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a3667aae NKI |
1 | /* |
2 | * This file is part of the Chelsio FCoE driver for Linux. | |
3 | * | |
4 | * Copyright (c) 2008-2012 Chelsio Communications, Inc. All rights reserved. | |
5 | * | |
6 | * This software is available to you under a choice of one of two | |
7 | * licenses. You may choose to be licensed under the terms of the GNU | |
8 | * General Public License (GPL) Version 2, available from the file | |
9 | * COPYING in the main directory of this source tree, or the | |
10 | * OpenIB.org BSD license below: | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or | |
13 | * without modification, are permitted provided that the following | |
14 | * conditions are met: | |
15 | * | |
16 | * - Redistributions of source code must retain the above | |
17 | * copyright notice, this list of conditions and the following | |
18 | * disclaimer. | |
19 | * | |
20 | * - Redistributions in binary form must reproduce the above | |
21 | * copyright notice, this list of conditions and the following | |
22 | * disclaimer in the documentation and/or other materials | |
23 | * provided with the distribution. | |
24 | * | |
25 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
26 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
27 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
28 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
29 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
30 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
31 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
32 | * SOFTWARE. | |
33 | */ | |
34 | ||
35 | #include <linux/kernel.h> | |
36 | #include <linux/delay.h> | |
37 | #include <linux/slab.h> | |
38 | #include <linux/utsname.h> | |
39 | #include <scsi/scsi_device.h> | |
40 | #include <scsi/scsi_transport_fc.h> | |
41 | #include <asm/unaligned.h> | |
42 | #include <scsi/fc/fc_els.h> | |
43 | #include <scsi/fc/fc_fs.h> | |
44 | #include <scsi/fc/fc_gs.h> | |
45 | #include <scsi/fc/fc_ms.h> | |
46 | ||
47 | #include "csio_hw.h" | |
48 | #include "csio_mb.h" | |
49 | #include "csio_lnode.h" | |
50 | #include "csio_rnode.h" | |
51 | ||
52 | int csio_fcoe_rnodes = 1024; | |
53 | int csio_fdmi_enable = 1; | |
54 | ||
55 | #define PORT_ID_PTR(_x) ((uint8_t *)(&_x) + 1) | |
56 | ||
57 | /* Lnode SM declarations */ | |
58 | static void csio_lns_uninit(struct csio_lnode *, enum csio_ln_ev); | |
59 | static void csio_lns_online(struct csio_lnode *, enum csio_ln_ev); | |
60 | static void csio_lns_ready(struct csio_lnode *, enum csio_ln_ev); | |
61 | static void csio_lns_offline(struct csio_lnode *, enum csio_ln_ev); | |
62 | ||
63 | static int csio_ln_mgmt_submit_req(struct csio_ioreq *, | |
64 | void (*io_cbfn) (struct csio_hw *, struct csio_ioreq *), | |
65 | enum fcoe_cmn_type, struct csio_dma_buf *, uint32_t); | |
66 | ||
67 | /* LN event mapping */ | |
68 | static enum csio_ln_ev fwevt_to_lnevt[] = { | |
69 | CSIO_LNE_NONE, /* None */ | |
70 | CSIO_LNE_NONE, /* PLOGI_ACC_RCVD */ | |
71 | CSIO_LNE_NONE, /* PLOGI_RJT_RCVD */ | |
72 | CSIO_LNE_NONE, /* PLOGI_RCVD */ | |
73 | CSIO_LNE_NONE, /* PLOGO_RCVD */ | |
74 | CSIO_LNE_NONE, /* PRLI_ACC_RCVD */ | |
75 | CSIO_LNE_NONE, /* PRLI_RJT_RCVD */ | |
76 | CSIO_LNE_NONE, /* PRLI_RCVD */ | |
77 | CSIO_LNE_NONE, /* PRLO_RCVD */ | |
78 | CSIO_LNE_NONE, /* NPORT_ID_CHGD */ | |
79 | CSIO_LNE_LOGO, /* FLOGO_RCVD */ | |
80 | CSIO_LNE_LOGO, /* CLR_VIRT_LNK_RCVD */ | |
81 | CSIO_LNE_FAB_INIT_DONE,/* FLOGI_ACC_RCVD */ | |
82 | CSIO_LNE_NONE, /* FLOGI_RJT_RCVD */ | |
83 | CSIO_LNE_FAB_INIT_DONE,/* FDISC_ACC_RCVD */ | |
84 | CSIO_LNE_NONE, /* FDISC_RJT_RCVD */ | |
85 | CSIO_LNE_NONE, /* FLOGI_TMO_MAX_RETRY */ | |
86 | CSIO_LNE_NONE, /* IMPL_LOGO_ADISC_ACC */ | |
87 | CSIO_LNE_NONE, /* IMPL_LOGO_ADISC_RJT */ | |
88 | CSIO_LNE_NONE, /* IMPL_LOGO_ADISC_CNFLT */ | |
89 | CSIO_LNE_NONE, /* PRLI_TMO */ | |
90 | CSIO_LNE_NONE, /* ADISC_TMO */ | |
91 | CSIO_LNE_NONE, /* RSCN_DEV_LOST */ | |
92 | CSIO_LNE_NONE, /* SCR_ACC_RCVD */ | |
93 | CSIO_LNE_NONE, /* ADISC_RJT_RCVD */ | |
94 | CSIO_LNE_NONE, /* LOGO_SNT */ | |
95 | CSIO_LNE_NONE, /* PROTO_ERR_IMPL_LOGO */ | |
96 | }; | |
97 | ||
98 | #define CSIO_FWE_TO_LNE(_evt) ((_evt > PROTO_ERR_IMPL_LOGO) ? \ | |
99 | CSIO_LNE_NONE : \ | |
100 | fwevt_to_lnevt[_evt]) | |
101 | ||
102 | #define csio_ct_rsp(cp) (((struct fc_ct_hdr *)cp)->ct_cmd) | |
103 | #define csio_ct_reason(cp) (((struct fc_ct_hdr *)cp)->ct_reason) | |
104 | #define csio_ct_expl(cp) (((struct fc_ct_hdr *)cp)->ct_explan) | |
105 | #define csio_ct_get_pld(cp) ((void *)(((uint8_t *)cp) + FC_CT_HDR_LEN)) | |
106 | ||
107 | /* | |
108 | * csio_ln_match_by_portid - lookup lnode using given portid. | |
109 | * @hw: HW module | |
110 | * @portid: port-id. | |
111 | * | |
112 | * If found, returns lnode matching given portid otherwise returns NULL. | |
113 | */ | |
114 | static struct csio_lnode * | |
115 | csio_ln_lookup_by_portid(struct csio_hw *hw, uint8_t portid) | |
116 | { | |
117 | struct csio_lnode *ln = hw->rln; | |
118 | struct list_head *tmp; | |
119 | ||
120 | /* Match siblings lnode with portid */ | |
121 | list_for_each(tmp, &hw->sln_head) { | |
122 | ln = (struct csio_lnode *) tmp; | |
123 | if (ln->portid == portid) | |
124 | return ln; | |
125 | } | |
126 | ||
127 | return NULL; | |
128 | } | |
129 | ||
130 | /* | |
131 | * csio_ln_lookup_by_vnpi - Lookup lnode using given vnp id. | |
132 | * @hw - HW module | |
133 | * @vnpi - vnp index. | |
134 | * Returns - If found, returns lnode matching given vnp id | |
135 | * otherwise returns NULL. | |
136 | */ | |
137 | static struct csio_lnode * | |
138 | csio_ln_lookup_by_vnpi(struct csio_hw *hw, uint32_t vnp_id) | |
139 | { | |
140 | struct list_head *tmp1, *tmp2; | |
141 | struct csio_lnode *sln = NULL, *cln = NULL; | |
142 | ||
143 | if (list_empty(&hw->sln_head)) { | |
144 | CSIO_INC_STATS(hw, n_lnlkup_miss); | |
145 | return NULL; | |
146 | } | |
147 | /* Traverse sibling lnodes */ | |
148 | list_for_each(tmp1, &hw->sln_head) { | |
149 | sln = (struct csio_lnode *) tmp1; | |
150 | ||
151 | /* Match sibling lnode */ | |
152 | if (sln->vnp_flowid == vnp_id) | |
153 | return sln; | |
154 | ||
155 | if (list_empty(&sln->cln_head)) | |
156 | continue; | |
157 | ||
158 | /* Traverse children lnodes */ | |
159 | list_for_each(tmp2, &sln->cln_head) { | |
160 | cln = (struct csio_lnode *) tmp2; | |
161 | ||
162 | if (cln->vnp_flowid == vnp_id) | |
163 | return cln; | |
164 | } | |
165 | } | |
166 | CSIO_INC_STATS(hw, n_lnlkup_miss); | |
167 | return NULL; | |
168 | } | |
169 | ||
170 | /** | |
171 | * csio_lnode_lookup_by_wwpn - Lookup lnode using given wwpn. | |
172 | * @hw: HW module. | |
173 | * @wwpn: WWPN. | |
174 | * | |
175 | * If found, returns lnode matching given wwpn, returns NULL otherwise. | |
176 | */ | |
177 | struct csio_lnode * | |
178 | csio_lnode_lookup_by_wwpn(struct csio_hw *hw, uint8_t *wwpn) | |
179 | { | |
180 | struct list_head *tmp1, *tmp2; | |
181 | struct csio_lnode *sln = NULL, *cln = NULL; | |
182 | ||
183 | if (list_empty(&hw->sln_head)) { | |
184 | CSIO_INC_STATS(hw, n_lnlkup_miss); | |
185 | return NULL; | |
186 | } | |
187 | /* Traverse sibling lnodes */ | |
188 | list_for_each(tmp1, &hw->sln_head) { | |
189 | sln = (struct csio_lnode *) tmp1; | |
190 | ||
191 | /* Match sibling lnode */ | |
192 | if (!memcmp(csio_ln_wwpn(sln), wwpn, 8)) | |
193 | return sln; | |
194 | ||
195 | if (list_empty(&sln->cln_head)) | |
196 | continue; | |
197 | ||
198 | /* Traverse children lnodes */ | |
199 | list_for_each(tmp2, &sln->cln_head) { | |
200 | cln = (struct csio_lnode *) tmp2; | |
201 | ||
202 | if (!memcmp(csio_ln_wwpn(cln), wwpn, 8)) | |
203 | return cln; | |
204 | } | |
205 | } | |
206 | return NULL; | |
207 | } | |
208 | ||
209 | /* FDMI */ | |
210 | static void | |
211 | csio_fill_ct_iu(void *buf, uint8_t type, uint8_t sub_type, uint16_t op) | |
212 | { | |
213 | struct fc_ct_hdr *cmd = (struct fc_ct_hdr *)buf; | |
214 | cmd->ct_rev = FC_CT_REV; | |
215 | cmd->ct_fs_type = type; | |
216 | cmd->ct_fs_subtype = sub_type; | |
5036f0a0 | 217 | cmd->ct_cmd = htons(op); |
a3667aae NKI |
218 | } |
219 | ||
220 | static int | |
221 | csio_hostname(uint8_t *buf, size_t buf_len) | |
222 | { | |
223 | if (snprintf(buf, buf_len, "%s", init_utsname()->nodename) > 0) | |
224 | return 0; | |
225 | return -1; | |
226 | } | |
227 | ||
228 | static int | |
229 | csio_osname(uint8_t *buf, size_t buf_len) | |
230 | { | |
231 | if (snprintf(buf, buf_len, "%s %s %s", | |
232 | init_utsname()->sysname, | |
233 | init_utsname()->release, | |
234 | init_utsname()->version) > 0) | |
235 | return 0; | |
236 | ||
237 | return -1; | |
238 | } | |
239 | ||
240 | static inline void | |
241 | csio_append_attrib(uint8_t **ptr, uint16_t type, uint8_t *val, uint16_t len) | |
242 | { | |
243 | struct fc_fdmi_attr_entry *ae = (struct fc_fdmi_attr_entry *)*ptr; | |
244 | ae->type = htons(type); | |
245 | len += 4; /* includes attribute type and length */ | |
246 | len = (len + 3) & ~3; /* should be multiple of 4 bytes */ | |
247 | ae->len = htons(len); | |
a3667aae NKI |
248 | memcpy(ae->value, val, len); |
249 | *ptr += len; | |
250 | } | |
251 | ||
252 | /* | |
253 | * csio_ln_fdmi_done - FDMI registeration completion | |
254 | * @hw: HW context | |
255 | * @fdmi_req: fdmi request | |
256 | */ | |
257 | static void | |
258 | csio_ln_fdmi_done(struct csio_hw *hw, struct csio_ioreq *fdmi_req) | |
259 | { | |
260 | void *cmd; | |
261 | struct csio_lnode *ln = fdmi_req->lnode; | |
262 | ||
263 | if (fdmi_req->wr_status != FW_SUCCESS) { | |
264 | csio_ln_dbg(ln, "WR error:%x in processing fdmi rpa cmd\n", | |
265 | fdmi_req->wr_status); | |
266 | CSIO_INC_STATS(ln, n_fdmi_err); | |
267 | } | |
268 | ||
269 | cmd = fdmi_req->dma_buf.vaddr; | |
270 | if (ntohs(csio_ct_rsp(cmd)) != FC_FS_ACC) { | |
271 | csio_ln_dbg(ln, "fdmi rpa cmd rejected reason %x expl %x\n", | |
272 | csio_ct_reason(cmd), csio_ct_expl(cmd)); | |
273 | } | |
274 | } | |
275 | ||
276 | /* | |
277 | * csio_ln_fdmi_rhba_cbfn - RHBA completion | |
278 | * @hw: HW context | |
279 | * @fdmi_req: fdmi request | |
280 | */ | |
281 | static void | |
282 | csio_ln_fdmi_rhba_cbfn(struct csio_hw *hw, struct csio_ioreq *fdmi_req) | |
283 | { | |
284 | void *cmd; | |
285 | uint8_t *pld; | |
286 | uint32_t len = 0; | |
5036f0a0 NKI |
287 | __be32 val; |
288 | __be16 mfs; | |
289 | uint32_t numattrs = 0; | |
a3667aae NKI |
290 | struct csio_lnode *ln = fdmi_req->lnode; |
291 | struct fs_fdmi_attrs *attrib_blk; | |
292 | struct fc_fdmi_port_name *port_name; | |
293 | uint8_t buf[64]; | |
a3667aae NKI |
294 | uint8_t *fc4_type; |
295 | ||
296 | if (fdmi_req->wr_status != FW_SUCCESS) { | |
297 | csio_ln_dbg(ln, "WR error:%x in processing fdmi rhba cmd\n", | |
298 | fdmi_req->wr_status); | |
299 | CSIO_INC_STATS(ln, n_fdmi_err); | |
300 | } | |
301 | ||
302 | cmd = fdmi_req->dma_buf.vaddr; | |
303 | if (ntohs(csio_ct_rsp(cmd)) != FC_FS_ACC) { | |
304 | csio_ln_dbg(ln, "fdmi rhba cmd rejected reason %x expl %x\n", | |
305 | csio_ct_reason(cmd), csio_ct_expl(cmd)); | |
306 | } | |
307 | ||
308 | if (!csio_is_rnode_ready(fdmi_req->rnode)) { | |
309 | CSIO_INC_STATS(ln, n_fdmi_err); | |
310 | return; | |
311 | } | |
312 | ||
313 | /* Prepare CT hdr for RPA cmd */ | |
314 | memset(cmd, 0, FC_CT_HDR_LEN); | |
5036f0a0 | 315 | csio_fill_ct_iu(cmd, FC_FST_MGMT, FC_FDMI_SUBTYPE, FC_FDMI_RPA); |
a3667aae NKI |
316 | |
317 | /* Prepare RPA payload */ | |
318 | pld = (uint8_t *)csio_ct_get_pld(cmd); | |
319 | port_name = (struct fc_fdmi_port_name *)pld; | |
320 | memcpy(&port_name->portname, csio_ln_wwpn(ln), 8); | |
321 | pld += sizeof(*port_name); | |
322 | ||
323 | /* Start appending Port attributes */ | |
324 | attrib_blk = (struct fs_fdmi_attrs *)pld; | |
325 | attrib_blk->numattrs = 0; | |
326 | len += sizeof(attrib_blk->numattrs); | |
327 | pld += sizeof(attrib_blk->numattrs); | |
328 | ||
329 | fc4_type = &buf[0]; | |
330 | memset(fc4_type, 0, FC_FDMI_PORT_ATTR_FC4TYPES_LEN); | |
331 | fc4_type[2] = 1; | |
332 | fc4_type[7] = 1; | |
333 | csio_append_attrib(&pld, FC_FDMI_PORT_ATTR_FC4TYPES, | |
334 | fc4_type, FC_FDMI_PORT_ATTR_FC4TYPES_LEN); | |
5036f0a0 | 335 | numattrs++; |
a3667aae NKI |
336 | val = htonl(FC_PORTSPEED_1GBIT | FC_PORTSPEED_10GBIT); |
337 | csio_append_attrib(&pld, FC_FDMI_PORT_ATTR_SUPPORTEDSPEED, | |
338 | (uint8_t *)&val, | |
339 | FC_FDMI_PORT_ATTR_SUPPORTEDSPEED_LEN); | |
5036f0a0 | 340 | numattrs++; |
a3667aae NKI |
341 | |
342 | if (hw->pport[ln->portid].link_speed == FW_PORT_CAP_SPEED_1G) | |
343 | val = htonl(FC_PORTSPEED_1GBIT); | |
344 | else if (hw->pport[ln->portid].link_speed == FW_PORT_CAP_SPEED_10G) | |
345 | val = htonl(FC_PORTSPEED_10GBIT); | |
346 | else | |
347 | val = htonl(CSIO_HBA_PORTSPEED_UNKNOWN); | |
348 | csio_append_attrib(&pld, FC_FDMI_PORT_ATTR_CURRENTPORTSPEED, | |
349 | (uint8_t *)&val, | |
350 | FC_FDMI_PORT_ATTR_CURRENTPORTSPEED_LEN); | |
5036f0a0 | 351 | numattrs++; |
a3667aae | 352 | |
5036f0a0 | 353 | mfs = ln->ln_sparm.csp.sp_bb_data; |
a3667aae | 354 | csio_append_attrib(&pld, FC_FDMI_PORT_ATTR_MAXFRAMESIZE, |
5036f0a0 NKI |
355 | (uint8_t *)&mfs, FC_FDMI_PORT_ATTR_MAXFRAMESIZE_LEN); |
356 | numattrs++; | |
a3667aae NKI |
357 | |
358 | strcpy(buf, "csiostor"); | |
359 | csio_append_attrib(&pld, FC_FDMI_PORT_ATTR_OSDEVICENAME, buf, | |
360 | (uint16_t)strlen(buf)); | |
5036f0a0 | 361 | numattrs++; |
a3667aae NKI |
362 | |
363 | if (!csio_hostname(buf, sizeof(buf))) { | |
364 | csio_append_attrib(&pld, FC_FDMI_PORT_ATTR_HOSTNAME, | |
365 | buf, (uint16_t)strlen(buf)); | |
5036f0a0 | 366 | numattrs++; |
a3667aae | 367 | } |
5036f0a0 | 368 | attrib_blk->numattrs = htonl(numattrs); |
a3667aae NKI |
369 | len = (uint32_t)(pld - (uint8_t *)cmd); |
370 | ||
371 | /* Submit FDMI RPA request */ | |
372 | spin_lock_irq(&hw->lock); | |
373 | if (csio_ln_mgmt_submit_req(fdmi_req, csio_ln_fdmi_done, | |
374 | FCOE_CT, &fdmi_req->dma_buf, len)) { | |
375 | CSIO_INC_STATS(ln, n_fdmi_err); | |
376 | csio_ln_dbg(ln, "Failed to issue fdmi rpa req\n"); | |
377 | } | |
378 | spin_unlock_irq(&hw->lock); | |
379 | } | |
380 | ||
381 | /* | |
382 | * csio_ln_fdmi_dprt_cbfn - DPRT completion | |
383 | * @hw: HW context | |
384 | * @fdmi_req: fdmi request | |
385 | */ | |
386 | static void | |
387 | csio_ln_fdmi_dprt_cbfn(struct csio_hw *hw, struct csio_ioreq *fdmi_req) | |
388 | { | |
389 | void *cmd; | |
390 | uint8_t *pld; | |
391 | uint32_t len = 0; | |
5036f0a0 NKI |
392 | uint32_t numattrs = 0; |
393 | __be32 maxpayload = htonl(65536); | |
a3667aae NKI |
394 | struct fc_fdmi_hba_identifier *hbaid; |
395 | struct csio_lnode *ln = fdmi_req->lnode; | |
396 | struct fc_fdmi_rpl *reg_pl; | |
397 | struct fs_fdmi_attrs *attrib_blk; | |
398 | uint8_t buf[64]; | |
399 | ||
400 | if (fdmi_req->wr_status != FW_SUCCESS) { | |
401 | csio_ln_dbg(ln, "WR error:%x in processing fdmi dprt cmd\n", | |
402 | fdmi_req->wr_status); | |
403 | CSIO_INC_STATS(ln, n_fdmi_err); | |
404 | } | |
405 | ||
406 | if (!csio_is_rnode_ready(fdmi_req->rnode)) { | |
407 | CSIO_INC_STATS(ln, n_fdmi_err); | |
408 | return; | |
409 | } | |
410 | cmd = fdmi_req->dma_buf.vaddr; | |
411 | if (ntohs(csio_ct_rsp(cmd)) != FC_FS_ACC) { | |
412 | csio_ln_dbg(ln, "fdmi dprt cmd rejected reason %x expl %x\n", | |
413 | csio_ct_reason(cmd), csio_ct_expl(cmd)); | |
414 | } | |
415 | ||
416 | /* Prepare CT hdr for RHBA cmd */ | |
417 | memset(cmd, 0, FC_CT_HDR_LEN); | |
5036f0a0 | 418 | csio_fill_ct_iu(cmd, FC_FST_MGMT, FC_FDMI_SUBTYPE, FC_FDMI_RHBA); |
a3667aae NKI |
419 | len = FC_CT_HDR_LEN; |
420 | ||
421 | /* Prepare RHBA payload */ | |
422 | pld = (uint8_t *)csio_ct_get_pld(cmd); | |
423 | hbaid = (struct fc_fdmi_hba_identifier *)pld; | |
424 | memcpy(&hbaid->id, csio_ln_wwpn(ln), 8); /* HBA identifer */ | |
425 | pld += sizeof(*hbaid); | |
426 | ||
427 | /* Register one port per hba */ | |
428 | reg_pl = (struct fc_fdmi_rpl *)pld; | |
5036f0a0 | 429 | reg_pl->numport = htonl(1); |
a3667aae NKI |
430 | memcpy(®_pl->port[0].portname, csio_ln_wwpn(ln), 8); |
431 | pld += sizeof(*reg_pl); | |
432 | ||
433 | /* Start appending HBA attributes hba */ | |
434 | attrib_blk = (struct fs_fdmi_attrs *)pld; | |
435 | attrib_blk->numattrs = 0; | |
436 | len += sizeof(attrib_blk->numattrs); | |
437 | pld += sizeof(attrib_blk->numattrs); | |
438 | ||
439 | csio_append_attrib(&pld, FC_FDMI_HBA_ATTR_NODENAME, csio_ln_wwnn(ln), | |
440 | FC_FDMI_HBA_ATTR_NODENAME_LEN); | |
5036f0a0 | 441 | numattrs++; |
a3667aae NKI |
442 | |
443 | memset(buf, 0, sizeof(buf)); | |
444 | ||
445 | strcpy(buf, "Chelsio Communications"); | |
446 | csio_append_attrib(&pld, FC_FDMI_HBA_ATTR_MANUFACTURER, buf, | |
447 | (uint16_t)strlen(buf)); | |
5036f0a0 | 448 | numattrs++; |
a3667aae NKI |
449 | csio_append_attrib(&pld, FC_FDMI_HBA_ATTR_SERIALNUMBER, |
450 | hw->vpd.sn, (uint16_t)sizeof(hw->vpd.sn)); | |
5036f0a0 | 451 | numattrs++; |
a3667aae NKI |
452 | csio_append_attrib(&pld, FC_FDMI_HBA_ATTR_MODEL, hw->vpd.id, |
453 | (uint16_t)sizeof(hw->vpd.id)); | |
5036f0a0 | 454 | numattrs++; |
a3667aae NKI |
455 | csio_append_attrib(&pld, FC_FDMI_HBA_ATTR_MODELDESCRIPTION, |
456 | hw->model_desc, (uint16_t)strlen(hw->model_desc)); | |
5036f0a0 | 457 | numattrs++; |
a3667aae NKI |
458 | csio_append_attrib(&pld, FC_FDMI_HBA_ATTR_HARDWAREVERSION, |
459 | hw->hw_ver, (uint16_t)sizeof(hw->hw_ver)); | |
5036f0a0 | 460 | numattrs++; |
a3667aae NKI |
461 | csio_append_attrib(&pld, FC_FDMI_HBA_ATTR_FIRMWAREVERSION, |
462 | hw->fwrev_str, (uint16_t)strlen(hw->fwrev_str)); | |
5036f0a0 | 463 | numattrs++; |
a3667aae NKI |
464 | |
465 | if (!csio_osname(buf, sizeof(buf))) { | |
466 | csio_append_attrib(&pld, FC_FDMI_HBA_ATTR_OSNAMEVERSION, | |
467 | buf, (uint16_t)strlen(buf)); | |
5036f0a0 | 468 | numattrs++; |
a3667aae NKI |
469 | } |
470 | ||
471 | csio_append_attrib(&pld, FC_FDMI_HBA_ATTR_MAXCTPAYLOAD, | |
472 | (uint8_t *)&maxpayload, | |
473 | FC_FDMI_HBA_ATTR_MAXCTPAYLOAD_LEN); | |
474 | len = (uint32_t)(pld - (uint8_t *)cmd); | |
5036f0a0 NKI |
475 | numattrs++; |
476 | attrib_blk->numattrs = htonl(numattrs); | |
a3667aae NKI |
477 | |
478 | /* Submit FDMI RHBA request */ | |
479 | spin_lock_irq(&hw->lock); | |
480 | if (csio_ln_mgmt_submit_req(fdmi_req, csio_ln_fdmi_rhba_cbfn, | |
481 | FCOE_CT, &fdmi_req->dma_buf, len)) { | |
482 | CSIO_INC_STATS(ln, n_fdmi_err); | |
483 | csio_ln_dbg(ln, "Failed to issue fdmi rhba req\n"); | |
484 | } | |
485 | spin_unlock_irq(&hw->lock); | |
486 | } | |
487 | ||
488 | /* | |
489 | * csio_ln_fdmi_dhba_cbfn - DHBA completion | |
490 | * @hw: HW context | |
491 | * @fdmi_req: fdmi request | |
492 | */ | |
493 | static void | |
494 | csio_ln_fdmi_dhba_cbfn(struct csio_hw *hw, struct csio_ioreq *fdmi_req) | |
495 | { | |
496 | struct csio_lnode *ln = fdmi_req->lnode; | |
497 | void *cmd; | |
498 | struct fc_fdmi_port_name *port_name; | |
499 | uint32_t len; | |
500 | ||
501 | if (fdmi_req->wr_status != FW_SUCCESS) { | |
502 | csio_ln_dbg(ln, "WR error:%x in processing fdmi dhba cmd\n", | |
503 | fdmi_req->wr_status); | |
504 | CSIO_INC_STATS(ln, n_fdmi_err); | |
505 | } | |
506 | ||
507 | if (!csio_is_rnode_ready(fdmi_req->rnode)) { | |
508 | CSIO_INC_STATS(ln, n_fdmi_err); | |
509 | return; | |
510 | } | |
511 | cmd = fdmi_req->dma_buf.vaddr; | |
512 | if (ntohs(csio_ct_rsp(cmd)) != FC_FS_ACC) { | |
513 | csio_ln_dbg(ln, "fdmi dhba cmd rejected reason %x expl %x\n", | |
514 | csio_ct_reason(cmd), csio_ct_expl(cmd)); | |
515 | } | |
516 | ||
517 | /* Send FDMI cmd to de-register any Port attributes if registered | |
518 | * before | |
519 | */ | |
520 | ||
521 | /* Prepare FDMI DPRT cmd */ | |
522 | memset(cmd, 0, FC_CT_HDR_LEN); | |
5036f0a0 | 523 | csio_fill_ct_iu(cmd, FC_FST_MGMT, FC_FDMI_SUBTYPE, FC_FDMI_DPRT); |
a3667aae NKI |
524 | len = FC_CT_HDR_LEN; |
525 | port_name = (struct fc_fdmi_port_name *)csio_ct_get_pld(cmd); | |
526 | memcpy(&port_name->portname, csio_ln_wwpn(ln), 8); | |
527 | len += sizeof(*port_name); | |
528 | ||
529 | /* Submit FDMI request */ | |
530 | spin_lock_irq(&hw->lock); | |
531 | if (csio_ln_mgmt_submit_req(fdmi_req, csio_ln_fdmi_dprt_cbfn, | |
532 | FCOE_CT, &fdmi_req->dma_buf, len)) { | |
533 | CSIO_INC_STATS(ln, n_fdmi_err); | |
534 | csio_ln_dbg(ln, "Failed to issue fdmi dprt req\n"); | |
535 | } | |
536 | spin_unlock_irq(&hw->lock); | |
537 | } | |
538 | ||
539 | /** | |
540 | * csio_ln_fdmi_start - Start an FDMI request. | |
541 | * @ln: lnode | |
542 | * @context: session context | |
543 | * | |
544 | * Issued with lock held. | |
545 | */ | |
546 | int | |
547 | csio_ln_fdmi_start(struct csio_lnode *ln, void *context) | |
548 | { | |
549 | struct csio_ioreq *fdmi_req; | |
550 | struct csio_rnode *fdmi_rn = (struct csio_rnode *)context; | |
551 | void *cmd; | |
552 | struct fc_fdmi_hba_identifier *hbaid; | |
553 | uint32_t len; | |
554 | ||
555 | if (!(ln->flags & CSIO_LNF_FDMI_ENABLE)) | |
556 | return -EPROTONOSUPPORT; | |
557 | ||
558 | if (!csio_is_rnode_ready(fdmi_rn)) | |
559 | CSIO_INC_STATS(ln, n_fdmi_err); | |
560 | ||
561 | /* Send FDMI cmd to de-register any HBA attributes if registered | |
562 | * before | |
563 | */ | |
564 | ||
565 | fdmi_req = ln->mgmt_req; | |
566 | fdmi_req->lnode = ln; | |
567 | fdmi_req->rnode = fdmi_rn; | |
568 | ||
569 | /* Prepare FDMI DHBA cmd */ | |
570 | cmd = fdmi_req->dma_buf.vaddr; | |
571 | memset(cmd, 0, FC_CT_HDR_LEN); | |
5036f0a0 | 572 | csio_fill_ct_iu(cmd, FC_FST_MGMT, FC_FDMI_SUBTYPE, FC_FDMI_DHBA); |
a3667aae NKI |
573 | len = FC_CT_HDR_LEN; |
574 | ||
575 | hbaid = (struct fc_fdmi_hba_identifier *)csio_ct_get_pld(cmd); | |
576 | memcpy(&hbaid->id, csio_ln_wwpn(ln), 8); | |
577 | len += sizeof(*hbaid); | |
578 | ||
579 | /* Submit FDMI request */ | |
580 | if (csio_ln_mgmt_submit_req(fdmi_req, csio_ln_fdmi_dhba_cbfn, | |
581 | FCOE_CT, &fdmi_req->dma_buf, len)) { | |
582 | CSIO_INC_STATS(ln, n_fdmi_err); | |
583 | csio_ln_dbg(ln, "Failed to issue fdmi dhba req\n"); | |
584 | } | |
585 | ||
586 | return 0; | |
587 | } | |
588 | ||
589 | /* | |
590 | * csio_ln_vnp_read_cbfn - vnp read completion handler. | |
591 | * @hw: HW lnode | |
592 | * @cbfn: Completion handler. | |
593 | * | |
594 | * Reads vnp response and updates ln parameters. | |
595 | */ | |
596 | static void | |
597 | csio_ln_vnp_read_cbfn(struct csio_hw *hw, struct csio_mb *mbp) | |
598 | { | |
599 | struct csio_lnode *ln = ((struct csio_lnode *)mbp->priv); | |
600 | struct fw_fcoe_vnp_cmd *rsp = (struct fw_fcoe_vnp_cmd *)(mbp->mb); | |
601 | struct fc_els_csp *csp; | |
602 | struct fc_els_cssp *clsp; | |
603 | enum fw_retval retval; | |
5036f0a0 | 604 | __be32 nport_id; |
a3667aae NKI |
605 | |
606 | retval = FW_CMD_RETVAL_GET(ntohl(rsp->alloc_to_len16)); | |
607 | if (retval != FW_SUCCESS) { | |
608 | csio_err(hw, "FCOE VNP read cmd returned error:0x%x\n", retval); | |
609 | mempool_free(mbp, hw->mb_mempool); | |
610 | return; | |
611 | } | |
612 | ||
613 | spin_lock_irq(&hw->lock); | |
614 | ||
615 | memcpy(ln->mac, rsp->vnport_mac, sizeof(ln->mac)); | |
5036f0a0 NKI |
616 | memcpy(&nport_id, &rsp->vnport_mac[3], sizeof(uint8_t)*3); |
617 | ln->nport_id = ntohl(nport_id); | |
618 | ln->nport_id = ln->nport_id >> 8; | |
a3667aae NKI |
619 | |
620 | /* Update WWNs */ | |
621 | /* | |
622 | * This may look like a duplication of what csio_fcoe_enable_link() | |
623 | * does, but is absolutely necessary if the vnpi changes between | |
624 | * a FCOE LINK UP and FCOE LINK DOWN. | |
625 | */ | |
626 | memcpy(csio_ln_wwnn(ln), rsp->vnport_wwnn, 8); | |
627 | memcpy(csio_ln_wwpn(ln), rsp->vnport_wwpn, 8); | |
628 | ||
629 | /* Copy common sparam */ | |
630 | csp = (struct fc_els_csp *)rsp->cmn_srv_parms; | |
631 | ln->ln_sparm.csp.sp_hi_ver = csp->sp_hi_ver; | |
632 | ln->ln_sparm.csp.sp_lo_ver = csp->sp_lo_ver; | |
5036f0a0 NKI |
633 | ln->ln_sparm.csp.sp_bb_cred = csp->sp_bb_cred; |
634 | ln->ln_sparm.csp.sp_features = csp->sp_features; | |
635 | ln->ln_sparm.csp.sp_bb_data = csp->sp_bb_data; | |
636 | ln->ln_sparm.csp.sp_r_a_tov = csp->sp_r_a_tov; | |
637 | ln->ln_sparm.csp.sp_e_d_tov = csp->sp_e_d_tov; | |
a3667aae NKI |
638 | |
639 | /* Copy word 0 & word 1 of class sparam */ | |
640 | clsp = (struct fc_els_cssp *)rsp->clsp_word_0_1; | |
5036f0a0 NKI |
641 | ln->ln_sparm.clsp[2].cp_class = clsp->cp_class; |
642 | ln->ln_sparm.clsp[2].cp_init = clsp->cp_init; | |
643 | ln->ln_sparm.clsp[2].cp_recip = clsp->cp_recip; | |
644 | ln->ln_sparm.clsp[2].cp_rdfs = clsp->cp_rdfs; | |
a3667aae NKI |
645 | |
646 | spin_unlock_irq(&hw->lock); | |
647 | ||
648 | mempool_free(mbp, hw->mb_mempool); | |
649 | ||
650 | /* Send an event to update local attribs */ | |
651 | csio_lnode_async_event(ln, CSIO_LN_FC_ATTRIB_UPDATE); | |
652 | } | |
653 | ||
654 | /* | |
655 | * csio_ln_vnp_read - Read vnp params. | |
656 | * @ln: lnode | |
657 | * @cbfn: Completion handler. | |
658 | * | |
659 | * Issued with lock held. | |
660 | */ | |
661 | static int | |
662 | csio_ln_vnp_read(struct csio_lnode *ln, | |
663 | void (*cbfn) (struct csio_hw *, struct csio_mb *)) | |
664 | { | |
665 | struct csio_hw *hw = ln->hwp; | |
666 | struct csio_mb *mbp; | |
667 | ||
668 | /* Allocate Mbox request */ | |
669 | mbp = mempool_alloc(hw->mb_mempool, GFP_ATOMIC); | |
670 | if (!mbp) { | |
671 | CSIO_INC_STATS(hw, n_err_nomem); | |
672 | return -ENOMEM; | |
673 | } | |
674 | ||
675 | /* Prepare VNP Command */ | |
676 | csio_fcoe_vnp_read_init_mb(ln, mbp, | |
677 | CSIO_MB_DEFAULT_TMO, | |
678 | ln->fcf_flowid, | |
679 | ln->vnp_flowid, | |
680 | cbfn); | |
681 | ||
682 | /* Issue MBOX cmd */ | |
683 | if (csio_mb_issue(hw, mbp)) { | |
684 | csio_err(hw, "Failed to issue mbox FCoE VNP command\n"); | |
685 | mempool_free(mbp, hw->mb_mempool); | |
686 | return -EINVAL; | |
687 | } | |
688 | ||
689 | return 0; | |
690 | } | |
691 | ||
692 | /* | |
693 | * csio_fcoe_enable_link - Enable fcoe link. | |
694 | * @ln: lnode | |
695 | * @enable: enable/disable | |
696 | * Issued with lock held. | |
697 | * Issues mbox cmd to bring up FCOE link on port associated with given ln. | |
698 | */ | |
699 | static int | |
700 | csio_fcoe_enable_link(struct csio_lnode *ln, bool enable) | |
701 | { | |
702 | struct csio_hw *hw = ln->hwp; | |
703 | struct csio_mb *mbp; | |
704 | enum fw_retval retval; | |
705 | uint8_t portid; | |
706 | uint8_t sub_op; | |
707 | struct fw_fcoe_link_cmd *lcmd; | |
708 | int i; | |
709 | ||
710 | mbp = mempool_alloc(hw->mb_mempool, GFP_ATOMIC); | |
711 | if (!mbp) { | |
712 | CSIO_INC_STATS(hw, n_err_nomem); | |
713 | return -ENOMEM; | |
714 | } | |
715 | ||
716 | portid = ln->portid; | |
717 | sub_op = enable ? FCOE_LINK_UP : FCOE_LINK_DOWN; | |
718 | ||
719 | csio_dbg(hw, "bringing FCOE LINK %s on Port:%d\n", | |
720 | sub_op ? "UP" : "DOWN", portid); | |
721 | ||
722 | csio_write_fcoe_link_cond_init_mb(ln, mbp, CSIO_MB_DEFAULT_TMO, | |
723 | portid, sub_op, 0, 0, 0, NULL); | |
724 | ||
725 | if (csio_mb_issue(hw, mbp)) { | |
726 | csio_err(hw, "failed to issue FCOE LINK cmd on port[%d]\n", | |
727 | portid); | |
728 | mempool_free(mbp, hw->mb_mempool); | |
729 | return -EINVAL; | |
730 | } | |
731 | ||
732 | retval = csio_mb_fw_retval(mbp); | |
733 | if (retval != FW_SUCCESS) { | |
734 | csio_err(hw, | |
735 | "FCOE LINK %s cmd on port[%d] failed with " | |
736 | "ret:x%x\n", sub_op ? "UP" : "DOWN", portid, retval); | |
737 | mempool_free(mbp, hw->mb_mempool); | |
738 | return -EINVAL; | |
739 | } | |
740 | ||
741 | if (!enable) | |
742 | goto out; | |
743 | ||
744 | lcmd = (struct fw_fcoe_link_cmd *)mbp->mb; | |
745 | ||
746 | memcpy(csio_ln_wwnn(ln), lcmd->vnport_wwnn, 8); | |
747 | memcpy(csio_ln_wwpn(ln), lcmd->vnport_wwpn, 8); | |
748 | ||
749 | for (i = 0; i < CSIO_MAX_PPORTS; i++) | |
750 | if (hw->pport[i].portid == portid) | |
751 | memcpy(hw->pport[i].mac, lcmd->phy_mac, 6); | |
752 | ||
753 | out: | |
754 | mempool_free(mbp, hw->mb_mempool); | |
755 | return 0; | |
756 | } | |
757 | ||
758 | /* | |
759 | * csio_ln_read_fcf_cbfn - Read fcf parameters | |
760 | * @ln: lnode | |
761 | * | |
762 | * read fcf response and Update ln fcf information. | |
763 | */ | |
764 | static void | |
765 | csio_ln_read_fcf_cbfn(struct csio_hw *hw, struct csio_mb *mbp) | |
766 | { | |
767 | struct csio_lnode *ln = (struct csio_lnode *)mbp->priv; | |
768 | struct csio_fcf_info *fcf_info; | |
769 | struct fw_fcoe_fcf_cmd *rsp = | |
770 | (struct fw_fcoe_fcf_cmd *)(mbp->mb); | |
771 | enum fw_retval retval; | |
772 | ||
773 | retval = FW_CMD_RETVAL_GET(ntohl(rsp->retval_len16)); | |
774 | if (retval != FW_SUCCESS) { | |
775 | csio_ln_err(ln, "FCOE FCF cmd failed with ret x%x\n", | |
776 | retval); | |
777 | mempool_free(mbp, hw->mb_mempool); | |
778 | return; | |
779 | } | |
780 | ||
781 | spin_lock_irq(&hw->lock); | |
782 | fcf_info = ln->fcfinfo; | |
783 | fcf_info->priority = FW_FCOE_FCF_CMD_PRIORITY_GET( | |
784 | ntohs(rsp->priority_pkd)); | |
785 | fcf_info->vf_id = ntohs(rsp->vf_id); | |
786 | fcf_info->vlan_id = rsp->vlan_id; | |
787 | fcf_info->max_fcoe_size = ntohs(rsp->max_fcoe_size); | |
788 | fcf_info->fka_adv = be32_to_cpu(rsp->fka_adv); | |
789 | fcf_info->fcfi = FW_FCOE_FCF_CMD_FCFI_GET(ntohl(rsp->op_to_fcfi)); | |
790 | fcf_info->fpma = FW_FCOE_FCF_CMD_FPMA_GET(rsp->fpma_to_portid); | |
791 | fcf_info->spma = FW_FCOE_FCF_CMD_SPMA_GET(rsp->fpma_to_portid); | |
792 | fcf_info->login = FW_FCOE_FCF_CMD_LOGIN_GET(rsp->fpma_to_portid); | |
793 | fcf_info->portid = FW_FCOE_FCF_CMD_PORTID_GET(rsp->fpma_to_portid); | |
794 | memcpy(fcf_info->fc_map, rsp->fc_map, sizeof(fcf_info->fc_map)); | |
795 | memcpy(fcf_info->mac, rsp->mac, sizeof(fcf_info->mac)); | |
796 | memcpy(fcf_info->name_id, rsp->name_id, sizeof(fcf_info->name_id)); | |
797 | memcpy(fcf_info->fabric, rsp->fabric, sizeof(fcf_info->fabric)); | |
798 | memcpy(fcf_info->spma_mac, rsp->spma_mac, sizeof(fcf_info->spma_mac)); | |
799 | ||
800 | spin_unlock_irq(&hw->lock); | |
801 | ||
802 | mempool_free(mbp, hw->mb_mempool); | |
803 | } | |
804 | ||
805 | /* | |
806 | * csio_ln_read_fcf_entry - Read fcf entry. | |
807 | * @ln: lnode | |
808 | * @cbfn: Completion handler. | |
809 | * | |
810 | * Issued with lock held. | |
811 | */ | |
812 | static int | |
813 | csio_ln_read_fcf_entry(struct csio_lnode *ln, | |
814 | void (*cbfn) (struct csio_hw *, struct csio_mb *)) | |
815 | { | |
816 | struct csio_hw *hw = ln->hwp; | |
817 | struct csio_mb *mbp; | |
818 | ||
819 | mbp = mempool_alloc(hw->mb_mempool, GFP_ATOMIC); | |
820 | if (!mbp) { | |
821 | CSIO_INC_STATS(hw, n_err_nomem); | |
822 | return -ENOMEM; | |
823 | } | |
824 | ||
825 | /* Get FCoE FCF information */ | |
826 | csio_fcoe_read_fcf_init_mb(ln, mbp, CSIO_MB_DEFAULT_TMO, | |
827 | ln->portid, ln->fcf_flowid, cbfn); | |
828 | ||
829 | if (csio_mb_issue(hw, mbp)) { | |
830 | csio_err(hw, "failed to issue FCOE FCF cmd\n"); | |
831 | mempool_free(mbp, hw->mb_mempool); | |
832 | return -EINVAL; | |
833 | } | |
834 | ||
835 | return 0; | |
836 | } | |
837 | ||
838 | /* | |
839 | * csio_handle_link_up - Logical Linkup event. | |
840 | * @hw - HW module. | |
841 | * @portid - Physical port number | |
842 | * @fcfi - FCF index. | |
843 | * @vnpi - VNP index. | |
844 | * Returns - none. | |
845 | * | |
846 | * This event is received from FW, when virtual link is established between | |
847 | * Physical port[ENode] and FCF. If its new vnpi, then local node object is | |
848 | * created on this FCF and set to [ONLINE] state. | |
849 | * Lnode waits for FW_RDEV_CMD event to be received indicating that | |
850 | * Fabric login is completed and lnode moves to [READY] state. | |
851 | * | |
852 | * This called with hw lock held | |
853 | */ | |
854 | static void | |
855 | csio_handle_link_up(struct csio_hw *hw, uint8_t portid, uint32_t fcfi, | |
856 | uint32_t vnpi) | |
857 | { | |
858 | struct csio_lnode *ln = NULL; | |
859 | ||
860 | /* Lookup lnode based on vnpi */ | |
861 | ln = csio_ln_lookup_by_vnpi(hw, vnpi); | |
862 | if (!ln) { | |
863 | /* Pick lnode based on portid */ | |
864 | ln = csio_ln_lookup_by_portid(hw, portid); | |
865 | if (!ln) { | |
866 | csio_err(hw, "failed to lookup fcoe lnode on port:%d\n", | |
867 | portid); | |
868 | CSIO_DB_ASSERT(0); | |
869 | return; | |
870 | } | |
871 | ||
872 | /* Check if lnode has valid vnp flowid */ | |
873 | if (ln->vnp_flowid != CSIO_INVALID_IDX) { | |
874 | /* New VN-Port */ | |
875 | spin_unlock_irq(&hw->lock); | |
876 | csio_lnode_alloc(hw); | |
877 | spin_lock_irq(&hw->lock); | |
878 | if (!ln) { | |
879 | csio_err(hw, | |
880 | "failed to allocate fcoe lnode" | |
881 | "for port:%d vnpi:x%x\n", | |
882 | portid, vnpi); | |
883 | CSIO_DB_ASSERT(0); | |
884 | return; | |
885 | } | |
886 | ln->portid = portid; | |
887 | } | |
888 | ln->vnp_flowid = vnpi; | |
889 | ln->dev_num &= ~0xFFFF; | |
890 | ln->dev_num |= vnpi; | |
891 | } | |
892 | ||
893 | /*Initialize fcfi */ | |
894 | ln->fcf_flowid = fcfi; | |
895 | ||
896 | csio_info(hw, "Port:%d - FCOE LINK UP\n", portid); | |
897 | ||
898 | CSIO_INC_STATS(ln, n_link_up); | |
899 | ||
900 | /* Send LINKUP event to SM */ | |
901 | csio_post_event(&ln->sm, CSIO_LNE_LINKUP); | |
902 | } | |
903 | ||
904 | /* | |
905 | * csio_post_event_rns | |
906 | * @ln - FCOE lnode | |
907 | * @evt - Given rnode event | |
908 | * Returns - none | |
909 | * | |
910 | * Posts given rnode event to all FCOE rnodes connected with given Lnode. | |
911 | * This routine is invoked when lnode receives LINK_DOWN/DOWN_LINK/CLOSE | |
912 | * event. | |
913 | * | |
914 | * This called with hw lock held | |
915 | */ | |
916 | static void | |
917 | csio_post_event_rns(struct csio_lnode *ln, enum csio_rn_ev evt) | |
918 | { | |
919 | struct csio_rnode *rnhead = (struct csio_rnode *) &ln->rnhead; | |
920 | struct list_head *tmp, *next; | |
921 | struct csio_rnode *rn; | |
922 | ||
923 | list_for_each_safe(tmp, next, &rnhead->sm.sm_list) { | |
924 | rn = (struct csio_rnode *) tmp; | |
925 | csio_post_event(&rn->sm, evt); | |
926 | } | |
927 | } | |
928 | ||
929 | /* | |
930 | * csio_cleanup_rns | |
931 | * @ln - FCOE lnode | |
932 | * Returns - none | |
933 | * | |
934 | * Frees all FCOE rnodes connected with given Lnode. | |
935 | * | |
936 | * This called with hw lock held | |
937 | */ | |
938 | static void | |
939 | csio_cleanup_rns(struct csio_lnode *ln) | |
940 | { | |
941 | struct csio_rnode *rnhead = (struct csio_rnode *) &ln->rnhead; | |
942 | struct list_head *tmp, *next_rn; | |
943 | struct csio_rnode *rn; | |
944 | ||
945 | list_for_each_safe(tmp, next_rn, &rnhead->sm.sm_list) { | |
946 | rn = (struct csio_rnode *) tmp; | |
947 | csio_put_rnode(ln, rn); | |
948 | } | |
949 | ||
950 | } | |
951 | ||
952 | /* | |
953 | * csio_post_event_lns | |
954 | * @ln - FCOE lnode | |
955 | * @evt - Given lnode event | |
956 | * Returns - none | |
957 | * | |
958 | * Posts given lnode event to all FCOE lnodes connected with given Lnode. | |
959 | * This routine is invoked when lnode receives LINK_DOWN/DOWN_LINK/CLOSE | |
960 | * event. | |
961 | * | |
962 | * This called with hw lock held | |
963 | */ | |
964 | static void | |
965 | csio_post_event_lns(struct csio_lnode *ln, enum csio_ln_ev evt) | |
966 | { | |
967 | struct list_head *tmp; | |
968 | struct csio_lnode *cln, *sln; | |
969 | ||
970 | /* If NPIV lnode, send evt only to that and return */ | |
971 | if (csio_is_npiv_ln(ln)) { | |
972 | csio_post_event(&ln->sm, evt); | |
973 | return; | |
974 | } | |
975 | ||
976 | sln = ln; | |
977 | /* Traverse children lnodes list and send evt */ | |
978 | list_for_each(tmp, &sln->cln_head) { | |
979 | cln = (struct csio_lnode *) tmp; | |
980 | csio_post_event(&cln->sm, evt); | |
981 | } | |
982 | ||
983 | /* Send evt to parent lnode */ | |
984 | csio_post_event(&ln->sm, evt); | |
985 | } | |
986 | ||
987 | /* | |
988 | * csio_ln_down - Lcoal nport is down | |
989 | * @ln - FCOE Lnode | |
990 | * Returns - none | |
991 | * | |
992 | * Sends LINK_DOWN events to Lnode and its associated NPIVs lnodes. | |
993 | * | |
994 | * This called with hw lock held | |
995 | */ | |
996 | static void | |
997 | csio_ln_down(struct csio_lnode *ln) | |
998 | { | |
999 | csio_post_event_lns(ln, CSIO_LNE_LINK_DOWN); | |
1000 | } | |
1001 | ||
1002 | /* | |
1003 | * csio_handle_link_down - Logical Linkdown event. | |
1004 | * @hw - HW module. | |
1005 | * @portid - Physical port number | |
1006 | * @fcfi - FCF index. | |
1007 | * @vnpi - VNP index. | |
1008 | * Returns - none | |
1009 | * | |
1010 | * This event is received from FW, when virtual link goes down between | |
1011 | * Physical port[ENode] and FCF. Lnode and its associated NPIVs lnode hosted on | |
1012 | * this vnpi[VN-Port] will be de-instantiated. | |
1013 | * | |
1014 | * This called with hw lock held | |
1015 | */ | |
1016 | static void | |
1017 | csio_handle_link_down(struct csio_hw *hw, uint8_t portid, uint32_t fcfi, | |
1018 | uint32_t vnpi) | |
1019 | { | |
1020 | struct csio_fcf_info *fp; | |
1021 | struct csio_lnode *ln; | |
1022 | ||
1023 | /* Lookup lnode based on vnpi */ | |
1024 | ln = csio_ln_lookup_by_vnpi(hw, vnpi); | |
1025 | if (ln) { | |
1026 | fp = ln->fcfinfo; | |
1027 | CSIO_INC_STATS(ln, n_link_down); | |
1028 | ||
1029 | /*Warn if linkdown received if lnode is not in ready state */ | |
1030 | if (!csio_is_lnode_ready(ln)) { | |
1031 | csio_ln_warn(ln, | |
1032 | "warn: FCOE link is already in offline " | |
1033 | "Ignoring Fcoe linkdown event on portid %d\n", | |
1034 | portid); | |
1035 | CSIO_INC_STATS(ln, n_evt_drop); | |
1036 | return; | |
1037 | } | |
1038 | ||
1039 | /* Verify portid */ | |
1040 | if (fp->portid != portid) { | |
1041 | csio_ln_warn(ln, | |
1042 | "warn: FCOE linkdown recv with " | |
1043 | "invalid port %d\n", portid); | |
1044 | CSIO_INC_STATS(ln, n_evt_drop); | |
1045 | return; | |
1046 | } | |
1047 | ||
1048 | /* verify fcfi */ | |
1049 | if (ln->fcf_flowid != fcfi) { | |
1050 | csio_ln_warn(ln, | |
1051 | "warn: FCOE linkdown recv with " | |
1052 | "invalid fcfi x%x\n", fcfi); | |
1053 | CSIO_INC_STATS(ln, n_evt_drop); | |
1054 | return; | |
1055 | } | |
1056 | ||
1057 | csio_info(hw, "Port:%d - FCOE LINK DOWN\n", portid); | |
1058 | ||
1059 | /* Send LINK_DOWN event to lnode s/m */ | |
1060 | csio_ln_down(ln); | |
1061 | ||
1062 | return; | |
1063 | } else { | |
1064 | csio_warn(hw, | |
1065 | "warn: FCOE linkdown recv with invalid vnpi x%x\n", | |
1066 | vnpi); | |
1067 | CSIO_INC_STATS(hw, n_evt_drop); | |
1068 | } | |
1069 | } | |
1070 | ||
1071 | /* | |
1072 | * csio_is_lnode_ready - Checks FCOE lnode is in ready state. | |
1073 | * @ln: Lnode module | |
1074 | * | |
1075 | * Returns True if FCOE lnode is in ready state. | |
1076 | */ | |
1077 | int | |
1078 | csio_is_lnode_ready(struct csio_lnode *ln) | |
1079 | { | |
1080 | return (csio_get_state(ln) == ((csio_sm_state_t)csio_lns_ready)); | |
1081 | } | |
1082 | ||
1083 | /*****************************************************************************/ | |
1084 | /* START: Lnode SM */ | |
1085 | /*****************************************************************************/ | |
1086 | /* | |
1087 | * csio_lns_uninit - The request in uninit state. | |
1088 | * @ln - FCOE lnode. | |
1089 | * @evt - Event to be processed. | |
1090 | * | |
1091 | * Process the given lnode event which is currently in "uninit" state. | |
1092 | * Invoked with HW lock held. | |
1093 | * Return - none. | |
1094 | */ | |
1095 | static void | |
1096 | csio_lns_uninit(struct csio_lnode *ln, enum csio_ln_ev evt) | |
1097 | { | |
1098 | struct csio_hw *hw = csio_lnode_to_hw(ln); | |
1099 | struct csio_lnode *rln = hw->rln; | |
1100 | int rv; | |
1101 | ||
1102 | CSIO_INC_STATS(ln, n_evt_sm[evt]); | |
1103 | switch (evt) { | |
1104 | case CSIO_LNE_LINKUP: | |
1105 | csio_set_state(&ln->sm, csio_lns_online); | |
1106 | /* Read FCF only for physical lnode */ | |
1107 | if (csio_is_phys_ln(ln)) { | |
1108 | rv = csio_ln_read_fcf_entry(ln, | |
1109 | csio_ln_read_fcf_cbfn); | |
1110 | if (rv != 0) { | |
1111 | /* TODO: Send HW RESET event */ | |
1112 | CSIO_INC_STATS(ln, n_err); | |
1113 | break; | |
1114 | } | |
1115 | ||
1116 | /* Add FCF record */ | |
1117 | list_add_tail(&ln->fcfinfo->list, &rln->fcf_lsthead); | |
1118 | } | |
1119 | ||
1120 | rv = csio_ln_vnp_read(ln, csio_ln_vnp_read_cbfn); | |
1121 | if (rv != 0) { | |
1122 | /* TODO: Send HW RESET event */ | |
1123 | CSIO_INC_STATS(ln, n_err); | |
1124 | } | |
1125 | break; | |
1126 | ||
1127 | case CSIO_LNE_DOWN_LINK: | |
1128 | break; | |
1129 | ||
1130 | default: | |
1131 | csio_ln_dbg(ln, | |
1132 | "unexp ln event %d recv from did:x%x in " | |
1133 | "ln state[uninit].\n", evt, ln->nport_id); | |
1134 | CSIO_INC_STATS(ln, n_evt_unexp); | |
1135 | break; | |
1136 | } /* switch event */ | |
1137 | } | |
1138 | ||
1139 | /* | |
1140 | * csio_lns_online - The request in online state. | |
1141 | * @ln - FCOE lnode. | |
1142 | * @evt - Event to be processed. | |
1143 | * | |
1144 | * Process the given lnode event which is currently in "online" state. | |
1145 | * Invoked with HW lock held. | |
1146 | * Return - none. | |
1147 | */ | |
1148 | static void | |
1149 | csio_lns_online(struct csio_lnode *ln, enum csio_ln_ev evt) | |
1150 | { | |
1151 | struct csio_hw *hw = csio_lnode_to_hw(ln); | |
1152 | ||
1153 | CSIO_INC_STATS(ln, n_evt_sm[evt]); | |
1154 | switch (evt) { | |
1155 | case CSIO_LNE_LINKUP: | |
1156 | csio_ln_warn(ln, | |
1157 | "warn: FCOE link is up already " | |
1158 | "Ignoring linkup on port:%d\n", ln->portid); | |
1159 | CSIO_INC_STATS(ln, n_evt_drop); | |
1160 | break; | |
1161 | ||
1162 | case CSIO_LNE_FAB_INIT_DONE: | |
1163 | csio_set_state(&ln->sm, csio_lns_ready); | |
1164 | ||
1165 | spin_unlock_irq(&hw->lock); | |
1166 | csio_lnode_async_event(ln, CSIO_LN_FC_LINKUP); | |
1167 | spin_lock_irq(&hw->lock); | |
1168 | ||
1169 | break; | |
1170 | ||
1171 | case CSIO_LNE_LINK_DOWN: | |
1172 | /* Fall through */ | |
1173 | case CSIO_LNE_DOWN_LINK: | |
1174 | csio_set_state(&ln->sm, csio_lns_uninit); | |
1175 | if (csio_is_phys_ln(ln)) { | |
1176 | /* Remove FCF entry */ | |
1177 | list_del_init(&ln->fcfinfo->list); | |
1178 | } | |
1179 | break; | |
1180 | ||
1181 | default: | |
1182 | csio_ln_dbg(ln, | |
1183 | "unexp ln event %d recv from did:x%x in " | |
1184 | "ln state[uninit].\n", evt, ln->nport_id); | |
1185 | CSIO_INC_STATS(ln, n_evt_unexp); | |
1186 | ||
1187 | break; | |
1188 | } /* switch event */ | |
1189 | } | |
1190 | ||
1191 | /* | |
1192 | * csio_lns_ready - The request in ready state. | |
1193 | * @ln - FCOE lnode. | |
1194 | * @evt - Event to be processed. | |
1195 | * | |
1196 | * Process the given lnode event which is currently in "ready" state. | |
1197 | * Invoked with HW lock held. | |
1198 | * Return - none. | |
1199 | */ | |
1200 | static void | |
1201 | csio_lns_ready(struct csio_lnode *ln, enum csio_ln_ev evt) | |
1202 | { | |
1203 | struct csio_hw *hw = csio_lnode_to_hw(ln); | |
1204 | ||
1205 | CSIO_INC_STATS(ln, n_evt_sm[evt]); | |
1206 | switch (evt) { | |
1207 | case CSIO_LNE_FAB_INIT_DONE: | |
1208 | csio_ln_dbg(ln, | |
1209 | "ignoring event %d recv from did x%x" | |
1210 | "in ln state[ready].\n", evt, ln->nport_id); | |
1211 | CSIO_INC_STATS(ln, n_evt_drop); | |
1212 | break; | |
1213 | ||
1214 | case CSIO_LNE_LINK_DOWN: | |
1215 | csio_set_state(&ln->sm, csio_lns_offline); | |
1216 | csio_post_event_rns(ln, CSIO_RNFE_DOWN); | |
1217 | ||
1218 | spin_unlock_irq(&hw->lock); | |
1219 | csio_lnode_async_event(ln, CSIO_LN_FC_LINKDOWN); | |
1220 | spin_lock_irq(&hw->lock); | |
1221 | ||
1222 | if (csio_is_phys_ln(ln)) { | |
1223 | /* Remove FCF entry */ | |
1224 | list_del_init(&ln->fcfinfo->list); | |
1225 | } | |
1226 | break; | |
1227 | ||
1228 | case CSIO_LNE_DOWN_LINK: | |
1229 | csio_set_state(&ln->sm, csio_lns_offline); | |
1230 | csio_post_event_rns(ln, CSIO_RNFE_DOWN); | |
1231 | ||
1232 | /* Host need to issue aborts in case if FW has not returned | |
1233 | * WRs with status "ABORTED" | |
1234 | */ | |
1235 | spin_unlock_irq(&hw->lock); | |
1236 | csio_lnode_async_event(ln, CSIO_LN_FC_LINKDOWN); | |
1237 | spin_lock_irq(&hw->lock); | |
1238 | ||
1239 | if (csio_is_phys_ln(ln)) { | |
1240 | /* Remove FCF entry */ | |
1241 | list_del_init(&ln->fcfinfo->list); | |
1242 | } | |
1243 | break; | |
1244 | ||
1245 | case CSIO_LNE_CLOSE: | |
1246 | csio_set_state(&ln->sm, csio_lns_uninit); | |
1247 | csio_post_event_rns(ln, CSIO_RNFE_CLOSE); | |
1248 | break; | |
1249 | ||
1250 | case CSIO_LNE_LOGO: | |
1251 | csio_set_state(&ln->sm, csio_lns_offline); | |
1252 | csio_post_event_rns(ln, CSIO_RNFE_DOWN); | |
1253 | break; | |
1254 | ||
1255 | default: | |
1256 | csio_ln_dbg(ln, | |
1257 | "unexp ln event %d recv from did:x%x in " | |
1258 | "ln state[uninit].\n", evt, ln->nport_id); | |
1259 | CSIO_INC_STATS(ln, n_evt_unexp); | |
1260 | CSIO_DB_ASSERT(0); | |
1261 | break; | |
1262 | } /* switch event */ | |
1263 | } | |
1264 | ||
1265 | /* | |
1266 | * csio_lns_offline - The request in offline state. | |
1267 | * @ln - FCOE lnode. | |
1268 | * @evt - Event to be processed. | |
1269 | * | |
1270 | * Process the given lnode event which is currently in "offline" state. | |
1271 | * Invoked with HW lock held. | |
1272 | * Return - none. | |
1273 | */ | |
1274 | static void | |
1275 | csio_lns_offline(struct csio_lnode *ln, enum csio_ln_ev evt) | |
1276 | { | |
1277 | struct csio_hw *hw = csio_lnode_to_hw(ln); | |
1278 | struct csio_lnode *rln = hw->rln; | |
1279 | int rv; | |
1280 | ||
1281 | CSIO_INC_STATS(ln, n_evt_sm[evt]); | |
1282 | switch (evt) { | |
1283 | case CSIO_LNE_LINKUP: | |
1284 | csio_set_state(&ln->sm, csio_lns_online); | |
1285 | /* Read FCF only for physical lnode */ | |
1286 | if (csio_is_phys_ln(ln)) { | |
1287 | rv = csio_ln_read_fcf_entry(ln, | |
1288 | csio_ln_read_fcf_cbfn); | |
1289 | if (rv != 0) { | |
1290 | /* TODO: Send HW RESET event */ | |
1291 | CSIO_INC_STATS(ln, n_err); | |
1292 | break; | |
1293 | } | |
1294 | ||
1295 | /* Add FCF record */ | |
1296 | list_add_tail(&ln->fcfinfo->list, &rln->fcf_lsthead); | |
1297 | } | |
1298 | ||
1299 | rv = csio_ln_vnp_read(ln, csio_ln_vnp_read_cbfn); | |
1300 | if (rv != 0) { | |
1301 | /* TODO: Send HW RESET event */ | |
1302 | CSIO_INC_STATS(ln, n_err); | |
1303 | } | |
1304 | break; | |
1305 | ||
1306 | case CSIO_LNE_LINK_DOWN: | |
1307 | case CSIO_LNE_DOWN_LINK: | |
1308 | case CSIO_LNE_LOGO: | |
1309 | csio_ln_dbg(ln, | |
1310 | "ignoring event %d recv from did x%x" | |
1311 | "in ln state[offline].\n", evt, ln->nport_id); | |
1312 | CSIO_INC_STATS(ln, n_evt_drop); | |
1313 | break; | |
1314 | ||
1315 | case CSIO_LNE_CLOSE: | |
1316 | csio_set_state(&ln->sm, csio_lns_uninit); | |
1317 | csio_post_event_rns(ln, CSIO_RNFE_CLOSE); | |
1318 | break; | |
1319 | ||
1320 | default: | |
1321 | csio_ln_dbg(ln, | |
1322 | "unexp ln event %d recv from did:x%x in " | |
1323 | "ln state[offline]\n", evt, ln->nport_id); | |
1324 | CSIO_INC_STATS(ln, n_evt_unexp); | |
1325 | CSIO_DB_ASSERT(0); | |
1326 | break; | |
1327 | } /* switch event */ | |
1328 | } | |
1329 | ||
1330 | /*****************************************************************************/ | |
1331 | /* END: Lnode SM */ | |
1332 | /*****************************************************************************/ | |
1333 | ||
1334 | static void | |
1335 | csio_free_fcfinfo(struct kref *kref) | |
1336 | { | |
1337 | struct csio_fcf_info *fcfinfo = container_of(kref, | |
1338 | struct csio_fcf_info, kref); | |
1339 | kfree(fcfinfo); | |
1340 | } | |
1341 | ||
1342 | /* Helper routines for attributes */ | |
1343 | /* | |
1344 | * csio_lnode_state_to_str - Get current state of FCOE lnode. | |
1345 | * @ln - lnode | |
1346 | * @str - state of lnode. | |
1347 | * | |
1348 | */ | |
1349 | void | |
1350 | csio_lnode_state_to_str(struct csio_lnode *ln, int8_t *str) | |
1351 | { | |
1352 | if (csio_get_state(ln) == ((csio_sm_state_t)csio_lns_uninit)) { | |
1353 | strcpy(str, "UNINIT"); | |
1354 | return; | |
1355 | } | |
1356 | if (csio_get_state(ln) == ((csio_sm_state_t)csio_lns_ready)) { | |
1357 | strcpy(str, "READY"); | |
1358 | return; | |
1359 | } | |
1360 | if (csio_get_state(ln) == ((csio_sm_state_t)csio_lns_offline)) { | |
1361 | strcpy(str, "OFFLINE"); | |
1362 | return; | |
1363 | } | |
1364 | strcpy(str, "UNKNOWN"); | |
1365 | } /* csio_lnode_state_to_str */ | |
1366 | ||
1367 | ||
1368 | int | |
1369 | csio_get_phy_port_stats(struct csio_hw *hw, uint8_t portid, | |
1370 | struct fw_fcoe_port_stats *port_stats) | |
1371 | { | |
1372 | struct csio_mb *mbp; | |
1373 | struct fw_fcoe_port_cmd_params portparams; | |
1374 | enum fw_retval retval; | |
1375 | int idx; | |
1376 | ||
1377 | mbp = mempool_alloc(hw->mb_mempool, GFP_ATOMIC); | |
1378 | if (!mbp) { | |
1379 | csio_err(hw, "FCoE FCF PARAMS command out of memory!\n"); | |
1380 | return -EINVAL; | |
1381 | } | |
1382 | portparams.portid = portid; | |
1383 | ||
1384 | for (idx = 1; idx <= 3; idx++) { | |
1385 | portparams.idx = (idx-1)*6 + 1; | |
1386 | portparams.nstats = 6; | |
1387 | if (idx == 3) | |
1388 | portparams.nstats = 4; | |
1389 | csio_fcoe_read_portparams_init_mb(hw, mbp, CSIO_MB_DEFAULT_TMO, | |
1390 | &portparams, NULL); | |
1391 | if (csio_mb_issue(hw, mbp)) { | |
1392 | csio_err(hw, "Issue of FCoE port params failed!\n"); | |
1393 | mempool_free(mbp, hw->mb_mempool); | |
1394 | return -EINVAL; | |
1395 | } | |
1396 | csio_mb_process_portparams_rsp(hw, mbp, &retval, | |
1397 | &portparams, port_stats); | |
1398 | } | |
1399 | ||
1400 | mempool_free(mbp, hw->mb_mempool); | |
1401 | return 0; | |
1402 | } | |
1403 | ||
1404 | /* | |
1405 | * csio_ln_mgmt_wr_handler -Mgmt Work Request handler. | |
1406 | * @wr - WR. | |
1407 | * @len - WR len. | |
1408 | * This handler is invoked when an outstanding mgmt WR is completed. | |
1409 | * Its invoked in the context of FW event worker thread for every | |
1410 | * mgmt event received. | |
1411 | * Return - none. | |
1412 | */ | |
1413 | ||
1414 | static void | |
1415 | csio_ln_mgmt_wr_handler(struct csio_hw *hw, void *wr, uint32_t len) | |
1416 | { | |
1417 | struct csio_mgmtm *mgmtm = csio_hw_to_mgmtm(hw); | |
1418 | struct csio_ioreq *io_req = NULL; | |
1419 | struct fw_fcoe_els_ct_wr *wr_cmd; | |
1420 | ||
1421 | ||
1422 | wr_cmd = (struct fw_fcoe_els_ct_wr *) wr; | |
1423 | ||
1424 | if (len < sizeof(struct fw_fcoe_els_ct_wr)) { | |
1425 | csio_err(mgmtm->hw, | |
1426 | "Invalid ELS CT WR length recvd, len:%x\n", len); | |
1427 | mgmtm->stats.n_err++; | |
1428 | return; | |
1429 | } | |
1430 | ||
1431 | io_req = (struct csio_ioreq *) ((uintptr_t) wr_cmd->cookie); | |
1432 | io_req->wr_status = csio_wr_status(wr_cmd); | |
1433 | ||
1434 | /* lookup ioreq exists in our active Q */ | |
1435 | spin_lock_irq(&hw->lock); | |
1436 | if (csio_mgmt_req_lookup(mgmtm, io_req) != 0) { | |
1437 | csio_err(mgmtm->hw, | |
1438 | "Error- Invalid IO handle recv in WR. handle: %p\n", | |
1439 | io_req); | |
1440 | mgmtm->stats.n_err++; | |
1441 | spin_unlock_irq(&hw->lock); | |
1442 | return; | |
1443 | } | |
1444 | ||
1445 | mgmtm = csio_hw_to_mgmtm(hw); | |
1446 | ||
1447 | /* Dequeue from active queue */ | |
1448 | list_del_init(&io_req->sm.sm_list); | |
1449 | mgmtm->stats.n_active--; | |
1450 | spin_unlock_irq(&hw->lock); | |
1451 | ||
1452 | /* io_req will be freed by completion handler */ | |
1453 | if (io_req->io_cbfn) | |
1454 | io_req->io_cbfn(hw, io_req); | |
1455 | } | |
1456 | ||
1457 | /** | |
1458 | * csio_fcoe_fwevt_handler - Event handler for Firmware FCoE events. | |
1459 | * @hw: HW module | |
1460 | * @cpl_op: CPL opcode | |
1461 | * @cmd: FW cmd/WR. | |
1462 | * | |
1463 | * Process received FCoE cmd/WR event from FW. | |
1464 | */ | |
1465 | void | |
1466 | csio_fcoe_fwevt_handler(struct csio_hw *hw, __u8 cpl_op, __be64 *cmd) | |
1467 | { | |
1468 | struct csio_lnode *ln; | |
1469 | struct csio_rnode *rn; | |
1470 | uint8_t portid, opcode = *(uint8_t *)cmd; | |
1471 | struct fw_fcoe_link_cmd *lcmd; | |
1472 | struct fw_wr_hdr *wr; | |
1473 | struct fw_rdev_wr *rdev_wr; | |
1474 | enum fw_fcoe_link_status lstatus; | |
1475 | uint32_t fcfi, rdev_flowid, vnpi; | |
1476 | enum csio_ln_ev evt; | |
1477 | ||
1478 | if (cpl_op == CPL_FW6_MSG && opcode == FW_FCOE_LINK_CMD) { | |
1479 | ||
1480 | lcmd = (struct fw_fcoe_link_cmd *)cmd; | |
1481 | lstatus = lcmd->lstatus; | |
1482 | portid = FW_FCOE_LINK_CMD_PORTID_GET( | |
1483 | ntohl(lcmd->op_to_portid)); | |
1484 | fcfi = FW_FCOE_LINK_CMD_FCFI_GET(ntohl(lcmd->sub_opcode_fcfi)); | |
1485 | vnpi = FW_FCOE_LINK_CMD_VNPI_GET(ntohl(lcmd->vnpi_pkd)); | |
1486 | ||
1487 | if (lstatus == FCOE_LINKUP) { | |
1488 | ||
1489 | /* HW lock here */ | |
1490 | spin_lock_irq(&hw->lock); | |
1491 | csio_handle_link_up(hw, portid, fcfi, vnpi); | |
1492 | spin_unlock_irq(&hw->lock); | |
1493 | /* HW un lock here */ | |
1494 | ||
1495 | } else if (lstatus == FCOE_LINKDOWN) { | |
1496 | ||
1497 | /* HW lock here */ | |
1498 | spin_lock_irq(&hw->lock); | |
1499 | csio_handle_link_down(hw, portid, fcfi, vnpi); | |
1500 | spin_unlock_irq(&hw->lock); | |
1501 | /* HW un lock here */ | |
1502 | } else { | |
1503 | csio_warn(hw, "Unexpected FCOE LINK status:0x%x\n", | |
5036f0a0 | 1504 | lcmd->lstatus); |
a3667aae NKI |
1505 | CSIO_INC_STATS(hw, n_cpl_unexp); |
1506 | } | |
1507 | } else if (cpl_op == CPL_FW6_PLD) { | |
1508 | wr = (struct fw_wr_hdr *) (cmd + 4); | |
1509 | if (FW_WR_OP_GET(be32_to_cpu(wr->hi)) | |
1510 | == FW_RDEV_WR) { | |
1511 | ||
1512 | rdev_wr = (struct fw_rdev_wr *) (cmd + 4); | |
1513 | ||
1514 | rdev_flowid = FW_RDEV_WR_FLOWID_GET( | |
1515 | ntohl(rdev_wr->alloc_to_len16)); | |
1516 | vnpi = FW_RDEV_WR_ASSOC_FLOWID_GET( | |
1517 | ntohl(rdev_wr->flags_to_assoc_flowid)); | |
1518 | ||
1519 | csio_dbg(hw, | |
1520 | "FW_RDEV_WR: flowid:x%x ev_cause:x%x " | |
1521 | "vnpi:0x%x\n", rdev_flowid, | |
1522 | rdev_wr->event_cause, vnpi); | |
1523 | ||
1524 | if (rdev_wr->protocol != PROT_FCOE) { | |
1525 | csio_err(hw, | |
1526 | "FW_RDEV_WR: invalid proto:x%x " | |
1527 | "received with flowid:x%x\n", | |
1528 | rdev_wr->protocol, | |
1529 | rdev_flowid); | |
1530 | CSIO_INC_STATS(hw, n_evt_drop); | |
1531 | return; | |
1532 | } | |
1533 | ||
1534 | /* HW lock here */ | |
1535 | spin_lock_irq(&hw->lock); | |
1536 | ln = csio_ln_lookup_by_vnpi(hw, vnpi); | |
1537 | if (!ln) { | |
1538 | csio_err(hw, | |
1539 | "FW_DEV_WR: invalid vnpi:x%x received " | |
1540 | "with flowid:x%x\n", vnpi, rdev_flowid); | |
1541 | CSIO_INC_STATS(hw, n_evt_drop); | |
1542 | goto out_pld; | |
1543 | } | |
1544 | ||
1545 | rn = csio_confirm_rnode(ln, rdev_flowid, | |
1546 | &rdev_wr->u.fcoe_rdev); | |
1547 | if (!rn) { | |
1548 | csio_ln_dbg(ln, | |
1549 | "Failed to confirm rnode " | |
1550 | "for flowid:x%x\n", rdev_flowid); | |
1551 | CSIO_INC_STATS(hw, n_evt_drop); | |
1552 | goto out_pld; | |
1553 | } | |
1554 | ||
1555 | /* save previous event for debugging */ | |
1556 | ln->prev_evt = ln->cur_evt; | |
1557 | ln->cur_evt = rdev_wr->event_cause; | |
1558 | CSIO_INC_STATS(ln, n_evt_fw[rdev_wr->event_cause]); | |
1559 | ||
1560 | /* Translate all the fabric events to lnode SM events */ | |
1561 | evt = CSIO_FWE_TO_LNE(rdev_wr->event_cause); | |
1562 | if (evt) { | |
1563 | csio_ln_dbg(ln, | |
1564 | "Posting event to lnode event:%d " | |
1565 | "cause:%d flowid:x%x\n", evt, | |
1566 | rdev_wr->event_cause, rdev_flowid); | |
1567 | csio_post_event(&ln->sm, evt); | |
1568 | } | |
1569 | ||
1570 | /* Handover event to rn SM here. */ | |
1571 | csio_rnode_fwevt_handler(rn, rdev_wr->event_cause); | |
1572 | out_pld: | |
1573 | spin_unlock_irq(&hw->lock); | |
1574 | return; | |
1575 | } else { | |
1576 | csio_warn(hw, "unexpected WR op(0x%x) recv\n", | |
1577 | FW_WR_OP_GET(be32_to_cpu((wr->hi)))); | |
1578 | CSIO_INC_STATS(hw, n_cpl_unexp); | |
1579 | } | |
1580 | } else if (cpl_op == CPL_FW6_MSG) { | |
1581 | wr = (struct fw_wr_hdr *) (cmd); | |
1582 | if (FW_WR_OP_GET(be32_to_cpu(wr->hi)) == FW_FCOE_ELS_CT_WR) { | |
1583 | csio_ln_mgmt_wr_handler(hw, wr, | |
1584 | sizeof(struct fw_fcoe_els_ct_wr)); | |
1585 | } else { | |
1586 | csio_warn(hw, "unexpected WR op(0x%x) recv\n", | |
1587 | FW_WR_OP_GET(be32_to_cpu((wr->hi)))); | |
1588 | CSIO_INC_STATS(hw, n_cpl_unexp); | |
1589 | } | |
1590 | } else { | |
1591 | csio_warn(hw, "unexpected CPL op(0x%x) recv\n", opcode); | |
1592 | CSIO_INC_STATS(hw, n_cpl_unexp); | |
1593 | } | |
1594 | } | |
1595 | ||
1596 | /** | |
1597 | * csio_lnode_start - Kickstart lnode discovery. | |
1598 | * @ln: lnode | |
1599 | * | |
1600 | * This routine kickstarts the discovery by issuing an FCOE_LINK (up) command. | |
1601 | */ | |
1602 | int | |
1603 | csio_lnode_start(struct csio_lnode *ln) | |
1604 | { | |
1605 | int rv = 0; | |
1606 | if (csio_is_phys_ln(ln) && !(ln->flags & CSIO_LNF_LINK_ENABLE)) { | |
1607 | rv = csio_fcoe_enable_link(ln, 1); | |
1608 | ln->flags |= CSIO_LNF_LINK_ENABLE; | |
1609 | } | |
1610 | ||
1611 | return rv; | |
1612 | } | |
1613 | ||
1614 | /** | |
1615 | * csio_lnode_stop - Stop the lnode. | |
1616 | * @ln: lnode | |
1617 | * | |
1618 | * This routine is invoked by HW module to stop lnode and its associated NPIV | |
1619 | * lnodes. | |
1620 | */ | |
1621 | void | |
1622 | csio_lnode_stop(struct csio_lnode *ln) | |
1623 | { | |
1624 | csio_post_event_lns(ln, CSIO_LNE_DOWN_LINK); | |
1625 | if (csio_is_phys_ln(ln) && (ln->flags & CSIO_LNF_LINK_ENABLE)) { | |
1626 | csio_fcoe_enable_link(ln, 0); | |
1627 | ln->flags &= ~CSIO_LNF_LINK_ENABLE; | |
1628 | } | |
1629 | csio_ln_dbg(ln, "stopping ln :%p\n", ln); | |
1630 | } | |
1631 | ||
1632 | /** | |
1633 | * csio_lnode_close - Close an lnode. | |
1634 | * @ln: lnode | |
1635 | * | |
1636 | * This routine is invoked by HW module to close an lnode and its | |
1637 | * associated NPIV lnodes. Lnode and its associated NPIV lnodes are | |
1638 | * set to uninitialized state. | |
1639 | */ | |
1640 | void | |
1641 | csio_lnode_close(struct csio_lnode *ln) | |
1642 | { | |
1643 | csio_post_event_lns(ln, CSIO_LNE_CLOSE); | |
1644 | if (csio_is_phys_ln(ln)) | |
1645 | ln->vnp_flowid = CSIO_INVALID_IDX; | |
1646 | ||
1647 | csio_ln_dbg(ln, "closed ln :%p\n", ln); | |
1648 | } | |
1649 | ||
1650 | /* | |
1651 | * csio_ln_prep_ecwr - Prepare ELS/CT WR. | |
1652 | * @io_req - IO request. | |
1653 | * @wr_len - WR len | |
1654 | * @immd_len - WR immediate data | |
1655 | * @sub_op - Sub opcode | |
1656 | * @sid - source portid. | |
1657 | * @did - destination portid | |
1658 | * @flow_id - flowid | |
1659 | * @fw_wr - ELS/CT WR to be prepared. | |
1660 | * Returns: 0 - on success | |
1661 | */ | |
1662 | static int | |
1663 | csio_ln_prep_ecwr(struct csio_ioreq *io_req, uint32_t wr_len, | |
1664 | uint32_t immd_len, uint8_t sub_op, uint32_t sid, | |
1665 | uint32_t did, uint32_t flow_id, uint8_t *fw_wr) | |
1666 | { | |
1667 | struct fw_fcoe_els_ct_wr *wr; | |
5036f0a0 | 1668 | __be32 port_id; |
a3667aae NKI |
1669 | |
1670 | wr = (struct fw_fcoe_els_ct_wr *)fw_wr; | |
1671 | wr->op_immdlen = cpu_to_be32(FW_WR_OP(FW_FCOE_ELS_CT_WR) | | |
1672 | FW_FCOE_ELS_CT_WR_IMMDLEN(immd_len)); | |
1673 | ||
1674 | wr_len = DIV_ROUND_UP(wr_len, 16); | |
1675 | wr->flowid_len16 = cpu_to_be32(FW_WR_FLOWID(flow_id) | | |
1676 | FW_WR_LEN16(wr_len)); | |
1677 | wr->els_ct_type = sub_op; | |
1678 | wr->ctl_pri = 0; | |
1679 | wr->cp_en_class = 0; | |
1680 | wr->cookie = io_req->fw_handle; | |
5036f0a0 NKI |
1681 | wr->iqid = cpu_to_be16(csio_q_physiqid( |
1682 | io_req->lnode->hwp, io_req->iq_idx)); | |
a3667aae NKI |
1683 | wr->fl_to_sp = FW_FCOE_ELS_CT_WR_SP(1); |
1684 | wr->tmo_val = (uint8_t) io_req->tmo; | |
1685 | port_id = htonl(sid); | |
1686 | memcpy(wr->l_id, PORT_ID_PTR(port_id), 3); | |
1687 | port_id = htonl(did); | |
1688 | memcpy(wr->r_id, PORT_ID_PTR(port_id), 3); | |
1689 | ||
1690 | /* Prepare RSP SGL */ | |
1691 | wr->rsp_dmalen = cpu_to_be32(io_req->dma_buf.len); | |
1692 | wr->rsp_dmaaddr = cpu_to_be64(io_req->dma_buf.paddr); | |
1693 | return 0; | |
1694 | } | |
1695 | ||
1696 | /* | |
1697 | * csio_ln_mgmt_submit_wr - Post elsct work request. | |
1698 | * @mgmtm - mgmtm | |
1699 | * @io_req - io request. | |
1700 | * @sub_op - ELS or CT request type | |
1701 | * @pld - Dma Payload buffer | |
1702 | * @pld_len - Payload len | |
1703 | * Prepares ELSCT Work request and sents it to FW. | |
1704 | * Returns: 0 - on success | |
1705 | */ | |
1706 | static int | |
1707 | csio_ln_mgmt_submit_wr(struct csio_mgmtm *mgmtm, struct csio_ioreq *io_req, | |
1708 | uint8_t sub_op, struct csio_dma_buf *pld, | |
1709 | uint32_t pld_len) | |
1710 | { | |
1711 | struct csio_wr_pair wrp; | |
1712 | struct csio_lnode *ln = io_req->lnode; | |
1713 | struct csio_rnode *rn = io_req->rnode; | |
1714 | struct csio_hw *hw = mgmtm->hw; | |
1715 | uint8_t fw_wr[64]; | |
1716 | struct ulptx_sgl dsgl; | |
1717 | uint32_t wr_size = 0; | |
1718 | uint8_t im_len = 0; | |
1719 | uint32_t wr_off = 0; | |
1720 | ||
1721 | int ret = 0; | |
1722 | ||
1723 | /* Calculate WR Size for this ELS REQ */ | |
1724 | wr_size = sizeof(struct fw_fcoe_els_ct_wr); | |
1725 | ||
1726 | /* Send as immediate data if pld < 256 */ | |
1727 | if (pld_len < 256) { | |
1728 | wr_size += ALIGN(pld_len, 8); | |
1729 | im_len = (uint8_t)pld_len; | |
1730 | } else | |
1731 | wr_size += sizeof(struct ulptx_sgl); | |
1732 | ||
1733 | /* Roundup WR size in units of 16 bytes */ | |
1734 | wr_size = ALIGN(wr_size, 16); | |
1735 | ||
1736 | /* Get WR to send ELS REQ */ | |
1737 | ret = csio_wr_get(hw, mgmtm->eq_idx, wr_size, &wrp); | |
1738 | if (ret != 0) { | |
1739 | csio_err(hw, "Failed to get WR for ec_req %p ret:%d\n", | |
1740 | io_req, ret); | |
1741 | return ret; | |
1742 | } | |
1743 | ||
1744 | /* Prepare Generic WR used by all ELS/CT cmd */ | |
1745 | csio_ln_prep_ecwr(io_req, wr_size, im_len, sub_op, | |
1746 | ln->nport_id, rn->nport_id, | |
1747 | csio_rn_flowid(rn), | |
1748 | &fw_wr[0]); | |
1749 | ||
1750 | /* Copy ELS/CT WR CMD */ | |
1751 | csio_wr_copy_to_wrp(&fw_wr[0], &wrp, wr_off, | |
1752 | sizeof(struct fw_fcoe_els_ct_wr)); | |
1753 | wr_off += sizeof(struct fw_fcoe_els_ct_wr); | |
1754 | ||
1755 | /* Copy payload to Immediate section of WR */ | |
1756 | if (im_len) | |
1757 | csio_wr_copy_to_wrp(pld->vaddr, &wrp, wr_off, im_len); | |
1758 | else { | |
1759 | /* Program DSGL to dma payload */ | |
1760 | dsgl.cmd_nsge = htonl(ULPTX_CMD(ULP_TX_SC_DSGL) | | |
1761 | ULPTX_MORE | ULPTX_NSGE(1)); | |
1762 | dsgl.len0 = cpu_to_be32(pld_len); | |
1763 | dsgl.addr0 = cpu_to_be64(pld->paddr); | |
1764 | csio_wr_copy_to_wrp(&dsgl, &wrp, ALIGN(wr_off, 8), | |
1765 | sizeof(struct ulptx_sgl)); | |
1766 | } | |
1767 | ||
1768 | /* Issue work request to xmit ELS/CT req to FW */ | |
1769 | csio_wr_issue(mgmtm->hw, mgmtm->eq_idx, false); | |
1770 | return ret; | |
1771 | } | |
1772 | ||
1773 | /* | |
1774 | * csio_ln_mgmt_submit_req - Submit FCOE Mgmt request. | |
1775 | * @io_req - IO Request | |
1776 | * @io_cbfn - Completion handler. | |
1777 | * @req_type - ELS or CT request type | |
1778 | * @pld - Dma Payload buffer | |
1779 | * @pld_len - Payload len | |
1780 | * | |
1781 | * | |
1782 | * This API used submit managment ELS/CT request. | |
1783 | * This called with hw lock held | |
1784 | * Returns: 0 - on success | |
1785 | * -ENOMEM - on error. | |
1786 | */ | |
1787 | static int | |
1788 | csio_ln_mgmt_submit_req(struct csio_ioreq *io_req, | |
1789 | void (*io_cbfn) (struct csio_hw *, struct csio_ioreq *), | |
1790 | enum fcoe_cmn_type req_type, struct csio_dma_buf *pld, | |
1791 | uint32_t pld_len) | |
1792 | { | |
1793 | struct csio_hw *hw = csio_lnode_to_hw(io_req->lnode); | |
1794 | struct csio_mgmtm *mgmtm = csio_hw_to_mgmtm(hw); | |
1795 | int rv; | |
1796 | ||
1797 | io_req->io_cbfn = io_cbfn; /* Upper layer callback handler */ | |
1798 | io_req->fw_handle = (uintptr_t) (io_req); | |
1799 | io_req->eq_idx = mgmtm->eq_idx; | |
1800 | io_req->iq_idx = mgmtm->iq_idx; | |
1801 | ||
1802 | rv = csio_ln_mgmt_submit_wr(mgmtm, io_req, req_type, pld, pld_len); | |
1803 | if (rv == 0) { | |
1804 | list_add_tail(&io_req->sm.sm_list, &mgmtm->active_q); | |
1805 | mgmtm->stats.n_active++; | |
1806 | } | |
1807 | return rv; | |
1808 | } | |
1809 | ||
1810 | /* | |
1811 | * csio_ln_fdmi_init - FDMI Init entry point. | |
1812 | * @ln: lnode | |
1813 | */ | |
1814 | static int | |
1815 | csio_ln_fdmi_init(struct csio_lnode *ln) | |
1816 | { | |
1817 | struct csio_hw *hw = csio_lnode_to_hw(ln); | |
1818 | struct csio_dma_buf *dma_buf; | |
1819 | ||
1820 | /* Allocate MGMT request required for FDMI */ | |
1821 | ln->mgmt_req = kzalloc(sizeof(struct csio_ioreq), GFP_KERNEL); | |
1822 | if (!ln->mgmt_req) { | |
1823 | csio_ln_err(ln, "Failed to alloc ioreq for FDMI\n"); | |
1824 | CSIO_INC_STATS(hw, n_err_nomem); | |
1825 | return -ENOMEM; | |
1826 | } | |
1827 | ||
1828 | /* Allocate Dma buffers for FDMI response Payload */ | |
1829 | dma_buf = &ln->mgmt_req->dma_buf; | |
1830 | dma_buf->len = 2048; | |
1831 | dma_buf->vaddr = pci_alloc_consistent(hw->pdev, dma_buf->len, | |
1832 | &dma_buf->paddr); | |
1833 | if (!dma_buf->vaddr) { | |
1834 | csio_err(hw, "Failed to alloc DMA buffer for FDMI!\n"); | |
1835 | kfree(ln->mgmt_req); | |
1836 | ln->mgmt_req = NULL; | |
1837 | return -ENOMEM; | |
1838 | } | |
1839 | ||
1840 | ln->flags |= CSIO_LNF_FDMI_ENABLE; | |
1841 | return 0; | |
1842 | } | |
1843 | ||
1844 | /* | |
1845 | * csio_ln_fdmi_exit - FDMI exit entry point. | |
1846 | * @ln: lnode | |
1847 | */ | |
1848 | static int | |
1849 | csio_ln_fdmi_exit(struct csio_lnode *ln) | |
1850 | { | |
1851 | struct csio_dma_buf *dma_buf; | |
1852 | struct csio_hw *hw = csio_lnode_to_hw(ln); | |
1853 | ||
1854 | if (!ln->mgmt_req) | |
1855 | return 0; | |
1856 | ||
1857 | dma_buf = &ln->mgmt_req->dma_buf; | |
1858 | if (dma_buf->vaddr) | |
1859 | pci_free_consistent(hw->pdev, dma_buf->len, dma_buf->vaddr, | |
1860 | dma_buf->paddr); | |
1861 | ||
1862 | kfree(ln->mgmt_req); | |
1863 | return 0; | |
1864 | } | |
1865 | ||
1866 | int | |
1867 | csio_scan_done(struct csio_lnode *ln, unsigned long ticks, | |
1868 | unsigned long time, unsigned long max_scan_ticks, | |
1869 | unsigned long delta_scan_ticks) | |
1870 | { | |
1871 | int rv = 0; | |
1872 | ||
1873 | if (time >= max_scan_ticks) | |
1874 | return 1; | |
1875 | ||
1876 | if (!ln->tgt_scan_tick) | |
1877 | ln->tgt_scan_tick = ticks; | |
1878 | ||
1879 | if (((ticks - ln->tgt_scan_tick) >= delta_scan_ticks)) { | |
1880 | if (!ln->last_scan_ntgts) | |
1881 | ln->last_scan_ntgts = ln->n_scsi_tgts; | |
1882 | else { | |
1883 | if (ln->last_scan_ntgts == ln->n_scsi_tgts) | |
1884 | return 1; | |
1885 | ||
1886 | ln->last_scan_ntgts = ln->n_scsi_tgts; | |
1887 | } | |
1888 | ln->tgt_scan_tick = ticks; | |
1889 | } | |
1890 | return rv; | |
1891 | } | |
1892 | ||
1893 | /* | |
1894 | * csio_notify_lnodes: | |
1895 | * @hw: HW module | |
1896 | * @note: Notification | |
1897 | * | |
1898 | * Called from the HW SM to fan out notifications to the | |
1899 | * Lnode SM. Since the HW SM is entered with lock held, | |
1900 | * there is no need to hold locks here. | |
1901 | * | |
1902 | */ | |
1903 | void | |
1904 | csio_notify_lnodes(struct csio_hw *hw, enum csio_ln_notify note) | |
1905 | { | |
1906 | struct list_head *tmp; | |
1907 | struct csio_lnode *ln; | |
1908 | ||
1909 | csio_dbg(hw, "Notifying all nodes of event %d\n", note); | |
1910 | ||
1911 | /* Traverse children lnodes list and send evt */ | |
1912 | list_for_each(tmp, &hw->sln_head) { | |
1913 | ln = (struct csio_lnode *) tmp; | |
1914 | ||
1915 | switch (note) { | |
1916 | case CSIO_LN_NOTIFY_HWREADY: | |
1917 | csio_lnode_start(ln); | |
1918 | break; | |
1919 | ||
1920 | case CSIO_LN_NOTIFY_HWRESET: | |
1921 | case CSIO_LN_NOTIFY_HWREMOVE: | |
1922 | csio_lnode_close(ln); | |
1923 | break; | |
1924 | ||
1925 | case CSIO_LN_NOTIFY_HWSTOP: | |
1926 | csio_lnode_stop(ln); | |
1927 | break; | |
1928 | ||
1929 | default: | |
1930 | break; | |
1931 | ||
1932 | } | |
1933 | } | |
1934 | } | |
1935 | ||
1936 | /* | |
1937 | * csio_disable_lnodes: | |
1938 | * @hw: HW module | |
1939 | * @portid:port id | |
1940 | * @disable: disable/enable flag. | |
1941 | * If disable=1, disables all lnode hosted on given physical port. | |
1942 | * otherwise enables all the lnodes on given phsysical port. | |
1943 | * This routine need to called with hw lock held. | |
1944 | */ | |
1945 | void | |
1946 | csio_disable_lnodes(struct csio_hw *hw, uint8_t portid, bool disable) | |
1947 | { | |
1948 | struct list_head *tmp; | |
1949 | struct csio_lnode *ln; | |
1950 | ||
1951 | csio_dbg(hw, "Notifying event to all nodes of port:%d\n", portid); | |
1952 | ||
1953 | /* Traverse sibling lnodes list and send evt */ | |
1954 | list_for_each(tmp, &hw->sln_head) { | |
1955 | ln = (struct csio_lnode *) tmp; | |
1956 | if (ln->portid != portid) | |
1957 | continue; | |
1958 | ||
1959 | if (disable) | |
1960 | csio_lnode_stop(ln); | |
1961 | else | |
1962 | csio_lnode_start(ln); | |
1963 | } | |
1964 | } | |
1965 | ||
1966 | /* | |
1967 | * csio_ln_init - Initialize an lnode. | |
1968 | * @ln: lnode | |
1969 | * | |
1970 | */ | |
1971 | static int | |
1972 | csio_ln_init(struct csio_lnode *ln) | |
1973 | { | |
1974 | int rv = -EINVAL; | |
1975 | struct csio_lnode *rln, *pln; | |
1976 | struct csio_hw *hw = csio_lnode_to_hw(ln); | |
1977 | ||
1978 | csio_init_state(&ln->sm, csio_lns_uninit); | |
1979 | ln->vnp_flowid = CSIO_INVALID_IDX; | |
1980 | ln->fcf_flowid = CSIO_INVALID_IDX; | |
1981 | ||
1982 | if (csio_is_root_ln(ln)) { | |
1983 | ||
1984 | /* This is the lnode used during initialization */ | |
1985 | ||
1986 | ln->fcfinfo = kzalloc(sizeof(struct csio_fcf_info), GFP_KERNEL); | |
1987 | if (!ln->fcfinfo) { | |
1988 | csio_ln_err(ln, "Failed to alloc FCF record\n"); | |
1989 | CSIO_INC_STATS(hw, n_err_nomem); | |
1990 | goto err; | |
1991 | } | |
1992 | ||
1993 | INIT_LIST_HEAD(&ln->fcf_lsthead); | |
1994 | kref_init(&ln->fcfinfo->kref); | |
1995 | ||
1996 | if (csio_fdmi_enable && csio_ln_fdmi_init(ln)) | |
1997 | goto err; | |
1998 | ||
1999 | } else { /* Either a non-root physical or a virtual lnode */ | |
2000 | ||
2001 | /* | |
2002 | * THe rest is common for non-root physical and NPIV lnodes. | |
2003 | * Just get references to all other modules | |
2004 | */ | |
2005 | rln = csio_root_lnode(ln); | |
2006 | ||
2007 | if (csio_is_npiv_ln(ln)) { | |
2008 | /* NPIV */ | |
2009 | pln = csio_parent_lnode(ln); | |
2010 | kref_get(&pln->fcfinfo->kref); | |
2011 | ln->fcfinfo = pln->fcfinfo; | |
2012 | } else { | |
2013 | /* Another non-root physical lnode (FCF) */ | |
2014 | ln->fcfinfo = kzalloc(sizeof(struct csio_fcf_info), | |
2015 | GFP_KERNEL); | |
2016 | if (!ln->fcfinfo) { | |
2017 | csio_ln_err(ln, "Failed to alloc FCF info\n"); | |
2018 | CSIO_INC_STATS(hw, n_err_nomem); | |
2019 | goto err; | |
2020 | } | |
2021 | ||
2022 | kref_init(&ln->fcfinfo->kref); | |
2023 | ||
2024 | if (csio_fdmi_enable && csio_ln_fdmi_init(ln)) | |
2025 | goto err; | |
2026 | } | |
2027 | ||
2028 | } /* if (!csio_is_root_ln(ln)) */ | |
2029 | ||
2030 | return 0; | |
2031 | err: | |
2032 | return rv; | |
2033 | } | |
2034 | ||
2035 | static void | |
2036 | csio_ln_exit(struct csio_lnode *ln) | |
2037 | { | |
2038 | struct csio_lnode *pln; | |
2039 | ||
2040 | csio_cleanup_rns(ln); | |
2041 | if (csio_is_npiv_ln(ln)) { | |
2042 | pln = csio_parent_lnode(ln); | |
2043 | kref_put(&pln->fcfinfo->kref, csio_free_fcfinfo); | |
2044 | } else { | |
2045 | kref_put(&ln->fcfinfo->kref, csio_free_fcfinfo); | |
2046 | if (csio_fdmi_enable) | |
2047 | csio_ln_fdmi_exit(ln); | |
2048 | } | |
2049 | ln->fcfinfo = NULL; | |
2050 | } | |
2051 | ||
2052 | /** | |
2053 | * csio_lnode_init - Initialize the members of an lnode. | |
2054 | * @ln: lnode | |
2055 | * | |
2056 | */ | |
2057 | int | |
2058 | csio_lnode_init(struct csio_lnode *ln, struct csio_hw *hw, | |
2059 | struct csio_lnode *pln) | |
2060 | { | |
2061 | int rv = -EINVAL; | |
2062 | ||
2063 | /* Link this lnode to hw */ | |
2064 | csio_lnode_to_hw(ln) = hw; | |
2065 | ||
2066 | /* Link child to parent if child lnode */ | |
2067 | if (pln) | |
2068 | ln->pln = pln; | |
2069 | else | |
2070 | ln->pln = NULL; | |
2071 | ||
2072 | /* Initialize scsi_tgt and timers to zero */ | |
2073 | ln->n_scsi_tgts = 0; | |
2074 | ln->last_scan_ntgts = 0; | |
2075 | ln->tgt_scan_tick = 0; | |
2076 | ||
2077 | /* Initialize rnode list */ | |
2078 | INIT_LIST_HEAD(&ln->rnhead); | |
2079 | INIT_LIST_HEAD(&ln->cln_head); | |
2080 | ||
2081 | /* Initialize log level for debug */ | |
2082 | ln->params.log_level = hw->params.log_level; | |
2083 | ||
2084 | if (csio_ln_init(ln)) | |
2085 | goto err; | |
2086 | ||
2087 | /* Add lnode to list of sibling or children lnodes */ | |
2088 | spin_lock_irq(&hw->lock); | |
2089 | list_add_tail(&ln->sm.sm_list, pln ? &pln->cln_head : &hw->sln_head); | |
2090 | if (pln) | |
2091 | pln->num_vports++; | |
2092 | spin_unlock_irq(&hw->lock); | |
2093 | ||
2094 | hw->num_lns++; | |
2095 | ||
2096 | return 0; | |
2097 | err: | |
2098 | csio_lnode_to_hw(ln) = NULL; | |
2099 | return rv; | |
2100 | } | |
2101 | ||
2102 | /** | |
2103 | * csio_lnode_exit - De-instantiate an lnode. | |
2104 | * @ln: lnode | |
2105 | * | |
2106 | */ | |
2107 | void | |
2108 | csio_lnode_exit(struct csio_lnode *ln) | |
2109 | { | |
2110 | struct csio_hw *hw = csio_lnode_to_hw(ln); | |
2111 | ||
2112 | csio_ln_exit(ln); | |
2113 | ||
2114 | /* Remove this lnode from hw->sln_head */ | |
2115 | spin_lock_irq(&hw->lock); | |
2116 | ||
2117 | list_del_init(&ln->sm.sm_list); | |
2118 | ||
2119 | /* If it is children lnode, decrement the | |
2120 | * counter in its parent lnode | |
2121 | */ | |
2122 | if (ln->pln) | |
2123 | ln->pln->num_vports--; | |
2124 | ||
2125 | /* Update root lnode pointer */ | |
2126 | if (list_empty(&hw->sln_head)) | |
2127 | hw->rln = NULL; | |
2128 | else | |
2129 | hw->rln = (struct csio_lnode *)csio_list_next(&hw->sln_head); | |
2130 | ||
2131 | spin_unlock_irq(&hw->lock); | |
2132 | ||
2133 | csio_lnode_to_hw(ln) = NULL; | |
2134 | hw->num_lns--; | |
2135 | } |