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cf4e6363 MC |
1 | /* bnx2i_hwi.c: Broadcom NetXtreme II iSCSI driver. |
2 | * | |
3 | * Copyright (c) 2006 - 2009 Broadcom Corporation | |
4 | * Copyright (c) 2007, 2008 Red Hat, Inc. All rights reserved. | |
5 | * Copyright (c) 2007, 2008 Mike Christie | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation. | |
10 | * | |
11 | * Written by: Anil Veerabhadrappa (anilgv@broadcom.com) | |
12 | */ | |
13 | ||
5a0e3ad6 | 14 | #include <linux/gfp.h> |
cf4e6363 MC |
15 | #include <scsi/scsi_tcq.h> |
16 | #include <scsi/libiscsi.h> | |
17 | #include "bnx2i.h" | |
18 | ||
19 | /** | |
20 | * bnx2i_get_cid_num - get cid from ep | |
21 | * @ep: endpoint pointer | |
22 | * | |
23 | * Only applicable to 57710 family of devices | |
24 | */ | |
25 | static u32 bnx2i_get_cid_num(struct bnx2i_endpoint *ep) | |
26 | { | |
27 | u32 cid; | |
28 | ||
29 | if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) | |
30 | cid = ep->ep_cid; | |
31 | else | |
32 | cid = GET_CID_NUM(ep->ep_cid); | |
33 | return cid; | |
34 | } | |
35 | ||
36 | ||
37 | /** | |
38 | * bnx2i_adjust_qp_size - Adjust SQ/RQ/CQ size for 57710 device type | |
39 | * @hba: Adapter for which adjustments is to be made | |
40 | * | |
41 | * Only applicable to 57710 family of devices | |
42 | */ | |
43 | static void bnx2i_adjust_qp_size(struct bnx2i_hba *hba) | |
44 | { | |
45 | u32 num_elements_per_pg; | |
46 | ||
47 | if (test_bit(BNX2I_NX2_DEV_5706, &hba->cnic_dev_type) || | |
48 | test_bit(BNX2I_NX2_DEV_5708, &hba->cnic_dev_type) || | |
49 | test_bit(BNX2I_NX2_DEV_5709, &hba->cnic_dev_type)) { | |
50 | if (!is_power_of_2(hba->max_sqes)) | |
51 | hba->max_sqes = rounddown_pow_of_two(hba->max_sqes); | |
52 | ||
53 | if (!is_power_of_2(hba->max_rqes)) | |
54 | hba->max_rqes = rounddown_pow_of_two(hba->max_rqes); | |
55 | } | |
56 | ||
57 | /* Adjust each queue size if the user selection does not | |
58 | * yield integral num of page buffers | |
59 | */ | |
60 | /* adjust SQ */ | |
61 | num_elements_per_pg = PAGE_SIZE / BNX2I_SQ_WQE_SIZE; | |
62 | if (hba->max_sqes < num_elements_per_pg) | |
63 | hba->max_sqes = num_elements_per_pg; | |
64 | else if (hba->max_sqes % num_elements_per_pg) | |
65 | hba->max_sqes = (hba->max_sqes + num_elements_per_pg - 1) & | |
66 | ~(num_elements_per_pg - 1); | |
67 | ||
68 | /* adjust CQ */ | |
69 | num_elements_per_pg = PAGE_SIZE / BNX2I_CQE_SIZE; | |
70 | if (hba->max_cqes < num_elements_per_pg) | |
71 | hba->max_cqes = num_elements_per_pg; | |
72 | else if (hba->max_cqes % num_elements_per_pg) | |
73 | hba->max_cqes = (hba->max_cqes + num_elements_per_pg - 1) & | |
74 | ~(num_elements_per_pg - 1); | |
75 | ||
76 | /* adjust RQ */ | |
77 | num_elements_per_pg = PAGE_SIZE / BNX2I_RQ_WQE_SIZE; | |
78 | if (hba->max_rqes < num_elements_per_pg) | |
79 | hba->max_rqes = num_elements_per_pg; | |
80 | else if (hba->max_rqes % num_elements_per_pg) | |
81 | hba->max_rqes = (hba->max_rqes + num_elements_per_pg - 1) & | |
82 | ~(num_elements_per_pg - 1); | |
83 | } | |
84 | ||
85 | ||
86 | /** | |
87 | * bnx2i_get_link_state - get network interface link state | |
88 | * @hba: adapter instance pointer | |
89 | * | |
90 | * updates adapter structure flag based on netdev state | |
91 | */ | |
92 | static void bnx2i_get_link_state(struct bnx2i_hba *hba) | |
93 | { | |
94 | if (test_bit(__LINK_STATE_NOCARRIER, &hba->netdev->state)) | |
95 | set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); | |
96 | else | |
97 | clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); | |
98 | } | |
99 | ||
100 | ||
101 | /** | |
102 | * bnx2i_iscsi_license_error - displays iscsi license related error message | |
103 | * @hba: adapter instance pointer | |
104 | * @error_code: error classification | |
105 | * | |
106 | * Puts out an error log when driver is unable to offload iscsi connection | |
107 | * due to license restrictions | |
108 | */ | |
109 | static void bnx2i_iscsi_license_error(struct bnx2i_hba *hba, u32 error_code) | |
110 | { | |
111 | if (error_code == ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED) | |
112 | /* iSCSI offload not supported on this device */ | |
113 | printk(KERN_ERR "bnx2i: iSCSI not supported, dev=%s\n", | |
114 | hba->netdev->name); | |
115 | if (error_code == ISCSI_KCQE_COMPLETION_STATUS_LOM_ISCSI_NOT_ENABLED) | |
116 | /* iSCSI offload not supported on this LOM device */ | |
117 | printk(KERN_ERR "bnx2i: LOM is not enable to " | |
118 | "offload iSCSI connections, dev=%s\n", | |
119 | hba->netdev->name); | |
120 | set_bit(ADAPTER_STATE_INIT_FAILED, &hba->adapter_state); | |
121 | } | |
122 | ||
123 | ||
124 | /** | |
125 | * bnx2i_arm_cq_event_coalescing - arms CQ to enable EQ notification | |
126 | * @ep: endpoint (transport indentifier) structure | |
127 | * @action: action, ARM or DISARM. For now only ARM_CQE is used | |
128 | * | |
129 | * Arm'ing CQ will enable chip to generate global EQ events inorder to interrupt | |
130 | * the driver. EQ event is generated CQ index is hit or at least 1 CQ is | |
131 | * outstanding and on chip timer expires | |
132 | */ | |
133 | void bnx2i_arm_cq_event_coalescing(struct bnx2i_endpoint *ep, u8 action) | |
134 | { | |
135 | struct bnx2i_5771x_cq_db *cq_db; | |
136 | u16 cq_index; | |
8776193b AV |
137 | u16 next_index; |
138 | u32 num_active_cmds; | |
cf4e6363 | 139 | |
8776193b AV |
140 | |
141 | /* Coalesce CQ entries only on 10G devices */ | |
cf4e6363 MC |
142 | if (!test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) |
143 | return; | |
144 | ||
8776193b AV |
145 | /* Do not update CQ DB multiple times before firmware writes |
146 | * '0xFFFF' to CQDB->SQN field. Deviation may cause spurious | |
147 | * interrupts and other unwanted results | |
148 | */ | |
149 | cq_db = (struct bnx2i_5771x_cq_db *) ep->qp.cq_pgtbl_virt; | |
150 | if (cq_db->sqn[0] && cq_db->sqn[0] != 0xFFFF) | |
151 | return; | |
152 | ||
cf4e6363 | 153 | if (action == CNIC_ARM_CQE) { |
8776193b AV |
154 | num_active_cmds = ep->num_active_cmds; |
155 | if (num_active_cmds <= event_coal_min) | |
156 | next_index = 1; | |
157 | else | |
158 | next_index = event_coal_min + | |
159 | (num_active_cmds - event_coal_min) / event_coal_div; | |
160 | if (!next_index) | |
161 | next_index = 1; | |
162 | cq_index = ep->qp.cqe_exp_seq_sn + next_index - 1; | |
163 | if (cq_index > ep->qp.cqe_size * 2) | |
164 | cq_index -= ep->qp.cqe_size * 2; | |
165 | if (!cq_index) | |
cf4e6363 | 166 | cq_index = 1; |
8776193b AV |
167 | |
168 | cq_db->sqn[0] = cq_index; | |
cf4e6363 MC |
169 | } |
170 | } | |
171 | ||
172 | ||
173 | /** | |
174 | * bnx2i_get_rq_buf - copy RQ buffer contents to driver buffer | |
175 | * @conn: iscsi connection on which RQ event occured | |
176 | * @ptr: driver buffer to which RQ buffer contents is to | |
177 | * be copied | |
178 | * @len: length of valid data inside RQ buf | |
179 | * | |
180 | * Copies RQ buffer contents from shared (DMA'able) memory region to | |
181 | * driver buffer. RQ is used to DMA unsolicitated iscsi pdu's and | |
182 | * scsi sense info | |
183 | */ | |
184 | void bnx2i_get_rq_buf(struct bnx2i_conn *bnx2i_conn, char *ptr, int len) | |
185 | { | |
186 | if (!bnx2i_conn->ep->qp.rqe_left) | |
187 | return; | |
188 | ||
189 | bnx2i_conn->ep->qp.rqe_left--; | |
190 | memcpy(ptr, (u8 *) bnx2i_conn->ep->qp.rq_cons_qe, len); | |
191 | if (bnx2i_conn->ep->qp.rq_cons_qe == bnx2i_conn->ep->qp.rq_last_qe) { | |
192 | bnx2i_conn->ep->qp.rq_cons_qe = bnx2i_conn->ep->qp.rq_first_qe; | |
193 | bnx2i_conn->ep->qp.rq_cons_idx = 0; | |
194 | } else { | |
195 | bnx2i_conn->ep->qp.rq_cons_qe++; | |
196 | bnx2i_conn->ep->qp.rq_cons_idx++; | |
197 | } | |
198 | } | |
199 | ||
200 | ||
201 | static void bnx2i_ring_577xx_doorbell(struct bnx2i_conn *conn) | |
202 | { | |
203 | struct bnx2i_5771x_dbell dbell; | |
204 | u32 msg; | |
205 | ||
206 | memset(&dbell, 0, sizeof(dbell)); | |
207 | dbell.dbell.header = (B577XX_ISCSI_CONNECTION_TYPE << | |
208 | B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT); | |
209 | msg = *((u32 *)&dbell); | |
210 | /* TODO : get doorbell register mapping */ | |
211 | writel(cpu_to_le32(msg), conn->ep->qp.ctx_base); | |
212 | } | |
213 | ||
214 | ||
215 | /** | |
216 | * bnx2i_put_rq_buf - Replenish RQ buffer, if required ring on chip doorbell | |
217 | * @conn: iscsi connection on which event to post | |
218 | * @count: number of RQ buffer being posted to chip | |
219 | * | |
220 | * No need to ring hardware doorbell for 57710 family of devices | |
221 | */ | |
222 | void bnx2i_put_rq_buf(struct bnx2i_conn *bnx2i_conn, int count) | |
223 | { | |
224 | struct bnx2i_5771x_sq_rq_db *rq_db; | |
225 | u16 hi_bit = (bnx2i_conn->ep->qp.rq_prod_idx & 0x8000); | |
226 | struct bnx2i_endpoint *ep = bnx2i_conn->ep; | |
227 | ||
228 | ep->qp.rqe_left += count; | |
229 | ep->qp.rq_prod_idx &= 0x7FFF; | |
230 | ep->qp.rq_prod_idx += count; | |
231 | ||
232 | if (ep->qp.rq_prod_idx > bnx2i_conn->hba->max_rqes) { | |
233 | ep->qp.rq_prod_idx %= bnx2i_conn->hba->max_rqes; | |
234 | if (!hi_bit) | |
235 | ep->qp.rq_prod_idx |= 0x8000; | |
236 | } else | |
237 | ep->qp.rq_prod_idx |= hi_bit; | |
238 | ||
239 | if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { | |
240 | rq_db = (struct bnx2i_5771x_sq_rq_db *) ep->qp.rq_pgtbl_virt; | |
241 | rq_db->prod_idx = ep->qp.rq_prod_idx; | |
242 | /* no need to ring hardware doorbell for 57710 */ | |
243 | } else { | |
244 | writew(ep->qp.rq_prod_idx, | |
245 | ep->qp.ctx_base + CNIC_RECV_DOORBELL); | |
246 | } | |
247 | mmiowb(); | |
248 | } | |
249 | ||
250 | ||
251 | /** | |
252 | * bnx2i_ring_sq_dbell - Ring SQ doorbell to wake-up the processing engine | |
253 | * @conn: iscsi connection to which new SQ entries belong | |
254 | * @count: number of SQ WQEs to post | |
255 | * | |
256 | * SQ DB is updated in host memory and TX Doorbell is rung for 57710 family | |
257 | * of devices. For 5706/5708/5709 new SQ WQE count is written into the | |
258 | * doorbell register | |
259 | */ | |
260 | static void bnx2i_ring_sq_dbell(struct bnx2i_conn *bnx2i_conn, int count) | |
261 | { | |
262 | struct bnx2i_5771x_sq_rq_db *sq_db; | |
263 | struct bnx2i_endpoint *ep = bnx2i_conn->ep; | |
264 | ||
265 | ep->num_active_cmds++; | |
266 | wmb(); /* flush SQ WQE memory before the doorbell is rung */ | |
267 | if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { | |
268 | sq_db = (struct bnx2i_5771x_sq_rq_db *) ep->qp.sq_pgtbl_virt; | |
269 | sq_db->prod_idx = ep->qp.sq_prod_idx; | |
270 | bnx2i_ring_577xx_doorbell(bnx2i_conn); | |
271 | } else | |
272 | writew(count, ep->qp.ctx_base + CNIC_SEND_DOORBELL); | |
273 | ||
274 | mmiowb(); /* flush posted PCI writes */ | |
275 | } | |
276 | ||
277 | ||
278 | /** | |
279 | * bnx2i_ring_dbell_update_sq_params - update SQ driver parameters | |
280 | * @conn: iscsi connection to which new SQ entries belong | |
281 | * @count: number of SQ WQEs to post | |
282 | * | |
283 | * this routine will update SQ driver parameters and ring the doorbell | |
284 | */ | |
285 | static void bnx2i_ring_dbell_update_sq_params(struct bnx2i_conn *bnx2i_conn, | |
286 | int count) | |
287 | { | |
288 | int tmp_cnt; | |
289 | ||
290 | if (count == 1) { | |
291 | if (bnx2i_conn->ep->qp.sq_prod_qe == | |
292 | bnx2i_conn->ep->qp.sq_last_qe) | |
293 | bnx2i_conn->ep->qp.sq_prod_qe = | |
294 | bnx2i_conn->ep->qp.sq_first_qe; | |
295 | else | |
296 | bnx2i_conn->ep->qp.sq_prod_qe++; | |
297 | } else { | |
298 | if ((bnx2i_conn->ep->qp.sq_prod_qe + count) <= | |
299 | bnx2i_conn->ep->qp.sq_last_qe) | |
300 | bnx2i_conn->ep->qp.sq_prod_qe += count; | |
301 | else { | |
302 | tmp_cnt = bnx2i_conn->ep->qp.sq_last_qe - | |
303 | bnx2i_conn->ep->qp.sq_prod_qe; | |
304 | bnx2i_conn->ep->qp.sq_prod_qe = | |
305 | &bnx2i_conn->ep->qp.sq_first_qe[count - | |
306 | (tmp_cnt + 1)]; | |
307 | } | |
308 | } | |
309 | bnx2i_conn->ep->qp.sq_prod_idx += count; | |
310 | /* Ring the doorbell */ | |
311 | bnx2i_ring_sq_dbell(bnx2i_conn, bnx2i_conn->ep->qp.sq_prod_idx); | |
312 | } | |
313 | ||
314 | ||
315 | /** | |
316 | * bnx2i_send_iscsi_login - post iSCSI login request MP WQE to hardware | |
317 | * @conn: iscsi connection | |
318 | * @cmd: driver command structure which is requesting | |
319 | * a WQE to sent to chip for further processing | |
320 | * | |
321 | * prepare and post an iSCSI Login request WQE to CNIC firmware | |
322 | */ | |
323 | int bnx2i_send_iscsi_login(struct bnx2i_conn *bnx2i_conn, | |
324 | struct iscsi_task *task) | |
325 | { | |
326 | struct bnx2i_cmd *bnx2i_cmd; | |
327 | struct bnx2i_login_request *login_wqe; | |
328 | struct iscsi_login *login_hdr; | |
329 | u32 dword; | |
330 | ||
331 | bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data; | |
332 | login_hdr = (struct iscsi_login *)task->hdr; | |
333 | login_wqe = (struct bnx2i_login_request *) | |
334 | bnx2i_conn->ep->qp.sq_prod_qe; | |
335 | ||
336 | login_wqe->op_code = login_hdr->opcode; | |
337 | login_wqe->op_attr = login_hdr->flags; | |
338 | login_wqe->version_max = login_hdr->max_version; | |
339 | login_wqe->version_min = login_hdr->min_version; | |
340 | login_wqe->data_length = ntoh24(login_hdr->dlength); | |
341 | login_wqe->isid_lo = *((u32 *) login_hdr->isid); | |
342 | login_wqe->isid_hi = *((u16 *) login_hdr->isid + 2); | |
343 | login_wqe->tsih = login_hdr->tsih; | |
344 | login_wqe->itt = task->itt | | |
345 | (ISCSI_TASK_TYPE_MPATH << ISCSI_LOGIN_REQUEST_TYPE_SHIFT); | |
346 | login_wqe->cid = login_hdr->cid; | |
347 | ||
348 | login_wqe->cmd_sn = be32_to_cpu(login_hdr->cmdsn); | |
349 | login_wqe->exp_stat_sn = be32_to_cpu(login_hdr->exp_statsn); | |
350 | ||
351 | login_wqe->resp_bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.resp_bd_dma; | |
352 | login_wqe->resp_bd_list_addr_hi = | |
353 | (u32) ((u64) bnx2i_conn->gen_pdu.resp_bd_dma >> 32); | |
354 | ||
355 | dword = ((1 << ISCSI_LOGIN_REQUEST_NUM_RESP_BDS_SHIFT) | | |
356 | (bnx2i_conn->gen_pdu.resp_buf_size << | |
357 | ISCSI_LOGIN_REQUEST_RESP_BUFFER_LENGTH_SHIFT)); | |
358 | login_wqe->resp_buffer = dword; | |
359 | login_wqe->flags = 0; | |
360 | login_wqe->bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.req_bd_dma; | |
361 | login_wqe->bd_list_addr_hi = | |
362 | (u32) ((u64) bnx2i_conn->gen_pdu.req_bd_dma >> 32); | |
363 | login_wqe->num_bds = 1; | |
364 | login_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ | |
365 | ||
366 | bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); | |
367 | return 0; | |
368 | } | |
369 | ||
370 | /** | |
371 | * bnx2i_send_iscsi_tmf - post iSCSI task management request MP WQE to hardware | |
372 | * @conn: iscsi connection | |
373 | * @mtask: driver command structure which is requesting | |
374 | * a WQE to sent to chip for further processing | |
375 | * | |
376 | * prepare and post an iSCSI Login request WQE to CNIC firmware | |
377 | */ | |
378 | int bnx2i_send_iscsi_tmf(struct bnx2i_conn *bnx2i_conn, | |
379 | struct iscsi_task *mtask) | |
380 | { | |
381 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
382 | struct iscsi_tm *tmfabort_hdr; | |
383 | struct scsi_cmnd *ref_sc; | |
384 | struct iscsi_task *ctask; | |
385 | struct bnx2i_cmd *bnx2i_cmd; | |
386 | struct bnx2i_tmf_request *tmfabort_wqe; | |
387 | u32 dword; | |
85fef202 | 388 | u32 scsi_lun[2]; |
cf4e6363 MC |
389 | |
390 | bnx2i_cmd = (struct bnx2i_cmd *)mtask->dd_data; | |
391 | tmfabort_hdr = (struct iscsi_tm *)mtask->hdr; | |
392 | tmfabort_wqe = (struct bnx2i_tmf_request *) | |
393 | bnx2i_conn->ep->qp.sq_prod_qe; | |
394 | ||
395 | tmfabort_wqe->op_code = tmfabort_hdr->opcode; | |
396 | tmfabort_wqe->op_attr = 0; | |
397 | tmfabort_wqe->op_attr = | |
398 | ISCSI_TMF_REQUEST_ALWAYS_ONE | ISCSI_TM_FUNC_ABORT_TASK; | |
cf4e6363 MC |
399 | |
400 | tmfabort_wqe->itt = (mtask->itt | (ISCSI_TASK_TYPE_MPATH << 14)); | |
401 | tmfabort_wqe->reserved2 = 0; | |
402 | tmfabort_wqe->cmd_sn = be32_to_cpu(tmfabort_hdr->cmdsn); | |
403 | ||
404 | ctask = iscsi_itt_to_task(conn, tmfabort_hdr->rtt); | |
85fef202 | 405 | if (!ctask || !ctask->sc) |
cf4e6363 MC |
406 | /* |
407 | * the iscsi layer must have completed the cmd while this | |
408 | * was starting up. | |
85fef202 AV |
409 | * |
410 | * Note: In the case of a SCSI cmd timeout, the task's sc | |
411 | * is still active; hence ctask->sc != 0 | |
412 | * In this case, the task must be aborted | |
cf4e6363 MC |
413 | */ |
414 | return 0; | |
85fef202 | 415 | |
cf4e6363 MC |
416 | ref_sc = ctask->sc; |
417 | ||
85fef202 AV |
418 | /* Retrieve LUN directly from the ref_sc */ |
419 | int_to_scsilun(ref_sc->device->lun, (struct scsi_lun *) scsi_lun); | |
420 | tmfabort_wqe->lun[0] = be32_to_cpu(scsi_lun[0]); | |
421 | tmfabort_wqe->lun[1] = be32_to_cpu(scsi_lun[1]); | |
422 | ||
cf4e6363 MC |
423 | if (ref_sc->sc_data_direction == DMA_TO_DEVICE) |
424 | dword = (ISCSI_TASK_TYPE_WRITE << ISCSI_CMD_REQUEST_TYPE_SHIFT); | |
425 | else | |
426 | dword = (ISCSI_TASK_TYPE_READ << ISCSI_CMD_REQUEST_TYPE_SHIFT); | |
85fef202 | 427 | tmfabort_wqe->ref_itt = (dword | (tmfabort_hdr->rtt & ISCSI_ITT_MASK)); |
cf4e6363 MC |
428 | tmfabort_wqe->ref_cmd_sn = be32_to_cpu(tmfabort_hdr->refcmdsn); |
429 | ||
430 | tmfabort_wqe->bd_list_addr_lo = (u32) bnx2i_conn->hba->mp_bd_dma; | |
431 | tmfabort_wqe->bd_list_addr_hi = (u32) | |
432 | ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); | |
433 | tmfabort_wqe->num_bds = 1; | |
434 | tmfabort_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ | |
435 | ||
436 | bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); | |
437 | return 0; | |
438 | } | |
439 | ||
440 | /** | |
441 | * bnx2i_send_iscsi_scsicmd - post iSCSI scsicmd request WQE to hardware | |
442 | * @conn: iscsi connection | |
443 | * @cmd: driver command structure which is requesting | |
444 | * a WQE to sent to chip for further processing | |
445 | * | |
446 | * prepare and post an iSCSI SCSI-CMD request WQE to CNIC firmware | |
447 | */ | |
448 | int bnx2i_send_iscsi_scsicmd(struct bnx2i_conn *bnx2i_conn, | |
449 | struct bnx2i_cmd *cmd) | |
450 | { | |
451 | struct bnx2i_cmd_request *scsi_cmd_wqe; | |
452 | ||
453 | scsi_cmd_wqe = (struct bnx2i_cmd_request *) | |
454 | bnx2i_conn->ep->qp.sq_prod_qe; | |
455 | memcpy(scsi_cmd_wqe, &cmd->req, sizeof(struct bnx2i_cmd_request)); | |
456 | scsi_cmd_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ | |
457 | ||
458 | bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); | |
459 | return 0; | |
460 | } | |
461 | ||
462 | /** | |
463 | * bnx2i_send_iscsi_nopout - post iSCSI NOPOUT request WQE to hardware | |
464 | * @conn: iscsi connection | |
465 | * @cmd: driver command structure which is requesting | |
466 | * a WQE to sent to chip for further processing | |
467 | * @ttt: TTT to be used when building pdu header | |
468 | * @datap: payload buffer pointer | |
469 | * @data_len: payload data length | |
470 | * @unsol: indicated whether nopout pdu is unsolicited pdu or | |
471 | * in response to target's NOPIN w/ TTT != FFFFFFFF | |
472 | * | |
473 | * prepare and post a nopout request WQE to CNIC firmware | |
474 | */ | |
475 | int bnx2i_send_iscsi_nopout(struct bnx2i_conn *bnx2i_conn, | |
476 | struct iscsi_task *task, u32 ttt, | |
477 | char *datap, int data_len, int unsol) | |
478 | { | |
479 | struct bnx2i_endpoint *ep = bnx2i_conn->ep; | |
480 | struct bnx2i_cmd *bnx2i_cmd; | |
481 | struct bnx2i_nop_out_request *nopout_wqe; | |
482 | struct iscsi_nopout *nopout_hdr; | |
483 | ||
484 | bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data; | |
485 | nopout_hdr = (struct iscsi_nopout *)task->hdr; | |
486 | nopout_wqe = (struct bnx2i_nop_out_request *)ep->qp.sq_prod_qe; | |
487 | nopout_wqe->op_code = nopout_hdr->opcode; | |
488 | nopout_wqe->op_attr = ISCSI_FLAG_CMD_FINAL; | |
489 | memcpy(nopout_wqe->lun, nopout_hdr->lun, 8); | |
490 | ||
491 | if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { | |
492 | u32 tmp = nopout_hdr->lun[0]; | |
493 | /* 57710 requires LUN field to be swapped */ | |
494 | nopout_hdr->lun[0] = nopout_hdr->lun[1]; | |
495 | nopout_hdr->lun[1] = tmp; | |
496 | } | |
497 | ||
498 | nopout_wqe->itt = ((u16)task->itt | | |
499 | (ISCSI_TASK_TYPE_MPATH << | |
500 | ISCSI_TMF_REQUEST_TYPE_SHIFT)); | |
501 | nopout_wqe->ttt = ttt; | |
502 | nopout_wqe->flags = 0; | |
503 | if (!unsol) | |
504 | nopout_wqe->flags = ISCSI_NOP_OUT_REQUEST_LOCAL_COMPLETION; | |
505 | else if (nopout_hdr->itt == RESERVED_ITT) | |
506 | nopout_wqe->flags = ISCSI_NOP_OUT_REQUEST_LOCAL_COMPLETION; | |
507 | ||
508 | nopout_wqe->cmd_sn = be32_to_cpu(nopout_hdr->cmdsn); | |
509 | nopout_wqe->data_length = data_len; | |
510 | if (data_len) { | |
511 | /* handle payload data, not required in first release */ | |
512 | printk(KERN_ALERT "NOPOUT: WARNING!! payload len != 0\n"); | |
513 | } else { | |
514 | nopout_wqe->bd_list_addr_lo = (u32) | |
515 | bnx2i_conn->hba->mp_bd_dma; | |
516 | nopout_wqe->bd_list_addr_hi = | |
517 | (u32) ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); | |
518 | nopout_wqe->num_bds = 1; | |
519 | } | |
520 | nopout_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ | |
521 | ||
522 | bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); | |
523 | return 0; | |
524 | } | |
525 | ||
526 | ||
527 | /** | |
528 | * bnx2i_send_iscsi_logout - post iSCSI logout request WQE to hardware | |
529 | * @conn: iscsi connection | |
530 | * @cmd: driver command structure which is requesting | |
531 | * a WQE to sent to chip for further processing | |
532 | * | |
533 | * prepare and post logout request WQE to CNIC firmware | |
534 | */ | |
535 | int bnx2i_send_iscsi_logout(struct bnx2i_conn *bnx2i_conn, | |
536 | struct iscsi_task *task) | |
537 | { | |
538 | struct bnx2i_cmd *bnx2i_cmd; | |
539 | struct bnx2i_logout_request *logout_wqe; | |
540 | struct iscsi_logout *logout_hdr; | |
541 | ||
542 | bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data; | |
543 | logout_hdr = (struct iscsi_logout *)task->hdr; | |
544 | ||
545 | logout_wqe = (struct bnx2i_logout_request *) | |
546 | bnx2i_conn->ep->qp.sq_prod_qe; | |
547 | memset(logout_wqe, 0x00, sizeof(struct bnx2i_logout_request)); | |
548 | ||
549 | logout_wqe->op_code = logout_hdr->opcode; | |
550 | logout_wqe->cmd_sn = be32_to_cpu(logout_hdr->cmdsn); | |
551 | logout_wqe->op_attr = | |
552 | logout_hdr->flags | ISCSI_LOGOUT_REQUEST_ALWAYS_ONE; | |
553 | logout_wqe->itt = ((u16)task->itt | | |
554 | (ISCSI_TASK_TYPE_MPATH << | |
555 | ISCSI_LOGOUT_REQUEST_TYPE_SHIFT)); | |
556 | logout_wqe->data_length = 0; | |
557 | logout_wqe->cid = 0; | |
558 | ||
559 | logout_wqe->bd_list_addr_lo = (u32) bnx2i_conn->hba->mp_bd_dma; | |
560 | logout_wqe->bd_list_addr_hi = (u32) | |
561 | ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); | |
562 | logout_wqe->num_bds = 1; | |
563 | logout_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ | |
564 | ||
565 | bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); | |
566 | return 0; | |
567 | } | |
568 | ||
569 | ||
570 | /** | |
571 | * bnx2i_update_iscsi_conn - post iSCSI logout request WQE to hardware | |
572 | * @conn: iscsi connection which requires iscsi parameter update | |
573 | * | |
574 | * sends down iSCSI Conn Update request to move iSCSI conn to FFP | |
575 | */ | |
576 | void bnx2i_update_iscsi_conn(struct iscsi_conn *conn) | |
577 | { | |
578 | struct bnx2i_conn *bnx2i_conn = conn->dd_data; | |
579 | struct bnx2i_hba *hba = bnx2i_conn->hba; | |
580 | struct kwqe *kwqe_arr[2]; | |
581 | struct iscsi_kwqe_conn_update *update_wqe; | |
582 | struct iscsi_kwqe_conn_update conn_update_kwqe; | |
583 | ||
584 | update_wqe = &conn_update_kwqe; | |
585 | ||
586 | update_wqe->hdr.op_code = ISCSI_KWQE_OPCODE_UPDATE_CONN; | |
587 | update_wqe->hdr.flags = | |
588 | (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); | |
589 | ||
590 | /* 5771x requires conn context id to be passed as is */ | |
591 | if (test_bit(BNX2I_NX2_DEV_57710, &bnx2i_conn->ep->hba->cnic_dev_type)) | |
592 | update_wqe->context_id = bnx2i_conn->ep->ep_cid; | |
593 | else | |
594 | update_wqe->context_id = (bnx2i_conn->ep->ep_cid >> 7); | |
595 | update_wqe->conn_flags = 0; | |
596 | if (conn->hdrdgst_en) | |
597 | update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_HEADER_DIGEST; | |
598 | if (conn->datadgst_en) | |
599 | update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_DATA_DIGEST; | |
600 | if (conn->session->initial_r2t_en) | |
601 | update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_INITIAL_R2T; | |
602 | if (conn->session->imm_data_en) | |
603 | update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_IMMEDIATE_DATA; | |
604 | ||
605 | update_wqe->max_send_pdu_length = conn->max_xmit_dlength; | |
606 | update_wqe->max_recv_pdu_length = conn->max_recv_dlength; | |
607 | update_wqe->first_burst_length = conn->session->first_burst; | |
608 | update_wqe->max_burst_length = conn->session->max_burst; | |
609 | update_wqe->exp_stat_sn = conn->exp_statsn; | |
610 | update_wqe->max_outstanding_r2ts = conn->session->max_r2t; | |
611 | update_wqe->session_error_recovery_level = conn->session->erl; | |
612 | iscsi_conn_printk(KERN_ALERT, conn, | |
613 | "bnx2i: conn update - MBL 0x%x FBL 0x%x" | |
614 | "MRDSL_I 0x%x MRDSL_T 0x%x \n", | |
615 | update_wqe->max_burst_length, | |
616 | update_wqe->first_burst_length, | |
617 | update_wqe->max_recv_pdu_length, | |
618 | update_wqe->max_send_pdu_length); | |
619 | ||
620 | kwqe_arr[0] = (struct kwqe *) update_wqe; | |
621 | if (hba->cnic && hba->cnic->submit_kwqes) | |
622 | hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 1); | |
623 | } | |
624 | ||
625 | ||
626 | /** | |
627 | * bnx2i_ep_ofld_timer - post iSCSI logout request WQE to hardware | |
628 | * @data: endpoint (transport handle) structure pointer | |
629 | * | |
630 | * routine to handle connection offload/destroy request timeout | |
631 | */ | |
632 | void bnx2i_ep_ofld_timer(unsigned long data) | |
633 | { | |
634 | struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) data; | |
635 | ||
636 | if (ep->state == EP_STATE_OFLD_START) { | |
637 | printk(KERN_ALERT "ofld_timer: CONN_OFLD timeout\n"); | |
638 | ep->state = EP_STATE_OFLD_FAILED; | |
639 | } else if (ep->state == EP_STATE_DISCONN_START) { | |
640 | printk(KERN_ALERT "ofld_timer: CONN_DISCON timeout\n"); | |
641 | ep->state = EP_STATE_DISCONN_TIMEDOUT; | |
642 | } else if (ep->state == EP_STATE_CLEANUP_START) { | |
643 | printk(KERN_ALERT "ofld_timer: CONN_CLEANUP timeout\n"); | |
644 | ep->state = EP_STATE_CLEANUP_FAILED; | |
645 | } | |
646 | ||
647 | wake_up_interruptible(&ep->ofld_wait); | |
648 | } | |
649 | ||
650 | ||
651 | static int bnx2i_power_of2(u32 val) | |
652 | { | |
653 | u32 power = 0; | |
654 | if (val & (val - 1)) | |
655 | return power; | |
656 | val--; | |
657 | while (val) { | |
658 | val = val >> 1; | |
659 | power++; | |
660 | } | |
661 | return power; | |
662 | } | |
663 | ||
664 | ||
665 | /** | |
666 | * bnx2i_send_cmd_cleanup_req - send iscsi cmd context clean-up request | |
667 | * @hba: adapter structure pointer | |
668 | * @cmd: driver command structure which is requesting | |
669 | * a WQE to sent to chip for further processing | |
670 | * | |
671 | * prepares and posts CONN_OFLD_REQ1/2 KWQE | |
672 | */ | |
673 | void bnx2i_send_cmd_cleanup_req(struct bnx2i_hba *hba, struct bnx2i_cmd *cmd) | |
674 | { | |
675 | struct bnx2i_cleanup_request *cmd_cleanup; | |
676 | ||
677 | cmd_cleanup = | |
678 | (struct bnx2i_cleanup_request *)cmd->conn->ep->qp.sq_prod_qe; | |
679 | memset(cmd_cleanup, 0x00, sizeof(struct bnx2i_cleanup_request)); | |
680 | ||
681 | cmd_cleanup->op_code = ISCSI_OPCODE_CLEANUP_REQUEST; | |
682 | cmd_cleanup->itt = cmd->req.itt; | |
683 | cmd_cleanup->cq_index = 0; /* CQ# used for completion, 5771x only */ | |
684 | ||
685 | bnx2i_ring_dbell_update_sq_params(cmd->conn, 1); | |
686 | } | |
687 | ||
688 | ||
689 | /** | |
690 | * bnx2i_send_conn_destroy - initiates iscsi connection teardown process | |
691 | * @hba: adapter structure pointer | |
692 | * @ep: endpoint (transport indentifier) structure | |
693 | * | |
694 | * this routine prepares and posts CONN_OFLD_REQ1/2 KWQE to initiate | |
695 | * iscsi connection context clean-up process | |
696 | */ | |
697 | void bnx2i_send_conn_destroy(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) | |
698 | { | |
699 | struct kwqe *kwqe_arr[2]; | |
700 | struct iscsi_kwqe_conn_destroy conn_cleanup; | |
701 | ||
702 | memset(&conn_cleanup, 0x00, sizeof(struct iscsi_kwqe_conn_destroy)); | |
703 | ||
704 | conn_cleanup.hdr.op_code = ISCSI_KWQE_OPCODE_DESTROY_CONN; | |
705 | conn_cleanup.hdr.flags = | |
706 | (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); | |
707 | /* 5771x requires conn context id to be passed as is */ | |
708 | if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) | |
709 | conn_cleanup.context_id = ep->ep_cid; | |
710 | else | |
711 | conn_cleanup.context_id = (ep->ep_cid >> 7); | |
712 | ||
713 | conn_cleanup.reserved0 = (u16)ep->ep_iscsi_cid; | |
714 | ||
715 | kwqe_arr[0] = (struct kwqe *) &conn_cleanup; | |
716 | if (hba->cnic && hba->cnic->submit_kwqes) | |
717 | hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 1); | |
718 | } | |
719 | ||
720 | ||
721 | /** | |
722 | * bnx2i_570x_send_conn_ofld_req - initiates iscsi conn context setup process | |
723 | * @hba: adapter structure pointer | |
724 | * @ep: endpoint (transport indentifier) structure | |
725 | * | |
726 | * 5706/5708/5709 specific - prepares and posts CONN_OFLD_REQ1/2 KWQE | |
727 | */ | |
728 | static void bnx2i_570x_send_conn_ofld_req(struct bnx2i_hba *hba, | |
729 | struct bnx2i_endpoint *ep) | |
730 | { | |
731 | struct kwqe *kwqe_arr[2]; | |
732 | struct iscsi_kwqe_conn_offload1 ofld_req1; | |
733 | struct iscsi_kwqe_conn_offload2 ofld_req2; | |
734 | dma_addr_t dma_addr; | |
735 | int num_kwqes = 2; | |
736 | u32 *ptbl; | |
737 | ||
738 | ofld_req1.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN1; | |
739 | ofld_req1.hdr.flags = | |
740 | (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); | |
741 | ||
742 | ofld_req1.iscsi_conn_id = (u16) ep->ep_iscsi_cid; | |
743 | ||
744 | dma_addr = ep->qp.sq_pgtbl_phys; | |
745 | ofld_req1.sq_page_table_addr_lo = (u32) dma_addr; | |
746 | ofld_req1.sq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); | |
747 | ||
748 | dma_addr = ep->qp.cq_pgtbl_phys; | |
749 | ofld_req1.cq_page_table_addr_lo = (u32) dma_addr; | |
750 | ofld_req1.cq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); | |
751 | ||
752 | ofld_req2.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN2; | |
753 | ofld_req2.hdr.flags = | |
754 | (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); | |
755 | ||
756 | dma_addr = ep->qp.rq_pgtbl_phys; | |
757 | ofld_req2.rq_page_table_addr_lo = (u32) dma_addr; | |
758 | ofld_req2.rq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); | |
759 | ||
760 | ptbl = (u32 *) ep->qp.sq_pgtbl_virt; | |
761 | ||
762 | ofld_req2.sq_first_pte.hi = *ptbl++; | |
763 | ofld_req2.sq_first_pte.lo = *ptbl; | |
764 | ||
765 | ptbl = (u32 *) ep->qp.cq_pgtbl_virt; | |
766 | ofld_req2.cq_first_pte.hi = *ptbl++; | |
767 | ofld_req2.cq_first_pte.lo = *ptbl; | |
768 | ||
769 | kwqe_arr[0] = (struct kwqe *) &ofld_req1; | |
770 | kwqe_arr[1] = (struct kwqe *) &ofld_req2; | |
771 | ofld_req2.num_additional_wqes = 0; | |
772 | ||
773 | if (hba->cnic && hba->cnic->submit_kwqes) | |
774 | hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes); | |
775 | } | |
776 | ||
777 | ||
778 | /** | |
779 | * bnx2i_5771x_send_conn_ofld_req - initiates iscsi connection context creation | |
780 | * @hba: adapter structure pointer | |
781 | * @ep: endpoint (transport indentifier) structure | |
782 | * | |
783 | * 57710 specific - prepares and posts CONN_OFLD_REQ1/2 KWQE | |
784 | */ | |
785 | static void bnx2i_5771x_send_conn_ofld_req(struct bnx2i_hba *hba, | |
786 | struct bnx2i_endpoint *ep) | |
787 | { | |
788 | struct kwqe *kwqe_arr[5]; | |
789 | struct iscsi_kwqe_conn_offload1 ofld_req1; | |
790 | struct iscsi_kwqe_conn_offload2 ofld_req2; | |
791 | struct iscsi_kwqe_conn_offload3 ofld_req3[1]; | |
792 | dma_addr_t dma_addr; | |
793 | int num_kwqes = 2; | |
794 | u32 *ptbl; | |
795 | ||
796 | ofld_req1.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN1; | |
797 | ofld_req1.hdr.flags = | |
798 | (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); | |
799 | ||
800 | ofld_req1.iscsi_conn_id = (u16) ep->ep_iscsi_cid; | |
801 | ||
802 | dma_addr = ep->qp.sq_pgtbl_phys + ISCSI_SQ_DB_SIZE; | |
803 | ofld_req1.sq_page_table_addr_lo = (u32) dma_addr; | |
804 | ofld_req1.sq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); | |
805 | ||
806 | dma_addr = ep->qp.cq_pgtbl_phys + ISCSI_CQ_DB_SIZE; | |
807 | ofld_req1.cq_page_table_addr_lo = (u32) dma_addr; | |
808 | ofld_req1.cq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); | |
809 | ||
810 | ofld_req2.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN2; | |
811 | ofld_req2.hdr.flags = | |
812 | (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); | |
813 | ||
814 | dma_addr = ep->qp.rq_pgtbl_phys + ISCSI_RQ_DB_SIZE; | |
815 | ofld_req2.rq_page_table_addr_lo = (u32) dma_addr; | |
816 | ofld_req2.rq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); | |
817 | ||
818 | ptbl = (u32 *)((u8 *)ep->qp.sq_pgtbl_virt + ISCSI_SQ_DB_SIZE); | |
819 | ofld_req2.sq_first_pte.hi = *ptbl++; | |
820 | ofld_req2.sq_first_pte.lo = *ptbl; | |
821 | ||
822 | ptbl = (u32 *)((u8 *)ep->qp.cq_pgtbl_virt + ISCSI_CQ_DB_SIZE); | |
823 | ofld_req2.cq_first_pte.hi = *ptbl++; | |
824 | ofld_req2.cq_first_pte.lo = *ptbl; | |
825 | ||
826 | kwqe_arr[0] = (struct kwqe *) &ofld_req1; | |
827 | kwqe_arr[1] = (struct kwqe *) &ofld_req2; | |
828 | ||
829 | ofld_req2.num_additional_wqes = 1; | |
830 | memset(ofld_req3, 0x00, sizeof(ofld_req3[0])); | |
831 | ptbl = (u32 *)((u8 *)ep->qp.rq_pgtbl_virt + ISCSI_RQ_DB_SIZE); | |
832 | ofld_req3[0].qp_first_pte[0].hi = *ptbl++; | |
833 | ofld_req3[0].qp_first_pte[0].lo = *ptbl; | |
834 | ||
835 | kwqe_arr[2] = (struct kwqe *) ofld_req3; | |
836 | /* need if we decide to go with multiple KCQE's per conn */ | |
837 | num_kwqes += 1; | |
838 | ||
839 | if (hba->cnic && hba->cnic->submit_kwqes) | |
840 | hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes); | |
841 | } | |
842 | ||
843 | /** | |
844 | * bnx2i_send_conn_ofld_req - initiates iscsi connection context setup process | |
845 | * | |
846 | * @hba: adapter structure pointer | |
847 | * @ep: endpoint (transport indentifier) structure | |
848 | * | |
849 | * this routine prepares and posts CONN_OFLD_REQ1/2 KWQE | |
850 | */ | |
851 | void bnx2i_send_conn_ofld_req(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) | |
852 | { | |
853 | if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type)) | |
854 | bnx2i_5771x_send_conn_ofld_req(hba, ep); | |
855 | else | |
856 | bnx2i_570x_send_conn_ofld_req(hba, ep); | |
857 | } | |
858 | ||
859 | ||
860 | /** | |
861 | * setup_qp_page_tables - iscsi QP page table setup function | |
862 | * @ep: endpoint (transport indentifier) structure | |
863 | * | |
864 | * Sets up page tables for SQ/RQ/CQ, 1G/sec (5706/5708/5709) devices requires | |
865 | * 64-bit address in big endian format. Whereas 10G/sec (57710) requires | |
866 | * PT in little endian format | |
867 | */ | |
868 | static void setup_qp_page_tables(struct bnx2i_endpoint *ep) | |
869 | { | |
870 | int num_pages; | |
871 | u32 *ptbl; | |
872 | dma_addr_t page; | |
873 | int cnic_dev_10g; | |
874 | ||
875 | if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) | |
876 | cnic_dev_10g = 1; | |
877 | else | |
878 | cnic_dev_10g = 0; | |
879 | ||
880 | /* SQ page table */ | |
881 | memset(ep->qp.sq_pgtbl_virt, 0, ep->qp.sq_pgtbl_size); | |
882 | num_pages = ep->qp.sq_mem_size / PAGE_SIZE; | |
883 | page = ep->qp.sq_phys; | |
884 | ||
885 | if (cnic_dev_10g) | |
886 | ptbl = (u32 *)((u8 *)ep->qp.sq_pgtbl_virt + ISCSI_SQ_DB_SIZE); | |
887 | else | |
888 | ptbl = (u32 *) ep->qp.sq_pgtbl_virt; | |
889 | while (num_pages--) { | |
890 | if (cnic_dev_10g) { | |
891 | /* PTE is written in little endian format for 57710 */ | |
892 | *ptbl = (u32) page; | |
893 | ptbl++; | |
894 | *ptbl = (u32) ((u64) page >> 32); | |
895 | ptbl++; | |
896 | page += PAGE_SIZE; | |
897 | } else { | |
898 | /* PTE is written in big endian format for | |
899 | * 5706/5708/5709 devices */ | |
900 | *ptbl = (u32) ((u64) page >> 32); | |
901 | ptbl++; | |
902 | *ptbl = (u32) page; | |
903 | ptbl++; | |
904 | page += PAGE_SIZE; | |
905 | } | |
906 | } | |
907 | ||
908 | /* RQ page table */ | |
909 | memset(ep->qp.rq_pgtbl_virt, 0, ep->qp.rq_pgtbl_size); | |
910 | num_pages = ep->qp.rq_mem_size / PAGE_SIZE; | |
911 | page = ep->qp.rq_phys; | |
912 | ||
913 | if (cnic_dev_10g) | |
914 | ptbl = (u32 *)((u8 *)ep->qp.rq_pgtbl_virt + ISCSI_RQ_DB_SIZE); | |
915 | else | |
916 | ptbl = (u32 *) ep->qp.rq_pgtbl_virt; | |
917 | while (num_pages--) { | |
918 | if (cnic_dev_10g) { | |
919 | /* PTE is written in little endian format for 57710 */ | |
920 | *ptbl = (u32) page; | |
921 | ptbl++; | |
922 | *ptbl = (u32) ((u64) page >> 32); | |
923 | ptbl++; | |
924 | page += PAGE_SIZE; | |
925 | } else { | |
926 | /* PTE is written in big endian format for | |
927 | * 5706/5708/5709 devices */ | |
928 | *ptbl = (u32) ((u64) page >> 32); | |
929 | ptbl++; | |
930 | *ptbl = (u32) page; | |
931 | ptbl++; | |
932 | page += PAGE_SIZE; | |
933 | } | |
934 | } | |
935 | ||
936 | /* CQ page table */ | |
937 | memset(ep->qp.cq_pgtbl_virt, 0, ep->qp.cq_pgtbl_size); | |
938 | num_pages = ep->qp.cq_mem_size / PAGE_SIZE; | |
939 | page = ep->qp.cq_phys; | |
940 | ||
941 | if (cnic_dev_10g) | |
942 | ptbl = (u32 *)((u8 *)ep->qp.cq_pgtbl_virt + ISCSI_CQ_DB_SIZE); | |
943 | else | |
944 | ptbl = (u32 *) ep->qp.cq_pgtbl_virt; | |
945 | while (num_pages--) { | |
946 | if (cnic_dev_10g) { | |
947 | /* PTE is written in little endian format for 57710 */ | |
948 | *ptbl = (u32) page; | |
949 | ptbl++; | |
950 | *ptbl = (u32) ((u64) page >> 32); | |
951 | ptbl++; | |
952 | page += PAGE_SIZE; | |
953 | } else { | |
954 | /* PTE is written in big endian format for | |
955 | * 5706/5708/5709 devices */ | |
956 | *ptbl = (u32) ((u64) page >> 32); | |
957 | ptbl++; | |
958 | *ptbl = (u32) page; | |
959 | ptbl++; | |
960 | page += PAGE_SIZE; | |
961 | } | |
962 | } | |
963 | } | |
964 | ||
965 | ||
966 | /** | |
967 | * bnx2i_alloc_qp_resc - allocates required resources for QP. | |
968 | * @hba: adapter structure pointer | |
969 | * @ep: endpoint (transport indentifier) structure | |
970 | * | |
971 | * Allocate QP (transport layer for iSCSI connection) resources, DMA'able | |
972 | * memory for SQ/RQ/CQ and page tables. EP structure elements such | |
973 | * as producer/consumer indexes/pointers, queue sizes and page table | |
974 | * contents are setup | |
975 | */ | |
976 | int bnx2i_alloc_qp_resc(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) | |
977 | { | |
978 | struct bnx2i_5771x_cq_db *cq_db; | |
979 | ||
980 | ep->hba = hba; | |
981 | ep->conn = NULL; | |
982 | ep->ep_cid = ep->ep_iscsi_cid = ep->ep_pg_cid = 0; | |
983 | ||
984 | /* Allocate page table memory for SQ which is page aligned */ | |
985 | ep->qp.sq_mem_size = hba->max_sqes * BNX2I_SQ_WQE_SIZE; | |
986 | ep->qp.sq_mem_size = | |
987 | (ep->qp.sq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; | |
988 | ep->qp.sq_pgtbl_size = | |
989 | (ep->qp.sq_mem_size / PAGE_SIZE) * sizeof(void *); | |
990 | ep->qp.sq_pgtbl_size = | |
991 | (ep->qp.sq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK; | |
992 | ||
993 | ep->qp.sq_pgtbl_virt = | |
994 | dma_alloc_coherent(&hba->pcidev->dev, ep->qp.sq_pgtbl_size, | |
995 | &ep->qp.sq_pgtbl_phys, GFP_KERNEL); | |
996 | if (!ep->qp.sq_pgtbl_virt) { | |
997 | printk(KERN_ALERT "bnx2i: unable to alloc SQ PT mem (%d)\n", | |
998 | ep->qp.sq_pgtbl_size); | |
999 | goto mem_alloc_err; | |
1000 | } | |
1001 | ||
1002 | /* Allocate memory area for actual SQ element */ | |
1003 | ep->qp.sq_virt = | |
1004 | dma_alloc_coherent(&hba->pcidev->dev, ep->qp.sq_mem_size, | |
1005 | &ep->qp.sq_phys, GFP_KERNEL); | |
1006 | if (!ep->qp.sq_virt) { | |
1007 | printk(KERN_ALERT "bnx2i: unable to alloc SQ BD memory %d\n", | |
1008 | ep->qp.sq_mem_size); | |
1009 | goto mem_alloc_err; | |
1010 | } | |
1011 | ||
1012 | memset(ep->qp.sq_virt, 0x00, ep->qp.sq_mem_size); | |
1013 | ep->qp.sq_first_qe = ep->qp.sq_virt; | |
1014 | ep->qp.sq_prod_qe = ep->qp.sq_first_qe; | |
1015 | ep->qp.sq_cons_qe = ep->qp.sq_first_qe; | |
1016 | ep->qp.sq_last_qe = &ep->qp.sq_first_qe[hba->max_sqes - 1]; | |
1017 | ep->qp.sq_prod_idx = 0; | |
1018 | ep->qp.sq_cons_idx = 0; | |
1019 | ep->qp.sqe_left = hba->max_sqes; | |
1020 | ||
1021 | /* Allocate page table memory for CQ which is page aligned */ | |
1022 | ep->qp.cq_mem_size = hba->max_cqes * BNX2I_CQE_SIZE; | |
1023 | ep->qp.cq_mem_size = | |
1024 | (ep->qp.cq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; | |
1025 | ep->qp.cq_pgtbl_size = | |
1026 | (ep->qp.cq_mem_size / PAGE_SIZE) * sizeof(void *); | |
1027 | ep->qp.cq_pgtbl_size = | |
1028 | (ep->qp.cq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK; | |
1029 | ||
1030 | ep->qp.cq_pgtbl_virt = | |
1031 | dma_alloc_coherent(&hba->pcidev->dev, ep->qp.cq_pgtbl_size, | |
1032 | &ep->qp.cq_pgtbl_phys, GFP_KERNEL); | |
1033 | if (!ep->qp.cq_pgtbl_virt) { | |
1034 | printk(KERN_ALERT "bnx2i: unable to alloc CQ PT memory %d\n", | |
1035 | ep->qp.cq_pgtbl_size); | |
1036 | goto mem_alloc_err; | |
1037 | } | |
1038 | ||
1039 | /* Allocate memory area for actual CQ element */ | |
1040 | ep->qp.cq_virt = | |
1041 | dma_alloc_coherent(&hba->pcidev->dev, ep->qp.cq_mem_size, | |
1042 | &ep->qp.cq_phys, GFP_KERNEL); | |
1043 | if (!ep->qp.cq_virt) { | |
1044 | printk(KERN_ALERT "bnx2i: unable to alloc CQ BD memory %d\n", | |
1045 | ep->qp.cq_mem_size); | |
1046 | goto mem_alloc_err; | |
1047 | } | |
1048 | memset(ep->qp.cq_virt, 0x00, ep->qp.cq_mem_size); | |
1049 | ||
1050 | ep->qp.cq_first_qe = ep->qp.cq_virt; | |
1051 | ep->qp.cq_prod_qe = ep->qp.cq_first_qe; | |
1052 | ep->qp.cq_cons_qe = ep->qp.cq_first_qe; | |
1053 | ep->qp.cq_last_qe = &ep->qp.cq_first_qe[hba->max_cqes - 1]; | |
1054 | ep->qp.cq_prod_idx = 0; | |
1055 | ep->qp.cq_cons_idx = 0; | |
1056 | ep->qp.cqe_left = hba->max_cqes; | |
1057 | ep->qp.cqe_exp_seq_sn = ISCSI_INITIAL_SN; | |
1058 | ep->qp.cqe_size = hba->max_cqes; | |
1059 | ||
1060 | /* Invalidate all EQ CQE index, req only for 57710 */ | |
1061 | cq_db = (struct bnx2i_5771x_cq_db *) ep->qp.cq_pgtbl_virt; | |
1062 | memset(cq_db->sqn, 0xFF, sizeof(cq_db->sqn[0]) * BNX2X_MAX_CQS); | |
1063 | ||
1064 | /* Allocate page table memory for RQ which is page aligned */ | |
1065 | ep->qp.rq_mem_size = hba->max_rqes * BNX2I_RQ_WQE_SIZE; | |
1066 | ep->qp.rq_mem_size = | |
1067 | (ep->qp.rq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; | |
1068 | ep->qp.rq_pgtbl_size = | |
1069 | (ep->qp.rq_mem_size / PAGE_SIZE) * sizeof(void *); | |
1070 | ep->qp.rq_pgtbl_size = | |
1071 | (ep->qp.rq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK; | |
1072 | ||
1073 | ep->qp.rq_pgtbl_virt = | |
1074 | dma_alloc_coherent(&hba->pcidev->dev, ep->qp.rq_pgtbl_size, | |
1075 | &ep->qp.rq_pgtbl_phys, GFP_KERNEL); | |
1076 | if (!ep->qp.rq_pgtbl_virt) { | |
1077 | printk(KERN_ALERT "bnx2i: unable to alloc RQ PT mem %d\n", | |
1078 | ep->qp.rq_pgtbl_size); | |
1079 | goto mem_alloc_err; | |
1080 | } | |
1081 | ||
1082 | /* Allocate memory area for actual RQ element */ | |
1083 | ep->qp.rq_virt = | |
1084 | dma_alloc_coherent(&hba->pcidev->dev, ep->qp.rq_mem_size, | |
1085 | &ep->qp.rq_phys, GFP_KERNEL); | |
1086 | if (!ep->qp.rq_virt) { | |
1087 | printk(KERN_ALERT "bnx2i: unable to alloc RQ BD memory %d\n", | |
1088 | ep->qp.rq_mem_size); | |
1089 | goto mem_alloc_err; | |
1090 | } | |
1091 | ||
1092 | ep->qp.rq_first_qe = ep->qp.rq_virt; | |
1093 | ep->qp.rq_prod_qe = ep->qp.rq_first_qe; | |
1094 | ep->qp.rq_cons_qe = ep->qp.rq_first_qe; | |
1095 | ep->qp.rq_last_qe = &ep->qp.rq_first_qe[hba->max_rqes - 1]; | |
1096 | ep->qp.rq_prod_idx = 0x8000; | |
1097 | ep->qp.rq_cons_idx = 0; | |
1098 | ep->qp.rqe_left = hba->max_rqes; | |
1099 | ||
1100 | setup_qp_page_tables(ep); | |
1101 | ||
1102 | return 0; | |
1103 | ||
1104 | mem_alloc_err: | |
1105 | bnx2i_free_qp_resc(hba, ep); | |
1106 | return -ENOMEM; | |
1107 | } | |
1108 | ||
1109 | ||
1110 | ||
1111 | /** | |
1112 | * bnx2i_free_qp_resc - free memory resources held by QP | |
1113 | * @hba: adapter structure pointer | |
1114 | * @ep: endpoint (transport indentifier) structure | |
1115 | * | |
1116 | * Free QP resources - SQ/RQ/CQ memory and page tables. | |
1117 | */ | |
1118 | void bnx2i_free_qp_resc(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) | |
1119 | { | |
1120 | if (ep->qp.ctx_base) { | |
1121 | iounmap(ep->qp.ctx_base); | |
1122 | ep->qp.ctx_base = NULL; | |
1123 | } | |
1124 | /* Free SQ mem */ | |
1125 | if (ep->qp.sq_pgtbl_virt) { | |
1126 | dma_free_coherent(&hba->pcidev->dev, ep->qp.sq_pgtbl_size, | |
1127 | ep->qp.sq_pgtbl_virt, ep->qp.sq_pgtbl_phys); | |
1128 | ep->qp.sq_pgtbl_virt = NULL; | |
1129 | ep->qp.sq_pgtbl_phys = 0; | |
1130 | } | |
1131 | if (ep->qp.sq_virt) { | |
1132 | dma_free_coherent(&hba->pcidev->dev, ep->qp.sq_mem_size, | |
1133 | ep->qp.sq_virt, ep->qp.sq_phys); | |
1134 | ep->qp.sq_virt = NULL; | |
1135 | ep->qp.sq_phys = 0; | |
1136 | } | |
1137 | ||
1138 | /* Free RQ mem */ | |
1139 | if (ep->qp.rq_pgtbl_virt) { | |
1140 | dma_free_coherent(&hba->pcidev->dev, ep->qp.rq_pgtbl_size, | |
1141 | ep->qp.rq_pgtbl_virt, ep->qp.rq_pgtbl_phys); | |
1142 | ep->qp.rq_pgtbl_virt = NULL; | |
1143 | ep->qp.rq_pgtbl_phys = 0; | |
1144 | } | |
1145 | if (ep->qp.rq_virt) { | |
1146 | dma_free_coherent(&hba->pcidev->dev, ep->qp.rq_mem_size, | |
1147 | ep->qp.rq_virt, ep->qp.rq_phys); | |
1148 | ep->qp.rq_virt = NULL; | |
1149 | ep->qp.rq_phys = 0; | |
1150 | } | |
1151 | ||
1152 | /* Free CQ mem */ | |
1153 | if (ep->qp.cq_pgtbl_virt) { | |
1154 | dma_free_coherent(&hba->pcidev->dev, ep->qp.cq_pgtbl_size, | |
1155 | ep->qp.cq_pgtbl_virt, ep->qp.cq_pgtbl_phys); | |
1156 | ep->qp.cq_pgtbl_virt = NULL; | |
1157 | ep->qp.cq_pgtbl_phys = 0; | |
1158 | } | |
1159 | if (ep->qp.cq_virt) { | |
1160 | dma_free_coherent(&hba->pcidev->dev, ep->qp.cq_mem_size, | |
1161 | ep->qp.cq_virt, ep->qp.cq_phys); | |
1162 | ep->qp.cq_virt = NULL; | |
1163 | ep->qp.cq_phys = 0; | |
1164 | } | |
1165 | } | |
1166 | ||
1167 | ||
1168 | /** | |
1169 | * bnx2i_send_fw_iscsi_init_msg - initiates initial handshake with iscsi f/w | |
1170 | * @hba: adapter structure pointer | |
1171 | * | |
1172 | * Send down iscsi_init KWQEs which initiates the initial handshake with the f/w | |
1173 | * This results in iSCSi support validation and on-chip context manager | |
1174 | * initialization. Firmware completes this handshake with a CQE carrying | |
1175 | * the result of iscsi support validation. Parameter carried by | |
1176 | * iscsi init request determines the number of offloaded connection and | |
1177 | * tolerance level for iscsi protocol violation this hba/chip can support | |
1178 | */ | |
1179 | int bnx2i_send_fw_iscsi_init_msg(struct bnx2i_hba *hba) | |
1180 | { | |
1181 | struct kwqe *kwqe_arr[3]; | |
1182 | struct iscsi_kwqe_init1 iscsi_init; | |
1183 | struct iscsi_kwqe_init2 iscsi_init2; | |
1184 | int rc = 0; | |
1185 | u64 mask64; | |
1186 | ||
1187 | bnx2i_adjust_qp_size(hba); | |
1188 | ||
1189 | iscsi_init.flags = | |
1190 | ISCSI_PAGE_SIZE_4K << ISCSI_KWQE_INIT1_PAGE_SIZE_SHIFT; | |
1191 | if (en_tcp_dack) | |
1192 | iscsi_init.flags |= ISCSI_KWQE_INIT1_DELAYED_ACK_ENABLE; | |
1193 | iscsi_init.reserved0 = 0; | |
1194 | iscsi_init.num_cqs = 1; | |
1195 | iscsi_init.hdr.op_code = ISCSI_KWQE_OPCODE_INIT1; | |
1196 | iscsi_init.hdr.flags = | |
1197 | (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); | |
1198 | ||
1199 | iscsi_init.dummy_buffer_addr_lo = (u32) hba->dummy_buf_dma; | |
1200 | iscsi_init.dummy_buffer_addr_hi = | |
1201 | (u32) ((u64) hba->dummy_buf_dma >> 32); | |
1202 | ||
1203 | hba->ctx_ccell_tasks = | |
1204 | ((hba->num_ccell & 0xFFFF) | (hba->max_sqes << 16)); | |
1205 | iscsi_init.num_ccells_per_conn = hba->num_ccell; | |
1206 | iscsi_init.num_tasks_per_conn = hba->max_sqes; | |
1207 | iscsi_init.sq_wqes_per_page = PAGE_SIZE / BNX2I_SQ_WQE_SIZE; | |
1208 | iscsi_init.sq_num_wqes = hba->max_sqes; | |
1209 | iscsi_init.cq_log_wqes_per_page = | |
1210 | (u8) bnx2i_power_of2(PAGE_SIZE / BNX2I_CQE_SIZE); | |
1211 | iscsi_init.cq_num_wqes = hba->max_cqes; | |
1212 | iscsi_init.cq_num_pages = (hba->max_cqes * BNX2I_CQE_SIZE + | |
1213 | (PAGE_SIZE - 1)) / PAGE_SIZE; | |
1214 | iscsi_init.sq_num_pages = (hba->max_sqes * BNX2I_SQ_WQE_SIZE + | |
1215 | (PAGE_SIZE - 1)) / PAGE_SIZE; | |
1216 | iscsi_init.rq_buffer_size = BNX2I_RQ_WQE_SIZE; | |
1217 | iscsi_init.rq_num_wqes = hba->max_rqes; | |
1218 | ||
1219 | ||
1220 | iscsi_init2.hdr.op_code = ISCSI_KWQE_OPCODE_INIT2; | |
1221 | iscsi_init2.hdr.flags = | |
1222 | (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); | |
1223 | iscsi_init2.max_cq_sqn = hba->max_cqes * 2 + 1; | |
1224 | mask64 = 0x0ULL; | |
1225 | mask64 |= ( | |
1226 | /* CISCO MDS */ | |
1227 | (1UL << | |
1228 | ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_NOT_RSRV) | | |
1229 | /* HP MSA1510i */ | |
1230 | (1UL << | |
1231 | ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_EXP_DATASN) | | |
1232 | /* EMC */ | |
1233 | (1ULL << ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_LUN)); | |
1234 | if (error_mask1) | |
1235 | iscsi_init2.error_bit_map[0] = error_mask1; | |
1236 | else | |
1237 | iscsi_init2.error_bit_map[0] = (u32) mask64; | |
1238 | ||
1239 | if (error_mask2) | |
1240 | iscsi_init2.error_bit_map[1] = error_mask2; | |
1241 | else | |
1242 | iscsi_init2.error_bit_map[1] = (u32) (mask64 >> 32); | |
1243 | ||
1244 | iscsi_error_mask = mask64; | |
1245 | ||
1246 | kwqe_arr[0] = (struct kwqe *) &iscsi_init; | |
1247 | kwqe_arr[1] = (struct kwqe *) &iscsi_init2; | |
1248 | ||
1249 | if (hba->cnic && hba->cnic->submit_kwqes) | |
1250 | rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 2); | |
1251 | return rc; | |
1252 | } | |
1253 | ||
1254 | ||
1255 | /** | |
1256 | * bnx2i_process_scsi_cmd_resp - this function handles scsi cmd completion. | |
1257 | * @conn: iscsi connection | |
1258 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1259 | * | |
1260 | * process SCSI CMD Response CQE & complete the request to SCSI-ML | |
1261 | */ | |
1262 | static int bnx2i_process_scsi_cmd_resp(struct iscsi_session *session, | |
1263 | struct bnx2i_conn *bnx2i_conn, | |
1264 | struct cqe *cqe) | |
1265 | { | |
1266 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1267 | struct bnx2i_cmd_response *resp_cqe; | |
1268 | struct bnx2i_cmd *bnx2i_cmd; | |
1269 | struct iscsi_task *task; | |
1270 | struct iscsi_cmd_rsp *hdr; | |
1271 | u32 datalen = 0; | |
1272 | ||
1273 | resp_cqe = (struct bnx2i_cmd_response *)cqe; | |
1274 | spin_lock(&session->lock); | |
1275 | task = iscsi_itt_to_task(conn, | |
1276 | resp_cqe->itt & ISCSI_CMD_RESPONSE_INDEX); | |
1277 | if (!task) | |
1278 | goto fail; | |
1279 | ||
1280 | bnx2i_cmd = task->dd_data; | |
1281 | ||
1282 | if (bnx2i_cmd->req.op_attr & ISCSI_CMD_REQUEST_READ) { | |
1283 | conn->datain_pdus_cnt += | |
1284 | resp_cqe->task_stat.read_stat.num_data_outs; | |
1285 | conn->rxdata_octets += | |
1286 | bnx2i_cmd->req.total_data_transfer_length; | |
1287 | } else { | |
1288 | conn->dataout_pdus_cnt += | |
1289 | resp_cqe->task_stat.read_stat.num_data_outs; | |
1290 | conn->r2t_pdus_cnt += | |
1291 | resp_cqe->task_stat.read_stat.num_r2ts; | |
1292 | conn->txdata_octets += | |
1293 | bnx2i_cmd->req.total_data_transfer_length; | |
1294 | } | |
1295 | bnx2i_iscsi_unmap_sg_list(bnx2i_cmd); | |
1296 | ||
1297 | hdr = (struct iscsi_cmd_rsp *)task->hdr; | |
1298 | resp_cqe = (struct bnx2i_cmd_response *)cqe; | |
1299 | hdr->opcode = resp_cqe->op_code; | |
1300 | hdr->max_cmdsn = cpu_to_be32(resp_cqe->max_cmd_sn); | |
1301 | hdr->exp_cmdsn = cpu_to_be32(resp_cqe->exp_cmd_sn); | |
1302 | hdr->response = resp_cqe->response; | |
1303 | hdr->cmd_status = resp_cqe->status; | |
1304 | hdr->flags = resp_cqe->response_flags; | |
1305 | hdr->residual_count = cpu_to_be32(resp_cqe->residual_count); | |
1306 | ||
1307 | if (resp_cqe->op_code == ISCSI_OP_SCSI_DATA_IN) | |
1308 | goto done; | |
1309 | ||
1310 | if (resp_cqe->status == SAM_STAT_CHECK_CONDITION) { | |
1311 | datalen = resp_cqe->data_length; | |
1312 | if (datalen < 2) | |
1313 | goto done; | |
1314 | ||
1315 | if (datalen > BNX2I_RQ_WQE_SIZE) { | |
1316 | iscsi_conn_printk(KERN_ERR, conn, | |
1317 | "sense data len %d > RQ sz\n", | |
1318 | datalen); | |
1319 | datalen = BNX2I_RQ_WQE_SIZE; | |
1320 | } else if (datalen > ISCSI_DEF_MAX_RECV_SEG_LEN) { | |
1321 | iscsi_conn_printk(KERN_ERR, conn, | |
1322 | "sense data len %d > conn data\n", | |
1323 | datalen); | |
1324 | datalen = ISCSI_DEF_MAX_RECV_SEG_LEN; | |
1325 | } | |
1326 | ||
1327 | bnx2i_get_rq_buf(bnx2i_cmd->conn, conn->data, datalen); | |
1328 | bnx2i_put_rq_buf(bnx2i_cmd->conn, 1); | |
1329 | } | |
1330 | ||
1331 | done: | |
1332 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, | |
1333 | conn->data, datalen); | |
1334 | fail: | |
1335 | spin_unlock(&session->lock); | |
1336 | return 0; | |
1337 | } | |
1338 | ||
1339 | ||
1340 | /** | |
1341 | * bnx2i_process_login_resp - this function handles iscsi login response | |
1342 | * @session: iscsi session pointer | |
1343 | * @bnx2i_conn: iscsi connection pointer | |
1344 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1345 | * | |
1346 | * process Login Response CQE & complete it to open-iscsi user daemon | |
1347 | */ | |
1348 | static int bnx2i_process_login_resp(struct iscsi_session *session, | |
1349 | struct bnx2i_conn *bnx2i_conn, | |
1350 | struct cqe *cqe) | |
1351 | { | |
1352 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1353 | struct iscsi_task *task; | |
1354 | struct bnx2i_login_response *login; | |
1355 | struct iscsi_login_rsp *resp_hdr; | |
1356 | int pld_len; | |
1357 | int pad_len; | |
1358 | ||
1359 | login = (struct bnx2i_login_response *) cqe; | |
1360 | spin_lock(&session->lock); | |
1361 | task = iscsi_itt_to_task(conn, | |
1362 | login->itt & ISCSI_LOGIN_RESPONSE_INDEX); | |
1363 | if (!task) | |
1364 | goto done; | |
1365 | ||
1366 | resp_hdr = (struct iscsi_login_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; | |
1367 | memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); | |
1368 | resp_hdr->opcode = login->op_code; | |
1369 | resp_hdr->flags = login->response_flags; | |
1370 | resp_hdr->max_version = login->version_max; | |
a419aef8 | 1371 | resp_hdr->active_version = login->version_active; |
cf4e6363 MC |
1372 | resp_hdr->hlength = 0; |
1373 | ||
1374 | hton24(resp_hdr->dlength, login->data_length); | |
1375 | memcpy(resp_hdr->isid, &login->isid_lo, 6); | |
1376 | resp_hdr->tsih = cpu_to_be16(login->tsih); | |
1377 | resp_hdr->itt = task->hdr->itt; | |
1378 | resp_hdr->statsn = cpu_to_be32(login->stat_sn); | |
1379 | resp_hdr->exp_cmdsn = cpu_to_be32(login->exp_cmd_sn); | |
1380 | resp_hdr->max_cmdsn = cpu_to_be32(login->max_cmd_sn); | |
1381 | resp_hdr->status_class = login->status_class; | |
1382 | resp_hdr->status_detail = login->status_detail; | |
1383 | pld_len = login->data_length; | |
1384 | bnx2i_conn->gen_pdu.resp_wr_ptr = | |
1385 | bnx2i_conn->gen_pdu.resp_buf + pld_len; | |
1386 | ||
1387 | pad_len = 0; | |
1388 | if (pld_len & 0x3) | |
1389 | pad_len = 4 - (pld_len % 4); | |
1390 | ||
1391 | if (pad_len) { | |
1392 | int i = 0; | |
1393 | for (i = 0; i < pad_len; i++) { | |
1394 | bnx2i_conn->gen_pdu.resp_wr_ptr[0] = 0; | |
1395 | bnx2i_conn->gen_pdu.resp_wr_ptr++; | |
1396 | } | |
1397 | } | |
1398 | ||
1399 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, | |
1400 | bnx2i_conn->gen_pdu.resp_buf, | |
1401 | bnx2i_conn->gen_pdu.resp_wr_ptr - bnx2i_conn->gen_pdu.resp_buf); | |
1402 | done: | |
1403 | spin_unlock(&session->lock); | |
1404 | return 0; | |
1405 | } | |
1406 | ||
1407 | /** | |
1408 | * bnx2i_process_tmf_resp - this function handles iscsi TMF response | |
1409 | * @session: iscsi session pointer | |
1410 | * @bnx2i_conn: iscsi connection pointer | |
1411 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1412 | * | |
1413 | * process iSCSI TMF Response CQE and wake up the driver eh thread. | |
1414 | */ | |
1415 | static int bnx2i_process_tmf_resp(struct iscsi_session *session, | |
1416 | struct bnx2i_conn *bnx2i_conn, | |
1417 | struct cqe *cqe) | |
1418 | { | |
1419 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1420 | struct iscsi_task *task; | |
1421 | struct bnx2i_tmf_response *tmf_cqe; | |
1422 | struct iscsi_tm_rsp *resp_hdr; | |
1423 | ||
1424 | tmf_cqe = (struct bnx2i_tmf_response *)cqe; | |
1425 | spin_lock(&session->lock); | |
1426 | task = iscsi_itt_to_task(conn, | |
1427 | tmf_cqe->itt & ISCSI_TMF_RESPONSE_INDEX); | |
1428 | if (!task) | |
1429 | goto done; | |
1430 | ||
1431 | resp_hdr = (struct iscsi_tm_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; | |
1432 | memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); | |
1433 | resp_hdr->opcode = tmf_cqe->op_code; | |
1434 | resp_hdr->max_cmdsn = cpu_to_be32(tmf_cqe->max_cmd_sn); | |
1435 | resp_hdr->exp_cmdsn = cpu_to_be32(tmf_cqe->exp_cmd_sn); | |
1436 | resp_hdr->itt = task->hdr->itt; | |
1437 | resp_hdr->response = tmf_cqe->response; | |
1438 | ||
1439 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0); | |
1440 | done: | |
1441 | spin_unlock(&session->lock); | |
1442 | return 0; | |
1443 | } | |
1444 | ||
1445 | /** | |
1446 | * bnx2i_process_logout_resp - this function handles iscsi logout response | |
1447 | * @session: iscsi session pointer | |
1448 | * @bnx2i_conn: iscsi connection pointer | |
1449 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1450 | * | |
1451 | * process iSCSI Logout Response CQE & make function call to | |
1452 | * notify the user daemon. | |
1453 | */ | |
1454 | static int bnx2i_process_logout_resp(struct iscsi_session *session, | |
1455 | struct bnx2i_conn *bnx2i_conn, | |
1456 | struct cqe *cqe) | |
1457 | { | |
1458 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1459 | struct iscsi_task *task; | |
1460 | struct bnx2i_logout_response *logout; | |
1461 | struct iscsi_logout_rsp *resp_hdr; | |
1462 | ||
1463 | logout = (struct bnx2i_logout_response *) cqe; | |
1464 | spin_lock(&session->lock); | |
1465 | task = iscsi_itt_to_task(conn, | |
1466 | logout->itt & ISCSI_LOGOUT_RESPONSE_INDEX); | |
1467 | if (!task) | |
1468 | goto done; | |
1469 | ||
1470 | resp_hdr = (struct iscsi_logout_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; | |
1471 | memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); | |
1472 | resp_hdr->opcode = logout->op_code; | |
1473 | resp_hdr->flags = logout->response; | |
1474 | resp_hdr->hlength = 0; | |
1475 | ||
1476 | resp_hdr->itt = task->hdr->itt; | |
1477 | resp_hdr->statsn = task->hdr->exp_statsn; | |
1478 | resp_hdr->exp_cmdsn = cpu_to_be32(logout->exp_cmd_sn); | |
1479 | resp_hdr->max_cmdsn = cpu_to_be32(logout->max_cmd_sn); | |
1480 | ||
1481 | resp_hdr->t2wait = cpu_to_be32(logout->time_to_wait); | |
1482 | resp_hdr->t2retain = cpu_to_be32(logout->time_to_retain); | |
1483 | ||
1484 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0); | |
1485 | done: | |
1486 | spin_unlock(&session->lock); | |
1487 | return 0; | |
1488 | } | |
1489 | ||
1490 | /** | |
1491 | * bnx2i_process_nopin_local_cmpl - this function handles iscsi nopin CQE | |
1492 | * @session: iscsi session pointer | |
1493 | * @bnx2i_conn: iscsi connection pointer | |
1494 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1495 | * | |
1496 | * process iSCSI NOPIN local completion CQE, frees IIT and command structures | |
1497 | */ | |
1498 | static void bnx2i_process_nopin_local_cmpl(struct iscsi_session *session, | |
1499 | struct bnx2i_conn *bnx2i_conn, | |
1500 | struct cqe *cqe) | |
1501 | { | |
1502 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1503 | struct bnx2i_nop_in_msg *nop_in; | |
1504 | struct iscsi_task *task; | |
1505 | ||
1506 | nop_in = (struct bnx2i_nop_in_msg *)cqe; | |
1507 | spin_lock(&session->lock); | |
1508 | task = iscsi_itt_to_task(conn, | |
1509 | nop_in->itt & ISCSI_NOP_IN_MSG_INDEX); | |
1510 | if (task) | |
1511 | iscsi_put_task(task); | |
1512 | spin_unlock(&session->lock); | |
1513 | } | |
1514 | ||
1515 | /** | |
1516 | * bnx2i_unsol_pdu_adjust_rq - makes adjustments to RQ after unsol pdu is recvd | |
1517 | * @conn: iscsi connection | |
1518 | * | |
1519 | * Firmware advances RQ producer index for every unsolicited PDU even if | |
1520 | * payload data length is '0'. This function makes corresponding | |
1521 | * adjustments on the driver side to match this f/w behavior | |
1522 | */ | |
1523 | static void bnx2i_unsol_pdu_adjust_rq(struct bnx2i_conn *bnx2i_conn) | |
1524 | { | |
1525 | char dummy_rq_data[2]; | |
1526 | bnx2i_get_rq_buf(bnx2i_conn, dummy_rq_data, 1); | |
1527 | bnx2i_put_rq_buf(bnx2i_conn, 1); | |
1528 | } | |
1529 | ||
1530 | ||
1531 | /** | |
1532 | * bnx2i_process_nopin_mesg - this function handles iscsi nopin CQE | |
1533 | * @session: iscsi session pointer | |
1534 | * @bnx2i_conn: iscsi connection pointer | |
1535 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1536 | * | |
1537 | * process iSCSI target's proactive iSCSI NOPIN request | |
1538 | */ | |
1539 | static int bnx2i_process_nopin_mesg(struct iscsi_session *session, | |
1540 | struct bnx2i_conn *bnx2i_conn, | |
1541 | struct cqe *cqe) | |
1542 | { | |
1543 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1544 | struct iscsi_task *task; | |
1545 | struct bnx2i_nop_in_msg *nop_in; | |
1546 | struct iscsi_nopin *hdr; | |
1547 | u32 itt; | |
1548 | int tgt_async_nop = 0; | |
1549 | ||
1550 | nop_in = (struct bnx2i_nop_in_msg *)cqe; | |
1551 | itt = nop_in->itt & ISCSI_NOP_IN_MSG_INDEX; | |
1552 | ||
1553 | spin_lock(&session->lock); | |
1554 | hdr = (struct iscsi_nopin *)&bnx2i_conn->gen_pdu.resp_hdr; | |
1555 | memset(hdr, 0, sizeof(struct iscsi_hdr)); | |
1556 | hdr->opcode = nop_in->op_code; | |
1557 | hdr->max_cmdsn = cpu_to_be32(nop_in->max_cmd_sn); | |
1558 | hdr->exp_cmdsn = cpu_to_be32(nop_in->exp_cmd_sn); | |
1559 | hdr->ttt = cpu_to_be32(nop_in->ttt); | |
1560 | ||
1561 | if (itt == (u16) RESERVED_ITT) { | |
1562 | bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); | |
1563 | hdr->itt = RESERVED_ITT; | |
1564 | tgt_async_nop = 1; | |
1565 | goto done; | |
1566 | } | |
1567 | ||
1568 | /* this is a response to one of our nop-outs */ | |
1569 | task = iscsi_itt_to_task(conn, itt); | |
1570 | if (task) { | |
1571 | hdr->flags = ISCSI_FLAG_CMD_FINAL; | |
1572 | hdr->itt = task->hdr->itt; | |
1573 | hdr->ttt = cpu_to_be32(nop_in->ttt); | |
1574 | memcpy(hdr->lun, nop_in->lun, 8); | |
1575 | } | |
1576 | done: | |
1577 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0); | |
1578 | spin_unlock(&session->lock); | |
1579 | ||
1580 | return tgt_async_nop; | |
1581 | } | |
1582 | ||
1583 | ||
1584 | /** | |
1585 | * bnx2i_process_async_mesg - this function handles iscsi async message | |
1586 | * @session: iscsi session pointer | |
1587 | * @bnx2i_conn: iscsi connection pointer | |
1588 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1589 | * | |
1590 | * process iSCSI ASYNC Message | |
1591 | */ | |
1592 | static void bnx2i_process_async_mesg(struct iscsi_session *session, | |
1593 | struct bnx2i_conn *bnx2i_conn, | |
1594 | struct cqe *cqe) | |
1595 | { | |
1596 | struct bnx2i_async_msg *async_cqe; | |
1597 | struct iscsi_async *resp_hdr; | |
1598 | u8 async_event; | |
1599 | ||
1600 | bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); | |
1601 | ||
1602 | async_cqe = (struct bnx2i_async_msg *)cqe; | |
1603 | async_event = async_cqe->async_event; | |
1604 | ||
1605 | if (async_event == ISCSI_ASYNC_MSG_SCSI_EVENT) { | |
1606 | iscsi_conn_printk(KERN_ALERT, bnx2i_conn->cls_conn->dd_data, | |
1607 | "async: scsi events not supported\n"); | |
1608 | return; | |
1609 | } | |
1610 | ||
1611 | spin_lock(&session->lock); | |
1612 | resp_hdr = (struct iscsi_async *) &bnx2i_conn->gen_pdu.resp_hdr; | |
1613 | memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); | |
1614 | resp_hdr->opcode = async_cqe->op_code; | |
1615 | resp_hdr->flags = 0x80; | |
1616 | ||
1617 | memcpy(resp_hdr->lun, async_cqe->lun, 8); | |
1618 | resp_hdr->exp_cmdsn = cpu_to_be32(async_cqe->exp_cmd_sn); | |
1619 | resp_hdr->max_cmdsn = cpu_to_be32(async_cqe->max_cmd_sn); | |
1620 | ||
1621 | resp_hdr->async_event = async_cqe->async_event; | |
1622 | resp_hdr->async_vcode = async_cqe->async_vcode; | |
1623 | ||
1624 | resp_hdr->param1 = cpu_to_be16(async_cqe->param1); | |
1625 | resp_hdr->param2 = cpu_to_be16(async_cqe->param2); | |
1626 | resp_hdr->param3 = cpu_to_be16(async_cqe->param3); | |
1627 | ||
1628 | __iscsi_complete_pdu(bnx2i_conn->cls_conn->dd_data, | |
1629 | (struct iscsi_hdr *)resp_hdr, NULL, 0); | |
1630 | spin_unlock(&session->lock); | |
1631 | } | |
1632 | ||
1633 | ||
1634 | /** | |
1635 | * bnx2i_process_reject_mesg - process iscsi reject pdu | |
1636 | * @session: iscsi session pointer | |
1637 | * @bnx2i_conn: iscsi connection pointer | |
1638 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1639 | * | |
1640 | * process iSCSI REJECT message | |
1641 | */ | |
1642 | static void bnx2i_process_reject_mesg(struct iscsi_session *session, | |
1643 | struct bnx2i_conn *bnx2i_conn, | |
1644 | struct cqe *cqe) | |
1645 | { | |
1646 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1647 | struct bnx2i_reject_msg *reject; | |
1648 | struct iscsi_reject *hdr; | |
1649 | ||
1650 | reject = (struct bnx2i_reject_msg *) cqe; | |
1651 | if (reject->data_length) { | |
1652 | bnx2i_get_rq_buf(bnx2i_conn, conn->data, reject->data_length); | |
1653 | bnx2i_put_rq_buf(bnx2i_conn, 1); | |
1654 | } else | |
1655 | bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); | |
1656 | ||
1657 | spin_lock(&session->lock); | |
1658 | hdr = (struct iscsi_reject *) &bnx2i_conn->gen_pdu.resp_hdr; | |
1659 | memset(hdr, 0, sizeof(struct iscsi_hdr)); | |
1660 | hdr->opcode = reject->op_code; | |
1661 | hdr->reason = reject->reason; | |
1662 | hton24(hdr->dlength, reject->data_length); | |
1663 | hdr->max_cmdsn = cpu_to_be32(reject->max_cmd_sn); | |
1664 | hdr->exp_cmdsn = cpu_to_be32(reject->exp_cmd_sn); | |
1665 | hdr->ffffffff = cpu_to_be32(RESERVED_ITT); | |
1666 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, conn->data, | |
1667 | reject->data_length); | |
1668 | spin_unlock(&session->lock); | |
1669 | } | |
1670 | ||
1671 | /** | |
1672 | * bnx2i_process_cmd_cleanup_resp - process scsi command clean-up completion | |
1673 | * @session: iscsi session pointer | |
1674 | * @bnx2i_conn: iscsi connection pointer | |
1675 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1676 | * | |
1677 | * process command cleanup response CQE during conn shutdown or error recovery | |
1678 | */ | |
1679 | static void bnx2i_process_cmd_cleanup_resp(struct iscsi_session *session, | |
1680 | struct bnx2i_conn *bnx2i_conn, | |
1681 | struct cqe *cqe) | |
1682 | { | |
1683 | struct bnx2i_cleanup_response *cmd_clean_rsp; | |
1684 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1685 | struct iscsi_task *task; | |
1686 | ||
1687 | cmd_clean_rsp = (struct bnx2i_cleanup_response *)cqe; | |
1688 | spin_lock(&session->lock); | |
1689 | task = iscsi_itt_to_task(conn, | |
1690 | cmd_clean_rsp->itt & ISCSI_CLEANUP_RESPONSE_INDEX); | |
1691 | if (!task) | |
1692 | printk(KERN_ALERT "bnx2i: cmd clean ITT %x not active\n", | |
1693 | cmd_clean_rsp->itt & ISCSI_CLEANUP_RESPONSE_INDEX); | |
1694 | spin_unlock(&session->lock); | |
1695 | complete(&bnx2i_conn->cmd_cleanup_cmpl); | |
1696 | } | |
1697 | ||
1698 | ||
1699 | ||
1700 | /** | |
1701 | * bnx2i_process_new_cqes - process newly DMA'ed CQE's | |
1702 | * @bnx2i_conn: iscsi connection | |
1703 | * | |
1704 | * this function is called by generic KCQ handler to process all pending CQE's | |
1705 | */ | |
1706 | static void bnx2i_process_new_cqes(struct bnx2i_conn *bnx2i_conn) | |
1707 | { | |
1708 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1709 | struct iscsi_session *session = conn->session; | |
1710 | struct qp_info *qp = &bnx2i_conn->ep->qp; | |
1711 | struct bnx2i_nop_in_msg *nopin; | |
1712 | int tgt_async_msg; | |
1713 | ||
1714 | while (1) { | |
1715 | nopin = (struct bnx2i_nop_in_msg *) qp->cq_cons_qe; | |
1716 | if (nopin->cq_req_sn != qp->cqe_exp_seq_sn) | |
1717 | break; | |
1718 | ||
1719 | if (unlikely(test_bit(ISCSI_SUSPEND_BIT, &conn->suspend_rx))) | |
1720 | break; | |
1721 | ||
1722 | tgt_async_msg = 0; | |
1723 | ||
1724 | switch (nopin->op_code) { | |
1725 | case ISCSI_OP_SCSI_CMD_RSP: | |
1726 | case ISCSI_OP_SCSI_DATA_IN: | |
1727 | bnx2i_process_scsi_cmd_resp(session, bnx2i_conn, | |
1728 | qp->cq_cons_qe); | |
1729 | break; | |
1730 | case ISCSI_OP_LOGIN_RSP: | |
1731 | bnx2i_process_login_resp(session, bnx2i_conn, | |
1732 | qp->cq_cons_qe); | |
1733 | break; | |
1734 | case ISCSI_OP_SCSI_TMFUNC_RSP: | |
1735 | bnx2i_process_tmf_resp(session, bnx2i_conn, | |
1736 | qp->cq_cons_qe); | |
1737 | break; | |
1738 | case ISCSI_OP_LOGOUT_RSP: | |
1739 | bnx2i_process_logout_resp(session, bnx2i_conn, | |
1740 | qp->cq_cons_qe); | |
1741 | break; | |
1742 | case ISCSI_OP_NOOP_IN: | |
1743 | if (bnx2i_process_nopin_mesg(session, bnx2i_conn, | |
1744 | qp->cq_cons_qe)) | |
1745 | tgt_async_msg = 1; | |
1746 | break; | |
1747 | case ISCSI_OPCODE_NOPOUT_LOCAL_COMPLETION: | |
1748 | bnx2i_process_nopin_local_cmpl(session, bnx2i_conn, | |
1749 | qp->cq_cons_qe); | |
1750 | break; | |
1751 | case ISCSI_OP_ASYNC_EVENT: | |
1752 | bnx2i_process_async_mesg(session, bnx2i_conn, | |
1753 | qp->cq_cons_qe); | |
1754 | tgt_async_msg = 1; | |
1755 | break; | |
1756 | case ISCSI_OP_REJECT: | |
1757 | bnx2i_process_reject_mesg(session, bnx2i_conn, | |
1758 | qp->cq_cons_qe); | |
1759 | break; | |
1760 | case ISCSI_OPCODE_CLEANUP_RESPONSE: | |
1761 | bnx2i_process_cmd_cleanup_resp(session, bnx2i_conn, | |
1762 | qp->cq_cons_qe); | |
1763 | break; | |
1764 | default: | |
1765 | printk(KERN_ALERT "bnx2i: unknown opcode 0x%x\n", | |
1766 | nopin->op_code); | |
1767 | } | |
1768 | ||
1769 | if (!tgt_async_msg) | |
1770 | bnx2i_conn->ep->num_active_cmds--; | |
1771 | ||
1772 | /* clear out in production version only, till beta keep opcode | |
1773 | * field intact, will be helpful in debugging (context dump) | |
1774 | * nopin->op_code = 0; | |
1775 | */ | |
1776 | qp->cqe_exp_seq_sn++; | |
1777 | if (qp->cqe_exp_seq_sn == (qp->cqe_size * 2 + 1)) | |
1778 | qp->cqe_exp_seq_sn = ISCSI_INITIAL_SN; | |
1779 | ||
1780 | if (qp->cq_cons_qe == qp->cq_last_qe) { | |
1781 | qp->cq_cons_qe = qp->cq_first_qe; | |
1782 | qp->cq_cons_idx = 0; | |
1783 | } else { | |
1784 | qp->cq_cons_qe++; | |
1785 | qp->cq_cons_idx++; | |
1786 | } | |
1787 | } | |
1788 | bnx2i_arm_cq_event_coalescing(bnx2i_conn->ep, CNIC_ARM_CQE); | |
1789 | } | |
1790 | ||
1791 | /** | |
1792 | * bnx2i_fastpath_notification - process global event queue (KCQ) | |
1793 | * @hba: adapter structure pointer | |
1794 | * @new_cqe_kcqe: pointer to newly DMA'ed KCQE entry | |
1795 | * | |
1796 | * Fast path event notification handler, KCQ entry carries context id | |
1797 | * of the connection that has 1 or more pending CQ entries | |
1798 | */ | |
1799 | static void bnx2i_fastpath_notification(struct bnx2i_hba *hba, | |
1800 | struct iscsi_kcqe *new_cqe_kcqe) | |
1801 | { | |
1802 | struct bnx2i_conn *conn; | |
1803 | u32 iscsi_cid; | |
1804 | ||
1805 | iscsi_cid = new_cqe_kcqe->iscsi_conn_id; | |
1806 | conn = bnx2i_get_conn_from_id(hba, iscsi_cid); | |
1807 | ||
1808 | if (!conn) { | |
1809 | printk(KERN_ALERT "cid #%x not valid\n", iscsi_cid); | |
1810 | return; | |
1811 | } | |
1812 | if (!conn->ep) { | |
1813 | printk(KERN_ALERT "cid #%x - ep not bound\n", iscsi_cid); | |
1814 | return; | |
1815 | } | |
1816 | ||
1817 | bnx2i_process_new_cqes(conn); | |
1818 | } | |
1819 | ||
1820 | ||
1821 | /** | |
1822 | * bnx2i_process_update_conn_cmpl - process iscsi conn update completion KCQE | |
1823 | * @hba: adapter structure pointer | |
1824 | * @update_kcqe: kcqe pointer | |
1825 | * | |
1826 | * CONN_UPDATE completion handler, this completes iSCSI connection FFP migration | |
1827 | */ | |
1828 | static void bnx2i_process_update_conn_cmpl(struct bnx2i_hba *hba, | |
1829 | struct iscsi_kcqe *update_kcqe) | |
1830 | { | |
1831 | struct bnx2i_conn *conn; | |
1832 | u32 iscsi_cid; | |
1833 | ||
1834 | iscsi_cid = update_kcqe->iscsi_conn_id; | |
1835 | conn = bnx2i_get_conn_from_id(hba, iscsi_cid); | |
1836 | ||
1837 | if (!conn) { | |
1838 | printk(KERN_ALERT "conn_update: cid %x not valid\n", iscsi_cid); | |
1839 | return; | |
1840 | } | |
1841 | if (!conn->ep) { | |
1842 | printk(KERN_ALERT "cid %x does not have ep bound\n", iscsi_cid); | |
1843 | return; | |
1844 | } | |
1845 | ||
1846 | if (update_kcqe->completion_status) { | |
1847 | printk(KERN_ALERT "request failed cid %x\n", iscsi_cid); | |
1848 | conn->ep->state = EP_STATE_ULP_UPDATE_FAILED; | |
1849 | } else | |
1850 | conn->ep->state = EP_STATE_ULP_UPDATE_COMPL; | |
1851 | ||
1852 | wake_up_interruptible(&conn->ep->ofld_wait); | |
1853 | } | |
1854 | ||
1855 | ||
1856 | /** | |
1857 | * bnx2i_recovery_que_add_conn - add connection to recovery queue | |
1858 | * @hba: adapter structure pointer | |
1859 | * @bnx2i_conn: iscsi connection | |
1860 | * | |
1861 | * Add connection to recovery queue and schedule adapter eh worker | |
1862 | */ | |
1863 | static void bnx2i_recovery_que_add_conn(struct bnx2i_hba *hba, | |
1864 | struct bnx2i_conn *bnx2i_conn) | |
1865 | { | |
1866 | iscsi_conn_failure(bnx2i_conn->cls_conn->dd_data, | |
1867 | ISCSI_ERR_CONN_FAILED); | |
1868 | } | |
1869 | ||
1870 | ||
1871 | /** | |
1872 | * bnx2i_process_tcp_error - process error notification on a given connection | |
1873 | * | |
1874 | * @hba: adapter structure pointer | |
1875 | * @tcp_err: tcp error kcqe pointer | |
1876 | * | |
1877 | * handles tcp level error notifications from FW. | |
1878 | */ | |
1879 | static void bnx2i_process_tcp_error(struct bnx2i_hba *hba, | |
1880 | struct iscsi_kcqe *tcp_err) | |
1881 | { | |
1882 | struct bnx2i_conn *bnx2i_conn; | |
1883 | u32 iscsi_cid; | |
1884 | ||
1885 | iscsi_cid = tcp_err->iscsi_conn_id; | |
1886 | bnx2i_conn = bnx2i_get_conn_from_id(hba, iscsi_cid); | |
1887 | ||
1888 | if (!bnx2i_conn) { | |
1889 | printk(KERN_ALERT "bnx2i - cid 0x%x not valid\n", iscsi_cid); | |
1890 | return; | |
1891 | } | |
1892 | ||
1893 | printk(KERN_ALERT "bnx2i - cid 0x%x had TCP errors, error code 0x%x\n", | |
1894 | iscsi_cid, tcp_err->completion_status); | |
1895 | bnx2i_recovery_que_add_conn(bnx2i_conn->hba, bnx2i_conn); | |
1896 | } | |
1897 | ||
1898 | ||
1899 | /** | |
1900 | * bnx2i_process_iscsi_error - process error notification on a given connection | |
1901 | * @hba: adapter structure pointer | |
1902 | * @iscsi_err: iscsi error kcqe pointer | |
1903 | * | |
1904 | * handles iscsi error notifications from the FW. Firmware based in initial | |
1905 | * handshake classifies iscsi protocol / TCP rfc violation into either | |
1906 | * warning or error indications. If indication is of "Error" type, driver | |
1907 | * will initiate session recovery for that connection/session. For | |
1908 | * "Warning" type indication, driver will put out a system log message | |
1909 | * (there will be only one message for each type for the life of the | |
1910 | * session, this is to avoid un-necessarily overloading the system) | |
1911 | */ | |
1912 | static void bnx2i_process_iscsi_error(struct bnx2i_hba *hba, | |
1913 | struct iscsi_kcqe *iscsi_err) | |
1914 | { | |
1915 | struct bnx2i_conn *bnx2i_conn; | |
1916 | u32 iscsi_cid; | |
1917 | char warn_notice[] = "iscsi_warning"; | |
1918 | char error_notice[] = "iscsi_error"; | |
1919 | char additional_notice[64]; | |
1920 | char *message; | |
1921 | int need_recovery; | |
1922 | u64 err_mask64; | |
1923 | ||
1924 | iscsi_cid = iscsi_err->iscsi_conn_id; | |
1925 | bnx2i_conn = bnx2i_get_conn_from_id(hba, iscsi_cid); | |
1926 | if (!bnx2i_conn) { | |
1927 | printk(KERN_ALERT "bnx2i - cid 0x%x not valid\n", iscsi_cid); | |
1928 | return; | |
1929 | } | |
1930 | ||
1931 | err_mask64 = (0x1ULL << iscsi_err->completion_status); | |
1932 | ||
1933 | if (err_mask64 & iscsi_error_mask) { | |
1934 | need_recovery = 0; | |
1935 | message = warn_notice; | |
1936 | } else { | |
1937 | need_recovery = 1; | |
1938 | message = error_notice; | |
1939 | } | |
1940 | ||
1941 | switch (iscsi_err->completion_status) { | |
1942 | case ISCSI_KCQE_COMPLETION_STATUS_HDR_DIG_ERR: | |
1943 | strcpy(additional_notice, "hdr digest err"); | |
1944 | break; | |
1945 | case ISCSI_KCQE_COMPLETION_STATUS_DATA_DIG_ERR: | |
1946 | strcpy(additional_notice, "data digest err"); | |
1947 | break; | |
1948 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_OPCODE: | |
1949 | strcpy(additional_notice, "wrong opcode rcvd"); | |
1950 | break; | |
1951 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_AHS_LEN: | |
1952 | strcpy(additional_notice, "AHS len > 0 rcvd"); | |
1953 | break; | |
1954 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_ITT: | |
1955 | strcpy(additional_notice, "invalid ITT rcvd"); | |
1956 | break; | |
1957 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_STATSN: | |
1958 | strcpy(additional_notice, "wrong StatSN rcvd"); | |
1959 | break; | |
1960 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_EXP_DATASN: | |
1961 | strcpy(additional_notice, "wrong DataSN rcvd"); | |
1962 | break; | |
1963 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T: | |
1964 | strcpy(additional_notice, "pend R2T violation"); | |
1965 | break; | |
1966 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_0: | |
1967 | strcpy(additional_notice, "ERL0, UO"); | |
1968 | break; | |
1969 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_1: | |
1970 | strcpy(additional_notice, "ERL0, U1"); | |
1971 | break; | |
1972 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_2: | |
1973 | strcpy(additional_notice, "ERL0, U2"); | |
1974 | break; | |
1975 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_3: | |
1976 | strcpy(additional_notice, "ERL0, U3"); | |
1977 | break; | |
1978 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_4: | |
1979 | strcpy(additional_notice, "ERL0, U4"); | |
1980 | break; | |
1981 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_5: | |
1982 | strcpy(additional_notice, "ERL0, U5"); | |
1983 | break; | |
1984 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_6: | |
1985 | strcpy(additional_notice, "ERL0, U6"); | |
1986 | break; | |
1987 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REMAIN_RCV_LEN: | |
1988 | strcpy(additional_notice, "invalid resi len"); | |
1989 | break; | |
1990 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_MAX_RCV_PDU_LEN: | |
1991 | strcpy(additional_notice, "MRDSL violation"); | |
1992 | break; | |
1993 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_F_BIT_ZERO: | |
1994 | strcpy(additional_notice, "F-bit not set"); | |
1995 | break; | |
1996 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_NOT_RSRV: | |
1997 | strcpy(additional_notice, "invalid TTT"); | |
1998 | break; | |
1999 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DATASN: | |
2000 | strcpy(additional_notice, "invalid DataSN"); | |
2001 | break; | |
2002 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REMAIN_BURST_LEN: | |
2003 | strcpy(additional_notice, "burst len violation"); | |
2004 | break; | |
2005 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_BUFFER_OFF: | |
2006 | strcpy(additional_notice, "buf offset violation"); | |
2007 | break; | |
2008 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_LUN: | |
2009 | strcpy(additional_notice, "invalid LUN field"); | |
2010 | break; | |
2011 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_R2TSN: | |
2012 | strcpy(additional_notice, "invalid R2TSN field"); | |
2013 | break; | |
2014 | #define BNX2I_ERR_DESIRED_DATA_TRNS_LEN_0 \ | |
2015 | ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_0 | |
2016 | case BNX2I_ERR_DESIRED_DATA_TRNS_LEN_0: | |
2017 | strcpy(additional_notice, "invalid cmd len1"); | |
2018 | break; | |
2019 | #define BNX2I_ERR_DESIRED_DATA_TRNS_LEN_1 \ | |
2020 | ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_1 | |
2021 | case BNX2I_ERR_DESIRED_DATA_TRNS_LEN_1: | |
2022 | strcpy(additional_notice, "invalid cmd len2"); | |
2023 | break; | |
2024 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T_EXCEED: | |
2025 | strcpy(additional_notice, | |
2026 | "pend r2t exceeds MaxOutstandingR2T value"); | |
2027 | break; | |
2028 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_IS_RSRV: | |
2029 | strcpy(additional_notice, "TTT is rsvd"); | |
2030 | break; | |
2031 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_MAX_BURST_LEN: | |
2032 | strcpy(additional_notice, "MBL violation"); | |
2033 | break; | |
2034 | #define BNX2I_ERR_DATA_SEG_LEN_NOT_ZERO \ | |
2035 | ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DATA_SEG_LEN_NOT_ZERO | |
2036 | case BNX2I_ERR_DATA_SEG_LEN_NOT_ZERO: | |
2037 | strcpy(additional_notice, "data seg len != 0"); | |
2038 | break; | |
2039 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REJECT_PDU_LEN: | |
2040 | strcpy(additional_notice, "reject pdu len error"); | |
2041 | break; | |
2042 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_ASYNC_PDU_LEN: | |
2043 | strcpy(additional_notice, "async pdu len error"); | |
2044 | break; | |
2045 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_NOPIN_PDU_LEN: | |
2046 | strcpy(additional_notice, "nopin pdu len error"); | |
2047 | break; | |
2048 | #define BNX2_ERR_PEND_R2T_IN_CLEANUP \ | |
2049 | ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T_IN_CLEANUP | |
2050 | case BNX2_ERR_PEND_R2T_IN_CLEANUP: | |
2051 | strcpy(additional_notice, "pend r2t in cleanup"); | |
2052 | break; | |
2053 | ||
2054 | case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_IP_FRAGMENT: | |
2055 | strcpy(additional_notice, "IP fragments rcvd"); | |
2056 | break; | |
2057 | case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_IP_OPTIONS: | |
2058 | strcpy(additional_notice, "IP options error"); | |
2059 | break; | |
2060 | case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_URGENT_FLAG: | |
2061 | strcpy(additional_notice, "urgent flag error"); | |
2062 | break; | |
2063 | default: | |
2064 | printk(KERN_ALERT "iscsi_err - unknown err %x\n", | |
2065 | iscsi_err->completion_status); | |
2066 | } | |
2067 | ||
2068 | if (need_recovery) { | |
2069 | iscsi_conn_printk(KERN_ALERT, | |
2070 | bnx2i_conn->cls_conn->dd_data, | |
2071 | "bnx2i: %s - %s\n", | |
2072 | message, additional_notice); | |
2073 | ||
2074 | iscsi_conn_printk(KERN_ALERT, | |
2075 | bnx2i_conn->cls_conn->dd_data, | |
2076 | "conn_err - hostno %d conn %p, " | |
2077 | "iscsi_cid %x cid %x\n", | |
2078 | bnx2i_conn->hba->shost->host_no, | |
2079 | bnx2i_conn, bnx2i_conn->ep->ep_iscsi_cid, | |
2080 | bnx2i_conn->ep->ep_cid); | |
2081 | bnx2i_recovery_que_add_conn(bnx2i_conn->hba, bnx2i_conn); | |
2082 | } else | |
2083 | if (!test_and_set_bit(iscsi_err->completion_status, | |
2084 | (void *) &bnx2i_conn->violation_notified)) | |
2085 | iscsi_conn_printk(KERN_ALERT, | |
2086 | bnx2i_conn->cls_conn->dd_data, | |
2087 | "bnx2i: %s - %s\n", | |
2088 | message, additional_notice); | |
2089 | } | |
2090 | ||
2091 | ||
2092 | /** | |
2093 | * bnx2i_process_conn_destroy_cmpl - process iscsi conn destroy completion | |
2094 | * @hba: adapter structure pointer | |
2095 | * @conn_destroy: conn destroy kcqe pointer | |
2096 | * | |
2097 | * handles connection destroy completion request. | |
2098 | */ | |
2099 | static void bnx2i_process_conn_destroy_cmpl(struct bnx2i_hba *hba, | |
2100 | struct iscsi_kcqe *conn_destroy) | |
2101 | { | |
2102 | struct bnx2i_endpoint *ep; | |
2103 | ||
2104 | ep = bnx2i_find_ep_in_destroy_list(hba, conn_destroy->iscsi_conn_id); | |
2105 | if (!ep) { | |
2106 | printk(KERN_ALERT "bnx2i_conn_destroy_cmpl: no pending " | |
2107 | "offload request, unexpected complection\n"); | |
2108 | return; | |
2109 | } | |
2110 | ||
2111 | if (hba != ep->hba) { | |
2112 | printk(KERN_ALERT "conn destroy- error hba mis-match\n"); | |
2113 | return; | |
2114 | } | |
2115 | ||
2116 | if (conn_destroy->completion_status) { | |
2117 | printk(KERN_ALERT "conn_destroy_cmpl: op failed\n"); | |
2118 | ep->state = EP_STATE_CLEANUP_FAILED; | |
2119 | } else | |
2120 | ep->state = EP_STATE_CLEANUP_CMPL; | |
2121 | wake_up_interruptible(&ep->ofld_wait); | |
2122 | } | |
2123 | ||
2124 | ||
2125 | /** | |
2126 | * bnx2i_process_ofld_cmpl - process initial iscsi conn offload completion | |
2127 | * @hba: adapter structure pointer | |
2128 | * @ofld_kcqe: conn offload kcqe pointer | |
2129 | * | |
2130 | * handles initial connection offload completion, ep_connect() thread is | |
2131 | * woken-up to continue with LLP connect process | |
2132 | */ | |
2133 | static void bnx2i_process_ofld_cmpl(struct bnx2i_hba *hba, | |
2134 | struct iscsi_kcqe *ofld_kcqe) | |
2135 | { | |
2136 | u32 cid_addr; | |
2137 | struct bnx2i_endpoint *ep; | |
2138 | u32 cid_num; | |
2139 | ||
2140 | ep = bnx2i_find_ep_in_ofld_list(hba, ofld_kcqe->iscsi_conn_id); | |
2141 | if (!ep) { | |
2142 | printk(KERN_ALERT "ofld_cmpl: no pend offload request\n"); | |
2143 | return; | |
2144 | } | |
2145 | ||
2146 | if (hba != ep->hba) { | |
2147 | printk(KERN_ALERT "ofld_cmpl: error hba mis-match\n"); | |
2148 | return; | |
2149 | } | |
2150 | ||
2151 | if (ofld_kcqe->completion_status) { | |
2152 | if (ofld_kcqe->completion_status == | |
2153 | ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE) | |
2154 | printk(KERN_ALERT "bnx2i: unable to allocate" | |
2155 | " iSCSI context resources\n"); | |
2156 | ep->state = EP_STATE_OFLD_FAILED; | |
2157 | } else { | |
2158 | ep->state = EP_STATE_OFLD_COMPL; | |
2159 | cid_addr = ofld_kcqe->iscsi_conn_context_id; | |
2160 | cid_num = bnx2i_get_cid_num(ep); | |
2161 | ep->ep_cid = cid_addr; | |
2162 | ep->qp.ctx_base = NULL; | |
2163 | } | |
2164 | wake_up_interruptible(&ep->ofld_wait); | |
2165 | } | |
2166 | ||
2167 | /** | |
2168 | * bnx2i_indicate_kcqe - process iscsi conn update completion KCQE | |
2169 | * @hba: adapter structure pointer | |
2170 | * @update_kcqe: kcqe pointer | |
2171 | * | |
2172 | * Generic KCQ event handler/dispatcher | |
2173 | */ | |
2174 | static void bnx2i_indicate_kcqe(void *context, struct kcqe *kcqe[], | |
2175 | u32 num_cqe) | |
2176 | { | |
2177 | struct bnx2i_hba *hba = context; | |
2178 | int i = 0; | |
2179 | struct iscsi_kcqe *ikcqe = NULL; | |
2180 | ||
2181 | while (i < num_cqe) { | |
2182 | ikcqe = (struct iscsi_kcqe *) kcqe[i++]; | |
2183 | ||
2184 | if (ikcqe->op_code == | |
2185 | ISCSI_KCQE_OPCODE_CQ_EVENT_NOTIFICATION) | |
2186 | bnx2i_fastpath_notification(hba, ikcqe); | |
2187 | else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_OFFLOAD_CONN) | |
2188 | bnx2i_process_ofld_cmpl(hba, ikcqe); | |
2189 | else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_UPDATE_CONN) | |
2190 | bnx2i_process_update_conn_cmpl(hba, ikcqe); | |
2191 | else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_INIT) { | |
2192 | if (ikcqe->completion_status != | |
2193 | ISCSI_KCQE_COMPLETION_STATUS_SUCCESS) | |
2194 | bnx2i_iscsi_license_error(hba, ikcqe->\ | |
2195 | completion_status); | |
2196 | else { | |
2197 | set_bit(ADAPTER_STATE_UP, &hba->adapter_state); | |
2198 | bnx2i_get_link_state(hba); | |
2199 | printk(KERN_INFO "bnx2i [%.2x:%.2x.%.2x]: " | |
2200 | "ISCSI_INIT passed\n", | |
2201 | (u8)hba->pcidev->bus->number, | |
2202 | hba->pci_devno, | |
2203 | (u8)hba->pci_func); | |
2204 | ||
2205 | ||
2206 | } | |
2207 | } else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_DESTROY_CONN) | |
2208 | bnx2i_process_conn_destroy_cmpl(hba, ikcqe); | |
2209 | else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_ISCSI_ERROR) | |
2210 | bnx2i_process_iscsi_error(hba, ikcqe); | |
2211 | else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_TCP_ERROR) | |
2212 | bnx2i_process_tcp_error(hba, ikcqe); | |
2213 | else | |
2214 | printk(KERN_ALERT "bnx2i: unknown opcode 0x%x\n", | |
2215 | ikcqe->op_code); | |
2216 | } | |
2217 | } | |
2218 | ||
2219 | ||
2220 | /** | |
2221 | * bnx2i_indicate_netevent - Generic netdev event handler | |
2222 | * @context: adapter structure pointer | |
2223 | * @event: event type | |
2224 | * | |
2225 | * Handles four netdev events, NETDEV_UP, NETDEV_DOWN, | |
2226 | * NETDEV_GOING_DOWN and NETDEV_CHANGE | |
2227 | */ | |
2228 | static void bnx2i_indicate_netevent(void *context, unsigned long event) | |
2229 | { | |
2230 | struct bnx2i_hba *hba = context; | |
2231 | ||
2232 | switch (event) { | |
2233 | case NETDEV_UP: | |
2234 | if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) | |
2235 | bnx2i_send_fw_iscsi_init_msg(hba); | |
2236 | break; | |
2237 | case NETDEV_DOWN: | |
2238 | clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); | |
2239 | clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); | |
2240 | break; | |
2241 | case NETDEV_GOING_DOWN: | |
2242 | set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); | |
2243 | iscsi_host_for_each_session(hba->shost, | |
2244 | bnx2i_drop_session); | |
2245 | break; | |
2246 | case NETDEV_CHANGE: | |
2247 | bnx2i_get_link_state(hba); | |
2248 | break; | |
2249 | default: | |
2250 | ; | |
2251 | } | |
2252 | } | |
2253 | ||
2254 | ||
2255 | /** | |
2256 | * bnx2i_cm_connect_cmpl - process iscsi conn establishment completion | |
2257 | * @cm_sk: cnic sock structure pointer | |
2258 | * | |
2259 | * function callback exported via bnx2i - cnic driver interface to | |
2260 | * indicate completion of option-2 TCP connect request. | |
2261 | */ | |
2262 | static void bnx2i_cm_connect_cmpl(struct cnic_sock *cm_sk) | |
2263 | { | |
2264 | struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; | |
2265 | ||
2266 | if (test_bit(ADAPTER_STATE_GOING_DOWN, &ep->hba->adapter_state)) | |
2267 | ep->state = EP_STATE_CONNECT_FAILED; | |
2268 | else if (test_bit(SK_F_OFFLD_COMPLETE, &cm_sk->flags)) | |
2269 | ep->state = EP_STATE_CONNECT_COMPL; | |
2270 | else | |
2271 | ep->state = EP_STATE_CONNECT_FAILED; | |
2272 | ||
2273 | wake_up_interruptible(&ep->ofld_wait); | |
2274 | } | |
2275 | ||
2276 | ||
2277 | /** | |
2278 | * bnx2i_cm_close_cmpl - process tcp conn close completion | |
2279 | * @cm_sk: cnic sock structure pointer | |
2280 | * | |
2281 | * function callback exported via bnx2i - cnic driver interface to | |
2282 | * indicate completion of option-2 graceful TCP connect shutdown | |
2283 | */ | |
2284 | static void bnx2i_cm_close_cmpl(struct cnic_sock *cm_sk) | |
2285 | { | |
2286 | struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; | |
2287 | ||
2288 | ep->state = EP_STATE_DISCONN_COMPL; | |
2289 | wake_up_interruptible(&ep->ofld_wait); | |
2290 | } | |
2291 | ||
2292 | ||
2293 | /** | |
2294 | * bnx2i_cm_abort_cmpl - process abortive tcp conn teardown completion | |
2295 | * @cm_sk: cnic sock structure pointer | |
2296 | * | |
2297 | * function callback exported via bnx2i - cnic driver interface to | |
2298 | * indicate completion of option-2 abortive TCP connect termination | |
2299 | */ | |
2300 | static void bnx2i_cm_abort_cmpl(struct cnic_sock *cm_sk) | |
2301 | { | |
2302 | struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; | |
2303 | ||
2304 | ep->state = EP_STATE_DISCONN_COMPL; | |
2305 | wake_up_interruptible(&ep->ofld_wait); | |
2306 | } | |
2307 | ||
2308 | ||
2309 | /** | |
2310 | * bnx2i_cm_remote_close - process received TCP FIN | |
2311 | * @hba: adapter structure pointer | |
2312 | * @update_kcqe: kcqe pointer | |
2313 | * | |
2314 | * function callback exported via bnx2i - cnic driver interface to indicate | |
2315 | * async TCP events such as FIN | |
2316 | */ | |
2317 | static void bnx2i_cm_remote_close(struct cnic_sock *cm_sk) | |
2318 | { | |
2319 | struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; | |
2320 | ||
2321 | ep->state = EP_STATE_TCP_FIN_RCVD; | |
2322 | if (ep->conn) | |
2323 | bnx2i_recovery_que_add_conn(ep->hba, ep->conn); | |
2324 | } | |
2325 | ||
2326 | /** | |
2327 | * bnx2i_cm_remote_abort - process TCP RST and start conn cleanup | |
2328 | * @hba: adapter structure pointer | |
2329 | * @update_kcqe: kcqe pointer | |
2330 | * | |
2331 | * function callback exported via bnx2i - cnic driver interface to | |
2332 | * indicate async TCP events (RST) sent by the peer. | |
2333 | */ | |
2334 | static void bnx2i_cm_remote_abort(struct cnic_sock *cm_sk) | |
2335 | { | |
2336 | struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; | |
2337 | ||
2338 | ep->state = EP_STATE_TCP_RST_RCVD; | |
2339 | if (ep->conn) | |
2340 | bnx2i_recovery_que_add_conn(ep->hba, ep->conn); | |
2341 | } | |
2342 | ||
2343 | ||
2344 | static void bnx2i_send_nl_mesg(struct cnic_dev *dev, u32 msg_type, | |
2345 | char *buf, u16 buflen) | |
2346 | { | |
2347 | struct bnx2i_hba *hba; | |
2348 | ||
2349 | hba = bnx2i_find_hba_for_cnic(dev); | |
2350 | if (!hba) | |
2351 | return; | |
2352 | ||
2353 | if (iscsi_offload_mesg(hba->shost, &bnx2i_iscsi_transport, | |
2354 | msg_type, buf, buflen)) | |
2355 | printk(KERN_ALERT "bnx2i: private nl message send error\n"); | |
2356 | ||
2357 | } | |
2358 | ||
2359 | ||
2360 | /** | |
2361 | * bnx2i_cnic_cb - global template of bnx2i - cnic driver interface structure | |
2362 | * carrying callback function pointers | |
2363 | * | |
2364 | */ | |
2365 | struct cnic_ulp_ops bnx2i_cnic_cb = { | |
2366 | .cnic_init = bnx2i_ulp_init, | |
2367 | .cnic_exit = bnx2i_ulp_exit, | |
2368 | .cnic_start = bnx2i_start, | |
2369 | .cnic_stop = bnx2i_stop, | |
2370 | .indicate_kcqes = bnx2i_indicate_kcqe, | |
2371 | .indicate_netevent = bnx2i_indicate_netevent, | |
2372 | .cm_connect_complete = bnx2i_cm_connect_cmpl, | |
2373 | .cm_close_complete = bnx2i_cm_close_cmpl, | |
2374 | .cm_abort_complete = bnx2i_cm_abort_cmpl, | |
2375 | .cm_remote_close = bnx2i_cm_remote_close, | |
2376 | .cm_remote_abort = bnx2i_cm_remote_abort, | |
2377 | .iscsi_nl_send_msg = bnx2i_send_nl_mesg, | |
2378 | .owner = THIS_MODULE | |
2379 | }; | |
2380 | ||
2381 | ||
2382 | /** | |
2383 | * bnx2i_map_ep_dbell_regs - map connection doorbell registers | |
2384 | * @ep: bnx2i endpoint | |
2385 | * | |
2386 | * maps connection's SQ and RQ doorbell registers, 5706/5708/5709 hosts these | |
2387 | * register in BAR #0. Whereas in 57710 these register are accessed by | |
2388 | * mapping BAR #1 | |
2389 | */ | |
2390 | int bnx2i_map_ep_dbell_regs(struct bnx2i_endpoint *ep) | |
2391 | { | |
2392 | u32 cid_num; | |
2393 | u32 reg_off; | |
2394 | u32 first_l4l5; | |
2395 | u32 ctx_sz; | |
2396 | u32 config2; | |
2397 | resource_size_t reg_base; | |
2398 | ||
2399 | cid_num = bnx2i_get_cid_num(ep); | |
2400 | ||
2401 | if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { | |
2402 | reg_base = pci_resource_start(ep->hba->pcidev, | |
2403 | BNX2X_DOORBELL_PCI_BAR); | |
2404 | reg_off = PAGE_SIZE * (cid_num & 0x1FFFF) + DPM_TRIGER_TYPE; | |
2405 | ep->qp.ctx_base = ioremap_nocache(reg_base + reg_off, 4); | |
2406 | goto arm_cq; | |
2407 | } | |
2408 | ||
2409 | reg_base = ep->hba->netdev->base_addr; | |
2410 | if ((test_bit(BNX2I_NX2_DEV_5709, &ep->hba->cnic_dev_type)) && | |
2411 | (ep->hba->mail_queue_access == BNX2I_MQ_BIN_MODE)) { | |
2412 | config2 = REG_RD(ep->hba, BNX2_MQ_CONFIG2); | |
2413 | first_l4l5 = config2 & BNX2_MQ_CONFIG2_FIRST_L4L5; | |
2414 | ctx_sz = (config2 & BNX2_MQ_CONFIG2_CONT_SZ) >> 3; | |
2415 | if (ctx_sz) | |
2416 | reg_off = CTX_OFFSET + MAX_CID_CNT * MB_KERNEL_CTX_SIZE | |
53203244 | 2417 | + BNX2I_570X_PAGE_SIZE_DEFAULT * |
cf4e6363 MC |
2418 | (((cid_num - first_l4l5) / ctx_sz) + 256); |
2419 | else | |
2420 | reg_off = CTX_OFFSET + (MB_KERNEL_CTX_SIZE * cid_num); | |
2421 | } else | |
2422 | /* 5709 device in normal node and 5706/5708 devices */ | |
2423 | reg_off = CTX_OFFSET + (MB_KERNEL_CTX_SIZE * cid_num); | |
2424 | ||
2425 | ep->qp.ctx_base = ioremap_nocache(reg_base + reg_off, | |
2426 | MB_KERNEL_CTX_SIZE); | |
2427 | if (!ep->qp.ctx_base) | |
2428 | return -ENOMEM; | |
2429 | ||
2430 | arm_cq: | |
2431 | bnx2i_arm_cq_event_coalescing(ep, CNIC_ARM_CQE); | |
2432 | return 0; | |
2433 | } |