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[SCSI] st: fix possible memory use after free after MTSETBLK ioctl
[linux-2.6-block.git] / drivers / scsi / qla2xxx / qla_mid.c
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2c3dfe3f 1/*
01e58d8e
AV		 2 * QLogic Fibre Channel HBA Driver
3 * Copyright (c) 2003-2008 QLogic Corporation
2c3dfe3f 4 *
01e58d8e 5 * See LICENSE.qla2xxx for copyright and licensing details.
2c3dfe3f
SJ		 6 */
7#include "qla_def.h"
7b867cf7 8#include "qla_gbl.h"
2c3dfe3f 9
2c3dfe3f
SJ		 10#include <linux/moduleparam.h>
11#include <linux/vmalloc.h>
2c3dfe3f
SJ		 12#include <linux/list.h>
13
14#include <scsi/scsi_tcq.h>
15#include <scsi/scsicam.h>
16#include <linux/delay.h>
17
2c3dfe3f
SJ		 18void
19qla2x00_vp_stop_timer(scsi_qla_host_t *vha)
20{
7b867cf7 21 if (vha->vp_idx && vha->timer_active) {
2c3dfe3f
SJ		 22 del_timer_sync(&vha->timer);
23 vha->timer_active = 0;
24 }
25}
26
a824ebb3 27static uint32_t
2c3dfe3f
SJ		 28qla24xx_allocate_vp_id(scsi_qla_host_t *vha)
29{
30 uint32_t vp_id;
7b867cf7 31 struct qla_hw_data *ha = vha->hw;
2c3dfe3f
SJ		 32
33 /* Find an empty slot and assign an vp_id */
6c2f527c 34 mutex_lock(&ha->vport_lock);
eb66dc60
AV		 35 vp_id = find_first_zero_bit(ha->vp_idx_map, ha->max_npiv_vports + 1);
36 if (vp_id > ha->max_npiv_vports) {
37 DEBUG15(printk ("vp_id %d is bigger than max-supported %d.\n",
38 vp_id, ha->max_npiv_vports));
6c2f527c 39 mutex_unlock(&ha->vport_lock);
2c3dfe3f
SJ		 40 return vp_id;
41 }
42
eb66dc60 43 set_bit(vp_id, ha->vp_idx_map);
2c3dfe3f
SJ		 44 ha->num_vhosts++;
45 vha->vp_idx = vp_id;
7b867cf7 46 list_add_tail(&vha->list, &ha->vp_list);
6c2f527c 47 mutex_unlock(&ha->vport_lock);
2c3dfe3f
SJ		 48 return vp_id;
49}
50
51void
52qla24xx_deallocate_vp_id(scsi_qla_host_t *vha)
53{
54 uint16_t vp_id;
7b867cf7 55 struct qla_hw_data *ha = vha->hw;
2c3dfe3f 56
6c2f527c 57 mutex_lock(&ha->vport_lock);
2c3dfe3f
SJ		 58 vp_id = vha->vp_idx;
59 ha->num_vhosts--;
eb66dc60 60 clear_bit(vp_id, ha->vp_idx_map);
7b867cf7 61 list_del(&vha->list);
6c2f527c 62 mutex_unlock(&ha->vport_lock);
2c3dfe3f
SJ		 63}
64
a824ebb3 65static scsi_qla_host_t *
7b867cf7 66qla24xx_find_vhost_by_name(struct qla_hw_data *ha, uint8_t *port_name)
2c3dfe3f
SJ		 67{
68 scsi_qla_host_t *vha;
ee546b6e 69 struct scsi_qla_host *tvha;
2c3dfe3f
SJ		 70
71 /* Locate matching device in database. */
ee546b6e 72 list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) {
2c3dfe3f
SJ		 73 if (!memcmp(port_name, vha->port_name, WWN_SIZE))
74 return vha;
75 }
76 return NULL;
77}
78
79/*
80 * qla2x00_mark_vp_devices_dead
81 * Updates fcport state when device goes offline.
82 *
83 * Input:
84 * ha = adapter block pointer.
85 * fcport = port structure pointer.
86 *
87 * Return:
88 * None.
89 *
90 * Context:
91 */
26ff776d 92static void
2c3dfe3f
SJ		 93qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha)
94{
95 fc_port_t *fcport;
2c3dfe3f 96
7b867cf7 97 list_for_each_entry(fcport, &vha->vp_fcports, list) {
2c3dfe3f
SJ		 98 DEBUG15(printk("scsi(%ld): Marking port dead, "
99 "loop_id=0x%04x :%x\n",
100 vha->host_no, fcport->loop_id, fcport->vp_idx));
101
73208dfd 102 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
2c3dfe3f 103 qla2x00_mark_device_lost(vha, fcport, 0, 0);
c9c5ced9 104 atomic_set(&fcport->state, FCS_UNCONFIGURED);
2c3dfe3f
SJ		 105 }
106}
107
108int
109qla24xx_disable_vp(scsi_qla_host_t *vha)
110{
111 int ret;
112
113 ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
114 atomic_set(&vha->loop_state, LOOP_DOWN);
115 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
116
2c3dfe3f
SJ		 117 qla2x00_mark_vp_devices_dead(vha);
118 atomic_set(&vha->vp_state, VP_FAILED);
119 vha->flags.management_server_logged_in = 0;
120 if (ret == QLA_SUCCESS) {
121 fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED);
122 } else {
123 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
124 return -1;
125 }
126 return 0;
127}
128
129int
130qla24xx_enable_vp(scsi_qla_host_t *vha)
131{
132 int ret;
7b867cf7
AC		 133 struct qla_hw_data *ha = vha->hw;
134 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
2c3dfe3f
SJ		 135
136 /* Check if physical ha port is Up */
7b867cf7
AC		 137 if (atomic_read(&base_vha->loop_state) == LOOP_DOWN ||
138 atomic_read(&base_vha->loop_state) == LOOP_DEAD) {
2c3dfe3f
SJ		 139 vha->vp_err_state = VP_ERR_PORTDWN;
140 fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN);
141 goto enable_failed;
142 }
143
144 /* Initialize the new vport unless it is a persistent port */
6c2f527c 145 mutex_lock(&ha->vport_lock);
2c3dfe3f 146 ret = qla24xx_modify_vp_config(vha);
6c2f527c 147 mutex_unlock(&ha->vport_lock);
2c3dfe3f
SJ		 148
149 if (ret != QLA_SUCCESS) {
150 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
151 goto enable_failed;
152 }
153
154 DEBUG15(qla_printk(KERN_INFO, ha,
155 "Virtual port with id: %d - Enabled\n", vha->vp_idx));
156 return 0;
157
158enable_failed:
159 DEBUG15(qla_printk(KERN_INFO, ha,
160 "Virtual port with id: %d - Disabled\n", vha->vp_idx));
161 return 1;
162}
163
26ff776d 164static void
2c3dfe3f
SJ		 165qla24xx_configure_vp(scsi_qla_host_t *vha)
166{
167 struct fc_vport *fc_vport;
168 int ret;
169
170 fc_vport = vha->fc_vport;
171
172 DEBUG15(printk("scsi(%ld): %s: change request #3 for this host.\n",
173 vha->host_no, __func__));
174 ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx);
175 if (ret != QLA_SUCCESS) {
7b867cf7
AC		 176 DEBUG15(qla_printk(KERN_ERR, vha->hw, "Failed to enable "
177 "receiving of RSCN requests: 0x%x\n", ret));
2c3dfe3f
SJ		 178 return;
179 } else {
180 /* Corresponds to SCR enabled */
181 clear_bit(VP_SCR_NEEDED, &vha->vp_flags);
182 }
183
184 vha->flags.online = 1;
185 if (qla24xx_configure_vhba(vha))
186 return;
187
188 atomic_set(&vha->vp_state, VP_ACTIVE);
189 fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE);
190}
191
192void
73208dfd 193qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb)
2c3dfe3f 194{
ee546b6e 195 scsi_qla_host_t *vha, *tvha;
73208dfd 196 struct qla_hw_data *ha = rsp->hw;
7b867cf7 197 int i = 0;
2c3dfe3f 198
ee546b6e 199 list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) {
7b867cf7 200 if (vha->vp_idx) {
2c3dfe3f
SJ		 201 switch (mb[0]) {
202 case MBA_LIP_OCCURRED:
203 case MBA_LOOP_UP:
204 case MBA_LOOP_DOWN:
205 case MBA_LIP_RESET:
206 case MBA_POINT_TO_POINT:
207 case MBA_CHG_IN_CONNECTION:
208 case MBA_PORT_UPDATE:
209 case MBA_RSCN_UPDATE:
210 DEBUG15(printk("scsi(%ld)%s: Async_event for"
7b867cf7
AC		 211 " VP[%d], mb = 0x%x, vha=%p\n",
212 vha->host_no, __func__, i, *mb, vha));
73208dfd 213 qla2x00_async_event(vha, rsp, mb);
2c3dfe3f
SJ		 214 break;
215 }
216 }
7b867cf7 217 i++;
2c3dfe3f
SJ		 218 }
219}
220
7b867cf7 221int
2c3dfe3f
SJ		 222qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
223{
224 /*
225 * Physical port will do most of the abort and recovery work. We can
226 * just treat it as a loop down
227 */
228 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
229 atomic_set(&vha->loop_state, LOOP_DOWN);
230 qla2x00_mark_all_devices_lost(vha, 0);
231 } else {
232 if (!atomic_read(&vha->loop_down_timer))
233 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
234 }
235
0d6e61bc
AV		 236 /*
237 * To exclusively reset vport, we need to log it out first. Note: this
238 * control_vp can fail if ISP reset is already issued, this is
239 * expected, as the vp would be already logged out due to ISP reset.
240 */
7b867cf7
AC		 241 if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
242 qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
243
2c3dfe3f
SJ		 244 DEBUG15(printk("scsi(%ld): Scheduling enable of Vport %d...\n",
245 vha->host_no, vha->vp_idx));
7b867cf7 246 return qla24xx_enable_vp(vha);
2c3dfe3f
SJ		 247}
248
a824ebb3 249static int
2c3dfe3f
SJ		 250qla2x00_do_dpc_vp(scsi_qla_host_t *vha)
251{
ac280b67
AV		 252 qla2x00_do_work(vha);
253
2c3dfe3f
SJ		 254 if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) {
255 /* VP acquired. complete port configuration */
0d6e61bc 256 qla24xx_configure_vp(vha);
2c3dfe3f
SJ		 257 return 0;
258 }
259
7b867cf7
AC		 260 if (test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags)) {
261 qla2x00_update_fcports(vha);
262 clear_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags);
263 }
264
265 if ((test_and_clear_bit(RELOGIN_NEEDED, &vha->dpc_flags)) &&
266 !test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) &&
267 atomic_read(&vha->loop_state) != LOOP_DOWN) {
268
269 DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
270 vha->host_no));
271 qla2x00_relogin(vha);
272
273 DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
274 vha->host_no));
275 }
2c3dfe3f
SJ		 276
277 if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) &&
278 (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) {
279 clear_bit(RESET_ACTIVE, &vha->dpc_flags);
280 }
281
73208dfd 282 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) {
2c3dfe3f
SJ		 283 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) {
284 qla2x00_loop_resync(vha);
285 clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags);
286 }
287 }
288
289 return 0;
290}
291
292void
7b867cf7 293qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha)
2c3dfe3f
SJ		 294{
295 int ret;
7b867cf7
AC		 296 struct qla_hw_data *ha = vha->hw;
297 scsi_qla_host_t *vp;
ee546b6e 298 struct scsi_qla_host *tvp;
2c3dfe3f 299
7b867cf7 300 if (vha->vp_idx)
2c3dfe3f
SJ		 301 return;
302 if (list_empty(&ha->vp_list))
303 return;
304
7b867cf7 305 clear_bit(VP_DPC_NEEDED, &vha->dpc_flags);
2c3dfe3f 306
0d6e61bc
AV		 307 if (!(ha->current_topology & ISP_CFG_F))
308 return;
309
ee546b6e 310 list_for_each_entry_safe(vp, tvp, &ha->vp_list, list) {
7b867cf7
AC		 311 if (vp->vp_idx)
312 ret = qla2x00_do_dpc_vp(vp);
2c3dfe3f
SJ		 313 }
314}
315
316int
317qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport)
318{
7b867cf7
AC		 319 scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
320 struct qla_hw_data *ha = base_vha->hw;
2c3dfe3f
SJ		 321 scsi_qla_host_t *vha;
322 uint8_t port_name[WWN_SIZE];
323
324 if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR)
325 return VPCERR_UNSUPPORTED;
326
327 /* Check up the F/W and H/W support NPIV */
328 if (!ha->flags.npiv_supported)
329 return VPCERR_UNSUPPORTED;
330
331 /* Check up whether npiv supported switch presented */
332 if (!(ha->switch_cap & FLOGI_MID_SUPPORT))
333 return VPCERR_NO_FABRIC_SUPP;
334
335 /* Check up unique WWPN */
336 u64_to_wwn(fc_vport->port_name, port_name);
7b867cf7 337 if (!memcmp(port_name, base_vha->port_name, WWN_SIZE))
50db6b13 338 return VPCERR_BAD_WWN;
2c3dfe3f
SJ		 339 vha = qla24xx_find_vhost_by_name(ha, port_name);
340 if (vha)
341 return VPCERR_BAD_WWN;
342
343 /* Check up max-npiv-supports */
344 if (ha->num_vhosts > ha->max_npiv_vports) {
eb66dc60 345 DEBUG15(printk("scsi(%ld): num_vhosts %ud is bigger than "
7b867cf7 346 "max_npv_vports %ud.\n", base_vha->host_no,
eb66dc60 347 ha->num_vhosts, ha->max_npiv_vports));
2c3dfe3f
SJ		 348 return VPCERR_UNSUPPORTED;
349 }
350 return 0;
351}
352
353scsi_qla_host_t *
354qla24xx_create_vhost(struct fc_vport *fc_vport)
355{
7b867cf7
AC		 356 scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
357 struct qla_hw_data *ha = base_vha->hw;
2c3dfe3f 358 scsi_qla_host_t *vha;
a5326f86 359 struct scsi_host_template *sht = &qla2xxx_driver_template;
2c3dfe3f
SJ		 360 struct Scsi_Host *host;
361
7b867cf7
AC		 362 vha = qla2x00_create_host(sht, ha);
363 if (!vha) {
364 DEBUG(printk("qla2xxx: scsi_host_alloc() failed for vport\n"));
2c3dfe3f
SJ		 365 return(NULL);
366 }
367
7b867cf7 368 host = vha->host;
2c3dfe3f 369 fc_vport->dd_data = vha;
2c3dfe3f
SJ		 370 /* New host info */
371 u64_to_wwn(fc_vport->node_name, vha->node_name);
372 u64_to_wwn(fc_vport->port_name, vha->port_name);
373
2c3dfe3f
SJ		 374 vha->fc_vport = fc_vport;
375 vha->device_flags = 0;
2c3dfe3f
SJ		 376 vha->vp_idx = qla24xx_allocate_vp_id(vha);
377 if (vha->vp_idx > ha->max_npiv_vports) {
378 DEBUG15(printk("scsi(%ld): Couldn't allocate vp_id.\n",
379 vha->host_no));
7b867cf7 380 goto create_vhost_failed;
2c3dfe3f
SJ		 381 }
382 vha->mgmt_svr_loop_id = 10 + vha->vp_idx;
383
2c3dfe3f
SJ		 384 vha->dpc_flags = 0L;
385 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
386 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
387
388 /*
389 * To fix the issue of processing a parent's RSCN for the vport before
390 * its SCR is complete.
391 */
392 set_bit(VP_SCR_NEEDED, &vha->vp_flags);
393 atomic_set(&vha->loop_state, LOOP_DOWN);
394 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
395
396 qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL);
397
2afa19a9
AC		 398 vha->req = base_vha->req;
399 host->can_queue = base_vha->req->length + 128;
2c3dfe3f
SJ		 400 host->this_id = 255;
401 host->cmd_per_lun = 3;
402 host->max_cmd_len = MAX_CMDSZ;
403 host->max_channel = MAX_BUSES - 1;
404 host->max_lun = MAX_LUNS;
711c1d91 405 host->unique_id = host->host_no;
2c3dfe3f
SJ		 406 host->max_id = MAX_TARGETS_2200;
407 host->transportt = qla2xxx_transport_vport_template;
408
409 DEBUG15(printk("DEBUG: detect vport hba %ld at address = %p\n",
410 vha->host_no, vha));
411
412 vha->flags.init_done = 1;
2c3dfe3f 413
0d6e61bc
AV		 414 mutex_lock(&ha->vport_lock);
415 set_bit(vha->vp_idx, ha->vp_idx_map);
416 ha->cur_vport_count++;
417 mutex_unlock(&ha->vport_lock);
418
2c3dfe3f
SJ		 419 return vha;
420
7b867cf7 421create_vhost_failed:
2c3dfe3f
SJ		 422 return NULL;
423}
73208dfd
AC		 424
425static void
426qla25xx_free_req_que(struct scsi_qla_host *vha, struct req_que *req)
427{
428 struct qla_hw_data *ha = vha->hw;
429 uint16_t que_id = req->id;
430
431 dma_free_coherent(&ha->pdev->dev, (req->length + 1) *
432 sizeof(request_t), req->ring, req->dma);
433 req->ring = NULL;
434 req->dma = 0;
435 if (que_id) {
436 ha->req_q_map[que_id] = NULL;
437 mutex_lock(&ha->vport_lock);
438 clear_bit(que_id, ha->req_qid_map);
439 mutex_unlock(&ha->vport_lock);
440 }
441 kfree(req);
442 req = NULL;
443}
444
445static void
446qla25xx_free_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
447{
448 struct qla_hw_data *ha = vha->hw;
449 uint16_t que_id = rsp->id;
450
451 if (rsp->msix && rsp->msix->have_irq) {
452 free_irq(rsp->msix->vector, rsp);
453 rsp->msix->have_irq = 0;
454 rsp->msix->rsp = NULL;
455 }
456 dma_free_coherent(&ha->pdev->dev, (rsp->length + 1) *
457 sizeof(response_t), rsp->ring, rsp->dma);
458 rsp->ring = NULL;
459 rsp->dma = 0;
460 if (que_id) {
461 ha->rsp_q_map[que_id] = NULL;
462 mutex_lock(&ha->vport_lock);
463 clear_bit(que_id, ha->rsp_qid_map);
464 mutex_unlock(&ha->vport_lock);
465 }
466 kfree(rsp);
467 rsp = NULL;
468}
469
470int
471qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req)
472{
473 int ret = -1;
474
475 if (req) {
476 req->options |= BIT_0;
618a7523 477 ret = qla25xx_init_req_que(vha, req);
73208dfd
AC		 478 }
479 if (ret == QLA_SUCCESS)
480 qla25xx_free_req_que(vha, req);
481
482 return ret;
483}
484
485int
486qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
487{
488 int ret = -1;
489
490 if (rsp) {
491 rsp->options |= BIT_0;
618a7523 492 ret = qla25xx_init_rsp_que(vha, rsp);
73208dfd
AC		 493 }
494 if (ret == QLA_SUCCESS)
495 qla25xx_free_rsp_que(vha, rsp);
496
497 return ret;
498}
499
500int qla25xx_update_req_que(struct scsi_qla_host *vha, uint8_t que, uint8_t qos)
501{
502 int ret = 0;
503 struct qla_hw_data *ha = vha->hw;
504 struct req_que *req = ha->req_q_map[que];
505
506 req->options |= BIT_3;
507 req->qos = qos;
618a7523 508 ret = qla25xx_init_req_que(vha, req);
73208dfd
AC		 509 if (ret != QLA_SUCCESS)
510 DEBUG2_17(printk(KERN_WARNING "%s failed\n", __func__));
511 /* restore options bit */
512 req->options &= ~BIT_3;
513 return ret;
514}
515
516
517/* Delete all queues for a given vhost */
518int
2afa19a9 519qla25xx_delete_queues(struct scsi_qla_host *vha)
73208dfd
AC		 520{
521 int cnt, ret = 0;
522 struct req_que *req = NULL;
523 struct rsp_que *rsp = NULL;
524 struct qla_hw_data *ha = vha->hw;
525
2afa19a9
AC		 526 /* Delete request queues */
527 for (cnt = 1; cnt < ha->max_req_queues; cnt++) {
528 req = ha->req_q_map[cnt];
73208dfd 529 if (req) {
73208dfd
AC		 530 ret = qla25xx_delete_req_que(vha, req);
531 if (ret != QLA_SUCCESS) {
532 qla_printk(KERN_WARNING, ha,
2afa19a9
AC		 533 "Couldn't delete req que %d\n",
534 req->id);
73208dfd
AC		 535 return ret;
536 }
73208dfd 537 }
2afa19a9
AC		 538 }
539
540 /* Delete response queues */
541 for (cnt = 1; cnt < ha->max_rsp_queues; cnt++) {
542 rsp = ha->rsp_q_map[cnt];
543 if (rsp) {
544 ret = qla25xx_delete_rsp_que(vha, rsp);
545 if (ret != QLA_SUCCESS) {
546 qla_printk(KERN_WARNING, ha,
547 "Couldn't delete rsp que %d\n",
548 rsp->id);
549 return ret;
73208dfd
AC		 550 }
551 }
552 }
73208dfd
AC		 553 return ret;
554}
555
556int
557qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options,
2afa19a9 558 uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos)
73208dfd
AC		 559{
560 int ret = 0;
561 struct req_que *req = NULL;
562 struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
563 uint16_t que_id = 0;
08029990 564 device_reg_t __iomem *reg;
2afa19a9 565 uint32_t cnt;
73208dfd
AC		 566
567 req = kzalloc(sizeof(struct req_que), GFP_KERNEL);
568 if (req == NULL) {
569 qla_printk(KERN_WARNING, ha, "could not allocate memory"
570 "for request que\n");
571 goto que_failed;
572 }
573
574 req->length = REQUEST_ENTRY_CNT_24XX;
575 req->ring = dma_alloc_coherent(&ha->pdev->dev,
576 (req->length + 1) * sizeof(request_t),
577 &req->dma, GFP_KERNEL);
578 if (req->ring == NULL) {
579 qla_printk(KERN_WARNING, ha,
580 "Memory Allocation failed - request_ring\n");
581 goto que_failed;
582 }
583
584 mutex_lock(&ha->vport_lock);
2afa19a9
AC		 585 que_id = find_first_zero_bit(ha->req_qid_map, ha->max_req_queues);
586 if (que_id >= ha->max_req_queues) {
73208dfd
AC		 587 mutex_unlock(&ha->vport_lock);
588 qla_printk(KERN_INFO, ha, "No resources to create "
589 "additional request queue\n");
590 goto que_failed;
591 }
592 set_bit(que_id, ha->req_qid_map);
593 ha->req_q_map[que_id] = req;
594 req->rid = rid;
595 req->vp_idx = vp_idx;
596 req->qos = qos;
597
2afa19a9
AC		 598 if (rsp_que < 0)
599 req->rsp = NULL;
600 else
73208dfd
AC		 601 req->rsp = ha->rsp_q_map[rsp_que];
602 /* Use alternate PCI bus number */
603 if (MSB(req->rid))
604 options |= BIT_4;
605 /* Use alternate PCI devfn */
606 if (LSB(req->rid))
607 options |= BIT_5;
608 req->options = options;
2afa19a9
AC		 609
610 for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++)
611 req->outstanding_cmds[cnt] = NULL;
612 req->current_outstanding_cmd = 1;
613
73208dfd
AC		 614 req->ring_ptr = req->ring;
615 req->ring_index = 0;
616 req->cnt = req->length;
617 req->id = que_id;
08029990 618 reg = ISP_QUE_REG(ha, que_id);
29bdccbe 619 req->max_q_depth = ha->req_q_map[0]->max_q_depth;
73208dfd
AC		 620 mutex_unlock(&ha->vport_lock);
621
618a7523 622 ret = qla25xx_init_req_que(base_vha, req);
73208dfd
AC		 623 if (ret != QLA_SUCCESS) {
624 qla_printk(KERN_WARNING, ha, "%s failed\n", __func__);
625 mutex_lock(&ha->vport_lock);
626 clear_bit(que_id, ha->req_qid_map);
627 mutex_unlock(&ha->vport_lock);
628 goto que_failed;
629 }
630
631 return req->id;
632
633que_failed:
634 qla25xx_free_req_que(base_vha, req);
635 return 0;
636}
637
68ca949c
AC		 638static void qla_do_work(struct work_struct *work)
639{
640 struct rsp_que *rsp = container_of(work, struct rsp_que, q_work);
641 struct scsi_qla_host *vha;
642
643 vha = qla25xx_get_host(rsp);
644 qla24xx_process_response_queue(vha, rsp);
645}
646
73208dfd
AC		 647/* create response queue */
648int
649qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options,
2afa19a9 650 uint8_t vp_idx, uint16_t rid, int req)
73208dfd
AC		 651{
652 int ret = 0;
653 struct rsp_que *rsp = NULL;
654 struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
08029990
AV		 655 uint16_t que_id = 0;
656 device_reg_t __iomem *reg;
73208dfd
AC		 657
658 rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL);
659 if (rsp == NULL) {
660 qla_printk(KERN_WARNING, ha, "could not allocate memory for"
661 " response que\n");
662 goto que_failed;
663 }
664
2afa19a9 665 rsp->length = RESPONSE_ENTRY_CNT_MQ;
73208dfd
AC		 666 rsp->ring = dma_alloc_coherent(&ha->pdev->dev,
667 (rsp->length + 1) * sizeof(response_t),
668 &rsp->dma, GFP_KERNEL);
669 if (rsp->ring == NULL) {
670 qla_printk(KERN_WARNING, ha,
671 "Memory Allocation failed - response_ring\n");
672 goto que_failed;
673 }
674
675 mutex_lock(&ha->vport_lock);
2afa19a9
AC		 676 que_id = find_first_zero_bit(ha->rsp_qid_map, ha->max_rsp_queues);
677 if (que_id >= ha->max_rsp_queues) {
73208dfd
AC		 678 mutex_unlock(&ha->vport_lock);
679 qla_printk(KERN_INFO, ha, "No resources to create "
680 "additional response queue\n");
681 goto que_failed;
682 }
683 set_bit(que_id, ha->rsp_qid_map);
684
685 if (ha->flags.msix_enabled)
686 rsp->msix = &ha->msix_entries[que_id + 1];
687 else
688 qla_printk(KERN_WARNING, ha, "msix not enabled\n");
689
690 ha->rsp_q_map[que_id] = rsp;
691 rsp->rid = rid;
692 rsp->vp_idx = vp_idx;
693 rsp->hw = ha;
694 /* Use alternate PCI bus number */
695 if (MSB(rsp->rid))
696 options |= BIT_4;
697 /* Use alternate PCI devfn */
698 if (LSB(rsp->rid))
699 options |= BIT_5;
700 rsp->options = options;
73208dfd 701 rsp->id = que_id;
08029990
AV		 702 reg = ISP_QUE_REG(ha, que_id);
703 rsp->rsp_q_in = &reg->isp25mq.rsp_q_in;
704 rsp->rsp_q_out = &reg->isp25mq.rsp_q_out;
73208dfd
AC		 705 mutex_unlock(&ha->vport_lock);
706
707 ret = qla25xx_request_irq(rsp);
708 if (ret)
709 goto que_failed;
710
618a7523 711 ret = qla25xx_init_rsp_que(base_vha, rsp);
73208dfd
AC		 712 if (ret != QLA_SUCCESS) {
713 qla_printk(KERN_WARNING, ha, "%s failed\n", __func__);
714 mutex_lock(&ha->vport_lock);
715 clear_bit(que_id, ha->rsp_qid_map);
716 mutex_unlock(&ha->vport_lock);
717 goto que_failed;
718 }
2afa19a9
AC		 719 if (req >= 0)
720 rsp->req = ha->req_q_map[req];
721 else
722 rsp->req = NULL;
73208dfd
AC		 723
724 qla2x00_init_response_q_entries(rsp);
68ca949c
AC		 725 if (rsp->hw->wq)
726 INIT_WORK(&rsp->q_work, qla_do_work);
73208dfd
AC		 727 return rsp->id;
728
729que_failed:
730 qla25xx_free_rsp_que(base_vha, rsp);
731 return 0;
732}
733
734int
735qla25xx_create_queues(struct scsi_qla_host *vha, uint8_t qos)
736{
737 uint16_t options = 0;
738 uint8_t ret = 0;
739 struct qla_hw_data *ha = vha->hw;
2afa19a9 740 struct rsp_que *rsp;
73208dfd
AC		 741
742 options |= BIT_1;
2afa19a9 743 ret = qla25xx_create_rsp_que(ha, options, vha->vp_idx, 0, -1);
73208dfd
AC		 744 if (!ret) {
745 qla_printk(KERN_WARNING, ha, "Response Que create failed\n");
746 return ret;
747 } else
748 qla_printk(KERN_INFO, ha, "Response Que:%d created.\n", ret);
2afa19a9 749 rsp = ha->rsp_q_map[ret];
73208dfd
AC		 750
751 options = 0;
752 if (qos & BIT_7)
753 options |= BIT_8;
754 ret = qla25xx_create_req_que(ha, options, vha->vp_idx, 0, ret,
755 qos & ~BIT_7);
756 if (ret) {
2afa19a9 757 vha->req = ha->req_q_map[ret];
73208dfd
AC		 758 qla_printk(KERN_INFO, ha, "Request Que:%d created.\n", ret);
759 } else
760 qla_printk(KERN_WARNING, ha, "Request Que create failed\n");
2afa19a9 761 rsp->req = ha->req_q_map[ret];
73208dfd
AC		 762
763 return ret;
764}
Linux 6.x block layer and io_uring tree(s)