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Commit | Line | Data |
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853e2bd2 BG |
1 | /* bnx2fc_tgt.c: Broadcom NetXtreme II Linux FCoE offload driver. |
2 | * Handles operations such as session offload/upload etc, and manages | |
3 | * session resources such as connection id and qp resources. | |
4 | * | |
9b35baae | 5 | * Copyright (c) 2008 - 2011 Broadcom Corporation |
853e2bd2 BG |
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 | static void bnx2fc_upld_timer(unsigned long data); | |
16 | static void bnx2fc_ofld_timer(unsigned long data); | |
17 | static int bnx2fc_init_tgt(struct bnx2fc_rport *tgt, | |
18 | struct fcoe_port *port, | |
19 | struct fc_rport_priv *rdata); | |
20 | static u32 bnx2fc_alloc_conn_id(struct bnx2fc_hba *hba, | |
21 | struct bnx2fc_rport *tgt); | |
22 | static int bnx2fc_alloc_session_resc(struct bnx2fc_hba *hba, | |
23 | struct bnx2fc_rport *tgt); | |
24 | static void bnx2fc_free_session_resc(struct bnx2fc_hba *hba, | |
25 | struct bnx2fc_rport *tgt); | |
26 | static void bnx2fc_free_conn_id(struct bnx2fc_hba *hba, u32 conn_id); | |
27 | ||
28 | static void bnx2fc_upld_timer(unsigned long data) | |
29 | { | |
30 | ||
31 | struct bnx2fc_rport *tgt = (struct bnx2fc_rport *)data; | |
32 | ||
33 | BNX2FC_TGT_DBG(tgt, "upld_timer - Upload compl not received!!\n"); | |
34 | /* fake upload completion */ | |
35 | clear_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags); | |
e7f4fed5 | 36 | clear_bit(BNX2FC_FLAG_ENABLED, &tgt->flags); |
853e2bd2 BG |
37 | set_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags); |
38 | wake_up_interruptible(&tgt->upld_wait); | |
39 | } | |
40 | ||
41 | static void bnx2fc_ofld_timer(unsigned long data) | |
42 | { | |
43 | ||
44 | struct bnx2fc_rport *tgt = (struct bnx2fc_rport *)data; | |
45 | ||
46 | BNX2FC_TGT_DBG(tgt, "entered bnx2fc_ofld_timer\n"); | |
47 | /* NOTE: This function should never be called, as | |
48 | * offload should never timeout | |
49 | */ | |
50 | /* | |
51 | * If the timer has expired, this session is dead | |
52 | * Clear offloaded flag and logout of this device. | |
53 | * Since OFFLOADED flag is cleared, this case | |
54 | * will be considered as offload error and the | |
55 | * port will be logged off, and conn_id, session | |
56 | * resources are freed up in bnx2fc_offload_session | |
57 | */ | |
58 | clear_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags); | |
e7f4fed5 | 59 | clear_bit(BNX2FC_FLAG_ENABLED, &tgt->flags); |
853e2bd2 BG |
60 | set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags); |
61 | wake_up_interruptible(&tgt->ofld_wait); | |
62 | } | |
63 | ||
26bf62a3 BPG |
64 | static void bnx2fc_ofld_wait(struct bnx2fc_rport *tgt) |
65 | { | |
66 | setup_timer(&tgt->ofld_timer, bnx2fc_ofld_timer, (unsigned long)tgt); | |
67 | mod_timer(&tgt->ofld_timer, jiffies + BNX2FC_FW_TIMEOUT); | |
68 | ||
69 | wait_event_interruptible(tgt->ofld_wait, | |
70 | (test_bit( | |
71 | BNX2FC_FLAG_OFLD_REQ_CMPL, | |
72 | &tgt->flags))); | |
73 | if (signal_pending(current)) | |
74 | flush_signals(current); | |
75 | del_timer_sync(&tgt->ofld_timer); | |
76 | } | |
77 | ||
853e2bd2 BG |
78 | static void bnx2fc_offload_session(struct fcoe_port *port, |
79 | struct bnx2fc_rport *tgt, | |
80 | struct fc_rport_priv *rdata) | |
81 | { | |
82 | struct fc_lport *lport = rdata->local_port; | |
83 | struct fc_rport *rport = rdata->rport; | |
aea71a02 BPG |
84 | struct bnx2fc_interface *interface = port->priv; |
85 | struct bnx2fc_hba *hba = interface->hba; | |
853e2bd2 BG |
86 | int rval; |
87 | int i = 0; | |
88 | ||
89 | /* Initialize bnx2fc_rport */ | |
90 | /* NOTE: tgt is already bzero'd */ | |
91 | rval = bnx2fc_init_tgt(tgt, port, rdata); | |
92 | if (rval) { | |
93 | printk(KERN_ERR PFX "Failed to allocate conn id for " | |
94 | "port_id (%6x)\n", rport->port_id); | |
5fb8fd0d | 95 | goto tgt_init_err; |
853e2bd2 BG |
96 | } |
97 | ||
98 | /* Allocate session resources */ | |
99 | rval = bnx2fc_alloc_session_resc(hba, tgt); | |
100 | if (rval) { | |
101 | printk(KERN_ERR PFX "Failed to allocate resources\n"); | |
102 | goto ofld_err; | |
103 | } | |
104 | ||
105 | /* | |
106 | * Initialize FCoE session offload process. | |
107 | * Upon completion of offload process add | |
108 | * rport to list of rports | |
109 | */ | |
110 | retry_ofld: | |
111 | clear_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags); | |
112 | rval = bnx2fc_send_session_ofld_req(port, tgt); | |
113 | if (rval) { | |
114 | printk(KERN_ERR PFX "ofld_req failed\n"); | |
115 | goto ofld_err; | |
116 | } | |
117 | ||
118 | /* | |
119 | * wait for the session is offloaded and enabled. 3 Secs | |
120 | * should be ample time for this process to complete. | |
121 | */ | |
26bf62a3 | 122 | bnx2fc_ofld_wait(tgt); |
853e2bd2 BG |
123 | |
124 | if (!(test_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags))) { | |
125 | if (test_and_clear_bit(BNX2FC_FLAG_CTX_ALLOC_FAILURE, | |
126 | &tgt->flags)) { | |
127 | BNX2FC_TGT_DBG(tgt, "ctx_alloc_failure, " | |
128 | "retry ofld..%d\n", i++); | |
129 | msleep_interruptible(1000); | |
130 | if (i > 3) { | |
131 | i = 0; | |
132 | goto ofld_err; | |
133 | } | |
134 | goto retry_ofld; | |
135 | } | |
136 | goto ofld_err; | |
137 | } | |
138 | if (bnx2fc_map_doorbell(tgt)) { | |
139 | printk(KERN_ERR PFX "map doorbell failed - no mem\n"); | |
e7f4fed5 BPG |
140 | goto ofld_err; |
141 | } | |
142 | clear_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags); | |
143 | rval = bnx2fc_send_session_enable_req(port, tgt); | |
144 | if (rval) { | |
145 | pr_err(PFX "enable session failed\n"); | |
146 | goto ofld_err; | |
a96e8e11 | 147 | } |
e7f4fed5 BPG |
148 | bnx2fc_ofld_wait(tgt); |
149 | if (!(test_bit(BNX2FC_FLAG_ENABLED, &tgt->flags))) | |
150 | goto ofld_err; | |
853e2bd2 BG |
151 | return; |
152 | ||
153 | ofld_err: | |
154 | /* couldn't offload the session. log off from this rport */ | |
155 | BNX2FC_TGT_DBG(tgt, "bnx2fc_offload_session - offload error\n"); | |
e7f4fed5 | 156 | clear_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags); |
853e2bd2 BG |
157 | /* Free session resources */ |
158 | bnx2fc_free_session_resc(hba, tgt); | |
5fb8fd0d | 159 | tgt_init_err: |
853e2bd2 BG |
160 | if (tgt->fcoe_conn_id != -1) |
161 | bnx2fc_free_conn_id(hba, tgt->fcoe_conn_id); | |
5fb8fd0d | 162 | lport->tt.rport_logoff(rdata); |
853e2bd2 BG |
163 | } |
164 | ||
165 | void bnx2fc_flush_active_ios(struct bnx2fc_rport *tgt) | |
166 | { | |
167 | struct bnx2fc_cmd *io_req; | |
d71fb3bd | 168 | struct bnx2fc_cmd *tmp; |
853e2bd2 BG |
169 | int rc; |
170 | int i = 0; | |
171 | BNX2FC_TGT_DBG(tgt, "Entered flush_active_ios - %d\n", | |
172 | tgt->num_active_ios.counter); | |
173 | ||
174 | spin_lock_bh(&tgt->tgt_lock); | |
175 | tgt->flush_in_prog = 1; | |
176 | ||
d71fb3bd | 177 | list_for_each_entry_safe(io_req, tmp, &tgt->active_cmd_queue, link) { |
853e2bd2 | 178 | i++; |
853e2bd2 BG |
179 | list_del_init(&io_req->link); |
180 | io_req->on_active_queue = 0; | |
181 | BNX2FC_IO_DBG(io_req, "cmd_queue cleanup\n"); | |
182 | ||
183 | if (cancel_delayed_work(&io_req->timeout_work)) { | |
184 | if (test_and_clear_bit(BNX2FC_FLAG_EH_ABORT, | |
185 | &io_req->req_flags)) { | |
186 | /* Handle eh_abort timeout */ | |
187 | BNX2FC_IO_DBG(io_req, "eh_abort for IO " | |
188 | "cleaned up\n"); | |
189 | complete(&io_req->tm_done); | |
190 | } | |
191 | kref_put(&io_req->refcount, | |
192 | bnx2fc_cmd_release); /* drop timer hold */ | |
193 | } | |
194 | ||
195 | set_bit(BNX2FC_FLAG_IO_COMPL, &io_req->req_flags); | |
196 | set_bit(BNX2FC_FLAG_IO_CLEANUP, &io_req->req_flags); | |
5c17ae21 BPG |
197 | |
198 | /* Do not issue cleanup when disable request failed */ | |
199 | if (test_bit(BNX2FC_FLAG_DISABLE_FAILED, &tgt->flags)) | |
200 | bnx2fc_process_cleanup_compl(io_req, io_req->task, 0); | |
201 | else { | |
202 | rc = bnx2fc_initiate_cleanup(io_req); | |
203 | BUG_ON(rc); | |
204 | } | |
853e2bd2 BG |
205 | } |
206 | ||
d71fb3bd | 207 | list_for_each_entry_safe(io_req, tmp, &tgt->active_tm_queue, link) { |
92886c9c | 208 | i++; |
92886c9c BPG |
209 | list_del_init(&io_req->link); |
210 | io_req->on_tmf_queue = 0; | |
211 | BNX2FC_IO_DBG(io_req, "tm_queue cleanup\n"); | |
212 | if (io_req->wait_for_comp) | |
213 | complete(&io_req->tm_done); | |
214 | } | |
215 | ||
d71fb3bd | 216 | list_for_each_entry_safe(io_req, tmp, &tgt->els_queue, link) { |
853e2bd2 | 217 | i++; |
853e2bd2 BG |
218 | list_del_init(&io_req->link); |
219 | io_req->on_active_queue = 0; | |
220 | ||
221 | BNX2FC_IO_DBG(io_req, "els_queue cleanup\n"); | |
222 | ||
223 | if (cancel_delayed_work(&io_req->timeout_work)) | |
224 | kref_put(&io_req->refcount, | |
225 | bnx2fc_cmd_release); /* drop timer hold */ | |
226 | ||
227 | if ((io_req->cb_func) && (io_req->cb_arg)) { | |
228 | io_req->cb_func(io_req->cb_arg); | |
229 | io_req->cb_arg = NULL; | |
230 | } | |
231 | ||
5c17ae21 BPG |
232 | /* Do not issue cleanup when disable request failed */ |
233 | if (test_bit(BNX2FC_FLAG_DISABLE_FAILED, &tgt->flags)) | |
234 | bnx2fc_process_cleanup_compl(io_req, io_req->task, 0); | |
235 | else { | |
236 | rc = bnx2fc_initiate_cleanup(io_req); | |
237 | BUG_ON(rc); | |
238 | } | |
853e2bd2 BG |
239 | } |
240 | ||
d71fb3bd | 241 | list_for_each_entry_safe(io_req, tmp, &tgt->io_retire_queue, link) { |
853e2bd2 | 242 | i++; |
853e2bd2 BG |
243 | list_del_init(&io_req->link); |
244 | ||
245 | BNX2FC_IO_DBG(io_req, "retire_queue flush\n"); | |
246 | ||
c1bb4f33 BPG |
247 | if (cancel_delayed_work(&io_req->timeout_work)) { |
248 | if (test_and_clear_bit(BNX2FC_FLAG_EH_ABORT, | |
249 | &io_req->req_flags)) { | |
250 | /* Handle eh_abort timeout */ | |
251 | BNX2FC_IO_DBG(io_req, "eh_abort for IO " | |
252 | "in retire_q\n"); | |
253 | if (io_req->wait_for_comp) | |
254 | complete(&io_req->tm_done); | |
255 | } | |
853e2bd2 | 256 | kref_put(&io_req->refcount, bnx2fc_cmd_release); |
c1bb4f33 | 257 | } |
853e2bd2 BG |
258 | |
259 | clear_bit(BNX2FC_FLAG_ISSUE_RRQ, &io_req->req_flags); | |
260 | } | |
261 | ||
262 | BNX2FC_TGT_DBG(tgt, "IOs flushed = %d\n", i); | |
263 | i = 0; | |
264 | spin_unlock_bh(&tgt->tgt_lock); | |
265 | /* wait for active_ios to go to 0 */ | |
266 | while ((tgt->num_active_ios.counter != 0) && (i++ < BNX2FC_WAIT_CNT)) | |
267 | msleep(25); | |
268 | if (tgt->num_active_ios.counter != 0) | |
269 | printk(KERN_ERR PFX "CLEANUP on port 0x%x:" | |
270 | " active_ios = %d\n", | |
271 | tgt->rdata->ids.port_id, tgt->num_active_ios.counter); | |
272 | spin_lock_bh(&tgt->tgt_lock); | |
273 | tgt->flush_in_prog = 0; | |
274 | spin_unlock_bh(&tgt->tgt_lock); | |
275 | } | |
276 | ||
26bf62a3 BPG |
277 | static void bnx2fc_upld_wait(struct bnx2fc_rport *tgt) |
278 | { | |
279 | setup_timer(&tgt->upld_timer, bnx2fc_upld_timer, (unsigned long)tgt); | |
280 | mod_timer(&tgt->upld_timer, jiffies + BNX2FC_FW_TIMEOUT); | |
281 | wait_event_interruptible(tgt->upld_wait, | |
282 | (test_bit( | |
283 | BNX2FC_FLAG_UPLD_REQ_COMPL, | |
284 | &tgt->flags))); | |
285 | if (signal_pending(current)) | |
286 | flush_signals(current); | |
287 | del_timer_sync(&tgt->upld_timer); | |
288 | } | |
289 | ||
853e2bd2 BG |
290 | static void bnx2fc_upload_session(struct fcoe_port *port, |
291 | struct bnx2fc_rport *tgt) | |
292 | { | |
aea71a02 BPG |
293 | struct bnx2fc_interface *interface = port->priv; |
294 | struct bnx2fc_hba *hba = interface->hba; | |
853e2bd2 BG |
295 | |
296 | BNX2FC_TGT_DBG(tgt, "upload_session: active_ios = %d\n", | |
297 | tgt->num_active_ios.counter); | |
298 | ||
299 | /* | |
300 | * Called with hba->hba_mutex held. | |
301 | * This is a blocking call | |
302 | */ | |
303 | clear_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags); | |
304 | bnx2fc_send_session_disable_req(port, tgt); | |
305 | ||
306 | /* | |
307 | * wait for upload to complete. 3 Secs | |
308 | * should be sufficient time for this process to complete. | |
309 | */ | |
853e2bd2 | 310 | BNX2FC_TGT_DBG(tgt, "waiting for disable compl\n"); |
26bf62a3 | 311 | bnx2fc_upld_wait(tgt); |
853e2bd2 BG |
312 | |
313 | /* | |
314 | * traverse thru the active_q and tmf_q and cleanup | |
315 | * IOs in these lists | |
316 | */ | |
317 | BNX2FC_TGT_DBG(tgt, "flush/upload - disable wait flags = 0x%lx\n", | |
318 | tgt->flags); | |
319 | bnx2fc_flush_active_ios(tgt); | |
320 | ||
321 | /* Issue destroy KWQE */ | |
322 | if (test_bit(BNX2FC_FLAG_DISABLED, &tgt->flags)) { | |
323 | BNX2FC_TGT_DBG(tgt, "send destroy req\n"); | |
324 | clear_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags); | |
325 | bnx2fc_send_session_destroy_req(hba, tgt); | |
326 | ||
327 | /* wait for destroy to complete */ | |
26bf62a3 | 328 | bnx2fc_upld_wait(tgt); |
853e2bd2 BG |
329 | |
330 | if (!(test_bit(BNX2FC_FLAG_DESTROYED, &tgt->flags))) | |
331 | printk(KERN_ERR PFX "ERROR!! destroy timed out\n"); | |
332 | ||
333 | BNX2FC_TGT_DBG(tgt, "destroy wait complete flags = 0x%lx\n", | |
334 | tgt->flags); | |
853e2bd2 | 335 | |
5c17ae21 BPG |
336 | } else if (test_bit(BNX2FC_FLAG_DISABLE_FAILED, &tgt->flags)) { |
337 | printk(KERN_ERR PFX "ERROR!! DISABLE req failed, destroy" | |
338 | " not sent to FW\n"); | |
339 | } else { | |
853e2bd2 BG |
340 | printk(KERN_ERR PFX "ERROR!! DISABLE req timed out, destroy" |
341 | " not sent to FW\n"); | |
5c17ae21 | 342 | } |
853e2bd2 BG |
343 | |
344 | /* Free session resources */ | |
853e2bd2 BG |
345 | bnx2fc_free_session_resc(hba, tgt); |
346 | bnx2fc_free_conn_id(hba, tgt->fcoe_conn_id); | |
853e2bd2 BG |
347 | } |
348 | ||
349 | static int bnx2fc_init_tgt(struct bnx2fc_rport *tgt, | |
350 | struct fcoe_port *port, | |
351 | struct fc_rport_priv *rdata) | |
352 | { | |
353 | ||
354 | struct fc_rport *rport = rdata->rport; | |
aea71a02 BPG |
355 | struct bnx2fc_interface *interface = port->priv; |
356 | struct bnx2fc_hba *hba = interface->hba; | |
619c5cb6 VZ |
357 | struct b577xx_doorbell_set_prod *sq_db = &tgt->sq_db; |
358 | struct b577xx_fcoe_rx_doorbell *rx_db = &tgt->rx_db; | |
853e2bd2 BG |
359 | |
360 | tgt->rport = rport; | |
361 | tgt->rdata = rdata; | |
362 | tgt->port = port; | |
363 | ||
364 | if (hba->num_ofld_sess >= BNX2FC_NUM_MAX_SESS) { | |
365 | BNX2FC_TGT_DBG(tgt, "exceeded max sessions. logoff this tgt\n"); | |
366 | tgt->fcoe_conn_id = -1; | |
367 | return -1; | |
368 | } | |
369 | ||
370 | tgt->fcoe_conn_id = bnx2fc_alloc_conn_id(hba, tgt); | |
371 | if (tgt->fcoe_conn_id == -1) | |
372 | return -1; | |
373 | ||
374 | BNX2FC_TGT_DBG(tgt, "init_tgt - conn_id = 0x%x\n", tgt->fcoe_conn_id); | |
375 | ||
376 | tgt->max_sqes = BNX2FC_SQ_WQES_MAX; | |
377 | tgt->max_rqes = BNX2FC_RQ_WQES_MAX; | |
378 | tgt->max_cqes = BNX2FC_CQ_WQES_MAX; | |
619c5cb6 | 379 | atomic_set(&tgt->free_sqes, BNX2FC_SQ_WQES_MAX); |
853e2bd2 BG |
380 | |
381 | /* Initialize the toggle bit */ | |
382 | tgt->sq_curr_toggle_bit = 1; | |
383 | tgt->cq_curr_toggle_bit = 1; | |
384 | tgt->sq_prod_idx = 0; | |
385 | tgt->cq_cons_idx = 0; | |
386 | tgt->rq_prod_idx = 0x8000; | |
387 | tgt->rq_cons_idx = 0; | |
388 | atomic_set(&tgt->num_active_ios, 0); | |
389 | ||
50b7186f BPG |
390 | if (rdata->flags & FC_RP_FLAGS_RETRY && |
391 | rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET && | |
392 | !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) { | |
b252f4c7 BPG |
393 | tgt->dev_type = TYPE_TAPE; |
394 | tgt->io_timeout = 0; /* use default ULP timeout */ | |
395 | } else { | |
396 | tgt->dev_type = TYPE_DISK; | |
397 | tgt->io_timeout = BNX2FC_IO_TIMEOUT; | |
398 | } | |
399 | ||
619c5cb6 VZ |
400 | /* initialize sq doorbell */ |
401 | sq_db->header.header = B577XX_DOORBELL_HDR_DB_TYPE; | |
402 | sq_db->header.header |= B577XX_FCOE_CONNECTION_TYPE << | |
403 | B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT; | |
404 | /* initialize rx doorbell */ | |
405 | rx_db->hdr.header = ((0x1 << B577XX_DOORBELL_HDR_RX_SHIFT) | | |
406 | (0x1 << B577XX_DOORBELL_HDR_DB_TYPE_SHIFT) | | |
407 | (B577XX_FCOE_CONNECTION_TYPE << | |
408 | B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT)); | |
409 | rx_db->params = (0x2 << B577XX_FCOE_RX_DOORBELL_NEGATIVE_ARM_SHIFT) | | |
410 | (0x3 << B577XX_FCOE_RX_DOORBELL_OPCODE_SHIFT); | |
853e2bd2 BG |
411 | |
412 | spin_lock_init(&tgt->tgt_lock); | |
413 | spin_lock_init(&tgt->cq_lock); | |
414 | ||
415 | /* Initialize active_cmd_queue list */ | |
416 | INIT_LIST_HEAD(&tgt->active_cmd_queue); | |
417 | ||
418 | /* Initialize IO retire queue */ | |
419 | INIT_LIST_HEAD(&tgt->io_retire_queue); | |
420 | ||
421 | INIT_LIST_HEAD(&tgt->els_queue); | |
422 | ||
423 | /* Initialize active_tm_queue list */ | |
424 | INIT_LIST_HEAD(&tgt->active_tm_queue); | |
425 | ||
426 | init_waitqueue_head(&tgt->ofld_wait); | |
427 | init_waitqueue_head(&tgt->upld_wait); | |
428 | ||
429 | return 0; | |
430 | } | |
431 | ||
432 | /** | |
433 | * This event_callback is called after successful completion of libfc | |
434 | * initiated target login. bnx2fc can proceed with initiating the session | |
435 | * establishment. | |
436 | */ | |
437 | void bnx2fc_rport_event_handler(struct fc_lport *lport, | |
438 | struct fc_rport_priv *rdata, | |
439 | enum fc_rport_event event) | |
440 | { | |
441 | struct fcoe_port *port = lport_priv(lport); | |
aea71a02 BPG |
442 | struct bnx2fc_interface *interface = port->priv; |
443 | struct bnx2fc_hba *hba = interface->hba; | |
853e2bd2 BG |
444 | struct fc_rport *rport = rdata->rport; |
445 | struct fc_rport_libfc_priv *rp; | |
446 | struct bnx2fc_rport *tgt; | |
447 | u32 port_id; | |
448 | ||
449 | BNX2FC_HBA_DBG(lport, "rport_event_hdlr: event = %d, port_id = 0x%x\n", | |
450 | event, rdata->ids.port_id); | |
451 | switch (event) { | |
452 | case RPORT_EV_READY: | |
453 | if (!rport) { | |
b2a554ff | 454 | printk(KERN_ERR PFX "rport is NULL: ERROR!\n"); |
853e2bd2 BG |
455 | break; |
456 | } | |
457 | ||
458 | rp = rport->dd_data; | |
459 | if (rport->port_id == FC_FID_DIR_SERV) { | |
460 | /* | |
25985edc | 461 | * bnx2fc_rport structure doesn't exist for |
853e2bd2 BG |
462 | * directory server. |
463 | * We should not come here, as lport will | |
464 | * take care of fabric login | |
465 | */ | |
b2a554ff | 466 | printk(KERN_ERR PFX "%x - rport_event_handler ERROR\n", |
853e2bd2 BG |
467 | rdata->ids.port_id); |
468 | break; | |
469 | } | |
470 | ||
471 | if (rdata->spp_type != FC_TYPE_FCP) { | |
472 | BNX2FC_HBA_DBG(lport, "not FCP type target." | |
473 | " not offloading\n"); | |
474 | break; | |
475 | } | |
476 | if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) { | |
477 | BNX2FC_HBA_DBG(lport, "not FCP_TARGET" | |
478 | " not offloading\n"); | |
479 | break; | |
480 | } | |
481 | ||
482 | /* | |
483 | * Offlaod process is protected with hba mutex. | |
484 | * Use the same mutex_lock for upload process too | |
485 | */ | |
486 | mutex_lock(&hba->hba_mutex); | |
487 | tgt = (struct bnx2fc_rport *)&rp[1]; | |
488 | ||
489 | /* This can happen when ADISC finds the same target */ | |
e7f4fed5 | 490 | if (test_bit(BNX2FC_FLAG_ENABLED, &tgt->flags)) { |
853e2bd2 BG |
491 | BNX2FC_TGT_DBG(tgt, "already offloaded\n"); |
492 | mutex_unlock(&hba->hba_mutex); | |
493 | return; | |
494 | } | |
495 | ||
496 | /* | |
497 | * Offload the session. This is a blocking call, and will | |
498 | * wait until the session is offloaded. | |
499 | */ | |
500 | bnx2fc_offload_session(port, tgt, rdata); | |
501 | ||
502 | BNX2FC_TGT_DBG(tgt, "OFFLOAD num_ofld_sess = %d\n", | |
503 | hba->num_ofld_sess); | |
504 | ||
e7f4fed5 BPG |
505 | if (test_bit(BNX2FC_FLAG_ENABLED, &tgt->flags)) { |
506 | /* Session is offloaded and enabled. */ | |
853e2bd2 BG |
507 | BNX2FC_TGT_DBG(tgt, "sess offloaded\n"); |
508 | /* This counter is protected with hba mutex */ | |
509 | hba->num_ofld_sess++; | |
510 | ||
511 | set_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags); | |
512 | } else { | |
513 | /* | |
514 | * Offload or enable would have failed. | |
515 | * In offload/enable completion path, the | |
516 | * rport would have already been removed | |
517 | */ | |
518 | BNX2FC_TGT_DBG(tgt, "Port is being logged off as " | |
519 | "offloaded flag not set\n"); | |
520 | } | |
521 | mutex_unlock(&hba->hba_mutex); | |
522 | break; | |
523 | case RPORT_EV_LOGO: | |
524 | case RPORT_EV_FAILED: | |
525 | case RPORT_EV_STOP: | |
526 | port_id = rdata->ids.port_id; | |
527 | if (port_id == FC_FID_DIR_SERV) | |
528 | break; | |
529 | ||
530 | if (!rport) { | |
b2a554ff | 531 | printk(KERN_INFO PFX "%x - rport not created Yet!!\n", |
853e2bd2 BG |
532 | port_id); |
533 | break; | |
534 | } | |
535 | rp = rport->dd_data; | |
536 | mutex_lock(&hba->hba_mutex); | |
537 | /* | |
538 | * Perform session upload. Note that rdata->peers is already | |
539 | * removed from disc->rports list before we get this event. | |
540 | */ | |
541 | tgt = (struct bnx2fc_rport *)&rp[1]; | |
542 | ||
e7f4fed5 | 543 | if (!(test_bit(BNX2FC_FLAG_ENABLED, &tgt->flags))) { |
853e2bd2 BG |
544 | mutex_unlock(&hba->hba_mutex); |
545 | break; | |
546 | } | |
547 | clear_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags); | |
548 | ||
549 | bnx2fc_upload_session(port, tgt); | |
550 | hba->num_ofld_sess--; | |
551 | BNX2FC_TGT_DBG(tgt, "UPLOAD num_ofld_sess = %d\n", | |
552 | hba->num_ofld_sess); | |
553 | /* | |
554 | * Try to wake up the linkdown wait thread. If num_ofld_sess | |
555 | * is 0, the waiting therad wakes up | |
556 | */ | |
557 | if ((hba->wait_for_link_down) && | |
558 | (hba->num_ofld_sess == 0)) { | |
559 | wake_up_interruptible(&hba->shutdown_wait); | |
560 | } | |
561 | if (test_bit(BNX2FC_FLAG_EXPL_LOGO, &tgt->flags)) { | |
562 | printk(KERN_ERR PFX "Relogin to the tgt\n"); | |
563 | mutex_lock(&lport->disc.disc_mutex); | |
564 | lport->tt.rport_login(rdata); | |
565 | mutex_unlock(&lport->disc.disc_mutex); | |
566 | } | |
567 | mutex_unlock(&hba->hba_mutex); | |
568 | ||
569 | break; | |
570 | ||
571 | case RPORT_EV_NONE: | |
572 | break; | |
573 | } | |
574 | } | |
575 | ||
576 | /** | |
577 | * bnx2fc_tgt_lookup() - Lookup a bnx2fc_rport by port_id | |
578 | * | |
579 | * @port: fcoe_port struct to lookup the target port on | |
580 | * @port_id: The remote port ID to look up | |
581 | */ | |
582 | struct bnx2fc_rport *bnx2fc_tgt_lookup(struct fcoe_port *port, | |
583 | u32 port_id) | |
584 | { | |
aea71a02 BPG |
585 | struct bnx2fc_interface *interface = port->priv; |
586 | struct bnx2fc_hba *hba = interface->hba; | |
853e2bd2 BG |
587 | struct bnx2fc_rport *tgt; |
588 | struct fc_rport_priv *rdata; | |
589 | int i; | |
590 | ||
591 | for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) { | |
592 | tgt = hba->tgt_ofld_list[i]; | |
593 | if ((tgt) && (tgt->port == port)) { | |
594 | rdata = tgt->rdata; | |
595 | if (rdata->ids.port_id == port_id) { | |
596 | if (rdata->rp_state != RPORT_ST_DELETE) { | |
597 | BNX2FC_TGT_DBG(tgt, "rport " | |
598 | "obtained\n"); | |
599 | return tgt; | |
600 | } else { | |
aea71a02 | 601 | BNX2FC_TGT_DBG(tgt, "rport 0x%x " |
853e2bd2 BG |
602 | "is in DELETED state\n", |
603 | rdata->ids.port_id); | |
604 | return NULL; | |
605 | } | |
606 | } | |
607 | } | |
608 | } | |
609 | return NULL; | |
610 | } | |
611 | ||
612 | ||
613 | /** | |
614 | * bnx2fc_alloc_conn_id - allocates FCOE Connection id | |
615 | * | |
616 | * @hba: pointer to adapter structure | |
617 | * @tgt: pointer to bnx2fc_rport structure | |
618 | */ | |
619 | static u32 bnx2fc_alloc_conn_id(struct bnx2fc_hba *hba, | |
620 | struct bnx2fc_rport *tgt) | |
621 | { | |
622 | u32 conn_id, next; | |
623 | ||
624 | /* called with hba mutex held */ | |
625 | ||
626 | /* | |
627 | * tgt_ofld_list access is synchronized using | |
628 | * both hba mutex and hba lock. Atleast hba mutex or | |
629 | * hba lock needs to be held for read access. | |
630 | */ | |
631 | ||
632 | spin_lock_bh(&hba->hba_lock); | |
633 | next = hba->next_conn_id; | |
634 | conn_id = hba->next_conn_id++; | |
635 | if (hba->next_conn_id == BNX2FC_NUM_MAX_SESS) | |
636 | hba->next_conn_id = 0; | |
637 | ||
638 | while (hba->tgt_ofld_list[conn_id] != NULL) { | |
639 | conn_id++; | |
640 | if (conn_id == BNX2FC_NUM_MAX_SESS) | |
641 | conn_id = 0; | |
642 | ||
643 | if (conn_id == next) { | |
644 | /* No free conn_ids are available */ | |
645 | spin_unlock_bh(&hba->hba_lock); | |
646 | return -1; | |
647 | } | |
648 | } | |
649 | hba->tgt_ofld_list[conn_id] = tgt; | |
650 | tgt->fcoe_conn_id = conn_id; | |
651 | spin_unlock_bh(&hba->hba_lock); | |
652 | return conn_id; | |
653 | } | |
654 | ||
655 | static void bnx2fc_free_conn_id(struct bnx2fc_hba *hba, u32 conn_id) | |
656 | { | |
657 | /* called with hba mutex held */ | |
658 | spin_lock_bh(&hba->hba_lock); | |
659 | hba->tgt_ofld_list[conn_id] = NULL; | |
853e2bd2 BG |
660 | spin_unlock_bh(&hba->hba_lock); |
661 | } | |
662 | ||
663 | /** | |
664 | *bnx2fc_alloc_session_resc - Allocate qp resources for the session | |
665 | * | |
666 | */ | |
667 | static int bnx2fc_alloc_session_resc(struct bnx2fc_hba *hba, | |
668 | struct bnx2fc_rport *tgt) | |
669 | { | |
670 | dma_addr_t page; | |
671 | int num_pages; | |
672 | u32 *pbl; | |
673 | ||
674 | /* Allocate and map SQ */ | |
675 | tgt->sq_mem_size = tgt->max_sqes * BNX2FC_SQ_WQE_SIZE; | |
676 | tgt->sq_mem_size = (tgt->sq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; | |
677 | ||
678 | tgt->sq = dma_alloc_coherent(&hba->pcidev->dev, tgt->sq_mem_size, | |
679 | &tgt->sq_dma, GFP_KERNEL); | |
680 | if (!tgt->sq) { | |
b2a554ff | 681 | printk(KERN_ERR PFX "unable to allocate SQ memory %d\n", |
853e2bd2 BG |
682 | tgt->sq_mem_size); |
683 | goto mem_alloc_failure; | |
684 | } | |
685 | memset(tgt->sq, 0, tgt->sq_mem_size); | |
686 | ||
687 | /* Allocate and map CQ */ | |
688 | tgt->cq_mem_size = tgt->max_cqes * BNX2FC_CQ_WQE_SIZE; | |
689 | tgt->cq_mem_size = (tgt->cq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; | |
690 | ||
691 | tgt->cq = dma_alloc_coherent(&hba->pcidev->dev, tgt->cq_mem_size, | |
692 | &tgt->cq_dma, GFP_KERNEL); | |
693 | if (!tgt->cq) { | |
b2a554ff | 694 | printk(KERN_ERR PFX "unable to allocate CQ memory %d\n", |
853e2bd2 BG |
695 | tgt->cq_mem_size); |
696 | goto mem_alloc_failure; | |
697 | } | |
698 | memset(tgt->cq, 0, tgt->cq_mem_size); | |
699 | ||
700 | /* Allocate and map RQ and RQ PBL */ | |
701 | tgt->rq_mem_size = tgt->max_rqes * BNX2FC_RQ_WQE_SIZE; | |
702 | tgt->rq_mem_size = (tgt->rq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; | |
703 | ||
704 | tgt->rq = dma_alloc_coherent(&hba->pcidev->dev, tgt->rq_mem_size, | |
705 | &tgt->rq_dma, GFP_KERNEL); | |
706 | if (!tgt->rq) { | |
b2a554ff | 707 | printk(KERN_ERR PFX "unable to allocate RQ memory %d\n", |
853e2bd2 BG |
708 | tgt->rq_mem_size); |
709 | goto mem_alloc_failure; | |
710 | } | |
711 | memset(tgt->rq, 0, tgt->rq_mem_size); | |
712 | ||
713 | tgt->rq_pbl_size = (tgt->rq_mem_size / PAGE_SIZE) * sizeof(void *); | |
714 | tgt->rq_pbl_size = (tgt->rq_pbl_size + (PAGE_SIZE - 1)) & PAGE_MASK; | |
715 | ||
716 | tgt->rq_pbl = dma_alloc_coherent(&hba->pcidev->dev, tgt->rq_pbl_size, | |
717 | &tgt->rq_pbl_dma, GFP_KERNEL); | |
718 | if (!tgt->rq_pbl) { | |
b2a554ff | 719 | printk(KERN_ERR PFX "unable to allocate RQ PBL %d\n", |
853e2bd2 BG |
720 | tgt->rq_pbl_size); |
721 | goto mem_alloc_failure; | |
722 | } | |
723 | ||
724 | memset(tgt->rq_pbl, 0, tgt->rq_pbl_size); | |
725 | num_pages = tgt->rq_mem_size / PAGE_SIZE; | |
726 | page = tgt->rq_dma; | |
727 | pbl = (u32 *)tgt->rq_pbl; | |
728 | ||
729 | while (num_pages--) { | |
730 | *pbl = (u32)page; | |
731 | pbl++; | |
732 | *pbl = (u32)((u64)page >> 32); | |
733 | pbl++; | |
734 | page += PAGE_SIZE; | |
735 | } | |
736 | ||
737 | /* Allocate and map XFERQ */ | |
738 | tgt->xferq_mem_size = tgt->max_sqes * BNX2FC_XFERQ_WQE_SIZE; | |
739 | tgt->xferq_mem_size = (tgt->xferq_mem_size + (PAGE_SIZE - 1)) & | |
740 | PAGE_MASK; | |
741 | ||
742 | tgt->xferq = dma_alloc_coherent(&hba->pcidev->dev, tgt->xferq_mem_size, | |
743 | &tgt->xferq_dma, GFP_KERNEL); | |
744 | if (!tgt->xferq) { | |
b2a554ff | 745 | printk(KERN_ERR PFX "unable to allocate XFERQ %d\n", |
853e2bd2 BG |
746 | tgt->xferq_mem_size); |
747 | goto mem_alloc_failure; | |
748 | } | |
749 | memset(tgt->xferq, 0, tgt->xferq_mem_size); | |
750 | ||
751 | /* Allocate and map CONFQ & CONFQ PBL */ | |
752 | tgt->confq_mem_size = tgt->max_sqes * BNX2FC_CONFQ_WQE_SIZE; | |
753 | tgt->confq_mem_size = (tgt->confq_mem_size + (PAGE_SIZE - 1)) & | |
754 | PAGE_MASK; | |
755 | ||
756 | tgt->confq = dma_alloc_coherent(&hba->pcidev->dev, tgt->confq_mem_size, | |
757 | &tgt->confq_dma, GFP_KERNEL); | |
758 | if (!tgt->confq) { | |
b2a554ff | 759 | printk(KERN_ERR PFX "unable to allocate CONFQ %d\n", |
853e2bd2 BG |
760 | tgt->confq_mem_size); |
761 | goto mem_alloc_failure; | |
762 | } | |
763 | memset(tgt->confq, 0, tgt->confq_mem_size); | |
764 | ||
765 | tgt->confq_pbl_size = | |
766 | (tgt->confq_mem_size / PAGE_SIZE) * sizeof(void *); | |
767 | tgt->confq_pbl_size = | |
768 | (tgt->confq_pbl_size + (PAGE_SIZE - 1)) & PAGE_MASK; | |
769 | ||
770 | tgt->confq_pbl = dma_alloc_coherent(&hba->pcidev->dev, | |
771 | tgt->confq_pbl_size, | |
772 | &tgt->confq_pbl_dma, GFP_KERNEL); | |
773 | if (!tgt->confq_pbl) { | |
b2a554ff | 774 | printk(KERN_ERR PFX "unable to allocate CONFQ PBL %d\n", |
853e2bd2 BG |
775 | tgt->confq_pbl_size); |
776 | goto mem_alloc_failure; | |
777 | } | |
778 | ||
779 | memset(tgt->confq_pbl, 0, tgt->confq_pbl_size); | |
780 | num_pages = tgt->confq_mem_size / PAGE_SIZE; | |
781 | page = tgt->confq_dma; | |
782 | pbl = (u32 *)tgt->confq_pbl; | |
783 | ||
784 | while (num_pages--) { | |
785 | *pbl = (u32)page; | |
786 | pbl++; | |
787 | *pbl = (u32)((u64)page >> 32); | |
788 | pbl++; | |
789 | page += PAGE_SIZE; | |
790 | } | |
791 | ||
792 | /* Allocate and map ConnDB */ | |
793 | tgt->conn_db_mem_size = sizeof(struct fcoe_conn_db); | |
794 | ||
795 | tgt->conn_db = dma_alloc_coherent(&hba->pcidev->dev, | |
796 | tgt->conn_db_mem_size, | |
797 | &tgt->conn_db_dma, GFP_KERNEL); | |
798 | if (!tgt->conn_db) { | |
b2a554ff | 799 | printk(KERN_ERR PFX "unable to allocate conn_db %d\n", |
853e2bd2 BG |
800 | tgt->conn_db_mem_size); |
801 | goto mem_alloc_failure; | |
802 | } | |
803 | memset(tgt->conn_db, 0, tgt->conn_db_mem_size); | |
804 | ||
805 | ||
806 | /* Allocate and map LCQ */ | |
807 | tgt->lcq_mem_size = (tgt->max_sqes + 8) * BNX2FC_SQ_WQE_SIZE; | |
808 | tgt->lcq_mem_size = (tgt->lcq_mem_size + (PAGE_SIZE - 1)) & | |
809 | PAGE_MASK; | |
810 | ||
811 | tgt->lcq = dma_alloc_coherent(&hba->pcidev->dev, tgt->lcq_mem_size, | |
812 | &tgt->lcq_dma, GFP_KERNEL); | |
813 | ||
814 | if (!tgt->lcq) { | |
b2a554ff | 815 | printk(KERN_ERR PFX "unable to allocate lcq %d\n", |
853e2bd2 BG |
816 | tgt->lcq_mem_size); |
817 | goto mem_alloc_failure; | |
818 | } | |
819 | memset(tgt->lcq, 0, tgt->lcq_mem_size); | |
820 | ||
853e2bd2 BG |
821 | tgt->conn_db->rq_prod = 0x8000; |
822 | ||
823 | return 0; | |
824 | ||
825 | mem_alloc_failure: | |
853e2bd2 BG |
826 | return -ENOMEM; |
827 | } | |
828 | ||
829 | /** | |
830 | * bnx2i_free_session_resc - free qp resources for the session | |
831 | * | |
832 | * @hba: adapter structure pointer | |
833 | * @tgt: bnx2fc_rport structure pointer | |
834 | * | |
835 | * Free QP resources - SQ/RQ/CQ/XFERQ memory and PBL | |
836 | */ | |
837 | static void bnx2fc_free_session_resc(struct bnx2fc_hba *hba, | |
838 | struct bnx2fc_rport *tgt) | |
839 | { | |
b338c785 | 840 | void __iomem *ctx_base_ptr; |
853e2bd2 | 841 | |
b338c785 | 842 | BNX2FC_TGT_DBG(tgt, "Freeing up session resources\n"); |
619c5cb6 VZ |
843 | |
844 | spin_lock_bh(&tgt->cq_lock); | |
b338c785 BPG |
845 | ctx_base_ptr = tgt->ctx_base; |
846 | tgt->ctx_base = NULL; | |
847 | ||
853e2bd2 BG |
848 | /* Free LCQ */ |
849 | if (tgt->lcq) { | |
850 | dma_free_coherent(&hba->pcidev->dev, tgt->lcq_mem_size, | |
851 | tgt->lcq, tgt->lcq_dma); | |
852 | tgt->lcq = NULL; | |
853 | } | |
854 | /* Free connDB */ | |
855 | if (tgt->conn_db) { | |
856 | dma_free_coherent(&hba->pcidev->dev, tgt->conn_db_mem_size, | |
857 | tgt->conn_db, tgt->conn_db_dma); | |
858 | tgt->conn_db = NULL; | |
859 | } | |
860 | /* Free confq and confq pbl */ | |
861 | if (tgt->confq_pbl) { | |
862 | dma_free_coherent(&hba->pcidev->dev, tgt->confq_pbl_size, | |
863 | tgt->confq_pbl, tgt->confq_pbl_dma); | |
864 | tgt->confq_pbl = NULL; | |
865 | } | |
866 | if (tgt->confq) { | |
867 | dma_free_coherent(&hba->pcidev->dev, tgt->confq_mem_size, | |
868 | tgt->confq, tgt->confq_dma); | |
869 | tgt->confq = NULL; | |
870 | } | |
871 | /* Free XFERQ */ | |
872 | if (tgt->xferq) { | |
873 | dma_free_coherent(&hba->pcidev->dev, tgt->xferq_mem_size, | |
874 | tgt->xferq, tgt->xferq_dma); | |
875 | tgt->xferq = NULL; | |
876 | } | |
877 | /* Free RQ PBL and RQ */ | |
878 | if (tgt->rq_pbl) { | |
879 | dma_free_coherent(&hba->pcidev->dev, tgt->rq_pbl_size, | |
880 | tgt->rq_pbl, tgt->rq_pbl_dma); | |
881 | tgt->rq_pbl = NULL; | |
882 | } | |
883 | if (tgt->rq) { | |
884 | dma_free_coherent(&hba->pcidev->dev, tgt->rq_mem_size, | |
885 | tgt->rq, tgt->rq_dma); | |
886 | tgt->rq = NULL; | |
887 | } | |
888 | /* Free CQ */ | |
889 | if (tgt->cq) { | |
890 | dma_free_coherent(&hba->pcidev->dev, tgt->cq_mem_size, | |
891 | tgt->cq, tgt->cq_dma); | |
892 | tgt->cq = NULL; | |
893 | } | |
894 | /* Free SQ */ | |
895 | if (tgt->sq) { | |
896 | dma_free_coherent(&hba->pcidev->dev, tgt->sq_mem_size, | |
897 | tgt->sq, tgt->sq_dma); | |
898 | tgt->sq = NULL; | |
899 | } | |
619c5cb6 | 900 | spin_unlock_bh(&tgt->cq_lock); |
b338c785 BPG |
901 | |
902 | if (ctx_base_ptr) | |
903 | iounmap(ctx_base_ptr); | |
853e2bd2 | 904 | } |