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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 <scsi/scsi_tcq.h> | |
15 | #include <scsi/libiscsi.h> | |
16 | #include "bnx2i.h" | |
17 | ||
18 | /** | |
19 | * bnx2i_get_cid_num - get cid from ep | |
20 | * @ep: endpoint pointer | |
21 | * | |
22 | * Only applicable to 57710 family of devices | |
23 | */ | |
24 | static u32 bnx2i_get_cid_num(struct bnx2i_endpoint *ep) | |
25 | { | |
26 | u32 cid; | |
27 | ||
28 | if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) | |
29 | cid = ep->ep_cid; | |
30 | else | |
31 | cid = GET_CID_NUM(ep->ep_cid); | |
32 | return cid; | |
33 | } | |
34 | ||
35 | ||
36 | /** | |
37 | * bnx2i_adjust_qp_size - Adjust SQ/RQ/CQ size for 57710 device type | |
38 | * @hba: Adapter for which adjustments is to be made | |
39 | * | |
40 | * Only applicable to 57710 family of devices | |
41 | */ | |
42 | static void bnx2i_adjust_qp_size(struct bnx2i_hba *hba) | |
43 | { | |
44 | u32 num_elements_per_pg; | |
45 | ||
46 | if (test_bit(BNX2I_NX2_DEV_5706, &hba->cnic_dev_type) || | |
47 | test_bit(BNX2I_NX2_DEV_5708, &hba->cnic_dev_type) || | |
48 | test_bit(BNX2I_NX2_DEV_5709, &hba->cnic_dev_type)) { | |
49 | if (!is_power_of_2(hba->max_sqes)) | |
50 | hba->max_sqes = rounddown_pow_of_two(hba->max_sqes); | |
51 | ||
52 | if (!is_power_of_2(hba->max_rqes)) | |
53 | hba->max_rqes = rounddown_pow_of_two(hba->max_rqes); | |
54 | } | |
55 | ||
56 | /* Adjust each queue size if the user selection does not | |
57 | * yield integral num of page buffers | |
58 | */ | |
59 | /* adjust SQ */ | |
60 | num_elements_per_pg = PAGE_SIZE / BNX2I_SQ_WQE_SIZE; | |
61 | if (hba->max_sqes < num_elements_per_pg) | |
62 | hba->max_sqes = num_elements_per_pg; | |
63 | else if (hba->max_sqes % num_elements_per_pg) | |
64 | hba->max_sqes = (hba->max_sqes + num_elements_per_pg - 1) & | |
65 | ~(num_elements_per_pg - 1); | |
66 | ||
67 | /* adjust CQ */ | |
68 | num_elements_per_pg = PAGE_SIZE / BNX2I_CQE_SIZE; | |
69 | if (hba->max_cqes < num_elements_per_pg) | |
70 | hba->max_cqes = num_elements_per_pg; | |
71 | else if (hba->max_cqes % num_elements_per_pg) | |
72 | hba->max_cqes = (hba->max_cqes + num_elements_per_pg - 1) & | |
73 | ~(num_elements_per_pg - 1); | |
74 | ||
75 | /* adjust RQ */ | |
76 | num_elements_per_pg = PAGE_SIZE / BNX2I_RQ_WQE_SIZE; | |
77 | if (hba->max_rqes < num_elements_per_pg) | |
78 | hba->max_rqes = num_elements_per_pg; | |
79 | else if (hba->max_rqes % num_elements_per_pg) | |
80 | hba->max_rqes = (hba->max_rqes + num_elements_per_pg - 1) & | |
81 | ~(num_elements_per_pg - 1); | |
82 | } | |
83 | ||
84 | ||
85 | /** | |
86 | * bnx2i_get_link_state - get network interface link state | |
87 | * @hba: adapter instance pointer | |
88 | * | |
89 | * updates adapter structure flag based on netdev state | |
90 | */ | |
91 | static void bnx2i_get_link_state(struct bnx2i_hba *hba) | |
92 | { | |
93 | if (test_bit(__LINK_STATE_NOCARRIER, &hba->netdev->state)) | |
94 | set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); | |
95 | else | |
96 | clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); | |
97 | } | |
98 | ||
99 | ||
100 | /** | |
101 | * bnx2i_iscsi_license_error - displays iscsi license related error message | |
102 | * @hba: adapter instance pointer | |
103 | * @error_code: error classification | |
104 | * | |
105 | * Puts out an error log when driver is unable to offload iscsi connection | |
106 | * due to license restrictions | |
107 | */ | |
108 | static void bnx2i_iscsi_license_error(struct bnx2i_hba *hba, u32 error_code) | |
109 | { | |
110 | if (error_code == ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED) | |
111 | /* iSCSI offload not supported on this device */ | |
112 | printk(KERN_ERR "bnx2i: iSCSI not supported, dev=%s\n", | |
113 | hba->netdev->name); | |
114 | if (error_code == ISCSI_KCQE_COMPLETION_STATUS_LOM_ISCSI_NOT_ENABLED) | |
115 | /* iSCSI offload not supported on this LOM device */ | |
116 | printk(KERN_ERR "bnx2i: LOM is not enable to " | |
117 | "offload iSCSI connections, dev=%s\n", | |
118 | hba->netdev->name); | |
119 | set_bit(ADAPTER_STATE_INIT_FAILED, &hba->adapter_state); | |
120 | } | |
121 | ||
122 | ||
123 | /** | |
124 | * bnx2i_arm_cq_event_coalescing - arms CQ to enable EQ notification | |
125 | * @ep: endpoint (transport indentifier) structure | |
126 | * @action: action, ARM or DISARM. For now only ARM_CQE is used | |
127 | * | |
128 | * Arm'ing CQ will enable chip to generate global EQ events inorder to interrupt | |
129 | * the driver. EQ event is generated CQ index is hit or at least 1 CQ is | |
130 | * outstanding and on chip timer expires | |
131 | */ | |
132 | void bnx2i_arm_cq_event_coalescing(struct bnx2i_endpoint *ep, u8 action) | |
133 | { | |
134 | struct bnx2i_5771x_cq_db *cq_db; | |
135 | u16 cq_index; | |
136 | ||
137 | if (!test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) | |
138 | return; | |
139 | ||
140 | if (action == CNIC_ARM_CQE) { | |
141 | cq_index = ep->qp.cqe_exp_seq_sn + | |
142 | ep->num_active_cmds / event_coal_div; | |
143 | cq_index %= (ep->qp.cqe_size * 2 + 1); | |
144 | if (!cq_index) { | |
145 | cq_index = 1; | |
146 | cq_db = (struct bnx2i_5771x_cq_db *) | |
147 | ep->qp.cq_pgtbl_virt; | |
148 | cq_db->sqn[0] = cq_index; | |
149 | } | |
150 | } | |
151 | } | |
152 | ||
153 | ||
154 | /** | |
155 | * bnx2i_get_rq_buf - copy RQ buffer contents to driver buffer | |
156 | * @conn: iscsi connection on which RQ event occured | |
157 | * @ptr: driver buffer to which RQ buffer contents is to | |
158 | * be copied | |
159 | * @len: length of valid data inside RQ buf | |
160 | * | |
161 | * Copies RQ buffer contents from shared (DMA'able) memory region to | |
162 | * driver buffer. RQ is used to DMA unsolicitated iscsi pdu's and | |
163 | * scsi sense info | |
164 | */ | |
165 | void bnx2i_get_rq_buf(struct bnx2i_conn *bnx2i_conn, char *ptr, int len) | |
166 | { | |
167 | if (!bnx2i_conn->ep->qp.rqe_left) | |
168 | return; | |
169 | ||
170 | bnx2i_conn->ep->qp.rqe_left--; | |
171 | memcpy(ptr, (u8 *) bnx2i_conn->ep->qp.rq_cons_qe, len); | |
172 | if (bnx2i_conn->ep->qp.rq_cons_qe == bnx2i_conn->ep->qp.rq_last_qe) { | |
173 | bnx2i_conn->ep->qp.rq_cons_qe = bnx2i_conn->ep->qp.rq_first_qe; | |
174 | bnx2i_conn->ep->qp.rq_cons_idx = 0; | |
175 | } else { | |
176 | bnx2i_conn->ep->qp.rq_cons_qe++; | |
177 | bnx2i_conn->ep->qp.rq_cons_idx++; | |
178 | } | |
179 | } | |
180 | ||
181 | ||
182 | static void bnx2i_ring_577xx_doorbell(struct bnx2i_conn *conn) | |
183 | { | |
184 | struct bnx2i_5771x_dbell dbell; | |
185 | u32 msg; | |
186 | ||
187 | memset(&dbell, 0, sizeof(dbell)); | |
188 | dbell.dbell.header = (B577XX_ISCSI_CONNECTION_TYPE << | |
189 | B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT); | |
190 | msg = *((u32 *)&dbell); | |
191 | /* TODO : get doorbell register mapping */ | |
192 | writel(cpu_to_le32(msg), conn->ep->qp.ctx_base); | |
193 | } | |
194 | ||
195 | ||
196 | /** | |
197 | * bnx2i_put_rq_buf - Replenish RQ buffer, if required ring on chip doorbell | |
198 | * @conn: iscsi connection on which event to post | |
199 | * @count: number of RQ buffer being posted to chip | |
200 | * | |
201 | * No need to ring hardware doorbell for 57710 family of devices | |
202 | */ | |
203 | void bnx2i_put_rq_buf(struct bnx2i_conn *bnx2i_conn, int count) | |
204 | { | |
205 | struct bnx2i_5771x_sq_rq_db *rq_db; | |
206 | u16 hi_bit = (bnx2i_conn->ep->qp.rq_prod_idx & 0x8000); | |
207 | struct bnx2i_endpoint *ep = bnx2i_conn->ep; | |
208 | ||
209 | ep->qp.rqe_left += count; | |
210 | ep->qp.rq_prod_idx &= 0x7FFF; | |
211 | ep->qp.rq_prod_idx += count; | |
212 | ||
213 | if (ep->qp.rq_prod_idx > bnx2i_conn->hba->max_rqes) { | |
214 | ep->qp.rq_prod_idx %= bnx2i_conn->hba->max_rqes; | |
215 | if (!hi_bit) | |
216 | ep->qp.rq_prod_idx |= 0x8000; | |
217 | } else | |
218 | ep->qp.rq_prod_idx |= hi_bit; | |
219 | ||
220 | if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { | |
221 | rq_db = (struct bnx2i_5771x_sq_rq_db *) ep->qp.rq_pgtbl_virt; | |
222 | rq_db->prod_idx = ep->qp.rq_prod_idx; | |
223 | /* no need to ring hardware doorbell for 57710 */ | |
224 | } else { | |
225 | writew(ep->qp.rq_prod_idx, | |
226 | ep->qp.ctx_base + CNIC_RECV_DOORBELL); | |
227 | } | |
228 | mmiowb(); | |
229 | } | |
230 | ||
231 | ||
232 | /** | |
233 | * bnx2i_ring_sq_dbell - Ring SQ doorbell to wake-up the processing engine | |
234 | * @conn: iscsi connection to which new SQ entries belong | |
235 | * @count: number of SQ WQEs to post | |
236 | * | |
237 | * SQ DB is updated in host memory and TX Doorbell is rung for 57710 family | |
238 | * of devices. For 5706/5708/5709 new SQ WQE count is written into the | |
239 | * doorbell register | |
240 | */ | |
241 | static void bnx2i_ring_sq_dbell(struct bnx2i_conn *bnx2i_conn, int count) | |
242 | { | |
243 | struct bnx2i_5771x_sq_rq_db *sq_db; | |
244 | struct bnx2i_endpoint *ep = bnx2i_conn->ep; | |
245 | ||
246 | ep->num_active_cmds++; | |
247 | wmb(); /* flush SQ WQE memory before the doorbell is rung */ | |
248 | if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { | |
249 | sq_db = (struct bnx2i_5771x_sq_rq_db *) ep->qp.sq_pgtbl_virt; | |
250 | sq_db->prod_idx = ep->qp.sq_prod_idx; | |
251 | bnx2i_ring_577xx_doorbell(bnx2i_conn); | |
252 | } else | |
253 | writew(count, ep->qp.ctx_base + CNIC_SEND_DOORBELL); | |
254 | ||
255 | mmiowb(); /* flush posted PCI writes */ | |
256 | } | |
257 | ||
258 | ||
259 | /** | |
260 | * bnx2i_ring_dbell_update_sq_params - update SQ driver parameters | |
261 | * @conn: iscsi connection to which new SQ entries belong | |
262 | * @count: number of SQ WQEs to post | |
263 | * | |
264 | * this routine will update SQ driver parameters and ring the doorbell | |
265 | */ | |
266 | static void bnx2i_ring_dbell_update_sq_params(struct bnx2i_conn *bnx2i_conn, | |
267 | int count) | |
268 | { | |
269 | int tmp_cnt; | |
270 | ||
271 | if (count == 1) { | |
272 | if (bnx2i_conn->ep->qp.sq_prod_qe == | |
273 | bnx2i_conn->ep->qp.sq_last_qe) | |
274 | bnx2i_conn->ep->qp.sq_prod_qe = | |
275 | bnx2i_conn->ep->qp.sq_first_qe; | |
276 | else | |
277 | bnx2i_conn->ep->qp.sq_prod_qe++; | |
278 | } else { | |
279 | if ((bnx2i_conn->ep->qp.sq_prod_qe + count) <= | |
280 | bnx2i_conn->ep->qp.sq_last_qe) | |
281 | bnx2i_conn->ep->qp.sq_prod_qe += count; | |
282 | else { | |
283 | tmp_cnt = bnx2i_conn->ep->qp.sq_last_qe - | |
284 | bnx2i_conn->ep->qp.sq_prod_qe; | |
285 | bnx2i_conn->ep->qp.sq_prod_qe = | |
286 | &bnx2i_conn->ep->qp.sq_first_qe[count - | |
287 | (tmp_cnt + 1)]; | |
288 | } | |
289 | } | |
290 | bnx2i_conn->ep->qp.sq_prod_idx += count; | |
291 | /* Ring the doorbell */ | |
292 | bnx2i_ring_sq_dbell(bnx2i_conn, bnx2i_conn->ep->qp.sq_prod_idx); | |
293 | } | |
294 | ||
295 | ||
296 | /** | |
297 | * bnx2i_send_iscsi_login - post iSCSI login request MP WQE to hardware | |
298 | * @conn: iscsi connection | |
299 | * @cmd: driver command structure which is requesting | |
300 | * a WQE to sent to chip for further processing | |
301 | * | |
302 | * prepare and post an iSCSI Login request WQE to CNIC firmware | |
303 | */ | |
304 | int bnx2i_send_iscsi_login(struct bnx2i_conn *bnx2i_conn, | |
305 | struct iscsi_task *task) | |
306 | { | |
307 | struct bnx2i_cmd *bnx2i_cmd; | |
308 | struct bnx2i_login_request *login_wqe; | |
309 | struct iscsi_login *login_hdr; | |
310 | u32 dword; | |
311 | ||
312 | bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data; | |
313 | login_hdr = (struct iscsi_login *)task->hdr; | |
314 | login_wqe = (struct bnx2i_login_request *) | |
315 | bnx2i_conn->ep->qp.sq_prod_qe; | |
316 | ||
317 | login_wqe->op_code = login_hdr->opcode; | |
318 | login_wqe->op_attr = login_hdr->flags; | |
319 | login_wqe->version_max = login_hdr->max_version; | |
320 | login_wqe->version_min = login_hdr->min_version; | |
321 | login_wqe->data_length = ntoh24(login_hdr->dlength); | |
322 | login_wqe->isid_lo = *((u32 *) login_hdr->isid); | |
323 | login_wqe->isid_hi = *((u16 *) login_hdr->isid + 2); | |
324 | login_wqe->tsih = login_hdr->tsih; | |
325 | login_wqe->itt = task->itt | | |
326 | (ISCSI_TASK_TYPE_MPATH << ISCSI_LOGIN_REQUEST_TYPE_SHIFT); | |
327 | login_wqe->cid = login_hdr->cid; | |
328 | ||
329 | login_wqe->cmd_sn = be32_to_cpu(login_hdr->cmdsn); | |
330 | login_wqe->exp_stat_sn = be32_to_cpu(login_hdr->exp_statsn); | |
331 | ||
332 | login_wqe->resp_bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.resp_bd_dma; | |
333 | login_wqe->resp_bd_list_addr_hi = | |
334 | (u32) ((u64) bnx2i_conn->gen_pdu.resp_bd_dma >> 32); | |
335 | ||
336 | dword = ((1 << ISCSI_LOGIN_REQUEST_NUM_RESP_BDS_SHIFT) | | |
337 | (bnx2i_conn->gen_pdu.resp_buf_size << | |
338 | ISCSI_LOGIN_REQUEST_RESP_BUFFER_LENGTH_SHIFT)); | |
339 | login_wqe->resp_buffer = dword; | |
340 | login_wqe->flags = 0; | |
341 | login_wqe->bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.req_bd_dma; | |
342 | login_wqe->bd_list_addr_hi = | |
343 | (u32) ((u64) bnx2i_conn->gen_pdu.req_bd_dma >> 32); | |
344 | login_wqe->num_bds = 1; | |
345 | login_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ | |
346 | ||
347 | bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); | |
348 | return 0; | |
349 | } | |
350 | ||
351 | /** | |
352 | * bnx2i_send_iscsi_tmf - post iSCSI task management request MP WQE to hardware | |
353 | * @conn: iscsi connection | |
354 | * @mtask: driver command structure which is requesting | |
355 | * a WQE to sent to chip for further processing | |
356 | * | |
357 | * prepare and post an iSCSI Login request WQE to CNIC firmware | |
358 | */ | |
359 | int bnx2i_send_iscsi_tmf(struct bnx2i_conn *bnx2i_conn, | |
360 | struct iscsi_task *mtask) | |
361 | { | |
362 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
363 | struct iscsi_tm *tmfabort_hdr; | |
364 | struct scsi_cmnd *ref_sc; | |
365 | struct iscsi_task *ctask; | |
366 | struct bnx2i_cmd *bnx2i_cmd; | |
367 | struct bnx2i_tmf_request *tmfabort_wqe; | |
368 | u32 dword; | |
369 | ||
370 | bnx2i_cmd = (struct bnx2i_cmd *)mtask->dd_data; | |
371 | tmfabort_hdr = (struct iscsi_tm *)mtask->hdr; | |
372 | tmfabort_wqe = (struct bnx2i_tmf_request *) | |
373 | bnx2i_conn->ep->qp.sq_prod_qe; | |
374 | ||
375 | tmfabort_wqe->op_code = tmfabort_hdr->opcode; | |
376 | tmfabort_wqe->op_attr = 0; | |
377 | tmfabort_wqe->op_attr = | |
378 | ISCSI_TMF_REQUEST_ALWAYS_ONE | ISCSI_TM_FUNC_ABORT_TASK; | |
379 | tmfabort_wqe->lun[0] = be32_to_cpu(tmfabort_hdr->lun[0]); | |
380 | tmfabort_wqe->lun[1] = be32_to_cpu(tmfabort_hdr->lun[1]); | |
381 | ||
382 | tmfabort_wqe->itt = (mtask->itt | (ISCSI_TASK_TYPE_MPATH << 14)); | |
383 | tmfabort_wqe->reserved2 = 0; | |
384 | tmfabort_wqe->cmd_sn = be32_to_cpu(tmfabort_hdr->cmdsn); | |
385 | ||
386 | ctask = iscsi_itt_to_task(conn, tmfabort_hdr->rtt); | |
387 | if (!ctask || ctask->sc) | |
388 | /* | |
389 | * the iscsi layer must have completed the cmd while this | |
390 | * was starting up. | |
391 | */ | |
392 | return 0; | |
393 | ref_sc = ctask->sc; | |
394 | ||
395 | if (ref_sc->sc_data_direction == DMA_TO_DEVICE) | |
396 | dword = (ISCSI_TASK_TYPE_WRITE << ISCSI_CMD_REQUEST_TYPE_SHIFT); | |
397 | else | |
398 | dword = (ISCSI_TASK_TYPE_READ << ISCSI_CMD_REQUEST_TYPE_SHIFT); | |
399 | tmfabort_wqe->ref_itt = (dword | tmfabort_hdr->rtt); | |
400 | tmfabort_wqe->ref_cmd_sn = be32_to_cpu(tmfabort_hdr->refcmdsn); | |
401 | ||
402 | tmfabort_wqe->bd_list_addr_lo = (u32) bnx2i_conn->hba->mp_bd_dma; | |
403 | tmfabort_wqe->bd_list_addr_hi = (u32) | |
404 | ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); | |
405 | tmfabort_wqe->num_bds = 1; | |
406 | tmfabort_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ | |
407 | ||
408 | bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); | |
409 | return 0; | |
410 | } | |
411 | ||
412 | /** | |
413 | * bnx2i_send_iscsi_scsicmd - post iSCSI scsicmd request WQE to hardware | |
414 | * @conn: iscsi connection | |
415 | * @cmd: driver command structure which is requesting | |
416 | * a WQE to sent to chip for further processing | |
417 | * | |
418 | * prepare and post an iSCSI SCSI-CMD request WQE to CNIC firmware | |
419 | */ | |
420 | int bnx2i_send_iscsi_scsicmd(struct bnx2i_conn *bnx2i_conn, | |
421 | struct bnx2i_cmd *cmd) | |
422 | { | |
423 | struct bnx2i_cmd_request *scsi_cmd_wqe; | |
424 | ||
425 | scsi_cmd_wqe = (struct bnx2i_cmd_request *) | |
426 | bnx2i_conn->ep->qp.sq_prod_qe; | |
427 | memcpy(scsi_cmd_wqe, &cmd->req, sizeof(struct bnx2i_cmd_request)); | |
428 | scsi_cmd_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ | |
429 | ||
430 | bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); | |
431 | return 0; | |
432 | } | |
433 | ||
434 | /** | |
435 | * bnx2i_send_iscsi_nopout - post iSCSI NOPOUT request WQE to hardware | |
436 | * @conn: iscsi connection | |
437 | * @cmd: driver command structure which is requesting | |
438 | * a WQE to sent to chip for further processing | |
439 | * @ttt: TTT to be used when building pdu header | |
440 | * @datap: payload buffer pointer | |
441 | * @data_len: payload data length | |
442 | * @unsol: indicated whether nopout pdu is unsolicited pdu or | |
443 | * in response to target's NOPIN w/ TTT != FFFFFFFF | |
444 | * | |
445 | * prepare and post a nopout request WQE to CNIC firmware | |
446 | */ | |
447 | int bnx2i_send_iscsi_nopout(struct bnx2i_conn *bnx2i_conn, | |
448 | struct iscsi_task *task, u32 ttt, | |
449 | char *datap, int data_len, int unsol) | |
450 | { | |
451 | struct bnx2i_endpoint *ep = bnx2i_conn->ep; | |
452 | struct bnx2i_cmd *bnx2i_cmd; | |
453 | struct bnx2i_nop_out_request *nopout_wqe; | |
454 | struct iscsi_nopout *nopout_hdr; | |
455 | ||
456 | bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data; | |
457 | nopout_hdr = (struct iscsi_nopout *)task->hdr; | |
458 | nopout_wqe = (struct bnx2i_nop_out_request *)ep->qp.sq_prod_qe; | |
459 | nopout_wqe->op_code = nopout_hdr->opcode; | |
460 | nopout_wqe->op_attr = ISCSI_FLAG_CMD_FINAL; | |
461 | memcpy(nopout_wqe->lun, nopout_hdr->lun, 8); | |
462 | ||
463 | if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { | |
464 | u32 tmp = nopout_hdr->lun[0]; | |
465 | /* 57710 requires LUN field to be swapped */ | |
466 | nopout_hdr->lun[0] = nopout_hdr->lun[1]; | |
467 | nopout_hdr->lun[1] = tmp; | |
468 | } | |
469 | ||
470 | nopout_wqe->itt = ((u16)task->itt | | |
471 | (ISCSI_TASK_TYPE_MPATH << | |
472 | ISCSI_TMF_REQUEST_TYPE_SHIFT)); | |
473 | nopout_wqe->ttt = ttt; | |
474 | nopout_wqe->flags = 0; | |
475 | if (!unsol) | |
476 | nopout_wqe->flags = ISCSI_NOP_OUT_REQUEST_LOCAL_COMPLETION; | |
477 | else if (nopout_hdr->itt == RESERVED_ITT) | |
478 | nopout_wqe->flags = ISCSI_NOP_OUT_REQUEST_LOCAL_COMPLETION; | |
479 | ||
480 | nopout_wqe->cmd_sn = be32_to_cpu(nopout_hdr->cmdsn); | |
481 | nopout_wqe->data_length = data_len; | |
482 | if (data_len) { | |
483 | /* handle payload data, not required in first release */ | |
484 | printk(KERN_ALERT "NOPOUT: WARNING!! payload len != 0\n"); | |
485 | } else { | |
486 | nopout_wqe->bd_list_addr_lo = (u32) | |
487 | bnx2i_conn->hba->mp_bd_dma; | |
488 | nopout_wqe->bd_list_addr_hi = | |
489 | (u32) ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); | |
490 | nopout_wqe->num_bds = 1; | |
491 | } | |
492 | nopout_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_logout - post iSCSI logout 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 logout request WQE to CNIC firmware | |
506 | */ | |
507 | int bnx2i_send_iscsi_logout(struct bnx2i_conn *bnx2i_conn, | |
508 | struct iscsi_task *task) | |
509 | { | |
510 | struct bnx2i_cmd *bnx2i_cmd; | |
511 | struct bnx2i_logout_request *logout_wqe; | |
512 | struct iscsi_logout *logout_hdr; | |
513 | ||
514 | bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data; | |
515 | logout_hdr = (struct iscsi_logout *)task->hdr; | |
516 | ||
517 | logout_wqe = (struct bnx2i_logout_request *) | |
518 | bnx2i_conn->ep->qp.sq_prod_qe; | |
519 | memset(logout_wqe, 0x00, sizeof(struct bnx2i_logout_request)); | |
520 | ||
521 | logout_wqe->op_code = logout_hdr->opcode; | |
522 | logout_wqe->cmd_sn = be32_to_cpu(logout_hdr->cmdsn); | |
523 | logout_wqe->op_attr = | |
524 | logout_hdr->flags | ISCSI_LOGOUT_REQUEST_ALWAYS_ONE; | |
525 | logout_wqe->itt = ((u16)task->itt | | |
526 | (ISCSI_TASK_TYPE_MPATH << | |
527 | ISCSI_LOGOUT_REQUEST_TYPE_SHIFT)); | |
528 | logout_wqe->data_length = 0; | |
529 | logout_wqe->cid = 0; | |
530 | ||
531 | logout_wqe->bd_list_addr_lo = (u32) bnx2i_conn->hba->mp_bd_dma; | |
532 | logout_wqe->bd_list_addr_hi = (u32) | |
533 | ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); | |
534 | logout_wqe->num_bds = 1; | |
535 | logout_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ | |
536 | ||
537 | bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); | |
538 | return 0; | |
539 | } | |
540 | ||
541 | ||
542 | /** | |
543 | * bnx2i_update_iscsi_conn - post iSCSI logout request WQE to hardware | |
544 | * @conn: iscsi connection which requires iscsi parameter update | |
545 | * | |
546 | * sends down iSCSI Conn Update request to move iSCSI conn to FFP | |
547 | */ | |
548 | void bnx2i_update_iscsi_conn(struct iscsi_conn *conn) | |
549 | { | |
550 | struct bnx2i_conn *bnx2i_conn = conn->dd_data; | |
551 | struct bnx2i_hba *hba = bnx2i_conn->hba; | |
552 | struct kwqe *kwqe_arr[2]; | |
553 | struct iscsi_kwqe_conn_update *update_wqe; | |
554 | struct iscsi_kwqe_conn_update conn_update_kwqe; | |
555 | ||
556 | update_wqe = &conn_update_kwqe; | |
557 | ||
558 | update_wqe->hdr.op_code = ISCSI_KWQE_OPCODE_UPDATE_CONN; | |
559 | update_wqe->hdr.flags = | |
560 | (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); | |
561 | ||
562 | /* 5771x requires conn context id to be passed as is */ | |
563 | if (test_bit(BNX2I_NX2_DEV_57710, &bnx2i_conn->ep->hba->cnic_dev_type)) | |
564 | update_wqe->context_id = bnx2i_conn->ep->ep_cid; | |
565 | else | |
566 | update_wqe->context_id = (bnx2i_conn->ep->ep_cid >> 7); | |
567 | update_wqe->conn_flags = 0; | |
568 | if (conn->hdrdgst_en) | |
569 | update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_HEADER_DIGEST; | |
570 | if (conn->datadgst_en) | |
571 | update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_DATA_DIGEST; | |
572 | if (conn->session->initial_r2t_en) | |
573 | update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_INITIAL_R2T; | |
574 | if (conn->session->imm_data_en) | |
575 | update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_IMMEDIATE_DATA; | |
576 | ||
577 | update_wqe->max_send_pdu_length = conn->max_xmit_dlength; | |
578 | update_wqe->max_recv_pdu_length = conn->max_recv_dlength; | |
579 | update_wqe->first_burst_length = conn->session->first_burst; | |
580 | update_wqe->max_burst_length = conn->session->max_burst; | |
581 | update_wqe->exp_stat_sn = conn->exp_statsn; | |
582 | update_wqe->max_outstanding_r2ts = conn->session->max_r2t; | |
583 | update_wqe->session_error_recovery_level = conn->session->erl; | |
584 | iscsi_conn_printk(KERN_ALERT, conn, | |
585 | "bnx2i: conn update - MBL 0x%x FBL 0x%x" | |
586 | "MRDSL_I 0x%x MRDSL_T 0x%x \n", | |
587 | update_wqe->max_burst_length, | |
588 | update_wqe->first_burst_length, | |
589 | update_wqe->max_recv_pdu_length, | |
590 | update_wqe->max_send_pdu_length); | |
591 | ||
592 | kwqe_arr[0] = (struct kwqe *) update_wqe; | |
593 | if (hba->cnic && hba->cnic->submit_kwqes) | |
594 | hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 1); | |
595 | } | |
596 | ||
597 | ||
598 | /** | |
599 | * bnx2i_ep_ofld_timer - post iSCSI logout request WQE to hardware | |
600 | * @data: endpoint (transport handle) structure pointer | |
601 | * | |
602 | * routine to handle connection offload/destroy request timeout | |
603 | */ | |
604 | void bnx2i_ep_ofld_timer(unsigned long data) | |
605 | { | |
606 | struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) data; | |
607 | ||
608 | if (ep->state == EP_STATE_OFLD_START) { | |
609 | printk(KERN_ALERT "ofld_timer: CONN_OFLD timeout\n"); | |
610 | ep->state = EP_STATE_OFLD_FAILED; | |
611 | } else if (ep->state == EP_STATE_DISCONN_START) { | |
612 | printk(KERN_ALERT "ofld_timer: CONN_DISCON timeout\n"); | |
613 | ep->state = EP_STATE_DISCONN_TIMEDOUT; | |
614 | } else if (ep->state == EP_STATE_CLEANUP_START) { | |
615 | printk(KERN_ALERT "ofld_timer: CONN_CLEANUP timeout\n"); | |
616 | ep->state = EP_STATE_CLEANUP_FAILED; | |
617 | } | |
618 | ||
619 | wake_up_interruptible(&ep->ofld_wait); | |
620 | } | |
621 | ||
622 | ||
623 | static int bnx2i_power_of2(u32 val) | |
624 | { | |
625 | u32 power = 0; | |
626 | if (val & (val - 1)) | |
627 | return power; | |
628 | val--; | |
629 | while (val) { | |
630 | val = val >> 1; | |
631 | power++; | |
632 | } | |
633 | return power; | |
634 | } | |
635 | ||
636 | ||
637 | /** | |
638 | * bnx2i_send_cmd_cleanup_req - send iscsi cmd context clean-up request | |
639 | * @hba: adapter structure pointer | |
640 | * @cmd: driver command structure which is requesting | |
641 | * a WQE to sent to chip for further processing | |
642 | * | |
643 | * prepares and posts CONN_OFLD_REQ1/2 KWQE | |
644 | */ | |
645 | void bnx2i_send_cmd_cleanup_req(struct bnx2i_hba *hba, struct bnx2i_cmd *cmd) | |
646 | { | |
647 | struct bnx2i_cleanup_request *cmd_cleanup; | |
648 | ||
649 | cmd_cleanup = | |
650 | (struct bnx2i_cleanup_request *)cmd->conn->ep->qp.sq_prod_qe; | |
651 | memset(cmd_cleanup, 0x00, sizeof(struct bnx2i_cleanup_request)); | |
652 | ||
653 | cmd_cleanup->op_code = ISCSI_OPCODE_CLEANUP_REQUEST; | |
654 | cmd_cleanup->itt = cmd->req.itt; | |
655 | cmd_cleanup->cq_index = 0; /* CQ# used for completion, 5771x only */ | |
656 | ||
657 | bnx2i_ring_dbell_update_sq_params(cmd->conn, 1); | |
658 | } | |
659 | ||
660 | ||
661 | /** | |
662 | * bnx2i_send_conn_destroy - initiates iscsi connection teardown process | |
663 | * @hba: adapter structure pointer | |
664 | * @ep: endpoint (transport indentifier) structure | |
665 | * | |
666 | * this routine prepares and posts CONN_OFLD_REQ1/2 KWQE to initiate | |
667 | * iscsi connection context clean-up process | |
668 | */ | |
669 | void bnx2i_send_conn_destroy(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) | |
670 | { | |
671 | struct kwqe *kwqe_arr[2]; | |
672 | struct iscsi_kwqe_conn_destroy conn_cleanup; | |
673 | ||
674 | memset(&conn_cleanup, 0x00, sizeof(struct iscsi_kwqe_conn_destroy)); | |
675 | ||
676 | conn_cleanup.hdr.op_code = ISCSI_KWQE_OPCODE_DESTROY_CONN; | |
677 | conn_cleanup.hdr.flags = | |
678 | (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); | |
679 | /* 5771x requires conn context id to be passed as is */ | |
680 | if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) | |
681 | conn_cleanup.context_id = ep->ep_cid; | |
682 | else | |
683 | conn_cleanup.context_id = (ep->ep_cid >> 7); | |
684 | ||
685 | conn_cleanup.reserved0 = (u16)ep->ep_iscsi_cid; | |
686 | ||
687 | kwqe_arr[0] = (struct kwqe *) &conn_cleanup; | |
688 | if (hba->cnic && hba->cnic->submit_kwqes) | |
689 | hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 1); | |
690 | } | |
691 | ||
692 | ||
693 | /** | |
694 | * bnx2i_570x_send_conn_ofld_req - initiates iscsi conn context setup process | |
695 | * @hba: adapter structure pointer | |
696 | * @ep: endpoint (transport indentifier) structure | |
697 | * | |
698 | * 5706/5708/5709 specific - prepares and posts CONN_OFLD_REQ1/2 KWQE | |
699 | */ | |
700 | static void bnx2i_570x_send_conn_ofld_req(struct bnx2i_hba *hba, | |
701 | struct bnx2i_endpoint *ep) | |
702 | { | |
703 | struct kwqe *kwqe_arr[2]; | |
704 | struct iscsi_kwqe_conn_offload1 ofld_req1; | |
705 | struct iscsi_kwqe_conn_offload2 ofld_req2; | |
706 | dma_addr_t dma_addr; | |
707 | int num_kwqes = 2; | |
708 | u32 *ptbl; | |
709 | ||
710 | ofld_req1.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN1; | |
711 | ofld_req1.hdr.flags = | |
712 | (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); | |
713 | ||
714 | ofld_req1.iscsi_conn_id = (u16) ep->ep_iscsi_cid; | |
715 | ||
716 | dma_addr = ep->qp.sq_pgtbl_phys; | |
717 | ofld_req1.sq_page_table_addr_lo = (u32) dma_addr; | |
718 | ofld_req1.sq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); | |
719 | ||
720 | dma_addr = ep->qp.cq_pgtbl_phys; | |
721 | ofld_req1.cq_page_table_addr_lo = (u32) dma_addr; | |
722 | ofld_req1.cq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); | |
723 | ||
724 | ofld_req2.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN2; | |
725 | ofld_req2.hdr.flags = | |
726 | (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); | |
727 | ||
728 | dma_addr = ep->qp.rq_pgtbl_phys; | |
729 | ofld_req2.rq_page_table_addr_lo = (u32) dma_addr; | |
730 | ofld_req2.rq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); | |
731 | ||
732 | ptbl = (u32 *) ep->qp.sq_pgtbl_virt; | |
733 | ||
734 | ofld_req2.sq_first_pte.hi = *ptbl++; | |
735 | ofld_req2.sq_first_pte.lo = *ptbl; | |
736 | ||
737 | ptbl = (u32 *) ep->qp.cq_pgtbl_virt; | |
738 | ofld_req2.cq_first_pte.hi = *ptbl++; | |
739 | ofld_req2.cq_first_pte.lo = *ptbl; | |
740 | ||
741 | kwqe_arr[0] = (struct kwqe *) &ofld_req1; | |
742 | kwqe_arr[1] = (struct kwqe *) &ofld_req2; | |
743 | ofld_req2.num_additional_wqes = 0; | |
744 | ||
745 | if (hba->cnic && hba->cnic->submit_kwqes) | |
746 | hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes); | |
747 | } | |
748 | ||
749 | ||
750 | /** | |
751 | * bnx2i_5771x_send_conn_ofld_req - initiates iscsi connection context creation | |
752 | * @hba: adapter structure pointer | |
753 | * @ep: endpoint (transport indentifier) structure | |
754 | * | |
755 | * 57710 specific - prepares and posts CONN_OFLD_REQ1/2 KWQE | |
756 | */ | |
757 | static void bnx2i_5771x_send_conn_ofld_req(struct bnx2i_hba *hba, | |
758 | struct bnx2i_endpoint *ep) | |
759 | { | |
760 | struct kwqe *kwqe_arr[5]; | |
761 | struct iscsi_kwqe_conn_offload1 ofld_req1; | |
762 | struct iscsi_kwqe_conn_offload2 ofld_req2; | |
763 | struct iscsi_kwqe_conn_offload3 ofld_req3[1]; | |
764 | dma_addr_t dma_addr; | |
765 | int num_kwqes = 2; | |
766 | u32 *ptbl; | |
767 | ||
768 | ofld_req1.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN1; | |
769 | ofld_req1.hdr.flags = | |
770 | (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); | |
771 | ||
772 | ofld_req1.iscsi_conn_id = (u16) ep->ep_iscsi_cid; | |
773 | ||
774 | dma_addr = ep->qp.sq_pgtbl_phys + ISCSI_SQ_DB_SIZE; | |
775 | ofld_req1.sq_page_table_addr_lo = (u32) dma_addr; | |
776 | ofld_req1.sq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); | |
777 | ||
778 | dma_addr = ep->qp.cq_pgtbl_phys + ISCSI_CQ_DB_SIZE; | |
779 | ofld_req1.cq_page_table_addr_lo = (u32) dma_addr; | |
780 | ofld_req1.cq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); | |
781 | ||
782 | ofld_req2.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN2; | |
783 | ofld_req2.hdr.flags = | |
784 | (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); | |
785 | ||
786 | dma_addr = ep->qp.rq_pgtbl_phys + ISCSI_RQ_DB_SIZE; | |
787 | ofld_req2.rq_page_table_addr_lo = (u32) dma_addr; | |
788 | ofld_req2.rq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); | |
789 | ||
790 | ptbl = (u32 *)((u8 *)ep->qp.sq_pgtbl_virt + ISCSI_SQ_DB_SIZE); | |
791 | ofld_req2.sq_first_pte.hi = *ptbl++; | |
792 | ofld_req2.sq_first_pte.lo = *ptbl; | |
793 | ||
794 | ptbl = (u32 *)((u8 *)ep->qp.cq_pgtbl_virt + ISCSI_CQ_DB_SIZE); | |
795 | ofld_req2.cq_first_pte.hi = *ptbl++; | |
796 | ofld_req2.cq_first_pte.lo = *ptbl; | |
797 | ||
798 | kwqe_arr[0] = (struct kwqe *) &ofld_req1; | |
799 | kwqe_arr[1] = (struct kwqe *) &ofld_req2; | |
800 | ||
801 | ofld_req2.num_additional_wqes = 1; | |
802 | memset(ofld_req3, 0x00, sizeof(ofld_req3[0])); | |
803 | ptbl = (u32 *)((u8 *)ep->qp.rq_pgtbl_virt + ISCSI_RQ_DB_SIZE); | |
804 | ofld_req3[0].qp_first_pte[0].hi = *ptbl++; | |
805 | ofld_req3[0].qp_first_pte[0].lo = *ptbl; | |
806 | ||
807 | kwqe_arr[2] = (struct kwqe *) ofld_req3; | |
808 | /* need if we decide to go with multiple KCQE's per conn */ | |
809 | num_kwqes += 1; | |
810 | ||
811 | if (hba->cnic && hba->cnic->submit_kwqes) | |
812 | hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes); | |
813 | } | |
814 | ||
815 | /** | |
816 | * bnx2i_send_conn_ofld_req - initiates iscsi connection context setup process | |
817 | * | |
818 | * @hba: adapter structure pointer | |
819 | * @ep: endpoint (transport indentifier) structure | |
820 | * | |
821 | * this routine prepares and posts CONN_OFLD_REQ1/2 KWQE | |
822 | */ | |
823 | void bnx2i_send_conn_ofld_req(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) | |
824 | { | |
825 | if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type)) | |
826 | bnx2i_5771x_send_conn_ofld_req(hba, ep); | |
827 | else | |
828 | bnx2i_570x_send_conn_ofld_req(hba, ep); | |
829 | } | |
830 | ||
831 | ||
832 | /** | |
833 | * setup_qp_page_tables - iscsi QP page table setup function | |
834 | * @ep: endpoint (transport indentifier) structure | |
835 | * | |
836 | * Sets up page tables for SQ/RQ/CQ, 1G/sec (5706/5708/5709) devices requires | |
837 | * 64-bit address in big endian format. Whereas 10G/sec (57710) requires | |
838 | * PT in little endian format | |
839 | */ | |
840 | static void setup_qp_page_tables(struct bnx2i_endpoint *ep) | |
841 | { | |
842 | int num_pages; | |
843 | u32 *ptbl; | |
844 | dma_addr_t page; | |
845 | int cnic_dev_10g; | |
846 | ||
847 | if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) | |
848 | cnic_dev_10g = 1; | |
849 | else | |
850 | cnic_dev_10g = 0; | |
851 | ||
852 | /* SQ page table */ | |
853 | memset(ep->qp.sq_pgtbl_virt, 0, ep->qp.sq_pgtbl_size); | |
854 | num_pages = ep->qp.sq_mem_size / PAGE_SIZE; | |
855 | page = ep->qp.sq_phys; | |
856 | ||
857 | if (cnic_dev_10g) | |
858 | ptbl = (u32 *)((u8 *)ep->qp.sq_pgtbl_virt + ISCSI_SQ_DB_SIZE); | |
859 | else | |
860 | ptbl = (u32 *) ep->qp.sq_pgtbl_virt; | |
861 | while (num_pages--) { | |
862 | if (cnic_dev_10g) { | |
863 | /* PTE is written in little endian format for 57710 */ | |
864 | *ptbl = (u32) page; | |
865 | ptbl++; | |
866 | *ptbl = (u32) ((u64) page >> 32); | |
867 | ptbl++; | |
868 | page += PAGE_SIZE; | |
869 | } else { | |
870 | /* PTE is written in big endian format for | |
871 | * 5706/5708/5709 devices */ | |
872 | *ptbl = (u32) ((u64) page >> 32); | |
873 | ptbl++; | |
874 | *ptbl = (u32) page; | |
875 | ptbl++; | |
876 | page += PAGE_SIZE; | |
877 | } | |
878 | } | |
879 | ||
880 | /* RQ page table */ | |
881 | memset(ep->qp.rq_pgtbl_virt, 0, ep->qp.rq_pgtbl_size); | |
882 | num_pages = ep->qp.rq_mem_size / PAGE_SIZE; | |
883 | page = ep->qp.rq_phys; | |
884 | ||
885 | if (cnic_dev_10g) | |
886 | ptbl = (u32 *)((u8 *)ep->qp.rq_pgtbl_virt + ISCSI_RQ_DB_SIZE); | |
887 | else | |
888 | ptbl = (u32 *) ep->qp.rq_pgtbl_virt; | |
889 | while (num_pages--) { | |
890 | if (cnic_dev_10g) { | |
891 | /* PTE is written in little endian format for 57710 */ | |
892 | *ptbl = (u32) page; | |
893 | ptbl++; | |
894 | *ptbl = (u32) ((u64) page >> 32); | |
895 | ptbl++; | |
896 | page += PAGE_SIZE; | |
897 | } else { | |
898 | /* PTE is written in big endian format for | |
899 | * 5706/5708/5709 devices */ | |
900 | *ptbl = (u32) ((u64) page >> 32); | |
901 | ptbl++; | |
902 | *ptbl = (u32) page; | |
903 | ptbl++; | |
904 | page += PAGE_SIZE; | |
905 | } | |
906 | } | |
907 | ||
908 | /* CQ page table */ | |
909 | memset(ep->qp.cq_pgtbl_virt, 0, ep->qp.cq_pgtbl_size); | |
910 | num_pages = ep->qp.cq_mem_size / PAGE_SIZE; | |
911 | page = ep->qp.cq_phys; | |
912 | ||
913 | if (cnic_dev_10g) | |
914 | ptbl = (u32 *)((u8 *)ep->qp.cq_pgtbl_virt + ISCSI_CQ_DB_SIZE); | |
915 | else | |
916 | ptbl = (u32 *) ep->qp.cq_pgtbl_virt; | |
917 | while (num_pages--) { | |
918 | if (cnic_dev_10g) { | |
919 | /* PTE is written in little endian format for 57710 */ | |
920 | *ptbl = (u32) page; | |
921 | ptbl++; | |
922 | *ptbl = (u32) ((u64) page >> 32); | |
923 | ptbl++; | |
924 | page += PAGE_SIZE; | |
925 | } else { | |
926 | /* PTE is written in big endian format for | |
927 | * 5706/5708/5709 devices */ | |
928 | *ptbl = (u32) ((u64) page >> 32); | |
929 | ptbl++; | |
930 | *ptbl = (u32) page; | |
931 | ptbl++; | |
932 | page += PAGE_SIZE; | |
933 | } | |
934 | } | |
935 | } | |
936 | ||
937 | ||
938 | /** | |
939 | * bnx2i_alloc_qp_resc - allocates required resources for QP. | |
940 | * @hba: adapter structure pointer | |
941 | * @ep: endpoint (transport indentifier) structure | |
942 | * | |
943 | * Allocate QP (transport layer for iSCSI connection) resources, DMA'able | |
944 | * memory for SQ/RQ/CQ and page tables. EP structure elements such | |
945 | * as producer/consumer indexes/pointers, queue sizes and page table | |
946 | * contents are setup | |
947 | */ | |
948 | int bnx2i_alloc_qp_resc(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) | |
949 | { | |
950 | struct bnx2i_5771x_cq_db *cq_db; | |
951 | ||
952 | ep->hba = hba; | |
953 | ep->conn = NULL; | |
954 | ep->ep_cid = ep->ep_iscsi_cid = ep->ep_pg_cid = 0; | |
955 | ||
956 | /* Allocate page table memory for SQ which is page aligned */ | |
957 | ep->qp.sq_mem_size = hba->max_sqes * BNX2I_SQ_WQE_SIZE; | |
958 | ep->qp.sq_mem_size = | |
959 | (ep->qp.sq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; | |
960 | ep->qp.sq_pgtbl_size = | |
961 | (ep->qp.sq_mem_size / PAGE_SIZE) * sizeof(void *); | |
962 | ep->qp.sq_pgtbl_size = | |
963 | (ep->qp.sq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK; | |
964 | ||
965 | ep->qp.sq_pgtbl_virt = | |
966 | dma_alloc_coherent(&hba->pcidev->dev, ep->qp.sq_pgtbl_size, | |
967 | &ep->qp.sq_pgtbl_phys, GFP_KERNEL); | |
968 | if (!ep->qp.sq_pgtbl_virt) { | |
969 | printk(KERN_ALERT "bnx2i: unable to alloc SQ PT mem (%d)\n", | |
970 | ep->qp.sq_pgtbl_size); | |
971 | goto mem_alloc_err; | |
972 | } | |
973 | ||
974 | /* Allocate memory area for actual SQ element */ | |
975 | ep->qp.sq_virt = | |
976 | dma_alloc_coherent(&hba->pcidev->dev, ep->qp.sq_mem_size, | |
977 | &ep->qp.sq_phys, GFP_KERNEL); | |
978 | if (!ep->qp.sq_virt) { | |
979 | printk(KERN_ALERT "bnx2i: unable to alloc SQ BD memory %d\n", | |
980 | ep->qp.sq_mem_size); | |
981 | goto mem_alloc_err; | |
982 | } | |
983 | ||
984 | memset(ep->qp.sq_virt, 0x00, ep->qp.sq_mem_size); | |
985 | ep->qp.sq_first_qe = ep->qp.sq_virt; | |
986 | ep->qp.sq_prod_qe = ep->qp.sq_first_qe; | |
987 | ep->qp.sq_cons_qe = ep->qp.sq_first_qe; | |
988 | ep->qp.sq_last_qe = &ep->qp.sq_first_qe[hba->max_sqes - 1]; | |
989 | ep->qp.sq_prod_idx = 0; | |
990 | ep->qp.sq_cons_idx = 0; | |
991 | ep->qp.sqe_left = hba->max_sqes; | |
992 | ||
993 | /* Allocate page table memory for CQ which is page aligned */ | |
994 | ep->qp.cq_mem_size = hba->max_cqes * BNX2I_CQE_SIZE; | |
995 | ep->qp.cq_mem_size = | |
996 | (ep->qp.cq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; | |
997 | ep->qp.cq_pgtbl_size = | |
998 | (ep->qp.cq_mem_size / PAGE_SIZE) * sizeof(void *); | |
999 | ep->qp.cq_pgtbl_size = | |
1000 | (ep->qp.cq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK; | |
1001 | ||
1002 | ep->qp.cq_pgtbl_virt = | |
1003 | dma_alloc_coherent(&hba->pcidev->dev, ep->qp.cq_pgtbl_size, | |
1004 | &ep->qp.cq_pgtbl_phys, GFP_KERNEL); | |
1005 | if (!ep->qp.cq_pgtbl_virt) { | |
1006 | printk(KERN_ALERT "bnx2i: unable to alloc CQ PT memory %d\n", | |
1007 | ep->qp.cq_pgtbl_size); | |
1008 | goto mem_alloc_err; | |
1009 | } | |
1010 | ||
1011 | /* Allocate memory area for actual CQ element */ | |
1012 | ep->qp.cq_virt = | |
1013 | dma_alloc_coherent(&hba->pcidev->dev, ep->qp.cq_mem_size, | |
1014 | &ep->qp.cq_phys, GFP_KERNEL); | |
1015 | if (!ep->qp.cq_virt) { | |
1016 | printk(KERN_ALERT "bnx2i: unable to alloc CQ BD memory %d\n", | |
1017 | ep->qp.cq_mem_size); | |
1018 | goto mem_alloc_err; | |
1019 | } | |
1020 | memset(ep->qp.cq_virt, 0x00, ep->qp.cq_mem_size); | |
1021 | ||
1022 | ep->qp.cq_first_qe = ep->qp.cq_virt; | |
1023 | ep->qp.cq_prod_qe = ep->qp.cq_first_qe; | |
1024 | ep->qp.cq_cons_qe = ep->qp.cq_first_qe; | |
1025 | ep->qp.cq_last_qe = &ep->qp.cq_first_qe[hba->max_cqes - 1]; | |
1026 | ep->qp.cq_prod_idx = 0; | |
1027 | ep->qp.cq_cons_idx = 0; | |
1028 | ep->qp.cqe_left = hba->max_cqes; | |
1029 | ep->qp.cqe_exp_seq_sn = ISCSI_INITIAL_SN; | |
1030 | ep->qp.cqe_size = hba->max_cqes; | |
1031 | ||
1032 | /* Invalidate all EQ CQE index, req only for 57710 */ | |
1033 | cq_db = (struct bnx2i_5771x_cq_db *) ep->qp.cq_pgtbl_virt; | |
1034 | memset(cq_db->sqn, 0xFF, sizeof(cq_db->sqn[0]) * BNX2X_MAX_CQS); | |
1035 | ||
1036 | /* Allocate page table memory for RQ which is page aligned */ | |
1037 | ep->qp.rq_mem_size = hba->max_rqes * BNX2I_RQ_WQE_SIZE; | |
1038 | ep->qp.rq_mem_size = | |
1039 | (ep->qp.rq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; | |
1040 | ep->qp.rq_pgtbl_size = | |
1041 | (ep->qp.rq_mem_size / PAGE_SIZE) * sizeof(void *); | |
1042 | ep->qp.rq_pgtbl_size = | |
1043 | (ep->qp.rq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK; | |
1044 | ||
1045 | ep->qp.rq_pgtbl_virt = | |
1046 | dma_alloc_coherent(&hba->pcidev->dev, ep->qp.rq_pgtbl_size, | |
1047 | &ep->qp.rq_pgtbl_phys, GFP_KERNEL); | |
1048 | if (!ep->qp.rq_pgtbl_virt) { | |
1049 | printk(KERN_ALERT "bnx2i: unable to alloc RQ PT mem %d\n", | |
1050 | ep->qp.rq_pgtbl_size); | |
1051 | goto mem_alloc_err; | |
1052 | } | |
1053 | ||
1054 | /* Allocate memory area for actual RQ element */ | |
1055 | ep->qp.rq_virt = | |
1056 | dma_alloc_coherent(&hba->pcidev->dev, ep->qp.rq_mem_size, | |
1057 | &ep->qp.rq_phys, GFP_KERNEL); | |
1058 | if (!ep->qp.rq_virt) { | |
1059 | printk(KERN_ALERT "bnx2i: unable to alloc RQ BD memory %d\n", | |
1060 | ep->qp.rq_mem_size); | |
1061 | goto mem_alloc_err; | |
1062 | } | |
1063 | ||
1064 | ep->qp.rq_first_qe = ep->qp.rq_virt; | |
1065 | ep->qp.rq_prod_qe = ep->qp.rq_first_qe; | |
1066 | ep->qp.rq_cons_qe = ep->qp.rq_first_qe; | |
1067 | ep->qp.rq_last_qe = &ep->qp.rq_first_qe[hba->max_rqes - 1]; | |
1068 | ep->qp.rq_prod_idx = 0x8000; | |
1069 | ep->qp.rq_cons_idx = 0; | |
1070 | ep->qp.rqe_left = hba->max_rqes; | |
1071 | ||
1072 | setup_qp_page_tables(ep); | |
1073 | ||
1074 | return 0; | |
1075 | ||
1076 | mem_alloc_err: | |
1077 | bnx2i_free_qp_resc(hba, ep); | |
1078 | return -ENOMEM; | |
1079 | } | |
1080 | ||
1081 | ||
1082 | ||
1083 | /** | |
1084 | * bnx2i_free_qp_resc - free memory resources held by QP | |
1085 | * @hba: adapter structure pointer | |
1086 | * @ep: endpoint (transport indentifier) structure | |
1087 | * | |
1088 | * Free QP resources - SQ/RQ/CQ memory and page tables. | |
1089 | */ | |
1090 | void bnx2i_free_qp_resc(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) | |
1091 | { | |
1092 | if (ep->qp.ctx_base) { | |
1093 | iounmap(ep->qp.ctx_base); | |
1094 | ep->qp.ctx_base = NULL; | |
1095 | } | |
1096 | /* Free SQ mem */ | |
1097 | if (ep->qp.sq_pgtbl_virt) { | |
1098 | dma_free_coherent(&hba->pcidev->dev, ep->qp.sq_pgtbl_size, | |
1099 | ep->qp.sq_pgtbl_virt, ep->qp.sq_pgtbl_phys); | |
1100 | ep->qp.sq_pgtbl_virt = NULL; | |
1101 | ep->qp.sq_pgtbl_phys = 0; | |
1102 | } | |
1103 | if (ep->qp.sq_virt) { | |
1104 | dma_free_coherent(&hba->pcidev->dev, ep->qp.sq_mem_size, | |
1105 | ep->qp.sq_virt, ep->qp.sq_phys); | |
1106 | ep->qp.sq_virt = NULL; | |
1107 | ep->qp.sq_phys = 0; | |
1108 | } | |
1109 | ||
1110 | /* Free RQ mem */ | |
1111 | if (ep->qp.rq_pgtbl_virt) { | |
1112 | dma_free_coherent(&hba->pcidev->dev, ep->qp.rq_pgtbl_size, | |
1113 | ep->qp.rq_pgtbl_virt, ep->qp.rq_pgtbl_phys); | |
1114 | ep->qp.rq_pgtbl_virt = NULL; | |
1115 | ep->qp.rq_pgtbl_phys = 0; | |
1116 | } | |
1117 | if (ep->qp.rq_virt) { | |
1118 | dma_free_coherent(&hba->pcidev->dev, ep->qp.rq_mem_size, | |
1119 | ep->qp.rq_virt, ep->qp.rq_phys); | |
1120 | ep->qp.rq_virt = NULL; | |
1121 | ep->qp.rq_phys = 0; | |
1122 | } | |
1123 | ||
1124 | /* Free CQ mem */ | |
1125 | if (ep->qp.cq_pgtbl_virt) { | |
1126 | dma_free_coherent(&hba->pcidev->dev, ep->qp.cq_pgtbl_size, | |
1127 | ep->qp.cq_pgtbl_virt, ep->qp.cq_pgtbl_phys); | |
1128 | ep->qp.cq_pgtbl_virt = NULL; | |
1129 | ep->qp.cq_pgtbl_phys = 0; | |
1130 | } | |
1131 | if (ep->qp.cq_virt) { | |
1132 | dma_free_coherent(&hba->pcidev->dev, ep->qp.cq_mem_size, | |
1133 | ep->qp.cq_virt, ep->qp.cq_phys); | |
1134 | ep->qp.cq_virt = NULL; | |
1135 | ep->qp.cq_phys = 0; | |
1136 | } | |
1137 | } | |
1138 | ||
1139 | ||
1140 | /** | |
1141 | * bnx2i_send_fw_iscsi_init_msg - initiates initial handshake with iscsi f/w | |
1142 | * @hba: adapter structure pointer | |
1143 | * | |
1144 | * Send down iscsi_init KWQEs which initiates the initial handshake with the f/w | |
1145 | * This results in iSCSi support validation and on-chip context manager | |
1146 | * initialization. Firmware completes this handshake with a CQE carrying | |
1147 | * the result of iscsi support validation. Parameter carried by | |
1148 | * iscsi init request determines the number of offloaded connection and | |
1149 | * tolerance level for iscsi protocol violation this hba/chip can support | |
1150 | */ | |
1151 | int bnx2i_send_fw_iscsi_init_msg(struct bnx2i_hba *hba) | |
1152 | { | |
1153 | struct kwqe *kwqe_arr[3]; | |
1154 | struct iscsi_kwqe_init1 iscsi_init; | |
1155 | struct iscsi_kwqe_init2 iscsi_init2; | |
1156 | int rc = 0; | |
1157 | u64 mask64; | |
1158 | ||
1159 | bnx2i_adjust_qp_size(hba); | |
1160 | ||
1161 | iscsi_init.flags = | |
1162 | ISCSI_PAGE_SIZE_4K << ISCSI_KWQE_INIT1_PAGE_SIZE_SHIFT; | |
1163 | if (en_tcp_dack) | |
1164 | iscsi_init.flags |= ISCSI_KWQE_INIT1_DELAYED_ACK_ENABLE; | |
1165 | iscsi_init.reserved0 = 0; | |
1166 | iscsi_init.num_cqs = 1; | |
1167 | iscsi_init.hdr.op_code = ISCSI_KWQE_OPCODE_INIT1; | |
1168 | iscsi_init.hdr.flags = | |
1169 | (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); | |
1170 | ||
1171 | iscsi_init.dummy_buffer_addr_lo = (u32) hba->dummy_buf_dma; | |
1172 | iscsi_init.dummy_buffer_addr_hi = | |
1173 | (u32) ((u64) hba->dummy_buf_dma >> 32); | |
1174 | ||
1175 | hba->ctx_ccell_tasks = | |
1176 | ((hba->num_ccell & 0xFFFF) | (hba->max_sqes << 16)); | |
1177 | iscsi_init.num_ccells_per_conn = hba->num_ccell; | |
1178 | iscsi_init.num_tasks_per_conn = hba->max_sqes; | |
1179 | iscsi_init.sq_wqes_per_page = PAGE_SIZE / BNX2I_SQ_WQE_SIZE; | |
1180 | iscsi_init.sq_num_wqes = hba->max_sqes; | |
1181 | iscsi_init.cq_log_wqes_per_page = | |
1182 | (u8) bnx2i_power_of2(PAGE_SIZE / BNX2I_CQE_SIZE); | |
1183 | iscsi_init.cq_num_wqes = hba->max_cqes; | |
1184 | iscsi_init.cq_num_pages = (hba->max_cqes * BNX2I_CQE_SIZE + | |
1185 | (PAGE_SIZE - 1)) / PAGE_SIZE; | |
1186 | iscsi_init.sq_num_pages = (hba->max_sqes * BNX2I_SQ_WQE_SIZE + | |
1187 | (PAGE_SIZE - 1)) / PAGE_SIZE; | |
1188 | iscsi_init.rq_buffer_size = BNX2I_RQ_WQE_SIZE; | |
1189 | iscsi_init.rq_num_wqes = hba->max_rqes; | |
1190 | ||
1191 | ||
1192 | iscsi_init2.hdr.op_code = ISCSI_KWQE_OPCODE_INIT2; | |
1193 | iscsi_init2.hdr.flags = | |
1194 | (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); | |
1195 | iscsi_init2.max_cq_sqn = hba->max_cqes * 2 + 1; | |
1196 | mask64 = 0x0ULL; | |
1197 | mask64 |= ( | |
1198 | /* CISCO MDS */ | |
1199 | (1UL << | |
1200 | ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_NOT_RSRV) | | |
1201 | /* HP MSA1510i */ | |
1202 | (1UL << | |
1203 | ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_EXP_DATASN) | | |
1204 | /* EMC */ | |
1205 | (1ULL << ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_LUN)); | |
1206 | if (error_mask1) | |
1207 | iscsi_init2.error_bit_map[0] = error_mask1; | |
1208 | else | |
1209 | iscsi_init2.error_bit_map[0] = (u32) mask64; | |
1210 | ||
1211 | if (error_mask2) | |
1212 | iscsi_init2.error_bit_map[1] = error_mask2; | |
1213 | else | |
1214 | iscsi_init2.error_bit_map[1] = (u32) (mask64 >> 32); | |
1215 | ||
1216 | iscsi_error_mask = mask64; | |
1217 | ||
1218 | kwqe_arr[0] = (struct kwqe *) &iscsi_init; | |
1219 | kwqe_arr[1] = (struct kwqe *) &iscsi_init2; | |
1220 | ||
1221 | if (hba->cnic && hba->cnic->submit_kwqes) | |
1222 | rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 2); | |
1223 | return rc; | |
1224 | } | |
1225 | ||
1226 | ||
1227 | /** | |
1228 | * bnx2i_process_scsi_cmd_resp - this function handles scsi cmd completion. | |
1229 | * @conn: iscsi connection | |
1230 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1231 | * | |
1232 | * process SCSI CMD Response CQE & complete the request to SCSI-ML | |
1233 | */ | |
1234 | static int bnx2i_process_scsi_cmd_resp(struct iscsi_session *session, | |
1235 | struct bnx2i_conn *bnx2i_conn, | |
1236 | struct cqe *cqe) | |
1237 | { | |
1238 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1239 | struct bnx2i_cmd_response *resp_cqe; | |
1240 | struct bnx2i_cmd *bnx2i_cmd; | |
1241 | struct iscsi_task *task; | |
1242 | struct iscsi_cmd_rsp *hdr; | |
1243 | u32 datalen = 0; | |
1244 | ||
1245 | resp_cqe = (struct bnx2i_cmd_response *)cqe; | |
1246 | spin_lock(&session->lock); | |
1247 | task = iscsi_itt_to_task(conn, | |
1248 | resp_cqe->itt & ISCSI_CMD_RESPONSE_INDEX); | |
1249 | if (!task) | |
1250 | goto fail; | |
1251 | ||
1252 | bnx2i_cmd = task->dd_data; | |
1253 | ||
1254 | if (bnx2i_cmd->req.op_attr & ISCSI_CMD_REQUEST_READ) { | |
1255 | conn->datain_pdus_cnt += | |
1256 | resp_cqe->task_stat.read_stat.num_data_outs; | |
1257 | conn->rxdata_octets += | |
1258 | bnx2i_cmd->req.total_data_transfer_length; | |
1259 | } else { | |
1260 | conn->dataout_pdus_cnt += | |
1261 | resp_cqe->task_stat.read_stat.num_data_outs; | |
1262 | conn->r2t_pdus_cnt += | |
1263 | resp_cqe->task_stat.read_stat.num_r2ts; | |
1264 | conn->txdata_octets += | |
1265 | bnx2i_cmd->req.total_data_transfer_length; | |
1266 | } | |
1267 | bnx2i_iscsi_unmap_sg_list(bnx2i_cmd); | |
1268 | ||
1269 | hdr = (struct iscsi_cmd_rsp *)task->hdr; | |
1270 | resp_cqe = (struct bnx2i_cmd_response *)cqe; | |
1271 | hdr->opcode = resp_cqe->op_code; | |
1272 | hdr->max_cmdsn = cpu_to_be32(resp_cqe->max_cmd_sn); | |
1273 | hdr->exp_cmdsn = cpu_to_be32(resp_cqe->exp_cmd_sn); | |
1274 | hdr->response = resp_cqe->response; | |
1275 | hdr->cmd_status = resp_cqe->status; | |
1276 | hdr->flags = resp_cqe->response_flags; | |
1277 | hdr->residual_count = cpu_to_be32(resp_cqe->residual_count); | |
1278 | ||
1279 | if (resp_cqe->op_code == ISCSI_OP_SCSI_DATA_IN) | |
1280 | goto done; | |
1281 | ||
1282 | if (resp_cqe->status == SAM_STAT_CHECK_CONDITION) { | |
1283 | datalen = resp_cqe->data_length; | |
1284 | if (datalen < 2) | |
1285 | goto done; | |
1286 | ||
1287 | if (datalen > BNX2I_RQ_WQE_SIZE) { | |
1288 | iscsi_conn_printk(KERN_ERR, conn, | |
1289 | "sense data len %d > RQ sz\n", | |
1290 | datalen); | |
1291 | datalen = BNX2I_RQ_WQE_SIZE; | |
1292 | } else if (datalen > ISCSI_DEF_MAX_RECV_SEG_LEN) { | |
1293 | iscsi_conn_printk(KERN_ERR, conn, | |
1294 | "sense data len %d > conn data\n", | |
1295 | datalen); | |
1296 | datalen = ISCSI_DEF_MAX_RECV_SEG_LEN; | |
1297 | } | |
1298 | ||
1299 | bnx2i_get_rq_buf(bnx2i_cmd->conn, conn->data, datalen); | |
1300 | bnx2i_put_rq_buf(bnx2i_cmd->conn, 1); | |
1301 | } | |
1302 | ||
1303 | done: | |
1304 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, | |
1305 | conn->data, datalen); | |
1306 | fail: | |
1307 | spin_unlock(&session->lock); | |
1308 | return 0; | |
1309 | } | |
1310 | ||
1311 | ||
1312 | /** | |
1313 | * bnx2i_process_login_resp - this function handles iscsi login response | |
1314 | * @session: iscsi session pointer | |
1315 | * @bnx2i_conn: iscsi connection pointer | |
1316 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1317 | * | |
1318 | * process Login Response CQE & complete it to open-iscsi user daemon | |
1319 | */ | |
1320 | static int bnx2i_process_login_resp(struct iscsi_session *session, | |
1321 | struct bnx2i_conn *bnx2i_conn, | |
1322 | struct cqe *cqe) | |
1323 | { | |
1324 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1325 | struct iscsi_task *task; | |
1326 | struct bnx2i_login_response *login; | |
1327 | struct iscsi_login_rsp *resp_hdr; | |
1328 | int pld_len; | |
1329 | int pad_len; | |
1330 | ||
1331 | login = (struct bnx2i_login_response *) cqe; | |
1332 | spin_lock(&session->lock); | |
1333 | task = iscsi_itt_to_task(conn, | |
1334 | login->itt & ISCSI_LOGIN_RESPONSE_INDEX); | |
1335 | if (!task) | |
1336 | goto done; | |
1337 | ||
1338 | resp_hdr = (struct iscsi_login_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; | |
1339 | memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); | |
1340 | resp_hdr->opcode = login->op_code; | |
1341 | resp_hdr->flags = login->response_flags; | |
1342 | resp_hdr->max_version = login->version_max; | |
a419aef8 | 1343 | resp_hdr->active_version = login->version_active; |
cf4e6363 MC |
1344 | resp_hdr->hlength = 0; |
1345 | ||
1346 | hton24(resp_hdr->dlength, login->data_length); | |
1347 | memcpy(resp_hdr->isid, &login->isid_lo, 6); | |
1348 | resp_hdr->tsih = cpu_to_be16(login->tsih); | |
1349 | resp_hdr->itt = task->hdr->itt; | |
1350 | resp_hdr->statsn = cpu_to_be32(login->stat_sn); | |
1351 | resp_hdr->exp_cmdsn = cpu_to_be32(login->exp_cmd_sn); | |
1352 | resp_hdr->max_cmdsn = cpu_to_be32(login->max_cmd_sn); | |
1353 | resp_hdr->status_class = login->status_class; | |
1354 | resp_hdr->status_detail = login->status_detail; | |
1355 | pld_len = login->data_length; | |
1356 | bnx2i_conn->gen_pdu.resp_wr_ptr = | |
1357 | bnx2i_conn->gen_pdu.resp_buf + pld_len; | |
1358 | ||
1359 | pad_len = 0; | |
1360 | if (pld_len & 0x3) | |
1361 | pad_len = 4 - (pld_len % 4); | |
1362 | ||
1363 | if (pad_len) { | |
1364 | int i = 0; | |
1365 | for (i = 0; i < pad_len; i++) { | |
1366 | bnx2i_conn->gen_pdu.resp_wr_ptr[0] = 0; | |
1367 | bnx2i_conn->gen_pdu.resp_wr_ptr++; | |
1368 | } | |
1369 | } | |
1370 | ||
1371 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, | |
1372 | bnx2i_conn->gen_pdu.resp_buf, | |
1373 | bnx2i_conn->gen_pdu.resp_wr_ptr - bnx2i_conn->gen_pdu.resp_buf); | |
1374 | done: | |
1375 | spin_unlock(&session->lock); | |
1376 | return 0; | |
1377 | } | |
1378 | ||
1379 | /** | |
1380 | * bnx2i_process_tmf_resp - this function handles iscsi TMF response | |
1381 | * @session: iscsi session pointer | |
1382 | * @bnx2i_conn: iscsi connection pointer | |
1383 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1384 | * | |
1385 | * process iSCSI TMF Response CQE and wake up the driver eh thread. | |
1386 | */ | |
1387 | static int bnx2i_process_tmf_resp(struct iscsi_session *session, | |
1388 | struct bnx2i_conn *bnx2i_conn, | |
1389 | struct cqe *cqe) | |
1390 | { | |
1391 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1392 | struct iscsi_task *task; | |
1393 | struct bnx2i_tmf_response *tmf_cqe; | |
1394 | struct iscsi_tm_rsp *resp_hdr; | |
1395 | ||
1396 | tmf_cqe = (struct bnx2i_tmf_response *)cqe; | |
1397 | spin_lock(&session->lock); | |
1398 | task = iscsi_itt_to_task(conn, | |
1399 | tmf_cqe->itt & ISCSI_TMF_RESPONSE_INDEX); | |
1400 | if (!task) | |
1401 | goto done; | |
1402 | ||
1403 | resp_hdr = (struct iscsi_tm_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; | |
1404 | memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); | |
1405 | resp_hdr->opcode = tmf_cqe->op_code; | |
1406 | resp_hdr->max_cmdsn = cpu_to_be32(tmf_cqe->max_cmd_sn); | |
1407 | resp_hdr->exp_cmdsn = cpu_to_be32(tmf_cqe->exp_cmd_sn); | |
1408 | resp_hdr->itt = task->hdr->itt; | |
1409 | resp_hdr->response = tmf_cqe->response; | |
1410 | ||
1411 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0); | |
1412 | done: | |
1413 | spin_unlock(&session->lock); | |
1414 | return 0; | |
1415 | } | |
1416 | ||
1417 | /** | |
1418 | * bnx2i_process_logout_resp - this function handles iscsi logout 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 iSCSI Logout Response CQE & make function call to | |
1424 | * notify the user daemon. | |
1425 | */ | |
1426 | static int bnx2i_process_logout_resp(struct iscsi_session *session, | |
1427 | struct bnx2i_conn *bnx2i_conn, | |
1428 | struct cqe *cqe) | |
1429 | { | |
1430 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1431 | struct iscsi_task *task; | |
1432 | struct bnx2i_logout_response *logout; | |
1433 | struct iscsi_logout_rsp *resp_hdr; | |
1434 | ||
1435 | logout = (struct bnx2i_logout_response *) cqe; | |
1436 | spin_lock(&session->lock); | |
1437 | task = iscsi_itt_to_task(conn, | |
1438 | logout->itt & ISCSI_LOGOUT_RESPONSE_INDEX); | |
1439 | if (!task) | |
1440 | goto done; | |
1441 | ||
1442 | resp_hdr = (struct iscsi_logout_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; | |
1443 | memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); | |
1444 | resp_hdr->opcode = logout->op_code; | |
1445 | resp_hdr->flags = logout->response; | |
1446 | resp_hdr->hlength = 0; | |
1447 | ||
1448 | resp_hdr->itt = task->hdr->itt; | |
1449 | resp_hdr->statsn = task->hdr->exp_statsn; | |
1450 | resp_hdr->exp_cmdsn = cpu_to_be32(logout->exp_cmd_sn); | |
1451 | resp_hdr->max_cmdsn = cpu_to_be32(logout->max_cmd_sn); | |
1452 | ||
1453 | resp_hdr->t2wait = cpu_to_be32(logout->time_to_wait); | |
1454 | resp_hdr->t2retain = cpu_to_be32(logout->time_to_retain); | |
1455 | ||
1456 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0); | |
1457 | done: | |
1458 | spin_unlock(&session->lock); | |
1459 | return 0; | |
1460 | } | |
1461 | ||
1462 | /** | |
1463 | * bnx2i_process_nopin_local_cmpl - this function handles iscsi nopin CQE | |
1464 | * @session: iscsi session pointer | |
1465 | * @bnx2i_conn: iscsi connection pointer | |
1466 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1467 | * | |
1468 | * process iSCSI NOPIN local completion CQE, frees IIT and command structures | |
1469 | */ | |
1470 | static void bnx2i_process_nopin_local_cmpl(struct iscsi_session *session, | |
1471 | struct bnx2i_conn *bnx2i_conn, | |
1472 | struct cqe *cqe) | |
1473 | { | |
1474 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1475 | struct bnx2i_nop_in_msg *nop_in; | |
1476 | struct iscsi_task *task; | |
1477 | ||
1478 | nop_in = (struct bnx2i_nop_in_msg *)cqe; | |
1479 | spin_lock(&session->lock); | |
1480 | task = iscsi_itt_to_task(conn, | |
1481 | nop_in->itt & ISCSI_NOP_IN_MSG_INDEX); | |
1482 | if (task) | |
1483 | iscsi_put_task(task); | |
1484 | spin_unlock(&session->lock); | |
1485 | } | |
1486 | ||
1487 | /** | |
1488 | * bnx2i_unsol_pdu_adjust_rq - makes adjustments to RQ after unsol pdu is recvd | |
1489 | * @conn: iscsi connection | |
1490 | * | |
1491 | * Firmware advances RQ producer index for every unsolicited PDU even if | |
1492 | * payload data length is '0'. This function makes corresponding | |
1493 | * adjustments on the driver side to match this f/w behavior | |
1494 | */ | |
1495 | static void bnx2i_unsol_pdu_adjust_rq(struct bnx2i_conn *bnx2i_conn) | |
1496 | { | |
1497 | char dummy_rq_data[2]; | |
1498 | bnx2i_get_rq_buf(bnx2i_conn, dummy_rq_data, 1); | |
1499 | bnx2i_put_rq_buf(bnx2i_conn, 1); | |
1500 | } | |
1501 | ||
1502 | ||
1503 | /** | |
1504 | * bnx2i_process_nopin_mesg - this function handles iscsi nopin CQE | |
1505 | * @session: iscsi session pointer | |
1506 | * @bnx2i_conn: iscsi connection pointer | |
1507 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1508 | * | |
1509 | * process iSCSI target's proactive iSCSI NOPIN request | |
1510 | */ | |
1511 | static int bnx2i_process_nopin_mesg(struct iscsi_session *session, | |
1512 | struct bnx2i_conn *bnx2i_conn, | |
1513 | struct cqe *cqe) | |
1514 | { | |
1515 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1516 | struct iscsi_task *task; | |
1517 | struct bnx2i_nop_in_msg *nop_in; | |
1518 | struct iscsi_nopin *hdr; | |
1519 | u32 itt; | |
1520 | int tgt_async_nop = 0; | |
1521 | ||
1522 | nop_in = (struct bnx2i_nop_in_msg *)cqe; | |
1523 | itt = nop_in->itt & ISCSI_NOP_IN_MSG_INDEX; | |
1524 | ||
1525 | spin_lock(&session->lock); | |
1526 | hdr = (struct iscsi_nopin *)&bnx2i_conn->gen_pdu.resp_hdr; | |
1527 | memset(hdr, 0, sizeof(struct iscsi_hdr)); | |
1528 | hdr->opcode = nop_in->op_code; | |
1529 | hdr->max_cmdsn = cpu_to_be32(nop_in->max_cmd_sn); | |
1530 | hdr->exp_cmdsn = cpu_to_be32(nop_in->exp_cmd_sn); | |
1531 | hdr->ttt = cpu_to_be32(nop_in->ttt); | |
1532 | ||
1533 | if (itt == (u16) RESERVED_ITT) { | |
1534 | bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); | |
1535 | hdr->itt = RESERVED_ITT; | |
1536 | tgt_async_nop = 1; | |
1537 | goto done; | |
1538 | } | |
1539 | ||
1540 | /* this is a response to one of our nop-outs */ | |
1541 | task = iscsi_itt_to_task(conn, itt); | |
1542 | if (task) { | |
1543 | hdr->flags = ISCSI_FLAG_CMD_FINAL; | |
1544 | hdr->itt = task->hdr->itt; | |
1545 | hdr->ttt = cpu_to_be32(nop_in->ttt); | |
1546 | memcpy(hdr->lun, nop_in->lun, 8); | |
1547 | } | |
1548 | done: | |
1549 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0); | |
1550 | spin_unlock(&session->lock); | |
1551 | ||
1552 | return tgt_async_nop; | |
1553 | } | |
1554 | ||
1555 | ||
1556 | /** | |
1557 | * bnx2i_process_async_mesg - this function handles iscsi async message | |
1558 | * @session: iscsi session pointer | |
1559 | * @bnx2i_conn: iscsi connection pointer | |
1560 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1561 | * | |
1562 | * process iSCSI ASYNC Message | |
1563 | */ | |
1564 | static void bnx2i_process_async_mesg(struct iscsi_session *session, | |
1565 | struct bnx2i_conn *bnx2i_conn, | |
1566 | struct cqe *cqe) | |
1567 | { | |
1568 | struct bnx2i_async_msg *async_cqe; | |
1569 | struct iscsi_async *resp_hdr; | |
1570 | u8 async_event; | |
1571 | ||
1572 | bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); | |
1573 | ||
1574 | async_cqe = (struct bnx2i_async_msg *)cqe; | |
1575 | async_event = async_cqe->async_event; | |
1576 | ||
1577 | if (async_event == ISCSI_ASYNC_MSG_SCSI_EVENT) { | |
1578 | iscsi_conn_printk(KERN_ALERT, bnx2i_conn->cls_conn->dd_data, | |
1579 | "async: scsi events not supported\n"); | |
1580 | return; | |
1581 | } | |
1582 | ||
1583 | spin_lock(&session->lock); | |
1584 | resp_hdr = (struct iscsi_async *) &bnx2i_conn->gen_pdu.resp_hdr; | |
1585 | memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); | |
1586 | resp_hdr->opcode = async_cqe->op_code; | |
1587 | resp_hdr->flags = 0x80; | |
1588 | ||
1589 | memcpy(resp_hdr->lun, async_cqe->lun, 8); | |
1590 | resp_hdr->exp_cmdsn = cpu_to_be32(async_cqe->exp_cmd_sn); | |
1591 | resp_hdr->max_cmdsn = cpu_to_be32(async_cqe->max_cmd_sn); | |
1592 | ||
1593 | resp_hdr->async_event = async_cqe->async_event; | |
1594 | resp_hdr->async_vcode = async_cqe->async_vcode; | |
1595 | ||
1596 | resp_hdr->param1 = cpu_to_be16(async_cqe->param1); | |
1597 | resp_hdr->param2 = cpu_to_be16(async_cqe->param2); | |
1598 | resp_hdr->param3 = cpu_to_be16(async_cqe->param3); | |
1599 | ||
1600 | __iscsi_complete_pdu(bnx2i_conn->cls_conn->dd_data, | |
1601 | (struct iscsi_hdr *)resp_hdr, NULL, 0); | |
1602 | spin_unlock(&session->lock); | |
1603 | } | |
1604 | ||
1605 | ||
1606 | /** | |
1607 | * bnx2i_process_reject_mesg - process iscsi reject pdu | |
1608 | * @session: iscsi session pointer | |
1609 | * @bnx2i_conn: iscsi connection pointer | |
1610 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1611 | * | |
1612 | * process iSCSI REJECT message | |
1613 | */ | |
1614 | static void bnx2i_process_reject_mesg(struct iscsi_session *session, | |
1615 | struct bnx2i_conn *bnx2i_conn, | |
1616 | struct cqe *cqe) | |
1617 | { | |
1618 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1619 | struct bnx2i_reject_msg *reject; | |
1620 | struct iscsi_reject *hdr; | |
1621 | ||
1622 | reject = (struct bnx2i_reject_msg *) cqe; | |
1623 | if (reject->data_length) { | |
1624 | bnx2i_get_rq_buf(bnx2i_conn, conn->data, reject->data_length); | |
1625 | bnx2i_put_rq_buf(bnx2i_conn, 1); | |
1626 | } else | |
1627 | bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); | |
1628 | ||
1629 | spin_lock(&session->lock); | |
1630 | hdr = (struct iscsi_reject *) &bnx2i_conn->gen_pdu.resp_hdr; | |
1631 | memset(hdr, 0, sizeof(struct iscsi_hdr)); | |
1632 | hdr->opcode = reject->op_code; | |
1633 | hdr->reason = reject->reason; | |
1634 | hton24(hdr->dlength, reject->data_length); | |
1635 | hdr->max_cmdsn = cpu_to_be32(reject->max_cmd_sn); | |
1636 | hdr->exp_cmdsn = cpu_to_be32(reject->exp_cmd_sn); | |
1637 | hdr->ffffffff = cpu_to_be32(RESERVED_ITT); | |
1638 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, conn->data, | |
1639 | reject->data_length); | |
1640 | spin_unlock(&session->lock); | |
1641 | } | |
1642 | ||
1643 | /** | |
1644 | * bnx2i_process_cmd_cleanup_resp - process scsi command clean-up completion | |
1645 | * @session: iscsi session pointer | |
1646 | * @bnx2i_conn: iscsi connection pointer | |
1647 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1648 | * | |
1649 | * process command cleanup response CQE during conn shutdown or error recovery | |
1650 | */ | |
1651 | static void bnx2i_process_cmd_cleanup_resp(struct iscsi_session *session, | |
1652 | struct bnx2i_conn *bnx2i_conn, | |
1653 | struct cqe *cqe) | |
1654 | { | |
1655 | struct bnx2i_cleanup_response *cmd_clean_rsp; | |
1656 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1657 | struct iscsi_task *task; | |
1658 | ||
1659 | cmd_clean_rsp = (struct bnx2i_cleanup_response *)cqe; | |
1660 | spin_lock(&session->lock); | |
1661 | task = iscsi_itt_to_task(conn, | |
1662 | cmd_clean_rsp->itt & ISCSI_CLEANUP_RESPONSE_INDEX); | |
1663 | if (!task) | |
1664 | printk(KERN_ALERT "bnx2i: cmd clean ITT %x not active\n", | |
1665 | cmd_clean_rsp->itt & ISCSI_CLEANUP_RESPONSE_INDEX); | |
1666 | spin_unlock(&session->lock); | |
1667 | complete(&bnx2i_conn->cmd_cleanup_cmpl); | |
1668 | } | |
1669 | ||
1670 | ||
1671 | ||
1672 | /** | |
1673 | * bnx2i_process_new_cqes - process newly DMA'ed CQE's | |
1674 | * @bnx2i_conn: iscsi connection | |
1675 | * | |
1676 | * this function is called by generic KCQ handler to process all pending CQE's | |
1677 | */ | |
1678 | static void bnx2i_process_new_cqes(struct bnx2i_conn *bnx2i_conn) | |
1679 | { | |
1680 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1681 | struct iscsi_session *session = conn->session; | |
1682 | struct qp_info *qp = &bnx2i_conn->ep->qp; | |
1683 | struct bnx2i_nop_in_msg *nopin; | |
1684 | int tgt_async_msg; | |
1685 | ||
1686 | while (1) { | |
1687 | nopin = (struct bnx2i_nop_in_msg *) qp->cq_cons_qe; | |
1688 | if (nopin->cq_req_sn != qp->cqe_exp_seq_sn) | |
1689 | break; | |
1690 | ||
1691 | if (unlikely(test_bit(ISCSI_SUSPEND_BIT, &conn->suspend_rx))) | |
1692 | break; | |
1693 | ||
1694 | tgt_async_msg = 0; | |
1695 | ||
1696 | switch (nopin->op_code) { | |
1697 | case ISCSI_OP_SCSI_CMD_RSP: | |
1698 | case ISCSI_OP_SCSI_DATA_IN: | |
1699 | bnx2i_process_scsi_cmd_resp(session, bnx2i_conn, | |
1700 | qp->cq_cons_qe); | |
1701 | break; | |
1702 | case ISCSI_OP_LOGIN_RSP: | |
1703 | bnx2i_process_login_resp(session, bnx2i_conn, | |
1704 | qp->cq_cons_qe); | |
1705 | break; | |
1706 | case ISCSI_OP_SCSI_TMFUNC_RSP: | |
1707 | bnx2i_process_tmf_resp(session, bnx2i_conn, | |
1708 | qp->cq_cons_qe); | |
1709 | break; | |
1710 | case ISCSI_OP_LOGOUT_RSP: | |
1711 | bnx2i_process_logout_resp(session, bnx2i_conn, | |
1712 | qp->cq_cons_qe); | |
1713 | break; | |
1714 | case ISCSI_OP_NOOP_IN: | |
1715 | if (bnx2i_process_nopin_mesg(session, bnx2i_conn, | |
1716 | qp->cq_cons_qe)) | |
1717 | tgt_async_msg = 1; | |
1718 | break; | |
1719 | case ISCSI_OPCODE_NOPOUT_LOCAL_COMPLETION: | |
1720 | bnx2i_process_nopin_local_cmpl(session, bnx2i_conn, | |
1721 | qp->cq_cons_qe); | |
1722 | break; | |
1723 | case ISCSI_OP_ASYNC_EVENT: | |
1724 | bnx2i_process_async_mesg(session, bnx2i_conn, | |
1725 | qp->cq_cons_qe); | |
1726 | tgt_async_msg = 1; | |
1727 | break; | |
1728 | case ISCSI_OP_REJECT: | |
1729 | bnx2i_process_reject_mesg(session, bnx2i_conn, | |
1730 | qp->cq_cons_qe); | |
1731 | break; | |
1732 | case ISCSI_OPCODE_CLEANUP_RESPONSE: | |
1733 | bnx2i_process_cmd_cleanup_resp(session, bnx2i_conn, | |
1734 | qp->cq_cons_qe); | |
1735 | break; | |
1736 | default: | |
1737 | printk(KERN_ALERT "bnx2i: unknown opcode 0x%x\n", | |
1738 | nopin->op_code); | |
1739 | } | |
1740 | ||
1741 | if (!tgt_async_msg) | |
1742 | bnx2i_conn->ep->num_active_cmds--; | |
1743 | ||
1744 | /* clear out in production version only, till beta keep opcode | |
1745 | * field intact, will be helpful in debugging (context dump) | |
1746 | * nopin->op_code = 0; | |
1747 | */ | |
1748 | qp->cqe_exp_seq_sn++; | |
1749 | if (qp->cqe_exp_seq_sn == (qp->cqe_size * 2 + 1)) | |
1750 | qp->cqe_exp_seq_sn = ISCSI_INITIAL_SN; | |
1751 | ||
1752 | if (qp->cq_cons_qe == qp->cq_last_qe) { | |
1753 | qp->cq_cons_qe = qp->cq_first_qe; | |
1754 | qp->cq_cons_idx = 0; | |
1755 | } else { | |
1756 | qp->cq_cons_qe++; | |
1757 | qp->cq_cons_idx++; | |
1758 | } | |
1759 | } | |
1760 | bnx2i_arm_cq_event_coalescing(bnx2i_conn->ep, CNIC_ARM_CQE); | |
1761 | } | |
1762 | ||
1763 | /** | |
1764 | * bnx2i_fastpath_notification - process global event queue (KCQ) | |
1765 | * @hba: adapter structure pointer | |
1766 | * @new_cqe_kcqe: pointer to newly DMA'ed KCQE entry | |
1767 | * | |
1768 | * Fast path event notification handler, KCQ entry carries context id | |
1769 | * of the connection that has 1 or more pending CQ entries | |
1770 | */ | |
1771 | static void bnx2i_fastpath_notification(struct bnx2i_hba *hba, | |
1772 | struct iscsi_kcqe *new_cqe_kcqe) | |
1773 | { | |
1774 | struct bnx2i_conn *conn; | |
1775 | u32 iscsi_cid; | |
1776 | ||
1777 | iscsi_cid = new_cqe_kcqe->iscsi_conn_id; | |
1778 | conn = bnx2i_get_conn_from_id(hba, iscsi_cid); | |
1779 | ||
1780 | if (!conn) { | |
1781 | printk(KERN_ALERT "cid #%x not valid\n", iscsi_cid); | |
1782 | return; | |
1783 | } | |
1784 | if (!conn->ep) { | |
1785 | printk(KERN_ALERT "cid #%x - ep not bound\n", iscsi_cid); | |
1786 | return; | |
1787 | } | |
1788 | ||
1789 | bnx2i_process_new_cqes(conn); | |
1790 | } | |
1791 | ||
1792 | ||
1793 | /** | |
1794 | * bnx2i_process_update_conn_cmpl - process iscsi conn update completion KCQE | |
1795 | * @hba: adapter structure pointer | |
1796 | * @update_kcqe: kcqe pointer | |
1797 | * | |
1798 | * CONN_UPDATE completion handler, this completes iSCSI connection FFP migration | |
1799 | */ | |
1800 | static void bnx2i_process_update_conn_cmpl(struct bnx2i_hba *hba, | |
1801 | struct iscsi_kcqe *update_kcqe) | |
1802 | { | |
1803 | struct bnx2i_conn *conn; | |
1804 | u32 iscsi_cid; | |
1805 | ||
1806 | iscsi_cid = update_kcqe->iscsi_conn_id; | |
1807 | conn = bnx2i_get_conn_from_id(hba, iscsi_cid); | |
1808 | ||
1809 | if (!conn) { | |
1810 | printk(KERN_ALERT "conn_update: cid %x not valid\n", iscsi_cid); | |
1811 | return; | |
1812 | } | |
1813 | if (!conn->ep) { | |
1814 | printk(KERN_ALERT "cid %x does not have ep bound\n", iscsi_cid); | |
1815 | return; | |
1816 | } | |
1817 | ||
1818 | if (update_kcqe->completion_status) { | |
1819 | printk(KERN_ALERT "request failed cid %x\n", iscsi_cid); | |
1820 | conn->ep->state = EP_STATE_ULP_UPDATE_FAILED; | |
1821 | } else | |
1822 | conn->ep->state = EP_STATE_ULP_UPDATE_COMPL; | |
1823 | ||
1824 | wake_up_interruptible(&conn->ep->ofld_wait); | |
1825 | } | |
1826 | ||
1827 | ||
1828 | /** | |
1829 | * bnx2i_recovery_que_add_conn - add connection to recovery queue | |
1830 | * @hba: adapter structure pointer | |
1831 | * @bnx2i_conn: iscsi connection | |
1832 | * | |
1833 | * Add connection to recovery queue and schedule adapter eh worker | |
1834 | */ | |
1835 | static void bnx2i_recovery_que_add_conn(struct bnx2i_hba *hba, | |
1836 | struct bnx2i_conn *bnx2i_conn) | |
1837 | { | |
1838 | iscsi_conn_failure(bnx2i_conn->cls_conn->dd_data, | |
1839 | ISCSI_ERR_CONN_FAILED); | |
1840 | } | |
1841 | ||
1842 | ||
1843 | /** | |
1844 | * bnx2i_process_tcp_error - process error notification on a given connection | |
1845 | * | |
1846 | * @hba: adapter structure pointer | |
1847 | * @tcp_err: tcp error kcqe pointer | |
1848 | * | |
1849 | * handles tcp level error notifications from FW. | |
1850 | */ | |
1851 | static void bnx2i_process_tcp_error(struct bnx2i_hba *hba, | |
1852 | struct iscsi_kcqe *tcp_err) | |
1853 | { | |
1854 | struct bnx2i_conn *bnx2i_conn; | |
1855 | u32 iscsi_cid; | |
1856 | ||
1857 | iscsi_cid = tcp_err->iscsi_conn_id; | |
1858 | bnx2i_conn = bnx2i_get_conn_from_id(hba, iscsi_cid); | |
1859 | ||
1860 | if (!bnx2i_conn) { | |
1861 | printk(KERN_ALERT "bnx2i - cid 0x%x not valid\n", iscsi_cid); | |
1862 | return; | |
1863 | } | |
1864 | ||
1865 | printk(KERN_ALERT "bnx2i - cid 0x%x had TCP errors, error code 0x%x\n", | |
1866 | iscsi_cid, tcp_err->completion_status); | |
1867 | bnx2i_recovery_que_add_conn(bnx2i_conn->hba, bnx2i_conn); | |
1868 | } | |
1869 | ||
1870 | ||
1871 | /** | |
1872 | * bnx2i_process_iscsi_error - process error notification on a given connection | |
1873 | * @hba: adapter structure pointer | |
1874 | * @iscsi_err: iscsi error kcqe pointer | |
1875 | * | |
1876 | * handles iscsi error notifications from the FW. Firmware based in initial | |
1877 | * handshake classifies iscsi protocol / TCP rfc violation into either | |
1878 | * warning or error indications. If indication is of "Error" type, driver | |
1879 | * will initiate session recovery for that connection/session. For | |
1880 | * "Warning" type indication, driver will put out a system log message | |
1881 | * (there will be only one message for each type for the life of the | |
1882 | * session, this is to avoid un-necessarily overloading the system) | |
1883 | */ | |
1884 | static void bnx2i_process_iscsi_error(struct bnx2i_hba *hba, | |
1885 | struct iscsi_kcqe *iscsi_err) | |
1886 | { | |
1887 | struct bnx2i_conn *bnx2i_conn; | |
1888 | u32 iscsi_cid; | |
1889 | char warn_notice[] = "iscsi_warning"; | |
1890 | char error_notice[] = "iscsi_error"; | |
1891 | char additional_notice[64]; | |
1892 | char *message; | |
1893 | int need_recovery; | |
1894 | u64 err_mask64; | |
1895 | ||
1896 | iscsi_cid = iscsi_err->iscsi_conn_id; | |
1897 | bnx2i_conn = bnx2i_get_conn_from_id(hba, iscsi_cid); | |
1898 | if (!bnx2i_conn) { | |
1899 | printk(KERN_ALERT "bnx2i - cid 0x%x not valid\n", iscsi_cid); | |
1900 | return; | |
1901 | } | |
1902 | ||
1903 | err_mask64 = (0x1ULL << iscsi_err->completion_status); | |
1904 | ||
1905 | if (err_mask64 & iscsi_error_mask) { | |
1906 | need_recovery = 0; | |
1907 | message = warn_notice; | |
1908 | } else { | |
1909 | need_recovery = 1; | |
1910 | message = error_notice; | |
1911 | } | |
1912 | ||
1913 | switch (iscsi_err->completion_status) { | |
1914 | case ISCSI_KCQE_COMPLETION_STATUS_HDR_DIG_ERR: | |
1915 | strcpy(additional_notice, "hdr digest err"); | |
1916 | break; | |
1917 | case ISCSI_KCQE_COMPLETION_STATUS_DATA_DIG_ERR: | |
1918 | strcpy(additional_notice, "data digest err"); | |
1919 | break; | |
1920 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_OPCODE: | |
1921 | strcpy(additional_notice, "wrong opcode rcvd"); | |
1922 | break; | |
1923 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_AHS_LEN: | |
1924 | strcpy(additional_notice, "AHS len > 0 rcvd"); | |
1925 | break; | |
1926 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_ITT: | |
1927 | strcpy(additional_notice, "invalid ITT rcvd"); | |
1928 | break; | |
1929 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_STATSN: | |
1930 | strcpy(additional_notice, "wrong StatSN rcvd"); | |
1931 | break; | |
1932 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_EXP_DATASN: | |
1933 | strcpy(additional_notice, "wrong DataSN rcvd"); | |
1934 | break; | |
1935 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T: | |
1936 | strcpy(additional_notice, "pend R2T violation"); | |
1937 | break; | |
1938 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_0: | |
1939 | strcpy(additional_notice, "ERL0, UO"); | |
1940 | break; | |
1941 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_1: | |
1942 | strcpy(additional_notice, "ERL0, U1"); | |
1943 | break; | |
1944 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_2: | |
1945 | strcpy(additional_notice, "ERL0, U2"); | |
1946 | break; | |
1947 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_3: | |
1948 | strcpy(additional_notice, "ERL0, U3"); | |
1949 | break; | |
1950 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_4: | |
1951 | strcpy(additional_notice, "ERL0, U4"); | |
1952 | break; | |
1953 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_5: | |
1954 | strcpy(additional_notice, "ERL0, U5"); | |
1955 | break; | |
1956 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_6: | |
1957 | strcpy(additional_notice, "ERL0, U6"); | |
1958 | break; | |
1959 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REMAIN_RCV_LEN: | |
1960 | strcpy(additional_notice, "invalid resi len"); | |
1961 | break; | |
1962 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_MAX_RCV_PDU_LEN: | |
1963 | strcpy(additional_notice, "MRDSL violation"); | |
1964 | break; | |
1965 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_F_BIT_ZERO: | |
1966 | strcpy(additional_notice, "F-bit not set"); | |
1967 | break; | |
1968 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_NOT_RSRV: | |
1969 | strcpy(additional_notice, "invalid TTT"); | |
1970 | break; | |
1971 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DATASN: | |
1972 | strcpy(additional_notice, "invalid DataSN"); | |
1973 | break; | |
1974 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REMAIN_BURST_LEN: | |
1975 | strcpy(additional_notice, "burst len violation"); | |
1976 | break; | |
1977 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_BUFFER_OFF: | |
1978 | strcpy(additional_notice, "buf offset violation"); | |
1979 | break; | |
1980 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_LUN: | |
1981 | strcpy(additional_notice, "invalid LUN field"); | |
1982 | break; | |
1983 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_R2TSN: | |
1984 | strcpy(additional_notice, "invalid R2TSN field"); | |
1985 | break; | |
1986 | #define BNX2I_ERR_DESIRED_DATA_TRNS_LEN_0 \ | |
1987 | ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_0 | |
1988 | case BNX2I_ERR_DESIRED_DATA_TRNS_LEN_0: | |
1989 | strcpy(additional_notice, "invalid cmd len1"); | |
1990 | break; | |
1991 | #define BNX2I_ERR_DESIRED_DATA_TRNS_LEN_1 \ | |
1992 | ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_1 | |
1993 | case BNX2I_ERR_DESIRED_DATA_TRNS_LEN_1: | |
1994 | strcpy(additional_notice, "invalid cmd len2"); | |
1995 | break; | |
1996 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T_EXCEED: | |
1997 | strcpy(additional_notice, | |
1998 | "pend r2t exceeds MaxOutstandingR2T value"); | |
1999 | break; | |
2000 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_IS_RSRV: | |
2001 | strcpy(additional_notice, "TTT is rsvd"); | |
2002 | break; | |
2003 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_MAX_BURST_LEN: | |
2004 | strcpy(additional_notice, "MBL violation"); | |
2005 | break; | |
2006 | #define BNX2I_ERR_DATA_SEG_LEN_NOT_ZERO \ | |
2007 | ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DATA_SEG_LEN_NOT_ZERO | |
2008 | case BNX2I_ERR_DATA_SEG_LEN_NOT_ZERO: | |
2009 | strcpy(additional_notice, "data seg len != 0"); | |
2010 | break; | |
2011 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REJECT_PDU_LEN: | |
2012 | strcpy(additional_notice, "reject pdu len error"); | |
2013 | break; | |
2014 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_ASYNC_PDU_LEN: | |
2015 | strcpy(additional_notice, "async pdu len error"); | |
2016 | break; | |
2017 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_NOPIN_PDU_LEN: | |
2018 | strcpy(additional_notice, "nopin pdu len error"); | |
2019 | break; | |
2020 | #define BNX2_ERR_PEND_R2T_IN_CLEANUP \ | |
2021 | ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T_IN_CLEANUP | |
2022 | case BNX2_ERR_PEND_R2T_IN_CLEANUP: | |
2023 | strcpy(additional_notice, "pend r2t in cleanup"); | |
2024 | break; | |
2025 | ||
2026 | case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_IP_FRAGMENT: | |
2027 | strcpy(additional_notice, "IP fragments rcvd"); | |
2028 | break; | |
2029 | case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_IP_OPTIONS: | |
2030 | strcpy(additional_notice, "IP options error"); | |
2031 | break; | |
2032 | case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_URGENT_FLAG: | |
2033 | strcpy(additional_notice, "urgent flag error"); | |
2034 | break; | |
2035 | default: | |
2036 | printk(KERN_ALERT "iscsi_err - unknown err %x\n", | |
2037 | iscsi_err->completion_status); | |
2038 | } | |
2039 | ||
2040 | if (need_recovery) { | |
2041 | iscsi_conn_printk(KERN_ALERT, | |
2042 | bnx2i_conn->cls_conn->dd_data, | |
2043 | "bnx2i: %s - %s\n", | |
2044 | message, additional_notice); | |
2045 | ||
2046 | iscsi_conn_printk(KERN_ALERT, | |
2047 | bnx2i_conn->cls_conn->dd_data, | |
2048 | "conn_err - hostno %d conn %p, " | |
2049 | "iscsi_cid %x cid %x\n", | |
2050 | bnx2i_conn->hba->shost->host_no, | |
2051 | bnx2i_conn, bnx2i_conn->ep->ep_iscsi_cid, | |
2052 | bnx2i_conn->ep->ep_cid); | |
2053 | bnx2i_recovery_que_add_conn(bnx2i_conn->hba, bnx2i_conn); | |
2054 | } else | |
2055 | if (!test_and_set_bit(iscsi_err->completion_status, | |
2056 | (void *) &bnx2i_conn->violation_notified)) | |
2057 | iscsi_conn_printk(KERN_ALERT, | |
2058 | bnx2i_conn->cls_conn->dd_data, | |
2059 | "bnx2i: %s - %s\n", | |
2060 | message, additional_notice); | |
2061 | } | |
2062 | ||
2063 | ||
2064 | /** | |
2065 | * bnx2i_process_conn_destroy_cmpl - process iscsi conn destroy completion | |
2066 | * @hba: adapter structure pointer | |
2067 | * @conn_destroy: conn destroy kcqe pointer | |
2068 | * | |
2069 | * handles connection destroy completion request. | |
2070 | */ | |
2071 | static void bnx2i_process_conn_destroy_cmpl(struct bnx2i_hba *hba, | |
2072 | struct iscsi_kcqe *conn_destroy) | |
2073 | { | |
2074 | struct bnx2i_endpoint *ep; | |
2075 | ||
2076 | ep = bnx2i_find_ep_in_destroy_list(hba, conn_destroy->iscsi_conn_id); | |
2077 | if (!ep) { | |
2078 | printk(KERN_ALERT "bnx2i_conn_destroy_cmpl: no pending " | |
2079 | "offload request, unexpected complection\n"); | |
2080 | return; | |
2081 | } | |
2082 | ||
2083 | if (hba != ep->hba) { | |
2084 | printk(KERN_ALERT "conn destroy- error hba mis-match\n"); | |
2085 | return; | |
2086 | } | |
2087 | ||
2088 | if (conn_destroy->completion_status) { | |
2089 | printk(KERN_ALERT "conn_destroy_cmpl: op failed\n"); | |
2090 | ep->state = EP_STATE_CLEANUP_FAILED; | |
2091 | } else | |
2092 | ep->state = EP_STATE_CLEANUP_CMPL; | |
2093 | wake_up_interruptible(&ep->ofld_wait); | |
2094 | } | |
2095 | ||
2096 | ||
2097 | /** | |
2098 | * bnx2i_process_ofld_cmpl - process initial iscsi conn offload completion | |
2099 | * @hba: adapter structure pointer | |
2100 | * @ofld_kcqe: conn offload kcqe pointer | |
2101 | * | |
2102 | * handles initial connection offload completion, ep_connect() thread is | |
2103 | * woken-up to continue with LLP connect process | |
2104 | */ | |
2105 | static void bnx2i_process_ofld_cmpl(struct bnx2i_hba *hba, | |
2106 | struct iscsi_kcqe *ofld_kcqe) | |
2107 | { | |
2108 | u32 cid_addr; | |
2109 | struct bnx2i_endpoint *ep; | |
2110 | u32 cid_num; | |
2111 | ||
2112 | ep = bnx2i_find_ep_in_ofld_list(hba, ofld_kcqe->iscsi_conn_id); | |
2113 | if (!ep) { | |
2114 | printk(KERN_ALERT "ofld_cmpl: no pend offload request\n"); | |
2115 | return; | |
2116 | } | |
2117 | ||
2118 | if (hba != ep->hba) { | |
2119 | printk(KERN_ALERT "ofld_cmpl: error hba mis-match\n"); | |
2120 | return; | |
2121 | } | |
2122 | ||
2123 | if (ofld_kcqe->completion_status) { | |
2124 | if (ofld_kcqe->completion_status == | |
2125 | ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE) | |
2126 | printk(KERN_ALERT "bnx2i: unable to allocate" | |
2127 | " iSCSI context resources\n"); | |
2128 | ep->state = EP_STATE_OFLD_FAILED; | |
2129 | } else { | |
2130 | ep->state = EP_STATE_OFLD_COMPL; | |
2131 | cid_addr = ofld_kcqe->iscsi_conn_context_id; | |
2132 | cid_num = bnx2i_get_cid_num(ep); | |
2133 | ep->ep_cid = cid_addr; | |
2134 | ep->qp.ctx_base = NULL; | |
2135 | } | |
2136 | wake_up_interruptible(&ep->ofld_wait); | |
2137 | } | |
2138 | ||
2139 | /** | |
2140 | * bnx2i_indicate_kcqe - process iscsi conn update completion KCQE | |
2141 | * @hba: adapter structure pointer | |
2142 | * @update_kcqe: kcqe pointer | |
2143 | * | |
2144 | * Generic KCQ event handler/dispatcher | |
2145 | */ | |
2146 | static void bnx2i_indicate_kcqe(void *context, struct kcqe *kcqe[], | |
2147 | u32 num_cqe) | |
2148 | { | |
2149 | struct bnx2i_hba *hba = context; | |
2150 | int i = 0; | |
2151 | struct iscsi_kcqe *ikcqe = NULL; | |
2152 | ||
2153 | while (i < num_cqe) { | |
2154 | ikcqe = (struct iscsi_kcqe *) kcqe[i++]; | |
2155 | ||
2156 | if (ikcqe->op_code == | |
2157 | ISCSI_KCQE_OPCODE_CQ_EVENT_NOTIFICATION) | |
2158 | bnx2i_fastpath_notification(hba, ikcqe); | |
2159 | else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_OFFLOAD_CONN) | |
2160 | bnx2i_process_ofld_cmpl(hba, ikcqe); | |
2161 | else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_UPDATE_CONN) | |
2162 | bnx2i_process_update_conn_cmpl(hba, ikcqe); | |
2163 | else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_INIT) { | |
2164 | if (ikcqe->completion_status != | |
2165 | ISCSI_KCQE_COMPLETION_STATUS_SUCCESS) | |
2166 | bnx2i_iscsi_license_error(hba, ikcqe->\ | |
2167 | completion_status); | |
2168 | else { | |
2169 | set_bit(ADAPTER_STATE_UP, &hba->adapter_state); | |
2170 | bnx2i_get_link_state(hba); | |
2171 | printk(KERN_INFO "bnx2i [%.2x:%.2x.%.2x]: " | |
2172 | "ISCSI_INIT passed\n", | |
2173 | (u8)hba->pcidev->bus->number, | |
2174 | hba->pci_devno, | |
2175 | (u8)hba->pci_func); | |
2176 | ||
2177 | ||
2178 | } | |
2179 | } else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_DESTROY_CONN) | |
2180 | bnx2i_process_conn_destroy_cmpl(hba, ikcqe); | |
2181 | else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_ISCSI_ERROR) | |
2182 | bnx2i_process_iscsi_error(hba, ikcqe); | |
2183 | else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_TCP_ERROR) | |
2184 | bnx2i_process_tcp_error(hba, ikcqe); | |
2185 | else | |
2186 | printk(KERN_ALERT "bnx2i: unknown opcode 0x%x\n", | |
2187 | ikcqe->op_code); | |
2188 | } | |
2189 | } | |
2190 | ||
2191 | ||
2192 | /** | |
2193 | * bnx2i_indicate_netevent - Generic netdev event handler | |
2194 | * @context: adapter structure pointer | |
2195 | * @event: event type | |
2196 | * | |
2197 | * Handles four netdev events, NETDEV_UP, NETDEV_DOWN, | |
2198 | * NETDEV_GOING_DOWN and NETDEV_CHANGE | |
2199 | */ | |
2200 | static void bnx2i_indicate_netevent(void *context, unsigned long event) | |
2201 | { | |
2202 | struct bnx2i_hba *hba = context; | |
2203 | ||
2204 | switch (event) { | |
2205 | case NETDEV_UP: | |
2206 | if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) | |
2207 | bnx2i_send_fw_iscsi_init_msg(hba); | |
2208 | break; | |
2209 | case NETDEV_DOWN: | |
2210 | clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); | |
2211 | clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); | |
2212 | break; | |
2213 | case NETDEV_GOING_DOWN: | |
2214 | set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); | |
2215 | iscsi_host_for_each_session(hba->shost, | |
2216 | bnx2i_drop_session); | |
2217 | break; | |
2218 | case NETDEV_CHANGE: | |
2219 | bnx2i_get_link_state(hba); | |
2220 | break; | |
2221 | default: | |
2222 | ; | |
2223 | } | |
2224 | } | |
2225 | ||
2226 | ||
2227 | /** | |
2228 | * bnx2i_cm_connect_cmpl - process iscsi conn establishment completion | |
2229 | * @cm_sk: cnic sock structure pointer | |
2230 | * | |
2231 | * function callback exported via bnx2i - cnic driver interface to | |
2232 | * indicate completion of option-2 TCP connect request. | |
2233 | */ | |
2234 | static void bnx2i_cm_connect_cmpl(struct cnic_sock *cm_sk) | |
2235 | { | |
2236 | struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; | |
2237 | ||
2238 | if (test_bit(ADAPTER_STATE_GOING_DOWN, &ep->hba->adapter_state)) | |
2239 | ep->state = EP_STATE_CONNECT_FAILED; | |
2240 | else if (test_bit(SK_F_OFFLD_COMPLETE, &cm_sk->flags)) | |
2241 | ep->state = EP_STATE_CONNECT_COMPL; | |
2242 | else | |
2243 | ep->state = EP_STATE_CONNECT_FAILED; | |
2244 | ||
2245 | wake_up_interruptible(&ep->ofld_wait); | |
2246 | } | |
2247 | ||
2248 | ||
2249 | /** | |
2250 | * bnx2i_cm_close_cmpl - process tcp conn close completion | |
2251 | * @cm_sk: cnic sock structure pointer | |
2252 | * | |
2253 | * function callback exported via bnx2i - cnic driver interface to | |
2254 | * indicate completion of option-2 graceful TCP connect shutdown | |
2255 | */ | |
2256 | static void bnx2i_cm_close_cmpl(struct cnic_sock *cm_sk) | |
2257 | { | |
2258 | struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; | |
2259 | ||
2260 | ep->state = EP_STATE_DISCONN_COMPL; | |
2261 | wake_up_interruptible(&ep->ofld_wait); | |
2262 | } | |
2263 | ||
2264 | ||
2265 | /** | |
2266 | * bnx2i_cm_abort_cmpl - process abortive tcp conn teardown completion | |
2267 | * @cm_sk: cnic sock structure pointer | |
2268 | * | |
2269 | * function callback exported via bnx2i - cnic driver interface to | |
2270 | * indicate completion of option-2 abortive TCP connect termination | |
2271 | */ | |
2272 | static void bnx2i_cm_abort_cmpl(struct cnic_sock *cm_sk) | |
2273 | { | |
2274 | struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; | |
2275 | ||
2276 | ep->state = EP_STATE_DISCONN_COMPL; | |
2277 | wake_up_interruptible(&ep->ofld_wait); | |
2278 | } | |
2279 | ||
2280 | ||
2281 | /** | |
2282 | * bnx2i_cm_remote_close - process received TCP FIN | |
2283 | * @hba: adapter structure pointer | |
2284 | * @update_kcqe: kcqe pointer | |
2285 | * | |
2286 | * function callback exported via bnx2i - cnic driver interface to indicate | |
2287 | * async TCP events such as FIN | |
2288 | */ | |
2289 | static void bnx2i_cm_remote_close(struct cnic_sock *cm_sk) | |
2290 | { | |
2291 | struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; | |
2292 | ||
2293 | ep->state = EP_STATE_TCP_FIN_RCVD; | |
2294 | if (ep->conn) | |
2295 | bnx2i_recovery_que_add_conn(ep->hba, ep->conn); | |
2296 | } | |
2297 | ||
2298 | /** | |
2299 | * bnx2i_cm_remote_abort - process TCP RST and start conn cleanup | |
2300 | * @hba: adapter structure pointer | |
2301 | * @update_kcqe: kcqe pointer | |
2302 | * | |
2303 | * function callback exported via bnx2i - cnic driver interface to | |
2304 | * indicate async TCP events (RST) sent by the peer. | |
2305 | */ | |
2306 | static void bnx2i_cm_remote_abort(struct cnic_sock *cm_sk) | |
2307 | { | |
2308 | struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; | |
2309 | ||
2310 | ep->state = EP_STATE_TCP_RST_RCVD; | |
2311 | if (ep->conn) | |
2312 | bnx2i_recovery_que_add_conn(ep->hba, ep->conn); | |
2313 | } | |
2314 | ||
2315 | ||
2316 | static void bnx2i_send_nl_mesg(struct cnic_dev *dev, u32 msg_type, | |
2317 | char *buf, u16 buflen) | |
2318 | { | |
2319 | struct bnx2i_hba *hba; | |
2320 | ||
2321 | hba = bnx2i_find_hba_for_cnic(dev); | |
2322 | if (!hba) | |
2323 | return; | |
2324 | ||
2325 | if (iscsi_offload_mesg(hba->shost, &bnx2i_iscsi_transport, | |
2326 | msg_type, buf, buflen)) | |
2327 | printk(KERN_ALERT "bnx2i: private nl message send error\n"); | |
2328 | ||
2329 | } | |
2330 | ||
2331 | ||
2332 | /** | |
2333 | * bnx2i_cnic_cb - global template of bnx2i - cnic driver interface structure | |
2334 | * carrying callback function pointers | |
2335 | * | |
2336 | */ | |
2337 | struct cnic_ulp_ops bnx2i_cnic_cb = { | |
2338 | .cnic_init = bnx2i_ulp_init, | |
2339 | .cnic_exit = bnx2i_ulp_exit, | |
2340 | .cnic_start = bnx2i_start, | |
2341 | .cnic_stop = bnx2i_stop, | |
2342 | .indicate_kcqes = bnx2i_indicate_kcqe, | |
2343 | .indicate_netevent = bnx2i_indicate_netevent, | |
2344 | .cm_connect_complete = bnx2i_cm_connect_cmpl, | |
2345 | .cm_close_complete = bnx2i_cm_close_cmpl, | |
2346 | .cm_abort_complete = bnx2i_cm_abort_cmpl, | |
2347 | .cm_remote_close = bnx2i_cm_remote_close, | |
2348 | .cm_remote_abort = bnx2i_cm_remote_abort, | |
2349 | .iscsi_nl_send_msg = bnx2i_send_nl_mesg, | |
2350 | .owner = THIS_MODULE | |
2351 | }; | |
2352 | ||
2353 | ||
2354 | /** | |
2355 | * bnx2i_map_ep_dbell_regs - map connection doorbell registers | |
2356 | * @ep: bnx2i endpoint | |
2357 | * | |
2358 | * maps connection's SQ and RQ doorbell registers, 5706/5708/5709 hosts these | |
2359 | * register in BAR #0. Whereas in 57710 these register are accessed by | |
2360 | * mapping BAR #1 | |
2361 | */ | |
2362 | int bnx2i_map_ep_dbell_regs(struct bnx2i_endpoint *ep) | |
2363 | { | |
2364 | u32 cid_num; | |
2365 | u32 reg_off; | |
2366 | u32 first_l4l5; | |
2367 | u32 ctx_sz; | |
2368 | u32 config2; | |
2369 | resource_size_t reg_base; | |
2370 | ||
2371 | cid_num = bnx2i_get_cid_num(ep); | |
2372 | ||
2373 | if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { | |
2374 | reg_base = pci_resource_start(ep->hba->pcidev, | |
2375 | BNX2X_DOORBELL_PCI_BAR); | |
2376 | reg_off = PAGE_SIZE * (cid_num & 0x1FFFF) + DPM_TRIGER_TYPE; | |
2377 | ep->qp.ctx_base = ioremap_nocache(reg_base + reg_off, 4); | |
2378 | goto arm_cq; | |
2379 | } | |
2380 | ||
2381 | reg_base = ep->hba->netdev->base_addr; | |
2382 | if ((test_bit(BNX2I_NX2_DEV_5709, &ep->hba->cnic_dev_type)) && | |
2383 | (ep->hba->mail_queue_access == BNX2I_MQ_BIN_MODE)) { | |
2384 | config2 = REG_RD(ep->hba, BNX2_MQ_CONFIG2); | |
2385 | first_l4l5 = config2 & BNX2_MQ_CONFIG2_FIRST_L4L5; | |
2386 | ctx_sz = (config2 & BNX2_MQ_CONFIG2_CONT_SZ) >> 3; | |
2387 | if (ctx_sz) | |
2388 | reg_off = CTX_OFFSET + MAX_CID_CNT * MB_KERNEL_CTX_SIZE | |
2389 | + PAGE_SIZE * | |
2390 | (((cid_num - first_l4l5) / ctx_sz) + 256); | |
2391 | else | |
2392 | reg_off = CTX_OFFSET + (MB_KERNEL_CTX_SIZE * cid_num); | |
2393 | } else | |
2394 | /* 5709 device in normal node and 5706/5708 devices */ | |
2395 | reg_off = CTX_OFFSET + (MB_KERNEL_CTX_SIZE * cid_num); | |
2396 | ||
2397 | ep->qp.ctx_base = ioremap_nocache(reg_base + reg_off, | |
2398 | MB_KERNEL_CTX_SIZE); | |
2399 | if (!ep->qp.ctx_base) | |
2400 | return -ENOMEM; | |
2401 | ||
2402 | arm_cq: | |
2403 | bnx2i_arm_cq_event_coalescing(ep, CNIC_ARM_CQE); | |
2404 | return 0; | |
2405 | } |