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OMAPDSS: VENC: fix NULL pointer dereference in DSS2 VENC sysfs debug attr on OMAP4
[zen-stable.git] / drivers / scsi / bnx2fc / bnx2fc_hwi.c
blob1923a25cb6a22201bc45456cb06f2da9c7715f90
1 /* bnx2fc_hwi.c: Broadcom NetXtreme II 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 - 2011 Broadcom Corporation
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation.
10 *
11 * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
12 */
13
14 #include "bnx2fc.h"
15
16 DECLARE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu);
17
18 static void bnx2fc_fastpath_notification(struct bnx2fc_hba *hba,
19 struct fcoe_kcqe *new_cqe_kcqe);
20 static void bnx2fc_process_ofld_cmpl(struct bnx2fc_hba *hba,
21 struct fcoe_kcqe *ofld_kcqe);
22 static void bnx2fc_process_enable_conn_cmpl(struct bnx2fc_hba *hba,
23 struct fcoe_kcqe *ofld_kcqe);
24 static void bnx2fc_init_failure(struct bnx2fc_hba *hba, u32 err_code);
25 static void bnx2fc_process_conn_destroy_cmpl(struct bnx2fc_hba *hba,
26 struct fcoe_kcqe *destroy_kcqe);
27
28 int bnx2fc_send_stat_req(struct bnx2fc_hba *hba)
29 {
30 struct fcoe_kwqe_stat stat_req;
31 struct kwqe *kwqe_arr[2];
32 int num_kwqes = 1;
33 int rc = 0;
34
35 memset(&stat_req, 0x00, sizeof(struct fcoe_kwqe_stat));
36 stat_req.hdr.op_code = FCOE_KWQE_OPCODE_STAT;
37 stat_req.hdr.flags =
38 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
39
40 stat_req.stat_params_addr_lo = (u32) hba->stats_buf_dma;
41 stat_req.stat_params_addr_hi = (u32) ((u64)hba->stats_buf_dma >> 32);
42
43 kwqe_arr[0] = (struct kwqe *) &stat_req;
44
45 if (hba->cnic && hba->cnic->submit_kwqes)
46 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
47
48 return rc;
49 }
50
51 /**
52 * bnx2fc_send_fw_fcoe_init_msg - initiates initial handshake with FCoE f/w
53 *
54 * @hba: adapter structure pointer
55 *
56 * Send down FCoE firmware init KWQEs which initiates the initial handshake
57 * with the f/w.
58 *
59 */
60 int bnx2fc_send_fw_fcoe_init_msg(struct bnx2fc_hba *hba)
61 {
62 struct fcoe_kwqe_init1 fcoe_init1;
63 struct fcoe_kwqe_init2 fcoe_init2;
64 struct fcoe_kwqe_init3 fcoe_init3;
65 struct kwqe *kwqe_arr[3];
66 int num_kwqes = 3;
67 int rc = 0;
68
69 if (!hba->cnic) {
70 printk(KERN_ERR PFX "hba->cnic NULL during fcoe fw init\n");
71 return -ENODEV;
72 }
73
74 /* fill init1 KWQE */
75 memset(&fcoe_init1, 0x00, sizeof(struct fcoe_kwqe_init1));
76 fcoe_init1.hdr.op_code = FCOE_KWQE_OPCODE_INIT1;
77 fcoe_init1.hdr.flags = (FCOE_KWQE_LAYER_CODE <<
78 FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
79
80 fcoe_init1.num_tasks = BNX2FC_MAX_TASKS;
81 fcoe_init1.sq_num_wqes = BNX2FC_SQ_WQES_MAX;
82 fcoe_init1.rq_num_wqes = BNX2FC_RQ_WQES_MAX;
83 fcoe_init1.rq_buffer_log_size = BNX2FC_RQ_BUF_LOG_SZ;
84 fcoe_init1.cq_num_wqes = BNX2FC_CQ_WQES_MAX;
85 fcoe_init1.dummy_buffer_addr_lo = (u32) hba->dummy_buf_dma;
86 fcoe_init1.dummy_buffer_addr_hi = (u32) ((u64)hba->dummy_buf_dma >> 32);
87 fcoe_init1.task_list_pbl_addr_lo = (u32) hba->task_ctx_bd_dma;
88 fcoe_init1.task_list_pbl_addr_hi =
89 (u32) ((u64) hba->task_ctx_bd_dma >> 32);
90 fcoe_init1.mtu = BNX2FC_MINI_JUMBO_MTU;
91
92 fcoe_init1.flags = (PAGE_SHIFT <<
93 FCOE_KWQE_INIT1_LOG_PAGE_SIZE_SHIFT);
94
95 fcoe_init1.num_sessions_log = BNX2FC_NUM_MAX_SESS_LOG;
96
97 /* fill init2 KWQE */
98 memset(&fcoe_init2, 0x00, sizeof(struct fcoe_kwqe_init2));
99 fcoe_init2.hdr.op_code = FCOE_KWQE_OPCODE_INIT2;
100 fcoe_init2.hdr.flags = (FCOE_KWQE_LAYER_CODE <<
101 FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
102
103 fcoe_init2.hsi_major_version = FCOE_HSI_MAJOR_VERSION;
104 fcoe_init2.hsi_minor_version = FCOE_HSI_MINOR_VERSION;
105
106
107 fcoe_init2.hash_tbl_pbl_addr_lo = (u32) hba->hash_tbl_pbl_dma;
108 fcoe_init2.hash_tbl_pbl_addr_hi = (u32)
109 ((u64) hba->hash_tbl_pbl_dma >> 32);
110
111 fcoe_init2.t2_hash_tbl_addr_lo = (u32) hba->t2_hash_tbl_dma;
112 fcoe_init2.t2_hash_tbl_addr_hi = (u32)
113 ((u64) hba->t2_hash_tbl_dma >> 32);
114
115 fcoe_init2.t2_ptr_hash_tbl_addr_lo = (u32) hba->t2_hash_tbl_ptr_dma;
116 fcoe_init2.t2_ptr_hash_tbl_addr_hi = (u32)
117 ((u64) hba->t2_hash_tbl_ptr_dma >> 32);
118
119 fcoe_init2.free_list_count = BNX2FC_NUM_MAX_SESS;
120
121 /* fill init3 KWQE */
122 memset(&fcoe_init3, 0x00, sizeof(struct fcoe_kwqe_init3));
123 fcoe_init3.hdr.op_code = FCOE_KWQE_OPCODE_INIT3;
124 fcoe_init3.hdr.flags = (FCOE_KWQE_LAYER_CODE <<
125 FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
126 fcoe_init3.error_bit_map_lo = 0xffffffff;
127 fcoe_init3.error_bit_map_hi = 0xffffffff;
128
129 fcoe_init3.perf_config = 1;
130
131 kwqe_arr[0] = (struct kwqe *) &fcoe_init1;
132 kwqe_arr[1] = (struct kwqe *) &fcoe_init2;
133 kwqe_arr[2] = (struct kwqe *) &fcoe_init3;
134
135 if (hba->cnic && hba->cnic->submit_kwqes)
136 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
137
138 return rc;
139 }
140 int bnx2fc_send_fw_fcoe_destroy_msg(struct bnx2fc_hba *hba)
141 {
142 struct fcoe_kwqe_destroy fcoe_destroy;
143 struct kwqe *kwqe_arr[2];
144 int num_kwqes = 1;
145 int rc = -1;
146
147 /* fill destroy KWQE */
148 memset(&fcoe_destroy, 0x00, sizeof(struct fcoe_kwqe_destroy));
149 fcoe_destroy.hdr.op_code = FCOE_KWQE_OPCODE_DESTROY;
150 fcoe_destroy.hdr.flags = (FCOE_KWQE_LAYER_CODE <<
151 FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
152 kwqe_arr[0] = (struct kwqe *) &fcoe_destroy;
153
154 if (hba->cnic && hba->cnic->submit_kwqes)
155 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
156 return rc;
157 }
158
159 /**
160 * bnx2fc_send_session_ofld_req - initiates FCoE Session offload process
161 *
162 * @port: port structure pointer
163 * @tgt: bnx2fc_rport structure pointer
164 */
165 int bnx2fc_send_session_ofld_req(struct fcoe_port *port,
166 struct bnx2fc_rport *tgt)
167 {
168 struct fc_lport *lport = port->lport;
169 struct bnx2fc_interface *interface = port->priv;
170 struct bnx2fc_hba *hba = interface->hba;
171 struct kwqe *kwqe_arr[4];
172 struct fcoe_kwqe_conn_offload1 ofld_req1;
173 struct fcoe_kwqe_conn_offload2 ofld_req2;
174 struct fcoe_kwqe_conn_offload3 ofld_req3;
175 struct fcoe_kwqe_conn_offload4 ofld_req4;
176 struct fc_rport_priv *rdata = tgt->rdata;
177 struct fc_rport *rport = tgt->rport;
178 int num_kwqes = 4;
179 u32 port_id;
180 int rc = 0;
181 u16 conn_id;
182
183 /* Initialize offload request 1 structure */
184 memset(&ofld_req1, 0x00, sizeof(struct fcoe_kwqe_conn_offload1));
185
186 ofld_req1.hdr.op_code = FCOE_KWQE_OPCODE_OFFLOAD_CONN1;
187 ofld_req1.hdr.flags =
188 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
189
190
191 conn_id = (u16)tgt->fcoe_conn_id;
192 ofld_req1.fcoe_conn_id = conn_id;
193
194
195 ofld_req1.sq_addr_lo = (u32) tgt->sq_dma;
196 ofld_req1.sq_addr_hi = (u32)((u64) tgt->sq_dma >> 32);
197
198 ofld_req1.rq_pbl_addr_lo = (u32) tgt->rq_pbl_dma;
199 ofld_req1.rq_pbl_addr_hi = (u32)((u64) tgt->rq_pbl_dma >> 32);
200
201 ofld_req1.rq_first_pbe_addr_lo = (u32) tgt->rq_dma;
202 ofld_req1.rq_first_pbe_addr_hi =
203 (u32)((u64) tgt->rq_dma >> 32);
204
205 ofld_req1.rq_prod = 0x8000;
206
207 /* Initialize offload request 2 structure */
208 memset(&ofld_req2, 0x00, sizeof(struct fcoe_kwqe_conn_offload2));
209
210 ofld_req2.hdr.op_code = FCOE_KWQE_OPCODE_OFFLOAD_CONN2;
211 ofld_req2.hdr.flags =
212 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
213
214 ofld_req2.tx_max_fc_pay_len = rdata->maxframe_size;
215
216 ofld_req2.cq_addr_lo = (u32) tgt->cq_dma;
217 ofld_req2.cq_addr_hi = (u32)((u64)tgt->cq_dma >> 32);
218
219 ofld_req2.xferq_addr_lo = (u32) tgt->xferq_dma;
220 ofld_req2.xferq_addr_hi = (u32)((u64)tgt->xferq_dma >> 32);
221
222 ofld_req2.conn_db_addr_lo = (u32)tgt->conn_db_dma;
223 ofld_req2.conn_db_addr_hi = (u32)((u64)tgt->conn_db_dma >> 32);
224
225 /* Initialize offload request 3 structure */
226 memset(&ofld_req3, 0x00, sizeof(struct fcoe_kwqe_conn_offload3));
227
228 ofld_req3.hdr.op_code = FCOE_KWQE_OPCODE_OFFLOAD_CONN3;
229 ofld_req3.hdr.flags =
230 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
231
232 ofld_req3.vlan_tag = interface->vlan_id <<
233 FCOE_KWQE_CONN_OFFLOAD3_VLAN_ID_SHIFT;
234 ofld_req3.vlan_tag |= 3 << FCOE_KWQE_CONN_OFFLOAD3_PRIORITY_SHIFT;
235
236 port_id = fc_host_port_id(lport->host);
237 if (port_id == 0) {
238 BNX2FC_HBA_DBG(lport, "ofld_req: port_id = 0, link down?\n");
239 return -EINVAL;
240 }
241
242 /*
243 * Store s_id of the initiator for further reference. This will
244 * be used during disable/destroy during linkdown processing as
245 * when the lport is reset, the port_id also is reset to 0
246 */
247 tgt->sid = port_id;
248 ofld_req3.s_id[0] = (port_id & 0x000000FF);
249 ofld_req3.s_id[1] = (port_id & 0x0000FF00) >> 8;
250 ofld_req3.s_id[2] = (port_id & 0x00FF0000) >> 16;
251
252 port_id = rport->port_id;
253 ofld_req3.d_id[0] = (port_id & 0x000000FF);
254 ofld_req3.d_id[1] = (port_id & 0x0000FF00) >> 8;
255 ofld_req3.d_id[2] = (port_id & 0x00FF0000) >> 16;
256
257 ofld_req3.tx_total_conc_seqs = rdata->max_seq;
258
259 ofld_req3.tx_max_conc_seqs_c3 = rdata->max_seq;
260 ofld_req3.rx_max_fc_pay_len = lport->mfs;
261
262 ofld_req3.rx_total_conc_seqs = BNX2FC_MAX_SEQS;
263 ofld_req3.rx_max_conc_seqs_c3 = BNX2FC_MAX_SEQS;
264 ofld_req3.rx_open_seqs_exch_c3 = 1;
265
266 ofld_req3.confq_first_pbe_addr_lo = tgt->confq_dma;
267 ofld_req3.confq_first_pbe_addr_hi = (u32)((u64) tgt->confq_dma >> 32);
268
269 /* set mul_n_port_ids supported flag to 0, until it is supported */
270 ofld_req3.flags = 0;
271 /*
272 ofld_req3.flags |= (((lport->send_sp_features & FC_SP_FT_MNA) ? 1:0) <<
273 FCOE_KWQE_CONN_OFFLOAD3_B_MUL_N_PORT_IDS_SHIFT);
274 */
275 /* Info from PLOGI response */
276 ofld_req3.flags |= (((rdata->sp_features & FC_SP_FT_EDTR) ? 1 : 0) <<
277 FCOE_KWQE_CONN_OFFLOAD3_B_E_D_TOV_RES_SHIFT);
278
279 ofld_req3.flags |= (((rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
280 FCOE_KWQE_CONN_OFFLOAD3_B_CONT_INCR_SEQ_CNT_SHIFT);
281
282 /*
283 * Info from PRLI response, this info is used for sequence level error
284 * recovery support
285 */
286 if (tgt->dev_type == TYPE_TAPE) {
287 ofld_req3.flags |= 1 <<
288 FCOE_KWQE_CONN_OFFLOAD3_B_CONF_REQ_SHIFT;
289 ofld_req3.flags |= (((rdata->flags & FC_RP_FLAGS_REC_SUPPORTED)
290 ? 1 : 0) <<
291 FCOE_KWQE_CONN_OFFLOAD3_B_REC_VALID_SHIFT);
292 }
293
294 /* vlan flag */
295 ofld_req3.flags |= (interface->vlan_enabled <<
296 FCOE_KWQE_CONN_OFFLOAD3_B_VLAN_FLAG_SHIFT);
297
298 /* C2_VALID and ACK flags are not set as they are not suppported */
299
300
301 /* Initialize offload request 4 structure */
302 memset(&ofld_req4, 0x00, sizeof(struct fcoe_kwqe_conn_offload4));
303 ofld_req4.hdr.op_code = FCOE_KWQE_OPCODE_OFFLOAD_CONN4;
304 ofld_req4.hdr.flags =
305 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
306
307 ofld_req4.e_d_tov_timer_val = lport->e_d_tov / 20;
308
309
310 ofld_req4.src_mac_addr_lo[0] = port->data_src_addr[5];
311 /* local mac */
312 ofld_req4.src_mac_addr_lo[1] = port->data_src_addr[4];
313 ofld_req4.src_mac_addr_mid[0] = port->data_src_addr[3];
314 ofld_req4.src_mac_addr_mid[1] = port->data_src_addr[2];
315 ofld_req4.src_mac_addr_hi[0] = port->data_src_addr[1];
316 ofld_req4.src_mac_addr_hi[1] = port->data_src_addr[0];
317 ofld_req4.dst_mac_addr_lo[0] = interface->ctlr.dest_addr[5];
318 /* fcf mac */
319 ofld_req4.dst_mac_addr_lo[1] = interface->ctlr.dest_addr[4];
320 ofld_req4.dst_mac_addr_mid[0] = interface->ctlr.dest_addr[3];
321 ofld_req4.dst_mac_addr_mid[1] = interface->ctlr.dest_addr[2];
322 ofld_req4.dst_mac_addr_hi[0] = interface->ctlr.dest_addr[1];
323 ofld_req4.dst_mac_addr_hi[1] = interface->ctlr.dest_addr[0];
324
325 ofld_req4.lcq_addr_lo = (u32) tgt->lcq_dma;
326 ofld_req4.lcq_addr_hi = (u32)((u64) tgt->lcq_dma >> 32);
327
328 ofld_req4.confq_pbl_base_addr_lo = (u32) tgt->confq_pbl_dma;
329 ofld_req4.confq_pbl_base_addr_hi =
330 (u32)((u64) tgt->confq_pbl_dma >> 32);
331
332 kwqe_arr[0] = (struct kwqe *) &ofld_req1;
333 kwqe_arr[1] = (struct kwqe *) &ofld_req2;
334 kwqe_arr[2] = (struct kwqe *) &ofld_req3;
335 kwqe_arr[3] = (struct kwqe *) &ofld_req4;
336
337 if (hba->cnic && hba->cnic->submit_kwqes)
338 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
339
340 return rc;
341 }
342
343 /**
344 * bnx2fc_send_session_enable_req - initiates FCoE Session enablement
345 *
346 * @port: port structure pointer
347 * @tgt: bnx2fc_rport structure pointer
348 */
349 static int bnx2fc_send_session_enable_req(struct fcoe_port *port,
350 struct bnx2fc_rport *tgt)
351 {
352 struct kwqe *kwqe_arr[2];
353 struct bnx2fc_interface *interface = port->priv;
354 struct bnx2fc_hba *hba = interface->hba;
355 struct fcoe_kwqe_conn_enable_disable enbl_req;
356 struct fc_lport *lport = port->lport;
357 struct fc_rport *rport = tgt->rport;
358 int num_kwqes = 1;
359 int rc = 0;
360 u32 port_id;
361
362 memset(&enbl_req, 0x00,
363 sizeof(struct fcoe_kwqe_conn_enable_disable));
364 enbl_req.hdr.op_code = FCOE_KWQE_OPCODE_ENABLE_CONN;
365 enbl_req.hdr.flags =
366 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
367
368 enbl_req.src_mac_addr_lo[0] = port->data_src_addr[5];
369 /* local mac */
370 enbl_req.src_mac_addr_lo[1] = port->data_src_addr[4];
371 enbl_req.src_mac_addr_mid[0] = port->data_src_addr[3];
372 enbl_req.src_mac_addr_mid[1] = port->data_src_addr[2];
373 enbl_req.src_mac_addr_hi[0] = port->data_src_addr[1];
374 enbl_req.src_mac_addr_hi[1] = port->data_src_addr[0];
375 memcpy(tgt->src_addr, port->data_src_addr, ETH_ALEN);
376
377 enbl_req.dst_mac_addr_lo[0] = interface->ctlr.dest_addr[5];
378 enbl_req.dst_mac_addr_lo[1] = interface->ctlr.dest_addr[4];
379 enbl_req.dst_mac_addr_mid[0] = interface->ctlr.dest_addr[3];
380 enbl_req.dst_mac_addr_mid[1] = interface->ctlr.dest_addr[2];
381 enbl_req.dst_mac_addr_hi[0] = interface->ctlr.dest_addr[1];
382 enbl_req.dst_mac_addr_hi[1] = interface->ctlr.dest_addr[0];
383
384 port_id = fc_host_port_id(lport->host);
385 if (port_id != tgt->sid) {
386 printk(KERN_ERR PFX "WARN: enable_req port_id = 0x%x,"
387 "sid = 0x%x\n", port_id, tgt->sid);
388 port_id = tgt->sid;
389 }
390 enbl_req.s_id[0] = (port_id & 0x000000FF);
391 enbl_req.s_id[1] = (port_id & 0x0000FF00) >> 8;
392 enbl_req.s_id[2] = (port_id & 0x00FF0000) >> 16;
393
394 port_id = rport->port_id;
395 enbl_req.d_id[0] = (port_id & 0x000000FF);
396 enbl_req.d_id[1] = (port_id & 0x0000FF00) >> 8;
397 enbl_req.d_id[2] = (port_id & 0x00FF0000) >> 16;
398 enbl_req.vlan_tag = interface->vlan_id <<
399 FCOE_KWQE_CONN_ENABLE_DISABLE_VLAN_ID_SHIFT;
400 enbl_req.vlan_tag |= 3 << FCOE_KWQE_CONN_ENABLE_DISABLE_PRIORITY_SHIFT;
401 enbl_req.vlan_flag = interface->vlan_enabled;
402 enbl_req.context_id = tgt->context_id;
403 enbl_req.conn_id = tgt->fcoe_conn_id;
404
405 kwqe_arr[0] = (struct kwqe *) &enbl_req;
406
407 if (hba->cnic && hba->cnic->submit_kwqes)
408 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
409 return rc;
410 }
411
412 /**
413 * bnx2fc_send_session_disable_req - initiates FCoE Session disable
414 *
415 * @port: port structure pointer
416 * @tgt: bnx2fc_rport structure pointer
417 */
418 int bnx2fc_send_session_disable_req(struct fcoe_port *port,
419 struct bnx2fc_rport *tgt)
420 {
421 struct bnx2fc_interface *interface = port->priv;
422 struct bnx2fc_hba *hba = interface->hba;
423 struct fcoe_kwqe_conn_enable_disable disable_req;
424 struct kwqe *kwqe_arr[2];
425 struct fc_rport *rport = tgt->rport;
426 int num_kwqes = 1;
427 int rc = 0;
428 u32 port_id;
429
430 memset(&disable_req, 0x00,
431 sizeof(struct fcoe_kwqe_conn_enable_disable));
432 disable_req.hdr.op_code = FCOE_KWQE_OPCODE_DISABLE_CONN;
433 disable_req.hdr.flags =
434 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
435
436 disable_req.src_mac_addr_lo[0] = tgt->src_addr[5];
437 disable_req.src_mac_addr_lo[1] = tgt->src_addr[4];
438 disable_req.src_mac_addr_mid[0] = tgt->src_addr[3];
439 disable_req.src_mac_addr_mid[1] = tgt->src_addr[2];
440 disable_req.src_mac_addr_hi[0] = tgt->src_addr[1];
441 disable_req.src_mac_addr_hi[1] = tgt->src_addr[0];
442
443 disable_req.dst_mac_addr_lo[0] = interface->ctlr.dest_addr[5];
444 disable_req.dst_mac_addr_lo[1] = interface->ctlr.dest_addr[4];
445 disable_req.dst_mac_addr_mid[0] = interface->ctlr.dest_addr[3];
446 disable_req.dst_mac_addr_mid[1] = interface->ctlr.dest_addr[2];
447 disable_req.dst_mac_addr_hi[0] = interface->ctlr.dest_addr[1];
448 disable_req.dst_mac_addr_hi[1] = interface->ctlr.dest_addr[0];
449
450 port_id = tgt->sid;
451 disable_req.s_id[0] = (port_id & 0x000000FF);
452 disable_req.s_id[1] = (port_id & 0x0000FF00) >> 8;
453 disable_req.s_id[2] = (port_id & 0x00FF0000) >> 16;
454
455
456 port_id = rport->port_id;
457 disable_req.d_id[0] = (port_id & 0x000000FF);
458 disable_req.d_id[1] = (port_id & 0x0000FF00) >> 8;
459 disable_req.d_id[2] = (port_id & 0x00FF0000) >> 16;
460 disable_req.context_id = tgt->context_id;
461 disable_req.conn_id = tgt->fcoe_conn_id;
462 disable_req.vlan_tag = interface->vlan_id <<
463 FCOE_KWQE_CONN_ENABLE_DISABLE_VLAN_ID_SHIFT;
464 disable_req.vlan_tag |=
465 3 << FCOE_KWQE_CONN_ENABLE_DISABLE_PRIORITY_SHIFT;
466 disable_req.vlan_flag = interface->vlan_enabled;
467
468 kwqe_arr[0] = (struct kwqe *) &disable_req;
469
470 if (hba->cnic && hba->cnic->submit_kwqes)
471 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
472
473 return rc;
474 }
475
476 /**
477 * bnx2fc_send_session_destroy_req - initiates FCoE Session destroy
478 *
479 * @port: port structure pointer
480 * @tgt: bnx2fc_rport structure pointer
481 */
482 int bnx2fc_send_session_destroy_req(struct bnx2fc_hba *hba,
483 struct bnx2fc_rport *tgt)
484 {
485 struct fcoe_kwqe_conn_destroy destroy_req;
486 struct kwqe *kwqe_arr[2];
487 int num_kwqes = 1;
488 int rc = 0;
489
490 memset(&destroy_req, 0x00, sizeof(struct fcoe_kwqe_conn_destroy));
491 destroy_req.hdr.op_code = FCOE_KWQE_OPCODE_DESTROY_CONN;
492 destroy_req.hdr.flags =
493 (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
494
495 destroy_req.context_id = tgt->context_id;
496 destroy_req.conn_id = tgt->fcoe_conn_id;
497
498 kwqe_arr[0] = (struct kwqe *) &destroy_req;
499
500 if (hba->cnic && hba->cnic->submit_kwqes)
501 rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
502
503 return rc;
504 }
505
506 static bool is_valid_lport(struct bnx2fc_hba *hba, struct fc_lport *lport)
507 {
508 struct bnx2fc_lport *blport;
509
510 spin_lock_bh(&hba->hba_lock);
511 list_for_each_entry(blport, &hba->vports, list) {
512 if (blport->lport == lport) {
513 spin_unlock_bh(&hba->hba_lock);
514 return true;
515 }
516 }
517 spin_unlock_bh(&hba->hba_lock);
518 return false;
519
520 }
521
522
523 static void bnx2fc_unsol_els_work(struct work_struct *work)
524 {
525 struct bnx2fc_unsol_els *unsol_els;
526 struct fc_lport *lport;
527 struct bnx2fc_hba *hba;
528 struct fc_frame *fp;
529
530 unsol_els = container_of(work, struct bnx2fc_unsol_els, unsol_els_work);
531 lport = unsol_els->lport;
532 fp = unsol_els->fp;
533 hba = unsol_els->hba;
534 if (is_valid_lport(hba, lport))
535 fc_exch_recv(lport, fp);
536 kfree(unsol_els);
537 }
538
539 void bnx2fc_process_l2_frame_compl(struct bnx2fc_rport *tgt,
540 unsigned char *buf,
541 u32 frame_len, u16 l2_oxid)
542 {
543 struct fcoe_port *port = tgt->port;
544 struct fc_lport *lport = port->lport;
545 struct bnx2fc_interface *interface = port->priv;
546 struct bnx2fc_unsol_els *unsol_els;
547 struct fc_frame_header *fh;
548 struct fc_frame *fp;
549 struct sk_buff *skb;
550 u32 payload_len;
551 u32 crc;
552 u8 op;
553
554
555 unsol_els = kzalloc(sizeof(*unsol_els), GFP_ATOMIC);
556 if (!unsol_els) {
557 BNX2FC_TGT_DBG(tgt, "Unable to allocate unsol_work\n");
558 return;
559 }
560
561 BNX2FC_TGT_DBG(tgt, "l2_frame_compl l2_oxid = 0x%x, frame_len = %d\n",
562 l2_oxid, frame_len);
563
564 payload_len = frame_len - sizeof(struct fc_frame_header);
565
566 fp = fc_frame_alloc(lport, payload_len);
567 if (!fp) {
568 printk(KERN_ERR PFX "fc_frame_alloc failure\n");
569 kfree(unsol_els);
570 return;
571 }
572
573 fh = (struct fc_frame_header *) fc_frame_header_get(fp);
574 /* Copy FC Frame header and payload into the frame */
575 memcpy(fh, buf, frame_len);
576
577 if (l2_oxid != FC_XID_UNKNOWN)
578 fh->fh_ox_id = htons(l2_oxid);
579
580 skb = fp_skb(fp);
581
582 if ((fh->fh_r_ctl == FC_RCTL_ELS_REQ) ||
583 (fh->fh_r_ctl == FC_RCTL_ELS_REP)) {
584
585 if (fh->fh_type == FC_TYPE_ELS) {
586 op = fc_frame_payload_op(fp);
587 if ((op == ELS_TEST) || (op == ELS_ESTC) ||
588 (op == ELS_FAN) || (op == ELS_CSU)) {
589 /*
590 * No need to reply for these
591 * ELS requests
592 */
593 printk(KERN_ERR PFX "dropping ELS 0x%x\n", op);
594 kfree_skb(skb);
595 kfree(unsol_els);
596 return;
597 }
598 }
599 crc = fcoe_fc_crc(fp);
600 fc_frame_init(fp);
601 fr_dev(fp) = lport;
602 fr_sof(fp) = FC_SOF_I3;
603 fr_eof(fp) = FC_EOF_T;
604 fr_crc(fp) = cpu_to_le32(~crc);
605 unsol_els->lport = lport;
606 unsol_els->hba = interface->hba;
607 unsol_els->fp = fp;
608 INIT_WORK(&unsol_els->unsol_els_work, bnx2fc_unsol_els_work);
609 queue_work(bnx2fc_wq, &unsol_els->unsol_els_work);
610 } else {
611 BNX2FC_HBA_DBG(lport, "fh_r_ctl = 0x%x\n", fh->fh_r_ctl);
612 kfree_skb(skb);
613 kfree(unsol_els);
614 }
615 }
616
617 static void bnx2fc_process_unsol_compl(struct bnx2fc_rport *tgt, u16 wqe)
618 {
619 u8 num_rq;
620 struct fcoe_err_report_entry *err_entry;
621 unsigned char *rq_data;
622 unsigned char *buf = NULL, *buf1;
623 int i;
624 u16 xid;
625 u32 frame_len, len;
626 struct bnx2fc_cmd *io_req = NULL;
627 struct fcoe_task_ctx_entry *task, *task_page;
628 struct bnx2fc_interface *interface = tgt->port->priv;
629 struct bnx2fc_hba *hba = interface->hba;
630 int task_idx, index;
631 int rc = 0;
632 u64 err_warn_bit_map;
633 u8 err_warn = 0xff;
634
635
636 BNX2FC_TGT_DBG(tgt, "Entered UNSOL COMPLETION wqe = 0x%x\n", wqe);
637 switch (wqe & FCOE_UNSOLICITED_CQE_SUBTYPE) {
638 case FCOE_UNSOLICITED_FRAME_CQE_TYPE:
639 frame_len = (wqe & FCOE_UNSOLICITED_CQE_PKT_LEN) >>
640 FCOE_UNSOLICITED_CQE_PKT_LEN_SHIFT;
641
642 num_rq = (frame_len + BNX2FC_RQ_BUF_SZ - 1) / BNX2FC_RQ_BUF_SZ;
643
644 spin_lock_bh(&tgt->tgt_lock);
645 rq_data = (unsigned char *)bnx2fc_get_next_rqe(tgt, num_rq);
646 spin_unlock_bh(&tgt->tgt_lock);
647
648 if (rq_data) {
649 buf = rq_data;
650 } else {
651 buf1 = buf = kmalloc((num_rq * BNX2FC_RQ_BUF_SZ),
652 GFP_ATOMIC);
653
654 if (!buf1) {
655 BNX2FC_TGT_DBG(tgt, "Memory alloc failure\n");
656 break;
657 }
658
659 for (i = 0; i < num_rq; i++) {
660 spin_lock_bh(&tgt->tgt_lock);
661 rq_data = (unsigned char *)
662 bnx2fc_get_next_rqe(tgt, 1);
663 spin_unlock_bh(&tgt->tgt_lock);
664 len = BNX2FC_RQ_BUF_SZ;
665 memcpy(buf1, rq_data, len);
666 buf1 += len;
667 }
668 }
669 bnx2fc_process_l2_frame_compl(tgt, buf, frame_len,
670 FC_XID_UNKNOWN);
671
672 if (buf != rq_data)
673 kfree(buf);
674 spin_lock_bh(&tgt->tgt_lock);
675 bnx2fc_return_rqe(tgt, num_rq);
676 spin_unlock_bh(&tgt->tgt_lock);
677 break;
678
679 case FCOE_ERROR_DETECTION_CQE_TYPE:
680 /*
681 * In case of error reporting CQE a single RQ entry
682 * is consumed.
683 */
684 spin_lock_bh(&tgt->tgt_lock);
685 num_rq = 1;
686 err_entry = (struct fcoe_err_report_entry *)
687 bnx2fc_get_next_rqe(tgt, 1);
688 xid = err_entry->fc_hdr.ox_id;
689 BNX2FC_TGT_DBG(tgt, "Unsol Error Frame OX_ID = 0x%x\n", xid);
690 BNX2FC_TGT_DBG(tgt, "err_warn_bitmap = %08x:%08x\n",
691 err_entry->data.err_warn_bitmap_hi,
692 err_entry->data.err_warn_bitmap_lo);
693 BNX2FC_TGT_DBG(tgt, "buf_offsets - tx = 0x%x, rx = 0x%x\n",
694 err_entry->data.tx_buf_off, err_entry->data.rx_buf_off);
695
696
697 if (xid > BNX2FC_MAX_XID) {
698 BNX2FC_TGT_DBG(tgt, "xid(0x%x) out of FW range\n",
699 xid);
700 goto ret_err_rqe;
701 }
702
703 task_idx = xid / BNX2FC_TASKS_PER_PAGE;
704 index = xid % BNX2FC_TASKS_PER_PAGE;
705 task_page = (struct fcoe_task_ctx_entry *)
706 hba->task_ctx[task_idx];
707 task = &(task_page[index]);
708
709 io_req = (struct bnx2fc_cmd *)hba->cmd_mgr->cmds[xid];
710 if (!io_req)
711 goto ret_err_rqe;
712
713 if (io_req->cmd_type != BNX2FC_SCSI_CMD) {
714 printk(KERN_ERR PFX "err_warn: Not a SCSI cmd\n");
715 goto ret_err_rqe;
716 }
717
718 if (test_and_clear_bit(BNX2FC_FLAG_IO_CLEANUP,
719 &io_req->req_flags)) {
720 BNX2FC_IO_DBG(io_req, "unsol_err: cleanup in "
721 "progress.. ignore unsol err\n");
722 goto ret_err_rqe;
723 }
724
725 err_warn_bit_map = (u64)
726 ((u64)err_entry->data.err_warn_bitmap_hi << 32) |
727 (u64)err_entry->data.err_warn_bitmap_lo;
728 for (i = 0; i < BNX2FC_NUM_ERR_BITS; i++) {
729 if (err_warn_bit_map & (u64)((u64)1 << i)) {
730 err_warn = i;
731 break;
732 }
733 }
734
735 /*
736 * If ABTS is already in progress, and FW error is
737 * received after that, do not cancel the timeout_work
738 * and let the error recovery continue by explicitly
739 * logging out the target, when the ABTS eventually
740 * times out.
741 */
742 if (test_bit(BNX2FC_FLAG_ISSUE_ABTS, &io_req->req_flags)) {
743 printk(KERN_ERR PFX "err_warn: io_req (0x%x) already "
744 "in ABTS processing\n", xid);
745 goto ret_err_rqe;
746 }
747 BNX2FC_TGT_DBG(tgt, "err = 0x%x\n", err_warn);
748 if (tgt->dev_type != TYPE_TAPE)
749 goto skip_rec;
750 switch (err_warn) {
751 case FCOE_ERROR_CODE_REC_TOV_TIMER_EXPIRATION:
752 case FCOE_ERROR_CODE_DATA_OOO_RO:
753 case FCOE_ERROR_CODE_COMMON_INCORRECT_SEQ_CNT:
754 case FCOE_ERROR_CODE_DATA_SOFI3_SEQ_ACTIVE_SET:
755 case FCOE_ERROR_CODE_FCP_RSP_OPENED_SEQ:
756 case FCOE_ERROR_CODE_DATA_SOFN_SEQ_ACTIVE_RESET:
757 BNX2FC_TGT_DBG(tgt, "REC TOV popped for xid - 0x%x\n",
758 xid);
759 memset(&io_req->err_entry, 0,
760 sizeof(struct fcoe_err_report_entry));
761 memcpy(&io_req->err_entry, err_entry,
762 sizeof(struct fcoe_err_report_entry));
763 if (!test_bit(BNX2FC_FLAG_SRR_SENT,
764 &io_req->req_flags)) {
765 spin_unlock_bh(&tgt->tgt_lock);
766 rc = bnx2fc_send_rec(io_req);
767 spin_lock_bh(&tgt->tgt_lock);
768
769 if (rc)
770 goto skip_rec;
771 } else
772 printk(KERN_ERR PFX "SRR in progress\n");
773 goto ret_err_rqe;
774 break;
775 default:
776 break;
777 }
778
779 skip_rec:
780 set_bit(BNX2FC_FLAG_ISSUE_ABTS, &io_req->req_flags);
781 /*
782 * Cancel the timeout_work, as we received IO
783 * completion with FW error.
784 */
785 if (cancel_delayed_work(&io_req->timeout_work))
786 kref_put(&io_req->refcount, bnx2fc_cmd_release);
787
788 rc = bnx2fc_initiate_abts(io_req);
789 if (rc != SUCCESS) {
790 printk(KERN_ERR PFX "err_warn: initiate_abts "
791 "failed xid = 0x%x. issue cleanup\n",
792 io_req->xid);
793 bnx2fc_initiate_cleanup(io_req);
794 }
795 ret_err_rqe:
796 bnx2fc_return_rqe(tgt, 1);
797 spin_unlock_bh(&tgt->tgt_lock);
798 break;
799
800 case FCOE_WARNING_DETECTION_CQE_TYPE:
801 /*
802 *In case of warning reporting CQE a single RQ entry
803 * is consumes.
804 */
805 spin_lock_bh(&tgt->tgt_lock);
806 num_rq = 1;
807 err_entry = (struct fcoe_err_report_entry *)
808 bnx2fc_get_next_rqe(tgt, 1);
809 xid = cpu_to_be16(err_entry->fc_hdr.ox_id);
810 BNX2FC_TGT_DBG(tgt, "Unsol Warning Frame OX_ID = 0x%x\n", xid);
811 BNX2FC_TGT_DBG(tgt, "err_warn_bitmap = %08x:%08x",
812 err_entry->data.err_warn_bitmap_hi,
813 err_entry->data.err_warn_bitmap_lo);
814 BNX2FC_TGT_DBG(tgt, "buf_offsets - tx = 0x%x, rx = 0x%x",
815 err_entry->data.tx_buf_off, err_entry->data.rx_buf_off);
816
817 if (xid > BNX2FC_MAX_XID) {
818 BNX2FC_TGT_DBG(tgt, "xid(0x%x) out of FW range\n", xid);
819 goto ret_warn_rqe;
820 }
821
822 err_warn_bit_map = (u64)
823 ((u64)err_entry->data.err_warn_bitmap_hi << 32) |
824 (u64)err_entry->data.err_warn_bitmap_lo;
825 for (i = 0; i < BNX2FC_NUM_ERR_BITS; i++) {
826 if (err_warn_bit_map & (u64) (1 << i)) {
827 err_warn = i;
828 break;
829 }
830 }
831 BNX2FC_TGT_DBG(tgt, "warn = 0x%x\n", err_warn);
832
833 task_idx = xid / BNX2FC_TASKS_PER_PAGE;
834 index = xid % BNX2FC_TASKS_PER_PAGE;
835 task_page = (struct fcoe_task_ctx_entry *)
836 interface->hba->task_ctx[task_idx];
837 task = &(task_page[index]);
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 memset(&io_req->err_entry, 0,
848 sizeof(struct fcoe_err_report_entry));
849 memcpy(&io_req->err_entry, err_entry,
850 sizeof(struct fcoe_err_report_entry));
851
852 if (err_warn == FCOE_ERROR_CODE_REC_TOV_TIMER_EXPIRATION)
853 /* REC_TOV is not a warning code */
854 BUG_ON(1);
855 else
856 BNX2FC_TGT_DBG(tgt, "Unsolicited warning\n");
857 ret_warn_rqe:
858 bnx2fc_return_rqe(tgt, 1);
859 spin_unlock_bh(&tgt->tgt_lock);
860 break;
861
862 default:
863 printk(KERN_ERR PFX "Unsol Compl: Invalid CQE Subtype\n");
864 break;
865 }
866 }
867
868 void bnx2fc_process_cq_compl(struct bnx2fc_rport *tgt, u16 wqe)
869 {
870 struct fcoe_task_ctx_entry *task;
871 struct fcoe_task_ctx_entry *task_page;
872 struct fcoe_port *port = tgt->port;
873 struct bnx2fc_interface *interface = port->priv;
874 struct bnx2fc_hba *hba = interface->hba;
875 struct bnx2fc_cmd *io_req;
876 int task_idx, index;
877 u16 xid;
878 u8 cmd_type;
879 u8 rx_state = 0;
880 u8 num_rq;
881
882 spin_lock_bh(&tgt->tgt_lock);
883 xid = wqe & FCOE_PEND_WQ_CQE_TASK_ID;
884 if (xid >= BNX2FC_MAX_TASKS) {
885 printk(KERN_ERR PFX "ERROR:xid out of range\n");
886 spin_unlock_bh(&tgt->tgt_lock);
887 return;
888 }
889 task_idx = xid / BNX2FC_TASKS_PER_PAGE;
890 index = xid % BNX2FC_TASKS_PER_PAGE;
891 task_page = (struct fcoe_task_ctx_entry *)hba->task_ctx[task_idx];
892 task = &(task_page[index]);
893
894 num_rq = ((task->rxwr_txrd.var_ctx.rx_flags &
895 FCOE_TCE_RX_WR_TX_RD_VAR_NUM_RQ_WQE) >>
896 FCOE_TCE_RX_WR_TX_RD_VAR_NUM_RQ_WQE_SHIFT);
897
898 io_req = (struct bnx2fc_cmd *)hba->cmd_mgr->cmds[xid];
899
900 if (io_req == NULL) {
901 printk(KERN_ERR PFX "ERROR? cq_compl - io_req is NULL\n");
902 spin_unlock_bh(&tgt->tgt_lock);
903 return;
904 }
905
906 /* Timestamp IO completion time */
907 cmd_type = io_req->cmd_type;
908
909 rx_state = ((task->rxwr_txrd.var_ctx.rx_flags &
910 FCOE_TCE_RX_WR_TX_RD_VAR_RX_STATE) >>
911 FCOE_TCE_RX_WR_TX_RD_VAR_RX_STATE_SHIFT);
912
913 /* Process other IO completion types */
914 switch (cmd_type) {
915 case BNX2FC_SCSI_CMD:
916 if (rx_state == FCOE_TASK_RX_STATE_COMPLETED) {
917 bnx2fc_process_scsi_cmd_compl(io_req, task, num_rq);
918 spin_unlock_bh(&tgt->tgt_lock);
919 return;
920 }
921
922 if (rx_state == FCOE_TASK_RX_STATE_ABTS_COMPLETED)
923 bnx2fc_process_abts_compl(io_req, task, num_rq);
924 else if (rx_state ==
925 FCOE_TASK_RX_STATE_EXCHANGE_CLEANUP_COMPLETED)
926 bnx2fc_process_cleanup_compl(io_req, task, num_rq);
927 else
928 printk(KERN_ERR PFX "Invalid rx state - %d\n",
929 rx_state);
930 break;
931
932 case BNX2FC_TASK_MGMT_CMD:
933 BNX2FC_IO_DBG(io_req, "Processing TM complete\n");
934 bnx2fc_process_tm_compl(io_req, task, num_rq);
935 break;
936
937 case BNX2FC_ABTS:
938 /*
939 * ABTS request received by firmware. ABTS response
940 * will be delivered to the task belonging to the IO
941 * that was aborted
942 */
943 BNX2FC_IO_DBG(io_req, "cq_compl- ABTS sent out by fw\n");
944 kref_put(&io_req->refcount, bnx2fc_cmd_release);
945 break;
946
947 case BNX2FC_ELS:
948 if (rx_state == FCOE_TASK_RX_STATE_COMPLETED)
949 bnx2fc_process_els_compl(io_req, task, num_rq);
950 else if (rx_state == FCOE_TASK_RX_STATE_ABTS_COMPLETED)
951 bnx2fc_process_abts_compl(io_req, task, num_rq);
952 else if (rx_state ==
953 FCOE_TASK_RX_STATE_EXCHANGE_CLEANUP_COMPLETED)
954 bnx2fc_process_cleanup_compl(io_req, task, num_rq);
955 else
956 printk(KERN_ERR PFX "Invalid rx state = %d\n",
957 rx_state);
958 break;
959
960 case BNX2FC_CLEANUP:
961 BNX2FC_IO_DBG(io_req, "cq_compl- cleanup resp rcvd\n");
962 kref_put(&io_req->refcount, bnx2fc_cmd_release);
963 break;
964
965 case BNX2FC_SEQ_CLEANUP:
966 BNX2FC_IO_DBG(io_req, "cq_compl(0x%x) - seq cleanup resp\n",
967 io_req->xid);
968 bnx2fc_process_seq_cleanup_compl(io_req, task, rx_state);
969 kref_put(&io_req->refcount, bnx2fc_cmd_release);
970 break;
971
972 default:
973 printk(KERN_ERR PFX "Invalid cmd_type %d\n", cmd_type);
974 break;
975 }
976 spin_unlock_bh(&tgt->tgt_lock);
977 }
978
979 void bnx2fc_arm_cq(struct bnx2fc_rport *tgt)
980 {
981 struct b577xx_fcoe_rx_doorbell *rx_db = &tgt->rx_db;
982 u32 msg;
983
984 wmb();
985 rx_db->doorbell_cq_cons = tgt->cq_cons_idx | (tgt->cq_curr_toggle_bit <<
986 FCOE_CQE_TOGGLE_BIT_SHIFT);
987 msg = *((u32 *)rx_db);
988 writel(cpu_to_le32(msg), tgt->ctx_base);
989 mmiowb();
990
991 }
992
993 struct bnx2fc_work *bnx2fc_alloc_work(struct bnx2fc_rport *tgt, u16 wqe)
994 {
995 struct bnx2fc_work *work;
996 work = kzalloc(sizeof(struct bnx2fc_work), GFP_ATOMIC);
997 if (!work)
998 return NULL;
999
1000 INIT_LIST_HEAD(&work->list);
1001 work->tgt = tgt;
1002 work->wqe = wqe;
1003 return work;
1004 }
1005
1006 int bnx2fc_process_new_cqes(struct bnx2fc_rport *tgt)
1007 {
1008 struct fcoe_cqe *cq;
1009 u32 cq_cons;
1010 struct fcoe_cqe *cqe;
1011 u32 num_free_sqes = 0;
1012 u32 num_cqes = 0;
1013 u16 wqe;
1014
1015 /*
1016 * cq_lock is a low contention lock used to protect
1017 * the CQ data structure from being freed up during
1018 * the upload operation
1019 */
1020 spin_lock_bh(&tgt->cq_lock);
1021
1022 if (!tgt->cq) {
1023 printk(KERN_ERR PFX "process_new_cqes: cq is NULL\n");
1024 spin_unlock_bh(&tgt->cq_lock);
1025 return 0;
1026 }
1027 cq = tgt->cq;
1028 cq_cons = tgt->cq_cons_idx;
1029 cqe = &cq[cq_cons];
1030
1031 while (((wqe = cqe->wqe) & FCOE_CQE_TOGGLE_BIT) ==
1032 (tgt->cq_curr_toggle_bit <<
1033 FCOE_CQE_TOGGLE_BIT_SHIFT)) {
1034
1035 /* new entry on the cq */
1036 if (wqe & FCOE_CQE_CQE_TYPE) {
1037 /* Unsolicited event notification */
1038 bnx2fc_process_unsol_compl(tgt, wqe);
1039 } else {
1040 /* Pending work request completion */
1041 struct bnx2fc_work *work = NULL;
1042 struct bnx2fc_percpu_s *fps = NULL;
1043 unsigned int cpu = wqe % num_possible_cpus();
1044
1045 fps = &per_cpu(bnx2fc_percpu, cpu);
1046 spin_lock_bh(&fps->fp_work_lock);
1047 if (unlikely(!fps->iothread))
1048 goto unlock;
1049
1050 work = bnx2fc_alloc_work(tgt, wqe);
1051 if (work)
1052 list_add_tail(&work->list,
1053 &fps->work_list);
1054 unlock:
1055 spin_unlock_bh(&fps->fp_work_lock);
1056
1057 /* Pending work request completion */
1058 if (fps->iothread && work)
1059 wake_up_process(fps->iothread);
1060 else
1061 bnx2fc_process_cq_compl(tgt, wqe);
1062 num_free_sqes++;
1063 }
1064 cqe++;
1065 tgt->cq_cons_idx++;
1066 num_cqes++;
1067
1068 if (tgt->cq_cons_idx == BNX2FC_CQ_WQES_MAX) {
1069 tgt->cq_cons_idx = 0;
1070 cqe = cq;
1071 tgt->cq_curr_toggle_bit =
1072 1 - tgt->cq_curr_toggle_bit;
1073 }
1074 }
1075 if (num_cqes) {
1076 /* Arm CQ only if doorbell is mapped */
1077 if (tgt->ctx_base)
1078 bnx2fc_arm_cq(tgt);
1079 atomic_add(num_free_sqes, &tgt->free_sqes);
1080 }
1081 spin_unlock_bh(&tgt->cq_lock);
1082 return 0;
1083 }
1084
1085 /**
1086 * bnx2fc_fastpath_notification - process global event queue (KCQ)
1087 *
1088 * @hba: adapter structure pointer
1089 * @new_cqe_kcqe: pointer to newly DMA'd KCQ entry
1090 *
1091 * Fast path event notification handler
1092 */
1093 static void bnx2fc_fastpath_notification(struct bnx2fc_hba *hba,
1094 struct fcoe_kcqe *new_cqe_kcqe)
1095 {
1096 u32 conn_id = new_cqe_kcqe->fcoe_conn_id;
1097 struct bnx2fc_rport *tgt = hba->tgt_ofld_list[conn_id];
1098
1099 if (!tgt) {
1100 printk(KERN_ERR PFX "conn_id 0x%x not valid\n", conn_id);
1101 return;
1102 }
1103
1104 bnx2fc_process_new_cqes(tgt);
1105 }
1106
1107 /**
1108 * bnx2fc_process_ofld_cmpl - process FCoE session offload completion
1109 *
1110 * @hba: adapter structure pointer
1111 * @ofld_kcqe: connection offload kcqe pointer
1112 *
1113 * handle session offload completion, enable the session if offload is
1114 * successful.
1115 */
1116 static void bnx2fc_process_ofld_cmpl(struct bnx2fc_hba *hba,
1117 struct fcoe_kcqe *ofld_kcqe)
1118 {
1119 struct bnx2fc_rport *tgt;
1120 struct fcoe_port *port;
1121 struct bnx2fc_interface *interface;
1122 u32 conn_id;
1123 u32 context_id;
1124 int rc;
1125
1126 conn_id = ofld_kcqe->fcoe_conn_id;
1127 context_id = ofld_kcqe->fcoe_conn_context_id;
1128 tgt = hba->tgt_ofld_list[conn_id];
1129 if (!tgt) {
1130 printk(KERN_ALERT PFX "ERROR:ofld_cmpl: No pending ofld req\n");
1131 return;
1132 }
1133 BNX2FC_TGT_DBG(tgt, "Entered ofld compl - context_id = 0x%x\n",
1134 ofld_kcqe->fcoe_conn_context_id);
1135 port = tgt->port;
1136 interface = tgt->port->priv;
1137 if (hba != interface->hba) {
1138 printk(KERN_ERR PFX "ERROR:ofld_cmpl: HBA mis-match\n");
1139 goto ofld_cmpl_err;
1140 }
1141 /*
1142 * cnic has allocated a context_id for this session; use this
1143 * while enabling the session.
1144 */
1145 tgt->context_id = context_id;
1146 if (ofld_kcqe->completion_status) {
1147 if (ofld_kcqe->completion_status ==
1148 FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE) {
1149 printk(KERN_ERR PFX "unable to allocate FCoE context "
1150 "resources\n");
1151 set_bit(BNX2FC_FLAG_CTX_ALLOC_FAILURE, &tgt->flags);
1152 }
1153 goto ofld_cmpl_err;
1154 } else {
1155
1156 /* now enable the session */
1157 rc = bnx2fc_send_session_enable_req(port, tgt);
1158 if (rc) {
1159 printk(KERN_ERR PFX "enable session failed\n");
1160 goto ofld_cmpl_err;
1161 }
1162 }
1163 return;
1164 ofld_cmpl_err:
1165 set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
1166 wake_up_interruptible(&tgt->ofld_wait);
1167 }
1168
1169 /**
1170 * bnx2fc_process_enable_conn_cmpl - process FCoE session enable completion
1171 *
1172 * @hba: adapter structure pointer
1173 * @ofld_kcqe: connection offload kcqe pointer
1174 *
1175 * handle session enable completion, mark the rport as ready
1176 */
1177
1178 static void bnx2fc_process_enable_conn_cmpl(struct bnx2fc_hba *hba,
1179 struct fcoe_kcqe *ofld_kcqe)
1180 {
1181 struct bnx2fc_rport *tgt;
1182 struct bnx2fc_interface *interface;
1183 u32 conn_id;
1184 u32 context_id;
1185
1186 context_id = ofld_kcqe->fcoe_conn_context_id;
1187 conn_id = ofld_kcqe->fcoe_conn_id;
1188 tgt = hba->tgt_ofld_list[conn_id];
1189 if (!tgt) {
1190 printk(KERN_ERR PFX "ERROR:enbl_cmpl: No pending ofld req\n");
1191 return;
1192 }
1193
1194 BNX2FC_TGT_DBG(tgt, "Enable compl - context_id = 0x%x\n",
1195 ofld_kcqe->fcoe_conn_context_id);
1196
1197 /*
1198 * context_id should be the same for this target during offload
1199 * and enable
1200 */
1201 if (tgt->context_id != context_id) {
1202 printk(KERN_ERR PFX "context id mis-match\n");
1203 return;
1204 }
1205 interface = tgt->port->priv;
1206 if (hba != interface->hba) {
1207 printk(KERN_ERR PFX "bnx2fc-enbl_cmpl: HBA mis-match\n");
1208 goto enbl_cmpl_err;
1209 }
1210 if (ofld_kcqe->completion_status)
1211 goto enbl_cmpl_err;
1212 else {
1213 /* enable successful - rport ready for issuing IOs */
1214 set_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags);
1215 set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
1216 wake_up_interruptible(&tgt->ofld_wait);
1217 }
1218 return;
1219
1220 enbl_cmpl_err:
1221 set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
1222 wake_up_interruptible(&tgt->ofld_wait);
1223 }
1224
1225 static void bnx2fc_process_conn_disable_cmpl(struct bnx2fc_hba *hba,
1226 struct fcoe_kcqe *disable_kcqe)
1227 {
1228
1229 struct bnx2fc_rport *tgt;
1230 u32 conn_id;
1231
1232 conn_id = disable_kcqe->fcoe_conn_id;
1233 tgt = hba->tgt_ofld_list[conn_id];
1234 if (!tgt) {
1235 printk(KERN_ERR PFX "ERROR: disable_cmpl: No disable req\n");
1236 return;
1237 }
1238
1239 BNX2FC_TGT_DBG(tgt, PFX "disable_cmpl: conn_id %d\n", conn_id);
1240
1241 if (disable_kcqe->completion_status) {
1242 printk(KERN_ERR PFX "Disable failed with cmpl status %d\n",
1243 disable_kcqe->completion_status);
1244 return;
1245 } else {
1246 /* disable successful */
1247 BNX2FC_TGT_DBG(tgt, "disable successful\n");
1248 clear_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags);
1249 set_bit(BNX2FC_FLAG_DISABLED, &tgt->flags);
1250 set_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
1251 wake_up_interruptible(&tgt->upld_wait);
1252 }
1253 }
1254
1255 static void bnx2fc_process_conn_destroy_cmpl(struct bnx2fc_hba *hba,
1256 struct fcoe_kcqe *destroy_kcqe)
1257 {
1258 struct bnx2fc_rport *tgt;
1259 u32 conn_id;
1260
1261 conn_id = destroy_kcqe->fcoe_conn_id;
1262 tgt = hba->tgt_ofld_list[conn_id];
1263 if (!tgt) {
1264 printk(KERN_ERR PFX "destroy_cmpl: No destroy req\n");
1265 return;
1266 }
1267
1268 BNX2FC_TGT_DBG(tgt, "destroy_cmpl: conn_id %d\n", conn_id);
1269
1270 if (destroy_kcqe->completion_status) {
1271 printk(KERN_ERR PFX "Destroy conn failed, cmpl status %d\n",
1272 destroy_kcqe->completion_status);
1273 return;
1274 } else {
1275 /* destroy successful */
1276 BNX2FC_TGT_DBG(tgt, "upload successful\n");
1277 clear_bit(BNX2FC_FLAG_DISABLED, &tgt->flags);
1278 set_bit(BNX2FC_FLAG_DESTROYED, &tgt->flags);
1279 set_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
1280 wake_up_interruptible(&tgt->upld_wait);
1281 }
1282 }
1283
1284 static void bnx2fc_init_failure(struct bnx2fc_hba *hba, u32 err_code)
1285 {
1286 switch (err_code) {
1287 case FCOE_KCQE_COMPLETION_STATUS_INVALID_OPCODE:
1288 printk(KERN_ERR PFX "init_failure due to invalid opcode\n");
1289 break;
1290
1291 case FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE:
1292 printk(KERN_ERR PFX "init failed due to ctx alloc failure\n");
1293 break;
1294
1295 case FCOE_KCQE_COMPLETION_STATUS_NIC_ERROR:
1296 printk(KERN_ERR PFX "init_failure due to NIC error\n");
1297 break;
1298 case FCOE_KCQE_COMPLETION_STATUS_ERROR:
1299 printk(KERN_ERR PFX "init failure due to compl status err\n");
1300 break;
1301 case FCOE_KCQE_COMPLETION_STATUS_WRONG_HSI_VERSION:
1302 printk(KERN_ERR PFX "init failure due to HSI mismatch\n");
1303 break;
1304 default:
1305 printk(KERN_ERR PFX "Unknown Error code %d\n", err_code);
1306 }
1307 }
1308
1309 /**
1310 * bnx2fc_indicae_kcqe - process KCQE
1311 *
1312 * @hba: adapter structure pointer
1313 * @kcqe: kcqe pointer
1314 * @num_cqe: Number of completion queue elements
1315 *
1316 * Generic KCQ event handler
1317 */
1318 void bnx2fc_indicate_kcqe(void *context, struct kcqe *kcq[],
1319 u32 num_cqe)
1320 {
1321 struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
1322 int i = 0;
1323 struct fcoe_kcqe *kcqe = NULL;
1324
1325 while (i < num_cqe) {
1326 kcqe = (struct fcoe_kcqe *) kcq[i++];
1327
1328 switch (kcqe->op_code) {
1329 case FCOE_KCQE_OPCODE_CQ_EVENT_NOTIFICATION:
1330 bnx2fc_fastpath_notification(hba, kcqe);
1331 break;
1332
1333 case FCOE_KCQE_OPCODE_OFFLOAD_CONN:
1334 bnx2fc_process_ofld_cmpl(hba, kcqe);
1335 break;
1336
1337 case FCOE_KCQE_OPCODE_ENABLE_CONN:
1338 bnx2fc_process_enable_conn_cmpl(hba, kcqe);
1339 break;
1340
1341 case FCOE_KCQE_OPCODE_INIT_FUNC:
1342 if (kcqe->completion_status !=
1343 FCOE_KCQE_COMPLETION_STATUS_SUCCESS) {
1344 bnx2fc_init_failure(hba,
1345 kcqe->completion_status);
1346 } else {
1347 set_bit(ADAPTER_STATE_UP, &hba->adapter_state);
1348 bnx2fc_get_link_state(hba);
1349 printk(KERN_INFO PFX "[%.2x]: FCOE_INIT passed\n",
1350 (u8)hba->pcidev->bus->number);
1351 }
1352 break;
1353
1354 case FCOE_KCQE_OPCODE_DESTROY_FUNC:
1355 if (kcqe->completion_status !=
1356 FCOE_KCQE_COMPLETION_STATUS_SUCCESS) {
1357
1358 printk(KERN_ERR PFX "DESTROY failed\n");
1359 } else {
1360 printk(KERN_ERR PFX "DESTROY success\n");
1361 }
1362 set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
1363 wake_up_interruptible(&hba->destroy_wait);
1364 break;
1365
1366 case FCOE_KCQE_OPCODE_DISABLE_CONN:
1367 bnx2fc_process_conn_disable_cmpl(hba, kcqe);
1368 break;
1369
1370 case FCOE_KCQE_OPCODE_DESTROY_CONN:
1371 bnx2fc_process_conn_destroy_cmpl(hba, kcqe);
1372 break;
1373
1374 case FCOE_KCQE_OPCODE_STAT_FUNC:
1375 if (kcqe->completion_status !=
1376 FCOE_KCQE_COMPLETION_STATUS_SUCCESS)
1377 printk(KERN_ERR PFX "STAT failed\n");
1378 complete(&hba->stat_req_done);
1379 break;
1380
1381 case FCOE_KCQE_OPCODE_FCOE_ERROR:
1382 /* fall thru */
1383 default:
1384 printk(KERN_ERR PFX "unknown opcode 0x%x\n",
1385 kcqe->op_code);
1386 }
1387 }
1388 }
1389
1390 void bnx2fc_add_2_sq(struct bnx2fc_rport *tgt, u16 xid)
1391 {
1392 struct fcoe_sqe *sqe;
1393
1394 sqe = &tgt->sq[tgt->sq_prod_idx];
1395
1396 /* Fill SQ WQE */
1397 sqe->wqe = xid << FCOE_SQE_TASK_ID_SHIFT;
1398 sqe->wqe |= tgt->sq_curr_toggle_bit << FCOE_SQE_TOGGLE_BIT_SHIFT;
1399
1400 /* Advance SQ Prod Idx */
1401 if (++tgt->sq_prod_idx == BNX2FC_SQ_WQES_MAX) {
1402 tgt->sq_prod_idx = 0;
1403 tgt->sq_curr_toggle_bit = 1 - tgt->sq_curr_toggle_bit;
1404 }
1405 }
1406
1407 void bnx2fc_ring_doorbell(struct bnx2fc_rport *tgt)
1408 {
1409 struct b577xx_doorbell_set_prod *sq_db = &tgt->sq_db;
1410 u32 msg;
1411
1412 wmb();
1413 sq_db->prod = tgt->sq_prod_idx |
1414 (tgt->sq_curr_toggle_bit << 15);
1415 msg = *((u32 *)sq_db);
1416 writel(cpu_to_le32(msg), tgt->ctx_base);
1417 mmiowb();
1418
1419 }
1420
1421 int bnx2fc_map_doorbell(struct bnx2fc_rport *tgt)
1422 {
1423 u32 context_id = tgt->context_id;
1424 struct fcoe_port *port = tgt->port;
1425 u32 reg_off;
1426 resource_size_t reg_base;
1427 struct bnx2fc_interface *interface = port->priv;
1428 struct bnx2fc_hba *hba = interface->hba;
1429
1430 reg_base = pci_resource_start(hba->pcidev,
1431 BNX2X_DOORBELL_PCI_BAR);
1432 reg_off = BNX2FC_5771X_DB_PAGE_SIZE *
1433 (context_id & 0x1FFFF) + DPM_TRIGER_TYPE;
1434 tgt->ctx_base = ioremap_nocache(reg_base + reg_off, 4);
1435 if (!tgt->ctx_base)
1436 return -ENOMEM;
1437 return 0;
1438 }
1439
1440 char *bnx2fc_get_next_rqe(struct bnx2fc_rport *tgt, u8 num_items)
1441 {
1442 char *buf = (char *)tgt->rq + (tgt->rq_cons_idx * BNX2FC_RQ_BUF_SZ);
1443
1444 if (tgt->rq_cons_idx + num_items > BNX2FC_RQ_WQES_MAX)
1445 return NULL;
1446
1447 tgt->rq_cons_idx += num_items;
1448
1449 if (tgt->rq_cons_idx >= BNX2FC_RQ_WQES_MAX)
1450 tgt->rq_cons_idx -= BNX2FC_RQ_WQES_MAX;
1451
1452 return buf;
1453 }
1454
1455 void bnx2fc_return_rqe(struct bnx2fc_rport *tgt, u8 num_items)
1456 {
1457 /* return the rq buffer */
1458 u32 next_prod_idx = tgt->rq_prod_idx + num_items;
1459 if ((next_prod_idx & 0x7fff) == BNX2FC_RQ_WQES_MAX) {
1460 /* Wrap around RQ */
1461 next_prod_idx += 0x8000 - BNX2FC_RQ_WQES_MAX;
1462 }
1463 tgt->rq_prod_idx = next_prod_idx;
1464 tgt->conn_db->rq_prod = tgt->rq_prod_idx;
1465 }
1466
1467 void bnx2fc_init_seq_cleanup_task(struct bnx2fc_cmd *seq_clnp_req,
1468 struct fcoe_task_ctx_entry *task,
1469 struct bnx2fc_cmd *orig_io_req,
1470 u32 offset)
1471 {
1472 struct scsi_cmnd *sc_cmd = orig_io_req->sc_cmd;
1473 struct bnx2fc_rport *tgt = seq_clnp_req->tgt;
1474 struct bnx2fc_interface *interface = tgt->port->priv;
1475 struct fcoe_bd_ctx *bd = orig_io_req->bd_tbl->bd_tbl;
1476 struct fcoe_task_ctx_entry *orig_task;
1477 struct fcoe_task_ctx_entry *task_page;
1478 struct fcoe_ext_mul_sges_ctx *sgl;
1479 u8 task_type = FCOE_TASK_TYPE_SEQUENCE_CLEANUP;
1480 u8 orig_task_type;
1481 u16 orig_xid = orig_io_req->xid;
1482 u32 context_id = tgt->context_id;
1483 u64 phys_addr = (u64)orig_io_req->bd_tbl->bd_tbl_dma;
1484 u32 orig_offset = offset;
1485 int bd_count;
1486 int orig_task_idx, index;
1487 int i;
1488
1489 memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
1490
1491 if (sc_cmd->sc_data_direction == DMA_TO_DEVICE)
1492 orig_task_type = FCOE_TASK_TYPE_WRITE;
1493 else
1494 orig_task_type = FCOE_TASK_TYPE_READ;
1495
1496 /* Tx flags */
1497 task->txwr_rxrd.const_ctx.tx_flags =
1498 FCOE_TASK_TX_STATE_SEQUENCE_CLEANUP <<
1499 FCOE_TCE_TX_WR_RX_RD_CONST_TX_STATE_SHIFT;
1500 /* init flags */
1501 task->txwr_rxrd.const_ctx.init_flags = task_type <<
1502 FCOE_TCE_TX_WR_RX_RD_CONST_TASK_TYPE_SHIFT;
1503 task->txwr_rxrd.const_ctx.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
1504 FCOE_TCE_TX_WR_RX_RD_CONST_CLASS_TYPE_SHIFT;
1505 task->rxwr_txrd.const_ctx.init_flags = context_id <<
1506 FCOE_TCE_RX_WR_TX_RD_CONST_CID_SHIFT;
1507 task->rxwr_txrd.const_ctx.init_flags = context_id <<
1508 FCOE_TCE_RX_WR_TX_RD_CONST_CID_SHIFT;
1509
1510 task->txwr_rxrd.union_ctx.cleanup.ctx.cleaned_task_id = orig_xid;
1511
1512 task->txwr_rxrd.union_ctx.cleanup.ctx.rolled_tx_seq_cnt = 0;
1513 task->txwr_rxrd.union_ctx.cleanup.ctx.rolled_tx_data_offset = offset;
1514
1515 bd_count = orig_io_req->bd_tbl->bd_valid;
1516
1517 /* obtain the appropriate bd entry from relative offset */
1518 for (i = 0; i < bd_count; i++) {
1519 if (offset < bd[i].buf_len)
1520 break;
1521 offset -= bd[i].buf_len;
1522 }
1523 phys_addr += (i * sizeof(struct fcoe_bd_ctx));
1524
1525 if (orig_task_type == FCOE_TASK_TYPE_WRITE) {
1526 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.lo =
1527 (u32)phys_addr;
1528 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.hi =
1529 (u32)((u64)phys_addr >> 32);
1530 task->txwr_only.sgl_ctx.sgl.mul_sgl.sgl_size =
1531 bd_count;
1532 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_off =
1533 offset; /* adjusted offset */
1534 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_idx = i;
1535 } else {
1536 orig_task_idx = orig_xid / BNX2FC_TASKS_PER_PAGE;
1537 index = orig_xid % BNX2FC_TASKS_PER_PAGE;
1538
1539 task_page = (struct fcoe_task_ctx_entry *)
1540 interface->hba->task_ctx[orig_task_idx];
1541 orig_task = &(task_page[index]);
1542
1543 /* Multiple SGEs were used for this IO */
1544 sgl = &task->rxwr_only.union_ctx.read_info.sgl_ctx.sgl;
1545 sgl->mul_sgl.cur_sge_addr.lo = (u32)phys_addr;
1546 sgl->mul_sgl.cur_sge_addr.hi = (u32)((u64)phys_addr >> 32);
1547 sgl->mul_sgl.sgl_size = bd_count;
1548 sgl->mul_sgl.cur_sge_off = offset; /*adjusted offset */
1549 sgl->mul_sgl.cur_sge_idx = i;
1550
1551 memset(&task->rxwr_only.rx_seq_ctx, 0,
1552 sizeof(struct fcoe_rx_seq_ctx));
1553 task->rxwr_only.rx_seq_ctx.low_exp_ro = orig_offset;
1554 task->rxwr_only.rx_seq_ctx.high_exp_ro = orig_offset;
1555 }
1556 }
1557 void bnx2fc_init_cleanup_task(struct bnx2fc_cmd *io_req,
1558 struct fcoe_task_ctx_entry *task,
1559 u16 orig_xid)
1560 {
1561 u8 task_type = FCOE_TASK_TYPE_EXCHANGE_CLEANUP;
1562 struct bnx2fc_rport *tgt = io_req->tgt;
1563 u32 context_id = tgt->context_id;
1564
1565 memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
1566
1567 /* Tx Write Rx Read */
1568 /* init flags */
1569 task->txwr_rxrd.const_ctx.init_flags = task_type <<
1570 FCOE_TCE_TX_WR_RX_RD_CONST_TASK_TYPE_SHIFT;
1571 task->txwr_rxrd.const_ctx.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
1572 FCOE_TCE_TX_WR_RX_RD_CONST_CLASS_TYPE_SHIFT;
1573 if (tgt->dev_type == TYPE_TAPE)
1574 task->txwr_rxrd.const_ctx.init_flags |=
1575 FCOE_TASK_DEV_TYPE_TAPE <<
1576 FCOE_TCE_TX_WR_RX_RD_CONST_DEV_TYPE_SHIFT;
1577 else
1578 task->txwr_rxrd.const_ctx.init_flags |=
1579 FCOE_TASK_DEV_TYPE_DISK <<
1580 FCOE_TCE_TX_WR_RX_RD_CONST_DEV_TYPE_SHIFT;
1581 task->txwr_rxrd.union_ctx.cleanup.ctx.cleaned_task_id = orig_xid;
1582
1583 /* Tx flags */
1584 task->txwr_rxrd.const_ctx.tx_flags =
1585 FCOE_TASK_TX_STATE_EXCHANGE_CLEANUP <<
1586 FCOE_TCE_TX_WR_RX_RD_CONST_TX_STATE_SHIFT;
1587
1588 /* Rx Read Tx Write */
1589 task->rxwr_txrd.const_ctx.init_flags = context_id <<
1590 FCOE_TCE_RX_WR_TX_RD_CONST_CID_SHIFT;
1591 task->rxwr_txrd.var_ctx.rx_flags |= 1 <<
1592 FCOE_TCE_RX_WR_TX_RD_VAR_EXP_FIRST_FRAME_SHIFT;
1593 }
1594
1595 void bnx2fc_init_mp_task(struct bnx2fc_cmd *io_req,
1596 struct fcoe_task_ctx_entry *task)
1597 {
1598 struct bnx2fc_mp_req *mp_req = &(io_req->mp_req);
1599 struct bnx2fc_rport *tgt = io_req->tgt;
1600 struct fc_frame_header *fc_hdr;
1601 struct fcoe_ext_mul_sges_ctx *sgl;
1602 u8 task_type = 0;
1603 u64 *hdr;
1604 u64 temp_hdr[3];
1605 u32 context_id;
1606
1607
1608 /* Obtain task_type */
1609 if ((io_req->cmd_type == BNX2FC_TASK_MGMT_CMD) ||
1610 (io_req->cmd_type == BNX2FC_ELS)) {
1611 task_type = FCOE_TASK_TYPE_MIDPATH;
1612 } else if (io_req->cmd_type == BNX2FC_ABTS) {
1613 task_type = FCOE_TASK_TYPE_ABTS;
1614 }
1615
1616 memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
1617
1618 /* Setup the task from io_req for easy reference */
1619 io_req->task = task;
1620
1621 BNX2FC_IO_DBG(io_req, "Init MP task for cmd_type = %d task_type = %d\n",
1622 io_req->cmd_type, task_type);
1623
1624 /* Tx only */
1625 if ((task_type == FCOE_TASK_TYPE_MIDPATH) ||
1626 (task_type == FCOE_TASK_TYPE_UNSOLICITED)) {
1627 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.lo =
1628 (u32)mp_req->mp_req_bd_dma;
1629 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.hi =
1630 (u32)((u64)mp_req->mp_req_bd_dma >> 32);
1631 task->txwr_only.sgl_ctx.sgl.mul_sgl.sgl_size = 1;
1632 }
1633
1634 /* Tx Write Rx Read */
1635 /* init flags */
1636 task->txwr_rxrd.const_ctx.init_flags = task_type <<
1637 FCOE_TCE_TX_WR_RX_RD_CONST_TASK_TYPE_SHIFT;
1638 if (tgt->dev_type == TYPE_TAPE)
1639 task->txwr_rxrd.const_ctx.init_flags |=
1640 FCOE_TASK_DEV_TYPE_TAPE <<
1641 FCOE_TCE_TX_WR_RX_RD_CONST_DEV_TYPE_SHIFT;
1642 else
1643 task->txwr_rxrd.const_ctx.init_flags |=
1644 FCOE_TASK_DEV_TYPE_DISK <<
1645 FCOE_TCE_TX_WR_RX_RD_CONST_DEV_TYPE_SHIFT;
1646 task->txwr_rxrd.const_ctx.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
1647 FCOE_TCE_TX_WR_RX_RD_CONST_CLASS_TYPE_SHIFT;
1648
1649 /* tx flags */
1650 task->txwr_rxrd.const_ctx.tx_flags = FCOE_TASK_TX_STATE_INIT <<
1651 FCOE_TCE_TX_WR_RX_RD_CONST_TX_STATE_SHIFT;
1652
1653 /* Rx Write Tx Read */
1654 task->rxwr_txrd.const_ctx.data_2_trns = io_req->data_xfer_len;
1655
1656 /* rx flags */
1657 task->rxwr_txrd.var_ctx.rx_flags |= 1 <<
1658 FCOE_TCE_RX_WR_TX_RD_VAR_EXP_FIRST_FRAME_SHIFT;
1659
1660 context_id = tgt->context_id;
1661 task->rxwr_txrd.const_ctx.init_flags = context_id <<
1662 FCOE_TCE_RX_WR_TX_RD_CONST_CID_SHIFT;
1663
1664 fc_hdr = &(mp_req->req_fc_hdr);
1665 if (task_type == FCOE_TASK_TYPE_MIDPATH) {
1666 fc_hdr->fh_ox_id = cpu_to_be16(io_req->xid);
1667 fc_hdr->fh_rx_id = htons(0xffff);
1668 task->rxwr_txrd.var_ctx.rx_id = 0xffff;
1669 } else if (task_type == FCOE_TASK_TYPE_UNSOLICITED) {
1670 fc_hdr->fh_rx_id = cpu_to_be16(io_req->xid);
1671 }
1672
1673 /* Fill FC Header into middle path buffer */
1674 hdr = (u64 *) &task->txwr_rxrd.union_ctx.tx_frame.fc_hdr;
1675 memcpy(temp_hdr, fc_hdr, sizeof(temp_hdr));
1676 hdr[0] = cpu_to_be64(temp_hdr[0]);
1677 hdr[1] = cpu_to_be64(temp_hdr[1]);
1678 hdr[2] = cpu_to_be64(temp_hdr[2]);
1679
1680 /* Rx Only */
1681 if (task_type == FCOE_TASK_TYPE_MIDPATH) {
1682 sgl = &task->rxwr_only.union_ctx.read_info.sgl_ctx.sgl;
1683
1684 sgl->mul_sgl.cur_sge_addr.lo = (u32)mp_req->mp_resp_bd_dma;
1685 sgl->mul_sgl.cur_sge_addr.hi =
1686 (u32)((u64)mp_req->mp_resp_bd_dma >> 32);
1687 sgl->mul_sgl.sgl_size = 1;
1688 }
1689 }
1690
1691 void bnx2fc_init_task(struct bnx2fc_cmd *io_req,
1692 struct fcoe_task_ctx_entry *task)
1693 {
1694 u8 task_type;
1695 struct scsi_cmnd *sc_cmd = io_req->sc_cmd;
1696 struct io_bdt *bd_tbl = io_req->bd_tbl;
1697 struct bnx2fc_rport *tgt = io_req->tgt;
1698 struct fcoe_cached_sge_ctx *cached_sge;
1699 struct fcoe_ext_mul_sges_ctx *sgl;
1700 int dev_type = tgt->dev_type;
1701 u64 *fcp_cmnd;
1702 u64 tmp_fcp_cmnd[4];
1703 u32 context_id;
1704 int cnt, i;
1705 int bd_count;
1706
1707 memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
1708
1709 /* Setup the task from io_req for easy reference */
1710 io_req->task = task;
1711
1712 if (sc_cmd->sc_data_direction == DMA_TO_DEVICE)
1713 task_type = FCOE_TASK_TYPE_WRITE;
1714 else
1715 task_type = FCOE_TASK_TYPE_READ;
1716
1717 /* Tx only */
1718 bd_count = bd_tbl->bd_valid;
1719 if (task_type == FCOE_TASK_TYPE_WRITE) {
1720 if ((dev_type == TYPE_DISK) && (bd_count == 1)) {
1721 struct fcoe_bd_ctx *fcoe_bd_tbl = bd_tbl->bd_tbl;
1722
1723 task->txwr_only.sgl_ctx.cached_sge.cur_buf_addr.lo =
1724 fcoe_bd_tbl->buf_addr_lo;
1725 task->txwr_only.sgl_ctx.cached_sge.cur_buf_addr.hi =
1726 fcoe_bd_tbl->buf_addr_hi;
1727 task->txwr_only.sgl_ctx.cached_sge.cur_buf_rem =
1728 fcoe_bd_tbl->buf_len;
1729
1730 task->txwr_rxrd.const_ctx.init_flags |= 1 <<
1731 FCOE_TCE_TX_WR_RX_RD_CONST_CACHED_SGE_SHIFT;
1732 } else {
1733 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.lo =
1734 (u32)bd_tbl->bd_tbl_dma;
1735 task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.hi =
1736 (u32)((u64)bd_tbl->bd_tbl_dma >> 32);
1737 task->txwr_only.sgl_ctx.sgl.mul_sgl.sgl_size =
1738 bd_tbl->bd_valid;
1739 }
1740 }
1741
1742 /*Tx Write Rx Read */
1743 /* Init state to NORMAL */
1744 task->txwr_rxrd.const_ctx.init_flags |= task_type <<
1745 FCOE_TCE_TX_WR_RX_RD_CONST_TASK_TYPE_SHIFT;
1746 if (dev_type == TYPE_TAPE) {
1747 task->txwr_rxrd.const_ctx.init_flags |=
1748 FCOE_TASK_DEV_TYPE_TAPE <<
1749 FCOE_TCE_TX_WR_RX_RD_CONST_DEV_TYPE_SHIFT;
1750 io_req->rec_retry = 0;
1751 io_req->rec_retry = 0;
1752 } else
1753 task->txwr_rxrd.const_ctx.init_flags |=
1754 FCOE_TASK_DEV_TYPE_DISK <<
1755 FCOE_TCE_TX_WR_RX_RD_CONST_DEV_TYPE_SHIFT;
1756 task->txwr_rxrd.const_ctx.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
1757 FCOE_TCE_TX_WR_RX_RD_CONST_CLASS_TYPE_SHIFT;
1758 /* tx flags */
1759 task->txwr_rxrd.const_ctx.tx_flags = FCOE_TASK_TX_STATE_NORMAL <<
1760 FCOE_TCE_TX_WR_RX_RD_CONST_TX_STATE_SHIFT;
1761
1762 /* Set initial seq counter */
1763 task->txwr_rxrd.union_ctx.tx_seq.ctx.seq_cnt = 1;
1764
1765 /* Fill FCP_CMND IU */
1766 fcp_cmnd = (u64 *)
1767 task->txwr_rxrd.union_ctx.fcp_cmd.opaque;
1768 bnx2fc_build_fcp_cmnd(io_req, (struct fcp_cmnd *)&tmp_fcp_cmnd);
1769
1770 /* swap fcp_cmnd */
1771 cnt = sizeof(struct fcp_cmnd) / sizeof(u64);
1772
1773 for (i = 0; i < cnt; i++) {
1774 *fcp_cmnd = cpu_to_be64(tmp_fcp_cmnd[i]);
1775 fcp_cmnd++;
1776 }
1777
1778 /* Rx Write Tx Read */
1779 task->rxwr_txrd.const_ctx.data_2_trns = io_req->data_xfer_len;
1780
1781 context_id = tgt->context_id;
1782 task->rxwr_txrd.const_ctx.init_flags = context_id <<
1783 FCOE_TCE_RX_WR_TX_RD_CONST_CID_SHIFT;
1784
1785 /* rx flags */
1786 /* Set state to "waiting for the first packet" */
1787 task->rxwr_txrd.var_ctx.rx_flags |= 1 <<
1788 FCOE_TCE_RX_WR_TX_RD_VAR_EXP_FIRST_FRAME_SHIFT;
1789
1790 task->rxwr_txrd.var_ctx.rx_id = 0xffff;
1791
1792 /* Rx Only */
1793 cached_sge = &task->rxwr_only.union_ctx.read_info.sgl_ctx.cached_sge;
1794 sgl = &task->rxwr_only.union_ctx.read_info.sgl_ctx.sgl;
1795 bd_count = bd_tbl->bd_valid;
1796 if (task_type == FCOE_TASK_TYPE_READ &&
1797 dev_type == TYPE_DISK) {
1798 if (bd_count == 1) {
1799
1800 struct fcoe_bd_ctx *fcoe_bd_tbl = bd_tbl->bd_tbl;
1801
1802 cached_sge->cur_buf_addr.lo = fcoe_bd_tbl->buf_addr_lo;
1803 cached_sge->cur_buf_addr.hi = fcoe_bd_tbl->buf_addr_hi;
1804 cached_sge->cur_buf_rem = fcoe_bd_tbl->buf_len;
1805 task->txwr_rxrd.const_ctx.init_flags |= 1 <<
1806 FCOE_TCE_TX_WR_RX_RD_CONST_CACHED_SGE_SHIFT;
1807 } else if (bd_count == 2) {
1808 struct fcoe_bd_ctx *fcoe_bd_tbl = bd_tbl->bd_tbl;
1809
1810 cached_sge->cur_buf_addr.lo = fcoe_bd_tbl->buf_addr_lo;
1811 cached_sge->cur_buf_addr.hi = fcoe_bd_tbl->buf_addr_hi;
1812 cached_sge->cur_buf_rem = fcoe_bd_tbl->buf_len;
1813
1814 fcoe_bd_tbl++;
1815 cached_sge->second_buf_addr.lo =
1816 fcoe_bd_tbl->buf_addr_lo;
1817 cached_sge->second_buf_addr.hi =
1818 fcoe_bd_tbl->buf_addr_hi;
1819 cached_sge->second_buf_rem = fcoe_bd_tbl->buf_len;
1820 task->txwr_rxrd.const_ctx.init_flags |= 1 <<
1821 FCOE_TCE_TX_WR_RX_RD_CONST_CACHED_SGE_SHIFT;
1822 } else {
1823
1824 sgl->mul_sgl.cur_sge_addr.lo = (u32)bd_tbl->bd_tbl_dma;
1825 sgl->mul_sgl.cur_sge_addr.hi =
1826 (u32)((u64)bd_tbl->bd_tbl_dma >> 32);
1827 sgl->mul_sgl.sgl_size = bd_count;
1828 }
1829 } else {
1830 sgl->mul_sgl.cur_sge_addr.lo = (u32)bd_tbl->bd_tbl_dma;
1831 sgl->mul_sgl.cur_sge_addr.hi =
1832 (u32)((u64)bd_tbl->bd_tbl_dma >> 32);
1833 sgl->mul_sgl.sgl_size = bd_count;
1834 }
1835 }
1836
1837 /**
1838 * bnx2fc_setup_task_ctx - allocate and map task context
1839 *
1840 * @hba: pointer to adapter structure
1841 *
1842 * allocate memory for task context, and associated BD table to be used
1843 * by firmware
1844 *
1845 */
1846 int bnx2fc_setup_task_ctx(struct bnx2fc_hba *hba)
1847 {
1848 int rc = 0;
1849 struct regpair *task_ctx_bdt;
1850 dma_addr_t addr;
1851 int i;
1852
1853 /*
1854 * Allocate task context bd table. A page size of bd table
1855 * can map 256 buffers. Each buffer contains 32 task context
1856 * entries. Hence the limit with one page is 8192 task context
1857 * entries.
1858 */
1859 hba->task_ctx_bd_tbl = dma_alloc_coherent(&hba->pcidev->dev,
1860 PAGE_SIZE,
1861 &hba->task_ctx_bd_dma,
1862 GFP_KERNEL);
1863 if (!hba->task_ctx_bd_tbl) {
1864 printk(KERN_ERR PFX "unable to allocate task context BDT\n");
1865 rc = -1;
1866 goto out;
1867 }
1868 memset(hba->task_ctx_bd_tbl, 0, PAGE_SIZE);
1869
1870 /*
1871 * Allocate task_ctx which is an array of pointers pointing to
1872 * a page containing 32 task contexts
1873 */
1874 hba->task_ctx = kzalloc((BNX2FC_TASK_CTX_ARR_SZ * sizeof(void *)),
1875 GFP_KERNEL);
1876 if (!hba->task_ctx) {
1877 printk(KERN_ERR PFX "unable to allocate task context array\n");
1878 rc = -1;
1879 goto out1;
1880 }
1881
1882 /*
1883 * Allocate task_ctx_dma which is an array of dma addresses
1884 */
1885 hba->task_ctx_dma = kmalloc((BNX2FC_TASK_CTX_ARR_SZ *
1886 sizeof(dma_addr_t)), GFP_KERNEL);
1887 if (!hba->task_ctx_dma) {
1888 printk(KERN_ERR PFX "unable to alloc context mapping array\n");
1889 rc = -1;
1890 goto out2;
1891 }
1892
1893 task_ctx_bdt = (struct regpair *)hba->task_ctx_bd_tbl;
1894 for (i = 0; i < BNX2FC_TASK_CTX_ARR_SZ; i++) {
1895
1896 hba->task_ctx[i] = dma_alloc_coherent(&hba->pcidev->dev,
1897 PAGE_SIZE,
1898 &hba->task_ctx_dma[i],
1899 GFP_KERNEL);
1900 if (!hba->task_ctx[i]) {
1901 printk(KERN_ERR PFX "unable to alloc task context\n");
1902 rc = -1;
1903 goto out3;
1904 }
1905 memset(hba->task_ctx[i], 0, PAGE_SIZE);
1906 addr = (u64)hba->task_ctx_dma[i];
1907 task_ctx_bdt->hi = cpu_to_le32((u64)addr >> 32);
1908 task_ctx_bdt->lo = cpu_to_le32((u32)addr);
1909 task_ctx_bdt++;
1910 }
1911 return 0;
1912
1913 out3:
1914 for (i = 0; i < BNX2FC_TASK_CTX_ARR_SZ; i++) {
1915 if (hba->task_ctx[i]) {
1916
1917 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1918 hba->task_ctx[i], hba->task_ctx_dma[i]);
1919 hba->task_ctx[i] = NULL;
1920 }
1921 }
1922
1923 kfree(hba->task_ctx_dma);
1924 hba->task_ctx_dma = NULL;
1925 out2:
1926 kfree(hba->task_ctx);
1927 hba->task_ctx = NULL;
1928 out1:
1929 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1930 hba->task_ctx_bd_tbl, hba->task_ctx_bd_dma);
1931 hba->task_ctx_bd_tbl = NULL;
1932 out:
1933 return rc;
1934 }
1935
1936 void bnx2fc_free_task_ctx(struct bnx2fc_hba *hba)
1937 {
1938 int i;
1939
1940 if (hba->task_ctx_bd_tbl) {
1941 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1942 hba->task_ctx_bd_tbl,
1943 hba->task_ctx_bd_dma);
1944 hba->task_ctx_bd_tbl = NULL;
1945 }
1946
1947 if (hba->task_ctx) {
1948 for (i = 0; i < BNX2FC_TASK_CTX_ARR_SZ; i++) {
1949 if (hba->task_ctx[i]) {
1950 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1951 hba->task_ctx[i],
1952 hba->task_ctx_dma[i]);
1953 hba->task_ctx[i] = NULL;
1954 }
1955 }
1956 kfree(hba->task_ctx);
1957 hba->task_ctx = NULL;
1958 }
1959
1960 kfree(hba->task_ctx_dma);
1961 hba->task_ctx_dma = NULL;
1962 }
1963
1964 static void bnx2fc_free_hash_table(struct bnx2fc_hba *hba)
1965 {
1966 int i;
1967 int segment_count;
1968 int hash_table_size;
1969 u32 *pbl;
1970
1971 segment_count = hba->hash_tbl_segment_count;
1972 hash_table_size = BNX2FC_NUM_MAX_SESS * BNX2FC_MAX_ROWS_IN_HASH_TBL *
1973 sizeof(struct fcoe_hash_table_entry);
1974
1975 pbl = hba->hash_tbl_pbl;
1976 for (i = 0; i < segment_count; ++i) {
1977 dma_addr_t dma_address;
1978
1979 dma_address = le32_to_cpu(*pbl);
1980 ++pbl;
1981 dma_address += ((u64)le32_to_cpu(*pbl)) << 32;
1982 ++pbl;
1983 dma_free_coherent(&hba->pcidev->dev,
1984 BNX2FC_HASH_TBL_CHUNK_SIZE,
1985 hba->hash_tbl_segments[i],
1986 dma_address);
1987
1988 }
1989
1990 if (hba->hash_tbl_pbl) {
1991 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1992 hba->hash_tbl_pbl,
1993 hba->hash_tbl_pbl_dma);
1994 hba->hash_tbl_pbl = NULL;
1995 }
1996 }
1997
1998 static int bnx2fc_allocate_hash_table(struct bnx2fc_hba *hba)
1999 {
2000 int i;
2001 int hash_table_size;
2002 int segment_count;
2003 int segment_array_size;
2004 int dma_segment_array_size;
2005 dma_addr_t *dma_segment_array;
2006 u32 *pbl;
2007
2008 hash_table_size = BNX2FC_NUM_MAX_SESS * BNX2FC_MAX_ROWS_IN_HASH_TBL *
2009 sizeof(struct fcoe_hash_table_entry);
2010
2011 segment_count = hash_table_size + BNX2FC_HASH_TBL_CHUNK_SIZE - 1;
2012 segment_count /= BNX2FC_HASH_TBL_CHUNK_SIZE;
2013 hba->hash_tbl_segment_count = segment_count;
2014
2015 segment_array_size = segment_count * sizeof(*hba->hash_tbl_segments);
2016 hba->hash_tbl_segments = kzalloc(segment_array_size, GFP_KERNEL);
2017 if (!hba->hash_tbl_segments) {
2018 printk(KERN_ERR PFX "hash table pointers alloc failed\n");
2019 return -ENOMEM;
2020 }
2021 dma_segment_array_size = segment_count * sizeof(*dma_segment_array);
2022 dma_segment_array = kzalloc(dma_segment_array_size, GFP_KERNEL);
2023 if (!dma_segment_array) {
2024 printk(KERN_ERR PFX "hash table pointers (dma) alloc failed\n");
2025 return -ENOMEM;
2026 }
2027
2028 for (i = 0; i < segment_count; ++i) {
2029 hba->hash_tbl_segments[i] =
2030 dma_alloc_coherent(&hba->pcidev->dev,
2031 BNX2FC_HASH_TBL_CHUNK_SIZE,
2032 &dma_segment_array[i],
2033 GFP_KERNEL);
2034 if (!hba->hash_tbl_segments[i]) {
2035 printk(KERN_ERR PFX "hash segment alloc failed\n");
2036 while (--i >= 0) {
2037 dma_free_coherent(&hba->pcidev->dev,
2038 BNX2FC_HASH_TBL_CHUNK_SIZE,
2039 hba->hash_tbl_segments[i],
2040 dma_segment_array[i]);
2041 hba->hash_tbl_segments[i] = NULL;
2042 }
2043 kfree(dma_segment_array);
2044 return -ENOMEM;
2045 }
2046 memset(hba->hash_tbl_segments[i], 0,
2047 BNX2FC_HASH_TBL_CHUNK_SIZE);
2048 }
2049
2050 hba->hash_tbl_pbl = dma_alloc_coherent(&hba->pcidev->dev,
2051 PAGE_SIZE,
2052 &hba->hash_tbl_pbl_dma,
2053 GFP_KERNEL);
2054 if (!hba->hash_tbl_pbl) {
2055 printk(KERN_ERR PFX "hash table pbl alloc failed\n");
2056 kfree(dma_segment_array);
2057 return -ENOMEM;
2058 }
2059 memset(hba->hash_tbl_pbl, 0, PAGE_SIZE);
2060
2061 pbl = hba->hash_tbl_pbl;
2062 for (i = 0; i < segment_count; ++i) {
2063 u64 paddr = dma_segment_array[i];
2064 *pbl = cpu_to_le32((u32) paddr);
2065 ++pbl;
2066 *pbl = cpu_to_le32((u32) (paddr >> 32));
2067 ++pbl;
2068 }
2069 pbl = hba->hash_tbl_pbl;
2070 i = 0;
2071 while (*pbl && *(pbl + 1)) {
2072 u32 lo;
2073 u32 hi;
2074 lo = *pbl;
2075 ++pbl;
2076 hi = *pbl;
2077 ++pbl;
2078 ++i;
2079 }
2080 kfree(dma_segment_array);
2081 return 0;
2082 }
2083
2084 /**
2085 * bnx2fc_setup_fw_resc - Allocate and map hash table and dummy buffer
2086 *
2087 * @hba: Pointer to adapter structure
2088 *
2089 */
2090 int bnx2fc_setup_fw_resc(struct bnx2fc_hba *hba)
2091 {
2092 u64 addr;
2093 u32 mem_size;
2094 int i;
2095
2096 if (bnx2fc_allocate_hash_table(hba))
2097 return -ENOMEM;
2098
2099 mem_size = BNX2FC_NUM_MAX_SESS * sizeof(struct regpair);
2100 hba->t2_hash_tbl_ptr = dma_alloc_coherent(&hba->pcidev->dev, mem_size,
2101 &hba->t2_hash_tbl_ptr_dma,
2102 GFP_KERNEL);
2103 if (!hba->t2_hash_tbl_ptr) {
2104 printk(KERN_ERR PFX "unable to allocate t2 hash table ptr\n");
2105 bnx2fc_free_fw_resc(hba);
2106 return -ENOMEM;
2107 }
2108 memset(hba->t2_hash_tbl_ptr, 0x00, mem_size);
2109
2110 mem_size = BNX2FC_NUM_MAX_SESS *
2111 sizeof(struct fcoe_t2_hash_table_entry);
2112 hba->t2_hash_tbl = dma_alloc_coherent(&hba->pcidev->dev, mem_size,
2113 &hba->t2_hash_tbl_dma,
2114 GFP_KERNEL);
2115 if (!hba->t2_hash_tbl) {
2116 printk(KERN_ERR PFX "unable to allocate t2 hash table\n");
2117 bnx2fc_free_fw_resc(hba);
2118 return -ENOMEM;
2119 }
2120 memset(hba->t2_hash_tbl, 0x00, mem_size);
2121 for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
2122 addr = (unsigned long) hba->t2_hash_tbl_dma +
2123 ((i+1) * sizeof(struct fcoe_t2_hash_table_entry));
2124 hba->t2_hash_tbl[i].next.lo = addr & 0xffffffff;
2125 hba->t2_hash_tbl[i].next.hi = addr >> 32;
2126 }
2127
2128 hba->dummy_buffer = dma_alloc_coherent(&hba->pcidev->dev,
2129 PAGE_SIZE, &hba->dummy_buf_dma,
2130 GFP_KERNEL);
2131 if (!hba->dummy_buffer) {
2132 printk(KERN_ERR PFX "unable to alloc MP Dummy Buffer\n");
2133 bnx2fc_free_fw_resc(hba);
2134 return -ENOMEM;
2135 }
2136
2137 hba->stats_buffer = dma_alloc_coherent(&hba->pcidev->dev,
2138 PAGE_SIZE,
2139 &hba->stats_buf_dma,
2140 GFP_KERNEL);
2141 if (!hba->stats_buffer) {
2142 printk(KERN_ERR PFX "unable to alloc Stats Buffer\n");
2143 bnx2fc_free_fw_resc(hba);
2144 return -ENOMEM;
2145 }
2146 memset(hba->stats_buffer, 0x00, PAGE_SIZE);
2147
2148 return 0;
2149 }
2150
2151 void bnx2fc_free_fw_resc(struct bnx2fc_hba *hba)
2152 {
2153 u32 mem_size;
2154
2155 if (hba->stats_buffer) {
2156 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
2157 hba->stats_buffer, hba->stats_buf_dma);
2158 hba->stats_buffer = NULL;
2159 }
2160
2161 if (hba->dummy_buffer) {
2162 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
2163 hba->dummy_buffer, hba->dummy_buf_dma);
2164 hba->dummy_buffer = NULL;
2165 }
2166
2167 if (hba->t2_hash_tbl_ptr) {
2168 mem_size = BNX2FC_NUM_MAX_SESS * sizeof(struct regpair);
2169 dma_free_coherent(&hba->pcidev->dev, mem_size,
2170 hba->t2_hash_tbl_ptr,
2171 hba->t2_hash_tbl_ptr_dma);
2172 hba->t2_hash_tbl_ptr = NULL;
2173 }
2174
2175 if (hba->t2_hash_tbl) {
2176 mem_size = BNX2FC_NUM_MAX_SESS *
2177 sizeof(struct fcoe_t2_hash_table_entry);
2178 dma_free_coherent(&hba->pcidev->dev, mem_size,
2179 hba->t2_hash_tbl, hba->t2_hash_tbl_dma);
2180 hba->t2_hash_tbl = NULL;
2181 }
2182 bnx2fc_free_hash_table(hba);
2183 }