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Btrfs: fix memory leak of empty filesystem after balance
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / scsi / megaraid / megaraid_sas_fusion.c
blobc1e09d5a6196a46552b164585407365aba4e486a
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/smp_lock.h>
42 #include <linux/uio.h>
43 #include <linux/uaccess.h>
44 #include <linux/fs.h>
45 #include <linux/compat.h>
46 #include <linux/blkdev.h>
47 #include <linux/mutex.h>
48 #include <linux/poll.h>
49
50 #include <scsi/scsi.h>
51 #include <scsi/scsi_cmnd.h>
52 #include <scsi/scsi_device.h>
53 #include <scsi/scsi_host.h>
54
55 #include "megaraid_sas_fusion.h"
56 #include "megaraid_sas.h"
57
58 extern void megasas_free_cmds(struct megasas_instance *instance);
59 extern struct megasas_cmd *megasas_get_cmd(struct megasas_instance
60 *instance);
61 extern void
62 megasas_complete_cmd(struct megasas_instance *instance,
63 struct megasas_cmd *cmd, u8 alt_status);
64 int megasas_is_ldio(struct scsi_cmnd *cmd);
65 int
66 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd);
67
68 void
69 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd);
70 int megasas_alloc_cmds(struct megasas_instance *instance);
71 int
72 megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs);
73 int
74 megasas_issue_polled(struct megasas_instance *instance,
75 struct megasas_cmd *cmd);
76
77 u8
78 MR_BuildRaidContext(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 u8 MR_ValidateMapInfo(struct MR_FW_RAID_MAP_ALL *map,
86 struct LD_LOAD_BALANCE_INFO *lbInfo);
87 u16 get_updated_dev_handle(struct LD_LOAD_BALANCE_INFO *lbInfo,
88 struct IO_REQUEST_INFO *in_info);
89 int megasas_transition_to_ready(struct megasas_instance *instance);
90 void megaraid_sas_kill_hba(struct megasas_instance *instance);
91
92 extern u32 megasas_dbg_lvl;
93
94 /**
95 * megasas_enable_intr_fusion - Enables interrupts
96 * @regs: MFI register set
97 */
98 void
99 megasas_enable_intr_fusion(struct megasas_register_set __iomem *regs)
100 {
101 writel(~MFI_FUSION_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
102
103 /* Dummy readl to force pci flush */
104 readl(&regs->outbound_intr_mask);
105 }
106
107 /**
108 * megasas_disable_intr_fusion - Disables interrupt
109 * @regs: MFI register set
110 */
111 void
112 megasas_disable_intr_fusion(struct megasas_register_set __iomem *regs)
113 {
114 u32 mask = 0xFFFFFFFF;
115 u32 status;
116
117 writel(mask, &regs->outbound_intr_mask);
118 /* Dummy readl to force pci flush */
119 status = readl(&regs->outbound_intr_mask);
120 }
121
122 int
123 megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs)
124 {
125 u32 status;
126 /*
127 * Check if it is our interrupt
128 */
129 status = readl(&regs->outbound_intr_status);
130
131 if (status & 1) {
132 writel(status, &regs->outbound_intr_status);
133 readl(&regs->outbound_intr_status);
134 return 1;
135 }
136 if (!(status & MFI_FUSION_ENABLE_INTERRUPT_MASK))
137 return 0;
138
139 /*
140 * dummy read to flush PCI
141 */
142 readl(&regs->outbound_intr_status);
143
144 return 1;
145 }
146
147 /**
148 * megasas_get_cmd_fusion - Get a command from the free pool
149 * @instance: Adapter soft state
150 *
151 * Returns a free command from the pool
152 */
153 struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance
154 *instance)
155 {
156 unsigned long flags;
157 struct fusion_context *fusion =
158 (struct fusion_context *)instance->ctrl_context;
159 struct megasas_cmd_fusion *cmd = NULL;
160
161 spin_lock_irqsave(&fusion->cmd_pool_lock, flags);
162
163 if (!list_empty(&fusion->cmd_pool)) {
164 cmd = list_entry((&fusion->cmd_pool)->next,
165 struct megasas_cmd_fusion, list);
166 list_del_init(&cmd->list);
167 } else {
168 printk(KERN_ERR "megasas: Command pool (fusion) empty!\n");
169 }
170
171 spin_unlock_irqrestore(&fusion->cmd_pool_lock, flags);
172 return cmd;
173 }
174
175 /**
176 * megasas_return_cmd_fusion - Return a cmd to free command pool
177 * @instance: Adapter soft state
178 * @cmd: Command packet to be returned to free command pool
179 */
180 static inline void
181 megasas_return_cmd_fusion(struct megasas_instance *instance,
182 struct megasas_cmd_fusion *cmd)
183 {
184 unsigned long flags;
185 struct fusion_context *fusion =
186 (struct fusion_context *)instance->ctrl_context;
187
188 spin_lock_irqsave(&fusion->cmd_pool_lock, flags);
189
190 cmd->scmd = NULL;
191 cmd->sync_cmd_idx = (u32)ULONG_MAX;
192 list_add_tail(&cmd->list, &fusion->cmd_pool);
193
194 spin_unlock_irqrestore(&fusion->cmd_pool_lock, flags);
195 }
196
197 /**
198 * megasas_teardown_frame_pool_fusion - Destroy the cmd frame DMA pool
199 * @instance: Adapter soft state
200 */
201 static void megasas_teardown_frame_pool_fusion(
202 struct megasas_instance *instance)
203 {
204 int i;
205 struct fusion_context *fusion = instance->ctrl_context;
206
207 u16 max_cmd = instance->max_fw_cmds;
208
209 struct megasas_cmd_fusion *cmd;
210
211 if (!fusion->sg_dma_pool || !fusion->sense_dma_pool) {
212 printk(KERN_ERR "megasas: dma pool is null. SG Pool %p, "
213 "sense pool : %p\n", fusion->sg_dma_pool,
214 fusion->sense_dma_pool);
215 return;
216 }
217
218 /*
219 * Return all frames to pool
220 */
221 for (i = 0; i < max_cmd; i++) {
222
223 cmd = fusion->cmd_list[i];
224
225 if (cmd->sg_frame)
226 pci_pool_free(fusion->sg_dma_pool, cmd->sg_frame,
227 cmd->sg_frame_phys_addr);
228
229 if (cmd->sense)
230 pci_pool_free(fusion->sense_dma_pool, cmd->sense,
231 cmd->sense_phys_addr);
232 }
233
234 /*
235 * Now destroy the pool itself
236 */
237 pci_pool_destroy(fusion->sg_dma_pool);
238 pci_pool_destroy(fusion->sense_dma_pool);
239
240 fusion->sg_dma_pool = NULL;
241 fusion->sense_dma_pool = NULL;
242 }
243
244 /**
245 * megasas_free_cmds_fusion - Free all the cmds in the free cmd pool
246 * @instance: Adapter soft state
247 */
248 void
249 megasas_free_cmds_fusion(struct megasas_instance *instance)
250 {
251 int i;
252 struct fusion_context *fusion = instance->ctrl_context;
253
254 u32 max_cmds, req_sz, reply_sz, io_frames_sz;
255
256
257 req_sz = fusion->request_alloc_sz;
258 reply_sz = fusion->reply_alloc_sz;
259 io_frames_sz = fusion->io_frames_alloc_sz;
260
261 max_cmds = instance->max_fw_cmds;
262
263 /* Free descriptors and request Frames memory */
264 if (fusion->req_frames_desc)
265 dma_free_coherent(&instance->pdev->dev, req_sz,
266 fusion->req_frames_desc,
267 fusion->req_frames_desc_phys);
268
269 if (fusion->reply_frames_desc) {
270 pci_pool_free(fusion->reply_frames_desc_pool,
271 fusion->reply_frames_desc,
272 fusion->reply_frames_desc_phys);
273 pci_pool_destroy(fusion->reply_frames_desc_pool);
274 }
275
276 if (fusion->io_request_frames) {
277 pci_pool_free(fusion->io_request_frames_pool,
278 fusion->io_request_frames,
279 fusion->io_request_frames_phys);
280 pci_pool_destroy(fusion->io_request_frames_pool);
281 }
282
283 /* Free the Fusion frame pool */
284 megasas_teardown_frame_pool_fusion(instance);
285
286 /* Free all the commands in the cmd_list */
287 for (i = 0; i < max_cmds; i++)
288 kfree(fusion->cmd_list[i]);
289
290 /* Free the cmd_list buffer itself */
291 kfree(fusion->cmd_list);
292 fusion->cmd_list = NULL;
293
294 INIT_LIST_HEAD(&fusion->cmd_pool);
295 }
296
297 /**
298 * megasas_create_frame_pool_fusion - Creates DMA pool for cmd frames
299 * @instance: Adapter soft state
300 *
301 */
302 static int megasas_create_frame_pool_fusion(struct megasas_instance *instance)
303 {
304 int i;
305 u32 max_cmd;
306 struct fusion_context *fusion;
307 struct megasas_cmd_fusion *cmd;
308 u32 total_sz_chain_frame;
309
310 fusion = instance->ctrl_context;
311 max_cmd = instance->max_fw_cmds;
312
313 total_sz_chain_frame = MEGASAS_MAX_SZ_CHAIN_FRAME;
314
315 /*
316 * Use DMA pool facility provided by PCI layer
317 */
318
319 fusion->sg_dma_pool = pci_pool_create("megasas sg pool fusion",
320 instance->pdev,
321 total_sz_chain_frame, 4,
322 0);
323 if (!fusion->sg_dma_pool) {
324 printk(KERN_DEBUG "megasas: failed to setup request pool "
325 "fusion\n");
326 return -ENOMEM;
327 }
328 fusion->sense_dma_pool = pci_pool_create("megasas sense pool fusion",
329 instance->pdev,
330 SCSI_SENSE_BUFFERSIZE, 64, 0);
331
332 if (!fusion->sense_dma_pool) {
333 printk(KERN_DEBUG "megasas: failed to setup sense pool "
334 "fusion\n");
335 pci_pool_destroy(fusion->sg_dma_pool);
336 fusion->sg_dma_pool = NULL;
337 return -ENOMEM;
338 }
339
340 /*
341 * Allocate and attach a frame to each of the commands in cmd_list
342 */
343 for (i = 0; i < max_cmd; i++) {
344
345 cmd = fusion->cmd_list[i];
346
347 cmd->sg_frame = pci_pool_alloc(fusion->sg_dma_pool,
348 GFP_KERNEL,
349 &cmd->sg_frame_phys_addr);
350
351 cmd->sense = pci_pool_alloc(fusion->sense_dma_pool,
352 GFP_KERNEL, &cmd->sense_phys_addr);
353 /*
354 * megasas_teardown_frame_pool_fusion() takes care of freeing
355 * whatever has been allocated
356 */
357 if (!cmd->sg_frame || !cmd->sense) {
358 printk(KERN_DEBUG "megasas: pci_pool_alloc failed\n");
359 megasas_teardown_frame_pool_fusion(instance);
360 return -ENOMEM;
361 }
362 }
363 return 0;
364 }
365
366 /**
367 * megasas_alloc_cmds_fusion - Allocates the command packets
368 * @instance: Adapter soft state
369 *
370 *
371 * Each frame has a 32-bit field called context. This context is used to get
372 * back the megasas_cmd_fusion from the frame when a frame gets completed
373 * In this driver, the 32 bit values are the indices into an array cmd_list.
374 * This array is used only to look up the megasas_cmd_fusion given the context.
375 * The free commands themselves are maintained in a linked list called cmd_pool.
376 *
377 * cmds are formed in the io_request and sg_frame members of the
378 * megasas_cmd_fusion. The context field is used to get a request descriptor
379 * and is used as SMID of the cmd.
380 * SMID value range is from 1 to max_fw_cmds.
381 */
382 int
383 megasas_alloc_cmds_fusion(struct megasas_instance *instance)
384 {
385 int i, j;
386 u32 max_cmd, io_frames_sz;
387 struct fusion_context *fusion;
388 struct megasas_cmd_fusion *cmd;
389 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
390 u32 offset;
391 dma_addr_t io_req_base_phys;
392 u8 *io_req_base;
393
394 fusion = instance->ctrl_context;
395
396 max_cmd = instance->max_fw_cmds;
397
398 fusion->req_frames_desc =
399 dma_alloc_coherent(&instance->pdev->dev,
400 fusion->request_alloc_sz,
401 &fusion->req_frames_desc_phys, GFP_KERNEL);
402
403 if (!fusion->req_frames_desc) {
404 printk(KERN_ERR "megasas; Could not allocate memory for "
405 "request_frames\n");
406 goto fail_req_desc;
407 }
408
409 fusion->reply_frames_desc_pool =
410 pci_pool_create("reply_frames pool", instance->pdev,
411 fusion->reply_alloc_sz, 16, 0);
412
413 if (!fusion->reply_frames_desc_pool) {
414 printk(KERN_ERR "megasas; Could not allocate memory for "
415 "reply_frame pool\n");
416 goto fail_reply_desc;
417 }
418
419 fusion->reply_frames_desc =
420 pci_pool_alloc(fusion->reply_frames_desc_pool, GFP_KERNEL,
421 &fusion->reply_frames_desc_phys);
422 if (!fusion->reply_frames_desc) {
423 printk(KERN_ERR "megasas; Could not allocate memory for "
424 "reply_frame pool\n");
425 pci_pool_destroy(fusion->reply_frames_desc_pool);
426 goto fail_reply_desc;
427 }
428
429 reply_desc = fusion->reply_frames_desc;
430 for (i = 0; i < fusion->reply_q_depth; i++, reply_desc++)
431 reply_desc->Words = ULLONG_MAX;
432
433 io_frames_sz = fusion->io_frames_alloc_sz;
434
435 fusion->io_request_frames_pool =
436 pci_pool_create("io_request_frames pool", instance->pdev,
437 fusion->io_frames_alloc_sz, 16, 0);
438
439 if (!fusion->io_request_frames_pool) {
440 printk(KERN_ERR "megasas: Could not allocate memory for "
441 "io_request_frame pool\n");
442 goto fail_io_frames;
443 }
444
445 fusion->io_request_frames =
446 pci_pool_alloc(fusion->io_request_frames_pool, GFP_KERNEL,
447 &fusion->io_request_frames_phys);
448 if (!fusion->io_request_frames) {
449 printk(KERN_ERR "megasas: Could not allocate memory for "
450 "io_request_frames frames\n");
451 pci_pool_destroy(fusion->io_request_frames_pool);
452 goto fail_io_frames;
453 }
454
455 /*
456 * fusion->cmd_list is an array of struct megasas_cmd_fusion pointers.
457 * Allocate the dynamic array first and then allocate individual
458 * commands.
459 */
460 fusion->cmd_list = kmalloc(sizeof(struct megasas_cmd_fusion *)
461 *max_cmd, GFP_KERNEL);
462
463 if (!fusion->cmd_list) {
464 printk(KERN_DEBUG "megasas: out of memory. Could not alloc "
465 "memory for cmd_list_fusion\n");
466 goto fail_cmd_list;
467 }
468
469 memset(fusion->cmd_list, 0, sizeof(struct megasas_cmd_fusion *)
470 *max_cmd);
471
472 max_cmd = instance->max_fw_cmds;
473 for (i = 0; i < max_cmd; i++) {
474 fusion->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd_fusion),
475 GFP_KERNEL);
476 if (!fusion->cmd_list[i]) {
477 printk(KERN_ERR "Could not alloc cmd list fusion\n");
478
479 for (j = 0; j < i; j++)
480 kfree(fusion->cmd_list[j]);
481
482 kfree(fusion->cmd_list);
483 fusion->cmd_list = NULL;
484 goto fail_cmd_list;
485 }
486 }
487
488 /* The first 256 bytes (SMID 0) is not used. Don't add to cmd list */
489 io_req_base = fusion->io_request_frames +
490 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
491 io_req_base_phys = fusion->io_request_frames_phys +
492 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
493
494 /*
495 * Add all the commands to command pool (fusion->cmd_pool)
496 */
497
498 /* SMID 0 is reserved. Set SMID/index from 1 */
499 for (i = 0; i < max_cmd; i++) {
500 cmd = fusion->cmd_list[i];
501 offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i;
502 memset(cmd, 0, sizeof(struct megasas_cmd_fusion));
503 cmd->index = i + 1;
504 cmd->scmd = NULL;
505 cmd->sync_cmd_idx = (u32)ULONG_MAX; /* Set to Invalid */
506 cmd->instance = instance;
507 cmd->io_request =
508 (struct MPI2_RAID_SCSI_IO_REQUEST *)
509 (io_req_base + offset);
510 memset(cmd->io_request, 0,
511 sizeof(struct MPI2_RAID_SCSI_IO_REQUEST));
512 cmd->io_request_phys_addr = io_req_base_phys + offset;
513
514 list_add_tail(&cmd->list, &fusion->cmd_pool);
515 }
516
517 /*
518 * Create a frame pool and assign one frame to each cmd
519 */
520 if (megasas_create_frame_pool_fusion(instance)) {
521 printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n");
522 megasas_free_cmds_fusion(instance);
523 goto fail_req_desc;
524 }
525
526 return 0;
527
528 fail_cmd_list:
529 pci_pool_free(fusion->io_request_frames_pool, fusion->io_request_frames,
530 fusion->io_request_frames_phys);
531 pci_pool_destroy(fusion->io_request_frames_pool);
532 fail_io_frames:
533 dma_free_coherent(&instance->pdev->dev, fusion->request_alloc_sz,
534 fusion->reply_frames_desc,
535 fusion->reply_frames_desc_phys);
536 pci_pool_free(fusion->reply_frames_desc_pool,
537 fusion->reply_frames_desc,
538 fusion->reply_frames_desc_phys);
539 pci_pool_destroy(fusion->reply_frames_desc_pool);
540
541 fail_reply_desc:
542 dma_free_coherent(&instance->pdev->dev, fusion->request_alloc_sz,
543 fusion->req_frames_desc,
544 fusion->req_frames_desc_phys);
545 fail_req_desc:
546 return -ENOMEM;
547 }
548
549 /**
550 * wait_and_poll - Issues a polling command
551 * @instance: Adapter soft state
552 * @cmd: Command packet to be issued
553 *
554 * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
555 */
556 int
557 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd)
558 {
559 int i;
560 struct megasas_header *frame_hdr = &cmd->frame->hdr;
561
562 u32 msecs = MFI_POLL_TIMEOUT_SECS * 1000;
563
564 /*
565 * Wait for cmd_status to change
566 */
567 for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) {
568 rmb();
569 msleep(20);
570 }
571
572 if (frame_hdr->cmd_status == 0xff)
573 return -ETIME;
574
575 return 0;
576 }
577
578 /**
579 * megasas_ioc_init_fusion - Initializes the FW
580 * @instance: Adapter soft state
581 *
582 * Issues the IOC Init cmd
583 */
584 int
585 megasas_ioc_init_fusion(struct megasas_instance *instance)
586 {
587 struct megasas_init_frame *init_frame;
588 struct MPI2_IOC_INIT_REQUEST *IOCInitMessage;
589 dma_addr_t ioc_init_handle;
590 u32 context;
591 struct megasas_cmd *cmd;
592 u8 ret;
593 struct fusion_context *fusion;
594 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
595 int i;
596 struct megasas_header *frame_hdr;
597
598 fusion = instance->ctrl_context;
599
600 cmd = megasas_get_cmd(instance);
601
602 if (!cmd) {
603 printk(KERN_ERR "Could not allocate cmd for INIT Frame\n");
604 ret = 1;
605 goto fail_get_cmd;
606 }
607
608 IOCInitMessage =
609 dma_alloc_coherent(&instance->pdev->dev,
610 sizeof(struct MPI2_IOC_INIT_REQUEST),
611 &ioc_init_handle, GFP_KERNEL);
612
613 if (!IOCInitMessage) {
614 printk(KERN_ERR "Could not allocate memory for "
615 "IOCInitMessage\n");
616 ret = 1;
617 goto fail_fw_init;
618 }
619
620 memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST));
621
622 IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT;
623 IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER;
624 IOCInitMessage->MsgVersion = MPI2_VERSION;
625 IOCInitMessage->HeaderVersion = MPI2_HEADER_VERSION;
626 IOCInitMessage->SystemRequestFrameSize =
627 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4;
628
629 IOCInitMessage->ReplyDescriptorPostQueueDepth = fusion->reply_q_depth;
630 IOCInitMessage->ReplyDescriptorPostQueueAddress =
631 fusion->reply_frames_desc_phys;
632 IOCInitMessage->SystemRequestFrameBaseAddress =
633 fusion->io_request_frames_phys;
634
635 init_frame = (struct megasas_init_frame *)cmd->frame;
636 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
637
638 frame_hdr = &cmd->frame->hdr;
639 context = init_frame->context;
640 init_frame->context = context;
641
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_return_cmd_for_smid - Returns a cmd_fusion for a SMID
697 * @instance: Adapter soft state
698 *
699 */
700 void
701 megasas_return_cmd_for_smid(struct megasas_instance *instance, u16 smid)
702 {
703 struct fusion_context *fusion;
704 struct megasas_cmd_fusion *cmd;
705
706 fusion = instance->ctrl_context;
707 cmd = fusion->cmd_list[smid - 1];
708 megasas_return_cmd_fusion(instance, cmd);
709 }
710
711 /*
712 * megasas_get_ld_map_info - Returns FW's ld_map structure
713 * @instance: Adapter soft state
714 * @pend: Pend the command or not
715 * Issues an internal command (DCMD) to get the FW's controller PD
716 * list structure. This information is mainly used to find out SYSTEM
717 * supported by the FW.
718 */
719 static int
720 megasas_get_ld_map_info(struct megasas_instance *instance)
721 {
722 int ret = 0;
723 struct megasas_cmd *cmd;
724 struct megasas_dcmd_frame *dcmd;
725 struct MR_FW_RAID_MAP_ALL *ci;
726 dma_addr_t ci_h = 0;
727 u32 size_map_info;
728 struct fusion_context *fusion;
729
730 cmd = megasas_get_cmd(instance);
731
732 if (!cmd) {
733 printk(KERN_DEBUG "megasas: Failed to get cmd for map info.\n");
734 return -ENOMEM;
735 }
736
737 fusion = instance->ctrl_context;
738
739 if (!fusion) {
740 megasas_return_cmd(instance, cmd);
741 return 1;
742 }
743
744 dcmd = &cmd->frame->dcmd;
745
746 size_map_info = sizeof(struct MR_FW_RAID_MAP) +
747 (sizeof(struct MR_LD_SPAN_MAP) *(MAX_LOGICAL_DRIVES - 1));
748
749 ci = fusion->ld_map[(instance->map_id & 1)];
750 ci_h = fusion->ld_map_phys[(instance->map_id & 1)];
751
752 if (!ci) {
753 printk(KERN_DEBUG "Failed to alloc mem for ld_map_info\n");
754 megasas_return_cmd(instance, cmd);
755 return -ENOMEM;
756 }
757
758 memset(ci, 0, sizeof(*ci));
759 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
760
761 dcmd->cmd = MFI_CMD_DCMD;
762 dcmd->cmd_status = 0xFF;
763 dcmd->sge_count = 1;
764 dcmd->flags = MFI_FRAME_DIR_READ;
765 dcmd->timeout = 0;
766 dcmd->pad_0 = 0;
767 dcmd->data_xfer_len = size_map_info;
768 dcmd->opcode = MR_DCMD_LD_MAP_GET_INFO;
769 dcmd->sgl.sge32[0].phys_addr = ci_h;
770 dcmd->sgl.sge32[0].length = size_map_info;
771
772 if (!megasas_issue_polled(instance, cmd))
773 ret = 0;
774 else {
775 printk(KERN_ERR "megasas: Get LD Map Info Failed\n");
776 ret = -1;
777 }
778
779 megasas_return_cmd(instance, cmd);
780
781 return ret;
782 }
783
784 u8
785 megasas_get_map_info(struct megasas_instance *instance)
786 {
787 struct fusion_context *fusion = instance->ctrl_context;
788
789 fusion->fast_path_io = 0;
790 if (!megasas_get_ld_map_info(instance)) {
791 if (MR_ValidateMapInfo(fusion->ld_map[(instance->map_id & 1)],
792 fusion->load_balance_info)) {
793 fusion->fast_path_io = 1;
794 return 0;
795 }
796 }
797 return 1;
798 }
799
800 /*
801 * megasas_sync_map_info - Returns FW's ld_map structure
802 * @instance: Adapter soft state
803 *
804 * Issues an internal command (DCMD) to get the FW's controller PD
805 * list structure. This information is mainly used to find out SYSTEM
806 * supported by the FW.
807 */
808 int
809 megasas_sync_map_info(struct megasas_instance *instance)
810 {
811 int ret = 0, i;
812 struct megasas_cmd *cmd;
813 struct megasas_dcmd_frame *dcmd;
814 u32 size_sync_info, num_lds;
815 struct fusion_context *fusion;
816 struct MR_LD_TARGET_SYNC *ci = NULL;
817 struct MR_FW_RAID_MAP_ALL *map;
818 struct MR_LD_RAID *raid;
819 struct MR_LD_TARGET_SYNC *ld_sync;
820 dma_addr_t ci_h = 0;
821 u32 size_map_info;
822
823 cmd = megasas_get_cmd(instance);
824
825 if (!cmd) {
826 printk(KERN_DEBUG "megasas: Failed to get cmd for sync"
827 "info.\n");
828 return -ENOMEM;
829 }
830
831 fusion = instance->ctrl_context;
832
833 if (!fusion) {
834 megasas_return_cmd(instance, cmd);
835 return 1;
836 }
837
838 map = fusion->ld_map[instance->map_id & 1];
839
840 num_lds = map->raidMap.ldCount;
841
842 dcmd = &cmd->frame->dcmd;
843
844 size_sync_info = sizeof(struct MR_LD_TARGET_SYNC) *num_lds;
845
846 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
847
848 ci = (struct MR_LD_TARGET_SYNC *)
849 fusion->ld_map[(instance->map_id - 1) & 1];
850 memset(ci, 0, sizeof(struct MR_FW_RAID_MAP_ALL));
851
852 ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1];
853
854 ld_sync = (struct MR_LD_TARGET_SYNC *)ci;
855
856 for (i = 0; i < num_lds; i++, ld_sync++) {
857 raid = MR_LdRaidGet(i, map);
858 ld_sync->targetId = MR_GetLDTgtId(i, map);
859 ld_sync->seqNum = raid->seqNum;
860 }
861
862 size_map_info = sizeof(struct MR_FW_RAID_MAP) +
863 (sizeof(struct MR_LD_SPAN_MAP) *(MAX_LOGICAL_DRIVES - 1));
864
865 dcmd->cmd = MFI_CMD_DCMD;
866 dcmd->cmd_status = 0xFF;
867 dcmd->sge_count = 1;
868 dcmd->flags = MFI_FRAME_DIR_WRITE;
869 dcmd->timeout = 0;
870 dcmd->pad_0 = 0;
871 dcmd->data_xfer_len = size_map_info;
872 dcmd->mbox.b[0] = num_lds;
873 dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG;
874 dcmd->opcode = MR_DCMD_LD_MAP_GET_INFO;
875 dcmd->sgl.sge32[0].phys_addr = ci_h;
876 dcmd->sgl.sge32[0].length = size_map_info;
877
878 instance->map_update_cmd = cmd;
879
880 instance->instancet->issue_dcmd(instance, cmd);
881
882 return ret;
883 }
884
885 /**
886 * megasas_init_adapter_fusion - Initializes the FW
887 * @instance: Adapter soft state
888 *
889 * This is the main function for initializing firmware.
890 */
891 u32
892 megasas_init_adapter_fusion(struct megasas_instance *instance)
893 {
894 struct megasas_register_set __iomem *reg_set;
895 struct fusion_context *fusion;
896 u32 max_cmd;
897 int i = 0;
898
899 fusion = instance->ctrl_context;
900
901 reg_set = instance->reg_set;
902
903 /*
904 * Get various operational parameters from status register
905 */
906 instance->max_fw_cmds =
907 instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
908 instance->max_fw_cmds = min(instance->max_fw_cmds, (u16)1008);
909
910 /*
911 * Reduce the max supported cmds by 1. This is to ensure that the
912 * reply_q_sz (1 more than the max cmd that driver may send)
913 * does not exceed max cmds that the FW can support
914 */
915 instance->max_fw_cmds = instance->max_fw_cmds-1;
916 /* Only internal cmds (DCMD) need to have MFI frames */
917 instance->max_mfi_cmds = MEGASAS_INT_CMDS;
918
919 max_cmd = instance->max_fw_cmds;
920
921 fusion->reply_q_depth = ((max_cmd + 1 + 15)/16)*16;
922
923 fusion->request_alloc_sz =
924 sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *max_cmd;
925 fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION)
926 *(fusion->reply_q_depth);
927 fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE +
928 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE *
929 (max_cmd + 1)); /* Extra 1 for SMID 0 */
930
931 fusion->max_sge_in_main_msg =
932 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
933 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16;
934
935 fusion->max_sge_in_chain =
936 MEGASAS_MAX_SZ_CHAIN_FRAME / sizeof(union MPI2_SGE_IO_UNION);
937
938 instance->max_num_sge = fusion->max_sge_in_main_msg +
939 fusion->max_sge_in_chain - 2;
940
941 /* Used for pass thru MFI frame (DCMD) */
942 fusion->chain_offset_mfi_pthru =
943 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16;
944
945 fusion->chain_offset_io_request =
946 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
947 sizeof(union MPI2_SGE_IO_UNION))/16;
948
949 fusion->last_reply_idx = 0;
950
951 /*
952 * Allocate memory for descriptors
953 * Create a pool of commands
954 */
955 if (megasas_alloc_cmds(instance))
956 goto fail_alloc_mfi_cmds;
957 if (megasas_alloc_cmds_fusion(instance))
958 goto fail_alloc_cmds;
959
960 if (megasas_ioc_init_fusion(instance))
961 goto fail_ioc_init;
962
963 instance->flag_ieee = 1;
964
965 fusion->map_sz = sizeof(struct MR_FW_RAID_MAP) +
966 (sizeof(struct MR_LD_SPAN_MAP) *(MAX_LOGICAL_DRIVES - 1));
967
968 fusion->fast_path_io = 0;
969
970 for (i = 0; i < 2; i++) {
971 fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev,
972 fusion->map_sz,
973 &fusion->ld_map_phys[i],
974 GFP_KERNEL);
975 if (!fusion->ld_map[i]) {
976 printk(KERN_ERR "megasas: Could not allocate memory "
977 "for map info\n");
978 goto fail_map_info;
979 }
980 }
981
982 if (!megasas_get_map_info(instance))
983 megasas_sync_map_info(instance);
984
985 return 0;
986
987 fail_alloc_cmds:
988 fail_alloc_mfi_cmds:
989 fail_map_info:
990 if (i == 1)
991 dma_free_coherent(&instance->pdev->dev, fusion->map_sz,
992 fusion->ld_map[0], fusion->ld_map_phys[0]);
993 fail_ioc_init:
994 return 1;
995 }
996
997 /**
998 * megasas_fire_cmd_fusion - Sends command to the FW
999 * @frame_phys_addr : Physical address of cmd
1000 * @frame_count : Number of frames for the command
1001 * @regs : MFI register set
1002 */
1003 void
1004 megasas_fire_cmd_fusion(struct megasas_instance *instance,
1005 dma_addr_t req_desc_lo,
1006 u32 req_desc_hi,
1007 struct megasas_register_set __iomem *regs)
1008 {
1009 unsigned long flags;
1010
1011 spin_lock_irqsave(&instance->hba_lock, flags);
1012
1013 writel(req_desc_lo,
1014 &(regs)->inbound_low_queue_port);
1015 writel(req_desc_hi, &(regs)->inbound_high_queue_port);
1016 spin_unlock_irqrestore(&instance->hba_lock, flags);
1017 }
1018
1019 /**
1020 * map_cmd_status - Maps FW cmd status to OS cmd status
1021 * @cmd : Pointer to cmd
1022 * @status : status of cmd returned by FW
1023 * @ext_status : ext status of cmd returned by FW
1024 */
1025
1026 void
1027 map_cmd_status(struct megasas_cmd_fusion *cmd, u8 status, u8 ext_status)
1028 {
1029
1030 switch (status) {
1031
1032 case MFI_STAT_OK:
1033 cmd->scmd->result = DID_OK << 16;
1034 break;
1035
1036 case MFI_STAT_SCSI_IO_FAILED:
1037 case MFI_STAT_LD_INIT_IN_PROGRESS:
1038 cmd->scmd->result = (DID_ERROR << 16) | ext_status;
1039 break;
1040
1041 case MFI_STAT_SCSI_DONE_WITH_ERROR:
1042
1043 cmd->scmd->result = (DID_OK << 16) | ext_status;
1044 if (ext_status == SAM_STAT_CHECK_CONDITION) {
1045 memset(cmd->scmd->sense_buffer, 0,
1046 SCSI_SENSE_BUFFERSIZE);
1047 memcpy(cmd->scmd->sense_buffer, cmd->sense,
1048 SCSI_SENSE_BUFFERSIZE);
1049 cmd->scmd->result |= DRIVER_SENSE << 24;
1050 }
1051 break;
1052
1053 case MFI_STAT_LD_OFFLINE:
1054 case MFI_STAT_DEVICE_NOT_FOUND:
1055 cmd->scmd->result = DID_BAD_TARGET << 16;
1056 break;
1057
1058 default:
1059 printk(KERN_DEBUG "megasas: FW status %#x\n", status);
1060 cmd->scmd->result = DID_ERROR << 16;
1061 break;
1062 }
1063 }
1064
1065 /**
1066 * megasas_make_sgl_fusion - Prepares 32-bit SGL
1067 * @instance: Adapter soft state
1068 * @scp: SCSI command from the mid-layer
1069 * @sgl_ptr: SGL to be filled in
1070 * @cmd: cmd we are working on
1071 *
1072 * If successful, this function returns the number of SG elements.
1073 */
1074 static int
1075 megasas_make_sgl_fusion(struct megasas_instance *instance,
1076 struct scsi_cmnd *scp,
1077 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
1078 struct megasas_cmd_fusion *cmd)
1079 {
1080 int i, sg_processed;
1081 int sge_count, sge_idx;
1082 struct scatterlist *os_sgl;
1083 struct fusion_context *fusion;
1084
1085 fusion = instance->ctrl_context;
1086
1087 cmd->io_request->ChainOffset = 0;
1088
1089 sge_count = scsi_dma_map(scp);
1090
1091 BUG_ON(sge_count < 0);
1092
1093 if (sge_count > instance->max_num_sge || !sge_count)
1094 return sge_count;
1095
1096 if (sge_count > fusion->max_sge_in_main_msg) {
1097 /* One element to store the chain info */
1098 sge_idx = fusion->max_sge_in_main_msg - 1;
1099 } else
1100 sge_idx = sge_count;
1101
1102 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1103 sgl_ptr->Length = sg_dma_len(os_sgl);
1104 sgl_ptr->Address = sg_dma_address(os_sgl);
1105 sgl_ptr->Flags = 0;
1106 sgl_ptr++;
1107
1108 sg_processed = i + 1;
1109
1110 if ((sg_processed == (fusion->max_sge_in_main_msg - 1)) &&
1111 (sge_count > fusion->max_sge_in_main_msg)) {
1112
1113 struct MPI25_IEEE_SGE_CHAIN64 *sg_chain;
1114 cmd->io_request->ChainOffset =
1115 fusion->chain_offset_io_request;
1116 sg_chain = sgl_ptr;
1117 /* Prepare chain element */
1118 sg_chain->NextChainOffset = 0;
1119 sg_chain->Flags = (IEEE_SGE_FLAGS_CHAIN_ELEMENT |
1120 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR);
1121 sg_chain->Length = (sizeof(union MPI2_SGE_IO_UNION)
1122 *(sge_count - sg_processed));
1123 sg_chain->Address = cmd->sg_frame_phys_addr;
1124
1125 sgl_ptr =
1126 (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame;
1127 }
1128 }
1129
1130 return sge_count;
1131 }
1132
1133 /**
1134 * megasas_set_pd_lba - Sets PD LBA
1135 * @cdb: CDB
1136 * @cdb_len: cdb length
1137 * @start_blk: Start block of IO
1138 *
1139 * Used to set the PD LBA in CDB for FP IOs
1140 */
1141 void
1142 megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len,
1143 struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp,
1144 struct MR_FW_RAID_MAP_ALL *local_map_ptr, u32 ref_tag)
1145 {
1146 struct MR_LD_RAID *raid;
1147 u32 ld;
1148 u64 start_blk = io_info->pdBlock;
1149 u8 *cdb = io_request->CDB.CDB32;
1150 u32 num_blocks = io_info->numBlocks;
1151 u8 opcode, flagvals, groupnum, control;
1152
1153 /* Check if T10 PI (DIF) is enabled for this LD */
1154 ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr);
1155 raid = MR_LdRaidGet(ld, local_map_ptr);
1156 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) {
1157 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
1158 cdb[0] = MEGASAS_SCSI_VARIABLE_LENGTH_CMD;
1159 cdb[7] = MEGASAS_SCSI_ADDL_CDB_LEN;
1160
1161 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1162 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32;
1163 else
1164 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32;
1165 cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL;
1166
1167 /* LBA */
1168 cdb[12] = (u8)((start_blk >> 56) & 0xff);
1169 cdb[13] = (u8)((start_blk >> 48) & 0xff);
1170 cdb[14] = (u8)((start_blk >> 40) & 0xff);
1171 cdb[15] = (u8)((start_blk >> 32) & 0xff);
1172 cdb[16] = (u8)((start_blk >> 24) & 0xff);
1173 cdb[17] = (u8)((start_blk >> 16) & 0xff);
1174 cdb[18] = (u8)((start_blk >> 8) & 0xff);
1175 cdb[19] = (u8)(start_blk & 0xff);
1176
1177 /* Logical block reference tag */
1178 io_request->CDB.EEDP32.PrimaryReferenceTag =
1179 cpu_to_be32(ref_tag);
1180 io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0xffff;
1181
1182 io_request->DataLength = num_blocks * 512;
1183 io_request->IoFlags = 32; /* Specify 32-byte cdb */
1184
1185 /* Transfer length */
1186 cdb[28] = (u8)((num_blocks >> 24) & 0xff);
1187 cdb[29] = (u8)((num_blocks >> 16) & 0xff);
1188 cdb[30] = (u8)((num_blocks >> 8) & 0xff);
1189 cdb[31] = (u8)(num_blocks & 0xff);
1190
1191 /* set SCSI IO EEDPFlags */
1192 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) {
1193 io_request->EEDPFlags =
1194 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
1195 MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
1196 MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP |
1197 MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG |
1198 MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD;
1199 } else {
1200 io_request->EEDPFlags =
1201 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
1202 MPI2_SCSIIO_EEDPFLAGS_INSERT_OP;
1203 }
1204 io_request->Control |= (0x4 << 26);
1205 io_request->EEDPBlockSize = MEGASAS_EEDPBLOCKSIZE;
1206 } else {
1207 /* Some drives don't support 16/12 byte CDB's, convert to 10 */
1208 if (((cdb_len == 12) || (cdb_len == 16)) &&
1209 (start_blk <= 0xffffffff)) {
1210 if (cdb_len == 16) {
1211 opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10;
1212 flagvals = cdb[1];
1213 groupnum = cdb[14];
1214 control = cdb[15];
1215 } else {
1216 opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10;
1217 flagvals = cdb[1];
1218 groupnum = cdb[10];
1219 control = cdb[11];
1220 }
1221
1222 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
1223
1224 cdb[0] = opcode;
1225 cdb[1] = flagvals;
1226 cdb[6] = groupnum;
1227 cdb[9] = control;
1228
1229 /* Transfer length */
1230 cdb[8] = (u8)(num_blocks & 0xff);
1231 cdb[7] = (u8)((num_blocks >> 8) & 0xff);
1232
1233 cdb_len = 10;
1234 }
1235
1236 /* Normal case, just load LBA here */
1237 switch (cdb_len) {
1238 case 6:
1239 {
1240 u8 val = cdb[1] & 0xE0;
1241 cdb[3] = (u8)(start_blk & 0xff);
1242 cdb[2] = (u8)((start_blk >> 8) & 0xff);
1243 cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f);
1244 break;
1245 }
1246 case 10:
1247 cdb[5] = (u8)(start_blk & 0xff);
1248 cdb[4] = (u8)((start_blk >> 8) & 0xff);
1249 cdb[3] = (u8)((start_blk >> 16) & 0xff);
1250 cdb[2] = (u8)((start_blk >> 24) & 0xff);
1251 break;
1252 case 12:
1253 cdb[5] = (u8)(start_blk & 0xff);
1254 cdb[4] = (u8)((start_blk >> 8) & 0xff);
1255 cdb[3] = (u8)((start_blk >> 16) & 0xff);
1256 cdb[2] = (u8)((start_blk >> 24) & 0xff);
1257 break;
1258 case 16:
1259 cdb[9] = (u8)(start_blk & 0xff);
1260 cdb[8] = (u8)((start_blk >> 8) & 0xff);
1261 cdb[7] = (u8)((start_blk >> 16) & 0xff);
1262 cdb[6] = (u8)((start_blk >> 24) & 0xff);
1263 cdb[5] = (u8)((start_blk >> 32) & 0xff);
1264 cdb[4] = (u8)((start_blk >> 40) & 0xff);
1265 cdb[3] = (u8)((start_blk >> 48) & 0xff);
1266 cdb[2] = (u8)((start_blk >> 56) & 0xff);
1267 break;
1268 }
1269 }
1270 }
1271
1272 /**
1273 * megasas_build_ldio_fusion - Prepares IOs to devices
1274 * @instance: Adapter soft state
1275 * @scp: SCSI command
1276 * @cmd: Command to be prepared
1277 *
1278 * Prepares the io_request and chain elements (sg_frame) for IO
1279 * The IO can be for PD (Fast Path) or LD
1280 */
1281 void
1282 megasas_build_ldio_fusion(struct megasas_instance *instance,
1283 struct scsi_cmnd *scp,
1284 struct megasas_cmd_fusion *cmd)
1285 {
1286 u8 fp_possible;
1287 u32 start_lba_lo, start_lba_hi, device_id;
1288 struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
1289 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
1290 struct IO_REQUEST_INFO io_info;
1291 struct fusion_context *fusion;
1292 struct MR_FW_RAID_MAP_ALL *local_map_ptr;
1293
1294 device_id = MEGASAS_DEV_INDEX(instance, scp);
1295
1296 fusion = instance->ctrl_context;
1297
1298 io_request = cmd->io_request;
1299 io_request->RaidContext.VirtualDiskTgtId = device_id;
1300 io_request->RaidContext.status = 0;
1301 io_request->RaidContext.exStatus = 0;
1302
1303 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
1304
1305 start_lba_lo = 0;
1306 start_lba_hi = 0;
1307 fp_possible = 0;
1308
1309 /*
1310 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1311 */
1312 if (scp->cmd_len == 6) {
1313 io_request->DataLength = (u32) scp->cmnd[4];
1314 start_lba_lo = ((u32) scp->cmnd[1] << 16) |
1315 ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
1316
1317 start_lba_lo &= 0x1FFFFF;
1318 }
1319
1320 /*
1321 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1322 */
1323 else if (scp->cmd_len == 10) {
1324 io_request->DataLength = (u32) scp->cmnd[8] |
1325 ((u32) scp->cmnd[7] << 8);
1326 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1327 ((u32) scp->cmnd[3] << 16) |
1328 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1329 }
1330
1331 /*
1332 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1333 */
1334 else if (scp->cmd_len == 12) {
1335 io_request->DataLength = ((u32) scp->cmnd[6] << 24) |
1336 ((u32) scp->cmnd[7] << 16) |
1337 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1338 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1339 ((u32) scp->cmnd[3] << 16) |
1340 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1341 }
1342
1343 /*
1344 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1345 */
1346 else if (scp->cmd_len == 16) {
1347 io_request->DataLength = ((u32) scp->cmnd[10] << 24) |
1348 ((u32) scp->cmnd[11] << 16) |
1349 ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
1350 start_lba_lo = ((u32) scp->cmnd[6] << 24) |
1351 ((u32) scp->cmnd[7] << 16) |
1352 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1353
1354 start_lba_hi = ((u32) scp->cmnd[2] << 24) |
1355 ((u32) scp->cmnd[3] << 16) |
1356 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1357 }
1358
1359 memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO));
1360 io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo;
1361 io_info.numBlocks = io_request->DataLength;
1362 io_info.ldTgtId = device_id;
1363
1364 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1365 io_info.isRead = 1;
1366
1367 local_map_ptr = fusion->ld_map[(instance->map_id & 1)];
1368
1369 if ((MR_TargetIdToLdGet(device_id, local_map_ptr) >=
1370 MAX_LOGICAL_DRIVES) || (!fusion->fast_path_io)) {
1371 io_request->RaidContext.regLockFlags = 0;
1372 fp_possible = 0;
1373 } else {
1374 if (MR_BuildRaidContext(&io_info, &io_request->RaidContext,
1375 local_map_ptr))
1376 fp_possible = io_info.fpOkForIo;
1377 }
1378
1379 if (fp_possible) {
1380 megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp,
1381 local_map_ptr, start_lba_lo);
1382 io_request->DataLength = scsi_bufflen(scp);
1383 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
1384 cmd->request_desc->SCSIIO.RequestFlags =
1385 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY
1386 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1387 if ((fusion->load_balance_info[device_id].loadBalanceFlag) &&
1388 (io_info.isRead)) {
1389 io_info.devHandle =
1390 get_updated_dev_handle(
1391 &fusion->load_balance_info[device_id],
1392 &io_info);
1393 scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG;
1394 } else
1395 scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
1396 cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle;
1397 io_request->DevHandle = io_info.devHandle;
1398 } else {
1399 io_request->RaidContext.timeoutValue =
1400 local_map_ptr->raidMap.fpPdIoTimeoutSec;
1401 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
1402 io_request->DevHandle = device_id;
1403 cmd->request_desc->SCSIIO.RequestFlags =
1404 (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO
1405 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1406 } /* Not FP */
1407 }
1408
1409 /**
1410 * megasas_build_dcdb_fusion - Prepares IOs to devices
1411 * @instance: Adapter soft state
1412 * @scp: SCSI command
1413 * @cmd: Command to be prepared
1414 *
1415 * Prepares the io_request frame for non-io cmds
1416 */
1417 static void
1418 megasas_build_dcdb_fusion(struct megasas_instance *instance,
1419 struct scsi_cmnd *scmd,
1420 struct megasas_cmd_fusion *cmd)
1421 {
1422 u32 device_id;
1423 struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
1424 u16 pd_index = 0;
1425 struct MR_FW_RAID_MAP_ALL *local_map_ptr;
1426 struct fusion_context *fusion = instance->ctrl_context;
1427
1428 io_request = cmd->io_request;
1429 device_id = MEGASAS_DEV_INDEX(instance, scmd);
1430 pd_index = (scmd->device->channel * MEGASAS_MAX_DEV_PER_CHANNEL)
1431 +scmd->device->id;
1432 local_map_ptr = fusion->ld_map[(instance->map_id & 1)];
1433
1434 /* Check if this is a system PD I/O */
1435 if ((instance->pd_list[pd_index].driveState == MR_PD_STATE_SYSTEM) &&
1436 (instance->pd_list[pd_index].driveType == TYPE_DISK)) {
1437 io_request->Function = 0;
1438 io_request->DevHandle =
1439 local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
1440 io_request->RaidContext.timeoutValue =
1441 local_map_ptr->raidMap.fpPdIoTimeoutSec;
1442 io_request->RaidContext.regLockFlags = 0;
1443 io_request->RaidContext.regLockRowLBA = 0;
1444 io_request->RaidContext.regLockLength = 0;
1445 io_request->RaidContext.RAIDFlags =
1446 MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD <<
1447 MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT;
1448 cmd->request_desc->SCSIIO.RequestFlags =
1449 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
1450 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1451 } else {
1452 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
1453 io_request->DevHandle = device_id;
1454 cmd->request_desc->SCSIIO.RequestFlags =
1455 (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
1456 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1457 }
1458 io_request->RaidContext.VirtualDiskTgtId = device_id;
1459 io_request->LUN[0] = scmd->device->lun;
1460 io_request->DataLength = scsi_bufflen(scmd);
1461 }
1462
1463 /**
1464 * megasas_build_io_fusion - Prepares IOs to devices
1465 * @instance: Adapter soft state
1466 * @scp: SCSI command
1467 * @cmd: Command to be prepared
1468 *
1469 * Invokes helper functions to prepare request frames
1470 * and sets flags appropriate for IO/Non-IO cmd
1471 */
1472 int
1473 megasas_build_io_fusion(struct megasas_instance *instance,
1474 struct scsi_cmnd *scp,
1475 struct megasas_cmd_fusion *cmd)
1476 {
1477 u32 device_id, sge_count;
1478 struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request;
1479
1480 device_id = MEGASAS_DEV_INDEX(instance, scp);
1481
1482 /* Zero out some fields so they don't get reused */
1483 io_request->LUN[0] = 0;
1484 io_request->CDB.EEDP32.PrimaryReferenceTag = 0;
1485 io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0;
1486 io_request->EEDPFlags = 0;
1487 io_request->Control = 0;
1488 io_request->EEDPBlockSize = 0;
1489 io_request->IoFlags = 0;
1490 io_request->RaidContext.RAIDFlags = 0;
1491
1492 memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len);
1493 /*
1494 * Just the CDB length,rest of the Flags are zero
1495 * This will be modified for FP in build_ldio_fusion
1496 */
1497 io_request->IoFlags = scp->cmd_len;
1498
1499 if (megasas_is_ldio(scp))
1500 megasas_build_ldio_fusion(instance, scp, cmd);
1501 else
1502 megasas_build_dcdb_fusion(instance, scp, cmd);
1503
1504 /*
1505 * Construct SGL
1506 */
1507
1508 sge_count =
1509 megasas_make_sgl_fusion(instance, scp,
1510 (struct MPI25_IEEE_SGE_CHAIN64 *)
1511 &io_request->SGL, cmd);
1512
1513 if (sge_count > instance->max_num_sge) {
1514 printk(KERN_ERR "megasas: Error. sge_count (0x%x) exceeds "
1515 "max (0x%x) allowed\n", sge_count,
1516 instance->max_num_sge);
1517 return 1;
1518 }
1519
1520 io_request->RaidContext.numSGE = sge_count;
1521
1522 io_request->SGLFlags = MPI2_SGE_FLAGS_64_BIT_ADDRESSING;
1523
1524 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1525 io_request->Control |= MPI2_SCSIIO_CONTROL_WRITE;
1526 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1527 io_request->Control |= MPI2_SCSIIO_CONTROL_READ;
1528
1529 io_request->SGLOffset0 =
1530 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4;
1531
1532 io_request->SenseBufferLowAddress = cmd->sense_phys_addr;
1533 io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
1534
1535 cmd->scmd = scp;
1536 scp->SCp.ptr = (char *)cmd;
1537
1538 return 0;
1539 }
1540
1541 union MEGASAS_REQUEST_DESCRIPTOR_UNION *
1542 megasas_get_request_descriptor(struct megasas_instance *instance, u16 index)
1543 {
1544 u8 *p;
1545 struct fusion_context *fusion;
1546
1547 if (index >= instance->max_fw_cmds) {
1548 printk(KERN_ERR "megasas: Invalid SMID (0x%x)request for "
1549 "descriptor\n", index);
1550 return NULL;
1551 }
1552 fusion = instance->ctrl_context;
1553 p = fusion->req_frames_desc
1554 +sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *index;
1555
1556 return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p;
1557 }
1558
1559 /**
1560 * megasas_build_and_issue_cmd_fusion -Main routine for building and
1561 * issuing non IOCTL cmd
1562 * @instance: Adapter soft state
1563 * @scmd: pointer to scsi cmd from OS
1564 */
1565 static u32
1566 megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance,
1567 struct scsi_cmnd *scmd)
1568 {
1569 struct megasas_cmd_fusion *cmd;
1570 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
1571 u32 index;
1572 struct fusion_context *fusion;
1573
1574 fusion = instance->ctrl_context;
1575
1576 cmd = megasas_get_cmd_fusion(instance);
1577 if (!cmd)
1578 return SCSI_MLQUEUE_HOST_BUSY;
1579
1580 index = cmd->index;
1581
1582 req_desc = megasas_get_request_descriptor(instance, index-1);
1583 if (!req_desc)
1584 return 1;
1585
1586 req_desc->Words = 0;
1587 cmd->request_desc = req_desc;
1588 cmd->request_desc->Words = 0;
1589
1590 if (megasas_build_io_fusion(instance, scmd, cmd)) {
1591 megasas_return_cmd_fusion(instance, cmd);
1592 printk(KERN_ERR "megasas: Error building command.\n");
1593 cmd->request_desc = NULL;
1594 return 1;
1595 }
1596
1597 req_desc = cmd->request_desc;
1598 req_desc->SCSIIO.SMID = index;
1599
1600 if (cmd->io_request->ChainOffset != 0 &&
1601 cmd->io_request->ChainOffset != 0xF)
1602 printk(KERN_ERR "megasas: The chain offset value is not "
1603 "correct : %x\n", cmd->io_request->ChainOffset);
1604
1605 /*
1606 * Issue the command to the FW
1607 */
1608 atomic_inc(&instance->fw_outstanding);
1609
1610 instance->instancet->fire_cmd(instance,
1611 req_desc->u.low, req_desc->u.high,
1612 instance->reg_set);
1613
1614 return 0;
1615 }
1616
1617 /**
1618 * complete_cmd_fusion - Completes command
1619 * @instance: Adapter soft state
1620 * Completes all commands that is in reply descriptor queue
1621 */
1622 int
1623 complete_cmd_fusion(struct megasas_instance *instance)
1624 {
1625 union MPI2_REPLY_DESCRIPTORS_UNION *desc;
1626 struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc;
1627 struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req;
1628 struct fusion_context *fusion;
1629 struct megasas_cmd *cmd_mfi;
1630 struct megasas_cmd_fusion *cmd_fusion;
1631 u16 smid, num_completed;
1632 u8 reply_descript_type, arm;
1633 u32 status, extStatus, device_id;
1634 union desc_value d_val;
1635 struct LD_LOAD_BALANCE_INFO *lbinfo;
1636
1637 fusion = instance->ctrl_context;
1638
1639 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
1640 return IRQ_HANDLED;
1641
1642 desc = fusion->reply_frames_desc;
1643 desc += fusion->last_reply_idx;
1644
1645 reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
1646
1647 d_val.word = desc->Words;
1648
1649 reply_descript_type = reply_desc->ReplyFlags &
1650 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
1651
1652 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
1653 return IRQ_NONE;
1654
1655 d_val.word = desc->Words;
1656
1657 num_completed = 0;
1658
1659 while ((d_val.u.low != UINT_MAX) && (d_val.u.high != UINT_MAX)) {
1660 smid = reply_desc->SMID;
1661
1662 cmd_fusion = fusion->cmd_list[smid - 1];
1663
1664 scsi_io_req =
1665 (struct MPI2_RAID_SCSI_IO_REQUEST *)
1666 cmd_fusion->io_request;
1667
1668 if (cmd_fusion->scmd)
1669 cmd_fusion->scmd->SCp.ptr = NULL;
1670
1671 status = scsi_io_req->RaidContext.status;
1672 extStatus = scsi_io_req->RaidContext.exStatus;
1673
1674 switch (scsi_io_req->Function) {
1675 case MPI2_FUNCTION_SCSI_IO_REQUEST: /*Fast Path IO.*/
1676 /* Update load balancing info */
1677 device_id = MEGASAS_DEV_INDEX(instance,
1678 cmd_fusion->scmd);
1679 lbinfo = &fusion->load_balance_info[device_id];
1680 if (cmd_fusion->scmd->SCp.Status &
1681 MEGASAS_LOAD_BALANCE_FLAG) {
1682 arm = lbinfo->raid1DevHandle[0] ==
1683 cmd_fusion->io_request->DevHandle ? 0 :
1684 1;
1685 atomic_dec(&lbinfo->scsi_pending_cmds[arm]);
1686 cmd_fusion->scmd->SCp.Status &=
1687 ~MEGASAS_LOAD_BALANCE_FLAG;
1688 }
1689 if (reply_descript_type ==
1690 MPI2_RPY_DESCRIPT_FLAGS_SCSI_IO_SUCCESS) {
1691 if (megasas_dbg_lvl == 5)
1692 printk(KERN_ERR "\nmegasas: FAST Path "
1693 "IO Success\n");
1694 }
1695 /* Fall thru and complete IO */
1696 case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */
1697 /* Map the FW Cmd Status */
1698 map_cmd_status(cmd_fusion, status, extStatus);
1699 scsi_dma_unmap(cmd_fusion->scmd);
1700 cmd_fusion->scmd->scsi_done(cmd_fusion->scmd);
1701 scsi_io_req->RaidContext.status = 0;
1702 scsi_io_req->RaidContext.exStatus = 0;
1703 megasas_return_cmd_fusion(instance, cmd_fusion);
1704 atomic_dec(&instance->fw_outstanding);
1705
1706 break;
1707 case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */
1708 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
1709 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
1710 cmd_fusion->flags = 0;
1711 megasas_return_cmd_fusion(instance, cmd_fusion);
1712
1713 break;
1714 }
1715
1716 fusion->last_reply_idx++;
1717 if (fusion->last_reply_idx >= fusion->reply_q_depth)
1718 fusion->last_reply_idx = 0;
1719
1720 desc->Words = ULLONG_MAX;
1721 num_completed++;
1722
1723 /* Get the next reply descriptor */
1724 if (!fusion->last_reply_idx)
1725 desc = fusion->reply_frames_desc;
1726 else
1727 desc++;
1728
1729 reply_desc =
1730 (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
1731
1732 d_val.word = desc->Words;
1733
1734 reply_descript_type = reply_desc->ReplyFlags &
1735 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
1736
1737 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
1738 break;
1739 }
1740
1741 if (!num_completed)
1742 return IRQ_NONE;
1743
1744 wmb();
1745 writel(fusion->last_reply_idx,
1746 &instance->reg_set->reply_post_host_index);
1747
1748 return IRQ_HANDLED;
1749 }
1750
1751 /**
1752 * megasas_complete_cmd_dpc_fusion - Completes command
1753 * @instance: Adapter soft state
1754 *
1755 * Tasklet to complete cmds
1756 */
1757 void
1758 megasas_complete_cmd_dpc_fusion(unsigned long instance_addr)
1759 {
1760 struct megasas_instance *instance =
1761 (struct megasas_instance *)instance_addr;
1762 unsigned long flags;
1763
1764 /* If we have already declared adapter dead, donot complete cmds */
1765 spin_lock_irqsave(&instance->hba_lock, flags);
1766 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
1767 spin_unlock_irqrestore(&instance->hba_lock, flags);
1768 return;
1769 }
1770 spin_unlock_irqrestore(&instance->hba_lock, flags);
1771
1772 spin_lock_irqsave(&instance->completion_lock, flags);
1773 complete_cmd_fusion(instance);
1774 spin_unlock_irqrestore(&instance->completion_lock, flags);
1775 }
1776
1777 /**
1778 * megasas_isr_fusion - isr entry point
1779 */
1780 irqreturn_t megasas_isr_fusion(int irq, void *devp)
1781 {
1782 struct megasas_instance *instance = (struct megasas_instance *)devp;
1783 u32 mfiStatus, fw_state;
1784
1785 if (!instance->msi_flag) {
1786 mfiStatus = instance->instancet->clear_intr(instance->reg_set);
1787 if (!mfiStatus)
1788 return IRQ_NONE;
1789 }
1790
1791 /* If we are resetting, bail */
1792 if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags))
1793 return IRQ_HANDLED;
1794
1795 if (!complete_cmd_fusion(instance)) {
1796 /* If we didn't complete any commands, check for FW fault */
1797 fw_state = instance->instancet->read_fw_status_reg(
1798 instance->reg_set) & MFI_STATE_MASK;
1799 if (fw_state == MFI_STATE_FAULT)
1800 schedule_work(&instance->work_init);
1801 }
1802
1803 return IRQ_HANDLED;
1804 }
1805
1806 /**
1807 * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru
1808 * @instance: Adapter soft state
1809 * mfi_cmd: megasas_cmd pointer
1810 *
1811 */
1812 u8
1813 build_mpt_mfi_pass_thru(struct megasas_instance *instance,
1814 struct megasas_cmd *mfi_cmd)
1815 {
1816 struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain;
1817 struct MPI2_RAID_SCSI_IO_REQUEST *io_req;
1818 struct megasas_cmd_fusion *cmd;
1819 struct fusion_context *fusion;
1820 struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr;
1821
1822 cmd = megasas_get_cmd_fusion(instance);
1823 if (!cmd)
1824 return 1;
1825
1826 /* Save the smid. To be used for returning the cmd */
1827 mfi_cmd->context.smid = cmd->index;
1828
1829 cmd->sync_cmd_idx = mfi_cmd->index;
1830
1831 /*
1832 * For cmds where the flag is set, store the flag and check
1833 * on completion. For cmds with this flag, don't call
1834 * megasas_complete_cmd
1835 */
1836
1837 if (frame_hdr->flags & MFI_FRAME_DONT_POST_IN_REPLY_QUEUE)
1838 cmd->flags = MFI_FRAME_DONT_POST_IN_REPLY_QUEUE;
1839
1840 fusion = instance->ctrl_context;
1841 io_req = cmd->io_request;
1842 mpi25_ieee_chain =
1843 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain;
1844
1845 io_req->Function = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST;
1846 io_req->SGLOffset0 = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST,
1847 SGL) / 4;
1848 io_req->ChainOffset = fusion->chain_offset_mfi_pthru;
1849
1850 mpi25_ieee_chain->Address = mfi_cmd->frame_phys_addr;
1851
1852 mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
1853 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR;
1854
1855 mpi25_ieee_chain->Length = MEGASAS_MAX_SZ_CHAIN_FRAME;
1856
1857 return 0;
1858 }
1859
1860 /**
1861 * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd
1862 * @instance: Adapter soft state
1863 * @cmd: mfi cmd to build
1864 *
1865 */
1866 union MEGASAS_REQUEST_DESCRIPTOR_UNION *
1867 build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
1868 {
1869 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
1870 u16 index;
1871
1872 if (build_mpt_mfi_pass_thru(instance, cmd)) {
1873 printk(KERN_ERR "Couldn't build MFI pass thru cmd\n");
1874 return NULL;
1875 }
1876
1877 index = cmd->context.smid;
1878
1879 req_desc = megasas_get_request_descriptor(instance, index - 1);
1880
1881 if (!req_desc)
1882 return NULL;
1883
1884 req_desc->Words = 0;
1885 req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
1886 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1887
1888 req_desc->SCSIIO.SMID = index;
1889
1890 return req_desc;
1891 }
1892
1893 /**
1894 * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd
1895 * @instance: Adapter soft state
1896 * @cmd: mfi cmd pointer
1897 *
1898 */
1899 void
1900 megasas_issue_dcmd_fusion(struct megasas_instance *instance,
1901 struct megasas_cmd *cmd)
1902 {
1903 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
1904 union desc_value d_val;
1905
1906 req_desc = build_mpt_cmd(instance, cmd);
1907 if (!req_desc) {
1908 printk(KERN_ERR "Couldn't issue MFI pass thru cmd\n");
1909 return;
1910 }
1911 d_val.word = req_desc->Words;
1912
1913 instance->instancet->fire_cmd(instance, req_desc->u.low,
1914 req_desc->u.high, instance->reg_set);
1915 }
1916
1917 /**
1918 * megasas_release_fusion - Reverses the FW initialization
1919 * @intance: Adapter soft state
1920 */
1921 void
1922 megasas_release_fusion(struct megasas_instance *instance)
1923 {
1924 megasas_free_cmds(instance);
1925 megasas_free_cmds_fusion(instance);
1926
1927 iounmap(instance->reg_set);
1928
1929 pci_release_selected_regions(instance->pdev, instance->bar);
1930 }
1931
1932 /**
1933 * megasas_read_fw_status_reg_fusion - returns the current FW status value
1934 * @regs: MFI register set
1935 */
1936 static u32
1937 megasas_read_fw_status_reg_fusion(struct megasas_register_set __iomem *regs)
1938 {
1939 return readl(&(regs)->outbound_scratch_pad);
1940 }
1941
1942 /**
1943 * megasas_adp_reset_fusion - For controller reset
1944 * @regs: MFI register set
1945 */
1946 static int
1947 megasas_adp_reset_fusion(struct megasas_instance *instance,
1948 struct megasas_register_set __iomem *regs)
1949 {
1950 return 0;
1951 }
1952
1953 /**
1954 * megasas_check_reset_fusion - For controller reset check
1955 * @regs: MFI register set
1956 */
1957 static int
1958 megasas_check_reset_fusion(struct megasas_instance *instance,
1959 struct megasas_register_set __iomem *regs)
1960 {
1961 return 0;
1962 }
1963
1964 /* This function waits for outstanding commands on fusion to complete */
1965 int megasas_wait_for_outstanding_fusion(struct megasas_instance *instance)
1966 {
1967 int i, outstanding, retval = 0;
1968 u32 fw_state, wait_time = MEGASAS_RESET_WAIT_TIME;
1969
1970 for (i = 0; i < wait_time; i++) {
1971 /* Check if firmware is in fault state */
1972 fw_state = instance->instancet->read_fw_status_reg(
1973 instance->reg_set) & MFI_STATE_MASK;
1974 if (fw_state == MFI_STATE_FAULT) {
1975 printk(KERN_WARNING "megasas: Found FW in FAULT state,"
1976 " will reset adapter.\n");
1977 retval = 1;
1978 goto out;
1979 }
1980
1981 outstanding = atomic_read(&instance->fw_outstanding);
1982 if (!outstanding)
1983 goto out;
1984
1985 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
1986 printk(KERN_NOTICE "megasas: [%2d]waiting for %d "
1987 "commands to complete\n", i, outstanding);
1988 megasas_complete_cmd_dpc_fusion(
1989 (unsigned long)instance);
1990 }
1991 msleep(1000);
1992 }
1993
1994 if (atomic_read(&instance->fw_outstanding)) {
1995 printk("megaraid_sas: pending commands remain after waiting, "
1996 "will reset adapter.\n");
1997 retval = 1;
1998 }
1999 out:
2000 return retval;
2001 }
2002
2003 void megasas_reset_reply_desc(struct megasas_instance *instance)
2004 {
2005 int i;
2006 struct fusion_context *fusion;
2007 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
2008
2009 fusion = instance->ctrl_context;
2010 fusion->last_reply_idx = 0;
2011 reply_desc = fusion->reply_frames_desc;
2012 for (i = 0 ; i < fusion->reply_q_depth; i++, reply_desc++)
2013 reply_desc->Words = ULLONG_MAX;
2014 }
2015
2016 /* Core fusion reset function */
2017 int megasas_reset_fusion(struct Scsi_Host *shost)
2018 {
2019 int retval = SUCCESS, i, j, retry = 0;
2020 struct megasas_instance *instance;
2021 struct megasas_cmd_fusion *cmd_fusion;
2022 struct fusion_context *fusion;
2023 struct megasas_cmd *cmd_mfi;
2024 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2025 u32 host_diag, abs_state;
2026
2027 instance = (struct megasas_instance *)shost->hostdata;
2028 fusion = instance->ctrl_context;
2029
2030 mutex_lock(&instance->reset_mutex);
2031 set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
2032 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
2033 instance->instancet->disable_intr(instance->reg_set);
2034 msleep(1000);
2035
2036 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
2037 printk(KERN_WARNING "megaraid_sas: Hardware critical error, "
2038 "returning FAILED.\n");
2039 retval = FAILED;
2040 goto out;
2041 }
2042
2043 /* First try waiting for commands to complete */
2044 if (megasas_wait_for_outstanding_fusion(instance)) {
2045 printk(KERN_WARNING "megaraid_sas: resetting fusion "
2046 "adapter.\n");
2047 /* Now return commands back to the OS */
2048 for (i = 0 ; i < instance->max_fw_cmds; i++) {
2049 cmd_fusion = fusion->cmd_list[i];
2050 if (cmd_fusion->scmd) {
2051 scsi_dma_unmap(cmd_fusion->scmd);
2052 cmd_fusion->scmd->result = (DID_RESET << 16);
2053 cmd_fusion->scmd->scsi_done(cmd_fusion->scmd);
2054 megasas_return_cmd_fusion(instance, cmd_fusion);
2055 atomic_dec(&instance->fw_outstanding);
2056 }
2057 }
2058
2059 if (instance->disableOnlineCtrlReset == 1) {
2060 /* Reset not supported, kill adapter */
2061 printk(KERN_WARNING "megaraid_sas: Reset not supported"
2062 ", killing adapter.\n");
2063 megaraid_sas_kill_hba(instance);
2064 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2065 retval = FAILED;
2066 goto out;
2067 }
2068
2069 /* Now try to reset the chip */
2070 for (i = 0; i < MEGASAS_FUSION_MAX_RESET_TRIES; i++) {
2071 writel(MPI2_WRSEQ_FLUSH_KEY_VALUE,
2072 &instance->reg_set->fusion_seq_offset);
2073 writel(MPI2_WRSEQ_1ST_KEY_VALUE,
2074 &instance->reg_set->fusion_seq_offset);
2075 writel(MPI2_WRSEQ_2ND_KEY_VALUE,
2076 &instance->reg_set->fusion_seq_offset);
2077 writel(MPI2_WRSEQ_3RD_KEY_VALUE,
2078 &instance->reg_set->fusion_seq_offset);
2079 writel(MPI2_WRSEQ_4TH_KEY_VALUE,
2080 &instance->reg_set->fusion_seq_offset);
2081 writel(MPI2_WRSEQ_5TH_KEY_VALUE,
2082 &instance->reg_set->fusion_seq_offset);
2083 writel(MPI2_WRSEQ_6TH_KEY_VALUE,
2084 &instance->reg_set->fusion_seq_offset);
2085
2086 /* Check that the diag write enable (DRWE) bit is on */
2087 host_diag = readl(&instance->reg_set->fusion_host_diag);
2088 while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) {
2089 msleep(100);
2090 host_diag =
2091 readl(&instance->reg_set->fusion_host_diag);
2092 if (retry++ == 100) {
2093 printk(KERN_WARNING "megaraid_sas: "
2094 "Host diag unlock failed!\n");
2095 break;
2096 }
2097 }
2098 if (!(host_diag & HOST_DIAG_WRITE_ENABLE))
2099 continue;
2100
2101 /* Send chip reset command */
2102 writel(host_diag | HOST_DIAG_RESET_ADAPTER,
2103 &instance->reg_set->fusion_host_diag);
2104 msleep(3000);
2105
2106 /* Make sure reset adapter bit is cleared */
2107 host_diag = readl(&instance->reg_set->fusion_host_diag);
2108 retry = 0;
2109 while (host_diag & HOST_DIAG_RESET_ADAPTER) {
2110 msleep(100);
2111 host_diag =
2112 readl(&instance->reg_set->fusion_host_diag);
2113 if (retry++ == 1000) {
2114 printk(KERN_WARNING "megaraid_sas: "
2115 "Diag reset adapter never "
2116 "cleared!\n");
2117 break;
2118 }
2119 }
2120 if (host_diag & HOST_DIAG_RESET_ADAPTER)
2121 continue;
2122
2123 abs_state =
2124 instance->instancet->read_fw_status_reg(
2125 instance->reg_set);
2126 retry = 0;
2127
2128 while ((abs_state <= MFI_STATE_FW_INIT) &&
2129 (retry++ < 1000)) {
2130 msleep(100);
2131 abs_state =
2132 instance->instancet->read_fw_status_reg(
2133 instance->reg_set);
2134 }
2135 if (abs_state <= MFI_STATE_FW_INIT) {
2136 printk(KERN_WARNING "megaraid_sas: firmware "
2137 "state < MFI_STATE_FW_INIT, state = "
2138 "0x%x\n", abs_state);
2139 continue;
2140 }
2141
2142 /* Wait for FW to become ready */
2143 if (megasas_transition_to_ready(instance)) {
2144 printk(KERN_WARNING "megaraid_sas: Failed to "
2145 "transition controller to ready.\n");
2146 continue;
2147 }
2148
2149 megasas_reset_reply_desc(instance);
2150 if (megasas_ioc_init_fusion(instance)) {
2151 printk(KERN_WARNING "megaraid_sas: "
2152 "megasas_ioc_init_fusion() failed!\n");
2153 continue;
2154 }
2155
2156 instance->instancet->enable_intr(instance->reg_set);
2157 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
2158
2159 /* Re-fire management commands */
2160 for (j = 0 ; j < instance->max_fw_cmds; j++) {
2161 cmd_fusion = fusion->cmd_list[j];
2162 if (cmd_fusion->sync_cmd_idx !=
2163 (u32)ULONG_MAX) {
2164 cmd_mfi =
2165 instance->
2166 cmd_list[cmd_fusion->sync_cmd_idx];
2167 if (cmd_mfi->frame->dcmd.opcode ==
2168 MR_DCMD_LD_MAP_GET_INFO) {
2169 megasas_return_cmd(instance,
2170 cmd_mfi);
2171 megasas_return_cmd_fusion(
2172 instance, cmd_fusion);
2173 } else {
2174 req_desc =
2175 megasas_get_request_descriptor(
2176 instance,
2177 cmd_mfi->context.smid
2178 -1);
2179 if (!req_desc)
2180 printk(KERN_WARNING
2181 "req_desc NULL"
2182 "\n");
2183 else {
2184 instance->instancet->
2185 fire_cmd(instance,
2186 req_desc->
2187 u.low,
2188 req_desc->
2189 u.high,
2190 instance->
2191 reg_set);
2192 }
2193 }
2194 }
2195 }
2196
2197 /* Reset load balance info */
2198 memset(fusion->load_balance_info, 0,
2199 sizeof(struct LD_LOAD_BALANCE_INFO)
2200 *MAX_LOGICAL_DRIVES);
2201
2202 if (!megasas_get_map_info(instance))
2203 megasas_sync_map_info(instance);
2204
2205 /* Adapter reset completed successfully */
2206 printk(KERN_WARNING "megaraid_sas: Reset "
2207 "successful.\n");
2208 retval = SUCCESS;
2209 goto out;
2210 }
2211 /* Reset failed, kill the adapter */
2212 printk(KERN_WARNING "megaraid_sas: Reset failed, killing "
2213 "adapter.\n");
2214 megaraid_sas_kill_hba(instance);
2215 retval = FAILED;
2216 } else {
2217 instance->instancet->enable_intr(instance->reg_set);
2218 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
2219 }
2220 out:
2221 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
2222 mutex_unlock(&instance->reset_mutex);
2223 return retval;
2224 }
2225
2226 /* Fusion OCR work queue */
2227 void megasas_fusion_ocr_wq(struct work_struct *work)
2228 {
2229 struct megasas_instance *instance =
2230 container_of(work, struct megasas_instance, work_init);
2231
2232 megasas_reset_fusion(instance->host);
2233 }
2234
2235 struct megasas_instance_template megasas_instance_template_fusion = {
2236 .fire_cmd = megasas_fire_cmd_fusion,
2237 .enable_intr = megasas_enable_intr_fusion,
2238 .disable_intr = megasas_disable_intr_fusion,
2239 .clear_intr = megasas_clear_intr_fusion,
2240 .read_fw_status_reg = megasas_read_fw_status_reg_fusion,
2241 .adp_reset = megasas_adp_reset_fusion,
2242 .check_reset = megasas_check_reset_fusion,
2243 .service_isr = megasas_isr_fusion,
2244 .tasklet = megasas_complete_cmd_dpc_fusion,
2245 .init_adapter = megasas_init_adapter_fusion,
2246 .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion,
2247 .issue_dcmd = megasas_issue_dcmd_fusion,
2248 };
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