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[SCSI] megaraid_sas: Add support for MegaRAID Fury (device ID-0x005f) 12Gb/s controllers
[deliverable/linux.git] / drivers / scsi / megaraid / megaraid_sas_fusion.c
1 /*
2 * Linux MegaRAID driver for SAS based RAID controllers
3 *
4 * Copyright (c) 2009-2012 LSI Corporation.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 *
20 * FILE: megaraid_sas_fusion.c
21 *
22 * Authors: LSI Corporation
23 * Sumant Patro
24 * Adam Radford <linuxraid@lsi.com>
25 *
26 * Send feedback to: <megaraidlinux@lsi.com>
27 *
28 * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035
29 * ATTN: Linuxraid
30 */
31
32 #include <linux/kernel.h>
33 #include <linux/types.h>
34 #include <linux/pci.h>
35 #include <linux/list.h>
36 #include <linux/moduleparam.h>
37 #include <linux/module.h>
38 #include <linux/spinlock.h>
39 #include <linux/interrupt.h>
40 #include <linux/delay.h>
41 #include <linux/uio.h>
42 #include <linux/uaccess.h>
43 #include <linux/fs.h>
44 #include <linux/compat.h>
45 #include <linux/blkdev.h>
46 #include <linux/mutex.h>
47 #include <linux/poll.h>
48
49 #include <scsi/scsi.h>
50 #include <scsi/scsi_cmnd.h>
51 #include <scsi/scsi_device.h>
52 #include <scsi/scsi_host.h>
53
54 #include "megaraid_sas_fusion.h"
55 #include "megaraid_sas.h"
56
57 extern void megasas_free_cmds(struct megasas_instance *instance);
58 extern struct megasas_cmd *megasas_get_cmd(struct megasas_instance
59 *instance);
60 extern void
61 megasas_complete_cmd(struct megasas_instance *instance,
62 struct megasas_cmd *cmd, u8 alt_status);
63 int megasas_is_ldio(struct scsi_cmnd *cmd);
64 int
65 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd);
66
67 void
68 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd);
69 int megasas_alloc_cmds(struct megasas_instance *instance);
70 int
71 megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs);
72 int
73 megasas_issue_polled(struct megasas_instance *instance,
74 struct megasas_cmd *cmd);
75
76 u8
77 MR_BuildRaidContext(struct megasas_instance *instance,
78 struct IO_REQUEST_INFO *io_info,
79 struct RAID_CONTEXT *pRAID_Context,
80 struct MR_FW_RAID_MAP_ALL *map);
81 u16 MR_TargetIdToLdGet(u32 ldTgtId, struct MR_FW_RAID_MAP_ALL *map);
82 struct MR_LD_RAID *MR_LdRaidGet(u32 ld, struct MR_FW_RAID_MAP_ALL *map);
83
84 u16 MR_GetLDTgtId(u32 ld, struct MR_FW_RAID_MAP_ALL *map);
85
86 void
87 megasas_check_and_restore_queue_depth(struct megasas_instance *instance);
88
89 u8 MR_ValidateMapInfo(struct MR_FW_RAID_MAP_ALL *map,
90 struct LD_LOAD_BALANCE_INFO *lbInfo);
91 u16 get_updated_dev_handle(struct LD_LOAD_BALANCE_INFO *lbInfo,
92 struct IO_REQUEST_INFO *in_info);
93 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
94 void megaraid_sas_kill_hba(struct megasas_instance *instance);
95
96 extern u32 megasas_dbg_lvl;
97 extern int resetwaittime;
98
99 /**
100 * megasas_enable_intr_fusion - Enables interrupts
101 * @regs: MFI register set
102 */
103 void
104 megasas_enable_intr_fusion(struct megasas_register_set __iomem *regs)
105 {
106 /* For Thunderbolt/Invader also clear intr on enable */
107 writel(~0, &regs->outbound_intr_status);
108 readl(&regs->outbound_intr_status);
109
110 writel(~MFI_FUSION_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
111
112 /* Dummy readl to force pci flush */
113 readl(&regs->outbound_intr_mask);
114 }
115
116 /**
117 * megasas_disable_intr_fusion - Disables interrupt
118 * @regs: MFI register set
119 */
120 void
121 megasas_disable_intr_fusion(struct megasas_register_set __iomem *regs)
122 {
123 u32 mask = 0xFFFFFFFF;
124 u32 status;
125
126 writel(mask, &regs->outbound_intr_mask);
127 /* Dummy readl to force pci flush */
128 status = readl(&regs->outbound_intr_mask);
129 }
130
131 int
132 megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs)
133 {
134 u32 status;
135 /*
136 * Check if it is our interrupt
137 */
138 status = readl(&regs->outbound_intr_status);
139
140 if (status & 1) {
141 writel(status, &regs->outbound_intr_status);
142 readl(&regs->outbound_intr_status);
143 return 1;
144 }
145 if (!(status & MFI_FUSION_ENABLE_INTERRUPT_MASK))
146 return 0;
147
148 return 1;
149 }
150
151 /**
152 * megasas_get_cmd_fusion - Get a command from the free pool
153 * @instance: Adapter soft state
154 *
155 * Returns a free command from the pool
156 */
157 struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance
158 *instance)
159 {
160 unsigned long flags;
161 struct fusion_context *fusion =
162 (struct fusion_context *)instance->ctrl_context;
163 struct megasas_cmd_fusion *cmd = NULL;
164
165 spin_lock_irqsave(&fusion->cmd_pool_lock, flags);
166
167 if (!list_empty(&fusion->cmd_pool)) {
168 cmd = list_entry((&fusion->cmd_pool)->next,
169 struct megasas_cmd_fusion, list);
170 list_del_init(&cmd->list);
171 } else {
172 printk(KERN_ERR "megasas: Command pool (fusion) empty!\n");
173 }
174
175 spin_unlock_irqrestore(&fusion->cmd_pool_lock, flags);
176 return cmd;
177 }
178
179 /**
180 * megasas_return_cmd_fusion - Return a cmd to free command pool
181 * @instance: Adapter soft state
182 * @cmd: Command packet to be returned to free command pool
183 */
184 static inline void
185 megasas_return_cmd_fusion(struct megasas_instance *instance,
186 struct megasas_cmd_fusion *cmd)
187 {
188 unsigned long flags;
189 struct fusion_context *fusion =
190 (struct fusion_context *)instance->ctrl_context;
191
192 spin_lock_irqsave(&fusion->cmd_pool_lock, flags);
193
194 cmd->scmd = NULL;
195 cmd->sync_cmd_idx = (u32)ULONG_MAX;
196 list_add_tail(&cmd->list, &fusion->cmd_pool);
197
198 spin_unlock_irqrestore(&fusion->cmd_pool_lock, flags);
199 }
200
201 /**
202 * megasas_teardown_frame_pool_fusion - Destroy the cmd frame DMA pool
203 * @instance: Adapter soft state
204 */
205 static void megasas_teardown_frame_pool_fusion(
206 struct megasas_instance *instance)
207 {
208 int i;
209 struct fusion_context *fusion = instance->ctrl_context;
210
211 u16 max_cmd = instance->max_fw_cmds;
212
213 struct megasas_cmd_fusion *cmd;
214
215 if (!fusion->sg_dma_pool || !fusion->sense_dma_pool) {
216 printk(KERN_ERR "megasas: dma pool is null. SG Pool %p, "
217 "sense pool : %p\n", fusion->sg_dma_pool,
218 fusion->sense_dma_pool);
219 return;
220 }
221
222 /*
223 * Return all frames to pool
224 */
225 for (i = 0; i < max_cmd; i++) {
226
227 cmd = fusion->cmd_list[i];
228
229 if (cmd->sg_frame)
230 pci_pool_free(fusion->sg_dma_pool, cmd->sg_frame,
231 cmd->sg_frame_phys_addr);
232
233 if (cmd->sense)
234 pci_pool_free(fusion->sense_dma_pool, cmd->sense,
235 cmd->sense_phys_addr);
236 }
237
238 /*
239 * Now destroy the pool itself
240 */
241 pci_pool_destroy(fusion->sg_dma_pool);
242 pci_pool_destroy(fusion->sense_dma_pool);
243
244 fusion->sg_dma_pool = NULL;
245 fusion->sense_dma_pool = NULL;
246 }
247
248 /**
249 * megasas_free_cmds_fusion - Free all the cmds in the free cmd pool
250 * @instance: Adapter soft state
251 */
252 void
253 megasas_free_cmds_fusion(struct megasas_instance *instance)
254 {
255 int i;
256 struct fusion_context *fusion = instance->ctrl_context;
257
258 u32 max_cmds, req_sz, reply_sz, io_frames_sz;
259
260
261 req_sz = fusion->request_alloc_sz;
262 reply_sz = fusion->reply_alloc_sz;
263 io_frames_sz = fusion->io_frames_alloc_sz;
264
265 max_cmds = instance->max_fw_cmds;
266
267 /* Free descriptors and request Frames memory */
268 if (fusion->req_frames_desc)
269 dma_free_coherent(&instance->pdev->dev, req_sz,
270 fusion->req_frames_desc,
271 fusion->req_frames_desc_phys);
272
273 if (fusion->reply_frames_desc) {
274 pci_pool_free(fusion->reply_frames_desc_pool,
275 fusion->reply_frames_desc,
276 fusion->reply_frames_desc_phys);
277 pci_pool_destroy(fusion->reply_frames_desc_pool);
278 }
279
280 if (fusion->io_request_frames) {
281 pci_pool_free(fusion->io_request_frames_pool,
282 fusion->io_request_frames,
283 fusion->io_request_frames_phys);
284 pci_pool_destroy(fusion->io_request_frames_pool);
285 }
286
287 /* Free the Fusion frame pool */
288 megasas_teardown_frame_pool_fusion(instance);
289
290 /* Free all the commands in the cmd_list */
291 for (i = 0; i < max_cmds; i++)
292 kfree(fusion->cmd_list[i]);
293
294 /* Free the cmd_list buffer itself */
295 kfree(fusion->cmd_list);
296 fusion->cmd_list = NULL;
297
298 INIT_LIST_HEAD(&fusion->cmd_pool);
299 }
300
301 /**
302 * megasas_create_frame_pool_fusion - Creates DMA pool for cmd frames
303 * @instance: Adapter soft state
304 *
305 */
306 static int megasas_create_frame_pool_fusion(struct megasas_instance *instance)
307 {
308 int i;
309 u32 max_cmd;
310 struct fusion_context *fusion;
311 struct megasas_cmd_fusion *cmd;
312 u32 total_sz_chain_frame;
313
314 fusion = instance->ctrl_context;
315 max_cmd = instance->max_fw_cmds;
316
317 total_sz_chain_frame = MEGASAS_MAX_SZ_CHAIN_FRAME;
318
319 /*
320 * Use DMA pool facility provided by PCI layer
321 */
322
323 fusion->sg_dma_pool = pci_pool_create("megasas sg pool fusion",
324 instance->pdev,
325 total_sz_chain_frame, 4,
326 0);
327 if (!fusion->sg_dma_pool) {
328 printk(KERN_DEBUG "megasas: failed to setup request pool "
329 "fusion\n");
330 return -ENOMEM;
331 }
332 fusion->sense_dma_pool = pci_pool_create("megasas sense pool fusion",
333 instance->pdev,
334 SCSI_SENSE_BUFFERSIZE, 64, 0);
335
336 if (!fusion->sense_dma_pool) {
337 printk(KERN_DEBUG "megasas: failed to setup sense pool "
338 "fusion\n");
339 pci_pool_destroy(fusion->sg_dma_pool);
340 fusion->sg_dma_pool = NULL;
341 return -ENOMEM;
342 }
343
344 /*
345 * Allocate and attach a frame to each of the commands in cmd_list
346 */
347 for (i = 0; i < max_cmd; i++) {
348
349 cmd = fusion->cmd_list[i];
350
351 cmd->sg_frame = pci_pool_alloc(fusion->sg_dma_pool,
352 GFP_KERNEL,
353 &cmd->sg_frame_phys_addr);
354
355 cmd->sense = pci_pool_alloc(fusion->sense_dma_pool,
356 GFP_KERNEL, &cmd->sense_phys_addr);
357 /*
358 * megasas_teardown_frame_pool_fusion() takes care of freeing
359 * whatever has been allocated
360 */
361 if (!cmd->sg_frame || !cmd->sense) {
362 printk(KERN_DEBUG "megasas: pci_pool_alloc failed\n");
363 megasas_teardown_frame_pool_fusion(instance);
364 return -ENOMEM;
365 }
366 }
367 return 0;
368 }
369
370 /**
371 * megasas_alloc_cmds_fusion - Allocates the command packets
372 * @instance: Adapter soft state
373 *
374 *
375 * Each frame has a 32-bit field called context. This context is used to get
376 * back the megasas_cmd_fusion from the frame when a frame gets completed
377 * In this driver, the 32 bit values are the indices into an array cmd_list.
378 * This array is used only to look up the megasas_cmd_fusion given the context.
379 * The free commands themselves are maintained in a linked list called cmd_pool.
380 *
381 * cmds are formed in the io_request and sg_frame members of the
382 * megasas_cmd_fusion. The context field is used to get a request descriptor
383 * and is used as SMID of the cmd.
384 * SMID value range is from 1 to max_fw_cmds.
385 */
386 int
387 megasas_alloc_cmds_fusion(struct megasas_instance *instance)
388 {
389 int i, j, count;
390 u32 max_cmd, io_frames_sz;
391 struct fusion_context *fusion;
392 struct megasas_cmd_fusion *cmd;
393 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
394 u32 offset;
395 dma_addr_t io_req_base_phys;
396 u8 *io_req_base;
397
398 fusion = instance->ctrl_context;
399
400 max_cmd = instance->max_fw_cmds;
401
402 fusion->req_frames_desc =
403 dma_alloc_coherent(&instance->pdev->dev,
404 fusion->request_alloc_sz,
405 &fusion->req_frames_desc_phys, GFP_KERNEL);
406
407 if (!fusion->req_frames_desc) {
408 printk(KERN_ERR "megasas; Could not allocate memory for "
409 "request_frames\n");
410 goto fail_req_desc;
411 }
412
413 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
414 fusion->reply_frames_desc_pool =
415 pci_pool_create("reply_frames pool", instance->pdev,
416 fusion->reply_alloc_sz * count, 16, 0);
417
418 if (!fusion->reply_frames_desc_pool) {
419 printk(KERN_ERR "megasas; Could not allocate memory for "
420 "reply_frame pool\n");
421 goto fail_reply_desc;
422 }
423
424 fusion->reply_frames_desc =
425 pci_pool_alloc(fusion->reply_frames_desc_pool, GFP_KERNEL,
426 &fusion->reply_frames_desc_phys);
427 if (!fusion->reply_frames_desc) {
428 printk(KERN_ERR "megasas; Could not allocate memory for "
429 "reply_frame pool\n");
430 pci_pool_destroy(fusion->reply_frames_desc_pool);
431 goto fail_reply_desc;
432 }
433
434 reply_desc = fusion->reply_frames_desc;
435 for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++)
436 reply_desc->Words = ULLONG_MAX;
437
438 io_frames_sz = fusion->io_frames_alloc_sz;
439
440 fusion->io_request_frames_pool =
441 pci_pool_create("io_request_frames pool", instance->pdev,
442 fusion->io_frames_alloc_sz, 16, 0);
443
444 if (!fusion->io_request_frames_pool) {
445 printk(KERN_ERR "megasas: Could not allocate memory for "
446 "io_request_frame pool\n");
447 goto fail_io_frames;
448 }
449
450 fusion->io_request_frames =
451 pci_pool_alloc(fusion->io_request_frames_pool, GFP_KERNEL,
452 &fusion->io_request_frames_phys);
453 if (!fusion->io_request_frames) {
454 printk(KERN_ERR "megasas: Could not allocate memory for "
455 "io_request_frames frames\n");
456 pci_pool_destroy(fusion->io_request_frames_pool);
457 goto fail_io_frames;
458 }
459
460 /*
461 * fusion->cmd_list is an array of struct megasas_cmd_fusion pointers.
462 * Allocate the dynamic array first and then allocate individual
463 * commands.
464 */
465 fusion->cmd_list = kzalloc(sizeof(struct megasas_cmd_fusion *)
466 * max_cmd, GFP_KERNEL);
467
468 if (!fusion->cmd_list) {
469 printk(KERN_DEBUG "megasas: out of memory. Could not alloc "
470 "memory for cmd_list_fusion\n");
471 goto fail_cmd_list;
472 }
473
474 max_cmd = instance->max_fw_cmds;
475 for (i = 0; i < max_cmd; i++) {
476 fusion->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd_fusion),
477 GFP_KERNEL);
478 if (!fusion->cmd_list[i]) {
479 printk(KERN_ERR "Could not alloc cmd list fusion\n");
480
481 for (j = 0; j < i; j++)
482 kfree(fusion->cmd_list[j]);
483
484 kfree(fusion->cmd_list);
485 fusion->cmd_list = NULL;
486 goto fail_cmd_list;
487 }
488 }
489
490 /* The first 256 bytes (SMID 0) is not used. Don't add to cmd list */
491 io_req_base = fusion->io_request_frames +
492 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
493 io_req_base_phys = fusion->io_request_frames_phys +
494 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
495
496 /*
497 * Add all the commands to command pool (fusion->cmd_pool)
498 */
499
500 /* SMID 0 is reserved. Set SMID/index from 1 */
501 for (i = 0; i < max_cmd; i++) {
502 cmd = fusion->cmd_list[i];
503 offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i;
504 memset(cmd, 0, sizeof(struct megasas_cmd_fusion));
505 cmd->index = i + 1;
506 cmd->scmd = NULL;
507 cmd->sync_cmd_idx = (u32)ULONG_MAX; /* Set to Invalid */
508 cmd->instance = instance;
509 cmd->io_request =
510 (struct MPI2_RAID_SCSI_IO_REQUEST *)
511 (io_req_base + offset);
512 memset(cmd->io_request, 0,
513 sizeof(struct MPI2_RAID_SCSI_IO_REQUEST));
514 cmd->io_request_phys_addr = io_req_base_phys + offset;
515
516 list_add_tail(&cmd->list, &fusion->cmd_pool);
517 }
518
519 /*
520 * Create a frame pool and assign one frame to each cmd
521 */
522 if (megasas_create_frame_pool_fusion(instance)) {
523 printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n");
524 megasas_free_cmds_fusion(instance);
525 goto fail_req_desc;
526 }
527
528 return 0;
529
530 fail_cmd_list:
531 pci_pool_free(fusion->io_request_frames_pool, fusion->io_request_frames,
532 fusion->io_request_frames_phys);
533 pci_pool_destroy(fusion->io_request_frames_pool);
534 fail_io_frames:
535 dma_free_coherent(&instance->pdev->dev, fusion->request_alloc_sz,
536 fusion->reply_frames_desc,
537 fusion->reply_frames_desc_phys);
538 pci_pool_free(fusion->reply_frames_desc_pool,
539 fusion->reply_frames_desc,
540 fusion->reply_frames_desc_phys);
541 pci_pool_destroy(fusion->reply_frames_desc_pool);
542
543 fail_reply_desc:
544 dma_free_coherent(&instance->pdev->dev, fusion->request_alloc_sz,
545 fusion->req_frames_desc,
546 fusion->req_frames_desc_phys);
547 fail_req_desc:
548 return -ENOMEM;
549 }
550
551 /**
552 * wait_and_poll - Issues a polling command
553 * @instance: Adapter soft state
554 * @cmd: Command packet to be issued
555 *
556 * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
557 */
558 int
559 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd)
560 {
561 int i;
562 struct megasas_header *frame_hdr = &cmd->frame->hdr;
563
564 u32 msecs = MFI_POLL_TIMEOUT_SECS * 1000;
565
566 /*
567 * Wait for cmd_status to change
568 */
569 for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) {
570 rmb();
571 msleep(20);
572 }
573
574 if (frame_hdr->cmd_status == 0xff)
575 return -ETIME;
576
577 return 0;
578 }
579
580 /**
581 * megasas_ioc_init_fusion - Initializes the FW
582 * @instance: Adapter soft state
583 *
584 * Issues the IOC Init cmd
585 */
586 int
587 megasas_ioc_init_fusion(struct megasas_instance *instance)
588 {
589 struct megasas_init_frame *init_frame;
590 struct MPI2_IOC_INIT_REQUEST *IOCInitMessage;
591 dma_addr_t ioc_init_handle;
592 struct megasas_cmd *cmd;
593 u8 ret;
594 struct fusion_context *fusion;
595 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
596 int i;
597 struct megasas_header *frame_hdr;
598
599 fusion = instance->ctrl_context;
600
601 cmd = megasas_get_cmd(instance);
602
603 if (!cmd) {
604 printk(KERN_ERR "Could not allocate cmd for INIT Frame\n");
605 ret = 1;
606 goto fail_get_cmd;
607 }
608
609 IOCInitMessage =
610 dma_alloc_coherent(&instance->pdev->dev,
611 sizeof(struct MPI2_IOC_INIT_REQUEST),
612 &ioc_init_handle, GFP_KERNEL);
613
614 if (!IOCInitMessage) {
615 printk(KERN_ERR "Could not allocate memory for "
616 "IOCInitMessage\n");
617 ret = 1;
618 goto fail_fw_init;
619 }
620
621 memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST));
622
623 IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT;
624 IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER;
625 IOCInitMessage->MsgVersion = MPI2_VERSION;
626 IOCInitMessage->HeaderVersion = MPI2_HEADER_VERSION;
627 IOCInitMessage->SystemRequestFrameSize =
628 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4;
629
630 IOCInitMessage->ReplyDescriptorPostQueueDepth = fusion->reply_q_depth;
631 IOCInitMessage->ReplyDescriptorPostQueueAddress =
632 fusion->reply_frames_desc_phys;
633 IOCInitMessage->SystemRequestFrameBaseAddress =
634 fusion->io_request_frames_phys;
635 IOCInitMessage->HostMSIxVectors = instance->msix_vectors;
636 init_frame = (struct megasas_init_frame *)cmd->frame;
637 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
638
639 frame_hdr = &cmd->frame->hdr;
640 frame_hdr->cmd_status = 0xFF;
641 frame_hdr->flags |= MFI_FRAME_DONT_POST_IN_REPLY_QUEUE;
642
643 init_frame->cmd = MFI_CMD_INIT;
644 init_frame->cmd_status = 0xFF;
645
646 init_frame->queue_info_new_phys_addr_lo = ioc_init_handle;
647 init_frame->data_xfer_len = sizeof(struct MPI2_IOC_INIT_REQUEST);
648
649 req_desc =
650 (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)fusion->req_frames_desc;
651
652 req_desc->Words = cmd->frame_phys_addr;
653 req_desc->MFAIo.RequestFlags =
654 (MEGASAS_REQ_DESCRIPT_FLAGS_MFA <<
655 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
656
657 /*
658 * disable the intr before firing the init frame
659 */
660 instance->instancet->disable_intr(instance->reg_set);
661
662 for (i = 0; i < (10 * 1000); i += 20) {
663 if (readl(&instance->reg_set->doorbell) & 1)
664 msleep(20);
665 else
666 break;
667 }
668
669 instance->instancet->fire_cmd(instance, req_desc->u.low,
670 req_desc->u.high, instance->reg_set);
671
672 wait_and_poll(instance, cmd);
673
674 frame_hdr = &cmd->frame->hdr;
675 if (frame_hdr->cmd_status != 0) {
676 ret = 1;
677 goto fail_fw_init;
678 }
679 printk(KERN_ERR "megasas:IOC Init cmd success\n");
680
681 ret = 0;
682
683 fail_fw_init:
684 megasas_return_cmd(instance, cmd);
685 if (IOCInitMessage)
686 dma_free_coherent(&instance->pdev->dev,
687 sizeof(struct MPI2_IOC_INIT_REQUEST),
688 IOCInitMessage, ioc_init_handle);
689 fail_get_cmd:
690 return ret;
691 }
692
693 /*
694 * megasas_get_ld_map_info - Returns FW's ld_map structure
695 * @instance: Adapter soft state
696 * @pend: Pend the command or not
697 * Issues an internal command (DCMD) to get the FW's controller PD
698 * list structure. This information is mainly used to find out SYSTEM
699 * supported by the FW.
700 */
701 static int
702 megasas_get_ld_map_info(struct megasas_instance *instance)
703 {
704 int ret = 0;
705 struct megasas_cmd *cmd;
706 struct megasas_dcmd_frame *dcmd;
707 struct MR_FW_RAID_MAP_ALL *ci;
708 dma_addr_t ci_h = 0;
709 u32 size_map_info;
710 struct fusion_context *fusion;
711
712 cmd = megasas_get_cmd(instance);
713
714 if (!cmd) {
715 printk(KERN_DEBUG "megasas: Failed to get cmd for map info.\n");
716 return -ENOMEM;
717 }
718
719 fusion = instance->ctrl_context;
720
721 if (!fusion) {
722 megasas_return_cmd(instance, cmd);
723 return 1;
724 }
725
726 dcmd = &cmd->frame->dcmd;
727
728 size_map_info = sizeof(struct MR_FW_RAID_MAP) +
729 (sizeof(struct MR_LD_SPAN_MAP) *(MAX_LOGICAL_DRIVES - 1));
730
731 ci = fusion->ld_map[(instance->map_id & 1)];
732 ci_h = fusion->ld_map_phys[(instance->map_id & 1)];
733
734 if (!ci) {
735 printk(KERN_DEBUG "Failed to alloc mem for ld_map_info\n");
736 megasas_return_cmd(instance, cmd);
737 return -ENOMEM;
738 }
739
740 memset(ci, 0, sizeof(*ci));
741 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
742
743 dcmd->cmd = MFI_CMD_DCMD;
744 dcmd->cmd_status = 0xFF;
745 dcmd->sge_count = 1;
746 dcmd->flags = MFI_FRAME_DIR_READ;
747 dcmd->timeout = 0;
748 dcmd->pad_0 = 0;
749 dcmd->data_xfer_len = size_map_info;
750 dcmd->opcode = MR_DCMD_LD_MAP_GET_INFO;
751 dcmd->sgl.sge32[0].phys_addr = ci_h;
752 dcmd->sgl.sge32[0].length = size_map_info;
753
754 if (!megasas_issue_polled(instance, cmd))
755 ret = 0;
756 else {
757 printk(KERN_ERR "megasas: Get LD Map Info Failed\n");
758 ret = -1;
759 }
760
761 megasas_return_cmd(instance, cmd);
762
763 return ret;
764 }
765
766 u8
767 megasas_get_map_info(struct megasas_instance *instance)
768 {
769 struct fusion_context *fusion = instance->ctrl_context;
770
771 fusion->fast_path_io = 0;
772 if (!megasas_get_ld_map_info(instance)) {
773 if (MR_ValidateMapInfo(fusion->ld_map[(instance->map_id & 1)],
774 fusion->load_balance_info)) {
775 fusion->fast_path_io = 1;
776 return 0;
777 }
778 }
779 return 1;
780 }
781
782 /*
783 * megasas_sync_map_info - Returns FW's ld_map structure
784 * @instance: Adapter soft state
785 *
786 * Issues an internal command (DCMD) to get the FW's controller PD
787 * list structure. This information is mainly used to find out SYSTEM
788 * supported by the FW.
789 */
790 int
791 megasas_sync_map_info(struct megasas_instance *instance)
792 {
793 int ret = 0, i;
794 struct megasas_cmd *cmd;
795 struct megasas_dcmd_frame *dcmd;
796 u32 size_sync_info, num_lds;
797 struct fusion_context *fusion;
798 struct MR_LD_TARGET_SYNC *ci = NULL;
799 struct MR_FW_RAID_MAP_ALL *map;
800 struct MR_LD_RAID *raid;
801 struct MR_LD_TARGET_SYNC *ld_sync;
802 dma_addr_t ci_h = 0;
803 u32 size_map_info;
804
805 cmd = megasas_get_cmd(instance);
806
807 if (!cmd) {
808 printk(KERN_DEBUG "megasas: Failed to get cmd for sync"
809 "info.\n");
810 return -ENOMEM;
811 }
812
813 fusion = instance->ctrl_context;
814
815 if (!fusion) {
816 megasas_return_cmd(instance, cmd);
817 return 1;
818 }
819
820 map = fusion->ld_map[instance->map_id & 1];
821
822 num_lds = map->raidMap.ldCount;
823
824 dcmd = &cmd->frame->dcmd;
825
826 size_sync_info = sizeof(struct MR_LD_TARGET_SYNC) *num_lds;
827
828 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
829
830 ci = (struct MR_LD_TARGET_SYNC *)
831 fusion->ld_map[(instance->map_id - 1) & 1];
832 memset(ci, 0, sizeof(struct MR_FW_RAID_MAP_ALL));
833
834 ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1];
835
836 ld_sync = (struct MR_LD_TARGET_SYNC *)ci;
837
838 for (i = 0; i < num_lds; i++, ld_sync++) {
839 raid = MR_LdRaidGet(i, map);
840 ld_sync->targetId = MR_GetLDTgtId(i, map);
841 ld_sync->seqNum = raid->seqNum;
842 }
843
844 size_map_info = sizeof(struct MR_FW_RAID_MAP) +
845 (sizeof(struct MR_LD_SPAN_MAP) *(MAX_LOGICAL_DRIVES - 1));
846
847 dcmd->cmd = MFI_CMD_DCMD;
848 dcmd->cmd_status = 0xFF;
849 dcmd->sge_count = 1;
850 dcmd->flags = MFI_FRAME_DIR_WRITE;
851 dcmd->timeout = 0;
852 dcmd->pad_0 = 0;
853 dcmd->data_xfer_len = size_map_info;
854 dcmd->mbox.b[0] = num_lds;
855 dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG;
856 dcmd->opcode = MR_DCMD_LD_MAP_GET_INFO;
857 dcmd->sgl.sge32[0].phys_addr = ci_h;
858 dcmd->sgl.sge32[0].length = size_map_info;
859
860 instance->map_update_cmd = cmd;
861
862 instance->instancet->issue_dcmd(instance, cmd);
863
864 return ret;
865 }
866
867 /**
868 * megasas_init_adapter_fusion - Initializes the FW
869 * @instance: Adapter soft state
870 *
871 * This is the main function for initializing firmware.
872 */
873 u32
874 megasas_init_adapter_fusion(struct megasas_instance *instance)
875 {
876 struct megasas_register_set __iomem *reg_set;
877 struct fusion_context *fusion;
878 u32 max_cmd;
879 int i = 0, count;
880
881 fusion = instance->ctrl_context;
882
883 reg_set = instance->reg_set;
884
885 /*
886 * Get various operational parameters from status register
887 */
888 instance->max_fw_cmds =
889 instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
890 instance->max_fw_cmds = min(instance->max_fw_cmds, (u16)1008);
891
892 /*
893 * Reduce the max supported cmds by 1. This is to ensure that the
894 * reply_q_sz (1 more than the max cmd that driver may send)
895 * does not exceed max cmds that the FW can support
896 */
897 instance->max_fw_cmds = instance->max_fw_cmds-1;
898 /* Only internal cmds (DCMD) need to have MFI frames */
899 instance->max_mfi_cmds = MEGASAS_INT_CMDS;
900
901 max_cmd = instance->max_fw_cmds;
902
903 fusion->reply_q_depth = ((max_cmd + 1 + 15)/16)*16;
904
905 fusion->request_alloc_sz =
906 sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *max_cmd;
907 fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION)
908 *(fusion->reply_q_depth);
909 fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE +
910 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE *
911 (max_cmd + 1)); /* Extra 1 for SMID 0 */
912
913 fusion->max_sge_in_main_msg =
914 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
915 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16;
916
917 fusion->max_sge_in_chain =
918 MEGASAS_MAX_SZ_CHAIN_FRAME / sizeof(union MPI2_SGE_IO_UNION);
919
920 instance->max_num_sge = fusion->max_sge_in_main_msg +
921 fusion->max_sge_in_chain - 2;
922
923 /* Used for pass thru MFI frame (DCMD) */
924 fusion->chain_offset_mfi_pthru =
925 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16;
926
927 fusion->chain_offset_io_request =
928 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
929 sizeof(union MPI2_SGE_IO_UNION))/16;
930
931 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
932 for (i = 0 ; i < count; i++)
933 fusion->last_reply_idx[i] = 0;
934
935 /*
936 * Allocate memory for descriptors
937 * Create a pool of commands
938 */
939 if (megasas_alloc_cmds(instance))
940 goto fail_alloc_mfi_cmds;
941 if (megasas_alloc_cmds_fusion(instance))
942 goto fail_alloc_cmds;
943
944 if (megasas_ioc_init_fusion(instance))
945 goto fail_ioc_init;
946
947 instance->flag_ieee = 1;
948
949 fusion->map_sz = sizeof(struct MR_FW_RAID_MAP) +
950 (sizeof(struct MR_LD_SPAN_MAP) *(MAX_LOGICAL_DRIVES - 1));
951
952 fusion->fast_path_io = 0;
953
954 for (i = 0; i < 2; i++) {
955 fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev,
956 fusion->map_sz,
957 &fusion->ld_map_phys[i],
958 GFP_KERNEL);
959 if (!fusion->ld_map[i]) {
960 printk(KERN_ERR "megasas: Could not allocate memory "
961 "for map info\n");
962 goto fail_map_info;
963 }
964 }
965
966 if (!megasas_get_map_info(instance))
967 megasas_sync_map_info(instance);
968
969 return 0;
970
971 fail_map_info:
972 if (i == 1)
973 dma_free_coherent(&instance->pdev->dev, fusion->map_sz,
974 fusion->ld_map[0], fusion->ld_map_phys[0]);
975 fail_ioc_init:
976 megasas_free_cmds_fusion(instance);
977 fail_alloc_cmds:
978 megasas_free_cmds(instance);
979 fail_alloc_mfi_cmds:
980 return 1;
981 }
982
983 /**
984 * megasas_fire_cmd_fusion - Sends command to the FW
985 * @frame_phys_addr : Physical address of cmd
986 * @frame_count : Number of frames for the command
987 * @regs : MFI register set
988 */
989 void
990 megasas_fire_cmd_fusion(struct megasas_instance *instance,
991 dma_addr_t req_desc_lo,
992 u32 req_desc_hi,
993 struct megasas_register_set __iomem *regs)
994 {
995 unsigned long flags;
996
997 spin_lock_irqsave(&instance->hba_lock, flags);
998
999 writel(req_desc_lo,
1000 &(regs)->inbound_low_queue_port);
1001 writel(req_desc_hi, &(regs)->inbound_high_queue_port);
1002 spin_unlock_irqrestore(&instance->hba_lock, flags);
1003 }
1004
1005 /**
1006 * map_cmd_status - Maps FW cmd status to OS cmd status
1007 * @cmd : Pointer to cmd
1008 * @status : status of cmd returned by FW
1009 * @ext_status : ext status of cmd returned by FW
1010 */
1011
1012 void
1013 map_cmd_status(struct megasas_cmd_fusion *cmd, u8 status, u8 ext_status)
1014 {
1015
1016 switch (status) {
1017
1018 case MFI_STAT_OK:
1019 cmd->scmd->result = DID_OK << 16;
1020 break;
1021
1022 case MFI_STAT_SCSI_IO_FAILED:
1023 case MFI_STAT_LD_INIT_IN_PROGRESS:
1024 cmd->scmd->result = (DID_ERROR << 16) | ext_status;
1025 break;
1026
1027 case MFI_STAT_SCSI_DONE_WITH_ERROR:
1028
1029 cmd->scmd->result = (DID_OK << 16) | ext_status;
1030 if (ext_status == SAM_STAT_CHECK_CONDITION) {
1031 memset(cmd->scmd->sense_buffer, 0,
1032 SCSI_SENSE_BUFFERSIZE);
1033 memcpy(cmd->scmd->sense_buffer, cmd->sense,
1034 SCSI_SENSE_BUFFERSIZE);
1035 cmd->scmd->result |= DRIVER_SENSE << 24;
1036 }
1037 break;
1038
1039 case MFI_STAT_LD_OFFLINE:
1040 case MFI_STAT_DEVICE_NOT_FOUND:
1041 cmd->scmd->result = DID_BAD_TARGET << 16;
1042 break;
1043 case MFI_STAT_CONFIG_SEQ_MISMATCH:
1044 cmd->scmd->result = DID_IMM_RETRY << 16;
1045 break;
1046 default:
1047 printk(KERN_DEBUG "megasas: FW status %#x\n", status);
1048 cmd->scmd->result = DID_ERROR << 16;
1049 break;
1050 }
1051 }
1052
1053 /**
1054 * megasas_make_sgl_fusion - Prepares 32-bit SGL
1055 * @instance: Adapter soft state
1056 * @scp: SCSI command from the mid-layer
1057 * @sgl_ptr: SGL to be filled in
1058 * @cmd: cmd we are working on
1059 *
1060 * If successful, this function returns the number of SG elements.
1061 */
1062 static int
1063 megasas_make_sgl_fusion(struct megasas_instance *instance,
1064 struct scsi_cmnd *scp,
1065 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
1066 struct megasas_cmd_fusion *cmd)
1067 {
1068 int i, sg_processed, sge_count;
1069 struct scatterlist *os_sgl;
1070 struct fusion_context *fusion;
1071
1072 fusion = instance->ctrl_context;
1073
1074 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
1075 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
1076 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr;
1077 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
1078 sgl_ptr_end->Flags = 0;
1079 }
1080
1081 sge_count = scsi_dma_map(scp);
1082
1083 BUG_ON(sge_count < 0);
1084
1085 if (sge_count > instance->max_num_sge || !sge_count)
1086 return sge_count;
1087
1088 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1089 sgl_ptr->Length = sg_dma_len(os_sgl);
1090 sgl_ptr->Address = sg_dma_address(os_sgl);
1091 sgl_ptr->Flags = 0;
1092 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
1093 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
1094 if (i == sge_count - 1)
1095 sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST;
1096 }
1097 sgl_ptr++;
1098
1099 sg_processed = i + 1;
1100
1101 if ((sg_processed == (fusion->max_sge_in_main_msg - 1)) &&
1102 (sge_count > fusion->max_sge_in_main_msg)) {
1103
1104 struct MPI25_IEEE_SGE_CHAIN64 *sg_chain;
1105 if ((instance->pdev->device ==
1106 PCI_DEVICE_ID_LSI_INVADER) ||
1107 (instance->pdev->device ==
1108 PCI_DEVICE_ID_LSI_FURY)) {
1109 if ((cmd->io_request->IoFlags &
1110 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) !=
1111 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH)
1112 cmd->io_request->ChainOffset =
1113 fusion->
1114 chain_offset_io_request;
1115 else
1116 cmd->io_request->ChainOffset = 0;
1117 } else
1118 cmd->io_request->ChainOffset =
1119 fusion->chain_offset_io_request;
1120
1121 sg_chain = sgl_ptr;
1122 /* Prepare chain element */
1123 sg_chain->NextChainOffset = 0;
1124 if ((instance->pdev->device ==
1125 PCI_DEVICE_ID_LSI_INVADER) ||
1126 (instance->pdev->device ==
1127 PCI_DEVICE_ID_LSI_FURY))
1128 sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT;
1129 else
1130 sg_chain->Flags =
1131 (IEEE_SGE_FLAGS_CHAIN_ELEMENT |
1132 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR);
1133 sg_chain->Length = (sizeof(union MPI2_SGE_IO_UNION)
1134 *(sge_count - sg_processed));
1135 sg_chain->Address = cmd->sg_frame_phys_addr;
1136
1137 sgl_ptr =
1138 (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame;
1139 }
1140 }
1141
1142 return sge_count;
1143 }
1144
1145 /**
1146 * megasas_set_pd_lba - Sets PD LBA
1147 * @cdb: CDB
1148 * @cdb_len: cdb length
1149 * @start_blk: Start block of IO
1150 *
1151 * Used to set the PD LBA in CDB for FP IOs
1152 */
1153 void
1154 megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len,
1155 struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp,
1156 struct MR_FW_RAID_MAP_ALL *local_map_ptr, u32 ref_tag)
1157 {
1158 struct MR_LD_RAID *raid;
1159 u32 ld;
1160 u64 start_blk = io_info->pdBlock;
1161 u8 *cdb = io_request->CDB.CDB32;
1162 u32 num_blocks = io_info->numBlocks;
1163 u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0;
1164
1165 /* Check if T10 PI (DIF) is enabled for this LD */
1166 ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr);
1167 raid = MR_LdRaidGet(ld, local_map_ptr);
1168 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) {
1169 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
1170 cdb[0] = MEGASAS_SCSI_VARIABLE_LENGTH_CMD;
1171 cdb[7] = MEGASAS_SCSI_ADDL_CDB_LEN;
1172
1173 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1174 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32;
1175 else
1176 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32;
1177 cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL;
1178
1179 /* LBA */
1180 cdb[12] = (u8)((start_blk >> 56) & 0xff);
1181 cdb[13] = (u8)((start_blk >> 48) & 0xff);
1182 cdb[14] = (u8)((start_blk >> 40) & 0xff);
1183 cdb[15] = (u8)((start_blk >> 32) & 0xff);
1184 cdb[16] = (u8)((start_blk >> 24) & 0xff);
1185 cdb[17] = (u8)((start_blk >> 16) & 0xff);
1186 cdb[18] = (u8)((start_blk >> 8) & 0xff);
1187 cdb[19] = (u8)(start_blk & 0xff);
1188
1189 /* Logical block reference tag */
1190 io_request->CDB.EEDP32.PrimaryReferenceTag =
1191 cpu_to_be32(ref_tag);
1192 io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0xffff;
1193 io_request->IoFlags = 32; /* Specify 32-byte cdb */
1194
1195 /* Transfer length */
1196 cdb[28] = (u8)((num_blocks >> 24) & 0xff);
1197 cdb[29] = (u8)((num_blocks >> 16) & 0xff);
1198 cdb[30] = (u8)((num_blocks >> 8) & 0xff);
1199 cdb[31] = (u8)(num_blocks & 0xff);
1200
1201 /* set SCSI IO EEDPFlags */
1202 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) {
1203 io_request->EEDPFlags =
1204 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
1205 MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
1206 MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP |
1207 MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG |
1208 MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD;
1209 } else {
1210 io_request->EEDPFlags =
1211 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
1212 MPI2_SCSIIO_EEDPFLAGS_INSERT_OP;
1213 }
1214 io_request->Control |= (0x4 << 26);
1215 io_request->EEDPBlockSize = scp->device->sector_size;
1216 } else {
1217 /* Some drives don't support 16/12 byte CDB's, convert to 10 */
1218 if (((cdb_len == 12) || (cdb_len == 16)) &&
1219 (start_blk <= 0xffffffff)) {
1220 if (cdb_len == 16) {
1221 opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10;
1222 flagvals = cdb[1];
1223 groupnum = cdb[14];
1224 control = cdb[15];
1225 } else {
1226 opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10;
1227 flagvals = cdb[1];
1228 groupnum = cdb[10];
1229 control = cdb[11];
1230 }
1231
1232 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
1233
1234 cdb[0] = opcode;
1235 cdb[1] = flagvals;
1236 cdb[6] = groupnum;
1237 cdb[9] = control;
1238
1239 /* Transfer length */
1240 cdb[8] = (u8)(num_blocks & 0xff);
1241 cdb[7] = (u8)((num_blocks >> 8) & 0xff);
1242
1243 io_request->IoFlags = 10; /* Specify 10-byte cdb */
1244 cdb_len = 10;
1245 } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) {
1246 /* Convert to 16 byte CDB for large LBA's */
1247 switch (cdb_len) {
1248 case 6:
1249 opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16;
1250 control = cdb[5];
1251 break;
1252 case 10:
1253 opcode =
1254 cdb[0] == READ_10 ? READ_16 : WRITE_16;
1255 flagvals = cdb[1];
1256 groupnum = cdb[6];
1257 control = cdb[9];
1258 break;
1259 case 12:
1260 opcode =
1261 cdb[0] == READ_12 ? READ_16 : WRITE_16;
1262 flagvals = cdb[1];
1263 groupnum = cdb[10];
1264 control = cdb[11];
1265 break;
1266 }
1267
1268 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
1269
1270 cdb[0] = opcode;
1271 cdb[1] = flagvals;
1272 cdb[14] = groupnum;
1273 cdb[15] = control;
1274
1275 /* Transfer length */
1276 cdb[13] = (u8)(num_blocks & 0xff);
1277 cdb[12] = (u8)((num_blocks >> 8) & 0xff);
1278 cdb[11] = (u8)((num_blocks >> 16) & 0xff);
1279 cdb[10] = (u8)((num_blocks >> 24) & 0xff);
1280
1281 io_request->IoFlags = 16; /* Specify 16-byte cdb */
1282 cdb_len = 16;
1283 }
1284
1285 /* Normal case, just load LBA here */
1286 switch (cdb_len) {
1287 case 6:
1288 {
1289 u8 val = cdb[1] & 0xE0;
1290 cdb[3] = (u8)(start_blk & 0xff);
1291 cdb[2] = (u8)((start_blk >> 8) & 0xff);
1292 cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f);
1293 break;
1294 }
1295 case 10:
1296 cdb[5] = (u8)(start_blk & 0xff);
1297 cdb[4] = (u8)((start_blk >> 8) & 0xff);
1298 cdb[3] = (u8)((start_blk >> 16) & 0xff);
1299 cdb[2] = (u8)((start_blk >> 24) & 0xff);
1300 break;
1301 case 12:
1302 cdb[5] = (u8)(start_blk & 0xff);
1303 cdb[4] = (u8)((start_blk >> 8) & 0xff);
1304 cdb[3] = (u8)((start_blk >> 16) & 0xff);
1305 cdb[2] = (u8)((start_blk >> 24) & 0xff);
1306 break;
1307 case 16:
1308 cdb[9] = (u8)(start_blk & 0xff);
1309 cdb[8] = (u8)((start_blk >> 8) & 0xff);
1310 cdb[7] = (u8)((start_blk >> 16) & 0xff);
1311 cdb[6] = (u8)((start_blk >> 24) & 0xff);
1312 cdb[5] = (u8)((start_blk >> 32) & 0xff);
1313 cdb[4] = (u8)((start_blk >> 40) & 0xff);
1314 cdb[3] = (u8)((start_blk >> 48) & 0xff);
1315 cdb[2] = (u8)((start_blk >> 56) & 0xff);
1316 break;
1317 }
1318 }
1319 }
1320
1321 /**
1322 * megasas_build_ldio_fusion - Prepares IOs to devices
1323 * @instance: Adapter soft state
1324 * @scp: SCSI command
1325 * @cmd: Command to be prepared
1326 *
1327 * Prepares the io_request and chain elements (sg_frame) for IO
1328 * The IO can be for PD (Fast Path) or LD
1329 */
1330 void
1331 megasas_build_ldio_fusion(struct megasas_instance *instance,
1332 struct scsi_cmnd *scp,
1333 struct megasas_cmd_fusion *cmd)
1334 {
1335 u8 fp_possible;
1336 u32 start_lba_lo, start_lba_hi, device_id, datalength = 0;
1337 struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
1338 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
1339 struct IO_REQUEST_INFO io_info;
1340 struct fusion_context *fusion;
1341 struct MR_FW_RAID_MAP_ALL *local_map_ptr;
1342
1343 device_id = MEGASAS_DEV_INDEX(instance, scp);
1344
1345 fusion = instance->ctrl_context;
1346
1347 io_request = cmd->io_request;
1348 io_request->RaidContext.VirtualDiskTgtId = device_id;
1349 io_request->RaidContext.status = 0;
1350 io_request->RaidContext.exStatus = 0;
1351
1352 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
1353
1354 start_lba_lo = 0;
1355 start_lba_hi = 0;
1356 fp_possible = 0;
1357
1358 /*
1359 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1360 */
1361 if (scp->cmd_len == 6) {
1362 datalength = (u32) scp->cmnd[4];
1363 start_lba_lo = ((u32) scp->cmnd[1] << 16) |
1364 ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
1365
1366 start_lba_lo &= 0x1FFFFF;
1367 }
1368
1369 /*
1370 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1371 */
1372 else if (scp->cmd_len == 10) {
1373 datalength = (u32) scp->cmnd[8] |
1374 ((u32) scp->cmnd[7] << 8);
1375 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1376 ((u32) scp->cmnd[3] << 16) |
1377 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1378 }
1379
1380 /*
1381 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1382 */
1383 else if (scp->cmd_len == 12) {
1384 datalength = ((u32) scp->cmnd[6] << 24) |
1385 ((u32) scp->cmnd[7] << 16) |
1386 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1387 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1388 ((u32) scp->cmnd[3] << 16) |
1389 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1390 }
1391
1392 /*
1393 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1394 */
1395 else if (scp->cmd_len == 16) {
1396 datalength = ((u32) scp->cmnd[10] << 24) |
1397 ((u32) scp->cmnd[11] << 16) |
1398 ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
1399 start_lba_lo = ((u32) scp->cmnd[6] << 24) |
1400 ((u32) scp->cmnd[7] << 16) |
1401 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1402
1403 start_lba_hi = ((u32) scp->cmnd[2] << 24) |
1404 ((u32) scp->cmnd[3] << 16) |
1405 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1406 }
1407
1408 memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO));
1409 io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo;
1410 io_info.numBlocks = datalength;
1411 io_info.ldTgtId = device_id;
1412 io_request->DataLength = scsi_bufflen(scp);
1413
1414 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1415 io_info.isRead = 1;
1416
1417 local_map_ptr = fusion->ld_map[(instance->map_id & 1)];
1418
1419 if ((MR_TargetIdToLdGet(device_id, local_map_ptr) >=
1420 MAX_LOGICAL_DRIVES) || (!fusion->fast_path_io)) {
1421 io_request->RaidContext.regLockFlags = 0;
1422 fp_possible = 0;
1423 } else {
1424 if (MR_BuildRaidContext(instance, &io_info,
1425 &io_request->RaidContext,
1426 local_map_ptr))
1427 fp_possible = io_info.fpOkForIo;
1428 }
1429
1430 /* Use smp_processor_id() for now until cmd->request->cpu is CPU
1431 id by default, not CPU group id, otherwise all MSI-X queues won't
1432 be utilized */
1433 cmd->request_desc->SCSIIO.MSIxIndex = instance->msix_vectors ?
1434 smp_processor_id() % instance->msix_vectors : 0;
1435
1436 if (fp_possible) {
1437 megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp,
1438 local_map_ptr, start_lba_lo);
1439 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
1440 cmd->request_desc->SCSIIO.RequestFlags =
1441 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY
1442 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1443 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
1444 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
1445 if (io_request->RaidContext.regLockFlags ==
1446 REGION_TYPE_UNUSED)
1447 cmd->request_desc->SCSIIO.RequestFlags =
1448 (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
1449 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1450 io_request->RaidContext.Type = MPI2_TYPE_CUDA;
1451 io_request->RaidContext.nseg = 0x1;
1452 io_request->IoFlags |=
1453 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH;
1454 io_request->RaidContext.regLockFlags |=
1455 (MR_RL_FLAGS_GRANT_DESTINATION_CUDA |
1456 MR_RL_FLAGS_SEQ_NUM_ENABLE);
1457 }
1458 if ((fusion->load_balance_info[device_id].loadBalanceFlag) &&
1459 (io_info.isRead)) {
1460 io_info.devHandle =
1461 get_updated_dev_handle(
1462 &fusion->load_balance_info[device_id],
1463 &io_info);
1464 scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG;
1465 } else
1466 scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
1467 cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle;
1468 io_request->DevHandle = io_info.devHandle;
1469 } else {
1470 io_request->RaidContext.timeoutValue =
1471 local_map_ptr->raidMap.fpPdIoTimeoutSec;
1472 cmd->request_desc->SCSIIO.RequestFlags =
1473 (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO
1474 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1475 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
1476 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
1477 if (io_request->RaidContext.regLockFlags ==
1478 REGION_TYPE_UNUSED)
1479 cmd->request_desc->SCSIIO.RequestFlags =
1480 (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
1481 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1482 io_request->RaidContext.Type = MPI2_TYPE_CUDA;
1483 io_request->RaidContext.regLockFlags |=
1484 (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 |
1485 MR_RL_FLAGS_SEQ_NUM_ENABLE);
1486 io_request->RaidContext.nseg = 0x1;
1487 }
1488 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
1489 io_request->DevHandle = device_id;
1490 } /* Not FP */
1491 }
1492
1493 /**
1494 * megasas_build_dcdb_fusion - Prepares IOs to devices
1495 * @instance: Adapter soft state
1496 * @scp: SCSI command
1497 * @cmd: Command to be prepared
1498 *
1499 * Prepares the io_request frame for non-io cmds
1500 */
1501 static void
1502 megasas_build_dcdb_fusion(struct megasas_instance *instance,
1503 struct scsi_cmnd *scmd,
1504 struct megasas_cmd_fusion *cmd)
1505 {
1506 u32 device_id;
1507 struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
1508 u16 pd_index = 0;
1509 struct MR_FW_RAID_MAP_ALL *local_map_ptr;
1510 struct fusion_context *fusion = instance->ctrl_context;
1511
1512 io_request = cmd->io_request;
1513 device_id = MEGASAS_DEV_INDEX(instance, scmd);
1514 pd_index = (scmd->device->channel * MEGASAS_MAX_DEV_PER_CHANNEL)
1515 +scmd->device->id;
1516 local_map_ptr = fusion->ld_map[(instance->map_id & 1)];
1517
1518 /* Check if this is a system PD I/O */
1519 if (scmd->device->channel < MEGASAS_MAX_PD_CHANNELS &&
1520 instance->pd_list[pd_index].driveState == MR_PD_STATE_SYSTEM) {
1521 io_request->Function = 0;
1522 if (fusion->fast_path_io)
1523 io_request->DevHandle =
1524 local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
1525 io_request->RaidContext.timeoutValue =
1526 local_map_ptr->raidMap.fpPdIoTimeoutSec;
1527 io_request->RaidContext.regLockFlags = 0;
1528 io_request->RaidContext.regLockRowLBA = 0;
1529 io_request->RaidContext.regLockLength = 0;
1530 io_request->RaidContext.RAIDFlags =
1531 MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD <<
1532 MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT;
1533 cmd->request_desc->SCSIIO.RequestFlags =
1534 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
1535 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1536 cmd->request_desc->SCSIIO.DevHandle =
1537 local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
1538 /*
1539 * If the command is for the tape device, set the
1540 * FP timeout to the os layer timeout value.
1541 */
1542 if (scmd->device->type == TYPE_TAPE) {
1543 if ((scmd->request->timeout / HZ) > 0xFFFF)
1544 io_request->RaidContext.timeoutValue =
1545 0xFFFF;
1546 else
1547 io_request->RaidContext.timeoutValue =
1548 scmd->request->timeout / HZ;
1549 }
1550 } else {
1551 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
1552 io_request->DevHandle = device_id;
1553 cmd->request_desc->SCSIIO.RequestFlags =
1554 (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
1555 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1556 }
1557 io_request->RaidContext.VirtualDiskTgtId = device_id;
1558 io_request->LUN[1] = scmd->device->lun;
1559 io_request->DataLength = scsi_bufflen(scmd);
1560 }
1561
1562 /**
1563 * megasas_build_io_fusion - Prepares IOs to devices
1564 * @instance: Adapter soft state
1565 * @scp: SCSI command
1566 * @cmd: Command to be prepared
1567 *
1568 * Invokes helper functions to prepare request frames
1569 * and sets flags appropriate for IO/Non-IO cmd
1570 */
1571 int
1572 megasas_build_io_fusion(struct megasas_instance *instance,
1573 struct scsi_cmnd *scp,
1574 struct megasas_cmd_fusion *cmd)
1575 {
1576 u32 device_id, sge_count;
1577 struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request;
1578
1579 device_id = MEGASAS_DEV_INDEX(instance, scp);
1580
1581 /* Zero out some fields so they don't get reused */
1582 io_request->LUN[1] = 0;
1583 io_request->CDB.EEDP32.PrimaryReferenceTag = 0;
1584 io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0;
1585 io_request->EEDPFlags = 0;
1586 io_request->Control = 0;
1587 io_request->EEDPBlockSize = 0;
1588 io_request->ChainOffset = 0;
1589 io_request->RaidContext.RAIDFlags = 0;
1590 io_request->RaidContext.Type = 0;
1591 io_request->RaidContext.nseg = 0;
1592
1593 memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len);
1594 /*
1595 * Just the CDB length,rest of the Flags are zero
1596 * This will be modified for FP in build_ldio_fusion
1597 */
1598 io_request->IoFlags = scp->cmd_len;
1599
1600 if (megasas_is_ldio(scp))
1601 megasas_build_ldio_fusion(instance, scp, cmd);
1602 else
1603 megasas_build_dcdb_fusion(instance, scp, cmd);
1604
1605 /*
1606 * Construct SGL
1607 */
1608
1609 sge_count =
1610 megasas_make_sgl_fusion(instance, scp,
1611 (struct MPI25_IEEE_SGE_CHAIN64 *)
1612 &io_request->SGL, cmd);
1613
1614 if (sge_count > instance->max_num_sge) {
1615 printk(KERN_ERR "megasas: Error. sge_count (0x%x) exceeds "
1616 "max (0x%x) allowed\n", sge_count,
1617 instance->max_num_sge);
1618 return 1;
1619 }
1620
1621 io_request->RaidContext.numSGE = sge_count;
1622
1623 io_request->SGLFlags = MPI2_SGE_FLAGS_64_BIT_ADDRESSING;
1624
1625 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1626 io_request->Control |= MPI2_SCSIIO_CONTROL_WRITE;
1627 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1628 io_request->Control |= MPI2_SCSIIO_CONTROL_READ;
1629
1630 io_request->SGLOffset0 =
1631 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4;
1632
1633 io_request->SenseBufferLowAddress = cmd->sense_phys_addr;
1634 io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
1635
1636 cmd->scmd = scp;
1637 scp->SCp.ptr = (char *)cmd;
1638
1639 return 0;
1640 }
1641
1642 union MEGASAS_REQUEST_DESCRIPTOR_UNION *
1643 megasas_get_request_descriptor(struct megasas_instance *instance, u16 index)
1644 {
1645 u8 *p;
1646 struct fusion_context *fusion;
1647
1648 if (index >= instance->max_fw_cmds) {
1649 printk(KERN_ERR "megasas: Invalid SMID (0x%x)request for "
1650 "descriptor\n", index);
1651 return NULL;
1652 }
1653 fusion = instance->ctrl_context;
1654 p = fusion->req_frames_desc
1655 +sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *index;
1656
1657 return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p;
1658 }
1659
1660 /**
1661 * megasas_build_and_issue_cmd_fusion -Main routine for building and
1662 * issuing non IOCTL cmd
1663 * @instance: Adapter soft state
1664 * @scmd: pointer to scsi cmd from OS
1665 */
1666 static u32
1667 megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance,
1668 struct scsi_cmnd *scmd)
1669 {
1670 struct megasas_cmd_fusion *cmd;
1671 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
1672 u32 index;
1673 struct fusion_context *fusion;
1674
1675 fusion = instance->ctrl_context;
1676
1677 cmd = megasas_get_cmd_fusion(instance);
1678 if (!cmd)
1679 return SCSI_MLQUEUE_HOST_BUSY;
1680
1681 index = cmd->index;
1682
1683 req_desc = megasas_get_request_descriptor(instance, index-1);
1684 if (!req_desc)
1685 return 1;
1686
1687 req_desc->Words = 0;
1688 cmd->request_desc = req_desc;
1689
1690 if (megasas_build_io_fusion(instance, scmd, cmd)) {
1691 megasas_return_cmd_fusion(instance, cmd);
1692 printk(KERN_ERR "megasas: Error building command.\n");
1693 cmd->request_desc = NULL;
1694 return 1;
1695 }
1696
1697 req_desc = cmd->request_desc;
1698 req_desc->SCSIIO.SMID = index;
1699
1700 if (cmd->io_request->ChainOffset != 0 &&
1701 cmd->io_request->ChainOffset != 0xF)
1702 printk(KERN_ERR "megasas: The chain offset value is not "
1703 "correct : %x\n", cmd->io_request->ChainOffset);
1704
1705 /*
1706 * Issue the command to the FW
1707 */
1708 atomic_inc(&instance->fw_outstanding);
1709
1710 instance->instancet->fire_cmd(instance,
1711 req_desc->u.low, req_desc->u.high,
1712 instance->reg_set);
1713
1714 return 0;
1715 }
1716
1717 /**
1718 * complete_cmd_fusion - Completes command
1719 * @instance: Adapter soft state
1720 * Completes all commands that is in reply descriptor queue
1721 */
1722 int
1723 complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex)
1724 {
1725 union MPI2_REPLY_DESCRIPTORS_UNION *desc;
1726 struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc;
1727 struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req;
1728 struct fusion_context *fusion;
1729 struct megasas_cmd *cmd_mfi;
1730 struct megasas_cmd_fusion *cmd_fusion;
1731 u16 smid, num_completed;
1732 u8 reply_descript_type, arm;
1733 u32 status, extStatus, device_id;
1734 union desc_value d_val;
1735 struct LD_LOAD_BALANCE_INFO *lbinfo;
1736
1737 fusion = instance->ctrl_context;
1738
1739 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
1740 return IRQ_HANDLED;
1741
1742 desc = fusion->reply_frames_desc;
1743 desc += ((MSIxIndex * fusion->reply_alloc_sz)/
1744 sizeof(union MPI2_REPLY_DESCRIPTORS_UNION)) +
1745 fusion->last_reply_idx[MSIxIndex];
1746
1747 reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
1748
1749 d_val.word = desc->Words;
1750
1751 reply_descript_type = reply_desc->ReplyFlags &
1752 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
1753
1754 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
1755 return IRQ_NONE;
1756
1757 num_completed = 0;
1758
1759 while ((d_val.u.low != UINT_MAX) && (d_val.u.high != UINT_MAX)) {
1760 smid = reply_desc->SMID;
1761
1762 cmd_fusion = fusion->cmd_list[smid - 1];
1763
1764 scsi_io_req =
1765 (struct MPI2_RAID_SCSI_IO_REQUEST *)
1766 cmd_fusion->io_request;
1767
1768 if (cmd_fusion->scmd)
1769 cmd_fusion->scmd->SCp.ptr = NULL;
1770
1771 status = scsi_io_req->RaidContext.status;
1772 extStatus = scsi_io_req->RaidContext.exStatus;
1773
1774 switch (scsi_io_req->Function) {
1775 case MPI2_FUNCTION_SCSI_IO_REQUEST: /*Fast Path IO.*/
1776 /* Update load balancing info */
1777 device_id = MEGASAS_DEV_INDEX(instance,
1778 cmd_fusion->scmd);
1779 lbinfo = &fusion->load_balance_info[device_id];
1780 if (cmd_fusion->scmd->SCp.Status &
1781 MEGASAS_LOAD_BALANCE_FLAG) {
1782 arm = lbinfo->raid1DevHandle[0] ==
1783 cmd_fusion->io_request->DevHandle ? 0 :
1784 1;
1785 atomic_dec(&lbinfo->scsi_pending_cmds[arm]);
1786 cmd_fusion->scmd->SCp.Status &=
1787 ~MEGASAS_LOAD_BALANCE_FLAG;
1788 }
1789 if (reply_descript_type ==
1790 MPI2_RPY_DESCRIPT_FLAGS_SCSI_IO_SUCCESS) {
1791 if (megasas_dbg_lvl == 5)
1792 printk(KERN_ERR "\nmegasas: FAST Path "
1793 "IO Success\n");
1794 }
1795 /* Fall thru and complete IO */
1796 case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */
1797 /* Map the FW Cmd Status */
1798 map_cmd_status(cmd_fusion, status, extStatus);
1799 scsi_dma_unmap(cmd_fusion->scmd);
1800 cmd_fusion->scmd->scsi_done(cmd_fusion->scmd);
1801 scsi_io_req->RaidContext.status = 0;
1802 scsi_io_req->RaidContext.exStatus = 0;
1803 megasas_return_cmd_fusion(instance, cmd_fusion);
1804 atomic_dec(&instance->fw_outstanding);
1805
1806 break;
1807 case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */
1808 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
1809 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
1810 cmd_fusion->flags = 0;
1811 megasas_return_cmd_fusion(instance, cmd_fusion);
1812
1813 break;
1814 }
1815
1816 fusion->last_reply_idx[MSIxIndex]++;
1817 if (fusion->last_reply_idx[MSIxIndex] >=
1818 fusion->reply_q_depth)
1819 fusion->last_reply_idx[MSIxIndex] = 0;
1820
1821 desc->Words = ULLONG_MAX;
1822 num_completed++;
1823
1824 /* Get the next reply descriptor */
1825 if (!fusion->last_reply_idx[MSIxIndex])
1826 desc = fusion->reply_frames_desc +
1827 ((MSIxIndex * fusion->reply_alloc_sz)/
1828 sizeof(union MPI2_REPLY_DESCRIPTORS_UNION));
1829 else
1830 desc++;
1831
1832 reply_desc =
1833 (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
1834
1835 d_val.word = desc->Words;
1836
1837 reply_descript_type = reply_desc->ReplyFlags &
1838 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
1839
1840 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
1841 break;
1842 }
1843
1844 if (!num_completed)
1845 return IRQ_NONE;
1846
1847 wmb();
1848 writel((MSIxIndex << 24) | fusion->last_reply_idx[MSIxIndex],
1849 &instance->reg_set->reply_post_host_index);
1850 megasas_check_and_restore_queue_depth(instance);
1851 return IRQ_HANDLED;
1852 }
1853
1854 /**
1855 * megasas_complete_cmd_dpc_fusion - Completes command
1856 * @instance: Adapter soft state
1857 *
1858 * Tasklet to complete cmds
1859 */
1860 void
1861 megasas_complete_cmd_dpc_fusion(unsigned long instance_addr)
1862 {
1863 struct megasas_instance *instance =
1864 (struct megasas_instance *)instance_addr;
1865 unsigned long flags;
1866 u32 count, MSIxIndex;
1867
1868 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
1869
1870 /* If we have already declared adapter dead, donot complete cmds */
1871 spin_lock_irqsave(&instance->hba_lock, flags);
1872 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
1873 spin_unlock_irqrestore(&instance->hba_lock, flags);
1874 return;
1875 }
1876 spin_unlock_irqrestore(&instance->hba_lock, flags);
1877
1878 for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++)
1879 complete_cmd_fusion(instance, MSIxIndex);
1880 }
1881
1882 /**
1883 * megasas_isr_fusion - isr entry point
1884 */
1885 irqreturn_t megasas_isr_fusion(int irq, void *devp)
1886 {
1887 struct megasas_irq_context *irq_context = devp;
1888 struct megasas_instance *instance = irq_context->instance;
1889 u32 mfiStatus, fw_state;
1890
1891 if (!instance->msix_vectors) {
1892 mfiStatus = instance->instancet->clear_intr(instance->reg_set);
1893 if (!mfiStatus)
1894 return IRQ_NONE;
1895 }
1896
1897 /* If we are resetting, bail */
1898 if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) {
1899 instance->instancet->clear_intr(instance->reg_set);
1900 return IRQ_HANDLED;
1901 }
1902
1903 if (!complete_cmd_fusion(instance, irq_context->MSIxIndex)) {
1904 instance->instancet->clear_intr(instance->reg_set);
1905 /* If we didn't complete any commands, check for FW fault */
1906 fw_state = instance->instancet->read_fw_status_reg(
1907 instance->reg_set) & MFI_STATE_MASK;
1908 if (fw_state == MFI_STATE_FAULT)
1909 schedule_work(&instance->work_init);
1910 }
1911
1912 return IRQ_HANDLED;
1913 }
1914
1915 /**
1916 * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru
1917 * @instance: Adapter soft state
1918 * mfi_cmd: megasas_cmd pointer
1919 *
1920 */
1921 u8
1922 build_mpt_mfi_pass_thru(struct megasas_instance *instance,
1923 struct megasas_cmd *mfi_cmd)
1924 {
1925 struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain;
1926 struct MPI2_RAID_SCSI_IO_REQUEST *io_req;
1927 struct megasas_cmd_fusion *cmd;
1928 struct fusion_context *fusion;
1929 struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr;
1930
1931 cmd = megasas_get_cmd_fusion(instance);
1932 if (!cmd)
1933 return 1;
1934
1935 /* Save the smid. To be used for returning the cmd */
1936 mfi_cmd->context.smid = cmd->index;
1937
1938 cmd->sync_cmd_idx = mfi_cmd->index;
1939
1940 /*
1941 * For cmds where the flag is set, store the flag and check
1942 * on completion. For cmds with this flag, don't call
1943 * megasas_complete_cmd
1944 */
1945
1946 if (frame_hdr->flags & MFI_FRAME_DONT_POST_IN_REPLY_QUEUE)
1947 cmd->flags = MFI_FRAME_DONT_POST_IN_REPLY_QUEUE;
1948
1949 fusion = instance->ctrl_context;
1950 io_req = cmd->io_request;
1951
1952 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
1953 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
1954 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end =
1955 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL;
1956 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
1957 sgl_ptr_end->Flags = 0;
1958 }
1959
1960 mpi25_ieee_chain =
1961 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain;
1962
1963 io_req->Function = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST;
1964 io_req->SGLOffset0 = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST,
1965 SGL) / 4;
1966 io_req->ChainOffset = fusion->chain_offset_mfi_pthru;
1967
1968 mpi25_ieee_chain->Address = mfi_cmd->frame_phys_addr;
1969
1970 mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
1971 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR;
1972
1973 mpi25_ieee_chain->Length = MEGASAS_MAX_SZ_CHAIN_FRAME;
1974
1975 return 0;
1976 }
1977
1978 /**
1979 * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd
1980 * @instance: Adapter soft state
1981 * @cmd: mfi cmd to build
1982 *
1983 */
1984 union MEGASAS_REQUEST_DESCRIPTOR_UNION *
1985 build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
1986 {
1987 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
1988 u16 index;
1989
1990 if (build_mpt_mfi_pass_thru(instance, cmd)) {
1991 printk(KERN_ERR "Couldn't build MFI pass thru cmd\n");
1992 return NULL;
1993 }
1994
1995 index = cmd->context.smid;
1996
1997 req_desc = megasas_get_request_descriptor(instance, index - 1);
1998
1999 if (!req_desc)
2000 return NULL;
2001
2002 req_desc->Words = 0;
2003 req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
2004 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2005
2006 req_desc->SCSIIO.SMID = index;
2007
2008 return req_desc;
2009 }
2010
2011 /**
2012 * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd
2013 * @instance: Adapter soft state
2014 * @cmd: mfi cmd pointer
2015 *
2016 */
2017 void
2018 megasas_issue_dcmd_fusion(struct megasas_instance *instance,
2019 struct megasas_cmd *cmd)
2020 {
2021 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2022
2023 req_desc = build_mpt_cmd(instance, cmd);
2024 if (!req_desc) {
2025 printk(KERN_ERR "Couldn't issue MFI pass thru cmd\n");
2026 return;
2027 }
2028 instance->instancet->fire_cmd(instance, req_desc->u.low,
2029 req_desc->u.high, instance->reg_set);
2030 }
2031
2032 /**
2033 * megasas_release_fusion - Reverses the FW initialization
2034 * @intance: Adapter soft state
2035 */
2036 void
2037 megasas_release_fusion(struct megasas_instance *instance)
2038 {
2039 megasas_free_cmds(instance);
2040 megasas_free_cmds_fusion(instance);
2041
2042 iounmap(instance->reg_set);
2043
2044 pci_release_selected_regions(instance->pdev, instance->bar);
2045 }
2046
2047 /**
2048 * megasas_read_fw_status_reg_fusion - returns the current FW status value
2049 * @regs: MFI register set
2050 */
2051 static u32
2052 megasas_read_fw_status_reg_fusion(struct megasas_register_set __iomem *regs)
2053 {
2054 return readl(&(regs)->outbound_scratch_pad);
2055 }
2056
2057 /**
2058 * megasas_adp_reset_fusion - For controller reset
2059 * @regs: MFI register set
2060 */
2061 static int
2062 megasas_adp_reset_fusion(struct megasas_instance *instance,
2063 struct megasas_register_set __iomem *regs)
2064 {
2065 return 0;
2066 }
2067
2068 /**
2069 * megasas_check_reset_fusion - For controller reset check
2070 * @regs: MFI register set
2071 */
2072 static int
2073 megasas_check_reset_fusion(struct megasas_instance *instance,
2074 struct megasas_register_set __iomem *regs)
2075 {
2076 return 0;
2077 }
2078
2079 /* This function waits for outstanding commands on fusion to complete */
2080 int megasas_wait_for_outstanding_fusion(struct megasas_instance *instance)
2081 {
2082 int i, outstanding, retval = 0;
2083 u32 fw_state;
2084
2085 for (i = 0; i < resetwaittime; i++) {
2086 /* Check if firmware is in fault state */
2087 fw_state = instance->instancet->read_fw_status_reg(
2088 instance->reg_set) & MFI_STATE_MASK;
2089 if (fw_state == MFI_STATE_FAULT) {
2090 printk(KERN_WARNING "megasas: Found FW in FAULT state,"
2091 " will reset adapter.\n");
2092 retval = 1;
2093 goto out;
2094 }
2095
2096 outstanding = atomic_read(&instance->fw_outstanding);
2097 if (!outstanding)
2098 goto out;
2099
2100 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2101 printk(KERN_NOTICE "megasas: [%2d]waiting for %d "
2102 "commands to complete\n", i, outstanding);
2103 megasas_complete_cmd_dpc_fusion(
2104 (unsigned long)instance);
2105 }
2106 msleep(1000);
2107 }
2108
2109 if (atomic_read(&instance->fw_outstanding)) {
2110 printk("megaraid_sas: pending commands remain after waiting, "
2111 "will reset adapter.\n");
2112 retval = 1;
2113 }
2114 out:
2115 return retval;
2116 }
2117
2118 void megasas_reset_reply_desc(struct megasas_instance *instance)
2119 {
2120 int i, count;
2121 struct fusion_context *fusion;
2122 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
2123
2124 fusion = instance->ctrl_context;
2125 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
2126 for (i = 0 ; i < count ; i++)
2127 fusion->last_reply_idx[i] = 0;
2128 reply_desc = fusion->reply_frames_desc;
2129 for (i = 0 ; i < fusion->reply_q_depth * count; i++, reply_desc++)
2130 reply_desc->Words = ULLONG_MAX;
2131 }
2132
2133 /* Core fusion reset function */
2134 int megasas_reset_fusion(struct Scsi_Host *shost)
2135 {
2136 int retval = SUCCESS, i, j, retry = 0;
2137 struct megasas_instance *instance;
2138 struct megasas_cmd_fusion *cmd_fusion;
2139 struct fusion_context *fusion;
2140 struct megasas_cmd *cmd_mfi;
2141 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2142 u32 host_diag, abs_state, status_reg, reset_adapter;
2143
2144 instance = (struct megasas_instance *)shost->hostdata;
2145 fusion = instance->ctrl_context;
2146
2147 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
2148 printk(KERN_WARNING "megaraid_sas: Hardware critical error, "
2149 "returning FAILED.\n");
2150 return FAILED;
2151 }
2152
2153 mutex_lock(&instance->reset_mutex);
2154 set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
2155 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
2156 instance->instancet->disable_intr(instance->reg_set);
2157 msleep(1000);
2158
2159 /* First try waiting for commands to complete */
2160 if (megasas_wait_for_outstanding_fusion(instance)) {
2161 printk(KERN_WARNING "megaraid_sas: resetting fusion "
2162 "adapter.\n");
2163 /* Now return commands back to the OS */
2164 for (i = 0 ; i < instance->max_fw_cmds; i++) {
2165 cmd_fusion = fusion->cmd_list[i];
2166 if (cmd_fusion->scmd) {
2167 scsi_dma_unmap(cmd_fusion->scmd);
2168 cmd_fusion->scmd->result = (DID_RESET << 16);
2169 cmd_fusion->scmd->scsi_done(cmd_fusion->scmd);
2170 megasas_return_cmd_fusion(instance, cmd_fusion);
2171 atomic_dec(&instance->fw_outstanding);
2172 }
2173 }
2174
2175 status_reg = instance->instancet->read_fw_status_reg(
2176 instance->reg_set);
2177 abs_state = status_reg & MFI_STATE_MASK;
2178 reset_adapter = status_reg & MFI_RESET_ADAPTER;
2179 if (instance->disableOnlineCtrlReset ||
2180 (abs_state == MFI_STATE_FAULT && !reset_adapter)) {
2181 /* Reset not supported, kill adapter */
2182 printk(KERN_WARNING "megaraid_sas: Reset not supported"
2183 ", killing adapter.\n");
2184 megaraid_sas_kill_hba(instance);
2185 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2186 retval = FAILED;
2187 goto out;
2188 }
2189
2190 /* Now try to reset the chip */
2191 for (i = 0; i < MEGASAS_FUSION_MAX_RESET_TRIES; i++) {
2192 writel(MPI2_WRSEQ_FLUSH_KEY_VALUE,
2193 &instance->reg_set->fusion_seq_offset);
2194 writel(MPI2_WRSEQ_1ST_KEY_VALUE,
2195 &instance->reg_set->fusion_seq_offset);
2196 writel(MPI2_WRSEQ_2ND_KEY_VALUE,
2197 &instance->reg_set->fusion_seq_offset);
2198 writel(MPI2_WRSEQ_3RD_KEY_VALUE,
2199 &instance->reg_set->fusion_seq_offset);
2200 writel(MPI2_WRSEQ_4TH_KEY_VALUE,
2201 &instance->reg_set->fusion_seq_offset);
2202 writel(MPI2_WRSEQ_5TH_KEY_VALUE,
2203 &instance->reg_set->fusion_seq_offset);
2204 writel(MPI2_WRSEQ_6TH_KEY_VALUE,
2205 &instance->reg_set->fusion_seq_offset);
2206
2207 /* Check that the diag write enable (DRWE) bit is on */
2208 host_diag = readl(&instance->reg_set->fusion_host_diag);
2209 retry = 0;
2210 while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) {
2211 msleep(100);
2212 host_diag =
2213 readl(&instance->reg_set->fusion_host_diag);
2214 if (retry++ == 100) {
2215 printk(KERN_WARNING "megaraid_sas: "
2216 "Host diag unlock failed!\n");
2217 break;
2218 }
2219 }
2220 if (!(host_diag & HOST_DIAG_WRITE_ENABLE))
2221 continue;
2222
2223 /* Send chip reset command */
2224 writel(host_diag | HOST_DIAG_RESET_ADAPTER,
2225 &instance->reg_set->fusion_host_diag);
2226 msleep(3000);
2227
2228 /* Make sure reset adapter bit is cleared */
2229 host_diag = readl(&instance->reg_set->fusion_host_diag);
2230 retry = 0;
2231 while (host_diag & HOST_DIAG_RESET_ADAPTER) {
2232 msleep(100);
2233 host_diag =
2234 readl(&instance->reg_set->fusion_host_diag);
2235 if (retry++ == 1000) {
2236 printk(KERN_WARNING "megaraid_sas: "
2237 "Diag reset adapter never "
2238 "cleared!\n");
2239 break;
2240 }
2241 }
2242 if (host_diag & HOST_DIAG_RESET_ADAPTER)
2243 continue;
2244
2245 abs_state =
2246 instance->instancet->read_fw_status_reg(
2247 instance->reg_set) & MFI_STATE_MASK;
2248 retry = 0;
2249
2250 while ((abs_state <= MFI_STATE_FW_INIT) &&
2251 (retry++ < 1000)) {
2252 msleep(100);
2253 abs_state =
2254 instance->instancet->read_fw_status_reg(
2255 instance->reg_set) & MFI_STATE_MASK;
2256 }
2257 if (abs_state <= MFI_STATE_FW_INIT) {
2258 printk(KERN_WARNING "megaraid_sas: firmware "
2259 "state < MFI_STATE_FW_INIT, state = "
2260 "0x%x\n", abs_state);
2261 continue;
2262 }
2263
2264 /* Wait for FW to become ready */
2265 if (megasas_transition_to_ready(instance, 1)) {
2266 printk(KERN_WARNING "megaraid_sas: Failed to "
2267 "transition controller to ready.\n");
2268 continue;
2269 }
2270
2271 megasas_reset_reply_desc(instance);
2272 if (megasas_ioc_init_fusion(instance)) {
2273 printk(KERN_WARNING "megaraid_sas: "
2274 "megasas_ioc_init_fusion() failed!\n");
2275 continue;
2276 }
2277
2278 clear_bit(MEGASAS_FUSION_IN_RESET,
2279 &instance->reset_flags);
2280 instance->instancet->enable_intr(instance->reg_set);
2281 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
2282
2283 /* Re-fire management commands */
2284 for (j = 0 ; j < instance->max_fw_cmds; j++) {
2285 cmd_fusion = fusion->cmd_list[j];
2286 if (cmd_fusion->sync_cmd_idx !=
2287 (u32)ULONG_MAX) {
2288 cmd_mfi =
2289 instance->
2290 cmd_list[cmd_fusion->sync_cmd_idx];
2291 if (cmd_mfi->frame->dcmd.opcode ==
2292 MR_DCMD_LD_MAP_GET_INFO) {
2293 megasas_return_cmd(instance,
2294 cmd_mfi);
2295 megasas_return_cmd_fusion(
2296 instance, cmd_fusion);
2297 } else {
2298 req_desc =
2299 megasas_get_request_descriptor(
2300 instance,
2301 cmd_mfi->context.smid
2302 -1);
2303 if (!req_desc)
2304 printk(KERN_WARNING
2305 "req_desc NULL"
2306 "\n");
2307 else {
2308 instance->instancet->
2309 fire_cmd(instance,
2310 req_desc->
2311 u.low,
2312 req_desc->
2313 u.high,
2314 instance->
2315 reg_set);
2316 }
2317 }
2318 }
2319 }
2320
2321 /* Reset load balance info */
2322 memset(fusion->load_balance_info, 0,
2323 sizeof(struct LD_LOAD_BALANCE_INFO)
2324 *MAX_LOGICAL_DRIVES);
2325
2326 if (!megasas_get_map_info(instance))
2327 megasas_sync_map_info(instance);
2328
2329 /* Adapter reset completed successfully */
2330 printk(KERN_WARNING "megaraid_sas: Reset "
2331 "successful.\n");
2332 retval = SUCCESS;
2333 goto out;
2334 }
2335 /* Reset failed, kill the adapter */
2336 printk(KERN_WARNING "megaraid_sas: Reset failed, killing "
2337 "adapter.\n");
2338 megaraid_sas_kill_hba(instance);
2339 retval = FAILED;
2340 } else {
2341 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
2342 instance->instancet->enable_intr(instance->reg_set);
2343 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
2344 }
2345 out:
2346 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
2347 mutex_unlock(&instance->reset_mutex);
2348 return retval;
2349 }
2350
2351 /* Fusion OCR work queue */
2352 void megasas_fusion_ocr_wq(struct work_struct *work)
2353 {
2354 struct megasas_instance *instance =
2355 container_of(work, struct megasas_instance, work_init);
2356
2357 megasas_reset_fusion(instance->host);
2358 }
2359
2360 struct megasas_instance_template megasas_instance_template_fusion = {
2361 .fire_cmd = megasas_fire_cmd_fusion,
2362 .enable_intr = megasas_enable_intr_fusion,
2363 .disable_intr = megasas_disable_intr_fusion,
2364 .clear_intr = megasas_clear_intr_fusion,
2365 .read_fw_status_reg = megasas_read_fw_status_reg_fusion,
2366 .adp_reset = megasas_adp_reset_fusion,
2367 .check_reset = megasas_check_reset_fusion,
2368 .service_isr = megasas_isr_fusion,
2369 .tasklet = megasas_complete_cmd_dpc_fusion,
2370 .init_adapter = megasas_init_adapter_fusion,
2371 .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion,
2372 .issue_dcmd = megasas_issue_dcmd_fusion,
2373 };
Linux kernel - Deliverables
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