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cf4e6363 MC |
1 | /* bnx2i_hwi.c: Broadcom NetXtreme II iSCSI driver. |
2 | * | |
11cec1e2 | 3 | * Copyright (c) 2006 - 2010 Broadcom Corporation |
cf4e6363 MC |
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) | |
11cec1e2 | 12 | * Maintained by: Eddie Wai (eddie.wai@broadcom.com) |
cf4e6363 MC |
13 | */ |
14 | ||
5a0e3ad6 | 15 | #include <linux/gfp.h> |
cf4e6363 MC |
16 | #include <scsi/scsi_tcq.h> |
17 | #include <scsi/libiscsi.h> | |
18 | #include "bnx2i.h" | |
19 | ||
20 | /** | |
21 | * bnx2i_get_cid_num - get cid from ep | |
22 | * @ep: endpoint pointer | |
23 | * | |
24 | * Only applicable to 57710 family of devices | |
25 | */ | |
26 | static u32 bnx2i_get_cid_num(struct bnx2i_endpoint *ep) | |
27 | { | |
28 | u32 cid; | |
29 | ||
30 | if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) | |
31 | cid = ep->ep_cid; | |
32 | else | |
33 | cid = GET_CID_NUM(ep->ep_cid); | |
34 | return cid; | |
35 | } | |
36 | ||
37 | ||
38 | /** | |
39 | * bnx2i_adjust_qp_size - Adjust SQ/RQ/CQ size for 57710 device type | |
40 | * @hba: Adapter for which adjustments is to be made | |
41 | * | |
42 | * Only applicable to 57710 family of devices | |
43 | */ | |
44 | static void bnx2i_adjust_qp_size(struct bnx2i_hba *hba) | |
45 | { | |
46 | u32 num_elements_per_pg; | |
47 | ||
48 | if (test_bit(BNX2I_NX2_DEV_5706, &hba->cnic_dev_type) || | |
49 | test_bit(BNX2I_NX2_DEV_5708, &hba->cnic_dev_type) || | |
50 | test_bit(BNX2I_NX2_DEV_5709, &hba->cnic_dev_type)) { | |
51 | if (!is_power_of_2(hba->max_sqes)) | |
52 | hba->max_sqes = rounddown_pow_of_two(hba->max_sqes); | |
53 | ||
54 | if (!is_power_of_2(hba->max_rqes)) | |
55 | hba->max_rqes = rounddown_pow_of_two(hba->max_rqes); | |
56 | } | |
57 | ||
58 | /* Adjust each queue size if the user selection does not | |
59 | * yield integral num of page buffers | |
60 | */ | |
61 | /* adjust SQ */ | |
62 | num_elements_per_pg = PAGE_SIZE / BNX2I_SQ_WQE_SIZE; | |
63 | if (hba->max_sqes < num_elements_per_pg) | |
64 | hba->max_sqes = num_elements_per_pg; | |
65 | else if (hba->max_sqes % num_elements_per_pg) | |
66 | hba->max_sqes = (hba->max_sqes + num_elements_per_pg - 1) & | |
67 | ~(num_elements_per_pg - 1); | |
68 | ||
69 | /* adjust CQ */ | |
70 | num_elements_per_pg = PAGE_SIZE / BNX2I_CQE_SIZE; | |
71 | if (hba->max_cqes < num_elements_per_pg) | |
72 | hba->max_cqes = num_elements_per_pg; | |
73 | else if (hba->max_cqes % num_elements_per_pg) | |
74 | hba->max_cqes = (hba->max_cqes + num_elements_per_pg - 1) & | |
75 | ~(num_elements_per_pg - 1); | |
76 | ||
77 | /* adjust RQ */ | |
78 | num_elements_per_pg = PAGE_SIZE / BNX2I_RQ_WQE_SIZE; | |
79 | if (hba->max_rqes < num_elements_per_pg) | |
80 | hba->max_rqes = num_elements_per_pg; | |
81 | else if (hba->max_rqes % num_elements_per_pg) | |
82 | hba->max_rqes = (hba->max_rqes + num_elements_per_pg - 1) & | |
83 | ~(num_elements_per_pg - 1); | |
84 | } | |
85 | ||
86 | ||
87 | /** | |
88 | * bnx2i_get_link_state - get network interface link state | |
89 | * @hba: adapter instance pointer | |
90 | * | |
91 | * updates adapter structure flag based on netdev state | |
92 | */ | |
93 | static void bnx2i_get_link_state(struct bnx2i_hba *hba) | |
94 | { | |
95 | if (test_bit(__LINK_STATE_NOCARRIER, &hba->netdev->state)) | |
96 | set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); | |
97 | else | |
98 | clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); | |
99 | } | |
100 | ||
101 | ||
102 | /** | |
103 | * bnx2i_iscsi_license_error - displays iscsi license related error message | |
104 | * @hba: adapter instance pointer | |
105 | * @error_code: error classification | |
106 | * | |
107 | * Puts out an error log when driver is unable to offload iscsi connection | |
108 | * due to license restrictions | |
109 | */ | |
110 | static void bnx2i_iscsi_license_error(struct bnx2i_hba *hba, u32 error_code) | |
111 | { | |
112 | if (error_code == ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED) | |
113 | /* iSCSI offload not supported on this device */ | |
114 | printk(KERN_ERR "bnx2i: iSCSI not supported, dev=%s\n", | |
115 | hba->netdev->name); | |
116 | if (error_code == ISCSI_KCQE_COMPLETION_STATUS_LOM_ISCSI_NOT_ENABLED) | |
117 | /* iSCSI offload not supported on this LOM device */ | |
118 | printk(KERN_ERR "bnx2i: LOM is not enable to " | |
119 | "offload iSCSI connections, dev=%s\n", | |
120 | hba->netdev->name); | |
121 | set_bit(ADAPTER_STATE_INIT_FAILED, &hba->adapter_state); | |
122 | } | |
123 | ||
124 | ||
125 | /** | |
126 | * bnx2i_arm_cq_event_coalescing - arms CQ to enable EQ notification | |
127 | * @ep: endpoint (transport indentifier) structure | |
128 | * @action: action, ARM or DISARM. For now only ARM_CQE is used | |
129 | * | |
130 | * Arm'ing CQ will enable chip to generate global EQ events inorder to interrupt | |
131 | * the driver. EQ event is generated CQ index is hit or at least 1 CQ is | |
132 | * outstanding and on chip timer expires | |
133 | */ | |
134 | void bnx2i_arm_cq_event_coalescing(struct bnx2i_endpoint *ep, u8 action) | |
135 | { | |
136 | struct bnx2i_5771x_cq_db *cq_db; | |
137 | u16 cq_index; | |
8776193b AV |
138 | u16 next_index; |
139 | u32 num_active_cmds; | |
cf4e6363 | 140 | |
8776193b AV |
141 | |
142 | /* Coalesce CQ entries only on 10G devices */ | |
cf4e6363 MC |
143 | if (!test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) |
144 | return; | |
145 | ||
8776193b AV |
146 | /* Do not update CQ DB multiple times before firmware writes |
147 | * '0xFFFF' to CQDB->SQN field. Deviation may cause spurious | |
148 | * interrupts and other unwanted results | |
149 | */ | |
150 | cq_db = (struct bnx2i_5771x_cq_db *) ep->qp.cq_pgtbl_virt; | |
151 | if (cq_db->sqn[0] && cq_db->sqn[0] != 0xFFFF) | |
152 | return; | |
153 | ||
cf4e6363 | 154 | if (action == CNIC_ARM_CQE) { |
8776193b AV |
155 | num_active_cmds = ep->num_active_cmds; |
156 | if (num_active_cmds <= event_coal_min) | |
157 | next_index = 1; | |
158 | else | |
159 | next_index = event_coal_min + | |
160 | (num_active_cmds - event_coal_min) / event_coal_div; | |
161 | if (!next_index) | |
162 | next_index = 1; | |
163 | cq_index = ep->qp.cqe_exp_seq_sn + next_index - 1; | |
164 | if (cq_index > ep->qp.cqe_size * 2) | |
165 | cq_index -= ep->qp.cqe_size * 2; | |
166 | if (!cq_index) | |
cf4e6363 | 167 | cq_index = 1; |
8776193b AV |
168 | |
169 | cq_db->sqn[0] = cq_index; | |
cf4e6363 MC |
170 | } |
171 | } | |
172 | ||
173 | ||
174 | /** | |
175 | * bnx2i_get_rq_buf - copy RQ buffer contents to driver buffer | |
25985edc | 176 | * @conn: iscsi connection on which RQ event occurred |
cf4e6363 MC |
177 | * @ptr: driver buffer to which RQ buffer contents is to |
178 | * be copied | |
179 | * @len: length of valid data inside RQ buf | |
180 | * | |
181 | * Copies RQ buffer contents from shared (DMA'able) memory region to | |
182 | * driver buffer. RQ is used to DMA unsolicitated iscsi pdu's and | |
183 | * scsi sense info | |
184 | */ | |
185 | void bnx2i_get_rq_buf(struct bnx2i_conn *bnx2i_conn, char *ptr, int len) | |
186 | { | |
187 | if (!bnx2i_conn->ep->qp.rqe_left) | |
188 | return; | |
189 | ||
190 | bnx2i_conn->ep->qp.rqe_left--; | |
191 | memcpy(ptr, (u8 *) bnx2i_conn->ep->qp.rq_cons_qe, len); | |
192 | if (bnx2i_conn->ep->qp.rq_cons_qe == bnx2i_conn->ep->qp.rq_last_qe) { | |
193 | bnx2i_conn->ep->qp.rq_cons_qe = bnx2i_conn->ep->qp.rq_first_qe; | |
194 | bnx2i_conn->ep->qp.rq_cons_idx = 0; | |
195 | } else { | |
196 | bnx2i_conn->ep->qp.rq_cons_qe++; | |
197 | bnx2i_conn->ep->qp.rq_cons_idx++; | |
198 | } | |
199 | } | |
200 | ||
201 | ||
202 | static void bnx2i_ring_577xx_doorbell(struct bnx2i_conn *conn) | |
203 | { | |
204 | struct bnx2i_5771x_dbell dbell; | |
205 | u32 msg; | |
206 | ||
207 | memset(&dbell, 0, sizeof(dbell)); | |
208 | dbell.dbell.header = (B577XX_ISCSI_CONNECTION_TYPE << | |
209 | B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT); | |
210 | msg = *((u32 *)&dbell); | |
211 | /* TODO : get doorbell register mapping */ | |
212 | writel(cpu_to_le32(msg), conn->ep->qp.ctx_base); | |
213 | } | |
214 | ||
215 | ||
216 | /** | |
217 | * bnx2i_put_rq_buf - Replenish RQ buffer, if required ring on chip doorbell | |
218 | * @conn: iscsi connection on which event to post | |
219 | * @count: number of RQ buffer being posted to chip | |
220 | * | |
221 | * No need to ring hardware doorbell for 57710 family of devices | |
222 | */ | |
223 | void bnx2i_put_rq_buf(struct bnx2i_conn *bnx2i_conn, int count) | |
224 | { | |
225 | struct bnx2i_5771x_sq_rq_db *rq_db; | |
226 | u16 hi_bit = (bnx2i_conn->ep->qp.rq_prod_idx & 0x8000); | |
227 | struct bnx2i_endpoint *ep = bnx2i_conn->ep; | |
228 | ||
229 | ep->qp.rqe_left += count; | |
230 | ep->qp.rq_prod_idx &= 0x7FFF; | |
231 | ep->qp.rq_prod_idx += count; | |
232 | ||
233 | if (ep->qp.rq_prod_idx > bnx2i_conn->hba->max_rqes) { | |
234 | ep->qp.rq_prod_idx %= bnx2i_conn->hba->max_rqes; | |
235 | if (!hi_bit) | |
236 | ep->qp.rq_prod_idx |= 0x8000; | |
237 | } else | |
238 | ep->qp.rq_prod_idx |= hi_bit; | |
239 | ||
240 | if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { | |
241 | rq_db = (struct bnx2i_5771x_sq_rq_db *) ep->qp.rq_pgtbl_virt; | |
242 | rq_db->prod_idx = ep->qp.rq_prod_idx; | |
243 | /* no need to ring hardware doorbell for 57710 */ | |
244 | } else { | |
245 | writew(ep->qp.rq_prod_idx, | |
246 | ep->qp.ctx_base + CNIC_RECV_DOORBELL); | |
247 | } | |
248 | mmiowb(); | |
249 | } | |
250 | ||
251 | ||
252 | /** | |
253 | * bnx2i_ring_sq_dbell - Ring SQ doorbell to wake-up the processing engine | |
254 | * @conn: iscsi connection to which new SQ entries belong | |
255 | * @count: number of SQ WQEs to post | |
256 | * | |
257 | * SQ DB is updated in host memory and TX Doorbell is rung for 57710 family | |
258 | * of devices. For 5706/5708/5709 new SQ WQE count is written into the | |
259 | * doorbell register | |
260 | */ | |
261 | static void bnx2i_ring_sq_dbell(struct bnx2i_conn *bnx2i_conn, int count) | |
262 | { | |
263 | struct bnx2i_5771x_sq_rq_db *sq_db; | |
264 | struct bnx2i_endpoint *ep = bnx2i_conn->ep; | |
265 | ||
266 | ep->num_active_cmds++; | |
267 | wmb(); /* flush SQ WQE memory before the doorbell is rung */ | |
268 | if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { | |
269 | sq_db = (struct bnx2i_5771x_sq_rq_db *) ep->qp.sq_pgtbl_virt; | |
270 | sq_db->prod_idx = ep->qp.sq_prod_idx; | |
271 | bnx2i_ring_577xx_doorbell(bnx2i_conn); | |
272 | } else | |
273 | writew(count, ep->qp.ctx_base + CNIC_SEND_DOORBELL); | |
274 | ||
275 | mmiowb(); /* flush posted PCI writes */ | |
276 | } | |
277 | ||
278 | ||
279 | /** | |
280 | * bnx2i_ring_dbell_update_sq_params - update SQ driver parameters | |
281 | * @conn: iscsi connection to which new SQ entries belong | |
282 | * @count: number of SQ WQEs to post | |
283 | * | |
284 | * this routine will update SQ driver parameters and ring the doorbell | |
285 | */ | |
286 | static void bnx2i_ring_dbell_update_sq_params(struct bnx2i_conn *bnx2i_conn, | |
287 | int count) | |
288 | { | |
289 | int tmp_cnt; | |
290 | ||
291 | if (count == 1) { | |
292 | if (bnx2i_conn->ep->qp.sq_prod_qe == | |
293 | bnx2i_conn->ep->qp.sq_last_qe) | |
294 | bnx2i_conn->ep->qp.sq_prod_qe = | |
295 | bnx2i_conn->ep->qp.sq_first_qe; | |
296 | else | |
297 | bnx2i_conn->ep->qp.sq_prod_qe++; | |
298 | } else { | |
299 | if ((bnx2i_conn->ep->qp.sq_prod_qe + count) <= | |
300 | bnx2i_conn->ep->qp.sq_last_qe) | |
301 | bnx2i_conn->ep->qp.sq_prod_qe += count; | |
302 | else { | |
303 | tmp_cnt = bnx2i_conn->ep->qp.sq_last_qe - | |
304 | bnx2i_conn->ep->qp.sq_prod_qe; | |
305 | bnx2i_conn->ep->qp.sq_prod_qe = | |
306 | &bnx2i_conn->ep->qp.sq_first_qe[count - | |
307 | (tmp_cnt + 1)]; | |
308 | } | |
309 | } | |
310 | bnx2i_conn->ep->qp.sq_prod_idx += count; | |
311 | /* Ring the doorbell */ | |
312 | bnx2i_ring_sq_dbell(bnx2i_conn, bnx2i_conn->ep->qp.sq_prod_idx); | |
313 | } | |
314 | ||
315 | ||
316 | /** | |
317 | * bnx2i_send_iscsi_login - post iSCSI login request MP WQE to hardware | |
318 | * @conn: iscsi connection | |
319 | * @cmd: driver command structure which is requesting | |
320 | * a WQE to sent to chip for further processing | |
321 | * | |
322 | * prepare and post an iSCSI Login request WQE to CNIC firmware | |
323 | */ | |
324 | int bnx2i_send_iscsi_login(struct bnx2i_conn *bnx2i_conn, | |
325 | struct iscsi_task *task) | |
326 | { | |
327 | struct bnx2i_cmd *bnx2i_cmd; | |
328 | struct bnx2i_login_request *login_wqe; | |
329 | struct iscsi_login *login_hdr; | |
330 | u32 dword; | |
331 | ||
332 | bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data; | |
333 | login_hdr = (struct iscsi_login *)task->hdr; | |
334 | login_wqe = (struct bnx2i_login_request *) | |
335 | bnx2i_conn->ep->qp.sq_prod_qe; | |
336 | ||
337 | login_wqe->op_code = login_hdr->opcode; | |
338 | login_wqe->op_attr = login_hdr->flags; | |
339 | login_wqe->version_max = login_hdr->max_version; | |
340 | login_wqe->version_min = login_hdr->min_version; | |
341 | login_wqe->data_length = ntoh24(login_hdr->dlength); | |
342 | login_wqe->isid_lo = *((u32 *) login_hdr->isid); | |
343 | login_wqe->isid_hi = *((u16 *) login_hdr->isid + 2); | |
344 | login_wqe->tsih = login_hdr->tsih; | |
345 | login_wqe->itt = task->itt | | |
346 | (ISCSI_TASK_TYPE_MPATH << ISCSI_LOGIN_REQUEST_TYPE_SHIFT); | |
347 | login_wqe->cid = login_hdr->cid; | |
348 | ||
349 | login_wqe->cmd_sn = be32_to_cpu(login_hdr->cmdsn); | |
350 | login_wqe->exp_stat_sn = be32_to_cpu(login_hdr->exp_statsn); | |
2e15efc7 | 351 | login_wqe->flags = ISCSI_LOGIN_REQUEST_UPDATE_EXP_STAT_SN; |
cf4e6363 MC |
352 | |
353 | login_wqe->resp_bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.resp_bd_dma; | |
354 | login_wqe->resp_bd_list_addr_hi = | |
355 | (u32) ((u64) bnx2i_conn->gen_pdu.resp_bd_dma >> 32); | |
356 | ||
357 | dword = ((1 << ISCSI_LOGIN_REQUEST_NUM_RESP_BDS_SHIFT) | | |
358 | (bnx2i_conn->gen_pdu.resp_buf_size << | |
359 | ISCSI_LOGIN_REQUEST_RESP_BUFFER_LENGTH_SHIFT)); | |
360 | login_wqe->resp_buffer = dword; | |
cf4e6363 MC |
361 | login_wqe->bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.req_bd_dma; |
362 | login_wqe->bd_list_addr_hi = | |
363 | (u32) ((u64) bnx2i_conn->gen_pdu.req_bd_dma >> 32); | |
364 | login_wqe->num_bds = 1; | |
365 | login_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ | |
366 | ||
367 | bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); | |
368 | return 0; | |
369 | } | |
370 | ||
371 | /** | |
372 | * bnx2i_send_iscsi_tmf - post iSCSI task management request MP WQE to hardware | |
373 | * @conn: iscsi connection | |
374 | * @mtask: driver command structure which is requesting | |
375 | * a WQE to sent to chip for further processing | |
376 | * | |
377 | * prepare and post an iSCSI Login request WQE to CNIC firmware | |
378 | */ | |
379 | int bnx2i_send_iscsi_tmf(struct bnx2i_conn *bnx2i_conn, | |
380 | struct iscsi_task *mtask) | |
381 | { | |
382 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
383 | struct iscsi_tm *tmfabort_hdr; | |
384 | struct scsi_cmnd *ref_sc; | |
385 | struct iscsi_task *ctask; | |
386 | struct bnx2i_cmd *bnx2i_cmd; | |
387 | struct bnx2i_tmf_request *tmfabort_wqe; | |
388 | u32 dword; | |
cf464fc5 | 389 | u32 scsi_lun[2]; |
cf4e6363 MC |
390 | |
391 | bnx2i_cmd = (struct bnx2i_cmd *)mtask->dd_data; | |
392 | tmfabort_hdr = (struct iscsi_tm *)mtask->hdr; | |
393 | tmfabort_wqe = (struct bnx2i_tmf_request *) | |
394 | bnx2i_conn->ep->qp.sq_prod_qe; | |
395 | ||
396 | tmfabort_wqe->op_code = tmfabort_hdr->opcode; | |
c47b4012 | 397 | tmfabort_wqe->op_attr = tmfabort_hdr->flags; |
cf4e6363 MC |
398 | |
399 | tmfabort_wqe->itt = (mtask->itt | (ISCSI_TASK_TYPE_MPATH << 14)); | |
400 | tmfabort_wqe->reserved2 = 0; | |
401 | tmfabort_wqe->cmd_sn = be32_to_cpu(tmfabort_hdr->cmdsn); | |
402 | ||
c47b4012 EW |
403 | switch (tmfabort_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) { |
404 | case ISCSI_TM_FUNC_ABORT_TASK: | |
405 | case ISCSI_TM_FUNC_TASK_REASSIGN: | |
406 | ctask = iscsi_itt_to_task(conn, tmfabort_hdr->rtt); | |
407 | if (!ctask || !ctask->sc) | |
408 | /* | |
409 | * the iscsi layer must have completed the cmd while | |
410 | * was starting up. | |
411 | * | |
412 | * Note: In the case of a SCSI cmd timeout, the task's | |
413 | * sc is still active; hence ctask->sc != 0 | |
414 | * In this case, the task must be aborted | |
415 | */ | |
416 | return 0; | |
417 | ||
418 | ref_sc = ctask->sc; | |
419 | if (ref_sc->sc_data_direction == DMA_TO_DEVICE) | |
420 | dword = (ISCSI_TASK_TYPE_WRITE << | |
421 | ISCSI_CMD_REQUEST_TYPE_SHIFT); | |
422 | else | |
423 | dword = (ISCSI_TASK_TYPE_READ << | |
424 | ISCSI_CMD_REQUEST_TYPE_SHIFT); | |
425 | tmfabort_wqe->ref_itt = (dword | | |
426 | (tmfabort_hdr->rtt & ISCSI_ITT_MASK)); | |
427 | break; | |
428 | default: | |
429 | tmfabort_wqe->ref_itt = RESERVED_ITT; | |
430 | } | |
cf464fc5 EW |
431 | memcpy(scsi_lun, tmfabort_hdr->lun, sizeof(struct scsi_lun)); |
432 | tmfabort_wqe->lun[0] = be32_to_cpu(scsi_lun[0]); | |
433 | tmfabort_wqe->lun[1] = be32_to_cpu(scsi_lun[1]); | |
434 | ||
cf4e6363 MC |
435 | tmfabort_wqe->ref_cmd_sn = be32_to_cpu(tmfabort_hdr->refcmdsn); |
436 | ||
437 | tmfabort_wqe->bd_list_addr_lo = (u32) bnx2i_conn->hba->mp_bd_dma; | |
438 | tmfabort_wqe->bd_list_addr_hi = (u32) | |
439 | ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); | |
440 | tmfabort_wqe->num_bds = 1; | |
441 | tmfabort_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ | |
442 | ||
443 | bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); | |
444 | return 0; | |
445 | } | |
446 | ||
09813ba5 EW |
447 | /** |
448 | * bnx2i_send_iscsi_text - post iSCSI text WQE to hardware | |
449 | * @conn: iscsi connection | |
450 | * @mtask: driver command structure which is requesting | |
451 | * a WQE to sent to chip for further processing | |
452 | * | |
453 | * prepare and post an iSCSI Text request WQE to CNIC firmware | |
454 | */ | |
455 | int bnx2i_send_iscsi_text(struct bnx2i_conn *bnx2i_conn, | |
456 | struct iscsi_task *mtask) | |
457 | { | |
458 | struct bnx2i_cmd *bnx2i_cmd; | |
459 | struct bnx2i_text_request *text_wqe; | |
460 | struct iscsi_text *text_hdr; | |
461 | u32 dword; | |
462 | ||
463 | bnx2i_cmd = (struct bnx2i_cmd *)mtask->dd_data; | |
464 | text_hdr = (struct iscsi_text *)mtask->hdr; | |
465 | text_wqe = (struct bnx2i_text_request *) bnx2i_conn->ep->qp.sq_prod_qe; | |
466 | ||
467 | memset(text_wqe, 0, sizeof(struct bnx2i_text_request)); | |
468 | ||
469 | text_wqe->op_code = text_hdr->opcode; | |
470 | text_wqe->op_attr = text_hdr->flags; | |
471 | text_wqe->data_length = ntoh24(text_hdr->dlength); | |
472 | text_wqe->itt = mtask->itt | | |
473 | (ISCSI_TASK_TYPE_MPATH << ISCSI_TEXT_REQUEST_TYPE_SHIFT); | |
474 | text_wqe->ttt = be32_to_cpu(text_hdr->ttt); | |
475 | ||
476 | text_wqe->cmd_sn = be32_to_cpu(text_hdr->cmdsn); | |
477 | ||
478 | text_wqe->resp_bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.resp_bd_dma; | |
479 | text_wqe->resp_bd_list_addr_hi = | |
480 | (u32) ((u64) bnx2i_conn->gen_pdu.resp_bd_dma >> 32); | |
481 | ||
482 | dword = ((1 << ISCSI_TEXT_REQUEST_NUM_RESP_BDS_SHIFT) | | |
483 | (bnx2i_conn->gen_pdu.resp_buf_size << | |
484 | ISCSI_TEXT_REQUEST_RESP_BUFFER_LENGTH_SHIFT)); | |
485 | text_wqe->resp_buffer = dword; | |
486 | text_wqe->bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.req_bd_dma; | |
487 | text_wqe->bd_list_addr_hi = | |
488 | (u32) ((u64) bnx2i_conn->gen_pdu.req_bd_dma >> 32); | |
489 | text_wqe->num_bds = 1; | |
490 | text_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ | |
491 | ||
492 | bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); | |
493 | return 0; | |
494 | } | |
495 | ||
496 | ||
cf4e6363 MC |
497 | /** |
498 | * bnx2i_send_iscsi_scsicmd - post iSCSI scsicmd request WQE to hardware | |
499 | * @conn: iscsi connection | |
500 | * @cmd: driver command structure which is requesting | |
501 | * a WQE to sent to chip for further processing | |
502 | * | |
503 | * prepare and post an iSCSI SCSI-CMD request WQE to CNIC firmware | |
504 | */ | |
505 | int bnx2i_send_iscsi_scsicmd(struct bnx2i_conn *bnx2i_conn, | |
506 | struct bnx2i_cmd *cmd) | |
507 | { | |
508 | struct bnx2i_cmd_request *scsi_cmd_wqe; | |
509 | ||
510 | scsi_cmd_wqe = (struct bnx2i_cmd_request *) | |
511 | bnx2i_conn->ep->qp.sq_prod_qe; | |
512 | memcpy(scsi_cmd_wqe, &cmd->req, sizeof(struct bnx2i_cmd_request)); | |
513 | scsi_cmd_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ | |
514 | ||
515 | bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); | |
516 | return 0; | |
517 | } | |
518 | ||
519 | /** | |
520 | * bnx2i_send_iscsi_nopout - post iSCSI NOPOUT request WQE to hardware | |
521 | * @conn: iscsi connection | |
522 | * @cmd: driver command structure which is requesting | |
523 | * a WQE to sent to chip for further processing | |
cf4e6363 MC |
524 | * @datap: payload buffer pointer |
525 | * @data_len: payload data length | |
526 | * @unsol: indicated whether nopout pdu is unsolicited pdu or | |
527 | * in response to target's NOPIN w/ TTT != FFFFFFFF | |
528 | * | |
529 | * prepare and post a nopout request WQE to CNIC firmware | |
530 | */ | |
531 | int bnx2i_send_iscsi_nopout(struct bnx2i_conn *bnx2i_conn, | |
39304072 | 532 | struct iscsi_task *task, |
cf4e6363 MC |
533 | char *datap, int data_len, int unsol) |
534 | { | |
535 | struct bnx2i_endpoint *ep = bnx2i_conn->ep; | |
536 | struct bnx2i_cmd *bnx2i_cmd; | |
537 | struct bnx2i_nop_out_request *nopout_wqe; | |
538 | struct iscsi_nopout *nopout_hdr; | |
539 | ||
540 | bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data; | |
541 | nopout_hdr = (struct iscsi_nopout *)task->hdr; | |
542 | nopout_wqe = (struct bnx2i_nop_out_request *)ep->qp.sq_prod_qe; | |
70e14722 EW |
543 | |
544 | memset(nopout_wqe, 0x00, sizeof(struct bnx2i_nop_out_request)); | |
545 | ||
cf4e6363 MC |
546 | nopout_wqe->op_code = nopout_hdr->opcode; |
547 | nopout_wqe->op_attr = ISCSI_FLAG_CMD_FINAL; | |
548 | memcpy(nopout_wqe->lun, nopout_hdr->lun, 8); | |
549 | ||
550 | if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { | |
ee15bd2d | 551 | u32 tmp = nopout_wqe->lun[0]; |
cf4e6363 | 552 | /* 57710 requires LUN field to be swapped */ |
ee15bd2d EW |
553 | nopout_wqe->lun[0] = nopout_wqe->lun[1]; |
554 | nopout_wqe->lun[1] = tmp; | |
cf4e6363 MC |
555 | } |
556 | ||
557 | nopout_wqe->itt = ((u16)task->itt | | |
558 | (ISCSI_TASK_TYPE_MPATH << | |
559 | ISCSI_TMF_REQUEST_TYPE_SHIFT)); | |
39304072 | 560 | nopout_wqe->ttt = nopout_hdr->ttt; |
cf4e6363 MC |
561 | nopout_wqe->flags = 0; |
562 | if (!unsol) | |
563 | nopout_wqe->flags = ISCSI_NOP_OUT_REQUEST_LOCAL_COMPLETION; | |
564 | else if (nopout_hdr->itt == RESERVED_ITT) | |
565 | nopout_wqe->flags = ISCSI_NOP_OUT_REQUEST_LOCAL_COMPLETION; | |
566 | ||
567 | nopout_wqe->cmd_sn = be32_to_cpu(nopout_hdr->cmdsn); | |
568 | nopout_wqe->data_length = data_len; | |
569 | if (data_len) { | |
570 | /* handle payload data, not required in first release */ | |
571 | printk(KERN_ALERT "NOPOUT: WARNING!! payload len != 0\n"); | |
572 | } else { | |
573 | nopout_wqe->bd_list_addr_lo = (u32) | |
574 | bnx2i_conn->hba->mp_bd_dma; | |
575 | nopout_wqe->bd_list_addr_hi = | |
576 | (u32) ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); | |
577 | nopout_wqe->num_bds = 1; | |
578 | } | |
579 | nopout_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ | |
580 | ||
581 | bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); | |
582 | return 0; | |
583 | } | |
584 | ||
585 | ||
586 | /** | |
587 | * bnx2i_send_iscsi_logout - post iSCSI logout request WQE to hardware | |
588 | * @conn: iscsi connection | |
589 | * @cmd: driver command structure which is requesting | |
590 | * a WQE to sent to chip for further processing | |
591 | * | |
592 | * prepare and post logout request WQE to CNIC firmware | |
593 | */ | |
594 | int bnx2i_send_iscsi_logout(struct bnx2i_conn *bnx2i_conn, | |
595 | struct iscsi_task *task) | |
596 | { | |
597 | struct bnx2i_cmd *bnx2i_cmd; | |
598 | struct bnx2i_logout_request *logout_wqe; | |
599 | struct iscsi_logout *logout_hdr; | |
600 | ||
601 | bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data; | |
602 | logout_hdr = (struct iscsi_logout *)task->hdr; | |
603 | ||
604 | logout_wqe = (struct bnx2i_logout_request *) | |
605 | bnx2i_conn->ep->qp.sq_prod_qe; | |
606 | memset(logout_wqe, 0x00, sizeof(struct bnx2i_logout_request)); | |
607 | ||
608 | logout_wqe->op_code = logout_hdr->opcode; | |
609 | logout_wqe->cmd_sn = be32_to_cpu(logout_hdr->cmdsn); | |
610 | logout_wqe->op_attr = | |
611 | logout_hdr->flags | ISCSI_LOGOUT_REQUEST_ALWAYS_ONE; | |
612 | logout_wqe->itt = ((u16)task->itt | | |
613 | (ISCSI_TASK_TYPE_MPATH << | |
614 | ISCSI_LOGOUT_REQUEST_TYPE_SHIFT)); | |
615 | logout_wqe->data_length = 0; | |
616 | logout_wqe->cid = 0; | |
617 | ||
618 | logout_wqe->bd_list_addr_lo = (u32) bnx2i_conn->hba->mp_bd_dma; | |
619 | logout_wqe->bd_list_addr_hi = (u32) | |
620 | ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); | |
621 | logout_wqe->num_bds = 1; | |
622 | logout_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ | |
623 | ||
2eefb20d EW |
624 | bnx2i_conn->ep->state = EP_STATE_LOGOUT_SENT; |
625 | ||
cf4e6363 MC |
626 | bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); |
627 | return 0; | |
628 | } | |
629 | ||
630 | ||
631 | /** | |
632 | * bnx2i_update_iscsi_conn - post iSCSI logout request WQE to hardware | |
633 | * @conn: iscsi connection which requires iscsi parameter update | |
634 | * | |
635 | * sends down iSCSI Conn Update request to move iSCSI conn to FFP | |
636 | */ | |
637 | void bnx2i_update_iscsi_conn(struct iscsi_conn *conn) | |
638 | { | |
639 | struct bnx2i_conn *bnx2i_conn = conn->dd_data; | |
640 | struct bnx2i_hba *hba = bnx2i_conn->hba; | |
641 | struct kwqe *kwqe_arr[2]; | |
642 | struct iscsi_kwqe_conn_update *update_wqe; | |
643 | struct iscsi_kwqe_conn_update conn_update_kwqe; | |
644 | ||
645 | update_wqe = &conn_update_kwqe; | |
646 | ||
647 | update_wqe->hdr.op_code = ISCSI_KWQE_OPCODE_UPDATE_CONN; | |
648 | update_wqe->hdr.flags = | |
649 | (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); | |
650 | ||
651 | /* 5771x requires conn context id to be passed as is */ | |
652 | if (test_bit(BNX2I_NX2_DEV_57710, &bnx2i_conn->ep->hba->cnic_dev_type)) | |
653 | update_wqe->context_id = bnx2i_conn->ep->ep_cid; | |
654 | else | |
655 | update_wqe->context_id = (bnx2i_conn->ep->ep_cid >> 7); | |
656 | update_wqe->conn_flags = 0; | |
657 | if (conn->hdrdgst_en) | |
658 | update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_HEADER_DIGEST; | |
659 | if (conn->datadgst_en) | |
660 | update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_DATA_DIGEST; | |
661 | if (conn->session->initial_r2t_en) | |
662 | update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_INITIAL_R2T; | |
663 | if (conn->session->imm_data_en) | |
664 | update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_IMMEDIATE_DATA; | |
665 | ||
666 | update_wqe->max_send_pdu_length = conn->max_xmit_dlength; | |
667 | update_wqe->max_recv_pdu_length = conn->max_recv_dlength; | |
668 | update_wqe->first_burst_length = conn->session->first_burst; | |
669 | update_wqe->max_burst_length = conn->session->max_burst; | |
670 | update_wqe->exp_stat_sn = conn->exp_statsn; | |
671 | update_wqe->max_outstanding_r2ts = conn->session->max_r2t; | |
672 | update_wqe->session_error_recovery_level = conn->session->erl; | |
673 | iscsi_conn_printk(KERN_ALERT, conn, | |
674 | "bnx2i: conn update - MBL 0x%x FBL 0x%x" | |
675 | "MRDSL_I 0x%x MRDSL_T 0x%x \n", | |
676 | update_wqe->max_burst_length, | |
677 | update_wqe->first_burst_length, | |
678 | update_wqe->max_recv_pdu_length, | |
679 | update_wqe->max_send_pdu_length); | |
680 | ||
681 | kwqe_arr[0] = (struct kwqe *) update_wqe; | |
682 | if (hba->cnic && hba->cnic->submit_kwqes) | |
683 | hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 1); | |
684 | } | |
685 | ||
686 | ||
687 | /** | |
688 | * bnx2i_ep_ofld_timer - post iSCSI logout request WQE to hardware | |
689 | * @data: endpoint (transport handle) structure pointer | |
690 | * | |
691 | * routine to handle connection offload/destroy request timeout | |
692 | */ | |
693 | void bnx2i_ep_ofld_timer(unsigned long data) | |
694 | { | |
695 | struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) data; | |
696 | ||
697 | if (ep->state == EP_STATE_OFLD_START) { | |
698 | printk(KERN_ALERT "ofld_timer: CONN_OFLD timeout\n"); | |
699 | ep->state = EP_STATE_OFLD_FAILED; | |
700 | } else if (ep->state == EP_STATE_DISCONN_START) { | |
701 | printk(KERN_ALERT "ofld_timer: CONN_DISCON timeout\n"); | |
702 | ep->state = EP_STATE_DISCONN_TIMEDOUT; | |
703 | } else if (ep->state == EP_STATE_CLEANUP_START) { | |
704 | printk(KERN_ALERT "ofld_timer: CONN_CLEANUP timeout\n"); | |
705 | ep->state = EP_STATE_CLEANUP_FAILED; | |
706 | } | |
707 | ||
708 | wake_up_interruptible(&ep->ofld_wait); | |
709 | } | |
710 | ||
711 | ||
712 | static int bnx2i_power_of2(u32 val) | |
713 | { | |
714 | u32 power = 0; | |
715 | if (val & (val - 1)) | |
716 | return power; | |
717 | val--; | |
718 | while (val) { | |
719 | val = val >> 1; | |
720 | power++; | |
721 | } | |
722 | return power; | |
723 | } | |
724 | ||
725 | ||
726 | /** | |
727 | * bnx2i_send_cmd_cleanup_req - send iscsi cmd context clean-up request | |
728 | * @hba: adapter structure pointer | |
729 | * @cmd: driver command structure which is requesting | |
730 | * a WQE to sent to chip for further processing | |
731 | * | |
732 | * prepares and posts CONN_OFLD_REQ1/2 KWQE | |
733 | */ | |
734 | void bnx2i_send_cmd_cleanup_req(struct bnx2i_hba *hba, struct bnx2i_cmd *cmd) | |
735 | { | |
736 | struct bnx2i_cleanup_request *cmd_cleanup; | |
737 | ||
738 | cmd_cleanup = | |
739 | (struct bnx2i_cleanup_request *)cmd->conn->ep->qp.sq_prod_qe; | |
740 | memset(cmd_cleanup, 0x00, sizeof(struct bnx2i_cleanup_request)); | |
741 | ||
742 | cmd_cleanup->op_code = ISCSI_OPCODE_CLEANUP_REQUEST; | |
743 | cmd_cleanup->itt = cmd->req.itt; | |
744 | cmd_cleanup->cq_index = 0; /* CQ# used for completion, 5771x only */ | |
745 | ||
746 | bnx2i_ring_dbell_update_sq_params(cmd->conn, 1); | |
747 | } | |
748 | ||
749 | ||
750 | /** | |
751 | * bnx2i_send_conn_destroy - initiates iscsi connection teardown process | |
752 | * @hba: adapter structure pointer | |
753 | * @ep: endpoint (transport indentifier) structure | |
754 | * | |
755 | * this routine prepares and posts CONN_OFLD_REQ1/2 KWQE to initiate | |
756 | * iscsi connection context clean-up process | |
757 | */ | |
bee34877 | 758 | int bnx2i_send_conn_destroy(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) |
cf4e6363 MC |
759 | { |
760 | struct kwqe *kwqe_arr[2]; | |
761 | struct iscsi_kwqe_conn_destroy conn_cleanup; | |
bee34877 | 762 | int rc = -EINVAL; |
cf4e6363 MC |
763 | |
764 | memset(&conn_cleanup, 0x00, sizeof(struct iscsi_kwqe_conn_destroy)); | |
765 | ||
766 | conn_cleanup.hdr.op_code = ISCSI_KWQE_OPCODE_DESTROY_CONN; | |
767 | conn_cleanup.hdr.flags = | |
768 | (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); | |
769 | /* 5771x requires conn context id to be passed as is */ | |
770 | if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) | |
771 | conn_cleanup.context_id = ep->ep_cid; | |
772 | else | |
773 | conn_cleanup.context_id = (ep->ep_cid >> 7); | |
774 | ||
775 | conn_cleanup.reserved0 = (u16)ep->ep_iscsi_cid; | |
776 | ||
777 | kwqe_arr[0] = (struct kwqe *) &conn_cleanup; | |
778 | if (hba->cnic && hba->cnic->submit_kwqes) | |
bee34877 EW |
779 | rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 1); |
780 | ||
781 | return rc; | |
cf4e6363 MC |
782 | } |
783 | ||
784 | ||
785 | /** | |
786 | * bnx2i_570x_send_conn_ofld_req - initiates iscsi conn context setup process | |
787 | * @hba: adapter structure pointer | |
788 | * @ep: endpoint (transport indentifier) structure | |
789 | * | |
790 | * 5706/5708/5709 specific - prepares and posts CONN_OFLD_REQ1/2 KWQE | |
791 | */ | |
bee34877 EW |
792 | static int bnx2i_570x_send_conn_ofld_req(struct bnx2i_hba *hba, |
793 | struct bnx2i_endpoint *ep) | |
cf4e6363 MC |
794 | { |
795 | struct kwqe *kwqe_arr[2]; | |
796 | struct iscsi_kwqe_conn_offload1 ofld_req1; | |
797 | struct iscsi_kwqe_conn_offload2 ofld_req2; | |
798 | dma_addr_t dma_addr; | |
799 | int num_kwqes = 2; | |
800 | u32 *ptbl; | |
bee34877 | 801 | int rc = -EINVAL; |
cf4e6363 MC |
802 | |
803 | ofld_req1.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN1; | |
804 | ofld_req1.hdr.flags = | |
805 | (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); | |
806 | ||
807 | ofld_req1.iscsi_conn_id = (u16) ep->ep_iscsi_cid; | |
808 | ||
809 | dma_addr = ep->qp.sq_pgtbl_phys; | |
810 | ofld_req1.sq_page_table_addr_lo = (u32) dma_addr; | |
811 | ofld_req1.sq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); | |
812 | ||
813 | dma_addr = ep->qp.cq_pgtbl_phys; | |
814 | ofld_req1.cq_page_table_addr_lo = (u32) dma_addr; | |
815 | ofld_req1.cq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); | |
816 | ||
817 | ofld_req2.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN2; | |
818 | ofld_req2.hdr.flags = | |
819 | (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); | |
820 | ||
821 | dma_addr = ep->qp.rq_pgtbl_phys; | |
822 | ofld_req2.rq_page_table_addr_lo = (u32) dma_addr; | |
823 | ofld_req2.rq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); | |
824 | ||
825 | ptbl = (u32 *) ep->qp.sq_pgtbl_virt; | |
826 | ||
827 | ofld_req2.sq_first_pte.hi = *ptbl++; | |
828 | ofld_req2.sq_first_pte.lo = *ptbl; | |
829 | ||
830 | ptbl = (u32 *) ep->qp.cq_pgtbl_virt; | |
831 | ofld_req2.cq_first_pte.hi = *ptbl++; | |
832 | ofld_req2.cq_first_pte.lo = *ptbl; | |
833 | ||
834 | kwqe_arr[0] = (struct kwqe *) &ofld_req1; | |
835 | kwqe_arr[1] = (struct kwqe *) &ofld_req2; | |
836 | ofld_req2.num_additional_wqes = 0; | |
837 | ||
838 | if (hba->cnic && hba->cnic->submit_kwqes) | |
bee34877 EW |
839 | rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes); |
840 | ||
841 | return rc; | |
cf4e6363 MC |
842 | } |
843 | ||
844 | ||
845 | /** | |
846 | * bnx2i_5771x_send_conn_ofld_req - initiates iscsi connection context creation | |
847 | * @hba: adapter structure pointer | |
848 | * @ep: endpoint (transport indentifier) structure | |
849 | * | |
850 | * 57710 specific - prepares and posts CONN_OFLD_REQ1/2 KWQE | |
851 | */ | |
bee34877 EW |
852 | static int bnx2i_5771x_send_conn_ofld_req(struct bnx2i_hba *hba, |
853 | struct bnx2i_endpoint *ep) | |
cf4e6363 MC |
854 | { |
855 | struct kwqe *kwqe_arr[5]; | |
856 | struct iscsi_kwqe_conn_offload1 ofld_req1; | |
857 | struct iscsi_kwqe_conn_offload2 ofld_req2; | |
858 | struct iscsi_kwqe_conn_offload3 ofld_req3[1]; | |
859 | dma_addr_t dma_addr; | |
860 | int num_kwqes = 2; | |
861 | u32 *ptbl; | |
bee34877 | 862 | int rc = -EINVAL; |
cf4e6363 MC |
863 | |
864 | ofld_req1.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN1; | |
865 | ofld_req1.hdr.flags = | |
866 | (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); | |
867 | ||
868 | ofld_req1.iscsi_conn_id = (u16) ep->ep_iscsi_cid; | |
869 | ||
870 | dma_addr = ep->qp.sq_pgtbl_phys + ISCSI_SQ_DB_SIZE; | |
871 | ofld_req1.sq_page_table_addr_lo = (u32) dma_addr; | |
872 | ofld_req1.sq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); | |
873 | ||
874 | dma_addr = ep->qp.cq_pgtbl_phys + ISCSI_CQ_DB_SIZE; | |
875 | ofld_req1.cq_page_table_addr_lo = (u32) dma_addr; | |
876 | ofld_req1.cq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); | |
877 | ||
878 | ofld_req2.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN2; | |
879 | ofld_req2.hdr.flags = | |
880 | (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); | |
881 | ||
882 | dma_addr = ep->qp.rq_pgtbl_phys + ISCSI_RQ_DB_SIZE; | |
883 | ofld_req2.rq_page_table_addr_lo = (u32) dma_addr; | |
884 | ofld_req2.rq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); | |
885 | ||
886 | ptbl = (u32 *)((u8 *)ep->qp.sq_pgtbl_virt + ISCSI_SQ_DB_SIZE); | |
887 | ofld_req2.sq_first_pte.hi = *ptbl++; | |
888 | ofld_req2.sq_first_pte.lo = *ptbl; | |
889 | ||
890 | ptbl = (u32 *)((u8 *)ep->qp.cq_pgtbl_virt + ISCSI_CQ_DB_SIZE); | |
891 | ofld_req2.cq_first_pte.hi = *ptbl++; | |
892 | ofld_req2.cq_first_pte.lo = *ptbl; | |
893 | ||
894 | kwqe_arr[0] = (struct kwqe *) &ofld_req1; | |
895 | kwqe_arr[1] = (struct kwqe *) &ofld_req2; | |
896 | ||
897 | ofld_req2.num_additional_wqes = 1; | |
898 | memset(ofld_req3, 0x00, sizeof(ofld_req3[0])); | |
899 | ptbl = (u32 *)((u8 *)ep->qp.rq_pgtbl_virt + ISCSI_RQ_DB_SIZE); | |
900 | ofld_req3[0].qp_first_pte[0].hi = *ptbl++; | |
901 | ofld_req3[0].qp_first_pte[0].lo = *ptbl; | |
902 | ||
903 | kwqe_arr[2] = (struct kwqe *) ofld_req3; | |
904 | /* need if we decide to go with multiple KCQE's per conn */ | |
905 | num_kwqes += 1; | |
906 | ||
907 | if (hba->cnic && hba->cnic->submit_kwqes) | |
bee34877 EW |
908 | rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes); |
909 | ||
910 | return rc; | |
cf4e6363 MC |
911 | } |
912 | ||
913 | /** | |
914 | * bnx2i_send_conn_ofld_req - initiates iscsi connection context setup process | |
915 | * | |
916 | * @hba: adapter structure pointer | |
917 | * @ep: endpoint (transport indentifier) structure | |
918 | * | |
919 | * this routine prepares and posts CONN_OFLD_REQ1/2 KWQE | |
920 | */ | |
bee34877 | 921 | int bnx2i_send_conn_ofld_req(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) |
cf4e6363 | 922 | { |
bee34877 EW |
923 | int rc; |
924 | ||
cf4e6363 | 925 | if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type)) |
bee34877 | 926 | rc = bnx2i_5771x_send_conn_ofld_req(hba, ep); |
cf4e6363 | 927 | else |
bee34877 EW |
928 | rc = bnx2i_570x_send_conn_ofld_req(hba, ep); |
929 | ||
930 | return rc; | |
cf4e6363 MC |
931 | } |
932 | ||
933 | ||
934 | /** | |
935 | * setup_qp_page_tables - iscsi QP page table setup function | |
936 | * @ep: endpoint (transport indentifier) structure | |
937 | * | |
938 | * Sets up page tables for SQ/RQ/CQ, 1G/sec (5706/5708/5709) devices requires | |
939 | * 64-bit address in big endian format. Whereas 10G/sec (57710) requires | |
940 | * PT in little endian format | |
941 | */ | |
942 | static void setup_qp_page_tables(struct bnx2i_endpoint *ep) | |
943 | { | |
944 | int num_pages; | |
945 | u32 *ptbl; | |
946 | dma_addr_t page; | |
947 | int cnic_dev_10g; | |
948 | ||
949 | if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) | |
950 | cnic_dev_10g = 1; | |
951 | else | |
952 | cnic_dev_10g = 0; | |
953 | ||
954 | /* SQ page table */ | |
955 | memset(ep->qp.sq_pgtbl_virt, 0, ep->qp.sq_pgtbl_size); | |
956 | num_pages = ep->qp.sq_mem_size / PAGE_SIZE; | |
957 | page = ep->qp.sq_phys; | |
958 | ||
959 | if (cnic_dev_10g) | |
960 | ptbl = (u32 *)((u8 *)ep->qp.sq_pgtbl_virt + ISCSI_SQ_DB_SIZE); | |
961 | else | |
962 | ptbl = (u32 *) ep->qp.sq_pgtbl_virt; | |
963 | while (num_pages--) { | |
964 | if (cnic_dev_10g) { | |
965 | /* PTE is written in little endian format for 57710 */ | |
966 | *ptbl = (u32) page; | |
967 | ptbl++; | |
968 | *ptbl = (u32) ((u64) page >> 32); | |
969 | ptbl++; | |
970 | page += PAGE_SIZE; | |
971 | } else { | |
972 | /* PTE is written in big endian format for | |
973 | * 5706/5708/5709 devices */ | |
974 | *ptbl = (u32) ((u64) page >> 32); | |
975 | ptbl++; | |
976 | *ptbl = (u32) page; | |
977 | ptbl++; | |
978 | page += PAGE_SIZE; | |
979 | } | |
980 | } | |
981 | ||
982 | /* RQ page table */ | |
983 | memset(ep->qp.rq_pgtbl_virt, 0, ep->qp.rq_pgtbl_size); | |
984 | num_pages = ep->qp.rq_mem_size / PAGE_SIZE; | |
985 | page = ep->qp.rq_phys; | |
986 | ||
987 | if (cnic_dev_10g) | |
988 | ptbl = (u32 *)((u8 *)ep->qp.rq_pgtbl_virt + ISCSI_RQ_DB_SIZE); | |
989 | else | |
990 | ptbl = (u32 *) ep->qp.rq_pgtbl_virt; | |
991 | while (num_pages--) { | |
992 | if (cnic_dev_10g) { | |
993 | /* PTE is written in little endian format for 57710 */ | |
994 | *ptbl = (u32) page; | |
995 | ptbl++; | |
996 | *ptbl = (u32) ((u64) page >> 32); | |
997 | ptbl++; | |
998 | page += PAGE_SIZE; | |
999 | } else { | |
1000 | /* PTE is written in big endian format for | |
1001 | * 5706/5708/5709 devices */ | |
1002 | *ptbl = (u32) ((u64) page >> 32); | |
1003 | ptbl++; | |
1004 | *ptbl = (u32) page; | |
1005 | ptbl++; | |
1006 | page += PAGE_SIZE; | |
1007 | } | |
1008 | } | |
1009 | ||
1010 | /* CQ page table */ | |
1011 | memset(ep->qp.cq_pgtbl_virt, 0, ep->qp.cq_pgtbl_size); | |
1012 | num_pages = ep->qp.cq_mem_size / PAGE_SIZE; | |
1013 | page = ep->qp.cq_phys; | |
1014 | ||
1015 | if (cnic_dev_10g) | |
1016 | ptbl = (u32 *)((u8 *)ep->qp.cq_pgtbl_virt + ISCSI_CQ_DB_SIZE); | |
1017 | else | |
1018 | ptbl = (u32 *) ep->qp.cq_pgtbl_virt; | |
1019 | while (num_pages--) { | |
1020 | if (cnic_dev_10g) { | |
1021 | /* PTE is written in little endian format for 57710 */ | |
1022 | *ptbl = (u32) page; | |
1023 | ptbl++; | |
1024 | *ptbl = (u32) ((u64) page >> 32); | |
1025 | ptbl++; | |
1026 | page += PAGE_SIZE; | |
1027 | } else { | |
1028 | /* PTE is written in big endian format for | |
1029 | * 5706/5708/5709 devices */ | |
1030 | *ptbl = (u32) ((u64) page >> 32); | |
1031 | ptbl++; | |
1032 | *ptbl = (u32) page; | |
1033 | ptbl++; | |
1034 | page += PAGE_SIZE; | |
1035 | } | |
1036 | } | |
1037 | } | |
1038 | ||
1039 | ||
1040 | /** | |
1041 | * bnx2i_alloc_qp_resc - allocates required resources for QP. | |
1042 | * @hba: adapter structure pointer | |
1043 | * @ep: endpoint (transport indentifier) structure | |
1044 | * | |
1045 | * Allocate QP (transport layer for iSCSI connection) resources, DMA'able | |
1046 | * memory for SQ/RQ/CQ and page tables. EP structure elements such | |
1047 | * as producer/consumer indexes/pointers, queue sizes and page table | |
1048 | * contents are setup | |
1049 | */ | |
1050 | int bnx2i_alloc_qp_resc(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) | |
1051 | { | |
1052 | struct bnx2i_5771x_cq_db *cq_db; | |
1053 | ||
1054 | ep->hba = hba; | |
1055 | ep->conn = NULL; | |
1056 | ep->ep_cid = ep->ep_iscsi_cid = ep->ep_pg_cid = 0; | |
1057 | ||
1058 | /* Allocate page table memory for SQ which is page aligned */ | |
1059 | ep->qp.sq_mem_size = hba->max_sqes * BNX2I_SQ_WQE_SIZE; | |
1060 | ep->qp.sq_mem_size = | |
1061 | (ep->qp.sq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; | |
1062 | ep->qp.sq_pgtbl_size = | |
1063 | (ep->qp.sq_mem_size / PAGE_SIZE) * sizeof(void *); | |
1064 | ep->qp.sq_pgtbl_size = | |
1065 | (ep->qp.sq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK; | |
1066 | ||
1067 | ep->qp.sq_pgtbl_virt = | |
1068 | dma_alloc_coherent(&hba->pcidev->dev, ep->qp.sq_pgtbl_size, | |
1069 | &ep->qp.sq_pgtbl_phys, GFP_KERNEL); | |
1070 | if (!ep->qp.sq_pgtbl_virt) { | |
1071 | printk(KERN_ALERT "bnx2i: unable to alloc SQ PT mem (%d)\n", | |
1072 | ep->qp.sq_pgtbl_size); | |
1073 | goto mem_alloc_err; | |
1074 | } | |
1075 | ||
1076 | /* Allocate memory area for actual SQ element */ | |
1077 | ep->qp.sq_virt = | |
1078 | dma_alloc_coherent(&hba->pcidev->dev, ep->qp.sq_mem_size, | |
1079 | &ep->qp.sq_phys, GFP_KERNEL); | |
1080 | if (!ep->qp.sq_virt) { | |
1081 | printk(KERN_ALERT "bnx2i: unable to alloc SQ BD memory %d\n", | |
1082 | ep->qp.sq_mem_size); | |
1083 | goto mem_alloc_err; | |
1084 | } | |
1085 | ||
1086 | memset(ep->qp.sq_virt, 0x00, ep->qp.sq_mem_size); | |
1087 | ep->qp.sq_first_qe = ep->qp.sq_virt; | |
1088 | ep->qp.sq_prod_qe = ep->qp.sq_first_qe; | |
1089 | ep->qp.sq_cons_qe = ep->qp.sq_first_qe; | |
1090 | ep->qp.sq_last_qe = &ep->qp.sq_first_qe[hba->max_sqes - 1]; | |
1091 | ep->qp.sq_prod_idx = 0; | |
1092 | ep->qp.sq_cons_idx = 0; | |
1093 | ep->qp.sqe_left = hba->max_sqes; | |
1094 | ||
1095 | /* Allocate page table memory for CQ which is page aligned */ | |
1096 | ep->qp.cq_mem_size = hba->max_cqes * BNX2I_CQE_SIZE; | |
1097 | ep->qp.cq_mem_size = | |
1098 | (ep->qp.cq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; | |
1099 | ep->qp.cq_pgtbl_size = | |
1100 | (ep->qp.cq_mem_size / PAGE_SIZE) * sizeof(void *); | |
1101 | ep->qp.cq_pgtbl_size = | |
1102 | (ep->qp.cq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK; | |
1103 | ||
1104 | ep->qp.cq_pgtbl_virt = | |
1105 | dma_alloc_coherent(&hba->pcidev->dev, ep->qp.cq_pgtbl_size, | |
1106 | &ep->qp.cq_pgtbl_phys, GFP_KERNEL); | |
1107 | if (!ep->qp.cq_pgtbl_virt) { | |
1108 | printk(KERN_ALERT "bnx2i: unable to alloc CQ PT memory %d\n", | |
1109 | ep->qp.cq_pgtbl_size); | |
1110 | goto mem_alloc_err; | |
1111 | } | |
1112 | ||
1113 | /* Allocate memory area for actual CQ element */ | |
1114 | ep->qp.cq_virt = | |
1115 | dma_alloc_coherent(&hba->pcidev->dev, ep->qp.cq_mem_size, | |
1116 | &ep->qp.cq_phys, GFP_KERNEL); | |
1117 | if (!ep->qp.cq_virt) { | |
1118 | printk(KERN_ALERT "bnx2i: unable to alloc CQ BD memory %d\n", | |
1119 | ep->qp.cq_mem_size); | |
1120 | goto mem_alloc_err; | |
1121 | } | |
1122 | memset(ep->qp.cq_virt, 0x00, ep->qp.cq_mem_size); | |
1123 | ||
1124 | ep->qp.cq_first_qe = ep->qp.cq_virt; | |
1125 | ep->qp.cq_prod_qe = ep->qp.cq_first_qe; | |
1126 | ep->qp.cq_cons_qe = ep->qp.cq_first_qe; | |
1127 | ep->qp.cq_last_qe = &ep->qp.cq_first_qe[hba->max_cqes - 1]; | |
1128 | ep->qp.cq_prod_idx = 0; | |
1129 | ep->qp.cq_cons_idx = 0; | |
1130 | ep->qp.cqe_left = hba->max_cqes; | |
1131 | ep->qp.cqe_exp_seq_sn = ISCSI_INITIAL_SN; | |
1132 | ep->qp.cqe_size = hba->max_cqes; | |
1133 | ||
1134 | /* Invalidate all EQ CQE index, req only for 57710 */ | |
1135 | cq_db = (struct bnx2i_5771x_cq_db *) ep->qp.cq_pgtbl_virt; | |
1136 | memset(cq_db->sqn, 0xFF, sizeof(cq_db->sqn[0]) * BNX2X_MAX_CQS); | |
1137 | ||
1138 | /* Allocate page table memory for RQ which is page aligned */ | |
1139 | ep->qp.rq_mem_size = hba->max_rqes * BNX2I_RQ_WQE_SIZE; | |
1140 | ep->qp.rq_mem_size = | |
1141 | (ep->qp.rq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; | |
1142 | ep->qp.rq_pgtbl_size = | |
1143 | (ep->qp.rq_mem_size / PAGE_SIZE) * sizeof(void *); | |
1144 | ep->qp.rq_pgtbl_size = | |
1145 | (ep->qp.rq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK; | |
1146 | ||
1147 | ep->qp.rq_pgtbl_virt = | |
1148 | dma_alloc_coherent(&hba->pcidev->dev, ep->qp.rq_pgtbl_size, | |
1149 | &ep->qp.rq_pgtbl_phys, GFP_KERNEL); | |
1150 | if (!ep->qp.rq_pgtbl_virt) { | |
1151 | printk(KERN_ALERT "bnx2i: unable to alloc RQ PT mem %d\n", | |
1152 | ep->qp.rq_pgtbl_size); | |
1153 | goto mem_alloc_err; | |
1154 | } | |
1155 | ||
1156 | /* Allocate memory area for actual RQ element */ | |
1157 | ep->qp.rq_virt = | |
1158 | dma_alloc_coherent(&hba->pcidev->dev, ep->qp.rq_mem_size, | |
1159 | &ep->qp.rq_phys, GFP_KERNEL); | |
1160 | if (!ep->qp.rq_virt) { | |
1161 | printk(KERN_ALERT "bnx2i: unable to alloc RQ BD memory %d\n", | |
1162 | ep->qp.rq_mem_size); | |
1163 | goto mem_alloc_err; | |
1164 | } | |
1165 | ||
1166 | ep->qp.rq_first_qe = ep->qp.rq_virt; | |
1167 | ep->qp.rq_prod_qe = ep->qp.rq_first_qe; | |
1168 | ep->qp.rq_cons_qe = ep->qp.rq_first_qe; | |
1169 | ep->qp.rq_last_qe = &ep->qp.rq_first_qe[hba->max_rqes - 1]; | |
1170 | ep->qp.rq_prod_idx = 0x8000; | |
1171 | ep->qp.rq_cons_idx = 0; | |
1172 | ep->qp.rqe_left = hba->max_rqes; | |
1173 | ||
1174 | setup_qp_page_tables(ep); | |
1175 | ||
1176 | return 0; | |
1177 | ||
1178 | mem_alloc_err: | |
1179 | bnx2i_free_qp_resc(hba, ep); | |
1180 | return -ENOMEM; | |
1181 | } | |
1182 | ||
1183 | ||
1184 | ||
1185 | /** | |
1186 | * bnx2i_free_qp_resc - free memory resources held by QP | |
1187 | * @hba: adapter structure pointer | |
1188 | * @ep: endpoint (transport indentifier) structure | |
1189 | * | |
1190 | * Free QP resources - SQ/RQ/CQ memory and page tables. | |
1191 | */ | |
1192 | void bnx2i_free_qp_resc(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) | |
1193 | { | |
1194 | if (ep->qp.ctx_base) { | |
1195 | iounmap(ep->qp.ctx_base); | |
1196 | ep->qp.ctx_base = NULL; | |
1197 | } | |
1198 | /* Free SQ mem */ | |
1199 | if (ep->qp.sq_pgtbl_virt) { | |
1200 | dma_free_coherent(&hba->pcidev->dev, ep->qp.sq_pgtbl_size, | |
1201 | ep->qp.sq_pgtbl_virt, ep->qp.sq_pgtbl_phys); | |
1202 | ep->qp.sq_pgtbl_virt = NULL; | |
1203 | ep->qp.sq_pgtbl_phys = 0; | |
1204 | } | |
1205 | if (ep->qp.sq_virt) { | |
1206 | dma_free_coherent(&hba->pcidev->dev, ep->qp.sq_mem_size, | |
1207 | ep->qp.sq_virt, ep->qp.sq_phys); | |
1208 | ep->qp.sq_virt = NULL; | |
1209 | ep->qp.sq_phys = 0; | |
1210 | } | |
1211 | ||
1212 | /* Free RQ mem */ | |
1213 | if (ep->qp.rq_pgtbl_virt) { | |
1214 | dma_free_coherent(&hba->pcidev->dev, ep->qp.rq_pgtbl_size, | |
1215 | ep->qp.rq_pgtbl_virt, ep->qp.rq_pgtbl_phys); | |
1216 | ep->qp.rq_pgtbl_virt = NULL; | |
1217 | ep->qp.rq_pgtbl_phys = 0; | |
1218 | } | |
1219 | if (ep->qp.rq_virt) { | |
1220 | dma_free_coherent(&hba->pcidev->dev, ep->qp.rq_mem_size, | |
1221 | ep->qp.rq_virt, ep->qp.rq_phys); | |
1222 | ep->qp.rq_virt = NULL; | |
1223 | ep->qp.rq_phys = 0; | |
1224 | } | |
1225 | ||
1226 | /* Free CQ mem */ | |
1227 | if (ep->qp.cq_pgtbl_virt) { | |
1228 | dma_free_coherent(&hba->pcidev->dev, ep->qp.cq_pgtbl_size, | |
1229 | ep->qp.cq_pgtbl_virt, ep->qp.cq_pgtbl_phys); | |
1230 | ep->qp.cq_pgtbl_virt = NULL; | |
1231 | ep->qp.cq_pgtbl_phys = 0; | |
1232 | } | |
1233 | if (ep->qp.cq_virt) { | |
1234 | dma_free_coherent(&hba->pcidev->dev, ep->qp.cq_mem_size, | |
1235 | ep->qp.cq_virt, ep->qp.cq_phys); | |
1236 | ep->qp.cq_virt = NULL; | |
1237 | ep->qp.cq_phys = 0; | |
1238 | } | |
1239 | } | |
1240 | ||
1241 | ||
1242 | /** | |
1243 | * bnx2i_send_fw_iscsi_init_msg - initiates initial handshake with iscsi f/w | |
1244 | * @hba: adapter structure pointer | |
1245 | * | |
1246 | * Send down iscsi_init KWQEs which initiates the initial handshake with the f/w | |
1247 | * This results in iSCSi support validation and on-chip context manager | |
1248 | * initialization. Firmware completes this handshake with a CQE carrying | |
1249 | * the result of iscsi support validation. Parameter carried by | |
1250 | * iscsi init request determines the number of offloaded connection and | |
1251 | * tolerance level for iscsi protocol violation this hba/chip can support | |
1252 | */ | |
1253 | int bnx2i_send_fw_iscsi_init_msg(struct bnx2i_hba *hba) | |
1254 | { | |
1255 | struct kwqe *kwqe_arr[3]; | |
1256 | struct iscsi_kwqe_init1 iscsi_init; | |
1257 | struct iscsi_kwqe_init2 iscsi_init2; | |
1258 | int rc = 0; | |
1259 | u64 mask64; | |
1260 | ||
1261 | bnx2i_adjust_qp_size(hba); | |
1262 | ||
1263 | iscsi_init.flags = | |
1264 | ISCSI_PAGE_SIZE_4K << ISCSI_KWQE_INIT1_PAGE_SIZE_SHIFT; | |
1265 | if (en_tcp_dack) | |
1266 | iscsi_init.flags |= ISCSI_KWQE_INIT1_DELAYED_ACK_ENABLE; | |
1267 | iscsi_init.reserved0 = 0; | |
1268 | iscsi_init.num_cqs = 1; | |
1269 | iscsi_init.hdr.op_code = ISCSI_KWQE_OPCODE_INIT1; | |
1270 | iscsi_init.hdr.flags = | |
1271 | (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); | |
1272 | ||
1273 | iscsi_init.dummy_buffer_addr_lo = (u32) hba->dummy_buf_dma; | |
1274 | iscsi_init.dummy_buffer_addr_hi = | |
1275 | (u32) ((u64) hba->dummy_buf_dma >> 32); | |
1276 | ||
1277 | hba->ctx_ccell_tasks = | |
1278 | ((hba->num_ccell & 0xFFFF) | (hba->max_sqes << 16)); | |
1279 | iscsi_init.num_ccells_per_conn = hba->num_ccell; | |
1280 | iscsi_init.num_tasks_per_conn = hba->max_sqes; | |
1281 | iscsi_init.sq_wqes_per_page = PAGE_SIZE / BNX2I_SQ_WQE_SIZE; | |
1282 | iscsi_init.sq_num_wqes = hba->max_sqes; | |
1283 | iscsi_init.cq_log_wqes_per_page = | |
1284 | (u8) bnx2i_power_of2(PAGE_SIZE / BNX2I_CQE_SIZE); | |
1285 | iscsi_init.cq_num_wqes = hba->max_cqes; | |
1286 | iscsi_init.cq_num_pages = (hba->max_cqes * BNX2I_CQE_SIZE + | |
1287 | (PAGE_SIZE - 1)) / PAGE_SIZE; | |
1288 | iscsi_init.sq_num_pages = (hba->max_sqes * BNX2I_SQ_WQE_SIZE + | |
1289 | (PAGE_SIZE - 1)) / PAGE_SIZE; | |
1290 | iscsi_init.rq_buffer_size = BNX2I_RQ_WQE_SIZE; | |
1291 | iscsi_init.rq_num_wqes = hba->max_rqes; | |
1292 | ||
1293 | ||
1294 | iscsi_init2.hdr.op_code = ISCSI_KWQE_OPCODE_INIT2; | |
1295 | iscsi_init2.hdr.flags = | |
1296 | (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); | |
1297 | iscsi_init2.max_cq_sqn = hba->max_cqes * 2 + 1; | |
1298 | mask64 = 0x0ULL; | |
1299 | mask64 |= ( | |
1300 | /* CISCO MDS */ | |
1301 | (1UL << | |
1302 | ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_NOT_RSRV) | | |
1303 | /* HP MSA1510i */ | |
1304 | (1UL << | |
1305 | ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_EXP_DATASN) | | |
1306 | /* EMC */ | |
1307 | (1ULL << ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_LUN)); | |
1308 | if (error_mask1) | |
1309 | iscsi_init2.error_bit_map[0] = error_mask1; | |
1310 | else | |
1311 | iscsi_init2.error_bit_map[0] = (u32) mask64; | |
1312 | ||
1313 | if (error_mask2) | |
1314 | iscsi_init2.error_bit_map[1] = error_mask2; | |
1315 | else | |
1316 | iscsi_init2.error_bit_map[1] = (u32) (mask64 >> 32); | |
1317 | ||
1318 | iscsi_error_mask = mask64; | |
1319 | ||
1320 | kwqe_arr[0] = (struct kwqe *) &iscsi_init; | |
1321 | kwqe_arr[1] = (struct kwqe *) &iscsi_init2; | |
1322 | ||
1323 | if (hba->cnic && hba->cnic->submit_kwqes) | |
1324 | rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 2); | |
1325 | return rc; | |
1326 | } | |
1327 | ||
1328 | ||
1329 | /** | |
1330 | * bnx2i_process_scsi_cmd_resp - this function handles scsi cmd completion. | |
1331 | * @conn: iscsi connection | |
1332 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1333 | * | |
1334 | * process SCSI CMD Response CQE & complete the request to SCSI-ML | |
1335 | */ | |
1336 | static int bnx2i_process_scsi_cmd_resp(struct iscsi_session *session, | |
1337 | struct bnx2i_conn *bnx2i_conn, | |
1338 | struct cqe *cqe) | |
1339 | { | |
1340 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1341 | struct bnx2i_cmd_response *resp_cqe; | |
1342 | struct bnx2i_cmd *bnx2i_cmd; | |
1343 | struct iscsi_task *task; | |
1344 | struct iscsi_cmd_rsp *hdr; | |
1345 | u32 datalen = 0; | |
1346 | ||
1347 | resp_cqe = (struct bnx2i_cmd_response *)cqe; | |
1348 | spin_lock(&session->lock); | |
1349 | task = iscsi_itt_to_task(conn, | |
1350 | resp_cqe->itt & ISCSI_CMD_RESPONSE_INDEX); | |
1351 | if (!task) | |
1352 | goto fail; | |
1353 | ||
1354 | bnx2i_cmd = task->dd_data; | |
1355 | ||
1356 | if (bnx2i_cmd->req.op_attr & ISCSI_CMD_REQUEST_READ) { | |
1357 | conn->datain_pdus_cnt += | |
1358 | resp_cqe->task_stat.read_stat.num_data_outs; | |
1359 | conn->rxdata_octets += | |
1360 | bnx2i_cmd->req.total_data_transfer_length; | |
1361 | } else { | |
1362 | conn->dataout_pdus_cnt += | |
1363 | resp_cqe->task_stat.read_stat.num_data_outs; | |
1364 | conn->r2t_pdus_cnt += | |
1365 | resp_cqe->task_stat.read_stat.num_r2ts; | |
1366 | conn->txdata_octets += | |
1367 | bnx2i_cmd->req.total_data_transfer_length; | |
1368 | } | |
1369 | bnx2i_iscsi_unmap_sg_list(bnx2i_cmd); | |
1370 | ||
1371 | hdr = (struct iscsi_cmd_rsp *)task->hdr; | |
1372 | resp_cqe = (struct bnx2i_cmd_response *)cqe; | |
1373 | hdr->opcode = resp_cqe->op_code; | |
1374 | hdr->max_cmdsn = cpu_to_be32(resp_cqe->max_cmd_sn); | |
1375 | hdr->exp_cmdsn = cpu_to_be32(resp_cqe->exp_cmd_sn); | |
1376 | hdr->response = resp_cqe->response; | |
1377 | hdr->cmd_status = resp_cqe->status; | |
1378 | hdr->flags = resp_cqe->response_flags; | |
1379 | hdr->residual_count = cpu_to_be32(resp_cqe->residual_count); | |
1380 | ||
1381 | if (resp_cqe->op_code == ISCSI_OP_SCSI_DATA_IN) | |
1382 | goto done; | |
1383 | ||
1384 | if (resp_cqe->status == SAM_STAT_CHECK_CONDITION) { | |
1385 | datalen = resp_cqe->data_length; | |
1386 | if (datalen < 2) | |
1387 | goto done; | |
1388 | ||
1389 | if (datalen > BNX2I_RQ_WQE_SIZE) { | |
1390 | iscsi_conn_printk(KERN_ERR, conn, | |
1391 | "sense data len %d > RQ sz\n", | |
1392 | datalen); | |
1393 | datalen = BNX2I_RQ_WQE_SIZE; | |
1394 | } else if (datalen > ISCSI_DEF_MAX_RECV_SEG_LEN) { | |
1395 | iscsi_conn_printk(KERN_ERR, conn, | |
1396 | "sense data len %d > conn data\n", | |
1397 | datalen); | |
1398 | datalen = ISCSI_DEF_MAX_RECV_SEG_LEN; | |
1399 | } | |
1400 | ||
1401 | bnx2i_get_rq_buf(bnx2i_cmd->conn, conn->data, datalen); | |
1402 | bnx2i_put_rq_buf(bnx2i_cmd->conn, 1); | |
1403 | } | |
1404 | ||
1405 | done: | |
1406 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, | |
1407 | conn->data, datalen); | |
1408 | fail: | |
1409 | spin_unlock(&session->lock); | |
1410 | return 0; | |
1411 | } | |
1412 | ||
1413 | ||
1414 | /** | |
1415 | * bnx2i_process_login_resp - this function handles iscsi login response | |
1416 | * @session: iscsi session pointer | |
1417 | * @bnx2i_conn: iscsi connection pointer | |
1418 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1419 | * | |
1420 | * process Login Response CQE & complete it to open-iscsi user daemon | |
1421 | */ | |
1422 | static int bnx2i_process_login_resp(struct iscsi_session *session, | |
1423 | struct bnx2i_conn *bnx2i_conn, | |
1424 | struct cqe *cqe) | |
1425 | { | |
1426 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1427 | struct iscsi_task *task; | |
1428 | struct bnx2i_login_response *login; | |
1429 | struct iscsi_login_rsp *resp_hdr; | |
1430 | int pld_len; | |
1431 | int pad_len; | |
1432 | ||
1433 | login = (struct bnx2i_login_response *) cqe; | |
1434 | spin_lock(&session->lock); | |
1435 | task = iscsi_itt_to_task(conn, | |
1436 | login->itt & ISCSI_LOGIN_RESPONSE_INDEX); | |
1437 | if (!task) | |
1438 | goto done; | |
1439 | ||
1440 | resp_hdr = (struct iscsi_login_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; | |
1441 | memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); | |
1442 | resp_hdr->opcode = login->op_code; | |
1443 | resp_hdr->flags = login->response_flags; | |
1444 | resp_hdr->max_version = login->version_max; | |
a419aef8 | 1445 | resp_hdr->active_version = login->version_active; |
cf4e6363 MC |
1446 | resp_hdr->hlength = 0; |
1447 | ||
1448 | hton24(resp_hdr->dlength, login->data_length); | |
1449 | memcpy(resp_hdr->isid, &login->isid_lo, 6); | |
1450 | resp_hdr->tsih = cpu_to_be16(login->tsih); | |
1451 | resp_hdr->itt = task->hdr->itt; | |
1452 | resp_hdr->statsn = cpu_to_be32(login->stat_sn); | |
1453 | resp_hdr->exp_cmdsn = cpu_to_be32(login->exp_cmd_sn); | |
1454 | resp_hdr->max_cmdsn = cpu_to_be32(login->max_cmd_sn); | |
1455 | resp_hdr->status_class = login->status_class; | |
1456 | resp_hdr->status_detail = login->status_detail; | |
1457 | pld_len = login->data_length; | |
1458 | bnx2i_conn->gen_pdu.resp_wr_ptr = | |
1459 | bnx2i_conn->gen_pdu.resp_buf + pld_len; | |
1460 | ||
1461 | pad_len = 0; | |
1462 | if (pld_len & 0x3) | |
1463 | pad_len = 4 - (pld_len % 4); | |
1464 | ||
1465 | if (pad_len) { | |
1466 | int i = 0; | |
1467 | for (i = 0; i < pad_len; i++) { | |
1468 | bnx2i_conn->gen_pdu.resp_wr_ptr[0] = 0; | |
1469 | bnx2i_conn->gen_pdu.resp_wr_ptr++; | |
1470 | } | |
1471 | } | |
1472 | ||
1473 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, | |
1474 | bnx2i_conn->gen_pdu.resp_buf, | |
1475 | bnx2i_conn->gen_pdu.resp_wr_ptr - bnx2i_conn->gen_pdu.resp_buf); | |
1476 | done: | |
1477 | spin_unlock(&session->lock); | |
1478 | return 0; | |
1479 | } | |
1480 | ||
09813ba5 EW |
1481 | |
1482 | /** | |
1483 | * bnx2i_process_text_resp - this function handles iscsi text response | |
1484 | * @session: iscsi session pointer | |
1485 | * @bnx2i_conn: iscsi connection pointer | |
1486 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1487 | * | |
1488 | * process iSCSI Text Response CQE& complete it to open-iscsi user daemon | |
1489 | */ | |
1490 | static int bnx2i_process_text_resp(struct iscsi_session *session, | |
1491 | struct bnx2i_conn *bnx2i_conn, | |
1492 | struct cqe *cqe) | |
1493 | { | |
1494 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1495 | struct iscsi_task *task; | |
1496 | struct bnx2i_text_response *text; | |
1497 | struct iscsi_text_rsp *resp_hdr; | |
1498 | int pld_len; | |
1499 | int pad_len; | |
1500 | ||
1501 | text = (struct bnx2i_text_response *) cqe; | |
1502 | spin_lock(&session->lock); | |
1503 | task = iscsi_itt_to_task(conn, text->itt & ISCSI_LOGIN_RESPONSE_INDEX); | |
1504 | if (!task) | |
1505 | goto done; | |
1506 | ||
1507 | resp_hdr = (struct iscsi_text_rsp *)&bnx2i_conn->gen_pdu.resp_hdr; | |
1508 | memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); | |
1509 | resp_hdr->opcode = text->op_code; | |
1510 | resp_hdr->flags = text->response_flags; | |
1511 | resp_hdr->hlength = 0; | |
1512 | ||
1513 | hton24(resp_hdr->dlength, text->data_length); | |
1514 | resp_hdr->itt = task->hdr->itt; | |
1515 | resp_hdr->ttt = cpu_to_be32(text->ttt); | |
1516 | resp_hdr->statsn = task->hdr->exp_statsn; | |
1517 | resp_hdr->exp_cmdsn = cpu_to_be32(text->exp_cmd_sn); | |
1518 | resp_hdr->max_cmdsn = cpu_to_be32(text->max_cmd_sn); | |
1519 | pld_len = text->data_length; | |
1520 | bnx2i_conn->gen_pdu.resp_wr_ptr = bnx2i_conn->gen_pdu.resp_buf + | |
1521 | pld_len; | |
1522 | pad_len = 0; | |
1523 | if (pld_len & 0x3) | |
1524 | pad_len = 4 - (pld_len % 4); | |
1525 | ||
1526 | if (pad_len) { | |
1527 | int i = 0; | |
1528 | for (i = 0; i < pad_len; i++) { | |
1529 | bnx2i_conn->gen_pdu.resp_wr_ptr[0] = 0; | |
1530 | bnx2i_conn->gen_pdu.resp_wr_ptr++; | |
1531 | } | |
1532 | } | |
1533 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, | |
1534 | bnx2i_conn->gen_pdu.resp_buf, | |
1535 | bnx2i_conn->gen_pdu.resp_wr_ptr - | |
1536 | bnx2i_conn->gen_pdu.resp_buf); | |
1537 | done: | |
1538 | spin_unlock(&session->lock); | |
1539 | return 0; | |
1540 | } | |
1541 | ||
1542 | ||
cf4e6363 MC |
1543 | /** |
1544 | * bnx2i_process_tmf_resp - this function handles iscsi TMF response | |
1545 | * @session: iscsi session pointer | |
1546 | * @bnx2i_conn: iscsi connection pointer | |
1547 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1548 | * | |
1549 | * process iSCSI TMF Response CQE and wake up the driver eh thread. | |
1550 | */ | |
1551 | static int bnx2i_process_tmf_resp(struct iscsi_session *session, | |
1552 | struct bnx2i_conn *bnx2i_conn, | |
1553 | struct cqe *cqe) | |
1554 | { | |
1555 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1556 | struct iscsi_task *task; | |
1557 | struct bnx2i_tmf_response *tmf_cqe; | |
1558 | struct iscsi_tm_rsp *resp_hdr; | |
1559 | ||
1560 | tmf_cqe = (struct bnx2i_tmf_response *)cqe; | |
1561 | spin_lock(&session->lock); | |
1562 | task = iscsi_itt_to_task(conn, | |
1563 | tmf_cqe->itt & ISCSI_TMF_RESPONSE_INDEX); | |
1564 | if (!task) | |
1565 | goto done; | |
1566 | ||
1567 | resp_hdr = (struct iscsi_tm_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; | |
1568 | memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); | |
1569 | resp_hdr->opcode = tmf_cqe->op_code; | |
1570 | resp_hdr->max_cmdsn = cpu_to_be32(tmf_cqe->max_cmd_sn); | |
1571 | resp_hdr->exp_cmdsn = cpu_to_be32(tmf_cqe->exp_cmd_sn); | |
1572 | resp_hdr->itt = task->hdr->itt; | |
1573 | resp_hdr->response = tmf_cqe->response; | |
1574 | ||
1575 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0); | |
1576 | done: | |
1577 | spin_unlock(&session->lock); | |
1578 | return 0; | |
1579 | } | |
1580 | ||
1581 | /** | |
1582 | * bnx2i_process_logout_resp - this function handles iscsi logout response | |
1583 | * @session: iscsi session pointer | |
1584 | * @bnx2i_conn: iscsi connection pointer | |
1585 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1586 | * | |
1587 | * process iSCSI Logout Response CQE & make function call to | |
1588 | * notify the user daemon. | |
1589 | */ | |
1590 | static int bnx2i_process_logout_resp(struct iscsi_session *session, | |
1591 | struct bnx2i_conn *bnx2i_conn, | |
1592 | struct cqe *cqe) | |
1593 | { | |
1594 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1595 | struct iscsi_task *task; | |
1596 | struct bnx2i_logout_response *logout; | |
1597 | struct iscsi_logout_rsp *resp_hdr; | |
1598 | ||
1599 | logout = (struct bnx2i_logout_response *) cqe; | |
1600 | spin_lock(&session->lock); | |
1601 | task = iscsi_itt_to_task(conn, | |
1602 | logout->itt & ISCSI_LOGOUT_RESPONSE_INDEX); | |
1603 | if (!task) | |
1604 | goto done; | |
1605 | ||
1606 | resp_hdr = (struct iscsi_logout_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; | |
1607 | memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); | |
1608 | resp_hdr->opcode = logout->op_code; | |
1609 | resp_hdr->flags = logout->response; | |
1610 | resp_hdr->hlength = 0; | |
1611 | ||
1612 | resp_hdr->itt = task->hdr->itt; | |
1613 | resp_hdr->statsn = task->hdr->exp_statsn; | |
1614 | resp_hdr->exp_cmdsn = cpu_to_be32(logout->exp_cmd_sn); | |
1615 | resp_hdr->max_cmdsn = cpu_to_be32(logout->max_cmd_sn); | |
1616 | ||
1617 | resp_hdr->t2wait = cpu_to_be32(logout->time_to_wait); | |
1618 | resp_hdr->t2retain = cpu_to_be32(logout->time_to_retain); | |
1619 | ||
1620 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0); | |
2eefb20d EW |
1621 | |
1622 | bnx2i_conn->ep->state = EP_STATE_LOGOUT_RESP_RCVD; | |
cf4e6363 MC |
1623 | done: |
1624 | spin_unlock(&session->lock); | |
1625 | return 0; | |
1626 | } | |
1627 | ||
1628 | /** | |
1629 | * bnx2i_process_nopin_local_cmpl - this function handles iscsi nopin CQE | |
1630 | * @session: iscsi session pointer | |
1631 | * @bnx2i_conn: iscsi connection pointer | |
1632 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1633 | * | |
1634 | * process iSCSI NOPIN local completion CQE, frees IIT and command structures | |
1635 | */ | |
1636 | static void bnx2i_process_nopin_local_cmpl(struct iscsi_session *session, | |
1637 | struct bnx2i_conn *bnx2i_conn, | |
1638 | struct cqe *cqe) | |
1639 | { | |
1640 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1641 | struct bnx2i_nop_in_msg *nop_in; | |
1642 | struct iscsi_task *task; | |
1643 | ||
1644 | nop_in = (struct bnx2i_nop_in_msg *)cqe; | |
1645 | spin_lock(&session->lock); | |
1646 | task = iscsi_itt_to_task(conn, | |
1647 | nop_in->itt & ISCSI_NOP_IN_MSG_INDEX); | |
1648 | if (task) | |
8eea2f55 | 1649 | __iscsi_put_task(task); |
cf4e6363 MC |
1650 | spin_unlock(&session->lock); |
1651 | } | |
1652 | ||
1653 | /** | |
1654 | * bnx2i_unsol_pdu_adjust_rq - makes adjustments to RQ after unsol pdu is recvd | |
1655 | * @conn: iscsi connection | |
1656 | * | |
1657 | * Firmware advances RQ producer index for every unsolicited PDU even if | |
1658 | * payload data length is '0'. This function makes corresponding | |
1659 | * adjustments on the driver side to match this f/w behavior | |
1660 | */ | |
1661 | static void bnx2i_unsol_pdu_adjust_rq(struct bnx2i_conn *bnx2i_conn) | |
1662 | { | |
1663 | char dummy_rq_data[2]; | |
1664 | bnx2i_get_rq_buf(bnx2i_conn, dummy_rq_data, 1); | |
1665 | bnx2i_put_rq_buf(bnx2i_conn, 1); | |
1666 | } | |
1667 | ||
1668 | ||
1669 | /** | |
1670 | * bnx2i_process_nopin_mesg - this function handles iscsi nopin CQE | |
1671 | * @session: iscsi session pointer | |
1672 | * @bnx2i_conn: iscsi connection pointer | |
1673 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1674 | * | |
1675 | * process iSCSI target's proactive iSCSI NOPIN request | |
1676 | */ | |
1677 | static int bnx2i_process_nopin_mesg(struct iscsi_session *session, | |
1678 | struct bnx2i_conn *bnx2i_conn, | |
1679 | struct cqe *cqe) | |
1680 | { | |
1681 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1682 | struct iscsi_task *task; | |
1683 | struct bnx2i_nop_in_msg *nop_in; | |
1684 | struct iscsi_nopin *hdr; | |
cf4e6363 MC |
1685 | int tgt_async_nop = 0; |
1686 | ||
1687 | nop_in = (struct bnx2i_nop_in_msg *)cqe; | |
cf4e6363 MC |
1688 | |
1689 | spin_lock(&session->lock); | |
1690 | hdr = (struct iscsi_nopin *)&bnx2i_conn->gen_pdu.resp_hdr; | |
1691 | memset(hdr, 0, sizeof(struct iscsi_hdr)); | |
1692 | hdr->opcode = nop_in->op_code; | |
1693 | hdr->max_cmdsn = cpu_to_be32(nop_in->max_cmd_sn); | |
1694 | hdr->exp_cmdsn = cpu_to_be32(nop_in->exp_cmd_sn); | |
1695 | hdr->ttt = cpu_to_be32(nop_in->ttt); | |
1696 | ||
5ee32576 | 1697 | if (nop_in->itt == (u16) RESERVED_ITT) { |
cf4e6363 MC |
1698 | bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); |
1699 | hdr->itt = RESERVED_ITT; | |
1700 | tgt_async_nop = 1; | |
1701 | goto done; | |
1702 | } | |
1703 | ||
1704 | /* this is a response to one of our nop-outs */ | |
5ee32576 EW |
1705 | task = iscsi_itt_to_task(conn, |
1706 | (itt_t) (nop_in->itt & ISCSI_NOP_IN_MSG_INDEX)); | |
cf4e6363 MC |
1707 | if (task) { |
1708 | hdr->flags = ISCSI_FLAG_CMD_FINAL; | |
1709 | hdr->itt = task->hdr->itt; | |
1710 | hdr->ttt = cpu_to_be32(nop_in->ttt); | |
1711 | memcpy(hdr->lun, nop_in->lun, 8); | |
1712 | } | |
1713 | done: | |
1714 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0); | |
1715 | spin_unlock(&session->lock); | |
1716 | ||
1717 | return tgt_async_nop; | |
1718 | } | |
1719 | ||
1720 | ||
1721 | /** | |
1722 | * bnx2i_process_async_mesg - this function handles iscsi async message | |
1723 | * @session: iscsi session pointer | |
1724 | * @bnx2i_conn: iscsi connection pointer | |
1725 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1726 | * | |
1727 | * process iSCSI ASYNC Message | |
1728 | */ | |
1729 | static void bnx2i_process_async_mesg(struct iscsi_session *session, | |
1730 | struct bnx2i_conn *bnx2i_conn, | |
1731 | struct cqe *cqe) | |
1732 | { | |
1733 | struct bnx2i_async_msg *async_cqe; | |
1734 | struct iscsi_async *resp_hdr; | |
1735 | u8 async_event; | |
1736 | ||
1737 | bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); | |
1738 | ||
1739 | async_cqe = (struct bnx2i_async_msg *)cqe; | |
1740 | async_event = async_cqe->async_event; | |
1741 | ||
1742 | if (async_event == ISCSI_ASYNC_MSG_SCSI_EVENT) { | |
1743 | iscsi_conn_printk(KERN_ALERT, bnx2i_conn->cls_conn->dd_data, | |
1744 | "async: scsi events not supported\n"); | |
1745 | return; | |
1746 | } | |
1747 | ||
1748 | spin_lock(&session->lock); | |
1749 | resp_hdr = (struct iscsi_async *) &bnx2i_conn->gen_pdu.resp_hdr; | |
1750 | memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); | |
1751 | resp_hdr->opcode = async_cqe->op_code; | |
1752 | resp_hdr->flags = 0x80; | |
1753 | ||
1754 | memcpy(resp_hdr->lun, async_cqe->lun, 8); | |
1755 | resp_hdr->exp_cmdsn = cpu_to_be32(async_cqe->exp_cmd_sn); | |
1756 | resp_hdr->max_cmdsn = cpu_to_be32(async_cqe->max_cmd_sn); | |
1757 | ||
1758 | resp_hdr->async_event = async_cqe->async_event; | |
1759 | resp_hdr->async_vcode = async_cqe->async_vcode; | |
1760 | ||
1761 | resp_hdr->param1 = cpu_to_be16(async_cqe->param1); | |
1762 | resp_hdr->param2 = cpu_to_be16(async_cqe->param2); | |
1763 | resp_hdr->param3 = cpu_to_be16(async_cqe->param3); | |
1764 | ||
1765 | __iscsi_complete_pdu(bnx2i_conn->cls_conn->dd_data, | |
1766 | (struct iscsi_hdr *)resp_hdr, NULL, 0); | |
1767 | spin_unlock(&session->lock); | |
1768 | } | |
1769 | ||
1770 | ||
1771 | /** | |
1772 | * bnx2i_process_reject_mesg - process iscsi reject pdu | |
1773 | * @session: iscsi session pointer | |
1774 | * @bnx2i_conn: iscsi connection pointer | |
1775 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1776 | * | |
1777 | * process iSCSI REJECT message | |
1778 | */ | |
1779 | static void bnx2i_process_reject_mesg(struct iscsi_session *session, | |
1780 | struct bnx2i_conn *bnx2i_conn, | |
1781 | struct cqe *cqe) | |
1782 | { | |
1783 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1784 | struct bnx2i_reject_msg *reject; | |
1785 | struct iscsi_reject *hdr; | |
1786 | ||
1787 | reject = (struct bnx2i_reject_msg *) cqe; | |
1788 | if (reject->data_length) { | |
1789 | bnx2i_get_rq_buf(bnx2i_conn, conn->data, reject->data_length); | |
1790 | bnx2i_put_rq_buf(bnx2i_conn, 1); | |
1791 | } else | |
1792 | bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); | |
1793 | ||
1794 | spin_lock(&session->lock); | |
1795 | hdr = (struct iscsi_reject *) &bnx2i_conn->gen_pdu.resp_hdr; | |
1796 | memset(hdr, 0, sizeof(struct iscsi_hdr)); | |
1797 | hdr->opcode = reject->op_code; | |
1798 | hdr->reason = reject->reason; | |
1799 | hton24(hdr->dlength, reject->data_length); | |
1800 | hdr->max_cmdsn = cpu_to_be32(reject->max_cmd_sn); | |
1801 | hdr->exp_cmdsn = cpu_to_be32(reject->exp_cmd_sn); | |
1802 | hdr->ffffffff = cpu_to_be32(RESERVED_ITT); | |
1803 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, conn->data, | |
1804 | reject->data_length); | |
1805 | spin_unlock(&session->lock); | |
1806 | } | |
1807 | ||
1808 | /** | |
1809 | * bnx2i_process_cmd_cleanup_resp - process scsi command clean-up completion | |
1810 | * @session: iscsi session pointer | |
1811 | * @bnx2i_conn: iscsi connection pointer | |
1812 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1813 | * | |
1814 | * process command cleanup response CQE during conn shutdown or error recovery | |
1815 | */ | |
1816 | static void bnx2i_process_cmd_cleanup_resp(struct iscsi_session *session, | |
1817 | struct bnx2i_conn *bnx2i_conn, | |
1818 | struct cqe *cqe) | |
1819 | { | |
1820 | struct bnx2i_cleanup_response *cmd_clean_rsp; | |
1821 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1822 | struct iscsi_task *task; | |
1823 | ||
1824 | cmd_clean_rsp = (struct bnx2i_cleanup_response *)cqe; | |
1825 | spin_lock(&session->lock); | |
1826 | task = iscsi_itt_to_task(conn, | |
1827 | cmd_clean_rsp->itt & ISCSI_CLEANUP_RESPONSE_INDEX); | |
1828 | if (!task) | |
1829 | printk(KERN_ALERT "bnx2i: cmd clean ITT %x not active\n", | |
1830 | cmd_clean_rsp->itt & ISCSI_CLEANUP_RESPONSE_INDEX); | |
1831 | spin_unlock(&session->lock); | |
1832 | complete(&bnx2i_conn->cmd_cleanup_cmpl); | |
1833 | } | |
1834 | ||
1835 | ||
1836 | ||
1837 | /** | |
1838 | * bnx2i_process_new_cqes - process newly DMA'ed CQE's | |
1839 | * @bnx2i_conn: iscsi connection | |
1840 | * | |
1841 | * this function is called by generic KCQ handler to process all pending CQE's | |
1842 | */ | |
1843 | static void bnx2i_process_new_cqes(struct bnx2i_conn *bnx2i_conn) | |
1844 | { | |
1845 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1846 | struct iscsi_session *session = conn->session; | |
1847 | struct qp_info *qp = &bnx2i_conn->ep->qp; | |
1848 | struct bnx2i_nop_in_msg *nopin; | |
1849 | int tgt_async_msg; | |
1850 | ||
1851 | while (1) { | |
1852 | nopin = (struct bnx2i_nop_in_msg *) qp->cq_cons_qe; | |
1853 | if (nopin->cq_req_sn != qp->cqe_exp_seq_sn) | |
1854 | break; | |
1855 | ||
5ee32576 EW |
1856 | if (unlikely(test_bit(ISCSI_SUSPEND_BIT, &conn->suspend_rx))) { |
1857 | if (nopin->op_code == ISCSI_OP_NOOP_IN && | |
1858 | nopin->itt == (u16) RESERVED_ITT) { | |
1859 | printk(KERN_ALERT "bnx2i: Unsolicited " | |
1860 | "NOP-In detected for suspended " | |
1861 | "connection dev=%s!\n", | |
1862 | bnx2i_conn->hba->netdev->name); | |
1863 | bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); | |
1864 | goto cqe_out; | |
1865 | } | |
cf4e6363 | 1866 | break; |
5ee32576 | 1867 | } |
cf4e6363 MC |
1868 | tgt_async_msg = 0; |
1869 | ||
1870 | switch (nopin->op_code) { | |
1871 | case ISCSI_OP_SCSI_CMD_RSP: | |
1872 | case ISCSI_OP_SCSI_DATA_IN: | |
1873 | bnx2i_process_scsi_cmd_resp(session, bnx2i_conn, | |
1874 | qp->cq_cons_qe); | |
1875 | break; | |
1876 | case ISCSI_OP_LOGIN_RSP: | |
1877 | bnx2i_process_login_resp(session, bnx2i_conn, | |
1878 | qp->cq_cons_qe); | |
1879 | break; | |
1880 | case ISCSI_OP_SCSI_TMFUNC_RSP: | |
1881 | bnx2i_process_tmf_resp(session, bnx2i_conn, | |
1882 | qp->cq_cons_qe); | |
09813ba5 EW |
1883 | break; |
1884 | case ISCSI_OP_TEXT_RSP: | |
1885 | bnx2i_process_text_resp(session, bnx2i_conn, | |
1886 | qp->cq_cons_qe); | |
cf4e6363 MC |
1887 | break; |
1888 | case ISCSI_OP_LOGOUT_RSP: | |
1889 | bnx2i_process_logout_resp(session, bnx2i_conn, | |
1890 | qp->cq_cons_qe); | |
1891 | break; | |
1892 | case ISCSI_OP_NOOP_IN: | |
1893 | if (bnx2i_process_nopin_mesg(session, bnx2i_conn, | |
1894 | qp->cq_cons_qe)) | |
1895 | tgt_async_msg = 1; | |
1896 | break; | |
1897 | case ISCSI_OPCODE_NOPOUT_LOCAL_COMPLETION: | |
1898 | bnx2i_process_nopin_local_cmpl(session, bnx2i_conn, | |
1899 | qp->cq_cons_qe); | |
1900 | break; | |
1901 | case ISCSI_OP_ASYNC_EVENT: | |
1902 | bnx2i_process_async_mesg(session, bnx2i_conn, | |
1903 | qp->cq_cons_qe); | |
1904 | tgt_async_msg = 1; | |
1905 | break; | |
1906 | case ISCSI_OP_REJECT: | |
1907 | bnx2i_process_reject_mesg(session, bnx2i_conn, | |
1908 | qp->cq_cons_qe); | |
1909 | break; | |
1910 | case ISCSI_OPCODE_CLEANUP_RESPONSE: | |
1911 | bnx2i_process_cmd_cleanup_resp(session, bnx2i_conn, | |
1912 | qp->cq_cons_qe); | |
1913 | break; | |
1914 | default: | |
1915 | printk(KERN_ALERT "bnx2i: unknown opcode 0x%x\n", | |
1916 | nopin->op_code); | |
1917 | } | |
cf4e6363 MC |
1918 | if (!tgt_async_msg) |
1919 | bnx2i_conn->ep->num_active_cmds--; | |
5ee32576 | 1920 | cqe_out: |
cf4e6363 MC |
1921 | /* clear out in production version only, till beta keep opcode |
1922 | * field intact, will be helpful in debugging (context dump) | |
1923 | * nopin->op_code = 0; | |
1924 | */ | |
1925 | qp->cqe_exp_seq_sn++; | |
1926 | if (qp->cqe_exp_seq_sn == (qp->cqe_size * 2 + 1)) | |
1927 | qp->cqe_exp_seq_sn = ISCSI_INITIAL_SN; | |
1928 | ||
1929 | if (qp->cq_cons_qe == qp->cq_last_qe) { | |
1930 | qp->cq_cons_qe = qp->cq_first_qe; | |
1931 | qp->cq_cons_idx = 0; | |
1932 | } else { | |
1933 | qp->cq_cons_qe++; | |
1934 | qp->cq_cons_idx++; | |
1935 | } | |
1936 | } | |
1937 | bnx2i_arm_cq_event_coalescing(bnx2i_conn->ep, CNIC_ARM_CQE); | |
1938 | } | |
1939 | ||
1940 | /** | |
1941 | * bnx2i_fastpath_notification - process global event queue (KCQ) | |
1942 | * @hba: adapter structure pointer | |
1943 | * @new_cqe_kcqe: pointer to newly DMA'ed KCQE entry | |
1944 | * | |
1945 | * Fast path event notification handler, KCQ entry carries context id | |
1946 | * of the connection that has 1 or more pending CQ entries | |
1947 | */ | |
1948 | static void bnx2i_fastpath_notification(struct bnx2i_hba *hba, | |
1949 | struct iscsi_kcqe *new_cqe_kcqe) | |
1950 | { | |
1951 | struct bnx2i_conn *conn; | |
1952 | u32 iscsi_cid; | |
1953 | ||
1954 | iscsi_cid = new_cqe_kcqe->iscsi_conn_id; | |
1955 | conn = bnx2i_get_conn_from_id(hba, iscsi_cid); | |
1956 | ||
1957 | if (!conn) { | |
1958 | printk(KERN_ALERT "cid #%x not valid\n", iscsi_cid); | |
1959 | return; | |
1960 | } | |
1961 | if (!conn->ep) { | |
1962 | printk(KERN_ALERT "cid #%x - ep not bound\n", iscsi_cid); | |
1963 | return; | |
1964 | } | |
1965 | ||
1966 | bnx2i_process_new_cqes(conn); | |
1967 | } | |
1968 | ||
1969 | ||
1970 | /** | |
1971 | * bnx2i_process_update_conn_cmpl - process iscsi conn update completion KCQE | |
1972 | * @hba: adapter structure pointer | |
1973 | * @update_kcqe: kcqe pointer | |
1974 | * | |
1975 | * CONN_UPDATE completion handler, this completes iSCSI connection FFP migration | |
1976 | */ | |
1977 | static void bnx2i_process_update_conn_cmpl(struct bnx2i_hba *hba, | |
1978 | struct iscsi_kcqe *update_kcqe) | |
1979 | { | |
1980 | struct bnx2i_conn *conn; | |
1981 | u32 iscsi_cid; | |
1982 | ||
1983 | iscsi_cid = update_kcqe->iscsi_conn_id; | |
1984 | conn = bnx2i_get_conn_from_id(hba, iscsi_cid); | |
1985 | ||
1986 | if (!conn) { | |
1987 | printk(KERN_ALERT "conn_update: cid %x not valid\n", iscsi_cid); | |
1988 | return; | |
1989 | } | |
1990 | if (!conn->ep) { | |
1991 | printk(KERN_ALERT "cid %x does not have ep bound\n", iscsi_cid); | |
1992 | return; | |
1993 | } | |
1994 | ||
1995 | if (update_kcqe->completion_status) { | |
1996 | printk(KERN_ALERT "request failed cid %x\n", iscsi_cid); | |
1997 | conn->ep->state = EP_STATE_ULP_UPDATE_FAILED; | |
1998 | } else | |
1999 | conn->ep->state = EP_STATE_ULP_UPDATE_COMPL; | |
2000 | ||
2001 | wake_up_interruptible(&conn->ep->ofld_wait); | |
2002 | } | |
2003 | ||
2004 | ||
2005 | /** | |
2006 | * bnx2i_recovery_que_add_conn - add connection to recovery queue | |
2007 | * @hba: adapter structure pointer | |
2008 | * @bnx2i_conn: iscsi connection | |
2009 | * | |
2010 | * Add connection to recovery queue and schedule adapter eh worker | |
2011 | */ | |
2012 | static void bnx2i_recovery_que_add_conn(struct bnx2i_hba *hba, | |
2013 | struct bnx2i_conn *bnx2i_conn) | |
2014 | { | |
2015 | iscsi_conn_failure(bnx2i_conn->cls_conn->dd_data, | |
2016 | ISCSI_ERR_CONN_FAILED); | |
2017 | } | |
2018 | ||
2019 | ||
2020 | /** | |
2021 | * bnx2i_process_tcp_error - process error notification on a given connection | |
2022 | * | |
2023 | * @hba: adapter structure pointer | |
2024 | * @tcp_err: tcp error kcqe pointer | |
2025 | * | |
2026 | * handles tcp level error notifications from FW. | |
2027 | */ | |
2028 | static void bnx2i_process_tcp_error(struct bnx2i_hba *hba, | |
2029 | struct iscsi_kcqe *tcp_err) | |
2030 | { | |
2031 | struct bnx2i_conn *bnx2i_conn; | |
2032 | u32 iscsi_cid; | |
2033 | ||
2034 | iscsi_cid = tcp_err->iscsi_conn_id; | |
2035 | bnx2i_conn = bnx2i_get_conn_from_id(hba, iscsi_cid); | |
2036 | ||
2037 | if (!bnx2i_conn) { | |
2038 | printk(KERN_ALERT "bnx2i - cid 0x%x not valid\n", iscsi_cid); | |
2039 | return; | |
2040 | } | |
2041 | ||
2042 | printk(KERN_ALERT "bnx2i - cid 0x%x had TCP errors, error code 0x%x\n", | |
2043 | iscsi_cid, tcp_err->completion_status); | |
2044 | bnx2i_recovery_que_add_conn(bnx2i_conn->hba, bnx2i_conn); | |
2045 | } | |
2046 | ||
2047 | ||
2048 | /** | |
2049 | * bnx2i_process_iscsi_error - process error notification on a given connection | |
2050 | * @hba: adapter structure pointer | |
2051 | * @iscsi_err: iscsi error kcqe pointer | |
2052 | * | |
2053 | * handles iscsi error notifications from the FW. Firmware based in initial | |
2054 | * handshake classifies iscsi protocol / TCP rfc violation into either | |
2055 | * warning or error indications. If indication is of "Error" type, driver | |
2056 | * will initiate session recovery for that connection/session. For | |
2057 | * "Warning" type indication, driver will put out a system log message | |
2058 | * (there will be only one message for each type for the life of the | |
2059 | * session, this is to avoid un-necessarily overloading the system) | |
2060 | */ | |
2061 | static void bnx2i_process_iscsi_error(struct bnx2i_hba *hba, | |
2062 | struct iscsi_kcqe *iscsi_err) | |
2063 | { | |
2064 | struct bnx2i_conn *bnx2i_conn; | |
2065 | u32 iscsi_cid; | |
2066 | char warn_notice[] = "iscsi_warning"; | |
2067 | char error_notice[] = "iscsi_error"; | |
2068 | char additional_notice[64]; | |
2069 | char *message; | |
2070 | int need_recovery; | |
2071 | u64 err_mask64; | |
2072 | ||
2073 | iscsi_cid = iscsi_err->iscsi_conn_id; | |
2074 | bnx2i_conn = bnx2i_get_conn_from_id(hba, iscsi_cid); | |
2075 | if (!bnx2i_conn) { | |
2076 | printk(KERN_ALERT "bnx2i - cid 0x%x not valid\n", iscsi_cid); | |
2077 | return; | |
2078 | } | |
2079 | ||
2080 | err_mask64 = (0x1ULL << iscsi_err->completion_status); | |
2081 | ||
2082 | if (err_mask64 & iscsi_error_mask) { | |
2083 | need_recovery = 0; | |
2084 | message = warn_notice; | |
2085 | } else { | |
2086 | need_recovery = 1; | |
2087 | message = error_notice; | |
2088 | } | |
2089 | ||
2090 | switch (iscsi_err->completion_status) { | |
2091 | case ISCSI_KCQE_COMPLETION_STATUS_HDR_DIG_ERR: | |
2092 | strcpy(additional_notice, "hdr digest err"); | |
2093 | break; | |
2094 | case ISCSI_KCQE_COMPLETION_STATUS_DATA_DIG_ERR: | |
2095 | strcpy(additional_notice, "data digest err"); | |
2096 | break; | |
2097 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_OPCODE: | |
2098 | strcpy(additional_notice, "wrong opcode rcvd"); | |
2099 | break; | |
2100 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_AHS_LEN: | |
2101 | strcpy(additional_notice, "AHS len > 0 rcvd"); | |
2102 | break; | |
2103 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_ITT: | |
2104 | strcpy(additional_notice, "invalid ITT rcvd"); | |
2105 | break; | |
2106 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_STATSN: | |
2107 | strcpy(additional_notice, "wrong StatSN rcvd"); | |
2108 | break; | |
2109 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_EXP_DATASN: | |
2110 | strcpy(additional_notice, "wrong DataSN rcvd"); | |
2111 | break; | |
2112 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T: | |
2113 | strcpy(additional_notice, "pend R2T violation"); | |
2114 | break; | |
2115 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_0: | |
2116 | strcpy(additional_notice, "ERL0, UO"); | |
2117 | break; | |
2118 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_1: | |
2119 | strcpy(additional_notice, "ERL0, U1"); | |
2120 | break; | |
2121 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_2: | |
2122 | strcpy(additional_notice, "ERL0, U2"); | |
2123 | break; | |
2124 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_3: | |
2125 | strcpy(additional_notice, "ERL0, U3"); | |
2126 | break; | |
2127 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_4: | |
2128 | strcpy(additional_notice, "ERL0, U4"); | |
2129 | break; | |
2130 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_5: | |
2131 | strcpy(additional_notice, "ERL0, U5"); | |
2132 | break; | |
2133 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_6: | |
2134 | strcpy(additional_notice, "ERL0, U6"); | |
2135 | break; | |
2136 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REMAIN_RCV_LEN: | |
2137 | strcpy(additional_notice, "invalid resi len"); | |
2138 | break; | |
2139 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_MAX_RCV_PDU_LEN: | |
2140 | strcpy(additional_notice, "MRDSL violation"); | |
2141 | break; | |
2142 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_F_BIT_ZERO: | |
2143 | strcpy(additional_notice, "F-bit not set"); | |
2144 | break; | |
2145 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_NOT_RSRV: | |
2146 | strcpy(additional_notice, "invalid TTT"); | |
2147 | break; | |
2148 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DATASN: | |
2149 | strcpy(additional_notice, "invalid DataSN"); | |
2150 | break; | |
2151 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REMAIN_BURST_LEN: | |
2152 | strcpy(additional_notice, "burst len violation"); | |
2153 | break; | |
2154 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_BUFFER_OFF: | |
2155 | strcpy(additional_notice, "buf offset violation"); | |
2156 | break; | |
2157 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_LUN: | |
2158 | strcpy(additional_notice, "invalid LUN field"); | |
2159 | break; | |
2160 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_R2TSN: | |
2161 | strcpy(additional_notice, "invalid R2TSN field"); | |
2162 | break; | |
2163 | #define BNX2I_ERR_DESIRED_DATA_TRNS_LEN_0 \ | |
2164 | ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_0 | |
2165 | case BNX2I_ERR_DESIRED_DATA_TRNS_LEN_0: | |
2166 | strcpy(additional_notice, "invalid cmd len1"); | |
2167 | break; | |
2168 | #define BNX2I_ERR_DESIRED_DATA_TRNS_LEN_1 \ | |
2169 | ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_1 | |
2170 | case BNX2I_ERR_DESIRED_DATA_TRNS_LEN_1: | |
2171 | strcpy(additional_notice, "invalid cmd len2"); | |
2172 | break; | |
2173 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T_EXCEED: | |
2174 | strcpy(additional_notice, | |
2175 | "pend r2t exceeds MaxOutstandingR2T value"); | |
2176 | break; | |
2177 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_IS_RSRV: | |
2178 | strcpy(additional_notice, "TTT is rsvd"); | |
2179 | break; | |
2180 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_MAX_BURST_LEN: | |
2181 | strcpy(additional_notice, "MBL violation"); | |
2182 | break; | |
2183 | #define BNX2I_ERR_DATA_SEG_LEN_NOT_ZERO \ | |
2184 | ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DATA_SEG_LEN_NOT_ZERO | |
2185 | case BNX2I_ERR_DATA_SEG_LEN_NOT_ZERO: | |
2186 | strcpy(additional_notice, "data seg len != 0"); | |
2187 | break; | |
2188 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REJECT_PDU_LEN: | |
2189 | strcpy(additional_notice, "reject pdu len error"); | |
2190 | break; | |
2191 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_ASYNC_PDU_LEN: | |
2192 | strcpy(additional_notice, "async pdu len error"); | |
2193 | break; | |
2194 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_NOPIN_PDU_LEN: | |
2195 | strcpy(additional_notice, "nopin pdu len error"); | |
2196 | break; | |
2197 | #define BNX2_ERR_PEND_R2T_IN_CLEANUP \ | |
2198 | ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T_IN_CLEANUP | |
2199 | case BNX2_ERR_PEND_R2T_IN_CLEANUP: | |
2200 | strcpy(additional_notice, "pend r2t in cleanup"); | |
2201 | break; | |
2202 | ||
2203 | case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_IP_FRAGMENT: | |
2204 | strcpy(additional_notice, "IP fragments rcvd"); | |
2205 | break; | |
2206 | case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_IP_OPTIONS: | |
2207 | strcpy(additional_notice, "IP options error"); | |
2208 | break; | |
2209 | case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_URGENT_FLAG: | |
2210 | strcpy(additional_notice, "urgent flag error"); | |
2211 | break; | |
2212 | default: | |
2213 | printk(KERN_ALERT "iscsi_err - unknown err %x\n", | |
2214 | iscsi_err->completion_status); | |
2215 | } | |
2216 | ||
2217 | if (need_recovery) { | |
2218 | iscsi_conn_printk(KERN_ALERT, | |
2219 | bnx2i_conn->cls_conn->dd_data, | |
2220 | "bnx2i: %s - %s\n", | |
2221 | message, additional_notice); | |
2222 | ||
2223 | iscsi_conn_printk(KERN_ALERT, | |
2224 | bnx2i_conn->cls_conn->dd_data, | |
2225 | "conn_err - hostno %d conn %p, " | |
2226 | "iscsi_cid %x cid %x\n", | |
2227 | bnx2i_conn->hba->shost->host_no, | |
2228 | bnx2i_conn, bnx2i_conn->ep->ep_iscsi_cid, | |
2229 | bnx2i_conn->ep->ep_cid); | |
2230 | bnx2i_recovery_que_add_conn(bnx2i_conn->hba, bnx2i_conn); | |
2231 | } else | |
2232 | if (!test_and_set_bit(iscsi_err->completion_status, | |
2233 | (void *) &bnx2i_conn->violation_notified)) | |
2234 | iscsi_conn_printk(KERN_ALERT, | |
2235 | bnx2i_conn->cls_conn->dd_data, | |
2236 | "bnx2i: %s - %s\n", | |
2237 | message, additional_notice); | |
2238 | } | |
2239 | ||
2240 | ||
2241 | /** | |
2242 | * bnx2i_process_conn_destroy_cmpl - process iscsi conn destroy completion | |
2243 | * @hba: adapter structure pointer | |
2244 | * @conn_destroy: conn destroy kcqe pointer | |
2245 | * | |
2246 | * handles connection destroy completion request. | |
2247 | */ | |
2248 | static void bnx2i_process_conn_destroy_cmpl(struct bnx2i_hba *hba, | |
2249 | struct iscsi_kcqe *conn_destroy) | |
2250 | { | |
2251 | struct bnx2i_endpoint *ep; | |
2252 | ||
2253 | ep = bnx2i_find_ep_in_destroy_list(hba, conn_destroy->iscsi_conn_id); | |
2254 | if (!ep) { | |
2255 | printk(KERN_ALERT "bnx2i_conn_destroy_cmpl: no pending " | |
2256 | "offload request, unexpected complection\n"); | |
2257 | return; | |
2258 | } | |
2259 | ||
2260 | if (hba != ep->hba) { | |
2261 | printk(KERN_ALERT "conn destroy- error hba mis-match\n"); | |
2262 | return; | |
2263 | } | |
2264 | ||
2265 | if (conn_destroy->completion_status) { | |
2266 | printk(KERN_ALERT "conn_destroy_cmpl: op failed\n"); | |
2267 | ep->state = EP_STATE_CLEANUP_FAILED; | |
2268 | } else | |
2269 | ep->state = EP_STATE_CLEANUP_CMPL; | |
2270 | wake_up_interruptible(&ep->ofld_wait); | |
2271 | } | |
2272 | ||
2273 | ||
2274 | /** | |
2275 | * bnx2i_process_ofld_cmpl - process initial iscsi conn offload completion | |
2276 | * @hba: adapter structure pointer | |
2277 | * @ofld_kcqe: conn offload kcqe pointer | |
2278 | * | |
2279 | * handles initial connection offload completion, ep_connect() thread is | |
2280 | * woken-up to continue with LLP connect process | |
2281 | */ | |
2282 | static void bnx2i_process_ofld_cmpl(struct bnx2i_hba *hba, | |
2283 | struct iscsi_kcqe *ofld_kcqe) | |
2284 | { | |
2285 | u32 cid_addr; | |
2286 | struct bnx2i_endpoint *ep; | |
2287 | u32 cid_num; | |
2288 | ||
2289 | ep = bnx2i_find_ep_in_ofld_list(hba, ofld_kcqe->iscsi_conn_id); | |
2290 | if (!ep) { | |
2291 | printk(KERN_ALERT "ofld_cmpl: no pend offload request\n"); | |
2292 | return; | |
2293 | } | |
2294 | ||
2295 | if (hba != ep->hba) { | |
2296 | printk(KERN_ALERT "ofld_cmpl: error hba mis-match\n"); | |
2297 | return; | |
2298 | } | |
2299 | ||
2300 | if (ofld_kcqe->completion_status) { | |
bee34877 | 2301 | ep->state = EP_STATE_OFLD_FAILED; |
cf4e6363 MC |
2302 | if (ofld_kcqe->completion_status == |
2303 | ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE) | |
bee34877 EW |
2304 | printk(KERN_ALERT "bnx2i (%s): ofld1 cmpl - unable " |
2305 | "to allocate iSCSI context resources\n", | |
2306 | hba->netdev->name); | |
2307 | else if (ofld_kcqe->completion_status == | |
2308 | ISCSI_KCQE_COMPLETION_STATUS_INVALID_OPCODE) | |
2309 | printk(KERN_ALERT "bnx2i (%s): ofld1 cmpl - invalid " | |
2310 | "opcode\n", hba->netdev->name); | |
2311 | else if (ofld_kcqe->completion_status == | |
2312 | ISCSI_KCQE_COMPLETION_STATUS_CID_BUSY) | |
2313 | /* error status code valid only for 5771x chipset */ | |
2314 | ep->state = EP_STATE_OFLD_FAILED_CID_BUSY; | |
2315 | else | |
2316 | printk(KERN_ALERT "bnx2i (%s): ofld1 cmpl - invalid " | |
2317 | "error code %d\n", hba->netdev->name, | |
2318 | ofld_kcqe->completion_status); | |
cf4e6363 MC |
2319 | } else { |
2320 | ep->state = EP_STATE_OFLD_COMPL; | |
2321 | cid_addr = ofld_kcqe->iscsi_conn_context_id; | |
2322 | cid_num = bnx2i_get_cid_num(ep); | |
2323 | ep->ep_cid = cid_addr; | |
2324 | ep->qp.ctx_base = NULL; | |
2325 | } | |
2326 | wake_up_interruptible(&ep->ofld_wait); | |
2327 | } | |
2328 | ||
2329 | /** | |
2330 | * bnx2i_indicate_kcqe - process iscsi conn update completion KCQE | |
2331 | * @hba: adapter structure pointer | |
2332 | * @update_kcqe: kcqe pointer | |
2333 | * | |
2334 | * Generic KCQ event handler/dispatcher | |
2335 | */ | |
2336 | static void bnx2i_indicate_kcqe(void *context, struct kcqe *kcqe[], | |
2337 | u32 num_cqe) | |
2338 | { | |
2339 | struct bnx2i_hba *hba = context; | |
2340 | int i = 0; | |
2341 | struct iscsi_kcqe *ikcqe = NULL; | |
2342 | ||
2343 | while (i < num_cqe) { | |
2344 | ikcqe = (struct iscsi_kcqe *) kcqe[i++]; | |
2345 | ||
2346 | if (ikcqe->op_code == | |
2347 | ISCSI_KCQE_OPCODE_CQ_EVENT_NOTIFICATION) | |
2348 | bnx2i_fastpath_notification(hba, ikcqe); | |
2349 | else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_OFFLOAD_CONN) | |
2350 | bnx2i_process_ofld_cmpl(hba, ikcqe); | |
2351 | else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_UPDATE_CONN) | |
2352 | bnx2i_process_update_conn_cmpl(hba, ikcqe); | |
2353 | else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_INIT) { | |
2354 | if (ikcqe->completion_status != | |
2355 | ISCSI_KCQE_COMPLETION_STATUS_SUCCESS) | |
2356 | bnx2i_iscsi_license_error(hba, ikcqe->\ | |
2357 | completion_status); | |
2358 | else { | |
2359 | set_bit(ADAPTER_STATE_UP, &hba->adapter_state); | |
2360 | bnx2i_get_link_state(hba); | |
2361 | printk(KERN_INFO "bnx2i [%.2x:%.2x.%.2x]: " | |
2362 | "ISCSI_INIT passed\n", | |
2363 | (u8)hba->pcidev->bus->number, | |
2364 | hba->pci_devno, | |
2365 | (u8)hba->pci_func); | |
2366 | ||
2367 | ||
2368 | } | |
2369 | } else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_DESTROY_CONN) | |
2370 | bnx2i_process_conn_destroy_cmpl(hba, ikcqe); | |
2371 | else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_ISCSI_ERROR) | |
2372 | bnx2i_process_iscsi_error(hba, ikcqe); | |
2373 | else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_TCP_ERROR) | |
2374 | bnx2i_process_tcp_error(hba, ikcqe); | |
2375 | else | |
2376 | printk(KERN_ALERT "bnx2i: unknown opcode 0x%x\n", | |
2377 | ikcqe->op_code); | |
2378 | } | |
2379 | } | |
2380 | ||
2381 | ||
2382 | /** | |
2383 | * bnx2i_indicate_netevent - Generic netdev event handler | |
2384 | * @context: adapter structure pointer | |
2385 | * @event: event type | |
2386 | * | |
2387 | * Handles four netdev events, NETDEV_UP, NETDEV_DOWN, | |
2388 | * NETDEV_GOING_DOWN and NETDEV_CHANGE | |
2389 | */ | |
2390 | static void bnx2i_indicate_netevent(void *context, unsigned long event) | |
2391 | { | |
2392 | struct bnx2i_hba *hba = context; | |
2393 | ||
2394 | switch (event) { | |
2395 | case NETDEV_UP: | |
2396 | if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) | |
2397 | bnx2i_send_fw_iscsi_init_msg(hba); | |
2398 | break; | |
2399 | case NETDEV_DOWN: | |
2400 | clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); | |
2401 | clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); | |
2402 | break; | |
2403 | case NETDEV_GOING_DOWN: | |
2404 | set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); | |
2405 | iscsi_host_for_each_session(hba->shost, | |
2406 | bnx2i_drop_session); | |
2407 | break; | |
2408 | case NETDEV_CHANGE: | |
2409 | bnx2i_get_link_state(hba); | |
2410 | break; | |
2411 | default: | |
2412 | ; | |
2413 | } | |
2414 | } | |
2415 | ||
2416 | ||
2417 | /** | |
2418 | * bnx2i_cm_connect_cmpl - process iscsi conn establishment completion | |
2419 | * @cm_sk: cnic sock structure pointer | |
2420 | * | |
2421 | * function callback exported via bnx2i - cnic driver interface to | |
2422 | * indicate completion of option-2 TCP connect request. | |
2423 | */ | |
2424 | static void bnx2i_cm_connect_cmpl(struct cnic_sock *cm_sk) | |
2425 | { | |
2426 | struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; | |
2427 | ||
2428 | if (test_bit(ADAPTER_STATE_GOING_DOWN, &ep->hba->adapter_state)) | |
2429 | ep->state = EP_STATE_CONNECT_FAILED; | |
2430 | else if (test_bit(SK_F_OFFLD_COMPLETE, &cm_sk->flags)) | |
2431 | ep->state = EP_STATE_CONNECT_COMPL; | |
2432 | else | |
2433 | ep->state = EP_STATE_CONNECT_FAILED; | |
2434 | ||
2435 | wake_up_interruptible(&ep->ofld_wait); | |
2436 | } | |
2437 | ||
2438 | ||
2439 | /** | |
2440 | * bnx2i_cm_close_cmpl - process tcp conn close completion | |
2441 | * @cm_sk: cnic sock structure pointer | |
2442 | * | |
2443 | * function callback exported via bnx2i - cnic driver interface to | |
2444 | * indicate completion of option-2 graceful TCP connect shutdown | |
2445 | */ | |
2446 | static void bnx2i_cm_close_cmpl(struct cnic_sock *cm_sk) | |
2447 | { | |
2448 | struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; | |
2449 | ||
2450 | ep->state = EP_STATE_DISCONN_COMPL; | |
2451 | wake_up_interruptible(&ep->ofld_wait); | |
2452 | } | |
2453 | ||
2454 | ||
2455 | /** | |
2456 | * bnx2i_cm_abort_cmpl - process abortive tcp conn teardown completion | |
2457 | * @cm_sk: cnic sock structure pointer | |
2458 | * | |
2459 | * function callback exported via bnx2i - cnic driver interface to | |
2460 | * indicate completion of option-2 abortive TCP connect termination | |
2461 | */ | |
2462 | static void bnx2i_cm_abort_cmpl(struct cnic_sock *cm_sk) | |
2463 | { | |
2464 | struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; | |
2465 | ||
2466 | ep->state = EP_STATE_DISCONN_COMPL; | |
2467 | wake_up_interruptible(&ep->ofld_wait); | |
2468 | } | |
2469 | ||
2470 | ||
2471 | /** | |
2472 | * bnx2i_cm_remote_close - process received TCP FIN | |
2473 | * @hba: adapter structure pointer | |
2474 | * @update_kcqe: kcqe pointer | |
2475 | * | |
2476 | * function callback exported via bnx2i - cnic driver interface to indicate | |
2477 | * async TCP events such as FIN | |
2478 | */ | |
2479 | static void bnx2i_cm_remote_close(struct cnic_sock *cm_sk) | |
2480 | { | |
2481 | struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; | |
2482 | ||
2483 | ep->state = EP_STATE_TCP_FIN_RCVD; | |
2484 | if (ep->conn) | |
2485 | bnx2i_recovery_que_add_conn(ep->hba, ep->conn); | |
2486 | } | |
2487 | ||
2488 | /** | |
2489 | * bnx2i_cm_remote_abort - process TCP RST and start conn cleanup | |
2490 | * @hba: adapter structure pointer | |
2491 | * @update_kcqe: kcqe pointer | |
2492 | * | |
2493 | * function callback exported via bnx2i - cnic driver interface to | |
2494 | * indicate async TCP events (RST) sent by the peer. | |
2495 | */ | |
2496 | static void bnx2i_cm_remote_abort(struct cnic_sock *cm_sk) | |
2497 | { | |
2498 | struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; | |
94810e82 | 2499 | u32 old_state = ep->state; |
cf4e6363 MC |
2500 | |
2501 | ep->state = EP_STATE_TCP_RST_RCVD; | |
94810e82 EW |
2502 | if (old_state == EP_STATE_DISCONN_START) |
2503 | wake_up_interruptible(&ep->ofld_wait); | |
2504 | else | |
2505 | if (ep->conn) | |
2506 | bnx2i_recovery_que_add_conn(ep->hba, ep->conn); | |
cf4e6363 MC |
2507 | } |
2508 | ||
2509 | ||
939b82e5 | 2510 | static int bnx2i_send_nl_mesg(void *context, u32 msg_type, |
cf4e6363 MC |
2511 | char *buf, u16 buflen) |
2512 | { | |
939b82e5 MC |
2513 | struct bnx2i_hba *hba = context; |
2514 | int rc; | |
cf4e6363 | 2515 | |
cf4e6363 | 2516 | if (!hba) |
939b82e5 | 2517 | return -ENODEV; |
cf4e6363 | 2518 | |
939b82e5 MC |
2519 | rc = iscsi_offload_mesg(hba->shost, &bnx2i_iscsi_transport, |
2520 | msg_type, buf, buflen); | |
2521 | if (rc) | |
cf4e6363 MC |
2522 | printk(KERN_ALERT "bnx2i: private nl message send error\n"); |
2523 | ||
939b82e5 | 2524 | return rc; |
cf4e6363 MC |
2525 | } |
2526 | ||
2527 | ||
2528 | /** | |
2529 | * bnx2i_cnic_cb - global template of bnx2i - cnic driver interface structure | |
2530 | * carrying callback function pointers | |
2531 | * | |
2532 | */ | |
2533 | struct cnic_ulp_ops bnx2i_cnic_cb = { | |
2534 | .cnic_init = bnx2i_ulp_init, | |
2535 | .cnic_exit = bnx2i_ulp_exit, | |
2536 | .cnic_start = bnx2i_start, | |
2537 | .cnic_stop = bnx2i_stop, | |
2538 | .indicate_kcqes = bnx2i_indicate_kcqe, | |
2539 | .indicate_netevent = bnx2i_indicate_netevent, | |
2540 | .cm_connect_complete = bnx2i_cm_connect_cmpl, | |
2541 | .cm_close_complete = bnx2i_cm_close_cmpl, | |
2542 | .cm_abort_complete = bnx2i_cm_abort_cmpl, | |
2543 | .cm_remote_close = bnx2i_cm_remote_close, | |
2544 | .cm_remote_abort = bnx2i_cm_remote_abort, | |
2545 | .iscsi_nl_send_msg = bnx2i_send_nl_mesg, | |
2546 | .owner = THIS_MODULE | |
2547 | }; | |
2548 | ||
2549 | ||
2550 | /** | |
2551 | * bnx2i_map_ep_dbell_regs - map connection doorbell registers | |
2552 | * @ep: bnx2i endpoint | |
2553 | * | |
2554 | * maps connection's SQ and RQ doorbell registers, 5706/5708/5709 hosts these | |
2555 | * register in BAR #0. Whereas in 57710 these register are accessed by | |
2556 | * mapping BAR #1 | |
2557 | */ | |
2558 | int bnx2i_map_ep_dbell_regs(struct bnx2i_endpoint *ep) | |
2559 | { | |
2560 | u32 cid_num; | |
2561 | u32 reg_off; | |
2562 | u32 first_l4l5; | |
2563 | u32 ctx_sz; | |
2564 | u32 config2; | |
2565 | resource_size_t reg_base; | |
2566 | ||
2567 | cid_num = bnx2i_get_cid_num(ep); | |
2568 | ||
2569 | if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { | |
2570 | reg_base = pci_resource_start(ep->hba->pcidev, | |
2571 | BNX2X_DOORBELL_PCI_BAR); | |
523224a3 DK |
2572 | reg_off = BNX2I_5771X_DBELL_PAGE_SIZE * (cid_num & 0x1FFFF) + |
2573 | DPM_TRIGER_TYPE; | |
cf4e6363 MC |
2574 | ep->qp.ctx_base = ioremap_nocache(reg_base + reg_off, 4); |
2575 | goto arm_cq; | |
2576 | } | |
2577 | ||
2578 | reg_base = ep->hba->netdev->base_addr; | |
2579 | if ((test_bit(BNX2I_NX2_DEV_5709, &ep->hba->cnic_dev_type)) && | |
2580 | (ep->hba->mail_queue_access == BNX2I_MQ_BIN_MODE)) { | |
2581 | config2 = REG_RD(ep->hba, BNX2_MQ_CONFIG2); | |
2582 | first_l4l5 = config2 & BNX2_MQ_CONFIG2_FIRST_L4L5; | |
2583 | ctx_sz = (config2 & BNX2_MQ_CONFIG2_CONT_SZ) >> 3; | |
2584 | if (ctx_sz) | |
2585 | reg_off = CTX_OFFSET + MAX_CID_CNT * MB_KERNEL_CTX_SIZE | |
53203244 | 2586 | + BNX2I_570X_PAGE_SIZE_DEFAULT * |
cf4e6363 MC |
2587 | (((cid_num - first_l4l5) / ctx_sz) + 256); |
2588 | else | |
2589 | reg_off = CTX_OFFSET + (MB_KERNEL_CTX_SIZE * cid_num); | |
2590 | } else | |
2591 | /* 5709 device in normal node and 5706/5708 devices */ | |
2592 | reg_off = CTX_OFFSET + (MB_KERNEL_CTX_SIZE * cid_num); | |
2593 | ||
2594 | ep->qp.ctx_base = ioremap_nocache(reg_base + reg_off, | |
2595 | MB_KERNEL_CTX_SIZE); | |
2596 | if (!ep->qp.ctx_base) | |
2597 | return -ENOMEM; | |
2598 | ||
2599 | arm_cq: | |
2600 | bnx2i_arm_cq_event_coalescing(ep, CNIC_ARM_CQE); | |
2601 | return 0; | |
2602 | } |