Merge branch 'linux-next' of git://git.infradead.org/ubifs-2.6
[linux-2.6] / drivers / scsi / qla2xxx / qla_mid.c
1 /*
2  * QLogic Fibre Channel HBA Driver
3  * Copyright (c)  2003-2008 QLogic Corporation
4  *
5  * See LICENSE.qla2xxx for copyright and licensing details.
6  */
7 #include "qla_def.h"
8 #include "qla_gbl.h"
9
10 #include <linux/moduleparam.h>
11 #include <linux/vmalloc.h>
12 #include <linux/smp_lock.h>
13 #include <linux/list.h>
14
15 #include <scsi/scsi_tcq.h>
16 #include <scsi/scsicam.h>
17 #include <linux/delay.h>
18
19 void
20 qla2x00_vp_stop_timer(scsi_qla_host_t *vha)
21 {
22         if (vha->vp_idx && vha->timer_active) {
23                 del_timer_sync(&vha->timer);
24                 vha->timer_active = 0;
25         }
26 }
27
28 static uint32_t
29 qla24xx_allocate_vp_id(scsi_qla_host_t *vha)
30 {
31         uint32_t vp_id;
32         struct qla_hw_data *ha = vha->hw;
33
34         /* Find an empty slot and assign an vp_id */
35         mutex_lock(&ha->vport_lock);
36         vp_id = find_first_zero_bit(ha->vp_idx_map, ha->max_npiv_vports + 1);
37         if (vp_id > ha->max_npiv_vports) {
38                 DEBUG15(printk ("vp_id %d is bigger than max-supported %d.\n",
39                     vp_id, ha->max_npiv_vports));
40                 mutex_unlock(&ha->vport_lock);
41                 return vp_id;
42         }
43
44         set_bit(vp_id, ha->vp_idx_map);
45         ha->num_vhosts++;
46         ha->cur_vport_count++;
47         vha->vp_idx = vp_id;
48         list_add_tail(&vha->list, &ha->vp_list);
49         mutex_unlock(&ha->vport_lock);
50         return vp_id;
51 }
52
53 void
54 qla24xx_deallocate_vp_id(scsi_qla_host_t *vha)
55 {
56         uint16_t vp_id;
57         struct qla_hw_data *ha = vha->hw;
58
59         mutex_lock(&ha->vport_lock);
60         vp_id = vha->vp_idx;
61         ha->num_vhosts--;
62         ha->cur_vport_count--;
63         clear_bit(vp_id, ha->vp_idx_map);
64         list_del(&vha->list);
65         mutex_unlock(&ha->vport_lock);
66 }
67
68 static scsi_qla_host_t *
69 qla24xx_find_vhost_by_name(struct qla_hw_data *ha, uint8_t *port_name)
70 {
71         scsi_qla_host_t *vha;
72         struct scsi_qla_host *tvha;
73
74         /* Locate matching device in database. */
75         list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) {
76                 if (!memcmp(port_name, vha->port_name, WWN_SIZE))
77                         return vha;
78         }
79         return NULL;
80 }
81
82 /*
83  * qla2x00_mark_vp_devices_dead
84  *      Updates fcport state when device goes offline.
85  *
86  * Input:
87  *      ha = adapter block pointer.
88  *      fcport = port structure pointer.
89  *
90  * Return:
91  *      None.
92  *
93  * Context:
94  */
95 static void
96 qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha)
97 {
98         fc_port_t *fcport;
99
100         list_for_each_entry(fcport, &vha->vp_fcports, list) {
101                 DEBUG15(printk("scsi(%ld): Marking port dead, "
102                     "loop_id=0x%04x :%x\n",
103                     vha->host_no, fcport->loop_id, fcport->vp_idx));
104
105                 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
106                 qla2x00_mark_device_lost(vha, fcport, 0, 0);
107                 atomic_set(&fcport->state, FCS_UNCONFIGURED);
108         }
109 }
110
111 int
112 qla24xx_disable_vp(scsi_qla_host_t *vha)
113 {
114         int ret;
115
116         ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
117         atomic_set(&vha->loop_state, LOOP_DOWN);
118         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
119
120         qla2x00_mark_vp_devices_dead(vha);
121         atomic_set(&vha->vp_state, VP_FAILED);
122         vha->flags.management_server_logged_in = 0;
123         if (ret == QLA_SUCCESS) {
124                 fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED);
125         } else {
126                 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
127                 return -1;
128         }
129         return 0;
130 }
131
132 int
133 qla24xx_enable_vp(scsi_qla_host_t *vha)
134 {
135         int ret;
136         struct qla_hw_data *ha = vha->hw;
137         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
138
139         /* Check if physical ha port is Up */
140         if (atomic_read(&base_vha->loop_state) == LOOP_DOWN  ||
141                 atomic_read(&base_vha->loop_state) == LOOP_DEAD) {
142                 vha->vp_err_state =  VP_ERR_PORTDWN;
143                 fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN);
144                 goto enable_failed;
145         }
146
147         /* Initialize the new vport unless it is a persistent port */
148         mutex_lock(&ha->vport_lock);
149         ret = qla24xx_modify_vp_config(vha);
150         mutex_unlock(&ha->vport_lock);
151
152         if (ret != QLA_SUCCESS) {
153                 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
154                 goto enable_failed;
155         }
156
157         DEBUG15(qla_printk(KERN_INFO, ha,
158             "Virtual port with id: %d - Enabled\n", vha->vp_idx));
159         return 0;
160
161 enable_failed:
162         DEBUG15(qla_printk(KERN_INFO, ha,
163             "Virtual port with id: %d - Disabled\n", vha->vp_idx));
164         return 1;
165 }
166
167 static void
168 qla24xx_configure_vp(scsi_qla_host_t *vha)
169 {
170         struct fc_vport *fc_vport;
171         int ret;
172
173         fc_vport = vha->fc_vport;
174
175         DEBUG15(printk("scsi(%ld): %s: change request #3 for this host.\n",
176             vha->host_no, __func__));
177         ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx);
178         if (ret != QLA_SUCCESS) {
179                 DEBUG15(qla_printk(KERN_ERR, vha->hw, "Failed to enable "
180                     "receiving of RSCN requests: 0x%x\n", ret));
181                 return;
182         } else {
183                 /* Corresponds to SCR enabled */
184                 clear_bit(VP_SCR_NEEDED, &vha->vp_flags);
185         }
186
187         vha->flags.online = 1;
188         if (qla24xx_configure_vhba(vha))
189                 return;
190
191         atomic_set(&vha->vp_state, VP_ACTIVE);
192         fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE);
193 }
194
195 void
196 qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb)
197 {
198         scsi_qla_host_t *vha, *tvha;
199         struct qla_hw_data *ha = rsp->hw;
200         int i = 0;
201
202         list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) {
203                 if (vha->vp_idx) {
204                         switch (mb[0]) {
205                         case MBA_LIP_OCCURRED:
206                         case MBA_LOOP_UP:
207                         case MBA_LOOP_DOWN:
208                         case MBA_LIP_RESET:
209                         case MBA_POINT_TO_POINT:
210                         case MBA_CHG_IN_CONNECTION:
211                         case MBA_PORT_UPDATE:
212                         case MBA_RSCN_UPDATE:
213                                 DEBUG15(printk("scsi(%ld)%s: Async_event for"
214                                 " VP[%d], mb = 0x%x, vha=%p\n",
215                                 vha->host_no, __func__, i, *mb, vha));
216                                 qla2x00_async_event(vha, rsp, mb);
217                                 break;
218                         }
219                 }
220                 i++;
221         }
222 }
223
224 int
225 qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
226 {
227         /*
228          * Physical port will do most of the abort and recovery work. We can
229          * just treat it as a loop down
230          */
231         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
232                 atomic_set(&vha->loop_state, LOOP_DOWN);
233                 qla2x00_mark_all_devices_lost(vha, 0);
234         } else {
235                 if (!atomic_read(&vha->loop_down_timer))
236                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
237         }
238
239         /* To exclusively reset vport, we need to log it out first.*/
240         if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
241                 qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
242
243         DEBUG15(printk("scsi(%ld): Scheduling enable of Vport %d...\n",
244             vha->host_no, vha->vp_idx));
245         return qla24xx_enable_vp(vha);
246 }
247
248 static int
249 qla2x00_do_dpc_vp(scsi_qla_host_t *vha)
250 {
251         struct qla_hw_data *ha = vha->hw;
252         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
253
254         if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) {
255                 /* VP acquired. complete port configuration */
256                 if (atomic_read(&base_vha->loop_state) == LOOP_READY) {
257                         qla24xx_configure_vp(vha);
258                 } else {
259                         set_bit(VP_IDX_ACQUIRED, &vha->vp_flags);
260                         set_bit(VP_DPC_NEEDED, &base_vha->dpc_flags);
261                 }
262
263                 return 0;
264         }
265
266         if (test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags)) {
267                 qla2x00_update_fcports(vha);
268                 clear_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags);
269         }
270
271         if ((test_and_clear_bit(RELOGIN_NEEDED, &vha->dpc_flags)) &&
272                 !test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) &&
273                 atomic_read(&vha->loop_state) != LOOP_DOWN) {
274
275                 DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
276                                                 vha->host_no));
277                 qla2x00_relogin(vha);
278
279                 DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
280                                                         vha->host_no));
281         }
282
283         if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) &&
284             (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) {
285                 clear_bit(RESET_ACTIVE, &vha->dpc_flags);
286         }
287
288         if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) {
289                 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) {
290                         qla2x00_loop_resync(vha);
291                         clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags);
292                 }
293         }
294
295         return 0;
296 }
297
298 void
299 qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha)
300 {
301         int ret;
302         struct qla_hw_data *ha = vha->hw;
303         scsi_qla_host_t *vp;
304         struct scsi_qla_host *tvp;
305
306         if (vha->vp_idx)
307                 return;
308         if (list_empty(&ha->vp_list))
309                 return;
310
311         clear_bit(VP_DPC_NEEDED, &vha->dpc_flags);
312
313         list_for_each_entry_safe(vp, tvp, &ha->vp_list, list) {
314                 if (vp->vp_idx)
315                         ret = qla2x00_do_dpc_vp(vp);
316         }
317 }
318
319 int
320 qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport)
321 {
322         scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
323         struct qla_hw_data *ha = base_vha->hw;
324         scsi_qla_host_t *vha;
325         uint8_t port_name[WWN_SIZE];
326
327         if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR)
328                 return VPCERR_UNSUPPORTED;
329
330         /* Check up the F/W and H/W support NPIV */
331         if (!ha->flags.npiv_supported)
332                 return VPCERR_UNSUPPORTED;
333
334         /* Check up whether npiv supported switch presented */
335         if (!(ha->switch_cap & FLOGI_MID_SUPPORT))
336                 return VPCERR_NO_FABRIC_SUPP;
337
338         /* Check up unique WWPN */
339         u64_to_wwn(fc_vport->port_name, port_name);
340         if (!memcmp(port_name, base_vha->port_name, WWN_SIZE))
341                 return VPCERR_BAD_WWN;
342         vha = qla24xx_find_vhost_by_name(ha, port_name);
343         if (vha)
344                 return VPCERR_BAD_WWN;
345
346         /* Check up max-npiv-supports */
347         if (ha->num_vhosts > ha->max_npiv_vports) {
348                 DEBUG15(printk("scsi(%ld): num_vhosts %ud is bigger than "
349                     "max_npv_vports %ud.\n", base_vha->host_no,
350                     ha->num_vhosts, ha->max_npiv_vports));
351                 return VPCERR_UNSUPPORTED;
352         }
353         return 0;
354 }
355
356 scsi_qla_host_t *
357 qla24xx_create_vhost(struct fc_vport *fc_vport)
358 {
359         scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
360         struct qla_hw_data *ha = base_vha->hw;
361         scsi_qla_host_t *vha;
362         struct scsi_host_template *sht = &qla2xxx_driver_template;
363         struct Scsi_Host *host;
364
365         vha = qla2x00_create_host(sht, ha);
366         if (!vha) {
367                 DEBUG(printk("qla2xxx: scsi_host_alloc() failed for vport\n"));
368                 return(NULL);
369         }
370
371         host = vha->host;
372         fc_vport->dd_data = vha;
373         /* New host info */
374         u64_to_wwn(fc_vport->node_name, vha->node_name);
375         u64_to_wwn(fc_vport->port_name, vha->port_name);
376
377         vha->fc_vport = fc_vport;
378         vha->device_flags = 0;
379         vha->vp_idx = qla24xx_allocate_vp_id(vha);
380         if (vha->vp_idx > ha->max_npiv_vports) {
381                 DEBUG15(printk("scsi(%ld): Couldn't allocate vp_id.\n",
382                         vha->host_no));
383                 goto create_vhost_failed;
384         }
385         vha->mgmt_svr_loop_id = 10 + vha->vp_idx;
386
387         vha->dpc_flags = 0L;
388         set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
389         set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
390
391         /*
392          * To fix the issue of processing a parent's RSCN for the vport before
393          * its SCR is complete.
394          */
395         set_bit(VP_SCR_NEEDED, &vha->vp_flags);
396         atomic_set(&vha->loop_state, LOOP_DOWN);
397         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
398
399         qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL);
400
401         memset(vha->req_ques, 0, sizeof(vha->req_ques));
402         vha->req_ques[0] = ha->req_q_map[0]->id;
403         host->can_queue = ha->req_q_map[0]->length + 128;
404         host->this_id = 255;
405         host->cmd_per_lun = 3;
406         host->max_cmd_len = MAX_CMDSZ;
407         host->max_channel = MAX_BUSES - 1;
408         host->max_lun = MAX_LUNS;
409         host->unique_id = host->host_no;
410         host->max_id = MAX_TARGETS_2200;
411         host->transportt = qla2xxx_transport_vport_template;
412
413         DEBUG15(printk("DEBUG: detect vport hba %ld at address = %p\n",
414             vha->host_no, vha));
415
416         vha->flags.init_done = 1;
417
418         return vha;
419
420 create_vhost_failed:
421         return NULL;
422 }
423
424 static void
425 qla25xx_free_req_que(struct scsi_qla_host *vha, struct req_que *req)
426 {
427         struct qla_hw_data *ha = vha->hw;
428         uint16_t que_id = req->id;
429
430         dma_free_coherent(&ha->pdev->dev, (req->length + 1) *
431                 sizeof(request_t), req->ring, req->dma);
432         req->ring = NULL;
433         req->dma = 0;
434         if (que_id) {
435                 ha->req_q_map[que_id] = NULL;
436                 mutex_lock(&ha->vport_lock);
437                 clear_bit(que_id, ha->req_qid_map);
438                 mutex_unlock(&ha->vport_lock);
439         }
440         kfree(req);
441         req = NULL;
442 }
443
444 static void
445 qla25xx_free_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
446 {
447         struct qla_hw_data *ha = vha->hw;
448         uint16_t que_id = rsp->id;
449
450         if (rsp->msix && rsp->msix->have_irq) {
451                 free_irq(rsp->msix->vector, rsp);
452                 rsp->msix->have_irq = 0;
453                 rsp->msix->rsp = NULL;
454         }
455         dma_free_coherent(&ha->pdev->dev, (rsp->length + 1) *
456                 sizeof(response_t), rsp->ring, rsp->dma);
457         rsp->ring = NULL;
458         rsp->dma = 0;
459         if (que_id) {
460                 ha->rsp_q_map[que_id] = NULL;
461                 mutex_lock(&ha->vport_lock);
462                 clear_bit(que_id, ha->rsp_qid_map);
463                 mutex_unlock(&ha->vport_lock);
464         }
465         kfree(rsp);
466         rsp = NULL;
467 }
468
469 int
470 qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req)
471 {
472         int ret = -1;
473
474         if (req) {
475                 req->options |= BIT_0;
476                 ret = qla25xx_init_req_que(vha, req);
477         }
478         if (ret == QLA_SUCCESS)
479                 qla25xx_free_req_que(vha, req);
480
481         return ret;
482 }
483
484 int
485 qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
486 {
487         int ret = -1;
488
489         if (rsp) {
490                 rsp->options |= BIT_0;
491                 ret = qla25xx_init_rsp_que(vha, rsp);
492         }
493         if (ret == QLA_SUCCESS)
494                 qla25xx_free_rsp_que(vha, rsp);
495
496         return ret;
497 }
498
499 int qla25xx_update_req_que(struct scsi_qla_host *vha, uint8_t que, uint8_t qos)
500 {
501         int ret = 0;
502         struct qla_hw_data *ha = vha->hw;
503         struct req_que *req = ha->req_q_map[que];
504
505         req->options |= BIT_3;
506         req->qos = qos;
507         ret = qla25xx_init_req_que(vha, req);
508         if (ret != QLA_SUCCESS)
509                 DEBUG2_17(printk(KERN_WARNING "%s failed\n", __func__));
510         /* restore options bit */
511         req->options &= ~BIT_3;
512         return ret;
513 }
514
515
516 /* Delete all queues for a given vhost */
517 int
518 qla25xx_delete_queues(struct scsi_qla_host *vha, uint8_t que_no)
519 {
520         int cnt, ret = 0;
521         struct req_que *req = NULL;
522         struct rsp_que *rsp = NULL;
523         struct qla_hw_data *ha = vha->hw;
524
525         if (que_no) {
526         /* Delete request queue */
527                 req = ha->req_q_map[que_no];
528                 if (req) {
529                         rsp = req->rsp;
530                         ret = qla25xx_delete_req_que(vha, req);
531                         if (ret != QLA_SUCCESS) {
532                                 qla_printk(KERN_WARNING, ha,
533                                 "Couldn't delete req que %d\n", req->id);
534                                 return ret;
535                         }
536                         /* Delete associated response queue */
537                         if (rsp) {
538                                 ret = qla25xx_delete_rsp_que(vha, rsp);
539                                 if (ret != QLA_SUCCESS) {
540                                         qla_printk(KERN_WARNING, ha,
541                                                 "Couldn't delete rsp que %d\n",
542                                                 rsp->id);
543                                         return ret;
544                                 }
545                         }
546                 }
547         } else {  /* delete all queues of this host */
548                 for (cnt = 0; cnt < QLA_MAX_HOST_QUES; cnt++) {
549                         /* Delete request queues */
550                         req = ha->req_q_map[vha->req_ques[cnt]];
551                         if (req && req->id) {
552                                 rsp = req->rsp;
553                                 ret = qla25xx_delete_req_que(vha, req);
554                                 if (ret != QLA_SUCCESS) {
555                                         qla_printk(KERN_WARNING, ha,
556                                                 "Couldn't delete req que %d\n",
557                                                 vha->req_ques[cnt]);
558                                         return ret;
559                                 }
560                                 vha->req_ques[cnt] = ha->req_q_map[0]->id;
561                         /* Delete associated response queue */
562                                 if (rsp && rsp->id) {
563                                         ret = qla25xx_delete_rsp_que(vha, rsp);
564                                         if (ret != QLA_SUCCESS) {
565                                                 qla_printk(KERN_WARNING, ha,
566                                                 "Couldn't delete rsp que %d\n",
567                                                 rsp->id);
568                                                 return ret;
569                                         }
570                                 }
571                         }
572                 }
573         }
574         qla_printk(KERN_INFO, ha, "Queues deleted for vport:%d\n",
575                 vha->vp_idx);
576         return ret;
577 }
578
579 int
580 qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options,
581         uint8_t vp_idx, uint16_t rid, uint8_t rsp_que, uint8_t qos)
582 {
583         int ret = 0;
584         struct req_que *req = NULL;
585         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
586         uint16_t que_id = 0;
587         device_reg_t __iomem *reg;
588
589         req = kzalloc(sizeof(struct req_que), GFP_KERNEL);
590         if (req == NULL) {
591                 qla_printk(KERN_WARNING, ha, "could not allocate memory"
592                         "for request que\n");
593                 goto que_failed;
594         }
595
596         req->length = REQUEST_ENTRY_CNT_24XX;
597         req->ring = dma_alloc_coherent(&ha->pdev->dev,
598                         (req->length + 1) * sizeof(request_t),
599                         &req->dma, GFP_KERNEL);
600         if (req->ring == NULL) {
601                 qla_printk(KERN_WARNING, ha,
602                 "Memory Allocation failed - request_ring\n");
603                 goto que_failed;
604         }
605
606         mutex_lock(&ha->vport_lock);
607         que_id = find_first_zero_bit(ha->req_qid_map, ha->max_queues);
608         if (que_id >= ha->max_queues) {
609                 mutex_unlock(&ha->vport_lock);
610                 qla_printk(KERN_INFO, ha, "No resources to create "
611                          "additional request queue\n");
612                 goto que_failed;
613         }
614         set_bit(que_id, ha->req_qid_map);
615         ha->req_q_map[que_id] = req;
616         req->rid = rid;
617         req->vp_idx = vp_idx;
618         req->qos = qos;
619
620         if (ha->rsp_q_map[rsp_que]) {
621                 req->rsp = ha->rsp_q_map[rsp_que];
622                 req->rsp->req = req;
623         }
624         /* Use alternate PCI bus number */
625         if (MSB(req->rid))
626                 options |= BIT_4;
627         /* Use alternate PCI devfn */
628         if (LSB(req->rid))
629                 options |= BIT_5;
630         req->options = options;
631         req->ring_ptr = req->ring;
632         req->ring_index = 0;
633         req->cnt = req->length;
634         req->id = que_id;
635         reg = ISP_QUE_REG(ha, que_id);
636         req->req_q_in = &reg->isp25mq.req_q_in;
637         req->req_q_out = &reg->isp25mq.req_q_out;
638         req->max_q_depth = ha->req_q_map[0]->max_q_depth;
639         mutex_unlock(&ha->vport_lock);
640
641         ret = qla25xx_init_req_que(base_vha, req);
642         if (ret != QLA_SUCCESS) {
643                 qla_printk(KERN_WARNING, ha, "%s failed\n", __func__);
644                 mutex_lock(&ha->vport_lock);
645                 clear_bit(que_id, ha->req_qid_map);
646                 mutex_unlock(&ha->vport_lock);
647                 goto que_failed;
648         }
649
650         return req->id;
651
652 que_failed:
653         qla25xx_free_req_que(base_vha, req);
654         return 0;
655 }
656
657 /* create response queue */
658 int
659 qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options,
660         uint8_t vp_idx, uint16_t rid)
661 {
662         int ret = 0;
663         struct rsp_que *rsp = NULL;
664         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
665         uint16_t que_id = 0;
666         device_reg_t __iomem *reg;
667
668         rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL);
669         if (rsp == NULL) {
670                 qla_printk(KERN_WARNING, ha, "could not allocate memory for"
671                                 " response que\n");
672                 goto que_failed;
673         }
674
675         rsp->length = RESPONSE_ENTRY_CNT_2300;
676         rsp->ring = dma_alloc_coherent(&ha->pdev->dev,
677                         (rsp->length + 1) * sizeof(response_t),
678                         &rsp->dma, GFP_KERNEL);
679         if (rsp->ring == NULL) {
680                 qla_printk(KERN_WARNING, ha,
681                 "Memory Allocation failed - response_ring\n");
682                 goto que_failed;
683         }
684
685         mutex_lock(&ha->vport_lock);
686         que_id = find_first_zero_bit(ha->rsp_qid_map, ha->max_queues);
687         if (que_id >= ha->max_queues) {
688                 mutex_unlock(&ha->vport_lock);
689                 qla_printk(KERN_INFO, ha, "No resources to create "
690                          "additional response queue\n");
691                 goto que_failed;
692         }
693         set_bit(que_id, ha->rsp_qid_map);
694
695         if (ha->flags.msix_enabled)
696                 rsp->msix = &ha->msix_entries[que_id + 1];
697         else
698                 qla_printk(KERN_WARNING, ha, "msix not enabled\n");
699
700         ha->rsp_q_map[que_id] = rsp;
701         rsp->rid = rid;
702         rsp->vp_idx = vp_idx;
703         rsp->hw = ha;
704         /* Use alternate PCI bus number */
705         if (MSB(rsp->rid))
706                 options |= BIT_4;
707         /* Use alternate PCI devfn */
708         if (LSB(rsp->rid))
709                 options |= BIT_5;
710         rsp->options = options;
711         rsp->ring_ptr = rsp->ring;
712         rsp->ring_index = 0;
713         rsp->id = que_id;
714         reg = ISP_QUE_REG(ha, que_id);
715         rsp->rsp_q_in = &reg->isp25mq.rsp_q_in;
716         rsp->rsp_q_out = &reg->isp25mq.rsp_q_out;
717         mutex_unlock(&ha->vport_lock);
718
719         ret = qla25xx_request_irq(rsp);
720         if (ret)
721                 goto que_failed;
722
723         ret = qla25xx_init_rsp_que(base_vha, rsp);
724         if (ret != QLA_SUCCESS) {
725                 qla_printk(KERN_WARNING, ha, "%s failed\n", __func__);
726                 mutex_lock(&ha->vport_lock);
727                 clear_bit(que_id, ha->rsp_qid_map);
728                 mutex_unlock(&ha->vport_lock);
729                 goto que_failed;
730         }
731
732         qla2x00_init_response_q_entries(rsp);
733
734         return rsp->id;
735
736 que_failed:
737         qla25xx_free_rsp_que(base_vha, rsp);
738         return 0;
739 }
740
741 int
742 qla25xx_create_queues(struct scsi_qla_host *vha, uint8_t qos)
743 {
744         uint16_t options = 0;
745         uint8_t ret = 0;
746         struct qla_hw_data *ha = vha->hw;
747
748         options |= BIT_1;
749         ret = qla25xx_create_rsp_que(ha, options, vha->vp_idx, 0);
750         if (!ret) {
751                 qla_printk(KERN_WARNING, ha, "Response Que create failed\n");
752                 return ret;
753         } else
754                 qla_printk(KERN_INFO, ha, "Response Que:%d created.\n", ret);
755
756         options = 0;
757         if (qos & BIT_7)
758                 options |= BIT_8;
759         ret = qla25xx_create_req_que(ha, options, vha->vp_idx, 0, ret,
760                                         qos & ~BIT_7);
761         if (ret) {
762                 vha->req_ques[0] = ret;
763                 qla_printk(KERN_INFO, ha, "Request Que:%d created.\n", ret);
764         } else
765                 qla_printk(KERN_WARNING, ha, "Request Que create failed\n");
766
767         return ret;
768 }