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gpio: rcar: Fix runtime PM imbalance on error
[linux/fpc-iii.git] / drivers / scsi / megaraid / megaraid_sas_fusion.c
blobb2ad96564484000ca4ca1c10bb9f984601a8ace9
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 static inline void
369 megasas_get_msix_index(struct megasas_instance *instance,
370 struct scsi_cmnd *scmd,
371 struct megasas_cmd_fusion *cmd,
372 u8 data_arms)
373 {
374 int sdev_busy;
375
376 /* nr_hw_queue = 1 for MegaRAID */
377 struct blk_mq_hw_ctx *hctx =
378 scmd->device->request_queue->queue_hw_ctx[0];
379
380 sdev_busy = atomic_read(&hctx->nr_active);
381
382 if (instance->perf_mode == MR_BALANCED_PERF_MODE &&
383 sdev_busy > (data_arms * MR_DEVICE_HIGH_IOPS_DEPTH))
384 cmd->request_desc->SCSIIO.MSIxIndex =
385 mega_mod64((atomic64_add_return(1, &instance->high_iops_outstanding) /
386 MR_HIGH_IOPS_BATCH_COUNT), instance->low_latency_index_start);
387 else if (instance->msix_load_balance)
388 cmd->request_desc->SCSIIO.MSIxIndex =
389 (mega_mod64(atomic64_add_return(1, &instance->total_io_count),
390 instance->msix_vectors));
391 else
392 cmd->request_desc->SCSIIO.MSIxIndex =
393 instance->reply_map[raw_smp_processor_id()];
394 }
395
396 /**
397 * megasas_free_cmds_fusion - Free all the cmds in the free cmd pool
398 * @instance: Adapter soft state
399 */
400 void
401 megasas_free_cmds_fusion(struct megasas_instance *instance)
402 {
403 int i;
404 struct fusion_context *fusion = instance->ctrl_context;
405 struct megasas_cmd_fusion *cmd;
406
407 if (fusion->sense)
408 dma_pool_free(fusion->sense_dma_pool, fusion->sense,
409 fusion->sense_phys_addr);
410
411 /* SG */
412 if (fusion->cmd_list) {
413 for (i = 0; i < instance->max_mpt_cmds; i++) {
414 cmd = fusion->cmd_list[i];
415 if (cmd) {
416 if (cmd->sg_frame)
417 dma_pool_free(fusion->sg_dma_pool,
418 cmd->sg_frame,
419 cmd->sg_frame_phys_addr);
420 }
421 kfree(cmd);
422 }
423 kfree(fusion->cmd_list);
424 }
425
426 if (fusion->sg_dma_pool) {
427 dma_pool_destroy(fusion->sg_dma_pool);
428 fusion->sg_dma_pool = NULL;
429 }
430 if (fusion->sense_dma_pool) {
431 dma_pool_destroy(fusion->sense_dma_pool);
432 fusion->sense_dma_pool = NULL;
433 }
434
435
436 /* Reply Frame, Desc*/
437 if (instance->is_rdpq)
438 megasas_free_rdpq_fusion(instance);
439 else
440 megasas_free_reply_fusion(instance);
441
442 /* Request Frame, Desc*/
443 if (fusion->req_frames_desc)
444 dma_free_coherent(&instance->pdev->dev,
445 fusion->request_alloc_sz, fusion->req_frames_desc,
446 fusion->req_frames_desc_phys);
447 if (fusion->io_request_frames)
448 dma_pool_free(fusion->io_request_frames_pool,
449 fusion->io_request_frames,
450 fusion->io_request_frames_phys);
451 if (fusion->io_request_frames_pool) {
452 dma_pool_destroy(fusion->io_request_frames_pool);
453 fusion->io_request_frames_pool = NULL;
454 }
455 }
456
457 /**
458 * megasas_create_sg_sense_fusion - Creates DMA pool for cmd frames
459 * @instance: Adapter soft state
460 *
461 */
462 static int megasas_create_sg_sense_fusion(struct megasas_instance *instance)
463 {
464 int i;
465 u16 max_cmd;
466 struct fusion_context *fusion;
467 struct megasas_cmd_fusion *cmd;
468 int sense_sz;
469 u32 offset;
470
471 fusion = instance->ctrl_context;
472 max_cmd = instance->max_fw_cmds;
473 sense_sz = instance->max_mpt_cmds * SCSI_SENSE_BUFFERSIZE;
474
475 fusion->sg_dma_pool =
476 dma_pool_create("mr_sg", &instance->pdev->dev,
477 instance->max_chain_frame_sz,
478 MR_DEFAULT_NVME_PAGE_SIZE, 0);
479 /* SCSI_SENSE_BUFFERSIZE = 96 bytes */
480 fusion->sense_dma_pool =
481 dma_pool_create("mr_sense", &instance->pdev->dev,
482 sense_sz, 64, 0);
483
484 if (!fusion->sense_dma_pool || !fusion->sg_dma_pool) {
485 dev_err(&instance->pdev->dev,
486 "Failed from %s %d\n", __func__, __LINE__);
487 return -ENOMEM;
488 }
489
490 fusion->sense = dma_pool_alloc(fusion->sense_dma_pool,
491 GFP_KERNEL, &fusion->sense_phys_addr);
492 if (!fusion->sense) {
493 dev_err(&instance->pdev->dev,
494 "failed from %s %d\n", __func__, __LINE__);
495 return -ENOMEM;
496 }
497
498 /* sense buffer, request frame and reply desc pool requires to be in
499 * same 4 gb region. Below function will check this.
500 * In case of failure, new pci pool will be created with updated
501 * alignment.
502 * Older allocation and pool will be destroyed.
503 * Alignment will be used such a way that next allocation if success,
504 * will always meet same 4gb region requirement.
505 * Actual requirement is not alignment, but we need start and end of
506 * DMA address must have same upper 32 bit address.
507 */
508
509 if (!megasas_check_same_4gb_region(instance, fusion->sense_phys_addr,
510 sense_sz)) {
511 dma_pool_free(fusion->sense_dma_pool, fusion->sense,
512 fusion->sense_phys_addr);
513 fusion->sense = NULL;
514 dma_pool_destroy(fusion->sense_dma_pool);
515
516 fusion->sense_dma_pool =
517 dma_pool_create("mr_sense_align", &instance->pdev->dev,
518 sense_sz, roundup_pow_of_two(sense_sz),
519 0);
520 if (!fusion->sense_dma_pool) {
521 dev_err(&instance->pdev->dev,
522 "Failed from %s %d\n", __func__, __LINE__);
523 return -ENOMEM;
524 }
525 fusion->sense = dma_pool_alloc(fusion->sense_dma_pool,
526 GFP_KERNEL,
527 &fusion->sense_phys_addr);
528 if (!fusion->sense) {
529 dev_err(&instance->pdev->dev,
530 "failed from %s %d\n", __func__, __LINE__);
531 return -ENOMEM;
532 }
533 }
534
535 /*
536 * Allocate and attach a frame to each of the commands in cmd_list
537 */
538 for (i = 0; i < max_cmd; i++) {
539 cmd = fusion->cmd_list[i];
540 cmd->sg_frame = dma_pool_alloc(fusion->sg_dma_pool,
541 GFP_KERNEL, &cmd->sg_frame_phys_addr);
542
543 offset = SCSI_SENSE_BUFFERSIZE * i;
544 cmd->sense = (u8 *)fusion->sense + offset;
545 cmd->sense_phys_addr = fusion->sense_phys_addr + offset;
546
547 if (!cmd->sg_frame) {
548 dev_err(&instance->pdev->dev,
549 "Failed from %s %d\n", __func__, __LINE__);
550 return -ENOMEM;
551 }
552 }
553
554 /* create sense buffer for the raid 1/10 fp */
555 for (i = max_cmd; i < instance->max_mpt_cmds; i++) {
556 cmd = fusion->cmd_list[i];
557 offset = SCSI_SENSE_BUFFERSIZE * i;
558 cmd->sense = (u8 *)fusion->sense + offset;
559 cmd->sense_phys_addr = fusion->sense_phys_addr + offset;
560
561 }
562
563 return 0;
564 }
565
566 static int
567 megasas_alloc_cmdlist_fusion(struct megasas_instance *instance)
568 {
569 u32 max_mpt_cmd, i, j;
570 struct fusion_context *fusion;
571
572 fusion = instance->ctrl_context;
573
574 max_mpt_cmd = instance->max_mpt_cmds;
575
576 /*
577 * fusion->cmd_list is an array of struct megasas_cmd_fusion pointers.
578 * Allocate the dynamic array first and then allocate individual
579 * commands.
580 */
581 fusion->cmd_list =
582 kcalloc(max_mpt_cmd, sizeof(struct megasas_cmd_fusion *),
583 GFP_KERNEL);
584 if (!fusion->cmd_list) {
585 dev_err(&instance->pdev->dev,
586 "Failed from %s %d\n", __func__, __LINE__);
587 return -ENOMEM;
588 }
589
590 for (i = 0; i < max_mpt_cmd; i++) {
591 fusion->cmd_list[i] = kzalloc(sizeof(struct megasas_cmd_fusion),
592 GFP_KERNEL);
593 if (!fusion->cmd_list[i]) {
594 for (j = 0; j < i; j++)
595 kfree(fusion->cmd_list[j]);
596 kfree(fusion->cmd_list);
597 dev_err(&instance->pdev->dev,
598 "Failed from %s %d\n", __func__, __LINE__);
599 return -ENOMEM;
600 }
601 }
602
603 return 0;
604 }
605
606 static int
607 megasas_alloc_request_fusion(struct megasas_instance *instance)
608 {
609 struct fusion_context *fusion;
610
611 fusion = instance->ctrl_context;
612
613 retry_alloc:
614 fusion->io_request_frames_pool =
615 dma_pool_create("mr_ioreq", &instance->pdev->dev,
616 fusion->io_frames_alloc_sz, 16, 0);
617
618 if (!fusion->io_request_frames_pool) {
619 dev_err(&instance->pdev->dev,
620 "Failed from %s %d\n", __func__, __LINE__);
621 return -ENOMEM;
622 }
623
624 fusion->io_request_frames =
625 dma_pool_alloc(fusion->io_request_frames_pool,
626 GFP_KERNEL | __GFP_NOWARN,
627 &fusion->io_request_frames_phys);
628 if (!fusion->io_request_frames) {
629 if (instance->max_fw_cmds >= (MEGASAS_REDUCE_QD_COUNT * 2)) {
630 instance->max_fw_cmds -= MEGASAS_REDUCE_QD_COUNT;
631 dma_pool_destroy(fusion->io_request_frames_pool);
632 megasas_configure_queue_sizes(instance);
633 goto retry_alloc;
634 } else {
635 dev_err(&instance->pdev->dev,
636 "Failed from %s %d\n", __func__, __LINE__);
637 return -ENOMEM;
638 }
639 }
640
641 if (!megasas_check_same_4gb_region(instance,
642 fusion->io_request_frames_phys,
643 fusion->io_frames_alloc_sz)) {
644 dma_pool_free(fusion->io_request_frames_pool,
645 fusion->io_request_frames,
646 fusion->io_request_frames_phys);
647 fusion->io_request_frames = NULL;
648 dma_pool_destroy(fusion->io_request_frames_pool);
649
650 fusion->io_request_frames_pool =
651 dma_pool_create("mr_ioreq_align",
652 &instance->pdev->dev,
653 fusion->io_frames_alloc_sz,
654 roundup_pow_of_two(fusion->io_frames_alloc_sz),
655 0);
656
657 if (!fusion->io_request_frames_pool) {
658 dev_err(&instance->pdev->dev,
659 "Failed from %s %d\n", __func__, __LINE__);
660 return -ENOMEM;
661 }
662
663 fusion->io_request_frames =
664 dma_pool_alloc(fusion->io_request_frames_pool,
665 GFP_KERNEL | __GFP_NOWARN,
666 &fusion->io_request_frames_phys);
667
668 if (!fusion->io_request_frames) {
669 dev_err(&instance->pdev->dev,
670 "Failed from %s %d\n", __func__, __LINE__);
671 return -ENOMEM;
672 }
673 }
674
675 fusion->req_frames_desc =
676 dma_alloc_coherent(&instance->pdev->dev,
677 fusion->request_alloc_sz,
678 &fusion->req_frames_desc_phys, GFP_KERNEL);
679 if (!fusion->req_frames_desc) {
680 dev_err(&instance->pdev->dev,
681 "Failed from %s %d\n", __func__, __LINE__);
682 return -ENOMEM;
683 }
684
685 return 0;
686 }
687
688 static int
689 megasas_alloc_reply_fusion(struct megasas_instance *instance)
690 {
691 int i, count;
692 struct fusion_context *fusion;
693 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
694 fusion = instance->ctrl_context;
695
696 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
697 fusion->reply_frames_desc_pool =
698 dma_pool_create("mr_reply", &instance->pdev->dev,
699 fusion->reply_alloc_sz * count, 16, 0);
700
701 if (!fusion->reply_frames_desc_pool) {
702 dev_err(&instance->pdev->dev,
703 "Failed from %s %d\n", __func__, __LINE__);
704 return -ENOMEM;
705 }
706
707 fusion->reply_frames_desc[0] =
708 dma_pool_alloc(fusion->reply_frames_desc_pool,
709 GFP_KERNEL, &fusion->reply_frames_desc_phys[0]);
710 if (!fusion->reply_frames_desc[0]) {
711 dev_err(&instance->pdev->dev,
712 "Failed from %s %d\n", __func__, __LINE__);
713 return -ENOMEM;
714 }
715
716 if (!megasas_check_same_4gb_region(instance,
717 fusion->reply_frames_desc_phys[0],
718 (fusion->reply_alloc_sz * count))) {
719 dma_pool_free(fusion->reply_frames_desc_pool,
720 fusion->reply_frames_desc[0],
721 fusion->reply_frames_desc_phys[0]);
722 fusion->reply_frames_desc[0] = NULL;
723 dma_pool_destroy(fusion->reply_frames_desc_pool);
724
725 fusion->reply_frames_desc_pool =
726 dma_pool_create("mr_reply_align",
727 &instance->pdev->dev,
728 fusion->reply_alloc_sz * count,
729 roundup_pow_of_two(fusion->reply_alloc_sz * count),
730 0);
731
732 if (!fusion->reply_frames_desc_pool) {
733 dev_err(&instance->pdev->dev,
734 "Failed from %s %d\n", __func__, __LINE__);
735 return -ENOMEM;
736 }
737
738 fusion->reply_frames_desc[0] =
739 dma_pool_alloc(fusion->reply_frames_desc_pool,
740 GFP_KERNEL,
741 &fusion->reply_frames_desc_phys[0]);
742
743 if (!fusion->reply_frames_desc[0]) {
744 dev_err(&instance->pdev->dev,
745 "Failed from %s %d\n", __func__, __LINE__);
746 return -ENOMEM;
747 }
748 }
749
750 reply_desc = fusion->reply_frames_desc[0];
751 for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++)
752 reply_desc->Words = cpu_to_le64(ULLONG_MAX);
753
754 /* This is not a rdpq mode, but driver still populate
755 * reply_frame_desc array to use same msix index in ISR path.
756 */
757 for (i = 0; i < (count - 1); i++)
758 fusion->reply_frames_desc[i + 1] =
759 fusion->reply_frames_desc[i] +
760 (fusion->reply_alloc_sz)/sizeof(union MPI2_REPLY_DESCRIPTORS_UNION);
761
762 return 0;
763 }
764
765 static int
766 megasas_alloc_rdpq_fusion(struct megasas_instance *instance)
767 {
768 int i, j, k, msix_count;
769 struct fusion_context *fusion;
770 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
771 union MPI2_REPLY_DESCRIPTORS_UNION *rdpq_chunk_virt[RDPQ_MAX_CHUNK_COUNT];
772 dma_addr_t rdpq_chunk_phys[RDPQ_MAX_CHUNK_COUNT];
773 u8 dma_alloc_count, abs_index;
774 u32 chunk_size, array_size, offset;
775
776 fusion = instance->ctrl_context;
777 chunk_size = fusion->reply_alloc_sz * RDPQ_MAX_INDEX_IN_ONE_CHUNK;
778 array_size = sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) *
779 MAX_MSIX_QUEUES_FUSION;
780
781 fusion->rdpq_virt = dma_alloc_coherent(&instance->pdev->dev,
782 array_size, &fusion->rdpq_phys,
783 GFP_KERNEL);
784 if (!fusion->rdpq_virt) {
785 dev_err(&instance->pdev->dev,
786 "Failed from %s %d\n", __func__, __LINE__);
787 return -ENOMEM;
788 }
789
790 msix_count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
791
792 fusion->reply_frames_desc_pool = dma_pool_create("mr_rdpq",
793 &instance->pdev->dev,
794 chunk_size, 16, 0);
795 fusion->reply_frames_desc_pool_align =
796 dma_pool_create("mr_rdpq_align",
797 &instance->pdev->dev,
798 chunk_size,
799 roundup_pow_of_two(chunk_size),
800 0);
801
802 if (!fusion->reply_frames_desc_pool ||
803 !fusion->reply_frames_desc_pool_align) {
804 dev_err(&instance->pdev->dev,
805 "Failed from %s %d\n", __func__, __LINE__);
806 return -ENOMEM;
807 }
808
809 /*
810 * For INVADER_SERIES each set of 8 reply queues(0-7, 8-15, ..) and
811 * VENTURA_SERIES each set of 16 reply queues(0-15, 16-31, ..) should be
812 * within 4GB boundary and also reply queues in a set must have same
813 * upper 32-bits in their memory address. so here driver is allocating the
814 * DMA'able memory for reply queues according. Driver uses limitation of
815 * VENTURA_SERIES to manage INVADER_SERIES as well.
816 */
817 dma_alloc_count = DIV_ROUND_UP(msix_count, RDPQ_MAX_INDEX_IN_ONE_CHUNK);
818
819 for (i = 0; i < dma_alloc_count; i++) {
820 rdpq_chunk_virt[i] =
821 dma_pool_alloc(fusion->reply_frames_desc_pool,
822 GFP_KERNEL, &rdpq_chunk_phys[i]);
823 if (!rdpq_chunk_virt[i]) {
824 dev_err(&instance->pdev->dev,
825 "Failed from %s %d\n", __func__, __LINE__);
826 return -ENOMEM;
827 }
828 /* reply desc pool requires to be in same 4 gb region.
829 * Below function will check this.
830 * In case of failure, new pci pool will be created with updated
831 * alignment.
832 * For RDPQ buffers, driver always allocate two separate pci pool.
833 * Alignment will be used such a way that next allocation if
834 * success, will always meet same 4gb region requirement.
835 * rdpq_tracker keep track of each buffer's physical,
836 * virtual address and pci pool descriptor. It will help driver
837 * while freeing the resources.
838 *
839 */
840 if (!megasas_check_same_4gb_region(instance, rdpq_chunk_phys[i],
841 chunk_size)) {
842 dma_pool_free(fusion->reply_frames_desc_pool,
843 rdpq_chunk_virt[i],
844 rdpq_chunk_phys[i]);
845
846 rdpq_chunk_virt[i] =
847 dma_pool_alloc(fusion->reply_frames_desc_pool_align,
848 GFP_KERNEL, &rdpq_chunk_phys[i]);
849 if (!rdpq_chunk_virt[i]) {
850 dev_err(&instance->pdev->dev,
851 "Failed from %s %d\n",
852 __func__, __LINE__);
853 return -ENOMEM;
854 }
855 fusion->rdpq_tracker[i].dma_pool_ptr =
856 fusion->reply_frames_desc_pool_align;
857 } else {
858 fusion->rdpq_tracker[i].dma_pool_ptr =
859 fusion->reply_frames_desc_pool;
860 }
861
862 fusion->rdpq_tracker[i].pool_entry_phys = rdpq_chunk_phys[i];
863 fusion->rdpq_tracker[i].pool_entry_virt = rdpq_chunk_virt[i];
864 }
865
866 for (k = 0; k < dma_alloc_count; k++) {
867 for (i = 0; i < RDPQ_MAX_INDEX_IN_ONE_CHUNK; i++) {
868 abs_index = (k * RDPQ_MAX_INDEX_IN_ONE_CHUNK) + i;
869
870 if (abs_index == msix_count)
871 break;
872 offset = fusion->reply_alloc_sz * i;
873 fusion->rdpq_virt[abs_index].RDPQBaseAddress =
874 cpu_to_le64(rdpq_chunk_phys[k] + offset);
875 fusion->reply_frames_desc_phys[abs_index] =
876 rdpq_chunk_phys[k] + offset;
877 fusion->reply_frames_desc[abs_index] =
878 (union MPI2_REPLY_DESCRIPTORS_UNION *)((u8 *)rdpq_chunk_virt[k] + offset);
879
880 reply_desc = fusion->reply_frames_desc[abs_index];
881 for (j = 0; j < fusion->reply_q_depth; j++, reply_desc++)
882 reply_desc->Words = ULLONG_MAX;
883 }
884 }
885
886 return 0;
887 }
888
889 static void
890 megasas_free_rdpq_fusion(struct megasas_instance *instance) {
891
892 int i;
893 struct fusion_context *fusion;
894
895 fusion = instance->ctrl_context;
896
897 for (i = 0; i < RDPQ_MAX_CHUNK_COUNT; i++) {
898 if (fusion->rdpq_tracker[i].pool_entry_virt)
899 dma_pool_free(fusion->rdpq_tracker[i].dma_pool_ptr,
900 fusion->rdpq_tracker[i].pool_entry_virt,
901 fusion->rdpq_tracker[i].pool_entry_phys);
902
903 }
904
905 dma_pool_destroy(fusion->reply_frames_desc_pool);
906 dma_pool_destroy(fusion->reply_frames_desc_pool_align);
907
908 if (fusion->rdpq_virt)
909 dma_free_coherent(&instance->pdev->dev,
910 sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * MAX_MSIX_QUEUES_FUSION,
911 fusion->rdpq_virt, fusion->rdpq_phys);
912 }
913
914 static void
915 megasas_free_reply_fusion(struct megasas_instance *instance) {
916
917 struct fusion_context *fusion;
918
919 fusion = instance->ctrl_context;
920
921 if (fusion->reply_frames_desc[0])
922 dma_pool_free(fusion->reply_frames_desc_pool,
923 fusion->reply_frames_desc[0],
924 fusion->reply_frames_desc_phys[0]);
925
926 dma_pool_destroy(fusion->reply_frames_desc_pool);
927
928 }
929
930
931 /**
932 * megasas_alloc_cmds_fusion - Allocates the command packets
933 * @instance: Adapter soft state
934 *
935 *
936 * Each frame has a 32-bit field called context. This context is used to get
937 * back the megasas_cmd_fusion from the frame when a frame gets completed
938 * In this driver, the 32 bit values are the indices into an array cmd_list.
939 * This array is used only to look up the megasas_cmd_fusion given the context.
940 * The free commands themselves are maintained in a linked list called cmd_pool.
941 *
942 * cmds are formed in the io_request and sg_frame members of the
943 * megasas_cmd_fusion. The context field is used to get a request descriptor
944 * and is used as SMID of the cmd.
945 * SMID value range is from 1 to max_fw_cmds.
946 */
947 static int
948 megasas_alloc_cmds_fusion(struct megasas_instance *instance)
949 {
950 int i;
951 struct fusion_context *fusion;
952 struct megasas_cmd_fusion *cmd;
953 u32 offset;
954 dma_addr_t io_req_base_phys;
955 u8 *io_req_base;
956
957
958 fusion = instance->ctrl_context;
959
960 if (megasas_alloc_request_fusion(instance))
961 goto fail_exit;
962
963 if (instance->is_rdpq) {
964 if (megasas_alloc_rdpq_fusion(instance))
965 goto fail_exit;
966 } else
967 if (megasas_alloc_reply_fusion(instance))
968 goto fail_exit;
969
970 if (megasas_alloc_cmdlist_fusion(instance))
971 goto fail_exit;
972
973 dev_info(&instance->pdev->dev, "Configured max firmware commands: %d\n",
974 instance->max_fw_cmds);
975
976 /* The first 256 bytes (SMID 0) is not used. Don't add to the cmd list */
977 io_req_base = fusion->io_request_frames + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
978 io_req_base_phys = fusion->io_request_frames_phys + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
979
980 /*
981 * Add all the commands to command pool (fusion->cmd_pool)
982 */
983
984 /* SMID 0 is reserved. Set SMID/index from 1 */
985 for (i = 0; i < instance->max_mpt_cmds; i++) {
986 cmd = fusion->cmd_list[i];
987 offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i;
988 memset(cmd, 0, sizeof(struct megasas_cmd_fusion));
989 cmd->index = i + 1;
990 cmd->scmd = NULL;
991 cmd->sync_cmd_idx =
992 (i >= instance->max_scsi_cmds && i < instance->max_fw_cmds) ?
993 (i - instance->max_scsi_cmds) :
994 (u32)ULONG_MAX; /* Set to Invalid */
995 cmd->instance = instance;
996 cmd->io_request =
997 (struct MPI2_RAID_SCSI_IO_REQUEST *)
998 (io_req_base + offset);
999 memset(cmd->io_request, 0,
1000 sizeof(struct MPI2_RAID_SCSI_IO_REQUEST));
1001 cmd->io_request_phys_addr = io_req_base_phys + offset;
1002 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
1003 }
1004
1005 if (megasas_create_sg_sense_fusion(instance))
1006 goto fail_exit;
1007
1008 return 0;
1009
1010 fail_exit:
1011 megasas_free_cmds_fusion(instance);
1012 return -ENOMEM;
1013 }
1014
1015 /**
1016 * wait_and_poll - Issues a polling command
1017 * @instance: Adapter soft state
1018 * @cmd: Command packet to be issued
1019 *
1020 * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
1021 */
1022 int
1023 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
1024 int seconds)
1025 {
1026 int i;
1027 struct megasas_header *frame_hdr = &cmd->frame->hdr;
1028 u32 status_reg;
1029
1030 u32 msecs = seconds * 1000;
1031
1032 /*
1033 * Wait for cmd_status to change
1034 */
1035 for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) {
1036 rmb();
1037 msleep(20);
1038 if (!(i % 5000)) {
1039 status_reg = instance->instancet->read_fw_status_reg(instance)
1040 & MFI_STATE_MASK;
1041 if (status_reg == MFI_STATE_FAULT)
1042 break;
1043 }
1044 }
1045
1046 if (frame_hdr->cmd_status == MFI_STAT_INVALID_STATUS)
1047 return DCMD_TIMEOUT;
1048 else if (frame_hdr->cmd_status == MFI_STAT_OK)
1049 return DCMD_SUCCESS;
1050 else
1051 return DCMD_FAILED;
1052 }
1053
1054 /**
1055 * megasas_ioc_init_fusion - Initializes the FW
1056 * @instance: Adapter soft state
1057 *
1058 * Issues the IOC Init cmd
1059 */
1060 int
1061 megasas_ioc_init_fusion(struct megasas_instance *instance)
1062 {
1063 struct megasas_init_frame *init_frame;
1064 struct MPI2_IOC_INIT_REQUEST *IOCInitMessage = NULL;
1065 dma_addr_t ioc_init_handle;
1066 struct megasas_cmd *cmd;
1067 u8 ret, cur_rdpq_mode;
1068 struct fusion_context *fusion;
1069 union MEGASAS_REQUEST_DESCRIPTOR_UNION req_desc;
1070 int i;
1071 struct megasas_header *frame_hdr;
1072 const char *sys_info;
1073 MFI_CAPABILITIES *drv_ops;
1074 u32 scratch_pad_1;
1075 ktime_t time;
1076 bool cur_fw_64bit_dma_capable;
1077 bool cur_intr_coalescing;
1078
1079 fusion = instance->ctrl_context;
1080
1081 ioc_init_handle = fusion->ioc_init_request_phys;
1082 IOCInitMessage = fusion->ioc_init_request;
1083
1084 cmd = fusion->ioc_init_cmd;
1085
1086 scratch_pad_1 = megasas_readl
1087 (instance, &instance->reg_set->outbound_scratch_pad_1);
1088
1089 cur_rdpq_mode = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ? 1 : 0;
1090
1091 if (instance->adapter_type == INVADER_SERIES) {
1092 cur_fw_64bit_dma_capable =
1093 (scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET) ? true : false;
1094
1095 if (instance->consistent_mask_64bit && !cur_fw_64bit_dma_capable) {
1096 dev_err(&instance->pdev->dev, "Driver was operating on 64bit "
1097 "DMA mask, but upcoming FW does not support 64bit DMA mask\n");
1098 megaraid_sas_kill_hba(instance);
1099 ret = 1;
1100 goto fail_fw_init;
1101 }
1102 }
1103
1104 if (instance->is_rdpq && !cur_rdpq_mode) {
1105 dev_err(&instance->pdev->dev, "Firmware downgrade *NOT SUPPORTED*"
1106 " from RDPQ mode to non RDPQ mode\n");
1107 ret = 1;
1108 goto fail_fw_init;
1109 }
1110
1111 cur_intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ?
1112 true : false;
1113
1114 if ((instance->low_latency_index_start ==
1115 MR_HIGH_IOPS_QUEUE_COUNT) && cur_intr_coalescing)
1116 instance->perf_mode = MR_BALANCED_PERF_MODE;
1117
1118 dev_info(&instance->pdev->dev, "Performance mode :%s\n",
1119 MEGASAS_PERF_MODE_2STR(instance->perf_mode));
1120
1121 instance->fw_sync_cache_support = (scratch_pad_1 &
1122 MR_CAN_HANDLE_SYNC_CACHE_OFFSET) ? 1 : 0;
1123 dev_info(&instance->pdev->dev, "FW supports sync cache\t: %s\n",
1124 instance->fw_sync_cache_support ? "Yes" : "No");
1125
1126 memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST));
1127
1128 IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT;
1129 IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER;
1130 IOCInitMessage->MsgVersion = cpu_to_le16(MPI2_VERSION);
1131 IOCInitMessage->HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION);
1132 IOCInitMessage->SystemRequestFrameSize = cpu_to_le16(MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4);
1133
1134 IOCInitMessage->ReplyDescriptorPostQueueDepth = cpu_to_le16(fusion->reply_q_depth);
1135 IOCInitMessage->ReplyDescriptorPostQueueAddress = instance->is_rdpq ?
1136 cpu_to_le64(fusion->rdpq_phys) :
1137 cpu_to_le64(fusion->reply_frames_desc_phys[0]);
1138 IOCInitMessage->MsgFlags = instance->is_rdpq ?
1139 MPI2_IOCINIT_MSGFLAG_RDPQ_ARRAY_MODE : 0;
1140 IOCInitMessage->SystemRequestFrameBaseAddress = cpu_to_le64(fusion->io_request_frames_phys);
1141 IOCInitMessage->SenseBufferAddressHigh = cpu_to_le32(upper_32_bits(fusion->sense_phys_addr));
1142 IOCInitMessage->HostMSIxVectors = instance->msix_vectors;
1143 IOCInitMessage->HostPageSize = MR_DEFAULT_NVME_PAGE_SHIFT;
1144
1145 time = ktime_get_real();
1146 /* Convert to milliseconds as per FW requirement */
1147 IOCInitMessage->TimeStamp = cpu_to_le64(ktime_to_ms(time));
1148
1149 init_frame = (struct megasas_init_frame *)cmd->frame;
1150 memset(init_frame, 0, IOC_INIT_FRAME_SIZE);
1151
1152 frame_hdr = &cmd->frame->hdr;
1153 frame_hdr->cmd_status = 0xFF;
1154 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
1155
1156 init_frame->cmd = MFI_CMD_INIT;
1157 init_frame->cmd_status = 0xFF;
1158
1159 drv_ops = (MFI_CAPABILITIES *) &(init_frame->driver_operations);
1160
1161 /* driver support Extended MSIX */
1162 if (instance->adapter_type >= INVADER_SERIES)
1163 drv_ops->mfi_capabilities.support_additional_msix = 1;
1164 /* driver supports HA / Remote LUN over Fast Path interface */
1165 drv_ops->mfi_capabilities.support_fp_remote_lun = 1;
1166
1167 drv_ops->mfi_capabilities.support_max_255lds = 1;
1168 drv_ops->mfi_capabilities.support_ndrive_r1_lb = 1;
1169 drv_ops->mfi_capabilities.security_protocol_cmds_fw = 1;
1170
1171 if (instance->max_chain_frame_sz > MEGASAS_CHAIN_FRAME_SZ_MIN)
1172 drv_ops->mfi_capabilities.support_ext_io_size = 1;
1173
1174 drv_ops->mfi_capabilities.support_fp_rlbypass = 1;
1175 if (!dual_qdepth_disable)
1176 drv_ops->mfi_capabilities.support_ext_queue_depth = 1;
1177
1178 drv_ops->mfi_capabilities.support_qd_throttling = 1;
1179 drv_ops->mfi_capabilities.support_pd_map_target_id = 1;
1180 drv_ops->mfi_capabilities.support_nvme_passthru = 1;
1181 drv_ops->mfi_capabilities.support_fw_exposed_dev_list = 1;
1182
1183 if (instance->consistent_mask_64bit)
1184 drv_ops->mfi_capabilities.support_64bit_mode = 1;
1185
1186 /* Convert capability to LE32 */
1187 cpu_to_le32s((u32 *)&init_frame->driver_operations.mfi_capabilities);
1188
1189 sys_info = dmi_get_system_info(DMI_PRODUCT_UUID);
1190 if (instance->system_info_buf && sys_info) {
1191 memcpy(instance->system_info_buf->systemId, sys_info,
1192 strlen(sys_info) > 64 ? 64 : strlen(sys_info));
1193 instance->system_info_buf->systemIdLength =
1194 strlen(sys_info) > 64 ? 64 : strlen(sys_info);
1195 init_frame->system_info_lo = cpu_to_le32(lower_32_bits(instance->system_info_h));
1196 init_frame->system_info_hi = cpu_to_le32(upper_32_bits(instance->system_info_h));
1197 }
1198
1199 init_frame->queue_info_new_phys_addr_hi =
1200 cpu_to_le32(upper_32_bits(ioc_init_handle));
1201 init_frame->queue_info_new_phys_addr_lo =
1202 cpu_to_le32(lower_32_bits(ioc_init_handle));
1203 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct MPI2_IOC_INIT_REQUEST));
1204
1205 /*
1206 * Each bit in replyqueue_mask represents one group of MSI-x vectors
1207 * (each group has 8 vectors)
1208 */
1209 switch (instance->perf_mode) {
1210 case MR_BALANCED_PERF_MODE:
1211 init_frame->replyqueue_mask =
1212 cpu_to_le16(~(~0 << instance->low_latency_index_start/8));
1213 break;
1214 case MR_IOPS_PERF_MODE:
1215 init_frame->replyqueue_mask =
1216 cpu_to_le16(~(~0 << instance->msix_vectors/8));
1217 break;
1218 }
1219
1220
1221 req_desc.u.low = cpu_to_le32(lower_32_bits(cmd->frame_phys_addr));
1222 req_desc.u.high = cpu_to_le32(upper_32_bits(cmd->frame_phys_addr));
1223 req_desc.MFAIo.RequestFlags =
1224 (MEGASAS_REQ_DESCRIPT_FLAGS_MFA <<
1225 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1226
1227 /*
1228 * disable the intr before firing the init frame
1229 */
1230 instance->instancet->disable_intr(instance);
1231
1232 for (i = 0; i < (10 * 1000); i += 20) {
1233 if (megasas_readl(instance, &instance->reg_set->doorbell) & 1)
1234 msleep(20);
1235 else
1236 break;
1237 }
1238
1239 /* For AERO also, IOC_INIT requires 64 bit descriptor write */
1240 megasas_write_64bit_req_desc(instance, &req_desc);
1241
1242 wait_and_poll(instance, cmd, MFI_IO_TIMEOUT_SECS);
1243
1244 frame_hdr = &cmd->frame->hdr;
1245 if (frame_hdr->cmd_status != 0) {
1246 ret = 1;
1247 goto fail_fw_init;
1248 }
1249
1250 if (instance->adapter_type >= AERO_SERIES) {
1251 scratch_pad_1 = megasas_readl
1252 (instance, &instance->reg_set->outbound_scratch_pad_1);
1253
1254 instance->atomic_desc_support =
1255 (scratch_pad_1 & MR_ATOMIC_DESCRIPTOR_SUPPORT_OFFSET) ? 1 : 0;
1256
1257 dev_info(&instance->pdev->dev, "FW supports atomic descriptor\t: %s\n",
1258 instance->atomic_desc_support ? "Yes" : "No");
1259 }
1260
1261 return 0;
1262
1263 fail_fw_init:
1264 dev_err(&instance->pdev->dev,
1265 "Init cmd return status FAILED for SCSI host %d\n",
1266 instance->host->host_no);
1267
1268 return ret;
1269 }
1270
1271 /**
1272 * megasas_sync_pd_seq_num - JBOD SEQ MAP
1273 * @instance: Adapter soft state
1274 * @pend: set to 1, if it is pended jbod map.
1275 *
1276 * Issue Jbod map to the firmware. If it is pended command,
1277 * issue command and return. If it is first instance of jbod map
1278 * issue and receive command.
1279 */
1280 int
1281 megasas_sync_pd_seq_num(struct megasas_instance *instance, bool pend) {
1282 int ret = 0;
1283 size_t pd_seq_map_sz;
1284 struct megasas_cmd *cmd;
1285 struct megasas_dcmd_frame *dcmd;
1286 struct fusion_context *fusion = instance->ctrl_context;
1287 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1288 dma_addr_t pd_seq_h;
1289
1290 pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id & 1)];
1291 pd_seq_h = fusion->pd_seq_phys[(instance->pd_seq_map_id & 1)];
1292 pd_seq_map_sz = struct_size(pd_sync, seq, MAX_PHYSICAL_DEVICES - 1);
1293
1294 cmd = megasas_get_cmd(instance);
1295 if (!cmd) {
1296 dev_err(&instance->pdev->dev,
1297 "Could not get mfi cmd. Fail from %s %d\n",
1298 __func__, __LINE__);
1299 return -ENOMEM;
1300 }
1301
1302 dcmd = &cmd->frame->dcmd;
1303
1304 memset(pd_sync, 0, pd_seq_map_sz);
1305 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1306
1307 if (pend) {
1308 dcmd->mbox.b[0] = MEGASAS_DCMD_MBOX_PEND_FLAG;
1309 dcmd->flags = MFI_FRAME_DIR_WRITE;
1310 instance->jbod_seq_cmd = cmd;
1311 } else {
1312 dcmd->flags = MFI_FRAME_DIR_READ;
1313 }
1314
1315 dcmd->cmd = MFI_CMD_DCMD;
1316 dcmd->cmd_status = 0xFF;
1317 dcmd->sge_count = 1;
1318 dcmd->timeout = 0;
1319 dcmd->pad_0 = 0;
1320 dcmd->data_xfer_len = cpu_to_le32(pd_seq_map_sz);
1321 dcmd->opcode = cpu_to_le32(MR_DCMD_SYSTEM_PD_MAP_GET_INFO);
1322
1323 megasas_set_dma_settings(instance, dcmd, pd_seq_h, pd_seq_map_sz);
1324
1325 if (pend) {
1326 instance->instancet->issue_dcmd(instance, cmd);
1327 return 0;
1328 }
1329
1330 /* Below code is only for non pended DCMD */
1331 if (!instance->mask_interrupts)
1332 ret = megasas_issue_blocked_cmd(instance, cmd,
1333 MFI_IO_TIMEOUT_SECS);
1334 else
1335 ret = megasas_issue_polled(instance, cmd);
1336
1337 if (le32_to_cpu(pd_sync->count) > MAX_PHYSICAL_DEVICES) {
1338 dev_warn(&instance->pdev->dev,
1339 "driver supports max %d JBOD, but FW reports %d\n",
1340 MAX_PHYSICAL_DEVICES, le32_to_cpu(pd_sync->count));
1341 ret = -EINVAL;
1342 }
1343
1344 if (ret == DCMD_TIMEOUT)
1345 dev_warn(&instance->pdev->dev,
1346 "%s DCMD timed out, continue without JBOD sequence map\n",
1347 __func__);
1348
1349 if (ret == DCMD_SUCCESS)
1350 instance->pd_seq_map_id++;
1351
1352 megasas_return_cmd(instance, cmd);
1353 return ret;
1354 }
1355
1356 /*
1357 * megasas_get_ld_map_info - Returns FW's ld_map structure
1358 * @instance: Adapter soft state
1359 * @pend: Pend the command or not
1360 * Issues an internal command (DCMD) to get the FW's controller PD
1361 * list structure. This information is mainly used to find out SYSTEM
1362 * supported by the FW.
1363 * dcmd.mbox value setting for MR_DCMD_LD_MAP_GET_INFO
1364 * dcmd.mbox.b[0] - number of LDs being sync'd
1365 * dcmd.mbox.b[1] - 0 - complete command immediately.
1366 * - 1 - pend till config change
1367 * dcmd.mbox.b[2] - 0 - supports max 64 lds and uses legacy MR_FW_RAID_MAP
1368 * - 1 - supports max MAX_LOGICAL_DRIVES_EXT lds and
1369 * uses extended struct MR_FW_RAID_MAP_EXT
1370 */
1371 static int
1372 megasas_get_ld_map_info(struct megasas_instance *instance)
1373 {
1374 int ret = 0;
1375 struct megasas_cmd *cmd;
1376 struct megasas_dcmd_frame *dcmd;
1377 void *ci;
1378 dma_addr_t ci_h = 0;
1379 u32 size_map_info;
1380 struct fusion_context *fusion;
1381
1382 cmd = megasas_get_cmd(instance);
1383
1384 if (!cmd) {
1385 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for map info\n");
1386 return -ENOMEM;
1387 }
1388
1389 fusion = instance->ctrl_context;
1390
1391 if (!fusion) {
1392 megasas_return_cmd(instance, cmd);
1393 return -ENXIO;
1394 }
1395
1396 dcmd = &cmd->frame->dcmd;
1397
1398 size_map_info = fusion->current_map_sz;
1399
1400 ci = (void *) fusion->ld_map[(instance->map_id & 1)];
1401 ci_h = fusion->ld_map_phys[(instance->map_id & 1)];
1402
1403 if (!ci) {
1404 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ld_map_info\n");
1405 megasas_return_cmd(instance, cmd);
1406 return -ENOMEM;
1407 }
1408
1409 memset(ci, 0, fusion->max_map_sz);
1410 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1411 dcmd->cmd = MFI_CMD_DCMD;
1412 dcmd->cmd_status = 0xFF;
1413 dcmd->sge_count = 1;
1414 dcmd->flags = MFI_FRAME_DIR_READ;
1415 dcmd->timeout = 0;
1416 dcmd->pad_0 = 0;
1417 dcmd->data_xfer_len = cpu_to_le32(size_map_info);
1418 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
1419
1420 megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info);
1421
1422 if (!instance->mask_interrupts)
1423 ret = megasas_issue_blocked_cmd(instance, cmd,
1424 MFI_IO_TIMEOUT_SECS);
1425 else
1426 ret = megasas_issue_polled(instance, cmd);
1427
1428 if (ret == DCMD_TIMEOUT)
1429 dev_warn(&instance->pdev->dev,
1430 "%s DCMD timed out, RAID map is disabled\n",
1431 __func__);
1432
1433 megasas_return_cmd(instance, cmd);
1434
1435 return ret;
1436 }
1437
1438 u8
1439 megasas_get_map_info(struct megasas_instance *instance)
1440 {
1441 struct fusion_context *fusion = instance->ctrl_context;
1442
1443 fusion->fast_path_io = 0;
1444 if (!megasas_get_ld_map_info(instance)) {
1445 if (MR_ValidateMapInfo(instance, instance->map_id)) {
1446 fusion->fast_path_io = 1;
1447 return 0;
1448 }
1449 }
1450 return 1;
1451 }
1452
1453 /*
1454 * megasas_sync_map_info - Returns FW's ld_map structure
1455 * @instance: Adapter soft state
1456 *
1457 * Issues an internal command (DCMD) to get the FW's controller PD
1458 * list structure. This information is mainly used to find out SYSTEM
1459 * supported by the FW.
1460 */
1461 int
1462 megasas_sync_map_info(struct megasas_instance *instance)
1463 {
1464 int i;
1465 struct megasas_cmd *cmd;
1466 struct megasas_dcmd_frame *dcmd;
1467 u16 num_lds;
1468 struct fusion_context *fusion;
1469 struct MR_LD_TARGET_SYNC *ci = NULL;
1470 struct MR_DRV_RAID_MAP_ALL *map;
1471 struct MR_LD_RAID *raid;
1472 struct MR_LD_TARGET_SYNC *ld_sync;
1473 dma_addr_t ci_h = 0;
1474 u32 size_map_info;
1475
1476 cmd = megasas_get_cmd(instance);
1477
1478 if (!cmd) {
1479 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for sync info\n");
1480 return -ENOMEM;
1481 }
1482
1483 fusion = instance->ctrl_context;
1484
1485 if (!fusion) {
1486 megasas_return_cmd(instance, cmd);
1487 return 1;
1488 }
1489
1490 map = fusion->ld_drv_map[instance->map_id & 1];
1491
1492 num_lds = le16_to_cpu(map->raidMap.ldCount);
1493
1494 dcmd = &cmd->frame->dcmd;
1495
1496 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1497
1498 ci = (struct MR_LD_TARGET_SYNC *)
1499 fusion->ld_map[(instance->map_id - 1) & 1];
1500 memset(ci, 0, fusion->max_map_sz);
1501
1502 ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1];
1503
1504 ld_sync = (struct MR_LD_TARGET_SYNC *)ci;
1505
1506 for (i = 0; i < num_lds; i++, ld_sync++) {
1507 raid = MR_LdRaidGet(i, map);
1508 ld_sync->targetId = MR_GetLDTgtId(i, map);
1509 ld_sync->seqNum = raid->seqNum;
1510 }
1511
1512 size_map_info = fusion->current_map_sz;
1513
1514 dcmd->cmd = MFI_CMD_DCMD;
1515 dcmd->cmd_status = 0xFF;
1516 dcmd->sge_count = 1;
1517 dcmd->flags = MFI_FRAME_DIR_WRITE;
1518 dcmd->timeout = 0;
1519 dcmd->pad_0 = 0;
1520 dcmd->data_xfer_len = cpu_to_le32(size_map_info);
1521 dcmd->mbox.b[0] = num_lds;
1522 dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG;
1523 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
1524
1525 megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info);
1526
1527 instance->map_update_cmd = cmd;
1528
1529 instance->instancet->issue_dcmd(instance, cmd);
1530
1531 return 0;
1532 }
1533
1534 /*
1535 * meagasas_display_intel_branding - Display branding string
1536 * @instance: per adapter object
1537 *
1538 * Return nothing.
1539 */
1540 static void
1541 megasas_display_intel_branding(struct megasas_instance *instance)
1542 {
1543 if (instance->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL)
1544 return;
1545
1546 switch (instance->pdev->device) {
1547 case PCI_DEVICE_ID_LSI_INVADER:
1548 switch (instance->pdev->subsystem_device) {
1549 case MEGARAID_INTEL_RS3DC080_SSDID:
1550 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1551 instance->host->host_no,
1552 MEGARAID_INTEL_RS3DC080_BRANDING);
1553 break;
1554 case MEGARAID_INTEL_RS3DC040_SSDID:
1555 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1556 instance->host->host_no,
1557 MEGARAID_INTEL_RS3DC040_BRANDING);
1558 break;
1559 case MEGARAID_INTEL_RS3SC008_SSDID:
1560 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1561 instance->host->host_no,
1562 MEGARAID_INTEL_RS3SC008_BRANDING);
1563 break;
1564 case MEGARAID_INTEL_RS3MC044_SSDID:
1565 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1566 instance->host->host_no,
1567 MEGARAID_INTEL_RS3MC044_BRANDING);
1568 break;
1569 default:
1570 break;
1571 }
1572 break;
1573 case PCI_DEVICE_ID_LSI_FURY:
1574 switch (instance->pdev->subsystem_device) {
1575 case MEGARAID_INTEL_RS3WC080_SSDID:
1576 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1577 instance->host->host_no,
1578 MEGARAID_INTEL_RS3WC080_BRANDING);
1579 break;
1580 case MEGARAID_INTEL_RS3WC040_SSDID:
1581 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1582 instance->host->host_no,
1583 MEGARAID_INTEL_RS3WC040_BRANDING);
1584 break;
1585 default:
1586 break;
1587 }
1588 break;
1589 case PCI_DEVICE_ID_LSI_CUTLASS_52:
1590 case PCI_DEVICE_ID_LSI_CUTLASS_53:
1591 switch (instance->pdev->subsystem_device) {
1592 case MEGARAID_INTEL_RMS3BC160_SSDID:
1593 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1594 instance->host->host_no,
1595 MEGARAID_INTEL_RMS3BC160_BRANDING);
1596 break;
1597 default:
1598 break;
1599 }
1600 break;
1601 default:
1602 break;
1603 }
1604 }
1605
1606 /**
1607 * megasas_allocate_raid_maps - Allocate memory for RAID maps
1608 * @instance: Adapter soft state
1609 *
1610 * return: if success: return 0
1611 * failed: return -ENOMEM
1612 */
1613 static inline int megasas_allocate_raid_maps(struct megasas_instance *instance)
1614 {
1615 struct fusion_context *fusion;
1616 int i = 0;
1617
1618 fusion = instance->ctrl_context;
1619
1620 fusion->drv_map_pages = get_order(fusion->drv_map_sz);
1621
1622 for (i = 0; i < 2; i++) {
1623 fusion->ld_map[i] = NULL;
1624
1625 fusion->ld_drv_map[i] = (void *)
1626 __get_free_pages(__GFP_ZERO | GFP_KERNEL,
1627 fusion->drv_map_pages);
1628
1629 if (!fusion->ld_drv_map[i]) {
1630 fusion->ld_drv_map[i] = vzalloc(fusion->drv_map_sz);
1631
1632 if (!fusion->ld_drv_map[i]) {
1633 dev_err(&instance->pdev->dev,
1634 "Could not allocate memory for local map"
1635 " size requested: %d\n",
1636 fusion->drv_map_sz);
1637 goto ld_drv_map_alloc_fail;
1638 }
1639 }
1640 }
1641
1642 for (i = 0; i < 2; i++) {
1643 fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev,
1644 fusion->max_map_sz,
1645 &fusion->ld_map_phys[i],
1646 GFP_KERNEL);
1647 if (!fusion->ld_map[i]) {
1648 dev_err(&instance->pdev->dev,
1649 "Could not allocate memory for map info %s:%d\n",
1650 __func__, __LINE__);
1651 goto ld_map_alloc_fail;
1652 }
1653 }
1654
1655 return 0;
1656
1657 ld_map_alloc_fail:
1658 for (i = 0; i < 2; i++) {
1659 if (fusion->ld_map[i])
1660 dma_free_coherent(&instance->pdev->dev,
1661 fusion->max_map_sz,
1662 fusion->ld_map[i],
1663 fusion->ld_map_phys[i]);
1664 }
1665
1666 ld_drv_map_alloc_fail:
1667 for (i = 0; i < 2; i++) {
1668 if (fusion->ld_drv_map[i]) {
1669 if (is_vmalloc_addr(fusion->ld_drv_map[i]))
1670 vfree(fusion->ld_drv_map[i]);
1671 else
1672 free_pages((ulong)fusion->ld_drv_map[i],
1673 fusion->drv_map_pages);
1674 }
1675 }
1676
1677 return -ENOMEM;
1678 }
1679
1680 /**
1681 * megasas_configure_queue_sizes - Calculate size of request desc queue,
1682 * reply desc queue,
1683 * IO request frame queue, set can_queue.
1684 * @instance: Adapter soft state
1685 * @return: void
1686 */
1687 static inline
1688 void megasas_configure_queue_sizes(struct megasas_instance *instance)
1689 {
1690 struct fusion_context *fusion;
1691 u16 max_cmd;
1692
1693 fusion = instance->ctrl_context;
1694 max_cmd = instance->max_fw_cmds;
1695
1696 if (instance->adapter_type >= VENTURA_SERIES)
1697 instance->max_mpt_cmds = instance->max_fw_cmds * RAID_1_PEER_CMDS;
1698 else
1699 instance->max_mpt_cmds = instance->max_fw_cmds;
1700
1701 instance->max_scsi_cmds = instance->max_fw_cmds - instance->max_mfi_cmds;
1702 instance->cur_can_queue = instance->max_scsi_cmds;
1703 instance->host->can_queue = instance->cur_can_queue;
1704
1705 fusion->reply_q_depth = 2 * ((max_cmd + 1 + 15) / 16) * 16;
1706
1707 fusion->request_alloc_sz = sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *
1708 instance->max_mpt_cmds;
1709 fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION) *
1710 (fusion->reply_q_depth);
1711 fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE +
1712 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE
1713 * (instance->max_mpt_cmds + 1)); /* Extra 1 for SMID 0 */
1714 }
1715
1716 static int megasas_alloc_ioc_init_frame(struct megasas_instance *instance)
1717 {
1718 struct fusion_context *fusion;
1719 struct megasas_cmd *cmd;
1720
1721 fusion = instance->ctrl_context;
1722
1723 cmd = kzalloc(sizeof(struct megasas_cmd), GFP_KERNEL);
1724
1725 if (!cmd) {
1726 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n",
1727 __func__, __LINE__);
1728 return -ENOMEM;
1729 }
1730
1731 cmd->frame = dma_alloc_coherent(&instance->pdev->dev,
1732 IOC_INIT_FRAME_SIZE,
1733 &cmd->frame_phys_addr, GFP_KERNEL);
1734
1735 if (!cmd->frame) {
1736 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n",
1737 __func__, __LINE__);
1738 kfree(cmd);
1739 return -ENOMEM;
1740 }
1741
1742 fusion->ioc_init_cmd = cmd;
1743 return 0;
1744 }
1745
1746 /**
1747 * megasas_free_ioc_init_cmd - Free IOC INIT command frame
1748 * @instance: Adapter soft state
1749 */
1750 static inline void megasas_free_ioc_init_cmd(struct megasas_instance *instance)
1751 {
1752 struct fusion_context *fusion;
1753
1754 fusion = instance->ctrl_context;
1755
1756 if (fusion->ioc_init_cmd && fusion->ioc_init_cmd->frame)
1757 dma_free_coherent(&instance->pdev->dev,
1758 IOC_INIT_FRAME_SIZE,
1759 fusion->ioc_init_cmd->frame,
1760 fusion->ioc_init_cmd->frame_phys_addr);
1761
1762 kfree(fusion->ioc_init_cmd);
1763 }
1764
1765 /**
1766 * megasas_init_adapter_fusion - Initializes the FW
1767 * @instance: Adapter soft state
1768 *
1769 * This is the main function for initializing firmware.
1770 */
1771 static u32
1772 megasas_init_adapter_fusion(struct megasas_instance *instance)
1773 {
1774 struct fusion_context *fusion;
1775 u32 scratch_pad_1;
1776 int i = 0, count;
1777 u32 status_reg;
1778
1779 fusion = instance->ctrl_context;
1780
1781 megasas_fusion_update_can_queue(instance, PROBE_CONTEXT);
1782
1783 /*
1784 * Only Driver's internal DCMDs and IOCTL DCMDs needs to have MFI frames
1785 */
1786 instance->max_mfi_cmds =
1787 MEGASAS_FUSION_INTERNAL_CMDS + MEGASAS_FUSION_IOCTL_CMDS;
1788
1789 megasas_configure_queue_sizes(instance);
1790
1791 scratch_pad_1 = megasas_readl(instance,
1792 &instance->reg_set->outbound_scratch_pad_1);
1793 /* If scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK is set,
1794 * Firmware support extended IO chain frame which is 4 times more than
1795 * legacy Firmware.
1796 * Legacy Firmware - Frame size is (8 * 128) = 1K
1797 * 1M IO Firmware - Frame size is (8 * 128 * 4) = 4K
1798 */
1799 if (scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK)
1800 instance->max_chain_frame_sz =
1801 ((scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_MASK) >>
1802 MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_1MB_IO;
1803 else
1804 instance->max_chain_frame_sz =
1805 ((scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_MASK) >>
1806 MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_256K_IO;
1807
1808 if (instance->max_chain_frame_sz < MEGASAS_CHAIN_FRAME_SZ_MIN) {
1809 dev_warn(&instance->pdev->dev, "frame size %d invalid, fall back to legacy max frame size %d\n",
1810 instance->max_chain_frame_sz,
1811 MEGASAS_CHAIN_FRAME_SZ_MIN);
1812 instance->max_chain_frame_sz = MEGASAS_CHAIN_FRAME_SZ_MIN;
1813 }
1814
1815 fusion->max_sge_in_main_msg =
1816 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE
1817 - offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16;
1818
1819 fusion->max_sge_in_chain =
1820 instance->max_chain_frame_sz
1821 / sizeof(union MPI2_SGE_IO_UNION);
1822
1823 instance->max_num_sge =
1824 rounddown_pow_of_two(fusion->max_sge_in_main_msg
1825 + fusion->max_sge_in_chain - 2);
1826
1827 /* Used for pass thru MFI frame (DCMD) */
1828 fusion->chain_offset_mfi_pthru =
1829 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16;
1830
1831 fusion->chain_offset_io_request =
1832 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
1833 sizeof(union MPI2_SGE_IO_UNION))/16;
1834
1835 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
1836 for (i = 0 ; i < count; i++)
1837 fusion->last_reply_idx[i] = 0;
1838
1839 /*
1840 * For fusion adapters, 3 commands for IOCTL and 8 commands
1841 * for driver's internal DCMDs.
1842 */
1843 instance->max_scsi_cmds = instance->max_fw_cmds -
1844 (MEGASAS_FUSION_INTERNAL_CMDS +
1845 MEGASAS_FUSION_IOCTL_CMDS);
1846 sema_init(&instance->ioctl_sem, MEGASAS_FUSION_IOCTL_CMDS);
1847
1848 if (megasas_alloc_ioc_init_frame(instance))
1849 return 1;
1850
1851 /*
1852 * Allocate memory for descriptors
1853 * Create a pool of commands
1854 */
1855 if (megasas_alloc_cmds(instance))
1856 goto fail_alloc_mfi_cmds;
1857 if (megasas_alloc_cmds_fusion(instance))
1858 goto fail_alloc_cmds;
1859
1860 if (megasas_ioc_init_fusion(instance)) {
1861 status_reg = instance->instancet->read_fw_status_reg(instance);
1862 if (((status_reg & MFI_STATE_MASK) == MFI_STATE_FAULT) &&
1863 (status_reg & MFI_RESET_ADAPTER)) {
1864 /* Do a chip reset and then retry IOC INIT once */
1865 if (megasas_adp_reset_wait_for_ready
1866 (instance, true, 0) == FAILED)
1867 goto fail_ioc_init;
1868
1869 if (megasas_ioc_init_fusion(instance))
1870 goto fail_ioc_init;
1871 } else {
1872 goto fail_ioc_init;
1873 }
1874 }
1875
1876 megasas_display_intel_branding(instance);
1877 if (megasas_get_ctrl_info(instance)) {
1878 dev_err(&instance->pdev->dev,
1879 "Could not get controller info. Fail from %s %d\n",
1880 __func__, __LINE__);
1881 goto fail_ioc_init;
1882 }
1883
1884 instance->flag_ieee = 1;
1885 instance->r1_ldio_hint_default = MR_R1_LDIO_PIGGYBACK_DEFAULT;
1886 instance->threshold_reply_count = instance->max_fw_cmds / 4;
1887 fusion->fast_path_io = 0;
1888
1889 if (megasas_allocate_raid_maps(instance))
1890 goto fail_ioc_init;
1891
1892 if (!megasas_get_map_info(instance))
1893 megasas_sync_map_info(instance);
1894
1895 return 0;
1896
1897 fail_ioc_init:
1898 megasas_free_cmds_fusion(instance);
1899 fail_alloc_cmds:
1900 megasas_free_cmds(instance);
1901 fail_alloc_mfi_cmds:
1902 megasas_free_ioc_init_cmd(instance);
1903 return 1;
1904 }
1905
1906 /**
1907 * megasas_fault_detect_work - Worker function of
1908 * FW fault handling workqueue.
1909 */
1910 static void
1911 megasas_fault_detect_work(struct work_struct *work)
1912 {
1913 struct megasas_instance *instance =
1914 container_of(work, struct megasas_instance,
1915 fw_fault_work.work);
1916 u32 fw_state, dma_state, status;
1917
1918 /* Check the fw state */
1919 fw_state = instance->instancet->read_fw_status_reg(instance) &
1920 MFI_STATE_MASK;
1921
1922 if (fw_state == MFI_STATE_FAULT) {
1923 dma_state = instance->instancet->read_fw_status_reg(instance) &
1924 MFI_STATE_DMADONE;
1925 /* Start collecting crash, if DMA bit is done */
1926 if (instance->crash_dump_drv_support &&
1927 instance->crash_dump_app_support && dma_state) {
1928 megasas_fusion_crash_dump(instance);
1929 } else {
1930 if (instance->unload == 0) {
1931 status = megasas_reset_fusion(instance->host, 0);
1932 if (status != SUCCESS) {
1933 dev_err(&instance->pdev->dev,
1934 "Failed from %s %d, do not re-arm timer\n",
1935 __func__, __LINE__);
1936 return;
1937 }
1938 }
1939 }
1940 }
1941
1942 if (instance->fw_fault_work_q)
1943 queue_delayed_work(instance->fw_fault_work_q,
1944 &instance->fw_fault_work,
1945 msecs_to_jiffies(MEGASAS_WATCHDOG_THREAD_INTERVAL));
1946 }
1947
1948 int
1949 megasas_fusion_start_watchdog(struct megasas_instance *instance)
1950 {
1951 /* Check if the Fault WQ is already started */
1952 if (instance->fw_fault_work_q)
1953 return SUCCESS;
1954
1955 INIT_DELAYED_WORK(&instance->fw_fault_work, megasas_fault_detect_work);
1956
1957 snprintf(instance->fault_handler_work_q_name,
1958 sizeof(instance->fault_handler_work_q_name),
1959 "poll_megasas%d_status", instance->host->host_no);
1960
1961 instance->fw_fault_work_q =
1962 create_singlethread_workqueue(instance->fault_handler_work_q_name);
1963 if (!instance->fw_fault_work_q) {
1964 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1965 __func__, __LINE__);
1966 return FAILED;
1967 }
1968
1969 queue_delayed_work(instance->fw_fault_work_q,
1970 &instance->fw_fault_work,
1971 msecs_to_jiffies(MEGASAS_WATCHDOG_THREAD_INTERVAL));
1972
1973 return SUCCESS;
1974 }
1975
1976 void
1977 megasas_fusion_stop_watchdog(struct megasas_instance *instance)
1978 {
1979 struct workqueue_struct *wq;
1980
1981 if (instance->fw_fault_work_q) {
1982 wq = instance->fw_fault_work_q;
1983 instance->fw_fault_work_q = NULL;
1984 if (!cancel_delayed_work_sync(&instance->fw_fault_work))
1985 flush_workqueue(wq);
1986 destroy_workqueue(wq);
1987 }
1988 }
1989
1990 /**
1991 * map_cmd_status - Maps FW cmd status to OS cmd status
1992 * @cmd : Pointer to cmd
1993 * @status : status of cmd returned by FW
1994 * @ext_status : ext status of cmd returned by FW
1995 */
1996
1997 static void
1998 map_cmd_status(struct fusion_context *fusion,
1999 struct scsi_cmnd *scmd, u8 status, u8 ext_status,
2000 u32 data_length, u8 *sense)
2001 {
2002 u8 cmd_type;
2003 int resid;
2004
2005 cmd_type = megasas_cmd_type(scmd);
2006 switch (status) {
2007
2008 case MFI_STAT_OK:
2009 scmd->result = DID_OK << 16;
2010 break;
2011
2012 case MFI_STAT_SCSI_IO_FAILED:
2013 case MFI_STAT_LD_INIT_IN_PROGRESS:
2014 scmd->result = (DID_ERROR << 16) | ext_status;
2015 break;
2016
2017 case MFI_STAT_SCSI_DONE_WITH_ERROR:
2018
2019 scmd->result = (DID_OK << 16) | ext_status;
2020 if (ext_status == SAM_STAT_CHECK_CONDITION) {
2021 memset(scmd->sense_buffer, 0,
2022 SCSI_SENSE_BUFFERSIZE);
2023 memcpy(scmd->sense_buffer, sense,
2024 SCSI_SENSE_BUFFERSIZE);
2025 scmd->result |= DRIVER_SENSE << 24;
2026 }
2027
2028 /*
2029 * If the IO request is partially completed, then MR FW will
2030 * update "io_request->DataLength" field with actual number of
2031 * bytes transferred.Driver will set residual bytes count in
2032 * SCSI command structure.
2033 */
2034 resid = (scsi_bufflen(scmd) - data_length);
2035 scsi_set_resid(scmd, resid);
2036
2037 if (resid &&
2038 ((cmd_type == READ_WRITE_LDIO) ||
2039 (cmd_type == READ_WRITE_SYSPDIO)))
2040 scmd_printk(KERN_INFO, scmd, "BRCM Debug mfi stat 0x%x, data len"
2041 " requested/completed 0x%x/0x%x\n",
2042 status, scsi_bufflen(scmd), data_length);
2043 break;
2044
2045 case MFI_STAT_LD_OFFLINE:
2046 case MFI_STAT_DEVICE_NOT_FOUND:
2047 scmd->result = DID_BAD_TARGET << 16;
2048 break;
2049 case MFI_STAT_CONFIG_SEQ_MISMATCH:
2050 scmd->result = DID_IMM_RETRY << 16;
2051 break;
2052 default:
2053 scmd->result = DID_ERROR << 16;
2054 break;
2055 }
2056 }
2057
2058 /**
2059 * megasas_is_prp_possible -
2060 * Checks if native NVMe PRPs can be built for the IO
2061 *
2062 * @instance: Adapter soft state
2063 * @scmd: SCSI command from the mid-layer
2064 * @sge_count: scatter gather element count.
2065 *
2066 * Returns: true: PRPs can be built
2067 * false: IEEE SGLs needs to be built
2068 */
2069 static bool
2070 megasas_is_prp_possible(struct megasas_instance *instance,
2071 struct scsi_cmnd *scmd, int sge_count)
2072 {
2073 int i;
2074 u32 data_length = 0;
2075 struct scatterlist *sg_scmd;
2076 bool build_prp = false;
2077 u32 mr_nvme_pg_size;
2078
2079 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
2080 MR_DEFAULT_NVME_PAGE_SIZE);
2081 data_length = scsi_bufflen(scmd);
2082 sg_scmd = scsi_sglist(scmd);
2083
2084 /*
2085 * NVMe uses one PRP for each page (or part of a page)
2086 * look at the data length - if 4 pages or less then IEEE is OK
2087 * if > 5 pages then we need to build a native SGL
2088 * if > 4 and <= 5 pages, then check physical address of 1st SG entry
2089 * if this first size in the page is >= the residual beyond 4 pages
2090 * then use IEEE, otherwise use native SGL
2091 */
2092
2093 if (data_length > (mr_nvme_pg_size * 5)) {
2094 build_prp = true;
2095 } else if ((data_length > (mr_nvme_pg_size * 4)) &&
2096 (data_length <= (mr_nvme_pg_size * 5))) {
2097 /* check if 1st SG entry size is < residual beyond 4 pages */
2098 if (sg_dma_len(sg_scmd) < (data_length - (mr_nvme_pg_size * 4)))
2099 build_prp = true;
2100 }
2101
2102 /*
2103 * Below code detects gaps/holes in IO data buffers.
2104 * What does holes/gaps mean?
2105 * Any SGE except first one in a SGL starts at non NVME page size
2106 * aligned address OR Any SGE except last one in a SGL ends at
2107 * non NVME page size boundary.
2108 *
2109 * Driver has already informed block layer by setting boundary rules for
2110 * bio merging done at NVME page size boundary calling kernel API
2111 * blk_queue_virt_boundary inside slave_config.
2112 * Still there is possibility of IO coming with holes to driver because of
2113 * IO merging done by IO scheduler.
2114 *
2115 * With SCSI BLK MQ enabled, there will be no IO with holes as there is no
2116 * IO scheduling so no IO merging.
2117 *
2118 * With SCSI BLK MQ disabled, IO scheduler may attempt to merge IOs and
2119 * then sending IOs with holes.
2120 *
2121 * Though driver can request block layer to disable IO merging by calling-
2122 * blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue) but
2123 * user may tune sysfs parameter- nomerges again to 0 or 1.
2124 *
2125 * If in future IO scheduling is enabled with SCSI BLK MQ,
2126 * this algorithm to detect holes will be required in driver
2127 * for SCSI BLK MQ enabled case as well.
2128 *
2129 *
2130 */
2131 scsi_for_each_sg(scmd, sg_scmd, sge_count, i) {
2132 if ((i != 0) && (i != (sge_count - 1))) {
2133 if (mega_mod64(sg_dma_len(sg_scmd), mr_nvme_pg_size) ||
2134 mega_mod64(sg_dma_address(sg_scmd),
2135 mr_nvme_pg_size)) {
2136 build_prp = false;
2137 break;
2138 }
2139 }
2140
2141 if ((sge_count > 1) && (i == 0)) {
2142 if ((mega_mod64((sg_dma_address(sg_scmd) +
2143 sg_dma_len(sg_scmd)),
2144 mr_nvme_pg_size))) {
2145 build_prp = false;
2146 break;
2147 }
2148 }
2149
2150 if ((sge_count > 1) && (i == (sge_count - 1))) {
2151 if (mega_mod64(sg_dma_address(sg_scmd),
2152 mr_nvme_pg_size)) {
2153 build_prp = false;
2154 break;
2155 }
2156 }
2157 }
2158
2159 return build_prp;
2160 }
2161
2162 /**
2163 * megasas_make_prp_nvme -
2164 * Prepare PRPs(Physical Region Page)- SGLs specific to NVMe drives only
2165 *
2166 * @instance: Adapter soft state
2167 * @scmd: SCSI command from the mid-layer
2168 * @sgl_ptr: SGL to be filled in
2169 * @cmd: Fusion command frame
2170 * @sge_count: scatter gather element count.
2171 *
2172 * Returns: true: PRPs are built
2173 * false: IEEE SGLs needs to be built
2174 */
2175 static bool
2176 megasas_make_prp_nvme(struct megasas_instance *instance, struct scsi_cmnd *scmd,
2177 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
2178 struct megasas_cmd_fusion *cmd, int sge_count)
2179 {
2180 int sge_len, offset, num_prp_in_chain = 0;
2181 struct MPI25_IEEE_SGE_CHAIN64 *main_chain_element, *ptr_first_sgl;
2182 u64 *ptr_sgl;
2183 dma_addr_t ptr_sgl_phys;
2184 u64 sge_addr;
2185 u32 page_mask, page_mask_result;
2186 struct scatterlist *sg_scmd;
2187 u32 first_prp_len;
2188 bool build_prp = false;
2189 int data_len = scsi_bufflen(scmd);
2190 u32 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
2191 MR_DEFAULT_NVME_PAGE_SIZE);
2192
2193 build_prp = megasas_is_prp_possible(instance, scmd, sge_count);
2194
2195 if (!build_prp)
2196 return false;
2197
2198 /*
2199 * Nvme has a very convoluted prp format. One prp is required
2200 * for each page or partial page. Driver need to split up OS sg_list
2201 * entries if it is longer than one page or cross a page
2202 * boundary. Driver also have to insert a PRP list pointer entry as
2203 * the last entry in each physical page of the PRP list.
2204 *
2205 * NOTE: The first PRP "entry" is actually placed in the first
2206 * SGL entry in the main message as IEEE 64 format. The 2nd
2207 * entry in the main message is the chain element, and the rest
2208 * of the PRP entries are built in the contiguous pcie buffer.
2209 */
2210 page_mask = mr_nvme_pg_size - 1;
2211 ptr_sgl = (u64 *)cmd->sg_frame;
2212 ptr_sgl_phys = cmd->sg_frame_phys_addr;
2213 memset(ptr_sgl, 0, instance->max_chain_frame_sz);
2214
2215 /* Build chain frame element which holds all prps except first*/
2216 main_chain_element = (struct MPI25_IEEE_SGE_CHAIN64 *)
2217 ((u8 *)sgl_ptr + sizeof(struct MPI25_IEEE_SGE_CHAIN64));
2218
2219 main_chain_element->Address = cpu_to_le64(ptr_sgl_phys);
2220 main_chain_element->NextChainOffset = 0;
2221 main_chain_element->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
2222 IEEE_SGE_FLAGS_SYSTEM_ADDR |
2223 MPI26_IEEE_SGE_FLAGS_NSF_NVME_PRP;
2224
2225 /* Build first prp, sge need not to be page aligned*/
2226 ptr_first_sgl = sgl_ptr;
2227 sg_scmd = scsi_sglist(scmd);
2228 sge_addr = sg_dma_address(sg_scmd);
2229 sge_len = sg_dma_len(sg_scmd);
2230
2231 offset = (u32)(sge_addr & page_mask);
2232 first_prp_len = mr_nvme_pg_size - offset;
2233
2234 ptr_first_sgl->Address = cpu_to_le64(sge_addr);
2235 ptr_first_sgl->Length = cpu_to_le32(first_prp_len);
2236
2237 data_len -= first_prp_len;
2238
2239 if (sge_len > first_prp_len) {
2240 sge_addr += first_prp_len;
2241 sge_len -= first_prp_len;
2242 } else if (sge_len == first_prp_len) {
2243 sg_scmd = sg_next(sg_scmd);
2244 sge_addr = sg_dma_address(sg_scmd);
2245 sge_len = sg_dma_len(sg_scmd);
2246 }
2247
2248 for (;;) {
2249 offset = (u32)(sge_addr & page_mask);
2250
2251 /* Put PRP pointer due to page boundary*/
2252 page_mask_result = (uintptr_t)(ptr_sgl + 1) & page_mask;
2253 if (unlikely(!page_mask_result)) {
2254 scmd_printk(KERN_NOTICE,
2255 scmd, "page boundary ptr_sgl: 0x%p\n",
2256 ptr_sgl);
2257 ptr_sgl_phys += 8;
2258 *ptr_sgl = cpu_to_le64(ptr_sgl_phys);
2259 ptr_sgl++;
2260 num_prp_in_chain++;
2261 }
2262
2263 *ptr_sgl = cpu_to_le64(sge_addr);
2264 ptr_sgl++;
2265 ptr_sgl_phys += 8;
2266 num_prp_in_chain++;
2267
2268 sge_addr += mr_nvme_pg_size;
2269 sge_len -= mr_nvme_pg_size;
2270 data_len -= mr_nvme_pg_size;
2271
2272 if (data_len <= 0)
2273 break;
2274
2275 if (sge_len > 0)
2276 continue;
2277
2278 sg_scmd = sg_next(sg_scmd);
2279 sge_addr = sg_dma_address(sg_scmd);
2280 sge_len = sg_dma_len(sg_scmd);
2281 }
2282
2283 main_chain_element->Length =
2284 cpu_to_le32(num_prp_in_chain * sizeof(u64));
2285
2286 return build_prp;
2287 }
2288
2289 /**
2290 * megasas_make_sgl_fusion - Prepares 32-bit SGL
2291 * @instance: Adapter soft state
2292 * @scp: SCSI command from the mid-layer
2293 * @sgl_ptr: SGL to be filled in
2294 * @cmd: cmd we are working on
2295 * @sge_count sge count
2296 *
2297 */
2298 static void
2299 megasas_make_sgl_fusion(struct megasas_instance *instance,
2300 struct scsi_cmnd *scp,
2301 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
2302 struct megasas_cmd_fusion *cmd, int sge_count)
2303 {
2304 int i, sg_processed;
2305 struct scatterlist *os_sgl;
2306 struct fusion_context *fusion;
2307
2308 fusion = instance->ctrl_context;
2309
2310 if (instance->adapter_type >= INVADER_SERIES) {
2311 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr;
2312 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
2313 sgl_ptr_end->Flags = 0;
2314 }
2315
2316 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
2317 sgl_ptr->Length = cpu_to_le32(sg_dma_len(os_sgl));
2318 sgl_ptr->Address = cpu_to_le64(sg_dma_address(os_sgl));
2319 sgl_ptr->Flags = 0;
2320 if (instance->adapter_type >= INVADER_SERIES)
2321 if (i == sge_count - 1)
2322 sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST;
2323 sgl_ptr++;
2324 sg_processed = i + 1;
2325
2326 if ((sg_processed == (fusion->max_sge_in_main_msg - 1)) &&
2327 (sge_count > fusion->max_sge_in_main_msg)) {
2328
2329 struct MPI25_IEEE_SGE_CHAIN64 *sg_chain;
2330 if (instance->adapter_type >= INVADER_SERIES) {
2331 if ((le16_to_cpu(cmd->io_request->IoFlags) &
2332 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) !=
2333 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH)
2334 cmd->io_request->ChainOffset =
2335 fusion->
2336 chain_offset_io_request;
2337 else
2338 cmd->io_request->ChainOffset = 0;
2339 } else
2340 cmd->io_request->ChainOffset =
2341 fusion->chain_offset_io_request;
2342
2343 sg_chain = sgl_ptr;
2344 /* Prepare chain element */
2345 sg_chain->NextChainOffset = 0;
2346 if (instance->adapter_type >= INVADER_SERIES)
2347 sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT;
2348 else
2349 sg_chain->Flags =
2350 (IEEE_SGE_FLAGS_CHAIN_ELEMENT |
2351 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR);
2352 sg_chain->Length = cpu_to_le32((sizeof(union MPI2_SGE_IO_UNION) * (sge_count - sg_processed)));
2353 sg_chain->Address = cpu_to_le64(cmd->sg_frame_phys_addr);
2354
2355 sgl_ptr =
2356 (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame;
2357 memset(sgl_ptr, 0, instance->max_chain_frame_sz);
2358 }
2359 }
2360 }
2361
2362 /**
2363 * megasas_make_sgl - Build Scatter Gather List(SGLs)
2364 * @scp: SCSI command pointer
2365 * @instance: Soft instance of controller
2366 * @cmd: Fusion command pointer
2367 *
2368 * This function will build sgls based on device type.
2369 * For nvme drives, there is different way of building sgls in nvme native
2370 * format- PRPs(Physical Region Page).
2371 *
2372 * Returns the number of sg lists actually used, zero if the sg lists
2373 * is NULL, or -ENOMEM if the mapping failed
2374 */
2375 static
2376 int megasas_make_sgl(struct megasas_instance *instance, struct scsi_cmnd *scp,
2377 struct megasas_cmd_fusion *cmd)
2378 {
2379 int sge_count;
2380 bool build_prp = false;
2381 struct MPI25_IEEE_SGE_CHAIN64 *sgl_chain64;
2382
2383 sge_count = scsi_dma_map(scp);
2384
2385 if ((sge_count > instance->max_num_sge) || (sge_count <= 0))
2386 return sge_count;
2387
2388 sgl_chain64 = (struct MPI25_IEEE_SGE_CHAIN64 *)&cmd->io_request->SGL;
2389 if ((le16_to_cpu(cmd->io_request->IoFlags) &
2390 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) &&
2391 (cmd->pd_interface == NVME_PD))
2392 build_prp = megasas_make_prp_nvme(instance, scp, sgl_chain64,
2393 cmd, sge_count);
2394
2395 if (!build_prp)
2396 megasas_make_sgl_fusion(instance, scp, sgl_chain64,
2397 cmd, sge_count);
2398
2399 return sge_count;
2400 }
2401
2402 /**
2403 * megasas_set_pd_lba - Sets PD LBA
2404 * @cdb: CDB
2405 * @cdb_len: cdb length
2406 * @start_blk: Start block of IO
2407 *
2408 * Used to set the PD LBA in CDB for FP IOs
2409 */
2410 static void
2411 megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len,
2412 struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp,
2413 struct MR_DRV_RAID_MAP_ALL *local_map_ptr, u32 ref_tag)
2414 {
2415 struct MR_LD_RAID *raid;
2416 u16 ld;
2417 u64 start_blk = io_info->pdBlock;
2418 u8 *cdb = io_request->CDB.CDB32;
2419 u32 num_blocks = io_info->numBlocks;
2420 u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0;
2421
2422 /* Check if T10 PI (DIF) is enabled for this LD */
2423 ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr);
2424 raid = MR_LdRaidGet(ld, local_map_ptr);
2425 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) {
2426 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2427 cdb[0] = MEGASAS_SCSI_VARIABLE_LENGTH_CMD;
2428 cdb[7] = MEGASAS_SCSI_ADDL_CDB_LEN;
2429
2430 if (scp->sc_data_direction == DMA_FROM_DEVICE)
2431 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32;
2432 else
2433 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32;
2434 cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL;
2435
2436 /* LBA */
2437 cdb[12] = (u8)((start_blk >> 56) & 0xff);
2438 cdb[13] = (u8)((start_blk >> 48) & 0xff);
2439 cdb[14] = (u8)((start_blk >> 40) & 0xff);
2440 cdb[15] = (u8)((start_blk >> 32) & 0xff);
2441 cdb[16] = (u8)((start_blk >> 24) & 0xff);
2442 cdb[17] = (u8)((start_blk >> 16) & 0xff);
2443 cdb[18] = (u8)((start_blk >> 8) & 0xff);
2444 cdb[19] = (u8)(start_blk & 0xff);
2445
2446 /* Logical block reference tag */
2447 io_request->CDB.EEDP32.PrimaryReferenceTag =
2448 cpu_to_be32(ref_tag);
2449 io_request->CDB.EEDP32.PrimaryApplicationTagMask = cpu_to_be16(0xffff);
2450 io_request->IoFlags = cpu_to_le16(32); /* Specify 32-byte cdb */
2451
2452 /* Transfer length */
2453 cdb[28] = (u8)((num_blocks >> 24) & 0xff);
2454 cdb[29] = (u8)((num_blocks >> 16) & 0xff);
2455 cdb[30] = (u8)((num_blocks >> 8) & 0xff);
2456 cdb[31] = (u8)(num_blocks & 0xff);
2457
2458 /* set SCSI IO EEDPFlags */
2459 if (scp->sc_data_direction == DMA_FROM_DEVICE) {
2460 io_request->EEDPFlags = cpu_to_le16(
2461 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
2462 MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
2463 MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP |
2464 MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG |
2465 MPI25_SCSIIO_EEDPFLAGS_DO_NOT_DISABLE_MODE |
2466 MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD);
2467 } else {
2468 io_request->EEDPFlags = cpu_to_le16(
2469 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
2470 MPI2_SCSIIO_EEDPFLAGS_INSERT_OP);
2471 }
2472 io_request->Control |= cpu_to_le32((0x4 << 26));
2473 io_request->EEDPBlockSize = cpu_to_le32(scp->device->sector_size);
2474 } else {
2475 /* Some drives don't support 16/12 byte CDB's, convert to 10 */
2476 if (((cdb_len == 12) || (cdb_len == 16)) &&
2477 (start_blk <= 0xffffffff)) {
2478 if (cdb_len == 16) {
2479 opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10;
2480 flagvals = cdb[1];
2481 groupnum = cdb[14];
2482 control = cdb[15];
2483 } else {
2484 opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10;
2485 flagvals = cdb[1];
2486 groupnum = cdb[10];
2487 control = cdb[11];
2488 }
2489
2490 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2491
2492 cdb[0] = opcode;
2493 cdb[1] = flagvals;
2494 cdb[6] = groupnum;
2495 cdb[9] = control;
2496
2497 /* Transfer length */
2498 cdb[8] = (u8)(num_blocks & 0xff);
2499 cdb[7] = (u8)((num_blocks >> 8) & 0xff);
2500
2501 io_request->IoFlags = cpu_to_le16(10); /* Specify 10-byte cdb */
2502 cdb_len = 10;
2503 } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) {
2504 /* Convert to 16 byte CDB for large LBA's */
2505 switch (cdb_len) {
2506 case 6:
2507 opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16;
2508 control = cdb[5];
2509 break;
2510 case 10:
2511 opcode =
2512 cdb[0] == READ_10 ? READ_16 : WRITE_16;
2513 flagvals = cdb[1];
2514 groupnum = cdb[6];
2515 control = cdb[9];
2516 break;
2517 case 12:
2518 opcode =
2519 cdb[0] == READ_12 ? READ_16 : WRITE_16;
2520 flagvals = cdb[1];
2521 groupnum = cdb[10];
2522 control = cdb[11];
2523 break;
2524 }
2525
2526 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2527
2528 cdb[0] = opcode;
2529 cdb[1] = flagvals;
2530 cdb[14] = groupnum;
2531 cdb[15] = control;
2532
2533 /* Transfer length */
2534 cdb[13] = (u8)(num_blocks & 0xff);
2535 cdb[12] = (u8)((num_blocks >> 8) & 0xff);
2536 cdb[11] = (u8)((num_blocks >> 16) & 0xff);
2537 cdb[10] = (u8)((num_blocks >> 24) & 0xff);
2538
2539 io_request->IoFlags = cpu_to_le16(16); /* Specify 16-byte cdb */
2540 cdb_len = 16;
2541 }
2542
2543 /* Normal case, just load LBA here */
2544 switch (cdb_len) {
2545 case 6:
2546 {
2547 u8 val = cdb[1] & 0xE0;
2548 cdb[3] = (u8)(start_blk & 0xff);
2549 cdb[2] = (u8)((start_blk >> 8) & 0xff);
2550 cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f);
2551 break;
2552 }
2553 case 10:
2554 cdb[5] = (u8)(start_blk & 0xff);
2555 cdb[4] = (u8)((start_blk >> 8) & 0xff);
2556 cdb[3] = (u8)((start_blk >> 16) & 0xff);
2557 cdb[2] = (u8)((start_blk >> 24) & 0xff);
2558 break;
2559 case 12:
2560 cdb[5] = (u8)(start_blk & 0xff);
2561 cdb[4] = (u8)((start_blk >> 8) & 0xff);
2562 cdb[3] = (u8)((start_blk >> 16) & 0xff);
2563 cdb[2] = (u8)((start_blk >> 24) & 0xff);
2564 break;
2565 case 16:
2566 cdb[9] = (u8)(start_blk & 0xff);
2567 cdb[8] = (u8)((start_blk >> 8) & 0xff);
2568 cdb[7] = (u8)((start_blk >> 16) & 0xff);
2569 cdb[6] = (u8)((start_blk >> 24) & 0xff);
2570 cdb[5] = (u8)((start_blk >> 32) & 0xff);
2571 cdb[4] = (u8)((start_blk >> 40) & 0xff);
2572 cdb[3] = (u8)((start_blk >> 48) & 0xff);
2573 cdb[2] = (u8)((start_blk >> 56) & 0xff);
2574 break;
2575 }
2576 }
2577 }
2578
2579 /**
2580 * megasas_stream_detect - stream detection on read and and write IOs
2581 * @instance: Adapter soft state
2582 * @cmd: Command to be prepared
2583 * @io_info: IO Request info
2584 *
2585 */
2586
2587 /** stream detection on read and and write IOs */
2588 static void megasas_stream_detect(struct megasas_instance *instance,
2589 struct megasas_cmd_fusion *cmd,
2590 struct IO_REQUEST_INFO *io_info)
2591 {
2592 struct fusion_context *fusion = instance->ctrl_context;
2593 u32 device_id = io_info->ldTgtId;
2594 struct LD_STREAM_DETECT *current_ld_sd
2595 = fusion->stream_detect_by_ld[device_id];
2596 u32 *track_stream = &current_ld_sd->mru_bit_map, stream_num;
2597 u32 shifted_values, unshifted_values;
2598 u32 index_value_mask, shifted_values_mask;
2599 int i;
2600 bool is_read_ahead = false;
2601 struct STREAM_DETECT *current_sd;
2602 /* find possible stream */
2603 for (i = 0; i < MAX_STREAMS_TRACKED; ++i) {
2604 stream_num = (*track_stream >>
2605 (i * BITS_PER_INDEX_STREAM)) &
2606 STREAM_MASK;
2607 current_sd = &current_ld_sd->stream_track[stream_num];
2608 /* if we found a stream, update the raid
2609 * context and also update the mruBitMap
2610 */
2611 /* boundary condition */
2612 if ((current_sd->next_seq_lba) &&
2613 (io_info->ldStartBlock >= current_sd->next_seq_lba) &&
2614 (io_info->ldStartBlock <= (current_sd->next_seq_lba + 32)) &&
2615 (current_sd->is_read == io_info->isRead)) {
2616
2617 if ((io_info->ldStartBlock != current_sd->next_seq_lba) &&
2618 ((!io_info->isRead) || (!is_read_ahead)))
2619 /*
2620 * Once the API availible we need to change this.
2621 * At this point we are not allowing any gap
2622 */
2623 continue;
2624
2625 SET_STREAM_DETECTED(cmd->io_request->RaidContext.raid_context_g35);
2626 current_sd->next_seq_lba =
2627 io_info->ldStartBlock + io_info->numBlocks;
2628 /*
2629 * update the mruBitMap LRU
2630 */
2631 shifted_values_mask =
2632 (1 << i * BITS_PER_INDEX_STREAM) - 1;
2633 shifted_values = ((*track_stream & shifted_values_mask)
2634 << BITS_PER_INDEX_STREAM);
2635 index_value_mask =
2636 STREAM_MASK << i * BITS_PER_INDEX_STREAM;
2637 unshifted_values =
2638 *track_stream & ~(shifted_values_mask |
2639 index_value_mask);
2640 *track_stream =
2641 unshifted_values | shifted_values | stream_num;
2642 return;
2643 }
2644 }
2645 /*
2646 * if we did not find any stream, create a new one
2647 * from the least recently used
2648 */
2649 stream_num = (*track_stream >>
2650 ((MAX_STREAMS_TRACKED - 1) * BITS_PER_INDEX_STREAM)) &
2651 STREAM_MASK;
2652 current_sd = &current_ld_sd->stream_track[stream_num];
2653 current_sd->is_read = io_info->isRead;
2654 current_sd->next_seq_lba = io_info->ldStartBlock + io_info->numBlocks;
2655 *track_stream = (((*track_stream & ZERO_LAST_STREAM) << 4) | stream_num);
2656 return;
2657 }
2658
2659 /**
2660 * megasas_set_raidflag_cpu_affinity - This function sets the cpu
2661 * affinity (cpu of the controller) and raid_flags in the raid context
2662 * based on IO type.
2663 *
2664 * @praid_context: IO RAID context
2665 * @raid: LD raid map
2666 * @fp_possible: Is fast path possible?
2667 * @is_read: Is read IO?
2668 *
2669 */
2670 static void
2671 megasas_set_raidflag_cpu_affinity(struct fusion_context *fusion,
2672 union RAID_CONTEXT_UNION *praid_context,
2673 struct MR_LD_RAID *raid, bool fp_possible,
2674 u8 is_read, u32 scsi_buff_len)
2675 {
2676 u8 cpu_sel = MR_RAID_CTX_CPUSEL_0;
2677 struct RAID_CONTEXT_G35 *rctx_g35;
2678
2679 rctx_g35 = &praid_context->raid_context_g35;
2680 if (fp_possible) {
2681 if (is_read) {
2682 if ((raid->cpuAffinity.pdRead.cpu0) &&
2683 (raid->cpuAffinity.pdRead.cpu1))
2684 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2685 else if (raid->cpuAffinity.pdRead.cpu1)
2686 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2687 } else {
2688 if ((raid->cpuAffinity.pdWrite.cpu0) &&
2689 (raid->cpuAffinity.pdWrite.cpu1))
2690 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2691 else if (raid->cpuAffinity.pdWrite.cpu1)
2692 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2693 /* Fast path cache by pass capable R0/R1 VD */
2694 if ((raid->level <= 1) &&
2695 (raid->capability.fp_cache_bypass_capable)) {
2696 rctx_g35->routing_flags |=
2697 (1 << MR_RAID_CTX_ROUTINGFLAGS_SLD_SHIFT);
2698 rctx_g35->raid_flags =
2699 (MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS
2700 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT);
2701 }
2702 }
2703 } else {
2704 if (is_read) {
2705 if ((raid->cpuAffinity.ldRead.cpu0) &&
2706 (raid->cpuAffinity.ldRead.cpu1))
2707 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2708 else if (raid->cpuAffinity.ldRead.cpu1)
2709 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2710 } else {
2711 if ((raid->cpuAffinity.ldWrite.cpu0) &&
2712 (raid->cpuAffinity.ldWrite.cpu1))
2713 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2714 else if (raid->cpuAffinity.ldWrite.cpu1)
2715 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2716
2717 if (is_stream_detected(rctx_g35) &&
2718 ((raid->level == 5) || (raid->level == 6)) &&
2719 (raid->writeMode == MR_RL_WRITE_THROUGH_MODE) &&
2720 (cpu_sel == MR_RAID_CTX_CPUSEL_FCFS))
2721 cpu_sel = MR_RAID_CTX_CPUSEL_0;
2722 }
2723 }
2724
2725 rctx_g35->routing_flags |=
2726 (cpu_sel << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT);
2727
2728 /* Always give priority to MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT
2729 * vs MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS.
2730 * IO Subtype is not bitmap.
2731 */
2732 if ((fusion->pcie_bw_limitation) && (raid->level == 1) && (!is_read) &&
2733 (scsi_buff_len > MR_LARGE_IO_MIN_SIZE)) {
2734 praid_context->raid_context_g35.raid_flags =
2735 (MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT
2736 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT);
2737 }
2738 }
2739
2740 /**
2741 * megasas_build_ldio_fusion - Prepares IOs to devices
2742 * @instance: Adapter soft state
2743 * @scp: SCSI command
2744 * @cmd: Command to be prepared
2745 *
2746 * Prepares the io_request and chain elements (sg_frame) for IO
2747 * The IO can be for PD (Fast Path) or LD
2748 */
2749 static void
2750 megasas_build_ldio_fusion(struct megasas_instance *instance,
2751 struct scsi_cmnd *scp,
2752 struct megasas_cmd_fusion *cmd)
2753 {
2754 bool fp_possible;
2755 u16 ld;
2756 u32 start_lba_lo, start_lba_hi, device_id, datalength = 0;
2757 u32 scsi_buff_len;
2758 struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
2759 struct IO_REQUEST_INFO io_info;
2760 struct fusion_context *fusion;
2761 struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
2762 u8 *raidLUN;
2763 unsigned long spinlock_flags;
2764 struct MR_LD_RAID *raid = NULL;
2765 struct MR_PRIV_DEVICE *mrdev_priv;
2766 struct RAID_CONTEXT *rctx;
2767 struct RAID_CONTEXT_G35 *rctx_g35;
2768
2769 device_id = MEGASAS_DEV_INDEX(scp);
2770
2771 fusion = instance->ctrl_context;
2772
2773 io_request = cmd->io_request;
2774 rctx = &io_request->RaidContext.raid_context;
2775 rctx_g35 = &io_request->RaidContext.raid_context_g35;
2776
2777 rctx->virtual_disk_tgt_id = cpu_to_le16(device_id);
2778 rctx->status = 0;
2779 rctx->ex_status = 0;
2780
2781 start_lba_lo = 0;
2782 start_lba_hi = 0;
2783 fp_possible = false;
2784
2785 /*
2786 * 6-byte READ(0x08) or WRITE(0x0A) cdb
2787 */
2788 if (scp->cmd_len == 6) {
2789 datalength = (u32) scp->cmnd[4];
2790 start_lba_lo = ((u32) scp->cmnd[1] << 16) |
2791 ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
2792
2793 start_lba_lo &= 0x1FFFFF;
2794 }
2795
2796 /*
2797 * 10-byte READ(0x28) or WRITE(0x2A) cdb
2798 */
2799 else if (scp->cmd_len == 10) {
2800 datalength = (u32) scp->cmnd[8] |
2801 ((u32) scp->cmnd[7] << 8);
2802 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
2803 ((u32) scp->cmnd[3] << 16) |
2804 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2805 }
2806
2807 /*
2808 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
2809 */
2810 else if (scp->cmd_len == 12) {
2811 datalength = ((u32) scp->cmnd[6] << 24) |
2812 ((u32) scp->cmnd[7] << 16) |
2813 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
2814 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
2815 ((u32) scp->cmnd[3] << 16) |
2816 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2817 }
2818
2819 /*
2820 * 16-byte READ(0x88) or WRITE(0x8A) cdb
2821 */
2822 else if (scp->cmd_len == 16) {
2823 datalength = ((u32) scp->cmnd[10] << 24) |
2824 ((u32) scp->cmnd[11] << 16) |
2825 ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
2826 start_lba_lo = ((u32) scp->cmnd[6] << 24) |
2827 ((u32) scp->cmnd[7] << 16) |
2828 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
2829
2830 start_lba_hi = ((u32) scp->cmnd[2] << 24) |
2831 ((u32) scp->cmnd[3] << 16) |
2832 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2833 }
2834
2835 memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO));
2836 io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo;
2837 io_info.numBlocks = datalength;
2838 io_info.ldTgtId = device_id;
2839 io_info.r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
2840 scsi_buff_len = scsi_bufflen(scp);
2841 io_request->DataLength = cpu_to_le32(scsi_buff_len);
2842 io_info.data_arms = 1;
2843
2844 if (scp->sc_data_direction == DMA_FROM_DEVICE)
2845 io_info.isRead = 1;
2846
2847 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
2848 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
2849
2850 if (ld < instance->fw_supported_vd_count)
2851 raid = MR_LdRaidGet(ld, local_map_ptr);
2852
2853 if (!raid || (!fusion->fast_path_io)) {
2854 rctx->reg_lock_flags = 0;
2855 fp_possible = false;
2856 } else {
2857 if (MR_BuildRaidContext(instance, &io_info, rctx,
2858 local_map_ptr, &raidLUN))
2859 fp_possible = (io_info.fpOkForIo > 0) ? true : false;
2860 }
2861
2862 megasas_get_msix_index(instance, scp, cmd, io_info.data_arms);
2863
2864 if (instance->adapter_type >= VENTURA_SERIES) {
2865 /* FP for Optimal raid level 1.
2866 * All large RAID-1 writes (> 32 KiB, both WT and WB modes)
2867 * are built by the driver as LD I/Os.
2868 * All small RAID-1 WT writes (<= 32 KiB) are built as FP I/Os
2869 * (there is never a reason to process these as buffered writes)
2870 * All small RAID-1 WB writes (<= 32 KiB) are built as FP I/Os
2871 * with the SLD bit asserted.
2872 */
2873 if (io_info.r1_alt_dev_handle != MR_DEVHANDLE_INVALID) {
2874 mrdev_priv = scp->device->hostdata;
2875
2876 if (atomic_inc_return(&instance->fw_outstanding) >
2877 (instance->host->can_queue)) {
2878 fp_possible = false;
2879 atomic_dec(&instance->fw_outstanding);
2880 } else if (fusion->pcie_bw_limitation &&
2881 ((scsi_buff_len > MR_LARGE_IO_MIN_SIZE) ||
2882 (atomic_dec_if_positive(&mrdev_priv->r1_ldio_hint) > 0))) {
2883 fp_possible = false;
2884 atomic_dec(&instance->fw_outstanding);
2885 if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE)
2886 atomic_set(&mrdev_priv->r1_ldio_hint,
2887 instance->r1_ldio_hint_default);
2888 }
2889 }
2890
2891 if (!fp_possible ||
2892 (io_info.isRead && io_info.ra_capable)) {
2893 spin_lock_irqsave(&instance->stream_lock,
2894 spinlock_flags);
2895 megasas_stream_detect(instance, cmd, &io_info);
2896 spin_unlock_irqrestore(&instance->stream_lock,
2897 spinlock_flags);
2898 /* In ventura if stream detected for a read and it is
2899 * read ahead capable make this IO as LDIO
2900 */
2901 if (is_stream_detected(rctx_g35))
2902 fp_possible = false;
2903 }
2904
2905 /* If raid is NULL, set CPU affinity to default CPU0 */
2906 if (raid)
2907 megasas_set_raidflag_cpu_affinity(fusion, &io_request->RaidContext,
2908 raid, fp_possible, io_info.isRead,
2909 scsi_buff_len);
2910 else
2911 rctx_g35->routing_flags |=
2912 (MR_RAID_CTX_CPUSEL_0 << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT);
2913 }
2914
2915 if (fp_possible) {
2916 megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp,
2917 local_map_ptr, start_lba_lo);
2918 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
2919 cmd->request_desc->SCSIIO.RequestFlags =
2920 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO
2921 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2922 if (instance->adapter_type == INVADER_SERIES) {
2923 rctx->type = MPI2_TYPE_CUDA;
2924 rctx->nseg = 0x1;
2925 io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
2926 rctx->reg_lock_flags |=
2927 (MR_RL_FLAGS_GRANT_DESTINATION_CUDA |
2928 MR_RL_FLAGS_SEQ_NUM_ENABLE);
2929 } else if (instance->adapter_type >= VENTURA_SERIES) {
2930 rctx_g35->nseg_type |= (1 << RAID_CONTEXT_NSEG_SHIFT);
2931 rctx_g35->nseg_type |= (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
2932 rctx_g35->routing_flags |= (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
2933 io_request->IoFlags |=
2934 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
2935 }
2936 if (fusion->load_balance_info &&
2937 (fusion->load_balance_info[device_id].loadBalanceFlag) &&
2938 (io_info.isRead)) {
2939 io_info.devHandle =
2940 get_updated_dev_handle(instance,
2941 &fusion->load_balance_info[device_id],
2942 &io_info, local_map_ptr);
2943 scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG;
2944 cmd->pd_r1_lb = io_info.pd_after_lb;
2945 if (instance->adapter_type >= VENTURA_SERIES)
2946 rctx_g35->span_arm = io_info.span_arm;
2947 else
2948 rctx->span_arm = io_info.span_arm;
2949
2950 } else
2951 scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
2952
2953 if (instance->adapter_type >= VENTURA_SERIES)
2954 cmd->r1_alt_dev_handle = io_info.r1_alt_dev_handle;
2955 else
2956 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
2957
2958 if ((raidLUN[0] == 1) &&
2959 (local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].validHandles > 1)) {
2960 instance->dev_handle = !(instance->dev_handle);
2961 io_info.devHandle =
2962 local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].devHandle[instance->dev_handle];
2963 }
2964
2965 cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle;
2966 io_request->DevHandle = io_info.devHandle;
2967 cmd->pd_interface = io_info.pd_interface;
2968 /* populate the LUN field */
2969 memcpy(io_request->LUN, raidLUN, 8);
2970 } else {
2971 rctx->timeout_value =
2972 cpu_to_le16(local_map_ptr->raidMap.fpPdIoTimeoutSec);
2973 cmd->request_desc->SCSIIO.RequestFlags =
2974 (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO
2975 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2976 if (instance->adapter_type == INVADER_SERIES) {
2977 if (io_info.do_fp_rlbypass ||
2978 (rctx->reg_lock_flags == REGION_TYPE_UNUSED))
2979 cmd->request_desc->SCSIIO.RequestFlags =
2980 (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
2981 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2982 rctx->type = MPI2_TYPE_CUDA;
2983 rctx->reg_lock_flags |=
2984 (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 |
2985 MR_RL_FLAGS_SEQ_NUM_ENABLE);
2986 rctx->nseg = 0x1;
2987 } else if (instance->adapter_type >= VENTURA_SERIES) {
2988 rctx_g35->routing_flags |= (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
2989 rctx_g35->nseg_type |= (1 << RAID_CONTEXT_NSEG_SHIFT);
2990 rctx_g35->nseg_type |= (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
2991 }
2992 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
2993 io_request->DevHandle = cpu_to_le16(device_id);
2994
2995 } /* Not FP */
2996 }
2997
2998 /**
2999 * megasas_build_ld_nonrw_fusion - prepares non rw ios for virtual disk
3000 * @instance: Adapter soft state
3001 * @scp: SCSI command
3002 * @cmd: Command to be prepared
3003 *
3004 * Prepares the io_request frame for non-rw io cmds for vd.
3005 */
3006 static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance,
3007 struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd)
3008 {
3009 u32 device_id;
3010 struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
3011 u16 ld;
3012 struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
3013 struct fusion_context *fusion = instance->ctrl_context;
3014 u8 span, physArm;
3015 __le16 devHandle;
3016 u32 arRef, pd;
3017 struct MR_LD_RAID *raid;
3018 struct RAID_CONTEXT *pRAID_Context;
3019 u8 fp_possible = 1;
3020
3021 io_request = cmd->io_request;
3022 device_id = MEGASAS_DEV_INDEX(scmd);
3023 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
3024 io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
3025 /* get RAID_Context pointer */
3026 pRAID_Context = &io_request->RaidContext.raid_context;
3027 /* Check with FW team */
3028 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
3029 pRAID_Context->reg_lock_row_lba = 0;
3030 pRAID_Context->reg_lock_length = 0;
3031
3032 if (fusion->fast_path_io && (
3033 device_id < instance->fw_supported_vd_count)) {
3034
3035 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
3036 if (ld >= instance->fw_supported_vd_count - 1)
3037 fp_possible = 0;
3038 else {
3039 raid = MR_LdRaidGet(ld, local_map_ptr);
3040 if (!(raid->capability.fpNonRWCapable))
3041 fp_possible = 0;
3042 }
3043 } else
3044 fp_possible = 0;
3045
3046 if (!fp_possible) {
3047 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
3048 io_request->DevHandle = cpu_to_le16(device_id);
3049 io_request->LUN[1] = scmd->device->lun;
3050 pRAID_Context->timeout_value =
3051 cpu_to_le16 (scmd->request->timeout / HZ);
3052 cmd->request_desc->SCSIIO.RequestFlags =
3053 (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
3054 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3055 } else {
3056
3057 /* set RAID context values */
3058 pRAID_Context->config_seq_num = raid->seqNum;
3059 if (instance->adapter_type < VENTURA_SERIES)
3060 pRAID_Context->reg_lock_flags = REGION_TYPE_SHARED_READ;
3061 pRAID_Context->timeout_value =
3062 cpu_to_le16(raid->fpIoTimeoutForLd);
3063
3064 /* get the DevHandle for the PD (since this is
3065 fpNonRWCapable, this is a single disk RAID0) */
3066 span = physArm = 0;
3067 arRef = MR_LdSpanArrayGet(ld, span, local_map_ptr);
3068 pd = MR_ArPdGet(arRef, physArm, local_map_ptr);
3069 devHandle = MR_PdDevHandleGet(pd, local_map_ptr);
3070
3071 /* build request descriptor */
3072 cmd->request_desc->SCSIIO.RequestFlags =
3073 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
3074 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3075 cmd->request_desc->SCSIIO.DevHandle = devHandle;
3076
3077 /* populate the LUN field */
3078 memcpy(io_request->LUN, raid->LUN, 8);
3079
3080 /* build the raidScsiIO structure */
3081 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
3082 io_request->DevHandle = devHandle;
3083 }
3084 }
3085
3086 /**
3087 * megasas_build_syspd_fusion - prepares rw/non-rw ios for syspd
3088 * @instance: Adapter soft state
3089 * @scp: SCSI command
3090 * @cmd: Command to be prepared
3091 * @fp_possible: parameter to detect fast path or firmware path io.
3092 *
3093 * Prepares the io_request frame for rw/non-rw io cmds for syspds
3094 */
3095 static void
3096 megasas_build_syspd_fusion(struct megasas_instance *instance,
3097 struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd,
3098 bool fp_possible)
3099 {
3100 u32 device_id;
3101 struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
3102 u16 pd_index = 0;
3103 u16 os_timeout_value;
3104 u16 timeout_limit;
3105 struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
3106 struct RAID_CONTEXT *pRAID_Context;
3107 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
3108 struct MR_PRIV_DEVICE *mr_device_priv_data;
3109 struct fusion_context *fusion = instance->ctrl_context;
3110 pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id - 1) & 1];
3111
3112 device_id = MEGASAS_DEV_INDEX(scmd);
3113 pd_index = MEGASAS_PD_INDEX(scmd);
3114 os_timeout_value = scmd->request->timeout / HZ;
3115 mr_device_priv_data = scmd->device->hostdata;
3116 cmd->pd_interface = mr_device_priv_data->interface_type;
3117
3118 io_request = cmd->io_request;
3119 /* get RAID_Context pointer */
3120 pRAID_Context = &io_request->RaidContext.raid_context;
3121 pRAID_Context->reg_lock_flags = 0;
3122 pRAID_Context->reg_lock_row_lba = 0;
3123 pRAID_Context->reg_lock_length = 0;
3124 io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
3125 io_request->LUN[1] = scmd->device->lun;
3126 pRAID_Context->raid_flags = MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD
3127 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT;
3128
3129 /* If FW supports PD sequence number */
3130 if (instance->support_seqnum_jbod_fp) {
3131 if (instance->use_seqnum_jbod_fp &&
3132 instance->pd_list[pd_index].driveType == TYPE_DISK) {
3133
3134 /* More than 256 PD/JBOD support for Ventura */
3135 if (instance->support_morethan256jbod)
3136 pRAID_Context->virtual_disk_tgt_id =
3137 pd_sync->seq[pd_index].pd_target_id;
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 =
3143 pd_sync->seq[pd_index].seqNum;
3144 io_request->DevHandle =
3145 pd_sync->seq[pd_index].devHandle;
3146 if (instance->adapter_type >= VENTURA_SERIES) {
3147 io_request->RaidContext.raid_context_g35.routing_flags |=
3148 (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
3149 io_request->RaidContext.raid_context_g35.nseg_type |=
3150 (1 << RAID_CONTEXT_NSEG_SHIFT);
3151 io_request->RaidContext.raid_context_g35.nseg_type |=
3152 (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
3153 } else {
3154 pRAID_Context->type = MPI2_TYPE_CUDA;
3155 pRAID_Context->nseg = 0x1;
3156 pRAID_Context->reg_lock_flags |=
3157 (MR_RL_FLAGS_SEQ_NUM_ENABLE |
3158 MR_RL_FLAGS_GRANT_DESTINATION_CUDA);
3159 }
3160 } else {
3161 pRAID_Context->virtual_disk_tgt_id =
3162 cpu_to_le16(device_id +
3163 (MAX_PHYSICAL_DEVICES - 1));
3164 pRAID_Context->config_seq_num = 0;
3165 io_request->DevHandle = cpu_to_le16(0xFFFF);
3166 }
3167 } else {
3168 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
3169 pRAID_Context->config_seq_num = 0;
3170
3171 if (fusion->fast_path_io) {
3172 local_map_ptr =
3173 fusion->ld_drv_map[(instance->map_id & 1)];
3174 io_request->DevHandle =
3175 local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
3176 } else {
3177 io_request->DevHandle = cpu_to_le16(0xFFFF);
3178 }
3179 }
3180
3181 cmd->request_desc->SCSIIO.DevHandle = io_request->DevHandle;
3182
3183 megasas_get_msix_index(instance, scmd, cmd, 1);
3184
3185 if (!fp_possible) {
3186 /* system pd firmware path */
3187 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
3188 cmd->request_desc->SCSIIO.RequestFlags =
3189 (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
3190 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3191 pRAID_Context->timeout_value = cpu_to_le16(os_timeout_value);
3192 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
3193 } else {
3194 if (os_timeout_value)
3195 os_timeout_value++;
3196
3197 /* system pd Fast Path */
3198 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
3199 timeout_limit = (scmd->device->type == TYPE_DISK) ?
3200 255 : 0xFFFF;
3201 pRAID_Context->timeout_value =
3202 cpu_to_le16((os_timeout_value > timeout_limit) ?
3203 timeout_limit : os_timeout_value);
3204 if (instance->adapter_type >= INVADER_SERIES)
3205 io_request->IoFlags |=
3206 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
3207
3208 cmd->request_desc->SCSIIO.RequestFlags =
3209 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
3210 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3211 }
3212 }
3213
3214 /**
3215 * megasas_build_io_fusion - Prepares IOs to devices
3216 * @instance: Adapter soft state
3217 * @scp: SCSI command
3218 * @cmd: Command to be prepared
3219 *
3220 * Invokes helper functions to prepare request frames
3221 * and sets flags appropriate for IO/Non-IO cmd
3222 */
3223 static int
3224 megasas_build_io_fusion(struct megasas_instance *instance,
3225 struct scsi_cmnd *scp,
3226 struct megasas_cmd_fusion *cmd)
3227 {
3228 int sge_count;
3229 u8 cmd_type;
3230 struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request;
3231 struct MR_PRIV_DEVICE *mr_device_priv_data;
3232 mr_device_priv_data = scp->device->hostdata;
3233
3234 /* Zero out some fields so they don't get reused */
3235 memset(io_request->LUN, 0x0, 8);
3236 io_request->CDB.EEDP32.PrimaryReferenceTag = 0;
3237 io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0;
3238 io_request->EEDPFlags = 0;
3239 io_request->Control = 0;
3240 io_request->EEDPBlockSize = 0;
3241 io_request->ChainOffset = 0;
3242 io_request->RaidContext.raid_context.raid_flags = 0;
3243 io_request->RaidContext.raid_context.type = 0;
3244 io_request->RaidContext.raid_context.nseg = 0;
3245
3246 memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len);
3247 /*
3248 * Just the CDB length,rest of the Flags are zero
3249 * This will be modified for FP in build_ldio_fusion
3250 */
3251 io_request->IoFlags = cpu_to_le16(scp->cmd_len);
3252
3253 switch (cmd_type = megasas_cmd_type(scp)) {
3254 case READ_WRITE_LDIO:
3255 megasas_build_ldio_fusion(instance, scp, cmd);
3256 break;
3257 case NON_READ_WRITE_LDIO:
3258 megasas_build_ld_nonrw_fusion(instance, scp, cmd);
3259 break;
3260 case READ_WRITE_SYSPDIO:
3261 megasas_build_syspd_fusion(instance, scp, cmd, true);
3262 break;
3263 case NON_READ_WRITE_SYSPDIO:
3264 if (instance->secure_jbod_support ||
3265 mr_device_priv_data->is_tm_capable)
3266 megasas_build_syspd_fusion(instance, scp, cmd, false);
3267 else
3268 megasas_build_syspd_fusion(instance, scp, cmd, true);
3269 break;
3270 default:
3271 break;
3272 }
3273
3274 /*
3275 * Construct SGL
3276 */
3277
3278 sge_count = megasas_make_sgl(instance, scp, cmd);
3279
3280 if (sge_count > instance->max_num_sge || (sge_count < 0)) {
3281 dev_err(&instance->pdev->dev,
3282 "%s %d sge_count (%d) is out of range. Range is: 0-%d\n",
3283 __func__, __LINE__, sge_count, instance->max_num_sge);
3284 return 1;
3285 }
3286
3287 if (instance->adapter_type >= VENTURA_SERIES) {
3288 set_num_sge(&io_request->RaidContext.raid_context_g35, sge_count);
3289 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.routing_flags);
3290 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.nseg_type);
3291 } else {
3292 /* numSGE store lower 8 bit of sge_count.
3293 * numSGEExt store higher 8 bit of sge_count
3294 */
3295 io_request->RaidContext.raid_context.num_sge = sge_count;
3296 io_request->RaidContext.raid_context.num_sge_ext =
3297 (u8)(sge_count >> 8);
3298 }
3299
3300 io_request->SGLFlags = cpu_to_le16(MPI2_SGE_FLAGS_64_BIT_ADDRESSING);
3301
3302 if (scp->sc_data_direction == DMA_TO_DEVICE)
3303 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_WRITE);
3304 else if (scp->sc_data_direction == DMA_FROM_DEVICE)
3305 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_READ);
3306
3307 io_request->SGLOffset0 =
3308 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4;
3309
3310 io_request->SenseBufferLowAddress =
3311 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
3312 io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
3313
3314 cmd->scmd = scp;
3315 scp->SCp.ptr = (char *)cmd;
3316
3317 return 0;
3318 }
3319
3320 static union MEGASAS_REQUEST_DESCRIPTOR_UNION *
3321 megasas_get_request_descriptor(struct megasas_instance *instance, u16 index)
3322 {
3323 u8 *p;
3324 struct fusion_context *fusion;
3325
3326 fusion = instance->ctrl_context;
3327 p = fusion->req_frames_desc +
3328 sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) * index;
3329
3330 return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p;
3331 }
3332
3333
3334 /* megasas_prepate_secondRaid1_IO
3335 * It prepares the raid 1 second IO
3336 */
3337 static void megasas_prepare_secondRaid1_IO(struct megasas_instance *instance,
3338 struct megasas_cmd_fusion *cmd,
3339 struct megasas_cmd_fusion *r1_cmd)
3340 {
3341 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc, *req_desc2 = NULL;
3342 struct fusion_context *fusion;
3343 fusion = instance->ctrl_context;
3344 req_desc = cmd->request_desc;
3345 /* copy the io request frame as well as 8 SGEs data for r1 command*/
3346 memcpy(r1_cmd->io_request, cmd->io_request,
3347 (sizeof(struct MPI2_RAID_SCSI_IO_REQUEST)));
3348 memcpy(&r1_cmd->io_request->SGL, &cmd->io_request->SGL,
3349 (fusion->max_sge_in_main_msg * sizeof(union MPI2_SGE_IO_UNION)));
3350 /*sense buffer is different for r1 command*/
3351 r1_cmd->io_request->SenseBufferLowAddress =
3352 cpu_to_le32(lower_32_bits(r1_cmd->sense_phys_addr));
3353 r1_cmd->scmd = cmd->scmd;
3354 req_desc2 = megasas_get_request_descriptor(instance,
3355 (r1_cmd->index - 1));
3356 req_desc2->Words = 0;
3357 r1_cmd->request_desc = req_desc2;
3358 req_desc2->SCSIIO.SMID = cpu_to_le16(r1_cmd->index);
3359 req_desc2->SCSIIO.RequestFlags = req_desc->SCSIIO.RequestFlags;
3360 r1_cmd->request_desc->SCSIIO.DevHandle = cmd->r1_alt_dev_handle;
3361 r1_cmd->io_request->DevHandle = cmd->r1_alt_dev_handle;
3362 r1_cmd->r1_alt_dev_handle = cmd->io_request->DevHandle;
3363 cmd->io_request->RaidContext.raid_context_g35.flow_specific.peer_smid =
3364 cpu_to_le16(r1_cmd->index);
3365 r1_cmd->io_request->RaidContext.raid_context_g35.flow_specific.peer_smid =
3366 cpu_to_le16(cmd->index);
3367 /*MSIxIndex of both commands request descriptors should be same*/
3368 r1_cmd->request_desc->SCSIIO.MSIxIndex =
3369 cmd->request_desc->SCSIIO.MSIxIndex;
3370 /*span arm is different for r1 cmd*/
3371 r1_cmd->io_request->RaidContext.raid_context_g35.span_arm =
3372 cmd->io_request->RaidContext.raid_context_g35.span_arm + 1;
3373 }
3374
3375 /**
3376 * megasas_build_and_issue_cmd_fusion -Main routine for building and
3377 * issuing non IOCTL cmd
3378 * @instance: Adapter soft state
3379 * @scmd: pointer to scsi cmd from OS
3380 */
3381 static u32
3382 megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance,
3383 struct scsi_cmnd *scmd)
3384 {
3385 struct megasas_cmd_fusion *cmd, *r1_cmd = NULL;
3386 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3387 u32 index;
3388
3389 if ((megasas_cmd_type(scmd) == READ_WRITE_LDIO) &&
3390 instance->ldio_threshold &&
3391 (atomic_inc_return(&instance->ldio_outstanding) >
3392 instance->ldio_threshold)) {
3393 atomic_dec(&instance->ldio_outstanding);
3394 return SCSI_MLQUEUE_DEVICE_BUSY;
3395 }
3396
3397 if (atomic_inc_return(&instance->fw_outstanding) >
3398 instance->host->can_queue) {
3399 atomic_dec(&instance->fw_outstanding);
3400 return SCSI_MLQUEUE_HOST_BUSY;
3401 }
3402
3403 cmd = megasas_get_cmd_fusion(instance, scmd->request->tag);
3404
3405 if (!cmd) {
3406 atomic_dec(&instance->fw_outstanding);
3407 return SCSI_MLQUEUE_HOST_BUSY;
3408 }
3409
3410 index = cmd->index;
3411
3412 req_desc = megasas_get_request_descriptor(instance, index-1);
3413
3414 req_desc->Words = 0;
3415 cmd->request_desc = req_desc;
3416
3417 if (megasas_build_io_fusion(instance, scmd, cmd)) {
3418 megasas_return_cmd_fusion(instance, cmd);
3419 dev_err(&instance->pdev->dev, "Error building command\n");
3420 cmd->request_desc = NULL;
3421 atomic_dec(&instance->fw_outstanding);
3422 return SCSI_MLQUEUE_HOST_BUSY;
3423 }
3424
3425 req_desc = cmd->request_desc;
3426 req_desc->SCSIIO.SMID = cpu_to_le16(index);
3427
3428 if (cmd->io_request->ChainOffset != 0 &&
3429 cmd->io_request->ChainOffset != 0xF)
3430 dev_err(&instance->pdev->dev, "The chain offset value is not "
3431 "correct : %x\n", cmd->io_request->ChainOffset);
3432 /*
3433 * if it is raid 1/10 fp write capable.
3434 * try to get second command from pool and construct it.
3435 * From FW, it has confirmed that lba values of two PDs
3436 * corresponds to single R1/10 LD are always same
3437 *
3438 */
3439 /* driver side count always should be less than max_fw_cmds
3440 * to get new command
3441 */
3442 if (cmd->r1_alt_dev_handle != MR_DEVHANDLE_INVALID) {
3443 r1_cmd = megasas_get_cmd_fusion(instance,
3444 (scmd->request->tag + instance->max_fw_cmds));
3445 megasas_prepare_secondRaid1_IO(instance, cmd, r1_cmd);
3446 }
3447
3448
3449 /*
3450 * Issue the command to the FW
3451 */
3452
3453 megasas_fire_cmd_fusion(instance, req_desc);
3454
3455 if (r1_cmd)
3456 megasas_fire_cmd_fusion(instance, r1_cmd->request_desc);
3457
3458
3459 return 0;
3460 }
3461
3462 /**
3463 * megasas_complete_r1_command -
3464 * completes R1 FP write commands which has valid peer smid
3465 * @instance: Adapter soft state
3466 * @cmd_fusion: MPT command frame
3467 *
3468 */
3469 static inline void
3470 megasas_complete_r1_command(struct megasas_instance *instance,
3471 struct megasas_cmd_fusion *cmd)
3472 {
3473 u8 *sense, status, ex_status;
3474 u32 data_length;
3475 u16 peer_smid;
3476 struct fusion_context *fusion;
3477 struct megasas_cmd_fusion *r1_cmd = NULL;
3478 struct scsi_cmnd *scmd_local = NULL;
3479 struct RAID_CONTEXT_G35 *rctx_g35;
3480
3481 rctx_g35 = &cmd->io_request->RaidContext.raid_context_g35;
3482 fusion = instance->ctrl_context;
3483 peer_smid = le16_to_cpu(rctx_g35->flow_specific.peer_smid);
3484
3485 r1_cmd = fusion->cmd_list[peer_smid - 1];
3486 scmd_local = cmd->scmd;
3487 status = rctx_g35->status;
3488 ex_status = rctx_g35->ex_status;
3489 data_length = cmd->io_request->DataLength;
3490 sense = cmd->sense;
3491
3492 cmd->cmd_completed = true;
3493
3494 /* Check if peer command is completed or not*/
3495 if (r1_cmd->cmd_completed) {
3496 rctx_g35 = &r1_cmd->io_request->RaidContext.raid_context_g35;
3497 if (rctx_g35->status != MFI_STAT_OK) {
3498 status = rctx_g35->status;
3499 ex_status = rctx_g35->ex_status;
3500 data_length = r1_cmd->io_request->DataLength;
3501 sense = r1_cmd->sense;
3502 }
3503
3504 megasas_return_cmd_fusion(instance, r1_cmd);
3505 map_cmd_status(fusion, scmd_local, status, ex_status,
3506 le32_to_cpu(data_length), sense);
3507 if (instance->ldio_threshold &&
3508 megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)
3509 atomic_dec(&instance->ldio_outstanding);
3510 scmd_local->SCp.ptr = NULL;
3511 megasas_return_cmd_fusion(instance, cmd);
3512 scsi_dma_unmap(scmd_local);
3513 scmd_local->scsi_done(scmd_local);
3514 }
3515 }
3516
3517 /**
3518 * complete_cmd_fusion - Completes command
3519 * @instance: Adapter soft state
3520 * Completes all commands that is in reply descriptor queue
3521 */
3522 static int
3523 complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex,
3524 struct megasas_irq_context *irq_context)
3525 {
3526 union MPI2_REPLY_DESCRIPTORS_UNION *desc;
3527 struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc;
3528 struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req;
3529 struct fusion_context *fusion;
3530 struct megasas_cmd *cmd_mfi;
3531 struct megasas_cmd_fusion *cmd_fusion;
3532 u16 smid, num_completed;
3533 u8 reply_descript_type, *sense, status, extStatus;
3534 u32 device_id, data_length;
3535 union desc_value d_val;
3536 struct LD_LOAD_BALANCE_INFO *lbinfo;
3537 int threshold_reply_count = 0;
3538 struct scsi_cmnd *scmd_local = NULL;
3539 struct MR_TASK_MANAGE_REQUEST *mr_tm_req;
3540 struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_tm_req;
3541
3542 fusion = instance->ctrl_context;
3543
3544 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
3545 return IRQ_HANDLED;
3546
3547 desc = fusion->reply_frames_desc[MSIxIndex] +
3548 fusion->last_reply_idx[MSIxIndex];
3549
3550 reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
3551
3552 d_val.word = desc->Words;
3553
3554 reply_descript_type = reply_desc->ReplyFlags &
3555 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
3556
3557 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
3558 return IRQ_NONE;
3559
3560 num_completed = 0;
3561
3562 while (d_val.u.low != cpu_to_le32(UINT_MAX) &&
3563 d_val.u.high != cpu_to_le32(UINT_MAX)) {
3564
3565 smid = le16_to_cpu(reply_desc->SMID);
3566 cmd_fusion = fusion->cmd_list[smid - 1];
3567 scsi_io_req = (struct MPI2_RAID_SCSI_IO_REQUEST *)
3568 cmd_fusion->io_request;
3569
3570 scmd_local = cmd_fusion->scmd;
3571 status = scsi_io_req->RaidContext.raid_context.status;
3572 extStatus = scsi_io_req->RaidContext.raid_context.ex_status;
3573 sense = cmd_fusion->sense;
3574 data_length = scsi_io_req->DataLength;
3575
3576 switch (scsi_io_req->Function) {
3577 case MPI2_FUNCTION_SCSI_TASK_MGMT:
3578 mr_tm_req = (struct MR_TASK_MANAGE_REQUEST *)
3579 cmd_fusion->io_request;
3580 mpi_tm_req = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *)
3581 &mr_tm_req->TmRequest;
3582 dev_dbg(&instance->pdev->dev, "TM completion:"
3583 "type: 0x%x TaskMID: 0x%x\n",
3584 mpi_tm_req->TaskType, mpi_tm_req->TaskMID);
3585 complete(&cmd_fusion->done);
3586 break;
3587 case MPI2_FUNCTION_SCSI_IO_REQUEST: /*Fast Path IO.*/
3588 /* Update load balancing info */
3589 if (fusion->load_balance_info &&
3590 (cmd_fusion->scmd->SCp.Status &
3591 MEGASAS_LOAD_BALANCE_FLAG)) {
3592 device_id = MEGASAS_DEV_INDEX(scmd_local);
3593 lbinfo = &fusion->load_balance_info[device_id];
3594 atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]);
3595 cmd_fusion->scmd->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
3596 }
3597 /* Fall through - and complete IO */
3598 case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */
3599 atomic_dec(&instance->fw_outstanding);
3600 if (cmd_fusion->r1_alt_dev_handle == MR_DEVHANDLE_INVALID) {
3601 map_cmd_status(fusion, scmd_local, status,
3602 extStatus, le32_to_cpu(data_length),
3603 sense);
3604 if (instance->ldio_threshold &&
3605 (megasas_cmd_type(scmd_local) == READ_WRITE_LDIO))
3606 atomic_dec(&instance->ldio_outstanding);
3607 scmd_local->SCp.ptr = NULL;
3608 megasas_return_cmd_fusion(instance, cmd_fusion);
3609 scsi_dma_unmap(scmd_local);
3610 scmd_local->scsi_done(scmd_local);
3611 } else /* Optimal VD - R1 FP command completion. */
3612 megasas_complete_r1_command(instance, cmd_fusion);
3613 break;
3614 case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */
3615 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
3616 /* Poll mode. Dummy free.
3617 * In case of Interrupt mode, caller has reverse check.
3618 */
3619 if (cmd_mfi->flags & DRV_DCMD_POLLED_MODE) {
3620 cmd_mfi->flags &= ~DRV_DCMD_POLLED_MODE;
3621 megasas_return_cmd(instance, cmd_mfi);
3622 } else
3623 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
3624 break;
3625 }
3626
3627 fusion->last_reply_idx[MSIxIndex]++;
3628 if (fusion->last_reply_idx[MSIxIndex] >=
3629 fusion->reply_q_depth)
3630 fusion->last_reply_idx[MSIxIndex] = 0;
3631
3632 desc->Words = cpu_to_le64(ULLONG_MAX);
3633 num_completed++;
3634 threshold_reply_count++;
3635
3636 /* Get the next reply descriptor */
3637 if (!fusion->last_reply_idx[MSIxIndex])
3638 desc = fusion->reply_frames_desc[MSIxIndex];
3639 else
3640 desc++;
3641
3642 reply_desc =
3643 (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
3644
3645 d_val.word = desc->Words;
3646
3647 reply_descript_type = reply_desc->ReplyFlags &
3648 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
3649
3650 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
3651 break;
3652 /*
3653 * Write to reply post host index register after completing threshold
3654 * number of reply counts and still there are more replies in reply queue
3655 * pending to be completed
3656 */
3657 if (threshold_reply_count >= instance->threshold_reply_count) {
3658 if (instance->msix_combined)
3659 writel(((MSIxIndex & 0x7) << 24) |
3660 fusion->last_reply_idx[MSIxIndex],
3661 instance->reply_post_host_index_addr[MSIxIndex/8]);
3662 else
3663 writel((MSIxIndex << 24) |
3664 fusion->last_reply_idx[MSIxIndex],
3665 instance->reply_post_host_index_addr[0]);
3666 threshold_reply_count = 0;
3667 if (irq_context) {
3668 if (!irq_context->irq_poll_scheduled) {
3669 irq_context->irq_poll_scheduled = true;
3670 irq_context->irq_line_enable = true;
3671 irq_poll_sched(&irq_context->irqpoll);
3672 }
3673 return num_completed;
3674 }
3675 }
3676 }
3677
3678 if (num_completed) {
3679 wmb();
3680 if (instance->msix_combined)
3681 writel(((MSIxIndex & 0x7) << 24) |
3682 fusion->last_reply_idx[MSIxIndex],
3683 instance->reply_post_host_index_addr[MSIxIndex/8]);
3684 else
3685 writel((MSIxIndex << 24) |
3686 fusion->last_reply_idx[MSIxIndex],
3687 instance->reply_post_host_index_addr[0]);
3688 megasas_check_and_restore_queue_depth(instance);
3689 }
3690 return num_completed;
3691 }
3692
3693 /**
3694 * megasas_enable_irq_poll() - enable irqpoll
3695 */
3696 static void megasas_enable_irq_poll(struct megasas_instance *instance)
3697 {
3698 u32 count, i;
3699 struct megasas_irq_context *irq_ctx;
3700
3701 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3702
3703 for (i = 0; i < count; i++) {
3704 irq_ctx = &instance->irq_context[i];
3705 irq_poll_enable(&irq_ctx->irqpoll);
3706 }
3707 }
3708
3709 /**
3710 * megasas_sync_irqs - Synchronizes all IRQs owned by adapter
3711 * @instance: Adapter soft state
3712 */
3713 static void megasas_sync_irqs(unsigned long instance_addr)
3714 {
3715 u32 count, i;
3716 struct megasas_instance *instance =
3717 (struct megasas_instance *)instance_addr;
3718 struct megasas_irq_context *irq_ctx;
3719
3720 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3721
3722 for (i = 0; i < count; i++) {
3723 synchronize_irq(pci_irq_vector(instance->pdev, i));
3724 irq_ctx = &instance->irq_context[i];
3725 irq_poll_disable(&irq_ctx->irqpoll);
3726 if (irq_ctx->irq_poll_scheduled) {
3727 irq_ctx->irq_poll_scheduled = false;
3728 enable_irq(irq_ctx->os_irq);
3729 }
3730 }
3731 }
3732
3733 /**
3734 * megasas_irqpoll() - process a queue for completed reply descriptors
3735 * @irqpoll: IRQ poll structure associated with queue to poll.
3736 * @budget: Threshold of reply descriptors to process per poll.
3737 *
3738 * Return: The number of entries processed.
3739 */
3740
3741 int megasas_irqpoll(struct irq_poll *irqpoll, int budget)
3742 {
3743 struct megasas_irq_context *irq_ctx;
3744 struct megasas_instance *instance;
3745 int num_entries;
3746
3747 irq_ctx = container_of(irqpoll, struct megasas_irq_context, irqpoll);
3748 instance = irq_ctx->instance;
3749
3750 if (irq_ctx->irq_line_enable) {
3751 disable_irq(irq_ctx->os_irq);
3752 irq_ctx->irq_line_enable = false;
3753 }
3754
3755 num_entries = complete_cmd_fusion(instance, irq_ctx->MSIxIndex, irq_ctx);
3756 if (num_entries < budget) {
3757 irq_poll_complete(irqpoll);
3758 irq_ctx->irq_poll_scheduled = false;
3759 enable_irq(irq_ctx->os_irq);
3760 }
3761
3762 return num_entries;
3763 }
3764
3765 /**
3766 * megasas_complete_cmd_dpc_fusion - Completes command
3767 * @instance: Adapter soft state
3768 *
3769 * Tasklet to complete cmds
3770 */
3771 static void
3772 megasas_complete_cmd_dpc_fusion(unsigned long instance_addr)
3773 {
3774 struct megasas_instance *instance =
3775 (struct megasas_instance *)instance_addr;
3776 u32 count, MSIxIndex;
3777
3778 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3779
3780 /* If we have already declared adapter dead, donot complete cmds */
3781 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
3782 return;
3783
3784 for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++)
3785 complete_cmd_fusion(instance, MSIxIndex, NULL);
3786 }
3787
3788 /**
3789 * megasas_isr_fusion - isr entry point
3790 */
3791 static irqreturn_t megasas_isr_fusion(int irq, void *devp)
3792 {
3793 struct megasas_irq_context *irq_context = devp;
3794 struct megasas_instance *instance = irq_context->instance;
3795 u32 mfiStatus;
3796
3797 if (instance->mask_interrupts)
3798 return IRQ_NONE;
3799
3800 #if defined(ENABLE_IRQ_POLL)
3801 if (irq_context->irq_poll_scheduled)
3802 return IRQ_HANDLED;
3803 #endif
3804
3805 if (!instance->msix_vectors) {
3806 mfiStatus = instance->instancet->clear_intr(instance);
3807 if (!mfiStatus)
3808 return IRQ_NONE;
3809 }
3810
3811 /* If we are resetting, bail */
3812 if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) {
3813 instance->instancet->clear_intr(instance);
3814 return IRQ_HANDLED;
3815 }
3816
3817 return complete_cmd_fusion(instance, irq_context->MSIxIndex, irq_context)
3818 ? IRQ_HANDLED : IRQ_NONE;
3819 }
3820
3821 /**
3822 * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru
3823 * @instance: Adapter soft state
3824 * mfi_cmd: megasas_cmd pointer
3825 *
3826 */
3827 static void
3828 build_mpt_mfi_pass_thru(struct megasas_instance *instance,
3829 struct megasas_cmd *mfi_cmd)
3830 {
3831 struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain;
3832 struct MPI2_RAID_SCSI_IO_REQUEST *io_req;
3833 struct megasas_cmd_fusion *cmd;
3834 struct fusion_context *fusion;
3835 struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr;
3836
3837 fusion = instance->ctrl_context;
3838
3839 cmd = megasas_get_cmd_fusion(instance,
3840 instance->max_scsi_cmds + mfi_cmd->index);
3841
3842 /* Save the smid. To be used for returning the cmd */
3843 mfi_cmd->context.smid = cmd->index;
3844
3845 /*
3846 * For cmds where the flag is set, store the flag and check
3847 * on completion. For cmds with this flag, don't call
3848 * megasas_complete_cmd
3849 */
3850
3851 if (frame_hdr->flags & cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE))
3852 mfi_cmd->flags |= DRV_DCMD_POLLED_MODE;
3853
3854 io_req = cmd->io_request;
3855
3856 if (instance->adapter_type >= INVADER_SERIES) {
3857 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end =
3858 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL;
3859 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
3860 sgl_ptr_end->Flags = 0;
3861 }
3862
3863 mpi25_ieee_chain =
3864 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain;
3865
3866 io_req->Function = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST;
3867 io_req->SGLOffset0 = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST,
3868 SGL) / 4;
3869 io_req->ChainOffset = fusion->chain_offset_mfi_pthru;
3870
3871 mpi25_ieee_chain->Address = cpu_to_le64(mfi_cmd->frame_phys_addr);
3872
3873 mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
3874 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR;
3875
3876 mpi25_ieee_chain->Length = cpu_to_le32(instance->mfi_frame_size);
3877 }
3878
3879 /**
3880 * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd
3881 * @instance: Adapter soft state
3882 * @cmd: mfi cmd to build
3883 *
3884 */
3885 static union MEGASAS_REQUEST_DESCRIPTOR_UNION *
3886 build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
3887 {
3888 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc = NULL;
3889 u16 index;
3890
3891 build_mpt_mfi_pass_thru(instance, cmd);
3892 index = cmd->context.smid;
3893
3894 req_desc = megasas_get_request_descriptor(instance, index - 1);
3895
3896 req_desc->Words = 0;
3897 req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
3898 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3899
3900 req_desc->SCSIIO.SMID = cpu_to_le16(index);
3901
3902 return req_desc;
3903 }
3904
3905 /**
3906 * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd
3907 * @instance: Adapter soft state
3908 * @cmd: mfi cmd pointer
3909 *
3910 */
3911 static void
3912 megasas_issue_dcmd_fusion(struct megasas_instance *instance,
3913 struct megasas_cmd *cmd)
3914 {
3915 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3916
3917 req_desc = build_mpt_cmd(instance, cmd);
3918
3919 megasas_fire_cmd_fusion(instance, req_desc);
3920 return;
3921 }
3922
3923 /**
3924 * megasas_release_fusion - Reverses the FW initialization
3925 * @instance: Adapter soft state
3926 */
3927 void
3928 megasas_release_fusion(struct megasas_instance *instance)
3929 {
3930 megasas_free_ioc_init_cmd(instance);
3931 megasas_free_cmds(instance);
3932 megasas_free_cmds_fusion(instance);
3933
3934 iounmap(instance->reg_set);
3935
3936 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
3937 }
3938
3939 /**
3940 * megasas_read_fw_status_reg_fusion - returns the current FW status value
3941 * @regs: MFI register set
3942 */
3943 static u32
3944 megasas_read_fw_status_reg_fusion(struct megasas_instance *instance)
3945 {
3946 return megasas_readl(instance, &instance->reg_set->outbound_scratch_pad_0);
3947 }
3948
3949 /**
3950 * megasas_alloc_host_crash_buffer - Host buffers for Crash dump collection from Firmware
3951 * @instance: Controller's soft instance
3952 * return: Number of allocated host crash buffers
3953 */
3954 static void
3955 megasas_alloc_host_crash_buffer(struct megasas_instance *instance)
3956 {
3957 unsigned int i;
3958
3959 for (i = 0; i < MAX_CRASH_DUMP_SIZE; i++) {
3960 instance->crash_buf[i] = vzalloc(CRASH_DMA_BUF_SIZE);
3961 if (!instance->crash_buf[i]) {
3962 dev_info(&instance->pdev->dev, "Firmware crash dump "
3963 "memory allocation failed at index %d\n", i);
3964 break;
3965 }
3966 }
3967 instance->drv_buf_alloc = i;
3968 }
3969
3970 /**
3971 * megasas_free_host_crash_buffer - Host buffers for Crash dump collection from Firmware
3972 * @instance: Controller's soft instance
3973 */
3974 void
3975 megasas_free_host_crash_buffer(struct megasas_instance *instance)
3976 {
3977 unsigned int i;
3978 for (i = 0; i < instance->drv_buf_alloc; i++) {
3979 if (instance->crash_buf[i])
3980 vfree(instance->crash_buf[i]);
3981 }
3982 instance->drv_buf_index = 0;
3983 instance->drv_buf_alloc = 0;
3984 instance->fw_crash_state = UNAVAILABLE;
3985 instance->fw_crash_buffer_size = 0;
3986 }
3987
3988 /**
3989 * megasas_adp_reset_fusion - For controller reset
3990 * @regs: MFI register set
3991 */
3992 static int
3993 megasas_adp_reset_fusion(struct megasas_instance *instance,
3994 struct megasas_register_set __iomem *regs)
3995 {
3996 u32 host_diag, abs_state, retry;
3997
3998 /* Now try to reset the chip */
3999 writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
4000 writel(MPI2_WRSEQ_1ST_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
4001 writel(MPI2_WRSEQ_2ND_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
4002 writel(MPI2_WRSEQ_3RD_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
4003 writel(MPI2_WRSEQ_4TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
4004 writel(MPI2_WRSEQ_5TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
4005 writel(MPI2_WRSEQ_6TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
4006
4007 /* Check that the diag write enable (DRWE) bit is on */
4008 host_diag = megasas_readl(instance, &instance->reg_set->fusion_host_diag);
4009 retry = 0;
4010 while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) {
4011 msleep(100);
4012 host_diag = megasas_readl(instance,
4013 &instance->reg_set->fusion_host_diag);
4014 if (retry++ == 100) {
4015 dev_warn(&instance->pdev->dev,
4016 "Host diag unlock failed from %s %d\n",
4017 __func__, __LINE__);
4018 break;
4019 }
4020 }
4021 if (!(host_diag & HOST_DIAG_WRITE_ENABLE))
4022 return -1;
4023
4024 /* Send chip reset command */
4025 writel(host_diag | HOST_DIAG_RESET_ADAPTER,
4026 &instance->reg_set->fusion_host_diag);
4027 msleep(3000);
4028
4029 /* Make sure reset adapter bit is cleared */
4030 host_diag = megasas_readl(instance, &instance->reg_set->fusion_host_diag);
4031 retry = 0;
4032 while (host_diag & HOST_DIAG_RESET_ADAPTER) {
4033 msleep(100);
4034 host_diag = megasas_readl(instance,
4035 &instance->reg_set->fusion_host_diag);
4036 if (retry++ == 1000) {
4037 dev_warn(&instance->pdev->dev,
4038 "Diag reset adapter never cleared %s %d\n",
4039 __func__, __LINE__);
4040 break;
4041 }
4042 }
4043 if (host_diag & HOST_DIAG_RESET_ADAPTER)
4044 return -1;
4045
4046 abs_state = instance->instancet->read_fw_status_reg(instance)
4047 & MFI_STATE_MASK;
4048 retry = 0;
4049
4050 while ((abs_state <= MFI_STATE_FW_INIT) && (retry++ < 1000)) {
4051 msleep(100);
4052 abs_state = instance->instancet->
4053 read_fw_status_reg(instance) & MFI_STATE_MASK;
4054 }
4055 if (abs_state <= MFI_STATE_FW_INIT) {
4056 dev_warn(&instance->pdev->dev,
4057 "fw state < MFI_STATE_FW_INIT, state = 0x%x %s %d\n",
4058 abs_state, __func__, __LINE__);
4059 return -1;
4060 }
4061
4062 return 0;
4063 }
4064
4065 /**
4066 * megasas_check_reset_fusion - For controller reset check
4067 * @regs: MFI register set
4068 */
4069 static int
4070 megasas_check_reset_fusion(struct megasas_instance *instance,
4071 struct megasas_register_set __iomem *regs)
4072 {
4073 return 0;
4074 }
4075
4076 /**
4077 * megasas_trigger_snap_dump - Trigger snap dump in FW
4078 * @instance: Soft instance of adapter
4079 */
4080 static inline void megasas_trigger_snap_dump(struct megasas_instance *instance)
4081 {
4082 int j;
4083 u32 fw_state, abs_state;
4084
4085 if (!instance->disableOnlineCtrlReset) {
4086 dev_info(&instance->pdev->dev, "Trigger snap dump\n");
4087 writel(MFI_ADP_TRIGGER_SNAP_DUMP,
4088 &instance->reg_set->doorbell);
4089 readl(&instance->reg_set->doorbell);
4090 }
4091
4092 for (j = 0; j < instance->snapdump_wait_time; j++) {
4093 abs_state = instance->instancet->read_fw_status_reg(instance);
4094 fw_state = abs_state & MFI_STATE_MASK;
4095 if (fw_state == MFI_STATE_FAULT) {
4096 dev_printk(KERN_ERR, &instance->pdev->dev,
4097 "FW in FAULT state Fault code:0x%x subcode:0x%x func:%s\n",
4098 abs_state & MFI_STATE_FAULT_CODE,
4099 abs_state & MFI_STATE_FAULT_SUBCODE, __func__);
4100 return;
4101 }
4102 msleep(1000);
4103 }
4104 }
4105
4106 /* This function waits for outstanding commands on fusion to complete */
4107 static int
4108 megasas_wait_for_outstanding_fusion(struct megasas_instance *instance,
4109 int reason, int *convert)
4110 {
4111 int i, outstanding, retval = 0, hb_seconds_missed = 0;
4112 u32 fw_state, abs_state;
4113 u32 waittime_for_io_completion;
4114
4115 waittime_for_io_completion =
4116 min_t(u32, resetwaittime,
4117 (resetwaittime - instance->snapdump_wait_time));
4118
4119 if (reason == MFI_IO_TIMEOUT_OCR) {
4120 dev_info(&instance->pdev->dev,
4121 "MFI command is timed out\n");
4122 megasas_complete_cmd_dpc_fusion((unsigned long)instance);
4123 if (instance->snapdump_wait_time)
4124 megasas_trigger_snap_dump(instance);
4125 retval = 1;
4126 goto out;
4127 }
4128
4129 for (i = 0; i < waittime_for_io_completion; i++) {
4130 /* Check if firmware is in fault state */
4131 abs_state = instance->instancet->read_fw_status_reg(instance);
4132 fw_state = abs_state & MFI_STATE_MASK;
4133 if (fw_state == MFI_STATE_FAULT) {
4134 dev_printk(KERN_ERR, &instance->pdev->dev,
4135 "FW in FAULT state Fault code:0x%x subcode:0x%x func:%s\n",
4136 abs_state & MFI_STATE_FAULT_CODE,
4137 abs_state & MFI_STATE_FAULT_SUBCODE, __func__);
4138 megasas_complete_cmd_dpc_fusion((unsigned long)instance);
4139 if (instance->requestorId && reason) {
4140 dev_warn(&instance->pdev->dev, "SR-IOV Found FW in FAULT"
4141 " state while polling during"
4142 " I/O timeout handling for %d\n",
4143 instance->host->host_no);
4144 *convert = 1;
4145 }
4146
4147 retval = 1;
4148 goto out;
4149 }
4150
4151
4152 /* If SR-IOV VF mode & heartbeat timeout, don't wait */
4153 if (instance->requestorId && !reason) {
4154 retval = 1;
4155 goto out;
4156 }
4157
4158 /* If SR-IOV VF mode & I/O timeout, check for HB timeout */
4159 if (instance->requestorId && (reason == SCSIIO_TIMEOUT_OCR)) {
4160 if (instance->hb_host_mem->HB.fwCounter !=
4161 instance->hb_host_mem->HB.driverCounter) {
4162 instance->hb_host_mem->HB.driverCounter =
4163 instance->hb_host_mem->HB.fwCounter;
4164 hb_seconds_missed = 0;
4165 } else {
4166 hb_seconds_missed++;
4167 if (hb_seconds_missed ==
4168 (MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF/HZ)) {
4169 dev_warn(&instance->pdev->dev, "SR-IOV:"
4170 " Heartbeat never completed "
4171 " while polling during I/O "
4172 " timeout handling for "
4173 "scsi%d.\n",
4174 instance->host->host_no);
4175 *convert = 1;
4176 retval = 1;
4177 goto out;
4178 }
4179 }
4180 }
4181
4182 megasas_complete_cmd_dpc_fusion((unsigned long)instance);
4183 outstanding = atomic_read(&instance->fw_outstanding);
4184 if (!outstanding)
4185 goto out;
4186
4187 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
4188 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
4189 "commands to complete for scsi%d\n", i,
4190 outstanding, instance->host->host_no);
4191 }
4192 msleep(1000);
4193 }
4194
4195 if (instance->snapdump_wait_time) {
4196 megasas_trigger_snap_dump(instance);
4197 retval = 1;
4198 goto out;
4199 }
4200
4201 if (atomic_read(&instance->fw_outstanding)) {
4202 dev_err(&instance->pdev->dev, "pending commands remain after waiting, "
4203 "will reset adapter scsi%d.\n",
4204 instance->host->host_no);
4205 *convert = 1;
4206 retval = 1;
4207 }
4208
4209 out:
4210 return retval;
4211 }
4212
4213 void megasas_reset_reply_desc(struct megasas_instance *instance)
4214 {
4215 int i, j, count;
4216 struct fusion_context *fusion;
4217 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
4218
4219 fusion = instance->ctrl_context;
4220 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
4221 for (i = 0 ; i < count ; i++) {
4222 fusion->last_reply_idx[i] = 0;
4223 reply_desc = fusion->reply_frames_desc[i];
4224 for (j = 0 ; j < fusion->reply_q_depth; j++, reply_desc++)
4225 reply_desc->Words = cpu_to_le64(ULLONG_MAX);
4226 }
4227 }
4228
4229 /*
4230 * megasas_refire_mgmt_cmd : Re-fire management commands
4231 * @instance: Controller's soft instance
4232 */
4233 void megasas_refire_mgmt_cmd(struct megasas_instance *instance,
4234 bool return_ioctl)
4235 {
4236 int j;
4237 struct megasas_cmd_fusion *cmd_fusion;
4238 struct fusion_context *fusion;
4239 struct megasas_cmd *cmd_mfi;
4240 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
4241 u16 smid;
4242 bool refire_cmd = 0;
4243 u8 result;
4244 u32 opcode = 0;
4245
4246 fusion = instance->ctrl_context;
4247
4248 /* Re-fire management commands.
4249 * Do not traverse complet MPT frame pool. Start from max_scsi_cmds.
4250 */
4251 for (j = instance->max_scsi_cmds ; j < instance->max_fw_cmds; j++) {
4252 cmd_fusion = fusion->cmd_list[j];
4253 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
4254 smid = le16_to_cpu(cmd_mfi->context.smid);
4255 result = REFIRE_CMD;
4256
4257 if (!smid)
4258 continue;
4259
4260 req_desc = megasas_get_request_descriptor(instance, smid - 1);
4261
4262 switch (cmd_mfi->frame->hdr.cmd) {
4263 case MFI_CMD_DCMD:
4264 opcode = le32_to_cpu(cmd_mfi->frame->dcmd.opcode);
4265 /* Do not refire shutdown command */
4266 if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
4267 cmd_mfi->frame->dcmd.cmd_status = MFI_STAT_OK;
4268 result = COMPLETE_CMD;
4269 break;
4270 }
4271
4272 refire_cmd = ((opcode != MR_DCMD_LD_MAP_GET_INFO)) &&
4273 (opcode != MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
4274 !(cmd_mfi->flags & DRV_DCMD_SKIP_REFIRE);
4275
4276 if (!refire_cmd)
4277 result = RETURN_CMD;
4278
4279 break;
4280 case MFI_CMD_NVME:
4281 if (!instance->support_nvme_passthru) {
4282 cmd_mfi->frame->hdr.cmd_status = MFI_STAT_INVALID_CMD;
4283 result = COMPLETE_CMD;
4284 }
4285
4286 break;
4287 case MFI_CMD_TOOLBOX:
4288 if (!instance->support_pci_lane_margining) {
4289 cmd_mfi->frame->hdr.cmd_status = MFI_STAT_INVALID_CMD;
4290 result = COMPLETE_CMD;
4291 }
4292
4293 break;
4294 default:
4295 break;
4296 }
4297
4298 if (return_ioctl && cmd_mfi->sync_cmd &&
4299 cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT) {
4300 dev_err(&instance->pdev->dev,
4301 "return -EBUSY from %s %d cmd 0x%x opcode 0x%x\n",
4302 __func__, __LINE__, cmd_mfi->frame->hdr.cmd,
4303 le32_to_cpu(cmd_mfi->frame->dcmd.opcode));
4304 cmd_mfi->cmd_status_drv = DCMD_BUSY;
4305 result = COMPLETE_CMD;
4306 }
4307
4308 switch (result) {
4309 case REFIRE_CMD:
4310 megasas_fire_cmd_fusion(instance, req_desc);
4311 break;
4312 case RETURN_CMD:
4313 megasas_return_cmd(instance, cmd_mfi);
4314 break;
4315 case COMPLETE_CMD:
4316 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
4317 break;
4318 }
4319 }
4320 }
4321
4322 /*
4323 * megasas_return_polled_cmds: Return polled mode commands back to the pool
4324 * before initiating an OCR.
4325 * @instance: Controller's soft instance
4326 */
4327 static void
4328 megasas_return_polled_cmds(struct megasas_instance *instance)
4329 {
4330 int i;
4331 struct megasas_cmd_fusion *cmd_fusion;
4332 struct fusion_context *fusion;
4333 struct megasas_cmd *cmd_mfi;
4334
4335 fusion = instance->ctrl_context;
4336
4337 for (i = instance->max_scsi_cmds; i < instance->max_fw_cmds; i++) {
4338 cmd_fusion = fusion->cmd_list[i];
4339 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
4340
4341 if (cmd_mfi->flags & DRV_DCMD_POLLED_MODE) {
4342 if (megasas_dbg_lvl & OCR_DEBUG)
4343 dev_info(&instance->pdev->dev,
4344 "%s %d return cmd 0x%x opcode 0x%x\n",
4345 __func__, __LINE__, cmd_mfi->frame->hdr.cmd,
4346 le32_to_cpu(cmd_mfi->frame->dcmd.opcode));
4347 cmd_mfi->flags &= ~DRV_DCMD_POLLED_MODE;
4348 megasas_return_cmd(instance, cmd_mfi);
4349 }
4350 }
4351 }
4352
4353 /*
4354 * megasas_track_scsiio : Track SCSI IOs outstanding to a SCSI device
4355 * @instance: per adapter struct
4356 * @channel: the channel assigned by the OS
4357 * @id: the id assigned by the OS
4358 *
4359 * Returns SUCCESS if no IOs pending to SCSI device, else return FAILED
4360 */
4361
4362 static int megasas_track_scsiio(struct megasas_instance *instance,
4363 int id, int channel)
4364 {
4365 int i, found = 0;
4366 struct megasas_cmd_fusion *cmd_fusion;
4367 struct fusion_context *fusion;
4368 fusion = instance->ctrl_context;
4369
4370 for (i = 0 ; i < instance->max_scsi_cmds; i++) {
4371 cmd_fusion = fusion->cmd_list[i];
4372 if (cmd_fusion->scmd &&
4373 (cmd_fusion->scmd->device->id == id &&
4374 cmd_fusion->scmd->device->channel == channel)) {
4375 dev_info(&instance->pdev->dev,
4376 "SCSI commands pending to target"
4377 "channel %d id %d \tSMID: 0x%x\n",
4378 channel, id, cmd_fusion->index);
4379 scsi_print_command(cmd_fusion->scmd);
4380 found = 1;
4381 break;
4382 }
4383 }
4384
4385 return found ? FAILED : SUCCESS;
4386 }
4387
4388 /**
4389 * megasas_tm_response_code - translation of device response code
4390 * @ioc: per adapter object
4391 * @mpi_reply: MPI reply returned by firmware
4392 *
4393 * Return nothing.
4394 */
4395 static void
4396 megasas_tm_response_code(struct megasas_instance *instance,
4397 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply)
4398 {
4399 char *desc;
4400
4401 switch (mpi_reply->ResponseCode) {
4402 case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE:
4403 desc = "task management request completed";
4404 break;
4405 case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME:
4406 desc = "invalid frame";
4407 break;
4408 case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED:
4409 desc = "task management request not supported";
4410 break;
4411 case MPI2_SCSITASKMGMT_RSP_TM_FAILED:
4412 desc = "task management request failed";
4413 break;
4414 case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED:
4415 desc = "task management request succeeded";
4416 break;
4417 case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN:
4418 desc = "invalid lun";
4419 break;
4420 case 0xA:
4421 desc = "overlapped tag attempted";
4422 break;
4423 case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC:
4424 desc = "task queued, however not sent to target";
4425 break;
4426 default:
4427 desc = "unknown";
4428 break;
4429 }
4430 dev_dbg(&instance->pdev->dev, "response_code(%01x): %s\n",
4431 mpi_reply->ResponseCode, desc);
4432 dev_dbg(&instance->pdev->dev,
4433 "TerminationCount/DevHandle/Function/TaskType/IOCStat/IOCLoginfo"
4434 " 0x%x/0x%x/0x%x/0x%x/0x%x/0x%x\n",
4435 mpi_reply->TerminationCount, mpi_reply->DevHandle,
4436 mpi_reply->Function, mpi_reply->TaskType,
4437 mpi_reply->IOCStatus, mpi_reply->IOCLogInfo);
4438 }
4439
4440 /**
4441 * megasas_issue_tm - main routine for sending tm requests
4442 * @instance: per adapter struct
4443 * @device_handle: device handle
4444 * @channel: the channel assigned by the OS
4445 * @id: the id assigned by the OS
4446 * @type: MPI2_SCSITASKMGMT_TASKTYPE__XXX (defined in megaraid_sas_fusion.c)
4447 * @smid_task: smid assigned to the task
4448 * @m_type: TM_MUTEX_ON or TM_MUTEX_OFF
4449 * Context: user
4450 *
4451 * MegaRaid use MPT interface for Task Magement request.
4452 * A generic API for sending task management requests to firmware.
4453 *
4454 * Return SUCCESS or FAILED.
4455 */
4456 static int
4457 megasas_issue_tm(struct megasas_instance *instance, u16 device_handle,
4458 uint channel, uint id, u16 smid_task, u8 type,
4459 struct MR_PRIV_DEVICE *mr_device_priv_data)
4460 {
4461 struct MR_TASK_MANAGE_REQUEST *mr_request;
4462 struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_request;
4463 unsigned long timeleft;
4464 struct megasas_cmd_fusion *cmd_fusion;
4465 struct megasas_cmd *cmd_mfi;
4466 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
4467 struct fusion_context *fusion = NULL;
4468 struct megasas_cmd_fusion *scsi_lookup;
4469 int rc;
4470 int timeout = MEGASAS_DEFAULT_TM_TIMEOUT;
4471 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply;
4472
4473 fusion = instance->ctrl_context;
4474
4475 cmd_mfi = megasas_get_cmd(instance);
4476
4477 if (!cmd_mfi) {
4478 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
4479 __func__, __LINE__);
4480 return -ENOMEM;
4481 }
4482
4483 cmd_fusion = megasas_get_cmd_fusion(instance,
4484 instance->max_scsi_cmds + cmd_mfi->index);
4485
4486 /* Save the smid. To be used for returning the cmd */
4487 cmd_mfi->context.smid = cmd_fusion->index;
4488
4489 req_desc = megasas_get_request_descriptor(instance,
4490 (cmd_fusion->index - 1));
4491
4492 cmd_fusion->request_desc = req_desc;
4493 req_desc->Words = 0;
4494
4495 mr_request = (struct MR_TASK_MANAGE_REQUEST *) cmd_fusion->io_request;
4496 memset(mr_request, 0, sizeof(struct MR_TASK_MANAGE_REQUEST));
4497 mpi_request = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) &mr_request->TmRequest;
4498 mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
4499 mpi_request->DevHandle = cpu_to_le16(device_handle);
4500 mpi_request->TaskType = type;
4501 mpi_request->TaskMID = cpu_to_le16(smid_task);
4502 mpi_request->LUN[1] = 0;
4503
4504
4505 req_desc = cmd_fusion->request_desc;
4506 req_desc->HighPriority.SMID = cpu_to_le16(cmd_fusion->index);
4507 req_desc->HighPriority.RequestFlags =
4508 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
4509 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
4510 req_desc->HighPriority.MSIxIndex = 0;
4511 req_desc->HighPriority.LMID = 0;
4512 req_desc->HighPriority.Reserved1 = 0;
4513
4514 if (channel < MEGASAS_MAX_PD_CHANNELS)
4515 mr_request->tmReqFlags.isTMForPD = 1;
4516 else
4517 mr_request->tmReqFlags.isTMForLD = 1;
4518
4519 init_completion(&cmd_fusion->done);
4520 megasas_fire_cmd_fusion(instance, req_desc);
4521
4522 switch (type) {
4523 case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
4524 timeout = mr_device_priv_data->task_abort_tmo;
4525 break;
4526 case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
4527 timeout = mr_device_priv_data->target_reset_tmo;
4528 break;
4529 }
4530
4531 timeleft = wait_for_completion_timeout(&cmd_fusion->done, timeout * HZ);
4532
4533 if (!timeleft) {
4534 dev_err(&instance->pdev->dev,
4535 "task mgmt type 0x%x timed out\n", type);
4536 cmd_mfi->flags |= DRV_DCMD_SKIP_REFIRE;
4537 mutex_unlock(&instance->reset_mutex);
4538 rc = megasas_reset_fusion(instance->host, MFI_IO_TIMEOUT_OCR);
4539 mutex_lock(&instance->reset_mutex);
4540 return rc;
4541 }
4542
4543 mpi_reply = (struct MPI2_SCSI_TASK_MANAGE_REPLY *) &mr_request->TMReply;
4544 megasas_tm_response_code(instance, mpi_reply);
4545
4546 megasas_return_cmd(instance, cmd_mfi);
4547 rc = SUCCESS;
4548 switch (type) {
4549 case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
4550 scsi_lookup = fusion->cmd_list[smid_task - 1];
4551
4552 if (scsi_lookup->scmd == NULL)
4553 break;
4554 else {
4555 instance->instancet->disable_intr(instance);
4556 megasas_sync_irqs((unsigned long)instance);
4557 instance->instancet->enable_intr(instance);
4558 megasas_enable_irq_poll(instance);
4559 if (scsi_lookup->scmd == NULL)
4560 break;
4561 }
4562 rc = FAILED;
4563 break;
4564
4565 case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
4566 if ((channel == 0xFFFFFFFF) && (id == 0xFFFFFFFF))
4567 break;
4568 instance->instancet->disable_intr(instance);
4569 megasas_sync_irqs((unsigned long)instance);
4570 rc = megasas_track_scsiio(instance, id, channel);
4571 instance->instancet->enable_intr(instance);
4572 megasas_enable_irq_poll(instance);
4573
4574 break;
4575 case MPI2_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET:
4576 case MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK:
4577 break;
4578 default:
4579 rc = FAILED;
4580 break;
4581 }
4582
4583 return rc;
4584
4585 }
4586
4587 /*
4588 * megasas_fusion_smid_lookup : Look for fusion command correpspodning to SCSI
4589 * @instance: per adapter struct
4590 *
4591 * Return Non Zero index, if SMID found in outstanding commands
4592 */
4593 static u16 megasas_fusion_smid_lookup(struct scsi_cmnd *scmd)
4594 {
4595 int i, ret = 0;
4596 struct megasas_instance *instance;
4597 struct megasas_cmd_fusion *cmd_fusion;
4598 struct fusion_context *fusion;
4599
4600 instance = (struct megasas_instance *)scmd->device->host->hostdata;
4601
4602 fusion = instance->ctrl_context;
4603
4604 for (i = 0; i < instance->max_scsi_cmds; i++) {
4605 cmd_fusion = fusion->cmd_list[i];
4606 if (cmd_fusion->scmd && (cmd_fusion->scmd == scmd)) {
4607 scmd_printk(KERN_NOTICE, scmd, "Abort request is for"
4608 " SMID: %d\n", cmd_fusion->index);
4609 ret = cmd_fusion->index;
4610 break;
4611 }
4612 }
4613
4614 return ret;
4615 }
4616
4617 /*
4618 * megasas_get_tm_devhandle - Get devhandle for TM request
4619 * @sdev- OS provided scsi device
4620 *
4621 * Returns- devhandle/targetID of SCSI device
4622 */
4623 static u16 megasas_get_tm_devhandle(struct scsi_device *sdev)
4624 {
4625 u16 pd_index = 0;
4626 u32 device_id;
4627 struct megasas_instance *instance;
4628 struct fusion_context *fusion;
4629 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
4630 u16 devhandle = (u16)ULONG_MAX;
4631
4632 instance = (struct megasas_instance *)sdev->host->hostdata;
4633 fusion = instance->ctrl_context;
4634
4635 if (!MEGASAS_IS_LOGICAL(sdev)) {
4636 if (instance->use_seqnum_jbod_fp) {
4637 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL)
4638 + sdev->id;
4639 pd_sync = (void *)fusion->pd_seq_sync
4640 [(instance->pd_seq_map_id - 1) & 1];
4641 devhandle = pd_sync->seq[pd_index].devHandle;
4642 } else
4643 sdev_printk(KERN_ERR, sdev, "Firmware expose tmCapable"
4644 " without JBOD MAP support from %s %d\n", __func__, __LINE__);
4645 } else {
4646 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
4647 + sdev->id;
4648 devhandle = device_id;
4649 }
4650
4651 return devhandle;
4652 }
4653
4654 /*
4655 * megasas_task_abort_fusion : SCSI task abort function for fusion adapters
4656 * @scmd : pointer to scsi command object
4657 *
4658 * Return SUCCESS, if command aborted else FAILED
4659 */
4660
4661 int megasas_task_abort_fusion(struct scsi_cmnd *scmd)
4662 {
4663 struct megasas_instance *instance;
4664 u16 smid, devhandle;
4665 int ret;
4666 struct MR_PRIV_DEVICE *mr_device_priv_data;
4667 mr_device_priv_data = scmd->device->hostdata;
4668
4669 instance = (struct megasas_instance *)scmd->device->host->hostdata;
4670
4671 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
4672 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL,"
4673 "SCSI host:%d\n", instance->host->host_no);
4674 ret = FAILED;
4675 return ret;
4676 }
4677
4678 if (!mr_device_priv_data) {
4679 sdev_printk(KERN_INFO, scmd->device, "device been deleted! "
4680 "scmd(%p)\n", scmd);
4681 scmd->result = DID_NO_CONNECT << 16;
4682 ret = SUCCESS;
4683 goto out;
4684 }
4685
4686 if (!mr_device_priv_data->is_tm_capable) {
4687 ret = FAILED;
4688 goto out;
4689 }
4690
4691 mutex_lock(&instance->reset_mutex);
4692
4693 smid = megasas_fusion_smid_lookup(scmd);
4694
4695 if (!smid) {
4696 ret = SUCCESS;
4697 scmd_printk(KERN_NOTICE, scmd, "Command for which abort is"
4698 " issued is not found in outstanding commands\n");
4699 mutex_unlock(&instance->reset_mutex);
4700 goto out;
4701 }
4702
4703 devhandle = megasas_get_tm_devhandle(scmd->device);
4704
4705 if (devhandle == (u16)ULONG_MAX) {
4706 ret = SUCCESS;
4707 sdev_printk(KERN_INFO, scmd->device,
4708 "task abort issued for invalid devhandle\n");
4709 mutex_unlock(&instance->reset_mutex);
4710 goto out;
4711 }
4712 sdev_printk(KERN_INFO, scmd->device,
4713 "attempting task abort! scmd(0x%p) tm_dev_handle 0x%x\n",
4714 scmd, devhandle);
4715
4716 mr_device_priv_data->tm_busy = 1;
4717 ret = megasas_issue_tm(instance, devhandle,
4718 scmd->device->channel, scmd->device->id, smid,
4719 MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK,
4720 mr_device_priv_data);
4721 mr_device_priv_data->tm_busy = 0;
4722
4723 mutex_unlock(&instance->reset_mutex);
4724 scmd_printk(KERN_INFO, scmd, "task abort %s!! scmd(0x%p)\n",
4725 ((ret == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
4726 out:
4727 scsi_print_command(scmd);
4728 if (megasas_dbg_lvl & TM_DEBUG)
4729 megasas_dump_fusion_io(scmd);
4730
4731 return ret;
4732 }
4733
4734 /*
4735 * megasas_reset_target_fusion : target reset function for fusion adapters
4736 * scmd: SCSI command pointer
4737 *
4738 * Returns SUCCESS if all commands associated with target aborted else FAILED
4739 */
4740
4741 int megasas_reset_target_fusion(struct scsi_cmnd *scmd)
4742 {
4743
4744 struct megasas_instance *instance;
4745 int ret = FAILED;
4746 u16 devhandle;
4747 struct MR_PRIV_DEVICE *mr_device_priv_data;
4748 mr_device_priv_data = scmd->device->hostdata;
4749
4750 instance = (struct megasas_instance *)scmd->device->host->hostdata;
4751
4752 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
4753 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL,"
4754 "SCSI host:%d\n", instance->host->host_no);
4755 ret = FAILED;
4756 return ret;
4757 }
4758
4759 if (!mr_device_priv_data) {
4760 sdev_printk(KERN_INFO, scmd->device,
4761 "device been deleted! scmd: (0x%p)\n", scmd);
4762 scmd->result = DID_NO_CONNECT << 16;
4763 ret = SUCCESS;
4764 goto out;
4765 }
4766
4767 if (!mr_device_priv_data->is_tm_capable) {
4768 ret = FAILED;
4769 goto out;
4770 }
4771
4772 mutex_lock(&instance->reset_mutex);
4773 devhandle = megasas_get_tm_devhandle(scmd->device);
4774
4775 if (devhandle == (u16)ULONG_MAX) {
4776 ret = SUCCESS;
4777 sdev_printk(KERN_INFO, scmd->device,
4778 "target reset issued for invalid devhandle\n");
4779 mutex_unlock(&instance->reset_mutex);
4780 goto out;
4781 }
4782
4783 sdev_printk(KERN_INFO, scmd->device,
4784 "attempting target reset! scmd(0x%p) tm_dev_handle: 0x%x\n",
4785 scmd, devhandle);
4786 mr_device_priv_data->tm_busy = 1;
4787 ret = megasas_issue_tm(instance, devhandle,
4788 scmd->device->channel, scmd->device->id, 0,
4789 MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET,
4790 mr_device_priv_data);
4791 mr_device_priv_data->tm_busy = 0;
4792 mutex_unlock(&instance->reset_mutex);
4793 scmd_printk(KERN_NOTICE, scmd, "target reset %s!!\n",
4794 (ret == SUCCESS) ? "SUCCESS" : "FAILED");
4795
4796 out:
4797 return ret;
4798 }
4799
4800 /*SRIOV get other instance in cluster if any*/
4801 static struct
4802 megasas_instance *megasas_get_peer_instance(struct megasas_instance *instance)
4803 {
4804 int i;
4805
4806 for (i = 0; i < MAX_MGMT_ADAPTERS; i++) {
4807 if (megasas_mgmt_info.instance[i] &&
4808 (megasas_mgmt_info.instance[i] != instance) &&
4809 megasas_mgmt_info.instance[i]->requestorId &&
4810 megasas_mgmt_info.instance[i]->peerIsPresent &&
4811 (memcmp((megasas_mgmt_info.instance[i]->clusterId),
4812 instance->clusterId, MEGASAS_CLUSTER_ID_SIZE) == 0))
4813 return megasas_mgmt_info.instance[i];
4814 }
4815 return NULL;
4816 }
4817
4818 /* Check for a second path that is currently UP */
4819 int megasas_check_mpio_paths(struct megasas_instance *instance,
4820 struct scsi_cmnd *scmd)
4821 {
4822 struct megasas_instance *peer_instance = NULL;
4823 int retval = (DID_REQUEUE << 16);
4824
4825 if (instance->peerIsPresent) {
4826 peer_instance = megasas_get_peer_instance(instance);
4827 if ((peer_instance) &&
4828 (atomic_read(&peer_instance->adprecovery) ==
4829 MEGASAS_HBA_OPERATIONAL))
4830 retval = (DID_NO_CONNECT << 16);
4831 }
4832 return retval;
4833 }
4834
4835 /* Core fusion reset function */
4836 int megasas_reset_fusion(struct Scsi_Host *shost, int reason)
4837 {
4838 int retval = SUCCESS, i, j, convert = 0;
4839 struct megasas_instance *instance;
4840 struct megasas_cmd_fusion *cmd_fusion, *r1_cmd;
4841 struct fusion_context *fusion;
4842 u32 abs_state, status_reg, reset_adapter, fpio_count = 0;
4843 u32 io_timeout_in_crash_mode = 0;
4844 struct scsi_cmnd *scmd_local = NULL;
4845 struct scsi_device *sdev;
4846 int ret_target_prop = DCMD_FAILED;
4847 bool is_target_prop = false;
4848 bool do_adp_reset = true;
4849 int max_reset_tries = MEGASAS_FUSION_MAX_RESET_TRIES;
4850
4851 instance = (struct megasas_instance *)shost->hostdata;
4852 fusion = instance->ctrl_context;
4853
4854 mutex_lock(&instance->reset_mutex);
4855
4856 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
4857 dev_warn(&instance->pdev->dev, "Hardware critical error, "
4858 "returning FAILED for scsi%d.\n",
4859 instance->host->host_no);
4860 mutex_unlock(&instance->reset_mutex);
4861 return FAILED;
4862 }
4863 status_reg = instance->instancet->read_fw_status_reg(instance);
4864 abs_state = status_reg & MFI_STATE_MASK;
4865
4866 /* IO timeout detected, forcibly put FW in FAULT state */
4867 if (abs_state != MFI_STATE_FAULT && instance->crash_dump_buf &&
4868 instance->crash_dump_app_support && reason) {
4869 dev_info(&instance->pdev->dev, "IO/DCMD timeout is detected, "
4870 "forcibly FAULT Firmware\n");
4871 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4872 status_reg = megasas_readl(instance, &instance->reg_set->doorbell);
4873 writel(status_reg | MFI_STATE_FORCE_OCR,
4874 &instance->reg_set->doorbell);
4875 readl(&instance->reg_set->doorbell);
4876 mutex_unlock(&instance->reset_mutex);
4877 do {
4878 ssleep(3);
4879 io_timeout_in_crash_mode++;
4880 dev_dbg(&instance->pdev->dev, "waiting for [%d] "
4881 "seconds for crash dump collection and OCR "
4882 "to be done\n", (io_timeout_in_crash_mode * 3));
4883 } while ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
4884 (io_timeout_in_crash_mode < 80));
4885
4886 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) {
4887 dev_info(&instance->pdev->dev, "OCR done for IO "
4888 "timeout case\n");
4889 retval = SUCCESS;
4890 } else {
4891 dev_info(&instance->pdev->dev, "Controller is not "
4892 "operational after 240 seconds wait for IO "
4893 "timeout case in FW crash dump mode\n do "
4894 "OCR/kill adapter\n");
4895 retval = megasas_reset_fusion(shost, 0);
4896 }
4897 return retval;
4898 }
4899
4900 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
4901 del_timer_sync(&instance->sriov_heartbeat_timer);
4902 set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
4903 set_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE, &instance->reset_flags);
4904 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_POLLING);
4905 instance->instancet->disable_intr(instance);
4906 megasas_sync_irqs((unsigned long)instance);
4907
4908 /* First try waiting for commands to complete */
4909 if (megasas_wait_for_outstanding_fusion(instance, reason,
4910 &convert)) {
4911 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4912 dev_warn(&instance->pdev->dev, "resetting fusion "
4913 "adapter scsi%d.\n", instance->host->host_no);
4914 if (convert)
4915 reason = 0;
4916
4917 if (megasas_dbg_lvl & OCR_DEBUG)
4918 dev_info(&instance->pdev->dev, "\nPending SCSI commands:\n");
4919
4920 /* Now return commands back to the OS */
4921 for (i = 0 ; i < instance->max_scsi_cmds; i++) {
4922 cmd_fusion = fusion->cmd_list[i];
4923 /*check for extra commands issued by driver*/
4924 if (instance->adapter_type >= VENTURA_SERIES) {
4925 r1_cmd = fusion->cmd_list[i + instance->max_fw_cmds];
4926 megasas_return_cmd_fusion(instance, r1_cmd);
4927 }
4928 scmd_local = cmd_fusion->scmd;
4929 if (cmd_fusion->scmd) {
4930 if (megasas_dbg_lvl & OCR_DEBUG) {
4931 sdev_printk(KERN_INFO,
4932 cmd_fusion->scmd->device, "SMID: 0x%x\n",
4933 cmd_fusion->index);
4934 megasas_dump_fusion_io(cmd_fusion->scmd);
4935 }
4936
4937 if (cmd_fusion->io_request->Function ==
4938 MPI2_FUNCTION_SCSI_IO_REQUEST)
4939 fpio_count++;
4940
4941 scmd_local->result =
4942 megasas_check_mpio_paths(instance,
4943 scmd_local);
4944 if (instance->ldio_threshold &&
4945 megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)
4946 atomic_dec(&instance->ldio_outstanding);
4947 megasas_return_cmd_fusion(instance, cmd_fusion);
4948 scsi_dma_unmap(scmd_local);
4949 scmd_local->scsi_done(scmd_local);
4950 }
4951 }
4952
4953 dev_info(&instance->pdev->dev, "Outstanding fastpath IOs: %d\n",
4954 fpio_count);
4955
4956 atomic_set(&instance->fw_outstanding, 0);
4957
4958 status_reg = instance->instancet->read_fw_status_reg(instance);
4959 abs_state = status_reg & MFI_STATE_MASK;
4960 reset_adapter = status_reg & MFI_RESET_ADAPTER;
4961 if (instance->disableOnlineCtrlReset ||
4962 (abs_state == MFI_STATE_FAULT && !reset_adapter)) {
4963 /* Reset not supported, kill adapter */
4964 dev_warn(&instance->pdev->dev, "Reset not supported"
4965 ", killing adapter scsi%d.\n",
4966 instance->host->host_no);
4967 goto kill_hba;
4968 }
4969
4970 /* Let SR-IOV VF & PF sync up if there was a HB failure */
4971 if (instance->requestorId && !reason) {
4972 msleep(MEGASAS_OCR_SETTLE_TIME_VF);
4973 do_adp_reset = false;
4974 max_reset_tries = MEGASAS_SRIOV_MAX_RESET_TRIES_VF;
4975 }
4976
4977 /* Now try to reset the chip */
4978 for (i = 0; i < max_reset_tries; i++) {
4979 /*
4980 * Do adp reset and wait for
4981 * controller to transition to ready
4982 */
4983 if (megasas_adp_reset_wait_for_ready(instance,
4984 do_adp_reset, 1) == FAILED)
4985 continue;
4986
4987 /* Wait for FW to become ready */
4988 if (megasas_transition_to_ready(instance, 1)) {
4989 dev_warn(&instance->pdev->dev,
4990 "Failed to transition controller to ready for "
4991 "scsi%d.\n", instance->host->host_no);
4992 continue;
4993 }
4994 megasas_reset_reply_desc(instance);
4995 megasas_fusion_update_can_queue(instance, OCR_CONTEXT);
4996
4997 if (megasas_ioc_init_fusion(instance)) {
4998 continue;
4999 }
5000
5001 if (megasas_get_ctrl_info(instance)) {
5002 dev_info(&instance->pdev->dev,
5003 "Failed from %s %d\n",
5004 __func__, __LINE__);
5005 goto kill_hba;
5006 }
5007
5008 megasas_refire_mgmt_cmd(instance,
5009 (i == (MEGASAS_FUSION_MAX_RESET_TRIES - 1)
5010 ? 1 : 0));
5011
5012 /* Reset load balance info */
5013 if (fusion->load_balance_info)
5014 memset(fusion->load_balance_info, 0,
5015 (sizeof(struct LD_LOAD_BALANCE_INFO) *
5016 MAX_LOGICAL_DRIVES_EXT));
5017
5018 if (!megasas_get_map_info(instance)) {
5019 megasas_sync_map_info(instance);
5020 } else {
5021 /*
5022 * Return pending polled mode cmds before
5023 * retrying OCR
5024 */
5025 megasas_return_polled_cmds(instance);
5026 continue;
5027 }
5028
5029 megasas_setup_jbod_map(instance);
5030
5031 /* reset stream detection array */
5032 if (instance->adapter_type >= VENTURA_SERIES) {
5033 for (j = 0; j < MAX_LOGICAL_DRIVES_EXT; ++j) {
5034 memset(fusion->stream_detect_by_ld[j],
5035 0, sizeof(struct LD_STREAM_DETECT));
5036 fusion->stream_detect_by_ld[j]->mru_bit_map
5037 = MR_STREAM_BITMAP;
5038 }
5039 }
5040
5041 clear_bit(MEGASAS_FUSION_IN_RESET,
5042 &instance->reset_flags);
5043 instance->instancet->enable_intr(instance);
5044 megasas_enable_irq_poll(instance);
5045 shost_for_each_device(sdev, shost) {
5046 if ((instance->tgt_prop) &&
5047 (instance->nvme_page_size))
5048 ret_target_prop = megasas_get_target_prop(instance, sdev);
5049
5050 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
5051 megasas_set_dynamic_target_properties(sdev, is_target_prop);
5052 }
5053
5054 status_reg = instance->instancet->read_fw_status_reg
5055 (instance);
5056 abs_state = status_reg & MFI_STATE_MASK;
5057 if (abs_state != MFI_STATE_OPERATIONAL) {
5058 dev_info(&instance->pdev->dev,
5059 "Adapter is not OPERATIONAL, state 0x%x for scsi:%d\n",
5060 abs_state, instance->host->host_no);
5061 goto out;
5062 }
5063 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
5064
5065 dev_info(&instance->pdev->dev,
5066 "Adapter is OPERATIONAL for scsi:%d\n",
5067 instance->host->host_no);
5068
5069 /* Restart SR-IOV heartbeat */
5070 if (instance->requestorId) {
5071 if (!megasas_sriov_start_heartbeat(instance, 0))
5072 megasas_start_timer(instance);
5073 else
5074 instance->skip_heartbeat_timer_del = 1;
5075 }
5076
5077 if (instance->crash_dump_drv_support &&
5078 instance->crash_dump_app_support)
5079 megasas_set_crash_dump_params(instance,
5080 MR_CRASH_BUF_TURN_ON);
5081 else
5082 megasas_set_crash_dump_params(instance,
5083 MR_CRASH_BUF_TURN_OFF);
5084
5085 if (instance->snapdump_wait_time) {
5086 megasas_get_snapdump_properties(instance);
5087 dev_info(&instance->pdev->dev,
5088 "Snap dump wait time\t: %d\n",
5089 instance->snapdump_wait_time);
5090 }
5091
5092 retval = SUCCESS;
5093
5094 /* Adapter reset completed successfully */
5095 dev_warn(&instance->pdev->dev,
5096 "Reset successful for scsi%d.\n",
5097 instance->host->host_no);
5098
5099 goto out;
5100 }
5101 /* Reset failed, kill the adapter */
5102 dev_warn(&instance->pdev->dev, "Reset failed, killing "
5103 "adapter scsi%d.\n", instance->host->host_no);
5104 goto kill_hba;
5105 } else {
5106 /* For VF: Restart HB timer if we didn't OCR */
5107 if (instance->requestorId) {
5108 megasas_start_timer(instance);
5109 }
5110 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
5111 instance->instancet->enable_intr(instance);
5112 megasas_enable_irq_poll(instance);
5113 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
5114 goto out;
5115 }
5116 kill_hba:
5117 megaraid_sas_kill_hba(instance);
5118 megasas_enable_irq_poll(instance);
5119 instance->skip_heartbeat_timer_del = 1;
5120 retval = FAILED;
5121 out:
5122 clear_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE, &instance->reset_flags);
5123 mutex_unlock(&instance->reset_mutex);
5124 return retval;
5125 }
5126
5127 /* Fusion Crash dump collection */
5128 static void megasas_fusion_crash_dump(struct megasas_instance *instance)
5129 {
5130 u32 status_reg;
5131 u8 partial_copy = 0;
5132 int wait = 0;
5133
5134
5135 status_reg = instance->instancet->read_fw_status_reg(instance);
5136
5137 /*
5138 * Allocate host crash buffers to copy data from 1 MB DMA crash buffer
5139 * to host crash buffers
5140 */
5141 if (instance->drv_buf_index == 0) {
5142 /* Buffer is already allocated for old Crash dump.
5143 * Do OCR and do not wait for crash dump collection
5144 */
5145 if (instance->drv_buf_alloc) {
5146 dev_info(&instance->pdev->dev, "earlier crash dump is "
5147 "not yet copied by application, ignoring this "
5148 "crash dump and initiating OCR\n");
5149 status_reg |= MFI_STATE_CRASH_DUMP_DONE;
5150 writel(status_reg,
5151 &instance->reg_set->outbound_scratch_pad_0);
5152 readl(&instance->reg_set->outbound_scratch_pad_0);
5153 return;
5154 }
5155 megasas_alloc_host_crash_buffer(instance);
5156 dev_info(&instance->pdev->dev, "Number of host crash buffers "
5157 "allocated: %d\n", instance->drv_buf_alloc);
5158 }
5159
5160 while (!(status_reg & MFI_STATE_CRASH_DUMP_DONE) &&
5161 (wait < MEGASAS_WATCHDOG_WAIT_COUNT)) {
5162 if (!(status_reg & MFI_STATE_DMADONE)) {
5163 /*
5164 * Next crash dump buffer is not yet DMA'd by FW
5165 * Check after 10ms. Wait for 1 second for FW to
5166 * post the next buffer. If not bail out.
5167 */
5168 wait++;
5169 msleep(MEGASAS_WAIT_FOR_NEXT_DMA_MSECS);
5170 status_reg = instance->instancet->read_fw_status_reg(
5171 instance);
5172 continue;
5173 }
5174
5175 wait = 0;
5176 if (instance->drv_buf_index >= instance->drv_buf_alloc) {
5177 dev_info(&instance->pdev->dev,
5178 "Driver is done copying the buffer: %d\n",
5179 instance->drv_buf_alloc);
5180 status_reg |= MFI_STATE_CRASH_DUMP_DONE;
5181 partial_copy = 1;
5182 break;
5183 } else {
5184 memcpy(instance->crash_buf[instance->drv_buf_index],
5185 instance->crash_dump_buf, CRASH_DMA_BUF_SIZE);
5186 instance->drv_buf_index++;
5187 status_reg &= ~MFI_STATE_DMADONE;
5188 }
5189
5190 writel(status_reg, &instance->reg_set->outbound_scratch_pad_0);
5191 readl(&instance->reg_set->outbound_scratch_pad_0);
5192
5193 msleep(MEGASAS_WAIT_FOR_NEXT_DMA_MSECS);
5194 status_reg = instance->instancet->read_fw_status_reg(instance);
5195 }
5196
5197 if (status_reg & MFI_STATE_CRASH_DUMP_DONE) {
5198 dev_info(&instance->pdev->dev, "Crash Dump is available,number "
5199 "of copied buffers: %d\n", instance->drv_buf_index);
5200 instance->fw_crash_buffer_size = instance->drv_buf_index;
5201 instance->fw_crash_state = AVAILABLE;
5202 instance->drv_buf_index = 0;
5203 writel(status_reg, &instance->reg_set->outbound_scratch_pad_0);
5204 readl(&instance->reg_set->outbound_scratch_pad_0);
5205 if (!partial_copy)
5206 megasas_reset_fusion(instance->host, 0);
5207 }
5208 }
5209
5210
5211 /* Fusion OCR work queue */
5212 void megasas_fusion_ocr_wq(struct work_struct *work)
5213 {
5214 struct megasas_instance *instance =
5215 container_of(work, struct megasas_instance, work_init);
5216
5217 megasas_reset_fusion(instance->host, 0);
5218 }
5219
5220 /* Allocate fusion context */
5221 int
5222 megasas_alloc_fusion_context(struct megasas_instance *instance)
5223 {
5224 struct fusion_context *fusion;
5225
5226 instance->ctrl_context = kzalloc(sizeof(struct fusion_context),
5227 GFP_KERNEL);
5228 if (!instance->ctrl_context) {
5229 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
5230 __func__, __LINE__);
5231 return -ENOMEM;
5232 }
5233
5234 fusion = instance->ctrl_context;
5235
5236 fusion->log_to_span_pages = get_order(MAX_LOGICAL_DRIVES_EXT *
5237 sizeof(LD_SPAN_INFO));
5238 fusion->log_to_span =
5239 (PLD_SPAN_INFO)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
5240 fusion->log_to_span_pages);
5241 if (!fusion->log_to_span) {
5242 fusion->log_to_span =
5243 vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT,
5244 sizeof(LD_SPAN_INFO)));
5245 if (!fusion->log_to_span) {
5246 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
5247 __func__, __LINE__);
5248 return -ENOMEM;
5249 }
5250 }
5251
5252 fusion->load_balance_info_pages = get_order(MAX_LOGICAL_DRIVES_EXT *
5253 sizeof(struct LD_LOAD_BALANCE_INFO));
5254 fusion->load_balance_info =
5255 (struct LD_LOAD_BALANCE_INFO *)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
5256 fusion->load_balance_info_pages);
5257 if (!fusion->load_balance_info) {
5258 fusion->load_balance_info =
5259 vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT,
5260 sizeof(struct LD_LOAD_BALANCE_INFO)));
5261 if (!fusion->load_balance_info)
5262 dev_err(&instance->pdev->dev, "Failed to allocate load_balance_info, "
5263 "continuing without Load Balance support\n");
5264 }
5265
5266 return 0;
5267 }
5268
5269 void
5270 megasas_free_fusion_context(struct megasas_instance *instance)
5271 {
5272 struct fusion_context *fusion = instance->ctrl_context;
5273
5274 if (fusion) {
5275 if (fusion->load_balance_info) {
5276 if (is_vmalloc_addr(fusion->load_balance_info))
5277 vfree(fusion->load_balance_info);
5278 else
5279 free_pages((ulong)fusion->load_balance_info,
5280 fusion->load_balance_info_pages);
5281 }
5282
5283 if (fusion->log_to_span) {
5284 if (is_vmalloc_addr(fusion->log_to_span))
5285 vfree(fusion->log_to_span);
5286 else
5287 free_pages((ulong)fusion->log_to_span,
5288 fusion->log_to_span_pages);
5289 }
5290
5291 kfree(fusion);
5292 }
5293 }
5294
5295 struct megasas_instance_template megasas_instance_template_fusion = {
5296 .enable_intr = megasas_enable_intr_fusion,
5297 .disable_intr = megasas_disable_intr_fusion,
5298 .clear_intr = megasas_clear_intr_fusion,
5299 .read_fw_status_reg = megasas_read_fw_status_reg_fusion,
5300 .adp_reset = megasas_adp_reset_fusion,
5301 .check_reset = megasas_check_reset_fusion,
5302 .service_isr = megasas_isr_fusion,
5303 .tasklet = megasas_complete_cmd_dpc_fusion,
5304 .init_adapter = megasas_init_adapter_fusion,
5305 .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion,
5306 .issue_dcmd = megasas_issue_dcmd_fusion,
5307 };
Linux with added FPC-III support