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1 | /* | |
2 | * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx | |
3 | * | |
4 | * based on qla2x00t.c code: | |
5 | * | |
6 | * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net> | |
7 | * Copyright (C) 2004 - 2005 Leonid Stoljar | |
8 | * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us> | |
9 | * Copyright (C) 2006 - 2010 ID7 Ltd. | |
10 | * | |
11 | * Forward port and refactoring to modern qla2xxx and target/configfs | |
12 | * | |
13 | * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org> | |
14 | * | |
15 | * This program is free software; you can redistribute it and/or | |
16 | * modify it under the terms of the GNU General Public License | |
17 | * as published by the Free Software Foundation, version 2 | |
18 | * of the License. | |
19 | * | |
20 | * This program is distributed in the hope that it will be useful, | |
21 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
23 | * GNU General Public License for more details. | |
24 | */ | |
25 | ||
26 | #include <linux/module.h> | |
27 | #include <linux/init.h> | |
28 | #include <linux/types.h> | |
29 | #include <linux/blkdev.h> | |
30 | #include <linux/interrupt.h> | |
31 | #include <linux/pci.h> | |
32 | #include <linux/delay.h> | |
33 | #include <linux/list.h> | |
34 | #include <linux/workqueue.h> | |
35 | #include <asm/unaligned.h> | |
36 | #include <scsi/scsi.h> | |
37 | #include <scsi/scsi_host.h> | |
38 | #include <scsi/scsi_tcq.h> | |
39 | #include <target/target_core_base.h> | |
40 | #include <target/target_core_fabric.h> | |
41 | ||
42 | #include "qla_def.h" | |
43 | #include "qla_target.h" | |
44 | ||
45 | static int ql2xtgt_tape_enable; | |
46 | module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR); | |
47 | MODULE_PARM_DESC(ql2xtgt_tape_enable, | |
48 | "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER."); | |
49 | ||
50 | static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED; | |
51 | module_param(qlini_mode, charp, S_IRUGO); | |
52 | MODULE_PARM_DESC(qlini_mode, | |
53 | "Determines when initiator mode will be enabled. Possible values: " | |
54 | "\"exclusive\" - initiator mode will be enabled on load, " | |
55 | "disabled on enabling target mode and then on disabling target mode " | |
56 | "enabled back; " | |
57 | "\"disabled\" - initiator mode will never be enabled; " | |
58 | "\"dual\" - Initiator Modes will be enabled. Target Mode can be activated " | |
59 | "when ready " | |
60 | "\"enabled\" (default) - initiator mode will always stay enabled."); | |
61 | ||
62 | static int ql_dm_tgt_ex_pct = 0; | |
63 | module_param(ql_dm_tgt_ex_pct, int, S_IRUGO|S_IWUSR); | |
64 | MODULE_PARM_DESC(ql_dm_tgt_ex_pct, | |
65 | "For Dual Mode (qlini_mode=dual), this parameter determines " | |
66 | "the percentage of exchanges/cmds FW will allocate resources " | |
67 | "for Target mode."); | |
68 | ||
69 | int ql2xuctrlirq = 1; | |
70 | module_param(ql2xuctrlirq, int, 0644); | |
71 | MODULE_PARM_DESC(ql2xuctrlirq, | |
72 | "User to control IRQ placement via smp_affinity." | |
73 | "Valid with qlini_mode=disabled." | |
74 | "1(default): enable"); | |
75 | ||
76 | int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; | |
77 | ||
78 | static int temp_sam_status = SAM_STAT_BUSY; | |
79 | ||
80 | /* | |
81 | * From scsi/fc/fc_fcp.h | |
82 | */ | |
83 | enum fcp_resp_rsp_codes { | |
84 | FCP_TMF_CMPL = 0, | |
85 | FCP_DATA_LEN_INVALID = 1, | |
86 | FCP_CMND_FIELDS_INVALID = 2, | |
87 | FCP_DATA_PARAM_MISMATCH = 3, | |
88 | FCP_TMF_REJECTED = 4, | |
89 | FCP_TMF_FAILED = 5, | |
90 | FCP_TMF_INVALID_LUN = 9, | |
91 | }; | |
92 | ||
93 | /* | |
94 | * fc_pri_ta from scsi/fc/fc_fcp.h | |
95 | */ | |
96 | #define FCP_PTA_SIMPLE 0 /* simple task attribute */ | |
97 | #define FCP_PTA_HEADQ 1 /* head of queue task attribute */ | |
98 | #define FCP_PTA_ORDERED 2 /* ordered task attribute */ | |
99 | #define FCP_PTA_ACA 4 /* auto. contingent allegiance */ | |
100 | #define FCP_PTA_MASK 7 /* mask for task attribute field */ | |
101 | #define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */ | |
102 | #define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */ | |
103 | ||
104 | /* | |
105 | * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which | |
106 | * must be called under HW lock and could unlock/lock it inside. | |
107 | * It isn't an issue, since in the current implementation on the time when | |
108 | * those functions are called: | |
109 | * | |
110 | * - Either context is IRQ and only IRQ handler can modify HW data, | |
111 | * including rings related fields, | |
112 | * | |
113 | * - Or access to target mode variables from struct qla_tgt doesn't | |
114 | * cross those functions boundaries, except tgt_stop, which | |
115 | * additionally protected by irq_cmd_count. | |
116 | */ | |
117 | /* Predefs for callbacks handed to qla2xxx LLD */ | |
118 | static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha, | |
119 | struct atio_from_isp *pkt, uint8_t); | |
120 | static void qlt_response_pkt(struct scsi_qla_host *ha, struct rsp_que *rsp, | |
121 | response_t *pkt); | |
122 | static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, | |
123 | int fn, void *iocb, int flags); | |
124 | static void qlt_send_term_exchange(struct qla_qpair *, struct qla_tgt_cmd | |
125 | *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort); | |
126 | static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, | |
127 | struct atio_from_isp *atio, uint16_t status, int qfull); | |
128 | static void qlt_disable_vha(struct scsi_qla_host *vha); | |
129 | static void qlt_clear_tgt_db(struct qla_tgt *tgt); | |
130 | static void qlt_send_notify_ack(struct qla_qpair *qpair, | |
131 | struct imm_ntfy_from_isp *ntfy, | |
132 | uint32_t add_flags, uint16_t resp_code, int resp_code_valid, | |
133 | uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan); | |
134 | static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, | |
135 | struct imm_ntfy_from_isp *imm, int ha_locked); | |
136 | static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha, | |
137 | fc_port_t *fcport, bool local); | |
138 | void qlt_unreg_sess(struct fc_port *sess); | |
139 | static void qlt_24xx_handle_abts(struct scsi_qla_host *, | |
140 | struct abts_recv_from_24xx *); | |
141 | static void qlt_send_busy(struct qla_qpair *, struct atio_from_isp *, | |
142 | uint16_t); | |
143 | ||
144 | /* | |
145 | * Global Variables | |
146 | */ | |
147 | static struct kmem_cache *qla_tgt_mgmt_cmd_cachep; | |
148 | static struct kmem_cache *qla_tgt_plogi_cachep; | |
149 | static mempool_t *qla_tgt_mgmt_cmd_mempool; | |
150 | static struct workqueue_struct *qla_tgt_wq; | |
151 | static DEFINE_MUTEX(qla_tgt_mutex); | |
152 | static LIST_HEAD(qla_tgt_glist); | |
153 | ||
154 | static const char *prot_op_str(u32 prot_op) | |
155 | { | |
156 | switch (prot_op) { | |
157 | case TARGET_PROT_NORMAL: return "NORMAL"; | |
158 | case TARGET_PROT_DIN_INSERT: return "DIN_INSERT"; | |
159 | case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT"; | |
160 | case TARGET_PROT_DIN_STRIP: return "DIN_STRIP"; | |
161 | case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP"; | |
162 | case TARGET_PROT_DIN_PASS: return "DIN_PASS"; | |
163 | case TARGET_PROT_DOUT_PASS: return "DOUT_PASS"; | |
164 | default: return "UNKNOWN"; | |
165 | } | |
166 | } | |
167 | ||
168 | /* This API intentionally takes dest as a parameter, rather than returning | |
169 | * int value to avoid caller forgetting to issue wmb() after the store */ | |
170 | void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest) | |
171 | { | |
172 | scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev); | |
173 | *dest = atomic_inc_return(&base_vha->generation_tick); | |
174 | /* memory barrier */ | |
175 | wmb(); | |
176 | } | |
177 | ||
178 | /* Might release hw lock, then reaquire!! */ | |
179 | static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked) | |
180 | { | |
181 | /* Send marker if required */ | |
182 | if (unlikely(vha->marker_needed != 0)) { | |
183 | int rc = qla2x00_issue_marker(vha, vha_locked); | |
184 | if (rc != QLA_SUCCESS) { | |
185 | ql_dbg(ql_dbg_tgt, vha, 0xe03d, | |
186 | "qla_target(%d): issue_marker() failed\n", | |
187 | vha->vp_idx); | |
188 | } | |
189 | return rc; | |
190 | } | |
191 | return QLA_SUCCESS; | |
192 | } | |
193 | ||
194 | static inline | |
195 | struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha, | |
196 | uint8_t *d_id) | |
197 | { | |
198 | struct scsi_qla_host *host; | |
199 | uint32_t key = 0; | |
200 | ||
201 | if ((vha->d_id.b.area == d_id[1]) && (vha->d_id.b.domain == d_id[0]) && | |
202 | (vha->d_id.b.al_pa == d_id[2])) | |
203 | return vha; | |
204 | ||
205 | key = (uint32_t)d_id[0] << 16; | |
206 | key |= (uint32_t)d_id[1] << 8; | |
207 | key |= (uint32_t)d_id[2]; | |
208 | ||
209 | host = btree_lookup32(&vha->hw->tgt.host_map, key); | |
210 | if (!host) | |
211 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf005, | |
212 | "Unable to find host %06x\n", key); | |
213 | ||
214 | return host; | |
215 | } | |
216 | ||
217 | static inline | |
218 | struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha, | |
219 | uint16_t vp_idx) | |
220 | { | |
221 | struct qla_hw_data *ha = vha->hw; | |
222 | ||
223 | if (vha->vp_idx == vp_idx) | |
224 | return vha; | |
225 | ||
226 | BUG_ON(ha->tgt.tgt_vp_map == NULL); | |
227 | if (likely(test_bit(vp_idx, ha->vp_idx_map))) | |
228 | return ha->tgt.tgt_vp_map[vp_idx].vha; | |
229 | ||
230 | return NULL; | |
231 | } | |
232 | ||
233 | static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha) | |
234 | { | |
235 | unsigned long flags; | |
236 | ||
237 | spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); | |
238 | ||
239 | vha->hw->tgt.num_pend_cmds++; | |
240 | if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds) | |
241 | vha->qla_stats.stat_max_pend_cmds = | |
242 | vha->hw->tgt.num_pend_cmds; | |
243 | spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); | |
244 | } | |
245 | static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha) | |
246 | { | |
247 | unsigned long flags; | |
248 | ||
249 | spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); | |
250 | vha->hw->tgt.num_pend_cmds--; | |
251 | spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); | |
252 | } | |
253 | ||
254 | ||
255 | static void qlt_queue_unknown_atio(scsi_qla_host_t *vha, | |
256 | struct atio_from_isp *atio, uint8_t ha_locked) | |
257 | { | |
258 | struct qla_tgt_sess_op *u; | |
259 | struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; | |
260 | unsigned long flags; | |
261 | ||
262 | if (tgt->tgt_stop) { | |
263 | ql_dbg(ql_dbg_async, vha, 0x502c, | |
264 | "qla_target(%d): dropping unknown ATIO_TYPE7, because tgt is being stopped", | |
265 | vha->vp_idx); | |
266 | goto out_term; | |
267 | } | |
268 | ||
269 | u = kzalloc(sizeof(*u), GFP_ATOMIC); | |
270 | if (u == NULL) | |
271 | goto out_term; | |
272 | ||
273 | u->vha = vha; | |
274 | memcpy(&u->atio, atio, sizeof(*atio)); | |
275 | INIT_LIST_HEAD(&u->cmd_list); | |
276 | ||
277 | spin_lock_irqsave(&vha->cmd_list_lock, flags); | |
278 | list_add_tail(&u->cmd_list, &vha->unknown_atio_list); | |
279 | spin_unlock_irqrestore(&vha->cmd_list_lock, flags); | |
280 | ||
281 | schedule_delayed_work(&vha->unknown_atio_work, 1); | |
282 | ||
283 | out: | |
284 | return; | |
285 | ||
286 | out_term: | |
287 | qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0); | |
288 | goto out; | |
289 | } | |
290 | ||
291 | static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha, | |
292 | uint8_t ha_locked) | |
293 | { | |
294 | struct qla_tgt_sess_op *u, *t; | |
295 | scsi_qla_host_t *host; | |
296 | struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; | |
297 | unsigned long flags; | |
298 | uint8_t queued = 0; | |
299 | ||
300 | list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) { | |
301 | if (u->aborted) { | |
302 | ql_dbg(ql_dbg_async, vha, 0x502e, | |
303 | "Freeing unknown %s %p, because of Abort\n", | |
304 | "ATIO_TYPE7", u); | |
305 | qlt_send_term_exchange(vha->hw->base_qpair, NULL, | |
306 | &u->atio, ha_locked, 0); | |
307 | goto abort; | |
308 | } | |
309 | ||
310 | host = qlt_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id); | |
311 | if (host != NULL) { | |
312 | ql_dbg(ql_dbg_async, vha, 0x502f, | |
313 | "Requeuing unknown ATIO_TYPE7 %p\n", u); | |
314 | qlt_24xx_atio_pkt(host, &u->atio, ha_locked); | |
315 | } else if (tgt->tgt_stop) { | |
316 | ql_dbg(ql_dbg_async, vha, 0x503a, | |
317 | "Freeing unknown %s %p, because tgt is being stopped\n", | |
318 | "ATIO_TYPE7", u); | |
319 | qlt_send_term_exchange(vha->hw->base_qpair, NULL, | |
320 | &u->atio, ha_locked, 0); | |
321 | } else { | |
322 | ql_dbg(ql_dbg_async, vha, 0x503d, | |
323 | "Reschedule u %p, vha %p, host %p\n", u, vha, host); | |
324 | if (!queued) { | |
325 | queued = 1; | |
326 | schedule_delayed_work(&vha->unknown_atio_work, | |
327 | 1); | |
328 | } | |
329 | continue; | |
330 | } | |
331 | ||
332 | abort: | |
333 | spin_lock_irqsave(&vha->cmd_list_lock, flags); | |
334 | list_del(&u->cmd_list); | |
335 | spin_unlock_irqrestore(&vha->cmd_list_lock, flags); | |
336 | kfree(u); | |
337 | } | |
338 | } | |
339 | ||
340 | void qlt_unknown_atio_work_fn(struct work_struct *work) | |
341 | { | |
342 | struct scsi_qla_host *vha = container_of(to_delayed_work(work), | |
343 | struct scsi_qla_host, unknown_atio_work); | |
344 | ||
345 | qlt_try_to_dequeue_unknown_atios(vha, 0); | |
346 | } | |
347 | ||
348 | static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha, | |
349 | struct atio_from_isp *atio, uint8_t ha_locked) | |
350 | { | |
351 | ql_dbg(ql_dbg_tgt, vha, 0xe072, | |
352 | "%s: qla_target(%d): type %x ox_id %04x\n", | |
353 | __func__, vha->vp_idx, atio->u.raw.entry_type, | |
354 | be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); | |
355 | ||
356 | switch (atio->u.raw.entry_type) { | |
357 | case ATIO_TYPE7: | |
358 | { | |
359 | struct scsi_qla_host *host = qlt_find_host_by_d_id(vha, | |
360 | atio->u.isp24.fcp_hdr.d_id); | |
361 | if (unlikely(NULL == host)) { | |
362 | ql_dbg(ql_dbg_tgt, vha, 0xe03e, | |
363 | "qla_target(%d): Received ATIO_TYPE7 " | |
364 | "with unknown d_id %x:%x:%x\n", vha->vp_idx, | |
365 | atio->u.isp24.fcp_hdr.d_id[0], | |
366 | atio->u.isp24.fcp_hdr.d_id[1], | |
367 | atio->u.isp24.fcp_hdr.d_id[2]); | |
368 | ||
369 | ||
370 | qlt_queue_unknown_atio(vha, atio, ha_locked); | |
371 | break; | |
372 | } | |
373 | if (unlikely(!list_empty(&vha->unknown_atio_list))) | |
374 | qlt_try_to_dequeue_unknown_atios(vha, ha_locked); | |
375 | ||
376 | qlt_24xx_atio_pkt(host, atio, ha_locked); | |
377 | break; | |
378 | } | |
379 | ||
380 | case IMMED_NOTIFY_TYPE: | |
381 | { | |
382 | struct scsi_qla_host *host = vha; | |
383 | struct imm_ntfy_from_isp *entry = | |
384 | (struct imm_ntfy_from_isp *)atio; | |
385 | ||
386 | qlt_issue_marker(vha, ha_locked); | |
387 | ||
388 | if ((entry->u.isp24.vp_index != 0xFF) && | |
389 | (entry->u.isp24.nport_handle != 0xFFFF)) { | |
390 | host = qlt_find_host_by_vp_idx(vha, | |
391 | entry->u.isp24.vp_index); | |
392 | if (unlikely(!host)) { | |
393 | ql_dbg(ql_dbg_tgt, vha, 0xe03f, | |
394 | "qla_target(%d): Received " | |
395 | "ATIO (IMMED_NOTIFY_TYPE) " | |
396 | "with unknown vp_index %d\n", | |
397 | vha->vp_idx, entry->u.isp24.vp_index); | |
398 | break; | |
399 | } | |
400 | } | |
401 | qlt_24xx_atio_pkt(host, atio, ha_locked); | |
402 | break; | |
403 | } | |
404 | ||
405 | case VP_RPT_ID_IOCB_TYPE: | |
406 | qla24xx_report_id_acquisition(vha, | |
407 | (struct vp_rpt_id_entry_24xx *)atio); | |
408 | break; | |
409 | ||
410 | case ABTS_RECV_24XX: | |
411 | { | |
412 | struct abts_recv_from_24xx *entry = | |
413 | (struct abts_recv_from_24xx *)atio; | |
414 | struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, | |
415 | entry->vp_index); | |
416 | unsigned long flags; | |
417 | ||
418 | if (unlikely(!host)) { | |
419 | ql_dbg(ql_dbg_tgt, vha, 0xe00a, | |
420 | "qla_target(%d): Response pkt (ABTS_RECV_24XX) " | |
421 | "received, with unknown vp_index %d\n", | |
422 | vha->vp_idx, entry->vp_index); | |
423 | break; | |
424 | } | |
425 | if (!ha_locked) | |
426 | spin_lock_irqsave(&host->hw->hardware_lock, flags); | |
427 | qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio); | |
428 | if (!ha_locked) | |
429 | spin_unlock_irqrestore(&host->hw->hardware_lock, flags); | |
430 | break; | |
431 | } | |
432 | ||
433 | /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */ | |
434 | ||
435 | default: | |
436 | ql_dbg(ql_dbg_tgt, vha, 0xe040, | |
437 | "qla_target(%d): Received unknown ATIO atio " | |
438 | "type %x\n", vha->vp_idx, atio->u.raw.entry_type); | |
439 | break; | |
440 | } | |
441 | ||
442 | return false; | |
443 | } | |
444 | ||
445 | void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, | |
446 | struct rsp_que *rsp, response_t *pkt) | |
447 | { | |
448 | switch (pkt->entry_type) { | |
449 | case CTIO_CRC2: | |
450 | ql_dbg(ql_dbg_tgt, vha, 0xe073, | |
451 | "qla_target(%d):%s: CRC2 Response pkt\n", | |
452 | vha->vp_idx, __func__); | |
453 | case CTIO_TYPE7: | |
454 | { | |
455 | struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; | |
456 | struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, | |
457 | entry->vp_index); | |
458 | if (unlikely(!host)) { | |
459 | ql_dbg(ql_dbg_tgt, vha, 0xe041, | |
460 | "qla_target(%d): Response pkt (CTIO_TYPE7) " | |
461 | "received, with unknown vp_index %d\n", | |
462 | vha->vp_idx, entry->vp_index); | |
463 | break; | |
464 | } | |
465 | qlt_response_pkt(host, rsp, pkt); | |
466 | break; | |
467 | } | |
468 | ||
469 | case IMMED_NOTIFY_TYPE: | |
470 | { | |
471 | struct scsi_qla_host *host = vha; | |
472 | struct imm_ntfy_from_isp *entry = | |
473 | (struct imm_ntfy_from_isp *)pkt; | |
474 | ||
475 | host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index); | |
476 | if (unlikely(!host)) { | |
477 | ql_dbg(ql_dbg_tgt, vha, 0xe042, | |
478 | "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) " | |
479 | "received, with unknown vp_index %d\n", | |
480 | vha->vp_idx, entry->u.isp24.vp_index); | |
481 | break; | |
482 | } | |
483 | qlt_response_pkt(host, rsp, pkt); | |
484 | break; | |
485 | } | |
486 | ||
487 | case NOTIFY_ACK_TYPE: | |
488 | { | |
489 | struct scsi_qla_host *host = vha; | |
490 | struct nack_to_isp *entry = (struct nack_to_isp *)pkt; | |
491 | ||
492 | if (0xFF != entry->u.isp24.vp_index) { | |
493 | host = qlt_find_host_by_vp_idx(vha, | |
494 | entry->u.isp24.vp_index); | |
495 | if (unlikely(!host)) { | |
496 | ql_dbg(ql_dbg_tgt, vha, 0xe043, | |
497 | "qla_target(%d): Response " | |
498 | "pkt (NOTIFY_ACK_TYPE) " | |
499 | "received, with unknown " | |
500 | "vp_index %d\n", vha->vp_idx, | |
501 | entry->u.isp24.vp_index); | |
502 | break; | |
503 | } | |
504 | } | |
505 | qlt_response_pkt(host, rsp, pkt); | |
506 | break; | |
507 | } | |
508 | ||
509 | case ABTS_RECV_24XX: | |
510 | { | |
511 | struct abts_recv_from_24xx *entry = | |
512 | (struct abts_recv_from_24xx *)pkt; | |
513 | struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, | |
514 | entry->vp_index); | |
515 | if (unlikely(!host)) { | |
516 | ql_dbg(ql_dbg_tgt, vha, 0xe044, | |
517 | "qla_target(%d): Response pkt " | |
518 | "(ABTS_RECV_24XX) received, with unknown " | |
519 | "vp_index %d\n", vha->vp_idx, entry->vp_index); | |
520 | break; | |
521 | } | |
522 | qlt_response_pkt(host, rsp, pkt); | |
523 | break; | |
524 | } | |
525 | ||
526 | case ABTS_RESP_24XX: | |
527 | { | |
528 | struct abts_resp_to_24xx *entry = | |
529 | (struct abts_resp_to_24xx *)pkt; | |
530 | struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, | |
531 | entry->vp_index); | |
532 | if (unlikely(!host)) { | |
533 | ql_dbg(ql_dbg_tgt, vha, 0xe045, | |
534 | "qla_target(%d): Response pkt " | |
535 | "(ABTS_RECV_24XX) received, with unknown " | |
536 | "vp_index %d\n", vha->vp_idx, entry->vp_index); | |
537 | break; | |
538 | } | |
539 | qlt_response_pkt(host, rsp, pkt); | |
540 | break; | |
541 | } | |
542 | ||
543 | default: | |
544 | qlt_response_pkt(vha, rsp, pkt); | |
545 | break; | |
546 | } | |
547 | ||
548 | } | |
549 | ||
550 | /* | |
551 | * All qlt_plogi_ack_t operations are protected by hardware_lock | |
552 | */ | |
553 | static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport, | |
554 | struct imm_ntfy_from_isp *ntfy, int type) | |
555 | { | |
556 | struct qla_work_evt *e; | |
557 | e = qla2x00_alloc_work(vha, QLA_EVT_NACK); | |
558 | if (!e) | |
559 | return QLA_FUNCTION_FAILED; | |
560 | ||
561 | e->u.nack.fcport = fcport; | |
562 | e->u.nack.type = type; | |
563 | memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp)); | |
564 | return qla2x00_post_work(vha, e); | |
565 | } | |
566 | ||
567 | static | |
568 | void qla2x00_async_nack_sp_done(void *s, int res) | |
569 | { | |
570 | struct srb *sp = (struct srb *)s; | |
571 | struct scsi_qla_host *vha = sp->vha; | |
572 | unsigned long flags; | |
573 | ||
574 | ql_dbg(ql_dbg_disc, vha, 0x20f2, | |
575 | "Async done-%s res %x %8phC type %d\n", | |
576 | sp->name, res, sp->fcport->port_name, sp->type); | |
577 | ||
578 | spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); | |
579 | sp->fcport->flags &= ~FCF_ASYNC_SENT; | |
580 | sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset; | |
581 | ||
582 | switch (sp->type) { | |
583 | case SRB_NACK_PLOGI: | |
584 | sp->fcport->login_gen++; | |
585 | sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP; | |
586 | sp->fcport->logout_on_delete = 1; | |
587 | sp->fcport->plogi_nack_done_deadline = jiffies + HZ; | |
588 | break; | |
589 | ||
590 | case SRB_NACK_PRLI: | |
591 | sp->fcport->fw_login_state = DSC_LS_PRLI_COMP; | |
592 | sp->fcport->deleted = 0; | |
593 | ||
594 | if (!sp->fcport->login_succ && | |
595 | !IS_SW_RESV_ADDR(sp->fcport->d_id)) { | |
596 | sp->fcport->login_succ = 1; | |
597 | ||
598 | vha->fcport_count++; | |
599 | ||
600 | if (!IS_IIDMA_CAPABLE(vha->hw) || | |
601 | !vha->hw->flags.gpsc_supported) { | |
602 | ql_dbg(ql_dbg_disc, vha, 0x20f3, | |
603 | "%s %d %8phC post upd_fcport fcp_cnt %d\n", | |
604 | __func__, __LINE__, | |
605 | sp->fcport->port_name, | |
606 | vha->fcport_count); | |
607 | ||
608 | qla24xx_post_upd_fcport_work(vha, sp->fcport); | |
609 | } else { | |
610 | ql_dbg(ql_dbg_disc, vha, 0x20f5, | |
611 | "%s %d %8phC post gpsc fcp_cnt %d\n", | |
612 | __func__, __LINE__, | |
613 | sp->fcport->port_name, | |
614 | vha->fcport_count); | |
615 | ||
616 | qla24xx_post_gpsc_work(vha, sp->fcport); | |
617 | } | |
618 | } | |
619 | break; | |
620 | ||
621 | case SRB_NACK_LOGO: | |
622 | sp->fcport->login_gen++; | |
623 | sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL; | |
624 | qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE); | |
625 | break; | |
626 | } | |
627 | spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); | |
628 | ||
629 | sp->free(sp); | |
630 | } | |
631 | ||
632 | int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport, | |
633 | struct imm_ntfy_from_isp *ntfy, int type) | |
634 | { | |
635 | int rval = QLA_FUNCTION_FAILED; | |
636 | srb_t *sp; | |
637 | char *c = NULL; | |
638 | ||
639 | fcport->flags |= FCF_ASYNC_SENT; | |
640 | switch (type) { | |
641 | case SRB_NACK_PLOGI: | |
642 | fcport->fw_login_state = DSC_LS_PLOGI_PEND; | |
643 | c = "PLOGI"; | |
644 | break; | |
645 | case SRB_NACK_PRLI: | |
646 | fcport->fw_login_state = DSC_LS_PRLI_PEND; | |
647 | fcport->deleted = 0; | |
648 | c = "PRLI"; | |
649 | break; | |
650 | case SRB_NACK_LOGO: | |
651 | fcport->fw_login_state = DSC_LS_LOGO_PEND; | |
652 | c = "LOGO"; | |
653 | break; | |
654 | } | |
655 | ||
656 | sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC); | |
657 | if (!sp) | |
658 | goto done; | |
659 | ||
660 | sp->type = type; | |
661 | sp->name = "nack"; | |
662 | ||
663 | qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2); | |
664 | ||
665 | sp->u.iocb_cmd.u.nack.ntfy = ntfy; | |
666 | ||
667 | sp->done = qla2x00_async_nack_sp_done; | |
668 | ||
669 | rval = qla2x00_start_sp(sp); | |
670 | if (rval != QLA_SUCCESS) | |
671 | goto done_free_sp; | |
672 | ||
673 | ql_dbg(ql_dbg_disc, vha, 0x20f4, | |
674 | "Async-%s %8phC hndl %x %s\n", | |
675 | sp->name, fcport->port_name, sp->handle, c); | |
676 | ||
677 | return rval; | |
678 | ||
679 | done_free_sp: | |
680 | sp->free(sp); | |
681 | done: | |
682 | fcport->flags &= ~FCF_ASYNC_SENT; | |
683 | return rval; | |
684 | } | |
685 | ||
686 | void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e) | |
687 | { | |
688 | fc_port_t *t; | |
689 | unsigned long flags; | |
690 | ||
691 | switch (e->u.nack.type) { | |
692 | case SRB_NACK_PRLI: | |
693 | mutex_lock(&vha->vha_tgt.tgt_mutex); | |
694 | t = qlt_create_sess(vha, e->u.nack.fcport, 0); | |
695 | mutex_unlock(&vha->vha_tgt.tgt_mutex); | |
696 | if (t) { | |
697 | ql_log(ql_log_info, vha, 0xd034, | |
698 | "%s create sess success %p", __func__, t); | |
699 | spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); | |
700 | /* create sess has an extra kref */ | |
701 | vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport); | |
702 | spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); | |
703 | } | |
704 | break; | |
705 | } | |
706 | qla24xx_async_notify_ack(vha, e->u.nack.fcport, | |
707 | (struct imm_ntfy_from_isp*)e->u.nack.iocb, e->u.nack.type); | |
708 | } | |
709 | ||
710 | void qla24xx_delete_sess_fn(struct work_struct *work) | |
711 | { | |
712 | fc_port_t *fcport = container_of(work, struct fc_port, del_work); | |
713 | struct qla_hw_data *ha = fcport->vha->hw; | |
714 | unsigned long flags; | |
715 | ||
716 | spin_lock_irqsave(&ha->tgt.sess_lock, flags); | |
717 | ||
718 | if (fcport->se_sess) { | |
719 | ha->tgt.tgt_ops->shutdown_sess(fcport); | |
720 | ha->tgt.tgt_ops->put_sess(fcport); | |
721 | } else { | |
722 | qlt_unreg_sess(fcport); | |
723 | } | |
724 | spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); | |
725 | } | |
726 | ||
727 | /* | |
728 | * Called from qla2x00_reg_remote_port() | |
729 | */ | |
730 | void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport) | |
731 | { | |
732 | struct qla_hw_data *ha = vha->hw; | |
733 | struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; | |
734 | struct fc_port *sess = fcport; | |
735 | unsigned long flags; | |
736 | ||
737 | if (!vha->hw->tgt.tgt_ops) | |
738 | return; | |
739 | ||
740 | spin_lock_irqsave(&ha->tgt.sess_lock, flags); | |
741 | if (tgt->tgt_stop) { | |
742 | spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); | |
743 | return; | |
744 | } | |
745 | ||
746 | if (fcport->disc_state == DSC_DELETE_PEND) { | |
747 | spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); | |
748 | return; | |
749 | } | |
750 | ||
751 | if (!sess->se_sess) { | |
752 | spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); | |
753 | ||
754 | mutex_lock(&vha->vha_tgt.tgt_mutex); | |
755 | sess = qlt_create_sess(vha, fcport, false); | |
756 | mutex_unlock(&vha->vha_tgt.tgt_mutex); | |
757 | ||
758 | spin_lock_irqsave(&ha->tgt.sess_lock, flags); | |
759 | } else { | |
760 | if (fcport->fw_login_state == DSC_LS_PRLI_COMP) { | |
761 | spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); | |
762 | return; | |
763 | } | |
764 | ||
765 | if (!kref_get_unless_zero(&sess->sess_kref)) { | |
766 | ql_dbg(ql_dbg_disc, vha, 0x2107, | |
767 | "%s: kref_get fail sess %8phC \n", | |
768 | __func__, sess->port_name); | |
769 | spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); | |
770 | return; | |
771 | } | |
772 | ||
773 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c, | |
774 | "qla_target(%u): %ssession for port %8phC " | |
775 | "(loop ID %d) reappeared\n", vha->vp_idx, | |
776 | sess->local ? "local " : "", sess->port_name, sess->loop_id); | |
777 | ||
778 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007, | |
779 | "Reappeared sess %p\n", sess); | |
780 | ||
781 | ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, | |
782 | fcport->loop_id, | |
783 | (fcport->flags & FCF_CONF_COMP_SUPPORTED)); | |
784 | } | |
785 | ||
786 | if (sess && sess->local) { | |
787 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d, | |
788 | "qla_target(%u): local session for " | |
789 | "port %8phC (loop ID %d) became global\n", vha->vp_idx, | |
790 | fcport->port_name, sess->loop_id); | |
791 | sess->local = 0; | |
792 | } | |
793 | ha->tgt.tgt_ops->put_sess(sess); | |
794 | spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); | |
795 | } | |
796 | ||
797 | /* | |
798 | * This is a zero-base ref-counting solution, since hardware_lock | |
799 | * guarantees that ref_count is not modified concurrently. | |
800 | * Upon successful return content of iocb is undefined | |
801 | */ | |
802 | static struct qlt_plogi_ack_t * | |
803 | qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id, | |
804 | struct imm_ntfy_from_isp *iocb) | |
805 | { | |
806 | struct qlt_plogi_ack_t *pla; | |
807 | ||
808 | list_for_each_entry(pla, &vha->plogi_ack_list, list) { | |
809 | if (pla->id.b24 == id->b24) { | |
810 | qlt_send_term_imm_notif(vha, &pla->iocb, 1); | |
811 | memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); | |
812 | return pla; | |
813 | } | |
814 | } | |
815 | ||
816 | pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC); | |
817 | if (!pla) { | |
818 | ql_dbg(ql_dbg_async, vha, 0x5088, | |
819 | "qla_target(%d): Allocation of plogi_ack failed\n", | |
820 | vha->vp_idx); | |
821 | return NULL; | |
822 | } | |
823 | ||
824 | memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); | |
825 | pla->id = *id; | |
826 | list_add_tail(&pla->list, &vha->plogi_ack_list); | |
827 | ||
828 | return pla; | |
829 | } | |
830 | ||
831 | void qlt_plogi_ack_unref(struct scsi_qla_host *vha, | |
832 | struct qlt_plogi_ack_t *pla) | |
833 | { | |
834 | struct imm_ntfy_from_isp *iocb = &pla->iocb; | |
835 | port_id_t port_id; | |
836 | uint16_t loop_id; | |
837 | fc_port_t *fcport = pla->fcport; | |
838 | ||
839 | BUG_ON(!pla->ref_count); | |
840 | pla->ref_count--; | |
841 | ||
842 | if (pla->ref_count) | |
843 | return; | |
844 | ||
845 | ql_dbg(ql_dbg_disc, vha, 0x5089, | |
846 | "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x" | |
847 | " exch %#x ox_id %#x\n", iocb->u.isp24.port_name, | |
848 | iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1], | |
849 | iocb->u.isp24.port_id[0], | |
850 | le16_to_cpu(iocb->u.isp24.nport_handle), | |
851 | iocb->u.isp24.exchange_address, iocb->ox_id); | |
852 | ||
853 | port_id.b.domain = iocb->u.isp24.port_id[2]; | |
854 | port_id.b.area = iocb->u.isp24.port_id[1]; | |
855 | port_id.b.al_pa = iocb->u.isp24.port_id[0]; | |
856 | port_id.b.rsvd_1 = 0; | |
857 | ||
858 | loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); | |
859 | ||
860 | fcport->loop_id = loop_id; | |
861 | fcport->d_id = port_id; | |
862 | qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI); | |
863 | ||
864 | list_for_each_entry(fcport, &vha->vp_fcports, list) { | |
865 | if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla) | |
866 | fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; | |
867 | if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla) | |
868 | fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; | |
869 | } | |
870 | ||
871 | list_del(&pla->list); | |
872 | kmem_cache_free(qla_tgt_plogi_cachep, pla); | |
873 | } | |
874 | ||
875 | void | |
876 | qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla, | |
877 | struct fc_port *sess, enum qlt_plogi_link_t link) | |
878 | { | |
879 | struct imm_ntfy_from_isp *iocb = &pla->iocb; | |
880 | /* Inc ref_count first because link might already be pointing at pla */ | |
881 | pla->ref_count++; | |
882 | ||
883 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097, | |
884 | "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC" | |
885 | " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n", | |
886 | sess, link, sess->port_name, | |
887 | iocb->u.isp24.port_name, iocb->u.isp24.port_id[2], | |
888 | iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], | |
889 | pla->ref_count, pla, link); | |
890 | ||
891 | if (sess->plogi_link[link]) | |
892 | qlt_plogi_ack_unref(vha, sess->plogi_link[link]); | |
893 | ||
894 | if (link == QLT_PLOGI_LINK_SAME_WWN) | |
895 | pla->fcport = sess; | |
896 | ||
897 | sess->plogi_link[link] = pla; | |
898 | } | |
899 | ||
900 | typedef struct { | |
901 | /* These fields must be initialized by the caller */ | |
902 | port_id_t id; | |
903 | /* | |
904 | * number of cmds dropped while we were waiting for | |
905 | * initiator to ack LOGO initialize to 1 if LOGO is | |
906 | * triggered by a command, otherwise, to 0 | |
907 | */ | |
908 | int cmd_count; | |
909 | ||
910 | /* These fields are used by callee */ | |
911 | struct list_head list; | |
912 | } qlt_port_logo_t; | |
913 | ||
914 | static void | |
915 | qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo) | |
916 | { | |
917 | qlt_port_logo_t *tmp; | |
918 | int res; | |
919 | ||
920 | mutex_lock(&vha->vha_tgt.tgt_mutex); | |
921 | ||
922 | list_for_each_entry(tmp, &vha->logo_list, list) { | |
923 | if (tmp->id.b24 == logo->id.b24) { | |
924 | tmp->cmd_count += logo->cmd_count; | |
925 | mutex_unlock(&vha->vha_tgt.tgt_mutex); | |
926 | return; | |
927 | } | |
928 | } | |
929 | ||
930 | list_add_tail(&logo->list, &vha->logo_list); | |
931 | ||
932 | mutex_unlock(&vha->vha_tgt.tgt_mutex); | |
933 | ||
934 | res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id); | |
935 | ||
936 | mutex_lock(&vha->vha_tgt.tgt_mutex); | |
937 | list_del(&logo->list); | |
938 | mutex_unlock(&vha->vha_tgt.tgt_mutex); | |
939 | ||
940 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098, | |
941 | "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n", | |
942 | logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa, | |
943 | logo->cmd_count, res); | |
944 | } | |
945 | ||
946 | static void qlt_free_session_done(struct work_struct *work) | |
947 | { | |
948 | struct fc_port *sess = container_of(work, struct fc_port, | |
949 | free_work); | |
950 | struct qla_tgt *tgt = sess->tgt; | |
951 | struct scsi_qla_host *vha = sess->vha; | |
952 | struct qla_hw_data *ha = vha->hw; | |
953 | unsigned long flags; | |
954 | bool logout_started = false; | |
955 | struct event_arg ea; | |
956 | scsi_qla_host_t *base_vha; | |
957 | ||
958 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf084, | |
959 | "%s: se_sess %p / sess %p from port %8phC loop_id %#04x" | |
960 | " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n", | |
961 | __func__, sess->se_sess, sess, sess->port_name, sess->loop_id, | |
962 | sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa, | |
963 | sess->logout_on_delete, sess->keep_nport_handle, | |
964 | sess->send_els_logo); | |
965 | ||
966 | if (!IS_SW_RESV_ADDR(sess->d_id)) { | |
967 | if (sess->send_els_logo) { | |
968 | qlt_port_logo_t logo; | |
969 | ||
970 | logo.id = sess->d_id; | |
971 | logo.cmd_count = 0; | |
972 | qlt_send_first_logo(vha, &logo); | |
973 | } | |
974 | ||
975 | if (sess->logout_on_delete) { | |
976 | int rc; | |
977 | ||
978 | rc = qla2x00_post_async_logout_work(vha, sess, NULL); | |
979 | if (rc != QLA_SUCCESS) | |
980 | ql_log(ql_log_warn, vha, 0xf085, | |
981 | "Schedule logo failed sess %p rc %d\n", | |
982 | sess, rc); | |
983 | else | |
984 | logout_started = true; | |
985 | } | |
986 | } | |
987 | ||
988 | /* | |
989 | * Release the target session for FC Nexus from fabric module code. | |
990 | */ | |
991 | if (sess->se_sess != NULL) | |
992 | ha->tgt.tgt_ops->free_session(sess); | |
993 | ||
994 | if (logout_started) { | |
995 | bool traced = false; | |
996 | ||
997 | while (!ACCESS_ONCE(sess->logout_completed)) { | |
998 | if (!traced) { | |
999 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf086, | |
1000 | "%s: waiting for sess %p logout\n", | |
1001 | __func__, sess); | |
1002 | traced = true; | |
1003 | } | |
1004 | msleep(100); | |
1005 | } | |
1006 | ||
1007 | ql_dbg(ql_dbg_disc, vha, 0xf087, | |
1008 | "%s: sess %p logout completed\n",__func__, sess); | |
1009 | } | |
1010 | ||
1011 | if (sess->logo_ack_needed) { | |
1012 | sess->logo_ack_needed = 0; | |
1013 | qla24xx_async_notify_ack(vha, sess, | |
1014 | (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO); | |
1015 | } | |
1016 | ||
1017 | spin_lock_irqsave(&ha->tgt.sess_lock, flags); | |
1018 | if (sess->se_sess) { | |
1019 | sess->se_sess = NULL; | |
1020 | if (tgt && !IS_SW_RESV_ADDR(sess->d_id)) | |
1021 | tgt->sess_count--; | |
1022 | } | |
1023 | ||
1024 | sess->disc_state = DSC_DELETED; | |
1025 | sess->fw_login_state = DSC_LS_PORT_UNAVAIL; | |
1026 | sess->deleted = QLA_SESS_DELETED; | |
1027 | sess->login_retry = vha->hw->login_retry_count; | |
1028 | ||
1029 | if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) { | |
1030 | vha->fcport_count--; | |
1031 | sess->login_succ = 0; | |
1032 | } | |
1033 | ||
1034 | if (sess->chip_reset != ha->base_qpair->chip_reset) | |
1035 | qla2x00_clear_loop_id(sess); | |
1036 | ||
1037 | if (sess->conflict) { | |
1038 | sess->conflict->login_pause = 0; | |
1039 | sess->conflict = NULL; | |
1040 | if (!test_bit(UNLOADING, &vha->dpc_flags)) | |
1041 | set_bit(RELOGIN_NEEDED, &vha->dpc_flags); | |
1042 | } | |
1043 | ||
1044 | { | |
1045 | struct qlt_plogi_ack_t *own = | |
1046 | sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; | |
1047 | struct qlt_plogi_ack_t *con = | |
1048 | sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]; | |
1049 | struct imm_ntfy_from_isp *iocb; | |
1050 | ||
1051 | if (con) { | |
1052 | iocb = &con->iocb; | |
1053 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099, | |
1054 | "se_sess %p / sess %p port %8phC is gone," | |
1055 | " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n", | |
1056 | sess->se_sess, sess, sess->port_name, | |
1057 | own ? "releasing own PLOGI" : "no own PLOGI pending", | |
1058 | own ? own->ref_count : -1, | |
1059 | iocb->u.isp24.port_name, con->ref_count); | |
1060 | qlt_plogi_ack_unref(vha, con); | |
1061 | sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; | |
1062 | } else { | |
1063 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a, | |
1064 | "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n", | |
1065 | sess->se_sess, sess, sess->port_name, | |
1066 | own ? "releasing own PLOGI" : | |
1067 | "no own PLOGI pending", | |
1068 | own ? own->ref_count : -1); | |
1069 | } | |
1070 | ||
1071 | if (own) { | |
1072 | sess->fw_login_state = DSC_LS_PLOGI_PEND; | |
1073 | qlt_plogi_ack_unref(vha, own); | |
1074 | sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; | |
1075 | } | |
1076 | } | |
1077 | spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); | |
1078 | ||
1079 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001, | |
1080 | "Unregistration of sess %p %8phC finished fcp_cnt %d\n", | |
1081 | sess, sess->port_name, vha->fcport_count); | |
1082 | ||
1083 | if (tgt && (tgt->sess_count == 0)) | |
1084 | wake_up_all(&tgt->waitQ); | |
1085 | ||
1086 | if (vha->fcport_count == 0) | |
1087 | wake_up_all(&vha->fcport_waitQ); | |
1088 | ||
1089 | base_vha = pci_get_drvdata(ha->pdev); | |
1090 | if (test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags)) | |
1091 | return; | |
1092 | ||
1093 | if (!tgt || !tgt->tgt_stop) { | |
1094 | memset(&ea, 0, sizeof(ea)); | |
1095 | ea.event = FCME_DELETE_DONE; | |
1096 | ea.fcport = sess; | |
1097 | qla2x00_fcport_event_handler(vha, &ea); | |
1098 | } | |
1099 | } | |
1100 | ||
1101 | /* ha->tgt.sess_lock supposed to be held on entry */ | |
1102 | void qlt_unreg_sess(struct fc_port *sess) | |
1103 | { | |
1104 | struct scsi_qla_host *vha = sess->vha; | |
1105 | ||
1106 | ql_dbg(ql_dbg_disc, sess->vha, 0x210a, | |
1107 | "%s sess %p for deletion %8phC\n", | |
1108 | __func__, sess, sess->port_name); | |
1109 | ||
1110 | if (sess->se_sess) | |
1111 | vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); | |
1112 | ||
1113 | qla2x00_mark_device_lost(vha, sess, 1, 1); | |
1114 | ||
1115 | sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; | |
1116 | sess->disc_state = DSC_DELETE_PEND; | |
1117 | sess->last_rscn_gen = sess->rscn_gen; | |
1118 | sess->last_login_gen = sess->login_gen; | |
1119 | ||
1120 | if (sess->nvme_flag & NVME_FLAG_REGISTERED) | |
1121 | schedule_work(&sess->nvme_del_work); | |
1122 | ||
1123 | INIT_WORK(&sess->free_work, qlt_free_session_done); | |
1124 | schedule_work(&sess->free_work); | |
1125 | } | |
1126 | EXPORT_SYMBOL(qlt_unreg_sess); | |
1127 | ||
1128 | static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) | |
1129 | { | |
1130 | struct qla_hw_data *ha = vha->hw; | |
1131 | struct fc_port *sess = NULL; | |
1132 | uint16_t loop_id; | |
1133 | int res = 0; | |
1134 | struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb; | |
1135 | unsigned long flags; | |
1136 | ||
1137 | loop_id = le16_to_cpu(n->u.isp24.nport_handle); | |
1138 | if (loop_id == 0xFFFF) { | |
1139 | /* Global event */ | |
1140 | atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); | |
1141 | spin_lock_irqsave(&ha->tgt.sess_lock, flags); | |
1142 | qlt_clear_tgt_db(vha->vha_tgt.qla_tgt); | |
1143 | spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); | |
1144 | } else { | |
1145 | spin_lock_irqsave(&ha->tgt.sess_lock, flags); | |
1146 | sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); | |
1147 | spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); | |
1148 | } | |
1149 | ||
1150 | ql_dbg(ql_dbg_tgt, vha, 0xe000, | |
1151 | "Using sess for qla_tgt_reset: %p\n", sess); | |
1152 | if (!sess) { | |
1153 | res = -ESRCH; | |
1154 | return res; | |
1155 | } | |
1156 | ||
1157 | ql_dbg(ql_dbg_tgt, vha, 0xe047, | |
1158 | "scsi(%ld): resetting (session %p from port %8phC mcmd %x, " | |
1159 | "loop_id %d)\n", vha->host_no, sess, sess->port_name, | |
1160 | mcmd, loop_id); | |
1161 | ||
1162 | return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK); | |
1163 | } | |
1164 | ||
1165 | static void qla24xx_chk_fcp_state(struct fc_port *sess) | |
1166 | { | |
1167 | if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) { | |
1168 | sess->logout_on_delete = 0; | |
1169 | sess->logo_ack_needed = 0; | |
1170 | sess->fw_login_state = DSC_LS_PORT_UNAVAIL; | |
1171 | sess->scan_state = 0; | |
1172 | } | |
1173 | } | |
1174 | ||
1175 | /* ha->tgt.sess_lock supposed to be held on entry */ | |
1176 | void qlt_schedule_sess_for_deletion(struct fc_port *sess, | |
1177 | bool immediate) | |
1178 | { | |
1179 | struct qla_tgt *tgt = sess->tgt; | |
1180 | ||
1181 | if (sess->disc_state == DSC_DELETE_PEND) | |
1182 | return; | |
1183 | ||
1184 | if (sess->disc_state == DSC_DELETED) { | |
1185 | if (tgt && tgt->tgt_stop && (tgt->sess_count == 0)) | |
1186 | wake_up_all(&tgt->waitQ); | |
1187 | if (sess->vha->fcport_count == 0) | |
1188 | wake_up_all(&sess->vha->fcport_waitQ); | |
1189 | ||
1190 | if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] && | |
1191 | !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) | |
1192 | return; | |
1193 | } | |
1194 | ||
1195 | sess->disc_state = DSC_DELETE_PEND; | |
1196 | ||
1197 | if (sess->deleted == QLA_SESS_DELETED) | |
1198 | sess->logout_on_delete = 0; | |
1199 | ||
1200 | sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; | |
1201 | qla24xx_chk_fcp_state(sess); | |
1202 | ||
1203 | ql_dbg(ql_dbg_tgt, sess->vha, 0xe001, | |
1204 | "Scheduling sess %p for deletion\n", sess); | |
1205 | ||
1206 | schedule_work(&sess->del_work); | |
1207 | } | |
1208 | ||
1209 | void qlt_schedule_sess_for_deletion_lock(struct fc_port *sess) | |
1210 | { | |
1211 | unsigned long flags; | |
1212 | struct qla_hw_data *ha = sess->vha->hw; | |
1213 | spin_lock_irqsave(&ha->tgt.sess_lock, flags); | |
1214 | qlt_schedule_sess_for_deletion(sess, 1); | |
1215 | spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); | |
1216 | } | |
1217 | ||
1218 | /* ha->tgt.sess_lock supposed to be held on entry */ | |
1219 | static void qlt_clear_tgt_db(struct qla_tgt *tgt) | |
1220 | { | |
1221 | struct fc_port *sess; | |
1222 | scsi_qla_host_t *vha = tgt->vha; | |
1223 | ||
1224 | list_for_each_entry(sess, &vha->vp_fcports, list) { | |
1225 | if (sess->se_sess) | |
1226 | qlt_schedule_sess_for_deletion(sess, 1); | |
1227 | } | |
1228 | ||
1229 | /* At this point tgt could be already dead */ | |
1230 | } | |
1231 | ||
1232 | static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id, | |
1233 | uint16_t *loop_id) | |
1234 | { | |
1235 | struct qla_hw_data *ha = vha->hw; | |
1236 | dma_addr_t gid_list_dma; | |
1237 | struct gid_list_info *gid_list; | |
1238 | char *id_iter; | |
1239 | int res, rc, i; | |
1240 | uint16_t entries; | |
1241 | ||
1242 | gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), | |
1243 | &gid_list_dma, GFP_KERNEL); | |
1244 | if (!gid_list) { | |
1245 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044, | |
1246 | "qla_target(%d): DMA Alloc failed of %u\n", | |
1247 | vha->vp_idx, qla2x00_gid_list_size(ha)); | |
1248 | return -ENOMEM; | |
1249 | } | |
1250 | ||
1251 | /* Get list of logged in devices */ | |
1252 | rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries); | |
1253 | if (rc != QLA_SUCCESS) { | |
1254 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045, | |
1255 | "qla_target(%d): get_id_list() failed: %x\n", | |
1256 | vha->vp_idx, rc); | |
1257 | res = -EBUSY; | |
1258 | goto out_free_id_list; | |
1259 | } | |
1260 | ||
1261 | id_iter = (char *)gid_list; | |
1262 | res = -ENOENT; | |
1263 | for (i = 0; i < entries; i++) { | |
1264 | struct gid_list_info *gid = (struct gid_list_info *)id_iter; | |
1265 | if ((gid->al_pa == s_id[2]) && | |
1266 | (gid->area == s_id[1]) && | |
1267 | (gid->domain == s_id[0])) { | |
1268 | *loop_id = le16_to_cpu(gid->loop_id); | |
1269 | res = 0; | |
1270 | break; | |
1271 | } | |
1272 | id_iter += ha->gid_list_info_size; | |
1273 | } | |
1274 | ||
1275 | out_free_id_list: | |
1276 | dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), | |
1277 | gid_list, gid_list_dma); | |
1278 | return res; | |
1279 | } | |
1280 | ||
1281 | /* | |
1282 | * Adds an extra ref to allow to drop hw lock after adding sess to the list. | |
1283 | * Caller must put it. | |
1284 | */ | |
1285 | static struct fc_port *qlt_create_sess( | |
1286 | struct scsi_qla_host *vha, | |
1287 | fc_port_t *fcport, | |
1288 | bool local) | |
1289 | { | |
1290 | struct qla_hw_data *ha = vha->hw; | |
1291 | struct fc_port *sess = fcport; | |
1292 | unsigned long flags; | |
1293 | ||
1294 | if (vha->vha_tgt.qla_tgt->tgt_stop) | |
1295 | return NULL; | |
1296 | ||
1297 | if (fcport->se_sess) { | |
1298 | if (!kref_get_unless_zero(&sess->sess_kref)) { | |
1299 | ql_dbg(ql_dbg_disc, vha, 0x20f6, | |
1300 | "%s: kref_get_unless_zero failed for %8phC\n", | |
1301 | __func__, sess->port_name); | |
1302 | return NULL; | |
1303 | } | |
1304 | return fcport; | |
1305 | } | |
1306 | sess->tgt = vha->vha_tgt.qla_tgt; | |
1307 | sess->local = local; | |
1308 | ||
1309 | /* | |
1310 | * Under normal circumstances we want to logout from firmware when | |
1311 | * session eventually ends and release corresponding nport handle. | |
1312 | * In the exception cases (e.g. when new PLOGI is waiting) corresponding | |
1313 | * code will adjust these flags as necessary. | |
1314 | */ | |
1315 | sess->logout_on_delete = 1; | |
1316 | sess->keep_nport_handle = 0; | |
1317 | sess->logout_completed = 0; | |
1318 | ||
1319 | if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, | |
1320 | &fcport->port_name[0], sess) < 0) { | |
1321 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015, | |
1322 | "(%d) %8phC check_initiator_node_acl failed\n", | |
1323 | vha->vp_idx, fcport->port_name); | |
1324 | return NULL; | |
1325 | } else { | |
1326 | kref_init(&fcport->sess_kref); | |
1327 | /* | |
1328 | * Take an extra reference to ->sess_kref here to handle | |
1329 | * fc_port access across ->tgt.sess_lock reaquire. | |
1330 | */ | |
1331 | if (!kref_get_unless_zero(&sess->sess_kref)) { | |
1332 | ql_dbg(ql_dbg_disc, vha, 0x20f7, | |
1333 | "%s: kref_get_unless_zero failed for %8phC\n", | |
1334 | __func__, sess->port_name); | |
1335 | return NULL; | |
1336 | } | |
1337 | ||
1338 | spin_lock_irqsave(&ha->tgt.sess_lock, flags); | |
1339 | if (!IS_SW_RESV_ADDR(sess->d_id)) | |
1340 | vha->vha_tgt.qla_tgt->sess_count++; | |
1341 | ||
1342 | qlt_do_generation_tick(vha, &sess->generation); | |
1343 | spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); | |
1344 | } | |
1345 | ||
1346 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006, | |
1347 | "Adding sess %p se_sess %p to tgt %p sess_count %d\n", | |
1348 | sess, sess->se_sess, vha->vha_tgt.qla_tgt, | |
1349 | vha->vha_tgt.qla_tgt->sess_count); | |
1350 | ||
1351 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b, | |
1352 | "qla_target(%d): %ssession for wwn %8phC (loop_id %d, " | |
1353 | "s_id %x:%x:%x, confirmed completion %ssupported) added\n", | |
1354 | vha->vp_idx, local ? "local " : "", fcport->port_name, | |
1355 | fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area, | |
1356 | sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not "); | |
1357 | ||
1358 | return sess; | |
1359 | } | |
1360 | ||
1361 | /* | |
1362 | * max_gen - specifies maximum session generation | |
1363 | * at which this deletion requestion is still valid | |
1364 | */ | |
1365 | void | |
1366 | qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen) | |
1367 | { | |
1368 | struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; | |
1369 | struct fc_port *sess = fcport; | |
1370 | unsigned long flags; | |
1371 | ||
1372 | if (!vha->hw->tgt.tgt_ops) | |
1373 | return; | |
1374 | ||
1375 | if (!tgt) | |
1376 | return; | |
1377 | ||
1378 | spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); | |
1379 | if (tgt->tgt_stop) { | |
1380 | spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); | |
1381 | return; | |
1382 | } | |
1383 | if (!sess->se_sess) { | |
1384 | spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); | |
1385 | return; | |
1386 | } | |
1387 | ||
1388 | if (max_gen - sess->generation < 0) { | |
1389 | spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); | |
1390 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092, | |
1391 | "Ignoring stale deletion request for se_sess %p / sess %p" | |
1392 | " for port %8phC, req_gen %d, sess_gen %d\n", | |
1393 | sess->se_sess, sess, sess->port_name, max_gen, | |
1394 | sess->generation); | |
1395 | return; | |
1396 | } | |
1397 | ||
1398 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess); | |
1399 | ||
1400 | sess->local = 1; | |
1401 | qlt_schedule_sess_for_deletion(sess, false); | |
1402 | spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); | |
1403 | } | |
1404 | ||
1405 | static inline int test_tgt_sess_count(struct qla_tgt *tgt) | |
1406 | { | |
1407 | struct qla_hw_data *ha = tgt->ha; | |
1408 | unsigned long flags; | |
1409 | int res; | |
1410 | /* | |
1411 | * We need to protect against race, when tgt is freed before or | |
1412 | * inside wake_up() | |
1413 | */ | |
1414 | spin_lock_irqsave(&ha->tgt.sess_lock, flags); | |
1415 | ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002, | |
1416 | "tgt %p, sess_count=%d\n", | |
1417 | tgt, tgt->sess_count); | |
1418 | res = (tgt->sess_count == 0); | |
1419 | spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); | |
1420 | ||
1421 | return res; | |
1422 | } | |
1423 | ||
1424 | /* Called by tcm_qla2xxx configfs code */ | |
1425 | int qlt_stop_phase1(struct qla_tgt *tgt) | |
1426 | { | |
1427 | struct scsi_qla_host *vha = tgt->vha; | |
1428 | struct qla_hw_data *ha = tgt->ha; | |
1429 | unsigned long flags; | |
1430 | ||
1431 | mutex_lock(&qla_tgt_mutex); | |
1432 | if (!vha->fc_vport) { | |
1433 | struct Scsi_Host *sh = vha->host; | |
1434 | struct fc_host_attrs *fc_host = shost_to_fc_host(sh); | |
1435 | bool npiv_vports; | |
1436 | ||
1437 | spin_lock_irqsave(sh->host_lock, flags); | |
1438 | npiv_vports = (fc_host->npiv_vports_inuse); | |
1439 | spin_unlock_irqrestore(sh->host_lock, flags); | |
1440 | ||
1441 | if (npiv_vports) { | |
1442 | mutex_unlock(&qla_tgt_mutex); | |
1443 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021, | |
1444 | "NPIV is in use. Can not stop target\n"); | |
1445 | return -EPERM; | |
1446 | } | |
1447 | } | |
1448 | if (tgt->tgt_stop || tgt->tgt_stopped) { | |
1449 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e, | |
1450 | "Already in tgt->tgt_stop or tgt_stopped state\n"); | |
1451 | mutex_unlock(&qla_tgt_mutex); | |
1452 | return -EPERM; | |
1453 | } | |
1454 | ||
1455 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n", | |
1456 | vha->host_no, vha); | |
1457 | /* | |
1458 | * Mutex needed to sync with qla_tgt_fc_port_[added,deleted]. | |
1459 | * Lock is needed, because we still can get an incoming packet. | |
1460 | */ | |
1461 | mutex_lock(&vha->vha_tgt.tgt_mutex); | |
1462 | spin_lock_irqsave(&ha->tgt.sess_lock, flags); | |
1463 | tgt->tgt_stop = 1; | |
1464 | qlt_clear_tgt_db(tgt); | |
1465 | spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); | |
1466 | mutex_unlock(&vha->vha_tgt.tgt_mutex); | |
1467 | mutex_unlock(&qla_tgt_mutex); | |
1468 | ||
1469 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009, | |
1470 | "Waiting for sess works (tgt %p)", tgt); | |
1471 | spin_lock_irqsave(&tgt->sess_work_lock, flags); | |
1472 | while (!list_empty(&tgt->sess_works_list)) { | |
1473 | spin_unlock_irqrestore(&tgt->sess_work_lock, flags); | |
1474 | flush_scheduled_work(); | |
1475 | spin_lock_irqsave(&tgt->sess_work_lock, flags); | |
1476 | } | |
1477 | spin_unlock_irqrestore(&tgt->sess_work_lock, flags); | |
1478 | ||
1479 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a, | |
1480 | "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count); | |
1481 | ||
1482 | wait_event(tgt->waitQ, test_tgt_sess_count(tgt)); | |
1483 | ||
1484 | /* Big hammer */ | |
1485 | if (!ha->flags.host_shutting_down && | |
1486 | (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))) | |
1487 | qlt_disable_vha(vha); | |
1488 | ||
1489 | /* Wait for sessions to clear out (just in case) */ | |
1490 | wait_event(tgt->waitQ, test_tgt_sess_count(tgt)); | |
1491 | return 0; | |
1492 | } | |
1493 | EXPORT_SYMBOL(qlt_stop_phase1); | |
1494 | ||
1495 | /* Called by tcm_qla2xxx configfs code */ | |
1496 | void qlt_stop_phase2(struct qla_tgt *tgt) | |
1497 | { | |
1498 | scsi_qla_host_t *vha = tgt->vha; | |
1499 | ||
1500 | if (tgt->tgt_stopped) { | |
1501 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f, | |
1502 | "Already in tgt->tgt_stopped state\n"); | |
1503 | dump_stack(); | |
1504 | return; | |
1505 | } | |
1506 | if (!tgt->tgt_stop) { | |
1507 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b, | |
1508 | "%s: phase1 stop is not completed\n", __func__); | |
1509 | dump_stack(); | |
1510 | return; | |
1511 | } | |
1512 | ||
1513 | mutex_lock(&vha->vha_tgt.tgt_mutex); | |
1514 | tgt->tgt_stop = 0; | |
1515 | tgt->tgt_stopped = 1; | |
1516 | mutex_unlock(&vha->vha_tgt.tgt_mutex); | |
1517 | ||
1518 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n", | |
1519 | tgt); | |
1520 | } | |
1521 | EXPORT_SYMBOL(qlt_stop_phase2); | |
1522 | ||
1523 | /* Called from qlt_remove_target() -> qla2x00_remove_one() */ | |
1524 | static void qlt_release(struct qla_tgt *tgt) | |
1525 | { | |
1526 | scsi_qla_host_t *vha = tgt->vha; | |
1527 | void *node; | |
1528 | u64 key = 0; | |
1529 | u16 i; | |
1530 | struct qla_qpair_hint *h; | |
1531 | ||
1532 | if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stop && | |
1533 | !tgt->tgt_stopped) | |
1534 | qlt_stop_phase1(tgt); | |
1535 | ||
1536 | if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped) | |
1537 | qlt_stop_phase2(tgt); | |
1538 | ||
1539 | for (i = 0; i < vha->hw->max_qpairs + 1; i++) { | |
1540 | unsigned long flags; | |
1541 | ||
1542 | h = &tgt->qphints[i]; | |
1543 | if (h->qpair) { | |
1544 | spin_lock_irqsave(h->qpair->qp_lock_ptr, flags); | |
1545 | list_del(&h->hint_elem); | |
1546 | spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags); | |
1547 | h->qpair = NULL; | |
1548 | } | |
1549 | } | |
1550 | kfree(tgt->qphints); | |
1551 | ||
1552 | btree_for_each_safe64(&tgt->lun_qpair_map, key, node) | |
1553 | btree_remove64(&tgt->lun_qpair_map, key); | |
1554 | ||
1555 | btree_destroy64(&tgt->lun_qpair_map); | |
1556 | ||
1557 | vha->vha_tgt.qla_tgt = NULL; | |
1558 | ||
1559 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d, | |
1560 | "Release of tgt %p finished\n", tgt); | |
1561 | ||
1562 | kfree(tgt); | |
1563 | } | |
1564 | ||
1565 | /* ha->hardware_lock supposed to be held on entry */ | |
1566 | static int qlt_sched_sess_work(struct qla_tgt *tgt, int type, | |
1567 | const void *param, unsigned int param_size) | |
1568 | { | |
1569 | struct qla_tgt_sess_work_param *prm; | |
1570 | unsigned long flags; | |
1571 | ||
1572 | prm = kzalloc(sizeof(*prm), GFP_ATOMIC); | |
1573 | if (!prm) { | |
1574 | ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050, | |
1575 | "qla_target(%d): Unable to create session " | |
1576 | "work, command will be refused", 0); | |
1577 | return -ENOMEM; | |
1578 | } | |
1579 | ||
1580 | ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e, | |
1581 | "Scheduling work (type %d, prm %p)" | |
1582 | " to find session for param %p (size %d, tgt %p)\n", | |
1583 | type, prm, param, param_size, tgt); | |
1584 | ||
1585 | prm->type = type; | |
1586 | memcpy(&prm->tm_iocb, param, param_size); | |
1587 | ||
1588 | spin_lock_irqsave(&tgt->sess_work_lock, flags); | |
1589 | list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list); | |
1590 | spin_unlock_irqrestore(&tgt->sess_work_lock, flags); | |
1591 | ||
1592 | schedule_work(&tgt->sess_work); | |
1593 | ||
1594 | return 0; | |
1595 | } | |
1596 | ||
1597 | /* | |
1598 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire | |
1599 | */ | |
1600 | static void qlt_send_notify_ack(struct qla_qpair *qpair, | |
1601 | struct imm_ntfy_from_isp *ntfy, | |
1602 | uint32_t add_flags, uint16_t resp_code, int resp_code_valid, | |
1603 | uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan) | |
1604 | { | |
1605 | struct scsi_qla_host *vha = qpair->vha; | |
1606 | struct qla_hw_data *ha = vha->hw; | |
1607 | request_t *pkt; | |
1608 | struct nack_to_isp *nack; | |
1609 | ||
1610 | if (!ha->flags.fw_started) | |
1611 | return; | |
1612 | ||
1613 | ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha); | |
1614 | ||
1615 | pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); | |
1616 | if (!pkt) { | |
1617 | ql_dbg(ql_dbg_tgt, vha, 0xe049, | |
1618 | "qla_target(%d): %s failed: unable to allocate " | |
1619 | "request packet\n", vha->vp_idx, __func__); | |
1620 | return; | |
1621 | } | |
1622 | ||
1623 | if (vha->vha_tgt.qla_tgt != NULL) | |
1624 | vha->vha_tgt.qla_tgt->notify_ack_expected++; | |
1625 | ||
1626 | pkt->entry_type = NOTIFY_ACK_TYPE; | |
1627 | pkt->entry_count = 1; | |
1628 | ||
1629 | nack = (struct nack_to_isp *)pkt; | |
1630 | nack->ox_id = ntfy->ox_id; | |
1631 | ||
1632 | nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE; | |
1633 | nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; | |
1634 | if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { | |
1635 | nack->u.isp24.flags = ntfy->u.isp24.flags & | |
1636 | cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB); | |
1637 | } | |
1638 | nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; | |
1639 | nack->u.isp24.status = ntfy->u.isp24.status; | |
1640 | nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; | |
1641 | nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; | |
1642 | nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; | |
1643 | nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; | |
1644 | nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; | |
1645 | nack->u.isp24.srr_flags = cpu_to_le16(srr_flags); | |
1646 | nack->u.isp24.srr_reject_code = srr_reject_code; | |
1647 | nack->u.isp24.srr_reject_code_expl = srr_explan; | |
1648 | nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; | |
1649 | ||
1650 | ql_dbg(ql_dbg_tgt, vha, 0xe005, | |
1651 | "qla_target(%d): Sending 24xx Notify Ack %d\n", | |
1652 | vha->vp_idx, nack->u.isp24.status); | |
1653 | ||
1654 | /* Memory Barrier */ | |
1655 | wmb(); | |
1656 | qla2x00_start_iocbs(vha, qpair->req); | |
1657 | } | |
1658 | ||
1659 | /* | |
1660 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire | |
1661 | */ | |
1662 | static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair, | |
1663 | struct abts_recv_from_24xx *abts, uint32_t status, | |
1664 | bool ids_reversed) | |
1665 | { | |
1666 | struct scsi_qla_host *vha = qpair->vha; | |
1667 | struct qla_hw_data *ha = vha->hw; | |
1668 | struct abts_resp_to_24xx *resp; | |
1669 | uint32_t f_ctl; | |
1670 | uint8_t *p; | |
1671 | ||
1672 | ql_dbg(ql_dbg_tgt, vha, 0xe006, | |
1673 | "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n", | |
1674 | ha, abts, status); | |
1675 | ||
1676 | resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, | |
1677 | NULL); | |
1678 | if (!resp) { | |
1679 | ql_dbg(ql_dbg_tgt, vha, 0xe04a, | |
1680 | "qla_target(%d): %s failed: unable to allocate " | |
1681 | "request packet", vha->vp_idx, __func__); | |
1682 | return; | |
1683 | } | |
1684 | ||
1685 | resp->entry_type = ABTS_RESP_24XX; | |
1686 | resp->entry_count = 1; | |
1687 | resp->nport_handle = abts->nport_handle; | |
1688 | resp->vp_index = vha->vp_idx; | |
1689 | resp->sof_type = abts->sof_type; | |
1690 | resp->exchange_address = abts->exchange_address; | |
1691 | resp->fcp_hdr_le = abts->fcp_hdr_le; | |
1692 | f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | | |
1693 | F_CTL_LAST_SEQ | F_CTL_END_SEQ | | |
1694 | F_CTL_SEQ_INITIATIVE); | |
1695 | p = (uint8_t *)&f_ctl; | |
1696 | resp->fcp_hdr_le.f_ctl[0] = *p++; | |
1697 | resp->fcp_hdr_le.f_ctl[1] = *p++; | |
1698 | resp->fcp_hdr_le.f_ctl[2] = *p; | |
1699 | if (ids_reversed) { | |
1700 | resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0]; | |
1701 | resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1]; | |
1702 | resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2]; | |
1703 | resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0]; | |
1704 | resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1]; | |
1705 | resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2]; | |
1706 | } else { | |
1707 | resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0]; | |
1708 | resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1]; | |
1709 | resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2]; | |
1710 | resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0]; | |
1711 | resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1]; | |
1712 | resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2]; | |
1713 | } | |
1714 | resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; | |
1715 | if (status == FCP_TMF_CMPL) { | |
1716 | resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; | |
1717 | resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; | |
1718 | resp->payload.ba_acct.low_seq_cnt = 0x0000; | |
1719 | resp->payload.ba_acct.high_seq_cnt = 0xFFFF; | |
1720 | resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; | |
1721 | resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; | |
1722 | } else { | |
1723 | resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; | |
1724 | resp->payload.ba_rjt.reason_code = | |
1725 | BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; | |
1726 | /* Other bytes are zero */ | |
1727 | } | |
1728 | ||
1729 | vha->vha_tgt.qla_tgt->abts_resp_expected++; | |
1730 | ||
1731 | /* Memory Barrier */ | |
1732 | wmb(); | |
1733 | if (qpair->reqq_start_iocbs) | |
1734 | qpair->reqq_start_iocbs(qpair); | |
1735 | else | |
1736 | qla2x00_start_iocbs(vha, qpair->req); | |
1737 | } | |
1738 | ||
1739 | /* | |
1740 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire | |
1741 | */ | |
1742 | static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, | |
1743 | struct abts_resp_from_24xx_fw *entry) | |
1744 | { | |
1745 | struct ctio7_to_24xx *ctio; | |
1746 | ||
1747 | ql_dbg(ql_dbg_tgt, vha, 0xe007, | |
1748 | "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw); | |
1749 | ||
1750 | ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready( | |
1751 | vha->hw->base_qpair, NULL); | |
1752 | if (ctio == NULL) { | |
1753 | ql_dbg(ql_dbg_tgt, vha, 0xe04b, | |
1754 | "qla_target(%d): %s failed: unable to allocate " | |
1755 | "request packet\n", vha->vp_idx, __func__); | |
1756 | return; | |
1757 | } | |
1758 | ||
1759 | /* | |
1760 | * We've got on entrance firmware's response on by us generated | |
1761 | * ABTS response. So, in it ID fields are reversed. | |
1762 | */ | |
1763 | ||
1764 | ctio->entry_type = CTIO_TYPE7; | |
1765 | ctio->entry_count = 1; | |
1766 | ctio->nport_handle = entry->nport_handle; | |
1767 | ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; | |
1768 | ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); | |
1769 | ctio->vp_index = vha->vp_idx; | |
1770 | ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0]; | |
1771 | ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1]; | |
1772 | ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2]; | |
1773 | ctio->exchange_addr = entry->exchange_addr_to_abort; | |
1774 | ctio->u.status1.flags = cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | | |
1775 | CTIO7_FLAGS_TERMINATE); | |
1776 | ctio->u.status1.ox_id = cpu_to_le16(entry->fcp_hdr_le.ox_id); | |
1777 | ||
1778 | /* Memory Barrier */ | |
1779 | wmb(); | |
1780 | qla2x00_start_iocbs(vha, vha->req); | |
1781 | ||
1782 | qlt_24xx_send_abts_resp(vha->hw->base_qpair, | |
1783 | (struct abts_recv_from_24xx *)entry, | |
1784 | FCP_TMF_CMPL, true); | |
1785 | } | |
1786 | ||
1787 | static int abort_cmd_for_tag(struct scsi_qla_host *vha, uint32_t tag) | |
1788 | { | |
1789 | struct qla_tgt_sess_op *op; | |
1790 | struct qla_tgt_cmd *cmd; | |
1791 | unsigned long flags; | |
1792 | ||
1793 | spin_lock_irqsave(&vha->cmd_list_lock, flags); | |
1794 | list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { | |
1795 | if (tag == op->atio.u.isp24.exchange_addr) { | |
1796 | op->aborted = true; | |
1797 | spin_unlock_irqrestore(&vha->cmd_list_lock, flags); | |
1798 | return 1; | |
1799 | } | |
1800 | } | |
1801 | ||
1802 | list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { | |
1803 | if (tag == op->atio.u.isp24.exchange_addr) { | |
1804 | op->aborted = true; | |
1805 | spin_unlock_irqrestore(&vha->cmd_list_lock, flags); | |
1806 | return 1; | |
1807 | } | |
1808 | } | |
1809 | ||
1810 | list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { | |
1811 | if (tag == cmd->atio.u.isp24.exchange_addr) { | |
1812 | cmd->aborted = 1; | |
1813 | spin_unlock_irqrestore(&vha->cmd_list_lock, flags); | |
1814 | return 1; | |
1815 | } | |
1816 | } | |
1817 | spin_unlock_irqrestore(&vha->cmd_list_lock, flags); | |
1818 | ||
1819 | return 0; | |
1820 | } | |
1821 | ||
1822 | /* drop cmds for the given lun | |
1823 | * XXX only looks for cmds on the port through which lun reset was recieved | |
1824 | * XXX does not go through the list of other port (which may have cmds | |
1825 | * for the same lun) | |
1826 | */ | |
1827 | static void abort_cmds_for_lun(struct scsi_qla_host *vha, | |
1828 | u64 lun, uint8_t *s_id) | |
1829 | { | |
1830 | struct qla_tgt_sess_op *op; | |
1831 | struct qla_tgt_cmd *cmd; | |
1832 | uint32_t key; | |
1833 | unsigned long flags; | |
1834 | ||
1835 | key = sid_to_key(s_id); | |
1836 | spin_lock_irqsave(&vha->cmd_list_lock, flags); | |
1837 | list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { | |
1838 | uint32_t op_key; | |
1839 | u64 op_lun; | |
1840 | ||
1841 | op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); | |
1842 | op_lun = scsilun_to_int( | |
1843 | (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); | |
1844 | if (op_key == key && op_lun == lun) | |
1845 | op->aborted = true; | |
1846 | } | |
1847 | ||
1848 | list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { | |
1849 | uint32_t op_key; | |
1850 | u64 op_lun; | |
1851 | ||
1852 | op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); | |
1853 | op_lun = scsilun_to_int( | |
1854 | (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); | |
1855 | if (op_key == key && op_lun == lun) | |
1856 | op->aborted = true; | |
1857 | } | |
1858 | ||
1859 | list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { | |
1860 | uint32_t cmd_key; | |
1861 | u64 cmd_lun; | |
1862 | ||
1863 | cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); | |
1864 | cmd_lun = scsilun_to_int( | |
1865 | (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun); | |
1866 | if (cmd_key == key && cmd_lun == lun) | |
1867 | cmd->aborted = 1; | |
1868 | } | |
1869 | spin_unlock_irqrestore(&vha->cmd_list_lock, flags); | |
1870 | } | |
1871 | ||
1872 | /* ha->hardware_lock supposed to be held on entry */ | |
1873 | static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha, | |
1874 | struct abts_recv_from_24xx *abts, struct fc_port *sess) | |
1875 | { | |
1876 | struct qla_hw_data *ha = vha->hw; | |
1877 | struct qla_tgt_mgmt_cmd *mcmd; | |
1878 | int rc; | |
1879 | ||
1880 | if (abort_cmd_for_tag(vha, abts->exchange_addr_to_abort)) { | |
1881 | /* send TASK_ABORT response immediately */ | |
1882 | qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_CMPL, false); | |
1883 | return 0; | |
1884 | } | |
1885 | ||
1886 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f, | |
1887 | "qla_target(%d): task abort (tag=%d)\n", | |
1888 | vha->vp_idx, abts->exchange_addr_to_abort); | |
1889 | ||
1890 | mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); | |
1891 | if (mcmd == NULL) { | |
1892 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051, | |
1893 | "qla_target(%d): %s: Allocation of ABORT cmd failed", | |
1894 | vha->vp_idx, __func__); | |
1895 | return -ENOMEM; | |
1896 | } | |
1897 | memset(mcmd, 0, sizeof(*mcmd)); | |
1898 | ||
1899 | mcmd->sess = sess; | |
1900 | memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts)); | |
1901 | mcmd->reset_count = ha->base_qpair->chip_reset; | |
1902 | mcmd->tmr_func = QLA_TGT_ABTS; | |
1903 | mcmd->qpair = ha->base_qpair; | |
1904 | ||
1905 | /* | |
1906 | * LUN is looked up by target-core internally based on the passed | |
1907 | * abts->exchange_addr_to_abort tag. | |
1908 | */ | |
1909 | rc = ha->tgt.tgt_ops->handle_tmr(mcmd, 0, mcmd->tmr_func, | |
1910 | abts->exchange_addr_to_abort); | |
1911 | if (rc != 0) { | |
1912 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052, | |
1913 | "qla_target(%d): tgt_ops->handle_tmr()" | |
1914 | " failed: %d", vha->vp_idx, rc); | |
1915 | mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); | |
1916 | return -EFAULT; | |
1917 | } | |
1918 | ||
1919 | return 0; | |
1920 | } | |
1921 | ||
1922 | /* | |
1923 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire | |
1924 | */ | |
1925 | static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, | |
1926 | struct abts_recv_from_24xx *abts) | |
1927 | { | |
1928 | struct qla_hw_data *ha = vha->hw; | |
1929 | struct fc_port *sess; | |
1930 | uint32_t tag = abts->exchange_addr_to_abort; | |
1931 | uint8_t s_id[3]; | |
1932 | int rc; | |
1933 | unsigned long flags; | |
1934 | ||
1935 | if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { | |
1936 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, | |
1937 | "qla_target(%d): ABTS: Abort Sequence not " | |
1938 | "supported\n", vha->vp_idx); | |
1939 | qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, | |
1940 | false); | |
1941 | return; | |
1942 | } | |
1943 | ||
1944 | if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { | |
1945 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, | |
1946 | "qla_target(%d): ABTS: Unknown Exchange " | |
1947 | "Address received\n", vha->vp_idx); | |
1948 | qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, | |
1949 | false); | |
1950 | return; | |
1951 | } | |
1952 | ||
1953 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, | |
1954 | "qla_target(%d): task abort (s_id=%x:%x:%x, " | |
1955 | "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2], | |
1956 | abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag, | |
1957 | le32_to_cpu(abts->fcp_hdr_le.parameter)); | |
1958 | ||
1959 | s_id[0] = abts->fcp_hdr_le.s_id[2]; | |
1960 | s_id[1] = abts->fcp_hdr_le.s_id[1]; | |
1961 | s_id[2] = abts->fcp_hdr_le.s_id[0]; | |
1962 | ||
1963 | spin_lock_irqsave(&ha->tgt.sess_lock, flags); | |
1964 | sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); | |
1965 | if (!sess) { | |
1966 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, | |
1967 | "qla_target(%d): task abort for non-existant session\n", | |
1968 | vha->vp_idx); | |
1969 | rc = qlt_sched_sess_work(vha->vha_tgt.qla_tgt, | |
1970 | QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts)); | |
1971 | ||
1972 | spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); | |
1973 | ||
1974 | if (rc != 0) { | |
1975 | qlt_24xx_send_abts_resp(ha->base_qpair, abts, | |
1976 | FCP_TMF_REJECTED, false); | |
1977 | } | |
1978 | return; | |
1979 | } | |
1980 | spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); | |
1981 | ||
1982 | ||
1983 | if (sess->deleted) { | |
1984 | qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, | |
1985 | false); | |
1986 | return; | |
1987 | } | |
1988 | ||
1989 | rc = __qlt_24xx_handle_abts(vha, abts, sess); | |
1990 | if (rc != 0) { | |
1991 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, | |
1992 | "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", | |
1993 | vha->vp_idx, rc); | |
1994 | qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, | |
1995 | false); | |
1996 | return; | |
1997 | } | |
1998 | } | |
1999 | ||
2000 | /* | |
2001 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire | |
2002 | */ | |
2003 | static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair, | |
2004 | struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) | |
2005 | { | |
2006 | struct scsi_qla_host *ha = qpair->vha; | |
2007 | struct atio_from_isp *atio = &mcmd->orig_iocb.atio; | |
2008 | struct ctio7_to_24xx *ctio; | |
2009 | uint16_t temp; | |
2010 | ||
2011 | ql_dbg(ql_dbg_tgt, ha, 0xe008, | |
2012 | "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", | |
2013 | ha, atio, resp_code); | |
2014 | ||
2015 | ||
2016 | ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL); | |
2017 | if (ctio == NULL) { | |
2018 | ql_dbg(ql_dbg_tgt, ha, 0xe04c, | |
2019 | "qla_target(%d): %s failed: unable to allocate " | |
2020 | "request packet\n", ha->vp_idx, __func__); | |
2021 | return; | |
2022 | } | |
2023 | ||
2024 | ctio->entry_type = CTIO_TYPE7; | |
2025 | ctio->entry_count = 1; | |
2026 | ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; | |
2027 | ctio->nport_handle = mcmd->sess->loop_id; | |
2028 | ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); | |
2029 | ctio->vp_index = ha->vp_idx; | |
2030 | ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; | |
2031 | ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; | |
2032 | ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; | |
2033 | ctio->exchange_addr = atio->u.isp24.exchange_addr; | |
2034 | temp = (atio->u.isp24.attr << 9)| | |
2035 | CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; | |
2036 | ctio->u.status1.flags = cpu_to_le16(temp); | |
2037 | temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); | |
2038 | ctio->u.status1.ox_id = cpu_to_le16(temp); | |
2039 | ctio->u.status1.scsi_status = | |
2040 | cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); | |
2041 | ctio->u.status1.response_len = cpu_to_le16(8); | |
2042 | ctio->u.status1.sense_data[0] = resp_code; | |
2043 | ||
2044 | /* Memory Barrier */ | |
2045 | wmb(); | |
2046 | if (qpair->reqq_start_iocbs) | |
2047 | qpair->reqq_start_iocbs(qpair); | |
2048 | else | |
2049 | qla2x00_start_iocbs(ha, qpair->req); | |
2050 | } | |
2051 | ||
2052 | void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) | |
2053 | { | |
2054 | mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); | |
2055 | } | |
2056 | EXPORT_SYMBOL(qlt_free_mcmd); | |
2057 | ||
2058 | /* | |
2059 | * ha->hardware_lock supposed to be held on entry. Might drop it, then | |
2060 | * reacquire | |
2061 | */ | |
2062 | void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, | |
2063 | uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq) | |
2064 | { | |
2065 | struct atio_from_isp *atio = &cmd->atio; | |
2066 | struct ctio7_to_24xx *ctio; | |
2067 | uint16_t temp; | |
2068 | struct scsi_qla_host *vha = cmd->vha; | |
2069 | ||
2070 | ql_dbg(ql_dbg_tgt_dif, vha, 0x3066, | |
2071 | "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, " | |
2072 | "sense_key=%02x, asc=%02x, ascq=%02x", | |
2073 | vha, atio, scsi_status, sense_key, asc, ascq); | |
2074 | ||
2075 | ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL); | |
2076 | if (!ctio) { | |
2077 | ql_dbg(ql_dbg_async, vha, 0x3067, | |
2078 | "qla2x00t(%ld): %s failed: unable to allocate request packet", | |
2079 | vha->host_no, __func__); | |
2080 | goto out; | |
2081 | } | |
2082 | ||
2083 | ctio->entry_type = CTIO_TYPE7; | |
2084 | ctio->entry_count = 1; | |
2085 | ctio->handle = QLA_TGT_SKIP_HANDLE; | |
2086 | ctio->nport_handle = cmd->sess->loop_id; | |
2087 | ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); | |
2088 | ctio->vp_index = vha->vp_idx; | |
2089 | ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; | |
2090 | ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; | |
2091 | ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; | |
2092 | ctio->exchange_addr = atio->u.isp24.exchange_addr; | |
2093 | temp = (atio->u.isp24.attr << 9) | | |
2094 | CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; | |
2095 | ctio->u.status1.flags = cpu_to_le16(temp); | |
2096 | temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); | |
2097 | ctio->u.status1.ox_id = cpu_to_le16(temp); | |
2098 | ctio->u.status1.scsi_status = | |
2099 | cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status); | |
2100 | ctio->u.status1.response_len = cpu_to_le16(18); | |
2101 | ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); | |
2102 | ||
2103 | if (ctio->u.status1.residual != 0) | |
2104 | ctio->u.status1.scsi_status |= | |
2105 | cpu_to_le16(SS_RESIDUAL_UNDER); | |
2106 | ||
2107 | /* Response code and sense key */ | |
2108 | put_unaligned_le32(((0x70 << 24) | (sense_key << 8)), | |
2109 | (&ctio->u.status1.sense_data)[0]); | |
2110 | /* Additional sense length */ | |
2111 | put_unaligned_le32(0x0a, (&ctio->u.status1.sense_data)[1]); | |
2112 | /* ASC and ASCQ */ | |
2113 | put_unaligned_le32(((asc << 24) | (ascq << 16)), | |
2114 | (&ctio->u.status1.sense_data)[3]); | |
2115 | ||
2116 | /* Memory Barrier */ | |
2117 | wmb(); | |
2118 | ||
2119 | if (qpair->reqq_start_iocbs) | |
2120 | qpair->reqq_start_iocbs(qpair); | |
2121 | else | |
2122 | qla2x00_start_iocbs(vha, qpair->req); | |
2123 | ||
2124 | out: | |
2125 | return; | |
2126 | } | |
2127 | ||
2128 | /* callback from target fabric module code */ | |
2129 | void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) | |
2130 | { | |
2131 | struct scsi_qla_host *vha = mcmd->sess->vha; | |
2132 | struct qla_hw_data *ha = vha->hw; | |
2133 | unsigned long flags; | |
2134 | struct qla_qpair *qpair = mcmd->qpair; | |
2135 | ||
2136 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, | |
2137 | "TM response mcmd (%p) status %#x state %#x", | |
2138 | mcmd, mcmd->fc_tm_rsp, mcmd->flags); | |
2139 | ||
2140 | spin_lock_irqsave(qpair->qp_lock_ptr, flags); | |
2141 | ||
2142 | if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) { | |
2143 | /* | |
2144 | * Either the port is not online or this request was from | |
2145 | * previous life, just abort the processing. | |
2146 | */ | |
2147 | ql_dbg(ql_dbg_async, vha, 0xe100, | |
2148 | "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n", | |
2149 | vha->flags.online, qla2x00_reset_active(vha), | |
2150 | mcmd->reset_count, qpair->chip_reset); | |
2151 | ha->tgt.tgt_ops->free_mcmd(mcmd); | |
2152 | spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); | |
2153 | return; | |
2154 | } | |
2155 | ||
2156 | if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) { | |
2157 | if (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode == | |
2158 | ELS_LOGO || | |
2159 | mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode == | |
2160 | ELS_PRLO || | |
2161 | mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode == | |
2162 | ELS_TPRLO) { | |
2163 | ql_dbg(ql_dbg_disc, vha, 0x2106, | |
2164 | "TM response logo %phC status %#x state %#x", | |
2165 | mcmd->sess->port_name, mcmd->fc_tm_rsp, | |
2166 | mcmd->flags); | |
2167 | qlt_schedule_sess_for_deletion_lock(mcmd->sess); | |
2168 | } else { | |
2169 | qlt_send_notify_ack(vha->hw->base_qpair, | |
2170 | &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); | |
2171 | } | |
2172 | } else { | |
2173 | if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) | |
2174 | qlt_24xx_send_abts_resp(qpair, &mcmd->orig_iocb.abts, | |
2175 | mcmd->fc_tm_rsp, false); | |
2176 | else | |
2177 | qlt_24xx_send_task_mgmt_ctio(qpair, mcmd, | |
2178 | mcmd->fc_tm_rsp); | |
2179 | } | |
2180 | /* | |
2181 | * Make the callback for ->free_mcmd() to queue_work() and invoke | |
2182 | * target_put_sess_cmd() to drop cmd_kref to 1. The final | |
2183 | * target_put_sess_cmd() call will be made from TFO->check_stop_free() | |
2184 | * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd | |
2185 | * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> | |
2186 | * qlt_xmit_tm_rsp() returns here.. | |
2187 | */ | |
2188 | ha->tgt.tgt_ops->free_mcmd(mcmd); | |
2189 | spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); | |
2190 | } | |
2191 | EXPORT_SYMBOL(qlt_xmit_tm_rsp); | |
2192 | ||
2193 | /* No locks */ | |
2194 | static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) | |
2195 | { | |
2196 | struct qla_tgt_cmd *cmd = prm->cmd; | |
2197 | ||
2198 | BUG_ON(cmd->sg_cnt == 0); | |
2199 | ||
2200 | prm->sg = (struct scatterlist *)cmd->sg; | |
2201 | prm->seg_cnt = pci_map_sg(cmd->qpair->pdev, cmd->sg, | |
2202 | cmd->sg_cnt, cmd->dma_data_direction); | |
2203 | if (unlikely(prm->seg_cnt == 0)) | |
2204 | goto out_err; | |
2205 | ||
2206 | prm->cmd->sg_mapped = 1; | |
2207 | ||
2208 | if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) { | |
2209 | /* | |
2210 | * If greater than four sg entries then we need to allocate | |
2211 | * the continuation entries | |
2212 | */ | |
2213 | if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX) | |
2214 | prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - | |
2215 | QLA_TGT_DATASEGS_PER_CMD_24XX, | |
2216 | QLA_TGT_DATASEGS_PER_CONT_24XX); | |
2217 | } else { | |
2218 | /* DIF */ | |
2219 | if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || | |
2220 | (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { | |
2221 | prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz); | |
2222 | prm->tot_dsds = prm->seg_cnt; | |
2223 | } else | |
2224 | prm->tot_dsds = prm->seg_cnt; | |
2225 | ||
2226 | if (cmd->prot_sg_cnt) { | |
2227 | prm->prot_sg = cmd->prot_sg; | |
2228 | prm->prot_seg_cnt = pci_map_sg(cmd->qpair->pdev, | |
2229 | cmd->prot_sg, cmd->prot_sg_cnt, | |
2230 | cmd->dma_data_direction); | |
2231 | if (unlikely(prm->prot_seg_cnt == 0)) | |
2232 | goto out_err; | |
2233 | ||
2234 | if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || | |
2235 | (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { | |
2236 | /* Dif Bundling not support here */ | |
2237 | prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen, | |
2238 | cmd->blk_sz); | |
2239 | prm->tot_dsds += prm->prot_seg_cnt; | |
2240 | } else | |
2241 | prm->tot_dsds += prm->prot_seg_cnt; | |
2242 | } | |
2243 | } | |
2244 | ||
2245 | return 0; | |
2246 | ||
2247 | out_err: | |
2248 | ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d, | |
2249 | "qla_target(%d): PCI mapping failed: sg_cnt=%d", | |
2250 | 0, prm->cmd->sg_cnt); | |
2251 | return -1; | |
2252 | } | |
2253 | ||
2254 | static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) | |
2255 | { | |
2256 | struct qla_hw_data *ha; | |
2257 | struct qla_qpair *qpair; | |
2258 | if (!cmd->sg_mapped) | |
2259 | return; | |
2260 | ||
2261 | qpair = cmd->qpair; | |
2262 | ||
2263 | pci_unmap_sg(qpair->pdev, cmd->sg, cmd->sg_cnt, | |
2264 | cmd->dma_data_direction); | |
2265 | cmd->sg_mapped = 0; | |
2266 | ||
2267 | if (cmd->prot_sg_cnt) | |
2268 | pci_unmap_sg(qpair->pdev, cmd->prot_sg, cmd->prot_sg_cnt, | |
2269 | cmd->dma_data_direction); | |
2270 | ||
2271 | if (!cmd->ctx) | |
2272 | return; | |
2273 | ha = vha->hw; | |
2274 | if (cmd->ctx_dsd_alloced) | |
2275 | qla2x00_clean_dsd_pool(ha, cmd->ctx); | |
2276 | ||
2277 | dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma); | |
2278 | } | |
2279 | ||
2280 | static int qlt_check_reserve_free_req(struct qla_qpair *qpair, | |
2281 | uint32_t req_cnt) | |
2282 | { | |
2283 | uint32_t cnt; | |
2284 | struct req_que *req = qpair->req; | |
2285 | ||
2286 | if (req->cnt < (req_cnt + 2)) { | |
2287 | cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr : | |
2288 | RD_REG_DWORD_RELAXED(req->req_q_out)); | |
2289 | ||
2290 | if (req->ring_index < cnt) | |
2291 | req->cnt = cnt - req->ring_index; | |
2292 | else | |
2293 | req->cnt = req->length - (req->ring_index - cnt); | |
2294 | ||
2295 | if (unlikely(req->cnt < (req_cnt + 2))) | |
2296 | return -EAGAIN; | |
2297 | } | |
2298 | ||
2299 | req->cnt -= req_cnt; | |
2300 | ||
2301 | return 0; | |
2302 | } | |
2303 | ||
2304 | /* | |
2305 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire | |
2306 | */ | |
2307 | static inline void *qlt_get_req_pkt(struct req_que *req) | |
2308 | { | |
2309 | /* Adjust ring index. */ | |
2310 | req->ring_index++; | |
2311 | if (req->ring_index == req->length) { | |
2312 | req->ring_index = 0; | |
2313 | req->ring_ptr = req->ring; | |
2314 | } else { | |
2315 | req->ring_ptr++; | |
2316 | } | |
2317 | return (cont_entry_t *)req->ring_ptr; | |
2318 | } | |
2319 | ||
2320 | /* ha->hardware_lock supposed to be held on entry */ | |
2321 | static inline uint32_t qlt_make_handle(struct qla_qpair *qpair) | |
2322 | { | |
2323 | uint32_t h; | |
2324 | int index; | |
2325 | uint8_t found = 0; | |
2326 | struct req_que *req = qpair->req; | |
2327 | ||
2328 | h = req->current_outstanding_cmd; | |
2329 | ||
2330 | for (index = 1; index < req->num_outstanding_cmds; index++) { | |
2331 | h++; | |
2332 | if (h == req->num_outstanding_cmds) | |
2333 | h = 1; | |
2334 | ||
2335 | if (h == QLA_TGT_SKIP_HANDLE) | |
2336 | continue; | |
2337 | ||
2338 | if (!req->outstanding_cmds[h]) { | |
2339 | found = 1; | |
2340 | break; | |
2341 | } | |
2342 | } | |
2343 | ||
2344 | if (found) { | |
2345 | req->current_outstanding_cmd = h; | |
2346 | } else { | |
2347 | ql_dbg(ql_dbg_io, qpair->vha, 0x305b, | |
2348 | "qla_target(%d): Ran out of empty cmd slots\n", | |
2349 | qpair->vha->vp_idx); | |
2350 | h = QLA_TGT_NULL_HANDLE; | |
2351 | } | |
2352 | ||
2353 | return h; | |
2354 | } | |
2355 | ||
2356 | /* ha->hardware_lock supposed to be held on entry */ | |
2357 | static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair, | |
2358 | struct qla_tgt_prm *prm) | |
2359 | { | |
2360 | uint32_t h; | |
2361 | struct ctio7_to_24xx *pkt; | |
2362 | struct atio_from_isp *atio = &prm->cmd->atio; | |
2363 | uint16_t temp; | |
2364 | ||
2365 | pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr; | |
2366 | prm->pkt = pkt; | |
2367 | memset(pkt, 0, sizeof(*pkt)); | |
2368 | ||
2369 | pkt->entry_type = CTIO_TYPE7; | |
2370 | pkt->entry_count = (uint8_t)prm->req_cnt; | |
2371 | pkt->vp_index = prm->cmd->vp_idx; | |
2372 | ||
2373 | h = qlt_make_handle(qpair); | |
2374 | if (unlikely(h == QLA_TGT_NULL_HANDLE)) { | |
2375 | /* | |
2376 | * CTIO type 7 from the firmware doesn't provide a way to | |
2377 | * know the initiator's LOOP ID, hence we can't find | |
2378 | * the session and, so, the command. | |
2379 | */ | |
2380 | return -EAGAIN; | |
2381 | } else | |
2382 | qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; | |
2383 | ||
2384 | pkt->handle = MAKE_HANDLE(qpair->req->id, h); | |
2385 | pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; | |
2386 | pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); | |
2387 | pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); | |
2388 | pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; | |
2389 | pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; | |
2390 | pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; | |
2391 | pkt->exchange_addr = atio->u.isp24.exchange_addr; | |
2392 | temp = atio->u.isp24.attr << 9; | |
2393 | pkt->u.status0.flags |= cpu_to_le16(temp); | |
2394 | temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); | |
2395 | pkt->u.status0.ox_id = cpu_to_le16(temp); | |
2396 | pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); | |
2397 | ||
2398 | return 0; | |
2399 | } | |
2400 | ||
2401 | /* | |
2402 | * ha->hardware_lock supposed to be held on entry. We have already made sure | |
2403 | * that there is sufficient amount of request entries to not drop it. | |
2404 | */ | |
2405 | static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm) | |
2406 | { | |
2407 | int cnt; | |
2408 | uint32_t *dword_ptr; | |
2409 | ||
2410 | /* Build continuation packets */ | |
2411 | while (prm->seg_cnt > 0) { | |
2412 | cont_a64_entry_t *cont_pkt64 = | |
2413 | (cont_a64_entry_t *)qlt_get_req_pkt( | |
2414 | prm->cmd->qpair->req); | |
2415 | ||
2416 | /* | |
2417 | * Make sure that from cont_pkt64 none of | |
2418 | * 64-bit specific fields used for 32-bit | |
2419 | * addressing. Cast to (cont_entry_t *) for | |
2420 | * that. | |
2421 | */ | |
2422 | ||
2423 | memset(cont_pkt64, 0, sizeof(*cont_pkt64)); | |
2424 | ||
2425 | cont_pkt64->entry_count = 1; | |
2426 | cont_pkt64->sys_define = 0; | |
2427 | ||
2428 | cont_pkt64->entry_type = CONTINUE_A64_TYPE; | |
2429 | dword_ptr = (uint32_t *)&cont_pkt64->dseg_0_address; | |
2430 | ||
2431 | /* Load continuation entry data segments */ | |
2432 | for (cnt = 0; | |
2433 | cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt; | |
2434 | cnt++, prm->seg_cnt--) { | |
2435 | *dword_ptr++ = | |
2436 | cpu_to_le32(pci_dma_lo32 | |
2437 | (sg_dma_address(prm->sg))); | |
2438 | *dword_ptr++ = cpu_to_le32(pci_dma_hi32 | |
2439 | (sg_dma_address(prm->sg))); | |
2440 | *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg)); | |
2441 | ||
2442 | prm->sg = sg_next(prm->sg); | |
2443 | } | |
2444 | } | |
2445 | } | |
2446 | ||
2447 | /* | |
2448 | * ha->hardware_lock supposed to be held on entry. We have already made sure | |
2449 | * that there is sufficient amount of request entries to not drop it. | |
2450 | */ | |
2451 | static void qlt_load_data_segments(struct qla_tgt_prm *prm) | |
2452 | { | |
2453 | int cnt; | |
2454 | uint32_t *dword_ptr; | |
2455 | struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; | |
2456 | ||
2457 | pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); | |
2458 | ||
2459 | /* Setup packet address segment pointer */ | |
2460 | dword_ptr = pkt24->u.status0.dseg_0_address; | |
2461 | ||
2462 | /* Set total data segment count */ | |
2463 | if (prm->seg_cnt) | |
2464 | pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); | |
2465 | ||
2466 | if (prm->seg_cnt == 0) { | |
2467 | /* No data transfer */ | |
2468 | *dword_ptr++ = 0; | |
2469 | *dword_ptr = 0; | |
2470 | return; | |
2471 | } | |
2472 | ||
2473 | /* If scatter gather */ | |
2474 | ||
2475 | /* Load command entry data segments */ | |
2476 | for (cnt = 0; | |
2477 | (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt; | |
2478 | cnt++, prm->seg_cnt--) { | |
2479 | *dword_ptr++ = | |
2480 | cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg))); | |
2481 | ||
2482 | *dword_ptr++ = cpu_to_le32(pci_dma_hi32( | |
2483 | sg_dma_address(prm->sg))); | |
2484 | ||
2485 | *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg)); | |
2486 | ||
2487 | prm->sg = sg_next(prm->sg); | |
2488 | } | |
2489 | ||
2490 | qlt_load_cont_data_segments(prm); | |
2491 | } | |
2492 | ||
2493 | static inline int qlt_has_data(struct qla_tgt_cmd *cmd) | |
2494 | { | |
2495 | return cmd->bufflen > 0; | |
2496 | } | |
2497 | ||
2498 | static void qlt_print_dif_err(struct qla_tgt_prm *prm) | |
2499 | { | |
2500 | struct qla_tgt_cmd *cmd; | |
2501 | struct scsi_qla_host *vha; | |
2502 | ||
2503 | /* asc 0x10=dif error */ | |
2504 | if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) { | |
2505 | cmd = prm->cmd; | |
2506 | vha = cmd->vha; | |
2507 | /* ASCQ */ | |
2508 | switch (prm->sense_buffer[13]) { | |
2509 | case 1: | |
2510 | ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b, | |
2511 | "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] " | |
2512 | "se_cmd=%p tag[%x]", | |
2513 | cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, | |
2514 | cmd->atio.u.isp24.exchange_addr); | |
2515 | break; | |
2516 | case 2: | |
2517 | ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c, | |
2518 | "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] " | |
2519 | "se_cmd=%p tag[%x]", | |
2520 | cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, | |
2521 | cmd->atio.u.isp24.exchange_addr); | |
2522 | break; | |
2523 | case 3: | |
2524 | ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f, | |
2525 | "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] " | |
2526 | "se_cmd=%p tag[%x]", | |
2527 | cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, | |
2528 | cmd->atio.u.isp24.exchange_addr); | |
2529 | break; | |
2530 | default: | |
2531 | ql_dbg(ql_dbg_tgt_dif, vha, 0xe010, | |
2532 | "BE detected Dif ERR: lba[%llx|%lld] len[%x] " | |
2533 | "se_cmd=%p tag[%x]", | |
2534 | cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, | |
2535 | cmd->atio.u.isp24.exchange_addr); | |
2536 | break; | |
2537 | } | |
2538 | ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16); | |
2539 | } | |
2540 | } | |
2541 | ||
2542 | /* | |
2543 | * Called without ha->hardware_lock held | |
2544 | */ | |
2545 | static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, | |
2546 | struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, | |
2547 | uint32_t *full_req_cnt) | |
2548 | { | |
2549 | struct se_cmd *se_cmd = &cmd->se_cmd; | |
2550 | struct qla_qpair *qpair = cmd->qpair; | |
2551 | ||
2552 | prm->cmd = cmd; | |
2553 | prm->tgt = cmd->tgt; | |
2554 | prm->pkt = NULL; | |
2555 | prm->rq_result = scsi_status; | |
2556 | prm->sense_buffer = &cmd->sense_buffer[0]; | |
2557 | prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; | |
2558 | prm->sg = NULL; | |
2559 | prm->seg_cnt = -1; | |
2560 | prm->req_cnt = 1; | |
2561 | prm->residual = 0; | |
2562 | prm->add_status_pkt = 0; | |
2563 | prm->prot_sg = NULL; | |
2564 | prm->prot_seg_cnt = 0; | |
2565 | prm->tot_dsds = 0; | |
2566 | ||
2567 | if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { | |
2568 | if (qlt_pci_map_calc_cnt(prm) != 0) | |
2569 | return -EAGAIN; | |
2570 | } | |
2571 | ||
2572 | *full_req_cnt = prm->req_cnt; | |
2573 | ||
2574 | if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { | |
2575 | prm->residual = se_cmd->residual_count; | |
2576 | ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c, | |
2577 | "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", | |
2578 | prm->residual, se_cmd->tag, | |
2579 | se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, | |
2580 | cmd->bufflen, prm->rq_result); | |
2581 | prm->rq_result |= SS_RESIDUAL_UNDER; | |
2582 | } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { | |
2583 | prm->residual = se_cmd->residual_count; | |
2584 | ql_dbg_qp(ql_dbg_io, qpair, 0x305d, | |
2585 | "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", | |
2586 | prm->residual, se_cmd->tag, se_cmd->t_task_cdb ? | |
2587 | se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result); | |
2588 | prm->rq_result |= SS_RESIDUAL_OVER; | |
2589 | } | |
2590 | ||
2591 | if (xmit_type & QLA_TGT_XMIT_STATUS) { | |
2592 | /* | |
2593 | * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be | |
2594 | * ignored in *xmit_response() below | |
2595 | */ | |
2596 | if (qlt_has_data(cmd)) { | |
2597 | if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || | |
2598 | (IS_FWI2_CAPABLE(cmd->vha->hw) && | |
2599 | (prm->rq_result != 0))) { | |
2600 | prm->add_status_pkt = 1; | |
2601 | (*full_req_cnt)++; | |
2602 | } | |
2603 | } | |
2604 | } | |
2605 | ||
2606 | return 0; | |
2607 | } | |
2608 | ||
2609 | static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd, | |
2610 | int sending_sense) | |
2611 | { | |
2612 | if (cmd->qpair->enable_class_2) | |
2613 | return 0; | |
2614 | ||
2615 | if (sending_sense) | |
2616 | return cmd->conf_compl_supported; | |
2617 | else | |
2618 | return cmd->qpair->enable_explicit_conf && | |
2619 | cmd->conf_compl_supported; | |
2620 | } | |
2621 | ||
2622 | static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, | |
2623 | struct qla_tgt_prm *prm) | |
2624 | { | |
2625 | prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, | |
2626 | (uint32_t)sizeof(ctio->u.status1.sense_data)); | |
2627 | ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); | |
2628 | if (qlt_need_explicit_conf(prm->cmd, 0)) { | |
2629 | ctio->u.status0.flags |= cpu_to_le16( | |
2630 | CTIO7_FLAGS_EXPLICIT_CONFORM | | |
2631 | CTIO7_FLAGS_CONFORM_REQ); | |
2632 | } | |
2633 | ctio->u.status0.residual = cpu_to_le32(prm->residual); | |
2634 | ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); | |
2635 | if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { | |
2636 | int i; | |
2637 | ||
2638 | if (qlt_need_explicit_conf(prm->cmd, 1)) { | |
2639 | if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) { | |
2640 | ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017, | |
2641 | "Skipping EXPLICIT_CONFORM and " | |
2642 | "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " | |
2643 | "non GOOD status\n"); | |
2644 | goto skip_explict_conf; | |
2645 | } | |
2646 | ctio->u.status1.flags |= cpu_to_le16( | |
2647 | CTIO7_FLAGS_EXPLICIT_CONFORM | | |
2648 | CTIO7_FLAGS_CONFORM_REQ); | |
2649 | } | |
2650 | skip_explict_conf: | |
2651 | ctio->u.status1.flags &= | |
2652 | ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); | |
2653 | ctio->u.status1.flags |= | |
2654 | cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); | |
2655 | ctio->u.status1.scsi_status |= | |
2656 | cpu_to_le16(SS_SENSE_LEN_VALID); | |
2657 | ctio->u.status1.sense_length = | |
2658 | cpu_to_le16(prm->sense_buffer_len); | |
2659 | for (i = 0; i < prm->sense_buffer_len/4; i++) | |
2660 | ((uint32_t *)ctio->u.status1.sense_data)[i] = | |
2661 | cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]); | |
2662 | ||
2663 | qlt_print_dif_err(prm); | |
2664 | ||
2665 | } else { | |
2666 | ctio->u.status1.flags &= | |
2667 | ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); | |
2668 | ctio->u.status1.flags |= | |
2669 | cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); | |
2670 | ctio->u.status1.sense_length = 0; | |
2671 | memset(ctio->u.status1.sense_data, 0, | |
2672 | sizeof(ctio->u.status1.sense_data)); | |
2673 | } | |
2674 | ||
2675 | /* Sense with len > 24, is it possible ??? */ | |
2676 | } | |
2677 | ||
2678 | static inline int | |
2679 | qlt_hba_err_chk_enabled(struct se_cmd *se_cmd) | |
2680 | { | |
2681 | switch (se_cmd->prot_op) { | |
2682 | case TARGET_PROT_DOUT_INSERT: | |
2683 | case TARGET_PROT_DIN_STRIP: | |
2684 | if (ql2xenablehba_err_chk >= 1) | |
2685 | return 1; | |
2686 | break; | |
2687 | case TARGET_PROT_DOUT_PASS: | |
2688 | case TARGET_PROT_DIN_PASS: | |
2689 | if (ql2xenablehba_err_chk >= 2) | |
2690 | return 1; | |
2691 | break; | |
2692 | case TARGET_PROT_DIN_INSERT: | |
2693 | case TARGET_PROT_DOUT_STRIP: | |
2694 | return 1; | |
2695 | default: | |
2696 | break; | |
2697 | } | |
2698 | return 0; | |
2699 | } | |
2700 | ||
2701 | static inline int | |
2702 | qla_tgt_ref_mask_check(struct se_cmd *se_cmd) | |
2703 | { | |
2704 | switch (se_cmd->prot_op) { | |
2705 | case TARGET_PROT_DIN_INSERT: | |
2706 | case TARGET_PROT_DOUT_INSERT: | |
2707 | case TARGET_PROT_DIN_STRIP: | |
2708 | case TARGET_PROT_DOUT_STRIP: | |
2709 | case TARGET_PROT_DIN_PASS: | |
2710 | case TARGET_PROT_DOUT_PASS: | |
2711 | return 1; | |
2712 | default: | |
2713 | return 0; | |
2714 | } | |
2715 | return 0; | |
2716 | } | |
2717 | ||
2718 | /* | |
2719 | * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command | |
2720 | */ | |
2721 | static void | |
2722 | qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx, | |
2723 | uint16_t *pfw_prot_opts) | |
2724 | { | |
2725 | struct se_cmd *se_cmd = &cmd->se_cmd; | |
2726 | uint32_t lba = 0xffffffff & se_cmd->t_task_lba; | |
2727 | scsi_qla_host_t *vha = cmd->tgt->vha; | |
2728 | struct qla_hw_data *ha = vha->hw; | |
2729 | uint32_t t32 = 0; | |
2730 | ||
2731 | /* | |
2732 | * wait till Mode Sense/Select cmd, modepage Ah, subpage 2 | |
2733 | * have been immplemented by TCM, before AppTag is avail. | |
2734 | * Look for modesense_handlers[] | |
2735 | */ | |
2736 | ctx->app_tag = 0; | |
2737 | ctx->app_tag_mask[0] = 0x0; | |
2738 | ctx->app_tag_mask[1] = 0x0; | |
2739 | ||
2740 | if (IS_PI_UNINIT_CAPABLE(ha)) { | |
2741 | if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || | |
2742 | (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) | |
2743 | *pfw_prot_opts |= PO_DIS_VALD_APP_ESC; | |
2744 | else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) | |
2745 | *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; | |
2746 | } | |
2747 | ||
2748 | t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts); | |
2749 | ||
2750 | switch (se_cmd->prot_type) { | |
2751 | case TARGET_DIF_TYPE0_PROT: | |
2752 | /* | |
2753 | * No check for ql2xenablehba_err_chk, as it | |
2754 | * would be an I/O error if hba tag generation | |
2755 | * is not done. | |
2756 | */ | |
2757 | ctx->ref_tag = cpu_to_le32(lba); | |
2758 | /* enable ALL bytes of the ref tag */ | |
2759 | ctx->ref_tag_mask[0] = 0xff; | |
2760 | ctx->ref_tag_mask[1] = 0xff; | |
2761 | ctx->ref_tag_mask[2] = 0xff; | |
2762 | ctx->ref_tag_mask[3] = 0xff; | |
2763 | break; | |
2764 | case TARGET_DIF_TYPE1_PROT: | |
2765 | /* | |
2766 | * For TYPE 1 protection: 16 bit GUARD tag, 32 bit | |
2767 | * REF tag, and 16 bit app tag. | |
2768 | */ | |
2769 | ctx->ref_tag = cpu_to_le32(lba); | |
2770 | if (!qla_tgt_ref_mask_check(se_cmd) || | |
2771 | !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { | |
2772 | *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; | |
2773 | break; | |
2774 | } | |
2775 | /* enable ALL bytes of the ref tag */ | |
2776 | ctx->ref_tag_mask[0] = 0xff; | |
2777 | ctx->ref_tag_mask[1] = 0xff; | |
2778 | ctx->ref_tag_mask[2] = 0xff; | |
2779 | ctx->ref_tag_mask[3] = 0xff; | |
2780 | break; | |
2781 | case TARGET_DIF_TYPE2_PROT: | |
2782 | /* | |
2783 | * For TYPE 2 protection: 16 bit GUARD + 32 bit REF | |
2784 | * tag has to match LBA in CDB + N | |
2785 | */ | |
2786 | ctx->ref_tag = cpu_to_le32(lba); | |
2787 | if (!qla_tgt_ref_mask_check(se_cmd) || | |
2788 | !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { | |
2789 | *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; | |
2790 | break; | |
2791 | } | |
2792 | /* enable ALL bytes of the ref tag */ | |
2793 | ctx->ref_tag_mask[0] = 0xff; | |
2794 | ctx->ref_tag_mask[1] = 0xff; | |
2795 | ctx->ref_tag_mask[2] = 0xff; | |
2796 | ctx->ref_tag_mask[3] = 0xff; | |
2797 | break; | |
2798 | case TARGET_DIF_TYPE3_PROT: | |
2799 | /* For TYPE 3 protection: 16 bit GUARD only */ | |
2800 | *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; | |
2801 | ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] = | |
2802 | ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00; | |
2803 | break; | |
2804 | } | |
2805 | } | |
2806 | ||
2807 | static inline int | |
2808 | qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm) | |
2809 | { | |
2810 | uint32_t *cur_dsd; | |
2811 | uint32_t transfer_length = 0; | |
2812 | uint32_t data_bytes; | |
2813 | uint32_t dif_bytes; | |
2814 | uint8_t bundling = 1; | |
2815 | uint8_t *clr_ptr; | |
2816 | struct crc_context *crc_ctx_pkt = NULL; | |
2817 | struct qla_hw_data *ha; | |
2818 | struct ctio_crc2_to_fw *pkt; | |
2819 | dma_addr_t crc_ctx_dma; | |
2820 | uint16_t fw_prot_opts = 0; | |
2821 | struct qla_tgt_cmd *cmd = prm->cmd; | |
2822 | struct se_cmd *se_cmd = &cmd->se_cmd; | |
2823 | uint32_t h; | |
2824 | struct atio_from_isp *atio = &prm->cmd->atio; | |
2825 | struct qla_tc_param tc; | |
2826 | uint16_t t16; | |
2827 | scsi_qla_host_t *vha = cmd->vha; | |
2828 | ||
2829 | ha = vha->hw; | |
2830 | ||
2831 | pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr; | |
2832 | prm->pkt = pkt; | |
2833 | memset(pkt, 0, sizeof(*pkt)); | |
2834 | ||
2835 | ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071, | |
2836 | "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n", | |
2837 | cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op, | |
2838 | prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba); | |
2839 | ||
2840 | if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) || | |
2841 | (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP)) | |
2842 | bundling = 0; | |
2843 | ||
2844 | /* Compute dif len and adjust data len to incude protection */ | |
2845 | data_bytes = cmd->bufflen; | |
2846 | dif_bytes = (data_bytes / cmd->blk_sz) * 8; | |
2847 | ||
2848 | switch (se_cmd->prot_op) { | |
2849 | case TARGET_PROT_DIN_INSERT: | |
2850 | case TARGET_PROT_DOUT_STRIP: | |
2851 | transfer_length = data_bytes; | |
2852 | if (cmd->prot_sg_cnt) | |
2853 | data_bytes += dif_bytes; | |
2854 | break; | |
2855 | case TARGET_PROT_DIN_STRIP: | |
2856 | case TARGET_PROT_DOUT_INSERT: | |
2857 | case TARGET_PROT_DIN_PASS: | |
2858 | case TARGET_PROT_DOUT_PASS: | |
2859 | transfer_length = data_bytes + dif_bytes; | |
2860 | break; | |
2861 | default: | |
2862 | BUG(); | |
2863 | break; | |
2864 | } | |
2865 | ||
2866 | if (!qlt_hba_err_chk_enabled(se_cmd)) | |
2867 | fw_prot_opts |= 0x10; /* Disable Guard tag checking */ | |
2868 | /* HBA error checking enabled */ | |
2869 | else if (IS_PI_UNINIT_CAPABLE(ha)) { | |
2870 | if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || | |
2871 | (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) | |
2872 | fw_prot_opts |= PO_DIS_VALD_APP_ESC; | |
2873 | else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) | |
2874 | fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; | |
2875 | } | |
2876 | ||
2877 | switch (se_cmd->prot_op) { | |
2878 | case TARGET_PROT_DIN_INSERT: | |
2879 | case TARGET_PROT_DOUT_INSERT: | |
2880 | fw_prot_opts |= PO_MODE_DIF_INSERT; | |
2881 | break; | |
2882 | case TARGET_PROT_DIN_STRIP: | |
2883 | case TARGET_PROT_DOUT_STRIP: | |
2884 | fw_prot_opts |= PO_MODE_DIF_REMOVE; | |
2885 | break; | |
2886 | case TARGET_PROT_DIN_PASS: | |
2887 | case TARGET_PROT_DOUT_PASS: | |
2888 | fw_prot_opts |= PO_MODE_DIF_PASS; | |
2889 | /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */ | |
2890 | break; | |
2891 | default:/* Normal Request */ | |
2892 | fw_prot_opts |= PO_MODE_DIF_PASS; | |
2893 | break; | |
2894 | } | |
2895 | ||
2896 | /* ---- PKT ---- */ | |
2897 | /* Update entry type to indicate Command Type CRC_2 IOCB */ | |
2898 | pkt->entry_type = CTIO_CRC2; | |
2899 | pkt->entry_count = 1; | |
2900 | pkt->vp_index = cmd->vp_idx; | |
2901 | ||
2902 | h = qlt_make_handle(qpair); | |
2903 | if (unlikely(h == QLA_TGT_NULL_HANDLE)) { | |
2904 | /* | |
2905 | * CTIO type 7 from the firmware doesn't provide a way to | |
2906 | * know the initiator's LOOP ID, hence we can't find | |
2907 | * the session and, so, the command. | |
2908 | */ | |
2909 | return -EAGAIN; | |
2910 | } else | |
2911 | qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; | |
2912 | ||
2913 | pkt->handle = MAKE_HANDLE(qpair->req->id, h); | |
2914 | pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; | |
2915 | pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); | |
2916 | pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); | |
2917 | pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; | |
2918 | pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; | |
2919 | pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; | |
2920 | pkt->exchange_addr = atio->u.isp24.exchange_addr; | |
2921 | ||
2922 | /* silence compile warning */ | |
2923 | t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); | |
2924 | pkt->ox_id = cpu_to_le16(t16); | |
2925 | ||
2926 | t16 = (atio->u.isp24.attr << 9); | |
2927 | pkt->flags |= cpu_to_le16(t16); | |
2928 | pkt->relative_offset = cpu_to_le32(prm->cmd->offset); | |
2929 | ||
2930 | /* Set transfer direction */ | |
2931 | if (cmd->dma_data_direction == DMA_TO_DEVICE) | |
2932 | pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN); | |
2933 | else if (cmd->dma_data_direction == DMA_FROM_DEVICE) | |
2934 | pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT); | |
2935 | ||
2936 | pkt->dseg_count = prm->tot_dsds; | |
2937 | /* Fibre channel byte count */ | |
2938 | pkt->transfer_length = cpu_to_le32(transfer_length); | |
2939 | ||
2940 | /* ----- CRC context -------- */ | |
2941 | ||
2942 | /* Allocate CRC context from global pool */ | |
2943 | crc_ctx_pkt = cmd->ctx = | |
2944 | dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); | |
2945 | ||
2946 | if (!crc_ctx_pkt) | |
2947 | goto crc_queuing_error; | |
2948 | ||
2949 | /* Zero out CTX area. */ | |
2950 | clr_ptr = (uint8_t *)crc_ctx_pkt; | |
2951 | memset(clr_ptr, 0, sizeof(*crc_ctx_pkt)); | |
2952 | ||
2953 | crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; | |
2954 | INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); | |
2955 | ||
2956 | /* Set handle */ | |
2957 | crc_ctx_pkt->handle = pkt->handle; | |
2958 | ||
2959 | qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts); | |
2960 | ||
2961 | pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma)); | |
2962 | pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma)); | |
2963 | pkt->crc_context_len = CRC_CONTEXT_LEN_FW; | |
2964 | ||
2965 | if (!bundling) { | |
2966 | cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address; | |
2967 | } else { | |
2968 | /* | |
2969 | * Configure Bundling if we need to fetch interlaving | |
2970 | * protection PCI accesses | |
2971 | */ | |
2972 | fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; | |
2973 | crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); | |
2974 | crc_ctx_pkt->u.bundling.dseg_count = | |
2975 | cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt); | |
2976 | cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address; | |
2977 | } | |
2978 | ||
2979 | /* Finish the common fields of CRC pkt */ | |
2980 | crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz); | |
2981 | crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); | |
2982 | crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); | |
2983 | crc_ctx_pkt->guard_seed = cpu_to_le16(0); | |
2984 | ||
2985 | memset((uint8_t *)&tc, 0 , sizeof(tc)); | |
2986 | tc.vha = vha; | |
2987 | tc.blk_sz = cmd->blk_sz; | |
2988 | tc.bufflen = cmd->bufflen; | |
2989 | tc.sg = cmd->sg; | |
2990 | tc.prot_sg = cmd->prot_sg; | |
2991 | tc.ctx = crc_ctx_pkt; | |
2992 | tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced; | |
2993 | ||
2994 | /* Walks data segments */ | |
2995 | pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR); | |
2996 | ||
2997 | if (!bundling && prm->prot_seg_cnt) { | |
2998 | if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd, | |
2999 | prm->tot_dsds, &tc)) | |
3000 | goto crc_queuing_error; | |
3001 | } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd, | |
3002 | (prm->tot_dsds - prm->prot_seg_cnt), &tc)) | |
3003 | goto crc_queuing_error; | |
3004 | ||
3005 | if (bundling && prm->prot_seg_cnt) { | |
3006 | /* Walks dif segments */ | |
3007 | pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA; | |
3008 | ||
3009 | cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address; | |
3010 | if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd, | |
3011 | prm->prot_seg_cnt, &tc)) | |
3012 | goto crc_queuing_error; | |
3013 | } | |
3014 | return QLA_SUCCESS; | |
3015 | ||
3016 | crc_queuing_error: | |
3017 | /* Cleanup will be performed by the caller */ | |
3018 | qpair->req->outstanding_cmds[h] = NULL; | |
3019 | ||
3020 | return QLA_FUNCTION_FAILED; | |
3021 | } | |
3022 | ||
3023 | /* | |
3024 | * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * | |
3025 | * QLA_TGT_XMIT_STATUS for >= 24xx silicon | |
3026 | */ | |
3027 | int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, | |
3028 | uint8_t scsi_status) | |
3029 | { | |
3030 | struct scsi_qla_host *vha = cmd->vha; | |
3031 | struct qla_qpair *qpair = cmd->qpair; | |
3032 | struct ctio7_to_24xx *pkt; | |
3033 | struct qla_tgt_prm prm; | |
3034 | uint32_t full_req_cnt = 0; | |
3035 | unsigned long flags = 0; | |
3036 | int res; | |
3037 | ||
3038 | if (cmd->sess && cmd->sess->deleted) { | |
3039 | cmd->state = QLA_TGT_STATE_PROCESSED; | |
3040 | if (cmd->sess->logout_completed) | |
3041 | /* no need to terminate. FW already freed exchange. */ | |
3042 | qlt_abort_cmd_on_host_reset(cmd->vha, cmd); | |
3043 | else | |
3044 | qlt_send_term_exchange(qpair, cmd, &cmd->atio, 0, 0); | |
3045 | return 0; | |
3046 | } | |
3047 | ||
3048 | ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018, | |
3049 | "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n", | |
3050 | (xmit_type & QLA_TGT_XMIT_STATUS) ? | |
3051 | 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction, | |
3052 | &cmd->se_cmd, qpair->id); | |
3053 | ||
3054 | res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, | |
3055 | &full_req_cnt); | |
3056 | if (unlikely(res != 0)) { | |
3057 | return res; | |
3058 | } | |
3059 | ||
3060 | spin_lock_irqsave(qpair->qp_lock_ptr, flags); | |
3061 | ||
3062 | if (xmit_type == QLA_TGT_XMIT_STATUS) | |
3063 | qpair->tgt_counters.core_qla_snd_status++; | |
3064 | else | |
3065 | qpair->tgt_counters.core_qla_que_buf++; | |
3066 | ||
3067 | if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) { | |
3068 | /* | |
3069 | * Either the port is not online or this request was from | |
3070 | * previous life, just abort the processing. | |
3071 | */ | |
3072 | cmd->state = QLA_TGT_STATE_PROCESSED; | |
3073 | qlt_abort_cmd_on_host_reset(cmd->vha, cmd); | |
3074 | ql_dbg_qp(ql_dbg_async, qpair, 0xe101, | |
3075 | "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n", | |
3076 | vha->flags.online, qla2x00_reset_active(vha), | |
3077 | cmd->reset_count, qpair->chip_reset); | |
3078 | spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); | |
3079 | return 0; | |
3080 | } | |
3081 | ||
3082 | /* Does F/W have an IOCBs for this request */ | |
3083 | res = qlt_check_reserve_free_req(qpair, full_req_cnt); | |
3084 | if (unlikely(res)) | |
3085 | goto out_unmap_unlock; | |
3086 | ||
3087 | if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA)) | |
3088 | res = qlt_build_ctio_crc2_pkt(qpair, &prm); | |
3089 | else | |
3090 | res = qlt_24xx_build_ctio_pkt(qpair, &prm); | |
3091 | if (unlikely(res != 0)) { | |
3092 | qpair->req->cnt += full_req_cnt; | |
3093 | goto out_unmap_unlock; | |
3094 | } | |
3095 | ||
3096 | pkt = (struct ctio7_to_24xx *)prm.pkt; | |
3097 | ||
3098 | if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { | |
3099 | pkt->u.status0.flags |= | |
3100 | cpu_to_le16(CTIO7_FLAGS_DATA_IN | | |
3101 | CTIO7_FLAGS_STATUS_MODE_0); | |
3102 | ||
3103 | if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) | |
3104 | qlt_load_data_segments(&prm); | |
3105 | ||
3106 | if (prm.add_status_pkt == 0) { | |
3107 | if (xmit_type & QLA_TGT_XMIT_STATUS) { | |
3108 | pkt->u.status0.scsi_status = | |
3109 | cpu_to_le16(prm.rq_result); | |
3110 | pkt->u.status0.residual = | |
3111 | cpu_to_le32(prm.residual); | |
3112 | pkt->u.status0.flags |= cpu_to_le16( | |
3113 | CTIO7_FLAGS_SEND_STATUS); | |
3114 | if (qlt_need_explicit_conf(cmd, 0)) { | |
3115 | pkt->u.status0.flags |= | |
3116 | cpu_to_le16( | |
3117 | CTIO7_FLAGS_EXPLICIT_CONFORM | | |
3118 | CTIO7_FLAGS_CONFORM_REQ); | |
3119 | } | |
3120 | } | |
3121 | ||
3122 | } else { | |
3123 | /* | |
3124 | * We have already made sure that there is sufficient | |
3125 | * amount of request entries to not drop HW lock in | |
3126 | * req_pkt(). | |
3127 | */ | |
3128 | struct ctio7_to_24xx *ctio = | |
3129 | (struct ctio7_to_24xx *)qlt_get_req_pkt( | |
3130 | qpair->req); | |
3131 | ||
3132 | ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e, | |
3133 | "Building additional status packet 0x%p.\n", | |
3134 | ctio); | |
3135 | ||
3136 | /* | |
3137 | * T10Dif: ctio_crc2_to_fw overlay ontop of | |
3138 | * ctio7_to_24xx | |
3139 | */ | |
3140 | memcpy(ctio, pkt, sizeof(*ctio)); | |
3141 | /* reset back to CTIO7 */ | |
3142 | ctio->entry_count = 1; | |
3143 | ctio->entry_type = CTIO_TYPE7; | |
3144 | ctio->dseg_count = 0; | |
3145 | ctio->u.status1.flags &= ~cpu_to_le16( | |
3146 | CTIO7_FLAGS_DATA_IN); | |
3147 | ||
3148 | /* Real finish is ctio_m1's finish */ | |
3149 | pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; | |
3150 | pkt->u.status0.flags |= cpu_to_le16( | |
3151 | CTIO7_FLAGS_DONT_RET_CTIO); | |
3152 | ||
3153 | /* qlt_24xx_init_ctio_to_isp will correct | |
3154 | * all neccessary fields that's part of CTIO7. | |
3155 | * There should be no residual of CTIO-CRC2 data. | |
3156 | */ | |
3157 | qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, | |
3158 | &prm); | |
3159 | } | |
3160 | } else | |
3161 | qlt_24xx_init_ctio_to_isp(pkt, &prm); | |
3162 | ||
3163 | ||
3164 | cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ | |
3165 | cmd->cmd_sent_to_fw = 1; | |
3166 | ||
3167 | /* Memory Barrier */ | |
3168 | wmb(); | |
3169 | if (qpair->reqq_start_iocbs) | |
3170 | qpair->reqq_start_iocbs(qpair); | |
3171 | else | |
3172 | qla2x00_start_iocbs(vha, qpair->req); | |
3173 | spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); | |
3174 | ||
3175 | return 0; | |
3176 | ||
3177 | out_unmap_unlock: | |
3178 | qlt_unmap_sg(vha, cmd); | |
3179 | spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); | |
3180 | ||
3181 | return res; | |
3182 | } | |
3183 | EXPORT_SYMBOL(qlt_xmit_response); | |
3184 | ||
3185 | int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) | |
3186 | { | |
3187 | struct ctio7_to_24xx *pkt; | |
3188 | struct scsi_qla_host *vha = cmd->vha; | |
3189 | struct qla_tgt *tgt = cmd->tgt; | |
3190 | struct qla_tgt_prm prm; | |
3191 | unsigned long flags = 0; | |
3192 | int res = 0; | |
3193 | struct qla_qpair *qpair = cmd->qpair; | |
3194 | ||
3195 | memset(&prm, 0, sizeof(prm)); | |
3196 | prm.cmd = cmd; | |
3197 | prm.tgt = tgt; | |
3198 | prm.sg = NULL; | |
3199 | prm.req_cnt = 1; | |
3200 | ||
3201 | /* Calculate number of entries and segments required */ | |
3202 | if (qlt_pci_map_calc_cnt(&prm) != 0) | |
3203 | return -EAGAIN; | |
3204 | ||
3205 | if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || | |
3206 | (cmd->sess && cmd->sess->deleted)) { | |
3207 | /* | |
3208 | * Either the port is not online or this request was from | |
3209 | * previous life, just abort the processing. | |
3210 | */ | |
3211 | cmd->state = QLA_TGT_STATE_NEED_DATA; | |
3212 | qlt_abort_cmd_on_host_reset(cmd->vha, cmd); | |
3213 | ql_dbg_qp(ql_dbg_async, qpair, 0xe102, | |
3214 | "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n", | |
3215 | vha->flags.online, qla2x00_reset_active(vha), | |
3216 | cmd->reset_count, qpair->chip_reset); | |
3217 | return 0; | |
3218 | } | |
3219 | ||
3220 | spin_lock_irqsave(qpair->qp_lock_ptr, flags); | |
3221 | /* Does F/W have an IOCBs for this request */ | |
3222 | res = qlt_check_reserve_free_req(qpair, prm.req_cnt); | |
3223 | if (res != 0) | |
3224 | goto out_unlock_free_unmap; | |
3225 | if (cmd->se_cmd.prot_op) | |
3226 | res = qlt_build_ctio_crc2_pkt(qpair, &prm); | |
3227 | else | |
3228 | res = qlt_24xx_build_ctio_pkt(qpair, &prm); | |
3229 | ||
3230 | if (unlikely(res != 0)) { | |
3231 | qpair->req->cnt += prm.req_cnt; | |
3232 | goto out_unlock_free_unmap; | |
3233 | } | |
3234 | ||
3235 | pkt = (struct ctio7_to_24xx *)prm.pkt; | |
3236 | pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT | | |
3237 | CTIO7_FLAGS_STATUS_MODE_0); | |
3238 | ||
3239 | if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) | |
3240 | qlt_load_data_segments(&prm); | |
3241 | ||
3242 | cmd->state = QLA_TGT_STATE_NEED_DATA; | |
3243 | cmd->cmd_sent_to_fw = 1; | |
3244 | ||
3245 | /* Memory Barrier */ | |
3246 | wmb(); | |
3247 | if (qpair->reqq_start_iocbs) | |
3248 | qpair->reqq_start_iocbs(qpair); | |
3249 | else | |
3250 | qla2x00_start_iocbs(vha, qpair->req); | |
3251 | spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); | |
3252 | ||
3253 | return res; | |
3254 | ||
3255 | out_unlock_free_unmap: | |
3256 | qlt_unmap_sg(vha, cmd); | |
3257 | spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); | |
3258 | ||
3259 | return res; | |
3260 | } | |
3261 | EXPORT_SYMBOL(qlt_rdy_to_xfer); | |
3262 | ||
3263 | ||
3264 | /* | |
3265 | * it is assumed either hardware_lock or qpair lock is held. | |
3266 | */ | |
3267 | static void | |
3268 | qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, | |
3269 | struct ctio_crc_from_fw *sts) | |
3270 | { | |
3271 | uint8_t *ap = &sts->actual_dif[0]; | |
3272 | uint8_t *ep = &sts->expected_dif[0]; | |
3273 | uint64_t lba = cmd->se_cmd.t_task_lba; | |
3274 | uint8_t scsi_status, sense_key, asc, ascq; | |
3275 | unsigned long flags; | |
3276 | struct scsi_qla_host *vha = cmd->vha; | |
3277 | ||
3278 | cmd->trc_flags |= TRC_DIF_ERR; | |
3279 | ||
3280 | cmd->a_guard = be16_to_cpu(*(uint16_t *)(ap + 0)); | |
3281 | cmd->a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2)); | |
3282 | cmd->a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4)); | |
3283 | ||
3284 | cmd->e_guard = be16_to_cpu(*(uint16_t *)(ep + 0)); | |
3285 | cmd->e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2)); | |
3286 | cmd->e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4)); | |
3287 | ||
3288 | ql_dbg(ql_dbg_tgt_dif, vha, 0xf075, | |
3289 | "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state); | |
3290 | ||
3291 | scsi_status = sense_key = asc = ascq = 0; | |
3292 | ||
3293 | /* check appl tag */ | |
3294 | if (cmd->e_app_tag != cmd->a_app_tag) { | |
3295 | ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d, | |
3296 | "App Tag ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard [%x|%x] cmd=%p ox_id[%04x]", | |
3297 | cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, | |
3298 | cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, | |
3299 | cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, | |
3300 | cmd->atio.u.isp24.fcp_hdr.ox_id); | |
3301 | ||
3302 | cmd->dif_err_code = DIF_ERR_APP; | |
3303 | scsi_status = SAM_STAT_CHECK_CONDITION; | |
3304 | sense_key = ABORTED_COMMAND; | |
3305 | asc = 0x10; | |
3306 | ascq = 0x2; | |
3307 | } | |
3308 | ||
3309 | /* check ref tag */ | |
3310 | if (cmd->e_ref_tag != cmd->a_ref_tag) { | |
3311 | ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e, | |
3312 | "Ref Tag ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard[%x|%x] cmd=%p ox_id[%04x] ", | |
3313 | cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, | |
3314 | cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, | |
3315 | cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, | |
3316 | cmd->atio.u.isp24.fcp_hdr.ox_id); | |
3317 | ||
3318 | cmd->dif_err_code = DIF_ERR_REF; | |
3319 | scsi_status = SAM_STAT_CHECK_CONDITION; | |
3320 | sense_key = ABORTED_COMMAND; | |
3321 | asc = 0x10; | |
3322 | ascq = 0x3; | |
3323 | goto out; | |
3324 | } | |
3325 | ||
3326 | /* check guard */ | |
3327 | if (cmd->e_guard != cmd->a_guard) { | |
3328 | ql_dbg(ql_dbg_tgt_dif, vha, 0xe012, | |
3329 | "Guard ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard [%x|%x] cmd=%p ox_id[%04x]", | |
3330 | cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, | |
3331 | cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, | |
3332 | cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, | |
3333 | cmd->atio.u.isp24.fcp_hdr.ox_id); | |
3334 | ||
3335 | cmd->dif_err_code = DIF_ERR_GRD; | |
3336 | scsi_status = SAM_STAT_CHECK_CONDITION; | |
3337 | sense_key = ABORTED_COMMAND; | |
3338 | asc = 0x10; | |
3339 | ascq = 0x1; | |
3340 | } | |
3341 | out: | |
3342 | switch (cmd->state) { | |
3343 | case QLA_TGT_STATE_NEED_DATA: | |
3344 | /* handle_data will load DIF error code */ | |
3345 | cmd->state = QLA_TGT_STATE_DATA_IN; | |
3346 | vha->hw->tgt.tgt_ops->handle_data(cmd); | |
3347 | break; | |
3348 | default: | |
3349 | spin_lock_irqsave(&cmd->cmd_lock, flags); | |
3350 | if (cmd->aborted) { | |
3351 | spin_unlock_irqrestore(&cmd->cmd_lock, flags); | |
3352 | vha->hw->tgt.tgt_ops->free_cmd(cmd); | |
3353 | break; | |
3354 | } | |
3355 | spin_unlock_irqrestore(&cmd->cmd_lock, flags); | |
3356 | ||
3357 | qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc, | |
3358 | ascq); | |
3359 | /* assume scsi status gets out on the wire. | |
3360 | * Will not wait for completion. | |
3361 | */ | |
3362 | vha->hw->tgt.tgt_ops->free_cmd(cmd); | |
3363 | break; | |
3364 | } | |
3365 | } | |
3366 | ||
3367 | /* If hardware_lock held on entry, might drop it, then reaquire */ | |
3368 | /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ | |
3369 | static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha, | |
3370 | struct imm_ntfy_from_isp *ntfy) | |
3371 | { | |
3372 | struct nack_to_isp *nack; | |
3373 | struct qla_hw_data *ha = vha->hw; | |
3374 | request_t *pkt; | |
3375 | int ret = 0; | |
3376 | ||
3377 | ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c, | |
3378 | "Sending TERM ELS CTIO (ha=%p)\n", ha); | |
3379 | ||
3380 | pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); | |
3381 | if (pkt == NULL) { | |
3382 | ql_dbg(ql_dbg_tgt, vha, 0xe080, | |
3383 | "qla_target(%d): %s failed: unable to allocate " | |
3384 | "request packet\n", vha->vp_idx, __func__); | |
3385 | return -ENOMEM; | |
3386 | } | |
3387 | ||
3388 | pkt->entry_type = NOTIFY_ACK_TYPE; | |
3389 | pkt->entry_count = 1; | |
3390 | pkt->handle = QLA_TGT_SKIP_HANDLE; | |
3391 | ||
3392 | nack = (struct nack_to_isp *)pkt; | |
3393 | nack->ox_id = ntfy->ox_id; | |
3394 | ||
3395 | nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; | |
3396 | if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { | |
3397 | nack->u.isp24.flags = ntfy->u.isp24.flags & | |
3398 | __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB); | |
3399 | } | |
3400 | ||
3401 | /* terminate */ | |
3402 | nack->u.isp24.flags |= | |
3403 | __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE); | |
3404 | ||
3405 | nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; | |
3406 | nack->u.isp24.status = ntfy->u.isp24.status; | |
3407 | nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; | |
3408 | nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; | |
3409 | nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; | |
3410 | nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; | |
3411 | nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; | |
3412 | nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; | |
3413 | ||
3414 | qla2x00_start_iocbs(vha, vha->req); | |
3415 | return ret; | |
3416 | } | |
3417 | ||
3418 | static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, | |
3419 | struct imm_ntfy_from_isp *imm, int ha_locked) | |
3420 | { | |
3421 | unsigned long flags = 0; | |
3422 | int rc; | |
3423 | ||
3424 | if (ha_locked) { | |
3425 | rc = __qlt_send_term_imm_notif(vha, imm); | |
3426 | ||
3427 | #if 0 /* Todo */ | |
3428 | if (rc == -ENOMEM) | |
3429 | qlt_alloc_qfull_cmd(vha, imm, 0, 0); | |
3430 | #else | |
3431 | if (rc) { | |
3432 | } | |
3433 | #endif | |
3434 | goto done; | |
3435 | } | |
3436 | ||
3437 | spin_lock_irqsave(&vha->hw->hardware_lock, flags); | |
3438 | rc = __qlt_send_term_imm_notif(vha, imm); | |
3439 | ||
3440 | #if 0 /* Todo */ | |
3441 | if (rc == -ENOMEM) | |
3442 | qlt_alloc_qfull_cmd(vha, imm, 0, 0); | |
3443 | #endif | |
3444 | ||
3445 | done: | |
3446 | if (!ha_locked) | |
3447 | spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); | |
3448 | } | |
3449 | ||
3450 | /* | |
3451 | * If hardware_lock held on entry, might drop it, then reaquire | |
3452 | * This function sends the appropriate CTIO to ISP 2xxx or 24xx | |
3453 | */ | |
3454 | static int __qlt_send_term_exchange(struct qla_qpair *qpair, | |
3455 | struct qla_tgt_cmd *cmd, | |
3456 | struct atio_from_isp *atio) | |
3457 | { | |
3458 | struct scsi_qla_host *vha = qpair->vha; | |
3459 | struct ctio7_to_24xx *ctio24; | |
3460 | struct qla_hw_data *ha = vha->hw; | |
3461 | request_t *pkt; | |
3462 | int ret = 0; | |
3463 | uint16_t temp; | |
3464 | ||
3465 | ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha); | |
3466 | ||
3467 | pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL); | |
3468 | if (pkt == NULL) { | |
3469 | ql_dbg(ql_dbg_tgt, vha, 0xe050, | |
3470 | "qla_target(%d): %s failed: unable to allocate " | |
3471 | "request packet\n", vha->vp_idx, __func__); | |
3472 | return -ENOMEM; | |
3473 | } | |
3474 | ||
3475 | if (cmd != NULL) { | |
3476 | if (cmd->state < QLA_TGT_STATE_PROCESSED) { | |
3477 | ql_dbg(ql_dbg_tgt, vha, 0xe051, | |
3478 | "qla_target(%d): Terminating cmd %p with " | |
3479 | "incorrect state %d\n", vha->vp_idx, cmd, | |
3480 | cmd->state); | |
3481 | } else | |
3482 | ret = 1; | |
3483 | } | |
3484 | ||
3485 | qpair->tgt_counters.num_term_xchg_sent++; | |
3486 | pkt->entry_count = 1; | |
3487 | pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; | |
3488 | ||
3489 | ctio24 = (struct ctio7_to_24xx *)pkt; | |
3490 | ctio24->entry_type = CTIO_TYPE7; | |
3491 | ctio24->nport_handle = CTIO7_NHANDLE_UNRECOGNIZED; | |
3492 | ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); | |
3493 | ctio24->vp_index = vha->vp_idx; | |
3494 | ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; | |
3495 | ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; | |
3496 | ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; | |
3497 | ctio24->exchange_addr = atio->u.isp24.exchange_addr; | |
3498 | temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 | | |
3499 | CTIO7_FLAGS_TERMINATE; | |
3500 | ctio24->u.status1.flags = cpu_to_le16(temp); | |
3501 | temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); | |
3502 | ctio24->u.status1.ox_id = cpu_to_le16(temp); | |
3503 | ||
3504 | /* Most likely, it isn't needed */ | |
3505 | ctio24->u.status1.residual = get_unaligned((uint32_t *) | |
3506 | &atio->u.isp24.fcp_cmnd.add_cdb[ | |
3507 | atio->u.isp24.fcp_cmnd.add_cdb_len]); | |
3508 | if (ctio24->u.status1.residual != 0) | |
3509 | ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER; | |
3510 | ||
3511 | /* Memory Barrier */ | |
3512 | wmb(); | |
3513 | if (qpair->reqq_start_iocbs) | |
3514 | qpair->reqq_start_iocbs(qpair); | |
3515 | else | |
3516 | qla2x00_start_iocbs(vha, qpair->req); | |
3517 | return ret; | |
3518 | } | |
3519 | ||
3520 | static void qlt_send_term_exchange(struct qla_qpair *qpair, | |
3521 | struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked, | |
3522 | int ul_abort) | |
3523 | { | |
3524 | struct scsi_qla_host *vha; | |
3525 | unsigned long flags = 0; | |
3526 | int rc; | |
3527 | ||
3528 | /* why use different vha? NPIV */ | |
3529 | if (cmd) | |
3530 | vha = cmd->vha; | |
3531 | else | |
3532 | vha = qpair->vha; | |
3533 | ||
3534 | if (ha_locked) { | |
3535 | rc = __qlt_send_term_exchange(qpair, cmd, atio); | |
3536 | if (rc == -ENOMEM) | |
3537 | qlt_alloc_qfull_cmd(vha, atio, 0, 0); | |
3538 | goto done; | |
3539 | } | |
3540 | spin_lock_irqsave(qpair->qp_lock_ptr, flags); | |
3541 | rc = __qlt_send_term_exchange(qpair, cmd, atio); | |
3542 | if (rc == -ENOMEM) | |
3543 | qlt_alloc_qfull_cmd(vha, atio, 0, 0); | |
3544 | ||
3545 | done: | |
3546 | if (cmd && !ul_abort && !cmd->aborted) { | |
3547 | if (cmd->sg_mapped) | |
3548 | qlt_unmap_sg(vha, cmd); | |
3549 | vha->hw->tgt.tgt_ops->free_cmd(cmd); | |
3550 | } | |
3551 | ||
3552 | if (!ha_locked) | |
3553 | spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); | |
3554 | ||
3555 | return; | |
3556 | } | |
3557 | ||
3558 | static void qlt_init_term_exchange(struct scsi_qla_host *vha) | |
3559 | { | |
3560 | struct list_head free_list; | |
3561 | struct qla_tgt_cmd *cmd, *tcmd; | |
3562 | ||
3563 | vha->hw->tgt.leak_exchg_thresh_hold = | |
3564 | (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT; | |
3565 | ||
3566 | cmd = tcmd = NULL; | |
3567 | if (!list_empty(&vha->hw->tgt.q_full_list)) { | |
3568 | INIT_LIST_HEAD(&free_list); | |
3569 | list_splice_init(&vha->hw->tgt.q_full_list, &free_list); | |
3570 | ||
3571 | list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { | |
3572 | list_del(&cmd->cmd_list); | |
3573 | /* This cmd was never sent to TCM. There is no need | |
3574 | * to schedule free or call free_cmd | |
3575 | */ | |
3576 | qlt_free_cmd(cmd); | |
3577 | vha->hw->tgt.num_qfull_cmds_alloc--; | |
3578 | } | |
3579 | } | |
3580 | vha->hw->tgt.num_qfull_cmds_dropped = 0; | |
3581 | } | |
3582 | ||
3583 | static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha) | |
3584 | { | |
3585 | uint32_t total_leaked; | |
3586 | ||
3587 | total_leaked = vha->hw->tgt.num_qfull_cmds_dropped; | |
3588 | ||
3589 | if (vha->hw->tgt.leak_exchg_thresh_hold && | |
3590 | (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) { | |
3591 | ||
3592 | ql_dbg(ql_dbg_tgt, vha, 0xe079, | |
3593 | "Chip reset due to exchange starvation: %d/%d.\n", | |
3594 | total_leaked, vha->hw->cur_fw_xcb_count); | |
3595 | ||
3596 | if (IS_P3P_TYPE(vha->hw)) | |
3597 | set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags); | |
3598 | else | |
3599 | set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); | |
3600 | qla2xxx_wake_dpc(vha); | |
3601 | } | |
3602 | ||
3603 | } | |
3604 | ||
3605 | int qlt_abort_cmd(struct qla_tgt_cmd *cmd) | |
3606 | { | |
3607 | struct qla_tgt *tgt = cmd->tgt; | |
3608 | struct scsi_qla_host *vha = tgt->vha; | |
3609 | struct se_cmd *se_cmd = &cmd->se_cmd; | |
3610 | unsigned long flags; | |
3611 | ||
3612 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, | |
3613 | "qla_target(%d): terminating exchange for aborted cmd=%p " | |
3614 | "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd, | |
3615 | se_cmd->tag); | |
3616 | ||
3617 | spin_lock_irqsave(&cmd->cmd_lock, flags); | |
3618 | if (cmd->aborted) { | |
3619 | spin_unlock_irqrestore(&cmd->cmd_lock, flags); | |
3620 | /* | |
3621 | * It's normal to see 2 calls in this path: | |
3622 | * 1) XFER Rdy completion + CMD_T_ABORT | |
3623 | * 2) TCM TMR - drain_state_list | |
3624 | */ | |
3625 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016, | |
3626 | "multiple abort. %p transport_state %x, t_state %x, " | |
3627 | "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state, | |
3628 | cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags); | |
3629 | return EIO; | |
3630 | } | |
3631 | cmd->aborted = 1; | |
3632 | cmd->trc_flags |= TRC_ABORT; | |
3633 | spin_unlock_irqrestore(&cmd->cmd_lock, flags); | |
3634 | ||
3635 | qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1); | |
3636 | return 0; | |
3637 | } | |
3638 | EXPORT_SYMBOL(qlt_abort_cmd); | |
3639 | ||
3640 | void qlt_free_cmd(struct qla_tgt_cmd *cmd) | |
3641 | { | |
3642 | struct fc_port *sess = cmd->sess; | |
3643 | ||
3644 | ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074, | |
3645 | "%s: se_cmd[%p] ox_id %04x\n", | |
3646 | __func__, &cmd->se_cmd, | |
3647 | be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); | |
3648 | ||
3649 | BUG_ON(cmd->cmd_in_wq); | |
3650 | ||
3651 | if (cmd->sg_mapped) | |
3652 | qlt_unmap_sg(cmd->vha, cmd); | |
3653 | ||
3654 | if (!cmd->q_full) | |
3655 | qlt_decr_num_pend_cmds(cmd->vha); | |
3656 | ||
3657 | BUG_ON(cmd->sg_mapped); | |
3658 | cmd->jiffies_at_free = get_jiffies_64(); | |
3659 | if (unlikely(cmd->free_sg)) | |
3660 | kfree(cmd->sg); | |
3661 | ||
3662 | if (!sess || !sess->se_sess) { | |
3663 | WARN_ON(1); | |
3664 | return; | |
3665 | } | |
3666 | cmd->jiffies_at_free = get_jiffies_64(); | |
3667 | percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag); | |
3668 | } | |
3669 | EXPORT_SYMBOL(qlt_free_cmd); | |
3670 | ||
3671 | /* | |
3672 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire | |
3673 | */ | |
3674 | static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio, | |
3675 | struct qla_tgt_cmd *cmd, uint32_t status) | |
3676 | { | |
3677 | int term = 0; | |
3678 | struct scsi_qla_host *vha = qpair->vha; | |
3679 | ||
3680 | if (cmd->se_cmd.prot_op) | |
3681 | ql_dbg(ql_dbg_tgt_dif, vha, 0xe013, | |
3682 | "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] " | |
3683 | "se_cmd=%p tag[%x] op %#x/%s", | |
3684 | cmd->lba, cmd->lba, | |
3685 | cmd->num_blks, &cmd->se_cmd, | |
3686 | cmd->atio.u.isp24.exchange_addr, | |
3687 | cmd->se_cmd.prot_op, | |
3688 | prot_op_str(cmd->se_cmd.prot_op)); | |
3689 | ||
3690 | if (ctio != NULL) { | |
3691 | struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio; | |
3692 | term = !(c->flags & | |
3693 | cpu_to_le16(OF_TERM_EXCH)); | |
3694 | } else | |
3695 | term = 1; | |
3696 | ||
3697 | if (term) | |
3698 | qlt_term_ctio_exchange(qpair, ctio, cmd, status); | |
3699 | ||
3700 | return term; | |
3701 | } | |
3702 | ||
3703 | ||
3704 | /* ha->hardware_lock supposed to be held on entry */ | |
3705 | static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha, | |
3706 | struct rsp_que *rsp, uint32_t handle, void *ctio) | |
3707 | { | |
3708 | struct qla_tgt_cmd *cmd = NULL; | |
3709 | struct req_que *req; | |
3710 | int qid = GET_QID(handle); | |
3711 | uint32_t h = handle & ~QLA_TGT_HANDLE_MASK; | |
3712 | ||
3713 | if (unlikely(h == QLA_TGT_SKIP_HANDLE)) | |
3714 | return NULL; | |
3715 | ||
3716 | if (qid == rsp->req->id) { | |
3717 | req = rsp->req; | |
3718 | } else if (vha->hw->req_q_map[qid]) { | |
3719 | ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a, | |
3720 | "qla_target(%d): CTIO completion with different QID %d handle %x\n", | |
3721 | vha->vp_idx, rsp->id, handle); | |
3722 | req = vha->hw->req_q_map[qid]; | |
3723 | } else { | |
3724 | return NULL; | |
3725 | } | |
3726 | ||
3727 | h &= QLA_CMD_HANDLE_MASK; | |
3728 | ||
3729 | if (h != QLA_TGT_NULL_HANDLE) { | |
3730 | if (unlikely(h >= req->num_outstanding_cmds)) { | |
3731 | ql_dbg(ql_dbg_tgt, vha, 0xe052, | |
3732 | "qla_target(%d): Wrong handle %x received\n", | |
3733 | vha->vp_idx, handle); | |
3734 | return NULL; | |
3735 | } | |
3736 | ||
3737 | cmd = (struct qla_tgt_cmd *)req->outstanding_cmds[h]; | |
3738 | if (unlikely(cmd == NULL)) { | |
3739 | ql_dbg(ql_dbg_async, vha, 0xe053, | |
3740 | "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n", | |
3741 | vha->vp_idx, handle, req->id, rsp->id); | |
3742 | return NULL; | |
3743 | } | |
3744 | req->outstanding_cmds[h] = NULL; | |
3745 | } else if (ctio != NULL) { | |
3746 | /* We can't get loop ID from CTIO7 */ | |
3747 | ql_dbg(ql_dbg_tgt, vha, 0xe054, | |
3748 | "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " | |
3749 | "support NULL handles\n", vha->vp_idx); | |
3750 | return NULL; | |
3751 | } | |
3752 | ||
3753 | return cmd; | |
3754 | } | |
3755 | ||
3756 | /* hardware_lock should be held by caller. */ | |
3757 | void | |
3758 | qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) | |
3759 | { | |
3760 | struct qla_hw_data *ha = vha->hw; | |
3761 | ||
3762 | if (cmd->sg_mapped) | |
3763 | qlt_unmap_sg(vha, cmd); | |
3764 | ||
3765 | /* TODO: fix debug message type and ids. */ | |
3766 | if (cmd->state == QLA_TGT_STATE_PROCESSED) { | |
3767 | ql_dbg(ql_dbg_io, vha, 0xff00, | |
3768 | "HOST-ABORT: state=PROCESSED.\n"); | |
3769 | } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { | |
3770 | cmd->write_data_transferred = 0; | |
3771 | cmd->state = QLA_TGT_STATE_DATA_IN; | |
3772 | ||
3773 | ql_dbg(ql_dbg_io, vha, 0xff01, | |
3774 | "HOST-ABORT: state=DATA_IN.\n"); | |
3775 | ||
3776 | ha->tgt.tgt_ops->handle_data(cmd); | |
3777 | return; | |
3778 | } else { | |
3779 | ql_dbg(ql_dbg_io, vha, 0xff03, | |
3780 | "HOST-ABORT: state=BAD(%d).\n", | |
3781 | cmd->state); | |
3782 | dump_stack(); | |
3783 | } | |
3784 | ||
3785 | cmd->trc_flags |= TRC_FLUSH; | |
3786 | ha->tgt.tgt_ops->free_cmd(cmd); | |
3787 | } | |
3788 | ||
3789 | /* | |
3790 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire | |
3791 | */ | |
3792 | static void qlt_do_ctio_completion(struct scsi_qla_host *vha, | |
3793 | struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio) | |
3794 | { | |
3795 | struct qla_hw_data *ha = vha->hw; | |
3796 | struct se_cmd *se_cmd; | |
3797 | struct qla_tgt_cmd *cmd; | |
3798 | struct qla_qpair *qpair = rsp->qpair; | |
3799 | ||
3800 | if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { | |
3801 | /* That could happen only in case of an error/reset/abort */ | |
3802 | if (status != CTIO_SUCCESS) { | |
3803 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, | |
3804 | "Intermediate CTIO received" | |
3805 | " (status %x)\n", status); | |
3806 | } | |
3807 | return; | |
3808 | } | |
3809 | ||
3810 | cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio); | |
3811 | if (cmd == NULL) | |
3812 | return; | |
3813 | ||
3814 | se_cmd = &cmd->se_cmd; | |
3815 | cmd->cmd_sent_to_fw = 0; | |
3816 | ||
3817 | qlt_unmap_sg(vha, cmd); | |
3818 | ||
3819 | if (unlikely(status != CTIO_SUCCESS)) { | |
3820 | switch (status & 0xFFFF) { | |
3821 | case CTIO_LIP_RESET: | |
3822 | case CTIO_TARGET_RESET: | |
3823 | case CTIO_ABORTED: | |
3824 | /* driver request abort via Terminate exchange */ | |
3825 | case CTIO_TIMEOUT: | |
3826 | case CTIO_INVALID_RX_ID: | |
3827 | /* They are OK */ | |
3828 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, | |
3829 | "qla_target(%d): CTIO with " | |
3830 | "status %#x received, state %x, se_cmd %p, " | |
3831 | "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, " | |
3832 | "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx, | |
3833 | status, cmd->state, se_cmd); | |
3834 | break; | |
3835 | ||
3836 | case CTIO_PORT_LOGGED_OUT: | |
3837 | case CTIO_PORT_UNAVAILABLE: | |
3838 | { | |
3839 | int logged_out = | |
3840 | (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT; | |
3841 | ||
3842 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, | |
3843 | "qla_target(%d): CTIO with %s status %x " | |
3844 | "received (state %x, se_cmd %p)\n", vha->vp_idx, | |
3845 | logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE", | |
3846 | status, cmd->state, se_cmd); | |
3847 | ||
3848 | if (logged_out && cmd->sess) { | |
3849 | /* | |
3850 | * Session is already logged out, but we need | |
3851 | * to notify initiator, who's not aware of this | |
3852 | */ | |
3853 | cmd->sess->logout_on_delete = 0; | |
3854 | cmd->sess->send_els_logo = 1; | |
3855 | ql_dbg(ql_dbg_disc, vha, 0x20f8, | |
3856 | "%s %d %8phC post del sess\n", | |
3857 | __func__, __LINE__, cmd->sess->port_name); | |
3858 | ||
3859 | qlt_schedule_sess_for_deletion_lock(cmd->sess); | |
3860 | } | |
3861 | break; | |
3862 | } | |
3863 | case CTIO_DIF_ERROR: { | |
3864 | struct ctio_crc_from_fw *crc = | |
3865 | (struct ctio_crc_from_fw *)ctio; | |
3866 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073, | |
3867 | "qla_target(%d): CTIO with DIF_ERROR status %x " | |
3868 | "received (state %x, ulp_cmd %p) actual_dif[0x%llx] " | |
3869 | "expect_dif[0x%llx]\n", | |
3870 | vha->vp_idx, status, cmd->state, se_cmd, | |
3871 | *((u64 *)&crc->actual_dif[0]), | |
3872 | *((u64 *)&crc->expected_dif[0])); | |
3873 | ||
3874 | qlt_handle_dif_error(qpair, cmd, ctio); | |
3875 | return; | |
3876 | } | |
3877 | default: | |
3878 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, | |
3879 | "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n", | |
3880 | vha->vp_idx, status, cmd->state, se_cmd); | |
3881 | break; | |
3882 | } | |
3883 | ||
3884 | ||
3885 | /* "cmd->aborted" means | |
3886 | * cmd is already aborted/terminated, we don't | |
3887 | * need to terminate again. The exchange is already | |
3888 | * cleaned up/freed at FW level. Just cleanup at driver | |
3889 | * level. | |
3890 | */ | |
3891 | if ((cmd->state != QLA_TGT_STATE_NEED_DATA) && | |
3892 | (!cmd->aborted)) { | |
3893 | cmd->trc_flags |= TRC_CTIO_ERR; | |
3894 | if (qlt_term_ctio_exchange(qpair, ctio, cmd, status)) | |
3895 | return; | |
3896 | } | |
3897 | } | |
3898 | ||
3899 | if (cmd->state == QLA_TGT_STATE_PROCESSED) { | |
3900 | cmd->trc_flags |= TRC_CTIO_DONE; | |
3901 | } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { | |
3902 | cmd->state = QLA_TGT_STATE_DATA_IN; | |
3903 | ||
3904 | if (status == CTIO_SUCCESS) | |
3905 | cmd->write_data_transferred = 1; | |
3906 | ||
3907 | ha->tgt.tgt_ops->handle_data(cmd); | |
3908 | return; | |
3909 | } else if (cmd->aborted) { | |
3910 | cmd->trc_flags |= TRC_CTIO_ABORTED; | |
3911 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, | |
3912 | "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag); | |
3913 | } else { | |
3914 | cmd->trc_flags |= TRC_CTIO_STRANGE; | |
3915 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, | |
3916 | "qla_target(%d): A command in state (%d) should " | |
3917 | "not return a CTIO complete\n", vha->vp_idx, cmd->state); | |
3918 | } | |
3919 | ||
3920 | if (unlikely(status != CTIO_SUCCESS) && | |
3921 | !cmd->aborted) { | |
3922 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); | |
3923 | dump_stack(); | |
3924 | } | |
3925 | ||
3926 | ha->tgt.tgt_ops->free_cmd(cmd); | |
3927 | } | |
3928 | ||
3929 | static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, | |
3930 | uint8_t task_codes) | |
3931 | { | |
3932 | int fcp_task_attr; | |
3933 | ||
3934 | switch (task_codes) { | |
3935 | case ATIO_SIMPLE_QUEUE: | |
3936 | fcp_task_attr = TCM_SIMPLE_TAG; | |
3937 | break; | |
3938 | case ATIO_HEAD_OF_QUEUE: | |
3939 | fcp_task_attr = TCM_HEAD_TAG; | |
3940 | break; | |
3941 | case ATIO_ORDERED_QUEUE: | |
3942 | fcp_task_attr = TCM_ORDERED_TAG; | |
3943 | break; | |
3944 | case ATIO_ACA_QUEUE: | |
3945 | fcp_task_attr = TCM_ACA_TAG; | |
3946 | break; | |
3947 | case ATIO_UNTAGGED: | |
3948 | fcp_task_attr = TCM_SIMPLE_TAG; | |
3949 | break; | |
3950 | default: | |
3951 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, | |
3952 | "qla_target: unknown task code %x, use ORDERED instead\n", | |
3953 | task_codes); | |
3954 | fcp_task_attr = TCM_ORDERED_TAG; | |
3955 | break; | |
3956 | } | |
3957 | ||
3958 | return fcp_task_attr; | |
3959 | } | |
3960 | ||
3961 | static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *, | |
3962 | uint8_t *); | |
3963 | /* | |
3964 | * Process context for I/O path into tcm_qla2xxx code | |
3965 | */ | |
3966 | static void __qlt_do_work(struct qla_tgt_cmd *cmd) | |
3967 | { | |
3968 | scsi_qla_host_t *vha = cmd->vha; | |
3969 | struct qla_hw_data *ha = vha->hw; | |
3970 | struct fc_port *sess = cmd->sess; | |
3971 | struct atio_from_isp *atio = &cmd->atio; | |
3972 | unsigned char *cdb; | |
3973 | unsigned long flags; | |
3974 | uint32_t data_length; | |
3975 | int ret, fcp_task_attr, data_dir, bidi = 0; | |
3976 | struct qla_qpair *qpair = cmd->qpair; | |
3977 | ||
3978 | cmd->cmd_in_wq = 0; | |
3979 | cmd->trc_flags |= TRC_DO_WORK; | |
3980 | ||
3981 | if (cmd->aborted) { | |
3982 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082, | |
3983 | "cmd with tag %u is aborted\n", | |
3984 | cmd->atio.u.isp24.exchange_addr); | |
3985 | goto out_term; | |
3986 | } | |
3987 | ||
3988 | spin_lock_init(&cmd->cmd_lock); | |
3989 | cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; | |
3990 | cmd->se_cmd.tag = atio->u.isp24.exchange_addr; | |
3991 | ||
3992 | if (atio->u.isp24.fcp_cmnd.rddata && | |
3993 | atio->u.isp24.fcp_cmnd.wrdata) { | |
3994 | bidi = 1; | |
3995 | data_dir = DMA_TO_DEVICE; | |
3996 | } else if (atio->u.isp24.fcp_cmnd.rddata) | |
3997 | data_dir = DMA_FROM_DEVICE; | |
3998 | else if (atio->u.isp24.fcp_cmnd.wrdata) | |
3999 | data_dir = DMA_TO_DEVICE; | |
4000 | else | |
4001 | data_dir = DMA_NONE; | |
4002 | ||
4003 | fcp_task_attr = qlt_get_fcp_task_attr(vha, | |
4004 | atio->u.isp24.fcp_cmnd.task_attr); | |
4005 | data_length = be32_to_cpu(get_unaligned((uint32_t *) | |
4006 | &atio->u.isp24.fcp_cmnd.add_cdb[ | |
4007 | atio->u.isp24.fcp_cmnd.add_cdb_len])); | |
4008 | ||
4009 | ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length, | |
4010 | fcp_task_attr, data_dir, bidi); | |
4011 | if (ret != 0) | |
4012 | goto out_term; | |
4013 | /* | |
4014 | * Drop extra session reference from qla_tgt_handle_cmd_for_atio*( | |
4015 | */ | |
4016 | spin_lock_irqsave(&ha->tgt.sess_lock, flags); | |
4017 | ha->tgt.tgt_ops->put_sess(sess); | |
4018 | spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); | |
4019 | return; | |
4020 | ||
4021 | out_term: | |
4022 | ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd); | |
4023 | /* | |
4024 | * cmd has not sent to target yet, so pass NULL as the second | |
4025 | * argument to qlt_send_term_exchange() and free the memory here. | |
4026 | */ | |
4027 | cmd->trc_flags |= TRC_DO_WORK_ERR; | |
4028 | spin_lock_irqsave(qpair->qp_lock_ptr, flags); | |
4029 | qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0); | |
4030 | ||
4031 | qlt_decr_num_pend_cmds(vha); | |
4032 | percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag); | |
4033 | spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); | |
4034 | ||
4035 | spin_lock_irqsave(&ha->tgt.sess_lock, flags); | |
4036 | ha->tgt.tgt_ops->put_sess(sess); | |
4037 | spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); | |
4038 | } | |
4039 | ||
4040 | static void qlt_do_work(struct work_struct *work) | |
4041 | { | |
4042 | struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); | |
4043 | scsi_qla_host_t *vha = cmd->vha; | |
4044 | unsigned long flags; | |
4045 | ||
4046 | spin_lock_irqsave(&vha->cmd_list_lock, flags); | |
4047 | list_del(&cmd->cmd_list); | |
4048 | spin_unlock_irqrestore(&vha->cmd_list_lock, flags); | |
4049 | ||
4050 | __qlt_do_work(cmd); | |
4051 | } | |
4052 | ||
4053 | void qlt_clr_qp_table(struct scsi_qla_host *vha) | |
4054 | { | |
4055 | unsigned long flags; | |
4056 | struct qla_hw_data *ha = vha->hw; | |
4057 | struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; | |
4058 | void *node; | |
4059 | u64 key = 0; | |
4060 | ||
4061 | ql_log(ql_log_info, vha, 0x706c, | |
4062 | "User update Number of Active Qpairs %d\n", | |
4063 | ha->tgt.num_act_qpairs); | |
4064 | ||
4065 | spin_lock_irqsave(&ha->tgt.atio_lock, flags); | |
4066 | ||
4067 | btree_for_each_safe64(&tgt->lun_qpair_map, key, node) | |
4068 | btree_remove64(&tgt->lun_qpair_map, key); | |
4069 | ||
4070 | ha->base_qpair->lun_cnt = 0; | |
4071 | for (key = 0; key < ha->max_qpairs; key++) | |
4072 | if (ha->queue_pair_map[key]) | |
4073 | ha->queue_pair_map[key]->lun_cnt = 0; | |
4074 | ||
4075 | spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); | |
4076 | } | |
4077 | ||
4078 | static void qlt_assign_qpair(struct scsi_qla_host *vha, | |
4079 | struct qla_tgt_cmd *cmd) | |
4080 | { | |
4081 | struct qla_qpair *qpair, *qp; | |
4082 | struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; | |
4083 | struct qla_qpair_hint *h; | |
4084 | ||
4085 | if (vha->flags.qpairs_available) { | |
4086 | h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun); | |
4087 | if (unlikely(!h)) { | |
4088 | /* spread lun to qpair ratio evently */ | |
4089 | int lcnt = 0, rc; | |
4090 | struct scsi_qla_host *base_vha = | |
4091 | pci_get_drvdata(vha->hw->pdev); | |
4092 | ||
4093 | qpair = vha->hw->base_qpair; | |
4094 | if (qpair->lun_cnt == 0) { | |
4095 | qpair->lun_cnt++; | |
4096 | h = qla_qpair_to_hint(tgt, qpair); | |
4097 | BUG_ON(!h); | |
4098 | rc = btree_insert64(&tgt->lun_qpair_map, | |
4099 | cmd->unpacked_lun, h, GFP_ATOMIC); | |
4100 | if (rc) { | |
4101 | qpair->lun_cnt--; | |
4102 | ql_log(ql_log_info, vha, 0xd037, | |
4103 | "Unable to insert lun %llx into lun_qpair_map\n", | |
4104 | cmd->unpacked_lun); | |
4105 | } | |
4106 | goto out; | |
4107 | } else { | |
4108 | lcnt = qpair->lun_cnt; | |
4109 | } | |
4110 | ||
4111 | h = NULL; | |
4112 | list_for_each_entry(qp, &base_vha->qp_list, | |
4113 | qp_list_elem) { | |
4114 | if (qp->lun_cnt == 0) { | |
4115 | qp->lun_cnt++; | |
4116 | h = qla_qpair_to_hint(tgt, qp); | |
4117 | BUG_ON(!h); | |
4118 | rc = btree_insert64(&tgt->lun_qpair_map, | |
4119 | cmd->unpacked_lun, h, GFP_ATOMIC); | |
4120 | if (rc) { | |
4121 | qp->lun_cnt--; | |
4122 | ql_log(ql_log_info, vha, 0xd038, | |
4123 | "Unable to insert lun %llx into lun_qpair_map\n", | |
4124 | cmd->unpacked_lun); | |
4125 | } | |
4126 | qpair = qp; | |
4127 | goto out; | |
4128 | } else { | |
4129 | if (qp->lun_cnt < lcnt) { | |
4130 | lcnt = qp->lun_cnt; | |
4131 | qpair = qp; | |
4132 | continue; | |
4133 | } | |
4134 | } | |
4135 | } | |
4136 | BUG_ON(!qpair); | |
4137 | qpair->lun_cnt++; | |
4138 | h = qla_qpair_to_hint(tgt, qpair); | |
4139 | BUG_ON(!h); | |
4140 | rc = btree_insert64(&tgt->lun_qpair_map, | |
4141 | cmd->unpacked_lun, h, GFP_ATOMIC); | |
4142 | if (rc) { | |
4143 | qpair->lun_cnt--; | |
4144 | ql_log(ql_log_info, vha, 0xd039, | |
4145 | "Unable to insert lun %llx into lun_qpair_map\n", | |
4146 | cmd->unpacked_lun); | |
4147 | } | |
4148 | } | |
4149 | } else { | |
4150 | h = &tgt->qphints[0]; | |
4151 | } | |
4152 | out: | |
4153 | cmd->qpair = h->qpair; | |
4154 | cmd->se_cmd.cpuid = h->cpuid; | |
4155 | } | |
4156 | ||
4157 | static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, | |
4158 | struct fc_port *sess, | |
4159 | struct atio_from_isp *atio) | |
4160 | { | |
4161 | struct se_session *se_sess = sess->se_sess; | |
4162 | struct qla_tgt_cmd *cmd; | |
4163 | int tag; | |
4164 | ||
4165 | tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING); | |
4166 | if (tag < 0) | |
4167 | return NULL; | |
4168 | ||
4169 | cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag]; | |
4170 | memset(cmd, 0, sizeof(struct qla_tgt_cmd)); | |
4171 | cmd->cmd_type = TYPE_TGT_CMD; | |
4172 | memcpy(&cmd->atio, atio, sizeof(*atio)); | |
4173 | cmd->state = QLA_TGT_STATE_NEW; | |
4174 | cmd->tgt = vha->vha_tgt.qla_tgt; | |
4175 | qlt_incr_num_pend_cmds(vha); | |
4176 | cmd->vha = vha; | |
4177 | cmd->se_cmd.map_tag = tag; | |
4178 | cmd->sess = sess; | |
4179 | cmd->loop_id = sess->loop_id; | |
4180 | cmd->conf_compl_supported = sess->conf_compl_supported; | |
4181 | ||
4182 | cmd->trc_flags = 0; | |
4183 | cmd->jiffies_at_alloc = get_jiffies_64(); | |
4184 | ||
4185 | cmd->unpacked_lun = scsilun_to_int( | |
4186 | (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); | |
4187 | qlt_assign_qpair(vha, cmd); | |
4188 | cmd->reset_count = vha->hw->base_qpair->chip_reset; | |
4189 | cmd->vp_idx = vha->vp_idx; | |
4190 | ||
4191 | return cmd; | |
4192 | } | |
4193 | ||
4194 | static void qlt_create_sess_from_atio(struct work_struct *work) | |
4195 | { | |
4196 | struct qla_tgt_sess_op *op = container_of(work, | |
4197 | struct qla_tgt_sess_op, work); | |
4198 | scsi_qla_host_t *vha = op->vha; | |
4199 | struct qla_hw_data *ha = vha->hw; | |
4200 | struct fc_port *sess; | |
4201 | struct qla_tgt_cmd *cmd; | |
4202 | unsigned long flags; | |
4203 | uint8_t *s_id = op->atio.u.isp24.fcp_hdr.s_id; | |
4204 | ||
4205 | spin_lock_irqsave(&vha->cmd_list_lock, flags); | |
4206 | list_del(&op->cmd_list); | |
4207 | spin_unlock_irqrestore(&vha->cmd_list_lock, flags); | |
4208 | ||
4209 | if (op->aborted) { | |
4210 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf083, | |
4211 | "sess_op with tag %u is aborted\n", | |
4212 | op->atio.u.isp24.exchange_addr); | |
4213 | goto out_term; | |
4214 | } | |
4215 | ||
4216 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022, | |
4217 | "qla_target(%d): Unable to find wwn login" | |
4218 | " (s_id %x:%x:%x), trying to create it manually\n", | |
4219 | vha->vp_idx, s_id[0], s_id[1], s_id[2]); | |
4220 | ||
4221 | if (op->atio.u.raw.entry_count > 1) { | |
4222 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023, | |
4223 | "Dropping multy entry atio %p\n", &op->atio); | |
4224 | goto out_term; | |
4225 | } | |
4226 | ||
4227 | sess = qlt_make_local_sess(vha, s_id); | |
4228 | /* sess has an extra creation ref. */ | |
4229 | ||
4230 | if (!sess) | |
4231 | goto out_term; | |
4232 | /* | |
4233 | * Now obtain a pre-allocated session tag using the original op->atio | |
4234 | * packet header, and dispatch into __qlt_do_work() using the existing | |
4235 | * process context. | |
4236 | */ | |
4237 | cmd = qlt_get_tag(vha, sess, &op->atio); | |
4238 | if (!cmd) { | |
4239 | struct qla_qpair *qpair = ha->base_qpair; | |
4240 | ||
4241 | spin_lock_irqsave(qpair->qp_lock_ptr, flags); | |
4242 | qlt_send_busy(qpair, &op->atio, SAM_STAT_BUSY); | |
4243 | spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); | |
4244 | ||
4245 | spin_lock_irqsave(&ha->tgt.sess_lock, flags); | |
4246 | ha->tgt.tgt_ops->put_sess(sess); | |
4247 | spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); | |
4248 | kfree(op); | |
4249 | return; | |
4250 | } | |
4251 | ||
4252 | /* | |
4253 | * __qlt_do_work() will call qlt_put_sess() to release | |
4254 | * the extra reference taken above by qlt_make_local_sess() | |
4255 | */ | |
4256 | __qlt_do_work(cmd); | |
4257 | kfree(op); | |
4258 | return; | |
4259 | out_term: | |
4260 | qlt_send_term_exchange(vha->hw->base_qpair, NULL, &op->atio, 0, 0); | |
4261 | kfree(op); | |
4262 | } | |
4263 | ||
4264 | /* ha->hardware_lock supposed to be held on entry */ | |
4265 | static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, | |
4266 | struct atio_from_isp *atio) | |
4267 | { | |
4268 | struct qla_hw_data *ha = vha->hw; | |
4269 | struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; | |
4270 | struct fc_port *sess; | |
4271 | struct qla_tgt_cmd *cmd; | |
4272 | unsigned long flags; | |
4273 | ||
4274 | if (unlikely(tgt->tgt_stop)) { | |
4275 | ql_dbg(ql_dbg_io, vha, 0x3061, | |
4276 | "New command while device %p is shutting down\n", tgt); | |
4277 | return -EFAULT; | |
4278 | } | |
4279 | ||
4280 | sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id); | |
4281 | if (unlikely(!sess)) { | |
4282 | struct qla_tgt_sess_op *op = kzalloc(sizeof(struct qla_tgt_sess_op), | |
4283 | GFP_ATOMIC); | |
4284 | if (!op) | |
4285 | return -ENOMEM; | |
4286 | ||
4287 | memcpy(&op->atio, atio, sizeof(*atio)); | |
4288 | op->vha = vha; | |
4289 | ||
4290 | spin_lock_irqsave(&vha->cmd_list_lock, flags); | |
4291 | list_add_tail(&op->cmd_list, &vha->qla_sess_op_cmd_list); | |
4292 | spin_unlock_irqrestore(&vha->cmd_list_lock, flags); | |
4293 | ||
4294 | INIT_WORK(&op->work, qlt_create_sess_from_atio); | |
4295 | queue_work(qla_tgt_wq, &op->work); | |
4296 | return 0; | |
4297 | } | |
4298 | ||
4299 | /* Another WWN used to have our s_id. Our PLOGI scheduled its | |
4300 | * session deletion, but it's still in sess_del_work wq */ | |
4301 | if (sess->deleted) { | |
4302 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002, | |
4303 | "New command while old session %p is being deleted\n", | |
4304 | sess); | |
4305 | return -EFAULT; | |
4306 | } | |
4307 | ||
4308 | /* | |
4309 | * Do kref_get() before returning + dropping qla_hw_data->hardware_lock. | |
4310 | */ | |
4311 | if (!kref_get_unless_zero(&sess->sess_kref)) { | |
4312 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, | |
4313 | "%s: kref_get fail, %8phC oxid %x \n", | |
4314 | __func__, sess->port_name, | |
4315 | be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); | |
4316 | return -EFAULT; | |
4317 | } | |
4318 | ||
4319 | cmd = qlt_get_tag(vha, sess, atio); | |
4320 | if (!cmd) { | |
4321 | ql_dbg(ql_dbg_io, vha, 0x3062, | |
4322 | "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); | |
4323 | spin_lock_irqsave(&ha->tgt.sess_lock, flags); | |
4324 | ha->tgt.tgt_ops->put_sess(sess); | |
4325 | spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); | |
4326 | return -ENOMEM; | |
4327 | } | |
4328 | ||
4329 | cmd->cmd_in_wq = 1; | |
4330 | cmd->trc_flags |= TRC_NEW_CMD; | |
4331 | ||
4332 | spin_lock_irqsave(&vha->cmd_list_lock, flags); | |
4333 | list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list); | |
4334 | spin_unlock_irqrestore(&vha->cmd_list_lock, flags); | |
4335 | ||
4336 | INIT_WORK(&cmd->work, qlt_do_work); | |
4337 | if (vha->flags.qpairs_available) { | |
4338 | queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work); | |
4339 | } else if (ha->msix_count) { | |
4340 | if (cmd->atio.u.isp24.fcp_cmnd.rddata) | |
4341 | queue_work_on(smp_processor_id(), qla_tgt_wq, | |
4342 | &cmd->work); | |
4343 | else | |
4344 | queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, | |
4345 | &cmd->work); | |
4346 | } else { | |
4347 | queue_work(qla_tgt_wq, &cmd->work); | |
4348 | } | |
4349 | ||
4350 | return 0; | |
4351 | } | |
4352 | ||
4353 | /* ha->hardware_lock supposed to be held on entry */ | |
4354 | static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, | |
4355 | int fn, void *iocb, int flags) | |
4356 | { | |
4357 | struct scsi_qla_host *vha = sess->vha; | |
4358 | struct qla_hw_data *ha = vha->hw; | |
4359 | struct qla_tgt_mgmt_cmd *mcmd; | |
4360 | struct atio_from_isp *a = (struct atio_from_isp *)iocb; | |
4361 | int res; | |
4362 | ||
4363 | mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); | |
4364 | if (!mcmd) { | |
4365 | ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, | |
4366 | "qla_target(%d): Allocation of management " | |
4367 | "command failed, some commands and their data could " | |
4368 | "leak\n", vha->vp_idx); | |
4369 | return -ENOMEM; | |
4370 | } | |
4371 | memset(mcmd, 0, sizeof(*mcmd)); | |
4372 | mcmd->sess = sess; | |
4373 | ||
4374 | if (iocb) { | |
4375 | memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, | |
4376 | sizeof(mcmd->orig_iocb.imm_ntfy)); | |
4377 | } | |
4378 | mcmd->tmr_func = fn; | |
4379 | mcmd->flags = flags; | |
4380 | mcmd->reset_count = ha->base_qpair->chip_reset; | |
4381 | mcmd->qpair = ha->base_qpair; | |
4382 | ||
4383 | switch (fn) { | |
4384 | case QLA_TGT_LUN_RESET: | |
4385 | abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id); | |
4386 | break; | |
4387 | } | |
4388 | ||
4389 | res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, mcmd->tmr_func, 0); | |
4390 | if (res != 0) { | |
4391 | ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b, | |
4392 | "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n", | |
4393 | sess->vha->vp_idx, res); | |
4394 | mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); | |
4395 | return -EFAULT; | |
4396 | } | |
4397 | ||
4398 | return 0; | |
4399 | } | |
4400 | ||
4401 | /* ha->hardware_lock supposed to be held on entry */ | |
4402 | static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) | |
4403 | { | |
4404 | struct atio_from_isp *a = (struct atio_from_isp *)iocb; | |
4405 | struct qla_hw_data *ha = vha->hw; | |
4406 | struct qla_tgt *tgt; | |
4407 | struct fc_port *sess; | |
4408 | u64 unpacked_lun; | |
4409 | int fn; | |
4410 | unsigned long flags; | |
4411 | ||
4412 | tgt = vha->vha_tgt.qla_tgt; | |
4413 | ||
4414 | fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; | |
4415 | ||
4416 | spin_lock_irqsave(&ha->tgt.sess_lock, flags); | |
4417 | sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, | |
4418 | a->u.isp24.fcp_hdr.s_id); | |
4419 | spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); | |
4420 | ||
4421 | unpacked_lun = | |
4422 | scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); | |
4423 | ||
4424 | if (!sess) { | |
4425 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024, | |
4426 | "qla_target(%d): task mgmt fn 0x%x for " | |
4427 | "non-existant session\n", vha->vp_idx, fn); | |
4428 | return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb, | |
4429 | sizeof(struct atio_from_isp)); | |
4430 | } | |
4431 | ||
4432 | if (sess->deleted) | |
4433 | return -EFAULT; | |
4434 | ||
4435 | return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); | |
4436 | } | |
4437 | ||
4438 | /* ha->hardware_lock supposed to be held on entry */ | |
4439 | static int __qlt_abort_task(struct scsi_qla_host *vha, | |
4440 | struct imm_ntfy_from_isp *iocb, struct fc_port *sess) | |
4441 | { | |
4442 | struct atio_from_isp *a = (struct atio_from_isp *)iocb; | |
4443 | struct qla_hw_data *ha = vha->hw; | |
4444 | struct qla_tgt_mgmt_cmd *mcmd; | |
4445 | u64 unpacked_lun; | |
4446 | int rc; | |
4447 | ||
4448 | mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); | |
4449 | if (mcmd == NULL) { | |
4450 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, | |
4451 | "qla_target(%d): %s: Allocation of ABORT cmd failed\n", | |
4452 | vha->vp_idx, __func__); | |
4453 | return -ENOMEM; | |
4454 | } | |
4455 | memset(mcmd, 0, sizeof(*mcmd)); | |
4456 | ||
4457 | mcmd->sess = sess; | |
4458 | memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, | |
4459 | sizeof(mcmd->orig_iocb.imm_ntfy)); | |
4460 | ||
4461 | unpacked_lun = | |
4462 | scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); | |
4463 | mcmd->reset_count = ha->base_qpair->chip_reset; | |
4464 | mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK; | |
4465 | mcmd->qpair = ha->base_qpair; | |
4466 | ||
4467 | rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func, | |
4468 | le16_to_cpu(iocb->u.isp2x.seq_id)); | |
4469 | if (rc != 0) { | |
4470 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, | |
4471 | "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", | |
4472 | vha->vp_idx, rc); | |
4473 | mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); | |
4474 | return -EFAULT; | |
4475 | } | |
4476 | ||
4477 | return 0; | |
4478 | } | |
4479 | ||
4480 | /* ha->hardware_lock supposed to be held on entry */ | |
4481 | static int qlt_abort_task(struct scsi_qla_host *vha, | |
4482 | struct imm_ntfy_from_isp *iocb) | |
4483 | { | |
4484 | struct qla_hw_data *ha = vha->hw; | |
4485 | struct fc_port *sess; | |
4486 | int loop_id; | |
4487 | unsigned long flags; | |
4488 | ||
4489 | loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); | |
4490 | ||
4491 | spin_lock_irqsave(&ha->tgt.sess_lock, flags); | |
4492 | sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); | |
4493 | spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); | |
4494 | ||
4495 | if (sess == NULL) { | |
4496 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, | |
4497 | "qla_target(%d): task abort for unexisting " | |
4498 | "session\n", vha->vp_idx); | |
4499 | return qlt_sched_sess_work(vha->vha_tgt.qla_tgt, | |
4500 | QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); | |
4501 | } | |
4502 | ||
4503 | return __qlt_abort_task(vha, iocb, sess); | |
4504 | } | |
4505 | ||
4506 | void qlt_logo_completion_handler(fc_port_t *fcport, int rc) | |
4507 | { | |
4508 | if (rc != MBS_COMMAND_COMPLETE) { | |
4509 | ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093, | |
4510 | "%s: se_sess %p / sess %p from" | |
4511 | " port %8phC loop_id %#04x s_id %02x:%02x:%02x" | |
4512 | " LOGO failed: %#x\n", | |
4513 | __func__, | |
4514 | fcport->se_sess, | |
4515 | fcport, | |
4516 | fcport->port_name, fcport->loop_id, | |
4517 | fcport->d_id.b.domain, fcport->d_id.b.area, | |
4518 | fcport->d_id.b.al_pa, rc); | |
4519 | } | |
4520 | ||
4521 | fcport->logout_completed = 1; | |
4522 | } | |
4523 | ||
4524 | /* | |
4525 | * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) | |
4526 | * | |
4527 | * Schedules sessions with matching port_id/loop_id but different wwn for | |
4528 | * deletion. Returns existing session with matching wwn if present. | |
4529 | * Null otherwise. | |
4530 | */ | |
4531 | struct fc_port * | |
4532 | qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn, | |
4533 | port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess) | |
4534 | { | |
4535 | struct fc_port *sess = NULL, *other_sess; | |
4536 | uint64_t other_wwn; | |
4537 | ||
4538 | *conflict_sess = NULL; | |
4539 | ||
4540 | list_for_each_entry(other_sess, &vha->vp_fcports, list) { | |
4541 | ||
4542 | other_wwn = wwn_to_u64(other_sess->port_name); | |
4543 | ||
4544 | if (wwn == other_wwn) { | |
4545 | WARN_ON(sess); | |
4546 | sess = other_sess; | |
4547 | continue; | |
4548 | } | |
4549 | ||
4550 | /* find other sess with nport_id collision */ | |
4551 | if (port_id.b24 == other_sess->d_id.b24) { | |
4552 | if (loop_id != other_sess->loop_id) { | |
4553 | ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000c, | |
4554 | "Invalidating sess %p loop_id %d wwn %llx.\n", | |
4555 | other_sess, other_sess->loop_id, other_wwn); | |
4556 | ||
4557 | /* | |
4558 | * logout_on_delete is set by default, but another | |
4559 | * session that has the same s_id/loop_id combo | |
4560 | * might have cleared it when requested this session | |
4561 | * deletion, so don't touch it | |
4562 | */ | |
4563 | qlt_schedule_sess_for_deletion(other_sess, true); | |
4564 | } else { | |
4565 | /* | |
4566 | * Another wwn used to have our s_id/loop_id | |
4567 | * kill the session, but don't free the loop_id | |
4568 | */ | |
4569 | ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01b, | |
4570 | "Invalidating sess %p loop_id %d wwn %llx.\n", | |
4571 | other_sess, other_sess->loop_id, other_wwn); | |
4572 | ||
4573 | ||
4574 | other_sess->keep_nport_handle = 1; | |
4575 | *conflict_sess = other_sess; | |
4576 | qlt_schedule_sess_for_deletion(other_sess, | |
4577 | true); | |
4578 | } | |
4579 | continue; | |
4580 | } | |
4581 | ||
4582 | /* find other sess with nport handle collision */ | |
4583 | if ((loop_id == other_sess->loop_id) && | |
4584 | (loop_id != FC_NO_LOOP_ID)) { | |
4585 | ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000d, | |
4586 | "Invalidating sess %p loop_id %d wwn %llx.\n", | |
4587 | other_sess, other_sess->loop_id, other_wwn); | |
4588 | ||
4589 | /* Same loop_id but different s_id | |
4590 | * Ok to kill and logout */ | |
4591 | qlt_schedule_sess_for_deletion(other_sess, true); | |
4592 | } | |
4593 | } | |
4594 | ||
4595 | return sess; | |
4596 | } | |
4597 | ||
4598 | /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */ | |
4599 | static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id) | |
4600 | { | |
4601 | struct qla_tgt_sess_op *op; | |
4602 | struct qla_tgt_cmd *cmd; | |
4603 | uint32_t key; | |
4604 | int count = 0; | |
4605 | unsigned long flags; | |
4606 | ||
4607 | key = (((u32)s_id->b.domain << 16) | | |
4608 | ((u32)s_id->b.area << 8) | | |
4609 | ((u32)s_id->b.al_pa)); | |
4610 | ||
4611 | spin_lock_irqsave(&vha->cmd_list_lock, flags); | |
4612 | list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { | |
4613 | uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); | |
4614 | ||
4615 | if (op_key == key) { | |
4616 | op->aborted = true; | |
4617 | count++; | |
4618 | } | |
4619 | } | |
4620 | ||
4621 | list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { | |
4622 | uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); | |
4623 | if (op_key == key) { | |
4624 | op->aborted = true; | |
4625 | count++; | |
4626 | } | |
4627 | } | |
4628 | ||
4629 | list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { | |
4630 | uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); | |
4631 | if (cmd_key == key) { | |
4632 | cmd->aborted = 1; | |
4633 | count++; | |
4634 | } | |
4635 | } | |
4636 | spin_unlock_irqrestore(&vha->cmd_list_lock, flags); | |
4637 | ||
4638 | return count; | |
4639 | } | |
4640 | ||
4641 | /* | |
4642 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire | |
4643 | */ | |
4644 | static int qlt_24xx_handle_els(struct scsi_qla_host *vha, | |
4645 | struct imm_ntfy_from_isp *iocb) | |
4646 | { | |
4647 | struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; | |
4648 | struct qla_hw_data *ha = vha->hw; | |
4649 | struct fc_port *sess = NULL, *conflict_sess = NULL; | |
4650 | uint64_t wwn; | |
4651 | port_id_t port_id; | |
4652 | uint16_t loop_id; | |
4653 | uint16_t wd3_lo; | |
4654 | int res = 0; | |
4655 | struct qlt_plogi_ack_t *pla; | |
4656 | unsigned long flags; | |
4657 | ||
4658 | wwn = wwn_to_u64(iocb->u.isp24.port_name); | |
4659 | ||
4660 | port_id.b.domain = iocb->u.isp24.port_id[2]; | |
4661 | port_id.b.area = iocb->u.isp24.port_id[1]; | |
4662 | port_id.b.al_pa = iocb->u.isp24.port_id[0]; | |
4663 | port_id.b.rsvd_1 = 0; | |
4664 | ||
4665 | loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); | |
4666 | ||
4667 | ql_dbg(ql_dbg_disc, vha, 0xf026, | |
4668 | "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n", | |
4669 | vha->vp_idx, iocb->u.isp24.port_id[2], | |
4670 | iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], | |
4671 | iocb->u.isp24.status_subcode, loop_id, | |
4672 | iocb->u.isp24.port_name); | |
4673 | ||
4674 | /* res = 1 means ack at the end of thread | |
4675 | * res = 0 means ack async/later. | |
4676 | */ | |
4677 | switch (iocb->u.isp24.status_subcode) { | |
4678 | case ELS_PLOGI: | |
4679 | ||
4680 | /* Mark all stale commands in qla_tgt_wq for deletion */ | |
4681 | abort_cmds_for_s_id(vha, &port_id); | |
4682 | ||
4683 | if (wwn) { | |
4684 | spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); | |
4685 | sess = qlt_find_sess_invalidate_other(vha, wwn, | |
4686 | port_id, loop_id, &conflict_sess); | |
4687 | spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); | |
4688 | } | |
4689 | ||
4690 | if (IS_SW_RESV_ADDR(port_id)) { | |
4691 | res = 1; | |
4692 | break; | |
4693 | } | |
4694 | ||
4695 | pla = qlt_plogi_ack_find_add(vha, &port_id, iocb); | |
4696 | if (!pla) { | |
4697 | qlt_send_term_imm_notif(vha, iocb, 1); | |
4698 | break; | |
4699 | } | |
4700 | ||
4701 | res = 0; | |
4702 | ||
4703 | if (conflict_sess) { | |
4704 | conflict_sess->login_gen++; | |
4705 | qlt_plogi_ack_link(vha, pla, conflict_sess, | |
4706 | QLT_PLOGI_LINK_CONFLICT); | |
4707 | } | |
4708 | ||
4709 | if (!sess) { | |
4710 | pla->ref_count++; | |
4711 | qla24xx_post_newsess_work(vha, &port_id, | |
4712 | iocb->u.isp24.port_name, pla); | |
4713 | res = 0; | |
4714 | break; | |
4715 | } | |
4716 | ||
4717 | qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN); | |
4718 | sess->fw_login_state = DSC_LS_PLOGI_PEND; | |
4719 | sess->d_id = port_id; | |
4720 | sess->login_gen++; | |
4721 | ||
4722 | switch (sess->disc_state) { | |
4723 | case DSC_DELETED: | |
4724 | qlt_plogi_ack_unref(vha, pla); | |
4725 | break; | |
4726 | ||
4727 | default: | |
4728 | /* | |
4729 | * Under normal circumstances we want to release nport handle | |
4730 | * during LOGO process to avoid nport handle leaks inside FW. | |
4731 | * The exception is when LOGO is done while another PLOGI with | |
4732 | * the same nport handle is waiting as might be the case here. | |
4733 | * Note: there is always a possibily of a race where session | |
4734 | * deletion has already started for other reasons (e.g. ACL | |
4735 | * removal) and now PLOGI arrives: | |
4736 | * 1. if PLOGI arrived in FW after nport handle has been freed, | |
4737 | * FW must have assigned this PLOGI a new/same handle and we | |
4738 | * can proceed ACK'ing it as usual when session deletion | |
4739 | * completes. | |
4740 | * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT | |
4741 | * bit reached it, the handle has now been released. We'll | |
4742 | * get an error when we ACK this PLOGI. Nothing will be sent | |
4743 | * back to initiator. Initiator should eventually retry | |
4744 | * PLOGI and situation will correct itself. | |
4745 | */ | |
4746 | sess->keep_nport_handle = ((sess->loop_id == loop_id) && | |
4747 | (sess->d_id.b24 == port_id.b24)); | |
4748 | ||
4749 | ql_dbg(ql_dbg_disc, vha, 0x20f9, | |
4750 | "%s %d %8phC post del sess\n", | |
4751 | __func__, __LINE__, sess->port_name); | |
4752 | ||
4753 | ||
4754 | qlt_schedule_sess_for_deletion_lock(sess); | |
4755 | break; | |
4756 | } | |
4757 | ||
4758 | break; | |
4759 | ||
4760 | case ELS_PRLI: | |
4761 | wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); | |
4762 | ||
4763 | if (wwn) { | |
4764 | spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); | |
4765 | sess = qlt_find_sess_invalidate_other(vha, wwn, port_id, | |
4766 | loop_id, &conflict_sess); | |
4767 | spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); | |
4768 | } | |
4769 | ||
4770 | if (conflict_sess) { | |
4771 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b, | |
4772 | "PRLI with conflicting sess %p port %8phC\n", | |
4773 | conflict_sess, conflict_sess->port_name); | |
4774 | qlt_send_term_imm_notif(vha, iocb, 1); | |
4775 | res = 0; | |
4776 | break; | |
4777 | } | |
4778 | ||
4779 | if (sess != NULL) { | |
4780 | if (sess->fw_login_state != DSC_LS_PLOGI_PEND && | |
4781 | sess->fw_login_state != DSC_LS_PLOGI_COMP) { | |
4782 | /* | |
4783 | * Impatient initiator sent PRLI before last | |
4784 | * PLOGI could finish. Will force him to re-try, | |
4785 | * while last one finishes. | |
4786 | */ | |
4787 | ql_log(ql_log_warn, sess->vha, 0xf095, | |
4788 | "sess %p PRLI received, before plogi ack.\n", | |
4789 | sess); | |
4790 | qlt_send_term_imm_notif(vha, iocb, 1); | |
4791 | res = 0; | |
4792 | break; | |
4793 | } | |
4794 | ||
4795 | /* | |
4796 | * This shouldn't happen under normal circumstances, | |
4797 | * since we have deleted the old session during PLOGI | |
4798 | */ | |
4799 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096, | |
4800 | "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n", | |
4801 | sess->loop_id, sess, iocb->u.isp24.nport_handle); | |
4802 | ||
4803 | sess->local = 0; | |
4804 | sess->loop_id = loop_id; | |
4805 | sess->d_id = port_id; | |
4806 | sess->fw_login_state = DSC_LS_PRLI_PEND; | |
4807 | ||
4808 | if (wd3_lo & BIT_7) | |
4809 | sess->conf_compl_supported = 1; | |
4810 | ||
4811 | if ((wd3_lo & BIT_4) == 0) | |
4812 | sess->port_type = FCT_INITIATOR; | |
4813 | else | |
4814 | sess->port_type = FCT_TARGET; | |
4815 | } | |
4816 | res = 1; /* send notify ack */ | |
4817 | ||
4818 | /* Make session global (not used in fabric mode) */ | |
4819 | if (ha->current_topology != ISP_CFG_F) { | |
4820 | if (sess) { | |
4821 | ql_dbg(ql_dbg_disc, vha, 0x20fa, | |
4822 | "%s %d %8phC post nack\n", | |
4823 | __func__, __LINE__, sess->port_name); | |
4824 | qla24xx_post_nack_work(vha, sess, iocb, | |
4825 | SRB_NACK_PRLI); | |
4826 | res = 0; | |
4827 | } else { | |
4828 | set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags); | |
4829 | set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags); | |
4830 | qla2xxx_wake_dpc(vha); | |
4831 | } | |
4832 | } else { | |
4833 | if (sess) { | |
4834 | ql_dbg(ql_dbg_disc, vha, 0x20fb, | |
4835 | "%s %d %8phC post nack\n", | |
4836 | __func__, __LINE__, sess->port_name); | |
4837 | qla24xx_post_nack_work(vha, sess, iocb, | |
4838 | SRB_NACK_PRLI); | |
4839 | res = 0; | |
4840 | } | |
4841 | } | |
4842 | break; | |
4843 | ||
4844 | case ELS_TPRLO: | |
4845 | if (le16_to_cpu(iocb->u.isp24.flags) & | |
4846 | NOTIFY24XX_FLAGS_GLOBAL_TPRLO) { | |
4847 | loop_id = 0xFFFF; | |
4848 | qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS); | |
4849 | res = 1; | |
4850 | break; | |
4851 | } | |
4852 | /* drop through */ | |
4853 | case ELS_LOGO: | |
4854 | case ELS_PRLO: | |
4855 | spin_lock_irqsave(&ha->tgt.sess_lock, flags); | |
4856 | sess = qla2x00_find_fcport_by_loopid(vha, loop_id); | |
4857 | spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); | |
4858 | ||
4859 | if (sess) { | |
4860 | sess->login_gen++; | |
4861 | sess->fw_login_state = DSC_LS_LOGO_PEND; | |
4862 | sess->logo_ack_needed = 1; | |
4863 | memcpy(sess->iocb, iocb, IOCB_SIZE); | |
4864 | } | |
4865 | ||
4866 | res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); | |
4867 | ||
4868 | ql_dbg(ql_dbg_disc, vha, 0x20fc, | |
4869 | "%s: logo %llx res %d sess %p ", | |
4870 | __func__, wwn, res, sess); | |
4871 | if (res == 0) { | |
4872 | /* | |
4873 | * cmd went upper layer, look for qlt_xmit_tm_rsp() | |
4874 | * for LOGO_ACK & sess delete | |
4875 | */ | |
4876 | BUG_ON(!sess); | |
4877 | res = 0; | |
4878 | } else { | |
4879 | /* cmd did not go to upper layer. */ | |
4880 | if (sess) { | |
4881 | qlt_schedule_sess_for_deletion_lock(sess); | |
4882 | res = 0; | |
4883 | } | |
4884 | /* else logo will be ack */ | |
4885 | } | |
4886 | break; | |
4887 | case ELS_PDISC: | |
4888 | case ELS_ADISC: | |
4889 | { | |
4890 | struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; | |
4891 | if (tgt->link_reinit_iocb_pending) { | |
4892 | qlt_send_notify_ack(ha->base_qpair, | |
4893 | &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); | |
4894 | tgt->link_reinit_iocb_pending = 0; | |
4895 | } | |
4896 | ||
4897 | sess = qla2x00_find_fcport_by_wwpn(vha, | |
4898 | iocb->u.isp24.port_name, 1); | |
4899 | if (sess) { | |
4900 | ql_dbg(ql_dbg_disc, vha, 0x20fd, | |
4901 | "sess %p lid %d|%d DS %d LS %d\n", | |
4902 | sess, sess->loop_id, loop_id, | |
4903 | sess->disc_state, sess->fw_login_state); | |
4904 | } | |
4905 | ||
4906 | res = 1; /* send notify ack */ | |
4907 | break; | |
4908 | } | |
4909 | ||
4910 | case ELS_FLOGI: /* should never happen */ | |
4911 | default: | |
4912 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, | |
4913 | "qla_target(%d): Unsupported ELS command %x " | |
4914 | "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); | |
4915 | res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); | |
4916 | break; | |
4917 | } | |
4918 | ||
4919 | return res; | |
4920 | } | |
4921 | ||
4922 | /* | |
4923 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire | |
4924 | */ | |
4925 | static void qlt_handle_imm_notify(struct scsi_qla_host *vha, | |
4926 | struct imm_ntfy_from_isp *iocb) | |
4927 | { | |
4928 | struct qla_hw_data *ha = vha->hw; | |
4929 | uint32_t add_flags = 0; | |
4930 | int send_notify_ack = 1; | |
4931 | uint16_t status; | |
4932 | ||
4933 | status = le16_to_cpu(iocb->u.isp2x.status); | |
4934 | switch (status) { | |
4935 | case IMM_NTFY_LIP_RESET: | |
4936 | { | |
4937 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, | |
4938 | "qla_target(%d): LIP reset (loop %#x), subcode %x\n", | |
4939 | vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), | |
4940 | iocb->u.isp24.status_subcode); | |
4941 | ||
4942 | if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) | |
4943 | send_notify_ack = 0; | |
4944 | break; | |
4945 | } | |
4946 | ||
4947 | case IMM_NTFY_LIP_LINK_REINIT: | |
4948 | { | |
4949 | struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; | |
4950 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, | |
4951 | "qla_target(%d): LINK REINIT (loop %#x, " | |
4952 | "subcode %x)\n", vha->vp_idx, | |
4953 | le16_to_cpu(iocb->u.isp24.nport_handle), | |
4954 | iocb->u.isp24.status_subcode); | |
4955 | if (tgt->link_reinit_iocb_pending) { | |
4956 | qlt_send_notify_ack(ha->base_qpair, | |
4957 | &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); | |
4958 | } | |
4959 | memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); | |
4960 | tgt->link_reinit_iocb_pending = 1; | |
4961 | /* | |
4962 | * QLogic requires to wait after LINK REINIT for possible | |
4963 | * PDISC or ADISC ELS commands | |
4964 | */ | |
4965 | send_notify_ack = 0; | |
4966 | break; | |
4967 | } | |
4968 | ||
4969 | case IMM_NTFY_PORT_LOGOUT: | |
4970 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, | |
4971 | "qla_target(%d): Port logout (loop " | |
4972 | "%#x, subcode %x)\n", vha->vp_idx, | |
4973 | le16_to_cpu(iocb->u.isp24.nport_handle), | |
4974 | iocb->u.isp24.status_subcode); | |
4975 | ||
4976 | if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) | |
4977 | send_notify_ack = 0; | |
4978 | /* The sessions will be cleared in the callback, if needed */ | |
4979 | break; | |
4980 | ||
4981 | case IMM_NTFY_GLBL_TPRLO: | |
4982 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, | |
4983 | "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); | |
4984 | if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) | |
4985 | send_notify_ack = 0; | |
4986 | /* The sessions will be cleared in the callback, if needed */ | |
4987 | break; | |
4988 | ||
4989 | case IMM_NTFY_PORT_CONFIG: | |
4990 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, | |
4991 | "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, | |
4992 | status); | |
4993 | if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) | |
4994 | send_notify_ack = 0; | |
4995 | /* The sessions will be cleared in the callback, if needed */ | |
4996 | break; | |
4997 | ||
4998 | case IMM_NTFY_GLBL_LOGO: | |
4999 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, | |
5000 | "qla_target(%d): Link failure detected\n", | |
5001 | vha->vp_idx); | |
5002 | /* I_T nexus loss */ | |
5003 | if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) | |
5004 | send_notify_ack = 0; | |
5005 | break; | |
5006 | ||
5007 | case IMM_NTFY_IOCB_OVERFLOW: | |
5008 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, | |
5009 | "qla_target(%d): Cannot provide requested " | |
5010 | "capability (IOCB overflowed the immediate notify " | |
5011 | "resource count)\n", vha->vp_idx); | |
5012 | break; | |
5013 | ||
5014 | case IMM_NTFY_ABORT_TASK: | |
5015 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, | |
5016 | "qla_target(%d): Abort Task (S %08x I %#x -> " | |
5017 | "L %#x)\n", vha->vp_idx, | |
5018 | le16_to_cpu(iocb->u.isp2x.seq_id), | |
5019 | GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), | |
5020 | le16_to_cpu(iocb->u.isp2x.lun)); | |
5021 | if (qlt_abort_task(vha, iocb) == 0) | |
5022 | send_notify_ack = 0; | |
5023 | break; | |
5024 | ||
5025 | case IMM_NTFY_RESOURCE: | |
5026 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, | |
5027 | "qla_target(%d): Out of resources, host %ld\n", | |
5028 | vha->vp_idx, vha->host_no); | |
5029 | break; | |
5030 | ||
5031 | case IMM_NTFY_MSG_RX: | |
5032 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, | |
5033 | "qla_target(%d): Immediate notify task %x\n", | |
5034 | vha->vp_idx, iocb->u.isp2x.task_flags); | |
5035 | if (qlt_handle_task_mgmt(vha, iocb) == 0) | |
5036 | send_notify_ack = 0; | |
5037 | break; | |
5038 | ||
5039 | case IMM_NTFY_ELS: | |
5040 | if (qlt_24xx_handle_els(vha, iocb) == 0) | |
5041 | send_notify_ack = 0; | |
5042 | break; | |
5043 | default: | |
5044 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, | |
5045 | "qla_target(%d): Received unknown immediate " | |
5046 | "notify status %x\n", vha->vp_idx, status); | |
5047 | break; | |
5048 | } | |
5049 | ||
5050 | if (send_notify_ack) | |
5051 | qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0, | |
5052 | 0, 0); | |
5053 | } | |
5054 | ||
5055 | /* | |
5056 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire | |
5057 | * This function sends busy to ISP 2xxx or 24xx. | |
5058 | */ | |
5059 | static int __qlt_send_busy(struct qla_qpair *qpair, | |
5060 | struct atio_from_isp *atio, uint16_t status) | |
5061 | { | |
5062 | struct scsi_qla_host *vha = qpair->vha; | |
5063 | struct ctio7_to_24xx *ctio24; | |
5064 | struct qla_hw_data *ha = vha->hw; | |
5065 | request_t *pkt; | |
5066 | struct fc_port *sess = NULL; | |
5067 | unsigned long flags; | |
5068 | u16 temp; | |
5069 | ||
5070 | spin_lock_irqsave(&ha->tgt.sess_lock, flags); | |
5071 | sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, | |
5072 | atio->u.isp24.fcp_hdr.s_id); | |
5073 | spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); | |
5074 | if (!sess) { | |
5075 | qlt_send_term_exchange(qpair, NULL, atio, 1, 0); | |
5076 | return 0; | |
5077 | } | |
5078 | /* Sending marker isn't necessary, since we called from ISR */ | |
5079 | ||
5080 | pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); | |
5081 | if (!pkt) { | |
5082 | ql_dbg(ql_dbg_io, vha, 0x3063, | |
5083 | "qla_target(%d): %s failed: unable to allocate " | |
5084 | "request packet", vha->vp_idx, __func__); | |
5085 | return -ENOMEM; | |
5086 | } | |
5087 | ||
5088 | qpair->tgt_counters.num_q_full_sent++; | |
5089 | pkt->entry_count = 1; | |
5090 | pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; | |
5091 | ||
5092 | ctio24 = (struct ctio7_to_24xx *)pkt; | |
5093 | ctio24->entry_type = CTIO_TYPE7; | |
5094 | ctio24->nport_handle = sess->loop_id; | |
5095 | ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); | |
5096 | ctio24->vp_index = vha->vp_idx; | |
5097 | ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; | |
5098 | ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; | |
5099 | ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; | |
5100 | ctio24->exchange_addr = atio->u.isp24.exchange_addr; | |
5101 | temp = (atio->u.isp24.attr << 9) | | |
5102 | CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | | |
5103 | CTIO7_FLAGS_DONT_RET_CTIO; | |
5104 | ctio24->u.status1.flags = cpu_to_le16(temp); | |
5105 | /* | |
5106 | * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, | |
5107 | * if the explicit conformation is used. | |
5108 | */ | |
5109 | ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id); | |
5110 | ctio24->u.status1.scsi_status = cpu_to_le16(status); | |
5111 | /* Memory Barrier */ | |
5112 | wmb(); | |
5113 | if (qpair->reqq_start_iocbs) | |
5114 | qpair->reqq_start_iocbs(qpair); | |
5115 | else | |
5116 | qla2x00_start_iocbs(vha, qpair->req); | |
5117 | return 0; | |
5118 | } | |
5119 | ||
5120 | /* | |
5121 | * This routine is used to allocate a command for either a QFull condition | |
5122 | * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go | |
5123 | * out previously. | |
5124 | */ | |
5125 | static void | |
5126 | qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, | |
5127 | struct atio_from_isp *atio, uint16_t status, int qfull) | |
5128 | { | |
5129 | struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; | |
5130 | struct qla_hw_data *ha = vha->hw; | |
5131 | struct fc_port *sess; | |
5132 | struct se_session *se_sess; | |
5133 | struct qla_tgt_cmd *cmd; | |
5134 | int tag; | |
5135 | unsigned long flags; | |
5136 | ||
5137 | if (unlikely(tgt->tgt_stop)) { | |
5138 | ql_dbg(ql_dbg_io, vha, 0x300a, | |
5139 | "New command while device %p is shutting down\n", tgt); | |
5140 | return; | |
5141 | } | |
5142 | ||
5143 | if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) { | |
5144 | vha->hw->tgt.num_qfull_cmds_dropped++; | |
5145 | if (vha->hw->tgt.num_qfull_cmds_dropped > | |
5146 | vha->qla_stats.stat_max_qfull_cmds_dropped) | |
5147 | vha->qla_stats.stat_max_qfull_cmds_dropped = | |
5148 | vha->hw->tgt.num_qfull_cmds_dropped; | |
5149 | ||
5150 | ql_dbg(ql_dbg_io, vha, 0x3068, | |
5151 | "qla_target(%d): %s: QFull CMD dropped[%d]\n", | |
5152 | vha->vp_idx, __func__, | |
5153 | vha->hw->tgt.num_qfull_cmds_dropped); | |
5154 | ||
5155 | qlt_chk_exch_leak_thresh_hold(vha); | |
5156 | return; | |
5157 | } | |
5158 | ||
5159 | sess = ha->tgt.tgt_ops->find_sess_by_s_id | |
5160 | (vha, atio->u.isp24.fcp_hdr.s_id); | |
5161 | if (!sess) | |
5162 | return; | |
5163 | ||
5164 | se_sess = sess->se_sess; | |
5165 | ||
5166 | tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING); | |
5167 | if (tag < 0) | |
5168 | return; | |
5169 | ||
5170 | cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag]; | |
5171 | if (!cmd) { | |
5172 | ql_dbg(ql_dbg_io, vha, 0x3009, | |
5173 | "qla_target(%d): %s: Allocation of cmd failed\n", | |
5174 | vha->vp_idx, __func__); | |
5175 | ||
5176 | vha->hw->tgt.num_qfull_cmds_dropped++; | |
5177 | if (vha->hw->tgt.num_qfull_cmds_dropped > | |
5178 | vha->qla_stats.stat_max_qfull_cmds_dropped) | |
5179 | vha->qla_stats.stat_max_qfull_cmds_dropped = | |
5180 | vha->hw->tgt.num_qfull_cmds_dropped; | |
5181 | ||
5182 | qlt_chk_exch_leak_thresh_hold(vha); | |
5183 | return; | |
5184 | } | |
5185 | ||
5186 | memset(cmd, 0, sizeof(struct qla_tgt_cmd)); | |
5187 | ||
5188 | qlt_incr_num_pend_cmds(vha); | |
5189 | INIT_LIST_HEAD(&cmd->cmd_list); | |
5190 | memcpy(&cmd->atio, atio, sizeof(*atio)); | |
5191 | ||
5192 | cmd->tgt = vha->vha_tgt.qla_tgt; | |
5193 | cmd->vha = vha; | |
5194 | cmd->reset_count = ha->base_qpair->chip_reset; | |
5195 | cmd->q_full = 1; | |
5196 | cmd->qpair = ha->base_qpair; | |
5197 | ||
5198 | if (qfull) { | |
5199 | cmd->q_full = 1; | |
5200 | /* NOTE: borrowing the state field to carry the status */ | |
5201 | cmd->state = status; | |
5202 | } else | |
5203 | cmd->term_exchg = 1; | |
5204 | ||
5205 | spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); | |
5206 | list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list); | |
5207 | ||
5208 | vha->hw->tgt.num_qfull_cmds_alloc++; | |
5209 | if (vha->hw->tgt.num_qfull_cmds_alloc > | |
5210 | vha->qla_stats.stat_max_qfull_cmds_alloc) | |
5211 | vha->qla_stats.stat_max_qfull_cmds_alloc = | |
5212 | vha->hw->tgt.num_qfull_cmds_alloc; | |
5213 | spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); | |
5214 | } | |
5215 | ||
5216 | int | |
5217 | qlt_free_qfull_cmds(struct qla_qpair *qpair) | |
5218 | { | |
5219 | struct scsi_qla_host *vha = qpair->vha; | |
5220 | struct qla_hw_data *ha = vha->hw; | |
5221 | unsigned long flags; | |
5222 | struct qla_tgt_cmd *cmd, *tcmd; | |
5223 | struct list_head free_list, q_full_list; | |
5224 | int rc = 0; | |
5225 | ||
5226 | if (list_empty(&ha->tgt.q_full_list)) | |
5227 | return 0; | |
5228 | ||
5229 | INIT_LIST_HEAD(&free_list); | |
5230 | INIT_LIST_HEAD(&q_full_list); | |
5231 | ||
5232 | spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); | |
5233 | if (list_empty(&ha->tgt.q_full_list)) { | |
5234 | spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); | |
5235 | return 0; | |
5236 | } | |
5237 | ||
5238 | list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list); | |
5239 | spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); | |
5240 | ||
5241 | spin_lock_irqsave(qpair->qp_lock_ptr, flags); | |
5242 | list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) { | |
5243 | if (cmd->q_full) | |
5244 | /* cmd->state is a borrowed field to hold status */ | |
5245 | rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state); | |
5246 | else if (cmd->term_exchg) | |
5247 | rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio); | |
5248 | ||
5249 | if (rc == -ENOMEM) | |
5250 | break; | |
5251 | ||
5252 | if (cmd->q_full) | |
5253 | ql_dbg(ql_dbg_io, vha, 0x3006, | |
5254 | "%s: busy sent for ox_id[%04x]\n", __func__, | |
5255 | be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); | |
5256 | else if (cmd->term_exchg) | |
5257 | ql_dbg(ql_dbg_io, vha, 0x3007, | |
5258 | "%s: Term exchg sent for ox_id[%04x]\n", __func__, | |
5259 | be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); | |
5260 | else | |
5261 | ql_dbg(ql_dbg_io, vha, 0x3008, | |
5262 | "%s: Unexpected cmd in QFull list %p\n", __func__, | |
5263 | cmd); | |
5264 | ||
5265 | list_del(&cmd->cmd_list); | |
5266 | list_add_tail(&cmd->cmd_list, &free_list); | |
5267 | ||
5268 | /* piggy back on hardware_lock for protection */ | |
5269 | vha->hw->tgt.num_qfull_cmds_alloc--; | |
5270 | } | |
5271 | spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); | |
5272 | ||
5273 | cmd = NULL; | |
5274 | ||
5275 | list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { | |
5276 | list_del(&cmd->cmd_list); | |
5277 | /* This cmd was never sent to TCM. There is no need | |
5278 | * to schedule free or call free_cmd | |
5279 | */ | |
5280 | qlt_free_cmd(cmd); | |
5281 | } | |
5282 | ||
5283 | if (!list_empty(&q_full_list)) { | |
5284 | spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); | |
5285 | list_splice(&q_full_list, &vha->hw->tgt.q_full_list); | |
5286 | spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); | |
5287 | } | |
5288 | ||
5289 | return rc; | |
5290 | } | |
5291 | ||
5292 | static void | |
5293 | qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio, | |
5294 | uint16_t status) | |
5295 | { | |
5296 | int rc = 0; | |
5297 | struct scsi_qla_host *vha = qpair->vha; | |
5298 | ||
5299 | rc = __qlt_send_busy(qpair, atio, status); | |
5300 | if (rc == -ENOMEM) | |
5301 | qlt_alloc_qfull_cmd(vha, atio, status, 1); | |
5302 | } | |
5303 | ||
5304 | static int | |
5305 | qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair, | |
5306 | struct atio_from_isp *atio, uint8_t ha_locked) | |
5307 | { | |
5308 | struct qla_hw_data *ha = vha->hw; | |
5309 | uint16_t status; | |
5310 | unsigned long flags; | |
5311 | ||
5312 | if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha)) | |
5313 | return 0; | |
5314 | ||
5315 | if (!ha_locked) | |
5316 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
5317 | status = temp_sam_status; | |
5318 | qlt_send_busy(qpair, atio, status); | |
5319 | if (!ha_locked) | |
5320 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
5321 | ||
5322 | return 1; | |
5323 | } | |
5324 | ||
5325 | /* ha->hardware_lock supposed to be held on entry */ | |
5326 | /* called via callback from qla2xxx */ | |
5327 | static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, | |
5328 | struct atio_from_isp *atio, uint8_t ha_locked) | |
5329 | { | |
5330 | struct qla_hw_data *ha = vha->hw; | |
5331 | struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; | |
5332 | int rc; | |
5333 | unsigned long flags; | |
5334 | ||
5335 | if (unlikely(tgt == NULL)) { | |
5336 | ql_dbg(ql_dbg_tgt, vha, 0x3064, | |
5337 | "ATIO pkt, but no tgt (ha %p)", ha); | |
5338 | return; | |
5339 | } | |
5340 | /* | |
5341 | * In tgt_stop mode we also should allow all requests to pass. | |
5342 | * Otherwise, some commands can stuck. | |
5343 | */ | |
5344 | ||
5345 | tgt->atio_irq_cmd_count++; | |
5346 | ||
5347 | switch (atio->u.raw.entry_type) { | |
5348 | case ATIO_TYPE7: | |
5349 | if (unlikely(atio->u.isp24.exchange_addr == | |
5350 | ATIO_EXCHANGE_ADDRESS_UNKNOWN)) { | |
5351 | ql_dbg(ql_dbg_io, vha, 0x3065, | |
5352 | "qla_target(%d): ATIO_TYPE7 " | |
5353 | "received with UNKNOWN exchange address, " | |
5354 | "sending QUEUE_FULL\n", vha->vp_idx); | |
5355 | if (!ha_locked) | |
5356 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
5357 | qlt_send_busy(ha->base_qpair, atio, | |
5358 | SAM_STAT_TASK_SET_FULL); | |
5359 | if (!ha_locked) | |
5360 | spin_unlock_irqrestore(&ha->hardware_lock, | |
5361 | flags); | |
5362 | break; | |
5363 | } | |
5364 | ||
5365 | if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) { | |
5366 | rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair, | |
5367 | atio, ha_locked); | |
5368 | if (rc != 0) { | |
5369 | tgt->atio_irq_cmd_count--; | |
5370 | return; | |
5371 | } | |
5372 | rc = qlt_handle_cmd_for_atio(vha, atio); | |
5373 | } else { | |
5374 | rc = qlt_handle_task_mgmt(vha, atio); | |
5375 | } | |
5376 | if (unlikely(rc != 0)) { | |
5377 | if (rc == -ESRCH) { | |
5378 | if (!ha_locked) | |
5379 | spin_lock_irqsave(&ha->hardware_lock, | |
5380 | flags); | |
5381 | ||
5382 | #if 1 /* With TERM EXCHANGE some FC cards refuse to boot */ | |
5383 | qlt_send_busy(ha->base_qpair, atio, | |
5384 | SAM_STAT_BUSY); | |
5385 | #else | |
5386 | qlt_send_term_exchange(ha->base_qpair, NULL, | |
5387 | atio, 1, 0); | |
5388 | #endif | |
5389 | if (!ha_locked) | |
5390 | spin_unlock_irqrestore( | |
5391 | &ha->hardware_lock, flags); | |
5392 | } else { | |
5393 | if (tgt->tgt_stop) { | |
5394 | ql_dbg(ql_dbg_tgt, vha, 0xe059, | |
5395 | "qla_target: Unable to send " | |
5396 | "command to target for req, " | |
5397 | "ignoring.\n"); | |
5398 | } else { | |
5399 | ql_dbg(ql_dbg_tgt, vha, 0xe05a, | |
5400 | "qla_target(%d): Unable to send " | |
5401 | "command to target, sending BUSY " | |
5402 | "status.\n", vha->vp_idx); | |
5403 | if (!ha_locked) | |
5404 | spin_lock_irqsave( | |
5405 | &ha->hardware_lock, flags); | |
5406 | qlt_send_busy(ha->base_qpair, | |
5407 | atio, SAM_STAT_BUSY); | |
5408 | if (!ha_locked) | |
5409 | spin_unlock_irqrestore( | |
5410 | &ha->hardware_lock, flags); | |
5411 | } | |
5412 | } | |
5413 | } | |
5414 | break; | |
5415 | ||
5416 | case IMMED_NOTIFY_TYPE: | |
5417 | { | |
5418 | if (unlikely(atio->u.isp2x.entry_status != 0)) { | |
5419 | ql_dbg(ql_dbg_tgt, vha, 0xe05b, | |
5420 | "qla_target(%d): Received ATIO packet %x " | |
5421 | "with error status %x\n", vha->vp_idx, | |
5422 | atio->u.raw.entry_type, | |
5423 | atio->u.isp2x.entry_status); | |
5424 | break; | |
5425 | } | |
5426 | ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); | |
5427 | ||
5428 | if (!ha_locked) | |
5429 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
5430 | qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); | |
5431 | if (!ha_locked) | |
5432 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
5433 | break; | |
5434 | } | |
5435 | ||
5436 | default: | |
5437 | ql_dbg(ql_dbg_tgt, vha, 0xe05c, | |
5438 | "qla_target(%d): Received unknown ATIO atio " | |
5439 | "type %x\n", vha->vp_idx, atio->u.raw.entry_type); | |
5440 | break; | |
5441 | } | |
5442 | ||
5443 | tgt->atio_irq_cmd_count--; | |
5444 | } | |
5445 | ||
5446 | /* ha->hardware_lock supposed to be held on entry */ | |
5447 | /* called via callback from qla2xxx */ | |
5448 | static void qlt_response_pkt(struct scsi_qla_host *vha, | |
5449 | struct rsp_que *rsp, response_t *pkt) | |
5450 | { | |
5451 | struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; | |
5452 | ||
5453 | if (unlikely(tgt == NULL)) { | |
5454 | ql_dbg(ql_dbg_tgt, vha, 0xe05d, | |
5455 | "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n", | |
5456 | vha->vp_idx, pkt->entry_type, vha->hw); | |
5457 | return; | |
5458 | } | |
5459 | ||
5460 | /* | |
5461 | * In tgt_stop mode we also should allow all requests to pass. | |
5462 | * Otherwise, some commands can stuck. | |
5463 | */ | |
5464 | ||
5465 | switch (pkt->entry_type) { | |
5466 | case CTIO_CRC2: | |
5467 | case CTIO_TYPE7: | |
5468 | { | |
5469 | struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; | |
5470 | qlt_do_ctio_completion(vha, rsp, entry->handle, | |
5471 | le16_to_cpu(entry->status)|(pkt->entry_status << 16), | |
5472 | entry); | |
5473 | break; | |
5474 | } | |
5475 | ||
5476 | case ACCEPT_TGT_IO_TYPE: | |
5477 | { | |
5478 | struct atio_from_isp *atio = (struct atio_from_isp *)pkt; | |
5479 | int rc; | |
5480 | if (atio->u.isp2x.status != | |
5481 | cpu_to_le16(ATIO_CDB_VALID)) { | |
5482 | ql_dbg(ql_dbg_tgt, vha, 0xe05e, | |
5483 | "qla_target(%d): ATIO with error " | |
5484 | "status %x received\n", vha->vp_idx, | |
5485 | le16_to_cpu(atio->u.isp2x.status)); | |
5486 | break; | |
5487 | } | |
5488 | ||
5489 | rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1); | |
5490 | if (rc != 0) | |
5491 | return; | |
5492 | ||
5493 | rc = qlt_handle_cmd_for_atio(vha, atio); | |
5494 | if (unlikely(rc != 0)) { | |
5495 | if (rc == -ESRCH) { | |
5496 | #if 1 /* With TERM EXCHANGE some FC cards refuse to boot */ | |
5497 | qlt_send_busy(rsp->qpair, atio, 0); | |
5498 | #else | |
5499 | qlt_send_term_exchange(rsp->qpair, NULL, atio, 1, 0); | |
5500 | #endif | |
5501 | } else { | |
5502 | if (tgt->tgt_stop) { | |
5503 | ql_dbg(ql_dbg_tgt, vha, 0xe05f, | |
5504 | "qla_target: Unable to send " | |
5505 | "command to target, sending TERM " | |
5506 | "EXCHANGE for rsp\n"); | |
5507 | qlt_send_term_exchange(rsp->qpair, NULL, | |
5508 | atio, 1, 0); | |
5509 | } else { | |
5510 | ql_dbg(ql_dbg_tgt, vha, 0xe060, | |
5511 | "qla_target(%d): Unable to send " | |
5512 | "command to target, sending BUSY " | |
5513 | "status\n", vha->vp_idx); | |
5514 | qlt_send_busy(rsp->qpair, atio, 0); | |
5515 | } | |
5516 | } | |
5517 | } | |
5518 | } | |
5519 | break; | |
5520 | ||
5521 | case CONTINUE_TGT_IO_TYPE: | |
5522 | { | |
5523 | struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; | |
5524 | qlt_do_ctio_completion(vha, rsp, entry->handle, | |
5525 | le16_to_cpu(entry->status)|(pkt->entry_status << 16), | |
5526 | entry); | |
5527 | break; | |
5528 | } | |
5529 | ||
5530 | case CTIO_A64_TYPE: | |
5531 | { | |
5532 | struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; | |
5533 | qlt_do_ctio_completion(vha, rsp, entry->handle, | |
5534 | le16_to_cpu(entry->status)|(pkt->entry_status << 16), | |
5535 | entry); | |
5536 | break; | |
5537 | } | |
5538 | ||
5539 | case IMMED_NOTIFY_TYPE: | |
5540 | ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); | |
5541 | qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); | |
5542 | break; | |
5543 | ||
5544 | case NOTIFY_ACK_TYPE: | |
5545 | if (tgt->notify_ack_expected > 0) { | |
5546 | struct nack_to_isp *entry = (struct nack_to_isp *)pkt; | |
5547 | ql_dbg(ql_dbg_tgt, vha, 0xe036, | |
5548 | "NOTIFY_ACK seq %08x status %x\n", | |
5549 | le16_to_cpu(entry->u.isp2x.seq_id), | |
5550 | le16_to_cpu(entry->u.isp2x.status)); | |
5551 | tgt->notify_ack_expected--; | |
5552 | if (entry->u.isp2x.status != | |
5553 | cpu_to_le16(NOTIFY_ACK_SUCCESS)) { | |
5554 | ql_dbg(ql_dbg_tgt, vha, 0xe061, | |
5555 | "qla_target(%d): NOTIFY_ACK " | |
5556 | "failed %x\n", vha->vp_idx, | |
5557 | le16_to_cpu(entry->u.isp2x.status)); | |
5558 | } | |
5559 | } else { | |
5560 | ql_dbg(ql_dbg_tgt, vha, 0xe062, | |
5561 | "qla_target(%d): Unexpected NOTIFY_ACK received\n", | |
5562 | vha->vp_idx); | |
5563 | } | |
5564 | break; | |
5565 | ||
5566 | case ABTS_RECV_24XX: | |
5567 | ql_dbg(ql_dbg_tgt, vha, 0xe037, | |
5568 | "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); | |
5569 | qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); | |
5570 | break; | |
5571 | ||
5572 | case ABTS_RESP_24XX: | |
5573 | if (tgt->abts_resp_expected > 0) { | |
5574 | struct abts_resp_from_24xx_fw *entry = | |
5575 | (struct abts_resp_from_24xx_fw *)pkt; | |
5576 | ql_dbg(ql_dbg_tgt, vha, 0xe038, | |
5577 | "ABTS_RESP_24XX: compl_status %x\n", | |
5578 | entry->compl_status); | |
5579 | tgt->abts_resp_expected--; | |
5580 | if (le16_to_cpu(entry->compl_status) != | |
5581 | ABTS_RESP_COMPL_SUCCESS) { | |
5582 | if ((entry->error_subcode1 == 0x1E) && | |
5583 | (entry->error_subcode2 == 0)) { | |
5584 | /* | |
5585 | * We've got a race here: aborted | |
5586 | * exchange not terminated, i.e. | |
5587 | * response for the aborted command was | |
5588 | * sent between the abort request was | |
5589 | * received and processed. | |
5590 | * Unfortunately, the firmware has a | |
5591 | * silly requirement that all aborted | |
5592 | * exchanges must be explicitely | |
5593 | * terminated, otherwise it refuses to | |
5594 | * send responses for the abort | |
5595 | * requests. So, we have to | |
5596 | * (re)terminate the exchange and retry | |
5597 | * the abort response. | |
5598 | */ | |
5599 | qlt_24xx_retry_term_exchange(vha, | |
5600 | entry); | |
5601 | } else | |
5602 | ql_dbg(ql_dbg_tgt, vha, 0xe063, | |
5603 | "qla_target(%d): ABTS_RESP_24XX " | |
5604 | "failed %x (subcode %x:%x)", | |
5605 | vha->vp_idx, entry->compl_status, | |
5606 | entry->error_subcode1, | |
5607 | entry->error_subcode2); | |
5608 | } | |
5609 | } else { | |
5610 | ql_dbg(ql_dbg_tgt, vha, 0xe064, | |
5611 | "qla_target(%d): Unexpected ABTS_RESP_24XX " | |
5612 | "received\n", vha->vp_idx); | |
5613 | } | |
5614 | break; | |
5615 | ||
5616 | default: | |
5617 | ql_dbg(ql_dbg_tgt, vha, 0xe065, | |
5618 | "qla_target(%d): Received unknown response pkt " | |
5619 | "type %x\n", vha->vp_idx, pkt->entry_type); | |
5620 | break; | |
5621 | } | |
5622 | ||
5623 | } | |
5624 | ||
5625 | /* | |
5626 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire | |
5627 | */ | |
5628 | void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, | |
5629 | uint16_t *mailbox) | |
5630 | { | |
5631 | struct qla_hw_data *ha = vha->hw; | |
5632 | struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; | |
5633 | int login_code; | |
5634 | ||
5635 | if (!tgt || tgt->tgt_stop || tgt->tgt_stopped) | |
5636 | return; | |
5637 | ||
5638 | if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && | |
5639 | IS_QLA2100(ha)) | |
5640 | return; | |
5641 | /* | |
5642 | * In tgt_stop mode we also should allow all requests to pass. | |
5643 | * Otherwise, some commands can stuck. | |
5644 | */ | |
5645 | ||
5646 | ||
5647 | switch (code) { | |
5648 | case MBA_RESET: /* Reset */ | |
5649 | case MBA_SYSTEM_ERR: /* System Error */ | |
5650 | case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ | |
5651 | case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ | |
5652 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, | |
5653 | "qla_target(%d): System error async event %#x " | |
5654 | "occurred", vha->vp_idx, code); | |
5655 | break; | |
5656 | case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ | |
5657 | set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); | |
5658 | break; | |
5659 | ||
5660 | case MBA_LOOP_UP: | |
5661 | { | |
5662 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, | |
5663 | "qla_target(%d): Async LOOP_UP occurred " | |
5664 | "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, | |
5665 | le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), | |
5666 | le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); | |
5667 | if (tgt->link_reinit_iocb_pending) { | |
5668 | qlt_send_notify_ack(ha->base_qpair, | |
5669 | (void *)&tgt->link_reinit_iocb, | |
5670 | 0, 0, 0, 0, 0, 0); | |
5671 | tgt->link_reinit_iocb_pending = 0; | |
5672 | } | |
5673 | break; | |
5674 | } | |
5675 | ||
5676 | case MBA_LIP_OCCURRED: | |
5677 | case MBA_LOOP_DOWN: | |
5678 | case MBA_LIP_RESET: | |
5679 | case MBA_RSCN_UPDATE: | |
5680 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, | |
5681 | "qla_target(%d): Async event %#x occurred " | |
5682 | "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, | |
5683 | le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), | |
5684 | le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); | |
5685 | break; | |
5686 | ||
5687 | case MBA_REJECTED_FCP_CMD: | |
5688 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017, | |
5689 | "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", | |
5690 | vha->vp_idx, | |
5691 | le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), | |
5692 | le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); | |
5693 | ||
5694 | if (le16_to_cpu(mailbox[3]) == 1) { | |
5695 | /* exchange starvation. */ | |
5696 | vha->hw->exch_starvation++; | |
5697 | if (vha->hw->exch_starvation > 5) { | |
5698 | ql_log(ql_log_warn, vha, 0xd03a, | |
5699 | "Exchange starvation-. Resetting RISC\n"); | |
5700 | ||
5701 | vha->hw->exch_starvation = 0; | |
5702 | if (IS_P3P_TYPE(vha->hw)) | |
5703 | set_bit(FCOE_CTX_RESET_NEEDED, | |
5704 | &vha->dpc_flags); | |
5705 | else | |
5706 | set_bit(ISP_ABORT_NEEDED, | |
5707 | &vha->dpc_flags); | |
5708 | qla2xxx_wake_dpc(vha); | |
5709 | } | |
5710 | } | |
5711 | break; | |
5712 | ||
5713 | case MBA_PORT_UPDATE: | |
5714 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d, | |
5715 | "qla_target(%d): Port update async event %#x " | |
5716 | "occurred: updating the ports database (m[0]=%x, m[1]=%x, " | |
5717 | "m[2]=%x, m[3]=%x)", vha->vp_idx, code, | |
5718 | le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), | |
5719 | le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); | |
5720 | ||
5721 | login_code = le16_to_cpu(mailbox[2]); | |
5722 | if (login_code == 0x4) { | |
5723 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, | |
5724 | "Async MB 2: Got PLOGI Complete\n"); | |
5725 | vha->hw->exch_starvation = 0; | |
5726 | } else if (login_code == 0x7) | |
5727 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f, | |
5728 | "Async MB 2: Port Logged Out\n"); | |
5729 | break; | |
5730 | default: | |
5731 | break; | |
5732 | } | |
5733 | ||
5734 | } | |
5735 | ||
5736 | static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, | |
5737 | uint16_t loop_id) | |
5738 | { | |
5739 | fc_port_t *fcport, *tfcp, *del; | |
5740 | int rc; | |
5741 | unsigned long flags; | |
5742 | u8 newfcport = 0; | |
5743 | ||
5744 | fcport = kzalloc(sizeof(*fcport), GFP_KERNEL); | |
5745 | if (!fcport) { | |
5746 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, | |
5747 | "qla_target(%d): Allocation of tmp FC port failed", | |
5748 | vha->vp_idx); | |
5749 | return NULL; | |
5750 | } | |
5751 | ||
5752 | fcport->loop_id = loop_id; | |
5753 | ||
5754 | rc = qla24xx_gpdb_wait(vha, fcport, 0); | |
5755 | if (rc != QLA_SUCCESS) { | |
5756 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, | |
5757 | "qla_target(%d): Failed to retrieve fcport " | |
5758 | "information -- get_port_database() returned %x " | |
5759 | "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); | |
5760 | kfree(fcport); | |
5761 | return NULL; | |
5762 | } | |
5763 | ||
5764 | del = NULL; | |
5765 | spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); | |
5766 | tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1); | |
5767 | ||
5768 | if (tfcp) { | |
5769 | tfcp->d_id = fcport->d_id; | |
5770 | tfcp->port_type = fcport->port_type; | |
5771 | tfcp->supported_classes = fcport->supported_classes; | |
5772 | tfcp->flags |= fcport->flags; | |
5773 | ||
5774 | del = fcport; | |
5775 | fcport = tfcp; | |
5776 | } else { | |
5777 | if (vha->hw->current_topology == ISP_CFG_F) | |
5778 | fcport->flags |= FCF_FABRIC_DEVICE; | |
5779 | ||
5780 | list_add_tail(&fcport->list, &vha->vp_fcports); | |
5781 | if (!IS_SW_RESV_ADDR(fcport->d_id)) | |
5782 | vha->fcport_count++; | |
5783 | fcport->login_gen++; | |
5784 | fcport->disc_state = DSC_LOGIN_COMPLETE; | |
5785 | fcport->login_succ = 1; | |
5786 | newfcport = 1; | |
5787 | } | |
5788 | ||
5789 | fcport->deleted = 0; | |
5790 | spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); | |
5791 | ||
5792 | switch (vha->host->active_mode) { | |
5793 | case MODE_INITIATOR: | |
5794 | case MODE_DUAL: | |
5795 | if (newfcport) { | |
5796 | if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) { | |
5797 | ql_dbg(ql_dbg_disc, vha, 0x20fe, | |
5798 | "%s %d %8phC post upd_fcport fcp_cnt %d\n", | |
5799 | __func__, __LINE__, fcport->port_name, vha->fcport_count); | |
5800 | qla24xx_post_upd_fcport_work(vha, fcport); | |
5801 | } else { | |
5802 | ql_dbg(ql_dbg_disc, vha, 0x20ff, | |
5803 | "%s %d %8phC post gpsc fcp_cnt %d\n", | |
5804 | __func__, __LINE__, fcport->port_name, vha->fcport_count); | |
5805 | qla24xx_post_gpsc_work(vha, fcport); | |
5806 | } | |
5807 | } | |
5808 | break; | |
5809 | ||
5810 | case MODE_TARGET: | |
5811 | default: | |
5812 | break; | |
5813 | } | |
5814 | if (del) | |
5815 | qla2x00_free_fcport(del); | |
5816 | ||
5817 | return fcport; | |
5818 | } | |
5819 | ||
5820 | /* Must be called under tgt_mutex */ | |
5821 | static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha, | |
5822 | uint8_t *s_id) | |
5823 | { | |
5824 | struct fc_port *sess = NULL; | |
5825 | fc_port_t *fcport = NULL; | |
5826 | int rc, global_resets; | |
5827 | uint16_t loop_id = 0; | |
5828 | ||
5829 | if ((s_id[0] == 0xFF) && (s_id[1] == 0xFC)) { | |
5830 | /* | |
5831 | * This is Domain Controller, so it should be | |
5832 | * OK to drop SCSI commands from it. | |
5833 | */ | |
5834 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, | |
5835 | "Unable to find initiator with S_ID %x:%x:%x", | |
5836 | s_id[0], s_id[1], s_id[2]); | |
5837 | return NULL; | |
5838 | } | |
5839 | ||
5840 | mutex_lock(&vha->vha_tgt.tgt_mutex); | |
5841 | ||
5842 | retry: | |
5843 | global_resets = | |
5844 | atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); | |
5845 | ||
5846 | rc = qla24xx_get_loop_id(vha, s_id, &loop_id); | |
5847 | if (rc != 0) { | |
5848 | mutex_unlock(&vha->vha_tgt.tgt_mutex); | |
5849 | ||
5850 | ql_log(ql_log_info, vha, 0xf071, | |
5851 | "qla_target(%d): Unable to find " | |
5852 | "initiator with S_ID %x:%x:%x", | |
5853 | vha->vp_idx, s_id[0], s_id[1], | |
5854 | s_id[2]); | |
5855 | ||
5856 | if (rc == -ENOENT) { | |
5857 | qlt_port_logo_t logo; | |
5858 | sid_to_portid(s_id, &logo.id); | |
5859 | logo.cmd_count = 1; | |
5860 | qlt_send_first_logo(vha, &logo); | |
5861 | } | |
5862 | ||
5863 | return NULL; | |
5864 | } | |
5865 | ||
5866 | fcport = qlt_get_port_database(vha, loop_id); | |
5867 | if (!fcport) { | |
5868 | mutex_unlock(&vha->vha_tgt.tgt_mutex); | |
5869 | return NULL; | |
5870 | } | |
5871 | ||
5872 | if (global_resets != | |
5873 | atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) { | |
5874 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, | |
5875 | "qla_target(%d): global reset during session discovery " | |
5876 | "(counter was %d, new %d), retrying", vha->vp_idx, | |
5877 | global_resets, | |
5878 | atomic_read(&vha->vha_tgt. | |
5879 | qla_tgt->tgt_global_resets_count)); | |
5880 | goto retry; | |
5881 | } | |
5882 | ||
5883 | sess = qlt_create_sess(vha, fcport, true); | |
5884 | ||
5885 | mutex_unlock(&vha->vha_tgt.tgt_mutex); | |
5886 | ||
5887 | return sess; | |
5888 | } | |
5889 | ||
5890 | static void qlt_abort_work(struct qla_tgt *tgt, | |
5891 | struct qla_tgt_sess_work_param *prm) | |
5892 | { | |
5893 | struct scsi_qla_host *vha = tgt->vha; | |
5894 | struct qla_hw_data *ha = vha->hw; | |
5895 | struct fc_port *sess = NULL; | |
5896 | unsigned long flags = 0, flags2 = 0; | |
5897 | uint32_t be_s_id; | |
5898 | uint8_t s_id[3]; | |
5899 | int rc; | |
5900 | ||
5901 | spin_lock_irqsave(&ha->tgt.sess_lock, flags2); | |
5902 | ||
5903 | if (tgt->tgt_stop) | |
5904 | goto out_term2; | |
5905 | ||
5906 | s_id[0] = prm->abts.fcp_hdr_le.s_id[2]; | |
5907 | s_id[1] = prm->abts.fcp_hdr_le.s_id[1]; | |
5908 | s_id[2] = prm->abts.fcp_hdr_le.s_id[0]; | |
5909 | ||
5910 | sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, | |
5911 | (unsigned char *)&be_s_id); | |
5912 | if (!sess) { | |
5913 | spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); | |
5914 | ||
5915 | sess = qlt_make_local_sess(vha, s_id); | |
5916 | /* sess has got an extra creation ref */ | |
5917 | ||
5918 | spin_lock_irqsave(&ha->tgt.sess_lock, flags2); | |
5919 | if (!sess) | |
5920 | goto out_term2; | |
5921 | } else { | |
5922 | if (sess->deleted) { | |
5923 | sess = NULL; | |
5924 | goto out_term2; | |
5925 | } | |
5926 | ||
5927 | if (!kref_get_unless_zero(&sess->sess_kref)) { | |
5928 | ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c, | |
5929 | "%s: kref_get fail %8phC \n", | |
5930 | __func__, sess->port_name); | |
5931 | sess = NULL; | |
5932 | goto out_term2; | |
5933 | } | |
5934 | } | |
5935 | ||
5936 | rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); | |
5937 | ha->tgt.tgt_ops->put_sess(sess); | |
5938 | spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); | |
5939 | ||
5940 | if (rc != 0) | |
5941 | goto out_term; | |
5942 | return; | |
5943 | ||
5944 | out_term2: | |
5945 | if (sess) | |
5946 | ha->tgt.tgt_ops->put_sess(sess); | |
5947 | spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); | |
5948 | ||
5949 | out_term: | |
5950 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
5951 | qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts, | |
5952 | FCP_TMF_REJECTED, false); | |
5953 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
5954 | } | |
5955 | ||
5956 | static void qlt_tmr_work(struct qla_tgt *tgt, | |
5957 | struct qla_tgt_sess_work_param *prm) | |
5958 | { | |
5959 | struct atio_from_isp *a = &prm->tm_iocb2; | |
5960 | struct scsi_qla_host *vha = tgt->vha; | |
5961 | struct qla_hw_data *ha = vha->hw; | |
5962 | struct fc_port *sess = NULL; | |
5963 | unsigned long flags; | |
5964 | uint8_t *s_id = NULL; /* to hide compiler warnings */ | |
5965 | int rc; | |
5966 | u64 unpacked_lun; | |
5967 | int fn; | |
5968 | void *iocb; | |
5969 | ||
5970 | spin_lock_irqsave(&ha->tgt.sess_lock, flags); | |
5971 | ||
5972 | if (tgt->tgt_stop) | |
5973 | goto out_term2; | |
5974 | ||
5975 | s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id; | |
5976 | sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); | |
5977 | if (!sess) { | |
5978 | spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); | |
5979 | ||
5980 | sess = qlt_make_local_sess(vha, s_id); | |
5981 | /* sess has got an extra creation ref */ | |
5982 | ||
5983 | spin_lock_irqsave(&ha->tgt.sess_lock, flags); | |
5984 | if (!sess) | |
5985 | goto out_term2; | |
5986 | } else { | |
5987 | if (sess->deleted) { | |
5988 | sess = NULL; | |
5989 | goto out_term2; | |
5990 | } | |
5991 | ||
5992 | if (!kref_get_unless_zero(&sess->sess_kref)) { | |
5993 | ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020, | |
5994 | "%s: kref_get fail %8phC\n", | |
5995 | __func__, sess->port_name); | |
5996 | sess = NULL; | |
5997 | goto out_term2; | |
5998 | } | |
5999 | } | |
6000 | ||
6001 | iocb = a; | |
6002 | fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; | |
6003 | unpacked_lun = | |
6004 | scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); | |
6005 | ||
6006 | rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); | |
6007 | ha->tgt.tgt_ops->put_sess(sess); | |
6008 | spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); | |
6009 | ||
6010 | if (rc != 0) | |
6011 | goto out_term; | |
6012 | return; | |
6013 | ||
6014 | out_term2: | |
6015 | if (sess) | |
6016 | ha->tgt.tgt_ops->put_sess(sess); | |
6017 | spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); | |
6018 | out_term: | |
6019 | qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0); | |
6020 | } | |
6021 | ||
6022 | static void qlt_sess_work_fn(struct work_struct *work) | |
6023 | { | |
6024 | struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); | |
6025 | struct scsi_qla_host *vha = tgt->vha; | |
6026 | unsigned long flags; | |
6027 | ||
6028 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); | |
6029 | ||
6030 | spin_lock_irqsave(&tgt->sess_work_lock, flags); | |
6031 | while (!list_empty(&tgt->sess_works_list)) { | |
6032 | struct qla_tgt_sess_work_param *prm = list_entry( | |
6033 | tgt->sess_works_list.next, typeof(*prm), | |
6034 | sess_works_list_entry); | |
6035 | ||
6036 | /* | |
6037 | * This work can be scheduled on several CPUs at time, so we | |
6038 | * must delete the entry to eliminate double processing | |
6039 | */ | |
6040 | list_del(&prm->sess_works_list_entry); | |
6041 | ||
6042 | spin_unlock_irqrestore(&tgt->sess_work_lock, flags); | |
6043 | ||
6044 | switch (prm->type) { | |
6045 | case QLA_TGT_SESS_WORK_ABORT: | |
6046 | qlt_abort_work(tgt, prm); | |
6047 | break; | |
6048 | case QLA_TGT_SESS_WORK_TM: | |
6049 | qlt_tmr_work(tgt, prm); | |
6050 | break; | |
6051 | default: | |
6052 | BUG_ON(1); | |
6053 | break; | |
6054 | } | |
6055 | ||
6056 | spin_lock_irqsave(&tgt->sess_work_lock, flags); | |
6057 | ||
6058 | kfree(prm); | |
6059 | } | |
6060 | spin_unlock_irqrestore(&tgt->sess_work_lock, flags); | |
6061 | } | |
6062 | ||
6063 | /* Must be called under tgt_host_action_mutex */ | |
6064 | int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) | |
6065 | { | |
6066 | struct qla_tgt *tgt; | |
6067 | int rc, i; | |
6068 | struct qla_qpair_hint *h; | |
6069 | ||
6070 | if (!QLA_TGT_MODE_ENABLED()) | |
6071 | return 0; | |
6072 | ||
6073 | if (!IS_TGT_MODE_CAPABLE(ha)) { | |
6074 | ql_log(ql_log_warn, base_vha, 0xe070, | |
6075 | "This adapter does not support target mode.\n"); | |
6076 | return 0; | |
6077 | } | |
6078 | ||
6079 | ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, | |
6080 | "Registering target for host %ld(%p).\n", base_vha->host_no, ha); | |
6081 | ||
6082 | BUG_ON(base_vha->vha_tgt.qla_tgt != NULL); | |
6083 | ||
6084 | tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); | |
6085 | if (!tgt) { | |
6086 | ql_dbg(ql_dbg_tgt, base_vha, 0xe066, | |
6087 | "Unable to allocate struct qla_tgt\n"); | |
6088 | return -ENOMEM; | |
6089 | } | |
6090 | ||
6091 | tgt->qphints = kzalloc((ha->max_qpairs + 1) * | |
6092 | sizeof(struct qla_qpair_hint), GFP_KERNEL); | |
6093 | if (!tgt->qphints) { | |
6094 | kfree(tgt); | |
6095 | ql_log(ql_log_warn, base_vha, 0x0197, | |
6096 | "Unable to allocate qpair hints.\n"); | |
6097 | return -ENOMEM; | |
6098 | } | |
6099 | ||
6100 | if (!(base_vha->host->hostt->supported_mode & MODE_TARGET)) | |
6101 | base_vha->host->hostt->supported_mode |= MODE_TARGET; | |
6102 | ||
6103 | rc = btree_init64(&tgt->lun_qpair_map); | |
6104 | if (rc) { | |
6105 | kfree(tgt->qphints); | |
6106 | kfree(tgt); | |
6107 | ql_log(ql_log_info, base_vha, 0x0198, | |
6108 | "Unable to initialize lun_qpair_map btree\n"); | |
6109 | return -EIO; | |
6110 | } | |
6111 | h = &tgt->qphints[0]; | |
6112 | h->qpair = ha->base_qpair; | |
6113 | INIT_LIST_HEAD(&h->hint_elem); | |
6114 | h->cpuid = ha->base_qpair->cpuid; | |
6115 | list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list); | |
6116 | ||
6117 | for (i = 0; i < ha->max_qpairs; i++) { | |
6118 | unsigned long flags; | |
6119 | ||
6120 | struct qla_qpair *qpair = ha->queue_pair_map[i]; | |
6121 | h = &tgt->qphints[i + 1]; | |
6122 | INIT_LIST_HEAD(&h->hint_elem); | |
6123 | if (qpair) { | |
6124 | h->qpair = qpair; | |
6125 | spin_lock_irqsave(qpair->qp_lock_ptr, flags); | |
6126 | list_add_tail(&h->hint_elem, &qpair->hints_list); | |
6127 | spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); | |
6128 | h->cpuid = qpair->cpuid; | |
6129 | } | |
6130 | } | |
6131 | ||
6132 | tgt->ha = ha; | |
6133 | tgt->vha = base_vha; | |
6134 | init_waitqueue_head(&tgt->waitQ); | |
6135 | INIT_LIST_HEAD(&tgt->del_sess_list); | |
6136 | spin_lock_init(&tgt->sess_work_lock); | |
6137 | INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); | |
6138 | INIT_LIST_HEAD(&tgt->sess_works_list); | |
6139 | atomic_set(&tgt->tgt_global_resets_count, 0); | |
6140 | ||
6141 | base_vha->vha_tgt.qla_tgt = tgt; | |
6142 | ||
6143 | ql_dbg(ql_dbg_tgt, base_vha, 0xe067, | |
6144 | "qla_target(%d): using 64 Bit PCI addressing", | |
6145 | base_vha->vp_idx); | |
6146 | /* 3 is reserved */ | |
6147 | tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); | |
6148 | ||
6149 | mutex_lock(&qla_tgt_mutex); | |
6150 | list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); | |
6151 | mutex_unlock(&qla_tgt_mutex); | |
6152 | ||
6153 | if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target) | |
6154 | ha->tgt.tgt_ops->add_target(base_vha); | |
6155 | ||
6156 | return 0; | |
6157 | } | |
6158 | ||
6159 | /* Must be called under tgt_host_action_mutex */ | |
6160 | int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) | |
6161 | { | |
6162 | if (!vha->vha_tgt.qla_tgt) | |
6163 | return 0; | |
6164 | ||
6165 | if (vha->fc_vport) { | |
6166 | qlt_release(vha->vha_tgt.qla_tgt); | |
6167 | return 0; | |
6168 | } | |
6169 | ||
6170 | /* free left over qfull cmds */ | |
6171 | qlt_init_term_exchange(vha); | |
6172 | ||
6173 | mutex_lock(&qla_tgt_mutex); | |
6174 | list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry); | |
6175 | mutex_unlock(&qla_tgt_mutex); | |
6176 | ||
6177 | ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", | |
6178 | vha->host_no, ha); | |
6179 | qlt_release(vha->vha_tgt.qla_tgt); | |
6180 | ||
6181 | return 0; | |
6182 | } | |
6183 | ||
6184 | void qlt_remove_target_resources(struct qla_hw_data *ha) | |
6185 | { | |
6186 | struct scsi_qla_host *node; | |
6187 | u32 key = 0; | |
6188 | ||
6189 | btree_for_each_safe32(&ha->tgt.host_map, key, node) | |
6190 | btree_remove32(&ha->tgt.host_map, key); | |
6191 | ||
6192 | btree_destroy32(&ha->tgt.host_map); | |
6193 | } | |
6194 | ||
6195 | static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, | |
6196 | unsigned char *b) | |
6197 | { | |
6198 | int i; | |
6199 | ||
6200 | pr_debug("qla2xxx HW vha->node_name: "); | |
6201 | for (i = 0; i < WWN_SIZE; i++) | |
6202 | pr_debug("%02x ", vha->node_name[i]); | |
6203 | pr_debug("\n"); | |
6204 | pr_debug("qla2xxx HW vha->port_name: "); | |
6205 | for (i = 0; i < WWN_SIZE; i++) | |
6206 | pr_debug("%02x ", vha->port_name[i]); | |
6207 | pr_debug("\n"); | |
6208 | ||
6209 | pr_debug("qla2xxx passed configfs WWPN: "); | |
6210 | put_unaligned_be64(wwpn, b); | |
6211 | for (i = 0; i < WWN_SIZE; i++) | |
6212 | pr_debug("%02x ", b[i]); | |
6213 | pr_debug("\n"); | |
6214 | } | |
6215 | ||
6216 | /** | |
6217 | * qla_tgt_lport_register - register lport with external module | |
6218 | * | |
6219 | * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops | |
6220 | * @wwpn: Passwd FC target WWPN | |
6221 | * @callback: lport initialization callback for tcm_qla2xxx code | |
6222 | * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data | |
6223 | */ | |
6224 | int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn, | |
6225 | u64 npiv_wwpn, u64 npiv_wwnn, | |
6226 | int (*callback)(struct scsi_qla_host *, void *, u64, u64)) | |
6227 | { | |
6228 | struct qla_tgt *tgt; | |
6229 | struct scsi_qla_host *vha; | |
6230 | struct qla_hw_data *ha; | |
6231 | struct Scsi_Host *host; | |
6232 | unsigned long flags; | |
6233 | int rc; | |
6234 | u8 b[WWN_SIZE]; | |
6235 | ||
6236 | mutex_lock(&qla_tgt_mutex); | |
6237 | list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { | |
6238 | vha = tgt->vha; | |
6239 | ha = vha->hw; | |
6240 | ||
6241 | host = vha->host; | |
6242 | if (!host) | |
6243 | continue; | |
6244 | ||
6245 | if (!(host->hostt->supported_mode & MODE_TARGET)) | |
6246 | continue; | |
6247 | ||
6248 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
6249 | if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) { | |
6250 | pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", | |
6251 | host->host_no); | |
6252 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
6253 | continue; | |
6254 | } | |
6255 | if (tgt->tgt_stop) { | |
6256 | pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n", | |
6257 | host->host_no); | |
6258 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
6259 | continue; | |
6260 | } | |
6261 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
6262 | ||
6263 | if (!scsi_host_get(host)) { | |
6264 | ql_dbg(ql_dbg_tgt, vha, 0xe068, | |
6265 | "Unable to scsi_host_get() for" | |
6266 | " qla2xxx scsi_host\n"); | |
6267 | continue; | |
6268 | } | |
6269 | qlt_lport_dump(vha, phys_wwpn, b); | |
6270 | ||
6271 | if (memcmp(vha->port_name, b, WWN_SIZE)) { | |
6272 | scsi_host_put(host); | |
6273 | continue; | |
6274 | } | |
6275 | rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn); | |
6276 | if (rc != 0) | |
6277 | scsi_host_put(host); | |
6278 | ||
6279 | mutex_unlock(&qla_tgt_mutex); | |
6280 | return rc; | |
6281 | } | |
6282 | mutex_unlock(&qla_tgt_mutex); | |
6283 | ||
6284 | return -ENODEV; | |
6285 | } | |
6286 | EXPORT_SYMBOL(qlt_lport_register); | |
6287 | ||
6288 | /** | |
6289 | * qla_tgt_lport_deregister - Degister lport | |
6290 | * | |
6291 | * @vha: Registered scsi_qla_host pointer | |
6292 | */ | |
6293 | void qlt_lport_deregister(struct scsi_qla_host *vha) | |
6294 | { | |
6295 | struct qla_hw_data *ha = vha->hw; | |
6296 | struct Scsi_Host *sh = vha->host; | |
6297 | /* | |
6298 | * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data | |
6299 | */ | |
6300 | vha->vha_tgt.target_lport_ptr = NULL; | |
6301 | ha->tgt.tgt_ops = NULL; | |
6302 | /* | |
6303 | * Release the Scsi_Host reference for the underlying qla2xxx host | |
6304 | */ | |
6305 | scsi_host_put(sh); | |
6306 | } | |
6307 | EXPORT_SYMBOL(qlt_lport_deregister); | |
6308 | ||
6309 | /* Must be called under HW lock */ | |
6310 | static void qlt_set_mode(struct scsi_qla_host *vha) | |
6311 | { | |
6312 | switch (ql2x_ini_mode) { | |
6313 | case QLA2XXX_INI_MODE_DISABLED: | |
6314 | case QLA2XXX_INI_MODE_EXCLUSIVE: | |
6315 | vha->host->active_mode = MODE_TARGET; | |
6316 | break; | |
6317 | case QLA2XXX_INI_MODE_ENABLED: | |
6318 | vha->host->active_mode = MODE_UNKNOWN; | |
6319 | break; | |
6320 | case QLA2XXX_INI_MODE_DUAL: | |
6321 | vha->host->active_mode = MODE_DUAL; | |
6322 | break; | |
6323 | default: | |
6324 | break; | |
6325 | } | |
6326 | } | |
6327 | ||
6328 | /* Must be called under HW lock */ | |
6329 | static void qlt_clear_mode(struct scsi_qla_host *vha) | |
6330 | { | |
6331 | switch (ql2x_ini_mode) { | |
6332 | case QLA2XXX_INI_MODE_DISABLED: | |
6333 | vha->host->active_mode = MODE_UNKNOWN; | |
6334 | break; | |
6335 | case QLA2XXX_INI_MODE_EXCLUSIVE: | |
6336 | vha->host->active_mode = MODE_INITIATOR; | |
6337 | break; | |
6338 | case QLA2XXX_INI_MODE_ENABLED: | |
6339 | case QLA2XXX_INI_MODE_DUAL: | |
6340 | vha->host->active_mode = MODE_INITIATOR; | |
6341 | break; | |
6342 | default: | |
6343 | break; | |
6344 | } | |
6345 | } | |
6346 | ||
6347 | /* | |
6348 | * qla_tgt_enable_vha - NO LOCK HELD | |
6349 | * | |
6350 | * host_reset, bring up w/ Target Mode Enabled | |
6351 | */ | |
6352 | void | |
6353 | qlt_enable_vha(struct scsi_qla_host *vha) | |
6354 | { | |
6355 | struct qla_hw_data *ha = vha->hw; | |
6356 | struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; | |
6357 | unsigned long flags; | |
6358 | scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); | |
6359 | ||
6360 | if (!tgt) { | |
6361 | ql_dbg(ql_dbg_tgt, vha, 0xe069, | |
6362 | "Unable to locate qla_tgt pointer from" | |
6363 | " struct qla_hw_data\n"); | |
6364 | dump_stack(); | |
6365 | return; | |
6366 | } | |
6367 | ||
6368 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
6369 | tgt->tgt_stopped = 0; | |
6370 | qlt_set_mode(vha); | |
6371 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
6372 | ||
6373 | if (vha->vp_idx) { | |
6374 | qla24xx_disable_vp(vha); | |
6375 | qla24xx_enable_vp(vha); | |
6376 | } else { | |
6377 | set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags); | |
6378 | qla2xxx_wake_dpc(base_vha); | |
6379 | qla2x00_wait_for_hba_online(base_vha); | |
6380 | } | |
6381 | } | |
6382 | EXPORT_SYMBOL(qlt_enable_vha); | |
6383 | ||
6384 | /* | |
6385 | * qla_tgt_disable_vha - NO LOCK HELD | |
6386 | * | |
6387 | * Disable Target Mode and reset the adapter | |
6388 | */ | |
6389 | static void qlt_disable_vha(struct scsi_qla_host *vha) | |
6390 | { | |
6391 | struct qla_hw_data *ha = vha->hw; | |
6392 | struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; | |
6393 | unsigned long flags; | |
6394 | ||
6395 | if (!tgt) { | |
6396 | ql_dbg(ql_dbg_tgt, vha, 0xe06a, | |
6397 | "Unable to locate qla_tgt pointer from" | |
6398 | " struct qla_hw_data\n"); | |
6399 | dump_stack(); | |
6400 | return; | |
6401 | } | |
6402 | ||
6403 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
6404 | qlt_clear_mode(vha); | |
6405 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
6406 | ||
6407 | set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); | |
6408 | qla2xxx_wake_dpc(vha); | |
6409 | qla2x00_wait_for_hba_online(vha); | |
6410 | } | |
6411 | ||
6412 | /* | |
6413 | * Called from qla_init.c:qla24xx_vport_create() contex to setup | |
6414 | * the target mode specific struct scsi_qla_host and struct qla_hw_data | |
6415 | * members. | |
6416 | */ | |
6417 | void | |
6418 | qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) | |
6419 | { | |
6420 | vha->vha_tgt.qla_tgt = NULL; | |
6421 | ||
6422 | mutex_init(&vha->vha_tgt.tgt_mutex); | |
6423 | mutex_init(&vha->vha_tgt.tgt_host_action_mutex); | |
6424 | ||
6425 | qlt_clear_mode(vha); | |
6426 | ||
6427 | /* | |
6428 | * NOTE: Currently the value is kept the same for <24xx and | |
6429 | * >=24xx ISPs. If it is necessary to change it, | |
6430 | * the check should be added for specific ISPs, | |
6431 | * assigning the value appropriately. | |
6432 | */ | |
6433 | ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; | |
6434 | ||
6435 | qlt_add_target(ha, vha); | |
6436 | } | |
6437 | ||
6438 | void | |
6439 | qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req) | |
6440 | { | |
6441 | /* | |
6442 | * FC-4 Feature bit 0 indicates target functionality to the name server. | |
6443 | */ | |
6444 | if (qla_tgt_mode_enabled(vha)) { | |
6445 | ct_req->req.rff_id.fc4_feature = BIT_0; | |
6446 | } else if (qla_ini_mode_enabled(vha)) { | |
6447 | ct_req->req.rff_id.fc4_feature = BIT_1; | |
6448 | } else if (qla_dual_mode_enabled(vha)) | |
6449 | ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1; | |
6450 | } | |
6451 | ||
6452 | /* | |
6453 | * qlt_init_atio_q_entries() - Initializes ATIO queue entries. | |
6454 | * @ha: HA context | |
6455 | * | |
6456 | * Beginning of ATIO ring has initialization control block already built | |
6457 | * by nvram config routine. | |
6458 | * | |
6459 | * Returns 0 on success. | |
6460 | */ | |
6461 | void | |
6462 | qlt_init_atio_q_entries(struct scsi_qla_host *vha) | |
6463 | { | |
6464 | struct qla_hw_data *ha = vha->hw; | |
6465 | uint16_t cnt; | |
6466 | struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; | |
6467 | ||
6468 | if (qla_ini_mode_enabled(vha)) | |
6469 | return; | |
6470 | ||
6471 | for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { | |
6472 | pkt->u.raw.signature = ATIO_PROCESSED; | |
6473 | pkt++; | |
6474 | } | |
6475 | ||
6476 | } | |
6477 | ||
6478 | /* | |
6479 | * qlt_24xx_process_atio_queue() - Process ATIO queue entries. | |
6480 | * @ha: SCSI driver HA context | |
6481 | */ | |
6482 | void | |
6483 | qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked) | |
6484 | { | |
6485 | struct qla_hw_data *ha = vha->hw; | |
6486 | struct atio_from_isp *pkt; | |
6487 | int cnt, i; | |
6488 | ||
6489 | if (!ha->flags.fw_started) | |
6490 | return; | |
6491 | ||
6492 | while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) || | |
6493 | fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) { | |
6494 | pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; | |
6495 | cnt = pkt->u.raw.entry_count; | |
6496 | ||
6497 | if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) { | |
6498 | /* | |
6499 | * This packet is corrupted. The header + payload | |
6500 | * can not be trusted. There is no point in passing | |
6501 | * it further up. | |
6502 | */ | |
6503 | ql_log(ql_log_warn, vha, 0xd03c, | |
6504 | "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n", | |
6505 | pkt->u.isp24.fcp_hdr.s_id, | |
6506 | be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id), | |
6507 | le32_to_cpu(pkt->u.isp24.exchange_addr), pkt); | |
6508 | ||
6509 | adjust_corrupted_atio(pkt); | |
6510 | qlt_send_term_exchange(ha->base_qpair, NULL, pkt, | |
6511 | ha_locked, 0); | |
6512 | } else { | |
6513 | qlt_24xx_atio_pkt_all_vps(vha, | |
6514 | (struct atio_from_isp *)pkt, ha_locked); | |
6515 | } | |
6516 | ||
6517 | for (i = 0; i < cnt; i++) { | |
6518 | ha->tgt.atio_ring_index++; | |
6519 | if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { | |
6520 | ha->tgt.atio_ring_index = 0; | |
6521 | ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; | |
6522 | } else | |
6523 | ha->tgt.atio_ring_ptr++; | |
6524 | ||
6525 | pkt->u.raw.signature = ATIO_PROCESSED; | |
6526 | pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; | |
6527 | } | |
6528 | wmb(); | |
6529 | } | |
6530 | ||
6531 | /* Adjust ring index */ | |
6532 | WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index); | |
6533 | RD_REG_DWORD_RELAXED(ISP_ATIO_Q_OUT(vha)); | |
6534 | } | |
6535 | ||
6536 | void | |
6537 | qlt_24xx_config_rings(struct scsi_qla_host *vha) | |
6538 | { | |
6539 | struct qla_hw_data *ha = vha->hw; | |
6540 | if (!QLA_TGT_MODE_ENABLED()) | |
6541 | return; | |
6542 | ||
6543 | WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0); | |
6544 | WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0); | |
6545 | RD_REG_DWORD(ISP_ATIO_Q_OUT(vha)); | |
6546 | ||
6547 | if (IS_ATIO_MSIX_CAPABLE(ha)) { | |
6548 | struct qla_msix_entry *msix = &ha->msix_entries[2]; | |
6549 | struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb; | |
6550 | ||
6551 | icb->msix_atio = cpu_to_le16(msix->entry); | |
6552 | ql_dbg(ql_dbg_init, vha, 0xf072, | |
6553 | "Registering ICB vector 0x%x for atio que.\n", | |
6554 | msix->entry); | |
6555 | } | |
6556 | } | |
6557 | ||
6558 | void | |
6559 | qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) | |
6560 | { | |
6561 | struct qla_hw_data *ha = vha->hw; | |
6562 | ||
6563 | if (!QLA_TGT_MODE_ENABLED()) | |
6564 | return; | |
6565 | ||
6566 | if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { | |
6567 | if (!ha->tgt.saved_set) { | |
6568 | /* We save only once */ | |
6569 | ha->tgt.saved_exchange_count = nv->exchange_count; | |
6570 | ha->tgt.saved_firmware_options_1 = | |
6571 | nv->firmware_options_1; | |
6572 | ha->tgt.saved_firmware_options_2 = | |
6573 | nv->firmware_options_2; | |
6574 | ha->tgt.saved_firmware_options_3 = | |
6575 | nv->firmware_options_3; | |
6576 | ha->tgt.saved_set = 1; | |
6577 | } | |
6578 | ||
6579 | if (qla_tgt_mode_enabled(vha)) | |
6580 | nv->exchange_count = cpu_to_le16(0xFFFF); | |
6581 | else /* dual */ | |
6582 | nv->exchange_count = cpu_to_le16(ql2xexchoffld); | |
6583 | ||
6584 | /* Enable target mode */ | |
6585 | nv->firmware_options_1 |= cpu_to_le32(BIT_4); | |
6586 | ||
6587 | /* Disable ini mode, if requested */ | |
6588 | if (qla_tgt_mode_enabled(vha)) | |
6589 | nv->firmware_options_1 |= cpu_to_le32(BIT_5); | |
6590 | ||
6591 | /* Disable Full Login after LIP */ | |
6592 | nv->firmware_options_1 &= cpu_to_le32(~BIT_13); | |
6593 | /* Enable initial LIP */ | |
6594 | nv->firmware_options_1 &= cpu_to_le32(~BIT_9); | |
6595 | if (ql2xtgt_tape_enable) | |
6596 | /* Enable FC Tape support */ | |
6597 | nv->firmware_options_2 |= cpu_to_le32(BIT_12); | |
6598 | else | |
6599 | /* Disable FC Tape support */ | |
6600 | nv->firmware_options_2 &= cpu_to_le32(~BIT_12); | |
6601 | ||
6602 | /* Disable Full Login after LIP */ | |
6603 | nv->host_p &= cpu_to_le32(~BIT_10); | |
6604 | ||
6605 | /* | |
6606 | * clear BIT 15 explicitly as we have seen at least | |
6607 | * a couple of instances where this was set and this | |
6608 | * was causing the firmware to not be initialized. | |
6609 | */ | |
6610 | nv->firmware_options_1 &= cpu_to_le32(~BIT_15); | |
6611 | /* Enable target PRLI control */ | |
6612 | nv->firmware_options_2 |= cpu_to_le32(BIT_14); | |
6613 | } else { | |
6614 | if (ha->tgt.saved_set) { | |
6615 | nv->exchange_count = ha->tgt.saved_exchange_count; | |
6616 | nv->firmware_options_1 = | |
6617 | ha->tgt.saved_firmware_options_1; | |
6618 | nv->firmware_options_2 = | |
6619 | ha->tgt.saved_firmware_options_2; | |
6620 | nv->firmware_options_3 = | |
6621 | ha->tgt.saved_firmware_options_3; | |
6622 | } | |
6623 | return; | |
6624 | } | |
6625 | ||
6626 | if (ha->base_qpair->enable_class_2) { | |
6627 | if (vha->flags.init_done) | |
6628 | fc_host_supported_classes(vha->host) = | |
6629 | FC_COS_CLASS2 | FC_COS_CLASS3; | |
6630 | ||
6631 | nv->firmware_options_2 |= cpu_to_le32(BIT_8); | |
6632 | } else { | |
6633 | if (vha->flags.init_done) | |
6634 | fc_host_supported_classes(vha->host) = FC_COS_CLASS3; | |
6635 | ||
6636 | nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); | |
6637 | } | |
6638 | } | |
6639 | ||
6640 | void | |
6641 | qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, | |
6642 | struct init_cb_24xx *icb) | |
6643 | { | |
6644 | struct qla_hw_data *ha = vha->hw; | |
6645 | ||
6646 | if (!QLA_TGT_MODE_ENABLED()) | |
6647 | return; | |
6648 | ||
6649 | if (ha->tgt.node_name_set) { | |
6650 | memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); | |
6651 | icb->firmware_options_1 |= cpu_to_le32(BIT_14); | |
6652 | } | |
6653 | ||
6654 | /* disable ZIO at start time. */ | |
6655 | if (!vha->flags.init_done) { | |
6656 | uint32_t tmp; | |
6657 | tmp = le32_to_cpu(icb->firmware_options_2); | |
6658 | tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0); | |
6659 | icb->firmware_options_2 = cpu_to_le32(tmp); | |
6660 | } | |
6661 | } | |
6662 | ||
6663 | void | |
6664 | qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv) | |
6665 | { | |
6666 | struct qla_hw_data *ha = vha->hw; | |
6667 | ||
6668 | if (!QLA_TGT_MODE_ENABLED()) | |
6669 | return; | |
6670 | ||
6671 | if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { | |
6672 | if (!ha->tgt.saved_set) { | |
6673 | /* We save only once */ | |
6674 | ha->tgt.saved_exchange_count = nv->exchange_count; | |
6675 | ha->tgt.saved_firmware_options_1 = | |
6676 | nv->firmware_options_1; | |
6677 | ha->tgt.saved_firmware_options_2 = | |
6678 | nv->firmware_options_2; | |
6679 | ha->tgt.saved_firmware_options_3 = | |
6680 | nv->firmware_options_3; | |
6681 | ha->tgt.saved_set = 1; | |
6682 | } | |
6683 | ||
6684 | if (qla_tgt_mode_enabled(vha)) | |
6685 | nv->exchange_count = cpu_to_le16(0xFFFF); | |
6686 | else /* dual */ | |
6687 | nv->exchange_count = cpu_to_le16(ql2xexchoffld); | |
6688 | ||
6689 | /* Enable target mode */ | |
6690 | nv->firmware_options_1 |= cpu_to_le32(BIT_4); | |
6691 | ||
6692 | /* Disable ini mode, if requested */ | |
6693 | if (qla_tgt_mode_enabled(vha)) | |
6694 | nv->firmware_options_1 |= cpu_to_le32(BIT_5); | |
6695 | /* Disable Full Login after LIP */ | |
6696 | nv->firmware_options_1 &= cpu_to_le32(~BIT_13); | |
6697 | /* Enable initial LIP */ | |
6698 | nv->firmware_options_1 &= cpu_to_le32(~BIT_9); | |
6699 | /* | |
6700 | * clear BIT 15 explicitly as we have seen at | |
6701 | * least a couple of instances where this was set | |
6702 | * and this was causing the firmware to not be | |
6703 | * initialized. | |
6704 | */ | |
6705 | nv->firmware_options_1 &= cpu_to_le32(~BIT_15); | |
6706 | if (ql2xtgt_tape_enable) | |
6707 | /* Enable FC tape support */ | |
6708 | nv->firmware_options_2 |= cpu_to_le32(BIT_12); | |
6709 | else | |
6710 | /* Disable FC tape support */ | |
6711 | nv->firmware_options_2 &= cpu_to_le32(~BIT_12); | |
6712 | ||
6713 | /* Disable Full Login after LIP */ | |
6714 | nv->host_p &= cpu_to_le32(~BIT_10); | |
6715 | /* Enable target PRLI control */ | |
6716 | nv->firmware_options_2 |= cpu_to_le32(BIT_14); | |
6717 | } else { | |
6718 | if (ha->tgt.saved_set) { | |
6719 | nv->exchange_count = ha->tgt.saved_exchange_count; | |
6720 | nv->firmware_options_1 = | |
6721 | ha->tgt.saved_firmware_options_1; | |
6722 | nv->firmware_options_2 = | |
6723 | ha->tgt.saved_firmware_options_2; | |
6724 | nv->firmware_options_3 = | |
6725 | ha->tgt.saved_firmware_options_3; | |
6726 | } | |
6727 | return; | |
6728 | } | |
6729 | ||
6730 | if (ha->base_qpair->enable_class_2) { | |
6731 | if (vha->flags.init_done) | |
6732 | fc_host_supported_classes(vha->host) = | |
6733 | FC_COS_CLASS2 | FC_COS_CLASS3; | |
6734 | ||
6735 | nv->firmware_options_2 |= cpu_to_le32(BIT_8); | |
6736 | } else { | |
6737 | if (vha->flags.init_done) | |
6738 | fc_host_supported_classes(vha->host) = FC_COS_CLASS3; | |
6739 | ||
6740 | nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); | |
6741 | } | |
6742 | } | |
6743 | ||
6744 | void | |
6745 | qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha, | |
6746 | struct init_cb_81xx *icb) | |
6747 | { | |
6748 | struct qla_hw_data *ha = vha->hw; | |
6749 | ||
6750 | if (!QLA_TGT_MODE_ENABLED()) | |
6751 | return; | |
6752 | ||
6753 | if (ha->tgt.node_name_set) { | |
6754 | memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); | |
6755 | icb->firmware_options_1 |= cpu_to_le32(BIT_14); | |
6756 | } | |
6757 | ||
6758 | /* disable ZIO at start time. */ | |
6759 | if (!vha->flags.init_done) { | |
6760 | uint32_t tmp; | |
6761 | tmp = le32_to_cpu(icb->firmware_options_2); | |
6762 | tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0); | |
6763 | icb->firmware_options_2 = cpu_to_le32(tmp); | |
6764 | } | |
6765 | ||
6766 | } | |
6767 | ||
6768 | void | |
6769 | qlt_83xx_iospace_config(struct qla_hw_data *ha) | |
6770 | { | |
6771 | if (!QLA_TGT_MODE_ENABLED()) | |
6772 | return; | |
6773 | ||
6774 | ha->msix_count += 1; /* For ATIO Q */ | |
6775 | } | |
6776 | ||
6777 | ||
6778 | void | |
6779 | qlt_modify_vp_config(struct scsi_qla_host *vha, | |
6780 | struct vp_config_entry_24xx *vpmod) | |
6781 | { | |
6782 | /* enable target mode. Bit5 = 1 => disable */ | |
6783 | if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) | |
6784 | vpmod->options_idx1 &= ~BIT_5; | |
6785 | ||
6786 | /* Disable ini mode, if requested. bit4 = 1 => disable */ | |
6787 | if (qla_tgt_mode_enabled(vha)) | |
6788 | vpmod->options_idx1 &= ~BIT_4; | |
6789 | } | |
6790 | ||
6791 | void | |
6792 | qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) | |
6793 | { | |
6794 | int rc; | |
6795 | ||
6796 | if (!QLA_TGT_MODE_ENABLED()) | |
6797 | return; | |
6798 | ||
6799 | if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha)) { | |
6800 | ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in; | |
6801 | ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out; | |
6802 | } else { | |
6803 | ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in; | |
6804 | ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out; | |
6805 | } | |
6806 | ||
6807 | mutex_init(&base_vha->vha_tgt.tgt_mutex); | |
6808 | mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex); | |
6809 | ||
6810 | INIT_LIST_HEAD(&base_vha->unknown_atio_list); | |
6811 | INIT_DELAYED_WORK(&base_vha->unknown_atio_work, | |
6812 | qlt_unknown_atio_work_fn); | |
6813 | ||
6814 | qlt_clear_mode(base_vha); | |
6815 | ||
6816 | rc = btree_init32(&ha->tgt.host_map); | |
6817 | if (rc) | |
6818 | ql_log(ql_log_info, base_vha, 0xd03d, | |
6819 | "Unable to initialize ha->host_map btree\n"); | |
6820 | ||
6821 | qlt_update_vp_map(base_vha, SET_VP_IDX); | |
6822 | } | |
6823 | ||
6824 | irqreturn_t | |
6825 | qla83xx_msix_atio_q(int irq, void *dev_id) | |
6826 | { | |
6827 | struct rsp_que *rsp; | |
6828 | scsi_qla_host_t *vha; | |
6829 | struct qla_hw_data *ha; | |
6830 | unsigned long flags; | |
6831 | ||
6832 | rsp = (struct rsp_que *) dev_id; | |
6833 | ha = rsp->hw; | |
6834 | vha = pci_get_drvdata(ha->pdev); | |
6835 | ||
6836 | spin_lock_irqsave(&ha->tgt.atio_lock, flags); | |
6837 | ||
6838 | qlt_24xx_process_atio_queue(vha, 0); | |
6839 | ||
6840 | spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); | |
6841 | ||
6842 | return IRQ_HANDLED; | |
6843 | } | |
6844 | ||
6845 | static void | |
6846 | qlt_handle_abts_recv_work(struct work_struct *work) | |
6847 | { | |
6848 | struct qla_tgt_sess_op *op = container_of(work, | |
6849 | struct qla_tgt_sess_op, work); | |
6850 | scsi_qla_host_t *vha = op->vha; | |
6851 | struct qla_hw_data *ha = vha->hw; | |
6852 | unsigned long flags; | |
6853 | ||
6854 | if (qla2x00_reset_active(vha) || | |
6855 | (op->chip_reset != ha->base_qpair->chip_reset)) | |
6856 | return; | |
6857 | ||
6858 | spin_lock_irqsave(&ha->tgt.atio_lock, flags); | |
6859 | qlt_24xx_process_atio_queue(vha, 0); | |
6860 | spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); | |
6861 | ||
6862 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
6863 | qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio); | |
6864 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
6865 | ||
6866 | kfree(op); | |
6867 | } | |
6868 | ||
6869 | void | |
6870 | qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp, | |
6871 | response_t *pkt) | |
6872 | { | |
6873 | struct qla_tgt_sess_op *op; | |
6874 | ||
6875 | op = kzalloc(sizeof(*op), GFP_ATOMIC); | |
6876 | ||
6877 | if (!op) { | |
6878 | /* do not reach for ATIO queue here. This is best effort err | |
6879 | * recovery at this point. | |
6880 | */ | |
6881 | qlt_response_pkt_all_vps(vha, rsp, pkt); | |
6882 | return; | |
6883 | } | |
6884 | ||
6885 | memcpy(&op->atio, pkt, sizeof(*pkt)); | |
6886 | op->vha = vha; | |
6887 | op->chip_reset = vha->hw->base_qpair->chip_reset; | |
6888 | op->rsp = rsp; | |
6889 | INIT_WORK(&op->work, qlt_handle_abts_recv_work); | |
6890 | queue_work(qla_tgt_wq, &op->work); | |
6891 | return; | |
6892 | } | |
6893 | ||
6894 | int | |
6895 | qlt_mem_alloc(struct qla_hw_data *ha) | |
6896 | { | |
6897 | if (!QLA_TGT_MODE_ENABLED()) | |
6898 | return 0; | |
6899 | ||
6900 | ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) * | |
6901 | MAX_MULTI_ID_FABRIC, GFP_KERNEL); | |
6902 | if (!ha->tgt.tgt_vp_map) | |
6903 | return -ENOMEM; | |
6904 | ||
6905 | ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, | |
6906 | (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), | |
6907 | &ha->tgt.atio_dma, GFP_KERNEL); | |
6908 | if (!ha->tgt.atio_ring) { | |
6909 | kfree(ha->tgt.tgt_vp_map); | |
6910 | return -ENOMEM; | |
6911 | } | |
6912 | return 0; | |
6913 | } | |
6914 | ||
6915 | void | |
6916 | qlt_mem_free(struct qla_hw_data *ha) | |
6917 | { | |
6918 | if (!QLA_TGT_MODE_ENABLED()) | |
6919 | return; | |
6920 | ||
6921 | if (ha->tgt.atio_ring) { | |
6922 | dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * | |
6923 | sizeof(struct atio_from_isp), ha->tgt.atio_ring, | |
6924 | ha->tgt.atio_dma); | |
6925 | } | |
6926 | kfree(ha->tgt.tgt_vp_map); | |
6927 | } | |
6928 | ||
6929 | /* vport_slock to be held by the caller */ | |
6930 | void | |
6931 | qlt_update_vp_map(struct scsi_qla_host *vha, int cmd) | |
6932 | { | |
6933 | void *slot; | |
6934 | u32 key; | |
6935 | int rc; | |
6936 | ||
6937 | if (!QLA_TGT_MODE_ENABLED()) | |
6938 | return; | |
6939 | ||
6940 | key = vha->d_id.b24; | |
6941 | ||
6942 | switch (cmd) { | |
6943 | case SET_VP_IDX: | |
6944 | vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha; | |
6945 | break; | |
6946 | case SET_AL_PA: | |
6947 | slot = btree_lookup32(&vha->hw->tgt.host_map, key); | |
6948 | if (!slot) { | |
6949 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018, | |
6950 | "Save vha in host_map %p %06x\n", vha, key); | |
6951 | rc = btree_insert32(&vha->hw->tgt.host_map, | |
6952 | key, vha, GFP_ATOMIC); | |
6953 | if (rc) | |
6954 | ql_log(ql_log_info, vha, 0xd03e, | |
6955 | "Unable to insert s_id into host_map: %06x\n", | |
6956 | key); | |
6957 | return; | |
6958 | } | |
6959 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019, | |
6960 | "replace existing vha in host_map %p %06x\n", vha, key); | |
6961 | btree_update32(&vha->hw->tgt.host_map, key, vha); | |
6962 | break; | |
6963 | case RESET_VP_IDX: | |
6964 | vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL; | |
6965 | break; | |
6966 | case RESET_AL_PA: | |
6967 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a, | |
6968 | "clear vha in host_map %p %06x\n", vha, key); | |
6969 | slot = btree_lookup32(&vha->hw->tgt.host_map, key); | |
6970 | if (slot) | |
6971 | btree_remove32(&vha->hw->tgt.host_map, key); | |
6972 | vha->d_id.b24 = 0; | |
6973 | break; | |
6974 | } | |
6975 | } | |
6976 | ||
6977 | void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id) | |
6978 | { | |
6979 | unsigned long flags; | |
6980 | struct qla_hw_data *ha = vha->hw; | |
6981 | ||
6982 | if (!vha->d_id.b24) { | |
6983 | spin_lock_irqsave(&ha->vport_slock, flags); | |
6984 | vha->d_id = id; | |
6985 | qlt_update_vp_map(vha, SET_AL_PA); | |
6986 | spin_unlock_irqrestore(&ha->vport_slock, flags); | |
6987 | } else if (vha->d_id.b24 != id.b24) { | |
6988 | spin_lock_irqsave(&ha->vport_slock, flags); | |
6989 | qlt_update_vp_map(vha, RESET_AL_PA); | |
6990 | vha->d_id = id; | |
6991 | qlt_update_vp_map(vha, SET_AL_PA); | |
6992 | spin_unlock_irqrestore(&ha->vport_slock, flags); | |
6993 | } | |
6994 | } | |
6995 | ||
6996 | static int __init qlt_parse_ini_mode(void) | |
6997 | { | |
6998 | if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) | |
6999 | ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; | |
7000 | else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) | |
7001 | ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED; | |
7002 | else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0) | |
7003 | ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED; | |
7004 | else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0) | |
7005 | ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL; | |
7006 | else | |
7007 | return false; | |
7008 | ||
7009 | return true; | |
7010 | } | |
7011 | ||
7012 | int __init qlt_init(void) | |
7013 | { | |
7014 | int ret; | |
7015 | ||
7016 | if (!qlt_parse_ini_mode()) { | |
7017 | ql_log(ql_log_fatal, NULL, 0xe06b, | |
7018 | "qlt_parse_ini_mode() failed\n"); | |
7019 | return -EINVAL; | |
7020 | } | |
7021 | ||
7022 | if (!QLA_TGT_MODE_ENABLED()) | |
7023 | return 0; | |
7024 | ||
7025 | qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", | |
7026 | sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct | |
7027 | qla_tgt_mgmt_cmd), 0, NULL); | |
7028 | if (!qla_tgt_mgmt_cmd_cachep) { | |
7029 | ql_log(ql_log_fatal, NULL, 0xd04b, | |
7030 | "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); | |
7031 | return -ENOMEM; | |
7032 | } | |
7033 | ||
7034 | qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep", | |
7035 | sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t), | |
7036 | 0, NULL); | |
7037 | ||
7038 | if (!qla_tgt_plogi_cachep) { | |
7039 | ql_log(ql_log_fatal, NULL, 0xe06d, | |
7040 | "kmem_cache_create for qla_tgt_plogi_cachep failed\n"); | |
7041 | ret = -ENOMEM; | |
7042 | goto out_mgmt_cmd_cachep; | |
7043 | } | |
7044 | ||
7045 | qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, | |
7046 | mempool_free_slab, qla_tgt_mgmt_cmd_cachep); | |
7047 | if (!qla_tgt_mgmt_cmd_mempool) { | |
7048 | ql_log(ql_log_fatal, NULL, 0xe06e, | |
7049 | "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); | |
7050 | ret = -ENOMEM; | |
7051 | goto out_plogi_cachep; | |
7052 | } | |
7053 | ||
7054 | qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); | |
7055 | if (!qla_tgt_wq) { | |
7056 | ql_log(ql_log_fatal, NULL, 0xe06f, | |
7057 | "alloc_workqueue for qla_tgt_wq failed\n"); | |
7058 | ret = -ENOMEM; | |
7059 | goto out_cmd_mempool; | |
7060 | } | |
7061 | /* | |
7062 | * Return 1 to signal that initiator-mode is being disabled | |
7063 | */ | |
7064 | return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; | |
7065 | ||
7066 | out_cmd_mempool: | |
7067 | mempool_destroy(qla_tgt_mgmt_cmd_mempool); | |
7068 | out_plogi_cachep: | |
7069 | kmem_cache_destroy(qla_tgt_plogi_cachep); | |
7070 | out_mgmt_cmd_cachep: | |
7071 | kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); | |
7072 | return ret; | |
7073 | } | |
7074 | ||
7075 | void qlt_exit(void) | |
7076 | { | |
7077 | if (!QLA_TGT_MODE_ENABLED()) | |
7078 | return; | |
7079 | ||
7080 | destroy_workqueue(qla_tgt_wq); | |
7081 | mempool_destroy(qla_tgt_mgmt_cmd_mempool); | |
7082 | kmem_cache_destroy(qla_tgt_plogi_cachep); | |
7083 | kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); | |
7084 | } |