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Add linux-next specific files for 20110831
[linux-2.6/next.git] / drivers / scsi / be2iscsi / be_main.c
blob57fea3848b694ba683beb9e66d35cdc33ec02558
1 /**
2 * Copyright (C) 2005 - 2011 Emulex
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 (jayamohan.kallickal@emulex.com)
11 *
12 * Contact Information:
13 * linux-drivers@emulex.com
14 *
15 * Emulex
16 * 3333 Susan Street
17 * Costa Mesa, CA 92626
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 struct mgmt_session_info *boot_sess = &phba->boot_sess;
219 struct mgmt_conn_info *boot_conn = &boot_sess->conn_list[0];
220 char *str = buf;
221 int rc;
222
223 switch (type) {
224 case ISCSI_BOOT_TGT_NAME:
225 rc = sprintf(buf, "%.*s\n",
226 (int)strlen(boot_sess->target_name),
227 (char *)&boot_sess->target_name);
228 break;
229 case ISCSI_BOOT_TGT_IP_ADDR:
230 if (boot_conn->dest_ipaddr.ip_type == 0x1)
231 rc = sprintf(buf, "%pI4\n",
232 (char *)&boot_conn->dest_ipaddr.ip_address);
233 else
234 rc = sprintf(str, "%pI6\n",
235 (char *)&boot_conn->dest_ipaddr.ip_address);
236 break;
237 case ISCSI_BOOT_TGT_PORT:
238 rc = sprintf(str, "%d\n", boot_conn->dest_port);
239 break;
240
241 case ISCSI_BOOT_TGT_CHAP_NAME:
242 rc = sprintf(str, "%.*s\n",
243 boot_conn->negotiated_login_options.auth_data.chap.
244 target_chap_name_length,
245 (char *)&boot_conn->negotiated_login_options.
246 auth_data.chap.target_chap_name);
247 break;
248 case ISCSI_BOOT_TGT_CHAP_SECRET:
249 rc = sprintf(str, "%.*s\n",
250 boot_conn->negotiated_login_options.auth_data.chap.
251 target_secret_length,
252 (char *)&boot_conn->negotiated_login_options.
253 auth_data.chap.target_secret);
254 break;
255 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
256 rc = sprintf(str, "%.*s\n",
257 boot_conn->negotiated_login_options.auth_data.chap.
258 intr_chap_name_length,
259 (char *)&boot_conn->negotiated_login_options.
260 auth_data.chap.intr_chap_name);
261 break;
262 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
263 rc = sprintf(str, "%.*s\n",
264 boot_conn->negotiated_login_options.auth_data.chap.
265 intr_secret_length,
266 (char *)&boot_conn->negotiated_login_options.
267 auth_data.chap.intr_secret);
268 break;
269 case ISCSI_BOOT_TGT_FLAGS:
270 rc = sprintf(str, "2\n");
271 break;
272 case ISCSI_BOOT_TGT_NIC_ASSOC:
273 rc = sprintf(str, "0\n");
274 break;
275 default:
276 rc = -ENOSYS;
277 break;
278 }
279 return rc;
280 }
281
282 static ssize_t beiscsi_show_boot_ini_info(void *data, int type, char *buf)
283 {
284 struct beiscsi_hba *phba = data;
285 char *str = buf;
286 int rc;
287
288 switch (type) {
289 case ISCSI_BOOT_INI_INITIATOR_NAME:
290 rc = sprintf(str, "%s\n", phba->boot_sess.initiator_iscsiname);
291 break;
292 default:
293 rc = -ENOSYS;
294 break;
295 }
296 return rc;
297 }
298
299 static ssize_t beiscsi_show_boot_eth_info(void *data, int type, char *buf)
300 {
301 struct beiscsi_hba *phba = data;
302 char *str = buf;
303 int rc;
304
305 switch (type) {
306 case ISCSI_BOOT_ETH_FLAGS:
307 rc = sprintf(str, "2\n");
308 break;
309 case ISCSI_BOOT_ETH_INDEX:
310 rc = sprintf(str, "0\n");
311 break;
312 case ISCSI_BOOT_ETH_MAC:
313 rc = beiscsi_get_macaddr(buf, phba);
314 if (rc < 0) {
315 SE_DEBUG(DBG_LVL_1, "beiscsi_get_macaddr Failed\n");
316 return rc;
317 }
318 break;
319 default:
320 rc = -ENOSYS;
321 break;
322 }
323 return rc;
324 }
325
326
327 static mode_t beiscsi_tgt_get_attr_visibility(void *data, int type)
328 {
329 int rc;
330
331 switch (type) {
332 case ISCSI_BOOT_TGT_NAME:
333 case ISCSI_BOOT_TGT_IP_ADDR:
334 case ISCSI_BOOT_TGT_PORT:
335 case ISCSI_BOOT_TGT_CHAP_NAME:
336 case ISCSI_BOOT_TGT_CHAP_SECRET:
337 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
338 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
339 case ISCSI_BOOT_TGT_NIC_ASSOC:
340 case ISCSI_BOOT_TGT_FLAGS:
341 rc = S_IRUGO;
342 break;
343 default:
344 rc = 0;
345 break;
346 }
347 return rc;
348 }
349
350 static mode_t beiscsi_ini_get_attr_visibility(void *data, int type)
351 {
352 int rc;
353
354 switch (type) {
355 case ISCSI_BOOT_INI_INITIATOR_NAME:
356 rc = S_IRUGO;
357 break;
358 default:
359 rc = 0;
360 break;
361 }
362 return rc;
363 }
364
365
366 static mode_t beiscsi_eth_get_attr_visibility(void *data, int type)
367 {
368 int rc;
369
370 switch (type) {
371 case ISCSI_BOOT_ETH_FLAGS:
372 case ISCSI_BOOT_ETH_MAC:
373 case ISCSI_BOOT_ETH_INDEX:
374 rc = S_IRUGO;
375 break;
376 default:
377 rc = 0;
378 break;
379 }
380 return rc;
381 }
382
383 /*------------------- PCI Driver operations and data ----------------- */
384 static DEFINE_PCI_DEVICE_TABLE(beiscsi_pci_id_table) = {
385 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
386 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID2) },
387 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
388 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
389 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID3) },
390 { 0 }
391 };
392 MODULE_DEVICE_TABLE(pci, beiscsi_pci_id_table);
393
394 static struct scsi_host_template beiscsi_sht = {
395 .module = THIS_MODULE,
396 .name = "ServerEngines 10Gbe open-iscsi Initiator Driver",
397 .proc_name = DRV_NAME,
398 .queuecommand = iscsi_queuecommand,
399 .change_queue_depth = iscsi_change_queue_depth,
400 .slave_configure = beiscsi_slave_configure,
401 .target_alloc = iscsi_target_alloc,
402 .eh_abort_handler = beiscsi_eh_abort,
403 .eh_device_reset_handler = beiscsi_eh_device_reset,
404 .eh_target_reset_handler = iscsi_eh_session_reset,
405 .sg_tablesize = BEISCSI_SGLIST_ELEMENTS,
406 .can_queue = BE2_IO_DEPTH,
407 .this_id = -1,
408 .max_sectors = BEISCSI_MAX_SECTORS,
409 .cmd_per_lun = BEISCSI_CMD_PER_LUN,
410 .use_clustering = ENABLE_CLUSTERING,
411 };
412
413 static struct scsi_transport_template *beiscsi_scsi_transport;
414
415 static struct beiscsi_hba *beiscsi_hba_alloc(struct pci_dev *pcidev)
416 {
417 struct beiscsi_hba *phba;
418 struct Scsi_Host *shost;
419
420 shost = iscsi_host_alloc(&beiscsi_sht, sizeof(*phba), 0);
421 if (!shost) {
422 dev_err(&pcidev->dev, "beiscsi_hba_alloc -"
423 "iscsi_host_alloc failed\n");
424 return NULL;
425 }
426 shost->dma_boundary = pcidev->dma_mask;
427 shost->max_id = BE2_MAX_SESSIONS;
428 shost->max_channel = 0;
429 shost->max_cmd_len = BEISCSI_MAX_CMD_LEN;
430 shost->max_lun = BEISCSI_NUM_MAX_LUN;
431 shost->transportt = beiscsi_scsi_transport;
432 phba = iscsi_host_priv(shost);
433 memset(phba, 0, sizeof(*phba));
434 phba->shost = shost;
435 phba->pcidev = pci_dev_get(pcidev);
436 pci_set_drvdata(pcidev, phba);
437
438 if (iscsi_host_add(shost, &phba->pcidev->dev))
439 goto free_devices;
440
441 return phba;
442
443 free_devices:
444 pci_dev_put(phba->pcidev);
445 iscsi_host_free(phba->shost);
446 return NULL;
447 }
448
449 static void beiscsi_unmap_pci_function(struct beiscsi_hba *phba)
450 {
451 if (phba->csr_va) {
452 iounmap(phba->csr_va);
453 phba->csr_va = NULL;
454 }
455 if (phba->db_va) {
456 iounmap(phba->db_va);
457 phba->db_va = NULL;
458 }
459 if (phba->pci_va) {
460 iounmap(phba->pci_va);
461 phba->pci_va = NULL;
462 }
463 }
464
465 static int beiscsi_map_pci_bars(struct beiscsi_hba *phba,
466 struct pci_dev *pcidev)
467 {
468 u8 __iomem *addr;
469 int pcicfg_reg;
470
471 addr = ioremap_nocache(pci_resource_start(pcidev, 2),
472 pci_resource_len(pcidev, 2));
473 if (addr == NULL)
474 return -ENOMEM;
475 phba->ctrl.csr = addr;
476 phba->csr_va = addr;
477 phba->csr_pa.u.a64.address = pci_resource_start(pcidev, 2);
478
479 addr = ioremap_nocache(pci_resource_start(pcidev, 4), 128 * 1024);
480 if (addr == NULL)
481 goto pci_map_err;
482 phba->ctrl.db = addr;
483 phba->db_va = addr;
484 phba->db_pa.u.a64.address = pci_resource_start(pcidev, 4);
485
486 if (phba->generation == BE_GEN2)
487 pcicfg_reg = 1;
488 else
489 pcicfg_reg = 0;
490
491 addr = ioremap_nocache(pci_resource_start(pcidev, pcicfg_reg),
492 pci_resource_len(pcidev, pcicfg_reg));
493
494 if (addr == NULL)
495 goto pci_map_err;
496 phba->ctrl.pcicfg = addr;
497 phba->pci_va = addr;
498 phba->pci_pa.u.a64.address = pci_resource_start(pcidev, pcicfg_reg);
499 return 0;
500
501 pci_map_err:
502 beiscsi_unmap_pci_function(phba);
503 return -ENOMEM;
504 }
505
506 static int beiscsi_enable_pci(struct pci_dev *pcidev)
507 {
508 int ret;
509
510 ret = pci_enable_device(pcidev);
511 if (ret) {
512 dev_err(&pcidev->dev, "beiscsi_enable_pci - enable device "
513 "failed. Returning -ENODEV\n");
514 return ret;
515 }
516
517 pci_set_master(pcidev);
518 if (pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(64))) {
519 ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(32));
520 if (ret) {
521 dev_err(&pcidev->dev, "Could not set PCI DMA Mask\n");
522 pci_disable_device(pcidev);
523 return ret;
524 }
525 }
526 return 0;
527 }
528
529 static int be_ctrl_init(struct beiscsi_hba *phba, struct pci_dev *pdev)
530 {
531 struct be_ctrl_info *ctrl = &phba->ctrl;
532 struct be_dma_mem *mbox_mem_alloc = &ctrl->mbox_mem_alloced;
533 struct be_dma_mem *mbox_mem_align = &ctrl->mbox_mem;
534 int status = 0;
535
536 ctrl->pdev = pdev;
537 status = beiscsi_map_pci_bars(phba, pdev);
538 if (status)
539 return status;
540 mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
541 mbox_mem_alloc->va = pci_alloc_consistent(pdev,
542 mbox_mem_alloc->size,
543 &mbox_mem_alloc->dma);
544 if (!mbox_mem_alloc->va) {
545 beiscsi_unmap_pci_function(phba);
546 status = -ENOMEM;
547 return status;
548 }
549
550 mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
551 mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
552 mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
553 memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
554 spin_lock_init(&ctrl->mbox_lock);
555 spin_lock_init(&phba->ctrl.mcc_lock);
556 spin_lock_init(&phba->ctrl.mcc_cq_lock);
557
558 return status;
559 }
560
561 static void beiscsi_get_params(struct beiscsi_hba *phba)
562 {
563 phba->params.ios_per_ctrl = (phba->fw_config.iscsi_icd_count
564 - (phba->fw_config.iscsi_cid_count
565 + BE2_TMFS
566 + BE2_NOPOUT_REQ));
567 phba->params.cxns_per_ctrl = phba->fw_config.iscsi_cid_count;
568 phba->params.asyncpdus_per_ctrl = phba->fw_config.iscsi_cid_count * 2;
569 phba->params.icds_per_ctrl = phba->fw_config.iscsi_icd_count;
570 phba->params.num_sge_per_io = BE2_SGE;
571 phba->params.defpdu_hdr_sz = BE2_DEFPDU_HDR_SZ;
572 phba->params.defpdu_data_sz = BE2_DEFPDU_DATA_SZ;
573 phba->params.eq_timer = 64;
574 phba->params.num_eq_entries =
575 (((BE2_CMDS_PER_CXN * 2 + phba->fw_config.iscsi_cid_count * 2
576 + BE2_TMFS) / 512) + 1) * 512;
577 phba->params.num_eq_entries = (phba->params.num_eq_entries < 1024)
578 ? 1024 : phba->params.num_eq_entries;
579 SE_DEBUG(DBG_LVL_8, "phba->params.num_eq_entries=%d\n",
580 phba->params.num_eq_entries);
581 phba->params.num_cq_entries =
582 (((BE2_CMDS_PER_CXN * 2 + phba->fw_config.iscsi_cid_count * 2
583 + BE2_TMFS) / 512) + 1) * 512;
584 phba->params.wrbs_per_cxn = 256;
585 }
586
587 static void hwi_ring_eq_db(struct beiscsi_hba *phba,
588 unsigned int id, unsigned int clr_interrupt,
589 unsigned int num_processed,
590 unsigned char rearm, unsigned char event)
591 {
592 u32 val = 0;
593 val |= id & DB_EQ_RING_ID_MASK;
594 if (rearm)
595 val |= 1 << DB_EQ_REARM_SHIFT;
596 if (clr_interrupt)
597 val |= 1 << DB_EQ_CLR_SHIFT;
598 if (event)
599 val |= 1 << DB_EQ_EVNT_SHIFT;
600 val |= num_processed << DB_EQ_NUM_POPPED_SHIFT;
601 iowrite32(val, phba->db_va + DB_EQ_OFFSET);
602 }
603
604 /**
605 * be_isr_mcc - The isr routine of the driver.
606 * @irq: Not used
607 * @dev_id: Pointer to host adapter structure
608 */
609 static irqreturn_t be_isr_mcc(int irq, void *dev_id)
610 {
611 struct beiscsi_hba *phba;
612 struct be_eq_entry *eqe = NULL;
613 struct be_queue_info *eq;
614 struct be_queue_info *mcc;
615 unsigned int num_eq_processed;
616 struct be_eq_obj *pbe_eq;
617 unsigned long flags;
618
619 pbe_eq = dev_id;
620 eq = &pbe_eq->q;
621 phba = pbe_eq->phba;
622 mcc = &phba->ctrl.mcc_obj.cq;
623 eqe = queue_tail_node(eq);
624 if (!eqe)
625 SE_DEBUG(DBG_LVL_1, "eqe is NULL\n");
626
627 num_eq_processed = 0;
628
629 while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]
630 & EQE_VALID_MASK) {
631 if (((eqe->dw[offsetof(struct amap_eq_entry,
632 resource_id) / 32] &
633 EQE_RESID_MASK) >> 16) == mcc->id) {
634 spin_lock_irqsave(&phba->isr_lock, flags);
635 phba->todo_mcc_cq = 1;
636 spin_unlock_irqrestore(&phba->isr_lock, flags);
637 }
638 AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
639 queue_tail_inc(eq);
640 eqe = queue_tail_node(eq);
641 num_eq_processed++;
642 }
643 if (phba->todo_mcc_cq)
644 queue_work(phba->wq, &phba->work_cqs);
645 if (num_eq_processed)
646 hwi_ring_eq_db(phba, eq->id, 1, num_eq_processed, 1, 1);
647
648 return IRQ_HANDLED;
649 }
650
651 /**
652 * be_isr_msix - The isr routine of the driver.
653 * @irq: Not used
654 * @dev_id: Pointer to host adapter structure
655 */
656 static irqreturn_t be_isr_msix(int irq, void *dev_id)
657 {
658 struct beiscsi_hba *phba;
659 struct be_eq_entry *eqe = NULL;
660 struct be_queue_info *eq;
661 struct be_queue_info *cq;
662 unsigned int num_eq_processed;
663 struct be_eq_obj *pbe_eq;
664 unsigned long flags;
665
666 pbe_eq = dev_id;
667 eq = &pbe_eq->q;
668 cq = pbe_eq->cq;
669 eqe = queue_tail_node(eq);
670 if (!eqe)
671 SE_DEBUG(DBG_LVL_1, "eqe is NULL\n");
672
673 phba = pbe_eq->phba;
674 num_eq_processed = 0;
675 if (blk_iopoll_enabled) {
676 while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]
677 & EQE_VALID_MASK) {
678 if (!blk_iopoll_sched_prep(&pbe_eq->iopoll))
679 blk_iopoll_sched(&pbe_eq->iopoll);
680
681 AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
682 queue_tail_inc(eq);
683 eqe = queue_tail_node(eq);
684 num_eq_processed++;
685 }
686 if (num_eq_processed)
687 hwi_ring_eq_db(phba, eq->id, 1, num_eq_processed, 0, 1);
688
689 return IRQ_HANDLED;
690 } else {
691 while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]
692 & EQE_VALID_MASK) {
693 spin_lock_irqsave(&phba->isr_lock, flags);
694 phba->todo_cq = 1;
695 spin_unlock_irqrestore(&phba->isr_lock, flags);
696 AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
697 queue_tail_inc(eq);
698 eqe = queue_tail_node(eq);
699 num_eq_processed++;
700 }
701 if (phba->todo_cq)
702 queue_work(phba->wq, &phba->work_cqs);
703
704 if (num_eq_processed)
705 hwi_ring_eq_db(phba, eq->id, 1, num_eq_processed, 1, 1);
706
707 return IRQ_HANDLED;
708 }
709 }
710
711 /**
712 * be_isr - The isr routine of the driver.
713 * @irq: Not used
714 * @dev_id: Pointer to host adapter structure
715 */
716 static irqreturn_t be_isr(int irq, void *dev_id)
717 {
718 struct beiscsi_hba *phba;
719 struct hwi_controller *phwi_ctrlr;
720 struct hwi_context_memory *phwi_context;
721 struct be_eq_entry *eqe = NULL;
722 struct be_queue_info *eq;
723 struct be_queue_info *cq;
724 struct be_queue_info *mcc;
725 unsigned long flags, index;
726 unsigned int num_mcceq_processed, num_ioeq_processed;
727 struct be_ctrl_info *ctrl;
728 struct be_eq_obj *pbe_eq;
729 int isr;
730
731 phba = dev_id;
732 ctrl = &phba->ctrl;
733 isr = ioread32(ctrl->csr + CEV_ISR0_OFFSET +
734 (PCI_FUNC(ctrl->pdev->devfn) * CEV_ISR_SIZE));
735 if (!isr)
736 return IRQ_NONE;
737
738 phwi_ctrlr = phba->phwi_ctrlr;
739 phwi_context = phwi_ctrlr->phwi_ctxt;
740 pbe_eq = &phwi_context->be_eq[0];
741
742 eq = &phwi_context->be_eq[0].q;
743 mcc = &phba->ctrl.mcc_obj.cq;
744 index = 0;
745 eqe = queue_tail_node(eq);
746 if (!eqe)
747 SE_DEBUG(DBG_LVL_1, "eqe is NULL\n");
748
749 num_ioeq_processed = 0;
750 num_mcceq_processed = 0;
751 if (blk_iopoll_enabled) {
752 while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]
753 & EQE_VALID_MASK) {
754 if (((eqe->dw[offsetof(struct amap_eq_entry,
755 resource_id) / 32] &
756 EQE_RESID_MASK) >> 16) == mcc->id) {
757 spin_lock_irqsave(&phba->isr_lock, flags);
758 phba->todo_mcc_cq = 1;
759 spin_unlock_irqrestore(&phba->isr_lock, flags);
760 num_mcceq_processed++;
761 } else {
762 if (!blk_iopoll_sched_prep(&pbe_eq->iopoll))
763 blk_iopoll_sched(&pbe_eq->iopoll);
764 num_ioeq_processed++;
765 }
766 AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
767 queue_tail_inc(eq);
768 eqe = queue_tail_node(eq);
769 }
770 if (num_ioeq_processed || num_mcceq_processed) {
771 if (phba->todo_mcc_cq)
772 queue_work(phba->wq, &phba->work_cqs);
773
774 if ((num_mcceq_processed) && (!num_ioeq_processed))
775 hwi_ring_eq_db(phba, eq->id, 0,
776 (num_ioeq_processed +
777 num_mcceq_processed) , 1, 1);
778 else
779 hwi_ring_eq_db(phba, eq->id, 0,
780 (num_ioeq_processed +
781 num_mcceq_processed), 0, 1);
782
783 return IRQ_HANDLED;
784 } else
785 return IRQ_NONE;
786 } else {
787 cq = &phwi_context->be_cq[0];
788 while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]
789 & EQE_VALID_MASK) {
790
791 if (((eqe->dw[offsetof(struct amap_eq_entry,
792 resource_id) / 32] &
793 EQE_RESID_MASK) >> 16) != cq->id) {
794 spin_lock_irqsave(&phba->isr_lock, flags);
795 phba->todo_mcc_cq = 1;
796 spin_unlock_irqrestore(&phba->isr_lock, flags);
797 } else {
798 spin_lock_irqsave(&phba->isr_lock, flags);
799 phba->todo_cq = 1;
800 spin_unlock_irqrestore(&phba->isr_lock, flags);
801 }
802 AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
803 queue_tail_inc(eq);
804 eqe = queue_tail_node(eq);
805 num_ioeq_processed++;
806 }
807 if (phba->todo_cq || phba->todo_mcc_cq)
808 queue_work(phba->wq, &phba->work_cqs);
809
810 if (num_ioeq_processed) {
811 hwi_ring_eq_db(phba, eq->id, 0,
812 num_ioeq_processed, 1, 1);
813 return IRQ_HANDLED;
814 } else
815 return IRQ_NONE;
816 }
817 }
818
819 static int beiscsi_init_irqs(struct beiscsi_hba *phba)
820 {
821 struct pci_dev *pcidev = phba->pcidev;
822 struct hwi_controller *phwi_ctrlr;
823 struct hwi_context_memory *phwi_context;
824 int ret, msix_vec, i, j;
825
826 phwi_ctrlr = phba->phwi_ctrlr;
827 phwi_context = phwi_ctrlr->phwi_ctxt;
828
829 if (phba->msix_enabled) {
830 for (i = 0; i < phba->num_cpus; i++) {
831 phba->msi_name[i] = kzalloc(BEISCSI_MSI_NAME,
832 GFP_KERNEL);
833 if (!phba->msi_name[i]) {
834 ret = -ENOMEM;
835 goto free_msix_irqs;
836 }
837
838 sprintf(phba->msi_name[i], "beiscsi_%02x_%02x",
839 phba->shost->host_no, i);
840 msix_vec = phba->msix_entries[i].vector;
841 ret = request_irq(msix_vec, be_isr_msix, 0,
842 phba->msi_name[i],
843 &phwi_context->be_eq[i]);
844 if (ret) {
845 shost_printk(KERN_ERR, phba->shost,
846 "beiscsi_init_irqs-Failed to"
847 "register msix for i = %d\n", i);
848 kfree(phba->msi_name[i]);
849 goto free_msix_irqs;
850 }
851 }
852 phba->msi_name[i] = kzalloc(BEISCSI_MSI_NAME, GFP_KERNEL);
853 if (!phba->msi_name[i]) {
854 ret = -ENOMEM;
855 goto free_msix_irqs;
856 }
857 sprintf(phba->msi_name[i], "beiscsi_mcc_%02x",
858 phba->shost->host_no);
859 msix_vec = phba->msix_entries[i].vector;
860 ret = request_irq(msix_vec, be_isr_mcc, 0, phba->msi_name[i],
861 &phwi_context->be_eq[i]);
862 if (ret) {
863 shost_printk(KERN_ERR, phba->shost, "beiscsi_init_irqs-"
864 "Failed to register beiscsi_msix_mcc\n");
865 kfree(phba->msi_name[i]);
866 goto free_msix_irqs;
867 }
868
869 } else {
870 ret = request_irq(pcidev->irq, be_isr, IRQF_SHARED,
871 "beiscsi", phba);
872 if (ret) {
873 shost_printk(KERN_ERR, phba->shost, "beiscsi_init_irqs-"
874 "Failed to register irq\\n");
875 return ret;
876 }
877 }
878 return 0;
879 free_msix_irqs:
880 for (j = i - 1; j >= 0; j--) {
881 kfree(phba->msi_name[j]);
882 msix_vec = phba->msix_entries[j].vector;
883 free_irq(msix_vec, &phwi_context->be_eq[j]);
884 }
885 return ret;
886 }
887
888 static void hwi_ring_cq_db(struct beiscsi_hba *phba,
889 unsigned int id, unsigned int num_processed,
890 unsigned char rearm, unsigned char event)
891 {
892 u32 val = 0;
893 val |= id & DB_CQ_RING_ID_MASK;
894 if (rearm)
895 val |= 1 << DB_CQ_REARM_SHIFT;
896 val |= num_processed << DB_CQ_NUM_POPPED_SHIFT;
897 iowrite32(val, phba->db_va + DB_CQ_OFFSET);
898 }
899
900 static unsigned int
901 beiscsi_process_async_pdu(struct beiscsi_conn *beiscsi_conn,
902 struct beiscsi_hba *phba,
903 unsigned short cid,
904 struct pdu_base *ppdu,
905 unsigned long pdu_len,
906 void *pbuffer, unsigned long buf_len)
907 {
908 struct iscsi_conn *conn = beiscsi_conn->conn;
909 struct iscsi_session *session = conn->session;
910 struct iscsi_task *task;
911 struct beiscsi_io_task *io_task;
912 struct iscsi_hdr *login_hdr;
913
914 switch (ppdu->dw[offsetof(struct amap_pdu_base, opcode) / 32] &
915 PDUBASE_OPCODE_MASK) {
916 case ISCSI_OP_NOOP_IN:
917 pbuffer = NULL;
918 buf_len = 0;
919 break;
920 case ISCSI_OP_ASYNC_EVENT:
921 break;
922 case ISCSI_OP_REJECT:
923 WARN_ON(!pbuffer);
924 WARN_ON(!(buf_len == 48));
925 SE_DEBUG(DBG_LVL_1, "In ISCSI_OP_REJECT\n");
926 break;
927 case ISCSI_OP_LOGIN_RSP:
928 case ISCSI_OP_TEXT_RSP:
929 task = conn->login_task;
930 io_task = task->dd_data;
931 login_hdr = (struct iscsi_hdr *)ppdu;
932 login_hdr->itt = io_task->libiscsi_itt;
933 break;
934 default:
935 shost_printk(KERN_WARNING, phba->shost,
936 "Unrecognized opcode 0x%x in async msg\n",
937 (ppdu->
938 dw[offsetof(struct amap_pdu_base, opcode) / 32]
939 & PDUBASE_OPCODE_MASK));
940 return 1;
941 }
942
943 spin_lock_bh(&session->lock);
944 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)ppdu, pbuffer, buf_len);
945 spin_unlock_bh(&session->lock);
946 return 0;
947 }
948
949 static struct sgl_handle *alloc_io_sgl_handle(struct beiscsi_hba *phba)
950 {
951 struct sgl_handle *psgl_handle;
952
953 if (phba->io_sgl_hndl_avbl) {
954 SE_DEBUG(DBG_LVL_8,
955 "In alloc_io_sgl_handle,io_sgl_alloc_index=%d\n",
956 phba->io_sgl_alloc_index);
957 psgl_handle = phba->io_sgl_hndl_base[phba->
958 io_sgl_alloc_index];
959 phba->io_sgl_hndl_base[phba->io_sgl_alloc_index] = NULL;
960 phba->io_sgl_hndl_avbl--;
961 if (phba->io_sgl_alloc_index == (phba->params.
962 ios_per_ctrl - 1))
963 phba->io_sgl_alloc_index = 0;
964 else
965 phba->io_sgl_alloc_index++;
966 } else
967 psgl_handle = NULL;
968 return psgl_handle;
969 }
970
971 static void
972 free_io_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle)
973 {
974 SE_DEBUG(DBG_LVL_8, "In free_,io_sgl_free_index=%d\n",
975 phba->io_sgl_free_index);
976 if (phba->io_sgl_hndl_base[phba->io_sgl_free_index]) {
977 /*
978 * this can happen if clean_task is called on a task that
979 * failed in xmit_task or alloc_pdu.
980 */
981 SE_DEBUG(DBG_LVL_8,
982 "Double Free in IO SGL io_sgl_free_index=%d,"
983 "value there=%p\n", phba->io_sgl_free_index,
984 phba->io_sgl_hndl_base[phba->io_sgl_free_index]);
985 return;
986 }
987 phba->io_sgl_hndl_base[phba->io_sgl_free_index] = psgl_handle;
988 phba->io_sgl_hndl_avbl++;
989 if (phba->io_sgl_free_index == (phba->params.ios_per_ctrl - 1))
990 phba->io_sgl_free_index = 0;
991 else
992 phba->io_sgl_free_index++;
993 }
994
995 /**
996 * alloc_wrb_handle - To allocate a wrb handle
997 * @phba: The hba pointer
998 * @cid: The cid to use for allocation
999 *
1000 * This happens under session_lock until submission to chip
1001 */
1002 struct wrb_handle *alloc_wrb_handle(struct beiscsi_hba *phba, unsigned int cid)
1003 {
1004 struct hwi_wrb_context *pwrb_context;
1005 struct hwi_controller *phwi_ctrlr;
1006 struct wrb_handle *pwrb_handle, *pwrb_handle_tmp;
1007
1008 phwi_ctrlr = phba->phwi_ctrlr;
1009 pwrb_context = &phwi_ctrlr->wrb_context[cid];
1010 if (pwrb_context->wrb_handles_available >= 2) {
1011 pwrb_handle = pwrb_context->pwrb_handle_base[
1012 pwrb_context->alloc_index];
1013 pwrb_context->wrb_handles_available--;
1014 if (pwrb_context->alloc_index ==
1015 (phba->params.wrbs_per_cxn - 1))
1016 pwrb_context->alloc_index = 0;
1017 else
1018 pwrb_context->alloc_index++;
1019 pwrb_handle_tmp = pwrb_context->pwrb_handle_base[
1020 pwrb_context->alloc_index];
1021 pwrb_handle->nxt_wrb_index = pwrb_handle_tmp->wrb_index;
1022 } else
1023 pwrb_handle = NULL;
1024 return pwrb_handle;
1025 }
1026
1027 /**
1028 * free_wrb_handle - To free the wrb handle back to pool
1029 * @phba: The hba pointer
1030 * @pwrb_context: The context to free from
1031 * @pwrb_handle: The wrb_handle to free
1032 *
1033 * This happens under session_lock until submission to chip
1034 */
1035 static void
1036 free_wrb_handle(struct beiscsi_hba *phba, struct hwi_wrb_context *pwrb_context,
1037 struct wrb_handle *pwrb_handle)
1038 {
1039 pwrb_context->pwrb_handle_base[pwrb_context->free_index] = pwrb_handle;
1040 pwrb_context->wrb_handles_available++;
1041 if (pwrb_context->free_index == (phba->params.wrbs_per_cxn - 1))
1042 pwrb_context->free_index = 0;
1043 else
1044 pwrb_context->free_index++;
1045
1046 SE_DEBUG(DBG_LVL_8,
1047 "FREE WRB: pwrb_handle=%p free_index=0x%x"
1048 "wrb_handles_available=%d\n",
1049 pwrb_handle, pwrb_context->free_index,
1050 pwrb_context->wrb_handles_available);
1051 }
1052
1053 static struct sgl_handle *alloc_mgmt_sgl_handle(struct beiscsi_hba *phba)
1054 {
1055 struct sgl_handle *psgl_handle;
1056
1057 if (phba->eh_sgl_hndl_avbl) {
1058 psgl_handle = phba->eh_sgl_hndl_base[phba->eh_sgl_alloc_index];
1059 phba->eh_sgl_hndl_base[phba->eh_sgl_alloc_index] = NULL;
1060 SE_DEBUG(DBG_LVL_8, "mgmt_sgl_alloc_index=%d=0x%x\n",
1061 phba->eh_sgl_alloc_index, phba->eh_sgl_alloc_index);
1062 phba->eh_sgl_hndl_avbl--;
1063 if (phba->eh_sgl_alloc_index ==
1064 (phba->params.icds_per_ctrl - phba->params.ios_per_ctrl -
1065 1))
1066 phba->eh_sgl_alloc_index = 0;
1067 else
1068 phba->eh_sgl_alloc_index++;
1069 } else
1070 psgl_handle = NULL;
1071 return psgl_handle;
1072 }
1073
1074 void
1075 free_mgmt_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle)
1076 {
1077
1078 SE_DEBUG(DBG_LVL_8, "In free_mgmt_sgl_handle,eh_sgl_free_index=%d\n",
1079 phba->eh_sgl_free_index);
1080 if (phba->eh_sgl_hndl_base[phba->eh_sgl_free_index]) {
1081 /*
1082 * this can happen if clean_task is called on a task that
1083 * failed in xmit_task or alloc_pdu.
1084 */
1085 SE_DEBUG(DBG_LVL_8,
1086 "Double Free in eh SGL ,eh_sgl_free_index=%d\n",
1087 phba->eh_sgl_free_index);
1088 return;
1089 }
1090 phba->eh_sgl_hndl_base[phba->eh_sgl_free_index] = psgl_handle;
1091 phba->eh_sgl_hndl_avbl++;
1092 if (phba->eh_sgl_free_index ==
1093 (phba->params.icds_per_ctrl - phba->params.ios_per_ctrl - 1))
1094 phba->eh_sgl_free_index = 0;
1095 else
1096 phba->eh_sgl_free_index++;
1097 }
1098
1099 static void
1100 be_complete_io(struct beiscsi_conn *beiscsi_conn,
1101 struct iscsi_task *task, struct sol_cqe *psol)
1102 {
1103 struct beiscsi_io_task *io_task = task->dd_data;
1104 struct be_status_bhs *sts_bhs =
1105 (struct be_status_bhs *)io_task->cmd_bhs;
1106 struct iscsi_conn *conn = beiscsi_conn->conn;
1107 unsigned int sense_len;
1108 unsigned char *sense;
1109 u32 resid = 0, exp_cmdsn, max_cmdsn;
1110 u8 rsp, status, flags;
1111
1112 exp_cmdsn = (psol->
1113 dw[offsetof(struct amap_sol_cqe, i_exp_cmd_sn) / 32]
1114 & SOL_EXP_CMD_SN_MASK);
1115 max_cmdsn = ((psol->
1116 dw[offsetof(struct amap_sol_cqe, i_exp_cmd_sn) / 32]
1117 & SOL_EXP_CMD_SN_MASK) +
1118 ((psol->dw[offsetof(struct amap_sol_cqe, i_cmd_wnd)
1119 / 32] & SOL_CMD_WND_MASK) >> 24) - 1);
1120 rsp = ((psol->dw[offsetof(struct amap_sol_cqe, i_resp) / 32]
1121 & SOL_RESP_MASK) >> 16);
1122 status = ((psol->dw[offsetof(struct amap_sol_cqe, i_sts) / 32]
1123 & SOL_STS_MASK) >> 8);
1124 flags = ((psol->dw[offsetof(struct amap_sol_cqe, i_flags) / 32]
1125 & SOL_FLAGS_MASK) >> 24) | 0x80;
1126
1127 task->sc->result = (DID_OK << 16) | status;
1128 if (rsp != ISCSI_STATUS_CMD_COMPLETED) {
1129 task->sc->result = DID_ERROR << 16;
1130 goto unmap;
1131 }
1132
1133 /* bidi not initially supported */
1134 if (flags & (ISCSI_FLAG_CMD_UNDERFLOW | ISCSI_FLAG_CMD_OVERFLOW)) {
1135 resid = (psol->dw[offsetof(struct amap_sol_cqe, i_res_cnt) /
1136 32] & SOL_RES_CNT_MASK);
1137
1138 if (!status && (flags & ISCSI_FLAG_CMD_OVERFLOW))
1139 task->sc->result = DID_ERROR << 16;
1140
1141 if (flags & ISCSI_FLAG_CMD_UNDERFLOW) {
1142 scsi_set_resid(task->sc, resid);
1143 if (!status && (scsi_bufflen(task->sc) - resid <
1144 task->sc->underflow))
1145 task->sc->result = DID_ERROR << 16;
1146 }
1147 }
1148
1149 if (status == SAM_STAT_CHECK_CONDITION) {
1150 unsigned short *slen = (unsigned short *)sts_bhs->sense_info;
1151 sense = sts_bhs->sense_info + sizeof(unsigned short);
1152 sense_len = cpu_to_be16(*slen);
1153 memcpy(task->sc->sense_buffer, sense,
1154 min_t(u16, sense_len, SCSI_SENSE_BUFFERSIZE));
1155 }
1156
1157 if (io_task->cmd_bhs->iscsi_hdr.flags & ISCSI_FLAG_CMD_READ) {
1158 if (psol->dw[offsetof(struct amap_sol_cqe, i_res_cnt) / 32]
1159 & SOL_RES_CNT_MASK)
1160 conn->rxdata_octets += (psol->
1161 dw[offsetof(struct amap_sol_cqe, i_res_cnt) / 32]
1162 & SOL_RES_CNT_MASK);
1163 }
1164 unmap:
1165 scsi_dma_unmap(io_task->scsi_cmnd);
1166 iscsi_complete_scsi_task(task, exp_cmdsn, max_cmdsn);
1167 }
1168
1169 static void
1170 be_complete_logout(struct beiscsi_conn *beiscsi_conn,
1171 struct iscsi_task *task, struct sol_cqe *psol)
1172 {
1173 struct iscsi_logout_rsp *hdr;
1174 struct beiscsi_io_task *io_task = task->dd_data;
1175 struct iscsi_conn *conn = beiscsi_conn->conn;
1176
1177 hdr = (struct iscsi_logout_rsp *)task->hdr;
1178 hdr->opcode = ISCSI_OP_LOGOUT_RSP;
1179 hdr->t2wait = 5;
1180 hdr->t2retain = 0;
1181 hdr->flags = ((psol->dw[offsetof(struct amap_sol_cqe, i_flags) / 32]
1182 & SOL_FLAGS_MASK) >> 24) | 0x80;
1183 hdr->response = (psol->dw[offsetof(struct amap_sol_cqe, i_resp) /
1184 32] & SOL_RESP_MASK);
1185 hdr->exp_cmdsn = cpu_to_be32(psol->
1186 dw[offsetof(struct amap_sol_cqe, i_exp_cmd_sn) / 32]
1187 & SOL_EXP_CMD_SN_MASK);
1188 hdr->max_cmdsn = be32_to_cpu((psol->
1189 dw[offsetof(struct amap_sol_cqe, i_exp_cmd_sn) / 32]
1190 & SOL_EXP_CMD_SN_MASK) +
1191 ((psol->dw[offsetof(struct amap_sol_cqe, i_cmd_wnd)
1192 / 32] & SOL_CMD_WND_MASK) >> 24) - 1);
1193 hdr->dlength[0] = 0;
1194 hdr->dlength[1] = 0;
1195 hdr->dlength[2] = 0;
1196 hdr->hlength = 0;
1197 hdr->itt = io_task->libiscsi_itt;
1198 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0);
1199 }
1200
1201 static void
1202 be_complete_tmf(struct beiscsi_conn *beiscsi_conn,
1203 struct iscsi_task *task, struct sol_cqe *psol)
1204 {
1205 struct iscsi_tm_rsp *hdr;
1206 struct iscsi_conn *conn = beiscsi_conn->conn;
1207 struct beiscsi_io_task *io_task = task->dd_data;
1208
1209 hdr = (struct iscsi_tm_rsp *)task->hdr;
1210 hdr->opcode = ISCSI_OP_SCSI_TMFUNC_RSP;
1211 hdr->flags = ((psol->dw[offsetof(struct amap_sol_cqe, i_flags) / 32]
1212 & SOL_FLAGS_MASK) >> 24) | 0x80;
1213 hdr->response = (psol->dw[offsetof(struct amap_sol_cqe, i_resp) /
1214 32] & SOL_RESP_MASK);
1215 hdr->exp_cmdsn = cpu_to_be32(psol->dw[offsetof(struct amap_sol_cqe,
1216 i_exp_cmd_sn) / 32] & SOL_EXP_CMD_SN_MASK);
1217 hdr->max_cmdsn = be32_to_cpu((psol->dw[offsetof(struct amap_sol_cqe,
1218 i_exp_cmd_sn) / 32] & SOL_EXP_CMD_SN_MASK) +
1219 ((psol->dw[offsetof(struct amap_sol_cqe, i_cmd_wnd)
1220 / 32] & SOL_CMD_WND_MASK) >> 24) - 1);
1221 hdr->itt = io_task->libiscsi_itt;
1222 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0);
1223 }
1224
1225 static void
1226 hwi_complete_drvr_msgs(struct beiscsi_conn *beiscsi_conn,
1227 struct beiscsi_hba *phba, struct sol_cqe *psol)
1228 {
1229 struct hwi_wrb_context *pwrb_context;
1230 struct wrb_handle *pwrb_handle = NULL;
1231 struct hwi_controller *phwi_ctrlr;
1232 struct iscsi_task *task;
1233 struct beiscsi_io_task *io_task;
1234 struct iscsi_conn *conn = beiscsi_conn->conn;
1235 struct iscsi_session *session = conn->session;
1236
1237 phwi_ctrlr = phba->phwi_ctrlr;
1238 pwrb_context = &phwi_ctrlr->wrb_context[((psol->
1239 dw[offsetof(struct amap_sol_cqe, cid) / 32] &
1240 SOL_CID_MASK) >> 6) -
1241 phba->fw_config.iscsi_cid_start];
1242 pwrb_handle = pwrb_context->pwrb_handle_basestd[((psol->
1243 dw[offsetof(struct amap_sol_cqe, wrb_index) /
1244 32] & SOL_WRB_INDEX_MASK) >> 16)];
1245 task = pwrb_handle->pio_handle;
1246
1247 io_task = task->dd_data;
1248 spin_lock(&phba->mgmt_sgl_lock);
1249 free_mgmt_sgl_handle(phba, io_task->psgl_handle);
1250 spin_unlock(&phba->mgmt_sgl_lock);
1251 spin_lock_bh(&session->lock);
1252 free_wrb_handle(phba, pwrb_context, pwrb_handle);
1253 spin_unlock_bh(&session->lock);
1254 }
1255
1256 static void
1257 be_complete_nopin_resp(struct beiscsi_conn *beiscsi_conn,
1258 struct iscsi_task *task, struct sol_cqe *psol)
1259 {
1260 struct iscsi_nopin *hdr;
1261 struct iscsi_conn *conn = beiscsi_conn->conn;
1262 struct beiscsi_io_task *io_task = task->dd_data;
1263
1264 hdr = (struct iscsi_nopin *)task->hdr;
1265 hdr->flags = ((psol->dw[offsetof(struct amap_sol_cqe, i_flags) / 32]
1266 & SOL_FLAGS_MASK) >> 24) | 0x80;
1267 hdr->exp_cmdsn = cpu_to_be32(psol->dw[offsetof(struct amap_sol_cqe,
1268 i_exp_cmd_sn) / 32] & SOL_EXP_CMD_SN_MASK);
1269 hdr->max_cmdsn = be32_to_cpu((psol->dw[offsetof(struct amap_sol_cqe,
1270 i_exp_cmd_sn) / 32] & SOL_EXP_CMD_SN_MASK) +
1271 ((psol->dw[offsetof(struct amap_sol_cqe, i_cmd_wnd)
1272 / 32] & SOL_CMD_WND_MASK) >> 24) - 1);
1273 hdr->opcode = ISCSI_OP_NOOP_IN;
1274 hdr->itt = io_task->libiscsi_itt;
1275 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0);
1276 }
1277
1278 static void hwi_complete_cmd(struct beiscsi_conn *beiscsi_conn,
1279 struct beiscsi_hba *phba, struct sol_cqe *psol)
1280 {
1281 struct hwi_wrb_context *pwrb_context;
1282 struct wrb_handle *pwrb_handle;
1283 struct iscsi_wrb *pwrb = NULL;
1284 struct hwi_controller *phwi_ctrlr;
1285 struct iscsi_task *task;
1286 unsigned int type;
1287 struct iscsi_conn *conn = beiscsi_conn->conn;
1288 struct iscsi_session *session = conn->session;
1289
1290 phwi_ctrlr = phba->phwi_ctrlr;
1291 pwrb_context = &phwi_ctrlr->wrb_context[((psol->dw[offsetof
1292 (struct amap_sol_cqe, cid) / 32]
1293 & SOL_CID_MASK) >> 6) -
1294 phba->fw_config.iscsi_cid_start];
1295 pwrb_handle = pwrb_context->pwrb_handle_basestd[((psol->
1296 dw[offsetof(struct amap_sol_cqe, wrb_index) /
1297 32] & SOL_WRB_INDEX_MASK) >> 16)];
1298 task = pwrb_handle->pio_handle;
1299 pwrb = pwrb_handle->pwrb;
1300 type = (pwrb->dw[offsetof(struct amap_iscsi_wrb, type) / 32] &
1301 WRB_TYPE_MASK) >> 28;
1302
1303 spin_lock_bh(&session->lock);
1304 switch (type) {
1305 case HWH_TYPE_IO:
1306 case HWH_TYPE_IO_RD:
1307 if ((task->hdr->opcode & ISCSI_OPCODE_MASK) ==
1308 ISCSI_OP_NOOP_OUT)
1309 be_complete_nopin_resp(beiscsi_conn, task, psol);
1310 else
1311 be_complete_io(beiscsi_conn, task, psol);
1312 break;
1313
1314 case HWH_TYPE_LOGOUT:
1315 if ((task->hdr->opcode & ISCSI_OPCODE_MASK) == ISCSI_OP_LOGOUT)
1316 be_complete_logout(beiscsi_conn, task, psol);
1317 else
1318 be_complete_tmf(beiscsi_conn, task, psol);
1319
1320 break;
1321
1322 case HWH_TYPE_LOGIN:
1323 SE_DEBUG(DBG_LVL_1,
1324 "\t\t No HWH_TYPE_LOGIN Expected in hwi_complete_cmd"
1325 "- Solicited path\n");
1326 break;
1327
1328 case HWH_TYPE_NOP:
1329 be_complete_nopin_resp(beiscsi_conn, task, psol);
1330 break;
1331
1332 default:
1333 shost_printk(KERN_WARNING, phba->shost,
1334 "In hwi_complete_cmd, unknown type = %d"
1335 "wrb_index 0x%x CID 0x%x\n", type,
1336 ((psol->dw[offsetof(struct amap_iscsi_wrb,
1337 type) / 32] & SOL_WRB_INDEX_MASK) >> 16),
1338 ((psol->dw[offsetof(struct amap_sol_cqe,
1339 cid) / 32] & SOL_CID_MASK) >> 6));
1340 break;
1341 }
1342
1343 spin_unlock_bh(&session->lock);
1344 }
1345
1346 static struct list_head *hwi_get_async_busy_list(struct hwi_async_pdu_context
1347 *pasync_ctx, unsigned int is_header,
1348 unsigned int host_write_ptr)
1349 {
1350 if (is_header)
1351 return &pasync_ctx->async_entry[host_write_ptr].
1352 header_busy_list;
1353 else
1354 return &pasync_ctx->async_entry[host_write_ptr].data_busy_list;
1355 }
1356
1357 static struct async_pdu_handle *
1358 hwi_get_async_handle(struct beiscsi_hba *phba,
1359 struct beiscsi_conn *beiscsi_conn,
1360 struct hwi_async_pdu_context *pasync_ctx,
1361 struct i_t_dpdu_cqe *pdpdu_cqe, unsigned int *pcq_index)
1362 {
1363 struct be_bus_address phys_addr;
1364 struct list_head *pbusy_list;
1365 struct async_pdu_handle *pasync_handle = NULL;
1366 int buffer_len = 0;
1367 unsigned char buffer_index = -1;
1368 unsigned char is_header = 0;
1369
1370 phys_addr.u.a32.address_lo =
1371 pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe, db_addr_lo) / 32] -
1372 ((pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe, dpl) / 32]
1373 & PDUCQE_DPL_MASK) >> 16);
1374 phys_addr.u.a32.address_hi =
1375 pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe, db_addr_hi) / 32];
1376
1377 phys_addr.u.a64.address =
1378 *((unsigned long long *)(&phys_addr.u.a64.address));
1379
1380 switch (pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe, code) / 32]
1381 & PDUCQE_CODE_MASK) {
1382 case UNSOL_HDR_NOTIFY:
1383 is_header = 1;
1384
1385 pbusy_list = hwi_get_async_busy_list(pasync_ctx, 1,
1386 (pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe,
1387 index) / 32] & PDUCQE_INDEX_MASK));
1388
1389 buffer_len = (unsigned int)(phys_addr.u.a64.address -
1390 pasync_ctx->async_header.pa_base.u.a64.address);
1391
1392 buffer_index = buffer_len /
1393 pasync_ctx->async_header.buffer_size;
1394
1395 break;
1396 case UNSOL_DATA_NOTIFY:
1397 pbusy_list = hwi_get_async_busy_list(pasync_ctx, 0, (pdpdu_cqe->
1398 dw[offsetof(struct amap_i_t_dpdu_cqe,
1399 index) / 32] & PDUCQE_INDEX_MASK));
1400 buffer_len = (unsigned long)(phys_addr.u.a64.address -
1401 pasync_ctx->async_data.pa_base.u.
1402 a64.address);
1403 buffer_index = buffer_len / pasync_ctx->async_data.buffer_size;
1404 break;
1405 default:
1406 pbusy_list = NULL;
1407 shost_printk(KERN_WARNING, phba->shost,
1408 "Unexpected code=%d\n",
1409 pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe,
1410 code) / 32] & PDUCQE_CODE_MASK);
1411 return NULL;
1412 }
1413
1414 WARN_ON(!(buffer_index <= pasync_ctx->async_data.num_entries));
1415 WARN_ON(list_empty(pbusy_list));
1416 list_for_each_entry(pasync_handle, pbusy_list, link) {
1417 WARN_ON(pasync_handle->consumed);
1418 if (pasync_handle->index == buffer_index)
1419 break;
1420 }
1421
1422 WARN_ON(!pasync_handle);
1423
1424 pasync_handle->cri = (unsigned short)beiscsi_conn->beiscsi_conn_cid -
1425 phba->fw_config.iscsi_cid_start;
1426 pasync_handle->is_header = is_header;
1427 pasync_handle->buffer_len = ((pdpdu_cqe->
1428 dw[offsetof(struct amap_i_t_dpdu_cqe, dpl) / 32]
1429 & PDUCQE_DPL_MASK) >> 16);
1430
1431 *pcq_index = (pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe,
1432 index) / 32] & PDUCQE_INDEX_MASK);
1433 return pasync_handle;
1434 }
1435
1436 static unsigned int
1437 hwi_update_async_writables(struct hwi_async_pdu_context *pasync_ctx,
1438 unsigned int is_header, unsigned int cq_index)
1439 {
1440 struct list_head *pbusy_list;
1441 struct async_pdu_handle *pasync_handle;
1442 unsigned int num_entries, writables = 0;
1443 unsigned int *pep_read_ptr, *pwritables;
1444
1445
1446 if (is_header) {
1447 pep_read_ptr = &pasync_ctx->async_header.ep_read_ptr;
1448 pwritables = &pasync_ctx->async_header.writables;
1449 num_entries = pasync_ctx->async_header.num_entries;
1450 } else {
1451 pep_read_ptr = &pasync_ctx->async_data.ep_read_ptr;
1452 pwritables = &pasync_ctx->async_data.writables;
1453 num_entries = pasync_ctx->async_data.num_entries;
1454 }
1455
1456 while ((*pep_read_ptr) != cq_index) {
1457 (*pep_read_ptr)++;
1458 *pep_read_ptr = (*pep_read_ptr) % num_entries;
1459
1460 pbusy_list = hwi_get_async_busy_list(pasync_ctx, is_header,
1461 *pep_read_ptr);
1462 if (writables == 0)
1463 WARN_ON(list_empty(pbusy_list));
1464
1465 if (!list_empty(pbusy_list)) {
1466 pasync_handle = list_entry(pbusy_list->next,
1467 struct async_pdu_handle,
1468 link);
1469 WARN_ON(!pasync_handle);
1470 pasync_handle->consumed = 1;
1471 }
1472
1473 writables++;
1474 }
1475
1476 if (!writables) {
1477 SE_DEBUG(DBG_LVL_1,
1478 "Duplicate notification received - index 0x%x!!\n",
1479 cq_index);
1480 WARN_ON(1);
1481 }
1482
1483 *pwritables = *pwritables + writables;
1484 return 0;
1485 }
1486
1487 static unsigned int hwi_free_async_msg(struct beiscsi_hba *phba,
1488 unsigned int cri)
1489 {
1490 struct hwi_controller *phwi_ctrlr;
1491 struct hwi_async_pdu_context *pasync_ctx;
1492 struct async_pdu_handle *pasync_handle, *tmp_handle;
1493 struct list_head *plist;
1494 unsigned int i = 0;
1495
1496 phwi_ctrlr = phba->phwi_ctrlr;
1497 pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr);
1498
1499 plist = &pasync_ctx->async_entry[cri].wait_queue.list;
1500
1501 list_for_each_entry_safe(pasync_handle, tmp_handle, plist, link) {
1502 list_del(&pasync_handle->link);
1503
1504 if (i == 0) {
1505 list_add_tail(&pasync_handle->link,
1506 &pasync_ctx->async_header.free_list);
1507 pasync_ctx->async_header.free_entries++;
1508 i++;
1509 } else {
1510 list_add_tail(&pasync_handle->link,
1511 &pasync_ctx->async_data.free_list);
1512 pasync_ctx->async_data.free_entries++;
1513 i++;
1514 }
1515 }
1516
1517 INIT_LIST_HEAD(&pasync_ctx->async_entry[cri].wait_queue.list);
1518 pasync_ctx->async_entry[cri].wait_queue.hdr_received = 0;
1519 pasync_ctx->async_entry[cri].wait_queue.bytes_received = 0;
1520 return 0;
1521 }
1522
1523 static struct phys_addr *
1524 hwi_get_ring_address(struct hwi_async_pdu_context *pasync_ctx,
1525 unsigned int is_header, unsigned int host_write_ptr)
1526 {
1527 struct phys_addr *pasync_sge = NULL;
1528
1529 if (is_header)
1530 pasync_sge = pasync_ctx->async_header.ring_base;
1531 else
1532 pasync_sge = pasync_ctx->async_data.ring_base;
1533
1534 return pasync_sge + host_write_ptr;
1535 }
1536
1537 static void hwi_post_async_buffers(struct beiscsi_hba *phba,
1538 unsigned int is_header)
1539 {
1540 struct hwi_controller *phwi_ctrlr;
1541 struct hwi_async_pdu_context *pasync_ctx;
1542 struct async_pdu_handle *pasync_handle;
1543 struct list_head *pfree_link, *pbusy_list;
1544 struct phys_addr *pasync_sge;
1545 unsigned int ring_id, num_entries;
1546 unsigned int host_write_num;
1547 unsigned int writables;
1548 unsigned int i = 0;
1549 u32 doorbell = 0;
1550
1551 phwi_ctrlr = phba->phwi_ctrlr;
1552 pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr);
1553
1554 if (is_header) {
1555 num_entries = pasync_ctx->async_header.num_entries;
1556 writables = min(pasync_ctx->async_header.writables,
1557 pasync_ctx->async_header.free_entries);
1558 pfree_link = pasync_ctx->async_header.free_list.next;
1559 host_write_num = pasync_ctx->async_header.host_write_ptr;
1560 ring_id = phwi_ctrlr->default_pdu_hdr.id;
1561 } else {
1562 num_entries = pasync_ctx->async_data.num_entries;
1563 writables = min(pasync_ctx->async_data.writables,
1564 pasync_ctx->async_data.free_entries);
1565 pfree_link = pasync_ctx->async_data.free_list.next;
1566 host_write_num = pasync_ctx->async_data.host_write_ptr;
1567 ring_id = phwi_ctrlr->default_pdu_data.id;
1568 }
1569
1570 writables = (writables / 8) * 8;
1571 if (writables) {
1572 for (i = 0; i < writables; i++) {
1573 pbusy_list =
1574 hwi_get_async_busy_list(pasync_ctx, is_header,
1575 host_write_num);
1576 pasync_handle =
1577 list_entry(pfree_link, struct async_pdu_handle,
1578 link);
1579 WARN_ON(!pasync_handle);
1580 pasync_handle->consumed = 0;
1581
1582 pfree_link = pfree_link->next;
1583
1584 pasync_sge = hwi_get_ring_address(pasync_ctx,
1585 is_header, host_write_num);
1586
1587 pasync_sge->hi = pasync_handle->pa.u.a32.address_lo;
1588 pasync_sge->lo = pasync_handle->pa.u.a32.address_hi;
1589
1590 list_move(&pasync_handle->link, pbusy_list);
1591
1592 host_write_num++;
1593 host_write_num = host_write_num % num_entries;
1594 }
1595
1596 if (is_header) {
1597 pasync_ctx->async_header.host_write_ptr =
1598 host_write_num;
1599 pasync_ctx->async_header.free_entries -= writables;
1600 pasync_ctx->async_header.writables -= writables;
1601 pasync_ctx->async_header.busy_entries += writables;
1602 } else {
1603 pasync_ctx->async_data.host_write_ptr = host_write_num;
1604 pasync_ctx->async_data.free_entries -= writables;
1605 pasync_ctx->async_data.writables -= writables;
1606 pasync_ctx->async_data.busy_entries += writables;
1607 }
1608
1609 doorbell |= ring_id & DB_DEF_PDU_RING_ID_MASK;
1610 doorbell |= 1 << DB_DEF_PDU_REARM_SHIFT;
1611 doorbell |= 0 << DB_DEF_PDU_EVENT_SHIFT;
1612 doorbell |= (writables & DB_DEF_PDU_CQPROC_MASK)
1613 << DB_DEF_PDU_CQPROC_SHIFT;
1614
1615 iowrite32(doorbell, phba->db_va + DB_RXULP0_OFFSET);
1616 }
1617 }
1618
1619 static void hwi_flush_default_pdu_buffer(struct beiscsi_hba *phba,
1620 struct beiscsi_conn *beiscsi_conn,
1621 struct i_t_dpdu_cqe *pdpdu_cqe)
1622 {
1623 struct hwi_controller *phwi_ctrlr;
1624 struct hwi_async_pdu_context *pasync_ctx;
1625 struct async_pdu_handle *pasync_handle = NULL;
1626 unsigned int cq_index = -1;
1627
1628 phwi_ctrlr = phba->phwi_ctrlr;
1629 pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr);
1630
1631 pasync_handle = hwi_get_async_handle(phba, beiscsi_conn, pasync_ctx,
1632 pdpdu_cqe, &cq_index);
1633 BUG_ON(pasync_handle->is_header != 0);
1634 if (pasync_handle->consumed == 0)
1635 hwi_update_async_writables(pasync_ctx, pasync_handle->is_header,
1636 cq_index);
1637
1638 hwi_free_async_msg(phba, pasync_handle->cri);
1639 hwi_post_async_buffers(phba, pasync_handle->is_header);
1640 }
1641
1642 static unsigned int
1643 hwi_fwd_async_msg(struct beiscsi_conn *beiscsi_conn,
1644 struct beiscsi_hba *phba,
1645 struct hwi_async_pdu_context *pasync_ctx, unsigned short cri)
1646 {
1647 struct list_head *plist;
1648 struct async_pdu_handle *pasync_handle;
1649 void *phdr = NULL;
1650 unsigned int hdr_len = 0, buf_len = 0;
1651 unsigned int status, index = 0, offset = 0;
1652 void *pfirst_buffer = NULL;
1653 unsigned int num_buf = 0;
1654
1655 plist = &pasync_ctx->async_entry[cri].wait_queue.list;
1656
1657 list_for_each_entry(pasync_handle, plist, link) {
1658 if (index == 0) {
1659 phdr = pasync_handle->pbuffer;
1660 hdr_len = pasync_handle->buffer_len;
1661 } else {
1662 buf_len = pasync_handle->buffer_len;
1663 if (!num_buf) {
1664 pfirst_buffer = pasync_handle->pbuffer;
1665 num_buf++;
1666 }
1667 memcpy(pfirst_buffer + offset,
1668 pasync_handle->pbuffer, buf_len);
1669 offset = buf_len;
1670 }
1671 index++;
1672 }
1673
1674 status = beiscsi_process_async_pdu(beiscsi_conn, phba,
1675 (beiscsi_conn->beiscsi_conn_cid -
1676 phba->fw_config.iscsi_cid_start),
1677 phdr, hdr_len, pfirst_buffer,
1678 buf_len);
1679
1680 if (status == 0)
1681 hwi_free_async_msg(phba, cri);
1682 return 0;
1683 }
1684
1685 static unsigned int
1686 hwi_gather_async_pdu(struct beiscsi_conn *beiscsi_conn,
1687 struct beiscsi_hba *phba,
1688 struct async_pdu_handle *pasync_handle)
1689 {
1690 struct hwi_async_pdu_context *pasync_ctx;
1691 struct hwi_controller *phwi_ctrlr;
1692 unsigned int bytes_needed = 0, status = 0;
1693 unsigned short cri = pasync_handle->cri;
1694 struct pdu_base *ppdu;
1695
1696 phwi_ctrlr = phba->phwi_ctrlr;
1697 pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr);
1698
1699 list_del(&pasync_handle->link);
1700 if (pasync_handle->is_header) {
1701 pasync_ctx->async_header.busy_entries--;
1702 if (pasync_ctx->async_entry[cri].wait_queue.hdr_received) {
1703 hwi_free_async_msg(phba, cri);
1704 BUG();
1705 }
1706
1707 pasync_ctx->async_entry[cri].wait_queue.bytes_received = 0;
1708 pasync_ctx->async_entry[cri].wait_queue.hdr_received = 1;
1709 pasync_ctx->async_entry[cri].wait_queue.hdr_len =
1710 (unsigned short)pasync_handle->buffer_len;
1711 list_add_tail(&pasync_handle->link,
1712 &pasync_ctx->async_entry[cri].wait_queue.list);
1713
1714 ppdu = pasync_handle->pbuffer;
1715 bytes_needed = ((((ppdu->dw[offsetof(struct amap_pdu_base,
1716 data_len_hi) / 32] & PDUBASE_DATALENHI_MASK) << 8) &
1717 0xFFFF0000) | ((be16_to_cpu((ppdu->
1718 dw[offsetof(struct amap_pdu_base, data_len_lo) / 32]
1719 & PDUBASE_DATALENLO_MASK) >> 16)) & 0x0000FFFF));
1720
1721 if (status == 0) {
1722 pasync_ctx->async_entry[cri].wait_queue.bytes_needed =
1723 bytes_needed;
1724
1725 if (bytes_needed == 0)
1726 status = hwi_fwd_async_msg(beiscsi_conn, phba,
1727 pasync_ctx, cri);
1728 }
1729 } else {
1730 pasync_ctx->async_data.busy_entries--;
1731 if (pasync_ctx->async_entry[cri].wait_queue.hdr_received) {
1732 list_add_tail(&pasync_handle->link,
1733 &pasync_ctx->async_entry[cri].wait_queue.
1734 list);
1735 pasync_ctx->async_entry[cri].wait_queue.
1736 bytes_received +=
1737 (unsigned short)pasync_handle->buffer_len;
1738
1739 if (pasync_ctx->async_entry[cri].wait_queue.
1740 bytes_received >=
1741 pasync_ctx->async_entry[cri].wait_queue.
1742 bytes_needed)
1743 status = hwi_fwd_async_msg(beiscsi_conn, phba,
1744 pasync_ctx, cri);
1745 }
1746 }
1747 return status;
1748 }
1749
1750 static void hwi_process_default_pdu_ring(struct beiscsi_conn *beiscsi_conn,
1751 struct beiscsi_hba *phba,
1752 struct i_t_dpdu_cqe *pdpdu_cqe)
1753 {
1754 struct hwi_controller *phwi_ctrlr;
1755 struct hwi_async_pdu_context *pasync_ctx;
1756 struct async_pdu_handle *pasync_handle = NULL;
1757 unsigned int cq_index = -1;
1758
1759 phwi_ctrlr = phba->phwi_ctrlr;
1760 pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr);
1761 pasync_handle = hwi_get_async_handle(phba, beiscsi_conn, pasync_ctx,
1762 pdpdu_cqe, &cq_index);
1763
1764 if (pasync_handle->consumed == 0)
1765 hwi_update_async_writables(pasync_ctx, pasync_handle->is_header,
1766 cq_index);
1767 hwi_gather_async_pdu(beiscsi_conn, phba, pasync_handle);
1768 hwi_post_async_buffers(phba, pasync_handle->is_header);
1769 }
1770
1771 static void beiscsi_process_mcc_isr(struct beiscsi_hba *phba)
1772 {
1773 struct be_queue_info *mcc_cq;
1774 struct be_mcc_compl *mcc_compl;
1775 unsigned int num_processed = 0;
1776
1777 mcc_cq = &phba->ctrl.mcc_obj.cq;
1778 mcc_compl = queue_tail_node(mcc_cq);
1779 mcc_compl->flags = le32_to_cpu(mcc_compl->flags);
1780 while (mcc_compl->flags & CQE_FLAGS_VALID_MASK) {
1781
1782 if (num_processed >= 32) {
1783 hwi_ring_cq_db(phba, mcc_cq->id,
1784 num_processed, 0, 0);
1785 num_processed = 0;
1786 }
1787 if (mcc_compl->flags & CQE_FLAGS_ASYNC_MASK) {
1788 /* Interpret flags as an async trailer */
1789 if (is_link_state_evt(mcc_compl->flags))
1790 /* Interpret compl as a async link evt */
1791 beiscsi_async_link_state_process(phba,
1792 (struct be_async_event_link_state *) mcc_compl);
1793 else
1794 SE_DEBUG(DBG_LVL_1,
1795 " Unsupported Async Event, flags"
1796 " = 0x%08x\n", mcc_compl->flags);
1797 } else if (mcc_compl->flags & CQE_FLAGS_COMPLETED_MASK) {
1798 be_mcc_compl_process_isr(&phba->ctrl, mcc_compl);
1799 atomic_dec(&phba->ctrl.mcc_obj.q.used);
1800 }
1801
1802 mcc_compl->flags = 0;
1803 queue_tail_inc(mcc_cq);
1804 mcc_compl = queue_tail_node(mcc_cq);
1805 mcc_compl->flags = le32_to_cpu(mcc_compl->flags);
1806 num_processed++;
1807 }
1808
1809 if (num_processed > 0)
1810 hwi_ring_cq_db(phba, mcc_cq->id, num_processed, 1, 0);
1811
1812 }
1813
1814 static unsigned int beiscsi_process_cq(struct be_eq_obj *pbe_eq)
1815 {
1816 struct be_queue_info *cq;
1817 struct sol_cqe *sol;
1818 struct dmsg_cqe *dmsg;
1819 unsigned int num_processed = 0;
1820 unsigned int tot_nump = 0;
1821 struct beiscsi_conn *beiscsi_conn;
1822 struct beiscsi_endpoint *beiscsi_ep;
1823 struct iscsi_endpoint *ep;
1824 struct beiscsi_hba *phba;
1825
1826 cq = pbe_eq->cq;
1827 sol = queue_tail_node(cq);
1828 phba = pbe_eq->phba;
1829
1830 while (sol->dw[offsetof(struct amap_sol_cqe, valid) / 32] &
1831 CQE_VALID_MASK) {
1832 be_dws_le_to_cpu(sol, sizeof(struct sol_cqe));
1833
1834 ep = phba->ep_array[(u32) ((sol->
1835 dw[offsetof(struct amap_sol_cqe, cid) / 32] &
1836 SOL_CID_MASK) >> 6) -
1837 phba->fw_config.iscsi_cid_start];
1838
1839 beiscsi_ep = ep->dd_data;
1840 beiscsi_conn = beiscsi_ep->conn;
1841
1842 if (num_processed >= 32) {
1843 hwi_ring_cq_db(phba, cq->id,
1844 num_processed, 0, 0);
1845 tot_nump += num_processed;
1846 num_processed = 0;
1847 }
1848
1849 switch ((u32) sol->dw[offsetof(struct amap_sol_cqe, code) /
1850 32] & CQE_CODE_MASK) {
1851 case SOL_CMD_COMPLETE:
1852 hwi_complete_cmd(beiscsi_conn, phba, sol);
1853 break;
1854 case DRIVERMSG_NOTIFY:
1855 SE_DEBUG(DBG_LVL_8, "Received DRIVERMSG_NOTIFY\n");
1856 dmsg = (struct dmsg_cqe *)sol;
1857 hwi_complete_drvr_msgs(beiscsi_conn, phba, sol);
1858 break;
1859 case UNSOL_HDR_NOTIFY:
1860 SE_DEBUG(DBG_LVL_8, "Received UNSOL_HDR_ NOTIFY\n");
1861 hwi_process_default_pdu_ring(beiscsi_conn, phba,
1862 (struct i_t_dpdu_cqe *)sol);
1863 break;
1864 case UNSOL_DATA_NOTIFY:
1865 SE_DEBUG(DBG_LVL_8, "Received UNSOL_DATA_NOTIFY\n");
1866 hwi_process_default_pdu_ring(beiscsi_conn, phba,
1867 (struct i_t_dpdu_cqe *)sol);
1868 break;
1869 case CXN_INVALIDATE_INDEX_NOTIFY:
1870 case CMD_INVALIDATED_NOTIFY:
1871 case CXN_INVALIDATE_NOTIFY:
1872 SE_DEBUG(DBG_LVL_1,
1873 "Ignoring CQ Error notification for cmd/cxn"
1874 "invalidate\n");
1875 break;
1876 case SOL_CMD_KILLED_DATA_DIGEST_ERR:
1877 case CMD_KILLED_INVALID_STATSN_RCVD:
1878 case CMD_KILLED_INVALID_R2T_RCVD:
1879 case CMD_CXN_KILLED_LUN_INVALID:
1880 case CMD_CXN_KILLED_ICD_INVALID:
1881 case CMD_CXN_KILLED_ITT_INVALID:
1882 case CMD_CXN_KILLED_SEQ_OUTOFORDER:
1883 case CMD_CXN_KILLED_INVALID_DATASN_RCVD:
1884 SE_DEBUG(DBG_LVL_1,
1885 "CQ Error notification for cmd.. "
1886 "code %d cid 0x%x\n",
1887 sol->dw[offsetof(struct amap_sol_cqe, code) /
1888 32] & CQE_CODE_MASK,
1889 (sol->dw[offsetof(struct amap_sol_cqe, cid) /
1890 32] & SOL_CID_MASK));
1891 break;
1892 case UNSOL_DATA_DIGEST_ERROR_NOTIFY:
1893 SE_DEBUG(DBG_LVL_1,
1894 "Digest error on def pdu ring, dropping..\n");
1895 hwi_flush_default_pdu_buffer(phba, beiscsi_conn,
1896 (struct i_t_dpdu_cqe *) sol);
1897 break;
1898 case CXN_KILLED_PDU_SIZE_EXCEEDS_DSL:
1899 case CXN_KILLED_BURST_LEN_MISMATCH:
1900 case CXN_KILLED_AHS_RCVD:
1901 case CXN_KILLED_HDR_DIGEST_ERR:
1902 case CXN_KILLED_UNKNOWN_HDR:
1903 case CXN_KILLED_STALE_ITT_TTT_RCVD:
1904 case CXN_KILLED_INVALID_ITT_TTT_RCVD:
1905 case CXN_KILLED_TIMED_OUT:
1906 case CXN_KILLED_FIN_RCVD:
1907 case CXN_KILLED_BAD_UNSOL_PDU_RCVD:
1908 case CXN_KILLED_BAD_WRB_INDEX_ERROR:
1909 case CXN_KILLED_OVER_RUN_RESIDUAL:
1910 case CXN_KILLED_UNDER_RUN_RESIDUAL:
1911 case CXN_KILLED_CMND_DATA_NOT_ON_SAME_CONN:
1912 SE_DEBUG(DBG_LVL_1, "CQ Error %d, reset CID "
1913 "0x%x...\n",
1914 sol->dw[offsetof(struct amap_sol_cqe, code) /
1915 32] & CQE_CODE_MASK,
1916 (sol->dw[offsetof(struct amap_sol_cqe, cid) /
1917 32] & CQE_CID_MASK));
1918 iscsi_conn_failure(beiscsi_conn->conn,
1919 ISCSI_ERR_CONN_FAILED);
1920 break;
1921 case CXN_KILLED_RST_SENT:
1922 case CXN_KILLED_RST_RCVD:
1923 SE_DEBUG(DBG_LVL_1, "CQ Error %d, reset"
1924 "received/sent on CID 0x%x...\n",
1925 sol->dw[offsetof(struct amap_sol_cqe, code) /
1926 32] & CQE_CODE_MASK,
1927 (sol->dw[offsetof(struct amap_sol_cqe, cid) /
1928 32] & CQE_CID_MASK));
1929 iscsi_conn_failure(beiscsi_conn->conn,
1930 ISCSI_ERR_CONN_FAILED);
1931 break;
1932 default:
1933 SE_DEBUG(DBG_LVL_1, "CQ Error Invalid code= %d "
1934 "received on CID 0x%x...\n",
1935 sol->dw[offsetof(struct amap_sol_cqe, code) /
1936 32] & CQE_CODE_MASK,
1937 (sol->dw[offsetof(struct amap_sol_cqe, cid) /
1938 32] & CQE_CID_MASK));
1939 break;
1940 }
1941
1942 AMAP_SET_BITS(struct amap_sol_cqe, valid, sol, 0);
1943 queue_tail_inc(cq);
1944 sol = queue_tail_node(cq);
1945 num_processed++;
1946 }
1947
1948 if (num_processed > 0) {
1949 tot_nump += num_processed;
1950 hwi_ring_cq_db(phba, cq->id, num_processed, 1, 0);
1951 }
1952 return tot_nump;
1953 }
1954
1955 void beiscsi_process_all_cqs(struct work_struct *work)
1956 {
1957 unsigned long flags;
1958 struct hwi_controller *phwi_ctrlr;
1959 struct hwi_context_memory *phwi_context;
1960 struct be_eq_obj *pbe_eq;
1961 struct beiscsi_hba *phba =
1962 container_of(work, struct beiscsi_hba, work_cqs);
1963
1964 phwi_ctrlr = phba->phwi_ctrlr;
1965 phwi_context = phwi_ctrlr->phwi_ctxt;
1966 if (phba->msix_enabled)
1967 pbe_eq = &phwi_context->be_eq[phba->num_cpus];
1968 else
1969 pbe_eq = &phwi_context->be_eq[0];
1970
1971 if (phba->todo_mcc_cq) {
1972 spin_lock_irqsave(&phba->isr_lock, flags);
1973 phba->todo_mcc_cq = 0;
1974 spin_unlock_irqrestore(&phba->isr_lock, flags);
1975 beiscsi_process_mcc_isr(phba);
1976 }
1977
1978 if (phba->todo_cq) {
1979 spin_lock_irqsave(&phba->isr_lock, flags);
1980 phba->todo_cq = 0;
1981 spin_unlock_irqrestore(&phba->isr_lock, flags);
1982 beiscsi_process_cq(pbe_eq);
1983 }
1984 }
1985
1986 static int be_iopoll(struct blk_iopoll *iop, int budget)
1987 {
1988 static unsigned int ret;
1989 struct beiscsi_hba *phba;
1990 struct be_eq_obj *pbe_eq;
1991
1992 pbe_eq = container_of(iop, struct be_eq_obj, iopoll);
1993 ret = beiscsi_process_cq(pbe_eq);
1994 if (ret < budget) {
1995 phba = pbe_eq->phba;
1996 blk_iopoll_complete(iop);
1997 SE_DEBUG(DBG_LVL_8, "rearm pbe_eq->q.id =%d\n", pbe_eq->q.id);
1998 hwi_ring_eq_db(phba, pbe_eq->q.id, 0, 0, 1, 1);
1999 }
2000 return ret;
2001 }
2002
2003 static void
2004 hwi_write_sgl(struct iscsi_wrb *pwrb, struct scatterlist *sg,
2005 unsigned int num_sg, struct beiscsi_io_task *io_task)
2006 {
2007 struct iscsi_sge *psgl;
2008 unsigned int sg_len, index;
2009 unsigned int sge_len = 0;
2010 unsigned long long addr;
2011 struct scatterlist *l_sg;
2012 unsigned int offset;
2013
2014 AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_lo, pwrb,
2015 io_task->bhs_pa.u.a32.address_lo);
2016 AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_hi, pwrb,
2017 io_task->bhs_pa.u.a32.address_hi);
2018
2019 l_sg = sg;
2020 for (index = 0; (index < num_sg) && (index < 2); index++,
2021 sg = sg_next(sg)) {
2022 if (index == 0) {
2023 sg_len = sg_dma_len(sg);
2024 addr = (u64) sg_dma_address(sg);
2025 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_lo, pwrb,
2026 ((u32)(addr & 0xFFFFFFFF)));
2027 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_hi, pwrb,
2028 ((u32)(addr >> 32)));
2029 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_len, pwrb,
2030 sg_len);
2031 sge_len = sg_len;
2032 } else {
2033 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_r2t_offset,
2034 pwrb, sge_len);
2035 sg_len = sg_dma_len(sg);
2036 addr = (u64) sg_dma_address(sg);
2037 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_addr_lo, pwrb,
2038 ((u32)(addr & 0xFFFFFFFF)));
2039 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_addr_hi, pwrb,
2040 ((u32)(addr >> 32)));
2041 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_len, pwrb,
2042 sg_len);
2043 }
2044 }
2045 psgl = (struct iscsi_sge *)io_task->psgl_handle->pfrag;
2046 memset(psgl, 0, sizeof(*psgl) * BE2_SGE);
2047
2048 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, io_task->bhs_len - 2);
2049
2050 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
2051 io_task->bhs_pa.u.a32.address_hi);
2052 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
2053 io_task->bhs_pa.u.a32.address_lo);
2054
2055 if (num_sg == 1) {
2056 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb,
2057 1);
2058 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_last, pwrb,
2059 0);
2060 } else if (num_sg == 2) {
2061 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb,
2062 0);
2063 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_last, pwrb,
2064 1);
2065 } else {
2066 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb,
2067 0);
2068 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_last, pwrb,
2069 0);
2070 }
2071 sg = l_sg;
2072 psgl++;
2073 psgl++;
2074 offset = 0;
2075 for (index = 0; index < num_sg; index++, sg = sg_next(sg), psgl++) {
2076 sg_len = sg_dma_len(sg);
2077 addr = (u64) sg_dma_address(sg);
2078 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
2079 (addr & 0xFFFFFFFF));
2080 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
2081 (addr >> 32));
2082 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, sg_len);
2083 AMAP_SET_BITS(struct amap_iscsi_sge, sge_offset, psgl, offset);
2084 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 0);
2085 offset += sg_len;
2086 }
2087 psgl--;
2088 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 1);
2089 }
2090
2091 static void hwi_write_buffer(struct iscsi_wrb *pwrb, struct iscsi_task *task)
2092 {
2093 struct iscsi_sge *psgl;
2094 unsigned long long addr;
2095 struct beiscsi_io_task *io_task = task->dd_data;
2096 struct beiscsi_conn *beiscsi_conn = io_task->conn;
2097 struct beiscsi_hba *phba = beiscsi_conn->phba;
2098
2099 io_task->bhs_len = sizeof(struct be_nonio_bhs) - 2;
2100 AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_lo, pwrb,
2101 io_task->bhs_pa.u.a32.address_lo);
2102 AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_hi, pwrb,
2103 io_task->bhs_pa.u.a32.address_hi);
2104
2105 if (task->data) {
2106 if (task->data_count) {
2107 AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 1);
2108 addr = (u64) pci_map_single(phba->pcidev,
2109 task->data,
2110 task->data_count, 1);
2111 } else {
2112 AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 0);
2113 addr = 0;
2114 }
2115 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_lo, pwrb,
2116 ((u32)(addr & 0xFFFFFFFF)));
2117 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_hi, pwrb,
2118 ((u32)(addr >> 32)));
2119 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_len, pwrb,
2120 task->data_count);
2121
2122 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb, 1);
2123 } else {
2124 AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 0);
2125 addr = 0;
2126 }
2127
2128 psgl = (struct iscsi_sge *)io_task->psgl_handle->pfrag;
2129
2130 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, io_task->bhs_len);
2131
2132 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
2133 io_task->bhs_pa.u.a32.address_hi);
2134 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
2135 io_task->bhs_pa.u.a32.address_lo);
2136 if (task->data) {
2137 psgl++;
2138 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl, 0);
2139 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl, 0);
2140 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, 0);
2141 AMAP_SET_BITS(struct amap_iscsi_sge, sge_offset, psgl, 0);
2142 AMAP_SET_BITS(struct amap_iscsi_sge, rsvd0, psgl, 0);
2143 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 0);
2144
2145 psgl++;
2146 if (task->data) {
2147 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
2148 ((u32)(addr & 0xFFFFFFFF)));
2149 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
2150 ((u32)(addr >> 32)));
2151 }
2152 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, 0x106);
2153 }
2154 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 1);
2155 }
2156
2157 static void beiscsi_find_mem_req(struct beiscsi_hba *phba)
2158 {
2159 unsigned int num_cq_pages, num_async_pdu_buf_pages;
2160 unsigned int num_async_pdu_data_pages, wrb_sz_per_cxn;
2161 unsigned int num_async_pdu_buf_sgl_pages, num_async_pdu_data_sgl_pages;
2162
2163 num_cq_pages = PAGES_REQUIRED(phba->params.num_cq_entries * \
2164 sizeof(struct sol_cqe));
2165 num_async_pdu_buf_pages =
2166 PAGES_REQUIRED(phba->params.asyncpdus_per_ctrl * \
2167 phba->params.defpdu_hdr_sz);
2168 num_async_pdu_buf_sgl_pages =
2169 PAGES_REQUIRED(phba->params.asyncpdus_per_ctrl * \
2170 sizeof(struct phys_addr));
2171 num_async_pdu_data_pages =
2172 PAGES_REQUIRED(phba->params.asyncpdus_per_ctrl * \
2173 phba->params.defpdu_data_sz);
2174 num_async_pdu_data_sgl_pages =
2175 PAGES_REQUIRED(phba->params.asyncpdus_per_ctrl * \
2176 sizeof(struct phys_addr));
2177
2178 phba->params.hwi_ws_sz = sizeof(struct hwi_controller);
2179
2180 phba->mem_req[ISCSI_MEM_GLOBAL_HEADER] = 2 *
2181 BE_ISCSI_PDU_HEADER_SIZE;
2182 phba->mem_req[HWI_MEM_ADDN_CONTEXT] =
2183 sizeof(struct hwi_context_memory);
2184
2185
2186 phba->mem_req[HWI_MEM_WRB] = sizeof(struct iscsi_wrb)
2187 * (phba->params.wrbs_per_cxn)
2188 * phba->params.cxns_per_ctrl;
2189 wrb_sz_per_cxn = sizeof(struct wrb_handle) *
2190 (phba->params.wrbs_per_cxn);
2191 phba->mem_req[HWI_MEM_WRBH] = roundup_pow_of_two((wrb_sz_per_cxn) *
2192 phba->params.cxns_per_ctrl);
2193
2194 phba->mem_req[HWI_MEM_SGLH] = sizeof(struct sgl_handle) *
2195 phba->params.icds_per_ctrl;
2196 phba->mem_req[HWI_MEM_SGE] = sizeof(struct iscsi_sge) *
2197 phba->params.num_sge_per_io * phba->params.icds_per_ctrl;
2198
2199 phba->mem_req[HWI_MEM_ASYNC_HEADER_BUF] =
2200 num_async_pdu_buf_pages * PAGE_SIZE;
2201 phba->mem_req[HWI_MEM_ASYNC_DATA_BUF] =
2202 num_async_pdu_data_pages * PAGE_SIZE;
2203 phba->mem_req[HWI_MEM_ASYNC_HEADER_RING] =
2204 num_async_pdu_buf_sgl_pages * PAGE_SIZE;
2205 phba->mem_req[HWI_MEM_ASYNC_DATA_RING] =
2206 num_async_pdu_data_sgl_pages * PAGE_SIZE;
2207 phba->mem_req[HWI_MEM_ASYNC_HEADER_HANDLE] =
2208 phba->params.asyncpdus_per_ctrl *
2209 sizeof(struct async_pdu_handle);
2210 phba->mem_req[HWI_MEM_ASYNC_DATA_HANDLE] =
2211 phba->params.asyncpdus_per_ctrl *
2212 sizeof(struct async_pdu_handle);
2213 phba->mem_req[HWI_MEM_ASYNC_PDU_CONTEXT] =
2214 sizeof(struct hwi_async_pdu_context) +
2215 (phba->params.cxns_per_ctrl * sizeof(struct hwi_async_entry));
2216 }
2217
2218 static int beiscsi_alloc_mem(struct beiscsi_hba *phba)
2219 {
2220 struct be_mem_descriptor *mem_descr;
2221 dma_addr_t bus_add;
2222 struct mem_array *mem_arr, *mem_arr_orig;
2223 unsigned int i, j, alloc_size, curr_alloc_size;
2224
2225 phba->phwi_ctrlr = kmalloc(phba->params.hwi_ws_sz, GFP_KERNEL);
2226 if (!phba->phwi_ctrlr)
2227 return -ENOMEM;
2228
2229 phba->init_mem = kcalloc(SE_MEM_MAX, sizeof(*mem_descr),
2230 GFP_KERNEL);
2231 if (!phba->init_mem) {
2232 kfree(phba->phwi_ctrlr);
2233 return -ENOMEM;
2234 }
2235
2236 mem_arr_orig = kmalloc(sizeof(*mem_arr_orig) * BEISCSI_MAX_FRAGS_INIT,
2237 GFP_KERNEL);
2238 if (!mem_arr_orig) {
2239 kfree(phba->init_mem);
2240 kfree(phba->phwi_ctrlr);
2241 return -ENOMEM;
2242 }
2243
2244 mem_descr = phba->init_mem;
2245 for (i = 0; i < SE_MEM_MAX; i++) {
2246 j = 0;
2247 mem_arr = mem_arr_orig;
2248 alloc_size = phba->mem_req[i];
2249 memset(mem_arr, 0, sizeof(struct mem_array) *
2250 BEISCSI_MAX_FRAGS_INIT);
2251 curr_alloc_size = min(be_max_phys_size * 1024, alloc_size);
2252 do {
2253 mem_arr->virtual_address = pci_alloc_consistent(
2254 phba->pcidev,
2255 curr_alloc_size,
2256 &bus_add);
2257 if (!mem_arr->virtual_address) {
2258 if (curr_alloc_size <= BE_MIN_MEM_SIZE)
2259 goto free_mem;
2260 if (curr_alloc_size -
2261 rounddown_pow_of_two(curr_alloc_size))
2262 curr_alloc_size = rounddown_pow_of_two
2263 (curr_alloc_size);
2264 else
2265 curr_alloc_size = curr_alloc_size / 2;
2266 } else {
2267 mem_arr->bus_address.u.
2268 a64.address = (__u64) bus_add;
2269 mem_arr->size = curr_alloc_size;
2270 alloc_size -= curr_alloc_size;
2271 curr_alloc_size = min(be_max_phys_size *
2272 1024, alloc_size);
2273 j++;
2274 mem_arr++;
2275 }
2276 } while (alloc_size);
2277 mem_descr->num_elements = j;
2278 mem_descr->size_in_bytes = phba->mem_req[i];
2279 mem_descr->mem_array = kmalloc(sizeof(*mem_arr) * j,
2280 GFP_KERNEL);
2281 if (!mem_descr->mem_array)
2282 goto free_mem;
2283
2284 memcpy(mem_descr->mem_array, mem_arr_orig,
2285 sizeof(struct mem_array) * j);
2286 mem_descr++;
2287 }
2288 kfree(mem_arr_orig);
2289 return 0;
2290 free_mem:
2291 mem_descr->num_elements = j;
2292 while ((i) || (j)) {
2293 for (j = mem_descr->num_elements; j > 0; j--) {
2294 pci_free_consistent(phba->pcidev,
2295 mem_descr->mem_array[j - 1].size,
2296 mem_descr->mem_array[j - 1].
2297 virtual_address,
2298 (unsigned long)mem_descr->
2299 mem_array[j - 1].
2300 bus_address.u.a64.address);
2301 }
2302 if (i) {
2303 i--;
2304 kfree(mem_descr->mem_array);
2305 mem_descr--;
2306 }
2307 }
2308 kfree(mem_arr_orig);
2309 kfree(phba->init_mem);
2310 kfree(phba->phwi_ctrlr);
2311 return -ENOMEM;
2312 }
2313
2314 static int beiscsi_get_memory(struct beiscsi_hba *phba)
2315 {
2316 beiscsi_find_mem_req(phba);
2317 return beiscsi_alloc_mem(phba);
2318 }
2319
2320 static void iscsi_init_global_templates(struct beiscsi_hba *phba)
2321 {
2322 struct pdu_data_out *pdata_out;
2323 struct pdu_nop_out *pnop_out;
2324 struct be_mem_descriptor *mem_descr;
2325
2326 mem_descr = phba->init_mem;
2327 mem_descr += ISCSI_MEM_GLOBAL_HEADER;
2328 pdata_out =
2329 (struct pdu_data_out *)mem_descr->mem_array[0].virtual_address;
2330 memset(pdata_out, 0, BE_ISCSI_PDU_HEADER_SIZE);
2331
2332 AMAP_SET_BITS(struct amap_pdu_data_out, opcode, pdata_out,
2333 IIOC_SCSI_DATA);
2334
2335 pnop_out =
2336 (struct pdu_nop_out *)((unsigned char *)mem_descr->mem_array[0].
2337 virtual_address + BE_ISCSI_PDU_HEADER_SIZE);
2338
2339 memset(pnop_out, 0, BE_ISCSI_PDU_HEADER_SIZE);
2340 AMAP_SET_BITS(struct amap_pdu_nop_out, ttt, pnop_out, 0xFFFFFFFF);
2341 AMAP_SET_BITS(struct amap_pdu_nop_out, f_bit, pnop_out, 1);
2342 AMAP_SET_BITS(struct amap_pdu_nop_out, i_bit, pnop_out, 0);
2343 }
2344
2345 static void beiscsi_init_wrb_handle(struct beiscsi_hba *phba)
2346 {
2347 struct be_mem_descriptor *mem_descr_wrbh, *mem_descr_wrb;
2348 struct wrb_handle *pwrb_handle;
2349 struct hwi_controller *phwi_ctrlr;
2350 struct hwi_wrb_context *pwrb_context;
2351 struct iscsi_wrb *pwrb;
2352 unsigned int num_cxn_wrbh;
2353 unsigned int num_cxn_wrb, j, idx, index;
2354
2355 mem_descr_wrbh = phba->init_mem;
2356 mem_descr_wrbh += HWI_MEM_WRBH;
2357
2358 mem_descr_wrb = phba->init_mem;
2359 mem_descr_wrb += HWI_MEM_WRB;
2360
2361 idx = 0;
2362 pwrb_handle = mem_descr_wrbh->mem_array[idx].virtual_address;
2363 num_cxn_wrbh = ((mem_descr_wrbh->mem_array[idx].size) /
2364 ((sizeof(struct wrb_handle)) *
2365 phba->params.wrbs_per_cxn));
2366 phwi_ctrlr = phba->phwi_ctrlr;
2367
2368 for (index = 0; index < phba->params.cxns_per_ctrl * 2; index += 2) {
2369 pwrb_context = &phwi_ctrlr->wrb_context[index];
2370 pwrb_context->pwrb_handle_base =
2371 kzalloc(sizeof(struct wrb_handle *) *
2372 phba->params.wrbs_per_cxn, GFP_KERNEL);
2373 pwrb_context->pwrb_handle_basestd =
2374 kzalloc(sizeof(struct wrb_handle *) *
2375 phba->params.wrbs_per_cxn, GFP_KERNEL);
2376 if (num_cxn_wrbh) {
2377 pwrb_context->alloc_index = 0;
2378 pwrb_context->wrb_handles_available = 0;
2379 for (j = 0; j < phba->params.wrbs_per_cxn; j++) {
2380 pwrb_context->pwrb_handle_base[j] = pwrb_handle;
2381 pwrb_context->pwrb_handle_basestd[j] =
2382 pwrb_handle;
2383 pwrb_context->wrb_handles_available++;
2384 pwrb_handle->wrb_index = j;
2385 pwrb_handle++;
2386 }
2387 pwrb_context->free_index = 0;
2388 num_cxn_wrbh--;
2389 } else {
2390 idx++;
2391 pwrb_handle =
2392 mem_descr_wrbh->mem_array[idx].virtual_address;
2393 num_cxn_wrbh =
2394 ((mem_descr_wrbh->mem_array[idx].size) /
2395 ((sizeof(struct wrb_handle)) *
2396 phba->params.wrbs_per_cxn));
2397 pwrb_context->alloc_index = 0;
2398 for (j = 0; j < phba->params.wrbs_per_cxn; j++) {
2399 pwrb_context->pwrb_handle_base[j] = pwrb_handle;
2400 pwrb_context->pwrb_handle_basestd[j] =
2401 pwrb_handle;
2402 pwrb_context->wrb_handles_available++;
2403 pwrb_handle->wrb_index = j;
2404 pwrb_handle++;
2405 }
2406 pwrb_context->free_index = 0;
2407 num_cxn_wrbh--;
2408 }
2409 }
2410 idx = 0;
2411 pwrb = mem_descr_wrb->mem_array[idx].virtual_address;
2412 num_cxn_wrb = (mem_descr_wrb->mem_array[idx].size) /
2413 ((sizeof(struct iscsi_wrb) *
2414 phba->params.wrbs_per_cxn));
2415 for (index = 0; index < phba->params.cxns_per_ctrl * 2; index += 2) {
2416 pwrb_context = &phwi_ctrlr->wrb_context[index];
2417 if (num_cxn_wrb) {
2418 for (j = 0; j < phba->params.wrbs_per_cxn; j++) {
2419 pwrb_handle = pwrb_context->pwrb_handle_base[j];
2420 pwrb_handle->pwrb = pwrb;
2421 pwrb++;
2422 }
2423 num_cxn_wrb--;
2424 } else {
2425 idx++;
2426 pwrb = mem_descr_wrb->mem_array[idx].virtual_address;
2427 num_cxn_wrb = (mem_descr_wrb->mem_array[idx].size) /
2428 ((sizeof(struct iscsi_wrb) *
2429 phba->params.wrbs_per_cxn));
2430 for (j = 0; j < phba->params.wrbs_per_cxn; j++) {
2431 pwrb_handle = pwrb_context->pwrb_handle_base[j];
2432 pwrb_handle->pwrb = pwrb;
2433 pwrb++;
2434 }
2435 num_cxn_wrb--;
2436 }
2437 }
2438 }
2439
2440 static void hwi_init_async_pdu_ctx(struct beiscsi_hba *phba)
2441 {
2442 struct hwi_controller *phwi_ctrlr;
2443 struct hba_parameters *p = &phba->params;
2444 struct hwi_async_pdu_context *pasync_ctx;
2445 struct async_pdu_handle *pasync_header_h, *pasync_data_h;
2446 unsigned int index;
2447 struct be_mem_descriptor *mem_descr;
2448
2449 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2450 mem_descr += HWI_MEM_ASYNC_PDU_CONTEXT;
2451
2452 phwi_ctrlr = phba->phwi_ctrlr;
2453 phwi_ctrlr->phwi_ctxt->pasync_ctx = (struct hwi_async_pdu_context *)
2454 mem_descr->mem_array[0].virtual_address;
2455 pasync_ctx = phwi_ctrlr->phwi_ctxt->pasync_ctx;
2456 memset(pasync_ctx, 0, sizeof(*pasync_ctx));
2457
2458 pasync_ctx->async_header.num_entries = p->asyncpdus_per_ctrl;
2459 pasync_ctx->async_header.buffer_size = p->defpdu_hdr_sz;
2460 pasync_ctx->async_data.buffer_size = p->defpdu_data_sz;
2461 pasync_ctx->async_data.num_entries = p->asyncpdus_per_ctrl;
2462
2463 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2464 mem_descr += HWI_MEM_ASYNC_HEADER_BUF;
2465 if (mem_descr->mem_array[0].virtual_address) {
2466 SE_DEBUG(DBG_LVL_8,
2467 "hwi_init_async_pdu_ctx HWI_MEM_ASYNC_HEADER_BUF"
2468 "va=%p\n", mem_descr->mem_array[0].virtual_address);
2469 } else
2470 shost_printk(KERN_WARNING, phba->shost,
2471 "No Virtual address\n");
2472
2473 pasync_ctx->async_header.va_base =
2474 mem_descr->mem_array[0].virtual_address;
2475
2476 pasync_ctx->async_header.pa_base.u.a64.address =
2477 mem_descr->mem_array[0].bus_address.u.a64.address;
2478
2479 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2480 mem_descr += HWI_MEM_ASYNC_HEADER_RING;
2481 if (mem_descr->mem_array[0].virtual_address) {
2482 SE_DEBUG(DBG_LVL_8,
2483 "hwi_init_async_pdu_ctx HWI_MEM_ASYNC_HEADER_RING"
2484 "va=%p\n", mem_descr->mem_array[0].virtual_address);
2485 } else
2486 shost_printk(KERN_WARNING, phba->shost,
2487 "No Virtual address\n");
2488 pasync_ctx->async_header.ring_base =
2489 mem_descr->mem_array[0].virtual_address;
2490
2491 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2492 mem_descr += HWI_MEM_ASYNC_HEADER_HANDLE;
2493 if (mem_descr->mem_array[0].virtual_address) {
2494 SE_DEBUG(DBG_LVL_8,
2495 "hwi_init_async_pdu_ctx HWI_MEM_ASYNC_HEADER_HANDLE"
2496 "va=%p\n", mem_descr->mem_array[0].virtual_address);
2497 } else
2498 shost_printk(KERN_WARNING, phba->shost,
2499 "No Virtual address\n");
2500
2501 pasync_ctx->async_header.handle_base =
2502 mem_descr->mem_array[0].virtual_address;
2503 pasync_ctx->async_header.writables = 0;
2504 INIT_LIST_HEAD(&pasync_ctx->async_header.free_list);
2505
2506 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2507 mem_descr += HWI_MEM_ASYNC_DATA_BUF;
2508 if (mem_descr->mem_array[0].virtual_address) {
2509 SE_DEBUG(DBG_LVL_8,
2510 "hwi_init_async_pdu_ctx HWI_MEM_ASYNC_DATA_BUF"
2511 "va=%p\n", mem_descr->mem_array[0].virtual_address);
2512 } else
2513 shost_printk(KERN_WARNING, phba->shost,
2514 "No Virtual address\n");
2515 pasync_ctx->async_data.va_base =
2516 mem_descr->mem_array[0].virtual_address;
2517 pasync_ctx->async_data.pa_base.u.a64.address =
2518 mem_descr->mem_array[0].bus_address.u.a64.address;
2519
2520 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2521 mem_descr += HWI_MEM_ASYNC_DATA_RING;
2522 if (mem_descr->mem_array[0].virtual_address) {
2523 SE_DEBUG(DBG_LVL_8,
2524 "hwi_init_async_pdu_ctx HWI_MEM_ASYNC_DATA_RING"
2525 "va=%p\n", mem_descr->mem_array[0].virtual_address);
2526 } else
2527 shost_printk(KERN_WARNING, phba->shost,
2528 "No Virtual address\n");
2529
2530 pasync_ctx->async_data.ring_base =
2531 mem_descr->mem_array[0].virtual_address;
2532
2533 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2534 mem_descr += HWI_MEM_ASYNC_DATA_HANDLE;
2535 if (!mem_descr->mem_array[0].virtual_address)
2536 shost_printk(KERN_WARNING, phba->shost,
2537 "No Virtual address\n");
2538
2539 pasync_ctx->async_data.handle_base =
2540 mem_descr->mem_array[0].virtual_address;
2541 pasync_ctx->async_data.writables = 0;
2542 INIT_LIST_HEAD(&pasync_ctx->async_data.free_list);
2543
2544 pasync_header_h =
2545 (struct async_pdu_handle *)pasync_ctx->async_header.handle_base;
2546 pasync_data_h =
2547 (struct async_pdu_handle *)pasync_ctx->async_data.handle_base;
2548
2549 for (index = 0; index < p->asyncpdus_per_ctrl; index++) {
2550 pasync_header_h->cri = -1;
2551 pasync_header_h->index = (char)index;
2552 INIT_LIST_HEAD(&pasync_header_h->link);
2553 pasync_header_h->pbuffer =
2554 (void *)((unsigned long)
2555 (pasync_ctx->async_header.va_base) +
2556 (p->defpdu_hdr_sz * index));
2557
2558 pasync_header_h->pa.u.a64.address =
2559 pasync_ctx->async_header.pa_base.u.a64.address +
2560 (p->defpdu_hdr_sz * index);
2561
2562 list_add_tail(&pasync_header_h->link,
2563 &pasync_ctx->async_header.free_list);
2564 pasync_header_h++;
2565 pasync_ctx->async_header.free_entries++;
2566 pasync_ctx->async_header.writables++;
2567
2568 INIT_LIST_HEAD(&pasync_ctx->async_entry[index].wait_queue.list);
2569 INIT_LIST_HEAD(&pasync_ctx->async_entry[index].
2570 header_busy_list);
2571 pasync_data_h->cri = -1;
2572 pasync_data_h->index = (char)index;
2573 INIT_LIST_HEAD(&pasync_data_h->link);
2574 pasync_data_h->pbuffer =
2575 (void *)((unsigned long)
2576 (pasync_ctx->async_data.va_base) +
2577 (p->defpdu_data_sz * index));
2578
2579 pasync_data_h->pa.u.a64.address =
2580 pasync_ctx->async_data.pa_base.u.a64.address +
2581 (p->defpdu_data_sz * index);
2582
2583 list_add_tail(&pasync_data_h->link,
2584 &pasync_ctx->async_data.free_list);
2585 pasync_data_h++;
2586 pasync_ctx->async_data.free_entries++;
2587 pasync_ctx->async_data.writables++;
2588
2589 INIT_LIST_HEAD(&pasync_ctx->async_entry[index].data_busy_list);
2590 }
2591
2592 pasync_ctx->async_header.host_write_ptr = 0;
2593 pasync_ctx->async_header.ep_read_ptr = -1;
2594 pasync_ctx->async_data.host_write_ptr = 0;
2595 pasync_ctx->async_data.ep_read_ptr = -1;
2596 }
2597
2598 static int
2599 be_sgl_create_contiguous(void *virtual_address,
2600 u64 physical_address, u32 length,
2601 struct be_dma_mem *sgl)
2602 {
2603 WARN_ON(!virtual_address);
2604 WARN_ON(!physical_address);
2605 WARN_ON(!length > 0);
2606 WARN_ON(!sgl);
2607
2608 sgl->va = virtual_address;
2609 sgl->dma = (unsigned long)physical_address;
2610 sgl->size = length;
2611
2612 return 0;
2613 }
2614
2615 static void be_sgl_destroy_contiguous(struct be_dma_mem *sgl)
2616 {
2617 memset(sgl, 0, sizeof(*sgl));
2618 }
2619
2620 static void
2621 hwi_build_be_sgl_arr(struct beiscsi_hba *phba,
2622 struct mem_array *pmem, struct be_dma_mem *sgl)
2623 {
2624 if (sgl->va)
2625 be_sgl_destroy_contiguous(sgl);
2626
2627 be_sgl_create_contiguous(pmem->virtual_address,
2628 pmem->bus_address.u.a64.address,
2629 pmem->size, sgl);
2630 }
2631
2632 static void
2633 hwi_build_be_sgl_by_offset(struct beiscsi_hba *phba,
2634 struct mem_array *pmem, struct be_dma_mem *sgl)
2635 {
2636 if (sgl->va)
2637 be_sgl_destroy_contiguous(sgl);
2638
2639 be_sgl_create_contiguous((unsigned char *)pmem->virtual_address,
2640 pmem->bus_address.u.a64.address,
2641 pmem->size, sgl);
2642 }
2643
2644 static int be_fill_queue(struct be_queue_info *q,
2645 u16 len, u16 entry_size, void *vaddress)
2646 {
2647 struct be_dma_mem *mem = &q->dma_mem;
2648
2649 memset(q, 0, sizeof(*q));
2650 q->len = len;
2651 q->entry_size = entry_size;
2652 mem->size = len * entry_size;
2653 mem->va = vaddress;
2654 if (!mem->va)
2655 return -ENOMEM;
2656 memset(mem->va, 0, mem->size);
2657 return 0;
2658 }
2659
2660 static int beiscsi_create_eqs(struct beiscsi_hba *phba,
2661 struct hwi_context_memory *phwi_context)
2662 {
2663 unsigned int i, num_eq_pages;
2664 int ret, eq_for_mcc;
2665 struct be_queue_info *eq;
2666 struct be_dma_mem *mem;
2667 void *eq_vaddress;
2668 dma_addr_t paddr;
2669
2670 num_eq_pages = PAGES_REQUIRED(phba->params.num_eq_entries * \
2671 sizeof(struct be_eq_entry));
2672
2673 if (phba->msix_enabled)
2674 eq_for_mcc = 1;
2675 else
2676 eq_for_mcc = 0;
2677 for (i = 0; i < (phba->num_cpus + eq_for_mcc); i++) {
2678 eq = &phwi_context->be_eq[i].q;
2679 mem = &eq->dma_mem;
2680 phwi_context->be_eq[i].phba = phba;
2681 eq_vaddress = pci_alloc_consistent(phba->pcidev,
2682 num_eq_pages * PAGE_SIZE,
2683 &paddr);
2684 if (!eq_vaddress)
2685 goto create_eq_error;
2686
2687 mem->va = eq_vaddress;
2688 ret = be_fill_queue(eq, phba->params.num_eq_entries,
2689 sizeof(struct be_eq_entry), eq_vaddress);
2690 if (ret) {
2691 shost_printk(KERN_ERR, phba->shost,
2692 "be_fill_queue Failed for EQ\n");
2693 goto create_eq_error;
2694 }
2695
2696 mem->dma = paddr;
2697 ret = beiscsi_cmd_eq_create(&phba->ctrl, eq,
2698 phwi_context->cur_eqd);
2699 if (ret) {
2700 shost_printk(KERN_ERR, phba->shost,
2701 "beiscsi_cmd_eq_create"
2702 "Failedfor EQ\n");
2703 goto create_eq_error;
2704 }
2705 SE_DEBUG(DBG_LVL_8, "eqid = %d\n", phwi_context->be_eq[i].q.id);
2706 }
2707 return 0;
2708 create_eq_error:
2709 for (i = 0; i < (phba->num_cpus + 1); i++) {
2710 eq = &phwi_context->be_eq[i].q;
2711 mem = &eq->dma_mem;
2712 if (mem->va)
2713 pci_free_consistent(phba->pcidev, num_eq_pages
2714 * PAGE_SIZE,
2715 mem->va, mem->dma);
2716 }
2717 return ret;
2718 }
2719
2720 static int beiscsi_create_cqs(struct beiscsi_hba *phba,
2721 struct hwi_context_memory *phwi_context)
2722 {
2723 unsigned int i, num_cq_pages;
2724 int ret;
2725 struct be_queue_info *cq, *eq;
2726 struct be_dma_mem *mem;
2727 struct be_eq_obj *pbe_eq;
2728 void *cq_vaddress;
2729 dma_addr_t paddr;
2730
2731 num_cq_pages = PAGES_REQUIRED(phba->params.num_cq_entries * \
2732 sizeof(struct sol_cqe));
2733
2734 for (i = 0; i < phba->num_cpus; i++) {
2735 cq = &phwi_context->be_cq[i];
2736 eq = &phwi_context->be_eq[i].q;
2737 pbe_eq = &phwi_context->be_eq[i];
2738 pbe_eq->cq = cq;
2739 pbe_eq->phba = phba;
2740 mem = &cq->dma_mem;
2741 cq_vaddress = pci_alloc_consistent(phba->pcidev,
2742 num_cq_pages * PAGE_SIZE,
2743 &paddr);
2744 if (!cq_vaddress)
2745 goto create_cq_error;
2746 ret = be_fill_queue(cq, phba->params.num_cq_entries,
2747 sizeof(struct sol_cqe), cq_vaddress);
2748 if (ret) {
2749 shost_printk(KERN_ERR, phba->shost,
2750 "be_fill_queue Failed for ISCSI CQ\n");
2751 goto create_cq_error;
2752 }
2753
2754 mem->dma = paddr;
2755 ret = beiscsi_cmd_cq_create(&phba->ctrl, cq, eq, false,
2756 false, 0);
2757 if (ret) {
2758 shost_printk(KERN_ERR, phba->shost,
2759 "beiscsi_cmd_eq_create"
2760 "Failed for ISCSI CQ\n");
2761 goto create_cq_error;
2762 }
2763 SE_DEBUG(DBG_LVL_8, "iscsi cq_id is %d for eq_id %d\n",
2764 cq->id, eq->id);
2765 SE_DEBUG(DBG_LVL_8, "ISCSI CQ CREATED\n");
2766 }
2767 return 0;
2768
2769 create_cq_error:
2770 for (i = 0; i < phba->num_cpus; i++) {
2771 cq = &phwi_context->be_cq[i];
2772 mem = &cq->dma_mem;
2773 if (mem->va)
2774 pci_free_consistent(phba->pcidev, num_cq_pages
2775 * PAGE_SIZE,
2776 mem->va, mem->dma);
2777 }
2778 return ret;
2779
2780 }
2781
2782 static int
2783 beiscsi_create_def_hdr(struct beiscsi_hba *phba,
2784 struct hwi_context_memory *phwi_context,
2785 struct hwi_controller *phwi_ctrlr,
2786 unsigned int def_pdu_ring_sz)
2787 {
2788 unsigned int idx;
2789 int ret;
2790 struct be_queue_info *dq, *cq;
2791 struct be_dma_mem *mem;
2792 struct be_mem_descriptor *mem_descr;
2793 void *dq_vaddress;
2794
2795 idx = 0;
2796 dq = &phwi_context->be_def_hdrq;
2797 cq = &phwi_context->be_cq[0];
2798 mem = &dq->dma_mem;
2799 mem_descr = phba->init_mem;
2800 mem_descr += HWI_MEM_ASYNC_HEADER_RING;
2801 dq_vaddress = mem_descr->mem_array[idx].virtual_address;
2802 ret = be_fill_queue(dq, mem_descr->mem_array[0].size /
2803 sizeof(struct phys_addr),
2804 sizeof(struct phys_addr), dq_vaddress);
2805 if (ret) {
2806 shost_printk(KERN_ERR, phba->shost,
2807 "be_fill_queue Failed for DEF PDU HDR\n");
2808 return ret;
2809 }
2810 mem->dma = (unsigned long)mem_descr->mem_array[idx].
2811 bus_address.u.a64.address;
2812 ret = be_cmd_create_default_pdu_queue(&phba->ctrl, cq, dq,
2813 def_pdu_ring_sz,
2814 phba->params.defpdu_hdr_sz);
2815 if (ret) {
2816 shost_printk(KERN_ERR, phba->shost,
2817 "be_cmd_create_default_pdu_queue Failed DEFHDR\n");
2818 return ret;
2819 }
2820 phwi_ctrlr->default_pdu_hdr.id = phwi_context->be_def_hdrq.id;
2821 SE_DEBUG(DBG_LVL_8, "iscsi def pdu id is %d\n",
2822 phwi_context->be_def_hdrq.id);
2823 hwi_post_async_buffers(phba, 1);
2824 return 0;
2825 }
2826
2827 static int
2828 beiscsi_create_def_data(struct beiscsi_hba *phba,
2829 struct hwi_context_memory *phwi_context,
2830 struct hwi_controller *phwi_ctrlr,
2831 unsigned int def_pdu_ring_sz)
2832 {
2833 unsigned int idx;
2834 int ret;
2835 struct be_queue_info *dataq, *cq;
2836 struct be_dma_mem *mem;
2837 struct be_mem_descriptor *mem_descr;
2838 void *dq_vaddress;
2839
2840 idx = 0;
2841 dataq = &phwi_context->be_def_dataq;
2842 cq = &phwi_context->be_cq[0];
2843 mem = &dataq->dma_mem;
2844 mem_descr = phba->init_mem;
2845 mem_descr += HWI_MEM_ASYNC_DATA_RING;
2846 dq_vaddress = mem_descr->mem_array[idx].virtual_address;
2847 ret = be_fill_queue(dataq, mem_descr->mem_array[0].size /
2848 sizeof(struct phys_addr),
2849 sizeof(struct phys_addr), dq_vaddress);
2850 if (ret) {
2851 shost_printk(KERN_ERR, phba->shost,
2852 "be_fill_queue Failed for DEF PDU DATA\n");
2853 return ret;
2854 }
2855 mem->dma = (unsigned long)mem_descr->mem_array[idx].
2856 bus_address.u.a64.address;
2857 ret = be_cmd_create_default_pdu_queue(&phba->ctrl, cq, dataq,
2858 def_pdu_ring_sz,
2859 phba->params.defpdu_data_sz);
2860 if (ret) {
2861 shost_printk(KERN_ERR, phba->shost,
2862 "be_cmd_create_default_pdu_queue Failed"
2863 " for DEF PDU DATA\n");
2864 return ret;
2865 }
2866 phwi_ctrlr->default_pdu_data.id = phwi_context->be_def_dataq.id;
2867 SE_DEBUG(DBG_LVL_8, "iscsi def data id is %d\n",
2868 phwi_context->be_def_dataq.id);
2869 hwi_post_async_buffers(phba, 0);
2870 SE_DEBUG(DBG_LVL_8, "DEFAULT PDU DATA RING CREATED\n");
2871 return 0;
2872 }
2873
2874 static int
2875 beiscsi_post_pages(struct beiscsi_hba *phba)
2876 {
2877 struct be_mem_descriptor *mem_descr;
2878 struct mem_array *pm_arr;
2879 unsigned int page_offset, i;
2880 struct be_dma_mem sgl;
2881 int status;
2882
2883 mem_descr = phba->init_mem;
2884 mem_descr += HWI_MEM_SGE;
2885 pm_arr = mem_descr->mem_array;
2886
2887 page_offset = (sizeof(struct iscsi_sge) * phba->params.num_sge_per_io *
2888 phba->fw_config.iscsi_icd_start) / PAGE_SIZE;
2889 for (i = 0; i < mem_descr->num_elements; i++) {
2890 hwi_build_be_sgl_arr(phba, pm_arr, &sgl);
2891 status = be_cmd_iscsi_post_sgl_pages(&phba->ctrl, &sgl,
2892 page_offset,
2893 (pm_arr->size / PAGE_SIZE));
2894 page_offset += pm_arr->size / PAGE_SIZE;
2895 if (status != 0) {
2896 shost_printk(KERN_ERR, phba->shost,
2897 "post sgl failed.\n");
2898 return status;
2899 }
2900 pm_arr++;
2901 }
2902 SE_DEBUG(DBG_LVL_8, "POSTED PAGES\n");
2903 return 0;
2904 }
2905
2906 static void be_queue_free(struct beiscsi_hba *phba, struct be_queue_info *q)
2907 {
2908 struct be_dma_mem *mem = &q->dma_mem;
2909 if (mem->va)
2910 pci_free_consistent(phba->pcidev, mem->size,
2911 mem->va, mem->dma);
2912 }
2913
2914 static int be_queue_alloc(struct beiscsi_hba *phba, struct be_queue_info *q,
2915 u16 len, u16 entry_size)
2916 {
2917 struct be_dma_mem *mem = &q->dma_mem;
2918
2919 memset(q, 0, sizeof(*q));
2920 q->len = len;
2921 q->entry_size = entry_size;
2922 mem->size = len * entry_size;
2923 mem->va = pci_alloc_consistent(phba->pcidev, mem->size, &mem->dma);
2924 if (!mem->va)
2925 return -ENOMEM;
2926 memset(mem->va, 0, mem->size);
2927 return 0;
2928 }
2929
2930 static int
2931 beiscsi_create_wrb_rings(struct beiscsi_hba *phba,
2932 struct hwi_context_memory *phwi_context,
2933 struct hwi_controller *phwi_ctrlr)
2934 {
2935 unsigned int wrb_mem_index, offset, size, num_wrb_rings;
2936 u64 pa_addr_lo;
2937 unsigned int idx, num, i;
2938 struct mem_array *pwrb_arr;
2939 void *wrb_vaddr;
2940 struct be_dma_mem sgl;
2941 struct be_mem_descriptor *mem_descr;
2942 int status;
2943
2944 idx = 0;
2945 mem_descr = phba->init_mem;
2946 mem_descr += HWI_MEM_WRB;
2947 pwrb_arr = kmalloc(sizeof(*pwrb_arr) * phba->params.cxns_per_ctrl,
2948 GFP_KERNEL);
2949 if (!pwrb_arr) {
2950 shost_printk(KERN_ERR, phba->shost,
2951 "Memory alloc failed in create wrb ring.\n");
2952 return -ENOMEM;
2953 }
2954 wrb_vaddr = mem_descr->mem_array[idx].virtual_address;
2955 pa_addr_lo = mem_descr->mem_array[idx].bus_address.u.a64.address;
2956 num_wrb_rings = mem_descr->mem_array[idx].size /
2957 (phba->params.wrbs_per_cxn * sizeof(struct iscsi_wrb));
2958
2959 for (num = 0; num < phba->params.cxns_per_ctrl; num++) {
2960 if (num_wrb_rings) {
2961 pwrb_arr[num].virtual_address = wrb_vaddr;
2962 pwrb_arr[num].bus_address.u.a64.address = pa_addr_lo;
2963 pwrb_arr[num].size = phba->params.wrbs_per_cxn *
2964 sizeof(struct iscsi_wrb);
2965 wrb_vaddr += pwrb_arr[num].size;
2966 pa_addr_lo += pwrb_arr[num].size;
2967 num_wrb_rings--;
2968 } else {
2969 idx++;
2970 wrb_vaddr = mem_descr->mem_array[idx].virtual_address;
2971 pa_addr_lo = mem_descr->mem_array[idx].\
2972 bus_address.u.a64.address;
2973 num_wrb_rings = mem_descr->mem_array[idx].size /
2974 (phba->params.wrbs_per_cxn *
2975 sizeof(struct iscsi_wrb));
2976 pwrb_arr[num].virtual_address = wrb_vaddr;
2977 pwrb_arr[num].bus_address.u.a64.address\
2978 = pa_addr_lo;
2979 pwrb_arr[num].size = phba->params.wrbs_per_cxn *
2980 sizeof(struct iscsi_wrb);
2981 wrb_vaddr += pwrb_arr[num].size;
2982 pa_addr_lo += pwrb_arr[num].size;
2983 num_wrb_rings--;
2984 }
2985 }
2986 for (i = 0; i < phba->params.cxns_per_ctrl; i++) {
2987 wrb_mem_index = 0;
2988 offset = 0;
2989 size = 0;
2990
2991 hwi_build_be_sgl_by_offset(phba, &pwrb_arr[i], &sgl);
2992 status = be_cmd_wrbq_create(&phba->ctrl, &sgl,
2993 &phwi_context->be_wrbq[i]);
2994 if (status != 0) {
2995 shost_printk(KERN_ERR, phba->shost,
2996 "wrbq create failed.");
2997 kfree(pwrb_arr);
2998 return status;
2999 }
3000 phwi_ctrlr->wrb_context[i * 2].cid = phwi_context->be_wrbq[i].
3001 id;
3002 }
3003 kfree(pwrb_arr);
3004 return 0;
3005 }
3006
3007 static void free_wrb_handles(struct beiscsi_hba *phba)
3008 {
3009 unsigned int index;
3010 struct hwi_controller *phwi_ctrlr;
3011 struct hwi_wrb_context *pwrb_context;
3012
3013 phwi_ctrlr = phba->phwi_ctrlr;
3014 for (index = 0; index < phba->params.cxns_per_ctrl * 2; index += 2) {
3015 pwrb_context = &phwi_ctrlr->wrb_context[index];
3016 kfree(pwrb_context->pwrb_handle_base);
3017 kfree(pwrb_context->pwrb_handle_basestd);
3018 }
3019 }
3020
3021 static void be_mcc_queues_destroy(struct beiscsi_hba *phba)
3022 {
3023 struct be_queue_info *q;
3024 struct be_ctrl_info *ctrl = &phba->ctrl;
3025
3026 q = &phba->ctrl.mcc_obj.q;
3027 if (q->created)
3028 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_MCCQ);
3029 be_queue_free(phba, q);
3030
3031 q = &phba->ctrl.mcc_obj.cq;
3032 if (q->created)
3033 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_CQ);
3034 be_queue_free(phba, q);
3035 }
3036
3037 static void hwi_cleanup(struct beiscsi_hba *phba)
3038 {
3039 struct be_queue_info *q;
3040 struct be_ctrl_info *ctrl = &phba->ctrl;
3041 struct hwi_controller *phwi_ctrlr;
3042 struct hwi_context_memory *phwi_context;
3043 int i, eq_num;
3044
3045 phwi_ctrlr = phba->phwi_ctrlr;
3046 phwi_context = phwi_ctrlr->phwi_ctxt;
3047 for (i = 0; i < phba->params.cxns_per_ctrl; i++) {
3048 q = &phwi_context->be_wrbq[i];
3049 if (q->created)
3050 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_WRBQ);
3051 }
3052 free_wrb_handles(phba);
3053
3054 q = &phwi_context->be_def_hdrq;
3055 if (q->created)
3056 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_DPDUQ);
3057
3058 q = &phwi_context->be_def_dataq;
3059 if (q->created)
3060 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_DPDUQ);
3061
3062 beiscsi_cmd_q_destroy(ctrl, NULL, QTYPE_SGL);
3063
3064 for (i = 0; i < (phba->num_cpus); i++) {
3065 q = &phwi_context->be_cq[i];
3066 if (q->created)
3067 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_CQ);
3068 }
3069 if (phba->msix_enabled)
3070 eq_num = 1;
3071 else
3072 eq_num = 0;
3073 for (i = 0; i < (phba->num_cpus + eq_num); i++) {
3074 q = &phwi_context->be_eq[i].q;
3075 if (q->created)
3076 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_EQ);
3077 }
3078 be_mcc_queues_destroy(phba);
3079 }
3080
3081 static int be_mcc_queues_create(struct beiscsi_hba *phba,
3082 struct hwi_context_memory *phwi_context)
3083 {
3084 struct be_queue_info *q, *cq;
3085 struct be_ctrl_info *ctrl = &phba->ctrl;
3086
3087 /* Alloc MCC compl queue */
3088 cq = &phba->ctrl.mcc_obj.cq;
3089 if (be_queue_alloc(phba, cq, MCC_CQ_LEN,
3090 sizeof(struct be_mcc_compl)))
3091 goto err;
3092 /* Ask BE to create MCC compl queue; */
3093 if (phba->msix_enabled) {
3094 if (beiscsi_cmd_cq_create(ctrl, cq, &phwi_context->be_eq
3095 [phba->num_cpus].q, false, true, 0))
3096 goto mcc_cq_free;
3097 } else {
3098 if (beiscsi_cmd_cq_create(ctrl, cq, &phwi_context->be_eq[0].q,
3099 false, true, 0))
3100 goto mcc_cq_free;
3101 }
3102
3103 /* Alloc MCC queue */
3104 q = &phba->ctrl.mcc_obj.q;
3105 if (be_queue_alloc(phba, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
3106 goto mcc_cq_destroy;
3107
3108 /* Ask BE to create MCC queue */
3109 if (beiscsi_cmd_mccq_create(phba, q, cq))
3110 goto mcc_q_free;
3111
3112 return 0;
3113
3114 mcc_q_free:
3115 be_queue_free(phba, q);
3116 mcc_cq_destroy:
3117 beiscsi_cmd_q_destroy(ctrl, cq, QTYPE_CQ);
3118 mcc_cq_free:
3119 be_queue_free(phba, cq);
3120 err:
3121 return -ENOMEM;
3122 }
3123
3124 static int find_num_cpus(void)
3125 {
3126 int num_cpus = 0;
3127
3128 num_cpus = num_online_cpus();
3129 if (num_cpus >= MAX_CPUS)
3130 num_cpus = MAX_CPUS - 1;
3131
3132 SE_DEBUG(DBG_LVL_8, "num_cpus = %d\n", num_cpus);
3133 return num_cpus;
3134 }
3135
3136 static int hwi_init_port(struct beiscsi_hba *phba)
3137 {
3138 struct hwi_controller *phwi_ctrlr;
3139 struct hwi_context_memory *phwi_context;
3140 unsigned int def_pdu_ring_sz;
3141 struct be_ctrl_info *ctrl = &phba->ctrl;
3142 int status;
3143
3144 def_pdu_ring_sz =
3145 phba->params.asyncpdus_per_ctrl * sizeof(struct phys_addr);
3146 phwi_ctrlr = phba->phwi_ctrlr;
3147 phwi_context = phwi_ctrlr->phwi_ctxt;
3148 phwi_context->max_eqd = 0;
3149 phwi_context->min_eqd = 0;
3150 phwi_context->cur_eqd = 64;
3151 be_cmd_fw_initialize(&phba->ctrl);
3152
3153 status = beiscsi_create_eqs(phba, phwi_context);
3154 if (status != 0) {
3155 shost_printk(KERN_ERR, phba->shost, "EQ not created\n");
3156 goto error;
3157 }
3158
3159 status = be_mcc_queues_create(phba, phwi_context);
3160 if (status != 0)
3161 goto error;
3162
3163 status = mgmt_check_supported_fw(ctrl, phba);
3164 if (status != 0) {
3165 shost_printk(KERN_ERR, phba->shost,
3166 "Unsupported fw version\n");
3167 goto error;
3168 }
3169
3170 status = beiscsi_create_cqs(phba, phwi_context);
3171 if (status != 0) {
3172 shost_printk(KERN_ERR, phba->shost, "CQ not created\n");
3173 goto error;
3174 }
3175
3176 status = beiscsi_create_def_hdr(phba, phwi_context, phwi_ctrlr,
3177 def_pdu_ring_sz);
3178 if (status != 0) {
3179 shost_printk(KERN_ERR, phba->shost,
3180 "Default Header not created\n");
3181 goto error;
3182 }
3183
3184 status = beiscsi_create_def_data(phba, phwi_context,
3185 phwi_ctrlr, def_pdu_ring_sz);
3186 if (status != 0) {
3187 shost_printk(KERN_ERR, phba->shost,
3188 "Default Data not created\n");
3189 goto error;
3190 }
3191
3192 status = beiscsi_post_pages(phba);
3193 if (status != 0) {
3194 shost_printk(KERN_ERR, phba->shost, "Post SGL Pages Failed\n");
3195 goto error;
3196 }
3197
3198 status = beiscsi_create_wrb_rings(phba, phwi_context, phwi_ctrlr);
3199 if (status != 0) {
3200 shost_printk(KERN_ERR, phba->shost,
3201 "WRB Rings not created\n");
3202 goto error;
3203 }
3204
3205 SE_DEBUG(DBG_LVL_8, "hwi_init_port success\n");
3206 return 0;
3207
3208 error:
3209 shost_printk(KERN_ERR, phba->shost, "hwi_init_port failed");
3210 hwi_cleanup(phba);
3211 return -ENOMEM;
3212 }
3213
3214 static int hwi_init_controller(struct beiscsi_hba *phba)
3215 {
3216 struct hwi_controller *phwi_ctrlr;
3217
3218 phwi_ctrlr = phba->phwi_ctrlr;
3219 if (1 == phba->init_mem[HWI_MEM_ADDN_CONTEXT].num_elements) {
3220 phwi_ctrlr->phwi_ctxt = (struct hwi_context_memory *)phba->
3221 init_mem[HWI_MEM_ADDN_CONTEXT].mem_array[0].virtual_address;
3222 SE_DEBUG(DBG_LVL_8, " phwi_ctrlr->phwi_ctxt=%p\n",
3223 phwi_ctrlr->phwi_ctxt);
3224 } else {
3225 shost_printk(KERN_ERR, phba->shost,
3226 "HWI_MEM_ADDN_CONTEXT is more than one element."
3227 "Failing to load\n");
3228 return -ENOMEM;
3229 }
3230
3231 iscsi_init_global_templates(phba);
3232 beiscsi_init_wrb_handle(phba);
3233 hwi_init_async_pdu_ctx(phba);
3234 if (hwi_init_port(phba) != 0) {
3235 shost_printk(KERN_ERR, phba->shost,
3236 "hwi_init_controller failed\n");
3237 return -ENOMEM;
3238 }
3239 return 0;
3240 }
3241
3242 static void beiscsi_free_mem(struct beiscsi_hba *phba)
3243 {
3244 struct be_mem_descriptor *mem_descr;
3245 int i, j;
3246
3247 mem_descr = phba->init_mem;
3248 i = 0;
3249 j = 0;
3250 for (i = 0; i < SE_MEM_MAX; i++) {
3251 for (j = mem_descr->num_elements; j > 0; j--) {
3252 pci_free_consistent(phba->pcidev,
3253 mem_descr->mem_array[j - 1].size,
3254 mem_descr->mem_array[j - 1].virtual_address,
3255 (unsigned long)mem_descr->mem_array[j - 1].
3256 bus_address.u.a64.address);
3257 }
3258 kfree(mem_descr->mem_array);
3259 mem_descr++;
3260 }
3261 kfree(phba->init_mem);
3262 kfree(phba->phwi_ctrlr);
3263 }
3264
3265 static int beiscsi_init_controller(struct beiscsi_hba *phba)
3266 {
3267 int ret = -ENOMEM;
3268
3269 ret = beiscsi_get_memory(phba);
3270 if (ret < 0) {
3271 shost_printk(KERN_ERR, phba->shost, "beiscsi_dev_probe -"
3272 "Failed in beiscsi_alloc_memory\n");
3273 return ret;
3274 }
3275
3276 ret = hwi_init_controller(phba);
3277 if (ret)
3278 goto free_init;
3279 SE_DEBUG(DBG_LVL_8, "Return success from beiscsi_init_controller");
3280 return 0;
3281
3282 free_init:
3283 beiscsi_free_mem(phba);
3284 return -ENOMEM;
3285 }
3286
3287 static int beiscsi_init_sgl_handle(struct beiscsi_hba *phba)
3288 {
3289 struct be_mem_descriptor *mem_descr_sglh, *mem_descr_sg;
3290 struct sgl_handle *psgl_handle;
3291 struct iscsi_sge *pfrag;
3292 unsigned int arr_index, i, idx;
3293
3294 phba->io_sgl_hndl_avbl = 0;
3295 phba->eh_sgl_hndl_avbl = 0;
3296
3297 mem_descr_sglh = phba->init_mem;
3298 mem_descr_sglh += HWI_MEM_SGLH;
3299 if (1 == mem_descr_sglh->num_elements) {
3300 phba->io_sgl_hndl_base = kzalloc(sizeof(struct sgl_handle *) *
3301 phba->params.ios_per_ctrl,
3302 GFP_KERNEL);
3303 if (!phba->io_sgl_hndl_base) {
3304 shost_printk(KERN_ERR, phba->shost,
3305 "Mem Alloc Failed. Failing to load\n");
3306 return -ENOMEM;
3307 }
3308 phba->eh_sgl_hndl_base = kzalloc(sizeof(struct sgl_handle *) *
3309 (phba->params.icds_per_ctrl -
3310 phba->params.ios_per_ctrl),
3311 GFP_KERNEL);
3312 if (!phba->eh_sgl_hndl_base) {
3313 kfree(phba->io_sgl_hndl_base);
3314 shost_printk(KERN_ERR, phba->shost,
3315 "Mem Alloc Failed. Failing to load\n");
3316 return -ENOMEM;
3317 }
3318 } else {
3319 shost_printk(KERN_ERR, phba->shost,
3320 "HWI_MEM_SGLH is more than one element."
3321 "Failing to load\n");
3322 return -ENOMEM;
3323 }
3324
3325 arr_index = 0;
3326 idx = 0;
3327 while (idx < mem_descr_sglh->num_elements) {
3328 psgl_handle = mem_descr_sglh->mem_array[idx].virtual_address;
3329
3330 for (i = 0; i < (mem_descr_sglh->mem_array[idx].size /
3331 sizeof(struct sgl_handle)); i++) {
3332 if (arr_index < phba->params.ios_per_ctrl) {
3333 phba->io_sgl_hndl_base[arr_index] = psgl_handle;
3334 phba->io_sgl_hndl_avbl++;
3335 arr_index++;
3336 } else {
3337 phba->eh_sgl_hndl_base[arr_index -
3338 phba->params.ios_per_ctrl] =
3339 psgl_handle;
3340 arr_index++;
3341 phba->eh_sgl_hndl_avbl++;
3342 }
3343 psgl_handle++;
3344 }
3345 idx++;
3346 }
3347 SE_DEBUG(DBG_LVL_8,
3348 "phba->io_sgl_hndl_avbl=%d"
3349 "phba->eh_sgl_hndl_avbl=%d\n",
3350 phba->io_sgl_hndl_avbl,
3351 phba->eh_sgl_hndl_avbl);
3352 mem_descr_sg = phba->init_mem;
3353 mem_descr_sg += HWI_MEM_SGE;
3354 SE_DEBUG(DBG_LVL_8, "\n mem_descr_sg->num_elements=%d\n",
3355 mem_descr_sg->num_elements);
3356 arr_index = 0;
3357 idx = 0;
3358 while (idx < mem_descr_sg->num_elements) {
3359 pfrag = mem_descr_sg->mem_array[idx].virtual_address;
3360
3361 for (i = 0;
3362 i < (mem_descr_sg->mem_array[idx].size) /
3363 (sizeof(struct iscsi_sge) * phba->params.num_sge_per_io);
3364 i++) {
3365 if (arr_index < phba->params.ios_per_ctrl)
3366 psgl_handle = phba->io_sgl_hndl_base[arr_index];
3367 else
3368 psgl_handle = phba->eh_sgl_hndl_base[arr_index -
3369 phba->params.ios_per_ctrl];
3370 psgl_handle->pfrag = pfrag;
3371 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, pfrag, 0);
3372 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, pfrag, 0);
3373 pfrag += phba->params.num_sge_per_io;
3374 psgl_handle->sgl_index =
3375 phba->fw_config.iscsi_icd_start + arr_index++;
3376 }
3377 idx++;
3378 }
3379 phba->io_sgl_free_index = 0;
3380 phba->io_sgl_alloc_index = 0;
3381 phba->eh_sgl_free_index = 0;
3382 phba->eh_sgl_alloc_index = 0;
3383 return 0;
3384 }
3385
3386 static int hba_setup_cid_tbls(struct beiscsi_hba *phba)
3387 {
3388 int i, new_cid;
3389
3390 phba->cid_array = kzalloc(sizeof(void *) * phba->params.cxns_per_ctrl,
3391 GFP_KERNEL);
3392 if (!phba->cid_array) {
3393 shost_printk(KERN_ERR, phba->shost,
3394 "Failed to allocate memory in "
3395 "hba_setup_cid_tbls\n");
3396 return -ENOMEM;
3397 }
3398 phba->ep_array = kzalloc(sizeof(struct iscsi_endpoint *) *
3399 phba->params.cxns_per_ctrl * 2, GFP_KERNEL);
3400 if (!phba->ep_array) {
3401 shost_printk(KERN_ERR, phba->shost,
3402 "Failed to allocate memory in "
3403 "hba_setup_cid_tbls\n");
3404 kfree(phba->cid_array);
3405 return -ENOMEM;
3406 }
3407 new_cid = phba->fw_config.iscsi_cid_start;
3408 for (i = 0; i < phba->params.cxns_per_ctrl; i++) {
3409 phba->cid_array[i] = new_cid;
3410 new_cid += 2;
3411 }
3412 phba->avlbl_cids = phba->params.cxns_per_ctrl;
3413 return 0;
3414 }
3415
3416 static void hwi_enable_intr(struct beiscsi_hba *phba)
3417 {
3418 struct be_ctrl_info *ctrl = &phba->ctrl;
3419 struct hwi_controller *phwi_ctrlr;
3420 struct hwi_context_memory *phwi_context;
3421 struct be_queue_info *eq;
3422 u8 __iomem *addr;
3423 u32 reg, i;
3424 u32 enabled;
3425
3426 phwi_ctrlr = phba->phwi_ctrlr;
3427 phwi_context = phwi_ctrlr->phwi_ctxt;
3428
3429 addr = (u8 __iomem *) ((u8 __iomem *) ctrl->pcicfg +
3430 PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET);
3431 reg = ioread32(addr);
3432
3433 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
3434 if (!enabled) {
3435 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
3436 SE_DEBUG(DBG_LVL_8, "reg =x%08x addr=%p\n", reg, addr);
3437 iowrite32(reg, addr);
3438 }
3439
3440 if (!phba->msix_enabled) {
3441 eq = &phwi_context->be_eq[0].q;
3442 SE_DEBUG(DBG_LVL_8, "eq->id=%d\n", eq->id);
3443 hwi_ring_eq_db(phba, eq->id, 0, 0, 1, 1);
3444 } else {
3445 for (i = 0; i <= phba->num_cpus; i++) {
3446 eq = &phwi_context->be_eq[i].q;
3447 SE_DEBUG(DBG_LVL_8, "eq->id=%d\n", eq->id);
3448 hwi_ring_eq_db(phba, eq->id, 0, 0, 1, 1);
3449 }
3450 }
3451 }
3452
3453 static void hwi_disable_intr(struct beiscsi_hba *phba)
3454 {
3455 struct be_ctrl_info *ctrl = &phba->ctrl;
3456
3457 u8 __iomem *addr = ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
3458 u32 reg = ioread32(addr);
3459
3460 u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
3461 if (enabled) {
3462 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
3463 iowrite32(reg, addr);
3464 } else
3465 shost_printk(KERN_WARNING, phba->shost,
3466 "In hwi_disable_intr, Already Disabled\n");
3467 }
3468
3469 static int beiscsi_get_boot_info(struct beiscsi_hba *phba)
3470 {
3471 struct be_cmd_resp_get_boot_target *boot_resp;
3472 struct be_cmd_resp_get_session *session_resp;
3473 struct be_mcc_wrb *wrb;
3474 struct be_dma_mem nonemb_cmd;
3475 unsigned int tag, wrb_num;
3476 unsigned short status, extd_status;
3477 struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q;
3478 int ret = -ENOMEM;
3479
3480 tag = beiscsi_get_boot_target(phba);
3481 if (!tag) {
3482 SE_DEBUG(DBG_LVL_1, "be_cmd_get_mac_addr Failed\n");
3483 return -EAGAIN;
3484 } else
3485 wait_event_interruptible(phba->ctrl.mcc_wait[tag],
3486 phba->ctrl.mcc_numtag[tag]);
3487
3488 wrb_num = (phba->ctrl.mcc_numtag[tag] & 0x00FF0000) >> 16;
3489 extd_status = (phba->ctrl.mcc_numtag[tag] & 0x0000FF00) >> 8;
3490 status = phba->ctrl.mcc_numtag[tag] & 0x000000FF;
3491 if (status || extd_status) {
3492 SE_DEBUG(DBG_LVL_1, "be_cmd_get_mac_addr Failed"
3493 " status = %d extd_status = %d\n",
3494 status, extd_status);
3495 free_mcc_tag(&phba->ctrl, tag);
3496 return -EBUSY;
3497 }
3498 wrb = queue_get_wrb(mccq, wrb_num);
3499 free_mcc_tag(&phba->ctrl, tag);
3500 boot_resp = embedded_payload(wrb);
3501
3502 if (boot_resp->boot_session_handle < 0) {
3503 shost_printk(KERN_INFO, phba->shost, "No Boot Session.\n");
3504 return -ENXIO;
3505 }
3506
3507 nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev,
3508 sizeof(*session_resp),
3509 &nonemb_cmd.dma);
3510 if (nonemb_cmd.va == NULL) {
3511 SE_DEBUG(DBG_LVL_1,
3512 "Failed to allocate memory for"
3513 "beiscsi_get_session_info\n");
3514 return -ENOMEM;
3515 }
3516
3517 memset(nonemb_cmd.va, 0, sizeof(*session_resp));
3518 tag = beiscsi_get_session_info(phba,
3519 boot_resp->boot_session_handle, &nonemb_cmd);
3520 if (!tag) {
3521 SE_DEBUG(DBG_LVL_1, "beiscsi_get_session_info"
3522 " Failed\n");
3523 goto boot_freemem;
3524 } else
3525 wait_event_interruptible(phba->ctrl.mcc_wait[tag],
3526 phba->ctrl.mcc_numtag[tag]);
3527
3528 wrb_num = (phba->ctrl.mcc_numtag[tag] & 0x00FF0000) >> 16;
3529 extd_status = (phba->ctrl.mcc_numtag[tag] & 0x0000FF00) >> 8;
3530 status = phba->ctrl.mcc_numtag[tag] & 0x000000FF;
3531 if (status || extd_status) {
3532 SE_DEBUG(DBG_LVL_1, "beiscsi_get_session_info Failed"
3533 " status = %d extd_status = %d\n",
3534 status, extd_status);
3535 free_mcc_tag(&phba->ctrl, tag);
3536 goto boot_freemem;
3537 }
3538 wrb = queue_get_wrb(mccq, wrb_num);
3539 free_mcc_tag(&phba->ctrl, tag);
3540 session_resp = nonemb_cmd.va ;
3541
3542 memcpy(&phba->boot_sess, &session_resp->session_info,
3543 sizeof(struct mgmt_session_info));
3544 ret = 0;
3545
3546 boot_freemem:
3547 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
3548 nonemb_cmd.va, nonemb_cmd.dma);
3549 return ret;
3550 }
3551
3552 static void beiscsi_boot_release(void *data)
3553 {
3554 struct beiscsi_hba *phba = data;
3555
3556 scsi_host_put(phba->shost);
3557 }
3558
3559 static int beiscsi_setup_boot_info(struct beiscsi_hba *phba)
3560 {
3561 struct iscsi_boot_kobj *boot_kobj;
3562
3563 /* get boot info using mgmt cmd */
3564 if (beiscsi_get_boot_info(phba))
3565 /* Try to see if we can carry on without this */
3566 return 0;
3567
3568 phba->boot_kset = iscsi_boot_create_host_kset(phba->shost->host_no);
3569 if (!phba->boot_kset)
3570 return -ENOMEM;
3571
3572 /* get a ref because the show function will ref the phba */
3573 if (!scsi_host_get(phba->shost))
3574 goto free_kset;
3575 boot_kobj = iscsi_boot_create_target(phba->boot_kset, 0, phba,
3576 beiscsi_show_boot_tgt_info,
3577 beiscsi_tgt_get_attr_visibility,
3578 beiscsi_boot_release);
3579 if (!boot_kobj)
3580 goto put_shost;
3581
3582 if (!scsi_host_get(phba->shost))
3583 goto free_kset;
3584 boot_kobj = iscsi_boot_create_initiator(phba->boot_kset, 0, phba,
3585 beiscsi_show_boot_ini_info,
3586 beiscsi_ini_get_attr_visibility,
3587 beiscsi_boot_release);
3588 if (!boot_kobj)
3589 goto put_shost;
3590
3591 if (!scsi_host_get(phba->shost))
3592 goto free_kset;
3593 boot_kobj = iscsi_boot_create_ethernet(phba->boot_kset, 0, phba,
3594 beiscsi_show_boot_eth_info,
3595 beiscsi_eth_get_attr_visibility,
3596 beiscsi_boot_release);
3597 if (!boot_kobj)
3598 goto put_shost;
3599 return 0;
3600
3601 put_shost:
3602 scsi_host_put(phba->shost);
3603 free_kset:
3604 iscsi_boot_destroy_kset(phba->boot_kset);
3605 return -ENOMEM;
3606 }
3607
3608 static int beiscsi_init_port(struct beiscsi_hba *phba)
3609 {
3610 int ret;
3611
3612 ret = beiscsi_init_controller(phba);
3613 if (ret < 0) {
3614 shost_printk(KERN_ERR, phba->shost,
3615 "beiscsi_dev_probe - Failed in"
3616 "beiscsi_init_controller\n");
3617 return ret;
3618 }
3619 ret = beiscsi_init_sgl_handle(phba);
3620 if (ret < 0) {
3621 shost_printk(KERN_ERR, phba->shost,
3622 "beiscsi_dev_probe - Failed in"
3623 "beiscsi_init_sgl_handle\n");
3624 goto do_cleanup_ctrlr;
3625 }
3626
3627 if (hba_setup_cid_tbls(phba)) {
3628 shost_printk(KERN_ERR, phba->shost,
3629 "Failed in hba_setup_cid_tbls\n");
3630 kfree(phba->io_sgl_hndl_base);
3631 kfree(phba->eh_sgl_hndl_base);
3632 goto do_cleanup_ctrlr;
3633 }
3634
3635 return ret;
3636
3637 do_cleanup_ctrlr:
3638 hwi_cleanup(phba);
3639 return ret;
3640 }
3641
3642 static void hwi_purge_eq(struct beiscsi_hba *phba)
3643 {
3644 struct hwi_controller *phwi_ctrlr;
3645 struct hwi_context_memory *phwi_context;
3646 struct be_queue_info *eq;
3647 struct be_eq_entry *eqe = NULL;
3648 int i, eq_msix;
3649 unsigned int num_processed;
3650
3651 phwi_ctrlr = phba->phwi_ctrlr;
3652 phwi_context = phwi_ctrlr->phwi_ctxt;
3653 if (phba->msix_enabled)
3654 eq_msix = 1;
3655 else
3656 eq_msix = 0;
3657
3658 for (i = 0; i < (phba->num_cpus + eq_msix); i++) {
3659 eq = &phwi_context->be_eq[i].q;
3660 eqe = queue_tail_node(eq);
3661 num_processed = 0;
3662 while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]
3663 & EQE_VALID_MASK) {
3664 AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
3665 queue_tail_inc(eq);
3666 eqe = queue_tail_node(eq);
3667 num_processed++;
3668 }
3669
3670 if (num_processed)
3671 hwi_ring_eq_db(phba, eq->id, 1, num_processed, 1, 1);
3672 }
3673 }
3674
3675 static void beiscsi_clean_port(struct beiscsi_hba *phba)
3676 {
3677 int mgmt_status;
3678
3679 mgmt_status = mgmt_epfw_cleanup(phba, CMD_CONNECTION_CHUTE_0);
3680 if (mgmt_status)
3681 shost_printk(KERN_WARNING, phba->shost,
3682 "mgmt_epfw_cleanup FAILED\n");
3683
3684 hwi_purge_eq(phba);
3685 hwi_cleanup(phba);
3686 kfree(phba->io_sgl_hndl_base);
3687 kfree(phba->eh_sgl_hndl_base);
3688 kfree(phba->cid_array);
3689 kfree(phba->ep_array);
3690 }
3691
3692 void
3693 beiscsi_offload_connection(struct beiscsi_conn *beiscsi_conn,
3694 struct beiscsi_offload_params *params)
3695 {
3696 struct wrb_handle *pwrb_handle;
3697 struct iscsi_target_context_update_wrb *pwrb = NULL;
3698 struct be_mem_descriptor *mem_descr;
3699 struct beiscsi_hba *phba = beiscsi_conn->phba;
3700 u32 doorbell = 0;
3701
3702 /*
3703 * We can always use 0 here because it is reserved by libiscsi for
3704 * login/startup related tasks.
3705 */
3706 pwrb_handle = alloc_wrb_handle(phba, (beiscsi_conn->beiscsi_conn_cid -
3707 phba->fw_config.iscsi_cid_start));
3708 pwrb = (struct iscsi_target_context_update_wrb *)pwrb_handle->pwrb;
3709 memset(pwrb, 0, sizeof(*pwrb));
3710 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb,
3711 max_burst_length, pwrb, params->dw[offsetof
3712 (struct amap_beiscsi_offload_params,
3713 max_burst_length) / 32]);
3714 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb,
3715 max_send_data_segment_length, pwrb,
3716 params->dw[offsetof(struct amap_beiscsi_offload_params,
3717 max_send_data_segment_length) / 32]);
3718 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb,
3719 first_burst_length,
3720 pwrb,
3721 params->dw[offsetof(struct amap_beiscsi_offload_params,
3722 first_burst_length) / 32]);
3723
3724 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, erl, pwrb,
3725 (params->dw[offsetof(struct amap_beiscsi_offload_params,
3726 erl) / 32] & OFFLD_PARAMS_ERL));
3727 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, dde, pwrb,
3728 (params->dw[offsetof(struct amap_beiscsi_offload_params,
3729 dde) / 32] & OFFLD_PARAMS_DDE) >> 2);
3730 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, hde, pwrb,
3731 (params->dw[offsetof(struct amap_beiscsi_offload_params,
3732 hde) / 32] & OFFLD_PARAMS_HDE) >> 3);
3733 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, ir2t, pwrb,
3734 (params->dw[offsetof(struct amap_beiscsi_offload_params,
3735 ir2t) / 32] & OFFLD_PARAMS_IR2T) >> 4);
3736 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, imd, pwrb,
3737 (params->dw[offsetof(struct amap_beiscsi_offload_params,
3738 imd) / 32] & OFFLD_PARAMS_IMD) >> 5);
3739 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, stat_sn,
3740 pwrb,
3741 (params->dw[offsetof(struct amap_beiscsi_offload_params,
3742 exp_statsn) / 32] + 1));
3743 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, type, pwrb,
3744 0x7);
3745 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, wrb_idx,
3746 pwrb, pwrb_handle->wrb_index);
3747 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, ptr2nextwrb,
3748 pwrb, pwrb_handle->nxt_wrb_index);
3749 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb,
3750 session_state, pwrb, 0);
3751 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, compltonack,
3752 pwrb, 1);
3753 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, notpredblq,
3754 pwrb, 0);
3755 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, mode, pwrb,
3756 0);
3757
3758 mem_descr = phba->init_mem;
3759 mem_descr += ISCSI_MEM_GLOBAL_HEADER;
3760
3761 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb,
3762 pad_buffer_addr_hi, pwrb,
3763 mem_descr->mem_array[0].bus_address.u.a32.address_hi);
3764 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb,
3765 pad_buffer_addr_lo, pwrb,
3766 mem_descr->mem_array[0].bus_address.u.a32.address_lo);
3767
3768 be_dws_le_to_cpu(pwrb, sizeof(struct iscsi_target_context_update_wrb));
3769
3770 doorbell |= beiscsi_conn->beiscsi_conn_cid & DB_WRB_POST_CID_MASK;
3771 doorbell |= (pwrb_handle->wrb_index & DB_DEF_PDU_WRB_INDEX_MASK)
3772 << DB_DEF_PDU_WRB_INDEX_SHIFT;
3773 doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
3774
3775 iowrite32(doorbell, phba->db_va + DB_TXULP0_OFFSET);
3776 }
3777
3778 static void beiscsi_parse_pdu(struct iscsi_conn *conn, itt_t itt,
3779 int *index, int *age)
3780 {
3781 *index = (int)itt;
3782 if (age)
3783 *age = conn->session->age;
3784 }
3785
3786 /**
3787 * beiscsi_alloc_pdu - allocates pdu and related resources
3788 * @task: libiscsi task
3789 * @opcode: opcode of pdu for task
3790 *
3791 * This is called with the session lock held. It will allocate
3792 * the wrb and sgl if needed for the command. And it will prep
3793 * the pdu's itt. beiscsi_parse_pdu will later translate
3794 * the pdu itt to the libiscsi task itt.
3795 */
3796 static int beiscsi_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
3797 {
3798 struct beiscsi_io_task *io_task = task->dd_data;
3799 struct iscsi_conn *conn = task->conn;
3800 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
3801 struct beiscsi_hba *phba = beiscsi_conn->phba;
3802 struct hwi_wrb_context *pwrb_context;
3803 struct hwi_controller *phwi_ctrlr;
3804 itt_t itt;
3805 struct beiscsi_session *beiscsi_sess = beiscsi_conn->beiscsi_sess;
3806 dma_addr_t paddr;
3807
3808 io_task->cmd_bhs = pci_pool_alloc(beiscsi_sess->bhs_pool,
3809 GFP_ATOMIC, &paddr);
3810 if (!io_task->cmd_bhs)
3811 return -ENOMEM;
3812 io_task->bhs_pa.u.a64.address = paddr;
3813 io_task->libiscsi_itt = (itt_t)task->itt;
3814 io_task->conn = beiscsi_conn;
3815
3816 task->hdr = (struct iscsi_hdr *)&io_task->cmd_bhs->iscsi_hdr;
3817 task->hdr_max = sizeof(struct be_cmd_bhs);
3818 io_task->psgl_handle = NULL;
3819 io_task->psgl_handle = NULL;
3820
3821 if (task->sc) {
3822 spin_lock(&phba->io_sgl_lock);
3823 io_task->psgl_handle = alloc_io_sgl_handle(phba);
3824 spin_unlock(&phba->io_sgl_lock);
3825 if (!io_task->psgl_handle)
3826 goto free_hndls;
3827 io_task->pwrb_handle = alloc_wrb_handle(phba,
3828 beiscsi_conn->beiscsi_conn_cid -
3829 phba->fw_config.iscsi_cid_start);
3830 if (!io_task->pwrb_handle)
3831 goto free_io_hndls;
3832 } else {
3833 io_task->scsi_cmnd = NULL;
3834 if ((opcode & ISCSI_OPCODE_MASK) == ISCSI_OP_LOGIN) {
3835 if (!beiscsi_conn->login_in_progress) {
3836 spin_lock(&phba->mgmt_sgl_lock);
3837 io_task->psgl_handle = (struct sgl_handle *)
3838 alloc_mgmt_sgl_handle(phba);
3839 spin_unlock(&phba->mgmt_sgl_lock);
3840 if (!io_task->psgl_handle)
3841 goto free_hndls;
3842
3843 beiscsi_conn->login_in_progress = 1;
3844 beiscsi_conn->plogin_sgl_handle =
3845 io_task->psgl_handle;
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_io_hndls;
3852 beiscsi_conn->plogin_wrb_handle =
3853 io_task->pwrb_handle;
3854
3855 } else {
3856 io_task->psgl_handle =
3857 beiscsi_conn->plogin_sgl_handle;
3858 io_task->pwrb_handle =
3859 beiscsi_conn->plogin_wrb_handle;
3860 }
3861 } else {
3862 spin_lock(&phba->mgmt_sgl_lock);
3863 io_task->psgl_handle = alloc_mgmt_sgl_handle(phba);
3864 spin_unlock(&phba->mgmt_sgl_lock);
3865 if (!io_task->psgl_handle)
3866 goto free_hndls;
3867 io_task->pwrb_handle =
3868 alloc_wrb_handle(phba,
3869 beiscsi_conn->beiscsi_conn_cid -
3870 phba->fw_config.iscsi_cid_start);
3871 if (!io_task->pwrb_handle)
3872 goto free_mgmt_hndls;
3873
3874 }
3875 }
3876 itt = (itt_t) cpu_to_be32(((unsigned int)io_task->pwrb_handle->
3877 wrb_index << 16) | (unsigned int)
3878 (io_task->psgl_handle->sgl_index));
3879 io_task->pwrb_handle->pio_handle = task;
3880
3881 io_task->cmd_bhs->iscsi_hdr.itt = itt;
3882 return 0;
3883
3884 free_io_hndls:
3885 spin_lock(&phba->io_sgl_lock);
3886 free_io_sgl_handle(phba, io_task->psgl_handle);
3887 spin_unlock(&phba->io_sgl_lock);
3888 goto free_hndls;
3889 free_mgmt_hndls:
3890 spin_lock(&phba->mgmt_sgl_lock);
3891 free_mgmt_sgl_handle(phba, io_task->psgl_handle);
3892 spin_unlock(&phba->mgmt_sgl_lock);
3893 free_hndls:
3894 phwi_ctrlr = phba->phwi_ctrlr;
3895 pwrb_context = &phwi_ctrlr->wrb_context[
3896 beiscsi_conn->beiscsi_conn_cid -
3897 phba->fw_config.iscsi_cid_start];
3898 if (io_task->pwrb_handle)
3899 free_wrb_handle(phba, pwrb_context, io_task->pwrb_handle);
3900 io_task->pwrb_handle = NULL;
3901 pci_pool_free(beiscsi_sess->bhs_pool, io_task->cmd_bhs,
3902 io_task->bhs_pa.u.a64.address);
3903 SE_DEBUG(DBG_LVL_1, "Alloc of SGL_ICD Failed\n");
3904 return -ENOMEM;
3905 }
3906
3907 static void beiscsi_cleanup_task(struct iscsi_task *task)
3908 {
3909 struct beiscsi_io_task *io_task = task->dd_data;
3910 struct iscsi_conn *conn = task->conn;
3911 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
3912 struct beiscsi_hba *phba = beiscsi_conn->phba;
3913 struct beiscsi_session *beiscsi_sess = beiscsi_conn->beiscsi_sess;
3914 struct hwi_wrb_context *pwrb_context;
3915 struct hwi_controller *phwi_ctrlr;
3916
3917 phwi_ctrlr = phba->phwi_ctrlr;
3918 pwrb_context = &phwi_ctrlr->wrb_context[beiscsi_conn->beiscsi_conn_cid
3919 - phba->fw_config.iscsi_cid_start];
3920 if (io_task->pwrb_handle) {
3921 free_wrb_handle(phba, pwrb_context, io_task->pwrb_handle);
3922 io_task->pwrb_handle = NULL;
3923 }
3924
3925 if (io_task->cmd_bhs) {
3926 pci_pool_free(beiscsi_sess->bhs_pool, io_task->cmd_bhs,
3927 io_task->bhs_pa.u.a64.address);
3928 }
3929
3930 if (task->sc) {
3931 if (io_task->psgl_handle) {
3932 spin_lock(&phba->io_sgl_lock);
3933 free_io_sgl_handle(phba, io_task->psgl_handle);
3934 spin_unlock(&phba->io_sgl_lock);
3935 io_task->psgl_handle = NULL;
3936 }
3937 } else {
3938 if (task->hdr &&
3939 ((task->hdr->opcode & ISCSI_OPCODE_MASK) == ISCSI_OP_LOGIN))
3940 return;
3941 if (io_task->psgl_handle) {
3942 spin_lock(&phba->mgmt_sgl_lock);
3943 free_mgmt_sgl_handle(phba, io_task->psgl_handle);
3944 spin_unlock(&phba->mgmt_sgl_lock);
3945 io_task->psgl_handle = NULL;
3946 }
3947 }
3948 }
3949
3950 static int beiscsi_iotask(struct iscsi_task *task, struct scatterlist *sg,
3951 unsigned int num_sg, unsigned int xferlen,
3952 unsigned int writedir)
3953 {
3954
3955 struct beiscsi_io_task *io_task = task->dd_data;
3956 struct iscsi_conn *conn = task->conn;
3957 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
3958 struct beiscsi_hba *phba = beiscsi_conn->phba;
3959 struct iscsi_wrb *pwrb = NULL;
3960 unsigned int doorbell = 0;
3961
3962 pwrb = io_task->pwrb_handle->pwrb;
3963 io_task->cmd_bhs->iscsi_hdr.exp_statsn = 0;
3964 io_task->bhs_len = sizeof(struct be_cmd_bhs);
3965
3966 if (writedir) {
3967 memset(&io_task->cmd_bhs->iscsi_data_pdu, 0, 48);
3968 AMAP_SET_BITS(struct amap_pdu_data_out, itt,
3969 &io_task->cmd_bhs->iscsi_data_pdu,
3970 (unsigned int)io_task->cmd_bhs->iscsi_hdr.itt);
3971 AMAP_SET_BITS(struct amap_pdu_data_out, opcode,
3972 &io_task->cmd_bhs->iscsi_data_pdu,
3973 ISCSI_OPCODE_SCSI_DATA_OUT);
3974 AMAP_SET_BITS(struct amap_pdu_data_out, final_bit,
3975 &io_task->cmd_bhs->iscsi_data_pdu, 1);
3976 AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
3977 INI_WR_CMD);
3978 AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 1);
3979 } else {
3980 AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
3981 INI_RD_CMD);
3982 AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 0);
3983 }
3984 memcpy(&io_task->cmd_bhs->iscsi_data_pdu.
3985 dw[offsetof(struct amap_pdu_data_out, lun) / 32],
3986 &io_task->cmd_bhs->iscsi_hdr.lun, sizeof(struct scsi_lun));
3987
3988 AMAP_SET_BITS(struct amap_iscsi_wrb, lun, pwrb,
3989 cpu_to_be16(*(unsigned short *)&io_task->cmd_bhs->iscsi_hdr.lun));
3990 AMAP_SET_BITS(struct amap_iscsi_wrb, r2t_exp_dtl, pwrb, xferlen);
3991 AMAP_SET_BITS(struct amap_iscsi_wrb, wrb_idx, pwrb,
3992 io_task->pwrb_handle->wrb_index);
3993 AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb,
3994 be32_to_cpu(task->cmdsn));
3995 AMAP_SET_BITS(struct amap_iscsi_wrb, sgl_icd_idx, pwrb,
3996 io_task->psgl_handle->sgl_index);
3997
3998 hwi_write_sgl(pwrb, sg, num_sg, io_task);
3999
4000 AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb, pwrb,
4001 io_task->pwrb_handle->nxt_wrb_index);
4002 be_dws_le_to_cpu(pwrb, sizeof(struct iscsi_wrb));
4003
4004 doorbell |= beiscsi_conn->beiscsi_conn_cid & DB_WRB_POST_CID_MASK;
4005 doorbell |= (io_task->pwrb_handle->wrb_index &
4006 DB_DEF_PDU_WRB_INDEX_MASK) << DB_DEF_PDU_WRB_INDEX_SHIFT;
4007 doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
4008
4009 iowrite32(doorbell, phba->db_va + DB_TXULP0_OFFSET);
4010 return 0;
4011 }
4012
4013 static int beiscsi_mtask(struct iscsi_task *task)
4014 {
4015 struct beiscsi_io_task *io_task = task->dd_data;
4016 struct iscsi_conn *conn = task->conn;
4017 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
4018 struct beiscsi_hba *phba = beiscsi_conn->phba;
4019 struct iscsi_wrb *pwrb = NULL;
4020 unsigned int doorbell = 0;
4021 unsigned int cid;
4022
4023 cid = beiscsi_conn->beiscsi_conn_cid;
4024 pwrb = io_task->pwrb_handle->pwrb;
4025 memset(pwrb, 0, sizeof(*pwrb));
4026 AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb,
4027 be32_to_cpu(task->cmdsn));
4028 AMAP_SET_BITS(struct amap_iscsi_wrb, wrb_idx, pwrb,
4029 io_task->pwrb_handle->wrb_index);
4030 AMAP_SET_BITS(struct amap_iscsi_wrb, sgl_icd_idx, pwrb,
4031 io_task->psgl_handle->sgl_index);
4032
4033 switch (task->hdr->opcode & ISCSI_OPCODE_MASK) {
4034 case ISCSI_OP_LOGIN:
4035 AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
4036 TGT_DM_CMD);
4037 AMAP_SET_BITS(struct amap_iscsi_wrb, dmsg, pwrb, 0);
4038 AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb, 1);
4039 hwi_write_buffer(pwrb, task);
4040 break;
4041 case ISCSI_OP_NOOP_OUT:
4042 if (task->hdr->ttt != ISCSI_RESERVED_TAG) {
4043 AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
4044 TGT_DM_CMD);
4045 AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt,
4046 pwrb, 0);
4047 AMAP_SET_BITS(struct amap_iscsi_wrb, dmsg, pwrb, 0);
4048 } else {
4049 AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
4050 INI_RD_CMD);
4051 AMAP_SET_BITS(struct amap_iscsi_wrb, dmsg, pwrb, 1);
4052 }
4053 hwi_write_buffer(pwrb, task);
4054 break;
4055 case ISCSI_OP_TEXT:
4056 AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
4057 TGT_DM_CMD);
4058 AMAP_SET_BITS(struct amap_iscsi_wrb, dmsg, pwrb, 0);
4059 hwi_write_buffer(pwrb, task);
4060 break;
4061 case ISCSI_OP_SCSI_TMFUNC:
4062 AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
4063 INI_TMF_CMD);
4064 AMAP_SET_BITS(struct amap_iscsi_wrb, dmsg, pwrb, 0);
4065 hwi_write_buffer(pwrb, task);
4066 break;
4067 case ISCSI_OP_LOGOUT:
4068 AMAP_SET_BITS(struct amap_iscsi_wrb, dmsg, pwrb, 0);
4069 AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
4070 HWH_TYPE_LOGOUT);
4071 hwi_write_buffer(pwrb, task);
4072 break;
4073
4074 default:
4075 SE_DEBUG(DBG_LVL_1, "opcode =%d Not supported\n",
4076 task->hdr->opcode & ISCSI_OPCODE_MASK);
4077 return -EINVAL;
4078 }
4079
4080 AMAP_SET_BITS(struct amap_iscsi_wrb, r2t_exp_dtl, pwrb,
4081 task->data_count);
4082 AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb, pwrb,
4083 io_task->pwrb_handle->nxt_wrb_index);
4084 be_dws_le_to_cpu(pwrb, sizeof(struct iscsi_wrb));
4085
4086 doorbell |= cid & DB_WRB_POST_CID_MASK;
4087 doorbell |= (io_task->pwrb_handle->wrb_index &
4088 DB_DEF_PDU_WRB_INDEX_MASK) << DB_DEF_PDU_WRB_INDEX_SHIFT;
4089 doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
4090 iowrite32(doorbell, phba->db_va + DB_TXULP0_OFFSET);
4091 return 0;
4092 }
4093
4094 static int beiscsi_task_xmit(struct iscsi_task *task)
4095 {
4096 struct beiscsi_io_task *io_task = task->dd_data;
4097 struct scsi_cmnd *sc = task->sc;
4098 struct scatterlist *sg;
4099 int num_sg;
4100 unsigned int writedir = 0, xferlen = 0;
4101
4102 if (!sc)
4103 return beiscsi_mtask(task);
4104
4105 io_task->scsi_cmnd = sc;
4106 num_sg = scsi_dma_map(sc);
4107 if (num_sg < 0) {
4108 SE_DEBUG(DBG_LVL_1, " scsi_dma_map Failed\n")
4109 return num_sg;
4110 }
4111 xferlen = scsi_bufflen(sc);
4112 sg = scsi_sglist(sc);
4113 if (sc->sc_data_direction == DMA_TO_DEVICE) {
4114 writedir = 1;
4115 SE_DEBUG(DBG_LVL_4, "task->imm_count=0x%08x\n",
4116 task->imm_count);
4117 } else
4118 writedir = 0;
4119 return beiscsi_iotask(task, sg, num_sg, xferlen, writedir);
4120 }
4121
4122 static void beiscsi_quiesce(struct beiscsi_hba *phba)
4123 {
4124 struct hwi_controller *phwi_ctrlr;
4125 struct hwi_context_memory *phwi_context;
4126 struct be_eq_obj *pbe_eq;
4127 unsigned int i, msix_vec;
4128 u8 *real_offset = 0;
4129 u32 value = 0;
4130
4131 phwi_ctrlr = phba->phwi_ctrlr;
4132 phwi_context = phwi_ctrlr->phwi_ctxt;
4133 hwi_disable_intr(phba);
4134 if (phba->msix_enabled) {
4135 for (i = 0; i <= phba->num_cpus; i++) {
4136 msix_vec = phba->msix_entries[i].vector;
4137 free_irq(msix_vec, &phwi_context->be_eq[i]);
4138 kfree(phba->msi_name[i]);
4139 }
4140 } else
4141 if (phba->pcidev->irq)
4142 free_irq(phba->pcidev->irq, phba);
4143 pci_disable_msix(phba->pcidev);
4144 destroy_workqueue(phba->wq);
4145 if (blk_iopoll_enabled)
4146 for (i = 0; i < phba->num_cpus; i++) {
4147 pbe_eq = &phwi_context->be_eq[i];
4148 blk_iopoll_disable(&pbe_eq->iopoll);
4149 }
4150
4151 beiscsi_clean_port(phba);
4152 beiscsi_free_mem(phba);
4153 real_offset = (u8 *)phba->csr_va + MPU_EP_SEMAPHORE;
4154
4155 value = readl((void *)real_offset);
4156
4157 if (value & 0x00010000) {
4158 value &= 0xfffeffff;
4159 writel(value, (void *)real_offset);
4160 }
4161 beiscsi_unmap_pci_function(phba);
4162 pci_free_consistent(phba->pcidev,
4163 phba->ctrl.mbox_mem_alloced.size,
4164 phba->ctrl.mbox_mem_alloced.va,
4165 phba->ctrl.mbox_mem_alloced.dma);
4166 }
4167
4168 static void beiscsi_remove(struct pci_dev *pcidev)
4169 {
4170
4171 struct beiscsi_hba *phba = NULL;
4172
4173 phba = pci_get_drvdata(pcidev);
4174 if (!phba) {
4175 dev_err(&pcidev->dev, "beiscsi_remove called with no phba\n");
4176 return;
4177 }
4178
4179 beiscsi_quiesce(phba);
4180 iscsi_boot_destroy_kset(phba->boot_kset);
4181 iscsi_host_remove(phba->shost);
4182 pci_dev_put(phba->pcidev);
4183 iscsi_host_free(phba->shost);
4184 pci_disable_device(pcidev);
4185 }
4186
4187 static void beiscsi_shutdown(struct pci_dev *pcidev)
4188 {
4189
4190 struct beiscsi_hba *phba = NULL;
4191
4192 phba = (struct beiscsi_hba *)pci_get_drvdata(pcidev);
4193 if (!phba) {
4194 dev_err(&pcidev->dev, "beiscsi_shutdown called with no phba\n");
4195 return;
4196 }
4197
4198 beiscsi_quiesce(phba);
4199 pci_disable_device(pcidev);
4200 }
4201
4202 static void beiscsi_msix_enable(struct beiscsi_hba *phba)
4203 {
4204 int i, status;
4205
4206 for (i = 0; i <= phba->num_cpus; i++)
4207 phba->msix_entries[i].entry = i;
4208
4209 status = pci_enable_msix(phba->pcidev, phba->msix_entries,
4210 (phba->num_cpus + 1));
4211 if (!status)
4212 phba->msix_enabled = true;
4213
4214 return;
4215 }
4216
4217 static int __devinit beiscsi_dev_probe(struct pci_dev *pcidev,
4218 const struct pci_device_id *id)
4219 {
4220 struct beiscsi_hba *phba = NULL;
4221 struct hwi_controller *phwi_ctrlr;
4222 struct hwi_context_memory *phwi_context;
4223 struct be_eq_obj *pbe_eq;
4224 int ret, num_cpus, i;
4225 u8 *real_offset = 0;
4226 u32 value = 0;
4227
4228 ret = beiscsi_enable_pci(pcidev);
4229 if (ret < 0) {
4230 dev_err(&pcidev->dev, "beiscsi_dev_probe-"
4231 " Failed to enable pci device\n");
4232 return ret;
4233 }
4234
4235 phba = beiscsi_hba_alloc(pcidev);
4236 if (!phba) {
4237 dev_err(&pcidev->dev, "beiscsi_dev_probe-"
4238 " Failed in beiscsi_hba_alloc\n");
4239 goto disable_pci;
4240 }
4241
4242 switch (pcidev->device) {
4243 case BE_DEVICE_ID1:
4244 case OC_DEVICE_ID1:
4245 case OC_DEVICE_ID2:
4246 phba->generation = BE_GEN2;
4247 break;
4248 case BE_DEVICE_ID2:
4249 case OC_DEVICE_ID3:
4250 phba->generation = BE_GEN3;
4251 break;
4252 default:
4253 phba->generation = 0;
4254 }
4255
4256 if (enable_msix)
4257 num_cpus = find_num_cpus();
4258 else
4259 num_cpus = 1;
4260 phba->num_cpus = num_cpus;
4261 SE_DEBUG(DBG_LVL_8, "num_cpus = %d\n", phba->num_cpus);
4262
4263 if (enable_msix)
4264 beiscsi_msix_enable(phba);
4265 ret = be_ctrl_init(phba, pcidev);
4266 if (ret) {
4267 shost_printk(KERN_ERR, phba->shost, "beiscsi_dev_probe-"
4268 "Failed in be_ctrl_init\n");
4269 goto hba_free;
4270 }
4271
4272 if (!num_hba) {
4273 real_offset = (u8 *)phba->csr_va + MPU_EP_SEMAPHORE;
4274 value = readl((void *)real_offset);
4275 if (value & 0x00010000) {
4276 gcrashmode++;
4277 shost_printk(KERN_ERR, phba->shost,
4278 "Loading Driver in crashdump mode\n");
4279 ret = beiscsi_pci_soft_reset(phba);
4280 if (ret) {
4281 shost_printk(KERN_ERR, phba->shost,
4282 "Reset Failed. Aborting Crashdump\n");
4283 goto hba_free;
4284 }
4285 ret = be_chk_reset_complete(phba);
4286 if (ret) {
4287 shost_printk(KERN_ERR, phba->shost,
4288 "Failed to get out of reset."
4289 "Aborting Crashdump\n");
4290 goto hba_free;
4291 }
4292 } else {
4293 value |= 0x00010000;
4294 writel(value, (void *)real_offset);
4295 num_hba++;
4296 }
4297 }
4298
4299 spin_lock_init(&phba->io_sgl_lock);
4300 spin_lock_init(&phba->mgmt_sgl_lock);
4301 spin_lock_init(&phba->isr_lock);
4302 ret = mgmt_get_fw_config(&phba->ctrl, phba);
4303 if (ret != 0) {
4304 shost_printk(KERN_ERR, phba->shost,
4305 "Error getting fw config\n");
4306 goto free_port;
4307 }
4308 phba->shost->max_id = phba->fw_config.iscsi_cid_count;
4309 beiscsi_get_params(phba);
4310 phba->shost->can_queue = phba->params.ios_per_ctrl;
4311 ret = beiscsi_init_port(phba);
4312 if (ret < 0) {
4313 shost_printk(KERN_ERR, phba->shost, "beiscsi_dev_probe-"
4314 "Failed in beiscsi_init_port\n");
4315 goto free_port;
4316 }
4317
4318 for (i = 0; i < MAX_MCC_CMD ; i++) {
4319 init_waitqueue_head(&phba->ctrl.mcc_wait[i + 1]);
4320 phba->ctrl.mcc_tag[i] = i + 1;
4321 phba->ctrl.mcc_numtag[i + 1] = 0;
4322 phba->ctrl.mcc_tag_available++;
4323 }
4324
4325 phba->ctrl.mcc_alloc_index = phba->ctrl.mcc_free_index = 0;
4326
4327 snprintf(phba->wq_name, sizeof(phba->wq_name), "beiscsi_q_irq%u",
4328 phba->shost->host_no);
4329 phba->wq = alloc_workqueue(phba->wq_name, WQ_MEM_RECLAIM, 1);
4330 if (!phba->wq) {
4331 shost_printk(KERN_ERR, phba->shost, "beiscsi_dev_probe-"
4332 "Failed to allocate work queue\n");
4333 goto free_twq;
4334 }
4335
4336 INIT_WORK(&phba->work_cqs, beiscsi_process_all_cqs);
4337
4338 phwi_ctrlr = phba->phwi_ctrlr;
4339 phwi_context = phwi_ctrlr->phwi_ctxt;
4340 if (blk_iopoll_enabled) {
4341 for (i = 0; i < phba->num_cpus; i++) {
4342 pbe_eq = &phwi_context->be_eq[i];
4343 blk_iopoll_init(&pbe_eq->iopoll, be_iopoll_budget,
4344 be_iopoll);
4345 blk_iopoll_enable(&pbe_eq->iopoll);
4346 }
4347 }
4348 ret = beiscsi_init_irqs(phba);
4349 if (ret < 0) {
4350 shost_printk(KERN_ERR, phba->shost, "beiscsi_dev_probe-"
4351 "Failed to beiscsi_init_irqs\n");
4352 goto free_blkenbld;
4353 }
4354 hwi_enable_intr(phba);
4355
4356 if (beiscsi_setup_boot_info(phba))
4357 /*
4358 * log error but continue, because we may not be using
4359 * iscsi boot.
4360 */
4361 shost_printk(KERN_ERR, phba->shost, "Could not set up "
4362 "iSCSI boot info.");
4363
4364 SE_DEBUG(DBG_LVL_8, "\n\n\n SUCCESS - DRIVER LOADED\n\n\n");
4365 return 0;
4366
4367 free_blkenbld:
4368 destroy_workqueue(phba->wq);
4369 if (blk_iopoll_enabled)
4370 for (i = 0; i < phba->num_cpus; i++) {
4371 pbe_eq = &phwi_context->be_eq[i];
4372 blk_iopoll_disable(&pbe_eq->iopoll);
4373 }
4374 free_twq:
4375 beiscsi_clean_port(phba);
4376 beiscsi_free_mem(phba);
4377 free_port:
4378 real_offset = (u8 *)phba->csr_va + MPU_EP_SEMAPHORE;
4379
4380 value = readl((void *)real_offset);
4381
4382 if (value & 0x00010000) {
4383 value &= 0xfffeffff;
4384 writel(value, (void *)real_offset);
4385 }
4386
4387 pci_free_consistent(phba->pcidev,
4388 phba->ctrl.mbox_mem_alloced.size,
4389 phba->ctrl.mbox_mem_alloced.va,
4390 phba->ctrl.mbox_mem_alloced.dma);
4391 beiscsi_unmap_pci_function(phba);
4392 hba_free:
4393 if (phba->msix_enabled)
4394 pci_disable_msix(phba->pcidev);
4395 iscsi_host_remove(phba->shost);
4396 pci_dev_put(phba->pcidev);
4397 iscsi_host_free(phba->shost);
4398 disable_pci:
4399 pci_disable_device(pcidev);
4400 return ret;
4401 }
4402
4403 struct iscsi_transport beiscsi_iscsi_transport = {
4404 .owner = THIS_MODULE,
4405 .name = DRV_NAME,
4406 .caps = CAP_RECOVERY_L0 | CAP_HDRDGST | CAP_TEXT_NEGO |
4407 CAP_MULTI_R2T | CAP_DATADGST | CAP_DATA_PATH_OFFLOAD,
4408 .create_session = beiscsi_session_create,
4409 .destroy_session = beiscsi_session_destroy,
4410 .create_conn = beiscsi_conn_create,
4411 .bind_conn = beiscsi_conn_bind,
4412 .destroy_conn = iscsi_conn_teardown,
4413 .attr_is_visible = be2iscsi_attr_is_visible,
4414 .set_param = beiscsi_set_param,
4415 .get_conn_param = iscsi_conn_get_param,
4416 .get_session_param = iscsi_session_get_param,
4417 .get_host_param = beiscsi_get_host_param,
4418 .start_conn = beiscsi_conn_start,
4419 .stop_conn = iscsi_conn_stop,
4420 .send_pdu = iscsi_conn_send_pdu,
4421 .xmit_task = beiscsi_task_xmit,
4422 .cleanup_task = beiscsi_cleanup_task,
4423 .alloc_pdu = beiscsi_alloc_pdu,
4424 .parse_pdu_itt = beiscsi_parse_pdu,
4425 .get_stats = beiscsi_conn_get_stats,
4426 .get_ep_param = beiscsi_ep_get_param,
4427 .ep_connect = beiscsi_ep_connect,
4428 .ep_poll = beiscsi_ep_poll,
4429 .ep_disconnect = beiscsi_ep_disconnect,
4430 .session_recovery_timedout = iscsi_session_recovery_timedout,
4431 };
4432
4433 static struct pci_driver beiscsi_pci_driver = {
4434 .name = DRV_NAME,
4435 .probe = beiscsi_dev_probe,
4436 .remove = beiscsi_remove,
4437 .shutdown = beiscsi_shutdown,
4438 .id_table = beiscsi_pci_id_table
4439 };
4440
4441
4442 static int __init beiscsi_module_init(void)
4443 {
4444 int ret;
4445
4446 beiscsi_scsi_transport =
4447 iscsi_register_transport(&beiscsi_iscsi_transport);
4448 if (!beiscsi_scsi_transport) {
4449 SE_DEBUG(DBG_LVL_1,
4450 "beiscsi_module_init - Unable to register beiscsi"
4451 "transport.\n");
4452 return -ENOMEM;
4453 }
4454 SE_DEBUG(DBG_LVL_8, "In beiscsi_module_init, tt=%p\n",
4455 &beiscsi_iscsi_transport);
4456
4457 ret = pci_register_driver(&beiscsi_pci_driver);
4458 if (ret) {
4459 SE_DEBUG(DBG_LVL_1,
4460 "beiscsi_module_init - Unable to register"
4461 "beiscsi pci driver.\n");
4462 goto unregister_iscsi_transport;
4463 }
4464 return 0;
4465
4466 unregister_iscsi_transport:
4467 iscsi_unregister_transport(&beiscsi_iscsi_transport);
4468 return ret;
4469 }
4470
4471 static void __exit beiscsi_module_exit(void)
4472 {
4473 pci_unregister_driver(&beiscsi_pci_driver);
4474 iscsi_unregister_transport(&beiscsi_iscsi_transport);
4475 }
4476
4477 module_init(beiscsi_module_init);
4478 module_exit(beiscsi_module_exit);
linux-next