1 /* bnx2fc_hwi.c: QLogic Linux FCoE offload driver.
2 * This file contains the code that low level functions that interact
3 * with 57712 FCoE firmware.
4 *
5 * Copyright (c) 2008-2013 Broadcom Corporation
6 * Copyright (c) 2014-2016 QLogic Corporation
7 * Copyright (c) 2016-2017 Cavium Inc.
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation.
12 *
13 * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
14 */
15
16 #include "bnx2fc.h"
17
18 DECLARE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu);
19
20 static void bnx2fc_fastpath_notification(struct bnx2fc_hba *hba,
21 struct fcoe_kcqe *new_cqe_kcqe);
22 static void bnx2fc_process_ofld_cmpl(struct bnx2fc_hba *hba,
23 struct fcoe_kcqe *ofld_kcqe);
24 static void bnx2fc_process_enable_conn_cmpl(struct bnx2fc_hba *hba,
25 struct fcoe_kcqe *ofld_kcqe);
26 static void bnx2fc_init_failure(struct bnx2fc_hba *hba, u32 err_code);
27 static void bnx2fc_process_conn_destroy_cmpl(struct bnx2fc_hba *hba,
28 struct fcoe_kcqe *destroy_kcqe);
29
bnx2fc_send_stat_req(struct bnx2fc_hba * hba)30 int bnx2fc_send_stat_req(struct bnx2fc_hba *hba)
31 {
32 struct fcoe_kwqe_stat stat_req;
33 struct kwqe *kwqe_arr[2];
34 int num_kwqes = 1;
35 int rc = 0;
36
37 memset(&stat_req, 0x00, sizeof(struct fcoe_kwqe_stat));
38 stat_req.hdr.op_code = FCOE_KWQE_OPCODE_STAT;
39 stat_req.hdr.flags =
40 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
41
42 stat_req.stat_params_addr_lo = (u32) hba->stats_buf_dma;
43 stat_req.stat_params_addr_hi = (u32) ((u64)hba->stats_buf_dma >> 32);
44
45 kwqe_arr[0] = (struct kwqe *) &stat_req;
46
47 if (hba->cnic && hba->cnic->submit_kwqes)
48 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
49
50 return rc;
51 }
52
53 /**
54 * bnx2fc_send_fw_fcoe_init_msg - initiates initial handshake with FCoE f/w
55 *
56 * @hba: adapter structure pointer
57 *
58 * Send down FCoE firmware init KWQEs which initiates the initial handshake
59 * with the f/w.
60 *
61 */
bnx2fc_send_fw_fcoe_init_msg(struct bnx2fc_hba * hba)62 int bnx2fc_send_fw_fcoe_init_msg(struct bnx2fc_hba *hba)
63 {
64 struct fcoe_kwqe_init1 fcoe_init1;
65 struct fcoe_kwqe_init2 fcoe_init2;
66 struct fcoe_kwqe_init3 fcoe_init3;
67 struct kwqe *kwqe_arr[3];
68 int num_kwqes = 3;
69 int rc = 0;
70
71 if (!hba->cnic) {
72 printk(KERN_ERR PFX "hba->cnic NULL during fcoe fw init\n");
73 return -ENODEV;
74 }
75
76 /* fill init1 KWQE */
77 memset(&fcoe_init1, 0x00, sizeof(struct fcoe_kwqe_init1));
78 fcoe_init1.hdr.op_code = FCOE_KWQE_OPCODE_INIT1;
79 fcoe_init1.hdr.flags = (FCOE_KWQE_LAYER_CODE <<
80 FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
81
82 fcoe_init1.num_tasks = hba->max_tasks;
83 fcoe_init1.sq_num_wqes = BNX2FC_SQ_WQES_MAX;
84 fcoe_init1.rq_num_wqes = BNX2FC_RQ_WQES_MAX;
85 fcoe_init1.rq_buffer_log_size = BNX2FC_RQ_BUF_LOG_SZ;
86 fcoe_init1.cq_num_wqes = BNX2FC_CQ_WQES_MAX;
87 fcoe_init1.dummy_buffer_addr_lo = (u32) hba->dummy_buf_dma;
88 fcoe_init1.dummy_buffer_addr_hi = (u32) ((u64)hba->dummy_buf_dma >> 32);
89 fcoe_init1.task_list_pbl_addr_lo = (u32) hba->task_ctx_bd_dma;
90 fcoe_init1.task_list_pbl_addr_hi =
91 (u32) ((u64) hba->task_ctx_bd_dma >> 32);
92 fcoe_init1.mtu = BNX2FC_MINI_JUMBO_MTU;
93
94 fcoe_init1.flags = (PAGE_SHIFT <<
95 FCOE_KWQE_INIT1_LOG_PAGE_SIZE_SHIFT);
96
97 fcoe_init1.num_sessions_log = BNX2FC_NUM_MAX_SESS_LOG;
98
99 /* fill init2 KWQE */
100 memset(&fcoe_init2, 0x00, sizeof(struct fcoe_kwqe_init2));
101 fcoe_init2.hdr.op_code = FCOE_KWQE_OPCODE_INIT2;
102 fcoe_init2.hdr.flags = (FCOE_KWQE_LAYER_CODE <<
103 FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
104
105 fcoe_init2.hsi_major_version = FCOE_HSI_MAJOR_VERSION;
106 fcoe_init2.hsi_minor_version = FCOE_HSI_MINOR_VERSION;
107
108
109 fcoe_init2.hash_tbl_pbl_addr_lo = (u32) hba->hash_tbl_pbl_dma;
110 fcoe_init2.hash_tbl_pbl_addr_hi = (u32)
111 ((u64) hba->hash_tbl_pbl_dma >> 32);
112
113 fcoe_init2.t2_hash_tbl_addr_lo = (u32) hba->t2_hash_tbl_dma;
114 fcoe_init2.t2_hash_tbl_addr_hi = (u32)
115 ((u64) hba->t2_hash_tbl_dma >> 32);
116
117 fcoe_init2.t2_ptr_hash_tbl_addr_lo = (u32) hba->t2_hash_tbl_ptr_dma;
118 fcoe_init2.t2_ptr_hash_tbl_addr_hi = (u32)
119 ((u64) hba->t2_hash_tbl_ptr_dma >> 32);
120
121 fcoe_init2.free_list_count = BNX2FC_NUM_MAX_SESS;
122
123 /* fill init3 KWQE */
124 memset(&fcoe_init3, 0x00, sizeof(struct fcoe_kwqe_init3));
125 fcoe_init3.hdr.op_code = FCOE_KWQE_OPCODE_INIT3;
126 fcoe_init3.hdr.flags = (FCOE_KWQE_LAYER_CODE <<
127 FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
128 fcoe_init3.error_bit_map_lo = 0xffffffff;
129 fcoe_init3.error_bit_map_hi = 0xffffffff;
130
131 /*
132 * enable both cached connection and cached tasks
133 * 0 = none, 1 = cached connection, 2 = cached tasks, 3 = both
134 */
135 fcoe_init3.perf_config = 3;
136
137 kwqe_arr[0] = (struct kwqe *) &fcoe_init1;
138 kwqe_arr[1] = (struct kwqe *) &fcoe_init2;
139 kwqe_arr[2] = (struct kwqe *) &fcoe_init3;
140
141 if (hba->cnic && hba->cnic->submit_kwqes)
142 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
143
144 return rc;
145 }
bnx2fc_send_fw_fcoe_destroy_msg(struct bnx2fc_hba * hba)146 int bnx2fc_send_fw_fcoe_destroy_msg(struct bnx2fc_hba *hba)
147 {
148 struct fcoe_kwqe_destroy fcoe_destroy;
149 struct kwqe *kwqe_arr[2];
150 int num_kwqes = 1;
151 int rc = -1;
152
153 /* fill destroy KWQE */
154 memset(&fcoe_destroy, 0x00, sizeof(struct fcoe_kwqe_destroy));
155 fcoe_destroy.hdr.op_code = FCOE_KWQE_OPCODE_DESTROY;
156 fcoe_destroy.hdr.flags = (FCOE_KWQE_LAYER_CODE <<
157 FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
158 kwqe_arr[0] = (struct kwqe *) &fcoe_destroy;
159
160 if (hba->cnic && hba->cnic->submit_kwqes)
161 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
162 return rc;
163 }
164
165 /**
166 * bnx2fc_send_session_ofld_req - initiates FCoE Session offload process
167 *
168 * @port: port structure pointer
169 * @tgt: bnx2fc_rport structure pointer
170 */
bnx2fc_send_session_ofld_req(struct fcoe_port * port,struct bnx2fc_rport * tgt)171 int bnx2fc_send_session_ofld_req(struct fcoe_port *port,
172 struct bnx2fc_rport *tgt)
173 {
174 struct fc_lport *lport = port->lport;
175 struct bnx2fc_interface *interface = port->priv;
176 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
177 struct bnx2fc_hba *hba = interface->hba;
178 struct kwqe *kwqe_arr[4];
179 struct fcoe_kwqe_conn_offload1 ofld_req1;
180 struct fcoe_kwqe_conn_offload2 ofld_req2;
181 struct fcoe_kwqe_conn_offload3 ofld_req3;
182 struct fcoe_kwqe_conn_offload4 ofld_req4;
183 struct fc_rport_priv *rdata = tgt->rdata;
184 struct fc_rport *rport = tgt->rport;
185 int num_kwqes = 4;
186 u32 port_id;
187 int rc = 0;
188 u16 conn_id;
189
190 /* Initialize offload request 1 structure */
191 memset(&ofld_req1, 0x00, sizeof(struct fcoe_kwqe_conn_offload1));
192
193 ofld_req1.hdr.op_code = FCOE_KWQE_OPCODE_OFFLOAD_CONN1;
194 ofld_req1.hdr.flags =
195 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
196
197
198 conn_id = (u16)tgt->fcoe_conn_id;
199 ofld_req1.fcoe_conn_id = conn_id;
200
201
202 ofld_req1.sq_addr_lo = (u32) tgt->sq_dma;
203 ofld_req1.sq_addr_hi = (u32)((u64) tgt->sq_dma >> 32);
204
205 ofld_req1.rq_pbl_addr_lo = (u32) tgt->rq_pbl_dma;
206 ofld_req1.rq_pbl_addr_hi = (u32)((u64) tgt->rq_pbl_dma >> 32);
207
208 ofld_req1.rq_first_pbe_addr_lo = (u32) tgt->rq_dma;
209 ofld_req1.rq_first_pbe_addr_hi =
210 (u32)((u64) tgt->rq_dma >> 32);
211
212 ofld_req1.rq_prod = 0x8000;
213
214 /* Initialize offload request 2 structure */
215 memset(&ofld_req2, 0x00, sizeof(struct fcoe_kwqe_conn_offload2));
216
217 ofld_req2.hdr.op_code = FCOE_KWQE_OPCODE_OFFLOAD_CONN2;
218 ofld_req2.hdr.flags =
219 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
220
221 ofld_req2.tx_max_fc_pay_len = rdata->maxframe_size;
222
223 ofld_req2.cq_addr_lo = (u32) tgt->cq_dma;
224 ofld_req2.cq_addr_hi = (u32)((u64)tgt->cq_dma >> 32);
225
226 ofld_req2.xferq_addr_lo = (u32) tgt->xferq_dma;
227 ofld_req2.xferq_addr_hi = (u32)((u64)tgt->xferq_dma >> 32);
228
229 ofld_req2.conn_db_addr_lo = (u32)tgt->conn_db_dma;
230 ofld_req2.conn_db_addr_hi = (u32)((u64)tgt->conn_db_dma >> 32);
231
232 /* Initialize offload request 3 structure */
233 memset(&ofld_req3, 0x00, sizeof(struct fcoe_kwqe_conn_offload3));
234
235 ofld_req3.hdr.op_code = FCOE_KWQE_OPCODE_OFFLOAD_CONN3;
236 ofld_req3.hdr.flags =
237 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
238
239 ofld_req3.vlan_tag = interface->vlan_id <<
240 FCOE_KWQE_CONN_OFFLOAD3_VLAN_ID_SHIFT;
241 ofld_req3.vlan_tag |= 3 << FCOE_KWQE_CONN_OFFLOAD3_PRIORITY_SHIFT;
242
243 port_id = fc_host_port_id(lport->host);
244 if (port_id == 0) {
245 BNX2FC_HBA_DBG(lport, "ofld_req: port_id = 0, link down?\n");
246 return -EINVAL;
247 }
248
249 /*
250 * Store s_id of the initiator for further reference. This will
251 * be used during disable/destroy during linkdown processing as
252 * when the lport is reset, the port_id also is reset to 0
253 */
254 tgt->sid = port_id;
255 ofld_req3.s_id[0] = (port_id & 0x000000FF);
256 ofld_req3.s_id[1] = (port_id & 0x0000FF00) >> 8;
257 ofld_req3.s_id[2] = (port_id & 0x00FF0000) >> 16;
258
259 port_id = rport->port_id;
260 ofld_req3.d_id[0] = (port_id & 0x000000FF);
261 ofld_req3.d_id[1] = (port_id & 0x0000FF00) >> 8;
262 ofld_req3.d_id[2] = (port_id & 0x00FF0000) >> 16;
263
264 ofld_req3.tx_total_conc_seqs = rdata->max_seq;
265
266 ofld_req3.tx_max_conc_seqs_c3 = rdata->max_seq;
267 ofld_req3.rx_max_fc_pay_len = lport->mfs;
268
269 ofld_req3.rx_total_conc_seqs = BNX2FC_MAX_SEQS;
270 ofld_req3.rx_max_conc_seqs_c3 = BNX2FC_MAX_SEQS;
271 ofld_req3.rx_open_seqs_exch_c3 = 1;
272
273 ofld_req3.confq_first_pbe_addr_lo = tgt->confq_dma;
274 ofld_req3.confq_first_pbe_addr_hi = (u32)((u64) tgt->confq_dma >> 32);
275
276 /* set mul_n_port_ids supported flag to 0, until it is supported */
277 ofld_req3.flags = 0;
278 /*
279 ofld_req3.flags |= (((lport->send_sp_features & FC_SP_FT_MNA) ? 1:0) <<
280 FCOE_KWQE_CONN_OFFLOAD3_B_MUL_N_PORT_IDS_SHIFT);
281 */
282 /* Info from PLOGI response */
283 ofld_req3.flags |= (((rdata->sp_features & FC_SP_FT_EDTR) ? 1 : 0) <<
284 FCOE_KWQE_CONN_OFFLOAD3_B_E_D_TOV_RES_SHIFT);
285
286 ofld_req3.flags |= (((rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
287 FCOE_KWQE_CONN_OFFLOAD3_B_CONT_INCR_SEQ_CNT_SHIFT);
288
289 /*
290 * Info from PRLI response, this info is used for sequence level error
291 * recovery support
292 */
293 if (tgt->dev_type == TYPE_TAPE) {
294 ofld_req3.flags |= 1 <<
295 FCOE_KWQE_CONN_OFFLOAD3_B_CONF_REQ_SHIFT;
296 ofld_req3.flags |= (((rdata->flags & FC_RP_FLAGS_REC_SUPPORTED)
297 ? 1 : 0) <<
298 FCOE_KWQE_CONN_OFFLOAD3_B_REC_VALID_SHIFT);
299 }
300
301 /* vlan flag */
302 ofld_req3.flags |= (interface->vlan_enabled <<
303 FCOE_KWQE_CONN_OFFLOAD3_B_VLAN_FLAG_SHIFT);
304
305 /* C2_VALID and ACK flags are not set as they are not supported */
306
307
308 /* Initialize offload request 4 structure */
309 memset(&ofld_req4, 0x00, sizeof(struct fcoe_kwqe_conn_offload4));
310 ofld_req4.hdr.op_code = FCOE_KWQE_OPCODE_OFFLOAD_CONN4;
311 ofld_req4.hdr.flags =
312 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
313
314 ofld_req4.e_d_tov_timer_val = lport->e_d_tov / 20;
315
316
317 ofld_req4.src_mac_addr_lo[0] = port->data_src_addr[5];
318 /* local mac */
319 ofld_req4.src_mac_addr_lo[1] = port->data_src_addr[4];
320 ofld_req4.src_mac_addr_mid[0] = port->data_src_addr[3];
321 ofld_req4.src_mac_addr_mid[1] = port->data_src_addr[2];
322 ofld_req4.src_mac_addr_hi[0] = port->data_src_addr[1];
323 ofld_req4.src_mac_addr_hi[1] = port->data_src_addr[0];
324 ofld_req4.dst_mac_addr_lo[0] = ctlr->dest_addr[5];
325 /* fcf mac */
326 ofld_req4.dst_mac_addr_lo[1] = ctlr->dest_addr[4];
327 ofld_req4.dst_mac_addr_mid[0] = ctlr->dest_addr[3];
328 ofld_req4.dst_mac_addr_mid[1] = ctlr->dest_addr[2];
329 ofld_req4.dst_mac_addr_hi[0] = ctlr->dest_addr[1];
330 ofld_req4.dst_mac_addr_hi[1] = ctlr->dest_addr[0];
331
332 ofld_req4.lcq_addr_lo = (u32) tgt->lcq_dma;
333 ofld_req4.lcq_addr_hi = (u32)((u64) tgt->lcq_dma >> 32);
334
335 ofld_req4.confq_pbl_base_addr_lo = (u32) tgt->confq_pbl_dma;
336 ofld_req4.confq_pbl_base_addr_hi =
337 (u32)((u64) tgt->confq_pbl_dma >> 32);
338
339 kwqe_arr[0] = (struct kwqe *) &ofld_req1;
340 kwqe_arr[1] = (struct kwqe *) &ofld_req2;
341 kwqe_arr[2] = (struct kwqe *) &ofld_req3;
342 kwqe_arr[3] = (struct kwqe *) &ofld_req4;
343
344 if (hba->cnic && hba->cnic->submit_kwqes)
345 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
346
347 return rc;
348 }
349
350 /**
351 * bnx2fc_send_session_enable_req - initiates FCoE Session enablement
352 *
353 * @port: port structure pointer
354 * @tgt: bnx2fc_rport structure pointer
355 */
bnx2fc_send_session_enable_req(struct fcoe_port * port,struct bnx2fc_rport * tgt)356 int bnx2fc_send_session_enable_req(struct fcoe_port *port,
357 struct bnx2fc_rport *tgt)
358 {
359 struct kwqe *kwqe_arr[2];
360 struct bnx2fc_interface *interface = port->priv;
361 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
362 struct bnx2fc_hba *hba = interface->hba;
363 struct fcoe_kwqe_conn_enable_disable enbl_req;
364 struct fc_lport *lport = port->lport;
365 struct fc_rport *rport = tgt->rport;
366 int num_kwqes = 1;
367 int rc = 0;
368 u32 port_id;
369
370 memset(&enbl_req, 0x00,
371 sizeof(struct fcoe_kwqe_conn_enable_disable));
372 enbl_req.hdr.op_code = FCOE_KWQE_OPCODE_ENABLE_CONN;
373 enbl_req.hdr.flags =
374 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
375
376 enbl_req.src_mac_addr_lo[0] = port->data_src_addr[5];
377 /* local mac */
378 enbl_req.src_mac_addr_lo[1] = port->data_src_addr[4];
379 enbl_req.src_mac_addr_mid[0] = port->data_src_addr[3];
380 enbl_req.src_mac_addr_mid[1] = port->data_src_addr[2];
381 enbl_req.src_mac_addr_hi[0] = port->data_src_addr[1];
382 enbl_req.src_mac_addr_hi[1] = port->data_src_addr[0];
383 memcpy(tgt->src_addr, port->data_src_addr, ETH_ALEN);
384
385 enbl_req.dst_mac_addr_lo[0] = ctlr->dest_addr[5];
386 enbl_req.dst_mac_addr_lo[1] = ctlr->dest_addr[4];
387 enbl_req.dst_mac_addr_mid[0] = ctlr->dest_addr[3];
388 enbl_req.dst_mac_addr_mid[1] = ctlr->dest_addr[2];
389 enbl_req.dst_mac_addr_hi[0] = ctlr->dest_addr[1];
390 enbl_req.dst_mac_addr_hi[1] = ctlr->dest_addr[0];
391
392 port_id = fc_host_port_id(lport->host);
393 if (port_id != tgt->sid) {
394 printk(KERN_ERR PFX "WARN: enable_req port_id = 0x%x,"
395 "sid = 0x%x\n", port_id, tgt->sid);
396 port_id = tgt->sid;
397 }
398 enbl_req.s_id[0] = (port_id & 0x000000FF);
399 enbl_req.s_id[1] = (port_id & 0x0000FF00) >> 8;
400 enbl_req.s_id[2] = (port_id & 0x00FF0000) >> 16;
401
402 port_id = rport->port_id;
403 enbl_req.d_id[0] = (port_id & 0x000000FF);
404 enbl_req.d_id[1] = (port_id & 0x0000FF00) >> 8;
405 enbl_req.d_id[2] = (port_id & 0x00FF0000) >> 16;
406 enbl_req.vlan_tag = interface->vlan_id <<
407 FCOE_KWQE_CONN_ENABLE_DISABLE_VLAN_ID_SHIFT;
408 enbl_req.vlan_tag |= 3 << FCOE_KWQE_CONN_ENABLE_DISABLE_PRIORITY_SHIFT;
409 enbl_req.vlan_flag = interface->vlan_enabled;
410 enbl_req.context_id = tgt->context_id;
411 enbl_req.conn_id = tgt->fcoe_conn_id;
412
413 kwqe_arr[0] = (struct kwqe *) &enbl_req;
414
415 if (hba->cnic && hba->cnic->submit_kwqes)
416 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
417 return rc;
418 }
419
420 /**
421 * bnx2fc_send_session_disable_req - initiates FCoE Session disable
422 *
423 * @port: port structure pointer
424 * @tgt: bnx2fc_rport structure pointer
425 */
bnx2fc_send_session_disable_req(struct fcoe_port * port,struct bnx2fc_rport * tgt)426 int bnx2fc_send_session_disable_req(struct fcoe_port *port,
427 struct bnx2fc_rport *tgt)
428 {
429 struct bnx2fc_interface *interface = port->priv;
430 struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
431 struct bnx2fc_hba *hba = interface->hba;
432 struct fcoe_kwqe_conn_enable_disable disable_req;
433 struct kwqe *kwqe_arr[2];
434 struct fc_rport *rport = tgt->rport;
435 int num_kwqes = 1;
436 int rc = 0;
437 u32 port_id;
438
439 memset(&disable_req, 0x00,
440 sizeof(struct fcoe_kwqe_conn_enable_disable));
441 disable_req.hdr.op_code = FCOE_KWQE_OPCODE_DISABLE_CONN;
442 disable_req.hdr.flags =
443 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
444
445 disable_req.src_mac_addr_lo[0] = tgt->src_addr[5];
446 disable_req.src_mac_addr_lo[1] = tgt->src_addr[4];
447 disable_req.src_mac_addr_mid[0] = tgt->src_addr[3];
448 disable_req.src_mac_addr_mid[1] = tgt->src_addr[2];
449 disable_req.src_mac_addr_hi[0] = tgt->src_addr[1];
450 disable_req.src_mac_addr_hi[1] = tgt->src_addr[0];
451
452 disable_req.dst_mac_addr_lo[0] = ctlr->dest_addr[5];
453 disable_req.dst_mac_addr_lo[1] = ctlr->dest_addr[4];
454 disable_req.dst_mac_addr_mid[0] = ctlr->dest_addr[3];
455 disable_req.dst_mac_addr_mid[1] = ctlr->dest_addr[2];
456 disable_req.dst_mac_addr_hi[0] = ctlr->dest_addr[1];
457 disable_req.dst_mac_addr_hi[1] = ctlr->dest_addr[0];
458
459 port_id = tgt->sid;
460 disable_req.s_id[0] = (port_id & 0x000000FF);
461 disable_req.s_id[1] = (port_id & 0x0000FF00) >> 8;
462 disable_req.s_id[2] = (port_id & 0x00FF0000) >> 16;
463
464
465 port_id = rport->port_id;
466 disable_req.d_id[0] = (port_id & 0x000000FF);
467 disable_req.d_id[1] = (port_id & 0x0000FF00) >> 8;
468 disable_req.d_id[2] = (port_id & 0x00FF0000) >> 16;
469 disable_req.context_id = tgt->context_id;
470 disable_req.conn_id = tgt->fcoe_conn_id;
471 disable_req.vlan_tag = interface->vlan_id <<
472 FCOE_KWQE_CONN_ENABLE_DISABLE_VLAN_ID_SHIFT;
473 disable_req.vlan_tag |=
474 3 << FCOE_KWQE_CONN_ENABLE_DISABLE_PRIORITY_SHIFT;
475 disable_req.vlan_flag = interface->vlan_enabled;
476
477 kwqe_arr[0] = (struct kwqe *) &disable_req;
478
479 if (hba->cnic && hba->cnic->submit_kwqes)
480 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
481
482 return rc;
483 }
484
485 /**
486 * bnx2fc_send_session_destroy_req - initiates FCoE Session destroy
487 *
488 * @port: port structure pointer
489 * @tgt: bnx2fc_rport structure pointer
490 */
bnx2fc_send_session_destroy_req(struct bnx2fc_hba * hba,struct bnx2fc_rport * tgt)491 int bnx2fc_send_session_destroy_req(struct bnx2fc_hba *hba,
492 struct bnx2fc_rport *tgt)
493 {
494 struct fcoe_kwqe_conn_destroy destroy_req;
495 struct kwqe *kwqe_arr[2];
496 int num_kwqes = 1;
497 int rc = 0;
498
499 memset(&destroy_req, 0x00, sizeof(struct fcoe_kwqe_conn_destroy));
500 destroy_req.hdr.op_code = FCOE_KWQE_OPCODE_DESTROY_CONN;
501 destroy_req.hdr.flags =
502 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
503
504 destroy_req.context_id = tgt->context_id;
505 destroy_req.conn_id = tgt->fcoe_conn_id;
506
507 kwqe_arr[0] = (struct kwqe *) &destroy_req;
508
509 if (hba->cnic && hba->cnic->submit_kwqes)
510 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
511
512 return rc;
513 }
514
is_valid_lport(struct bnx2fc_hba * hba,struct fc_lport * lport)515 static bool is_valid_lport(struct bnx2fc_hba *hba, struct fc_lport *lport)
516 {
517 struct bnx2fc_lport *blport;
518
519 spin_lock_bh(&hba->hba_lock);
520 list_for_each_entry(blport, &hba->vports, list) {
521 if (blport->lport == lport) {
522 spin_unlock_bh(&hba->hba_lock);
523 return true;
524 }
525 }
526 spin_unlock_bh(&hba->hba_lock);
527 return false;
528
529 }
530
531
bnx2fc_unsol_els_work(struct work_struct * work)532 static void bnx2fc_unsol_els_work(struct work_struct *work)
533 {
534 struct bnx2fc_unsol_els *unsol_els;
535 struct fc_lport *lport;
536 struct bnx2fc_hba *hba;
537 struct fc_frame *fp;
538
539 unsol_els = container_of(work, struct bnx2fc_unsol_els, unsol_els_work);
540 lport = unsol_els->lport;
541 fp = unsol_els->fp;
542 hba = unsol_els->hba;
543 if (is_valid_lport(hba, lport))
544 fc_exch_recv(lport, fp);
545 kfree(unsol_els);
546 }
547
bnx2fc_process_l2_frame_compl(struct bnx2fc_rport * tgt,unsigned char * buf,u32 frame_len,u16 l2_oxid)548 void bnx2fc_process_l2_frame_compl(struct bnx2fc_rport *tgt,
549 unsigned char *buf,
550 u32 frame_len, u16 l2_oxid)
551 {
552 struct fcoe_port *port = tgt->port;
553 struct fc_lport *lport = port->lport;
554 struct bnx2fc_interface *interface = port->priv;
555 struct bnx2fc_unsol_els *unsol_els;
556 struct fc_frame_header *fh;
557 struct fc_frame *fp;
558 struct sk_buff *skb;
559 u32 payload_len;
560 u32 crc;
561 u8 op;
562
563
564 unsol_els = kzalloc(sizeof(*unsol_els), GFP_ATOMIC);
565 if (!unsol_els) {
566 BNX2FC_TGT_DBG(tgt, "Unable to allocate unsol_work\n");
567 return;
568 }
569
570 BNX2FC_TGT_DBG(tgt, "l2_frame_compl l2_oxid = 0x%x, frame_len = %d\n",
571 l2_oxid, frame_len);
572
573 payload_len = frame_len - sizeof(struct fc_frame_header);
574
575 fp = fc_frame_alloc(lport, payload_len);
576 if (!fp) {
577 printk(KERN_ERR PFX "fc_frame_alloc failure\n");
578 kfree(unsol_els);
579 return;
580 }
581
582 fh = (struct fc_frame_header *) fc_frame_header_get(fp);
583 /* Copy FC Frame header and payload into the frame */
584 memcpy(fh, buf, frame_len);
585
586 if (l2_oxid != FC_XID_UNKNOWN)
587 fh->fh_ox_id = htons(l2_oxid);
588
589 skb = fp_skb(fp);
590
591 if ((fh->fh_r_ctl == FC_RCTL_ELS_REQ) ||
592 (fh->fh_r_ctl == FC_RCTL_ELS_REP)) {
593
594 if (fh->fh_type == FC_TYPE_ELS) {
595 op = fc_frame_payload_op(fp);
596 if ((op == ELS_TEST) || (op == ELS_ESTC) ||
597 (op == ELS_FAN) || (op == ELS_CSU)) {
598 /*
599 * No need to reply for these
600 * ELS requests
601 */
602 printk(KERN_ERR PFX "dropping ELS 0x%x\n", op);
603 kfree_skb(skb);
604 kfree(unsol_els);
605 return;
606 }
607 }
608 crc = fcoe_fc_crc(fp);
609 fc_frame_init(fp);
610 fr_dev(fp) = lport;
611 fr_sof(fp) = FC_SOF_I3;
612 fr_eof(fp) = FC_EOF_T;
613 fr_crc(fp) = cpu_to_le32(~crc);
614 unsol_els->lport = lport;
615 unsol_els->hba = interface->hba;
616 unsol_els->fp = fp;
617 INIT_WORK(&unsol_els->unsol_els_work, bnx2fc_unsol_els_work);
618 queue_work(bnx2fc_wq, &unsol_els->unsol_els_work);
619 } else {
620 BNX2FC_HBA_DBG(lport, "fh_r_ctl = 0x%x\n", fh->fh_r_ctl);
621 kfree_skb(skb);
622 kfree(unsol_els);
623 }
624 }
625
bnx2fc_process_unsol_compl(struct bnx2fc_rport * tgt,u16 wqe)626 static void bnx2fc_process_unsol_compl(struct bnx2fc_rport *tgt, u16 wqe)
627 {
628 u8 num_rq;
629 struct fcoe_err_report_entry *err_entry;
630 unsigned char *rq_data;
631 unsigned char *buf = NULL, *buf1;
632 int i;
633 u16 xid;
634 u32 frame_len, len;
635 struct bnx2fc_cmd *io_req = NULL;
636 struct bnx2fc_interface *interface = tgt->port->priv;
637 struct bnx2fc_hba *hba = interface->hba;
638 int task_idx, index;
639 int rc = 0;
640 u64 err_warn_bit_map;
641 u8 err_warn = 0xff;
642
643
644 BNX2FC_TGT_DBG(tgt, "Entered UNSOL COMPLETION wqe = 0x%x\n", wqe);
645 switch (wqe & FCOE_UNSOLICITED_CQE_SUBTYPE) {
646 case FCOE_UNSOLICITED_FRAME_CQE_TYPE:
647 frame_len = (wqe & FCOE_UNSOLICITED_CQE_PKT_LEN) >>
648 FCOE_UNSOLICITED_CQE_PKT_LEN_SHIFT;
649
650 num_rq = (frame_len + BNX2FC_RQ_BUF_SZ - 1) / BNX2FC_RQ_BUF_SZ;
651
652 spin_lock_bh(&tgt->tgt_lock);
653 rq_data = (unsigned char *)bnx2fc_get_next_rqe(tgt, num_rq);
654 spin_unlock_bh(&tgt->tgt_lock);
655
656 if (rq_data) {
657 buf = rq_data;
658 } else {
659 buf1 = buf = kmalloc((num_rq * BNX2FC_RQ_BUF_SZ),
660 GFP_ATOMIC);
661
662 if (!buf1) {
663 BNX2FC_TGT_DBG(tgt, "Memory alloc failure\n");
664 break;
665 }
666
667 for (i = 0; i < num_rq; i++) {
668 spin_lock_bh(&tgt->tgt_lock);
669 rq_data = (unsigned char *)
670 bnx2fc_get_next_rqe(tgt, 1);
671 spin_unlock_bh(&tgt->tgt_lock);
672 len = BNX2FC_RQ_BUF_SZ;
673 memcpy(buf1, rq_data, len);
674 buf1 += len;
675 }
676 }
677 bnx2fc_process_l2_frame_compl(tgt, buf, frame_len,
678 FC_XID_UNKNOWN);
679
680 if (buf != rq_data)
681 kfree(buf);
682 spin_lock_bh(&tgt->tgt_lock);
683 bnx2fc_return_rqe(tgt, num_rq);
684 spin_unlock_bh(&tgt->tgt_lock);
685 break;
686
687 case FCOE_ERROR_DETECTION_CQE_TYPE:
688 /*
689 * In case of error reporting CQE a single RQ entry
690 * is consumed.
691 */
692 spin_lock_bh(&tgt->tgt_lock);
693 num_rq = 1;
694 err_entry = (struct fcoe_err_report_entry *)
695 bnx2fc_get_next_rqe(tgt, 1);
696 xid = err_entry->fc_hdr.ox_id;
697 BNX2FC_TGT_DBG(tgt, "Unsol Error Frame OX_ID = 0x%x\n", xid);
698 BNX2FC_TGT_DBG(tgt, "err_warn_bitmap = %08x:%08x\n",
699 err_entry->data.err_warn_bitmap_hi,
700 err_entry->data.err_warn_bitmap_lo);
701 BNX2FC_TGT_DBG(tgt, "buf_offsets - tx = 0x%x, rx = 0x%x\n",
702 err_entry->data.tx_buf_off, err_entry->data.rx_buf_off);
703
704
705 if (xid > hba->max_xid) {
706 BNX2FC_TGT_DBG(tgt, "xid(0x%x) out of FW range\n",
707 xid);
708 goto ret_err_rqe;
709 }
710
711 task_idx = xid / BNX2FC_TASKS_PER_PAGE;
712 index = xid % BNX2FC_TASKS_PER_PAGE;
713
714 io_req = (struct bnx2fc_cmd *)hba->cmd_mgr->cmds[xid];
715 if (!io_req)
716 goto ret_err_rqe;
717
718 if (io_req->cmd_type != BNX2FC_SCSI_CMD) {
719 printk(KERN_ERR PFX "err_warn: Not a SCSI cmd\n");
720 goto ret_err_rqe;
721 }
722
723 if (test_and_clear_bit(BNX2FC_FLAG_IO_CLEANUP,
724 &io_req->req_flags)) {
725 BNX2FC_IO_DBG(io_req, "unsol_err: cleanup in "
726 "progress.. ignore unsol err\n");
727 goto ret_err_rqe;
728 }
729
730 err_warn_bit_map = (u64)
731 ((u64)err_entry->data.err_warn_bitmap_hi << 32) |
732 (u64)err_entry->data.err_warn_bitmap_lo;
733 for (i = 0; i < BNX2FC_NUM_ERR_BITS; i++) {
734 if (err_warn_bit_map & (u64)((u64)1 << i)) {
735 err_warn = i;
736 break;
737 }
738 }
739
740 /*
741 * If ABTS is already in progress, and FW error is
742 * received after that, do not cancel the timeout_work
743 * and let the error recovery continue by explicitly
744 * logging out the target, when the ABTS eventually
745 * times out.
746 */
747 if (test_bit(BNX2FC_FLAG_ISSUE_ABTS, &io_req->req_flags)) {
748 printk(KERN_ERR PFX "err_warn: io_req (0x%x) already "
749 "in ABTS processing\n", xid);
750 goto ret_err_rqe;
751 }
752 BNX2FC_TGT_DBG(tgt, "err = 0x%x\n", err_warn);
753 if (tgt->dev_type != TYPE_TAPE)
754 goto skip_rec;
755 switch (err_warn) {
756 case FCOE_ERROR_CODE_REC_TOV_TIMER_EXPIRATION:
757 case FCOE_ERROR_CODE_DATA_OOO_RO:
758 case FCOE_ERROR_CODE_COMMON_INCORRECT_SEQ_CNT:
759 case FCOE_ERROR_CODE_DATA_SOFI3_SEQ_ACTIVE_SET:
760 case FCOE_ERROR_CODE_FCP_RSP_OPENED_SEQ:
761 case FCOE_ERROR_CODE_DATA_SOFN_SEQ_ACTIVE_RESET:
762 BNX2FC_TGT_DBG(tgt, "REC TOV popped for xid - 0x%x\n",
763 xid);
764 memcpy(&io_req->err_entry, err_entry,
765 sizeof(struct fcoe_err_report_entry));
766 if (!test_bit(BNX2FC_FLAG_SRR_SENT,
767 &io_req->req_flags)) {
768 spin_unlock_bh(&tgt->tgt_lock);
769 rc = bnx2fc_send_rec(io_req);
770 spin_lock_bh(&tgt->tgt_lock);
771
772 if (rc)
773 goto skip_rec;
774 } else
775 printk(KERN_ERR PFX "SRR in progress\n");
776 goto ret_err_rqe;
777 break;
778 default:
779 break;
780 }
781
782 skip_rec:
783 set_bit(BNX2FC_FLAG_ISSUE_ABTS, &io_req->req_flags);
784 /*
785 * Cancel the timeout_work, as we received IO
786 * completion with FW error.
787 */
788 if (cancel_delayed_work(&io_req->timeout_work))
789 kref_put(&io_req->refcount, bnx2fc_cmd_release);
790
791 rc = bnx2fc_initiate_abts(io_req);
792 if (rc != SUCCESS) {
793 printk(KERN_ERR PFX "err_warn: initiate_abts "
794 "failed xid = 0x%x. issue cleanup\n",
795 io_req->xid);
796 bnx2fc_initiate_cleanup(io_req);
797 }
798 ret_err_rqe:
799 bnx2fc_return_rqe(tgt, 1);
800 spin_unlock_bh(&tgt->tgt_lock);
801 break;
802
803 case FCOE_WARNING_DETECTION_CQE_TYPE:
804 /*
805 *In case of warning reporting CQE a single RQ entry
806 * is consumes.
807 */
808 spin_lock_bh(&tgt->tgt_lock);
809 num_rq = 1;
810 err_entry = (struct fcoe_err_report_entry *)
811 bnx2fc_get_next_rqe(tgt, 1);
812 xid = cpu_to_be16(err_entry->fc_hdr.ox_id);
813 BNX2FC_TGT_DBG(tgt, "Unsol Warning Frame OX_ID = 0x%x\n", xid);
814 BNX2FC_TGT_DBG(tgt, "err_warn_bitmap = %08x:%08x",
815 err_entry->data.err_warn_bitmap_hi,
816 err_entry->data.err_warn_bitmap_lo);
817 BNX2FC_TGT_DBG(tgt, "buf_offsets - tx = 0x%x, rx = 0x%x",
818 err_entry->data.tx_buf_off, err_entry->data.rx_buf_off);
819
820 if (xid > hba->max_xid) {
821 BNX2FC_TGT_DBG(tgt, "xid(0x%x) out of FW range\n", xid);
822 goto ret_warn_rqe;
823 }
824
825 err_warn_bit_map = (u64)
826 ((u64)err_entry->data.err_warn_bitmap_hi << 32) |
827 (u64)err_entry->data.err_warn_bitmap_lo;
828 for (i = 0; i < BNX2FC_NUM_ERR_BITS; i++) {
829 if (err_warn_bit_map & ((u64)1 << i)) {
830 err_warn = i;
831 break;
832 }
833 }
834 BNX2FC_TGT_DBG(tgt, "warn = 0x%x\n", err_warn);
835
836 task_idx = xid / BNX2FC_TASKS_PER_PAGE;
837 index = xid % BNX2FC_TASKS_PER_PAGE;
838 io_req = (struct bnx2fc_cmd *)hba->cmd_mgr->cmds[xid];
839 if (!io_req)
840 goto ret_warn_rqe;
841
842 if (io_req->cmd_type != BNX2FC_SCSI_CMD) {
843 printk(KERN_ERR PFX "err_warn: Not a SCSI cmd\n");
844 goto ret_warn_rqe;
845 }
846
847 memcpy(&io_req->err_entry, err_entry,
848 sizeof(struct fcoe_err_report_entry));
849
850 if (err_warn == FCOE_ERROR_CODE_REC_TOV_TIMER_EXPIRATION)
851 /* REC_TOV is not a warning code */
852 BUG_ON(1);
853 else
854 BNX2FC_TGT_DBG(tgt, "Unsolicited warning\n");
855 ret_warn_rqe:
856 bnx2fc_return_rqe(tgt, 1);
857 spin_unlock_bh(&tgt->tgt_lock);
858 break;
859
860 default:
861 printk(KERN_ERR PFX "Unsol Compl: Invalid CQE Subtype\n");
862 break;
863 }
864 }
865
bnx2fc_process_cq_compl(struct bnx2fc_rport * tgt,u16 wqe)866 void bnx2fc_process_cq_compl(struct bnx2fc_rport *tgt, u16 wqe)
867 {
868 struct fcoe_task_ctx_entry *task;
869 struct fcoe_task_ctx_entry *task_page;
870 struct fcoe_port *port = tgt->port;
871 struct bnx2fc_interface *interface = port->priv;
872 struct bnx2fc_hba *hba = interface->hba;
873 struct bnx2fc_cmd *io_req;
874 int task_idx, index;
875 u16 xid;
876 u8 cmd_type;
877 u8 rx_state = 0;
878 u8 num_rq;
879
880 spin_lock_bh(&tgt->tgt_lock);
881 xid = wqe & FCOE_PEND_WQ_CQE_TASK_ID;
882 if (xid >= hba->max_tasks) {
883 printk(KERN_ERR PFX "ERROR:xid out of range\n");
884 spin_unlock_bh(&tgt->tgt_lock);
885 return;
886 }
887 task_idx = xid / BNX2FC_TASKS_PER_PAGE;
888 index = xid % BNX2FC_TASKS_PER_PAGE;
889 task_page = (struct fcoe_task_ctx_entry *)hba->task_ctx[task_idx];
890 task = &(task_page[index]);
891
892 num_rq = ((task->rxwr_txrd.var_ctx.rx_flags &
893 FCOE_TCE_RX_WR_TX_RD_VAR_NUM_RQ_WQE) >>
894 FCOE_TCE_RX_WR_TX_RD_VAR_NUM_RQ_WQE_SHIFT);
895
896 io_req = (struct bnx2fc_cmd *)hba->cmd_mgr->cmds[xid];
897
898 if (io_req == NULL) {
899 printk(KERN_ERR PFX "ERROR? cq_compl - io_req is NULL\n");
900 spin_unlock_bh(&tgt->tgt_lock);
901 return;
902 }
903
904 /* Timestamp IO completion time */
905 cmd_type = io_req->cmd_type;
906
907 rx_state = ((task->rxwr_txrd.var_ctx.rx_flags &
908 FCOE_TCE_RX_WR_TX_RD_VAR_RX_STATE) >>
909 FCOE_TCE_RX_WR_TX_RD_VAR_RX_STATE_SHIFT);
910
911 /* Process other IO completion types */
912 switch (cmd_type) {
913 case BNX2FC_SCSI_CMD:
914 if (rx_state == FCOE_TASK_RX_STATE_COMPLETED) {
915 bnx2fc_process_scsi_cmd_compl(io_req, task, num_rq);
916 spin_unlock_bh(&tgt->tgt_lock);
917 return;
918 }
919
920 if (rx_state == FCOE_TASK_RX_STATE_ABTS_COMPLETED)
921 bnx2fc_process_abts_compl(io_req, task, num_rq);
922 else if (rx_state ==
923 FCOE_TASK_RX_STATE_EXCHANGE_CLEANUP_COMPLETED)
924 bnx2fc_process_cleanup_compl(io_req, task, num_rq);
925 else
926 printk(KERN_ERR PFX "Invalid rx state - %d\n",
927 rx_state);
928 break;
929
930 case BNX2FC_TASK_MGMT_CMD:
931 BNX2FC_IO_DBG(io_req, "Processing TM complete\n");
932 bnx2fc_process_tm_compl(io_req, task, num_rq);
933 break;
934
935 case BNX2FC_ABTS:
936 /*
937 * ABTS request received by firmware. ABTS response
938 * will be delivered to the task belonging to the IO
939 * that was aborted
940 */
941 BNX2FC_IO_DBG(io_req, "cq_compl- ABTS sent out by fw\n");
942 kref_put(&io_req->refcount, bnx2fc_cmd_release);
943 break;
944
945 case BNX2FC_ELS:
946 if (rx_state == FCOE_TASK_RX_STATE_COMPLETED)
947 bnx2fc_process_els_compl(io_req, task, num_rq);
948 else if (rx_state == FCOE_TASK_RX_STATE_ABTS_COMPLETED)
949 bnx2fc_process_abts_compl(io_req, task, num_rq);
950 else if (rx_state ==
951 FCOE_TASK_RX_STATE_EXCHANGE_CLEANUP_COMPLETED)
952 bnx2fc_process_cleanup_compl(io_req, task, num_rq);
953 else
954 printk(KERN_ERR PFX "Invalid rx state = %d\n",
955 rx_state);
956 break;
957
958 case BNX2FC_CLEANUP:
959 BNX2FC_IO_DBG(io_req, "cq_compl- cleanup resp rcvd\n");
960 kref_put(&io_req->refcount, bnx2fc_cmd_release);
961 break;
962
963 case BNX2FC_SEQ_CLEANUP:
964 BNX2FC_IO_DBG(io_req, "cq_compl(0x%x) - seq cleanup resp\n",
965 io_req->xid);
966 bnx2fc_process_seq_cleanup_compl(io_req, task, rx_state);
967 kref_put(&io_req->refcount, bnx2fc_cmd_release);
968 break;
969
970 default:
971 printk(KERN_ERR PFX "Invalid cmd_type %d\n", cmd_type);
972 break;
973 }
974 spin_unlock_bh(&tgt->tgt_lock);
975 }
976
bnx2fc_arm_cq(struct bnx2fc_rport * tgt)977 void bnx2fc_arm_cq(struct bnx2fc_rport *tgt)
978 {
979 struct b577xx_fcoe_rx_doorbell *rx_db = &tgt->rx_db;
980 u32 msg;
981
982 wmb();
983 rx_db->doorbell_cq_cons = tgt->cq_cons_idx | (tgt->cq_curr_toggle_bit <<
984 FCOE_CQE_TOGGLE_BIT_SHIFT);
985 msg = *((u32 *)rx_db);
986 writel(cpu_to_le32(msg), tgt->ctx_base);
987
988 }
989
bnx2fc_alloc_work(struct bnx2fc_rport * tgt,u16 wqe)990 static struct bnx2fc_work *bnx2fc_alloc_work(struct bnx2fc_rport *tgt, u16 wqe)
991 {
992 struct bnx2fc_work *work;
993 work = kzalloc(sizeof(struct bnx2fc_work), GFP_ATOMIC);
994 if (!work)
995 return NULL;
996
997 INIT_LIST_HEAD(&work->list);
998 work->tgt = tgt;
999 work->wqe = wqe;
1000 return work;
1001 }
1002
1003 /* Pending work request completion */
bnx2fc_pending_work(struct bnx2fc_rport * tgt,unsigned int wqe)1004 static void bnx2fc_pending_work(struct bnx2fc_rport *tgt, unsigned int wqe)
1005 {
1006 unsigned int cpu = wqe % num_possible_cpus();
1007 struct bnx2fc_percpu_s *fps;
1008 struct bnx2fc_work *work;
1009
1010 fps = &per_cpu(bnx2fc_percpu, cpu);
1011 spin_lock_bh(&fps->fp_work_lock);
1012 if (fps->iothread) {
1013 work = bnx2fc_alloc_work(tgt, wqe);
1014 if (work) {
1015 list_add_tail(&work->list, &fps->work_list);
1016 wake_up_process(fps->iothread);
1017 spin_unlock_bh(&fps->fp_work_lock);
1018 return;
1019 }
1020 }
1021 spin_unlock_bh(&fps->fp_work_lock);
1022 bnx2fc_process_cq_compl(tgt, wqe);
1023 }
1024
bnx2fc_process_new_cqes(struct bnx2fc_rport * tgt)1025 int bnx2fc_process_new_cqes(struct bnx2fc_rport *tgt)
1026 {
1027 struct fcoe_cqe *cq;
1028 u32 cq_cons;
1029 struct fcoe_cqe *cqe;
1030 u32 num_free_sqes = 0;
1031 u32 num_cqes = 0;
1032 u16 wqe;
1033
1034 /*
1035 * cq_lock is a low contention lock used to protect
1036 * the CQ data structure from being freed up during
1037 * the upload operation
1038 */
1039 spin_lock_bh(&tgt->cq_lock);
1040
1041 if (!tgt->cq) {
1042 printk(KERN_ERR PFX "process_new_cqes: cq is NULL\n");
1043 spin_unlock_bh(&tgt->cq_lock);
1044 return 0;
1045 }
1046 cq = tgt->cq;
1047 cq_cons = tgt->cq_cons_idx;
1048 cqe = &cq[cq_cons];
1049
1050 while (((wqe = cqe->wqe) & FCOE_CQE_TOGGLE_BIT) ==
1051 (tgt->cq_curr_toggle_bit <<
1052 FCOE_CQE_TOGGLE_BIT_SHIFT)) {
1053
1054 /* new entry on the cq */
1055 if (wqe & FCOE_CQE_CQE_TYPE) {
1056 /* Unsolicited event notification */
1057 bnx2fc_process_unsol_compl(tgt, wqe);
1058 } else {
1059 bnx2fc_pending_work(tgt, wqe);
1060 num_free_sqes++;
1061 }
1062 cqe++;
1063 tgt->cq_cons_idx++;
1064 num_cqes++;
1065
1066 if (tgt->cq_cons_idx == BNX2FC_CQ_WQES_MAX) {
1067 tgt->cq_cons_idx = 0;
1068 cqe = cq;
1069 tgt->cq_curr_toggle_bit =
1070 1 - tgt->cq_curr_toggle_bit;
1071 }
1072 }
1073 if (num_cqes) {
1074 /* Arm CQ only if doorbell is mapped */
1075 if (tgt->ctx_base)
1076 bnx2fc_arm_cq(tgt);
1077 atomic_add(num_free_sqes, &tgt->free_sqes);
1078 }
1079 spin_unlock_bh(&tgt->cq_lock);
1080 return 0;
1081 }
1082
1083 /**
1084 * bnx2fc_fastpath_notification - process global event queue (KCQ)
1085 *
1086 * @hba: adapter structure pointer
1087 * @new_cqe_kcqe: pointer to newly DMA'd KCQ entry
1088 *
1089 * Fast path event notification handler
1090 */
bnx2fc_fastpath_notification(struct bnx2fc_hba * hba,struct fcoe_kcqe * new_cqe_kcqe)1091 static void bnx2fc_fastpath_notification(struct bnx2fc_hba *hba,
1092 struct fcoe_kcqe *new_cqe_kcqe)
1093 {
1094 u32 conn_id = new_cqe_kcqe->fcoe_conn_id;
1095 struct bnx2fc_rport *tgt = hba->tgt_ofld_list[conn_id];
1096
1097 if (!tgt) {
1098 printk(KERN_ERR PFX "conn_id 0x%x not valid\n", conn_id);
1099 return;
1100 }
1101
1102 bnx2fc_process_new_cqes(tgt);
1103 }
1104
1105 /**
1106 * bnx2fc_process_ofld_cmpl - process FCoE session offload completion
1107 *
1108 * @hba: adapter structure pointer
1109 * @ofld_kcqe: connection offload kcqe pointer
1110 *
1111 * handle session offload completion, enable the session if offload is
1112 * successful.
1113 */
bnx2fc_process_ofld_cmpl(struct bnx2fc_hba * hba,struct fcoe_kcqe * ofld_kcqe)1114 static void bnx2fc_process_ofld_cmpl(struct bnx2fc_hba *hba,
1115 struct fcoe_kcqe *ofld_kcqe)
1116 {
1117 struct bnx2fc_rport *tgt;
1118 struct bnx2fc_interface *interface;
1119 u32 conn_id;
1120 u32 context_id;
1121
1122 conn_id = ofld_kcqe->fcoe_conn_id;
1123 context_id = ofld_kcqe->fcoe_conn_context_id;
1124 tgt = hba->tgt_ofld_list[conn_id];
1125 if (!tgt) {
1126 printk(KERN_ALERT PFX "ERROR:ofld_cmpl: No pending ofld req\n");
1127 return;
1128 }
1129 BNX2FC_TGT_DBG(tgt, "Entered ofld compl - context_id = 0x%x\n",
1130 ofld_kcqe->fcoe_conn_context_id);
1131 interface = tgt->port->priv;
1132 if (hba != interface->hba) {
1133 printk(KERN_ERR PFX "ERROR:ofld_cmpl: HBA mis-match\n");
1134 goto ofld_cmpl_err;
1135 }
1136 /*
1137 * cnic has allocated a context_id for this session; use this
1138 * while enabling the session.
1139 */
1140 tgt->context_id = context_id;
1141 if (ofld_kcqe->completion_status) {
1142 if (ofld_kcqe->completion_status ==
1143 FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE) {
1144 printk(KERN_ERR PFX "unable to allocate FCoE context "
1145 "resources\n");
1146 set_bit(BNX2FC_FLAG_CTX_ALLOC_FAILURE, &tgt->flags);
1147 }
1148 } else {
1149 /* FW offload request successfully completed */
1150 set_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags);
1151 }
1152 ofld_cmpl_err:
1153 set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
1154 wake_up_interruptible(&tgt->ofld_wait);
1155 }
1156
1157 /**
1158 * bnx2fc_process_enable_conn_cmpl - process FCoE session enable completion
1159 *
1160 * @hba: adapter structure pointer
1161 * @ofld_kcqe: connection offload kcqe pointer
1162 *
1163 * handle session enable completion, mark the rport as ready
1164 */
1165
bnx2fc_process_enable_conn_cmpl(struct bnx2fc_hba * hba,struct fcoe_kcqe * ofld_kcqe)1166 static void bnx2fc_process_enable_conn_cmpl(struct bnx2fc_hba *hba,
1167 struct fcoe_kcqe *ofld_kcqe)
1168 {
1169 struct bnx2fc_rport *tgt;
1170 struct bnx2fc_interface *interface;
1171 u32 conn_id;
1172 u32 context_id;
1173
1174 context_id = ofld_kcqe->fcoe_conn_context_id;
1175 conn_id = ofld_kcqe->fcoe_conn_id;
1176 tgt = hba->tgt_ofld_list[conn_id];
1177 if (!tgt) {
1178 printk(KERN_ERR PFX "ERROR:enbl_cmpl: No pending ofld req\n");
1179 return;
1180 }
1181
1182 BNX2FC_TGT_DBG(tgt, "Enable compl - context_id = 0x%x\n",
1183 ofld_kcqe->fcoe_conn_context_id);
1184
1185 /*
1186 * context_id should be the same for this target during offload
1187 * and enable
1188 */
1189 if (tgt->context_id != context_id) {
1190 printk(KERN_ERR PFX "context id mis-match\n");
1191 return;
1192 }
1193 interface = tgt->port->priv;
1194 if (hba != interface->hba) {
1195 printk(KERN_ERR PFX "bnx2fc-enbl_cmpl: HBA mis-match\n");
1196 goto enbl_cmpl_err;
1197 }
1198 if (!ofld_kcqe->completion_status)
1199 /* enable successful - rport ready for issuing IOs */
1200 set_bit(BNX2FC_FLAG_ENABLED, &tgt->flags);
1201
1202 enbl_cmpl_err:
1203 set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
1204 wake_up_interruptible(&tgt->ofld_wait);
1205 }
1206
bnx2fc_process_conn_disable_cmpl(struct bnx2fc_hba * hba,struct fcoe_kcqe * disable_kcqe)1207 static void bnx2fc_process_conn_disable_cmpl(struct bnx2fc_hba *hba,
1208 struct fcoe_kcqe *disable_kcqe)
1209 {
1210
1211 struct bnx2fc_rport *tgt;
1212 u32 conn_id;
1213
1214 conn_id = disable_kcqe->fcoe_conn_id;
1215 tgt = hba->tgt_ofld_list[conn_id];
1216 if (!tgt) {
1217 printk(KERN_ERR PFX "ERROR: disable_cmpl: No disable req\n");
1218 return;
1219 }
1220
1221 BNX2FC_TGT_DBG(tgt, PFX "disable_cmpl: conn_id %d\n", conn_id);
1222
1223 if (disable_kcqe->completion_status) {
1224 printk(KERN_ERR PFX "Disable failed with cmpl status %d\n",
1225 disable_kcqe->completion_status);
1226 set_bit(BNX2FC_FLAG_DISABLE_FAILED, &tgt->flags);
1227 set_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
1228 wake_up_interruptible(&tgt->upld_wait);
1229 } else {
1230 /* disable successful */
1231 BNX2FC_TGT_DBG(tgt, "disable successful\n");
1232 clear_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags);
1233 clear_bit(BNX2FC_FLAG_ENABLED, &tgt->flags);
1234 set_bit(BNX2FC_FLAG_DISABLED, &tgt->flags);
1235 set_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
1236 wake_up_interruptible(&tgt->upld_wait);
1237 }
1238 }
1239
bnx2fc_process_conn_destroy_cmpl(struct bnx2fc_hba * hba,struct fcoe_kcqe * destroy_kcqe)1240 static void bnx2fc_process_conn_destroy_cmpl(struct bnx2fc_hba *hba,
1241 struct fcoe_kcqe *destroy_kcqe)
1242 {
1243 struct bnx2fc_rport *tgt;
1244 u32 conn_id;
1245
1246 conn_id = destroy_kcqe->fcoe_conn_id;
1247 tgt = hba->tgt_ofld_list[conn_id];
1248 if (!tgt) {
1249 printk(KERN_ERR PFX "destroy_cmpl: No destroy req\n");
1250 return;
1251 }
1252
1253 BNX2FC_TGT_DBG(tgt, "destroy_cmpl: conn_id %d\n", conn_id);
1254
1255 if (destroy_kcqe->completion_status) {
1256 printk(KERN_ERR PFX "Destroy conn failed, cmpl status %d\n",
1257 destroy_kcqe->completion_status);
1258 return;
1259 } else {
1260 /* destroy successful */
1261 BNX2FC_TGT_DBG(tgt, "upload successful\n");
1262 clear_bit(BNX2FC_FLAG_DISABLED, &tgt->flags);
1263 set_bit(BNX2FC_FLAG_DESTROYED, &tgt->flags);
1264 set_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
1265 wake_up_interruptible(&tgt->upld_wait);
1266 }
1267 }
1268
bnx2fc_init_failure(struct bnx2fc_hba * hba,u32 err_code)1269 static void bnx2fc_init_failure(struct bnx2fc_hba *hba, u32 err_code)
1270 {
1271 switch (err_code) {
1272 case FCOE_KCQE_COMPLETION_STATUS_INVALID_OPCODE:
1273 printk(KERN_ERR PFX "init_failure due to invalid opcode\n");
1274 break;
1275
1276 case FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE:
1277 printk(KERN_ERR PFX "init failed due to ctx alloc failure\n");
1278 break;
1279
1280 case FCOE_KCQE_COMPLETION_STATUS_NIC_ERROR:
1281 printk(KERN_ERR PFX "init_failure due to NIC error\n");
1282 break;
1283 case FCOE_KCQE_COMPLETION_STATUS_ERROR:
1284 printk(KERN_ERR PFX "init failure due to compl status err\n");
1285 break;
1286 case FCOE_KCQE_COMPLETION_STATUS_WRONG_HSI_VERSION:
1287 printk(KERN_ERR PFX "init failure due to HSI mismatch\n");
1288 break;
1289 default:
1290 printk(KERN_ERR PFX "Unknown Error code %d\n", err_code);
1291 }
1292 }
1293
1294 /**
1295 * bnx2fc_indicae_kcqe - process KCQE
1296 *
1297 * @hba: adapter structure pointer
1298 * @kcqe: kcqe pointer
1299 * @num_cqe: Number of completion queue elements
1300 *
1301 * Generic KCQ event handler
1302 */
bnx2fc_indicate_kcqe(void * context,struct kcqe * kcq[],u32 num_cqe)1303 void bnx2fc_indicate_kcqe(void *context, struct kcqe *kcq[],
1304 u32 num_cqe)
1305 {
1306 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
1307 int i = 0;
1308 struct fcoe_kcqe *kcqe = NULL;
1309
1310 while (i < num_cqe) {
1311 kcqe = (struct fcoe_kcqe *) kcq[i++];
1312
1313 switch (kcqe->op_code) {
1314 case FCOE_KCQE_OPCODE_CQ_EVENT_NOTIFICATION:
1315 bnx2fc_fastpath_notification(hba, kcqe);
1316 break;
1317
1318 case FCOE_KCQE_OPCODE_OFFLOAD_CONN:
1319 bnx2fc_process_ofld_cmpl(hba, kcqe);
1320 break;
1321
1322 case FCOE_KCQE_OPCODE_ENABLE_CONN:
1323 bnx2fc_process_enable_conn_cmpl(hba, kcqe);
1324 break;
1325
1326 case FCOE_KCQE_OPCODE_INIT_FUNC:
1327 if (kcqe->completion_status !=
1328 FCOE_KCQE_COMPLETION_STATUS_SUCCESS) {
1329 bnx2fc_init_failure(hba,
1330 kcqe->completion_status);
1331 } else {
1332 set_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1333 bnx2fc_get_link_state(hba);
1334 printk(KERN_INFO PFX "[%.2x]: FCOE_INIT passed\n",
1335 (u8)hba->pcidev->bus->number);
1336 }
1337 break;
1338
1339 case FCOE_KCQE_OPCODE_DESTROY_FUNC:
1340 if (kcqe->completion_status !=
1341 FCOE_KCQE_COMPLETION_STATUS_SUCCESS) {
1342
1343 printk(KERN_ERR PFX "DESTROY failed\n");
1344 } else {
1345 printk(KERN_ERR PFX "DESTROY success\n");
1346 }
1347 set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
1348 wake_up_interruptible(&hba->destroy_wait);
1349 break;
1350
1351 case FCOE_KCQE_OPCODE_DISABLE_CONN:
1352 bnx2fc_process_conn_disable_cmpl(hba, kcqe);
1353 break;
1354
1355 case FCOE_KCQE_OPCODE_DESTROY_CONN:
1356 bnx2fc_process_conn_destroy_cmpl(hba, kcqe);
1357 break;
1358
1359 case FCOE_KCQE_OPCODE_STAT_FUNC:
1360 if (kcqe->completion_status !=
1361 FCOE_KCQE_COMPLETION_STATUS_SUCCESS)
1362 printk(KERN_ERR PFX "STAT failed\n");
1363 complete(&hba->stat_req_done);
1364 break;
1365
1366 case FCOE_KCQE_OPCODE_FCOE_ERROR:
1367 /* fall thru */
1368 default:
1369 printk(KERN_ERR PFX "unknown opcode 0x%x\n",
1370 kcqe->op_code);
1371 }
1372 }
1373 }
1374
bnx2fc_add_2_sq(struct bnx2fc_rport * tgt,u16 xid)1375 void bnx2fc_add_2_sq(struct bnx2fc_rport *tgt, u16 xid)
1376 {
1377 struct fcoe_sqe *sqe;
1378
1379 sqe = &tgt->sq[tgt->sq_prod_idx];
1380
1381 /* Fill SQ WQE */
1382 sqe->wqe = xid << FCOE_SQE_TASK_ID_SHIFT;
1383 sqe->wqe |= tgt->sq_curr_toggle_bit << FCOE_SQE_TOGGLE_BIT_SHIFT;
1384
1385 /* Advance SQ Prod Idx */
1386 if (++tgt->sq_prod_idx == BNX2FC_SQ_WQES_MAX) {
1387 tgt->sq_prod_idx = 0;
1388 tgt->sq_curr_toggle_bit = 1 - tgt->sq_curr_toggle_bit;
1389 }
1390 }
1391
bnx2fc_ring_doorbell(struct bnx2fc_rport * tgt)1392 void bnx2fc_ring_doorbell(struct bnx2fc_rport *tgt)
1393 {
1394 struct b577xx_doorbell_set_prod *sq_db = &tgt->sq_db;
1395 u32 msg;
1396
1397 wmb();
1398 sq_db->prod = tgt->sq_prod_idx |
1399 (tgt->sq_curr_toggle_bit << 15);
1400 msg = *((u32 *)sq_db);
1401 writel(cpu_to_le32(msg), tgt->ctx_base);
1402
1403 }
1404
bnx2fc_map_doorbell(struct bnx2fc_rport * tgt)1405 int bnx2fc_map_doorbell(struct bnx2fc_rport *tgt)
1406 {
1407 u32 context_id = tgt->context_id;
1408 struct fcoe_port *port = tgt->port;
1409 u32 reg_off;
1410 resource_size_t reg_base;
1411 struct bnx2fc_interface *interface = port->priv;
1412 struct bnx2fc_hba *hba = interface->hba;
1413
1414 reg_base = pci_resource_start(hba->pcidev,
1415 BNX2X_DOORBELL_PCI_BAR);
1416 reg_off = (1 << BNX2X_DB_SHIFT) * (context_id & 0x1FFFF);
1417 tgt->ctx_base = ioremap_nocache(reg_base + reg_off, 4);
1418 if (!tgt->ctx_base)
1419 return -ENOMEM;
1420 return 0;
1421 }
1422
bnx2fc_get_next_rqe(struct bnx2fc_rport * tgt,u8 num_items)1423 char *bnx2fc_get_next_rqe(struct bnx2fc_rport *tgt, u8 num_items)
1424 {
1425 char *buf = (char *)tgt->rq + (tgt->rq_cons_idx * BNX2FC_RQ_BUF_SZ);
1426
1427 if (tgt->rq_cons_idx + num_items > BNX2FC_RQ_WQES_MAX)
1428 return NULL;
1429
1430 tgt->rq_cons_idx += num_items;
1431
1432 if (tgt->rq_cons_idx >= BNX2FC_RQ_WQES_MAX)
1433 tgt->rq_cons_idx -= BNX2FC_RQ_WQES_MAX;
1434
1435 return buf;
1436 }
1437
bnx2fc_return_rqe(struct bnx2fc_rport * tgt,u8 num_items)1438 void bnx2fc_return_rqe(struct bnx2fc_rport *tgt, u8 num_items)
1439 {
1440 /* return the rq buffer */
1441 u32 next_prod_idx = tgt->rq_prod_idx + num_items;
1442 if ((next_prod_idx & 0x7fff) == BNX2FC_RQ_WQES_MAX) {
1443 /* Wrap around RQ */
1444 next_prod_idx += 0x8000 - BNX2FC_RQ_WQES_MAX;
1445 }
1446 tgt->rq_prod_idx = next_prod_idx;
1447 tgt->conn_db->rq_prod = tgt->rq_prod_idx;
1448 }
1449
bnx2fc_init_seq_cleanup_task(struct bnx2fc_cmd * seq_clnp_req,struct fcoe_task_ctx_entry * task,struct bnx2fc_cmd * orig_io_req,u32 offset)1450 void bnx2fc_init_seq_cleanup_task(struct bnx2fc_cmd *seq_clnp_req,
1451 struct fcoe_task_ctx_entry *task,
1452 struct bnx2fc_cmd *orig_io_req,
1453 u32 offset)
1454 {
1455 struct scsi_cmnd *sc_cmd = orig_io_req->sc_cmd;
1456 struct bnx2fc_rport *tgt = seq_clnp_req->tgt;
1457 struct fcoe_bd_ctx *bd = orig_io_req->bd_tbl->bd_tbl;
1458 struct fcoe_ext_mul_sges_ctx *sgl;
1459 u8 task_type = FCOE_TASK_TYPE_SEQUENCE_CLEANUP;
1460 u8 orig_task_type;
1461 u16 orig_xid = orig_io_req->xid;
1462 u32 context_id = tgt->context_id;
1463 u64 phys_addr = (u64)orig_io_req->bd_tbl->bd_tbl_dma;
1464 u32 orig_offset = offset;
1465 int bd_count;
1466 int orig_task_idx, index;
1467 int i;
1468
1469 memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
1470
1471 if (sc_cmd->sc_data_direction == DMA_TO_DEVICE)
1472 orig_task_type = FCOE_TASK_TYPE_WRITE;
1473 else
1474 orig_task_type = FCOE_TASK_TYPE_READ;
1475
1476 /* Tx flags */
1477 task->txwr_rxrd.const_ctx.tx_flags =
1478 FCOE_TASK_TX_STATE_SEQUENCE_CLEANUP <<
1479 FCOE_TCE_TX_WR_RX_RD_CONST_TX_STATE_SHIFT;
1480 /* init flags */
1481 task->txwr_rxrd.const_ctx.init_flags = task_type <<
1482 FCOE_TCE_TX_WR_RX_RD_CONST_TASK_TYPE_SHIFT;
1483 task->txwr_rxrd.const_ctx.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
1484 FCOE_TCE_TX_WR_RX_RD_CONST_CLASS_TYPE_SHIFT;
1485 task->rxwr_txrd.const_ctx.init_flags = context_id <<
1486 FCOE_TCE_RX_WR_TX_RD_CONST_CID_SHIFT;
1487 task->rxwr_txrd.const_ctx.init_flags = context_id <<
1488 FCOE_TCE_RX_WR_TX_RD_CONST_CID_SHIFT;
1489
1490 task->txwr_rxrd.union_ctx.cleanup.ctx.cleaned_task_id = orig_xid;
1491
1492 task->txwr_rxrd.union_ctx.cleanup.ctx.rolled_tx_seq_cnt = 0;
1493 task->txwr_rxrd.union_ctx.cleanup.ctx.rolled_tx_data_offset = offset;
1494
1495 bd_count = orig_io_req->bd_tbl->bd_valid;
1496
1497 /* obtain the appropriate bd entry from relative offset */
1498 for (i = 0; i < bd_count; i++) {
1499 if (offset < bd[i].buf_len)
1500 break;
1501 offset -= bd[i].buf_len;
1502 }
1503 phys_addr += (i * sizeof(struct fcoe_bd_ctx));
1504
1505 if (orig_task_type == FCOE_TASK_TYPE_WRITE) {
1506 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.lo =
1507 (u32)phys_addr;
1508 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.hi =
1509 (u32)((u64)phys_addr >> 32);
1510 task->txwr_only.sgl_ctx.sgl.mul_sgl.sgl_size =
1511 bd_count;
1512 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_off =
1513 offset; /* adjusted offset */
1514 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_idx = i;
1515 } else {
1516 orig_task_idx = orig_xid / BNX2FC_TASKS_PER_PAGE;
1517 index = orig_xid % BNX2FC_TASKS_PER_PAGE;
1518
1519 /* Multiple SGEs were used for this IO */
1520 sgl = &task->rxwr_only.union_ctx.read_info.sgl_ctx.sgl;
1521 sgl->mul_sgl.cur_sge_addr.lo = (u32)phys_addr;
1522 sgl->mul_sgl.cur_sge_addr.hi = (u32)((u64)phys_addr >> 32);
1523 sgl->mul_sgl.sgl_size = bd_count;
1524 sgl->mul_sgl.cur_sge_off = offset; /*adjusted offset */
1525 sgl->mul_sgl.cur_sge_idx = i;
1526
1527 memset(&task->rxwr_only.rx_seq_ctx, 0,
1528 sizeof(struct fcoe_rx_seq_ctx));
1529 task->rxwr_only.rx_seq_ctx.low_exp_ro = orig_offset;
1530 task->rxwr_only.rx_seq_ctx.high_exp_ro = orig_offset;
1531 }
1532 }
bnx2fc_init_cleanup_task(struct bnx2fc_cmd * io_req,struct fcoe_task_ctx_entry * task,u16 orig_xid)1533 void bnx2fc_init_cleanup_task(struct bnx2fc_cmd *io_req,
1534 struct fcoe_task_ctx_entry *task,
1535 u16 orig_xid)
1536 {
1537 u8 task_type = FCOE_TASK_TYPE_EXCHANGE_CLEANUP;
1538 struct bnx2fc_rport *tgt = io_req->tgt;
1539 u32 context_id = tgt->context_id;
1540
1541 memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
1542
1543 /* Tx Write Rx Read */
1544 /* init flags */
1545 task->txwr_rxrd.const_ctx.init_flags = task_type <<
1546 FCOE_TCE_TX_WR_RX_RD_CONST_TASK_TYPE_SHIFT;
1547 task->txwr_rxrd.const_ctx.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
1548 FCOE_TCE_TX_WR_RX_RD_CONST_CLASS_TYPE_SHIFT;
1549 if (tgt->dev_type == TYPE_TAPE)
1550 task->txwr_rxrd.const_ctx.init_flags |=
1551 FCOE_TASK_DEV_TYPE_TAPE <<
1552 FCOE_TCE_TX_WR_RX_RD_CONST_DEV_TYPE_SHIFT;
1553 else
1554 task->txwr_rxrd.const_ctx.init_flags |=
1555 FCOE_TASK_DEV_TYPE_DISK <<
1556 FCOE_TCE_TX_WR_RX_RD_CONST_DEV_TYPE_SHIFT;
1557 task->txwr_rxrd.union_ctx.cleanup.ctx.cleaned_task_id = orig_xid;
1558
1559 /* Tx flags */
1560 task->txwr_rxrd.const_ctx.tx_flags =
1561 FCOE_TASK_TX_STATE_EXCHANGE_CLEANUP <<
1562 FCOE_TCE_TX_WR_RX_RD_CONST_TX_STATE_SHIFT;
1563
1564 /* Rx Read Tx Write */
1565 task->rxwr_txrd.const_ctx.init_flags = context_id <<
1566 FCOE_TCE_RX_WR_TX_RD_CONST_CID_SHIFT;
1567 task->rxwr_txrd.var_ctx.rx_flags |= 1 <<
1568 FCOE_TCE_RX_WR_TX_RD_VAR_EXP_FIRST_FRAME_SHIFT;
1569 }
1570
bnx2fc_init_mp_task(struct bnx2fc_cmd * io_req,struct fcoe_task_ctx_entry * task)1571 void bnx2fc_init_mp_task(struct bnx2fc_cmd *io_req,
1572 struct fcoe_task_ctx_entry *task)
1573 {
1574 struct bnx2fc_mp_req *mp_req = &(io_req->mp_req);
1575 struct bnx2fc_rport *tgt = io_req->tgt;
1576 struct fc_frame_header *fc_hdr;
1577 struct fcoe_ext_mul_sges_ctx *sgl;
1578 u8 task_type = 0;
1579 u64 *hdr;
1580 u64 temp_hdr[3];
1581 u32 context_id;
1582
1583
1584 /* Obtain task_type */
1585 if ((io_req->cmd_type == BNX2FC_TASK_MGMT_CMD) ||
1586 (io_req->cmd_type == BNX2FC_ELS)) {
1587 task_type = FCOE_TASK_TYPE_MIDPATH;
1588 } else if (io_req->cmd_type == BNX2FC_ABTS) {
1589 task_type = FCOE_TASK_TYPE_ABTS;
1590 }
1591
1592 memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
1593
1594 /* Setup the task from io_req for easy reference */
1595 io_req->task = task;
1596
1597 BNX2FC_IO_DBG(io_req, "Init MP task for cmd_type = %d task_type = %d\n",
1598 io_req->cmd_type, task_type);
1599
1600 /* Tx only */
1601 if ((task_type == FCOE_TASK_TYPE_MIDPATH) ||
1602 (task_type == FCOE_TASK_TYPE_UNSOLICITED)) {
1603 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.lo =
1604 (u32)mp_req->mp_req_bd_dma;
1605 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.hi =
1606 (u32)((u64)mp_req->mp_req_bd_dma >> 32);
1607 task->txwr_only.sgl_ctx.sgl.mul_sgl.sgl_size = 1;
1608 }
1609
1610 /* Tx Write Rx Read */
1611 /* init flags */
1612 task->txwr_rxrd.const_ctx.init_flags = task_type <<
1613 FCOE_TCE_TX_WR_RX_RD_CONST_TASK_TYPE_SHIFT;
1614 if (tgt->dev_type == TYPE_TAPE)
1615 task->txwr_rxrd.const_ctx.init_flags |=
1616 FCOE_TASK_DEV_TYPE_TAPE <<
1617 FCOE_TCE_TX_WR_RX_RD_CONST_DEV_TYPE_SHIFT;
1618 else
1619 task->txwr_rxrd.const_ctx.init_flags |=
1620 FCOE_TASK_DEV_TYPE_DISK <<
1621 FCOE_TCE_TX_WR_RX_RD_CONST_DEV_TYPE_SHIFT;
1622 task->txwr_rxrd.const_ctx.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
1623 FCOE_TCE_TX_WR_RX_RD_CONST_CLASS_TYPE_SHIFT;
1624
1625 /* tx flags */
1626 task->txwr_rxrd.const_ctx.tx_flags = FCOE_TASK_TX_STATE_INIT <<
1627 FCOE_TCE_TX_WR_RX_RD_CONST_TX_STATE_SHIFT;
1628
1629 /* Rx Write Tx Read */
1630 task->rxwr_txrd.const_ctx.data_2_trns = io_req->data_xfer_len;
1631
1632 /* rx flags */
1633 task->rxwr_txrd.var_ctx.rx_flags |= 1 <<
1634 FCOE_TCE_RX_WR_TX_RD_VAR_EXP_FIRST_FRAME_SHIFT;
1635
1636 context_id = tgt->context_id;
1637 task->rxwr_txrd.const_ctx.init_flags = context_id <<
1638 FCOE_TCE_RX_WR_TX_RD_CONST_CID_SHIFT;
1639
1640 fc_hdr = &(mp_req->req_fc_hdr);
1641 if (task_type == FCOE_TASK_TYPE_MIDPATH) {
1642 fc_hdr->fh_ox_id = cpu_to_be16(io_req->xid);
1643 fc_hdr->fh_rx_id = htons(0xffff);
1644 task->rxwr_txrd.var_ctx.rx_id = 0xffff;
1645 } else if (task_type == FCOE_TASK_TYPE_UNSOLICITED) {
1646 fc_hdr->fh_rx_id = cpu_to_be16(io_req->xid);
1647 }
1648
1649 /* Fill FC Header into middle path buffer */
1650 hdr = (u64 *) &task->txwr_rxrd.union_ctx.tx_frame.fc_hdr;
1651 memcpy(temp_hdr, fc_hdr, sizeof(temp_hdr));
1652 hdr[0] = cpu_to_be64(temp_hdr[0]);
1653 hdr[1] = cpu_to_be64(temp_hdr[1]);
1654 hdr[2] = cpu_to_be64(temp_hdr[2]);
1655
1656 /* Rx Only */
1657 if (task_type == FCOE_TASK_TYPE_MIDPATH) {
1658 sgl = &task->rxwr_only.union_ctx.read_info.sgl_ctx.sgl;
1659
1660 sgl->mul_sgl.cur_sge_addr.lo = (u32)mp_req->mp_resp_bd_dma;
1661 sgl->mul_sgl.cur_sge_addr.hi =
1662 (u32)((u64)mp_req->mp_resp_bd_dma >> 32);
1663 sgl->mul_sgl.sgl_size = 1;
1664 }
1665 }
1666
bnx2fc_init_task(struct bnx2fc_cmd * io_req,struct fcoe_task_ctx_entry * task)1667 void bnx2fc_init_task(struct bnx2fc_cmd *io_req,
1668 struct fcoe_task_ctx_entry *task)
1669 {
1670 u8 task_type;
1671 struct scsi_cmnd *sc_cmd = io_req->sc_cmd;
1672 struct io_bdt *bd_tbl = io_req->bd_tbl;
1673 struct bnx2fc_rport *tgt = io_req->tgt;
1674 struct fcoe_cached_sge_ctx *cached_sge;
1675 struct fcoe_ext_mul_sges_ctx *sgl;
1676 int dev_type = tgt->dev_type;
1677 u64 *fcp_cmnd;
1678 u64 tmp_fcp_cmnd[4];
1679 u32 context_id;
1680 int cnt, i;
1681 int bd_count;
1682
1683 memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
1684
1685 /* Setup the task from io_req for easy reference */
1686 io_req->task = task;
1687
1688 if (sc_cmd->sc_data_direction == DMA_TO_DEVICE)
1689 task_type = FCOE_TASK_TYPE_WRITE;
1690 else
1691 task_type = FCOE_TASK_TYPE_READ;
1692
1693 /* Tx only */
1694 bd_count = bd_tbl->bd_valid;
1695 cached_sge = &task->rxwr_only.union_ctx.read_info.sgl_ctx.cached_sge;
1696 if (task_type == FCOE_TASK_TYPE_WRITE) {
1697 if ((dev_type == TYPE_DISK) && (bd_count == 1)) {
1698 struct fcoe_bd_ctx *fcoe_bd_tbl = bd_tbl->bd_tbl;
1699
1700 task->txwr_only.sgl_ctx.cached_sge.cur_buf_addr.lo =
1701 cached_sge->cur_buf_addr.lo =
1702 fcoe_bd_tbl->buf_addr_lo;
1703 task->txwr_only.sgl_ctx.cached_sge.cur_buf_addr.hi =
1704 cached_sge->cur_buf_addr.hi =
1705 fcoe_bd_tbl->buf_addr_hi;
1706 task->txwr_only.sgl_ctx.cached_sge.cur_buf_rem =
1707 cached_sge->cur_buf_rem =
1708 fcoe_bd_tbl->buf_len;
1709
1710 task->txwr_rxrd.const_ctx.init_flags |= 1 <<
1711 FCOE_TCE_TX_WR_RX_RD_CONST_CACHED_SGE_SHIFT;
1712 } else {
1713 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.lo =
1714 (u32)bd_tbl->bd_tbl_dma;
1715 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.hi =
1716 (u32)((u64)bd_tbl->bd_tbl_dma >> 32);
1717 task->txwr_only.sgl_ctx.sgl.mul_sgl.sgl_size =
1718 bd_tbl->bd_valid;
1719 }
1720 }
1721
1722 /*Tx Write Rx Read */
1723 /* Init state to NORMAL */
1724 task->txwr_rxrd.const_ctx.init_flags |= task_type <<
1725 FCOE_TCE_TX_WR_RX_RD_CONST_TASK_TYPE_SHIFT;
1726 if (dev_type == TYPE_TAPE) {
1727 task->txwr_rxrd.const_ctx.init_flags |=
1728 FCOE_TASK_DEV_TYPE_TAPE <<
1729 FCOE_TCE_TX_WR_RX_RD_CONST_DEV_TYPE_SHIFT;
1730 io_req->rec_retry = 0;
1731 io_req->rec_retry = 0;
1732 } else
1733 task->txwr_rxrd.const_ctx.init_flags |=
1734 FCOE_TASK_DEV_TYPE_DISK <<
1735 FCOE_TCE_TX_WR_RX_RD_CONST_DEV_TYPE_SHIFT;
1736 task->txwr_rxrd.const_ctx.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
1737 FCOE_TCE_TX_WR_RX_RD_CONST_CLASS_TYPE_SHIFT;
1738 /* tx flags */
1739 task->txwr_rxrd.const_ctx.tx_flags = FCOE_TASK_TX_STATE_NORMAL <<
1740 FCOE_TCE_TX_WR_RX_RD_CONST_TX_STATE_SHIFT;
1741
1742 /* Set initial seq counter */
1743 task->txwr_rxrd.union_ctx.tx_seq.ctx.seq_cnt = 1;
1744
1745 /* Fill FCP_CMND IU */
1746 fcp_cmnd = (u64 *)
1747 task->txwr_rxrd.union_ctx.fcp_cmd.opaque;
1748 bnx2fc_build_fcp_cmnd(io_req, (struct fcp_cmnd *)&tmp_fcp_cmnd);
1749
1750 /* swap fcp_cmnd */
1751 cnt = sizeof(struct fcp_cmnd) / sizeof(u64);
1752
1753 for (i = 0; i < cnt; i++) {
1754 *fcp_cmnd = cpu_to_be64(tmp_fcp_cmnd[i]);
1755 fcp_cmnd++;
1756 }
1757
1758 /* Rx Write Tx Read */
1759 task->rxwr_txrd.const_ctx.data_2_trns = io_req->data_xfer_len;
1760
1761 context_id = tgt->context_id;
1762 task->rxwr_txrd.const_ctx.init_flags = context_id <<
1763 FCOE_TCE_RX_WR_TX_RD_CONST_CID_SHIFT;
1764
1765 /* rx flags */
1766 /* Set state to "waiting for the first packet" */
1767 task->rxwr_txrd.var_ctx.rx_flags |= 1 <<
1768 FCOE_TCE_RX_WR_TX_RD_VAR_EXP_FIRST_FRAME_SHIFT;
1769
1770 task->rxwr_txrd.var_ctx.rx_id = 0xffff;
1771
1772 /* Rx Only */
1773 if (task_type != FCOE_TASK_TYPE_READ)
1774 return;
1775
1776 sgl = &task->rxwr_only.union_ctx.read_info.sgl_ctx.sgl;
1777 bd_count = bd_tbl->bd_valid;
1778
1779 if (dev_type == TYPE_DISK) {
1780 if (bd_count == 1) {
1781
1782 struct fcoe_bd_ctx *fcoe_bd_tbl = bd_tbl->bd_tbl;
1783
1784 cached_sge->cur_buf_addr.lo = fcoe_bd_tbl->buf_addr_lo;
1785 cached_sge->cur_buf_addr.hi = fcoe_bd_tbl->buf_addr_hi;
1786 cached_sge->cur_buf_rem = fcoe_bd_tbl->buf_len;
1787 task->txwr_rxrd.const_ctx.init_flags |= 1 <<
1788 FCOE_TCE_TX_WR_RX_RD_CONST_CACHED_SGE_SHIFT;
1789 } else if (bd_count == 2) {
1790 struct fcoe_bd_ctx *fcoe_bd_tbl = bd_tbl->bd_tbl;
1791
1792 cached_sge->cur_buf_addr.lo = fcoe_bd_tbl->buf_addr_lo;
1793 cached_sge->cur_buf_addr.hi = fcoe_bd_tbl->buf_addr_hi;
1794 cached_sge->cur_buf_rem = fcoe_bd_tbl->buf_len;
1795
1796 fcoe_bd_tbl++;
1797 cached_sge->second_buf_addr.lo =
1798 fcoe_bd_tbl->buf_addr_lo;
1799 cached_sge->second_buf_addr.hi =
1800 fcoe_bd_tbl->buf_addr_hi;
1801 cached_sge->second_buf_rem = fcoe_bd_tbl->buf_len;
1802 task->txwr_rxrd.const_ctx.init_flags |= 1 <<
1803 FCOE_TCE_TX_WR_RX_RD_CONST_CACHED_SGE_SHIFT;
1804 } else {
1805
1806 sgl->mul_sgl.cur_sge_addr.lo = (u32)bd_tbl->bd_tbl_dma;
1807 sgl->mul_sgl.cur_sge_addr.hi =
1808 (u32)((u64)bd_tbl->bd_tbl_dma >> 32);
1809 sgl->mul_sgl.sgl_size = bd_count;
1810 }
1811 } else {
1812 sgl->mul_sgl.cur_sge_addr.lo = (u32)bd_tbl->bd_tbl_dma;
1813 sgl->mul_sgl.cur_sge_addr.hi =
1814 (u32)((u64)bd_tbl->bd_tbl_dma >> 32);
1815 sgl->mul_sgl.sgl_size = bd_count;
1816 }
1817 }
1818
1819 /**
1820 * bnx2fc_setup_task_ctx - allocate and map task context
1821 *
1822 * @hba: pointer to adapter structure
1823 *
1824 * allocate memory for task context, and associated BD table to be used
1825 * by firmware
1826 *
1827 */
bnx2fc_setup_task_ctx(struct bnx2fc_hba * hba)1828 int bnx2fc_setup_task_ctx(struct bnx2fc_hba *hba)
1829 {
1830 int rc = 0;
1831 struct regpair *task_ctx_bdt;
1832 dma_addr_t addr;
1833 int task_ctx_arr_sz;
1834 int i;
1835
1836 /*
1837 * Allocate task context bd table. A page size of bd table
1838 * can map 256 buffers. Each buffer contains 32 task context
1839 * entries. Hence the limit with one page is 8192 task context
1840 * entries.
1841 */
1842 hba->task_ctx_bd_tbl = dma_alloc_coherent(&hba->pcidev->dev,
1843 PAGE_SIZE,
1844 &hba->task_ctx_bd_dma,
1845 GFP_KERNEL);
1846 if (!hba->task_ctx_bd_tbl) {
1847 printk(KERN_ERR PFX "unable to allocate task context BDT\n");
1848 rc = -1;
1849 goto out;
1850 }
1851
1852 /*
1853 * Allocate task_ctx which is an array of pointers pointing to
1854 * a page containing 32 task contexts
1855 */
1856 task_ctx_arr_sz = (hba->max_tasks / BNX2FC_TASKS_PER_PAGE);
1857 hba->task_ctx = kzalloc((task_ctx_arr_sz * sizeof(void *)),
1858 GFP_KERNEL);
1859 if (!hba->task_ctx) {
1860 printk(KERN_ERR PFX "unable to allocate task context array\n");
1861 rc = -1;
1862 goto out1;
1863 }
1864
1865 /*
1866 * Allocate task_ctx_dma which is an array of dma addresses
1867 */
1868 hba->task_ctx_dma = kmalloc((task_ctx_arr_sz *
1869 sizeof(dma_addr_t)), GFP_KERNEL);
1870 if (!hba->task_ctx_dma) {
1871 printk(KERN_ERR PFX "unable to alloc context mapping array\n");
1872 rc = -1;
1873 goto out2;
1874 }
1875
1876 task_ctx_bdt = (struct regpair *)hba->task_ctx_bd_tbl;
1877 for (i = 0; i < task_ctx_arr_sz; i++) {
1878
1879 hba->task_ctx[i] = dma_alloc_coherent(&hba->pcidev->dev,
1880 PAGE_SIZE,
1881 &hba->task_ctx_dma[i],
1882 GFP_KERNEL);
1883 if (!hba->task_ctx[i]) {
1884 printk(KERN_ERR PFX "unable to alloc task context\n");
1885 rc = -1;
1886 goto out3;
1887 }
1888 addr = (u64)hba->task_ctx_dma[i];
1889 task_ctx_bdt->hi = cpu_to_le32((u64)addr >> 32);
1890 task_ctx_bdt->lo = cpu_to_le32((u32)addr);
1891 task_ctx_bdt++;
1892 }
1893 return 0;
1894
1895 out3:
1896 for (i = 0; i < task_ctx_arr_sz; i++) {
1897 if (hba->task_ctx[i]) {
1898
1899 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1900 hba->task_ctx[i], hba->task_ctx_dma[i]);
1901 hba->task_ctx[i] = NULL;
1902 }
1903 }
1904
1905 kfree(hba->task_ctx_dma);
1906 hba->task_ctx_dma = NULL;
1907 out2:
1908 kfree(hba->task_ctx);
1909 hba->task_ctx = NULL;
1910 out1:
1911 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1912 hba->task_ctx_bd_tbl, hba->task_ctx_bd_dma);
1913 hba->task_ctx_bd_tbl = NULL;
1914 out:
1915 return rc;
1916 }
1917
bnx2fc_free_task_ctx(struct bnx2fc_hba * hba)1918 void bnx2fc_free_task_ctx(struct bnx2fc_hba *hba)
1919 {
1920 int task_ctx_arr_sz;
1921 int i;
1922
1923 if (hba->task_ctx_bd_tbl) {
1924 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1925 hba->task_ctx_bd_tbl,
1926 hba->task_ctx_bd_dma);
1927 hba->task_ctx_bd_tbl = NULL;
1928 }
1929
1930 task_ctx_arr_sz = (hba->max_tasks / BNX2FC_TASKS_PER_PAGE);
1931 if (hba->task_ctx) {
1932 for (i = 0; i < task_ctx_arr_sz; i++) {
1933 if (hba->task_ctx[i]) {
1934 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1935 hba->task_ctx[i],
1936 hba->task_ctx_dma[i]);
1937 hba->task_ctx[i] = NULL;
1938 }
1939 }
1940 kfree(hba->task_ctx);
1941 hba->task_ctx = NULL;
1942 }
1943
1944 kfree(hba->task_ctx_dma);
1945 hba->task_ctx_dma = NULL;
1946 }
1947
bnx2fc_free_hash_table(struct bnx2fc_hba * hba)1948 static void bnx2fc_free_hash_table(struct bnx2fc_hba *hba)
1949 {
1950 int i;
1951 int segment_count;
1952 u32 *pbl;
1953
1954 if (hba->hash_tbl_segments) {
1955
1956 pbl = hba->hash_tbl_pbl;
1957 if (pbl) {
1958 segment_count = hba->hash_tbl_segment_count;
1959 for (i = 0; i < segment_count; ++i) {
1960 dma_addr_t dma_address;
1961
1962 dma_address = le32_to_cpu(*pbl);
1963 ++pbl;
1964 dma_address += ((u64)le32_to_cpu(*pbl)) << 32;
1965 ++pbl;
1966 dma_free_coherent(&hba->pcidev->dev,
1967 BNX2FC_HASH_TBL_CHUNK_SIZE,
1968 hba->hash_tbl_segments[i],
1969 dma_address);
1970 }
1971 }
1972
1973 kfree(hba->hash_tbl_segments);
1974 hba->hash_tbl_segments = NULL;
1975 }
1976
1977 if (hba->hash_tbl_pbl) {
1978 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1979 hba->hash_tbl_pbl,
1980 hba->hash_tbl_pbl_dma);
1981 hba->hash_tbl_pbl = NULL;
1982 }
1983 }
1984
bnx2fc_allocate_hash_table(struct bnx2fc_hba * hba)1985 static int bnx2fc_allocate_hash_table(struct bnx2fc_hba *hba)
1986 {
1987 int i;
1988 int hash_table_size;
1989 int segment_count;
1990 int segment_array_size;
1991 int dma_segment_array_size;
1992 dma_addr_t *dma_segment_array;
1993 u32 *pbl;
1994
1995 hash_table_size = BNX2FC_NUM_MAX_SESS * BNX2FC_MAX_ROWS_IN_HASH_TBL *
1996 sizeof(struct fcoe_hash_table_entry);
1997
1998 segment_count = hash_table_size + BNX2FC_HASH_TBL_CHUNK_SIZE - 1;
1999 segment_count /= BNX2FC_HASH_TBL_CHUNK_SIZE;
2000 hba->hash_tbl_segment_count = segment_count;
2001
2002 segment_array_size = segment_count * sizeof(*hba->hash_tbl_segments);
2003 hba->hash_tbl_segments = kzalloc(segment_array_size, GFP_KERNEL);
2004 if (!hba->hash_tbl_segments) {
2005 printk(KERN_ERR PFX "hash table pointers alloc failed\n");
2006 return -ENOMEM;
2007 }
2008 dma_segment_array_size = segment_count * sizeof(*dma_segment_array);
2009 dma_segment_array = kzalloc(dma_segment_array_size, GFP_KERNEL);
2010 if (!dma_segment_array) {
2011 printk(KERN_ERR PFX "hash table pointers (dma) alloc failed\n");
2012 goto cleanup_ht;
2013 }
2014
2015 for (i = 0; i < segment_count; ++i) {
2016 hba->hash_tbl_segments[i] = dma_alloc_coherent(&hba->pcidev->dev,
2017 BNX2FC_HASH_TBL_CHUNK_SIZE,
2018 &dma_segment_array[i],
2019 GFP_KERNEL);
2020 if (!hba->hash_tbl_segments[i]) {
2021 printk(KERN_ERR PFX "hash segment alloc failed\n");
2022 goto cleanup_dma;
2023 }
2024 }
2025
2026 hba->hash_tbl_pbl = dma_alloc_coherent(&hba->pcidev->dev, PAGE_SIZE,
2027 &hba->hash_tbl_pbl_dma,
2028 GFP_KERNEL);
2029 if (!hba->hash_tbl_pbl) {
2030 printk(KERN_ERR PFX "hash table pbl alloc failed\n");
2031 goto cleanup_dma;
2032 }
2033
2034 pbl = hba->hash_tbl_pbl;
2035 for (i = 0; i < segment_count; ++i) {
2036 u64 paddr = dma_segment_array[i];
2037 *pbl = cpu_to_le32((u32) paddr);
2038 ++pbl;
2039 *pbl = cpu_to_le32((u32) (paddr >> 32));
2040 ++pbl;
2041 }
2042 pbl = hba->hash_tbl_pbl;
2043 i = 0;
2044 while (*pbl && *(pbl + 1)) {
2045 u32 lo;
2046 u32 hi;
2047 lo = *pbl;
2048 ++pbl;
2049 hi = *pbl;
2050 ++pbl;
2051 ++i;
2052 }
2053 kfree(dma_segment_array);
2054 return 0;
2055
2056 cleanup_dma:
2057 for (i = 0; i < segment_count; ++i) {
2058 if (hba->hash_tbl_segments[i])
2059 dma_free_coherent(&hba->pcidev->dev,
2060 BNX2FC_HASH_TBL_CHUNK_SIZE,
2061 hba->hash_tbl_segments[i],
2062 dma_segment_array[i]);
2063 }
2064
2065 kfree(dma_segment_array);
2066
2067 cleanup_ht:
2068 kfree(hba->hash_tbl_segments);
2069 hba->hash_tbl_segments = NULL;
2070 return -ENOMEM;
2071 }
2072
2073 /**
2074 * bnx2fc_setup_fw_resc - Allocate and map hash table and dummy buffer
2075 *
2076 * @hba: Pointer to adapter structure
2077 *
2078 */
bnx2fc_setup_fw_resc(struct bnx2fc_hba * hba)2079 int bnx2fc_setup_fw_resc(struct bnx2fc_hba *hba)
2080 {
2081 u64 addr;
2082 u32 mem_size;
2083 int i;
2084
2085 if (bnx2fc_allocate_hash_table(hba))
2086 return -ENOMEM;
2087
2088 mem_size = BNX2FC_NUM_MAX_SESS * sizeof(struct regpair);
2089 hba->t2_hash_tbl_ptr = dma_alloc_coherent(&hba->pcidev->dev, mem_size,
2090 &hba->t2_hash_tbl_ptr_dma,
2091 GFP_KERNEL);
2092 if (!hba->t2_hash_tbl_ptr) {
2093 printk(KERN_ERR PFX "unable to allocate t2 hash table ptr\n");
2094 bnx2fc_free_fw_resc(hba);
2095 return -ENOMEM;
2096 }
2097
2098 mem_size = BNX2FC_NUM_MAX_SESS *
2099 sizeof(struct fcoe_t2_hash_table_entry);
2100 hba->t2_hash_tbl = dma_alloc_coherent(&hba->pcidev->dev, mem_size,
2101 &hba->t2_hash_tbl_dma,
2102 GFP_KERNEL);
2103 if (!hba->t2_hash_tbl) {
2104 printk(KERN_ERR PFX "unable to allocate t2 hash table\n");
2105 bnx2fc_free_fw_resc(hba);
2106 return -ENOMEM;
2107 }
2108 for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
2109 addr = (unsigned long) hba->t2_hash_tbl_dma +
2110 ((i+1) * sizeof(struct fcoe_t2_hash_table_entry));
2111 hba->t2_hash_tbl[i].next.lo = addr & 0xffffffff;
2112 hba->t2_hash_tbl[i].next.hi = addr >> 32;
2113 }
2114
2115 hba->dummy_buffer = dma_alloc_coherent(&hba->pcidev->dev,
2116 PAGE_SIZE, &hba->dummy_buf_dma,
2117 GFP_KERNEL);
2118 if (!hba->dummy_buffer) {
2119 printk(KERN_ERR PFX "unable to alloc MP Dummy Buffer\n");
2120 bnx2fc_free_fw_resc(hba);
2121 return -ENOMEM;
2122 }
2123
2124 hba->stats_buffer = dma_alloc_coherent(&hba->pcidev->dev, PAGE_SIZE,
2125 &hba->stats_buf_dma,
2126 GFP_KERNEL);
2127 if (!hba->stats_buffer) {
2128 printk(KERN_ERR PFX "unable to alloc Stats Buffer\n");
2129 bnx2fc_free_fw_resc(hba);
2130 return -ENOMEM;
2131 }
2132
2133 return 0;
2134 }
2135
bnx2fc_free_fw_resc(struct bnx2fc_hba * hba)2136 void bnx2fc_free_fw_resc(struct bnx2fc_hba *hba)
2137 {
2138 u32 mem_size;
2139
2140 if (hba->stats_buffer) {
2141 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
2142 hba->stats_buffer, hba->stats_buf_dma);
2143 hba->stats_buffer = NULL;
2144 }
2145
2146 if (hba->dummy_buffer) {
2147 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
2148 hba->dummy_buffer, hba->dummy_buf_dma);
2149 hba->dummy_buffer = NULL;
2150 }
2151
2152 if (hba->t2_hash_tbl_ptr) {
2153 mem_size = BNX2FC_NUM_MAX_SESS * sizeof(struct regpair);
2154 dma_free_coherent(&hba->pcidev->dev, mem_size,
2155 hba->t2_hash_tbl_ptr,
2156 hba->t2_hash_tbl_ptr_dma);
2157 hba->t2_hash_tbl_ptr = NULL;
2158 }
2159
2160 if (hba->t2_hash_tbl) {
2161 mem_size = BNX2FC_NUM_MAX_SESS *
2162 sizeof(struct fcoe_t2_hash_table_entry);
2163 dma_free_coherent(&hba->pcidev->dev, mem_size,
2164 hba->t2_hash_tbl, hba->t2_hash_tbl_dma);
2165 hba->t2_hash_tbl = NULL;
2166 }
2167 bnx2fc_free_hash_table(hba);
2168 }
2169