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hfs: get rid of hfs_sync_super
[linux/fpc-iii.git] / drivers / scsi / megaraid / megaraid_sas_fusion.c
bloba610cf1d48473301f60a805fc2636bdd3d0d7714
1 /*
2 * Linux MegaRAID driver for SAS based RAID controllers
3 *
4 * Copyright (c) 2009-2011 LSI Corporation.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 *
20 * FILE: megaraid_sas_fusion.c
21 *
22 * Authors: LSI Corporation
23 * Sumant Patro
24 * Adam Radford <linuxraid@lsi.com>
25 *
26 * Send feedback to: <megaraidlinux@lsi.com>
27 *
28 * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035
29 * ATTN: Linuxraid
30 */
31
32 #include <linux/kernel.h>
33 #include <linux/types.h>
34 #include <linux/pci.h>
35 #include <linux/list.h>
36 #include <linux/moduleparam.h>
37 #include <linux/module.h>
38 #include <linux/spinlock.h>
39 #include <linux/interrupt.h>
40 #include <linux/delay.h>
41 #include <linux/uio.h>
42 #include <linux/uaccess.h>
43 #include <linux/fs.h>
44 #include <linux/compat.h>
45 #include <linux/blkdev.h>
46 #include <linux/mutex.h>
47 #include <linux/poll.h>
48
49 #include <scsi/scsi.h>
50 #include <scsi/scsi_cmnd.h>
51 #include <scsi/scsi_device.h>
52 #include <scsi/scsi_host.h>
53
54 #include "megaraid_sas_fusion.h"
55 #include "megaraid_sas.h"
56
57 extern void megasas_free_cmds(struct megasas_instance *instance);
58 extern struct megasas_cmd *megasas_get_cmd(struct megasas_instance
59 *instance);
60 extern void
61 megasas_complete_cmd(struct megasas_instance *instance,
62 struct megasas_cmd *cmd, u8 alt_status);
63 int megasas_is_ldio(struct scsi_cmnd *cmd);
64 int
65 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd);
66
67 void
68 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd);
69 int megasas_alloc_cmds(struct megasas_instance *instance);
70 int
71 megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs);
72 int
73 megasas_issue_polled(struct megasas_instance *instance,
74 struct megasas_cmd *cmd);
75
76 u8
77 MR_BuildRaidContext(struct megasas_instance *instance,
78 struct IO_REQUEST_INFO *io_info,
79 struct RAID_CONTEXT *pRAID_Context,
80 struct MR_FW_RAID_MAP_ALL *map);
81 u16 MR_TargetIdToLdGet(u32 ldTgtId, struct MR_FW_RAID_MAP_ALL *map);
82 struct MR_LD_RAID *MR_LdRaidGet(u32 ld, struct MR_FW_RAID_MAP_ALL *map);
83
84 u16 MR_GetLDTgtId(u32 ld, struct MR_FW_RAID_MAP_ALL *map);
85
86 void
87 megasas_check_and_restore_queue_depth(struct megasas_instance *instance);
88
89 u8 MR_ValidateMapInfo(struct MR_FW_RAID_MAP_ALL *map,
90 struct LD_LOAD_BALANCE_INFO *lbInfo);
91 u16 get_updated_dev_handle(struct LD_LOAD_BALANCE_INFO *lbInfo,
92 struct IO_REQUEST_INFO *in_info);
93 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
94 void megaraid_sas_kill_hba(struct megasas_instance *instance);
95
96 extern u32 megasas_dbg_lvl;
97
98 /**
99 * megasas_enable_intr_fusion - Enables interrupts
100 * @regs: MFI register set
101 */
102 void
103 megasas_enable_intr_fusion(struct megasas_register_set __iomem *regs)
104 {
105 /* For Thunderbolt/Invader also clear intr on enable */
106 writel(~0, &regs->outbound_intr_status);
107 readl(&regs->outbound_intr_status);
108
109 writel(~MFI_FUSION_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
110
111 /* Dummy readl to force pci flush */
112 readl(&regs->outbound_intr_mask);
113 }
114
115 /**
116 * megasas_disable_intr_fusion - Disables interrupt
117 * @regs: MFI register set
118 */
119 void
120 megasas_disable_intr_fusion(struct megasas_register_set __iomem *regs)
121 {
122 u32 mask = 0xFFFFFFFF;
123 u32 status;
124
125 writel(mask, &regs->outbound_intr_mask);
126 /* Dummy readl to force pci flush */
127 status = readl(&regs->outbound_intr_mask);
128 }
129
130 int
131 megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs)
132 {
133 u32 status;
134 /*
135 * Check if it is our interrupt
136 */
137 status = readl(&regs->outbound_intr_status);
138
139 if (status & 1) {
140 writel(status, &regs->outbound_intr_status);
141 readl(&regs->outbound_intr_status);
142 return 1;
143 }
144 if (!(status & MFI_FUSION_ENABLE_INTERRUPT_MASK))
145 return 0;
146
147 return 1;
148 }
149
150 /**
151 * megasas_get_cmd_fusion - Get a command from the free pool
152 * @instance: Adapter soft state
153 *
154 * Returns a free command from the pool
155 */
156 struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance
157 *instance)
158 {
159 unsigned long flags;
160 struct fusion_context *fusion =
161 (struct fusion_context *)instance->ctrl_context;
162 struct megasas_cmd_fusion *cmd = NULL;
163
164 spin_lock_irqsave(&fusion->cmd_pool_lock, flags);
165
166 if (!list_empty(&fusion->cmd_pool)) {
167 cmd = list_entry((&fusion->cmd_pool)->next,
168 struct megasas_cmd_fusion, list);
169 list_del_init(&cmd->list);
170 } else {
171 printk(KERN_ERR "megasas: Command pool (fusion) empty!\n");
172 }
173
174 spin_unlock_irqrestore(&fusion->cmd_pool_lock, flags);
175 return cmd;
176 }
177
178 /**
179 * megasas_return_cmd_fusion - Return a cmd to free command pool
180 * @instance: Adapter soft state
181 * @cmd: Command packet to be returned to free command pool
182 */
183 static inline void
184 megasas_return_cmd_fusion(struct megasas_instance *instance,
185 struct megasas_cmd_fusion *cmd)
186 {
187 unsigned long flags;
188 struct fusion_context *fusion =
189 (struct fusion_context *)instance->ctrl_context;
190
191 spin_lock_irqsave(&fusion->cmd_pool_lock, flags);
192
193 cmd->scmd = NULL;
194 cmd->sync_cmd_idx = (u32)ULONG_MAX;
195 list_add_tail(&cmd->list, &fusion->cmd_pool);
196
197 spin_unlock_irqrestore(&fusion->cmd_pool_lock, flags);
198 }
199
200 /**
201 * megasas_teardown_frame_pool_fusion - Destroy the cmd frame DMA pool
202 * @instance: Adapter soft state
203 */
204 static void megasas_teardown_frame_pool_fusion(
205 struct megasas_instance *instance)
206 {
207 int i;
208 struct fusion_context *fusion = instance->ctrl_context;
209
210 u16 max_cmd = instance->max_fw_cmds;
211
212 struct megasas_cmd_fusion *cmd;
213
214 if (!fusion->sg_dma_pool || !fusion->sense_dma_pool) {
215 printk(KERN_ERR "megasas: dma pool is null. SG Pool %p, "
216 "sense pool : %p\n", fusion->sg_dma_pool,
217 fusion->sense_dma_pool);
218 return;
219 }
220
221 /*
222 * Return all frames to pool
223 */
224 for (i = 0; i < max_cmd; i++) {
225
226 cmd = fusion->cmd_list[i];
227
228 if (cmd->sg_frame)
229 pci_pool_free(fusion->sg_dma_pool, cmd->sg_frame,
230 cmd->sg_frame_phys_addr);
231
232 if (cmd->sense)
233 pci_pool_free(fusion->sense_dma_pool, cmd->sense,
234 cmd->sense_phys_addr);
235 }
236
237 /*
238 * Now destroy the pool itself
239 */
240 pci_pool_destroy(fusion->sg_dma_pool);
241 pci_pool_destroy(fusion->sense_dma_pool);
242
243 fusion->sg_dma_pool = NULL;
244 fusion->sense_dma_pool = NULL;
245 }
246
247 /**
248 * megasas_free_cmds_fusion - Free all the cmds in the free cmd pool
249 * @instance: Adapter soft state
250 */
251 void
252 megasas_free_cmds_fusion(struct megasas_instance *instance)
253 {
254 int i;
255 struct fusion_context *fusion = instance->ctrl_context;
256
257 u32 max_cmds, req_sz, reply_sz, io_frames_sz;
258
259
260 req_sz = fusion->request_alloc_sz;
261 reply_sz = fusion->reply_alloc_sz;
262 io_frames_sz = fusion->io_frames_alloc_sz;
263
264 max_cmds = instance->max_fw_cmds;
265
266 /* Free descriptors and request Frames memory */
267 if (fusion->req_frames_desc)
268 dma_free_coherent(&instance->pdev->dev, req_sz,
269 fusion->req_frames_desc,
270 fusion->req_frames_desc_phys);
271
272 if (fusion->reply_frames_desc) {
273 pci_pool_free(fusion->reply_frames_desc_pool,
274 fusion->reply_frames_desc,
275 fusion->reply_frames_desc_phys);
276 pci_pool_destroy(fusion->reply_frames_desc_pool);
277 }
278
279 if (fusion->io_request_frames) {
280 pci_pool_free(fusion->io_request_frames_pool,
281 fusion->io_request_frames,
282 fusion->io_request_frames_phys);
283 pci_pool_destroy(fusion->io_request_frames_pool);
284 }
285
286 /* Free the Fusion frame pool */
287 megasas_teardown_frame_pool_fusion(instance);
288
289 /* Free all the commands in the cmd_list */
290 for (i = 0; i < max_cmds; i++)
291 kfree(fusion->cmd_list[i]);
292
293 /* Free the cmd_list buffer itself */
294 kfree(fusion->cmd_list);
295 fusion->cmd_list = NULL;
296
297 INIT_LIST_HEAD(&fusion->cmd_pool);
298 }
299
300 /**
301 * megasas_create_frame_pool_fusion - Creates DMA pool for cmd frames
302 * @instance: Adapter soft state
303 *
304 */
305 static int megasas_create_frame_pool_fusion(struct megasas_instance *instance)
306 {
307 int i;
308 u32 max_cmd;
309 struct fusion_context *fusion;
310 struct megasas_cmd_fusion *cmd;
311 u32 total_sz_chain_frame;
312
313 fusion = instance->ctrl_context;
314 max_cmd = instance->max_fw_cmds;
315
316 total_sz_chain_frame = MEGASAS_MAX_SZ_CHAIN_FRAME;
317
318 /*
319 * Use DMA pool facility provided by PCI layer
320 */
321
322 fusion->sg_dma_pool = pci_pool_create("megasas sg pool fusion",
323 instance->pdev,
324 total_sz_chain_frame, 4,
325 0);
326 if (!fusion->sg_dma_pool) {
327 printk(KERN_DEBUG "megasas: failed to setup request pool "
328 "fusion\n");
329 return -ENOMEM;
330 }
331 fusion->sense_dma_pool = pci_pool_create("megasas sense pool fusion",
332 instance->pdev,
333 SCSI_SENSE_BUFFERSIZE, 64, 0);
334
335 if (!fusion->sense_dma_pool) {
336 printk(KERN_DEBUG "megasas: failed to setup sense pool "
337 "fusion\n");
338 pci_pool_destroy(fusion->sg_dma_pool);
339 fusion->sg_dma_pool = NULL;
340 return -ENOMEM;
341 }
342
343 /*
344 * Allocate and attach a frame to each of the commands in cmd_list
345 */
346 for (i = 0; i < max_cmd; i++) {
347
348 cmd = fusion->cmd_list[i];
349
350 cmd->sg_frame = pci_pool_alloc(fusion->sg_dma_pool,
351 GFP_KERNEL,
352 &cmd->sg_frame_phys_addr);
353
354 cmd->sense = pci_pool_alloc(fusion->sense_dma_pool,
355 GFP_KERNEL, &cmd->sense_phys_addr);
356 /*
357 * megasas_teardown_frame_pool_fusion() takes care of freeing
358 * whatever has been allocated
359 */
360 if (!cmd->sg_frame || !cmd->sense) {
361 printk(KERN_DEBUG "megasas: pci_pool_alloc failed\n");
362 megasas_teardown_frame_pool_fusion(instance);
363 return -ENOMEM;
364 }
365 }
366 return 0;
367 }
368
369 /**
370 * megasas_alloc_cmds_fusion - Allocates the command packets
371 * @instance: Adapter soft state
372 *
373 *
374 * Each frame has a 32-bit field called context. This context is used to get
375 * back the megasas_cmd_fusion from the frame when a frame gets completed
376 * In this driver, the 32 bit values are the indices into an array cmd_list.
377 * This array is used only to look up the megasas_cmd_fusion given the context.
378 * The free commands themselves are maintained in a linked list called cmd_pool.
379 *
380 * cmds are formed in the io_request and sg_frame members of the
381 * megasas_cmd_fusion. The context field is used to get a request descriptor
382 * and is used as SMID of the cmd.
383 * SMID value range is from 1 to max_fw_cmds.
384 */
385 int
386 megasas_alloc_cmds_fusion(struct megasas_instance *instance)
387 {
388 int i, j, count;
389 u32 max_cmd, io_frames_sz;
390 struct fusion_context *fusion;
391 struct megasas_cmd_fusion *cmd;
392 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
393 u32 offset;
394 dma_addr_t io_req_base_phys;
395 u8 *io_req_base;
396
397 fusion = instance->ctrl_context;
398
399 max_cmd = instance->max_fw_cmds;
400
401 fusion->req_frames_desc =
402 dma_alloc_coherent(&instance->pdev->dev,
403 fusion->request_alloc_sz,
404 &fusion->req_frames_desc_phys, GFP_KERNEL);
405
406 if (!fusion->req_frames_desc) {
407 printk(KERN_ERR "megasas; Could not allocate memory for "
408 "request_frames\n");
409 goto fail_req_desc;
410 }
411
412 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
413 fusion->reply_frames_desc_pool =
414 pci_pool_create("reply_frames pool", instance->pdev,
415 fusion->reply_alloc_sz * count, 16, 0);
416
417 if (!fusion->reply_frames_desc_pool) {
418 printk(KERN_ERR "megasas; Could not allocate memory for "
419 "reply_frame pool\n");
420 goto fail_reply_desc;
421 }
422
423 fusion->reply_frames_desc =
424 pci_pool_alloc(fusion->reply_frames_desc_pool, GFP_KERNEL,
425 &fusion->reply_frames_desc_phys);
426 if (!fusion->reply_frames_desc) {
427 printk(KERN_ERR "megasas; Could not allocate memory for "
428 "reply_frame pool\n");
429 pci_pool_destroy(fusion->reply_frames_desc_pool);
430 goto fail_reply_desc;
431 }
432
433 reply_desc = fusion->reply_frames_desc;
434 for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++)
435 reply_desc->Words = ULLONG_MAX;
436
437 io_frames_sz = fusion->io_frames_alloc_sz;
438
439 fusion->io_request_frames_pool =
440 pci_pool_create("io_request_frames pool", instance->pdev,
441 fusion->io_frames_alloc_sz, 16, 0);
442
443 if (!fusion->io_request_frames_pool) {
444 printk(KERN_ERR "megasas: Could not allocate memory for "
445 "io_request_frame pool\n");
446 goto fail_io_frames;
447 }
448
449 fusion->io_request_frames =
450 pci_pool_alloc(fusion->io_request_frames_pool, GFP_KERNEL,
451 &fusion->io_request_frames_phys);
452 if (!fusion->io_request_frames) {
453 printk(KERN_ERR "megasas: Could not allocate memory for "
454 "io_request_frames frames\n");
455 pci_pool_destroy(fusion->io_request_frames_pool);
456 goto fail_io_frames;
457 }
458
459 /*
460 * fusion->cmd_list is an array of struct megasas_cmd_fusion pointers.
461 * Allocate the dynamic array first and then allocate individual
462 * commands.
463 */
464 fusion->cmd_list = kmalloc(sizeof(struct megasas_cmd_fusion *)
465 *max_cmd, GFP_KERNEL);
466
467 if (!fusion->cmd_list) {
468 printk(KERN_DEBUG "megasas: out of memory. Could not alloc "
469 "memory for cmd_list_fusion\n");
470 goto fail_cmd_list;
471 }
472
473 memset(fusion->cmd_list, 0, sizeof(struct megasas_cmd_fusion *)
474 *max_cmd);
475
476 max_cmd = instance->max_fw_cmds;
477 for (i = 0; i < max_cmd; i++) {
478 fusion->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd_fusion),
479 GFP_KERNEL);
480 if (!fusion->cmd_list[i]) {
481 printk(KERN_ERR "Could not alloc cmd list fusion\n");
482
483 for (j = 0; j < i; j++)
484 kfree(fusion->cmd_list[j]);
485
486 kfree(fusion->cmd_list);
487 fusion->cmd_list = NULL;
488 goto fail_cmd_list;
489 }
490 }
491
492 /* The first 256 bytes (SMID 0) is not used. Don't add to cmd list */
493 io_req_base = fusion->io_request_frames +
494 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
495 io_req_base_phys = fusion->io_request_frames_phys +
496 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
497
498 /*
499 * Add all the commands to command pool (fusion->cmd_pool)
500 */
501
502 /* SMID 0 is reserved. Set SMID/index from 1 */
503 for (i = 0; i < max_cmd; i++) {
504 cmd = fusion->cmd_list[i];
505 offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i;
506 memset(cmd, 0, sizeof(struct megasas_cmd_fusion));
507 cmd->index = i + 1;
508 cmd->scmd = NULL;
509 cmd->sync_cmd_idx = (u32)ULONG_MAX; /* Set to Invalid */
510 cmd->instance = instance;
511 cmd->io_request =
512 (struct MPI2_RAID_SCSI_IO_REQUEST *)
513 (io_req_base + offset);
514 memset(cmd->io_request, 0,
515 sizeof(struct MPI2_RAID_SCSI_IO_REQUEST));
516 cmd->io_request_phys_addr = io_req_base_phys + offset;
517
518 list_add_tail(&cmd->list, &fusion->cmd_pool);
519 }
520
521 /*
522 * Create a frame pool and assign one frame to each cmd
523 */
524 if (megasas_create_frame_pool_fusion(instance)) {
525 printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n");
526 megasas_free_cmds_fusion(instance);
527 goto fail_req_desc;
528 }
529
530 return 0;
531
532 fail_cmd_list:
533 pci_pool_free(fusion->io_request_frames_pool, fusion->io_request_frames,
534 fusion->io_request_frames_phys);
535 pci_pool_destroy(fusion->io_request_frames_pool);
536 fail_io_frames:
537 dma_free_coherent(&instance->pdev->dev, fusion->request_alloc_sz,
538 fusion->reply_frames_desc,
539 fusion->reply_frames_desc_phys);
540 pci_pool_free(fusion->reply_frames_desc_pool,
541 fusion->reply_frames_desc,
542 fusion->reply_frames_desc_phys);
543 pci_pool_destroy(fusion->reply_frames_desc_pool);
544
545 fail_reply_desc:
546 dma_free_coherent(&instance->pdev->dev, fusion->request_alloc_sz,
547 fusion->req_frames_desc,
548 fusion->req_frames_desc_phys);
549 fail_req_desc:
550 return -ENOMEM;
551 }
552
553 /**
554 * wait_and_poll - Issues a polling command
555 * @instance: Adapter soft state
556 * @cmd: Command packet to be issued
557 *
558 * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
559 */
560 int
561 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd)
562 {
563 int i;
564 struct megasas_header *frame_hdr = &cmd->frame->hdr;
565
566 u32 msecs = MFI_POLL_TIMEOUT_SECS * 1000;
567
568 /*
569 * Wait for cmd_status to change
570 */
571 for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) {
572 rmb();
573 msleep(20);
574 }
575
576 if (frame_hdr->cmd_status == 0xff)
577 return -ETIME;
578
579 return 0;
580 }
581
582 /**
583 * megasas_ioc_init_fusion - Initializes the FW
584 * @instance: Adapter soft state
585 *
586 * Issues the IOC Init cmd
587 */
588 int
589 megasas_ioc_init_fusion(struct megasas_instance *instance)
590 {
591 struct megasas_init_frame *init_frame;
592 struct MPI2_IOC_INIT_REQUEST *IOCInitMessage;
593 dma_addr_t ioc_init_handle;
594 struct megasas_cmd *cmd;
595 u8 ret;
596 struct fusion_context *fusion;
597 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
598 int i;
599 struct megasas_header *frame_hdr;
600
601 fusion = instance->ctrl_context;
602
603 cmd = megasas_get_cmd(instance);
604
605 if (!cmd) {
606 printk(KERN_ERR "Could not allocate cmd for INIT Frame\n");
607 ret = 1;
608 goto fail_get_cmd;
609 }
610
611 IOCInitMessage =
612 dma_alloc_coherent(&instance->pdev->dev,
613 sizeof(struct MPI2_IOC_INIT_REQUEST),
614 &ioc_init_handle, GFP_KERNEL);
615
616 if (!IOCInitMessage) {
617 printk(KERN_ERR "Could not allocate memory for "
618 "IOCInitMessage\n");
619 ret = 1;
620 goto fail_fw_init;
621 }
622
623 memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST));
624
625 IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT;
626 IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER;
627 IOCInitMessage->MsgVersion = MPI2_VERSION;
628 IOCInitMessage->HeaderVersion = MPI2_HEADER_VERSION;
629 IOCInitMessage->SystemRequestFrameSize =
630 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4;
631
632 IOCInitMessage->ReplyDescriptorPostQueueDepth = fusion->reply_q_depth;
633 IOCInitMessage->ReplyDescriptorPostQueueAddress =
634 fusion->reply_frames_desc_phys;
635 IOCInitMessage->SystemRequestFrameBaseAddress =
636 fusion->io_request_frames_phys;
637 IOCInitMessage->HostMSIxVectors = instance->msix_vectors;
638 init_frame = (struct megasas_init_frame *)cmd->frame;
639 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
640
641 frame_hdr = &cmd->frame->hdr;
642 frame_hdr->cmd_status = 0xFF;
643 frame_hdr->flags |= MFI_FRAME_DONT_POST_IN_REPLY_QUEUE;
644
645 init_frame->cmd = MFI_CMD_INIT;
646 init_frame->cmd_status = 0xFF;
647
648 init_frame->queue_info_new_phys_addr_lo = ioc_init_handle;
649 init_frame->data_xfer_len = sizeof(struct MPI2_IOC_INIT_REQUEST);
650
651 req_desc =
652 (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)fusion->req_frames_desc;
653
654 req_desc->Words = cmd->frame_phys_addr;
655 req_desc->MFAIo.RequestFlags =
656 (MEGASAS_REQ_DESCRIPT_FLAGS_MFA <<
657 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
658
659 /*
660 * disable the intr before firing the init frame
661 */
662 instance->instancet->disable_intr(instance->reg_set);
663
664 for (i = 0; i < (10 * 1000); i += 20) {
665 if (readl(&instance->reg_set->doorbell) & 1)
666 msleep(20);
667 else
668 break;
669 }
670
671 instance->instancet->fire_cmd(instance, req_desc->u.low,
672 req_desc->u.high, instance->reg_set);
673
674 wait_and_poll(instance, cmd);
675
676 frame_hdr = &cmd->frame->hdr;
677 if (frame_hdr->cmd_status != 0) {
678 ret = 1;
679 goto fail_fw_init;
680 }
681 printk(KERN_ERR "megasas:IOC Init cmd success\n");
682
683 ret = 0;
684
685 fail_fw_init:
686 megasas_return_cmd(instance, cmd);
687 if (IOCInitMessage)
688 dma_free_coherent(&instance->pdev->dev,
689 sizeof(struct MPI2_IOC_INIT_REQUEST),
690 IOCInitMessage, ioc_init_handle);
691 fail_get_cmd:
692 return ret;
693 }
694
695 /*
696 * megasas_get_ld_map_info - Returns FW's ld_map structure
697 * @instance: Adapter soft state
698 * @pend: Pend the command or not
699 * Issues an internal command (DCMD) to get the FW's controller PD
700 * list structure. This information is mainly used to find out SYSTEM
701 * supported by the FW.
702 */
703 static int
704 megasas_get_ld_map_info(struct megasas_instance *instance)
705 {
706 int ret = 0;
707 struct megasas_cmd *cmd;
708 struct megasas_dcmd_frame *dcmd;
709 struct MR_FW_RAID_MAP_ALL *ci;
710 dma_addr_t ci_h = 0;
711 u32 size_map_info;
712 struct fusion_context *fusion;
713
714 cmd = megasas_get_cmd(instance);
715
716 if (!cmd) {
717 printk(KERN_DEBUG "megasas: Failed to get cmd for map info.\n");
718 return -ENOMEM;
719 }
720
721 fusion = instance->ctrl_context;
722
723 if (!fusion) {
724 megasas_return_cmd(instance, cmd);
725 return 1;
726 }
727
728 dcmd = &cmd->frame->dcmd;
729
730 size_map_info = sizeof(struct MR_FW_RAID_MAP) +
731 (sizeof(struct MR_LD_SPAN_MAP) *(MAX_LOGICAL_DRIVES - 1));
732
733 ci = fusion->ld_map[(instance->map_id & 1)];
734 ci_h = fusion->ld_map_phys[(instance->map_id & 1)];
735
736 if (!ci) {
737 printk(KERN_DEBUG "Failed to alloc mem for ld_map_info\n");
738 megasas_return_cmd(instance, cmd);
739 return -ENOMEM;
740 }
741
742 memset(ci, 0, sizeof(*ci));
743 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
744
745 dcmd->cmd = MFI_CMD_DCMD;
746 dcmd->cmd_status = 0xFF;
747 dcmd->sge_count = 1;
748 dcmd->flags = MFI_FRAME_DIR_READ;
749 dcmd->timeout = 0;
750 dcmd->pad_0 = 0;
751 dcmd->data_xfer_len = size_map_info;
752 dcmd->opcode = MR_DCMD_LD_MAP_GET_INFO;
753 dcmd->sgl.sge32[0].phys_addr = ci_h;
754 dcmd->sgl.sge32[0].length = size_map_info;
755
756 if (!megasas_issue_polled(instance, cmd))
757 ret = 0;
758 else {
759 printk(KERN_ERR "megasas: Get LD Map Info Failed\n");
760 ret = -1;
761 }
762
763 megasas_return_cmd(instance, cmd);
764
765 return ret;
766 }
767
768 u8
769 megasas_get_map_info(struct megasas_instance *instance)
770 {
771 struct fusion_context *fusion = instance->ctrl_context;
772
773 fusion->fast_path_io = 0;
774 if (!megasas_get_ld_map_info(instance)) {
775 if (MR_ValidateMapInfo(fusion->ld_map[(instance->map_id & 1)],
776 fusion->load_balance_info)) {
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 = 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 = MFI_FRAME_DIR_WRITE;
853 dcmd->timeout = 0;
854 dcmd->pad_0 = 0;
855 dcmd->data_xfer_len = size_map_info;
856 dcmd->mbox.b[0] = num_lds;
857 dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG;
858 dcmd->opcode = MR_DCMD_LD_MAP_GET_INFO;
859 dcmd->sgl.sge32[0].phys_addr = ci_h;
860 dcmd->sgl.sge32[0].length = 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 * megasas_init_adapter_fusion - Initializes the FW
871 * @instance: Adapter soft state
872 *
873 * This is the main function for initializing firmware.
874 */
875 u32
876 megasas_init_adapter_fusion(struct megasas_instance *instance)
877 {
878 struct megasas_register_set __iomem *reg_set;
879 struct fusion_context *fusion;
880 u32 max_cmd;
881 int i = 0, count;
882
883 fusion = instance->ctrl_context;
884
885 reg_set = instance->reg_set;
886
887 /*
888 * Get various operational parameters from status register
889 */
890 instance->max_fw_cmds =
891 instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
892 instance->max_fw_cmds = min(instance->max_fw_cmds, (u16)1008);
893
894 /*
895 * Reduce the max supported cmds by 1. This is to ensure that the
896 * reply_q_sz (1 more than the max cmd that driver may send)
897 * does not exceed max cmds that the FW can support
898 */
899 instance->max_fw_cmds = instance->max_fw_cmds-1;
900 /* Only internal cmds (DCMD) need to have MFI frames */
901 instance->max_mfi_cmds = MEGASAS_INT_CMDS;
902
903 max_cmd = instance->max_fw_cmds;
904
905 fusion->reply_q_depth = ((max_cmd + 1 + 15)/16)*16;
906
907 fusion->request_alloc_sz =
908 sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *max_cmd;
909 fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION)
910 *(fusion->reply_q_depth);
911 fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE +
912 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE *
913 (max_cmd + 1)); /* Extra 1 for SMID 0 */
914
915 fusion->max_sge_in_main_msg =
916 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
917 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16;
918
919 fusion->max_sge_in_chain =
920 MEGASAS_MAX_SZ_CHAIN_FRAME / sizeof(union MPI2_SGE_IO_UNION);
921
922 instance->max_num_sge = fusion->max_sge_in_main_msg +
923 fusion->max_sge_in_chain - 2;
924
925 /* Used for pass thru MFI frame (DCMD) */
926 fusion->chain_offset_mfi_pthru =
927 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16;
928
929 fusion->chain_offset_io_request =
930 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
931 sizeof(union MPI2_SGE_IO_UNION))/16;
932
933 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
934 for (i = 0 ; i < count; i++)
935 fusion->last_reply_idx[i] = 0;
936
937 /*
938 * Allocate memory for descriptors
939 * Create a pool of commands
940 */
941 if (megasas_alloc_cmds(instance))
942 goto fail_alloc_mfi_cmds;
943 if (megasas_alloc_cmds_fusion(instance))
944 goto fail_alloc_cmds;
945
946 if (megasas_ioc_init_fusion(instance))
947 goto fail_ioc_init;
948
949 instance->flag_ieee = 1;
950
951 fusion->map_sz = sizeof(struct MR_FW_RAID_MAP) +
952 (sizeof(struct MR_LD_SPAN_MAP) *(MAX_LOGICAL_DRIVES - 1));
953
954 fusion->fast_path_io = 0;
955
956 for (i = 0; i < 2; i++) {
957 fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev,
958 fusion->map_sz,
959 &fusion->ld_map_phys[i],
960 GFP_KERNEL);
961 if (!fusion->ld_map[i]) {
962 printk(KERN_ERR "megasas: Could not allocate memory "
963 "for map info\n");
964 goto fail_map_info;
965 }
966 }
967
968 if (!megasas_get_map_info(instance))
969 megasas_sync_map_info(instance);
970
971 return 0;
972
973 fail_map_info:
974 if (i == 1)
975 dma_free_coherent(&instance->pdev->dev, fusion->map_sz,
976 fusion->ld_map[0], fusion->ld_map_phys[0]);
977 fail_ioc_init:
978 megasas_free_cmds_fusion(instance);
979 fail_alloc_cmds:
980 megasas_free_cmds(instance);
981 fail_alloc_mfi_cmds:
982 return 1;
983 }
984
985 /**
986 * megasas_fire_cmd_fusion - Sends command to the FW
987 * @frame_phys_addr : Physical address of cmd
988 * @frame_count : Number of frames for the command
989 * @regs : MFI register set
990 */
991 void
992 megasas_fire_cmd_fusion(struct megasas_instance *instance,
993 dma_addr_t req_desc_lo,
994 u32 req_desc_hi,
995 struct megasas_register_set __iomem *regs)
996 {
997 unsigned long flags;
998
999 spin_lock_irqsave(&instance->hba_lock, flags);
1000
1001 writel(req_desc_lo,
1002 &(regs)->inbound_low_queue_port);
1003 writel(req_desc_hi, &(regs)->inbound_high_queue_port);
1004 spin_unlock_irqrestore(&instance->hba_lock, flags);
1005 }
1006
1007 /**
1008 * map_cmd_status - Maps FW cmd status to OS cmd status
1009 * @cmd : Pointer to cmd
1010 * @status : status of cmd returned by FW
1011 * @ext_status : ext status of cmd returned by FW
1012 */
1013
1014 void
1015 map_cmd_status(struct megasas_cmd_fusion *cmd, u8 status, u8 ext_status)
1016 {
1017
1018 switch (status) {
1019
1020 case MFI_STAT_OK:
1021 cmd->scmd->result = DID_OK << 16;
1022 break;
1023
1024 case MFI_STAT_SCSI_IO_FAILED:
1025 case MFI_STAT_LD_INIT_IN_PROGRESS:
1026 cmd->scmd->result = (DID_ERROR << 16) | ext_status;
1027 break;
1028
1029 case MFI_STAT_SCSI_DONE_WITH_ERROR:
1030
1031 cmd->scmd->result = (DID_OK << 16) | ext_status;
1032 if (ext_status == SAM_STAT_CHECK_CONDITION) {
1033 memset(cmd->scmd->sense_buffer, 0,
1034 SCSI_SENSE_BUFFERSIZE);
1035 memcpy(cmd->scmd->sense_buffer, cmd->sense,
1036 SCSI_SENSE_BUFFERSIZE);
1037 cmd->scmd->result |= DRIVER_SENSE << 24;
1038 }
1039 break;
1040
1041 case MFI_STAT_LD_OFFLINE:
1042 case MFI_STAT_DEVICE_NOT_FOUND:
1043 cmd->scmd->result = DID_BAD_TARGET << 16;
1044 break;
1045 case MFI_STAT_CONFIG_SEQ_MISMATCH:
1046 cmd->scmd->result = DID_IMM_RETRY << 16;
1047 break;
1048 default:
1049 printk(KERN_DEBUG "megasas: FW status %#x\n", status);
1050 cmd->scmd->result = DID_ERROR << 16;
1051 break;
1052 }
1053 }
1054
1055 /**
1056 * megasas_make_sgl_fusion - Prepares 32-bit SGL
1057 * @instance: Adapter soft state
1058 * @scp: SCSI command from the mid-layer
1059 * @sgl_ptr: SGL to be filled in
1060 * @cmd: cmd we are working on
1061 *
1062 * If successful, this function returns the number of SG elements.
1063 */
1064 static int
1065 megasas_make_sgl_fusion(struct megasas_instance *instance,
1066 struct scsi_cmnd *scp,
1067 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
1068 struct megasas_cmd_fusion *cmd)
1069 {
1070 int i, sg_processed, sge_count;
1071 struct scatterlist *os_sgl;
1072 struct fusion_context *fusion;
1073
1074 fusion = instance->ctrl_context;
1075
1076 if (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) {
1077 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr;
1078 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
1079 sgl_ptr_end->Flags = 0;
1080 }
1081
1082 sge_count = scsi_dma_map(scp);
1083
1084 BUG_ON(sge_count < 0);
1085
1086 if (sge_count > instance->max_num_sge || !sge_count)
1087 return sge_count;
1088
1089 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1090 sgl_ptr->Length = sg_dma_len(os_sgl);
1091 sgl_ptr->Address = sg_dma_address(os_sgl);
1092 sgl_ptr->Flags = 0;
1093 if (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) {
1094 if (i == sge_count - 1)
1095 sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST;
1096 }
1097 sgl_ptr++;
1098
1099 sg_processed = i + 1;
1100
1101 if ((sg_processed == (fusion->max_sge_in_main_msg - 1)) &&
1102 (sge_count > fusion->max_sge_in_main_msg)) {
1103
1104 struct MPI25_IEEE_SGE_CHAIN64 *sg_chain;
1105 if (instance->pdev->device ==
1106 PCI_DEVICE_ID_LSI_INVADER) {
1107 if ((cmd->io_request->IoFlags &
1108 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) !=
1109 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH)
1110 cmd->io_request->ChainOffset =
1111 fusion->
1112 chain_offset_io_request;
1113 else
1114 cmd->io_request->ChainOffset = 0;
1115 } else
1116 cmd->io_request->ChainOffset =
1117 fusion->chain_offset_io_request;
1118
1119 sg_chain = sgl_ptr;
1120 /* Prepare chain element */
1121 sg_chain->NextChainOffset = 0;
1122 if (instance->pdev->device ==
1123 PCI_DEVICE_ID_LSI_INVADER)
1124 sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT;
1125 else
1126 sg_chain->Flags =
1127 (IEEE_SGE_FLAGS_CHAIN_ELEMENT |
1128 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR);
1129 sg_chain->Length = (sizeof(union MPI2_SGE_IO_UNION)
1130 *(sge_count - sg_processed));
1131 sg_chain->Address = cmd->sg_frame_phys_addr;
1132
1133 sgl_ptr =
1134 (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame;
1135 }
1136 }
1137
1138 return sge_count;
1139 }
1140
1141 /**
1142 * megasas_set_pd_lba - Sets PD LBA
1143 * @cdb: CDB
1144 * @cdb_len: cdb length
1145 * @start_blk: Start block of IO
1146 *
1147 * Used to set the PD LBA in CDB for FP IOs
1148 */
1149 void
1150 megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len,
1151 struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp,
1152 struct MR_FW_RAID_MAP_ALL *local_map_ptr, u32 ref_tag)
1153 {
1154 struct MR_LD_RAID *raid;
1155 u32 ld;
1156 u64 start_blk = io_info->pdBlock;
1157 u8 *cdb = io_request->CDB.CDB32;
1158 u32 num_blocks = io_info->numBlocks;
1159 u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0;
1160
1161 /* Check if T10 PI (DIF) is enabled for this LD */
1162 ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr);
1163 raid = MR_LdRaidGet(ld, local_map_ptr);
1164 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) {
1165 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
1166 cdb[0] = MEGASAS_SCSI_VARIABLE_LENGTH_CMD;
1167 cdb[7] = MEGASAS_SCSI_ADDL_CDB_LEN;
1168
1169 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1170 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32;
1171 else
1172 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32;
1173 cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL;
1174
1175 /* LBA */
1176 cdb[12] = (u8)((start_blk >> 56) & 0xff);
1177 cdb[13] = (u8)((start_blk >> 48) & 0xff);
1178 cdb[14] = (u8)((start_blk >> 40) & 0xff);
1179 cdb[15] = (u8)((start_blk >> 32) & 0xff);
1180 cdb[16] = (u8)((start_blk >> 24) & 0xff);
1181 cdb[17] = (u8)((start_blk >> 16) & 0xff);
1182 cdb[18] = (u8)((start_blk >> 8) & 0xff);
1183 cdb[19] = (u8)(start_blk & 0xff);
1184
1185 /* Logical block reference tag */
1186 io_request->CDB.EEDP32.PrimaryReferenceTag =
1187 cpu_to_be32(ref_tag);
1188 io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0xffff;
1189
1190 io_request->DataLength = num_blocks * 512;
1191 io_request->IoFlags = 32; /* Specify 32-byte cdb */
1192
1193 /* Transfer length */
1194 cdb[28] = (u8)((num_blocks >> 24) & 0xff);
1195 cdb[29] = (u8)((num_blocks >> 16) & 0xff);
1196 cdb[30] = (u8)((num_blocks >> 8) & 0xff);
1197 cdb[31] = (u8)(num_blocks & 0xff);
1198
1199 /* set SCSI IO EEDPFlags */
1200 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) {
1201 io_request->EEDPFlags =
1202 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
1203 MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
1204 MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP |
1205 MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG |
1206 MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD;
1207 } else {
1208 io_request->EEDPFlags =
1209 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
1210 MPI2_SCSIIO_EEDPFLAGS_INSERT_OP;
1211 }
1212 io_request->Control |= (0x4 << 26);
1213 io_request->EEDPBlockSize = MEGASAS_EEDPBLOCKSIZE;
1214 } else {
1215 /* Some drives don't support 16/12 byte CDB's, convert to 10 */
1216 if (((cdb_len == 12) || (cdb_len == 16)) &&
1217 (start_blk <= 0xffffffff)) {
1218 if (cdb_len == 16) {
1219 opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10;
1220 flagvals = cdb[1];
1221 groupnum = cdb[14];
1222 control = cdb[15];
1223 } else {
1224 opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10;
1225 flagvals = cdb[1];
1226 groupnum = cdb[10];
1227 control = cdb[11];
1228 }
1229
1230 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
1231
1232 cdb[0] = opcode;
1233 cdb[1] = flagvals;
1234 cdb[6] = groupnum;
1235 cdb[9] = control;
1236
1237 /* Transfer length */
1238 cdb[8] = (u8)(num_blocks & 0xff);
1239 cdb[7] = (u8)((num_blocks >> 8) & 0xff);
1240
1241 io_request->IoFlags = 10; /* Specify 10-byte cdb */
1242 cdb_len = 10;
1243 } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) {
1244 /* Convert to 16 byte CDB for large LBA's */
1245 switch (cdb_len) {
1246 case 6:
1247 opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16;
1248 control = cdb[5];
1249 break;
1250 case 10:
1251 opcode =
1252 cdb[0] == READ_10 ? READ_16 : WRITE_16;
1253 flagvals = cdb[1];
1254 groupnum = cdb[6];
1255 control = cdb[9];
1256 break;
1257 case 12:
1258 opcode =
1259 cdb[0] == READ_12 ? READ_16 : WRITE_16;
1260 flagvals = cdb[1];
1261 groupnum = cdb[10];
1262 control = cdb[11];
1263 break;
1264 }
1265
1266 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
1267
1268 cdb[0] = opcode;
1269 cdb[1] = flagvals;
1270 cdb[14] = groupnum;
1271 cdb[15] = control;
1272
1273 /* Transfer length */
1274 cdb[13] = (u8)(num_blocks & 0xff);
1275 cdb[12] = (u8)((num_blocks >> 8) & 0xff);
1276 cdb[11] = (u8)((num_blocks >> 16) & 0xff);
1277 cdb[10] = (u8)((num_blocks >> 24) & 0xff);
1278
1279 io_request->IoFlags = 16; /* Specify 16-byte cdb */
1280 cdb_len = 16;
1281 }
1282
1283 /* Normal case, just load LBA here */
1284 switch (cdb_len) {
1285 case 6:
1286 {
1287 u8 val = cdb[1] & 0xE0;
1288 cdb[3] = (u8)(start_blk & 0xff);
1289 cdb[2] = (u8)((start_blk >> 8) & 0xff);
1290 cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f);
1291 break;
1292 }
1293 case 10:
1294 cdb[5] = (u8)(start_blk & 0xff);
1295 cdb[4] = (u8)((start_blk >> 8) & 0xff);
1296 cdb[3] = (u8)((start_blk >> 16) & 0xff);
1297 cdb[2] = (u8)((start_blk >> 24) & 0xff);
1298 break;
1299 case 12:
1300 cdb[5] = (u8)(start_blk & 0xff);
1301 cdb[4] = (u8)((start_blk >> 8) & 0xff);
1302 cdb[3] = (u8)((start_blk >> 16) & 0xff);
1303 cdb[2] = (u8)((start_blk >> 24) & 0xff);
1304 break;
1305 case 16:
1306 cdb[9] = (u8)(start_blk & 0xff);
1307 cdb[8] = (u8)((start_blk >> 8) & 0xff);
1308 cdb[7] = (u8)((start_blk >> 16) & 0xff);
1309 cdb[6] = (u8)((start_blk >> 24) & 0xff);
1310 cdb[5] = (u8)((start_blk >> 32) & 0xff);
1311 cdb[4] = (u8)((start_blk >> 40) & 0xff);
1312 cdb[3] = (u8)((start_blk >> 48) & 0xff);
1313 cdb[2] = (u8)((start_blk >> 56) & 0xff);
1314 break;
1315 }
1316 }
1317 }
1318
1319 /**
1320 * megasas_build_ldio_fusion - Prepares IOs to devices
1321 * @instance: Adapter soft state
1322 * @scp: SCSI command
1323 * @cmd: Command to be prepared
1324 *
1325 * Prepares the io_request and chain elements (sg_frame) for IO
1326 * The IO can be for PD (Fast Path) or LD
1327 */
1328 void
1329 megasas_build_ldio_fusion(struct megasas_instance *instance,
1330 struct scsi_cmnd *scp,
1331 struct megasas_cmd_fusion *cmd)
1332 {
1333 u8 fp_possible;
1334 u32 start_lba_lo, start_lba_hi, device_id;
1335 struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
1336 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
1337 struct IO_REQUEST_INFO io_info;
1338 struct fusion_context *fusion;
1339 struct MR_FW_RAID_MAP_ALL *local_map_ptr;
1340
1341 device_id = MEGASAS_DEV_INDEX(instance, scp);
1342
1343 fusion = instance->ctrl_context;
1344
1345 io_request = cmd->io_request;
1346 io_request->RaidContext.VirtualDiskTgtId = device_id;
1347 io_request->RaidContext.status = 0;
1348 io_request->RaidContext.exStatus = 0;
1349
1350 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
1351
1352 start_lba_lo = 0;
1353 start_lba_hi = 0;
1354 fp_possible = 0;
1355
1356 /*
1357 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1358 */
1359 if (scp->cmd_len == 6) {
1360 io_request->DataLength = (u32) scp->cmnd[4];
1361 start_lba_lo = ((u32) scp->cmnd[1] << 16) |
1362 ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
1363
1364 start_lba_lo &= 0x1FFFFF;
1365 }
1366
1367 /*
1368 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1369 */
1370 else if (scp->cmd_len == 10) {
1371 io_request->DataLength = (u32) scp->cmnd[8] |
1372 ((u32) scp->cmnd[7] << 8);
1373 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1374 ((u32) scp->cmnd[3] << 16) |
1375 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1376 }
1377
1378 /*
1379 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1380 */
1381 else if (scp->cmd_len == 12) {
1382 io_request->DataLength = ((u32) scp->cmnd[6] << 24) |
1383 ((u32) scp->cmnd[7] << 16) |
1384 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1385 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1386 ((u32) scp->cmnd[3] << 16) |
1387 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1388 }
1389
1390 /*
1391 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1392 */
1393 else if (scp->cmd_len == 16) {
1394 io_request->DataLength = ((u32) scp->cmnd[10] << 24) |
1395 ((u32) scp->cmnd[11] << 16) |
1396 ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
1397 start_lba_lo = ((u32) scp->cmnd[6] << 24) |
1398 ((u32) scp->cmnd[7] << 16) |
1399 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1400
1401 start_lba_hi = ((u32) scp->cmnd[2] << 24) |
1402 ((u32) scp->cmnd[3] << 16) |
1403 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1404 }
1405
1406 memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO));
1407 io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo;
1408 io_info.numBlocks = io_request->DataLength;
1409 io_info.ldTgtId = device_id;
1410
1411 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1412 io_info.isRead = 1;
1413
1414 local_map_ptr = fusion->ld_map[(instance->map_id & 1)];
1415
1416 if ((MR_TargetIdToLdGet(device_id, local_map_ptr) >=
1417 MAX_LOGICAL_DRIVES) || (!fusion->fast_path_io)) {
1418 io_request->RaidContext.regLockFlags = 0;
1419 fp_possible = 0;
1420 } else {
1421 if (MR_BuildRaidContext(instance, &io_info,
1422 &io_request->RaidContext,
1423 local_map_ptr))
1424 fp_possible = io_info.fpOkForIo;
1425 }
1426
1427 /* Use smp_processor_id() for now until cmd->request->cpu is CPU
1428 id by default, not CPU group id, otherwise all MSI-X queues won't
1429 be utilized */
1430 cmd->request_desc->SCSIIO.MSIxIndex = instance->msix_vectors ?
1431 smp_processor_id() % instance->msix_vectors : 0;
1432
1433 if (fp_possible) {
1434 megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp,
1435 local_map_ptr, start_lba_lo);
1436 io_request->DataLength = scsi_bufflen(scp);
1437 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
1438 cmd->request_desc->SCSIIO.RequestFlags =
1439 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY
1440 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1441 if (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) {
1442 if (io_request->RaidContext.regLockFlags ==
1443 REGION_TYPE_UNUSED)
1444 cmd->request_desc->SCSIIO.RequestFlags =
1445 (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
1446 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1447 io_request->RaidContext.Type = MPI2_TYPE_CUDA;
1448 io_request->RaidContext.nseg = 0x1;
1449 io_request->IoFlags |=
1450 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH;
1451 io_request->RaidContext.regLockFlags |=
1452 (MR_RL_FLAGS_GRANT_DESTINATION_CUDA |
1453 MR_RL_FLAGS_SEQ_NUM_ENABLE);
1454 }
1455 if ((fusion->load_balance_info[device_id].loadBalanceFlag) &&
1456 (io_info.isRead)) {
1457 io_info.devHandle =
1458 get_updated_dev_handle(
1459 &fusion->load_balance_info[device_id],
1460 &io_info);
1461 scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG;
1462 } else
1463 scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
1464 cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle;
1465 io_request->DevHandle = io_info.devHandle;
1466 } else {
1467 io_request->RaidContext.timeoutValue =
1468 local_map_ptr->raidMap.fpPdIoTimeoutSec;
1469 cmd->request_desc->SCSIIO.RequestFlags =
1470 (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO
1471 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1472 if (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) {
1473 if (io_request->RaidContext.regLockFlags ==
1474 REGION_TYPE_UNUSED)
1475 cmd->request_desc->SCSIIO.RequestFlags =
1476 (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
1477 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1478 io_request->RaidContext.Type = MPI2_TYPE_CUDA;
1479 io_request->RaidContext.regLockFlags |=
1480 (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 |
1481 MR_RL_FLAGS_SEQ_NUM_ENABLE);
1482 io_request->RaidContext.nseg = 0x1;
1483 }
1484 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
1485 io_request->DevHandle = device_id;
1486 } /* Not FP */
1487 }
1488
1489 /**
1490 * megasas_build_dcdb_fusion - Prepares IOs to devices
1491 * @instance: Adapter soft state
1492 * @scp: SCSI command
1493 * @cmd: Command to be prepared
1494 *
1495 * Prepares the io_request frame for non-io cmds
1496 */
1497 static void
1498 megasas_build_dcdb_fusion(struct megasas_instance *instance,
1499 struct scsi_cmnd *scmd,
1500 struct megasas_cmd_fusion *cmd)
1501 {
1502 u32 device_id;
1503 struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
1504 u16 pd_index = 0;
1505 struct MR_FW_RAID_MAP_ALL *local_map_ptr;
1506 struct fusion_context *fusion = instance->ctrl_context;
1507
1508 io_request = cmd->io_request;
1509 device_id = MEGASAS_DEV_INDEX(instance, scmd);
1510 pd_index = (scmd->device->channel * MEGASAS_MAX_DEV_PER_CHANNEL)
1511 +scmd->device->id;
1512 local_map_ptr = fusion->ld_map[(instance->map_id & 1)];
1513
1514 /* Check if this is a system PD I/O */
1515 if (instance->pd_list[pd_index].driveState == MR_PD_STATE_SYSTEM) {
1516 io_request->Function = 0;
1517 io_request->DevHandle =
1518 local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
1519 io_request->RaidContext.timeoutValue =
1520 local_map_ptr->raidMap.fpPdIoTimeoutSec;
1521 io_request->RaidContext.regLockFlags = 0;
1522 io_request->RaidContext.regLockRowLBA = 0;
1523 io_request->RaidContext.regLockLength = 0;
1524 io_request->RaidContext.RAIDFlags =
1525 MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD <<
1526 MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT;
1527 cmd->request_desc->SCSIIO.RequestFlags =
1528 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
1529 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1530 } else {
1531 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
1532 io_request->DevHandle = device_id;
1533 cmd->request_desc->SCSIIO.RequestFlags =
1534 (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
1535 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1536 }
1537 io_request->RaidContext.VirtualDiskTgtId = device_id;
1538 io_request->LUN[1] = scmd->device->lun;
1539 io_request->DataLength = scsi_bufflen(scmd);
1540 }
1541
1542 /**
1543 * megasas_build_io_fusion - Prepares IOs to devices
1544 * @instance: Adapter soft state
1545 * @scp: SCSI command
1546 * @cmd: Command to be prepared
1547 *
1548 * Invokes helper functions to prepare request frames
1549 * and sets flags appropriate for IO/Non-IO cmd
1550 */
1551 int
1552 megasas_build_io_fusion(struct megasas_instance *instance,
1553 struct scsi_cmnd *scp,
1554 struct megasas_cmd_fusion *cmd)
1555 {
1556 u32 device_id, sge_count;
1557 struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request;
1558
1559 device_id = MEGASAS_DEV_INDEX(instance, scp);
1560
1561 /* Zero out some fields so they don't get reused */
1562 io_request->LUN[1] = 0;
1563 io_request->CDB.EEDP32.PrimaryReferenceTag = 0;
1564 io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0;
1565 io_request->EEDPFlags = 0;
1566 io_request->Control = 0;
1567 io_request->EEDPBlockSize = 0;
1568 io_request->ChainOffset = 0;
1569 io_request->RaidContext.RAIDFlags = 0;
1570 io_request->RaidContext.Type = 0;
1571 io_request->RaidContext.nseg = 0;
1572
1573 memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len);
1574 /*
1575 * Just the CDB length,rest of the Flags are zero
1576 * This will be modified for FP in build_ldio_fusion
1577 */
1578 io_request->IoFlags = scp->cmd_len;
1579
1580 if (megasas_is_ldio(scp))
1581 megasas_build_ldio_fusion(instance, scp, cmd);
1582 else
1583 megasas_build_dcdb_fusion(instance, scp, cmd);
1584
1585 /*
1586 * Construct SGL
1587 */
1588
1589 sge_count =
1590 megasas_make_sgl_fusion(instance, scp,
1591 (struct MPI25_IEEE_SGE_CHAIN64 *)
1592 &io_request->SGL, cmd);
1593
1594 if (sge_count > instance->max_num_sge) {
1595 printk(KERN_ERR "megasas: Error. sge_count (0x%x) exceeds "
1596 "max (0x%x) allowed\n", sge_count,
1597 instance->max_num_sge);
1598 return 1;
1599 }
1600
1601 io_request->RaidContext.numSGE = sge_count;
1602
1603 io_request->SGLFlags = MPI2_SGE_FLAGS_64_BIT_ADDRESSING;
1604
1605 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1606 io_request->Control |= MPI2_SCSIIO_CONTROL_WRITE;
1607 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1608 io_request->Control |= MPI2_SCSIIO_CONTROL_READ;
1609
1610 io_request->SGLOffset0 =
1611 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4;
1612
1613 io_request->SenseBufferLowAddress = cmd->sense_phys_addr;
1614 io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
1615
1616 cmd->scmd = scp;
1617 scp->SCp.ptr = (char *)cmd;
1618
1619 return 0;
1620 }
1621
1622 union MEGASAS_REQUEST_DESCRIPTOR_UNION *
1623 megasas_get_request_descriptor(struct megasas_instance *instance, u16 index)
1624 {
1625 u8 *p;
1626 struct fusion_context *fusion;
1627
1628 if (index >= instance->max_fw_cmds) {
1629 printk(KERN_ERR "megasas: Invalid SMID (0x%x)request for "
1630 "descriptor\n", index);
1631 return NULL;
1632 }
1633 fusion = instance->ctrl_context;
1634 p = fusion->req_frames_desc
1635 +sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *index;
1636
1637 return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p;
1638 }
1639
1640 /**
1641 * megasas_build_and_issue_cmd_fusion -Main routine for building and
1642 * issuing non IOCTL cmd
1643 * @instance: Adapter soft state
1644 * @scmd: pointer to scsi cmd from OS
1645 */
1646 static u32
1647 megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance,
1648 struct scsi_cmnd *scmd)
1649 {
1650 struct megasas_cmd_fusion *cmd;
1651 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
1652 u32 index;
1653 struct fusion_context *fusion;
1654
1655 fusion = instance->ctrl_context;
1656
1657 cmd = megasas_get_cmd_fusion(instance);
1658 if (!cmd)
1659 return SCSI_MLQUEUE_HOST_BUSY;
1660
1661 index = cmd->index;
1662
1663 req_desc = megasas_get_request_descriptor(instance, index-1);
1664 if (!req_desc)
1665 return 1;
1666
1667 req_desc->Words = 0;
1668 cmd->request_desc = req_desc;
1669
1670 if (megasas_build_io_fusion(instance, scmd, cmd)) {
1671 megasas_return_cmd_fusion(instance, cmd);
1672 printk(KERN_ERR "megasas: Error building command.\n");
1673 cmd->request_desc = NULL;
1674 return 1;
1675 }
1676
1677 req_desc = cmd->request_desc;
1678 req_desc->SCSIIO.SMID = index;
1679
1680 if (cmd->io_request->ChainOffset != 0 &&
1681 cmd->io_request->ChainOffset != 0xF)
1682 printk(KERN_ERR "megasas: The chain offset value is not "
1683 "correct : %x\n", cmd->io_request->ChainOffset);
1684
1685 /*
1686 * Issue the command to the FW
1687 */
1688 atomic_inc(&instance->fw_outstanding);
1689
1690 instance->instancet->fire_cmd(instance,
1691 req_desc->u.low, req_desc->u.high,
1692 instance->reg_set);
1693
1694 return 0;
1695 }
1696
1697 /**
1698 * complete_cmd_fusion - Completes command
1699 * @instance: Adapter soft state
1700 * Completes all commands that is in reply descriptor queue
1701 */
1702 int
1703 complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex)
1704 {
1705 union MPI2_REPLY_DESCRIPTORS_UNION *desc;
1706 struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc;
1707 struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req;
1708 struct fusion_context *fusion;
1709 struct megasas_cmd *cmd_mfi;
1710 struct megasas_cmd_fusion *cmd_fusion;
1711 u16 smid, num_completed;
1712 u8 reply_descript_type, arm;
1713 u32 status, extStatus, device_id;
1714 union desc_value d_val;
1715 struct LD_LOAD_BALANCE_INFO *lbinfo;
1716
1717 fusion = instance->ctrl_context;
1718
1719 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
1720 return IRQ_HANDLED;
1721
1722 desc = fusion->reply_frames_desc;
1723 desc += ((MSIxIndex * fusion->reply_alloc_sz)/
1724 sizeof(union MPI2_REPLY_DESCRIPTORS_UNION)) +
1725 fusion->last_reply_idx[MSIxIndex];
1726
1727 reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
1728
1729 d_val.word = desc->Words;
1730
1731 reply_descript_type = reply_desc->ReplyFlags &
1732 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
1733
1734 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
1735 return IRQ_NONE;
1736
1737 d_val.word = desc->Words;
1738
1739 num_completed = 0;
1740
1741 while ((d_val.u.low != UINT_MAX) && (d_val.u.high != UINT_MAX)) {
1742 smid = reply_desc->SMID;
1743
1744 cmd_fusion = fusion->cmd_list[smid - 1];
1745
1746 scsi_io_req =
1747 (struct MPI2_RAID_SCSI_IO_REQUEST *)
1748 cmd_fusion->io_request;
1749
1750 if (cmd_fusion->scmd)
1751 cmd_fusion->scmd->SCp.ptr = NULL;
1752
1753 status = scsi_io_req->RaidContext.status;
1754 extStatus = scsi_io_req->RaidContext.exStatus;
1755
1756 switch (scsi_io_req->Function) {
1757 case MPI2_FUNCTION_SCSI_IO_REQUEST: /*Fast Path IO.*/
1758 /* Update load balancing info */
1759 device_id = MEGASAS_DEV_INDEX(instance,
1760 cmd_fusion->scmd);
1761 lbinfo = &fusion->load_balance_info[device_id];
1762 if (cmd_fusion->scmd->SCp.Status &
1763 MEGASAS_LOAD_BALANCE_FLAG) {
1764 arm = lbinfo->raid1DevHandle[0] ==
1765 cmd_fusion->io_request->DevHandle ? 0 :
1766 1;
1767 atomic_dec(&lbinfo->scsi_pending_cmds[arm]);
1768 cmd_fusion->scmd->SCp.Status &=
1769 ~MEGASAS_LOAD_BALANCE_FLAG;
1770 }
1771 if (reply_descript_type ==
1772 MPI2_RPY_DESCRIPT_FLAGS_SCSI_IO_SUCCESS) {
1773 if (megasas_dbg_lvl == 5)
1774 printk(KERN_ERR "\nmegasas: FAST Path "
1775 "IO Success\n");
1776 }
1777 /* Fall thru and complete IO */
1778 case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */
1779 /* Map the FW Cmd Status */
1780 map_cmd_status(cmd_fusion, status, extStatus);
1781 scsi_dma_unmap(cmd_fusion->scmd);
1782 cmd_fusion->scmd->scsi_done(cmd_fusion->scmd);
1783 scsi_io_req->RaidContext.status = 0;
1784 scsi_io_req->RaidContext.exStatus = 0;
1785 megasas_return_cmd_fusion(instance, cmd_fusion);
1786 atomic_dec(&instance->fw_outstanding);
1787
1788 break;
1789 case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */
1790 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
1791 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
1792 cmd_fusion->flags = 0;
1793 megasas_return_cmd_fusion(instance, cmd_fusion);
1794
1795 break;
1796 }
1797
1798 fusion->last_reply_idx[MSIxIndex]++;
1799 if (fusion->last_reply_idx[MSIxIndex] >=
1800 fusion->reply_q_depth)
1801 fusion->last_reply_idx[MSIxIndex] = 0;
1802
1803 desc->Words = ULLONG_MAX;
1804 num_completed++;
1805
1806 /* Get the next reply descriptor */
1807 if (!fusion->last_reply_idx[MSIxIndex])
1808 desc = fusion->reply_frames_desc +
1809 ((MSIxIndex * fusion->reply_alloc_sz)/
1810 sizeof(union MPI2_REPLY_DESCRIPTORS_UNION));
1811 else
1812 desc++;
1813
1814 reply_desc =
1815 (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
1816
1817 d_val.word = desc->Words;
1818
1819 reply_descript_type = reply_desc->ReplyFlags &
1820 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
1821
1822 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
1823 break;
1824 }
1825
1826 if (!num_completed)
1827 return IRQ_NONE;
1828
1829 wmb();
1830 writel((MSIxIndex << 24) | fusion->last_reply_idx[MSIxIndex],
1831 &instance->reg_set->reply_post_host_index);
1832 megasas_check_and_restore_queue_depth(instance);
1833 return IRQ_HANDLED;
1834 }
1835
1836 /**
1837 * megasas_complete_cmd_dpc_fusion - Completes command
1838 * @instance: Adapter soft state
1839 *
1840 * Tasklet to complete cmds
1841 */
1842 void
1843 megasas_complete_cmd_dpc_fusion(unsigned long instance_addr)
1844 {
1845 struct megasas_instance *instance =
1846 (struct megasas_instance *)instance_addr;
1847 unsigned long flags;
1848 u32 count, MSIxIndex;
1849
1850 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
1851
1852 /* If we have already declared adapter dead, donot complete cmds */
1853 spin_lock_irqsave(&instance->hba_lock, flags);
1854 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
1855 spin_unlock_irqrestore(&instance->hba_lock, flags);
1856 return;
1857 }
1858 spin_unlock_irqrestore(&instance->hba_lock, flags);
1859
1860 spin_lock_irqsave(&instance->completion_lock, flags);
1861 for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++)
1862 complete_cmd_fusion(instance, MSIxIndex);
1863 spin_unlock_irqrestore(&instance->completion_lock, flags);
1864 }
1865
1866 /**
1867 * megasas_isr_fusion - isr entry point
1868 */
1869 irqreturn_t megasas_isr_fusion(int irq, void *devp)
1870 {
1871 struct megasas_irq_context *irq_context = devp;
1872 struct megasas_instance *instance = irq_context->instance;
1873 u32 mfiStatus, fw_state;
1874
1875 if (!instance->msix_vectors) {
1876 mfiStatus = instance->instancet->clear_intr(instance->reg_set);
1877 if (!mfiStatus)
1878 return IRQ_NONE;
1879 }
1880
1881 /* If we are resetting, bail */
1882 if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) {
1883 instance->instancet->clear_intr(instance->reg_set);
1884 return IRQ_HANDLED;
1885 }
1886
1887 if (!complete_cmd_fusion(instance, irq_context->MSIxIndex)) {
1888 instance->instancet->clear_intr(instance->reg_set);
1889 /* If we didn't complete any commands, check for FW fault */
1890 fw_state = instance->instancet->read_fw_status_reg(
1891 instance->reg_set) & MFI_STATE_MASK;
1892 if (fw_state == MFI_STATE_FAULT)
1893 schedule_work(&instance->work_init);
1894 }
1895
1896 return IRQ_HANDLED;
1897 }
1898
1899 /**
1900 * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru
1901 * @instance: Adapter soft state
1902 * mfi_cmd: megasas_cmd pointer
1903 *
1904 */
1905 u8
1906 build_mpt_mfi_pass_thru(struct megasas_instance *instance,
1907 struct megasas_cmd *mfi_cmd)
1908 {
1909 struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain;
1910 struct MPI2_RAID_SCSI_IO_REQUEST *io_req;
1911 struct megasas_cmd_fusion *cmd;
1912 struct fusion_context *fusion;
1913 struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr;
1914
1915 cmd = megasas_get_cmd_fusion(instance);
1916 if (!cmd)
1917 return 1;
1918
1919 /* Save the smid. To be used for returning the cmd */
1920 mfi_cmd->context.smid = cmd->index;
1921
1922 cmd->sync_cmd_idx = mfi_cmd->index;
1923
1924 /*
1925 * For cmds where the flag is set, store the flag and check
1926 * on completion. For cmds with this flag, don't call
1927 * megasas_complete_cmd
1928 */
1929
1930 if (frame_hdr->flags & MFI_FRAME_DONT_POST_IN_REPLY_QUEUE)
1931 cmd->flags = MFI_FRAME_DONT_POST_IN_REPLY_QUEUE;
1932
1933 fusion = instance->ctrl_context;
1934 io_req = cmd->io_request;
1935
1936 if (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) {
1937 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end =
1938 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL;
1939 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
1940 sgl_ptr_end->Flags = 0;
1941 }
1942
1943 mpi25_ieee_chain =
1944 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain;
1945
1946 io_req->Function = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST;
1947 io_req->SGLOffset0 = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST,
1948 SGL) / 4;
1949 io_req->ChainOffset = fusion->chain_offset_mfi_pthru;
1950
1951 mpi25_ieee_chain->Address = mfi_cmd->frame_phys_addr;
1952
1953 mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
1954 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR;
1955
1956 mpi25_ieee_chain->Length = MEGASAS_MAX_SZ_CHAIN_FRAME;
1957
1958 return 0;
1959 }
1960
1961 /**
1962 * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd
1963 * @instance: Adapter soft state
1964 * @cmd: mfi cmd to build
1965 *
1966 */
1967 union MEGASAS_REQUEST_DESCRIPTOR_UNION *
1968 build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
1969 {
1970 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
1971 u16 index;
1972
1973 if (build_mpt_mfi_pass_thru(instance, cmd)) {
1974 printk(KERN_ERR "Couldn't build MFI pass thru cmd\n");
1975 return NULL;
1976 }
1977
1978 index = cmd->context.smid;
1979
1980 req_desc = megasas_get_request_descriptor(instance, index - 1);
1981
1982 if (!req_desc)
1983 return NULL;
1984
1985 req_desc->Words = 0;
1986 req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
1987 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1988
1989 req_desc->SCSIIO.SMID = index;
1990
1991 return req_desc;
1992 }
1993
1994 /**
1995 * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd
1996 * @instance: Adapter soft state
1997 * @cmd: mfi cmd pointer
1998 *
1999 */
2000 void
2001 megasas_issue_dcmd_fusion(struct megasas_instance *instance,
2002 struct megasas_cmd *cmd)
2003 {
2004 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2005
2006 req_desc = build_mpt_cmd(instance, cmd);
2007 if (!req_desc) {
2008 printk(KERN_ERR "Couldn't issue MFI pass thru cmd\n");
2009 return;
2010 }
2011 instance->instancet->fire_cmd(instance, req_desc->u.low,
2012 req_desc->u.high, instance->reg_set);
2013 }
2014
2015 /**
2016 * megasas_release_fusion - Reverses the FW initialization
2017 * @intance: Adapter soft state
2018 */
2019 void
2020 megasas_release_fusion(struct megasas_instance *instance)
2021 {
2022 megasas_free_cmds(instance);
2023 megasas_free_cmds_fusion(instance);
2024
2025 iounmap(instance->reg_set);
2026
2027 pci_release_selected_regions(instance->pdev, instance->bar);
2028 }
2029
2030 /**
2031 * megasas_read_fw_status_reg_fusion - returns the current FW status value
2032 * @regs: MFI register set
2033 */
2034 static u32
2035 megasas_read_fw_status_reg_fusion(struct megasas_register_set __iomem *regs)
2036 {
2037 return readl(&(regs)->outbound_scratch_pad);
2038 }
2039
2040 /**
2041 * megasas_adp_reset_fusion - For controller reset
2042 * @regs: MFI register set
2043 */
2044 static int
2045 megasas_adp_reset_fusion(struct megasas_instance *instance,
2046 struct megasas_register_set __iomem *regs)
2047 {
2048 return 0;
2049 }
2050
2051 /**
2052 * megasas_check_reset_fusion - For controller reset check
2053 * @regs: MFI register set
2054 */
2055 static int
2056 megasas_check_reset_fusion(struct megasas_instance *instance,
2057 struct megasas_register_set __iomem *regs)
2058 {
2059 return 0;
2060 }
2061
2062 /* This function waits for outstanding commands on fusion to complete */
2063 int megasas_wait_for_outstanding_fusion(struct megasas_instance *instance)
2064 {
2065 int i, outstanding, retval = 0;
2066 u32 fw_state, wait_time = MEGASAS_RESET_WAIT_TIME;
2067
2068 for (i = 0; i < wait_time; i++) {
2069 /* Check if firmware is in fault state */
2070 fw_state = instance->instancet->read_fw_status_reg(
2071 instance->reg_set) & MFI_STATE_MASK;
2072 if (fw_state == MFI_STATE_FAULT) {
2073 printk(KERN_WARNING "megasas: Found FW in FAULT state,"
2074 " will reset adapter.\n");
2075 retval = 1;
2076 goto out;
2077 }
2078
2079 outstanding = atomic_read(&instance->fw_outstanding);
2080 if (!outstanding)
2081 goto out;
2082
2083 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2084 printk(KERN_NOTICE "megasas: [%2d]waiting for %d "
2085 "commands to complete\n", i, outstanding);
2086 megasas_complete_cmd_dpc_fusion(
2087 (unsigned long)instance);
2088 }
2089 msleep(1000);
2090 }
2091
2092 if (atomic_read(&instance->fw_outstanding)) {
2093 printk("megaraid_sas: pending commands remain after waiting, "
2094 "will reset adapter.\n");
2095 retval = 1;
2096 }
2097 out:
2098 return retval;
2099 }
2100
2101 void megasas_reset_reply_desc(struct megasas_instance *instance)
2102 {
2103 int i, count;
2104 struct fusion_context *fusion;
2105 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
2106
2107 fusion = instance->ctrl_context;
2108 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
2109 for (i = 0 ; i < count ; i++)
2110 fusion->last_reply_idx[i] = 0;
2111 reply_desc = fusion->reply_frames_desc;
2112 for (i = 0 ; i < fusion->reply_q_depth * count; i++, reply_desc++)
2113 reply_desc->Words = ULLONG_MAX;
2114 }
2115
2116 /* Core fusion reset function */
2117 int megasas_reset_fusion(struct Scsi_Host *shost)
2118 {
2119 int retval = SUCCESS, i, j, retry = 0;
2120 struct megasas_instance *instance;
2121 struct megasas_cmd_fusion *cmd_fusion;
2122 struct fusion_context *fusion;
2123 struct megasas_cmd *cmd_mfi;
2124 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2125 u32 host_diag, abs_state, status_reg, reset_adapter;
2126
2127 instance = (struct megasas_instance *)shost->hostdata;
2128 fusion = instance->ctrl_context;
2129
2130 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
2131 printk(KERN_WARNING "megaraid_sas: Hardware critical error, "
2132 "returning FAILED.\n");
2133 return FAILED;
2134 }
2135
2136 mutex_lock(&instance->reset_mutex);
2137 set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
2138 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
2139 instance->instancet->disable_intr(instance->reg_set);
2140 msleep(1000);
2141
2142 /* First try waiting for commands to complete */
2143 if (megasas_wait_for_outstanding_fusion(instance)) {
2144 printk(KERN_WARNING "megaraid_sas: resetting fusion "
2145 "adapter.\n");
2146 /* Now return commands back to the OS */
2147 for (i = 0 ; i < instance->max_fw_cmds; i++) {
2148 cmd_fusion = fusion->cmd_list[i];
2149 if (cmd_fusion->scmd) {
2150 scsi_dma_unmap(cmd_fusion->scmd);
2151 cmd_fusion->scmd->result = (DID_RESET << 16);
2152 cmd_fusion->scmd->scsi_done(cmd_fusion->scmd);
2153 megasas_return_cmd_fusion(instance, cmd_fusion);
2154 atomic_dec(&instance->fw_outstanding);
2155 }
2156 }
2157
2158 status_reg = instance->instancet->read_fw_status_reg(
2159 instance->reg_set);
2160 abs_state = status_reg & MFI_STATE_MASK;
2161 reset_adapter = status_reg & MFI_RESET_ADAPTER;
2162 if (instance->disableOnlineCtrlReset ||
2163 (abs_state == MFI_STATE_FAULT && !reset_adapter)) {
2164 /* Reset not supported, kill adapter */
2165 printk(KERN_WARNING "megaraid_sas: Reset not supported"
2166 ", killing adapter.\n");
2167 megaraid_sas_kill_hba(instance);
2168 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2169 retval = FAILED;
2170 goto out;
2171 }
2172
2173 /* Now try to reset the chip */
2174 for (i = 0; i < MEGASAS_FUSION_MAX_RESET_TRIES; i++) {
2175 writel(MPI2_WRSEQ_FLUSH_KEY_VALUE,
2176 &instance->reg_set->fusion_seq_offset);
2177 writel(MPI2_WRSEQ_1ST_KEY_VALUE,
2178 &instance->reg_set->fusion_seq_offset);
2179 writel(MPI2_WRSEQ_2ND_KEY_VALUE,
2180 &instance->reg_set->fusion_seq_offset);
2181 writel(MPI2_WRSEQ_3RD_KEY_VALUE,
2182 &instance->reg_set->fusion_seq_offset);
2183 writel(MPI2_WRSEQ_4TH_KEY_VALUE,
2184 &instance->reg_set->fusion_seq_offset);
2185 writel(MPI2_WRSEQ_5TH_KEY_VALUE,
2186 &instance->reg_set->fusion_seq_offset);
2187 writel(MPI2_WRSEQ_6TH_KEY_VALUE,
2188 &instance->reg_set->fusion_seq_offset);
2189
2190 /* Check that the diag write enable (DRWE) bit is on */
2191 host_diag = readl(&instance->reg_set->fusion_host_diag);
2192 retry = 0;
2193 while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) {
2194 msleep(100);
2195 host_diag =
2196 readl(&instance->reg_set->fusion_host_diag);
2197 if (retry++ == 100) {
2198 printk(KERN_WARNING "megaraid_sas: "
2199 "Host diag unlock failed!\n");
2200 break;
2201 }
2202 }
2203 if (!(host_diag & HOST_DIAG_WRITE_ENABLE))
2204 continue;
2205
2206 /* Send chip reset command */
2207 writel(host_diag | HOST_DIAG_RESET_ADAPTER,
2208 &instance->reg_set->fusion_host_diag);
2209 msleep(3000);
2210
2211 /* Make sure reset adapter bit is cleared */
2212 host_diag = readl(&instance->reg_set->fusion_host_diag);
2213 retry = 0;
2214 while (host_diag & HOST_DIAG_RESET_ADAPTER) {
2215 msleep(100);
2216 host_diag =
2217 readl(&instance->reg_set->fusion_host_diag);
2218 if (retry++ == 1000) {
2219 printk(KERN_WARNING "megaraid_sas: "
2220 "Diag reset adapter never "
2221 "cleared!\n");
2222 break;
2223 }
2224 }
2225 if (host_diag & HOST_DIAG_RESET_ADAPTER)
2226 continue;
2227
2228 abs_state =
2229 instance->instancet->read_fw_status_reg(
2230 instance->reg_set) & MFI_STATE_MASK;
2231 retry = 0;
2232
2233 while ((abs_state <= MFI_STATE_FW_INIT) &&
2234 (retry++ < 1000)) {
2235 msleep(100);
2236 abs_state =
2237 instance->instancet->read_fw_status_reg(
2238 instance->reg_set) & MFI_STATE_MASK;
2239 }
2240 if (abs_state <= MFI_STATE_FW_INIT) {
2241 printk(KERN_WARNING "megaraid_sas: firmware "
2242 "state < MFI_STATE_FW_INIT, state = "
2243 "0x%x\n", abs_state);
2244 continue;
2245 }
2246
2247 /* Wait for FW to become ready */
2248 if (megasas_transition_to_ready(instance, 1)) {
2249 printk(KERN_WARNING "megaraid_sas: Failed to "
2250 "transition controller to ready.\n");
2251 continue;
2252 }
2253
2254 megasas_reset_reply_desc(instance);
2255 if (megasas_ioc_init_fusion(instance)) {
2256 printk(KERN_WARNING "megaraid_sas: "
2257 "megasas_ioc_init_fusion() failed!\n");
2258 continue;
2259 }
2260
2261 clear_bit(MEGASAS_FUSION_IN_RESET,
2262 &instance->reset_flags);
2263 instance->instancet->enable_intr(instance->reg_set);
2264 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
2265
2266 /* Re-fire management commands */
2267 for (j = 0 ; j < instance->max_fw_cmds; j++) {
2268 cmd_fusion = fusion->cmd_list[j];
2269 if (cmd_fusion->sync_cmd_idx !=
2270 (u32)ULONG_MAX) {
2271 cmd_mfi =
2272 instance->
2273 cmd_list[cmd_fusion->sync_cmd_idx];
2274 if (cmd_mfi->frame->dcmd.opcode ==
2275 MR_DCMD_LD_MAP_GET_INFO) {
2276 megasas_return_cmd(instance,
2277 cmd_mfi);
2278 megasas_return_cmd_fusion(
2279 instance, cmd_fusion);
2280 } else {
2281 req_desc =
2282 megasas_get_request_descriptor(
2283 instance,
2284 cmd_mfi->context.smid
2285 -1);
2286 if (!req_desc)
2287 printk(KERN_WARNING
2288 "req_desc NULL"
2289 "\n");
2290 else {
2291 instance->instancet->
2292 fire_cmd(instance,
2293 req_desc->
2294 u.low,
2295 req_desc->
2296 u.high,
2297 instance->
2298 reg_set);
2299 }
2300 }
2301 }
2302 }
2303
2304 /* Reset load balance info */
2305 memset(fusion->load_balance_info, 0,
2306 sizeof(struct LD_LOAD_BALANCE_INFO)
2307 *MAX_LOGICAL_DRIVES);
2308
2309 if (!megasas_get_map_info(instance))
2310 megasas_sync_map_info(instance);
2311
2312 /* Adapter reset completed successfully */
2313 printk(KERN_WARNING "megaraid_sas: Reset "
2314 "successful.\n");
2315 retval = SUCCESS;
2316 goto out;
2317 }
2318 /* Reset failed, kill the adapter */
2319 printk(KERN_WARNING "megaraid_sas: Reset failed, killing "
2320 "adapter.\n");
2321 megaraid_sas_kill_hba(instance);
2322 retval = FAILED;
2323 } else {
2324 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
2325 instance->instancet->enable_intr(instance->reg_set);
2326 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
2327 }
2328 out:
2329 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
2330 mutex_unlock(&instance->reset_mutex);
2331 return retval;
2332 }
2333
2334 /* Fusion OCR work queue */
2335 void megasas_fusion_ocr_wq(struct work_struct *work)
2336 {
2337 struct megasas_instance *instance =
2338 container_of(work, struct megasas_instance, work_init);
2339
2340 megasas_reset_fusion(instance->host);
2341 }
2342
2343 struct megasas_instance_template megasas_instance_template_fusion = {
2344 .fire_cmd = megasas_fire_cmd_fusion,
2345 .enable_intr = megasas_enable_intr_fusion,
2346 .disable_intr = megasas_disable_intr_fusion,
2347 .clear_intr = megasas_clear_intr_fusion,
2348 .read_fw_status_reg = megasas_read_fw_status_reg_fusion,
2349 .adp_reset = megasas_adp_reset_fusion,
2350 .check_reset = megasas_check_reset_fusion,
2351 .service_isr = megasas_isr_fusion,
2352 .tasklet = megasas_complete_cmd_dpc_fusion,
2353 .init_adapter = megasas_init_adapter_fusion,
2354 .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion,
2355 .issue_dcmd = megasas_issue_dcmd_fusion,
2356 };
Linux with added FPC-III support