i_conn, conn->data, reject->data_length);
1657 bnx2i_put_rq_buf(bnx2i_conn, 1);
1658 } else
1659 bnx2i_unsol_pdu_adjust_rq(bnx2i_conn);
1660
1661 spin_lock(&session->lock);
1662 hdr = (struct iscsi_reject *) &bnx2i_conn->gen_pdu.resp_hdr;
1663 memset(hdr, 0, sizeof(struct iscsi_hdr));
1664 hdr->opcode = reject->op_code;
1665 hdr->reason = reject->reason;
1666 hton24(hdr->dlength, reject->data_length);
1667 hdr->max_cmdsn = cpu_to_be32(reject->max_cmd_sn);
1668 hdr->exp_cmdsn = cpu_to_be32(reject->exp_cmd_sn);
1669 hdr->ffffffff = cpu_to_be32(RESERVED_ITT);
1670 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, conn->data,
1671 reject->data_length);
1672 spin_unlock(&session->lock);
1673 }
1674
1675 /**
1676 * bnx2i_process_cmd_cleanup_resp - process scsi command clean-up completion
1677 * @session: iscsi session pointer
1678 * @bnx2i_conn: iscsi connection pointer
1679 * @cqe: pointer to newly DMA'ed CQE entry for processing
1680 *
1681 * process command cleanup response CQE during conn shutdown or error recovery
1682 */
1683 static void bnx2i_process_cmd_cleanup_resp(struct iscsi_session *session,
1684 struct bnx2i_conn *bnx2i_conn,
1685 struct cqe *cqe)
1686 {
1687 struct bnx2i_cleanup_response *cmd_clean_rsp;
1688 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data;
1689 struct iscsi_task *task;
1690
1691 cmd_clean_rsp = (struct bnx2i_cleanup_response *)cqe;
1692 spin_lock(&session->lock);
1693 task = iscsi_itt_to_task(conn,
1694 cmd_clean_rsp->itt & ISCSI_CLEANUP_RESPONSE_INDEX);
1695 if (!task)
1696 printk(KERN_ALERT "bnx2i: cmd clean ITT %x not active\n",
1697 cmd_clean_rsp->itt & ISCSI_CLEANUP_RESPONSE_INDEX);
1698 spin_unlock(&session->lock);
1699 complete(&bnx2i_conn->cmd_cleanup_cmpl);
1700 }
1701
1702
1703
1704 /**
1705 * bnx2i_process_new_cqes - process newly DMA'ed CQE's
1706 * @bnx2i_conn: iscsi connection
1707 *
1708 * this function is called by generic KCQ handler to process all pending CQE's
1709 */
1710 static void bnx2i_process_new_cqes(struct bnx2i_conn *bnx2i_conn)
1711 {
1712 struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data;
1713 struct iscsi_session *session = conn->session;
1714 struct qp_info *qp = &bnx2i_conn->ep->qp;
1715 struct bnx2i_nop_in_msg *nopin;
1716 int tgt_async_msg;
1717
1718 while (1) {
1719 nopin = (struct bnx2i_nop_in_msg *) qp->cq_cons_qe;
1720 if (nopin->cq_req_sn != qp->cqe_exp_seq_sn)
1721 break;
1722
1723 if (unlikely(test_bit(ISCSI_SUSPEND_BIT, &conn->suspend_rx)))
1724 break;
1725
1726 tgt_async_msg = 0;
1727
1728 switch (nopin->op_code) {
1729 case ISCSI_OP_SCSI_CMD_RSP:
1730 case ISCSI_OP_SCSI_DATA_IN:
1731 bnx2i_process_scsi_cmd_resp(session, bnx2i_conn,
1732 qp->cq_cons_qe);
1733 break;
1734 case ISCSI_OP_LOGIN_RSP:
1735 bnx2i_process_login_resp(session, bnx2i_conn,
1736 qp->cq_cons_qe);
1737 break;
1738 case ISCSI_OP_SCSI_TMFUNC_RSP:
1739 bnx2i_process_tmf_resp(session, bnx2i_conn,
1740 qp->cq_cons_qe);
1741 break;
1742 case ISCSI_OP_LOGOUT_RSP:
1743 bnx2i_process_logout_resp(session, bnx2i_conn,
1744 qp->cq_cons_qe);
1745 break;
1746 case ISCSI_OP_NOOP_IN:
1747 if (bnx2i_process_nopin_mesg(session, bnx2i_conn,
1748 qp->cq_cons_qe))
1749 tgt_async_msg = 1;
1750 break;
1751 case ISCSI_OPCODE_NOPOUT_LOCAL_COMPLETION:
1752 bnx2i_process_nopin_local_cmpl(session, bnx2i_conn,
1753 qp->cq_cons_qe);
1754 break;
1755 case ISCSI_OP_ASYNC_EVENT:
1756 bnx2i_process_async_mesg(session, bnx2i_conn,
1757 qp->cq_cons_qe);
1758 tgt_async_msg = 1;
1759 break;
1760 case ISCSI_OP_REJECT:
1761 bnx2i_process_reject_mesg(session, bnx2i_conn,
1762 qp->cq_cons_qe);
1763 break;
1764 case ISCSI_OPCODE_CLEANUP_RESPONSE:
1765 bnx2i_process_cmd_cleanup_resp(session, bnx2i_conn,
1766 qp->cq_cons_qe);
1767 break;
1768 default:
1769 printk(KERN_ALERT "bnx2i: unknown opcode 0x%x\n",
1770 nopin->op_code);
1771 }
1772
1773 if (!tgt_async_msg)
1774 bnx2i_conn->ep->num_active_cmds--;
1775
1776 /* clear out in production version only, till beta keep opcode
1777 * field intact, will be helpful in debugging (context dump)
1778 * nopin->op_code = 0;
1779 */
1780 qp->cqe_exp_seq_sn++;
1781 if (qp->cqe_exp_seq_sn == (qp->cqe_size * 2 + 1))
1782 qp->cqe_exp_seq_sn = ISCSI_INITIAL_SN;
1783
1784 if (qp->cq_cons_qe == qp->cq_last_qe) {
1785 qp->cq_cons_qe = qp->cq_first_qe;
1786 qp->cq_cons_idx = 0;
1787 } else {
1788 qp->cq_cons_qe++;
1789 qp->cq_cons_idx++;
1790 }
1791 }
1792 bnx2i_arm_cq_event_coalescing(bnx2i_conn->ep, CNIC_ARM_CQE);
1793 }
1794
1795 /**
1796 * bnx2i_fastpath_notification - process global event queue (KCQ)
1797 * @hba: adapter structure pointer
1798 * @new_cqe_kcqe: pointer to newly DMA'ed KCQE entry
1799 *
1800 * Fast path event notification handler, KCQ entry carries context id
1801 * of the connection that has 1 or more pending CQ entries
1802 */
1803 static void bnx2i_fastpath_notification(struct bnx2i_hba *hba,
1804 struct iscsi_kcqe *new_cqe_kcqe)
1805 {
1806 struct bnx2i_conn *conn;
1807 u32 iscsi_cid;
1808
1809 iscsi_cid = new_cqe_kcqe->iscsi_conn_id;
1810 conn = bnx2i_get_conn_from_id(hba, iscsi_cid);
1811
1812 if (!conn) {
1813 printk(KERN_ALERT "cid #%x not valid\n", iscsi_cid);
1814 return;
1815 }
1816 if (!conn->ep) {
1817 printk(KERN_ALERT "cid #%x - ep not bound\n", iscsi_cid);
1818 return;
1819 }
1820
1821 bnx2i_process_new_cqes(conn);
1822 }
1823
1824
1825 /**
1826 * bnx2i_process_update_conn_cmpl - process iscsi conn update completion KCQE
1827 * @hba: adapter structure pointer
1828 * @update_kcqe: kcqe pointer
1829 *
1830 * CONN_UPDATE completion handler, this completes iSCSI connection FFP migration
1831 */
1832 static void bnx2i_process_update_conn_cmpl(struct bnx2i_hba *hba,
1833 struct iscsi_kcqe *update_kcqe)
1834 {
1835 struct bnx2i_conn *conn;
1836 u32 iscsi_cid;
1837
1838 iscsi_cid = update_kcqe->iscsi_conn_id;
1839 conn = bnx2i_get_conn_from_id(hba, iscsi_cid);
1840
1841 if (!conn) {
1842 printk(KERN_ALERT "conn_update: cid %x not valid\n", iscsi_cid);
1843 return;
1844 }
1845 if (!conn->ep) {
1846 printk(KERN_ALERT "cid %x does not have ep bound\n", iscsi_cid);
1847 return;
1848 }
1849
1850 if (update_kcqe->completion_status) {
1851 printk(KERN_ALERT "request failed cid %x\n", iscsi_cid);
1852 conn->ep->state = EP_STATE_ULP_UPDATE_FAILED;
1853 } else
1854 conn->ep->state = EP_STATE_ULP_UPDATE_COMPL;
1855
1856 wake_up_interruptible(&conn->ep->ofld_wait);
1857 }
1858
1859
1860 /**
1861 * bnx2i_recovery_que_add_conn - add connection to recovery queue
1862 * @hba: adapter structure pointer
1863 * @bnx2i_conn: iscsi connection
1864 *
1865 * Add connection to recovery queue and schedule adapter eh worker
1866 */
1867 static void bnx2i_recovery_que_add_conn(struct bnx2i_hba *hba,
1868 struct bnx2i_conn *bnx2i_conn)
1869 {
1870 iscsi_conn_failure(bnx2i_conn->cls_conn->dd_data,
1871 ISCSI_ERR_CONN_FAILED);
1872 }
1873
1874
1875 /**
1876 * bnx2i_process_tcp_error - process error notification on a given connection
1877 *
1878 * @hba: adapter structure pointer
1879 * @tcp_err: tcp error kcqe pointer
1880 *
1881 * handles tcp level error notifications from FW.
1882 */
1883 static void bnx2i_process_tcp_error(struct bnx2i_hba *hba,
1884 struct iscsi_kcqe *tcp_err)
1885 {
1886 struct bnx2i_conn *bnx2i_conn;
1887 u32 iscsi_cid;
1888
1889 iscsi_cid = tcp_err->iscsi_conn_id;
1890 bnx2i_conn = bnx2i_get_conn_from_id(hba, iscsi_cid);
1891
1892 if (!bnx2i_conn) {
1893 printk(KERN_ALERT "bnx2i - cid 0x%x not valid\n", iscsi_cid);
1894 return;
1895 }
1896
1897 printk(KERN_ALERT "bnx2i - cid 0x%x had TCP errors, error code 0x%x\n",
1898 iscsi_cid, tcp_err->completion_status);
1899 bnx2i_recovery_que_add_conn(bnx2i_conn->hba, bnx2i_conn);
1900 }
1901
1902
1903 /**
1904 * bnx2i_process_iscsi_error - process error notification on a given connection
1905 * @hba: adapter structure pointer
1906 * @iscsi_err: iscsi error kcqe pointer
1907 *
1908 * handles iscsi error notifications from the FW. Firmware based in initial
1909 * handshake classifies iscsi protocol / TCP rfc violation into either
1910 * warning or error indications. If indication is of "Error" type, driver
1911 * will initiate session recovery for that connection/session. For
1912 * "Warning" type indication, driver will put out a system log message
1913 * (there will be only one message for each type for the life of the
1914 * session, this is to avoid un-necessarily overloading the system)
1915 */
1916 static void bnx2i_process_iscsi_error(struct bnx2i_hba *hba,
1917 struct iscsi_kcqe *iscsi_err)
1918 {
1919 struct bnx2i_conn *bnx2i_conn;
1920 u32 iscsi_cid;
1921 char warn_notice[] = "iscsi_warning";
1922 char error_notice[] = "iscsi_error";
1923 char additional_notice[64];
1924 char *message;
1925 int need_recovery;
1926 u64 err_mask64;
1927
1928 iscsi_cid = iscsi_err->iscsi_conn_id;
1929 bnx2i_conn = bnx2i_get_conn_from_id(hba, iscsi_cid);
1930 if (!bnx2i_conn) {
1931 printk(KERN_ALERT "bnx2i - cid 0x%x not valid\n", iscsi_cid);
1932 return;
1933 }
1934
1935 err_mask64 = (0x1ULL << iscsi_err->completion_status);
1936
1937 if (err_mask64 & iscsi_error_mask) {
1938 need_recovery = 0;
1939 message = warn_notice;
1940 } else {
1941 need_recovery = 1;
1942 message = error_notice;
1943 }
1944
1945 switch (iscsi_err->completion_status) {
1946 case ISCSI_KCQE_COMPLETION_STATUS_HDR_DIG_ERR:
1947 strcpy(additional_notice, "hdr digest err");
1948 break;
1949 case ISCSI_KCQE_COMPLETION_STATUS_DATA_DIG_ERR:
1950 strcpy(additional_notice, "data digest err");
1951 break;
1952 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_OPCODE:
1953 strcpy(additional_notice, "wrong opcode rcvd");
1954 break;
1955 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_AHS_LEN:
1956 strcpy(additional_notice, "AHS len > 0 rcvd");
1957 break;
1958 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_ITT:
1959 strcpy(additional_notice, "invalid ITT rcvd");
1960 break;
1961 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_STATSN:
1962 strcpy(additional_notice, "wrong StatSN rcvd");
1963 break;
1964 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_EXP_DATASN:
1965 strcpy(additional_notice, "wrong DataSN rcvd");
1966 break;
1967 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T:
1968 strcpy(additional_notice, "pend R2T violation");
1969 break;
1970 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_0:
1971 strcpy(additional_notice, "ERL0, UO");
1972 break;
1973 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_1:
1974 strcpy(additional_notice, "ERL0, U1");
1975 break;
1976 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_2:
1977 strcpy(additional_notice, "ERL0, U2");
1978 break;
1979 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_3:
1980 strcpy(additional_notice, "ERL0, U3");
1981 break;
1982 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_4:
1983 strcpy(additional_notice, "ERL0, U4");
1984 break;
1985 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_5:
1986 strcpy(additional_notice, "ERL0, U5");
1987 break;
1988 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_6:
1989 strcpy(additional_notice, "ERL0, U6");
1990 break;
1991 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REMAIN_RCV_LEN:
1992 strcpy(additional_notice, "invalid resi len");
1993 break;
1994 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_MAX_RCV_PDU_LEN:
1995 strcpy(additional_notice, "MRDSL violation");
1996 break;
1997 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_F_BIT_ZERO:
1998 strcpy(additional_notice, "F-bit not set");
1999 break;
2000 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_NOT_RSRV:
2001 strcpy(additional_notice, "invalid TTT");
2002 break;
2003 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DATASN:
2004 strcpy(additional_notice, "invalid DataSN");
2005 break;
2006 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REMAIN_BURST_LEN:
2007 strcpy(additional_notice, "burst len violation");
2008 break;
2009 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_BUFFER_OFF:
2010 strcpy(additional_notice, "buf offset violation");
2011 break;
2012 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_LUN:
2013 strcpy(additional_notice, "invalid LUN field");
2014 break;
2015 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_R2TSN:
2016 strcpy(additional_notice, "invalid R2TSN field");
2017 break;
2018 #define BNX2I_ERR_DESIRED_DATA_TRNS_LEN_0 \
2019 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_0
2020 case BNX2I_ERR_DESIRED_DATA_TRNS_LEN_0:
2021 strcpy(additional_notice, "invalid cmd len1");
2022 break;
2023 #define BNX2I_ERR_DESIRED_DATA_TRNS_LEN_1 \
2024 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_1
2025 case BNX2I_ERR_DESIRED_DATA_TRNS_LEN_1:
2026 strcpy(additional_notice, "invalid cmd len2");
2027 break;
2028 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T_EXCEED:
2029 strcpy(additional_notice,
2030 "pend r2t exceeds MaxOutstandingR2T value");
2031 break;
2032 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_IS_RSRV:
2033 strcpy(additional_notice, "TTT is rsvd");
2034 break;
2035 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_MAX_BURST_LEN:
2036 strcpy(additional_notice, "MBL violation");
2037 break;
2038 #define BNX2I_ERR_DATA_SEG_LEN_NOT_ZERO \
2039 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DATA_SEG_LEN_NOT_ZERO
2040 case BNX2I_ERR_DATA_SEG_LEN_NOT_ZERO:
2041 strcpy(additional_notice, "data seg len != 0");
2042 break;
2043 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REJECT_PDU_LEN:
2044 strcpy(additional_notice, "reject pdu len error");
2045 break;
2046 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_ASYNC_PDU_LEN:
2047 strcpy(additional_notice, "async pdu len error");
2048 break;
2049 case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_NOPIN_PDU_LEN:
2050 strcpy(additional_notice, "nopin pdu len error");
2051 break;
2052 #define BNX2_ERR_PEND_R2T_IN_CLEANUP \
2053 ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T_IN_CLEANUP
2054 case BNX2_ERR_PEND_R2T_IN_CLEANUP:
2055 strcpy(additional_notice, "pend r2t in cleanup");
2056 break;
2057
2058 case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_IP_FRAGMENT:
2059 strcpy(additional_notice, "IP fragments rcvd");
2060 break;
2061 case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_IP_OPTIONS:
2062 strcpy(additional_notice, "IP options error");
2063 break;
2064 case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_URGENT_FLAG:
2065 strcpy(additional_notice, "urgent flag error");
2066 break;
2067 default:
2068 printk(KERN_ALERT "iscsi_err - unknown err %x\n",
2069 iscsi_err->completion_status);
2070 }
2071
2072 if (need_recovery) {
2073 iscsi_conn_printk(KERN_ALERT,
2074 bnx2i_conn->cls_conn->dd_data,
2075 "bnx2i: %s - %s\n",
2076 message, additional_notice);
2077
2078 iscsi_conn_printk(KERN_ALERT,
2079 bnx2i_conn->cls_conn->dd_data,
2080 "conn_err - hostno %d conn %p, "
2081 "iscsi_cid %x cid %x\n",
2082 bnx2i_conn->hba->shost->host_no,
2083 bnx2i_conn, bnx2i_conn->ep->ep_iscsi_cid,
2084 bnx2i_conn->ep->ep_cid);
2085 bnx2i_recovery_que_add_conn(bnx2i_conn->hba, bnx2i_conn);
2086 } else
2087 if (!test_and_set_bit(iscsi_err->completion_status,
2088 (void *) &bnx2i_conn->violation_notified))
2089 iscsi_conn_printk(KERN_ALERT,
2090 bnx2i_conn->cls_conn->dd_data,
2091 "bnx2i: %s - %s\n",
2092 message, additional_notice);
2093 }
2094
2095
2096 /**
2097 * bnx2i_process_conn_destroy_cmpl - process iscsi conn destroy completion
2098 * @hba: adapter structure pointer
2099 * @conn_destroy: conn destroy kcqe pointer
2100 *
2101 * handles connection destroy completion request.
2102 */
2103 static void bnx2i_process_conn_destroy_cmpl(struct bnx2i_hba *hba,
2104 struct iscsi_kcqe *conn_destroy)
2105 {
2106 struct bnx2i_endpoint *ep;
2107
2108 ep = bnx2i_find_ep_in_destroy_list(hba, conn_destroy->iscsi_conn_id);
2109 if (!ep) {
2110 printk(KERN_ALERT "bnx2i_conn_destroy_cmpl: no pending "
2111 "offload request, unexpected complection\n");
2112 return;
2113 }
2114
2115 if (hba != ep->hba) {
2116 printk(KERN_ALERT "conn destroy- error hba mis-match\n");
2117 return;
2118 }
2119
2120 if (conn_destroy->completion_status) {
2121 printk(KERN_ALERT "conn_destroy_cmpl: op failed\n");
2122 ep->state = EP_STATE_CLEANUP_FAILED;
2123 } else
2124 ep->state = EP_STATE_CLEANUP_CMPL;
2125 wake_up_interruptible(&ep->ofld_wait);
2126 }
2127
2128
2129 /**
2130 * bnx2i_process_ofld_cmpl - process initial iscsi conn offload completion
2131 * @hba: adapter structure pointer
2132 * @ofld_kcqe: conn offload kcqe pointer
2133 *
2134 * handles initial connection offload completion, ep_connect() thread is
2135 * woken-up to continue with LLP connect process
2136 */
2137 static void bnx2i_process_ofld_cmpl(struct bnx2i_hba *hba,
2138 struct iscsi_kcqe *ofld_kcqe)
2139 {
2140 u32 cid_addr;
2141 struct bnx2i_endpoint *ep;
2142 u32 cid_num;
2143
2144 ep = bnx2i_find_ep_in_ofld_list(hba, ofld_kcqe->iscsi_conn_id);
2145 if (!ep) {
2146 printk(KERN_ALERT "ofld_cmpl: no pend offload request\n");
2147 return;
2148 }
2149
2150 if (hba != ep->hba) {
2151 printk(KERN_ALERT "ofld_cmpl: error hba mis-match\n");
2152 return;
2153 }
2154
2155 if (ofld_kcqe->completion_status) {
2156 if (ofld_kcqe->completion_status ==
2157 ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE)
2158 printk(KERN_ALERT "bnx2i: unable to allocate"
2159 " iSCSI context resources\n");
2160 ep->state = EP_STATE_OFLD_FAILED;
2161 } else {
2162 ep->state = EP_STATE_OFLD_COMPL;
2163 cid_addr = ofld_kcqe->iscsi_conn_context_id;
2164 cid_num = bnx2i_get_cid_num(ep);
2165 ep->ep_cid = cid_addr;
2166 ep->qp.ctx_base = NULL;
2167 }
2168 wake_up_interruptible(&ep->ofld_wait);
2169 }
2170
2171 /**
2172 * bnx2i_indicate_kcqe - process iscsi conn update completion KCQE
2173 * @hba: adapter structure pointer
2174 * @update_kcqe: kcqe pointer
2175 *
2176 * Generic KCQ event handler/dispatcher
2177 */
2178 static void bnx2i_indicate_kcqe(void *context, struct kcqe *kcqe[],
2179 u32 num_cqe)
2180 {
2181 struct bnx2i_hba *hba = context;
2182 int i = 0;
2183 struct iscsi_kcqe *ikcqe = NULL;
2184
2185 while (i < num_cqe) {
2186 ikcqe = (struct iscsi_kcqe *) kcqe[i++];
2187
2188 if (ikcqe->op_code ==
2189 ISCSI_KCQE_OPCODE_CQ_EVENT_NOTIFICATION)
2190 bnx2i_fastpath_notification(hba, ikcqe);
2191 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_OFFLOAD_CONN)
2192 bnx2i_process_ofld_cmpl(hba, ikcqe);
2193 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_UPDATE_CONN)
2194 bnx2i_process_update_conn_cmpl(hba, ikcqe);
2195 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_INIT) {
2196 if (ikcqe->completion_status !=
2197 ISCSI_KCQE_COMPLETION_STATUS_SUCCESS)
2198 bnx2i_iscsi_license_error(hba, ikcqe->\
2199 completion_status);
2200 else {
2201 set_bit(ADAPTER_STATE_UP, &hba->adapter_state);
2202 bnx2i_get_link_state(hba);
2203 printk(KERN_INFO "bnx2i [%.2x:%.2x.%.2x]: "
2204 "ISCSI_INIT passed\n",
2205 (u8)hba->pcidev->bus->number,
2206 hba->pci_devno,
2207 (u8)hba->pci_func);
2208
2209
2210 }
2211 } else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_DESTROY_CONN)
2212 bnx2i_process_conn_destroy_cmpl(hba, ikcqe);
2213 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_ISCSI_ERROR)
2214 bnx2i_process_iscsi_error(hba, ikcqe);
2215 else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_TCP_ERROR)
2216 bnx2i_process_tcp_error(hba, ikcqe);
2217 else
2218 printk(KERN_ALERT "bnx2i: unknown opcode 0x%x\n",
2219 ikcqe->op_code);
2220 }
2221 }
2222
2223
2224 /**
2225 * bnx2i_indicate_netevent - Generic netdev event handler
2226 * @context: adapter structure pointer
2227 * @event: event type
2228 *
2229 * Handles four netdev events, NETDEV_UP, NETDEV_DOWN,
2230 * NETDEV_GOING_DOWN and NETDEV_CHANGE
2231 */
2232 static void bnx2i_indicate_netevent(void *context, unsigned long event)
2233 {
2234 struct bnx2i_hba *hba = context;
2235
2236 switch (event) {
2237 case NETDEV_UP:
2238 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state))
2239 bnx2i_send_fw_iscsi_init_msg(hba);
2240 break;
2241 case NETDEV_DOWN:
2242 clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
2243 clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
2244 break;
2245 case NETDEV_GOING_DOWN:
2246 set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
2247 iscsi_host_for_each_session(hba->shost,
2248 bnx2i_drop_session);
2249 break;
2250 case NETDEV_CHANGE:
2251 bnx2i_get_link_state(hba);
2252 break;
2253 default:
2254 ;
2255 }
2256 }
2257
2258
2259 /**
2260 * bnx2i_cm_connect_cmpl - process iscsi conn establishment completion
2261 * @cm_sk: cnic sock structure pointer
2262 *
2263 * function callback exported via bnx2i - cnic driver interface to
2264 * indicate completion of option-2 TCP connect request.
2265 */
2266 static void bnx2i_cm_connect_cmpl(struct cnic_sock *cm_sk)
2267 {
2268 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context;
2269
2270 if (test_bit(ADAPTER_STATE_GOING_DOWN, &ep->hba->adapter_state))
2271 ep->state = EP_STATE_CONNECT_FAILED;
2272 else if (test_bit(SK_F_OFFLD_COMPLETE, &cm_sk->flags))
2273 ep->state = EP_STATE_CONNECT_COMPL;
2274 else
2275 ep->state = EP_STATE_CONNECT_FAILED;
2276
2277 wake_up_interruptible(&ep->ofld_wait);
2278 }
2279
2280
2281 /**
2282 * bnx2i_cm_close_cmpl - process tcp conn close completion
2283 * @cm_sk: cnic sock structure pointer
2284 *
2285 * function callback exported via bnx2i - cnic driver interface to
2286 * indicate completion of option-2 graceful TCP connect shutdown
2287 */
2288 static void bnx2i_cm_close_cmpl(struct cnic_sock *cm_sk)
2289 {
2290 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context;
2291
2292 ep->state = EP_STATE_DISCONN_COMPL;
2293 wake_up_interruptible(&ep->ofld_wait);
2294 }
2295
2296
2297 /**
2298 * bnx2i_cm_abort_cmpl - process abortive tcp conn teardown completion
2299 * @cm_sk: cnic sock structure pointer
2300 *
2301 * function callback exported via bnx2i - cnic driver interface to
2302 * indicate completion of option-2 abortive TCP connect termination
2303 */
2304 static void bnx2i_cm_abort_cmpl(struct cnic_sock *cm_sk)
2305 {
2306 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context;
2307
2308 ep->state = EP_STATE_DISCONN_COMPL;
2309 wake_up_interruptible(&ep->ofld_wait);
2310 }
2311
2312
2313 /**
2314 * bnx2i_cm_remote_close - process received TCP FIN
2315 * @hba: adapter structure pointer
2316 * @update_kcqe: kcqe pointer
2317 *
2318 * function callback exported via bnx2i - cnic driver interface to indicate
2319 * async TCP events such as FIN
2320 */
2321 static void bnx2i_cm_remote_close(struct cnic_sock *cm_sk)
2322 {
2323 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context;
2324
2325 ep->state = EP_STATE_TCP_FIN_RCVD;
2326 if (ep->conn)
2327 bnx2i_recovery_que_add_conn(ep->hba, ep->conn);
2328 }
2329
2330 /**
2331 * bnx2i_cm_remote_abort - process TCP RST and start conn cleanup
2332 * @hba: adapter structure pointer
2333 * @update_kcqe: kcqe pointer
2334 *
2335 * function callback exported via bnx2i - cnic driver interface to
2336 * indicate async TCP events (RST) sent by the peer.
2337 */
2338 static void bnx2i_cm_remote_abort(struct cnic_sock *cm_sk)
2339 {
2340 struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context;
2341
2342 ep->state = EP_STATE_TCP_RST_RCVD;
2343 if (ep->conn)
2344 bnx2i_recovery_que_add_conn(ep->hba, ep->conn);
2345 }
2346
2347
2348 static void bnx2i_send_nl_mesg(struct cnic_dev *dev, u32 msg_type,
2349 char *buf, u16 buflen)
2350 {
2351 struct bnx2i_hba *hba;
2352
2353 hba = bnx2i_find_hba_for_cnic(dev);
2354 if (!hba)
2355 return;
2356
2357 if (iscsi_offload_mesg(hba->shost, &bnx2i_iscsi_transport,
2358 msg_type, buf, buflen))
2359 printk(KERN_ALERT "bnx2i: private nl message send error\n");
2360
2361 }
2362
2363
2364 /**
2365 * bnx2i_cnic_cb - global template of bnx2i - cnic driver interface structure
2366 * carrying callback function pointers
2367 *
2368 */
2369 struct cnic_ulp_ops bnx2i_cnic_cb = {
2370 .cnic_init = bnx2i_ulp_init,
2371 .cnic_exit = bnx2i_ulp_exit,
2372 .cnic_start = bnx2i_start,
2373 .cnic_stop = bnx2i_stop,
2374 .indicate_kcqes = bnx2i_indicate_kcqe,
2375 .indicate_netevent = bnx2i_indicate_netevent,
2376 .cm_connect_complete = bnx2i_cm_connect_cmpl,
2377 .cm_close_complete = bnx2i_cm_close_cmpl,
2378 .cm_abort_complete = bnx2i_cm_abort_cmpl,
2379 .cm_remote_close = bnx2i_cm_remote_close,
2380 .cm_remote_abort = bnx2i_cm_remote_abort,
2381 .iscsi_nl_send_msg = bnx2i_send_nl_mesg,
2382 .owner = THIS_MODULE
2383 };
2384
2385
2386 /**
2387 * bnx2i_map_ep_dbell_regs - map connection doorbell registers
2388 * @ep: bnx2i endpoint
2389 *
2390 * maps connection's SQ and RQ doorbell registers, 5706/5708/5709 hosts these
2391 * register in BAR #0. Whereas in 57710 these register are accessed by
2392 * mapping BAR #1
2393 */
2394 int bnx2i_map_ep_dbell_regs(struct bnx2i_endpoint *ep)
2395 {
2396 u32 cid_num;
2397 u32 reg_off;
2398 u32 first_l4l5;
2399 u32 ctx_sz;
2400 u32 config2;
2401 resource_size_t reg_base;
2402
2403 cid_num = bnx2i_get_cid_num(ep);
2404
2405 if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) {
2406 reg_base = pci_resource_start(ep->hba->pcidev,
2407 BNX2X_DOORBELL_PCI_BAR);
2408 reg_off = PAGE_SIZE * (cid_num & 0x1FFFF) + DPM_TRIGER_TYPE;
2409 ep->qp.ctx_base = ioremap_nocache(reg_base + reg_off, 4);
2410 goto arm_cq;
2411 }
2412
2413 reg_base = ep->hba->netdev->base_addr;
2414 if ((test_bit(BNX2I_NX2_DEV_5709, &ep->hba->cnic_dev_type)) &&
2415 (ep->hba->mail_queue_access == BNX2I_MQ_BIN_MODE)) {
2416 config2 = REG_RD(ep->hba, BNX2_MQ_CONFIG2);
2417 first_l4l5 = config2 & BNX2_MQ_CONFIG2_FIRST_L4L5;
2418 ctx_sz = (config2 & BNX2_MQ_CONFIG2_CONT_SZ) >> 3;
2419 if (ctx_sz)
2420 reg_off = CTX_OFFSET + MAX_CID_CNT * MB_KERNEL_CTX_SIZE
2421 + BNX2I_570X_PAGE_SIZE_DEFAULT *
2422 (((cid_num - first_l4l5) / ctx_sz) + 256);
2423 else
2424 reg_off = CTX_OFFSET + (MB_KERNEL_CTX_SIZE * cid_num);
2425 } else
2426 /* 5709 device in normal node and 5706/5708 devices */
2427 reg_off = CTX_OFFSET + (MB_KERNEL_CTX_SIZE * cid_num);
2428
2429 ep->qp.ctx_base = ioremap_nocache(reg_base + reg_off,
2430 MB_KERNEL_CTX_SIZE);
2431 if (!ep->qp.ctx_base)
2432 return -ENOMEM;
2433
2434 arm_cq:
2435 bnx2i_arm_cq_event_coalescing(ep, CNIC_ARM_CQE);
2436 return 0;
2437 }
Tomato firmware and modifications.