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1 | /* | |
2 | * QLOGIC LINUX SOFTWARE | |
3 | * | |
4 | * QLogic ISP2x00 device driver for Linux 2.6.x | |
5 | * Copyright (C) 2003-2005 QLogic Corporation | |
6 | * (www.qlogic.com) | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 2, or (at your option) any | |
11 | * later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * General Public License for more details. | |
17 | * | |
18 | */ | |
19 | #include "qla_def.h" | |
20 | ||
21 | #include <linux/version.h> | |
22 | #include <linux/moduleparam.h> | |
23 | #include <linux/vmalloc.h> | |
24 | #include <linux/smp_lock.h> | |
25 | #include <linux/list.h> | |
26 | ||
27 | #include <scsi/scsi_tcq.h> | |
28 | #include <scsi/scsicam.h> | |
29 | #include <linux/delay.h> | |
30 | ||
31 | void qla2x00_vp_stop_timer(scsi_qla_host_t *); | |
32 | ||
33 | void | |
34 | qla2x00_vp_stop_timer(scsi_qla_host_t *vha) | |
35 | { | |
36 | if (vha->parent && vha->timer_active) { | |
37 | del_timer_sync(&vha->timer); | |
38 | vha->timer_active = 0; | |
39 | } | |
40 | } | |
41 | ||
42 | uint32_t | |
43 | qla24xx_allocate_vp_id(scsi_qla_host_t *vha) | |
44 | { | |
45 | uint32_t vp_id; | |
46 | scsi_qla_host_t *ha = vha->parent; | |
47 | ||
48 | /* Find an empty slot and assign an vp_id */ | |
49 | down(&ha->vport_sem); | |
50 | vp_id = find_first_zero_bit((unsigned long *)ha->vp_idx_map, | |
51 | MAX_MULTI_ID_FABRIC); | |
52 | if (vp_id > MAX_MULTI_ID_FABRIC) { | |
53 | DEBUG15(printk ("vp_id %d is bigger than MAX_MULTI_ID_FABRID\n", | |
54 | vp_id)); | |
55 | up(&ha->vport_sem); | |
56 | return vp_id; | |
57 | } | |
58 | ||
59 | set_bit(vp_id, (unsigned long *)ha->vp_idx_map); | |
60 | ha->num_vhosts++; | |
61 | vha->vp_idx = vp_id; | |
62 | list_add_tail(&vha->vp_list, &ha->vp_list); | |
63 | up(&ha->vport_sem); | |
64 | return vp_id; | |
65 | } | |
66 | ||
67 | void | |
68 | qla24xx_deallocate_vp_id(scsi_qla_host_t *vha) | |
69 | { | |
70 | uint16_t vp_id; | |
71 | scsi_qla_host_t *ha = vha->parent; | |
72 | ||
73 | down(&ha->vport_sem); | |
74 | vp_id = vha->vp_idx; | |
75 | ha->num_vhosts--; | |
76 | clear_bit(vp_id, (unsigned long *)ha->vp_idx_map); | |
77 | list_del(&vha->vp_list); | |
78 | up(&ha->vport_sem); | |
79 | } | |
80 | ||
81 | scsi_qla_host_t * | |
82 | qla24xx_find_vhost_by_name(scsi_qla_host_t *ha, uint8_t *port_name) | |
83 | { | |
84 | scsi_qla_host_t *vha; | |
85 | ||
86 | /* Locate matching device in database. */ | |
87 | list_for_each_entry(vha, &ha->vp_list, vp_list) { | |
88 | if (!memcmp(port_name, vha->port_name, WWN_SIZE)) | |
89 | return vha; | |
90 | } | |
91 | return NULL; | |
92 | } | |
93 | ||
94 | /* | |
95 | * qla2x00_mark_vp_devices_dead | |
96 | * Updates fcport state when device goes offline. | |
97 | * | |
98 | * Input: | |
99 | * ha = adapter block pointer. | |
100 | * fcport = port structure pointer. | |
101 | * | |
102 | * Return: | |
103 | * None. | |
104 | * | |
105 | * Context: | |
106 | */ | |
107 | static void | |
108 | qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha) | |
109 | { | |
110 | fc_port_t *fcport; | |
111 | scsi_qla_host_t *pha = to_qla_parent(vha); | |
112 | ||
113 | list_for_each_entry(fcport, &pha->fcports, list) { | |
114 | if (fcport->vp_idx != vha->vp_idx) | |
115 | continue; | |
116 | ||
117 | DEBUG15(printk("scsi(%ld): Marking port dead, " | |
118 | "loop_id=0x%04x :%x\n", | |
119 | vha->host_no, fcport->loop_id, fcport->vp_idx)); | |
120 | ||
121 | atomic_set(&fcport->state, FCS_DEVICE_DEAD); | |
122 | qla2x00_mark_device_lost(vha, fcport, 0, 0); | |
123 | } | |
124 | } | |
125 | ||
126 | int | |
127 | qla24xx_disable_vp(scsi_qla_host_t *vha) | |
128 | { | |
129 | int ret; | |
130 | ||
131 | ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL); | |
132 | atomic_set(&vha->loop_state, LOOP_DOWN); | |
133 | atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME); | |
134 | ||
135 | /* Delete all vp's fcports from parent's list */ | |
136 | qla2x00_mark_vp_devices_dead(vha); | |
137 | atomic_set(&vha->vp_state, VP_FAILED); | |
138 | vha->flags.management_server_logged_in = 0; | |
139 | if (ret == QLA_SUCCESS) { | |
140 | fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED); | |
141 | } else { | |
142 | fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED); | |
143 | return -1; | |
144 | } | |
145 | return 0; | |
146 | } | |
147 | ||
148 | int | |
149 | qla24xx_enable_vp(scsi_qla_host_t *vha) | |
150 | { | |
151 | int ret; | |
152 | scsi_qla_host_t *ha = vha->parent; | |
153 | ||
154 | /* Check if physical ha port is Up */ | |
155 | if (atomic_read(&ha->loop_state) == LOOP_DOWN || | |
156 | atomic_read(&ha->loop_state) == LOOP_DEAD ) { | |
157 | vha->vp_err_state = VP_ERR_PORTDWN; | |
158 | fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN); | |
159 | goto enable_failed; | |
160 | } | |
161 | ||
162 | /* Initialize the new vport unless it is a persistent port */ | |
163 | down(&ha->vport_sem); | |
164 | ret = qla24xx_modify_vp_config(vha); | |
165 | up(&ha->vport_sem); | |
166 | ||
167 | if (ret != QLA_SUCCESS) { | |
168 | fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED); | |
169 | goto enable_failed; | |
170 | } | |
171 | ||
172 | DEBUG15(qla_printk(KERN_INFO, ha, | |
173 | "Virtual port with id: %d - Enabled\n", vha->vp_idx)); | |
174 | return 0; | |
175 | ||
176 | enable_failed: | |
177 | DEBUG15(qla_printk(KERN_INFO, ha, | |
178 | "Virtual port with id: %d - Disabled\n", vha->vp_idx)); | |
179 | return 1; | |
180 | } | |
181 | ||
182 | static void | |
183 | qla24xx_configure_vp(scsi_qla_host_t *vha) | |
184 | { | |
185 | struct fc_vport *fc_vport; | |
186 | int ret; | |
187 | ||
188 | fc_vport = vha->fc_vport; | |
189 | ||
190 | DEBUG15(printk("scsi(%ld): %s: change request #3 for this host.\n", | |
191 | vha->host_no, __func__)); | |
192 | ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx); | |
193 | if (ret != QLA_SUCCESS) { | |
194 | DEBUG15(qla_printk(KERN_ERR, vha, "Failed to enable receiving" | |
195 | " of RSCN requests: 0x%x\n", ret)); | |
196 | return; | |
197 | } else { | |
198 | /* Corresponds to SCR enabled */ | |
199 | clear_bit(VP_SCR_NEEDED, &vha->vp_flags); | |
200 | } | |
201 | ||
202 | vha->flags.online = 1; | |
203 | if (qla24xx_configure_vhba(vha)) | |
204 | return; | |
205 | ||
206 | atomic_set(&vha->vp_state, VP_ACTIVE); | |
207 | fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE); | |
208 | } | |
209 | ||
210 | void | |
211 | qla2x00_alert_all_vps(scsi_qla_host_t *ha, uint16_t *mb) | |
212 | { | |
213 | int i, vp_idx_matched; | |
214 | scsi_qla_host_t *vha; | |
215 | ||
216 | if (ha->parent) | |
217 | return; | |
218 | ||
219 | i = find_next_bit((unsigned long *)ha->vp_idx_map, | |
220 | MAX_MULTI_ID_FABRIC + 1, 1); | |
221 | for (;i <= MAX_MULTI_ID_FABRIC; | |
222 | i = find_next_bit((unsigned long *)ha->vp_idx_map, | |
223 | MAX_MULTI_ID_FABRIC + 1, i + 1)) { | |
224 | vp_idx_matched = 0; | |
225 | ||
226 | list_for_each_entry(vha, &ha->vp_list, vp_list) { | |
227 | if (i == vha->vp_idx) { | |
228 | vp_idx_matched = 1; | |
229 | break; | |
230 | } | |
231 | } | |
232 | ||
233 | if (vp_idx_matched) { | |
234 | switch (mb[0]) { | |
235 | case MBA_LIP_OCCURRED: | |
236 | case MBA_LOOP_UP: | |
237 | case MBA_LOOP_DOWN: | |
238 | case MBA_LIP_RESET: | |
239 | case MBA_POINT_TO_POINT: | |
240 | case MBA_CHG_IN_CONNECTION: | |
241 | case MBA_PORT_UPDATE: | |
242 | case MBA_RSCN_UPDATE: | |
243 | DEBUG15(printk("scsi(%ld)%s: Async_event for" | |
244 | " VP[%d], mb = 0x%x, vha=%p\n", | |
245 | vha->host_no, __func__,i, *mb, vha)); | |
246 | qla2x00_async_event(vha, mb); | |
247 | break; | |
248 | } | |
249 | } | |
250 | } | |
251 | } | |
252 | ||
253 | void | |
254 | qla2x00_vp_abort_isp(scsi_qla_host_t *vha) | |
255 | { | |
256 | /* | |
257 | * Physical port will do most of the abort and recovery work. We can | |
258 | * just treat it as a loop down | |
259 | */ | |
260 | if (atomic_read(&vha->loop_state) != LOOP_DOWN) { | |
261 | atomic_set(&vha->loop_state, LOOP_DOWN); | |
262 | qla2x00_mark_all_devices_lost(vha, 0); | |
263 | } else { | |
264 | if (!atomic_read(&vha->loop_down_timer)) | |
265 | atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME); | |
266 | } | |
267 | ||
268 | DEBUG15(printk("scsi(%ld): Scheduling enable of Vport %d...\n", | |
269 | vha->host_no, vha->vp_idx)); | |
270 | qla24xx_enable_vp(vha); | |
271 | } | |
272 | ||
273 | int | |
274 | qla2x00_do_dpc_vp(scsi_qla_host_t *vha) | |
275 | { | |
276 | if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) { | |
277 | /* VP acquired. complete port configuration */ | |
278 | qla24xx_configure_vp(vha); | |
279 | return 0; | |
280 | } | |
281 | ||
282 | if (test_and_clear_bit(ISP_ABORT_NEEDED, &vha->dpc_flags)) | |
283 | qla2x00_vp_abort_isp(vha); | |
284 | ||
285 | if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) && | |
286 | (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) { | |
287 | clear_bit(RESET_ACTIVE, &vha->dpc_flags); | |
288 | } | |
289 | ||
290 | if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) { | |
291 | if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) { | |
292 | qla2x00_loop_resync(vha); | |
293 | clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags); | |
294 | } | |
295 | } | |
296 | ||
297 | return 0; | |
298 | } | |
299 | ||
300 | void | |
301 | qla2x00_do_dpc_all_vps(scsi_qla_host_t *ha) | |
302 | { | |
303 | int ret; | |
304 | int i, vp_idx_matched; | |
305 | scsi_qla_host_t *vha; | |
306 | ||
307 | if (ha->parent) | |
308 | return; | |
309 | if (list_empty(&ha->vp_list)) | |
310 | return; | |
311 | ||
312 | clear_bit(VP_DPC_NEEDED, &ha->dpc_flags); | |
313 | ||
314 | i = find_next_bit((unsigned long *)ha->vp_idx_map, | |
315 | MAX_MULTI_ID_FABRIC + 1, 1); | |
316 | for (;i <= MAX_MULTI_ID_FABRIC; | |
317 | i = find_next_bit((unsigned long *)ha->vp_idx_map, | |
318 | MAX_MULTI_ID_FABRIC + 1, i + 1)) { | |
319 | vp_idx_matched = 0; | |
320 | ||
321 | list_for_each_entry(vha, &ha->vp_list, vp_list) { | |
322 | if (i == vha->vp_idx) { | |
323 | vp_idx_matched = 1; | |
324 | break; | |
325 | } | |
326 | } | |
327 | ||
328 | if (vp_idx_matched) | |
329 | ret = qla2x00_do_dpc_vp(vha); | |
330 | } | |
331 | } | |
332 | ||
333 | int | |
334 | qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport) | |
335 | { | |
336 | scsi_qla_host_t *ha = shost_priv(fc_vport->shost); | |
337 | scsi_qla_host_t *vha; | |
338 | uint8_t port_name[WWN_SIZE]; | |
339 | ||
340 | if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR) | |
341 | return VPCERR_UNSUPPORTED; | |
342 | ||
343 | /* Check up the F/W and H/W support NPIV */ | |
344 | if (!ha->flags.npiv_supported) | |
345 | return VPCERR_UNSUPPORTED; | |
346 | ||
347 | /* Check up whether npiv supported switch presented */ | |
348 | if (!(ha->switch_cap & FLOGI_MID_SUPPORT)) | |
349 | return VPCERR_NO_FABRIC_SUPP; | |
350 | ||
351 | /* Check up unique WWPN */ | |
352 | u64_to_wwn(fc_vport->port_name, port_name); | |
353 | vha = qla24xx_find_vhost_by_name(ha, port_name); | |
354 | if (vha) | |
355 | return VPCERR_BAD_WWN; | |
356 | ||
357 | /* Check up max-npiv-supports */ | |
358 | if (ha->num_vhosts > ha->max_npiv_vports) { | |
359 | DEBUG15(printk("scsi(%ld): num_vhosts %d is bigger than " | |
360 | "max_npv_vports %d.\n", ha->host_no, | |
361 | (uint16_t) ha->num_vhosts, (int) ha->max_npiv_vports)); | |
362 | return VPCERR_UNSUPPORTED; | |
363 | } | |
364 | return 0; | |
365 | } | |
366 | ||
367 | scsi_qla_host_t * | |
368 | qla24xx_create_vhost(struct fc_vport *fc_vport) | |
369 | { | |
370 | scsi_qla_host_t *ha = shost_priv(fc_vport->shost); | |
371 | scsi_qla_host_t *vha; | |
372 | struct Scsi_Host *host; | |
373 | ||
374 | host = scsi_host_alloc(&qla24xx_driver_template, | |
375 | sizeof(scsi_qla_host_t)); | |
376 | if (!host) { | |
377 | printk(KERN_WARNING | |
378 | "qla2xxx: scsi_host_alloc() failed for vport\n"); | |
379 | return(NULL); | |
380 | } | |
381 | ||
382 | vha = shost_priv(host); | |
383 | ||
384 | /* clone the parent hba */ | |
385 | memcpy(vha, ha, sizeof (scsi_qla_host_t)); | |
386 | ||
387 | fc_vport->dd_data = vha; | |
388 | ||
389 | vha->node_name = kmalloc(WWN_SIZE * sizeof(char), GFP_KERNEL); | |
390 | if (!vha->node_name) | |
391 | goto create_vhost_failed_1; | |
392 | ||
393 | vha->port_name = kmalloc(WWN_SIZE * sizeof(char), GFP_KERNEL); | |
394 | if (!vha->port_name) | |
395 | goto create_vhost_failed_2; | |
396 | ||
397 | /* New host info */ | |
398 | u64_to_wwn(fc_vport->node_name, vha->node_name); | |
399 | u64_to_wwn(fc_vport->port_name, vha->port_name); | |
400 | ||
401 | vha->host = host; | |
402 | vha->host_no = host->host_no; | |
403 | vha->parent = ha; | |
404 | vha->fc_vport = fc_vport; | |
405 | vha->device_flags = 0; | |
406 | vha->instance = num_hosts; | |
407 | vha->vp_idx = qla24xx_allocate_vp_id(vha); | |
408 | if (vha->vp_idx > ha->max_npiv_vports) { | |
409 | DEBUG15(printk("scsi(%ld): Couldn't allocate vp_id.\n", | |
410 | vha->host_no)); | |
411 | goto create_vhost_failed_3; | |
412 | } | |
413 | vha->mgmt_svr_loop_id = 10 + vha->vp_idx; | |
414 | ||
415 | init_MUTEX(&vha->mbx_cmd_sem); | |
416 | init_MUTEX_LOCKED(&vha->mbx_intr_sem); | |
417 | ||
418 | INIT_LIST_HEAD(&vha->list); | |
419 | INIT_LIST_HEAD(&vha->fcports); | |
420 | INIT_LIST_HEAD(&vha->vp_fcports); | |
421 | ||
422 | vha->dpc_flags = 0L; | |
423 | set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags); | |
424 | set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags); | |
425 | ||
426 | /* | |
427 | * To fix the issue of processing a parent's RSCN for the vport before | |
428 | * its SCR is complete. | |
429 | */ | |
430 | set_bit(VP_SCR_NEEDED, &vha->vp_flags); | |
431 | atomic_set(&vha->loop_state, LOOP_DOWN); | |
432 | atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME); | |
433 | ||
434 | qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL); | |
435 | ||
436 | host->can_queue = vha->request_q_length + 128; | |
437 | host->this_id = 255; | |
438 | host->cmd_per_lun = 3; | |
439 | host->max_cmd_len = MAX_CMDSZ; | |
440 | host->max_channel = MAX_BUSES - 1; | |
441 | host->max_lun = MAX_LUNS; | |
442 | host->unique_id = vha->instance; | |
443 | host->max_id = MAX_TARGETS_2200; | |
444 | host->transportt = qla2xxx_transport_vport_template; | |
445 | ||
446 | DEBUG15(printk("DEBUG: detect vport hba %ld at address = %p\n", | |
447 | vha->host_no, vha)); | |
448 | ||
449 | vha->flags.init_done = 1; | |
450 | num_hosts++; | |
451 | ||
452 | down(&ha->vport_sem); | |
453 | set_bit(vha->vp_idx, (unsigned long *)ha->vp_idx_map); | |
454 | ha->cur_vport_count++; | |
455 | up(&ha->vport_sem); | |
456 | ||
457 | return vha; | |
458 | ||
459 | create_vhost_failed_3: | |
460 | kfree(vha->port_name); | |
461 | ||
462 | create_vhost_failed_2: | |
463 | kfree(vha->node_name); | |
464 | ||
465 | create_vhost_failed_1: | |
466 | return NULL; | |
467 | } |