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f39a7757 | 1 | /* bnx2i_hwi.c: QLogic NetXtreme II iSCSI driver. |
cf4e6363 | 2 | * |
0b3bf387 | 3 | * Copyright (c) 2006 - 2013 Broadcom Corporation |
cf4e6363 MC |
4 | * Copyright (c) 2007, 2008 Red Hat, Inc. All rights reserved. |
5 | * Copyright (c) 2007, 2008 Mike Christie | |
f39a7757 | 6 | * Copyright (c) 2014, QLogic Corporation |
cf4e6363 MC |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation. | |
11 | * | |
12 | * Written by: Anil Veerabhadrappa (anilgv@broadcom.com) | |
f39a7757 VC |
13 | * Previously Maintained by: Eddie Wai (eddie.wai@broadcom.com) |
14 | * Maintained by: QLogic-Storage-Upstream@qlogic.com | |
cf4e6363 MC |
15 | */ |
16 | ||
5a0e3ad6 | 17 | #include <linux/gfp.h> |
cf4e6363 MC |
18 | #include <scsi/scsi_tcq.h> |
19 | #include <scsi/libiscsi.h> | |
20 | #include "bnx2i.h" | |
21 | ||
b5cf6b63 EW |
22 | DECLARE_PER_CPU(struct bnx2i_percpu_s, bnx2i_percpu); |
23 | ||
cf4e6363 MC |
24 | /** |
25 | * bnx2i_get_cid_num - get cid from ep | |
26 | * @ep: endpoint pointer | |
27 | * | |
28 | * Only applicable to 57710 family of devices | |
29 | */ | |
30 | static u32 bnx2i_get_cid_num(struct bnx2i_endpoint *ep) | |
31 | { | |
32 | u32 cid; | |
33 | ||
34 | if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) | |
35 | cid = ep->ep_cid; | |
36 | else | |
37 | cid = GET_CID_NUM(ep->ep_cid); | |
38 | return cid; | |
39 | } | |
40 | ||
41 | ||
42 | /** | |
43 | * bnx2i_adjust_qp_size - Adjust SQ/RQ/CQ size for 57710 device type | |
44 | * @hba: Adapter for which adjustments is to be made | |
45 | * | |
46 | * Only applicable to 57710 family of devices | |
47 | */ | |
48 | static void bnx2i_adjust_qp_size(struct bnx2i_hba *hba) | |
49 | { | |
50 | u32 num_elements_per_pg; | |
51 | ||
52 | if (test_bit(BNX2I_NX2_DEV_5706, &hba->cnic_dev_type) || | |
53 | test_bit(BNX2I_NX2_DEV_5708, &hba->cnic_dev_type) || | |
54 | test_bit(BNX2I_NX2_DEV_5709, &hba->cnic_dev_type)) { | |
55 | if (!is_power_of_2(hba->max_sqes)) | |
56 | hba->max_sqes = rounddown_pow_of_two(hba->max_sqes); | |
57 | ||
58 | if (!is_power_of_2(hba->max_rqes)) | |
59 | hba->max_rqes = rounddown_pow_of_two(hba->max_rqes); | |
60 | } | |
61 | ||
62 | /* Adjust each queue size if the user selection does not | |
63 | * yield integral num of page buffers | |
64 | */ | |
65 | /* adjust SQ */ | |
be1fefc2 | 66 | num_elements_per_pg = CNIC_PAGE_SIZE / BNX2I_SQ_WQE_SIZE; |
cf4e6363 MC |
67 | if (hba->max_sqes < num_elements_per_pg) |
68 | hba->max_sqes = num_elements_per_pg; | |
69 | else if (hba->max_sqes % num_elements_per_pg) | |
70 | hba->max_sqes = (hba->max_sqes + num_elements_per_pg - 1) & | |
71 | ~(num_elements_per_pg - 1); | |
72 | ||
73 | /* adjust CQ */ | |
be1fefc2 | 74 | num_elements_per_pg = CNIC_PAGE_SIZE / BNX2I_CQE_SIZE; |
cf4e6363 MC |
75 | if (hba->max_cqes < num_elements_per_pg) |
76 | hba->max_cqes = num_elements_per_pg; | |
77 | else if (hba->max_cqes % num_elements_per_pg) | |
78 | hba->max_cqes = (hba->max_cqes + num_elements_per_pg - 1) & | |
79 | ~(num_elements_per_pg - 1); | |
80 | ||
81 | /* adjust RQ */ | |
be1fefc2 | 82 | num_elements_per_pg = CNIC_PAGE_SIZE / BNX2I_RQ_WQE_SIZE; |
cf4e6363 MC |
83 | if (hba->max_rqes < num_elements_per_pg) |
84 | hba->max_rqes = num_elements_per_pg; | |
85 | else if (hba->max_rqes % num_elements_per_pg) | |
86 | hba->max_rqes = (hba->max_rqes + num_elements_per_pg - 1) & | |
87 | ~(num_elements_per_pg - 1); | |
88 | } | |
89 | ||
90 | ||
91 | /** | |
92 | * bnx2i_get_link_state - get network interface link state | |
93 | * @hba: adapter instance pointer | |
94 | * | |
95 | * updates adapter structure flag based on netdev state | |
96 | */ | |
97 | static void bnx2i_get_link_state(struct bnx2i_hba *hba) | |
98 | { | |
99 | if (test_bit(__LINK_STATE_NOCARRIER, &hba->netdev->state)) | |
100 | set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); | |
101 | else | |
102 | clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); | |
103 | } | |
104 | ||
105 | ||
106 | /** | |
107 | * bnx2i_iscsi_license_error - displays iscsi license related error message | |
108 | * @hba: adapter instance pointer | |
109 | * @error_code: error classification | |
110 | * | |
111 | * Puts out an error log when driver is unable to offload iscsi connection | |
112 | * due to license restrictions | |
113 | */ | |
114 | static void bnx2i_iscsi_license_error(struct bnx2i_hba *hba, u32 error_code) | |
115 | { | |
116 | if (error_code == ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED) | |
117 | /* iSCSI offload not supported on this device */ | |
118 | printk(KERN_ERR "bnx2i: iSCSI not supported, dev=%s\n", | |
119 | hba->netdev->name); | |
120 | if (error_code == ISCSI_KCQE_COMPLETION_STATUS_LOM_ISCSI_NOT_ENABLED) | |
121 | /* iSCSI offload not supported on this LOM device */ | |
122 | printk(KERN_ERR "bnx2i: LOM is not enable to " | |
123 | "offload iSCSI connections, dev=%s\n", | |
124 | hba->netdev->name); | |
125 | set_bit(ADAPTER_STATE_INIT_FAILED, &hba->adapter_state); | |
126 | } | |
127 | ||
128 | ||
129 | /** | |
130 | * bnx2i_arm_cq_event_coalescing - arms CQ to enable EQ notification | |
3f79410c | 131 | * @ep: endpoint (transport identifier) structure |
cf4e6363 MC |
132 | * @action: action, ARM or DISARM. For now only ARM_CQE is used |
133 | * | |
134 | * Arm'ing CQ will enable chip to generate global EQ events inorder to interrupt | |
135 | * the driver. EQ event is generated CQ index is hit or at least 1 CQ is | |
136 | * outstanding and on chip timer expires | |
137 | */ | |
b5cf6b63 | 138 | int bnx2i_arm_cq_event_coalescing(struct bnx2i_endpoint *ep, u8 action) |
cf4e6363 MC |
139 | { |
140 | struct bnx2i_5771x_cq_db *cq_db; | |
141 | u16 cq_index; | |
b5cf6b63 | 142 | u16 next_index = 0; |
8776193b | 143 | u32 num_active_cmds; |
cf4e6363 | 144 | |
8776193b | 145 | /* Coalesce CQ entries only on 10G devices */ |
cf4e6363 | 146 | if (!test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) |
b5cf6b63 | 147 | return 0; |
cf4e6363 | 148 | |
8776193b AV |
149 | /* Do not update CQ DB multiple times before firmware writes |
150 | * '0xFFFF' to CQDB->SQN field. Deviation may cause spurious | |
151 | * interrupts and other unwanted results | |
152 | */ | |
153 | cq_db = (struct bnx2i_5771x_cq_db *) ep->qp.cq_pgtbl_virt; | |
8776193b | 154 | |
9ae58e14 EW |
155 | if (action != CNIC_ARM_CQE_FP) |
156 | if (cq_db->sqn[0] && cq_db->sqn[0] != 0xFFFF) | |
b5cf6b63 | 157 | return 0; |
9ae58e14 EW |
158 | |
159 | if (action == CNIC_ARM_CQE || action == CNIC_ARM_CQE_FP) { | |
b5cf6b63 | 160 | num_active_cmds = atomic_read(&ep->num_active_cmds); |
8776193b AV |
161 | if (num_active_cmds <= event_coal_min) |
162 | next_index = 1; | |
b5cf6b63 EW |
163 | else { |
164 | next_index = num_active_cmds >> ep->ec_shift; | |
165 | if (next_index > num_active_cmds - event_coal_min) | |
166 | next_index = num_active_cmds - event_coal_min; | |
167 | } | |
8776193b AV |
168 | if (!next_index) |
169 | next_index = 1; | |
170 | cq_index = ep->qp.cqe_exp_seq_sn + next_index - 1; | |
171 | if (cq_index > ep->qp.cqe_size * 2) | |
172 | cq_index -= ep->qp.cqe_size * 2; | |
173 | if (!cq_index) | |
cf4e6363 | 174 | cq_index = 1; |
8776193b AV |
175 | |
176 | cq_db->sqn[0] = cq_index; | |
cf4e6363 | 177 | } |
b5cf6b63 | 178 | return next_index; |
cf4e6363 MC |
179 | } |
180 | ||
181 | ||
182 | /** | |
183 | * bnx2i_get_rq_buf - copy RQ buffer contents to driver buffer | |
25985edc | 184 | * @conn: iscsi connection on which RQ event occurred |
cf4e6363 MC |
185 | * @ptr: driver buffer to which RQ buffer contents is to |
186 | * be copied | |
187 | * @len: length of valid data inside RQ buf | |
188 | * | |
189 | * Copies RQ buffer contents from shared (DMA'able) memory region to | |
190 | * driver buffer. RQ is used to DMA unsolicitated iscsi pdu's and | |
191 | * scsi sense info | |
192 | */ | |
193 | void bnx2i_get_rq_buf(struct bnx2i_conn *bnx2i_conn, char *ptr, int len) | |
194 | { | |
195 | if (!bnx2i_conn->ep->qp.rqe_left) | |
196 | return; | |
197 | ||
198 | bnx2i_conn->ep->qp.rqe_left--; | |
199 | memcpy(ptr, (u8 *) bnx2i_conn->ep->qp.rq_cons_qe, len); | |
200 | if (bnx2i_conn->ep->qp.rq_cons_qe == bnx2i_conn->ep->qp.rq_last_qe) { | |
201 | bnx2i_conn->ep->qp.rq_cons_qe = bnx2i_conn->ep->qp.rq_first_qe; | |
202 | bnx2i_conn->ep->qp.rq_cons_idx = 0; | |
203 | } else { | |
204 | bnx2i_conn->ep->qp.rq_cons_qe++; | |
205 | bnx2i_conn->ep->qp.rq_cons_idx++; | |
206 | } | |
207 | } | |
208 | ||
209 | ||
210 | static void bnx2i_ring_577xx_doorbell(struct bnx2i_conn *conn) | |
211 | { | |
212 | struct bnx2i_5771x_dbell dbell; | |
213 | u32 msg; | |
214 | ||
215 | memset(&dbell, 0, sizeof(dbell)); | |
216 | dbell.dbell.header = (B577XX_ISCSI_CONNECTION_TYPE << | |
217 | B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT); | |
218 | msg = *((u32 *)&dbell); | |
219 | /* TODO : get doorbell register mapping */ | |
220 | writel(cpu_to_le32(msg), conn->ep->qp.ctx_base); | |
221 | } | |
222 | ||
223 | ||
224 | /** | |
225 | * bnx2i_put_rq_buf - Replenish RQ buffer, if required ring on chip doorbell | |
226 | * @conn: iscsi connection on which event to post | |
227 | * @count: number of RQ buffer being posted to chip | |
228 | * | |
229 | * No need to ring hardware doorbell for 57710 family of devices | |
230 | */ | |
231 | void bnx2i_put_rq_buf(struct bnx2i_conn *bnx2i_conn, int count) | |
232 | { | |
233 | struct bnx2i_5771x_sq_rq_db *rq_db; | |
234 | u16 hi_bit = (bnx2i_conn->ep->qp.rq_prod_idx & 0x8000); | |
235 | struct bnx2i_endpoint *ep = bnx2i_conn->ep; | |
236 | ||
237 | ep->qp.rqe_left += count; | |
238 | ep->qp.rq_prod_idx &= 0x7FFF; | |
239 | ep->qp.rq_prod_idx += count; | |
240 | ||
241 | if (ep->qp.rq_prod_idx > bnx2i_conn->hba->max_rqes) { | |
242 | ep->qp.rq_prod_idx %= bnx2i_conn->hba->max_rqes; | |
243 | if (!hi_bit) | |
244 | ep->qp.rq_prod_idx |= 0x8000; | |
245 | } else | |
246 | ep->qp.rq_prod_idx |= hi_bit; | |
247 | ||
248 | if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { | |
249 | rq_db = (struct bnx2i_5771x_sq_rq_db *) ep->qp.rq_pgtbl_virt; | |
250 | rq_db->prod_idx = ep->qp.rq_prod_idx; | |
251 | /* no need to ring hardware doorbell for 57710 */ | |
252 | } else { | |
253 | writew(ep->qp.rq_prod_idx, | |
254 | ep->qp.ctx_base + CNIC_RECV_DOORBELL); | |
255 | } | |
256 | mmiowb(); | |
257 | } | |
258 | ||
259 | ||
260 | /** | |
261 | * bnx2i_ring_sq_dbell - Ring SQ doorbell to wake-up the processing engine | |
262 | * @conn: iscsi connection to which new SQ entries belong | |
263 | * @count: number of SQ WQEs to post | |
264 | * | |
265 | * SQ DB is updated in host memory and TX Doorbell is rung for 57710 family | |
266 | * of devices. For 5706/5708/5709 new SQ WQE count is written into the | |
267 | * doorbell register | |
268 | */ | |
269 | static void bnx2i_ring_sq_dbell(struct bnx2i_conn *bnx2i_conn, int count) | |
270 | { | |
271 | struct bnx2i_5771x_sq_rq_db *sq_db; | |
272 | struct bnx2i_endpoint *ep = bnx2i_conn->ep; | |
273 | ||
b5cf6b63 | 274 | atomic_inc(&ep->num_active_cmds); |
cf4e6363 MC |
275 | wmb(); /* flush SQ WQE memory before the doorbell is rung */ |
276 | if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { | |
277 | sq_db = (struct bnx2i_5771x_sq_rq_db *) ep->qp.sq_pgtbl_virt; | |
278 | sq_db->prod_idx = ep->qp.sq_prod_idx; | |
279 | bnx2i_ring_577xx_doorbell(bnx2i_conn); | |
280 | } else | |
281 | writew(count, ep->qp.ctx_base + CNIC_SEND_DOORBELL); | |
282 | ||
283 | mmiowb(); /* flush posted PCI writes */ | |
284 | } | |
285 | ||
286 | ||
287 | /** | |
288 | * bnx2i_ring_dbell_update_sq_params - update SQ driver parameters | |
289 | * @conn: iscsi connection to which new SQ entries belong | |
290 | * @count: number of SQ WQEs to post | |
291 | * | |
292 | * this routine will update SQ driver parameters and ring the doorbell | |
293 | */ | |
294 | static void bnx2i_ring_dbell_update_sq_params(struct bnx2i_conn *bnx2i_conn, | |
295 | int count) | |
296 | { | |
297 | int tmp_cnt; | |
298 | ||
299 | if (count == 1) { | |
300 | if (bnx2i_conn->ep->qp.sq_prod_qe == | |
301 | bnx2i_conn->ep->qp.sq_last_qe) | |
302 | bnx2i_conn->ep->qp.sq_prod_qe = | |
303 | bnx2i_conn->ep->qp.sq_first_qe; | |
304 | else | |
305 | bnx2i_conn->ep->qp.sq_prod_qe++; | |
306 | } else { | |
307 | if ((bnx2i_conn->ep->qp.sq_prod_qe + count) <= | |
308 | bnx2i_conn->ep->qp.sq_last_qe) | |
309 | bnx2i_conn->ep->qp.sq_prod_qe += count; | |
310 | else { | |
311 | tmp_cnt = bnx2i_conn->ep->qp.sq_last_qe - | |
312 | bnx2i_conn->ep->qp.sq_prod_qe; | |
313 | bnx2i_conn->ep->qp.sq_prod_qe = | |
314 | &bnx2i_conn->ep->qp.sq_first_qe[count - | |
315 | (tmp_cnt + 1)]; | |
316 | } | |
317 | } | |
318 | bnx2i_conn->ep->qp.sq_prod_idx += count; | |
319 | /* Ring the doorbell */ | |
320 | bnx2i_ring_sq_dbell(bnx2i_conn, bnx2i_conn->ep->qp.sq_prod_idx); | |
321 | } | |
322 | ||
323 | ||
324 | /** | |
325 | * bnx2i_send_iscsi_login - post iSCSI login request MP WQE to hardware | |
326 | * @conn: iscsi connection | |
327 | * @cmd: driver command structure which is requesting | |
328 | * a WQE to sent to chip for further processing | |
329 | * | |
330 | * prepare and post an iSCSI Login request WQE to CNIC firmware | |
331 | */ | |
332 | int bnx2i_send_iscsi_login(struct bnx2i_conn *bnx2i_conn, | |
333 | struct iscsi_task *task) | |
334 | { | |
335 | struct bnx2i_cmd *bnx2i_cmd; | |
336 | struct bnx2i_login_request *login_wqe; | |
12352183 | 337 | struct iscsi_login_req *login_hdr; |
cf4e6363 MC |
338 | u32 dword; |
339 | ||
340 | bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data; | |
12352183 | 341 | login_hdr = (struct iscsi_login_req *)task->hdr; |
cf4e6363 MC |
342 | login_wqe = (struct bnx2i_login_request *) |
343 | bnx2i_conn->ep->qp.sq_prod_qe; | |
344 | ||
345 | login_wqe->op_code = login_hdr->opcode; | |
346 | login_wqe->op_attr = login_hdr->flags; | |
347 | login_wqe->version_max = login_hdr->max_version; | |
348 | login_wqe->version_min = login_hdr->min_version; | |
349 | login_wqe->data_length = ntoh24(login_hdr->dlength); | |
350 | login_wqe->isid_lo = *((u32 *) login_hdr->isid); | |
351 | login_wqe->isid_hi = *((u16 *) login_hdr->isid + 2); | |
352 | login_wqe->tsih = login_hdr->tsih; | |
353 | login_wqe->itt = task->itt | | |
354 | (ISCSI_TASK_TYPE_MPATH << ISCSI_LOGIN_REQUEST_TYPE_SHIFT); | |
355 | login_wqe->cid = login_hdr->cid; | |
356 | ||
357 | login_wqe->cmd_sn = be32_to_cpu(login_hdr->cmdsn); | |
358 | login_wqe->exp_stat_sn = be32_to_cpu(login_hdr->exp_statsn); | |
2e15efc7 | 359 | login_wqe->flags = ISCSI_LOGIN_REQUEST_UPDATE_EXP_STAT_SN; |
cf4e6363 MC |
360 | |
361 | login_wqe->resp_bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.resp_bd_dma; | |
362 | login_wqe->resp_bd_list_addr_hi = | |
363 | (u32) ((u64) bnx2i_conn->gen_pdu.resp_bd_dma >> 32); | |
364 | ||
365 | dword = ((1 << ISCSI_LOGIN_REQUEST_NUM_RESP_BDS_SHIFT) | | |
366 | (bnx2i_conn->gen_pdu.resp_buf_size << | |
367 | ISCSI_LOGIN_REQUEST_RESP_BUFFER_LENGTH_SHIFT)); | |
368 | login_wqe->resp_buffer = dword; | |
cf4e6363 MC |
369 | login_wqe->bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.req_bd_dma; |
370 | login_wqe->bd_list_addr_hi = | |
371 | (u32) ((u64) bnx2i_conn->gen_pdu.req_bd_dma >> 32); | |
372 | login_wqe->num_bds = 1; | |
373 | login_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ | |
374 | ||
375 | bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); | |
376 | return 0; | |
377 | } | |
378 | ||
379 | /** | |
380 | * bnx2i_send_iscsi_tmf - post iSCSI task management request MP WQE to hardware | |
381 | * @conn: iscsi connection | |
382 | * @mtask: driver command structure which is requesting | |
383 | * a WQE to sent to chip for further processing | |
384 | * | |
385 | * prepare and post an iSCSI Login request WQE to CNIC firmware | |
386 | */ | |
387 | int bnx2i_send_iscsi_tmf(struct bnx2i_conn *bnx2i_conn, | |
388 | struct iscsi_task *mtask) | |
389 | { | |
390 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
391 | struct iscsi_tm *tmfabort_hdr; | |
392 | struct scsi_cmnd *ref_sc; | |
393 | struct iscsi_task *ctask; | |
394 | struct bnx2i_cmd *bnx2i_cmd; | |
395 | struct bnx2i_tmf_request *tmfabort_wqe; | |
396 | u32 dword; | |
cf464fc5 | 397 | u32 scsi_lun[2]; |
cf4e6363 MC |
398 | |
399 | bnx2i_cmd = (struct bnx2i_cmd *)mtask->dd_data; | |
400 | tmfabort_hdr = (struct iscsi_tm *)mtask->hdr; | |
401 | tmfabort_wqe = (struct bnx2i_tmf_request *) | |
402 | bnx2i_conn->ep->qp.sq_prod_qe; | |
403 | ||
404 | tmfabort_wqe->op_code = tmfabort_hdr->opcode; | |
c47b4012 | 405 | tmfabort_wqe->op_attr = tmfabort_hdr->flags; |
cf4e6363 MC |
406 | |
407 | tmfabort_wqe->itt = (mtask->itt | (ISCSI_TASK_TYPE_MPATH << 14)); | |
408 | tmfabort_wqe->reserved2 = 0; | |
409 | tmfabort_wqe->cmd_sn = be32_to_cpu(tmfabort_hdr->cmdsn); | |
410 | ||
c47b4012 EW |
411 | switch (tmfabort_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) { |
412 | case ISCSI_TM_FUNC_ABORT_TASK: | |
413 | case ISCSI_TM_FUNC_TASK_REASSIGN: | |
414 | ctask = iscsi_itt_to_task(conn, tmfabort_hdr->rtt); | |
415 | if (!ctask || !ctask->sc) | |
416 | /* | |
417 | * the iscsi layer must have completed the cmd while | |
418 | * was starting up. | |
419 | * | |
420 | * Note: In the case of a SCSI cmd timeout, the task's | |
421 | * sc is still active; hence ctask->sc != 0 | |
422 | * In this case, the task must be aborted | |
423 | */ | |
424 | return 0; | |
425 | ||
426 | ref_sc = ctask->sc; | |
427 | if (ref_sc->sc_data_direction == DMA_TO_DEVICE) | |
428 | dword = (ISCSI_TASK_TYPE_WRITE << | |
429 | ISCSI_CMD_REQUEST_TYPE_SHIFT); | |
430 | else | |
431 | dword = (ISCSI_TASK_TYPE_READ << | |
432 | ISCSI_CMD_REQUEST_TYPE_SHIFT); | |
433 | tmfabort_wqe->ref_itt = (dword | | |
434 | (tmfabort_hdr->rtt & ISCSI_ITT_MASK)); | |
435 | break; | |
436 | default: | |
437 | tmfabort_wqe->ref_itt = RESERVED_ITT; | |
438 | } | |
516f43a2 | 439 | memcpy(scsi_lun, &tmfabort_hdr->lun, sizeof(struct scsi_lun)); |
cf464fc5 EW |
440 | tmfabort_wqe->lun[0] = be32_to_cpu(scsi_lun[0]); |
441 | tmfabort_wqe->lun[1] = be32_to_cpu(scsi_lun[1]); | |
442 | ||
cf4e6363 MC |
443 | tmfabort_wqe->ref_cmd_sn = be32_to_cpu(tmfabort_hdr->refcmdsn); |
444 | ||
445 | tmfabort_wqe->bd_list_addr_lo = (u32) bnx2i_conn->hba->mp_bd_dma; | |
446 | tmfabort_wqe->bd_list_addr_hi = (u32) | |
447 | ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); | |
448 | tmfabort_wqe->num_bds = 1; | |
449 | tmfabort_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ | |
450 | ||
451 | bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); | |
452 | return 0; | |
453 | } | |
454 | ||
09813ba5 EW |
455 | /** |
456 | * bnx2i_send_iscsi_text - post iSCSI text WQE to hardware | |
457 | * @conn: iscsi connection | |
458 | * @mtask: driver command structure which is requesting | |
459 | * a WQE to sent to chip for further processing | |
460 | * | |
461 | * prepare and post an iSCSI Text request WQE to CNIC firmware | |
462 | */ | |
463 | int bnx2i_send_iscsi_text(struct bnx2i_conn *bnx2i_conn, | |
464 | struct iscsi_task *mtask) | |
465 | { | |
466 | struct bnx2i_cmd *bnx2i_cmd; | |
467 | struct bnx2i_text_request *text_wqe; | |
468 | struct iscsi_text *text_hdr; | |
469 | u32 dword; | |
470 | ||
471 | bnx2i_cmd = (struct bnx2i_cmd *)mtask->dd_data; | |
472 | text_hdr = (struct iscsi_text *)mtask->hdr; | |
473 | text_wqe = (struct bnx2i_text_request *) bnx2i_conn->ep->qp.sq_prod_qe; | |
474 | ||
475 | memset(text_wqe, 0, sizeof(struct bnx2i_text_request)); | |
476 | ||
477 | text_wqe->op_code = text_hdr->opcode; | |
478 | text_wqe->op_attr = text_hdr->flags; | |
479 | text_wqe->data_length = ntoh24(text_hdr->dlength); | |
480 | text_wqe->itt = mtask->itt | | |
481 | (ISCSI_TASK_TYPE_MPATH << ISCSI_TEXT_REQUEST_TYPE_SHIFT); | |
482 | text_wqe->ttt = be32_to_cpu(text_hdr->ttt); | |
483 | ||
484 | text_wqe->cmd_sn = be32_to_cpu(text_hdr->cmdsn); | |
485 | ||
486 | text_wqe->resp_bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.resp_bd_dma; | |
487 | text_wqe->resp_bd_list_addr_hi = | |
488 | (u32) ((u64) bnx2i_conn->gen_pdu.resp_bd_dma >> 32); | |
489 | ||
490 | dword = ((1 << ISCSI_TEXT_REQUEST_NUM_RESP_BDS_SHIFT) | | |
491 | (bnx2i_conn->gen_pdu.resp_buf_size << | |
492 | ISCSI_TEXT_REQUEST_RESP_BUFFER_LENGTH_SHIFT)); | |
493 | text_wqe->resp_buffer = dword; | |
494 | text_wqe->bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.req_bd_dma; | |
495 | text_wqe->bd_list_addr_hi = | |
496 | (u32) ((u64) bnx2i_conn->gen_pdu.req_bd_dma >> 32); | |
497 | text_wqe->num_bds = 1; | |
498 | text_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ | |
499 | ||
500 | bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); | |
501 | return 0; | |
502 | } | |
503 | ||
504 | ||
cf4e6363 MC |
505 | /** |
506 | * bnx2i_send_iscsi_scsicmd - post iSCSI scsicmd request WQE to hardware | |
507 | * @conn: iscsi connection | |
508 | * @cmd: driver command structure which is requesting | |
509 | * a WQE to sent to chip for further processing | |
510 | * | |
511 | * prepare and post an iSCSI SCSI-CMD request WQE to CNIC firmware | |
512 | */ | |
513 | int bnx2i_send_iscsi_scsicmd(struct bnx2i_conn *bnx2i_conn, | |
514 | struct bnx2i_cmd *cmd) | |
515 | { | |
516 | struct bnx2i_cmd_request *scsi_cmd_wqe; | |
517 | ||
518 | scsi_cmd_wqe = (struct bnx2i_cmd_request *) | |
519 | bnx2i_conn->ep->qp.sq_prod_qe; | |
520 | memcpy(scsi_cmd_wqe, &cmd->req, sizeof(struct bnx2i_cmd_request)); | |
521 | scsi_cmd_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ | |
522 | ||
523 | bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); | |
524 | return 0; | |
525 | } | |
526 | ||
527 | /** | |
528 | * bnx2i_send_iscsi_nopout - post iSCSI NOPOUT 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 | |
cf4e6363 MC |
532 | * @datap: payload buffer pointer |
533 | * @data_len: payload data length | |
534 | * @unsol: indicated whether nopout pdu is unsolicited pdu or | |
535 | * in response to target's NOPIN w/ TTT != FFFFFFFF | |
536 | * | |
537 | * prepare and post a nopout request WQE to CNIC firmware | |
538 | */ | |
539 | int bnx2i_send_iscsi_nopout(struct bnx2i_conn *bnx2i_conn, | |
39304072 | 540 | struct iscsi_task *task, |
cf4e6363 MC |
541 | char *datap, int data_len, int unsol) |
542 | { | |
543 | struct bnx2i_endpoint *ep = bnx2i_conn->ep; | |
544 | struct bnx2i_cmd *bnx2i_cmd; | |
545 | struct bnx2i_nop_out_request *nopout_wqe; | |
546 | struct iscsi_nopout *nopout_hdr; | |
547 | ||
548 | bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data; | |
549 | nopout_hdr = (struct iscsi_nopout *)task->hdr; | |
550 | nopout_wqe = (struct bnx2i_nop_out_request *)ep->qp.sq_prod_qe; | |
70e14722 EW |
551 | |
552 | memset(nopout_wqe, 0x00, sizeof(struct bnx2i_nop_out_request)); | |
553 | ||
cf4e6363 MC |
554 | nopout_wqe->op_code = nopout_hdr->opcode; |
555 | nopout_wqe->op_attr = ISCSI_FLAG_CMD_FINAL; | |
516f43a2 | 556 | memcpy(nopout_wqe->lun, &nopout_hdr->lun, 8); |
cf4e6363 MC |
557 | |
558 | if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { | |
ee15bd2d | 559 | u32 tmp = nopout_wqe->lun[0]; |
cf4e6363 | 560 | /* 57710 requires LUN field to be swapped */ |
ee15bd2d EW |
561 | nopout_wqe->lun[0] = nopout_wqe->lun[1]; |
562 | nopout_wqe->lun[1] = tmp; | |
cf4e6363 MC |
563 | } |
564 | ||
565 | nopout_wqe->itt = ((u16)task->itt | | |
566 | (ISCSI_TASK_TYPE_MPATH << | |
567 | ISCSI_TMF_REQUEST_TYPE_SHIFT)); | |
610602f3 | 568 | nopout_wqe->ttt = be32_to_cpu(nopout_hdr->ttt); |
cf4e6363 MC |
569 | nopout_wqe->flags = 0; |
570 | if (!unsol) | |
571 | nopout_wqe->flags = ISCSI_NOP_OUT_REQUEST_LOCAL_COMPLETION; | |
572 | else if (nopout_hdr->itt == RESERVED_ITT) | |
573 | nopout_wqe->flags = ISCSI_NOP_OUT_REQUEST_LOCAL_COMPLETION; | |
574 | ||
575 | nopout_wqe->cmd_sn = be32_to_cpu(nopout_hdr->cmdsn); | |
576 | nopout_wqe->data_length = data_len; | |
577 | if (data_len) { | |
578 | /* handle payload data, not required in first release */ | |
579 | printk(KERN_ALERT "NOPOUT: WARNING!! payload len != 0\n"); | |
580 | } else { | |
581 | nopout_wqe->bd_list_addr_lo = (u32) | |
582 | bnx2i_conn->hba->mp_bd_dma; | |
583 | nopout_wqe->bd_list_addr_hi = | |
584 | (u32) ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); | |
585 | nopout_wqe->num_bds = 1; | |
586 | } | |
587 | nopout_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ | |
588 | ||
589 | bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); | |
590 | return 0; | |
591 | } | |
592 | ||
593 | ||
594 | /** | |
595 | * bnx2i_send_iscsi_logout - post iSCSI logout request WQE to hardware | |
596 | * @conn: iscsi connection | |
597 | * @cmd: driver command structure which is requesting | |
598 | * a WQE to sent to chip for further processing | |
599 | * | |
600 | * prepare and post logout request WQE to CNIC firmware | |
601 | */ | |
602 | int bnx2i_send_iscsi_logout(struct bnx2i_conn *bnx2i_conn, | |
603 | struct iscsi_task *task) | |
604 | { | |
605 | struct bnx2i_cmd *bnx2i_cmd; | |
606 | struct bnx2i_logout_request *logout_wqe; | |
607 | struct iscsi_logout *logout_hdr; | |
608 | ||
609 | bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data; | |
610 | logout_hdr = (struct iscsi_logout *)task->hdr; | |
611 | ||
612 | logout_wqe = (struct bnx2i_logout_request *) | |
613 | bnx2i_conn->ep->qp.sq_prod_qe; | |
614 | memset(logout_wqe, 0x00, sizeof(struct bnx2i_logout_request)); | |
615 | ||
616 | logout_wqe->op_code = logout_hdr->opcode; | |
617 | logout_wqe->cmd_sn = be32_to_cpu(logout_hdr->cmdsn); | |
618 | logout_wqe->op_attr = | |
619 | logout_hdr->flags | ISCSI_LOGOUT_REQUEST_ALWAYS_ONE; | |
620 | logout_wqe->itt = ((u16)task->itt | | |
621 | (ISCSI_TASK_TYPE_MPATH << | |
622 | ISCSI_LOGOUT_REQUEST_TYPE_SHIFT)); | |
623 | logout_wqe->data_length = 0; | |
624 | logout_wqe->cid = 0; | |
625 | ||
626 | logout_wqe->bd_list_addr_lo = (u32) bnx2i_conn->hba->mp_bd_dma; | |
627 | logout_wqe->bd_list_addr_hi = (u32) | |
628 | ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); | |
629 | logout_wqe->num_bds = 1; | |
630 | logout_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ | |
631 | ||
2eefb20d EW |
632 | bnx2i_conn->ep->state = EP_STATE_LOGOUT_SENT; |
633 | ||
cf4e6363 MC |
634 | bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); |
635 | return 0; | |
636 | } | |
637 | ||
638 | ||
639 | /** | |
640 | * bnx2i_update_iscsi_conn - post iSCSI logout request WQE to hardware | |
641 | * @conn: iscsi connection which requires iscsi parameter update | |
642 | * | |
643 | * sends down iSCSI Conn Update request to move iSCSI conn to FFP | |
644 | */ | |
645 | void bnx2i_update_iscsi_conn(struct iscsi_conn *conn) | |
646 | { | |
647 | struct bnx2i_conn *bnx2i_conn = conn->dd_data; | |
648 | struct bnx2i_hba *hba = bnx2i_conn->hba; | |
649 | struct kwqe *kwqe_arr[2]; | |
650 | struct iscsi_kwqe_conn_update *update_wqe; | |
651 | struct iscsi_kwqe_conn_update conn_update_kwqe; | |
652 | ||
653 | update_wqe = &conn_update_kwqe; | |
654 | ||
655 | update_wqe->hdr.op_code = ISCSI_KWQE_OPCODE_UPDATE_CONN; | |
656 | update_wqe->hdr.flags = | |
657 | (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); | |
658 | ||
659 | /* 5771x requires conn context id to be passed as is */ | |
660 | if (test_bit(BNX2I_NX2_DEV_57710, &bnx2i_conn->ep->hba->cnic_dev_type)) | |
661 | update_wqe->context_id = bnx2i_conn->ep->ep_cid; | |
662 | else | |
663 | update_wqe->context_id = (bnx2i_conn->ep->ep_cid >> 7); | |
664 | update_wqe->conn_flags = 0; | |
665 | if (conn->hdrdgst_en) | |
666 | update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_HEADER_DIGEST; | |
667 | if (conn->datadgst_en) | |
668 | update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_DATA_DIGEST; | |
669 | if (conn->session->initial_r2t_en) | |
670 | update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_INITIAL_R2T; | |
671 | if (conn->session->imm_data_en) | |
672 | update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_IMMEDIATE_DATA; | |
673 | ||
674 | update_wqe->max_send_pdu_length = conn->max_xmit_dlength; | |
675 | update_wqe->max_recv_pdu_length = conn->max_recv_dlength; | |
676 | update_wqe->first_burst_length = conn->session->first_burst; | |
677 | update_wqe->max_burst_length = conn->session->max_burst; | |
678 | update_wqe->exp_stat_sn = conn->exp_statsn; | |
679 | update_wqe->max_outstanding_r2ts = conn->session->max_r2t; | |
680 | update_wqe->session_error_recovery_level = conn->session->erl; | |
681 | iscsi_conn_printk(KERN_ALERT, conn, | |
682 | "bnx2i: conn update - MBL 0x%x FBL 0x%x" | |
683 | "MRDSL_I 0x%x MRDSL_T 0x%x \n", | |
684 | update_wqe->max_burst_length, | |
685 | update_wqe->first_burst_length, | |
686 | update_wqe->max_recv_pdu_length, | |
687 | update_wqe->max_send_pdu_length); | |
688 | ||
689 | kwqe_arr[0] = (struct kwqe *) update_wqe; | |
690 | if (hba->cnic && hba->cnic->submit_kwqes) | |
691 | hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 1); | |
692 | } | |
693 | ||
694 | ||
695 | /** | |
696 | * bnx2i_ep_ofld_timer - post iSCSI logout request WQE to hardware | |
697 | * @data: endpoint (transport handle) structure pointer | |
698 | * | |
699 | * routine to handle connection offload/destroy request timeout | |
700 | */ | |
701 | void bnx2i_ep_ofld_timer(unsigned long data) | |
702 | { | |
703 | struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) data; | |
704 | ||
705 | if (ep->state == EP_STATE_OFLD_START) { | |
706 | printk(KERN_ALERT "ofld_timer: CONN_OFLD timeout\n"); | |
707 | ep->state = EP_STATE_OFLD_FAILED; | |
708 | } else if (ep->state == EP_STATE_DISCONN_START) { | |
709 | printk(KERN_ALERT "ofld_timer: CONN_DISCON timeout\n"); | |
710 | ep->state = EP_STATE_DISCONN_TIMEDOUT; | |
711 | } else if (ep->state == EP_STATE_CLEANUP_START) { | |
712 | printk(KERN_ALERT "ofld_timer: CONN_CLEANUP timeout\n"); | |
713 | ep->state = EP_STATE_CLEANUP_FAILED; | |
714 | } | |
715 | ||
716 | wake_up_interruptible(&ep->ofld_wait); | |
717 | } | |
718 | ||
719 | ||
720 | static int bnx2i_power_of2(u32 val) | |
721 | { | |
722 | u32 power = 0; | |
723 | if (val & (val - 1)) | |
724 | return power; | |
725 | val--; | |
726 | while (val) { | |
727 | val = val >> 1; | |
728 | power++; | |
729 | } | |
730 | return power; | |
731 | } | |
732 | ||
733 | ||
734 | /** | |
735 | * bnx2i_send_cmd_cleanup_req - send iscsi cmd context clean-up request | |
736 | * @hba: adapter structure pointer | |
737 | * @cmd: driver command structure which is requesting | |
738 | * a WQE to sent to chip for further processing | |
739 | * | |
740 | * prepares and posts CONN_OFLD_REQ1/2 KWQE | |
741 | */ | |
742 | void bnx2i_send_cmd_cleanup_req(struct bnx2i_hba *hba, struct bnx2i_cmd *cmd) | |
743 | { | |
744 | struct bnx2i_cleanup_request *cmd_cleanup; | |
745 | ||
746 | cmd_cleanup = | |
747 | (struct bnx2i_cleanup_request *)cmd->conn->ep->qp.sq_prod_qe; | |
748 | memset(cmd_cleanup, 0x00, sizeof(struct bnx2i_cleanup_request)); | |
749 | ||
750 | cmd_cleanup->op_code = ISCSI_OPCODE_CLEANUP_REQUEST; | |
751 | cmd_cleanup->itt = cmd->req.itt; | |
752 | cmd_cleanup->cq_index = 0; /* CQ# used for completion, 5771x only */ | |
753 | ||
754 | bnx2i_ring_dbell_update_sq_params(cmd->conn, 1); | |
755 | } | |
756 | ||
757 | ||
758 | /** | |
759 | * bnx2i_send_conn_destroy - initiates iscsi connection teardown process | |
760 | * @hba: adapter structure pointer | |
3f79410c | 761 | * @ep: endpoint (transport identifier) structure |
cf4e6363 MC |
762 | * |
763 | * this routine prepares and posts CONN_OFLD_REQ1/2 KWQE to initiate | |
764 | * iscsi connection context clean-up process | |
765 | */ | |
bee34877 | 766 | int bnx2i_send_conn_destroy(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) |
cf4e6363 MC |
767 | { |
768 | struct kwqe *kwqe_arr[2]; | |
769 | struct iscsi_kwqe_conn_destroy conn_cleanup; | |
bee34877 | 770 | int rc = -EINVAL; |
cf4e6363 MC |
771 | |
772 | memset(&conn_cleanup, 0x00, sizeof(struct iscsi_kwqe_conn_destroy)); | |
773 | ||
774 | conn_cleanup.hdr.op_code = ISCSI_KWQE_OPCODE_DESTROY_CONN; | |
775 | conn_cleanup.hdr.flags = | |
776 | (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); | |
777 | /* 5771x requires conn context id to be passed as is */ | |
778 | if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) | |
779 | conn_cleanup.context_id = ep->ep_cid; | |
780 | else | |
781 | conn_cleanup.context_id = (ep->ep_cid >> 7); | |
782 | ||
783 | conn_cleanup.reserved0 = (u16)ep->ep_iscsi_cid; | |
784 | ||
785 | kwqe_arr[0] = (struct kwqe *) &conn_cleanup; | |
786 | if (hba->cnic && hba->cnic->submit_kwqes) | |
bee34877 EW |
787 | rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 1); |
788 | ||
789 | return rc; | |
cf4e6363 MC |
790 | } |
791 | ||
792 | ||
793 | /** | |
794 | * bnx2i_570x_send_conn_ofld_req - initiates iscsi conn context setup process | |
795 | * @hba: adapter structure pointer | |
3f79410c | 796 | * @ep: endpoint (transport identifier) structure |
cf4e6363 MC |
797 | * |
798 | * 5706/5708/5709 specific - prepares and posts CONN_OFLD_REQ1/2 KWQE | |
799 | */ | |
bee34877 EW |
800 | static int bnx2i_570x_send_conn_ofld_req(struct bnx2i_hba *hba, |
801 | struct bnx2i_endpoint *ep) | |
cf4e6363 MC |
802 | { |
803 | struct kwqe *kwqe_arr[2]; | |
804 | struct iscsi_kwqe_conn_offload1 ofld_req1; | |
805 | struct iscsi_kwqe_conn_offload2 ofld_req2; | |
806 | dma_addr_t dma_addr; | |
807 | int num_kwqes = 2; | |
808 | u32 *ptbl; | |
bee34877 | 809 | int rc = -EINVAL; |
cf4e6363 MC |
810 | |
811 | ofld_req1.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN1; | |
812 | ofld_req1.hdr.flags = | |
813 | (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); | |
814 | ||
815 | ofld_req1.iscsi_conn_id = (u16) ep->ep_iscsi_cid; | |
816 | ||
817 | dma_addr = ep->qp.sq_pgtbl_phys; | |
818 | ofld_req1.sq_page_table_addr_lo = (u32) dma_addr; | |
819 | ofld_req1.sq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); | |
820 | ||
821 | dma_addr = ep->qp.cq_pgtbl_phys; | |
822 | ofld_req1.cq_page_table_addr_lo = (u32) dma_addr; | |
823 | ofld_req1.cq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); | |
824 | ||
825 | ofld_req2.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN2; | |
826 | ofld_req2.hdr.flags = | |
827 | (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); | |
828 | ||
829 | dma_addr = ep->qp.rq_pgtbl_phys; | |
830 | ofld_req2.rq_page_table_addr_lo = (u32) dma_addr; | |
831 | ofld_req2.rq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); | |
832 | ||
833 | ptbl = (u32 *) ep->qp.sq_pgtbl_virt; | |
834 | ||
835 | ofld_req2.sq_first_pte.hi = *ptbl++; | |
836 | ofld_req2.sq_first_pte.lo = *ptbl; | |
837 | ||
838 | ptbl = (u32 *) ep->qp.cq_pgtbl_virt; | |
839 | ofld_req2.cq_first_pte.hi = *ptbl++; | |
840 | ofld_req2.cq_first_pte.lo = *ptbl; | |
841 | ||
842 | kwqe_arr[0] = (struct kwqe *) &ofld_req1; | |
843 | kwqe_arr[1] = (struct kwqe *) &ofld_req2; | |
844 | ofld_req2.num_additional_wqes = 0; | |
845 | ||
846 | if (hba->cnic && hba->cnic->submit_kwqes) | |
bee34877 EW |
847 | rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes); |
848 | ||
849 | return rc; | |
cf4e6363 MC |
850 | } |
851 | ||
852 | ||
853 | /** | |
854 | * bnx2i_5771x_send_conn_ofld_req - initiates iscsi connection context creation | |
855 | * @hba: adapter structure pointer | |
3f79410c | 856 | * @ep: endpoint (transport identifier) structure |
cf4e6363 MC |
857 | * |
858 | * 57710 specific - prepares and posts CONN_OFLD_REQ1/2 KWQE | |
859 | */ | |
bee34877 EW |
860 | static int bnx2i_5771x_send_conn_ofld_req(struct bnx2i_hba *hba, |
861 | struct bnx2i_endpoint *ep) | |
cf4e6363 MC |
862 | { |
863 | struct kwqe *kwqe_arr[5]; | |
864 | struct iscsi_kwqe_conn_offload1 ofld_req1; | |
865 | struct iscsi_kwqe_conn_offload2 ofld_req2; | |
866 | struct iscsi_kwqe_conn_offload3 ofld_req3[1]; | |
867 | dma_addr_t dma_addr; | |
868 | int num_kwqes = 2; | |
869 | u32 *ptbl; | |
bee34877 | 870 | int rc = -EINVAL; |
cf4e6363 MC |
871 | |
872 | ofld_req1.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN1; | |
873 | ofld_req1.hdr.flags = | |
874 | (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); | |
875 | ||
876 | ofld_req1.iscsi_conn_id = (u16) ep->ep_iscsi_cid; | |
877 | ||
878 | dma_addr = ep->qp.sq_pgtbl_phys + ISCSI_SQ_DB_SIZE; | |
879 | ofld_req1.sq_page_table_addr_lo = (u32) dma_addr; | |
880 | ofld_req1.sq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); | |
881 | ||
882 | dma_addr = ep->qp.cq_pgtbl_phys + ISCSI_CQ_DB_SIZE; | |
883 | ofld_req1.cq_page_table_addr_lo = (u32) dma_addr; | |
884 | ofld_req1.cq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); | |
885 | ||
886 | ofld_req2.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN2; | |
887 | ofld_req2.hdr.flags = | |
888 | (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); | |
889 | ||
890 | dma_addr = ep->qp.rq_pgtbl_phys + ISCSI_RQ_DB_SIZE; | |
891 | ofld_req2.rq_page_table_addr_lo = (u32) dma_addr; | |
892 | ofld_req2.rq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); | |
893 | ||
894 | ptbl = (u32 *)((u8 *)ep->qp.sq_pgtbl_virt + ISCSI_SQ_DB_SIZE); | |
895 | ofld_req2.sq_first_pte.hi = *ptbl++; | |
896 | ofld_req2.sq_first_pte.lo = *ptbl; | |
897 | ||
898 | ptbl = (u32 *)((u8 *)ep->qp.cq_pgtbl_virt + ISCSI_CQ_DB_SIZE); | |
899 | ofld_req2.cq_first_pte.hi = *ptbl++; | |
900 | ofld_req2.cq_first_pte.lo = *ptbl; | |
901 | ||
902 | kwqe_arr[0] = (struct kwqe *) &ofld_req1; | |
903 | kwqe_arr[1] = (struct kwqe *) &ofld_req2; | |
904 | ||
905 | ofld_req2.num_additional_wqes = 1; | |
906 | memset(ofld_req3, 0x00, sizeof(ofld_req3[0])); | |
907 | ptbl = (u32 *)((u8 *)ep->qp.rq_pgtbl_virt + ISCSI_RQ_DB_SIZE); | |
908 | ofld_req3[0].qp_first_pte[0].hi = *ptbl++; | |
909 | ofld_req3[0].qp_first_pte[0].lo = *ptbl; | |
910 | ||
911 | kwqe_arr[2] = (struct kwqe *) ofld_req3; | |
912 | /* need if we decide to go with multiple KCQE's per conn */ | |
913 | num_kwqes += 1; | |
914 | ||
915 | if (hba->cnic && hba->cnic->submit_kwqes) | |
bee34877 EW |
916 | rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes); |
917 | ||
918 | return rc; | |
cf4e6363 MC |
919 | } |
920 | ||
921 | /** | |
922 | * bnx2i_send_conn_ofld_req - initiates iscsi connection context setup process | |
923 | * | |
924 | * @hba: adapter structure pointer | |
3f79410c | 925 | * @ep: endpoint (transport identifier) structure |
cf4e6363 MC |
926 | * |
927 | * this routine prepares and posts CONN_OFLD_REQ1/2 KWQE | |
928 | */ | |
bee34877 | 929 | int bnx2i_send_conn_ofld_req(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) |
cf4e6363 | 930 | { |
bee34877 EW |
931 | int rc; |
932 | ||
cf4e6363 | 933 | if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type)) |
bee34877 | 934 | rc = bnx2i_5771x_send_conn_ofld_req(hba, ep); |
cf4e6363 | 935 | else |
bee34877 EW |
936 | rc = bnx2i_570x_send_conn_ofld_req(hba, ep); |
937 | ||
938 | return rc; | |
cf4e6363 MC |
939 | } |
940 | ||
941 | ||
942 | /** | |
943 | * setup_qp_page_tables - iscsi QP page table setup function | |
3f79410c | 944 | * @ep: endpoint (transport identifier) structure |
cf4e6363 MC |
945 | * |
946 | * Sets up page tables for SQ/RQ/CQ, 1G/sec (5706/5708/5709) devices requires | |
947 | * 64-bit address in big endian format. Whereas 10G/sec (57710) requires | |
948 | * PT in little endian format | |
949 | */ | |
950 | static void setup_qp_page_tables(struct bnx2i_endpoint *ep) | |
951 | { | |
952 | int num_pages; | |
953 | u32 *ptbl; | |
954 | dma_addr_t page; | |
955 | int cnic_dev_10g; | |
956 | ||
957 | if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) | |
958 | cnic_dev_10g = 1; | |
959 | else | |
960 | cnic_dev_10g = 0; | |
961 | ||
962 | /* SQ page table */ | |
963 | memset(ep->qp.sq_pgtbl_virt, 0, ep->qp.sq_pgtbl_size); | |
be1fefc2 | 964 | num_pages = ep->qp.sq_mem_size / CNIC_PAGE_SIZE; |
cf4e6363 MC |
965 | page = ep->qp.sq_phys; |
966 | ||
967 | if (cnic_dev_10g) | |
968 | ptbl = (u32 *)((u8 *)ep->qp.sq_pgtbl_virt + ISCSI_SQ_DB_SIZE); | |
969 | else | |
970 | ptbl = (u32 *) ep->qp.sq_pgtbl_virt; | |
971 | while (num_pages--) { | |
972 | if (cnic_dev_10g) { | |
973 | /* PTE is written in little endian format for 57710 */ | |
974 | *ptbl = (u32) page; | |
975 | ptbl++; | |
976 | *ptbl = (u32) ((u64) page >> 32); | |
977 | ptbl++; | |
be1fefc2 | 978 | page += CNIC_PAGE_SIZE; |
cf4e6363 MC |
979 | } else { |
980 | /* PTE is written in big endian format for | |
981 | * 5706/5708/5709 devices */ | |
982 | *ptbl = (u32) ((u64) page >> 32); | |
983 | ptbl++; | |
984 | *ptbl = (u32) page; | |
985 | ptbl++; | |
be1fefc2 | 986 | page += CNIC_PAGE_SIZE; |
cf4e6363 MC |
987 | } |
988 | } | |
989 | ||
990 | /* RQ page table */ | |
991 | memset(ep->qp.rq_pgtbl_virt, 0, ep->qp.rq_pgtbl_size); | |
be1fefc2 | 992 | num_pages = ep->qp.rq_mem_size / CNIC_PAGE_SIZE; |
cf4e6363 MC |
993 | page = ep->qp.rq_phys; |
994 | ||
995 | if (cnic_dev_10g) | |
996 | ptbl = (u32 *)((u8 *)ep->qp.rq_pgtbl_virt + ISCSI_RQ_DB_SIZE); | |
997 | else | |
998 | ptbl = (u32 *) ep->qp.rq_pgtbl_virt; | |
999 | while (num_pages--) { | |
1000 | if (cnic_dev_10g) { | |
1001 | /* PTE is written in little endian format for 57710 */ | |
1002 | *ptbl = (u32) page; | |
1003 | ptbl++; | |
1004 | *ptbl = (u32) ((u64) page >> 32); | |
1005 | ptbl++; | |
be1fefc2 | 1006 | page += CNIC_PAGE_SIZE; |
cf4e6363 MC |
1007 | } else { |
1008 | /* PTE is written in big endian format for | |
1009 | * 5706/5708/5709 devices */ | |
1010 | *ptbl = (u32) ((u64) page >> 32); | |
1011 | ptbl++; | |
1012 | *ptbl = (u32) page; | |
1013 | ptbl++; | |
be1fefc2 | 1014 | page += CNIC_PAGE_SIZE; |
cf4e6363 MC |
1015 | } |
1016 | } | |
1017 | ||
1018 | /* CQ page table */ | |
1019 | memset(ep->qp.cq_pgtbl_virt, 0, ep->qp.cq_pgtbl_size); | |
be1fefc2 | 1020 | num_pages = ep->qp.cq_mem_size / CNIC_PAGE_SIZE; |
cf4e6363 MC |
1021 | page = ep->qp.cq_phys; |
1022 | ||
1023 | if (cnic_dev_10g) | |
1024 | ptbl = (u32 *)((u8 *)ep->qp.cq_pgtbl_virt + ISCSI_CQ_DB_SIZE); | |
1025 | else | |
1026 | ptbl = (u32 *) ep->qp.cq_pgtbl_virt; | |
1027 | while (num_pages--) { | |
1028 | if (cnic_dev_10g) { | |
1029 | /* PTE is written in little endian format for 57710 */ | |
1030 | *ptbl = (u32) page; | |
1031 | ptbl++; | |
1032 | *ptbl = (u32) ((u64) page >> 32); | |
1033 | ptbl++; | |
be1fefc2 | 1034 | page += CNIC_PAGE_SIZE; |
cf4e6363 MC |
1035 | } else { |
1036 | /* PTE is written in big endian format for | |
1037 | * 5706/5708/5709 devices */ | |
1038 | *ptbl = (u32) ((u64) page >> 32); | |
1039 | ptbl++; | |
1040 | *ptbl = (u32) page; | |
1041 | ptbl++; | |
be1fefc2 | 1042 | page += CNIC_PAGE_SIZE; |
cf4e6363 MC |
1043 | } |
1044 | } | |
1045 | } | |
1046 | ||
1047 | ||
1048 | /** | |
1049 | * bnx2i_alloc_qp_resc - allocates required resources for QP. | |
1050 | * @hba: adapter structure pointer | |
3f79410c | 1051 | * @ep: endpoint (transport identifier) structure |
cf4e6363 MC |
1052 | * |
1053 | * Allocate QP (transport layer for iSCSI connection) resources, DMA'able | |
1054 | * memory for SQ/RQ/CQ and page tables. EP structure elements such | |
1055 | * as producer/consumer indexes/pointers, queue sizes and page table | |
1056 | * contents are setup | |
1057 | */ | |
1058 | int bnx2i_alloc_qp_resc(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) | |
1059 | { | |
1060 | struct bnx2i_5771x_cq_db *cq_db; | |
1061 | ||
1062 | ep->hba = hba; | |
1063 | ep->conn = NULL; | |
1064 | ep->ep_cid = ep->ep_iscsi_cid = ep->ep_pg_cid = 0; | |
1065 | ||
1066 | /* Allocate page table memory for SQ which is page aligned */ | |
1067 | ep->qp.sq_mem_size = hba->max_sqes * BNX2I_SQ_WQE_SIZE; | |
1068 | ep->qp.sq_mem_size = | |
be1fefc2 | 1069 | (ep->qp.sq_mem_size + (CNIC_PAGE_SIZE - 1)) & CNIC_PAGE_MASK; |
cf4e6363 | 1070 | ep->qp.sq_pgtbl_size = |
be1fefc2 | 1071 | (ep->qp.sq_mem_size / CNIC_PAGE_SIZE) * sizeof(void *); |
cf4e6363 | 1072 | ep->qp.sq_pgtbl_size = |
be1fefc2 | 1073 | (ep->qp.sq_pgtbl_size + (CNIC_PAGE_SIZE - 1)) & CNIC_PAGE_MASK; |
cf4e6363 MC |
1074 | |
1075 | ep->qp.sq_pgtbl_virt = | |
1076 | dma_alloc_coherent(&hba->pcidev->dev, ep->qp.sq_pgtbl_size, | |
1077 | &ep->qp.sq_pgtbl_phys, GFP_KERNEL); | |
1078 | if (!ep->qp.sq_pgtbl_virt) { | |
1079 | printk(KERN_ALERT "bnx2i: unable to alloc SQ PT mem (%d)\n", | |
1080 | ep->qp.sq_pgtbl_size); | |
1081 | goto mem_alloc_err; | |
1082 | } | |
1083 | ||
1084 | /* Allocate memory area for actual SQ element */ | |
1085 | ep->qp.sq_virt = | |
1086 | dma_alloc_coherent(&hba->pcidev->dev, ep->qp.sq_mem_size, | |
1087 | &ep->qp.sq_phys, GFP_KERNEL); | |
1088 | if (!ep->qp.sq_virt) { | |
1089 | printk(KERN_ALERT "bnx2i: unable to alloc SQ BD memory %d\n", | |
1090 | ep->qp.sq_mem_size); | |
1091 | goto mem_alloc_err; | |
1092 | } | |
1093 | ||
1094 | memset(ep->qp.sq_virt, 0x00, ep->qp.sq_mem_size); | |
1095 | ep->qp.sq_first_qe = ep->qp.sq_virt; | |
1096 | ep->qp.sq_prod_qe = ep->qp.sq_first_qe; | |
1097 | ep->qp.sq_cons_qe = ep->qp.sq_first_qe; | |
1098 | ep->qp.sq_last_qe = &ep->qp.sq_first_qe[hba->max_sqes - 1]; | |
1099 | ep->qp.sq_prod_idx = 0; | |
1100 | ep->qp.sq_cons_idx = 0; | |
1101 | ep->qp.sqe_left = hba->max_sqes; | |
1102 | ||
1103 | /* Allocate page table memory for CQ which is page aligned */ | |
1104 | ep->qp.cq_mem_size = hba->max_cqes * BNX2I_CQE_SIZE; | |
1105 | ep->qp.cq_mem_size = | |
be1fefc2 | 1106 | (ep->qp.cq_mem_size + (CNIC_PAGE_SIZE - 1)) & CNIC_PAGE_MASK; |
cf4e6363 | 1107 | ep->qp.cq_pgtbl_size = |
be1fefc2 | 1108 | (ep->qp.cq_mem_size / CNIC_PAGE_SIZE) * sizeof(void *); |
cf4e6363 | 1109 | ep->qp.cq_pgtbl_size = |
be1fefc2 | 1110 | (ep->qp.cq_pgtbl_size + (CNIC_PAGE_SIZE - 1)) & CNIC_PAGE_MASK; |
cf4e6363 MC |
1111 | |
1112 | ep->qp.cq_pgtbl_virt = | |
1113 | dma_alloc_coherent(&hba->pcidev->dev, ep->qp.cq_pgtbl_size, | |
1114 | &ep->qp.cq_pgtbl_phys, GFP_KERNEL); | |
1115 | if (!ep->qp.cq_pgtbl_virt) { | |
1116 | printk(KERN_ALERT "bnx2i: unable to alloc CQ PT memory %d\n", | |
1117 | ep->qp.cq_pgtbl_size); | |
1118 | goto mem_alloc_err; | |
1119 | } | |
1120 | ||
1121 | /* Allocate memory area for actual CQ element */ | |
1122 | ep->qp.cq_virt = | |
1123 | dma_alloc_coherent(&hba->pcidev->dev, ep->qp.cq_mem_size, | |
1124 | &ep->qp.cq_phys, GFP_KERNEL); | |
1125 | if (!ep->qp.cq_virt) { | |
1126 | printk(KERN_ALERT "bnx2i: unable to alloc CQ BD memory %d\n", | |
1127 | ep->qp.cq_mem_size); | |
1128 | goto mem_alloc_err; | |
1129 | } | |
1130 | memset(ep->qp.cq_virt, 0x00, ep->qp.cq_mem_size); | |
1131 | ||
1132 | ep->qp.cq_first_qe = ep->qp.cq_virt; | |
1133 | ep->qp.cq_prod_qe = ep->qp.cq_first_qe; | |
1134 | ep->qp.cq_cons_qe = ep->qp.cq_first_qe; | |
1135 | ep->qp.cq_last_qe = &ep->qp.cq_first_qe[hba->max_cqes - 1]; | |
1136 | ep->qp.cq_prod_idx = 0; | |
1137 | ep->qp.cq_cons_idx = 0; | |
1138 | ep->qp.cqe_left = hba->max_cqes; | |
1139 | ep->qp.cqe_exp_seq_sn = ISCSI_INITIAL_SN; | |
1140 | ep->qp.cqe_size = hba->max_cqes; | |
1141 | ||
1142 | /* Invalidate all EQ CQE index, req only for 57710 */ | |
1143 | cq_db = (struct bnx2i_5771x_cq_db *) ep->qp.cq_pgtbl_virt; | |
1144 | memset(cq_db->sqn, 0xFF, sizeof(cq_db->sqn[0]) * BNX2X_MAX_CQS); | |
1145 | ||
1146 | /* Allocate page table memory for RQ which is page aligned */ | |
1147 | ep->qp.rq_mem_size = hba->max_rqes * BNX2I_RQ_WQE_SIZE; | |
1148 | ep->qp.rq_mem_size = | |
be1fefc2 | 1149 | (ep->qp.rq_mem_size + (CNIC_PAGE_SIZE - 1)) & CNIC_PAGE_MASK; |
cf4e6363 | 1150 | ep->qp.rq_pgtbl_size = |
be1fefc2 | 1151 | (ep->qp.rq_mem_size / CNIC_PAGE_SIZE) * sizeof(void *); |
cf4e6363 | 1152 | ep->qp.rq_pgtbl_size = |
be1fefc2 | 1153 | (ep->qp.rq_pgtbl_size + (CNIC_PAGE_SIZE - 1)) & CNIC_PAGE_MASK; |
cf4e6363 MC |
1154 | |
1155 | ep->qp.rq_pgtbl_virt = | |
1156 | dma_alloc_coherent(&hba->pcidev->dev, ep->qp.rq_pgtbl_size, | |
1157 | &ep->qp.rq_pgtbl_phys, GFP_KERNEL); | |
1158 | if (!ep->qp.rq_pgtbl_virt) { | |
1159 | printk(KERN_ALERT "bnx2i: unable to alloc RQ PT mem %d\n", | |
1160 | ep->qp.rq_pgtbl_size); | |
1161 | goto mem_alloc_err; | |
1162 | } | |
1163 | ||
1164 | /* Allocate memory area for actual RQ element */ | |
1165 | ep->qp.rq_virt = | |
1166 | dma_alloc_coherent(&hba->pcidev->dev, ep->qp.rq_mem_size, | |
1167 | &ep->qp.rq_phys, GFP_KERNEL); | |
1168 | if (!ep->qp.rq_virt) { | |
1169 | printk(KERN_ALERT "bnx2i: unable to alloc RQ BD memory %d\n", | |
1170 | ep->qp.rq_mem_size); | |
1171 | goto mem_alloc_err; | |
1172 | } | |
1173 | ||
1174 | ep->qp.rq_first_qe = ep->qp.rq_virt; | |
1175 | ep->qp.rq_prod_qe = ep->qp.rq_first_qe; | |
1176 | ep->qp.rq_cons_qe = ep->qp.rq_first_qe; | |
1177 | ep->qp.rq_last_qe = &ep->qp.rq_first_qe[hba->max_rqes - 1]; | |
1178 | ep->qp.rq_prod_idx = 0x8000; | |
1179 | ep->qp.rq_cons_idx = 0; | |
1180 | ep->qp.rqe_left = hba->max_rqes; | |
1181 | ||
1182 | setup_qp_page_tables(ep); | |
1183 | ||
1184 | return 0; | |
1185 | ||
1186 | mem_alloc_err: | |
1187 | bnx2i_free_qp_resc(hba, ep); | |
1188 | return -ENOMEM; | |
1189 | } | |
1190 | ||
1191 | ||
1192 | ||
1193 | /** | |
1194 | * bnx2i_free_qp_resc - free memory resources held by QP | |
1195 | * @hba: adapter structure pointer | |
3f79410c | 1196 | * @ep: endpoint (transport identifier) structure |
cf4e6363 MC |
1197 | * |
1198 | * Free QP resources - SQ/RQ/CQ memory and page tables. | |
1199 | */ | |
1200 | void bnx2i_free_qp_resc(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) | |
1201 | { | |
1202 | if (ep->qp.ctx_base) { | |
1203 | iounmap(ep->qp.ctx_base); | |
1204 | ep->qp.ctx_base = NULL; | |
1205 | } | |
1206 | /* Free SQ mem */ | |
1207 | if (ep->qp.sq_pgtbl_virt) { | |
1208 | dma_free_coherent(&hba->pcidev->dev, ep->qp.sq_pgtbl_size, | |
1209 | ep->qp.sq_pgtbl_virt, ep->qp.sq_pgtbl_phys); | |
1210 | ep->qp.sq_pgtbl_virt = NULL; | |
1211 | ep->qp.sq_pgtbl_phys = 0; | |
1212 | } | |
1213 | if (ep->qp.sq_virt) { | |
1214 | dma_free_coherent(&hba->pcidev->dev, ep->qp.sq_mem_size, | |
1215 | ep->qp.sq_virt, ep->qp.sq_phys); | |
1216 | ep->qp.sq_virt = NULL; | |
1217 | ep->qp.sq_phys = 0; | |
1218 | } | |
1219 | ||
1220 | /* Free RQ mem */ | |
1221 | if (ep->qp.rq_pgtbl_virt) { | |
1222 | dma_free_coherent(&hba->pcidev->dev, ep->qp.rq_pgtbl_size, | |
1223 | ep->qp.rq_pgtbl_virt, ep->qp.rq_pgtbl_phys); | |
1224 | ep->qp.rq_pgtbl_virt = NULL; | |
1225 | ep->qp.rq_pgtbl_phys = 0; | |
1226 | } | |
1227 | if (ep->qp.rq_virt) { | |
1228 | dma_free_coherent(&hba->pcidev->dev, ep->qp.rq_mem_size, | |
1229 | ep->qp.rq_virt, ep->qp.rq_phys); | |
1230 | ep->qp.rq_virt = NULL; | |
1231 | ep->qp.rq_phys = 0; | |
1232 | } | |
1233 | ||
1234 | /* Free CQ mem */ | |
1235 | if (ep->qp.cq_pgtbl_virt) { | |
1236 | dma_free_coherent(&hba->pcidev->dev, ep->qp.cq_pgtbl_size, | |
1237 | ep->qp.cq_pgtbl_virt, ep->qp.cq_pgtbl_phys); | |
1238 | ep->qp.cq_pgtbl_virt = NULL; | |
1239 | ep->qp.cq_pgtbl_phys = 0; | |
1240 | } | |
1241 | if (ep->qp.cq_virt) { | |
1242 | dma_free_coherent(&hba->pcidev->dev, ep->qp.cq_mem_size, | |
1243 | ep->qp.cq_virt, ep->qp.cq_phys); | |
1244 | ep->qp.cq_virt = NULL; | |
1245 | ep->qp.cq_phys = 0; | |
1246 | } | |
1247 | } | |
1248 | ||
1249 | ||
1250 | /** | |
1251 | * bnx2i_send_fw_iscsi_init_msg - initiates initial handshake with iscsi f/w | |
1252 | * @hba: adapter structure pointer | |
1253 | * | |
1254 | * Send down iscsi_init KWQEs which initiates the initial handshake with the f/w | |
1255 | * This results in iSCSi support validation and on-chip context manager | |
1256 | * initialization. Firmware completes this handshake with a CQE carrying | |
1257 | * the result of iscsi support validation. Parameter carried by | |
1258 | * iscsi init request determines the number of offloaded connection and | |
1259 | * tolerance level for iscsi protocol violation this hba/chip can support | |
1260 | */ | |
1261 | int bnx2i_send_fw_iscsi_init_msg(struct bnx2i_hba *hba) | |
1262 | { | |
1263 | struct kwqe *kwqe_arr[3]; | |
1264 | struct iscsi_kwqe_init1 iscsi_init; | |
1265 | struct iscsi_kwqe_init2 iscsi_init2; | |
1266 | int rc = 0; | |
1267 | u64 mask64; | |
1268 | ||
d6532207 EW |
1269 | memset(&iscsi_init, 0x00, sizeof(struct iscsi_kwqe_init1)); |
1270 | memset(&iscsi_init2, 0x00, sizeof(struct iscsi_kwqe_init2)); | |
1271 | ||
cf4e6363 MC |
1272 | bnx2i_adjust_qp_size(hba); |
1273 | ||
1274 | iscsi_init.flags = | |
be1fefc2 | 1275 | (CNIC_PAGE_BITS - 8) << ISCSI_KWQE_INIT1_PAGE_SIZE_SHIFT; |
cf4e6363 MC |
1276 | if (en_tcp_dack) |
1277 | iscsi_init.flags |= ISCSI_KWQE_INIT1_DELAYED_ACK_ENABLE; | |
1278 | iscsi_init.reserved0 = 0; | |
1279 | iscsi_init.num_cqs = 1; | |
1280 | iscsi_init.hdr.op_code = ISCSI_KWQE_OPCODE_INIT1; | |
1281 | iscsi_init.hdr.flags = | |
1282 | (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); | |
1283 | ||
1284 | iscsi_init.dummy_buffer_addr_lo = (u32) hba->dummy_buf_dma; | |
1285 | iscsi_init.dummy_buffer_addr_hi = | |
1286 | (u32) ((u64) hba->dummy_buf_dma >> 32); | |
1287 | ||
7287c63e | 1288 | hba->num_ccell = hba->max_sqes >> 1; |
cf4e6363 MC |
1289 | hba->ctx_ccell_tasks = |
1290 | ((hba->num_ccell & 0xFFFF) | (hba->max_sqes << 16)); | |
1291 | iscsi_init.num_ccells_per_conn = hba->num_ccell; | |
1292 | iscsi_init.num_tasks_per_conn = hba->max_sqes; | |
be1fefc2 | 1293 | iscsi_init.sq_wqes_per_page = CNIC_PAGE_SIZE / BNX2I_SQ_WQE_SIZE; |
cf4e6363 MC |
1294 | iscsi_init.sq_num_wqes = hba->max_sqes; |
1295 | iscsi_init.cq_log_wqes_per_page = | |
be1fefc2 | 1296 | (u8) bnx2i_power_of2(CNIC_PAGE_SIZE / BNX2I_CQE_SIZE); |
cf4e6363 MC |
1297 | iscsi_init.cq_num_wqes = hba->max_cqes; |
1298 | iscsi_init.cq_num_pages = (hba->max_cqes * BNX2I_CQE_SIZE + | |
be1fefc2 | 1299 | (CNIC_PAGE_SIZE - 1)) / CNIC_PAGE_SIZE; |
cf4e6363 | 1300 | iscsi_init.sq_num_pages = (hba->max_sqes * BNX2I_SQ_WQE_SIZE + |
be1fefc2 | 1301 | (CNIC_PAGE_SIZE - 1)) / CNIC_PAGE_SIZE; |
cf4e6363 MC |
1302 | iscsi_init.rq_buffer_size = BNX2I_RQ_WQE_SIZE; |
1303 | iscsi_init.rq_num_wqes = hba->max_rqes; | |
1304 | ||
1305 | ||
1306 | iscsi_init2.hdr.op_code = ISCSI_KWQE_OPCODE_INIT2; | |
1307 | iscsi_init2.hdr.flags = | |
1308 | (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); | |
1309 | iscsi_init2.max_cq_sqn = hba->max_cqes * 2 + 1; | |
1310 | mask64 = 0x0ULL; | |
1311 | mask64 |= ( | |
1312 | /* CISCO MDS */ | |
1313 | (1UL << | |
1314 | ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_NOT_RSRV) | | |
1315 | /* HP MSA1510i */ | |
1316 | (1UL << | |
1317 | ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_EXP_DATASN) | | |
1318 | /* EMC */ | |
1319 | (1ULL << ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_LUN)); | |
70fc872c | 1320 | if (error_mask1) { |
cf4e6363 | 1321 | iscsi_init2.error_bit_map[0] = error_mask1; |
d4a0d607 | 1322 | mask64 ^= (u32)(mask64); |
70fc872c EW |
1323 | mask64 |= error_mask1; |
1324 | } else | |
cf4e6363 MC |
1325 | iscsi_init2.error_bit_map[0] = (u32) mask64; |
1326 | ||
70fc872c | 1327 | if (error_mask2) { |
cf4e6363 | 1328 | iscsi_init2.error_bit_map[1] = error_mask2; |
70fc872c EW |
1329 | mask64 &= 0xffffffff; |
1330 | mask64 |= ((u64)error_mask2 << 32); | |
1331 | } else | |
cf4e6363 MC |
1332 | iscsi_init2.error_bit_map[1] = (u32) (mask64 >> 32); |
1333 | ||
1334 | iscsi_error_mask = mask64; | |
1335 | ||
1336 | kwqe_arr[0] = (struct kwqe *) &iscsi_init; | |
1337 | kwqe_arr[1] = (struct kwqe *) &iscsi_init2; | |
1338 | ||
1339 | if (hba->cnic && hba->cnic->submit_kwqes) | |
1340 | rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 2); | |
1341 | return rc; | |
1342 | } | |
1343 | ||
1344 | ||
1345 | /** | |
1346 | * bnx2i_process_scsi_cmd_resp - this function handles scsi cmd completion. | |
b5cf6b63 EW |
1347 | * @session: iscsi session |
1348 | * @bnx2i_conn: bnx2i connection | |
cf4e6363 MC |
1349 | * @cqe: pointer to newly DMA'ed CQE entry for processing |
1350 | * | |
1351 | * process SCSI CMD Response CQE & complete the request to SCSI-ML | |
1352 | */ | |
b5cf6b63 EW |
1353 | int bnx2i_process_scsi_cmd_resp(struct iscsi_session *session, |
1354 | struct bnx2i_conn *bnx2i_conn, | |
1355 | struct cqe *cqe) | |
cf4e6363 MC |
1356 | { |
1357 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
2e499d3c | 1358 | struct bnx2i_hba *hba = bnx2i_conn->hba; |
cf4e6363 MC |
1359 | struct bnx2i_cmd_response *resp_cqe; |
1360 | struct bnx2i_cmd *bnx2i_cmd; | |
1361 | struct iscsi_task *task; | |
12352183 | 1362 | struct iscsi_scsi_rsp *hdr; |
cf4e6363 MC |
1363 | u32 datalen = 0; |
1364 | ||
1365 | resp_cqe = (struct bnx2i_cmd_response *)cqe; | |
659743b0 | 1366 | spin_lock_bh(&session->back_lock); |
cf4e6363 MC |
1367 | task = iscsi_itt_to_task(conn, |
1368 | resp_cqe->itt & ISCSI_CMD_RESPONSE_INDEX); | |
1369 | if (!task) | |
1370 | goto fail; | |
1371 | ||
1372 | bnx2i_cmd = task->dd_data; | |
1373 | ||
1374 | if (bnx2i_cmd->req.op_attr & ISCSI_CMD_REQUEST_READ) { | |
1375 | conn->datain_pdus_cnt += | |
2e499d3c | 1376 | resp_cqe->task_stat.read_stat.num_data_ins; |
cf4e6363 MC |
1377 | conn->rxdata_octets += |
1378 | bnx2i_cmd->req.total_data_transfer_length; | |
2e499d3c BW |
1379 | ADD_STATS_64(hba, rx_pdus, |
1380 | resp_cqe->task_stat.read_stat.num_data_ins); | |
1381 | ADD_STATS_64(hba, rx_bytes, | |
1382 | bnx2i_cmd->req.total_data_transfer_length); | |
cf4e6363 MC |
1383 | } else { |
1384 | conn->dataout_pdus_cnt += | |
2e499d3c | 1385 | resp_cqe->task_stat.write_stat.num_data_outs; |
cf4e6363 | 1386 | conn->r2t_pdus_cnt += |
2e499d3c | 1387 | resp_cqe->task_stat.write_stat.num_r2ts; |
cf4e6363 MC |
1388 | conn->txdata_octets += |
1389 | bnx2i_cmd->req.total_data_transfer_length; | |
2e499d3c BW |
1390 | ADD_STATS_64(hba, tx_pdus, |
1391 | resp_cqe->task_stat.write_stat.num_data_outs); | |
1392 | ADD_STATS_64(hba, tx_bytes, | |
1393 | bnx2i_cmd->req.total_data_transfer_length); | |
1394 | ADD_STATS_64(hba, rx_pdus, | |
1395 | resp_cqe->task_stat.write_stat.num_r2ts); | |
cf4e6363 MC |
1396 | } |
1397 | bnx2i_iscsi_unmap_sg_list(bnx2i_cmd); | |
1398 | ||
12352183 | 1399 | hdr = (struct iscsi_scsi_rsp *)task->hdr; |
cf4e6363 MC |
1400 | resp_cqe = (struct bnx2i_cmd_response *)cqe; |
1401 | hdr->opcode = resp_cqe->op_code; | |
1402 | hdr->max_cmdsn = cpu_to_be32(resp_cqe->max_cmd_sn); | |
1403 | hdr->exp_cmdsn = cpu_to_be32(resp_cqe->exp_cmd_sn); | |
1404 | hdr->response = resp_cqe->response; | |
1405 | hdr->cmd_status = resp_cqe->status; | |
1406 | hdr->flags = resp_cqe->response_flags; | |
1407 | hdr->residual_count = cpu_to_be32(resp_cqe->residual_count); | |
1408 | ||
1409 | if (resp_cqe->op_code == ISCSI_OP_SCSI_DATA_IN) | |
1410 | goto done; | |
1411 | ||
1412 | if (resp_cqe->status == SAM_STAT_CHECK_CONDITION) { | |
1413 | datalen = resp_cqe->data_length; | |
1414 | if (datalen < 2) | |
1415 | goto done; | |
1416 | ||
1417 | if (datalen > BNX2I_RQ_WQE_SIZE) { | |
1418 | iscsi_conn_printk(KERN_ERR, conn, | |
1419 | "sense data len %d > RQ sz\n", | |
1420 | datalen); | |
1421 | datalen = BNX2I_RQ_WQE_SIZE; | |
1422 | } else if (datalen > ISCSI_DEF_MAX_RECV_SEG_LEN) { | |
1423 | iscsi_conn_printk(KERN_ERR, conn, | |
1424 | "sense data len %d > conn data\n", | |
1425 | datalen); | |
1426 | datalen = ISCSI_DEF_MAX_RECV_SEG_LEN; | |
1427 | } | |
1428 | ||
1429 | bnx2i_get_rq_buf(bnx2i_cmd->conn, conn->data, datalen); | |
1430 | bnx2i_put_rq_buf(bnx2i_cmd->conn, 1); | |
1431 | } | |
1432 | ||
1433 | done: | |
1434 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, | |
1435 | conn->data, datalen); | |
1436 | fail: | |
659743b0 | 1437 | spin_unlock_bh(&session->back_lock); |
cf4e6363 MC |
1438 | return 0; |
1439 | } | |
1440 | ||
1441 | ||
1442 | /** | |
1443 | * bnx2i_process_login_resp - this function handles iscsi login response | |
1444 | * @session: iscsi session pointer | |
1445 | * @bnx2i_conn: iscsi connection pointer | |
1446 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1447 | * | |
1448 | * process Login Response CQE & complete it to open-iscsi user daemon | |
1449 | */ | |
1450 | static int bnx2i_process_login_resp(struct iscsi_session *session, | |
1451 | struct bnx2i_conn *bnx2i_conn, | |
1452 | struct cqe *cqe) | |
1453 | { | |
1454 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1455 | struct iscsi_task *task; | |
1456 | struct bnx2i_login_response *login; | |
1457 | struct iscsi_login_rsp *resp_hdr; | |
1458 | int pld_len; | |
1459 | int pad_len; | |
1460 | ||
1461 | login = (struct bnx2i_login_response *) cqe; | |
659743b0 | 1462 | spin_lock(&session->back_lock); |
cf4e6363 MC |
1463 | task = iscsi_itt_to_task(conn, |
1464 | login->itt & ISCSI_LOGIN_RESPONSE_INDEX); | |
1465 | if (!task) | |
1466 | goto done; | |
1467 | ||
1468 | resp_hdr = (struct iscsi_login_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; | |
1469 | memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); | |
1470 | resp_hdr->opcode = login->op_code; | |
1471 | resp_hdr->flags = login->response_flags; | |
1472 | resp_hdr->max_version = login->version_max; | |
a419aef8 | 1473 | resp_hdr->active_version = login->version_active; |
cf4e6363 MC |
1474 | resp_hdr->hlength = 0; |
1475 | ||
1476 | hton24(resp_hdr->dlength, login->data_length); | |
1477 | memcpy(resp_hdr->isid, &login->isid_lo, 6); | |
1478 | resp_hdr->tsih = cpu_to_be16(login->tsih); | |
1479 | resp_hdr->itt = task->hdr->itt; | |
1480 | resp_hdr->statsn = cpu_to_be32(login->stat_sn); | |
1481 | resp_hdr->exp_cmdsn = cpu_to_be32(login->exp_cmd_sn); | |
1482 | resp_hdr->max_cmdsn = cpu_to_be32(login->max_cmd_sn); | |
1483 | resp_hdr->status_class = login->status_class; | |
1484 | resp_hdr->status_detail = login->status_detail; | |
1485 | pld_len = login->data_length; | |
1486 | bnx2i_conn->gen_pdu.resp_wr_ptr = | |
1487 | bnx2i_conn->gen_pdu.resp_buf + pld_len; | |
1488 | ||
1489 | pad_len = 0; | |
1490 | if (pld_len & 0x3) | |
1491 | pad_len = 4 - (pld_len % 4); | |
1492 | ||
1493 | if (pad_len) { | |
1494 | int i = 0; | |
1495 | for (i = 0; i < pad_len; i++) { | |
1496 | bnx2i_conn->gen_pdu.resp_wr_ptr[0] = 0; | |
1497 | bnx2i_conn->gen_pdu.resp_wr_ptr++; | |
1498 | } | |
1499 | } | |
1500 | ||
1501 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, | |
1502 | bnx2i_conn->gen_pdu.resp_buf, | |
1503 | bnx2i_conn->gen_pdu.resp_wr_ptr - bnx2i_conn->gen_pdu.resp_buf); | |
1504 | done: | |
659743b0 | 1505 | spin_unlock(&session->back_lock); |
cf4e6363 MC |
1506 | return 0; |
1507 | } | |
1508 | ||
09813ba5 EW |
1509 | |
1510 | /** | |
1511 | * bnx2i_process_text_resp - this function handles iscsi text response | |
1512 | * @session: iscsi session pointer | |
1513 | * @bnx2i_conn: iscsi connection pointer | |
1514 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1515 | * | |
1516 | * process iSCSI Text Response CQE& complete it to open-iscsi user daemon | |
1517 | */ | |
1518 | static int bnx2i_process_text_resp(struct iscsi_session *session, | |
1519 | struct bnx2i_conn *bnx2i_conn, | |
1520 | struct cqe *cqe) | |
1521 | { | |
1522 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1523 | struct iscsi_task *task; | |
1524 | struct bnx2i_text_response *text; | |
1525 | struct iscsi_text_rsp *resp_hdr; | |
1526 | int pld_len; | |
1527 | int pad_len; | |
1528 | ||
1529 | text = (struct bnx2i_text_response *) cqe; | |
659743b0 | 1530 | spin_lock(&session->back_lock); |
09813ba5 EW |
1531 | task = iscsi_itt_to_task(conn, text->itt & ISCSI_LOGIN_RESPONSE_INDEX); |
1532 | if (!task) | |
1533 | goto done; | |
1534 | ||
1535 | resp_hdr = (struct iscsi_text_rsp *)&bnx2i_conn->gen_pdu.resp_hdr; | |
1536 | memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); | |
1537 | resp_hdr->opcode = text->op_code; | |
1538 | resp_hdr->flags = text->response_flags; | |
1539 | resp_hdr->hlength = 0; | |
1540 | ||
1541 | hton24(resp_hdr->dlength, text->data_length); | |
1542 | resp_hdr->itt = task->hdr->itt; | |
1543 | resp_hdr->ttt = cpu_to_be32(text->ttt); | |
1544 | resp_hdr->statsn = task->hdr->exp_statsn; | |
1545 | resp_hdr->exp_cmdsn = cpu_to_be32(text->exp_cmd_sn); | |
1546 | resp_hdr->max_cmdsn = cpu_to_be32(text->max_cmd_sn); | |
1547 | pld_len = text->data_length; | |
1548 | bnx2i_conn->gen_pdu.resp_wr_ptr = bnx2i_conn->gen_pdu.resp_buf + | |
1549 | pld_len; | |
1550 | pad_len = 0; | |
1551 | if (pld_len & 0x3) | |
1552 | pad_len = 4 - (pld_len % 4); | |
1553 | ||
1554 | if (pad_len) { | |
1555 | int i = 0; | |
1556 | for (i = 0; i < pad_len; i++) { | |
1557 | bnx2i_conn->gen_pdu.resp_wr_ptr[0] = 0; | |
1558 | bnx2i_conn->gen_pdu.resp_wr_ptr++; | |
1559 | } | |
1560 | } | |
1561 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, | |
1562 | bnx2i_conn->gen_pdu.resp_buf, | |
1563 | bnx2i_conn->gen_pdu.resp_wr_ptr - | |
1564 | bnx2i_conn->gen_pdu.resp_buf); | |
1565 | done: | |
659743b0 | 1566 | spin_unlock(&session->back_lock); |
09813ba5 EW |
1567 | return 0; |
1568 | } | |
1569 | ||
1570 | ||
cf4e6363 MC |
1571 | /** |
1572 | * bnx2i_process_tmf_resp - this function handles iscsi TMF response | |
1573 | * @session: iscsi session pointer | |
1574 | * @bnx2i_conn: iscsi connection pointer | |
1575 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1576 | * | |
1577 | * process iSCSI TMF Response CQE and wake up the driver eh thread. | |
1578 | */ | |
1579 | static int bnx2i_process_tmf_resp(struct iscsi_session *session, | |
1580 | struct bnx2i_conn *bnx2i_conn, | |
1581 | struct cqe *cqe) | |
1582 | { | |
1583 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1584 | struct iscsi_task *task; | |
1585 | struct bnx2i_tmf_response *tmf_cqe; | |
1586 | struct iscsi_tm_rsp *resp_hdr; | |
1587 | ||
1588 | tmf_cqe = (struct bnx2i_tmf_response *)cqe; | |
659743b0 | 1589 | spin_lock(&session->back_lock); |
cf4e6363 MC |
1590 | task = iscsi_itt_to_task(conn, |
1591 | tmf_cqe->itt & ISCSI_TMF_RESPONSE_INDEX); | |
1592 | if (!task) | |
1593 | goto done; | |
1594 | ||
1595 | resp_hdr = (struct iscsi_tm_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; | |
1596 | memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); | |
1597 | resp_hdr->opcode = tmf_cqe->op_code; | |
1598 | resp_hdr->max_cmdsn = cpu_to_be32(tmf_cqe->max_cmd_sn); | |
1599 | resp_hdr->exp_cmdsn = cpu_to_be32(tmf_cqe->exp_cmd_sn); | |
1600 | resp_hdr->itt = task->hdr->itt; | |
1601 | resp_hdr->response = tmf_cqe->response; | |
1602 | ||
1603 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0); | |
1604 | done: | |
659743b0 | 1605 | spin_unlock(&session->back_lock); |
cf4e6363 MC |
1606 | return 0; |
1607 | } | |
1608 | ||
1609 | /** | |
1610 | * bnx2i_process_logout_resp - this function handles iscsi logout response | |
1611 | * @session: iscsi session pointer | |
1612 | * @bnx2i_conn: iscsi connection pointer | |
1613 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1614 | * | |
1615 | * process iSCSI Logout Response CQE & make function call to | |
1616 | * notify the user daemon. | |
1617 | */ | |
1618 | static int bnx2i_process_logout_resp(struct iscsi_session *session, | |
1619 | struct bnx2i_conn *bnx2i_conn, | |
1620 | struct cqe *cqe) | |
1621 | { | |
1622 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1623 | struct iscsi_task *task; | |
1624 | struct bnx2i_logout_response *logout; | |
1625 | struct iscsi_logout_rsp *resp_hdr; | |
1626 | ||
1627 | logout = (struct bnx2i_logout_response *) cqe; | |
659743b0 | 1628 | spin_lock(&session->back_lock); |
cf4e6363 MC |
1629 | task = iscsi_itt_to_task(conn, |
1630 | logout->itt & ISCSI_LOGOUT_RESPONSE_INDEX); | |
1631 | if (!task) | |
1632 | goto done; | |
1633 | ||
1634 | resp_hdr = (struct iscsi_logout_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; | |
1635 | memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); | |
1636 | resp_hdr->opcode = logout->op_code; | |
1637 | resp_hdr->flags = logout->response; | |
1638 | resp_hdr->hlength = 0; | |
1639 | ||
1640 | resp_hdr->itt = task->hdr->itt; | |
1641 | resp_hdr->statsn = task->hdr->exp_statsn; | |
1642 | resp_hdr->exp_cmdsn = cpu_to_be32(logout->exp_cmd_sn); | |
1643 | resp_hdr->max_cmdsn = cpu_to_be32(logout->max_cmd_sn); | |
1644 | ||
1645 | resp_hdr->t2wait = cpu_to_be32(logout->time_to_wait); | |
1646 | resp_hdr->t2retain = cpu_to_be32(logout->time_to_retain); | |
1647 | ||
1648 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0); | |
2eefb20d EW |
1649 | |
1650 | bnx2i_conn->ep->state = EP_STATE_LOGOUT_RESP_RCVD; | |
cf4e6363 | 1651 | done: |
659743b0 | 1652 | spin_unlock(&session->back_lock); |
cf4e6363 MC |
1653 | return 0; |
1654 | } | |
1655 | ||
1656 | /** | |
1657 | * bnx2i_process_nopin_local_cmpl - this function handles iscsi nopin CQE | |
1658 | * @session: iscsi session pointer | |
1659 | * @bnx2i_conn: iscsi connection pointer | |
1660 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1661 | * | |
1662 | * process iSCSI NOPIN local completion CQE, frees IIT and command structures | |
1663 | */ | |
1664 | static void bnx2i_process_nopin_local_cmpl(struct iscsi_session *session, | |
1665 | struct bnx2i_conn *bnx2i_conn, | |
1666 | struct cqe *cqe) | |
1667 | { | |
1668 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1669 | struct bnx2i_nop_in_msg *nop_in; | |
1670 | struct iscsi_task *task; | |
1671 | ||
1672 | nop_in = (struct bnx2i_nop_in_msg *)cqe; | |
659743b0 | 1673 | spin_lock(&session->back_lock); |
cf4e6363 MC |
1674 | task = iscsi_itt_to_task(conn, |
1675 | nop_in->itt & ISCSI_NOP_IN_MSG_INDEX); | |
1676 | if (task) | |
8eea2f55 | 1677 | __iscsi_put_task(task); |
659743b0 | 1678 | spin_unlock(&session->back_lock); |
cf4e6363 MC |
1679 | } |
1680 | ||
1681 | /** | |
1682 | * bnx2i_unsol_pdu_adjust_rq - makes adjustments to RQ after unsol pdu is recvd | |
1683 | * @conn: iscsi connection | |
1684 | * | |
1685 | * Firmware advances RQ producer index for every unsolicited PDU even if | |
1686 | * payload data length is '0'. This function makes corresponding | |
1687 | * adjustments on the driver side to match this f/w behavior | |
1688 | */ | |
1689 | static void bnx2i_unsol_pdu_adjust_rq(struct bnx2i_conn *bnx2i_conn) | |
1690 | { | |
1691 | char dummy_rq_data[2]; | |
1692 | bnx2i_get_rq_buf(bnx2i_conn, dummy_rq_data, 1); | |
1693 | bnx2i_put_rq_buf(bnx2i_conn, 1); | |
1694 | } | |
1695 | ||
1696 | ||
1697 | /** | |
1698 | * bnx2i_process_nopin_mesg - this function handles iscsi nopin CQE | |
1699 | * @session: iscsi session pointer | |
1700 | * @bnx2i_conn: iscsi connection pointer | |
1701 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1702 | * | |
1703 | * process iSCSI target's proactive iSCSI NOPIN request | |
1704 | */ | |
1705 | static int bnx2i_process_nopin_mesg(struct iscsi_session *session, | |
1706 | struct bnx2i_conn *bnx2i_conn, | |
1707 | struct cqe *cqe) | |
1708 | { | |
1709 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1710 | struct iscsi_task *task; | |
1711 | struct bnx2i_nop_in_msg *nop_in; | |
1712 | struct iscsi_nopin *hdr; | |
cf4e6363 MC |
1713 | int tgt_async_nop = 0; |
1714 | ||
1715 | nop_in = (struct bnx2i_nop_in_msg *)cqe; | |
cf4e6363 | 1716 | |
659743b0 | 1717 | spin_lock(&session->back_lock); |
cf4e6363 MC |
1718 | hdr = (struct iscsi_nopin *)&bnx2i_conn->gen_pdu.resp_hdr; |
1719 | memset(hdr, 0, sizeof(struct iscsi_hdr)); | |
1720 | hdr->opcode = nop_in->op_code; | |
1721 | hdr->max_cmdsn = cpu_to_be32(nop_in->max_cmd_sn); | |
1722 | hdr->exp_cmdsn = cpu_to_be32(nop_in->exp_cmd_sn); | |
1723 | hdr->ttt = cpu_to_be32(nop_in->ttt); | |
1724 | ||
5ee32576 | 1725 | if (nop_in->itt == (u16) RESERVED_ITT) { |
cf4e6363 MC |
1726 | bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); |
1727 | hdr->itt = RESERVED_ITT; | |
1728 | tgt_async_nop = 1; | |
1729 | goto done; | |
1730 | } | |
1731 | ||
1732 | /* this is a response to one of our nop-outs */ | |
5ee32576 EW |
1733 | task = iscsi_itt_to_task(conn, |
1734 | (itt_t) (nop_in->itt & ISCSI_NOP_IN_MSG_INDEX)); | |
cf4e6363 MC |
1735 | if (task) { |
1736 | hdr->flags = ISCSI_FLAG_CMD_FINAL; | |
1737 | hdr->itt = task->hdr->itt; | |
1738 | hdr->ttt = cpu_to_be32(nop_in->ttt); | |
516f43a2 | 1739 | memcpy(&hdr->lun, nop_in->lun, 8); |
cf4e6363 MC |
1740 | } |
1741 | done: | |
1742 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0); | |
659743b0 | 1743 | spin_unlock(&session->back_lock); |
cf4e6363 MC |
1744 | |
1745 | return tgt_async_nop; | |
1746 | } | |
1747 | ||
1748 | ||
1749 | /** | |
1750 | * bnx2i_process_async_mesg - this function handles iscsi async message | |
1751 | * @session: iscsi session pointer | |
1752 | * @bnx2i_conn: iscsi connection pointer | |
1753 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1754 | * | |
1755 | * process iSCSI ASYNC Message | |
1756 | */ | |
1757 | static void bnx2i_process_async_mesg(struct iscsi_session *session, | |
1758 | struct bnx2i_conn *bnx2i_conn, | |
1759 | struct cqe *cqe) | |
1760 | { | |
1761 | struct bnx2i_async_msg *async_cqe; | |
1762 | struct iscsi_async *resp_hdr; | |
1763 | u8 async_event; | |
1764 | ||
1765 | bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); | |
1766 | ||
1767 | async_cqe = (struct bnx2i_async_msg *)cqe; | |
1768 | async_event = async_cqe->async_event; | |
1769 | ||
1770 | if (async_event == ISCSI_ASYNC_MSG_SCSI_EVENT) { | |
1771 | iscsi_conn_printk(KERN_ALERT, bnx2i_conn->cls_conn->dd_data, | |
1772 | "async: scsi events not supported\n"); | |
1773 | return; | |
1774 | } | |
1775 | ||
659743b0 | 1776 | spin_lock(&session->back_lock); |
cf4e6363 MC |
1777 | resp_hdr = (struct iscsi_async *) &bnx2i_conn->gen_pdu.resp_hdr; |
1778 | memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); | |
1779 | resp_hdr->opcode = async_cqe->op_code; | |
1780 | resp_hdr->flags = 0x80; | |
1781 | ||
516f43a2 | 1782 | memcpy(&resp_hdr->lun, async_cqe->lun, 8); |
cf4e6363 MC |
1783 | resp_hdr->exp_cmdsn = cpu_to_be32(async_cqe->exp_cmd_sn); |
1784 | resp_hdr->max_cmdsn = cpu_to_be32(async_cqe->max_cmd_sn); | |
1785 | ||
1786 | resp_hdr->async_event = async_cqe->async_event; | |
1787 | resp_hdr->async_vcode = async_cqe->async_vcode; | |
1788 | ||
1789 | resp_hdr->param1 = cpu_to_be16(async_cqe->param1); | |
1790 | resp_hdr->param2 = cpu_to_be16(async_cqe->param2); | |
1791 | resp_hdr->param3 = cpu_to_be16(async_cqe->param3); | |
1792 | ||
1793 | __iscsi_complete_pdu(bnx2i_conn->cls_conn->dd_data, | |
1794 | (struct iscsi_hdr *)resp_hdr, NULL, 0); | |
659743b0 | 1795 | spin_unlock(&session->back_lock); |
cf4e6363 MC |
1796 | } |
1797 | ||
1798 | ||
1799 | /** | |
1800 | * bnx2i_process_reject_mesg - process iscsi reject pdu | |
1801 | * @session: iscsi session pointer | |
1802 | * @bnx2i_conn: iscsi connection pointer | |
1803 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1804 | * | |
1805 | * process iSCSI REJECT message | |
1806 | */ | |
1807 | static void bnx2i_process_reject_mesg(struct iscsi_session *session, | |
1808 | struct bnx2i_conn *bnx2i_conn, | |
1809 | struct cqe *cqe) | |
1810 | { | |
1811 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1812 | struct bnx2i_reject_msg *reject; | |
1813 | struct iscsi_reject *hdr; | |
1814 | ||
1815 | reject = (struct bnx2i_reject_msg *) cqe; | |
1816 | if (reject->data_length) { | |
1817 | bnx2i_get_rq_buf(bnx2i_conn, conn->data, reject->data_length); | |
1818 | bnx2i_put_rq_buf(bnx2i_conn, 1); | |
1819 | } else | |
1820 | bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); | |
1821 | ||
659743b0 | 1822 | spin_lock(&session->back_lock); |
cf4e6363 MC |
1823 | hdr = (struct iscsi_reject *) &bnx2i_conn->gen_pdu.resp_hdr; |
1824 | memset(hdr, 0, sizeof(struct iscsi_hdr)); | |
1825 | hdr->opcode = reject->op_code; | |
1826 | hdr->reason = reject->reason; | |
1827 | hton24(hdr->dlength, reject->data_length); | |
1828 | hdr->max_cmdsn = cpu_to_be32(reject->max_cmd_sn); | |
1829 | hdr->exp_cmdsn = cpu_to_be32(reject->exp_cmd_sn); | |
1830 | hdr->ffffffff = cpu_to_be32(RESERVED_ITT); | |
1831 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, conn->data, | |
1832 | reject->data_length); | |
659743b0 | 1833 | spin_unlock(&session->back_lock); |
cf4e6363 MC |
1834 | } |
1835 | ||
1836 | /** | |
1837 | * bnx2i_process_cmd_cleanup_resp - process scsi command clean-up completion | |
1838 | * @session: iscsi session pointer | |
1839 | * @bnx2i_conn: iscsi connection pointer | |
1840 | * @cqe: pointer to newly DMA'ed CQE entry for processing | |
1841 | * | |
1842 | * process command cleanup response CQE during conn shutdown or error recovery | |
1843 | */ | |
1844 | static void bnx2i_process_cmd_cleanup_resp(struct iscsi_session *session, | |
1845 | struct bnx2i_conn *bnx2i_conn, | |
1846 | struct cqe *cqe) | |
1847 | { | |
1848 | struct bnx2i_cleanup_response *cmd_clean_rsp; | |
1849 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1850 | struct iscsi_task *task; | |
1851 | ||
1852 | cmd_clean_rsp = (struct bnx2i_cleanup_response *)cqe; | |
659743b0 | 1853 | spin_lock(&session->back_lock); |
cf4e6363 MC |
1854 | task = iscsi_itt_to_task(conn, |
1855 | cmd_clean_rsp->itt & ISCSI_CLEANUP_RESPONSE_INDEX); | |
1856 | if (!task) | |
1857 | printk(KERN_ALERT "bnx2i: cmd clean ITT %x not active\n", | |
1858 | cmd_clean_rsp->itt & ISCSI_CLEANUP_RESPONSE_INDEX); | |
659743b0 | 1859 | spin_unlock(&session->back_lock); |
cf4e6363 MC |
1860 | complete(&bnx2i_conn->cmd_cleanup_cmpl); |
1861 | } | |
1862 | ||
1863 | ||
b5cf6b63 EW |
1864 | /** |
1865 | * bnx2i_percpu_io_thread - thread per cpu for ios | |
1866 | * | |
1867 | * @arg: ptr to bnx2i_percpu_info structure | |
1868 | */ | |
1869 | int bnx2i_percpu_io_thread(void *arg) | |
1870 | { | |
1871 | struct bnx2i_percpu_s *p = arg; | |
1872 | struct bnx2i_work *work, *tmp; | |
1873 | LIST_HEAD(work_list); | |
1874 | ||
8698a745 | 1875 | set_user_nice(current, MIN_NICE); |
b5cf6b63 EW |
1876 | |
1877 | while (!kthread_should_stop()) { | |
1878 | spin_lock_bh(&p->p_work_lock); | |
1879 | while (!list_empty(&p->work_list)) { | |
1880 | list_splice_init(&p->work_list, &work_list); | |
1881 | spin_unlock_bh(&p->p_work_lock); | |
1882 | ||
1883 | list_for_each_entry_safe(work, tmp, &work_list, list) { | |
1884 | list_del_init(&work->list); | |
1885 | /* work allocated in the bh, freed here */ | |
1886 | bnx2i_process_scsi_cmd_resp(work->session, | |
1887 | work->bnx2i_conn, | |
1888 | &work->cqe); | |
1889 | atomic_dec(&work->bnx2i_conn->work_cnt); | |
1890 | kfree(work); | |
1891 | } | |
1892 | spin_lock_bh(&p->p_work_lock); | |
1893 | } | |
1894 | set_current_state(TASK_INTERRUPTIBLE); | |
1895 | spin_unlock_bh(&p->p_work_lock); | |
1896 | schedule(); | |
1897 | } | |
1898 | __set_current_state(TASK_RUNNING); | |
1899 | ||
1900 | return 0; | |
1901 | } | |
1902 | ||
1903 | ||
1904 | /** | |
1905 | * bnx2i_queue_scsi_cmd_resp - queue cmd completion to the percpu thread | |
1906 | * @bnx2i_conn: bnx2i connection | |
1907 | * | |
1908 | * this function is called by generic KCQ handler to queue all pending cmd | |
1909 | * completion CQEs | |
1910 | * | |
1911 | * The implementation is to queue the cmd response based on the | |
1912 | * last recorded command for the given connection. The | |
1913 | * cpu_id gets recorded upon task_xmit. No out-of-order completion! | |
1914 | */ | |
1915 | static int bnx2i_queue_scsi_cmd_resp(struct iscsi_session *session, | |
1916 | struct bnx2i_conn *bnx2i_conn, | |
1917 | struct bnx2i_nop_in_msg *cqe) | |
1918 | { | |
1919 | struct bnx2i_work *bnx2i_work = NULL; | |
1920 | struct bnx2i_percpu_s *p = NULL; | |
1921 | struct iscsi_task *task; | |
1922 | struct scsi_cmnd *sc; | |
1923 | int rc = 0; | |
0d83ab65 | 1924 | int cpu; |
b5cf6b63 | 1925 | |
659743b0 | 1926 | spin_lock(&session->back_lock); |
b5cf6b63 EW |
1927 | task = iscsi_itt_to_task(bnx2i_conn->cls_conn->dd_data, |
1928 | cqe->itt & ISCSI_CMD_RESPONSE_INDEX); | |
a878185c | 1929 | if (!task || !task->sc) { |
659743b0 | 1930 | spin_unlock(&session->back_lock); |
b5cf6b63 EW |
1931 | return -EINVAL; |
1932 | } | |
1933 | sc = task->sc; | |
b5cf6b63 | 1934 | |
0d83ab65 EW |
1935 | if (!blk_rq_cpu_valid(sc->request)) |
1936 | cpu = smp_processor_id(); | |
1937 | else | |
1938 | cpu = sc->request->cpu; | |
1939 | ||
659743b0 | 1940 | spin_unlock(&session->back_lock); |
a878185c | 1941 | |
0d83ab65 | 1942 | p = &per_cpu(bnx2i_percpu, cpu); |
b5cf6b63 EW |
1943 | spin_lock(&p->p_work_lock); |
1944 | if (unlikely(!p->iothread)) { | |
1945 | rc = -EINVAL; | |
1946 | goto err; | |
1947 | } | |
1948 | /* Alloc and copy to the cqe */ | |
1949 | bnx2i_work = kzalloc(sizeof(struct bnx2i_work), GFP_ATOMIC); | |
1950 | if (bnx2i_work) { | |
1951 | INIT_LIST_HEAD(&bnx2i_work->list); | |
1952 | bnx2i_work->session = session; | |
1953 | bnx2i_work->bnx2i_conn = bnx2i_conn; | |
1954 | memcpy(&bnx2i_work->cqe, cqe, sizeof(struct cqe)); | |
1955 | list_add_tail(&bnx2i_work->list, &p->work_list); | |
1956 | atomic_inc(&bnx2i_conn->work_cnt); | |
1957 | wake_up_process(p->iothread); | |
1958 | spin_unlock(&p->p_work_lock); | |
1959 | goto done; | |
1960 | } else | |
1961 | rc = -ENOMEM; | |
1962 | err: | |
1963 | spin_unlock(&p->p_work_lock); | |
1964 | bnx2i_process_scsi_cmd_resp(session, bnx2i_conn, (struct cqe *)cqe); | |
1965 | done: | |
1966 | return rc; | |
1967 | } | |
1968 | ||
cf4e6363 MC |
1969 | |
1970 | /** | |
1971 | * bnx2i_process_new_cqes - process newly DMA'ed CQE's | |
b5cf6b63 | 1972 | * @bnx2i_conn: bnx2i connection |
cf4e6363 MC |
1973 | * |
1974 | * this function is called by generic KCQ handler to process all pending CQE's | |
1975 | */ | |
b5cf6b63 | 1976 | static int bnx2i_process_new_cqes(struct bnx2i_conn *bnx2i_conn) |
cf4e6363 MC |
1977 | { |
1978 | struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; | |
1979 | struct iscsi_session *session = conn->session; | |
2e499d3c | 1980 | struct bnx2i_hba *hba = bnx2i_conn->hba; |
b5cf6b63 | 1981 | struct qp_info *qp; |
cf4e6363 MC |
1982 | struct bnx2i_nop_in_msg *nopin; |
1983 | int tgt_async_msg; | |
b5cf6b63 | 1984 | int cqe_cnt = 0; |
cf4e6363 | 1985 | |
b5cf6b63 EW |
1986 | if (bnx2i_conn->ep == NULL) |
1987 | return 0; | |
1988 | ||
1989 | qp = &bnx2i_conn->ep->qp; | |
1990 | ||
1991 | if (!qp->cq_virt) { | |
1992 | printk(KERN_ALERT "bnx2i (%s): cq resr freed in bh execution!", | |
2e499d3c | 1993 | hba->netdev->name); |
b5cf6b63 EW |
1994 | goto out; |
1995 | } | |
cf4e6363 MC |
1996 | while (1) { |
1997 | nopin = (struct bnx2i_nop_in_msg *) qp->cq_cons_qe; | |
1998 | if (nopin->cq_req_sn != qp->cqe_exp_seq_sn) | |
1999 | break; | |
2000 | ||
5ee32576 EW |
2001 | if (unlikely(test_bit(ISCSI_SUSPEND_BIT, &conn->suspend_rx))) { |
2002 | if (nopin->op_code == ISCSI_OP_NOOP_IN && | |
2003 | nopin->itt == (u16) RESERVED_ITT) { | |
2004 | printk(KERN_ALERT "bnx2i: Unsolicited " | |
2e499d3c BW |
2005 | "NOP-In detected for suspended " |
2006 | "connection dev=%s!\n", | |
2007 | hba->netdev->name); | |
5ee32576 EW |
2008 | bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); |
2009 | goto cqe_out; | |
2010 | } | |
cf4e6363 | 2011 | break; |
5ee32576 | 2012 | } |
cf4e6363 MC |
2013 | tgt_async_msg = 0; |
2014 | ||
2015 | switch (nopin->op_code) { | |
2016 | case ISCSI_OP_SCSI_CMD_RSP: | |
2017 | case ISCSI_OP_SCSI_DATA_IN: | |
b5cf6b63 EW |
2018 | /* Run the kthread engine only for data cmds |
2019 | All other cmds will be completed in this bh! */ | |
2020 | bnx2i_queue_scsi_cmd_resp(session, bnx2i_conn, nopin); | |
2e499d3c | 2021 | goto done; |
cf4e6363 MC |
2022 | case ISCSI_OP_LOGIN_RSP: |
2023 | bnx2i_process_login_resp(session, bnx2i_conn, | |
2024 | qp->cq_cons_qe); | |
2025 | break; | |
2026 | case ISCSI_OP_SCSI_TMFUNC_RSP: | |
2027 | bnx2i_process_tmf_resp(session, bnx2i_conn, | |
2028 | qp->cq_cons_qe); | |
09813ba5 EW |
2029 | break; |
2030 | case ISCSI_OP_TEXT_RSP: | |
2031 | bnx2i_process_text_resp(session, bnx2i_conn, | |
2032 | qp->cq_cons_qe); | |
cf4e6363 MC |
2033 | break; |
2034 | case ISCSI_OP_LOGOUT_RSP: | |
2035 | bnx2i_process_logout_resp(session, bnx2i_conn, | |
2036 | qp->cq_cons_qe); | |
2037 | break; | |
2038 | case ISCSI_OP_NOOP_IN: | |
2039 | if (bnx2i_process_nopin_mesg(session, bnx2i_conn, | |
2040 | qp->cq_cons_qe)) | |
2041 | tgt_async_msg = 1; | |
2042 | break; | |
2043 | case ISCSI_OPCODE_NOPOUT_LOCAL_COMPLETION: | |
2044 | bnx2i_process_nopin_local_cmpl(session, bnx2i_conn, | |
2045 | qp->cq_cons_qe); | |
2046 | break; | |
2047 | case ISCSI_OP_ASYNC_EVENT: | |
2048 | bnx2i_process_async_mesg(session, bnx2i_conn, | |
2049 | qp->cq_cons_qe); | |
2050 | tgt_async_msg = 1; | |
2051 | break; | |
2052 | case ISCSI_OP_REJECT: | |
2053 | bnx2i_process_reject_mesg(session, bnx2i_conn, | |
2054 | qp->cq_cons_qe); | |
2055 | break; | |
2056 | case ISCSI_OPCODE_CLEANUP_RESPONSE: | |
2057 | bnx2i_process_cmd_cleanup_resp(session, bnx2i_conn, | |
2058 | qp->cq_cons_qe); | |
2059 | break; | |
2060 | default: | |
2061 | printk(KERN_ALERT "bnx2i: unknown opcode 0x%x\n", | |
2062 | nopin->op_code); | |
2063 | } | |
2e499d3c BW |
2064 | |
2065 | ADD_STATS_64(hba, rx_pdus, 1); | |
2066 | ADD_STATS_64(hba, rx_bytes, nopin->data_length); | |
2067 | done: | |
b5cf6b63 EW |
2068 | if (!tgt_async_msg) { |
2069 | if (!atomic_read(&bnx2i_conn->ep->num_active_cmds)) | |
2070 | printk(KERN_ALERT "bnx2i (%s): no active cmd! " | |
2071 | "op 0x%x\n", | |
2e499d3c | 2072 | hba->netdev->name, |
b5cf6b63 EW |
2073 | nopin->op_code); |
2074 | else | |
2075 | atomic_dec(&bnx2i_conn->ep->num_active_cmds); | |
2076 | } | |
5ee32576 | 2077 | cqe_out: |
cf4e6363 MC |
2078 | /* clear out in production version only, till beta keep opcode |
2079 | * field intact, will be helpful in debugging (context dump) | |
2080 | * nopin->op_code = 0; | |
2081 | */ | |
b5cf6b63 | 2082 | cqe_cnt++; |
cf4e6363 MC |
2083 | qp->cqe_exp_seq_sn++; |
2084 | if (qp->cqe_exp_seq_sn == (qp->cqe_size * 2 + 1)) | |
2085 | qp->cqe_exp_seq_sn = ISCSI_INITIAL_SN; | |
2086 | ||
2087 | if (qp->cq_cons_qe == qp->cq_last_qe) { | |
2088 | qp->cq_cons_qe = qp->cq_first_qe; | |
2089 | qp->cq_cons_idx = 0; | |
2090 | } else { | |
2091 | qp->cq_cons_qe++; | |
2092 | qp->cq_cons_idx++; | |
2093 | } | |
2094 | } | |
b5cf6b63 EW |
2095 | out: |
2096 | return cqe_cnt; | |
cf4e6363 MC |
2097 | } |
2098 | ||
2099 | /** | |
2100 | * bnx2i_fastpath_notification - process global event queue (KCQ) | |
2101 | * @hba: adapter structure pointer | |
2102 | * @new_cqe_kcqe: pointer to newly DMA'ed KCQE entry | |
2103 | * | |
2104 | * Fast path event notification handler, KCQ entry carries context id | |
2105 | * of the connection that has 1 or more pending CQ entries | |
2106 | */ | |
2107 | static void bnx2i_fastpath_notification(struct bnx2i_hba *hba, | |
2108 | struct iscsi_kcqe *new_cqe_kcqe) | |
2109 | { | |
9ae58e14 | 2110 | struct bnx2i_conn *bnx2i_conn; |
cf4e6363 | 2111 | u32 iscsi_cid; |
b5cf6b63 | 2112 | int nxt_idx; |
cf4e6363 MC |
2113 | |
2114 | iscsi_cid = new_cqe_kcqe->iscsi_conn_id; | |
9ae58e14 | 2115 | bnx2i_conn = bnx2i_get_conn_from_id(hba, iscsi_cid); |
cf4e6363 | 2116 | |
9ae58e14 | 2117 | if (!bnx2i_conn) { |
cf4e6363 MC |
2118 | printk(KERN_ALERT "cid #%x not valid\n", iscsi_cid); |
2119 | return; | |
2120 | } | |
9ae58e14 | 2121 | if (!bnx2i_conn->ep) { |
cf4e6363 MC |
2122 | printk(KERN_ALERT "cid #%x - ep not bound\n", iscsi_cid); |
2123 | return; | |
2124 | } | |
b5cf6b63 | 2125 | |
9ae58e14 | 2126 | bnx2i_process_new_cqes(bnx2i_conn); |
b5cf6b63 EW |
2127 | nxt_idx = bnx2i_arm_cq_event_coalescing(bnx2i_conn->ep, |
2128 | CNIC_ARM_CQE_FP); | |
2129 | if (nxt_idx && nxt_idx == bnx2i_process_new_cqes(bnx2i_conn)) | |
2130 | bnx2i_arm_cq_event_coalescing(bnx2i_conn->ep, CNIC_ARM_CQE_FP); | |
cf4e6363 MC |
2131 | } |
2132 | ||
2133 | ||
2134 | /** | |
2135 | * bnx2i_process_update_conn_cmpl - process iscsi conn update completion KCQE | |
2136 | * @hba: adapter structure pointer | |
2137 | * @update_kcqe: kcqe pointer | |
2138 | * | |
2139 | * CONN_UPDATE completion handler, this completes iSCSI connection FFP migration | |
2140 | */ | |
2141 | static void bnx2i_process_update_conn_cmpl(struct bnx2i_hba *hba, | |
2142 | struct iscsi_kcqe *update_kcqe) | |
2143 | { | |
2144 | struct bnx2i_conn *conn; | |
2145 | u32 iscsi_cid; | |
2146 | ||
2147 | iscsi_cid = update_kcqe->iscsi_conn_id; | |
2148 | conn = bnx2i_get_conn_from_id(hba, iscsi_cid); | |
2149 | ||
2150 | if (!conn) { | |
2151 | printk(KERN_ALERT "conn_update: cid %x not valid\n", iscsi_cid); | |
2152 | return; | |
2153 | } | |
2154 | if (!conn->ep) { | |
2155 | printk(KERN_ALERT "cid %x does not have ep bound\n", iscsi_cid); | |
2156 | return; | |
2157 | } | |
2158 | ||
2159 | if (update_kcqe->completion_status) { | |
2160 | printk(KERN_ALERT "request failed cid %x\n", iscsi_cid); | |
2161 | conn->ep->state = EP_STATE_ULP_UPDATE_FAILED; | |
2162 | } else | |
2163 | conn->ep->state = EP_STATE_ULP_UPDATE_COMPL; | |
2164 | ||
2165 | wake_up_interruptible(&conn->ep->ofld_wait); | |
2166 | } | |
2167 | ||
2168 | ||
2169 | /** | |
2170 | * bnx2i_recovery_que_add_conn - add connection to recovery queue | |
2171 | * @hba: adapter structure pointer | |
2172 | * @bnx2i_conn: iscsi connection | |
2173 | * | |
2174 | * Add connection to recovery queue and schedule adapter eh worker | |
2175 | */ | |
2176 | static void bnx2i_recovery_que_add_conn(struct bnx2i_hba *hba, | |
2177 | struct bnx2i_conn *bnx2i_conn) | |
2178 | { | |
2179 | iscsi_conn_failure(bnx2i_conn->cls_conn->dd_data, | |
2180 | ISCSI_ERR_CONN_FAILED); | |
2181 | } | |
2182 | ||
2183 | ||
2184 | /** | |
2185 | * bnx2i_process_tcp_error - process error notification on a given connection | |
2186 | * | |
2187 | * @hba: adapter structure pointer | |
2188 | * @tcp_err: tcp error kcqe pointer | |
2189 | * | |
2190 | * handles tcp level error notifications from FW. | |
2191 | */ | |
2192 | static void bnx2i_process_tcp_error(struct bnx2i_hba *hba, | |
2193 | struct iscsi_kcqe *tcp_err) | |
2194 | { | |
2195 | struct bnx2i_conn *bnx2i_conn; | |
2196 | u32 iscsi_cid; | |
2197 | ||
2198 | iscsi_cid = tcp_err->iscsi_conn_id; | |
2199 | bnx2i_conn = bnx2i_get_conn_from_id(hba, iscsi_cid); | |
2200 | ||
2201 | if (!bnx2i_conn) { | |
2202 | printk(KERN_ALERT "bnx2i - cid 0x%x not valid\n", iscsi_cid); | |
2203 | return; | |
2204 | } | |
2205 | ||
2206 | printk(KERN_ALERT "bnx2i - cid 0x%x had TCP errors, error code 0x%x\n", | |
2207 | iscsi_cid, tcp_err->completion_status); | |
2208 | bnx2i_recovery_que_add_conn(bnx2i_conn->hba, bnx2i_conn); | |
2209 | } | |
2210 | ||
2211 | ||
2212 | /** | |
2213 | * bnx2i_process_iscsi_error - process error notification on a given connection | |
2214 | * @hba: adapter structure pointer | |
2215 | * @iscsi_err: iscsi error kcqe pointer | |
2216 | * | |
2217 | * handles iscsi error notifications from the FW. Firmware based in initial | |
2218 | * handshake classifies iscsi protocol / TCP rfc violation into either | |
2219 | * warning or error indications. If indication is of "Error" type, driver | |
2220 | * will initiate session recovery for that connection/session. For | |
2221 | * "Warning" type indication, driver will put out a system log message | |
2222 | * (there will be only one message for each type for the life of the | |
2223 | * session, this is to avoid un-necessarily overloading the system) | |
2224 | */ | |
2225 | static void bnx2i_process_iscsi_error(struct bnx2i_hba *hba, | |
2226 | struct iscsi_kcqe *iscsi_err) | |
2227 | { | |
2228 | struct bnx2i_conn *bnx2i_conn; | |
2229 | u32 iscsi_cid; | |
2230 | char warn_notice[] = "iscsi_warning"; | |
2231 | char error_notice[] = "iscsi_error"; | |
2232 | char additional_notice[64]; | |
2233 | char *message; | |
2234 | int need_recovery; | |
2235 | u64 err_mask64; | |
2236 | ||
2237 | iscsi_cid = iscsi_err->iscsi_conn_id; | |
2238 | bnx2i_conn = bnx2i_get_conn_from_id(hba, iscsi_cid); | |
2239 | if (!bnx2i_conn) { | |
2240 | printk(KERN_ALERT "bnx2i - cid 0x%x not valid\n", iscsi_cid); | |
2241 | return; | |
2242 | } | |
2243 | ||
2244 | err_mask64 = (0x1ULL << iscsi_err->completion_status); | |
2245 | ||
2246 | if (err_mask64 & iscsi_error_mask) { | |
2247 | need_recovery = 0; | |
2248 | message = warn_notice; | |
2249 | } else { | |
2250 | need_recovery = 1; | |
2251 | message = error_notice; | |
2252 | } | |
2253 | ||
2254 | switch (iscsi_err->completion_status) { | |
2255 | case ISCSI_KCQE_COMPLETION_STATUS_HDR_DIG_ERR: | |
2256 | strcpy(additional_notice, "hdr digest err"); | |
2257 | break; | |
2258 | case ISCSI_KCQE_COMPLETION_STATUS_DATA_DIG_ERR: | |
2259 | strcpy(additional_notice, "data digest err"); | |
2260 | break; | |
2261 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_OPCODE: | |
2262 | strcpy(additional_notice, "wrong opcode rcvd"); | |
2263 | break; | |
2264 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_AHS_LEN: | |
2265 | strcpy(additional_notice, "AHS len > 0 rcvd"); | |
2266 | break; | |
2267 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_ITT: | |
2268 | strcpy(additional_notice, "invalid ITT rcvd"); | |
2269 | break; | |
2270 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_STATSN: | |
2271 | strcpy(additional_notice, "wrong StatSN rcvd"); | |
2272 | break; | |
2273 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_EXP_DATASN: | |
2274 | strcpy(additional_notice, "wrong DataSN rcvd"); | |
2275 | break; | |
2276 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T: | |
2277 | strcpy(additional_notice, "pend R2T violation"); | |
2278 | break; | |
2279 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_0: | |
2280 | strcpy(additional_notice, "ERL0, UO"); | |
2281 | break; | |
2282 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_1: | |
2283 | strcpy(additional_notice, "ERL0, U1"); | |
2284 | break; | |
2285 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_2: | |
2286 | strcpy(additional_notice, "ERL0, U2"); | |
2287 | break; | |
2288 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_3: | |
2289 | strcpy(additional_notice, "ERL0, U3"); | |
2290 | break; | |
2291 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_4: | |
2292 | strcpy(additional_notice, "ERL0, U4"); | |
2293 | break; | |
2294 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_5: | |
2295 | strcpy(additional_notice, "ERL0, U5"); | |
2296 | break; | |
2297 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_6: | |
2298 | strcpy(additional_notice, "ERL0, U6"); | |
2299 | break; | |
2300 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REMAIN_RCV_LEN: | |
2301 | strcpy(additional_notice, "invalid resi len"); | |
2302 | break; | |
2303 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_MAX_RCV_PDU_LEN: | |
2304 | strcpy(additional_notice, "MRDSL violation"); | |
2305 | break; | |
2306 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_F_BIT_ZERO: | |
2307 | strcpy(additional_notice, "F-bit not set"); | |
2308 | break; | |
2309 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_NOT_RSRV: | |
2310 | strcpy(additional_notice, "invalid TTT"); | |
2311 | break; | |
2312 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DATASN: | |
2313 | strcpy(additional_notice, "invalid DataSN"); | |
2314 | break; | |
2315 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REMAIN_BURST_LEN: | |
2316 | strcpy(additional_notice, "burst len violation"); | |
2317 | break; | |
2318 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_BUFFER_OFF: | |
2319 | strcpy(additional_notice, "buf offset violation"); | |
2320 | break; | |
2321 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_LUN: | |
2322 | strcpy(additional_notice, "invalid LUN field"); | |
2323 | break; | |
2324 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_R2TSN: | |
2325 | strcpy(additional_notice, "invalid R2TSN field"); | |
2326 | break; | |
2327 | #define BNX2I_ERR_DESIRED_DATA_TRNS_LEN_0 \ | |
2328 | ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_0 | |
2329 | case BNX2I_ERR_DESIRED_DATA_TRNS_LEN_0: | |
2330 | strcpy(additional_notice, "invalid cmd len1"); | |
2331 | break; | |
2332 | #define BNX2I_ERR_DESIRED_DATA_TRNS_LEN_1 \ | |
2333 | ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_1 | |
2334 | case BNX2I_ERR_DESIRED_DATA_TRNS_LEN_1: | |
2335 | strcpy(additional_notice, "invalid cmd len2"); | |
2336 | break; | |
2337 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T_EXCEED: | |
2338 | strcpy(additional_notice, | |
2339 | "pend r2t exceeds MaxOutstandingR2T value"); | |
2340 | break; | |
2341 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_IS_RSRV: | |
2342 | strcpy(additional_notice, "TTT is rsvd"); | |
2343 | break; | |
2344 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_MAX_BURST_LEN: | |
2345 | strcpy(additional_notice, "MBL violation"); | |
2346 | break; | |
2347 | #define BNX2I_ERR_DATA_SEG_LEN_NOT_ZERO \ | |
2348 | ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DATA_SEG_LEN_NOT_ZERO | |
2349 | case BNX2I_ERR_DATA_SEG_LEN_NOT_ZERO: | |
2350 | strcpy(additional_notice, "data seg len != 0"); | |
2351 | break; | |
2352 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REJECT_PDU_LEN: | |
2353 | strcpy(additional_notice, "reject pdu len error"); | |
2354 | break; | |
2355 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_ASYNC_PDU_LEN: | |
2356 | strcpy(additional_notice, "async pdu len error"); | |
2357 | break; | |
2358 | case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_NOPIN_PDU_LEN: | |
2359 | strcpy(additional_notice, "nopin pdu len error"); | |
2360 | break; | |
2361 | #define BNX2_ERR_PEND_R2T_IN_CLEANUP \ | |
2362 | ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T_IN_CLEANUP | |
2363 | case BNX2_ERR_PEND_R2T_IN_CLEANUP: | |
2364 | strcpy(additional_notice, "pend r2t in cleanup"); | |
2365 | break; | |
2366 | ||
2367 | case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_IP_FRAGMENT: | |
2368 | strcpy(additional_notice, "IP fragments rcvd"); | |
2369 | break; | |
2370 | case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_IP_OPTIONS: | |
2371 | strcpy(additional_notice, "IP options error"); | |
2372 | break; | |
2373 | case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_URGENT_FLAG: | |
2374 | strcpy(additional_notice, "urgent flag error"); | |
2375 | break; | |
2376 | default: | |
2377 | printk(KERN_ALERT "iscsi_err - unknown err %x\n", | |
2378 | iscsi_err->completion_status); | |
2379 | } | |
2380 | ||
2381 | if (need_recovery) { | |
2382 | iscsi_conn_printk(KERN_ALERT, | |
2383 | bnx2i_conn->cls_conn->dd_data, | |
2384 | "bnx2i: %s - %s\n", | |
2385 | message, additional_notice); | |
2386 | ||
2387 | iscsi_conn_printk(KERN_ALERT, | |
2388 | bnx2i_conn->cls_conn->dd_data, | |
2389 | "conn_err - hostno %d conn %p, " | |
2390 | "iscsi_cid %x cid %x\n", | |
2391 | bnx2i_conn->hba->shost->host_no, | |
2392 | bnx2i_conn, bnx2i_conn->ep->ep_iscsi_cid, | |
2393 | bnx2i_conn->ep->ep_cid); | |
2394 | bnx2i_recovery_que_add_conn(bnx2i_conn->hba, bnx2i_conn); | |
2395 | } else | |
2396 | if (!test_and_set_bit(iscsi_err->completion_status, | |
2397 | (void *) &bnx2i_conn->violation_notified)) | |
2398 | iscsi_conn_printk(KERN_ALERT, | |
2399 | bnx2i_conn->cls_conn->dd_data, | |
2400 | "bnx2i: %s - %s\n", | |
2401 | message, additional_notice); | |
2402 | } | |
2403 | ||
2404 | ||
2405 | /** | |
2406 | * bnx2i_process_conn_destroy_cmpl - process iscsi conn destroy completion | |
2407 | * @hba: adapter structure pointer | |
2408 | * @conn_destroy: conn destroy kcqe pointer | |
2409 | * | |
2410 | * handles connection destroy completion request. | |
2411 | */ | |
2412 | static void bnx2i_process_conn_destroy_cmpl(struct bnx2i_hba *hba, | |
2413 | struct iscsi_kcqe *conn_destroy) | |
2414 | { | |
2415 | struct bnx2i_endpoint *ep; | |
2416 | ||
2417 | ep = bnx2i_find_ep_in_destroy_list(hba, conn_destroy->iscsi_conn_id); | |
2418 | if (!ep) { | |
2419 | printk(KERN_ALERT "bnx2i_conn_destroy_cmpl: no pending " | |
2420 | "offload request, unexpected complection\n"); | |
2421 | return; | |
2422 | } | |
2423 | ||
2424 | if (hba != ep->hba) { | |
2425 | printk(KERN_ALERT "conn destroy- error hba mis-match\n"); | |
2426 | return; | |
2427 | } | |
2428 | ||
2429 | if (conn_destroy->completion_status) { | |
2430 | printk(KERN_ALERT "conn_destroy_cmpl: op failed\n"); | |
2431 | ep->state = EP_STATE_CLEANUP_FAILED; | |
2432 | } else | |
2433 | ep->state = EP_STATE_CLEANUP_CMPL; | |
2434 | wake_up_interruptible(&ep->ofld_wait); | |
2435 | } | |
2436 | ||
2437 | ||
2438 | /** | |
2439 | * bnx2i_process_ofld_cmpl - process initial iscsi conn offload completion | |
2440 | * @hba: adapter structure pointer | |
2441 | * @ofld_kcqe: conn offload kcqe pointer | |
2442 | * | |
2443 | * handles initial connection offload completion, ep_connect() thread is | |
2444 | * woken-up to continue with LLP connect process | |
2445 | */ | |
2446 | static void bnx2i_process_ofld_cmpl(struct bnx2i_hba *hba, | |
2447 | struct iscsi_kcqe *ofld_kcqe) | |
2448 | { | |
2449 | u32 cid_addr; | |
2450 | struct bnx2i_endpoint *ep; | |
2451 | u32 cid_num; | |
2452 | ||
2453 | ep = bnx2i_find_ep_in_ofld_list(hba, ofld_kcqe->iscsi_conn_id); | |
2454 | if (!ep) { | |
2455 | printk(KERN_ALERT "ofld_cmpl: no pend offload request\n"); | |
2456 | return; | |
2457 | } | |
2458 | ||
2459 | if (hba != ep->hba) { | |
2460 | printk(KERN_ALERT "ofld_cmpl: error hba mis-match\n"); | |
2461 | return; | |
2462 | } | |
2463 | ||
2464 | if (ofld_kcqe->completion_status) { | |
bee34877 | 2465 | ep->state = EP_STATE_OFLD_FAILED; |
cf4e6363 MC |
2466 | if (ofld_kcqe->completion_status == |
2467 | ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE) | |
bee34877 EW |
2468 | printk(KERN_ALERT "bnx2i (%s): ofld1 cmpl - unable " |
2469 | "to allocate iSCSI context resources\n", | |
2470 | hba->netdev->name); | |
2471 | else if (ofld_kcqe->completion_status == | |
2472 | ISCSI_KCQE_COMPLETION_STATUS_INVALID_OPCODE) | |
2473 | printk(KERN_ALERT "bnx2i (%s): ofld1 cmpl - invalid " | |
2474 | "opcode\n", hba->netdev->name); | |
2475 | else if (ofld_kcqe->completion_status == | |
b5cf6b63 | 2476 | ISCSI_KCQE_COMPLETION_STATUS_CID_BUSY) |
bee34877 EW |
2477 | /* error status code valid only for 5771x chipset */ |
2478 | ep->state = EP_STATE_OFLD_FAILED_CID_BUSY; | |
2479 | else | |
2480 | printk(KERN_ALERT "bnx2i (%s): ofld1 cmpl - invalid " | |
2481 | "error code %d\n", hba->netdev->name, | |
2482 | ofld_kcqe->completion_status); | |
cf4e6363 MC |
2483 | } else { |
2484 | ep->state = EP_STATE_OFLD_COMPL; | |
2485 | cid_addr = ofld_kcqe->iscsi_conn_context_id; | |
2486 | cid_num = bnx2i_get_cid_num(ep); | |
2487 | ep->ep_cid = cid_addr; | |
2488 | ep->qp.ctx_base = NULL; | |
2489 | } | |
2490 | wake_up_interruptible(&ep->ofld_wait); | |
2491 | } | |
2492 | ||
2493 | /** | |
2494 | * bnx2i_indicate_kcqe - process iscsi conn update completion KCQE | |
2495 | * @hba: adapter structure pointer | |
2496 | * @update_kcqe: kcqe pointer | |
2497 | * | |
2498 | * Generic KCQ event handler/dispatcher | |
2499 | */ | |
2500 | static void bnx2i_indicate_kcqe(void *context, struct kcqe *kcqe[], | |
2501 | u32 num_cqe) | |
2502 | { | |
2503 | struct bnx2i_hba *hba = context; | |
2504 | int i = 0; | |
2505 | struct iscsi_kcqe *ikcqe = NULL; | |
2506 | ||
2507 | while (i < num_cqe) { | |
2508 | ikcqe = (struct iscsi_kcqe *) kcqe[i++]; | |
2509 | ||
2510 | if (ikcqe->op_code == | |
2511 | ISCSI_KCQE_OPCODE_CQ_EVENT_NOTIFICATION) | |
2512 | bnx2i_fastpath_notification(hba, ikcqe); | |
2513 | else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_OFFLOAD_CONN) | |
2514 | bnx2i_process_ofld_cmpl(hba, ikcqe); | |
2515 | else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_UPDATE_CONN) | |
2516 | bnx2i_process_update_conn_cmpl(hba, ikcqe); | |
2517 | else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_INIT) { | |
2518 | if (ikcqe->completion_status != | |
2519 | ISCSI_KCQE_COMPLETION_STATUS_SUCCESS) | |
2520 | bnx2i_iscsi_license_error(hba, ikcqe->\ | |
2521 | completion_status); | |
2522 | else { | |
2523 | set_bit(ADAPTER_STATE_UP, &hba->adapter_state); | |
2524 | bnx2i_get_link_state(hba); | |
2525 | printk(KERN_INFO "bnx2i [%.2x:%.2x.%.2x]: " | |
2526 | "ISCSI_INIT passed\n", | |
2527 | (u8)hba->pcidev->bus->number, | |
2528 | hba->pci_devno, | |
2529 | (u8)hba->pci_func); | |
2530 | ||
2531 | ||
2532 | } | |
2533 | } else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_DESTROY_CONN) | |
2534 | bnx2i_process_conn_destroy_cmpl(hba, ikcqe); | |
2535 | else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_ISCSI_ERROR) | |
2536 | bnx2i_process_iscsi_error(hba, ikcqe); | |
2537 | else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_TCP_ERROR) | |
2538 | bnx2i_process_tcp_error(hba, ikcqe); | |
2539 | else | |
2540 | printk(KERN_ALERT "bnx2i: unknown opcode 0x%x\n", | |
2541 | ikcqe->op_code); | |
2542 | } | |
2543 | } | |
2544 | ||
2545 | ||
2546 | /** | |
2547 | * bnx2i_indicate_netevent - Generic netdev event handler | |
2548 | * @context: adapter structure pointer | |
2549 | * @event: event type | |
415199f2 | 2550 | * @vlan_id: vlans id - associated vlan id with this event |
cf4e6363 MC |
2551 | * |
2552 | * Handles four netdev events, NETDEV_UP, NETDEV_DOWN, | |
2553 | * NETDEV_GOING_DOWN and NETDEV_CHANGE | |
2554 | */ | |
415199f2 MC |
2555 | static void bnx2i_indicate_netevent(void *context, unsigned long event, |
2556 | u16 vlan_id) | |
cf4e6363 MC |
2557 | { |
2558 | struct bnx2i_hba *hba = context; | |
2559 | ||
415199f2 MC |
2560 | /* Ignore all netevent coming from vlans */ |
2561 | if (vlan_id != 0) | |
2562 | return; | |
2563 | ||
cf4e6363 MC |
2564 | switch (event) { |
2565 | case NETDEV_UP: | |
2566 | if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) | |
2567 | bnx2i_send_fw_iscsi_init_msg(hba); | |
2568 | break; | |
2569 | case NETDEV_DOWN: | |
2570 | clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); | |
2571 | clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); | |
2572 | break; | |
2573 | case NETDEV_GOING_DOWN: | |
2574 | set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); | |
2575 | iscsi_host_for_each_session(hba->shost, | |
2576 | bnx2i_drop_session); | |
2577 | break; | |
2578 | case NETDEV_CHANGE: | |
2579 | bnx2i_get_link_state(hba); | |
2580 | break; | |
2581 | default: | |
2582 | ; | |
2583 | } | |
2584 | } | |
2585 | ||
2586 | ||
2587 | /** | |
2588 | * bnx2i_cm_connect_cmpl - process iscsi conn establishment completion | |
2589 | * @cm_sk: cnic sock structure pointer | |
2590 | * | |
2591 | * function callback exported via bnx2i - cnic driver interface to | |
2592 | * indicate completion of option-2 TCP connect request. | |
2593 | */ | |
2594 | static void bnx2i_cm_connect_cmpl(struct cnic_sock *cm_sk) | |
2595 | { | |
2596 | struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; | |
2597 | ||
2598 | if (test_bit(ADAPTER_STATE_GOING_DOWN, &ep->hba->adapter_state)) | |
2599 | ep->state = EP_STATE_CONNECT_FAILED; | |
2600 | else if (test_bit(SK_F_OFFLD_COMPLETE, &cm_sk->flags)) | |
2601 | ep->state = EP_STATE_CONNECT_COMPL; | |
2602 | else | |
2603 | ep->state = EP_STATE_CONNECT_FAILED; | |
2604 | ||
2605 | wake_up_interruptible(&ep->ofld_wait); | |
2606 | } | |
2607 | ||
2608 | ||
2609 | /** | |
2610 | * bnx2i_cm_close_cmpl - process tcp conn close completion | |
2611 | * @cm_sk: cnic sock structure pointer | |
2612 | * | |
2613 | * function callback exported via bnx2i - cnic driver interface to | |
2614 | * indicate completion of option-2 graceful TCP connect shutdown | |
2615 | */ | |
2616 | static void bnx2i_cm_close_cmpl(struct cnic_sock *cm_sk) | |
2617 | { | |
2618 | struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; | |
2619 | ||
2620 | ep->state = EP_STATE_DISCONN_COMPL; | |
2621 | wake_up_interruptible(&ep->ofld_wait); | |
2622 | } | |
2623 | ||
2624 | ||
2625 | /** | |
2626 | * bnx2i_cm_abort_cmpl - process abortive tcp conn teardown completion | |
2627 | * @cm_sk: cnic sock structure pointer | |
2628 | * | |
2629 | * function callback exported via bnx2i - cnic driver interface to | |
2630 | * indicate completion of option-2 abortive TCP connect termination | |
2631 | */ | |
2632 | static void bnx2i_cm_abort_cmpl(struct cnic_sock *cm_sk) | |
2633 | { | |
2634 | struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; | |
2635 | ||
2636 | ep->state = EP_STATE_DISCONN_COMPL; | |
2637 | wake_up_interruptible(&ep->ofld_wait); | |
2638 | } | |
2639 | ||
2640 | ||
2641 | /** | |
2642 | * bnx2i_cm_remote_close - process received TCP FIN | |
2643 | * @hba: adapter structure pointer | |
2644 | * @update_kcqe: kcqe pointer | |
2645 | * | |
2646 | * function callback exported via bnx2i - cnic driver interface to indicate | |
2647 | * async TCP events such as FIN | |
2648 | */ | |
2649 | static void bnx2i_cm_remote_close(struct cnic_sock *cm_sk) | |
2650 | { | |
2651 | struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; | |
2652 | ||
2653 | ep->state = EP_STATE_TCP_FIN_RCVD; | |
2654 | if (ep->conn) | |
2655 | bnx2i_recovery_que_add_conn(ep->hba, ep->conn); | |
2656 | } | |
2657 | ||
2658 | /** | |
2659 | * bnx2i_cm_remote_abort - process TCP RST and start conn cleanup | |
2660 | * @hba: adapter structure pointer | |
2661 | * @update_kcqe: kcqe pointer | |
2662 | * | |
2663 | * function callback exported via bnx2i - cnic driver interface to | |
2664 | * indicate async TCP events (RST) sent by the peer. | |
2665 | */ | |
2666 | static void bnx2i_cm_remote_abort(struct cnic_sock *cm_sk) | |
2667 | { | |
2668 | struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; | |
94810e82 | 2669 | u32 old_state = ep->state; |
cf4e6363 MC |
2670 | |
2671 | ep->state = EP_STATE_TCP_RST_RCVD; | |
94810e82 EW |
2672 | if (old_state == EP_STATE_DISCONN_START) |
2673 | wake_up_interruptible(&ep->ofld_wait); | |
2674 | else | |
2675 | if (ep->conn) | |
2676 | bnx2i_recovery_que_add_conn(ep->hba, ep->conn); | |
cf4e6363 MC |
2677 | } |
2678 | ||
2679 | ||
939b82e5 | 2680 | static int bnx2i_send_nl_mesg(void *context, u32 msg_type, |
b5cf6b63 | 2681 | char *buf, u16 buflen) |
cf4e6363 | 2682 | { |
939b82e5 MC |
2683 | struct bnx2i_hba *hba = context; |
2684 | int rc; | |
cf4e6363 | 2685 | |
cf4e6363 | 2686 | if (!hba) |
939b82e5 | 2687 | return -ENODEV; |
cf4e6363 | 2688 | |
939b82e5 MC |
2689 | rc = iscsi_offload_mesg(hba->shost, &bnx2i_iscsi_transport, |
2690 | msg_type, buf, buflen); | |
2691 | if (rc) | |
cf4e6363 MC |
2692 | printk(KERN_ALERT "bnx2i: private nl message send error\n"); |
2693 | ||
939b82e5 | 2694 | return rc; |
cf4e6363 MC |
2695 | } |
2696 | ||
2697 | ||
2698 | /** | |
2699 | * bnx2i_cnic_cb - global template of bnx2i - cnic driver interface structure | |
2700 | * carrying callback function pointers | |
2701 | * | |
2702 | */ | |
2703 | struct cnic_ulp_ops bnx2i_cnic_cb = { | |
2704 | .cnic_init = bnx2i_ulp_init, | |
2705 | .cnic_exit = bnx2i_ulp_exit, | |
2706 | .cnic_start = bnx2i_start, | |
2707 | .cnic_stop = bnx2i_stop, | |
2708 | .indicate_kcqes = bnx2i_indicate_kcqe, | |
2709 | .indicate_netevent = bnx2i_indicate_netevent, | |
2710 | .cm_connect_complete = bnx2i_cm_connect_cmpl, | |
2711 | .cm_close_complete = bnx2i_cm_close_cmpl, | |
2712 | .cm_abort_complete = bnx2i_cm_abort_cmpl, | |
2713 | .cm_remote_close = bnx2i_cm_remote_close, | |
2714 | .cm_remote_abort = bnx2i_cm_remote_abort, | |
2715 | .iscsi_nl_send_msg = bnx2i_send_nl_mesg, | |
2e499d3c | 2716 | .cnic_get_stats = bnx2i_get_stats, |
cf4e6363 MC |
2717 | .owner = THIS_MODULE |
2718 | }; | |
2719 | ||
2720 | ||
2721 | /** | |
2722 | * bnx2i_map_ep_dbell_regs - map connection doorbell registers | |
2723 | * @ep: bnx2i endpoint | |
2724 | * | |
2725 | * maps connection's SQ and RQ doorbell registers, 5706/5708/5709 hosts these | |
2726 | * register in BAR #0. Whereas in 57710 these register are accessed by | |
2727 | * mapping BAR #1 | |
2728 | */ | |
2729 | int bnx2i_map_ep_dbell_regs(struct bnx2i_endpoint *ep) | |
2730 | { | |
2731 | u32 cid_num; | |
2732 | u32 reg_off; | |
2733 | u32 first_l4l5; | |
2734 | u32 ctx_sz; | |
2735 | u32 config2; | |
2736 | resource_size_t reg_base; | |
2737 | ||
2738 | cid_num = bnx2i_get_cid_num(ep); | |
2739 | ||
2740 | if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { | |
2741 | reg_base = pci_resource_start(ep->hba->pcidev, | |
2742 | BNX2X_DOORBELL_PCI_BAR); | |
f78afb35 | 2743 | reg_off = (1 << BNX2X_DB_SHIFT) * (cid_num & 0x1FFFF); |
cf4e6363 MC |
2744 | ep->qp.ctx_base = ioremap_nocache(reg_base + reg_off, 4); |
2745 | goto arm_cq; | |
2746 | } | |
2747 | ||
cf4e6363 MC |
2748 | if ((test_bit(BNX2I_NX2_DEV_5709, &ep->hba->cnic_dev_type)) && |
2749 | (ep->hba->mail_queue_access == BNX2I_MQ_BIN_MODE)) { | |
2750 | config2 = REG_RD(ep->hba, BNX2_MQ_CONFIG2); | |
2751 | first_l4l5 = config2 & BNX2_MQ_CONFIG2_FIRST_L4L5; | |
2752 | ctx_sz = (config2 & BNX2_MQ_CONFIG2_CONT_SZ) >> 3; | |
2753 | if (ctx_sz) | |
2754 | reg_off = CTX_OFFSET + MAX_CID_CNT * MB_KERNEL_CTX_SIZE | |
53203244 | 2755 | + BNX2I_570X_PAGE_SIZE_DEFAULT * |
cf4e6363 MC |
2756 | (((cid_num - first_l4l5) / ctx_sz) + 256); |
2757 | else | |
2758 | reg_off = CTX_OFFSET + (MB_KERNEL_CTX_SIZE * cid_num); | |
2759 | } else | |
2760 | /* 5709 device in normal node and 5706/5708 devices */ | |
2761 | reg_off = CTX_OFFSET + (MB_KERNEL_CTX_SIZE * cid_num); | |
2762 | ||
a7717180 | 2763 | ep->qp.ctx_base = ioremap_nocache(ep->hba->reg_base + reg_off, |
cf4e6363 MC |
2764 | MB_KERNEL_CTX_SIZE); |
2765 | if (!ep->qp.ctx_base) | |
2766 | return -ENOMEM; | |
2767 | ||
2768 | arm_cq: | |
2769 | bnx2i_arm_cq_event_coalescing(ep, CNIC_ARM_CQE); | |
2770 | return 0; | |
2771 | } |