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[mirror_ubuntu-bionic-kernel.git] / drivers / scsi / be2iscsi / be_main.c
1 /*
2 * Copyright 2017 Broadcom. All Rights Reserved.
3 * The term "Broadcom" refers to Broadcom Limited and/or its subsidiaries.
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 * Contact Information:
11 * linux-drivers@broadcom.com
12 *
13 */
14
15 #include <linux/reboot.h>
16 #include <linux/delay.h>
17 #include <linux/slab.h>
18 #include <linux/interrupt.h>
19 #include <linux/blkdev.h>
20 #include <linux/pci.h>
21 #include <linux/string.h>
22 #include <linux/kernel.h>
23 #include <linux/semaphore.h>
24 #include <linux/iscsi_boot_sysfs.h>
25 #include <linux/module.h>
26 #include <linux/bsg-lib.h>
27 #include <linux/irq_poll.h>
28
29 #include <scsi/libiscsi.h>
30 #include <scsi/scsi_bsg_iscsi.h>
31 #include <scsi/scsi_netlink.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 #include "be_cmds.h"
42
43 static unsigned int be_iopoll_budget = 10;
44 static unsigned int be_max_phys_size = 64;
45 static unsigned int enable_msix = 1;
46
47 MODULE_DESCRIPTION(DRV_DESC " " BUILD_STR);
48 MODULE_VERSION(BUILD_STR);
49 MODULE_AUTHOR("Emulex Corporation");
50 MODULE_LICENSE("GPL");
51 module_param(be_iopoll_budget, int, 0);
52 module_param(enable_msix, int, 0);
53 module_param(be_max_phys_size, uint, S_IRUGO);
54 MODULE_PARM_DESC(be_max_phys_size,
55 "Maximum Size (In Kilobytes) of physically contiguous "
56 "memory that can be allocated. Range is 16 - 128");
57
58 #define beiscsi_disp_param(_name)\
59 static ssize_t \
60 beiscsi_##_name##_disp(struct device *dev,\
61 struct device_attribute *attrib, char *buf) \
62 { \
63 struct Scsi_Host *shost = class_to_shost(dev);\
64 struct beiscsi_hba *phba = iscsi_host_priv(shost); \
65 return snprintf(buf, PAGE_SIZE, "%d\n",\
66 phba->attr_##_name);\
67 }
68
69 #define beiscsi_change_param(_name, _minval, _maxval, _defaval)\
70 static int \
71 beiscsi_##_name##_change(struct beiscsi_hba *phba, uint32_t val)\
72 {\
73 if (val >= _minval && val <= _maxval) {\
74 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,\
75 "BA_%d : beiscsi_"#_name" updated "\
76 "from 0x%x ==> 0x%x\n",\
77 phba->attr_##_name, val); \
78 phba->attr_##_name = val;\
79 return 0;\
80 } \
81 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, \
82 "BA_%d beiscsi_"#_name" attribute "\
83 "cannot be updated to 0x%x, "\
84 "range allowed is ["#_minval" - "#_maxval"]\n", val);\
85 return -EINVAL;\
86 }
87
88 #define beiscsi_store_param(_name) \
89 static ssize_t \
90 beiscsi_##_name##_store(struct device *dev,\
91 struct device_attribute *attr, const char *buf,\
92 size_t count) \
93 { \
94 struct Scsi_Host *shost = class_to_shost(dev);\
95 struct beiscsi_hba *phba = iscsi_host_priv(shost);\
96 uint32_t param_val = 0;\
97 if (!isdigit(buf[0]))\
98 return -EINVAL;\
99 if (sscanf(buf, "%i", &param_val) != 1)\
100 return -EINVAL;\
101 if (beiscsi_##_name##_change(phba, param_val) == 0) \
102 return strlen(buf);\
103 else \
104 return -EINVAL;\
105 }
106
107 #define beiscsi_init_param(_name, _minval, _maxval, _defval) \
108 static int \
109 beiscsi_##_name##_init(struct beiscsi_hba *phba, uint32_t val) \
110 { \
111 if (val >= _minval && val <= _maxval) {\
112 phba->attr_##_name = val;\
113 return 0;\
114 } \
115 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,\
116 "BA_%d beiscsi_"#_name" attribute " \
117 "cannot be updated to 0x%x, "\
118 "range allowed is ["#_minval" - "#_maxval"]\n", val);\
119 phba->attr_##_name = _defval;\
120 return -EINVAL;\
121 }
122
123 #define BEISCSI_RW_ATTR(_name, _minval, _maxval, _defval, _descp) \
124 static uint beiscsi_##_name = _defval;\
125 module_param(beiscsi_##_name, uint, S_IRUGO);\
126 MODULE_PARM_DESC(beiscsi_##_name, _descp);\
127 beiscsi_disp_param(_name)\
128 beiscsi_change_param(_name, _minval, _maxval, _defval)\
129 beiscsi_store_param(_name)\
130 beiscsi_init_param(_name, _minval, _maxval, _defval)\
131 DEVICE_ATTR(beiscsi_##_name, S_IRUGO | S_IWUSR,\
132 beiscsi_##_name##_disp, beiscsi_##_name##_store)
133
134 /*
135 * When new log level added update the
136 * the MAX allowed value for log_enable
137 */
138 BEISCSI_RW_ATTR(log_enable, 0x00,
139 0xFF, 0x00, "Enable logging Bit Mask\n"
140 "\t\t\t\tInitialization Events : 0x01\n"
141 "\t\t\t\tMailbox Events : 0x02\n"
142 "\t\t\t\tMiscellaneous Events : 0x04\n"
143 "\t\t\t\tError Handling : 0x08\n"
144 "\t\t\t\tIO Path Events : 0x10\n"
145 "\t\t\t\tConfiguration Path : 0x20\n"
146 "\t\t\t\tiSCSI Protocol : 0x40\n");
147
148 DEVICE_ATTR(beiscsi_drvr_ver, S_IRUGO, beiscsi_drvr_ver_disp, NULL);
149 DEVICE_ATTR(beiscsi_adapter_family, S_IRUGO, beiscsi_adap_family_disp, NULL);
150 DEVICE_ATTR(beiscsi_fw_ver, S_IRUGO, beiscsi_fw_ver_disp, NULL);
151 DEVICE_ATTR(beiscsi_phys_port, S_IRUGO, beiscsi_phys_port_disp, NULL);
152 DEVICE_ATTR(beiscsi_active_session_count, S_IRUGO,
153 beiscsi_active_session_disp, NULL);
154 DEVICE_ATTR(beiscsi_free_session_count, S_IRUGO,
155 beiscsi_free_session_disp, NULL);
156 struct device_attribute *beiscsi_attrs[] = {
157 &dev_attr_beiscsi_log_enable,
158 &dev_attr_beiscsi_drvr_ver,
159 &dev_attr_beiscsi_adapter_family,
160 &dev_attr_beiscsi_fw_ver,
161 &dev_attr_beiscsi_active_session_count,
162 &dev_attr_beiscsi_free_session_count,
163 &dev_attr_beiscsi_phys_port,
164 NULL,
165 };
166
167 static char const *cqe_desc[] = {
168 "RESERVED_DESC",
169 "SOL_CMD_COMPLETE",
170 "SOL_CMD_KILLED_DATA_DIGEST_ERR",
171 "CXN_KILLED_PDU_SIZE_EXCEEDS_DSL",
172 "CXN_KILLED_BURST_LEN_MISMATCH",
173 "CXN_KILLED_AHS_RCVD",
174 "CXN_KILLED_HDR_DIGEST_ERR",
175 "CXN_KILLED_UNKNOWN_HDR",
176 "CXN_KILLED_STALE_ITT_TTT_RCVD",
177 "CXN_KILLED_INVALID_ITT_TTT_RCVD",
178 "CXN_KILLED_RST_RCVD",
179 "CXN_KILLED_TIMED_OUT",
180 "CXN_KILLED_RST_SENT",
181 "CXN_KILLED_FIN_RCVD",
182 "CXN_KILLED_BAD_UNSOL_PDU_RCVD",
183 "CXN_KILLED_BAD_WRB_INDEX_ERROR",
184 "CXN_KILLED_OVER_RUN_RESIDUAL",
185 "CXN_KILLED_UNDER_RUN_RESIDUAL",
186 "CMD_KILLED_INVALID_STATSN_RCVD",
187 "CMD_KILLED_INVALID_R2T_RCVD",
188 "CMD_CXN_KILLED_LUN_INVALID",
189 "CMD_CXN_KILLED_ICD_INVALID",
190 "CMD_CXN_KILLED_ITT_INVALID",
191 "CMD_CXN_KILLED_SEQ_OUTOFORDER",
192 "CMD_CXN_KILLED_INVALID_DATASN_RCVD",
193 "CXN_INVALIDATE_NOTIFY",
194 "CXN_INVALIDATE_INDEX_NOTIFY",
195 "CMD_INVALIDATED_NOTIFY",
196 "UNSOL_HDR_NOTIFY",
197 "UNSOL_DATA_NOTIFY",
198 "UNSOL_DATA_DIGEST_ERROR_NOTIFY",
199 "DRIVERMSG_NOTIFY",
200 "CXN_KILLED_CMND_DATA_NOT_ON_SAME_CONN",
201 "SOL_CMD_KILLED_DIF_ERR",
202 "CXN_KILLED_SYN_RCVD",
203 "CXN_KILLED_IMM_DATA_RCVD"
204 };
205
206 static int beiscsi_slave_configure(struct scsi_device *sdev)
207 {
208 blk_queue_max_segment_size(sdev->request_queue, 65536);
209 return 0;
210 }
211
212 static int beiscsi_eh_abort(struct scsi_cmnd *sc)
213 {
214 struct iscsi_task *abrt_task = (struct iscsi_task *)sc->SCp.ptr;
215 struct iscsi_cls_session *cls_session;
216 struct beiscsi_io_task *abrt_io_task;
217 struct beiscsi_conn *beiscsi_conn;
218 struct iscsi_session *session;
219 struct invldt_cmd_tbl inv_tbl;
220 struct beiscsi_hba *phba;
221 struct iscsi_conn *conn;
222 int rc;
223
224 cls_session = starget_to_session(scsi_target(sc->device));
225 session = cls_session->dd_data;
226
227 /* check if we raced, task just got cleaned up under us */
228 spin_lock_bh(&session->back_lock);
229 if (!abrt_task || !abrt_task->sc) {
230 spin_unlock_bh(&session->back_lock);
231 return SUCCESS;
232 }
233 /* get a task ref till FW processes the req for the ICD used */
234 __iscsi_get_task(abrt_task);
235 abrt_io_task = abrt_task->dd_data;
236 conn = abrt_task->conn;
237 beiscsi_conn = conn->dd_data;
238 phba = beiscsi_conn->phba;
239 /* mark WRB invalid which have been not processed by FW yet */
240 if (is_chip_be2_be3r(phba)) {
241 AMAP_SET_BITS(struct amap_iscsi_wrb, invld,
242 abrt_io_task->pwrb_handle->pwrb, 1);
243 } else {
244 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, invld,
245 abrt_io_task->pwrb_handle->pwrb, 1);
246 }
247 inv_tbl.cid = beiscsi_conn->beiscsi_conn_cid;
248 inv_tbl.icd = abrt_io_task->psgl_handle->sgl_index;
249 spin_unlock_bh(&session->back_lock);
250
251 rc = beiscsi_mgmt_invalidate_icds(phba, &inv_tbl, 1);
252 iscsi_put_task(abrt_task);
253 if (rc) {
254 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_EH,
255 "BM_%d : sc %p invalidation failed %d\n",
256 sc, rc);
257 return FAILED;
258 }
259
260 return iscsi_eh_abort(sc);
261 }
262
263 static int beiscsi_eh_device_reset(struct scsi_cmnd *sc)
264 {
265 struct beiscsi_invldt_cmd_tbl {
266 struct invldt_cmd_tbl tbl[BE_INVLDT_CMD_TBL_SZ];
267 struct iscsi_task *task[BE_INVLDT_CMD_TBL_SZ];
268 } *inv_tbl;
269 struct iscsi_cls_session *cls_session;
270 struct beiscsi_conn *beiscsi_conn;
271 struct beiscsi_io_task *io_task;
272 struct iscsi_session *session;
273 struct beiscsi_hba *phba;
274 struct iscsi_conn *conn;
275 struct iscsi_task *task;
276 unsigned int i, nents;
277 int rc, more = 0;
278
279 cls_session = starget_to_session(scsi_target(sc->device));
280 session = cls_session->dd_data;
281
282 spin_lock_bh(&session->frwd_lock);
283 if (!session->leadconn || session->state != ISCSI_STATE_LOGGED_IN) {
284 spin_unlock_bh(&session->frwd_lock);
285 return FAILED;
286 }
287
288 conn = session->leadconn;
289 beiscsi_conn = conn->dd_data;
290 phba = beiscsi_conn->phba;
291
292 inv_tbl = kzalloc(sizeof(*inv_tbl), GFP_ATOMIC);
293 if (!inv_tbl) {
294 spin_unlock_bh(&session->frwd_lock);
295 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_EH,
296 "BM_%d : invldt_cmd_tbl alloc failed\n");
297 return FAILED;
298 }
299 nents = 0;
300 /* take back_lock to prevent task from getting cleaned up under us */
301 spin_lock(&session->back_lock);
302 for (i = 0; i < conn->session->cmds_max; i++) {
303 task = conn->session->cmds[i];
304 if (!task->sc)
305 continue;
306
307 if (sc->device->lun != task->sc->device->lun)
308 continue;
309 /**
310 * Can't fit in more cmds? Normally this won't happen b'coz
311 * BEISCSI_CMD_PER_LUN is same as BE_INVLDT_CMD_TBL_SZ.
312 */
313 if (nents == BE_INVLDT_CMD_TBL_SZ) {
314 more = 1;
315 break;
316 }
317
318 /* get a task ref till FW processes the req for the ICD used */
319 __iscsi_get_task(task);
320 io_task = task->dd_data;
321 /* mark WRB invalid which have been not processed by FW yet */
322 if (is_chip_be2_be3r(phba)) {
323 AMAP_SET_BITS(struct amap_iscsi_wrb, invld,
324 io_task->pwrb_handle->pwrb, 1);
325 } else {
326 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, invld,
327 io_task->pwrb_handle->pwrb, 1);
328 }
329
330 inv_tbl->tbl[nents].cid = beiscsi_conn->beiscsi_conn_cid;
331 inv_tbl->tbl[nents].icd = io_task->psgl_handle->sgl_index;
332 inv_tbl->task[nents] = task;
333 nents++;
334 }
335 spin_unlock(&session->back_lock);
336 spin_unlock_bh(&session->frwd_lock);
337
338 rc = SUCCESS;
339 if (!nents)
340 goto end_reset;
341
342 if (more) {
343 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_EH,
344 "BM_%d : number of cmds exceeds size of invalidation table\n");
345 rc = FAILED;
346 goto end_reset;
347 }
348
349 if (beiscsi_mgmt_invalidate_icds(phba, &inv_tbl->tbl[0], nents)) {
350 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_EH,
351 "BM_%d : cid %u scmds invalidation failed\n",
352 beiscsi_conn->beiscsi_conn_cid);
353 rc = FAILED;
354 }
355
356 end_reset:
357 for (i = 0; i < nents; i++)
358 iscsi_put_task(inv_tbl->task[i]);
359 kfree(inv_tbl);
360
361 if (rc == SUCCESS)
362 rc = iscsi_eh_device_reset(sc);
363 return rc;
364 }
365
366 /*------------------- PCI Driver operations and data ----------------- */
367 static const struct pci_device_id beiscsi_pci_id_table[] = {
368 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
369 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID2) },
370 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
371 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
372 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID3) },
373 { PCI_DEVICE(ELX_VENDOR_ID, OC_SKH_ID1) },
374 { 0 }
375 };
376 MODULE_DEVICE_TABLE(pci, beiscsi_pci_id_table);
377
378
379 static struct scsi_host_template beiscsi_sht = {
380 .module = THIS_MODULE,
381 .name = "Emulex 10Gbe open-iscsi Initiator Driver",
382 .proc_name = DRV_NAME,
383 .queuecommand = iscsi_queuecommand,
384 .change_queue_depth = scsi_change_queue_depth,
385 .slave_configure = beiscsi_slave_configure,
386 .target_alloc = iscsi_target_alloc,
387 .eh_timed_out = iscsi_eh_cmd_timed_out,
388 .eh_abort_handler = beiscsi_eh_abort,
389 .eh_device_reset_handler = beiscsi_eh_device_reset,
390 .eh_target_reset_handler = iscsi_eh_session_reset,
391 .shost_attrs = beiscsi_attrs,
392 .sg_tablesize = BEISCSI_SGLIST_ELEMENTS,
393 .can_queue = BE2_IO_DEPTH,
394 .this_id = -1,
395 .max_sectors = BEISCSI_MAX_SECTORS,
396 .cmd_per_lun = BEISCSI_CMD_PER_LUN,
397 .use_clustering = ENABLE_CLUSTERING,
398 .vendor_id = SCSI_NL_VID_TYPE_PCI | BE_VENDOR_ID,
399 .track_queue_depth = 1,
400 };
401
402 static struct scsi_transport_template *beiscsi_scsi_transport;
403
404 static struct beiscsi_hba *beiscsi_hba_alloc(struct pci_dev *pcidev)
405 {
406 struct beiscsi_hba *phba;
407 struct Scsi_Host *shost;
408
409 shost = iscsi_host_alloc(&beiscsi_sht, sizeof(*phba), 0);
410 if (!shost) {
411 dev_err(&pcidev->dev,
412 "beiscsi_hba_alloc - iscsi_host_alloc failed\n");
413 return NULL;
414 }
415 shost->max_id = BE2_MAX_SESSIONS;
416 shost->max_channel = 0;
417 shost->max_cmd_len = BEISCSI_MAX_CMD_LEN;
418 shost->max_lun = BEISCSI_NUM_MAX_LUN;
419 shost->transportt = beiscsi_scsi_transport;
420 phba = iscsi_host_priv(shost);
421 memset(phba, 0, sizeof(*phba));
422 phba->shost = shost;
423 phba->pcidev = pci_dev_get(pcidev);
424 pci_set_drvdata(pcidev, phba);
425 phba->interface_handle = 0xFFFFFFFF;
426
427 return phba;
428 }
429
430 static void beiscsi_unmap_pci_function(struct beiscsi_hba *phba)
431 {
432 if (phba->csr_va) {
433 iounmap(phba->csr_va);
434 phba->csr_va = NULL;
435 }
436 if (phba->db_va) {
437 iounmap(phba->db_va);
438 phba->db_va = NULL;
439 }
440 if (phba->pci_va) {
441 iounmap(phba->pci_va);
442 phba->pci_va = NULL;
443 }
444 }
445
446 static int beiscsi_map_pci_bars(struct beiscsi_hba *phba,
447 struct pci_dev *pcidev)
448 {
449 u8 __iomem *addr;
450 int pcicfg_reg;
451
452 addr = ioremap_nocache(pci_resource_start(pcidev, 2),
453 pci_resource_len(pcidev, 2));
454 if (addr == NULL)
455 return -ENOMEM;
456 phba->ctrl.csr = addr;
457 phba->csr_va = addr;
458
459 addr = ioremap_nocache(pci_resource_start(pcidev, 4), 128 * 1024);
460 if (addr == NULL)
461 goto pci_map_err;
462 phba->ctrl.db = addr;
463 phba->db_va = addr;
464
465 if (phba->generation == BE_GEN2)
466 pcicfg_reg = 1;
467 else
468 pcicfg_reg = 0;
469
470 addr = ioremap_nocache(pci_resource_start(pcidev, pcicfg_reg),
471 pci_resource_len(pcidev, pcicfg_reg));
472
473 if (addr == NULL)
474 goto pci_map_err;
475 phba->ctrl.pcicfg = addr;
476 phba->pci_va = addr;
477 return 0;
478
479 pci_map_err:
480 beiscsi_unmap_pci_function(phba);
481 return -ENOMEM;
482 }
483
484 static int beiscsi_enable_pci(struct pci_dev *pcidev)
485 {
486 int ret;
487
488 ret = pci_enable_device(pcidev);
489 if (ret) {
490 dev_err(&pcidev->dev,
491 "beiscsi_enable_pci - enable device failed\n");
492 return ret;
493 }
494
495 ret = pci_request_regions(pcidev, DRV_NAME);
496 if (ret) {
497 dev_err(&pcidev->dev,
498 "beiscsi_enable_pci - request region failed\n");
499 goto pci_dev_disable;
500 }
501
502 pci_set_master(pcidev);
503 ret = pci_set_dma_mask(pcidev, DMA_BIT_MASK(64));
504 if (ret) {
505 ret = pci_set_dma_mask(pcidev, DMA_BIT_MASK(32));
506 if (ret) {
507 dev_err(&pcidev->dev, "Could not set PCI DMA Mask\n");
508 goto pci_region_release;
509 } else {
510 ret = pci_set_consistent_dma_mask(pcidev,
511 DMA_BIT_MASK(32));
512 }
513 } else {
514 ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(64));
515 if (ret) {
516 dev_err(&pcidev->dev, "Could not set PCI DMA Mask\n");
517 goto pci_region_release;
518 }
519 }
520 return 0;
521
522 pci_region_release:
523 pci_release_regions(pcidev);
524 pci_dev_disable:
525 pci_disable_device(pcidev);
526
527 return ret;
528 }
529
530 static int be_ctrl_init(struct beiscsi_hba *phba, struct pci_dev *pdev)
531 {
532 struct be_ctrl_info *ctrl = &phba->ctrl;
533 struct be_dma_mem *mbox_mem_alloc = &ctrl->mbox_mem_alloced;
534 struct be_dma_mem *mbox_mem_align = &ctrl->mbox_mem;
535 int status = 0;
536
537 ctrl->pdev = pdev;
538 status = beiscsi_map_pci_bars(phba, pdev);
539 if (status)
540 return status;
541 mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
542 mbox_mem_alloc->va = pci_alloc_consistent(pdev,
543 mbox_mem_alloc->size,
544 &mbox_mem_alloc->dma);
545 if (!mbox_mem_alloc->va) {
546 beiscsi_unmap_pci_function(phba);
547 return -ENOMEM;
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 mutex_init(&ctrl->mbox_lock);
555 spin_lock_init(&phba->ctrl.mcc_lock);
556
557 return status;
558 }
559
560 /**
561 * beiscsi_get_params()- Set the config paramters
562 * @phba: ptr device priv structure
563 **/
564 static void beiscsi_get_params(struct beiscsi_hba *phba)
565 {
566 uint32_t total_cid_count = 0;
567 uint32_t total_icd_count = 0;
568 uint8_t ulp_num = 0;
569
570 total_cid_count = BEISCSI_GET_CID_COUNT(phba, BEISCSI_ULP0) +
571 BEISCSI_GET_CID_COUNT(phba, BEISCSI_ULP1);
572
573 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
574 uint32_t align_mask = 0;
575 uint32_t icd_post_per_page = 0;
576 uint32_t icd_count_unavailable = 0;
577 uint32_t icd_start = 0, icd_count = 0;
578 uint32_t icd_start_align = 0, icd_count_align = 0;
579
580 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
581 icd_start = phba->fw_config.iscsi_icd_start[ulp_num];
582 icd_count = phba->fw_config.iscsi_icd_count[ulp_num];
583
584 /* Get ICD count that can be posted on each page */
585 icd_post_per_page = (PAGE_SIZE / (BE2_SGE *
586 sizeof(struct iscsi_sge)));
587 align_mask = (icd_post_per_page - 1);
588
589 /* Check if icd_start is aligned ICD per page posting */
590 if (icd_start % icd_post_per_page) {
591 icd_start_align = ((icd_start +
592 icd_post_per_page) &
593 ~(align_mask));
594 phba->fw_config.
595 iscsi_icd_start[ulp_num] =
596 icd_start_align;
597 }
598
599 icd_count_align = (icd_count & ~align_mask);
600
601 /* ICD discarded in the process of alignment */
602 if (icd_start_align)
603 icd_count_unavailable = ((icd_start_align -
604 icd_start) +
605 (icd_count -
606 icd_count_align));
607
608 /* Updated ICD count available */
609 phba->fw_config.iscsi_icd_count[ulp_num] = (icd_count -
610 icd_count_unavailable);
611
612 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
613 "BM_%d : Aligned ICD values\n"
614 "\t ICD Start : %d\n"
615 "\t ICD Count : %d\n"
616 "\t ICD Discarded : %d\n",
617 phba->fw_config.
618 iscsi_icd_start[ulp_num],
619 phba->fw_config.
620 iscsi_icd_count[ulp_num],
621 icd_count_unavailable);
622 break;
623 }
624 }
625
626 total_icd_count = phba->fw_config.iscsi_icd_count[ulp_num];
627 phba->params.ios_per_ctrl = (total_icd_count -
628 (total_cid_count +
629 BE2_TMFS + BE2_NOPOUT_REQ));
630 phba->params.cxns_per_ctrl = total_cid_count;
631 phba->params.icds_per_ctrl = total_icd_count;
632 phba->params.num_sge_per_io = BE2_SGE;
633 phba->params.defpdu_hdr_sz = BE2_DEFPDU_HDR_SZ;
634 phba->params.defpdu_data_sz = BE2_DEFPDU_DATA_SZ;
635 phba->params.num_eq_entries = 1024;
636 phba->params.num_cq_entries = 1024;
637 phba->params.wrbs_per_cxn = 256;
638 }
639
640 static void hwi_ring_eq_db(struct beiscsi_hba *phba,
641 unsigned int id, unsigned int clr_interrupt,
642 unsigned int num_processed,
643 unsigned char rearm, unsigned char event)
644 {
645 u32 val = 0;
646
647 if (rearm)
648 val |= 1 << DB_EQ_REARM_SHIFT;
649 if (clr_interrupt)
650 val |= 1 << DB_EQ_CLR_SHIFT;
651 if (event)
652 val |= 1 << DB_EQ_EVNT_SHIFT;
653
654 val |= num_processed << DB_EQ_NUM_POPPED_SHIFT;
655 /* Setting lower order EQ_ID Bits */
656 val |= (id & DB_EQ_RING_ID_LOW_MASK);
657
658 /* Setting Higher order EQ_ID Bits */
659 val |= (((id >> DB_EQ_HIGH_FEILD_SHIFT) &
660 DB_EQ_RING_ID_HIGH_MASK)
661 << DB_EQ_HIGH_SET_SHIFT);
662
663 iowrite32(val, phba->db_va + DB_EQ_OFFSET);
664 }
665
666 /**
667 * be_isr_mcc - The isr routine of the driver.
668 * @irq: Not used
669 * @dev_id: Pointer to host adapter structure
670 */
671 static irqreturn_t be_isr_mcc(int irq, void *dev_id)
672 {
673 struct beiscsi_hba *phba;
674 struct be_eq_entry *eqe;
675 struct be_queue_info *eq;
676 struct be_queue_info *mcc;
677 unsigned int mcc_events;
678 struct be_eq_obj *pbe_eq;
679
680 pbe_eq = dev_id;
681 eq = &pbe_eq->q;
682 phba = pbe_eq->phba;
683 mcc = &phba->ctrl.mcc_obj.cq;
684 eqe = queue_tail_node(eq);
685
686 mcc_events = 0;
687 while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]
688 & EQE_VALID_MASK) {
689 if (((eqe->dw[offsetof(struct amap_eq_entry,
690 resource_id) / 32] &
691 EQE_RESID_MASK) >> 16) == mcc->id) {
692 mcc_events++;
693 }
694 AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
695 queue_tail_inc(eq);
696 eqe = queue_tail_node(eq);
697 }
698
699 if (mcc_events) {
700 queue_work(phba->wq, &pbe_eq->mcc_work);
701 hwi_ring_eq_db(phba, eq->id, 1, mcc_events, 1, 1);
702 }
703 return IRQ_HANDLED;
704 }
705
706 /**
707 * be_isr_msix - The isr routine of the driver.
708 * @irq: Not used
709 * @dev_id: Pointer to host adapter structure
710 */
711 static irqreturn_t be_isr_msix(int irq, void *dev_id)
712 {
713 struct beiscsi_hba *phba;
714 struct be_queue_info *eq;
715 struct be_eq_obj *pbe_eq;
716
717 pbe_eq = dev_id;
718 eq = &pbe_eq->q;
719
720 phba = pbe_eq->phba;
721 /* disable interrupt till iopoll completes */
722 hwi_ring_eq_db(phba, eq->id, 1, 0, 0, 1);
723 irq_poll_sched(&pbe_eq->iopoll);
724
725 return IRQ_HANDLED;
726 }
727
728 /**
729 * be_isr - The isr routine of the driver.
730 * @irq: Not used
731 * @dev_id: Pointer to host adapter structure
732 */
733 static irqreturn_t be_isr(int irq, void *dev_id)
734 {
735 struct beiscsi_hba *phba;
736 struct hwi_controller *phwi_ctrlr;
737 struct hwi_context_memory *phwi_context;
738 struct be_eq_entry *eqe;
739 struct be_queue_info *eq;
740 struct be_queue_info *mcc;
741 unsigned int mcc_events, io_events;
742 struct be_ctrl_info *ctrl;
743 struct be_eq_obj *pbe_eq;
744 int isr, rearm;
745
746 phba = dev_id;
747 ctrl = &phba->ctrl;
748 isr = ioread32(ctrl->csr + CEV_ISR0_OFFSET +
749 (PCI_FUNC(ctrl->pdev->devfn) * CEV_ISR_SIZE));
750 if (!isr)
751 return IRQ_NONE;
752
753 phwi_ctrlr = phba->phwi_ctrlr;
754 phwi_context = phwi_ctrlr->phwi_ctxt;
755 pbe_eq = &phwi_context->be_eq[0];
756
757 eq = &phwi_context->be_eq[0].q;
758 mcc = &phba->ctrl.mcc_obj.cq;
759 eqe = queue_tail_node(eq);
760
761 io_events = 0;
762 mcc_events = 0;
763 while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]
764 & EQE_VALID_MASK) {
765 if (((eqe->dw[offsetof(struct amap_eq_entry,
766 resource_id) / 32] & EQE_RESID_MASK) >> 16) == mcc->id)
767 mcc_events++;
768 else
769 io_events++;
770 AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
771 queue_tail_inc(eq);
772 eqe = queue_tail_node(eq);
773 }
774 if (!io_events && !mcc_events)
775 return IRQ_NONE;
776
777 /* no need to rearm if interrupt is only for IOs */
778 rearm = 0;
779 if (mcc_events) {
780 queue_work(phba->wq, &pbe_eq->mcc_work);
781 /* rearm for MCCQ */
782 rearm = 1;
783 }
784 if (io_events)
785 irq_poll_sched(&pbe_eq->iopoll);
786 hwi_ring_eq_db(phba, eq->id, 0, (io_events + mcc_events), rearm, 1);
787 return IRQ_HANDLED;
788 }
789
790 static void beiscsi_free_irqs(struct beiscsi_hba *phba)
791 {
792 struct hwi_context_memory *phwi_context;
793 int i;
794
795 if (!phba->pcidev->msix_enabled) {
796 if (phba->pcidev->irq)
797 free_irq(phba->pcidev->irq, phba);
798 return;
799 }
800
801 phwi_context = phba->phwi_ctrlr->phwi_ctxt;
802 for (i = 0; i <= phba->num_cpus; i++) {
803 free_irq(pci_irq_vector(phba->pcidev, i),
804 &phwi_context->be_eq[i]);
805 kfree(phba->msi_name[i]);
806 }
807 }
808
809 static int beiscsi_init_irqs(struct beiscsi_hba *phba)
810 {
811 struct pci_dev *pcidev = phba->pcidev;
812 struct hwi_controller *phwi_ctrlr;
813 struct hwi_context_memory *phwi_context;
814 int ret, i, j;
815
816 phwi_ctrlr = phba->phwi_ctrlr;
817 phwi_context = phwi_ctrlr->phwi_ctxt;
818
819 if (pcidev->msix_enabled) {
820 for (i = 0; i < phba->num_cpus; i++) {
821 phba->msi_name[i] = kasprintf(GFP_KERNEL,
822 "beiscsi_%02x_%02x",
823 phba->shost->host_no, i);
824 if (!phba->msi_name[i]) {
825 ret = -ENOMEM;
826 goto free_msix_irqs;
827 }
828
829 ret = request_irq(pci_irq_vector(pcidev, i),
830 be_isr_msix, 0, phba->msi_name[i],
831 &phwi_context->be_eq[i]);
832 if (ret) {
833 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
834 "BM_%d : beiscsi_init_irqs-Failed to"
835 "register msix for i = %d\n",
836 i);
837 kfree(phba->msi_name[i]);
838 goto free_msix_irqs;
839 }
840 }
841 phba->msi_name[i] = kasprintf(GFP_KERNEL, "beiscsi_mcc_%02x",
842 phba->shost->host_no);
843 if (!phba->msi_name[i]) {
844 ret = -ENOMEM;
845 goto free_msix_irqs;
846 }
847 ret = request_irq(pci_irq_vector(pcidev, i), be_isr_mcc, 0,
848 phba->msi_name[i], &phwi_context->be_eq[i]);
849 if (ret) {
850 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT ,
851 "BM_%d : beiscsi_init_irqs-"
852 "Failed to register beiscsi_msix_mcc\n");
853 kfree(phba->msi_name[i]);
854 goto free_msix_irqs;
855 }
856
857 } else {
858 ret = request_irq(pcidev->irq, be_isr, IRQF_SHARED,
859 "beiscsi", phba);
860 if (ret) {
861 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
862 "BM_%d : beiscsi_init_irqs-"
863 "Failed to register irq\\n");
864 return ret;
865 }
866 }
867 return 0;
868 free_msix_irqs:
869 for (j = i - 1; j >= 0; j--) {
870 free_irq(pci_irq_vector(pcidev, i), &phwi_context->be_eq[j]);
871 kfree(phba->msi_name[j]);
872 }
873 return ret;
874 }
875
876 void hwi_ring_cq_db(struct beiscsi_hba *phba,
877 unsigned int id, unsigned int num_processed,
878 unsigned char rearm)
879 {
880 u32 val = 0;
881
882 if (rearm)
883 val |= 1 << DB_CQ_REARM_SHIFT;
884
885 val |= num_processed << DB_CQ_NUM_POPPED_SHIFT;
886
887 /* Setting lower order CQ_ID Bits */
888 val |= (id & DB_CQ_RING_ID_LOW_MASK);
889
890 /* Setting Higher order CQ_ID Bits */
891 val |= (((id >> DB_CQ_HIGH_FEILD_SHIFT) &
892 DB_CQ_RING_ID_HIGH_MASK)
893 << DB_CQ_HIGH_SET_SHIFT);
894
895 iowrite32(val, phba->db_va + DB_CQ_OFFSET);
896 }
897
898 static struct sgl_handle *alloc_io_sgl_handle(struct beiscsi_hba *phba)
899 {
900 struct sgl_handle *psgl_handle;
901 unsigned long flags;
902
903 spin_lock_irqsave(&phba->io_sgl_lock, flags);
904 if (phba->io_sgl_hndl_avbl) {
905 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_IO,
906 "BM_%d : In alloc_io_sgl_handle,"
907 " io_sgl_alloc_index=%d\n",
908 phba->io_sgl_alloc_index);
909
910 psgl_handle = phba->io_sgl_hndl_base[phba->
911 io_sgl_alloc_index];
912 phba->io_sgl_hndl_base[phba->io_sgl_alloc_index] = NULL;
913 phba->io_sgl_hndl_avbl--;
914 if (phba->io_sgl_alloc_index == (phba->params.
915 ios_per_ctrl - 1))
916 phba->io_sgl_alloc_index = 0;
917 else
918 phba->io_sgl_alloc_index++;
919 } else
920 psgl_handle = NULL;
921 spin_unlock_irqrestore(&phba->io_sgl_lock, flags);
922 return psgl_handle;
923 }
924
925 static void
926 free_io_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle)
927 {
928 unsigned long flags;
929
930 spin_lock_irqsave(&phba->io_sgl_lock, flags);
931 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_IO,
932 "BM_%d : In free_,io_sgl_free_index=%d\n",
933 phba->io_sgl_free_index);
934
935 if (phba->io_sgl_hndl_base[phba->io_sgl_free_index]) {
936 /*
937 * this can happen if clean_task is called on a task that
938 * failed in xmit_task or alloc_pdu.
939 */
940 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_IO,
941 "BM_%d : Double Free in IO SGL io_sgl_free_index=%d, value there=%p\n",
942 phba->io_sgl_free_index,
943 phba->io_sgl_hndl_base[phba->io_sgl_free_index]);
944 spin_unlock_irqrestore(&phba->io_sgl_lock, flags);
945 return;
946 }
947 phba->io_sgl_hndl_base[phba->io_sgl_free_index] = psgl_handle;
948 phba->io_sgl_hndl_avbl++;
949 if (phba->io_sgl_free_index == (phba->params.ios_per_ctrl - 1))
950 phba->io_sgl_free_index = 0;
951 else
952 phba->io_sgl_free_index++;
953 spin_unlock_irqrestore(&phba->io_sgl_lock, flags);
954 }
955
956 static inline struct wrb_handle *
957 beiscsi_get_wrb_handle(struct hwi_wrb_context *pwrb_context,
958 unsigned int wrbs_per_cxn)
959 {
960 struct wrb_handle *pwrb_handle;
961 unsigned long flags;
962
963 spin_lock_irqsave(&pwrb_context->wrb_lock, flags);
964 if (!pwrb_context->wrb_handles_available) {
965 spin_unlock_irqrestore(&pwrb_context->wrb_lock, flags);
966 return NULL;
967 }
968 pwrb_handle = pwrb_context->pwrb_handle_base[pwrb_context->alloc_index];
969 pwrb_context->wrb_handles_available--;
970 if (pwrb_context->alloc_index == (wrbs_per_cxn - 1))
971 pwrb_context->alloc_index = 0;
972 else
973 pwrb_context->alloc_index++;
974 spin_unlock_irqrestore(&pwrb_context->wrb_lock, flags);
975
976 if (pwrb_handle)
977 memset(pwrb_handle->pwrb, 0, sizeof(*pwrb_handle->pwrb));
978
979 return pwrb_handle;
980 }
981
982 /**
983 * alloc_wrb_handle - To allocate a wrb handle
984 * @phba: The hba pointer
985 * @cid: The cid to use for allocation
986 * @pwrb_context: ptr to ptr to wrb context
987 *
988 * This happens under session_lock until submission to chip
989 */
990 struct wrb_handle *alloc_wrb_handle(struct beiscsi_hba *phba, unsigned int cid,
991 struct hwi_wrb_context **pcontext)
992 {
993 struct hwi_wrb_context *pwrb_context;
994 struct hwi_controller *phwi_ctrlr;
995 uint16_t cri_index = BE_GET_CRI_FROM_CID(cid);
996
997 phwi_ctrlr = phba->phwi_ctrlr;
998 pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
999 /* return the context address */
1000 *pcontext = pwrb_context;
1001 return beiscsi_get_wrb_handle(pwrb_context, phba->params.wrbs_per_cxn);
1002 }
1003
1004 static inline void
1005 beiscsi_put_wrb_handle(struct hwi_wrb_context *pwrb_context,
1006 struct wrb_handle *pwrb_handle,
1007 unsigned int wrbs_per_cxn)
1008 {
1009 unsigned long flags;
1010
1011 spin_lock_irqsave(&pwrb_context->wrb_lock, flags);
1012 pwrb_context->pwrb_handle_base[pwrb_context->free_index] = pwrb_handle;
1013 pwrb_context->wrb_handles_available++;
1014 if (pwrb_context->free_index == (wrbs_per_cxn - 1))
1015 pwrb_context->free_index = 0;
1016 else
1017 pwrb_context->free_index++;
1018 pwrb_handle->pio_handle = NULL;
1019 spin_unlock_irqrestore(&pwrb_context->wrb_lock, flags);
1020 }
1021
1022 /**
1023 * free_wrb_handle - To free the wrb handle back to pool
1024 * @phba: The hba pointer
1025 * @pwrb_context: The context to free from
1026 * @pwrb_handle: The wrb_handle to free
1027 *
1028 * This happens under session_lock until submission to chip
1029 */
1030 static void
1031 free_wrb_handle(struct beiscsi_hba *phba, struct hwi_wrb_context *pwrb_context,
1032 struct wrb_handle *pwrb_handle)
1033 {
1034 beiscsi_put_wrb_handle(pwrb_context,
1035 pwrb_handle,
1036 phba->params.wrbs_per_cxn);
1037 beiscsi_log(phba, KERN_INFO,
1038 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
1039 "BM_%d : FREE WRB: pwrb_handle=%p free_index=0x%x"
1040 "wrb_handles_available=%d\n",
1041 pwrb_handle, pwrb_context->free_index,
1042 pwrb_context->wrb_handles_available);
1043 }
1044
1045 static struct sgl_handle *alloc_mgmt_sgl_handle(struct beiscsi_hba *phba)
1046 {
1047 struct sgl_handle *psgl_handle;
1048 unsigned long flags;
1049
1050 spin_lock_irqsave(&phba->mgmt_sgl_lock, flags);
1051 if (phba->eh_sgl_hndl_avbl) {
1052 psgl_handle = phba->eh_sgl_hndl_base[phba->eh_sgl_alloc_index];
1053 phba->eh_sgl_hndl_base[phba->eh_sgl_alloc_index] = NULL;
1054 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1055 "BM_%d : mgmt_sgl_alloc_index=%d=0x%x\n",
1056 phba->eh_sgl_alloc_index,
1057 phba->eh_sgl_alloc_index);
1058
1059 phba->eh_sgl_hndl_avbl--;
1060 if (phba->eh_sgl_alloc_index ==
1061 (phba->params.icds_per_ctrl - phba->params.ios_per_ctrl -
1062 1))
1063 phba->eh_sgl_alloc_index = 0;
1064 else
1065 phba->eh_sgl_alloc_index++;
1066 } else
1067 psgl_handle = NULL;
1068 spin_unlock_irqrestore(&phba->mgmt_sgl_lock, flags);
1069 return psgl_handle;
1070 }
1071
1072 void
1073 free_mgmt_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle)
1074 {
1075 unsigned long flags;
1076
1077 spin_lock_irqsave(&phba->mgmt_sgl_lock, flags);
1078 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1079 "BM_%d : In free_mgmt_sgl_handle,"
1080 "eh_sgl_free_index=%d\n",
1081 phba->eh_sgl_free_index);
1082
1083 if (phba->eh_sgl_hndl_base[phba->eh_sgl_free_index]) {
1084 /*
1085 * this can happen if clean_task is called on a task that
1086 * failed in xmit_task or alloc_pdu.
1087 */
1088 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
1089 "BM_%d : Double Free in eh SGL ,"
1090 "eh_sgl_free_index=%d\n",
1091 phba->eh_sgl_free_index);
1092 spin_unlock_irqrestore(&phba->mgmt_sgl_lock, flags);
1093 return;
1094 }
1095 phba->eh_sgl_hndl_base[phba->eh_sgl_free_index] = psgl_handle;
1096 phba->eh_sgl_hndl_avbl++;
1097 if (phba->eh_sgl_free_index ==
1098 (phba->params.icds_per_ctrl - phba->params.ios_per_ctrl - 1))
1099 phba->eh_sgl_free_index = 0;
1100 else
1101 phba->eh_sgl_free_index++;
1102 spin_unlock_irqrestore(&phba->mgmt_sgl_lock, flags);
1103 }
1104
1105 static void
1106 be_complete_io(struct beiscsi_conn *beiscsi_conn,
1107 struct iscsi_task *task,
1108 struct common_sol_cqe *csol_cqe)
1109 {
1110 struct beiscsi_io_task *io_task = task->dd_data;
1111 struct be_status_bhs *sts_bhs =
1112 (struct be_status_bhs *)io_task->cmd_bhs;
1113 struct iscsi_conn *conn = beiscsi_conn->conn;
1114 unsigned char *sense;
1115 u32 resid = 0, exp_cmdsn, max_cmdsn;
1116 u8 rsp, status, flags;
1117
1118 exp_cmdsn = csol_cqe->exp_cmdsn;
1119 max_cmdsn = (csol_cqe->exp_cmdsn +
1120 csol_cqe->cmd_wnd - 1);
1121 rsp = csol_cqe->i_resp;
1122 status = csol_cqe->i_sts;
1123 flags = csol_cqe->i_flags;
1124 resid = csol_cqe->res_cnt;
1125
1126 if (!task->sc) {
1127 if (io_task->scsi_cmnd) {
1128 scsi_dma_unmap(io_task->scsi_cmnd);
1129 io_task->scsi_cmnd = NULL;
1130 }
1131
1132 return;
1133 }
1134 task->sc->result = (DID_OK << 16) | status;
1135 if (rsp != ISCSI_STATUS_CMD_COMPLETED) {
1136 task->sc->result = DID_ERROR << 16;
1137 goto unmap;
1138 }
1139
1140 /* bidi not initially supported */
1141 if (flags & (ISCSI_FLAG_CMD_UNDERFLOW | ISCSI_FLAG_CMD_OVERFLOW)) {
1142 if (!status && (flags & ISCSI_FLAG_CMD_OVERFLOW))
1143 task->sc->result = DID_ERROR << 16;
1144
1145 if (flags & ISCSI_FLAG_CMD_UNDERFLOW) {
1146 scsi_set_resid(task->sc, resid);
1147 if (!status && (scsi_bufflen(task->sc) - resid <
1148 task->sc->underflow))
1149 task->sc->result = DID_ERROR << 16;
1150 }
1151 }
1152
1153 if (status == SAM_STAT_CHECK_CONDITION) {
1154 u16 sense_len;
1155 unsigned short *slen = (unsigned short *)sts_bhs->sense_info;
1156
1157 sense = sts_bhs->sense_info + sizeof(unsigned short);
1158 sense_len = be16_to_cpu(*slen);
1159 memcpy(task->sc->sense_buffer, sense,
1160 min_t(u16, sense_len, SCSI_SENSE_BUFFERSIZE));
1161 }
1162
1163 if (io_task->cmd_bhs->iscsi_hdr.flags & ISCSI_FLAG_CMD_READ)
1164 conn->rxdata_octets += resid;
1165 unmap:
1166 if (io_task->scsi_cmnd) {
1167 scsi_dma_unmap(io_task->scsi_cmnd);
1168 io_task->scsi_cmnd = NULL;
1169 }
1170 iscsi_complete_scsi_task(task, exp_cmdsn, max_cmdsn);
1171 }
1172
1173 static void
1174 be_complete_logout(struct beiscsi_conn *beiscsi_conn,
1175 struct iscsi_task *task,
1176 struct common_sol_cqe *csol_cqe)
1177 {
1178 struct iscsi_logout_rsp *hdr;
1179 struct beiscsi_io_task *io_task = task->dd_data;
1180 struct iscsi_conn *conn = beiscsi_conn->conn;
1181
1182 hdr = (struct iscsi_logout_rsp *)task->hdr;
1183 hdr->opcode = ISCSI_OP_LOGOUT_RSP;
1184 hdr->t2wait = 5;
1185 hdr->t2retain = 0;
1186 hdr->flags = csol_cqe->i_flags;
1187 hdr->response = csol_cqe->i_resp;
1188 hdr->exp_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn);
1189 hdr->max_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn +
1190 csol_cqe->cmd_wnd - 1);
1191
1192 hdr->dlength[0] = 0;
1193 hdr->dlength[1] = 0;
1194 hdr->dlength[2] = 0;
1195 hdr->hlength = 0;
1196 hdr->itt = io_task->libiscsi_itt;
1197 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0);
1198 }
1199
1200 static void
1201 be_complete_tmf(struct beiscsi_conn *beiscsi_conn,
1202 struct iscsi_task *task,
1203 struct common_sol_cqe *csol_cqe)
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 = csol_cqe->i_flags;
1212 hdr->response = csol_cqe->i_resp;
1213 hdr->exp_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn);
1214 hdr->max_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn +
1215 csol_cqe->cmd_wnd - 1);
1216
1217 hdr->itt = io_task->libiscsi_itt;
1218 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0);
1219 }
1220
1221 static void
1222 hwi_complete_drvr_msgs(struct beiscsi_conn *beiscsi_conn,
1223 struct beiscsi_hba *phba, struct sol_cqe *psol)
1224 {
1225 struct hwi_wrb_context *pwrb_context;
1226 uint16_t wrb_index, cid, cri_index;
1227 struct hwi_controller *phwi_ctrlr;
1228 struct wrb_handle *pwrb_handle;
1229 struct iscsi_session *session;
1230 struct iscsi_task *task;
1231
1232 phwi_ctrlr = phba->phwi_ctrlr;
1233 if (is_chip_be2_be3r(phba)) {
1234 wrb_index = AMAP_GET_BITS(struct amap_it_dmsg_cqe,
1235 wrb_idx, psol);
1236 cid = AMAP_GET_BITS(struct amap_it_dmsg_cqe,
1237 cid, psol);
1238 } else {
1239 wrb_index = AMAP_GET_BITS(struct amap_it_dmsg_cqe_v2,
1240 wrb_idx, psol);
1241 cid = AMAP_GET_BITS(struct amap_it_dmsg_cqe_v2,
1242 cid, psol);
1243 }
1244
1245 cri_index = BE_GET_CRI_FROM_CID(cid);
1246 pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
1247 pwrb_handle = pwrb_context->pwrb_handle_basestd[wrb_index];
1248 session = beiscsi_conn->conn->session;
1249 spin_lock_bh(&session->back_lock);
1250 task = pwrb_handle->pio_handle;
1251 if (task)
1252 __iscsi_put_task(task);
1253 spin_unlock_bh(&session->back_lock);
1254 }
1255
1256 static void
1257 be_complete_nopin_resp(struct beiscsi_conn *beiscsi_conn,
1258 struct iscsi_task *task,
1259 struct common_sol_cqe *csol_cqe)
1260 {
1261 struct iscsi_nopin *hdr;
1262 struct iscsi_conn *conn = beiscsi_conn->conn;
1263 struct beiscsi_io_task *io_task = task->dd_data;
1264
1265 hdr = (struct iscsi_nopin *)task->hdr;
1266 hdr->flags = csol_cqe->i_flags;
1267 hdr->exp_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn);
1268 hdr->max_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn +
1269 csol_cqe->cmd_wnd - 1);
1270
1271 hdr->opcode = ISCSI_OP_NOOP_IN;
1272 hdr->itt = io_task->libiscsi_itt;
1273 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0);
1274 }
1275
1276 static void adapter_get_sol_cqe(struct beiscsi_hba *phba,
1277 struct sol_cqe *psol,
1278 struct common_sol_cqe *csol_cqe)
1279 {
1280 if (is_chip_be2_be3r(phba)) {
1281 csol_cqe->exp_cmdsn = AMAP_GET_BITS(struct amap_sol_cqe,
1282 i_exp_cmd_sn, psol);
1283 csol_cqe->res_cnt = AMAP_GET_BITS(struct amap_sol_cqe,
1284 i_res_cnt, psol);
1285 csol_cqe->cmd_wnd = AMAP_GET_BITS(struct amap_sol_cqe,
1286 i_cmd_wnd, psol);
1287 csol_cqe->wrb_index = AMAP_GET_BITS(struct amap_sol_cqe,
1288 wrb_index, psol);
1289 csol_cqe->cid = AMAP_GET_BITS(struct amap_sol_cqe,
1290 cid, psol);
1291 csol_cqe->hw_sts = AMAP_GET_BITS(struct amap_sol_cqe,
1292 hw_sts, psol);
1293 csol_cqe->i_resp = AMAP_GET_BITS(struct amap_sol_cqe,
1294 i_resp, psol);
1295 csol_cqe->i_sts = AMAP_GET_BITS(struct amap_sol_cqe,
1296 i_sts, psol);
1297 csol_cqe->i_flags = AMAP_GET_BITS(struct amap_sol_cqe,
1298 i_flags, psol);
1299 } else {
1300 csol_cqe->exp_cmdsn = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1301 i_exp_cmd_sn, psol);
1302 csol_cqe->res_cnt = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1303 i_res_cnt, psol);
1304 csol_cqe->wrb_index = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1305 wrb_index, psol);
1306 csol_cqe->cid = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1307 cid, psol);
1308 csol_cqe->hw_sts = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1309 hw_sts, psol);
1310 csol_cqe->cmd_wnd = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1311 i_cmd_wnd, psol);
1312 if (AMAP_GET_BITS(struct amap_sol_cqe_v2,
1313 cmd_cmpl, psol))
1314 csol_cqe->i_sts = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1315 i_sts, psol);
1316 else
1317 csol_cqe->i_resp = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1318 i_sts, psol);
1319 if (AMAP_GET_BITS(struct amap_sol_cqe_v2,
1320 u, psol))
1321 csol_cqe->i_flags = ISCSI_FLAG_CMD_UNDERFLOW;
1322
1323 if (AMAP_GET_BITS(struct amap_sol_cqe_v2,
1324 o, psol))
1325 csol_cqe->i_flags |= ISCSI_FLAG_CMD_OVERFLOW;
1326 }
1327 }
1328
1329
1330 static void hwi_complete_cmd(struct beiscsi_conn *beiscsi_conn,
1331 struct beiscsi_hba *phba, struct sol_cqe *psol)
1332 {
1333 struct iscsi_conn *conn = beiscsi_conn->conn;
1334 struct iscsi_session *session = conn->session;
1335 struct common_sol_cqe csol_cqe = {0};
1336 struct hwi_wrb_context *pwrb_context;
1337 struct hwi_controller *phwi_ctrlr;
1338 struct wrb_handle *pwrb_handle;
1339 struct iscsi_task *task;
1340 uint16_t cri_index = 0;
1341 uint8_t type;
1342
1343 phwi_ctrlr = phba->phwi_ctrlr;
1344
1345 /* Copy the elements to a common structure */
1346 adapter_get_sol_cqe(phba, psol, &csol_cqe);
1347
1348 cri_index = BE_GET_CRI_FROM_CID(csol_cqe.cid);
1349 pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
1350
1351 pwrb_handle = pwrb_context->pwrb_handle_basestd[
1352 csol_cqe.wrb_index];
1353
1354 spin_lock_bh(&session->back_lock);
1355 task = pwrb_handle->pio_handle;
1356 if (!task) {
1357 spin_unlock_bh(&session->back_lock);
1358 return;
1359 }
1360 type = ((struct beiscsi_io_task *)task->dd_data)->wrb_type;
1361
1362 switch (type) {
1363 case HWH_TYPE_IO:
1364 case HWH_TYPE_IO_RD:
1365 if ((task->hdr->opcode & ISCSI_OPCODE_MASK) ==
1366 ISCSI_OP_NOOP_OUT)
1367 be_complete_nopin_resp(beiscsi_conn, task, &csol_cqe);
1368 else
1369 be_complete_io(beiscsi_conn, task, &csol_cqe);
1370 break;
1371
1372 case HWH_TYPE_LOGOUT:
1373 if ((task->hdr->opcode & ISCSI_OPCODE_MASK) == ISCSI_OP_LOGOUT)
1374 be_complete_logout(beiscsi_conn, task, &csol_cqe);
1375 else
1376 be_complete_tmf(beiscsi_conn, task, &csol_cqe);
1377 break;
1378
1379 case HWH_TYPE_LOGIN:
1380 beiscsi_log(phba, KERN_ERR,
1381 BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
1382 "BM_%d :\t\t No HWH_TYPE_LOGIN Expected in"
1383 " hwi_complete_cmd- Solicited path\n");
1384 break;
1385
1386 case HWH_TYPE_NOP:
1387 be_complete_nopin_resp(beiscsi_conn, task, &csol_cqe);
1388 break;
1389
1390 default:
1391 beiscsi_log(phba, KERN_WARNING,
1392 BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
1393 "BM_%d : In hwi_complete_cmd, unknown type = %d"
1394 "wrb_index 0x%x CID 0x%x\n", type,
1395 csol_cqe.wrb_index,
1396 csol_cqe.cid);
1397 break;
1398 }
1399
1400 spin_unlock_bh(&session->back_lock);
1401 }
1402
1403 /**
1404 * ASYNC PDUs include
1405 * a. Unsolicited NOP-In (target initiated NOP-In)
1406 * b. ASYNC Messages
1407 * c. Reject PDU
1408 * d. Login response
1409 * These headers arrive unprocessed by the EP firmware.
1410 * iSCSI layer processes them.
1411 */
1412 static unsigned int
1413 beiscsi_complete_pdu(struct beiscsi_conn *beiscsi_conn,
1414 struct pdu_base *phdr, void *pdata, unsigned int dlen)
1415 {
1416 struct beiscsi_hba *phba = beiscsi_conn->phba;
1417 struct iscsi_conn *conn = beiscsi_conn->conn;
1418 struct beiscsi_io_task *io_task;
1419 struct iscsi_hdr *login_hdr;
1420 struct iscsi_task *task;
1421 u8 code;
1422
1423 code = AMAP_GET_BITS(struct amap_pdu_base, opcode, phdr);
1424 switch (code) {
1425 case ISCSI_OP_NOOP_IN:
1426 pdata = NULL;
1427 dlen = 0;
1428 break;
1429 case ISCSI_OP_ASYNC_EVENT:
1430 break;
1431 case ISCSI_OP_REJECT:
1432 WARN_ON(!pdata);
1433 WARN_ON(!(dlen == 48));
1434 beiscsi_log(phba, KERN_ERR,
1435 BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
1436 "BM_%d : In ISCSI_OP_REJECT\n");
1437 break;
1438 case ISCSI_OP_LOGIN_RSP:
1439 case ISCSI_OP_TEXT_RSP:
1440 task = conn->login_task;
1441 io_task = task->dd_data;
1442 login_hdr = (struct iscsi_hdr *)phdr;
1443 login_hdr->itt = io_task->libiscsi_itt;
1444 break;
1445 default:
1446 beiscsi_log(phba, KERN_WARNING,
1447 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
1448 "BM_%d : unrecognized async PDU opcode 0x%x\n",
1449 code);
1450 return 1;
1451 }
1452 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)phdr, pdata, dlen);
1453 return 0;
1454 }
1455
1456 static inline void
1457 beiscsi_hdl_put_handle(struct hd_async_context *pasync_ctx,
1458 struct hd_async_handle *pasync_handle)
1459 {
1460 pasync_handle->is_final = 0;
1461 pasync_handle->buffer_len = 0;
1462 pasync_handle->in_use = 0;
1463 list_del_init(&pasync_handle->link);
1464 }
1465
1466 static void
1467 beiscsi_hdl_purge_handles(struct beiscsi_hba *phba,
1468 struct hd_async_context *pasync_ctx,
1469 u16 cri)
1470 {
1471 struct hd_async_handle *pasync_handle, *tmp_handle;
1472 struct list_head *plist;
1473
1474 plist = &pasync_ctx->async_entry[cri].wq.list;
1475 list_for_each_entry_safe(pasync_handle, tmp_handle, plist, link)
1476 beiscsi_hdl_put_handle(pasync_ctx, pasync_handle);
1477
1478 INIT_LIST_HEAD(&pasync_ctx->async_entry[cri].wq.list);
1479 pasync_ctx->async_entry[cri].wq.hdr_len = 0;
1480 pasync_ctx->async_entry[cri].wq.bytes_received = 0;
1481 pasync_ctx->async_entry[cri].wq.bytes_needed = 0;
1482 }
1483
1484 static struct hd_async_handle *
1485 beiscsi_hdl_get_handle(struct beiscsi_conn *beiscsi_conn,
1486 struct hd_async_context *pasync_ctx,
1487 struct i_t_dpdu_cqe *pdpdu_cqe,
1488 u8 *header)
1489 {
1490 struct beiscsi_hba *phba = beiscsi_conn->phba;
1491 struct hd_async_handle *pasync_handle;
1492 struct be_bus_address phys_addr;
1493 u16 cid, code, ci, cri;
1494 u8 final, error = 0;
1495 u32 dpl;
1496
1497 cid = beiscsi_conn->beiscsi_conn_cid;
1498 cri = BE_GET_ASYNC_CRI_FROM_CID(cid);
1499 /**
1500 * This function is invoked to get the right async_handle structure
1501 * from a given DEF PDU CQ entry.
1502 *
1503 * - index in CQ entry gives the vertical index
1504 * - address in CQ entry is the offset where the DMA last ended
1505 * - final - no more notifications for this PDU
1506 */
1507 if (is_chip_be2_be3r(phba)) {
1508 dpl = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe,
1509 dpl, pdpdu_cqe);
1510 ci = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe,
1511 index, pdpdu_cqe);
1512 final = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe,
1513 final, pdpdu_cqe);
1514 } else {
1515 dpl = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe_v2,
1516 dpl, pdpdu_cqe);
1517 ci = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe_v2,
1518 index, pdpdu_cqe);
1519 final = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe_v2,
1520 final, pdpdu_cqe);
1521 }
1522
1523 /**
1524 * DB addr Hi/Lo is same for BE and SKH.
1525 * Subtract the dataplacementlength to get to the base.
1526 */
1527 phys_addr.u.a32.address_lo = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe,
1528 db_addr_lo, pdpdu_cqe);
1529 phys_addr.u.a32.address_lo -= dpl;
1530 phys_addr.u.a32.address_hi = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe,
1531 db_addr_hi, pdpdu_cqe);
1532
1533 code = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe, code, pdpdu_cqe);
1534 switch (code) {
1535 case UNSOL_HDR_NOTIFY:
1536 pasync_handle = pasync_ctx->async_entry[ci].header;
1537 *header = 1;
1538 break;
1539 case UNSOL_DATA_DIGEST_ERROR_NOTIFY:
1540 error = 1;
1541 case UNSOL_DATA_NOTIFY:
1542 pasync_handle = pasync_ctx->async_entry[ci].data;
1543 break;
1544 /* called only for above codes */
1545 default:
1546 return NULL;
1547 }
1548
1549 if (pasync_handle->pa.u.a64.address != phys_addr.u.a64.address ||
1550 pasync_handle->index != ci) {
1551 /* driver bug - if ci does not match async handle index */
1552 error = 1;
1553 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_ISCSI,
1554 "BM_%d : cid %u async PDU handle mismatch - addr in %cQE %llx at %u:addr in CQE %llx ci %u\n",
1555 cid, pasync_handle->is_header ? 'H' : 'D',
1556 pasync_handle->pa.u.a64.address,
1557 pasync_handle->index,
1558 phys_addr.u.a64.address, ci);
1559 /* FW has stale address - attempt continuing by dropping */
1560 }
1561
1562 /**
1563 * DEF PDU header and data buffers with errors should be simply
1564 * dropped as there are no consumers for it.
1565 */
1566 if (error) {
1567 beiscsi_hdl_put_handle(pasync_ctx, pasync_handle);
1568 return NULL;
1569 }
1570
1571 if (pasync_handle->in_use || !list_empty(&pasync_handle->link)) {
1572 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_ISCSI,
1573 "BM_%d : cid %d async PDU handle in use - code %d ci %d addr %llx\n",
1574 cid, code, ci, phys_addr.u.a64.address);
1575 beiscsi_hdl_purge_handles(phba, pasync_ctx, cri);
1576 }
1577
1578 list_del_init(&pasync_handle->link);
1579 /**
1580 * Each CID is associated with unique CRI.
1581 * ASYNC_CRI_FROM_CID mapping and CRI_FROM_CID are totaly different.
1582 **/
1583 pasync_handle->cri = cri;
1584 pasync_handle->is_final = final;
1585 pasync_handle->buffer_len = dpl;
1586 pasync_handle->in_use = 1;
1587
1588 return pasync_handle;
1589 }
1590
1591 static unsigned int
1592 beiscsi_hdl_fwd_pdu(struct beiscsi_conn *beiscsi_conn,
1593 struct hd_async_context *pasync_ctx,
1594 u16 cri)
1595 {
1596 struct iscsi_session *session = beiscsi_conn->conn->session;
1597 struct hd_async_handle *pasync_handle, *plast_handle;
1598 struct beiscsi_hba *phba = beiscsi_conn->phba;
1599 void *phdr = NULL, *pdata = NULL;
1600 u32 dlen = 0, status = 0;
1601 struct list_head *plist;
1602
1603 plist = &pasync_ctx->async_entry[cri].wq.list;
1604 plast_handle = NULL;
1605 list_for_each_entry(pasync_handle, plist, link) {
1606 plast_handle = pasync_handle;
1607 /* get the header, the first entry */
1608 if (!phdr) {
1609 phdr = pasync_handle->pbuffer;
1610 continue;
1611 }
1612 /* use first buffer to collect all the data */
1613 if (!pdata) {
1614 pdata = pasync_handle->pbuffer;
1615 dlen = pasync_handle->buffer_len;
1616 continue;
1617 }
1618 if (!pasync_handle->buffer_len ||
1619 (dlen + pasync_handle->buffer_len) >
1620 pasync_ctx->async_data.buffer_size)
1621 break;
1622 memcpy(pdata + dlen, pasync_handle->pbuffer,
1623 pasync_handle->buffer_len);
1624 dlen += pasync_handle->buffer_len;
1625 }
1626
1627 if (!plast_handle->is_final) {
1628 /* last handle should have final PDU notification from FW */
1629 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_ISCSI,
1630 "BM_%d : cid %u %p fwd async PDU opcode %x with last handle missing - HL%u:DN%u:DR%u\n",
1631 beiscsi_conn->beiscsi_conn_cid, plast_handle,
1632 AMAP_GET_BITS(struct amap_pdu_base, opcode, phdr),
1633 pasync_ctx->async_entry[cri].wq.hdr_len,
1634 pasync_ctx->async_entry[cri].wq.bytes_needed,
1635 pasync_ctx->async_entry[cri].wq.bytes_received);
1636 }
1637 spin_lock_bh(&session->back_lock);
1638 status = beiscsi_complete_pdu(beiscsi_conn, phdr, pdata, dlen);
1639 spin_unlock_bh(&session->back_lock);
1640 beiscsi_hdl_purge_handles(phba, pasync_ctx, cri);
1641 return status;
1642 }
1643
1644 static unsigned int
1645 beiscsi_hdl_gather_pdu(struct beiscsi_conn *beiscsi_conn,
1646 struct hd_async_context *pasync_ctx,
1647 struct hd_async_handle *pasync_handle)
1648 {
1649 unsigned int bytes_needed = 0, status = 0;
1650 u16 cri = pasync_handle->cri;
1651 struct cri_wait_queue *wq;
1652 struct beiscsi_hba *phba;
1653 struct pdu_base *ppdu;
1654 char *err = "";
1655
1656 phba = beiscsi_conn->phba;
1657 wq = &pasync_ctx->async_entry[cri].wq;
1658 if (pasync_handle->is_header) {
1659 /* check if PDU hdr is rcv'd when old hdr not completed */
1660 if (wq->hdr_len) {
1661 err = "incomplete";
1662 goto drop_pdu;
1663 }
1664 ppdu = pasync_handle->pbuffer;
1665 bytes_needed = AMAP_GET_BITS(struct amap_pdu_base,
1666 data_len_hi, ppdu);
1667 bytes_needed <<= 16;
1668 bytes_needed |= be16_to_cpu(AMAP_GET_BITS(struct amap_pdu_base,
1669 data_len_lo, ppdu));
1670 wq->hdr_len = pasync_handle->buffer_len;
1671 wq->bytes_received = 0;
1672 wq->bytes_needed = bytes_needed;
1673 list_add_tail(&pasync_handle->link, &wq->list);
1674 if (!bytes_needed)
1675 status = beiscsi_hdl_fwd_pdu(beiscsi_conn,
1676 pasync_ctx, cri);
1677 } else {
1678 /* check if data received has header and is needed */
1679 if (!wq->hdr_len || !wq->bytes_needed) {
1680 err = "header less";
1681 goto drop_pdu;
1682 }
1683 wq->bytes_received += pasync_handle->buffer_len;
1684 /* Something got overwritten? Better catch it here. */
1685 if (wq->bytes_received > wq->bytes_needed) {
1686 err = "overflow";
1687 goto drop_pdu;
1688 }
1689 list_add_tail(&pasync_handle->link, &wq->list);
1690 if (wq->bytes_received == wq->bytes_needed)
1691 status = beiscsi_hdl_fwd_pdu(beiscsi_conn,
1692 pasync_ctx, cri);
1693 }
1694 return status;
1695
1696 drop_pdu:
1697 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_ISCSI,
1698 "BM_%d : cid %u async PDU %s - def-%c:HL%u:DN%u:DR%u\n",
1699 beiscsi_conn->beiscsi_conn_cid, err,
1700 pasync_handle->is_header ? 'H' : 'D',
1701 wq->hdr_len, wq->bytes_needed,
1702 pasync_handle->buffer_len);
1703 /* discard this handle */
1704 beiscsi_hdl_put_handle(pasync_ctx, pasync_handle);
1705 /* free all the other handles in cri_wait_queue */
1706 beiscsi_hdl_purge_handles(phba, pasync_ctx, cri);
1707 /* try continuing */
1708 return status;
1709 }
1710
1711 static void
1712 beiscsi_hdq_post_handles(struct beiscsi_hba *phba,
1713 u8 header, u8 ulp_num, u16 nbuf)
1714 {
1715 struct hd_async_handle *pasync_handle;
1716 struct hd_async_context *pasync_ctx;
1717 struct hwi_controller *phwi_ctrlr;
1718 struct phys_addr *pasync_sge;
1719 u32 ring_id, doorbell = 0;
1720 u32 doorbell_offset;
1721 u16 prod, pi;
1722
1723 phwi_ctrlr = phba->phwi_ctrlr;
1724 pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr, ulp_num);
1725 if (header) {
1726 pasync_sge = pasync_ctx->async_header.ring_base;
1727 pi = pasync_ctx->async_header.pi;
1728 ring_id = phwi_ctrlr->default_pdu_hdr[ulp_num].id;
1729 doorbell_offset = phwi_ctrlr->default_pdu_hdr[ulp_num].
1730 doorbell_offset;
1731 } else {
1732 pasync_sge = pasync_ctx->async_data.ring_base;
1733 pi = pasync_ctx->async_data.pi;
1734 ring_id = phwi_ctrlr->default_pdu_data[ulp_num].id;
1735 doorbell_offset = phwi_ctrlr->default_pdu_data[ulp_num].
1736 doorbell_offset;
1737 }
1738
1739 for (prod = 0; prod < nbuf; prod++) {
1740 if (header)
1741 pasync_handle = pasync_ctx->async_entry[pi].header;
1742 else
1743 pasync_handle = pasync_ctx->async_entry[pi].data;
1744 WARN_ON(pasync_handle->is_header != header);
1745 WARN_ON(pasync_handle->index != pi);
1746 /* setup the ring only once */
1747 if (nbuf == pasync_ctx->num_entries) {
1748 /* note hi is lo */
1749 pasync_sge[pi].hi = pasync_handle->pa.u.a32.address_lo;
1750 pasync_sge[pi].lo = pasync_handle->pa.u.a32.address_hi;
1751 }
1752 if (++pi == pasync_ctx->num_entries)
1753 pi = 0;
1754 }
1755
1756 if (header)
1757 pasync_ctx->async_header.pi = pi;
1758 else
1759 pasync_ctx->async_data.pi = pi;
1760
1761 doorbell |= ring_id & DB_DEF_PDU_RING_ID_MASK;
1762 doorbell |= 1 << DB_DEF_PDU_REARM_SHIFT;
1763 doorbell |= 0 << DB_DEF_PDU_EVENT_SHIFT;
1764 doorbell |= (prod & DB_DEF_PDU_CQPROC_MASK) << DB_DEF_PDU_CQPROC_SHIFT;
1765 iowrite32(doorbell, phba->db_va + doorbell_offset);
1766 }
1767
1768 static void
1769 beiscsi_hdq_process_compl(struct beiscsi_conn *beiscsi_conn,
1770 struct i_t_dpdu_cqe *pdpdu_cqe)
1771 {
1772 struct beiscsi_hba *phba = beiscsi_conn->phba;
1773 struct hd_async_handle *pasync_handle = NULL;
1774 struct hd_async_context *pasync_ctx;
1775 struct hwi_controller *phwi_ctrlr;
1776 u8 ulp_num, consumed, header = 0;
1777 u16 cid_cri;
1778
1779 phwi_ctrlr = phba->phwi_ctrlr;
1780 cid_cri = BE_GET_CRI_FROM_CID(beiscsi_conn->beiscsi_conn_cid);
1781 ulp_num = BEISCSI_GET_ULP_FROM_CRI(phwi_ctrlr, cid_cri);
1782 pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr, ulp_num);
1783 pasync_handle = beiscsi_hdl_get_handle(beiscsi_conn, pasync_ctx,
1784 pdpdu_cqe, &header);
1785 if (is_chip_be2_be3r(phba))
1786 consumed = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe,
1787 num_cons, pdpdu_cqe);
1788 else
1789 consumed = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe_v2,
1790 num_cons, pdpdu_cqe);
1791 if (pasync_handle)
1792 beiscsi_hdl_gather_pdu(beiscsi_conn, pasync_ctx, pasync_handle);
1793 /* num_cons indicates number of 8 RQEs consumed */
1794 if (consumed)
1795 beiscsi_hdq_post_handles(phba, header, ulp_num, 8 * consumed);
1796 }
1797
1798 void beiscsi_process_mcc_cq(struct beiscsi_hba *phba)
1799 {
1800 struct be_queue_info *mcc_cq;
1801 struct be_mcc_compl *mcc_compl;
1802 unsigned int num_processed = 0;
1803
1804 mcc_cq = &phba->ctrl.mcc_obj.cq;
1805 mcc_compl = queue_tail_node(mcc_cq);
1806 mcc_compl->flags = le32_to_cpu(mcc_compl->flags);
1807 while (mcc_compl->flags & CQE_FLAGS_VALID_MASK) {
1808 if (beiscsi_hba_in_error(phba))
1809 return;
1810
1811 if (num_processed >= 32) {
1812 hwi_ring_cq_db(phba, mcc_cq->id,
1813 num_processed, 0);
1814 num_processed = 0;
1815 }
1816 if (mcc_compl->flags & CQE_FLAGS_ASYNC_MASK) {
1817 beiscsi_process_async_event(phba, mcc_compl);
1818 } else if (mcc_compl->flags & CQE_FLAGS_COMPLETED_MASK) {
1819 beiscsi_process_mcc_compl(&phba->ctrl, mcc_compl);
1820 }
1821
1822 mcc_compl->flags = 0;
1823 queue_tail_inc(mcc_cq);
1824 mcc_compl = queue_tail_node(mcc_cq);
1825 mcc_compl->flags = le32_to_cpu(mcc_compl->flags);
1826 num_processed++;
1827 }
1828
1829 if (num_processed > 0)
1830 hwi_ring_cq_db(phba, mcc_cq->id, num_processed, 1);
1831 }
1832
1833 static void beiscsi_mcc_work(struct work_struct *work)
1834 {
1835 struct be_eq_obj *pbe_eq;
1836 struct beiscsi_hba *phba;
1837
1838 pbe_eq = container_of(work, struct be_eq_obj, mcc_work);
1839 phba = pbe_eq->phba;
1840 beiscsi_process_mcc_cq(phba);
1841 /* rearm EQ for further interrupts */
1842 if (!beiscsi_hba_in_error(phba))
1843 hwi_ring_eq_db(phba, pbe_eq->q.id, 0, 0, 1, 1);
1844 }
1845
1846 /**
1847 * beiscsi_process_cq()- Process the Completion Queue
1848 * @pbe_eq: Event Q on which the Completion has come
1849 * @budget: Max number of events to processed
1850 *
1851 * return
1852 * Number of Completion Entries processed.
1853 **/
1854 unsigned int beiscsi_process_cq(struct be_eq_obj *pbe_eq, int budget)
1855 {
1856 struct be_queue_info *cq;
1857 struct sol_cqe *sol;
1858 struct dmsg_cqe *dmsg;
1859 unsigned int total = 0;
1860 unsigned int num_processed = 0;
1861 unsigned short code = 0, cid = 0;
1862 uint16_t cri_index = 0;
1863 struct beiscsi_conn *beiscsi_conn;
1864 struct beiscsi_endpoint *beiscsi_ep;
1865 struct iscsi_endpoint *ep;
1866 struct beiscsi_hba *phba;
1867
1868 cq = pbe_eq->cq;
1869 sol = queue_tail_node(cq);
1870 phba = pbe_eq->phba;
1871
1872 while (sol->dw[offsetof(struct amap_sol_cqe, valid) / 32] &
1873 CQE_VALID_MASK) {
1874 if (beiscsi_hba_in_error(phba))
1875 return 0;
1876
1877 be_dws_le_to_cpu(sol, sizeof(struct sol_cqe));
1878
1879 code = (sol->dw[offsetof(struct amap_sol_cqe, code) / 32] &
1880 CQE_CODE_MASK);
1881
1882 /* Get the CID */
1883 if (is_chip_be2_be3r(phba)) {
1884 cid = AMAP_GET_BITS(struct amap_sol_cqe, cid, sol);
1885 } else {
1886 if ((code == DRIVERMSG_NOTIFY) ||
1887 (code == UNSOL_HDR_NOTIFY) ||
1888 (code == UNSOL_DATA_NOTIFY))
1889 cid = AMAP_GET_BITS(
1890 struct amap_i_t_dpdu_cqe_v2,
1891 cid, sol);
1892 else
1893 cid = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1894 cid, sol);
1895 }
1896
1897 cri_index = BE_GET_CRI_FROM_CID(cid);
1898 ep = phba->ep_array[cri_index];
1899
1900 if (ep == NULL) {
1901 /* connection has already been freed
1902 * just move on to next one
1903 */
1904 beiscsi_log(phba, KERN_WARNING,
1905 BEISCSI_LOG_INIT,
1906 "BM_%d : proc cqe of disconn ep: cid %d\n",
1907 cid);
1908 goto proc_next_cqe;
1909 }
1910
1911 beiscsi_ep = ep->dd_data;
1912 beiscsi_conn = beiscsi_ep->conn;
1913
1914 /* replenish cq */
1915 if (num_processed == 32) {
1916 hwi_ring_cq_db(phba, cq->id, 32, 0);
1917 num_processed = 0;
1918 }
1919 total++;
1920
1921 switch (code) {
1922 case SOL_CMD_COMPLETE:
1923 hwi_complete_cmd(beiscsi_conn, phba, sol);
1924 break;
1925 case DRIVERMSG_NOTIFY:
1926 beiscsi_log(phba, KERN_INFO,
1927 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
1928 "BM_%d : Received %s[%d] on CID : %d\n",
1929 cqe_desc[code], code, cid);
1930
1931 dmsg = (struct dmsg_cqe *)sol;
1932 hwi_complete_drvr_msgs(beiscsi_conn, phba, sol);
1933 break;
1934 case UNSOL_HDR_NOTIFY:
1935 beiscsi_log(phba, KERN_INFO,
1936 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
1937 "BM_%d : Received %s[%d] on CID : %d\n",
1938 cqe_desc[code], code, cid);
1939
1940 spin_lock_bh(&phba->async_pdu_lock);
1941 beiscsi_hdq_process_compl(beiscsi_conn,
1942 (struct i_t_dpdu_cqe *)sol);
1943 spin_unlock_bh(&phba->async_pdu_lock);
1944 break;
1945 case UNSOL_DATA_NOTIFY:
1946 beiscsi_log(phba, KERN_INFO,
1947 BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
1948 "BM_%d : Received %s[%d] on CID : %d\n",
1949 cqe_desc[code], code, cid);
1950
1951 spin_lock_bh(&phba->async_pdu_lock);
1952 beiscsi_hdq_process_compl(beiscsi_conn,
1953 (struct i_t_dpdu_cqe *)sol);
1954 spin_unlock_bh(&phba->async_pdu_lock);
1955 break;
1956 case CXN_INVALIDATE_INDEX_NOTIFY:
1957 case CMD_INVALIDATED_NOTIFY:
1958 case CXN_INVALIDATE_NOTIFY:
1959 beiscsi_log(phba, KERN_ERR,
1960 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
1961 "BM_%d : Ignoring %s[%d] on CID : %d\n",
1962 cqe_desc[code], code, cid);
1963 break;
1964 case CXN_KILLED_HDR_DIGEST_ERR:
1965 case SOL_CMD_KILLED_DATA_DIGEST_ERR:
1966 beiscsi_log(phba, KERN_ERR,
1967 BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
1968 "BM_%d : Cmd Notification %s[%d] on CID : %d\n",
1969 cqe_desc[code], code, cid);
1970 break;
1971 case CMD_KILLED_INVALID_STATSN_RCVD:
1972 case CMD_KILLED_INVALID_R2T_RCVD:
1973 case CMD_CXN_KILLED_LUN_INVALID:
1974 case CMD_CXN_KILLED_ICD_INVALID:
1975 case CMD_CXN_KILLED_ITT_INVALID:
1976 case CMD_CXN_KILLED_SEQ_OUTOFORDER:
1977 case CMD_CXN_KILLED_INVALID_DATASN_RCVD:
1978 beiscsi_log(phba, KERN_ERR,
1979 BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
1980 "BM_%d : Cmd Notification %s[%d] on CID : %d\n",
1981 cqe_desc[code], code, cid);
1982 break;
1983 case UNSOL_DATA_DIGEST_ERROR_NOTIFY:
1984 beiscsi_log(phba, KERN_ERR,
1985 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
1986 "BM_%d : Dropping %s[%d] on DPDU ring on CID : %d\n",
1987 cqe_desc[code], code, cid);
1988 spin_lock_bh(&phba->async_pdu_lock);
1989 /* driver consumes the entry and drops the contents */
1990 beiscsi_hdq_process_compl(beiscsi_conn,
1991 (struct i_t_dpdu_cqe *)sol);
1992 spin_unlock_bh(&phba->async_pdu_lock);
1993 break;
1994 case CXN_KILLED_PDU_SIZE_EXCEEDS_DSL:
1995 case CXN_KILLED_BURST_LEN_MISMATCH:
1996 case CXN_KILLED_AHS_RCVD:
1997 case CXN_KILLED_UNKNOWN_HDR:
1998 case CXN_KILLED_STALE_ITT_TTT_RCVD:
1999 case CXN_KILLED_INVALID_ITT_TTT_RCVD:
2000 case CXN_KILLED_TIMED_OUT:
2001 case CXN_KILLED_FIN_RCVD:
2002 case CXN_KILLED_RST_SENT:
2003 case CXN_KILLED_RST_RCVD:
2004 case CXN_KILLED_BAD_UNSOL_PDU_RCVD:
2005 case CXN_KILLED_BAD_WRB_INDEX_ERROR:
2006 case CXN_KILLED_OVER_RUN_RESIDUAL:
2007 case CXN_KILLED_UNDER_RUN_RESIDUAL:
2008 case CXN_KILLED_CMND_DATA_NOT_ON_SAME_CONN:
2009 beiscsi_log(phba, KERN_ERR,
2010 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
2011 "BM_%d : Event %s[%d] received on CID : %d\n",
2012 cqe_desc[code], code, cid);
2013 if (beiscsi_conn)
2014 iscsi_conn_failure(beiscsi_conn->conn,
2015 ISCSI_ERR_CONN_FAILED);
2016 break;
2017 default:
2018 beiscsi_log(phba, KERN_ERR,
2019 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
2020 "BM_%d : Invalid CQE Event Received Code : %d"
2021 "CID 0x%x...\n",
2022 code, cid);
2023 break;
2024 }
2025
2026 proc_next_cqe:
2027 AMAP_SET_BITS(struct amap_sol_cqe, valid, sol, 0);
2028 queue_tail_inc(cq);
2029 sol = queue_tail_node(cq);
2030 num_processed++;
2031 if (total == budget)
2032 break;
2033 }
2034
2035 hwi_ring_cq_db(phba, cq->id, num_processed, 1);
2036 return total;
2037 }
2038
2039 static int be_iopoll(struct irq_poll *iop, int budget)
2040 {
2041 unsigned int ret, io_events;
2042 struct beiscsi_hba *phba;
2043 struct be_eq_obj *pbe_eq;
2044 struct be_eq_entry *eqe = NULL;
2045 struct be_queue_info *eq;
2046
2047 pbe_eq = container_of(iop, struct be_eq_obj, iopoll);
2048 phba = pbe_eq->phba;
2049 if (beiscsi_hba_in_error(phba)) {
2050 irq_poll_complete(iop);
2051 return 0;
2052 }
2053
2054 io_events = 0;
2055 eq = &pbe_eq->q;
2056 eqe = queue_tail_node(eq);
2057 while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32] &
2058 EQE_VALID_MASK) {
2059 AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
2060 queue_tail_inc(eq);
2061 eqe = queue_tail_node(eq);
2062 io_events++;
2063 }
2064 hwi_ring_eq_db(phba, eq->id, 1, io_events, 0, 1);
2065
2066 ret = beiscsi_process_cq(pbe_eq, budget);
2067 pbe_eq->cq_count += ret;
2068 if (ret < budget) {
2069 irq_poll_complete(iop);
2070 beiscsi_log(phba, KERN_INFO,
2071 BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
2072 "BM_%d : rearm pbe_eq->q.id =%d ret %d\n",
2073 pbe_eq->q.id, ret);
2074 if (!beiscsi_hba_in_error(phba))
2075 hwi_ring_eq_db(phba, pbe_eq->q.id, 0, 0, 1, 1);
2076 }
2077 return ret;
2078 }
2079
2080 static void
2081 hwi_write_sgl_v2(struct iscsi_wrb *pwrb, struct scatterlist *sg,
2082 unsigned int num_sg, struct beiscsi_io_task *io_task)
2083 {
2084 struct iscsi_sge *psgl;
2085 unsigned int sg_len, index;
2086 unsigned int sge_len = 0;
2087 unsigned long long addr;
2088 struct scatterlist *l_sg;
2089 unsigned int offset;
2090
2091 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, iscsi_bhs_addr_lo, pwrb,
2092 io_task->bhs_pa.u.a32.address_lo);
2093 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, iscsi_bhs_addr_hi, pwrb,
2094 io_task->bhs_pa.u.a32.address_hi);
2095
2096 l_sg = sg;
2097 for (index = 0; (index < num_sg) && (index < 2); index++,
2098 sg = sg_next(sg)) {
2099 if (index == 0) {
2100 sg_len = sg_dma_len(sg);
2101 addr = (u64) sg_dma_address(sg);
2102 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
2103 sge0_addr_lo, pwrb,
2104 lower_32_bits(addr));
2105 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
2106 sge0_addr_hi, pwrb,
2107 upper_32_bits(addr));
2108 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
2109 sge0_len, pwrb,
2110 sg_len);
2111 sge_len = sg_len;
2112 } else {
2113 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge1_r2t_offset,
2114 pwrb, sge_len);
2115 sg_len = sg_dma_len(sg);
2116 addr = (u64) sg_dma_address(sg);
2117 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
2118 sge1_addr_lo, pwrb,
2119 lower_32_bits(addr));
2120 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
2121 sge1_addr_hi, pwrb,
2122 upper_32_bits(addr));
2123 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
2124 sge1_len, pwrb,
2125 sg_len);
2126 }
2127 }
2128 psgl = (struct iscsi_sge *)io_task->psgl_handle->pfrag;
2129 memset(psgl, 0, sizeof(*psgl) * BE2_SGE);
2130
2131 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, io_task->bhs_len - 2);
2132
2133 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
2134 io_task->bhs_pa.u.a32.address_hi);
2135 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
2136 io_task->bhs_pa.u.a32.address_lo);
2137
2138 if (num_sg == 1) {
2139 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge0_last, pwrb,
2140 1);
2141 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge1_last, pwrb,
2142 0);
2143 } else if (num_sg == 2) {
2144 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge0_last, pwrb,
2145 0);
2146 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge1_last, pwrb,
2147 1);
2148 } else {
2149 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge0_last, pwrb,
2150 0);
2151 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge1_last, pwrb,
2152 0);
2153 }
2154
2155 sg = l_sg;
2156 psgl++;
2157 psgl++;
2158 offset = 0;
2159 for (index = 0; index < num_sg; index++, sg = sg_next(sg), psgl++) {
2160 sg_len = sg_dma_len(sg);
2161 addr = (u64) sg_dma_address(sg);
2162 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
2163 lower_32_bits(addr));
2164 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
2165 upper_32_bits(addr));
2166 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, sg_len);
2167 AMAP_SET_BITS(struct amap_iscsi_sge, sge_offset, psgl, offset);
2168 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 0);
2169 offset += sg_len;
2170 }
2171 psgl--;
2172 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 1);
2173 }
2174
2175 static void
2176 hwi_write_sgl(struct iscsi_wrb *pwrb, struct scatterlist *sg,
2177 unsigned int num_sg, struct beiscsi_io_task *io_task)
2178 {
2179 struct iscsi_sge *psgl;
2180 unsigned int sg_len, index;
2181 unsigned int sge_len = 0;
2182 unsigned long long addr;
2183 struct scatterlist *l_sg;
2184 unsigned int offset;
2185
2186 AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_lo, pwrb,
2187 io_task->bhs_pa.u.a32.address_lo);
2188 AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_hi, pwrb,
2189 io_task->bhs_pa.u.a32.address_hi);
2190
2191 l_sg = sg;
2192 for (index = 0; (index < num_sg) && (index < 2); index++,
2193 sg = sg_next(sg)) {
2194 if (index == 0) {
2195 sg_len = sg_dma_len(sg);
2196 addr = (u64) sg_dma_address(sg);
2197 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_lo, pwrb,
2198 ((u32)(addr & 0xFFFFFFFF)));
2199 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_hi, pwrb,
2200 ((u32)(addr >> 32)));
2201 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_len, pwrb,
2202 sg_len);
2203 sge_len = sg_len;
2204 } else {
2205 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_r2t_offset,
2206 pwrb, sge_len);
2207 sg_len = sg_dma_len(sg);
2208 addr = (u64) sg_dma_address(sg);
2209 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_addr_lo, pwrb,
2210 ((u32)(addr & 0xFFFFFFFF)));
2211 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_addr_hi, pwrb,
2212 ((u32)(addr >> 32)));
2213 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_len, pwrb,
2214 sg_len);
2215 }
2216 }
2217 psgl = (struct iscsi_sge *)io_task->psgl_handle->pfrag;
2218 memset(psgl, 0, sizeof(*psgl) * BE2_SGE);
2219
2220 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, io_task->bhs_len - 2);
2221
2222 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
2223 io_task->bhs_pa.u.a32.address_hi);
2224 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
2225 io_task->bhs_pa.u.a32.address_lo);
2226
2227 if (num_sg == 1) {
2228 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb,
2229 1);
2230 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_last, pwrb,
2231 0);
2232 } else if (num_sg == 2) {
2233 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb,
2234 0);
2235 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_last, pwrb,
2236 1);
2237 } else {
2238 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb,
2239 0);
2240 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_last, pwrb,
2241 0);
2242 }
2243 sg = l_sg;
2244 psgl++;
2245 psgl++;
2246 offset = 0;
2247 for (index = 0; index < num_sg; index++, sg = sg_next(sg), psgl++) {
2248 sg_len = sg_dma_len(sg);
2249 addr = (u64) sg_dma_address(sg);
2250 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
2251 (addr & 0xFFFFFFFF));
2252 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
2253 (addr >> 32));
2254 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, sg_len);
2255 AMAP_SET_BITS(struct amap_iscsi_sge, sge_offset, psgl, offset);
2256 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 0);
2257 offset += sg_len;
2258 }
2259 psgl--;
2260 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 1);
2261 }
2262
2263 /**
2264 * hwi_write_buffer()- Populate the WRB with task info
2265 * @pwrb: ptr to the WRB entry
2266 * @task: iscsi task which is to be executed
2267 **/
2268 static int hwi_write_buffer(struct iscsi_wrb *pwrb, struct iscsi_task *task)
2269 {
2270 struct iscsi_sge *psgl;
2271 struct beiscsi_io_task *io_task = task->dd_data;
2272 struct beiscsi_conn *beiscsi_conn = io_task->conn;
2273 struct beiscsi_hba *phba = beiscsi_conn->phba;
2274 uint8_t dsp_value = 0;
2275
2276 io_task->bhs_len = sizeof(struct be_nonio_bhs) - 2;
2277 AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_lo, pwrb,
2278 io_task->bhs_pa.u.a32.address_lo);
2279 AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_hi, pwrb,
2280 io_task->bhs_pa.u.a32.address_hi);
2281
2282 if (task->data) {
2283
2284 /* Check for the data_count */
2285 dsp_value = (task->data_count) ? 1 : 0;
2286
2287 if (is_chip_be2_be3r(phba))
2288 AMAP_SET_BITS(struct amap_iscsi_wrb, dsp,
2289 pwrb, dsp_value);
2290 else
2291 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, dsp,
2292 pwrb, dsp_value);
2293
2294 /* Map addr only if there is data_count */
2295 if (dsp_value) {
2296 io_task->mtask_addr = pci_map_single(phba->pcidev,
2297 task->data,
2298 task->data_count,
2299 PCI_DMA_TODEVICE);
2300 if (pci_dma_mapping_error(phba->pcidev,
2301 io_task->mtask_addr))
2302 return -ENOMEM;
2303 io_task->mtask_data_count = task->data_count;
2304 } else
2305 io_task->mtask_addr = 0;
2306
2307 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_lo, pwrb,
2308 lower_32_bits(io_task->mtask_addr));
2309 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_hi, pwrb,
2310 upper_32_bits(io_task->mtask_addr));
2311 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_len, pwrb,
2312 task->data_count);
2313
2314 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb, 1);
2315 } else {
2316 AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 0);
2317 io_task->mtask_addr = 0;
2318 }
2319
2320 psgl = (struct iscsi_sge *)io_task->psgl_handle->pfrag;
2321
2322 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, io_task->bhs_len);
2323
2324 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
2325 io_task->bhs_pa.u.a32.address_hi);
2326 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
2327 io_task->bhs_pa.u.a32.address_lo);
2328 if (task->data) {
2329 psgl++;
2330 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl, 0);
2331 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl, 0);
2332 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, 0);
2333 AMAP_SET_BITS(struct amap_iscsi_sge, sge_offset, psgl, 0);
2334 AMAP_SET_BITS(struct amap_iscsi_sge, rsvd0, psgl, 0);
2335 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 0);
2336
2337 psgl++;
2338 if (task->data) {
2339 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
2340 lower_32_bits(io_task->mtask_addr));
2341 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
2342 upper_32_bits(io_task->mtask_addr));
2343 }
2344 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, 0x106);
2345 }
2346 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 1);
2347 return 0;
2348 }
2349
2350 /**
2351 * beiscsi_find_mem_req()- Find mem needed
2352 * @phba: ptr to HBA struct
2353 **/
2354 static void beiscsi_find_mem_req(struct beiscsi_hba *phba)
2355 {
2356 uint8_t mem_descr_index, ulp_num;
2357 unsigned int num_async_pdu_buf_pages;
2358 unsigned int num_async_pdu_data_pages, wrb_sz_per_cxn;
2359 unsigned int num_async_pdu_buf_sgl_pages, num_async_pdu_data_sgl_pages;
2360
2361 phba->params.hwi_ws_sz = sizeof(struct hwi_controller);
2362
2363 phba->mem_req[ISCSI_MEM_GLOBAL_HEADER] = 2 *
2364 BE_ISCSI_PDU_HEADER_SIZE;
2365 phba->mem_req[HWI_MEM_ADDN_CONTEXT] =
2366 sizeof(struct hwi_context_memory);
2367
2368
2369 phba->mem_req[HWI_MEM_WRB] = sizeof(struct iscsi_wrb)
2370 * (phba->params.wrbs_per_cxn)
2371 * phba->params.cxns_per_ctrl;
2372 wrb_sz_per_cxn = sizeof(struct wrb_handle) *
2373 (phba->params.wrbs_per_cxn);
2374 phba->mem_req[HWI_MEM_WRBH] = roundup_pow_of_two((wrb_sz_per_cxn) *
2375 phba->params.cxns_per_ctrl);
2376
2377 phba->mem_req[HWI_MEM_SGLH] = sizeof(struct sgl_handle) *
2378 phba->params.icds_per_ctrl;
2379 phba->mem_req[HWI_MEM_SGE] = sizeof(struct iscsi_sge) *
2380 phba->params.num_sge_per_io * phba->params.icds_per_ctrl;
2381 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
2382 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
2383
2384 num_async_pdu_buf_sgl_pages =
2385 PAGES_REQUIRED(BEISCSI_ASYNC_HDQ_SIZE(
2386 phba, ulp_num) *
2387 sizeof(struct phys_addr));
2388
2389 num_async_pdu_buf_pages =
2390 PAGES_REQUIRED(BEISCSI_ASYNC_HDQ_SIZE(
2391 phba, ulp_num) *
2392 phba->params.defpdu_hdr_sz);
2393
2394 num_async_pdu_data_pages =
2395 PAGES_REQUIRED(BEISCSI_ASYNC_HDQ_SIZE(
2396 phba, ulp_num) *
2397 phba->params.defpdu_data_sz);
2398
2399 num_async_pdu_data_sgl_pages =
2400 PAGES_REQUIRED(BEISCSI_ASYNC_HDQ_SIZE(
2401 phba, ulp_num) *
2402 sizeof(struct phys_addr));
2403
2404 mem_descr_index = (HWI_MEM_TEMPLATE_HDR_ULP0 +
2405 (ulp_num * MEM_DESCR_OFFSET));
2406 phba->mem_req[mem_descr_index] =
2407 BEISCSI_GET_CID_COUNT(phba, ulp_num) *
2408 BEISCSI_TEMPLATE_HDR_PER_CXN_SIZE;
2409
2410 mem_descr_index = (HWI_MEM_ASYNC_HEADER_BUF_ULP0 +
2411 (ulp_num * MEM_DESCR_OFFSET));
2412 phba->mem_req[mem_descr_index] =
2413 num_async_pdu_buf_pages *
2414 PAGE_SIZE;
2415
2416 mem_descr_index = (HWI_MEM_ASYNC_DATA_BUF_ULP0 +
2417 (ulp_num * MEM_DESCR_OFFSET));
2418 phba->mem_req[mem_descr_index] =
2419 num_async_pdu_data_pages *
2420 PAGE_SIZE;
2421
2422 mem_descr_index = (HWI_MEM_ASYNC_HEADER_RING_ULP0 +
2423 (ulp_num * MEM_DESCR_OFFSET));
2424 phba->mem_req[mem_descr_index] =
2425 num_async_pdu_buf_sgl_pages *
2426 PAGE_SIZE;
2427
2428 mem_descr_index = (HWI_MEM_ASYNC_DATA_RING_ULP0 +
2429 (ulp_num * MEM_DESCR_OFFSET));
2430 phba->mem_req[mem_descr_index] =
2431 num_async_pdu_data_sgl_pages *
2432 PAGE_SIZE;
2433
2434 mem_descr_index = (HWI_MEM_ASYNC_HEADER_HANDLE_ULP0 +
2435 (ulp_num * MEM_DESCR_OFFSET));
2436 phba->mem_req[mem_descr_index] =
2437 BEISCSI_ASYNC_HDQ_SIZE(phba, ulp_num) *
2438 sizeof(struct hd_async_handle);
2439
2440 mem_descr_index = (HWI_MEM_ASYNC_DATA_HANDLE_ULP0 +
2441 (ulp_num * MEM_DESCR_OFFSET));
2442 phba->mem_req[mem_descr_index] =
2443 BEISCSI_ASYNC_HDQ_SIZE(phba, ulp_num) *
2444 sizeof(struct hd_async_handle);
2445
2446 mem_descr_index = (HWI_MEM_ASYNC_PDU_CONTEXT_ULP0 +
2447 (ulp_num * MEM_DESCR_OFFSET));
2448 phba->mem_req[mem_descr_index] =
2449 sizeof(struct hd_async_context) +
2450 (BEISCSI_ASYNC_HDQ_SIZE(phba, ulp_num) *
2451 sizeof(struct hd_async_entry));
2452 }
2453 }
2454 }
2455
2456 static int beiscsi_alloc_mem(struct beiscsi_hba *phba)
2457 {
2458 dma_addr_t bus_add;
2459 struct hwi_controller *phwi_ctrlr;
2460 struct be_mem_descriptor *mem_descr;
2461 struct mem_array *mem_arr, *mem_arr_orig;
2462 unsigned int i, j, alloc_size, curr_alloc_size;
2463
2464 phba->phwi_ctrlr = kzalloc(phba->params.hwi_ws_sz, GFP_KERNEL);
2465 if (!phba->phwi_ctrlr)
2466 return -ENOMEM;
2467
2468 /* Allocate memory for wrb_context */
2469 phwi_ctrlr = phba->phwi_ctrlr;
2470 phwi_ctrlr->wrb_context = kzalloc(sizeof(struct hwi_wrb_context) *
2471 phba->params.cxns_per_ctrl,
2472 GFP_KERNEL);
2473 if (!phwi_ctrlr->wrb_context) {
2474 kfree(phba->phwi_ctrlr);
2475 return -ENOMEM;
2476 }
2477
2478 phba->init_mem = kcalloc(SE_MEM_MAX, sizeof(*mem_descr),
2479 GFP_KERNEL);
2480 if (!phba->init_mem) {
2481 kfree(phwi_ctrlr->wrb_context);
2482 kfree(phba->phwi_ctrlr);
2483 return -ENOMEM;
2484 }
2485
2486 mem_arr_orig = kmalloc(sizeof(*mem_arr_orig) * BEISCSI_MAX_FRAGS_INIT,
2487 GFP_KERNEL);
2488 if (!mem_arr_orig) {
2489 kfree(phba->init_mem);
2490 kfree(phwi_ctrlr->wrb_context);
2491 kfree(phba->phwi_ctrlr);
2492 return -ENOMEM;
2493 }
2494
2495 mem_descr = phba->init_mem;
2496 for (i = 0; i < SE_MEM_MAX; i++) {
2497 if (!phba->mem_req[i]) {
2498 mem_descr->mem_array = NULL;
2499 mem_descr++;
2500 continue;
2501 }
2502
2503 j = 0;
2504 mem_arr = mem_arr_orig;
2505 alloc_size = phba->mem_req[i];
2506 memset(mem_arr, 0, sizeof(struct mem_array) *
2507 BEISCSI_MAX_FRAGS_INIT);
2508 curr_alloc_size = min(be_max_phys_size * 1024, alloc_size);
2509 do {
2510 mem_arr->virtual_address = pci_alloc_consistent(
2511 phba->pcidev,
2512 curr_alloc_size,
2513 &bus_add);
2514 if (!mem_arr->virtual_address) {
2515 if (curr_alloc_size <= BE_MIN_MEM_SIZE)
2516 goto free_mem;
2517 if (curr_alloc_size -
2518 rounddown_pow_of_two(curr_alloc_size))
2519 curr_alloc_size = rounddown_pow_of_two
2520 (curr_alloc_size);
2521 else
2522 curr_alloc_size = curr_alloc_size / 2;
2523 } else {
2524 mem_arr->bus_address.u.
2525 a64.address = (__u64) bus_add;
2526 mem_arr->size = curr_alloc_size;
2527 alloc_size -= curr_alloc_size;
2528 curr_alloc_size = min(be_max_phys_size *
2529 1024, alloc_size);
2530 j++;
2531 mem_arr++;
2532 }
2533 } while (alloc_size);
2534 mem_descr->num_elements = j;
2535 mem_descr->size_in_bytes = phba->mem_req[i];
2536 mem_descr->mem_array = kmalloc(sizeof(*mem_arr) * j,
2537 GFP_KERNEL);
2538 if (!mem_descr->mem_array)
2539 goto free_mem;
2540
2541 memcpy(mem_descr->mem_array, mem_arr_orig,
2542 sizeof(struct mem_array) * j);
2543 mem_descr++;
2544 }
2545 kfree(mem_arr_orig);
2546 return 0;
2547 free_mem:
2548 mem_descr->num_elements = j;
2549 while ((i) || (j)) {
2550 for (j = mem_descr->num_elements; j > 0; j--) {
2551 pci_free_consistent(phba->pcidev,
2552 mem_descr->mem_array[j - 1].size,
2553 mem_descr->mem_array[j - 1].
2554 virtual_address,
2555 (unsigned long)mem_descr->
2556 mem_array[j - 1].
2557 bus_address.u.a64.address);
2558 }
2559 if (i) {
2560 i--;
2561 kfree(mem_descr->mem_array);
2562 mem_descr--;
2563 }
2564 }
2565 kfree(mem_arr_orig);
2566 kfree(phba->init_mem);
2567 kfree(phba->phwi_ctrlr->wrb_context);
2568 kfree(phba->phwi_ctrlr);
2569 return -ENOMEM;
2570 }
2571
2572 static int beiscsi_get_memory(struct beiscsi_hba *phba)
2573 {
2574 beiscsi_find_mem_req(phba);
2575 return beiscsi_alloc_mem(phba);
2576 }
2577
2578 static void iscsi_init_global_templates(struct beiscsi_hba *phba)
2579 {
2580 struct pdu_data_out *pdata_out;
2581 struct pdu_nop_out *pnop_out;
2582 struct be_mem_descriptor *mem_descr;
2583
2584 mem_descr = phba->init_mem;
2585 mem_descr += ISCSI_MEM_GLOBAL_HEADER;
2586 pdata_out =
2587 (struct pdu_data_out *)mem_descr->mem_array[0].virtual_address;
2588 memset(pdata_out, 0, BE_ISCSI_PDU_HEADER_SIZE);
2589
2590 AMAP_SET_BITS(struct amap_pdu_data_out, opcode, pdata_out,
2591 IIOC_SCSI_DATA);
2592
2593 pnop_out =
2594 (struct pdu_nop_out *)((unsigned char *)mem_descr->mem_array[0].
2595 virtual_address + BE_ISCSI_PDU_HEADER_SIZE);
2596
2597 memset(pnop_out, 0, BE_ISCSI_PDU_HEADER_SIZE);
2598 AMAP_SET_BITS(struct amap_pdu_nop_out, ttt, pnop_out, 0xFFFFFFFF);
2599 AMAP_SET_BITS(struct amap_pdu_nop_out, f_bit, pnop_out, 1);
2600 AMAP_SET_BITS(struct amap_pdu_nop_out, i_bit, pnop_out, 0);
2601 }
2602
2603 static int beiscsi_init_wrb_handle(struct beiscsi_hba *phba)
2604 {
2605 struct be_mem_descriptor *mem_descr_wrbh, *mem_descr_wrb;
2606 struct hwi_context_memory *phwi_ctxt;
2607 struct wrb_handle *pwrb_handle = NULL;
2608 struct hwi_controller *phwi_ctrlr;
2609 struct hwi_wrb_context *pwrb_context;
2610 struct iscsi_wrb *pwrb = NULL;
2611 unsigned int num_cxn_wrbh = 0;
2612 unsigned int num_cxn_wrb = 0, j, idx = 0, index;
2613
2614 mem_descr_wrbh = phba->init_mem;
2615 mem_descr_wrbh += HWI_MEM_WRBH;
2616
2617 mem_descr_wrb = phba->init_mem;
2618 mem_descr_wrb += HWI_MEM_WRB;
2619 phwi_ctrlr = phba->phwi_ctrlr;
2620
2621 /* Allocate memory for WRBQ */
2622 phwi_ctxt = phwi_ctrlr->phwi_ctxt;
2623 phwi_ctxt->be_wrbq = kzalloc(sizeof(struct be_queue_info) *
2624 phba->params.cxns_per_ctrl,
2625 GFP_KERNEL);
2626 if (!phwi_ctxt->be_wrbq) {
2627 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
2628 "BM_%d : WRBQ Mem Alloc Failed\n");
2629 return -ENOMEM;
2630 }
2631
2632 for (index = 0; index < phba->params.cxns_per_ctrl; index++) {
2633 pwrb_context = &phwi_ctrlr->wrb_context[index];
2634 pwrb_context->pwrb_handle_base =
2635 kzalloc(sizeof(struct wrb_handle *) *
2636 phba->params.wrbs_per_cxn, GFP_KERNEL);
2637 if (!pwrb_context->pwrb_handle_base) {
2638 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
2639 "BM_%d : Mem Alloc Failed. Failing to load\n");
2640 goto init_wrb_hndl_failed;
2641 }
2642 pwrb_context->pwrb_handle_basestd =
2643 kzalloc(sizeof(struct wrb_handle *) *
2644 phba->params.wrbs_per_cxn, GFP_KERNEL);
2645 if (!pwrb_context->pwrb_handle_basestd) {
2646 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
2647 "BM_%d : Mem Alloc Failed. Failing to load\n");
2648 goto init_wrb_hndl_failed;
2649 }
2650 if (!num_cxn_wrbh) {
2651 pwrb_handle =
2652 mem_descr_wrbh->mem_array[idx].virtual_address;
2653 num_cxn_wrbh = ((mem_descr_wrbh->mem_array[idx].size) /
2654 ((sizeof(struct wrb_handle)) *
2655 phba->params.wrbs_per_cxn));
2656 idx++;
2657 }
2658 pwrb_context->alloc_index = 0;
2659 pwrb_context->wrb_handles_available = 0;
2660 pwrb_context->free_index = 0;
2661
2662 if (num_cxn_wrbh) {
2663 for (j = 0; j < phba->params.wrbs_per_cxn; j++) {
2664 pwrb_context->pwrb_handle_base[j] = pwrb_handle;
2665 pwrb_context->pwrb_handle_basestd[j] =
2666 pwrb_handle;
2667 pwrb_context->wrb_handles_available++;
2668 pwrb_handle->wrb_index = j;
2669 pwrb_handle++;
2670 }
2671 num_cxn_wrbh--;
2672 }
2673 spin_lock_init(&pwrb_context->wrb_lock);
2674 }
2675 idx = 0;
2676 for (index = 0; index < phba->params.cxns_per_ctrl; index++) {
2677 pwrb_context = &phwi_ctrlr->wrb_context[index];
2678 if (!num_cxn_wrb) {
2679 pwrb = mem_descr_wrb->mem_array[idx].virtual_address;
2680 num_cxn_wrb = (mem_descr_wrb->mem_array[idx].size) /
2681 ((sizeof(struct iscsi_wrb) *
2682 phba->params.wrbs_per_cxn));
2683 idx++;
2684 }
2685
2686 if (num_cxn_wrb) {
2687 for (j = 0; j < phba->params.wrbs_per_cxn; j++) {
2688 pwrb_handle = pwrb_context->pwrb_handle_base[j];
2689 pwrb_handle->pwrb = pwrb;
2690 pwrb++;
2691 }
2692 num_cxn_wrb--;
2693 }
2694 }
2695 return 0;
2696 init_wrb_hndl_failed:
2697 for (j = index; j > 0; j--) {
2698 pwrb_context = &phwi_ctrlr->wrb_context[j];
2699 kfree(pwrb_context->pwrb_handle_base);
2700 kfree(pwrb_context->pwrb_handle_basestd);
2701 }
2702 return -ENOMEM;
2703 }
2704
2705 static int hwi_init_async_pdu_ctx(struct beiscsi_hba *phba)
2706 {
2707 uint8_t ulp_num;
2708 struct hwi_controller *phwi_ctrlr;
2709 struct hba_parameters *p = &phba->params;
2710 struct hd_async_context *pasync_ctx;
2711 struct hd_async_handle *pasync_header_h, *pasync_data_h;
2712 unsigned int index, idx, num_per_mem, num_async_data;
2713 struct be_mem_descriptor *mem_descr;
2714
2715 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
2716 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
2717 /* get async_ctx for each ULP */
2718 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2719 mem_descr += (HWI_MEM_ASYNC_PDU_CONTEXT_ULP0 +
2720 (ulp_num * MEM_DESCR_OFFSET));
2721
2722 phwi_ctrlr = phba->phwi_ctrlr;
2723 phwi_ctrlr->phwi_ctxt->pasync_ctx[ulp_num] =
2724 (struct hd_async_context *)
2725 mem_descr->mem_array[0].virtual_address;
2726
2727 pasync_ctx = phwi_ctrlr->phwi_ctxt->pasync_ctx[ulp_num];
2728 memset(pasync_ctx, 0, sizeof(*pasync_ctx));
2729
2730 pasync_ctx->async_entry =
2731 (struct hd_async_entry *)
2732 ((long unsigned int)pasync_ctx +
2733 sizeof(struct hd_async_context));
2734
2735 pasync_ctx->num_entries = BEISCSI_ASYNC_HDQ_SIZE(phba,
2736 ulp_num);
2737 /* setup header buffers */
2738 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2739 mem_descr += HWI_MEM_ASYNC_HEADER_BUF_ULP0 +
2740 (ulp_num * MEM_DESCR_OFFSET);
2741 if (mem_descr->mem_array[0].virtual_address) {
2742 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
2743 "BM_%d : hwi_init_async_pdu_ctx"
2744 " HWI_MEM_ASYNC_HEADER_BUF_ULP%d va=%p\n",
2745 ulp_num,
2746 mem_descr->mem_array[0].
2747 virtual_address);
2748 } else
2749 beiscsi_log(phba, KERN_WARNING,
2750 BEISCSI_LOG_INIT,
2751 "BM_%d : No Virtual address for ULP : %d\n",
2752 ulp_num);
2753
2754 pasync_ctx->async_header.pi = 0;
2755 pasync_ctx->async_header.buffer_size = p->defpdu_hdr_sz;
2756 pasync_ctx->async_header.va_base =
2757 mem_descr->mem_array[0].virtual_address;
2758
2759 pasync_ctx->async_header.pa_base.u.a64.address =
2760 mem_descr->mem_array[0].
2761 bus_address.u.a64.address;
2762
2763 /* setup header buffer sgls */
2764 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2765 mem_descr += HWI_MEM_ASYNC_HEADER_RING_ULP0 +
2766 (ulp_num * MEM_DESCR_OFFSET);
2767 if (mem_descr->mem_array[0].virtual_address) {
2768 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
2769 "BM_%d : hwi_init_async_pdu_ctx"
2770 " HWI_MEM_ASYNC_HEADER_RING_ULP%d va=%p\n",
2771 ulp_num,
2772 mem_descr->mem_array[0].
2773 virtual_address);
2774 } else
2775 beiscsi_log(phba, KERN_WARNING,
2776 BEISCSI_LOG_INIT,
2777 "BM_%d : No Virtual address for ULP : %d\n",
2778 ulp_num);
2779
2780 pasync_ctx->async_header.ring_base =
2781 mem_descr->mem_array[0].virtual_address;
2782
2783 /* setup header buffer handles */
2784 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2785 mem_descr += HWI_MEM_ASYNC_HEADER_HANDLE_ULP0 +
2786 (ulp_num * MEM_DESCR_OFFSET);
2787 if (mem_descr->mem_array[0].virtual_address) {
2788 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
2789 "BM_%d : hwi_init_async_pdu_ctx"
2790 " HWI_MEM_ASYNC_HEADER_HANDLE_ULP%d va=%p\n",
2791 ulp_num,
2792 mem_descr->mem_array[0].
2793 virtual_address);
2794 } else
2795 beiscsi_log(phba, KERN_WARNING,
2796 BEISCSI_LOG_INIT,
2797 "BM_%d : No Virtual address for ULP : %d\n",
2798 ulp_num);
2799
2800 pasync_ctx->async_header.handle_base =
2801 mem_descr->mem_array[0].virtual_address;
2802
2803 /* setup data buffer sgls */
2804 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2805 mem_descr += HWI_MEM_ASYNC_DATA_RING_ULP0 +
2806 (ulp_num * MEM_DESCR_OFFSET);
2807 if (mem_descr->mem_array[0].virtual_address) {
2808 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
2809 "BM_%d : hwi_init_async_pdu_ctx"
2810 " HWI_MEM_ASYNC_DATA_RING_ULP%d va=%p\n",
2811 ulp_num,
2812 mem_descr->mem_array[0].
2813 virtual_address);
2814 } else
2815 beiscsi_log(phba, KERN_WARNING,
2816 BEISCSI_LOG_INIT,
2817 "BM_%d : No Virtual address for ULP : %d\n",
2818 ulp_num);
2819
2820 pasync_ctx->async_data.ring_base =
2821 mem_descr->mem_array[0].virtual_address;
2822
2823 /* setup data buffer handles */
2824 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2825 mem_descr += HWI_MEM_ASYNC_DATA_HANDLE_ULP0 +
2826 (ulp_num * MEM_DESCR_OFFSET);
2827 if (!mem_descr->mem_array[0].virtual_address)
2828 beiscsi_log(phba, KERN_WARNING,
2829 BEISCSI_LOG_INIT,
2830 "BM_%d : No Virtual address for ULP : %d\n",
2831 ulp_num);
2832
2833 pasync_ctx->async_data.handle_base =
2834 mem_descr->mem_array[0].virtual_address;
2835
2836 pasync_header_h =
2837 (struct hd_async_handle *)
2838 pasync_ctx->async_header.handle_base;
2839 pasync_data_h =
2840 (struct hd_async_handle *)
2841 pasync_ctx->async_data.handle_base;
2842
2843 /* setup data buffers */
2844 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2845 mem_descr += HWI_MEM_ASYNC_DATA_BUF_ULP0 +
2846 (ulp_num * MEM_DESCR_OFFSET);
2847 if (mem_descr->mem_array[0].virtual_address) {
2848 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
2849 "BM_%d : hwi_init_async_pdu_ctx"
2850 " HWI_MEM_ASYNC_DATA_BUF_ULP%d va=%p\n",
2851 ulp_num,
2852 mem_descr->mem_array[0].
2853 virtual_address);
2854 } else
2855 beiscsi_log(phba, KERN_WARNING,
2856 BEISCSI_LOG_INIT,
2857 "BM_%d : No Virtual address for ULP : %d\n",
2858 ulp_num);
2859
2860 idx = 0;
2861 pasync_ctx->async_data.pi = 0;
2862 pasync_ctx->async_data.buffer_size = p->defpdu_data_sz;
2863 pasync_ctx->async_data.va_base =
2864 mem_descr->mem_array[idx].virtual_address;
2865 pasync_ctx->async_data.pa_base.u.a64.address =
2866 mem_descr->mem_array[idx].
2867 bus_address.u.a64.address;
2868
2869 num_async_data = ((mem_descr->mem_array[idx].size) /
2870 phba->params.defpdu_data_sz);
2871 num_per_mem = 0;
2872
2873 for (index = 0; index < BEISCSI_ASYNC_HDQ_SIZE
2874 (phba, ulp_num); index++) {
2875 pasync_header_h->cri = -1;
2876 pasync_header_h->is_header = 1;
2877 pasync_header_h->index = index;
2878 INIT_LIST_HEAD(&pasync_header_h->link);
2879 pasync_header_h->pbuffer =
2880 (void *)((unsigned long)
2881 (pasync_ctx->
2882 async_header.va_base) +
2883 (p->defpdu_hdr_sz * index));
2884
2885 pasync_header_h->pa.u.a64.address =
2886 pasync_ctx->async_header.pa_base.u.a64.
2887 address + (p->defpdu_hdr_sz * index);
2888
2889 pasync_ctx->async_entry[index].header =
2890 pasync_header_h;
2891 pasync_header_h++;
2892 INIT_LIST_HEAD(&pasync_ctx->async_entry[index].
2893 wq.list);
2894
2895 pasync_data_h->cri = -1;
2896 pasync_data_h->is_header = 0;
2897 pasync_data_h->index = index;
2898 INIT_LIST_HEAD(&pasync_data_h->link);
2899
2900 if (!num_async_data) {
2901 num_per_mem = 0;
2902 idx++;
2903 pasync_ctx->async_data.va_base =
2904 mem_descr->mem_array[idx].
2905 virtual_address;
2906 pasync_ctx->async_data.pa_base.u.
2907 a64.address =
2908 mem_descr->mem_array[idx].
2909 bus_address.u.a64.address;
2910 num_async_data =
2911 ((mem_descr->mem_array[idx].
2912 size) /
2913 phba->params.defpdu_data_sz);
2914 }
2915 pasync_data_h->pbuffer =
2916 (void *)((unsigned long)
2917 (pasync_ctx->async_data.va_base) +
2918 (p->defpdu_data_sz * num_per_mem));
2919
2920 pasync_data_h->pa.u.a64.address =
2921 pasync_ctx->async_data.pa_base.u.a64.
2922 address + (p->defpdu_data_sz *
2923 num_per_mem);
2924 num_per_mem++;
2925 num_async_data--;
2926
2927 pasync_ctx->async_entry[index].data =
2928 pasync_data_h;
2929 pasync_data_h++;
2930 }
2931 }
2932 }
2933
2934 return 0;
2935 }
2936
2937 static int
2938 be_sgl_create_contiguous(void *virtual_address,
2939 u64 physical_address, u32 length,
2940 struct be_dma_mem *sgl)
2941 {
2942 WARN_ON(!virtual_address);
2943 WARN_ON(!physical_address);
2944 WARN_ON(!length);
2945 WARN_ON(!sgl);
2946
2947 sgl->va = virtual_address;
2948 sgl->dma = (unsigned long)physical_address;
2949 sgl->size = length;
2950
2951 return 0;
2952 }
2953
2954 static void be_sgl_destroy_contiguous(struct be_dma_mem *sgl)
2955 {
2956 memset(sgl, 0, sizeof(*sgl));
2957 }
2958
2959 static void
2960 hwi_build_be_sgl_arr(struct beiscsi_hba *phba,
2961 struct mem_array *pmem, struct be_dma_mem *sgl)
2962 {
2963 if (sgl->va)
2964 be_sgl_destroy_contiguous(sgl);
2965
2966 be_sgl_create_contiguous(pmem->virtual_address,
2967 pmem->bus_address.u.a64.address,
2968 pmem->size, sgl);
2969 }
2970
2971 static void
2972 hwi_build_be_sgl_by_offset(struct beiscsi_hba *phba,
2973 struct mem_array *pmem, struct be_dma_mem *sgl)
2974 {
2975 if (sgl->va)
2976 be_sgl_destroy_contiguous(sgl);
2977
2978 be_sgl_create_contiguous((unsigned char *)pmem->virtual_address,
2979 pmem->bus_address.u.a64.address,
2980 pmem->size, sgl);
2981 }
2982
2983 static int be_fill_queue(struct be_queue_info *q,
2984 u16 len, u16 entry_size, void *vaddress)
2985 {
2986 struct be_dma_mem *mem = &q->dma_mem;
2987
2988 memset(q, 0, sizeof(*q));
2989 q->len = len;
2990 q->entry_size = entry_size;
2991 mem->size = len * entry_size;
2992 mem->va = vaddress;
2993 if (!mem->va)
2994 return -ENOMEM;
2995 memset(mem->va, 0, mem->size);
2996 return 0;
2997 }
2998
2999 static int beiscsi_create_eqs(struct beiscsi_hba *phba,
3000 struct hwi_context_memory *phwi_context)
3001 {
3002 int ret = -ENOMEM, eq_for_mcc;
3003 unsigned int i, num_eq_pages;
3004 struct be_queue_info *eq;
3005 struct be_dma_mem *mem;
3006 void *eq_vaddress;
3007 dma_addr_t paddr;
3008
3009 num_eq_pages = PAGES_REQUIRED(phba->params.num_eq_entries * \
3010 sizeof(struct be_eq_entry));
3011
3012 if (phba->pcidev->msix_enabled)
3013 eq_for_mcc = 1;
3014 else
3015 eq_for_mcc = 0;
3016 for (i = 0; i < (phba->num_cpus + eq_for_mcc); i++) {
3017 eq = &phwi_context->be_eq[i].q;
3018 mem = &eq->dma_mem;
3019 phwi_context->be_eq[i].phba = phba;
3020 eq_vaddress = pci_alloc_consistent(phba->pcidev,
3021 num_eq_pages * PAGE_SIZE,
3022 &paddr);
3023 if (!eq_vaddress) {
3024 ret = -ENOMEM;
3025 goto create_eq_error;
3026 }
3027
3028 mem->va = eq_vaddress;
3029 ret = be_fill_queue(eq, phba->params.num_eq_entries,
3030 sizeof(struct be_eq_entry), eq_vaddress);
3031 if (ret) {
3032 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3033 "BM_%d : be_fill_queue Failed for EQ\n");
3034 goto create_eq_error;
3035 }
3036
3037 mem->dma = paddr;
3038 ret = beiscsi_cmd_eq_create(&phba->ctrl, eq,
3039 BEISCSI_EQ_DELAY_DEF);
3040 if (ret) {
3041 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3042 "BM_%d : beiscsi_cmd_eq_create"
3043 "Failed for EQ\n");
3044 goto create_eq_error;
3045 }
3046
3047 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3048 "BM_%d : eqid = %d\n",
3049 phwi_context->be_eq[i].q.id);
3050 }
3051 return 0;
3052
3053 create_eq_error:
3054 for (i = 0; i < (phba->num_cpus + eq_for_mcc); i++) {
3055 eq = &phwi_context->be_eq[i].q;
3056 mem = &eq->dma_mem;
3057 if (mem->va)
3058 pci_free_consistent(phba->pcidev, num_eq_pages
3059 * PAGE_SIZE,
3060 mem->va, mem->dma);
3061 }
3062 return ret;
3063 }
3064
3065 static int beiscsi_create_cqs(struct beiscsi_hba *phba,
3066 struct hwi_context_memory *phwi_context)
3067 {
3068 unsigned int i, num_cq_pages;
3069 struct be_queue_info *cq, *eq;
3070 struct be_dma_mem *mem;
3071 struct be_eq_obj *pbe_eq;
3072 void *cq_vaddress;
3073 int ret = -ENOMEM;
3074 dma_addr_t paddr;
3075
3076 num_cq_pages = PAGES_REQUIRED(phba->params.num_cq_entries * \
3077 sizeof(struct sol_cqe));
3078
3079 for (i = 0; i < phba->num_cpus; i++) {
3080 cq = &phwi_context->be_cq[i];
3081 eq = &phwi_context->be_eq[i].q;
3082 pbe_eq = &phwi_context->be_eq[i];
3083 pbe_eq->cq = cq;
3084 pbe_eq->phba = phba;
3085 mem = &cq->dma_mem;
3086 cq_vaddress = pci_alloc_consistent(phba->pcidev,
3087 num_cq_pages * PAGE_SIZE,
3088 &paddr);
3089 if (!cq_vaddress) {
3090 ret = -ENOMEM;
3091 goto create_cq_error;
3092 }
3093
3094 ret = be_fill_queue(cq, phba->params.num_cq_entries,
3095 sizeof(struct sol_cqe), cq_vaddress);
3096 if (ret) {
3097 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3098 "BM_%d : be_fill_queue Failed "
3099 "for ISCSI CQ\n");
3100 goto create_cq_error;
3101 }
3102
3103 mem->dma = paddr;
3104 ret = beiscsi_cmd_cq_create(&phba->ctrl, cq, eq, false,
3105 false, 0);
3106 if (ret) {
3107 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3108 "BM_%d : beiscsi_cmd_eq_create"
3109 "Failed for ISCSI CQ\n");
3110 goto create_cq_error;
3111 }
3112 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3113 "BM_%d : iscsi cq_id is %d for eq_id %d\n"
3114 "iSCSI CQ CREATED\n", cq->id, eq->id);
3115 }
3116 return 0;
3117
3118 create_cq_error:
3119 for (i = 0; i < phba->num_cpus; i++) {
3120 cq = &phwi_context->be_cq[i];
3121 mem = &cq->dma_mem;
3122 if (mem->va)
3123 pci_free_consistent(phba->pcidev, num_cq_pages
3124 * PAGE_SIZE,
3125 mem->va, mem->dma);
3126 }
3127 return ret;
3128 }
3129
3130 static int
3131 beiscsi_create_def_hdr(struct beiscsi_hba *phba,
3132 struct hwi_context_memory *phwi_context,
3133 struct hwi_controller *phwi_ctrlr,
3134 unsigned int def_pdu_ring_sz, uint8_t ulp_num)
3135 {
3136 unsigned int idx;
3137 int ret;
3138 struct be_queue_info *dq, *cq;
3139 struct be_dma_mem *mem;
3140 struct be_mem_descriptor *mem_descr;
3141 void *dq_vaddress;
3142
3143 idx = 0;
3144 dq = &phwi_context->be_def_hdrq[ulp_num];
3145 cq = &phwi_context->be_cq[0];
3146 mem = &dq->dma_mem;
3147 mem_descr = phba->init_mem;
3148 mem_descr += HWI_MEM_ASYNC_HEADER_RING_ULP0 +
3149 (ulp_num * MEM_DESCR_OFFSET);
3150 dq_vaddress = mem_descr->mem_array[idx].virtual_address;
3151 ret = be_fill_queue(dq, mem_descr->mem_array[0].size /
3152 sizeof(struct phys_addr),
3153 sizeof(struct phys_addr), dq_vaddress);
3154 if (ret) {
3155 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3156 "BM_%d : be_fill_queue Failed for DEF PDU HDR on ULP : %d\n",
3157 ulp_num);
3158
3159 return ret;
3160 }
3161 mem->dma = (unsigned long)mem_descr->mem_array[idx].
3162 bus_address.u.a64.address;
3163 ret = be_cmd_create_default_pdu_queue(&phba->ctrl, cq, dq,
3164 def_pdu_ring_sz,
3165 phba->params.defpdu_hdr_sz,
3166 BEISCSI_DEFQ_HDR, ulp_num);
3167 if (ret) {
3168 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3169 "BM_%d : be_cmd_create_default_pdu_queue Failed DEFHDR on ULP : %d\n",
3170 ulp_num);
3171
3172 return ret;
3173 }
3174
3175 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3176 "BM_%d : iscsi hdr def pdu id for ULP : %d is %d\n",
3177 ulp_num,
3178 phwi_context->be_def_hdrq[ulp_num].id);
3179 return 0;
3180 }
3181
3182 static int
3183 beiscsi_create_def_data(struct beiscsi_hba *phba,
3184 struct hwi_context_memory *phwi_context,
3185 struct hwi_controller *phwi_ctrlr,
3186 unsigned int def_pdu_ring_sz, uint8_t ulp_num)
3187 {
3188 unsigned int idx;
3189 int ret;
3190 struct be_queue_info *dataq, *cq;
3191 struct be_dma_mem *mem;
3192 struct be_mem_descriptor *mem_descr;
3193 void *dq_vaddress;
3194
3195 idx = 0;
3196 dataq = &phwi_context->be_def_dataq[ulp_num];
3197 cq = &phwi_context->be_cq[0];
3198 mem = &dataq->dma_mem;
3199 mem_descr = phba->init_mem;
3200 mem_descr += HWI_MEM_ASYNC_DATA_RING_ULP0 +
3201 (ulp_num * MEM_DESCR_OFFSET);
3202 dq_vaddress = mem_descr->mem_array[idx].virtual_address;
3203 ret = be_fill_queue(dataq, mem_descr->mem_array[0].size /
3204 sizeof(struct phys_addr),
3205 sizeof(struct phys_addr), dq_vaddress);
3206 if (ret) {
3207 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3208 "BM_%d : be_fill_queue Failed for DEF PDU "
3209 "DATA on ULP : %d\n",
3210 ulp_num);
3211
3212 return ret;
3213 }
3214 mem->dma = (unsigned long)mem_descr->mem_array[idx].
3215 bus_address.u.a64.address;
3216 ret = be_cmd_create_default_pdu_queue(&phba->ctrl, cq, dataq,
3217 def_pdu_ring_sz,
3218 phba->params.defpdu_data_sz,
3219 BEISCSI_DEFQ_DATA, ulp_num);
3220 if (ret) {
3221 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3222 "BM_%d be_cmd_create_default_pdu_queue"
3223 " Failed for DEF PDU DATA on ULP : %d\n",
3224 ulp_num);
3225 return ret;
3226 }
3227
3228 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3229 "BM_%d : iscsi def data id on ULP : %d is %d\n",
3230 ulp_num,
3231 phwi_context->be_def_dataq[ulp_num].id);
3232
3233 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3234 "BM_%d : DEFAULT PDU DATA RING CREATED"
3235 "on ULP : %d\n", ulp_num);
3236 return 0;
3237 }
3238
3239
3240 static int
3241 beiscsi_post_template_hdr(struct beiscsi_hba *phba)
3242 {
3243 struct be_mem_descriptor *mem_descr;
3244 struct mem_array *pm_arr;
3245 struct be_dma_mem sgl;
3246 int status, ulp_num;
3247
3248 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
3249 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
3250 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
3251 mem_descr += HWI_MEM_TEMPLATE_HDR_ULP0 +
3252 (ulp_num * MEM_DESCR_OFFSET);
3253 pm_arr = mem_descr->mem_array;
3254
3255 hwi_build_be_sgl_arr(phba, pm_arr, &sgl);
3256 status = be_cmd_iscsi_post_template_hdr(
3257 &phba->ctrl, &sgl);
3258
3259 if (status != 0) {
3260 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3261 "BM_%d : Post Template HDR Failed for"
3262 "ULP_%d\n", ulp_num);
3263 return status;
3264 }
3265
3266 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3267 "BM_%d : Template HDR Pages Posted for"
3268 "ULP_%d\n", ulp_num);
3269 }
3270 }
3271 return 0;
3272 }
3273
3274 static int
3275 beiscsi_post_pages(struct beiscsi_hba *phba)
3276 {
3277 struct be_mem_descriptor *mem_descr;
3278 struct mem_array *pm_arr;
3279 unsigned int page_offset, i;
3280 struct be_dma_mem sgl;
3281 int status, ulp_num = 0;
3282
3283 mem_descr = phba->init_mem;
3284 mem_descr += HWI_MEM_SGE;
3285 pm_arr = mem_descr->mem_array;
3286
3287 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++)
3288 if (test_bit(ulp_num, &phba->fw_config.ulp_supported))
3289 break;
3290
3291 page_offset = (sizeof(struct iscsi_sge) * phba->params.num_sge_per_io *
3292 phba->fw_config.iscsi_icd_start[ulp_num]) / PAGE_SIZE;
3293 for (i = 0; i < mem_descr->num_elements; i++) {
3294 hwi_build_be_sgl_arr(phba, pm_arr, &sgl);
3295 status = be_cmd_iscsi_post_sgl_pages(&phba->ctrl, &sgl,
3296 page_offset,
3297 (pm_arr->size / PAGE_SIZE));
3298 page_offset += pm_arr->size / PAGE_SIZE;
3299 if (status != 0) {
3300 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3301 "BM_%d : post sgl failed.\n");
3302 return status;
3303 }
3304 pm_arr++;
3305 }
3306 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3307 "BM_%d : POSTED PAGES\n");
3308 return 0;
3309 }
3310
3311 static void be_queue_free(struct beiscsi_hba *phba, struct be_queue_info *q)
3312 {
3313 struct be_dma_mem *mem = &q->dma_mem;
3314 if (mem->va) {
3315 pci_free_consistent(phba->pcidev, mem->size,
3316 mem->va, mem->dma);
3317 mem->va = NULL;
3318 }
3319 }
3320
3321 static int be_queue_alloc(struct beiscsi_hba *phba, struct be_queue_info *q,
3322 u16 len, u16 entry_size)
3323 {
3324 struct be_dma_mem *mem = &q->dma_mem;
3325
3326 memset(q, 0, sizeof(*q));
3327 q->len = len;
3328 q->entry_size = entry_size;
3329 mem->size = len * entry_size;
3330 mem->va = pci_zalloc_consistent(phba->pcidev, mem->size, &mem->dma);
3331 if (!mem->va)
3332 return -ENOMEM;
3333 return 0;
3334 }
3335
3336 static int
3337 beiscsi_create_wrb_rings(struct beiscsi_hba *phba,
3338 struct hwi_context_memory *phwi_context,
3339 struct hwi_controller *phwi_ctrlr)
3340 {
3341 unsigned int num_wrb_rings;
3342 u64 pa_addr_lo;
3343 unsigned int idx, num, i, ulp_num;
3344 struct mem_array *pwrb_arr;
3345 void *wrb_vaddr;
3346 struct be_dma_mem sgl;
3347 struct be_mem_descriptor *mem_descr;
3348 struct hwi_wrb_context *pwrb_context;
3349 int status;
3350 uint8_t ulp_count = 0, ulp_base_num = 0;
3351 uint16_t cid_count_ulp[BEISCSI_ULP_COUNT] = { 0 };
3352
3353 idx = 0;
3354 mem_descr = phba->init_mem;
3355 mem_descr += HWI_MEM_WRB;
3356 pwrb_arr = kmalloc(sizeof(*pwrb_arr) * phba->params.cxns_per_ctrl,
3357 GFP_KERNEL);
3358 if (!pwrb_arr) {
3359 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3360 "BM_%d : Memory alloc failed in create wrb ring.\n");
3361 return -ENOMEM;
3362 }
3363 wrb_vaddr = mem_descr->mem_array[idx].virtual_address;
3364 pa_addr_lo = mem_descr->mem_array[idx].bus_address.u.a64.address;
3365 num_wrb_rings = mem_descr->mem_array[idx].size /
3366 (phba->params.wrbs_per_cxn * sizeof(struct iscsi_wrb));
3367
3368 for (num = 0; num < phba->params.cxns_per_ctrl; num++) {
3369 if (num_wrb_rings) {
3370 pwrb_arr[num].virtual_address = wrb_vaddr;
3371 pwrb_arr[num].bus_address.u.a64.address = pa_addr_lo;
3372 pwrb_arr[num].size = phba->params.wrbs_per_cxn *
3373 sizeof(struct iscsi_wrb);
3374 wrb_vaddr += pwrb_arr[num].size;
3375 pa_addr_lo += pwrb_arr[num].size;
3376 num_wrb_rings--;
3377 } else {
3378 idx++;
3379 wrb_vaddr = mem_descr->mem_array[idx].virtual_address;
3380 pa_addr_lo = mem_descr->mem_array[idx].\
3381 bus_address.u.a64.address;
3382 num_wrb_rings = mem_descr->mem_array[idx].size /
3383 (phba->params.wrbs_per_cxn *
3384 sizeof(struct iscsi_wrb));
3385 pwrb_arr[num].virtual_address = wrb_vaddr;
3386 pwrb_arr[num].bus_address.u.a64.address\
3387 = pa_addr_lo;
3388 pwrb_arr[num].size = phba->params.wrbs_per_cxn *
3389 sizeof(struct iscsi_wrb);
3390 wrb_vaddr += pwrb_arr[num].size;
3391 pa_addr_lo += pwrb_arr[num].size;
3392 num_wrb_rings--;
3393 }
3394 }
3395
3396 /* Get the ULP Count */
3397 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++)
3398 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
3399 ulp_count++;
3400 ulp_base_num = ulp_num;
3401 cid_count_ulp[ulp_num] =
3402 BEISCSI_GET_CID_COUNT(phba, ulp_num);
3403 }
3404
3405 for (i = 0; i < phba->params.cxns_per_ctrl; i++) {
3406 if (ulp_count > 1) {
3407 ulp_base_num = (ulp_base_num + 1) % BEISCSI_ULP_COUNT;
3408
3409 if (!cid_count_ulp[ulp_base_num])
3410 ulp_base_num = (ulp_base_num + 1) %
3411 BEISCSI_ULP_COUNT;
3412
3413 cid_count_ulp[ulp_base_num]--;
3414 }
3415
3416
3417 hwi_build_be_sgl_by_offset(phba, &pwrb_arr[i], &sgl);
3418 status = be_cmd_wrbq_create(&phba->ctrl, &sgl,
3419 &phwi_context->be_wrbq[i],
3420 &phwi_ctrlr->wrb_context[i],
3421 ulp_base_num);
3422 if (status != 0) {
3423 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3424 "BM_%d : wrbq create failed.");
3425 kfree(pwrb_arr);
3426 return status;
3427 }
3428 pwrb_context = &phwi_ctrlr->wrb_context[i];
3429 BE_SET_CID_TO_CRI(i, pwrb_context->cid);
3430 }
3431 kfree(pwrb_arr);
3432 return 0;
3433 }
3434
3435 static void free_wrb_handles(struct beiscsi_hba *phba)
3436 {
3437 unsigned int index;
3438 struct hwi_controller *phwi_ctrlr;
3439 struct hwi_wrb_context *pwrb_context;
3440
3441 phwi_ctrlr = phba->phwi_ctrlr;
3442 for (index = 0; index < phba->params.cxns_per_ctrl; index++) {
3443 pwrb_context = &phwi_ctrlr->wrb_context[index];
3444 kfree(pwrb_context->pwrb_handle_base);
3445 kfree(pwrb_context->pwrb_handle_basestd);
3446 }
3447 }
3448
3449 static void be_mcc_queues_destroy(struct beiscsi_hba *phba)
3450 {
3451 struct be_ctrl_info *ctrl = &phba->ctrl;
3452 struct be_dma_mem *ptag_mem;
3453 struct be_queue_info *q;
3454 int i, tag;
3455
3456 q = &phba->ctrl.mcc_obj.q;
3457 for (i = 0; i < MAX_MCC_CMD; i++) {
3458 tag = i + 1;
3459 if (!test_bit(MCC_TAG_STATE_RUNNING,
3460 &ctrl->ptag_state[tag].tag_state))
3461 continue;
3462
3463 if (test_bit(MCC_TAG_STATE_TIMEOUT,
3464 &ctrl->ptag_state[tag].tag_state)) {
3465 ptag_mem = &ctrl->ptag_state[tag].tag_mem_state;
3466 if (ptag_mem->size) {
3467 pci_free_consistent(ctrl->pdev,
3468 ptag_mem->size,
3469 ptag_mem->va,
3470 ptag_mem->dma);
3471 ptag_mem->size = 0;
3472 }
3473 continue;
3474 }
3475 /**
3476 * If MCC is still active and waiting then wake up the process.
3477 * We are here only because port is going offline. The process
3478 * sees that (BEISCSI_HBA_ONLINE is cleared) and EIO error is
3479 * returned for the operation and allocated memory cleaned up.
3480 */
3481 if (waitqueue_active(&ctrl->mcc_wait[tag])) {
3482 ctrl->mcc_tag_status[tag] = MCC_STATUS_FAILED;
3483 ctrl->mcc_tag_status[tag] |= CQE_VALID_MASK;
3484 wake_up_interruptible(&ctrl->mcc_wait[tag]);
3485 /*
3486 * Control tag info gets reinitialized in enable
3487 * so wait for the process to clear running state.
3488 */
3489 while (test_bit(MCC_TAG_STATE_RUNNING,
3490 &ctrl->ptag_state[tag].tag_state))
3491 schedule_timeout_uninterruptible(HZ);
3492 }
3493 /**
3494 * For MCC with tag_states MCC_TAG_STATE_ASYNC and
3495 * MCC_TAG_STATE_IGNORE nothing needs to done.
3496 */
3497 }
3498 if (q->created) {
3499 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_MCCQ);
3500 be_queue_free(phba, q);
3501 }
3502
3503 q = &phba->ctrl.mcc_obj.cq;
3504 if (q->created) {
3505 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_CQ);
3506 be_queue_free(phba, q);
3507 }
3508 }
3509
3510 static int be_mcc_queues_create(struct beiscsi_hba *phba,
3511 struct hwi_context_memory *phwi_context)
3512 {
3513 struct be_queue_info *q, *cq;
3514 struct be_ctrl_info *ctrl = &phba->ctrl;
3515
3516 /* Alloc MCC compl queue */
3517 cq = &phba->ctrl.mcc_obj.cq;
3518 if (be_queue_alloc(phba, cq, MCC_CQ_LEN,
3519 sizeof(struct be_mcc_compl)))
3520 goto err;
3521 /* Ask BE to create MCC compl queue; */
3522 if (phba->pcidev->msix_enabled) {
3523 if (beiscsi_cmd_cq_create(ctrl, cq,
3524 &phwi_context->be_eq[phba->num_cpus].q,
3525 false, true, 0))
3526 goto mcc_cq_free;
3527 } else {
3528 if (beiscsi_cmd_cq_create(ctrl, cq, &phwi_context->be_eq[0].q,
3529 false, true, 0))
3530 goto mcc_cq_free;
3531 }
3532
3533 /* Alloc MCC queue */
3534 q = &phba->ctrl.mcc_obj.q;
3535 if (be_queue_alloc(phba, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
3536 goto mcc_cq_destroy;
3537
3538 /* Ask BE to create MCC queue */
3539 if (beiscsi_cmd_mccq_create(phba, q, cq))
3540 goto mcc_q_free;
3541
3542 return 0;
3543
3544 mcc_q_free:
3545 be_queue_free(phba, q);
3546 mcc_cq_destroy:
3547 beiscsi_cmd_q_destroy(ctrl, cq, QTYPE_CQ);
3548 mcc_cq_free:
3549 be_queue_free(phba, cq);
3550 err:
3551 return -ENOMEM;
3552 }
3553
3554 static void be2iscsi_enable_msix(struct beiscsi_hba *phba)
3555 {
3556 int nvec = 1;
3557
3558 switch (phba->generation) {
3559 case BE_GEN2:
3560 case BE_GEN3:
3561 nvec = BEISCSI_MAX_NUM_CPUS + 1;
3562 break;
3563 case BE_GEN4:
3564 nvec = phba->fw_config.eqid_count;
3565 break;
3566 default:
3567 nvec = 2;
3568 break;
3569 }
3570
3571 /* if eqid_count == 1 fall back to INTX */
3572 if (enable_msix && nvec > 1) {
3573 const struct irq_affinity desc = { .post_vectors = 1 };
3574
3575 if (pci_alloc_irq_vectors_affinity(phba->pcidev, 2, nvec,
3576 PCI_IRQ_MSIX | PCI_IRQ_AFFINITY, &desc) < 0) {
3577 phba->num_cpus = nvec - 1;
3578 return;
3579 }
3580 }
3581
3582 phba->num_cpus = 1;
3583 }
3584
3585 static void hwi_purge_eq(struct beiscsi_hba *phba)
3586 {
3587 struct hwi_controller *phwi_ctrlr;
3588 struct hwi_context_memory *phwi_context;
3589 struct be_queue_info *eq;
3590 struct be_eq_entry *eqe = NULL;
3591 int i, eq_msix;
3592 unsigned int num_processed;
3593
3594 if (beiscsi_hba_in_error(phba))
3595 return;
3596
3597 phwi_ctrlr = phba->phwi_ctrlr;
3598 phwi_context = phwi_ctrlr->phwi_ctxt;
3599 if (phba->pcidev->msix_enabled)
3600 eq_msix = 1;
3601 else
3602 eq_msix = 0;
3603
3604 for (i = 0; i < (phba->num_cpus + eq_msix); i++) {
3605 eq = &phwi_context->be_eq[i].q;
3606 eqe = queue_tail_node(eq);
3607 num_processed = 0;
3608 while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]
3609 & EQE_VALID_MASK) {
3610 AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
3611 queue_tail_inc(eq);
3612 eqe = queue_tail_node(eq);
3613 num_processed++;
3614 }
3615
3616 if (num_processed)
3617 hwi_ring_eq_db(phba, eq->id, 1, num_processed, 1, 1);
3618 }
3619 }
3620
3621 static void hwi_cleanup_port(struct beiscsi_hba *phba)
3622 {
3623 struct be_queue_info *q;
3624 struct be_ctrl_info *ctrl = &phba->ctrl;
3625 struct hwi_controller *phwi_ctrlr;
3626 struct hwi_context_memory *phwi_context;
3627 int i, eq_for_mcc, ulp_num;
3628
3629 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++)
3630 if (test_bit(ulp_num, &phba->fw_config.ulp_supported))
3631 beiscsi_cmd_iscsi_cleanup(phba, ulp_num);
3632
3633 /**
3634 * Purge all EQ entries that may have been left out. This is to
3635 * workaround a problem we've seen occasionally where driver gets an
3636 * interrupt with EQ entry bit set after stopping the controller.
3637 */
3638 hwi_purge_eq(phba);
3639
3640 phwi_ctrlr = phba->phwi_ctrlr;
3641 phwi_context = phwi_ctrlr->phwi_ctxt;
3642
3643 be_cmd_iscsi_remove_template_hdr(ctrl);
3644
3645 for (i = 0; i < phba->params.cxns_per_ctrl; i++) {
3646 q = &phwi_context->be_wrbq[i];
3647 if (q->created)
3648 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_WRBQ);
3649 }
3650 kfree(phwi_context->be_wrbq);
3651 free_wrb_handles(phba);
3652
3653 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
3654 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
3655
3656 q = &phwi_context->be_def_hdrq[ulp_num];
3657 if (q->created)
3658 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_DPDUQ);
3659
3660 q = &phwi_context->be_def_dataq[ulp_num];
3661 if (q->created)
3662 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_DPDUQ);
3663 }
3664 }
3665
3666 beiscsi_cmd_q_destroy(ctrl, NULL, QTYPE_SGL);
3667
3668 for (i = 0; i < (phba->num_cpus); i++) {
3669 q = &phwi_context->be_cq[i];
3670 if (q->created) {
3671 be_queue_free(phba, q);
3672 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_CQ);
3673 }
3674 }
3675
3676 be_mcc_queues_destroy(phba);
3677 if (phba->pcidev->msix_enabled)
3678 eq_for_mcc = 1;
3679 else
3680 eq_for_mcc = 0;
3681 for (i = 0; i < (phba->num_cpus + eq_for_mcc); i++) {
3682 q = &phwi_context->be_eq[i].q;
3683 if (q->created) {
3684 be_queue_free(phba, q);
3685 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_EQ);
3686 }
3687 }
3688 /* this ensures complete FW cleanup */
3689 beiscsi_cmd_function_reset(phba);
3690 /* last communication, indicate driver is unloading */
3691 beiscsi_cmd_special_wrb(&phba->ctrl, 0);
3692 }
3693
3694 static int hwi_init_port(struct beiscsi_hba *phba)
3695 {
3696 struct hwi_controller *phwi_ctrlr;
3697 struct hwi_context_memory *phwi_context;
3698 unsigned int def_pdu_ring_sz;
3699 struct be_ctrl_info *ctrl = &phba->ctrl;
3700 int status, ulp_num;
3701 u16 nbufs;
3702
3703 phwi_ctrlr = phba->phwi_ctrlr;
3704 phwi_context = phwi_ctrlr->phwi_ctxt;
3705 /* set port optic state to unknown */
3706 phba->optic_state = 0xff;
3707
3708 status = beiscsi_create_eqs(phba, phwi_context);
3709 if (status != 0) {
3710 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3711 "BM_%d : EQ not created\n");
3712 goto error;
3713 }
3714
3715 status = be_mcc_queues_create(phba, phwi_context);
3716 if (status != 0)
3717 goto error;
3718
3719 status = beiscsi_check_supported_fw(ctrl, phba);
3720 if (status != 0) {
3721 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3722 "BM_%d : Unsupported fw version\n");
3723 goto error;
3724 }
3725
3726 status = beiscsi_create_cqs(phba, phwi_context);
3727 if (status != 0) {
3728 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3729 "BM_%d : CQ not created\n");
3730 goto error;
3731 }
3732
3733 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
3734 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
3735 nbufs = phwi_context->pasync_ctx[ulp_num]->num_entries;
3736 def_pdu_ring_sz = nbufs * sizeof(struct phys_addr);
3737
3738 status = beiscsi_create_def_hdr(phba, phwi_context,
3739 phwi_ctrlr,
3740 def_pdu_ring_sz,
3741 ulp_num);
3742 if (status != 0) {
3743 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3744 "BM_%d : Default Header not created for ULP : %d\n",
3745 ulp_num);
3746 goto error;
3747 }
3748
3749 status = beiscsi_create_def_data(phba, phwi_context,
3750 phwi_ctrlr,
3751 def_pdu_ring_sz,
3752 ulp_num);
3753 if (status != 0) {
3754 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3755 "BM_%d : Default Data not created for ULP : %d\n",
3756 ulp_num);
3757 goto error;
3758 }
3759 /**
3760 * Now that the default PDU rings have been created,
3761 * let EP know about it.
3762 */
3763 beiscsi_hdq_post_handles(phba, BEISCSI_DEFQ_HDR,
3764 ulp_num, nbufs);
3765 beiscsi_hdq_post_handles(phba, BEISCSI_DEFQ_DATA,
3766 ulp_num, nbufs);
3767 }
3768 }
3769
3770 status = beiscsi_post_pages(phba);
3771 if (status != 0) {
3772 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3773 "BM_%d : Post SGL Pages Failed\n");
3774 goto error;
3775 }
3776
3777 status = beiscsi_post_template_hdr(phba);
3778 if (status != 0) {
3779 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3780 "BM_%d : Template HDR Posting for CXN Failed\n");
3781 }
3782
3783 status = beiscsi_create_wrb_rings(phba, phwi_context, phwi_ctrlr);
3784 if (status != 0) {
3785 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3786 "BM_%d : WRB Rings not created\n");
3787 goto error;
3788 }
3789
3790 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
3791 uint16_t async_arr_idx = 0;
3792
3793 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
3794 uint16_t cri = 0;
3795 struct hd_async_context *pasync_ctx;
3796
3797 pasync_ctx = HWI_GET_ASYNC_PDU_CTX(
3798 phwi_ctrlr, ulp_num);
3799 for (cri = 0; cri <
3800 phba->params.cxns_per_ctrl; cri++) {
3801 if (ulp_num == BEISCSI_GET_ULP_FROM_CRI
3802 (phwi_ctrlr, cri))
3803 pasync_ctx->cid_to_async_cri_map[
3804 phwi_ctrlr->wrb_context[cri].cid] =
3805 async_arr_idx++;
3806 }
3807 }
3808 }
3809
3810 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3811 "BM_%d : hwi_init_port success\n");
3812 return 0;
3813
3814 error:
3815 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3816 "BM_%d : hwi_init_port failed");
3817 hwi_cleanup_port(phba);
3818 return status;
3819 }
3820
3821 static int hwi_init_controller(struct beiscsi_hba *phba)
3822 {
3823 struct hwi_controller *phwi_ctrlr;
3824
3825 phwi_ctrlr = phba->phwi_ctrlr;
3826 if (1 == phba->init_mem[HWI_MEM_ADDN_CONTEXT].num_elements) {
3827 phwi_ctrlr->phwi_ctxt = (struct hwi_context_memory *)phba->
3828 init_mem[HWI_MEM_ADDN_CONTEXT].mem_array[0].virtual_address;
3829 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3830 "BM_%d : phwi_ctrlr->phwi_ctxt=%p\n",
3831 phwi_ctrlr->phwi_ctxt);
3832 } else {
3833 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3834 "BM_%d : HWI_MEM_ADDN_CONTEXT is more "
3835 "than one element.Failing to load\n");
3836 return -ENOMEM;
3837 }
3838
3839 iscsi_init_global_templates(phba);
3840 if (beiscsi_init_wrb_handle(phba))
3841 return -ENOMEM;
3842
3843 if (hwi_init_async_pdu_ctx(phba)) {
3844 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3845 "BM_%d : hwi_init_async_pdu_ctx failed\n");
3846 return -ENOMEM;
3847 }
3848
3849 if (hwi_init_port(phba) != 0) {
3850 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3851 "BM_%d : hwi_init_controller failed\n");
3852
3853 return -ENOMEM;
3854 }
3855 return 0;
3856 }
3857
3858 static void beiscsi_free_mem(struct beiscsi_hba *phba)
3859 {
3860 struct be_mem_descriptor *mem_descr;
3861 int i, j;
3862
3863 mem_descr = phba->init_mem;
3864 i = 0;
3865 j = 0;
3866 for (i = 0; i < SE_MEM_MAX; i++) {
3867 for (j = mem_descr->num_elements; j > 0; j--) {
3868 pci_free_consistent(phba->pcidev,
3869 mem_descr->mem_array[j - 1].size,
3870 mem_descr->mem_array[j - 1].virtual_address,
3871 (unsigned long)mem_descr->mem_array[j - 1].
3872 bus_address.u.a64.address);
3873 }
3874
3875 kfree(mem_descr->mem_array);
3876 mem_descr++;
3877 }
3878 kfree(phba->init_mem);
3879 kfree(phba->phwi_ctrlr->wrb_context);
3880 kfree(phba->phwi_ctrlr);
3881 }
3882
3883 static int beiscsi_init_sgl_handle(struct beiscsi_hba *phba)
3884 {
3885 struct be_mem_descriptor *mem_descr_sglh, *mem_descr_sg;
3886 struct sgl_handle *psgl_handle;
3887 struct iscsi_sge *pfrag;
3888 unsigned int arr_index, i, idx;
3889 unsigned int ulp_icd_start, ulp_num = 0;
3890
3891 phba->io_sgl_hndl_avbl = 0;
3892 phba->eh_sgl_hndl_avbl = 0;
3893
3894 mem_descr_sglh = phba->init_mem;
3895 mem_descr_sglh += HWI_MEM_SGLH;
3896 if (1 == mem_descr_sglh->num_elements) {
3897 phba->io_sgl_hndl_base = kzalloc(sizeof(struct sgl_handle *) *
3898 phba->params.ios_per_ctrl,
3899 GFP_KERNEL);
3900 if (!phba->io_sgl_hndl_base) {
3901 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3902 "BM_%d : Mem Alloc Failed. Failing to load\n");
3903 return -ENOMEM;
3904 }
3905 phba->eh_sgl_hndl_base = kzalloc(sizeof(struct sgl_handle *) *
3906 (phba->params.icds_per_ctrl -
3907 phba->params.ios_per_ctrl),
3908 GFP_KERNEL);
3909 if (!phba->eh_sgl_hndl_base) {
3910 kfree(phba->io_sgl_hndl_base);
3911 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3912 "BM_%d : Mem Alloc Failed. Failing to load\n");
3913 return -ENOMEM;
3914 }
3915 } else {
3916 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3917 "BM_%d : HWI_MEM_SGLH is more than one element."
3918 "Failing to load\n");
3919 return -ENOMEM;
3920 }
3921
3922 arr_index = 0;
3923 idx = 0;
3924 while (idx < mem_descr_sglh->num_elements) {
3925 psgl_handle = mem_descr_sglh->mem_array[idx].virtual_address;
3926
3927 for (i = 0; i < (mem_descr_sglh->mem_array[idx].size /
3928 sizeof(struct sgl_handle)); i++) {
3929 if (arr_index < phba->params.ios_per_ctrl) {
3930 phba->io_sgl_hndl_base[arr_index] = psgl_handle;
3931 phba->io_sgl_hndl_avbl++;
3932 arr_index++;
3933 } else {
3934 phba->eh_sgl_hndl_base[arr_index -
3935 phba->params.ios_per_ctrl] =
3936 psgl_handle;
3937 arr_index++;
3938 phba->eh_sgl_hndl_avbl++;
3939 }
3940 psgl_handle++;
3941 }
3942 idx++;
3943 }
3944 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3945 "BM_%d : phba->io_sgl_hndl_avbl=%d"
3946 "phba->eh_sgl_hndl_avbl=%d\n",
3947 phba->io_sgl_hndl_avbl,
3948 phba->eh_sgl_hndl_avbl);
3949
3950 mem_descr_sg = phba->init_mem;
3951 mem_descr_sg += HWI_MEM_SGE;
3952 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3953 "\n BM_%d : mem_descr_sg->num_elements=%d\n",
3954 mem_descr_sg->num_elements);
3955
3956 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++)
3957 if (test_bit(ulp_num, &phba->fw_config.ulp_supported))
3958 break;
3959
3960 ulp_icd_start = phba->fw_config.iscsi_icd_start[ulp_num];
3961
3962 arr_index = 0;
3963 idx = 0;
3964 while (idx < mem_descr_sg->num_elements) {
3965 pfrag = mem_descr_sg->mem_array[idx].virtual_address;
3966
3967 for (i = 0;
3968 i < (mem_descr_sg->mem_array[idx].size) /
3969 (sizeof(struct iscsi_sge) * phba->params.num_sge_per_io);
3970 i++) {
3971 if (arr_index < phba->params.ios_per_ctrl)
3972 psgl_handle = phba->io_sgl_hndl_base[arr_index];
3973 else
3974 psgl_handle = phba->eh_sgl_hndl_base[arr_index -
3975 phba->params.ios_per_ctrl];
3976 psgl_handle->pfrag = pfrag;
3977 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, pfrag, 0);
3978 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, pfrag, 0);
3979 pfrag += phba->params.num_sge_per_io;
3980 psgl_handle->sgl_index = ulp_icd_start + arr_index++;
3981 }
3982 idx++;
3983 }
3984 phba->io_sgl_free_index = 0;
3985 phba->io_sgl_alloc_index = 0;
3986 phba->eh_sgl_free_index = 0;
3987 phba->eh_sgl_alloc_index = 0;
3988 return 0;
3989 }
3990
3991 static int hba_setup_cid_tbls(struct beiscsi_hba *phba)
3992 {
3993 int ret;
3994 uint16_t i, ulp_num;
3995 struct ulp_cid_info *ptr_cid_info = NULL;
3996
3997 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
3998 if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) {
3999 ptr_cid_info = kzalloc(sizeof(struct ulp_cid_info),
4000 GFP_KERNEL);
4001
4002 if (!ptr_cid_info) {
4003 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4004 "BM_%d : Failed to allocate memory"
4005 "for ULP_CID_INFO for ULP : %d\n",
4006 ulp_num);
4007 ret = -ENOMEM;
4008 goto free_memory;
4009
4010 }
4011
4012 /* Allocate memory for CID array */
4013 ptr_cid_info->cid_array =
4014 kcalloc(BEISCSI_GET_CID_COUNT(phba, ulp_num),
4015 sizeof(*ptr_cid_info->cid_array),
4016 GFP_KERNEL);
4017 if (!ptr_cid_info->cid_array) {
4018 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4019 "BM_%d : Failed to allocate memory"
4020 "for CID_ARRAY for ULP : %d\n",
4021 ulp_num);
4022 kfree(ptr_cid_info);
4023 ptr_cid_info = NULL;
4024 ret = -ENOMEM;
4025
4026 goto free_memory;
4027 }
4028 ptr_cid_info->avlbl_cids = BEISCSI_GET_CID_COUNT(
4029 phba, ulp_num);
4030
4031 /* Save the cid_info_array ptr */
4032 phba->cid_array_info[ulp_num] = ptr_cid_info;
4033 }
4034 }
4035 phba->ep_array = kzalloc(sizeof(struct iscsi_endpoint *) *
4036 phba->params.cxns_per_ctrl, GFP_KERNEL);
4037 if (!phba->ep_array) {
4038 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4039 "BM_%d : Failed to allocate memory in "
4040 "hba_setup_cid_tbls\n");
4041 ret = -ENOMEM;
4042
4043 goto free_memory;
4044 }
4045
4046 phba->conn_table = kzalloc(sizeof(struct beiscsi_conn *) *
4047 phba->params.cxns_per_ctrl, GFP_KERNEL);
4048 if (!phba->conn_table) {
4049 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4050 "BM_%d : Failed to allocate memory in"
4051 "hba_setup_cid_tbls\n");
4052
4053 kfree(phba->ep_array);
4054 phba->ep_array = NULL;
4055 ret = -ENOMEM;
4056
4057 goto free_memory;
4058 }
4059
4060 for (i = 0; i < phba->params.cxns_per_ctrl; i++) {
4061 ulp_num = phba->phwi_ctrlr->wrb_context[i].ulp_num;
4062
4063 ptr_cid_info = phba->cid_array_info[ulp_num];
4064 ptr_cid_info->cid_array[ptr_cid_info->cid_alloc++] =
4065 phba->phwi_ctrlr->wrb_context[i].cid;
4066
4067 }
4068
4069 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
4070 if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) {
4071 ptr_cid_info = phba->cid_array_info[ulp_num];
4072
4073 ptr_cid_info->cid_alloc = 0;
4074 ptr_cid_info->cid_free = 0;
4075 }
4076 }
4077 return 0;
4078
4079 free_memory:
4080 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
4081 if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) {
4082 ptr_cid_info = phba->cid_array_info[ulp_num];
4083
4084 if (ptr_cid_info) {
4085 kfree(ptr_cid_info->cid_array);
4086 kfree(ptr_cid_info);
4087 phba->cid_array_info[ulp_num] = NULL;
4088 }
4089 }
4090 }
4091
4092 return ret;
4093 }
4094
4095 static void hwi_enable_intr(struct beiscsi_hba *phba)
4096 {
4097 struct be_ctrl_info *ctrl = &phba->ctrl;
4098 struct hwi_controller *phwi_ctrlr;
4099 struct hwi_context_memory *phwi_context;
4100 struct be_queue_info *eq;
4101 u8 __iomem *addr;
4102 u32 reg, i;
4103 u32 enabled;
4104
4105 phwi_ctrlr = phba->phwi_ctrlr;
4106 phwi_context = phwi_ctrlr->phwi_ctxt;
4107
4108 addr = (u8 __iomem *) ((u8 __iomem *) ctrl->pcicfg +
4109 PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET);
4110 reg = ioread32(addr);
4111
4112 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
4113 if (!enabled) {
4114 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
4115 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
4116 "BM_%d : reg =x%08x addr=%p\n", reg, addr);
4117 iowrite32(reg, addr);
4118 }
4119
4120 if (!phba->pcidev->msix_enabled) {
4121 eq = &phwi_context->be_eq[0].q;
4122 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
4123 "BM_%d : eq->id=%d\n", eq->id);
4124
4125 hwi_ring_eq_db(phba, eq->id, 0, 0, 1, 1);
4126 } else {
4127 for (i = 0; i <= phba->num_cpus; i++) {
4128 eq = &phwi_context->be_eq[i].q;
4129 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
4130 "BM_%d : eq->id=%d\n", eq->id);
4131 hwi_ring_eq_db(phba, eq->id, 0, 0, 1, 1);
4132 }
4133 }
4134 }
4135
4136 static void hwi_disable_intr(struct beiscsi_hba *phba)
4137 {
4138 struct be_ctrl_info *ctrl = &phba->ctrl;
4139
4140 u8 __iomem *addr = ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
4141 u32 reg = ioread32(addr);
4142
4143 u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
4144 if (enabled) {
4145 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
4146 iowrite32(reg, addr);
4147 } else
4148 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_INIT,
4149 "BM_%d : In hwi_disable_intr, Already Disabled\n");
4150 }
4151
4152 static int beiscsi_init_port(struct beiscsi_hba *phba)
4153 {
4154 int ret;
4155
4156 ret = hwi_init_controller(phba);
4157 if (ret < 0) {
4158 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4159 "BM_%d : init controller failed\n");
4160 return ret;
4161 }
4162 ret = beiscsi_init_sgl_handle(phba);
4163 if (ret < 0) {
4164 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4165 "BM_%d : init sgl handles failed\n");
4166 goto cleanup_port;
4167 }
4168
4169 ret = hba_setup_cid_tbls(phba);
4170 if (ret < 0) {
4171 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4172 "BM_%d : setup CID table failed\n");
4173 kfree(phba->io_sgl_hndl_base);
4174 kfree(phba->eh_sgl_hndl_base);
4175 goto cleanup_port;
4176 }
4177 return ret;
4178
4179 cleanup_port:
4180 hwi_cleanup_port(phba);
4181 return ret;
4182 }
4183
4184 static void beiscsi_cleanup_port(struct beiscsi_hba *phba)
4185 {
4186 struct ulp_cid_info *ptr_cid_info = NULL;
4187 int ulp_num;
4188
4189 kfree(phba->io_sgl_hndl_base);
4190 kfree(phba->eh_sgl_hndl_base);
4191 kfree(phba->ep_array);
4192 kfree(phba->conn_table);
4193
4194 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
4195 if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) {
4196 ptr_cid_info = phba->cid_array_info[ulp_num];
4197
4198 if (ptr_cid_info) {
4199 kfree(ptr_cid_info->cid_array);
4200 kfree(ptr_cid_info);
4201 phba->cid_array_info[ulp_num] = NULL;
4202 }
4203 }
4204 }
4205 }
4206
4207 /**
4208 * beiscsi_free_mgmt_task_handles()- Free driver CXN resources
4209 * @beiscsi_conn: ptr to the conn to be cleaned up
4210 * @task: ptr to iscsi_task resource to be freed.
4211 *
4212 * Free driver mgmt resources binded to CXN.
4213 **/
4214 void
4215 beiscsi_free_mgmt_task_handles(struct beiscsi_conn *beiscsi_conn,
4216 struct iscsi_task *task)
4217 {
4218 struct beiscsi_io_task *io_task;
4219 struct beiscsi_hba *phba = beiscsi_conn->phba;
4220 struct hwi_wrb_context *pwrb_context;
4221 struct hwi_controller *phwi_ctrlr;
4222 uint16_t cri_index = BE_GET_CRI_FROM_CID(
4223 beiscsi_conn->beiscsi_conn_cid);
4224
4225 phwi_ctrlr = phba->phwi_ctrlr;
4226 pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
4227
4228 io_task = task->dd_data;
4229
4230 if (io_task->pwrb_handle) {
4231 free_wrb_handle(phba, pwrb_context, io_task->pwrb_handle);
4232 io_task->pwrb_handle = NULL;
4233 }
4234
4235 if (io_task->psgl_handle) {
4236 free_mgmt_sgl_handle(phba, io_task->psgl_handle);
4237 io_task->psgl_handle = NULL;
4238 }
4239
4240 if (io_task->mtask_addr) {
4241 pci_unmap_single(phba->pcidev,
4242 io_task->mtask_addr,
4243 io_task->mtask_data_count,
4244 PCI_DMA_TODEVICE);
4245 io_task->mtask_addr = 0;
4246 }
4247 }
4248
4249 /**
4250 * beiscsi_cleanup_task()- Free driver resources of the task
4251 * @task: ptr to the iscsi task
4252 *
4253 **/
4254 static void beiscsi_cleanup_task(struct iscsi_task *task)
4255 {
4256 struct beiscsi_io_task *io_task = task->dd_data;
4257 struct iscsi_conn *conn = task->conn;
4258 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
4259 struct beiscsi_hba *phba = beiscsi_conn->phba;
4260 struct beiscsi_session *beiscsi_sess = beiscsi_conn->beiscsi_sess;
4261 struct hwi_wrb_context *pwrb_context;
4262 struct hwi_controller *phwi_ctrlr;
4263 uint16_t cri_index = BE_GET_CRI_FROM_CID(
4264 beiscsi_conn->beiscsi_conn_cid);
4265
4266 phwi_ctrlr = phba->phwi_ctrlr;
4267 pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
4268
4269 if (io_task->cmd_bhs) {
4270 dma_pool_free(beiscsi_sess->bhs_pool, io_task->cmd_bhs,
4271 io_task->bhs_pa.u.a64.address);
4272 io_task->cmd_bhs = NULL;
4273 task->hdr = NULL;
4274 }
4275
4276 if (task->sc) {
4277 if (io_task->pwrb_handle) {
4278 free_wrb_handle(phba, pwrb_context,
4279 io_task->pwrb_handle);
4280 io_task->pwrb_handle = NULL;
4281 }
4282
4283 if (io_task->psgl_handle) {
4284 free_io_sgl_handle(phba, io_task->psgl_handle);
4285 io_task->psgl_handle = NULL;
4286 }
4287
4288 if (io_task->scsi_cmnd) {
4289 if (io_task->num_sg)
4290 scsi_dma_unmap(io_task->scsi_cmnd);
4291 io_task->scsi_cmnd = NULL;
4292 }
4293 } else {
4294 if (!beiscsi_conn->login_in_progress)
4295 beiscsi_free_mgmt_task_handles(beiscsi_conn, task);
4296 }
4297 }
4298
4299 void
4300 beiscsi_offload_connection(struct beiscsi_conn *beiscsi_conn,
4301 struct beiscsi_offload_params *params)
4302 {
4303 struct wrb_handle *pwrb_handle;
4304 struct hwi_wrb_context *pwrb_context = NULL;
4305 struct beiscsi_hba *phba = beiscsi_conn->phba;
4306 struct iscsi_task *task = beiscsi_conn->task;
4307 struct iscsi_session *session = task->conn->session;
4308 u32 doorbell = 0;
4309
4310 /*
4311 * We can always use 0 here because it is reserved by libiscsi for
4312 * login/startup related tasks.
4313 */
4314 beiscsi_conn->login_in_progress = 0;
4315 spin_lock_bh(&session->back_lock);
4316 beiscsi_cleanup_task(task);
4317 spin_unlock_bh(&session->back_lock);
4318
4319 pwrb_handle = alloc_wrb_handle(phba, beiscsi_conn->beiscsi_conn_cid,
4320 &pwrb_context);
4321
4322 /* Check for the adapter family */
4323 if (is_chip_be2_be3r(phba))
4324 beiscsi_offload_cxn_v0(params, pwrb_handle,
4325 phba->init_mem,
4326 pwrb_context);
4327 else
4328 beiscsi_offload_cxn_v2(params, pwrb_handle,
4329 pwrb_context);
4330
4331 be_dws_le_to_cpu(pwrb_handle->pwrb,
4332 sizeof(struct iscsi_target_context_update_wrb));
4333
4334 doorbell |= beiscsi_conn->beiscsi_conn_cid & DB_WRB_POST_CID_MASK;
4335 doorbell |= (pwrb_handle->wrb_index & DB_DEF_PDU_WRB_INDEX_MASK)
4336 << DB_DEF_PDU_WRB_INDEX_SHIFT;
4337 doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
4338 iowrite32(doorbell, phba->db_va +
4339 beiscsi_conn->doorbell_offset);
4340
4341 /*
4342 * There is no completion for CONTEXT_UPDATE. The completion of next
4343 * WRB posted guarantees FW's processing and DMA'ing of it.
4344 * Use beiscsi_put_wrb_handle to put it back in the pool which makes
4345 * sure zero'ing or reuse of the WRB only after wrbs_per_cxn.
4346 */
4347 beiscsi_put_wrb_handle(pwrb_context, pwrb_handle,
4348 phba->params.wrbs_per_cxn);
4349 beiscsi_log(phba, KERN_INFO,
4350 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
4351 "BM_%d : put CONTEXT_UPDATE pwrb_handle=%p free_index=0x%x wrb_handles_available=%d\n",
4352 pwrb_handle, pwrb_context->free_index,
4353 pwrb_context->wrb_handles_available);
4354 }
4355
4356 static void beiscsi_parse_pdu(struct iscsi_conn *conn, itt_t itt,
4357 int *index, int *age)
4358 {
4359 *index = (int)itt;
4360 if (age)
4361 *age = conn->session->age;
4362 }
4363
4364 /**
4365 * beiscsi_alloc_pdu - allocates pdu and related resources
4366 * @task: libiscsi task
4367 * @opcode: opcode of pdu for task
4368 *
4369 * This is called with the session lock held. It will allocate
4370 * the wrb and sgl if needed for the command. And it will prep
4371 * the pdu's itt. beiscsi_parse_pdu will later translate
4372 * the pdu itt to the libiscsi task itt.
4373 */
4374 static int beiscsi_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
4375 {
4376 struct beiscsi_io_task *io_task = task->dd_data;
4377 struct iscsi_conn *conn = task->conn;
4378 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
4379 struct beiscsi_hba *phba = beiscsi_conn->phba;
4380 struct hwi_wrb_context *pwrb_context;
4381 struct hwi_controller *phwi_ctrlr;
4382 itt_t itt;
4383 uint16_t cri_index = 0;
4384 struct beiscsi_session *beiscsi_sess = beiscsi_conn->beiscsi_sess;
4385 dma_addr_t paddr;
4386
4387 io_task->cmd_bhs = dma_pool_alloc(beiscsi_sess->bhs_pool,
4388 GFP_ATOMIC, &paddr);
4389 if (!io_task->cmd_bhs)
4390 return -ENOMEM;
4391 io_task->bhs_pa.u.a64.address = paddr;
4392 io_task->libiscsi_itt = (itt_t)task->itt;
4393 io_task->conn = beiscsi_conn;
4394
4395 task->hdr = (struct iscsi_hdr *)&io_task->cmd_bhs->iscsi_hdr;
4396 task->hdr_max = sizeof(struct be_cmd_bhs);
4397 io_task->psgl_handle = NULL;
4398 io_task->pwrb_handle = NULL;
4399
4400 if (task->sc) {
4401 io_task->psgl_handle = alloc_io_sgl_handle(phba);
4402 if (!io_task->psgl_handle) {
4403 beiscsi_log(phba, KERN_ERR,
4404 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
4405 "BM_%d : Alloc of IO_SGL_ICD Failed"
4406 "for the CID : %d\n",
4407 beiscsi_conn->beiscsi_conn_cid);
4408 goto free_hndls;
4409 }
4410 io_task->pwrb_handle = alloc_wrb_handle(phba,
4411 beiscsi_conn->beiscsi_conn_cid,
4412 &io_task->pwrb_context);
4413 if (!io_task->pwrb_handle) {
4414 beiscsi_log(phba, KERN_ERR,
4415 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
4416 "BM_%d : Alloc of WRB_HANDLE Failed"
4417 "for the CID : %d\n",
4418 beiscsi_conn->beiscsi_conn_cid);
4419 goto free_io_hndls;
4420 }
4421 } else {
4422 io_task->scsi_cmnd = NULL;
4423 if ((opcode & ISCSI_OPCODE_MASK) == ISCSI_OP_LOGIN) {
4424 beiscsi_conn->task = task;
4425 if (!beiscsi_conn->login_in_progress) {
4426 io_task->psgl_handle = (struct sgl_handle *)
4427 alloc_mgmt_sgl_handle(phba);
4428 if (!io_task->psgl_handle) {
4429 beiscsi_log(phba, KERN_ERR,
4430 BEISCSI_LOG_IO |
4431 BEISCSI_LOG_CONFIG,
4432 "BM_%d : Alloc of MGMT_SGL_ICD Failed"
4433 "for the CID : %d\n",
4434 beiscsi_conn->
4435 beiscsi_conn_cid);
4436 goto free_hndls;
4437 }
4438
4439 beiscsi_conn->login_in_progress = 1;
4440 beiscsi_conn->plogin_sgl_handle =
4441 io_task->psgl_handle;
4442 io_task->pwrb_handle =
4443 alloc_wrb_handle(phba,
4444 beiscsi_conn->beiscsi_conn_cid,
4445 &io_task->pwrb_context);
4446 if (!io_task->pwrb_handle) {
4447 beiscsi_log(phba, KERN_ERR,
4448 BEISCSI_LOG_IO |
4449 BEISCSI_LOG_CONFIG,
4450 "BM_%d : Alloc of WRB_HANDLE Failed"
4451 "for the CID : %d\n",
4452 beiscsi_conn->
4453 beiscsi_conn_cid);
4454 goto free_mgmt_hndls;
4455 }
4456 beiscsi_conn->plogin_wrb_handle =
4457 io_task->pwrb_handle;
4458
4459 } else {
4460 io_task->psgl_handle =
4461 beiscsi_conn->plogin_sgl_handle;
4462 io_task->pwrb_handle =
4463 beiscsi_conn->plogin_wrb_handle;
4464 }
4465 } else {
4466 io_task->psgl_handle = alloc_mgmt_sgl_handle(phba);
4467 if (!io_task->psgl_handle) {
4468 beiscsi_log(phba, KERN_ERR,
4469 BEISCSI_LOG_IO |
4470 BEISCSI_LOG_CONFIG,
4471 "BM_%d : Alloc of MGMT_SGL_ICD Failed"
4472 "for the CID : %d\n",
4473 beiscsi_conn->
4474 beiscsi_conn_cid);
4475 goto free_hndls;
4476 }
4477 io_task->pwrb_handle =
4478 alloc_wrb_handle(phba,
4479 beiscsi_conn->beiscsi_conn_cid,
4480 &io_task->pwrb_context);
4481 if (!io_task->pwrb_handle) {
4482 beiscsi_log(phba, KERN_ERR,
4483 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
4484 "BM_%d : Alloc of WRB_HANDLE Failed"
4485 "for the CID : %d\n",
4486 beiscsi_conn->beiscsi_conn_cid);
4487 goto free_mgmt_hndls;
4488 }
4489
4490 }
4491 }
4492 itt = (itt_t) cpu_to_be32(((unsigned int)io_task->pwrb_handle->
4493 wrb_index << 16) | (unsigned int)
4494 (io_task->psgl_handle->sgl_index));
4495 io_task->pwrb_handle->pio_handle = task;
4496
4497 io_task->cmd_bhs->iscsi_hdr.itt = itt;
4498 return 0;
4499
4500 free_io_hndls:
4501 free_io_sgl_handle(phba, io_task->psgl_handle);
4502 goto free_hndls;
4503 free_mgmt_hndls:
4504 free_mgmt_sgl_handle(phba, io_task->psgl_handle);
4505 io_task->psgl_handle = NULL;
4506 free_hndls:
4507 phwi_ctrlr = phba->phwi_ctrlr;
4508 cri_index = BE_GET_CRI_FROM_CID(
4509 beiscsi_conn->beiscsi_conn_cid);
4510 pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
4511 if (io_task->pwrb_handle)
4512 free_wrb_handle(phba, pwrb_context, io_task->pwrb_handle);
4513 io_task->pwrb_handle = NULL;
4514 dma_pool_free(beiscsi_sess->bhs_pool, io_task->cmd_bhs,
4515 io_task->bhs_pa.u.a64.address);
4516 io_task->cmd_bhs = NULL;
4517 return -ENOMEM;
4518 }
4519 static int beiscsi_iotask_v2(struct iscsi_task *task, struct scatterlist *sg,
4520 unsigned int num_sg, unsigned int xferlen,
4521 unsigned int writedir)
4522 {
4523
4524 struct beiscsi_io_task *io_task = task->dd_data;
4525 struct iscsi_conn *conn = task->conn;
4526 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
4527 struct beiscsi_hba *phba = beiscsi_conn->phba;
4528 struct iscsi_wrb *pwrb = NULL;
4529 unsigned int doorbell = 0;
4530
4531 pwrb = io_task->pwrb_handle->pwrb;
4532
4533 io_task->bhs_len = sizeof(struct be_cmd_bhs);
4534
4535 if (writedir) {
4536 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, type, pwrb,
4537 INI_WR_CMD);
4538 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, dsp, pwrb, 1);
4539 } else {
4540 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, type, pwrb,
4541 INI_RD_CMD);
4542 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, dsp, pwrb, 0);
4543 }
4544
4545 io_task->wrb_type = AMAP_GET_BITS(struct amap_iscsi_wrb_v2,
4546 type, pwrb);
4547
4548 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, lun, pwrb,
4549 cpu_to_be16(*(unsigned short *)
4550 &io_task->cmd_bhs->iscsi_hdr.lun));
4551 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, r2t_exp_dtl, pwrb, xferlen);
4552 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, wrb_idx, pwrb,
4553 io_task->pwrb_handle->wrb_index);
4554 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, cmdsn_itt, pwrb,
4555 be32_to_cpu(task->cmdsn));
4556 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sgl_idx, pwrb,
4557 io_task->psgl_handle->sgl_index);
4558
4559 hwi_write_sgl_v2(pwrb, sg, num_sg, io_task);
4560 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb, pwrb,
4561 io_task->pwrb_handle->wrb_index);
4562 if (io_task->pwrb_context->plast_wrb)
4563 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb,
4564 io_task->pwrb_context->plast_wrb,
4565 io_task->pwrb_handle->wrb_index);
4566 io_task->pwrb_context->plast_wrb = pwrb;
4567
4568 be_dws_le_to_cpu(pwrb, sizeof(struct iscsi_wrb));
4569
4570 doorbell |= beiscsi_conn->beiscsi_conn_cid & DB_WRB_POST_CID_MASK;
4571 doorbell |= (io_task->pwrb_handle->wrb_index &
4572 DB_DEF_PDU_WRB_INDEX_MASK) <<
4573 DB_DEF_PDU_WRB_INDEX_SHIFT;
4574 doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
4575 iowrite32(doorbell, phba->db_va +
4576 beiscsi_conn->doorbell_offset);
4577 return 0;
4578 }
4579
4580 static int beiscsi_iotask(struct iscsi_task *task, struct scatterlist *sg,
4581 unsigned int num_sg, unsigned int xferlen,
4582 unsigned int writedir)
4583 {
4584
4585 struct beiscsi_io_task *io_task = task->dd_data;
4586 struct iscsi_conn *conn = task->conn;
4587 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
4588 struct beiscsi_hba *phba = beiscsi_conn->phba;
4589 struct iscsi_wrb *pwrb = NULL;
4590 unsigned int doorbell = 0;
4591
4592 pwrb = io_task->pwrb_handle->pwrb;
4593 io_task->bhs_len = sizeof(struct be_cmd_bhs);
4594
4595 if (writedir) {
4596 AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
4597 INI_WR_CMD);
4598 AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 1);
4599 } else {
4600 AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
4601 INI_RD_CMD);
4602 AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 0);
4603 }
4604
4605 io_task->wrb_type = AMAP_GET_BITS(struct amap_iscsi_wrb,
4606 type, pwrb);
4607
4608 AMAP_SET_BITS(struct amap_iscsi_wrb, lun, pwrb,
4609 cpu_to_be16(*(unsigned short *)
4610 &io_task->cmd_bhs->iscsi_hdr.lun));
4611 AMAP_SET_BITS(struct amap_iscsi_wrb, r2t_exp_dtl, pwrb, xferlen);
4612 AMAP_SET_BITS(struct amap_iscsi_wrb, wrb_idx, pwrb,
4613 io_task->pwrb_handle->wrb_index);
4614 AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb,
4615 be32_to_cpu(task->cmdsn));
4616 AMAP_SET_BITS(struct amap_iscsi_wrb, sgl_icd_idx, pwrb,
4617 io_task->psgl_handle->sgl_index);
4618
4619 hwi_write_sgl(pwrb, sg, num_sg, io_task);
4620
4621 AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb, pwrb,
4622 io_task->pwrb_handle->wrb_index);
4623 if (io_task->pwrb_context->plast_wrb)
4624 AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb,
4625 io_task->pwrb_context->plast_wrb,
4626 io_task->pwrb_handle->wrb_index);
4627 io_task->pwrb_context->plast_wrb = pwrb;
4628
4629 be_dws_le_to_cpu(pwrb, sizeof(struct iscsi_wrb));
4630
4631 doorbell |= beiscsi_conn->beiscsi_conn_cid & DB_WRB_POST_CID_MASK;
4632 doorbell |= (io_task->pwrb_handle->wrb_index &
4633 DB_DEF_PDU_WRB_INDEX_MASK) << DB_DEF_PDU_WRB_INDEX_SHIFT;
4634 doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
4635
4636 iowrite32(doorbell, phba->db_va +
4637 beiscsi_conn->doorbell_offset);
4638 return 0;
4639 }
4640
4641 static int beiscsi_mtask(struct iscsi_task *task)
4642 {
4643 struct beiscsi_io_task *io_task = task->dd_data;
4644 struct iscsi_conn *conn = task->conn;
4645 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
4646 struct beiscsi_hba *phba = beiscsi_conn->phba;
4647 struct iscsi_wrb *pwrb = NULL;
4648 unsigned int doorbell = 0;
4649 unsigned int cid;
4650 unsigned int pwrb_typeoffset = 0;
4651 int ret = 0;
4652
4653 cid = beiscsi_conn->beiscsi_conn_cid;
4654 pwrb = io_task->pwrb_handle->pwrb;
4655
4656 if (is_chip_be2_be3r(phba)) {
4657 AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb,
4658 be32_to_cpu(task->cmdsn));
4659 AMAP_SET_BITS(struct amap_iscsi_wrb, wrb_idx, pwrb,
4660 io_task->pwrb_handle->wrb_index);
4661 AMAP_SET_BITS(struct amap_iscsi_wrb, sgl_icd_idx, pwrb,
4662 io_task->psgl_handle->sgl_index);
4663 AMAP_SET_BITS(struct amap_iscsi_wrb, r2t_exp_dtl, pwrb,
4664 task->data_count);
4665 AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb, pwrb,
4666 io_task->pwrb_handle->wrb_index);
4667 if (io_task->pwrb_context->plast_wrb)
4668 AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb,
4669 io_task->pwrb_context->plast_wrb,
4670 io_task->pwrb_handle->wrb_index);
4671 io_task->pwrb_context->plast_wrb = pwrb;
4672
4673 pwrb_typeoffset = BE_WRB_TYPE_OFFSET;
4674 } else {
4675 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, cmdsn_itt, pwrb,
4676 be32_to_cpu(task->cmdsn));
4677 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, wrb_idx, pwrb,
4678 io_task->pwrb_handle->wrb_index);
4679 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sgl_idx, pwrb,
4680 io_task->psgl_handle->sgl_index);
4681 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, r2t_exp_dtl, pwrb,
4682 task->data_count);
4683 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb, pwrb,
4684 io_task->pwrb_handle->wrb_index);
4685 if (io_task->pwrb_context->plast_wrb)
4686 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb,
4687 io_task->pwrb_context->plast_wrb,
4688 io_task->pwrb_handle->wrb_index);
4689 io_task->pwrb_context->plast_wrb = pwrb;
4690
4691 pwrb_typeoffset = SKH_WRB_TYPE_OFFSET;
4692 }
4693
4694
4695 switch (task->hdr->opcode & ISCSI_OPCODE_MASK) {
4696 case ISCSI_OP_LOGIN:
4697 AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb, 1);
4698 ADAPTER_SET_WRB_TYPE(pwrb, TGT_DM_CMD, pwrb_typeoffset);
4699 ret = hwi_write_buffer(pwrb, task);
4700 break;
4701 case ISCSI_OP_NOOP_OUT:
4702 if (task->hdr->ttt != ISCSI_RESERVED_TAG) {
4703 ADAPTER_SET_WRB_TYPE(pwrb, TGT_DM_CMD, pwrb_typeoffset);
4704 if (is_chip_be2_be3r(phba))
4705 AMAP_SET_BITS(struct amap_iscsi_wrb,
4706 dmsg, pwrb, 1);
4707 else
4708 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
4709 dmsg, pwrb, 1);
4710 } else {
4711 ADAPTER_SET_WRB_TYPE(pwrb, INI_RD_CMD, pwrb_typeoffset);
4712 if (is_chip_be2_be3r(phba))
4713 AMAP_SET_BITS(struct amap_iscsi_wrb,
4714 dmsg, pwrb, 0);
4715 else
4716 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
4717 dmsg, pwrb, 0);
4718 }
4719 ret = hwi_write_buffer(pwrb, task);
4720 break;
4721 case ISCSI_OP_TEXT:
4722 ADAPTER_SET_WRB_TYPE(pwrb, TGT_DM_CMD, pwrb_typeoffset);
4723 ret = hwi_write_buffer(pwrb, task);
4724 break;
4725 case ISCSI_OP_SCSI_TMFUNC:
4726 ADAPTER_SET_WRB_TYPE(pwrb, INI_TMF_CMD, pwrb_typeoffset);
4727 ret = hwi_write_buffer(pwrb, task);
4728 break;
4729 case ISCSI_OP_LOGOUT:
4730 ADAPTER_SET_WRB_TYPE(pwrb, HWH_TYPE_LOGOUT, pwrb_typeoffset);
4731 ret = hwi_write_buffer(pwrb, task);
4732 break;
4733
4734 default:
4735 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
4736 "BM_%d : opcode =%d Not supported\n",
4737 task->hdr->opcode & ISCSI_OPCODE_MASK);
4738
4739 return -EINVAL;
4740 }
4741
4742 if (ret)
4743 return ret;
4744
4745 /* Set the task type */
4746 io_task->wrb_type = (is_chip_be2_be3r(phba)) ?
4747 AMAP_GET_BITS(struct amap_iscsi_wrb, type, pwrb) :
4748 AMAP_GET_BITS(struct amap_iscsi_wrb_v2, type, pwrb);
4749
4750 doorbell |= cid & DB_WRB_POST_CID_MASK;
4751 doorbell |= (io_task->pwrb_handle->wrb_index &
4752 DB_DEF_PDU_WRB_INDEX_MASK) << DB_DEF_PDU_WRB_INDEX_SHIFT;
4753 doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
4754 iowrite32(doorbell, phba->db_va +
4755 beiscsi_conn->doorbell_offset);
4756 return 0;
4757 }
4758
4759 static int beiscsi_task_xmit(struct iscsi_task *task)
4760 {
4761 struct beiscsi_io_task *io_task = task->dd_data;
4762 struct scsi_cmnd *sc = task->sc;
4763 struct beiscsi_hba *phba;
4764 struct scatterlist *sg;
4765 int num_sg;
4766 unsigned int writedir = 0, xferlen = 0;
4767
4768 phba = io_task->conn->phba;
4769 /**
4770 * HBA in error includes BEISCSI_HBA_FW_TIMEOUT. IO path might be
4771 * operational if FW still gets heartbeat from EP FW. Is management
4772 * path really needed to continue further?
4773 */
4774 if (!beiscsi_hba_is_online(phba))
4775 return -EIO;
4776
4777 if (!io_task->conn->login_in_progress)
4778 task->hdr->exp_statsn = 0;
4779
4780 if (!sc)
4781 return beiscsi_mtask(task);
4782
4783 io_task->scsi_cmnd = sc;
4784 io_task->num_sg = 0;
4785 num_sg = scsi_dma_map(sc);
4786 if (num_sg < 0) {
4787 beiscsi_log(phba, KERN_ERR,
4788 BEISCSI_LOG_IO | BEISCSI_LOG_ISCSI,
4789 "BM_%d : scsi_dma_map Failed "
4790 "Driver_ITT : 0x%x ITT : 0x%x Xferlen : 0x%x\n",
4791 be32_to_cpu(io_task->cmd_bhs->iscsi_hdr.itt),
4792 io_task->libiscsi_itt, scsi_bufflen(sc));
4793
4794 return num_sg;
4795 }
4796 /**
4797 * For scsi cmd task, check num_sg before unmapping in cleanup_task.
4798 * For management task, cleanup_task checks mtask_addr before unmapping.
4799 */
4800 io_task->num_sg = num_sg;
4801 xferlen = scsi_bufflen(sc);
4802 sg = scsi_sglist(sc);
4803 if (sc->sc_data_direction == DMA_TO_DEVICE)
4804 writedir = 1;
4805 else
4806 writedir = 0;
4807
4808 return phba->iotask_fn(task, sg, num_sg, xferlen, writedir);
4809 }
4810
4811 /**
4812 * beiscsi_bsg_request - handle bsg request from ISCSI transport
4813 * @job: job to handle
4814 */
4815 static int beiscsi_bsg_request(struct bsg_job *job)
4816 {
4817 struct Scsi_Host *shost;
4818 struct beiscsi_hba *phba;
4819 struct iscsi_bsg_request *bsg_req = job->request;
4820 int rc = -EINVAL;
4821 unsigned int tag;
4822 struct be_dma_mem nonemb_cmd;
4823 struct be_cmd_resp_hdr *resp;
4824 struct iscsi_bsg_reply *bsg_reply = job->reply;
4825 unsigned short status, extd_status;
4826
4827 shost = iscsi_job_to_shost(job);
4828 phba = iscsi_host_priv(shost);
4829
4830 if (!beiscsi_hba_is_online(phba)) {
4831 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
4832 "BM_%d : HBA in error 0x%lx\n", phba->state);
4833 return -ENXIO;
4834 }
4835
4836 switch (bsg_req->msgcode) {
4837 case ISCSI_BSG_HST_VENDOR:
4838 nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev,
4839 job->request_payload.payload_len,
4840 &nonemb_cmd.dma);
4841 if (nonemb_cmd.va == NULL) {
4842 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
4843 "BM_%d : Failed to allocate memory for "
4844 "beiscsi_bsg_request\n");
4845 return -ENOMEM;
4846 }
4847 tag = mgmt_vendor_specific_fw_cmd(&phba->ctrl, phba, job,
4848 &nonemb_cmd);
4849 if (!tag) {
4850 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
4851 "BM_%d : MBX Tag Allocation Failed\n");
4852
4853 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
4854 nonemb_cmd.va, nonemb_cmd.dma);
4855 return -EAGAIN;
4856 }
4857
4858 rc = wait_event_interruptible_timeout(
4859 phba->ctrl.mcc_wait[tag],
4860 phba->ctrl.mcc_tag_status[tag],
4861 msecs_to_jiffies(
4862 BEISCSI_HOST_MBX_TIMEOUT));
4863
4864 if (!test_bit(BEISCSI_HBA_ONLINE, &phba->state)) {
4865 clear_bit(MCC_TAG_STATE_RUNNING,
4866 &phba->ctrl.ptag_state[tag].tag_state);
4867 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
4868 nonemb_cmd.va, nonemb_cmd.dma);
4869 return -EIO;
4870 }
4871 extd_status = (phba->ctrl.mcc_tag_status[tag] &
4872 CQE_STATUS_ADDL_MASK) >> CQE_STATUS_ADDL_SHIFT;
4873 status = phba->ctrl.mcc_tag_status[tag] & CQE_STATUS_MASK;
4874 free_mcc_wrb(&phba->ctrl, tag);
4875 resp = (struct be_cmd_resp_hdr *)nonemb_cmd.va;
4876 sg_copy_from_buffer(job->reply_payload.sg_list,
4877 job->reply_payload.sg_cnt,
4878 nonemb_cmd.va, (resp->response_length
4879 + sizeof(*resp)));
4880 bsg_reply->reply_payload_rcv_len = resp->response_length;
4881 bsg_reply->result = status;
4882 bsg_job_done(job, bsg_reply->result,
4883 bsg_reply->reply_payload_rcv_len);
4884 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
4885 nonemb_cmd.va, nonemb_cmd.dma);
4886 if (status || extd_status) {
4887 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
4888 "BM_%d : MBX Cmd Failed"
4889 " status = %d extd_status = %d\n",
4890 status, extd_status);
4891
4892 return -EIO;
4893 } else {
4894 rc = 0;
4895 }
4896 break;
4897
4898 default:
4899 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
4900 "BM_%d : Unsupported bsg command: 0x%x\n",
4901 bsg_req->msgcode);
4902 break;
4903 }
4904
4905 return rc;
4906 }
4907
4908 static void beiscsi_hba_attrs_init(struct beiscsi_hba *phba)
4909 {
4910 /* Set the logging parameter */
4911 beiscsi_log_enable_init(phba, beiscsi_log_enable);
4912 }
4913
4914 void beiscsi_start_boot_work(struct beiscsi_hba *phba, unsigned int s_handle)
4915 {
4916 if (phba->boot_struct.boot_kset)
4917 return;
4918
4919 /* skip if boot work is already in progress */
4920 if (test_and_set_bit(BEISCSI_HBA_BOOT_WORK, &phba->state))
4921 return;
4922
4923 phba->boot_struct.retry = 3;
4924 phba->boot_struct.tag = 0;
4925 phba->boot_struct.s_handle = s_handle;
4926 phba->boot_struct.action = BEISCSI_BOOT_GET_SHANDLE;
4927 schedule_work(&phba->boot_work);
4928 }
4929
4930 /**
4931 * Boot flag info for iscsi-utilities
4932 * Bit 0 Block valid flag
4933 * Bit 1 Firmware booting selected
4934 */
4935 #define BEISCSI_SYSFS_ISCSI_BOOT_FLAGS 3
4936
4937 static ssize_t beiscsi_show_boot_tgt_info(void *data, int type, char *buf)
4938 {
4939 struct beiscsi_hba *phba = data;
4940 struct mgmt_session_info *boot_sess = &phba->boot_struct.boot_sess;
4941 struct mgmt_conn_info *boot_conn = &boot_sess->conn_list[0];
4942 char *str = buf;
4943 int rc = -EPERM;
4944
4945 switch (type) {
4946 case ISCSI_BOOT_TGT_NAME:
4947 rc = sprintf(buf, "%.*s\n",
4948 (int)strlen(boot_sess->target_name),
4949 (char *)&boot_sess->target_name);
4950 break;
4951 case ISCSI_BOOT_TGT_IP_ADDR:
4952 if (boot_conn->dest_ipaddr.ip_type == BEISCSI_IP_TYPE_V4)
4953 rc = sprintf(buf, "%pI4\n",
4954 (char *)&boot_conn->dest_ipaddr.addr);
4955 else
4956 rc = sprintf(str, "%pI6\n",
4957 (char *)&boot_conn->dest_ipaddr.addr);
4958 break;
4959 case ISCSI_BOOT_TGT_PORT:
4960 rc = sprintf(str, "%d\n", boot_conn->dest_port);
4961 break;
4962
4963 case ISCSI_BOOT_TGT_CHAP_NAME:
4964 rc = sprintf(str, "%.*s\n",
4965 boot_conn->negotiated_login_options.auth_data.chap.
4966 target_chap_name_length,
4967 (char *)&boot_conn->negotiated_login_options.
4968 auth_data.chap.target_chap_name);
4969 break;
4970 case ISCSI_BOOT_TGT_CHAP_SECRET:
4971 rc = sprintf(str, "%.*s\n",
4972 boot_conn->negotiated_login_options.auth_data.chap.
4973 target_secret_length,
4974 (char *)&boot_conn->negotiated_login_options.
4975 auth_data.chap.target_secret);
4976 break;
4977 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
4978 rc = sprintf(str, "%.*s\n",
4979 boot_conn->negotiated_login_options.auth_data.chap.
4980 intr_chap_name_length,
4981 (char *)&boot_conn->negotiated_login_options.
4982 auth_data.chap.intr_chap_name);
4983 break;
4984 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
4985 rc = sprintf(str, "%.*s\n",
4986 boot_conn->negotiated_login_options.auth_data.chap.
4987 intr_secret_length,
4988 (char *)&boot_conn->negotiated_login_options.
4989 auth_data.chap.intr_secret);
4990 break;
4991 case ISCSI_BOOT_TGT_FLAGS:
4992 rc = sprintf(str, "%d\n", BEISCSI_SYSFS_ISCSI_BOOT_FLAGS);
4993 break;
4994 case ISCSI_BOOT_TGT_NIC_ASSOC:
4995 rc = sprintf(str, "0\n");
4996 break;
4997 }
4998 return rc;
4999 }
5000
5001 static ssize_t beiscsi_show_boot_ini_info(void *data, int type, char *buf)
5002 {
5003 struct beiscsi_hba *phba = data;
5004 char *str = buf;
5005 int rc = -EPERM;
5006
5007 switch (type) {
5008 case ISCSI_BOOT_INI_INITIATOR_NAME:
5009 rc = sprintf(str, "%s\n",
5010 phba->boot_struct.boot_sess.initiator_iscsiname);
5011 break;
5012 }
5013 return rc;
5014 }
5015
5016 static ssize_t beiscsi_show_boot_eth_info(void *data, int type, char *buf)
5017 {
5018 struct beiscsi_hba *phba = data;
5019 char *str = buf;
5020 int rc = -EPERM;
5021
5022 switch (type) {
5023 case ISCSI_BOOT_ETH_FLAGS:
5024 rc = sprintf(str, "%d\n", BEISCSI_SYSFS_ISCSI_BOOT_FLAGS);
5025 break;
5026 case ISCSI_BOOT_ETH_INDEX:
5027 rc = sprintf(str, "0\n");
5028 break;
5029 case ISCSI_BOOT_ETH_MAC:
5030 rc = beiscsi_get_macaddr(str, phba);
5031 break;
5032 }
5033 return rc;
5034 }
5035
5036 static umode_t beiscsi_tgt_get_attr_visibility(void *data, int type)
5037 {
5038 umode_t rc = 0;
5039
5040 switch (type) {
5041 case ISCSI_BOOT_TGT_NAME:
5042 case ISCSI_BOOT_TGT_IP_ADDR:
5043 case ISCSI_BOOT_TGT_PORT:
5044 case ISCSI_BOOT_TGT_CHAP_NAME:
5045 case ISCSI_BOOT_TGT_CHAP_SECRET:
5046 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
5047 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
5048 case ISCSI_BOOT_TGT_NIC_ASSOC:
5049 case ISCSI_BOOT_TGT_FLAGS:
5050 rc = S_IRUGO;
5051 break;
5052 }
5053 return rc;
5054 }
5055
5056 static umode_t beiscsi_ini_get_attr_visibility(void *data, int type)
5057 {
5058 umode_t rc = 0;
5059
5060 switch (type) {
5061 case ISCSI_BOOT_INI_INITIATOR_NAME:
5062 rc = S_IRUGO;
5063 break;
5064 }
5065 return rc;
5066 }
5067
5068 static umode_t beiscsi_eth_get_attr_visibility(void *data, int type)
5069 {
5070 umode_t rc = 0;
5071
5072 switch (type) {
5073 case ISCSI_BOOT_ETH_FLAGS:
5074 case ISCSI_BOOT_ETH_MAC:
5075 case ISCSI_BOOT_ETH_INDEX:
5076 rc = S_IRUGO;
5077 break;
5078 }
5079 return rc;
5080 }
5081
5082 static void beiscsi_boot_kobj_release(void *data)
5083 {
5084 struct beiscsi_hba *phba = data;
5085
5086 scsi_host_put(phba->shost);
5087 }
5088
5089 static int beiscsi_boot_create_kset(struct beiscsi_hba *phba)
5090 {
5091 struct boot_struct *bs = &phba->boot_struct;
5092 struct iscsi_boot_kobj *boot_kobj;
5093
5094 if (bs->boot_kset) {
5095 __beiscsi_log(phba, KERN_ERR,
5096 "BM_%d: boot_kset already created\n");
5097 return 0;
5098 }
5099
5100 bs->boot_kset = iscsi_boot_create_host_kset(phba->shost->host_no);
5101 if (!bs->boot_kset) {
5102 __beiscsi_log(phba, KERN_ERR,
5103 "BM_%d: boot_kset alloc failed\n");
5104 return -ENOMEM;
5105 }
5106
5107 /* get shost ref because the show function will refer phba */
5108 if (!scsi_host_get(phba->shost))
5109 goto free_kset;
5110
5111 boot_kobj = iscsi_boot_create_target(bs->boot_kset, 0, phba,
5112 beiscsi_show_boot_tgt_info,
5113 beiscsi_tgt_get_attr_visibility,
5114 beiscsi_boot_kobj_release);
5115 if (!boot_kobj)
5116 goto put_shost;
5117
5118 if (!scsi_host_get(phba->shost))
5119 goto free_kset;
5120
5121 boot_kobj = iscsi_boot_create_initiator(bs->boot_kset, 0, phba,
5122 beiscsi_show_boot_ini_info,
5123 beiscsi_ini_get_attr_visibility,
5124 beiscsi_boot_kobj_release);
5125 if (!boot_kobj)
5126 goto put_shost;
5127
5128 if (!scsi_host_get(phba->shost))
5129 goto free_kset;
5130
5131 boot_kobj = iscsi_boot_create_ethernet(bs->boot_kset, 0, phba,
5132 beiscsi_show_boot_eth_info,
5133 beiscsi_eth_get_attr_visibility,
5134 beiscsi_boot_kobj_release);
5135 if (!boot_kobj)
5136 goto put_shost;
5137
5138 return 0;
5139
5140 put_shost:
5141 scsi_host_put(phba->shost);
5142 free_kset:
5143 iscsi_boot_destroy_kset(bs->boot_kset);
5144 bs->boot_kset = NULL;
5145 return -ENOMEM;
5146 }
5147
5148 static void beiscsi_boot_work(struct work_struct *work)
5149 {
5150 struct beiscsi_hba *phba =
5151 container_of(work, struct beiscsi_hba, boot_work);
5152 struct boot_struct *bs = &phba->boot_struct;
5153 unsigned int tag = 0;
5154
5155 if (!beiscsi_hba_is_online(phba))
5156 return;
5157
5158 beiscsi_log(phba, KERN_INFO,
5159 BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
5160 "BM_%d : %s action %d\n",
5161 __func__, phba->boot_struct.action);
5162
5163 switch (phba->boot_struct.action) {
5164 case BEISCSI_BOOT_REOPEN_SESS:
5165 tag = beiscsi_boot_reopen_sess(phba);
5166 break;
5167 case BEISCSI_BOOT_GET_SHANDLE:
5168 tag = __beiscsi_boot_get_shandle(phba, 1);
5169 break;
5170 case BEISCSI_BOOT_GET_SINFO:
5171 tag = beiscsi_boot_get_sinfo(phba);
5172 break;
5173 case BEISCSI_BOOT_LOGOUT_SESS:
5174 tag = beiscsi_boot_logout_sess(phba);
5175 break;
5176 case BEISCSI_BOOT_CREATE_KSET:
5177 beiscsi_boot_create_kset(phba);
5178 /**
5179 * updated boot_kset is made visible to all before
5180 * ending the boot work.
5181 */
5182 mb();
5183 clear_bit(BEISCSI_HBA_BOOT_WORK, &phba->state);
5184 return;
5185 }
5186 if (!tag) {
5187 if (bs->retry--)
5188 schedule_work(&phba->boot_work);
5189 else
5190 clear_bit(BEISCSI_HBA_BOOT_WORK, &phba->state);
5191 }
5192 }
5193
5194 static void beiscsi_eqd_update_work(struct work_struct *work)
5195 {
5196 struct hwi_context_memory *phwi_context;
5197 struct be_set_eqd set_eqd[MAX_CPUS];
5198 struct hwi_controller *phwi_ctrlr;
5199 struct be_eq_obj *pbe_eq;
5200 struct beiscsi_hba *phba;
5201 unsigned int pps, delta;
5202 struct be_aic_obj *aic;
5203 int eqd, i, num = 0;
5204 unsigned long now;
5205
5206 phba = container_of(work, struct beiscsi_hba, eqd_update.work);
5207 if (!beiscsi_hba_is_online(phba))
5208 return;
5209
5210 phwi_ctrlr = phba->phwi_ctrlr;
5211 phwi_context = phwi_ctrlr->phwi_ctxt;
5212
5213 for (i = 0; i <= phba->num_cpus; i++) {
5214 aic = &phba->aic_obj[i];
5215 pbe_eq = &phwi_context->be_eq[i];
5216 now = jiffies;
5217 if (!aic->jiffies || time_before(now, aic->jiffies) ||
5218 pbe_eq->cq_count < aic->eq_prev) {
5219 aic->jiffies = now;
5220 aic->eq_prev = pbe_eq->cq_count;
5221 continue;
5222 }
5223 delta = jiffies_to_msecs(now - aic->jiffies);
5224 pps = (((u32)(pbe_eq->cq_count - aic->eq_prev) * 1000) / delta);
5225 eqd = (pps / 1500) << 2;
5226
5227 if (eqd < 8)
5228 eqd = 0;
5229 eqd = min_t(u32, eqd, BEISCSI_EQ_DELAY_MAX);
5230 eqd = max_t(u32, eqd, BEISCSI_EQ_DELAY_MIN);
5231
5232 aic->jiffies = now;
5233 aic->eq_prev = pbe_eq->cq_count;
5234
5235 if (eqd != aic->prev_eqd) {
5236 set_eqd[num].delay_multiplier = (eqd * 65)/100;
5237 set_eqd[num].eq_id = pbe_eq->q.id;
5238 aic->prev_eqd = eqd;
5239 num++;
5240 }
5241 }
5242 if (num)
5243 /* completion of this is ignored */
5244 beiscsi_modify_eq_delay(phba, set_eqd, num);
5245
5246 schedule_delayed_work(&phba->eqd_update,
5247 msecs_to_jiffies(BEISCSI_EQD_UPDATE_INTERVAL));
5248 }
5249
5250 static void beiscsi_hw_tpe_check(struct timer_list *t)
5251 {
5252 struct beiscsi_hba *phba = from_timer(phba, t, hw_check);
5253 u32 wait;
5254
5255 /* if not TPE, do nothing */
5256 if (!beiscsi_detect_tpe(phba))
5257 return;
5258
5259 /* wait default 4000ms before recovering */
5260 wait = 4000;
5261 if (phba->ue2rp > BEISCSI_UE_DETECT_INTERVAL)
5262 wait = phba->ue2rp - BEISCSI_UE_DETECT_INTERVAL;
5263 queue_delayed_work(phba->wq, &phba->recover_port,
5264 msecs_to_jiffies(wait));
5265 }
5266
5267 static void beiscsi_hw_health_check(struct timer_list *t)
5268 {
5269 struct beiscsi_hba *phba = from_timer(phba, t, hw_check);
5270
5271 beiscsi_detect_ue(phba);
5272 if (beiscsi_detect_ue(phba)) {
5273 __beiscsi_log(phba, KERN_ERR,
5274 "BM_%d : port in error: %lx\n", phba->state);
5275 /* sessions are no longer valid, so first fail the sessions */
5276 queue_work(phba->wq, &phba->sess_work);
5277
5278 /* detect UER supported */
5279 if (!test_bit(BEISCSI_HBA_UER_SUPP, &phba->state))
5280 return;
5281 /* modify this timer to check TPE */
5282 phba->hw_check.function = beiscsi_hw_tpe_check;
5283 }
5284
5285 mod_timer(&phba->hw_check,
5286 jiffies + msecs_to_jiffies(BEISCSI_UE_DETECT_INTERVAL));
5287 }
5288
5289 /*
5290 * beiscsi_enable_port()- Enables the disabled port.
5291 * Only port resources freed in disable function are reallocated.
5292 * This is called in HBA error handling path.
5293 *
5294 * @phba: Instance of driver private structure
5295 *
5296 **/
5297 static int beiscsi_enable_port(struct beiscsi_hba *phba)
5298 {
5299 struct hwi_context_memory *phwi_context;
5300 struct hwi_controller *phwi_ctrlr;
5301 struct be_eq_obj *pbe_eq;
5302 int ret, i;
5303
5304 if (test_bit(BEISCSI_HBA_ONLINE, &phba->state)) {
5305 __beiscsi_log(phba, KERN_ERR,
5306 "BM_%d : %s : port is online %lx\n",
5307 __func__, phba->state);
5308 return 0;
5309 }
5310
5311 ret = beiscsi_init_sliport(phba);
5312 if (ret)
5313 return ret;
5314
5315 be2iscsi_enable_msix(phba);
5316
5317 beiscsi_get_params(phba);
5318 beiscsi_set_host_data(phba);
5319 /* Re-enable UER. If different TPE occurs then it is recoverable. */
5320 beiscsi_set_uer_feature(phba);
5321
5322 phba->shost->max_id = phba->params.cxns_per_ctrl;
5323 phba->shost->can_queue = phba->params.ios_per_ctrl;
5324 ret = beiscsi_init_port(phba);
5325 if (ret < 0) {
5326 __beiscsi_log(phba, KERN_ERR,
5327 "BM_%d : init port failed\n");
5328 goto disable_msix;
5329 }
5330
5331 for (i = 0; i < MAX_MCC_CMD; i++) {
5332 init_waitqueue_head(&phba->ctrl.mcc_wait[i + 1]);
5333 phba->ctrl.mcc_tag[i] = i + 1;
5334 phba->ctrl.mcc_tag_status[i + 1] = 0;
5335 phba->ctrl.mcc_tag_available++;
5336 }
5337
5338 phwi_ctrlr = phba->phwi_ctrlr;
5339 phwi_context = phwi_ctrlr->phwi_ctxt;
5340 for (i = 0; i < phba->num_cpus; i++) {
5341 pbe_eq = &phwi_context->be_eq[i];
5342 irq_poll_init(&pbe_eq->iopoll, be_iopoll_budget, be_iopoll);
5343 }
5344
5345 i = (phba->pcidev->msix_enabled) ? i : 0;
5346 /* Work item for MCC handling */
5347 pbe_eq = &phwi_context->be_eq[i];
5348 INIT_WORK(&pbe_eq->mcc_work, beiscsi_mcc_work);
5349
5350 ret = beiscsi_init_irqs(phba);
5351 if (ret < 0) {
5352 __beiscsi_log(phba, KERN_ERR,
5353 "BM_%d : setup IRQs failed %d\n", ret);
5354 goto cleanup_port;
5355 }
5356 hwi_enable_intr(phba);
5357 /* port operational: clear all error bits */
5358 set_bit(BEISCSI_HBA_ONLINE, &phba->state);
5359 __beiscsi_log(phba, KERN_INFO,
5360 "BM_%d : port online: 0x%lx\n", phba->state);
5361
5362 /* start hw_check timer and eqd_update work */
5363 schedule_delayed_work(&phba->eqd_update,
5364 msecs_to_jiffies(BEISCSI_EQD_UPDATE_INTERVAL));
5365
5366 /**
5367 * Timer function gets modified for TPE detection.
5368 * Always reinit to do health check first.
5369 */
5370 phba->hw_check.function = beiscsi_hw_health_check;
5371 mod_timer(&phba->hw_check,
5372 jiffies + msecs_to_jiffies(BEISCSI_UE_DETECT_INTERVAL));
5373 return 0;
5374
5375 cleanup_port:
5376 for (i = 0; i < phba->num_cpus; i++) {
5377 pbe_eq = &phwi_context->be_eq[i];
5378 irq_poll_disable(&pbe_eq->iopoll);
5379 }
5380 hwi_cleanup_port(phba);
5381
5382 disable_msix:
5383 pci_free_irq_vectors(phba->pcidev);
5384 return ret;
5385 }
5386
5387 /*
5388 * beiscsi_disable_port()- Disable port and cleanup driver resources.
5389 * This is called in HBA error handling and driver removal.
5390 * @phba: Instance Priv structure
5391 * @unload: indicate driver is unloading
5392 *
5393 * Free the OS and HW resources held by the driver
5394 **/
5395 static void beiscsi_disable_port(struct beiscsi_hba *phba, int unload)
5396 {
5397 struct hwi_context_memory *phwi_context;
5398 struct hwi_controller *phwi_ctrlr;
5399 struct be_eq_obj *pbe_eq;
5400 unsigned int i;
5401
5402 if (!test_and_clear_bit(BEISCSI_HBA_ONLINE, &phba->state))
5403 return;
5404
5405 phwi_ctrlr = phba->phwi_ctrlr;
5406 phwi_context = phwi_ctrlr->phwi_ctxt;
5407 hwi_disable_intr(phba);
5408 beiscsi_free_irqs(phba);
5409 pci_free_irq_vectors(phba->pcidev);
5410
5411 for (i = 0; i < phba->num_cpus; i++) {
5412 pbe_eq = &phwi_context->be_eq[i];
5413 irq_poll_disable(&pbe_eq->iopoll);
5414 }
5415 cancel_delayed_work_sync(&phba->eqd_update);
5416 cancel_work_sync(&phba->boot_work);
5417 /* WQ might be running cancel queued mcc_work if we are not exiting */
5418 if (!unload && beiscsi_hba_in_error(phba)) {
5419 pbe_eq = &phwi_context->be_eq[i];
5420 cancel_work_sync(&pbe_eq->mcc_work);
5421 }
5422 hwi_cleanup_port(phba);
5423 beiscsi_cleanup_port(phba);
5424 }
5425
5426 static void beiscsi_sess_work(struct work_struct *work)
5427 {
5428 struct beiscsi_hba *phba;
5429
5430 phba = container_of(work, struct beiscsi_hba, sess_work);
5431 /*
5432 * This work gets scheduled only in case of HBA error.
5433 * Old sessions are gone so need to be re-established.
5434 * iscsi_session_failure needs process context hence this work.
5435 */
5436 iscsi_host_for_each_session(phba->shost, beiscsi_session_fail);
5437 }
5438
5439 static void beiscsi_recover_port(struct work_struct *work)
5440 {
5441 struct beiscsi_hba *phba;
5442
5443 phba = container_of(work, struct beiscsi_hba, recover_port.work);
5444 beiscsi_disable_port(phba, 0);
5445 beiscsi_enable_port(phba);
5446 }
5447
5448 static pci_ers_result_t beiscsi_eeh_err_detected(struct pci_dev *pdev,
5449 pci_channel_state_t state)
5450 {
5451 struct beiscsi_hba *phba = NULL;
5452
5453 phba = (struct beiscsi_hba *)pci_get_drvdata(pdev);
5454 set_bit(BEISCSI_HBA_PCI_ERR, &phba->state);
5455
5456 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5457 "BM_%d : EEH error detected\n");
5458
5459 /* first stop UE detection when PCI error detected */
5460 del_timer_sync(&phba->hw_check);
5461 cancel_delayed_work_sync(&phba->recover_port);
5462
5463 /* sessions are no longer valid, so first fail the sessions */
5464 iscsi_host_for_each_session(phba->shost, beiscsi_session_fail);
5465 beiscsi_disable_port(phba, 0);
5466
5467 if (state == pci_channel_io_perm_failure) {
5468 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5469 "BM_%d : EEH : State PERM Failure");
5470 return PCI_ERS_RESULT_DISCONNECT;
5471 }
5472
5473 pci_disable_device(pdev);
5474
5475 /* The error could cause the FW to trigger a flash debug dump.
5476 * Resetting the card while flash dump is in progress
5477 * can cause it not to recover; wait for it to finish.
5478 * Wait only for first function as it is needed only once per
5479 * adapter.
5480 **/
5481 if (pdev->devfn == 0)
5482 ssleep(30);
5483
5484 return PCI_ERS_RESULT_NEED_RESET;
5485 }
5486
5487 static pci_ers_result_t beiscsi_eeh_reset(struct pci_dev *pdev)
5488 {
5489 struct beiscsi_hba *phba = NULL;
5490 int status = 0;
5491
5492 phba = (struct beiscsi_hba *)pci_get_drvdata(pdev);
5493
5494 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5495 "BM_%d : EEH Reset\n");
5496
5497 status = pci_enable_device(pdev);
5498 if (status)
5499 return PCI_ERS_RESULT_DISCONNECT;
5500
5501 pci_set_master(pdev);
5502 pci_set_power_state(pdev, PCI_D0);
5503 pci_restore_state(pdev);
5504
5505 status = beiscsi_check_fw_rdy(phba);
5506 if (status) {
5507 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_INIT,
5508 "BM_%d : EEH Reset Completed\n");
5509 } else {
5510 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_INIT,
5511 "BM_%d : EEH Reset Completion Failure\n");
5512 return PCI_ERS_RESULT_DISCONNECT;
5513 }
5514
5515 pci_cleanup_aer_uncorrect_error_status(pdev);
5516 return PCI_ERS_RESULT_RECOVERED;
5517 }
5518
5519 static void beiscsi_eeh_resume(struct pci_dev *pdev)
5520 {
5521 struct beiscsi_hba *phba;
5522 int ret;
5523
5524 phba = (struct beiscsi_hba *)pci_get_drvdata(pdev);
5525 pci_save_state(pdev);
5526
5527 ret = beiscsi_enable_port(phba);
5528 if (ret)
5529 __beiscsi_log(phba, KERN_ERR,
5530 "BM_%d : AER EEH resume failed\n");
5531 }
5532
5533 static int beiscsi_dev_probe(struct pci_dev *pcidev,
5534 const struct pci_device_id *id)
5535 {
5536 struct hwi_context_memory *phwi_context;
5537 struct hwi_controller *phwi_ctrlr;
5538 struct beiscsi_hba *phba = NULL;
5539 struct be_eq_obj *pbe_eq;
5540 unsigned int s_handle;
5541 char wq_name[20];
5542 int ret, i;
5543
5544 ret = beiscsi_enable_pci(pcidev);
5545 if (ret < 0) {
5546 dev_err(&pcidev->dev,
5547 "beiscsi_dev_probe - Failed to enable pci device\n");
5548 return ret;
5549 }
5550
5551 phba = beiscsi_hba_alloc(pcidev);
5552 if (!phba) {
5553 dev_err(&pcidev->dev,
5554 "beiscsi_dev_probe - Failed in beiscsi_hba_alloc\n");
5555 ret = -ENOMEM;
5556 goto disable_pci;
5557 }
5558
5559 /* Enable EEH reporting */
5560 ret = pci_enable_pcie_error_reporting(pcidev);
5561 if (ret)
5562 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_INIT,
5563 "BM_%d : PCIe Error Reporting "
5564 "Enabling Failed\n");
5565
5566 pci_save_state(pcidev);
5567
5568 /* Initialize Driver configuration Paramters */
5569 beiscsi_hba_attrs_init(phba);
5570
5571 phba->mac_addr_set = false;
5572
5573 switch (pcidev->device) {
5574 case BE_DEVICE_ID1:
5575 case OC_DEVICE_ID1:
5576 case OC_DEVICE_ID2:
5577 phba->generation = BE_GEN2;
5578 phba->iotask_fn = beiscsi_iotask;
5579 dev_warn(&pcidev->dev,
5580 "Obsolete/Unsupported BE2 Adapter Family\n");
5581 break;
5582 case BE_DEVICE_ID2:
5583 case OC_DEVICE_ID3:
5584 phba->generation = BE_GEN3;
5585 phba->iotask_fn = beiscsi_iotask;
5586 break;
5587 case OC_SKH_ID1:
5588 phba->generation = BE_GEN4;
5589 phba->iotask_fn = beiscsi_iotask_v2;
5590 break;
5591 default:
5592 phba->generation = 0;
5593 }
5594
5595 ret = be_ctrl_init(phba, pcidev);
5596 if (ret) {
5597 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5598 "BM_%d : be_ctrl_init failed\n");
5599 goto free_hba;
5600 }
5601
5602 ret = beiscsi_init_sliport(phba);
5603 if (ret)
5604 goto free_hba;
5605
5606 spin_lock_init(&phba->io_sgl_lock);
5607 spin_lock_init(&phba->mgmt_sgl_lock);
5608 spin_lock_init(&phba->async_pdu_lock);
5609 ret = beiscsi_get_fw_config(&phba->ctrl, phba);
5610 if (ret != 0) {
5611 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5612 "BM_%d : Error getting fw config\n");
5613 goto free_port;
5614 }
5615 beiscsi_get_port_name(&phba->ctrl, phba);
5616 beiscsi_get_params(phba);
5617 beiscsi_set_host_data(phba);
5618 beiscsi_set_uer_feature(phba);
5619
5620 be2iscsi_enable_msix(phba);
5621
5622 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
5623 "BM_%d : num_cpus = %d\n",
5624 phba->num_cpus);
5625
5626 phba->shost->max_id = phba->params.cxns_per_ctrl;
5627 phba->shost->can_queue = phba->params.ios_per_ctrl;
5628 ret = beiscsi_get_memory(phba);
5629 if (ret < 0) {
5630 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5631 "BM_%d : alloc host mem failed\n");
5632 goto free_port;
5633 }
5634
5635 ret = beiscsi_init_port(phba);
5636 if (ret < 0) {
5637 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5638 "BM_%d : init port failed\n");
5639 beiscsi_free_mem(phba);
5640 goto free_port;
5641 }
5642
5643 for (i = 0; i < MAX_MCC_CMD; i++) {
5644 init_waitqueue_head(&phba->ctrl.mcc_wait[i + 1]);
5645 phba->ctrl.mcc_tag[i] = i + 1;
5646 phba->ctrl.mcc_tag_status[i + 1] = 0;
5647 phba->ctrl.mcc_tag_available++;
5648 memset(&phba->ctrl.ptag_state[i].tag_mem_state, 0,
5649 sizeof(struct be_dma_mem));
5650 }
5651
5652 phba->ctrl.mcc_alloc_index = phba->ctrl.mcc_free_index = 0;
5653
5654 snprintf(wq_name, sizeof(wq_name), "beiscsi_%02x_wq",
5655 phba->shost->host_no);
5656 phba->wq = alloc_workqueue("%s", WQ_MEM_RECLAIM, 1, wq_name);
5657 if (!phba->wq) {
5658 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5659 "BM_%d : beiscsi_dev_probe-"
5660 "Failed to allocate work queue\n");
5661 ret = -ENOMEM;
5662 goto free_twq;
5663 }
5664
5665 INIT_DELAYED_WORK(&phba->eqd_update, beiscsi_eqd_update_work);
5666
5667 phwi_ctrlr = phba->phwi_ctrlr;
5668 phwi_context = phwi_ctrlr->phwi_ctxt;
5669
5670 for (i = 0; i < phba->num_cpus; i++) {
5671 pbe_eq = &phwi_context->be_eq[i];
5672 irq_poll_init(&pbe_eq->iopoll, be_iopoll_budget, be_iopoll);
5673 }
5674
5675 i = (phba->pcidev->msix_enabled) ? i : 0;
5676 /* Work item for MCC handling */
5677 pbe_eq = &phwi_context->be_eq[i];
5678 INIT_WORK(&pbe_eq->mcc_work, beiscsi_mcc_work);
5679
5680 ret = beiscsi_init_irqs(phba);
5681 if (ret < 0) {
5682 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5683 "BM_%d : beiscsi_dev_probe-"
5684 "Failed to beiscsi_init_irqs\n");
5685 goto disable_iopoll;
5686 }
5687 hwi_enable_intr(phba);
5688
5689 ret = iscsi_host_add(phba->shost, &phba->pcidev->dev);
5690 if (ret)
5691 goto free_irqs;
5692
5693 /* set online bit after port is operational */
5694 set_bit(BEISCSI_HBA_ONLINE, &phba->state);
5695 __beiscsi_log(phba, KERN_INFO,
5696 "BM_%d : port online: 0x%lx\n", phba->state);
5697
5698 INIT_WORK(&phba->boot_work, beiscsi_boot_work);
5699 ret = beiscsi_boot_get_shandle(phba, &s_handle);
5700 if (ret > 0) {
5701 beiscsi_start_boot_work(phba, s_handle);
5702 /**
5703 * Set this bit after starting the work to let
5704 * probe handle it first.
5705 * ASYNC event can too schedule this work.
5706 */
5707 set_bit(BEISCSI_HBA_BOOT_FOUND, &phba->state);
5708 }
5709
5710 beiscsi_iface_create_default(phba);
5711 schedule_delayed_work(&phba->eqd_update,
5712 msecs_to_jiffies(BEISCSI_EQD_UPDATE_INTERVAL));
5713
5714 INIT_WORK(&phba->sess_work, beiscsi_sess_work);
5715 INIT_DELAYED_WORK(&phba->recover_port, beiscsi_recover_port);
5716 /**
5717 * Start UE detection here. UE before this will cause stall in probe
5718 * and eventually fail the probe.
5719 */
5720 timer_setup(&phba->hw_check, beiscsi_hw_health_check, 0);
5721 mod_timer(&phba->hw_check,
5722 jiffies + msecs_to_jiffies(BEISCSI_UE_DETECT_INTERVAL));
5723 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
5724 "\n\n\n BM_%d : SUCCESS - DRIVER LOADED\n\n\n");
5725 return 0;
5726
5727 free_irqs:
5728 hwi_disable_intr(phba);
5729 beiscsi_free_irqs(phba);
5730 disable_iopoll:
5731 for (i = 0; i < phba->num_cpus; i++) {
5732 pbe_eq = &phwi_context->be_eq[i];
5733 irq_poll_disable(&pbe_eq->iopoll);
5734 }
5735 destroy_workqueue(phba->wq);
5736 free_twq:
5737 hwi_cleanup_port(phba);
5738 beiscsi_cleanup_port(phba);
5739 beiscsi_free_mem(phba);
5740 free_port:
5741 pci_free_consistent(phba->pcidev,
5742 phba->ctrl.mbox_mem_alloced.size,
5743 phba->ctrl.mbox_mem_alloced.va,
5744 phba->ctrl.mbox_mem_alloced.dma);
5745 beiscsi_unmap_pci_function(phba);
5746 free_hba:
5747 pci_disable_msix(phba->pcidev);
5748 pci_dev_put(phba->pcidev);
5749 iscsi_host_free(phba->shost);
5750 pci_set_drvdata(pcidev, NULL);
5751 disable_pci:
5752 pci_release_regions(pcidev);
5753 pci_disable_device(pcidev);
5754 return ret;
5755 }
5756
5757 static void beiscsi_remove(struct pci_dev *pcidev)
5758 {
5759 struct beiscsi_hba *phba = NULL;
5760
5761 phba = pci_get_drvdata(pcidev);
5762 if (!phba) {
5763 dev_err(&pcidev->dev, "beiscsi_remove called with no phba\n");
5764 return;
5765 }
5766
5767 /* first stop UE detection before unloading */
5768 del_timer_sync(&phba->hw_check);
5769 cancel_delayed_work_sync(&phba->recover_port);
5770 cancel_work_sync(&phba->sess_work);
5771
5772 beiscsi_iface_destroy_default(phba);
5773 iscsi_host_remove(phba->shost);
5774 beiscsi_disable_port(phba, 1);
5775
5776 /* after cancelling boot_work */
5777 iscsi_boot_destroy_kset(phba->boot_struct.boot_kset);
5778
5779 /* free all resources */
5780 destroy_workqueue(phba->wq);
5781 beiscsi_free_mem(phba);
5782
5783 /* ctrl uninit */
5784 beiscsi_unmap_pci_function(phba);
5785 pci_free_consistent(phba->pcidev,
5786 phba->ctrl.mbox_mem_alloced.size,
5787 phba->ctrl.mbox_mem_alloced.va,
5788 phba->ctrl.mbox_mem_alloced.dma);
5789
5790 pci_dev_put(phba->pcidev);
5791 iscsi_host_free(phba->shost);
5792 pci_disable_pcie_error_reporting(pcidev);
5793 pci_set_drvdata(pcidev, NULL);
5794 pci_release_regions(pcidev);
5795 pci_disable_device(pcidev);
5796 }
5797
5798
5799 static struct pci_error_handlers beiscsi_eeh_handlers = {
5800 .error_detected = beiscsi_eeh_err_detected,
5801 .slot_reset = beiscsi_eeh_reset,
5802 .resume = beiscsi_eeh_resume,
5803 };
5804
5805 struct iscsi_transport beiscsi_iscsi_transport = {
5806 .owner = THIS_MODULE,
5807 .name = DRV_NAME,
5808 .caps = CAP_RECOVERY_L0 | CAP_HDRDGST | CAP_TEXT_NEGO |
5809 CAP_MULTI_R2T | CAP_DATADGST | CAP_DATA_PATH_OFFLOAD,
5810 .create_session = beiscsi_session_create,
5811 .destroy_session = beiscsi_session_destroy,
5812 .create_conn = beiscsi_conn_create,
5813 .bind_conn = beiscsi_conn_bind,
5814 .destroy_conn = iscsi_conn_teardown,
5815 .attr_is_visible = beiscsi_attr_is_visible,
5816 .set_iface_param = beiscsi_iface_set_param,
5817 .get_iface_param = beiscsi_iface_get_param,
5818 .set_param = beiscsi_set_param,
5819 .get_conn_param = iscsi_conn_get_param,
5820 .get_session_param = iscsi_session_get_param,
5821 .get_host_param = beiscsi_get_host_param,
5822 .start_conn = beiscsi_conn_start,
5823 .stop_conn = iscsi_conn_stop,
5824 .send_pdu = iscsi_conn_send_pdu,
5825 .xmit_task = beiscsi_task_xmit,
5826 .cleanup_task = beiscsi_cleanup_task,
5827 .alloc_pdu = beiscsi_alloc_pdu,
5828 .parse_pdu_itt = beiscsi_parse_pdu,
5829 .get_stats = beiscsi_conn_get_stats,
5830 .get_ep_param = beiscsi_ep_get_param,
5831 .ep_connect = beiscsi_ep_connect,
5832 .ep_poll = beiscsi_ep_poll,
5833 .ep_disconnect = beiscsi_ep_disconnect,
5834 .session_recovery_timedout = iscsi_session_recovery_timedout,
5835 .bsg_request = beiscsi_bsg_request,
5836 };
5837
5838 static struct pci_driver beiscsi_pci_driver = {
5839 .name = DRV_NAME,
5840 .probe = beiscsi_dev_probe,
5841 .remove = beiscsi_remove,
5842 .id_table = beiscsi_pci_id_table,
5843 .err_handler = &beiscsi_eeh_handlers
5844 };
5845
5846 static int __init beiscsi_module_init(void)
5847 {
5848 int ret;
5849
5850 beiscsi_scsi_transport =
5851 iscsi_register_transport(&beiscsi_iscsi_transport);
5852 if (!beiscsi_scsi_transport) {
5853 printk(KERN_ERR
5854 "beiscsi_module_init - Unable to register beiscsi transport.\n");
5855 return -ENOMEM;
5856 }
5857 printk(KERN_INFO "In beiscsi_module_init, tt=%p\n",
5858 &beiscsi_iscsi_transport);
5859
5860 ret = pci_register_driver(&beiscsi_pci_driver);
5861 if (ret) {
5862 printk(KERN_ERR
5863 "beiscsi_module_init - Unable to register beiscsi pci driver.\n");
5864 goto unregister_iscsi_transport;
5865 }
5866 return 0;
5867
5868 unregister_iscsi_transport:
5869 iscsi_unregister_transport(&beiscsi_iscsi_transport);
5870 return ret;
5871 }
5872
5873 static void __exit beiscsi_module_exit(void)
5874 {
5875 pci_unregister_driver(&beiscsi_pci_driver);
5876 iscsi_unregister_transport(&beiscsi_iscsi_transport);
5877 }
5878
5879 module_init(beiscsi_module_init);
5880 module_exit(beiscsi_module_exit);
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