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interconnect: qcom: Fix Kconfig indentation
[linux/fpc-iii.git] / drivers / scsi / megaraid / megaraid_sas_fusion.c
blobe301458bcbae791638458087712d5b6cead51d83
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Linux MegaRAID driver for SAS based RAID controllers
4 *
5 * Copyright (c) 2009-2013 LSI Corporation
6 * Copyright (c) 2013-2016 Avago Technologies
7 * Copyright (c) 2016-2018 Broadcom Inc.
8 *
9 * FILE: megaraid_sas_fusion.c
10 *
11 * Authors: Broadcom Inc.
12 * Sumant Patro
13 * Adam Radford
14 * Kashyap Desai <kashyap.desai@broadcom.com>
15 * Sumit Saxena <sumit.saxena@broadcom.com>
16 *
17 * Send feedback to: megaraidlinux.pdl@broadcom.com
18 */
19
20 #include <linux/kernel.h>
21 #include <linux/types.h>
22 #include <linux/pci.h>
23 #include <linux/list.h>
24 #include <linux/moduleparam.h>
25 #include <linux/module.h>
26 #include <linux/spinlock.h>
27 #include <linux/interrupt.h>
28 #include <linux/delay.h>
29 #include <linux/uio.h>
30 #include <linux/uaccess.h>
31 #include <linux/fs.h>
32 #include <linux/compat.h>
33 #include <linux/blkdev.h>
34 #include <linux/mutex.h>
35 #include <linux/poll.h>
36 #include <linux/vmalloc.h>
37 #include <linux/workqueue.h>
38 #include <linux/irq_poll.h>
39
40 #include <scsi/scsi.h>
41 #include <scsi/scsi_cmnd.h>
42 #include <scsi/scsi_device.h>
43 #include <scsi/scsi_host.h>
44 #include <scsi/scsi_dbg.h>
45 #include <linux/dmi.h>
46
47 #include "megaraid_sas_fusion.h"
48 #include "megaraid_sas.h"
49
50
51 extern void megasas_free_cmds(struct megasas_instance *instance);
52 extern struct megasas_cmd *megasas_get_cmd(struct megasas_instance
53 *instance);
54 extern void
55 megasas_complete_cmd(struct megasas_instance *instance,
56 struct megasas_cmd *cmd, u8 alt_status);
57 int
58 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
59 int seconds);
60
61 void
62 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd);
63 int megasas_alloc_cmds(struct megasas_instance *instance);
64 int
65 megasas_clear_intr_fusion(struct megasas_instance *instance);
66 int
67 megasas_issue_polled(struct megasas_instance *instance,
68 struct megasas_cmd *cmd);
69 void
70 megasas_check_and_restore_queue_depth(struct megasas_instance *instance);
71
72 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
73 void megaraid_sas_kill_hba(struct megasas_instance *instance);
74
75 extern u32 megasas_dbg_lvl;
76 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
77 int initial);
78 void megasas_start_timer(struct megasas_instance *instance);
79 extern struct megasas_mgmt_info megasas_mgmt_info;
80 extern unsigned int resetwaittime;
81 extern unsigned int dual_qdepth_disable;
82 static void megasas_free_rdpq_fusion(struct megasas_instance *instance);
83 static void megasas_free_reply_fusion(struct megasas_instance *instance);
84 static inline
85 void megasas_configure_queue_sizes(struct megasas_instance *instance);
86 static void megasas_fusion_crash_dump(struct megasas_instance *instance);
87 extern u32 megasas_readl(struct megasas_instance *instance,
88 const volatile void __iomem *addr);
89
90 /**
91 * megasas_adp_reset_wait_for_ready - initiate chip reset and wait for
92 * controller to come to ready state
93 * @instance - adapter's soft state
94 * @do_adp_reset - If true, do a chip reset
95 * @ocr_context - If called from OCR context this will
96 * be set to 1, else 0
97 *
98 * This function initates a chip reset followed by a wait for controller to
99 * transition to ready state.
100 * During this, driver will block all access to PCI config space from userspace
101 */
102 int
103 megasas_adp_reset_wait_for_ready(struct megasas_instance *instance,
104 bool do_adp_reset,
105 int ocr_context)
106 {
107 int ret = FAILED;
108
109 /*
110 * Block access to PCI config space from userspace
111 * when diag reset is initiated from driver
112 */
113 if (megasas_dbg_lvl & OCR_DEBUG)
114 dev_info(&instance->pdev->dev,
115 "Block access to PCI config space %s %d\n",
116 __func__, __LINE__);
117
118 pci_cfg_access_lock(instance->pdev);
119
120 if (do_adp_reset) {
121 if (instance->instancet->adp_reset
122 (instance, instance->reg_set))
123 goto out;
124 }
125
126 /* Wait for FW to become ready */
127 if (megasas_transition_to_ready(instance, ocr_context)) {
128 dev_warn(&instance->pdev->dev,
129 "Failed to transition controller to ready for scsi%d.\n",
130 instance->host->host_no);
131 goto out;
132 }
133
134 ret = SUCCESS;
135 out:
136 if (megasas_dbg_lvl & OCR_DEBUG)
137 dev_info(&instance->pdev->dev,
138 "Unlock access to PCI config space %s %d\n",
139 __func__, __LINE__);
140
141 pci_cfg_access_unlock(instance->pdev);
142
143 return ret;
144 }
145
146 /**
147 * megasas_check_same_4gb_region - check if allocation
148 * crosses same 4GB boundary or not
149 * @instance - adapter's soft instance
150 * start_addr - start address of DMA allocation
151 * size - size of allocation in bytes
152 * return - true : allocation does not cross same
153 * 4GB boundary
154 * false: allocation crosses same
155 * 4GB boundary
156 */
157 static inline bool megasas_check_same_4gb_region
158 (struct megasas_instance *instance, dma_addr_t start_addr, size_t size)
159 {
160 dma_addr_t end_addr;
161
162 end_addr = start_addr + size;
163
164 if (upper_32_bits(start_addr) != upper_32_bits(end_addr)) {
165 dev_err(&instance->pdev->dev,
166 "Failed to get same 4GB boundary: start_addr: 0x%llx end_addr: 0x%llx\n",
167 (unsigned long long)start_addr,
168 (unsigned long long)end_addr);
169 return false;
170 }
171
172 return true;
173 }
174
175 /**
176 * megasas_enable_intr_fusion - Enables interrupts
177 * @regs: MFI register set
178 */
179 void
180 megasas_enable_intr_fusion(struct megasas_instance *instance)
181 {
182 struct megasas_register_set __iomem *regs;
183 regs = instance->reg_set;
184
185 instance->mask_interrupts = 0;
186 /* For Thunderbolt/Invader also clear intr on enable */
187 writel(~0, &regs->outbound_intr_status);
188 readl(&regs->outbound_intr_status);
189
190 writel(~MFI_FUSION_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
191
192 /* Dummy readl to force pci flush */
193 dev_info(&instance->pdev->dev, "%s is called outbound_intr_mask:0x%08x\n",
194 __func__, readl(&regs->outbound_intr_mask));
195 }
196
197 /**
198 * megasas_disable_intr_fusion - Disables interrupt
199 * @regs: MFI register set
200 */
201 void
202 megasas_disable_intr_fusion(struct megasas_instance *instance)
203 {
204 u32 mask = 0xFFFFFFFF;
205 struct megasas_register_set __iomem *regs;
206 regs = instance->reg_set;
207 instance->mask_interrupts = 1;
208
209 writel(mask, &regs->outbound_intr_mask);
210 /* Dummy readl to force pci flush */
211 dev_info(&instance->pdev->dev, "%s is called outbound_intr_mask:0x%08x\n",
212 __func__, readl(&regs->outbound_intr_mask));
213 }
214
215 int
216 megasas_clear_intr_fusion(struct megasas_instance *instance)
217 {
218 u32 status;
219 struct megasas_register_set __iomem *regs;
220 regs = instance->reg_set;
221 /*
222 * Check if it is our interrupt
223 */
224 status = megasas_readl(instance,
225 &regs->outbound_intr_status);
226
227 if (status & 1) {
228 writel(status, &regs->outbound_intr_status);
229 readl(&regs->outbound_intr_status);
230 return 1;
231 }
232 if (!(status & MFI_FUSION_ENABLE_INTERRUPT_MASK))
233 return 0;
234
235 return 1;
236 }
237
238 /**
239 * megasas_get_cmd_fusion - Get a command from the free pool
240 * @instance: Adapter soft state
241 *
242 * Returns a blk_tag indexed mpt frame
243 */
244 inline struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance
245 *instance, u32 blk_tag)
246 {
247 struct fusion_context *fusion;
248
249 fusion = instance->ctrl_context;
250 return fusion->cmd_list[blk_tag];
251 }
252
253 /**
254 * megasas_return_cmd_fusion - Return a cmd to free command pool
255 * @instance: Adapter soft state
256 * @cmd: Command packet to be returned to free command pool
257 */
258 inline void megasas_return_cmd_fusion(struct megasas_instance *instance,
259 struct megasas_cmd_fusion *cmd)
260 {
261 cmd->scmd = NULL;
262 memset(cmd->io_request, 0, MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE);
263 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
264 cmd->cmd_completed = false;
265 }
266
267 /**
268 * megasas_write_64bit_req_desc - PCI writes 64bit request descriptor
269 * @instance: Adapter soft state
270 * @req_desc: 64bit Request descriptor
271 */
272 static void
273 megasas_write_64bit_req_desc(struct megasas_instance *instance,
274 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc)
275 {
276 #if defined(writeq) && defined(CONFIG_64BIT)
277 u64 req_data = (((u64)le32_to_cpu(req_desc->u.high) << 32) |
278 le32_to_cpu(req_desc->u.low));
279 writeq(req_data, &instance->reg_set->inbound_low_queue_port);
280 #else
281 unsigned long flags;
282 spin_lock_irqsave(&instance->hba_lock, flags);
283 writel(le32_to_cpu(req_desc->u.low),
284 &instance->reg_set->inbound_low_queue_port);
285 writel(le32_to_cpu(req_desc->u.high),
286 &instance->reg_set->inbound_high_queue_port);
287 spin_unlock_irqrestore(&instance->hba_lock, flags);
288 #endif
289 }
290
291 /**
292 * megasas_fire_cmd_fusion - Sends command to the FW
293 * @instance: Adapter soft state
294 * @req_desc: 32bit or 64bit Request descriptor
295 *
296 * Perform PCI Write. AERO SERIES supports 32 bit Descriptor.
297 * Prior to AERO_SERIES support 64 bit Descriptor.
298 */
299 static void
300 megasas_fire_cmd_fusion(struct megasas_instance *instance,
301 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc)
302 {
303 if (instance->atomic_desc_support)
304 writel(le32_to_cpu(req_desc->u.low),
305 &instance->reg_set->inbound_single_queue_port);
306 else
307 megasas_write_64bit_req_desc(instance, req_desc);
308 }
309
310 /**
311 * megasas_fusion_update_can_queue - Do all Adapter Queue depth related calculations here
312 * @instance: Adapter soft state
313 * fw_boot_context: Whether this function called during probe or after OCR
314 *
315 * This function is only for fusion controllers.
316 * Update host can queue, if firmware downgrade max supported firmware commands.
317 * Firmware upgrade case will be skiped because underlying firmware has
318 * more resource than exposed to the OS.
319 *
320 */
321 static void
322 megasas_fusion_update_can_queue(struct megasas_instance *instance, int fw_boot_context)
323 {
324 u16 cur_max_fw_cmds = 0;
325 u16 ldio_threshold = 0;
326
327 /* ventura FW does not fill outbound_scratch_pad_2 with queue depth */
328 if (instance->adapter_type < VENTURA_SERIES)
329 cur_max_fw_cmds =
330 megasas_readl(instance,
331 &instance->reg_set->outbound_scratch_pad_2) & 0x00FFFF;
332
333 if (dual_qdepth_disable || !cur_max_fw_cmds)
334 cur_max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF;
335 else
336 ldio_threshold =
337 (instance->instancet->read_fw_status_reg(instance) & 0x00FFFF) - MEGASAS_FUSION_IOCTL_CMDS;
338
339 dev_info(&instance->pdev->dev,
340 "Current firmware supports maximum commands: %d\t LDIO threshold: %d\n",
341 cur_max_fw_cmds, ldio_threshold);
342
343 if (fw_boot_context == OCR_CONTEXT) {
344 cur_max_fw_cmds = cur_max_fw_cmds - 1;
345 if (cur_max_fw_cmds < instance->max_fw_cmds) {
346 instance->cur_can_queue =
347 cur_max_fw_cmds - (MEGASAS_FUSION_INTERNAL_CMDS +
348 MEGASAS_FUSION_IOCTL_CMDS);
349 instance->host->can_queue = instance->cur_can_queue;
350 instance->ldio_threshold = ldio_threshold;
351 }
352 } else {
353 instance->max_fw_cmds = cur_max_fw_cmds;
354 instance->ldio_threshold = ldio_threshold;
355
356 if (reset_devices)
357 instance->max_fw_cmds = min(instance->max_fw_cmds,
358 (u16)MEGASAS_KDUMP_QUEUE_DEPTH);
359 /*
360 * Reduce the max supported cmds by 1. This is to ensure that the
361 * reply_q_sz (1 more than the max cmd that driver may send)
362 * does not exceed max cmds that the FW can support
363 */
364 instance->max_fw_cmds = instance->max_fw_cmds-1;
365 }
366 }
367 /**
368 * megasas_free_cmds_fusion - Free all the cmds in the free cmd pool
369 * @instance: Adapter soft state
370 */
371 void
372 megasas_free_cmds_fusion(struct megasas_instance *instance)
373 {
374 int i;
375 struct fusion_context *fusion = instance->ctrl_context;
376 struct megasas_cmd_fusion *cmd;
377
378 if (fusion->sense)
379 dma_pool_free(fusion->sense_dma_pool, fusion->sense,
380 fusion->sense_phys_addr);
381
382 /* SG */
383 if (fusion->cmd_list) {
384 for (i = 0; i < instance->max_mpt_cmds; i++) {
385 cmd = fusion->cmd_list[i];
386 if (cmd) {
387 if (cmd->sg_frame)
388 dma_pool_free(fusion->sg_dma_pool,
389 cmd->sg_frame,
390 cmd->sg_frame_phys_addr);
391 }
392 kfree(cmd);
393 }
394 kfree(fusion->cmd_list);
395 }
396
397 if (fusion->sg_dma_pool) {
398 dma_pool_destroy(fusion->sg_dma_pool);
399 fusion->sg_dma_pool = NULL;
400 }
401 if (fusion->sense_dma_pool) {
402 dma_pool_destroy(fusion->sense_dma_pool);
403 fusion->sense_dma_pool = NULL;
404 }
405
406
407 /* Reply Frame, Desc*/
408 if (instance->is_rdpq)
409 megasas_free_rdpq_fusion(instance);
410 else
411 megasas_free_reply_fusion(instance);
412
413 /* Request Frame, Desc*/
414 if (fusion->req_frames_desc)
415 dma_free_coherent(&instance->pdev->dev,
416 fusion->request_alloc_sz, fusion->req_frames_desc,
417 fusion->req_frames_desc_phys);
418 if (fusion->io_request_frames)
419 dma_pool_free(fusion->io_request_frames_pool,
420 fusion->io_request_frames,
421 fusion->io_request_frames_phys);
422 if (fusion->io_request_frames_pool) {
423 dma_pool_destroy(fusion->io_request_frames_pool);
424 fusion->io_request_frames_pool = NULL;
425 }
426 }
427
428 /**
429 * megasas_create_sg_sense_fusion - Creates DMA pool for cmd frames
430 * @instance: Adapter soft state
431 *
432 */
433 static int megasas_create_sg_sense_fusion(struct megasas_instance *instance)
434 {
435 int i;
436 u16 max_cmd;
437 struct fusion_context *fusion;
438 struct megasas_cmd_fusion *cmd;
439 int sense_sz;
440 u32 offset;
441
442 fusion = instance->ctrl_context;
443 max_cmd = instance->max_fw_cmds;
444 sense_sz = instance->max_mpt_cmds * SCSI_SENSE_BUFFERSIZE;
445
446 fusion->sg_dma_pool =
447 dma_pool_create("mr_sg", &instance->pdev->dev,
448 instance->max_chain_frame_sz,
449 MR_DEFAULT_NVME_PAGE_SIZE, 0);
450 /* SCSI_SENSE_BUFFERSIZE = 96 bytes */
451 fusion->sense_dma_pool =
452 dma_pool_create("mr_sense", &instance->pdev->dev,
453 sense_sz, 64, 0);
454
455 if (!fusion->sense_dma_pool || !fusion->sg_dma_pool) {
456 dev_err(&instance->pdev->dev,
457 "Failed from %s %d\n", __func__, __LINE__);
458 return -ENOMEM;
459 }
460
461 fusion->sense = dma_pool_alloc(fusion->sense_dma_pool,
462 GFP_KERNEL, &fusion->sense_phys_addr);
463 if (!fusion->sense) {
464 dev_err(&instance->pdev->dev,
465 "failed from %s %d\n", __func__, __LINE__);
466 return -ENOMEM;
467 }
468
469 /* sense buffer, request frame and reply desc pool requires to be in
470 * same 4 gb region. Below function will check this.
471 * In case of failure, new pci pool will be created with updated
472 * alignment.
473 * Older allocation and pool will be destroyed.
474 * Alignment will be used such a way that next allocation if success,
475 * will always meet same 4gb region requirement.
476 * Actual requirement is not alignment, but we need start and end of
477 * DMA address must have same upper 32 bit address.
478 */
479
480 if (!megasas_check_same_4gb_region(instance, fusion->sense_phys_addr,
481 sense_sz)) {
482 dma_pool_free(fusion->sense_dma_pool, fusion->sense,
483 fusion->sense_phys_addr);
484 fusion->sense = NULL;
485 dma_pool_destroy(fusion->sense_dma_pool);
486
487 fusion->sense_dma_pool =
488 dma_pool_create("mr_sense_align", &instance->pdev->dev,
489 sense_sz, roundup_pow_of_two(sense_sz),
490 0);
491 if (!fusion->sense_dma_pool) {
492 dev_err(&instance->pdev->dev,
493 "Failed from %s %d\n", __func__, __LINE__);
494 return -ENOMEM;
495 }
496 fusion->sense = dma_pool_alloc(fusion->sense_dma_pool,
497 GFP_KERNEL,
498 &fusion->sense_phys_addr);
499 if (!fusion->sense) {
500 dev_err(&instance->pdev->dev,
501 "failed from %s %d\n", __func__, __LINE__);
502 return -ENOMEM;
503 }
504 }
505
506 /*
507 * Allocate and attach a frame to each of the commands in cmd_list
508 */
509 for (i = 0; i < max_cmd; i++) {
510 cmd = fusion->cmd_list[i];
511 cmd->sg_frame = dma_pool_alloc(fusion->sg_dma_pool,
512 GFP_KERNEL, &cmd->sg_frame_phys_addr);
513
514 offset = SCSI_SENSE_BUFFERSIZE * i;
515 cmd->sense = (u8 *)fusion->sense + offset;
516 cmd->sense_phys_addr = fusion->sense_phys_addr + offset;
517
518 if (!cmd->sg_frame) {
519 dev_err(&instance->pdev->dev,
520 "Failed from %s %d\n", __func__, __LINE__);
521 return -ENOMEM;
522 }
523 }
524
525 /* create sense buffer for the raid 1/10 fp */
526 for (i = max_cmd; i < instance->max_mpt_cmds; i++) {
527 cmd = fusion->cmd_list[i];
528 offset = SCSI_SENSE_BUFFERSIZE * i;
529 cmd->sense = (u8 *)fusion->sense + offset;
530 cmd->sense_phys_addr = fusion->sense_phys_addr + offset;
531
532 }
533
534 return 0;
535 }
536
537 static int
538 megasas_alloc_cmdlist_fusion(struct megasas_instance *instance)
539 {
540 u32 max_mpt_cmd, i, j;
541 struct fusion_context *fusion;
542
543 fusion = instance->ctrl_context;
544
545 max_mpt_cmd = instance->max_mpt_cmds;
546
547 /*
548 * fusion->cmd_list is an array of struct megasas_cmd_fusion pointers.
549 * Allocate the dynamic array first and then allocate individual
550 * commands.
551 */
552 fusion->cmd_list =
553 kcalloc(max_mpt_cmd, sizeof(struct megasas_cmd_fusion *),
554 GFP_KERNEL);
555 if (!fusion->cmd_list) {
556 dev_err(&instance->pdev->dev,
557 "Failed from %s %d\n", __func__, __LINE__);
558 return -ENOMEM;
559 }
560
561 for (i = 0; i < max_mpt_cmd; i++) {
562 fusion->cmd_list[i] = kzalloc(sizeof(struct megasas_cmd_fusion),
563 GFP_KERNEL);
564 if (!fusion->cmd_list[i]) {
565 for (j = 0; j < i; j++)
566 kfree(fusion->cmd_list[j]);
567 kfree(fusion->cmd_list);
568 dev_err(&instance->pdev->dev,
569 "Failed from %s %d\n", __func__, __LINE__);
570 return -ENOMEM;
571 }
572 }
573
574 return 0;
575 }
576
577 static int
578 megasas_alloc_request_fusion(struct megasas_instance *instance)
579 {
580 struct fusion_context *fusion;
581
582 fusion = instance->ctrl_context;
583
584 retry_alloc:
585 fusion->io_request_frames_pool =
586 dma_pool_create("mr_ioreq", &instance->pdev->dev,
587 fusion->io_frames_alloc_sz, 16, 0);
588
589 if (!fusion->io_request_frames_pool) {
590 dev_err(&instance->pdev->dev,
591 "Failed from %s %d\n", __func__, __LINE__);
592 return -ENOMEM;
593 }
594
595 fusion->io_request_frames =
596 dma_pool_alloc(fusion->io_request_frames_pool,
597 GFP_KERNEL, &fusion->io_request_frames_phys);
598 if (!fusion->io_request_frames) {
599 if (instance->max_fw_cmds >= (MEGASAS_REDUCE_QD_COUNT * 2)) {
600 instance->max_fw_cmds -= MEGASAS_REDUCE_QD_COUNT;
601 dma_pool_destroy(fusion->io_request_frames_pool);
602 megasas_configure_queue_sizes(instance);
603 goto retry_alloc;
604 } else {
605 dev_err(&instance->pdev->dev,
606 "Failed from %s %d\n", __func__, __LINE__);
607 return -ENOMEM;
608 }
609 }
610
611 if (!megasas_check_same_4gb_region(instance,
612 fusion->io_request_frames_phys,
613 fusion->io_frames_alloc_sz)) {
614 dma_pool_free(fusion->io_request_frames_pool,
615 fusion->io_request_frames,
616 fusion->io_request_frames_phys);
617 fusion->io_request_frames = NULL;
618 dma_pool_destroy(fusion->io_request_frames_pool);
619
620 fusion->io_request_frames_pool =
621 dma_pool_create("mr_ioreq_align",
622 &instance->pdev->dev,
623 fusion->io_frames_alloc_sz,
624 roundup_pow_of_two(fusion->io_frames_alloc_sz),
625 0);
626
627 if (!fusion->io_request_frames_pool) {
628 dev_err(&instance->pdev->dev,
629 "Failed from %s %d\n", __func__, __LINE__);
630 return -ENOMEM;
631 }
632
633 fusion->io_request_frames =
634 dma_pool_alloc(fusion->io_request_frames_pool,
635 GFP_KERNEL,
636 &fusion->io_request_frames_phys);
637
638 if (!fusion->io_request_frames) {
639 dev_err(&instance->pdev->dev,
640 "Failed from %s %d\n", __func__, __LINE__);
641 return -ENOMEM;
642 }
643 }
644
645 fusion->req_frames_desc =
646 dma_alloc_coherent(&instance->pdev->dev,
647 fusion->request_alloc_sz,
648 &fusion->req_frames_desc_phys, GFP_KERNEL);
649 if (!fusion->req_frames_desc) {
650 dev_err(&instance->pdev->dev,
651 "Failed from %s %d\n", __func__, __LINE__);
652 return -ENOMEM;
653 }
654
655 return 0;
656 }
657
658 static int
659 megasas_alloc_reply_fusion(struct megasas_instance *instance)
660 {
661 int i, count;
662 struct fusion_context *fusion;
663 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
664 fusion = instance->ctrl_context;
665
666 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
667 fusion->reply_frames_desc_pool =
668 dma_pool_create("mr_reply", &instance->pdev->dev,
669 fusion->reply_alloc_sz * count, 16, 0);
670
671 if (!fusion->reply_frames_desc_pool) {
672 dev_err(&instance->pdev->dev,
673 "Failed from %s %d\n", __func__, __LINE__);
674 return -ENOMEM;
675 }
676
677 fusion->reply_frames_desc[0] =
678 dma_pool_alloc(fusion->reply_frames_desc_pool,
679 GFP_KERNEL, &fusion->reply_frames_desc_phys[0]);
680 if (!fusion->reply_frames_desc[0]) {
681 dev_err(&instance->pdev->dev,
682 "Failed from %s %d\n", __func__, __LINE__);
683 return -ENOMEM;
684 }
685
686 if (!megasas_check_same_4gb_region(instance,
687 fusion->reply_frames_desc_phys[0],
688 (fusion->reply_alloc_sz * count))) {
689 dma_pool_free(fusion->reply_frames_desc_pool,
690 fusion->reply_frames_desc[0],
691 fusion->reply_frames_desc_phys[0]);
692 fusion->reply_frames_desc[0] = NULL;
693 dma_pool_destroy(fusion->reply_frames_desc_pool);
694
695 fusion->reply_frames_desc_pool =
696 dma_pool_create("mr_reply_align",
697 &instance->pdev->dev,
698 fusion->reply_alloc_sz * count,
699 roundup_pow_of_two(fusion->reply_alloc_sz * count),
700 0);
701
702 if (!fusion->reply_frames_desc_pool) {
703 dev_err(&instance->pdev->dev,
704 "Failed from %s %d\n", __func__, __LINE__);
705 return -ENOMEM;
706 }
707
708 fusion->reply_frames_desc[0] =
709 dma_pool_alloc(fusion->reply_frames_desc_pool,
710 GFP_KERNEL,
711 &fusion->reply_frames_desc_phys[0]);
712
713 if (!fusion->reply_frames_desc[0]) {
714 dev_err(&instance->pdev->dev,
715 "Failed from %s %d\n", __func__, __LINE__);
716 return -ENOMEM;
717 }
718 }
719
720 reply_desc = fusion->reply_frames_desc[0];
721 for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++)
722 reply_desc->Words = cpu_to_le64(ULLONG_MAX);
723
724 /* This is not a rdpq mode, but driver still populate
725 * reply_frame_desc array to use same msix index in ISR path.
726 */
727 for (i = 0; i < (count - 1); i++)
728 fusion->reply_frames_desc[i + 1] =
729 fusion->reply_frames_desc[i] +
730 (fusion->reply_alloc_sz)/sizeof(union MPI2_REPLY_DESCRIPTORS_UNION);
731
732 return 0;
733 }
734
735 static int
736 megasas_alloc_rdpq_fusion(struct megasas_instance *instance)
737 {
738 int i, j, k, msix_count;
739 struct fusion_context *fusion;
740 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
741 union MPI2_REPLY_DESCRIPTORS_UNION *rdpq_chunk_virt[RDPQ_MAX_CHUNK_COUNT];
742 dma_addr_t rdpq_chunk_phys[RDPQ_MAX_CHUNK_COUNT];
743 u8 dma_alloc_count, abs_index;
744 u32 chunk_size, array_size, offset;
745
746 fusion = instance->ctrl_context;
747 chunk_size = fusion->reply_alloc_sz * RDPQ_MAX_INDEX_IN_ONE_CHUNK;
748 array_size = sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) *
749 MAX_MSIX_QUEUES_FUSION;
750
751 fusion->rdpq_virt = dma_alloc_coherent(&instance->pdev->dev,
752 array_size, &fusion->rdpq_phys,
753 GFP_KERNEL);
754 if (!fusion->rdpq_virt) {
755 dev_err(&instance->pdev->dev,
756 "Failed from %s %d\n", __func__, __LINE__);
757 return -ENOMEM;
758 }
759
760 msix_count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
761
762 fusion->reply_frames_desc_pool = dma_pool_create("mr_rdpq",
763 &instance->pdev->dev,
764 chunk_size, 16, 0);
765 fusion->reply_frames_desc_pool_align =
766 dma_pool_create("mr_rdpq_align",
767 &instance->pdev->dev,
768 chunk_size,
769 roundup_pow_of_two(chunk_size),
770 0);
771
772 if (!fusion->reply_frames_desc_pool ||
773 !fusion->reply_frames_desc_pool_align) {
774 dev_err(&instance->pdev->dev,
775 "Failed from %s %d\n", __func__, __LINE__);
776 return -ENOMEM;
777 }
778
779 /*
780 * For INVADER_SERIES each set of 8 reply queues(0-7, 8-15, ..) and
781 * VENTURA_SERIES each set of 16 reply queues(0-15, 16-31, ..) should be
782 * within 4GB boundary and also reply queues in a set must have same
783 * upper 32-bits in their memory address. so here driver is allocating the
784 * DMA'able memory for reply queues according. Driver uses limitation of
785 * VENTURA_SERIES to manage INVADER_SERIES as well.
786 */
787 dma_alloc_count = DIV_ROUND_UP(msix_count, RDPQ_MAX_INDEX_IN_ONE_CHUNK);
788
789 for (i = 0; i < dma_alloc_count; i++) {
790 rdpq_chunk_virt[i] =
791 dma_pool_alloc(fusion->reply_frames_desc_pool,
792 GFP_KERNEL, &rdpq_chunk_phys[i]);
793 if (!rdpq_chunk_virt[i]) {
794 dev_err(&instance->pdev->dev,
795 "Failed from %s %d\n", __func__, __LINE__);
796 return -ENOMEM;
797 }
798 /* reply desc pool requires to be in same 4 gb region.
799 * Below function will check this.
800 * In case of failure, new pci pool will be created with updated
801 * alignment.
802 * For RDPQ buffers, driver always allocate two separate pci pool.
803 * Alignment will be used such a way that next allocation if
804 * success, will always meet same 4gb region requirement.
805 * rdpq_tracker keep track of each buffer's physical,
806 * virtual address and pci pool descriptor. It will help driver
807 * while freeing the resources.
808 *
809 */
810 if (!megasas_check_same_4gb_region(instance, rdpq_chunk_phys[i],
811 chunk_size)) {
812 dma_pool_free(fusion->reply_frames_desc_pool,
813 rdpq_chunk_virt[i],
814 rdpq_chunk_phys[i]);
815
816 rdpq_chunk_virt[i] =
817 dma_pool_alloc(fusion->reply_frames_desc_pool_align,
818 GFP_KERNEL, &rdpq_chunk_phys[i]);
819 if (!rdpq_chunk_virt[i]) {
820 dev_err(&instance->pdev->dev,
821 "Failed from %s %d\n",
822 __func__, __LINE__);
823 return -ENOMEM;
824 }
825 fusion->rdpq_tracker[i].dma_pool_ptr =
826 fusion->reply_frames_desc_pool_align;
827 } else {
828 fusion->rdpq_tracker[i].dma_pool_ptr =
829 fusion->reply_frames_desc_pool;
830 }
831
832 fusion->rdpq_tracker[i].pool_entry_phys = rdpq_chunk_phys[i];
833 fusion->rdpq_tracker[i].pool_entry_virt = rdpq_chunk_virt[i];
834 }
835
836 for (k = 0; k < dma_alloc_count; k++) {
837 for (i = 0; i < RDPQ_MAX_INDEX_IN_ONE_CHUNK; i++) {
838 abs_index = (k * RDPQ_MAX_INDEX_IN_ONE_CHUNK) + i;
839
840 if (abs_index == msix_count)
841 break;
842 offset = fusion->reply_alloc_sz * i;
843 fusion->rdpq_virt[abs_index].RDPQBaseAddress =
844 cpu_to_le64(rdpq_chunk_phys[k] + offset);
845 fusion->reply_frames_desc_phys[abs_index] =
846 rdpq_chunk_phys[k] + offset;
847 fusion->reply_frames_desc[abs_index] =
848 (union MPI2_REPLY_DESCRIPTORS_UNION *)((u8 *)rdpq_chunk_virt[k] + offset);
849
850 reply_desc = fusion->reply_frames_desc[abs_index];
851 for (j = 0; j < fusion->reply_q_depth; j++, reply_desc++)
852 reply_desc->Words = ULLONG_MAX;
853 }
854 }
855
856 return 0;
857 }
858
859 static void
860 megasas_free_rdpq_fusion(struct megasas_instance *instance) {
861
862 int i;
863 struct fusion_context *fusion;
864
865 fusion = instance->ctrl_context;
866
867 for (i = 0; i < RDPQ_MAX_CHUNK_COUNT; i++) {
868 if (fusion->rdpq_tracker[i].pool_entry_virt)
869 dma_pool_free(fusion->rdpq_tracker[i].dma_pool_ptr,
870 fusion->rdpq_tracker[i].pool_entry_virt,
871 fusion->rdpq_tracker[i].pool_entry_phys);
872
873 }
874
875 dma_pool_destroy(fusion->reply_frames_desc_pool);
876 dma_pool_destroy(fusion->reply_frames_desc_pool_align);
877
878 if (fusion->rdpq_virt)
879 dma_free_coherent(&instance->pdev->dev,
880 sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * MAX_MSIX_QUEUES_FUSION,
881 fusion->rdpq_virt, fusion->rdpq_phys);
882 }
883
884 static void
885 megasas_free_reply_fusion(struct megasas_instance *instance) {
886
887 struct fusion_context *fusion;
888
889 fusion = instance->ctrl_context;
890
891 if (fusion->reply_frames_desc[0])
892 dma_pool_free(fusion->reply_frames_desc_pool,
893 fusion->reply_frames_desc[0],
894 fusion->reply_frames_desc_phys[0]);
895
896 dma_pool_destroy(fusion->reply_frames_desc_pool);
897
898 }
899
900
901 /**
902 * megasas_alloc_cmds_fusion - Allocates the command packets
903 * @instance: Adapter soft state
904 *
905 *
906 * Each frame has a 32-bit field called context. This context is used to get
907 * back the megasas_cmd_fusion from the frame when a frame gets completed
908 * In this driver, the 32 bit values are the indices into an array cmd_list.
909 * This array is used only to look up the megasas_cmd_fusion given the context.
910 * The free commands themselves are maintained in a linked list called cmd_pool.
911 *
912 * cmds are formed in the io_request and sg_frame members of the
913 * megasas_cmd_fusion. The context field is used to get a request descriptor
914 * and is used as SMID of the cmd.
915 * SMID value range is from 1 to max_fw_cmds.
916 */
917 static int
918 megasas_alloc_cmds_fusion(struct megasas_instance *instance)
919 {
920 int i;
921 struct fusion_context *fusion;
922 struct megasas_cmd_fusion *cmd;
923 u32 offset;
924 dma_addr_t io_req_base_phys;
925 u8 *io_req_base;
926
927
928 fusion = instance->ctrl_context;
929
930 if (megasas_alloc_request_fusion(instance))
931 goto fail_exit;
932
933 if (instance->is_rdpq) {
934 if (megasas_alloc_rdpq_fusion(instance))
935 goto fail_exit;
936 } else
937 if (megasas_alloc_reply_fusion(instance))
938 goto fail_exit;
939
940 if (megasas_alloc_cmdlist_fusion(instance))
941 goto fail_exit;
942
943 dev_info(&instance->pdev->dev, "Configured max firmware commands: %d\n",
944 instance->max_fw_cmds);
945
946 /* The first 256 bytes (SMID 0) is not used. Don't add to the cmd list */
947 io_req_base = fusion->io_request_frames + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
948 io_req_base_phys = fusion->io_request_frames_phys + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
949
950 /*
951 * Add all the commands to command pool (fusion->cmd_pool)
952 */
953
954 /* SMID 0 is reserved. Set SMID/index from 1 */
955 for (i = 0; i < instance->max_mpt_cmds; i++) {
956 cmd = fusion->cmd_list[i];
957 offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i;
958 memset(cmd, 0, sizeof(struct megasas_cmd_fusion));
959 cmd->index = i + 1;
960 cmd->scmd = NULL;
961 cmd->sync_cmd_idx =
962 (i >= instance->max_scsi_cmds && i < instance->max_fw_cmds) ?
963 (i - instance->max_scsi_cmds) :
964 (u32)ULONG_MAX; /* Set to Invalid */
965 cmd->instance = instance;
966 cmd->io_request =
967 (struct MPI2_RAID_SCSI_IO_REQUEST *)
968 (io_req_base + offset);
969 memset(cmd->io_request, 0,
970 sizeof(struct MPI2_RAID_SCSI_IO_REQUEST));
971 cmd->io_request_phys_addr = io_req_base_phys + offset;
972 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
973 }
974
975 if (megasas_create_sg_sense_fusion(instance))
976 goto fail_exit;
977
978 return 0;
979
980 fail_exit:
981 megasas_free_cmds_fusion(instance);
982 return -ENOMEM;
983 }
984
985 /**
986 * wait_and_poll - Issues a polling command
987 * @instance: Adapter soft state
988 * @cmd: Command packet to be issued
989 *
990 * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
991 */
992 int
993 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
994 int seconds)
995 {
996 int i;
997 struct megasas_header *frame_hdr = &cmd->frame->hdr;
998 u32 status_reg;
999
1000 u32 msecs = seconds * 1000;
1001
1002 /*
1003 * Wait for cmd_status to change
1004 */
1005 for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) {
1006 rmb();
1007 msleep(20);
1008 if (!(i % 5000)) {
1009 status_reg = instance->instancet->read_fw_status_reg(instance)
1010 & MFI_STATE_MASK;
1011 if (status_reg == MFI_STATE_FAULT)
1012 break;
1013 }
1014 }
1015
1016 if (frame_hdr->cmd_status == MFI_STAT_INVALID_STATUS)
1017 return DCMD_TIMEOUT;
1018 else if (frame_hdr->cmd_status == MFI_STAT_OK)
1019 return DCMD_SUCCESS;
1020 else
1021 return DCMD_FAILED;
1022 }
1023
1024 /**
1025 * megasas_ioc_init_fusion - Initializes the FW
1026 * @instance: Adapter soft state
1027 *
1028 * Issues the IOC Init cmd
1029 */
1030 int
1031 megasas_ioc_init_fusion(struct megasas_instance *instance)
1032 {
1033 struct megasas_init_frame *init_frame;
1034 struct MPI2_IOC_INIT_REQUEST *IOCInitMessage = NULL;
1035 dma_addr_t ioc_init_handle;
1036 struct megasas_cmd *cmd;
1037 u8 ret, cur_rdpq_mode;
1038 struct fusion_context *fusion;
1039 union MEGASAS_REQUEST_DESCRIPTOR_UNION req_desc;
1040 int i;
1041 struct megasas_header *frame_hdr;
1042 const char *sys_info;
1043 MFI_CAPABILITIES *drv_ops;
1044 u32 scratch_pad_1;
1045 ktime_t time;
1046 bool cur_fw_64bit_dma_capable;
1047 bool cur_intr_coalescing;
1048
1049 fusion = instance->ctrl_context;
1050
1051 ioc_init_handle = fusion->ioc_init_request_phys;
1052 IOCInitMessage = fusion->ioc_init_request;
1053
1054 cmd = fusion->ioc_init_cmd;
1055
1056 scratch_pad_1 = megasas_readl
1057 (instance, &instance->reg_set->outbound_scratch_pad_1);
1058
1059 cur_rdpq_mode = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ? 1 : 0;
1060
1061 if (instance->adapter_type == INVADER_SERIES) {
1062 cur_fw_64bit_dma_capable =
1063 (scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET) ? true : false;
1064
1065 if (instance->consistent_mask_64bit && !cur_fw_64bit_dma_capable) {
1066 dev_err(&instance->pdev->dev, "Driver was operating on 64bit "
1067 "DMA mask, but upcoming FW does not support 64bit DMA mask\n");
1068 megaraid_sas_kill_hba(instance);
1069 ret = 1;
1070 goto fail_fw_init;
1071 }
1072 }
1073
1074 if (instance->is_rdpq && !cur_rdpq_mode) {
1075 dev_err(&instance->pdev->dev, "Firmware downgrade *NOT SUPPORTED*"
1076 " from RDPQ mode to non RDPQ mode\n");
1077 ret = 1;
1078 goto fail_fw_init;
1079 }
1080
1081 cur_intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ?
1082 true : false;
1083
1084 if ((instance->low_latency_index_start ==
1085 MR_HIGH_IOPS_QUEUE_COUNT) && cur_intr_coalescing)
1086 instance->perf_mode = MR_BALANCED_PERF_MODE;
1087
1088 dev_info(&instance->pdev->dev, "Performance mode :%s\n",
1089 MEGASAS_PERF_MODE_2STR(instance->perf_mode));
1090
1091 instance->fw_sync_cache_support = (scratch_pad_1 &
1092 MR_CAN_HANDLE_SYNC_CACHE_OFFSET) ? 1 : 0;
1093 dev_info(&instance->pdev->dev, "FW supports sync cache\t: %s\n",
1094 instance->fw_sync_cache_support ? "Yes" : "No");
1095
1096 memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST));
1097
1098 IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT;
1099 IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER;
1100 IOCInitMessage->MsgVersion = cpu_to_le16(MPI2_VERSION);
1101 IOCInitMessage->HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION);
1102 IOCInitMessage->SystemRequestFrameSize = cpu_to_le16(MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4);
1103
1104 IOCInitMessage->ReplyDescriptorPostQueueDepth = cpu_to_le16(fusion->reply_q_depth);
1105 IOCInitMessage->ReplyDescriptorPostQueueAddress = instance->is_rdpq ?
1106 cpu_to_le64(fusion->rdpq_phys) :
1107 cpu_to_le64(fusion->reply_frames_desc_phys[0]);
1108 IOCInitMessage->MsgFlags = instance->is_rdpq ?
1109 MPI2_IOCINIT_MSGFLAG_RDPQ_ARRAY_MODE : 0;
1110 IOCInitMessage->SystemRequestFrameBaseAddress = cpu_to_le64(fusion->io_request_frames_phys);
1111 IOCInitMessage->SenseBufferAddressHigh = cpu_to_le32(upper_32_bits(fusion->sense_phys_addr));
1112 IOCInitMessage->HostMSIxVectors = instance->msix_vectors;
1113 IOCInitMessage->HostPageSize = MR_DEFAULT_NVME_PAGE_SHIFT;
1114
1115 time = ktime_get_real();
1116 /* Convert to milliseconds as per FW requirement */
1117 IOCInitMessage->TimeStamp = cpu_to_le64(ktime_to_ms(time));
1118
1119 init_frame = (struct megasas_init_frame *)cmd->frame;
1120 memset(init_frame, 0, IOC_INIT_FRAME_SIZE);
1121
1122 frame_hdr = &cmd->frame->hdr;
1123 frame_hdr->cmd_status = 0xFF;
1124 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
1125
1126 init_frame->cmd = MFI_CMD_INIT;
1127 init_frame->cmd_status = 0xFF;
1128
1129 drv_ops = (MFI_CAPABILITIES *) &(init_frame->driver_operations);
1130
1131 /* driver support Extended MSIX */
1132 if (instance->adapter_type >= INVADER_SERIES)
1133 drv_ops->mfi_capabilities.support_additional_msix = 1;
1134 /* driver supports HA / Remote LUN over Fast Path interface */
1135 drv_ops->mfi_capabilities.support_fp_remote_lun = 1;
1136
1137 drv_ops->mfi_capabilities.support_max_255lds = 1;
1138 drv_ops->mfi_capabilities.support_ndrive_r1_lb = 1;
1139 drv_ops->mfi_capabilities.security_protocol_cmds_fw = 1;
1140
1141 if (instance->max_chain_frame_sz > MEGASAS_CHAIN_FRAME_SZ_MIN)
1142 drv_ops->mfi_capabilities.support_ext_io_size = 1;
1143
1144 drv_ops->mfi_capabilities.support_fp_rlbypass = 1;
1145 if (!dual_qdepth_disable)
1146 drv_ops->mfi_capabilities.support_ext_queue_depth = 1;
1147
1148 drv_ops->mfi_capabilities.support_qd_throttling = 1;
1149 drv_ops->mfi_capabilities.support_pd_map_target_id = 1;
1150 drv_ops->mfi_capabilities.support_nvme_passthru = 1;
1151 drv_ops->mfi_capabilities.support_fw_exposed_dev_list = 1;
1152
1153 if (instance->consistent_mask_64bit)
1154 drv_ops->mfi_capabilities.support_64bit_mode = 1;
1155
1156 /* Convert capability to LE32 */
1157 cpu_to_le32s((u32 *)&init_frame->driver_operations.mfi_capabilities);
1158
1159 sys_info = dmi_get_system_info(DMI_PRODUCT_UUID);
1160 if (instance->system_info_buf && sys_info) {
1161 memcpy(instance->system_info_buf->systemId, sys_info,
1162 strlen(sys_info) > 64 ? 64 : strlen(sys_info));
1163 instance->system_info_buf->systemIdLength =
1164 strlen(sys_info) > 64 ? 64 : strlen(sys_info);
1165 init_frame->system_info_lo = cpu_to_le32(lower_32_bits(instance->system_info_h));
1166 init_frame->system_info_hi = cpu_to_le32(upper_32_bits(instance->system_info_h));
1167 }
1168
1169 init_frame->queue_info_new_phys_addr_hi =
1170 cpu_to_le32(upper_32_bits(ioc_init_handle));
1171 init_frame->queue_info_new_phys_addr_lo =
1172 cpu_to_le32(lower_32_bits(ioc_init_handle));
1173 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct MPI2_IOC_INIT_REQUEST));
1174
1175 /*
1176 * Each bit in replyqueue_mask represents one group of MSI-x vectors
1177 * (each group has 8 vectors)
1178 */
1179 switch (instance->perf_mode) {
1180 case MR_BALANCED_PERF_MODE:
1181 init_frame->replyqueue_mask =
1182 cpu_to_le16(~(~0 << instance->low_latency_index_start/8));
1183 break;
1184 case MR_IOPS_PERF_MODE:
1185 init_frame->replyqueue_mask =
1186 cpu_to_le16(~(~0 << instance->msix_vectors/8));
1187 break;
1188 }
1189
1190
1191 req_desc.u.low = cpu_to_le32(lower_32_bits(cmd->frame_phys_addr));
1192 req_desc.u.high = cpu_to_le32(upper_32_bits(cmd->frame_phys_addr));
1193 req_desc.MFAIo.RequestFlags =
1194 (MEGASAS_REQ_DESCRIPT_FLAGS_MFA <<
1195 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1196
1197 /*
1198 * disable the intr before firing the init frame
1199 */
1200 instance->instancet->disable_intr(instance);
1201
1202 for (i = 0; i < (10 * 1000); i += 20) {
1203 if (megasas_readl(instance, &instance->reg_set->doorbell) & 1)
1204 msleep(20);
1205 else
1206 break;
1207 }
1208
1209 /* For AERO also, IOC_INIT requires 64 bit descriptor write */
1210 megasas_write_64bit_req_desc(instance, &req_desc);
1211
1212 wait_and_poll(instance, cmd, MFI_IO_TIMEOUT_SECS);
1213
1214 frame_hdr = &cmd->frame->hdr;
1215 if (frame_hdr->cmd_status != 0) {
1216 ret = 1;
1217 goto fail_fw_init;
1218 }
1219
1220 if (instance->adapter_type >= AERO_SERIES) {
1221 scratch_pad_1 = megasas_readl
1222 (instance, &instance->reg_set->outbound_scratch_pad_1);
1223
1224 instance->atomic_desc_support =
1225 (scratch_pad_1 & MR_ATOMIC_DESCRIPTOR_SUPPORT_OFFSET) ? 1 : 0;
1226
1227 dev_info(&instance->pdev->dev, "FW supports atomic descriptor\t: %s\n",
1228 instance->atomic_desc_support ? "Yes" : "No");
1229 }
1230
1231 return 0;
1232
1233 fail_fw_init:
1234 dev_err(&instance->pdev->dev,
1235 "Init cmd return status FAILED for SCSI host %d\n",
1236 instance->host->host_no);
1237
1238 return ret;
1239 }
1240
1241 /**
1242 * megasas_sync_pd_seq_num - JBOD SEQ MAP
1243 * @instance: Adapter soft state
1244 * @pend: set to 1, if it is pended jbod map.
1245 *
1246 * Issue Jbod map to the firmware. If it is pended command,
1247 * issue command and return. If it is first instance of jbod map
1248 * issue and receive command.
1249 */
1250 int
1251 megasas_sync_pd_seq_num(struct megasas_instance *instance, bool pend) {
1252 int ret = 0;
1253 size_t pd_seq_map_sz;
1254 struct megasas_cmd *cmd;
1255 struct megasas_dcmd_frame *dcmd;
1256 struct fusion_context *fusion = instance->ctrl_context;
1257 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1258 dma_addr_t pd_seq_h;
1259
1260 pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id & 1)];
1261 pd_seq_h = fusion->pd_seq_phys[(instance->pd_seq_map_id & 1)];
1262 pd_seq_map_sz = struct_size(pd_sync, seq, MAX_PHYSICAL_DEVICES - 1);
1263
1264 cmd = megasas_get_cmd(instance);
1265 if (!cmd) {
1266 dev_err(&instance->pdev->dev,
1267 "Could not get mfi cmd. Fail from %s %d\n",
1268 __func__, __LINE__);
1269 return -ENOMEM;
1270 }
1271
1272 dcmd = &cmd->frame->dcmd;
1273
1274 memset(pd_sync, 0, pd_seq_map_sz);
1275 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1276
1277 if (pend) {
1278 dcmd->mbox.b[0] = MEGASAS_DCMD_MBOX_PEND_FLAG;
1279 dcmd->flags = MFI_FRAME_DIR_WRITE;
1280 instance->jbod_seq_cmd = cmd;
1281 } else {
1282 dcmd->flags = MFI_FRAME_DIR_READ;
1283 }
1284
1285 dcmd->cmd = MFI_CMD_DCMD;
1286 dcmd->cmd_status = 0xFF;
1287 dcmd->sge_count = 1;
1288 dcmd->timeout = 0;
1289 dcmd->pad_0 = 0;
1290 dcmd->data_xfer_len = cpu_to_le32(pd_seq_map_sz);
1291 dcmd->opcode = cpu_to_le32(MR_DCMD_SYSTEM_PD_MAP_GET_INFO);
1292
1293 megasas_set_dma_settings(instance, dcmd, pd_seq_h, pd_seq_map_sz);
1294
1295 if (pend) {
1296 instance->instancet->issue_dcmd(instance, cmd);
1297 return 0;
1298 }
1299
1300 /* Below code is only for non pended DCMD */
1301 if (!instance->mask_interrupts)
1302 ret = megasas_issue_blocked_cmd(instance, cmd,
1303 MFI_IO_TIMEOUT_SECS);
1304 else
1305 ret = megasas_issue_polled(instance, cmd);
1306
1307 if (le32_to_cpu(pd_sync->count) > MAX_PHYSICAL_DEVICES) {
1308 dev_warn(&instance->pdev->dev,
1309 "driver supports max %d JBOD, but FW reports %d\n",
1310 MAX_PHYSICAL_DEVICES, le32_to_cpu(pd_sync->count));
1311 ret = -EINVAL;
1312 }
1313
1314 if (ret == DCMD_TIMEOUT)
1315 megaraid_sas_kill_hba(instance);
1316
1317 if (ret == DCMD_SUCCESS)
1318 instance->pd_seq_map_id++;
1319
1320 megasas_return_cmd(instance, cmd);
1321 return ret;
1322 }
1323
1324 /*
1325 * megasas_get_ld_map_info - Returns FW's ld_map structure
1326 * @instance: Adapter soft state
1327 * @pend: Pend the command or not
1328 * Issues an internal command (DCMD) to get the FW's controller PD
1329 * list structure. This information is mainly used to find out SYSTEM
1330 * supported by the FW.
1331 * dcmd.mbox value setting for MR_DCMD_LD_MAP_GET_INFO
1332 * dcmd.mbox.b[0] - number of LDs being sync'd
1333 * dcmd.mbox.b[1] - 0 - complete command immediately.
1334 * - 1 - pend till config change
1335 * dcmd.mbox.b[2] - 0 - supports max 64 lds and uses legacy MR_FW_RAID_MAP
1336 * - 1 - supports max MAX_LOGICAL_DRIVES_EXT lds and
1337 * uses extended struct MR_FW_RAID_MAP_EXT
1338 */
1339 static int
1340 megasas_get_ld_map_info(struct megasas_instance *instance)
1341 {
1342 int ret = 0;
1343 struct megasas_cmd *cmd;
1344 struct megasas_dcmd_frame *dcmd;
1345 void *ci;
1346 dma_addr_t ci_h = 0;
1347 u32 size_map_info;
1348 struct fusion_context *fusion;
1349
1350 cmd = megasas_get_cmd(instance);
1351
1352 if (!cmd) {
1353 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for map info\n");
1354 return -ENOMEM;
1355 }
1356
1357 fusion = instance->ctrl_context;
1358
1359 if (!fusion) {
1360 megasas_return_cmd(instance, cmd);
1361 return -ENXIO;
1362 }
1363
1364 dcmd = &cmd->frame->dcmd;
1365
1366 size_map_info = fusion->current_map_sz;
1367
1368 ci = (void *) fusion->ld_map[(instance->map_id & 1)];
1369 ci_h = fusion->ld_map_phys[(instance->map_id & 1)];
1370
1371 if (!ci) {
1372 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ld_map_info\n");
1373 megasas_return_cmd(instance, cmd);
1374 return -ENOMEM;
1375 }
1376
1377 memset(ci, 0, fusion->max_map_sz);
1378 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1379 dcmd->cmd = MFI_CMD_DCMD;
1380 dcmd->cmd_status = 0xFF;
1381 dcmd->sge_count = 1;
1382 dcmd->flags = MFI_FRAME_DIR_READ;
1383 dcmd->timeout = 0;
1384 dcmd->pad_0 = 0;
1385 dcmd->data_xfer_len = cpu_to_le32(size_map_info);
1386 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
1387
1388 megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info);
1389
1390 if (!instance->mask_interrupts)
1391 ret = megasas_issue_blocked_cmd(instance, cmd,
1392 MFI_IO_TIMEOUT_SECS);
1393 else
1394 ret = megasas_issue_polled(instance, cmd);
1395
1396 if (ret == DCMD_TIMEOUT)
1397 megaraid_sas_kill_hba(instance);
1398
1399 megasas_return_cmd(instance, cmd);
1400
1401 return ret;
1402 }
1403
1404 u8
1405 megasas_get_map_info(struct megasas_instance *instance)
1406 {
1407 struct fusion_context *fusion = instance->ctrl_context;
1408
1409 fusion->fast_path_io = 0;
1410 if (!megasas_get_ld_map_info(instance)) {
1411 if (MR_ValidateMapInfo(instance, instance->map_id)) {
1412 fusion->fast_path_io = 1;
1413 return 0;
1414 }
1415 }
1416 return 1;
1417 }
1418
1419 /*
1420 * megasas_sync_map_info - Returns FW's ld_map structure
1421 * @instance: Adapter soft state
1422 *
1423 * Issues an internal command (DCMD) to get the FW's controller PD
1424 * list structure. This information is mainly used to find out SYSTEM
1425 * supported by the FW.
1426 */
1427 int
1428 megasas_sync_map_info(struct megasas_instance *instance)
1429 {
1430 int i;
1431 struct megasas_cmd *cmd;
1432 struct megasas_dcmd_frame *dcmd;
1433 u16 num_lds;
1434 struct fusion_context *fusion;
1435 struct MR_LD_TARGET_SYNC *ci = NULL;
1436 struct MR_DRV_RAID_MAP_ALL *map;
1437 struct MR_LD_RAID *raid;
1438 struct MR_LD_TARGET_SYNC *ld_sync;
1439 dma_addr_t ci_h = 0;
1440 u32 size_map_info;
1441
1442 cmd = megasas_get_cmd(instance);
1443
1444 if (!cmd) {
1445 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for sync info\n");
1446 return -ENOMEM;
1447 }
1448
1449 fusion = instance->ctrl_context;
1450
1451 if (!fusion) {
1452 megasas_return_cmd(instance, cmd);
1453 return 1;
1454 }
1455
1456 map = fusion->ld_drv_map[instance->map_id & 1];
1457
1458 num_lds = le16_to_cpu(map->raidMap.ldCount);
1459
1460 dcmd = &cmd->frame->dcmd;
1461
1462 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1463
1464 ci = (struct MR_LD_TARGET_SYNC *)
1465 fusion->ld_map[(instance->map_id - 1) & 1];
1466 memset(ci, 0, fusion->max_map_sz);
1467
1468 ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1];
1469
1470 ld_sync = (struct MR_LD_TARGET_SYNC *)ci;
1471
1472 for (i = 0; i < num_lds; i++, ld_sync++) {
1473 raid = MR_LdRaidGet(i, map);
1474 ld_sync->targetId = MR_GetLDTgtId(i, map);
1475 ld_sync->seqNum = raid->seqNum;
1476 }
1477
1478 size_map_info = fusion->current_map_sz;
1479
1480 dcmd->cmd = MFI_CMD_DCMD;
1481 dcmd->cmd_status = 0xFF;
1482 dcmd->sge_count = 1;
1483 dcmd->flags = MFI_FRAME_DIR_WRITE;
1484 dcmd->timeout = 0;
1485 dcmd->pad_0 = 0;
1486 dcmd->data_xfer_len = cpu_to_le32(size_map_info);
1487 dcmd->mbox.b[0] = num_lds;
1488 dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG;
1489 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
1490
1491 megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info);
1492
1493 instance->map_update_cmd = cmd;
1494
1495 instance->instancet->issue_dcmd(instance, cmd);
1496
1497 return 0;
1498 }
1499
1500 /*
1501 * meagasas_display_intel_branding - Display branding string
1502 * @instance: per adapter object
1503 *
1504 * Return nothing.
1505 */
1506 static void
1507 megasas_display_intel_branding(struct megasas_instance *instance)
1508 {
1509 if (instance->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL)
1510 return;
1511
1512 switch (instance->pdev->device) {
1513 case PCI_DEVICE_ID_LSI_INVADER:
1514 switch (instance->pdev->subsystem_device) {
1515 case MEGARAID_INTEL_RS3DC080_SSDID:
1516 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1517 instance->host->host_no,
1518 MEGARAID_INTEL_RS3DC080_BRANDING);
1519 break;
1520 case MEGARAID_INTEL_RS3DC040_SSDID:
1521 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1522 instance->host->host_no,
1523 MEGARAID_INTEL_RS3DC040_BRANDING);
1524 break;
1525 case MEGARAID_INTEL_RS3SC008_SSDID:
1526 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1527 instance->host->host_no,
1528 MEGARAID_INTEL_RS3SC008_BRANDING);
1529 break;
1530 case MEGARAID_INTEL_RS3MC044_SSDID:
1531 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1532 instance->host->host_no,
1533 MEGARAID_INTEL_RS3MC044_BRANDING);
1534 break;
1535 default:
1536 break;
1537 }
1538 break;
1539 case PCI_DEVICE_ID_LSI_FURY:
1540 switch (instance->pdev->subsystem_device) {
1541 case MEGARAID_INTEL_RS3WC080_SSDID:
1542 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1543 instance->host->host_no,
1544 MEGARAID_INTEL_RS3WC080_BRANDING);
1545 break;
1546 case MEGARAID_INTEL_RS3WC040_SSDID:
1547 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1548 instance->host->host_no,
1549 MEGARAID_INTEL_RS3WC040_BRANDING);
1550 break;
1551 default:
1552 break;
1553 }
1554 break;
1555 case PCI_DEVICE_ID_LSI_CUTLASS_52:
1556 case PCI_DEVICE_ID_LSI_CUTLASS_53:
1557 switch (instance->pdev->subsystem_device) {
1558 case MEGARAID_INTEL_RMS3BC160_SSDID:
1559 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1560 instance->host->host_no,
1561 MEGARAID_INTEL_RMS3BC160_BRANDING);
1562 break;
1563 default:
1564 break;
1565 }
1566 break;
1567 default:
1568 break;
1569 }
1570 }
1571
1572 /**
1573 * megasas_allocate_raid_maps - Allocate memory for RAID maps
1574 * @instance: Adapter soft state
1575 *
1576 * return: if success: return 0
1577 * failed: return -ENOMEM
1578 */
1579 static inline int megasas_allocate_raid_maps(struct megasas_instance *instance)
1580 {
1581 struct fusion_context *fusion;
1582 int i = 0;
1583
1584 fusion = instance->ctrl_context;
1585
1586 fusion->drv_map_pages = get_order(fusion->drv_map_sz);
1587
1588 for (i = 0; i < 2; i++) {
1589 fusion->ld_map[i] = NULL;
1590
1591 fusion->ld_drv_map[i] = (void *)
1592 __get_free_pages(__GFP_ZERO | GFP_KERNEL,
1593 fusion->drv_map_pages);
1594
1595 if (!fusion->ld_drv_map[i]) {
1596 fusion->ld_drv_map[i] = vzalloc(fusion->drv_map_sz);
1597
1598 if (!fusion->ld_drv_map[i]) {
1599 dev_err(&instance->pdev->dev,
1600 "Could not allocate memory for local map"
1601 " size requested: %d\n",
1602 fusion->drv_map_sz);
1603 goto ld_drv_map_alloc_fail;
1604 }
1605 }
1606 }
1607
1608 for (i = 0; i < 2; i++) {
1609 fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev,
1610 fusion->max_map_sz,
1611 &fusion->ld_map_phys[i],
1612 GFP_KERNEL);
1613 if (!fusion->ld_map[i]) {
1614 dev_err(&instance->pdev->dev,
1615 "Could not allocate memory for map info %s:%d\n",
1616 __func__, __LINE__);
1617 goto ld_map_alloc_fail;
1618 }
1619 }
1620
1621 return 0;
1622
1623 ld_map_alloc_fail:
1624 for (i = 0; i < 2; i++) {
1625 if (fusion->ld_map[i])
1626 dma_free_coherent(&instance->pdev->dev,
1627 fusion->max_map_sz,
1628 fusion->ld_map[i],
1629 fusion->ld_map_phys[i]);
1630 }
1631
1632 ld_drv_map_alloc_fail:
1633 for (i = 0; i < 2; i++) {
1634 if (fusion->ld_drv_map[i]) {
1635 if (is_vmalloc_addr(fusion->ld_drv_map[i]))
1636 vfree(fusion->ld_drv_map[i]);
1637 else
1638 free_pages((ulong)fusion->ld_drv_map[i],
1639 fusion->drv_map_pages);
1640 }
1641 }
1642
1643 return -ENOMEM;
1644 }
1645
1646 /**
1647 * megasas_configure_queue_sizes - Calculate size of request desc queue,
1648 * reply desc queue,
1649 * IO request frame queue, set can_queue.
1650 * @instance: Adapter soft state
1651 * @return: void
1652 */
1653 static inline
1654 void megasas_configure_queue_sizes(struct megasas_instance *instance)
1655 {
1656 struct fusion_context *fusion;
1657 u16 max_cmd;
1658
1659 fusion = instance->ctrl_context;
1660 max_cmd = instance->max_fw_cmds;
1661
1662 if (instance->adapter_type >= VENTURA_SERIES)
1663 instance->max_mpt_cmds = instance->max_fw_cmds * RAID_1_PEER_CMDS;
1664 else
1665 instance->max_mpt_cmds = instance->max_fw_cmds;
1666
1667 instance->max_scsi_cmds = instance->max_fw_cmds - instance->max_mfi_cmds;
1668 instance->cur_can_queue = instance->max_scsi_cmds;
1669 instance->host->can_queue = instance->cur_can_queue;
1670
1671 fusion->reply_q_depth = 2 * ((max_cmd + 1 + 15) / 16) * 16;
1672
1673 fusion->request_alloc_sz = sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *
1674 instance->max_mpt_cmds;
1675 fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION) *
1676 (fusion->reply_q_depth);
1677 fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE +
1678 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE
1679 * (instance->max_mpt_cmds + 1)); /* Extra 1 for SMID 0 */
1680 }
1681
1682 static int megasas_alloc_ioc_init_frame(struct megasas_instance *instance)
1683 {
1684 struct fusion_context *fusion;
1685 struct megasas_cmd *cmd;
1686
1687 fusion = instance->ctrl_context;
1688
1689 cmd = kzalloc(sizeof(struct megasas_cmd), GFP_KERNEL);
1690
1691 if (!cmd) {
1692 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n",
1693 __func__, __LINE__);
1694 return -ENOMEM;
1695 }
1696
1697 cmd->frame = dma_alloc_coherent(&instance->pdev->dev,
1698 IOC_INIT_FRAME_SIZE,
1699 &cmd->frame_phys_addr, GFP_KERNEL);
1700
1701 if (!cmd->frame) {
1702 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n",
1703 __func__, __LINE__);
1704 kfree(cmd);
1705 return -ENOMEM;
1706 }
1707
1708 fusion->ioc_init_cmd = cmd;
1709 return 0;
1710 }
1711
1712 /**
1713 * megasas_free_ioc_init_cmd - Free IOC INIT command frame
1714 * @instance: Adapter soft state
1715 */
1716 static inline void megasas_free_ioc_init_cmd(struct megasas_instance *instance)
1717 {
1718 struct fusion_context *fusion;
1719
1720 fusion = instance->ctrl_context;
1721
1722 if (fusion->ioc_init_cmd && fusion->ioc_init_cmd->frame)
1723 dma_free_coherent(&instance->pdev->dev,
1724 IOC_INIT_FRAME_SIZE,
1725 fusion->ioc_init_cmd->frame,
1726 fusion->ioc_init_cmd->frame_phys_addr);
1727
1728 kfree(fusion->ioc_init_cmd);
1729 }
1730
1731 /**
1732 * megasas_init_adapter_fusion - Initializes the FW
1733 * @instance: Adapter soft state
1734 *
1735 * This is the main function for initializing firmware.
1736 */
1737 static u32
1738 megasas_init_adapter_fusion(struct megasas_instance *instance)
1739 {
1740 struct fusion_context *fusion;
1741 u32 scratch_pad_1;
1742 int i = 0, count;
1743 u32 status_reg;
1744
1745 fusion = instance->ctrl_context;
1746
1747 megasas_fusion_update_can_queue(instance, PROBE_CONTEXT);
1748
1749 /*
1750 * Only Driver's internal DCMDs and IOCTL DCMDs needs to have MFI frames
1751 */
1752 instance->max_mfi_cmds =
1753 MEGASAS_FUSION_INTERNAL_CMDS + MEGASAS_FUSION_IOCTL_CMDS;
1754
1755 megasas_configure_queue_sizes(instance);
1756
1757 scratch_pad_1 = megasas_readl(instance,
1758 &instance->reg_set->outbound_scratch_pad_1);
1759 /* If scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK is set,
1760 * Firmware support extended IO chain frame which is 4 times more than
1761 * legacy Firmware.
1762 * Legacy Firmware - Frame size is (8 * 128) = 1K
1763 * 1M IO Firmware - Frame size is (8 * 128 * 4) = 4K
1764 */
1765 if (scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK)
1766 instance->max_chain_frame_sz =
1767 ((scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_MASK) >>
1768 MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_1MB_IO;
1769 else
1770 instance->max_chain_frame_sz =
1771 ((scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_MASK) >>
1772 MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_256K_IO;
1773
1774 if (instance->max_chain_frame_sz < MEGASAS_CHAIN_FRAME_SZ_MIN) {
1775 dev_warn(&instance->pdev->dev, "frame size %d invalid, fall back to legacy max frame size %d\n",
1776 instance->max_chain_frame_sz,
1777 MEGASAS_CHAIN_FRAME_SZ_MIN);
1778 instance->max_chain_frame_sz = MEGASAS_CHAIN_FRAME_SZ_MIN;
1779 }
1780
1781 fusion->max_sge_in_main_msg =
1782 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE
1783 - offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16;
1784
1785 fusion->max_sge_in_chain =
1786 instance->max_chain_frame_sz
1787 / sizeof(union MPI2_SGE_IO_UNION);
1788
1789 instance->max_num_sge =
1790 rounddown_pow_of_two(fusion->max_sge_in_main_msg
1791 + fusion->max_sge_in_chain - 2);
1792
1793 /* Used for pass thru MFI frame (DCMD) */
1794 fusion->chain_offset_mfi_pthru =
1795 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16;
1796
1797 fusion->chain_offset_io_request =
1798 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
1799 sizeof(union MPI2_SGE_IO_UNION))/16;
1800
1801 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
1802 for (i = 0 ; i < count; i++)
1803 fusion->last_reply_idx[i] = 0;
1804
1805 /*
1806 * For fusion adapters, 3 commands for IOCTL and 8 commands
1807 * for driver's internal DCMDs.
1808 */
1809 instance->max_scsi_cmds = instance->max_fw_cmds -
1810 (MEGASAS_FUSION_INTERNAL_CMDS +
1811 MEGASAS_FUSION_IOCTL_CMDS);
1812 sema_init(&instance->ioctl_sem, MEGASAS_FUSION_IOCTL_CMDS);
1813
1814 if (megasas_alloc_ioc_init_frame(instance))
1815 return 1;
1816
1817 /*
1818 * Allocate memory for descriptors
1819 * Create a pool of commands
1820 */
1821 if (megasas_alloc_cmds(instance))
1822 goto fail_alloc_mfi_cmds;
1823 if (megasas_alloc_cmds_fusion(instance))
1824 goto fail_alloc_cmds;
1825
1826 if (megasas_ioc_init_fusion(instance)) {
1827 status_reg = instance->instancet->read_fw_status_reg(instance);
1828 if (((status_reg & MFI_STATE_MASK) == MFI_STATE_FAULT) &&
1829 (status_reg & MFI_RESET_ADAPTER)) {
1830 /* Do a chip reset and then retry IOC INIT once */
1831 if (megasas_adp_reset_wait_for_ready
1832 (instance, true, 0) == FAILED)
1833 goto fail_ioc_init;
1834
1835 if (megasas_ioc_init_fusion(instance))
1836 goto fail_ioc_init;
1837 } else {
1838 goto fail_ioc_init;
1839 }
1840 }
1841
1842 megasas_display_intel_branding(instance);
1843 if (megasas_get_ctrl_info(instance)) {
1844 dev_err(&instance->pdev->dev,
1845 "Could not get controller info. Fail from %s %d\n",
1846 __func__, __LINE__);
1847 goto fail_ioc_init;
1848 }
1849
1850 instance->flag_ieee = 1;
1851 instance->r1_ldio_hint_default = MR_R1_LDIO_PIGGYBACK_DEFAULT;
1852 instance->threshold_reply_count = instance->max_fw_cmds / 4;
1853 fusion->fast_path_io = 0;
1854
1855 if (megasas_allocate_raid_maps(instance))
1856 goto fail_ioc_init;
1857
1858 if (!megasas_get_map_info(instance))
1859 megasas_sync_map_info(instance);
1860
1861 return 0;
1862
1863 fail_ioc_init:
1864 megasas_free_cmds_fusion(instance);
1865 fail_alloc_cmds:
1866 megasas_free_cmds(instance);
1867 fail_alloc_mfi_cmds:
1868 megasas_free_ioc_init_cmd(instance);
1869 return 1;
1870 }
1871
1872 /**
1873 * megasas_fault_detect_work - Worker function of
1874 * FW fault handling workqueue.
1875 */
1876 static void
1877 megasas_fault_detect_work(struct work_struct *work)
1878 {
1879 struct megasas_instance *instance =
1880 container_of(work, struct megasas_instance,
1881 fw_fault_work.work);
1882 u32 fw_state, dma_state, status;
1883
1884 /* Check the fw state */
1885 fw_state = instance->instancet->read_fw_status_reg(instance) &
1886 MFI_STATE_MASK;
1887
1888 if (fw_state == MFI_STATE_FAULT) {
1889 dma_state = instance->instancet->read_fw_status_reg(instance) &
1890 MFI_STATE_DMADONE;
1891 /* Start collecting crash, if DMA bit is done */
1892 if (instance->crash_dump_drv_support &&
1893 instance->crash_dump_app_support && dma_state) {
1894 megasas_fusion_crash_dump(instance);
1895 } else {
1896 if (instance->unload == 0) {
1897 status = megasas_reset_fusion(instance->host, 0);
1898 if (status != SUCCESS) {
1899 dev_err(&instance->pdev->dev,
1900 "Failed from %s %d, do not re-arm timer\n",
1901 __func__, __LINE__);
1902 return;
1903 }
1904 }
1905 }
1906 }
1907
1908 if (instance->fw_fault_work_q)
1909 queue_delayed_work(instance->fw_fault_work_q,
1910 &instance->fw_fault_work,
1911 msecs_to_jiffies(MEGASAS_WATCHDOG_THREAD_INTERVAL));
1912 }
1913
1914 int
1915 megasas_fusion_start_watchdog(struct megasas_instance *instance)
1916 {
1917 /* Check if the Fault WQ is already started */
1918 if (instance->fw_fault_work_q)
1919 return SUCCESS;
1920
1921 INIT_DELAYED_WORK(&instance->fw_fault_work, megasas_fault_detect_work);
1922
1923 snprintf(instance->fault_handler_work_q_name,
1924 sizeof(instance->fault_handler_work_q_name),
1925 "poll_megasas%d_status", instance->host->host_no);
1926
1927 instance->fw_fault_work_q =
1928 create_singlethread_workqueue(instance->fault_handler_work_q_name);
1929 if (!instance->fw_fault_work_q) {
1930 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1931 __func__, __LINE__);
1932 return FAILED;
1933 }
1934
1935 queue_delayed_work(instance->fw_fault_work_q,
1936 &instance->fw_fault_work,
1937 msecs_to_jiffies(MEGASAS_WATCHDOG_THREAD_INTERVAL));
1938
1939 return SUCCESS;
1940 }
1941
1942 void
1943 megasas_fusion_stop_watchdog(struct megasas_instance *instance)
1944 {
1945 struct workqueue_struct *wq;
1946
1947 if (instance->fw_fault_work_q) {
1948 wq = instance->fw_fault_work_q;
1949 instance->fw_fault_work_q = NULL;
1950 if (!cancel_delayed_work_sync(&instance->fw_fault_work))
1951 flush_workqueue(wq);
1952 destroy_workqueue(wq);
1953 }
1954 }
1955
1956 /**
1957 * map_cmd_status - Maps FW cmd status to OS cmd status
1958 * @cmd : Pointer to cmd
1959 * @status : status of cmd returned by FW
1960 * @ext_status : ext status of cmd returned by FW
1961 */
1962
1963 static void
1964 map_cmd_status(struct fusion_context *fusion,
1965 struct scsi_cmnd *scmd, u8 status, u8 ext_status,
1966 u32 data_length, u8 *sense)
1967 {
1968 u8 cmd_type;
1969 int resid;
1970
1971 cmd_type = megasas_cmd_type(scmd);
1972 switch (status) {
1973
1974 case MFI_STAT_OK:
1975 scmd->result = DID_OK << 16;
1976 break;
1977
1978 case MFI_STAT_SCSI_IO_FAILED:
1979 case MFI_STAT_LD_INIT_IN_PROGRESS:
1980 scmd->result = (DID_ERROR << 16) | ext_status;
1981 break;
1982
1983 case MFI_STAT_SCSI_DONE_WITH_ERROR:
1984
1985 scmd->result = (DID_OK << 16) | ext_status;
1986 if (ext_status == SAM_STAT_CHECK_CONDITION) {
1987 memset(scmd->sense_buffer, 0,
1988 SCSI_SENSE_BUFFERSIZE);
1989 memcpy(scmd->sense_buffer, sense,
1990 SCSI_SENSE_BUFFERSIZE);
1991 scmd->result |= DRIVER_SENSE << 24;
1992 }
1993
1994 /*
1995 * If the IO request is partially completed, then MR FW will
1996 * update "io_request->DataLength" field with actual number of
1997 * bytes transferred.Driver will set residual bytes count in
1998 * SCSI command structure.
1999 */
2000 resid = (scsi_bufflen(scmd) - data_length);
2001 scsi_set_resid(scmd, resid);
2002
2003 if (resid &&
2004 ((cmd_type == READ_WRITE_LDIO) ||
2005 (cmd_type == READ_WRITE_SYSPDIO)))
2006 scmd_printk(KERN_INFO, scmd, "BRCM Debug mfi stat 0x%x, data len"
2007 " requested/completed 0x%x/0x%x\n",
2008 status, scsi_bufflen(scmd), data_length);
2009 break;
2010
2011 case MFI_STAT_LD_OFFLINE:
2012 case MFI_STAT_DEVICE_NOT_FOUND:
2013 scmd->result = DID_BAD_TARGET << 16;
2014 break;
2015 case MFI_STAT_CONFIG_SEQ_MISMATCH:
2016 scmd->result = DID_IMM_RETRY << 16;
2017 break;
2018 default:
2019 scmd->result = DID_ERROR << 16;
2020 break;
2021 }
2022 }
2023
2024 /**
2025 * megasas_is_prp_possible -
2026 * Checks if native NVMe PRPs can be built for the IO
2027 *
2028 * @instance: Adapter soft state
2029 * @scmd: SCSI command from the mid-layer
2030 * @sge_count: scatter gather element count.
2031 *
2032 * Returns: true: PRPs can be built
2033 * false: IEEE SGLs needs to be built
2034 */
2035 static bool
2036 megasas_is_prp_possible(struct megasas_instance *instance,
2037 struct scsi_cmnd *scmd, int sge_count)
2038 {
2039 int i;
2040 u32 data_length = 0;
2041 struct scatterlist *sg_scmd;
2042 bool build_prp = false;
2043 u32 mr_nvme_pg_size;
2044
2045 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
2046 MR_DEFAULT_NVME_PAGE_SIZE);
2047 data_length = scsi_bufflen(scmd);
2048 sg_scmd = scsi_sglist(scmd);
2049
2050 /*
2051 * NVMe uses one PRP for each page (or part of a page)
2052 * look at the data length - if 4 pages or less then IEEE is OK
2053 * if > 5 pages then we need to build a native SGL
2054 * if > 4 and <= 5 pages, then check physical address of 1st SG entry
2055 * if this first size in the page is >= the residual beyond 4 pages
2056 * then use IEEE, otherwise use native SGL
2057 */
2058
2059 if (data_length > (mr_nvme_pg_size * 5)) {
2060 build_prp = true;
2061 } else if ((data_length > (mr_nvme_pg_size * 4)) &&
2062 (data_length <= (mr_nvme_pg_size * 5))) {
2063 /* check if 1st SG entry size is < residual beyond 4 pages */
2064 if (sg_dma_len(sg_scmd) < (data_length - (mr_nvme_pg_size * 4)))
2065 build_prp = true;
2066 }
2067
2068 /*
2069 * Below code detects gaps/holes in IO data buffers.
2070 * What does holes/gaps mean?
2071 * Any SGE except first one in a SGL starts at non NVME page size
2072 * aligned address OR Any SGE except last one in a SGL ends at
2073 * non NVME page size boundary.
2074 *
2075 * Driver has already informed block layer by setting boundary rules for
2076 * bio merging done at NVME page size boundary calling kernel API
2077 * blk_queue_virt_boundary inside slave_config.
2078 * Still there is possibility of IO coming with holes to driver because of
2079 * IO merging done by IO scheduler.
2080 *
2081 * With SCSI BLK MQ enabled, there will be no IO with holes as there is no
2082 * IO scheduling so no IO merging.
2083 *
2084 * With SCSI BLK MQ disabled, IO scheduler may attempt to merge IOs and
2085 * then sending IOs with holes.
2086 *
2087 * Though driver can request block layer to disable IO merging by calling-
2088 * blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue) but
2089 * user may tune sysfs parameter- nomerges again to 0 or 1.
2090 *
2091 * If in future IO scheduling is enabled with SCSI BLK MQ,
2092 * this algorithm to detect holes will be required in driver
2093 * for SCSI BLK MQ enabled case as well.
2094 *
2095 *
2096 */
2097 scsi_for_each_sg(scmd, sg_scmd, sge_count, i) {
2098 if ((i != 0) && (i != (sge_count - 1))) {
2099 if (mega_mod64(sg_dma_len(sg_scmd), mr_nvme_pg_size) ||
2100 mega_mod64(sg_dma_address(sg_scmd),
2101 mr_nvme_pg_size)) {
2102 build_prp = false;
2103 break;
2104 }
2105 }
2106
2107 if ((sge_count > 1) && (i == 0)) {
2108 if ((mega_mod64((sg_dma_address(sg_scmd) +
2109 sg_dma_len(sg_scmd)),
2110 mr_nvme_pg_size))) {
2111 build_prp = false;
2112 break;
2113 }
2114 }
2115
2116 if ((sge_count > 1) && (i == (sge_count - 1))) {
2117 if (mega_mod64(sg_dma_address(sg_scmd),
2118 mr_nvme_pg_size)) {
2119 build_prp = false;
2120 break;
2121 }
2122 }
2123 }
2124
2125 return build_prp;
2126 }
2127
2128 /**
2129 * megasas_make_prp_nvme -
2130 * Prepare PRPs(Physical Region Page)- SGLs specific to NVMe drives only
2131 *
2132 * @instance: Adapter soft state
2133 * @scmd: SCSI command from the mid-layer
2134 * @sgl_ptr: SGL to be filled in
2135 * @cmd: Fusion command frame
2136 * @sge_count: scatter gather element count.
2137 *
2138 * Returns: true: PRPs are built
2139 * false: IEEE SGLs needs to be built
2140 */
2141 static bool
2142 megasas_make_prp_nvme(struct megasas_instance *instance, struct scsi_cmnd *scmd,
2143 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
2144 struct megasas_cmd_fusion *cmd, int sge_count)
2145 {
2146 int sge_len, offset, num_prp_in_chain = 0;
2147 struct MPI25_IEEE_SGE_CHAIN64 *main_chain_element, *ptr_first_sgl;
2148 u64 *ptr_sgl;
2149 dma_addr_t ptr_sgl_phys;
2150 u64 sge_addr;
2151 u32 page_mask, page_mask_result;
2152 struct scatterlist *sg_scmd;
2153 u32 first_prp_len;
2154 bool build_prp = false;
2155 int data_len = scsi_bufflen(scmd);
2156 u32 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
2157 MR_DEFAULT_NVME_PAGE_SIZE);
2158
2159 build_prp = megasas_is_prp_possible(instance, scmd, sge_count);
2160
2161 if (!build_prp)
2162 return false;
2163
2164 /*
2165 * Nvme has a very convoluted prp format. One prp is required
2166 * for each page or partial page. Driver need to split up OS sg_list
2167 * entries if it is longer than one page or cross a page
2168 * boundary. Driver also have to insert a PRP list pointer entry as
2169 * the last entry in each physical page of the PRP list.
2170 *
2171 * NOTE: The first PRP "entry" is actually placed in the first
2172 * SGL entry in the main message as IEEE 64 format. The 2nd
2173 * entry in the main message is the chain element, and the rest
2174 * of the PRP entries are built in the contiguous pcie buffer.
2175 */
2176 page_mask = mr_nvme_pg_size - 1;
2177 ptr_sgl = (u64 *)cmd->sg_frame;
2178 ptr_sgl_phys = cmd->sg_frame_phys_addr;
2179 memset(ptr_sgl, 0, instance->max_chain_frame_sz);
2180
2181 /* Build chain frame element which holds all prps except first*/
2182 main_chain_element = (struct MPI25_IEEE_SGE_CHAIN64 *)
2183 ((u8 *)sgl_ptr + sizeof(struct MPI25_IEEE_SGE_CHAIN64));
2184
2185 main_chain_element->Address = cpu_to_le64(ptr_sgl_phys);
2186 main_chain_element->NextChainOffset = 0;
2187 main_chain_element->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
2188 IEEE_SGE_FLAGS_SYSTEM_ADDR |
2189 MPI26_IEEE_SGE_FLAGS_NSF_NVME_PRP;
2190
2191 /* Build first prp, sge need not to be page aligned*/
2192 ptr_first_sgl = sgl_ptr;
2193 sg_scmd = scsi_sglist(scmd);
2194 sge_addr = sg_dma_address(sg_scmd);
2195 sge_len = sg_dma_len(sg_scmd);
2196
2197 offset = (u32)(sge_addr & page_mask);
2198 first_prp_len = mr_nvme_pg_size - offset;
2199
2200 ptr_first_sgl->Address = cpu_to_le64(sge_addr);
2201 ptr_first_sgl->Length = cpu_to_le32(first_prp_len);
2202
2203 data_len -= first_prp_len;
2204
2205 if (sge_len > first_prp_len) {
2206 sge_addr += first_prp_len;
2207 sge_len -= first_prp_len;
2208 } else if (sge_len == first_prp_len) {
2209 sg_scmd = sg_next(sg_scmd);
2210 sge_addr = sg_dma_address(sg_scmd);
2211 sge_len = sg_dma_len(sg_scmd);
2212 }
2213
2214 for (;;) {
2215 offset = (u32)(sge_addr & page_mask);
2216
2217 /* Put PRP pointer due to page boundary*/
2218 page_mask_result = (uintptr_t)(ptr_sgl + 1) & page_mask;
2219 if (unlikely(!page_mask_result)) {
2220 scmd_printk(KERN_NOTICE,
2221 scmd, "page boundary ptr_sgl: 0x%p\n",
2222 ptr_sgl);
2223 ptr_sgl_phys += 8;
2224 *ptr_sgl = cpu_to_le64(ptr_sgl_phys);
2225 ptr_sgl++;
2226 num_prp_in_chain++;
2227 }
2228
2229 *ptr_sgl = cpu_to_le64(sge_addr);
2230 ptr_sgl++;
2231 ptr_sgl_phys += 8;
2232 num_prp_in_chain++;
2233
2234 sge_addr += mr_nvme_pg_size;
2235 sge_len -= mr_nvme_pg_size;
2236 data_len -= mr_nvme_pg_size;
2237
2238 if (data_len <= 0)
2239 break;
2240
2241 if (sge_len > 0)
2242 continue;
2243
2244 sg_scmd = sg_next(sg_scmd);
2245 sge_addr = sg_dma_address(sg_scmd);
2246 sge_len = sg_dma_len(sg_scmd);
2247 }
2248
2249 main_chain_element->Length =
2250 cpu_to_le32(num_prp_in_chain * sizeof(u64));
2251
2252 return build_prp;
2253 }
2254
2255 /**
2256 * megasas_make_sgl_fusion - Prepares 32-bit SGL
2257 * @instance: Adapter soft state
2258 * @scp: SCSI command from the mid-layer
2259 * @sgl_ptr: SGL to be filled in
2260 * @cmd: cmd we are working on
2261 * @sge_count sge count
2262 *
2263 */
2264 static void
2265 megasas_make_sgl_fusion(struct megasas_instance *instance,
2266 struct scsi_cmnd *scp,
2267 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
2268 struct megasas_cmd_fusion *cmd, int sge_count)
2269 {
2270 int i, sg_processed;
2271 struct scatterlist *os_sgl;
2272 struct fusion_context *fusion;
2273
2274 fusion = instance->ctrl_context;
2275
2276 if (instance->adapter_type >= INVADER_SERIES) {
2277 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr;
2278 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
2279 sgl_ptr_end->Flags = 0;
2280 }
2281
2282 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
2283 sgl_ptr->Length = cpu_to_le32(sg_dma_len(os_sgl));
2284 sgl_ptr->Address = cpu_to_le64(sg_dma_address(os_sgl));
2285 sgl_ptr->Flags = 0;
2286 if (instance->adapter_type >= INVADER_SERIES)
2287 if (i == sge_count - 1)
2288 sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST;
2289 sgl_ptr++;
2290 sg_processed = i + 1;
2291
2292 if ((sg_processed == (fusion->max_sge_in_main_msg - 1)) &&
2293 (sge_count > fusion->max_sge_in_main_msg)) {
2294
2295 struct MPI25_IEEE_SGE_CHAIN64 *sg_chain;
2296 if (instance->adapter_type >= INVADER_SERIES) {
2297 if ((le16_to_cpu(cmd->io_request->IoFlags) &
2298 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) !=
2299 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH)
2300 cmd->io_request->ChainOffset =
2301 fusion->
2302 chain_offset_io_request;
2303 else
2304 cmd->io_request->ChainOffset = 0;
2305 } else
2306 cmd->io_request->ChainOffset =
2307 fusion->chain_offset_io_request;
2308
2309 sg_chain = sgl_ptr;
2310 /* Prepare chain element */
2311 sg_chain->NextChainOffset = 0;
2312 if (instance->adapter_type >= INVADER_SERIES)
2313 sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT;
2314 else
2315 sg_chain->Flags =
2316 (IEEE_SGE_FLAGS_CHAIN_ELEMENT |
2317 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR);
2318 sg_chain->Length = cpu_to_le32((sizeof(union MPI2_SGE_IO_UNION) * (sge_count - sg_processed)));
2319 sg_chain->Address = cpu_to_le64(cmd->sg_frame_phys_addr);
2320
2321 sgl_ptr =
2322 (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame;
2323 memset(sgl_ptr, 0, instance->max_chain_frame_sz);
2324 }
2325 }
2326 }
2327
2328 /**
2329 * megasas_make_sgl - Build Scatter Gather List(SGLs)
2330 * @scp: SCSI command pointer
2331 * @instance: Soft instance of controller
2332 * @cmd: Fusion command pointer
2333 *
2334 * This function will build sgls based on device type.
2335 * For nvme drives, there is different way of building sgls in nvme native
2336 * format- PRPs(Physical Region Page).
2337 *
2338 * Returns the number of sg lists actually used, zero if the sg lists
2339 * is NULL, or -ENOMEM if the mapping failed
2340 */
2341 static
2342 int megasas_make_sgl(struct megasas_instance *instance, struct scsi_cmnd *scp,
2343 struct megasas_cmd_fusion *cmd)
2344 {
2345 int sge_count;
2346 bool build_prp = false;
2347 struct MPI25_IEEE_SGE_CHAIN64 *sgl_chain64;
2348
2349 sge_count = scsi_dma_map(scp);
2350
2351 if ((sge_count > instance->max_num_sge) || (sge_count <= 0))
2352 return sge_count;
2353
2354 sgl_chain64 = (struct MPI25_IEEE_SGE_CHAIN64 *)&cmd->io_request->SGL;
2355 if ((le16_to_cpu(cmd->io_request->IoFlags) &
2356 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) &&
2357 (cmd->pd_interface == NVME_PD))
2358 build_prp = megasas_make_prp_nvme(instance, scp, sgl_chain64,
2359 cmd, sge_count);
2360
2361 if (!build_prp)
2362 megasas_make_sgl_fusion(instance, scp, sgl_chain64,
2363 cmd, sge_count);
2364
2365 return sge_count;
2366 }
2367
2368 /**
2369 * megasas_set_pd_lba - Sets PD LBA
2370 * @cdb: CDB
2371 * @cdb_len: cdb length
2372 * @start_blk: Start block of IO
2373 *
2374 * Used to set the PD LBA in CDB for FP IOs
2375 */
2376 static void
2377 megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len,
2378 struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp,
2379 struct MR_DRV_RAID_MAP_ALL *local_map_ptr, u32 ref_tag)
2380 {
2381 struct MR_LD_RAID *raid;
2382 u16 ld;
2383 u64 start_blk = io_info->pdBlock;
2384 u8 *cdb = io_request->CDB.CDB32;
2385 u32 num_blocks = io_info->numBlocks;
2386 u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0;
2387
2388 /* Check if T10 PI (DIF) is enabled for this LD */
2389 ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr);
2390 raid = MR_LdRaidGet(ld, local_map_ptr);
2391 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) {
2392 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2393 cdb[0] = MEGASAS_SCSI_VARIABLE_LENGTH_CMD;
2394 cdb[7] = MEGASAS_SCSI_ADDL_CDB_LEN;
2395
2396 if (scp->sc_data_direction == DMA_FROM_DEVICE)
2397 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32;
2398 else
2399 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32;
2400 cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL;
2401
2402 /* LBA */
2403 cdb[12] = (u8)((start_blk >> 56) & 0xff);
2404 cdb[13] = (u8)((start_blk >> 48) & 0xff);
2405 cdb[14] = (u8)((start_blk >> 40) & 0xff);
2406 cdb[15] = (u8)((start_blk >> 32) & 0xff);
2407 cdb[16] = (u8)((start_blk >> 24) & 0xff);
2408 cdb[17] = (u8)((start_blk >> 16) & 0xff);
2409 cdb[18] = (u8)((start_blk >> 8) & 0xff);
2410 cdb[19] = (u8)(start_blk & 0xff);
2411
2412 /* Logical block reference tag */
2413 io_request->CDB.EEDP32.PrimaryReferenceTag =
2414 cpu_to_be32(ref_tag);
2415 io_request->CDB.EEDP32.PrimaryApplicationTagMask = cpu_to_be16(0xffff);
2416 io_request->IoFlags = cpu_to_le16(32); /* Specify 32-byte cdb */
2417
2418 /* Transfer length */
2419 cdb[28] = (u8)((num_blocks >> 24) & 0xff);
2420 cdb[29] = (u8)((num_blocks >> 16) & 0xff);
2421 cdb[30] = (u8)((num_blocks >> 8) & 0xff);
2422 cdb[31] = (u8)(num_blocks & 0xff);
2423
2424 /* set SCSI IO EEDPFlags */
2425 if (scp->sc_data_direction == DMA_FROM_DEVICE) {
2426 io_request->EEDPFlags = cpu_to_le16(
2427 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
2428 MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
2429 MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP |
2430 MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG |
2431 MPI25_SCSIIO_EEDPFLAGS_DO_NOT_DISABLE_MODE |
2432 MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD);
2433 } else {
2434 io_request->EEDPFlags = cpu_to_le16(
2435 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
2436 MPI2_SCSIIO_EEDPFLAGS_INSERT_OP);
2437 }
2438 io_request->Control |= cpu_to_le32((0x4 << 26));
2439 io_request->EEDPBlockSize = cpu_to_le32(scp->device->sector_size);
2440 } else {
2441 /* Some drives don't support 16/12 byte CDB's, convert to 10 */
2442 if (((cdb_len == 12) || (cdb_len == 16)) &&
2443 (start_blk <= 0xffffffff)) {
2444 if (cdb_len == 16) {
2445 opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10;
2446 flagvals = cdb[1];
2447 groupnum = cdb[14];
2448 control = cdb[15];
2449 } else {
2450 opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10;
2451 flagvals = cdb[1];
2452 groupnum = cdb[10];
2453 control = cdb[11];
2454 }
2455
2456 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2457
2458 cdb[0] = opcode;
2459 cdb[1] = flagvals;
2460 cdb[6] = groupnum;
2461 cdb[9] = control;
2462
2463 /* Transfer length */
2464 cdb[8] = (u8)(num_blocks & 0xff);
2465 cdb[7] = (u8)((num_blocks >> 8) & 0xff);
2466
2467 io_request->IoFlags = cpu_to_le16(10); /* Specify 10-byte cdb */
2468 cdb_len = 10;
2469 } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) {
2470 /* Convert to 16 byte CDB for large LBA's */
2471 switch (cdb_len) {
2472 case 6:
2473 opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16;
2474 control = cdb[5];
2475 break;
2476 case 10:
2477 opcode =
2478 cdb[0] == READ_10 ? READ_16 : WRITE_16;
2479 flagvals = cdb[1];
2480 groupnum = cdb[6];
2481 control = cdb[9];
2482 break;
2483 case 12:
2484 opcode =
2485 cdb[0] == READ_12 ? READ_16 : WRITE_16;
2486 flagvals = cdb[1];
2487 groupnum = cdb[10];
2488 control = cdb[11];
2489 break;
2490 }
2491
2492 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2493
2494 cdb[0] = opcode;
2495 cdb[1] = flagvals;
2496 cdb[14] = groupnum;
2497 cdb[15] = control;
2498
2499 /* Transfer length */
2500 cdb[13] = (u8)(num_blocks & 0xff);
2501 cdb[12] = (u8)((num_blocks >> 8) & 0xff);
2502 cdb[11] = (u8)((num_blocks >> 16) & 0xff);
2503 cdb[10] = (u8)((num_blocks >> 24) & 0xff);
2504
2505 io_request->IoFlags = cpu_to_le16(16); /* Specify 16-byte cdb */
2506 cdb_len = 16;
2507 }
2508
2509 /* Normal case, just load LBA here */
2510 switch (cdb_len) {
2511 case 6:
2512 {
2513 u8 val = cdb[1] & 0xE0;
2514 cdb[3] = (u8)(start_blk & 0xff);
2515 cdb[2] = (u8)((start_blk >> 8) & 0xff);
2516 cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f);
2517 break;
2518 }
2519 case 10:
2520 cdb[5] = (u8)(start_blk & 0xff);
2521 cdb[4] = (u8)((start_blk >> 8) & 0xff);
2522 cdb[3] = (u8)((start_blk >> 16) & 0xff);
2523 cdb[2] = (u8)((start_blk >> 24) & 0xff);
2524 break;
2525 case 12:
2526 cdb[5] = (u8)(start_blk & 0xff);
2527 cdb[4] = (u8)((start_blk >> 8) & 0xff);
2528 cdb[3] = (u8)((start_blk >> 16) & 0xff);
2529 cdb[2] = (u8)((start_blk >> 24) & 0xff);
2530 break;
2531 case 16:
2532 cdb[9] = (u8)(start_blk & 0xff);
2533 cdb[8] = (u8)((start_blk >> 8) & 0xff);
2534 cdb[7] = (u8)((start_blk >> 16) & 0xff);
2535 cdb[6] = (u8)((start_blk >> 24) & 0xff);
2536 cdb[5] = (u8)((start_blk >> 32) & 0xff);
2537 cdb[4] = (u8)((start_blk >> 40) & 0xff);
2538 cdb[3] = (u8)((start_blk >> 48) & 0xff);
2539 cdb[2] = (u8)((start_blk >> 56) & 0xff);
2540 break;
2541 }
2542 }
2543 }
2544
2545 /**
2546 * megasas_stream_detect - stream detection on read and and write IOs
2547 * @instance: Adapter soft state
2548 * @cmd: Command to be prepared
2549 * @io_info: IO Request info
2550 *
2551 */
2552
2553 /** stream detection on read and and write IOs */
2554 static void megasas_stream_detect(struct megasas_instance *instance,
2555 struct megasas_cmd_fusion *cmd,
2556 struct IO_REQUEST_INFO *io_info)
2557 {
2558 struct fusion_context *fusion = instance->ctrl_context;
2559 u32 device_id = io_info->ldTgtId;
2560 struct LD_STREAM_DETECT *current_ld_sd
2561 = fusion->stream_detect_by_ld[device_id];
2562 u32 *track_stream = &current_ld_sd->mru_bit_map, stream_num;
2563 u32 shifted_values, unshifted_values;
2564 u32 index_value_mask, shifted_values_mask;
2565 int i;
2566 bool is_read_ahead = false;
2567 struct STREAM_DETECT *current_sd;
2568 /* find possible stream */
2569 for (i = 0; i < MAX_STREAMS_TRACKED; ++i) {
2570 stream_num = (*track_stream >>
2571 (i * BITS_PER_INDEX_STREAM)) &
2572 STREAM_MASK;
2573 current_sd = &current_ld_sd->stream_track[stream_num];
2574 /* if we found a stream, update the raid
2575 * context and also update the mruBitMap
2576 */
2577 /* boundary condition */
2578 if ((current_sd->next_seq_lba) &&
2579 (io_info->ldStartBlock >= current_sd->next_seq_lba) &&
2580 (io_info->ldStartBlock <= (current_sd->next_seq_lba + 32)) &&
2581 (current_sd->is_read == io_info->isRead)) {
2582
2583 if ((io_info->ldStartBlock != current_sd->next_seq_lba) &&
2584 ((!io_info->isRead) || (!is_read_ahead)))
2585 /*
2586 * Once the API availible we need to change this.
2587 * At this point we are not allowing any gap
2588 */
2589 continue;
2590
2591 SET_STREAM_DETECTED(cmd->io_request->RaidContext.raid_context_g35);
2592 current_sd->next_seq_lba =
2593 io_info->ldStartBlock + io_info->numBlocks;
2594 /*
2595 * update the mruBitMap LRU
2596 */
2597 shifted_values_mask =
2598 (1 << i * BITS_PER_INDEX_STREAM) - 1;
2599 shifted_values = ((*track_stream & shifted_values_mask)
2600 << BITS_PER_INDEX_STREAM);
2601 index_value_mask =
2602 STREAM_MASK << i * BITS_PER_INDEX_STREAM;
2603 unshifted_values =
2604 *track_stream & ~(shifted_values_mask |
2605 index_value_mask);
2606 *track_stream =
2607 unshifted_values | shifted_values | stream_num;
2608 return;
2609 }
2610 }
2611 /*
2612 * if we did not find any stream, create a new one
2613 * from the least recently used
2614 */
2615 stream_num = (*track_stream >>
2616 ((MAX_STREAMS_TRACKED - 1) * BITS_PER_INDEX_STREAM)) &
2617 STREAM_MASK;
2618 current_sd = &current_ld_sd->stream_track[stream_num];
2619 current_sd->is_read = io_info->isRead;
2620 current_sd->next_seq_lba = io_info->ldStartBlock + io_info->numBlocks;
2621 *track_stream = (((*track_stream & ZERO_LAST_STREAM) << 4) | stream_num);
2622 return;
2623 }
2624
2625 /**
2626 * megasas_set_raidflag_cpu_affinity - This function sets the cpu
2627 * affinity (cpu of the controller) and raid_flags in the raid context
2628 * based on IO type.
2629 *
2630 * @praid_context: IO RAID context
2631 * @raid: LD raid map
2632 * @fp_possible: Is fast path possible?
2633 * @is_read: Is read IO?
2634 *
2635 */
2636 static void
2637 megasas_set_raidflag_cpu_affinity(struct fusion_context *fusion,
2638 union RAID_CONTEXT_UNION *praid_context,
2639 struct MR_LD_RAID *raid, bool fp_possible,
2640 u8 is_read, u32 scsi_buff_len)
2641 {
2642 u8 cpu_sel = MR_RAID_CTX_CPUSEL_0;
2643 struct RAID_CONTEXT_G35 *rctx_g35;
2644
2645 rctx_g35 = &praid_context->raid_context_g35;
2646 if (fp_possible) {
2647 if (is_read) {
2648 if ((raid->cpuAffinity.pdRead.cpu0) &&
2649 (raid->cpuAffinity.pdRead.cpu1))
2650 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2651 else if (raid->cpuAffinity.pdRead.cpu1)
2652 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2653 } else {
2654 if ((raid->cpuAffinity.pdWrite.cpu0) &&
2655 (raid->cpuAffinity.pdWrite.cpu1))
2656 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2657 else if (raid->cpuAffinity.pdWrite.cpu1)
2658 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2659 /* Fast path cache by pass capable R0/R1 VD */
2660 if ((raid->level <= 1) &&
2661 (raid->capability.fp_cache_bypass_capable)) {
2662 rctx_g35->routing_flags |=
2663 (1 << MR_RAID_CTX_ROUTINGFLAGS_SLD_SHIFT);
2664 rctx_g35->raid_flags =
2665 (MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS
2666 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT);
2667 }
2668 }
2669 } else {
2670 if (is_read) {
2671 if ((raid->cpuAffinity.ldRead.cpu0) &&
2672 (raid->cpuAffinity.ldRead.cpu1))
2673 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2674 else if (raid->cpuAffinity.ldRead.cpu1)
2675 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2676 } else {
2677 if ((raid->cpuAffinity.ldWrite.cpu0) &&
2678 (raid->cpuAffinity.ldWrite.cpu1))
2679 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2680 else if (raid->cpuAffinity.ldWrite.cpu1)
2681 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2682
2683 if (is_stream_detected(rctx_g35) &&
2684 ((raid->level == 5) || (raid->level == 6)) &&
2685 (raid->writeMode == MR_RL_WRITE_THROUGH_MODE) &&
2686 (cpu_sel == MR_RAID_CTX_CPUSEL_FCFS))
2687 cpu_sel = MR_RAID_CTX_CPUSEL_0;
2688 }
2689 }
2690
2691 rctx_g35->routing_flags |=
2692 (cpu_sel << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT);
2693
2694 /* Always give priority to MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT
2695 * vs MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS.
2696 * IO Subtype is not bitmap.
2697 */
2698 if ((fusion->pcie_bw_limitation) && (raid->level == 1) && (!is_read) &&
2699 (scsi_buff_len > MR_LARGE_IO_MIN_SIZE)) {
2700 praid_context->raid_context_g35.raid_flags =
2701 (MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT
2702 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT);
2703 }
2704 }
2705
2706 /**
2707 * megasas_build_ldio_fusion - Prepares IOs to devices
2708 * @instance: Adapter soft state
2709 * @scp: SCSI command
2710 * @cmd: Command to be prepared
2711 *
2712 * Prepares the io_request and chain elements (sg_frame) for IO
2713 * The IO can be for PD (Fast Path) or LD
2714 */
2715 static void
2716 megasas_build_ldio_fusion(struct megasas_instance *instance,
2717 struct scsi_cmnd *scp,
2718 struct megasas_cmd_fusion *cmd)
2719 {
2720 bool fp_possible;
2721 u16 ld;
2722 u32 start_lba_lo, start_lba_hi, device_id, datalength = 0;
2723 u32 scsi_buff_len;
2724 struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
2725 struct IO_REQUEST_INFO io_info;
2726 struct fusion_context *fusion;
2727 struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
2728 u8 *raidLUN;
2729 unsigned long spinlock_flags;
2730 struct MR_LD_RAID *raid = NULL;
2731 struct MR_PRIV_DEVICE *mrdev_priv;
2732 struct RAID_CONTEXT *rctx;
2733 struct RAID_CONTEXT_G35 *rctx_g35;
2734
2735 device_id = MEGASAS_DEV_INDEX(scp);
2736
2737 fusion = instance->ctrl_context;
2738
2739 io_request = cmd->io_request;
2740 rctx = &io_request->RaidContext.raid_context;
2741 rctx_g35 = &io_request->RaidContext.raid_context_g35;
2742
2743 rctx->virtual_disk_tgt_id = cpu_to_le16(device_id);
2744 rctx->status = 0;
2745 rctx->ex_status = 0;
2746
2747 start_lba_lo = 0;
2748 start_lba_hi = 0;
2749 fp_possible = false;
2750
2751 /*
2752 * 6-byte READ(0x08) or WRITE(0x0A) cdb
2753 */
2754 if (scp->cmd_len == 6) {
2755 datalength = (u32) scp->cmnd[4];
2756 start_lba_lo = ((u32) scp->cmnd[1] << 16) |
2757 ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
2758
2759 start_lba_lo &= 0x1FFFFF;
2760 }
2761
2762 /*
2763 * 10-byte READ(0x28) or WRITE(0x2A) cdb
2764 */
2765 else if (scp->cmd_len == 10) {
2766 datalength = (u32) scp->cmnd[8] |
2767 ((u32) scp->cmnd[7] << 8);
2768 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
2769 ((u32) scp->cmnd[3] << 16) |
2770 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2771 }
2772
2773 /*
2774 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
2775 */
2776 else if (scp->cmd_len == 12) {
2777 datalength = ((u32) scp->cmnd[6] << 24) |
2778 ((u32) scp->cmnd[7] << 16) |
2779 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
2780 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
2781 ((u32) scp->cmnd[3] << 16) |
2782 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2783 }
2784
2785 /*
2786 * 16-byte READ(0x88) or WRITE(0x8A) cdb
2787 */
2788 else if (scp->cmd_len == 16) {
2789 datalength = ((u32) scp->cmnd[10] << 24) |
2790 ((u32) scp->cmnd[11] << 16) |
2791 ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
2792 start_lba_lo = ((u32) scp->cmnd[6] << 24) |
2793 ((u32) scp->cmnd[7] << 16) |
2794 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
2795
2796 start_lba_hi = ((u32) scp->cmnd[2] << 24) |
2797 ((u32) scp->cmnd[3] << 16) |
2798 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2799 }
2800
2801 memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO));
2802 io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo;
2803 io_info.numBlocks = datalength;
2804 io_info.ldTgtId = device_id;
2805 io_info.r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
2806 scsi_buff_len = scsi_bufflen(scp);
2807 io_request->DataLength = cpu_to_le32(scsi_buff_len);
2808 io_info.data_arms = 1;
2809
2810 if (scp->sc_data_direction == DMA_FROM_DEVICE)
2811 io_info.isRead = 1;
2812
2813 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
2814 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
2815
2816 if (ld < instance->fw_supported_vd_count)
2817 raid = MR_LdRaidGet(ld, local_map_ptr);
2818
2819 if (!raid || (!fusion->fast_path_io)) {
2820 rctx->reg_lock_flags = 0;
2821 fp_possible = false;
2822 } else {
2823 if (MR_BuildRaidContext(instance, &io_info, rctx,
2824 local_map_ptr, &raidLUN))
2825 fp_possible = (io_info.fpOkForIo > 0) ? true : false;
2826 }
2827
2828 if ((instance->perf_mode == MR_BALANCED_PERF_MODE) &&
2829 atomic_read(&scp->device->device_busy) >
2830 (io_info.data_arms * MR_DEVICE_HIGH_IOPS_DEPTH))
2831 cmd->request_desc->SCSIIO.MSIxIndex =
2832 mega_mod64((atomic64_add_return(1, &instance->high_iops_outstanding) /
2833 MR_HIGH_IOPS_BATCH_COUNT), instance->low_latency_index_start);
2834 else if (instance->msix_load_balance)
2835 cmd->request_desc->SCSIIO.MSIxIndex =
2836 (mega_mod64(atomic64_add_return(1, &instance->total_io_count),
2837 instance->msix_vectors));
2838 else
2839 cmd->request_desc->SCSIIO.MSIxIndex =
2840 instance->reply_map[raw_smp_processor_id()];
2841
2842 if (instance->adapter_type >= VENTURA_SERIES) {
2843 /* FP for Optimal raid level 1.
2844 * All large RAID-1 writes (> 32 KiB, both WT and WB modes)
2845 * are built by the driver as LD I/Os.
2846 * All small RAID-1 WT writes (<= 32 KiB) are built as FP I/Os
2847 * (there is never a reason to process these as buffered writes)
2848 * All small RAID-1 WB writes (<= 32 KiB) are built as FP I/Os
2849 * with the SLD bit asserted.
2850 */
2851 if (io_info.r1_alt_dev_handle != MR_DEVHANDLE_INVALID) {
2852 mrdev_priv = scp->device->hostdata;
2853
2854 if (atomic_inc_return(&instance->fw_outstanding) >
2855 (instance->host->can_queue)) {
2856 fp_possible = false;
2857 atomic_dec(&instance->fw_outstanding);
2858 } else if (fusion->pcie_bw_limitation &&
2859 ((scsi_buff_len > MR_LARGE_IO_MIN_SIZE) ||
2860 (atomic_dec_if_positive(&mrdev_priv->r1_ldio_hint) > 0))) {
2861 fp_possible = false;
2862 atomic_dec(&instance->fw_outstanding);
2863 if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE)
2864 atomic_set(&mrdev_priv->r1_ldio_hint,
2865 instance->r1_ldio_hint_default);
2866 }
2867 }
2868
2869 if (!fp_possible ||
2870 (io_info.isRead && io_info.ra_capable)) {
2871 spin_lock_irqsave(&instance->stream_lock,
2872 spinlock_flags);
2873 megasas_stream_detect(instance, cmd, &io_info);
2874 spin_unlock_irqrestore(&instance->stream_lock,
2875 spinlock_flags);
2876 /* In ventura if stream detected for a read and it is
2877 * read ahead capable make this IO as LDIO
2878 */
2879 if (is_stream_detected(rctx_g35))
2880 fp_possible = false;
2881 }
2882
2883 /* If raid is NULL, set CPU affinity to default CPU0 */
2884 if (raid)
2885 megasas_set_raidflag_cpu_affinity(fusion, &io_request->RaidContext,
2886 raid, fp_possible, io_info.isRead,
2887 scsi_buff_len);
2888 else
2889 rctx_g35->routing_flags |=
2890 (MR_RAID_CTX_CPUSEL_0 << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT);
2891 }
2892
2893 if (fp_possible) {
2894 megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp,
2895 local_map_ptr, start_lba_lo);
2896 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
2897 cmd->request_desc->SCSIIO.RequestFlags =
2898 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO
2899 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2900 if (instance->adapter_type == INVADER_SERIES) {
2901 rctx->type = MPI2_TYPE_CUDA;
2902 rctx->nseg = 0x1;
2903 io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
2904 rctx->reg_lock_flags |=
2905 (MR_RL_FLAGS_GRANT_DESTINATION_CUDA |
2906 MR_RL_FLAGS_SEQ_NUM_ENABLE);
2907 } else if (instance->adapter_type >= VENTURA_SERIES) {
2908 rctx_g35->nseg_type |= (1 << RAID_CONTEXT_NSEG_SHIFT);
2909 rctx_g35->nseg_type |= (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
2910 rctx_g35->routing_flags |= (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
2911 io_request->IoFlags |=
2912 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
2913 }
2914 if (fusion->load_balance_info &&
2915 (fusion->load_balance_info[device_id].loadBalanceFlag) &&
2916 (io_info.isRead)) {
2917 io_info.devHandle =
2918 get_updated_dev_handle(instance,
2919 &fusion->load_balance_info[device_id],
2920 &io_info, local_map_ptr);
2921 scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG;
2922 cmd->pd_r1_lb = io_info.pd_after_lb;
2923 if (instance->adapter_type >= VENTURA_SERIES)
2924 rctx_g35->span_arm = io_info.span_arm;
2925 else
2926 rctx->span_arm = io_info.span_arm;
2927
2928 } else
2929 scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
2930
2931 if (instance->adapter_type >= VENTURA_SERIES)
2932 cmd->r1_alt_dev_handle = io_info.r1_alt_dev_handle;
2933 else
2934 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
2935
2936 if ((raidLUN[0] == 1) &&
2937 (local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].validHandles > 1)) {
2938 instance->dev_handle = !(instance->dev_handle);
2939 io_info.devHandle =
2940 local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].devHandle[instance->dev_handle];
2941 }
2942
2943 cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle;
2944 io_request->DevHandle = io_info.devHandle;
2945 cmd->pd_interface = io_info.pd_interface;
2946 /* populate the LUN field */
2947 memcpy(io_request->LUN, raidLUN, 8);
2948 } else {
2949 rctx->timeout_value =
2950 cpu_to_le16(local_map_ptr->raidMap.fpPdIoTimeoutSec);
2951 cmd->request_desc->SCSIIO.RequestFlags =
2952 (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO
2953 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2954 if (instance->adapter_type == INVADER_SERIES) {
2955 if (io_info.do_fp_rlbypass ||
2956 (rctx->reg_lock_flags == REGION_TYPE_UNUSED))
2957 cmd->request_desc->SCSIIO.RequestFlags =
2958 (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
2959 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2960 rctx->type = MPI2_TYPE_CUDA;
2961 rctx->reg_lock_flags |=
2962 (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 |
2963 MR_RL_FLAGS_SEQ_NUM_ENABLE);
2964 rctx->nseg = 0x1;
2965 } else if (instance->adapter_type >= VENTURA_SERIES) {
2966 rctx_g35->routing_flags |= (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
2967 rctx_g35->nseg_type |= (1 << RAID_CONTEXT_NSEG_SHIFT);
2968 rctx_g35->nseg_type |= (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
2969 }
2970 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
2971 io_request->DevHandle = cpu_to_le16(device_id);
2972
2973 } /* Not FP */
2974 }
2975
2976 /**
2977 * megasas_build_ld_nonrw_fusion - prepares non rw ios for virtual disk
2978 * @instance: Adapter soft state
2979 * @scp: SCSI command
2980 * @cmd: Command to be prepared
2981 *
2982 * Prepares the io_request frame for non-rw io cmds for vd.
2983 */
2984 static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance,
2985 struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd)
2986 {
2987 u32 device_id;
2988 struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
2989 u16 ld;
2990 struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
2991 struct fusion_context *fusion = instance->ctrl_context;
2992 u8 span, physArm;
2993 __le16 devHandle;
2994 u32 arRef, pd;
2995 struct MR_LD_RAID *raid;
2996 struct RAID_CONTEXT *pRAID_Context;
2997 u8 fp_possible = 1;
2998
2999 io_request = cmd->io_request;
3000 device_id = MEGASAS_DEV_INDEX(scmd);
3001 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
3002 io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
3003 /* get RAID_Context pointer */
3004 pRAID_Context = &io_request->RaidContext.raid_context;
3005 /* Check with FW team */
3006 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
3007 pRAID_Context->reg_lock_row_lba = 0;
3008 pRAID_Context->reg_lock_length = 0;
3009
3010 if (fusion->fast_path_io && (
3011 device_id < instance->fw_supported_vd_count)) {
3012
3013 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
3014 if (ld >= instance->fw_supported_vd_count - 1)
3015 fp_possible = 0;
3016 else {
3017 raid = MR_LdRaidGet(ld, local_map_ptr);
3018 if (!(raid->capability.fpNonRWCapable))
3019 fp_possible = 0;
3020 }
3021 } else
3022 fp_possible = 0;
3023
3024 if (!fp_possible) {
3025 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
3026 io_request->DevHandle = cpu_to_le16(device_id);
3027 io_request->LUN[1] = scmd->device->lun;
3028 pRAID_Context->timeout_value =
3029 cpu_to_le16 (scmd->request->timeout / HZ);
3030 cmd->request_desc->SCSIIO.RequestFlags =
3031 (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
3032 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3033 } else {
3034
3035 /* set RAID context values */
3036 pRAID_Context->config_seq_num = raid->seqNum;
3037 if (instance->adapter_type < VENTURA_SERIES)
3038 pRAID_Context->reg_lock_flags = REGION_TYPE_SHARED_READ;
3039 pRAID_Context->timeout_value =
3040 cpu_to_le16(raid->fpIoTimeoutForLd);
3041
3042 /* get the DevHandle for the PD (since this is
3043 fpNonRWCapable, this is a single disk RAID0) */
3044 span = physArm = 0;
3045 arRef = MR_LdSpanArrayGet(ld, span, local_map_ptr);
3046 pd = MR_ArPdGet(arRef, physArm, local_map_ptr);
3047 devHandle = MR_PdDevHandleGet(pd, local_map_ptr);
3048
3049 /* build request descriptor */
3050 cmd->request_desc->SCSIIO.RequestFlags =
3051 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
3052 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3053 cmd->request_desc->SCSIIO.DevHandle = devHandle;
3054
3055 /* populate the LUN field */
3056 memcpy(io_request->LUN, raid->LUN, 8);
3057
3058 /* build the raidScsiIO structure */
3059 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
3060 io_request->DevHandle = devHandle;
3061 }
3062 }
3063
3064 /**
3065 * megasas_build_syspd_fusion - prepares rw/non-rw ios for syspd
3066 * @instance: Adapter soft state
3067 * @scp: SCSI command
3068 * @cmd: Command to be prepared
3069 * @fp_possible: parameter to detect fast path or firmware path io.
3070 *
3071 * Prepares the io_request frame for rw/non-rw io cmds for syspds
3072 */
3073 static void
3074 megasas_build_syspd_fusion(struct megasas_instance *instance,
3075 struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd,
3076 bool fp_possible)
3077 {
3078 u32 device_id;
3079 struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
3080 u16 pd_index = 0;
3081 u16 os_timeout_value;
3082 u16 timeout_limit;
3083 struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
3084 struct RAID_CONTEXT *pRAID_Context;
3085 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
3086 struct MR_PRIV_DEVICE *mr_device_priv_data;
3087 struct fusion_context *fusion = instance->ctrl_context;
3088 pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id - 1) & 1];
3089
3090 device_id = MEGASAS_DEV_INDEX(scmd);
3091 pd_index = MEGASAS_PD_INDEX(scmd);
3092 os_timeout_value = scmd->request->timeout / HZ;
3093 mr_device_priv_data = scmd->device->hostdata;
3094 cmd->pd_interface = mr_device_priv_data->interface_type;
3095
3096 io_request = cmd->io_request;
3097 /* get RAID_Context pointer */
3098 pRAID_Context = &io_request->RaidContext.raid_context;
3099 pRAID_Context->reg_lock_flags = 0;
3100 pRAID_Context->reg_lock_row_lba = 0;
3101 pRAID_Context->reg_lock_length = 0;
3102 io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
3103 io_request->LUN[1] = scmd->device->lun;
3104 pRAID_Context->raid_flags = MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD
3105 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT;
3106
3107 /* If FW supports PD sequence number */
3108 if (instance->support_seqnum_jbod_fp) {
3109 if (instance->use_seqnum_jbod_fp &&
3110 instance->pd_list[pd_index].driveType == TYPE_DISK) {
3111
3112 /* More than 256 PD/JBOD support for Ventura */
3113 if (instance->support_morethan256jbod)
3114 pRAID_Context->virtual_disk_tgt_id =
3115 pd_sync->seq[pd_index].pd_target_id;
3116 else
3117 pRAID_Context->virtual_disk_tgt_id =
3118 cpu_to_le16(device_id +
3119 (MAX_PHYSICAL_DEVICES - 1));
3120 pRAID_Context->config_seq_num =
3121 pd_sync->seq[pd_index].seqNum;
3122 io_request->DevHandle =
3123 pd_sync->seq[pd_index].devHandle;
3124 if (instance->adapter_type >= VENTURA_SERIES) {
3125 io_request->RaidContext.raid_context_g35.routing_flags |=
3126 (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
3127 io_request->RaidContext.raid_context_g35.nseg_type |=
3128 (1 << RAID_CONTEXT_NSEG_SHIFT);
3129 io_request->RaidContext.raid_context_g35.nseg_type |=
3130 (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
3131 } else {
3132 pRAID_Context->type = MPI2_TYPE_CUDA;
3133 pRAID_Context->nseg = 0x1;
3134 pRAID_Context->reg_lock_flags |=
3135 (MR_RL_FLAGS_SEQ_NUM_ENABLE |
3136 MR_RL_FLAGS_GRANT_DESTINATION_CUDA);
3137 }
3138 } else {
3139 pRAID_Context->virtual_disk_tgt_id =
3140 cpu_to_le16(device_id +
3141 (MAX_PHYSICAL_DEVICES - 1));
3142 pRAID_Context->config_seq_num = 0;
3143 io_request->DevHandle = cpu_to_le16(0xFFFF);
3144 }
3145 } else {
3146 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
3147 pRAID_Context->config_seq_num = 0;
3148
3149 if (fusion->fast_path_io) {
3150 local_map_ptr =
3151 fusion->ld_drv_map[(instance->map_id & 1)];
3152 io_request->DevHandle =
3153 local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
3154 } else {
3155 io_request->DevHandle = cpu_to_le16(0xFFFF);
3156 }
3157 }
3158
3159 cmd->request_desc->SCSIIO.DevHandle = io_request->DevHandle;
3160
3161 if ((instance->perf_mode == MR_BALANCED_PERF_MODE) &&
3162 atomic_read(&scmd->device->device_busy) > MR_DEVICE_HIGH_IOPS_DEPTH)
3163 cmd->request_desc->SCSIIO.MSIxIndex =
3164 mega_mod64((atomic64_add_return(1, &instance->high_iops_outstanding) /
3165 MR_HIGH_IOPS_BATCH_COUNT), instance->low_latency_index_start);
3166 else if (instance->msix_load_balance)
3167 cmd->request_desc->SCSIIO.MSIxIndex =
3168 (mega_mod64(atomic64_add_return(1, &instance->total_io_count),
3169 instance->msix_vectors));
3170 else
3171 cmd->request_desc->SCSIIO.MSIxIndex =
3172 instance->reply_map[raw_smp_processor_id()];
3173
3174 if (!fp_possible) {
3175 /* system pd firmware path */
3176 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
3177 cmd->request_desc->SCSIIO.RequestFlags =
3178 (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
3179 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3180 pRAID_Context->timeout_value = cpu_to_le16(os_timeout_value);
3181 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
3182 } else {
3183 if (os_timeout_value)
3184 os_timeout_value++;
3185
3186 /* system pd Fast Path */
3187 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
3188 timeout_limit = (scmd->device->type == TYPE_DISK) ?
3189 255 : 0xFFFF;
3190 pRAID_Context->timeout_value =
3191 cpu_to_le16((os_timeout_value > timeout_limit) ?
3192 timeout_limit : os_timeout_value);
3193 if (instance->adapter_type >= INVADER_SERIES)
3194 io_request->IoFlags |=
3195 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
3196
3197 cmd->request_desc->SCSIIO.RequestFlags =
3198 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
3199 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3200 }
3201 }
3202
3203 /**
3204 * megasas_build_io_fusion - Prepares IOs to devices
3205 * @instance: Adapter soft state
3206 * @scp: SCSI command
3207 * @cmd: Command to be prepared
3208 *
3209 * Invokes helper functions to prepare request frames
3210 * and sets flags appropriate for IO/Non-IO cmd
3211 */
3212 static int
3213 megasas_build_io_fusion(struct megasas_instance *instance,
3214 struct scsi_cmnd *scp,
3215 struct megasas_cmd_fusion *cmd)
3216 {
3217 int sge_count;
3218 u8 cmd_type;
3219 struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request;
3220 struct MR_PRIV_DEVICE *mr_device_priv_data;
3221 mr_device_priv_data = scp->device->hostdata;
3222
3223 /* Zero out some fields so they don't get reused */
3224 memset(io_request->LUN, 0x0, 8);
3225 io_request->CDB.EEDP32.PrimaryReferenceTag = 0;
3226 io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0;
3227 io_request->EEDPFlags = 0;
3228 io_request->Control = 0;
3229 io_request->EEDPBlockSize = 0;
3230 io_request->ChainOffset = 0;
3231 io_request->RaidContext.raid_context.raid_flags = 0;
3232 io_request->RaidContext.raid_context.type = 0;
3233 io_request->RaidContext.raid_context.nseg = 0;
3234
3235 memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len);
3236 /*
3237 * Just the CDB length,rest of the Flags are zero
3238 * This will be modified for FP in build_ldio_fusion
3239 */
3240 io_request->IoFlags = cpu_to_le16(scp->cmd_len);
3241
3242 switch (cmd_type = megasas_cmd_type(scp)) {
3243 case READ_WRITE_LDIO:
3244 megasas_build_ldio_fusion(instance, scp, cmd);
3245 break;
3246 case NON_READ_WRITE_LDIO:
3247 megasas_build_ld_nonrw_fusion(instance, scp, cmd);
3248 break;
3249 case READ_WRITE_SYSPDIO:
3250 megasas_build_syspd_fusion(instance, scp, cmd, true);
3251 break;
3252 case NON_READ_WRITE_SYSPDIO:
3253 if (instance->secure_jbod_support ||
3254 mr_device_priv_data->is_tm_capable)
3255 megasas_build_syspd_fusion(instance, scp, cmd, false);
3256 else
3257 megasas_build_syspd_fusion(instance, scp, cmd, true);
3258 break;
3259 default:
3260 break;
3261 }
3262
3263 /*
3264 * Construct SGL
3265 */
3266
3267 sge_count = megasas_make_sgl(instance, scp, cmd);
3268
3269 if (sge_count > instance->max_num_sge || (sge_count < 0)) {
3270 dev_err(&instance->pdev->dev,
3271 "%s %d sge_count (%d) is out of range. Range is: 0-%d\n",
3272 __func__, __LINE__, sge_count, instance->max_num_sge);
3273 return 1;
3274 }
3275
3276 if (instance->adapter_type >= VENTURA_SERIES) {
3277 set_num_sge(&io_request->RaidContext.raid_context_g35, sge_count);
3278 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.routing_flags);
3279 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.nseg_type);
3280 } else {
3281 /* numSGE store lower 8 bit of sge_count.
3282 * numSGEExt store higher 8 bit of sge_count
3283 */
3284 io_request->RaidContext.raid_context.num_sge = sge_count;
3285 io_request->RaidContext.raid_context.num_sge_ext =
3286 (u8)(sge_count >> 8);
3287 }
3288
3289 io_request->SGLFlags = cpu_to_le16(MPI2_SGE_FLAGS_64_BIT_ADDRESSING);
3290
3291 if (scp->sc_data_direction == DMA_TO_DEVICE)
3292 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_WRITE);
3293 else if (scp->sc_data_direction == DMA_FROM_DEVICE)
3294 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_READ);
3295
3296 io_request->SGLOffset0 =
3297 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4;
3298
3299 io_request->SenseBufferLowAddress =
3300 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
3301 io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
3302
3303 cmd->scmd = scp;
3304 scp->SCp.ptr = (char *)cmd;
3305
3306 return 0;
3307 }
3308
3309 static union MEGASAS_REQUEST_DESCRIPTOR_UNION *
3310 megasas_get_request_descriptor(struct megasas_instance *instance, u16 index)
3311 {
3312 u8 *p;
3313 struct fusion_context *fusion;
3314
3315 fusion = instance->ctrl_context;
3316 p = fusion->req_frames_desc +
3317 sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) * index;
3318
3319 return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p;
3320 }
3321
3322
3323 /* megasas_prepate_secondRaid1_IO
3324 * It prepares the raid 1 second IO
3325 */
3326 static void megasas_prepare_secondRaid1_IO(struct megasas_instance *instance,
3327 struct megasas_cmd_fusion *cmd,
3328 struct megasas_cmd_fusion *r1_cmd)
3329 {
3330 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc, *req_desc2 = NULL;
3331 struct fusion_context *fusion;
3332 fusion = instance->ctrl_context;
3333 req_desc = cmd->request_desc;
3334 /* copy the io request frame as well as 8 SGEs data for r1 command*/
3335 memcpy(r1_cmd->io_request, cmd->io_request,
3336 (sizeof(struct MPI2_RAID_SCSI_IO_REQUEST)));
3337 memcpy(&r1_cmd->io_request->SGL, &cmd->io_request->SGL,
3338 (fusion->max_sge_in_main_msg * sizeof(union MPI2_SGE_IO_UNION)));
3339 /*sense buffer is different for r1 command*/
3340 r1_cmd->io_request->SenseBufferLowAddress =
3341 cpu_to_le32(lower_32_bits(r1_cmd->sense_phys_addr));
3342 r1_cmd->scmd = cmd->scmd;
3343 req_desc2 = megasas_get_request_descriptor(instance,
3344 (r1_cmd->index - 1));
3345 req_desc2->Words = 0;
3346 r1_cmd->request_desc = req_desc2;
3347 req_desc2->SCSIIO.SMID = cpu_to_le16(r1_cmd->index);
3348 req_desc2->SCSIIO.RequestFlags = req_desc->SCSIIO.RequestFlags;
3349 r1_cmd->request_desc->SCSIIO.DevHandle = cmd->r1_alt_dev_handle;
3350 r1_cmd->io_request->DevHandle = cmd->r1_alt_dev_handle;
3351 r1_cmd->r1_alt_dev_handle = cmd->io_request->DevHandle;
3352 cmd->io_request->RaidContext.raid_context_g35.flow_specific.peer_smid =
3353 cpu_to_le16(r1_cmd->index);
3354 r1_cmd->io_request->RaidContext.raid_context_g35.flow_specific.peer_smid =
3355 cpu_to_le16(cmd->index);
3356 /*MSIxIndex of both commands request descriptors should be same*/
3357 r1_cmd->request_desc->SCSIIO.MSIxIndex =
3358 cmd->request_desc->SCSIIO.MSIxIndex;
3359 /*span arm is different for r1 cmd*/
3360 r1_cmd->io_request->RaidContext.raid_context_g35.span_arm =
3361 cmd->io_request->RaidContext.raid_context_g35.span_arm + 1;
3362 }
3363
3364 /**
3365 * megasas_build_and_issue_cmd_fusion -Main routine for building and
3366 * issuing non IOCTL cmd
3367 * @instance: Adapter soft state
3368 * @scmd: pointer to scsi cmd from OS
3369 */
3370 static u32
3371 megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance,
3372 struct scsi_cmnd *scmd)
3373 {
3374 struct megasas_cmd_fusion *cmd, *r1_cmd = NULL;
3375 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3376 u32 index;
3377
3378 if ((megasas_cmd_type(scmd) == READ_WRITE_LDIO) &&
3379 instance->ldio_threshold &&
3380 (atomic_inc_return(&instance->ldio_outstanding) >
3381 instance->ldio_threshold)) {
3382 atomic_dec(&instance->ldio_outstanding);
3383 return SCSI_MLQUEUE_DEVICE_BUSY;
3384 }
3385
3386 if (atomic_inc_return(&instance->fw_outstanding) >
3387 instance->host->can_queue) {
3388 atomic_dec(&instance->fw_outstanding);
3389 return SCSI_MLQUEUE_HOST_BUSY;
3390 }
3391
3392 cmd = megasas_get_cmd_fusion(instance, scmd->request->tag);
3393
3394 if (!cmd) {
3395 atomic_dec(&instance->fw_outstanding);
3396 return SCSI_MLQUEUE_HOST_BUSY;
3397 }
3398
3399 index = cmd->index;
3400
3401 req_desc = megasas_get_request_descriptor(instance, index-1);
3402
3403 req_desc->Words = 0;
3404 cmd->request_desc = req_desc;
3405
3406 if (megasas_build_io_fusion(instance, scmd, cmd)) {
3407 megasas_return_cmd_fusion(instance, cmd);
3408 dev_err(&instance->pdev->dev, "Error building command\n");
3409 cmd->request_desc = NULL;
3410 atomic_dec(&instance->fw_outstanding);
3411 return SCSI_MLQUEUE_HOST_BUSY;
3412 }
3413
3414 req_desc = cmd->request_desc;
3415 req_desc->SCSIIO.SMID = cpu_to_le16(index);
3416
3417 if (cmd->io_request->ChainOffset != 0 &&
3418 cmd->io_request->ChainOffset != 0xF)
3419 dev_err(&instance->pdev->dev, "The chain offset value is not "
3420 "correct : %x\n", cmd->io_request->ChainOffset);
3421 /*
3422 * if it is raid 1/10 fp write capable.
3423 * try to get second command from pool and construct it.
3424 * From FW, it has confirmed that lba values of two PDs
3425 * corresponds to single R1/10 LD are always same
3426 *
3427 */
3428 /* driver side count always should be less than max_fw_cmds
3429 * to get new command
3430 */
3431 if (cmd->r1_alt_dev_handle != MR_DEVHANDLE_INVALID) {
3432 r1_cmd = megasas_get_cmd_fusion(instance,
3433 (scmd->request->tag + instance->max_fw_cmds));
3434 megasas_prepare_secondRaid1_IO(instance, cmd, r1_cmd);
3435 }
3436
3437
3438 /*
3439 * Issue the command to the FW
3440 */
3441
3442 megasas_fire_cmd_fusion(instance, req_desc);
3443
3444 if (r1_cmd)
3445 megasas_fire_cmd_fusion(instance, r1_cmd->request_desc);
3446
3447
3448 return 0;
3449 }
3450
3451 /**
3452 * megasas_complete_r1_command -
3453 * completes R1 FP write commands which has valid peer smid
3454 * @instance: Adapter soft state
3455 * @cmd_fusion: MPT command frame
3456 *
3457 */
3458 static inline void
3459 megasas_complete_r1_command(struct megasas_instance *instance,
3460 struct megasas_cmd_fusion *cmd)
3461 {
3462 u8 *sense, status, ex_status;
3463 u32 data_length;
3464 u16 peer_smid;
3465 struct fusion_context *fusion;
3466 struct megasas_cmd_fusion *r1_cmd = NULL;
3467 struct scsi_cmnd *scmd_local = NULL;
3468 struct RAID_CONTEXT_G35 *rctx_g35;
3469
3470 rctx_g35 = &cmd->io_request->RaidContext.raid_context_g35;
3471 fusion = instance->ctrl_context;
3472 peer_smid = le16_to_cpu(rctx_g35->flow_specific.peer_smid);
3473
3474 r1_cmd = fusion->cmd_list[peer_smid - 1];
3475 scmd_local = cmd->scmd;
3476 status = rctx_g35->status;
3477 ex_status = rctx_g35->ex_status;
3478 data_length = cmd->io_request->DataLength;
3479 sense = cmd->sense;
3480
3481 cmd->cmd_completed = true;
3482
3483 /* Check if peer command is completed or not*/
3484 if (r1_cmd->cmd_completed) {
3485 rctx_g35 = &r1_cmd->io_request->RaidContext.raid_context_g35;
3486 if (rctx_g35->status != MFI_STAT_OK) {
3487 status = rctx_g35->status;
3488 ex_status = rctx_g35->ex_status;
3489 data_length = r1_cmd->io_request->DataLength;
3490 sense = r1_cmd->sense;
3491 }
3492
3493 megasas_return_cmd_fusion(instance, r1_cmd);
3494 map_cmd_status(fusion, scmd_local, status, ex_status,
3495 le32_to_cpu(data_length), sense);
3496 if (instance->ldio_threshold &&
3497 megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)
3498 atomic_dec(&instance->ldio_outstanding);
3499 scmd_local->SCp.ptr = NULL;
3500 megasas_return_cmd_fusion(instance, cmd);
3501 scsi_dma_unmap(scmd_local);
3502 scmd_local->scsi_done(scmd_local);
3503 }
3504 }
3505
3506 /**
3507 * complete_cmd_fusion - Completes command
3508 * @instance: Adapter soft state
3509 * Completes all commands that is in reply descriptor queue
3510 */
3511 static int
3512 complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex,
3513 struct megasas_irq_context *irq_context)
3514 {
3515 union MPI2_REPLY_DESCRIPTORS_UNION *desc;
3516 struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc;
3517 struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req;
3518 struct fusion_context *fusion;
3519 struct megasas_cmd *cmd_mfi;
3520 struct megasas_cmd_fusion *cmd_fusion;
3521 u16 smid, num_completed;
3522 u8 reply_descript_type, *sense, status, extStatus;
3523 u32 device_id, data_length;
3524 union desc_value d_val;
3525 struct LD_LOAD_BALANCE_INFO *lbinfo;
3526 int threshold_reply_count = 0;
3527 struct scsi_cmnd *scmd_local = NULL;
3528 struct MR_TASK_MANAGE_REQUEST *mr_tm_req;
3529 struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_tm_req;
3530
3531 fusion = instance->ctrl_context;
3532
3533 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
3534 return IRQ_HANDLED;
3535
3536 desc = fusion->reply_frames_desc[MSIxIndex] +
3537 fusion->last_reply_idx[MSIxIndex];
3538
3539 reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
3540
3541 d_val.word = desc->Words;
3542
3543 reply_descript_type = reply_desc->ReplyFlags &
3544 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
3545
3546 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
3547 return IRQ_NONE;
3548
3549 num_completed = 0;
3550
3551 while (d_val.u.low != cpu_to_le32(UINT_MAX) &&
3552 d_val.u.high != cpu_to_le32(UINT_MAX)) {
3553
3554 smid = le16_to_cpu(reply_desc->SMID);
3555 cmd_fusion = fusion->cmd_list[smid - 1];
3556 scsi_io_req = (struct MPI2_RAID_SCSI_IO_REQUEST *)
3557 cmd_fusion->io_request;
3558
3559 scmd_local = cmd_fusion->scmd;
3560 status = scsi_io_req->RaidContext.raid_context.status;
3561 extStatus = scsi_io_req->RaidContext.raid_context.ex_status;
3562 sense = cmd_fusion->sense;
3563 data_length = scsi_io_req->DataLength;
3564
3565 switch (scsi_io_req->Function) {
3566 case MPI2_FUNCTION_SCSI_TASK_MGMT:
3567 mr_tm_req = (struct MR_TASK_MANAGE_REQUEST *)
3568 cmd_fusion->io_request;
3569 mpi_tm_req = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *)
3570 &mr_tm_req->TmRequest;
3571 dev_dbg(&instance->pdev->dev, "TM completion:"
3572 "type: 0x%x TaskMID: 0x%x\n",
3573 mpi_tm_req->TaskType, mpi_tm_req->TaskMID);
3574 complete(&cmd_fusion->done);
3575 break;
3576 case MPI2_FUNCTION_SCSI_IO_REQUEST: /*Fast Path IO.*/
3577 /* Update load balancing info */
3578 if (fusion->load_balance_info &&
3579 (cmd_fusion->scmd->SCp.Status &
3580 MEGASAS_LOAD_BALANCE_FLAG)) {
3581 device_id = MEGASAS_DEV_INDEX(scmd_local);
3582 lbinfo = &fusion->load_balance_info[device_id];
3583 atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]);
3584 cmd_fusion->scmd->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
3585 }
3586 /* Fall through - and complete IO */
3587 case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */
3588 atomic_dec(&instance->fw_outstanding);
3589 if (cmd_fusion->r1_alt_dev_handle == MR_DEVHANDLE_INVALID) {
3590 map_cmd_status(fusion, scmd_local, status,
3591 extStatus, le32_to_cpu(data_length),
3592 sense);
3593 if (instance->ldio_threshold &&
3594 (megasas_cmd_type(scmd_local) == READ_WRITE_LDIO))
3595 atomic_dec(&instance->ldio_outstanding);
3596 scmd_local->SCp.ptr = NULL;
3597 megasas_return_cmd_fusion(instance, cmd_fusion);
3598 scsi_dma_unmap(scmd_local);
3599 scmd_local->scsi_done(scmd_local);
3600 } else /* Optimal VD - R1 FP command completion. */
3601 megasas_complete_r1_command(instance, cmd_fusion);
3602 break;
3603 case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */
3604 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
3605 /* Poll mode. Dummy free.
3606 * In case of Interrupt mode, caller has reverse check.
3607 */
3608 if (cmd_mfi->flags & DRV_DCMD_POLLED_MODE) {
3609 cmd_mfi->flags &= ~DRV_DCMD_POLLED_MODE;
3610 megasas_return_cmd(instance, cmd_mfi);
3611 } else
3612 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
3613 break;
3614 }
3615
3616 fusion->last_reply_idx[MSIxIndex]++;
3617 if (fusion->last_reply_idx[MSIxIndex] >=
3618 fusion->reply_q_depth)
3619 fusion->last_reply_idx[MSIxIndex] = 0;
3620
3621 desc->Words = cpu_to_le64(ULLONG_MAX);
3622 num_completed++;
3623 threshold_reply_count++;
3624
3625 /* Get the next reply descriptor */
3626 if (!fusion->last_reply_idx[MSIxIndex])
3627 desc = fusion->reply_frames_desc[MSIxIndex];
3628 else
3629 desc++;
3630
3631 reply_desc =
3632 (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
3633
3634 d_val.word = desc->Words;
3635
3636 reply_descript_type = reply_desc->ReplyFlags &
3637 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
3638
3639 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
3640 break;
3641 /*
3642 * Write to reply post host index register after completing threshold
3643 * number of reply counts and still there are more replies in reply queue
3644 * pending to be completed
3645 */
3646 if (threshold_reply_count >= instance->threshold_reply_count) {
3647 if (instance->msix_combined)
3648 writel(((MSIxIndex & 0x7) << 24) |
3649 fusion->last_reply_idx[MSIxIndex],
3650 instance->reply_post_host_index_addr[MSIxIndex/8]);
3651 else
3652 writel((MSIxIndex << 24) |
3653 fusion->last_reply_idx[MSIxIndex],
3654 instance->reply_post_host_index_addr[0]);
3655 threshold_reply_count = 0;
3656 if (irq_context) {
3657 if (!irq_context->irq_poll_scheduled) {
3658 irq_context->irq_poll_scheduled = true;
3659 irq_context->irq_line_enable = true;
3660 irq_poll_sched(&irq_context->irqpoll);
3661 }
3662 return num_completed;
3663 }
3664 }
3665 }
3666
3667 if (num_completed) {
3668 wmb();
3669 if (instance->msix_combined)
3670 writel(((MSIxIndex & 0x7) << 24) |
3671 fusion->last_reply_idx[MSIxIndex],
3672 instance->reply_post_host_index_addr[MSIxIndex/8]);
3673 else
3674 writel((MSIxIndex << 24) |
3675 fusion->last_reply_idx[MSIxIndex],
3676 instance->reply_post_host_index_addr[0]);
3677 megasas_check_and_restore_queue_depth(instance);
3678 }
3679 return num_completed;
3680 }
3681
3682 /**
3683 * megasas_enable_irq_poll() - enable irqpoll
3684 */
3685 static void megasas_enable_irq_poll(struct megasas_instance *instance)
3686 {
3687 u32 count, i;
3688 struct megasas_irq_context *irq_ctx;
3689
3690 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3691
3692 for (i = 0; i < count; i++) {
3693 irq_ctx = &instance->irq_context[i];
3694 irq_poll_enable(&irq_ctx->irqpoll);
3695 }
3696 }
3697
3698 /**
3699 * megasas_sync_irqs - Synchronizes all IRQs owned by adapter
3700 * @instance: Adapter soft state
3701 */
3702 static void megasas_sync_irqs(unsigned long instance_addr)
3703 {
3704 u32 count, i;
3705 struct megasas_instance *instance =
3706 (struct megasas_instance *)instance_addr;
3707 struct megasas_irq_context *irq_ctx;
3708
3709 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3710
3711 for (i = 0; i < count; i++) {
3712 synchronize_irq(pci_irq_vector(instance->pdev, i));
3713 irq_ctx = &instance->irq_context[i];
3714 irq_poll_disable(&irq_ctx->irqpoll);
3715 if (irq_ctx->irq_poll_scheduled) {
3716 irq_ctx->irq_poll_scheduled = false;
3717 enable_irq(irq_ctx->os_irq);
3718 }
3719 }
3720 }
3721
3722 /**
3723 * megasas_irqpoll() - process a queue for completed reply descriptors
3724 * @irqpoll: IRQ poll structure associated with queue to poll.
3725 * @budget: Threshold of reply descriptors to process per poll.
3726 *
3727 * Return: The number of entries processed.
3728 */
3729
3730 int megasas_irqpoll(struct irq_poll *irqpoll, int budget)
3731 {
3732 struct megasas_irq_context *irq_ctx;
3733 struct megasas_instance *instance;
3734 int num_entries;
3735
3736 irq_ctx = container_of(irqpoll, struct megasas_irq_context, irqpoll);
3737 instance = irq_ctx->instance;
3738
3739 if (irq_ctx->irq_line_enable) {
3740 disable_irq(irq_ctx->os_irq);
3741 irq_ctx->irq_line_enable = false;
3742 }
3743
3744 num_entries = complete_cmd_fusion(instance, irq_ctx->MSIxIndex, irq_ctx);
3745 if (num_entries < budget) {
3746 irq_poll_complete(irqpoll);
3747 irq_ctx->irq_poll_scheduled = false;
3748 enable_irq(irq_ctx->os_irq);
3749 }
3750
3751 return num_entries;
3752 }
3753
3754 /**
3755 * megasas_complete_cmd_dpc_fusion - Completes command
3756 * @instance: Adapter soft state
3757 *
3758 * Tasklet to complete cmds
3759 */
3760 static void
3761 megasas_complete_cmd_dpc_fusion(unsigned long instance_addr)
3762 {
3763 struct megasas_instance *instance =
3764 (struct megasas_instance *)instance_addr;
3765 u32 count, MSIxIndex;
3766
3767 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3768
3769 /* If we have already declared adapter dead, donot complete cmds */
3770 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
3771 return;
3772
3773 for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++)
3774 complete_cmd_fusion(instance, MSIxIndex, NULL);
3775 }
3776
3777 /**
3778 * megasas_isr_fusion - isr entry point
3779 */
3780 static irqreturn_t megasas_isr_fusion(int irq, void *devp)
3781 {
3782 struct megasas_irq_context *irq_context = devp;
3783 struct megasas_instance *instance = irq_context->instance;
3784 u32 mfiStatus;
3785
3786 if (instance->mask_interrupts)
3787 return IRQ_NONE;
3788
3789 #if defined(ENABLE_IRQ_POLL)
3790 if (irq_context->irq_poll_scheduled)
3791 return IRQ_HANDLED;
3792 #endif
3793
3794 if (!instance->msix_vectors) {
3795 mfiStatus = instance->instancet->clear_intr(instance);
3796 if (!mfiStatus)
3797 return IRQ_NONE;
3798 }
3799
3800 /* If we are resetting, bail */
3801 if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) {
3802 instance->instancet->clear_intr(instance);
3803 return IRQ_HANDLED;
3804 }
3805
3806 return complete_cmd_fusion(instance, irq_context->MSIxIndex, irq_context)
3807 ? IRQ_HANDLED : IRQ_NONE;
3808 }
3809
3810 /**
3811 * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru
3812 * @instance: Adapter soft state
3813 * mfi_cmd: megasas_cmd pointer
3814 *
3815 */
3816 static void
3817 build_mpt_mfi_pass_thru(struct megasas_instance *instance,
3818 struct megasas_cmd *mfi_cmd)
3819 {
3820 struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain;
3821 struct MPI2_RAID_SCSI_IO_REQUEST *io_req;
3822 struct megasas_cmd_fusion *cmd;
3823 struct fusion_context *fusion;
3824 struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr;
3825
3826 fusion = instance->ctrl_context;
3827
3828 cmd = megasas_get_cmd_fusion(instance,
3829 instance->max_scsi_cmds + mfi_cmd->index);
3830
3831 /* Save the smid. To be used for returning the cmd */
3832 mfi_cmd->context.smid = cmd->index;
3833
3834 /*
3835 * For cmds where the flag is set, store the flag and check
3836 * on completion. For cmds with this flag, don't call
3837 * megasas_complete_cmd
3838 */
3839
3840 if (frame_hdr->flags & cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE))
3841 mfi_cmd->flags |= DRV_DCMD_POLLED_MODE;
3842
3843 io_req = cmd->io_request;
3844
3845 if (instance->adapter_type >= INVADER_SERIES) {
3846 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end =
3847 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL;
3848 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
3849 sgl_ptr_end->Flags = 0;
3850 }
3851
3852 mpi25_ieee_chain =
3853 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain;
3854
3855 io_req->Function = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST;
3856 io_req->SGLOffset0 = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST,
3857 SGL) / 4;
3858 io_req->ChainOffset = fusion->chain_offset_mfi_pthru;
3859
3860 mpi25_ieee_chain->Address = cpu_to_le64(mfi_cmd->frame_phys_addr);
3861
3862 mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
3863 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR;
3864
3865 mpi25_ieee_chain->Length = cpu_to_le32(instance->mfi_frame_size);
3866 }
3867
3868 /**
3869 * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd
3870 * @instance: Adapter soft state
3871 * @cmd: mfi cmd to build
3872 *
3873 */
3874 static union MEGASAS_REQUEST_DESCRIPTOR_UNION *
3875 build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
3876 {
3877 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc = NULL;
3878 u16 index;
3879
3880 build_mpt_mfi_pass_thru(instance, cmd);
3881 index = cmd->context.smid;
3882
3883 req_desc = megasas_get_request_descriptor(instance, index - 1);
3884
3885 req_desc->Words = 0;
3886 req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
3887 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3888
3889 req_desc->SCSIIO.SMID = cpu_to_le16(index);
3890
3891 return req_desc;
3892 }
3893
3894 /**
3895 * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd
3896 * @instance: Adapter soft state
3897 * @cmd: mfi cmd pointer
3898 *
3899 */
3900 static void
3901 megasas_issue_dcmd_fusion(struct megasas_instance *instance,
3902 struct megasas_cmd *cmd)
3903 {
3904 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3905
3906 req_desc = build_mpt_cmd(instance, cmd);
3907
3908 megasas_fire_cmd_fusion(instance, req_desc);
3909 return;
3910 }
3911
3912 /**
3913 * megasas_release_fusion - Reverses the FW initialization
3914 * @instance: Adapter soft state
3915 */
3916 void
3917 megasas_release_fusion(struct megasas_instance *instance)
3918 {
3919 megasas_free_ioc_init_cmd(instance);
3920 megasas_free_cmds(instance);
3921 megasas_free_cmds_fusion(instance);
3922
3923 iounmap(instance->reg_set);
3924
3925 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
3926 }
3927
3928 /**
3929 * megasas_read_fw_status_reg_fusion - returns the current FW status value
3930 * @regs: MFI register set
3931 */
3932 static u32
3933 megasas_read_fw_status_reg_fusion(struct megasas_instance *instance)
3934 {
3935 return megasas_readl(instance, &instance->reg_set->outbound_scratch_pad_0);
3936 }
3937
3938 /**
3939 * megasas_alloc_host_crash_buffer - Host buffers for Crash dump collection from Firmware
3940 * @instance: Controller's soft instance
3941 * return: Number of allocated host crash buffers
3942 */
3943 static void
3944 megasas_alloc_host_crash_buffer(struct megasas_instance *instance)
3945 {
3946 unsigned int i;
3947
3948 for (i = 0; i < MAX_CRASH_DUMP_SIZE; i++) {
3949 instance->crash_buf[i] = vzalloc(CRASH_DMA_BUF_SIZE);
3950 if (!instance->crash_buf[i]) {
3951 dev_info(&instance->pdev->dev, "Firmware crash dump "
3952 "memory allocation failed at index %d\n", i);
3953 break;
3954 }
3955 }
3956 instance->drv_buf_alloc = i;
3957 }
3958
3959 /**
3960 * megasas_free_host_crash_buffer - Host buffers for Crash dump collection from Firmware
3961 * @instance: Controller's soft instance
3962 */
3963 void
3964 megasas_free_host_crash_buffer(struct megasas_instance *instance)
3965 {
3966 unsigned int i;
3967 for (i = 0; i < instance->drv_buf_alloc; i++) {
3968 if (instance->crash_buf[i])
3969 vfree(instance->crash_buf[i]);
3970 }
3971 instance->drv_buf_index = 0;
3972 instance->drv_buf_alloc = 0;
3973 instance->fw_crash_state = UNAVAILABLE;
3974 instance->fw_crash_buffer_size = 0;
3975 }
3976
3977 /**
3978 * megasas_adp_reset_fusion - For controller reset
3979 * @regs: MFI register set
3980 */
3981 static int
3982 megasas_adp_reset_fusion(struct megasas_instance *instance,
3983 struct megasas_register_set __iomem *regs)
3984 {
3985 u32 host_diag, abs_state, retry;
3986
3987 /* Now try to reset the chip */
3988 writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3989 writel(MPI2_WRSEQ_1ST_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3990 writel(MPI2_WRSEQ_2ND_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3991 writel(MPI2_WRSEQ_3RD_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3992 writel(MPI2_WRSEQ_4TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3993 writel(MPI2_WRSEQ_5TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3994 writel(MPI2_WRSEQ_6TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3995
3996 /* Check that the diag write enable (DRWE) bit is on */
3997 host_diag = megasas_readl(instance, &instance->reg_set->fusion_host_diag);
3998 retry = 0;
3999 while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) {
4000 msleep(100);
4001 host_diag = megasas_readl(instance,
4002 &instance->reg_set->fusion_host_diag);
4003 if (retry++ == 100) {
4004 dev_warn(&instance->pdev->dev,
4005 "Host diag unlock failed from %s %d\n",
4006 __func__, __LINE__);
4007 break;
4008 }
4009 }
4010 if (!(host_diag & HOST_DIAG_WRITE_ENABLE))
4011 return -1;
4012
4013 /* Send chip reset command */
4014 writel(host_diag | HOST_DIAG_RESET_ADAPTER,
4015 &instance->reg_set->fusion_host_diag);
4016 msleep(3000);
4017
4018 /* Make sure reset adapter bit is cleared */
4019 host_diag = megasas_readl(instance, &instance->reg_set->fusion_host_diag);
4020 retry = 0;
4021 while (host_diag & HOST_DIAG_RESET_ADAPTER) {
4022 msleep(100);
4023 host_diag = megasas_readl(instance,
4024 &instance->reg_set->fusion_host_diag);
4025 if (retry++ == 1000) {
4026 dev_warn(&instance->pdev->dev,
4027 "Diag reset adapter never cleared %s %d\n",
4028 __func__, __LINE__);
4029 break;
4030 }
4031 }
4032 if (host_diag & HOST_DIAG_RESET_ADAPTER)
4033 return -1;
4034
4035 abs_state = instance->instancet->read_fw_status_reg(instance)
4036 & MFI_STATE_MASK;
4037 retry = 0;
4038
4039 while ((abs_state <= MFI_STATE_FW_INIT) && (retry++ < 1000)) {
4040 msleep(100);
4041 abs_state = instance->instancet->
4042 read_fw_status_reg(instance) & MFI_STATE_MASK;
4043 }
4044 if (abs_state <= MFI_STATE_FW_INIT) {
4045 dev_warn(&instance->pdev->dev,
4046 "fw state < MFI_STATE_FW_INIT, state = 0x%x %s %d\n",
4047 abs_state, __func__, __LINE__);
4048 return -1;
4049 }
4050
4051 return 0;
4052 }
4053
4054 /**
4055 * megasas_check_reset_fusion - For controller reset check
4056 * @regs: MFI register set
4057 */
4058 static int
4059 megasas_check_reset_fusion(struct megasas_instance *instance,
4060 struct megasas_register_set __iomem *regs)
4061 {
4062 return 0;
4063 }
4064
4065 /**
4066 * megasas_trigger_snap_dump - Trigger snap dump in FW
4067 * @instance: Soft instance of adapter
4068 */
4069 static inline void megasas_trigger_snap_dump(struct megasas_instance *instance)
4070 {
4071 int j;
4072 u32 fw_state, abs_state;
4073
4074 if (!instance->disableOnlineCtrlReset) {
4075 dev_info(&instance->pdev->dev, "Trigger snap dump\n");
4076 writel(MFI_ADP_TRIGGER_SNAP_DUMP,
4077 &instance->reg_set->doorbell);
4078 readl(&instance->reg_set->doorbell);
4079 }
4080
4081 for (j = 0; j < instance->snapdump_wait_time; j++) {
4082 abs_state = instance->instancet->read_fw_status_reg(instance);
4083 fw_state = abs_state & MFI_STATE_MASK;
4084 if (fw_state == MFI_STATE_FAULT) {
4085 dev_printk(KERN_ERR, &instance->pdev->dev,
4086 "FW in FAULT state Fault code:0x%x subcode:0x%x func:%s\n",
4087 abs_state & MFI_STATE_FAULT_CODE,
4088 abs_state & MFI_STATE_FAULT_SUBCODE, __func__);
4089 return;
4090 }
4091 msleep(1000);
4092 }
4093 }
4094
4095 /* This function waits for outstanding commands on fusion to complete */
4096 static int
4097 megasas_wait_for_outstanding_fusion(struct megasas_instance *instance,
4098 int reason, int *convert)
4099 {
4100 int i, outstanding, retval = 0, hb_seconds_missed = 0;
4101 u32 fw_state, abs_state;
4102 u32 waittime_for_io_completion;
4103
4104 waittime_for_io_completion =
4105 min_t(u32, resetwaittime,
4106 (resetwaittime - instance->snapdump_wait_time));
4107
4108 if (reason == MFI_IO_TIMEOUT_OCR) {
4109 dev_info(&instance->pdev->dev,
4110 "MFI command is timed out\n");
4111 megasas_complete_cmd_dpc_fusion((unsigned long)instance);
4112 if (instance->snapdump_wait_time)
4113 megasas_trigger_snap_dump(instance);
4114 retval = 1;
4115 goto out;
4116 }
4117
4118 for (i = 0; i < waittime_for_io_completion; i++) {
4119 /* Check if firmware is in fault state */
4120 abs_state = instance->instancet->read_fw_status_reg(instance);
4121 fw_state = abs_state & MFI_STATE_MASK;
4122 if (fw_state == MFI_STATE_FAULT) {
4123 dev_printk(KERN_ERR, &instance->pdev->dev,
4124 "FW in FAULT state Fault code:0x%x subcode:0x%x func:%s\n",
4125 abs_state & MFI_STATE_FAULT_CODE,
4126 abs_state & MFI_STATE_FAULT_SUBCODE, __func__);
4127 megasas_complete_cmd_dpc_fusion((unsigned long)instance);
4128 if (instance->requestorId && reason) {
4129 dev_warn(&instance->pdev->dev, "SR-IOV Found FW in FAULT"
4130 " state while polling during"
4131 " I/O timeout handling for %d\n",
4132 instance->host->host_no);
4133 *convert = 1;
4134 }
4135
4136 retval = 1;
4137 goto out;
4138 }
4139
4140
4141 /* If SR-IOV VF mode & heartbeat timeout, don't wait */
4142 if (instance->requestorId && !reason) {
4143 retval = 1;
4144 goto out;
4145 }
4146
4147 /* If SR-IOV VF mode & I/O timeout, check for HB timeout */
4148 if (instance->requestorId && (reason == SCSIIO_TIMEOUT_OCR)) {
4149 if (instance->hb_host_mem->HB.fwCounter !=
4150 instance->hb_host_mem->HB.driverCounter) {
4151 instance->hb_host_mem->HB.driverCounter =
4152 instance->hb_host_mem->HB.fwCounter;
4153 hb_seconds_missed = 0;
4154 } else {
4155 hb_seconds_missed++;
4156 if (hb_seconds_missed ==
4157 (MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF/HZ)) {
4158 dev_warn(&instance->pdev->dev, "SR-IOV:"
4159 " Heartbeat never completed "
4160 " while polling during I/O "
4161 " timeout handling for "
4162 "scsi%d.\n",
4163 instance->host->host_no);
4164 *convert = 1;
4165 retval = 1;
4166 goto out;
4167 }
4168 }
4169 }
4170
4171 megasas_complete_cmd_dpc_fusion((unsigned long)instance);
4172 outstanding = atomic_read(&instance->fw_outstanding);
4173 if (!outstanding)
4174 goto out;
4175
4176 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
4177 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
4178 "commands to complete for scsi%d\n", i,
4179 outstanding, instance->host->host_no);
4180 }
4181 msleep(1000);
4182 }
4183
4184 if (instance->snapdump_wait_time) {
4185 megasas_trigger_snap_dump(instance);
4186 retval = 1;
4187 goto out;
4188 }
4189
4190 if (atomic_read(&instance->fw_outstanding)) {
4191 dev_err(&instance->pdev->dev, "pending commands remain after waiting, "
4192 "will reset adapter scsi%d.\n",
4193 instance->host->host_no);
4194 *convert = 1;
4195 retval = 1;
4196 }
4197
4198 out:
4199 return retval;
4200 }
4201
4202 void megasas_reset_reply_desc(struct megasas_instance *instance)
4203 {
4204 int i, j, count;
4205 struct fusion_context *fusion;
4206 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
4207
4208 fusion = instance->ctrl_context;
4209 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
4210 for (i = 0 ; i < count ; i++) {
4211 fusion->last_reply_idx[i] = 0;
4212 reply_desc = fusion->reply_frames_desc[i];
4213 for (j = 0 ; j < fusion->reply_q_depth; j++, reply_desc++)
4214 reply_desc->Words = cpu_to_le64(ULLONG_MAX);
4215 }
4216 }
4217
4218 /*
4219 * megasas_refire_mgmt_cmd : Re-fire management commands
4220 * @instance: Controller's soft instance
4221 */
4222 static void megasas_refire_mgmt_cmd(struct megasas_instance *instance)
4223 {
4224 int j;
4225 struct megasas_cmd_fusion *cmd_fusion;
4226 struct fusion_context *fusion;
4227 struct megasas_cmd *cmd_mfi;
4228 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
4229 u16 smid;
4230 bool refire_cmd = 0;
4231 u8 result;
4232 u32 opcode = 0;
4233
4234 fusion = instance->ctrl_context;
4235
4236 /* Re-fire management commands.
4237 * Do not traverse complet MPT frame pool. Start from max_scsi_cmds.
4238 */
4239 for (j = instance->max_scsi_cmds ; j < instance->max_fw_cmds; j++) {
4240 cmd_fusion = fusion->cmd_list[j];
4241 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
4242 smid = le16_to_cpu(cmd_mfi->context.smid);
4243 result = REFIRE_CMD;
4244
4245 if (!smid)
4246 continue;
4247
4248 req_desc = megasas_get_request_descriptor(instance, smid - 1);
4249
4250 switch (cmd_mfi->frame->hdr.cmd) {
4251 case MFI_CMD_DCMD:
4252 opcode = le32_to_cpu(cmd_mfi->frame->dcmd.opcode);
4253 /* Do not refire shutdown command */
4254 if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
4255 cmd_mfi->frame->dcmd.cmd_status = MFI_STAT_OK;
4256 result = COMPLETE_CMD;
4257 break;
4258 }
4259
4260 refire_cmd = ((opcode != MR_DCMD_LD_MAP_GET_INFO)) &&
4261 (opcode != MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
4262 !(cmd_mfi->flags & DRV_DCMD_SKIP_REFIRE);
4263
4264 if (!refire_cmd)
4265 result = RETURN_CMD;
4266
4267 break;
4268 case MFI_CMD_NVME:
4269 if (!instance->support_nvme_passthru) {
4270 cmd_mfi->frame->hdr.cmd_status = MFI_STAT_INVALID_CMD;
4271 result = COMPLETE_CMD;
4272 }
4273
4274 break;
4275 case MFI_CMD_TOOLBOX:
4276 if (!instance->support_pci_lane_margining) {
4277 cmd_mfi->frame->hdr.cmd_status = MFI_STAT_INVALID_CMD;
4278 result = COMPLETE_CMD;
4279 }
4280
4281 break;
4282 default:
4283 break;
4284 }
4285
4286 switch (result) {
4287 case REFIRE_CMD:
4288 megasas_fire_cmd_fusion(instance, req_desc);
4289 break;
4290 case RETURN_CMD:
4291 megasas_return_cmd(instance, cmd_mfi);
4292 break;
4293 case COMPLETE_CMD:
4294 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
4295 break;
4296 }
4297 }
4298 }
4299
4300 /*
4301 * megasas_track_scsiio : Track SCSI IOs outstanding to a SCSI device
4302 * @instance: per adapter struct
4303 * @channel: the channel assigned by the OS
4304 * @id: the id assigned by the OS
4305 *
4306 * Returns SUCCESS if no IOs pending to SCSI device, else return FAILED
4307 */
4308
4309 static int megasas_track_scsiio(struct megasas_instance *instance,
4310 int id, int channel)
4311 {
4312 int i, found = 0;
4313 struct megasas_cmd_fusion *cmd_fusion;
4314 struct fusion_context *fusion;
4315 fusion = instance->ctrl_context;
4316
4317 for (i = 0 ; i < instance->max_scsi_cmds; i++) {
4318 cmd_fusion = fusion->cmd_list[i];
4319 if (cmd_fusion->scmd &&
4320 (cmd_fusion->scmd->device->id == id &&
4321 cmd_fusion->scmd->device->channel == channel)) {
4322 dev_info(&instance->pdev->dev,
4323 "SCSI commands pending to target"
4324 "channel %d id %d \tSMID: 0x%x\n",
4325 channel, id, cmd_fusion->index);
4326 scsi_print_command(cmd_fusion->scmd);
4327 found = 1;
4328 break;
4329 }
4330 }
4331
4332 return found ? FAILED : SUCCESS;
4333 }
4334
4335 /**
4336 * megasas_tm_response_code - translation of device response code
4337 * @ioc: per adapter object
4338 * @mpi_reply: MPI reply returned by firmware
4339 *
4340 * Return nothing.
4341 */
4342 static void
4343 megasas_tm_response_code(struct megasas_instance *instance,
4344 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply)
4345 {
4346 char *desc;
4347
4348 switch (mpi_reply->ResponseCode) {
4349 case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE:
4350 desc = "task management request completed";
4351 break;
4352 case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME:
4353 desc = "invalid frame";
4354 break;
4355 case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED:
4356 desc = "task management request not supported";
4357 break;
4358 case MPI2_SCSITASKMGMT_RSP_TM_FAILED:
4359 desc = "task management request failed";
4360 break;
4361 case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED:
4362 desc = "task management request succeeded";
4363 break;
4364 case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN:
4365 desc = "invalid lun";
4366 break;
4367 case 0xA:
4368 desc = "overlapped tag attempted";
4369 break;
4370 case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC:
4371 desc = "task queued, however not sent to target";
4372 break;
4373 default:
4374 desc = "unknown";
4375 break;
4376 }
4377 dev_dbg(&instance->pdev->dev, "response_code(%01x): %s\n",
4378 mpi_reply->ResponseCode, desc);
4379 dev_dbg(&instance->pdev->dev,
4380 "TerminationCount/DevHandle/Function/TaskType/IOCStat/IOCLoginfo"
4381 " 0x%x/0x%x/0x%x/0x%x/0x%x/0x%x\n",
4382 mpi_reply->TerminationCount, mpi_reply->DevHandle,
4383 mpi_reply->Function, mpi_reply->TaskType,
4384 mpi_reply->IOCStatus, mpi_reply->IOCLogInfo);
4385 }
4386
4387 /**
4388 * megasas_issue_tm - main routine for sending tm requests
4389 * @instance: per adapter struct
4390 * @device_handle: device handle
4391 * @channel: the channel assigned by the OS
4392 * @id: the id assigned by the OS
4393 * @type: MPI2_SCSITASKMGMT_TASKTYPE__XXX (defined in megaraid_sas_fusion.c)
4394 * @smid_task: smid assigned to the task
4395 * @m_type: TM_MUTEX_ON or TM_MUTEX_OFF
4396 * Context: user
4397 *
4398 * MegaRaid use MPT interface for Task Magement request.
4399 * A generic API for sending task management requests to firmware.
4400 *
4401 * Return SUCCESS or FAILED.
4402 */
4403 static int
4404 megasas_issue_tm(struct megasas_instance *instance, u16 device_handle,
4405 uint channel, uint id, u16 smid_task, u8 type,
4406 struct MR_PRIV_DEVICE *mr_device_priv_data)
4407 {
4408 struct MR_TASK_MANAGE_REQUEST *mr_request;
4409 struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_request;
4410 unsigned long timeleft;
4411 struct megasas_cmd_fusion *cmd_fusion;
4412 struct megasas_cmd *cmd_mfi;
4413 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
4414 struct fusion_context *fusion = NULL;
4415 struct megasas_cmd_fusion *scsi_lookup;
4416 int rc;
4417 int timeout = MEGASAS_DEFAULT_TM_TIMEOUT;
4418 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply;
4419
4420 fusion = instance->ctrl_context;
4421
4422 cmd_mfi = megasas_get_cmd(instance);
4423
4424 if (!cmd_mfi) {
4425 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
4426 __func__, __LINE__);
4427 return -ENOMEM;
4428 }
4429
4430 cmd_fusion = megasas_get_cmd_fusion(instance,
4431 instance->max_scsi_cmds + cmd_mfi->index);
4432
4433 /* Save the smid. To be used for returning the cmd */
4434 cmd_mfi->context.smid = cmd_fusion->index;
4435
4436 req_desc = megasas_get_request_descriptor(instance,
4437 (cmd_fusion->index - 1));
4438
4439 cmd_fusion->request_desc = req_desc;
4440 req_desc->Words = 0;
4441
4442 mr_request = (struct MR_TASK_MANAGE_REQUEST *) cmd_fusion->io_request;
4443 memset(mr_request, 0, sizeof(struct MR_TASK_MANAGE_REQUEST));
4444 mpi_request = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) &mr_request->TmRequest;
4445 mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
4446 mpi_request->DevHandle = cpu_to_le16(device_handle);
4447 mpi_request->TaskType = type;
4448 mpi_request->TaskMID = cpu_to_le16(smid_task);
4449 mpi_request->LUN[1] = 0;
4450
4451
4452 req_desc = cmd_fusion->request_desc;
4453 req_desc->HighPriority.SMID = cpu_to_le16(cmd_fusion->index);
4454 req_desc->HighPriority.RequestFlags =
4455 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
4456 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
4457 req_desc->HighPriority.MSIxIndex = 0;
4458 req_desc->HighPriority.LMID = 0;
4459 req_desc->HighPriority.Reserved1 = 0;
4460
4461 if (channel < MEGASAS_MAX_PD_CHANNELS)
4462 mr_request->tmReqFlags.isTMForPD = 1;
4463 else
4464 mr_request->tmReqFlags.isTMForLD = 1;
4465
4466 init_completion(&cmd_fusion->done);
4467 megasas_fire_cmd_fusion(instance, req_desc);
4468
4469 switch (type) {
4470 case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
4471 timeout = mr_device_priv_data->task_abort_tmo;
4472 break;
4473 case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
4474 timeout = mr_device_priv_data->target_reset_tmo;
4475 break;
4476 }
4477
4478 timeleft = wait_for_completion_timeout(&cmd_fusion->done, timeout * HZ);
4479
4480 if (!timeleft) {
4481 dev_err(&instance->pdev->dev,
4482 "task mgmt type 0x%x timed out\n", type);
4483 cmd_mfi->flags |= DRV_DCMD_SKIP_REFIRE;
4484 mutex_unlock(&instance->reset_mutex);
4485 rc = megasas_reset_fusion(instance->host, MFI_IO_TIMEOUT_OCR);
4486 mutex_lock(&instance->reset_mutex);
4487 return rc;
4488 }
4489
4490 mpi_reply = (struct MPI2_SCSI_TASK_MANAGE_REPLY *) &mr_request->TMReply;
4491 megasas_tm_response_code(instance, mpi_reply);
4492
4493 megasas_return_cmd(instance, cmd_mfi);
4494 rc = SUCCESS;
4495 switch (type) {
4496 case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
4497 scsi_lookup = fusion->cmd_list[smid_task - 1];
4498
4499 if (scsi_lookup->scmd == NULL)
4500 break;
4501 else {
4502 instance->instancet->disable_intr(instance);
4503 megasas_sync_irqs((unsigned long)instance);
4504 instance->instancet->enable_intr(instance);
4505 megasas_enable_irq_poll(instance);
4506 if (scsi_lookup->scmd == NULL)
4507 break;
4508 }
4509 rc = FAILED;
4510 break;
4511
4512 case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
4513 if ((channel == 0xFFFFFFFF) && (id == 0xFFFFFFFF))
4514 break;
4515 instance->instancet->disable_intr(instance);
4516 megasas_sync_irqs((unsigned long)instance);
4517 rc = megasas_track_scsiio(instance, id, channel);
4518 instance->instancet->enable_intr(instance);
4519 megasas_enable_irq_poll(instance);
4520
4521 break;
4522 case MPI2_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET:
4523 case MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK:
4524 break;
4525 default:
4526 rc = FAILED;
4527 break;
4528 }
4529
4530 return rc;
4531
4532 }
4533
4534 /*
4535 * megasas_fusion_smid_lookup : Look for fusion command correpspodning to SCSI
4536 * @instance: per adapter struct
4537 *
4538 * Return Non Zero index, if SMID found in outstanding commands
4539 */
4540 static u16 megasas_fusion_smid_lookup(struct scsi_cmnd *scmd)
4541 {
4542 int i, ret = 0;
4543 struct megasas_instance *instance;
4544 struct megasas_cmd_fusion *cmd_fusion;
4545 struct fusion_context *fusion;
4546
4547 instance = (struct megasas_instance *)scmd->device->host->hostdata;
4548
4549 fusion = instance->ctrl_context;
4550
4551 for (i = 0; i < instance->max_scsi_cmds; i++) {
4552 cmd_fusion = fusion->cmd_list[i];
4553 if (cmd_fusion->scmd && (cmd_fusion->scmd == scmd)) {
4554 scmd_printk(KERN_NOTICE, scmd, "Abort request is for"
4555 " SMID: %d\n", cmd_fusion->index);
4556 ret = cmd_fusion->index;
4557 break;
4558 }
4559 }
4560
4561 return ret;
4562 }
4563
4564 /*
4565 * megasas_get_tm_devhandle - Get devhandle for TM request
4566 * @sdev- OS provided scsi device
4567 *
4568 * Returns- devhandle/targetID of SCSI device
4569 */
4570 static u16 megasas_get_tm_devhandle(struct scsi_device *sdev)
4571 {
4572 u16 pd_index = 0;
4573 u32 device_id;
4574 struct megasas_instance *instance;
4575 struct fusion_context *fusion;
4576 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
4577 u16 devhandle = (u16)ULONG_MAX;
4578
4579 instance = (struct megasas_instance *)sdev->host->hostdata;
4580 fusion = instance->ctrl_context;
4581
4582 if (!MEGASAS_IS_LOGICAL(sdev)) {
4583 if (instance->use_seqnum_jbod_fp) {
4584 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL)
4585 + sdev->id;
4586 pd_sync = (void *)fusion->pd_seq_sync
4587 [(instance->pd_seq_map_id - 1) & 1];
4588 devhandle = pd_sync->seq[pd_index].devHandle;
4589 } else
4590 sdev_printk(KERN_ERR, sdev, "Firmware expose tmCapable"
4591 " without JBOD MAP support from %s %d\n", __func__, __LINE__);
4592 } else {
4593 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
4594 + sdev->id;
4595 devhandle = device_id;
4596 }
4597
4598 return devhandle;
4599 }
4600
4601 /*
4602 * megasas_task_abort_fusion : SCSI task abort function for fusion adapters
4603 * @scmd : pointer to scsi command object
4604 *
4605 * Return SUCCESS, if command aborted else FAILED
4606 */
4607
4608 int megasas_task_abort_fusion(struct scsi_cmnd *scmd)
4609 {
4610 struct megasas_instance *instance;
4611 u16 smid, devhandle;
4612 int ret;
4613 struct MR_PRIV_DEVICE *mr_device_priv_data;
4614 mr_device_priv_data = scmd->device->hostdata;
4615
4616 instance = (struct megasas_instance *)scmd->device->host->hostdata;
4617
4618 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
4619 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL,"
4620 "SCSI host:%d\n", instance->host->host_no);
4621 ret = FAILED;
4622 return ret;
4623 }
4624
4625 if (!mr_device_priv_data) {
4626 sdev_printk(KERN_INFO, scmd->device, "device been deleted! "
4627 "scmd(%p)\n", scmd);
4628 scmd->result = DID_NO_CONNECT << 16;
4629 ret = SUCCESS;
4630 goto out;
4631 }
4632
4633 if (!mr_device_priv_data->is_tm_capable) {
4634 ret = FAILED;
4635 goto out;
4636 }
4637
4638 mutex_lock(&instance->reset_mutex);
4639
4640 smid = megasas_fusion_smid_lookup(scmd);
4641
4642 if (!smid) {
4643 ret = SUCCESS;
4644 scmd_printk(KERN_NOTICE, scmd, "Command for which abort is"
4645 " issued is not found in outstanding commands\n");
4646 mutex_unlock(&instance->reset_mutex);
4647 goto out;
4648 }
4649
4650 devhandle = megasas_get_tm_devhandle(scmd->device);
4651
4652 if (devhandle == (u16)ULONG_MAX) {
4653 ret = SUCCESS;
4654 sdev_printk(KERN_INFO, scmd->device,
4655 "task abort issued for invalid devhandle\n");
4656 mutex_unlock(&instance->reset_mutex);
4657 goto out;
4658 }
4659 sdev_printk(KERN_INFO, scmd->device,
4660 "attempting task abort! scmd(0x%p) tm_dev_handle 0x%x\n",
4661 scmd, devhandle);
4662
4663 mr_device_priv_data->tm_busy = 1;
4664 ret = megasas_issue_tm(instance, devhandle,
4665 scmd->device->channel, scmd->device->id, smid,
4666 MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK,
4667 mr_device_priv_data);
4668 mr_device_priv_data->tm_busy = 0;
4669
4670 mutex_unlock(&instance->reset_mutex);
4671 scmd_printk(KERN_INFO, scmd, "task abort %s!! scmd(0x%p)\n",
4672 ((ret == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
4673 out:
4674 scsi_print_command(scmd);
4675 if (megasas_dbg_lvl & TM_DEBUG)
4676 megasas_dump_fusion_io(scmd);
4677
4678 return ret;
4679 }
4680
4681 /*
4682 * megasas_reset_target_fusion : target reset function for fusion adapters
4683 * scmd: SCSI command pointer
4684 *
4685 * Returns SUCCESS if all commands associated with target aborted else FAILED
4686 */
4687
4688 int megasas_reset_target_fusion(struct scsi_cmnd *scmd)
4689 {
4690
4691 struct megasas_instance *instance;
4692 int ret = FAILED;
4693 u16 devhandle;
4694 struct MR_PRIV_DEVICE *mr_device_priv_data;
4695 mr_device_priv_data = scmd->device->hostdata;
4696
4697 instance = (struct megasas_instance *)scmd->device->host->hostdata;
4698
4699 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
4700 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL,"
4701 "SCSI host:%d\n", instance->host->host_no);
4702 ret = FAILED;
4703 return ret;
4704 }
4705
4706 if (!mr_device_priv_data) {
4707 sdev_printk(KERN_INFO, scmd->device,
4708 "device been deleted! scmd: (0x%p)\n", scmd);
4709 scmd->result = DID_NO_CONNECT << 16;
4710 ret = SUCCESS;
4711 goto out;
4712 }
4713
4714 if (!mr_device_priv_data->is_tm_capable) {
4715 ret = FAILED;
4716 goto out;
4717 }
4718
4719 mutex_lock(&instance->reset_mutex);
4720 devhandle = megasas_get_tm_devhandle(scmd->device);
4721
4722 if (devhandle == (u16)ULONG_MAX) {
4723 ret = SUCCESS;
4724 sdev_printk(KERN_INFO, scmd->device,
4725 "target reset issued for invalid devhandle\n");
4726 mutex_unlock(&instance->reset_mutex);
4727 goto out;
4728 }
4729
4730 sdev_printk(KERN_INFO, scmd->device,
4731 "attempting target reset! scmd(0x%p) tm_dev_handle: 0x%x\n",
4732 scmd, devhandle);
4733 mr_device_priv_data->tm_busy = 1;
4734 ret = megasas_issue_tm(instance, devhandle,
4735 scmd->device->channel, scmd->device->id, 0,
4736 MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET,
4737 mr_device_priv_data);
4738 mr_device_priv_data->tm_busy = 0;
4739 mutex_unlock(&instance->reset_mutex);
4740 scmd_printk(KERN_NOTICE, scmd, "target reset %s!!\n",
4741 (ret == SUCCESS) ? "SUCCESS" : "FAILED");
4742
4743 out:
4744 return ret;
4745 }
4746
4747 /*SRIOV get other instance in cluster if any*/
4748 static struct
4749 megasas_instance *megasas_get_peer_instance(struct megasas_instance *instance)
4750 {
4751 int i;
4752
4753 for (i = 0; i < MAX_MGMT_ADAPTERS; i++) {
4754 if (megasas_mgmt_info.instance[i] &&
4755 (megasas_mgmt_info.instance[i] != instance) &&
4756 megasas_mgmt_info.instance[i]->requestorId &&
4757 megasas_mgmt_info.instance[i]->peerIsPresent &&
4758 (memcmp((megasas_mgmt_info.instance[i]->clusterId),
4759 instance->clusterId, MEGASAS_CLUSTER_ID_SIZE) == 0))
4760 return megasas_mgmt_info.instance[i];
4761 }
4762 return NULL;
4763 }
4764
4765 /* Check for a second path that is currently UP */
4766 int megasas_check_mpio_paths(struct megasas_instance *instance,
4767 struct scsi_cmnd *scmd)
4768 {
4769 struct megasas_instance *peer_instance = NULL;
4770 int retval = (DID_REQUEUE << 16);
4771
4772 if (instance->peerIsPresent) {
4773 peer_instance = megasas_get_peer_instance(instance);
4774 if ((peer_instance) &&
4775 (atomic_read(&peer_instance->adprecovery) ==
4776 MEGASAS_HBA_OPERATIONAL))
4777 retval = (DID_NO_CONNECT << 16);
4778 }
4779 return retval;
4780 }
4781
4782 /* Core fusion reset function */
4783 int megasas_reset_fusion(struct Scsi_Host *shost, int reason)
4784 {
4785 int retval = SUCCESS, i, j, convert = 0;
4786 struct megasas_instance *instance;
4787 struct megasas_cmd_fusion *cmd_fusion, *r1_cmd;
4788 struct fusion_context *fusion;
4789 u32 abs_state, status_reg, reset_adapter, fpio_count = 0;
4790 u32 io_timeout_in_crash_mode = 0;
4791 struct scsi_cmnd *scmd_local = NULL;
4792 struct scsi_device *sdev;
4793 int ret_target_prop = DCMD_FAILED;
4794 bool is_target_prop = false;
4795 bool do_adp_reset = true;
4796 int max_reset_tries = MEGASAS_FUSION_MAX_RESET_TRIES;
4797
4798 instance = (struct megasas_instance *)shost->hostdata;
4799 fusion = instance->ctrl_context;
4800
4801 mutex_lock(&instance->reset_mutex);
4802
4803 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
4804 dev_warn(&instance->pdev->dev, "Hardware critical error, "
4805 "returning FAILED for scsi%d.\n",
4806 instance->host->host_no);
4807 mutex_unlock(&instance->reset_mutex);
4808 return FAILED;
4809 }
4810 status_reg = instance->instancet->read_fw_status_reg(instance);
4811 abs_state = status_reg & MFI_STATE_MASK;
4812
4813 /* IO timeout detected, forcibly put FW in FAULT state */
4814 if (abs_state != MFI_STATE_FAULT && instance->crash_dump_buf &&
4815 instance->crash_dump_app_support && reason) {
4816 dev_info(&instance->pdev->dev, "IO/DCMD timeout is detected, "
4817 "forcibly FAULT Firmware\n");
4818 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4819 status_reg = megasas_readl(instance, &instance->reg_set->doorbell);
4820 writel(status_reg | MFI_STATE_FORCE_OCR,
4821 &instance->reg_set->doorbell);
4822 readl(&instance->reg_set->doorbell);
4823 mutex_unlock(&instance->reset_mutex);
4824 do {
4825 ssleep(3);
4826 io_timeout_in_crash_mode++;
4827 dev_dbg(&instance->pdev->dev, "waiting for [%d] "
4828 "seconds for crash dump collection and OCR "
4829 "to be done\n", (io_timeout_in_crash_mode * 3));
4830 } while ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
4831 (io_timeout_in_crash_mode < 80));
4832
4833 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) {
4834 dev_info(&instance->pdev->dev, "OCR done for IO "
4835 "timeout case\n");
4836 retval = SUCCESS;
4837 } else {
4838 dev_info(&instance->pdev->dev, "Controller is not "
4839 "operational after 240 seconds wait for IO "
4840 "timeout case in FW crash dump mode\n do "
4841 "OCR/kill adapter\n");
4842 retval = megasas_reset_fusion(shost, 0);
4843 }
4844 return retval;
4845 }
4846
4847 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
4848 del_timer_sync(&instance->sriov_heartbeat_timer);
4849 set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
4850 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_POLLING);
4851 instance->instancet->disable_intr(instance);
4852 megasas_sync_irqs((unsigned long)instance);
4853
4854 /* First try waiting for commands to complete */
4855 if (megasas_wait_for_outstanding_fusion(instance, reason,
4856 &convert)) {
4857 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4858 dev_warn(&instance->pdev->dev, "resetting fusion "
4859 "adapter scsi%d.\n", instance->host->host_no);
4860 if (convert)
4861 reason = 0;
4862
4863 if (megasas_dbg_lvl & OCR_DEBUG)
4864 dev_info(&instance->pdev->dev, "\nPending SCSI commands:\n");
4865
4866 /* Now return commands back to the OS */
4867 for (i = 0 ; i < instance->max_scsi_cmds; i++) {
4868 cmd_fusion = fusion->cmd_list[i];
4869 /*check for extra commands issued by driver*/
4870 if (instance->adapter_type >= VENTURA_SERIES) {
4871 r1_cmd = fusion->cmd_list[i + instance->max_fw_cmds];
4872 megasas_return_cmd_fusion(instance, r1_cmd);
4873 }
4874 scmd_local = cmd_fusion->scmd;
4875 if (cmd_fusion->scmd) {
4876 if (megasas_dbg_lvl & OCR_DEBUG) {
4877 sdev_printk(KERN_INFO,
4878 cmd_fusion->scmd->device, "SMID: 0x%x\n",
4879 cmd_fusion->index);
4880 megasas_dump_fusion_io(cmd_fusion->scmd);
4881 }
4882
4883 if (cmd_fusion->io_request->Function ==
4884 MPI2_FUNCTION_SCSI_IO_REQUEST)
4885 fpio_count++;
4886
4887 scmd_local->result =
4888 megasas_check_mpio_paths(instance,
4889 scmd_local);
4890 if (instance->ldio_threshold &&
4891 megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)
4892 atomic_dec(&instance->ldio_outstanding);
4893 megasas_return_cmd_fusion(instance, cmd_fusion);
4894 scsi_dma_unmap(scmd_local);
4895 scmd_local->scsi_done(scmd_local);
4896 }
4897 }
4898
4899 dev_info(&instance->pdev->dev, "Outstanding fastpath IOs: %d\n",
4900 fpio_count);
4901
4902 atomic_set(&instance->fw_outstanding, 0);
4903
4904 status_reg = instance->instancet->read_fw_status_reg(instance);
4905 abs_state = status_reg & MFI_STATE_MASK;
4906 reset_adapter = status_reg & MFI_RESET_ADAPTER;
4907 if (instance->disableOnlineCtrlReset ||
4908 (abs_state == MFI_STATE_FAULT && !reset_adapter)) {
4909 /* Reset not supported, kill adapter */
4910 dev_warn(&instance->pdev->dev, "Reset not supported"
4911 ", killing adapter scsi%d.\n",
4912 instance->host->host_no);
4913 goto kill_hba;
4914 }
4915
4916 /* Let SR-IOV VF & PF sync up if there was a HB failure */
4917 if (instance->requestorId && !reason) {
4918 msleep(MEGASAS_OCR_SETTLE_TIME_VF);
4919 do_adp_reset = false;
4920 max_reset_tries = MEGASAS_SRIOV_MAX_RESET_TRIES_VF;
4921 }
4922
4923 /* Now try to reset the chip */
4924 for (i = 0; i < max_reset_tries; i++) {
4925 /*
4926 * Do adp reset and wait for
4927 * controller to transition to ready
4928 */
4929 if (megasas_adp_reset_wait_for_ready(instance,
4930 do_adp_reset, 1) == FAILED)
4931 continue;
4932
4933 /* Wait for FW to become ready */
4934 if (megasas_transition_to_ready(instance, 1)) {
4935 dev_warn(&instance->pdev->dev,
4936 "Failed to transition controller to ready for "
4937 "scsi%d.\n", instance->host->host_no);
4938 continue;
4939 }
4940 megasas_reset_reply_desc(instance);
4941 megasas_fusion_update_can_queue(instance, OCR_CONTEXT);
4942
4943 if (megasas_ioc_init_fusion(instance)) {
4944 continue;
4945 }
4946
4947 if (megasas_get_ctrl_info(instance)) {
4948 dev_info(&instance->pdev->dev,
4949 "Failed from %s %d\n",
4950 __func__, __LINE__);
4951 goto kill_hba;
4952 }
4953
4954 megasas_refire_mgmt_cmd(instance);
4955
4956 /* Reset load balance info */
4957 if (fusion->load_balance_info)
4958 memset(fusion->load_balance_info, 0,
4959 (sizeof(struct LD_LOAD_BALANCE_INFO) *
4960 MAX_LOGICAL_DRIVES_EXT));
4961
4962 if (!megasas_get_map_info(instance))
4963 megasas_sync_map_info(instance);
4964
4965 megasas_setup_jbod_map(instance);
4966
4967 /* reset stream detection array */
4968 if (instance->adapter_type >= VENTURA_SERIES) {
4969 for (j = 0; j < MAX_LOGICAL_DRIVES_EXT; ++j) {
4970 memset(fusion->stream_detect_by_ld[j],
4971 0, sizeof(struct LD_STREAM_DETECT));
4972 fusion->stream_detect_by_ld[j]->mru_bit_map
4973 = MR_STREAM_BITMAP;
4974 }
4975 }
4976
4977 clear_bit(MEGASAS_FUSION_IN_RESET,
4978 &instance->reset_flags);
4979 instance->instancet->enable_intr(instance);
4980 megasas_enable_irq_poll(instance);
4981 shost_for_each_device(sdev, shost) {
4982 if ((instance->tgt_prop) &&
4983 (instance->nvme_page_size))
4984 ret_target_prop = megasas_get_target_prop(instance, sdev);
4985
4986 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
4987 megasas_set_dynamic_target_properties(sdev, is_target_prop);
4988 }
4989
4990 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
4991
4992 dev_info(&instance->pdev->dev,
4993 "Adapter is OPERATIONAL for scsi:%d\n",
4994 instance->host->host_no);
4995
4996 /* Restart SR-IOV heartbeat */
4997 if (instance->requestorId) {
4998 if (!megasas_sriov_start_heartbeat(instance, 0))
4999 megasas_start_timer(instance);
5000 else
5001 instance->skip_heartbeat_timer_del = 1;
5002 }
5003
5004 if (instance->crash_dump_drv_support &&
5005 instance->crash_dump_app_support)
5006 megasas_set_crash_dump_params(instance,
5007 MR_CRASH_BUF_TURN_ON);
5008 else
5009 megasas_set_crash_dump_params(instance,
5010 MR_CRASH_BUF_TURN_OFF);
5011
5012 if (instance->snapdump_wait_time) {
5013 megasas_get_snapdump_properties(instance);
5014 dev_info(&instance->pdev->dev,
5015 "Snap dump wait time\t: %d\n",
5016 instance->snapdump_wait_time);
5017 }
5018
5019 retval = SUCCESS;
5020
5021 /* Adapter reset completed successfully */
5022 dev_warn(&instance->pdev->dev,
5023 "Reset successful for scsi%d.\n",
5024 instance->host->host_no);
5025
5026 goto out;
5027 }
5028 /* Reset failed, kill the adapter */
5029 dev_warn(&instance->pdev->dev, "Reset failed, killing "
5030 "adapter scsi%d.\n", instance->host->host_no);
5031 goto kill_hba;
5032 } else {
5033 /* For VF: Restart HB timer if we didn't OCR */
5034 if (instance->requestorId) {
5035 megasas_start_timer(instance);
5036 }
5037 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
5038 instance->instancet->enable_intr(instance);
5039 megasas_enable_irq_poll(instance);
5040 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
5041 goto out;
5042 }
5043 kill_hba:
5044 megaraid_sas_kill_hba(instance);
5045 megasas_enable_irq_poll(instance);
5046 instance->skip_heartbeat_timer_del = 1;
5047 retval = FAILED;
5048 out:
5049 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
5050 mutex_unlock(&instance->reset_mutex);
5051 return retval;
5052 }
5053
5054 /* Fusion Crash dump collection */
5055 static void megasas_fusion_crash_dump(struct megasas_instance *instance)
5056 {
5057 u32 status_reg;
5058 u8 partial_copy = 0;
5059 int wait = 0;
5060
5061
5062 status_reg = instance->instancet->read_fw_status_reg(instance);
5063
5064 /*
5065 * Allocate host crash buffers to copy data from 1 MB DMA crash buffer
5066 * to host crash buffers
5067 */
5068 if (instance->drv_buf_index == 0) {
5069 /* Buffer is already allocated for old Crash dump.
5070 * Do OCR and do not wait for crash dump collection
5071 */
5072 if (instance->drv_buf_alloc) {
5073 dev_info(&instance->pdev->dev, "earlier crash dump is "
5074 "not yet copied by application, ignoring this "
5075 "crash dump and initiating OCR\n");
5076 status_reg |= MFI_STATE_CRASH_DUMP_DONE;
5077 writel(status_reg,
5078 &instance->reg_set->outbound_scratch_pad_0);
5079 readl(&instance->reg_set->outbound_scratch_pad_0);
5080 return;
5081 }
5082 megasas_alloc_host_crash_buffer(instance);
5083 dev_info(&instance->pdev->dev, "Number of host crash buffers "
5084 "allocated: %d\n", instance->drv_buf_alloc);
5085 }
5086
5087 while (!(status_reg & MFI_STATE_CRASH_DUMP_DONE) &&
5088 (wait < MEGASAS_WATCHDOG_WAIT_COUNT)) {
5089 if (!(status_reg & MFI_STATE_DMADONE)) {
5090 /*
5091 * Next crash dump buffer is not yet DMA'd by FW
5092 * Check after 10ms. Wait for 1 second for FW to
5093 * post the next buffer. If not bail out.
5094 */
5095 wait++;
5096 msleep(MEGASAS_WAIT_FOR_NEXT_DMA_MSECS);
5097 status_reg = instance->instancet->read_fw_status_reg(
5098 instance);
5099 continue;
5100 }
5101
5102 wait = 0;
5103 if (instance->drv_buf_index >= instance->drv_buf_alloc) {
5104 dev_info(&instance->pdev->dev,
5105 "Driver is done copying the buffer: %d\n",
5106 instance->drv_buf_alloc);
5107 status_reg |= MFI_STATE_CRASH_DUMP_DONE;
5108 partial_copy = 1;
5109 break;
5110 } else {
5111 memcpy(instance->crash_buf[instance->drv_buf_index],
5112 instance->crash_dump_buf, CRASH_DMA_BUF_SIZE);
5113 instance->drv_buf_index++;
5114 status_reg &= ~MFI_STATE_DMADONE;
5115 }
5116
5117 writel(status_reg, &instance->reg_set->outbound_scratch_pad_0);
5118 readl(&instance->reg_set->outbound_scratch_pad_0);
5119
5120 msleep(MEGASAS_WAIT_FOR_NEXT_DMA_MSECS);
5121 status_reg = instance->instancet->read_fw_status_reg(instance);
5122 }
5123
5124 if (status_reg & MFI_STATE_CRASH_DUMP_DONE) {
5125 dev_info(&instance->pdev->dev, "Crash Dump is available,number "
5126 "of copied buffers: %d\n", instance->drv_buf_index);
5127 instance->fw_crash_buffer_size = instance->drv_buf_index;
5128 instance->fw_crash_state = AVAILABLE;
5129 instance->drv_buf_index = 0;
5130 writel(status_reg, &instance->reg_set->outbound_scratch_pad_0);
5131 readl(&instance->reg_set->outbound_scratch_pad_0);
5132 if (!partial_copy)
5133 megasas_reset_fusion(instance->host, 0);
5134 }
5135 }
5136
5137
5138 /* Fusion OCR work queue */
5139 void megasas_fusion_ocr_wq(struct work_struct *work)
5140 {
5141 struct megasas_instance *instance =
5142 container_of(work, struct megasas_instance, work_init);
5143
5144 megasas_reset_fusion(instance->host, 0);
5145 }
5146
5147 /* Allocate fusion context */
5148 int
5149 megasas_alloc_fusion_context(struct megasas_instance *instance)
5150 {
5151 struct fusion_context *fusion;
5152
5153 instance->ctrl_context = kzalloc(sizeof(struct fusion_context),
5154 GFP_KERNEL);
5155 if (!instance->ctrl_context) {
5156 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
5157 __func__, __LINE__);
5158 return -ENOMEM;
5159 }
5160
5161 fusion = instance->ctrl_context;
5162
5163 fusion->log_to_span_pages = get_order(MAX_LOGICAL_DRIVES_EXT *
5164 sizeof(LD_SPAN_INFO));
5165 fusion->log_to_span =
5166 (PLD_SPAN_INFO)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
5167 fusion->log_to_span_pages);
5168 if (!fusion->log_to_span) {
5169 fusion->log_to_span =
5170 vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT,
5171 sizeof(LD_SPAN_INFO)));
5172 if (!fusion->log_to_span) {
5173 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
5174 __func__, __LINE__);
5175 return -ENOMEM;
5176 }
5177 }
5178
5179 fusion->load_balance_info_pages = get_order(MAX_LOGICAL_DRIVES_EXT *
5180 sizeof(struct LD_LOAD_BALANCE_INFO));
5181 fusion->load_balance_info =
5182 (struct LD_LOAD_BALANCE_INFO *)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
5183 fusion->load_balance_info_pages);
5184 if (!fusion->load_balance_info) {
5185 fusion->load_balance_info =
5186 vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT,
5187 sizeof(struct LD_LOAD_BALANCE_INFO)));
5188 if (!fusion->load_balance_info)
5189 dev_err(&instance->pdev->dev, "Failed to allocate load_balance_info, "
5190 "continuing without Load Balance support\n");
5191 }
5192
5193 return 0;
5194 }
5195
5196 void
5197 megasas_free_fusion_context(struct megasas_instance *instance)
5198 {
5199 struct fusion_context *fusion = instance->ctrl_context;
5200
5201 if (fusion) {
5202 if (fusion->load_balance_info) {
5203 if (is_vmalloc_addr(fusion->load_balance_info))
5204 vfree(fusion->load_balance_info);
5205 else
5206 free_pages((ulong)fusion->load_balance_info,
5207 fusion->load_balance_info_pages);
5208 }
5209
5210 if (fusion->log_to_span) {
5211 if (is_vmalloc_addr(fusion->log_to_span))
5212 vfree(fusion->log_to_span);
5213 else
5214 free_pages((ulong)fusion->log_to_span,
5215 fusion->log_to_span_pages);
5216 }
5217
5218 kfree(fusion);
5219 }
5220 }
5221
5222 struct megasas_instance_template megasas_instance_template_fusion = {
5223 .enable_intr = megasas_enable_intr_fusion,
5224 .disable_intr = megasas_disable_intr_fusion,
5225 .clear_intr = megasas_clear_intr_fusion,
5226 .read_fw_status_reg = megasas_read_fw_status_reg_fusion,
5227 .adp_reset = megasas_adp_reset_fusion,
5228 .check_reset = megasas_check_reset_fusion,
5229 .service_isr = megasas_isr_fusion,
5230 .tasklet = megasas_complete_cmd_dpc_fusion,
5231 .init_adapter = megasas_init_adapter_fusion,
5232 .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion,
5233 .issue_dcmd = megasas_issue_dcmd_fusion,
5234 };
Linux with added FPC-III support