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Merge branch 'irq-cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / scsi / be2iscsi / be_main.c
blob79cefbe31367cb5a1823907ff9266b7da96cedf5
1 /**
2 * Copyright (C) 2005 - 2010 ServerEngines
3 * All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation. The full GNU General
8 * Public License is included in this distribution in the file called COPYING.
9 *
10 * Written by: Jayamohan Kallickal (jayamohank@serverengines.com)
11 *
12 * Contact Information:
13 * linux-drivers@serverengines.com
14 *
15 * ServerEngines
16 * 209 N. Fair Oaks Ave
17 * Sunnyvale, CA 94085
18 *
19 */
20 #include <linux/reboot.h>
21 #include <linux/delay.h>
22 #include <linux/slab.h>
23 #include <linux/interrupt.h>
24 #include <linux/blkdev.h>
25 #include <linux/pci.h>
26 #include <linux/string.h>
27 #include <linux/kernel.h>
28 #include <linux/semaphore.h>
29 #include <linux/iscsi_boot_sysfs.h>
30
31 #include <scsi/libiscsi.h>
32 #include <scsi/scsi_transport_iscsi.h>
33 #include <scsi/scsi_transport.h>
34 #include <scsi/scsi_cmnd.h>
35 #include <scsi/scsi_device.h>
36 #include <scsi/scsi_host.h>
37 #include <scsi/scsi.h>
38 #include "be_main.h"
39 #include "be_iscsi.h"
40 #include "be_mgmt.h"
41
42 static unsigned int be_iopoll_budget = 10;
43 static unsigned int be_max_phys_size = 64;
44 static unsigned int enable_msix = 1;
45 static unsigned int gcrashmode = 0;
46 static unsigned int num_hba = 0;
47
48 MODULE_DEVICE_TABLE(pci, beiscsi_pci_id_table);
49 MODULE_DESCRIPTION(DRV_DESC " " BUILD_STR);
50 MODULE_AUTHOR("ServerEngines Corporation");
51 MODULE_LICENSE("GPL");
52 module_param(be_iopoll_budget, int, 0);
53 module_param(enable_msix, int, 0);
54 module_param(be_max_phys_size, uint, S_IRUGO);
55 MODULE_PARM_DESC(be_max_phys_size, "Maximum Size (In Kilobytes) of physically"
56 "contiguous memory that can be allocated."
57 "Range is 16 - 128");
58
59 static int beiscsi_slave_configure(struct scsi_device *sdev)
60 {
61 blk_queue_max_segment_size(sdev->request_queue, 65536);
62 return 0;
63 }
64
65 static int beiscsi_eh_abort(struct scsi_cmnd *sc)
66 {
67 struct iscsi_cls_session *cls_session;
68 struct iscsi_task *aborted_task = (struct iscsi_task *)sc->SCp.ptr;
69 struct beiscsi_io_task *aborted_io_task;
70 struct iscsi_conn *conn;
71 struct beiscsi_conn *beiscsi_conn;
72 struct beiscsi_hba *phba;
73 struct iscsi_session *session;
74 struct invalidate_command_table *inv_tbl;
75 struct be_dma_mem nonemb_cmd;
76 unsigned int cid, tag, num_invalidate;
77
78 cls_session = starget_to_session(scsi_target(sc->device));
79 session = cls_session->dd_data;
80
81 spin_lock_bh(&session->lock);
82 if (!aborted_task || !aborted_task->sc) {
83 /* we raced */
84 spin_unlock_bh(&session->lock);
85 return SUCCESS;
86 }
87
88 aborted_io_task = aborted_task->dd_data;
89 if (!aborted_io_task->scsi_cmnd) {
90 /* raced or invalid command */
91 spin_unlock_bh(&session->lock);
92 return SUCCESS;
93 }
94 spin_unlock_bh(&session->lock);
95 conn = aborted_task->conn;
96 beiscsi_conn = conn->dd_data;
97 phba = beiscsi_conn->phba;
98
99 /* invalidate iocb */
100 cid = beiscsi_conn->beiscsi_conn_cid;
101 inv_tbl = phba->inv_tbl;
102 memset(inv_tbl, 0x0, sizeof(*inv_tbl));
103 inv_tbl->cid = cid;
104 inv_tbl->icd = aborted_io_task->psgl_handle->sgl_index;
105 num_invalidate = 1;
106 nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev,
107 sizeof(struct invalidate_commands_params_in),
108 &nonemb_cmd.dma);
109 if (nonemb_cmd.va == NULL) {
110 SE_DEBUG(DBG_LVL_1,
111 "Failed to allocate memory for"
112 "mgmt_invalidate_icds\n");
113 return FAILED;
114 }
115 nonemb_cmd.size = sizeof(struct invalidate_commands_params_in);
116
117 tag = mgmt_invalidate_icds(phba, inv_tbl, num_invalidate,
118 cid, &nonemb_cmd);
119 if (!tag) {
120 shost_printk(KERN_WARNING, phba->shost,
121 "mgmt_invalidate_icds could not be"
122 " submitted\n");
123 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
124 nonemb_cmd.va, nonemb_cmd.dma);
125
126 return FAILED;
127 } else {
128 wait_event_interruptible(phba->ctrl.mcc_wait[tag],
129 phba->ctrl.mcc_numtag[tag]);
130 free_mcc_tag(&phba->ctrl, tag);
131 }
132 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
133 nonemb_cmd.va, nonemb_cmd.dma);
134 return iscsi_eh_abort(sc);
135 }
136
137 static int beiscsi_eh_device_reset(struct scsi_cmnd *sc)
138 {
139 struct iscsi_task *abrt_task;
140 struct beiscsi_io_task *abrt_io_task;
141 struct iscsi_conn *conn;
142 struct beiscsi_conn *beiscsi_conn;
143 struct beiscsi_hba *phba;
144 struct iscsi_session *session;
145 struct iscsi_cls_session *cls_session;
146 struct invalidate_command_table *inv_tbl;
147 struct be_dma_mem nonemb_cmd;
148 unsigned int cid, tag, i, num_invalidate;
149 int rc = FAILED;
150
151 /* invalidate iocbs */
152 cls_session = starget_to_session(scsi_target(sc->device));
153 session = cls_session->dd_data;
154 spin_lock_bh(&session->lock);
155 if (!session->leadconn || session->state != ISCSI_STATE_LOGGED_IN)
156 goto unlock;
157
158 conn = session->leadconn;
159 beiscsi_conn = conn->dd_data;
160 phba = beiscsi_conn->phba;
161 cid = beiscsi_conn->beiscsi_conn_cid;
162 inv_tbl = phba->inv_tbl;
163 memset(inv_tbl, 0x0, sizeof(*inv_tbl) * BE2_CMDS_PER_CXN);
164 num_invalidate = 0;
165 for (i = 0; i < conn->session->cmds_max; i++) {
166 abrt_task = conn->session->cmds[i];
167 abrt_io_task = abrt_task->dd_data;
168 if (!abrt_task->sc || abrt_task->state == ISCSI_TASK_FREE)
169 continue;
170
171 if (abrt_task->sc->device->lun != abrt_task->sc->device->lun)
172 continue;
173
174 inv_tbl->cid = cid;
175 inv_tbl->icd = abrt_io_task->psgl_handle->sgl_index;
176 num_invalidate++;
177 inv_tbl++;
178 }
179 spin_unlock_bh(&session->lock);
180 inv_tbl = phba->inv_tbl;
181
182 nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev,
183 sizeof(struct invalidate_commands_params_in),
184 &nonemb_cmd.dma);
185 if (nonemb_cmd.va == NULL) {
186 SE_DEBUG(DBG_LVL_1,
187 "Failed to allocate memory for"
188 "mgmt_invalidate_icds\n");
189 return FAILED;
190 }
191 nonemb_cmd.size = sizeof(struct invalidate_commands_params_in);
192 memset(nonemb_cmd.va, 0, nonemb_cmd.size);
193 tag = mgmt_invalidate_icds(phba, inv_tbl, num_invalidate,
194 cid, &nonemb_cmd);
195 if (!tag) {
196 shost_printk(KERN_WARNING, phba->shost,
197 "mgmt_invalidate_icds could not be"
198 " submitted\n");
199 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
200 nonemb_cmd.va, nonemb_cmd.dma);
201 return FAILED;
202 } else {
203 wait_event_interruptible(phba->ctrl.mcc_wait[tag],
204 phba->ctrl.mcc_numtag[tag]);
205 free_mcc_tag(&phba->ctrl, tag);
206 }
207 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
208 nonemb_cmd.va, nonemb_cmd.dma);
209 return iscsi_eh_device_reset(sc);
210 unlock:
211 spin_unlock_bh(&session->lock);
212 return rc;
213 }
214
215 static ssize_t beiscsi_show_boot_tgt_info(void *data, int type, char *buf)
216 {
217 struct beiscsi_hba *phba = data;
218 char *str = buf;
219 int rc;
220
221 switch (type) {
222 case ISCSI_BOOT_TGT_NAME:
223 rc = sprintf(buf, "%.*s\n",
224 (int)strlen(phba->boot_sess.target_name),
225 (char *)&phba->boot_sess.target_name);
226 break;
227 case ISCSI_BOOT_TGT_IP_ADDR:
228 if (phba->boot_sess.conn_list[0].dest_ipaddr.ip_type == 0x1)
229 rc = sprintf(buf, "%pI4\n",
230 (char *)&phba->boot_sess.conn_list[0].
231 dest_ipaddr.ip_address);
232 else
233 rc = sprintf(str, "%pI6\n",
234 (char *)&phba->boot_sess.conn_list[0].
235 dest_ipaddr.ip_address);
236 break;
237 case ISCSI_BOOT_TGT_PORT:
238 rc = sprintf(str, "%d\n", phba->boot_sess.conn_list[0].
239 dest_port);
240 break;
241
242 case ISCSI_BOOT_TGT_CHAP_NAME:
243 rc = sprintf(str, "%.*s\n",
244 phba->boot_sess.conn_list[0].
245 negotiated_login_options.auth_data.chap.
246 target_chap_name_length,
247 (char *)&phba->boot_sess.conn_list[0].
248 negotiated_login_options.auth_data.chap.
249 target_chap_name);
250 break;
251 case ISCSI_BOOT_TGT_CHAP_SECRET:
252 rc = sprintf(str, "%.*s\n",
253 phba->boot_sess.conn_list[0].
254 negotiated_login_options.auth_data.chap.
255 target_secret_length,
256 (char *)&phba->boot_sess.conn_list[0].
257 negotiated_login_options.auth_data.chap.
258 target_secret);
259
260 break;
261 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
262 rc = sprintf(str, "%.*s\n",
263 phba->boot_sess.conn_list[0].
264 negotiated_login_options.auth_data.chap.
265 intr_chap_name_length,
266 (char *)&phba->boot_sess.conn_list[0].
267 negotiated_login_options.auth_data.chap.
268 intr_chap_name);
269
270 break;
271 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
272 rc = sprintf(str, "%.*s\n",
273 phba->boot_sess.conn_list[0].
274 negotiated_login_options.auth_data.chap.
275 intr_secret_length,
276 (char *)&phba->boot_sess.conn_list[0].
277 negotiated_login_options.auth_data.chap.
278 intr_secret);
279 break;
280 case ISCSI_BOOT_TGT_FLAGS:
281 rc = sprintf(str, "2\n");
282 break;
283 case ISCSI_BOOT_TGT_NIC_ASSOC:
284 rc = sprintf(str, "0\n");
285 break;
286 default:
287 rc = -ENOSYS;
288 break;
289 }
290 return rc;
291 }
292
293 static ssize_t beiscsi_show_boot_ini_info(void *data, int type, char *buf)
294 {
295 struct beiscsi_hba *phba = data;
296 char *str = buf;
297 int rc;
298
299 switch (type) {
300 case ISCSI_BOOT_INI_INITIATOR_NAME:
301 rc = sprintf(str, "%s\n", phba->boot_sess.initiator_iscsiname);
302 break;
303 default:
304 rc = -ENOSYS;
305 break;
306 }
307 return rc;
308 }
309
310 static ssize_t beiscsi_show_boot_eth_info(void *data, int type, char *buf)
311 {
312 struct beiscsi_hba *phba = data;
313 char *str = buf;
314 int rc;
315
316 switch (type) {
317 case ISCSI_BOOT_ETH_FLAGS:
318 rc = sprintf(str, "2\n");
319 break;
320 case ISCSI_BOOT_ETH_INDEX:
321 rc = sprintf(str, "0\n");
322 break;
323 case ISCSI_BOOT_ETH_MAC:
324 rc = beiscsi_get_macaddr(buf, phba);
325 if (rc < 0) {
326 SE_DEBUG(DBG_LVL_1, "beiscsi_get_macaddr Failed\n");
327 return rc;
328 }
329 break;
330 default:
331 rc = -ENOSYS;
332 break;
333 }
334 return rc;
335 }
336
337
338 static mode_t beiscsi_tgt_get_attr_visibility(void *data, int type)
339 {
340 int rc;
341
342 switch (type) {
343 case ISCSI_BOOT_TGT_NAME:
344 case ISCSI_BOOT_TGT_IP_ADDR:
345 case ISCSI_BOOT_TGT_PORT:
346 case ISCSI_BOOT_TGT_CHAP_NAME:
347 case ISCSI_BOOT_TGT_CHAP_SECRET:
348 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
349 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
350 case ISCSI_BOOT_TGT_NIC_ASSOC:
351 case ISCSI_BOOT_TGT_FLAGS:
352 rc = S_IRUGO;
353 break;
354 default:
355 rc = 0;
356 break;
357 }
358 return rc;
359 }
360
361 static mode_t beiscsi_ini_get_attr_visibility(void *data, int type)
362 {
363 int rc;
364
365 switch (type) {
366 case ISCSI_BOOT_INI_INITIATOR_NAME:
367 rc = S_IRUGO;
368 break;
369 default:
370 rc = 0;
371 break;
372 }
373 return rc;
374 }
375
376
377 static mode_t beiscsi_eth_get_attr_visibility(void *data, int type)
378 {
379 int rc;
380
381 switch (type) {
382 case ISCSI_BOOT_ETH_FLAGS:
383 case ISCSI_BOOT_ETH_MAC:
384 case ISCSI_BOOT_ETH_INDEX:
385 rc = S_IRUGO;
386 break;
387 default:
388 rc = 0;
389 break;
390 }
391 return rc;
392 }
393
394 static int beiscsi_setup_boot_info(struct beiscsi_hba *phba)
395 {
396 struct iscsi_boot_kobj *boot_kobj;
397
398 phba->boot_kset = iscsi_boot_create_host_kset(phba->shost->host_no);
399 if (!phba->boot_kset)
400 return -ENOMEM;
401
402 /* get boot info using mgmt cmd */
403 boot_kobj = iscsi_boot_create_target(phba->boot_kset, 0, phba,
404 beiscsi_show_boot_tgt_info,
405 beiscsi_tgt_get_attr_visibility);
406 if (!boot_kobj)
407 goto free_kset;
408
409 boot_kobj = iscsi_boot_create_initiator(phba->boot_kset, 0, phba,
410 beiscsi_show_boot_ini_info,
411 beiscsi_ini_get_attr_visibility);
412 if (!boot_kobj)
413 goto free_kset;
414
415 boot_kobj = iscsi_boot_create_ethernet(phba->boot_kset, 0, phba,
416 beiscsi_show_boot_eth_info,
417 beiscsi_eth_get_attr_visibility);
418 if (!boot_kobj)
419 goto free_kset;
420 return 0;
421
422 free_kset:
423 iscsi_boot_destroy_kset(phba->boot_kset);
424 return -ENOMEM;
425 }
426
427 /*------------------- PCI Driver operations and data ----------------- */
428 static DEFINE_PCI_DEVICE_TABLE(beiscsi_pci_id_table) = {
429 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
430 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID2) },
431 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
432 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
433 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID3) },
434 { 0 }
435 };
436 MODULE_DEVICE_TABLE(pci, beiscsi_pci_id_table);
437
438 static struct scsi_host_template beiscsi_sht = {
439 .module = THIS_MODULE,
440 .name = "ServerEngines 10Gbe open-iscsi Initiator Driver",
441 .proc_name = DRV_NAME,
442 .queuecommand = iscsi_queuecommand,
443 .change_queue_depth = iscsi_change_queue_depth,
444 .slave_configure = beiscsi_slave_configure,
445 .target_alloc = iscsi_target_alloc,
446 .eh_abort_handler = beiscsi_eh_abort,
447 .eh_device_reset_handler = beiscsi_eh_device_reset,
448 .eh_target_reset_handler = iscsi_eh_session_reset,
449 .sg_tablesize = BEISCSI_SGLIST_ELEMENTS,
450 .can_queue = BE2_IO_DEPTH,
451 .this_id = -1,
452 .max_sectors = BEISCSI_MAX_SECTORS,
453 .cmd_per_lun = BEISCSI_CMD_PER_LUN,
454 .use_clustering = ENABLE_CLUSTERING,
455 };
456
457 static struct scsi_transport_template *beiscsi_scsi_transport;
458
459 static struct beiscsi_hba *beiscsi_hba_alloc(struct pci_dev *pcidev)
460 {
461 struct beiscsi_hba *phba;
462 struct Scsi_Host *shost;
463
464 shost = iscsi_host_alloc(&beiscsi_sht, sizeof(*phba), 0);
465 if (!shost) {
466 dev_err(&pcidev->dev, "beiscsi_hba_alloc -"
467 "iscsi_host_alloc failed\n");
468 return NULL;
469 }
470 shost->dma_boundary = pcidev->dma_mask;
471 shost->max_id = BE2_MAX_SESSIONS;
472 shost->max_channel = 0;
473 shost->max_cmd_len = BEISCSI_MAX_CMD_LEN;
474 shost->max_lun = BEISCSI_NUM_MAX_LUN;
475 shost->transportt = beiscsi_scsi_transport;
476 phba = iscsi_host_priv(shost);
477 memset(phba, 0, sizeof(*phba));
478 phba->shost = shost;
479 phba->pcidev = pci_dev_get(pcidev);
480 pci_set_drvdata(pcidev, phba);
481
482 if (iscsi_host_add(shost, &phba->pcidev->dev))
483 goto free_devices;
484
485 if (beiscsi_setup_boot_info(phba))
486 /*
487 * log error but continue, because we may not be using
488 * iscsi boot.
489 */
490 shost_printk(KERN_ERR, phba->shost, "Could not set up "
491 "iSCSI boot info.");
492
493 return phba;
494
495 free_devices:
496 pci_dev_put(phba->pcidev);
497 iscsi_host_free(phba->shost);
498 return NULL;
499 }
500
501 static void beiscsi_unmap_pci_function(struct beiscsi_hba *phba)
502 {
503 if (phba->csr_va) {
504 iounmap(phba->csr_va);
505 phba->csr_va = NULL;
506 }
507 if (phba->db_va) {
508 iounmap(phba->db_va);
509 phba->db_va = NULL;
510 }
511 if (phba->pci_va) {
512 iounmap(phba->pci_va);
513 phba->pci_va = NULL;
514 }
515 }
516
517 static int beiscsi_map_pci_bars(struct beiscsi_hba *phba,
518 struct pci_dev *pcidev)
519 {
520 u8 __iomem *addr;
521 int pcicfg_reg;
522
523 addr = ioremap_nocache(pci_resource_start(pcidev, 2),
524 pci_resource_len(pcidev, 2));
525 if (addr == NULL)
526 return -ENOMEM;
527 phba->ctrl.csr = addr;
528 phba->csr_va = addr;
529 phba->csr_pa.u.a64.address = pci_resource_start(pcidev, 2);
530
531 addr = ioremap_nocache(pci_resource_start(pcidev, 4), 128 * 1024);
532 if (addr == NULL)
533 goto pci_map_err;
534 phba->ctrl.db = addr;
535 phba->db_va = addr;
536 phba->db_pa.u.a64.address = pci_resource_start(pcidev, 4);
537
538 if (phba->generation == BE_GEN2)
539 pcicfg_reg = 1;
540 else
541 pcicfg_reg = 0;
542
543 addr = ioremap_nocache(pci_resource_start(pcidev, pcicfg_reg),
544 pci_resource_len(pcidev, pcicfg_reg));
545
546 if (addr == NULL)
547 goto pci_map_err;
548 phba->ctrl.pcicfg = addr;
549 phba->pci_va = addr;
550 phba->pci_pa.u.a64.address = pci_resource_start(pcidev, pcicfg_reg);
551 return 0;
552
553 pci_map_err:
554 beiscsi_unmap_pci_function(phba);
555 return -ENOMEM;
556 }
557
558 static int beiscsi_enable_pci(struct pci_dev *pcidev)
559 {
560 int ret;
561
562 ret = pci_enable_device(pcidev);
563 if (ret) {
564 dev_err(&pcidev->dev, "beiscsi_enable_pci - enable device "
565 "failed. Returning -ENODEV\n");
566 return ret;
567 }
568
569 pci_set_master(pcidev);
570 if (pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(64))) {
571 ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(32));
572 if (ret) {
573 dev_err(&pcidev->dev, "Could not set PCI DMA Mask\n");
574 pci_disable_device(pcidev);
575 return ret;
576 }
577 }
578 return 0;
579 }
580
581 static int be_ctrl_init(struct beiscsi_hba *phba, struct pci_dev *pdev)
582 {
583 struct be_ctrl_info *ctrl = &phba->ctrl;
584 struct be_dma_mem *mbox_mem_alloc = &ctrl->mbox_mem_alloced;
585 struct be_dma_mem *mbox_mem_align = &ctrl->mbox_mem;
586 int status = 0;
587
588 ctrl->pdev = pdev;
589 status = beiscsi_map_pci_bars(phba, pdev);
590 if (status)
591 return status;
592 mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
593 mbox_mem_alloc->va = pci_alloc_consistent(pdev,
594 mbox_mem_alloc->size,
595 &mbox_mem_alloc->dma);
596 if (!mbox_mem_alloc->va) {
597 beiscsi_unmap_pci_function(phba);
598 status = -ENOMEM;
599 return status;
600 }
601
602 mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
603 mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
604 mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
605 memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
606 spin_lock_init(&ctrl->mbox_lock);
607 spin_lock_init(&phba->ctrl.mcc_lock);
608 spin_lock_init(&phba->ctrl.mcc_cq_lock);
609
610 return status;
611 }
612
613 static void beiscsi_get_params(struct beiscsi_hba *phba)
614 {
615 phba->params.ios_per_ctrl = (phba->fw_config.iscsi_icd_count
616 - (phba->fw_config.iscsi_cid_count
617 + BE2_TMFS
618 + BE2_NOPOUT_REQ));
619 phba->params.cxns_per_ctrl = phba->fw_config.iscsi_cid_count;
620 phba->params.asyncpdus_per_ctrl = phba->fw_config.iscsi_cid_count * 2;
621 phba->params.icds_per_ctrl = phba->fw_config.iscsi_icd_count;;
622 phba->params.num_sge_per_io = BE2_SGE;
623 phba->params.defpdu_hdr_sz = BE2_DEFPDU_HDR_SZ;
624 phba->params.defpdu_data_sz = BE2_DEFPDU_DATA_SZ;
625 phba->params.eq_timer = 64;
626 phba->params.num_eq_entries =
627 (((BE2_CMDS_PER_CXN * 2 + phba->fw_config.iscsi_cid_count * 2
628 + BE2_TMFS) / 512) + 1) * 512;
629 phba->params.num_eq_entries = (phba->params.num_eq_entries < 1024)
630 ? 1024 : phba->params.num_eq_entries;
631 SE_DEBUG(DBG_LVL_8, "phba->params.num_eq_entries=%d\n",
632 phba->params.num_eq_entries);
633 phba->params.num_cq_entries =
634 (((BE2_CMDS_PER_CXN * 2 + phba->fw_config.iscsi_cid_count * 2
635 + BE2_TMFS) / 512) + 1) * 512;
636 phba->params.wrbs_per_cxn = 256;
637 }
638
639 static void hwi_ring_eq_db(struct beiscsi_hba *phba,
640 unsigned int id, unsigned int clr_interrupt,
641 unsigned int num_processed,
642 unsigned char rearm, unsigned char event)
643 {
644 u32 val = 0;
645 val |= id & DB_EQ_RING_ID_MASK;
646 if (rearm)
647 val |= 1 << DB_EQ_REARM_SHIFT;
648 if (clr_interrupt)
649 val |= 1 << DB_EQ_CLR_SHIFT;
650 if (event)
651 val |= 1 << DB_EQ_EVNT_SHIFT;
652 val |= num_processed << DB_EQ_NUM_POPPED_SHIFT;
653 iowrite32(val, phba->db_va + DB_EQ_OFFSET);
654 }
655
656 /**
657 * be_isr_mcc - The isr routine of the driver.
658 * @irq: Not used
659 * @dev_id: Pointer to host adapter structure
660 */
661 static irqreturn_t be_isr_mcc(int irq, void *dev_id)
662 {
663 struct beiscsi_hba *phba;
664 struct be_eq_entry *eqe = NULL;
665 struct be_queue_info *eq;
666 struct be_queue_info *mcc;
667 unsigned int num_eq_processed;
668 struct be_eq_obj *pbe_eq;
669 unsigned long flags;
670
671 pbe_eq = dev_id;
672 eq = &pbe_eq->q;
673 phba = pbe_eq->phba;
674 mcc = &phba->ctrl.mcc_obj.cq;
675 eqe = queue_tail_node(eq);
676 if (!eqe)
677 SE_DEBUG(DBG_LVL_1, "eqe is NULL\n");
678
679 num_eq_processed = 0;
680
681 while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]
682 & EQE_VALID_MASK) {
683 if (((eqe->dw[offsetof(struct amap_eq_entry,
684 resource_id) / 32] &
685 EQE_RESID_MASK) >> 16) == mcc->id) {
686 spin_lock_irqsave(&phba->isr_lock, flags);
687 phba->todo_mcc_cq = 1;
688 spin_unlock_irqrestore(&phba->isr_lock, flags);
689 }
690 AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
691 queue_tail_inc(eq);
692 eqe = queue_tail_node(eq);
693 num_eq_processed++;
694 }
695 if (phba->todo_mcc_cq)
696 queue_work(phba->wq, &phba->work_cqs);
697 if (num_eq_processed)
698 hwi_ring_eq_db(phba, eq->id, 1, num_eq_processed, 1, 1);
699
700 return IRQ_HANDLED;
701 }
702
703 /**
704 * be_isr_msix - The isr routine of the driver.
705 * @irq: Not used
706 * @dev_id: Pointer to host adapter structure
707 */
708 static irqreturn_t be_isr_msix(int irq, void *dev_id)
709 {
710 struct beiscsi_hba *phba;
711 struct be_eq_entry *eqe = NULL;
712 struct be_queue_info *eq;
713 struct be_queue_info *cq;
714 unsigned int num_eq_processed;
715 struct be_eq_obj *pbe_eq;
716 unsigned long flags;
717
718 pbe_eq = dev_id;
719 eq = &pbe_eq->q;
720 cq = pbe_eq->cq;
721 eqe = queue_tail_node(eq);
722 if (!eqe)
723 SE_DEBUG(DBG_LVL_1, "eqe is NULL\n");
724
725 phba = pbe_eq->phba;
726 num_eq_processed = 0;
727 if (blk_iopoll_enabled) {
728 while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]
729 & EQE_VALID_MASK) {
730 if (!blk_iopoll_sched_prep(&pbe_eq->iopoll))
731 blk_iopoll_sched(&pbe_eq->iopoll);
732
733 AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
734 queue_tail_inc(eq);
735 eqe = queue_tail_node(eq);
736 num_eq_processed++;
737 }
738 if (num_eq_processed)
739 hwi_ring_eq_db(phba, eq->id, 1, num_eq_processed, 0, 1);
740
741 return IRQ_HANDLED;
742 } else {
743 while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]
744 & EQE_VALID_MASK) {
745 spin_lock_irqsave(&phba->isr_lock, flags);
746 phba->todo_cq = 1;
747 spin_unlock_irqrestore(&phba->isr_lock, flags);
748 AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
749 queue_tail_inc(eq);
750 eqe = queue_tail_node(eq);
751 num_eq_processed++;
752 }
753 if (phba->todo_cq)
754 queue_work(phba->wq, &phba->work_cqs);
755
756 if (num_eq_processed)
757 hwi_ring_eq_db(phba, eq->id, 1, num_eq_processed, 1, 1);
758
759 return IRQ_HANDLED;
760 }
761 }
762
763 /**
764 * be_isr - The isr routine of the driver.
765 * @irq: Not used
766 * @dev_id: Pointer to host adapter structure
767 */
768 static irqreturn_t be_isr(int irq, void *dev_id)
769 {
770 struct beiscsi_hba *phba;
771 struct hwi_controller *phwi_ctrlr;
772 struct hwi_context_memory *phwi_context;
773 struct be_eq_entry *eqe = NULL;
774 struct be_queue_info *eq;
775 struct be_queue_info *cq;
776 struct be_queue_info *mcc;
777 unsigned long flags, index;
778 unsigned int num_mcceq_processed, num_ioeq_processed;
779 struct be_ctrl_info *ctrl;
780 struct be_eq_obj *pbe_eq;
781 int isr;
782
783 phba = dev_id;
784 ctrl = &phba->ctrl;;
785 isr = ioread32(ctrl->csr + CEV_ISR0_OFFSET +
786 (PCI_FUNC(ctrl->pdev->devfn) * CEV_ISR_SIZE));
787 if (!isr)
788 return IRQ_NONE;
789
790 phwi_ctrlr = phba->phwi_ctrlr;
791 phwi_context = phwi_ctrlr->phwi_ctxt;
792 pbe_eq = &phwi_context->be_eq[0];
793
794 eq = &phwi_context->be_eq[0].q;
795 mcc = &phba->ctrl.mcc_obj.cq;
796 index = 0;
797 eqe = queue_tail_node(eq);
798 if (!eqe)
799 SE_DEBUG(DBG_LVL_1, "eqe is NULL\n");
800
801 num_ioeq_processed = 0;
802 num_mcceq_processed = 0;
803 if (blk_iopoll_enabled) {
804 while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]
805 & EQE_VALID_MASK) {
806 if (((eqe->dw[offsetof(struct amap_eq_entry,
807 resource_id) / 32] &
808 EQE_RESID_MASK) >> 16) == mcc->id) {
809 spin_lock_irqsave(&phba->isr_lock, flags);
810 phba->todo_mcc_cq = 1;
811 spin_unlock_irqrestore(&phba->isr_lock, flags);
812 num_mcceq_processed++;
813 } else {
814 if (!blk_iopoll_sched_prep(&pbe_eq->iopoll))
815 blk_iopoll_sched(&pbe_eq->iopoll);
816 num_ioeq_processed++;
817 }
818 AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
819 queue_tail_inc(eq);
820 eqe = queue_tail_node(eq);
821 }
822 if (num_ioeq_processed || num_mcceq_processed) {
823 if (phba->todo_mcc_cq)
824 queue_work(phba->wq, &phba->work_cqs);
825
826 if ((num_mcceq_processed) && (!num_ioeq_processed))
827 hwi_ring_eq_db(phba, eq->id, 0,
828 (num_ioeq_processed +
829 num_mcceq_processed) , 1, 1);
830 else
831 hwi_ring_eq_db(phba, eq->id, 0,
832 (num_ioeq_processed +
833 num_mcceq_processed), 0, 1);
834
835 return IRQ_HANDLED;
836 } else
837 return IRQ_NONE;
838 } else {
839 cq = &phwi_context->be_cq[0];
840 while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]
841 & EQE_VALID_MASK) {
842
843 if (((eqe->dw[offsetof(struct amap_eq_entry,
844 resource_id) / 32] &
845 EQE_RESID_MASK) >> 16) != cq->id) {
846 spin_lock_irqsave(&phba->isr_lock, flags);
847 phba->todo_mcc_cq = 1;
848 spin_unlock_irqrestore(&phba->isr_lock, flags);
849 } else {
850 spin_lock_irqsave(&phba->isr_lock, flags);
851 phba->todo_cq = 1;
852 spin_unlock_irqrestore(&phba->isr_lock, flags);
853 }
854 AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
855 queue_tail_inc(eq);
856 eqe = queue_tail_node(eq);
857 num_ioeq_processed++;
858 }
859 if (phba->todo_cq || phba->todo_mcc_cq)
860 queue_work(phba->wq, &phba->work_cqs);
861
862 if (num_ioeq_processed) {
863 hwi_ring_eq_db(phba, eq->id, 0,
864 num_ioeq_processed, 1, 1);
865 return IRQ_HANDLED;
866 } else
867 return IRQ_NONE;
868 }
869 }
870
871 static int beiscsi_init_irqs(struct beiscsi_hba *phba)
872 {
873 struct pci_dev *pcidev = phba->pcidev;
874 struct hwi_controller *phwi_ctrlr;
875 struct hwi_context_memory *phwi_context;
876 int ret, msix_vec, i, j;
877 char desc[32];
878
879 phwi_ctrlr = phba->phwi_ctrlr;
880 phwi_context = phwi_ctrlr->phwi_ctxt;
881
882 if (phba->msix_enabled) {
883 for (i = 0; i < phba->num_cpus; i++) {
884 sprintf(desc, "beiscsi_msix_%04x", i);
885 msix_vec = phba->msix_entries[i].vector;
886 ret = request_irq(msix_vec, be_isr_msix, 0, desc,
887 &phwi_context->be_eq[i]);
888 if (ret) {
889 shost_printk(KERN_ERR, phba->shost,
890 "beiscsi_init_irqs-Failed to"
891 "register msix for i = %d\n", i);
892 if (!i)
893 return ret;
894 goto free_msix_irqs;
895 }
896 }
897 msix_vec = phba->msix_entries[i].vector;
898 ret = request_irq(msix_vec, be_isr_mcc, 0, "beiscsi_msix_mcc",
899 &phwi_context->be_eq[i]);
900 if (ret) {
901 shost_printk(KERN_ERR, phba->shost, "beiscsi_init_irqs-"
902 "Failed to register beiscsi_msix_mcc\n");
903 i++;
904 goto free_msix_irqs;
905 }
906
907 } else {
908 ret = request_irq(pcidev->irq, be_isr, IRQF_SHARED,
909 "beiscsi", phba);
910 if (ret) {
911 shost_printk(KERN_ERR, phba->shost, "beiscsi_init_irqs-"
912 "Failed to register irq\\n");
913 return ret;
914 }
915 }
916 return 0;
917 free_msix_irqs:
918 for (j = i - 1; j == 0; j++)
919 free_irq(msix_vec, &phwi_context->be_eq[j]);
920 return ret;
921 }
922
923 static void hwi_ring_cq_db(struct beiscsi_hba *phba,
924 unsigned int id, unsigned int num_processed,
925 unsigned char rearm, unsigned char event)
926 {
927 u32 val = 0;
928 val |= id & DB_CQ_RING_ID_MASK;
929 if (rearm)
930 val |= 1 << DB_CQ_REARM_SHIFT;
931 val |= num_processed << DB_CQ_NUM_POPPED_SHIFT;
932 iowrite32(val, phba->db_va + DB_CQ_OFFSET);
933 }
934
935 static unsigned int
936 beiscsi_process_async_pdu(struct beiscsi_conn *beiscsi_conn,
937 struct beiscsi_hba *phba,
938 unsigned short cid,
939 struct pdu_base *ppdu,
940 unsigned long pdu_len,
941 void *pbuffer, unsigned long buf_len)
942 {
943 struct iscsi_conn *conn = beiscsi_conn->conn;
944 struct iscsi_session *session = conn->session;
945 struct iscsi_task *task;
946 struct beiscsi_io_task *io_task;
947 struct iscsi_hdr *login_hdr;
948
949 switch (ppdu->dw[offsetof(struct amap_pdu_base, opcode) / 32] &
950 PDUBASE_OPCODE_MASK) {
951 case ISCSI_OP_NOOP_IN:
952 pbuffer = NULL;
953 buf_len = 0;
954 break;
955 case ISCSI_OP_ASYNC_EVENT:
956 break;
957 case ISCSI_OP_REJECT:
958 WARN_ON(!pbuffer);
959 WARN_ON(!(buf_len == 48));
960 SE_DEBUG(DBG_LVL_1, "In ISCSI_OP_REJECT\n");
961 break;
962 case ISCSI_OP_LOGIN_RSP:
963 case ISCSI_OP_TEXT_RSP:
964 task = conn->login_task;
965 io_task = task->dd_data;
966 login_hdr = (struct iscsi_hdr *)ppdu;
967 login_hdr->itt = io_task->libiscsi_itt;
968 break;
969 default:
970 shost_printk(KERN_WARNING, phba->shost,
971 "Unrecognized opcode 0x%x in async msg\n",
972 (ppdu->
973 dw[offsetof(struct amap_pdu_base, opcode) / 32]
974 & PDUBASE_OPCODE_MASK));
975 return 1;
976 }
977
978 spin_lock_bh(&session->lock);
979 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)ppdu, pbuffer, buf_len);
980 spin_unlock_bh(&session->lock);
981 return 0;
982 }
983
984 static struct sgl_handle *alloc_io_sgl_handle(struct beiscsi_hba *phba)
985 {
986 struct sgl_handle *psgl_handle;
987
988 if (phba->io_sgl_hndl_avbl) {
989 SE_DEBUG(DBG_LVL_8,
990 "In alloc_io_sgl_handle,io_sgl_alloc_index=%d\n",
991 phba->io_sgl_alloc_index);
992 psgl_handle = phba->io_sgl_hndl_base[phba->
993 io_sgl_alloc_index];
994 phba->io_sgl_hndl_base[phba->io_sgl_alloc_index] = NULL;
995 phba->io_sgl_hndl_avbl--;
996 if (phba->io_sgl_alloc_index == (phba->params.
997 ios_per_ctrl - 1))
998 phba->io_sgl_alloc_index = 0;
999 else
1000 phba->io_sgl_alloc_index++;
1001 } else
1002 psgl_handle = NULL;
1003 return psgl_handle;
1004 }
1005
1006 static void
1007 free_io_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle)
1008 {
1009 SE_DEBUG(DBG_LVL_8, "In free_,io_sgl_free_index=%d\n",
1010 phba->io_sgl_free_index);
1011 if (phba->io_sgl_hndl_base[phba->io_sgl_free_index]) {
1012 /*
1013 * this can happen if clean_task is called on a task that
1014 * failed in xmit_task or alloc_pdu.
1015 */
1016 SE_DEBUG(DBG_LVL_8,
1017 "Double Free in IO SGL io_sgl_free_index=%d,"
1018 "value there=%p\n", phba->io_sgl_free_index,
1019 phba->io_sgl_hndl_base[phba->io_sgl_free_index]);
1020 return;
1021 }
1022 phba->io_sgl_hndl_base[phba->io_sgl_free_index] = psgl_handle;
1023 phba->io_sgl_hndl_avbl++;
1024 if (phba->io_sgl_free_index == (phba->params.ios_per_ctrl - 1))
1025 phba->io_sgl_free_index = 0;
1026 else
1027 phba->io_sgl_free_index++;
1028 }
1029
1030 /**
1031 * alloc_wrb_handle - To allocate a wrb handle
1032 * @phba: The hba pointer
1033 * @cid: The cid to use for allocation
1034 *
1035 * This happens under session_lock until submission to chip
1036 */
1037 struct wrb_handle *alloc_wrb_handle(struct beiscsi_hba *phba, unsigned int cid)
1038 {
1039 struct hwi_wrb_context *pwrb_context;
1040 struct hwi_controller *phwi_ctrlr;
1041 struct wrb_handle *pwrb_handle, *pwrb_handle_tmp;
1042
1043 phwi_ctrlr = phba->phwi_ctrlr;
1044 pwrb_context = &phwi_ctrlr->wrb_context[cid];
1045 if (pwrb_context->wrb_handles_available >= 2) {
1046 pwrb_handle = pwrb_context->pwrb_handle_base[
1047 pwrb_context->alloc_index];
1048 pwrb_context->wrb_handles_available--;
1049 if (pwrb_context->alloc_index ==
1050 (phba->params.wrbs_per_cxn - 1))
1051 pwrb_context->alloc_index = 0;
1052 else
1053 pwrb_context->alloc_index++;
1054 pwrb_handle_tmp = pwrb_context->pwrb_handle_base[
1055 pwrb_context->alloc_index];
1056 pwrb_handle->nxt_wrb_index = pwrb_handle_tmp->wrb_index;
1057 } else
1058 pwrb_handle = NULL;
1059 return pwrb_handle;
1060 }
1061
1062 /**
1063 * free_wrb_handle - To free the wrb handle back to pool
1064 * @phba: The hba pointer
1065 * @pwrb_context: The context to free from
1066 * @pwrb_handle: The wrb_handle to free
1067 *
1068 * This happens under session_lock until submission to chip
1069 */
1070 static void
1071 free_wrb_handle(struct beiscsi_hba *phba, struct hwi_wrb_context *pwrb_context,
1072 struct wrb_handle *pwrb_handle)
1073 {
1074 pwrb_context->pwrb_handle_base[pwrb_context->free_index] = pwrb_handle;
1075 pwrb_context->wrb_handles_available++;
1076 if (pwrb_context->free_index == (phba->params.wrbs_per_cxn - 1))
1077 pwrb_context->free_index = 0;
1078 else
1079 pwrb_context->free_index++;
1080
1081 SE_DEBUG(DBG_LVL_8,
1082 "FREE WRB: pwrb_handle=%p free_index=0x%x"
1083 "wrb_handles_available=%d\n",
1084 pwrb_handle, pwrb_context->free_index,
1085 pwrb_context->wrb_handles_available);
1086 }
1087
1088 static struct sgl_handle *alloc_mgmt_sgl_handle(struct beiscsi_hba *phba)
1089 {
1090 struct sgl_handle *psgl_handle;
1091
1092 if (phba->eh_sgl_hndl_avbl) {
1093 psgl_handle = phba->eh_sgl_hndl_base[phba->eh_sgl_alloc_index];
1094 phba->eh_sgl_hndl_base[phba->eh_sgl_alloc_index] = NULL;
1095 SE_DEBUG(DBG_LVL_8, "mgmt_sgl_alloc_index=%d=0x%x\n",
1096 phba->eh_sgl_alloc_index, phba->eh_sgl_alloc_index);
1097 phba->eh_sgl_hndl_avbl--;
1098 if (phba->eh_sgl_alloc_index ==
1099 (phba->params.icds_per_ctrl - phba->params.ios_per_ctrl -
1100 1))
1101 phba->eh_sgl_alloc_index = 0;
1102 else
1103 phba->eh_sgl_alloc_index++;
1104 } else
1105 psgl_handle = NULL;
1106 return psgl_handle;
1107 }
1108
1109 void
1110 free_mgmt_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle)
1111 {
1112
1113 SE_DEBUG(DBG_LVL_8, "In free_mgmt_sgl_handle,eh_sgl_free_index=%d\n",
1114 phba->eh_sgl_free_index);
1115 if (phba->eh_sgl_hndl_base[phba->eh_sgl_free_index]) {
1116 /*
1117 * this can happen if clean_task is called on a task that
1118 * failed in xmit_task or alloc_pdu.
1119 */
1120 SE_DEBUG(DBG_LVL_8,
1121 "Double Free in eh SGL ,eh_sgl_free_index=%d\n",
1122 phba->eh_sgl_free_index);
1123 return;
1124 }
1125 phba->eh_sgl_hndl_base[phba->eh_sgl_free_index] = psgl_handle;
1126 phba->eh_sgl_hndl_avbl++;
1127 if (phba->eh_sgl_free_index ==
1128 (phba->params.icds_per_ctrl - phba->params.ios_per_ctrl - 1))
1129 phba->eh_sgl_free_index = 0;
1130 else
1131 phba->eh_sgl_free_index++;
1132 }
1133
1134 static void
1135 be_complete_io(struct beiscsi_conn *beiscsi_conn,
1136 struct iscsi_task *task, struct sol_cqe *psol)
1137 {
1138 struct beiscsi_io_task *io_task = task->dd_data;
1139 struct be_status_bhs *sts_bhs =
1140 (struct be_status_bhs *)io_task->cmd_bhs;
1141 struct iscsi_conn *conn = beiscsi_conn->conn;
1142 unsigned int sense_len;
1143 unsigned char *sense;
1144 u32 resid = 0, exp_cmdsn, max_cmdsn;
1145 u8 rsp, status, flags;
1146
1147 exp_cmdsn = (psol->
1148 dw[offsetof(struct amap_sol_cqe, i_exp_cmd_sn) / 32]
1149 & SOL_EXP_CMD_SN_MASK);
1150 max_cmdsn = ((psol->
1151 dw[offsetof(struct amap_sol_cqe, i_exp_cmd_sn) / 32]
1152 & SOL_EXP_CMD_SN_MASK) +
1153 ((psol->dw[offsetof(struct amap_sol_cqe, i_cmd_wnd)
1154 / 32] & SOL_CMD_WND_MASK) >> 24) - 1);
1155 rsp = ((psol->dw[offsetof(struct amap_sol_cqe, i_resp) / 32]
1156 & SOL_RESP_MASK) >> 16);
1157 status = ((psol->dw[offsetof(struct amap_sol_cqe, i_sts) / 32]
1158 & SOL_STS_MASK) >> 8);
1159 flags = ((psol->dw[offsetof(struct amap_sol_cqe, i_flags) / 32]
1160 & SOL_FLAGS_MASK) >> 24) | 0x80;
1161
1162 task->sc->result = (DID_OK << 16) | status;
1163 if (rsp != ISCSI_STATUS_CMD_COMPLETED) {
1164 task->sc->result = DID_ERROR << 16;
1165 goto unmap;
1166 }
1167
1168 /* bidi not initially supported */
1169 if (flags & (ISCSI_FLAG_CMD_UNDERFLOW | ISCSI_FLAG_CMD_OVERFLOW)) {
1170 resid = (psol->dw[offsetof(struct amap_sol_cqe, i_res_cnt) /
1171 32] & SOL_RES_CNT_MASK);
1172
1173 if (!status && (flags & ISCSI_FLAG_CMD_OVERFLOW))
1174 task->sc->result = DID_ERROR << 16;
1175
1176 if (flags & ISCSI_FLAG_CMD_UNDERFLOW) {
1177 scsi_set_resid(task->sc, resid);
1178 if (!status && (scsi_bufflen(task->sc) - resid <
1179 task->sc->underflow))
1180 task->sc->result = DID_ERROR << 16;
1181 }
1182 }
1183
1184 if (status == SAM_STAT_CHECK_CONDITION) {
1185 unsigned short *slen = (unsigned short *)sts_bhs->sense_info;
1186 sense = sts_bhs->sense_info + sizeof(unsigned short);
1187 sense_len = cpu_to_be16(*slen);
1188 memcpy(task->sc->sense_buffer, sense,
1189 min_t(u16, sense_len, SCSI_SENSE_BUFFERSIZE));
1190 }
1191
1192 if (io_task->cmd_bhs->iscsi_hdr.flags & ISCSI_FLAG_CMD_READ) {
1193 if (psol->dw[offsetof(struct amap_sol_cqe, i_res_cnt) / 32]
1194 & SOL_RES_CNT_MASK)
1195 conn->rxdata_octets += (psol->
1196 dw[offsetof(struct amap_sol_cqe, i_res_cnt) / 32]
1197 & SOL_RES_CNT_MASK);
1198 }
1199 unmap:
1200 scsi_dma_unmap(io_task->scsi_cmnd);
1201 iscsi_complete_scsi_task(task, exp_cmdsn, max_cmdsn);
1202 }
1203
1204 static void
1205 be_complete_logout(struct beiscsi_conn *beiscsi_conn,
1206 struct iscsi_task *task, struct sol_cqe *psol)
1207 {
1208 struct iscsi_logout_rsp *hdr;
1209 struct beiscsi_io_task *io_task = task->dd_data;
1210 struct iscsi_conn *conn = beiscsi_conn->conn;
1211
1212 hdr = (struct iscsi_logout_rsp *)task->hdr;
1213 hdr->opcode = ISCSI_OP_LOGOUT_RSP;
1214 hdr->t2wait = 5;
1215 hdr->t2retain = 0;
1216 hdr->flags = ((psol->dw[offsetof(struct amap_sol_cqe, i_flags) / 32]
1217 & SOL_FLAGS_MASK) >> 24) | 0x80;
1218 hdr->response = (psol->dw[offsetof(struct amap_sol_cqe, i_resp) /
1219 32] & SOL_RESP_MASK);
1220 hdr->exp_cmdsn = cpu_to_be32(psol->
1221 dw[offsetof(struct amap_sol_cqe, i_exp_cmd_sn) / 32]
1222 & SOL_EXP_CMD_SN_MASK);
1223 hdr->max_cmdsn = be32_to_cpu((psol->
1224 dw[offsetof(struct amap_sol_cqe, i_exp_cmd_sn) / 32]
1225 & SOL_EXP_CMD_SN_MASK) +
1226 ((psol->dw[offsetof(struct amap_sol_cqe, i_cmd_wnd)
1227 / 32] & SOL_CMD_WND_MASK) >> 24) - 1);
1228 hdr->dlength[0] = 0;
1229 hdr->dlength[1] = 0;
1230 hdr->dlength[2] = 0;
1231 hdr->hlength = 0;
1232 hdr->itt = io_task->libiscsi_itt;
1233 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0);
1234 }
1235
1236 static void
1237 be_complete_tmf(struct beiscsi_conn *beiscsi_conn,
1238 struct iscsi_task *task, struct sol_cqe *psol)
1239 {
1240 struct iscsi_tm_rsp *hdr;
1241 struct iscsi_conn *conn = beiscsi_conn->conn;
1242 struct beiscsi_io_task *io_task = task->dd_data;
1243
1244 hdr = (struct iscsi_tm_rsp *)task->hdr;
1245 hdr->opcode = ISCSI_OP_SCSI_TMFUNC_RSP;
1246 hdr->flags = ((psol->dw[offsetof(struct amap_sol_cqe, i_flags) / 32]
1247 & SOL_FLAGS_MASK) >> 24) | 0x80;
1248 hdr->response = (psol->dw[offsetof(struct amap_sol_cqe, i_resp) /
1249 32] & SOL_RESP_MASK);
1250 hdr->exp_cmdsn = cpu_to_be32(psol->dw[offsetof(struct amap_sol_cqe,
1251 i_exp_cmd_sn) / 32] & SOL_EXP_CMD_SN_MASK);
1252 hdr->max_cmdsn = be32_to_cpu((psol->dw[offsetof(struct amap_sol_cqe,
1253 i_exp_cmd_sn) / 32] & SOL_EXP_CMD_SN_MASK) +
1254 ((psol->dw[offsetof(struct amap_sol_cqe, i_cmd_wnd)
1255 / 32] & SOL_CMD_WND_MASK) >> 24) - 1);
1256 hdr->itt = io_task->libiscsi_itt;
1257 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0);
1258 }
1259
1260 static void
1261 hwi_complete_drvr_msgs(struct beiscsi_conn *beiscsi_conn,
1262 struct beiscsi_hba *phba, struct sol_cqe *psol)
1263 {
1264 struct hwi_wrb_context *pwrb_context;
1265 struct wrb_handle *pwrb_handle = NULL;
1266 struct hwi_controller *phwi_ctrlr;
1267 struct iscsi_task *task;
1268 struct beiscsi_io_task *io_task;
1269 struct iscsi_conn *conn = beiscsi_conn->conn;
1270 struct iscsi_session *session = conn->session;
1271
1272 phwi_ctrlr = phba->phwi_ctrlr;
1273 pwrb_context = &phwi_ctrlr->wrb_context[((psol->
1274 dw[offsetof(struct amap_sol_cqe, cid) / 32] &
1275 SOL_CID_MASK) >> 6) -
1276 phba->fw_config.iscsi_cid_start];
1277 pwrb_handle = pwrb_context->pwrb_handle_basestd[((psol->
1278 dw[offsetof(struct amap_sol_cqe, wrb_index) /
1279 32] & SOL_WRB_INDEX_MASK) >> 16)];
1280 task = pwrb_handle->pio_handle;
1281
1282 io_task = task->dd_data;
1283 spin_lock(&phba->mgmt_sgl_lock);
1284 free_mgmt_sgl_handle(phba, io_task->psgl_handle);
1285 spin_unlock(&phba->mgmt_sgl_lock);
1286 spin_lock_bh(&session->lock);
1287 free_wrb_handle(phba, pwrb_context, pwrb_handle);
1288 spin_unlock_bh(&session->lock);
1289 }
1290
1291 static void
1292 be_complete_nopin_resp(struct beiscsi_conn *beiscsi_conn,
1293 struct iscsi_task *task, struct sol_cqe *psol)
1294 {
1295 struct iscsi_nopin *hdr;
1296 struct iscsi_conn *conn = beiscsi_conn->conn;
1297 struct beiscsi_io_task *io_task = task->dd_data;
1298
1299 hdr = (struct iscsi_nopin *)task->hdr;
1300 hdr->flags = ((psol->dw[offsetof(struct amap_sol_cqe, i_flags) / 32]
1301 & SOL_FLAGS_MASK) >> 24) | 0x80;
1302 hdr->exp_cmdsn = cpu_to_be32(psol->dw[offsetof(struct amap_sol_cqe,
1303 i_exp_cmd_sn) / 32] & SOL_EXP_CMD_SN_MASK);
1304 hdr->max_cmdsn = be32_to_cpu((psol->dw[offsetof(struct amap_sol_cqe,
1305 i_exp_cmd_sn) / 32] & SOL_EXP_CMD_SN_MASK) +
1306 ((psol->dw[offsetof(struct amap_sol_cqe, i_cmd_wnd)
1307 / 32] & SOL_CMD_WND_MASK) >> 24) - 1);
1308 hdr->opcode = ISCSI_OP_NOOP_IN;
1309 hdr->itt = io_task->libiscsi_itt;
1310 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0);
1311 }
1312
1313 static void hwi_complete_cmd(struct beiscsi_conn *beiscsi_conn,
1314 struct beiscsi_hba *phba, struct sol_cqe *psol)
1315 {
1316 struct hwi_wrb_context *pwrb_context;
1317 struct wrb_handle *pwrb_handle;
1318 struct iscsi_wrb *pwrb = NULL;
1319 struct hwi_controller *phwi_ctrlr;
1320 struct iscsi_task *task;
1321 unsigned int type;
1322 struct iscsi_conn *conn = beiscsi_conn->conn;
1323 struct iscsi_session *session = conn->session;
1324
1325 phwi_ctrlr = phba->phwi_ctrlr;
1326 pwrb_context = &phwi_ctrlr->wrb_context[((psol->dw[offsetof
1327 (struct amap_sol_cqe, cid) / 32]
1328 & SOL_CID_MASK) >> 6) -
1329 phba->fw_config.iscsi_cid_start];
1330 pwrb_handle = pwrb_context->pwrb_handle_basestd[((psol->
1331 dw[offsetof(struct amap_sol_cqe, wrb_index) /
1332 32] & SOL_WRB_INDEX_MASK) >> 16)];
1333 task = pwrb_handle->pio_handle;
1334 pwrb = pwrb_handle->pwrb;
1335 type = (pwrb->dw[offsetof(struct amap_iscsi_wrb, type) / 32] &
1336 WRB_TYPE_MASK) >> 28;
1337
1338 spin_lock_bh(&session->lock);
1339 switch (type) {
1340 case HWH_TYPE_IO:
1341 case HWH_TYPE_IO_RD:
1342 if ((task->hdr->opcode & ISCSI_OPCODE_MASK) ==
1343 ISCSI_OP_NOOP_OUT)
1344 be_complete_nopin_resp(beiscsi_conn, task, psol);
1345 else
1346 be_complete_io(beiscsi_conn, task, psol);
1347 break;
1348
1349 case HWH_TYPE_LOGOUT:
1350 if ((task->hdr->opcode & ISCSI_OPCODE_MASK) == ISCSI_OP_LOGOUT)
1351 be_complete_logout(beiscsi_conn, task, psol);
1352 else
1353 be_complete_tmf(beiscsi_conn, task, psol);
1354
1355 break;
1356
1357 case HWH_TYPE_LOGIN:
1358 SE_DEBUG(DBG_LVL_1,
1359 "\t\t No HWH_TYPE_LOGIN Expected in hwi_complete_cmd"
1360 "- Solicited path\n");
1361 break;
1362
1363 case HWH_TYPE_NOP:
1364 be_complete_nopin_resp(beiscsi_conn, task, psol);
1365 break;
1366
1367 default:
1368 shost_printk(KERN_WARNING, phba->shost,
1369 "In hwi_complete_cmd, unknown type = %d"
1370 "wrb_index 0x%x CID 0x%x\n", type,
1371 ((psol->dw[offsetof(struct amap_iscsi_wrb,
1372 type) / 32] & SOL_WRB_INDEX_MASK) >> 16),
1373 ((psol->dw[offsetof(struct amap_sol_cqe,
1374 cid) / 32] & SOL_CID_MASK) >> 6));
1375 break;
1376 }
1377
1378 spin_unlock_bh(&session->lock);
1379 }
1380
1381 static struct list_head *hwi_get_async_busy_list(struct hwi_async_pdu_context
1382 *pasync_ctx, unsigned int is_header,
1383 unsigned int host_write_ptr)
1384 {
1385 if (is_header)
1386 return &pasync_ctx->async_entry[host_write_ptr].
1387 header_busy_list;
1388 else
1389 return &pasync_ctx->async_entry[host_write_ptr].data_busy_list;
1390 }
1391
1392 static struct async_pdu_handle *
1393 hwi_get_async_handle(struct beiscsi_hba *phba,
1394 struct beiscsi_conn *beiscsi_conn,
1395 struct hwi_async_pdu_context *pasync_ctx,
1396 struct i_t_dpdu_cqe *pdpdu_cqe, unsigned int *pcq_index)
1397 {
1398 struct be_bus_address phys_addr;
1399 struct list_head *pbusy_list;
1400 struct async_pdu_handle *pasync_handle = NULL;
1401 int buffer_len = 0;
1402 unsigned char buffer_index = -1;
1403 unsigned char is_header = 0;
1404
1405 phys_addr.u.a32.address_lo =
1406 pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe, db_addr_lo) / 32] -
1407 ((pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe, dpl) / 32]
1408 & PDUCQE_DPL_MASK) >> 16);
1409 phys_addr.u.a32.address_hi =
1410 pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe, db_addr_hi) / 32];
1411
1412 phys_addr.u.a64.address =
1413 *((unsigned long long *)(&phys_addr.u.a64.address));
1414
1415 switch (pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe, code) / 32]
1416 & PDUCQE_CODE_MASK) {
1417 case UNSOL_HDR_NOTIFY:
1418 is_header = 1;
1419
1420 pbusy_list = hwi_get_async_busy_list(pasync_ctx, 1,
1421 (pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe,
1422 index) / 32] & PDUCQE_INDEX_MASK));
1423
1424 buffer_len = (unsigned int)(phys_addr.u.a64.address -
1425 pasync_ctx->async_header.pa_base.u.a64.address);
1426
1427 buffer_index = buffer_len /
1428 pasync_ctx->async_header.buffer_size;
1429
1430 break;
1431 case UNSOL_DATA_NOTIFY:
1432 pbusy_list = hwi_get_async_busy_list(pasync_ctx, 0, (pdpdu_cqe->
1433 dw[offsetof(struct amap_i_t_dpdu_cqe,
1434 index) / 32] & PDUCQE_INDEX_MASK));
1435 buffer_len = (unsigned long)(phys_addr.u.a64.address -
1436 pasync_ctx->async_data.pa_base.u.
1437 a64.address);
1438 buffer_index = buffer_len / pasync_ctx->async_data.buffer_size;
1439 break;
1440 default:
1441 pbusy_list = NULL;
1442 shost_printk(KERN_WARNING, phba->shost,
1443 "Unexpected code=%d\n",
1444 pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe,
1445 code) / 32] & PDUCQE_CODE_MASK);
1446 return NULL;
1447 }
1448
1449 WARN_ON(!(buffer_index <= pasync_ctx->async_data.num_entries));
1450 WARN_ON(list_empty(pbusy_list));
1451 list_for_each_entry(pasync_handle, pbusy_list, link) {
1452 WARN_ON(pasync_handle->consumed);
1453 if (pasync_handle->index == buffer_index)
1454 break;
1455 }
1456
1457 WARN_ON(!pasync_handle);
1458
1459 pasync_handle->cri = (unsigned short)beiscsi_conn->beiscsi_conn_cid -
1460 phba->fw_config.iscsi_cid_start;
1461 pasync_handle->is_header = is_header;
1462 pasync_handle->buffer_len = ((pdpdu_cqe->
1463 dw[offsetof(struct amap_i_t_dpdu_cqe, dpl) / 32]
1464 & PDUCQE_DPL_MASK) >> 16);
1465
1466 *pcq_index = (pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe,
1467 index) / 32] & PDUCQE_INDEX_MASK);
1468 return pasync_handle;
1469 }
1470
1471 static unsigned int
1472 hwi_update_async_writables(struct hwi_async_pdu_context *pasync_ctx,
1473 unsigned int is_header, unsigned int cq_index)
1474 {
1475 struct list_head *pbusy_list;
1476 struct async_pdu_handle *pasync_handle;
1477 unsigned int num_entries, writables = 0;
1478 unsigned int *pep_read_ptr, *pwritables;
1479
1480
1481 if (is_header) {
1482 pep_read_ptr = &pasync_ctx->async_header.ep_read_ptr;
1483 pwritables = &pasync_ctx->async_header.writables;
1484 num_entries = pasync_ctx->async_header.num_entries;
1485 } else {
1486 pep_read_ptr = &pasync_ctx->async_data.ep_read_ptr;
1487 pwritables = &pasync_ctx->async_data.writables;
1488 num_entries = pasync_ctx->async_data.num_entries;
1489 }
1490
1491 while ((*pep_read_ptr) != cq_index) {
1492 (*pep_read_ptr)++;
1493 *pep_read_ptr = (*pep_read_ptr) % num_entries;
1494
1495 pbusy_list = hwi_get_async_busy_list(pasync_ctx, is_header,
1496 *pep_read_ptr);
1497 if (writables == 0)
1498 WARN_ON(list_empty(pbusy_list));
1499
1500 if (!list_empty(pbusy_list)) {
1501 pasync_handle = list_entry(pbusy_list->next,
1502 struct async_pdu_handle,
1503 link);
1504 WARN_ON(!pasync_handle);
1505 pasync_handle->consumed = 1;
1506 }
1507
1508 writables++;
1509 }
1510
1511 if (!writables) {
1512 SE_DEBUG(DBG_LVL_1,
1513 "Duplicate notification received - index 0x%x!!\n",
1514 cq_index);
1515 WARN_ON(1);
1516 }
1517
1518 *pwritables = *pwritables + writables;
1519 return 0;
1520 }
1521
1522 static unsigned int hwi_free_async_msg(struct beiscsi_hba *phba,
1523 unsigned int cri)
1524 {
1525 struct hwi_controller *phwi_ctrlr;
1526 struct hwi_async_pdu_context *pasync_ctx;
1527 struct async_pdu_handle *pasync_handle, *tmp_handle;
1528 struct list_head *plist;
1529 unsigned int i = 0;
1530
1531 phwi_ctrlr = phba->phwi_ctrlr;
1532 pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr);
1533
1534 plist = &pasync_ctx->async_entry[cri].wait_queue.list;
1535
1536 list_for_each_entry_safe(pasync_handle, tmp_handle, plist, link) {
1537 list_del(&pasync_handle->link);
1538
1539 if (i == 0) {
1540 list_add_tail(&pasync_handle->link,
1541 &pasync_ctx->async_header.free_list);
1542 pasync_ctx->async_header.free_entries++;
1543 i++;
1544 } else {
1545 list_add_tail(&pasync_handle->link,
1546 &pasync_ctx->async_data.free_list);
1547 pasync_ctx->async_data.free_entries++;
1548 i++;
1549 }
1550 }
1551
1552 INIT_LIST_HEAD(&pasync_ctx->async_entry[cri].wait_queue.list);
1553 pasync_ctx->async_entry[cri].wait_queue.hdr_received = 0;
1554 pasync_ctx->async_entry[cri].wait_queue.bytes_received = 0;
1555 return 0;
1556 }
1557
1558 static struct phys_addr *
1559 hwi_get_ring_address(struct hwi_async_pdu_context *pasync_ctx,
1560 unsigned int is_header, unsigned int host_write_ptr)
1561 {
1562 struct phys_addr *pasync_sge = NULL;
1563
1564 if (is_header)
1565 pasync_sge = pasync_ctx->async_header.ring_base;
1566 else
1567 pasync_sge = pasync_ctx->async_data.ring_base;
1568
1569 return pasync_sge + host_write_ptr;
1570 }
1571
1572 static void hwi_post_async_buffers(struct beiscsi_hba *phba,
1573 unsigned int is_header)
1574 {
1575 struct hwi_controller *phwi_ctrlr;
1576 struct hwi_async_pdu_context *pasync_ctx;
1577 struct async_pdu_handle *pasync_handle;
1578 struct list_head *pfree_link, *pbusy_list;
1579 struct phys_addr *pasync_sge;
1580 unsigned int ring_id, num_entries;
1581 unsigned int host_write_num;
1582 unsigned int writables;
1583 unsigned int i = 0;
1584 u32 doorbell = 0;
1585
1586 phwi_ctrlr = phba->phwi_ctrlr;
1587 pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr);
1588
1589 if (is_header) {
1590 num_entries = pasync_ctx->async_header.num_entries;
1591 writables = min(pasync_ctx->async_header.writables,
1592 pasync_ctx->async_header.free_entries);
1593 pfree_link = pasync_ctx->async_header.free_list.next;
1594 host_write_num = pasync_ctx->async_header.host_write_ptr;
1595 ring_id = phwi_ctrlr->default_pdu_hdr.id;
1596 } else {
1597 num_entries = pasync_ctx->async_data.num_entries;
1598 writables = min(pasync_ctx->async_data.writables,
1599 pasync_ctx->async_data.free_entries);
1600 pfree_link = pasync_ctx->async_data.free_list.next;
1601 host_write_num = pasync_ctx->async_data.host_write_ptr;
1602 ring_id = phwi_ctrlr->default_pdu_data.id;
1603 }
1604
1605 writables = (writables / 8) * 8;
1606 if (writables) {
1607 for (i = 0; i < writables; i++) {
1608 pbusy_list =
1609 hwi_get_async_busy_list(pasync_ctx, is_header,
1610 host_write_num);
1611 pasync_handle =
1612 list_entry(pfree_link, struct async_pdu_handle,
1613 link);
1614 WARN_ON(!pasync_handle);
1615 pasync_handle->consumed = 0;
1616
1617 pfree_link = pfree_link->next;
1618
1619 pasync_sge = hwi_get_ring_address(pasync_ctx,
1620 is_header, host_write_num);
1621
1622 pasync_sge->hi = pasync_handle->pa.u.a32.address_lo;
1623 pasync_sge->lo = pasync_handle->pa.u.a32.address_hi;
1624
1625 list_move(&pasync_handle->link, pbusy_list);
1626
1627 host_write_num++;
1628 host_write_num = host_write_num % num_entries;
1629 }
1630
1631 if (is_header) {
1632 pasync_ctx->async_header.host_write_ptr =
1633 host_write_num;
1634 pasync_ctx->async_header.free_entries -= writables;
1635 pasync_ctx->async_header.writables -= writables;
1636 pasync_ctx->async_header.busy_entries += writables;
1637 } else {
1638 pasync_ctx->async_data.host_write_ptr = host_write_num;
1639 pasync_ctx->async_data.free_entries -= writables;
1640 pasync_ctx->async_data.writables -= writables;
1641 pasync_ctx->async_data.busy_entries += writables;
1642 }
1643
1644 doorbell |= ring_id & DB_DEF_PDU_RING_ID_MASK;
1645 doorbell |= 1 << DB_DEF_PDU_REARM_SHIFT;
1646 doorbell |= 0 << DB_DEF_PDU_EVENT_SHIFT;
1647 doorbell |= (writables & DB_DEF_PDU_CQPROC_MASK)
1648 << DB_DEF_PDU_CQPROC_SHIFT;
1649
1650 iowrite32(doorbell, phba->db_va + DB_RXULP0_OFFSET);
1651 }
1652 }
1653
1654 static void hwi_flush_default_pdu_buffer(struct beiscsi_hba *phba,
1655 struct beiscsi_conn *beiscsi_conn,
1656 struct i_t_dpdu_cqe *pdpdu_cqe)
1657 {
1658 struct hwi_controller *phwi_ctrlr;
1659 struct hwi_async_pdu_context *pasync_ctx;
1660 struct async_pdu_handle *pasync_handle = NULL;
1661 unsigned int cq_index = -1;
1662
1663 phwi_ctrlr = phba->phwi_ctrlr;
1664 pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr);
1665
1666 pasync_handle = hwi_get_async_handle(phba, beiscsi_conn, pasync_ctx,
1667 pdpdu_cqe, &cq_index);
1668 BUG_ON(pasync_handle->is_header != 0);
1669 if (pasync_handle->consumed == 0)
1670 hwi_update_async_writables(pasync_ctx, pasync_handle->is_header,
1671 cq_index);
1672
1673 hwi_free_async_msg(phba, pasync_handle->cri);
1674 hwi_post_async_buffers(phba, pasync_handle->is_header);
1675 }
1676
1677 static unsigned int
1678 hwi_fwd_async_msg(struct beiscsi_conn *beiscsi_conn,
1679 struct beiscsi_hba *phba,
1680 struct hwi_async_pdu_context *pasync_ctx, unsigned short cri)
1681 {
1682 struct list_head *plist;
1683 struct async_pdu_handle *pasync_handle;
1684 void *phdr = NULL;
1685 unsigned int hdr_len = 0, buf_len = 0;
1686 unsigned int status, index = 0, offset = 0;
1687 void *pfirst_buffer = NULL;
1688 unsigned int num_buf = 0;
1689
1690 plist = &pasync_ctx->async_entry[cri].wait_queue.list;
1691
1692 list_for_each_entry(pasync_handle, plist, link) {
1693 if (index == 0) {
1694 phdr = pasync_handle->pbuffer;
1695 hdr_len = pasync_handle->buffer_len;
1696 } else {
1697 buf_len = pasync_handle->buffer_len;
1698 if (!num_buf) {
1699 pfirst_buffer = pasync_handle->pbuffer;
1700 num_buf++;
1701 }
1702 memcpy(pfirst_buffer + offset,
1703 pasync_handle->pbuffer, buf_len);
1704 offset = buf_len;
1705 }
1706 index++;
1707 }
1708
1709 status = beiscsi_process_async_pdu(beiscsi_conn, phba,
1710 (beiscsi_conn->beiscsi_conn_cid -
1711 phba->fw_config.iscsi_cid_start),
1712 phdr, hdr_len, pfirst_buffer,
1713 buf_len);
1714
1715 if (status == 0)
1716 hwi_free_async_msg(phba, cri);
1717 return 0;
1718 }
1719
1720 static unsigned int
1721 hwi_gather_async_pdu(struct beiscsi_conn *beiscsi_conn,
1722 struct beiscsi_hba *phba,
1723 struct async_pdu_handle *pasync_handle)
1724 {
1725 struct hwi_async_pdu_context *pasync_ctx;
1726 struct hwi_controller *phwi_ctrlr;
1727 unsigned int bytes_needed = 0, status = 0;
1728 unsigned short cri = pasync_handle->cri;
1729 struct pdu_base *ppdu;
1730
1731 phwi_ctrlr = phba->phwi_ctrlr;
1732 pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr);
1733
1734 list_del(&pasync_handle->link);
1735 if (pasync_handle->is_header) {
1736 pasync_ctx->async_header.busy_entries--;
1737 if (pasync_ctx->async_entry[cri].wait_queue.hdr_received) {
1738 hwi_free_async_msg(phba, cri);
1739 BUG();
1740 }
1741
1742 pasync_ctx->async_entry[cri].wait_queue.bytes_received = 0;
1743 pasync_ctx->async_entry[cri].wait_queue.hdr_received = 1;
1744 pasync_ctx->async_entry[cri].wait_queue.hdr_len =
1745 (unsigned short)pasync_handle->buffer_len;
1746 list_add_tail(&pasync_handle->link,
1747 &pasync_ctx->async_entry[cri].wait_queue.list);
1748
1749 ppdu = pasync_handle->pbuffer;
1750 bytes_needed = ((((ppdu->dw[offsetof(struct amap_pdu_base,
1751 data_len_hi) / 32] & PDUBASE_DATALENHI_MASK) << 8) &
1752 0xFFFF0000) | ((be16_to_cpu((ppdu->
1753 dw[offsetof(struct amap_pdu_base, data_len_lo) / 32]
1754 & PDUBASE_DATALENLO_MASK) >> 16)) & 0x0000FFFF));
1755
1756 if (status == 0) {
1757 pasync_ctx->async_entry[cri].wait_queue.bytes_needed =
1758 bytes_needed;
1759
1760 if (bytes_needed == 0)
1761 status = hwi_fwd_async_msg(beiscsi_conn, phba,
1762 pasync_ctx, cri);
1763 }
1764 } else {
1765 pasync_ctx->async_data.busy_entries--;
1766 if (pasync_ctx->async_entry[cri].wait_queue.hdr_received) {
1767 list_add_tail(&pasync_handle->link,
1768 &pasync_ctx->async_entry[cri].wait_queue.
1769 list);
1770 pasync_ctx->async_entry[cri].wait_queue.
1771 bytes_received +=
1772 (unsigned short)pasync_handle->buffer_len;
1773
1774 if (pasync_ctx->async_entry[cri].wait_queue.
1775 bytes_received >=
1776 pasync_ctx->async_entry[cri].wait_queue.
1777 bytes_needed)
1778 status = hwi_fwd_async_msg(beiscsi_conn, phba,
1779 pasync_ctx, cri);
1780 }
1781 }
1782 return status;
1783 }
1784
1785 static void hwi_process_default_pdu_ring(struct beiscsi_conn *beiscsi_conn,
1786 struct beiscsi_hba *phba,
1787 struct i_t_dpdu_cqe *pdpdu_cqe)
1788 {
1789 struct hwi_controller *phwi_ctrlr;
1790 struct hwi_async_pdu_context *pasync_ctx;
1791 struct async_pdu_handle *pasync_handle = NULL;
1792 unsigned int cq_index = -1;
1793
1794 phwi_ctrlr = phba->phwi_ctrlr;
1795 pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr);
1796 pasync_handle = hwi_get_async_handle(phba, beiscsi_conn, pasync_ctx,
1797 pdpdu_cqe, &cq_index);
1798
1799 if (pasync_handle->consumed == 0)
1800 hwi_update_async_writables(pasync_ctx, pasync_handle->is_header,
1801 cq_index);
1802 hwi_gather_async_pdu(beiscsi_conn, phba, pasync_handle);
1803 hwi_post_async_buffers(phba, pasync_handle->is_header);
1804 }
1805
1806 static void beiscsi_process_mcc_isr(struct beiscsi_hba *phba)
1807 {
1808 struct be_queue_info *mcc_cq;
1809 struct be_mcc_compl *mcc_compl;
1810 unsigned int num_processed = 0;
1811
1812 mcc_cq = &phba->ctrl.mcc_obj.cq;
1813 mcc_compl = queue_tail_node(mcc_cq);
1814 mcc_compl->flags = le32_to_cpu(mcc_compl->flags);
1815 while (mcc_compl->flags & CQE_FLAGS_VALID_MASK) {
1816
1817 if (num_processed >= 32) {
1818 hwi_ring_cq_db(phba, mcc_cq->id,
1819 num_processed, 0, 0);
1820 num_processed = 0;
1821 }
1822 if (mcc_compl->flags & CQE_FLAGS_ASYNC_MASK) {
1823 /* Interpret flags as an async trailer */
1824 if (is_link_state_evt(mcc_compl->flags))
1825 /* Interpret compl as a async link evt */
1826 beiscsi_async_link_state_process(phba,
1827 (struct be_async_event_link_state *) mcc_compl);
1828 else
1829 SE_DEBUG(DBG_LVL_1,
1830 " Unsupported Async Event, flags"
1831 " = 0x%08x\n", mcc_compl->flags);
1832 } else if (mcc_compl->flags & CQE_FLAGS_COMPLETED_MASK) {
1833 be_mcc_compl_process_isr(&phba->ctrl, mcc_compl);
1834 atomic_dec(&phba->ctrl.mcc_obj.q.used);
1835 }
1836
1837 mcc_compl->flags = 0;
1838 queue_tail_inc(mcc_cq);
1839 mcc_compl = queue_tail_node(mcc_cq);
1840 mcc_compl->flags = le32_to_cpu(mcc_compl->flags);
1841 num_processed++;
1842 }
1843
1844 if (num_processed > 0)
1845 hwi_ring_cq_db(phba, mcc_cq->id, num_processed, 1, 0);
1846
1847 }
1848
1849 static unsigned int beiscsi_process_cq(struct be_eq_obj *pbe_eq)
1850 {
1851 struct be_queue_info *cq;
1852 struct sol_cqe *sol;
1853 struct dmsg_cqe *dmsg;
1854 unsigned int num_processed = 0;
1855 unsigned int tot_nump = 0;
1856 struct beiscsi_conn *beiscsi_conn;
1857 struct beiscsi_endpoint *beiscsi_ep;
1858 struct iscsi_endpoint *ep;
1859 struct beiscsi_hba *phba;
1860
1861 cq = pbe_eq->cq;
1862 sol = queue_tail_node(cq);
1863 phba = pbe_eq->phba;
1864
1865 while (sol->dw[offsetof(struct amap_sol_cqe, valid) / 32] &
1866 CQE_VALID_MASK) {
1867 be_dws_le_to_cpu(sol, sizeof(struct sol_cqe));
1868
1869 ep = phba->ep_array[(u32) ((sol->
1870 dw[offsetof(struct amap_sol_cqe, cid) / 32] &
1871 SOL_CID_MASK) >> 6) -
1872 phba->fw_config.iscsi_cid_start];
1873
1874 beiscsi_ep = ep->dd_data;
1875 beiscsi_conn = beiscsi_ep->conn;
1876
1877 if (num_processed >= 32) {
1878 hwi_ring_cq_db(phba, cq->id,
1879 num_processed, 0, 0);
1880 tot_nump += num_processed;
1881 num_processed = 0;
1882 }
1883
1884 switch ((u32) sol->dw[offsetof(struct amap_sol_cqe, code) /
1885 32] & CQE_CODE_MASK) {
1886 case SOL_CMD_COMPLETE:
1887 hwi_complete_cmd(beiscsi_conn, phba, sol);
1888 break;
1889 case DRIVERMSG_NOTIFY:
1890 SE_DEBUG(DBG_LVL_8, "Received DRIVERMSG_NOTIFY\n");
1891 dmsg = (struct dmsg_cqe *)sol;
1892 hwi_complete_drvr_msgs(beiscsi_conn, phba, sol);
1893 break;
1894 case UNSOL_HDR_NOTIFY:
1895 SE_DEBUG(DBG_LVL_8, "Received UNSOL_HDR_ NOTIFY\n");
1896 hwi_process_default_pdu_ring(beiscsi_conn, phba,
1897 (struct i_t_dpdu_cqe *)sol);
1898 break;
1899 case UNSOL_DATA_NOTIFY:
1900 SE_DEBUG(DBG_LVL_8, "Received UNSOL_DATA_NOTIFY\n");
1901 hwi_process_default_pdu_ring(beiscsi_conn, phba,
1902 (struct i_t_dpdu_cqe *)sol);
1903 break;
1904 case CXN_INVALIDATE_INDEX_NOTIFY:
1905 case CMD_INVALIDATED_NOTIFY:
1906 case CXN_INVALIDATE_NOTIFY:
1907 SE_DEBUG(DBG_LVL_1,
1908 "Ignoring CQ Error notification for cmd/cxn"
1909 "invalidate\n");
1910 break;
1911 case SOL_CMD_KILLED_DATA_DIGEST_ERR:
1912 case CMD_KILLED_INVALID_STATSN_RCVD:
1913 case CMD_KILLED_INVALID_R2T_RCVD:
1914 case CMD_CXN_KILLED_LUN_INVALID:
1915 case CMD_CXN_KILLED_ICD_INVALID:
1916 case CMD_CXN_KILLED_ITT_INVALID:
1917 case CMD_CXN_KILLED_SEQ_OUTOFORDER:
1918 case CMD_CXN_KILLED_INVALID_DATASN_RCVD:
1919 SE_DEBUG(DBG_LVL_1,
1920 "CQ Error notification for cmd.. "
1921 "code %d cid 0x%x\n",
1922 sol->dw[offsetof(struct amap_sol_cqe, code) /
1923 32] & CQE_CODE_MASK,
1924 (sol->dw[offsetof(struct amap_sol_cqe, cid) /
1925 32] & SOL_CID_MASK));
1926 break;
1927 case UNSOL_DATA_DIGEST_ERROR_NOTIFY:
1928 SE_DEBUG(DBG_LVL_1,
1929 "Digest error on def pdu ring, dropping..\n");
1930 hwi_flush_default_pdu_buffer(phba, beiscsi_conn,
1931 (struct i_t_dpdu_cqe *) sol);
1932 break;
1933 case CXN_KILLED_PDU_SIZE_EXCEEDS_DSL:
1934 case CXN_KILLED_BURST_LEN_MISMATCH:
1935 case CXN_KILLED_AHS_RCVD:
1936 case CXN_KILLED_HDR_DIGEST_ERR:
1937 case CXN_KILLED_UNKNOWN_HDR:
1938 case CXN_KILLED_STALE_ITT_TTT_RCVD:
1939 case CXN_KILLED_INVALID_ITT_TTT_RCVD:
1940 case CXN_KILLED_TIMED_OUT:
1941 case CXN_KILLED_FIN_RCVD:
1942 case CXN_KILLED_BAD_UNSOL_PDU_RCVD:
1943 case CXN_KILLED_BAD_WRB_INDEX_ERROR:
1944 case CXN_KILLED_OVER_RUN_RESIDUAL:
1945 case CXN_KILLED_UNDER_RUN_RESIDUAL:
1946 case CXN_KILLED_CMND_DATA_NOT_ON_SAME_CONN:
1947 SE_DEBUG(DBG_LVL_1, "CQ Error %d, reset CID "
1948 "0x%x...\n",
1949 sol->dw[offsetof(struct amap_sol_cqe, code) /
1950 32] & CQE_CODE_MASK,
1951 (sol->dw[offsetof(struct amap_sol_cqe, cid) /
1952 32] & CQE_CID_MASK));
1953 iscsi_conn_failure(beiscsi_conn->conn,
1954 ISCSI_ERR_CONN_FAILED);
1955 break;
1956 case CXN_KILLED_RST_SENT:
1957 case CXN_KILLED_RST_RCVD:
1958 SE_DEBUG(DBG_LVL_1, "CQ Error %d, reset"
1959 "received/sent on CID 0x%x...\n",
1960 sol->dw[offsetof(struct amap_sol_cqe, code) /
1961 32] & CQE_CODE_MASK,
1962 (sol->dw[offsetof(struct amap_sol_cqe, cid) /
1963 32] & CQE_CID_MASK));
1964 iscsi_conn_failure(beiscsi_conn->conn,
1965 ISCSI_ERR_CONN_FAILED);
1966 break;
1967 default:
1968 SE_DEBUG(DBG_LVL_1, "CQ Error Invalid code= %d "
1969 "received on CID 0x%x...\n",
1970 sol->dw[offsetof(struct amap_sol_cqe, code) /
1971 32] & CQE_CODE_MASK,
1972 (sol->dw[offsetof(struct amap_sol_cqe, cid) /
1973 32] & CQE_CID_MASK));
1974 break;
1975 }
1976
1977 AMAP_SET_BITS(struct amap_sol_cqe, valid, sol, 0);
1978 queue_tail_inc(cq);
1979 sol = queue_tail_node(cq);
1980 num_processed++;
1981 }
1982
1983 if (num_processed > 0) {
1984 tot_nump += num_processed;
1985 hwi_ring_cq_db(phba, cq->id, num_processed, 1, 0);
1986 }
1987 return tot_nump;
1988 }
1989
1990 void beiscsi_process_all_cqs(struct work_struct *work)
1991 {
1992 unsigned long flags;
1993 struct hwi_controller *phwi_ctrlr;
1994 struct hwi_context_memory *phwi_context;
1995 struct be_eq_obj *pbe_eq;
1996 struct beiscsi_hba *phba =
1997 container_of(work, struct beiscsi_hba, work_cqs);
1998
1999 phwi_ctrlr = phba->phwi_ctrlr;
2000 phwi_context = phwi_ctrlr->phwi_ctxt;
2001 if (phba->msix_enabled)
2002 pbe_eq = &phwi_context->be_eq[phba->num_cpus];
2003 else
2004 pbe_eq = &phwi_context->be_eq[0];
2005
2006 if (phba->todo_mcc_cq) {
2007 spin_lock_irqsave(&phba->isr_lock, flags);
2008 phba->todo_mcc_cq = 0;
2009 spin_unlock_irqrestore(&phba->isr_lock, flags);
2010 beiscsi_process_mcc_isr(phba);
2011 }
2012
2013 if (phba->todo_cq) {
2014 spin_lock_irqsave(&phba->isr_lock, flags);
2015 phba->todo_cq = 0;
2016 spin_unlock_irqrestore(&phba->isr_lock, flags);
2017 beiscsi_process_cq(pbe_eq);
2018 }
2019 }
2020
2021 static int be_iopoll(struct blk_iopoll *iop, int budget)
2022 {
2023 static unsigned int ret;
2024 struct beiscsi_hba *phba;
2025 struct be_eq_obj *pbe_eq;
2026
2027 pbe_eq = container_of(iop, struct be_eq_obj, iopoll);
2028 ret = beiscsi_process_cq(pbe_eq);
2029 if (ret < budget) {
2030 phba = pbe_eq->phba;
2031 blk_iopoll_complete(iop);
2032 SE_DEBUG(DBG_LVL_8, "rearm pbe_eq->q.id =%d\n", pbe_eq->q.id);
2033 hwi_ring_eq_db(phba, pbe_eq->q.id, 0, 0, 1, 1);
2034 }
2035 return ret;
2036 }
2037
2038 static void
2039 hwi_write_sgl(struct iscsi_wrb *pwrb, struct scatterlist *sg,
2040 unsigned int num_sg, struct beiscsi_io_task *io_task)
2041 {
2042 struct iscsi_sge *psgl;
2043 unsigned int sg_len, index;
2044 unsigned int sge_len = 0;
2045 unsigned long long addr;
2046 struct scatterlist *l_sg;
2047 unsigned int offset;
2048
2049 AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_lo, pwrb,
2050 io_task->bhs_pa.u.a32.address_lo);
2051 AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_hi, pwrb,
2052 io_task->bhs_pa.u.a32.address_hi);
2053
2054 l_sg = sg;
2055 for (index = 0; (index < num_sg) && (index < 2); index++,
2056 sg = sg_next(sg)) {
2057 if (index == 0) {
2058 sg_len = sg_dma_len(sg);
2059 addr = (u64) sg_dma_address(sg);
2060 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_lo, pwrb,
2061 ((u32)(addr & 0xFFFFFFFF)));
2062 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_hi, pwrb,
2063 ((u32)(addr >> 32)));
2064 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_len, pwrb,
2065 sg_len);
2066 sge_len = sg_len;
2067 } else {
2068 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_r2t_offset,
2069 pwrb, sge_len);
2070 sg_len = sg_dma_len(sg);
2071 addr = (u64) sg_dma_address(sg);
2072 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_addr_lo, pwrb,
2073 ((u32)(addr & 0xFFFFFFFF)));
2074 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_addr_hi, pwrb,
2075 ((u32)(addr >> 32)));
2076 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_len, pwrb,
2077 sg_len);
2078 }
2079 }
2080 psgl = (struct iscsi_sge *)io_task->psgl_handle->pfrag;
2081 memset(psgl, 0, sizeof(*psgl) * BE2_SGE);
2082
2083 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, io_task->bhs_len - 2);
2084
2085 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
2086 io_task->bhs_pa.u.a32.address_hi);
2087 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
2088 io_task->bhs_pa.u.a32.address_lo);
2089
2090 if (num_sg == 1) {
2091 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb,
2092 1);
2093 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_last, pwrb,
2094 0);
2095 } else if (num_sg == 2) {
2096 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb,
2097 0);
2098 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_last, pwrb,
2099 1);
2100 } else {
2101 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb,
2102 0);
2103 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_last, pwrb,
2104 0);
2105 }
2106 sg = l_sg;
2107 psgl++;
2108 psgl++;
2109 offset = 0;
2110 for (index = 0; index < num_sg; index++, sg = sg_next(sg), psgl++) {
2111 sg_len = sg_dma_len(sg);
2112 addr = (u64) sg_dma_address(sg);
2113 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
2114 (addr & 0xFFFFFFFF));
2115 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
2116 (addr >> 32));
2117 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, sg_len);
2118 AMAP_SET_BITS(struct amap_iscsi_sge, sge_offset, psgl, offset);
2119 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 0);
2120 offset += sg_len;
2121 }
2122 psgl--;
2123 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 1);
2124 }
2125
2126 static void hwi_write_buffer(struct iscsi_wrb *pwrb, struct iscsi_task *task)
2127 {
2128 struct iscsi_sge *psgl;
2129 unsigned long long addr;
2130 struct beiscsi_io_task *io_task = task->dd_data;
2131 struct beiscsi_conn *beiscsi_conn = io_task->conn;
2132 struct beiscsi_hba *phba = beiscsi_conn->phba;
2133
2134 io_task->bhs_len = sizeof(struct be_nonio_bhs) - 2;
2135 AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_lo, pwrb,
2136 io_task->bhs_pa.u.a32.address_lo);
2137 AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_hi, pwrb,
2138 io_task->bhs_pa.u.a32.address_hi);
2139
2140 if (task->data) {
2141 if (task->data_count) {
2142 AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 1);
2143 addr = (u64) pci_map_single(phba->pcidev,
2144 task->data,
2145 task->data_count, 1);
2146 } else {
2147 AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 0);
2148 addr = 0;
2149 }
2150 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_lo, pwrb,
2151 ((u32)(addr & 0xFFFFFFFF)));
2152 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_hi, pwrb,
2153 ((u32)(addr >> 32)));
2154 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_len, pwrb,
2155 task->data_count);
2156
2157 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb, 1);
2158 } else {
2159 AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 0);
2160 addr = 0;
2161 }
2162
2163 psgl = (struct iscsi_sge *)io_task->psgl_handle->pfrag;
2164
2165 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, io_task->bhs_len);
2166
2167 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
2168 io_task->bhs_pa.u.a32.address_hi);
2169 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
2170 io_task->bhs_pa.u.a32.address_lo);
2171 if (task->data) {
2172 psgl++;
2173 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl, 0);
2174 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl, 0);
2175 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, 0);
2176 AMAP_SET_BITS(struct amap_iscsi_sge, sge_offset, psgl, 0);
2177 AMAP_SET_BITS(struct amap_iscsi_sge, rsvd0, psgl, 0);
2178 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 0);
2179
2180 psgl++;
2181 if (task->data) {
2182 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
2183 ((u32)(addr & 0xFFFFFFFF)));
2184 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
2185 ((u32)(addr >> 32)));
2186 }
2187 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, 0x106);
2188 }
2189 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 1);
2190 }
2191
2192 static void beiscsi_find_mem_req(struct beiscsi_hba *phba)
2193 {
2194 unsigned int num_cq_pages, num_async_pdu_buf_pages;
2195 unsigned int num_async_pdu_data_pages, wrb_sz_per_cxn;
2196 unsigned int num_async_pdu_buf_sgl_pages, num_async_pdu_data_sgl_pages;
2197
2198 num_cq_pages = PAGES_REQUIRED(phba->params.num_cq_entries * \
2199 sizeof(struct sol_cqe));
2200 num_async_pdu_buf_pages =
2201 PAGES_REQUIRED(phba->params.asyncpdus_per_ctrl * \
2202 phba->params.defpdu_hdr_sz);
2203 num_async_pdu_buf_sgl_pages =
2204 PAGES_REQUIRED(phba->params.asyncpdus_per_ctrl * \
2205 sizeof(struct phys_addr));
2206 num_async_pdu_data_pages =
2207 PAGES_REQUIRED(phba->params.asyncpdus_per_ctrl * \
2208 phba->params.defpdu_data_sz);
2209 num_async_pdu_data_sgl_pages =
2210 PAGES_REQUIRED(phba->params.asyncpdus_per_ctrl * \
2211 sizeof(struct phys_addr));
2212
2213 phba->params.hwi_ws_sz = sizeof(struct hwi_controller);
2214
2215 phba->mem_req[ISCSI_MEM_GLOBAL_HEADER] = 2 *
2216 BE_ISCSI_PDU_HEADER_SIZE;
2217 phba->mem_req[HWI_MEM_ADDN_CONTEXT] =
2218 sizeof(struct hwi_context_memory);
2219
2220
2221 phba->mem_req[HWI_MEM_WRB] = sizeof(struct iscsi_wrb)
2222 * (phba->params.wrbs_per_cxn)
2223 * phba->params.cxns_per_ctrl;
2224 wrb_sz_per_cxn = sizeof(struct wrb_handle) *
2225 (phba->params.wrbs_per_cxn);
2226 phba->mem_req[HWI_MEM_WRBH] = roundup_pow_of_two((wrb_sz_per_cxn) *
2227 phba->params.cxns_per_ctrl);
2228
2229 phba->mem_req[HWI_MEM_SGLH] = sizeof(struct sgl_handle) *
2230 phba->params.icds_per_ctrl;
2231 phba->mem_req[HWI_MEM_SGE] = sizeof(struct iscsi_sge) *
2232 phba->params.num_sge_per_io * phba->params.icds_per_ctrl;
2233
2234 phba->mem_req[HWI_MEM_ASYNC_HEADER_BUF] =
2235 num_async_pdu_buf_pages * PAGE_SIZE;
2236 phba->mem_req[HWI_MEM_ASYNC_DATA_BUF] =
2237 num_async_pdu_data_pages * PAGE_SIZE;
2238 phba->mem_req[HWI_MEM_ASYNC_HEADER_RING] =
2239 num_async_pdu_buf_sgl_pages * PAGE_SIZE;
2240 phba->mem_req[HWI_MEM_ASYNC_DATA_RING] =
2241 num_async_pdu_data_sgl_pages * PAGE_SIZE;
2242 phba->mem_req[HWI_MEM_ASYNC_HEADER_HANDLE] =
2243 phba->params.asyncpdus_per_ctrl *
2244 sizeof(struct async_pdu_handle);
2245 phba->mem_req[HWI_MEM_ASYNC_DATA_HANDLE] =
2246 phba->params.asyncpdus_per_ctrl *
2247 sizeof(struct async_pdu_handle);
2248 phba->mem_req[HWI_MEM_ASYNC_PDU_CONTEXT] =
2249 sizeof(struct hwi_async_pdu_context) +
2250 (phba->params.cxns_per_ctrl * sizeof(struct hwi_async_entry));
2251 }
2252
2253 static int beiscsi_alloc_mem(struct beiscsi_hba *phba)
2254 {
2255 struct be_mem_descriptor *mem_descr;
2256 dma_addr_t bus_add;
2257 struct mem_array *mem_arr, *mem_arr_orig;
2258 unsigned int i, j, alloc_size, curr_alloc_size;
2259
2260 phba->phwi_ctrlr = kmalloc(phba->params.hwi_ws_sz, GFP_KERNEL);
2261 if (!phba->phwi_ctrlr)
2262 return -ENOMEM;
2263
2264 phba->init_mem = kcalloc(SE_MEM_MAX, sizeof(*mem_descr),
2265 GFP_KERNEL);
2266 if (!phba->init_mem) {
2267 kfree(phba->phwi_ctrlr);
2268 return -ENOMEM;
2269 }
2270
2271 mem_arr_orig = kmalloc(sizeof(*mem_arr_orig) * BEISCSI_MAX_FRAGS_INIT,
2272 GFP_KERNEL);
2273 if (!mem_arr_orig) {
2274 kfree(phba->init_mem);
2275 kfree(phba->phwi_ctrlr);
2276 return -ENOMEM;
2277 }
2278
2279 mem_descr = phba->init_mem;
2280 for (i = 0; i < SE_MEM_MAX; i++) {
2281 j = 0;
2282 mem_arr = mem_arr_orig;
2283 alloc_size = phba->mem_req[i];
2284 memset(mem_arr, 0, sizeof(struct mem_array) *
2285 BEISCSI_MAX_FRAGS_INIT);
2286 curr_alloc_size = min(be_max_phys_size * 1024, alloc_size);
2287 do {
2288 mem_arr->virtual_address = pci_alloc_consistent(
2289 phba->pcidev,
2290 curr_alloc_size,
2291 &bus_add);
2292 if (!mem_arr->virtual_address) {
2293 if (curr_alloc_size <= BE_MIN_MEM_SIZE)
2294 goto free_mem;
2295 if (curr_alloc_size -
2296 rounddown_pow_of_two(curr_alloc_size))
2297 curr_alloc_size = rounddown_pow_of_two
2298 (curr_alloc_size);
2299 else
2300 curr_alloc_size = curr_alloc_size / 2;
2301 } else {
2302 mem_arr->bus_address.u.
2303 a64.address = (__u64) bus_add;
2304 mem_arr->size = curr_alloc_size;
2305 alloc_size -= curr_alloc_size;
2306 curr_alloc_size = min(be_max_phys_size *
2307 1024, alloc_size);
2308 j++;
2309 mem_arr++;
2310 }
2311 } while (alloc_size);
2312 mem_descr->num_elements = j;
2313 mem_descr->size_in_bytes = phba->mem_req[i];
2314 mem_descr->mem_array = kmalloc(sizeof(*mem_arr) * j,
2315 GFP_KERNEL);
2316 if (!mem_descr->mem_array)
2317 goto free_mem;
2318
2319 memcpy(mem_descr->mem_array, mem_arr_orig,
2320 sizeof(struct mem_array) * j);
2321 mem_descr++;
2322 }
2323 kfree(mem_arr_orig);
2324 return 0;
2325 free_mem:
2326 mem_descr->num_elements = j;
2327 while ((i) || (j)) {
2328 for (j = mem_descr->num_elements; j > 0; j--) {
2329 pci_free_consistent(phba->pcidev,
2330 mem_descr->mem_array[j - 1].size,
2331 mem_descr->mem_array[j - 1].
2332 virtual_address,
2333 (unsigned long)mem_descr->
2334 mem_array[j - 1].
2335 bus_address.u.a64.address);
2336 }
2337 if (i) {
2338 i--;
2339 kfree(mem_descr->mem_array);
2340 mem_descr--;
2341 }
2342 }
2343 kfree(mem_arr_orig);
2344 kfree(phba->init_mem);
2345 kfree(phba->phwi_ctrlr);
2346 return -ENOMEM;
2347 }
2348
2349 static int beiscsi_get_memory(struct beiscsi_hba *phba)
2350 {
2351 beiscsi_find_mem_req(phba);
2352 return beiscsi_alloc_mem(phba);
2353 }
2354
2355 static void iscsi_init_global_templates(struct beiscsi_hba *phba)
2356 {
2357 struct pdu_data_out *pdata_out;
2358 struct pdu_nop_out *pnop_out;
2359 struct be_mem_descriptor *mem_descr;
2360
2361 mem_descr = phba->init_mem;
2362 mem_descr += ISCSI_MEM_GLOBAL_HEADER;
2363 pdata_out =
2364 (struct pdu_data_out *)mem_descr->mem_array[0].virtual_address;
2365 memset(pdata_out, 0, BE_ISCSI_PDU_HEADER_SIZE);
2366
2367 AMAP_SET_BITS(struct amap_pdu_data_out, opcode, pdata_out,
2368 IIOC_SCSI_DATA);
2369
2370 pnop_out =
2371 (struct pdu_nop_out *)((unsigned char *)mem_descr->mem_array[0].
2372 virtual_address + BE_ISCSI_PDU_HEADER_SIZE);
2373
2374 memset(pnop_out, 0, BE_ISCSI_PDU_HEADER_SIZE);
2375 AMAP_SET_BITS(struct amap_pdu_nop_out, ttt, pnop_out, 0xFFFFFFFF);
2376 AMAP_SET_BITS(struct amap_pdu_nop_out, f_bit, pnop_out, 1);
2377 AMAP_SET_BITS(struct amap_pdu_nop_out, i_bit, pnop_out, 0);
2378 }
2379
2380 static void beiscsi_init_wrb_handle(struct beiscsi_hba *phba)
2381 {
2382 struct be_mem_descriptor *mem_descr_wrbh, *mem_descr_wrb;
2383 struct wrb_handle *pwrb_handle;
2384 struct hwi_controller *phwi_ctrlr;
2385 struct hwi_wrb_context *pwrb_context;
2386 struct iscsi_wrb *pwrb;
2387 unsigned int num_cxn_wrbh;
2388 unsigned int num_cxn_wrb, j, idx, index;
2389
2390 mem_descr_wrbh = phba->init_mem;
2391 mem_descr_wrbh += HWI_MEM_WRBH;
2392
2393 mem_descr_wrb = phba->init_mem;
2394 mem_descr_wrb += HWI_MEM_WRB;
2395
2396 idx = 0;
2397 pwrb_handle = mem_descr_wrbh->mem_array[idx].virtual_address;
2398 num_cxn_wrbh = ((mem_descr_wrbh->mem_array[idx].size) /
2399 ((sizeof(struct wrb_handle)) *
2400 phba->params.wrbs_per_cxn));
2401 phwi_ctrlr = phba->phwi_ctrlr;
2402
2403 for (index = 0; index < phba->params.cxns_per_ctrl * 2; index += 2) {
2404 pwrb_context = &phwi_ctrlr->wrb_context[index];
2405 pwrb_context->pwrb_handle_base =
2406 kzalloc(sizeof(struct wrb_handle *) *
2407 phba->params.wrbs_per_cxn, GFP_KERNEL);
2408 pwrb_context->pwrb_handle_basestd =
2409 kzalloc(sizeof(struct wrb_handle *) *
2410 phba->params.wrbs_per_cxn, GFP_KERNEL);
2411 if (num_cxn_wrbh) {
2412 pwrb_context->alloc_index = 0;
2413 pwrb_context->wrb_handles_available = 0;
2414 for (j = 0; j < phba->params.wrbs_per_cxn; j++) {
2415 pwrb_context->pwrb_handle_base[j] = pwrb_handle;
2416 pwrb_context->pwrb_handle_basestd[j] =
2417 pwrb_handle;
2418 pwrb_context->wrb_handles_available++;
2419 pwrb_handle->wrb_index = j;
2420 pwrb_handle++;
2421 }
2422 pwrb_context->free_index = 0;
2423 num_cxn_wrbh--;
2424 } else {
2425 idx++;
2426 pwrb_handle =
2427 mem_descr_wrbh->mem_array[idx].virtual_address;
2428 num_cxn_wrbh =
2429 ((mem_descr_wrbh->mem_array[idx].size) /
2430 ((sizeof(struct wrb_handle)) *
2431 phba->params.wrbs_per_cxn));
2432 pwrb_context->alloc_index = 0;
2433 for (j = 0; j < phba->params.wrbs_per_cxn; j++) {
2434 pwrb_context->pwrb_handle_base[j] = pwrb_handle;
2435 pwrb_context->pwrb_handle_basestd[j] =
2436 pwrb_handle;
2437 pwrb_context->wrb_handles_available++;
2438 pwrb_handle->wrb_index = j;
2439 pwrb_handle++;
2440 }
2441 pwrb_context->free_index = 0;
2442 num_cxn_wrbh--;
2443 }
2444 }
2445 idx = 0;
2446 pwrb = mem_descr_wrb->mem_array[idx].virtual_address;
2447 num_cxn_wrb = (mem_descr_wrb->mem_array[idx].size) /
2448 ((sizeof(struct iscsi_wrb) *
2449 phba->params.wrbs_per_cxn));
2450 for (index = 0; index < phba->params.cxns_per_ctrl * 2; index += 2) {
2451 pwrb_context = &phwi_ctrlr->wrb_context[index];
2452 if (num_cxn_wrb) {
2453 for (j = 0; j < phba->params.wrbs_per_cxn; j++) {
2454 pwrb_handle = pwrb_context->pwrb_handle_base[j];
2455 pwrb_handle->pwrb = pwrb;
2456 pwrb++;
2457 }
2458 num_cxn_wrb--;
2459 } else {
2460 idx++;
2461 pwrb = mem_descr_wrb->mem_array[idx].virtual_address;
2462 num_cxn_wrb = (mem_descr_wrb->mem_array[idx].size) /
2463 ((sizeof(struct iscsi_wrb) *
2464 phba->params.wrbs_per_cxn));
2465 for (j = 0; j < phba->params.wrbs_per_cxn; j++) {
2466 pwrb_handle = pwrb_context->pwrb_handle_base[j];
2467 pwrb_handle->pwrb = pwrb;
2468 pwrb++;
2469 }
2470 num_cxn_wrb--;
2471 }
2472 }
2473 }
2474
2475 static void hwi_init_async_pdu_ctx(struct beiscsi_hba *phba)
2476 {
2477 struct hwi_controller *phwi_ctrlr;
2478 struct hba_parameters *p = &phba->params;
2479 struct hwi_async_pdu_context *pasync_ctx;
2480 struct async_pdu_handle *pasync_header_h, *pasync_data_h;
2481 unsigned int index;
2482 struct be_mem_descriptor *mem_descr;
2483
2484 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2485 mem_descr += HWI_MEM_ASYNC_PDU_CONTEXT;
2486
2487 phwi_ctrlr = phba->phwi_ctrlr;
2488 phwi_ctrlr->phwi_ctxt->pasync_ctx = (struct hwi_async_pdu_context *)
2489 mem_descr->mem_array[0].virtual_address;
2490 pasync_ctx = phwi_ctrlr->phwi_ctxt->pasync_ctx;
2491 memset(pasync_ctx, 0, sizeof(*pasync_ctx));
2492
2493 pasync_ctx->async_header.num_entries = p->asyncpdus_per_ctrl;
2494 pasync_ctx->async_header.buffer_size = p->defpdu_hdr_sz;
2495 pasync_ctx->async_data.buffer_size = p->defpdu_data_sz;
2496 pasync_ctx->async_data.num_entries = p->asyncpdus_per_ctrl;
2497
2498 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2499 mem_descr += HWI_MEM_ASYNC_HEADER_BUF;
2500 if (mem_descr->mem_array[0].virtual_address) {
2501 SE_DEBUG(DBG_LVL_8,
2502 "hwi_init_async_pdu_ctx HWI_MEM_ASYNC_HEADER_BUF"
2503 "va=%p\n", mem_descr->mem_array[0].virtual_address);
2504 } else
2505 shost_printk(KERN_WARNING, phba->shost,
2506 "No Virtual address\n");
2507
2508 pasync_ctx->async_header.va_base =
2509 mem_descr->mem_array[0].virtual_address;
2510
2511 pasync_ctx->async_header.pa_base.u.a64.address =
2512 mem_descr->mem_array[0].bus_address.u.a64.address;
2513
2514 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2515 mem_descr += HWI_MEM_ASYNC_HEADER_RING;
2516 if (mem_descr->mem_array[0].virtual_address) {
2517 SE_DEBUG(DBG_LVL_8,
2518 "hwi_init_async_pdu_ctx HWI_MEM_ASYNC_HEADER_RING"
2519 "va=%p\n", mem_descr->mem_array[0].virtual_address);
2520 } else
2521 shost_printk(KERN_WARNING, phba->shost,
2522 "No Virtual address\n");
2523 pasync_ctx->async_header.ring_base =
2524 mem_descr->mem_array[0].virtual_address;
2525
2526 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2527 mem_descr += HWI_MEM_ASYNC_HEADER_HANDLE;
2528 if (mem_descr->mem_array[0].virtual_address) {
2529 SE_DEBUG(DBG_LVL_8,
2530 "hwi_init_async_pdu_ctx HWI_MEM_ASYNC_HEADER_HANDLE"
2531 "va=%p\n", mem_descr->mem_array[0].virtual_address);
2532 } else
2533 shost_printk(KERN_WARNING, phba->shost,
2534 "No Virtual address\n");
2535
2536 pasync_ctx->async_header.handle_base =
2537 mem_descr->mem_array[0].virtual_address;
2538 pasync_ctx->async_header.writables = 0;
2539 INIT_LIST_HEAD(&pasync_ctx->async_header.free_list);
2540
2541 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2542 mem_descr += HWI_MEM_ASYNC_DATA_BUF;
2543 if (mem_descr->mem_array[0].virtual_address) {
2544 SE_DEBUG(DBG_LVL_8,
2545 "hwi_init_async_pdu_ctx HWI_MEM_ASYNC_DATA_BUF"
2546 "va=%p\n", mem_descr->mem_array[0].virtual_address);
2547 } else
2548 shost_printk(KERN_WARNING, phba->shost,
2549 "No Virtual address\n");
2550 pasync_ctx->async_data.va_base =
2551 mem_descr->mem_array[0].virtual_address;
2552 pasync_ctx->async_data.pa_base.u.a64.address =
2553 mem_descr->mem_array[0].bus_address.u.a64.address;
2554
2555 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2556 mem_descr += HWI_MEM_ASYNC_DATA_RING;
2557 if (mem_descr->mem_array[0].virtual_address) {
2558 SE_DEBUG(DBG_LVL_8,
2559 "hwi_init_async_pdu_ctx HWI_MEM_ASYNC_DATA_RING"
2560 "va=%p\n", mem_descr->mem_array[0].virtual_address);
2561 } else
2562 shost_printk(KERN_WARNING, phba->shost,
2563 "No Virtual address\n");
2564
2565 pasync_ctx->async_data.ring_base =
2566 mem_descr->mem_array[0].virtual_address;
2567
2568 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2569 mem_descr += HWI_MEM_ASYNC_DATA_HANDLE;
2570 if (!mem_descr->mem_array[0].virtual_address)
2571 shost_printk(KERN_WARNING, phba->shost,
2572 "No Virtual address\n");
2573
2574 pasync_ctx->async_data.handle_base =
2575 mem_descr->mem_array[0].virtual_address;
2576 pasync_ctx->async_data.writables = 0;
2577 INIT_LIST_HEAD(&pasync_ctx->async_data.free_list);
2578
2579 pasync_header_h =
2580 (struct async_pdu_handle *)pasync_ctx->async_header.handle_base;
2581 pasync_data_h =
2582 (struct async_pdu_handle *)pasync_ctx->async_data.handle_base;
2583
2584 for (index = 0; index < p->asyncpdus_per_ctrl; index++) {
2585 pasync_header_h->cri = -1;
2586 pasync_header_h->index = (char)index;
2587 INIT_LIST_HEAD(&pasync_header_h->link);
2588 pasync_header_h->pbuffer =
2589 (void *)((unsigned long)
2590 (pasync_ctx->async_header.va_base) +
2591 (p->defpdu_hdr_sz * index));
2592
2593 pasync_header_h->pa.u.a64.address =
2594 pasync_ctx->async_header.pa_base.u.a64.address +
2595 (p->defpdu_hdr_sz * index);
2596
2597 list_add_tail(&pasync_header_h->link,
2598 &pasync_ctx->async_header.free_list);
2599 pasync_header_h++;
2600 pasync_ctx->async_header.free_entries++;
2601 pasync_ctx->async_header.writables++;
2602
2603 INIT_LIST_HEAD(&pasync_ctx->async_entry[index].wait_queue.list);
2604 INIT_LIST_HEAD(&pasync_ctx->async_entry[index].
2605 header_busy_list);
2606 pasync_data_h->cri = -1;
2607 pasync_data_h->index = (char)index;
2608 INIT_LIST_HEAD(&pasync_data_h->link);
2609 pasync_data_h->pbuffer =
2610 (void *)((unsigned long)
2611 (pasync_ctx->async_data.va_base) +
2612 (p->defpdu_data_sz * index));
2613
2614 pasync_data_h->pa.u.a64.address =
2615 pasync_ctx->async_data.pa_base.u.a64.address +
2616 (p->defpdu_data_sz * index);
2617
2618 list_add_tail(&pasync_data_h->link,
2619 &pasync_ctx->async_data.free_list);
2620 pasync_data_h++;
2621 pasync_ctx->async_data.free_entries++;
2622 pasync_ctx->async_data.writables++;
2623
2624 INIT_LIST_HEAD(&pasync_ctx->async_entry[index].data_busy_list);
2625 }
2626
2627 pasync_ctx->async_header.host_write_ptr = 0;
2628 pasync_ctx->async_header.ep_read_ptr = -1;
2629 pasync_ctx->async_data.host_write_ptr = 0;
2630 pasync_ctx->async_data.ep_read_ptr = -1;
2631 }
2632
2633 static int
2634 be_sgl_create_contiguous(void *virtual_address,
2635 u64 physical_address, u32 length,
2636 struct be_dma_mem *sgl)
2637 {
2638 WARN_ON(!virtual_address);
2639 WARN_ON(!physical_address);
2640 WARN_ON(!length > 0);
2641 WARN_ON(!sgl);
2642
2643 sgl->va = virtual_address;
2644 sgl->dma = (unsigned long)physical_address;
2645 sgl->size = length;
2646
2647 return 0;
2648 }
2649
2650 static void be_sgl_destroy_contiguous(struct be_dma_mem *sgl)
2651 {
2652 memset(sgl, 0, sizeof(*sgl));
2653 }
2654
2655 static void
2656 hwi_build_be_sgl_arr(struct beiscsi_hba *phba,
2657 struct mem_array *pmem, struct be_dma_mem *sgl)
2658 {
2659 if (sgl->va)
2660 be_sgl_destroy_contiguous(sgl);
2661
2662 be_sgl_create_contiguous(pmem->virtual_address,
2663 pmem->bus_address.u.a64.address,
2664 pmem->size, sgl);
2665 }
2666
2667 static void
2668 hwi_build_be_sgl_by_offset(struct beiscsi_hba *phba,
2669 struct mem_array *pmem, struct be_dma_mem *sgl)
2670 {
2671 if (sgl->va)
2672 be_sgl_destroy_contiguous(sgl);
2673
2674 be_sgl_create_contiguous((unsigned char *)pmem->virtual_address,
2675 pmem->bus_address.u.a64.address,
2676 pmem->size, sgl);
2677 }
2678
2679 static int be_fill_queue(struct be_queue_info *q,
2680 u16 len, u16 entry_size, void *vaddress)
2681 {
2682 struct be_dma_mem *mem = &q->dma_mem;
2683
2684 memset(q, 0, sizeof(*q));
2685 q->len = len;
2686 q->entry_size = entry_size;
2687 mem->size = len * entry_size;
2688 mem->va = vaddress;
2689 if (!mem->va)
2690 return -ENOMEM;
2691 memset(mem->va, 0, mem->size);
2692 return 0;
2693 }
2694
2695 static int beiscsi_create_eqs(struct beiscsi_hba *phba,
2696 struct hwi_context_memory *phwi_context)
2697 {
2698 unsigned int i, num_eq_pages;
2699 int ret, eq_for_mcc;
2700 struct be_queue_info *eq;
2701 struct be_dma_mem *mem;
2702 void *eq_vaddress;
2703 dma_addr_t paddr;
2704
2705 num_eq_pages = PAGES_REQUIRED(phba->params.num_eq_entries * \
2706 sizeof(struct be_eq_entry));
2707
2708 if (phba->msix_enabled)
2709 eq_for_mcc = 1;
2710 else
2711 eq_for_mcc = 0;
2712 for (i = 0; i < (phba->num_cpus + eq_for_mcc); i++) {
2713 eq = &phwi_context->be_eq[i].q;
2714 mem = &eq->dma_mem;
2715 phwi_context->be_eq[i].phba = phba;
2716 eq_vaddress = pci_alloc_consistent(phba->pcidev,
2717 num_eq_pages * PAGE_SIZE,
2718 &paddr);
2719 if (!eq_vaddress)
2720 goto create_eq_error;
2721
2722 mem->va = eq_vaddress;
2723 ret = be_fill_queue(eq, phba->params.num_eq_entries,
2724 sizeof(struct be_eq_entry), eq_vaddress);
2725 if (ret) {
2726 shost_printk(KERN_ERR, phba->shost,
2727 "be_fill_queue Failed for EQ\n");
2728 goto create_eq_error;
2729 }
2730
2731 mem->dma = paddr;
2732 ret = beiscsi_cmd_eq_create(&phba->ctrl, eq,
2733 phwi_context->cur_eqd);
2734 if (ret) {
2735 shost_printk(KERN_ERR, phba->shost,
2736 "beiscsi_cmd_eq_create"
2737 "Failedfor EQ\n");
2738 goto create_eq_error;
2739 }
2740 SE_DEBUG(DBG_LVL_8, "eqid = %d\n", phwi_context->be_eq[i].q.id);
2741 }
2742 return 0;
2743 create_eq_error:
2744 for (i = 0; i < (phba->num_cpus + 1); i++) {
2745 eq = &phwi_context->be_eq[i].q;
2746 mem = &eq->dma_mem;
2747 if (mem->va)
2748 pci_free_consistent(phba->pcidev, num_eq_pages
2749 * PAGE_SIZE,
2750 mem->va, mem->dma);
2751 }
2752 return ret;
2753 }
2754
2755 static int beiscsi_create_cqs(struct beiscsi_hba *phba,
2756 struct hwi_context_memory *phwi_context)
2757 {
2758 unsigned int i, num_cq_pages;
2759 int ret;
2760 struct be_queue_info *cq, *eq;
2761 struct be_dma_mem *mem;
2762 struct be_eq_obj *pbe_eq;
2763 void *cq_vaddress;
2764 dma_addr_t paddr;
2765
2766 num_cq_pages = PAGES_REQUIRED(phba->params.num_cq_entries * \
2767 sizeof(struct sol_cqe));
2768
2769 for (i = 0; i < phba->num_cpus; i++) {
2770 cq = &phwi_context->be_cq[i];
2771 eq = &phwi_context->be_eq[i].q;
2772 pbe_eq = &phwi_context->be_eq[i];
2773 pbe_eq->cq = cq;
2774 pbe_eq->phba = phba;
2775 mem = &cq->dma_mem;
2776 cq_vaddress = pci_alloc_consistent(phba->pcidev,
2777 num_cq_pages * PAGE_SIZE,
2778 &paddr);
2779 if (!cq_vaddress)
2780 goto create_cq_error;
2781 ret = be_fill_queue(cq, phba->params.num_cq_entries,
2782 sizeof(struct sol_cqe), cq_vaddress);
2783 if (ret) {
2784 shost_printk(KERN_ERR, phba->shost,
2785 "be_fill_queue Failed for ISCSI CQ\n");
2786 goto create_cq_error;
2787 }
2788
2789 mem->dma = paddr;
2790 ret = beiscsi_cmd_cq_create(&phba->ctrl, cq, eq, false,
2791 false, 0);
2792 if (ret) {
2793 shost_printk(KERN_ERR, phba->shost,
2794 "beiscsi_cmd_eq_create"
2795 "Failed for ISCSI CQ\n");
2796 goto create_cq_error;
2797 }
2798 SE_DEBUG(DBG_LVL_8, "iscsi cq_id is %d for eq_id %d\n",
2799 cq->id, eq->id);
2800 SE_DEBUG(DBG_LVL_8, "ISCSI CQ CREATED\n");
2801 }
2802 return 0;
2803
2804 create_cq_error:
2805 for (i = 0; i < phba->num_cpus; i++) {
2806 cq = &phwi_context->be_cq[i];
2807 mem = &cq->dma_mem;
2808 if (mem->va)
2809 pci_free_consistent(phba->pcidev, num_cq_pages
2810 * PAGE_SIZE,
2811 mem->va, mem->dma);
2812 }
2813 return ret;
2814
2815 }
2816
2817 static int
2818 beiscsi_create_def_hdr(struct beiscsi_hba *phba,
2819 struct hwi_context_memory *phwi_context,
2820 struct hwi_controller *phwi_ctrlr,
2821 unsigned int def_pdu_ring_sz)
2822 {
2823 unsigned int idx;
2824 int ret;
2825 struct be_queue_info *dq, *cq;
2826 struct be_dma_mem *mem;
2827 struct be_mem_descriptor *mem_descr;
2828 void *dq_vaddress;
2829
2830 idx = 0;
2831 dq = &phwi_context->be_def_hdrq;
2832 cq = &phwi_context->be_cq[0];
2833 mem = &dq->dma_mem;
2834 mem_descr = phba->init_mem;
2835 mem_descr += HWI_MEM_ASYNC_HEADER_RING;
2836 dq_vaddress = mem_descr->mem_array[idx].virtual_address;
2837 ret = be_fill_queue(dq, mem_descr->mem_array[0].size /
2838 sizeof(struct phys_addr),
2839 sizeof(struct phys_addr), dq_vaddress);
2840 if (ret) {
2841 shost_printk(KERN_ERR, phba->shost,
2842 "be_fill_queue Failed for DEF PDU HDR\n");
2843 return ret;
2844 }
2845 mem->dma = (unsigned long)mem_descr->mem_array[idx].
2846 bus_address.u.a64.address;
2847 ret = be_cmd_create_default_pdu_queue(&phba->ctrl, cq, dq,
2848 def_pdu_ring_sz,
2849 phba->params.defpdu_hdr_sz);
2850 if (ret) {
2851 shost_printk(KERN_ERR, phba->shost,
2852 "be_cmd_create_default_pdu_queue Failed DEFHDR\n");
2853 return ret;
2854 }
2855 phwi_ctrlr->default_pdu_hdr.id = phwi_context->be_def_hdrq.id;
2856 SE_DEBUG(DBG_LVL_8, "iscsi def pdu id is %d\n",
2857 phwi_context->be_def_hdrq.id);
2858 hwi_post_async_buffers(phba, 1);
2859 return 0;
2860 }
2861
2862 static int
2863 beiscsi_create_def_data(struct beiscsi_hba *phba,
2864 struct hwi_context_memory *phwi_context,
2865 struct hwi_controller *phwi_ctrlr,
2866 unsigned int def_pdu_ring_sz)
2867 {
2868 unsigned int idx;
2869 int ret;
2870 struct be_queue_info *dataq, *cq;
2871 struct be_dma_mem *mem;
2872 struct be_mem_descriptor *mem_descr;
2873 void *dq_vaddress;
2874
2875 idx = 0;
2876 dataq = &phwi_context->be_def_dataq;
2877 cq = &phwi_context->be_cq[0];
2878 mem = &dataq->dma_mem;
2879 mem_descr = phba->init_mem;
2880 mem_descr += HWI_MEM_ASYNC_DATA_RING;
2881 dq_vaddress = mem_descr->mem_array[idx].virtual_address;
2882 ret = be_fill_queue(dataq, mem_descr->mem_array[0].size /
2883 sizeof(struct phys_addr),
2884 sizeof(struct phys_addr), dq_vaddress);
2885 if (ret) {
2886 shost_printk(KERN_ERR, phba->shost,
2887 "be_fill_queue Failed for DEF PDU DATA\n");
2888 return ret;
2889 }
2890 mem->dma = (unsigned long)mem_descr->mem_array[idx].
2891 bus_address.u.a64.address;
2892 ret = be_cmd_create_default_pdu_queue(&phba->ctrl, cq, dataq,
2893 def_pdu_ring_sz,
2894 phba->params.defpdu_data_sz);
2895 if (ret) {
2896 shost_printk(KERN_ERR, phba->shost,
2897 "be_cmd_create_default_pdu_queue Failed"
2898 " for DEF PDU DATA\n");
2899 return ret;
2900 }
2901 phwi_ctrlr->default_pdu_data.id = phwi_context->be_def_dataq.id;
2902 SE_DEBUG(DBG_LVL_8, "iscsi def data id is %d\n",
2903 phwi_context->be_def_dataq.id);
2904 hwi_post_async_buffers(phba, 0);
2905 SE_DEBUG(DBG_LVL_8, "DEFAULT PDU DATA RING CREATED\n");
2906 return 0;
2907 }
2908
2909 static int
2910 beiscsi_post_pages(struct beiscsi_hba *phba)
2911 {
2912 struct be_mem_descriptor *mem_descr;
2913 struct mem_array *pm_arr;
2914 unsigned int page_offset, i;
2915 struct be_dma_mem sgl;
2916 int status;
2917
2918 mem_descr = phba->init_mem;
2919 mem_descr += HWI_MEM_SGE;
2920 pm_arr = mem_descr->mem_array;
2921
2922 page_offset = (sizeof(struct iscsi_sge) * phba->params.num_sge_per_io *
2923 phba->fw_config.iscsi_icd_start) / PAGE_SIZE;
2924 for (i = 0; i < mem_descr->num_elements; i++) {
2925 hwi_build_be_sgl_arr(phba, pm_arr, &sgl);
2926 status = be_cmd_iscsi_post_sgl_pages(&phba->ctrl, &sgl,
2927 page_offset,
2928 (pm_arr->size / PAGE_SIZE));
2929 page_offset += pm_arr->size / PAGE_SIZE;
2930 if (status != 0) {
2931 shost_printk(KERN_ERR, phba->shost,
2932 "post sgl failed.\n");
2933 return status;
2934 }
2935 pm_arr++;
2936 }
2937 SE_DEBUG(DBG_LVL_8, "POSTED PAGES\n");
2938 return 0;
2939 }
2940
2941 static void be_queue_free(struct beiscsi_hba *phba, struct be_queue_info *q)
2942 {
2943 struct be_dma_mem *mem = &q->dma_mem;
2944 if (mem->va)
2945 pci_free_consistent(phba->pcidev, mem->size,
2946 mem->va, mem->dma);
2947 }
2948
2949 static int be_queue_alloc(struct beiscsi_hba *phba, struct be_queue_info *q,
2950 u16 len, u16 entry_size)
2951 {
2952 struct be_dma_mem *mem = &q->dma_mem;
2953
2954 memset(q, 0, sizeof(*q));
2955 q->len = len;
2956 q->entry_size = entry_size;
2957 mem->size = len * entry_size;
2958 mem->va = pci_alloc_consistent(phba->pcidev, mem->size, &mem->dma);
2959 if (!mem->va)
2960 return -ENOMEM;
2961 memset(mem->va, 0, mem->size);
2962 return 0;
2963 }
2964
2965 static int
2966 beiscsi_create_wrb_rings(struct beiscsi_hba *phba,
2967 struct hwi_context_memory *phwi_context,
2968 struct hwi_controller *phwi_ctrlr)
2969 {
2970 unsigned int wrb_mem_index, offset, size, num_wrb_rings;
2971 u64 pa_addr_lo;
2972 unsigned int idx, num, i;
2973 struct mem_array *pwrb_arr;
2974 void *wrb_vaddr;
2975 struct be_dma_mem sgl;
2976 struct be_mem_descriptor *mem_descr;
2977 int status;
2978
2979 idx = 0;
2980 mem_descr = phba->init_mem;
2981 mem_descr += HWI_MEM_WRB;
2982 pwrb_arr = kmalloc(sizeof(*pwrb_arr) * phba->params.cxns_per_ctrl,
2983 GFP_KERNEL);
2984 if (!pwrb_arr) {
2985 shost_printk(KERN_ERR, phba->shost,
2986 "Memory alloc failed in create wrb ring.\n");
2987 return -ENOMEM;
2988 }
2989 wrb_vaddr = mem_descr->mem_array[idx].virtual_address;
2990 pa_addr_lo = mem_descr->mem_array[idx].bus_address.u.a64.address;
2991 num_wrb_rings = mem_descr->mem_array[idx].size /
2992 (phba->params.wrbs_per_cxn * sizeof(struct iscsi_wrb));
2993
2994 for (num = 0; num < phba->params.cxns_per_ctrl; num++) {
2995 if (num_wrb_rings) {
2996 pwrb_arr[num].virtual_address = wrb_vaddr;
2997 pwrb_arr[num].bus_address.u.a64.address = pa_addr_lo;
2998 pwrb_arr[num].size = phba->params.wrbs_per_cxn *
2999 sizeof(struct iscsi_wrb);
3000 wrb_vaddr += pwrb_arr[num].size;
3001 pa_addr_lo += pwrb_arr[num].size;
3002 num_wrb_rings--;
3003 } else {
3004 idx++;
3005 wrb_vaddr = mem_descr->mem_array[idx].virtual_address;
3006 pa_addr_lo = mem_descr->mem_array[idx].\
3007 bus_address.u.a64.address;
3008 num_wrb_rings = mem_descr->mem_array[idx].size /
3009 (phba->params.wrbs_per_cxn *
3010 sizeof(struct iscsi_wrb));
3011 pwrb_arr[num].virtual_address = wrb_vaddr;
3012 pwrb_arr[num].bus_address.u.a64.address\
3013 = pa_addr_lo;
3014 pwrb_arr[num].size = phba->params.wrbs_per_cxn *
3015 sizeof(struct iscsi_wrb);
3016 wrb_vaddr += pwrb_arr[num].size;
3017 pa_addr_lo += pwrb_arr[num].size;
3018 num_wrb_rings--;
3019 }
3020 }
3021 for (i = 0; i < phba->params.cxns_per_ctrl; i++) {
3022 wrb_mem_index = 0;
3023 offset = 0;
3024 size = 0;
3025
3026 hwi_build_be_sgl_by_offset(phba, &pwrb_arr[i], &sgl);
3027 status = be_cmd_wrbq_create(&phba->ctrl, &sgl,
3028 &phwi_context->be_wrbq[i]);
3029 if (status != 0) {
3030 shost_printk(KERN_ERR, phba->shost,
3031 "wrbq create failed.");
3032 kfree(pwrb_arr);
3033 return status;
3034 }
3035 phwi_ctrlr->wrb_context[i * 2].cid = phwi_context->be_wrbq[i].
3036 id;
3037 }
3038 kfree(pwrb_arr);
3039 return 0;
3040 }
3041
3042 static void free_wrb_handles(struct beiscsi_hba *phba)
3043 {
3044 unsigned int index;
3045 struct hwi_controller *phwi_ctrlr;
3046 struct hwi_wrb_context *pwrb_context;
3047
3048 phwi_ctrlr = phba->phwi_ctrlr;
3049 for (index = 0; index < phba->params.cxns_per_ctrl * 2; index += 2) {
3050 pwrb_context = &phwi_ctrlr->wrb_context[index];
3051 kfree(pwrb_context->pwrb_handle_base);
3052 kfree(pwrb_context->pwrb_handle_basestd);
3053 }
3054 }
3055
3056 static void be_mcc_queues_destroy(struct beiscsi_hba *phba)
3057 {
3058 struct be_queue_info *q;
3059 struct be_ctrl_info *ctrl = &phba->ctrl;
3060
3061 q = &phba->ctrl.mcc_obj.q;
3062 if (q->created)
3063 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_MCCQ);
3064 be_queue_free(phba, q);
3065
3066 q = &phba->ctrl.mcc_obj.cq;
3067 if (q->created)
3068 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_CQ);
3069 be_queue_free(phba, q);
3070 }
3071
3072 static void hwi_cleanup(struct beiscsi_hba *phba)
3073 {
3074 struct be_queue_info *q;
3075 struct be_ctrl_info *ctrl = &phba->ctrl;
3076 struct hwi_controller *phwi_ctrlr;
3077 struct hwi_context_memory *phwi_context;
3078 int i, eq_num;
3079
3080 phwi_ctrlr = phba->phwi_ctrlr;
3081 phwi_context = phwi_ctrlr->phwi_ctxt;
3082 for (i = 0; i < phba->params.cxns_per_ctrl; i++) {
3083 q = &phwi_context->be_wrbq[i];
3084 if (q->created)
3085 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_WRBQ);
3086 }
3087 free_wrb_handles(phba);
3088
3089 q = &phwi_context->be_def_hdrq;
3090 if (q->created)
3091 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_DPDUQ);
3092
3093 q = &phwi_context->be_def_dataq;
3094 if (q->created)
3095 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_DPDUQ);
3096
3097 beiscsi_cmd_q_destroy(ctrl, NULL, QTYPE_SGL);
3098
3099 for (i = 0; i < (phba->num_cpus); i++) {
3100 q = &phwi_context->be_cq[i];
3101 if (q->created)
3102 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_CQ);
3103 }
3104 if (phba->msix_enabled)
3105 eq_num = 1;
3106 else
3107 eq_num = 0;
3108 for (i = 0; i < (phba->num_cpus + eq_num); i++) {
3109 q = &phwi_context->be_eq[i].q;
3110 if (q->created)
3111 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_EQ);
3112 }
3113 be_mcc_queues_destroy(phba);
3114 }
3115
3116 static int be_mcc_queues_create(struct beiscsi_hba *phba,
3117 struct hwi_context_memory *phwi_context)
3118 {
3119 struct be_queue_info *q, *cq;
3120 struct be_ctrl_info *ctrl = &phba->ctrl;
3121
3122 /* Alloc MCC compl queue */
3123 cq = &phba->ctrl.mcc_obj.cq;
3124 if (be_queue_alloc(phba, cq, MCC_CQ_LEN,
3125 sizeof(struct be_mcc_compl)))
3126 goto err;
3127 /* Ask BE to create MCC compl queue; */
3128 if (phba->msix_enabled) {
3129 if (beiscsi_cmd_cq_create(ctrl, cq, &phwi_context->be_eq
3130 [phba->num_cpus].q, false, true, 0))
3131 goto mcc_cq_free;
3132 } else {
3133 if (beiscsi_cmd_cq_create(ctrl, cq, &phwi_context->be_eq[0].q,
3134 false, true, 0))
3135 goto mcc_cq_free;
3136 }
3137
3138 /* Alloc MCC queue */
3139 q = &phba->ctrl.mcc_obj.q;
3140 if (be_queue_alloc(phba, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
3141 goto mcc_cq_destroy;
3142
3143 /* Ask BE to create MCC queue */
3144 if (beiscsi_cmd_mccq_create(phba, q, cq))
3145 goto mcc_q_free;
3146
3147 return 0;
3148
3149 mcc_q_free:
3150 be_queue_free(phba, q);
3151 mcc_cq_destroy:
3152 beiscsi_cmd_q_destroy(ctrl, cq, QTYPE_CQ);
3153 mcc_cq_free:
3154 be_queue_free(phba, cq);
3155 err:
3156 return -ENOMEM;
3157 }
3158
3159 static int find_num_cpus(void)
3160 {
3161 int num_cpus = 0;
3162
3163 num_cpus = num_online_cpus();
3164 if (num_cpus >= MAX_CPUS)
3165 num_cpus = MAX_CPUS - 1;
3166
3167 SE_DEBUG(DBG_LVL_8, "num_cpus = %d\n", num_cpus);
3168 return num_cpus;
3169 }
3170
3171 static int hwi_init_port(struct beiscsi_hba *phba)
3172 {
3173 struct hwi_controller *phwi_ctrlr;
3174 struct hwi_context_memory *phwi_context;
3175 unsigned int def_pdu_ring_sz;
3176 struct be_ctrl_info *ctrl = &phba->ctrl;
3177 int status;
3178
3179 def_pdu_ring_sz =
3180 phba->params.asyncpdus_per_ctrl * sizeof(struct phys_addr);
3181 phwi_ctrlr = phba->phwi_ctrlr;
3182 phwi_context = phwi_ctrlr->phwi_ctxt;
3183 phwi_context->max_eqd = 0;
3184 phwi_context->min_eqd = 0;
3185 phwi_context->cur_eqd = 64;
3186 be_cmd_fw_initialize(&phba->ctrl);
3187
3188 status = beiscsi_create_eqs(phba, phwi_context);
3189 if (status != 0) {
3190 shost_printk(KERN_ERR, phba->shost, "EQ not created\n");
3191 goto error;
3192 }
3193
3194 status = be_mcc_queues_create(phba, phwi_context);
3195 if (status != 0)
3196 goto error;
3197
3198 status = mgmt_check_supported_fw(ctrl, phba);
3199 if (status != 0) {
3200 shost_printk(KERN_ERR, phba->shost,
3201 "Unsupported fw version\n");
3202 goto error;
3203 }
3204
3205 status = beiscsi_create_cqs(phba, phwi_context);
3206 if (status != 0) {
3207 shost_printk(KERN_ERR, phba->shost, "CQ not created\n");
3208 goto error;
3209 }
3210
3211 status = beiscsi_create_def_hdr(phba, phwi_context, phwi_ctrlr,
3212 def_pdu_ring_sz);
3213 if (status != 0) {
3214 shost_printk(KERN_ERR, phba->shost,
3215 "Default Header not created\n");
3216 goto error;
3217 }
3218
3219 status = beiscsi_create_def_data(phba, phwi_context,
3220 phwi_ctrlr, def_pdu_ring_sz);
3221 if (status != 0) {
3222 shost_printk(KERN_ERR, phba->shost,
3223 "Default Data not created\n");
3224 goto error;
3225 }
3226
3227 status = beiscsi_post_pages(phba);
3228 if (status != 0) {
3229 shost_printk(KERN_ERR, phba->shost, "Post SGL Pages Failed\n");
3230 goto error;
3231 }
3232
3233 status = beiscsi_create_wrb_rings(phba, phwi_context, phwi_ctrlr);
3234 if (status != 0) {
3235 shost_printk(KERN_ERR, phba->shost,
3236 "WRB Rings not created\n");
3237 goto error;
3238 }
3239
3240 SE_DEBUG(DBG_LVL_8, "hwi_init_port success\n");
3241 return 0;
3242
3243 error:
3244 shost_printk(KERN_ERR, phba->shost, "hwi_init_port failed");
3245 hwi_cleanup(phba);
3246 return -ENOMEM;
3247 }
3248
3249 static int hwi_init_controller(struct beiscsi_hba *phba)
3250 {
3251 struct hwi_controller *phwi_ctrlr;
3252
3253 phwi_ctrlr = phba->phwi_ctrlr;
3254 if (1 == phba->init_mem[HWI_MEM_ADDN_CONTEXT].num_elements) {
3255 phwi_ctrlr->phwi_ctxt = (struct hwi_context_memory *)phba->
3256 init_mem[HWI_MEM_ADDN_CONTEXT].mem_array[0].virtual_address;
3257 SE_DEBUG(DBG_LVL_8, " phwi_ctrlr->phwi_ctxt=%p\n",
3258 phwi_ctrlr->phwi_ctxt);
3259 } else {
3260 shost_printk(KERN_ERR, phba->shost,
3261 "HWI_MEM_ADDN_CONTEXT is more than one element."
3262 "Failing to load\n");
3263 return -ENOMEM;
3264 }
3265
3266 iscsi_init_global_templates(phba);
3267 beiscsi_init_wrb_handle(phba);
3268 hwi_init_async_pdu_ctx(phba);
3269 if (hwi_init_port(phba) != 0) {
3270 shost_printk(KERN_ERR, phba->shost,
3271 "hwi_init_controller failed\n");
3272 return -ENOMEM;
3273 }
3274 return 0;
3275 }
3276
3277 static void beiscsi_free_mem(struct beiscsi_hba *phba)
3278 {
3279 struct be_mem_descriptor *mem_descr;
3280 int i, j;
3281
3282 mem_descr = phba->init_mem;
3283 i = 0;
3284 j = 0;
3285 for (i = 0; i < SE_MEM_MAX; i++) {
3286 for (j = mem_descr->num_elements; j > 0; j--) {
3287 pci_free_consistent(phba->pcidev,
3288 mem_descr->mem_array[j - 1].size,
3289 mem_descr->mem_array[j - 1].virtual_address,
3290 (unsigned long)mem_descr->mem_array[j - 1].
3291 bus_address.u.a64.address);
3292 }
3293 kfree(mem_descr->mem_array);
3294 mem_descr++;
3295 }
3296 kfree(phba->init_mem);
3297 kfree(phba->phwi_ctrlr);
3298 }
3299
3300 static int beiscsi_init_controller(struct beiscsi_hba *phba)
3301 {
3302 int ret = -ENOMEM;
3303
3304 ret = beiscsi_get_memory(phba);
3305 if (ret < 0) {
3306 shost_printk(KERN_ERR, phba->shost, "beiscsi_dev_probe -"
3307 "Failed in beiscsi_alloc_memory\n");
3308 return ret;
3309 }
3310
3311 ret = hwi_init_controller(phba);
3312 if (ret)
3313 goto free_init;
3314 SE_DEBUG(DBG_LVL_8, "Return success from beiscsi_init_controller");
3315 return 0;
3316
3317 free_init:
3318 beiscsi_free_mem(phba);
3319 return -ENOMEM;
3320 }
3321
3322 static int beiscsi_init_sgl_handle(struct beiscsi_hba *phba)
3323 {
3324 struct be_mem_descriptor *mem_descr_sglh, *mem_descr_sg;
3325 struct sgl_handle *psgl_handle;
3326 struct iscsi_sge *pfrag;
3327 unsigned int arr_index, i, idx;
3328
3329 phba->io_sgl_hndl_avbl = 0;
3330 phba->eh_sgl_hndl_avbl = 0;
3331
3332 mem_descr_sglh = phba->init_mem;
3333 mem_descr_sglh += HWI_MEM_SGLH;
3334 if (1 == mem_descr_sglh->num_elements) {
3335 phba->io_sgl_hndl_base = kzalloc(sizeof(struct sgl_handle *) *
3336 phba->params.ios_per_ctrl,
3337 GFP_KERNEL);
3338 if (!phba->io_sgl_hndl_base) {
3339 shost_printk(KERN_ERR, phba->shost,
3340 "Mem Alloc Failed. Failing to load\n");
3341 return -ENOMEM;
3342 }
3343 phba->eh_sgl_hndl_base = kzalloc(sizeof(struct sgl_handle *) *
3344 (phba->params.icds_per_ctrl -
3345 phba->params.ios_per_ctrl),
3346 GFP_KERNEL);
3347 if (!phba->eh_sgl_hndl_base) {
3348 kfree(phba->io_sgl_hndl_base);
3349 shost_printk(KERN_ERR, phba->shost,
3350 "Mem Alloc Failed. Failing to load\n");
3351 return -ENOMEM;
3352 }
3353 } else {
3354 shost_printk(KERN_ERR, phba->shost,
3355 "HWI_MEM_SGLH is more than one element."
3356 "Failing to load\n");
3357 return -ENOMEM;
3358 }
3359
3360 arr_index = 0;
3361 idx = 0;
3362 while (idx < mem_descr_sglh->num_elements) {
3363 psgl_handle = mem_descr_sglh->mem_array[idx].virtual_address;
3364
3365 for (i = 0; i < (mem_descr_sglh->mem_array[idx].size /
3366 sizeof(struct sgl_handle)); i++) {
3367 if (arr_index < phba->params.ios_per_ctrl) {
3368 phba->io_sgl_hndl_base[arr_index] = psgl_handle;
3369 phba->io_sgl_hndl_avbl++;
3370 arr_index++;
3371 } else {
3372 phba->eh_sgl_hndl_base[arr_index -
3373 phba->params.ios_per_ctrl] =
3374 psgl_handle;
3375 arr_index++;
3376 phba->eh_sgl_hndl_avbl++;
3377 }
3378 psgl_handle++;
3379 }
3380 idx++;
3381 }
3382 SE_DEBUG(DBG_LVL_8,
3383 "phba->io_sgl_hndl_avbl=%d"
3384 "phba->eh_sgl_hndl_avbl=%d\n",
3385 phba->io_sgl_hndl_avbl,
3386 phba->eh_sgl_hndl_avbl);
3387 mem_descr_sg = phba->init_mem;
3388 mem_descr_sg += HWI_MEM_SGE;
3389 SE_DEBUG(DBG_LVL_8, "\n mem_descr_sg->num_elements=%d\n",
3390 mem_descr_sg->num_elements);
3391 arr_index = 0;
3392 idx = 0;
3393 while (idx < mem_descr_sg->num_elements) {
3394 pfrag = mem_descr_sg->mem_array[idx].virtual_address;
3395
3396 for (i = 0;
3397 i < (mem_descr_sg->mem_array[idx].size) /
3398 (sizeof(struct iscsi_sge) * phba->params.num_sge_per_io);
3399 i++) {
3400 if (arr_index < phba->params.ios_per_ctrl)
3401 psgl_handle = phba->io_sgl_hndl_base[arr_index];
3402 else
3403 psgl_handle = phba->eh_sgl_hndl_base[arr_index -
3404 phba->params.ios_per_ctrl];
3405 psgl_handle->pfrag = pfrag;
3406 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, pfrag, 0);
3407 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, pfrag, 0);
3408 pfrag += phba->params.num_sge_per_io;
3409 psgl_handle->sgl_index =
3410 phba->fw_config.iscsi_icd_start + arr_index++;
3411 }
3412 idx++;
3413 }
3414 phba->io_sgl_free_index = 0;
3415 phba->io_sgl_alloc_index = 0;
3416 phba->eh_sgl_free_index = 0;
3417 phba->eh_sgl_alloc_index = 0;
3418 return 0;
3419 }
3420
3421 static int hba_setup_cid_tbls(struct beiscsi_hba *phba)
3422 {
3423 int i, new_cid;
3424
3425 phba->cid_array = kzalloc(sizeof(void *) * phba->params.cxns_per_ctrl,
3426 GFP_KERNEL);
3427 if (!phba->cid_array) {
3428 shost_printk(KERN_ERR, phba->shost,
3429 "Failed to allocate memory in "
3430 "hba_setup_cid_tbls\n");
3431 return -ENOMEM;
3432 }
3433 phba->ep_array = kzalloc(sizeof(struct iscsi_endpoint *) *
3434 phba->params.cxns_per_ctrl * 2, GFP_KERNEL);
3435 if (!phba->ep_array) {
3436 shost_printk(KERN_ERR, phba->shost,
3437 "Failed to allocate memory in "
3438 "hba_setup_cid_tbls\n");
3439 kfree(phba->cid_array);
3440 return -ENOMEM;
3441 }
3442 new_cid = phba->fw_config.iscsi_cid_start;
3443 for (i = 0; i < phba->params.cxns_per_ctrl; i++) {
3444 phba->cid_array[i] = new_cid;
3445 new_cid += 2;
3446 }
3447 phba->avlbl_cids = phba->params.cxns_per_ctrl;
3448 return 0;
3449 }
3450
3451 static void hwi_enable_intr(struct beiscsi_hba *phba)
3452 {
3453 struct be_ctrl_info *ctrl = &phba->ctrl;
3454 struct hwi_controller *phwi_ctrlr;
3455 struct hwi_context_memory *phwi_context;
3456 struct be_queue_info *eq;
3457 u8 __iomem *addr;
3458 u32 reg, i;
3459 u32 enabled;
3460
3461 phwi_ctrlr = phba->phwi_ctrlr;
3462 phwi_context = phwi_ctrlr->phwi_ctxt;
3463
3464 addr = (u8 __iomem *) ((u8 __iomem *) ctrl->pcicfg +
3465 PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET);
3466 reg = ioread32(addr);
3467 SE_DEBUG(DBG_LVL_8, "reg =x%08x\n", reg);
3468
3469 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
3470 if (!enabled) {
3471 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
3472 SE_DEBUG(DBG_LVL_8, "reg =x%08x addr=%p\n", reg, addr);
3473 iowrite32(reg, addr);
3474 if (!phba->msix_enabled) {
3475 eq = &phwi_context->be_eq[0].q;
3476 SE_DEBUG(DBG_LVL_8, "eq->id=%d\n", eq->id);
3477 hwi_ring_eq_db(phba, eq->id, 0, 0, 1, 1);
3478 } else {
3479 for (i = 0; i <= phba->num_cpus; i++) {
3480 eq = &phwi_context->be_eq[i].q;
3481 SE_DEBUG(DBG_LVL_8, "eq->id=%d\n", eq->id);
3482 hwi_ring_eq_db(phba, eq->id, 0, 0, 1, 1);
3483 }
3484 }
3485 }
3486 }
3487
3488 static void hwi_disable_intr(struct beiscsi_hba *phba)
3489 {
3490 struct be_ctrl_info *ctrl = &phba->ctrl;
3491
3492 u8 __iomem *addr = ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
3493 u32 reg = ioread32(addr);
3494
3495 u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
3496 if (enabled) {
3497 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
3498 iowrite32(reg, addr);
3499 } else
3500 shost_printk(KERN_WARNING, phba->shost,
3501 "In hwi_disable_intr, Already Disabled\n");
3502 }
3503
3504 static int beiscsi_get_boot_info(struct beiscsi_hba *phba)
3505 {
3506 struct be_cmd_resp_get_boot_target *boot_resp;
3507 struct be_cmd_resp_get_session *session_resp;
3508 struct be_mcc_wrb *wrb;
3509 struct be_dma_mem nonemb_cmd;
3510 unsigned int tag, wrb_num;
3511 unsigned short status, extd_status;
3512 struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q;
3513
3514 tag = beiscsi_get_boot_target(phba);
3515 if (!tag) {
3516 SE_DEBUG(DBG_LVL_1, "be_cmd_get_mac_addr Failed\n");
3517 return -EAGAIN;
3518 } else
3519 wait_event_interruptible(phba->ctrl.mcc_wait[tag],
3520 phba->ctrl.mcc_numtag[tag]);
3521
3522 wrb_num = (phba->ctrl.mcc_numtag[tag] & 0x00FF0000) >> 16;
3523 extd_status = (phba->ctrl.mcc_numtag[tag] & 0x0000FF00) >> 8;
3524 status = phba->ctrl.mcc_numtag[tag] & 0x000000FF;
3525 if (status || extd_status) {
3526 SE_DEBUG(DBG_LVL_1, "be_cmd_get_mac_addr Failed"
3527 " status = %d extd_status = %d\n",
3528 status, extd_status);
3529 free_mcc_tag(&phba->ctrl, tag);
3530 return -EBUSY;
3531 }
3532 wrb = queue_get_wrb(mccq, wrb_num);
3533 free_mcc_tag(&phba->ctrl, tag);
3534 boot_resp = embedded_payload(wrb);
3535
3536 if (boot_resp->boot_session_handle < 0) {
3537 printk(KERN_ERR "No Boot Session for this pci_func,"
3538 "session Hndl = %d\n", boot_resp->boot_session_handle);
3539 return -ENXIO;
3540 }
3541
3542 nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev,
3543 sizeof(*session_resp),
3544 &nonemb_cmd.dma);
3545 if (nonemb_cmd.va == NULL) {
3546 SE_DEBUG(DBG_LVL_1,
3547 "Failed to allocate memory for"
3548 "beiscsi_get_session_info\n");
3549 return -ENOMEM;
3550 }
3551
3552 memset(nonemb_cmd.va, 0, sizeof(*session_resp));
3553 tag = beiscsi_get_session_info(phba,
3554 boot_resp->boot_session_handle, &nonemb_cmd);
3555 if (!tag) {
3556 SE_DEBUG(DBG_LVL_1, "beiscsi_get_session_info"
3557 " Failed\n");
3558 goto boot_freemem;
3559 } else
3560 wait_event_interruptible(phba->ctrl.mcc_wait[tag],
3561 phba->ctrl.mcc_numtag[tag]);
3562
3563 wrb_num = (phba->ctrl.mcc_numtag[tag] & 0x00FF0000) >> 16;
3564 extd_status = (phba->ctrl.mcc_numtag[tag] & 0x0000FF00) >> 8;
3565 status = phba->ctrl.mcc_numtag[tag] & 0x000000FF;
3566 if (status || extd_status) {
3567 SE_DEBUG(DBG_LVL_1, "beiscsi_get_session_info Failed"
3568 " status = %d extd_status = %d\n",
3569 status, extd_status);
3570 free_mcc_tag(&phba->ctrl, tag);
3571 goto boot_freemem;
3572 }
3573 wrb = queue_get_wrb(mccq, wrb_num);
3574 free_mcc_tag(&phba->ctrl, tag);
3575 session_resp = nonemb_cmd.va ;
3576 memcpy(&phba->boot_sess, &session_resp->session_info,
3577 sizeof(struct mgmt_session_info));
3578 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
3579 nonemb_cmd.va, nonemb_cmd.dma);
3580 return 0;
3581 boot_freemem:
3582 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
3583 nonemb_cmd.va, nonemb_cmd.dma);
3584 return -ENOMEM;
3585 }
3586
3587 static int beiscsi_init_port(struct beiscsi_hba *phba)
3588 {
3589 int ret;
3590
3591 ret = beiscsi_init_controller(phba);
3592 if (ret < 0) {
3593 shost_printk(KERN_ERR, phba->shost,
3594 "beiscsi_dev_probe - Failed in"
3595 "beiscsi_init_controller\n");
3596 return ret;
3597 }
3598 ret = beiscsi_init_sgl_handle(phba);
3599 if (ret < 0) {
3600 shost_printk(KERN_ERR, phba->shost,
3601 "beiscsi_dev_probe - Failed in"
3602 "beiscsi_init_sgl_handle\n");
3603 goto do_cleanup_ctrlr;
3604 }
3605
3606 if (hba_setup_cid_tbls(phba)) {
3607 shost_printk(KERN_ERR, phba->shost,
3608 "Failed in hba_setup_cid_tbls\n");
3609 kfree(phba->io_sgl_hndl_base);
3610 kfree(phba->eh_sgl_hndl_base);
3611 goto do_cleanup_ctrlr;
3612 }
3613
3614 return ret;
3615
3616 do_cleanup_ctrlr:
3617 hwi_cleanup(phba);
3618 return ret;
3619 }
3620
3621 static void hwi_purge_eq(struct beiscsi_hba *phba)
3622 {
3623 struct hwi_controller *phwi_ctrlr;
3624 struct hwi_context_memory *phwi_context;
3625 struct be_queue_info *eq;
3626 struct be_eq_entry *eqe = NULL;
3627 int i, eq_msix;
3628 unsigned int num_processed;
3629
3630 phwi_ctrlr = phba->phwi_ctrlr;
3631 phwi_context = phwi_ctrlr->phwi_ctxt;
3632 if (phba->msix_enabled)
3633 eq_msix = 1;
3634 else
3635 eq_msix = 0;
3636
3637 for (i = 0; i < (phba->num_cpus + eq_msix); i++) {
3638 eq = &phwi_context->be_eq[i].q;
3639 eqe = queue_tail_node(eq);
3640 num_processed = 0;
3641 while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]
3642 & EQE_VALID_MASK) {
3643 AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
3644 queue_tail_inc(eq);
3645 eqe = queue_tail_node(eq);
3646 num_processed++;
3647 }
3648
3649 if (num_processed)
3650 hwi_ring_eq_db(phba, eq->id, 1, num_processed, 1, 1);
3651 }
3652 }
3653
3654 static void beiscsi_clean_port(struct beiscsi_hba *phba)
3655 {
3656 int mgmt_status;
3657
3658 mgmt_status = mgmt_epfw_cleanup(phba, CMD_CONNECTION_CHUTE_0);
3659 if (mgmt_status)
3660 shost_printk(KERN_WARNING, phba->shost,
3661 "mgmt_epfw_cleanup FAILED\n");
3662
3663 hwi_purge_eq(phba);
3664 hwi_cleanup(phba);
3665 kfree(phba->io_sgl_hndl_base);
3666 kfree(phba->eh_sgl_hndl_base);
3667 kfree(phba->cid_array);
3668 kfree(phba->ep_array);
3669 }
3670
3671 void
3672 beiscsi_offload_connection(struct beiscsi_conn *beiscsi_conn,
3673 struct beiscsi_offload_params *params)
3674 {
3675 struct wrb_handle *pwrb_handle;
3676 struct iscsi_target_context_update_wrb *pwrb = NULL;
3677 struct be_mem_descriptor *mem_descr;
3678 struct beiscsi_hba *phba = beiscsi_conn->phba;
3679 u32 doorbell = 0;
3680
3681 /*
3682 * We can always use 0 here because it is reserved by libiscsi for
3683 * login/startup related tasks.
3684 */
3685 pwrb_handle = alloc_wrb_handle(phba, (beiscsi_conn->beiscsi_conn_cid -
3686 phba->fw_config.iscsi_cid_start));
3687 pwrb = (struct iscsi_target_context_update_wrb *)pwrb_handle->pwrb;
3688 memset(pwrb, 0, sizeof(*pwrb));
3689 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb,
3690 max_burst_length, pwrb, params->dw[offsetof
3691 (struct amap_beiscsi_offload_params,
3692 max_burst_length) / 32]);
3693 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb,
3694 max_send_data_segment_length, pwrb,
3695 params->dw[offsetof(struct amap_beiscsi_offload_params,
3696 max_send_data_segment_length) / 32]);
3697 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb,
3698 first_burst_length,
3699 pwrb,
3700 params->dw[offsetof(struct amap_beiscsi_offload_params,
3701 first_burst_length) / 32]);
3702
3703 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, erl, pwrb,
3704 (params->dw[offsetof(struct amap_beiscsi_offload_params,
3705 erl) / 32] & OFFLD_PARAMS_ERL));
3706 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, dde, pwrb,
3707 (params->dw[offsetof(struct amap_beiscsi_offload_params,
3708 dde) / 32] & OFFLD_PARAMS_DDE) >> 2);
3709 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, hde, pwrb,
3710 (params->dw[offsetof(struct amap_beiscsi_offload_params,
3711 hde) / 32] & OFFLD_PARAMS_HDE) >> 3);
3712 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, ir2t, pwrb,
3713 (params->dw[offsetof(struct amap_beiscsi_offload_params,
3714 ir2t) / 32] & OFFLD_PARAMS_IR2T) >> 4);
3715 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, imd, pwrb,
3716 (params->dw[offsetof(struct amap_beiscsi_offload_params,
3717 imd) / 32] & OFFLD_PARAMS_IMD) >> 5);
3718 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, stat_sn,
3719 pwrb,
3720 (params->dw[offsetof(struct amap_beiscsi_offload_params,
3721 exp_statsn) / 32] + 1));
3722 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, type, pwrb,
3723 0x7);
3724 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, wrb_idx,
3725 pwrb, pwrb_handle->wrb_index);
3726 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, ptr2nextwrb,
3727 pwrb, pwrb_handle->nxt_wrb_index);
3728 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb,
3729 session_state, pwrb, 0);
3730 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, compltonack,
3731 pwrb, 1);
3732 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, notpredblq,
3733 pwrb, 0);
3734 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, mode, pwrb,
3735 0);
3736
3737 mem_descr = phba->init_mem;
3738 mem_descr += ISCSI_MEM_GLOBAL_HEADER;
3739
3740 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb,
3741 pad_buffer_addr_hi, pwrb,
3742 mem_descr->mem_array[0].bus_address.u.a32.address_hi);
3743 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb,
3744 pad_buffer_addr_lo, pwrb,
3745 mem_descr->mem_array[0].bus_address.u.a32.address_lo);
3746
3747 be_dws_le_to_cpu(pwrb, sizeof(struct iscsi_target_context_update_wrb));
3748
3749 doorbell |= beiscsi_conn->beiscsi_conn_cid & DB_WRB_POST_CID_MASK;
3750 doorbell |= (pwrb_handle->wrb_index & DB_DEF_PDU_WRB_INDEX_MASK)
3751 << DB_DEF_PDU_WRB_INDEX_SHIFT;
3752 doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
3753
3754 iowrite32(doorbell, phba->db_va + DB_TXULP0_OFFSET);
3755 }
3756
3757 static void beiscsi_parse_pdu(struct iscsi_conn *conn, itt_t itt,
3758 int *index, int *age)
3759 {
3760 *index = (int)itt;
3761 if (age)
3762 *age = conn->session->age;
3763 }
3764
3765 /**
3766 * beiscsi_alloc_pdu - allocates pdu and related resources
3767 * @task: libiscsi task
3768 * @opcode: opcode of pdu for task
3769 *
3770 * This is called with the session lock held. It will allocate
3771 * the wrb and sgl if needed for the command. And it will prep
3772 * the pdu's itt. beiscsi_parse_pdu will later translate
3773 * the pdu itt to the libiscsi task itt.
3774 */
3775 static int beiscsi_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
3776 {
3777 struct beiscsi_io_task *io_task = task->dd_data;
3778 struct iscsi_conn *conn = task->conn;
3779 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
3780 struct beiscsi_hba *phba = beiscsi_conn->phba;
3781 struct hwi_wrb_context *pwrb_context;
3782 struct hwi_controller *phwi_ctrlr;
3783 itt_t itt;
3784 struct beiscsi_session *beiscsi_sess = beiscsi_conn->beiscsi_sess;
3785 dma_addr_t paddr;
3786
3787 io_task->cmd_bhs = pci_pool_alloc(beiscsi_sess->bhs_pool,
3788 GFP_ATOMIC, &paddr);
3789 if (!io_task->cmd_bhs)
3790 return -ENOMEM;
3791 io_task->bhs_pa.u.a64.address = paddr;
3792 io_task->libiscsi_itt = (itt_t)task->itt;
3793 io_task->conn = beiscsi_conn;
3794
3795 task->hdr = (struct iscsi_hdr *)&io_task->cmd_bhs->iscsi_hdr;
3796 task->hdr_max = sizeof(struct be_cmd_bhs);
3797 io_task->psgl_handle = NULL;
3798 io_task->psgl_handle = NULL;
3799
3800 if (task->sc) {
3801 spin_lock(&phba->io_sgl_lock);
3802 io_task->psgl_handle = alloc_io_sgl_handle(phba);
3803 spin_unlock(&phba->io_sgl_lock);
3804 if (!io_task->psgl_handle)
3805 goto free_hndls;
3806 io_task->pwrb_handle = alloc_wrb_handle(phba,
3807 beiscsi_conn->beiscsi_conn_cid -
3808 phba->fw_config.iscsi_cid_start);
3809 if (!io_task->pwrb_handle)
3810 goto free_io_hndls;
3811 } else {
3812 io_task->scsi_cmnd = NULL;
3813 if ((opcode & ISCSI_OPCODE_MASK) == ISCSI_OP_LOGIN) {
3814 if (!beiscsi_conn->login_in_progress) {
3815 spin_lock(&phba->mgmt_sgl_lock);
3816 io_task->psgl_handle = (struct sgl_handle *)
3817 alloc_mgmt_sgl_handle(phba);
3818 spin_unlock(&phba->mgmt_sgl_lock);
3819 if (!io_task->psgl_handle)
3820 goto free_hndls;
3821
3822 beiscsi_conn->login_in_progress = 1;
3823 beiscsi_conn->plogin_sgl_handle =
3824 io_task->psgl_handle;
3825 io_task->pwrb_handle =
3826 alloc_wrb_handle(phba,
3827 beiscsi_conn->beiscsi_conn_cid -
3828 phba->fw_config.iscsi_cid_start);
3829 if (!io_task->pwrb_handle)
3830 goto free_io_hndls;
3831 beiscsi_conn->plogin_wrb_handle =
3832 io_task->pwrb_handle;
3833
3834 } else {
3835 io_task->psgl_handle =
3836 beiscsi_conn->plogin_sgl_handle;
3837 io_task->pwrb_handle =
3838 beiscsi_conn->plogin_wrb_handle;
3839 }
3840 } else {
3841 spin_lock(&phba->mgmt_sgl_lock);
3842 io_task->psgl_handle = alloc_mgmt_sgl_handle(phba);
3843 spin_unlock(&phba->mgmt_sgl_lock);
3844 if (!io_task->psgl_handle)
3845 goto free_hndls;
3846 io_task->pwrb_handle =
3847 alloc_wrb_handle(phba,
3848 beiscsi_conn->beiscsi_conn_cid -
3849 phba->fw_config.iscsi_cid_start);
3850 if (!io_task->pwrb_handle)
3851 goto free_mgmt_hndls;
3852
3853 }
3854 }
3855 itt = (itt_t) cpu_to_be32(((unsigned int)io_task->pwrb_handle->
3856 wrb_index << 16) | (unsigned int)
3857 (io_task->psgl_handle->sgl_index));
3858 io_task->pwrb_handle->pio_handle = task;
3859
3860 io_task->cmd_bhs->iscsi_hdr.itt = itt;
3861 return 0;
3862
3863 free_io_hndls:
3864 spin_lock(&phba->io_sgl_lock);
3865 free_io_sgl_handle(phba, io_task->psgl_handle);
3866 spin_unlock(&phba->io_sgl_lock);
3867 goto free_hndls;
3868 free_mgmt_hndls:
3869 spin_lock(&phba->mgmt_sgl_lock);
3870 free_mgmt_sgl_handle(phba, io_task->psgl_handle);
3871 spin_unlock(&phba->mgmt_sgl_lock);
3872 free_hndls:
3873 phwi_ctrlr = phba->phwi_ctrlr;
3874 pwrb_context = &phwi_ctrlr->wrb_context[
3875 beiscsi_conn->beiscsi_conn_cid -
3876 phba->fw_config.iscsi_cid_start];
3877 if (io_task->pwrb_handle)
3878 free_wrb_handle(phba, pwrb_context, io_task->pwrb_handle);
3879 io_task->pwrb_handle = NULL;
3880 pci_pool_free(beiscsi_sess->bhs_pool, io_task->cmd_bhs,
3881 io_task->bhs_pa.u.a64.address);
3882 SE_DEBUG(DBG_LVL_1, "Alloc of SGL_ICD Failed\n");
3883 return -ENOMEM;
3884 }
3885
3886 static void beiscsi_cleanup_task(struct iscsi_task *task)
3887 {
3888 struct beiscsi_io_task *io_task = task->dd_data;
3889 struct iscsi_conn *conn = task->conn;
3890 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
3891 struct beiscsi_hba *phba = beiscsi_conn->phba;
3892 struct beiscsi_session *beiscsi_sess = beiscsi_conn->beiscsi_sess;
3893 struct hwi_wrb_context *pwrb_context;
3894 struct hwi_controller *phwi_ctrlr;
3895
3896 phwi_ctrlr = phba->phwi_ctrlr;
3897 pwrb_context = &phwi_ctrlr->wrb_context[beiscsi_conn->beiscsi_conn_cid
3898 - phba->fw_config.iscsi_cid_start];
3899 if (io_task->pwrb_handle) {
3900 free_wrb_handle(phba, pwrb_context, io_task->pwrb_handle);
3901 io_task->pwrb_handle = NULL;
3902 }
3903
3904 if (io_task->cmd_bhs) {
3905 pci_pool_free(beiscsi_sess->bhs_pool, io_task->cmd_bhs,
3906 io_task->bhs_pa.u.a64.address);
3907 }
3908
3909 if (task->sc) {
3910 if (io_task->psgl_handle) {
3911 spin_lock(&phba->io_sgl_lock);
3912 free_io_sgl_handle(phba, io_task->psgl_handle);
3913 spin_unlock(&phba->io_sgl_lock);
3914 io_task->psgl_handle = NULL;
3915 }
3916 } else {
3917 if (task->hdr &&
3918 ((task->hdr->opcode & ISCSI_OPCODE_MASK) == ISCSI_OP_LOGIN))
3919 return;
3920 if (io_task->psgl_handle) {
3921 spin_lock(&phba->mgmt_sgl_lock);
3922 free_mgmt_sgl_handle(phba, io_task->psgl_handle);
3923 spin_unlock(&phba->mgmt_sgl_lock);
3924 io_task->psgl_handle = NULL;
3925 }
3926 }
3927 }
3928
3929 static int beiscsi_iotask(struct iscsi_task *task, struct scatterlist *sg,
3930 unsigned int num_sg, unsigned int xferlen,
3931 unsigned int writedir)
3932 {
3933
3934 struct beiscsi_io_task *io_task = task->dd_data;
3935 struct iscsi_conn *conn = task->conn;
3936 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
3937 struct beiscsi_hba *phba = beiscsi_conn->phba;
3938 struct iscsi_wrb *pwrb = NULL;
3939 unsigned int doorbell = 0;
3940
3941 pwrb = io_task->pwrb_handle->pwrb;
3942 io_task->cmd_bhs->iscsi_hdr.exp_statsn = 0;
3943 io_task->bhs_len = sizeof(struct be_cmd_bhs);
3944
3945 if (writedir) {
3946 memset(&io_task->cmd_bhs->iscsi_data_pdu, 0, 48);
3947 AMAP_SET_BITS(struct amap_pdu_data_out, itt,
3948 &io_task->cmd_bhs->iscsi_data_pdu,
3949 (unsigned int)io_task->cmd_bhs->iscsi_hdr.itt);
3950 AMAP_SET_BITS(struct amap_pdu_data_out, opcode,
3951 &io_task->cmd_bhs->iscsi_data_pdu,
3952 ISCSI_OPCODE_SCSI_DATA_OUT);
3953 AMAP_SET_BITS(struct amap_pdu_data_out, final_bit,
3954 &io_task->cmd_bhs->iscsi_data_pdu, 1);
3955 AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
3956 INI_WR_CMD);
3957 AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 1);
3958 } else {
3959 AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
3960 INI_RD_CMD);
3961 AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 0);
3962 }
3963 memcpy(&io_task->cmd_bhs->iscsi_data_pdu.
3964 dw[offsetof(struct amap_pdu_data_out, lun) / 32],
3965 io_task->cmd_bhs->iscsi_hdr.lun, sizeof(struct scsi_lun));
3966
3967 AMAP_SET_BITS(struct amap_iscsi_wrb, lun, pwrb,
3968 cpu_to_be16((unsigned short)io_task->cmd_bhs->iscsi_hdr.
3969 lun[0]));
3970 AMAP_SET_BITS(struct amap_iscsi_wrb, r2t_exp_dtl, pwrb, xferlen);
3971 AMAP_SET_BITS(struct amap_iscsi_wrb, wrb_idx, pwrb,
3972 io_task->pwrb_handle->wrb_index);
3973 AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb,
3974 be32_to_cpu(task->cmdsn));
3975 AMAP_SET_BITS(struct amap_iscsi_wrb, sgl_icd_idx, pwrb,
3976 io_task->psgl_handle->sgl_index);
3977
3978 hwi_write_sgl(pwrb, sg, num_sg, io_task);
3979
3980 AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb, pwrb,
3981 io_task->pwrb_handle->nxt_wrb_index);
3982 be_dws_le_to_cpu(pwrb, sizeof(struct iscsi_wrb));
3983
3984 doorbell |= beiscsi_conn->beiscsi_conn_cid & DB_WRB_POST_CID_MASK;
3985 doorbell |= (io_task->pwrb_handle->wrb_index &
3986 DB_DEF_PDU_WRB_INDEX_MASK) << DB_DEF_PDU_WRB_INDEX_SHIFT;
3987 doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
3988
3989 iowrite32(doorbell, phba->db_va + DB_TXULP0_OFFSET);
3990 return 0;
3991 }
3992
3993 static int beiscsi_mtask(struct iscsi_task *task)
3994 {
3995 struct beiscsi_io_task *io_task = task->dd_data;
3996 struct iscsi_conn *conn = task->conn;
3997 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
3998 struct beiscsi_hba *phba = beiscsi_conn->phba;
3999 struct iscsi_wrb *pwrb = NULL;
4000 unsigned int doorbell = 0;
4001 unsigned int cid;
4002
4003 cid = beiscsi_conn->beiscsi_conn_cid;
4004 pwrb = io_task->pwrb_handle->pwrb;
4005 memset(pwrb, 0, sizeof(*pwrb));
4006 AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb,
4007 be32_to_cpu(task->cmdsn));
4008 AMAP_SET_BITS(struct amap_iscsi_wrb, wrb_idx, pwrb,
4009 io_task->pwrb_handle->wrb_index);
4010 AMAP_SET_BITS(struct amap_iscsi_wrb, sgl_icd_idx, pwrb,
4011 io_task->psgl_handle->sgl_index);
4012
4013 switch (task->hdr->opcode & ISCSI_OPCODE_MASK) {
4014 case ISCSI_OP_LOGIN:
4015 AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
4016 TGT_DM_CMD);
4017 AMAP_SET_BITS(struct amap_iscsi_wrb, dmsg, pwrb, 0);
4018 AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb, 1);
4019 hwi_write_buffer(pwrb, task);
4020 break;
4021 case ISCSI_OP_NOOP_OUT:
4022 AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
4023 INI_RD_CMD);
4024 if (task->hdr->ttt == ISCSI_RESERVED_TAG)
4025 AMAP_SET_BITS(struct amap_iscsi_wrb, dmsg, pwrb, 0);
4026 else
4027 AMAP_SET_BITS(struct amap_iscsi_wrb, dmsg, pwrb, 1);
4028 hwi_write_buffer(pwrb, task);
4029 break;
4030 case ISCSI_OP_TEXT:
4031 AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
4032 TGT_DM_CMD);
4033 AMAP_SET_BITS(struct amap_iscsi_wrb, dmsg, pwrb, 0);
4034 hwi_write_buffer(pwrb, task);
4035 break;
4036 case ISCSI_OP_SCSI_TMFUNC:
4037 AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
4038 INI_TMF_CMD);
4039 AMAP_SET_BITS(struct amap_iscsi_wrb, dmsg, pwrb, 0);
4040 hwi_write_buffer(pwrb, task);
4041 break;
4042 case ISCSI_OP_LOGOUT:
4043 AMAP_SET_BITS(struct amap_iscsi_wrb, dmsg, pwrb, 0);
4044 AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
4045 HWH_TYPE_LOGOUT);
4046 hwi_write_buffer(pwrb, task);
4047 break;
4048
4049 default:
4050 SE_DEBUG(DBG_LVL_1, "opcode =%d Not supported\n",
4051 task->hdr->opcode & ISCSI_OPCODE_MASK);
4052 return -EINVAL;
4053 }
4054
4055 AMAP_SET_BITS(struct amap_iscsi_wrb, r2t_exp_dtl, pwrb,
4056 task->data_count);
4057 AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb, pwrb,
4058 io_task->pwrb_handle->nxt_wrb_index);
4059 be_dws_le_to_cpu(pwrb, sizeof(struct iscsi_wrb));
4060
4061 doorbell |= cid & DB_WRB_POST_CID_MASK;
4062 doorbell |= (io_task->pwrb_handle->wrb_index &
4063 DB_DEF_PDU_WRB_INDEX_MASK) << DB_DEF_PDU_WRB_INDEX_SHIFT;
4064 doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
4065 iowrite32(doorbell, phba->db_va + DB_TXULP0_OFFSET);
4066 return 0;
4067 }
4068
4069 static int beiscsi_task_xmit(struct iscsi_task *task)
4070 {
4071 struct beiscsi_io_task *io_task = task->dd_data;
4072 struct scsi_cmnd *sc = task->sc;
4073 struct scatterlist *sg;
4074 int num_sg;
4075 unsigned int writedir = 0, xferlen = 0;
4076
4077 if (!sc)
4078 return beiscsi_mtask(task);
4079
4080 io_task->scsi_cmnd = sc;
4081 num_sg = scsi_dma_map(sc);
4082 if (num_sg < 0) {
4083 SE_DEBUG(DBG_LVL_1, " scsi_dma_map Failed\n")
4084 return num_sg;
4085 }
4086 xferlen = scsi_bufflen(sc);
4087 sg = scsi_sglist(sc);
4088 if (sc->sc_data_direction == DMA_TO_DEVICE) {
4089 writedir = 1;
4090 SE_DEBUG(DBG_LVL_4, "task->imm_count=0x%08x\n",
4091 task->imm_count);
4092 } else
4093 writedir = 0;
4094 return beiscsi_iotask(task, sg, num_sg, xferlen, writedir);
4095 }
4096
4097 static void beiscsi_remove(struct pci_dev *pcidev)
4098 {
4099 struct beiscsi_hba *phba = NULL;
4100 struct hwi_controller *phwi_ctrlr;
4101 struct hwi_context_memory *phwi_context;
4102 struct be_eq_obj *pbe_eq;
4103 unsigned int i, msix_vec;
4104 u8 *real_offset = 0;
4105 u32 value = 0;
4106
4107 phba = (struct beiscsi_hba *)pci_get_drvdata(pcidev);
4108 if (!phba) {
4109 dev_err(&pcidev->dev, "beiscsi_remove called with no phba\n");
4110 return;
4111 }
4112
4113 phwi_ctrlr = phba->phwi_ctrlr;
4114 phwi_context = phwi_ctrlr->phwi_ctxt;
4115 hwi_disable_intr(phba);
4116 if (phba->msix_enabled) {
4117 for (i = 0; i <= phba->num_cpus; i++) {
4118 msix_vec = phba->msix_entries[i].vector;
4119 free_irq(msix_vec, &phwi_context->be_eq[i]);
4120 }
4121 } else
4122 if (phba->pcidev->irq)
4123 free_irq(phba->pcidev->irq, phba);
4124 pci_disable_msix(phba->pcidev);
4125 destroy_workqueue(phba->wq);
4126 if (blk_iopoll_enabled)
4127 for (i = 0; i < phba->num_cpus; i++) {
4128 pbe_eq = &phwi_context->be_eq[i];
4129 blk_iopoll_disable(&pbe_eq->iopoll);
4130 }
4131
4132 beiscsi_clean_port(phba);
4133 beiscsi_free_mem(phba);
4134 real_offset = (u8 *)phba->csr_va + MPU_EP_SEMAPHORE;
4135
4136 value = readl((void *)real_offset);
4137
4138 if (value & 0x00010000) {
4139 value &= 0xfffeffff;
4140 writel(value, (void *)real_offset);
4141 }
4142 beiscsi_unmap_pci_function(phba);
4143 pci_free_consistent(phba->pcidev,
4144 phba->ctrl.mbox_mem_alloced.size,
4145 phba->ctrl.mbox_mem_alloced.va,
4146 phba->ctrl.mbox_mem_alloced.dma);
4147 iscsi_host_remove(phba->shost);
4148 pci_dev_put(phba->pcidev);
4149 iscsi_host_free(phba->shost);
4150 iscsi_boot_destroy_kset(phba->boot_kset);
4151 }
4152
4153 static void beiscsi_msix_enable(struct beiscsi_hba *phba)
4154 {
4155 int i, status;
4156
4157 for (i = 0; i <= phba->num_cpus; i++)
4158 phba->msix_entries[i].entry = i;
4159
4160 status = pci_enable_msix(phba->pcidev, phba->msix_entries,
4161 (phba->num_cpus + 1));
4162 if (!status)
4163 phba->msix_enabled = true;
4164
4165 return;
4166 }
4167
4168 static int __devinit beiscsi_dev_probe(struct pci_dev *pcidev,
4169 const struct pci_device_id *id)
4170 {
4171 struct beiscsi_hba *phba = NULL;
4172 struct hwi_controller *phwi_ctrlr;
4173 struct hwi_context_memory *phwi_context;
4174 struct be_eq_obj *pbe_eq;
4175 int ret, num_cpus, i;
4176 u8 *real_offset = 0;
4177 u32 value = 0;
4178
4179 ret = beiscsi_enable_pci(pcidev);
4180 if (ret < 0) {
4181 dev_err(&pcidev->dev, "beiscsi_dev_probe-"
4182 " Failed to enable pci device\n");
4183 return ret;
4184 }
4185
4186 phba = beiscsi_hba_alloc(pcidev);
4187 if (!phba) {
4188 dev_err(&pcidev->dev, "beiscsi_dev_probe-"
4189 " Failed in beiscsi_hba_alloc\n");
4190 goto disable_pci;
4191 }
4192
4193 switch (pcidev->device) {
4194 case BE_DEVICE_ID1:
4195 case OC_DEVICE_ID1:
4196 case OC_DEVICE_ID2:
4197 phba->generation = BE_GEN2;
4198 break;
4199 case BE_DEVICE_ID2:
4200 case OC_DEVICE_ID3:
4201 phba->generation = BE_GEN3;
4202 break;
4203 default:
4204 phba->generation = 0;
4205 }
4206
4207 if (enable_msix)
4208 num_cpus = find_num_cpus();
4209 else
4210 num_cpus = 1;
4211 phba->num_cpus = num_cpus;
4212 SE_DEBUG(DBG_LVL_8, "num_cpus = %d\n", phba->num_cpus);
4213
4214 if (enable_msix)
4215 beiscsi_msix_enable(phba);
4216 ret = be_ctrl_init(phba, pcidev);
4217 if (ret) {
4218 shost_printk(KERN_ERR, phba->shost, "beiscsi_dev_probe-"
4219 "Failed in be_ctrl_init\n");
4220 goto hba_free;
4221 }
4222
4223 if (!num_hba) {
4224 real_offset = (u8 *)phba->csr_va + MPU_EP_SEMAPHORE;
4225 value = readl((void *)real_offset);
4226 if (value & 0x00010000) {
4227 gcrashmode++;
4228 shost_printk(KERN_ERR, phba->shost,
4229 "Loading Driver in crashdump mode\n");
4230 ret = beiscsi_pci_soft_reset(phba);
4231 if (ret) {
4232 shost_printk(KERN_ERR, phba->shost,
4233 "Reset Failed. Aborting Crashdump\n");
4234 goto hba_free;
4235 }
4236 ret = be_chk_reset_complete(phba);
4237 if (ret) {
4238 shost_printk(KERN_ERR, phba->shost,
4239 "Failed to get out of reset."
4240 "Aborting Crashdump\n");
4241 goto hba_free;
4242 }
4243 } else {
4244 value |= 0x00010000;
4245 writel(value, (void *)real_offset);
4246 num_hba++;
4247 }
4248 }
4249
4250 spin_lock_init(&phba->io_sgl_lock);
4251 spin_lock_init(&phba->mgmt_sgl_lock);
4252 spin_lock_init(&phba->isr_lock);
4253 ret = mgmt_get_fw_config(&phba->ctrl, phba);
4254 if (ret != 0) {
4255 shost_printk(KERN_ERR, phba->shost,
4256 "Error getting fw config\n");
4257 goto free_port;
4258 }
4259 phba->shost->max_id = phba->fw_config.iscsi_cid_count;
4260 beiscsi_get_params(phba);
4261 phba->shost->can_queue = phba->params.ios_per_ctrl;
4262 ret = beiscsi_init_port(phba);
4263 if (ret < 0) {
4264 shost_printk(KERN_ERR, phba->shost, "beiscsi_dev_probe-"
4265 "Failed in beiscsi_init_port\n");
4266 goto free_port;
4267 }
4268
4269 for (i = 0; i < MAX_MCC_CMD ; i++) {
4270 init_waitqueue_head(&phba->ctrl.mcc_wait[i + 1]);
4271 phba->ctrl.mcc_tag[i] = i + 1;
4272 phba->ctrl.mcc_numtag[i + 1] = 0;
4273 phba->ctrl.mcc_tag_available++;
4274 }
4275
4276 phba->ctrl.mcc_alloc_index = phba->ctrl.mcc_free_index = 0;
4277
4278 snprintf(phba->wq_name, sizeof(phba->wq_name), "beiscsi_q_irq%u",
4279 phba->shost->host_no);
4280 phba->wq = create_workqueue(phba->wq_name);
4281 if (!phba->wq) {
4282 shost_printk(KERN_ERR, phba->shost, "beiscsi_dev_probe-"
4283 "Failed to allocate work queue\n");
4284 goto free_twq;
4285 }
4286
4287 INIT_WORK(&phba->work_cqs, beiscsi_process_all_cqs);
4288
4289 phwi_ctrlr = phba->phwi_ctrlr;
4290 phwi_context = phwi_ctrlr->phwi_ctxt;
4291 if (blk_iopoll_enabled) {
4292 for (i = 0; i < phba->num_cpus; i++) {
4293 pbe_eq = &phwi_context->be_eq[i];
4294 blk_iopoll_init(&pbe_eq->iopoll, be_iopoll_budget,
4295 be_iopoll);
4296 blk_iopoll_enable(&pbe_eq->iopoll);
4297 }
4298 }
4299 ret = beiscsi_init_irqs(phba);
4300 if (ret < 0) {
4301 shost_printk(KERN_ERR, phba->shost, "beiscsi_dev_probe-"
4302 "Failed to beiscsi_init_irqs\n");
4303 goto free_blkenbld;
4304 }
4305 hwi_enable_intr(phba);
4306 ret = beiscsi_get_boot_info(phba);
4307 if (ret < 0) {
4308 shost_printk(KERN_ERR, phba->shost, "beiscsi_dev_probe-"
4309 "No Boot Devices !!!!!\n");
4310 }
4311 SE_DEBUG(DBG_LVL_8, "\n\n\n SUCCESS - DRIVER LOADED\n\n\n");
4312 return 0;
4313
4314 free_blkenbld:
4315 destroy_workqueue(phba->wq);
4316 if (blk_iopoll_enabled)
4317 for (i = 0; i < phba->num_cpus; i++) {
4318 pbe_eq = &phwi_context->be_eq[i];
4319 blk_iopoll_disable(&pbe_eq->iopoll);
4320 }
4321 free_twq:
4322 beiscsi_clean_port(phba);
4323 beiscsi_free_mem(phba);
4324 free_port:
4325 real_offset = (u8 *)phba->csr_va + MPU_EP_SEMAPHORE;
4326
4327 value = readl((void *)real_offset);
4328
4329 if (value & 0x00010000) {
4330 value &= 0xfffeffff;
4331 writel(value, (void *)real_offset);
4332 }
4333
4334 pci_free_consistent(phba->pcidev,
4335 phba->ctrl.mbox_mem_alloced.size,
4336 phba->ctrl.mbox_mem_alloced.va,
4337 phba->ctrl.mbox_mem_alloced.dma);
4338 beiscsi_unmap_pci_function(phba);
4339 hba_free:
4340 if (phba->msix_enabled)
4341 pci_disable_msix(phba->pcidev);
4342 iscsi_host_remove(phba->shost);
4343 pci_dev_put(phba->pcidev);
4344 iscsi_host_free(phba->shost);
4345 disable_pci:
4346 pci_disable_device(pcidev);
4347 return ret;
4348 }
4349
4350 struct iscsi_transport beiscsi_iscsi_transport = {
4351 .owner = THIS_MODULE,
4352 .name = DRV_NAME,
4353 .caps = CAP_RECOVERY_L0 | CAP_HDRDGST | CAP_TEXT_NEGO |
4354 CAP_MULTI_R2T | CAP_DATADGST | CAP_DATA_PATH_OFFLOAD,
4355 .param_mask = ISCSI_MAX_RECV_DLENGTH |
4356 ISCSI_MAX_XMIT_DLENGTH |
4357 ISCSI_HDRDGST_EN |
4358 ISCSI_DATADGST_EN |
4359 ISCSI_INITIAL_R2T_EN |
4360 ISCSI_MAX_R2T |
4361 ISCSI_IMM_DATA_EN |
4362 ISCSI_FIRST_BURST |
4363 ISCSI_MAX_BURST |
4364 ISCSI_PDU_INORDER_EN |
4365 ISCSI_DATASEQ_INORDER_EN |
4366 ISCSI_ERL |
4367 ISCSI_CONN_PORT |
4368 ISCSI_CONN_ADDRESS |
4369 ISCSI_EXP_STATSN |
4370 ISCSI_PERSISTENT_PORT |
4371 ISCSI_PERSISTENT_ADDRESS |
4372 ISCSI_TARGET_NAME | ISCSI_TPGT |
4373 ISCSI_USERNAME | ISCSI_PASSWORD |
4374 ISCSI_USERNAME_IN | ISCSI_PASSWORD_IN |
4375 ISCSI_FAST_ABORT | ISCSI_ABORT_TMO |
4376 ISCSI_LU_RESET_TMO |
4377 ISCSI_PING_TMO | ISCSI_RECV_TMO |
4378 ISCSI_IFACE_NAME | ISCSI_INITIATOR_NAME,
4379 .host_param_mask = ISCSI_HOST_HWADDRESS | ISCSI_HOST_IPADDRESS |
4380 ISCSI_HOST_INITIATOR_NAME,
4381 .create_session = beiscsi_session_create,
4382 .destroy_session = beiscsi_session_destroy,
4383 .create_conn = beiscsi_conn_create,
4384 .bind_conn = beiscsi_conn_bind,
4385 .destroy_conn = iscsi_conn_teardown,
4386 .set_param = beiscsi_set_param,
4387 .get_conn_param = beiscsi_conn_get_param,
4388 .get_session_param = iscsi_session_get_param,
4389 .get_host_param = beiscsi_get_host_param,
4390 .start_conn = beiscsi_conn_start,
4391 .stop_conn = iscsi_conn_stop,
4392 .send_pdu = iscsi_conn_send_pdu,
4393 .xmit_task = beiscsi_task_xmit,
4394 .cleanup_task = beiscsi_cleanup_task,
4395 .alloc_pdu = beiscsi_alloc_pdu,
4396 .parse_pdu_itt = beiscsi_parse_pdu,
4397 .get_stats = beiscsi_conn_get_stats,
4398 .ep_connect = beiscsi_ep_connect,
4399 .ep_poll = beiscsi_ep_poll,
4400 .ep_disconnect = beiscsi_ep_disconnect,
4401 .session_recovery_timedout = iscsi_session_recovery_timedout,
4402 };
4403
4404 static struct pci_driver beiscsi_pci_driver = {
4405 .name = DRV_NAME,
4406 .probe = beiscsi_dev_probe,
4407 .remove = beiscsi_remove,
4408 .id_table = beiscsi_pci_id_table
4409 };
4410
4411
4412 static int __init beiscsi_module_init(void)
4413 {
4414 int ret;
4415
4416 beiscsi_scsi_transport =
4417 iscsi_register_transport(&beiscsi_iscsi_transport);
4418 if (!beiscsi_scsi_transport) {
4419 SE_DEBUG(DBG_LVL_1,
4420 "beiscsi_module_init - Unable to register beiscsi"
4421 "transport.\n");
4422 return -ENOMEM;
4423 }
4424 SE_DEBUG(DBG_LVL_8, "In beiscsi_module_init, tt=%p\n",
4425 &beiscsi_iscsi_transport);
4426
4427 ret = pci_register_driver(&beiscsi_pci_driver);
4428 if (ret) {
4429 SE_DEBUG(DBG_LVL_1,
4430 "beiscsi_module_init - Unable to register"
4431 "beiscsi pci driver.\n");
4432 goto unregister_iscsi_transport;
4433 }
4434 return 0;
4435
4436 unregister_iscsi_transport:
4437 iscsi_unregister_transport(&beiscsi_iscsi_transport);
4438 return ret;
4439 }
4440
4441 static void __exit beiscsi_module_exit(void)
4442 {
4443 pci_unregister_driver(&beiscsi_pci_driver);
4444 iscsi_unregister_transport(&beiscsi_iscsi_transport);
4445 }
4446
4447 module_init(beiscsi_module_init);
4448 module_exit(beiscsi_module_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree