9c915a8c |
1 | /* |
2 | * Linux MegaRAID driver for SAS based RAID controllers |
3 | * |
4 | * Copyright (c) 2009-2011 LSI Corporation. |
5 | * |
6 | * This program is free software; you can redistribute it and/or |
7 | * modify it under the terms of the GNU General Public License |
8 | * as published by the Free Software Foundation; either version 2 |
9 | * of the License, or (at your option) any later version. |
10 | * |
11 | * This program is distributed in the hope that it will be useful, |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | * GNU General Public License for more details. |
15 | * |
16 | * You should have received a copy of the GNU General Public License |
17 | * along with this program; if not, write to the Free Software |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
19 | * |
20 | * FILE: megaraid_sas_fusion.c |
21 | * |
22 | * Authors: LSI Corporation |
23 | * Sumant Patro |
24 | * Adam Radford <linuxraid@lsi.com> |
25 | * |
26 | * Send feedback to: <megaraidlinux@lsi.com> |
27 | * |
28 | * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035 |
29 | * ATTN: Linuxraid |
30 | */ |
31 | |
32 | #include <linux/kernel.h> |
33 | #include <linux/types.h> |
34 | #include <linux/pci.h> |
35 | #include <linux/list.h> |
36 | #include <linux/moduleparam.h> |
37 | #include <linux/module.h> |
38 | #include <linux/spinlock.h> |
39 | #include <linux/interrupt.h> |
40 | #include <linux/delay.h> |
9c915a8c |
41 | #include <linux/uio.h> |
42 | #include <linux/uaccess.h> |
43 | #include <linux/fs.h> |
44 | #include <linux/compat.h> |
45 | #include <linux/blkdev.h> |
46 | #include <linux/mutex.h> |
47 | #include <linux/poll.h> |
48 | |
49 | #include <scsi/scsi.h> |
50 | #include <scsi/scsi_cmnd.h> |
51 | #include <scsi/scsi_device.h> |
52 | #include <scsi/scsi_host.h> |
53 | |
54 | #include "megaraid_sas_fusion.h" |
55 | #include "megaraid_sas.h" |
56 | |
57 | extern void megasas_free_cmds(struct megasas_instance *instance); |
58 | extern struct megasas_cmd *megasas_get_cmd(struct megasas_instance |
59 | *instance); |
60 | extern void |
61 | megasas_complete_cmd(struct megasas_instance *instance, |
62 | struct megasas_cmd *cmd, u8 alt_status); |
63 | int megasas_is_ldio(struct scsi_cmnd *cmd); |
64 | int |
65 | wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd); |
66 | |
67 | void |
68 | megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd); |
69 | int megasas_alloc_cmds(struct megasas_instance *instance); |
70 | int |
71 | megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs); |
72 | int |
73 | megasas_issue_polled(struct megasas_instance *instance, |
74 | struct megasas_cmd *cmd); |
75 | |
76 | u8 |
36807e67 |
77 | MR_BuildRaidContext(struct megasas_instance *instance, |
78 | struct IO_REQUEST_INFO *io_info, |
9c915a8c |
79 | struct RAID_CONTEXT *pRAID_Context, |
80 | struct MR_FW_RAID_MAP_ALL *map); |
81 | u16 MR_TargetIdToLdGet(u32 ldTgtId, struct MR_FW_RAID_MAP_ALL *map); |
82 | struct MR_LD_RAID *MR_LdRaidGet(u32 ld, struct MR_FW_RAID_MAP_ALL *map); |
83 | |
84 | u16 MR_GetLDTgtId(u32 ld, struct MR_FW_RAID_MAP_ALL *map); |
53ef2bbd |
85 | |
86 | void |
87 | megasas_check_and_restore_queue_depth(struct megasas_instance *instance); |
88 | |
9c915a8c |
89 | u8 MR_ValidateMapInfo(struct MR_FW_RAID_MAP_ALL *map, |
90 | struct LD_LOAD_BALANCE_INFO *lbInfo); |
91 | u16 get_updated_dev_handle(struct LD_LOAD_BALANCE_INFO *lbInfo, |
92 | struct IO_REQUEST_INFO *in_info); |
058a8fac |
93 | int megasas_transition_to_ready(struct megasas_instance *instance, int ocr); |
9c915a8c |
94 | void megaraid_sas_kill_hba(struct megasas_instance *instance); |
95 | |
96 | extern u32 megasas_dbg_lvl; |
97 | |
98 | /** |
99 | * megasas_enable_intr_fusion - Enables interrupts |
100 | * @regs: MFI register set |
101 | */ |
102 | void |
103 | megasas_enable_intr_fusion(struct megasas_register_set __iomem *regs) |
104 | { |
6497b247 |
105 | /* For Thunderbolt/Invader also clear intr on enable */ |
106 | writel(~0, ®s->outbound_intr_status); |
107 | readl(®s->outbound_intr_status); |
108 | |
9c915a8c |
109 | writel(~MFI_FUSION_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); |
110 | |
111 | /* Dummy readl to force pci flush */ |
112 | readl(®s->outbound_intr_mask); |
113 | } |
114 | |
115 | /** |
116 | * megasas_disable_intr_fusion - Disables interrupt |
117 | * @regs: MFI register set |
118 | */ |
119 | void |
120 | megasas_disable_intr_fusion(struct megasas_register_set __iomem *regs) |
121 | { |
122 | u32 mask = 0xFFFFFFFF; |
123 | u32 status; |
124 | |
125 | writel(mask, ®s->outbound_intr_mask); |
126 | /* Dummy readl to force pci flush */ |
127 | status = readl(®s->outbound_intr_mask); |
128 | } |
129 | |
130 | int |
131 | megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs) |
132 | { |
133 | u32 status; |
134 | /* |
135 | * Check if it is our interrupt |
136 | */ |
137 | status = readl(®s->outbound_intr_status); |
138 | |
139 | if (status & 1) { |
140 | writel(status, ®s->outbound_intr_status); |
141 | readl(®s->outbound_intr_status); |
142 | return 1; |
143 | } |
144 | if (!(status & MFI_FUSION_ENABLE_INTERRUPT_MASK)) |
145 | return 0; |
146 | |
9c915a8c |
147 | return 1; |
148 | } |
149 | |
150 | /** |
151 | * megasas_get_cmd_fusion - Get a command from the free pool |
152 | * @instance: Adapter soft state |
153 | * |
154 | * Returns a free command from the pool |
155 | */ |
156 | struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance |
157 | *instance) |
158 | { |
159 | unsigned long flags; |
160 | struct fusion_context *fusion = |
161 | (struct fusion_context *)instance->ctrl_context; |
162 | struct megasas_cmd_fusion *cmd = NULL; |
163 | |
164 | spin_lock_irqsave(&fusion->cmd_pool_lock, flags); |
165 | |
166 | if (!list_empty(&fusion->cmd_pool)) { |
167 | cmd = list_entry((&fusion->cmd_pool)->next, |
168 | struct megasas_cmd_fusion, list); |
169 | list_del_init(&cmd->list); |
170 | } else { |
171 | printk(KERN_ERR "megasas: Command pool (fusion) empty!\n"); |
172 | } |
173 | |
174 | spin_unlock_irqrestore(&fusion->cmd_pool_lock, flags); |
175 | return cmd; |
176 | } |
177 | |
178 | /** |
179 | * megasas_return_cmd_fusion - Return a cmd to free command pool |
180 | * @instance: Adapter soft state |
181 | * @cmd: Command packet to be returned to free command pool |
182 | */ |
183 | static inline void |
184 | megasas_return_cmd_fusion(struct megasas_instance *instance, |
185 | struct megasas_cmd_fusion *cmd) |
186 | { |
187 | unsigned long flags; |
188 | struct fusion_context *fusion = |
189 | (struct fusion_context *)instance->ctrl_context; |
190 | |
191 | spin_lock_irqsave(&fusion->cmd_pool_lock, flags); |
192 | |
193 | cmd->scmd = NULL; |
194 | cmd->sync_cmd_idx = (u32)ULONG_MAX; |
195 | list_add_tail(&cmd->list, &fusion->cmd_pool); |
196 | |
197 | spin_unlock_irqrestore(&fusion->cmd_pool_lock, flags); |
198 | } |
199 | |
200 | /** |
201 | * megasas_teardown_frame_pool_fusion - Destroy the cmd frame DMA pool |
202 | * @instance: Adapter soft state |
203 | */ |
204 | static void megasas_teardown_frame_pool_fusion( |
205 | struct megasas_instance *instance) |
206 | { |
207 | int i; |
208 | struct fusion_context *fusion = instance->ctrl_context; |
209 | |
210 | u16 max_cmd = instance->max_fw_cmds; |
211 | |
212 | struct megasas_cmd_fusion *cmd; |
213 | |
214 | if (!fusion->sg_dma_pool || !fusion->sense_dma_pool) { |
215 | printk(KERN_ERR "megasas: dma pool is null. SG Pool %p, " |
216 | "sense pool : %p\n", fusion->sg_dma_pool, |
217 | fusion->sense_dma_pool); |
218 | return; |
219 | } |
220 | |
221 | /* |
222 | * Return all frames to pool |
223 | */ |
224 | for (i = 0; i < max_cmd; i++) { |
225 | |
226 | cmd = fusion->cmd_list[i]; |
227 | |
228 | if (cmd->sg_frame) |
229 | pci_pool_free(fusion->sg_dma_pool, cmd->sg_frame, |
230 | cmd->sg_frame_phys_addr); |
231 | |
232 | if (cmd->sense) |
233 | pci_pool_free(fusion->sense_dma_pool, cmd->sense, |
234 | cmd->sense_phys_addr); |
235 | } |
236 | |
237 | /* |
238 | * Now destroy the pool itself |
239 | */ |
240 | pci_pool_destroy(fusion->sg_dma_pool); |
241 | pci_pool_destroy(fusion->sense_dma_pool); |
242 | |
243 | fusion->sg_dma_pool = NULL; |
244 | fusion->sense_dma_pool = NULL; |
245 | } |
246 | |
247 | /** |
248 | * megasas_free_cmds_fusion - Free all the cmds in the free cmd pool |
249 | * @instance: Adapter soft state |
250 | */ |
251 | void |
252 | megasas_free_cmds_fusion(struct megasas_instance *instance) |
253 | { |
254 | int i; |
255 | struct fusion_context *fusion = instance->ctrl_context; |
256 | |
257 | u32 max_cmds, req_sz, reply_sz, io_frames_sz; |
258 | |
259 | |
260 | req_sz = fusion->request_alloc_sz; |
261 | reply_sz = fusion->reply_alloc_sz; |
262 | io_frames_sz = fusion->io_frames_alloc_sz; |
263 | |
264 | max_cmds = instance->max_fw_cmds; |
265 | |
266 | /* Free descriptors and request Frames memory */ |
267 | if (fusion->req_frames_desc) |
268 | dma_free_coherent(&instance->pdev->dev, req_sz, |
269 | fusion->req_frames_desc, |
270 | fusion->req_frames_desc_phys); |
271 | |
272 | if (fusion->reply_frames_desc) { |
273 | pci_pool_free(fusion->reply_frames_desc_pool, |
274 | fusion->reply_frames_desc, |
275 | fusion->reply_frames_desc_phys); |
276 | pci_pool_destroy(fusion->reply_frames_desc_pool); |
277 | } |
278 | |
279 | if (fusion->io_request_frames) { |
280 | pci_pool_free(fusion->io_request_frames_pool, |
281 | fusion->io_request_frames, |
282 | fusion->io_request_frames_phys); |
283 | pci_pool_destroy(fusion->io_request_frames_pool); |
284 | } |
285 | |
286 | /* Free the Fusion frame pool */ |
287 | megasas_teardown_frame_pool_fusion(instance); |
288 | |
289 | /* Free all the commands in the cmd_list */ |
290 | for (i = 0; i < max_cmds; i++) |
291 | kfree(fusion->cmd_list[i]); |
292 | |
293 | /* Free the cmd_list buffer itself */ |
294 | kfree(fusion->cmd_list); |
295 | fusion->cmd_list = NULL; |
296 | |
297 | INIT_LIST_HEAD(&fusion->cmd_pool); |
298 | } |
299 | |
300 | /** |
301 | * megasas_create_frame_pool_fusion - Creates DMA pool for cmd frames |
302 | * @instance: Adapter soft state |
303 | * |
304 | */ |
305 | static int megasas_create_frame_pool_fusion(struct megasas_instance *instance) |
306 | { |
307 | int i; |
308 | u32 max_cmd; |
309 | struct fusion_context *fusion; |
310 | struct megasas_cmd_fusion *cmd; |
311 | u32 total_sz_chain_frame; |
312 | |
313 | fusion = instance->ctrl_context; |
314 | max_cmd = instance->max_fw_cmds; |
315 | |
316 | total_sz_chain_frame = MEGASAS_MAX_SZ_CHAIN_FRAME; |
317 | |
318 | /* |
319 | * Use DMA pool facility provided by PCI layer |
320 | */ |
321 | |
322 | fusion->sg_dma_pool = pci_pool_create("megasas sg pool fusion", |
323 | instance->pdev, |
324 | total_sz_chain_frame, 4, |
325 | 0); |
326 | if (!fusion->sg_dma_pool) { |
327 | printk(KERN_DEBUG "megasas: failed to setup request pool " |
328 | "fusion\n"); |
329 | return -ENOMEM; |
330 | } |
331 | fusion->sense_dma_pool = pci_pool_create("megasas sense pool fusion", |
332 | instance->pdev, |
333 | SCSI_SENSE_BUFFERSIZE, 64, 0); |
334 | |
335 | if (!fusion->sense_dma_pool) { |
336 | printk(KERN_DEBUG "megasas: failed to setup sense pool " |
337 | "fusion\n"); |
338 | pci_pool_destroy(fusion->sg_dma_pool); |
339 | fusion->sg_dma_pool = NULL; |
340 | return -ENOMEM; |
341 | } |
342 | |
343 | /* |
344 | * Allocate and attach a frame to each of the commands in cmd_list |
345 | */ |
346 | for (i = 0; i < max_cmd; i++) { |
347 | |
348 | cmd = fusion->cmd_list[i]; |
349 | |
350 | cmd->sg_frame = pci_pool_alloc(fusion->sg_dma_pool, |
351 | GFP_KERNEL, |
352 | &cmd->sg_frame_phys_addr); |
353 | |
354 | cmd->sense = pci_pool_alloc(fusion->sense_dma_pool, |
355 | GFP_KERNEL, &cmd->sense_phys_addr); |
356 | /* |
357 | * megasas_teardown_frame_pool_fusion() takes care of freeing |
358 | * whatever has been allocated |
359 | */ |
360 | if (!cmd->sg_frame || !cmd->sense) { |
361 | printk(KERN_DEBUG "megasas: pci_pool_alloc failed\n"); |
362 | megasas_teardown_frame_pool_fusion(instance); |
363 | return -ENOMEM; |
364 | } |
365 | } |
366 | return 0; |
367 | } |
368 | |
369 | /** |
370 | * megasas_alloc_cmds_fusion - Allocates the command packets |
371 | * @instance: Adapter soft state |
372 | * |
373 | * |
374 | * Each frame has a 32-bit field called context. This context is used to get |
375 | * back the megasas_cmd_fusion from the frame when a frame gets completed |
376 | * In this driver, the 32 bit values are the indices into an array cmd_list. |
377 | * This array is used only to look up the megasas_cmd_fusion given the context. |
378 | * The free commands themselves are maintained in a linked list called cmd_pool. |
379 | * |
380 | * cmds are formed in the io_request and sg_frame members of the |
381 | * megasas_cmd_fusion. The context field is used to get a request descriptor |
382 | * and is used as SMID of the cmd. |
383 | * SMID value range is from 1 to max_fw_cmds. |
384 | */ |
385 | int |
386 | megasas_alloc_cmds_fusion(struct megasas_instance *instance) |
387 | { |
c8e858fe |
388 | int i, j, count; |
9c915a8c |
389 | u32 max_cmd, io_frames_sz; |
390 | struct fusion_context *fusion; |
391 | struct megasas_cmd_fusion *cmd; |
392 | union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc; |
393 | u32 offset; |
394 | dma_addr_t io_req_base_phys; |
395 | u8 *io_req_base; |
396 | |
397 | fusion = instance->ctrl_context; |
398 | |
399 | max_cmd = instance->max_fw_cmds; |
400 | |
401 | fusion->req_frames_desc = |
402 | dma_alloc_coherent(&instance->pdev->dev, |
403 | fusion->request_alloc_sz, |
404 | &fusion->req_frames_desc_phys, GFP_KERNEL); |
405 | |
406 | if (!fusion->req_frames_desc) { |
407 | printk(KERN_ERR "megasas; Could not allocate memory for " |
408 | "request_frames\n"); |
409 | goto fail_req_desc; |
410 | } |
411 | |
c8e858fe |
412 | count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; |
9c915a8c |
413 | fusion->reply_frames_desc_pool = |
414 | pci_pool_create("reply_frames pool", instance->pdev, |
c8e858fe |
415 | fusion->reply_alloc_sz * count, 16, 0); |
9c915a8c |
416 | |
417 | if (!fusion->reply_frames_desc_pool) { |
418 | printk(KERN_ERR "megasas; Could not allocate memory for " |
419 | "reply_frame pool\n"); |
420 | goto fail_reply_desc; |
421 | } |
422 | |
423 | fusion->reply_frames_desc = |
424 | pci_pool_alloc(fusion->reply_frames_desc_pool, GFP_KERNEL, |
425 | &fusion->reply_frames_desc_phys); |
426 | if (!fusion->reply_frames_desc) { |
427 | printk(KERN_ERR "megasas; Could not allocate memory for " |
428 | "reply_frame pool\n"); |
429 | pci_pool_destroy(fusion->reply_frames_desc_pool); |
430 | goto fail_reply_desc; |
431 | } |
432 | |
433 | reply_desc = fusion->reply_frames_desc; |
c8e858fe |
434 | for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++) |
9c915a8c |
435 | reply_desc->Words = ULLONG_MAX; |
436 | |
437 | io_frames_sz = fusion->io_frames_alloc_sz; |
438 | |
439 | fusion->io_request_frames_pool = |
440 | pci_pool_create("io_request_frames pool", instance->pdev, |
441 | fusion->io_frames_alloc_sz, 16, 0); |
442 | |
443 | if (!fusion->io_request_frames_pool) { |
444 | printk(KERN_ERR "megasas: Could not allocate memory for " |
445 | "io_request_frame pool\n"); |
446 | goto fail_io_frames; |
447 | } |
448 | |
449 | fusion->io_request_frames = |
450 | pci_pool_alloc(fusion->io_request_frames_pool, GFP_KERNEL, |
451 | &fusion->io_request_frames_phys); |
452 | if (!fusion->io_request_frames) { |
453 | printk(KERN_ERR "megasas: Could not allocate memory for " |
454 | "io_request_frames frames\n"); |
455 | pci_pool_destroy(fusion->io_request_frames_pool); |
456 | goto fail_io_frames; |
457 | } |
458 | |
459 | /* |
460 | * fusion->cmd_list is an array of struct megasas_cmd_fusion pointers. |
461 | * Allocate the dynamic array first and then allocate individual |
462 | * commands. |
463 | */ |
464 | fusion->cmd_list = kmalloc(sizeof(struct megasas_cmd_fusion *) |
465 | *max_cmd, GFP_KERNEL); |
466 | |
467 | if (!fusion->cmd_list) { |
468 | printk(KERN_DEBUG "megasas: out of memory. Could not alloc " |
469 | "memory for cmd_list_fusion\n"); |
470 | goto fail_cmd_list; |
471 | } |
472 | |
473 | memset(fusion->cmd_list, 0, sizeof(struct megasas_cmd_fusion *) |
474 | *max_cmd); |
475 | |
476 | max_cmd = instance->max_fw_cmds; |
477 | for (i = 0; i < max_cmd; i++) { |
478 | fusion->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd_fusion), |
479 | GFP_KERNEL); |
480 | if (!fusion->cmd_list[i]) { |
481 | printk(KERN_ERR "Could not alloc cmd list fusion\n"); |
482 | |
483 | for (j = 0; j < i; j++) |
484 | kfree(fusion->cmd_list[j]); |
485 | |
486 | kfree(fusion->cmd_list); |
487 | fusion->cmd_list = NULL; |
488 | goto fail_cmd_list; |
489 | } |
490 | } |
491 | |
492 | /* The first 256 bytes (SMID 0) is not used. Don't add to cmd list */ |
493 | io_req_base = fusion->io_request_frames + |
494 | MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE; |
495 | io_req_base_phys = fusion->io_request_frames_phys + |
496 | MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE; |
497 | |
498 | /* |
499 | * Add all the commands to command pool (fusion->cmd_pool) |
500 | */ |
501 | |
502 | /* SMID 0 is reserved. Set SMID/index from 1 */ |
503 | for (i = 0; i < max_cmd; i++) { |
504 | cmd = fusion->cmd_list[i]; |
505 | offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i; |
506 | memset(cmd, 0, sizeof(struct megasas_cmd_fusion)); |
507 | cmd->index = i + 1; |
508 | cmd->scmd = NULL; |
509 | cmd->sync_cmd_idx = (u32)ULONG_MAX; /* Set to Invalid */ |
510 | cmd->instance = instance; |
511 | cmd->io_request = |
512 | (struct MPI2_RAID_SCSI_IO_REQUEST *) |
513 | (io_req_base + offset); |
514 | memset(cmd->io_request, 0, |
515 | sizeof(struct MPI2_RAID_SCSI_IO_REQUEST)); |
516 | cmd->io_request_phys_addr = io_req_base_phys + offset; |
517 | |
518 | list_add_tail(&cmd->list, &fusion->cmd_pool); |
519 | } |
520 | |
521 | /* |
522 | * Create a frame pool and assign one frame to each cmd |
523 | */ |
524 | if (megasas_create_frame_pool_fusion(instance)) { |
525 | printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n"); |
526 | megasas_free_cmds_fusion(instance); |
527 | goto fail_req_desc; |
528 | } |
529 | |
530 | return 0; |
531 | |
532 | fail_cmd_list: |
533 | pci_pool_free(fusion->io_request_frames_pool, fusion->io_request_frames, |
534 | fusion->io_request_frames_phys); |
535 | pci_pool_destroy(fusion->io_request_frames_pool); |
536 | fail_io_frames: |
537 | dma_free_coherent(&instance->pdev->dev, fusion->request_alloc_sz, |
538 | fusion->reply_frames_desc, |
539 | fusion->reply_frames_desc_phys); |
540 | pci_pool_free(fusion->reply_frames_desc_pool, |
541 | fusion->reply_frames_desc, |
542 | fusion->reply_frames_desc_phys); |
543 | pci_pool_destroy(fusion->reply_frames_desc_pool); |
544 | |
545 | fail_reply_desc: |
546 | dma_free_coherent(&instance->pdev->dev, fusion->request_alloc_sz, |
547 | fusion->req_frames_desc, |
548 | fusion->req_frames_desc_phys); |
549 | fail_req_desc: |
550 | return -ENOMEM; |
551 | } |
552 | |
553 | /** |
554 | * wait_and_poll - Issues a polling command |
555 | * @instance: Adapter soft state |
556 | * @cmd: Command packet to be issued |
557 | * |
558 | * For polling, MFI requires the cmd_status to be set to 0xFF before posting. |
559 | */ |
560 | int |
561 | wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd) |
562 | { |
563 | int i; |
564 | struct megasas_header *frame_hdr = &cmd->frame->hdr; |
565 | |
566 | u32 msecs = MFI_POLL_TIMEOUT_SECS * 1000; |
567 | |
568 | /* |
569 | * Wait for cmd_status to change |
570 | */ |
571 | for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) { |
572 | rmb(); |
573 | msleep(20); |
574 | } |
575 | |
576 | if (frame_hdr->cmd_status == 0xff) |
577 | return -ETIME; |
578 | |
579 | return 0; |
580 | } |
581 | |
582 | /** |
583 | * megasas_ioc_init_fusion - Initializes the FW |
584 | * @instance: Adapter soft state |
585 | * |
586 | * Issues the IOC Init cmd |
587 | */ |
588 | int |
589 | megasas_ioc_init_fusion(struct megasas_instance *instance) |
590 | { |
591 | struct megasas_init_frame *init_frame; |
592 | struct MPI2_IOC_INIT_REQUEST *IOCInitMessage; |
593 | dma_addr_t ioc_init_handle; |
9c915a8c |
594 | struct megasas_cmd *cmd; |
595 | u8 ret; |
596 | struct fusion_context *fusion; |
597 | union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; |
598 | int i; |
599 | struct megasas_header *frame_hdr; |
600 | |
601 | fusion = instance->ctrl_context; |
602 | |
603 | cmd = megasas_get_cmd(instance); |
604 | |
605 | if (!cmd) { |
606 | printk(KERN_ERR "Could not allocate cmd for INIT Frame\n"); |
607 | ret = 1; |
608 | goto fail_get_cmd; |
609 | } |
610 | |
611 | IOCInitMessage = |
612 | dma_alloc_coherent(&instance->pdev->dev, |
613 | sizeof(struct MPI2_IOC_INIT_REQUEST), |
614 | &ioc_init_handle, GFP_KERNEL); |
615 | |
616 | if (!IOCInitMessage) { |
617 | printk(KERN_ERR "Could not allocate memory for " |
618 | "IOCInitMessage\n"); |
619 | ret = 1; |
620 | goto fail_fw_init; |
621 | } |
622 | |
623 | memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST)); |
624 | |
625 | IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT; |
626 | IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER; |
627 | IOCInitMessage->MsgVersion = MPI2_VERSION; |
628 | IOCInitMessage->HeaderVersion = MPI2_HEADER_VERSION; |
629 | IOCInitMessage->SystemRequestFrameSize = |
630 | MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4; |
631 | |
632 | IOCInitMessage->ReplyDescriptorPostQueueDepth = fusion->reply_q_depth; |
633 | IOCInitMessage->ReplyDescriptorPostQueueAddress = |
634 | fusion->reply_frames_desc_phys; |
635 | IOCInitMessage->SystemRequestFrameBaseAddress = |
636 | fusion->io_request_frames_phys; |
5738f996 |
637 | IOCInitMessage->HostMSIxVectors = instance->msix_vectors; |
9c915a8c |
638 | init_frame = (struct megasas_init_frame *)cmd->frame; |
639 | memset(init_frame, 0, MEGAMFI_FRAME_SIZE); |
640 | |
641 | frame_hdr = &cmd->frame->hdr; |
9c915a8c |
642 | frame_hdr->cmd_status = 0xFF; |
643 | frame_hdr->flags |= MFI_FRAME_DONT_POST_IN_REPLY_QUEUE; |
644 | |
645 | init_frame->cmd = MFI_CMD_INIT; |
646 | init_frame->cmd_status = 0xFF; |
647 | |
648 | init_frame->queue_info_new_phys_addr_lo = ioc_init_handle; |
649 | init_frame->data_xfer_len = sizeof(struct MPI2_IOC_INIT_REQUEST); |
650 | |
651 | req_desc = |
652 | (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)fusion->req_frames_desc; |
653 | |
654 | req_desc->Words = cmd->frame_phys_addr; |
655 | req_desc->MFAIo.RequestFlags = |
656 | (MEGASAS_REQ_DESCRIPT_FLAGS_MFA << |
657 | MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); |
658 | |
659 | /* |
660 | * disable the intr before firing the init frame |
661 | */ |
662 | instance->instancet->disable_intr(instance->reg_set); |
663 | |
664 | for (i = 0; i < (10 * 1000); i += 20) { |
665 | if (readl(&instance->reg_set->doorbell) & 1) |
666 | msleep(20); |
667 | else |
668 | break; |
669 | } |
670 | |
671 | instance->instancet->fire_cmd(instance, req_desc->u.low, |
672 | req_desc->u.high, instance->reg_set); |
673 | |
674 | wait_and_poll(instance, cmd); |
675 | |
676 | frame_hdr = &cmd->frame->hdr; |
677 | if (frame_hdr->cmd_status != 0) { |
678 | ret = 1; |
679 | goto fail_fw_init; |
680 | } |
681 | printk(KERN_ERR "megasas:IOC Init cmd success\n"); |
682 | |
683 | ret = 0; |
684 | |
685 | fail_fw_init: |
686 | megasas_return_cmd(instance, cmd); |
687 | if (IOCInitMessage) |
688 | dma_free_coherent(&instance->pdev->dev, |
689 | sizeof(struct MPI2_IOC_INIT_REQUEST), |
690 | IOCInitMessage, ioc_init_handle); |
691 | fail_get_cmd: |
692 | return ret; |
693 | } |
694 | |
9c915a8c |
695 | /* |
696 | * megasas_get_ld_map_info - Returns FW's ld_map structure |
697 | * @instance: Adapter soft state |
698 | * @pend: Pend the command or not |
699 | * Issues an internal command (DCMD) to get the FW's controller PD |
700 | * list structure. This information is mainly used to find out SYSTEM |
701 | * supported by the FW. |
702 | */ |
703 | static int |
704 | megasas_get_ld_map_info(struct megasas_instance *instance) |
705 | { |
706 | int ret = 0; |
707 | struct megasas_cmd *cmd; |
708 | struct megasas_dcmd_frame *dcmd; |
709 | struct MR_FW_RAID_MAP_ALL *ci; |
710 | dma_addr_t ci_h = 0; |
711 | u32 size_map_info; |
712 | struct fusion_context *fusion; |
713 | |
714 | cmd = megasas_get_cmd(instance); |
715 | |
716 | if (!cmd) { |
717 | printk(KERN_DEBUG "megasas: Failed to get cmd for map info.\n"); |
718 | return -ENOMEM; |
719 | } |
720 | |
721 | fusion = instance->ctrl_context; |
722 | |
723 | if (!fusion) { |
724 | megasas_return_cmd(instance, cmd); |
725 | return 1; |
726 | } |
727 | |
728 | dcmd = &cmd->frame->dcmd; |
729 | |
730 | size_map_info = sizeof(struct MR_FW_RAID_MAP) + |
731 | (sizeof(struct MR_LD_SPAN_MAP) *(MAX_LOGICAL_DRIVES - 1)); |
732 | |
733 | ci = fusion->ld_map[(instance->map_id & 1)]; |
734 | ci_h = fusion->ld_map_phys[(instance->map_id & 1)]; |
735 | |
736 | if (!ci) { |
737 | printk(KERN_DEBUG "Failed to alloc mem for ld_map_info\n"); |
738 | megasas_return_cmd(instance, cmd); |
739 | return -ENOMEM; |
740 | } |
741 | |
742 | memset(ci, 0, sizeof(*ci)); |
743 | memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); |
744 | |
745 | dcmd->cmd = MFI_CMD_DCMD; |
746 | dcmd->cmd_status = 0xFF; |
747 | dcmd->sge_count = 1; |
748 | dcmd->flags = MFI_FRAME_DIR_READ; |
749 | dcmd->timeout = 0; |
750 | dcmd->pad_0 = 0; |
751 | dcmd->data_xfer_len = size_map_info; |
752 | dcmd->opcode = MR_DCMD_LD_MAP_GET_INFO; |
753 | dcmd->sgl.sge32[0].phys_addr = ci_h; |
754 | dcmd->sgl.sge32[0].length = size_map_info; |
755 | |
756 | if (!megasas_issue_polled(instance, cmd)) |
757 | ret = 0; |
758 | else { |
759 | printk(KERN_ERR "megasas: Get LD Map Info Failed\n"); |
760 | ret = -1; |
761 | } |
762 | |
763 | megasas_return_cmd(instance, cmd); |
764 | |
765 | return ret; |
766 | } |
767 | |
768 | u8 |
769 | megasas_get_map_info(struct megasas_instance *instance) |
770 | { |
771 | struct fusion_context *fusion = instance->ctrl_context; |
772 | |
773 | fusion->fast_path_io = 0; |
774 | if (!megasas_get_ld_map_info(instance)) { |
775 | if (MR_ValidateMapInfo(fusion->ld_map[(instance->map_id & 1)], |
776 | fusion->load_balance_info)) { |
777 | fusion->fast_path_io = 1; |
778 | return 0; |
779 | } |
780 | } |
781 | return 1; |
782 | } |
783 | |
784 | /* |
785 | * megasas_sync_map_info - Returns FW's ld_map structure |
786 | * @instance: Adapter soft state |
787 | * |
788 | * Issues an internal command (DCMD) to get the FW's controller PD |
789 | * list structure. This information is mainly used to find out SYSTEM |
790 | * supported by the FW. |
791 | */ |
792 | int |
793 | megasas_sync_map_info(struct megasas_instance *instance) |
794 | { |
795 | int ret = 0, i; |
796 | struct megasas_cmd *cmd; |
797 | struct megasas_dcmd_frame *dcmd; |
798 | u32 size_sync_info, num_lds; |
799 | struct fusion_context *fusion; |
800 | struct MR_LD_TARGET_SYNC *ci = NULL; |
801 | struct MR_FW_RAID_MAP_ALL *map; |
802 | struct MR_LD_RAID *raid; |
803 | struct MR_LD_TARGET_SYNC *ld_sync; |
804 | dma_addr_t ci_h = 0; |
805 | u32 size_map_info; |
806 | |
807 | cmd = megasas_get_cmd(instance); |
808 | |
809 | if (!cmd) { |
810 | printk(KERN_DEBUG "megasas: Failed to get cmd for sync" |
811 | "info.\n"); |
812 | return -ENOMEM; |
813 | } |
814 | |
815 | fusion = instance->ctrl_context; |
816 | |
817 | if (!fusion) { |
818 | megasas_return_cmd(instance, cmd); |
819 | return 1; |
820 | } |
821 | |
822 | map = fusion->ld_map[instance->map_id & 1]; |
823 | |
824 | num_lds = map->raidMap.ldCount; |
825 | |
826 | dcmd = &cmd->frame->dcmd; |
827 | |
828 | size_sync_info = sizeof(struct MR_LD_TARGET_SYNC) *num_lds; |
829 | |
830 | memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); |
831 | |
832 | ci = (struct MR_LD_TARGET_SYNC *) |
833 | fusion->ld_map[(instance->map_id - 1) & 1]; |
834 | memset(ci, 0, sizeof(struct MR_FW_RAID_MAP_ALL)); |
835 | |
836 | ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1]; |
837 | |
838 | ld_sync = (struct MR_LD_TARGET_SYNC *)ci; |
839 | |
840 | for (i = 0; i < num_lds; i++, ld_sync++) { |
841 | raid = MR_LdRaidGet(i, map); |
842 | ld_sync->targetId = MR_GetLDTgtId(i, map); |
843 | ld_sync->seqNum = raid->seqNum; |
844 | } |
845 | |
846 | size_map_info = sizeof(struct MR_FW_RAID_MAP) + |
847 | (sizeof(struct MR_LD_SPAN_MAP) *(MAX_LOGICAL_DRIVES - 1)); |
848 | |
849 | dcmd->cmd = MFI_CMD_DCMD; |
850 | dcmd->cmd_status = 0xFF; |
851 | dcmd->sge_count = 1; |
852 | dcmd->flags = MFI_FRAME_DIR_WRITE; |
853 | dcmd->timeout = 0; |
854 | dcmd->pad_0 = 0; |
855 | dcmd->data_xfer_len = size_map_info; |
856 | dcmd->mbox.b[0] = num_lds; |
857 | dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG; |
858 | dcmd->opcode = MR_DCMD_LD_MAP_GET_INFO; |
859 | dcmd->sgl.sge32[0].phys_addr = ci_h; |
860 | dcmd->sgl.sge32[0].length = size_map_info; |
861 | |
862 | instance->map_update_cmd = cmd; |
863 | |
864 | instance->instancet->issue_dcmd(instance, cmd); |
865 | |
866 | return ret; |
867 | } |
868 | |
869 | /** |
870 | * megasas_init_adapter_fusion - Initializes the FW |
871 | * @instance: Adapter soft state |
872 | * |
873 | * This is the main function for initializing firmware. |
874 | */ |
875 | u32 |
876 | megasas_init_adapter_fusion(struct megasas_instance *instance) |
877 | { |
878 | struct megasas_register_set __iomem *reg_set; |
879 | struct fusion_context *fusion; |
880 | u32 max_cmd; |
c8e858fe |
881 | int i = 0, count; |
9c915a8c |
882 | |
883 | fusion = instance->ctrl_context; |
884 | |
885 | reg_set = instance->reg_set; |
886 | |
887 | /* |
888 | * Get various operational parameters from status register |
889 | */ |
890 | instance->max_fw_cmds = |
891 | instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF; |
892 | instance->max_fw_cmds = min(instance->max_fw_cmds, (u16)1008); |
893 | |
894 | /* |
895 | * Reduce the max supported cmds by 1. This is to ensure that the |
896 | * reply_q_sz (1 more than the max cmd that driver may send) |
897 | * does not exceed max cmds that the FW can support |
898 | */ |
899 | instance->max_fw_cmds = instance->max_fw_cmds-1; |
900 | /* Only internal cmds (DCMD) need to have MFI frames */ |
901 | instance->max_mfi_cmds = MEGASAS_INT_CMDS; |
902 | |
903 | max_cmd = instance->max_fw_cmds; |
904 | |
905 | fusion->reply_q_depth = ((max_cmd + 1 + 15)/16)*16; |
906 | |
907 | fusion->request_alloc_sz = |
908 | sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *max_cmd; |
909 | fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION) |
910 | *(fusion->reply_q_depth); |
911 | fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE + |
912 | (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * |
913 | (max_cmd + 1)); /* Extra 1 for SMID 0 */ |
914 | |
915 | fusion->max_sge_in_main_msg = |
916 | (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE - |
917 | offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16; |
918 | |
919 | fusion->max_sge_in_chain = |
920 | MEGASAS_MAX_SZ_CHAIN_FRAME / sizeof(union MPI2_SGE_IO_UNION); |
921 | |
922 | instance->max_num_sge = fusion->max_sge_in_main_msg + |
923 | fusion->max_sge_in_chain - 2; |
924 | |
925 | /* Used for pass thru MFI frame (DCMD) */ |
926 | fusion->chain_offset_mfi_pthru = |
927 | offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16; |
928 | |
929 | fusion->chain_offset_io_request = |
930 | (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE - |
931 | sizeof(union MPI2_SGE_IO_UNION))/16; |
932 | |
c8e858fe |
933 | count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; |
934 | for (i = 0 ; i < count; i++) |
935 | fusion->last_reply_idx[i] = 0; |
9c915a8c |
936 | |
937 | /* |
938 | * Allocate memory for descriptors |
939 | * Create a pool of commands |
940 | */ |
941 | if (megasas_alloc_cmds(instance)) |
942 | goto fail_alloc_mfi_cmds; |
943 | if (megasas_alloc_cmds_fusion(instance)) |
944 | goto fail_alloc_cmds; |
945 | |
946 | if (megasas_ioc_init_fusion(instance)) |
947 | goto fail_ioc_init; |
948 | |
949 | instance->flag_ieee = 1; |
950 | |
951 | fusion->map_sz = sizeof(struct MR_FW_RAID_MAP) + |
952 | (sizeof(struct MR_LD_SPAN_MAP) *(MAX_LOGICAL_DRIVES - 1)); |
953 | |
954 | fusion->fast_path_io = 0; |
955 | |
956 | for (i = 0; i < 2; i++) { |
957 | fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev, |
958 | fusion->map_sz, |
959 | &fusion->ld_map_phys[i], |
960 | GFP_KERNEL); |
961 | if (!fusion->ld_map[i]) { |
962 | printk(KERN_ERR "megasas: Could not allocate memory " |
963 | "for map info\n"); |
964 | goto fail_map_info; |
965 | } |
966 | } |
967 | |
968 | if (!megasas_get_map_info(instance)) |
969 | megasas_sync_map_info(instance); |
970 | |
971 | return 0; |
972 | |
9c915a8c |
973 | fail_map_info: |
974 | if (i == 1) |
975 | dma_free_coherent(&instance->pdev->dev, fusion->map_sz, |
976 | fusion->ld_map[0], fusion->ld_map_phys[0]); |
977 | fail_ioc_init: |
eb1b1237 |
978 | megasas_free_cmds_fusion(instance); |
979 | fail_alloc_cmds: |
980 | megasas_free_cmds(instance); |
981 | fail_alloc_mfi_cmds: |
9c915a8c |
982 | return 1; |
983 | } |
984 | |
985 | /** |
986 | * megasas_fire_cmd_fusion - Sends command to the FW |
987 | * @frame_phys_addr : Physical address of cmd |
988 | * @frame_count : Number of frames for the command |
989 | * @regs : MFI register set |
990 | */ |
991 | void |
992 | megasas_fire_cmd_fusion(struct megasas_instance *instance, |
993 | dma_addr_t req_desc_lo, |
994 | u32 req_desc_hi, |
995 | struct megasas_register_set __iomem *regs) |
996 | { |
997 | unsigned long flags; |
998 | |
999 | spin_lock_irqsave(&instance->hba_lock, flags); |
1000 | |
1001 | writel(req_desc_lo, |
1002 | &(regs)->inbound_low_queue_port); |
1003 | writel(req_desc_hi, &(regs)->inbound_high_queue_port); |
1004 | spin_unlock_irqrestore(&instance->hba_lock, flags); |
1005 | } |
1006 | |
1007 | /** |
1008 | * map_cmd_status - Maps FW cmd status to OS cmd status |
1009 | * @cmd : Pointer to cmd |
1010 | * @status : status of cmd returned by FW |
1011 | * @ext_status : ext status of cmd returned by FW |
1012 | */ |
1013 | |
1014 | void |
1015 | map_cmd_status(struct megasas_cmd_fusion *cmd, u8 status, u8 ext_status) |
1016 | { |
1017 | |
1018 | switch (status) { |
1019 | |
1020 | case MFI_STAT_OK: |
1021 | cmd->scmd->result = DID_OK << 16; |
1022 | break; |
1023 | |
1024 | case MFI_STAT_SCSI_IO_FAILED: |
1025 | case MFI_STAT_LD_INIT_IN_PROGRESS: |
1026 | cmd->scmd->result = (DID_ERROR << 16) | ext_status; |
1027 | break; |
1028 | |
1029 | case MFI_STAT_SCSI_DONE_WITH_ERROR: |
1030 | |
1031 | cmd->scmd->result = (DID_OK << 16) | ext_status; |
1032 | if (ext_status == SAM_STAT_CHECK_CONDITION) { |
1033 | memset(cmd->scmd->sense_buffer, 0, |
1034 | SCSI_SENSE_BUFFERSIZE); |
1035 | memcpy(cmd->scmd->sense_buffer, cmd->sense, |
1036 | SCSI_SENSE_BUFFERSIZE); |
1037 | cmd->scmd->result |= DRIVER_SENSE << 24; |
1038 | } |
1039 | break; |
1040 | |
1041 | case MFI_STAT_LD_OFFLINE: |
1042 | case MFI_STAT_DEVICE_NOT_FOUND: |
1043 | cmd->scmd->result = DID_BAD_TARGET << 16; |
1044 | break; |
36807e67 |
1045 | case MFI_STAT_CONFIG_SEQ_MISMATCH: |
1046 | cmd->scmd->result = DID_IMM_RETRY << 16; |
1047 | break; |
9c915a8c |
1048 | default: |
1049 | printk(KERN_DEBUG "megasas: FW status %#x\n", status); |
1050 | cmd->scmd->result = DID_ERROR << 16; |
1051 | break; |
1052 | } |
1053 | } |
1054 | |
1055 | /** |
1056 | * megasas_make_sgl_fusion - Prepares 32-bit SGL |
1057 | * @instance: Adapter soft state |
1058 | * @scp: SCSI command from the mid-layer |
1059 | * @sgl_ptr: SGL to be filled in |
1060 | * @cmd: cmd we are working on |
1061 | * |
1062 | * If successful, this function returns the number of SG elements. |
1063 | */ |
1064 | static int |
1065 | megasas_make_sgl_fusion(struct megasas_instance *instance, |
1066 | struct scsi_cmnd *scp, |
1067 | struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr, |
1068 | struct megasas_cmd_fusion *cmd) |
1069 | { |
36807e67 |
1070 | int i, sg_processed, sge_count; |
9c915a8c |
1071 | struct scatterlist *os_sgl; |
1072 | struct fusion_context *fusion; |
1073 | |
1074 | fusion = instance->ctrl_context; |
1075 | |
36807e67 |
1076 | if (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) { |
1077 | struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr; |
1078 | sgl_ptr_end += fusion->max_sge_in_main_msg - 1; |
1079 | sgl_ptr_end->Flags = 0; |
1080 | } |
9c915a8c |
1081 | |
1082 | sge_count = scsi_dma_map(scp); |
1083 | |
1084 | BUG_ON(sge_count < 0); |
1085 | |
1086 | if (sge_count > instance->max_num_sge || !sge_count) |
1087 | return sge_count; |
1088 | |
9c915a8c |
1089 | scsi_for_each_sg(scp, os_sgl, sge_count, i) { |
1090 | sgl_ptr->Length = sg_dma_len(os_sgl); |
1091 | sgl_ptr->Address = sg_dma_address(os_sgl); |
1092 | sgl_ptr->Flags = 0; |
36807e67 |
1093 | if (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) { |
1094 | if (i == sge_count - 1) |
1095 | sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST; |
1096 | } |
9c915a8c |
1097 | sgl_ptr++; |
1098 | |
1099 | sg_processed = i + 1; |
1100 | |
1101 | if ((sg_processed == (fusion->max_sge_in_main_msg - 1)) && |
1102 | (sge_count > fusion->max_sge_in_main_msg)) { |
1103 | |
1104 | struct MPI25_IEEE_SGE_CHAIN64 *sg_chain; |
36807e67 |
1105 | if (instance->pdev->device == |
1106 | PCI_DEVICE_ID_LSI_INVADER) { |
1107 | if ((cmd->io_request->IoFlags & |
1108 | MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) != |
1109 | MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) |
1110 | cmd->io_request->ChainOffset = |
1111 | fusion-> |
1112 | chain_offset_io_request; |
1113 | else |
1114 | cmd->io_request->ChainOffset = 0; |
1115 | } else |
1116 | cmd->io_request->ChainOffset = |
1117 | fusion->chain_offset_io_request; |
1118 | |
9c915a8c |
1119 | sg_chain = sgl_ptr; |
1120 | /* Prepare chain element */ |
1121 | sg_chain->NextChainOffset = 0; |
36807e67 |
1122 | if (instance->pdev->device == |
1123 | PCI_DEVICE_ID_LSI_INVADER) |
1124 | sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT; |
1125 | else |
1126 | sg_chain->Flags = |
1127 | (IEEE_SGE_FLAGS_CHAIN_ELEMENT | |
1128 | MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR); |
9c915a8c |
1129 | sg_chain->Length = (sizeof(union MPI2_SGE_IO_UNION) |
1130 | *(sge_count - sg_processed)); |
1131 | sg_chain->Address = cmd->sg_frame_phys_addr; |
1132 | |
1133 | sgl_ptr = |
1134 | (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame; |
1135 | } |
1136 | } |
1137 | |
1138 | return sge_count; |
1139 | } |
1140 | |
1141 | /** |
1142 | * megasas_set_pd_lba - Sets PD LBA |
1143 | * @cdb: CDB |
1144 | * @cdb_len: cdb length |
1145 | * @start_blk: Start block of IO |
1146 | * |
1147 | * Used to set the PD LBA in CDB for FP IOs |
1148 | */ |
1149 | void |
1150 | megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len, |
1151 | struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp, |
1152 | struct MR_FW_RAID_MAP_ALL *local_map_ptr, u32 ref_tag) |
1153 | { |
1154 | struct MR_LD_RAID *raid; |
1155 | u32 ld; |
1156 | u64 start_blk = io_info->pdBlock; |
1157 | u8 *cdb = io_request->CDB.CDB32; |
1158 | u32 num_blocks = io_info->numBlocks; |
495c5609 |
1159 | u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0; |
9c915a8c |
1160 | |
1161 | /* Check if T10 PI (DIF) is enabled for this LD */ |
1162 | ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr); |
1163 | raid = MR_LdRaidGet(ld, local_map_ptr); |
1164 | if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) { |
1165 | memset(cdb, 0, sizeof(io_request->CDB.CDB32)); |
1166 | cdb[0] = MEGASAS_SCSI_VARIABLE_LENGTH_CMD; |
1167 | cdb[7] = MEGASAS_SCSI_ADDL_CDB_LEN; |
1168 | |
1169 | if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) |
1170 | cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32; |
1171 | else |
1172 | cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32; |
1173 | cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL; |
1174 | |
1175 | /* LBA */ |
1176 | cdb[12] = (u8)((start_blk >> 56) & 0xff); |
1177 | cdb[13] = (u8)((start_blk >> 48) & 0xff); |
1178 | cdb[14] = (u8)((start_blk >> 40) & 0xff); |
1179 | cdb[15] = (u8)((start_blk >> 32) & 0xff); |
1180 | cdb[16] = (u8)((start_blk >> 24) & 0xff); |
1181 | cdb[17] = (u8)((start_blk >> 16) & 0xff); |
1182 | cdb[18] = (u8)((start_blk >> 8) & 0xff); |
1183 | cdb[19] = (u8)(start_blk & 0xff); |
1184 | |
1185 | /* Logical block reference tag */ |
1186 | io_request->CDB.EEDP32.PrimaryReferenceTag = |
1187 | cpu_to_be32(ref_tag); |
1188 | io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0xffff; |
1189 | |
1190 | io_request->DataLength = num_blocks * 512; |
1191 | io_request->IoFlags = 32; /* Specify 32-byte cdb */ |
1192 | |
1193 | /* Transfer length */ |
1194 | cdb[28] = (u8)((num_blocks >> 24) & 0xff); |
1195 | cdb[29] = (u8)((num_blocks >> 16) & 0xff); |
1196 | cdb[30] = (u8)((num_blocks >> 8) & 0xff); |
1197 | cdb[31] = (u8)(num_blocks & 0xff); |
1198 | |
1199 | /* set SCSI IO EEDPFlags */ |
1200 | if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) { |
1201 | io_request->EEDPFlags = |
1202 | MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG | |
1203 | MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG | |
1204 | MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP | |
1205 | MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG | |
1206 | MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD; |
1207 | } else { |
1208 | io_request->EEDPFlags = |
1209 | MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG | |
1210 | MPI2_SCSIIO_EEDPFLAGS_INSERT_OP; |
1211 | } |
1212 | io_request->Control |= (0x4 << 26); |
1213 | io_request->EEDPBlockSize = MEGASAS_EEDPBLOCKSIZE; |
1214 | } else { |
1215 | /* Some drives don't support 16/12 byte CDB's, convert to 10 */ |
1216 | if (((cdb_len == 12) || (cdb_len == 16)) && |
1217 | (start_blk <= 0xffffffff)) { |
1218 | if (cdb_len == 16) { |
1219 | opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10; |
1220 | flagvals = cdb[1]; |
1221 | groupnum = cdb[14]; |
1222 | control = cdb[15]; |
1223 | } else { |
1224 | opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10; |
1225 | flagvals = cdb[1]; |
1226 | groupnum = cdb[10]; |
1227 | control = cdb[11]; |
1228 | } |
1229 | |
1230 | memset(cdb, 0, sizeof(io_request->CDB.CDB32)); |
1231 | |
1232 | cdb[0] = opcode; |
1233 | cdb[1] = flagvals; |
1234 | cdb[6] = groupnum; |
1235 | cdb[9] = control; |
1236 | |
1237 | /* Transfer length */ |
1238 | cdb[8] = (u8)(num_blocks & 0xff); |
1239 | cdb[7] = (u8)((num_blocks >> 8) & 0xff); |
1240 | |
495c5609 |
1241 | io_request->IoFlags = 10; /* Specify 10-byte cdb */ |
9c915a8c |
1242 | cdb_len = 10; |
495c5609 |
1243 | } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) { |
1244 | /* Convert to 16 byte CDB for large LBA's */ |
1245 | switch (cdb_len) { |
1246 | case 6: |
1247 | opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16; |
1248 | control = cdb[5]; |
1249 | break; |
1250 | case 10: |
1251 | opcode = |
1252 | cdb[0] == READ_10 ? READ_16 : WRITE_16; |
1253 | flagvals = cdb[1]; |
1254 | groupnum = cdb[6]; |
1255 | control = cdb[9]; |
1256 | break; |
1257 | case 12: |
1258 | opcode = |
1259 | cdb[0] == READ_12 ? READ_16 : WRITE_16; |
1260 | flagvals = cdb[1]; |
1261 | groupnum = cdb[10]; |
1262 | control = cdb[11]; |
1263 | break; |
1264 | } |
1265 | |
1266 | memset(cdb, 0, sizeof(io_request->CDB.CDB32)); |
1267 | |
1268 | cdb[0] = opcode; |
1269 | cdb[1] = flagvals; |
1270 | cdb[14] = groupnum; |
1271 | cdb[15] = control; |
1272 | |
1273 | /* Transfer length */ |
1274 | cdb[13] = (u8)(num_blocks & 0xff); |
1275 | cdb[12] = (u8)((num_blocks >> 8) & 0xff); |
1276 | cdb[11] = (u8)((num_blocks >> 16) & 0xff); |
1277 | cdb[10] = (u8)((num_blocks >> 24) & 0xff); |
1278 | |
1279 | io_request->IoFlags = 16; /* Specify 16-byte cdb */ |
1280 | cdb_len = 16; |
9c915a8c |
1281 | } |
1282 | |
1283 | /* Normal case, just load LBA here */ |
1284 | switch (cdb_len) { |
1285 | case 6: |
1286 | { |
1287 | u8 val = cdb[1] & 0xE0; |
1288 | cdb[3] = (u8)(start_blk & 0xff); |
1289 | cdb[2] = (u8)((start_blk >> 8) & 0xff); |
1290 | cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f); |
1291 | break; |
1292 | } |
1293 | case 10: |
1294 | cdb[5] = (u8)(start_blk & 0xff); |
1295 | cdb[4] = (u8)((start_blk >> 8) & 0xff); |
1296 | cdb[3] = (u8)((start_blk >> 16) & 0xff); |
1297 | cdb[2] = (u8)((start_blk >> 24) & 0xff); |
1298 | break; |
1299 | case 12: |
1300 | cdb[5] = (u8)(start_blk & 0xff); |
1301 | cdb[4] = (u8)((start_blk >> 8) & 0xff); |
1302 | cdb[3] = (u8)((start_blk >> 16) & 0xff); |
1303 | cdb[2] = (u8)((start_blk >> 24) & 0xff); |
1304 | break; |
1305 | case 16: |
1306 | cdb[9] = (u8)(start_blk & 0xff); |
1307 | cdb[8] = (u8)((start_blk >> 8) & 0xff); |
1308 | cdb[7] = (u8)((start_blk >> 16) & 0xff); |
1309 | cdb[6] = (u8)((start_blk >> 24) & 0xff); |
1310 | cdb[5] = (u8)((start_blk >> 32) & 0xff); |
1311 | cdb[4] = (u8)((start_blk >> 40) & 0xff); |
1312 | cdb[3] = (u8)((start_blk >> 48) & 0xff); |
1313 | cdb[2] = (u8)((start_blk >> 56) & 0xff); |
1314 | break; |
1315 | } |
1316 | } |
1317 | } |
1318 | |
1319 | /** |
1320 | * megasas_build_ldio_fusion - Prepares IOs to devices |
1321 | * @instance: Adapter soft state |
1322 | * @scp: SCSI command |
1323 | * @cmd: Command to be prepared |
1324 | * |
1325 | * Prepares the io_request and chain elements (sg_frame) for IO |
1326 | * The IO can be for PD (Fast Path) or LD |
1327 | */ |
1328 | void |
1329 | megasas_build_ldio_fusion(struct megasas_instance *instance, |
1330 | struct scsi_cmnd *scp, |
1331 | struct megasas_cmd_fusion *cmd) |
1332 | { |
1333 | u8 fp_possible; |
1334 | u32 start_lba_lo, start_lba_hi, device_id; |
1335 | struct MPI2_RAID_SCSI_IO_REQUEST *io_request; |
1336 | union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; |
1337 | struct IO_REQUEST_INFO io_info; |
1338 | struct fusion_context *fusion; |
1339 | struct MR_FW_RAID_MAP_ALL *local_map_ptr; |
1340 | |
1341 | device_id = MEGASAS_DEV_INDEX(instance, scp); |
1342 | |
1343 | fusion = instance->ctrl_context; |
1344 | |
1345 | io_request = cmd->io_request; |
1346 | io_request->RaidContext.VirtualDiskTgtId = device_id; |
1347 | io_request->RaidContext.status = 0; |
1348 | io_request->RaidContext.exStatus = 0; |
1349 | |
1350 | req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc; |
1351 | |
1352 | start_lba_lo = 0; |
1353 | start_lba_hi = 0; |
1354 | fp_possible = 0; |
1355 | |
1356 | /* |
1357 | * 6-byte READ(0x08) or WRITE(0x0A) cdb |
1358 | */ |
1359 | if (scp->cmd_len == 6) { |
1360 | io_request->DataLength = (u32) scp->cmnd[4]; |
1361 | start_lba_lo = ((u32) scp->cmnd[1] << 16) | |
1362 | ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3]; |
1363 | |
1364 | start_lba_lo &= 0x1FFFFF; |
1365 | } |
1366 | |
1367 | /* |
1368 | * 10-byte READ(0x28) or WRITE(0x2A) cdb |
1369 | */ |
1370 | else if (scp->cmd_len == 10) { |
1371 | io_request->DataLength = (u32) scp->cmnd[8] | |
1372 | ((u32) scp->cmnd[7] << 8); |
1373 | start_lba_lo = ((u32) scp->cmnd[2] << 24) | |
1374 | ((u32) scp->cmnd[3] << 16) | |
1375 | ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; |
1376 | } |
1377 | |
1378 | /* |
1379 | * 12-byte READ(0xA8) or WRITE(0xAA) cdb |
1380 | */ |
1381 | else if (scp->cmd_len == 12) { |
1382 | io_request->DataLength = ((u32) scp->cmnd[6] << 24) | |
1383 | ((u32) scp->cmnd[7] << 16) | |
1384 | ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; |
1385 | start_lba_lo = ((u32) scp->cmnd[2] << 24) | |
1386 | ((u32) scp->cmnd[3] << 16) | |
1387 | ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; |
1388 | } |
1389 | |
1390 | /* |
1391 | * 16-byte READ(0x88) or WRITE(0x8A) cdb |
1392 | */ |
1393 | else if (scp->cmd_len == 16) { |
1394 | io_request->DataLength = ((u32) scp->cmnd[10] << 24) | |
1395 | ((u32) scp->cmnd[11] << 16) | |
1396 | ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13]; |
1397 | start_lba_lo = ((u32) scp->cmnd[6] << 24) | |
1398 | ((u32) scp->cmnd[7] << 16) | |
1399 | ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; |
1400 | |
1401 | start_lba_hi = ((u32) scp->cmnd[2] << 24) | |
1402 | ((u32) scp->cmnd[3] << 16) | |
1403 | ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; |
1404 | } |
1405 | |
1406 | memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO)); |
1407 | io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo; |
1408 | io_info.numBlocks = io_request->DataLength; |
1409 | io_info.ldTgtId = device_id; |
1410 | |
1411 | if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) |
1412 | io_info.isRead = 1; |
1413 | |
1414 | local_map_ptr = fusion->ld_map[(instance->map_id & 1)]; |
1415 | |
1416 | if ((MR_TargetIdToLdGet(device_id, local_map_ptr) >= |
1417 | MAX_LOGICAL_DRIVES) || (!fusion->fast_path_io)) { |
1418 | io_request->RaidContext.regLockFlags = 0; |
1419 | fp_possible = 0; |
1420 | } else { |
36807e67 |
1421 | if (MR_BuildRaidContext(instance, &io_info, |
1422 | &io_request->RaidContext, |
9c915a8c |
1423 | local_map_ptr)) |
1424 | fp_possible = io_info.fpOkForIo; |
1425 | } |
1426 | |
c8e858fe |
1427 | /* Use smp_processor_id() for now until cmd->request->cpu is CPU |
1428 | id by default, not CPU group id, otherwise all MSI-X queues won't |
1429 | be utilized */ |
1430 | cmd->request_desc->SCSIIO.MSIxIndex = instance->msix_vectors ? |
1431 | smp_processor_id() % instance->msix_vectors : 0; |
1432 | |
9c915a8c |
1433 | if (fp_possible) { |
1434 | megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp, |
1435 | local_map_ptr, start_lba_lo); |
1436 | io_request->DataLength = scsi_bufflen(scp); |
1437 | io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; |
1438 | cmd->request_desc->SCSIIO.RequestFlags = |
1439 | (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY |
1440 | << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); |
36807e67 |
1441 | if (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) { |
1442 | if (io_request->RaidContext.regLockFlags == |
1443 | REGION_TYPE_UNUSED) |
1444 | cmd->request_desc->SCSIIO.RequestFlags = |
1445 | (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK << |
1446 | MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); |
1447 | io_request->RaidContext.Type = MPI2_TYPE_CUDA; |
1448 | io_request->RaidContext.nseg = 0x1; |
1449 | io_request->IoFlags |= |
1450 | MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH; |
1451 | io_request->RaidContext.regLockFlags |= |
1452 | (MR_RL_FLAGS_GRANT_DESTINATION_CUDA | |
1453 | MR_RL_FLAGS_SEQ_NUM_ENABLE); |
1454 | } |
9c915a8c |
1455 | if ((fusion->load_balance_info[device_id].loadBalanceFlag) && |
1456 | (io_info.isRead)) { |
1457 | io_info.devHandle = |
1458 | get_updated_dev_handle( |
1459 | &fusion->load_balance_info[device_id], |
1460 | &io_info); |
1461 | scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG; |
1462 | } else |
1463 | scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG; |
1464 | cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle; |
1465 | io_request->DevHandle = io_info.devHandle; |
1466 | } else { |
1467 | io_request->RaidContext.timeoutValue = |
1468 | local_map_ptr->raidMap.fpPdIoTimeoutSec; |
9c915a8c |
1469 | cmd->request_desc->SCSIIO.RequestFlags = |
1470 | (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO |
1471 | << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); |
36807e67 |
1472 | if (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) { |
1473 | if (io_request->RaidContext.regLockFlags == |
1474 | REGION_TYPE_UNUSED) |
1475 | cmd->request_desc->SCSIIO.RequestFlags = |
1476 | (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK << |
1477 | MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); |
1478 | io_request->RaidContext.Type = MPI2_TYPE_CUDA; |
1479 | io_request->RaidContext.regLockFlags |= |
1480 | (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 | |
1481 | MR_RL_FLAGS_SEQ_NUM_ENABLE); |
1482 | io_request->RaidContext.nseg = 0x1; |
1483 | } |
1484 | io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; |
1485 | io_request->DevHandle = device_id; |
9c915a8c |
1486 | } /* Not FP */ |
1487 | } |
1488 | |
1489 | /** |
1490 | * megasas_build_dcdb_fusion - Prepares IOs to devices |
1491 | * @instance: Adapter soft state |
1492 | * @scp: SCSI command |
1493 | * @cmd: Command to be prepared |
1494 | * |
1495 | * Prepares the io_request frame for non-io cmds |
1496 | */ |
1497 | static void |
1498 | megasas_build_dcdb_fusion(struct megasas_instance *instance, |
1499 | struct scsi_cmnd *scmd, |
1500 | struct megasas_cmd_fusion *cmd) |
1501 | { |
1502 | u32 device_id; |
1503 | struct MPI2_RAID_SCSI_IO_REQUEST *io_request; |
1504 | u16 pd_index = 0; |
1505 | struct MR_FW_RAID_MAP_ALL *local_map_ptr; |
1506 | struct fusion_context *fusion = instance->ctrl_context; |
1507 | |
1508 | io_request = cmd->io_request; |
1509 | device_id = MEGASAS_DEV_INDEX(instance, scmd); |
1510 | pd_index = (scmd->device->channel * MEGASAS_MAX_DEV_PER_CHANNEL) |
1511 | +scmd->device->id; |
1512 | local_map_ptr = fusion->ld_map[(instance->map_id & 1)]; |
1513 | |
1514 | /* Check if this is a system PD I/O */ |
f5124405 |
1515 | if (instance->pd_list[pd_index].driveState == MR_PD_STATE_SYSTEM) { |
9c915a8c |
1516 | io_request->Function = 0; |
1517 | io_request->DevHandle = |
1518 | local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl; |
1519 | io_request->RaidContext.timeoutValue = |
1520 | local_map_ptr->raidMap.fpPdIoTimeoutSec; |
1521 | io_request->RaidContext.regLockFlags = 0; |
1522 | io_request->RaidContext.regLockRowLBA = 0; |
1523 | io_request->RaidContext.regLockLength = 0; |
1524 | io_request->RaidContext.RAIDFlags = |
1525 | MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD << |
1526 | MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT; |
1527 | cmd->request_desc->SCSIIO.RequestFlags = |
1528 | (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY << |
1529 | MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); |
1530 | } else { |
1531 | io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; |
1532 | io_request->DevHandle = device_id; |
1533 | cmd->request_desc->SCSIIO.RequestFlags = |
1534 | (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << |
1535 | MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); |
1536 | } |
1537 | io_request->RaidContext.VirtualDiskTgtId = device_id; |
eaa3c240 |
1538 | io_request->LUN[1] = scmd->device->lun; |
9c915a8c |
1539 | io_request->DataLength = scsi_bufflen(scmd); |
1540 | } |
1541 | |
1542 | /** |
1543 | * megasas_build_io_fusion - Prepares IOs to devices |
1544 | * @instance: Adapter soft state |
1545 | * @scp: SCSI command |
1546 | * @cmd: Command to be prepared |
1547 | * |
1548 | * Invokes helper functions to prepare request frames |
1549 | * and sets flags appropriate for IO/Non-IO cmd |
1550 | */ |
1551 | int |
1552 | megasas_build_io_fusion(struct megasas_instance *instance, |
1553 | struct scsi_cmnd *scp, |
1554 | struct megasas_cmd_fusion *cmd) |
1555 | { |
1556 | u32 device_id, sge_count; |
1557 | struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request; |
1558 | |
1559 | device_id = MEGASAS_DEV_INDEX(instance, scp); |
1560 | |
1561 | /* Zero out some fields so they don't get reused */ |
eaa3c240 |
1562 | io_request->LUN[1] = 0; |
9c915a8c |
1563 | io_request->CDB.EEDP32.PrimaryReferenceTag = 0; |
1564 | io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0; |
1565 | io_request->EEDPFlags = 0; |
1566 | io_request->Control = 0; |
1567 | io_request->EEDPBlockSize = 0; |
36807e67 |
1568 | io_request->ChainOffset = 0; |
9c915a8c |
1569 | io_request->RaidContext.RAIDFlags = 0; |
36807e67 |
1570 | io_request->RaidContext.Type = 0; |
1571 | io_request->RaidContext.nseg = 0; |
9c915a8c |
1572 | |
1573 | memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len); |
1574 | /* |
1575 | * Just the CDB length,rest of the Flags are zero |
1576 | * This will be modified for FP in build_ldio_fusion |
1577 | */ |
1578 | io_request->IoFlags = scp->cmd_len; |
1579 | |
1580 | if (megasas_is_ldio(scp)) |
1581 | megasas_build_ldio_fusion(instance, scp, cmd); |
1582 | else |
1583 | megasas_build_dcdb_fusion(instance, scp, cmd); |
1584 | |
1585 | /* |
1586 | * Construct SGL |
1587 | */ |
1588 | |
1589 | sge_count = |
1590 | megasas_make_sgl_fusion(instance, scp, |
1591 | (struct MPI25_IEEE_SGE_CHAIN64 *) |
1592 | &io_request->SGL, cmd); |
1593 | |
1594 | if (sge_count > instance->max_num_sge) { |
1595 | printk(KERN_ERR "megasas: Error. sge_count (0x%x) exceeds " |
1596 | "max (0x%x) allowed\n", sge_count, |
1597 | instance->max_num_sge); |
1598 | return 1; |
1599 | } |
1600 | |
1601 | io_request->RaidContext.numSGE = sge_count; |
1602 | |
1603 | io_request->SGLFlags = MPI2_SGE_FLAGS_64_BIT_ADDRESSING; |
1604 | |
1605 | if (scp->sc_data_direction == PCI_DMA_TODEVICE) |
1606 | io_request->Control |= MPI2_SCSIIO_CONTROL_WRITE; |
1607 | else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) |
1608 | io_request->Control |= MPI2_SCSIIO_CONTROL_READ; |
1609 | |
1610 | io_request->SGLOffset0 = |
1611 | offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4; |
1612 | |
1613 | io_request->SenseBufferLowAddress = cmd->sense_phys_addr; |
1614 | io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE; |
1615 | |
1616 | cmd->scmd = scp; |
1617 | scp->SCp.ptr = (char *)cmd; |
1618 | |
1619 | return 0; |
1620 | } |
1621 | |
1622 | union MEGASAS_REQUEST_DESCRIPTOR_UNION * |
1623 | megasas_get_request_descriptor(struct megasas_instance *instance, u16 index) |
1624 | { |
1625 | u8 *p; |
1626 | struct fusion_context *fusion; |
1627 | |
1628 | if (index >= instance->max_fw_cmds) { |
1629 | printk(KERN_ERR "megasas: Invalid SMID (0x%x)request for " |
1630 | "descriptor\n", index); |
1631 | return NULL; |
1632 | } |
1633 | fusion = instance->ctrl_context; |
1634 | p = fusion->req_frames_desc |
1635 | +sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *index; |
1636 | |
1637 | return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p; |
1638 | } |
1639 | |
1640 | /** |
1641 | * megasas_build_and_issue_cmd_fusion -Main routine for building and |
1642 | * issuing non IOCTL cmd |
1643 | * @instance: Adapter soft state |
1644 | * @scmd: pointer to scsi cmd from OS |
1645 | */ |
1646 | static u32 |
1647 | megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance, |
1648 | struct scsi_cmnd *scmd) |
1649 | { |
1650 | struct megasas_cmd_fusion *cmd; |
1651 | union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; |
1652 | u32 index; |
1653 | struct fusion_context *fusion; |
1654 | |
1655 | fusion = instance->ctrl_context; |
1656 | |
1657 | cmd = megasas_get_cmd_fusion(instance); |
1658 | if (!cmd) |
1659 | return SCSI_MLQUEUE_HOST_BUSY; |
1660 | |
1661 | index = cmd->index; |
1662 | |
1663 | req_desc = megasas_get_request_descriptor(instance, index-1); |
1664 | if (!req_desc) |
1665 | return 1; |
1666 | |
1667 | req_desc->Words = 0; |
1668 | cmd->request_desc = req_desc; |
9c915a8c |
1669 | |
1670 | if (megasas_build_io_fusion(instance, scmd, cmd)) { |
1671 | megasas_return_cmd_fusion(instance, cmd); |
1672 | printk(KERN_ERR "megasas: Error building command.\n"); |
1673 | cmd->request_desc = NULL; |
1674 | return 1; |
1675 | } |
1676 | |
1677 | req_desc = cmd->request_desc; |
1678 | req_desc->SCSIIO.SMID = index; |
1679 | |
1680 | if (cmd->io_request->ChainOffset != 0 && |
1681 | cmd->io_request->ChainOffset != 0xF) |
1682 | printk(KERN_ERR "megasas: The chain offset value is not " |
1683 | "correct : %x\n", cmd->io_request->ChainOffset); |
1684 | |
1685 | /* |
1686 | * Issue the command to the FW |
1687 | */ |
1688 | atomic_inc(&instance->fw_outstanding); |
1689 | |
1690 | instance->instancet->fire_cmd(instance, |
1691 | req_desc->u.low, req_desc->u.high, |
1692 | instance->reg_set); |
1693 | |
1694 | return 0; |
1695 | } |
1696 | |
1697 | /** |
1698 | * complete_cmd_fusion - Completes command |
1699 | * @instance: Adapter soft state |
1700 | * Completes all commands that is in reply descriptor queue |
1701 | */ |
1702 | int |
c8e858fe |
1703 | complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex) |
9c915a8c |
1704 | { |
1705 | union MPI2_REPLY_DESCRIPTORS_UNION *desc; |
1706 | struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc; |
1707 | struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req; |
1708 | struct fusion_context *fusion; |
1709 | struct megasas_cmd *cmd_mfi; |
1710 | struct megasas_cmd_fusion *cmd_fusion; |
1711 | u16 smid, num_completed; |
1712 | u8 reply_descript_type, arm; |
1713 | u32 status, extStatus, device_id; |
1714 | union desc_value d_val; |
1715 | struct LD_LOAD_BALANCE_INFO *lbinfo; |
1716 | |
1717 | fusion = instance->ctrl_context; |
1718 | |
1719 | if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) |
1720 | return IRQ_HANDLED; |
1721 | |
1722 | desc = fusion->reply_frames_desc; |
c8e858fe |
1723 | desc += ((MSIxIndex * fusion->reply_alloc_sz)/ |
1724 | sizeof(union MPI2_REPLY_DESCRIPTORS_UNION)) + |
1725 | fusion->last_reply_idx[MSIxIndex]; |
9c915a8c |
1726 | |
1727 | reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc; |
1728 | |
1729 | d_val.word = desc->Words; |
1730 | |
1731 | reply_descript_type = reply_desc->ReplyFlags & |
1732 | MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK; |
1733 | |
1734 | if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) |
1735 | return IRQ_NONE; |
1736 | |
1737 | d_val.word = desc->Words; |
1738 | |
1739 | num_completed = 0; |
1740 | |
1741 | while ((d_val.u.low != UINT_MAX) && (d_val.u.high != UINT_MAX)) { |
1742 | smid = reply_desc->SMID; |
1743 | |
1744 | cmd_fusion = fusion->cmd_list[smid - 1]; |
1745 | |
1746 | scsi_io_req = |
1747 | (struct MPI2_RAID_SCSI_IO_REQUEST *) |
1748 | cmd_fusion->io_request; |
1749 | |
1750 | if (cmd_fusion->scmd) |
1751 | cmd_fusion->scmd->SCp.ptr = NULL; |
1752 | |
1753 | status = scsi_io_req->RaidContext.status; |
1754 | extStatus = scsi_io_req->RaidContext.exStatus; |
1755 | |
1756 | switch (scsi_io_req->Function) { |
1757 | case MPI2_FUNCTION_SCSI_IO_REQUEST: /*Fast Path IO.*/ |
1758 | /* Update load balancing info */ |
1759 | device_id = MEGASAS_DEV_INDEX(instance, |
1760 | cmd_fusion->scmd); |
1761 | lbinfo = &fusion->load_balance_info[device_id]; |
1762 | if (cmd_fusion->scmd->SCp.Status & |
1763 | MEGASAS_LOAD_BALANCE_FLAG) { |
1764 | arm = lbinfo->raid1DevHandle[0] == |
1765 | cmd_fusion->io_request->DevHandle ? 0 : |
1766 | 1; |
1767 | atomic_dec(&lbinfo->scsi_pending_cmds[arm]); |
1768 | cmd_fusion->scmd->SCp.Status &= |
1769 | ~MEGASAS_LOAD_BALANCE_FLAG; |
1770 | } |
1771 | if (reply_descript_type == |
1772 | MPI2_RPY_DESCRIPT_FLAGS_SCSI_IO_SUCCESS) { |
1773 | if (megasas_dbg_lvl == 5) |
1774 | printk(KERN_ERR "\nmegasas: FAST Path " |
1775 | "IO Success\n"); |
1776 | } |
1777 | /* Fall thru and complete IO */ |
1778 | case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */ |
1779 | /* Map the FW Cmd Status */ |
1780 | map_cmd_status(cmd_fusion, status, extStatus); |
1781 | scsi_dma_unmap(cmd_fusion->scmd); |
1782 | cmd_fusion->scmd->scsi_done(cmd_fusion->scmd); |
1783 | scsi_io_req->RaidContext.status = 0; |
1784 | scsi_io_req->RaidContext.exStatus = 0; |
1785 | megasas_return_cmd_fusion(instance, cmd_fusion); |
1786 | atomic_dec(&instance->fw_outstanding); |
1787 | |
1788 | break; |
1789 | case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */ |
1790 | cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx]; |
1791 | megasas_complete_cmd(instance, cmd_mfi, DID_OK); |
1792 | cmd_fusion->flags = 0; |
1793 | megasas_return_cmd_fusion(instance, cmd_fusion); |
1794 | |
1795 | break; |
1796 | } |
1797 | |
c8e858fe |
1798 | fusion->last_reply_idx[MSIxIndex]++; |
1799 | if (fusion->last_reply_idx[MSIxIndex] >= |
1800 | fusion->reply_q_depth) |
1801 | fusion->last_reply_idx[MSIxIndex] = 0; |
9c915a8c |
1802 | |
1803 | desc->Words = ULLONG_MAX; |
1804 | num_completed++; |
1805 | |
1806 | /* Get the next reply descriptor */ |
c8e858fe |
1807 | if (!fusion->last_reply_idx[MSIxIndex]) |
1808 | desc = fusion->reply_frames_desc + |
1809 | ((MSIxIndex * fusion->reply_alloc_sz)/ |
1810 | sizeof(union MPI2_REPLY_DESCRIPTORS_UNION)); |
9c915a8c |
1811 | else |
1812 | desc++; |
1813 | |
1814 | reply_desc = |
1815 | (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc; |
1816 | |
1817 | d_val.word = desc->Words; |
1818 | |
1819 | reply_descript_type = reply_desc->ReplyFlags & |
1820 | MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK; |
1821 | |
1822 | if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) |
1823 | break; |
1824 | } |
1825 | |
1826 | if (!num_completed) |
1827 | return IRQ_NONE; |
1828 | |
1829 | wmb(); |
c8e858fe |
1830 | writel((MSIxIndex << 24) | fusion->last_reply_idx[MSIxIndex], |
9c915a8c |
1831 | &instance->reg_set->reply_post_host_index); |
53ef2bbd |
1832 | megasas_check_and_restore_queue_depth(instance); |
9c915a8c |
1833 | return IRQ_HANDLED; |
1834 | } |
1835 | |
1836 | /** |
1837 | * megasas_complete_cmd_dpc_fusion - Completes command |
1838 | * @instance: Adapter soft state |
1839 | * |
1840 | * Tasklet to complete cmds |
1841 | */ |
1842 | void |
1843 | megasas_complete_cmd_dpc_fusion(unsigned long instance_addr) |
1844 | { |
1845 | struct megasas_instance *instance = |
1846 | (struct megasas_instance *)instance_addr; |
1847 | unsigned long flags; |
c8e858fe |
1848 | u32 count, MSIxIndex; |
1849 | |
1850 | count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; |
9c915a8c |
1851 | |
1852 | /* If we have already declared adapter dead, donot complete cmds */ |
1853 | spin_lock_irqsave(&instance->hba_lock, flags); |
1854 | if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { |
1855 | spin_unlock_irqrestore(&instance->hba_lock, flags); |
1856 | return; |
1857 | } |
1858 | spin_unlock_irqrestore(&instance->hba_lock, flags); |
1859 | |
1860 | spin_lock_irqsave(&instance->completion_lock, flags); |
c8e858fe |
1861 | for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++) |
1862 | complete_cmd_fusion(instance, MSIxIndex); |
9c915a8c |
1863 | spin_unlock_irqrestore(&instance->completion_lock, flags); |
1864 | } |
1865 | |
1866 | /** |
1867 | * megasas_isr_fusion - isr entry point |
1868 | */ |
1869 | irqreturn_t megasas_isr_fusion(int irq, void *devp) |
1870 | { |
c8e858fe |
1871 | struct megasas_irq_context *irq_context = devp; |
1872 | struct megasas_instance *instance = irq_context->instance; |
9c915a8c |
1873 | u32 mfiStatus, fw_state; |
1874 | |
c8e858fe |
1875 | if (!instance->msix_vectors) { |
9c915a8c |
1876 | mfiStatus = instance->instancet->clear_intr(instance->reg_set); |
1877 | if (!mfiStatus) |
1878 | return IRQ_NONE; |
1879 | } |
1880 | |
1881 | /* If we are resetting, bail */ |
6497b247 |
1882 | if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) { |
1883 | instance->instancet->clear_intr(instance->reg_set); |
9c915a8c |
1884 | return IRQ_HANDLED; |
6497b247 |
1885 | } |
9c915a8c |
1886 | |
c8e858fe |
1887 | if (!complete_cmd_fusion(instance, irq_context->MSIxIndex)) { |
6497b247 |
1888 | instance->instancet->clear_intr(instance->reg_set); |
9c915a8c |
1889 | /* If we didn't complete any commands, check for FW fault */ |
1890 | fw_state = instance->instancet->read_fw_status_reg( |
1891 | instance->reg_set) & MFI_STATE_MASK; |
1892 | if (fw_state == MFI_STATE_FAULT) |
1893 | schedule_work(&instance->work_init); |
1894 | } |
1895 | |
1896 | return IRQ_HANDLED; |
1897 | } |
1898 | |
1899 | /** |
1900 | * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru |
1901 | * @instance: Adapter soft state |
1902 | * mfi_cmd: megasas_cmd pointer |
1903 | * |
1904 | */ |
1905 | u8 |
1906 | build_mpt_mfi_pass_thru(struct megasas_instance *instance, |
1907 | struct megasas_cmd *mfi_cmd) |
1908 | { |
1909 | struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain; |
1910 | struct MPI2_RAID_SCSI_IO_REQUEST *io_req; |
1911 | struct megasas_cmd_fusion *cmd; |
1912 | struct fusion_context *fusion; |
1913 | struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr; |
1914 | |
1915 | cmd = megasas_get_cmd_fusion(instance); |
1916 | if (!cmd) |
1917 | return 1; |
1918 | |
1919 | /* Save the smid. To be used for returning the cmd */ |
1920 | mfi_cmd->context.smid = cmd->index; |
1921 | |
1922 | cmd->sync_cmd_idx = mfi_cmd->index; |
1923 | |
1924 | /* |
1925 | * For cmds where the flag is set, store the flag and check |
1926 | * on completion. For cmds with this flag, don't call |
1927 | * megasas_complete_cmd |
1928 | */ |
1929 | |
1930 | if (frame_hdr->flags & MFI_FRAME_DONT_POST_IN_REPLY_QUEUE) |
1931 | cmd->flags = MFI_FRAME_DONT_POST_IN_REPLY_QUEUE; |
1932 | |
1933 | fusion = instance->ctrl_context; |
1934 | io_req = cmd->io_request; |
36807e67 |
1935 | |
1936 | if (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) { |
1937 | struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = |
1938 | (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL; |
1939 | sgl_ptr_end += fusion->max_sge_in_main_msg - 1; |
1940 | sgl_ptr_end->Flags = 0; |
1941 | } |
1942 | |
9c915a8c |
1943 | mpi25_ieee_chain = |
1944 | (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain; |
1945 | |
1946 | io_req->Function = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST; |
1947 | io_req->SGLOffset0 = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, |
1948 | SGL) / 4; |
1949 | io_req->ChainOffset = fusion->chain_offset_mfi_pthru; |
1950 | |
1951 | mpi25_ieee_chain->Address = mfi_cmd->frame_phys_addr; |
1952 | |
1953 | mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT | |
1954 | MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR; |
1955 | |
1956 | mpi25_ieee_chain->Length = MEGASAS_MAX_SZ_CHAIN_FRAME; |
1957 | |
1958 | return 0; |
1959 | } |
1960 | |
1961 | /** |
1962 | * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd |
1963 | * @instance: Adapter soft state |
1964 | * @cmd: mfi cmd to build |
1965 | * |
1966 | */ |
1967 | union MEGASAS_REQUEST_DESCRIPTOR_UNION * |
1968 | build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) |
1969 | { |
1970 | union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; |
1971 | u16 index; |
1972 | |
1973 | if (build_mpt_mfi_pass_thru(instance, cmd)) { |
1974 | printk(KERN_ERR "Couldn't build MFI pass thru cmd\n"); |
1975 | return NULL; |
1976 | } |
1977 | |
1978 | index = cmd->context.smid; |
1979 | |
1980 | req_desc = megasas_get_request_descriptor(instance, index - 1); |
1981 | |
1982 | if (!req_desc) |
1983 | return NULL; |
1984 | |
1985 | req_desc->Words = 0; |
1986 | req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << |
1987 | MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); |
1988 | |
1989 | req_desc->SCSIIO.SMID = index; |
1990 | |
1991 | return req_desc; |
1992 | } |
1993 | |
1994 | /** |
1995 | * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd |
1996 | * @instance: Adapter soft state |
1997 | * @cmd: mfi cmd pointer |
1998 | * |
1999 | */ |
2000 | void |
2001 | megasas_issue_dcmd_fusion(struct megasas_instance *instance, |
2002 | struct megasas_cmd *cmd) |
2003 | { |
2004 | union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; |
9c915a8c |
2005 | |
2006 | req_desc = build_mpt_cmd(instance, cmd); |
2007 | if (!req_desc) { |
2008 | printk(KERN_ERR "Couldn't issue MFI pass thru cmd\n"); |
2009 | return; |
2010 | } |
9c915a8c |
2011 | instance->instancet->fire_cmd(instance, req_desc->u.low, |
2012 | req_desc->u.high, instance->reg_set); |
2013 | } |
2014 | |
2015 | /** |
2016 | * megasas_release_fusion - Reverses the FW initialization |
2017 | * @intance: Adapter soft state |
2018 | */ |
2019 | void |
2020 | megasas_release_fusion(struct megasas_instance *instance) |
2021 | { |
2022 | megasas_free_cmds(instance); |
2023 | megasas_free_cmds_fusion(instance); |
2024 | |
2025 | iounmap(instance->reg_set); |
2026 | |
2027 | pci_release_selected_regions(instance->pdev, instance->bar); |
2028 | } |
2029 | |
2030 | /** |
2031 | * megasas_read_fw_status_reg_fusion - returns the current FW status value |
2032 | * @regs: MFI register set |
2033 | */ |
2034 | static u32 |
2035 | megasas_read_fw_status_reg_fusion(struct megasas_register_set __iomem *regs) |
2036 | { |
2037 | return readl(&(regs)->outbound_scratch_pad); |
2038 | } |
2039 | |
2040 | /** |
2041 | * megasas_adp_reset_fusion - For controller reset |
2042 | * @regs: MFI register set |
2043 | */ |
2044 | static int |
2045 | megasas_adp_reset_fusion(struct megasas_instance *instance, |
2046 | struct megasas_register_set __iomem *regs) |
2047 | { |
2048 | return 0; |
2049 | } |
2050 | |
2051 | /** |
2052 | * megasas_check_reset_fusion - For controller reset check |
2053 | * @regs: MFI register set |
2054 | */ |
2055 | static int |
2056 | megasas_check_reset_fusion(struct megasas_instance *instance, |
2057 | struct megasas_register_set __iomem *regs) |
2058 | { |
2059 | return 0; |
2060 | } |
2061 | |
2062 | /* This function waits for outstanding commands on fusion to complete */ |
2063 | int megasas_wait_for_outstanding_fusion(struct megasas_instance *instance) |
2064 | { |
2065 | int i, outstanding, retval = 0; |
2066 | u32 fw_state, wait_time = MEGASAS_RESET_WAIT_TIME; |
2067 | |
2068 | for (i = 0; i < wait_time; i++) { |
2069 | /* Check if firmware is in fault state */ |
2070 | fw_state = instance->instancet->read_fw_status_reg( |
2071 | instance->reg_set) & MFI_STATE_MASK; |
2072 | if (fw_state == MFI_STATE_FAULT) { |
2073 | printk(KERN_WARNING "megasas: Found FW in FAULT state," |
2074 | " will reset adapter.\n"); |
2075 | retval = 1; |
2076 | goto out; |
2077 | } |
2078 | |
2079 | outstanding = atomic_read(&instance->fw_outstanding); |
2080 | if (!outstanding) |
2081 | goto out; |
2082 | |
2083 | if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { |
2084 | printk(KERN_NOTICE "megasas: [%2d]waiting for %d " |
2085 | "commands to complete\n", i, outstanding); |
2086 | megasas_complete_cmd_dpc_fusion( |
2087 | (unsigned long)instance); |
2088 | } |
2089 | msleep(1000); |
2090 | } |
2091 | |
2092 | if (atomic_read(&instance->fw_outstanding)) { |
2093 | printk("megaraid_sas: pending commands remain after waiting, " |
2094 | "will reset adapter.\n"); |
2095 | retval = 1; |
2096 | } |
2097 | out: |
2098 | return retval; |
2099 | } |
2100 | |
2101 | void megasas_reset_reply_desc(struct megasas_instance *instance) |
2102 | { |
c8e858fe |
2103 | int i, count; |
9c915a8c |
2104 | struct fusion_context *fusion; |
2105 | union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc; |
2106 | |
2107 | fusion = instance->ctrl_context; |
c8e858fe |
2108 | count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; |
2109 | for (i = 0 ; i < count ; i++) |
2110 | fusion->last_reply_idx[i] = 0; |
9c915a8c |
2111 | reply_desc = fusion->reply_frames_desc; |
c8e858fe |
2112 | for (i = 0 ; i < fusion->reply_q_depth * count; i++, reply_desc++) |
9c915a8c |
2113 | reply_desc->Words = ULLONG_MAX; |
2114 | } |
2115 | |
2116 | /* Core fusion reset function */ |
2117 | int megasas_reset_fusion(struct Scsi_Host *shost) |
2118 | { |
2119 | int retval = SUCCESS, i, j, retry = 0; |
2120 | struct megasas_instance *instance; |
2121 | struct megasas_cmd_fusion *cmd_fusion; |
2122 | struct fusion_context *fusion; |
2123 | struct megasas_cmd *cmd_mfi; |
2124 | union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; |
7e70e733 |
2125 | u32 host_diag, abs_state, status_reg, reset_adapter; |
9c915a8c |
2126 | |
2127 | instance = (struct megasas_instance *)shost->hostdata; |
2128 | fusion = instance->ctrl_context; |
2129 | |
9c915a8c |
2130 | if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { |
2131 | printk(KERN_WARNING "megaraid_sas: Hardware critical error, " |
2132 | "returning FAILED.\n"); |
d4a759a9 |
2133 | return FAILED; |
9c915a8c |
2134 | } |
2135 | |
7e70e733 |
2136 | mutex_lock(&instance->reset_mutex); |
2137 | set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); |
2138 | instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT; |
2139 | instance->instancet->disable_intr(instance->reg_set); |
2140 | msleep(1000); |
2141 | |
9c915a8c |
2142 | /* First try waiting for commands to complete */ |
2143 | if (megasas_wait_for_outstanding_fusion(instance)) { |
2144 | printk(KERN_WARNING "megaraid_sas: resetting fusion " |
2145 | "adapter.\n"); |
2146 | /* Now return commands back to the OS */ |
2147 | for (i = 0 ; i < instance->max_fw_cmds; i++) { |
2148 | cmd_fusion = fusion->cmd_list[i]; |
2149 | if (cmd_fusion->scmd) { |
2150 | scsi_dma_unmap(cmd_fusion->scmd); |
2151 | cmd_fusion->scmd->result = (DID_RESET << 16); |
2152 | cmd_fusion->scmd->scsi_done(cmd_fusion->scmd); |
2153 | megasas_return_cmd_fusion(instance, cmd_fusion); |
2154 | atomic_dec(&instance->fw_outstanding); |
2155 | } |
2156 | } |
2157 | |
7e70e733 |
2158 | status_reg = instance->instancet->read_fw_status_reg( |
2159 | instance->reg_set); |
2160 | abs_state = status_reg & MFI_STATE_MASK; |
2161 | reset_adapter = status_reg & MFI_RESET_ADAPTER; |
2162 | if (instance->disableOnlineCtrlReset || |
2163 | (abs_state == MFI_STATE_FAULT && !reset_adapter)) { |
9c915a8c |
2164 | /* Reset not supported, kill adapter */ |
2165 | printk(KERN_WARNING "megaraid_sas: Reset not supported" |
2166 | ", killing adapter.\n"); |
2167 | megaraid_sas_kill_hba(instance); |
2168 | instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; |
2169 | retval = FAILED; |
2170 | goto out; |
2171 | } |
2172 | |
2173 | /* Now try to reset the chip */ |
2174 | for (i = 0; i < MEGASAS_FUSION_MAX_RESET_TRIES; i++) { |
2175 | writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, |
2176 | &instance->reg_set->fusion_seq_offset); |
2177 | writel(MPI2_WRSEQ_1ST_KEY_VALUE, |
2178 | &instance->reg_set->fusion_seq_offset); |
2179 | writel(MPI2_WRSEQ_2ND_KEY_VALUE, |
2180 | &instance->reg_set->fusion_seq_offset); |
2181 | writel(MPI2_WRSEQ_3RD_KEY_VALUE, |
2182 | &instance->reg_set->fusion_seq_offset); |
2183 | writel(MPI2_WRSEQ_4TH_KEY_VALUE, |
2184 | &instance->reg_set->fusion_seq_offset); |
2185 | writel(MPI2_WRSEQ_5TH_KEY_VALUE, |
2186 | &instance->reg_set->fusion_seq_offset); |
2187 | writel(MPI2_WRSEQ_6TH_KEY_VALUE, |
2188 | &instance->reg_set->fusion_seq_offset); |
2189 | |
2190 | /* Check that the diag write enable (DRWE) bit is on */ |
2191 | host_diag = readl(&instance->reg_set->fusion_host_diag); |
7e70e733 |
2192 | retry = 0; |
9c915a8c |
2193 | while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) { |
2194 | msleep(100); |
2195 | host_diag = |
2196 | readl(&instance->reg_set->fusion_host_diag); |
2197 | if (retry++ == 100) { |
2198 | printk(KERN_WARNING "megaraid_sas: " |
2199 | "Host diag unlock failed!\n"); |
2200 | break; |
2201 | } |
2202 | } |
2203 | if (!(host_diag & HOST_DIAG_WRITE_ENABLE)) |
2204 | continue; |
2205 | |
2206 | /* Send chip reset command */ |
2207 | writel(host_diag | HOST_DIAG_RESET_ADAPTER, |
2208 | &instance->reg_set->fusion_host_diag); |
2209 | msleep(3000); |
2210 | |
2211 | /* Make sure reset adapter bit is cleared */ |
2212 | host_diag = readl(&instance->reg_set->fusion_host_diag); |
2213 | retry = 0; |
2214 | while (host_diag & HOST_DIAG_RESET_ADAPTER) { |
2215 | msleep(100); |
2216 | host_diag = |
2217 | readl(&instance->reg_set->fusion_host_diag); |
2218 | if (retry++ == 1000) { |
2219 | printk(KERN_WARNING "megaraid_sas: " |
2220 | "Diag reset adapter never " |
2221 | "cleared!\n"); |
2222 | break; |
2223 | } |
2224 | } |
2225 | if (host_diag & HOST_DIAG_RESET_ADAPTER) |
2226 | continue; |
2227 | |
2228 | abs_state = |
2229 | instance->instancet->read_fw_status_reg( |
7e70e733 |
2230 | instance->reg_set) & MFI_STATE_MASK; |
9c915a8c |
2231 | retry = 0; |
2232 | |
2233 | while ((abs_state <= MFI_STATE_FW_INIT) && |
2234 | (retry++ < 1000)) { |
2235 | msleep(100); |
2236 | abs_state = |
2237 | instance->instancet->read_fw_status_reg( |
7e70e733 |
2238 | instance->reg_set) & MFI_STATE_MASK; |
9c915a8c |
2239 | } |
2240 | if (abs_state <= MFI_STATE_FW_INIT) { |
2241 | printk(KERN_WARNING "megaraid_sas: firmware " |
2242 | "state < MFI_STATE_FW_INIT, state = " |
2243 | "0x%x\n", abs_state); |
2244 | continue; |
2245 | } |
2246 | |
2247 | /* Wait for FW to become ready */ |
058a8fac |
2248 | if (megasas_transition_to_ready(instance, 1)) { |
9c915a8c |
2249 | printk(KERN_WARNING "megaraid_sas: Failed to " |
2250 | "transition controller to ready.\n"); |
2251 | continue; |
2252 | } |
2253 | |
2254 | megasas_reset_reply_desc(instance); |
2255 | if (megasas_ioc_init_fusion(instance)) { |
2256 | printk(KERN_WARNING "megaraid_sas: " |
2257 | "megasas_ioc_init_fusion() failed!\n"); |
2258 | continue; |
2259 | } |
2260 | |
3f0e58bc |
2261 | clear_bit(MEGASAS_FUSION_IN_RESET, |
2262 | &instance->reset_flags); |
9c915a8c |
2263 | instance->instancet->enable_intr(instance->reg_set); |
2264 | instance->adprecovery = MEGASAS_HBA_OPERATIONAL; |
2265 | |
2266 | /* Re-fire management commands */ |
2267 | for (j = 0 ; j < instance->max_fw_cmds; j++) { |
2268 | cmd_fusion = fusion->cmd_list[j]; |
2269 | if (cmd_fusion->sync_cmd_idx != |
2270 | (u32)ULONG_MAX) { |
2271 | cmd_mfi = |
2272 | instance-> |
2273 | cmd_list[cmd_fusion->sync_cmd_idx]; |
2274 | if (cmd_mfi->frame->dcmd.opcode == |
2275 | MR_DCMD_LD_MAP_GET_INFO) { |
2276 | megasas_return_cmd(instance, |
2277 | cmd_mfi); |
2278 | megasas_return_cmd_fusion( |
2279 | instance, cmd_fusion); |
2280 | } else { |
2281 | req_desc = |
2282 | megasas_get_request_descriptor( |
2283 | instance, |
2284 | cmd_mfi->context.smid |
2285 | -1); |
2286 | if (!req_desc) |
2287 | printk(KERN_WARNING |
2288 | "req_desc NULL" |
2289 | "\n"); |
2290 | else { |
2291 | instance->instancet-> |
2292 | fire_cmd(instance, |
2293 | req_desc-> |
2294 | u.low, |
2295 | req_desc-> |
2296 | u.high, |
2297 | instance-> |
2298 | reg_set); |
2299 | } |
2300 | } |
2301 | } |
2302 | } |
2303 | |
2304 | /* Reset load balance info */ |
2305 | memset(fusion->load_balance_info, 0, |
2306 | sizeof(struct LD_LOAD_BALANCE_INFO) |
2307 | *MAX_LOGICAL_DRIVES); |
2308 | |
2309 | if (!megasas_get_map_info(instance)) |
2310 | megasas_sync_map_info(instance); |
2311 | |
2312 | /* Adapter reset completed successfully */ |
2313 | printk(KERN_WARNING "megaraid_sas: Reset " |
2314 | "successful.\n"); |
2315 | retval = SUCCESS; |
2316 | goto out; |
2317 | } |
2318 | /* Reset failed, kill the adapter */ |
2319 | printk(KERN_WARNING "megaraid_sas: Reset failed, killing " |
2320 | "adapter.\n"); |
2321 | megaraid_sas_kill_hba(instance); |
2322 | retval = FAILED; |
2323 | } else { |
3f0e58bc |
2324 | clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); |
9c915a8c |
2325 | instance->instancet->enable_intr(instance->reg_set); |
2326 | instance->adprecovery = MEGASAS_HBA_OPERATIONAL; |
2327 | } |
2328 | out: |
2329 | clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); |
2330 | mutex_unlock(&instance->reset_mutex); |
2331 | return retval; |
2332 | } |
2333 | |
2334 | /* Fusion OCR work queue */ |
2335 | void megasas_fusion_ocr_wq(struct work_struct *work) |
2336 | { |
2337 | struct megasas_instance *instance = |
2338 | container_of(work, struct megasas_instance, work_init); |
2339 | |
2340 | megasas_reset_fusion(instance->host); |
2341 | } |
2342 | |
2343 | struct megasas_instance_template megasas_instance_template_fusion = { |
2344 | .fire_cmd = megasas_fire_cmd_fusion, |
2345 | .enable_intr = megasas_enable_intr_fusion, |
2346 | .disable_intr = megasas_disable_intr_fusion, |
2347 | .clear_intr = megasas_clear_intr_fusion, |
2348 | .read_fw_status_reg = megasas_read_fw_status_reg_fusion, |
2349 | .adp_reset = megasas_adp_reset_fusion, |
2350 | .check_reset = megasas_check_reset_fusion, |
2351 | .service_isr = megasas_isr_fusion, |
2352 | .tasklet = megasas_complete_cmd_dpc_fusion, |
2353 | .init_adapter = megasas_init_adapter_fusion, |
2354 | .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion, |
2355 | .issue_dcmd = megasas_issue_dcmd_fusion, |
2356 | }; |