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mm/zsmalloc: allocate exactly size of struct zs_pool
[linux/fpc-iii.git] / drivers / scsi / megaraid / megaraid_sas_fusion.c
blob71557f64bb5e6e4936cfe2dc642097dc8bdc6ba0
1 /*
2 * Linux MegaRAID driver for SAS based RAID controllers
3 *
4 * Copyright (c) 2009-2013 LSI Corporation
5 * Copyright (c) 2013-2014 Avago Technologies
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
19 *
20 * FILE: megaraid_sas_fusion.c
21 *
22 * Authors: Avago Technologies
23 * Sumant Patro
24 * Adam Radford
25 * Kashyap Desai <kashyap.desai@avagotech.com>
26 * Sumit Saxena <sumit.saxena@avagotech.com>
27 *
28 * Send feedback to: megaraidlinux.pdl@avagotech.com
29 *
30 * Mail to: Avago Technologies, 350 West Trimble Road, Building 90,
31 * San Jose, California 95131
32 */
33
34 #include <linux/kernel.h>
35 #include <linux/types.h>
36 #include <linux/pci.h>
37 #include <linux/list.h>
38 #include <linux/moduleparam.h>
39 #include <linux/module.h>
40 #include <linux/spinlock.h>
41 #include <linux/interrupt.h>
42 #include <linux/delay.h>
43 #include <linux/uio.h>
44 #include <linux/uaccess.h>
45 #include <linux/fs.h>
46 #include <linux/compat.h>
47 #include <linux/blkdev.h>
48 #include <linux/mutex.h>
49 #include <linux/poll.h>
50
51 #include <scsi/scsi.h>
52 #include <scsi/scsi_cmnd.h>
53 #include <scsi/scsi_device.h>
54 #include <scsi/scsi_host.h>
55 #include <scsi/scsi_dbg.h>
56
57 #include "megaraid_sas_fusion.h"
58 #include "megaraid_sas.h"
59
60 extern void megasas_free_cmds(struct megasas_instance *instance);
61 extern struct megasas_cmd *megasas_get_cmd(struct megasas_instance
62 *instance);
63 extern void
64 megasas_complete_cmd(struct megasas_instance *instance,
65 struct megasas_cmd *cmd, u8 alt_status);
66 int megasas_is_ldio(struct scsi_cmnd *cmd);
67 int
68 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
69 int seconds);
70
71 void
72 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd);
73 int megasas_alloc_cmds(struct megasas_instance *instance);
74 int
75 megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs);
76 int
77 megasas_issue_polled(struct megasas_instance *instance,
78 struct megasas_cmd *cmd);
79 void
80 megasas_check_and_restore_queue_depth(struct megasas_instance *instance);
81
82 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
83 void megaraid_sas_kill_hba(struct megasas_instance *instance);
84
85 extern u32 megasas_dbg_lvl;
86 void megasas_sriov_heartbeat_handler(unsigned long instance_addr);
87 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
88 int initial);
89 void megasas_start_timer(struct megasas_instance *instance,
90 struct timer_list *timer,
91 void *fn, unsigned long interval);
92 extern struct megasas_mgmt_info megasas_mgmt_info;
93 extern int resetwaittime;
94
95
96
97 /**
98 * megasas_enable_intr_fusion - Enables interrupts
99 * @regs: MFI register set
100 */
101 void
102 megasas_enable_intr_fusion(struct megasas_instance *instance)
103 {
104 struct megasas_register_set __iomem *regs;
105 regs = instance->reg_set;
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 instance->mask_interrupts = 0;
115 }
116
117 /**
118 * megasas_disable_intr_fusion - Disables interrupt
119 * @regs: MFI register set
120 */
121 void
122 megasas_disable_intr_fusion(struct megasas_instance *instance)
123 {
124 u32 mask = 0xFFFFFFFF;
125 u32 status;
126 struct megasas_register_set __iomem *regs;
127 regs = instance->reg_set;
128 instance->mask_interrupts = 1;
129
130 writel(mask, &regs->outbound_intr_mask);
131 /* Dummy readl to force pci flush */
132 status = readl(&regs->outbound_intr_mask);
133 }
134
135 int
136 megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs)
137 {
138 u32 status;
139 /*
140 * Check if it is our interrupt
141 */
142 status = readl(&regs->outbound_intr_status);
143
144 if (status & 1) {
145 writel(status, &regs->outbound_intr_status);
146 readl(&regs->outbound_intr_status);
147 return 1;
148 }
149 if (!(status & MFI_FUSION_ENABLE_INTERRUPT_MASK))
150 return 0;
151
152 return 1;
153 }
154
155 /**
156 * megasas_get_cmd_fusion - Get a command from the free pool
157 * @instance: Adapter soft state
158 *
159 * Returns a free command from the pool
160 */
161 struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance
162 *instance)
163 {
164 unsigned long flags;
165 struct fusion_context *fusion =
166 (struct fusion_context *)instance->ctrl_context;
167 struct megasas_cmd_fusion *cmd = NULL;
168
169 spin_lock_irqsave(&fusion->mpt_pool_lock, flags);
170
171 if (!list_empty(&fusion->cmd_pool)) {
172 cmd = list_entry((&fusion->cmd_pool)->next,
173 struct megasas_cmd_fusion, list);
174 list_del_init(&cmd->list);
175 } else {
176 printk(KERN_ERR "megasas: Command pool (fusion) empty!\n");
177 }
178
179 spin_unlock_irqrestore(&fusion->mpt_pool_lock, flags);
180 return cmd;
181 }
182
183 /**
184 * megasas_return_cmd_fusion - Return a cmd to free command pool
185 * @instance: Adapter soft state
186 * @cmd: Command packet to be returned to free command pool
187 */
188 inline void megasas_return_cmd_fusion(struct megasas_instance *instance,
189 struct megasas_cmd_fusion *cmd)
190 {
191 unsigned long flags;
192 struct fusion_context *fusion =
193 (struct fusion_context *)instance->ctrl_context;
194
195 spin_lock_irqsave(&fusion->mpt_pool_lock, flags);
196
197 cmd->scmd = NULL;
198 cmd->sync_cmd_idx = (u32)ULONG_MAX;
199 list_add(&cmd->list, (&fusion->cmd_pool)->next);
200
201 spin_unlock_irqrestore(&fusion->mpt_pool_lock, flags);
202 }
203
204 /**
205 * megasas_return_mfi_mpt_pthr - Return a mfi and mpt to free command pool
206 * @instance: Adapter soft state
207 * @cmd_mfi: MFI Command packet to be returned to free command pool
208 * @cmd_mpt: MPT Command packet to be returned to free command pool
209 */
210 inline void megasas_return_mfi_mpt_pthr(struct megasas_instance *instance,
211 struct megasas_cmd *cmd_mfi,
212 struct megasas_cmd_fusion *cmd_fusion)
213 {
214 unsigned long flags;
215
216 /*
217 * TO DO: optimize this code and use only one lock instead of two
218 * locks being used currently- mpt_pool_lock is acquired
219 * inside mfi_pool_lock
220 */
221 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
222 megasas_return_cmd_fusion(instance, cmd_fusion);
223 if (atomic_read(&cmd_mfi->mfi_mpt_pthr) != MFI_MPT_ATTACHED)
224 dev_err(&instance->pdev->dev, "Possible bug from %s %d\n",
225 __func__, __LINE__);
226 atomic_set(&cmd_mfi->mfi_mpt_pthr, MFI_MPT_DETACHED);
227 __megasas_return_cmd(instance, cmd_mfi);
228 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
229 }
230
231 /**
232 * megasas_teardown_frame_pool_fusion - Destroy the cmd frame DMA pool
233 * @instance: Adapter soft state
234 */
235 static void megasas_teardown_frame_pool_fusion(
236 struct megasas_instance *instance)
237 {
238 int i;
239 struct fusion_context *fusion = instance->ctrl_context;
240
241 u16 max_cmd = instance->max_fw_cmds;
242
243 struct megasas_cmd_fusion *cmd;
244
245 if (!fusion->sg_dma_pool || !fusion->sense_dma_pool) {
246 printk(KERN_ERR "megasas: dma pool is null. SG Pool %p, "
247 "sense pool : %p\n", fusion->sg_dma_pool,
248 fusion->sense_dma_pool);
249 return;
250 }
251
252 /*
253 * Return all frames to pool
254 */
255 for (i = 0; i < max_cmd; i++) {
256
257 cmd = fusion->cmd_list[i];
258
259 if (cmd->sg_frame)
260 pci_pool_free(fusion->sg_dma_pool, cmd->sg_frame,
261 cmd->sg_frame_phys_addr);
262
263 if (cmd->sense)
264 pci_pool_free(fusion->sense_dma_pool, cmd->sense,
265 cmd->sense_phys_addr);
266 }
267
268 /*
269 * Now destroy the pool itself
270 */
271 pci_pool_destroy(fusion->sg_dma_pool);
272 pci_pool_destroy(fusion->sense_dma_pool);
273
274 fusion->sg_dma_pool = NULL;
275 fusion->sense_dma_pool = NULL;
276 }
277
278 /**
279 * megasas_free_cmds_fusion - Free all the cmds in the free cmd pool
280 * @instance: Adapter soft state
281 */
282 void
283 megasas_free_cmds_fusion(struct megasas_instance *instance)
284 {
285 int i;
286 struct fusion_context *fusion = instance->ctrl_context;
287
288 u32 max_cmds, req_sz, reply_sz, io_frames_sz;
289
290
291 req_sz = fusion->request_alloc_sz;
292 reply_sz = fusion->reply_alloc_sz;
293 io_frames_sz = fusion->io_frames_alloc_sz;
294
295 max_cmds = instance->max_fw_cmds;
296
297 /* Free descriptors and request Frames memory */
298 if (fusion->req_frames_desc)
299 dma_free_coherent(&instance->pdev->dev, req_sz,
300 fusion->req_frames_desc,
301 fusion->req_frames_desc_phys);
302
303 if (fusion->reply_frames_desc) {
304 pci_pool_free(fusion->reply_frames_desc_pool,
305 fusion->reply_frames_desc,
306 fusion->reply_frames_desc_phys);
307 pci_pool_destroy(fusion->reply_frames_desc_pool);
308 }
309
310 if (fusion->io_request_frames) {
311 pci_pool_free(fusion->io_request_frames_pool,
312 fusion->io_request_frames,
313 fusion->io_request_frames_phys);
314 pci_pool_destroy(fusion->io_request_frames_pool);
315 }
316
317 /* Free the Fusion frame pool */
318 megasas_teardown_frame_pool_fusion(instance);
319
320 /* Free all the commands in the cmd_list */
321 for (i = 0; i < max_cmds; i++)
322 kfree(fusion->cmd_list[i]);
323
324 /* Free the cmd_list buffer itself */
325 kfree(fusion->cmd_list);
326 fusion->cmd_list = NULL;
327
328 INIT_LIST_HEAD(&fusion->cmd_pool);
329 }
330
331 /**
332 * megasas_create_frame_pool_fusion - Creates DMA pool for cmd frames
333 * @instance: Adapter soft state
334 *
335 */
336 static int megasas_create_frame_pool_fusion(struct megasas_instance *instance)
337 {
338 int i;
339 u32 max_cmd;
340 struct fusion_context *fusion;
341 struct megasas_cmd_fusion *cmd;
342 u32 total_sz_chain_frame;
343
344 fusion = instance->ctrl_context;
345 max_cmd = instance->max_fw_cmds;
346
347 total_sz_chain_frame = MEGASAS_MAX_SZ_CHAIN_FRAME;
348
349 /*
350 * Use DMA pool facility provided by PCI layer
351 */
352
353 fusion->sg_dma_pool = pci_pool_create("megasas sg pool fusion",
354 instance->pdev,
355 total_sz_chain_frame, 4,
356 0);
357 if (!fusion->sg_dma_pool) {
358 printk(KERN_DEBUG "megasas: failed to setup request pool "
359 "fusion\n");
360 return -ENOMEM;
361 }
362 fusion->sense_dma_pool = pci_pool_create("megasas sense pool fusion",
363 instance->pdev,
364 SCSI_SENSE_BUFFERSIZE, 64, 0);
365
366 if (!fusion->sense_dma_pool) {
367 printk(KERN_DEBUG "megasas: failed to setup sense pool "
368 "fusion\n");
369 pci_pool_destroy(fusion->sg_dma_pool);
370 fusion->sg_dma_pool = NULL;
371 return -ENOMEM;
372 }
373
374 /*
375 * Allocate and attach a frame to each of the commands in cmd_list
376 */
377 for (i = 0; i < max_cmd; i++) {
378
379 cmd = fusion->cmd_list[i];
380
381 cmd->sg_frame = pci_pool_alloc(fusion->sg_dma_pool,
382 GFP_KERNEL,
383 &cmd->sg_frame_phys_addr);
384
385 cmd->sense = pci_pool_alloc(fusion->sense_dma_pool,
386 GFP_KERNEL, &cmd->sense_phys_addr);
387 /*
388 * megasas_teardown_frame_pool_fusion() takes care of freeing
389 * whatever has been allocated
390 */
391 if (!cmd->sg_frame || !cmd->sense) {
392 printk(KERN_DEBUG "megasas: pci_pool_alloc failed\n");
393 megasas_teardown_frame_pool_fusion(instance);
394 return -ENOMEM;
395 }
396 }
397 return 0;
398 }
399
400 /**
401 * megasas_alloc_cmds_fusion - Allocates the command packets
402 * @instance: Adapter soft state
403 *
404 *
405 * Each frame has a 32-bit field called context. This context is used to get
406 * back the megasas_cmd_fusion from the frame when a frame gets completed
407 * In this driver, the 32 bit values are the indices into an array cmd_list.
408 * This array is used only to look up the megasas_cmd_fusion given the context.
409 * The free commands themselves are maintained in a linked list called cmd_pool.
410 *
411 * cmds are formed in the io_request and sg_frame members of the
412 * megasas_cmd_fusion. The context field is used to get a request descriptor
413 * and is used as SMID of the cmd.
414 * SMID value range is from 1 to max_fw_cmds.
415 */
416 int
417 megasas_alloc_cmds_fusion(struct megasas_instance *instance)
418 {
419 int i, j, count;
420 u32 max_cmd, io_frames_sz;
421 struct fusion_context *fusion;
422 struct megasas_cmd_fusion *cmd;
423 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
424 u32 offset;
425 dma_addr_t io_req_base_phys;
426 u8 *io_req_base;
427
428 fusion = instance->ctrl_context;
429
430 max_cmd = instance->max_fw_cmds;
431
432 fusion->req_frames_desc =
433 dma_alloc_coherent(&instance->pdev->dev,
434 fusion->request_alloc_sz,
435 &fusion->req_frames_desc_phys, GFP_KERNEL);
436
437 if (!fusion->req_frames_desc) {
438 printk(KERN_ERR "megasas; Could not allocate memory for "
439 "request_frames\n");
440 goto fail_req_desc;
441 }
442
443 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
444 fusion->reply_frames_desc_pool =
445 pci_pool_create("reply_frames pool", instance->pdev,
446 fusion->reply_alloc_sz * count, 16, 0);
447
448 if (!fusion->reply_frames_desc_pool) {
449 printk(KERN_ERR "megasas; Could not allocate memory for "
450 "reply_frame pool\n");
451 goto fail_reply_desc;
452 }
453
454 fusion->reply_frames_desc =
455 pci_pool_alloc(fusion->reply_frames_desc_pool, GFP_KERNEL,
456 &fusion->reply_frames_desc_phys);
457 if (!fusion->reply_frames_desc) {
458 printk(KERN_ERR "megasas; Could not allocate memory for "
459 "reply_frame pool\n");
460 pci_pool_destroy(fusion->reply_frames_desc_pool);
461 goto fail_reply_desc;
462 }
463
464 reply_desc = fusion->reply_frames_desc;
465 for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++)
466 reply_desc->Words = ULLONG_MAX;
467
468 io_frames_sz = fusion->io_frames_alloc_sz;
469
470 fusion->io_request_frames_pool =
471 pci_pool_create("io_request_frames pool", instance->pdev,
472 fusion->io_frames_alloc_sz, 16, 0);
473
474 if (!fusion->io_request_frames_pool) {
475 printk(KERN_ERR "megasas: Could not allocate memory for "
476 "io_request_frame pool\n");
477 goto fail_io_frames;
478 }
479
480 fusion->io_request_frames =
481 pci_pool_alloc(fusion->io_request_frames_pool, GFP_KERNEL,
482 &fusion->io_request_frames_phys);
483 if (!fusion->io_request_frames) {
484 printk(KERN_ERR "megasas: Could not allocate memory for "
485 "io_request_frames frames\n");
486 pci_pool_destroy(fusion->io_request_frames_pool);
487 goto fail_io_frames;
488 }
489
490 /*
491 * fusion->cmd_list is an array of struct megasas_cmd_fusion pointers.
492 * Allocate the dynamic array first and then allocate individual
493 * commands.
494 */
495 fusion->cmd_list = kzalloc(sizeof(struct megasas_cmd_fusion *)
496 * max_cmd, GFP_KERNEL);
497
498 if (!fusion->cmd_list) {
499 printk(KERN_DEBUG "megasas: out of memory. Could not alloc "
500 "memory for cmd_list_fusion\n");
501 goto fail_cmd_list;
502 }
503
504 max_cmd = instance->max_fw_cmds;
505 for (i = 0; i < max_cmd; i++) {
506 fusion->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd_fusion),
507 GFP_KERNEL);
508 if (!fusion->cmd_list[i]) {
509 printk(KERN_ERR "Could not alloc cmd list fusion\n");
510
511 for (j = 0; j < i; j++)
512 kfree(fusion->cmd_list[j]);
513
514 kfree(fusion->cmd_list);
515 fusion->cmd_list = NULL;
516 goto fail_cmd_list;
517 }
518 }
519
520 /* The first 256 bytes (SMID 0) is not used. Don't add to cmd list */
521 io_req_base = fusion->io_request_frames +
522 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
523 io_req_base_phys = fusion->io_request_frames_phys +
524 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
525
526 /*
527 * Add all the commands to command pool (fusion->cmd_pool)
528 */
529
530 /* SMID 0 is reserved. Set SMID/index from 1 */
531 for (i = 0; i < max_cmd; i++) {
532 cmd = fusion->cmd_list[i];
533 offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i;
534 memset(cmd, 0, sizeof(struct megasas_cmd_fusion));
535 cmd->index = i + 1;
536 cmd->scmd = NULL;
537 cmd->sync_cmd_idx = (u32)ULONG_MAX; /* Set to Invalid */
538 cmd->instance = instance;
539 cmd->io_request =
540 (struct MPI2_RAID_SCSI_IO_REQUEST *)
541 (io_req_base + offset);
542 memset(cmd->io_request, 0,
543 sizeof(struct MPI2_RAID_SCSI_IO_REQUEST));
544 cmd->io_request_phys_addr = io_req_base_phys + offset;
545
546 list_add_tail(&cmd->list, &fusion->cmd_pool);
547 }
548
549 /*
550 * Create a frame pool and assign one frame to each cmd
551 */
552 if (megasas_create_frame_pool_fusion(instance)) {
553 printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n");
554 megasas_free_cmds_fusion(instance);
555 goto fail_req_desc;
556 }
557
558 return 0;
559
560 fail_cmd_list:
561 pci_pool_free(fusion->io_request_frames_pool, fusion->io_request_frames,
562 fusion->io_request_frames_phys);
563 pci_pool_destroy(fusion->io_request_frames_pool);
564 fail_io_frames:
565 dma_free_coherent(&instance->pdev->dev, fusion->request_alloc_sz,
566 fusion->reply_frames_desc,
567 fusion->reply_frames_desc_phys);
568 pci_pool_free(fusion->reply_frames_desc_pool,
569 fusion->reply_frames_desc,
570 fusion->reply_frames_desc_phys);
571 pci_pool_destroy(fusion->reply_frames_desc_pool);
572
573 fail_reply_desc:
574 dma_free_coherent(&instance->pdev->dev, fusion->request_alloc_sz,
575 fusion->req_frames_desc,
576 fusion->req_frames_desc_phys);
577 fail_req_desc:
578 return -ENOMEM;
579 }
580
581 /**
582 * wait_and_poll - Issues a polling command
583 * @instance: Adapter soft state
584 * @cmd: Command packet to be issued
585 *
586 * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
587 */
588 int
589 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
590 int seconds)
591 {
592 int i;
593 struct megasas_header *frame_hdr = &cmd->frame->hdr;
594 struct fusion_context *fusion;
595
596 u32 msecs = seconds * 1000;
597
598 fusion = instance->ctrl_context;
599 /*
600 * Wait for cmd_status to change
601 */
602 for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) {
603 rmb();
604 msleep(20);
605 }
606
607 if (frame_hdr->cmd_status == 0xff) {
608 if (fusion)
609 megasas_return_mfi_mpt_pthr(instance, cmd,
610 cmd->mpt_pthr_cmd_blocked);
611 return -ETIME;
612 }
613
614 return 0;
615 }
616
617 /**
618 * megasas_ioc_init_fusion - Initializes the FW
619 * @instance: Adapter soft state
620 *
621 * Issues the IOC Init cmd
622 */
623 int
624 megasas_ioc_init_fusion(struct megasas_instance *instance)
625 {
626 struct megasas_init_frame *init_frame;
627 struct MPI2_IOC_INIT_REQUEST *IOCInitMessage;
628 dma_addr_t ioc_init_handle;
629 struct megasas_cmd *cmd;
630 u8 ret;
631 struct fusion_context *fusion;
632 union MEGASAS_REQUEST_DESCRIPTOR_UNION req_desc;
633 int i;
634 struct megasas_header *frame_hdr;
635
636 fusion = instance->ctrl_context;
637
638 cmd = megasas_get_cmd(instance);
639
640 if (!cmd) {
641 printk(KERN_ERR "Could not allocate cmd for INIT Frame\n");
642 ret = 1;
643 goto fail_get_cmd;
644 }
645
646 IOCInitMessage =
647 dma_alloc_coherent(&instance->pdev->dev,
648 sizeof(struct MPI2_IOC_INIT_REQUEST),
649 &ioc_init_handle, GFP_KERNEL);
650
651 if (!IOCInitMessage) {
652 printk(KERN_ERR "Could not allocate memory for "
653 "IOCInitMessage\n");
654 ret = 1;
655 goto fail_fw_init;
656 }
657
658 memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST));
659
660 IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT;
661 IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER;
662 IOCInitMessage->MsgVersion = cpu_to_le16(MPI2_VERSION);
663 IOCInitMessage->HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION);
664 IOCInitMessage->SystemRequestFrameSize = cpu_to_le16(MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4);
665
666 IOCInitMessage->ReplyDescriptorPostQueueDepth = cpu_to_le16(fusion->reply_q_depth);
667 IOCInitMessage->ReplyDescriptorPostQueueAddress = cpu_to_le64(fusion->reply_frames_desc_phys);
668 IOCInitMessage->SystemRequestFrameBaseAddress = cpu_to_le64(fusion->io_request_frames_phys);
669 IOCInitMessage->HostMSIxVectors = instance->msix_vectors;
670 init_frame = (struct megasas_init_frame *)cmd->frame;
671 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
672
673 frame_hdr = &cmd->frame->hdr;
674 frame_hdr->cmd_status = 0xFF;
675 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
676
677 init_frame->cmd = MFI_CMD_INIT;
678 init_frame->cmd_status = 0xFF;
679
680 /* driver support Extended MSIX */
681 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
682 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
683 init_frame->driver_operations.
684 mfi_capabilities.support_additional_msix = 1;
685 /* driver supports HA / Remote LUN over Fast Path interface */
686 init_frame->driver_operations.mfi_capabilities.support_fp_remote_lun
687 = 1;
688 init_frame->driver_operations.mfi_capabilities.support_max_255lds
689 = 1;
690 init_frame->driver_operations.mfi_capabilities.support_ndrive_r1_lb
691 = 1;
692 /* Convert capability to LE32 */
693 cpu_to_le32s((u32 *)&init_frame->driver_operations.mfi_capabilities);
694
695 init_frame->queue_info_new_phys_addr_hi =
696 cpu_to_le32(upper_32_bits(ioc_init_handle));
697 init_frame->queue_info_new_phys_addr_lo =
698 cpu_to_le32(lower_32_bits(ioc_init_handle));
699 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct MPI2_IOC_INIT_REQUEST));
700
701 req_desc.Words = 0;
702 req_desc.MFAIo.RequestFlags =
703 (MEGASAS_REQ_DESCRIPT_FLAGS_MFA <<
704 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
705 cpu_to_le32s((u32 *)&req_desc.MFAIo);
706 req_desc.Words |= cpu_to_le64(cmd->frame_phys_addr);
707
708 /*
709 * disable the intr before firing the init frame
710 */
711 instance->instancet->disable_intr(instance);
712
713 for (i = 0; i < (10 * 1000); i += 20) {
714 if (readl(&instance->reg_set->doorbell) & 1)
715 msleep(20);
716 else
717 break;
718 }
719
720 instance->instancet->fire_cmd(instance, req_desc.u.low,
721 req_desc.u.high, instance->reg_set);
722
723 wait_and_poll(instance, cmd, MFI_POLL_TIMEOUT_SECS);
724
725 frame_hdr = &cmd->frame->hdr;
726 if (frame_hdr->cmd_status != 0) {
727 ret = 1;
728 goto fail_fw_init;
729 }
730 printk(KERN_ERR "megasas:IOC Init cmd success\n");
731
732 ret = 0;
733
734 fail_fw_init:
735 megasas_return_cmd(instance, cmd);
736 if (IOCInitMessage)
737 dma_free_coherent(&instance->pdev->dev,
738 sizeof(struct MPI2_IOC_INIT_REQUEST),
739 IOCInitMessage, ioc_init_handle);
740 fail_get_cmd:
741 return ret;
742 }
743
744 /*
745 * megasas_get_ld_map_info - Returns FW's ld_map structure
746 * @instance: Adapter soft state
747 * @pend: Pend the command or not
748 * Issues an internal command (DCMD) to get the FW's controller PD
749 * list structure. This information is mainly used to find out SYSTEM
750 * supported by the FW.
751 * dcmd.mbox value setting for MR_DCMD_LD_MAP_GET_INFO
752 * dcmd.mbox.b[0] - number of LDs being sync'd
753 * dcmd.mbox.b[1] - 0 - complete command immediately.
754 * - 1 - pend till config change
755 * dcmd.mbox.b[2] - 0 - supports max 64 lds and uses legacy MR_FW_RAID_MAP
756 * - 1 - supports max MAX_LOGICAL_DRIVES_EXT lds and
757 * uses extended struct MR_FW_RAID_MAP_EXT
758 */
759 static int
760 megasas_get_ld_map_info(struct megasas_instance *instance)
761 {
762 int ret = 0;
763 struct megasas_cmd *cmd;
764 struct megasas_dcmd_frame *dcmd;
765 void *ci;
766 dma_addr_t ci_h = 0;
767 u32 size_map_info;
768 struct fusion_context *fusion;
769
770 cmd = megasas_get_cmd(instance);
771
772 if (!cmd) {
773 printk(KERN_DEBUG "megasas: Failed to get cmd for map info.\n");
774 return -ENOMEM;
775 }
776
777 fusion = instance->ctrl_context;
778
779 if (!fusion) {
780 megasas_return_cmd(instance, cmd);
781 return -ENXIO;
782 }
783
784 dcmd = &cmd->frame->dcmd;
785
786 size_map_info = fusion->current_map_sz;
787
788 ci = (void *) fusion->ld_map[(instance->map_id & 1)];
789 ci_h = fusion->ld_map_phys[(instance->map_id & 1)];
790
791 if (!ci) {
792 printk(KERN_DEBUG "Failed to alloc mem for ld_map_info\n");
793 megasas_return_cmd(instance, cmd);
794 return -ENOMEM;
795 }
796
797 memset(ci, 0, fusion->max_map_sz);
798 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
799 #if VD_EXT_DEBUG
800 dev_dbg(&instance->pdev->dev,
801 "%s sending MR_DCMD_LD_MAP_GET_INFO with size %d\n",
802 __func__, cpu_to_le32(size_map_info));
803 #endif
804 dcmd->cmd = MFI_CMD_DCMD;
805 dcmd->cmd_status = 0xFF;
806 dcmd->sge_count = 1;
807 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
808 dcmd->timeout = 0;
809 dcmd->pad_0 = 0;
810 dcmd->data_xfer_len = cpu_to_le32(size_map_info);
811 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
812 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
813 dcmd->sgl.sge32[0].length = cpu_to_le32(size_map_info);
814
815 if (instance->ctrl_context && !instance->mask_interrupts)
816 ret = megasas_issue_blocked_cmd(instance, cmd,
817 MEGASAS_BLOCKED_CMD_TIMEOUT);
818 else
819 ret = megasas_issue_polled(instance, cmd);
820
821 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
822 megasas_return_mfi_mpt_pthr(instance, cmd,
823 cmd->mpt_pthr_cmd_blocked);
824 else
825 megasas_return_cmd(instance, cmd);
826
827 return ret;
828 }
829
830 u8
831 megasas_get_map_info(struct megasas_instance *instance)
832 {
833 struct fusion_context *fusion = instance->ctrl_context;
834
835 fusion->fast_path_io = 0;
836 if (!megasas_get_ld_map_info(instance)) {
837 if (MR_ValidateMapInfo(instance)) {
838 fusion->fast_path_io = 1;
839 return 0;
840 }
841 }
842 return 1;
843 }
844
845 /*
846 * megasas_sync_map_info - Returns FW's ld_map structure
847 * @instance: Adapter soft state
848 *
849 * Issues an internal command (DCMD) to get the FW's controller PD
850 * list structure. This information is mainly used to find out SYSTEM
851 * supported by the FW.
852 */
853 int
854 megasas_sync_map_info(struct megasas_instance *instance)
855 {
856 int ret = 0, i;
857 struct megasas_cmd *cmd;
858 struct megasas_dcmd_frame *dcmd;
859 u32 size_sync_info, num_lds;
860 struct fusion_context *fusion;
861 struct MR_LD_TARGET_SYNC *ci = NULL;
862 struct MR_DRV_RAID_MAP_ALL *map;
863 struct MR_LD_RAID *raid;
864 struct MR_LD_TARGET_SYNC *ld_sync;
865 dma_addr_t ci_h = 0;
866 u32 size_map_info;
867
868 cmd = megasas_get_cmd(instance);
869
870 if (!cmd) {
871 printk(KERN_DEBUG "megasas: Failed to get cmd for sync"
872 "info.\n");
873 return -ENOMEM;
874 }
875
876 fusion = instance->ctrl_context;
877
878 if (!fusion) {
879 megasas_return_cmd(instance, cmd);
880 return 1;
881 }
882
883 map = fusion->ld_drv_map[instance->map_id & 1];
884
885 num_lds = le16_to_cpu(map->raidMap.ldCount);
886
887 dcmd = &cmd->frame->dcmd;
888
889 size_sync_info = sizeof(struct MR_LD_TARGET_SYNC) *num_lds;
890
891 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
892
893 ci = (struct MR_LD_TARGET_SYNC *)
894 fusion->ld_map[(instance->map_id - 1) & 1];
895 memset(ci, 0, fusion->max_map_sz);
896
897 ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1];
898
899 ld_sync = (struct MR_LD_TARGET_SYNC *)ci;
900
901 for (i = 0; i < num_lds; i++, ld_sync++) {
902 raid = MR_LdRaidGet(i, map);
903 ld_sync->targetId = MR_GetLDTgtId(i, map);
904 ld_sync->seqNum = raid->seqNum;
905 }
906
907 size_map_info = fusion->current_map_sz;
908
909 dcmd->cmd = MFI_CMD_DCMD;
910 dcmd->cmd_status = 0xFF;
911 dcmd->sge_count = 1;
912 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_WRITE);
913 dcmd->timeout = 0;
914 dcmd->pad_0 = 0;
915 dcmd->data_xfer_len = cpu_to_le32(size_map_info);
916 dcmd->mbox.b[0] = num_lds;
917 dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG;
918 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
919 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
920 dcmd->sgl.sge32[0].length = cpu_to_le32(size_map_info);
921
922 instance->map_update_cmd = cmd;
923
924 instance->instancet->issue_dcmd(instance, cmd);
925
926 return ret;
927 }
928
929 /*
930 * meagasas_display_intel_branding - Display branding string
931 * @instance: per adapter object
932 *
933 * Return nothing.
934 */
935 static void
936 megasas_display_intel_branding(struct megasas_instance *instance)
937 {
938 if (instance->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL)
939 return;
940
941 switch (instance->pdev->device) {
942 case PCI_DEVICE_ID_LSI_INVADER:
943 switch (instance->pdev->subsystem_device) {
944 case MEGARAID_INTEL_RS3DC080_SSDID:
945 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
946 instance->host->host_no,
947 MEGARAID_INTEL_RS3DC080_BRANDING);
948 break;
949 case MEGARAID_INTEL_RS3DC040_SSDID:
950 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
951 instance->host->host_no,
952 MEGARAID_INTEL_RS3DC040_BRANDING);
953 break;
954 case MEGARAID_INTEL_RS3SC008_SSDID:
955 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
956 instance->host->host_no,
957 MEGARAID_INTEL_RS3SC008_BRANDING);
958 break;
959 case MEGARAID_INTEL_RS3MC044_SSDID:
960 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
961 instance->host->host_no,
962 MEGARAID_INTEL_RS3MC044_BRANDING);
963 break;
964 default:
965 break;
966 }
967 break;
968 case PCI_DEVICE_ID_LSI_FURY:
969 switch (instance->pdev->subsystem_device) {
970 case MEGARAID_INTEL_RS3WC080_SSDID:
971 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
972 instance->host->host_no,
973 MEGARAID_INTEL_RS3WC080_BRANDING);
974 break;
975 case MEGARAID_INTEL_RS3WC040_SSDID:
976 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
977 instance->host->host_no,
978 MEGARAID_INTEL_RS3WC040_BRANDING);
979 break;
980 default:
981 break;
982 }
983 break;
984 default:
985 break;
986 }
987 }
988
989 /**
990 * megasas_init_adapter_fusion - Initializes the FW
991 * @instance: Adapter soft state
992 *
993 * This is the main function for initializing firmware.
994 */
995 u32
996 megasas_init_adapter_fusion(struct megasas_instance *instance)
997 {
998 struct megasas_register_set __iomem *reg_set;
999 struct fusion_context *fusion;
1000 u32 max_cmd;
1001 int i = 0, count;
1002
1003 fusion = instance->ctrl_context;
1004
1005 reg_set = instance->reg_set;
1006
1007 /*
1008 * Get various operational parameters from status register
1009 */
1010 instance->max_fw_cmds =
1011 instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
1012 instance->max_fw_cmds = min(instance->max_fw_cmds, (u16)1008);
1013
1014 /*
1015 * Reduce the max supported cmds by 1. This is to ensure that the
1016 * reply_q_sz (1 more than the max cmd that driver may send)
1017 * does not exceed max cmds that the FW can support
1018 */
1019 instance->max_fw_cmds = instance->max_fw_cmds-1;
1020 /* Only internal cmds (DCMD) need to have MFI frames */
1021 instance->max_mfi_cmds = MEGASAS_INT_CMDS;
1022
1023 max_cmd = instance->max_fw_cmds;
1024
1025 fusion->reply_q_depth = 2 * (((max_cmd + 1 + 15)/16)*16);
1026
1027 fusion->request_alloc_sz =
1028 sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *max_cmd;
1029 fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION)
1030 *(fusion->reply_q_depth);
1031 fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE +
1032 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE *
1033 (max_cmd + 1)); /* Extra 1 for SMID 0 */
1034
1035 fusion->max_sge_in_main_msg =
1036 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
1037 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16;
1038
1039 fusion->max_sge_in_chain =
1040 MEGASAS_MAX_SZ_CHAIN_FRAME / sizeof(union MPI2_SGE_IO_UNION);
1041
1042 instance->max_num_sge = rounddown_pow_of_two(
1043 fusion->max_sge_in_main_msg + fusion->max_sge_in_chain - 2);
1044
1045 /* Used for pass thru MFI frame (DCMD) */
1046 fusion->chain_offset_mfi_pthru =
1047 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16;
1048
1049 fusion->chain_offset_io_request =
1050 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
1051 sizeof(union MPI2_SGE_IO_UNION))/16;
1052
1053 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
1054 for (i = 0 ; i < count; i++)
1055 fusion->last_reply_idx[i] = 0;
1056
1057 /*
1058 * Allocate memory for descriptors
1059 * Create a pool of commands
1060 */
1061 if (megasas_alloc_cmds(instance))
1062 goto fail_alloc_mfi_cmds;
1063 if (megasas_alloc_cmds_fusion(instance))
1064 goto fail_alloc_cmds;
1065
1066 if (megasas_ioc_init_fusion(instance))
1067 goto fail_ioc_init;
1068
1069 megasas_display_intel_branding(instance);
1070 if (megasas_get_ctrl_info(instance)) {
1071 dev_err(&instance->pdev->dev,
1072 "Could not get controller info. Fail from %s %d\n",
1073 __func__, __LINE__);
1074 goto fail_ioc_init;
1075 }
1076
1077 instance->flag_ieee = 1;
1078 fusion->fast_path_io = 0;
1079
1080 fusion->drv_map_pages = get_order(fusion->drv_map_sz);
1081 for (i = 0; i < 2; i++) {
1082 fusion->ld_map[i] = NULL;
1083 fusion->ld_drv_map[i] = (void *)__get_free_pages(GFP_KERNEL,
1084 fusion->drv_map_pages);
1085 if (!fusion->ld_drv_map[i]) {
1086 dev_err(&instance->pdev->dev, "Could not allocate "
1087 "memory for local map info for %d pages\n",
1088 fusion->drv_map_pages);
1089 if (i == 1)
1090 free_pages((ulong)fusion->ld_drv_map[0],
1091 fusion->drv_map_pages);
1092 goto fail_ioc_init;
1093 }
1094 memset(fusion->ld_drv_map[i], 0,
1095 ((1 << PAGE_SHIFT) << fusion->drv_map_pages));
1096 }
1097
1098 for (i = 0; i < 2; i++) {
1099 fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev,
1100 fusion->max_map_sz,
1101 &fusion->ld_map_phys[i],
1102 GFP_KERNEL);
1103 if (!fusion->ld_map[i]) {
1104 printk(KERN_ERR "megasas: Could not allocate memory "
1105 "for map info\n");
1106 goto fail_map_info;
1107 }
1108 }
1109
1110 if (!megasas_get_map_info(instance))
1111 megasas_sync_map_info(instance);
1112
1113 return 0;
1114
1115 fail_map_info:
1116 if (i == 1)
1117 dma_free_coherent(&instance->pdev->dev, fusion->max_map_sz,
1118 fusion->ld_map[0], fusion->ld_map_phys[0]);
1119 fail_ioc_init:
1120 megasas_free_cmds_fusion(instance);
1121 fail_alloc_cmds:
1122 megasas_free_cmds(instance);
1123 fail_alloc_mfi_cmds:
1124 return 1;
1125 }
1126
1127 /**
1128 * megasas_fire_cmd_fusion - Sends command to the FW
1129 * @frame_phys_addr : Physical address of cmd
1130 * @frame_count : Number of frames for the command
1131 * @regs : MFI register set
1132 */
1133 void
1134 megasas_fire_cmd_fusion(struct megasas_instance *instance,
1135 dma_addr_t req_desc_lo,
1136 u32 req_desc_hi,
1137 struct megasas_register_set __iomem *regs)
1138 {
1139 #if defined(writeq) && defined(CONFIG_64BIT)
1140 u64 req_data = (((u64)le32_to_cpu(req_desc_hi) << 32) |
1141 le32_to_cpu(req_desc_lo));
1142
1143 writeq(req_data, &(regs)->inbound_low_queue_port);
1144 #else
1145 unsigned long flags;
1146
1147 spin_lock_irqsave(&instance->hba_lock, flags);
1148
1149 writel(le32_to_cpu(req_desc_lo), &(regs)->inbound_low_queue_port);
1150 writel(le32_to_cpu(req_desc_hi), &(regs)->inbound_high_queue_port);
1151 spin_unlock_irqrestore(&instance->hba_lock, flags);
1152 #endif
1153 }
1154
1155 /**
1156 * map_cmd_status - Maps FW cmd status to OS cmd status
1157 * @cmd : Pointer to cmd
1158 * @status : status of cmd returned by FW
1159 * @ext_status : ext status of cmd returned by FW
1160 */
1161
1162 void
1163 map_cmd_status(struct megasas_cmd_fusion *cmd, u8 status, u8 ext_status)
1164 {
1165
1166 switch (status) {
1167
1168 case MFI_STAT_OK:
1169 cmd->scmd->result = DID_OK << 16;
1170 break;
1171
1172 case MFI_STAT_SCSI_IO_FAILED:
1173 case MFI_STAT_LD_INIT_IN_PROGRESS:
1174 cmd->scmd->result = (DID_ERROR << 16) | ext_status;
1175 break;
1176
1177 case MFI_STAT_SCSI_DONE_WITH_ERROR:
1178
1179 cmd->scmd->result = (DID_OK << 16) | ext_status;
1180 if (ext_status == SAM_STAT_CHECK_CONDITION) {
1181 memset(cmd->scmd->sense_buffer, 0,
1182 SCSI_SENSE_BUFFERSIZE);
1183 memcpy(cmd->scmd->sense_buffer, cmd->sense,
1184 SCSI_SENSE_BUFFERSIZE);
1185 cmd->scmd->result |= DRIVER_SENSE << 24;
1186 }
1187 break;
1188
1189 case MFI_STAT_LD_OFFLINE:
1190 case MFI_STAT_DEVICE_NOT_FOUND:
1191 cmd->scmd->result = DID_BAD_TARGET << 16;
1192 break;
1193 case MFI_STAT_CONFIG_SEQ_MISMATCH:
1194 cmd->scmd->result = DID_IMM_RETRY << 16;
1195 break;
1196 default:
1197 printk(KERN_DEBUG "megasas: FW status %#x\n", status);
1198 cmd->scmd->result = DID_ERROR << 16;
1199 break;
1200 }
1201 }
1202
1203 /**
1204 * megasas_make_sgl_fusion - Prepares 32-bit SGL
1205 * @instance: Adapter soft state
1206 * @scp: SCSI command from the mid-layer
1207 * @sgl_ptr: SGL to be filled in
1208 * @cmd: cmd we are working on
1209 *
1210 * If successful, this function returns the number of SG elements.
1211 */
1212 static int
1213 megasas_make_sgl_fusion(struct megasas_instance *instance,
1214 struct scsi_cmnd *scp,
1215 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
1216 struct megasas_cmd_fusion *cmd)
1217 {
1218 int i, sg_processed, sge_count;
1219 struct scatterlist *os_sgl;
1220 struct fusion_context *fusion;
1221
1222 fusion = instance->ctrl_context;
1223
1224 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
1225 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
1226 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr;
1227 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
1228 sgl_ptr_end->Flags = 0;
1229 }
1230
1231 sge_count = scsi_dma_map(scp);
1232
1233 BUG_ON(sge_count < 0);
1234
1235 if (sge_count > instance->max_num_sge || !sge_count)
1236 return sge_count;
1237
1238 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1239 sgl_ptr->Length = cpu_to_le32(sg_dma_len(os_sgl));
1240 sgl_ptr->Address = cpu_to_le64(sg_dma_address(os_sgl));
1241 sgl_ptr->Flags = 0;
1242 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
1243 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
1244 if (i == sge_count - 1)
1245 sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST;
1246 }
1247 sgl_ptr++;
1248
1249 sg_processed = i + 1;
1250
1251 if ((sg_processed == (fusion->max_sge_in_main_msg - 1)) &&
1252 (sge_count > fusion->max_sge_in_main_msg)) {
1253
1254 struct MPI25_IEEE_SGE_CHAIN64 *sg_chain;
1255 if ((instance->pdev->device ==
1256 PCI_DEVICE_ID_LSI_INVADER) ||
1257 (instance->pdev->device ==
1258 PCI_DEVICE_ID_LSI_FURY)) {
1259 if ((le16_to_cpu(cmd->io_request->IoFlags) &
1260 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) !=
1261 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH)
1262 cmd->io_request->ChainOffset =
1263 fusion->
1264 chain_offset_io_request;
1265 else
1266 cmd->io_request->ChainOffset = 0;
1267 } else
1268 cmd->io_request->ChainOffset =
1269 fusion->chain_offset_io_request;
1270
1271 sg_chain = sgl_ptr;
1272 /* Prepare chain element */
1273 sg_chain->NextChainOffset = 0;
1274 if ((instance->pdev->device ==
1275 PCI_DEVICE_ID_LSI_INVADER) ||
1276 (instance->pdev->device ==
1277 PCI_DEVICE_ID_LSI_FURY))
1278 sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT;
1279 else
1280 sg_chain->Flags =
1281 (IEEE_SGE_FLAGS_CHAIN_ELEMENT |
1282 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR);
1283 sg_chain->Length = cpu_to_le32((sizeof(union MPI2_SGE_IO_UNION) * (sge_count - sg_processed)));
1284 sg_chain->Address = cpu_to_le64(cmd->sg_frame_phys_addr);
1285
1286 sgl_ptr =
1287 (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame;
1288 }
1289 }
1290
1291 return sge_count;
1292 }
1293
1294 /**
1295 * megasas_set_pd_lba - Sets PD LBA
1296 * @cdb: CDB
1297 * @cdb_len: cdb length
1298 * @start_blk: Start block of IO
1299 *
1300 * Used to set the PD LBA in CDB for FP IOs
1301 */
1302 void
1303 megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len,
1304 struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp,
1305 struct MR_DRV_RAID_MAP_ALL *local_map_ptr, u32 ref_tag)
1306 {
1307 struct MR_LD_RAID *raid;
1308 u32 ld;
1309 u64 start_blk = io_info->pdBlock;
1310 u8 *cdb = io_request->CDB.CDB32;
1311 u32 num_blocks = io_info->numBlocks;
1312 u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0;
1313
1314 /* Check if T10 PI (DIF) is enabled for this LD */
1315 ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr);
1316 raid = MR_LdRaidGet(ld, local_map_ptr);
1317 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) {
1318 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
1319 cdb[0] = MEGASAS_SCSI_VARIABLE_LENGTH_CMD;
1320 cdb[7] = MEGASAS_SCSI_ADDL_CDB_LEN;
1321
1322 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1323 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32;
1324 else
1325 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32;
1326 cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL;
1327
1328 /* LBA */
1329 cdb[12] = (u8)((start_blk >> 56) & 0xff);
1330 cdb[13] = (u8)((start_blk >> 48) & 0xff);
1331 cdb[14] = (u8)((start_blk >> 40) & 0xff);
1332 cdb[15] = (u8)((start_blk >> 32) & 0xff);
1333 cdb[16] = (u8)((start_blk >> 24) & 0xff);
1334 cdb[17] = (u8)((start_blk >> 16) & 0xff);
1335 cdb[18] = (u8)((start_blk >> 8) & 0xff);
1336 cdb[19] = (u8)(start_blk & 0xff);
1337
1338 /* Logical block reference tag */
1339 io_request->CDB.EEDP32.PrimaryReferenceTag =
1340 cpu_to_be32(ref_tag);
1341 io_request->CDB.EEDP32.PrimaryApplicationTagMask = cpu_to_be16(0xffff);
1342 io_request->IoFlags = cpu_to_le16(32); /* Specify 32-byte cdb */
1343
1344 /* Transfer length */
1345 cdb[28] = (u8)((num_blocks >> 24) & 0xff);
1346 cdb[29] = (u8)((num_blocks >> 16) & 0xff);
1347 cdb[30] = (u8)((num_blocks >> 8) & 0xff);
1348 cdb[31] = (u8)(num_blocks & 0xff);
1349
1350 /* set SCSI IO EEDPFlags */
1351 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) {
1352 io_request->EEDPFlags = cpu_to_le16(
1353 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
1354 MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
1355 MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP |
1356 MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG |
1357 MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD);
1358 } else {
1359 io_request->EEDPFlags = cpu_to_le16(
1360 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
1361 MPI2_SCSIIO_EEDPFLAGS_INSERT_OP);
1362 }
1363 io_request->Control |= cpu_to_le32((0x4 << 26));
1364 io_request->EEDPBlockSize = cpu_to_le32(scp->device->sector_size);
1365 } else {
1366 /* Some drives don't support 16/12 byte CDB's, convert to 10 */
1367 if (((cdb_len == 12) || (cdb_len == 16)) &&
1368 (start_blk <= 0xffffffff)) {
1369 if (cdb_len == 16) {
1370 opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10;
1371 flagvals = cdb[1];
1372 groupnum = cdb[14];
1373 control = cdb[15];
1374 } else {
1375 opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10;
1376 flagvals = cdb[1];
1377 groupnum = cdb[10];
1378 control = cdb[11];
1379 }
1380
1381 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
1382
1383 cdb[0] = opcode;
1384 cdb[1] = flagvals;
1385 cdb[6] = groupnum;
1386 cdb[9] = control;
1387
1388 /* Transfer length */
1389 cdb[8] = (u8)(num_blocks & 0xff);
1390 cdb[7] = (u8)((num_blocks >> 8) & 0xff);
1391
1392 io_request->IoFlags = cpu_to_le16(10); /* Specify 10-byte cdb */
1393 cdb_len = 10;
1394 } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) {
1395 /* Convert to 16 byte CDB for large LBA's */
1396 switch (cdb_len) {
1397 case 6:
1398 opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16;
1399 control = cdb[5];
1400 break;
1401 case 10:
1402 opcode =
1403 cdb[0] == READ_10 ? READ_16 : WRITE_16;
1404 flagvals = cdb[1];
1405 groupnum = cdb[6];
1406 control = cdb[9];
1407 break;
1408 case 12:
1409 opcode =
1410 cdb[0] == READ_12 ? READ_16 : WRITE_16;
1411 flagvals = cdb[1];
1412 groupnum = cdb[10];
1413 control = cdb[11];
1414 break;
1415 }
1416
1417 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
1418
1419 cdb[0] = opcode;
1420 cdb[1] = flagvals;
1421 cdb[14] = groupnum;
1422 cdb[15] = control;
1423
1424 /* Transfer length */
1425 cdb[13] = (u8)(num_blocks & 0xff);
1426 cdb[12] = (u8)((num_blocks >> 8) & 0xff);
1427 cdb[11] = (u8)((num_blocks >> 16) & 0xff);
1428 cdb[10] = (u8)((num_blocks >> 24) & 0xff);
1429
1430 io_request->IoFlags = cpu_to_le16(16); /* Specify 16-byte cdb */
1431 cdb_len = 16;
1432 }
1433
1434 /* Normal case, just load LBA here */
1435 switch (cdb_len) {
1436 case 6:
1437 {
1438 u8 val = cdb[1] & 0xE0;
1439 cdb[3] = (u8)(start_blk & 0xff);
1440 cdb[2] = (u8)((start_blk >> 8) & 0xff);
1441 cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f);
1442 break;
1443 }
1444 case 10:
1445 cdb[5] = (u8)(start_blk & 0xff);
1446 cdb[4] = (u8)((start_blk >> 8) & 0xff);
1447 cdb[3] = (u8)((start_blk >> 16) & 0xff);
1448 cdb[2] = (u8)((start_blk >> 24) & 0xff);
1449 break;
1450 case 12:
1451 cdb[5] = (u8)(start_blk & 0xff);
1452 cdb[4] = (u8)((start_blk >> 8) & 0xff);
1453 cdb[3] = (u8)((start_blk >> 16) & 0xff);
1454 cdb[2] = (u8)((start_blk >> 24) & 0xff);
1455 break;
1456 case 16:
1457 cdb[9] = (u8)(start_blk & 0xff);
1458 cdb[8] = (u8)((start_blk >> 8) & 0xff);
1459 cdb[7] = (u8)((start_blk >> 16) & 0xff);
1460 cdb[6] = (u8)((start_blk >> 24) & 0xff);
1461 cdb[5] = (u8)((start_blk >> 32) & 0xff);
1462 cdb[4] = (u8)((start_blk >> 40) & 0xff);
1463 cdb[3] = (u8)((start_blk >> 48) & 0xff);
1464 cdb[2] = (u8)((start_blk >> 56) & 0xff);
1465 break;
1466 }
1467 }
1468 }
1469
1470 /**
1471 * megasas_build_ldio_fusion - Prepares IOs to devices
1472 * @instance: Adapter soft state
1473 * @scp: SCSI command
1474 * @cmd: Command to be prepared
1475 *
1476 * Prepares the io_request and chain elements (sg_frame) for IO
1477 * The IO can be for PD (Fast Path) or LD
1478 */
1479 void
1480 megasas_build_ldio_fusion(struct megasas_instance *instance,
1481 struct scsi_cmnd *scp,
1482 struct megasas_cmd_fusion *cmd)
1483 {
1484 u8 fp_possible;
1485 u32 start_lba_lo, start_lba_hi, device_id, datalength = 0;
1486 struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
1487 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
1488 struct IO_REQUEST_INFO io_info;
1489 struct fusion_context *fusion;
1490 struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1491 u8 *raidLUN;
1492
1493 device_id = MEGASAS_DEV_INDEX(instance, scp);
1494
1495 fusion = instance->ctrl_context;
1496
1497 io_request = cmd->io_request;
1498 io_request->RaidContext.VirtualDiskTgtId = cpu_to_le16(device_id);
1499 io_request->RaidContext.status = 0;
1500 io_request->RaidContext.exStatus = 0;
1501
1502 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
1503
1504 start_lba_lo = 0;
1505 start_lba_hi = 0;
1506 fp_possible = 0;
1507
1508 /*
1509 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1510 */
1511 if (scp->cmd_len == 6) {
1512 datalength = (u32) scp->cmnd[4];
1513 start_lba_lo = ((u32) scp->cmnd[1] << 16) |
1514 ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
1515
1516 start_lba_lo &= 0x1FFFFF;
1517 }
1518
1519 /*
1520 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1521 */
1522 else if (scp->cmd_len == 10) {
1523 datalength = (u32) scp->cmnd[8] |
1524 ((u32) scp->cmnd[7] << 8);
1525 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1526 ((u32) scp->cmnd[3] << 16) |
1527 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1528 }
1529
1530 /*
1531 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1532 */
1533 else if (scp->cmd_len == 12) {
1534 datalength = ((u32) scp->cmnd[6] << 24) |
1535 ((u32) scp->cmnd[7] << 16) |
1536 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1537 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1538 ((u32) scp->cmnd[3] << 16) |
1539 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1540 }
1541
1542 /*
1543 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1544 */
1545 else if (scp->cmd_len == 16) {
1546 datalength = ((u32) scp->cmnd[10] << 24) |
1547 ((u32) scp->cmnd[11] << 16) |
1548 ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
1549 start_lba_lo = ((u32) scp->cmnd[6] << 24) |
1550 ((u32) scp->cmnd[7] << 16) |
1551 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1552
1553 start_lba_hi = ((u32) scp->cmnd[2] << 24) |
1554 ((u32) scp->cmnd[3] << 16) |
1555 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1556 }
1557
1558 memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO));
1559 io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo;
1560 io_info.numBlocks = datalength;
1561 io_info.ldTgtId = device_id;
1562 io_request->DataLength = cpu_to_le32(scsi_bufflen(scp));
1563
1564 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1565 io_info.isRead = 1;
1566
1567 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1568
1569 if ((MR_TargetIdToLdGet(device_id, local_map_ptr) >=
1570 instance->fw_supported_vd_count) || (!fusion->fast_path_io)) {
1571 io_request->RaidContext.regLockFlags = 0;
1572 fp_possible = 0;
1573 } else {
1574 if (MR_BuildRaidContext(instance, &io_info,
1575 &io_request->RaidContext,
1576 local_map_ptr, &raidLUN))
1577 fp_possible = io_info.fpOkForIo;
1578 }
1579
1580 /* Use smp_processor_id() for now until cmd->request->cpu is CPU
1581 id by default, not CPU group id, otherwise all MSI-X queues won't
1582 be utilized */
1583 cmd->request_desc->SCSIIO.MSIxIndex = instance->msix_vectors ?
1584 smp_processor_id() % instance->msix_vectors : 0;
1585
1586 if (fp_possible) {
1587 megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp,
1588 local_map_ptr, start_lba_lo);
1589 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
1590 cmd->request_desc->SCSIIO.RequestFlags =
1591 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY
1592 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1593 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
1594 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
1595 if (io_request->RaidContext.regLockFlags ==
1596 REGION_TYPE_UNUSED)
1597 cmd->request_desc->SCSIIO.RequestFlags =
1598 (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
1599 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1600 io_request->RaidContext.Type = MPI2_TYPE_CUDA;
1601 io_request->RaidContext.nseg = 0x1;
1602 io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
1603 io_request->RaidContext.regLockFlags |=
1604 (MR_RL_FLAGS_GRANT_DESTINATION_CUDA |
1605 MR_RL_FLAGS_SEQ_NUM_ENABLE);
1606 }
1607 if ((fusion->load_balance_info[device_id].loadBalanceFlag) &&
1608 (io_info.isRead)) {
1609 io_info.devHandle =
1610 get_updated_dev_handle(instance,
1611 &fusion->load_balance_info[device_id],
1612 &io_info);
1613 scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG;
1614 cmd->pd_r1_lb = io_info.pd_after_lb;
1615 } else
1616 scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
1617 cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle;
1618 io_request->DevHandle = io_info.devHandle;
1619 /* populate the LUN field */
1620 memcpy(io_request->LUN, raidLUN, 8);
1621 } else {
1622 io_request->RaidContext.timeoutValue =
1623 cpu_to_le16(local_map_ptr->raidMap.fpPdIoTimeoutSec);
1624 cmd->request_desc->SCSIIO.RequestFlags =
1625 (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO
1626 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1627 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
1628 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
1629 if (io_request->RaidContext.regLockFlags ==
1630 REGION_TYPE_UNUSED)
1631 cmd->request_desc->SCSIIO.RequestFlags =
1632 (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
1633 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1634 io_request->RaidContext.Type = MPI2_TYPE_CUDA;
1635 io_request->RaidContext.regLockFlags |=
1636 (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 |
1637 MR_RL_FLAGS_SEQ_NUM_ENABLE);
1638 io_request->RaidContext.nseg = 0x1;
1639 }
1640 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
1641 io_request->DevHandle = cpu_to_le16(device_id);
1642 } /* Not FP */
1643 }
1644
1645 /**
1646 * megasas_build_dcdb_fusion - Prepares IOs to devices
1647 * @instance: Adapter soft state
1648 * @scp: SCSI command
1649 * @cmd: Command to be prepared
1650 *
1651 * Prepares the io_request frame for non-io cmds
1652 */
1653 static void
1654 megasas_build_dcdb_fusion(struct megasas_instance *instance,
1655 struct scsi_cmnd *scmd,
1656 struct megasas_cmd_fusion *cmd)
1657 {
1658 u32 device_id;
1659 struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
1660 u16 pd_index = 0;
1661 struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1662 struct fusion_context *fusion = instance->ctrl_context;
1663 u8 span, physArm;
1664 u16 devHandle;
1665 u32 ld, arRef, pd;
1666 struct MR_LD_RAID *raid;
1667 struct RAID_CONTEXT *pRAID_Context;
1668
1669 io_request = cmd->io_request;
1670 device_id = MEGASAS_DEV_INDEX(instance, scmd);
1671 pd_index = (scmd->device->channel * MEGASAS_MAX_DEV_PER_CHANNEL)
1672 +scmd->device->id;
1673 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1674
1675 io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
1676
1677
1678 /* Check if this is a system PD I/O */
1679 if (scmd->device->channel < MEGASAS_MAX_PD_CHANNELS &&
1680 instance->pd_list[pd_index].driveState == MR_PD_STATE_SYSTEM) {
1681 io_request->Function = 0;
1682 if (fusion->fast_path_io)
1683 io_request->DevHandle =
1684 local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
1685 io_request->RaidContext.timeoutValue =
1686 local_map_ptr->raidMap.fpPdIoTimeoutSec;
1687 io_request->RaidContext.regLockFlags = 0;
1688 io_request->RaidContext.regLockRowLBA = 0;
1689 io_request->RaidContext.regLockLength = 0;
1690 io_request->RaidContext.RAIDFlags =
1691 MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD <<
1692 MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT;
1693 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
1694 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
1695 io_request->IoFlags |= cpu_to_le16(
1696 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
1697 cmd->request_desc->SCSIIO.RequestFlags =
1698 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
1699 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1700 cmd->request_desc->SCSIIO.DevHandle =
1701 local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
1702 cmd->request_desc->SCSIIO.MSIxIndex =
1703 instance->msix_vectors ? smp_processor_id() % instance->msix_vectors : 0;
1704 /*
1705 * If the command is for the tape device, set the
1706 * FP timeout to the os layer timeout value.
1707 */
1708 if (scmd->device->type == TYPE_TAPE) {
1709 if ((scmd->request->timeout / HZ) > 0xFFFF)
1710 io_request->RaidContext.timeoutValue =
1711 0xFFFF;
1712 else
1713 io_request->RaidContext.timeoutValue =
1714 scmd->request->timeout / HZ;
1715 }
1716 } else {
1717 if (scmd->device->channel < MEGASAS_MAX_PD_CHANNELS)
1718 goto NonFastPath;
1719
1720 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
1721 if ((ld >= instance->fw_supported_vd_count) ||
1722 (!fusion->fast_path_io))
1723 goto NonFastPath;
1724
1725 raid = MR_LdRaidGet(ld, local_map_ptr);
1726
1727 /* check if this LD is FP capable */
1728 if (!(raid->capability.fpNonRWCapable))
1729 /* not FP capable, send as non-FP */
1730 goto NonFastPath;
1731
1732 /* get RAID_Context pointer */
1733 pRAID_Context = &io_request->RaidContext;
1734
1735 /* set RAID context values */
1736 pRAID_Context->regLockFlags = REGION_TYPE_SHARED_READ;
1737 pRAID_Context->timeoutValue = cpu_to_le16(raid->fpIoTimeoutForLd);
1738 pRAID_Context->VirtualDiskTgtId = cpu_to_le16(device_id);
1739 pRAID_Context->regLockRowLBA = 0;
1740 pRAID_Context->regLockLength = 0;
1741 pRAID_Context->configSeqNum = raid->seqNum;
1742
1743 /* get the DevHandle for the PD (since this is
1744 fpNonRWCapable, this is a single disk RAID0) */
1745 span = physArm = 0;
1746 arRef = MR_LdSpanArrayGet(ld, span, local_map_ptr);
1747 pd = MR_ArPdGet(arRef, physArm, local_map_ptr);
1748 devHandle = MR_PdDevHandleGet(pd, local_map_ptr);
1749
1750 /* build request descriptor */
1751 cmd->request_desc->SCSIIO.RequestFlags =
1752 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
1753 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1754 cmd->request_desc->SCSIIO.DevHandle = devHandle;
1755
1756 /* populate the LUN field */
1757 memcpy(io_request->LUN, raid->LUN, 8);
1758
1759 /* build the raidScsiIO structure */
1760 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
1761 io_request->DevHandle = devHandle;
1762
1763 return;
1764
1765 NonFastPath:
1766 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
1767 io_request->DevHandle = cpu_to_le16(device_id);
1768 cmd->request_desc->SCSIIO.RequestFlags =
1769 (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
1770 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1771 }
1772 io_request->RaidContext.VirtualDiskTgtId = cpu_to_le16(device_id);
1773 int_to_scsilun(scmd->device->lun, (struct scsi_lun *)io_request->LUN);
1774 }
1775
1776 /**
1777 * megasas_build_io_fusion - Prepares IOs to devices
1778 * @instance: Adapter soft state
1779 * @scp: SCSI command
1780 * @cmd: Command to be prepared
1781 *
1782 * Invokes helper functions to prepare request frames
1783 * and sets flags appropriate for IO/Non-IO cmd
1784 */
1785 int
1786 megasas_build_io_fusion(struct megasas_instance *instance,
1787 struct scsi_cmnd *scp,
1788 struct megasas_cmd_fusion *cmd)
1789 {
1790 u32 device_id, sge_count;
1791 struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request;
1792
1793 device_id = MEGASAS_DEV_INDEX(instance, scp);
1794
1795 /* Zero out some fields so they don't get reused */
1796 memset(io_request->LUN, 0x0, 8);
1797 io_request->CDB.EEDP32.PrimaryReferenceTag = 0;
1798 io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0;
1799 io_request->EEDPFlags = 0;
1800 io_request->Control = 0;
1801 io_request->EEDPBlockSize = 0;
1802 io_request->ChainOffset = 0;
1803 io_request->RaidContext.RAIDFlags = 0;
1804 io_request->RaidContext.Type = 0;
1805 io_request->RaidContext.nseg = 0;
1806
1807 memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len);
1808 /*
1809 * Just the CDB length,rest of the Flags are zero
1810 * This will be modified for FP in build_ldio_fusion
1811 */
1812 io_request->IoFlags = cpu_to_le16(scp->cmd_len);
1813
1814 if (megasas_is_ldio(scp))
1815 megasas_build_ldio_fusion(instance, scp, cmd);
1816 else
1817 megasas_build_dcdb_fusion(instance, scp, cmd);
1818
1819 /*
1820 * Construct SGL
1821 */
1822
1823 sge_count =
1824 megasas_make_sgl_fusion(instance, scp,
1825 (struct MPI25_IEEE_SGE_CHAIN64 *)
1826 &io_request->SGL, cmd);
1827
1828 if (sge_count > instance->max_num_sge) {
1829 printk(KERN_ERR "megasas: Error. sge_count (0x%x) exceeds "
1830 "max (0x%x) allowed\n", sge_count,
1831 instance->max_num_sge);
1832 return 1;
1833 }
1834
1835 io_request->RaidContext.numSGE = sge_count;
1836
1837 io_request->SGLFlags = cpu_to_le16(MPI2_SGE_FLAGS_64_BIT_ADDRESSING);
1838
1839 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1840 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_WRITE);
1841 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1842 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_READ);
1843
1844 io_request->SGLOffset0 =
1845 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4;
1846
1847 io_request->SenseBufferLowAddress = cpu_to_le32(cmd->sense_phys_addr);
1848 io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
1849
1850 cmd->scmd = scp;
1851 scp->SCp.ptr = (char *)cmd;
1852
1853 return 0;
1854 }
1855
1856 union MEGASAS_REQUEST_DESCRIPTOR_UNION *
1857 megasas_get_request_descriptor(struct megasas_instance *instance, u16 index)
1858 {
1859 u8 *p;
1860 struct fusion_context *fusion;
1861
1862 if (index >= instance->max_fw_cmds) {
1863 printk(KERN_ERR "megasas: Invalid SMID (0x%x)request for "
1864 "descriptor for scsi%d\n", index,
1865 instance->host->host_no);
1866 return NULL;
1867 }
1868 fusion = instance->ctrl_context;
1869 p = fusion->req_frames_desc
1870 +sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *index;
1871
1872 return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p;
1873 }
1874
1875 /**
1876 * megasas_build_and_issue_cmd_fusion -Main routine for building and
1877 * issuing non IOCTL cmd
1878 * @instance: Adapter soft state
1879 * @scmd: pointer to scsi cmd from OS
1880 */
1881 static u32
1882 megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance,
1883 struct scsi_cmnd *scmd)
1884 {
1885 struct megasas_cmd_fusion *cmd;
1886 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
1887 u32 index;
1888 struct fusion_context *fusion;
1889
1890 fusion = instance->ctrl_context;
1891
1892 cmd = megasas_get_cmd_fusion(instance);
1893 if (!cmd)
1894 return SCSI_MLQUEUE_HOST_BUSY;
1895
1896 index = cmd->index;
1897
1898 req_desc = megasas_get_request_descriptor(instance, index-1);
1899 if (!req_desc)
1900 return 1;
1901
1902 req_desc->Words = 0;
1903 cmd->request_desc = req_desc;
1904
1905 if (megasas_build_io_fusion(instance, scmd, cmd)) {
1906 megasas_return_cmd_fusion(instance, cmd);
1907 printk(KERN_ERR "megasas: Error building command.\n");
1908 cmd->request_desc = NULL;
1909 return 1;
1910 }
1911
1912 req_desc = cmd->request_desc;
1913 req_desc->SCSIIO.SMID = cpu_to_le16(index);
1914
1915 if (cmd->io_request->ChainOffset != 0 &&
1916 cmd->io_request->ChainOffset != 0xF)
1917 printk(KERN_ERR "megasas: The chain offset value is not "
1918 "correct : %x\n", cmd->io_request->ChainOffset);
1919
1920 /*
1921 * Issue the command to the FW
1922 */
1923 atomic_inc(&instance->fw_outstanding);
1924
1925 instance->instancet->fire_cmd(instance,
1926 req_desc->u.low, req_desc->u.high,
1927 instance->reg_set);
1928
1929 return 0;
1930 }
1931
1932 /**
1933 * complete_cmd_fusion - Completes command
1934 * @instance: Adapter soft state
1935 * Completes all commands that is in reply descriptor queue
1936 */
1937 int
1938 complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex)
1939 {
1940 union MPI2_REPLY_DESCRIPTORS_UNION *desc;
1941 struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc;
1942 struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req;
1943 struct fusion_context *fusion;
1944 struct megasas_cmd *cmd_mfi;
1945 struct megasas_cmd_fusion *cmd_fusion;
1946 u16 smid, num_completed;
1947 u8 reply_descript_type;
1948 u32 status, extStatus, device_id;
1949 union desc_value d_val;
1950 struct LD_LOAD_BALANCE_INFO *lbinfo;
1951 int threshold_reply_count = 0;
1952
1953 fusion = instance->ctrl_context;
1954
1955 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
1956 return IRQ_HANDLED;
1957
1958 desc = fusion->reply_frames_desc;
1959 desc += ((MSIxIndex * fusion->reply_alloc_sz)/
1960 sizeof(union MPI2_REPLY_DESCRIPTORS_UNION)) +
1961 fusion->last_reply_idx[MSIxIndex];
1962
1963 reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
1964
1965 d_val.word = desc->Words;
1966
1967 reply_descript_type = reply_desc->ReplyFlags &
1968 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
1969
1970 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
1971 return IRQ_NONE;
1972
1973 num_completed = 0;
1974
1975 while ((d_val.u.low != UINT_MAX) && (d_val.u.high != UINT_MAX)) {
1976 smid = le16_to_cpu(reply_desc->SMID);
1977
1978 cmd_fusion = fusion->cmd_list[smid - 1];
1979
1980 scsi_io_req =
1981 (struct MPI2_RAID_SCSI_IO_REQUEST *)
1982 cmd_fusion->io_request;
1983
1984 if (cmd_fusion->scmd)
1985 cmd_fusion->scmd->SCp.ptr = NULL;
1986
1987 status = scsi_io_req->RaidContext.status;
1988 extStatus = scsi_io_req->RaidContext.exStatus;
1989
1990 switch (scsi_io_req->Function) {
1991 case MPI2_FUNCTION_SCSI_IO_REQUEST: /*Fast Path IO.*/
1992 /* Update load balancing info */
1993 device_id = MEGASAS_DEV_INDEX(instance,
1994 cmd_fusion->scmd);
1995 lbinfo = &fusion->load_balance_info[device_id];
1996 if (cmd_fusion->scmd->SCp.Status &
1997 MEGASAS_LOAD_BALANCE_FLAG) {
1998 atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]);
1999 cmd_fusion->scmd->SCp.Status &=
2000 ~MEGASAS_LOAD_BALANCE_FLAG;
2001 }
2002 if (reply_descript_type ==
2003 MPI2_RPY_DESCRIPT_FLAGS_SCSI_IO_SUCCESS) {
2004 if (megasas_dbg_lvl == 5)
2005 printk(KERN_ERR "\nmegasas: FAST Path "
2006 "IO Success\n");
2007 }
2008 /* Fall thru and complete IO */
2009 case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */
2010 /* Map the FW Cmd Status */
2011 map_cmd_status(cmd_fusion, status, extStatus);
2012 scsi_dma_unmap(cmd_fusion->scmd);
2013 cmd_fusion->scmd->scsi_done(cmd_fusion->scmd);
2014 scsi_io_req->RaidContext.status = 0;
2015 scsi_io_req->RaidContext.exStatus = 0;
2016 megasas_return_cmd_fusion(instance, cmd_fusion);
2017 atomic_dec(&instance->fw_outstanding);
2018
2019 break;
2020 case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */
2021 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
2022
2023 if (!cmd_mfi->mpt_pthr_cmd_blocked) {
2024 if (megasas_dbg_lvl == 5)
2025 dev_info(&instance->pdev->dev,
2026 "freeing mfi/mpt pass-through "
2027 "from %s %d\n",
2028 __func__, __LINE__);
2029 megasas_return_mfi_mpt_pthr(instance, cmd_mfi,
2030 cmd_fusion);
2031 }
2032
2033 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
2034 cmd_fusion->flags = 0;
2035 break;
2036 }
2037
2038 fusion->last_reply_idx[MSIxIndex]++;
2039 if (fusion->last_reply_idx[MSIxIndex] >=
2040 fusion->reply_q_depth)
2041 fusion->last_reply_idx[MSIxIndex] = 0;
2042
2043 desc->Words = ULLONG_MAX;
2044 num_completed++;
2045 threshold_reply_count++;
2046
2047 /* Get the next reply descriptor */
2048 if (!fusion->last_reply_idx[MSIxIndex])
2049 desc = fusion->reply_frames_desc +
2050 ((MSIxIndex * fusion->reply_alloc_sz)/
2051 sizeof(union MPI2_REPLY_DESCRIPTORS_UNION));
2052 else
2053 desc++;
2054
2055 reply_desc =
2056 (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
2057
2058 d_val.word = desc->Words;
2059
2060 reply_descript_type = reply_desc->ReplyFlags &
2061 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
2062
2063 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
2064 break;
2065 /*
2066 * Write to reply post host index register after completing threshold
2067 * number of reply counts and still there are more replies in reply queue
2068 * pending to be completed
2069 */
2070 if (threshold_reply_count >= THRESHOLD_REPLY_COUNT) {
2071 if ((instance->pdev->device ==
2072 PCI_DEVICE_ID_LSI_INVADER) ||
2073 (instance->pdev->device ==
2074 PCI_DEVICE_ID_LSI_FURY))
2075 writel(((MSIxIndex & 0x7) << 24) |
2076 fusion->last_reply_idx[MSIxIndex],
2077 instance->reply_post_host_index_addr[MSIxIndex/8]);
2078 else
2079 writel((MSIxIndex << 24) |
2080 fusion->last_reply_idx[MSIxIndex],
2081 instance->reply_post_host_index_addr[0]);
2082 threshold_reply_count = 0;
2083 }
2084 }
2085
2086 if (!num_completed)
2087 return IRQ_NONE;
2088
2089 wmb();
2090 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
2091 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
2092 writel(((MSIxIndex & 0x7) << 24) |
2093 fusion->last_reply_idx[MSIxIndex],
2094 instance->reply_post_host_index_addr[MSIxIndex/8]);
2095 else
2096 writel((MSIxIndex << 24) |
2097 fusion->last_reply_idx[MSIxIndex],
2098 instance->reply_post_host_index_addr[0]);
2099 megasas_check_and_restore_queue_depth(instance);
2100 return IRQ_HANDLED;
2101 }
2102
2103 /**
2104 * megasas_complete_cmd_dpc_fusion - Completes command
2105 * @instance: Adapter soft state
2106 *
2107 * Tasklet to complete cmds
2108 */
2109 void
2110 megasas_complete_cmd_dpc_fusion(unsigned long instance_addr)
2111 {
2112 struct megasas_instance *instance =
2113 (struct megasas_instance *)instance_addr;
2114 unsigned long flags;
2115 u32 count, MSIxIndex;
2116
2117 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
2118
2119 /* If we have already declared adapter dead, donot complete cmds */
2120 spin_lock_irqsave(&instance->hba_lock, flags);
2121 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
2122 spin_unlock_irqrestore(&instance->hba_lock, flags);
2123 return;
2124 }
2125 spin_unlock_irqrestore(&instance->hba_lock, flags);
2126
2127 for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++)
2128 complete_cmd_fusion(instance, MSIxIndex);
2129 }
2130
2131 /**
2132 * megasas_isr_fusion - isr entry point
2133 */
2134 irqreturn_t megasas_isr_fusion(int irq, void *devp)
2135 {
2136 struct megasas_irq_context *irq_context = devp;
2137 struct megasas_instance *instance = irq_context->instance;
2138 u32 mfiStatus, fw_state, dma_state;
2139
2140 if (instance->mask_interrupts)
2141 return IRQ_NONE;
2142
2143 if (!instance->msix_vectors) {
2144 mfiStatus = instance->instancet->clear_intr(instance->reg_set);
2145 if (!mfiStatus)
2146 return IRQ_NONE;
2147 }
2148
2149 /* If we are resetting, bail */
2150 if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) {
2151 instance->instancet->clear_intr(instance->reg_set);
2152 return IRQ_HANDLED;
2153 }
2154
2155 if (!complete_cmd_fusion(instance, irq_context->MSIxIndex)) {
2156 instance->instancet->clear_intr(instance->reg_set);
2157 /* If we didn't complete any commands, check for FW fault */
2158 fw_state = instance->instancet->read_fw_status_reg(
2159 instance->reg_set) & MFI_STATE_MASK;
2160 dma_state = instance->instancet->read_fw_status_reg
2161 (instance->reg_set) & MFI_STATE_DMADONE;
2162 if (instance->crash_dump_drv_support &&
2163 instance->crash_dump_app_support) {
2164 /* Start collecting crash, if DMA bit is done */
2165 if ((fw_state == MFI_STATE_FAULT) && dma_state)
2166 schedule_work(&instance->crash_init);
2167 else if (fw_state == MFI_STATE_FAULT)
2168 schedule_work(&instance->work_init);
2169 } else if (fw_state == MFI_STATE_FAULT) {
2170 printk(KERN_WARNING "megaraid_sas: Iop2SysDoorbellInt"
2171 "for scsi%d\n", instance->host->host_no);
2172 schedule_work(&instance->work_init);
2173 }
2174 }
2175
2176 return IRQ_HANDLED;
2177 }
2178
2179 /**
2180 * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru
2181 * @instance: Adapter soft state
2182 * mfi_cmd: megasas_cmd pointer
2183 *
2184 */
2185 u8
2186 build_mpt_mfi_pass_thru(struct megasas_instance *instance,
2187 struct megasas_cmd *mfi_cmd)
2188 {
2189 struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain;
2190 struct MPI2_RAID_SCSI_IO_REQUEST *io_req;
2191 struct megasas_cmd_fusion *cmd;
2192 struct fusion_context *fusion;
2193 struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr;
2194 u32 opcode;
2195
2196 cmd = megasas_get_cmd_fusion(instance);
2197 if (!cmd)
2198 return 1;
2199
2200 /* Save the smid. To be used for returning the cmd */
2201 mfi_cmd->context.smid = cmd->index;
2202 cmd->sync_cmd_idx = mfi_cmd->index;
2203
2204 /* Set this only for Blocked commands */
2205 opcode = le32_to_cpu(mfi_cmd->frame->dcmd.opcode);
2206 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
2207 && (mfi_cmd->frame->dcmd.mbox.b[1] == 1))
2208 mfi_cmd->is_wait_event = 1;
2209
2210 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
2211 mfi_cmd->is_wait_event = 1;
2212
2213 if (mfi_cmd->is_wait_event)
2214 mfi_cmd->mpt_pthr_cmd_blocked = cmd;
2215
2216 /*
2217 * For cmds where the flag is set, store the flag and check
2218 * on completion. For cmds with this flag, don't call
2219 * megasas_complete_cmd
2220 */
2221
2222 if (frame_hdr->flags & cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE))
2223 cmd->flags = MFI_FRAME_DONT_POST_IN_REPLY_QUEUE;
2224
2225 fusion = instance->ctrl_context;
2226 io_req = cmd->io_request;
2227
2228 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
2229 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
2230 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end =
2231 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL;
2232 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
2233 sgl_ptr_end->Flags = 0;
2234 }
2235
2236 mpi25_ieee_chain =
2237 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain;
2238
2239 io_req->Function = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST;
2240 io_req->SGLOffset0 = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST,
2241 SGL) / 4;
2242 io_req->ChainOffset = fusion->chain_offset_mfi_pthru;
2243
2244 mpi25_ieee_chain->Address = cpu_to_le64(mfi_cmd->frame_phys_addr);
2245
2246 mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
2247 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR;
2248
2249 mpi25_ieee_chain->Length = cpu_to_le32(MEGASAS_MAX_SZ_CHAIN_FRAME);
2250
2251 return 0;
2252 }
2253
2254 /**
2255 * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd
2256 * @instance: Adapter soft state
2257 * @cmd: mfi cmd to build
2258 *
2259 */
2260 union MEGASAS_REQUEST_DESCRIPTOR_UNION *
2261 build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
2262 {
2263 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2264 u16 index;
2265
2266 if (build_mpt_mfi_pass_thru(instance, cmd)) {
2267 printk(KERN_ERR "Couldn't build MFI pass thru cmd\n");
2268 return NULL;
2269 }
2270
2271 index = cmd->context.smid;
2272
2273 req_desc = megasas_get_request_descriptor(instance, index - 1);
2274
2275 if (!req_desc)
2276 return NULL;
2277
2278 req_desc->Words = 0;
2279 req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
2280 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2281
2282 req_desc->SCSIIO.SMID = cpu_to_le16(index);
2283
2284 return req_desc;
2285 }
2286
2287 /**
2288 * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd
2289 * @instance: Adapter soft state
2290 * @cmd: mfi cmd pointer
2291 *
2292 */
2293 void
2294 megasas_issue_dcmd_fusion(struct megasas_instance *instance,
2295 struct megasas_cmd *cmd)
2296 {
2297 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2298
2299 req_desc = build_mpt_cmd(instance, cmd);
2300 if (!req_desc) {
2301 printk(KERN_ERR "Couldn't issue MFI pass thru cmd\n");
2302 return;
2303 }
2304 atomic_set(&cmd->mfi_mpt_pthr, MFI_MPT_ATTACHED);
2305 instance->instancet->fire_cmd(instance, req_desc->u.low,
2306 req_desc->u.high, instance->reg_set);
2307 }
2308
2309 /**
2310 * megasas_release_fusion - Reverses the FW initialization
2311 * @intance: Adapter soft state
2312 */
2313 void
2314 megasas_release_fusion(struct megasas_instance *instance)
2315 {
2316 megasas_free_cmds(instance);
2317 megasas_free_cmds_fusion(instance);
2318
2319 iounmap(instance->reg_set);
2320
2321 pci_release_selected_regions(instance->pdev, instance->bar);
2322 }
2323
2324 /**
2325 * megasas_read_fw_status_reg_fusion - returns the current FW status value
2326 * @regs: MFI register set
2327 */
2328 static u32
2329 megasas_read_fw_status_reg_fusion(struct megasas_register_set __iomem *regs)
2330 {
2331 return readl(&(regs)->outbound_scratch_pad);
2332 }
2333
2334 /**
2335 * megasas_alloc_host_crash_buffer - Host buffers for Crash dump collection from Firmware
2336 * @instance: Controller's soft instance
2337 * return: Number of allocated host crash buffers
2338 */
2339 static void
2340 megasas_alloc_host_crash_buffer(struct megasas_instance *instance)
2341 {
2342 unsigned int i;
2343
2344 instance->crash_buf_pages = get_order(CRASH_DMA_BUF_SIZE);
2345 for (i = 0; i < MAX_CRASH_DUMP_SIZE; i++) {
2346 instance->crash_buf[i] = (void *)__get_free_pages(GFP_KERNEL,
2347 instance->crash_buf_pages);
2348 if (!instance->crash_buf[i]) {
2349 dev_info(&instance->pdev->dev, "Firmware crash dump "
2350 "memory allocation failed at index %d\n", i);
2351 break;
2352 }
2353 memset(instance->crash_buf[i], 0,
2354 ((1 << PAGE_SHIFT) << instance->crash_buf_pages));
2355 }
2356 instance->drv_buf_alloc = i;
2357 }
2358
2359 /**
2360 * megasas_free_host_crash_buffer - Host buffers for Crash dump collection from Firmware
2361 * @instance: Controller's soft instance
2362 */
2363 void
2364 megasas_free_host_crash_buffer(struct megasas_instance *instance)
2365 {
2366 unsigned int i
2367 ;
2368 for (i = 0; i < instance->drv_buf_alloc; i++) {
2369 if (instance->crash_buf[i])
2370 free_pages((ulong)instance->crash_buf[i],
2371 instance->crash_buf_pages);
2372 }
2373 instance->drv_buf_index = 0;
2374 instance->drv_buf_alloc = 0;
2375 instance->fw_crash_state = UNAVAILABLE;
2376 instance->fw_crash_buffer_size = 0;
2377 }
2378
2379 /**
2380 * megasas_adp_reset_fusion - For controller reset
2381 * @regs: MFI register set
2382 */
2383 static int
2384 megasas_adp_reset_fusion(struct megasas_instance *instance,
2385 struct megasas_register_set __iomem *regs)
2386 {
2387 return 0;
2388 }
2389
2390 /**
2391 * megasas_check_reset_fusion - For controller reset check
2392 * @regs: MFI register set
2393 */
2394 static int
2395 megasas_check_reset_fusion(struct megasas_instance *instance,
2396 struct megasas_register_set __iomem *regs)
2397 {
2398 return 0;
2399 }
2400
2401 /* This function waits for outstanding commands on fusion to complete */
2402 int megasas_wait_for_outstanding_fusion(struct megasas_instance *instance,
2403 int iotimeout, int *convert)
2404 {
2405 int i, outstanding, retval = 0, hb_seconds_missed = 0;
2406 u32 fw_state;
2407
2408 for (i = 0; i < resetwaittime; i++) {
2409 /* Check if firmware is in fault state */
2410 fw_state = instance->instancet->read_fw_status_reg(
2411 instance->reg_set) & MFI_STATE_MASK;
2412 if (fw_state == MFI_STATE_FAULT) {
2413 printk(KERN_WARNING "megasas: Found FW in FAULT state,"
2414 " will reset adapter scsi%d.\n",
2415 instance->host->host_no);
2416 retval = 1;
2417 goto out;
2418 }
2419 /* If SR-IOV VF mode & heartbeat timeout, don't wait */
2420 if (instance->requestorId && !iotimeout) {
2421 retval = 1;
2422 goto out;
2423 }
2424
2425 /* If SR-IOV VF mode & I/O timeout, check for HB timeout */
2426 if (instance->requestorId && iotimeout) {
2427 if (instance->hb_host_mem->HB.fwCounter !=
2428 instance->hb_host_mem->HB.driverCounter) {
2429 instance->hb_host_mem->HB.driverCounter =
2430 instance->hb_host_mem->HB.fwCounter;
2431 hb_seconds_missed = 0;
2432 } else {
2433 hb_seconds_missed++;
2434 if (hb_seconds_missed ==
2435 (MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF/HZ)) {
2436 printk(KERN_WARNING "megasas: SR-IOV:"
2437 " Heartbeat never completed "
2438 " while polling during I/O "
2439 " timeout handling for "
2440 "scsi%d.\n",
2441 instance->host->host_no);
2442 *convert = 1;
2443 retval = 1;
2444 goto out;
2445 }
2446 }
2447 }
2448
2449 outstanding = atomic_read(&instance->fw_outstanding);
2450 if (!outstanding)
2451 goto out;
2452
2453 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2454 printk(KERN_NOTICE "megasas: [%2d]waiting for %d "
2455 "commands to complete for scsi%d\n", i,
2456 outstanding, instance->host->host_no);
2457 megasas_complete_cmd_dpc_fusion(
2458 (unsigned long)instance);
2459 }
2460 msleep(1000);
2461 }
2462
2463 if (atomic_read(&instance->fw_outstanding)) {
2464 printk("megaraid_sas: pending commands remain after waiting, "
2465 "will reset adapter scsi%d.\n",
2466 instance->host->host_no);
2467 retval = 1;
2468 }
2469 out:
2470 return retval;
2471 }
2472
2473 void megasas_reset_reply_desc(struct megasas_instance *instance)
2474 {
2475 int i, count;
2476 struct fusion_context *fusion;
2477 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
2478
2479 fusion = instance->ctrl_context;
2480 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
2481 for (i = 0 ; i < count ; i++)
2482 fusion->last_reply_idx[i] = 0;
2483 reply_desc = fusion->reply_frames_desc;
2484 for (i = 0 ; i < fusion->reply_q_depth * count; i++, reply_desc++)
2485 reply_desc->Words = ULLONG_MAX;
2486 }
2487
2488 /* Check for a second path that is currently UP */
2489 int megasas_check_mpio_paths(struct megasas_instance *instance,
2490 struct scsi_cmnd *scmd)
2491 {
2492 int i, j, retval = (DID_RESET << 16);
2493
2494 if (instance->mpio && instance->requestorId) {
2495 for (i = 0 ; i < MAX_MGMT_ADAPTERS ; i++)
2496 for (j = 0 ; j < MAX_LOGICAL_DRIVES; j++)
2497 if (megasas_mgmt_info.instance[i] &&
2498 (megasas_mgmt_info.instance[i] != instance) &&
2499 megasas_mgmt_info.instance[i]->mpio &&
2500 megasas_mgmt_info.instance[i]->requestorId
2501 &&
2502 (megasas_mgmt_info.instance[i]->ld_ids[j]
2503 == scmd->device->id)) {
2504 retval = (DID_NO_CONNECT << 16);
2505 goto out;
2506 }
2507 }
2508 out:
2509 return retval;
2510 }
2511
2512 /* Core fusion reset function */
2513 int megasas_reset_fusion(struct Scsi_Host *shost, int iotimeout)
2514 {
2515 int retval = SUCCESS, i, j, retry = 0, convert = 0;
2516 struct megasas_instance *instance;
2517 struct megasas_cmd_fusion *cmd_fusion;
2518 struct fusion_context *fusion;
2519 struct megasas_cmd *cmd_mfi;
2520 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2521 u32 host_diag, abs_state, status_reg, reset_adapter;
2522 u32 io_timeout_in_crash_mode = 0;
2523
2524 instance = (struct megasas_instance *)shost->hostdata;
2525 fusion = instance->ctrl_context;
2526
2527 mutex_lock(&instance->reset_mutex);
2528
2529 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
2530 printk(KERN_WARNING "megaraid_sas: Hardware critical error, "
2531 "returning FAILED for scsi%d.\n",
2532 instance->host->host_no);
2533 mutex_unlock(&instance->reset_mutex);
2534 return FAILED;
2535 }
2536 status_reg = instance->instancet->read_fw_status_reg(instance->reg_set);
2537 abs_state = status_reg & MFI_STATE_MASK;
2538
2539 /* IO timeout detected, forcibly put FW in FAULT state */
2540 if (abs_state != MFI_STATE_FAULT && instance->crash_dump_buf &&
2541 instance->crash_dump_app_support && iotimeout) {
2542 dev_info(&instance->pdev->dev, "IO timeout is detected, "
2543 "forcibly FAULT Firmware\n");
2544 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
2545 status_reg = readl(&instance->reg_set->doorbell);
2546 writel(status_reg | MFI_STATE_FORCE_OCR,
2547 &instance->reg_set->doorbell);
2548 readl(&instance->reg_set->doorbell);
2549 mutex_unlock(&instance->reset_mutex);
2550 do {
2551 ssleep(3);
2552 io_timeout_in_crash_mode++;
2553 dev_dbg(&instance->pdev->dev, "waiting for [%d] "
2554 "seconds for crash dump collection and OCR "
2555 "to be done\n", (io_timeout_in_crash_mode * 3));
2556 } while ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) &&
2557 (io_timeout_in_crash_mode < 80));
2558
2559 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
2560 dev_info(&instance->pdev->dev, "OCR done for IO "
2561 "timeout case\n");
2562 retval = SUCCESS;
2563 } else {
2564 dev_info(&instance->pdev->dev, "Controller is not "
2565 "operational after 240 seconds wait for IO "
2566 "timeout case in FW crash dump mode\n do "
2567 "OCR/kill adapter\n");
2568 retval = megasas_reset_fusion(shost, 0);
2569 }
2570 return retval;
2571 }
2572
2573 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
2574 del_timer_sync(&instance->sriov_heartbeat_timer);
2575 set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
2576 instance->adprecovery = MEGASAS_ADPRESET_SM_POLLING;
2577 instance->instancet->disable_intr(instance);
2578 msleep(1000);
2579
2580 /* First try waiting for commands to complete */
2581 if (megasas_wait_for_outstanding_fusion(instance, iotimeout,
2582 &convert)) {
2583 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
2584 printk(KERN_WARNING "megaraid_sas: resetting fusion "
2585 "adapter scsi%d.\n", instance->host->host_no);
2586 if (convert)
2587 iotimeout = 0;
2588
2589 /* Now return commands back to the OS */
2590 for (i = 0 ; i < instance->max_fw_cmds; i++) {
2591 cmd_fusion = fusion->cmd_list[i];
2592 if (cmd_fusion->scmd) {
2593 scsi_dma_unmap(cmd_fusion->scmd);
2594 cmd_fusion->scmd->result =
2595 megasas_check_mpio_paths(instance,
2596 cmd_fusion->scmd);
2597 cmd_fusion->scmd->scsi_done(cmd_fusion->scmd);
2598 megasas_return_cmd_fusion(instance, cmd_fusion);
2599 atomic_dec(&instance->fw_outstanding);
2600 }
2601 }
2602
2603 status_reg = instance->instancet->read_fw_status_reg(
2604 instance->reg_set);
2605 abs_state = status_reg & MFI_STATE_MASK;
2606 reset_adapter = status_reg & MFI_RESET_ADAPTER;
2607 if (instance->disableOnlineCtrlReset ||
2608 (abs_state == MFI_STATE_FAULT && !reset_adapter)) {
2609 /* Reset not supported, kill adapter */
2610 printk(KERN_WARNING "megaraid_sas: Reset not supported"
2611 ", killing adapter scsi%d.\n",
2612 instance->host->host_no);
2613 megaraid_sas_kill_hba(instance);
2614 instance->skip_heartbeat_timer_del = 1;
2615 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2616 retval = FAILED;
2617 goto out;
2618 }
2619
2620 /* Let SR-IOV VF & PF sync up if there was a HB failure */
2621 if (instance->requestorId && !iotimeout) {
2622 msleep(MEGASAS_OCR_SETTLE_TIME_VF);
2623 /* Look for a late HB update after VF settle time */
2624 if (abs_state == MFI_STATE_OPERATIONAL &&
2625 (instance->hb_host_mem->HB.fwCounter !=
2626 instance->hb_host_mem->HB.driverCounter)) {
2627 instance->hb_host_mem->HB.driverCounter =
2628 instance->hb_host_mem->HB.fwCounter;
2629 printk(KERN_WARNING "megasas: SR-IOV:"
2630 "Late FW heartbeat update for "
2631 "scsi%d.\n",
2632 instance->host->host_no);
2633 } else {
2634 /* In VF mode, first poll for FW ready */
2635 for (i = 0;
2636 i < (MEGASAS_RESET_WAIT_TIME * 1000);
2637 i += 20) {
2638 status_reg =
2639 instance->instancet->
2640 read_fw_status_reg(
2641 instance->reg_set);
2642 abs_state = status_reg &
2643 MFI_STATE_MASK;
2644 if (abs_state == MFI_STATE_READY) {
2645 printk(KERN_WARNING "megasas"
2646 ": SR-IOV: FW was found"
2647 "to be in ready state "
2648 "for scsi%d.\n",
2649 instance->host->host_no);
2650 break;
2651 }
2652 msleep(20);
2653 }
2654 if (abs_state != MFI_STATE_READY) {
2655 printk(KERN_WARNING "megasas: SR-IOV: "
2656 "FW not in ready state after %d"
2657 " seconds for scsi%d, status_reg = "
2658 "0x%x.\n",
2659 MEGASAS_RESET_WAIT_TIME,
2660 instance->host->host_no,
2661 status_reg);
2662 megaraid_sas_kill_hba(instance);
2663 instance->skip_heartbeat_timer_del = 1;
2664 instance->adprecovery =
2665 MEGASAS_HW_CRITICAL_ERROR;
2666 retval = FAILED;
2667 goto out;
2668 }
2669 }
2670 }
2671
2672 /* Now try to reset the chip */
2673 for (i = 0; i < MEGASAS_FUSION_MAX_RESET_TRIES; i++) {
2674 writel(MPI2_WRSEQ_FLUSH_KEY_VALUE,
2675 &instance->reg_set->fusion_seq_offset);
2676 writel(MPI2_WRSEQ_1ST_KEY_VALUE,
2677 &instance->reg_set->fusion_seq_offset);
2678 writel(MPI2_WRSEQ_2ND_KEY_VALUE,
2679 &instance->reg_set->fusion_seq_offset);
2680 writel(MPI2_WRSEQ_3RD_KEY_VALUE,
2681 &instance->reg_set->fusion_seq_offset);
2682 writel(MPI2_WRSEQ_4TH_KEY_VALUE,
2683 &instance->reg_set->fusion_seq_offset);
2684 writel(MPI2_WRSEQ_5TH_KEY_VALUE,
2685 &instance->reg_set->fusion_seq_offset);
2686 writel(MPI2_WRSEQ_6TH_KEY_VALUE,
2687 &instance->reg_set->fusion_seq_offset);
2688
2689 /* Check that the diag write enable (DRWE) bit is on */
2690 host_diag = readl(&instance->reg_set->fusion_host_diag);
2691 retry = 0;
2692 while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) {
2693 msleep(100);
2694 host_diag =
2695 readl(&instance->reg_set->fusion_host_diag);
2696 if (retry++ == 100) {
2697 printk(KERN_WARNING "megaraid_sas: "
2698 "Host diag unlock failed! "
2699 "for scsi%d\n",
2700 instance->host->host_no);
2701 break;
2702 }
2703 }
2704 if (!(host_diag & HOST_DIAG_WRITE_ENABLE))
2705 continue;
2706
2707 /* Send chip reset command */
2708 writel(host_diag | HOST_DIAG_RESET_ADAPTER,
2709 &instance->reg_set->fusion_host_diag);
2710 msleep(3000);
2711
2712 /* Make sure reset adapter bit is cleared */
2713 host_diag = readl(&instance->reg_set->fusion_host_diag);
2714 retry = 0;
2715 while (host_diag & HOST_DIAG_RESET_ADAPTER) {
2716 msleep(100);
2717 host_diag =
2718 readl(&instance->reg_set->fusion_host_diag);
2719 if (retry++ == 1000) {
2720 printk(KERN_WARNING "megaraid_sas: "
2721 "Diag reset adapter never "
2722 "cleared for scsi%d!\n",
2723 instance->host->host_no);
2724 break;
2725 }
2726 }
2727 if (host_diag & HOST_DIAG_RESET_ADAPTER)
2728 continue;
2729
2730 abs_state =
2731 instance->instancet->read_fw_status_reg(
2732 instance->reg_set) & MFI_STATE_MASK;
2733 retry = 0;
2734
2735 while ((abs_state <= MFI_STATE_FW_INIT) &&
2736 (retry++ < 1000)) {
2737 msleep(100);
2738 abs_state =
2739 instance->instancet->read_fw_status_reg(
2740 instance->reg_set) & MFI_STATE_MASK;
2741 }
2742 if (abs_state <= MFI_STATE_FW_INIT) {
2743 printk(KERN_WARNING "megaraid_sas: firmware "
2744 "state < MFI_STATE_FW_INIT, state = "
2745 "0x%x for scsi%d\n", abs_state,
2746 instance->host->host_no);
2747 continue;
2748 }
2749
2750 /* Wait for FW to become ready */
2751 if (megasas_transition_to_ready(instance, 1)) {
2752 printk(KERN_WARNING "megaraid_sas: Failed to "
2753 "transition controller to ready "
2754 "for scsi%d.\n",
2755 instance->host->host_no);
2756 continue;
2757 }
2758
2759 megasas_reset_reply_desc(instance);
2760 if (megasas_ioc_init_fusion(instance)) {
2761 printk(KERN_WARNING "megaraid_sas: "
2762 "megasas_ioc_init_fusion() failed!"
2763 " for scsi%d\n",
2764 instance->host->host_no);
2765 continue;
2766 }
2767
2768 /* Re-fire management commands */
2769 for (j = 0 ; j < instance->max_fw_cmds; j++) {
2770 cmd_fusion = fusion->cmd_list[j];
2771 if (cmd_fusion->sync_cmd_idx !=
2772 (u32)ULONG_MAX) {
2773 cmd_mfi =
2774 instance->
2775 cmd_list[cmd_fusion->sync_cmd_idx];
2776 if (cmd_mfi->frame->dcmd.opcode ==
2777 cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO)) {
2778 megasas_return_mfi_mpt_pthr(instance, cmd_mfi, cmd_fusion);
2779 } else {
2780 req_desc =
2781 megasas_get_request_descriptor(
2782 instance,
2783 cmd_mfi->context.smid
2784 -1);
2785 if (!req_desc) {
2786 printk(KERN_WARNING
2787 "req_desc NULL"
2788 " for scsi%d\n",
2789 instance->host->host_no);
2790 /* Return leaked MPT
2791 frame */
2792 megasas_return_cmd_fusion(instance, cmd_fusion);
2793 } else {
2794 instance->instancet->
2795 fire_cmd(instance,
2796 req_desc->
2797 u.low,
2798 req_desc->
2799 u.high,
2800 instance->
2801 reg_set);
2802 }
2803 }
2804 }
2805 }
2806
2807 if (megasas_get_ctrl_info(instance)) {
2808 dev_info(&instance->pdev->dev,
2809 "Failed from %s %d\n",
2810 __func__, __LINE__);
2811 instance->adprecovery =
2812 MEGASAS_HW_CRITICAL_ERROR;
2813 megaraid_sas_kill_hba(instance);
2814 retval = FAILED;
2815 }
2816 /* Reset load balance info */
2817 memset(fusion->load_balance_info, 0,
2818 sizeof(struct LD_LOAD_BALANCE_INFO)
2819 *MAX_LOGICAL_DRIVES_EXT);
2820
2821 if (!megasas_get_map_info(instance))
2822 megasas_sync_map_info(instance);
2823
2824 clear_bit(MEGASAS_FUSION_IN_RESET,
2825 &instance->reset_flags);
2826 instance->instancet->enable_intr(instance);
2827 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
2828
2829 /* Restart SR-IOV heartbeat */
2830 if (instance->requestorId) {
2831 if (!megasas_sriov_start_heartbeat(instance, 0))
2832 megasas_start_timer(instance,
2833 &instance->sriov_heartbeat_timer,
2834 megasas_sriov_heartbeat_handler,
2835 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2836 else
2837 instance->skip_heartbeat_timer_del = 1;
2838 }
2839
2840 /* Adapter reset completed successfully */
2841 printk(KERN_WARNING "megaraid_sas: Reset "
2842 "successful for scsi%d.\n",
2843 instance->host->host_no);
2844
2845 if (instance->crash_dump_drv_support &&
2846 instance->crash_dump_app_support)
2847 megasas_set_crash_dump_params(instance,
2848 MR_CRASH_BUF_TURN_ON);
2849 else
2850 megasas_set_crash_dump_params(instance,
2851 MR_CRASH_BUF_TURN_OFF);
2852
2853 retval = SUCCESS;
2854 goto out;
2855 }
2856 /* Reset failed, kill the adapter */
2857 printk(KERN_WARNING "megaraid_sas: Reset failed, killing "
2858 "adapter scsi%d.\n", instance->host->host_no);
2859 megaraid_sas_kill_hba(instance);
2860 instance->skip_heartbeat_timer_del = 1;
2861 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2862 retval = FAILED;
2863 } else {
2864 /* For VF: Restart HB timer if we didn't OCR */
2865 if (instance->requestorId) {
2866 megasas_start_timer(instance,
2867 &instance->sriov_heartbeat_timer,
2868 megasas_sriov_heartbeat_handler,
2869 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2870 }
2871 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
2872 instance->instancet->enable_intr(instance);
2873 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
2874 }
2875 out:
2876 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
2877 mutex_unlock(&instance->reset_mutex);
2878 return retval;
2879 }
2880
2881 /* Fusion Crash dump collection work queue */
2882 void megasas_fusion_crash_dump_wq(struct work_struct *work)
2883 {
2884 struct megasas_instance *instance =
2885 container_of(work, struct megasas_instance, crash_init);
2886 u32 status_reg;
2887 u8 partial_copy = 0;
2888
2889
2890 status_reg = instance->instancet->read_fw_status_reg(instance->reg_set);
2891
2892 /*
2893 * Allocate host crash buffers to copy data from 1 MB DMA crash buffer
2894 * to host crash buffers
2895 */
2896 if (instance->drv_buf_index == 0) {
2897 /* Buffer is already allocated for old Crash dump.
2898 * Do OCR and do not wait for crash dump collection
2899 */
2900 if (instance->drv_buf_alloc) {
2901 dev_info(&instance->pdev->dev, "earlier crash dump is "
2902 "not yet copied by application, ignoring this "
2903 "crash dump and initiating OCR\n");
2904 status_reg |= MFI_STATE_CRASH_DUMP_DONE;
2905 writel(status_reg,
2906 &instance->reg_set->outbound_scratch_pad);
2907 readl(&instance->reg_set->outbound_scratch_pad);
2908 return;
2909 }
2910 megasas_alloc_host_crash_buffer(instance);
2911 dev_info(&instance->pdev->dev, "Number of host crash buffers "
2912 "allocated: %d\n", instance->drv_buf_alloc);
2913 }
2914
2915 /*
2916 * Driver has allocated max buffers, which can be allocated
2917 * and FW has more crash dump data, then driver will
2918 * ignore the data.
2919 */
2920 if (instance->drv_buf_index >= (instance->drv_buf_alloc)) {
2921 dev_info(&instance->pdev->dev, "Driver is done copying "
2922 "the buffer: %d\n", instance->drv_buf_alloc);
2923 status_reg |= MFI_STATE_CRASH_DUMP_DONE;
2924 partial_copy = 1;
2925 } else {
2926 memcpy(instance->crash_buf[instance->drv_buf_index],
2927 instance->crash_dump_buf, CRASH_DMA_BUF_SIZE);
2928 instance->drv_buf_index++;
2929 status_reg &= ~MFI_STATE_DMADONE;
2930 }
2931
2932 if (status_reg & MFI_STATE_CRASH_DUMP_DONE) {
2933 dev_info(&instance->pdev->dev, "Crash Dump is available,number "
2934 "of copied buffers: %d\n", instance->drv_buf_index);
2935 instance->fw_crash_buffer_size = instance->drv_buf_index;
2936 instance->fw_crash_state = AVAILABLE;
2937 instance->drv_buf_index = 0;
2938 writel(status_reg, &instance->reg_set->outbound_scratch_pad);
2939 readl(&instance->reg_set->outbound_scratch_pad);
2940 if (!partial_copy)
2941 megasas_reset_fusion(instance->host, 0);
2942 } else {
2943 writel(status_reg, &instance->reg_set->outbound_scratch_pad);
2944 readl(&instance->reg_set->outbound_scratch_pad);
2945 }
2946 }
2947
2948
2949 /* Fusion OCR work queue */
2950 void megasas_fusion_ocr_wq(struct work_struct *work)
2951 {
2952 struct megasas_instance *instance =
2953 container_of(work, struct megasas_instance, work_init);
2954
2955 megasas_reset_fusion(instance->host, 0);
2956 }
2957
2958 struct megasas_instance_template megasas_instance_template_fusion = {
2959 .fire_cmd = megasas_fire_cmd_fusion,
2960 .enable_intr = megasas_enable_intr_fusion,
2961 .disable_intr = megasas_disable_intr_fusion,
2962 .clear_intr = megasas_clear_intr_fusion,
2963 .read_fw_status_reg = megasas_read_fw_status_reg_fusion,
2964 .adp_reset = megasas_adp_reset_fusion,
2965 .check_reset = megasas_check_reset_fusion,
2966 .service_isr = megasas_isr_fusion,
2967 .tasklet = megasas_complete_cmd_dpc_fusion,
2968 .init_adapter = megasas_init_adapter_fusion,
2969 .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion,
2970 .issue_dcmd = megasas_issue_dcmd_fusion,
2971 };
Linux with added FPC-III support