/drivers/scsi/bnx2fc/bnx2fc_tgt.c

https://bitbucket.org/cyanogenmod/android_kernel_asus_tf300t · C · 871 lines · 604 code · 120 blank · 147 comment · 85 complexity · 135b64068112bb10259adc5f2d12f49c MD5 · raw file 

    

  1. /* bnx2fc_tgt.c: Broadcom NetXtreme II Linux FCoE offload driver.
    2. 

  2.  * Handles operations such as session offload/upload etc, and manages
    3. 

  3.  * session resources such as connection id and qp resources.
    4. 

  4.  *
    5. 

  5.  * Copyright (c) 2008 - 2011 Broadcom Corporation
    6. 

  6.  *
    7. 

  7.  * This program is free software; you can redistribute it and/or modify
    8. 

  8.  * it under the terms of the GNU General Public License as published by
    9. 

  9.  * the Free Software Foundation.
    10. 

  10.  *
    11. 

  11.  * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
    12. 

  12.  */
    13. 

  13. 

  14. #include "bnx2fc.h"
    15. 

  15. static void bnx2fc_upld_timer(unsigned long data);
    16. 

  16. static void bnx2fc_ofld_timer(unsigned long data);
    17. 

  17. static int bnx2fc_init_tgt(struct bnx2fc_rport *tgt,
    18. 

  18. 			   struct fcoe_port *port,
    19. 

  19. 			   struct fc_rport_priv *rdata);
    20. 

  20. static u32 bnx2fc_alloc_conn_id(struct bnx2fc_hba *hba,
    21. 

  21. 				struct bnx2fc_rport *tgt);
    22. 

  22. static int bnx2fc_alloc_session_resc(struct bnx2fc_hba *hba,
    23. 

  23. 			      struct bnx2fc_rport *tgt);
    24. 

  24. static void bnx2fc_free_session_resc(struct bnx2fc_hba *hba,
    25. 

  25. 			      struct bnx2fc_rport *tgt);
    26. 

  26. static void bnx2fc_free_conn_id(struct bnx2fc_hba *hba, u32 conn_id);
    27. 

  27. 

  28. static void bnx2fc_upld_timer(unsigned long data)
    29. 

  29. {
    30. 

  30. 

  31. 	struct bnx2fc_rport *tgt = (struct bnx2fc_rport *)data;
    32. 

  32. 

  33. 	BNX2FC_TGT_DBG(tgt, "upld_timer - Upload compl not received!!\n");
    34. 

  34. 	/* fake upload completion */
    35. 

  35. 	clear_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags);
    36. 

  36. 	set_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
    37. 

  37. 	wake_up_interruptible(&tgt->upld_wait);
    38. 

  38. }
    39. 

  39. 

  40. static void bnx2fc_ofld_timer(unsigned long data)
    41. 

  41. {
    42. 

  42. 

  43. 	struct bnx2fc_rport *tgt = (struct bnx2fc_rport *)data;
    44. 

  44. 

  45. 	BNX2FC_TGT_DBG(tgt, "entered bnx2fc_ofld_timer\n");
    46. 

  46. 	/* NOTE: This function should never be called, as
    47. 

  47. 	 * offload should never timeout
    48. 

  48. 	 */
    49. 

  49. 	/*
    50. 

  50. 	 * If the timer has expired, this session is dead
    51. 

  51. 	 * Clear offloaded flag and logout of this device.
    52. 

  52. 	 * Since OFFLOADED flag is cleared, this case
    53. 

  53. 	 * will be considered as offload error and the
    54. 

  54. 	 * port will be logged off, and conn_id, session
    55. 

  55. 	 * resources are freed up in bnx2fc_offload_session
    56. 

  56. 	 */
    57. 

  57. 	clear_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags);
    58. 

  58. 	set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
    59. 

  59. 	wake_up_interruptible(&tgt->ofld_wait);
    60. 

  60. }
    61. 

  61. 

  62. static void bnx2fc_offload_session(struct fcoe_port *port,
    63. 

  63. 					struct bnx2fc_rport *tgt,
    64. 

  64. 					struct fc_rport_priv *rdata)
    65. 

  65. {
    66. 

  66. 	struct fc_lport *lport = rdata->local_port;
    67. 

  67. 	struct fc_rport *rport = rdata->rport;
    68. 

  68. 	struct bnx2fc_interface *interface = port->priv;
    69. 

  69. 	struct bnx2fc_hba *hba = interface->hba;
    70. 

  70. 	int rval;
    71. 

  71. 	int i = 0;
    72. 

  72. 

  73. 	/* Initialize bnx2fc_rport */
    74. 

  74. 	/* NOTE: tgt is already bzero'd */
    75. 

  75. 	rval = bnx2fc_init_tgt(tgt, port, rdata);
    76. 

  76. 	if (rval) {
    77. 

  77. 		printk(KERN_ERR PFX "Failed to allocate conn id for "
    78. 

  78. 			"port_id (%6x)\n", rport->port_id);
    79. 

  79. 		goto ofld_err;
    80. 

  80. 	}
    81. 

  81. 

  82. 	/* Allocate session resources */
    83. 

  83. 	rval = bnx2fc_alloc_session_resc(hba, tgt);
    84. 

  84. 	if (rval) {
    85. 

  85. 		printk(KERN_ERR PFX "Failed to allocate resources\n");
    86. 

  86. 		goto ofld_err;
    87. 

  87. 	}
    88. 

  88. 

  89. 	/*
    90. 

  90. 	 * Initialize FCoE session offload process.
    91. 

  91. 	 * Upon completion of offload process add
    92. 

  92. 	 * rport to list of rports
    93. 

  93. 	 */
    94. 

  94. retry_ofld:
    95. 

  95. 	clear_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
    96. 

  96. 	rval = bnx2fc_send_session_ofld_req(port, tgt);
    97. 

  97. 	if (rval) {
    98. 

  98. 		printk(KERN_ERR PFX "ofld_req failed\n");
    99. 

  99. 		goto ofld_err;
    100. 

  100. 	}
    101. 

  101. 

  102. 	/*
    103. 

  103. 	 * wait for the session is offloaded and enabled. 3 Secs
    104. 

  104. 	 * should be ample time for this process to complete.
    105. 

  105. 	 */
    106. 

  106. 	setup_timer(&tgt->ofld_timer, bnx2fc_ofld_timer, (unsigned long)tgt);
    107. 

  107. 	mod_timer(&tgt->ofld_timer, jiffies + BNX2FC_FW_TIMEOUT);
    108. 

  108. 

  109. 	wait_event_interruptible(tgt->ofld_wait,
    110. 

  110. 				 (test_bit(
    111. 

  111. 				  BNX2FC_FLAG_OFLD_REQ_CMPL,
    112. 

  112. 				  &tgt->flags)));
    113. 

  113. 	if (signal_pending(current))
    114. 

  114. 		flush_signals(current);
    115. 

  115. 

  116. 	del_timer_sync(&tgt->ofld_timer);
    117. 

  117. 

  118. 	if (!(test_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags))) {
    119. 

  119. 		if (test_and_clear_bit(BNX2FC_FLAG_CTX_ALLOC_FAILURE,
    120. 

  120. 				       &tgt->flags)) {
    121. 

  121. 			BNX2FC_TGT_DBG(tgt, "ctx_alloc_failure, "
    122. 

  122. 				"retry ofld..%d\n", i++);
    123. 

  123. 			msleep_interruptible(1000);
    124. 

  124. 			if (i > 3) {
    125. 

  125. 				i = 0;
    126. 

  126. 				goto ofld_err;
    127. 

  127. 			}
    128. 

  128. 			goto retry_ofld;
    129. 

  129. 		}
    130. 

  130. 		goto ofld_err;
    131. 

  131. 	}
    132. 

  132. 	if (bnx2fc_map_doorbell(tgt)) {
    133. 

  133. 		printk(KERN_ERR PFX "map doorbell failed - no mem\n");
    134. 

  134. 		/* upload will take care of cleaning up sess resc */
    135. 

  135. 		lport->tt.rport_logoff(rdata);
    136. 

  136. 	}
    137. 

  137. 	/* Arm CQ */
    138. 

  138. 	bnx2fc_arm_cq(tgt);
    139. 

  139. 	return;
    140. 

  140. 

  141. ofld_err:
    142. 

  142. 	/* couldn't offload the session. log off from this rport */
    143. 

  143. 	BNX2FC_TGT_DBG(tgt, "bnx2fc_offload_session - offload error\n");
    144. 

  144. 	lport->tt.rport_logoff(rdata);
    145. 

  145. 	/* Free session resources */
    146. 

  146. 	bnx2fc_free_session_resc(hba, tgt);
    147. 

  147. 	if (tgt->fcoe_conn_id != -1)
    148. 

  148. 		bnx2fc_free_conn_id(hba, tgt->fcoe_conn_id);
    149. 

  149. }
    150. 

  150. 

  151. void bnx2fc_flush_active_ios(struct bnx2fc_rport *tgt)
    152. 

  152. {
    153. 

  153. 	struct bnx2fc_cmd *io_req;
    154. 

  154. 	struct list_head *list;
    155. 

  155. 	struct list_head *tmp;
    156. 

  156. 	int rc;
    157. 

  157. 	int i = 0;
    158. 

  158. 	BNX2FC_TGT_DBG(tgt, "Entered flush_active_ios - %d\n",
    159. 

  159. 		       tgt->num_active_ios.counter);
    160. 

  160. 

  161. 	spin_lock_bh(&tgt->tgt_lock);
    162. 

  162. 	tgt->flush_in_prog = 1;
    163. 

  163. 

  164. 	list_for_each_safe(list, tmp, &tgt->active_cmd_queue) {
    165. 

  165. 		i++;
    166. 

  166. 		io_req = (struct bnx2fc_cmd *)list;
    167. 

  167. 		list_del_init(&io_req->link);
    168. 

  168. 		io_req->on_active_queue = 0;
    169. 

  169. 		BNX2FC_IO_DBG(io_req, "cmd_queue cleanup\n");
    170. 

  170. 

  171. 		if (cancel_delayed_work(&io_req->timeout_work)) {
    172. 

  172. 			if (test_and_clear_bit(BNX2FC_FLAG_EH_ABORT,
    173. 

  173. 						&io_req->req_flags)) {
    174. 

  174. 				/* Handle eh_abort timeout */
    175. 

  175. 				BNX2FC_IO_DBG(io_req, "eh_abort for IO "
    176. 

  176. 					      "cleaned up\n");
    177. 

  177. 				complete(&io_req->tm_done);
    178. 

  178. 			}
    179. 

  179. 			kref_put(&io_req->refcount,
    180. 

  180. 				 bnx2fc_cmd_release); /* drop timer hold */
    181. 

  181. 		}
    182. 

  182. 

  183. 		set_bit(BNX2FC_FLAG_IO_COMPL, &io_req->req_flags);
    184. 

  184. 		set_bit(BNX2FC_FLAG_IO_CLEANUP, &io_req->req_flags);
    185. 

  185. 		rc = bnx2fc_initiate_cleanup(io_req);
    186. 

  186. 		BUG_ON(rc);
    187. 

  187. 	}
    188. 

  188. 

  189. 	list_for_each_safe(list, tmp, &tgt->els_queue) {
    190. 

  190. 		i++;
    191. 

  191. 		io_req = (struct bnx2fc_cmd *)list;
    192. 

  192. 		list_del_init(&io_req->link);
    193. 

  193. 		io_req->on_active_queue = 0;
    194. 

  194. 

  195. 		BNX2FC_IO_DBG(io_req, "els_queue cleanup\n");
    196. 

  196. 

  197. 		if (cancel_delayed_work(&io_req->timeout_work))
    198. 

  198. 			kref_put(&io_req->refcount,
    199. 

  199. 				 bnx2fc_cmd_release); /* drop timer hold */
    200. 

  200. 

  201. 		if ((io_req->cb_func) && (io_req->cb_arg)) {
    202. 

  202. 			io_req->cb_func(io_req->cb_arg);
    203. 

  203. 			io_req->cb_arg = NULL;
    204. 

  204. 		}
    205. 

  205. 

  206. 		rc = bnx2fc_initiate_cleanup(io_req);
    207. 

  207. 		BUG_ON(rc);
    208. 

  208. 	}
    209. 

  209. 

  210. 	list_for_each_safe(list, tmp, &tgt->io_retire_queue) {
    211. 

  211. 		i++;
    212. 

  212. 		io_req = (struct bnx2fc_cmd *)list;
    213. 

  213. 		list_del_init(&io_req->link);
    214. 

  214. 

  215. 		BNX2FC_IO_DBG(io_req, "retire_queue flush\n");
    216. 

  216. 

  217. 		if (cancel_delayed_work(&io_req->timeout_work))
    218. 

  218. 			kref_put(&io_req->refcount, bnx2fc_cmd_release);
    219. 

  219. 

  220. 		clear_bit(BNX2FC_FLAG_ISSUE_RRQ, &io_req->req_flags);
    221. 

  221. 	}
    222. 

  222. 

  223. 	BNX2FC_TGT_DBG(tgt, "IOs flushed = %d\n", i);
    224. 

  224. 	i = 0;
    225. 

  225. 	spin_unlock_bh(&tgt->tgt_lock);
    226. 

  226. 	/* wait for active_ios to go to 0 */
    227. 

  227. 	while ((tgt->num_active_ios.counter != 0) && (i++ < BNX2FC_WAIT_CNT))
    228. 

  228. 		msleep(25);
    229. 

  229. 	if (tgt->num_active_ios.counter != 0)
    230. 

  230. 		printk(KERN_ERR PFX "CLEANUP on port 0x%x:"
    231. 

  231. 				    " active_ios = %d\n",
    232. 

  232. 			tgt->rdata->ids.port_id, tgt->num_active_ios.counter);
    233. 

  233. 	spin_lock_bh(&tgt->tgt_lock);
    234. 

  234. 	tgt->flush_in_prog = 0;
    235. 

  235. 	spin_unlock_bh(&tgt->tgt_lock);
    236. 

  236. }
    237. 

  237. 

  238. static void bnx2fc_upload_session(struct fcoe_port *port,
    239. 

  239. 					struct bnx2fc_rport *tgt)
    240. 

  240. {
    241. 

  241. 	struct bnx2fc_interface *interface = port->priv;
    242. 

  242. 	struct bnx2fc_hba *hba = interface->hba;
    243. 

  243. 

  244. 	BNX2FC_TGT_DBG(tgt, "upload_session: active_ios = %d\n",
    245. 

  245. 		tgt->num_active_ios.counter);
    246. 

  246. 

  247. 	/*
    248. 

  248. 	 * Called with hba->hba_mutex held.
    249. 

  249. 	 * This is a blocking call
    250. 

  250. 	 */
    251. 

  251. 	clear_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
    252. 

  252. 	bnx2fc_send_session_disable_req(port, tgt);
    253. 

  253. 

  254. 	/*
    255. 

  255. 	 * wait for upload to complete. 3 Secs
    256. 

  256. 	 * should be sufficient time for this process to complete.
    257. 

  257. 	 */
    258. 

  258. 	setup_timer(&tgt->upld_timer, bnx2fc_upld_timer, (unsigned long)tgt);
    259. 

  259. 	mod_timer(&tgt->upld_timer, jiffies + BNX2FC_FW_TIMEOUT);
    260. 

  260. 

  261. 	BNX2FC_TGT_DBG(tgt, "waiting for disable compl\n");
    262. 

  262. 	wait_event_interruptible(tgt->upld_wait,
    263. 

  263. 				 (test_bit(
    264. 

  264. 				  BNX2FC_FLAG_UPLD_REQ_COMPL,
    265. 

  265. 				  &tgt->flags)));
    266. 

  266. 

  267. 	if (signal_pending(current))
    268. 

  268. 		flush_signals(current);
    269. 

  269. 

  270. 	del_timer_sync(&tgt->upld_timer);
    271. 

  271. 

  272. 	/*
    273. 

  273. 	 * traverse thru the active_q and tmf_q and cleanup
    274. 

  274. 	 * IOs in these lists
    275. 

  275. 	 */
    276. 

  276. 	BNX2FC_TGT_DBG(tgt, "flush/upload - disable wait flags = 0x%lx\n",
    277. 

  277. 		       tgt->flags);
    278. 

  278. 	bnx2fc_flush_active_ios(tgt);
    279. 

  279. 

  280. 	/* Issue destroy KWQE */
    281. 

  281. 	if (test_bit(BNX2FC_FLAG_DISABLED, &tgt->flags)) {
    282. 

  282. 		BNX2FC_TGT_DBG(tgt, "send destroy req\n");
    283. 

  283. 		clear_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
    284. 

  284. 		bnx2fc_send_session_destroy_req(hba, tgt);
    285. 

  285. 

  286. 		/* wait for destroy to complete */
    287. 

  287. 		setup_timer(&tgt->upld_timer,
    288. 

  288. 			    bnx2fc_upld_timer, (unsigned long)tgt);
    289. 

  289. 		mod_timer(&tgt->upld_timer, jiffies + BNX2FC_FW_TIMEOUT);
    290. 

  290. 

  291. 		wait_event_interruptible(tgt->upld_wait,
    292. 

  292. 					 (test_bit(
    293. 

  293. 					  BNX2FC_FLAG_UPLD_REQ_COMPL,
    294. 

  294. 					  &tgt->flags)));
    295. 

  295. 

  296. 		if (!(test_bit(BNX2FC_FLAG_DESTROYED, &tgt->flags)))
    297. 

  297. 			printk(KERN_ERR PFX "ERROR!! destroy timed out\n");
    298. 

  298. 

  299. 		BNX2FC_TGT_DBG(tgt, "destroy wait complete flags = 0x%lx\n",
    300. 

  300. 			tgt->flags);
    301. 

  301. 		if (signal_pending(current))
    302. 

  302. 			flush_signals(current);
    303. 

  303. 

  304. 		del_timer_sync(&tgt->upld_timer);
    305. 

  305. 

  306. 	} else
    307. 

  307. 		printk(KERN_ERR PFX "ERROR!! DISABLE req timed out, destroy"
    308. 

  308. 				" not sent to FW\n");
    309. 

  309. 

  310. 	/* Free session resources */
    311. 

  311. 	bnx2fc_free_session_resc(hba, tgt);
    312. 

  312. 	bnx2fc_free_conn_id(hba, tgt->fcoe_conn_id);
    313. 

  313. }
    314. 

  314. 

  315. static int bnx2fc_init_tgt(struct bnx2fc_rport *tgt,
    316. 

  316. 			   struct fcoe_port *port,
    317. 

  317. 			   struct fc_rport_priv *rdata)
    318. 

  318. {
    319. 

  319. 

  320. 	struct fc_rport *rport = rdata->rport;
    321. 

  321. 	struct bnx2fc_interface *interface = port->priv;
    322. 

  322. 	struct bnx2fc_hba *hba = interface->hba;
    323. 

  323. 	struct b577xx_doorbell_set_prod *sq_db = &tgt->sq_db;
    324. 

  324. 	struct b577xx_fcoe_rx_doorbell *rx_db = &tgt->rx_db;
    325. 

  325. 

  326. 	tgt->rport = rport;
    327. 

  327. 	tgt->rdata = rdata;
    328. 

  328. 	tgt->port = port;
    329. 

  329. 

  330. 	if (hba->num_ofld_sess >= BNX2FC_NUM_MAX_SESS) {
    331. 

  331. 		BNX2FC_TGT_DBG(tgt, "exceeded max sessions. logoff this tgt\n");
    332. 

  332. 		tgt->fcoe_conn_id = -1;
    333. 

  333. 		return -1;
    334. 

  334. 	}
    335. 

  335. 

  336. 	tgt->fcoe_conn_id = bnx2fc_alloc_conn_id(hba, tgt);
    337. 

  337. 	if (tgt->fcoe_conn_id == -1)
    338. 

  338. 		return -1;
    339. 

  339. 

  340. 	BNX2FC_TGT_DBG(tgt, "init_tgt - conn_id = 0x%x\n", tgt->fcoe_conn_id);
    341. 

  341. 

  342. 	tgt->max_sqes = BNX2FC_SQ_WQES_MAX;
    343. 

  343. 	tgt->max_rqes = BNX2FC_RQ_WQES_MAX;
    344. 

  344. 	tgt->max_cqes = BNX2FC_CQ_WQES_MAX;
    345. 

  345. 	atomic_set(&tgt->free_sqes, BNX2FC_SQ_WQES_MAX);
    346. 

  346. 

  347. 	/* Initialize the toggle bit */
    348. 

  348. 	tgt->sq_curr_toggle_bit = 1;
    349. 

  349. 	tgt->cq_curr_toggle_bit = 1;
    350. 

  350. 	tgt->sq_prod_idx = 0;
    351. 

  351. 	tgt->cq_cons_idx = 0;
    352. 

  352. 	tgt->rq_prod_idx = 0x8000;
    353. 

  353. 	tgt->rq_cons_idx = 0;
    354. 

  354. 	atomic_set(&tgt->num_active_ios, 0);
    355. 

  355. 

  356. 	if (rdata->flags & FC_RP_FLAGS_RETRY) {
    357. 

  357. 		tgt->dev_type = TYPE_TAPE;
    358. 

  358. 		tgt->io_timeout = 0; /* use default ULP timeout */
    359. 

  359. 	} else {
    360. 

  360. 		tgt->dev_type = TYPE_DISK;
    361. 

  361. 		tgt->io_timeout = BNX2FC_IO_TIMEOUT;
    362. 

  362. 	}
    363. 

  363. 

  364. 	/* initialize sq doorbell */
    365. 

  365. 	sq_db->header.header = B577XX_DOORBELL_HDR_DB_TYPE;
    366. 

  366. 	sq_db->header.header |= B577XX_FCOE_CONNECTION_TYPE <<
    367. 

  367. 					B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT;
    368. 

  368. 	/* initialize rx doorbell */
    369. 

  369. 	rx_db->hdr.header = ((0x1 << B577XX_DOORBELL_HDR_RX_SHIFT) |
    370. 

  370. 			  (0x1 << B577XX_DOORBELL_HDR_DB_TYPE_SHIFT) |
    371. 

  371. 			  (B577XX_FCOE_CONNECTION_TYPE <<
    372. 

  372. 				B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT));
    373. 

  373. 	rx_db->params = (0x2 << B577XX_FCOE_RX_DOORBELL_NEGATIVE_ARM_SHIFT) |
    374. 

  374. 		     (0x3 << B577XX_FCOE_RX_DOORBELL_OPCODE_SHIFT);
    375. 

  375. 

  376. 	spin_lock_init(&tgt->tgt_lock);
    377. 

  377. 	spin_lock_init(&tgt->cq_lock);
    378. 

  378. 

  379. 	/* Initialize active_cmd_queue list */
    380. 

  380. 	INIT_LIST_HEAD(&tgt->active_cmd_queue);
    381. 

  381. 

  382. 	/* Initialize IO retire queue */
    383. 

  383. 	INIT_LIST_HEAD(&tgt->io_retire_queue);
    384. 

  384. 

  385. 	INIT_LIST_HEAD(&tgt->els_queue);
    386. 

  386. 

  387. 	/* Initialize active_tm_queue list */
    388. 

  388. 	INIT_LIST_HEAD(&tgt->active_tm_queue);
    389. 

  389. 

  390. 	init_waitqueue_head(&tgt->ofld_wait);
    391. 

  391. 	init_waitqueue_head(&tgt->upld_wait);
    392. 

  392. 

  393. 	return 0;
    394. 

  394. }
    395. 

  395. 

  396. /**
    397. 

  397.  * This event_callback is called after successful completion of libfc
    398. 

  398.  * initiated target login. bnx2fc can proceed with initiating the session
    399. 

  399.  * establishment.
    400. 

  400.  */
    401. 

  401. void bnx2fc_rport_event_handler(struct fc_lport *lport,
    402. 

  402. 				struct fc_rport_priv *rdata,
    403. 

  403. 				enum fc_rport_event event)
    404. 

  404. {
    405. 

  405. 	struct fcoe_port *port = lport_priv(lport);
    406. 

  406. 	struct bnx2fc_interface *interface = port->priv;
    407. 

  407. 	struct bnx2fc_hba *hba = interface->hba;
    408. 

  408. 	struct fc_rport *rport = rdata->rport;
    409. 

  409. 	struct fc_rport_libfc_priv *rp;
    410. 

  410. 	struct bnx2fc_rport *tgt;
    411. 

  411. 	u32 port_id;
    412. 

  412. 

  413. 	BNX2FC_HBA_DBG(lport, "rport_event_hdlr: event = %d, port_id = 0x%x\n",
    414. 

  414. 		event, rdata->ids.port_id);
    415. 

  415. 	switch (event) {
    416. 

  416. 	case RPORT_EV_READY:
    417. 

  417. 		if (!rport) {
    418. 

  418. 			printk(KERN_ERR PFX "rport is NULL: ERROR!\n");
    419. 

  419. 			break;
    420. 

  420. 		}
    421. 

  421. 

  422. 		rp = rport->dd_data;
    423. 

  423. 		if (rport->port_id == FC_FID_DIR_SERV) {
    424. 

  424. 			/*
    425. 

  425. 			 * bnx2fc_rport structure doesn't exist for
    426. 

  426. 			 * directory server.
    427. 

  427. 			 * We should not come here, as lport will
    428. 

  428. 			 * take care of fabric login
    429. 

  429. 			 */
    430. 

  430. 			printk(KERN_ERR PFX "%x - rport_event_handler ERROR\n",
    431. 

  431. 				rdata->ids.port_id);
    432. 

  432. 			break;
    433. 

  433. 		}
    434. 

  434. 

  435. 		if (rdata->spp_type != FC_TYPE_FCP) {
    436. 

  436. 			BNX2FC_HBA_DBG(lport, "not FCP type target."
    437. 

  437. 				   " not offloading\n");
    438. 

  438. 			break;
    439. 

  439. 		}
    440. 

  440. 		if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
    441. 

  441. 			BNX2FC_HBA_DBG(lport, "not FCP_TARGET"
    442. 

  442. 				   " not offloading\n");
    443. 

  443. 			break;
    444. 

  444. 		}
    445. 

  445. 

  446. 		/*
    447. 

  447. 		 * Offlaod process is protected with hba mutex.
    448. 

  448. 		 * Use the same mutex_lock for upload process too
    449. 

  449. 		 */
    450. 

  450. 		mutex_lock(&hba->hba_mutex);
    451. 

  451. 		tgt = (struct bnx2fc_rport *)&rp[1];
    452. 

  452. 

  453. 		/* This can happen when ADISC finds the same target */
    454. 

  454. 		if (test_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags)) {
    455. 

  455. 			BNX2FC_TGT_DBG(tgt, "already offloaded\n");
    456. 

  456. 			mutex_unlock(&hba->hba_mutex);
    457. 

  457. 			return;
    458. 

  458. 		}
    459. 

  459. 

  460. 		/*
    461. 

  461. 		 * Offload the session. This is a blocking call, and will
    462. 

  462. 		 * wait until the session is offloaded.
    463. 

  463. 		 */
    464. 

  464. 		bnx2fc_offload_session(port, tgt, rdata);
    465. 

  465. 

  466. 		BNX2FC_TGT_DBG(tgt, "OFFLOAD num_ofld_sess = %d\n",
    467. 

  467. 			hba->num_ofld_sess);
    468. 

  468. 

  469. 		if (test_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags)) {
    470. 

  470. 			/*
    471. 

  471. 			 * Session is offloaded and enabled. Map
    472. 

  472. 			 * doorbell register for this target
    473. 

  473. 			 */
    474. 

  474. 			BNX2FC_TGT_DBG(tgt, "sess offloaded\n");
    475. 

  475. 			/* This counter is protected with hba mutex */
    476. 

  476. 			hba->num_ofld_sess++;
    477. 

  477. 

  478. 			set_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags);
    479. 

  479. 		} else {
    480. 

  480. 			/*
    481. 

  481. 			 * Offload or enable would have failed.
    482. 

  482. 			 * In offload/enable completion path, the
    483. 

  483. 			 * rport would have already been removed
    484. 

  484. 			 */
    485. 

  485. 			BNX2FC_TGT_DBG(tgt, "Port is being logged off as "
    486. 

  486. 				   "offloaded flag not set\n");
    487. 

  487. 		}
    488. 

  488. 		mutex_unlock(&hba->hba_mutex);
    489. 

  489. 		break;
    490. 

  490. 	case RPORT_EV_LOGO:
    491. 

  491. 	case RPORT_EV_FAILED:
    492. 

  492. 	case RPORT_EV_STOP:
    493. 

  493. 		port_id = rdata->ids.port_id;
    494. 

  494. 		if (port_id == FC_FID_DIR_SERV)
    495. 

  495. 			break;
    496. 

  496. 

  497. 		if (!rport) {
    498. 

  498. 			printk(KERN_INFO PFX "%x - rport not created Yet!!\n",
    499. 

  499. 				port_id);
    500. 

  500. 			break;
    501. 

  501. 		}
    502. 

  502. 		rp = rport->dd_data;
    503. 

  503. 		mutex_lock(&hba->hba_mutex);
    504. 

  504. 		/*
    505. 

  505. 		 * Perform session upload. Note that rdata->peers is already
    506. 

  506. 		 * removed from disc->rports list before we get this event.
    507. 

  507. 		 */
    508. 

  508. 		tgt = (struct bnx2fc_rport *)&rp[1];
    509. 

  509. 

  510. 		if (!(test_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags))) {
    511. 

  511. 			mutex_unlock(&hba->hba_mutex);
    512. 

  512. 			break;
    513. 

  513. 		}
    514. 

  514. 		clear_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags);
    515. 

  515. 

  516. 		bnx2fc_upload_session(port, tgt);
    517. 

  517. 		hba->num_ofld_sess--;
    518. 

  518. 		BNX2FC_TGT_DBG(tgt, "UPLOAD num_ofld_sess = %d\n",
    519. 

  519. 			hba->num_ofld_sess);
    520. 

  520. 		/*
    521. 

  521. 		 * Try to wake up the linkdown wait thread. If num_ofld_sess
    522. 

  522. 		 * is 0, the waiting therad wakes up
    523. 

  523. 		 */
    524. 

  524. 		if ((hba->wait_for_link_down) &&
    525. 

  525. 		    (hba->num_ofld_sess == 0)) {
    526. 

  526. 			wake_up_interruptible(&hba->shutdown_wait);
    527. 

  527. 		}
    528. 

  528. 		if (test_bit(BNX2FC_FLAG_EXPL_LOGO, &tgt->flags)) {
    529. 

  529. 			printk(KERN_ERR PFX "Relogin to the tgt\n");
    530. 

  530. 			mutex_lock(&lport->disc.disc_mutex);
    531. 

  531. 			lport->tt.rport_login(rdata);
    532. 

  532. 			mutex_unlock(&lport->disc.disc_mutex);
    533. 

  533. 		}
    534. 

  534. 		mutex_unlock(&hba->hba_mutex);
    535. 

  535. 

  536. 		break;
    537. 

  537. 

  538. 	case RPORT_EV_NONE:
    539. 

  539. 		break;
    540. 

  540. 	}
    541. 

  541. }
    542. 

  542. 

  543. /**
    544. 

  544.  * bnx2fc_tgt_lookup() - Lookup a bnx2fc_rport by port_id
    545. 

  545.  *
    546. 

  546.  * @port:  fcoe_port struct to lookup the target port on
    547. 

  547.  * @port_id: The remote port ID to look up
    548. 

  548.  */
    549. 

  549. struct bnx2fc_rport *bnx2fc_tgt_lookup(struct fcoe_port *port,
    550. 

  550. 					     u32 port_id)
    551. 

  551. {
    552. 

  552. 	struct bnx2fc_interface *interface = port->priv;
    553. 

  553. 	struct bnx2fc_hba *hba = interface->hba;
    554. 

  554. 	struct bnx2fc_rport *tgt;
    555. 

  555. 	struct fc_rport_priv *rdata;
    556. 

  556. 	int i;
    557. 

  557. 

  558. 	for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
    559. 

  559. 		tgt = hba->tgt_ofld_list[i];
    560. 

  560. 		if ((tgt) && (tgt->port == port)) {
    561. 

  561. 			rdata = tgt->rdata;
    562. 

  562. 			if (rdata->ids.port_id == port_id) {
    563. 

  563. 				if (rdata->rp_state != RPORT_ST_DELETE) {
    564. 

  564. 					BNX2FC_TGT_DBG(tgt, "rport "
    565. 

  565. 						"obtained\n");
    566. 

  566. 					return tgt;
    567. 

  567. 				} else {
    568. 

  568. 					BNX2FC_TGT_DBG(tgt, "rport 0x%x "
    569. 

  569. 						"is in DELETED state\n",
    570. 

  570. 						rdata->ids.port_id);
    571. 

  571. 					return NULL;
    572. 

  572. 				}
    573. 

  573. 			}
    574. 

  574. 		}
    575. 

  575. 	}
    576. 

  576. 	return NULL;
    577. 

  577. }
    578. 

  578. 

  579. 

  580. /**
    581. 

  581.  * bnx2fc_alloc_conn_id - allocates FCOE Connection id
    582. 

  582.  *
    583. 

  583.  * @hba:	pointer to adapter structure
    584. 

  584.  * @tgt:	pointer to bnx2fc_rport structure
    585. 

  585.  */
    586. 

  586. static u32 bnx2fc_alloc_conn_id(struct bnx2fc_hba *hba,
    587. 

  587. 				struct bnx2fc_rport *tgt)
    588. 

  588. {
    589. 

  589. 	u32 conn_id, next;
    590. 

  590. 

  591. 	/* called with hba mutex held */
    592. 

  592. 

  593. 	/*
    594. 

  594. 	 * tgt_ofld_list access is synchronized using
    595. 

  595. 	 * both hba mutex and hba lock. Atleast hba mutex or
    596. 

  596. 	 * hba lock needs to be held for read access.
    597. 

  597. 	 */
    598. 

  598. 

  599. 	spin_lock_bh(&hba->hba_lock);
    600. 

  600. 	next = hba->next_conn_id;
    601. 

  601. 	conn_id = hba->next_conn_id++;
    602. 

  602. 	if (hba->next_conn_id == BNX2FC_NUM_MAX_SESS)
    603. 

  603. 		hba->next_conn_id = 0;
    604. 

  604. 

  605. 	while (hba->tgt_ofld_list[conn_id] != NULL) {
    606. 

  606. 		conn_id++;
    607. 

  607. 		if (conn_id == BNX2FC_NUM_MAX_SESS)
    608. 

  608. 			conn_id = 0;
    609. 

  609. 

  610. 		if (conn_id == next) {
    611. 

  611. 			/* No free conn_ids are available */
    612. 

  612. 			spin_unlock_bh(&hba->hba_lock);
    613. 

  613. 			return -1;
    614. 

  614. 		}
    615. 

  615. 	}
    616. 

  616. 	hba->tgt_ofld_list[conn_id] = tgt;
    617. 

  617. 	tgt->fcoe_conn_id = conn_id;
    618. 

  618. 	spin_unlock_bh(&hba->hba_lock);
    619. 

  619. 	return conn_id;
    620. 

  620. }
    621. 

  621. 

  622. static void bnx2fc_free_conn_id(struct bnx2fc_hba *hba, u32 conn_id)
    623. 

  623. {
    624. 

  624. 	/* called with hba mutex held */
    625. 

  625. 	spin_lock_bh(&hba->hba_lock);
    626. 

  626. 	hba->tgt_ofld_list[conn_id] = NULL;
    627. 

  627. 	hba->next_conn_id = conn_id;
    628. 

  628. 	spin_unlock_bh(&hba->hba_lock);
    629. 

  629. }
    630. 

  630. 

  631. /**
    632. 

  632.  *bnx2fc_alloc_session_resc - Allocate qp resources for the session
    633. 

  633.  *
    634. 

  634.  */
    635. 

  635. static int bnx2fc_alloc_session_resc(struct bnx2fc_hba *hba,
    636. 

  636. 					struct bnx2fc_rport *tgt)
    637. 

  637. {
    638. 

  638. 	dma_addr_t page;
    639. 

  639. 	int num_pages;
    640. 

  640. 	u32 *pbl;
    641. 

  641. 

  642. 	/* Allocate and map SQ */
    643. 

  643. 	tgt->sq_mem_size = tgt->max_sqes * BNX2FC_SQ_WQE_SIZE;
    644. 

  644. 	tgt->sq_mem_size = (tgt->sq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK;
    645. 

  645. 

  646. 	tgt->sq = dma_alloc_coherent(&hba->pcidev->dev, tgt->sq_mem_size,
    647. 

  647. 				     &tgt->sq_dma, GFP_KERNEL);
    648. 

  648. 	if (!tgt->sq) {
    649. 

  649. 		printk(KERN_ERR PFX "unable to allocate SQ memory %d\n",
    650. 

  650. 			tgt->sq_mem_size);
    651. 

  651. 		goto mem_alloc_failure;
    652. 

  652. 	}
    653. 

  653. 	memset(tgt->sq, 0, tgt->sq_mem_size);
    654. 

  654. 

  655. 	/* Allocate and map CQ */
    656. 

  656. 	tgt->cq_mem_size = tgt->max_cqes * BNX2FC_CQ_WQE_SIZE;
    657. 

  657. 	tgt->cq_mem_size = (tgt->cq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK;
    658. 

  658. 

  659. 	tgt->cq = dma_alloc_coherent(&hba->pcidev->dev, tgt->cq_mem_size,
    660. 

  660. 				     &tgt->cq_dma, GFP_KERNEL);
    661. 

  661. 	if (!tgt->cq) {
    662. 

  662. 		printk(KERN_ERR PFX "unable to allocate CQ memory %d\n",
    663. 

  663. 			tgt->cq_mem_size);
    664. 

  664. 		goto mem_alloc_failure;
    665. 

  665. 	}
    666. 

  666. 	memset(tgt->cq, 0, tgt->cq_mem_size);
    667. 

  667. 

  668. 	/* Allocate and map RQ and RQ PBL */
    669. 

  669. 	tgt->rq_mem_size = tgt->max_rqes * BNX2FC_RQ_WQE_SIZE;
    670. 

  670. 	tgt->rq_mem_size = (tgt->rq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK;
    671. 

  671. 

  672. 	tgt->rq = dma_alloc_coherent(&hba->pcidev->dev, tgt->rq_mem_size,
    673. 

  673. 					&tgt->rq_dma, GFP_KERNEL);
    674. 

  674. 	if (!tgt->rq) {
    675. 

  675. 		printk(KERN_ERR PFX "unable to allocate RQ memory %d\n",
    676. 

  676. 			tgt->rq_mem_size);
    677. 

  677. 		goto mem_alloc_failure;
    678. 

  678. 	}
    679. 

  679. 	memset(tgt->rq, 0, tgt->rq_mem_size);
    680. 

  680. 

  681. 	tgt->rq_pbl_size = (tgt->rq_mem_size / PAGE_SIZE) * sizeof(void *);
    682. 

  682. 	tgt->rq_pbl_size = (tgt->rq_pbl_size + (PAGE_SIZE - 1)) & PAGE_MASK;
    683. 

  683. 

  684. 	tgt->rq_pbl = dma_alloc_coherent(&hba->pcidev->dev, tgt->rq_pbl_size,
    685. 

  685. 					 &tgt->rq_pbl_dma, GFP_KERNEL);
    686. 

  686. 	if (!tgt->rq_pbl) {
    687. 

  687. 		printk(KERN_ERR PFX "unable to allocate RQ PBL %d\n",
    688. 

  688. 			tgt->rq_pbl_size);
    689. 

  689. 		goto mem_alloc_failure;
    690. 

  690. 	}
    691. 

  691. 

  692. 	memset(tgt->rq_pbl, 0, tgt->rq_pbl_size);
    693. 

  693. 	num_pages = tgt->rq_mem_size / PAGE_SIZE;
    694. 

  694. 	page = tgt->rq_dma;
    695. 

  695. 	pbl = (u32 *)tgt->rq_pbl;
    696. 

  696. 

  697. 	while (num_pages--) {
    698. 

  698. 		*pbl = (u32)page;
    699. 

  699. 		pbl++;
    700. 

  700. 		*pbl = (u32)((u64)page >> 32);
    701. 

  701. 		pbl++;
    702. 

  702. 		page += PAGE_SIZE;
    703. 

  703. 	}
    704. 

  704. 

  705. 	/* Allocate and map XFERQ */
    706. 

  706. 	tgt->xferq_mem_size = tgt->max_sqes * BNX2FC_XFERQ_WQE_SIZE;
    707. 

  707. 	tgt->xferq_mem_size = (tgt->xferq_mem_size + (PAGE_SIZE - 1)) &
    708. 

  708. 			       PAGE_MASK;
    709. 

  709. 

  710. 	tgt->xferq = dma_alloc_coherent(&hba->pcidev->dev, tgt->xferq_mem_size,
    711. 

  711. 					&tgt->xferq_dma, GFP_KERNEL);
    712. 

  712. 	if (!tgt->xferq) {
    713. 

  713. 		printk(KERN_ERR PFX "unable to allocate XFERQ %d\n",
    714. 

  714. 			tgt->xferq_mem_size);
    715. 

  715. 		goto mem_alloc_failure;
    716. 

  716. 	}
    717. 

  717. 	memset(tgt->xferq, 0, tgt->xferq_mem_size);
    718. 

  718. 

  719. 	/* Allocate and map CONFQ & CONFQ PBL */
    720. 

  720. 	tgt->confq_mem_size = tgt->max_sqes * BNX2FC_CONFQ_WQE_SIZE;
    721. 

  721. 	tgt->confq_mem_size = (tgt->confq_mem_size + (PAGE_SIZE - 1)) &
    722. 

  722. 			       PAGE_MASK;
    723. 

  723. 

  724. 	tgt->confq = dma_alloc_coherent(&hba->pcidev->dev, tgt->confq_mem_size,
    725. 

  725. 					&tgt->confq_dma, GFP_KERNEL);
    726. 

  726. 	if (!tgt->confq) {
    727. 

  727. 		printk(KERN_ERR PFX "unable to allocate CONFQ %d\n",
    728. 

  728. 			tgt->confq_mem_size);
    729. 

  729. 		goto mem_alloc_failure;
    730. 

  730. 	}
    731. 

  731. 	memset(tgt->confq, 0, tgt->confq_mem_size);
    732. 

  732. 

  733. 	tgt->confq_pbl_size =
    734. 

  734. 		(tgt->confq_mem_size / PAGE_SIZE) * sizeof(void *);
    735. 

  735. 	tgt->confq_pbl_size =
    736. 

  736. 		(tgt->confq_pbl_size + (PAGE_SIZE - 1)) & PAGE_MASK;
    737. 

  737. 

  738. 	tgt->confq_pbl = dma_alloc_coherent(&hba->pcidev->dev,
    739. 

  739. 					    tgt->confq_pbl_size,
    740. 

  740. 					    &tgt->confq_pbl_dma, GFP_KERNEL);
    741. 

  741. 	if (!tgt->confq_pbl) {
    742. 

  742. 		printk(KERN_ERR PFX "unable to allocate CONFQ PBL %d\n",
    743. 

  743. 			tgt->confq_pbl_size);
    744. 

  744. 		goto mem_alloc_failure;
    745. 

  745. 	}
    746. 

  746. 

  747. 	memset(tgt->confq_pbl, 0, tgt->confq_pbl_size);
    748. 

  748. 	num_pages = tgt->confq_mem_size / PAGE_SIZE;
    749. 

  749. 	page = tgt->confq_dma;
    750. 

  750. 	pbl = (u32 *)tgt->confq_pbl;
    751. 

  751. 

  752. 	while (num_pages--) {
    753. 

  753. 		*pbl = (u32)page;
    754. 

  754. 		pbl++;
    755. 

  755. 		*pbl = (u32)((u64)page >> 32);
    756. 

  756. 		pbl++;
    757. 

  757. 		page += PAGE_SIZE;
    758. 

  758. 	}
    759. 

  759. 

  760. 	/* Allocate and map ConnDB */
    761. 

  761. 	tgt->conn_db_mem_size = sizeof(struct fcoe_conn_db);
    762. 

  762. 

  763. 	tgt->conn_db = dma_alloc_coherent(&hba->pcidev->dev,
    764. 

  764. 					  tgt->conn_db_mem_size,
    765. 

  765. 					  &tgt->conn_db_dma, GFP_KERNEL);
    766. 

  766. 	if (!tgt->conn_db) {
    767. 

  767. 		printk(KERN_ERR PFX "unable to allocate conn_db %d\n",
    768. 

  768. 						tgt->conn_db_mem_size);
    769. 

  769. 		goto mem_alloc_failure;
    770. 

  770. 	}
    771. 

  771. 	memset(tgt->conn_db, 0, tgt->conn_db_mem_size);
    772. 

  772. 

  773. 

  774. 	/* Allocate and map LCQ */
    775. 

  775. 	tgt->lcq_mem_size = (tgt->max_sqes + 8) * BNX2FC_SQ_WQE_SIZE;
    776. 

  776. 	tgt->lcq_mem_size = (tgt->lcq_mem_size + (PAGE_SIZE - 1)) &
    777. 

  777. 			     PAGE_MASK;
    778. 

  778. 

  779. 	tgt->lcq = dma_alloc_coherent(&hba->pcidev->dev, tgt->lcq_mem_size,
    780. 

  780. 				      &tgt->lcq_dma, GFP_KERNEL);
    781. 

  781. 

  782. 	if (!tgt->lcq) {
    783. 

  783. 		printk(KERN_ERR PFX "unable to allocate lcq %d\n",
    784. 

  784. 		       tgt->lcq_mem_size);
    785. 

  785. 		goto mem_alloc_failure;
    786. 

  786. 	}
    787. 

  787. 	memset(tgt->lcq, 0, tgt->lcq_mem_size);
    788. 

  788. 

  789. 	tgt->conn_db->rq_prod = 0x8000;
    790. 

  790. 

  791. 	return 0;
    792. 

  792. 

  793. mem_alloc_failure:
    794. 

  794. 	bnx2fc_free_session_resc(hba, tgt);
    795. 

  795. 	bnx2fc_free_conn_id(hba, tgt->fcoe_conn_id);
    796. 

  796. 	return -ENOMEM;
    797. 

  797. }
    798. 

  798. 

  799. /**
    800. 

  800.  * bnx2i_free_session_resc - free qp resources for the session
    801. 

  801.  *
    802. 

  802.  * @hba:	adapter structure pointer
    803. 

  803.  * @tgt:	bnx2fc_rport structure pointer
    804. 

  804.  *
    805. 

  805.  * Free QP resources - SQ/RQ/CQ/XFERQ memory and PBL
    806. 

  806.  */
    807. 

  807. static void bnx2fc_free_session_resc(struct bnx2fc_hba *hba,
    808. 

  808. 						struct bnx2fc_rport *tgt)
    809. 

  809. {
    810. 

  810. 	BNX2FC_TGT_DBG(tgt, "Freeing up session resources\n");
    811. 

  811. 

  812. 	if (tgt->ctx_base) {
    813. 

  813. 		iounmap(tgt->ctx_base);
    814. 

  814. 		tgt->ctx_base = NULL;
    815. 

  815. 	}
    816. 

  816. 

  817. 	spin_lock_bh(&tgt->cq_lock);
    818. 

  818. 	/* Free LCQ */
    819. 

  819. 	if (tgt->lcq) {
    820. 

  820. 		dma_free_coherent(&hba->pcidev->dev, tgt->lcq_mem_size,
    821. 

  821. 				    tgt->lcq, tgt->lcq_dma);
    822. 

  822. 		tgt->lcq = NULL;
    823. 

  823. 	}
    824. 

  824. 	/* Free connDB */
    825. 

  825. 	if (tgt->conn_db) {
    826. 

  826. 		dma_free_coherent(&hba->pcidev->dev, tgt->conn_db_mem_size,
    827. 

  827. 				    tgt->conn_db, tgt->conn_db_dma);
    828. 

  828. 		tgt->conn_db = NULL;
    829. 

  829. 	}
    830. 

  830. 	/* Free confq  and confq pbl */
    831. 

  831. 	if (tgt->confq_pbl) {
    832. 

  832. 		dma_free_coherent(&hba->pcidev->dev, tgt->confq_pbl_size,
    833. 

  833. 				    tgt->confq_pbl, tgt->confq_pbl_dma);
    834. 

  834. 		tgt->confq_pbl = NULL;
    835. 

  835. 	}
    836. 

  836. 	if (tgt->confq) {
    837. 

  837. 		dma_free_coherent(&hba->pcidev->dev, tgt->confq_mem_size,
    838. 

  838. 				    tgt->confq, tgt->confq_dma);
    839. 

  839. 		tgt->confq = NULL;
    840. 

  840. 	}
    841. 

  841. 	/* Free XFERQ */
    842. 

  842. 	if (tgt->xferq) {
    843. 

  843. 		dma_free_coherent(&hba->pcidev->dev, tgt->xferq_mem_size,
    844. 

  844. 				    tgt->xferq, tgt->xferq_dma);
    845. 

  845. 		tgt->xferq = NULL;
    846. 

  846. 	}
    847. 

  847. 	/* Free RQ PBL and RQ */
    848. 

  848. 	if (tgt->rq_pbl) {
    849. 

  849. 		dma_free_coherent(&hba->pcidev->dev, tgt->rq_pbl_size,
    850. 

  850. 				    tgt->rq_pbl, tgt->rq_pbl_dma);
    851. 

  851. 		tgt->rq_pbl = NULL;
    852. 

  852. 	}
    853. 

  853. 	if (tgt->rq) {
    854. 

  854. 		dma_free_coherent(&hba->pcidev->dev, tgt->rq_mem_size,
    855. 

  855. 				    tgt->rq, tgt->rq_dma);
    856. 

  856. 		tgt->rq = NULL;
    857. 

  857. 	}
    858. 

  858. 	/* Free CQ */
    859. 

  859. 	if (tgt->cq) {
    860. 

  860. 		dma_free_coherent(&hba->pcidev->dev, tgt->cq_mem_size,
    861. 

  861. 				    tgt->cq, tgt->cq_dma);
    862. 

  862. 		tgt->cq = NULL;
    863. 

  863. 	}
    864. 

  864. 	/* Free SQ */
    865. 

  865. 	if (tgt->sq) {
    866. 

  866. 		dma_free_coherent(&hba->pcidev->dev, tgt->sq_mem_size,
    867. 

  867. 				    tgt->sq, tgt->sq_dma);
    868. 

  868. 		tgt->sq = NULL;
    869. 

  869. 	}
    870. 

  870. 	spin_unlock_bh(&tgt->cq_lock);
    871. 

  871. }
    872.