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Merge remote-tracking branch 'asoc/topic/tlv320aic26' into asoc-next
[deliverable/linux.git] / drivers / scsi / megaraid / megaraid_sas_fusion.c
1 /*
2 * Linux MegaRAID driver for SAS based RAID controllers
3 *
4 * Copyright (c) 2009-2012 LSI Corporation.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 *
20 * FILE: megaraid_sas_fusion.c
21 *
22 * Authors: LSI Corporation
23 * Sumant Patro
24 * Adam Radford <linuxraid@lsi.com>
25 *
26 * Send feedback to: <megaraidlinux@lsi.com>
27 *
28 * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035
29 * ATTN: Linuxraid
30 */
31
32 #include <linux/kernel.h>
33 #include <linux/types.h>
34 #include <linux/pci.h>
35 #include <linux/list.h>
36 #include <linux/moduleparam.h>
37 #include <linux/module.h>
38 #include <linux/spinlock.h>
39 #include <linux/interrupt.h>
40 #include <linux/delay.h>
41 #include <linux/uio.h>
42 #include <linux/uaccess.h>
43 #include <linux/fs.h>
44 #include <linux/compat.h>
45 #include <linux/blkdev.h>
46 #include <linux/mutex.h>
47 #include <linux/poll.h>
48
49 #include <scsi/scsi.h>
50 #include <scsi/scsi_cmnd.h>
51 #include <scsi/scsi_device.h>
52 #include <scsi/scsi_host.h>
53
54 #include "megaraid_sas_fusion.h"
55 #include "megaraid_sas.h"
56
57 extern void megasas_free_cmds(struct megasas_instance *instance);
58 extern struct megasas_cmd *megasas_get_cmd(struct megasas_instance
59 *instance);
60 extern void
61 megasas_complete_cmd(struct megasas_instance *instance,
62 struct megasas_cmd *cmd, u8 alt_status);
63 int megasas_is_ldio(struct scsi_cmnd *cmd);
64 int
65 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd);
66
67 void
68 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd);
69 int megasas_alloc_cmds(struct megasas_instance *instance);
70 int
71 megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs);
72 int
73 megasas_issue_polled(struct megasas_instance *instance,
74 struct megasas_cmd *cmd);
75 void
76 megasas_check_and_restore_queue_depth(struct megasas_instance *instance);
77
78 u16 get_updated_dev_handle(struct LD_LOAD_BALANCE_INFO *lbInfo,
79 struct IO_REQUEST_INFO *in_info);
80 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
81 void megaraid_sas_kill_hba(struct megasas_instance *instance);
82
83 extern u32 megasas_dbg_lvl;
84 extern int resetwaittime;
85
86 /**
87 * megasas_enable_intr_fusion - Enables interrupts
88 * @regs: MFI register set
89 */
90 void
91 megasas_enable_intr_fusion(struct megasas_instance *instance)
92 {
93 struct megasas_register_set __iomem *regs;
94 regs = instance->reg_set;
95 /* For Thunderbolt/Invader also clear intr on enable */
96 writel(~0, &regs->outbound_intr_status);
97 readl(&regs->outbound_intr_status);
98
99 writel(~MFI_FUSION_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
100
101 /* Dummy readl to force pci flush */
102 readl(&regs->outbound_intr_mask);
103 instance->mask_interrupts = 0;
104 }
105
106 /**
107 * megasas_disable_intr_fusion - Disables interrupt
108 * @regs: MFI register set
109 */
110 void
111 megasas_disable_intr_fusion(struct megasas_instance *instance)
112 {
113 u32 mask = 0xFFFFFFFF;
114 u32 status;
115 struct megasas_register_set __iomem *regs;
116 regs = instance->reg_set;
117 instance->mask_interrupts = 1;
118
119 writel(mask, &regs->outbound_intr_mask);
120 /* Dummy readl to force pci flush */
121 status = readl(&regs->outbound_intr_mask);
122 }
123
124 int
125 megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs)
126 {
127 u32 status;
128 /*
129 * Check if it is our interrupt
130 */
131 status = readl(&regs->outbound_intr_status);
132
133 if (status & 1) {
134 writel(status, &regs->outbound_intr_status);
135 readl(&regs->outbound_intr_status);
136 return 1;
137 }
138 if (!(status & MFI_FUSION_ENABLE_INTERRUPT_MASK))
139 return 0;
140
141 return 1;
142 }
143
144 /**
145 * megasas_get_cmd_fusion - Get a command from the free pool
146 * @instance: Adapter soft state
147 *
148 * Returns a free command from the pool
149 */
150 struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance
151 *instance)
152 {
153 unsigned long flags;
154 struct fusion_context *fusion =
155 (struct fusion_context *)instance->ctrl_context;
156 struct megasas_cmd_fusion *cmd = NULL;
157
158 spin_lock_irqsave(&fusion->cmd_pool_lock, flags);
159
160 if (!list_empty(&fusion->cmd_pool)) {
161 cmd = list_entry((&fusion->cmd_pool)->next,
162 struct megasas_cmd_fusion, list);
163 list_del_init(&cmd->list);
164 } else {
165 printk(KERN_ERR "megasas: Command pool (fusion) empty!\n");
166 }
167
168 spin_unlock_irqrestore(&fusion->cmd_pool_lock, flags);
169 return cmd;
170 }
171
172 /**
173 * megasas_return_cmd_fusion - Return a cmd to free command pool
174 * @instance: Adapter soft state
175 * @cmd: Command packet to be returned to free command pool
176 */
177 static inline void
178 megasas_return_cmd_fusion(struct megasas_instance *instance,
179 struct megasas_cmd_fusion *cmd)
180 {
181 unsigned long flags;
182 struct fusion_context *fusion =
183 (struct fusion_context *)instance->ctrl_context;
184
185 spin_lock_irqsave(&fusion->cmd_pool_lock, flags);
186
187 cmd->scmd = NULL;
188 cmd->sync_cmd_idx = (u32)ULONG_MAX;
189 list_add_tail(&cmd->list, &fusion->cmd_pool);
190
191 spin_unlock_irqrestore(&fusion->cmd_pool_lock, flags);
192 }
193
194 /**
195 * megasas_teardown_frame_pool_fusion - Destroy the cmd frame DMA pool
196 * @instance: Adapter soft state
197 */
198 static void megasas_teardown_frame_pool_fusion(
199 struct megasas_instance *instance)
200 {
201 int i;
202 struct fusion_context *fusion = instance->ctrl_context;
203
204 u16 max_cmd = instance->max_fw_cmds;
205
206 struct megasas_cmd_fusion *cmd;
207
208 if (!fusion->sg_dma_pool || !fusion->sense_dma_pool) {
209 printk(KERN_ERR "megasas: dma pool is null. SG Pool %p, "
210 "sense pool : %p\n", fusion->sg_dma_pool,
211 fusion->sense_dma_pool);
212 return;
213 }
214
215 /*
216 * Return all frames to pool
217 */
218 for (i = 0; i < max_cmd; i++) {
219
220 cmd = fusion->cmd_list[i];
221
222 if (cmd->sg_frame)
223 pci_pool_free(fusion->sg_dma_pool, cmd->sg_frame,
224 cmd->sg_frame_phys_addr);
225
226 if (cmd->sense)
227 pci_pool_free(fusion->sense_dma_pool, cmd->sense,
228 cmd->sense_phys_addr);
229 }
230
231 /*
232 * Now destroy the pool itself
233 */
234 pci_pool_destroy(fusion->sg_dma_pool);
235 pci_pool_destroy(fusion->sense_dma_pool);
236
237 fusion->sg_dma_pool = NULL;
238 fusion->sense_dma_pool = NULL;
239 }
240
241 /**
242 * megasas_free_cmds_fusion - Free all the cmds in the free cmd pool
243 * @instance: Adapter soft state
244 */
245 void
246 megasas_free_cmds_fusion(struct megasas_instance *instance)
247 {
248 int i;
249 struct fusion_context *fusion = instance->ctrl_context;
250
251 u32 max_cmds, req_sz, reply_sz, io_frames_sz;
252
253
254 req_sz = fusion->request_alloc_sz;
255 reply_sz = fusion->reply_alloc_sz;
256 io_frames_sz = fusion->io_frames_alloc_sz;
257
258 max_cmds = instance->max_fw_cmds;
259
260 /* Free descriptors and request Frames memory */
261 if (fusion->req_frames_desc)
262 dma_free_coherent(&instance->pdev->dev, req_sz,
263 fusion->req_frames_desc,
264 fusion->req_frames_desc_phys);
265
266 if (fusion->reply_frames_desc) {
267 pci_pool_free(fusion->reply_frames_desc_pool,
268 fusion->reply_frames_desc,
269 fusion->reply_frames_desc_phys);
270 pci_pool_destroy(fusion->reply_frames_desc_pool);
271 }
272
273 if (fusion->io_request_frames) {
274 pci_pool_free(fusion->io_request_frames_pool,
275 fusion->io_request_frames,
276 fusion->io_request_frames_phys);
277 pci_pool_destroy(fusion->io_request_frames_pool);
278 }
279
280 /* Free the Fusion frame pool */
281 megasas_teardown_frame_pool_fusion(instance);
282
283 /* Free all the commands in the cmd_list */
284 for (i = 0; i < max_cmds; i++)
285 kfree(fusion->cmd_list[i]);
286
287 /* Free the cmd_list buffer itself */
288 kfree(fusion->cmd_list);
289 fusion->cmd_list = NULL;
290
291 INIT_LIST_HEAD(&fusion->cmd_pool);
292 }
293
294 /**
295 * megasas_create_frame_pool_fusion - Creates DMA pool for cmd frames
296 * @instance: Adapter soft state
297 *
298 */
299 static int megasas_create_frame_pool_fusion(struct megasas_instance *instance)
300 {
301 int i;
302 u32 max_cmd;
303 struct fusion_context *fusion;
304 struct megasas_cmd_fusion *cmd;
305 u32 total_sz_chain_frame;
306
307 fusion = instance->ctrl_context;
308 max_cmd = instance->max_fw_cmds;
309
310 total_sz_chain_frame = MEGASAS_MAX_SZ_CHAIN_FRAME;
311
312 /*
313 * Use DMA pool facility provided by PCI layer
314 */
315
316 fusion->sg_dma_pool = pci_pool_create("megasas sg pool fusion",
317 instance->pdev,
318 total_sz_chain_frame, 4,
319 0);
320 if (!fusion->sg_dma_pool) {
321 printk(KERN_DEBUG "megasas: failed to setup request pool "
322 "fusion\n");
323 return -ENOMEM;
324 }
325 fusion->sense_dma_pool = pci_pool_create("megasas sense pool fusion",
326 instance->pdev,
327 SCSI_SENSE_BUFFERSIZE, 64, 0);
328
329 if (!fusion->sense_dma_pool) {
330 printk(KERN_DEBUG "megasas: failed to setup sense pool "
331 "fusion\n");
332 pci_pool_destroy(fusion->sg_dma_pool);
333 fusion->sg_dma_pool = NULL;
334 return -ENOMEM;
335 }
336
337 /*
338 * Allocate and attach a frame to each of the commands in cmd_list
339 */
340 for (i = 0; i < max_cmd; i++) {
341
342 cmd = fusion->cmd_list[i];
343
344 cmd->sg_frame = pci_pool_alloc(fusion->sg_dma_pool,
345 GFP_KERNEL,
346 &cmd->sg_frame_phys_addr);
347
348 cmd->sense = pci_pool_alloc(fusion->sense_dma_pool,
349 GFP_KERNEL, &cmd->sense_phys_addr);
350 /*
351 * megasas_teardown_frame_pool_fusion() takes care of freeing
352 * whatever has been allocated
353 */
354 if (!cmd->sg_frame || !cmd->sense) {
355 printk(KERN_DEBUG "megasas: pci_pool_alloc failed\n");
356 megasas_teardown_frame_pool_fusion(instance);
357 return -ENOMEM;
358 }
359 }
360 return 0;
361 }
362
363 /**
364 * megasas_alloc_cmds_fusion - Allocates the command packets
365 * @instance: Adapter soft state
366 *
367 *
368 * Each frame has a 32-bit field called context. This context is used to get
369 * back the megasas_cmd_fusion from the frame when a frame gets completed
370 * In this driver, the 32 bit values are the indices into an array cmd_list.
371 * This array is used only to look up the megasas_cmd_fusion given the context.
372 * The free commands themselves are maintained in a linked list called cmd_pool.
373 *
374 * cmds are formed in the io_request and sg_frame members of the
375 * megasas_cmd_fusion. The context field is used to get a request descriptor
376 * and is used as SMID of the cmd.
377 * SMID value range is from 1 to max_fw_cmds.
378 */
379 int
380 megasas_alloc_cmds_fusion(struct megasas_instance *instance)
381 {
382 int i, j, count;
383 u32 max_cmd, io_frames_sz;
384 struct fusion_context *fusion;
385 struct megasas_cmd_fusion *cmd;
386 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
387 u32 offset;
388 dma_addr_t io_req_base_phys;
389 u8 *io_req_base;
390
391 fusion = instance->ctrl_context;
392
393 max_cmd = instance->max_fw_cmds;
394
395 fusion->req_frames_desc =
396 dma_alloc_coherent(&instance->pdev->dev,
397 fusion->request_alloc_sz,
398 &fusion->req_frames_desc_phys, GFP_KERNEL);
399
400 if (!fusion->req_frames_desc) {
401 printk(KERN_ERR "megasas; Could not allocate memory for "
402 "request_frames\n");
403 goto fail_req_desc;
404 }
405
406 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
407 fusion->reply_frames_desc_pool =
408 pci_pool_create("reply_frames pool", instance->pdev,
409 fusion->reply_alloc_sz * count, 16, 0);
410
411 if (!fusion->reply_frames_desc_pool) {
412 printk(KERN_ERR "megasas; Could not allocate memory for "
413 "reply_frame pool\n");
414 goto fail_reply_desc;
415 }
416
417 fusion->reply_frames_desc =
418 pci_pool_alloc(fusion->reply_frames_desc_pool, GFP_KERNEL,
419 &fusion->reply_frames_desc_phys);
420 if (!fusion->reply_frames_desc) {
421 printk(KERN_ERR "megasas; Could not allocate memory for "
422 "reply_frame pool\n");
423 pci_pool_destroy(fusion->reply_frames_desc_pool);
424 goto fail_reply_desc;
425 }
426
427 reply_desc = fusion->reply_frames_desc;
428 for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++)
429 reply_desc->Words = ULLONG_MAX;
430
431 io_frames_sz = fusion->io_frames_alloc_sz;
432
433 fusion->io_request_frames_pool =
434 pci_pool_create("io_request_frames pool", instance->pdev,
435 fusion->io_frames_alloc_sz, 16, 0);
436
437 if (!fusion->io_request_frames_pool) {
438 printk(KERN_ERR "megasas: Could not allocate memory for "
439 "io_request_frame pool\n");
440 goto fail_io_frames;
441 }
442
443 fusion->io_request_frames =
444 pci_pool_alloc(fusion->io_request_frames_pool, GFP_KERNEL,
445 &fusion->io_request_frames_phys);
446 if (!fusion->io_request_frames) {
447 printk(KERN_ERR "megasas: Could not allocate memory for "
448 "io_request_frames frames\n");
449 pci_pool_destroy(fusion->io_request_frames_pool);
450 goto fail_io_frames;
451 }
452
453 /*
454 * fusion->cmd_list is an array of struct megasas_cmd_fusion pointers.
455 * Allocate the dynamic array first and then allocate individual
456 * commands.
457 */
458 fusion->cmd_list = kzalloc(sizeof(struct megasas_cmd_fusion *)
459 * max_cmd, GFP_KERNEL);
460
461 if (!fusion->cmd_list) {
462 printk(KERN_DEBUG "megasas: out of memory. Could not alloc "
463 "memory for cmd_list_fusion\n");
464 goto fail_cmd_list;
465 }
466
467 max_cmd = instance->max_fw_cmds;
468 for (i = 0; i < max_cmd; i++) {
469 fusion->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd_fusion),
470 GFP_KERNEL);
471 if (!fusion->cmd_list[i]) {
472 printk(KERN_ERR "Could not alloc cmd list fusion\n");
473
474 for (j = 0; j < i; j++)
475 kfree(fusion->cmd_list[j]);
476
477 kfree(fusion->cmd_list);
478 fusion->cmd_list = NULL;
479 goto fail_cmd_list;
480 }
481 }
482
483 /* The first 256 bytes (SMID 0) is not used. Don't add to cmd list */
484 io_req_base = fusion->io_request_frames +
485 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
486 io_req_base_phys = fusion->io_request_frames_phys +
487 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
488
489 /*
490 * Add all the commands to command pool (fusion->cmd_pool)
491 */
492
493 /* SMID 0 is reserved. Set SMID/index from 1 */
494 for (i = 0; i < max_cmd; i++) {
495 cmd = fusion->cmd_list[i];
496 offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i;
497 memset(cmd, 0, sizeof(struct megasas_cmd_fusion));
498 cmd->index = i + 1;
499 cmd->scmd = NULL;
500 cmd->sync_cmd_idx = (u32)ULONG_MAX; /* Set to Invalid */
501 cmd->instance = instance;
502 cmd->io_request =
503 (struct MPI2_RAID_SCSI_IO_REQUEST *)
504 (io_req_base + offset);
505 memset(cmd->io_request, 0,
506 sizeof(struct MPI2_RAID_SCSI_IO_REQUEST));
507 cmd->io_request_phys_addr = io_req_base_phys + offset;
508
509 list_add_tail(&cmd->list, &fusion->cmd_pool);
510 }
511
512 /*
513 * Create a frame pool and assign one frame to each cmd
514 */
515 if (megasas_create_frame_pool_fusion(instance)) {
516 printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n");
517 megasas_free_cmds_fusion(instance);
518 goto fail_req_desc;
519 }
520
521 return 0;
522
523 fail_cmd_list:
524 pci_pool_free(fusion->io_request_frames_pool, fusion->io_request_frames,
525 fusion->io_request_frames_phys);
526 pci_pool_destroy(fusion->io_request_frames_pool);
527 fail_io_frames:
528 dma_free_coherent(&instance->pdev->dev, fusion->request_alloc_sz,
529 fusion->reply_frames_desc,
530 fusion->reply_frames_desc_phys);
531 pci_pool_free(fusion->reply_frames_desc_pool,
532 fusion->reply_frames_desc,
533 fusion->reply_frames_desc_phys);
534 pci_pool_destroy(fusion->reply_frames_desc_pool);
535
536 fail_reply_desc:
537 dma_free_coherent(&instance->pdev->dev, fusion->request_alloc_sz,
538 fusion->req_frames_desc,
539 fusion->req_frames_desc_phys);
540 fail_req_desc:
541 return -ENOMEM;
542 }
543
544 /**
545 * wait_and_poll - Issues a polling command
546 * @instance: Adapter soft state
547 * @cmd: Command packet to be issued
548 *
549 * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
550 */
551 int
552 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd)
553 {
554 int i;
555 struct megasas_header *frame_hdr = &cmd->frame->hdr;
556
557 u32 msecs = MFI_POLL_TIMEOUT_SECS * 1000;
558
559 /*
560 * Wait for cmd_status to change
561 */
562 for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) {
563 rmb();
564 msleep(20);
565 }
566
567 if (frame_hdr->cmd_status == 0xff)
568 return -ETIME;
569
570 return 0;
571 }
572
573 /**
574 * megasas_ioc_init_fusion - Initializes the FW
575 * @instance: Adapter soft state
576 *
577 * Issues the IOC Init cmd
578 */
579 int
580 megasas_ioc_init_fusion(struct megasas_instance *instance)
581 {
582 struct megasas_init_frame *init_frame;
583 struct MPI2_IOC_INIT_REQUEST *IOCInitMessage;
584 dma_addr_t ioc_init_handle;
585 struct megasas_cmd *cmd;
586 u8 ret;
587 struct fusion_context *fusion;
588 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
589 int i;
590 struct megasas_header *frame_hdr;
591
592 fusion = instance->ctrl_context;
593
594 cmd = megasas_get_cmd(instance);
595
596 if (!cmd) {
597 printk(KERN_ERR "Could not allocate cmd for INIT Frame\n");
598 ret = 1;
599 goto fail_get_cmd;
600 }
601
602 IOCInitMessage =
603 dma_alloc_coherent(&instance->pdev->dev,
604 sizeof(struct MPI2_IOC_INIT_REQUEST),
605 &ioc_init_handle, GFP_KERNEL);
606
607 if (!IOCInitMessage) {
608 printk(KERN_ERR "Could not allocate memory for "
609 "IOCInitMessage\n");
610 ret = 1;
611 goto fail_fw_init;
612 }
613
614 memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST));
615
616 IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT;
617 IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER;
618 IOCInitMessage->MsgVersion = cpu_to_le16(MPI2_VERSION);
619 IOCInitMessage->HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION);
620 IOCInitMessage->SystemRequestFrameSize = cpu_to_le16(MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4);
621
622 IOCInitMessage->ReplyDescriptorPostQueueDepth = cpu_to_le16(fusion->reply_q_depth);
623 IOCInitMessage->ReplyDescriptorPostQueueAddress = cpu_to_le64(fusion->reply_frames_desc_phys);
624 IOCInitMessage->SystemRequestFrameBaseAddress = cpu_to_le64(fusion->io_request_frames_phys);
625 IOCInitMessage->HostMSIxVectors = instance->msix_vectors;
626 init_frame = (struct megasas_init_frame *)cmd->frame;
627 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
628
629 frame_hdr = &cmd->frame->hdr;
630 frame_hdr->cmd_status = 0xFF;
631 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
632
633 init_frame->cmd = MFI_CMD_INIT;
634 init_frame->cmd_status = 0xFF;
635
636 /* driver support Extended MSIX */
637 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
638 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
639 init_frame->driver_operations.
640 mfi_capabilities.support_additional_msix = 1;
641 /* driver supports HA / Remote LUN over Fast Path interface */
642 init_frame->driver_operations.mfi_capabilities.support_fp_remote_lun
643 = 1;
644 /* Convert capability to LE32 */
645 cpu_to_le32s((u32 *)&init_frame->driver_operations.mfi_capabilities);
646
647 init_frame->queue_info_new_phys_addr_lo = cpu_to_le32((u32)ioc_init_handle);
648 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct MPI2_IOC_INIT_REQUEST));
649
650 req_desc =
651 (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)fusion->req_frames_desc;
652
653 req_desc->Words = 0;
654 req_desc->MFAIo.RequestFlags =
655 (MEGASAS_REQ_DESCRIPT_FLAGS_MFA <<
656 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
657 cpu_to_le32s((u32 *)&req_desc->MFAIo);
658 req_desc->Words |= cpu_to_le64(cmd->frame_phys_addr);
659
660 /*
661 * disable the intr before firing the init frame
662 */
663 instance->instancet->disable_intr(instance);
664
665 for (i = 0; i < (10 * 1000); i += 20) {
666 if (readl(&instance->reg_set->doorbell) & 1)
667 msleep(20);
668 else
669 break;
670 }
671
672 instance->instancet->fire_cmd(instance, req_desc->u.low,
673 req_desc->u.high, instance->reg_set);
674
675 wait_and_poll(instance, cmd);
676
677 frame_hdr = &cmd->frame->hdr;
678 if (frame_hdr->cmd_status != 0) {
679 ret = 1;
680 goto fail_fw_init;
681 }
682 printk(KERN_ERR "megasas:IOC Init cmd success\n");
683
684 ret = 0;
685
686 fail_fw_init:
687 megasas_return_cmd(instance, cmd);
688 if (IOCInitMessage)
689 dma_free_coherent(&instance->pdev->dev,
690 sizeof(struct MPI2_IOC_INIT_REQUEST),
691 IOCInitMessage, ioc_init_handle);
692 fail_get_cmd:
693 return ret;
694 }
695
696 /*
697 * megasas_get_ld_map_info - Returns FW's ld_map structure
698 * @instance: Adapter soft state
699 * @pend: Pend the command or not
700 * Issues an internal command (DCMD) to get the FW's controller PD
701 * list structure. This information is mainly used to find out SYSTEM
702 * supported by the FW.
703 */
704 static int
705 megasas_get_ld_map_info(struct megasas_instance *instance)
706 {
707 int ret = 0;
708 struct megasas_cmd *cmd;
709 struct megasas_dcmd_frame *dcmd;
710 struct MR_FW_RAID_MAP_ALL *ci;
711 dma_addr_t ci_h = 0;
712 u32 size_map_info;
713 struct fusion_context *fusion;
714
715 cmd = megasas_get_cmd(instance);
716
717 if (!cmd) {
718 printk(KERN_DEBUG "megasas: Failed to get cmd for map info.\n");
719 return -ENOMEM;
720 }
721
722 fusion = instance->ctrl_context;
723
724 if (!fusion) {
725 megasas_return_cmd(instance, cmd);
726 return 1;
727 }
728
729 dcmd = &cmd->frame->dcmd;
730
731 size_map_info = sizeof(struct MR_FW_RAID_MAP) +
732 (sizeof(struct MR_LD_SPAN_MAP) *(MAX_LOGICAL_DRIVES - 1));
733
734 ci = fusion->ld_map[(instance->map_id & 1)];
735 ci_h = fusion->ld_map_phys[(instance->map_id & 1)];
736
737 if (!ci) {
738 printk(KERN_DEBUG "Failed to alloc mem for ld_map_info\n");
739 megasas_return_cmd(instance, cmd);
740 return -ENOMEM;
741 }
742
743 memset(ci, 0, sizeof(*ci));
744 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
745
746 dcmd->cmd = MFI_CMD_DCMD;
747 dcmd->cmd_status = 0xFF;
748 dcmd->sge_count = 1;
749 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
750 dcmd->timeout = 0;
751 dcmd->pad_0 = 0;
752 dcmd->data_xfer_len = cpu_to_le32(size_map_info);
753 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
754 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
755 dcmd->sgl.sge32[0].length = cpu_to_le32(size_map_info);
756
757 if (!megasas_issue_polled(instance, cmd))
758 ret = 0;
759 else {
760 printk(KERN_ERR "megasas: Get LD Map Info Failed\n");
761 ret = -1;
762 }
763
764 megasas_return_cmd(instance, cmd);
765
766 return ret;
767 }
768
769 u8
770 megasas_get_map_info(struct megasas_instance *instance)
771 {
772 struct fusion_context *fusion = instance->ctrl_context;
773
774 fusion->fast_path_io = 0;
775 if (!megasas_get_ld_map_info(instance)) {
776 if (MR_ValidateMapInfo(instance)) {
777 fusion->fast_path_io = 1;
778 return 0;
779 }
780 }
781 return 1;
782 }
783
784 /*
785 * megasas_sync_map_info - Returns FW's ld_map structure
786 * @instance: Adapter soft state
787 *
788 * Issues an internal command (DCMD) to get the FW's controller PD
789 * list structure. This information is mainly used to find out SYSTEM
790 * supported by the FW.
791 */
792 int
793 megasas_sync_map_info(struct megasas_instance *instance)
794 {
795 int ret = 0, i;
796 struct megasas_cmd *cmd;
797 struct megasas_dcmd_frame *dcmd;
798 u32 size_sync_info, num_lds;
799 struct fusion_context *fusion;
800 struct MR_LD_TARGET_SYNC *ci = NULL;
801 struct MR_FW_RAID_MAP_ALL *map;
802 struct MR_LD_RAID *raid;
803 struct MR_LD_TARGET_SYNC *ld_sync;
804 dma_addr_t ci_h = 0;
805 u32 size_map_info;
806
807 cmd = megasas_get_cmd(instance);
808
809 if (!cmd) {
810 printk(KERN_DEBUG "megasas: Failed to get cmd for sync"
811 "info.\n");
812 return -ENOMEM;
813 }
814
815 fusion = instance->ctrl_context;
816
817 if (!fusion) {
818 megasas_return_cmd(instance, cmd);
819 return 1;
820 }
821
822 map = fusion->ld_map[instance->map_id & 1];
823
824 num_lds = le32_to_cpu(map->raidMap.ldCount);
825
826 dcmd = &cmd->frame->dcmd;
827
828 size_sync_info = sizeof(struct MR_LD_TARGET_SYNC) *num_lds;
829
830 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
831
832 ci = (struct MR_LD_TARGET_SYNC *)
833 fusion->ld_map[(instance->map_id - 1) & 1];
834 memset(ci, 0, sizeof(struct MR_FW_RAID_MAP_ALL));
835
836 ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1];
837
838 ld_sync = (struct MR_LD_TARGET_SYNC *)ci;
839
840 for (i = 0; i < num_lds; i++, ld_sync++) {
841 raid = MR_LdRaidGet(i, map);
842 ld_sync->targetId = MR_GetLDTgtId(i, map);
843 ld_sync->seqNum = raid->seqNum;
844 }
845
846 size_map_info = sizeof(struct MR_FW_RAID_MAP) +
847 (sizeof(struct MR_LD_SPAN_MAP) *(MAX_LOGICAL_DRIVES - 1));
848
849 dcmd->cmd = MFI_CMD_DCMD;
850 dcmd->cmd_status = 0xFF;
851 dcmd->sge_count = 1;
852 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_WRITE);
853 dcmd->timeout = 0;
854 dcmd->pad_0 = 0;
855 dcmd->data_xfer_len = cpu_to_le32(size_map_info);
856 dcmd->mbox.b[0] = num_lds;
857 dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG;
858 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
859 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
860 dcmd->sgl.sge32[0].length = cpu_to_le32(size_map_info);
861
862 instance->map_update_cmd = cmd;
863
864 instance->instancet->issue_dcmd(instance, cmd);
865
866 return ret;
867 }
868
869 /*
870 * meagasas_display_intel_branding - Display branding string
871 * @instance: per adapter object
872 *
873 * Return nothing.
874 */
875 static void
876 megasas_display_intel_branding(struct megasas_instance *instance)
877 {
878 if (instance->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL)
879 return;
880
881 switch (instance->pdev->device) {
882 case PCI_DEVICE_ID_LSI_INVADER:
883 switch (instance->pdev->subsystem_device) {
884 case MEGARAID_INTEL_RS3DC080_SSDID:
885 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
886 instance->host->host_no,
887 MEGARAID_INTEL_RS3DC080_BRANDING);
888 break;
889 case MEGARAID_INTEL_RS3DC040_SSDID:
890 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
891 instance->host->host_no,
892 MEGARAID_INTEL_RS3DC040_BRANDING);
893 break;
894 case MEGARAID_INTEL_RS3SC008_SSDID:
895 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
896 instance->host->host_no,
897 MEGARAID_INTEL_RS3SC008_BRANDING);
898 break;
899 case MEGARAID_INTEL_RS3MC044_SSDID:
900 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
901 instance->host->host_no,
902 MEGARAID_INTEL_RS3MC044_BRANDING);
903 break;
904 default:
905 break;
906 }
907 break;
908 case PCI_DEVICE_ID_LSI_FURY:
909 switch (instance->pdev->subsystem_device) {
910 case MEGARAID_INTEL_RS3WC080_SSDID:
911 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
912 instance->host->host_no,
913 MEGARAID_INTEL_RS3WC080_BRANDING);
914 break;
915 case MEGARAID_INTEL_RS3WC040_SSDID:
916 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
917 instance->host->host_no,
918 MEGARAID_INTEL_RS3WC040_BRANDING);
919 break;
920 default:
921 break;
922 }
923 break;
924 default:
925 break;
926 }
927 }
928
929 /**
930 * megasas_init_adapter_fusion - Initializes the FW
931 * @instance: Adapter soft state
932 *
933 * This is the main function for initializing firmware.
934 */
935 u32
936 megasas_init_adapter_fusion(struct megasas_instance *instance)
937 {
938 struct megasas_register_set __iomem *reg_set;
939 struct fusion_context *fusion;
940 u32 max_cmd;
941 int i = 0, count;
942
943 fusion = instance->ctrl_context;
944
945 reg_set = instance->reg_set;
946
947 /*
948 * Get various operational parameters from status register
949 */
950 instance->max_fw_cmds =
951 instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
952 instance->max_fw_cmds = min(instance->max_fw_cmds, (u16)1008);
953
954 /*
955 * Reduce the max supported cmds by 1. This is to ensure that the
956 * reply_q_sz (1 more than the max cmd that driver may send)
957 * does not exceed max cmds that the FW can support
958 */
959 instance->max_fw_cmds = instance->max_fw_cmds-1;
960 /* Only internal cmds (DCMD) need to have MFI frames */
961 instance->max_mfi_cmds = MEGASAS_INT_CMDS;
962
963 max_cmd = instance->max_fw_cmds;
964
965 fusion->reply_q_depth = ((max_cmd + 1 + 15)/16)*16;
966
967 fusion->request_alloc_sz =
968 sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *max_cmd;
969 fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION)
970 *(fusion->reply_q_depth);
971 fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE +
972 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE *
973 (max_cmd + 1)); /* Extra 1 for SMID 0 */
974
975 fusion->max_sge_in_main_msg =
976 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
977 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16;
978
979 fusion->max_sge_in_chain =
980 MEGASAS_MAX_SZ_CHAIN_FRAME / sizeof(union MPI2_SGE_IO_UNION);
981
982 instance->max_num_sge = fusion->max_sge_in_main_msg +
983 fusion->max_sge_in_chain - 2;
984
985 /* Used for pass thru MFI frame (DCMD) */
986 fusion->chain_offset_mfi_pthru =
987 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16;
988
989 fusion->chain_offset_io_request =
990 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
991 sizeof(union MPI2_SGE_IO_UNION))/16;
992
993 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
994 for (i = 0 ; i < count; i++)
995 fusion->last_reply_idx[i] = 0;
996
997 /*
998 * Allocate memory for descriptors
999 * Create a pool of commands
1000 */
1001 if (megasas_alloc_cmds(instance))
1002 goto fail_alloc_mfi_cmds;
1003 if (megasas_alloc_cmds_fusion(instance))
1004 goto fail_alloc_cmds;
1005
1006 if (megasas_ioc_init_fusion(instance))
1007 goto fail_ioc_init;
1008
1009 megasas_display_intel_branding(instance);
1010
1011 instance->flag_ieee = 1;
1012
1013 fusion->map_sz = sizeof(struct MR_FW_RAID_MAP) +
1014 (sizeof(struct MR_LD_SPAN_MAP) *(MAX_LOGICAL_DRIVES - 1));
1015
1016 fusion->fast_path_io = 0;
1017
1018 for (i = 0; i < 2; i++) {
1019 fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev,
1020 fusion->map_sz,
1021 &fusion->ld_map_phys[i],
1022 GFP_KERNEL);
1023 if (!fusion->ld_map[i]) {
1024 printk(KERN_ERR "megasas: Could not allocate memory "
1025 "for map info\n");
1026 goto fail_map_info;
1027 }
1028 }
1029
1030 if (!megasas_get_map_info(instance))
1031 megasas_sync_map_info(instance);
1032
1033 return 0;
1034
1035 fail_map_info:
1036 if (i == 1)
1037 dma_free_coherent(&instance->pdev->dev, fusion->map_sz,
1038 fusion->ld_map[0], fusion->ld_map_phys[0]);
1039 fail_ioc_init:
1040 megasas_free_cmds_fusion(instance);
1041 fail_alloc_cmds:
1042 megasas_free_cmds(instance);
1043 fail_alloc_mfi_cmds:
1044 return 1;
1045 }
1046
1047 /**
1048 * megasas_fire_cmd_fusion - Sends command to the FW
1049 * @frame_phys_addr : Physical address of cmd
1050 * @frame_count : Number of frames for the command
1051 * @regs : MFI register set
1052 */
1053 void
1054 megasas_fire_cmd_fusion(struct megasas_instance *instance,
1055 dma_addr_t req_desc_lo,
1056 u32 req_desc_hi,
1057 struct megasas_register_set __iomem *regs)
1058 {
1059 unsigned long flags;
1060
1061 spin_lock_irqsave(&instance->hba_lock, flags);
1062
1063 writel(le32_to_cpu(req_desc_lo), &(regs)->inbound_low_queue_port);
1064 writel(le32_to_cpu(req_desc_hi), &(regs)->inbound_high_queue_port);
1065 spin_unlock_irqrestore(&instance->hba_lock, flags);
1066 }
1067
1068 /**
1069 * map_cmd_status - Maps FW cmd status to OS cmd status
1070 * @cmd : Pointer to cmd
1071 * @status : status of cmd returned by FW
1072 * @ext_status : ext status of cmd returned by FW
1073 */
1074
1075 void
1076 map_cmd_status(struct megasas_cmd_fusion *cmd, u8 status, u8 ext_status)
1077 {
1078
1079 switch (status) {
1080
1081 case MFI_STAT_OK:
1082 cmd->scmd->result = DID_OK << 16;
1083 break;
1084
1085 case MFI_STAT_SCSI_IO_FAILED:
1086 case MFI_STAT_LD_INIT_IN_PROGRESS:
1087 cmd->scmd->result = (DID_ERROR << 16) | ext_status;
1088 break;
1089
1090 case MFI_STAT_SCSI_DONE_WITH_ERROR:
1091
1092 cmd->scmd->result = (DID_OK << 16) | ext_status;
1093 if (ext_status == SAM_STAT_CHECK_CONDITION) {
1094 memset(cmd->scmd->sense_buffer, 0,
1095 SCSI_SENSE_BUFFERSIZE);
1096 memcpy(cmd->scmd->sense_buffer, cmd->sense,
1097 SCSI_SENSE_BUFFERSIZE);
1098 cmd->scmd->result |= DRIVER_SENSE << 24;
1099 }
1100 break;
1101
1102 case MFI_STAT_LD_OFFLINE:
1103 case MFI_STAT_DEVICE_NOT_FOUND:
1104 cmd->scmd->result = DID_BAD_TARGET << 16;
1105 break;
1106 case MFI_STAT_CONFIG_SEQ_MISMATCH:
1107 cmd->scmd->result = DID_IMM_RETRY << 16;
1108 break;
1109 default:
1110 printk(KERN_DEBUG "megasas: FW status %#x\n", status);
1111 cmd->scmd->result = DID_ERROR << 16;
1112 break;
1113 }
1114 }
1115
1116 /**
1117 * megasas_make_sgl_fusion - Prepares 32-bit SGL
1118 * @instance: Adapter soft state
1119 * @scp: SCSI command from the mid-layer
1120 * @sgl_ptr: SGL to be filled in
1121 * @cmd: cmd we are working on
1122 *
1123 * If successful, this function returns the number of SG elements.
1124 */
1125 static int
1126 megasas_make_sgl_fusion(struct megasas_instance *instance,
1127 struct scsi_cmnd *scp,
1128 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
1129 struct megasas_cmd_fusion *cmd)
1130 {
1131 int i, sg_processed, sge_count;
1132 struct scatterlist *os_sgl;
1133 struct fusion_context *fusion;
1134
1135 fusion = instance->ctrl_context;
1136
1137 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
1138 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
1139 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr;
1140 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
1141 sgl_ptr_end->Flags = 0;
1142 }
1143
1144 sge_count = scsi_dma_map(scp);
1145
1146 BUG_ON(sge_count < 0);
1147
1148 if (sge_count > instance->max_num_sge || !sge_count)
1149 return sge_count;
1150
1151 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1152 sgl_ptr->Length = cpu_to_le32(sg_dma_len(os_sgl));
1153 sgl_ptr->Address = cpu_to_le64(sg_dma_address(os_sgl));
1154 sgl_ptr->Flags = 0;
1155 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
1156 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
1157 if (i == sge_count - 1)
1158 sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST;
1159 }
1160 sgl_ptr++;
1161
1162 sg_processed = i + 1;
1163
1164 if ((sg_processed == (fusion->max_sge_in_main_msg - 1)) &&
1165 (sge_count > fusion->max_sge_in_main_msg)) {
1166
1167 struct MPI25_IEEE_SGE_CHAIN64 *sg_chain;
1168 if ((instance->pdev->device ==
1169 PCI_DEVICE_ID_LSI_INVADER) ||
1170 (instance->pdev->device ==
1171 PCI_DEVICE_ID_LSI_FURY)) {
1172 if ((le16_to_cpu(cmd->io_request->IoFlags) &
1173 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) !=
1174 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH)
1175 cmd->io_request->ChainOffset =
1176 fusion->
1177 chain_offset_io_request;
1178 else
1179 cmd->io_request->ChainOffset = 0;
1180 } else
1181 cmd->io_request->ChainOffset =
1182 fusion->chain_offset_io_request;
1183
1184 sg_chain = sgl_ptr;
1185 /* Prepare chain element */
1186 sg_chain->NextChainOffset = 0;
1187 if ((instance->pdev->device ==
1188 PCI_DEVICE_ID_LSI_INVADER) ||
1189 (instance->pdev->device ==
1190 PCI_DEVICE_ID_LSI_FURY))
1191 sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT;
1192 else
1193 sg_chain->Flags =
1194 (IEEE_SGE_FLAGS_CHAIN_ELEMENT |
1195 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR);
1196 sg_chain->Length = cpu_to_le32((sizeof(union MPI2_SGE_IO_UNION) * (sge_count - sg_processed)));
1197 sg_chain->Address = cpu_to_le64(cmd->sg_frame_phys_addr);
1198
1199 sgl_ptr =
1200 (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame;
1201 }
1202 }
1203
1204 return sge_count;
1205 }
1206
1207 /**
1208 * megasas_set_pd_lba - Sets PD LBA
1209 * @cdb: CDB
1210 * @cdb_len: cdb length
1211 * @start_blk: Start block of IO
1212 *
1213 * Used to set the PD LBA in CDB for FP IOs
1214 */
1215 void
1216 megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len,
1217 struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp,
1218 struct MR_FW_RAID_MAP_ALL *local_map_ptr, u32 ref_tag)
1219 {
1220 struct MR_LD_RAID *raid;
1221 u32 ld;
1222 u64 start_blk = io_info->pdBlock;
1223 u8 *cdb = io_request->CDB.CDB32;
1224 u32 num_blocks = io_info->numBlocks;
1225 u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0;
1226
1227 /* Check if T10 PI (DIF) is enabled for this LD */
1228 ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr);
1229 raid = MR_LdRaidGet(ld, local_map_ptr);
1230 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) {
1231 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
1232 cdb[0] = MEGASAS_SCSI_VARIABLE_LENGTH_CMD;
1233 cdb[7] = MEGASAS_SCSI_ADDL_CDB_LEN;
1234
1235 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1236 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32;
1237 else
1238 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32;
1239 cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL;
1240
1241 /* LBA */
1242 cdb[12] = (u8)((start_blk >> 56) & 0xff);
1243 cdb[13] = (u8)((start_blk >> 48) & 0xff);
1244 cdb[14] = (u8)((start_blk >> 40) & 0xff);
1245 cdb[15] = (u8)((start_blk >> 32) & 0xff);
1246 cdb[16] = (u8)((start_blk >> 24) & 0xff);
1247 cdb[17] = (u8)((start_blk >> 16) & 0xff);
1248 cdb[18] = (u8)((start_blk >> 8) & 0xff);
1249 cdb[19] = (u8)(start_blk & 0xff);
1250
1251 /* Logical block reference tag */
1252 io_request->CDB.EEDP32.PrimaryReferenceTag =
1253 cpu_to_be32(ref_tag);
1254 io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0xffff;
1255 io_request->IoFlags = cpu_to_le16(32); /* Specify 32-byte cdb */
1256
1257 /* Transfer length */
1258 cdb[28] = (u8)((num_blocks >> 24) & 0xff);
1259 cdb[29] = (u8)((num_blocks >> 16) & 0xff);
1260 cdb[30] = (u8)((num_blocks >> 8) & 0xff);
1261 cdb[31] = (u8)(num_blocks & 0xff);
1262
1263 /* set SCSI IO EEDPFlags */
1264 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) {
1265 io_request->EEDPFlags = cpu_to_le16(
1266 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
1267 MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
1268 MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP |
1269 MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG |
1270 MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD);
1271 } else {
1272 io_request->EEDPFlags = cpu_to_le16(
1273 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
1274 MPI2_SCSIIO_EEDPFLAGS_INSERT_OP);
1275 }
1276 io_request->Control |= cpu_to_le32((0x4 << 26));
1277 io_request->EEDPBlockSize = cpu_to_le32(scp->device->sector_size);
1278 } else {
1279 /* Some drives don't support 16/12 byte CDB's, convert to 10 */
1280 if (((cdb_len == 12) || (cdb_len == 16)) &&
1281 (start_blk <= 0xffffffff)) {
1282 if (cdb_len == 16) {
1283 opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10;
1284 flagvals = cdb[1];
1285 groupnum = cdb[14];
1286 control = cdb[15];
1287 } else {
1288 opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10;
1289 flagvals = cdb[1];
1290 groupnum = cdb[10];
1291 control = cdb[11];
1292 }
1293
1294 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
1295
1296 cdb[0] = opcode;
1297 cdb[1] = flagvals;
1298 cdb[6] = groupnum;
1299 cdb[9] = control;
1300
1301 /* Transfer length */
1302 cdb[8] = (u8)(num_blocks & 0xff);
1303 cdb[7] = (u8)((num_blocks >> 8) & 0xff);
1304
1305 io_request->IoFlags = cpu_to_le16(10); /* Specify 10-byte cdb */
1306 cdb_len = 10;
1307 } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) {
1308 /* Convert to 16 byte CDB for large LBA's */
1309 switch (cdb_len) {
1310 case 6:
1311 opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16;
1312 control = cdb[5];
1313 break;
1314 case 10:
1315 opcode =
1316 cdb[0] == READ_10 ? READ_16 : WRITE_16;
1317 flagvals = cdb[1];
1318 groupnum = cdb[6];
1319 control = cdb[9];
1320 break;
1321 case 12:
1322 opcode =
1323 cdb[0] == READ_12 ? READ_16 : WRITE_16;
1324 flagvals = cdb[1];
1325 groupnum = cdb[10];
1326 control = cdb[11];
1327 break;
1328 }
1329
1330 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
1331
1332 cdb[0] = opcode;
1333 cdb[1] = flagvals;
1334 cdb[14] = groupnum;
1335 cdb[15] = control;
1336
1337 /* Transfer length */
1338 cdb[13] = (u8)(num_blocks & 0xff);
1339 cdb[12] = (u8)((num_blocks >> 8) & 0xff);
1340 cdb[11] = (u8)((num_blocks >> 16) & 0xff);
1341 cdb[10] = (u8)((num_blocks >> 24) & 0xff);
1342
1343 io_request->IoFlags = cpu_to_le16(16); /* Specify 16-byte cdb */
1344 cdb_len = 16;
1345 }
1346
1347 /* Normal case, just load LBA here */
1348 switch (cdb_len) {
1349 case 6:
1350 {
1351 u8 val = cdb[1] & 0xE0;
1352 cdb[3] = (u8)(start_blk & 0xff);
1353 cdb[2] = (u8)((start_blk >> 8) & 0xff);
1354 cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f);
1355 break;
1356 }
1357 case 10:
1358 cdb[5] = (u8)(start_blk & 0xff);
1359 cdb[4] = (u8)((start_blk >> 8) & 0xff);
1360 cdb[3] = (u8)((start_blk >> 16) & 0xff);
1361 cdb[2] = (u8)((start_blk >> 24) & 0xff);
1362 break;
1363 case 12:
1364 cdb[5] = (u8)(start_blk & 0xff);
1365 cdb[4] = (u8)((start_blk >> 8) & 0xff);
1366 cdb[3] = (u8)((start_blk >> 16) & 0xff);
1367 cdb[2] = (u8)((start_blk >> 24) & 0xff);
1368 break;
1369 case 16:
1370 cdb[9] = (u8)(start_blk & 0xff);
1371 cdb[8] = (u8)((start_blk >> 8) & 0xff);
1372 cdb[7] = (u8)((start_blk >> 16) & 0xff);
1373 cdb[6] = (u8)((start_blk >> 24) & 0xff);
1374 cdb[5] = (u8)((start_blk >> 32) & 0xff);
1375 cdb[4] = (u8)((start_blk >> 40) & 0xff);
1376 cdb[3] = (u8)((start_blk >> 48) & 0xff);
1377 cdb[2] = (u8)((start_blk >> 56) & 0xff);
1378 break;
1379 }
1380 }
1381 }
1382
1383 /**
1384 * megasas_build_ldio_fusion - Prepares IOs to devices
1385 * @instance: Adapter soft state
1386 * @scp: SCSI command
1387 * @cmd: Command to be prepared
1388 *
1389 * Prepares the io_request and chain elements (sg_frame) for IO
1390 * The IO can be for PD (Fast Path) or LD
1391 */
1392 void
1393 megasas_build_ldio_fusion(struct megasas_instance *instance,
1394 struct scsi_cmnd *scp,
1395 struct megasas_cmd_fusion *cmd)
1396 {
1397 u8 fp_possible;
1398 u32 start_lba_lo, start_lba_hi, device_id, datalength = 0;
1399 struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
1400 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
1401 struct IO_REQUEST_INFO io_info;
1402 struct fusion_context *fusion;
1403 struct MR_FW_RAID_MAP_ALL *local_map_ptr;
1404 u8 *raidLUN;
1405
1406 device_id = MEGASAS_DEV_INDEX(instance, scp);
1407
1408 fusion = instance->ctrl_context;
1409
1410 io_request = cmd->io_request;
1411 io_request->RaidContext.VirtualDiskTgtId = cpu_to_le16(device_id);
1412 io_request->RaidContext.status = 0;
1413 io_request->RaidContext.exStatus = 0;
1414
1415 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
1416
1417 start_lba_lo = 0;
1418 start_lba_hi = 0;
1419 fp_possible = 0;
1420
1421 /*
1422 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1423 */
1424 if (scp->cmd_len == 6) {
1425 datalength = (u32) scp->cmnd[4];
1426 start_lba_lo = ((u32) scp->cmnd[1] << 16) |
1427 ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
1428
1429 start_lba_lo &= 0x1FFFFF;
1430 }
1431
1432 /*
1433 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1434 */
1435 else if (scp->cmd_len == 10) {
1436 datalength = (u32) scp->cmnd[8] |
1437 ((u32) scp->cmnd[7] << 8);
1438 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1439 ((u32) scp->cmnd[3] << 16) |
1440 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1441 }
1442
1443 /*
1444 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1445 */
1446 else if (scp->cmd_len == 12) {
1447 datalength = ((u32) scp->cmnd[6] << 24) |
1448 ((u32) scp->cmnd[7] << 16) |
1449 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1450 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1451 ((u32) scp->cmnd[3] << 16) |
1452 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1453 }
1454
1455 /*
1456 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1457 */
1458 else if (scp->cmd_len == 16) {
1459 datalength = ((u32) scp->cmnd[10] << 24) |
1460 ((u32) scp->cmnd[11] << 16) |
1461 ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
1462 start_lba_lo = ((u32) scp->cmnd[6] << 24) |
1463 ((u32) scp->cmnd[7] << 16) |
1464 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1465
1466 start_lba_hi = ((u32) scp->cmnd[2] << 24) |
1467 ((u32) scp->cmnd[3] << 16) |
1468 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1469 }
1470
1471 memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO));
1472 io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo;
1473 io_info.numBlocks = datalength;
1474 io_info.ldTgtId = device_id;
1475 io_request->DataLength = cpu_to_le32(scsi_bufflen(scp));
1476
1477 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1478 io_info.isRead = 1;
1479
1480 local_map_ptr = fusion->ld_map[(instance->map_id & 1)];
1481
1482 if ((MR_TargetIdToLdGet(device_id, local_map_ptr) >=
1483 MAX_LOGICAL_DRIVES) || (!fusion->fast_path_io)) {
1484 io_request->RaidContext.regLockFlags = 0;
1485 fp_possible = 0;
1486 } else {
1487 if (MR_BuildRaidContext(instance, &io_info,
1488 &io_request->RaidContext,
1489 local_map_ptr, &raidLUN))
1490 fp_possible = io_info.fpOkForIo;
1491 }
1492
1493 /* Use smp_processor_id() for now until cmd->request->cpu is CPU
1494 id by default, not CPU group id, otherwise all MSI-X queues won't
1495 be utilized */
1496 cmd->request_desc->SCSIIO.MSIxIndex = instance->msix_vectors ?
1497 smp_processor_id() % instance->msix_vectors : 0;
1498
1499 if (fp_possible) {
1500 megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp,
1501 local_map_ptr, start_lba_lo);
1502 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
1503 cmd->request_desc->SCSIIO.RequestFlags =
1504 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY
1505 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1506 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
1507 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
1508 if (io_request->RaidContext.regLockFlags ==
1509 REGION_TYPE_UNUSED)
1510 cmd->request_desc->SCSIIO.RequestFlags =
1511 (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
1512 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1513 io_request->RaidContext.Type = MPI2_TYPE_CUDA;
1514 io_request->RaidContext.nseg = 0x1;
1515 io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
1516 io_request->RaidContext.regLockFlags |=
1517 (MR_RL_FLAGS_GRANT_DESTINATION_CUDA |
1518 MR_RL_FLAGS_SEQ_NUM_ENABLE);
1519 }
1520 if ((fusion->load_balance_info[device_id].loadBalanceFlag) &&
1521 (io_info.isRead)) {
1522 io_info.devHandle =
1523 get_updated_dev_handle(
1524 &fusion->load_balance_info[device_id],
1525 &io_info);
1526 scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG;
1527 } else
1528 scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
1529 cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle;
1530 io_request->DevHandle = io_info.devHandle;
1531 /* populate the LUN field */
1532 memcpy(io_request->LUN, raidLUN, 8);
1533 } else {
1534 io_request->RaidContext.timeoutValue =
1535 cpu_to_le16(local_map_ptr->raidMap.fpPdIoTimeoutSec);
1536 cmd->request_desc->SCSIIO.RequestFlags =
1537 (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO
1538 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1539 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
1540 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
1541 if (io_request->RaidContext.regLockFlags ==
1542 REGION_TYPE_UNUSED)
1543 cmd->request_desc->SCSIIO.RequestFlags =
1544 (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
1545 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1546 io_request->RaidContext.Type = MPI2_TYPE_CUDA;
1547 io_request->RaidContext.regLockFlags |=
1548 (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 |
1549 MR_RL_FLAGS_SEQ_NUM_ENABLE);
1550 io_request->RaidContext.nseg = 0x1;
1551 }
1552 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
1553 io_request->DevHandle = cpu_to_le16(device_id);
1554 } /* Not FP */
1555 }
1556
1557 /**
1558 * megasas_build_dcdb_fusion - Prepares IOs to devices
1559 * @instance: Adapter soft state
1560 * @scp: SCSI command
1561 * @cmd: Command to be prepared
1562 *
1563 * Prepares the io_request frame for non-io cmds
1564 */
1565 static void
1566 megasas_build_dcdb_fusion(struct megasas_instance *instance,
1567 struct scsi_cmnd *scmd,
1568 struct megasas_cmd_fusion *cmd)
1569 {
1570 u32 device_id;
1571 struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
1572 u16 pd_index = 0;
1573 struct MR_FW_RAID_MAP_ALL *local_map_ptr;
1574 struct fusion_context *fusion = instance->ctrl_context;
1575 u8 span, physArm;
1576 u16 devHandle;
1577 u32 ld, arRef, pd;
1578 struct MR_LD_RAID *raid;
1579 struct RAID_CONTEXT *pRAID_Context;
1580
1581 io_request = cmd->io_request;
1582 device_id = MEGASAS_DEV_INDEX(instance, scmd);
1583 pd_index = (scmd->device->channel * MEGASAS_MAX_DEV_PER_CHANNEL)
1584 +scmd->device->id;
1585 local_map_ptr = fusion->ld_map[(instance->map_id & 1)];
1586
1587 io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
1588
1589
1590 /* Check if this is a system PD I/O */
1591 if (scmd->device->channel < MEGASAS_MAX_PD_CHANNELS &&
1592 instance->pd_list[pd_index].driveState == MR_PD_STATE_SYSTEM) {
1593 io_request->Function = 0;
1594 if (fusion->fast_path_io)
1595 io_request->DevHandle =
1596 local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
1597 io_request->RaidContext.timeoutValue =
1598 local_map_ptr->raidMap.fpPdIoTimeoutSec;
1599 io_request->RaidContext.regLockFlags = 0;
1600 io_request->RaidContext.regLockRowLBA = 0;
1601 io_request->RaidContext.regLockLength = 0;
1602 io_request->RaidContext.RAIDFlags =
1603 MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD <<
1604 MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT;
1605 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
1606 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
1607 io_request->IoFlags |=
1608 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH;
1609 cmd->request_desc->SCSIIO.RequestFlags =
1610 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
1611 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1612 cmd->request_desc->SCSIIO.DevHandle =
1613 local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
1614 /*
1615 * If the command is for the tape device, set the
1616 * FP timeout to the os layer timeout value.
1617 */
1618 if (scmd->device->type == TYPE_TAPE) {
1619 if ((scmd->request->timeout / HZ) > 0xFFFF)
1620 io_request->RaidContext.timeoutValue =
1621 0xFFFF;
1622 else
1623 io_request->RaidContext.timeoutValue =
1624 scmd->request->timeout / HZ;
1625 }
1626 } else {
1627 if (scmd->device->channel < MEGASAS_MAX_PD_CHANNELS)
1628 goto NonFastPath;
1629
1630 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
1631 if ((ld >= MAX_LOGICAL_DRIVES) || (!fusion->fast_path_io))
1632 goto NonFastPath;
1633
1634 raid = MR_LdRaidGet(ld, local_map_ptr);
1635
1636 /* check if this LD is FP capable */
1637 if (!(raid->capability.fpNonRWCapable))
1638 /* not FP capable, send as non-FP */
1639 goto NonFastPath;
1640
1641 /* get RAID_Context pointer */
1642 pRAID_Context = &io_request->RaidContext;
1643
1644 /* set RAID context values */
1645 pRAID_Context->regLockFlags = REGION_TYPE_SHARED_READ;
1646 pRAID_Context->timeoutValue = raid->fpIoTimeoutForLd;
1647 pRAID_Context->VirtualDiskTgtId = cpu_to_le16(device_id);
1648 pRAID_Context->regLockRowLBA = 0;
1649 pRAID_Context->regLockLength = 0;
1650 pRAID_Context->configSeqNum = raid->seqNum;
1651
1652 /* get the DevHandle for the PD (since this is
1653 fpNonRWCapable, this is a single disk RAID0) */
1654 span = physArm = 0;
1655 arRef = MR_LdSpanArrayGet(ld, span, local_map_ptr);
1656 pd = MR_ArPdGet(arRef, physArm, local_map_ptr);
1657 devHandle = MR_PdDevHandleGet(pd, local_map_ptr);
1658
1659 /* build request descriptor */
1660 cmd->request_desc->SCSIIO.RequestFlags =
1661 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
1662 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1663 cmd->request_desc->SCSIIO.DevHandle = devHandle;
1664
1665 /* populate the LUN field */
1666 memcpy(io_request->LUN, raid->LUN, 8);
1667
1668 /* build the raidScsiIO structure */
1669 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
1670 io_request->DevHandle = devHandle;
1671
1672 return;
1673
1674 NonFastPath:
1675 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
1676 io_request->DevHandle = cpu_to_le16(device_id);
1677 cmd->request_desc->SCSIIO.RequestFlags =
1678 (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
1679 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1680 }
1681 io_request->RaidContext.VirtualDiskTgtId = cpu_to_le16(device_id);
1682 io_request->LUN[1] = scmd->device->lun;
1683 }
1684
1685 /**
1686 * megasas_build_io_fusion - Prepares IOs to devices
1687 * @instance: Adapter soft state
1688 * @scp: SCSI command
1689 * @cmd: Command to be prepared
1690 *
1691 * Invokes helper functions to prepare request frames
1692 * and sets flags appropriate for IO/Non-IO cmd
1693 */
1694 int
1695 megasas_build_io_fusion(struct megasas_instance *instance,
1696 struct scsi_cmnd *scp,
1697 struct megasas_cmd_fusion *cmd)
1698 {
1699 u32 device_id, sge_count;
1700 struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request;
1701
1702 device_id = MEGASAS_DEV_INDEX(instance, scp);
1703
1704 /* Zero out some fields so they don't get reused */
1705 io_request->LUN[1] = 0;
1706 io_request->CDB.EEDP32.PrimaryReferenceTag = 0;
1707 io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0;
1708 io_request->EEDPFlags = 0;
1709 io_request->Control = 0;
1710 io_request->EEDPBlockSize = 0;
1711 io_request->ChainOffset = 0;
1712 io_request->RaidContext.RAIDFlags = 0;
1713 io_request->RaidContext.Type = 0;
1714 io_request->RaidContext.nseg = 0;
1715
1716 memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len);
1717 /*
1718 * Just the CDB length,rest of the Flags are zero
1719 * This will be modified for FP in build_ldio_fusion
1720 */
1721 io_request->IoFlags = cpu_to_le16(scp->cmd_len);
1722
1723 if (megasas_is_ldio(scp))
1724 megasas_build_ldio_fusion(instance, scp, cmd);
1725 else
1726 megasas_build_dcdb_fusion(instance, scp, cmd);
1727
1728 /*
1729 * Construct SGL
1730 */
1731
1732 sge_count =
1733 megasas_make_sgl_fusion(instance, scp,
1734 (struct MPI25_IEEE_SGE_CHAIN64 *)
1735 &io_request->SGL, cmd);
1736
1737 if (sge_count > instance->max_num_sge) {
1738 printk(KERN_ERR "megasas: Error. sge_count (0x%x) exceeds "
1739 "max (0x%x) allowed\n", sge_count,
1740 instance->max_num_sge);
1741 return 1;
1742 }
1743
1744 io_request->RaidContext.numSGE = sge_count;
1745
1746 io_request->SGLFlags = cpu_to_le16(MPI2_SGE_FLAGS_64_BIT_ADDRESSING);
1747
1748 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1749 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_WRITE);
1750 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1751 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_READ);
1752
1753 io_request->SGLOffset0 =
1754 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4;
1755
1756 io_request->SenseBufferLowAddress = cpu_to_le32(cmd->sense_phys_addr);
1757 io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
1758
1759 cmd->scmd = scp;
1760 scp->SCp.ptr = (char *)cmd;
1761
1762 return 0;
1763 }
1764
1765 union MEGASAS_REQUEST_DESCRIPTOR_UNION *
1766 megasas_get_request_descriptor(struct megasas_instance *instance, u16 index)
1767 {
1768 u8 *p;
1769 struct fusion_context *fusion;
1770
1771 if (index >= instance->max_fw_cmds) {
1772 printk(KERN_ERR "megasas: Invalid SMID (0x%x)request for "
1773 "descriptor\n", index);
1774 return NULL;
1775 }
1776 fusion = instance->ctrl_context;
1777 p = fusion->req_frames_desc
1778 +sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *index;
1779
1780 return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p;
1781 }
1782
1783 /**
1784 * megasas_build_and_issue_cmd_fusion -Main routine for building and
1785 * issuing non IOCTL cmd
1786 * @instance: Adapter soft state
1787 * @scmd: pointer to scsi cmd from OS
1788 */
1789 static u32
1790 megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance,
1791 struct scsi_cmnd *scmd)
1792 {
1793 struct megasas_cmd_fusion *cmd;
1794 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
1795 u32 index;
1796 struct fusion_context *fusion;
1797
1798 fusion = instance->ctrl_context;
1799
1800 cmd = megasas_get_cmd_fusion(instance);
1801 if (!cmd)
1802 return SCSI_MLQUEUE_HOST_BUSY;
1803
1804 index = cmd->index;
1805
1806 req_desc = megasas_get_request_descriptor(instance, index-1);
1807 if (!req_desc)
1808 return 1;
1809
1810 req_desc->Words = 0;
1811 cmd->request_desc = req_desc;
1812
1813 if (megasas_build_io_fusion(instance, scmd, cmd)) {
1814 megasas_return_cmd_fusion(instance, cmd);
1815 printk(KERN_ERR "megasas: Error building command.\n");
1816 cmd->request_desc = NULL;
1817 return 1;
1818 }
1819
1820 req_desc = cmd->request_desc;
1821 req_desc->SCSIIO.SMID = cpu_to_le16(index);
1822
1823 if (cmd->io_request->ChainOffset != 0 &&
1824 cmd->io_request->ChainOffset != 0xF)
1825 printk(KERN_ERR "megasas: The chain offset value is not "
1826 "correct : %x\n", cmd->io_request->ChainOffset);
1827
1828 /*
1829 * Issue the command to the FW
1830 */
1831 atomic_inc(&instance->fw_outstanding);
1832
1833 instance->instancet->fire_cmd(instance,
1834 req_desc->u.low, req_desc->u.high,
1835 instance->reg_set);
1836
1837 return 0;
1838 }
1839
1840 /**
1841 * complete_cmd_fusion - Completes command
1842 * @instance: Adapter soft state
1843 * Completes all commands that is in reply descriptor queue
1844 */
1845 int
1846 complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex)
1847 {
1848 union MPI2_REPLY_DESCRIPTORS_UNION *desc;
1849 struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc;
1850 struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req;
1851 struct fusion_context *fusion;
1852 struct megasas_cmd *cmd_mfi;
1853 struct megasas_cmd_fusion *cmd_fusion;
1854 u16 smid, num_completed;
1855 u8 reply_descript_type, arm;
1856 u32 status, extStatus, device_id;
1857 union desc_value d_val;
1858 struct LD_LOAD_BALANCE_INFO *lbinfo;
1859
1860 fusion = instance->ctrl_context;
1861
1862 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
1863 return IRQ_HANDLED;
1864
1865 desc = fusion->reply_frames_desc;
1866 desc += ((MSIxIndex * fusion->reply_alloc_sz)/
1867 sizeof(union MPI2_REPLY_DESCRIPTORS_UNION)) +
1868 fusion->last_reply_idx[MSIxIndex];
1869
1870 reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
1871
1872 d_val.word = desc->Words;
1873
1874 reply_descript_type = reply_desc->ReplyFlags &
1875 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
1876
1877 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
1878 return IRQ_NONE;
1879
1880 num_completed = 0;
1881
1882 while ((d_val.u.low != UINT_MAX) && (d_val.u.high != UINT_MAX)) {
1883 smid = le16_to_cpu(reply_desc->SMID);
1884
1885 cmd_fusion = fusion->cmd_list[smid - 1];
1886
1887 scsi_io_req =
1888 (struct MPI2_RAID_SCSI_IO_REQUEST *)
1889 cmd_fusion->io_request;
1890
1891 if (cmd_fusion->scmd)
1892 cmd_fusion->scmd->SCp.ptr = NULL;
1893
1894 status = scsi_io_req->RaidContext.status;
1895 extStatus = scsi_io_req->RaidContext.exStatus;
1896
1897 switch (scsi_io_req->Function) {
1898 case MPI2_FUNCTION_SCSI_IO_REQUEST: /*Fast Path IO.*/
1899 /* Update load balancing info */
1900 device_id = MEGASAS_DEV_INDEX(instance,
1901 cmd_fusion->scmd);
1902 lbinfo = &fusion->load_balance_info[device_id];
1903 if (cmd_fusion->scmd->SCp.Status &
1904 MEGASAS_LOAD_BALANCE_FLAG) {
1905 arm = lbinfo->raid1DevHandle[0] ==
1906 cmd_fusion->io_request->DevHandle ? 0 :
1907 1;
1908 atomic_dec(&lbinfo->scsi_pending_cmds[arm]);
1909 cmd_fusion->scmd->SCp.Status &=
1910 ~MEGASAS_LOAD_BALANCE_FLAG;
1911 }
1912 if (reply_descript_type ==
1913 MPI2_RPY_DESCRIPT_FLAGS_SCSI_IO_SUCCESS) {
1914 if (megasas_dbg_lvl == 5)
1915 printk(KERN_ERR "\nmegasas: FAST Path "
1916 "IO Success\n");
1917 }
1918 /* Fall thru and complete IO */
1919 case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */
1920 /* Map the FW Cmd Status */
1921 map_cmd_status(cmd_fusion, status, extStatus);
1922 scsi_dma_unmap(cmd_fusion->scmd);
1923 cmd_fusion->scmd->scsi_done(cmd_fusion->scmd);
1924 scsi_io_req->RaidContext.status = 0;
1925 scsi_io_req->RaidContext.exStatus = 0;
1926 megasas_return_cmd_fusion(instance, cmd_fusion);
1927 atomic_dec(&instance->fw_outstanding);
1928
1929 break;
1930 case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */
1931 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
1932 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
1933 cmd_fusion->flags = 0;
1934 megasas_return_cmd_fusion(instance, cmd_fusion);
1935
1936 break;
1937 }
1938
1939 fusion->last_reply_idx[MSIxIndex]++;
1940 if (fusion->last_reply_idx[MSIxIndex] >=
1941 fusion->reply_q_depth)
1942 fusion->last_reply_idx[MSIxIndex] = 0;
1943
1944 desc->Words = ULLONG_MAX;
1945 num_completed++;
1946
1947 /* Get the next reply descriptor */
1948 if (!fusion->last_reply_idx[MSIxIndex])
1949 desc = fusion->reply_frames_desc +
1950 ((MSIxIndex * fusion->reply_alloc_sz)/
1951 sizeof(union MPI2_REPLY_DESCRIPTORS_UNION));
1952 else
1953 desc++;
1954
1955 reply_desc =
1956 (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
1957
1958 d_val.word = desc->Words;
1959
1960 reply_descript_type = reply_desc->ReplyFlags &
1961 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
1962
1963 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
1964 break;
1965 }
1966
1967 if (!num_completed)
1968 return IRQ_NONE;
1969
1970 wmb();
1971 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
1972 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
1973 writel(((MSIxIndex & 0x7) << 24) |
1974 fusion->last_reply_idx[MSIxIndex],
1975 instance->reply_post_host_index_addr[MSIxIndex/8]);
1976 else
1977 writel((MSIxIndex << 24) |
1978 fusion->last_reply_idx[MSIxIndex],
1979 instance->reply_post_host_index_addr[0]);
1980 megasas_check_and_restore_queue_depth(instance);
1981 return IRQ_HANDLED;
1982 }
1983
1984 /**
1985 * megasas_complete_cmd_dpc_fusion - Completes command
1986 * @instance: Adapter soft state
1987 *
1988 * Tasklet to complete cmds
1989 */
1990 void
1991 megasas_complete_cmd_dpc_fusion(unsigned long instance_addr)
1992 {
1993 struct megasas_instance *instance =
1994 (struct megasas_instance *)instance_addr;
1995 unsigned long flags;
1996 u32 count, MSIxIndex;
1997
1998 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
1999
2000 /* If we have already declared adapter dead, donot complete cmds */
2001 spin_lock_irqsave(&instance->hba_lock, flags);
2002 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
2003 spin_unlock_irqrestore(&instance->hba_lock, flags);
2004 return;
2005 }
2006 spin_unlock_irqrestore(&instance->hba_lock, flags);
2007
2008 for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++)
2009 complete_cmd_fusion(instance, MSIxIndex);
2010 }
2011
2012 /**
2013 * megasas_isr_fusion - isr entry point
2014 */
2015 irqreturn_t megasas_isr_fusion(int irq, void *devp)
2016 {
2017 struct megasas_irq_context *irq_context = devp;
2018 struct megasas_instance *instance = irq_context->instance;
2019 u32 mfiStatus, fw_state;
2020
2021 if (instance->mask_interrupts)
2022 return IRQ_NONE;
2023
2024 if (!instance->msix_vectors) {
2025 mfiStatus = instance->instancet->clear_intr(instance->reg_set);
2026 if (!mfiStatus)
2027 return IRQ_NONE;
2028 }
2029
2030 /* If we are resetting, bail */
2031 if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) {
2032 instance->instancet->clear_intr(instance->reg_set);
2033 return IRQ_HANDLED;
2034 }
2035
2036 if (!complete_cmd_fusion(instance, irq_context->MSIxIndex)) {
2037 instance->instancet->clear_intr(instance->reg_set);
2038 /* If we didn't complete any commands, check for FW fault */
2039 fw_state = instance->instancet->read_fw_status_reg(
2040 instance->reg_set) & MFI_STATE_MASK;
2041 if (fw_state == MFI_STATE_FAULT)
2042 schedule_work(&instance->work_init);
2043 }
2044
2045 return IRQ_HANDLED;
2046 }
2047
2048 /**
2049 * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru
2050 * @instance: Adapter soft state
2051 * mfi_cmd: megasas_cmd pointer
2052 *
2053 */
2054 u8
2055 build_mpt_mfi_pass_thru(struct megasas_instance *instance,
2056 struct megasas_cmd *mfi_cmd)
2057 {
2058 struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain;
2059 struct MPI2_RAID_SCSI_IO_REQUEST *io_req;
2060 struct megasas_cmd_fusion *cmd;
2061 struct fusion_context *fusion;
2062 struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr;
2063
2064 cmd = megasas_get_cmd_fusion(instance);
2065 if (!cmd)
2066 return 1;
2067
2068 /* Save the smid. To be used for returning the cmd */
2069 mfi_cmd->context.smid = cmd->index;
2070
2071 cmd->sync_cmd_idx = mfi_cmd->index;
2072
2073 /*
2074 * For cmds where the flag is set, store the flag and check
2075 * on completion. For cmds with this flag, don't call
2076 * megasas_complete_cmd
2077 */
2078
2079 if (frame_hdr->flags & MFI_FRAME_DONT_POST_IN_REPLY_QUEUE)
2080 cmd->flags = MFI_FRAME_DONT_POST_IN_REPLY_QUEUE;
2081
2082 fusion = instance->ctrl_context;
2083 io_req = cmd->io_request;
2084
2085 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
2086 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
2087 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end =
2088 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL;
2089 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
2090 sgl_ptr_end->Flags = 0;
2091 }
2092
2093 mpi25_ieee_chain =
2094 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain;
2095
2096 io_req->Function = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST;
2097 io_req->SGLOffset0 = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST,
2098 SGL) / 4;
2099 io_req->ChainOffset = fusion->chain_offset_mfi_pthru;
2100
2101 mpi25_ieee_chain->Address = cpu_to_le64(mfi_cmd->frame_phys_addr);
2102
2103 mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
2104 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR;
2105
2106 mpi25_ieee_chain->Length = cpu_to_le32(MEGASAS_MAX_SZ_CHAIN_FRAME);
2107
2108 return 0;
2109 }
2110
2111 /**
2112 * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd
2113 * @instance: Adapter soft state
2114 * @cmd: mfi cmd to build
2115 *
2116 */
2117 union MEGASAS_REQUEST_DESCRIPTOR_UNION *
2118 build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
2119 {
2120 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2121 u16 index;
2122
2123 if (build_mpt_mfi_pass_thru(instance, cmd)) {
2124 printk(KERN_ERR "Couldn't build MFI pass thru cmd\n");
2125 return NULL;
2126 }
2127
2128 index = cmd->context.smid;
2129
2130 req_desc = megasas_get_request_descriptor(instance, index - 1);
2131
2132 if (!req_desc)
2133 return NULL;
2134
2135 req_desc->Words = 0;
2136 req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
2137 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2138
2139 req_desc->SCSIIO.SMID = cpu_to_le16(index);
2140
2141 return req_desc;
2142 }
2143
2144 /**
2145 * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd
2146 * @instance: Adapter soft state
2147 * @cmd: mfi cmd pointer
2148 *
2149 */
2150 void
2151 megasas_issue_dcmd_fusion(struct megasas_instance *instance,
2152 struct megasas_cmd *cmd)
2153 {
2154 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2155
2156 req_desc = build_mpt_cmd(instance, cmd);
2157 if (!req_desc) {
2158 printk(KERN_ERR "Couldn't issue MFI pass thru cmd\n");
2159 return;
2160 }
2161 instance->instancet->fire_cmd(instance, req_desc->u.low,
2162 req_desc->u.high, instance->reg_set);
2163 }
2164
2165 /**
2166 * megasas_release_fusion - Reverses the FW initialization
2167 * @intance: Adapter soft state
2168 */
2169 void
2170 megasas_release_fusion(struct megasas_instance *instance)
2171 {
2172 megasas_free_cmds(instance);
2173 megasas_free_cmds_fusion(instance);
2174
2175 iounmap(instance->reg_set);
2176
2177 pci_release_selected_regions(instance->pdev, instance->bar);
2178 }
2179
2180 /**
2181 * megasas_read_fw_status_reg_fusion - returns the current FW status value
2182 * @regs: MFI register set
2183 */
2184 static u32
2185 megasas_read_fw_status_reg_fusion(struct megasas_register_set __iomem *regs)
2186 {
2187 return readl(&(regs)->outbound_scratch_pad);
2188 }
2189
2190 /**
2191 * megasas_adp_reset_fusion - For controller reset
2192 * @regs: MFI register set
2193 */
2194 static int
2195 megasas_adp_reset_fusion(struct megasas_instance *instance,
2196 struct megasas_register_set __iomem *regs)
2197 {
2198 return 0;
2199 }
2200
2201 /**
2202 * megasas_check_reset_fusion - For controller reset check
2203 * @regs: MFI register set
2204 */
2205 static int
2206 megasas_check_reset_fusion(struct megasas_instance *instance,
2207 struct megasas_register_set __iomem *regs)
2208 {
2209 return 0;
2210 }
2211
2212 /* This function waits for outstanding commands on fusion to complete */
2213 int megasas_wait_for_outstanding_fusion(struct megasas_instance *instance)
2214 {
2215 int i, outstanding, retval = 0;
2216 u32 fw_state;
2217
2218 for (i = 0; i < resetwaittime; i++) {
2219 /* Check if firmware is in fault state */
2220 fw_state = instance->instancet->read_fw_status_reg(
2221 instance->reg_set) & MFI_STATE_MASK;
2222 if (fw_state == MFI_STATE_FAULT) {
2223 printk(KERN_WARNING "megasas: Found FW in FAULT state,"
2224 " will reset adapter.\n");
2225 retval = 1;
2226 goto out;
2227 }
2228
2229 outstanding = atomic_read(&instance->fw_outstanding);
2230 if (!outstanding)
2231 goto out;
2232
2233 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2234 printk(KERN_NOTICE "megasas: [%2d]waiting for %d "
2235 "commands to complete\n", i, outstanding);
2236 megasas_complete_cmd_dpc_fusion(
2237 (unsigned long)instance);
2238 }
2239 msleep(1000);
2240 }
2241
2242 if (atomic_read(&instance->fw_outstanding)) {
2243 printk("megaraid_sas: pending commands remain after waiting, "
2244 "will reset adapter.\n");
2245 retval = 1;
2246 }
2247 out:
2248 return retval;
2249 }
2250
2251 void megasas_reset_reply_desc(struct megasas_instance *instance)
2252 {
2253 int i, count;
2254 struct fusion_context *fusion;
2255 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
2256
2257 fusion = instance->ctrl_context;
2258 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
2259 for (i = 0 ; i < count ; i++)
2260 fusion->last_reply_idx[i] = 0;
2261 reply_desc = fusion->reply_frames_desc;
2262 for (i = 0 ; i < fusion->reply_q_depth * count; i++, reply_desc++)
2263 reply_desc->Words = ULLONG_MAX;
2264 }
2265
2266 /* Core fusion reset function */
2267 int megasas_reset_fusion(struct Scsi_Host *shost)
2268 {
2269 int retval = SUCCESS, i, j, retry = 0;
2270 struct megasas_instance *instance;
2271 struct megasas_cmd_fusion *cmd_fusion;
2272 struct fusion_context *fusion;
2273 struct megasas_cmd *cmd_mfi;
2274 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2275 u32 host_diag, abs_state, status_reg, reset_adapter;
2276
2277 instance = (struct megasas_instance *)shost->hostdata;
2278 fusion = instance->ctrl_context;
2279
2280 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
2281 printk(KERN_WARNING "megaraid_sas: Hardware critical error, "
2282 "returning FAILED.\n");
2283 return FAILED;
2284 }
2285
2286 mutex_lock(&instance->reset_mutex);
2287 set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
2288 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
2289 instance->instancet->disable_intr(instance);
2290 msleep(1000);
2291
2292 /* First try waiting for commands to complete */
2293 if (megasas_wait_for_outstanding_fusion(instance)) {
2294 printk(KERN_WARNING "megaraid_sas: resetting fusion "
2295 "adapter.\n");
2296 /* Now return commands back to the OS */
2297 for (i = 0 ; i < instance->max_fw_cmds; i++) {
2298 cmd_fusion = fusion->cmd_list[i];
2299 if (cmd_fusion->scmd) {
2300 scsi_dma_unmap(cmd_fusion->scmd);
2301 cmd_fusion->scmd->result = (DID_RESET << 16);
2302 cmd_fusion->scmd->scsi_done(cmd_fusion->scmd);
2303 megasas_return_cmd_fusion(instance, cmd_fusion);
2304 atomic_dec(&instance->fw_outstanding);
2305 }
2306 }
2307
2308 status_reg = instance->instancet->read_fw_status_reg(
2309 instance->reg_set);
2310 abs_state = status_reg & MFI_STATE_MASK;
2311 reset_adapter = status_reg & MFI_RESET_ADAPTER;
2312 if (instance->disableOnlineCtrlReset ||
2313 (abs_state == MFI_STATE_FAULT && !reset_adapter)) {
2314 /* Reset not supported, kill adapter */
2315 printk(KERN_WARNING "megaraid_sas: Reset not supported"
2316 ", killing adapter.\n");
2317 megaraid_sas_kill_hba(instance);
2318 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2319 retval = FAILED;
2320 goto out;
2321 }
2322
2323 /* Now try to reset the chip */
2324 for (i = 0; i < MEGASAS_FUSION_MAX_RESET_TRIES; i++) {
2325 writel(MPI2_WRSEQ_FLUSH_KEY_VALUE,
2326 &instance->reg_set->fusion_seq_offset);
2327 writel(MPI2_WRSEQ_1ST_KEY_VALUE,
2328 &instance->reg_set->fusion_seq_offset);
2329 writel(MPI2_WRSEQ_2ND_KEY_VALUE,
2330 &instance->reg_set->fusion_seq_offset);
2331 writel(MPI2_WRSEQ_3RD_KEY_VALUE,
2332 &instance->reg_set->fusion_seq_offset);
2333 writel(MPI2_WRSEQ_4TH_KEY_VALUE,
2334 &instance->reg_set->fusion_seq_offset);
2335 writel(MPI2_WRSEQ_5TH_KEY_VALUE,
2336 &instance->reg_set->fusion_seq_offset);
2337 writel(MPI2_WRSEQ_6TH_KEY_VALUE,
2338 &instance->reg_set->fusion_seq_offset);
2339
2340 /* Check that the diag write enable (DRWE) bit is on */
2341 host_diag = readl(&instance->reg_set->fusion_host_diag);
2342 retry = 0;
2343 while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) {
2344 msleep(100);
2345 host_diag =
2346 readl(&instance->reg_set->fusion_host_diag);
2347 if (retry++ == 100) {
2348 printk(KERN_WARNING "megaraid_sas: "
2349 "Host diag unlock failed!\n");
2350 break;
2351 }
2352 }
2353 if (!(host_diag & HOST_DIAG_WRITE_ENABLE))
2354 continue;
2355
2356 /* Send chip reset command */
2357 writel(host_diag | HOST_DIAG_RESET_ADAPTER,
2358 &instance->reg_set->fusion_host_diag);
2359 msleep(3000);
2360
2361 /* Make sure reset adapter bit is cleared */
2362 host_diag = readl(&instance->reg_set->fusion_host_diag);
2363 retry = 0;
2364 while (host_diag & HOST_DIAG_RESET_ADAPTER) {
2365 msleep(100);
2366 host_diag =
2367 readl(&instance->reg_set->fusion_host_diag);
2368 if (retry++ == 1000) {
2369 printk(KERN_WARNING "megaraid_sas: "
2370 "Diag reset adapter never "
2371 "cleared!\n");
2372 break;
2373 }
2374 }
2375 if (host_diag & HOST_DIAG_RESET_ADAPTER)
2376 continue;
2377
2378 abs_state =
2379 instance->instancet->read_fw_status_reg(
2380 instance->reg_set) & MFI_STATE_MASK;
2381 retry = 0;
2382
2383 while ((abs_state <= MFI_STATE_FW_INIT) &&
2384 (retry++ < 1000)) {
2385 msleep(100);
2386 abs_state =
2387 instance->instancet->read_fw_status_reg(
2388 instance->reg_set) & MFI_STATE_MASK;
2389 }
2390 if (abs_state <= MFI_STATE_FW_INIT) {
2391 printk(KERN_WARNING "megaraid_sas: firmware "
2392 "state < MFI_STATE_FW_INIT, state = "
2393 "0x%x\n", abs_state);
2394 continue;
2395 }
2396
2397 /* Wait for FW to become ready */
2398 if (megasas_transition_to_ready(instance, 1)) {
2399 printk(KERN_WARNING "megaraid_sas: Failed to "
2400 "transition controller to ready.\n");
2401 continue;
2402 }
2403
2404 megasas_reset_reply_desc(instance);
2405 if (megasas_ioc_init_fusion(instance)) {
2406 printk(KERN_WARNING "megaraid_sas: "
2407 "megasas_ioc_init_fusion() failed!\n");
2408 continue;
2409 }
2410
2411 clear_bit(MEGASAS_FUSION_IN_RESET,
2412 &instance->reset_flags);
2413 instance->instancet->enable_intr(instance);
2414 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
2415
2416 /* Re-fire management commands */
2417 for (j = 0 ; j < instance->max_fw_cmds; j++) {
2418 cmd_fusion = fusion->cmd_list[j];
2419 if (cmd_fusion->sync_cmd_idx !=
2420 (u32)ULONG_MAX) {
2421 cmd_mfi =
2422 instance->
2423 cmd_list[cmd_fusion->sync_cmd_idx];
2424 if (cmd_mfi->frame->dcmd.opcode ==
2425 MR_DCMD_LD_MAP_GET_INFO) {
2426 megasas_return_cmd(instance,
2427 cmd_mfi);
2428 megasas_return_cmd_fusion(
2429 instance, cmd_fusion);
2430 } else {
2431 req_desc =
2432 megasas_get_request_descriptor(
2433 instance,
2434 cmd_mfi->context.smid
2435 -1);
2436 if (!req_desc)
2437 printk(KERN_WARNING
2438 "req_desc NULL"
2439 "\n");
2440 else {
2441 instance->instancet->
2442 fire_cmd(instance,
2443 req_desc->
2444 u.low,
2445 req_desc->
2446 u.high,
2447 instance->
2448 reg_set);
2449 }
2450 }
2451 }
2452 }
2453
2454 /* Reset load balance info */
2455 memset(fusion->load_balance_info, 0,
2456 sizeof(struct LD_LOAD_BALANCE_INFO)
2457 *MAX_LOGICAL_DRIVES);
2458
2459 if (!megasas_get_map_info(instance))
2460 megasas_sync_map_info(instance);
2461
2462 /* Adapter reset completed successfully */
2463 printk(KERN_WARNING "megaraid_sas: Reset "
2464 "successful.\n");
2465 retval = SUCCESS;
2466 goto out;
2467 }
2468 /* Reset failed, kill the adapter */
2469 printk(KERN_WARNING "megaraid_sas: Reset failed, killing "
2470 "adapter.\n");
2471 megaraid_sas_kill_hba(instance);
2472 retval = FAILED;
2473 } else {
2474 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
2475 instance->instancet->enable_intr(instance);
2476 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
2477 }
2478 out:
2479 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
2480 mutex_unlock(&instance->reset_mutex);
2481 return retval;
2482 }
2483
2484 /* Fusion OCR work queue */
2485 void megasas_fusion_ocr_wq(struct work_struct *work)
2486 {
2487 struct megasas_instance *instance =
2488 container_of(work, struct megasas_instance, work_init);
2489
2490 megasas_reset_fusion(instance->host);
2491 }
2492
2493 struct megasas_instance_template megasas_instance_template_fusion = {
2494 .fire_cmd = megasas_fire_cmd_fusion,
2495 .enable_intr = megasas_enable_intr_fusion,
2496 .disable_intr = megasas_disable_intr_fusion,
2497 .clear_intr = megasas_clear_intr_fusion,
2498 .read_fw_status_reg = megasas_read_fw_status_reg_fusion,
2499 .adp_reset = megasas_adp_reset_fusion,
2500 .check_reset = megasas_check_reset_fusion,
2501 .service_isr = megasas_isr_fusion,
2502 .tasklet = megasas_complete_cmd_dpc_fusion,
2503 .init_adapter = megasas_init_adapter_fusion,
2504 .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion,
2505 .issue_dcmd = megasas_issue_dcmd_fusion,
2506 };
Linux kernel - Deliverables
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