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[media] cec: move cec_report_phys_addr into cec_config_thread_func
[linux-2.6/btrfs-unstable.git] / drivers / scsi / megaraid / megaraid_sas_fusion.c
blob52d8bbf7feb5c50efe361aa2e57f30277f38a0df
1 /*
2 * Linux MegaRAID driver for SAS based RAID controllers
3 *
4 * Copyright (c) 2009-2013 LSI Corporation
5 * Copyright (c) 2013-2014 Avago Technologies
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
19 *
20 * FILE: megaraid_sas_fusion.c
21 *
22 * Authors: Avago Technologies
23 * Sumant Patro
24 * Adam Radford
25 * Kashyap Desai <kashyap.desai@avagotech.com>
26 * Sumit Saxena <sumit.saxena@avagotech.com>
27 *
28 * Send feedback to: megaraidlinux.pdl@avagotech.com
29 *
30 * Mail to: Avago Technologies, 350 West Trimble Road, Building 90,
31 * San Jose, California 95131
32 */
33
34 #include <linux/kernel.h>
35 #include <linux/types.h>
36 #include <linux/pci.h>
37 #include <linux/list.h>
38 #include <linux/moduleparam.h>
39 #include <linux/module.h>
40 #include <linux/spinlock.h>
41 #include <linux/interrupt.h>
42 #include <linux/delay.h>
43 #include <linux/uio.h>
44 #include <linux/uaccess.h>
45 #include <linux/fs.h>
46 #include <linux/compat.h>
47 #include <linux/blkdev.h>
48 #include <linux/mutex.h>
49 #include <linux/poll.h>
50
51 #include <scsi/scsi.h>
52 #include <scsi/scsi_cmnd.h>
53 #include <scsi/scsi_device.h>
54 #include <scsi/scsi_host.h>
55 #include <scsi/scsi_dbg.h>
56 #include <linux/dmi.h>
57
58 #include "megaraid_sas_fusion.h"
59 #include "megaraid_sas.h"
60
61
62 extern void megasas_free_cmds(struct megasas_instance *instance);
63 extern struct megasas_cmd *megasas_get_cmd(struct megasas_instance
64 *instance);
65 extern void
66 megasas_complete_cmd(struct megasas_instance *instance,
67 struct megasas_cmd *cmd, u8 alt_status);
68 int
69 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
70 int seconds);
71
72 void
73 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd);
74 int megasas_alloc_cmds(struct megasas_instance *instance);
75 int
76 megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs);
77 int
78 megasas_issue_polled(struct megasas_instance *instance,
79 struct megasas_cmd *cmd);
80 void
81 megasas_check_and_restore_queue_depth(struct megasas_instance *instance);
82
83 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
84 void megaraid_sas_kill_hba(struct megasas_instance *instance);
85
86 extern u32 megasas_dbg_lvl;
87 void megasas_sriov_heartbeat_handler(unsigned long instance_addr);
88 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
89 int initial);
90 void megasas_start_timer(struct megasas_instance *instance,
91 struct timer_list *timer,
92 void *fn, unsigned long interval);
93 extern struct megasas_mgmt_info megasas_mgmt_info;
94 extern unsigned int resetwaittime;
95 extern unsigned int dual_qdepth_disable;
96 static void megasas_free_rdpq_fusion(struct megasas_instance *instance);
97 static void megasas_free_reply_fusion(struct megasas_instance *instance);
98
99
100
101 /**
102 * megasas_enable_intr_fusion - Enables interrupts
103 * @regs: MFI register set
104 */
105 void
106 megasas_enable_intr_fusion(struct megasas_instance *instance)
107 {
108 struct megasas_register_set __iomem *regs;
109 regs = instance->reg_set;
110
111 instance->mask_interrupts = 0;
112 /* For Thunderbolt/Invader also clear intr on enable */
113 writel(~0, &regs->outbound_intr_status);
114 readl(&regs->outbound_intr_status);
115
116 writel(~MFI_FUSION_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
117
118 /* Dummy readl to force pci flush */
119 readl(&regs->outbound_intr_mask);
120 }
121
122 /**
123 * megasas_disable_intr_fusion - Disables interrupt
124 * @regs: MFI register set
125 */
126 void
127 megasas_disable_intr_fusion(struct megasas_instance *instance)
128 {
129 u32 mask = 0xFFFFFFFF;
130 u32 status;
131 struct megasas_register_set __iomem *regs;
132 regs = instance->reg_set;
133 instance->mask_interrupts = 1;
134
135 writel(mask, &regs->outbound_intr_mask);
136 /* Dummy readl to force pci flush */
137 status = readl(&regs->outbound_intr_mask);
138 }
139
140 int
141 megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs)
142 {
143 u32 status;
144 /*
145 * Check if it is our interrupt
146 */
147 status = readl(&regs->outbound_intr_status);
148
149 if (status & 1) {
150 writel(status, &regs->outbound_intr_status);
151 readl(&regs->outbound_intr_status);
152 return 1;
153 }
154 if (!(status & MFI_FUSION_ENABLE_INTERRUPT_MASK))
155 return 0;
156
157 return 1;
158 }
159
160 /**
161 * megasas_get_cmd_fusion - Get a command from the free pool
162 * @instance: Adapter soft state
163 *
164 * Returns a blk_tag indexed mpt frame
165 */
166 inline struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance
167 *instance, u32 blk_tag)
168 {
169 struct fusion_context *fusion;
170
171 fusion = instance->ctrl_context;
172 return fusion->cmd_list[blk_tag];
173 }
174
175 /**
176 * megasas_return_cmd_fusion - Return a cmd to free command pool
177 * @instance: Adapter soft state
178 * @cmd: Command packet to be returned to free command pool
179 */
180 inline void megasas_return_cmd_fusion(struct megasas_instance *instance,
181 struct megasas_cmd_fusion *cmd)
182 {
183 cmd->scmd = NULL;
184 memset(cmd->io_request, 0, sizeof(struct MPI2_RAID_SCSI_IO_REQUEST));
185 }
186
187 /**
188 * megasas_fire_cmd_fusion - Sends command to the FW
189 */
190 static void
191 megasas_fire_cmd_fusion(struct megasas_instance *instance,
192 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc)
193 {
194 #if defined(writeq) && defined(CONFIG_64BIT)
195 u64 req_data = (((u64)le32_to_cpu(req_desc->u.high) << 32) |
196 le32_to_cpu(req_desc->u.low));
197
198 writeq(req_data, &instance->reg_set->inbound_low_queue_port);
199 #else
200 unsigned long flags;
201
202 spin_lock_irqsave(&instance->hba_lock, flags);
203 writel(le32_to_cpu(req_desc->u.low),
204 &instance->reg_set->inbound_low_queue_port);
205 writel(le32_to_cpu(req_desc->u.high),
206 &instance->reg_set->inbound_high_queue_port);
207 mmiowb();
208 spin_unlock_irqrestore(&instance->hba_lock, flags);
209 #endif
210 }
211
212 /**
213 * megasas_fusion_update_can_queue - Do all Adapter Queue depth related calculations here
214 * @instance: Adapter soft state
215 * fw_boot_context: Whether this function called during probe or after OCR
216 *
217 * This function is only for fusion controllers.
218 * Update host can queue, if firmware downgrade max supported firmware commands.
219 * Firmware upgrade case will be skiped because underlying firmware has
220 * more resource than exposed to the OS.
221 *
222 */
223 static void
224 megasas_fusion_update_can_queue(struct megasas_instance *instance, int fw_boot_context)
225 {
226 u16 cur_max_fw_cmds = 0;
227 u16 ldio_threshold = 0;
228 struct megasas_register_set __iomem *reg_set;
229
230 reg_set = instance->reg_set;
231
232 cur_max_fw_cmds = readl(&instance->reg_set->outbound_scratch_pad_3) & 0x00FFFF;
233
234 if (dual_qdepth_disable || !cur_max_fw_cmds)
235 cur_max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
236 else
237 ldio_threshold =
238 (instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF) - MEGASAS_FUSION_IOCTL_CMDS;
239
240 dev_info(&instance->pdev->dev,
241 "Current firmware maximum commands: %d\t LDIO threshold: %d\n",
242 cur_max_fw_cmds, ldio_threshold);
243
244 if (fw_boot_context == OCR_CONTEXT) {
245 cur_max_fw_cmds = cur_max_fw_cmds - 1;
246 if (cur_max_fw_cmds <= instance->max_fw_cmds) {
247 instance->cur_can_queue =
248 cur_max_fw_cmds - (MEGASAS_FUSION_INTERNAL_CMDS +
249 MEGASAS_FUSION_IOCTL_CMDS);
250 instance->host->can_queue = instance->cur_can_queue;
251 instance->ldio_threshold = ldio_threshold;
252 }
253 } else {
254 instance->max_fw_cmds = cur_max_fw_cmds;
255 instance->ldio_threshold = ldio_threshold;
256
257 if (!instance->is_rdpq)
258 instance->max_fw_cmds = min_t(u16, instance->max_fw_cmds, 1024);
259
260 if (reset_devices)
261 instance->max_fw_cmds = min(instance->max_fw_cmds,
262 (u16)MEGASAS_KDUMP_QUEUE_DEPTH);
263 /*
264 * Reduce the max supported cmds by 1. This is to ensure that the
265 * reply_q_sz (1 more than the max cmd that driver may send)
266 * does not exceed max cmds that the FW can support
267 */
268 instance->max_fw_cmds = instance->max_fw_cmds-1;
269
270 instance->max_scsi_cmds = instance->max_fw_cmds -
271 (MEGASAS_FUSION_INTERNAL_CMDS +
272 MEGASAS_FUSION_IOCTL_CMDS);
273 instance->cur_can_queue = instance->max_scsi_cmds;
274 }
275 }
276 /**
277 * megasas_free_cmds_fusion - Free all the cmds in the free cmd pool
278 * @instance: Adapter soft state
279 */
280 void
281 megasas_free_cmds_fusion(struct megasas_instance *instance)
282 {
283 int i;
284 struct fusion_context *fusion = instance->ctrl_context;
285 struct megasas_cmd_fusion *cmd;
286
287 /* SG, Sense */
288 for (i = 0; i < instance->max_fw_cmds; i++) {
289 cmd = fusion->cmd_list[i];
290 if (cmd) {
291 if (cmd->sg_frame)
292 pci_pool_free(fusion->sg_dma_pool, cmd->sg_frame,
293 cmd->sg_frame_phys_addr);
294 if (cmd->sense)
295 pci_pool_free(fusion->sense_dma_pool, cmd->sense,
296 cmd->sense_phys_addr);
297 }
298 }
299
300 if (fusion->sg_dma_pool) {
301 pci_pool_destroy(fusion->sg_dma_pool);
302 fusion->sg_dma_pool = NULL;
303 }
304 if (fusion->sense_dma_pool) {
305 pci_pool_destroy(fusion->sense_dma_pool);
306 fusion->sense_dma_pool = NULL;
307 }
308
309
310 /* Reply Frame, Desc*/
311 if (instance->is_rdpq)
312 megasas_free_rdpq_fusion(instance);
313 else
314 megasas_free_reply_fusion(instance);
315
316 /* Request Frame, Desc*/
317 if (fusion->req_frames_desc)
318 dma_free_coherent(&instance->pdev->dev,
319 fusion->request_alloc_sz, fusion->req_frames_desc,
320 fusion->req_frames_desc_phys);
321 if (fusion->io_request_frames)
322 pci_pool_free(fusion->io_request_frames_pool,
323 fusion->io_request_frames,
324 fusion->io_request_frames_phys);
325 if (fusion->io_request_frames_pool) {
326 pci_pool_destroy(fusion->io_request_frames_pool);
327 fusion->io_request_frames_pool = NULL;
328 }
329
330
331 /* cmd_list */
332 for (i = 0; i < instance->max_fw_cmds; i++)
333 kfree(fusion->cmd_list[i]);
334
335 kfree(fusion->cmd_list);
336 }
337
338 /**
339 * megasas_create_sg_sense_fusion - Creates DMA pool for cmd frames
340 * @instance: Adapter soft state
341 *
342 */
343 static int megasas_create_sg_sense_fusion(struct megasas_instance *instance)
344 {
345 int i;
346 u32 max_cmd;
347 struct fusion_context *fusion;
348 struct megasas_cmd_fusion *cmd;
349
350 fusion = instance->ctrl_context;
351 max_cmd = instance->max_fw_cmds;
352
353
354 fusion->sg_dma_pool =
355 pci_pool_create("mr_sg", instance->pdev,
356 instance->max_chain_frame_sz, 4, 0);
357 /* SCSI_SENSE_BUFFERSIZE = 96 bytes */
358 fusion->sense_dma_pool =
359 pci_pool_create("mr_sense", instance->pdev,
360 SCSI_SENSE_BUFFERSIZE, 64, 0);
361
362 if (!fusion->sense_dma_pool || !fusion->sg_dma_pool) {
363 dev_err(&instance->pdev->dev,
364 "Failed from %s %d\n", __func__, __LINE__);
365 return -ENOMEM;
366 }
367
368 /*
369 * Allocate and attach a frame to each of the commands in cmd_list
370 */
371 for (i = 0; i < max_cmd; i++) {
372 cmd = fusion->cmd_list[i];
373 cmd->sg_frame = pci_pool_alloc(fusion->sg_dma_pool,
374 GFP_KERNEL, &cmd->sg_frame_phys_addr);
375
376 cmd->sense = pci_pool_alloc(fusion->sense_dma_pool,
377 GFP_KERNEL, &cmd->sense_phys_addr);
378 if (!cmd->sg_frame || !cmd->sense) {
379 dev_err(&instance->pdev->dev,
380 "Failed from %s %d\n", __func__, __LINE__);
381 return -ENOMEM;
382 }
383 }
384 return 0;
385 }
386
387 int
388 megasas_alloc_cmdlist_fusion(struct megasas_instance *instance)
389 {
390 u32 max_cmd, i;
391 struct fusion_context *fusion;
392
393 fusion = instance->ctrl_context;
394
395 max_cmd = instance->max_fw_cmds;
396
397 /*
398 * fusion->cmd_list is an array of struct megasas_cmd_fusion pointers.
399 * Allocate the dynamic array first and then allocate individual
400 * commands.
401 */
402 fusion->cmd_list = kzalloc(sizeof(struct megasas_cmd_fusion *) * max_cmd,
403 GFP_KERNEL);
404 if (!fusion->cmd_list) {
405 dev_err(&instance->pdev->dev,
406 "Failed from %s %d\n", __func__, __LINE__);
407 return -ENOMEM;
408 }
409
410 for (i = 0; i < max_cmd; i++) {
411 fusion->cmd_list[i] = kzalloc(sizeof(struct megasas_cmd_fusion),
412 GFP_KERNEL);
413 if (!fusion->cmd_list[i]) {
414 dev_err(&instance->pdev->dev,
415 "Failed from %s %d\n", __func__, __LINE__);
416 return -ENOMEM;
417 }
418 }
419 return 0;
420 }
421 int
422 megasas_alloc_request_fusion(struct megasas_instance *instance)
423 {
424 struct fusion_context *fusion;
425
426 fusion = instance->ctrl_context;
427
428 fusion->req_frames_desc =
429 dma_alloc_coherent(&instance->pdev->dev,
430 fusion->request_alloc_sz,
431 &fusion->req_frames_desc_phys, GFP_KERNEL);
432 if (!fusion->req_frames_desc) {
433 dev_err(&instance->pdev->dev,
434 "Failed from %s %d\n", __func__, __LINE__);
435 return -ENOMEM;
436 }
437
438 fusion->io_request_frames_pool =
439 pci_pool_create("mr_ioreq", instance->pdev,
440 fusion->io_frames_alloc_sz, 16, 0);
441
442 if (!fusion->io_request_frames_pool) {
443 dev_err(&instance->pdev->dev,
444 "Failed from %s %d\n", __func__, __LINE__);
445 return -ENOMEM;
446 }
447
448 fusion->io_request_frames =
449 pci_pool_alloc(fusion->io_request_frames_pool,
450 GFP_KERNEL, &fusion->io_request_frames_phys);
451 if (!fusion->io_request_frames) {
452 dev_err(&instance->pdev->dev,
453 "Failed from %s %d\n", __func__, __LINE__);
454 return -ENOMEM;
455 }
456 return 0;
457 }
458
459 int
460 megasas_alloc_reply_fusion(struct megasas_instance *instance)
461 {
462 int i, count;
463 struct fusion_context *fusion;
464 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
465 fusion = instance->ctrl_context;
466
467 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
468 fusion->reply_frames_desc_pool =
469 pci_pool_create("mr_reply", instance->pdev,
470 fusion->reply_alloc_sz * count, 16, 0);
471
472 if (!fusion->reply_frames_desc_pool) {
473 dev_err(&instance->pdev->dev,
474 "Failed from %s %d\n", __func__, __LINE__);
475 return -ENOMEM;
476 }
477
478 fusion->reply_frames_desc[0] =
479 pci_pool_alloc(fusion->reply_frames_desc_pool,
480 GFP_KERNEL, &fusion->reply_frames_desc_phys[0]);
481 if (!fusion->reply_frames_desc[0]) {
482 dev_err(&instance->pdev->dev,
483 "Failed from %s %d\n", __func__, __LINE__);
484 return -ENOMEM;
485 }
486 reply_desc = fusion->reply_frames_desc[0];
487 for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++)
488 reply_desc->Words = cpu_to_le64(ULLONG_MAX);
489
490 /* This is not a rdpq mode, but driver still populate
491 * reply_frame_desc array to use same msix index in ISR path.
492 */
493 for (i = 0; i < (count - 1); i++)
494 fusion->reply_frames_desc[i + 1] =
495 fusion->reply_frames_desc[i] +
496 (fusion->reply_alloc_sz)/sizeof(union MPI2_REPLY_DESCRIPTORS_UNION);
497
498 return 0;
499 }
500
501 int
502 megasas_alloc_rdpq_fusion(struct megasas_instance *instance)
503 {
504 int i, j, count;
505 struct fusion_context *fusion;
506 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
507
508 fusion = instance->ctrl_context;
509
510 fusion->rdpq_virt = pci_alloc_consistent(instance->pdev,
511 sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * MAX_MSIX_QUEUES_FUSION,
512 &fusion->rdpq_phys);
513 if (!fusion->rdpq_virt) {
514 dev_err(&instance->pdev->dev,
515 "Failed from %s %d\n", __func__, __LINE__);
516 return -ENOMEM;
517 }
518
519 memset(fusion->rdpq_virt, 0,
520 sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * MAX_MSIX_QUEUES_FUSION);
521 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
522 fusion->reply_frames_desc_pool = pci_pool_create("mr_rdpq",
523 instance->pdev, fusion->reply_alloc_sz, 16, 0);
524
525 if (!fusion->reply_frames_desc_pool) {
526 dev_err(&instance->pdev->dev,
527 "Failed from %s %d\n", __func__, __LINE__);
528 return -ENOMEM;
529 }
530
531 for (i = 0; i < count; i++) {
532 fusion->reply_frames_desc[i] =
533 pci_pool_alloc(fusion->reply_frames_desc_pool,
534 GFP_KERNEL, &fusion->reply_frames_desc_phys[i]);
535 if (!fusion->reply_frames_desc[i]) {
536 dev_err(&instance->pdev->dev,
537 "Failed from %s %d\n", __func__, __LINE__);
538 return -ENOMEM;
539 }
540
541 fusion->rdpq_virt[i].RDPQBaseAddress =
542 fusion->reply_frames_desc_phys[i];
543
544 reply_desc = fusion->reply_frames_desc[i];
545 for (j = 0; j < fusion->reply_q_depth; j++, reply_desc++)
546 reply_desc->Words = cpu_to_le64(ULLONG_MAX);
547 }
548 return 0;
549 }
550
551 static void
552 megasas_free_rdpq_fusion(struct megasas_instance *instance) {
553
554 int i;
555 struct fusion_context *fusion;
556
557 fusion = instance->ctrl_context;
558
559 for (i = 0; i < MAX_MSIX_QUEUES_FUSION; i++) {
560 if (fusion->reply_frames_desc[i])
561 pci_pool_free(fusion->reply_frames_desc_pool,
562 fusion->reply_frames_desc[i],
563 fusion->reply_frames_desc_phys[i]);
564 }
565
566 if (fusion->reply_frames_desc_pool)
567 pci_pool_destroy(fusion->reply_frames_desc_pool);
568
569 if (fusion->rdpq_virt)
570 pci_free_consistent(instance->pdev,
571 sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * MAX_MSIX_QUEUES_FUSION,
572 fusion->rdpq_virt, fusion->rdpq_phys);
573 }
574
575 static void
576 megasas_free_reply_fusion(struct megasas_instance *instance) {
577
578 struct fusion_context *fusion;
579
580 fusion = instance->ctrl_context;
581
582 if (fusion->reply_frames_desc[0])
583 pci_pool_free(fusion->reply_frames_desc_pool,
584 fusion->reply_frames_desc[0],
585 fusion->reply_frames_desc_phys[0]);
586
587 if (fusion->reply_frames_desc_pool)
588 pci_pool_destroy(fusion->reply_frames_desc_pool);
589
590 }
591
592
593 /**
594 * megasas_alloc_cmds_fusion - Allocates the command packets
595 * @instance: Adapter soft state
596 *
597 *
598 * Each frame has a 32-bit field called context. This context is used to get
599 * back the megasas_cmd_fusion from the frame when a frame gets completed
600 * In this driver, the 32 bit values are the indices into an array cmd_list.
601 * This array is used only to look up the megasas_cmd_fusion given the context.
602 * The free commands themselves are maintained in a linked list called cmd_pool.
603 *
604 * cmds are formed in the io_request and sg_frame members of the
605 * megasas_cmd_fusion. The context field is used to get a request descriptor
606 * and is used as SMID of the cmd.
607 * SMID value range is from 1 to max_fw_cmds.
608 */
609 int
610 megasas_alloc_cmds_fusion(struct megasas_instance *instance)
611 {
612 int i;
613 struct fusion_context *fusion;
614 struct megasas_cmd_fusion *cmd;
615 u32 offset;
616 dma_addr_t io_req_base_phys;
617 u8 *io_req_base;
618
619
620 fusion = instance->ctrl_context;
621
622 if (megasas_alloc_cmdlist_fusion(instance))
623 goto fail_exit;
624
625 if (megasas_alloc_request_fusion(instance))
626 goto fail_exit;
627
628 if (instance->is_rdpq) {
629 if (megasas_alloc_rdpq_fusion(instance))
630 goto fail_exit;
631 } else
632 if (megasas_alloc_reply_fusion(instance))
633 goto fail_exit;
634
635
636 /* The first 256 bytes (SMID 0) is not used. Don't add to the cmd list */
637 io_req_base = fusion->io_request_frames + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
638 io_req_base_phys = fusion->io_request_frames_phys + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
639
640 /*
641 * Add all the commands to command pool (fusion->cmd_pool)
642 */
643
644 /* SMID 0 is reserved. Set SMID/index from 1 */
645 for (i = 0; i < instance->max_fw_cmds; i++) {
646 cmd = fusion->cmd_list[i];
647 offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i;
648 memset(cmd, 0, sizeof(struct megasas_cmd_fusion));
649 cmd->index = i + 1;
650 cmd->scmd = NULL;
651 cmd->sync_cmd_idx = (i >= instance->max_scsi_cmds) ?
652 (i - instance->max_scsi_cmds) :
653 (u32)ULONG_MAX; /* Set to Invalid */
654 cmd->instance = instance;
655 cmd->io_request =
656 (struct MPI2_RAID_SCSI_IO_REQUEST *)
657 (io_req_base + offset);
658 memset(cmd->io_request, 0,
659 sizeof(struct MPI2_RAID_SCSI_IO_REQUEST));
660 cmd->io_request_phys_addr = io_req_base_phys + offset;
661 }
662
663 if (megasas_create_sg_sense_fusion(instance))
664 goto fail_exit;
665
666 return 0;
667
668 fail_exit:
669 megasas_free_cmds_fusion(instance);
670 return -ENOMEM;
671 }
672
673 /**
674 * wait_and_poll - Issues a polling command
675 * @instance: Adapter soft state
676 * @cmd: Command packet to be issued
677 *
678 * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
679 */
680 int
681 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
682 int seconds)
683 {
684 int i;
685 struct megasas_header *frame_hdr = &cmd->frame->hdr;
686 struct fusion_context *fusion;
687
688 u32 msecs = seconds * 1000;
689
690 fusion = instance->ctrl_context;
691 /*
692 * Wait for cmd_status to change
693 */
694 for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) {
695 rmb();
696 msleep(20);
697 }
698
699 if (frame_hdr->cmd_status == MFI_STAT_INVALID_STATUS)
700 return DCMD_TIMEOUT;
701 else if (frame_hdr->cmd_status == MFI_STAT_OK)
702 return DCMD_SUCCESS;
703 else
704 return DCMD_FAILED;
705 }
706
707 /**
708 * megasas_ioc_init_fusion - Initializes the FW
709 * @instance: Adapter soft state
710 *
711 * Issues the IOC Init cmd
712 */
713 int
714 megasas_ioc_init_fusion(struct megasas_instance *instance)
715 {
716 struct megasas_init_frame *init_frame;
717 struct MPI2_IOC_INIT_REQUEST *IOCInitMessage = NULL;
718 dma_addr_t ioc_init_handle;
719 struct megasas_cmd *cmd;
720 u8 ret, cur_rdpq_mode;
721 struct fusion_context *fusion;
722 union MEGASAS_REQUEST_DESCRIPTOR_UNION req_desc;
723 int i;
724 struct megasas_header *frame_hdr;
725 const char *sys_info;
726 MFI_CAPABILITIES *drv_ops;
727 u32 scratch_pad_2;
728
729 fusion = instance->ctrl_context;
730
731 cmd = megasas_get_cmd(instance);
732
733 if (!cmd) {
734 dev_err(&instance->pdev->dev, "Could not allocate cmd for INIT Frame\n");
735 ret = 1;
736 goto fail_get_cmd;
737 }
738
739 scratch_pad_2 = readl
740 (&instance->reg_set->outbound_scratch_pad_2);
741
742 cur_rdpq_mode = (scratch_pad_2 & MR_RDPQ_MODE_OFFSET) ? 1 : 0;
743
744 if (instance->is_rdpq && !cur_rdpq_mode) {
745 dev_err(&instance->pdev->dev, "Firmware downgrade *NOT SUPPORTED*"
746 " from RDPQ mode to non RDPQ mode\n");
747 ret = 1;
748 goto fail_fw_init;
749 }
750
751 IOCInitMessage =
752 dma_alloc_coherent(&instance->pdev->dev,
753 sizeof(struct MPI2_IOC_INIT_REQUEST),
754 &ioc_init_handle, GFP_KERNEL);
755
756 if (!IOCInitMessage) {
757 dev_err(&instance->pdev->dev, "Could not allocate memory for "
758 "IOCInitMessage\n");
759 ret = 1;
760 goto fail_fw_init;
761 }
762
763 memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST));
764
765 IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT;
766 IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER;
767 IOCInitMessage->MsgVersion = cpu_to_le16(MPI2_VERSION);
768 IOCInitMessage->HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION);
769 IOCInitMessage->SystemRequestFrameSize = cpu_to_le16(MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4);
770
771 IOCInitMessage->ReplyDescriptorPostQueueDepth = cpu_to_le16(fusion->reply_q_depth);
772 IOCInitMessage->ReplyDescriptorPostQueueAddress = instance->is_rdpq ?
773 cpu_to_le64(fusion->rdpq_phys) :
774 cpu_to_le64(fusion->reply_frames_desc_phys[0]);
775 IOCInitMessage->MsgFlags = instance->is_rdpq ?
776 MPI2_IOCINIT_MSGFLAG_RDPQ_ARRAY_MODE : 0;
777 IOCInitMessage->SystemRequestFrameBaseAddress = cpu_to_le64(fusion->io_request_frames_phys);
778 IOCInitMessage->HostMSIxVectors = instance->msix_vectors;
779 init_frame = (struct megasas_init_frame *)cmd->frame;
780 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
781
782 frame_hdr = &cmd->frame->hdr;
783 frame_hdr->cmd_status = 0xFF;
784 frame_hdr->flags = cpu_to_le16(
785 le16_to_cpu(frame_hdr->flags) |
786 MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
787
788 init_frame->cmd = MFI_CMD_INIT;
789 init_frame->cmd_status = 0xFF;
790
791 drv_ops = (MFI_CAPABILITIES *) &(init_frame->driver_operations);
792
793 /* driver support Extended MSIX */
794 if (fusion->adapter_type == INVADER_SERIES)
795 drv_ops->mfi_capabilities.support_additional_msix = 1;
796 /* driver supports HA / Remote LUN over Fast Path interface */
797 drv_ops->mfi_capabilities.support_fp_remote_lun = 1;
798
799 drv_ops->mfi_capabilities.support_max_255lds = 1;
800 drv_ops->mfi_capabilities.support_ndrive_r1_lb = 1;
801 drv_ops->mfi_capabilities.security_protocol_cmds_fw = 1;
802
803 if (instance->max_chain_frame_sz > MEGASAS_CHAIN_FRAME_SZ_MIN)
804 drv_ops->mfi_capabilities.support_ext_io_size = 1;
805
806 drv_ops->mfi_capabilities.support_fp_rlbypass = 1;
807 if (!dual_qdepth_disable)
808 drv_ops->mfi_capabilities.support_ext_queue_depth = 1;
809
810 drv_ops->mfi_capabilities.support_qd_throttling = 1;
811 /* Convert capability to LE32 */
812 cpu_to_le32s((u32 *)&init_frame->driver_operations.mfi_capabilities);
813
814 sys_info = dmi_get_system_info(DMI_PRODUCT_UUID);
815 if (instance->system_info_buf && sys_info) {
816 memcpy(instance->system_info_buf->systemId, sys_info,
817 strlen(sys_info) > 64 ? 64 : strlen(sys_info));
818 instance->system_info_buf->systemIdLength =
819 strlen(sys_info) > 64 ? 64 : strlen(sys_info);
820 init_frame->system_info_lo = instance->system_info_h;
821 init_frame->system_info_hi = 0;
822 }
823
824 init_frame->queue_info_new_phys_addr_hi =
825 cpu_to_le32(upper_32_bits(ioc_init_handle));
826 init_frame->queue_info_new_phys_addr_lo =
827 cpu_to_le32(lower_32_bits(ioc_init_handle));
828 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct MPI2_IOC_INIT_REQUEST));
829
830 req_desc.u.low = cpu_to_le32(lower_32_bits(cmd->frame_phys_addr));
831 req_desc.u.high = cpu_to_le32(upper_32_bits(cmd->frame_phys_addr));
832 req_desc.MFAIo.RequestFlags =
833 (MEGASAS_REQ_DESCRIPT_FLAGS_MFA <<
834 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
835
836 /*
837 * disable the intr before firing the init frame
838 */
839 instance->instancet->disable_intr(instance);
840
841 for (i = 0; i < (10 * 1000); i += 20) {
842 if (readl(&instance->reg_set->doorbell) & 1)
843 msleep(20);
844 else
845 break;
846 }
847
848 megasas_fire_cmd_fusion(instance, &req_desc);
849
850 wait_and_poll(instance, cmd, MFI_POLL_TIMEOUT_SECS);
851
852 frame_hdr = &cmd->frame->hdr;
853 if (frame_hdr->cmd_status != 0) {
854 ret = 1;
855 goto fail_fw_init;
856 }
857 dev_info(&instance->pdev->dev, "Init cmd success\n");
858
859 ret = 0;
860
861 fail_fw_init:
862 megasas_return_cmd(instance, cmd);
863 if (IOCInitMessage)
864 dma_free_coherent(&instance->pdev->dev,
865 sizeof(struct MPI2_IOC_INIT_REQUEST),
866 IOCInitMessage, ioc_init_handle);
867 fail_get_cmd:
868 return ret;
869 }
870
871 /**
872 * megasas_sync_pd_seq_num - JBOD SEQ MAP
873 * @instance: Adapter soft state
874 * @pend: set to 1, if it is pended jbod map.
875 *
876 * Issue Jbod map to the firmware. If it is pended command,
877 * issue command and return. If it is first instance of jbod map
878 * issue and receive command.
879 */
880 int
881 megasas_sync_pd_seq_num(struct megasas_instance *instance, bool pend) {
882 int ret = 0;
883 u32 pd_seq_map_sz;
884 struct megasas_cmd *cmd;
885 struct megasas_dcmd_frame *dcmd;
886 struct fusion_context *fusion = instance->ctrl_context;
887 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
888 dma_addr_t pd_seq_h;
889
890 pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id & 1)];
891 pd_seq_h = fusion->pd_seq_phys[(instance->pd_seq_map_id & 1)];
892 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
893 (sizeof(struct MR_PD_CFG_SEQ) *
894 (MAX_PHYSICAL_DEVICES - 1));
895
896 cmd = megasas_get_cmd(instance);
897 if (!cmd) {
898 dev_err(&instance->pdev->dev,
899 "Could not get mfi cmd. Fail from %s %d\n",
900 __func__, __LINE__);
901 return -ENOMEM;
902 }
903
904 dcmd = &cmd->frame->dcmd;
905
906 memset(pd_sync, 0, pd_seq_map_sz);
907 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
908 dcmd->cmd = MFI_CMD_DCMD;
909 dcmd->cmd_status = 0xFF;
910 dcmd->sge_count = 1;
911 dcmd->timeout = 0;
912 dcmd->pad_0 = 0;
913 dcmd->data_xfer_len = cpu_to_le32(pd_seq_map_sz);
914 dcmd->opcode = cpu_to_le32(MR_DCMD_SYSTEM_PD_MAP_GET_INFO);
915 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(pd_seq_h);
916 dcmd->sgl.sge32[0].length = cpu_to_le32(pd_seq_map_sz);
917
918 if (pend) {
919 dcmd->mbox.b[0] = MEGASAS_DCMD_MBOX_PEND_FLAG;
920 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_WRITE);
921 instance->jbod_seq_cmd = cmd;
922 instance->instancet->issue_dcmd(instance, cmd);
923 return 0;
924 }
925
926 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
927
928 /* Below code is only for non pended DCMD */
929 if (instance->ctrl_context && !instance->mask_interrupts)
930 ret = megasas_issue_blocked_cmd(instance, cmd,
931 MFI_IO_TIMEOUT_SECS);
932 else
933 ret = megasas_issue_polled(instance, cmd);
934
935 if (le32_to_cpu(pd_sync->count) > MAX_PHYSICAL_DEVICES) {
936 dev_warn(&instance->pdev->dev,
937 "driver supports max %d JBOD, but FW reports %d\n",
938 MAX_PHYSICAL_DEVICES, le32_to_cpu(pd_sync->count));
939 ret = -EINVAL;
940 }
941
942 if (ret == DCMD_TIMEOUT && instance->ctrl_context)
943 megaraid_sas_kill_hba(instance);
944
945 if (ret == DCMD_SUCCESS)
946 instance->pd_seq_map_id++;
947
948 megasas_return_cmd(instance, cmd);
949 return ret;
950 }
951
952 /*
953 * megasas_get_ld_map_info - Returns FW's ld_map structure
954 * @instance: Adapter soft state
955 * @pend: Pend the command or not
956 * Issues an internal command (DCMD) to get the FW's controller PD
957 * list structure. This information is mainly used to find out SYSTEM
958 * supported by the FW.
959 * dcmd.mbox value setting for MR_DCMD_LD_MAP_GET_INFO
960 * dcmd.mbox.b[0] - number of LDs being sync'd
961 * dcmd.mbox.b[1] - 0 - complete command immediately.
962 * - 1 - pend till config change
963 * dcmd.mbox.b[2] - 0 - supports max 64 lds and uses legacy MR_FW_RAID_MAP
964 * - 1 - supports max MAX_LOGICAL_DRIVES_EXT lds and
965 * uses extended struct MR_FW_RAID_MAP_EXT
966 */
967 static int
968 megasas_get_ld_map_info(struct megasas_instance *instance)
969 {
970 int ret = 0;
971 struct megasas_cmd *cmd;
972 struct megasas_dcmd_frame *dcmd;
973 void *ci;
974 dma_addr_t ci_h = 0;
975 u32 size_map_info;
976 struct fusion_context *fusion;
977
978 cmd = megasas_get_cmd(instance);
979
980 if (!cmd) {
981 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for map info\n");
982 return -ENOMEM;
983 }
984
985 fusion = instance->ctrl_context;
986
987 if (!fusion) {
988 megasas_return_cmd(instance, cmd);
989 return -ENXIO;
990 }
991
992 dcmd = &cmd->frame->dcmd;
993
994 size_map_info = fusion->current_map_sz;
995
996 ci = (void *) fusion->ld_map[(instance->map_id & 1)];
997 ci_h = fusion->ld_map_phys[(instance->map_id & 1)];
998
999 if (!ci) {
1000 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ld_map_info\n");
1001 megasas_return_cmd(instance, cmd);
1002 return -ENOMEM;
1003 }
1004
1005 memset(ci, 0, fusion->max_map_sz);
1006 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1007 #if VD_EXT_DEBUG
1008 dev_dbg(&instance->pdev->dev,
1009 "%s sending MR_DCMD_LD_MAP_GET_INFO with size %d\n",
1010 __func__, cpu_to_le32(size_map_info));
1011 #endif
1012 dcmd->cmd = MFI_CMD_DCMD;
1013 dcmd->cmd_status = 0xFF;
1014 dcmd->sge_count = 1;
1015 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
1016 dcmd->timeout = 0;
1017 dcmd->pad_0 = 0;
1018 dcmd->data_xfer_len = cpu_to_le32(size_map_info);
1019 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
1020 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
1021 dcmd->sgl.sge32[0].length = cpu_to_le32(size_map_info);
1022
1023 if (instance->ctrl_context && !instance->mask_interrupts)
1024 ret = megasas_issue_blocked_cmd(instance, cmd,
1025 MFI_IO_TIMEOUT_SECS);
1026 else
1027 ret = megasas_issue_polled(instance, cmd);
1028
1029 if (ret == DCMD_TIMEOUT && instance->ctrl_context)
1030 megaraid_sas_kill_hba(instance);
1031
1032 megasas_return_cmd(instance, cmd);
1033
1034 return ret;
1035 }
1036
1037 u8
1038 megasas_get_map_info(struct megasas_instance *instance)
1039 {
1040 struct fusion_context *fusion = instance->ctrl_context;
1041
1042 fusion->fast_path_io = 0;
1043 if (!megasas_get_ld_map_info(instance)) {
1044 if (MR_ValidateMapInfo(instance)) {
1045 fusion->fast_path_io = 1;
1046 return 0;
1047 }
1048 }
1049 return 1;
1050 }
1051
1052 /*
1053 * megasas_sync_map_info - Returns FW's ld_map structure
1054 * @instance: Adapter soft state
1055 *
1056 * Issues an internal command (DCMD) to get the FW's controller PD
1057 * list structure. This information is mainly used to find out SYSTEM
1058 * supported by the FW.
1059 */
1060 int
1061 megasas_sync_map_info(struct megasas_instance *instance)
1062 {
1063 int ret = 0, i;
1064 struct megasas_cmd *cmd;
1065 struct megasas_dcmd_frame *dcmd;
1066 u32 size_sync_info, num_lds;
1067 struct fusion_context *fusion;
1068 struct MR_LD_TARGET_SYNC *ci = NULL;
1069 struct MR_DRV_RAID_MAP_ALL *map;
1070 struct MR_LD_RAID *raid;
1071 struct MR_LD_TARGET_SYNC *ld_sync;
1072 dma_addr_t ci_h = 0;
1073 u32 size_map_info;
1074
1075 cmd = megasas_get_cmd(instance);
1076
1077 if (!cmd) {
1078 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for sync info\n");
1079 return -ENOMEM;
1080 }
1081
1082 fusion = instance->ctrl_context;
1083
1084 if (!fusion) {
1085 megasas_return_cmd(instance, cmd);
1086 return 1;
1087 }
1088
1089 map = fusion->ld_drv_map[instance->map_id & 1];
1090
1091 num_lds = le16_to_cpu(map->raidMap.ldCount);
1092
1093 dcmd = &cmd->frame->dcmd;
1094
1095 size_sync_info = sizeof(struct MR_LD_TARGET_SYNC) *num_lds;
1096
1097 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1098
1099 ci = (struct MR_LD_TARGET_SYNC *)
1100 fusion->ld_map[(instance->map_id - 1) & 1];
1101 memset(ci, 0, fusion->max_map_sz);
1102
1103 ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1];
1104
1105 ld_sync = (struct MR_LD_TARGET_SYNC *)ci;
1106
1107 for (i = 0; i < num_lds; i++, ld_sync++) {
1108 raid = MR_LdRaidGet(i, map);
1109 ld_sync->targetId = MR_GetLDTgtId(i, map);
1110 ld_sync->seqNum = raid->seqNum;
1111 }
1112
1113 size_map_info = fusion->current_map_sz;
1114
1115 dcmd->cmd = MFI_CMD_DCMD;
1116 dcmd->cmd_status = 0xFF;
1117 dcmd->sge_count = 1;
1118 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_WRITE);
1119 dcmd->timeout = 0;
1120 dcmd->pad_0 = 0;
1121 dcmd->data_xfer_len = cpu_to_le32(size_map_info);
1122 dcmd->mbox.b[0] = num_lds;
1123 dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG;
1124 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
1125 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
1126 dcmd->sgl.sge32[0].length = cpu_to_le32(size_map_info);
1127
1128 instance->map_update_cmd = cmd;
1129
1130 instance->instancet->issue_dcmd(instance, cmd);
1131
1132 return ret;
1133 }
1134
1135 /*
1136 * meagasas_display_intel_branding - Display branding string
1137 * @instance: per adapter object
1138 *
1139 * Return nothing.
1140 */
1141 static void
1142 megasas_display_intel_branding(struct megasas_instance *instance)
1143 {
1144 if (instance->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL)
1145 return;
1146
1147 switch (instance->pdev->device) {
1148 case PCI_DEVICE_ID_LSI_INVADER:
1149 switch (instance->pdev->subsystem_device) {
1150 case MEGARAID_INTEL_RS3DC080_SSDID:
1151 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1152 instance->host->host_no,
1153 MEGARAID_INTEL_RS3DC080_BRANDING);
1154 break;
1155 case MEGARAID_INTEL_RS3DC040_SSDID:
1156 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1157 instance->host->host_no,
1158 MEGARAID_INTEL_RS3DC040_BRANDING);
1159 break;
1160 case MEGARAID_INTEL_RS3SC008_SSDID:
1161 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1162 instance->host->host_no,
1163 MEGARAID_INTEL_RS3SC008_BRANDING);
1164 break;
1165 case MEGARAID_INTEL_RS3MC044_SSDID:
1166 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1167 instance->host->host_no,
1168 MEGARAID_INTEL_RS3MC044_BRANDING);
1169 break;
1170 default:
1171 break;
1172 }
1173 break;
1174 case PCI_DEVICE_ID_LSI_FURY:
1175 switch (instance->pdev->subsystem_device) {
1176 case MEGARAID_INTEL_RS3WC080_SSDID:
1177 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1178 instance->host->host_no,
1179 MEGARAID_INTEL_RS3WC080_BRANDING);
1180 break;
1181 case MEGARAID_INTEL_RS3WC040_SSDID:
1182 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1183 instance->host->host_no,
1184 MEGARAID_INTEL_RS3WC040_BRANDING);
1185 break;
1186 default:
1187 break;
1188 }
1189 break;
1190 case PCI_DEVICE_ID_LSI_CUTLASS_52:
1191 case PCI_DEVICE_ID_LSI_CUTLASS_53:
1192 switch (instance->pdev->subsystem_device) {
1193 case MEGARAID_INTEL_RMS3BC160_SSDID:
1194 dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1195 instance->host->host_no,
1196 MEGARAID_INTEL_RMS3BC160_BRANDING);
1197 break;
1198 default:
1199 break;
1200 }
1201 break;
1202 default:
1203 break;
1204 }
1205 }
1206
1207 /**
1208 * megasas_init_adapter_fusion - Initializes the FW
1209 * @instance: Adapter soft state
1210 *
1211 * This is the main function for initializing firmware.
1212 */
1213 u32
1214 megasas_init_adapter_fusion(struct megasas_instance *instance)
1215 {
1216 struct megasas_register_set __iomem *reg_set;
1217 struct fusion_context *fusion;
1218 u32 max_cmd, scratch_pad_2;
1219 int i = 0, count;
1220
1221 fusion = instance->ctrl_context;
1222
1223 reg_set = instance->reg_set;
1224
1225 megasas_fusion_update_can_queue(instance, PROBE_CONTEXT);
1226
1227 /*
1228 * Reduce the max supported cmds by 1. This is to ensure that the
1229 * reply_q_sz (1 more than the max cmd that driver may send)
1230 * does not exceed max cmds that the FW can support
1231 */
1232 instance->max_fw_cmds = instance->max_fw_cmds-1;
1233
1234 /*
1235 * Only Driver's internal DCMDs and IOCTL DCMDs needs to have MFI frames
1236 */
1237 instance->max_mfi_cmds =
1238 MEGASAS_FUSION_INTERNAL_CMDS + MEGASAS_FUSION_IOCTL_CMDS;
1239
1240 max_cmd = instance->max_fw_cmds;
1241
1242 fusion->reply_q_depth = 2 * (((max_cmd + 1 + 15)/16)*16);
1243
1244 fusion->request_alloc_sz =
1245 sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *max_cmd;
1246 fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION)
1247 *(fusion->reply_q_depth);
1248 fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE +
1249 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE *
1250 (max_cmd + 1)); /* Extra 1 for SMID 0 */
1251
1252 scratch_pad_2 = readl(&instance->reg_set->outbound_scratch_pad_2);
1253 /* If scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK is set,
1254 * Firmware support extended IO chain frame which is 4 times more than
1255 * legacy Firmware.
1256 * Legacy Firmware - Frame size is (8 * 128) = 1K
1257 * 1M IO Firmware - Frame size is (8 * 128 * 4) = 4K
1258 */
1259 if (scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK)
1260 instance->max_chain_frame_sz =
1261 ((scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_MASK) >>
1262 MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_1MB_IO;
1263 else
1264 instance->max_chain_frame_sz =
1265 ((scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_MASK) >>
1266 MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_256K_IO;
1267
1268 if (instance->max_chain_frame_sz < MEGASAS_CHAIN_FRAME_SZ_MIN) {
1269 dev_warn(&instance->pdev->dev, "frame size %d invalid, fall back to legacy max frame size %d\n",
1270 instance->max_chain_frame_sz,
1271 MEGASAS_CHAIN_FRAME_SZ_MIN);
1272 instance->max_chain_frame_sz = MEGASAS_CHAIN_FRAME_SZ_MIN;
1273 }
1274
1275 fusion->max_sge_in_main_msg =
1276 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE
1277 - offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16;
1278
1279 fusion->max_sge_in_chain =
1280 instance->max_chain_frame_sz
1281 / sizeof(union MPI2_SGE_IO_UNION);
1282
1283 instance->max_num_sge =
1284 rounddown_pow_of_two(fusion->max_sge_in_main_msg
1285 + fusion->max_sge_in_chain - 2);
1286
1287 /* Used for pass thru MFI frame (DCMD) */
1288 fusion->chain_offset_mfi_pthru =
1289 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16;
1290
1291 fusion->chain_offset_io_request =
1292 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
1293 sizeof(union MPI2_SGE_IO_UNION))/16;
1294
1295 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
1296 for (i = 0 ; i < count; i++)
1297 fusion->last_reply_idx[i] = 0;
1298
1299 /*
1300 * For fusion adapters, 3 commands for IOCTL and 5 commands
1301 * for driver's internal DCMDs.
1302 */
1303 instance->max_scsi_cmds = instance->max_fw_cmds -
1304 (MEGASAS_FUSION_INTERNAL_CMDS +
1305 MEGASAS_FUSION_IOCTL_CMDS);
1306 sema_init(&instance->ioctl_sem, MEGASAS_FUSION_IOCTL_CMDS);
1307
1308 /*
1309 * Allocate memory for descriptors
1310 * Create a pool of commands
1311 */
1312 if (megasas_alloc_cmds(instance))
1313 goto fail_alloc_mfi_cmds;
1314 if (megasas_alloc_cmds_fusion(instance))
1315 goto fail_alloc_cmds;
1316
1317 if (megasas_ioc_init_fusion(instance))
1318 goto fail_ioc_init;
1319
1320 megasas_display_intel_branding(instance);
1321 if (megasas_get_ctrl_info(instance)) {
1322 dev_err(&instance->pdev->dev,
1323 "Could not get controller info. Fail from %s %d\n",
1324 __func__, __LINE__);
1325 goto fail_ioc_init;
1326 }
1327
1328 instance->flag_ieee = 1;
1329 fusion->fast_path_io = 0;
1330
1331 fusion->drv_map_pages = get_order(fusion->drv_map_sz);
1332 for (i = 0; i < 2; i++) {
1333 fusion->ld_map[i] = NULL;
1334 fusion->ld_drv_map[i] = (void *)__get_free_pages(GFP_KERNEL,
1335 fusion->drv_map_pages);
1336 if (!fusion->ld_drv_map[i]) {
1337 dev_err(&instance->pdev->dev, "Could not allocate "
1338 "memory for local map info for %d pages\n",
1339 fusion->drv_map_pages);
1340 if (i == 1)
1341 free_pages((ulong)fusion->ld_drv_map[0],
1342 fusion->drv_map_pages);
1343 goto fail_ioc_init;
1344 }
1345 memset(fusion->ld_drv_map[i], 0,
1346 ((1 << PAGE_SHIFT) << fusion->drv_map_pages));
1347 }
1348
1349 for (i = 0; i < 2; i++) {
1350 fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev,
1351 fusion->max_map_sz,
1352 &fusion->ld_map_phys[i],
1353 GFP_KERNEL);
1354 if (!fusion->ld_map[i]) {
1355 dev_err(&instance->pdev->dev, "Could not allocate memory "
1356 "for map info\n");
1357 goto fail_map_info;
1358 }
1359 }
1360
1361 if (!megasas_get_map_info(instance))
1362 megasas_sync_map_info(instance);
1363
1364 return 0;
1365
1366 fail_map_info:
1367 if (i == 1)
1368 dma_free_coherent(&instance->pdev->dev, fusion->max_map_sz,
1369 fusion->ld_map[0], fusion->ld_map_phys[0]);
1370 fail_ioc_init:
1371 megasas_free_cmds_fusion(instance);
1372 fail_alloc_cmds:
1373 megasas_free_cmds(instance);
1374 fail_alloc_mfi_cmds:
1375 return 1;
1376 }
1377
1378 /**
1379 * map_cmd_status - Maps FW cmd status to OS cmd status
1380 * @cmd : Pointer to cmd
1381 * @status : status of cmd returned by FW
1382 * @ext_status : ext status of cmd returned by FW
1383 */
1384
1385 void
1386 map_cmd_status(struct megasas_cmd_fusion *cmd, u8 status, u8 ext_status)
1387 {
1388
1389 switch (status) {
1390
1391 case MFI_STAT_OK:
1392 cmd->scmd->result = DID_OK << 16;
1393 break;
1394
1395 case MFI_STAT_SCSI_IO_FAILED:
1396 case MFI_STAT_LD_INIT_IN_PROGRESS:
1397 cmd->scmd->result = (DID_ERROR << 16) | ext_status;
1398 break;
1399
1400 case MFI_STAT_SCSI_DONE_WITH_ERROR:
1401
1402 cmd->scmd->result = (DID_OK << 16) | ext_status;
1403 if (ext_status == SAM_STAT_CHECK_CONDITION) {
1404 memset(cmd->scmd->sense_buffer, 0,
1405 SCSI_SENSE_BUFFERSIZE);
1406 memcpy(cmd->scmd->sense_buffer, cmd->sense,
1407 SCSI_SENSE_BUFFERSIZE);
1408 cmd->scmd->result |= DRIVER_SENSE << 24;
1409 }
1410 break;
1411
1412 case MFI_STAT_LD_OFFLINE:
1413 case MFI_STAT_DEVICE_NOT_FOUND:
1414 cmd->scmd->result = DID_BAD_TARGET << 16;
1415 break;
1416 case MFI_STAT_CONFIG_SEQ_MISMATCH:
1417 cmd->scmd->result = DID_IMM_RETRY << 16;
1418 break;
1419 default:
1420 dev_printk(KERN_DEBUG, &cmd->instance->pdev->dev, "FW status %#x\n", status);
1421 cmd->scmd->result = DID_ERROR << 16;
1422 break;
1423 }
1424 }
1425
1426 /**
1427 * megasas_make_sgl_fusion - Prepares 32-bit SGL
1428 * @instance: Adapter soft state
1429 * @scp: SCSI command from the mid-layer
1430 * @sgl_ptr: SGL to be filled in
1431 * @cmd: cmd we are working on
1432 *
1433 * If successful, this function returns the number of SG elements.
1434 */
1435 static int
1436 megasas_make_sgl_fusion(struct megasas_instance *instance,
1437 struct scsi_cmnd *scp,
1438 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
1439 struct megasas_cmd_fusion *cmd)
1440 {
1441 int i, sg_processed, sge_count;
1442 struct scatterlist *os_sgl;
1443 struct fusion_context *fusion;
1444
1445 fusion = instance->ctrl_context;
1446
1447 if (fusion->adapter_type == INVADER_SERIES) {
1448 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr;
1449 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
1450 sgl_ptr_end->Flags = 0;
1451 }
1452
1453 sge_count = scsi_dma_map(scp);
1454
1455 BUG_ON(sge_count < 0);
1456
1457 if (sge_count > instance->max_num_sge || !sge_count)
1458 return sge_count;
1459
1460 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1461 sgl_ptr->Length = cpu_to_le32(sg_dma_len(os_sgl));
1462 sgl_ptr->Address = cpu_to_le64(sg_dma_address(os_sgl));
1463 sgl_ptr->Flags = 0;
1464 if (fusion->adapter_type == INVADER_SERIES)
1465 if (i == sge_count - 1)
1466 sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST;
1467 sgl_ptr++;
1468
1469 sg_processed = i + 1;
1470
1471 if ((sg_processed == (fusion->max_sge_in_main_msg - 1)) &&
1472 (sge_count > fusion->max_sge_in_main_msg)) {
1473
1474 struct MPI25_IEEE_SGE_CHAIN64 *sg_chain;
1475 if (fusion->adapter_type == INVADER_SERIES) {
1476 if ((le16_to_cpu(cmd->io_request->IoFlags) &
1477 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) !=
1478 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH)
1479 cmd->io_request->ChainOffset =
1480 fusion->
1481 chain_offset_io_request;
1482 else
1483 cmd->io_request->ChainOffset = 0;
1484 } else
1485 cmd->io_request->ChainOffset =
1486 fusion->chain_offset_io_request;
1487
1488 sg_chain = sgl_ptr;
1489 /* Prepare chain element */
1490 sg_chain->NextChainOffset = 0;
1491 if (fusion->adapter_type == INVADER_SERIES)
1492 sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT;
1493 else
1494 sg_chain->Flags =
1495 (IEEE_SGE_FLAGS_CHAIN_ELEMENT |
1496 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR);
1497 sg_chain->Length = cpu_to_le32((sizeof(union MPI2_SGE_IO_UNION) * (sge_count - sg_processed)));
1498 sg_chain->Address = cpu_to_le64(cmd->sg_frame_phys_addr);
1499
1500 sgl_ptr =
1501 (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame;
1502 memset(sgl_ptr, 0, instance->max_chain_frame_sz);
1503 }
1504 }
1505
1506 return sge_count;
1507 }
1508
1509 /**
1510 * megasas_set_pd_lba - Sets PD LBA
1511 * @cdb: CDB
1512 * @cdb_len: cdb length
1513 * @start_blk: Start block of IO
1514 *
1515 * Used to set the PD LBA in CDB for FP IOs
1516 */
1517 void
1518 megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len,
1519 struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp,
1520 struct MR_DRV_RAID_MAP_ALL *local_map_ptr, u32 ref_tag)
1521 {
1522 struct MR_LD_RAID *raid;
1523 u32 ld;
1524 u64 start_blk = io_info->pdBlock;
1525 u8 *cdb = io_request->CDB.CDB32;
1526 u32 num_blocks = io_info->numBlocks;
1527 u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0;
1528
1529 /* Check if T10 PI (DIF) is enabled for this LD */
1530 ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr);
1531 raid = MR_LdRaidGet(ld, local_map_ptr);
1532 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) {
1533 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
1534 cdb[0] = MEGASAS_SCSI_VARIABLE_LENGTH_CMD;
1535 cdb[7] = MEGASAS_SCSI_ADDL_CDB_LEN;
1536
1537 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1538 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32;
1539 else
1540 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32;
1541 cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL;
1542
1543 /* LBA */
1544 cdb[12] = (u8)((start_blk >> 56) & 0xff);
1545 cdb[13] = (u8)((start_blk >> 48) & 0xff);
1546 cdb[14] = (u8)((start_blk >> 40) & 0xff);
1547 cdb[15] = (u8)((start_blk >> 32) & 0xff);
1548 cdb[16] = (u8)((start_blk >> 24) & 0xff);
1549 cdb[17] = (u8)((start_blk >> 16) & 0xff);
1550 cdb[18] = (u8)((start_blk >> 8) & 0xff);
1551 cdb[19] = (u8)(start_blk & 0xff);
1552
1553 /* Logical block reference tag */
1554 io_request->CDB.EEDP32.PrimaryReferenceTag =
1555 cpu_to_be32(ref_tag);
1556 io_request->CDB.EEDP32.PrimaryApplicationTagMask = cpu_to_be16(0xffff);
1557 io_request->IoFlags = cpu_to_le16(32); /* Specify 32-byte cdb */
1558
1559 /* Transfer length */
1560 cdb[28] = (u8)((num_blocks >> 24) & 0xff);
1561 cdb[29] = (u8)((num_blocks >> 16) & 0xff);
1562 cdb[30] = (u8)((num_blocks >> 8) & 0xff);
1563 cdb[31] = (u8)(num_blocks & 0xff);
1564
1565 /* set SCSI IO EEDPFlags */
1566 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) {
1567 io_request->EEDPFlags = cpu_to_le16(
1568 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
1569 MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
1570 MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP |
1571 MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG |
1572 MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD);
1573 } else {
1574 io_request->EEDPFlags = cpu_to_le16(
1575 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
1576 MPI2_SCSIIO_EEDPFLAGS_INSERT_OP);
1577 }
1578 io_request->Control |= cpu_to_le32((0x4 << 26));
1579 io_request->EEDPBlockSize = cpu_to_le32(scp->device->sector_size);
1580 } else {
1581 /* Some drives don't support 16/12 byte CDB's, convert to 10 */
1582 if (((cdb_len == 12) || (cdb_len == 16)) &&
1583 (start_blk <= 0xffffffff)) {
1584 if (cdb_len == 16) {
1585 opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10;
1586 flagvals = cdb[1];
1587 groupnum = cdb[14];
1588 control = cdb[15];
1589 } else {
1590 opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10;
1591 flagvals = cdb[1];
1592 groupnum = cdb[10];
1593 control = cdb[11];
1594 }
1595
1596 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
1597
1598 cdb[0] = opcode;
1599 cdb[1] = flagvals;
1600 cdb[6] = groupnum;
1601 cdb[9] = control;
1602
1603 /* Transfer length */
1604 cdb[8] = (u8)(num_blocks & 0xff);
1605 cdb[7] = (u8)((num_blocks >> 8) & 0xff);
1606
1607 io_request->IoFlags = cpu_to_le16(10); /* Specify 10-byte cdb */
1608 cdb_len = 10;
1609 } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) {
1610 /* Convert to 16 byte CDB for large LBA's */
1611 switch (cdb_len) {
1612 case 6:
1613 opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16;
1614 control = cdb[5];
1615 break;
1616 case 10:
1617 opcode =
1618 cdb[0] == READ_10 ? READ_16 : WRITE_16;
1619 flagvals = cdb[1];
1620 groupnum = cdb[6];
1621 control = cdb[9];
1622 break;
1623 case 12:
1624 opcode =
1625 cdb[0] == READ_12 ? READ_16 : WRITE_16;
1626 flagvals = cdb[1];
1627 groupnum = cdb[10];
1628 control = cdb[11];
1629 break;
1630 }
1631
1632 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
1633
1634 cdb[0] = opcode;
1635 cdb[1] = flagvals;
1636 cdb[14] = groupnum;
1637 cdb[15] = control;
1638
1639 /* Transfer length */
1640 cdb[13] = (u8)(num_blocks & 0xff);
1641 cdb[12] = (u8)((num_blocks >> 8) & 0xff);
1642 cdb[11] = (u8)((num_blocks >> 16) & 0xff);
1643 cdb[10] = (u8)((num_blocks >> 24) & 0xff);
1644
1645 io_request->IoFlags = cpu_to_le16(16); /* Specify 16-byte cdb */
1646 cdb_len = 16;
1647 }
1648
1649 /* Normal case, just load LBA here */
1650 switch (cdb_len) {
1651 case 6:
1652 {
1653 u8 val = cdb[1] & 0xE0;
1654 cdb[3] = (u8)(start_blk & 0xff);
1655 cdb[2] = (u8)((start_blk >> 8) & 0xff);
1656 cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f);
1657 break;
1658 }
1659 case 10:
1660 cdb[5] = (u8)(start_blk & 0xff);
1661 cdb[4] = (u8)((start_blk >> 8) & 0xff);
1662 cdb[3] = (u8)((start_blk >> 16) & 0xff);
1663 cdb[2] = (u8)((start_blk >> 24) & 0xff);
1664 break;
1665 case 12:
1666 cdb[5] = (u8)(start_blk & 0xff);
1667 cdb[4] = (u8)((start_blk >> 8) & 0xff);
1668 cdb[3] = (u8)((start_blk >> 16) & 0xff);
1669 cdb[2] = (u8)((start_blk >> 24) & 0xff);
1670 break;
1671 case 16:
1672 cdb[9] = (u8)(start_blk & 0xff);
1673 cdb[8] = (u8)((start_blk >> 8) & 0xff);
1674 cdb[7] = (u8)((start_blk >> 16) & 0xff);
1675 cdb[6] = (u8)((start_blk >> 24) & 0xff);
1676 cdb[5] = (u8)((start_blk >> 32) & 0xff);
1677 cdb[4] = (u8)((start_blk >> 40) & 0xff);
1678 cdb[3] = (u8)((start_blk >> 48) & 0xff);
1679 cdb[2] = (u8)((start_blk >> 56) & 0xff);
1680 break;
1681 }
1682 }
1683 }
1684
1685 /**
1686 * megasas_build_ldio_fusion - Prepares IOs to devices
1687 * @instance: Adapter soft state
1688 * @scp: SCSI command
1689 * @cmd: Command to be prepared
1690 *
1691 * Prepares the io_request and chain elements (sg_frame) for IO
1692 * The IO can be for PD (Fast Path) or LD
1693 */
1694 void
1695 megasas_build_ldio_fusion(struct megasas_instance *instance,
1696 struct scsi_cmnd *scp,
1697 struct megasas_cmd_fusion *cmd)
1698 {
1699 u8 fp_possible;
1700 u32 start_lba_lo, start_lba_hi, device_id, datalength = 0;
1701 struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
1702 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
1703 struct IO_REQUEST_INFO io_info;
1704 struct fusion_context *fusion;
1705 struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1706 u8 *raidLUN;
1707
1708 device_id = MEGASAS_DEV_INDEX(scp);
1709
1710 fusion = instance->ctrl_context;
1711
1712 io_request = cmd->io_request;
1713 io_request->RaidContext.VirtualDiskTgtId = cpu_to_le16(device_id);
1714 io_request->RaidContext.status = 0;
1715 io_request->RaidContext.exStatus = 0;
1716
1717 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
1718
1719 start_lba_lo = 0;
1720 start_lba_hi = 0;
1721 fp_possible = 0;
1722
1723 /*
1724 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1725 */
1726 if (scp->cmd_len == 6) {
1727 datalength = (u32) scp->cmnd[4];
1728 start_lba_lo = ((u32) scp->cmnd[1] << 16) |
1729 ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
1730
1731 start_lba_lo &= 0x1FFFFF;
1732 }
1733
1734 /*
1735 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1736 */
1737 else if (scp->cmd_len == 10) {
1738 datalength = (u32) scp->cmnd[8] |
1739 ((u32) scp->cmnd[7] << 8);
1740 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1741 ((u32) scp->cmnd[3] << 16) |
1742 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1743 }
1744
1745 /*
1746 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1747 */
1748 else if (scp->cmd_len == 12) {
1749 datalength = ((u32) scp->cmnd[6] << 24) |
1750 ((u32) scp->cmnd[7] << 16) |
1751 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1752 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1753 ((u32) scp->cmnd[3] << 16) |
1754 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1755 }
1756
1757 /*
1758 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1759 */
1760 else if (scp->cmd_len == 16) {
1761 datalength = ((u32) scp->cmnd[10] << 24) |
1762 ((u32) scp->cmnd[11] << 16) |
1763 ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
1764 start_lba_lo = ((u32) scp->cmnd[6] << 24) |
1765 ((u32) scp->cmnd[7] << 16) |
1766 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1767
1768 start_lba_hi = ((u32) scp->cmnd[2] << 24) |
1769 ((u32) scp->cmnd[3] << 16) |
1770 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1771 }
1772
1773 memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO));
1774 io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo;
1775 io_info.numBlocks = datalength;
1776 io_info.ldTgtId = device_id;
1777 io_request->DataLength = cpu_to_le32(scsi_bufflen(scp));
1778
1779 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1780 io_info.isRead = 1;
1781
1782 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1783
1784 if ((MR_TargetIdToLdGet(device_id, local_map_ptr) >=
1785 instance->fw_supported_vd_count) || (!fusion->fast_path_io)) {
1786 io_request->RaidContext.regLockFlags = 0;
1787 fp_possible = 0;
1788 } else {
1789 if (MR_BuildRaidContext(instance, &io_info,
1790 &io_request->RaidContext,
1791 local_map_ptr, &raidLUN))
1792 fp_possible = io_info.fpOkForIo;
1793 }
1794
1795 /* Use raw_smp_processor_id() for now until cmd->request->cpu is CPU
1796 id by default, not CPU group id, otherwise all MSI-X queues won't
1797 be utilized */
1798 cmd->request_desc->SCSIIO.MSIxIndex = instance->msix_vectors ?
1799 raw_smp_processor_id() % instance->msix_vectors : 0;
1800
1801 if (fp_possible) {
1802 megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp,
1803 local_map_ptr, start_lba_lo);
1804 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
1805 cmd->request_desc->SCSIIO.RequestFlags =
1806 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO
1807 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1808 if (fusion->adapter_type == INVADER_SERIES) {
1809 if (io_request->RaidContext.regLockFlags ==
1810 REGION_TYPE_UNUSED)
1811 cmd->request_desc->SCSIIO.RequestFlags =
1812 (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
1813 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1814 io_request->RaidContext.Type = MPI2_TYPE_CUDA;
1815 io_request->RaidContext.nseg = 0x1;
1816 io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
1817 io_request->RaidContext.regLockFlags |=
1818 (MR_RL_FLAGS_GRANT_DESTINATION_CUDA |
1819 MR_RL_FLAGS_SEQ_NUM_ENABLE);
1820 }
1821 if ((fusion->load_balance_info[device_id].loadBalanceFlag) &&
1822 (io_info.isRead)) {
1823 io_info.devHandle =
1824 get_updated_dev_handle(instance,
1825 &fusion->load_balance_info[device_id],
1826 &io_info);
1827 scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG;
1828 cmd->pd_r1_lb = io_info.pd_after_lb;
1829 } else
1830 scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
1831
1832 if ((raidLUN[0] == 1) &&
1833 (local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].validHandles > 1)) {
1834 instance->dev_handle = !(instance->dev_handle);
1835 io_info.devHandle =
1836 local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].devHandle[instance->dev_handle];
1837 }
1838
1839 cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle;
1840 io_request->DevHandle = io_info.devHandle;
1841 /* populate the LUN field */
1842 memcpy(io_request->LUN, raidLUN, 8);
1843 } else {
1844 io_request->RaidContext.timeoutValue =
1845 cpu_to_le16(local_map_ptr->raidMap.fpPdIoTimeoutSec);
1846 cmd->request_desc->SCSIIO.RequestFlags =
1847 (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO
1848 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1849 if (fusion->adapter_type == INVADER_SERIES) {
1850 if (io_info.do_fp_rlbypass ||
1851 (io_request->RaidContext.regLockFlags == REGION_TYPE_UNUSED))
1852 cmd->request_desc->SCSIIO.RequestFlags =
1853 (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
1854 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1855 io_request->RaidContext.Type = MPI2_TYPE_CUDA;
1856 io_request->RaidContext.regLockFlags |=
1857 (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 |
1858 MR_RL_FLAGS_SEQ_NUM_ENABLE);
1859 io_request->RaidContext.nseg = 0x1;
1860 }
1861 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
1862 io_request->DevHandle = cpu_to_le16(device_id);
1863 } /* Not FP */
1864 }
1865
1866 /**
1867 * megasas_build_ld_nonrw_fusion - prepares non rw ios for virtual disk
1868 * @instance: Adapter soft state
1869 * @scp: SCSI command
1870 * @cmd: Command to be prepared
1871 *
1872 * Prepares the io_request frame for non-rw io cmds for vd.
1873 */
1874 static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance,
1875 struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd)
1876 {
1877 u32 device_id;
1878 struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
1879 u16 pd_index = 0;
1880 struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1881 struct fusion_context *fusion = instance->ctrl_context;
1882 u8 span, physArm;
1883 __le16 devHandle;
1884 u32 ld, arRef, pd;
1885 struct MR_LD_RAID *raid;
1886 struct RAID_CONTEXT *pRAID_Context;
1887 u8 fp_possible = 1;
1888
1889 io_request = cmd->io_request;
1890 device_id = MEGASAS_DEV_INDEX(scmd);
1891 pd_index = MEGASAS_PD_INDEX(scmd);
1892 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1893 io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
1894 /* get RAID_Context pointer */
1895 pRAID_Context = &io_request->RaidContext;
1896 /* Check with FW team */
1897 pRAID_Context->VirtualDiskTgtId = cpu_to_le16(device_id);
1898 pRAID_Context->regLockRowLBA = 0;
1899 pRAID_Context->regLockLength = 0;
1900
1901 if (fusion->fast_path_io && (
1902 device_id < instance->fw_supported_vd_count)) {
1903
1904 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
1905 if (ld >= instance->fw_supported_vd_count)
1906 fp_possible = 0;
1907
1908 raid = MR_LdRaidGet(ld, local_map_ptr);
1909 if (!(raid->capability.fpNonRWCapable))
1910 fp_possible = 0;
1911 } else
1912 fp_possible = 0;
1913
1914 if (!fp_possible) {
1915 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
1916 io_request->DevHandle = cpu_to_le16(device_id);
1917 io_request->LUN[1] = scmd->device->lun;
1918 pRAID_Context->timeoutValue =
1919 cpu_to_le16 (scmd->request->timeout / HZ);
1920 cmd->request_desc->SCSIIO.RequestFlags =
1921 (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
1922 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1923 } else {
1924
1925 /* set RAID context values */
1926 pRAID_Context->configSeqNum = raid->seqNum;
1927 pRAID_Context->regLockFlags = REGION_TYPE_SHARED_READ;
1928 pRAID_Context->timeoutValue = cpu_to_le16(raid->fpIoTimeoutForLd);
1929
1930 /* get the DevHandle for the PD (since this is
1931 fpNonRWCapable, this is a single disk RAID0) */
1932 span = physArm = 0;
1933 arRef = MR_LdSpanArrayGet(ld, span, local_map_ptr);
1934 pd = MR_ArPdGet(arRef, physArm, local_map_ptr);
1935 devHandle = MR_PdDevHandleGet(pd, local_map_ptr);
1936
1937 /* build request descriptor */
1938 cmd->request_desc->SCSIIO.RequestFlags =
1939 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
1940 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1941 cmd->request_desc->SCSIIO.DevHandle = devHandle;
1942
1943 /* populate the LUN field */
1944 memcpy(io_request->LUN, raid->LUN, 8);
1945
1946 /* build the raidScsiIO structure */
1947 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
1948 io_request->DevHandle = devHandle;
1949 }
1950 }
1951
1952 /**
1953 * megasas_build_syspd_fusion - prepares rw/non-rw ios for syspd
1954 * @instance: Adapter soft state
1955 * @scp: SCSI command
1956 * @cmd: Command to be prepared
1957 * @fp_possible: parameter to detect fast path or firmware path io.
1958 *
1959 * Prepares the io_request frame for rw/non-rw io cmds for syspds
1960 */
1961 static void
1962 megasas_build_syspd_fusion(struct megasas_instance *instance,
1963 struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd, u8 fp_possible)
1964 {
1965 u32 device_id;
1966 struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
1967 u16 pd_index = 0;
1968 u16 os_timeout_value;
1969 u16 timeout_limit;
1970 struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1971 struct RAID_CONTEXT *pRAID_Context;
1972 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1973 struct fusion_context *fusion = instance->ctrl_context;
1974 pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id - 1) & 1];
1975
1976 device_id = MEGASAS_DEV_INDEX(scmd);
1977 pd_index = MEGASAS_PD_INDEX(scmd);
1978 os_timeout_value = scmd->request->timeout / HZ;
1979
1980 io_request = cmd->io_request;
1981 /* get RAID_Context pointer */
1982 pRAID_Context = &io_request->RaidContext;
1983 pRAID_Context->regLockFlags = 0;
1984 pRAID_Context->regLockRowLBA = 0;
1985 pRAID_Context->regLockLength = 0;
1986 io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
1987 io_request->LUN[1] = scmd->device->lun;
1988 pRAID_Context->RAIDFlags = MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD
1989 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT;
1990
1991 /* If FW supports PD sequence number */
1992 if (instance->use_seqnum_jbod_fp &&
1993 instance->pd_list[pd_index].driveType == TYPE_DISK) {
1994 /* TgtId must be incremented by 255 as jbod seq number is index
1995 * below raid map
1996 */
1997 pRAID_Context->VirtualDiskTgtId =
1998 cpu_to_le16(device_id + (MAX_PHYSICAL_DEVICES - 1));
1999 pRAID_Context->configSeqNum = pd_sync->seq[pd_index].seqNum;
2000 io_request->DevHandle = pd_sync->seq[pd_index].devHandle;
2001 pRAID_Context->regLockFlags |=
2002 (MR_RL_FLAGS_SEQ_NUM_ENABLE|MR_RL_FLAGS_GRANT_DESTINATION_CUDA);
2003 } else if (fusion->fast_path_io) {
2004 pRAID_Context->VirtualDiskTgtId = cpu_to_le16(device_id);
2005 pRAID_Context->configSeqNum = 0;
2006 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
2007 io_request->DevHandle =
2008 local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
2009 } else {
2010 /* Want to send all IO via FW path */
2011 pRAID_Context->VirtualDiskTgtId = cpu_to_le16(device_id);
2012 pRAID_Context->configSeqNum = 0;
2013 io_request->DevHandle = cpu_to_le16(0xFFFF);
2014 }
2015
2016 cmd->request_desc->SCSIIO.DevHandle = io_request->DevHandle;
2017 cmd->request_desc->SCSIIO.MSIxIndex =
2018 instance->msix_vectors ?
2019 (raw_smp_processor_id() % instance->msix_vectors) : 0;
2020
2021
2022 if (!fp_possible) {
2023 /* system pd firmware path */
2024 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
2025 cmd->request_desc->SCSIIO.RequestFlags =
2026 (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
2027 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2028 pRAID_Context->timeoutValue = cpu_to_le16(os_timeout_value);
2029 pRAID_Context->VirtualDiskTgtId = cpu_to_le16(device_id);
2030 } else {
2031 /* system pd Fast Path */
2032 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
2033 timeout_limit = (scmd->device->type == TYPE_DISK) ?
2034 255 : 0xFFFF;
2035 pRAID_Context->timeoutValue =
2036 cpu_to_le16((os_timeout_value > timeout_limit) ?
2037 timeout_limit : os_timeout_value);
2038 if (fusion->adapter_type == INVADER_SERIES) {
2039 pRAID_Context->Type = MPI2_TYPE_CUDA;
2040 pRAID_Context->nseg = 0x1;
2041 io_request->IoFlags |=
2042 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
2043 }
2044 cmd->request_desc->SCSIIO.RequestFlags =
2045 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
2046 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2047 }
2048 }
2049
2050 /**
2051 * megasas_build_io_fusion - Prepares IOs to devices
2052 * @instance: Adapter soft state
2053 * @scp: SCSI command
2054 * @cmd: Command to be prepared
2055 *
2056 * Invokes helper functions to prepare request frames
2057 * and sets flags appropriate for IO/Non-IO cmd
2058 */
2059 int
2060 megasas_build_io_fusion(struct megasas_instance *instance,
2061 struct scsi_cmnd *scp,
2062 struct megasas_cmd_fusion *cmd)
2063 {
2064 u16 sge_count;
2065 u8 cmd_type;
2066 struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request;
2067
2068 /* Zero out some fields so they don't get reused */
2069 memset(io_request->LUN, 0x0, 8);
2070 io_request->CDB.EEDP32.PrimaryReferenceTag = 0;
2071 io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0;
2072 io_request->EEDPFlags = 0;
2073 io_request->Control = 0;
2074 io_request->EEDPBlockSize = 0;
2075 io_request->ChainOffset = 0;
2076 io_request->RaidContext.RAIDFlags = 0;
2077 io_request->RaidContext.Type = 0;
2078 io_request->RaidContext.nseg = 0;
2079
2080 memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len);
2081 /*
2082 * Just the CDB length,rest of the Flags are zero
2083 * This will be modified for FP in build_ldio_fusion
2084 */
2085 io_request->IoFlags = cpu_to_le16(scp->cmd_len);
2086
2087 switch (cmd_type = megasas_cmd_type(scp)) {
2088 case READ_WRITE_LDIO:
2089 megasas_build_ldio_fusion(instance, scp, cmd);
2090 break;
2091 case NON_READ_WRITE_LDIO:
2092 megasas_build_ld_nonrw_fusion(instance, scp, cmd);
2093 break;
2094 case READ_WRITE_SYSPDIO:
2095 case NON_READ_WRITE_SYSPDIO:
2096 if (instance->secure_jbod_support &&
2097 (cmd_type == NON_READ_WRITE_SYSPDIO))
2098 megasas_build_syspd_fusion(instance, scp, cmd, 0);
2099 else
2100 megasas_build_syspd_fusion(instance, scp, cmd, 1);
2101 break;
2102 default:
2103 break;
2104 }
2105
2106 /*
2107 * Construct SGL
2108 */
2109
2110 sge_count =
2111 megasas_make_sgl_fusion(instance, scp,
2112 (struct MPI25_IEEE_SGE_CHAIN64 *)
2113 &io_request->SGL, cmd);
2114
2115 if (sge_count > instance->max_num_sge) {
2116 dev_err(&instance->pdev->dev, "Error. sge_count (0x%x) exceeds "
2117 "max (0x%x) allowed\n", sge_count,
2118 instance->max_num_sge);
2119 return 1;
2120 }
2121
2122 /* numSGE store lower 8 bit of sge_count.
2123 * numSGEExt store higher 8 bit of sge_count
2124 */
2125 io_request->RaidContext.numSGE = sge_count;
2126 io_request->RaidContext.numSGEExt = (u8)(sge_count >> 8);
2127
2128 io_request->SGLFlags = cpu_to_le16(MPI2_SGE_FLAGS_64_BIT_ADDRESSING);
2129
2130 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
2131 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_WRITE);
2132 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
2133 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_READ);
2134
2135 io_request->SGLOffset0 =
2136 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4;
2137
2138 io_request->SenseBufferLowAddress = cpu_to_le32(cmd->sense_phys_addr);
2139 io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
2140
2141 cmd->scmd = scp;
2142 scp->SCp.ptr = (char *)cmd;
2143
2144 return 0;
2145 }
2146
2147 union MEGASAS_REQUEST_DESCRIPTOR_UNION *
2148 megasas_get_request_descriptor(struct megasas_instance *instance, u16 index)
2149 {
2150 u8 *p;
2151 struct fusion_context *fusion;
2152
2153 if (index >= instance->max_fw_cmds) {
2154 dev_err(&instance->pdev->dev, "Invalid SMID (0x%x)request for "
2155 "descriptor for scsi%d\n", index,
2156 instance->host->host_no);
2157 return NULL;
2158 }
2159 fusion = instance->ctrl_context;
2160 p = fusion->req_frames_desc
2161 +sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *index;
2162
2163 return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p;
2164 }
2165
2166 /**
2167 * megasas_build_and_issue_cmd_fusion -Main routine for building and
2168 * issuing non IOCTL cmd
2169 * @instance: Adapter soft state
2170 * @scmd: pointer to scsi cmd from OS
2171 */
2172 static u32
2173 megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance,
2174 struct scsi_cmnd *scmd)
2175 {
2176 struct megasas_cmd_fusion *cmd;
2177 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2178 u32 index;
2179 struct fusion_context *fusion;
2180
2181 fusion = instance->ctrl_context;
2182
2183 if ((megasas_cmd_type(scmd) == READ_WRITE_LDIO) &&
2184 instance->ldio_threshold &&
2185 (atomic_inc_return(&instance->ldio_outstanding) >
2186 instance->ldio_threshold)) {
2187 atomic_dec(&instance->ldio_outstanding);
2188 return SCSI_MLQUEUE_DEVICE_BUSY;
2189 }
2190
2191 cmd = megasas_get_cmd_fusion(instance, scmd->request->tag);
2192
2193 index = cmd->index;
2194
2195 req_desc = megasas_get_request_descriptor(instance, index-1);
2196 if (!req_desc)
2197 return SCSI_MLQUEUE_HOST_BUSY;
2198
2199 req_desc->Words = 0;
2200 cmd->request_desc = req_desc;
2201
2202 if (megasas_build_io_fusion(instance, scmd, cmd)) {
2203 megasas_return_cmd_fusion(instance, cmd);
2204 dev_err(&instance->pdev->dev, "Error building command\n");
2205 cmd->request_desc = NULL;
2206 return SCSI_MLQUEUE_HOST_BUSY;
2207 }
2208
2209 req_desc = cmd->request_desc;
2210 req_desc->SCSIIO.SMID = cpu_to_le16(index);
2211
2212 if (cmd->io_request->ChainOffset != 0 &&
2213 cmd->io_request->ChainOffset != 0xF)
2214 dev_err(&instance->pdev->dev, "The chain offset value is not "
2215 "correct : %x\n", cmd->io_request->ChainOffset);
2216
2217 /*
2218 * Issue the command to the FW
2219 */
2220 atomic_inc(&instance->fw_outstanding);
2221
2222 megasas_fire_cmd_fusion(instance, req_desc);
2223
2224 return 0;
2225 }
2226
2227 /**
2228 * complete_cmd_fusion - Completes command
2229 * @instance: Adapter soft state
2230 * Completes all commands that is in reply descriptor queue
2231 */
2232 int
2233 complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex)
2234 {
2235 union MPI2_REPLY_DESCRIPTORS_UNION *desc;
2236 struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc;
2237 struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req;
2238 struct fusion_context *fusion;
2239 struct megasas_cmd *cmd_mfi;
2240 struct megasas_cmd_fusion *cmd_fusion;
2241 u16 smid, num_completed;
2242 u8 reply_descript_type;
2243 u32 status, extStatus, device_id;
2244 union desc_value d_val;
2245 struct LD_LOAD_BALANCE_INFO *lbinfo;
2246 int threshold_reply_count = 0;
2247 struct scsi_cmnd *scmd_local = NULL;
2248 struct MR_TASK_MANAGE_REQUEST *mr_tm_req;
2249 struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_tm_req;
2250
2251 fusion = instance->ctrl_context;
2252
2253 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
2254 return IRQ_HANDLED;
2255
2256 desc = fusion->reply_frames_desc[MSIxIndex] +
2257 fusion->last_reply_idx[MSIxIndex];
2258
2259 reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
2260
2261 d_val.word = desc->Words;
2262
2263 reply_descript_type = reply_desc->ReplyFlags &
2264 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
2265
2266 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
2267 return IRQ_NONE;
2268
2269 num_completed = 0;
2270
2271 while (d_val.u.low != cpu_to_le32(UINT_MAX) &&
2272 d_val.u.high != cpu_to_le32(UINT_MAX)) {
2273 smid = le16_to_cpu(reply_desc->SMID);
2274
2275 cmd_fusion = fusion->cmd_list[smid - 1];
2276
2277 scsi_io_req =
2278 (struct MPI2_RAID_SCSI_IO_REQUEST *)
2279 cmd_fusion->io_request;
2280
2281 if (cmd_fusion->scmd)
2282 cmd_fusion->scmd->SCp.ptr = NULL;
2283
2284 scmd_local = cmd_fusion->scmd;
2285 status = scsi_io_req->RaidContext.status;
2286 extStatus = scsi_io_req->RaidContext.exStatus;
2287
2288 switch (scsi_io_req->Function) {
2289 case MPI2_FUNCTION_SCSI_TASK_MGMT:
2290 mr_tm_req = (struct MR_TASK_MANAGE_REQUEST *)
2291 cmd_fusion->io_request;
2292 mpi_tm_req = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *)
2293 &mr_tm_req->TmRequest;
2294 dev_dbg(&instance->pdev->dev, "TM completion:"
2295 "type: 0x%x TaskMID: 0x%x\n",
2296 mpi_tm_req->TaskType, mpi_tm_req->TaskMID);
2297 complete(&cmd_fusion->done);
2298 break;
2299 case MPI2_FUNCTION_SCSI_IO_REQUEST: /*Fast Path IO.*/
2300 /* Update load balancing info */
2301 device_id = MEGASAS_DEV_INDEX(scmd_local);
2302 lbinfo = &fusion->load_balance_info[device_id];
2303 if (cmd_fusion->scmd->SCp.Status &
2304 MEGASAS_LOAD_BALANCE_FLAG) {
2305 atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]);
2306 cmd_fusion->scmd->SCp.Status &=
2307 ~MEGASAS_LOAD_BALANCE_FLAG;
2308 }
2309 if (reply_descript_type ==
2310 MPI2_RPY_DESCRIPT_FLAGS_SCSI_IO_SUCCESS) {
2311 if (megasas_dbg_lvl == 5)
2312 dev_err(&instance->pdev->dev, "\nFAST Path "
2313 "IO Success\n");
2314 }
2315 /* Fall thru and complete IO */
2316 case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */
2317 /* Map the FW Cmd Status */
2318 map_cmd_status(cmd_fusion, status, extStatus);
2319 scsi_io_req->RaidContext.status = 0;
2320 scsi_io_req->RaidContext.exStatus = 0;
2321 if (megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)
2322 atomic_dec(&instance->ldio_outstanding);
2323 megasas_return_cmd_fusion(instance, cmd_fusion);
2324 scsi_dma_unmap(scmd_local);
2325 scmd_local->scsi_done(scmd_local);
2326 atomic_dec(&instance->fw_outstanding);
2327
2328 break;
2329 case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */
2330 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
2331
2332 /* Poll mode. Dummy free.
2333 * In case of Interrupt mode, caller has reverse check.
2334 */
2335 if (cmd_mfi->flags & DRV_DCMD_POLLED_MODE) {
2336 cmd_mfi->flags &= ~DRV_DCMD_POLLED_MODE;
2337 megasas_return_cmd(instance, cmd_mfi);
2338 } else
2339 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
2340 break;
2341 }
2342
2343 fusion->last_reply_idx[MSIxIndex]++;
2344 if (fusion->last_reply_idx[MSIxIndex] >=
2345 fusion->reply_q_depth)
2346 fusion->last_reply_idx[MSIxIndex] = 0;
2347
2348 desc->Words = cpu_to_le64(ULLONG_MAX);
2349 num_completed++;
2350 threshold_reply_count++;
2351
2352 /* Get the next reply descriptor */
2353 if (!fusion->last_reply_idx[MSIxIndex])
2354 desc = fusion->reply_frames_desc[MSIxIndex];
2355 else
2356 desc++;
2357
2358 reply_desc =
2359 (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
2360
2361 d_val.word = desc->Words;
2362
2363 reply_descript_type = reply_desc->ReplyFlags &
2364 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
2365
2366 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
2367 break;
2368 /*
2369 * Write to reply post host index register after completing threshold
2370 * number of reply counts and still there are more replies in reply queue
2371 * pending to be completed
2372 */
2373 if (threshold_reply_count >= THRESHOLD_REPLY_COUNT) {
2374 if (fusion->adapter_type == INVADER_SERIES)
2375 writel(((MSIxIndex & 0x7) << 24) |
2376 fusion->last_reply_idx[MSIxIndex],
2377 instance->reply_post_host_index_addr[MSIxIndex/8]);
2378 else
2379 writel((MSIxIndex << 24) |
2380 fusion->last_reply_idx[MSIxIndex],
2381 instance->reply_post_host_index_addr[0]);
2382 threshold_reply_count = 0;
2383 }
2384 }
2385
2386 if (!num_completed)
2387 return IRQ_NONE;
2388
2389 wmb();
2390 if (fusion->adapter_type == INVADER_SERIES)
2391 writel(((MSIxIndex & 0x7) << 24) |
2392 fusion->last_reply_idx[MSIxIndex],
2393 instance->reply_post_host_index_addr[MSIxIndex/8]);
2394 else
2395 writel((MSIxIndex << 24) |
2396 fusion->last_reply_idx[MSIxIndex],
2397 instance->reply_post_host_index_addr[0]);
2398 megasas_check_and_restore_queue_depth(instance);
2399 return IRQ_HANDLED;
2400 }
2401
2402 /**
2403 * megasas_complete_cmd_dpc_fusion - Completes command
2404 * @instance: Adapter soft state
2405 *
2406 * Tasklet to complete cmds
2407 */
2408 void
2409 megasas_complete_cmd_dpc_fusion(unsigned long instance_addr)
2410 {
2411 struct megasas_instance *instance =
2412 (struct megasas_instance *)instance_addr;
2413 unsigned long flags;
2414 u32 count, MSIxIndex;
2415
2416 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
2417
2418 /* If we have already declared adapter dead, donot complete cmds */
2419 spin_lock_irqsave(&instance->hba_lock, flags);
2420 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2421 spin_unlock_irqrestore(&instance->hba_lock, flags);
2422 return;
2423 }
2424 spin_unlock_irqrestore(&instance->hba_lock, flags);
2425
2426 for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++)
2427 complete_cmd_fusion(instance, MSIxIndex);
2428 }
2429
2430 /**
2431 * megasas_isr_fusion - isr entry point
2432 */
2433 irqreturn_t megasas_isr_fusion(int irq, void *devp)
2434 {
2435 struct megasas_irq_context *irq_context = devp;
2436 struct megasas_instance *instance = irq_context->instance;
2437 u32 mfiStatus, fw_state, dma_state;
2438
2439 if (instance->mask_interrupts)
2440 return IRQ_NONE;
2441
2442 if (!instance->msix_vectors) {
2443 mfiStatus = instance->instancet->clear_intr(instance->reg_set);
2444 if (!mfiStatus)
2445 return IRQ_NONE;
2446 }
2447
2448 /* If we are resetting, bail */
2449 if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) {
2450 instance->instancet->clear_intr(instance->reg_set);
2451 return IRQ_HANDLED;
2452 }
2453
2454 if (!complete_cmd_fusion(instance, irq_context->MSIxIndex)) {
2455 instance->instancet->clear_intr(instance->reg_set);
2456 /* If we didn't complete any commands, check for FW fault */
2457 fw_state = instance->instancet->read_fw_status_reg(
2458 instance->reg_set) & MFI_STATE_MASK;
2459 dma_state = instance->instancet->read_fw_status_reg
2460 (instance->reg_set) & MFI_STATE_DMADONE;
2461 if (instance->crash_dump_drv_support &&
2462 instance->crash_dump_app_support) {
2463 /* Start collecting crash, if DMA bit is done */
2464 if ((fw_state == MFI_STATE_FAULT) && dma_state)
2465 schedule_work(&instance->crash_init);
2466 else if (fw_state == MFI_STATE_FAULT)
2467 schedule_work(&instance->work_init);
2468 } else if (fw_state == MFI_STATE_FAULT) {
2469 dev_warn(&instance->pdev->dev, "Iop2SysDoorbellInt"
2470 "for scsi%d\n", instance->host->host_no);
2471 schedule_work(&instance->work_init);
2472 }
2473 }
2474
2475 return IRQ_HANDLED;
2476 }
2477
2478 /**
2479 * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru
2480 * @instance: Adapter soft state
2481 * mfi_cmd: megasas_cmd pointer
2482 *
2483 */
2484 u8
2485 build_mpt_mfi_pass_thru(struct megasas_instance *instance,
2486 struct megasas_cmd *mfi_cmd)
2487 {
2488 struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain;
2489 struct MPI2_RAID_SCSI_IO_REQUEST *io_req;
2490 struct megasas_cmd_fusion *cmd;
2491 struct fusion_context *fusion;
2492 struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr;
2493
2494 fusion = instance->ctrl_context;
2495
2496 cmd = megasas_get_cmd_fusion(instance,
2497 instance->max_scsi_cmds + mfi_cmd->index);
2498
2499 /* Save the smid. To be used for returning the cmd */
2500 mfi_cmd->context.smid = cmd->index;
2501
2502 /*
2503 * For cmds where the flag is set, store the flag and check
2504 * on completion. For cmds with this flag, don't call
2505 * megasas_complete_cmd
2506 */
2507
2508 if (frame_hdr->flags & cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE))
2509 mfi_cmd->flags |= DRV_DCMD_POLLED_MODE;
2510
2511 io_req = cmd->io_request;
2512
2513 if (fusion->adapter_type == INVADER_SERIES) {
2514 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end =
2515 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL;
2516 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
2517 sgl_ptr_end->Flags = 0;
2518 }
2519
2520 mpi25_ieee_chain =
2521 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain;
2522
2523 io_req->Function = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST;
2524 io_req->SGLOffset0 = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST,
2525 SGL) / 4;
2526 io_req->ChainOffset = fusion->chain_offset_mfi_pthru;
2527
2528 mpi25_ieee_chain->Address = cpu_to_le64(mfi_cmd->frame_phys_addr);
2529
2530 mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
2531 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR;
2532
2533 mpi25_ieee_chain->Length = cpu_to_le32(instance->max_chain_frame_sz);
2534
2535 return 0;
2536 }
2537
2538 /**
2539 * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd
2540 * @instance: Adapter soft state
2541 * @cmd: mfi cmd to build
2542 *
2543 */
2544 union MEGASAS_REQUEST_DESCRIPTOR_UNION *
2545 build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
2546 {
2547 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2548 u16 index;
2549
2550 if (build_mpt_mfi_pass_thru(instance, cmd)) {
2551 dev_err(&instance->pdev->dev, "Couldn't build MFI pass thru cmd\n");
2552 return NULL;
2553 }
2554
2555 index = cmd->context.smid;
2556
2557 req_desc = megasas_get_request_descriptor(instance, index - 1);
2558
2559 if (!req_desc)
2560 return NULL;
2561
2562 req_desc->Words = 0;
2563 req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
2564 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2565
2566 req_desc->SCSIIO.SMID = cpu_to_le16(index);
2567
2568 return req_desc;
2569 }
2570
2571 /**
2572 * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd
2573 * @instance: Adapter soft state
2574 * @cmd: mfi cmd pointer
2575 *
2576 */
2577 int
2578 megasas_issue_dcmd_fusion(struct megasas_instance *instance,
2579 struct megasas_cmd *cmd)
2580 {
2581 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2582
2583 req_desc = build_mpt_cmd(instance, cmd);
2584 if (!req_desc) {
2585 dev_info(&instance->pdev->dev, "Failed from %s %d\n",
2586 __func__, __LINE__);
2587 return DCMD_NOT_FIRED;
2588 }
2589
2590 megasas_fire_cmd_fusion(instance, req_desc);
2591 return DCMD_SUCCESS;
2592 }
2593
2594 /**
2595 * megasas_release_fusion - Reverses the FW initialization
2596 * @instance: Adapter soft state
2597 */
2598 void
2599 megasas_release_fusion(struct megasas_instance *instance)
2600 {
2601 megasas_free_cmds(instance);
2602 megasas_free_cmds_fusion(instance);
2603
2604 iounmap(instance->reg_set);
2605
2606 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
2607 }
2608
2609 /**
2610 * megasas_read_fw_status_reg_fusion - returns the current FW status value
2611 * @regs: MFI register set
2612 */
2613 static u32
2614 megasas_read_fw_status_reg_fusion(struct megasas_register_set __iomem *regs)
2615 {
2616 return readl(&(regs)->outbound_scratch_pad);
2617 }
2618
2619 /**
2620 * megasas_alloc_host_crash_buffer - Host buffers for Crash dump collection from Firmware
2621 * @instance: Controller's soft instance
2622 * return: Number of allocated host crash buffers
2623 */
2624 static void
2625 megasas_alloc_host_crash_buffer(struct megasas_instance *instance)
2626 {
2627 unsigned int i;
2628
2629 instance->crash_buf_pages = get_order(CRASH_DMA_BUF_SIZE);
2630 for (i = 0; i < MAX_CRASH_DUMP_SIZE; i++) {
2631 instance->crash_buf[i] = (void *)__get_free_pages(GFP_KERNEL,
2632 instance->crash_buf_pages);
2633 if (!instance->crash_buf[i]) {
2634 dev_info(&instance->pdev->dev, "Firmware crash dump "
2635 "memory allocation failed at index %d\n", i);
2636 break;
2637 }
2638 memset(instance->crash_buf[i], 0,
2639 ((1 << PAGE_SHIFT) << instance->crash_buf_pages));
2640 }
2641 instance->drv_buf_alloc = i;
2642 }
2643
2644 /**
2645 * megasas_free_host_crash_buffer - Host buffers for Crash dump collection from Firmware
2646 * @instance: Controller's soft instance
2647 */
2648 void
2649 megasas_free_host_crash_buffer(struct megasas_instance *instance)
2650 {
2651 unsigned int i
2652 ;
2653 for (i = 0; i < instance->drv_buf_alloc; i++) {
2654 if (instance->crash_buf[i])
2655 free_pages((ulong)instance->crash_buf[i],
2656 instance->crash_buf_pages);
2657 }
2658 instance->drv_buf_index = 0;
2659 instance->drv_buf_alloc = 0;
2660 instance->fw_crash_state = UNAVAILABLE;
2661 instance->fw_crash_buffer_size = 0;
2662 }
2663
2664 /**
2665 * megasas_adp_reset_fusion - For controller reset
2666 * @regs: MFI register set
2667 */
2668 static int
2669 megasas_adp_reset_fusion(struct megasas_instance *instance,
2670 struct megasas_register_set __iomem *regs)
2671 {
2672 u32 host_diag, abs_state, retry;
2673
2674 /* Now try to reset the chip */
2675 writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
2676 writel(MPI2_WRSEQ_1ST_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
2677 writel(MPI2_WRSEQ_2ND_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
2678 writel(MPI2_WRSEQ_3RD_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
2679 writel(MPI2_WRSEQ_4TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
2680 writel(MPI2_WRSEQ_5TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
2681 writel(MPI2_WRSEQ_6TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
2682
2683 /* Check that the diag write enable (DRWE) bit is on */
2684 host_diag = readl(&instance->reg_set->fusion_host_diag);
2685 retry = 0;
2686 while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) {
2687 msleep(100);
2688 host_diag = readl(&instance->reg_set->fusion_host_diag);
2689 if (retry++ == 100) {
2690 dev_warn(&instance->pdev->dev,
2691 "Host diag unlock failed from %s %d\n",
2692 __func__, __LINE__);
2693 break;
2694 }
2695 }
2696 if (!(host_diag & HOST_DIAG_WRITE_ENABLE))
2697 return -1;
2698
2699 /* Send chip reset command */
2700 writel(host_diag | HOST_DIAG_RESET_ADAPTER,
2701 &instance->reg_set->fusion_host_diag);
2702 msleep(3000);
2703
2704 /* Make sure reset adapter bit is cleared */
2705 host_diag = readl(&instance->reg_set->fusion_host_diag);
2706 retry = 0;
2707 while (host_diag & HOST_DIAG_RESET_ADAPTER) {
2708 msleep(100);
2709 host_diag = readl(&instance->reg_set->fusion_host_diag);
2710 if (retry++ == 1000) {
2711 dev_warn(&instance->pdev->dev,
2712 "Diag reset adapter never cleared %s %d\n",
2713 __func__, __LINE__);
2714 break;
2715 }
2716 }
2717 if (host_diag & HOST_DIAG_RESET_ADAPTER)
2718 return -1;
2719
2720 abs_state = instance->instancet->read_fw_status_reg(instance->reg_set)
2721 & MFI_STATE_MASK;
2722 retry = 0;
2723
2724 while ((abs_state <= MFI_STATE_FW_INIT) && (retry++ < 1000)) {
2725 msleep(100);
2726 abs_state = instance->instancet->
2727 read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
2728 }
2729 if (abs_state <= MFI_STATE_FW_INIT) {
2730 dev_warn(&instance->pdev->dev,
2731 "fw state < MFI_STATE_FW_INIT, state = 0x%x %s %d\n",
2732 abs_state, __func__, __LINE__);
2733 return -1;
2734 }
2735
2736 return 0;
2737 }
2738
2739 /**
2740 * megasas_check_reset_fusion - For controller reset check
2741 * @regs: MFI register set
2742 */
2743 static int
2744 megasas_check_reset_fusion(struct megasas_instance *instance,
2745 struct megasas_register_set __iomem *regs)
2746 {
2747 return 0;
2748 }
2749
2750 /* This function waits for outstanding commands on fusion to complete */
2751 int megasas_wait_for_outstanding_fusion(struct megasas_instance *instance,
2752 int reason, int *convert)
2753 {
2754 int i, outstanding, retval = 0, hb_seconds_missed = 0;
2755 u32 fw_state;
2756
2757 for (i = 0; i < resetwaittime; i++) {
2758 /* Check if firmware is in fault state */
2759 fw_state = instance->instancet->read_fw_status_reg(
2760 instance->reg_set) & MFI_STATE_MASK;
2761 if (fw_state == MFI_STATE_FAULT) {
2762 dev_warn(&instance->pdev->dev, "Found FW in FAULT state,"
2763 " will reset adapter scsi%d.\n",
2764 instance->host->host_no);
2765 megasas_complete_cmd_dpc_fusion((unsigned long)instance);
2766 retval = 1;
2767 goto out;
2768 }
2769
2770 if (reason == MFI_IO_TIMEOUT_OCR) {
2771 dev_info(&instance->pdev->dev,
2772 "MFI IO is timed out, initiating OCR\n");
2773 megasas_complete_cmd_dpc_fusion((unsigned long)instance);
2774 retval = 1;
2775 goto out;
2776 }
2777
2778 /* If SR-IOV VF mode & heartbeat timeout, don't wait */
2779 if (instance->requestorId && !reason) {
2780 retval = 1;
2781 goto out;
2782 }
2783
2784 /* If SR-IOV VF mode & I/O timeout, check for HB timeout */
2785 if (instance->requestorId && reason) {
2786 if (instance->hb_host_mem->HB.fwCounter !=
2787 instance->hb_host_mem->HB.driverCounter) {
2788 instance->hb_host_mem->HB.driverCounter =
2789 instance->hb_host_mem->HB.fwCounter;
2790 hb_seconds_missed = 0;
2791 } else {
2792 hb_seconds_missed++;
2793 if (hb_seconds_missed ==
2794 (MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF/HZ)) {
2795 dev_warn(&instance->pdev->dev, "SR-IOV:"
2796 " Heartbeat never completed "
2797 " while polling during I/O "
2798 " timeout handling for "
2799 "scsi%d.\n",
2800 instance->host->host_no);
2801 *convert = 1;
2802 retval = 1;
2803 goto out;
2804 }
2805 }
2806 }
2807
2808 outstanding = atomic_read(&instance->fw_outstanding);
2809 if (!outstanding)
2810 goto out;
2811
2812 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2813 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2814 "commands to complete for scsi%d\n", i,
2815 outstanding, instance->host->host_no);
2816 megasas_complete_cmd_dpc_fusion(
2817 (unsigned long)instance);
2818 }
2819 msleep(1000);
2820 }
2821
2822 if (atomic_read(&instance->fw_outstanding)) {
2823 dev_err(&instance->pdev->dev, "pending commands remain after waiting, "
2824 "will reset adapter scsi%d.\n",
2825 instance->host->host_no);
2826 retval = 1;
2827 }
2828 out:
2829 return retval;
2830 }
2831
2832 void megasas_reset_reply_desc(struct megasas_instance *instance)
2833 {
2834 int i, j, count;
2835 struct fusion_context *fusion;
2836 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
2837
2838 fusion = instance->ctrl_context;
2839 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
2840 for (i = 0 ; i < count ; i++) {
2841 fusion->last_reply_idx[i] = 0;
2842 reply_desc = fusion->reply_frames_desc[i];
2843 for (j = 0 ; j < fusion->reply_q_depth; j++, reply_desc++)
2844 reply_desc->Words = cpu_to_le64(ULLONG_MAX);
2845 }
2846 }
2847
2848 /*
2849 * megasas_refire_mgmt_cmd : Re-fire management commands
2850 * @instance: Controller's soft instance
2851 */
2852 void megasas_refire_mgmt_cmd(struct megasas_instance *instance)
2853 {
2854 int j;
2855 struct megasas_cmd_fusion *cmd_fusion;
2856 struct fusion_context *fusion;
2857 struct megasas_cmd *cmd_mfi;
2858 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2859 u16 smid;
2860 bool refire_cmd = 0;
2861
2862 fusion = instance->ctrl_context;
2863
2864 /* Re-fire management commands.
2865 * Do not traverse complet MPT frame pool. Start from max_scsi_cmds.
2866 */
2867 for (j = instance->max_scsi_cmds ; j < instance->max_fw_cmds; j++) {
2868 cmd_fusion = fusion->cmd_list[j];
2869 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
2870 smid = le16_to_cpu(cmd_mfi->context.smid);
2871
2872 if (!smid)
2873 continue;
2874 req_desc = megasas_get_request_descriptor
2875 (instance, smid - 1);
2876 refire_cmd = req_desc && ((cmd_mfi->frame->dcmd.opcode !=
2877 cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO)) &&
2878 (cmd_mfi->frame->dcmd.opcode !=
2879 cpu_to_le32(MR_DCMD_SYSTEM_PD_MAP_GET_INFO)))
2880 && !(cmd_mfi->flags & DRV_DCMD_SKIP_REFIRE);
2881 if (refire_cmd)
2882 megasas_fire_cmd_fusion(instance, req_desc);
2883 else
2884 megasas_return_cmd(instance, cmd_mfi);
2885 }
2886 }
2887
2888 /*
2889 * megasas_track_scsiio : Track SCSI IOs outstanding to a SCSI device
2890 * @instance: per adapter struct
2891 * @channel: the channel assigned by the OS
2892 * @id: the id assigned by the OS
2893 *
2894 * Returns SUCCESS if no IOs pending to SCSI device, else return FAILED
2895 */
2896
2897 static int megasas_track_scsiio(struct megasas_instance *instance,
2898 int id, int channel)
2899 {
2900 int i, found = 0;
2901 struct megasas_cmd_fusion *cmd_fusion;
2902 struct fusion_context *fusion;
2903 fusion = instance->ctrl_context;
2904
2905 for (i = 0 ; i < instance->max_scsi_cmds; i++) {
2906 cmd_fusion = fusion->cmd_list[i];
2907 if (cmd_fusion->scmd &&
2908 (cmd_fusion->scmd->device->id == id &&
2909 cmd_fusion->scmd->device->channel == channel)) {
2910 dev_info(&instance->pdev->dev,
2911 "SCSI commands pending to target"
2912 "channel %d id %d \tSMID: 0x%x\n",
2913 channel, id, cmd_fusion->index);
2914 scsi_print_command(cmd_fusion->scmd);
2915 found = 1;
2916 break;
2917 }
2918 }
2919
2920 return found ? FAILED : SUCCESS;
2921 }
2922
2923 /**
2924 * megasas_tm_response_code - translation of device response code
2925 * @ioc: per adapter object
2926 * @mpi_reply: MPI reply returned by firmware
2927 *
2928 * Return nothing.
2929 */
2930 static void
2931 megasas_tm_response_code(struct megasas_instance *instance,
2932 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply)
2933 {
2934 char *desc;
2935
2936 switch (mpi_reply->ResponseCode) {
2937 case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE:
2938 desc = "task management request completed";
2939 break;
2940 case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME:
2941 desc = "invalid frame";
2942 break;
2943 case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED:
2944 desc = "task management request not supported";
2945 break;
2946 case MPI2_SCSITASKMGMT_RSP_TM_FAILED:
2947 desc = "task management request failed";
2948 break;
2949 case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED:
2950 desc = "task management request succeeded";
2951 break;
2952 case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN:
2953 desc = "invalid lun";
2954 break;
2955 case 0xA:
2956 desc = "overlapped tag attempted";
2957 break;
2958 case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC:
2959 desc = "task queued, however not sent to target";
2960 break;
2961 default:
2962 desc = "unknown";
2963 break;
2964 }
2965 dev_dbg(&instance->pdev->dev, "response_code(%01x): %s\n",
2966 mpi_reply->ResponseCode, desc);
2967 dev_dbg(&instance->pdev->dev,
2968 "TerminationCount/DevHandle/Function/TaskType/IOCStat/IOCLoginfo"
2969 " 0x%x/0x%x/0x%x/0x%x/0x%x/0x%x\n",
2970 mpi_reply->TerminationCount, mpi_reply->DevHandle,
2971 mpi_reply->Function, mpi_reply->TaskType,
2972 mpi_reply->IOCStatus, mpi_reply->IOCLogInfo);
2973 }
2974
2975 /**
2976 * megasas_issue_tm - main routine for sending tm requests
2977 * @instance: per adapter struct
2978 * @device_handle: device handle
2979 * @channel: the channel assigned by the OS
2980 * @id: the id assigned by the OS
2981 * @type: MPI2_SCSITASKMGMT_TASKTYPE__XXX (defined in megaraid_sas_fusion.c)
2982 * @smid_task: smid assigned to the task
2983 * @m_type: TM_MUTEX_ON or TM_MUTEX_OFF
2984 * Context: user
2985 *
2986 * MegaRaid use MPT interface for Task Magement request.
2987 * A generic API for sending task management requests to firmware.
2988 *
2989 * Return SUCCESS or FAILED.
2990 */
2991 static int
2992 megasas_issue_tm(struct megasas_instance *instance, u16 device_handle,
2993 uint channel, uint id, u16 smid_task, u8 type)
2994 {
2995 struct MR_TASK_MANAGE_REQUEST *mr_request;
2996 struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_request;
2997 unsigned long timeleft;
2998 struct megasas_cmd_fusion *cmd_fusion;
2999 struct megasas_cmd *cmd_mfi;
3000 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3001 struct fusion_context *fusion;
3002 struct megasas_cmd_fusion *scsi_lookup;
3003 int rc;
3004 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply;
3005
3006 fusion = instance->ctrl_context;
3007
3008 cmd_mfi = megasas_get_cmd(instance);
3009
3010 if (!cmd_mfi) {
3011 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
3012 __func__, __LINE__);
3013 return -ENOMEM;
3014 }
3015
3016 cmd_fusion = megasas_get_cmd_fusion(instance,
3017 instance->max_scsi_cmds + cmd_mfi->index);
3018
3019 /* Save the smid. To be used for returning the cmd */
3020 cmd_mfi->context.smid = cmd_fusion->index;
3021
3022 req_desc = megasas_get_request_descriptor(instance,
3023 (cmd_fusion->index - 1));
3024 if (!req_desc) {
3025 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
3026 __func__, __LINE__);
3027 megasas_return_cmd(instance, cmd_mfi);
3028 return -ENOMEM;
3029 }
3030
3031 cmd_fusion->request_desc = req_desc;
3032 req_desc->Words = 0;
3033
3034 scsi_lookup = fusion->cmd_list[smid_task - 1];
3035
3036 mr_request = (struct MR_TASK_MANAGE_REQUEST *) cmd_fusion->io_request;
3037 memset(mr_request, 0, sizeof(struct MR_TASK_MANAGE_REQUEST));
3038 mpi_request = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) &mr_request->TmRequest;
3039 mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
3040 mpi_request->DevHandle = cpu_to_le16(device_handle);
3041 mpi_request->TaskType = type;
3042 mpi_request->TaskMID = cpu_to_le16(smid_task);
3043 mpi_request->LUN[1] = 0;
3044
3045
3046 req_desc = cmd_fusion->request_desc;
3047 req_desc->HighPriority.SMID = cpu_to_le16(cmd_fusion->index);
3048 req_desc->HighPriority.RequestFlags =
3049 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
3050 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3051 req_desc->HighPriority.MSIxIndex = 0;
3052 req_desc->HighPriority.LMID = 0;
3053 req_desc->HighPriority.Reserved1 = 0;
3054
3055 if (channel < MEGASAS_MAX_PD_CHANNELS)
3056 mr_request->tmReqFlags.isTMForPD = 1;
3057 else
3058 mr_request->tmReqFlags.isTMForLD = 1;
3059
3060 init_completion(&cmd_fusion->done);
3061 megasas_fire_cmd_fusion(instance, req_desc);
3062
3063 timeleft = wait_for_completion_timeout(&cmd_fusion->done, 50 * HZ);
3064
3065 if (!timeleft) {
3066 dev_err(&instance->pdev->dev,
3067 "task mgmt type 0x%x timed out\n", type);
3068 cmd_mfi->flags |= DRV_DCMD_SKIP_REFIRE;
3069 mutex_unlock(&instance->reset_mutex);
3070 rc = megasas_reset_fusion(instance->host, MFI_IO_TIMEOUT_OCR);
3071 mutex_lock(&instance->reset_mutex);
3072 return rc;
3073 }
3074
3075 mpi_reply = (struct MPI2_SCSI_TASK_MANAGE_REPLY *) &mr_request->TMReply;
3076 megasas_tm_response_code(instance, mpi_reply);
3077
3078 megasas_return_cmd(instance, cmd_mfi);
3079 rc = SUCCESS;
3080 switch (type) {
3081 case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
3082 if (scsi_lookup->scmd == NULL)
3083 break;
3084 else {
3085 instance->instancet->disable_intr(instance);
3086 msleep(1000);
3087 megasas_complete_cmd_dpc_fusion
3088 ((unsigned long)instance);
3089 instance->instancet->enable_intr(instance);
3090 if (scsi_lookup->scmd == NULL)
3091 break;
3092 }
3093 rc = FAILED;
3094 break;
3095
3096 case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
3097 if ((channel == 0xFFFFFFFF) && (id == 0xFFFFFFFF))
3098 break;
3099 instance->instancet->disable_intr(instance);
3100 msleep(1000);
3101 megasas_complete_cmd_dpc_fusion
3102 ((unsigned long)instance);
3103 rc = megasas_track_scsiio(instance, id, channel);
3104 instance->instancet->enable_intr(instance);
3105
3106 break;
3107 case MPI2_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET:
3108 case MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK:
3109 break;
3110 default:
3111 rc = FAILED;
3112 break;
3113 }
3114
3115 return rc;
3116
3117 }
3118
3119 /*
3120 * megasas_fusion_smid_lookup : Look for fusion command correpspodning to SCSI
3121 * @instance: per adapter struct
3122 *
3123 * Return Non Zero index, if SMID found in outstanding commands
3124 */
3125 static u16 megasas_fusion_smid_lookup(struct scsi_cmnd *scmd)
3126 {
3127 int i, ret = 0;
3128 struct megasas_instance *instance;
3129 struct megasas_cmd_fusion *cmd_fusion;
3130 struct fusion_context *fusion;
3131
3132 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3133
3134 fusion = instance->ctrl_context;
3135
3136 for (i = 0; i < instance->max_scsi_cmds; i++) {
3137 cmd_fusion = fusion->cmd_list[i];
3138 if (cmd_fusion->scmd && (cmd_fusion->scmd == scmd)) {
3139 scmd_printk(KERN_NOTICE, scmd, "Abort request is for"
3140 " SMID: %d\n", cmd_fusion->index);
3141 ret = cmd_fusion->index;
3142 break;
3143 }
3144 }
3145
3146 return ret;
3147 }
3148
3149 /*
3150 * megasas_get_tm_devhandle - Get devhandle for TM request
3151 * @sdev- OS provided scsi device
3152 *
3153 * Returns- devhandle/targetID of SCSI device
3154 */
3155 static u16 megasas_get_tm_devhandle(struct scsi_device *sdev)
3156 {
3157 u16 pd_index = 0;
3158 u32 device_id;
3159 struct megasas_instance *instance;
3160 struct fusion_context *fusion;
3161 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
3162 u16 devhandle = (u16)ULONG_MAX;
3163
3164 instance = (struct megasas_instance *)sdev->host->hostdata;
3165 fusion = instance->ctrl_context;
3166
3167 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS) {
3168 if (instance->use_seqnum_jbod_fp) {
3169 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
3170 sdev->id;
3171 pd_sync = (void *)fusion->pd_seq_sync
3172 [(instance->pd_seq_map_id - 1) & 1];
3173 devhandle = pd_sync->seq[pd_index].devHandle;
3174 } else
3175 sdev_printk(KERN_ERR, sdev, "Firmware expose tmCapable"
3176 " without JBOD MAP support from %s %d\n", __func__, __LINE__);
3177 } else {
3178 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
3179 + sdev->id;
3180 devhandle = device_id;
3181 }
3182
3183 return devhandle;
3184 }
3185
3186 /*
3187 * megasas_task_abort_fusion : SCSI task abort function for fusion adapters
3188 * @scmd : pointer to scsi command object
3189 *
3190 * Return SUCCESS, if command aborted else FAILED
3191 */
3192
3193 int megasas_task_abort_fusion(struct scsi_cmnd *scmd)
3194 {
3195 struct megasas_instance *instance;
3196 u16 smid, devhandle;
3197 struct fusion_context *fusion;
3198 int ret;
3199 struct MR_PRIV_DEVICE *mr_device_priv_data;
3200 mr_device_priv_data = scmd->device->hostdata;
3201
3202
3203 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3204 fusion = instance->ctrl_context;
3205
3206 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
3207 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL,"
3208 "SCSI host:%d\n", instance->host->host_no);
3209 ret = FAILED;
3210 return ret;
3211 }
3212
3213 if (!mr_device_priv_data) {
3214 sdev_printk(KERN_INFO, scmd->device, "device been deleted! "
3215 "scmd(%p)\n", scmd);
3216 scmd->result = DID_NO_CONNECT << 16;
3217 ret = SUCCESS;
3218 goto out;
3219 }
3220
3221
3222 if (!mr_device_priv_data->is_tm_capable) {
3223 ret = FAILED;
3224 goto out;
3225 }
3226
3227 mutex_lock(&instance->reset_mutex);
3228
3229 smid = megasas_fusion_smid_lookup(scmd);
3230
3231 if (!smid) {
3232 ret = SUCCESS;
3233 scmd_printk(KERN_NOTICE, scmd, "Command for which abort is"
3234 " issued is not found in oustanding commands\n");
3235 mutex_unlock(&instance->reset_mutex);
3236 goto out;
3237 }
3238
3239 devhandle = megasas_get_tm_devhandle(scmd->device);
3240
3241 if (devhandle == (u16)ULONG_MAX) {
3242 ret = SUCCESS;
3243 sdev_printk(KERN_INFO, scmd->device,
3244 "task abort issued for invalid devhandle\n");
3245 mutex_unlock(&instance->reset_mutex);
3246 goto out;
3247 }
3248 sdev_printk(KERN_INFO, scmd->device,
3249 "attempting task abort! scmd(%p) tm_dev_handle 0x%x\n",
3250 scmd, devhandle);
3251
3252 mr_device_priv_data->tm_busy = 1;
3253 ret = megasas_issue_tm(instance, devhandle,
3254 scmd->device->channel, scmd->device->id, smid,
3255 MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK);
3256 mr_device_priv_data->tm_busy = 0;
3257
3258 mutex_unlock(&instance->reset_mutex);
3259 out:
3260 sdev_printk(KERN_INFO, scmd->device, "task abort: %s scmd(%p)\n",
3261 ((ret == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
3262
3263 return ret;
3264 }
3265
3266 /*
3267 * megasas_reset_target_fusion : target reset function for fusion adapters
3268 * scmd: SCSI command pointer
3269 *
3270 * Returns SUCCESS if all commands associated with target aborted else FAILED
3271 */
3272
3273 int megasas_reset_target_fusion(struct scsi_cmnd *scmd)
3274 {
3275
3276 struct megasas_instance *instance;
3277 int ret = FAILED;
3278 u16 devhandle;
3279 struct fusion_context *fusion;
3280 struct MR_PRIV_DEVICE *mr_device_priv_data;
3281 mr_device_priv_data = scmd->device->hostdata;
3282
3283 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3284 fusion = instance->ctrl_context;
3285
3286 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
3287 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL,"
3288 "SCSI host:%d\n", instance->host->host_no);
3289 ret = FAILED;
3290 return ret;
3291 }
3292
3293 if (!mr_device_priv_data) {
3294 sdev_printk(KERN_INFO, scmd->device, "device been deleted! "
3295 "scmd(%p)\n", scmd);
3296 scmd->result = DID_NO_CONNECT << 16;
3297 ret = SUCCESS;
3298 goto out;
3299 }
3300
3301
3302 if (!mr_device_priv_data->is_tm_capable) {
3303 ret = FAILED;
3304 goto out;
3305 }
3306
3307 mutex_lock(&instance->reset_mutex);
3308 devhandle = megasas_get_tm_devhandle(scmd->device);
3309
3310 if (devhandle == (u16)ULONG_MAX) {
3311 ret = SUCCESS;
3312 sdev_printk(KERN_INFO, scmd->device,
3313 "target reset issued for invalid devhandle\n");
3314 mutex_unlock(&instance->reset_mutex);
3315 goto out;
3316 }
3317
3318 sdev_printk(KERN_INFO, scmd->device,
3319 "attempting target reset! scmd(%p) tm_dev_handle 0x%x\n",
3320 scmd, devhandle);
3321 mr_device_priv_data->tm_busy = 1;
3322 ret = megasas_issue_tm(instance, devhandle,
3323 scmd->device->channel, scmd->device->id, 0,
3324 MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET);
3325 mr_device_priv_data->tm_busy = 0;
3326 mutex_unlock(&instance->reset_mutex);
3327 out:
3328 scmd_printk(KERN_NOTICE, scmd, "megasas: target reset %s!!\n",
3329 (ret == SUCCESS) ? "SUCCESS" : "FAILED");
3330
3331 return ret;
3332 }
3333
3334 /*SRIOV get other instance in cluster if any*/
3335 struct megasas_instance *megasas_get_peer_instance(struct megasas_instance *instance)
3336 {
3337 int i;
3338
3339 for (i = 0; i < MAX_MGMT_ADAPTERS; i++) {
3340 if (megasas_mgmt_info.instance[i] &&
3341 (megasas_mgmt_info.instance[i] != instance) &&
3342 megasas_mgmt_info.instance[i]->requestorId &&
3343 megasas_mgmt_info.instance[i]->peerIsPresent &&
3344 (memcmp((megasas_mgmt_info.instance[i]->clusterId),
3345 instance->clusterId, MEGASAS_CLUSTER_ID_SIZE) == 0))
3346 return megasas_mgmt_info.instance[i];
3347 }
3348 return NULL;
3349 }
3350
3351 /* Check for a second path that is currently UP */
3352 int megasas_check_mpio_paths(struct megasas_instance *instance,
3353 struct scsi_cmnd *scmd)
3354 {
3355 struct megasas_instance *peer_instance = NULL;
3356 int retval = (DID_RESET << 16);
3357
3358 if (instance->peerIsPresent) {
3359 peer_instance = megasas_get_peer_instance(instance);
3360 if ((peer_instance) &&
3361 (atomic_read(&peer_instance->adprecovery) ==
3362 MEGASAS_HBA_OPERATIONAL))
3363 retval = (DID_NO_CONNECT << 16);
3364 }
3365 return retval;
3366 }
3367
3368 /* Core fusion reset function */
3369 int megasas_reset_fusion(struct Scsi_Host *shost, int reason)
3370 {
3371 int retval = SUCCESS, i, convert = 0;
3372 struct megasas_instance *instance;
3373 struct megasas_cmd_fusion *cmd_fusion;
3374 struct fusion_context *fusion;
3375 u32 abs_state, status_reg, reset_adapter;
3376 u32 io_timeout_in_crash_mode = 0;
3377 struct scsi_cmnd *scmd_local = NULL;
3378 struct scsi_device *sdev;
3379
3380 instance = (struct megasas_instance *)shost->hostdata;
3381 fusion = instance->ctrl_context;
3382
3383 mutex_lock(&instance->reset_mutex);
3384
3385 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
3386 dev_warn(&instance->pdev->dev, "Hardware critical error, "
3387 "returning FAILED for scsi%d.\n",
3388 instance->host->host_no);
3389 mutex_unlock(&instance->reset_mutex);
3390 return FAILED;
3391 }
3392 status_reg = instance->instancet->read_fw_status_reg(instance->reg_set);
3393 abs_state = status_reg & MFI_STATE_MASK;
3394
3395 /* IO timeout detected, forcibly put FW in FAULT state */
3396 if (abs_state != MFI_STATE_FAULT && instance->crash_dump_buf &&
3397 instance->crash_dump_app_support && reason) {
3398 dev_info(&instance->pdev->dev, "IO/DCMD timeout is detected, "
3399 "forcibly FAULT Firmware\n");
3400 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
3401 status_reg = readl(&instance->reg_set->doorbell);
3402 writel(status_reg | MFI_STATE_FORCE_OCR,
3403 &instance->reg_set->doorbell);
3404 readl(&instance->reg_set->doorbell);
3405 mutex_unlock(&instance->reset_mutex);
3406 do {
3407 ssleep(3);
3408 io_timeout_in_crash_mode++;
3409 dev_dbg(&instance->pdev->dev, "waiting for [%d] "
3410 "seconds for crash dump collection and OCR "
3411 "to be done\n", (io_timeout_in_crash_mode * 3));
3412 } while ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
3413 (io_timeout_in_crash_mode < 80));
3414
3415 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) {
3416 dev_info(&instance->pdev->dev, "OCR done for IO "
3417 "timeout case\n");
3418 retval = SUCCESS;
3419 } else {
3420 dev_info(&instance->pdev->dev, "Controller is not "
3421 "operational after 240 seconds wait for IO "
3422 "timeout case in FW crash dump mode\n do "
3423 "OCR/kill adapter\n");
3424 retval = megasas_reset_fusion(shost, 0);
3425 }
3426 return retval;
3427 }
3428
3429 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
3430 del_timer_sync(&instance->sriov_heartbeat_timer);
3431 set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
3432 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_POLLING);
3433 instance->instancet->disable_intr(instance);
3434 msleep(1000);
3435
3436 /* First try waiting for commands to complete */
3437 if (megasas_wait_for_outstanding_fusion(instance, reason,
3438 &convert)) {
3439 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
3440 dev_warn(&instance->pdev->dev, "resetting fusion "
3441 "adapter scsi%d.\n", instance->host->host_no);
3442 if (convert)
3443 reason = 0;
3444
3445 /* Now return commands back to the OS */
3446 for (i = 0 ; i < instance->max_scsi_cmds; i++) {
3447 cmd_fusion = fusion->cmd_list[i];
3448 scmd_local = cmd_fusion->scmd;
3449 if (cmd_fusion->scmd) {
3450 scmd_local->result =
3451 megasas_check_mpio_paths(instance,
3452 scmd_local);
3453 if (megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)
3454 atomic_dec(&instance->ldio_outstanding);
3455 megasas_return_cmd_fusion(instance, cmd_fusion);
3456 scsi_dma_unmap(scmd_local);
3457 scmd_local->scsi_done(scmd_local);
3458 atomic_dec(&instance->fw_outstanding);
3459 }
3460 }
3461
3462 status_reg = instance->instancet->read_fw_status_reg(
3463 instance->reg_set);
3464 abs_state = status_reg & MFI_STATE_MASK;
3465 reset_adapter = status_reg & MFI_RESET_ADAPTER;
3466 if (instance->disableOnlineCtrlReset ||
3467 (abs_state == MFI_STATE_FAULT && !reset_adapter)) {
3468 /* Reset not supported, kill adapter */
3469 dev_warn(&instance->pdev->dev, "Reset not supported"
3470 ", killing adapter scsi%d.\n",
3471 instance->host->host_no);
3472 megaraid_sas_kill_hba(instance);
3473 instance->skip_heartbeat_timer_del = 1;
3474 retval = FAILED;
3475 goto out;
3476 }
3477
3478 /* Let SR-IOV VF & PF sync up if there was a HB failure */
3479 if (instance->requestorId && !reason) {
3480 msleep(MEGASAS_OCR_SETTLE_TIME_VF);
3481 goto transition_to_ready;
3482 }
3483
3484 /* Now try to reset the chip */
3485 for (i = 0; i < MEGASAS_FUSION_MAX_RESET_TRIES; i++) {
3486
3487 if (instance->instancet->adp_reset
3488 (instance, instance->reg_set))
3489 continue;
3490 transition_to_ready:
3491 /* Wait for FW to become ready */
3492 if (megasas_transition_to_ready(instance, 1)) {
3493 dev_warn(&instance->pdev->dev,
3494 "Failed to transition controller to ready for "
3495 "scsi%d.\n", instance->host->host_no);
3496 if (instance->requestorId && !reason)
3497 goto fail_kill_adapter;
3498 else
3499 continue;
3500 }
3501 megasas_reset_reply_desc(instance);
3502 megasas_fusion_update_can_queue(instance, OCR_CONTEXT);
3503
3504 if (megasas_ioc_init_fusion(instance)) {
3505 dev_warn(&instance->pdev->dev,
3506 "megasas_ioc_init_fusion() failed! for "
3507 "scsi%d\n", instance->host->host_no);
3508 if (instance->requestorId && !reason)
3509 goto fail_kill_adapter;
3510 else
3511 continue;
3512 }
3513
3514 megasas_refire_mgmt_cmd(instance);
3515
3516 if (megasas_get_ctrl_info(instance)) {
3517 dev_info(&instance->pdev->dev,
3518 "Failed from %s %d\n",
3519 __func__, __LINE__);
3520 megaraid_sas_kill_hba(instance);
3521 retval = FAILED;
3522 }
3523 /* Reset load balance info */
3524 memset(fusion->load_balance_info, 0,
3525 sizeof(struct LD_LOAD_BALANCE_INFO)
3526 *MAX_LOGICAL_DRIVES_EXT);
3527
3528 if (!megasas_get_map_info(instance))
3529 megasas_sync_map_info(instance);
3530
3531 megasas_setup_jbod_map(instance);
3532
3533 shost_for_each_device(sdev, shost)
3534 megasas_update_sdev_properties(sdev);
3535
3536 clear_bit(MEGASAS_FUSION_IN_RESET,
3537 &instance->reset_flags);
3538 instance->instancet->enable_intr(instance);
3539 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
3540
3541 /* Restart SR-IOV heartbeat */
3542 if (instance->requestorId) {
3543 if (!megasas_sriov_start_heartbeat(instance, 0))
3544 megasas_start_timer(instance,
3545 &instance->sriov_heartbeat_timer,
3546 megasas_sriov_heartbeat_handler,
3547 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
3548 else
3549 instance->skip_heartbeat_timer_del = 1;
3550 }
3551
3552 /* Adapter reset completed successfully */
3553 dev_warn(&instance->pdev->dev, "Reset "
3554 "successful for scsi%d.\n",
3555 instance->host->host_no);
3556
3557 if (instance->crash_dump_drv_support &&
3558 instance->crash_dump_app_support)
3559 megasas_set_crash_dump_params(instance,
3560 MR_CRASH_BUF_TURN_ON);
3561 else
3562 megasas_set_crash_dump_params(instance,
3563 MR_CRASH_BUF_TURN_OFF);
3564
3565 retval = SUCCESS;
3566 goto out;
3567 }
3568 fail_kill_adapter:
3569 /* Reset failed, kill the adapter */
3570 dev_warn(&instance->pdev->dev, "Reset failed, killing "
3571 "adapter scsi%d.\n", instance->host->host_no);
3572 megaraid_sas_kill_hba(instance);
3573 instance->skip_heartbeat_timer_del = 1;
3574 retval = FAILED;
3575 } else {
3576 /* For VF: Restart HB timer if we didn't OCR */
3577 if (instance->requestorId) {
3578 megasas_start_timer(instance,
3579 &instance->sriov_heartbeat_timer,
3580 megasas_sriov_heartbeat_handler,
3581 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
3582 }
3583 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
3584 instance->instancet->enable_intr(instance);
3585 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
3586 }
3587 out:
3588 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
3589 mutex_unlock(&instance->reset_mutex);
3590 return retval;
3591 }
3592
3593 /* Fusion Crash dump collection work queue */
3594 void megasas_fusion_crash_dump_wq(struct work_struct *work)
3595 {
3596 struct megasas_instance *instance =
3597 container_of(work, struct megasas_instance, crash_init);
3598 u32 status_reg;
3599 u8 partial_copy = 0;
3600
3601
3602 status_reg = instance->instancet->read_fw_status_reg(instance->reg_set);
3603
3604 /*
3605 * Allocate host crash buffers to copy data from 1 MB DMA crash buffer
3606 * to host crash buffers
3607 */
3608 if (instance->drv_buf_index == 0) {
3609 /* Buffer is already allocated for old Crash dump.
3610 * Do OCR and do not wait for crash dump collection
3611 */
3612 if (instance->drv_buf_alloc) {
3613 dev_info(&instance->pdev->dev, "earlier crash dump is "
3614 "not yet copied by application, ignoring this "
3615 "crash dump and initiating OCR\n");
3616 status_reg |= MFI_STATE_CRASH_DUMP_DONE;
3617 writel(status_reg,
3618 &instance->reg_set->outbound_scratch_pad);
3619 readl(&instance->reg_set->outbound_scratch_pad);
3620 return;
3621 }
3622 megasas_alloc_host_crash_buffer(instance);
3623 dev_info(&instance->pdev->dev, "Number of host crash buffers "
3624 "allocated: %d\n", instance->drv_buf_alloc);
3625 }
3626
3627 /*
3628 * Driver has allocated max buffers, which can be allocated
3629 * and FW has more crash dump data, then driver will
3630 * ignore the data.
3631 */
3632 if (instance->drv_buf_index >= (instance->drv_buf_alloc)) {
3633 dev_info(&instance->pdev->dev, "Driver is done copying "
3634 "the buffer: %d\n", instance->drv_buf_alloc);
3635 status_reg |= MFI_STATE_CRASH_DUMP_DONE;
3636 partial_copy = 1;
3637 } else {
3638 memcpy(instance->crash_buf[instance->drv_buf_index],
3639 instance->crash_dump_buf, CRASH_DMA_BUF_SIZE);
3640 instance->drv_buf_index++;
3641 status_reg &= ~MFI_STATE_DMADONE;
3642 }
3643
3644 if (status_reg & MFI_STATE_CRASH_DUMP_DONE) {
3645 dev_info(&instance->pdev->dev, "Crash Dump is available,number "
3646 "of copied buffers: %d\n", instance->drv_buf_index);
3647 instance->fw_crash_buffer_size = instance->drv_buf_index;
3648 instance->fw_crash_state = AVAILABLE;
3649 instance->drv_buf_index = 0;
3650 writel(status_reg, &instance->reg_set->outbound_scratch_pad);
3651 readl(&instance->reg_set->outbound_scratch_pad);
3652 if (!partial_copy)
3653 megasas_reset_fusion(instance->host, 0);
3654 } else {
3655 writel(status_reg, &instance->reg_set->outbound_scratch_pad);
3656 readl(&instance->reg_set->outbound_scratch_pad);
3657 }
3658 }
3659
3660
3661 /* Fusion OCR work queue */
3662 void megasas_fusion_ocr_wq(struct work_struct *work)
3663 {
3664 struct megasas_instance *instance =
3665 container_of(work, struct megasas_instance, work_init);
3666
3667 megasas_reset_fusion(instance->host, 0);
3668 }
3669
3670 struct megasas_instance_template megasas_instance_template_fusion = {
3671 .enable_intr = megasas_enable_intr_fusion,
3672 .disable_intr = megasas_disable_intr_fusion,
3673 .clear_intr = megasas_clear_intr_fusion,
3674 .read_fw_status_reg = megasas_read_fw_status_reg_fusion,
3675 .adp_reset = megasas_adp_reset_fusion,
3676 .check_reset = megasas_check_reset_fusion,
3677 .service_isr = megasas_isr_fusion,
3678 .tasklet = megasas_complete_cmd_dpc_fusion,
3679 .init_adapter = megasas_init_adapter_fusion,
3680 .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion,
3681 .issue_dcmd = megasas_issue_dcmd_fusion,
3682 };
(deprecated) Btrfs devel tree