?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / scsi / megaraid / megaraid_sas_fusion.c
blobf3b36fd0a0ebd6f5d09690f12b20f4360d12ea47
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, &fusion->io_request_frames_phys);
627 if (!fusion->io_request_frames) {
628 if (instance->max_fw_cmds >= (MEGASAS_REDUCE_QD_COUNT * 2)) {
629 instance->max_fw_cmds -= MEGASAS_REDUCE_QD_COUNT;
630 dma_pool_destroy(fusion->io_request_frames_pool);
631 megasas_configure_queue_sizes(instance);
632 goto retry_alloc;
633 } else {
634 dev_err(&instance->pdev->dev,
635 "Failed from %s %d\n", __func__, __LINE__);
636 return -ENOMEM;
637 }
638 }
639
640 if (!megasas_check_same_4gb_region(instance,
641 fusion->io_request_frames_phys,
642 fusion->io_frames_alloc_sz)) {
643 dma_pool_free(fusion->io_request_frames_pool,
644 fusion->io_request_frames,
645 fusion->io_request_frames_phys);
646 fusion->io_request_frames = NULL;
647 dma_pool_destroy(fusion->io_request_frames_pool);
648
649 fusion->io_request_frames_pool =
650 dma_pool_create("mr_ioreq_align",
651 &instance->pdev->dev,
652 fusion->io_frames_alloc_sz,
653 roundup_pow_of_two(fusion->io_frames_alloc_sz),
654 0);
655
656 if (!fusion->io_request_frames_pool) {
657 dev_err(&instance->pdev->dev,
658 "Failed from %s %d\n", __func__, __LINE__);
659 return -ENOMEM;
660 }
661
662 fusion->io_request_frames =
663 dma_pool_alloc(fusion->io_request_frames_pool,
664 GFP_KERNEL,
665 &fusion->io_request_frames_phys);
666
667 if (!fusion->io_request_frames) {
668 dev_err(&instance->pdev->dev,
669 "Failed from %s %d\n", __func__, __LINE__);
670 return -ENOMEM;
671 }
672 }
673
674 fusion->req_frames_desc =
675 dma_alloc_coherent(&instance->pdev->dev,
676 fusion->request_alloc_sz,
677 &fusion->req_frames_desc_phys, GFP_KERNEL);
678 if (!fusion->req_frames_desc) {
679 dev_err(&instance->pdev->dev,
680 "Failed from %s %d\n", __func__, __LINE__);
681 return -ENOMEM;
682 }
683
684 return 0;
685 }
686
687 static int
688 megasas_alloc_reply_fusion(struct megasas_instance *instance)
689 {
690 int i, count;
691 struct fusion_context *fusion;
692 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
693 fusion = instance->ctrl_context;
694
695 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
696 fusion->reply_frames_desc_pool =
697 dma_pool_create("mr_reply", &instance->pdev->dev,
698 fusion->reply_alloc_sz * count, 16, 0);
699
700 if (!fusion->reply_frames_desc_pool) {
701 dev_err(&instance->pdev->dev,
702 "Failed from %s %d\n", __func__, __LINE__);
703 return -ENOMEM;
704 }
705
706 fusion->reply_frames_desc[0] =
707 dma_pool_alloc(fusion->reply_frames_desc_pool,
708 GFP_KERNEL, &fusion->reply_frames_desc_phys[0]);
709 if (!fusion->reply_frames_desc[0]) {
710 dev_err(&instance->pdev->dev,
711 "Failed from %s %d\n", __func__, __LINE__);
712 return -ENOMEM;
713 }
714
715 if (!megasas_check_same_4gb_region(instance,
716 fusion->reply_frames_desc_phys[0],
717 (fusion->reply_alloc_sz * count))) {
718 dma_pool_free(fusion->reply_frames_desc_pool,
719 fusion->reply_frames_desc[0],
720 fusion->reply_frames_desc_phys[0]);
721 fusion->reply_frames_desc[0] = NULL;
722 dma_pool_destroy(fusion->reply_frames_desc_pool);
723
724 fusion->reply_frames_desc_pool =
725 dma_pool_create("mr_reply_align",
726 &instance->pdev->dev,
727 fusion->reply_alloc_sz * count,
728 roundup_pow_of_two(fusion->reply_alloc_sz * count),
729 0);
730
731 if (!fusion->reply_frames_desc_pool) {
732 dev_err(&instance->pdev->dev,
733 "Failed from %s %d\n", __func__, __LINE__);
734 return -ENOMEM;
735 }
736
737 fusion->reply_frames_desc[0] =
738 dma_pool_alloc(fusion->reply_frames_desc_pool,
739 GFP_KERNEL,
740 &fusion->reply_frames_desc_phys[0]);
741
742 if (!fusion->reply_frames_desc[0]) {
743 dev_err(&instance->pdev->dev,
744 "Failed from %s %d\n", __func__, __LINE__);
745 return -ENOMEM;
746 }
747 }
748
749 reply_desc = fusion->reply_frames_desc[0];
750 for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++)
751 reply_desc->Words = cpu_to_le64(ULLONG_MAX);
752
753 /* This is not a rdpq mode, but driver still populate
754 * reply_frame_desc array to use same msix index in ISR path.
755 */
756 for (i = 0; i < (count - 1); i++)
757 fusion->reply_frames_desc[i + 1] =
758 fusion->reply_frames_desc[i] +
759 (fusion->reply_alloc_sz)/sizeof(union MPI2_REPLY_DESCRIPTORS_UNION);
760
761 return 0;
762 }
763
764 static int
765 megasas_alloc_rdpq_fusion(struct megasas_instance *instance)
766 {
767 int i, j, k, msix_count;
768 struct fusion_context *fusion;
769 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
770 union MPI2_REPLY_DESCRIPTORS_UNION *rdpq_chunk_virt[RDPQ_MAX_CHUNK_COUNT];
771 dma_addr_t rdpq_chunk_phys[RDPQ_MAX_CHUNK_COUNT];
772 u8 dma_alloc_count, abs_index;
773 u32 chunk_size, array_size, offset;
774
775 fusion = instance->ctrl_context;
776 chunk_size = fusion->reply_alloc_sz * RDPQ_MAX_INDEX_IN_ONE_CHUNK;
777 array_size = sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) *
778 MAX_MSIX_QUEUES_FUSION;
779
780 fusion->rdpq_virt = dma_alloc_coherent(&instance->pdev->dev,
781 array_size, &fusion->rdpq_phys,
782 GFP_KERNEL);
783 if (!fusion->rdpq_virt) {
784 dev_err(&instance->pdev->dev,
785 "Failed from %s %d\n", __func__, __LINE__);
786 return -ENOMEM;
787 }
788
789 msix_count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
790
791 fusion->reply_frames_desc_pool = dma_pool_create("mr_rdpq",
792 &instance->pdev->dev,
793 chunk_size, 16, 0);
794 fusion->reply_frames_desc_pool_align =
795 dma_pool_create("mr_rdpq_align",
796 &instance->pdev->dev,
797 chunk_size,
798 roundup_pow_of_two(chunk_size),
799 0);
800
801 if (!fusion->reply_frames_desc_pool ||
802 !fusion->reply_frames_desc_pool_align) {
803 dev_err(&instance->pdev->dev,
804 "Failed from %s %d\n", __func__, __LINE__);
805 return -ENOMEM;
806 }
807
808 /*
809 * For INVADER_SERIES each set of 8 reply queues(0-7, 8-15, ..) and
810 * VENTURA_SERIES each set of 16 reply queues(0-15, 16-31, ..) should be
811 * within 4GB boundary and also reply queues in a set must have same
812 * upper 32-bits in their memory address. so here driver is allocating the
813 * DMA'able memory for reply queues according. Driver uses limitation of
814 * VENTURA_SERIES to manage INVADER_SERIES as well.
815 */
816 dma_alloc_count = DIV_ROUND_UP(msix_count, RDPQ_MAX_INDEX_IN_ONE_CHUNK);
817
818 for (i = 0; i < dma_alloc_count; i++) {
819 rdpq_chunk_virt[i] =
820 dma_pool_alloc(fusion->reply_frames_desc_pool,
821 GFP_KERNEL, &rdpq_chunk_phys[i]);
822 if (!rdpq_chunk_virt[i]) {
823 dev_err(&instance->pdev->dev,
824 "Failed from %s %d\n", __func__, __LINE__);
825 return -ENOMEM;
826 }
827 /* reply desc pool requires to be in same 4 gb region.
828 * Below function will check this.
829 * In case of failure, new pci pool will be created with updated
830 * alignment.
831 * For RDPQ buffers, driver always allocate two separate pci pool.
832 * Alignment will be used such a way that next allocation if
833 * success, will always meet same 4gb region requirement.
834 * rdpq_tracker keep track of each buffer's physical,
835 * virtual address and pci pool descriptor. It will help driver
836 * while freeing the resources.
837 *
838 */
839 if (!megasas_check_same_4gb_region(instance, rdpq_chunk_phys[i],
840 chunk_size)) {
841 dma_pool_free(fusion->reply_frames_desc_pool,
842 rdpq_chunk_virt[i],
843 rdpq_chunk_phys[i]);
844
845 rdpq_chunk_virt[i] =
846 dma_pool_alloc(fusion->reply_frames_desc_pool_align,
847 GFP_KERNEL, &rdpq_chunk_phys[i]);
848 if (!rdpq_chunk_virt[i]) {
849 dev_err(&instance->pdev->dev,
850 "Failed from %s %d\n",
851 __func__, __LINE__);
852 return -ENOMEM;
853 }
854 fusion->rdpq_tracker[i].dma_pool_ptr =
855 fusion->reply_frames_desc_pool_align;
856 } else {
857 fusion->rdpq_tracker[i].dma_pool_ptr =
858 fusion->reply_frames_desc_pool;
859 }
860
861 fusion->rdpq_tracker[i].pool_entry_phys = rdpq_chunk_phys[i];
862 fusion->rdpq_tracker[i].pool_entry_virt = rdpq_chunk_virt[i];
863 }
864
865 for (k = 0; k < dma_alloc_count; k++) {
866 for (i = 0; i < RDPQ_MAX_INDEX_IN_ONE_CHUNK; i++) {
867 abs_index = (k * RDPQ_MAX_INDEX_IN_ONE_CHUNK) + i;
868
869 if (abs_index == msix_count)
870 break;
871 offset = fusion->reply_alloc_sz * i;
872 fusion->rdpq_virt[abs_index].RDPQBaseAddress =
873 cpu_to_le64(rdpq_chunk_phys[k] + offset);
874 fusion->reply_frames_desc_phys[abs_index] =
875 rdpq_chunk_phys[k] + offset;
876 fusion->reply_frames_desc[abs_index] =
877 (union MPI2_REPLY_DESCRIPTORS_UNION *)((u8 *)rdpq_chunk_virt[k] + offset);
878
879 reply_desc = fusion->reply_frames_desc[abs_index];
880 for (j = 0; j < fusion->reply_q_depth; j++, reply_desc++)
881 reply_desc->Words = ULLONG_MAX;
882 }
883 }
884
885 return 0;
886 }
887
888 static void
889 megasas_free_rdpq_fusion(struct megasas_instance *instance) {
890
891 int i;
892 struct fusion_context *fusion;
893
894 fusion = instance->ctrl_context;
895
896 for (i = 0; i < RDPQ_MAX_CHUNK_COUNT; i++) {
897 if (fusion->rdpq_tracker[i].pool_entry_virt)
898 dma_pool_free(fusion->rdpq_tracker[i].dma_pool_ptr,
899 fusion->rdpq_tracker[i].pool_entry_virt,
900 fusion->rdpq_tracker[i].pool_entry_phys);
901
902 }
903
904 dma_pool_destroy(fusion->reply_frames_desc_pool);
905 dma_pool_destroy(fusion->reply_frames_desc_pool_align);
906
907 if (fusion->rdpq_virt)
908 dma_free_coherent(&instance->pdev->dev,
909 sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * MAX_MSIX_QUEUES_FUSION,
910 fusion->rdpq_virt, fusion->rdpq_phys);
911 }
912
913 static void
914 megasas_free_reply_fusion(struct megasas_instance *instance) {
915
916 struct fusion_context *fusion;
917
918 fusion = instance->ctrl_context;
919
920 if (fusion->reply_frames_desc[0])
921 dma_pool_free(fusion->reply_frames_desc_pool,
922 fusion->reply_frames_desc[0],
923 fusion->reply_frames_desc_phys[0]);
924
925 dma_pool_destroy(fusion->reply_frames_desc_pool);
926
927 }
928
929
930 /**
931 * megasas_alloc_cmds_fusion - Allocates the command packets
932 * @instance: Adapter soft state
933 *
934 *
935 * Each frame has a 32-bit field called context. This context is used to get
936 * back the megasas_cmd_fusion from the frame when a frame gets completed
937 * In this driver, the 32 bit values are the indices into an array cmd_list.
938 * This array is used only to look up the megasas_cmd_fusion given the context.
939 * The free commands themselves are maintained in a linked list called cmd_pool.
940 *
941 * cmds are formed in the io_request and sg_frame members of the
942 * megasas_cmd_fusion. The context field is used to get a request descriptor
943 * and is used as SMID of the cmd.
944 * SMID value range is from 1 to max_fw_cmds.
945 */
946 static int
947 megasas_alloc_cmds_fusion(struct megasas_instance *instance)
948 {
949 int i;
950 struct fusion_context *fusion;
951 struct megasas_cmd_fusion *cmd;
952 u32 offset;
953 dma_addr_t io_req_base_phys;
954 u8 *io_req_base;
955
956
957 fusion = instance->ctrl_context;
958
959 if (megasas_alloc_request_fusion(instance))
960 goto fail_exit;
961
962 if (instance->is_rdpq) {
963 if (megasas_alloc_rdpq_fusion(instance))
964 goto fail_exit;
965 } else
966 if (megasas_alloc_reply_fusion(instance))
967 goto fail_exit;
968
969 if (megasas_alloc_cmdlist_fusion(instance))
970 goto fail_exit;
971
972 dev_info(&instance->pdev->dev, "Configured max firmware commands: %d\n",
973 instance->max_fw_cmds);
974
975 /* The first 256 bytes (SMID 0) is not used. Don't add to the cmd list */
976 io_req_base = fusion->io_request_frames + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
977 io_req_base_phys = fusion->io_request_frames_phys + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
978
979 /*
980 * Add all the commands to command pool (fusion->cmd_pool)
981 */
982
983 /* SMID 0 is reserved. Set SMID/index from 1 */
984 for (i = 0; i < instance->max_mpt_cmds; i++) {
985 cmd = fusion->cmd_list[i];
986 offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i;
987 memset(cmd, 0, sizeof(struct megasas_cmd_fusion));
988 cmd->index = i + 1;
989 cmd->scmd = NULL;
990 cmd->sync_cmd_idx =
991 (i >= instance->max_scsi_cmds && i < instance->max_fw_cmds) ?
992 (i - instance->max_scsi_cmds) :
993 (u32)ULONG_MAX; /* Set to Invalid */
994 cmd->instance = instance;
995 cmd->io_request =
996 (struct MPI2_RAID_SCSI_IO_REQUEST *)
997 (io_req_base + offset);
998 memset(cmd->io_request, 0,
999 sizeof(struct MPI2_RAID_SCSI_IO_REQUEST));
1000 cmd->io_request_phys_addr = io_req_base_phys + offset;
1001 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
1002 }
1003
1004 if (megasas_create_sg_sense_fusion(instance))
1005 goto fail_exit;
1006
1007 return 0;
1008
1009 fail_exit:
1010 megasas_free_cmds_fusion(instance);
1011 return -ENOMEM;
1012 }
1013
1014 /**
1015 * wait_and_poll - Issues a polling command
1016 * @instance: Adapter soft state
1017 * @cmd: Command packet to be issued
1018 *
1019 * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
1020 */
1021 int
1022 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
1023 int seconds)
1024 {
1025 int i;
1026 struct megasas_header *frame_hdr = &cmd->frame->hdr;
1027 u32 status_reg;
1028
1029 u32 msecs = seconds * 1000;
1030
1031 /*
1032 * Wait for cmd_status to change
1033 */
1034 for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) {
1035 rmb();
1036 msleep(20);
1037 if (!(i % 5000)) {
1038 status_reg = instance->instancet->read_fw_status_reg(instance)
1039 & MFI_STATE_MASK;
1040 if (status_reg == MFI_STATE_FAULT)
1041 break;
1042 }
1043 }
1044
1045 if (frame_hdr->cmd_status == MFI_STAT_INVALID_STATUS)
1046 return DCMD_TIMEOUT;
1047 else if (frame_hdr->cmd_status == MFI_STAT_OK)
1048 return DCMD_SUCCESS;
1049 else
1050 return DCMD_FAILED;
1051 }
1052
1053 /**
1054 * megasas_ioc_init_fusion - Initializes the FW
1055 * @instance: Adapter soft state
1056 *
1057 * Issues the IOC Init cmd
1058 */
1059 int
1060 megasas_ioc_init_fusion(struct megasas_instance *instance)
1061 {
1062 struct megasas_init_frame *init_frame;
1063 struct MPI2_IOC_INIT_REQUEST *IOCInitMessage = NULL;
1064 dma_addr_t ioc_init_handle;
1065 struct megasas_cmd *cmd;
1066 u8 ret, cur_rdpq_mode;
1067 struct fusion_context *fusion;
1068 union MEGASAS_REQUEST_DESCRIPTOR_UNION req_desc;
1069 int i;
1070 struct megasas_header *frame_hdr;
1071 const char *sys_info;
1072 MFI_CAPABILITIES *drv_ops;
1073 u32 scratch_pad_1;
1074 ktime_t time;
1075 bool cur_fw_64bit_dma_capable;
1076 bool cur_intr_coalescing;
1077
1078 fusion = instance->ctrl_context;
1079
1080 ioc_init_handle = fusion->ioc_init_request_phys;
1081 IOCInitMessage = fusion->ioc_init_request;
1082
1083 cmd = fusion->ioc_init_cmd;
1084
1085 scratch_pad_1 = megasas_readl
1086 (instance, &instance->reg_set->outbound_scratch_pad_1);
1087
1088 cur_rdpq_mode = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ? 1 : 0;
1089
1090 if (instance->adapter_type == INVADER_SERIES) {
1091 cur_fw_64bit_dma_capable =
1092 (scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET) ? true : false;
1093
1094 if (instance->consistent_mask_64bit && !cur_fw_64bit_dma_capable) {
1095 dev_err(&instance->pdev->dev, "Driver was operating on 64bit "
1096 "DMA mask, but upcoming FW does not support 64bit DMA mask\n");
1097 megaraid_sas_kill_hba(instance);
1098 ret = 1;
1099 goto fail_fw_init;
1100 }
1101 }
1102
1103 if (instance->is_rdpq && !cur_rdpq_mode) {
1104 dev_err(&instance->pdev->dev, "Firmware downgrade *NOT SUPPORTED*"
1105 " from RDPQ mode to non RDPQ mode\n");
1106 ret = 1;
1107 goto fail_fw_init;
1108 }
1109
1110 cur_intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ?
1111 true : false;
1112
1113 if ((instance->low_latency_index_start ==
1114 MR_HIGH_IOPS_QUEUE_COUNT) && cur_intr_coalescing)
1115 instance->perf_mode = MR_BALANCED_PERF_MODE;
1116
1117 dev_info(&instance->pdev->dev, "Performance mode :%s\n",
1118 MEGASAS_PERF_MODE_2STR(instance->perf_mode));
1119
1120 instance->fw_sync_cache_support = (scratch_pad_1 &
1121 MR_CAN_HANDLE_SYNC_CACHE_OFFSET) ? 1 : 0;
1122 dev_info(&instance->pdev->dev, "FW supports sync cache\t: %s\n",
1123 instance->fw_sync_cache_support ? "Yes" : "No");
1124
1125 memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST));
1126
1127 IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT;
1128 IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER;
1129 IOCInitMessage->MsgVersion = cpu_to_le16(MPI2_VERSION);
1130 IOCInitMessage->HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION);
1131 IOCInitMessage->SystemRequestFrameSize = cpu_to_le16(MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4);
1132
1133 IOCInitMessage->ReplyDescriptorPostQueueDepth = cpu_to_le16(fusion->reply_q_depth);
1134 IOCInitMessage->ReplyDescriptorPostQueueAddress = instance->is_rdpq ?
1135 cpu_to_le64(fusion->rdpq_phys) :
1136 cpu_to_le64(fusion->reply_frames_desc_phys[0]);
1137 IOCInitMessage->MsgFlags = instance->is_rdpq ?
1138 MPI2_IOCINIT_MSGFLAG_RDPQ_ARRAY_MODE : 0;
1139 IOCInitMessage->SystemRequestFrameBaseAddress = cpu_to_le64(fusion->io_request_frames_phys);
1140 IOCInitMessage->SenseBufferAddressHigh = cpu_to_le32(upper_32_bits(fusion->sense_phys_addr));
1141 IOCInitMessage->HostMSIxVectors = instance->msix_vectors;
1142 IOCInitMessage->HostPageSize = MR_DEFAULT_NVME_PAGE_SHIFT;
1143
1144 time = ktime_get_real();
1145 /* Convert to milliseconds as per FW requirement */
1146 IOCInitMessage->TimeStamp = cpu_to_le64(ktime_to_ms(time));
1147
1148 init_frame = (struct megasas_init_frame *)cmd->frame;
1149 memset(init_frame, 0, IOC_INIT_FRAME_SIZE);
1150
1151 frame_hdr = &cmd->frame->hdr;
1152 frame_hdr->cmd_status = 0xFF;
1153 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
1154
1155 init_frame->cmd = MFI_CMD_INIT;
1156 init_frame->cmd_status = 0xFF;
1157
1158 drv_ops = (MFI_CAPABILITIES *) &(init_frame->driver_operations);
1159
1160 /* driver support Extended MSIX */
1161 if (instance->adapter_type >= INVADER_SERIES)
1162 drv_ops->mfi_capabilities.support_additional_msix = 1;
1163 /* driver supports HA / Remote LUN over Fast Path interface */
1164 drv_ops->mfi_capabilities.support_fp_remote_lun = 1;
1165
1166 drv_ops->mfi_capabilities.support_max_255lds = 1;
1167 drv_ops->mfi_capabilities.support_ndrive_r1_lb = 1;
1168 drv_ops->mfi_capabilities.security_protocol_cmds_fw = 1;
1169
1170 if (instance->max_chain_frame_sz > MEGASAS_CHAIN_FRAME_SZ_MIN)
1171 drv_ops->mfi_capabilities.support_ext_io_size = 1;
1172
1173 drv_ops->mfi_capabilities.support_fp_rlbypass = 1;
1174 if (!dual_qdepth_disable)
1175 drv_ops->mfi_capabilities.support_ext_queue_depth = 1;
1176
1177 drv_ops->mfi_capabilities.support_qd_throttling = 1;
1178 drv_ops->mfi_capabilities.support_pd_map_target_id = 1;
1179 drv_ops->mfi_capabilities.support_nvme_passthru = 1;
1180 drv_ops->mfi_capabilities.support_fw_exposed_dev_list = 1;
1181
1182 if (instance->consistent_mask_64bit)
1183 drv_ops->mfi_capabilities.support_64bit_mode = 1;
1184
1185 /* Convert capability to LE32 */
1186 cpu_to_le32s((u32 *)&init_frame->driver_operations.mfi_capabilities);
1187
1188 sys_info = dmi_get_system_info(DMI_PRODUCT_UUID);
1189 if (instance->system_info_buf && sys_info) {
1190 memcpy(instance->system_info_buf->systemId, sys_info,
1191 strlen(sys_info) > 64 ? 64 : strlen(sys_info));
1192 instance->system_info_buf->systemIdLength =
1193 strlen(sys_info) > 64 ? 64 : strlen(sys_info);
1194 init_frame->system_info_lo = cpu_to_le32(lower_32_bits(instance->system_info_h));
1195 init_frame->system_info_hi = cpu_to_le32(upper_32_bits(instance->system_info_h));
1196 }
1197
1198 init_frame->queue_info_new_phys_addr_hi =
1199 cpu_to_le32(upper_32_bits(ioc_init_handle));
1200 init_frame->queue_info_new_phys_addr_lo =
1201 cpu_to_le32(lower_32_bits(ioc_init_handle));
1202 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct MPI2_IOC_INIT_REQUEST));
1203
1204 /*
1205 * Each bit in replyqueue_mask represents one group of MSI-x vectors
1206 * (each group has 8 vectors)
1207 */
1208 switch (instance->perf_mode) {
1209 case MR_BALANCED_PERF_MODE:
1210 init_frame->replyqueue_mask =
1211 cpu_to_le16(~(~0 << instance->low_latency_index_start/8));
1212 break;
1213 case MR_IOPS_PERF_MODE:
1214 init_frame->replyqueue_mask =
1215 cpu_to_le16(~(~0 << instance->msix_vectors/8));
1216 break;
1217 }
1218
1219
1220 req_desc.u.low = cpu_to_le32(lower_32_bits(cmd->frame_phys_addr));
1221 req_desc.u.high = cpu_to_le32(upper_32_bits(cmd->frame_phys_addr));
1222 req_desc.MFAIo.RequestFlags =
1223 (MEGASAS_REQ_DESCRIPT_FLAGS_MFA <<
1224 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1225
1226 /*
1227 * disable the intr before firing the init frame
1228 */
1229 instance->instancet->disable_intr(instance);
1230
1231 for (i = 0; i < (10 * 1000); i += 20) {
1232 if (megasas_readl(instance, &instance->reg_set->doorbell) & 1)
1233 msleep(20);
1234 else
1235 break;
1236 }
1237
1238 /* For AERO also, IOC_INIT requires 64 bit descriptor write */
1239 megasas_write_64bit_req_desc(instance, &req_desc);
1240
1241 wait_and_poll(instance, cmd, MFI_IO_TIMEOUT_SECS);
1242
1243 frame_hdr = &cmd->frame->hdr;
1244 if (frame_hdr->cmd_status != 0) {
1245 ret = 1;
1246 goto fail_fw_init;
1247 }
1248
1249 if (instance->adapter_type >= AERO_SERIES) {
1250 scratch_pad_1 = megasas_readl
1251 (instance, &instance->reg_set->outbound_scratch_pad_1);
1252
1253 instance->atomic_desc_support =
1254 (scratch_pad_1 & MR_ATOMIC_DESCRIPTOR_SUPPORT_OFFSET) ? 1 : 0;
1255
1256 dev_info(&instance->pdev->dev, "FW supports atomic descriptor\t: %s\n",
1257 instance->atomic_desc_support ? "Yes" : "No");
1258 }
1259
1260 return 0;
1261
1262 fail_fw_init:
1263 dev_err(&instance->pdev->dev,
1264 "Init cmd return status FAILED for SCSI host %d\n",
1265 instance->host->host_no);
1266
1267 return ret;
1268 }
1269
1270 /**
1271 * megasas_sync_pd_seq_num - JBOD SEQ MAP
1272 * @instance: Adapter soft state
1273 * @pend: set to 1, if it is pended jbod map.
1274 *
1275 * Issue Jbod map to the firmware. If it is pended command,
1276 * issue command and return. If it is first instance of jbod map
1277 * issue and receive command.
1278 */
1279 int
1280 megasas_sync_pd_seq_num(struct megasas_instance *instance, bool pend) {
1281 int ret = 0;
1282 size_t pd_seq_map_sz;
1283 struct megasas_cmd *cmd;
1284 struct megasas_dcmd_frame *dcmd;
1285 struct fusion_context *fusion = instance->ctrl_context;
1286 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1287 dma_addr_t pd_seq_h;
1288
1289 pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id & 1)];
1290 pd_seq_h = fusion->pd_seq_phys[(instance->pd_seq_map_id & 1)];
1291 pd_seq_map_sz = struct_size(pd_sync, seq, MAX_PHYSICAL_DEVICES - 1);
1292
1293 cmd = megasas_get_cmd(instance);
1294 if (!cmd) {
1295 dev_err(&instance->pdev->dev,
1296 "Could not get mfi cmd. Fail from %s %d\n",
1297 __func__, __LINE__);
1298 return -ENOMEM;
1299 }
1300
1301 dcmd = &cmd->frame->dcmd;
1302
1303 memset(pd_sync, 0, pd_seq_map_sz);
1304 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1305
1306 if (pend) {
1307 dcmd->mbox.b[0] = MEGASAS_DCMD_MBOX_PEND_FLAG;
1308 dcmd->flags = MFI_FRAME_DIR_WRITE;
1309 instance->jbod_seq_cmd = cmd;
1310 } else {
1311 dcmd->flags = MFI_FRAME_DIR_READ;
1312 }
1313
1314 dcmd->cmd = MFI_CMD_DCMD;
1315 dcmd->cmd_status = 0xFF;
1316 dcmd->sge_count = 1;
1317 dcmd->timeout = 0;
1318 dcmd->pad_0 = 0;
1319 dcmd->data_xfer_len = cpu_to_le32(pd_seq_map_sz);
1320 dcmd->opcode = cpu_to_le32(MR_DCMD_SYSTEM_PD_MAP_GET_INFO);
1321
1322 megasas_set_dma_settings(instance, dcmd, pd_seq_h, pd_seq_map_sz);
1323
1324 if (pend) {
1325 instance->instancet->issue_dcmd(instance, cmd);
1326 return 0;
1327 }
1328
1329 /* Below code is only for non pended DCMD */
1330 if (!instance->mask_interrupts)
1331 ret = megasas_issue_blocked_cmd(instance, cmd,
1332 MFI_IO_TIMEOUT_SECS);
1333 else
1334 ret = megasas_issue_polled(instance, cmd);
1335
1336 if (le32_to_cpu(pd_sync->count) > MAX_PHYSICAL_DEVICES) {
1337 dev_warn(&instance->pdev->dev,
1338 "driver supports max %d JBOD, but FW reports %d\n",
1339 MAX_PHYSICAL_DEVICES, le32_to_cpu(pd_sync->count));
1340 ret = -EINVAL;
1341 }
1342
1343 if (ret == DCMD_TIMEOUT)
1344 dev_warn(&instance->pdev->dev,
1345 "%s DCMD timed out, continue without JBOD sequence map\n",
1346 __func__);
1347
1348 if (ret == DCMD_SUCCESS)
1349 instance->pd_seq_map_id++;
1350
1351 megasas_return_cmd(instance, cmd);
1352 return ret;
1353 }
1354
1355 /*
1356 * megasas_get_ld_map_info - Returns FW's ld_map structure
1357 * @instance: Adapter soft state
1358 * @pend: Pend the command or not
1359 * Issues an internal command (DCMD) to get the FW's controller PD
1360 * list structure. This information is mainly used to find out SYSTEM
1361 * supported by the FW.
1362 * dcmd.mbox value setting for MR_DCMD_LD_MAP_GET_INFO
1363 * dcmd.mbox.b[0] - number of LDs being sync'd
1364 * dcmd.mbox.b[1] - 0 - complete command immediately.
1365 * - 1 - pend till config change
1366 * dcmd.mbox.b[2] - 0 - supports max 64 lds and uses legacy MR_FW_RAID_MAP
1367 * - 1 - supports max MAX_LOGICAL_DRIVES_EXT lds and
1368 * uses extended struct MR_FW_RAID_MAP_EXT
1369 */
1370 static int
1371 megasas_get_ld_map_info(struct megasas_instance *instance)
1372 {
1373 int ret = 0;
1374 struct megasas_cmd *cmd;
1375 struct megasas_dcmd_frame *dcmd;
1376 void *ci;
1377 dma_addr_t ci_h = 0;
1378 u32 size_map_info;
1379 struct fusion_context *fusion;
1380
1381 cmd = megasas_get_cmd(instance);
1382
1383 if (!cmd) {
1384 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for map info\n");
1385 return -ENOMEM;
1386 }
1387
1388 fusion = instance->ctrl_context;
1389
1390 if (!fusion) {
1391 megasas_return_cmd(instance, cmd);
1392 return -ENXIO;
1393 }
1394
1395 dcmd = &cmd->frame->dcmd;
1396
1397 size_map_info = fusion->current_map_sz;
1398
1399 ci = (void *) fusion->ld_map[(instance->map_id & 1)];
1400 ci_h = fusion->ld_map_phys[(instance->map_id & 1)];
1401
1402 if (!ci) {
1403 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ld_map_info\n");
1404 megasas_return_cmd(instance, cmd);
1405 return -ENOMEM;
1406 }
1407
1408 memset(ci, 0, fusion->max_map_sz);
1409 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1410 dcmd->cmd = MFI_CMD_DCMD;
1411 dcmd->cmd_status = 0xFF;
1412 dcmd->sge_count = 1;
1413 dcmd->flags = MFI_FRAME_DIR_READ;
1414 dcmd->timeout = 0;
1415 dcmd->pad_0 = 0;
1416 dcmd->data_xfer_len = cpu_to_le32(size_map_info);
1417 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
1418
1419 megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info);
1420
1421 if (!instance->mask_interrupts)
1422 ret = megasas_issue_blocked_cmd(instance, cmd,
1423 MFI_IO_TIMEOUT_SECS);
1424 else
1425 ret = megasas_issue_polled(instance, cmd);
1426
1427 if (ret == DCMD_TIMEOUT)
1428 dev_warn(&instance->pdev->dev,
1429 "%s DCMD timed out, RAID map is disabled\n",
1430 __func__);
1431
1432 megasas_return_cmd(instance, cmd);
1433
1434 return ret;
1435 }
1436
1437 u8
1438 megasas_get_map_info(struct megasas_instance *instance)
1439 {
1440 struct fusion_context *fusion = instance->ctrl_context;
1441
1442 fusion->fast_path_io = 0;
1443 if (!megasas_get_ld_map_info(instance)) {
1444 if (MR_ValidateMapInfo(instance, instance->map_id)) {
1445 fusion->fast_path_io = 1;
1446 return 0;
1447 }
1448 }
1449 return 1;
1450 }
1451
1452 /*
1453 * megasas_sync_map_info - Returns FW's ld_map structure
1454 * @instance: Adapter soft state
1455 *
1456 * Issues an internal command (DCMD) to get the FW's controller PD
1457 * list structure. This information is mainly used to find out SYSTEM
1458 * supported by the FW.
1459 */
1460 int
1461 megasas_sync_map_info(struct megasas_instance *instance)
1462 {
1463 int i;
1464 struct megasas_cmd *cmd;
1465 struct megasas_dcmd_frame *dcmd;
1466 u16 num_lds;
1467 struct fusion_context *fusion;
1468 struct MR_LD_TARGET_SYNC *ci = NULL;
1469 struct MR_DRV_RAID_MAP_ALL *map;
1470 struct MR_LD_RAID *raid;
1471 struct MR_LD_TARGET_SYNC *ld_sync;
1472 dma_addr_t ci_h = 0;
1473 u32 size_map_info;
1474
1475 cmd = megasas_get_cmd(instance);
1476
1477 if (!cmd) {
1478 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for sync info\n");
1479 return -ENOMEM;
1480 }
1481
1482 fusion = instance->ctrl_context;
1483
1484 if (!fusion) {
1485 megasas_return_cmd(instance, cmd);
1486 return 1;
1487 }
1488
1489 map = fusion->ld_drv_map[instance->map_id & 1];
1490
1491 num_lds = le16_to_cpu(map->raidMap.ldCount);
1492
1493 dcmd = &cmd->frame->dcmd;
1494
1495 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1496
1497 ci = (struct MR_LD_TARGET_SYNC *)
1498 fusion->ld_map[(instance->map_id - 1) & 1];
1499 memset(ci, 0, fusion->max_map_sz);
1500
1501 ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1];
1502
1503 ld_sync = (struct MR_LD_TARGET_SYNC *)ci;
1504
1505 for (i = 0; i < num_lds; i++, ld_sync++) {
1506 raid = MR_LdRaidGet(i, map);
1507 ld_sync->targetId = MR_GetLDTgtId(i, map);
1508 ld_sync->seqNum = raid->seqNum;
1509 }
1510
1511 size_map_info = fusion->current_map_sz;
1512
1513 dcmd->cmd = MFI_CMD_DCMD;
1514 dcmd->cmd_status = 0xFF;
1515 dcmd->sge_count = 1;
1516 dcmd->flags = MFI_FRAME_DIR_WRITE;
1517 dcmd->timeout = 0;
1518 dcmd->pad_0 = 0;
1519 dcmd->data_xfer_len = cpu_to_le32(size_map_info);
1520 dcmd->mbox.b[0] = num_lds;
1521 dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG;
1522 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
1523
1524 megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info);
1525
1526 instance->map_update_cmd = cmd;
1527
1528 instance->instancet->issue_dcmd(instance, cmd);
1529
1530 return 0;
1531 }
1532
1533 /*
1534 * meagasas_display_intel_branding - Display branding string
1535 * @instance: per adapter object
1536 *
1537 * Return nothing.
1538 */
1539 static void
1540 megasas_display_intel_branding(struct megasas_instance *instance)
1541 {
1542 if (instance->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL)
1543 return;
1544
1545 switch (instance->pdev->device) {
1546 case PCI_DEVICE_ID_LSI_INVADER:
1547 switch (instance->pdev->subsystem_device) {
1548 case MEGARAID_INTEL_RS3DC080_SSDID:
1549 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1550 instance->host->host_no,
1551 MEGARAID_INTEL_RS3DC080_BRANDING);
1552 break;
1553 case MEGARAID_INTEL_RS3DC040_SSDID:
1554 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1555 instance->host->host_no,
1556 MEGARAID_INTEL_RS3DC040_BRANDING);
1557 break;
1558 case MEGARAID_INTEL_RS3SC008_SSDID:
1559 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1560 instance->host->host_no,
1561 MEGARAID_INTEL_RS3SC008_BRANDING);
1562 break;
1563 case MEGARAID_INTEL_RS3MC044_SSDID:
1564 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1565 instance->host->host_no,
1566 MEGARAID_INTEL_RS3MC044_BRANDING);
1567 break;
1568 default:
1569 break;
1570 }
1571 break;
1572 case PCI_DEVICE_ID_LSI_FURY:
1573 switch (instance->pdev->subsystem_device) {
1574 case MEGARAID_INTEL_RS3WC080_SSDID:
1575 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1576 instance->host->host_no,
1577 MEGARAID_INTEL_RS3WC080_BRANDING);
1578 break;
1579 case MEGARAID_INTEL_RS3WC040_SSDID:
1580 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1581 instance->host->host_no,
1582 MEGARAID_INTEL_RS3WC040_BRANDING);
1583 break;
1584 default:
1585 break;
1586 }
1587 break;
1588 case PCI_DEVICE_ID_LSI_CUTLASS_52:
1589 case PCI_DEVICE_ID_LSI_CUTLASS_53:
1590 switch (instance->pdev->subsystem_device) {
1591 case MEGARAID_INTEL_RMS3BC160_SSDID:
1592 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1593 instance->host->host_no,
1594 MEGARAID_INTEL_RMS3BC160_BRANDING);
1595 break;
1596 default:
1597 break;
1598 }
1599 break;
1600 default:
1601 break;
1602 }
1603 }
1604
1605 /**
1606 * megasas_allocate_raid_maps - Allocate memory for RAID maps
1607 * @instance: Adapter soft state
1608 *
1609 * return: if success: return 0
1610 * failed: return -ENOMEM
1611 */
1612 static inline int megasas_allocate_raid_maps(struct megasas_instance *instance)
1613 {
1614 struct fusion_context *fusion;
1615 int i = 0;
1616
1617 fusion = instance->ctrl_context;
1618
1619 fusion->drv_map_pages = get_order(fusion->drv_map_sz);
1620
1621 for (i = 0; i < 2; i++) {
1622 fusion->ld_map[i] = NULL;
1623
1624 fusion->ld_drv_map[i] = (void *)
1625 __get_free_pages(__GFP_ZERO | GFP_KERNEL,
1626 fusion->drv_map_pages);
1627
1628 if (!fusion->ld_drv_map[i]) {
1629 fusion->ld_drv_map[i] = vzalloc(fusion->drv_map_sz);
1630
1631 if (!fusion->ld_drv_map[i]) {
1632 dev_err(&instance->pdev->dev,
1633 "Could not allocate memory for local map"
1634 " size requested: %d\n",
1635 fusion->drv_map_sz);
1636 goto ld_drv_map_alloc_fail;
1637 }
1638 }
1639 }
1640
1641 for (i = 0; i < 2; i++) {
1642 fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev,
1643 fusion->max_map_sz,
1644 &fusion->ld_map_phys[i],
1645 GFP_KERNEL);
1646 if (!fusion->ld_map[i]) {
1647 dev_err(&instance->pdev->dev,
1648 "Could not allocate memory for map info %s:%d\n",
1649 __func__, __LINE__);
1650 goto ld_map_alloc_fail;
1651 }
1652 }
1653
1654 return 0;
1655
1656 ld_map_alloc_fail:
1657 for (i = 0; i < 2; i++) {
1658 if (fusion->ld_map[i])
1659 dma_free_coherent(&instance->pdev->dev,
1660 fusion->max_map_sz,
1661 fusion->ld_map[i],
1662 fusion->ld_map_phys[i]);
1663 }
1664
1665 ld_drv_map_alloc_fail:
1666 for (i = 0; i < 2; i++) {
1667 if (fusion->ld_drv_map[i]) {
1668 if (is_vmalloc_addr(fusion->ld_drv_map[i]))
1669 vfree(fusion->ld_drv_map[i]);
1670 else
1671 free_pages((ulong)fusion->ld_drv_map[i],
1672 fusion->drv_map_pages);
1673 }
1674 }
1675
1676 return -ENOMEM;
1677 }
1678
1679 /**
1680 * megasas_configure_queue_sizes - Calculate size of request desc queue,
1681 * reply desc queue,
1682 * IO request frame queue, set can_queue.
1683 * @instance: Adapter soft state
1684 * @return: void
1685 */
1686 static inline
1687 void megasas_configure_queue_sizes(struct megasas_instance *instance)
1688 {
1689 struct fusion_context *fusion;
1690 u16 max_cmd;
1691
1692 fusion = instance->ctrl_context;
1693 max_cmd = instance->max_fw_cmds;
1694
1695 if (instance->adapter_type >= VENTURA_SERIES)
1696 instance->max_mpt_cmds = instance->max_fw_cmds * RAID_1_PEER_CMDS;
1697 else
1698 instance->max_mpt_cmds = instance->max_fw_cmds;
1699
1700 instance->max_scsi_cmds = instance->max_fw_cmds - instance->max_mfi_cmds;
1701 instance->cur_can_queue = instance->max_scsi_cmds;
1702 instance->host->can_queue = instance->cur_can_queue;
1703
1704 fusion->reply_q_depth = 2 * ((max_cmd + 1 + 15) / 16) * 16;
1705
1706 fusion->request_alloc_sz = sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *
1707 instance->max_mpt_cmds;
1708 fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION) *
1709 (fusion->reply_q_depth);
1710 fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE +
1711 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE
1712 * (instance->max_mpt_cmds + 1)); /* Extra 1 for SMID 0 */
1713 }
1714
1715 static int megasas_alloc_ioc_init_frame(struct megasas_instance *instance)
1716 {
1717 struct fusion_context *fusion;
1718 struct megasas_cmd *cmd;
1719
1720 fusion = instance->ctrl_context;
1721
1722 cmd = kzalloc(sizeof(struct megasas_cmd), GFP_KERNEL);
1723
1724 if (!cmd) {
1725 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n",
1726 __func__, __LINE__);
1727 return -ENOMEM;
1728 }
1729
1730 cmd->frame = dma_alloc_coherent(&instance->pdev->dev,
1731 IOC_INIT_FRAME_SIZE,
1732 &cmd->frame_phys_addr, GFP_KERNEL);
1733
1734 if (!cmd->frame) {
1735 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n",
1736 __func__, __LINE__);
1737 kfree(cmd);
1738 return -ENOMEM;
1739 }
1740
1741 fusion->ioc_init_cmd = cmd;
1742 return 0;
1743 }
1744
1745 /**
1746 * megasas_free_ioc_init_cmd - Free IOC INIT command frame
1747 * @instance: Adapter soft state
1748 */
1749 static inline void megasas_free_ioc_init_cmd(struct megasas_instance *instance)
1750 {
1751 struct fusion_context *fusion;
1752
1753 fusion = instance->ctrl_context;
1754
1755 if (fusion->ioc_init_cmd && fusion->ioc_init_cmd->frame)
1756 dma_free_coherent(&instance->pdev->dev,
1757 IOC_INIT_FRAME_SIZE,
1758 fusion->ioc_init_cmd->frame,
1759 fusion->ioc_init_cmd->frame_phys_addr);
1760
1761 kfree(fusion->ioc_init_cmd);
1762 }
1763
1764 /**
1765 * megasas_init_adapter_fusion - Initializes the FW
1766 * @instance: Adapter soft state
1767 *
1768 * This is the main function for initializing firmware.
1769 */
1770 static u32
1771 megasas_init_adapter_fusion(struct megasas_instance *instance)
1772 {
1773 struct fusion_context *fusion;
1774 u32 scratch_pad_1;
1775 int i = 0, count;
1776 u32 status_reg;
1777
1778 fusion = instance->ctrl_context;
1779
1780 megasas_fusion_update_can_queue(instance, PROBE_CONTEXT);
1781
1782 /*
1783 * Only Driver's internal DCMDs and IOCTL DCMDs needs to have MFI frames
1784 */
1785 instance->max_mfi_cmds =
1786 MEGASAS_FUSION_INTERNAL_CMDS + MEGASAS_FUSION_IOCTL_CMDS;
1787
1788 megasas_configure_queue_sizes(instance);
1789
1790 scratch_pad_1 = megasas_readl(instance,
1791 &instance->reg_set->outbound_scratch_pad_1);
1792 /* If scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK is set,
1793 * Firmware support extended IO chain frame which is 4 times more than
1794 * legacy Firmware.
1795 * Legacy Firmware - Frame size is (8 * 128) = 1K
1796 * 1M IO Firmware - Frame size is (8 * 128 * 4) = 4K
1797 */
1798 if (scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK)
1799 instance->max_chain_frame_sz =
1800 ((scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_MASK) >>
1801 MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_1MB_IO;
1802 else
1803 instance->max_chain_frame_sz =
1804 ((scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_MASK) >>
1805 MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_256K_IO;
1806
1807 if (instance->max_chain_frame_sz < MEGASAS_CHAIN_FRAME_SZ_MIN) {
1808 dev_warn(&instance->pdev->dev, "frame size %d invalid, fall back to legacy max frame size %d\n",
1809 instance->max_chain_frame_sz,
1810 MEGASAS_CHAIN_FRAME_SZ_MIN);
1811 instance->max_chain_frame_sz = MEGASAS_CHAIN_FRAME_SZ_MIN;
1812 }
1813
1814 fusion->max_sge_in_main_msg =
1815 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE
1816 - offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16;
1817
1818 fusion->max_sge_in_chain =
1819 instance->max_chain_frame_sz
1820 / sizeof(union MPI2_SGE_IO_UNION);
1821
1822 instance->max_num_sge =
1823 rounddown_pow_of_two(fusion->max_sge_in_main_msg
1824 + fusion->max_sge_in_chain - 2);
1825
1826 /* Used for pass thru MFI frame (DCMD) */
1827 fusion->chain_offset_mfi_pthru =
1828 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16;
1829
1830 fusion->chain_offset_io_request =
1831 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
1832 sizeof(union MPI2_SGE_IO_UNION))/16;
1833
1834 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
1835 for (i = 0 ; i < count; i++)
1836 fusion->last_reply_idx[i] = 0;
1837
1838 /*
1839 * For fusion adapters, 3 commands for IOCTL and 8 commands
1840 * for driver's internal DCMDs.
1841 */
1842 instance->max_scsi_cmds = instance->max_fw_cmds -
1843 (MEGASAS_FUSION_INTERNAL_CMDS +
1844 MEGASAS_FUSION_IOCTL_CMDS);
1845 sema_init(&instance->ioctl_sem, MEGASAS_FUSION_IOCTL_CMDS);
1846
1847 if (megasas_alloc_ioc_init_frame(instance))
1848 return 1;
1849
1850 /*
1851 * Allocate memory for descriptors
1852 * Create a pool of commands
1853 */
1854 if (megasas_alloc_cmds(instance))
1855 goto fail_alloc_mfi_cmds;
1856 if (megasas_alloc_cmds_fusion(instance))
1857 goto fail_alloc_cmds;
1858
1859 if (megasas_ioc_init_fusion(instance)) {
1860 status_reg = instance->instancet->read_fw_status_reg(instance);
1861 if (((status_reg & MFI_STATE_MASK) == MFI_STATE_FAULT) &&
1862 (status_reg & MFI_RESET_ADAPTER)) {
1863 /* Do a chip reset and then retry IOC INIT once */
1864 if (megasas_adp_reset_wait_for_ready
1865 (instance, true, 0) == FAILED)
1866 goto fail_ioc_init;
1867
1868 if (megasas_ioc_init_fusion(instance))
1869 goto fail_ioc_init;
1870 } else {
1871 goto fail_ioc_init;
1872 }
1873 }
1874
1875 megasas_display_intel_branding(instance);
1876 if (megasas_get_ctrl_info(instance)) {
1877 dev_err(&instance->pdev->dev,
1878 "Could not get controller info. Fail from %s %d\n",
1879 __func__, __LINE__);
1880 goto fail_ioc_init;
1881 }
1882
1883 instance->flag_ieee = 1;
1884 instance->r1_ldio_hint_default = MR_R1_LDIO_PIGGYBACK_DEFAULT;
1885 instance->threshold_reply_count = instance->max_fw_cmds / 4;
1886 fusion->fast_path_io = 0;
1887
1888 if (megasas_allocate_raid_maps(instance))
1889 goto fail_ioc_init;
1890
1891 if (!megasas_get_map_info(instance))
1892 megasas_sync_map_info(instance);
1893
1894 return 0;
1895
1896 fail_ioc_init:
1897 megasas_free_cmds_fusion(instance);
1898 fail_alloc_cmds:
1899 megasas_free_cmds(instance);
1900 fail_alloc_mfi_cmds:
1901 megasas_free_ioc_init_cmd(instance);
1902 return 1;
1903 }
1904
1905 /**
1906 * megasas_fault_detect_work - Worker function of
1907 * FW fault handling workqueue.
1908 */
1909 static void
1910 megasas_fault_detect_work(struct work_struct *work)
1911 {
1912 struct megasas_instance *instance =
1913 container_of(work, struct megasas_instance,
1914 fw_fault_work.work);
1915 u32 fw_state, dma_state, status;
1916
1917 /* Check the fw state */
1918 fw_state = instance->instancet->read_fw_status_reg(instance) &
1919 MFI_STATE_MASK;
1920
1921 if (fw_state == MFI_STATE_FAULT) {
1922 dma_state = instance->instancet->read_fw_status_reg(instance) &
1923 MFI_STATE_DMADONE;
1924 /* Start collecting crash, if DMA bit is done */
1925 if (instance->crash_dump_drv_support &&
1926 instance->crash_dump_app_support && dma_state) {
1927 megasas_fusion_crash_dump(instance);
1928 } else {
1929 if (instance->unload == 0) {
1930 status = megasas_reset_fusion(instance->host, 0);
1931 if (status != SUCCESS) {
1932 dev_err(&instance->pdev->dev,
1933 "Failed from %s %d, do not re-arm timer\n",
1934 __func__, __LINE__);
1935 return;
1936 }
1937 }
1938 }
1939 }
1940
1941 if (instance->fw_fault_work_q)
1942 queue_delayed_work(instance->fw_fault_work_q,
1943 &instance->fw_fault_work,
1944 msecs_to_jiffies(MEGASAS_WATCHDOG_THREAD_INTERVAL));
1945 }
1946
1947 int
1948 megasas_fusion_start_watchdog(struct megasas_instance *instance)
1949 {
1950 /* Check if the Fault WQ is already started */
1951 if (instance->fw_fault_work_q)
1952 return SUCCESS;
1953
1954 INIT_DELAYED_WORK(&instance->fw_fault_work, megasas_fault_detect_work);
1955
1956 snprintf(instance->fault_handler_work_q_name,
1957 sizeof(instance->fault_handler_work_q_name),
1958 "poll_megasas%d_status", instance->host->host_no);
1959
1960 instance->fw_fault_work_q =
1961 create_singlethread_workqueue(instance->fault_handler_work_q_name);
1962 if (!instance->fw_fault_work_q) {
1963 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1964 __func__, __LINE__);
1965 return FAILED;
1966 }
1967
1968 queue_delayed_work(instance->fw_fault_work_q,
1969 &instance->fw_fault_work,
1970 msecs_to_jiffies(MEGASAS_WATCHDOG_THREAD_INTERVAL));
1971
1972 return SUCCESS;
1973 }
1974
1975 void
1976 megasas_fusion_stop_watchdog(struct megasas_instance *instance)
1977 {
1978 struct workqueue_struct *wq;
1979
1980 if (instance->fw_fault_work_q) {
1981 wq = instance->fw_fault_work_q;
1982 instance->fw_fault_work_q = NULL;
1983 if (!cancel_delayed_work_sync(&instance->fw_fault_work))
1984 flush_workqueue(wq);
1985 destroy_workqueue(wq);
1986 }
1987 }
1988
1989 /**
1990 * map_cmd_status - Maps FW cmd status to OS cmd status
1991 * @cmd : Pointer to cmd
1992 * @status : status of cmd returned by FW
1993 * @ext_status : ext status of cmd returned by FW
1994 */
1995
1996 static void
1997 map_cmd_status(struct fusion_context *fusion,
1998 struct scsi_cmnd *scmd, u8 status, u8 ext_status,
1999 u32 data_length, u8 *sense)
2000 {
2001 u8 cmd_type;
2002 int resid;
2003
2004 cmd_type = megasas_cmd_type(scmd);
2005 switch (status) {
2006
2007 case MFI_STAT_OK:
2008 scmd->result = DID_OK << 16;
2009 break;
2010
2011 case MFI_STAT_SCSI_IO_FAILED:
2012 case MFI_STAT_LD_INIT_IN_PROGRESS:
2013 scmd->result = (DID_ERROR << 16) | ext_status;
2014 break;
2015
2016 case MFI_STAT_SCSI_DONE_WITH_ERROR:
2017
2018 scmd->result = (DID_OK << 16) | ext_status;
2019 if (ext_status == SAM_STAT_CHECK_CONDITION) {
2020 memset(scmd->sense_buffer, 0,
2021 SCSI_SENSE_BUFFERSIZE);
2022 memcpy(scmd->sense_buffer, sense,
2023 SCSI_SENSE_BUFFERSIZE);
2024 scmd->result |= DRIVER_SENSE << 24;
2025 }
2026
2027 /*
2028 * If the IO request is partially completed, then MR FW will
2029 * update "io_request->DataLength" field with actual number of
2030 * bytes transferred.Driver will set residual bytes count in
2031 * SCSI command structure.
2032 */
2033 resid = (scsi_bufflen(scmd) - data_length);
2034 scsi_set_resid(scmd, resid);
2035
2036 if (resid &&
2037 ((cmd_type == READ_WRITE_LDIO) ||
2038 (cmd_type == READ_WRITE_SYSPDIO)))
2039 scmd_printk(KERN_INFO, scmd, "BRCM Debug mfi stat 0x%x, data len"
2040 " requested/completed 0x%x/0x%x\n",
2041 status, scsi_bufflen(scmd), data_length);
2042 break;
2043
2044 case MFI_STAT_LD_OFFLINE:
2045 case MFI_STAT_DEVICE_NOT_FOUND:
2046 scmd->result = DID_BAD_TARGET << 16;
2047 break;
2048 case MFI_STAT_CONFIG_SEQ_MISMATCH:
2049 scmd->result = DID_IMM_RETRY << 16;
2050 break;
2051 default:
2052 scmd->result = DID_ERROR << 16;
2053 break;
2054 }
2055 }
2056
2057 /**
2058 * megasas_is_prp_possible -
2059 * Checks if native NVMe PRPs can be built for the IO
2060 *
2061 * @instance: Adapter soft state
2062 * @scmd: SCSI command from the mid-layer
2063 * @sge_count: scatter gather element count.
2064 *
2065 * Returns: true: PRPs can be built
2066 * false: IEEE SGLs needs to be built
2067 */
2068 static bool
2069 megasas_is_prp_possible(struct megasas_instance *instance,
2070 struct scsi_cmnd *scmd, int sge_count)
2071 {
2072 int i;
2073 u32 data_length = 0;
2074 struct scatterlist *sg_scmd;
2075 bool build_prp = false;
2076 u32 mr_nvme_pg_size;
2077
2078 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
2079 MR_DEFAULT_NVME_PAGE_SIZE);
2080 data_length = scsi_bufflen(scmd);
2081 sg_scmd = scsi_sglist(scmd);
2082
2083 /*
2084 * NVMe uses one PRP for each page (or part of a page)
2085 * look at the data length - if 4 pages or less then IEEE is OK
2086 * if > 5 pages then we need to build a native SGL
2087 * if > 4 and <= 5 pages, then check physical address of 1st SG entry
2088 * if this first size in the page is >= the residual beyond 4 pages
2089 * then use IEEE, otherwise use native SGL
2090 */
2091
2092 if (data_length > (mr_nvme_pg_size * 5)) {
2093 build_prp = true;
2094 } else if ((data_length > (mr_nvme_pg_size * 4)) &&
2095 (data_length <= (mr_nvme_pg_size * 5))) {
2096 /* check if 1st SG entry size is < residual beyond 4 pages */
2097 if (sg_dma_len(sg_scmd) < (data_length - (mr_nvme_pg_size * 4)))
2098 build_prp = true;
2099 }
2100
2101 /*
2102 * Below code detects gaps/holes in IO data buffers.
2103 * What does holes/gaps mean?
2104 * Any SGE except first one in a SGL starts at non NVME page size
2105 * aligned address OR Any SGE except last one in a SGL ends at
2106 * non NVME page size boundary.
2107 *
2108 * Driver has already informed block layer by setting boundary rules for
2109 * bio merging done at NVME page size boundary calling kernel API
2110 * blk_queue_virt_boundary inside slave_config.
2111 * Still there is possibility of IO coming with holes to driver because of
2112 * IO merging done by IO scheduler.
2113 *
2114 * With SCSI BLK MQ enabled, there will be no IO with holes as there is no
2115 * IO scheduling so no IO merging.
2116 *
2117 * With SCSI BLK MQ disabled, IO scheduler may attempt to merge IOs and
2118 * then sending IOs with holes.
2119 *
2120 * Though driver can request block layer to disable IO merging by calling-
2121 * blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue) but
2122 * user may tune sysfs parameter- nomerges again to 0 or 1.
2123 *
2124 * If in future IO scheduling is enabled with SCSI BLK MQ,
2125 * this algorithm to detect holes will be required in driver
2126 * for SCSI BLK MQ enabled case as well.
2127 *
2128 *
2129 */
2130 scsi_for_each_sg(scmd, sg_scmd, sge_count, i) {
2131 if ((i != 0) && (i != (sge_count - 1))) {
2132 if (mega_mod64(sg_dma_len(sg_scmd), mr_nvme_pg_size) ||
2133 mega_mod64(sg_dma_address(sg_scmd),
2134 mr_nvme_pg_size)) {
2135 build_prp = false;
2136 break;
2137 }
2138 }
2139
2140 if ((sge_count > 1) && (i == 0)) {
2141 if ((mega_mod64((sg_dma_address(sg_scmd) +
2142 sg_dma_len(sg_scmd)),
2143 mr_nvme_pg_size))) {
2144 build_prp = false;
2145 break;
2146 }
2147 }
2148
2149 if ((sge_count > 1) && (i == (sge_count - 1))) {
2150 if (mega_mod64(sg_dma_address(sg_scmd),
2151 mr_nvme_pg_size)) {
2152 build_prp = false;
2153 break;
2154 }
2155 }
2156 }
2157
2158 return build_prp;
2159 }
2160
2161 /**
2162 * megasas_make_prp_nvme -
2163 * Prepare PRPs(Physical Region Page)- SGLs specific to NVMe drives only
2164 *
2165 * @instance: Adapter soft state
2166 * @scmd: SCSI command from the mid-layer
2167 * @sgl_ptr: SGL to be filled in
2168 * @cmd: Fusion command frame
2169 * @sge_count: scatter gather element count.
2170 *
2171 * Returns: true: PRPs are built
2172 * false: IEEE SGLs needs to be built
2173 */
2174 static bool
2175 megasas_make_prp_nvme(struct megasas_instance *instance, struct scsi_cmnd *scmd,
2176 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
2177 struct megasas_cmd_fusion *cmd, int sge_count)
2178 {
2179 int sge_len, offset, num_prp_in_chain = 0;
2180 struct MPI25_IEEE_SGE_CHAIN64 *main_chain_element, *ptr_first_sgl;
2181 u64 *ptr_sgl;
2182 dma_addr_t ptr_sgl_phys;
2183 u64 sge_addr;
2184 u32 page_mask, page_mask_result;
2185 struct scatterlist *sg_scmd;
2186 u32 first_prp_len;
2187 bool build_prp = false;
2188 int data_len = scsi_bufflen(scmd);
2189 u32 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
2190 MR_DEFAULT_NVME_PAGE_SIZE);
2191
2192 build_prp = megasas_is_prp_possible(instance, scmd, sge_count);
2193
2194 if (!build_prp)
2195 return false;
2196
2197 /*
2198 * Nvme has a very convoluted prp format. One prp is required
2199 * for each page or partial page. Driver need to split up OS sg_list
2200 * entries if it is longer than one page or cross a page
2201 * boundary. Driver also have to insert a PRP list pointer entry as
2202 * the last entry in each physical page of the PRP list.
2203 *
2204 * NOTE: The first PRP "entry" is actually placed in the first
2205 * SGL entry in the main message as IEEE 64 format. The 2nd
2206 * entry in the main message is the chain element, and the rest
2207 * of the PRP entries are built in the contiguous pcie buffer.
2208 */
2209 page_mask = mr_nvme_pg_size - 1;
2210 ptr_sgl = (u64 *)cmd->sg_frame;
2211 ptr_sgl_phys = cmd->sg_frame_phys_addr;
2212 memset(ptr_sgl, 0, instance->max_chain_frame_sz);
2213
2214 /* Build chain frame element which holds all prps except first*/
2215 main_chain_element = (struct MPI25_IEEE_SGE_CHAIN64 *)
2216 ((u8 *)sgl_ptr + sizeof(struct MPI25_IEEE_SGE_CHAIN64));
2217
2218 main_chain_element->Address = cpu_to_le64(ptr_sgl_phys);
2219 main_chain_element->NextChainOffset = 0;
2220 main_chain_element->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
2221 IEEE_SGE_FLAGS_SYSTEM_ADDR |
2222 MPI26_IEEE_SGE_FLAGS_NSF_NVME_PRP;
2223
2224 /* Build first prp, sge need not to be page aligned*/
2225 ptr_first_sgl = sgl_ptr;
2226 sg_scmd = scsi_sglist(scmd);
2227 sge_addr = sg_dma_address(sg_scmd);
2228 sge_len = sg_dma_len(sg_scmd);
2229
2230 offset = (u32)(sge_addr & page_mask);
2231 first_prp_len = mr_nvme_pg_size - offset;
2232
2233 ptr_first_sgl->Address = cpu_to_le64(sge_addr);
2234 ptr_first_sgl->Length = cpu_to_le32(first_prp_len);
2235
2236 data_len -= first_prp_len;
2237
2238 if (sge_len > first_prp_len) {
2239 sge_addr += first_prp_len;
2240 sge_len -= first_prp_len;
2241 } else if (sge_len == first_prp_len) {
2242 sg_scmd = sg_next(sg_scmd);
2243 sge_addr = sg_dma_address(sg_scmd);
2244 sge_len = sg_dma_len(sg_scmd);
2245 }
2246
2247 for (;;) {
2248 offset = (u32)(sge_addr & page_mask);
2249
2250 /* Put PRP pointer due to page boundary*/
2251 page_mask_result = (uintptr_t)(ptr_sgl + 1) & page_mask;
2252 if (unlikely(!page_mask_result)) {
2253 scmd_printk(KERN_NOTICE,
2254 scmd, "page boundary ptr_sgl: 0x%p\n",
2255 ptr_sgl);
2256 ptr_sgl_phys += 8;
2257 *ptr_sgl = cpu_to_le64(ptr_sgl_phys);
2258 ptr_sgl++;
2259 num_prp_in_chain++;
2260 }
2261
2262 *ptr_sgl = cpu_to_le64(sge_addr);
2263 ptr_sgl++;
2264 ptr_sgl_phys += 8;
2265 num_prp_in_chain++;
2266
2267 sge_addr += mr_nvme_pg_size;
2268 sge_len -= mr_nvme_pg_size;
2269 data_len -= mr_nvme_pg_size;
2270
2271 if (data_len <= 0)
2272 break;
2273
2274 if (sge_len > 0)
2275 continue;
2276
2277 sg_scmd = sg_next(sg_scmd);
2278 sge_addr = sg_dma_address(sg_scmd);
2279 sge_len = sg_dma_len(sg_scmd);
2280 }
2281
2282 main_chain_element->Length =
2283 cpu_to_le32(num_prp_in_chain * sizeof(u64));
2284
2285 return build_prp;
2286 }
2287
2288 /**
2289 * megasas_make_sgl_fusion - Prepares 32-bit SGL
2290 * @instance: Adapter soft state
2291 * @scp: SCSI command from the mid-layer
2292 * @sgl_ptr: SGL to be filled in
2293 * @cmd: cmd we are working on
2294 * @sge_count sge count
2295 *
2296 */
2297 static void
2298 megasas_make_sgl_fusion(struct megasas_instance *instance,
2299 struct scsi_cmnd *scp,
2300 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
2301 struct megasas_cmd_fusion *cmd, int sge_count)
2302 {
2303 int i, sg_processed;
2304 struct scatterlist *os_sgl;
2305 struct fusion_context *fusion;
2306
2307 fusion = instance->ctrl_context;
2308
2309 if (instance->adapter_type >= INVADER_SERIES) {
2310 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr;
2311 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
2312 sgl_ptr_end->Flags = 0;
2313 }
2314
2315 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
2316 sgl_ptr->Length = cpu_to_le32(sg_dma_len(os_sgl));
2317 sgl_ptr->Address = cpu_to_le64(sg_dma_address(os_sgl));
2318 sgl_ptr->Flags = 0;
2319 if (instance->adapter_type >= INVADER_SERIES)
2320 if (i == sge_count - 1)
2321 sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST;
2322 sgl_ptr++;
2323 sg_processed = i + 1;
2324
2325 if ((sg_processed == (fusion->max_sge_in_main_msg - 1)) &&
2326 (sge_count > fusion->max_sge_in_main_msg)) {
2327
2328 struct MPI25_IEEE_SGE_CHAIN64 *sg_chain;
2329 if (instance->adapter_type >= INVADER_SERIES) {
2330 if ((le16_to_cpu(cmd->io_request->IoFlags) &
2331 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) !=
2332 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH)
2333 cmd->io_request->ChainOffset =
2334 fusion->
2335 chain_offset_io_request;
2336 else
2337 cmd->io_request->ChainOffset = 0;
2338 } else
2339 cmd->io_request->ChainOffset =
2340 fusion->chain_offset_io_request;
2341
2342 sg_chain = sgl_ptr;
2343 /* Prepare chain element */
2344 sg_chain->NextChainOffset = 0;
2345 if (instance->adapter_type >= INVADER_SERIES)
2346 sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT;
2347 else
2348 sg_chain->Flags =
2349 (IEEE_SGE_FLAGS_CHAIN_ELEMENT |
2350 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR);
2351 sg_chain->Length = cpu_to_le32((sizeof(union MPI2_SGE_IO_UNION) * (sge_count - sg_processed)));
2352 sg_chain->Address = cpu_to_le64(cmd->sg_frame_phys_addr);
2353
2354 sgl_ptr =
2355 (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame;
2356 memset(sgl_ptr, 0, instance->max_chain_frame_sz);
2357 }
2358 }
2359 }
2360
2361 /**
2362 * megasas_make_sgl - Build Scatter Gather List(SGLs)
2363 * @scp: SCSI command pointer
2364 * @instance: Soft instance of controller
2365 * @cmd: Fusion command pointer
2366 *
2367 * This function will build sgls based on device type.
2368 * For nvme drives, there is different way of building sgls in nvme native
2369 * format- PRPs(Physical Region Page).
2370 *
2371 * Returns the number of sg lists actually used, zero if the sg lists
2372 * is NULL, or -ENOMEM if the mapping failed
2373 */
2374 static
2375 int megasas_make_sgl(struct megasas_instance *instance, struct scsi_cmnd *scp,
2376 struct megasas_cmd_fusion *cmd)
2377 {
2378 int sge_count;
2379 bool build_prp = false;
2380 struct MPI25_IEEE_SGE_CHAIN64 *sgl_chain64;
2381
2382 sge_count = scsi_dma_map(scp);
2383
2384 if ((sge_count > instance->max_num_sge) || (sge_count <= 0))
2385 return sge_count;
2386
2387 sgl_chain64 = (struct MPI25_IEEE_SGE_CHAIN64 *)&cmd->io_request->SGL;
2388 if ((le16_to_cpu(cmd->io_request->IoFlags) &
2389 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) &&
2390 (cmd->pd_interface == NVME_PD))
2391 build_prp = megasas_make_prp_nvme(instance, scp, sgl_chain64,
2392 cmd, sge_count);
2393
2394 if (!build_prp)
2395 megasas_make_sgl_fusion(instance, scp, sgl_chain64,
2396 cmd, sge_count);
2397
2398 return sge_count;
2399 }
2400
2401 /**
2402 * megasas_set_pd_lba - Sets PD LBA
2403 * @cdb: CDB
2404 * @cdb_len: cdb length
2405 * @start_blk: Start block of IO
2406 *
2407 * Used to set the PD LBA in CDB for FP IOs
2408 */
2409 static void
2410 megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len,
2411 struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp,
2412 struct MR_DRV_RAID_MAP_ALL *local_map_ptr, u32 ref_tag)
2413 {
2414 struct MR_LD_RAID *raid;
2415 u16 ld;
2416 u64 start_blk = io_info->pdBlock;
2417 u8 *cdb = io_request->CDB.CDB32;
2418 u32 num_blocks = io_info->numBlocks;
2419 u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0;
2420
2421 /* Check if T10 PI (DIF) is enabled for this LD */
2422 ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr);
2423 raid = MR_LdRaidGet(ld, local_map_ptr);
2424 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) {
2425 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2426 cdb[0] = MEGASAS_SCSI_VARIABLE_LENGTH_CMD;
2427 cdb[7] = MEGASAS_SCSI_ADDL_CDB_LEN;
2428
2429 if (scp->sc_data_direction == DMA_FROM_DEVICE)
2430 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32;
2431 else
2432 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32;
2433 cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL;
2434
2435 /* LBA */
2436 cdb[12] = (u8)((start_blk >> 56) & 0xff);
2437 cdb[13] = (u8)((start_blk >> 48) & 0xff);
2438 cdb[14] = (u8)((start_blk >> 40) & 0xff);
2439 cdb[15] = (u8)((start_blk >> 32) & 0xff);
2440 cdb[16] = (u8)((start_blk >> 24) & 0xff);
2441 cdb[17] = (u8)((start_blk >> 16) & 0xff);
2442 cdb[18] = (u8)((start_blk >> 8) & 0xff);
2443 cdb[19] = (u8)(start_blk & 0xff);
2444
2445 /* Logical block reference tag */
2446 io_request->CDB.EEDP32.PrimaryReferenceTag =
2447 cpu_to_be32(ref_tag);
2448 io_request->CDB.EEDP32.PrimaryApplicationTagMask = cpu_to_be16(0xffff);
2449 io_request->IoFlags = cpu_to_le16(32); /* Specify 32-byte cdb */
2450
2451 /* Transfer length */
2452 cdb[28] = (u8)((num_blocks >> 24) & 0xff);
2453 cdb[29] = (u8)((num_blocks >> 16) & 0xff);
2454 cdb[30] = (u8)((num_blocks >> 8) & 0xff);
2455 cdb[31] = (u8)(num_blocks & 0xff);
2456
2457 /* set SCSI IO EEDPFlags */
2458 if (scp->sc_data_direction == DMA_FROM_DEVICE) {
2459 io_request->EEDPFlags = cpu_to_le16(
2460 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
2461 MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
2462 MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP |
2463 MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG |
2464 MPI25_SCSIIO_EEDPFLAGS_DO_NOT_DISABLE_MODE |
2465 MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD);
2466 } else {
2467 io_request->EEDPFlags = cpu_to_le16(
2468 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
2469 MPI2_SCSIIO_EEDPFLAGS_INSERT_OP);
2470 }
2471 io_request->Control |= cpu_to_le32((0x4 << 26));
2472 io_request->EEDPBlockSize = cpu_to_le32(scp->device->sector_size);
2473 } else {
2474 /* Some drives don't support 16/12 byte CDB's, convert to 10 */
2475 if (((cdb_len == 12) || (cdb_len == 16)) &&
2476 (start_blk <= 0xffffffff)) {
2477 if (cdb_len == 16) {
2478 opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10;
2479 flagvals = cdb[1];
2480 groupnum = cdb[14];
2481 control = cdb[15];
2482 } else {
2483 opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10;
2484 flagvals = cdb[1];
2485 groupnum = cdb[10];
2486 control = cdb[11];
2487 }
2488
2489 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2490
2491 cdb[0] = opcode;
2492 cdb[1] = flagvals;
2493 cdb[6] = groupnum;
2494 cdb[9] = control;
2495
2496 /* Transfer length */
2497 cdb[8] = (u8)(num_blocks & 0xff);
2498 cdb[7] = (u8)((num_blocks >> 8) & 0xff);
2499
2500 io_request->IoFlags = cpu_to_le16(10); /* Specify 10-byte cdb */
2501 cdb_len = 10;
2502 } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) {
2503 /* Convert to 16 byte CDB for large LBA's */
2504 switch (cdb_len) {
2505 case 6:
2506 opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16;
2507 control = cdb[5];
2508 break;
2509 case 10:
2510 opcode =
2511 cdb[0] == READ_10 ? READ_16 : WRITE_16;
2512 flagvals = cdb[1];
2513 groupnum = cdb[6];
2514 control = cdb[9];
2515 break;
2516 case 12:
2517 opcode =
2518 cdb[0] == READ_12 ? READ_16 : WRITE_16;
2519 flagvals = cdb[1];
2520 groupnum = cdb[10];
2521 control = cdb[11];
2522 break;
2523 }
2524
2525 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2526
2527 cdb[0] = opcode;
2528 cdb[1] = flagvals;
2529 cdb[14] = groupnum;
2530 cdb[15] = control;
2531
2532 /* Transfer length */
2533 cdb[13] = (u8)(num_blocks & 0xff);
2534 cdb[12] = (u8)((num_blocks >> 8) & 0xff);
2535 cdb[11] = (u8)((num_blocks >> 16) & 0xff);
2536 cdb[10] = (u8)((num_blocks >> 24) & 0xff);
2537
2538 io_request->IoFlags = cpu_to_le16(16); /* Specify 16-byte cdb */
2539 cdb_len = 16;
2540 }
2541
2542 /* Normal case, just load LBA here */
2543 switch (cdb_len) {
2544 case 6:
2545 {
2546 u8 val = cdb[1] & 0xE0;
2547 cdb[3] = (u8)(start_blk & 0xff);
2548 cdb[2] = (u8)((start_blk >> 8) & 0xff);
2549 cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f);
2550 break;
2551 }
2552 case 10:
2553 cdb[5] = (u8)(start_blk & 0xff);
2554 cdb[4] = (u8)((start_blk >> 8) & 0xff);
2555 cdb[3] = (u8)((start_blk >> 16) & 0xff);
2556 cdb[2] = (u8)((start_blk >> 24) & 0xff);
2557 break;
2558 case 12:
2559 cdb[5] = (u8)(start_blk & 0xff);
2560 cdb[4] = (u8)((start_blk >> 8) & 0xff);
2561 cdb[3] = (u8)((start_blk >> 16) & 0xff);
2562 cdb[2] = (u8)((start_blk >> 24) & 0xff);
2563 break;
2564 case 16:
2565 cdb[9] = (u8)(start_blk & 0xff);
2566 cdb[8] = (u8)((start_blk >> 8) & 0xff);
2567 cdb[7] = (u8)((start_blk >> 16) & 0xff);
2568 cdb[6] = (u8)((start_blk >> 24) & 0xff);
2569 cdb[5] = (u8)((start_blk >> 32) & 0xff);
2570 cdb[4] = (u8)((start_blk >> 40) & 0xff);
2571 cdb[3] = (u8)((start_blk >> 48) & 0xff);
2572 cdb[2] = (u8)((start_blk >> 56) & 0xff);
2573 break;
2574 }
2575 }
2576 }
2577
2578 /**
2579 * megasas_stream_detect - stream detection on read and and write IOs
2580 * @instance: Adapter soft state
2581 * @cmd: Command to be prepared
2582 * @io_info: IO Request info
2583 *
2584 */
2585
2586 /** stream detection on read and and write IOs */
2587 static void megasas_stream_detect(struct megasas_instance *instance,
2588 struct megasas_cmd_fusion *cmd,
2589 struct IO_REQUEST_INFO *io_info)
2590 {
2591 struct fusion_context *fusion = instance->ctrl_context;
2592 u32 device_id = io_info->ldTgtId;
2593 struct LD_STREAM_DETECT *current_ld_sd
2594 = fusion->stream_detect_by_ld[device_id];
2595 u32 *track_stream = &current_ld_sd->mru_bit_map, stream_num;
2596 u32 shifted_values, unshifted_values;
2597 u32 index_value_mask, shifted_values_mask;
2598 int i;
2599 bool is_read_ahead = false;
2600 struct STREAM_DETECT *current_sd;
2601 /* find possible stream */
2602 for (i = 0; i < MAX_STREAMS_TRACKED; ++i) {
2603 stream_num = (*track_stream >>
2604 (i * BITS_PER_INDEX_STREAM)) &
2605 STREAM_MASK;
2606 current_sd = &current_ld_sd->stream_track[stream_num];
2607 /* if we found a stream, update the raid
2608 * context and also update the mruBitMap
2609 */
2610 /* boundary condition */
2611 if ((current_sd->next_seq_lba) &&
2612 (io_info->ldStartBlock >= current_sd->next_seq_lba) &&
2613 (io_info->ldStartBlock <= (current_sd->next_seq_lba + 32)) &&
2614 (current_sd->is_read == io_info->isRead)) {
2615
2616 if ((io_info->ldStartBlock != current_sd->next_seq_lba) &&
2617 ((!io_info->isRead) || (!is_read_ahead)))
2618 /*
2619 * Once the API availible we need to change this.
2620 * At this point we are not allowing any gap
2621 */
2622 continue;
2623
2624 SET_STREAM_DETECTED(cmd->io_request->RaidContext.raid_context_g35);
2625 current_sd->next_seq_lba =
2626 io_info->ldStartBlock + io_info->numBlocks;
2627 /*
2628 * update the mruBitMap LRU
2629 */
2630 shifted_values_mask =
2631 (1 << i * BITS_PER_INDEX_STREAM) - 1;
2632 shifted_values = ((*track_stream & shifted_values_mask)
2633 << BITS_PER_INDEX_STREAM);
2634 index_value_mask =
2635 STREAM_MASK << i * BITS_PER_INDEX_STREAM;
2636 unshifted_values =
2637 *track_stream & ~(shifted_values_mask |
2638 index_value_mask);
2639 *track_stream =
2640 unshifted_values | shifted_values | stream_num;
2641 return;
2642 }
2643 }
2644 /*
2645 * if we did not find any stream, create a new one
2646 * from the least recently used
2647 */
2648 stream_num = (*track_stream >>
2649 ((MAX_STREAMS_TRACKED - 1) * BITS_PER_INDEX_STREAM)) &
2650 STREAM_MASK;
2651 current_sd = &current_ld_sd->stream_track[stream_num];
2652 current_sd->is_read = io_info->isRead;
2653 current_sd->next_seq_lba = io_info->ldStartBlock + io_info->numBlocks;
2654 *track_stream = (((*track_stream & ZERO_LAST_STREAM) << 4) | stream_num);
2655 return;
2656 }
2657
2658 /**
2659 * megasas_set_raidflag_cpu_affinity - This function sets the cpu
2660 * affinity (cpu of the controller) and raid_flags in the raid context
2661 * based on IO type.
2662 *
2663 * @praid_context: IO RAID context
2664 * @raid: LD raid map
2665 * @fp_possible: Is fast path possible?
2666 * @is_read: Is read IO?
2667 *
2668 */
2669 static void
2670 megasas_set_raidflag_cpu_affinity(struct fusion_context *fusion,
2671 union RAID_CONTEXT_UNION *praid_context,
2672 struct MR_LD_RAID *raid, bool fp_possible,
2673 u8 is_read, u32 scsi_buff_len)
2674 {
2675 u8 cpu_sel = MR_RAID_CTX_CPUSEL_0;
2676 struct RAID_CONTEXT_G35 *rctx_g35;
2677
2678 rctx_g35 = &praid_context->raid_context_g35;
2679 if (fp_possible) {
2680 if (is_read) {
2681 if ((raid->cpuAffinity.pdRead.cpu0) &&
2682 (raid->cpuAffinity.pdRead.cpu1))
2683 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2684 else if (raid->cpuAffinity.pdRead.cpu1)
2685 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2686 } else {
2687 if ((raid->cpuAffinity.pdWrite.cpu0) &&
2688 (raid->cpuAffinity.pdWrite.cpu1))
2689 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2690 else if (raid->cpuAffinity.pdWrite.cpu1)
2691 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2692 /* Fast path cache by pass capable R0/R1 VD */
2693 if ((raid->level <= 1) &&
2694 (raid->capability.fp_cache_bypass_capable)) {
2695 rctx_g35->routing_flags |=
2696 (1 << MR_RAID_CTX_ROUTINGFLAGS_SLD_SHIFT);
2697 rctx_g35->raid_flags =
2698 (MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS
2699 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT);
2700 }
2701 }
2702 } else {
2703 if (is_read) {
2704 if ((raid->cpuAffinity.ldRead.cpu0) &&
2705 (raid->cpuAffinity.ldRead.cpu1))
2706 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2707 else if (raid->cpuAffinity.ldRead.cpu1)
2708 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2709 } else {
2710 if ((raid->cpuAffinity.ldWrite.cpu0) &&
2711 (raid->cpuAffinity.ldWrite.cpu1))
2712 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2713 else if (raid->cpuAffinity.ldWrite.cpu1)
2714 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2715
2716 if (is_stream_detected(rctx_g35) &&
2717 ((raid->level == 5) || (raid->level == 6)) &&
2718 (raid->writeMode == MR_RL_WRITE_THROUGH_MODE) &&
2719 (cpu_sel == MR_RAID_CTX_CPUSEL_FCFS))
2720 cpu_sel = MR_RAID_CTX_CPUSEL_0;
2721 }
2722 }
2723
2724 rctx_g35->routing_flags |=
2725 (cpu_sel << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT);
2726
2727 /* Always give priority to MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT
2728 * vs MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS.
2729 * IO Subtype is not bitmap.
2730 */
2731 if ((fusion->pcie_bw_limitation) && (raid->level == 1) && (!is_read) &&
2732 (scsi_buff_len > MR_LARGE_IO_MIN_SIZE)) {
2733 praid_context->raid_context_g35.raid_flags =
2734 (MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT
2735 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT);
2736 }
2737 }
2738
2739 /**
2740 * megasas_build_ldio_fusion - Prepares IOs to devices
2741 * @instance: Adapter soft state
2742 * @scp: SCSI command
2743 * @cmd: Command to be prepared
2744 *
2745 * Prepares the io_request and chain elements (sg_frame) for IO
2746 * The IO can be for PD (Fast Path) or LD
2747 */
2748 static void
2749 megasas_build_ldio_fusion(struct megasas_instance *instance,
2750 struct scsi_cmnd *scp,
2751 struct megasas_cmd_fusion *cmd)
2752 {
2753 bool fp_possible;
2754 u16 ld;
2755 u32 start_lba_lo, start_lba_hi, device_id, datalength = 0;
2756 u32 scsi_buff_len;
2757 struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
2758 struct IO_REQUEST_INFO io_info;
2759 struct fusion_context *fusion;
2760 struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
2761 u8 *raidLUN;
2762 unsigned long spinlock_flags;
2763 struct MR_LD_RAID *raid = NULL;
2764 struct MR_PRIV_DEVICE *mrdev_priv;
2765 struct RAID_CONTEXT *rctx;
2766 struct RAID_CONTEXT_G35 *rctx_g35;
2767
2768 device_id = MEGASAS_DEV_INDEX(scp);
2769
2770 fusion = instance->ctrl_context;
2771
2772 io_request = cmd->io_request;
2773 rctx = &io_request->RaidContext.raid_context;
2774 rctx_g35 = &io_request->RaidContext.raid_context_g35;
2775
2776 rctx->virtual_disk_tgt_id = cpu_to_le16(device_id);
2777 rctx->status = 0;
2778 rctx->ex_status = 0;
2779
2780 start_lba_lo = 0;
2781 start_lba_hi = 0;
2782 fp_possible = false;
2783
2784 /*
2785 * 6-byte READ(0x08) or WRITE(0x0A) cdb
2786 */
2787 if (scp->cmd_len == 6) {
2788 datalength = (u32) scp->cmnd[4];
2789 start_lba_lo = ((u32) scp->cmnd[1] << 16) |
2790 ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
2791
2792 start_lba_lo &= 0x1FFFFF;
2793 }
2794
2795 /*
2796 * 10-byte READ(0x28) or WRITE(0x2A) cdb
2797 */
2798 else if (scp->cmd_len == 10) {
2799 datalength = (u32) scp->cmnd[8] |
2800 ((u32) scp->cmnd[7] << 8);
2801 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
2802 ((u32) scp->cmnd[3] << 16) |
2803 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2804 }
2805
2806 /*
2807 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
2808 */
2809 else if (scp->cmd_len == 12) {
2810 datalength = ((u32) scp->cmnd[6] << 24) |
2811 ((u32) scp->cmnd[7] << 16) |
2812 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
2813 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
2814 ((u32) scp->cmnd[3] << 16) |
2815 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2816 }
2817
2818 /*
2819 * 16-byte READ(0x88) or WRITE(0x8A) cdb
2820 */
2821 else if (scp->cmd_len == 16) {
2822 datalength = ((u32) scp->cmnd[10] << 24) |
2823 ((u32) scp->cmnd[11] << 16) |
2824 ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
2825 start_lba_lo = ((u32) scp->cmnd[6] << 24) |
2826 ((u32) scp->cmnd[7] << 16) |
2827 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
2828
2829 start_lba_hi = ((u32) scp->cmnd[2] << 24) |
2830 ((u32) scp->cmnd[3] << 16) |
2831 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2832 }
2833
2834 memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO));
2835 io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo;
2836 io_info.numBlocks = datalength;
2837 io_info.ldTgtId = device_id;
2838 io_info.r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
2839 scsi_buff_len = scsi_bufflen(scp);
2840 io_request->DataLength = cpu_to_le32(scsi_buff_len);
2841 io_info.data_arms = 1;
2842
2843 if (scp->sc_data_direction == DMA_FROM_DEVICE)
2844 io_info.isRead = 1;
2845
2846 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
2847 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
2848
2849 if (ld < instance->fw_supported_vd_count)
2850 raid = MR_LdRaidGet(ld, local_map_ptr);
2851
2852 if (!raid || (!fusion->fast_path_io)) {
2853 rctx->reg_lock_flags = 0;
2854 fp_possible = false;
2855 } else {
2856 if (MR_BuildRaidContext(instance, &io_info, rctx,
2857 local_map_ptr, &raidLUN))
2858 fp_possible = (io_info.fpOkForIo > 0) ? true : false;
2859 }
2860
2861 megasas_get_msix_index(instance, scp, cmd, io_info.data_arms);
2862
2863 if (instance->adapter_type >= VENTURA_SERIES) {
2864 /* FP for Optimal raid level 1.
2865 * All large RAID-1 writes (> 32 KiB, both WT and WB modes)
2866 * are built by the driver as LD I/Os.
2867 * All small RAID-1 WT writes (<= 32 KiB) are built as FP I/Os
2868 * (there is never a reason to process these as buffered writes)
2869 * All small RAID-1 WB writes (<= 32 KiB) are built as FP I/Os
2870 * with the SLD bit asserted.
2871 */
2872 if (io_info.r1_alt_dev_handle != MR_DEVHANDLE_INVALID) {
2873 mrdev_priv = scp->device->hostdata;
2874
2875 if (atomic_inc_return(&instance->fw_outstanding) >
2876 (instance->host->can_queue)) {
2877 fp_possible = false;
2878 atomic_dec(&instance->fw_outstanding);
2879 } else if (fusion->pcie_bw_limitation &&
2880 ((scsi_buff_len > MR_LARGE_IO_MIN_SIZE) ||
2881 (atomic_dec_if_positive(&mrdev_priv->r1_ldio_hint) > 0))) {
2882 fp_possible = false;
2883 atomic_dec(&instance->fw_outstanding);
2884 if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE)
2885 atomic_set(&mrdev_priv->r1_ldio_hint,
2886 instance->r1_ldio_hint_default);
2887 }
2888 }
2889
2890 if (!fp_possible ||
2891 (io_info.isRead && io_info.ra_capable)) {
2892 spin_lock_irqsave(&instance->stream_lock,
2893 spinlock_flags);
2894 megasas_stream_detect(instance, cmd, &io_info);
2895 spin_unlock_irqrestore(&instance->stream_lock,
2896 spinlock_flags);
2897 /* In ventura if stream detected for a read and it is
2898 * read ahead capable make this IO as LDIO
2899 */
2900 if (is_stream_detected(rctx_g35))
2901 fp_possible = false;
2902 }
2903
2904 /* If raid is NULL, set CPU affinity to default CPU0 */
2905 if (raid)
2906 megasas_set_raidflag_cpu_affinity(fusion, &io_request->RaidContext,
2907 raid, fp_possible, io_info.isRead,
2908 scsi_buff_len);
2909 else
2910 rctx_g35->routing_flags |=
2911 (MR_RAID_CTX_CPUSEL_0 << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT);
2912 }
2913
2914 if (fp_possible) {
2915 megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp,
2916 local_map_ptr, start_lba_lo);
2917 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
2918 cmd->request_desc->SCSIIO.RequestFlags =
2919 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO
2920 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2921 if (instance->adapter_type == INVADER_SERIES) {
2922 rctx->type = MPI2_TYPE_CUDA;
2923 rctx->nseg = 0x1;
2924 io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
2925 rctx->reg_lock_flags |=
2926 (MR_RL_FLAGS_GRANT_DESTINATION_CUDA |
2927 MR_RL_FLAGS_SEQ_NUM_ENABLE);
2928 } else if (instance->adapter_type >= VENTURA_SERIES) {
2929 rctx_g35->nseg_type |= (1 << RAID_CONTEXT_NSEG_SHIFT);
2930 rctx_g35->nseg_type |= (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
2931 rctx_g35->routing_flags |= (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
2932 io_request->IoFlags |=
2933 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
2934 }
2935 if (fusion->load_balance_info &&
2936 (fusion->load_balance_info[device_id].loadBalanceFlag) &&
2937 (io_info.isRead)) {
2938 io_info.devHandle =
2939 get_updated_dev_handle(instance,
2940 &fusion->load_balance_info[device_id],
2941 &io_info, local_map_ptr);
2942 scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG;
2943 cmd->pd_r1_lb = io_info.pd_after_lb;
2944 if (instance->adapter_type >= VENTURA_SERIES)
2945 rctx_g35->span_arm = io_info.span_arm;
2946 else
2947 rctx->span_arm = io_info.span_arm;
2948
2949 } else
2950 scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
2951
2952 if (instance->adapter_type >= VENTURA_SERIES)
2953 cmd->r1_alt_dev_handle = io_info.r1_alt_dev_handle;
2954 else
2955 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
2956
2957 if ((raidLUN[0] == 1) &&
2958 (local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].validHandles > 1)) {
2959 instance->dev_handle = !(instance->dev_handle);
2960 io_info.devHandle =
2961 local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].devHandle[instance->dev_handle];
2962 }
2963
2964 cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle;
2965 io_request->DevHandle = io_info.devHandle;
2966 cmd->pd_interface = io_info.pd_interface;
2967 /* populate the LUN field */
2968 memcpy(io_request->LUN, raidLUN, 8);
2969 } else {
2970 rctx->timeout_value =
2971 cpu_to_le16(local_map_ptr->raidMap.fpPdIoTimeoutSec);
2972 cmd->request_desc->SCSIIO.RequestFlags =
2973 (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO
2974 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2975 if (instance->adapter_type == INVADER_SERIES) {
2976 if (io_info.do_fp_rlbypass ||
2977 (rctx->reg_lock_flags == REGION_TYPE_UNUSED))
2978 cmd->request_desc->SCSIIO.RequestFlags =
2979 (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
2980 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2981 rctx->type = MPI2_TYPE_CUDA;
2982 rctx->reg_lock_flags |=
2983 (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 |
2984 MR_RL_FLAGS_SEQ_NUM_ENABLE);
2985 rctx->nseg = 0x1;
2986 } else if (instance->adapter_type >= VENTURA_SERIES) {
2987 rctx_g35->routing_flags |= (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
2988 rctx_g35->nseg_type |= (1 << RAID_CONTEXT_NSEG_SHIFT);
2989 rctx_g35->nseg_type |= (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
2990 }
2991 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
2992 io_request->DevHandle = cpu_to_le16(device_id);
2993
2994 } /* Not FP */
2995 }
2996
2997 /**
2998 * megasas_build_ld_nonrw_fusion - prepares non rw ios for virtual disk
2999 * @instance: Adapter soft state
3000 * @scp: SCSI command
3001 * @cmd: Command to be prepared
3002 *
3003 * Prepares the io_request frame for non-rw io cmds for vd.
3004 */
3005 static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance,
3006 struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd)
3007 {
3008 u32 device_id;
3009 struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
3010 u16 ld;
3011 struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
3012 struct fusion_context *fusion = instance->ctrl_context;
3013 u8 span, physArm;
3014 __le16 devHandle;
3015 u32 arRef, pd;
3016 struct MR_LD_RAID *raid;
3017 struct RAID_CONTEXT *pRAID_Context;
3018 u8 fp_possible = 1;
3019
3020 io_request = cmd->io_request;
3021 device_id = MEGASAS_DEV_INDEX(scmd);
3022 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
3023 io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
3024 /* get RAID_Context pointer */
3025 pRAID_Context = &io_request->RaidContext.raid_context;
3026 /* Check with FW team */
3027 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
3028 pRAID_Context->reg_lock_row_lba = 0;
3029 pRAID_Context->reg_lock_length = 0;
3030
3031 if (fusion->fast_path_io && (
3032 device_id < instance->fw_supported_vd_count)) {
3033
3034 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
3035 if (ld >= instance->fw_supported_vd_count - 1)
3036 fp_possible = 0;
3037 else {
3038 raid = MR_LdRaidGet(ld, local_map_ptr);
3039 if (!(raid->capability.fpNonRWCapable))
3040 fp_possible = 0;
3041 }
3042 } else
3043 fp_possible = 0;
3044
3045 if (!fp_possible) {
3046 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
3047 io_request->DevHandle = cpu_to_le16(device_id);
3048 io_request->LUN[1] = scmd->device->lun;
3049 pRAID_Context->timeout_value =
3050 cpu_to_le16 (scmd->request->timeout / HZ);
3051 cmd->request_desc->SCSIIO.RequestFlags =
3052 (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
3053 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3054 } else {
3055
3056 /* set RAID context values */
3057 pRAID_Context->config_seq_num = raid->seqNum;
3058 if (instance->adapter_type < VENTURA_SERIES)
3059 pRAID_Context->reg_lock_flags = REGION_TYPE_SHARED_READ;
3060 pRAID_Context->timeout_value =
3061 cpu_to_le16(raid->fpIoTimeoutForLd);
3062
3063 /* get the DevHandle for the PD (since this is
3064 fpNonRWCapable, this is a single disk RAID0) */
3065 span = physArm = 0;
3066 arRef = MR_LdSpanArrayGet(ld, span, local_map_ptr);
3067 pd = MR_ArPdGet(arRef, physArm, local_map_ptr);
3068 devHandle = MR_PdDevHandleGet(pd, local_map_ptr);
3069
3070 /* build request descriptor */
3071 cmd->request_desc->SCSIIO.RequestFlags =
3072 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
3073 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3074 cmd->request_desc->SCSIIO.DevHandle = devHandle;
3075
3076 /* populate the LUN field */
3077 memcpy(io_request->LUN, raid->LUN, 8);
3078
3079 /* build the raidScsiIO structure */
3080 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
3081 io_request->DevHandle = devHandle;
3082 }
3083 }
3084
3085 /**
3086 * megasas_build_syspd_fusion - prepares rw/non-rw ios for syspd
3087 * @instance: Adapter soft state
3088 * @scp: SCSI command
3089 * @cmd: Command to be prepared
3090 * @fp_possible: parameter to detect fast path or firmware path io.
3091 *
3092 * Prepares the io_request frame for rw/non-rw io cmds for syspds
3093 */
3094 static void
3095 megasas_build_syspd_fusion(struct megasas_instance *instance,
3096 struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd,
3097 bool fp_possible)
3098 {
3099 u32 device_id;
3100 struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
3101 u16 pd_index = 0;
3102 u16 os_timeout_value;
3103 u16 timeout_limit;
3104 struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
3105 struct RAID_CONTEXT *pRAID_Context;
3106 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
3107 struct MR_PRIV_DEVICE *mr_device_priv_data;
3108 struct fusion_context *fusion = instance->ctrl_context;
3109 pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id - 1) & 1];
3110
3111 device_id = MEGASAS_DEV_INDEX(scmd);
3112 pd_index = MEGASAS_PD_INDEX(scmd);
3113 os_timeout_value = scmd->request->timeout / HZ;
3114 mr_device_priv_data = scmd->device->hostdata;
3115 cmd->pd_interface = mr_device_priv_data->interface_type;
3116
3117 io_request = cmd->io_request;
3118 /* get RAID_Context pointer */
3119 pRAID_Context = &io_request->RaidContext.raid_context;
3120 pRAID_Context->reg_lock_flags = 0;
3121 pRAID_Context->reg_lock_row_lba = 0;
3122 pRAID_Context->reg_lock_length = 0;
3123 io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
3124 io_request->LUN[1] = scmd->device->lun;
3125 pRAID_Context->raid_flags = MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD
3126 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT;
3127
3128 /* If FW supports PD sequence number */
3129 if (instance->support_seqnum_jbod_fp) {
3130 if (instance->use_seqnum_jbod_fp &&
3131 instance->pd_list[pd_index].driveType == TYPE_DISK) {
3132
3133 /* More than 256 PD/JBOD support for Ventura */
3134 if (instance->support_morethan256jbod)
3135 pRAID_Context->virtual_disk_tgt_id =
3136 pd_sync->seq[pd_index].pd_target_id;
3137 else
3138 pRAID_Context->virtual_disk_tgt_id =
3139 cpu_to_le16(device_id +
3140 (MAX_PHYSICAL_DEVICES - 1));
3141 pRAID_Context->config_seq_num =
3142 pd_sync->seq[pd_index].seqNum;
3143 io_request->DevHandle =
3144 pd_sync->seq[pd_index].devHandle;
3145 if (instance->adapter_type >= VENTURA_SERIES) {
3146 io_request->RaidContext.raid_context_g35.routing_flags |=
3147 (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
3148 io_request->RaidContext.raid_context_g35.nseg_type |=
3149 (1 << RAID_CONTEXT_NSEG_SHIFT);
3150 io_request->RaidContext.raid_context_g35.nseg_type |=
3151 (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
3152 } else {
3153 pRAID_Context->type = MPI2_TYPE_CUDA;
3154 pRAID_Context->nseg = 0x1;
3155 pRAID_Context->reg_lock_flags |=
3156 (MR_RL_FLAGS_SEQ_NUM_ENABLE |
3157 MR_RL_FLAGS_GRANT_DESTINATION_CUDA);
3158 }
3159 } else {
3160 pRAID_Context->virtual_disk_tgt_id =
3161 cpu_to_le16(device_id +
3162 (MAX_PHYSICAL_DEVICES - 1));
3163 pRAID_Context->config_seq_num = 0;
3164 io_request->DevHandle = cpu_to_le16(0xFFFF);
3165 }
3166 } else {
3167 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
3168 pRAID_Context->config_seq_num = 0;
3169
3170 if (fusion->fast_path_io) {
3171 local_map_ptr =
3172 fusion->ld_drv_map[(instance->map_id & 1)];
3173 io_request->DevHandle =
3174 local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
3175 } else {
3176 io_request->DevHandle = cpu_to_le16(0xFFFF);
3177 }
3178 }
3179
3180 cmd->request_desc->SCSIIO.DevHandle = io_request->DevHandle;
3181
3182 megasas_get_msix_index(instance, scmd, cmd, 1);
3183
3184 if (!fp_possible) {
3185 /* system pd firmware path */
3186 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
3187 cmd->request_desc->SCSIIO.RequestFlags =
3188 (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
3189 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3190 pRAID_Context->timeout_value = cpu_to_le16(os_timeout_value);
3191 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
3192 } else {
3193 if (os_timeout_value)
3194 os_timeout_value++;
3195
3196 /* system pd Fast Path */
3197 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
3198 timeout_limit = (scmd->device->type == TYPE_DISK) ?
3199 255 : 0xFFFF;
3200 pRAID_Context->timeout_value =
3201 cpu_to_le16((os_timeout_value > timeout_limit) ?
3202 timeout_limit : os_timeout_value);
3203 if (instance->adapter_type >= INVADER_SERIES)
3204 io_request->IoFlags |=
3205 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
3206
3207 cmd->request_desc->SCSIIO.RequestFlags =
3208 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
3209 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3210 }
3211 }
3212
3213 /**
3214 * megasas_build_io_fusion - Prepares IOs to devices
3215 * @instance: Adapter soft state
3216 * @scp: SCSI command
3217 * @cmd: Command to be prepared
3218 *
3219 * Invokes helper functions to prepare request frames
3220 * and sets flags appropriate for IO/Non-IO cmd
3221 */
3222 static int
3223 megasas_build_io_fusion(struct megasas_instance *instance,
3224 struct scsi_cmnd *scp,
3225 struct megasas_cmd_fusion *cmd)
3226 {
3227 int sge_count;
3228 u8 cmd_type;
3229 struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request;
3230 struct MR_PRIV_DEVICE *mr_device_priv_data;
3231 mr_device_priv_data = scp->device->hostdata;
3232
3233 /* Zero out some fields so they don't get reused */
3234 memset(io_request->LUN, 0x0, 8);
3235 io_request->CDB.EEDP32.PrimaryReferenceTag = 0;
3236 io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0;
3237 io_request->EEDPFlags = 0;
3238 io_request->Control = 0;
3239 io_request->EEDPBlockSize = 0;
3240 io_request->ChainOffset = 0;
3241 io_request->RaidContext.raid_context.raid_flags = 0;
3242 io_request->RaidContext.raid_context.type = 0;
3243 io_request->RaidContext.raid_context.nseg = 0;
3244
3245 memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len);
3246 /*
3247 * Just the CDB length,rest of the Flags are zero
3248 * This will be modified for FP in build_ldio_fusion
3249 */
3250 io_request->IoFlags = cpu_to_le16(scp->cmd_len);
3251
3252 switch (cmd_type = megasas_cmd_type(scp)) {
3253 case READ_WRITE_LDIO:
3254 megasas_build_ldio_fusion(instance, scp, cmd);
3255 break;
3256 case NON_READ_WRITE_LDIO:
3257 megasas_build_ld_nonrw_fusion(instance, scp, cmd);
3258 break;
3259 case READ_WRITE_SYSPDIO:
3260 megasas_build_syspd_fusion(instance, scp, cmd, true);
3261 break;
3262 case NON_READ_WRITE_SYSPDIO:
3263 if (instance->secure_jbod_support ||
3264 mr_device_priv_data->is_tm_capable)
3265 megasas_build_syspd_fusion(instance, scp, cmd, false);
3266 else
3267 megasas_build_syspd_fusion(instance, scp, cmd, true);
3268 break;
3269 default:
3270 break;
3271 }
3272
3273 /*
3274 * Construct SGL
3275 */
3276
3277 sge_count = megasas_make_sgl(instance, scp, cmd);
3278
3279 if (sge_count > instance->max_num_sge || (sge_count < 0)) {
3280 dev_err(&instance->pdev->dev,
3281 "%s %d sge_count (%d) is out of range. Range is: 0-%d\n",
3282 __func__, __LINE__, sge_count, instance->max_num_sge);
3283 return 1;
3284 }
3285
3286 if (instance->adapter_type >= VENTURA_SERIES) {
3287 set_num_sge(&io_request->RaidContext.raid_context_g35, sge_count);
3288 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.routing_flags);
3289 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.nseg_type);
3290 } else {
3291 /* numSGE store lower 8 bit of sge_count.
3292 * numSGEExt store higher 8 bit of sge_count
3293 */
3294 io_request->RaidContext.raid_context.num_sge = sge_count;
3295 io_request->RaidContext.raid_context.num_sge_ext =
3296 (u8)(sge_count >> 8);
3297 }
3298
3299 io_request->SGLFlags = cpu_to_le16(MPI2_SGE_FLAGS_64_BIT_ADDRESSING);
3300
3301 if (scp->sc_data_direction == DMA_TO_DEVICE)
3302 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_WRITE);
3303 else if (scp->sc_data_direction == DMA_FROM_DEVICE)
3304 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_READ);
3305
3306 io_request->SGLOffset0 =
3307 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4;
3308
3309 io_request->SenseBufferLowAddress =
3310 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
3311 io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
3312
3313 cmd->scmd = scp;
3314 scp->SCp.ptr = (char *)cmd;
3315
3316 return 0;
3317 }
3318
3319 static union MEGASAS_REQUEST_DESCRIPTOR_UNION *
3320 megasas_get_request_descriptor(struct megasas_instance *instance, u16 index)
3321 {
3322 u8 *p;
3323 struct fusion_context *fusion;
3324
3325 fusion = instance->ctrl_context;
3326 p = fusion->req_frames_desc +
3327 sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) * index;
3328
3329 return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p;
3330 }
3331
3332
3333 /* megasas_prepate_secondRaid1_IO
3334 * It prepares the raid 1 second IO
3335 */
3336 static void megasas_prepare_secondRaid1_IO(struct megasas_instance *instance,
3337 struct megasas_cmd_fusion *cmd,
3338 struct megasas_cmd_fusion *r1_cmd)
3339 {
3340 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc, *req_desc2 = NULL;
3341 struct fusion_context *fusion;
3342 fusion = instance->ctrl_context;
3343 req_desc = cmd->request_desc;
3344 /* copy the io request frame as well as 8 SGEs data for r1 command*/
3345 memcpy(r1_cmd->io_request, cmd->io_request,
3346 (sizeof(struct MPI2_RAID_SCSI_IO_REQUEST)));
3347 memcpy(&r1_cmd->io_request->SGL, &cmd->io_request->SGL,
3348 (fusion->max_sge_in_main_msg * sizeof(union MPI2_SGE_IO_UNION)));
3349 /*sense buffer is different for r1 command*/
3350 r1_cmd->io_request->SenseBufferLowAddress =
3351 cpu_to_le32(lower_32_bits(r1_cmd->sense_phys_addr));
3352 r1_cmd->scmd = cmd->scmd;
3353 req_desc2 = megasas_get_request_descriptor(instance,
3354 (r1_cmd->index - 1));
3355 req_desc2->Words = 0;
3356 r1_cmd->request_desc = req_desc2;
3357 req_desc2->SCSIIO.SMID = cpu_to_le16(r1_cmd->index);
3358 req_desc2->SCSIIO.RequestFlags = req_desc->SCSIIO.RequestFlags;
3359 r1_cmd->request_desc->SCSIIO.DevHandle = cmd->r1_alt_dev_handle;
3360 r1_cmd->io_request->DevHandle = cmd->r1_alt_dev_handle;
3361 r1_cmd->r1_alt_dev_handle = cmd->io_request->DevHandle;
3362 cmd->io_request->RaidContext.raid_context_g35.flow_specific.peer_smid =
3363 cpu_to_le16(r1_cmd->index);
3364 r1_cmd->io_request->RaidContext.raid_context_g35.flow_specific.peer_smid =
3365 cpu_to_le16(cmd->index);
3366 /*MSIxIndex of both commands request descriptors should be same*/
3367 r1_cmd->request_desc->SCSIIO.MSIxIndex =
3368 cmd->request_desc->SCSIIO.MSIxIndex;
3369 /*span arm is different for r1 cmd*/
3370 r1_cmd->io_request->RaidContext.raid_context_g35.span_arm =
3371 cmd->io_request->RaidContext.raid_context_g35.span_arm + 1;
3372 }
3373
3374 /**
3375 * megasas_build_and_issue_cmd_fusion -Main routine for building and
3376 * issuing non IOCTL cmd
3377 * @instance: Adapter soft state
3378 * @scmd: pointer to scsi cmd from OS
3379 */
3380 static u32
3381 megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance,
3382 struct scsi_cmnd *scmd)
3383 {
3384 struct megasas_cmd_fusion *cmd, *r1_cmd = NULL;
3385 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3386 u32 index;
3387
3388 if ((megasas_cmd_type(scmd) == READ_WRITE_LDIO) &&
3389 instance->ldio_threshold &&
3390 (atomic_inc_return(&instance->ldio_outstanding) >
3391 instance->ldio_threshold)) {
3392 atomic_dec(&instance->ldio_outstanding);
3393 return SCSI_MLQUEUE_DEVICE_BUSY;
3394 }
3395
3396 if (atomic_inc_return(&instance->fw_outstanding) >
3397 instance->host->can_queue) {
3398 atomic_dec(&instance->fw_outstanding);
3399 return SCSI_MLQUEUE_HOST_BUSY;
3400 }
3401
3402 cmd = megasas_get_cmd_fusion(instance, scmd->request->tag);
3403
3404 if (!cmd) {
3405 atomic_dec(&instance->fw_outstanding);
3406 return SCSI_MLQUEUE_HOST_BUSY;
3407 }
3408
3409 index = cmd->index;
3410
3411 req_desc = megasas_get_request_descriptor(instance, index-1);
3412
3413 req_desc->Words = 0;
3414 cmd->request_desc = req_desc;
3415
3416 if (megasas_build_io_fusion(instance, scmd, cmd)) {
3417 megasas_return_cmd_fusion(instance, cmd);
3418 dev_err(&instance->pdev->dev, "Error building command\n");
3419 cmd->request_desc = NULL;
3420 atomic_dec(&instance->fw_outstanding);
3421 return SCSI_MLQUEUE_HOST_BUSY;
3422 }
3423
3424 req_desc = cmd->request_desc;
3425 req_desc->SCSIIO.SMID = cpu_to_le16(index);
3426
3427 if (cmd->io_request->ChainOffset != 0 &&
3428 cmd->io_request->ChainOffset != 0xF)
3429 dev_err(&instance->pdev->dev, "The chain offset value is not "
3430 "correct : %x\n", cmd->io_request->ChainOffset);
3431 /*
3432 * if it is raid 1/10 fp write capable.
3433 * try to get second command from pool and construct it.
3434 * From FW, it has confirmed that lba values of two PDs
3435 * corresponds to single R1/10 LD are always same
3436 *
3437 */
3438 /* driver side count always should be less than max_fw_cmds
3439 * to get new command
3440 */
3441 if (cmd->r1_alt_dev_handle != MR_DEVHANDLE_INVALID) {
3442 r1_cmd = megasas_get_cmd_fusion(instance,
3443 (scmd->request->tag + instance->max_fw_cmds));
3444 megasas_prepare_secondRaid1_IO(instance, cmd, r1_cmd);
3445 }
3446
3447
3448 /*
3449 * Issue the command to the FW
3450 */
3451
3452 megasas_fire_cmd_fusion(instance, req_desc);
3453
3454 if (r1_cmd)
3455 megasas_fire_cmd_fusion(instance, r1_cmd->request_desc);
3456
3457
3458 return 0;
3459 }
3460
3461 /**
3462 * megasas_complete_r1_command -
3463 * completes R1 FP write commands which has valid peer smid
3464 * @instance: Adapter soft state
3465 * @cmd_fusion: MPT command frame
3466 *
3467 */
3468 static inline void
3469 megasas_complete_r1_command(struct megasas_instance *instance,
3470 struct megasas_cmd_fusion *cmd)
3471 {
3472 u8 *sense, status, ex_status;
3473 u32 data_length;
3474 u16 peer_smid;
3475 struct fusion_context *fusion;
3476 struct megasas_cmd_fusion *r1_cmd = NULL;
3477 struct scsi_cmnd *scmd_local = NULL;
3478 struct RAID_CONTEXT_G35 *rctx_g35;
3479
3480 rctx_g35 = &cmd->io_request->RaidContext.raid_context_g35;
3481 fusion = instance->ctrl_context;
3482 peer_smid = le16_to_cpu(rctx_g35->flow_specific.peer_smid);
3483
3484 r1_cmd = fusion->cmd_list[peer_smid - 1];
3485 scmd_local = cmd->scmd;
3486 status = rctx_g35->status;
3487 ex_status = rctx_g35->ex_status;
3488 data_length = cmd->io_request->DataLength;
3489 sense = cmd->sense;
3490
3491 cmd->cmd_completed = true;
3492
3493 /* Check if peer command is completed or not*/
3494 if (r1_cmd->cmd_completed) {
3495 rctx_g35 = &r1_cmd->io_request->RaidContext.raid_context_g35;
3496 if (rctx_g35->status != MFI_STAT_OK) {
3497 status = rctx_g35->status;
3498 ex_status = rctx_g35->ex_status;
3499 data_length = r1_cmd->io_request->DataLength;
3500 sense = r1_cmd->sense;
3501 }
3502
3503 megasas_return_cmd_fusion(instance, r1_cmd);
3504 map_cmd_status(fusion, scmd_local, status, ex_status,
3505 le32_to_cpu(data_length), sense);
3506 if (instance->ldio_threshold &&
3507 megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)
3508 atomic_dec(&instance->ldio_outstanding);
3509 scmd_local->SCp.ptr = NULL;
3510 megasas_return_cmd_fusion(instance, cmd);
3511 scsi_dma_unmap(scmd_local);
3512 scmd_local->scsi_done(scmd_local);
3513 }
3514 }
3515
3516 /**
3517 * complete_cmd_fusion - Completes command
3518 * @instance: Adapter soft state
3519 * Completes all commands that is in reply descriptor queue
3520 */
3521 static int
3522 complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex,
3523 struct megasas_irq_context *irq_context)
3524 {
3525 union MPI2_REPLY_DESCRIPTORS_UNION *desc;
3526 struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc;
3527 struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req;
3528 struct fusion_context *fusion;
3529 struct megasas_cmd *cmd_mfi;
3530 struct megasas_cmd_fusion *cmd_fusion;
3531 u16 smid, num_completed;
3532 u8 reply_descript_type, *sense, status, extStatus;
3533 u32 device_id, data_length;
3534 union desc_value d_val;
3535 struct LD_LOAD_BALANCE_INFO *lbinfo;
3536 int threshold_reply_count = 0;
3537 struct scsi_cmnd *scmd_local = NULL;
3538 struct MR_TASK_MANAGE_REQUEST *mr_tm_req;
3539 struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_tm_req;
3540
3541 fusion = instance->ctrl_context;
3542
3543 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
3544 return IRQ_HANDLED;
3545
3546 desc = fusion->reply_frames_desc[MSIxIndex] +
3547 fusion->last_reply_idx[MSIxIndex];
3548
3549 reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
3550
3551 d_val.word = desc->Words;
3552
3553 reply_descript_type = reply_desc->ReplyFlags &
3554 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
3555
3556 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
3557 return IRQ_NONE;
3558
3559 num_completed = 0;
3560
3561 while (d_val.u.low != cpu_to_le32(UINT_MAX) &&
3562 d_val.u.high != cpu_to_le32(UINT_MAX)) {
3563
3564 smid = le16_to_cpu(reply_desc->SMID);
3565 cmd_fusion = fusion->cmd_list[smid - 1];
3566 scsi_io_req = (struct MPI2_RAID_SCSI_IO_REQUEST *)
3567 cmd_fusion->io_request;
3568
3569 scmd_local = cmd_fusion->scmd;
3570 status = scsi_io_req->RaidContext.raid_context.status;
3571 extStatus = scsi_io_req->RaidContext.raid_context.ex_status;
3572 sense = cmd_fusion->sense;
3573 data_length = scsi_io_req->DataLength;
3574
3575 switch (scsi_io_req->Function) {
3576 case MPI2_FUNCTION_SCSI_TASK_MGMT:
3577 mr_tm_req = (struct MR_TASK_MANAGE_REQUEST *)
3578 cmd_fusion->io_request;
3579 mpi_tm_req = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *)
3580 &mr_tm_req->TmRequest;
3581 dev_dbg(&instance->pdev->dev, "TM completion:"
3582 "type: 0x%x TaskMID: 0x%x\n",
3583 mpi_tm_req->TaskType, mpi_tm_req->TaskMID);
3584 complete(&cmd_fusion->done);
3585 break;
3586 case MPI2_FUNCTION_SCSI_IO_REQUEST: /*Fast Path IO.*/
3587 /* Update load balancing info */
3588 if (fusion->load_balance_info &&
3589 (cmd_fusion->scmd->SCp.Status &
3590 MEGASAS_LOAD_BALANCE_FLAG)) {
3591 device_id = MEGASAS_DEV_INDEX(scmd_local);
3592 lbinfo = &fusion->load_balance_info[device_id];
3593 atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]);
3594 cmd_fusion->scmd->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
3595 }
3596 /* Fall through - and complete IO */
3597 case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */
3598 atomic_dec(&instance->fw_outstanding);
3599 if (cmd_fusion->r1_alt_dev_handle == MR_DEVHANDLE_INVALID) {
3600 map_cmd_status(fusion, scmd_local, status,
3601 extStatus, le32_to_cpu(data_length),
3602 sense);
3603 if (instance->ldio_threshold &&
3604 (megasas_cmd_type(scmd_local) == READ_WRITE_LDIO))
3605 atomic_dec(&instance->ldio_outstanding);
3606 scmd_local->SCp.ptr = NULL;
3607 megasas_return_cmd_fusion(instance, cmd_fusion);
3608 scsi_dma_unmap(scmd_local);
3609 scmd_local->scsi_done(scmd_local);
3610 } else /* Optimal VD - R1 FP command completion. */
3611 megasas_complete_r1_command(instance, cmd_fusion);
3612 break;
3613 case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */
3614 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
3615 /* Poll mode. Dummy free.
3616 * In case of Interrupt mode, caller has reverse check.
3617 */
3618 if (cmd_mfi->flags & DRV_DCMD_POLLED_MODE) {
3619 cmd_mfi->flags &= ~DRV_DCMD_POLLED_MODE;
3620 megasas_return_cmd(instance, cmd_mfi);
3621 } else
3622 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
3623 break;
3624 }
3625
3626 fusion->last_reply_idx[MSIxIndex]++;
3627 if (fusion->last_reply_idx[MSIxIndex] >=
3628 fusion->reply_q_depth)
3629 fusion->last_reply_idx[MSIxIndex] = 0;
3630
3631 desc->Words = cpu_to_le64(ULLONG_MAX);
3632 num_completed++;
3633 threshold_reply_count++;
3634
3635 /* Get the next reply descriptor */
3636 if (!fusion->last_reply_idx[MSIxIndex])
3637 desc = fusion->reply_frames_desc[MSIxIndex];
3638 else
3639 desc++;
3640
3641 reply_desc =
3642 (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
3643
3644 d_val.word = desc->Words;
3645
3646 reply_descript_type = reply_desc->ReplyFlags &
3647 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
3648
3649 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
3650 break;
3651 /*
3652 * Write to reply post host index register after completing threshold
3653 * number of reply counts and still there are more replies in reply queue
3654 * pending to be completed
3655 */
3656 if (threshold_reply_count >= instance->threshold_reply_count) {
3657 if (instance->msix_combined)
3658 writel(((MSIxIndex & 0x7) << 24) |
3659 fusion->last_reply_idx[MSIxIndex],
3660 instance->reply_post_host_index_addr[MSIxIndex/8]);
3661 else
3662 writel((MSIxIndex << 24) |
3663 fusion->last_reply_idx[MSIxIndex],
3664 instance->reply_post_host_index_addr[0]);
3665 threshold_reply_count = 0;
3666 if (irq_context) {
3667 if (!irq_context->irq_poll_scheduled) {
3668 irq_context->irq_poll_scheduled = true;
3669 irq_context->irq_line_enable = true;
3670 irq_poll_sched(&irq_context->irqpoll);
3671 }
3672 return num_completed;
3673 }
3674 }
3675 }
3676
3677 if (num_completed) {
3678 wmb();
3679 if (instance->msix_combined)
3680 writel(((MSIxIndex & 0x7) << 24) |
3681 fusion->last_reply_idx[MSIxIndex],
3682 instance->reply_post_host_index_addr[MSIxIndex/8]);
3683 else
3684 writel((MSIxIndex << 24) |
3685 fusion->last_reply_idx[MSIxIndex],
3686 instance->reply_post_host_index_addr[0]);
3687 megasas_check_and_restore_queue_depth(instance);
3688 }
3689 return num_completed;
3690 }
3691
3692 /**
3693 * megasas_enable_irq_poll() - enable irqpoll
3694 */
3695 static void megasas_enable_irq_poll(struct megasas_instance *instance)
3696 {
3697 u32 count, i;
3698 struct megasas_irq_context *irq_ctx;
3699
3700 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3701
3702 for (i = 0; i < count; i++) {
3703 irq_ctx = &instance->irq_context[i];
3704 irq_poll_enable(&irq_ctx->irqpoll);
3705 }
3706 }
3707
3708 /**
3709 * megasas_sync_irqs - Synchronizes all IRQs owned by adapter
3710 * @instance: Adapter soft state
3711 */
3712 static void megasas_sync_irqs(unsigned long instance_addr)
3713 {
3714 u32 count, i;
3715 struct megasas_instance *instance =
3716 (struct megasas_instance *)instance_addr;
3717 struct megasas_irq_context *irq_ctx;
3718
3719 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3720
3721 for (i = 0; i < count; i++) {
3722 synchronize_irq(pci_irq_vector(instance->pdev, i));
3723 irq_ctx = &instance->irq_context[i];
3724 irq_poll_disable(&irq_ctx->irqpoll);
3725 if (irq_ctx->irq_poll_scheduled) {
3726 irq_ctx->irq_poll_scheduled = false;
3727 enable_irq(irq_ctx->os_irq);
3728 }
3729 }
3730 }
3731
3732 /**
3733 * megasas_irqpoll() - process a queue for completed reply descriptors
3734 * @irqpoll: IRQ poll structure associated with queue to poll.
3735 * @budget: Threshold of reply descriptors to process per poll.
3736 *
3737 * Return: The number of entries processed.
3738 */
3739
3740 int megasas_irqpoll(struct irq_poll *irqpoll, int budget)
3741 {
3742 struct megasas_irq_context *irq_ctx;
3743 struct megasas_instance *instance;
3744 int num_entries;
3745
3746 irq_ctx = container_of(irqpoll, struct megasas_irq_context, irqpoll);
3747 instance = irq_ctx->instance;
3748
3749 if (irq_ctx->irq_line_enable) {
3750 disable_irq(irq_ctx->os_irq);
3751 irq_ctx->irq_line_enable = false;
3752 }
3753
3754 num_entries = complete_cmd_fusion(instance, irq_ctx->MSIxIndex, irq_ctx);
3755 if (num_entries < budget) {
3756 irq_poll_complete(irqpoll);
3757 irq_ctx->irq_poll_scheduled = false;
3758 enable_irq(irq_ctx->os_irq);
3759 }
3760
3761 return num_entries;
3762 }
3763
3764 /**
3765 * megasas_complete_cmd_dpc_fusion - Completes command
3766 * @instance: Adapter soft state
3767 *
3768 * Tasklet to complete cmds
3769 */
3770 static void
3771 megasas_complete_cmd_dpc_fusion(unsigned long instance_addr)
3772 {
3773 struct megasas_instance *instance =
3774 (struct megasas_instance *)instance_addr;
3775 u32 count, MSIxIndex;
3776
3777 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3778
3779 /* If we have already declared adapter dead, donot complete cmds */
3780 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
3781 return;
3782
3783 for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++)
3784 complete_cmd_fusion(instance, MSIxIndex, NULL);
3785 }
3786
3787 /**
3788 * megasas_isr_fusion - isr entry point
3789 */
3790 static irqreturn_t megasas_isr_fusion(int irq, void *devp)
3791 {
3792 struct megasas_irq_context *irq_context = devp;
3793 struct megasas_instance *instance = irq_context->instance;
3794 u32 mfiStatus;
3795
3796 if (instance->mask_interrupts)
3797 return IRQ_NONE;
3798
3799 #if defined(ENABLE_IRQ_POLL)
3800 if (irq_context->irq_poll_scheduled)
3801 return IRQ_HANDLED;
3802 #endif
3803
3804 if (!instance->msix_vectors) {
3805 mfiStatus = instance->instancet->clear_intr(instance);
3806 if (!mfiStatus)
3807 return IRQ_NONE;
3808 }
3809
3810 /* If we are resetting, bail */
3811 if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) {
3812 instance->instancet->clear_intr(instance);
3813 return IRQ_HANDLED;
3814 }
3815
3816 return complete_cmd_fusion(instance, irq_context->MSIxIndex, irq_context)
3817 ? IRQ_HANDLED : IRQ_NONE;
3818 }
3819
3820 /**
3821 * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru
3822 * @instance: Adapter soft state
3823 * mfi_cmd: megasas_cmd pointer
3824 *
3825 */
3826 static void
3827 build_mpt_mfi_pass_thru(struct megasas_instance *instance,
3828 struct megasas_cmd *mfi_cmd)
3829 {
3830 struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain;
3831 struct MPI2_RAID_SCSI_IO_REQUEST *io_req;
3832 struct megasas_cmd_fusion *cmd;
3833 struct fusion_context *fusion;
3834 struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr;
3835
3836 fusion = instance->ctrl_context;
3837
3838 cmd = megasas_get_cmd_fusion(instance,
3839 instance->max_scsi_cmds + mfi_cmd->index);
3840
3841 /* Save the smid. To be used for returning the cmd */
3842 mfi_cmd->context.smid = cmd->index;
3843
3844 /*
3845 * For cmds where the flag is set, store the flag and check
3846 * on completion. For cmds with this flag, don't call
3847 * megasas_complete_cmd
3848 */
3849
3850 if (frame_hdr->flags & cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE))
3851 mfi_cmd->flags |= DRV_DCMD_POLLED_MODE;
3852
3853 io_req = cmd->io_request;
3854
3855 if (instance->adapter_type >= INVADER_SERIES) {
3856 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end =
3857 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL;
3858 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
3859 sgl_ptr_end->Flags = 0;
3860 }
3861
3862 mpi25_ieee_chain =
3863 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain;
3864
3865 io_req->Function = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST;
3866 io_req->SGLOffset0 = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST,
3867 SGL) / 4;
3868 io_req->ChainOffset = fusion->chain_offset_mfi_pthru;
3869
3870 mpi25_ieee_chain->Address = cpu_to_le64(mfi_cmd->frame_phys_addr);
3871
3872 mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
3873 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR;
3874
3875 mpi25_ieee_chain->Length = cpu_to_le32(instance->mfi_frame_size);
3876 }
3877
3878 /**
3879 * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd
3880 * @instance: Adapter soft state
3881 * @cmd: mfi cmd to build
3882 *
3883 */
3884 static union MEGASAS_REQUEST_DESCRIPTOR_UNION *
3885 build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
3886 {
3887 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc = NULL;
3888 u16 index;
3889
3890 build_mpt_mfi_pass_thru(instance, cmd);
3891 index = cmd->context.smid;
3892
3893 req_desc = megasas_get_request_descriptor(instance, index - 1);
3894
3895 req_desc->Words = 0;
3896 req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
3897 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3898
3899 req_desc->SCSIIO.SMID = cpu_to_le16(index);
3900
3901 return req_desc;
3902 }
3903
3904 /**
3905 * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd
3906 * @instance: Adapter soft state
3907 * @cmd: mfi cmd pointer
3908 *
3909 */
3910 static void
3911 megasas_issue_dcmd_fusion(struct megasas_instance *instance,
3912 struct megasas_cmd *cmd)
3913 {
3914 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3915
3916 req_desc = build_mpt_cmd(instance, cmd);
3917
3918 megasas_fire_cmd_fusion(instance, req_desc);
3919 return;
3920 }
3921
3922 /**
3923 * megasas_release_fusion - Reverses the FW initialization
3924 * @instance: Adapter soft state
3925 */
3926 void
3927 megasas_release_fusion(struct megasas_instance *instance)
3928 {
3929 megasas_free_ioc_init_cmd(instance);
3930 megasas_free_cmds(instance);
3931 megasas_free_cmds_fusion(instance);
3932
3933 iounmap(instance->reg_set);
3934
3935 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
3936 }
3937
3938 /**
3939 * megasas_read_fw_status_reg_fusion - returns the current FW status value
3940 * @regs: MFI register set
3941 */
3942 static u32
3943 megasas_read_fw_status_reg_fusion(struct megasas_instance *instance)
3944 {
3945 return megasas_readl(instance, &instance->reg_set->outbound_scratch_pad_0);
3946 }
3947
3948 /**
3949 * megasas_alloc_host_crash_buffer - Host buffers for Crash dump collection from Firmware
3950 * @instance: Controller's soft instance
3951 * return: Number of allocated host crash buffers
3952 */
3953 static void
3954 megasas_alloc_host_crash_buffer(struct megasas_instance *instance)
3955 {
3956 unsigned int i;
3957
3958 for (i = 0; i < MAX_CRASH_DUMP_SIZE; i++) {
3959 instance->crash_buf[i] = vzalloc(CRASH_DMA_BUF_SIZE);
3960 if (!instance->crash_buf[i]) {
3961 dev_info(&instance->pdev->dev, "Firmware crash dump "
3962 "memory allocation failed at index %d\n", i);
3963 break;
3964 }
3965 }
3966 instance->drv_buf_alloc = i;
3967 }
3968
3969 /**
3970 * megasas_free_host_crash_buffer - Host buffers for Crash dump collection from Firmware
3971 * @instance: Controller's soft instance
3972 */
3973 void
3974 megasas_free_host_crash_buffer(struct megasas_instance *instance)
3975 {
3976 unsigned int i;
3977 for (i = 0; i < instance->drv_buf_alloc; i++) {
3978 if (instance->crash_buf[i])
3979 vfree(instance->crash_buf[i]);
3980 }
3981 instance->drv_buf_index = 0;
3982 instance->drv_buf_alloc = 0;
3983 instance->fw_crash_state = UNAVAILABLE;
3984 instance->fw_crash_buffer_size = 0;
3985 }
3986
3987 /**
3988 * megasas_adp_reset_fusion - For controller reset
3989 * @regs: MFI register set
3990 */
3991 static int
3992 megasas_adp_reset_fusion(struct megasas_instance *instance,
3993 struct megasas_register_set __iomem *regs)
3994 {
3995 u32 host_diag, abs_state, retry;
3996
3997 /* Now try to reset the chip */
3998 writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3999 writel(MPI2_WRSEQ_1ST_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
4000 writel(MPI2_WRSEQ_2ND_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
4001 writel(MPI2_WRSEQ_3RD_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
4002 writel(MPI2_WRSEQ_4TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
4003 writel(MPI2_WRSEQ_5TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
4004 writel(MPI2_WRSEQ_6TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
4005
4006 /* Check that the diag write enable (DRWE) bit is on */
4007 host_diag = megasas_readl(instance, &instance->reg_set->fusion_host_diag);
4008 retry = 0;
4009 while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) {
4010 msleep(100);
4011 host_diag = megasas_readl(instance,
4012 &instance->reg_set->fusion_host_diag);
4013 if (retry++ == 100) {
4014 dev_warn(&instance->pdev->dev,
4015 "Host diag unlock failed from %s %d\n",
4016 __func__, __LINE__);
4017 break;
4018 }
4019 }
4020 if (!(host_diag & HOST_DIAG_WRITE_ENABLE))
4021 return -1;
4022
4023 /* Send chip reset command */
4024 writel(host_diag | HOST_DIAG_RESET_ADAPTER,
4025 &instance->reg_set->fusion_host_diag);
4026 msleep(3000);
4027
4028 /* Make sure reset adapter bit is cleared */
4029 host_diag = megasas_readl(instance, &instance->reg_set->fusion_host_diag);
4030 retry = 0;
4031 while (host_diag & HOST_DIAG_RESET_ADAPTER) {
4032 msleep(100);
4033 host_diag = megasas_readl(instance,
4034 &instance->reg_set->fusion_host_diag);
4035 if (retry++ == 1000) {
4036 dev_warn(&instance->pdev->dev,
4037 "Diag reset adapter never cleared %s %d\n",
4038 __func__, __LINE__);
4039 break;
4040 }
4041 }
4042 if (host_diag & HOST_DIAG_RESET_ADAPTER)
4043 return -1;
4044
4045 abs_state = instance->instancet->read_fw_status_reg(instance)
4046 & MFI_STATE_MASK;
4047 retry = 0;
4048
4049 while ((abs_state <= MFI_STATE_FW_INIT) && (retry++ < 1000)) {
4050 msleep(100);
4051 abs_state = instance->instancet->
4052 read_fw_status_reg(instance) & MFI_STATE_MASK;
4053 }
4054 if (abs_state <= MFI_STATE_FW_INIT) {
4055 dev_warn(&instance->pdev->dev,
4056 "fw state < MFI_STATE_FW_INIT, state = 0x%x %s %d\n",
4057 abs_state, __func__, __LINE__);
4058 return -1;
4059 }
4060
4061 return 0;
4062 }
4063
4064 /**
4065 * megasas_check_reset_fusion - For controller reset check
4066 * @regs: MFI register set
4067 */
4068 static int
4069 megasas_check_reset_fusion(struct megasas_instance *instance,
4070 struct megasas_register_set __iomem *regs)
4071 {
4072 return 0;
4073 }
4074
4075 /**
4076 * megasas_trigger_snap_dump - Trigger snap dump in FW
4077 * @instance: Soft instance of adapter
4078 */
4079 static inline void megasas_trigger_snap_dump(struct megasas_instance *instance)
4080 {
4081 int j;
4082 u32 fw_state, abs_state;
4083
4084 if (!instance->disableOnlineCtrlReset) {
4085 dev_info(&instance->pdev->dev, "Trigger snap dump\n");
4086 writel(MFI_ADP_TRIGGER_SNAP_DUMP,
4087 &instance->reg_set->doorbell);
4088 readl(&instance->reg_set->doorbell);
4089 }
4090
4091 for (j = 0; j < instance->snapdump_wait_time; j++) {
4092 abs_state = instance->instancet->read_fw_status_reg(instance);
4093 fw_state = abs_state & MFI_STATE_MASK;
4094 if (fw_state == MFI_STATE_FAULT) {
4095 dev_printk(KERN_ERR, &instance->pdev->dev,
4096 "FW in FAULT state Fault code:0x%x subcode:0x%x func:%s\n",
4097 abs_state & MFI_STATE_FAULT_CODE,
4098 abs_state & MFI_STATE_FAULT_SUBCODE, __func__);
4099 return;
4100 }
4101 msleep(1000);
4102 }
4103 }
4104
4105 /* This function waits for outstanding commands on fusion to complete */
4106 static int
4107 megasas_wait_for_outstanding_fusion(struct megasas_instance *instance,
4108 int reason, int *convert)
4109 {
4110 int i, outstanding, retval = 0, hb_seconds_missed = 0;
4111 u32 fw_state, abs_state;
4112 u32 waittime_for_io_completion;
4113
4114 waittime_for_io_completion =
4115 min_t(u32, resetwaittime,
4116 (resetwaittime - instance->snapdump_wait_time));
4117
4118 if (reason == MFI_IO_TIMEOUT_OCR) {
4119 dev_info(&instance->pdev->dev,
4120 "MFI command is timed out\n");
4121 megasas_complete_cmd_dpc_fusion((unsigned long)instance);
4122 if (instance->snapdump_wait_time)
4123 megasas_trigger_snap_dump(instance);
4124 retval = 1;
4125 goto out;
4126 }
4127
4128 for (i = 0; i < waittime_for_io_completion; i++) {
4129 /* Check if firmware is in fault state */
4130 abs_state = instance->instancet->read_fw_status_reg(instance);
4131 fw_state = abs_state & MFI_STATE_MASK;
4132 if (fw_state == MFI_STATE_FAULT) {
4133 dev_printk(KERN_ERR, &instance->pdev->dev,
4134 "FW in FAULT state Fault code:0x%x subcode:0x%x func:%s\n",
4135 abs_state & MFI_STATE_FAULT_CODE,
4136 abs_state & MFI_STATE_FAULT_SUBCODE, __func__);
4137 megasas_complete_cmd_dpc_fusion((unsigned long)instance);
4138 if (instance->requestorId && reason) {
4139 dev_warn(&instance->pdev->dev, "SR-IOV Found FW in FAULT"
4140 " state while polling during"
4141 " I/O timeout handling for %d\n",
4142 instance->host->host_no);
4143 *convert = 1;
4144 }
4145
4146 retval = 1;
4147 goto out;
4148 }
4149
4150
4151 /* If SR-IOV VF mode & heartbeat timeout, don't wait */
4152 if (instance->requestorId && !reason) {
4153 retval = 1;
4154 goto out;
4155 }
4156
4157 /* If SR-IOV VF mode & I/O timeout, check for HB timeout */
4158 if (instance->requestorId && (reason == SCSIIO_TIMEOUT_OCR)) {
4159 if (instance->hb_host_mem->HB.fwCounter !=
4160 instance->hb_host_mem->HB.driverCounter) {
4161 instance->hb_host_mem->HB.driverCounter =
4162 instance->hb_host_mem->HB.fwCounter;
4163 hb_seconds_missed = 0;
4164 } else {
4165 hb_seconds_missed++;
4166 if (hb_seconds_missed ==
4167 (MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF/HZ)) {
4168 dev_warn(&instance->pdev->dev, "SR-IOV:"
4169 " Heartbeat never completed "
4170 " while polling during I/O "
4171 " timeout handling for "
4172 "scsi%d.\n",
4173 instance->host->host_no);
4174 *convert = 1;
4175 retval = 1;
4176 goto out;
4177 }
4178 }
4179 }
4180
4181 megasas_complete_cmd_dpc_fusion((unsigned long)instance);
4182 outstanding = atomic_read(&instance->fw_outstanding);
4183 if (!outstanding)
4184 goto out;
4185
4186 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
4187 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
4188 "commands to complete for scsi%d\n", i,
4189 outstanding, instance->host->host_no);
4190 }
4191 msleep(1000);
4192 }
4193
4194 if (instance->snapdump_wait_time) {
4195 megasas_trigger_snap_dump(instance);
4196 retval = 1;
4197 goto out;
4198 }
4199
4200 if (atomic_read(&instance->fw_outstanding)) {
4201 dev_err(&instance->pdev->dev, "pending commands remain after waiting, "
4202 "will reset adapter scsi%d.\n",
4203 instance->host->host_no);
4204 *convert = 1;
4205 retval = 1;
4206 }
4207
4208 out:
4209 return retval;
4210 }
4211
4212 void megasas_reset_reply_desc(struct megasas_instance *instance)
4213 {
4214 int i, j, count;
4215 struct fusion_context *fusion;
4216 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
4217
4218 fusion = instance->ctrl_context;
4219 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
4220 for (i = 0 ; i < count ; i++) {
4221 fusion->last_reply_idx[i] = 0;
4222 reply_desc = fusion->reply_frames_desc[i];
4223 for (j = 0 ; j < fusion->reply_q_depth; j++, reply_desc++)
4224 reply_desc->Words = cpu_to_le64(ULLONG_MAX);
4225 }
4226 }
4227
4228 /*
4229 * megasas_refire_mgmt_cmd : Re-fire management commands
4230 * @instance: Controller's soft instance
4231 */
4232 void megasas_refire_mgmt_cmd(struct megasas_instance *instance,
4233 bool return_ioctl)
4234 {
4235 int j;
4236 struct megasas_cmd_fusion *cmd_fusion;
4237 struct fusion_context *fusion;
4238 struct megasas_cmd *cmd_mfi;
4239 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
4240 u16 smid;
4241 bool refire_cmd = 0;
4242 u8 result;
4243 u32 opcode = 0;
4244
4245 fusion = instance->ctrl_context;
4246
4247 /* Re-fire management commands.
4248 * Do not traverse complet MPT frame pool. Start from max_scsi_cmds.
4249 */
4250 for (j = instance->max_scsi_cmds ; j < instance->max_fw_cmds; j++) {
4251 cmd_fusion = fusion->cmd_list[j];
4252 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
4253 smid = le16_to_cpu(cmd_mfi->context.smid);
4254 result = REFIRE_CMD;
4255
4256 if (!smid)
4257 continue;
4258
4259 req_desc = megasas_get_request_descriptor(instance, smid - 1);
4260
4261 switch (cmd_mfi->frame->hdr.cmd) {
4262 case MFI_CMD_DCMD:
4263 opcode = le32_to_cpu(cmd_mfi->frame->dcmd.opcode);
4264 /* Do not refire shutdown command */
4265 if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
4266 cmd_mfi->frame->dcmd.cmd_status = MFI_STAT_OK;
4267 result = COMPLETE_CMD;
4268 break;
4269 }
4270
4271 refire_cmd = ((opcode != MR_DCMD_LD_MAP_GET_INFO)) &&
4272 (opcode != MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
4273 !(cmd_mfi->flags & DRV_DCMD_SKIP_REFIRE);
4274
4275 if (!refire_cmd)
4276 result = RETURN_CMD;
4277
4278 break;
4279 case MFI_CMD_NVME:
4280 if (!instance->support_nvme_passthru) {
4281 cmd_mfi->frame->hdr.cmd_status = MFI_STAT_INVALID_CMD;
4282 result = COMPLETE_CMD;
4283 }
4284
4285 break;
4286 case MFI_CMD_TOOLBOX:
4287 if (!instance->support_pci_lane_margining) {
4288 cmd_mfi->frame->hdr.cmd_status = MFI_STAT_INVALID_CMD;
4289 result = COMPLETE_CMD;
4290 }
4291
4292 break;
4293 default:
4294 break;
4295 }
4296
4297 if (return_ioctl && cmd_mfi->sync_cmd &&
4298 cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT) {
4299 dev_err(&instance->pdev->dev,
4300 "return -EBUSY from %s %d cmd 0x%x opcode 0x%x\n",
4301 __func__, __LINE__, cmd_mfi->frame->hdr.cmd,
4302 le32_to_cpu(cmd_mfi->frame->dcmd.opcode));
4303 cmd_mfi->cmd_status_drv = DCMD_BUSY;
4304 result = COMPLETE_CMD;
4305 }
4306
4307 switch (result) {
4308 case REFIRE_CMD:
4309 megasas_fire_cmd_fusion(instance, req_desc);
4310 break;
4311 case RETURN_CMD:
4312 megasas_return_cmd(instance, cmd_mfi);
4313 break;
4314 case COMPLETE_CMD:
4315 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
4316 break;
4317 }
4318 }
4319 }
4320
4321 /*
4322 * megasas_return_polled_cmds: Return polled mode commands back to the pool
4323 * before initiating an OCR.
4324 * @instance: Controller's soft instance
4325 */
4326 static void
4327 megasas_return_polled_cmds(struct megasas_instance *instance)
4328 {
4329 int i;
4330 struct megasas_cmd_fusion *cmd_fusion;
4331 struct fusion_context *fusion;
4332 struct megasas_cmd *cmd_mfi;
4333
4334 fusion = instance->ctrl_context;
4335
4336 for (i = instance->max_scsi_cmds; i < instance->max_fw_cmds; i++) {
4337 cmd_fusion = fusion->cmd_list[i];
4338 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
4339
4340 if (cmd_mfi->flags & DRV_DCMD_POLLED_MODE) {
4341 if (megasas_dbg_lvl & OCR_DEBUG)
4342 dev_info(&instance->pdev->dev,
4343 "%s %d return cmd 0x%x opcode 0x%x\n",
4344 __func__, __LINE__, cmd_mfi->frame->hdr.cmd,
4345 le32_to_cpu(cmd_mfi->frame->dcmd.opcode));
4346 cmd_mfi->flags &= ~DRV_DCMD_POLLED_MODE;
4347 megasas_return_cmd(instance, cmd_mfi);
4348 }
4349 }
4350 }
4351
4352 /*
4353 * megasas_track_scsiio : Track SCSI IOs outstanding to a SCSI device
4354 * @instance: per adapter struct
4355 * @channel: the channel assigned by the OS
4356 * @id: the id assigned by the OS
4357 *
4358 * Returns SUCCESS if no IOs pending to SCSI device, else return FAILED
4359 */
4360
4361 static int megasas_track_scsiio(struct megasas_instance *instance,
4362 int id, int channel)
4363 {
4364 int i, found = 0;
4365 struct megasas_cmd_fusion *cmd_fusion;
4366 struct fusion_context *fusion;
4367 fusion = instance->ctrl_context;
4368
4369 for (i = 0 ; i < instance->max_scsi_cmds; i++) {
4370 cmd_fusion = fusion->cmd_list[i];
4371 if (cmd_fusion->scmd &&
4372 (cmd_fusion->scmd->device->id == id &&
4373 cmd_fusion->scmd->device->channel == channel)) {
4374 dev_info(&instance->pdev->dev,
4375 "SCSI commands pending to target"
4376 "channel %d id %d \tSMID: 0x%x\n",
4377 channel, id, cmd_fusion->index);
4378 scsi_print_command(cmd_fusion->scmd);
4379 found = 1;
4380 break;
4381 }
4382 }
4383
4384 return found ? FAILED : SUCCESS;
4385 }
4386
4387 /**
4388 * megasas_tm_response_code - translation of device response code
4389 * @ioc: per adapter object
4390 * @mpi_reply: MPI reply returned by firmware
4391 *
4392 * Return nothing.
4393 */
4394 static void
4395 megasas_tm_response_code(struct megasas_instance *instance,
4396 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply)
4397 {
4398 char *desc;
4399
4400 switch (mpi_reply->ResponseCode) {
4401 case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE:
4402 desc = "task management request completed";
4403 break;
4404 case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME:
4405 desc = "invalid frame";
4406 break;
4407 case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED:
4408 desc = "task management request not supported";
4409 break;
4410 case MPI2_SCSITASKMGMT_RSP_TM_FAILED:
4411 desc = "task management request failed";
4412 break;
4413 case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED:
4414 desc = "task management request succeeded";
4415 break;
4416 case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN:
4417 desc = "invalid lun";
4418 break;
4419 case 0xA:
4420 desc = "overlapped tag attempted";
4421 break;
4422 case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC:
4423 desc = "task queued, however not sent to target";
4424 break;
4425 default:
4426 desc = "unknown";
4427 break;
4428 }
4429 dev_dbg(&instance->pdev->dev, "response_code(%01x): %s\n",
4430 mpi_reply->ResponseCode, desc);
4431 dev_dbg(&instance->pdev->dev,
4432 "TerminationCount/DevHandle/Function/TaskType/IOCStat/IOCLoginfo"
4433 " 0x%x/0x%x/0x%x/0x%x/0x%x/0x%x\n",
4434 mpi_reply->TerminationCount, mpi_reply->DevHandle,
4435 mpi_reply->Function, mpi_reply->TaskType,
4436 mpi_reply->IOCStatus, mpi_reply->IOCLogInfo);
4437 }
4438
4439 /**
4440 * megasas_issue_tm - main routine for sending tm requests
4441 * @instance: per adapter struct
4442 * @device_handle: device handle
4443 * @channel: the channel assigned by the OS
4444 * @id: the id assigned by the OS
4445 * @type: MPI2_SCSITASKMGMT_TASKTYPE__XXX (defined in megaraid_sas_fusion.c)
4446 * @smid_task: smid assigned to the task
4447 * @m_type: TM_MUTEX_ON or TM_MUTEX_OFF
4448 * Context: user
4449 *
4450 * MegaRaid use MPT interface for Task Magement request.
4451 * A generic API for sending task management requests to firmware.
4452 *
4453 * Return SUCCESS or FAILED.
4454 */
4455 static int
4456 megasas_issue_tm(struct megasas_instance *instance, u16 device_handle,
4457 uint channel, uint id, u16 smid_task, u8 type,
4458 struct MR_PRIV_DEVICE *mr_device_priv_data)
4459 {
4460 struct MR_TASK_MANAGE_REQUEST *mr_request;
4461 struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_request;
4462 unsigned long timeleft;
4463 struct megasas_cmd_fusion *cmd_fusion;
4464 struct megasas_cmd *cmd_mfi;
4465 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
4466 struct fusion_context *fusion = NULL;
4467 struct megasas_cmd_fusion *scsi_lookup;
4468 int rc;
4469 int timeout = MEGASAS_DEFAULT_TM_TIMEOUT;
4470 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply;
4471
4472 fusion = instance->ctrl_context;
4473
4474 cmd_mfi = megasas_get_cmd(instance);
4475
4476 if (!cmd_mfi) {
4477 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
4478 __func__, __LINE__);
4479 return -ENOMEM;
4480 }
4481
4482 cmd_fusion = megasas_get_cmd_fusion(instance,
4483 instance->max_scsi_cmds + cmd_mfi->index);
4484
4485 /* Save the smid. To be used for returning the cmd */
4486 cmd_mfi->context.smid = cmd_fusion->index;
4487
4488 req_desc = megasas_get_request_descriptor(instance,
4489 (cmd_fusion->index - 1));
4490
4491 cmd_fusion->request_desc = req_desc;
4492 req_desc->Words = 0;
4493
4494 mr_request = (struct MR_TASK_MANAGE_REQUEST *) cmd_fusion->io_request;
4495 memset(mr_request, 0, sizeof(struct MR_TASK_MANAGE_REQUEST));
4496 mpi_request = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) &mr_request->TmRequest;
4497 mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
4498 mpi_request->DevHandle = cpu_to_le16(device_handle);
4499 mpi_request->TaskType = type;
4500 mpi_request->TaskMID = cpu_to_le16(smid_task);
4501 mpi_request->LUN[1] = 0;
4502
4503
4504 req_desc = cmd_fusion->request_desc;
4505 req_desc->HighPriority.SMID = cpu_to_le16(cmd_fusion->index);
4506 req_desc->HighPriority.RequestFlags =
4507 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
4508 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
4509 req_desc->HighPriority.MSIxIndex = 0;
4510 req_desc->HighPriority.LMID = 0;
4511 req_desc->HighPriority.Reserved1 = 0;
4512
4513 if (channel < MEGASAS_MAX_PD_CHANNELS)
4514 mr_request->tmReqFlags.isTMForPD = 1;
4515 else
4516 mr_request->tmReqFlags.isTMForLD = 1;
4517
4518 init_completion(&cmd_fusion->done);
4519 megasas_fire_cmd_fusion(instance, req_desc);
4520
4521 switch (type) {
4522 case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
4523 timeout = mr_device_priv_data->task_abort_tmo;
4524 break;
4525 case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
4526 timeout = mr_device_priv_data->target_reset_tmo;
4527 break;
4528 }
4529
4530 timeleft = wait_for_completion_timeout(&cmd_fusion->done, timeout * HZ);
4531
4532 if (!timeleft) {
4533 dev_err(&instance->pdev->dev,
4534 "task mgmt type 0x%x timed out\n", type);
4535 cmd_mfi->flags |= DRV_DCMD_SKIP_REFIRE;
4536 mutex_unlock(&instance->reset_mutex);
4537 rc = megasas_reset_fusion(instance->host, MFI_IO_TIMEOUT_OCR);
4538 mutex_lock(&instance->reset_mutex);
4539 return rc;
4540 }
4541
4542 mpi_reply = (struct MPI2_SCSI_TASK_MANAGE_REPLY *) &mr_request->TMReply;
4543 megasas_tm_response_code(instance, mpi_reply);
4544
4545 megasas_return_cmd(instance, cmd_mfi);
4546 rc = SUCCESS;
4547 switch (type) {
4548 case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
4549 scsi_lookup = fusion->cmd_list[smid_task - 1];
4550
4551 if (scsi_lookup->scmd == NULL)
4552 break;
4553 else {
4554 instance->instancet->disable_intr(instance);
4555 megasas_sync_irqs((unsigned long)instance);
4556 instance->instancet->enable_intr(instance);
4557 megasas_enable_irq_poll(instance);
4558 if (scsi_lookup->scmd == NULL)
4559 break;
4560 }
4561 rc = FAILED;
4562 break;
4563
4564 case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
4565 if ((channel == 0xFFFFFFFF) && (id == 0xFFFFFFFF))
4566 break;
4567 instance->instancet->disable_intr(instance);
4568 megasas_sync_irqs((unsigned long)instance);
4569 rc = megasas_track_scsiio(instance, id, channel);
4570 instance->instancet->enable_intr(instance);
4571 megasas_enable_irq_poll(instance);
4572
4573 break;
4574 case MPI2_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET:
4575 case MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK:
4576 break;
4577 default:
4578 rc = FAILED;
4579 break;
4580 }
4581
4582 return rc;
4583
4584 }
4585
4586 /*
4587 * megasas_fusion_smid_lookup : Look for fusion command correpspodning to SCSI
4588 * @instance: per adapter struct
4589 *
4590 * Return Non Zero index, if SMID found in outstanding commands
4591 */
4592 static u16 megasas_fusion_smid_lookup(struct scsi_cmnd *scmd)
4593 {
4594 int i, ret = 0;
4595 struct megasas_instance *instance;
4596 struct megasas_cmd_fusion *cmd_fusion;
4597 struct fusion_context *fusion;
4598
4599 instance = (struct megasas_instance *)scmd->device->host->hostdata;
4600
4601 fusion = instance->ctrl_context;
4602
4603 for (i = 0; i < instance->max_scsi_cmds; i++) {
4604 cmd_fusion = fusion->cmd_list[i];
4605 if (cmd_fusion->scmd && (cmd_fusion->scmd == scmd)) {
4606 scmd_printk(KERN_NOTICE, scmd, "Abort request is for"
4607 " SMID: %d\n", cmd_fusion->index);
4608 ret = cmd_fusion->index;
4609 break;
4610 }
4611 }
4612
4613 return ret;
4614 }
4615
4616 /*
4617 * megasas_get_tm_devhandle - Get devhandle for TM request
4618 * @sdev- OS provided scsi device
4619 *
4620 * Returns- devhandle/targetID of SCSI device
4621 */
4622 static u16 megasas_get_tm_devhandle(struct scsi_device *sdev)
4623 {
4624 u16 pd_index = 0;
4625 u32 device_id;
4626 struct megasas_instance *instance;
4627 struct fusion_context *fusion;
4628 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
4629 u16 devhandle = (u16)ULONG_MAX;
4630
4631 instance = (struct megasas_instance *)sdev->host->hostdata;
4632 fusion = instance->ctrl_context;
4633
4634 if (!MEGASAS_IS_LOGICAL(sdev)) {
4635 if (instance->use_seqnum_jbod_fp) {
4636 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL)
4637 + sdev->id;
4638 pd_sync = (void *)fusion->pd_seq_sync
4639 [(instance->pd_seq_map_id - 1) & 1];
4640 devhandle = pd_sync->seq[pd_index].devHandle;
4641 } else
4642 sdev_printk(KERN_ERR, sdev, "Firmware expose tmCapable"
4643 " without JBOD MAP support from %s %d\n", __func__, __LINE__);
4644 } else {
4645 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
4646 + sdev->id;
4647 devhandle = device_id;
4648 }
4649
4650 return devhandle;
4651 }
4652
4653 /*
4654 * megasas_task_abort_fusion : SCSI task abort function for fusion adapters
4655 * @scmd : pointer to scsi command object
4656 *
4657 * Return SUCCESS, if command aborted else FAILED
4658 */
4659
4660 int megasas_task_abort_fusion(struct scsi_cmnd *scmd)
4661 {
4662 struct megasas_instance *instance;
4663 u16 smid, devhandle;
4664 int ret;
4665 struct MR_PRIV_DEVICE *mr_device_priv_data;
4666 mr_device_priv_data = scmd->device->hostdata;
4667
4668 instance = (struct megasas_instance *)scmd->device->host->hostdata;
4669
4670 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
4671 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL,"
4672 "SCSI host:%d\n", instance->host->host_no);
4673 ret = FAILED;
4674 return ret;
4675 }
4676
4677 if (!mr_device_priv_data) {
4678 sdev_printk(KERN_INFO, scmd->device, "device been deleted! "
4679 "scmd(%p)\n", scmd);
4680 scmd->result = DID_NO_CONNECT << 16;
4681 ret = SUCCESS;
4682 goto out;
4683 }
4684
4685 if (!mr_device_priv_data->is_tm_capable) {
4686 ret = FAILED;
4687 goto out;
4688 }
4689
4690 mutex_lock(&instance->reset_mutex);
4691
4692 smid = megasas_fusion_smid_lookup(scmd);
4693
4694 if (!smid) {
4695 ret = SUCCESS;
4696 scmd_printk(KERN_NOTICE, scmd, "Command for which abort is"
4697 " issued is not found in outstanding commands\n");
4698 mutex_unlock(&instance->reset_mutex);
4699 goto out;
4700 }
4701
4702 devhandle = megasas_get_tm_devhandle(scmd->device);
4703
4704 if (devhandle == (u16)ULONG_MAX) {
4705 ret = SUCCESS;
4706 sdev_printk(KERN_INFO, scmd->device,
4707 "task abort issued for invalid devhandle\n");
4708 mutex_unlock(&instance->reset_mutex);
4709 goto out;
4710 }
4711 sdev_printk(KERN_INFO, scmd->device,
4712 "attempting task abort! scmd(0x%p) tm_dev_handle 0x%x\n",
4713 scmd, devhandle);
4714
4715 mr_device_priv_data->tm_busy = 1;
4716 ret = megasas_issue_tm(instance, devhandle,
4717 scmd->device->channel, scmd->device->id, smid,
4718 MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK,
4719 mr_device_priv_data);
4720 mr_device_priv_data->tm_busy = 0;
4721
4722 mutex_unlock(&instance->reset_mutex);
4723 scmd_printk(KERN_INFO, scmd, "task abort %s!! scmd(0x%p)\n",
4724 ((ret == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
4725 out:
4726 scsi_print_command(scmd);
4727 if (megasas_dbg_lvl & TM_DEBUG)
4728 megasas_dump_fusion_io(scmd);
4729
4730 return ret;
4731 }
4732
4733 /*
4734 * megasas_reset_target_fusion : target reset function for fusion adapters
4735 * scmd: SCSI command pointer
4736 *
4737 * Returns SUCCESS if all commands associated with target aborted else FAILED
4738 */
4739
4740 int megasas_reset_target_fusion(struct scsi_cmnd *scmd)
4741 {
4742
4743 struct megasas_instance *instance;
4744 int ret = FAILED;
4745 u16 devhandle;
4746 struct MR_PRIV_DEVICE *mr_device_priv_data;
4747 mr_device_priv_data = scmd->device->hostdata;
4748
4749 instance = (struct megasas_instance *)scmd->device->host->hostdata;
4750
4751 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
4752 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL,"
4753 "SCSI host:%d\n", instance->host->host_no);
4754 ret = FAILED;
4755 return ret;
4756 }
4757
4758 if (!mr_device_priv_data) {
4759 sdev_printk(KERN_INFO, scmd->device,
4760 "device been deleted! scmd: (0x%p)\n", scmd);
4761 scmd->result = DID_NO_CONNECT << 16;
4762 ret = SUCCESS;
4763 goto out;
4764 }
4765
4766 if (!mr_device_priv_data->is_tm_capable) {
4767 ret = FAILED;
4768 goto out;
4769 }
4770
4771 mutex_lock(&instance->reset_mutex);
4772 devhandle = megasas_get_tm_devhandle(scmd->device);
4773
4774 if (devhandle == (u16)ULONG_MAX) {
4775 ret = SUCCESS;
4776 sdev_printk(KERN_INFO, scmd->device,
4777 "target reset issued for invalid devhandle\n");
4778 mutex_unlock(&instance->reset_mutex);
4779 goto out;
4780 }
4781
4782 sdev_printk(KERN_INFO, scmd->device,
4783 "attempting target reset! scmd(0x%p) tm_dev_handle: 0x%x\n",
4784 scmd, devhandle);
4785 mr_device_priv_data->tm_busy = 1;
4786 ret = megasas_issue_tm(instance, devhandle,
4787 scmd->device->channel, scmd->device->id, 0,
4788 MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET,
4789 mr_device_priv_data);
4790 mr_device_priv_data->tm_busy = 0;
4791 mutex_unlock(&instance->reset_mutex);
4792 scmd_printk(KERN_NOTICE, scmd, "target reset %s!!\n",
4793 (ret == SUCCESS) ? "SUCCESS" : "FAILED");
4794
4795 out:
4796 return ret;
4797 }
4798
4799 /*SRIOV get other instance in cluster if any*/
4800 static struct
4801 megasas_instance *megasas_get_peer_instance(struct megasas_instance *instance)
4802 {
4803 int i;
4804
4805 for (i = 0; i < MAX_MGMT_ADAPTERS; i++) {
4806 if (megasas_mgmt_info.instance[i] &&
4807 (megasas_mgmt_info.instance[i] != instance) &&
4808 megasas_mgmt_info.instance[i]->requestorId &&
4809 megasas_mgmt_info.instance[i]->peerIsPresent &&
4810 (memcmp((megasas_mgmt_info.instance[i]->clusterId),
4811 instance->clusterId, MEGASAS_CLUSTER_ID_SIZE) == 0))
4812 return megasas_mgmt_info.instance[i];
4813 }
4814 return NULL;
4815 }
4816
4817 /* Check for a second path that is currently UP */
4818 int megasas_check_mpio_paths(struct megasas_instance *instance,
4819 struct scsi_cmnd *scmd)
4820 {
4821 struct megasas_instance *peer_instance = NULL;
4822 int retval = (DID_REQUEUE << 16);
4823
4824 if (instance->peerIsPresent) {
4825 peer_instance = megasas_get_peer_instance(instance);
4826 if ((peer_instance) &&
4827 (atomic_read(&peer_instance->adprecovery) ==
4828 MEGASAS_HBA_OPERATIONAL))
4829 retval = (DID_NO_CONNECT << 16);
4830 }
4831 return retval;
4832 }
4833
4834 /* Core fusion reset function */
4835 int megasas_reset_fusion(struct Scsi_Host *shost, int reason)
4836 {
4837 int retval = SUCCESS, i, j, convert = 0;
4838 struct megasas_instance *instance;
4839 struct megasas_cmd_fusion *cmd_fusion, *r1_cmd;
4840 struct fusion_context *fusion;
4841 u32 abs_state, status_reg, reset_adapter, fpio_count = 0;
4842 u32 io_timeout_in_crash_mode = 0;
4843 struct scsi_cmnd *scmd_local = NULL;
4844 struct scsi_device *sdev;
4845 int ret_target_prop = DCMD_FAILED;
4846 bool is_target_prop = false;
4847 bool do_adp_reset = true;
4848 int max_reset_tries = MEGASAS_FUSION_MAX_RESET_TRIES;
4849
4850 instance = (struct megasas_instance *)shost->hostdata;
4851 fusion = instance->ctrl_context;
4852
4853 mutex_lock(&instance->reset_mutex);
4854
4855 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
4856 dev_warn(&instance->pdev->dev, "Hardware critical error, "
4857 "returning FAILED for scsi%d.\n",
4858 instance->host->host_no);
4859 mutex_unlock(&instance->reset_mutex);
4860 return FAILED;
4861 }
4862 status_reg = instance->instancet->read_fw_status_reg(instance);
4863 abs_state = status_reg & MFI_STATE_MASK;
4864
4865 /* IO timeout detected, forcibly put FW in FAULT state */
4866 if (abs_state != MFI_STATE_FAULT && instance->crash_dump_buf &&
4867 instance->crash_dump_app_support && reason) {
4868 dev_info(&instance->pdev->dev, "IO/DCMD timeout is detected, "
4869 "forcibly FAULT Firmware\n");
4870 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4871 status_reg = megasas_readl(instance, &instance->reg_set->doorbell);
4872 writel(status_reg | MFI_STATE_FORCE_OCR,
4873 &instance->reg_set->doorbell);
4874 readl(&instance->reg_set->doorbell);
4875 mutex_unlock(&instance->reset_mutex);
4876 do {
4877 ssleep(3);
4878 io_timeout_in_crash_mode++;
4879 dev_dbg(&instance->pdev->dev, "waiting for [%d] "
4880 "seconds for crash dump collection and OCR "
4881 "to be done\n", (io_timeout_in_crash_mode * 3));
4882 } while ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
4883 (io_timeout_in_crash_mode < 80));
4884
4885 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) {
4886 dev_info(&instance->pdev->dev, "OCR done for IO "
4887 "timeout case\n");
4888 retval = SUCCESS;
4889 } else {
4890 dev_info(&instance->pdev->dev, "Controller is not "
4891 "operational after 240 seconds wait for IO "
4892 "timeout case in FW crash dump mode\n do "
4893 "OCR/kill adapter\n");
4894 retval = megasas_reset_fusion(shost, 0);
4895 }
4896 return retval;
4897 }
4898
4899 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
4900 del_timer_sync(&instance->sriov_heartbeat_timer);
4901 set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
4902 set_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE, &instance->reset_flags);
4903 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_POLLING);
4904 instance->instancet->disable_intr(instance);
4905 megasas_sync_irqs((unsigned long)instance);
4906
4907 /* First try waiting for commands to complete */
4908 if (megasas_wait_for_outstanding_fusion(instance, reason,
4909 &convert)) {
4910 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4911 dev_warn(&instance->pdev->dev, "resetting fusion "
4912 "adapter scsi%d.\n", instance->host->host_no);
4913 if (convert)
4914 reason = 0;
4915
4916 if (megasas_dbg_lvl & OCR_DEBUG)
4917 dev_info(&instance->pdev->dev, "\nPending SCSI commands:\n");
4918
4919 /* Now return commands back to the OS */
4920 for (i = 0 ; i < instance->max_scsi_cmds; i++) {
4921 cmd_fusion = fusion->cmd_list[i];
4922 /*check for extra commands issued by driver*/
4923 if (instance->adapter_type >= VENTURA_SERIES) {
4924 r1_cmd = fusion->cmd_list[i + instance->max_fw_cmds];
4925 megasas_return_cmd_fusion(instance, r1_cmd);
4926 }
4927 scmd_local = cmd_fusion->scmd;
4928 if (cmd_fusion->scmd) {
4929 if (megasas_dbg_lvl & OCR_DEBUG) {
4930 sdev_printk(KERN_INFO,
4931 cmd_fusion->scmd->device, "SMID: 0x%x\n",
4932 cmd_fusion->index);
4933 megasas_dump_fusion_io(cmd_fusion->scmd);
4934 }
4935
4936 if (cmd_fusion->io_request->Function ==
4937 MPI2_FUNCTION_SCSI_IO_REQUEST)
4938 fpio_count++;
4939
4940 scmd_local->result =
4941 megasas_check_mpio_paths(instance,
4942 scmd_local);
4943 if (instance->ldio_threshold &&
4944 megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)
4945 atomic_dec(&instance->ldio_outstanding);
4946 megasas_return_cmd_fusion(instance, cmd_fusion);
4947 scsi_dma_unmap(scmd_local);
4948 scmd_local->scsi_done(scmd_local);
4949 }
4950 }
4951
4952 dev_info(&instance->pdev->dev, "Outstanding fastpath IOs: %d\n",
4953 fpio_count);
4954
4955 atomic_set(&instance->fw_outstanding, 0);
4956
4957 status_reg = instance->instancet->read_fw_status_reg(instance);
4958 abs_state = status_reg & MFI_STATE_MASK;
4959 reset_adapter = status_reg & MFI_RESET_ADAPTER;
4960 if (instance->disableOnlineCtrlReset ||
4961 (abs_state == MFI_STATE_FAULT && !reset_adapter)) {
4962 /* Reset not supported, kill adapter */
4963 dev_warn(&instance->pdev->dev, "Reset not supported"
4964 ", killing adapter scsi%d.\n",
4965 instance->host->host_no);
4966 goto kill_hba;
4967 }
4968
4969 /* Let SR-IOV VF & PF sync up if there was a HB failure */
4970 if (instance->requestorId && !reason) {
4971 msleep(MEGASAS_OCR_SETTLE_TIME_VF);
4972 do_adp_reset = false;
4973 max_reset_tries = MEGASAS_SRIOV_MAX_RESET_TRIES_VF;
4974 }
4975
4976 /* Now try to reset the chip */
4977 for (i = 0; i < max_reset_tries; i++) {
4978 /*
4979 * Do adp reset and wait for
4980 * controller to transition to ready
4981 */
4982 if (megasas_adp_reset_wait_for_ready(instance,
4983 do_adp_reset, 1) == FAILED)
4984 continue;
4985
4986 /* Wait for FW to become ready */
4987 if (megasas_transition_to_ready(instance, 1)) {
4988 dev_warn(&instance->pdev->dev,
4989 "Failed to transition controller to ready for "
4990 "scsi%d.\n", instance->host->host_no);
4991 continue;
4992 }
4993 megasas_reset_reply_desc(instance);
4994 megasas_fusion_update_can_queue(instance, OCR_CONTEXT);
4995
4996 if (megasas_ioc_init_fusion(instance)) {
4997 continue;
4998 }
4999
5000 if (megasas_get_ctrl_info(instance)) {
5001 dev_info(&instance->pdev->dev,
5002 "Failed from %s %d\n",
5003 __func__, __LINE__);
5004 goto kill_hba;
5005 }
5006
5007 megasas_refire_mgmt_cmd(instance,
5008 (i == (MEGASAS_FUSION_MAX_RESET_TRIES - 1)
5009 ? 1 : 0));
5010
5011 /* Reset load balance info */
5012 if (fusion->load_balance_info)
5013 memset(fusion->load_balance_info, 0,
5014 (sizeof(struct LD_LOAD_BALANCE_INFO) *
5015 MAX_LOGICAL_DRIVES_EXT));
5016
5017 if (!megasas_get_map_info(instance)) {
5018 megasas_sync_map_info(instance);
5019 } else {
5020 /*
5021 * Return pending polled mode cmds before
5022 * retrying OCR
5023 */
5024 megasas_return_polled_cmds(instance);
5025 continue;
5026 }
5027
5028 megasas_setup_jbod_map(instance);
5029
5030 /* reset stream detection array */
5031 if (instance->adapter_type >= VENTURA_SERIES) {
5032 for (j = 0; j < MAX_LOGICAL_DRIVES_EXT; ++j) {
5033 memset(fusion->stream_detect_by_ld[j],
5034 0, sizeof(struct LD_STREAM_DETECT));
5035 fusion->stream_detect_by_ld[j]->mru_bit_map
5036 = MR_STREAM_BITMAP;
5037 }
5038 }
5039
5040 clear_bit(MEGASAS_FUSION_IN_RESET,
5041 &instance->reset_flags);
5042 instance->instancet->enable_intr(instance);
5043 megasas_enable_irq_poll(instance);
5044 shost_for_each_device(sdev, shost) {
5045 if ((instance->tgt_prop) &&
5046 (instance->nvme_page_size))
5047 ret_target_prop = megasas_get_target_prop(instance, sdev);
5048
5049 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
5050 megasas_set_dynamic_target_properties(sdev, is_target_prop);
5051 }
5052
5053 status_reg = instance->instancet->read_fw_status_reg
5054 (instance);
5055 abs_state = status_reg & MFI_STATE_MASK;
5056 if (abs_state != MFI_STATE_OPERATIONAL) {
5057 dev_info(&instance->pdev->dev,
5058 "Adapter is not OPERATIONAL, state 0x%x for scsi:%d\n",
5059 abs_state, instance->host->host_no);
5060 goto out;
5061 }
5062 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
5063
5064 dev_info(&instance->pdev->dev,
5065 "Adapter is OPERATIONAL for scsi:%d\n",
5066 instance->host->host_no);
5067
5068 /* Restart SR-IOV heartbeat */
5069 if (instance->requestorId) {
5070 if (!megasas_sriov_start_heartbeat(instance, 0))
5071 megasas_start_timer(instance);
5072 else
5073 instance->skip_heartbeat_timer_del = 1;
5074 }
5075
5076 if (instance->crash_dump_drv_support &&
5077 instance->crash_dump_app_support)
5078 megasas_set_crash_dump_params(instance,
5079 MR_CRASH_BUF_TURN_ON);
5080 else
5081 megasas_set_crash_dump_params(instance,
5082 MR_CRASH_BUF_TURN_OFF);
5083
5084 if (instance->snapdump_wait_time) {
5085 megasas_get_snapdump_properties(instance);
5086 dev_info(&instance->pdev->dev,
5087 "Snap dump wait time\t: %d\n",
5088 instance->snapdump_wait_time);
5089 }
5090
5091 retval = SUCCESS;
5092
5093 /* Adapter reset completed successfully */
5094 dev_warn(&instance->pdev->dev,
5095 "Reset successful for scsi%d.\n",
5096 instance->host->host_no);
5097
5098 goto out;
5099 }
5100 /* Reset failed, kill the adapter */
5101 dev_warn(&instance->pdev->dev, "Reset failed, killing "
5102 "adapter scsi%d.\n", instance->host->host_no);
5103 goto kill_hba;
5104 } else {
5105 /* For VF: Restart HB timer if we didn't OCR */
5106 if (instance->requestorId) {
5107 megasas_start_timer(instance);
5108 }
5109 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
5110 instance->instancet->enable_intr(instance);
5111 megasas_enable_irq_poll(instance);
5112 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
5113 goto out;
5114 }
5115 kill_hba:
5116 megaraid_sas_kill_hba(instance);
5117 megasas_enable_irq_poll(instance);
5118 instance->skip_heartbeat_timer_del = 1;
5119 retval = FAILED;
5120 out:
5121 clear_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE, &instance->reset_flags);
5122 mutex_unlock(&instance->reset_mutex);
5123 return retval;
5124 }
5125
5126 /* Fusion Crash dump collection */
5127 static void megasas_fusion_crash_dump(struct megasas_instance *instance)
5128 {
5129 u32 status_reg;
5130 u8 partial_copy = 0;
5131 int wait = 0;
5132
5133
5134 status_reg = instance->instancet->read_fw_status_reg(instance);
5135
5136 /*
5137 * Allocate host crash buffers to copy data from 1 MB DMA crash buffer
5138 * to host crash buffers
5139 */
5140 if (instance->drv_buf_index == 0) {
5141 /* Buffer is already allocated for old Crash dump.
5142 * Do OCR and do not wait for crash dump collection
5143 */
5144 if (instance->drv_buf_alloc) {
5145 dev_info(&instance->pdev->dev, "earlier crash dump is "
5146 "not yet copied by application, ignoring this "
5147 "crash dump and initiating OCR\n");
5148 status_reg |= MFI_STATE_CRASH_DUMP_DONE;
5149 writel(status_reg,
5150 &instance->reg_set->outbound_scratch_pad_0);
5151 readl(&instance->reg_set->outbound_scratch_pad_0);
5152 return;
5153 }
5154 megasas_alloc_host_crash_buffer(instance);
5155 dev_info(&instance->pdev->dev, "Number of host crash buffers "
5156 "allocated: %d\n", instance->drv_buf_alloc);
5157 }
5158
5159 while (!(status_reg & MFI_STATE_CRASH_DUMP_DONE) &&
5160 (wait < MEGASAS_WATCHDOG_WAIT_COUNT)) {
5161 if (!(status_reg & MFI_STATE_DMADONE)) {
5162 /*
5163 * Next crash dump buffer is not yet DMA'd by FW
5164 * Check after 10ms. Wait for 1 second for FW to
5165 * post the next buffer. If not bail out.
5166 */
5167 wait++;
5168 msleep(MEGASAS_WAIT_FOR_NEXT_DMA_MSECS);
5169 status_reg = instance->instancet->read_fw_status_reg(
5170 instance);
5171 continue;
5172 }
5173
5174 wait = 0;
5175 if (instance->drv_buf_index >= instance->drv_buf_alloc) {
5176 dev_info(&instance->pdev->dev,
5177 "Driver is done copying the buffer: %d\n",
5178 instance->drv_buf_alloc);
5179 status_reg |= MFI_STATE_CRASH_DUMP_DONE;
5180 partial_copy = 1;
5181 break;
5182 } else {
5183 memcpy(instance->crash_buf[instance->drv_buf_index],
5184 instance->crash_dump_buf, CRASH_DMA_BUF_SIZE);
5185 instance->drv_buf_index++;
5186 status_reg &= ~MFI_STATE_DMADONE;
5187 }
5188
5189 writel(status_reg, &instance->reg_set->outbound_scratch_pad_0);
5190 readl(&instance->reg_set->outbound_scratch_pad_0);
5191
5192 msleep(MEGASAS_WAIT_FOR_NEXT_DMA_MSECS);
5193 status_reg = instance->instancet->read_fw_status_reg(instance);
5194 }
5195
5196 if (status_reg & MFI_STATE_CRASH_DUMP_DONE) {
5197 dev_info(&instance->pdev->dev, "Crash Dump is available,number "
5198 "of copied buffers: %d\n", instance->drv_buf_index);
5199 instance->fw_crash_buffer_size = instance->drv_buf_index;
5200 instance->fw_crash_state = AVAILABLE;
5201 instance->drv_buf_index = 0;
5202 writel(status_reg, &instance->reg_set->outbound_scratch_pad_0);
5203 readl(&instance->reg_set->outbound_scratch_pad_0);
5204 if (!partial_copy)
5205 megasas_reset_fusion(instance->host, 0);
5206 }
5207 }
5208
5209
5210 /* Fusion OCR work queue */
5211 void megasas_fusion_ocr_wq(struct work_struct *work)
5212 {
5213 struct megasas_instance *instance =
5214 container_of(work, struct megasas_instance, work_init);
5215
5216 megasas_reset_fusion(instance->host, 0);
5217 }
5218
5219 /* Allocate fusion context */
5220 int
5221 megasas_alloc_fusion_context(struct megasas_instance *instance)
5222 {
5223 struct fusion_context *fusion;
5224
5225 instance->ctrl_context = kzalloc(sizeof(struct fusion_context),
5226 GFP_KERNEL);
5227 if (!instance->ctrl_context) {
5228 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
5229 __func__, __LINE__);
5230 return -ENOMEM;
5231 }
5232
5233 fusion = instance->ctrl_context;
5234
5235 fusion->log_to_span_pages = get_order(MAX_LOGICAL_DRIVES_EXT *
5236 sizeof(LD_SPAN_INFO));
5237 fusion->log_to_span =
5238 (PLD_SPAN_INFO)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
5239 fusion->log_to_span_pages);
5240 if (!fusion->log_to_span) {
5241 fusion->log_to_span =
5242 vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT,
5243 sizeof(LD_SPAN_INFO)));
5244 if (!fusion->log_to_span) {
5245 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
5246 __func__, __LINE__);
5247 return -ENOMEM;
5248 }
5249 }
5250
5251 fusion->load_balance_info_pages = get_order(MAX_LOGICAL_DRIVES_EXT *
5252 sizeof(struct LD_LOAD_BALANCE_INFO));
5253 fusion->load_balance_info =
5254 (struct LD_LOAD_BALANCE_INFO *)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
5255 fusion->load_balance_info_pages);
5256 if (!fusion->load_balance_info) {
5257 fusion->load_balance_info =
5258 vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT,
5259 sizeof(struct LD_LOAD_BALANCE_INFO)));
5260 if (!fusion->load_balance_info)
5261 dev_err(&instance->pdev->dev, "Failed to allocate load_balance_info, "
5262 "continuing without Load Balance support\n");
5263 }
5264
5265 return 0;
5266 }
5267
5268 void
5269 megasas_free_fusion_context(struct megasas_instance *instance)
5270 {
5271 struct fusion_context *fusion = instance->ctrl_context;
5272
5273 if (fusion) {
5274 if (fusion->load_balance_info) {
5275 if (is_vmalloc_addr(fusion->load_balance_info))
5276 vfree(fusion->load_balance_info);
5277 else
5278 free_pages((ulong)fusion->load_balance_info,
5279 fusion->load_balance_info_pages);
5280 }
5281
5282 if (fusion->log_to_span) {
5283 if (is_vmalloc_addr(fusion->log_to_span))
5284 vfree(fusion->log_to_span);
5285 else
5286 free_pages((ulong)fusion->log_to_span,
5287 fusion->log_to_span_pages);
5288 }
5289
5290 kfree(fusion);
5291 }
5292 }
5293
5294 struct megasas_instance_template megasas_instance_template_fusion = {
5295 .enable_intr = megasas_enable_intr_fusion,
5296 .disable_intr = megasas_disable_intr_fusion,
5297 .clear_intr = megasas_clear_intr_fusion,
5298 .read_fw_status_reg = megasas_read_fw_status_reg_fusion,
5299 .adp_reset = megasas_adp_reset_fusion,
5300 .check_reset = megasas_check_reset_fusion,
5301 .service_isr = megasas_isr_fusion,
5302 .tasklet = megasas_complete_cmd_dpc_fusion,
5303 .init_adapter = megasas_init_adapter_fusion,
5304 .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion,
5305 .issue_dcmd = megasas_issue_dcmd_fusion,
5306 };
Linux with added FPC-III support