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