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[SCSI] libosd: write/read_sg_kern API
[deliverable/linux.git] / drivers / scsi / megaraid / megaraid_sas.c
CommitLineData
c4a3e0a5
BS		 1/*
2 *
3 * Linux MegaRAID driver for SAS based RAID controllers
4 *
f28cd7cf 5 * Copyright (c) 2003-2005 LSI Corporation.
c4a3e0a5
BS		 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
10 * 2 of the License, or (at your option) any later version.
11 *
12 * FILE : megaraid_sas.c
63bad45d 13 * Version : v00.00.04.17.1-rc1
c4a3e0a5
BS		 14 *
15 * Authors:
cc5968c8
SP		 16 * (email-id : megaraidlinux@lsi.com)
17 * Sreenivas Bagalkote
18 * Sumant Patro
19 * Bo Yang
c4a3e0a5
BS		 20 *
21 * List of supported controllers
22 *
23 * OEM Product Name VID DID SSVID SSID
24 * --- ------------ --- --- ---- ----
25 */
26
27#include <linux/kernel.h>
28#include <linux/types.h>
29#include <linux/pci.h>
30#include <linux/list.h>
c4a3e0a5
BS		 31#include <linux/moduleparam.h>
32#include <linux/module.h>
33#include <linux/spinlock.h>
34#include <linux/interrupt.h>
35#include <linux/delay.h>
36#include <linux/uio.h>
5a0e3ad6 37#include <linux/slab.h>
c4a3e0a5 38#include <asm/uaccess.h>
43399236 39#include <linux/fs.h>
c4a3e0a5 40#include <linux/compat.h>
cf62a0a5 41#include <linux/blkdev.h>
0b950672 42#include <linux/mutex.h>
c3518837 43#include <linux/poll.h>
c4a3e0a5
BS		 44
45#include <scsi/scsi.h>
46#include <scsi/scsi_cmnd.h>
47#include <scsi/scsi_device.h>
48#include <scsi/scsi_host.h>
49#include "megaraid_sas.h"
50
ad84db2e 51/*
52 * poll_mode_io:1- schedule complete completion from q cmd
53 */
54static unsigned int poll_mode_io;
55module_param_named(poll_mode_io, poll_mode_io, int, 0);
56MODULE_PARM_DESC(poll_mode_io,
57 "Complete cmds from IO path, (default=0)");
58
c4a3e0a5
BS		 59MODULE_LICENSE("GPL");
60MODULE_VERSION(MEGASAS_VERSION);
3d6d174a 61MODULE_AUTHOR("megaraidlinux@lsi.com");
f28cd7cf 62MODULE_DESCRIPTION("LSI MegaRAID SAS Driver");
c4a3e0a5 63
39a98554 64static int megasas_transition_to_ready(struct megasas_instance *instance);
65static int megasas_get_pd_list(struct megasas_instance *instance);
66static int megasas_issue_init_mfi(struct megasas_instance *instance);
67static int megasas_register_aen(struct megasas_instance *instance,
68 u32 seq_num, u32 class_locale_word);
c4a3e0a5
BS		 69/*
70 * PCI ID table for all supported controllers
71 */
72static struct pci_device_id megasas_pci_table[] = {
73
f3d7271c
HK		 74 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
75 /* xscale IOP */
76 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
77 /* ppc IOP */
af7a5647 78 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
79 /* ppc IOP */
6610a6b3
YB		 80 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
81 /* gen2*/
82 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
83 /* gen2*/
87911122
YB		 84 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
85 /* skinny*/
86 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
87 /* skinny*/
f3d7271c
HK		 88 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
89 /* xscale IOP, vega */
90 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
91 /* xscale IOP */
92 {}
c4a3e0a5
BS		 93};
94
95MODULE_DEVICE_TABLE(pci, megasas_pci_table);
96
97static int megasas_mgmt_majorno;
98static struct megasas_mgmt_info megasas_mgmt_info;
99static struct fasync_struct *megasas_async_queue;
0b950672 100static DEFINE_MUTEX(megasas_async_queue_mutex);
c4a3e0a5 101
c3518837
YB		 102static int megasas_poll_wait_aen;
103static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
72c4fd36 104static u32 support_poll_for_event;
658dcedb
SP		 105static u32 megasas_dbg_lvl;
106
c3518837
YB		 107/* define lock for aen poll */
108spinlock_t poll_aen_lock;
109
7343eb65 110static void
111megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
112 u8 alt_status);
113
c4a3e0a5
BS		 114/**
115 * megasas_get_cmd - Get a command from the free pool
116 * @instance: Adapter soft state
117 *
118 * Returns a free command from the pool
119 */
858119e1 120static struct megasas_cmd *megasas_get_cmd(struct megasas_instance
c4a3e0a5
BS		 121 *instance)
122{
123 unsigned long flags;
124 struct megasas_cmd *cmd = NULL;
125
126 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
127
128 if (!list_empty(&instance->cmd_pool)) {
129 cmd = list_entry((&instance->cmd_pool)->next,
130 struct megasas_cmd, list);
131 list_del_init(&cmd->list);
132 } else {
133 printk(KERN_ERR "megasas: Command pool empty!\n");
134 }
135
136 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
137 return cmd;
138}
139
140/**
141 * megasas_return_cmd - Return a cmd to free command pool
142 * @instance: Adapter soft state
143 * @cmd: Command packet to be returned to free command pool
144 */
145static inline void
146megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
147{
148 unsigned long flags;
149
150 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
151
152 cmd->scmd = NULL;
153 list_add_tail(&cmd->list, &instance->cmd_pool);
154
155 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
156}
157
1341c939
SP		 158
159/**
160* The following functions are defined for xscale
161* (deviceid : 1064R, PERC5) controllers
162*/
163
c4a3e0a5 164/**
1341c939 165 * megasas_enable_intr_xscale - Enables interrupts
c4a3e0a5
BS		 166 * @regs: MFI register set
167 */
168static inline void
1341c939 169megasas_enable_intr_xscale(struct megasas_register_set __iomem * regs)
c4a3e0a5 170{
39a98554 171 writel(0, &(regs)->outbound_intr_mask);
c4a3e0a5
BS		 172
173 /* Dummy readl to force pci flush */
174 readl(&regs->outbound_intr_mask);
175}
176
b274cab7
SP		 177/**
178 * megasas_disable_intr_xscale -Disables interrupt
179 * @regs: MFI register set
180 */
181static inline void
182megasas_disable_intr_xscale(struct megasas_register_set __iomem * regs)
183{
184 u32 mask = 0x1f;
185 writel(mask, &regs->outbound_intr_mask);
186 /* Dummy readl to force pci flush */
187 readl(&regs->outbound_intr_mask);
188}
189
1341c939
SP		 190/**
191 * megasas_read_fw_status_reg_xscale - returns the current FW status value
192 * @regs: MFI register set
193 */
194static u32
195megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs)
196{
197 return readl(&(regs)->outbound_msg_0);
198}
199/**
200 * megasas_clear_interrupt_xscale - Check & clear interrupt
201 * @regs: MFI register set
202 */
203static int
204megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs)
205{
206 u32 status;
39a98554 207 u32 mfiStatus = 0;
1341c939
SP		 208 /*
209 * Check if it is our interrupt
210 */
211 status = readl(&regs->outbound_intr_status);
212
39a98554 213 if (status & MFI_OB_INTR_STATUS_MASK)
214 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
215 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
216 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
1341c939
SP		 217
218 /*
219 * Clear the interrupt by writing back the same value
220 */
39a98554 221 if (mfiStatus)
222 writel(status, &regs->outbound_intr_status);
1341c939 223
06f579de
YB		 224 /* Dummy readl to force pci flush */
225 readl(&regs->outbound_intr_status);
226
39a98554 227 return mfiStatus;
1341c939
SP		 228}
229
230/**
231 * megasas_fire_cmd_xscale - Sends command to the FW
232 * @frame_phys_addr : Physical address of cmd
233 * @frame_count : Number of frames for the command
234 * @regs : MFI register set
235 */
236static inline void
0c79e681
YB		 237megasas_fire_cmd_xscale(struct megasas_instance *instance,
238 dma_addr_t frame_phys_addr,
239 u32 frame_count,
240 struct megasas_register_set __iomem *regs)
1341c939 241{
39a98554 242 unsigned long flags;
243 spin_lock_irqsave(&instance->hba_lock, flags);
1341c939
SP		 244 writel((frame_phys_addr >> 3)|(frame_count),
245 &(regs)->inbound_queue_port);
39a98554 246 spin_unlock_irqrestore(&instance->hba_lock, flags);
247}
248
249/**
250 * megasas_adp_reset_xscale - For controller reset
251 * @regs: MFI register set
252 */
253static int
254megasas_adp_reset_xscale(struct megasas_instance *instance,
255 struct megasas_register_set __iomem *regs)
256{
257 u32 i;
258 u32 pcidata;
259 writel(MFI_ADP_RESET, &regs->inbound_doorbell);
260
261 for (i = 0; i < 3; i++)
262 msleep(1000); /* sleep for 3 secs */
263 pcidata = 0;
264 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
265 printk(KERN_NOTICE "pcidata = %x\n", pcidata);
266 if (pcidata & 0x2) {
267 printk(KERN_NOTICE "mfi 1068 offset read=%x\n", pcidata);
268 pcidata &= ~0x2;
269 pci_write_config_dword(instance->pdev,
270 MFI_1068_PCSR_OFFSET, pcidata);
271
272 for (i = 0; i < 2; i++)
273 msleep(1000); /* need to wait 2 secs again */
274
275 pcidata = 0;
276 pci_read_config_dword(instance->pdev,
277 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
278 printk(KERN_NOTICE "1068 offset handshake read=%x\n", pcidata);
279 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
280 printk(KERN_NOTICE "1068 offset pcidt=%x\n", pcidata);
281 pcidata = 0;
282 pci_write_config_dword(instance->pdev,
283 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
284 }
285 }
286 return 0;
287}
288
289/**
290 * megasas_check_reset_xscale - For controller reset check
291 * @regs: MFI register set
292 */
293static int
294megasas_check_reset_xscale(struct megasas_instance *instance,
295 struct megasas_register_set __iomem *regs)
296{
297 u32 consumer;
298 consumer = *instance->consumer;
299
300 if ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) &&
301 (*instance->consumer == MEGASAS_ADPRESET_INPROG_SIGN)) {
302 return 1;
303 }
304 return 0;
1341c939
SP		 305}
306
307static struct megasas_instance_template megasas_instance_template_xscale = {
308
309 .fire_cmd = megasas_fire_cmd_xscale,
310 .enable_intr = megasas_enable_intr_xscale,
b274cab7 311 .disable_intr = megasas_disable_intr_xscale,
1341c939
SP		 312 .clear_intr = megasas_clear_intr_xscale,
313 .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
39a98554 314 .adp_reset = megasas_adp_reset_xscale,
315 .check_reset = megasas_check_reset_xscale,
1341c939
SP		 316};
317
318/**
319* This is the end of set of functions & definitions specific
320* to xscale (deviceid : 1064R, PERC5) controllers
321*/
322
f9876f0b
SP		 323/**
324* The following functions are defined for ppc (deviceid : 0x60)
325* controllers
326*/
327
328/**
329 * megasas_enable_intr_ppc - Enables interrupts
330 * @regs: MFI register set
331 */
332static inline void
333megasas_enable_intr_ppc(struct megasas_register_set __iomem * regs)
334{
335 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
336
39a98554 337 writel(~0x80000000, &(regs)->outbound_intr_mask);
f9876f0b
SP		 338
339 /* Dummy readl to force pci flush */
340 readl(&regs->outbound_intr_mask);
341}
342
b274cab7
SP		 343/**
344 * megasas_disable_intr_ppc - Disable interrupt
345 * @regs: MFI register set
346 */
347static inline void
348megasas_disable_intr_ppc(struct megasas_register_set __iomem * regs)
349{
350 u32 mask = 0xFFFFFFFF;
351 writel(mask, &regs->outbound_intr_mask);
352 /* Dummy readl to force pci flush */
353 readl(&regs->outbound_intr_mask);
354}
355
f9876f0b
SP		 356/**
357 * megasas_read_fw_status_reg_ppc - returns the current FW status value
358 * @regs: MFI register set
359 */
360static u32
361megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs)
362{
363 return readl(&(regs)->outbound_scratch_pad);
364}
365
366/**
367 * megasas_clear_interrupt_ppc - Check & clear interrupt
368 * @regs: MFI register set
369 */
370static int
371megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs)
372{
373 u32 status;
374 /*
375 * Check if it is our interrupt
376 */
377 status = readl(&regs->outbound_intr_status);
378
379 if (!(status & MFI_REPLY_1078_MESSAGE_INTERRUPT)) {
39a98554 380 return 0;
f9876f0b
SP		 381 }
382
383 /*
384 * Clear the interrupt by writing back the same value
385 */
386 writel(status, &regs->outbound_doorbell_clear);
387
06f579de
YB		 388 /* Dummy readl to force pci flush */
389 readl(&regs->outbound_doorbell_clear);
390
39a98554 391 return 1;
f9876f0b
SP		 392}
393/**
394 * megasas_fire_cmd_ppc - Sends command to the FW
395 * @frame_phys_addr : Physical address of cmd
396 * @frame_count : Number of frames for the command
397 * @regs : MFI register set
398 */
399static inline void
0c79e681
YB		 400megasas_fire_cmd_ppc(struct megasas_instance *instance,
401 dma_addr_t frame_phys_addr,
402 u32 frame_count,
403 struct megasas_register_set __iomem *regs)
f9876f0b 404{
39a98554 405 unsigned long flags;
406 spin_lock_irqsave(&instance->hba_lock, flags);
f9876f0b
SP		 407 writel((frame_phys_addr | (frame_count<<1))|1,
408 &(regs)->inbound_queue_port);
39a98554 409 spin_unlock_irqrestore(&instance->hba_lock, flags);
f9876f0b
SP		 410}
411
39a98554 412/**
413 * megasas_adp_reset_ppc - For controller reset
414 * @regs: MFI register set
415 */
416static int
417megasas_adp_reset_ppc(struct megasas_instance *instance,
418 struct megasas_register_set __iomem *regs)
419{
420 return 0;
421}
422
423/**
424 * megasas_check_reset_ppc - For controller reset check
425 * @regs: MFI register set
426 */
427static int
428megasas_check_reset_ppc(struct megasas_instance *instance,
429 struct megasas_register_set __iomem *regs)
430{
431 return 0;
432}
f9876f0b
SP		 433static struct megasas_instance_template megasas_instance_template_ppc = {
434
435 .fire_cmd = megasas_fire_cmd_ppc,
436 .enable_intr = megasas_enable_intr_ppc,
b274cab7 437 .disable_intr = megasas_disable_intr_ppc,
f9876f0b
SP		 438 .clear_intr = megasas_clear_intr_ppc,
439 .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
39a98554 440 .adp_reset = megasas_adp_reset_ppc,
441 .check_reset = megasas_check_reset_ppc,
f9876f0b
SP		 442};
443
87911122
YB		 444/**
445 * megasas_enable_intr_skinny - Enables interrupts
446 * @regs: MFI register set
447 */
448static inline void
449megasas_enable_intr_skinny(struct megasas_register_set __iomem *regs)
450{
451 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
452
453 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
454
455 /* Dummy readl to force pci flush */
456 readl(&regs->outbound_intr_mask);
457}
458
459/**
460 * megasas_disable_intr_skinny - Disables interrupt
461 * @regs: MFI register set
462 */
463static inline void
464megasas_disable_intr_skinny(struct megasas_register_set __iomem *regs)
465{
466 u32 mask = 0xFFFFFFFF;
467 writel(mask, &regs->outbound_intr_mask);
468 /* Dummy readl to force pci flush */
469 readl(&regs->outbound_intr_mask);
470}
471
472/**
473 * megasas_read_fw_status_reg_skinny - returns the current FW status value
474 * @regs: MFI register set
475 */
476static u32
477megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs)
478{
479 return readl(&(regs)->outbound_scratch_pad);
480}
481
482/**
483 * megasas_clear_interrupt_skinny - Check & clear interrupt
484 * @regs: MFI register set
485 */
486static int
487megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs)
488{
489 u32 status;
490 /*
491 * Check if it is our interrupt
492 */
493 status = readl(&regs->outbound_intr_status);
494
495 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
39a98554 496 return 0;
87911122
YB		 497 }
498
499 /*
500 * Clear the interrupt by writing back the same value
501 */
502 writel(status, &regs->outbound_intr_status);
503
504 /*
505 * dummy read to flush PCI
506 */
507 readl(&regs->outbound_intr_status);
508
39a98554 509 return 1;
87911122
YB		 510}
511
512/**
513 * megasas_fire_cmd_skinny - Sends command to the FW
514 * @frame_phys_addr : Physical address of cmd
515 * @frame_count : Number of frames for the command
516 * @regs : MFI register set
517 */
518static inline void
0c79e681
YB		 519megasas_fire_cmd_skinny(struct megasas_instance *instance,
520 dma_addr_t frame_phys_addr,
521 u32 frame_count,
87911122
YB		 522 struct megasas_register_set __iomem *regs)
523{
0c79e681 524 unsigned long flags;
39a98554 525 spin_lock_irqsave(&instance->hba_lock, flags);
87911122
YB		 526 writel(0, &(regs)->inbound_high_queue_port);
527 writel((frame_phys_addr | (frame_count<<1))|1,
528 &(regs)->inbound_low_queue_port);
39a98554 529 spin_unlock_irqrestore(&instance->hba_lock, flags);
530}
531
532/**
533 * megasas_adp_reset_skinny - For controller reset
534 * @regs: MFI register set
535 */
536static int
537megasas_adp_reset_skinny(struct megasas_instance *instance,
538 struct megasas_register_set __iomem *regs)
539{
540 return 0;
541}
542
543/**
544 * megasas_check_reset_skinny - For controller reset check
545 * @regs: MFI register set
546 */
547static int
548megasas_check_reset_skinny(struct megasas_instance *instance,
549 struct megasas_register_set __iomem *regs)
550{
551 return 0;
87911122
YB		 552}
553
554static struct megasas_instance_template megasas_instance_template_skinny = {
555
556 .fire_cmd = megasas_fire_cmd_skinny,
557 .enable_intr = megasas_enable_intr_skinny,
558 .disable_intr = megasas_disable_intr_skinny,
559 .clear_intr = megasas_clear_intr_skinny,
560 .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
39a98554 561 .adp_reset = megasas_adp_reset_skinny,
562 .check_reset = megasas_check_reset_skinny,
87911122
YB		 563};
564
565
6610a6b3
YB		 566/**
567* The following functions are defined for gen2 (deviceid : 0x78 0x79)
568* controllers
569*/
570
571/**
572 * megasas_enable_intr_gen2 - Enables interrupts
573 * @regs: MFI register set
574 */
575static inline void
576megasas_enable_intr_gen2(struct megasas_register_set __iomem *regs)
577{
578 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
579
580 /* write ~0x00000005 (4 & 1) to the intr mask*/
581 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
582
583 /* Dummy readl to force pci flush */
584 readl(&regs->outbound_intr_mask);
585}
586
587/**
588 * megasas_disable_intr_gen2 - Disables interrupt
589 * @regs: MFI register set
590 */
591static inline void
592megasas_disable_intr_gen2(struct megasas_register_set __iomem *regs)
593{
594 u32 mask = 0xFFFFFFFF;
595 writel(mask, &regs->outbound_intr_mask);
596 /* Dummy readl to force pci flush */
597 readl(&regs->outbound_intr_mask);
598}
599
600/**
601 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
602 * @regs: MFI register set
603 */
604static u32
605megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs)
606{
607 return readl(&(regs)->outbound_scratch_pad);
608}
609
610/**
611 * megasas_clear_interrupt_gen2 - Check & clear interrupt
612 * @regs: MFI register set
613 */
614static int
615megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs)
616{
617 u32 status;
39a98554 618 u32 mfiStatus = 0;
6610a6b3
YB		 619 /*
620 * Check if it is our interrupt
621 */
622 status = readl(&regs->outbound_intr_status);
623
39a98554 624 if (status & MFI_GEN2_ENABLE_INTERRUPT_MASK) {
625 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
626 }
627 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
628 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
629 }
6610a6b3
YB		 630
631 /*
632 * Clear the interrupt by writing back the same value
633 */
39a98554 634 if (mfiStatus)
635 writel(status, &regs->outbound_doorbell_clear);
6610a6b3
YB		 636
637 /* Dummy readl to force pci flush */
638 readl(&regs->outbound_intr_status);
639
39a98554 640 return mfiStatus;
6610a6b3
YB		 641}
642/**
643 * megasas_fire_cmd_gen2 - Sends command to the FW
644 * @frame_phys_addr : Physical address of cmd
645 * @frame_count : Number of frames for the command
646 * @regs : MFI register set
647 */
648static inline void
0c79e681
YB		 649megasas_fire_cmd_gen2(struct megasas_instance *instance,
650 dma_addr_t frame_phys_addr,
651 u32 frame_count,
6610a6b3
YB		 652 struct megasas_register_set __iomem *regs)
653{
39a98554 654 unsigned long flags;
655 spin_lock_irqsave(&instance->hba_lock, flags);
6610a6b3
YB		 656 writel((frame_phys_addr | (frame_count<<1))|1,
657 &(regs)->inbound_queue_port);
39a98554 658 spin_unlock_irqrestore(&instance->hba_lock, flags);
659}
660
661/**
662 * megasas_adp_reset_gen2 - For controller reset
663 * @regs: MFI register set
664 */
665static int
666megasas_adp_reset_gen2(struct megasas_instance *instance,
667 struct megasas_register_set __iomem *reg_set)
668{
669 u32 retry = 0 ;
670 u32 HostDiag;
671
672 writel(0, &reg_set->seq_offset);
673 writel(4, &reg_set->seq_offset);
674 writel(0xb, &reg_set->seq_offset);
675 writel(2, &reg_set->seq_offset);
676 writel(7, &reg_set->seq_offset);
677 writel(0xd, &reg_set->seq_offset);
678 msleep(1000);
679
680 HostDiag = (u32)readl(&reg_set->host_diag);
681
682 while ( !( HostDiag & DIAG_WRITE_ENABLE) ) {
683 msleep(100);
684 HostDiag = (u32)readl(&reg_set->host_diag);
685 printk(KERN_NOTICE "RESETGEN2: retry=%x, hostdiag=%x\n",
686 retry, HostDiag);
687
688 if (retry++ >= 100)
689 return 1;
690
691 }
692
693 printk(KERN_NOTICE "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
694
695 writel((HostDiag | DIAG_RESET_ADAPTER), &reg_set->host_diag);
696
697 ssleep(10);
698
699 HostDiag = (u32)readl(&reg_set->host_diag);
700 while ( ( HostDiag & DIAG_RESET_ADAPTER) ) {
701 msleep(100);
702 HostDiag = (u32)readl(&reg_set->host_diag);
703 printk(KERN_NOTICE "RESET_GEN2: retry=%x, hostdiag=%x\n",
704 retry, HostDiag);
705
706 if (retry++ >= 1000)
707 return 1;
708
709 }
710 return 0;
711}
712
713/**
714 * megasas_check_reset_gen2 - For controller reset check
715 * @regs: MFI register set
716 */
717static int
718megasas_check_reset_gen2(struct megasas_instance *instance,
719 struct megasas_register_set __iomem *regs)
720{
721 return 0;
6610a6b3
YB		 722}
723
724static struct megasas_instance_template megasas_instance_template_gen2 = {
725
726 .fire_cmd = megasas_fire_cmd_gen2,
727 .enable_intr = megasas_enable_intr_gen2,
728 .disable_intr = megasas_disable_intr_gen2,
729 .clear_intr = megasas_clear_intr_gen2,
730 .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
39a98554 731 .adp_reset = megasas_adp_reset_gen2,
732 .check_reset = megasas_check_reset_gen2,
6610a6b3
YB		 733};
734
f9876f0b
SP		 735/**
736* This is the end of set of functions & definitions
39a98554 737* specific to gen2 (deviceid : 0x78, 0x79) controllers
f9876f0b
SP		 738*/
739
c4a3e0a5
BS		 740/**
741 * megasas_issue_polled - Issues a polling command
742 * @instance: Adapter soft state
743 * @cmd: Command packet to be issued
744 *
745 * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
746 */
747static int
748megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
749{
750 int i;
751 u32 msecs = MFI_POLL_TIMEOUT_SECS * 1000;
752
753 struct megasas_header *frame_hdr = &cmd->frame->hdr;
754
755 frame_hdr->cmd_status = 0xFF;
756 frame_hdr->flags |= MFI_FRAME_DONT_POST_IN_REPLY_QUEUE;
757
758 /*
759 * Issue the frame using inbound queue port
760 */
0c79e681
YB		 761 instance->instancet->fire_cmd(instance,
762 cmd->frame_phys_addr, 0, instance->reg_set);
c4a3e0a5
BS		 763
764 /*
765 * Wait for cmd_status to change
766 */
767 for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i++) {
768 rmb();
769 msleep(1);
770 }
771
772 if (frame_hdr->cmd_status == 0xff)
773 return -ETIME;
774
775 return 0;
776}
777
778/**
779 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds
780 * @instance: Adapter soft state
781 * @cmd: Command to be issued
782 *
783 * This function waits on an event for the command to be returned from ISR.
2a3681e5 784 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
c4a3e0a5
BS		 785 * Used to issue ioctl commands.
786 */
787static int
788megasas_issue_blocked_cmd(struct megasas_instance *instance,
789 struct megasas_cmd *cmd)
790{
791 cmd->cmd_status = ENODATA;
792
0c79e681
YB		 793 instance->instancet->fire_cmd(instance,
794 cmd->frame_phys_addr, 0, instance->reg_set);
c4a3e0a5 795
39a98554 796 wait_event(instance->int_cmd_wait_q, cmd->cmd_status != ENODATA);
c4a3e0a5
BS		 797
798 return 0;
799}
800
801/**
802 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd
803 * @instance: Adapter soft state
804 * @cmd_to_abort: Previously issued cmd to be aborted
805 *
806 * MFI firmware can abort previously issued AEN comamnd (automatic event
807 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
2a3681e5
SP		 808 * cmd and waits for return status.
809 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
c4a3e0a5
BS		 810 */
811static int
812megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
813 struct megasas_cmd *cmd_to_abort)
814{
815 struct megasas_cmd *cmd;
816 struct megasas_abort_frame *abort_fr;
817
818 cmd = megasas_get_cmd(instance);
819
820 if (!cmd)
821 return -1;
822
823 abort_fr = &cmd->frame->abort;
824
825 /*
826 * Prepare and issue the abort frame
827 */
828 abort_fr->cmd = MFI_CMD_ABORT;
829 abort_fr->cmd_status = 0xFF;
830 abort_fr->flags = 0;
831 abort_fr->abort_context = cmd_to_abort->index;
832 abort_fr->abort_mfi_phys_addr_lo = cmd_to_abort->frame_phys_addr;
833 abort_fr->abort_mfi_phys_addr_hi = 0;
834
835 cmd->sync_cmd = 1;
836 cmd->cmd_status = 0xFF;
837
0c79e681
YB		 838 instance->instancet->fire_cmd(instance,
839 cmd->frame_phys_addr, 0, instance->reg_set);
c4a3e0a5
BS		 840
841 /*
842 * Wait for this cmd to complete
843 */
39a98554 844 wait_event(instance->abort_cmd_wait_q, cmd->cmd_status != 0xFF);
845 cmd->sync_cmd = 0;
c4a3e0a5
BS		 846
847 megasas_return_cmd(instance, cmd);
848 return 0;
849}
850
851/**
852 * megasas_make_sgl32 - Prepares 32-bit SGL
853 * @instance: Adapter soft state
854 * @scp: SCSI command from the mid-layer
855 * @mfi_sgl: SGL to be filled in
856 *
857 * If successful, this function returns the number of SG elements. Otherwise,
858 * it returnes -1.
859 */
858119e1 860static int
c4a3e0a5
BS		 861megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
862 union megasas_sgl *mfi_sgl)
863{
864 int i;
865 int sge_count;
866 struct scatterlist *os_sgl;
867
155d98f0
FT		 868 sge_count = scsi_dma_map(scp);
869 BUG_ON(sge_count < 0);
c4a3e0a5 870
155d98f0
FT		 871 if (sge_count) {
872 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
873 mfi_sgl->sge32[i].length = sg_dma_len(os_sgl);
874 mfi_sgl->sge32[i].phys_addr = sg_dma_address(os_sgl);
875 }
c4a3e0a5 876 }
c4a3e0a5
BS		 877 return sge_count;
878}
879
880/**
881 * megasas_make_sgl64 - Prepares 64-bit SGL
882 * @instance: Adapter soft state
883 * @scp: SCSI command from the mid-layer
884 * @mfi_sgl: SGL to be filled in
885 *
886 * If successful, this function returns the number of SG elements. Otherwise,
887 * it returnes -1.
888 */
858119e1 889static int
c4a3e0a5
BS		 890megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
891 union megasas_sgl *mfi_sgl)
892{
893 int i;
894 int sge_count;
895 struct scatterlist *os_sgl;
896
155d98f0
FT		 897 sge_count = scsi_dma_map(scp);
898 BUG_ON(sge_count < 0);
c4a3e0a5 899
155d98f0
FT		 900 if (sge_count) {
901 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
902 mfi_sgl->sge64[i].length = sg_dma_len(os_sgl);
903 mfi_sgl->sge64[i].phys_addr = sg_dma_address(os_sgl);
904 }
c4a3e0a5 905 }
c4a3e0a5
BS		 906 return sge_count;
907}
908
f4c9a131
YB		 909/**
910 * megasas_make_sgl_skinny - Prepares IEEE SGL
911 * @instance: Adapter soft state
912 * @scp: SCSI command from the mid-layer
913 * @mfi_sgl: SGL to be filled in
914 *
915 * If successful, this function returns the number of SG elements. Otherwise,
916 * it returnes -1.
917 */
918static int
919megasas_make_sgl_skinny(struct megasas_instance *instance,
920 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
921{
922 int i;
923 int sge_count;
924 struct scatterlist *os_sgl;
925
926 sge_count = scsi_dma_map(scp);
927
928 if (sge_count) {
929 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
930 mfi_sgl->sge_skinny[i].length = sg_dma_len(os_sgl);
931 mfi_sgl->sge_skinny[i].phys_addr =
932 sg_dma_address(os_sgl);
933 }
934 }
935 return sge_count;
936}
937
b1df99d9
SP		 938 /**
939 * megasas_get_frame_count - Computes the number of frames
d532dbe2 940 * @frame_type : type of frame- io or pthru frame
b1df99d9
SP		 941 * @sge_count : number of sg elements
942 *
943 * Returns the number of frames required for numnber of sge's (sge_count)
944 */
945
f4c9a131
YB		 946static u32 megasas_get_frame_count(struct megasas_instance *instance,
947 u8 sge_count, u8 frame_type)
b1df99d9
SP		 948{
949 int num_cnt;
950 int sge_bytes;
951 u32 sge_sz;
952 u32 frame_count=0;
953
954 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
955 sizeof(struct megasas_sge32);
956
f4c9a131
YB		 957 if (instance->flag_ieee) {
958 sge_sz = sizeof(struct megasas_sge_skinny);
959 }
960
b1df99d9 961 /*
d532dbe2 962 * Main frame can contain 2 SGEs for 64-bit SGLs and
963 * 3 SGEs for 32-bit SGLs for ldio &
964 * 1 SGEs for 64-bit SGLs and
965 * 2 SGEs for 32-bit SGLs for pthru frame
966 */
967 if (unlikely(frame_type == PTHRU_FRAME)) {
f4c9a131
YB		 968 if (instance->flag_ieee == 1) {
969 num_cnt = sge_count - 1;
970 } else if (IS_DMA64)
d532dbe2 971 num_cnt = sge_count - 1;
972 else
973 num_cnt = sge_count - 2;
974 } else {
f4c9a131
YB		 975 if (instance->flag_ieee == 1) {
976 num_cnt = sge_count - 1;
977 } else if (IS_DMA64)
d532dbe2 978 num_cnt = sge_count - 2;
979 else
980 num_cnt = sge_count - 3;
981 }
b1df99d9
SP		 982
983 if(num_cnt>0){
984 sge_bytes = sge_sz * num_cnt;
985
986 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
987 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
988 }
989 /* Main frame */
990 frame_count +=1;
991
992 if (frame_count > 7)
993 frame_count = 8;
994 return frame_count;
995}
996
c4a3e0a5
BS		 997/**
998 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
999 * @instance: Adapter soft state
1000 * @scp: SCSI command
1001 * @cmd: Command to be prepared in
1002 *
1003 * This function prepares CDB commands. These are typcially pass-through
1004 * commands to the devices.
1005 */
858119e1 1006static int
c4a3e0a5
BS		 1007megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1008 struct megasas_cmd *cmd)
1009{
c4a3e0a5
BS		 1010 u32 is_logical;
1011 u32 device_id;
1012 u16 flags = 0;
1013 struct megasas_pthru_frame *pthru;
1014
1015 is_logical = MEGASAS_IS_LOGICAL(scp);
1016 device_id = MEGASAS_DEV_INDEX(instance, scp);
1017 pthru = (struct megasas_pthru_frame *)cmd->frame;
1018
1019 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1020 flags = MFI_FRAME_DIR_WRITE;
1021 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1022 flags = MFI_FRAME_DIR_READ;
1023 else if (scp->sc_data_direction == PCI_DMA_NONE)
1024 flags = MFI_FRAME_DIR_NONE;
1025
f4c9a131
YB		 1026 if (instance->flag_ieee == 1) {
1027 flags |= MFI_FRAME_IEEE;
1028 }
1029
c4a3e0a5
BS		 1030 /*
1031 * Prepare the DCDB frame
1032 */
1033 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1034 pthru->cmd_status = 0x0;
1035 pthru->scsi_status = 0x0;
1036 pthru->target_id = device_id;
1037 pthru->lun = scp->device->lun;
1038 pthru->cdb_len = scp->cmd_len;
1039 pthru->timeout = 0;
780a3762 1040 pthru->pad_0 = 0;
c4a3e0a5 1041 pthru->flags = flags;
155d98f0 1042 pthru->data_xfer_len = scsi_bufflen(scp);
c4a3e0a5
BS		 1043
1044 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1045
8d568253
YB		 1046 /*
1047 * If the command is for the tape device, set the
1048 * pthru timeout to the os layer timeout value.
1049 */
1050 if (scp->device->type == TYPE_TAPE) {
1051 if ((scp->request->timeout / HZ) > 0xFFFF)
1052 pthru->timeout = 0xFFFF;
1053 else
1054 pthru->timeout = scp->request->timeout / HZ;
1055 }
1056
c4a3e0a5
BS		 1057 /*
1058 * Construct SGL
1059 */
f4c9a131
YB		 1060 if (instance->flag_ieee == 1) {
1061 pthru->flags |= MFI_FRAME_SGL64;
1062 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1063 &pthru->sgl);
1064 } else if (IS_DMA64) {
c4a3e0a5
BS		 1065 pthru->flags |= MFI_FRAME_SGL64;
1066 pthru->sge_count = megasas_make_sgl64(instance, scp,
1067 &pthru->sgl);
1068 } else
1069 pthru->sge_count = megasas_make_sgl32(instance, scp,
1070 &pthru->sgl);
1071
bdc6fb8d
YB		 1072 if (pthru->sge_count > instance->max_num_sge) {
1073 printk(KERN_ERR "megasas: DCDB two many SGE NUM=%x\n",
1074 pthru->sge_count);
1075 return 0;
1076 }
1077
c4a3e0a5
BS		 1078 /*
1079 * Sense info specific
1080 */
1081 pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1082 pthru->sense_buf_phys_addr_hi = 0;
1083 pthru->sense_buf_phys_addr_lo = cmd->sense_phys_addr;
1084
c4a3e0a5
BS		 1085 /*
1086 * Compute the total number of frames this command consumes. FW uses
1087 * this number to pull sufficient number of frames from host memory.
1088 */
f4c9a131 1089 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
d532dbe2 1090 PTHRU_FRAME);
c4a3e0a5
BS		 1091
1092 return cmd->frame_count;
1093}
1094
1095/**
1096 * megasas_build_ldio - Prepares IOs to logical devices
1097 * @instance: Adapter soft state
1098 * @scp: SCSI command
fd589a8f 1099 * @cmd: Command to be prepared
c4a3e0a5
BS		 1100 *
1101 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1102 */
858119e1 1103static int
c4a3e0a5
BS		 1104megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1105 struct megasas_cmd *cmd)
1106{
c4a3e0a5
BS		 1107 u32 device_id;
1108 u8 sc = scp->cmnd[0];
1109 u16 flags = 0;
1110 struct megasas_io_frame *ldio;
1111
1112 device_id = MEGASAS_DEV_INDEX(instance, scp);
1113 ldio = (struct megasas_io_frame *)cmd->frame;
1114
1115 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1116 flags = MFI_FRAME_DIR_WRITE;
1117 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1118 flags = MFI_FRAME_DIR_READ;
1119
f4c9a131
YB		 1120 if (instance->flag_ieee == 1) {
1121 flags |= MFI_FRAME_IEEE;
1122 }
1123
c4a3e0a5 1124 /*
b1df99d9 1125 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
c4a3e0a5
BS		 1126 */
1127 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1128 ldio->cmd_status = 0x0;
1129 ldio->scsi_status = 0x0;
1130 ldio->target_id = device_id;
1131 ldio->timeout = 0;
1132 ldio->reserved_0 = 0;
1133 ldio->pad_0 = 0;
1134 ldio->flags = flags;
1135 ldio->start_lba_hi = 0;
1136 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1137
1138 /*
1139 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1140 */
1141 if (scp->cmd_len == 6) {
1142 ldio->lba_count = (u32) scp->cmnd[4];
1143 ldio->start_lba_lo = ((u32) scp->cmnd[1] << 16) |
1144 ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
1145
1146 ldio->start_lba_lo &= 0x1FFFFF;
1147 }
1148
1149 /*
1150 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1151 */
1152 else if (scp->cmd_len == 10) {
1153 ldio->lba_count = (u32) scp->cmnd[8] |
1154 ((u32) scp->cmnd[7] << 8);
1155 ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1156 ((u32) scp->cmnd[3] << 16) |
1157 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1158 }
1159
1160 /*
1161 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1162 */
1163 else if (scp->cmd_len == 12) {
1164 ldio->lba_count = ((u32) scp->cmnd[6] << 24) |
1165 ((u32) scp->cmnd[7] << 16) |
1166 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1167
1168 ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1169 ((u32) scp->cmnd[3] << 16) |
1170 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1171 }
1172
1173 /*
1174 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1175 */
1176 else if (scp->cmd_len == 16) {
1177 ldio->lba_count = ((u32) scp->cmnd[10] << 24) |
1178 ((u32) scp->cmnd[11] << 16) |
1179 ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
1180
1181 ldio->start_lba_lo = ((u32) scp->cmnd[6] << 24) |
1182 ((u32) scp->cmnd[7] << 16) |
1183 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1184
1185 ldio->start_lba_hi = ((u32) scp->cmnd[2] << 24) |
1186 ((u32) scp->cmnd[3] << 16) |
1187 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1188
1189 }
1190
1191 /*
1192 * Construct SGL
1193 */
f4c9a131
YB		 1194 if (instance->flag_ieee) {
1195 ldio->flags |= MFI_FRAME_SGL64;
1196 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1197 &ldio->sgl);
1198 } else if (IS_DMA64) {
c4a3e0a5
BS		 1199 ldio->flags |= MFI_FRAME_SGL64;
1200 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1201 } else
1202 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1203
bdc6fb8d
YB		 1204 if (ldio->sge_count > instance->max_num_sge) {
1205 printk(KERN_ERR "megasas: build_ld_io: sge_count = %x\n",
1206 ldio->sge_count);
1207 return 0;
1208 }
1209
c4a3e0a5
BS		 1210 /*
1211 * Sense info specific
1212 */
1213 ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1214 ldio->sense_buf_phys_addr_hi = 0;
1215 ldio->sense_buf_phys_addr_lo = cmd->sense_phys_addr;
1216
b1df99d9
SP		 1217 /*
1218 * Compute the total number of frames this command consumes. FW uses
1219 * this number to pull sufficient number of frames from host memory.
1220 */
f4c9a131
YB		 1221 cmd->frame_count = megasas_get_frame_count(instance,
1222 ldio->sge_count, IO_FRAME);
c4a3e0a5
BS		 1223
1224 return cmd->frame_count;
1225}
1226
1227/**
cb59aa6a
SP		 1228 * megasas_is_ldio - Checks if the cmd is for logical drive
1229 * @scmd: SCSI command
1230 *
1231 * Called by megasas_queue_command to find out if the command to be queued
1232 * is a logical drive command
c4a3e0a5 1233 */
cb59aa6a 1234static inline int megasas_is_ldio(struct scsi_cmnd *cmd)
c4a3e0a5 1235{
cb59aa6a
SP		 1236 if (!MEGASAS_IS_LOGICAL(cmd))
1237 return 0;
1238 switch (cmd->cmnd[0]) {
1239 case READ_10:
1240 case WRITE_10:
1241 case READ_12:
1242 case WRITE_12:
1243 case READ_6:
1244 case WRITE_6:
1245 case READ_16:
1246 case WRITE_16:
1247 return 1;
1248 default:
1249 return 0;
c4a3e0a5 1250 }
c4a3e0a5
BS		 1251}
1252
658dcedb
SP		 1253 /**
1254 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
1255 * in FW
1256 * @instance: Adapter soft state
1257 */
1258static inline void
1259megasas_dump_pending_frames(struct megasas_instance *instance)
1260{
1261 struct megasas_cmd *cmd;
1262 int i,n;
1263 union megasas_sgl *mfi_sgl;
1264 struct megasas_io_frame *ldio;
1265 struct megasas_pthru_frame *pthru;
1266 u32 sgcount;
1267 u32 max_cmd = instance->max_fw_cmds;
1268
1269 printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1270 printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1271 if (IS_DMA64)
1272 printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1273 else
1274 printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1275
1276 printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1277 for (i = 0; i < max_cmd; i++) {
1278 cmd = instance->cmd_list[i];
1279 if(!cmd->scmd)
1280 continue;
1281 printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1282 if (megasas_is_ldio(cmd->scmd)){
1283 ldio = (struct megasas_io_frame *)cmd->frame;
1284 mfi_sgl = &ldio->sgl;
1285 sgcount = ldio->sge_count;
1286 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",instance->host->host_no, cmd->frame_count,ldio->cmd,ldio->target_id, ldio->start_lba_lo,ldio->start_lba_hi,ldio->sense_buf_phys_addr_lo,sgcount);
1287 }
1288 else {
1289 pthru = (struct megasas_pthru_frame *) cmd->frame;
1290 mfi_sgl = &pthru->sgl;
1291 sgcount = pthru->sge_count;
1292 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",instance->host->host_no,cmd->frame_count,pthru->cmd,pthru->target_id,pthru->lun,pthru->cdb_len , pthru->data_xfer_len,pthru->sense_buf_phys_addr_lo,sgcount);
1293 }
1294 if(megasas_dbg_lvl & MEGASAS_DBG_LVL){
1295 for (n = 0; n < sgcount; n++){
1296 if (IS_DMA64)
1297 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%08lx ",mfi_sgl->sge64[n].length , (unsigned long)mfi_sgl->sge64[n].phys_addr) ;
1298 else
1299 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ",mfi_sgl->sge32[n].length , mfi_sgl->sge32[n].phys_addr) ;
1300 }
1301 }
1302 printk(KERN_ERR "\n");
1303 } /*for max_cmd*/
1304 printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1305 for (i = 0; i < max_cmd; i++) {
1306
1307 cmd = instance->cmd_list[i];
1308
1309 if(cmd->sync_cmd == 1){
1310 printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1311 }
1312 }
1313 printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no);
1314}
1315
c4a3e0a5
BS		 1316/**
1317 * megasas_queue_command - Queue entry point
1318 * @scmd: SCSI command to be queued
1319 * @done: Callback entry point
1320 */
1321static int
1322megasas_queue_command(struct scsi_cmnd *scmd, void (*done) (struct scsi_cmnd *))
1323{
1324 u32 frame_count;
c4a3e0a5
BS		 1325 struct megasas_cmd *cmd;
1326 struct megasas_instance *instance;
39a98554 1327 unsigned long flags;
c4a3e0a5
BS		 1328
1329 instance = (struct megasas_instance *)
1330 scmd->device->host->hostdata;
af37acfb 1331
39a98554 1332 if (instance->issuepend_done == 0)
af37acfb
SP		 1333 return SCSI_MLQUEUE_HOST_BUSY;
1334
39a98554 1335 spin_lock_irqsave(&instance->hba_lock, flags);
1336 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
1337 spin_unlock_irqrestore(&instance->hba_lock, flags);
1338 return SCSI_MLQUEUE_HOST_BUSY;
1339 }
1340
1341 spin_unlock_irqrestore(&instance->hba_lock, flags);
1342
c4a3e0a5
BS		 1343 scmd->scsi_done = done;
1344 scmd->result = 0;
1345
cb59aa6a
SP		 1346 if (MEGASAS_IS_LOGICAL(scmd) &&
1347 (scmd->device->id >= MEGASAS_MAX_LD || scmd->device->lun)) {
1348 scmd->result = DID_BAD_TARGET << 16;
1349 goto out_done;
c4a3e0a5
BS		 1350 }
1351
02b01e01
SP		 1352 switch (scmd->cmnd[0]) {
1353 case SYNCHRONIZE_CACHE:
1354 /*
1355 * FW takes care of flush cache on its own
1356 * No need to send it down
1357 */
1358 scmd->result = DID_OK << 16;
1359 goto out_done;
1360 default:
1361 break;
1362 }
1363
cb59aa6a
SP		 1364 cmd = megasas_get_cmd(instance);
1365 if (!cmd)
1366 return SCSI_MLQUEUE_HOST_BUSY;
1367
1368 /*
1369 * Logical drive command
1370 */
1371 if (megasas_is_ldio(scmd))
1372 frame_count = megasas_build_ldio(instance, scmd, cmd);
1373 else
1374 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1375
1376 if (!frame_count)
1377 goto out_return_cmd;
1378
c4a3e0a5 1379 cmd->scmd = scmd;
05e9ebbe 1380 scmd->SCp.ptr = (char *)cmd;
c4a3e0a5
BS		 1381
1382 /*
1383 * Issue the command to the FW
1384 */
e4a082c7 1385 atomic_inc(&instance->fw_outstanding);
c4a3e0a5 1386
0c79e681
YB		 1387 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1388 cmd->frame_count-1, instance->reg_set);
ad84db2e 1389 /*
1390 * Check if we have pend cmds to be completed
1391 */
1392 if (poll_mode_io && atomic_read(&instance->fw_outstanding))
1393 tasklet_schedule(&instance->isr_tasklet);
1394
c4a3e0a5
BS		 1395
1396 return 0;
cb59aa6a
SP		 1397
1398 out_return_cmd:
1399 megasas_return_cmd(instance, cmd);
1400 out_done:
1401 done(scmd);
1402 return 0;
c4a3e0a5
BS		 1403}
1404
044833b5
YB		 1405static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1406{
1407 int i;
1408
1409 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1410
1411 if ((megasas_mgmt_info.instance[i]) &&
1412 (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1413 return megasas_mgmt_info.instance[i];
1414 }
1415
1416 return NULL;
1417}
1418
147aab6a
CH		 1419static int megasas_slave_configure(struct scsi_device *sdev)
1420{
044833b5
YB		 1421 u16 pd_index = 0;
1422 struct megasas_instance *instance ;
1423
1424 instance = megasas_lookup_instance(sdev->host->host_no);
1425
147aab6a 1426 /*
044833b5
YB		 1427 * Don't export physical disk devices to the disk driver.
1428 *
1429 * FIXME: Currently we don't export them to the midlayer at all.
1430 * That will be fixed once LSI engineers have audited the
1431 * firmware for possible issues.
1432 */
1433 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS &&
1434 sdev->type == TYPE_DISK) {
1435 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1436 sdev->id;
1437 if (instance->pd_list[pd_index].driveState ==
1438 MR_PD_STATE_SYSTEM) {
1439 blk_queue_rq_timeout(sdev->request_queue,
1440 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
1441 return 0;
1442 }
147aab6a 1443 return -ENXIO;
044833b5 1444 }
e5b3a65f
CH		 1445
1446 /*
044833b5
YB		 1447 * The RAID firmware may require extended timeouts.
1448 */
1449 blk_queue_rq_timeout(sdev->request_queue,
1450 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
1451 return 0;
1452}
1453
1454static int megasas_slave_alloc(struct scsi_device *sdev)
1455{
1456 u16 pd_index = 0;
1457 struct megasas_instance *instance ;
1458 instance = megasas_lookup_instance(sdev->host->host_no);
1459 if ((sdev->channel < MEGASAS_MAX_PD_CHANNELS) &&
1460 (sdev->type == TYPE_DISK)) {
1461 /*
1462 * Open the OS scan to the SYSTEM PD
1463 */
1464 pd_index =
1465 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1466 sdev->id;
1467 if ((instance->pd_list[pd_index].driveState ==
1468 MR_PD_STATE_SYSTEM) &&
1469 (instance->pd_list[pd_index].driveType ==
1470 TYPE_DISK)) {
1471 return 0;
1472 }
1473 return -ENXIO;
1474 }
147aab6a
CH		 1475 return 0;
1476}
1477
39a98554 1478static void megaraid_sas_kill_hba(struct megasas_instance *instance)
1479{
1480 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1481 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
1482 writel(MFI_STOP_ADP,
1483 &instance->reg_set->reserved_0[0]);
1484 } else {
1485 writel(MFI_STOP_ADP,
1486 &instance->reg_set->inbound_doorbell);
1487 }
1488}
1489
7343eb65 1490/**
1491 * megasas_complete_cmd_dpc - Returns FW's controller structure
1492 * @instance_addr: Address of adapter soft state
1493 *
1494 * Tasklet to complete cmds
1495 */
1496static void megasas_complete_cmd_dpc(unsigned long instance_addr)
1497{
1498 u32 producer;
1499 u32 consumer;
1500 u32 context;
1501 struct megasas_cmd *cmd;
1502 struct megasas_instance *instance =
1503 (struct megasas_instance *)instance_addr;
1504 unsigned long flags;
1505
1506 /* If we have already declared adapter dead, donot complete cmds */
39a98554 1507 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR )
7343eb65 1508 return;
1509
1510 spin_lock_irqsave(&instance->completion_lock, flags);
1511
1512 producer = *instance->producer;
1513 consumer = *instance->consumer;
1514
1515 while (consumer != producer) {
1516 context = instance->reply_queue[consumer];
39a98554 1517 if (context >= instance->max_fw_cmds) {
1518 printk(KERN_ERR "Unexpected context value %x\n",
1519 context);
1520 BUG();
1521 }
7343eb65 1522
1523 cmd = instance->cmd_list[context];
1524
1525 megasas_complete_cmd(instance, cmd, DID_OK);
1526
1527 consumer++;
1528 if (consumer == (instance->max_fw_cmds + 1)) {
1529 consumer = 0;
1530 }
1531 }
1532
1533 *instance->consumer = producer;
1534
1535 spin_unlock_irqrestore(&instance->completion_lock, flags);
1536
1537 /*
1538 * Check if we can restore can_queue
1539 */
1540 if (instance->flag & MEGASAS_FW_BUSY
1541 && time_after(jiffies, instance->last_time + 5 * HZ)
1542 && atomic_read(&instance->fw_outstanding) < 17) {
1543
1544 spin_lock_irqsave(instance->host->host_lock, flags);
1545 instance->flag &= ~MEGASAS_FW_BUSY;
7bebf5c7
YB		 1546 if ((instance->pdev->device ==
1547 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1548 (instance->pdev->device ==
1549 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
1550 instance->host->can_queue =
1551 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
1552 } else
1553 instance->host->can_queue =
7343eb65 1554 instance->max_fw_cmds - MEGASAS_INT_CMDS;
1555
1556 spin_unlock_irqrestore(instance->host->host_lock, flags);
1557 }
1558}
1559
c4a3e0a5
BS		 1560/**
1561 * megasas_wait_for_outstanding - Wait for all outstanding cmds
1562 * @instance: Adapter soft state
1563 *
1564 * This function waits for upto MEGASAS_RESET_WAIT_TIME seconds for FW to
1565 * complete all its outstanding commands. Returns error if one or more IOs
1566 * are pending after this time period. It also marks the controller dead.
1567 */
1568static int megasas_wait_for_outstanding(struct megasas_instance *instance)
1569{
1570 int i;
39a98554 1571 u32 reset_index;
c4a3e0a5 1572 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
39a98554 1573 u8 adprecovery;
1574 unsigned long flags;
1575 struct list_head clist_local;
1576 struct megasas_cmd *reset_cmd;
1577
1578 spin_lock_irqsave(&instance->hba_lock, flags);
1579 adprecovery = instance->adprecovery;
1580 spin_unlock_irqrestore(&instance->hba_lock, flags);
1581
1582 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
1583
1584 INIT_LIST_HEAD(&clist_local);
1585 spin_lock_irqsave(&instance->hba_lock, flags);
1586 list_splice_init(&instance->internal_reset_pending_q,
1587 &clist_local);
1588 spin_unlock_irqrestore(&instance->hba_lock, flags);
1589
1590 printk(KERN_NOTICE "megasas: HBA reset wait ...\n");
1591 for (i = 0; i < wait_time; i++) {
1592 msleep(1000);
1593 spin_lock_irqsave(&instance->hba_lock, flags);
1594 adprecovery = instance->adprecovery;
1595 spin_unlock_irqrestore(&instance->hba_lock, flags);
1596 if (adprecovery == MEGASAS_HBA_OPERATIONAL)
1597 break;
1598 }
1599
1600 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
1601 printk(KERN_NOTICE "megasas: reset: Stopping HBA.\n");
1602 spin_lock_irqsave(&instance->hba_lock, flags);
1603 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
1604 spin_unlock_irqrestore(&instance->hba_lock, flags);
1605 return FAILED;
1606 }
1607
1608 reset_index = 0;
1609 while (!list_empty(&clist_local)) {
1610 reset_cmd = list_entry((&clist_local)->next,
1611 struct megasas_cmd, list);
1612 list_del_init(&reset_cmd->list);
1613 if (reset_cmd->scmd) {
1614 reset_cmd->scmd->result = DID_RESET << 16;
1615 printk(KERN_NOTICE "%d:%p reset [%02x], %#lx\n",
1616 reset_index, reset_cmd,
1617 reset_cmd->scmd->cmnd[0],
1618 reset_cmd->scmd->serial_number);
1619
1620 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
1621 megasas_return_cmd(instance, reset_cmd);
1622 } else if (reset_cmd->sync_cmd) {
1623 printk(KERN_NOTICE "megasas:%p synch cmds"
1624 "reset queue\n",
1625 reset_cmd);
1626
1627 reset_cmd->cmd_status = ENODATA;
1628 instance->instancet->fire_cmd(instance,
1629 reset_cmd->frame_phys_addr,
1630 0, instance->reg_set);
1631 } else {
1632 printk(KERN_NOTICE "megasas: %p unexpected"
1633 "cmds lst\n",
1634 reset_cmd);
1635 }
1636 reset_index++;
1637 }
1638
1639 return SUCCESS;
1640 }
c4a3e0a5
BS		 1641
1642 for (i = 0; i < wait_time; i++) {
1643
e4a082c7
SP		 1644 int outstanding = atomic_read(&instance->fw_outstanding);
1645
1646 if (!outstanding)
c4a3e0a5
BS		 1647 break;
1648
1649 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
1650 printk(KERN_NOTICE "megasas: [%2d]waiting for %d "
e4a082c7 1651 "commands to complete\n",i,outstanding);
7343eb65 1652 /*
1653 * Call cmd completion routine. Cmd to be
1654 * be completed directly without depending on isr.
1655 */
1656 megasas_complete_cmd_dpc((unsigned long)instance);
c4a3e0a5
BS		 1657 }
1658
1659 msleep(1000);
1660 }
1661
e4a082c7 1662 if (atomic_read(&instance->fw_outstanding)) {
39a98554 1663 printk(KERN_NOTICE "megaraid_sas: pending cmds after reset\n");
e3bbff9f
SP		 1664 /*
1665 * Send signal to FW to stop processing any pending cmds.
1666 * The controller will be taken offline by the OS now.
1667 */
0c79e681
YB		 1668 if ((instance->pdev->device ==
1669 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1670 (instance->pdev->device ==
1671 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
1672 writel(MFI_STOP_ADP,
1673 &instance->reg_set->reserved_0[0]);
1674 } else {
1675 writel(MFI_STOP_ADP,
e3bbff9f 1676 &instance->reg_set->inbound_doorbell);
0c79e681 1677 }
658dcedb 1678 megasas_dump_pending_frames(instance);
39a98554 1679 spin_lock_irqsave(&instance->hba_lock, flags);
1680 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
1681 spin_unlock_irqrestore(&instance->hba_lock, flags);
c4a3e0a5
BS		 1682 return FAILED;
1683 }
1684
39a98554 1685 printk(KERN_NOTICE "megaraid_sas: no pending cmds after reset\n");
1686
c4a3e0a5
BS		 1687 return SUCCESS;
1688}
1689
1690/**
1691 * megasas_generic_reset - Generic reset routine
1692 * @scmd: Mid-layer SCSI command
1693 *
1694 * This routine implements a generic reset handler for device, bus and host
1695 * reset requests. Device, bus and host specific reset handlers can use this
1696 * function after they do their specific tasks.
1697 */
1698static int megasas_generic_reset(struct scsi_cmnd *scmd)
1699{
1700 int ret_val;
1701 struct megasas_instance *instance;
1702
1703 instance = (struct megasas_instance *)scmd->device->host->hostdata;
1704
05e9ebbe
SP		 1705 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET -%ld cmd=%x retries=%x\n",
1706 scmd->serial_number, scmd->cmnd[0], scmd->retries);
c4a3e0a5 1707
39a98554 1708 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
c4a3e0a5
BS		 1709 printk(KERN_ERR "megasas: cannot recover from previous reset "
1710 "failures\n");
1711 return FAILED;
1712 }
1713
c4a3e0a5 1714 ret_val = megasas_wait_for_outstanding(instance);
c4a3e0a5
BS		 1715 if (ret_val == SUCCESS)
1716 printk(KERN_NOTICE "megasas: reset successful \n");
1717 else
1718 printk(KERN_ERR "megasas: failed to do reset\n");
1719
c4a3e0a5
BS		 1720 return ret_val;
1721}
1722
05e9ebbe
SP		 1723/**
1724 * megasas_reset_timer - quiesce the adapter if required
1725 * @scmd: scsi cmnd
1726 *
1727 * Sets the FW busy flag and reduces the host->can_queue if the
1728 * cmd has not been completed within the timeout period.
1729 */
1730static enum
242f9dcb 1731blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
05e9ebbe
SP		 1732{
1733 struct megasas_cmd *cmd = (struct megasas_cmd *)scmd->SCp.ptr;
1734 struct megasas_instance *instance;
1735 unsigned long flags;
1736
1737 if (time_after(jiffies, scmd->jiffies_at_alloc +
1738 (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) {
242f9dcb 1739 return BLK_EH_NOT_HANDLED;
05e9ebbe
SP		 1740 }
1741
1742 instance = cmd->instance;
1743 if (!(instance->flag & MEGASAS_FW_BUSY)) {
1744 /* FW is busy, throttle IO */
1745 spin_lock_irqsave(instance->host->host_lock, flags);
1746
1747 instance->host->can_queue = 16;
1748 instance->last_time = jiffies;
1749 instance->flag |= MEGASAS_FW_BUSY;
1750
1751 spin_unlock_irqrestore(instance->host->host_lock, flags);
1752 }
242f9dcb 1753 return BLK_EH_RESET_TIMER;
05e9ebbe
SP		 1754}
1755
c4a3e0a5
BS		 1756/**
1757 * megasas_reset_device - Device reset handler entry point
1758 */
1759static int megasas_reset_device(struct scsi_cmnd *scmd)
1760{
1761 int ret;
1762
1763 /*
1764 * First wait for all commands to complete
1765 */
1766 ret = megasas_generic_reset(scmd);
1767
1768 return ret;
1769}
1770
1771/**
1772 * megasas_reset_bus_host - Bus & host reset handler entry point
1773 */
1774static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
1775{
1776 int ret;
1777
1778 /*
80682fa9 1779 * First wait for all commands to complete
c4a3e0a5
BS		 1780 */
1781 ret = megasas_generic_reset(scmd);
1782
1783 return ret;
1784}
1785
cf62a0a5
SP		 1786/**
1787 * megasas_bios_param - Returns disk geometry for a disk
1788 * @sdev: device handle
1789 * @bdev: block device
1790 * @capacity: drive capacity
1791 * @geom: geometry parameters
1792 */
1793static int
1794megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
1795 sector_t capacity, int geom[])
1796{
1797 int heads;
1798 int sectors;
1799 sector_t cylinders;
1800 unsigned long tmp;
1801 /* Default heads (64) & sectors (32) */
1802 heads = 64;
1803 sectors = 32;
1804
1805 tmp = heads * sectors;
1806 cylinders = capacity;
1807
1808 sector_div(cylinders, tmp);
1809
1810 /*
1811 * Handle extended translation size for logical drives > 1Gb
1812 */
1813
1814 if (capacity >= 0x200000) {
1815 heads = 255;
1816 sectors = 63;
1817 tmp = heads*sectors;
1818 cylinders = capacity;
1819 sector_div(cylinders, tmp);
1820 }
1821
1822 geom[0] = heads;
1823 geom[1] = sectors;
1824 geom[2] = cylinders;
1825
1826 return 0;
1827}
1828
7e8a75f4
YB		 1829static void megasas_aen_polling(struct work_struct *work);
1830
c4a3e0a5
BS		 1831/**
1832 * megasas_service_aen - Processes an event notification
1833 * @instance: Adapter soft state
1834 * @cmd: AEN command completed by the ISR
1835 *
1836 * For AEN, driver sends a command down to FW that is held by the FW till an
1837 * event occurs. When an event of interest occurs, FW completes the command
1838 * that it was previously holding.
1839 *
1840 * This routines sends SIGIO signal to processes that have registered with the
1841 * driver for AEN.
1842 */
1843static void
1844megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
1845{
c3518837 1846 unsigned long flags;
c4a3e0a5
BS		 1847 /*
1848 * Don't signal app if it is just an aborted previously registered aen
1849 */
c3518837
YB		 1850 if ((!cmd->abort_aen) && (instance->unload == 0)) {
1851 spin_lock_irqsave(&poll_aen_lock, flags);
1852 megasas_poll_wait_aen = 1;
1853 spin_unlock_irqrestore(&poll_aen_lock, flags);
1854 wake_up(&megasas_poll_wait);
c4a3e0a5 1855 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
c3518837 1856 }
c4a3e0a5
BS		 1857 else
1858 cmd->abort_aen = 0;
1859
1860 instance->aen_cmd = NULL;
1861 megasas_return_cmd(instance, cmd);
7e8a75f4 1862
39a98554 1863 if ((instance->unload == 0) &&
1864 ((instance->issuepend_done == 1))) {
7e8a75f4
YB		 1865 struct megasas_aen_event *ev;
1866 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
1867 if (!ev) {
1868 printk(KERN_ERR "megasas_service_aen: out of memory\n");
1869 } else {
1870 ev->instance = instance;
1871 instance->ev = ev;
1872 INIT_WORK(&ev->hotplug_work, megasas_aen_polling);
1873 schedule_delayed_work(
1874 (struct delayed_work *)&ev->hotplug_work, 0);
1875 }
1876 }
c4a3e0a5
BS		 1877}
1878
1879/*
1880 * Scsi host template for megaraid_sas driver
1881 */
1882static struct scsi_host_template megasas_template = {
1883
1884 .module = THIS_MODULE,
f28cd7cf 1885 .name = "LSI SAS based MegaRAID driver",
c4a3e0a5 1886 .proc_name = "megaraid_sas",
147aab6a 1887 .slave_configure = megasas_slave_configure,
044833b5 1888 .slave_alloc = megasas_slave_alloc,
c4a3e0a5
BS		 1889 .queuecommand = megasas_queue_command,
1890 .eh_device_reset_handler = megasas_reset_device,
1891 .eh_bus_reset_handler = megasas_reset_bus_host,
1892 .eh_host_reset_handler = megasas_reset_bus_host,
05e9ebbe 1893 .eh_timed_out = megasas_reset_timer,
cf62a0a5 1894 .bios_param = megasas_bios_param,
c4a3e0a5
BS		 1895 .use_clustering = ENABLE_CLUSTERING,
1896};
1897
1898/**
1899 * megasas_complete_int_cmd - Completes an internal command
1900 * @instance: Adapter soft state
1901 * @cmd: Command to be completed
1902 *
1903 * The megasas_issue_blocked_cmd() function waits for a command to complete
1904 * after it issues a command. This function wakes up that waiting routine by
1905 * calling wake_up() on the wait queue.
1906 */
1907static void
1908megasas_complete_int_cmd(struct megasas_instance *instance,
1909 struct megasas_cmd *cmd)
1910{
1911 cmd->cmd_status = cmd->frame->io.cmd_status;
1912
1913 if (cmd->cmd_status == ENODATA) {
1914 cmd->cmd_status = 0;
1915 }
1916 wake_up(&instance->int_cmd_wait_q);
1917}
1918
1919/**
1920 * megasas_complete_abort - Completes aborting a command
1921 * @instance: Adapter soft state
1922 * @cmd: Cmd that was issued to abort another cmd
1923 *
1924 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
1925 * after it issues an abort on a previously issued command. This function
1926 * wakes up all functions waiting on the same wait queue.
1927 */
1928static void
1929megasas_complete_abort(struct megasas_instance *instance,
1930 struct megasas_cmd *cmd)
1931{
1932 if (cmd->sync_cmd) {
1933 cmd->sync_cmd = 0;
1934 cmd->cmd_status = 0;
1935 wake_up(&instance->abort_cmd_wait_q);
1936 }
1937
1938 return;
1939}
1940
c4a3e0a5
BS		 1941/**
1942 * megasas_complete_cmd - Completes a command
1943 * @instance: Adapter soft state
1944 * @cmd: Command to be completed
1945 * @alt_status: If non-zero, use this value as status to
1946 * SCSI mid-layer instead of the value returned
1947 * by the FW. This should be used if caller wants
1948 * an alternate status (as in the case of aborted
1949 * commands)
1950 */
858119e1 1951static void
c4a3e0a5
BS		 1952megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
1953 u8 alt_status)
1954{
1955 int exception = 0;
1956 struct megasas_header *hdr = &cmd->frame->hdr;
c3518837 1957 unsigned long flags;
c4a3e0a5 1958
39a98554 1959 /* flag for the retry reset */
1960 cmd->retry_for_fw_reset = 0;
1961
05e9ebbe
SP		 1962 if (cmd->scmd)
1963 cmd->scmd->SCp.ptr = NULL;
c4a3e0a5
BS		 1964
1965 switch (hdr->cmd) {
1966
1967 case MFI_CMD_PD_SCSI_IO:
1968 case MFI_CMD_LD_SCSI_IO:
1969
1970 /*
1971 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
1972 * issued either through an IO path or an IOCTL path. If it
1973 * was via IOCTL, we will send it to internal completion.
1974 */
1975 if (cmd->sync_cmd) {
1976 cmd->sync_cmd = 0;
1977 megasas_complete_int_cmd(instance, cmd);
1978 break;
1979 }
1980
c4a3e0a5
BS		 1981 case MFI_CMD_LD_READ:
1982 case MFI_CMD_LD_WRITE:
1983
1984 if (alt_status) {
1985 cmd->scmd->result = alt_status << 16;
1986 exception = 1;
1987 }
1988
1989 if (exception) {
1990
e4a082c7 1991 atomic_dec(&instance->fw_outstanding);
c4a3e0a5 1992
155d98f0 1993 scsi_dma_unmap(cmd->scmd);
c4a3e0a5
BS		 1994 cmd->scmd->scsi_done(cmd->scmd);
1995 megasas_return_cmd(instance, cmd);
1996
1997 break;
1998 }
1999
2000 switch (hdr->cmd_status) {
2001
2002 case MFI_STAT_OK:
2003 cmd->scmd->result = DID_OK << 16;
2004 break;
2005
2006 case MFI_STAT_SCSI_IO_FAILED:
2007 case MFI_STAT_LD_INIT_IN_PROGRESS:
2008 cmd->scmd->result =
2009 (DID_ERROR << 16) | hdr->scsi_status;
2010 break;
2011
2012 case MFI_STAT_SCSI_DONE_WITH_ERROR:
2013
2014 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
2015
2016 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
2017 memset(cmd->scmd->sense_buffer, 0,
2018 SCSI_SENSE_BUFFERSIZE);
2019 memcpy(cmd->scmd->sense_buffer, cmd->sense,
2020 hdr->sense_len);
2021
2022 cmd->scmd->result |= DRIVER_SENSE << 24;
2023 }
2024
2025 break;
2026
2027 case MFI_STAT_LD_OFFLINE:
2028 case MFI_STAT_DEVICE_NOT_FOUND:
2029 cmd->scmd->result = DID_BAD_TARGET << 16;
2030 break;
2031
2032 default:
2033 printk(KERN_DEBUG "megasas: MFI FW status %#x\n",
2034 hdr->cmd_status);
2035 cmd->scmd->result = DID_ERROR << 16;
2036 break;
2037 }
2038
e4a082c7 2039 atomic_dec(&instance->fw_outstanding);
c4a3e0a5 2040
155d98f0 2041 scsi_dma_unmap(cmd->scmd);
c4a3e0a5
BS		 2042 cmd->scmd->scsi_done(cmd->scmd);
2043 megasas_return_cmd(instance, cmd);
2044
2045 break;
2046
2047 case MFI_CMD_SMP:
2048 case MFI_CMD_STP:
2049 case MFI_CMD_DCMD:
c3518837
YB		 2050 if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
2051 cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET) {
2052 spin_lock_irqsave(&poll_aen_lock, flags);
2053 megasas_poll_wait_aen = 0;
2054 spin_unlock_irqrestore(&poll_aen_lock, flags);
2055 }
c4a3e0a5
BS		 2056
2057 /*
2058 * See if got an event notification
2059 */
2060 if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_WAIT)
2061 megasas_service_aen(instance, cmd);
2062 else
2063 megasas_complete_int_cmd(instance, cmd);
2064
2065 break;
2066
2067 case MFI_CMD_ABORT:
2068 /*
2069 * Cmd issued to abort another cmd returned
2070 */
2071 megasas_complete_abort(instance, cmd);
2072 break;
2073
2074 default:
2075 printk("megasas: Unknown command completed! [0x%X]\n",
2076 hdr->cmd);
2077 break;
2078 }
2079}
2080
39a98554 2081/**
2082 * megasas_issue_pending_cmds_again - issue all pending cmds
2083 * in FW again because of the fw reset
2084 * @instance: Adapter soft state
2085 */
2086static inline void
2087megasas_issue_pending_cmds_again(struct megasas_instance *instance)
2088{
2089 struct megasas_cmd *cmd;
2090 struct list_head clist_local;
2091 union megasas_evt_class_locale class_locale;
2092 unsigned long flags;
2093 u32 seq_num;
2094
2095 INIT_LIST_HEAD(&clist_local);
2096 spin_lock_irqsave(&instance->hba_lock, flags);
2097 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
2098 spin_unlock_irqrestore(&instance->hba_lock, flags);
2099
2100 while (!list_empty(&clist_local)) {
2101 cmd = list_entry((&clist_local)->next,
2102 struct megasas_cmd, list);
2103 list_del_init(&cmd->list);
2104
2105 if (cmd->sync_cmd || cmd->scmd) {
2106 printk(KERN_NOTICE "megaraid_sas: command %p, %p:%d"
2107 "detected to be pending while HBA reset.\n",
2108 cmd, cmd->scmd, cmd->sync_cmd);
2109
2110 cmd->retry_for_fw_reset++;
2111
2112 if (cmd->retry_for_fw_reset == 3) {
2113 printk(KERN_NOTICE "megaraid_sas: cmd %p, %p:%d"
2114 "was tried multiple times during reset."
2115 "Shutting down the HBA\n",
2116 cmd, cmd->scmd, cmd->sync_cmd);
2117 megaraid_sas_kill_hba(instance);
2118
2119 instance->adprecovery =
2120 MEGASAS_HW_CRITICAL_ERROR;
2121 return;
2122 }
2123 }
2124
2125 if (cmd->sync_cmd == 1) {
2126 if (cmd->scmd) {
2127 printk(KERN_NOTICE "megaraid_sas: unexpected"
2128 "cmd attached to internal command!\n");
2129 }
2130 printk(KERN_NOTICE "megasas: %p synchronous cmd"
2131 "on the internal reset queue,"
2132 "issue it again.\n", cmd);
2133 cmd->cmd_status = ENODATA;
2134 instance->instancet->fire_cmd(instance,
2135 cmd->frame_phys_addr ,
2136 0, instance->reg_set);
2137 } else if (cmd->scmd) {
2138 printk(KERN_NOTICE "megasas: %p scsi cmd [%02x],%#lx"
2139 "detected on the internal queue, issue again.\n",
2140 cmd, cmd->scmd->cmnd[0], cmd->scmd->serial_number);
2141
2142 atomic_inc(&instance->fw_outstanding);
2143 instance->instancet->fire_cmd(instance,
2144 cmd->frame_phys_addr,
2145 cmd->frame_count-1, instance->reg_set);
2146 } else {
2147 printk(KERN_NOTICE "megasas: %p unexpected cmd on the"
2148 "internal reset defer list while re-issue!!\n",
2149 cmd);
2150 }
2151 }
2152
2153 if (instance->aen_cmd) {
2154 printk(KERN_NOTICE "megaraid_sas: aen_cmd in def process\n");
2155 megasas_return_cmd(instance, instance->aen_cmd);
2156
2157 instance->aen_cmd = NULL;
2158 }
2159
2160 /*
2161 * Initiate AEN (Asynchronous Event Notification)
2162 */
2163 seq_num = instance->last_seq_num;
2164 class_locale.members.reserved = 0;
2165 class_locale.members.locale = MR_EVT_LOCALE_ALL;
2166 class_locale.members.class = MR_EVT_CLASS_DEBUG;
2167
2168 megasas_register_aen(instance, seq_num, class_locale.word);
2169}
2170
2171/**
2172 * Move the internal reset pending commands to a deferred queue.
2173 *
2174 * We move the commands pending at internal reset time to a
2175 * pending queue. This queue would be flushed after successful
2176 * completion of the internal reset sequence. if the internal reset
2177 * did not complete in time, the kernel reset handler would flush
2178 * these commands.
2179 **/
2180static void
2181megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
2182{
2183 struct megasas_cmd *cmd;
2184 int i;
2185 u32 max_cmd = instance->max_fw_cmds;
2186 u32 defer_index;
2187 unsigned long flags;
2188
2189 defer_index = 0;
2190 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
2191 for (i = 0; i < max_cmd; i++) {
2192 cmd = instance->cmd_list[i];
2193 if (cmd->sync_cmd == 1 || cmd->scmd) {
2194 printk(KERN_NOTICE "megasas: moving cmd[%d]:%p:%d:%p"
2195 "on the defer queue as internal\n",
2196 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
2197
2198 if (!list_empty(&cmd->list)) {
2199 printk(KERN_NOTICE "megaraid_sas: ERROR while"
2200 " moving this cmd:%p, %d %p, it was"
2201 "discovered on some list?\n",
2202 cmd, cmd->sync_cmd, cmd->scmd);
2203
2204 list_del_init(&cmd->list);
2205 }
2206 defer_index++;
2207 list_add_tail(&cmd->list,
2208 &instance->internal_reset_pending_q);
2209 }
2210 }
2211 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
2212}
2213
2214
2215static void
2216process_fw_state_change_wq(struct work_struct *work)
2217{
2218 struct megasas_instance *instance =
2219 container_of(work, struct megasas_instance, work_init);
2220 u32 wait;
2221 unsigned long flags;
2222
2223 if (instance->adprecovery != MEGASAS_ADPRESET_SM_INFAULT) {
2224 printk(KERN_NOTICE "megaraid_sas: error, recovery st %x \n",
2225 instance->adprecovery);
2226 return ;
2227 }
2228
2229 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) {
2230 printk(KERN_NOTICE "megaraid_sas: FW detected to be in fault"
2231 "state, restarting it...\n");
2232
2233 instance->instancet->disable_intr(instance->reg_set);
2234 atomic_set(&instance->fw_outstanding, 0);
2235
2236 atomic_set(&instance->fw_reset_no_pci_access, 1);
2237 instance->instancet->adp_reset(instance, instance->reg_set);
2238 atomic_set(&instance->fw_reset_no_pci_access, 0 );
2239
2240 printk(KERN_NOTICE "megaraid_sas: FW restarted successfully,"
2241 "initiating next stage...\n");
2242
2243 printk(KERN_NOTICE "megaraid_sas: HBA recovery state machine,"
2244 "state 2 starting...\n");
2245
2246 /*waitting for about 20 second before start the second init*/
2247 for (wait = 0; wait < 30; wait++) {
2248 msleep(1000);
2249 }
2250
2251 if (megasas_transition_to_ready(instance)) {
2252 printk(KERN_NOTICE "megaraid_sas:adapter not ready\n");
2253
2254 megaraid_sas_kill_hba(instance);
2255 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2256 return ;
2257 }
2258
2259 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2260 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2261 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
2262 ) {
2263 *instance->consumer = *instance->producer;
2264 } else {
2265 *instance->consumer = 0;
2266 *instance->producer = 0;
2267 }
2268
2269 megasas_issue_init_mfi(instance);
2270
2271 spin_lock_irqsave(&instance->hba_lock, flags);
2272 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
2273 spin_unlock_irqrestore(&instance->hba_lock, flags);
2274 instance->instancet->enable_intr(instance->reg_set);
2275
2276 megasas_issue_pending_cmds_again(instance);
2277 instance->issuepend_done = 1;
2278 }
2279 return ;
2280}
2281
c4a3e0a5
BS		 2282/**
2283 * megasas_deplete_reply_queue - Processes all completed commands
2284 * @instance: Adapter soft state
2285 * @alt_status: Alternate status to be returned to
2286 * SCSI mid-layer instead of the status
2287 * returned by the FW
39a98554 2288 * Note: this must be called with hba lock held
c4a3e0a5 2289 */
858119e1 2290static int
39a98554 2291megasas_deplete_reply_queue(struct megasas_instance *instance,
2292 u8 alt_status)
c4a3e0a5 2293{
39a98554 2294 u32 mfiStatus;
2295 u32 fw_state;
2296
2297 if ((mfiStatus = instance->instancet->check_reset(instance,
2298 instance->reg_set)) == 1) {
2299 return IRQ_HANDLED;
2300 }
2301
2302 if ((mfiStatus = instance->instancet->clear_intr(
2303 instance->reg_set)
2304 ) == 0) {
c4a3e0a5 2305 return IRQ_NONE;
39a98554 2306 }
2307
2308 instance->mfiStatus = mfiStatus;
2309
2310 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
2311 fw_state = instance->instancet->read_fw_status_reg(
2312 instance->reg_set) & MFI_STATE_MASK;
2313
2314 if (fw_state != MFI_STATE_FAULT) {
2315 printk(KERN_NOTICE "megaraid_sas: fw state:%x\n",
2316 fw_state);
2317 }
2318
2319 if ((fw_state == MFI_STATE_FAULT) &&
2320 (instance->disableOnlineCtrlReset == 0)) {
2321 printk(KERN_NOTICE "megaraid_sas: wait adp restart\n");
2322
2323 if ((instance->pdev->device ==
2324 PCI_DEVICE_ID_LSI_SAS1064R) ||
2325 (instance->pdev->device ==
2326 PCI_DEVICE_ID_DELL_PERC5) ||
2327 (instance->pdev->device ==
2328 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2329
2330 *instance->consumer =
2331 MEGASAS_ADPRESET_INPROG_SIGN;
2332 }
2333
2334
2335 instance->instancet->disable_intr(instance->reg_set);
2336 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
2337 instance->issuepend_done = 0;
2338
2339 atomic_set(&instance->fw_outstanding, 0);
2340 megasas_internal_reset_defer_cmds(instance);
2341
2342 printk(KERN_NOTICE "megasas: fwState=%x, stage:%d\n",
2343 fw_state, instance->adprecovery);
2344
2345 schedule_work(&instance->work_init);
2346 return IRQ_HANDLED;
2347
2348 } else {
2349 printk(KERN_NOTICE "megasas: fwstate:%x, dis_OCR=%x\n",
2350 fw_state, instance->disableOnlineCtrlReset);
2351 }
2352 }
c4a3e0a5 2353
5d018ad0 2354 tasklet_schedule(&instance->isr_tasklet);
c4a3e0a5
BS		 2355 return IRQ_HANDLED;
2356}
c4a3e0a5
BS		 2357/**
2358 * megasas_isr - isr entry point
2359 */
7d12e780 2360static irqreturn_t megasas_isr(int irq, void *devp)
c4a3e0a5 2361{
39a98554 2362 struct megasas_instance *instance;
2363 unsigned long flags;
2364 irqreturn_t rc;
2365
2366 if (atomic_read(
2367 &(((struct megasas_instance *)devp)->fw_reset_no_pci_access)))
2368 return IRQ_HANDLED;
2369
2370 instance = (struct megasas_instance *)devp;
2371
2372 spin_lock_irqsave(&instance->hba_lock, flags);
2373 rc = megasas_deplete_reply_queue(instance, DID_OK);
2374 spin_unlock_irqrestore(&instance->hba_lock, flags);
2375
2376 return rc;
c4a3e0a5
BS		 2377}
2378
2379/**
2380 * megasas_transition_to_ready - Move the FW to READY state
1341c939 2381 * @instance: Adapter soft state
c4a3e0a5
BS		 2382 *
2383 * During the initialization, FW passes can potentially be in any one of
2384 * several possible states. If the FW in operational, waiting-for-handshake
2385 * states, driver must take steps to bring it to ready state. Otherwise, it
2386 * has to wait for the ready state.
2387 */
2388static int
1341c939 2389megasas_transition_to_ready(struct megasas_instance* instance)
c4a3e0a5
BS		 2390{
2391 int i;
2392 u8 max_wait;
2393 u32 fw_state;
2394 u32 cur_state;
7218df69 2395 u32 abs_state, curr_abs_state;
c4a3e0a5 2396
1341c939 2397 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
c4a3e0a5 2398
e3bbff9f
SP		 2399 if (fw_state != MFI_STATE_READY)
2400 printk(KERN_INFO "megasas: Waiting for FW to come to ready"
2401 " state\n");
2402
c4a3e0a5
BS		 2403 while (fw_state != MFI_STATE_READY) {
2404
7218df69
YB		 2405 abs_state =
2406 instance->instancet->read_fw_status_reg(instance->reg_set);
2407
c4a3e0a5
BS		 2408 switch (fw_state) {
2409
2410 case MFI_STATE_FAULT:
2411
2412 printk(KERN_DEBUG "megasas: FW in FAULT state!!\n");
2413 return -ENODEV;
2414
2415 case MFI_STATE_WAIT_HANDSHAKE:
2416 /*
2417 * Set the CLR bit in inbound doorbell
2418 */
0c79e681 2419 if ((instance->pdev->device ==
87911122
YB		 2420 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2421 (instance->pdev->device ==
2422 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
2423
2424 writel(
2425 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
2426 &instance->reg_set->reserved_0[0]);
2427 } else {
2428 writel(
2429 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
2430 &instance->reg_set->inbound_doorbell);
2431 }
c4a3e0a5 2432
7218df69 2433 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 2434 cur_state = MFI_STATE_WAIT_HANDSHAKE;
2435 break;
2436
e3bbff9f 2437 case MFI_STATE_BOOT_MESSAGE_PENDING:
87911122
YB		 2438 if ((instance->pdev->device ==
2439 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2440 (instance->pdev->device ==
2441 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
2442 writel(MFI_INIT_HOTPLUG,
2443 &instance->reg_set->reserved_0[0]);
2444 } else
2445 writel(MFI_INIT_HOTPLUG,
2446 &instance->reg_set->inbound_doorbell);
e3bbff9f 2447
7218df69 2448 max_wait = MEGASAS_RESET_WAIT_TIME;
e3bbff9f
SP		 2449 cur_state = MFI_STATE_BOOT_MESSAGE_PENDING;
2450 break;
2451
c4a3e0a5
BS		 2452 case MFI_STATE_OPERATIONAL:
2453 /*
e3bbff9f 2454 * Bring it to READY state; assuming max wait 10 secs
c4a3e0a5 2455 */
b274cab7 2456 instance->instancet->disable_intr(instance->reg_set);
87911122
YB		 2457 if ((instance->pdev->device ==
2458 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2459 (instance->pdev->device ==
2460 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
2461 writel(MFI_RESET_FLAGS,
2462 &instance->reg_set->reserved_0[0]);
2463 } else
2464 writel(MFI_RESET_FLAGS,
2465 &instance->reg_set->inbound_doorbell);
c4a3e0a5 2466
7218df69 2467 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 2468 cur_state = MFI_STATE_OPERATIONAL;
2469 break;
2470
2471 case MFI_STATE_UNDEFINED:
2472 /*
2473 * This state should not last for more than 2 seconds
2474 */
7218df69 2475 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 2476 cur_state = MFI_STATE_UNDEFINED;
2477 break;
2478
2479 case MFI_STATE_BB_INIT:
7218df69 2480 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 2481 cur_state = MFI_STATE_BB_INIT;
2482 break;
2483
2484 case MFI_STATE_FW_INIT:
7218df69 2485 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 2486 cur_state = MFI_STATE_FW_INIT;
2487 break;
2488
2489 case MFI_STATE_FW_INIT_2:
7218df69 2490 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 2491 cur_state = MFI_STATE_FW_INIT_2;
2492 break;
2493
2494 case MFI_STATE_DEVICE_SCAN:
7218df69 2495 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 2496 cur_state = MFI_STATE_DEVICE_SCAN;
2497 break;
2498
2499 case MFI_STATE_FLUSH_CACHE:
7218df69 2500 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 2501 cur_state = MFI_STATE_FLUSH_CACHE;
2502 break;
2503
2504 default:
2505 printk(KERN_DEBUG "megasas: Unknown state 0x%x\n",
2506 fw_state);
2507 return -ENODEV;
2508 }
2509
2510 /*
2511 * The cur_state should not last for more than max_wait secs
2512 */
2513 for (i = 0; i < (max_wait * 1000); i++) {
1341c939
SP		 2514 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) &
2515 MFI_STATE_MASK ;
7218df69
YB		 2516 curr_abs_state =
2517 instance->instancet->read_fw_status_reg(instance->reg_set);
c4a3e0a5 2518
7218df69 2519 if (abs_state == curr_abs_state) {
c4a3e0a5
BS		 2520 msleep(1);
2521 } else
2522 break;
2523 }
2524
2525 /*
2526 * Return error if fw_state hasn't changed after max_wait
2527 */
7218df69 2528 if (curr_abs_state == abs_state) {
c4a3e0a5
BS		 2529 printk(KERN_DEBUG "FW state [%d] hasn't changed "
2530 "in %d secs\n", fw_state, max_wait);
2531 return -ENODEV;
2532 }
39a98554 2533 }
e3bbff9f 2534 printk(KERN_INFO "megasas: FW now in Ready state\n");
c4a3e0a5
BS		 2535
2536 return 0;
2537}
2538
2539/**
2540 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
2541 * @instance: Adapter soft state
2542 */
2543static void megasas_teardown_frame_pool(struct megasas_instance *instance)
2544{
2545 int i;
2546 u32 max_cmd = instance->max_fw_cmds;
2547 struct megasas_cmd *cmd;
2548
2549 if (!instance->frame_dma_pool)
2550 return;
2551
2552 /*
2553 * Return all frames to pool
2554 */
2555 for (i = 0; i < max_cmd; i++) {
2556
2557 cmd = instance->cmd_list[i];
2558
2559 if (cmd->frame)
2560 pci_pool_free(instance->frame_dma_pool, cmd->frame,
2561 cmd->frame_phys_addr);
2562
2563 if (cmd->sense)
e3bbff9f 2564 pci_pool_free(instance->sense_dma_pool, cmd->sense,
c4a3e0a5
BS		 2565 cmd->sense_phys_addr);
2566 }
2567
2568 /*
2569 * Now destroy the pool itself
2570 */
2571 pci_pool_destroy(instance->frame_dma_pool);
2572 pci_pool_destroy(instance->sense_dma_pool);
2573
2574 instance->frame_dma_pool = NULL;
2575 instance->sense_dma_pool = NULL;
2576}
2577
2578/**
2579 * megasas_create_frame_pool - Creates DMA pool for cmd frames
2580 * @instance: Adapter soft state
2581 *
2582 * Each command packet has an embedded DMA memory buffer that is used for
2583 * filling MFI frame and the SG list that immediately follows the frame. This
2584 * function creates those DMA memory buffers for each command packet by using
2585 * PCI pool facility.
2586 */
2587static int megasas_create_frame_pool(struct megasas_instance *instance)
2588{
2589 int i;
2590 u32 max_cmd;
2591 u32 sge_sz;
2592 u32 sgl_sz;
2593 u32 total_sz;
2594 u32 frame_count;
2595 struct megasas_cmd *cmd;
2596
2597 max_cmd = instance->max_fw_cmds;
2598
2599 /*
2600 * Size of our frame is 64 bytes for MFI frame, followed by max SG
2601 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer
2602 */
2603 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
2604 sizeof(struct megasas_sge32);
2605
f4c9a131
YB		 2606 if (instance->flag_ieee) {
2607 sge_sz = sizeof(struct megasas_sge_skinny);
2608 }
2609
c4a3e0a5
BS		 2610 /*
2611 * Calculated the number of 64byte frames required for SGL
2612 */
2613 sgl_sz = sge_sz * instance->max_num_sge;
2614 frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE - 1) / MEGAMFI_FRAME_SIZE;
39a98554 2615 frame_count = 15;
c4a3e0a5
BS		 2616
2617 /*
2618 * We need one extra frame for the MFI command
2619 */
2620 frame_count++;
2621
2622 total_sz = MEGAMFI_FRAME_SIZE * frame_count;
2623 /*
2624 * Use DMA pool facility provided by PCI layer
2625 */
2626 instance->frame_dma_pool = pci_pool_create("megasas frame pool",
2627 instance->pdev, total_sz, 64,
2628 0);
2629
2630 if (!instance->frame_dma_pool) {
2631 printk(KERN_DEBUG "megasas: failed to setup frame pool\n");
2632 return -ENOMEM;
2633 }
2634
2635 instance->sense_dma_pool = pci_pool_create("megasas sense pool",
2636 instance->pdev, 128, 4, 0);
2637
2638 if (!instance->sense_dma_pool) {
2639 printk(KERN_DEBUG "megasas: failed to setup sense pool\n");
2640
2641 pci_pool_destroy(instance->frame_dma_pool);
2642 instance->frame_dma_pool = NULL;
2643
2644 return -ENOMEM;
2645 }
2646
2647 /*
2648 * Allocate and attach a frame to each of the commands in cmd_list.
2649 * By making cmd->index as the context instead of the &cmd, we can
2650 * always use 32bit context regardless of the architecture
2651 */
2652 for (i = 0; i < max_cmd; i++) {
2653
2654 cmd = instance->cmd_list[i];
2655
2656 cmd->frame = pci_pool_alloc(instance->frame_dma_pool,
2657 GFP_KERNEL, &cmd->frame_phys_addr);
2658
2659 cmd->sense = pci_pool_alloc(instance->sense_dma_pool,
2660 GFP_KERNEL, &cmd->sense_phys_addr);
2661
2662 /*
2663 * megasas_teardown_frame_pool() takes care of freeing
2664 * whatever has been allocated
2665 */
2666 if (!cmd->frame || !cmd->sense) {
2667 printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n");
2668 megasas_teardown_frame_pool(instance);
2669 return -ENOMEM;
2670 }
2671
2672 cmd->frame->io.context = cmd->index;
7e8a75f4 2673 cmd->frame->io.pad_0 = 0;
c4a3e0a5
BS		 2674 }
2675
2676 return 0;
2677}
2678
2679/**
2680 * megasas_free_cmds - Free all the cmds in the free cmd pool
2681 * @instance: Adapter soft state
2682 */
2683static void megasas_free_cmds(struct megasas_instance *instance)
2684{
2685 int i;
2686 /* First free the MFI frame pool */
2687 megasas_teardown_frame_pool(instance);
2688
2689 /* Free all the commands in the cmd_list */
2690 for (i = 0; i < instance->max_fw_cmds; i++)
2691 kfree(instance->cmd_list[i]);
2692
2693 /* Free the cmd_list buffer itself */
2694 kfree(instance->cmd_list);
2695 instance->cmd_list = NULL;
2696
2697 INIT_LIST_HEAD(&instance->cmd_pool);
2698}
2699
2700/**
2701 * megasas_alloc_cmds - Allocates the command packets
2702 * @instance: Adapter soft state
2703 *
2704 * Each command that is issued to the FW, whether IO commands from the OS or
2705 * internal commands like IOCTLs, are wrapped in local data structure called
2706 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
2707 * the FW.
2708 *
2709 * Each frame has a 32-bit field called context (tag). This context is used
2710 * to get back the megasas_cmd from the frame when a frame gets completed in
2711 * the ISR. Typically the address of the megasas_cmd itself would be used as
2712 * the context. But we wanted to keep the differences between 32 and 64 bit
2713 * systems to the mininum. We always use 32 bit integers for the context. In
2714 * this driver, the 32 bit values are the indices into an array cmd_list.
2715 * This array is used only to look up the megasas_cmd given the context. The
2716 * free commands themselves are maintained in a linked list called cmd_pool.
2717 */
2718static int megasas_alloc_cmds(struct megasas_instance *instance)
2719{
2720 int i;
2721 int j;
2722 u32 max_cmd;
2723 struct megasas_cmd *cmd;
2724
2725 max_cmd = instance->max_fw_cmds;
2726
2727 /*
2728 * instance->cmd_list is an array of struct megasas_cmd pointers.
2729 * Allocate the dynamic array first and then allocate individual
2730 * commands.
2731 */
dd00cc48 2732 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
c4a3e0a5
BS		 2733
2734 if (!instance->cmd_list) {
2735 printk(KERN_DEBUG "megasas: out of memory\n");
2736 return -ENOMEM;
2737 }
2738
c4a3e0a5
BS		 2739
2740 for (i = 0; i < max_cmd; i++) {
2741 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
2742 GFP_KERNEL);
2743
2744 if (!instance->cmd_list[i]) {
2745
2746 for (j = 0; j < i; j++)
2747 kfree(instance->cmd_list[j]);
2748
2749 kfree(instance->cmd_list);
2750 instance->cmd_list = NULL;
2751
2752 return -ENOMEM;
2753 }
2754 }
2755
2756 /*
2757 * Add all the commands to command pool (instance->cmd_pool)
2758 */
2759 for (i = 0; i < max_cmd; i++) {
2760 cmd = instance->cmd_list[i];
2761 memset(cmd, 0, sizeof(struct megasas_cmd));
2762 cmd->index = i;
39a98554 2763 cmd->scmd = NULL;
c4a3e0a5
BS		 2764 cmd->instance = instance;
2765
2766 list_add_tail(&cmd->list, &instance->cmd_pool);
2767 }
2768
2769 /*
2770 * Create a frame pool and assign one frame to each cmd
2771 */
2772 if (megasas_create_frame_pool(instance)) {
2773 printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n");
2774 megasas_free_cmds(instance);
2775 }
2776
2777 return 0;
2778}
2779
81e403ce
YB		 2780/*
2781 * megasas_get_pd_list_info - Returns FW's pd_list structure
2782 * @instance: Adapter soft state
2783 * @pd_list: pd_list structure
2784 *
2785 * Issues an internal command (DCMD) to get the FW's controller PD
2786 * list structure. This information is mainly used to find out SYSTEM
2787 * supported by the FW.
2788 */
2789static int
2790megasas_get_pd_list(struct megasas_instance *instance)
2791{
2792 int ret = 0, pd_index = 0;
2793 struct megasas_cmd *cmd;
2794 struct megasas_dcmd_frame *dcmd;
2795 struct MR_PD_LIST *ci;
2796 struct MR_PD_ADDRESS *pd_addr;
2797 dma_addr_t ci_h = 0;
2798
2799 cmd = megasas_get_cmd(instance);
2800
2801 if (!cmd) {
2802 printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n");
2803 return -ENOMEM;
2804 }
2805
2806 dcmd = &cmd->frame->dcmd;
2807
2808 ci = pci_alloc_consistent(instance->pdev,
2809 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h);
2810
2811 if (!ci) {
2812 printk(KERN_DEBUG "Failed to alloc mem for pd_list\n");
2813 megasas_return_cmd(instance, cmd);
2814 return -ENOMEM;
2815 }
2816
2817 memset(ci, 0, sizeof(*ci));
2818 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2819
2820 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
2821 dcmd->mbox.b[1] = 0;
2822 dcmd->cmd = MFI_CMD_DCMD;
2823 dcmd->cmd_status = 0xFF;
2824 dcmd->sge_count = 1;
2825 dcmd->flags = MFI_FRAME_DIR_READ;
2826 dcmd->timeout = 0;
780a3762 2827 dcmd->pad_0 = 0;
81e403ce
YB		 2828 dcmd->data_xfer_len = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST);
2829 dcmd->opcode = MR_DCMD_PD_LIST_QUERY;
2830 dcmd->sgl.sge32[0].phys_addr = ci_h;
2831 dcmd->sgl.sge32[0].length = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST);
2832
2833 if (!megasas_issue_polled(instance, cmd)) {
2834 ret = 0;
2835 } else {
2836 ret = -1;
2837 }
2838
2839 /*
2840 * the following function will get the instance PD LIST.
2841 */
2842
2843 pd_addr = ci->addr;
2844
2845 if ( ret == 0 &&
2846 (ci->count <
2847 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) {
2848
2849 memset(instance->pd_list, 0,
2850 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
2851
2852 for (pd_index = 0; pd_index < ci->count; pd_index++) {
2853
2854 instance->pd_list[pd_addr->deviceId].tid =
2855 pd_addr->deviceId;
2856 instance->pd_list[pd_addr->deviceId].driveType =
2857 pd_addr->scsiDevType;
2858 instance->pd_list[pd_addr->deviceId].driveState =
2859 MR_PD_STATE_SYSTEM;
2860 pd_addr++;
2861 }
2862 }
2863
2864 pci_free_consistent(instance->pdev,
2865 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
2866 ci, ci_h);
2867 megasas_return_cmd(instance, cmd);
2868
2869 return ret;
2870}
2871
bdc6fb8d
YB		 2872/*
2873 * megasas_get_ld_list_info - Returns FW's ld_list structure
2874 * @instance: Adapter soft state
2875 * @ld_list: ld_list structure
2876 *
2877 * Issues an internal command (DCMD) to get the FW's controller PD
2878 * list structure. This information is mainly used to find out SYSTEM
2879 * supported by the FW.
2880 */
2881static int
2882megasas_get_ld_list(struct megasas_instance *instance)
2883{
2884 int ret = 0, ld_index = 0, ids = 0;
2885 struct megasas_cmd *cmd;
2886 struct megasas_dcmd_frame *dcmd;
2887 struct MR_LD_LIST *ci;
2888 dma_addr_t ci_h = 0;
2889
2890 cmd = megasas_get_cmd(instance);
2891
2892 if (!cmd) {
2893 printk(KERN_DEBUG "megasas_get_ld_list: Failed to get cmd\n");
2894 return -ENOMEM;
2895 }
2896
2897 dcmd = &cmd->frame->dcmd;
2898
2899 ci = pci_alloc_consistent(instance->pdev,
2900 sizeof(struct MR_LD_LIST),
2901 &ci_h);
2902
2903 if (!ci) {
2904 printk(KERN_DEBUG "Failed to alloc mem in get_ld_list\n");
2905 megasas_return_cmd(instance, cmd);
2906 return -ENOMEM;
2907 }
2908
2909 memset(ci, 0, sizeof(*ci));
2910 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2911
2912 dcmd->cmd = MFI_CMD_DCMD;
2913 dcmd->cmd_status = 0xFF;
2914 dcmd->sge_count = 1;
2915 dcmd->flags = MFI_FRAME_DIR_READ;
2916 dcmd->timeout = 0;
2917 dcmd->data_xfer_len = sizeof(struct MR_LD_LIST);
2918 dcmd->opcode = MR_DCMD_LD_GET_LIST;
2919 dcmd->sgl.sge32[0].phys_addr = ci_h;
2920 dcmd->sgl.sge32[0].length = sizeof(struct MR_LD_LIST);
2921 dcmd->pad_0 = 0;
2922
2923 if (!megasas_issue_polled(instance, cmd)) {
2924 ret = 0;
2925 } else {
2926 ret = -1;
2927 }
2928
2929 /* the following function will get the instance PD LIST */
2930
39a98554 2931 if ((ret == 0) && (ci->ldCount <= MAX_LOGICAL_DRIVES)) {
bdc6fb8d
YB		 2932 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
2933
2934 for (ld_index = 0; ld_index < ci->ldCount; ld_index++) {
2935 if (ci->ldList[ld_index].state != 0) {
2936 ids = ci->ldList[ld_index].ref.targetId;
2937 instance->ld_ids[ids] =
2938 ci->ldList[ld_index].ref.targetId;
2939 }
2940 }
2941 }
2942
2943 pci_free_consistent(instance->pdev,
2944 sizeof(struct MR_LD_LIST),
2945 ci,
2946 ci_h);
2947
2948 megasas_return_cmd(instance, cmd);
2949 return ret;
2950}
2951
c4a3e0a5
BS		 2952/**
2953 * megasas_get_controller_info - Returns FW's controller structure
2954 * @instance: Adapter soft state
2955 * @ctrl_info: Controller information structure
2956 *
2957 * Issues an internal command (DCMD) to get the FW's controller structure.
2958 * This information is mainly used to find out the maximum IO transfer per
2959 * command supported by the FW.
2960 */
2961static int
2962megasas_get_ctrl_info(struct megasas_instance *instance,
2963 struct megasas_ctrl_info *ctrl_info)
2964{
2965 int ret = 0;
2966 struct megasas_cmd *cmd;
2967 struct megasas_dcmd_frame *dcmd;
2968 struct megasas_ctrl_info *ci;
2969 dma_addr_t ci_h = 0;
2970
2971 cmd = megasas_get_cmd(instance);
2972
2973 if (!cmd) {
2974 printk(KERN_DEBUG "megasas: Failed to get a free cmd\n");
2975 return -ENOMEM;
2976 }
2977
2978 dcmd = &cmd->frame->dcmd;
2979
2980 ci = pci_alloc_consistent(instance->pdev,
2981 sizeof(struct megasas_ctrl_info), &ci_h);
2982
2983 if (!ci) {
2984 printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n");
2985 megasas_return_cmd(instance, cmd);
2986 return -ENOMEM;
2987 }
2988
2989 memset(ci, 0, sizeof(*ci));
2990 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2991
2992 dcmd->cmd = MFI_CMD_DCMD;
2993 dcmd->cmd_status = 0xFF;
2994 dcmd->sge_count = 1;
2995 dcmd->flags = MFI_FRAME_DIR_READ;
2996 dcmd->timeout = 0;
780a3762 2997 dcmd->pad_0 = 0;
c4a3e0a5
BS		 2998 dcmd->data_xfer_len = sizeof(struct megasas_ctrl_info);
2999 dcmd->opcode = MR_DCMD_CTRL_GET_INFO;
3000 dcmd->sgl.sge32[0].phys_addr = ci_h;
3001 dcmd->sgl.sge32[0].length = sizeof(struct megasas_ctrl_info);
3002
3003 if (!megasas_issue_polled(instance, cmd)) {
3004 ret = 0;
3005 memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info));
3006 } else {
3007 ret = -1;
3008 }
3009
3010 pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info),
3011 ci, ci_h);
3012
3013 megasas_return_cmd(instance, cmd);
3014 return ret;
3015}
3016
31ea7088 3017/**
3018 * megasas_issue_init_mfi - Initializes the FW
3019 * @instance: Adapter soft state
3020 *
3021 * Issues the INIT MFI cmd
3022 */
3023static int
3024megasas_issue_init_mfi(struct megasas_instance *instance)
3025{
3026 u32 context;
3027
3028 struct megasas_cmd *cmd;
3029
3030 struct megasas_init_frame *init_frame;
3031 struct megasas_init_queue_info *initq_info;
3032 dma_addr_t init_frame_h;
3033 dma_addr_t initq_info_h;
3034
3035 /*
3036 * Prepare a init frame. Note the init frame points to queue info
3037 * structure. Each frame has SGL allocated after first 64 bytes. For
3038 * this frame - since we don't need any SGL - we use SGL's space as
3039 * queue info structure
3040 *
3041 * We will not get a NULL command below. We just created the pool.
3042 */
3043 cmd = megasas_get_cmd(instance);
3044
3045 init_frame = (struct megasas_init_frame *)cmd->frame;
3046 initq_info = (struct megasas_init_queue_info *)
3047 ((unsigned long)init_frame + 64);
3048
3049 init_frame_h = cmd->frame_phys_addr;
3050 initq_info_h = init_frame_h + 64;
3051
3052 context = init_frame->context;
3053 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
3054 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
3055 init_frame->context = context;
3056
3057 initq_info->reply_queue_entries = instance->max_fw_cmds + 1;
3058 initq_info->reply_queue_start_phys_addr_lo = instance->reply_queue_h;
3059
3060 initq_info->producer_index_phys_addr_lo = instance->producer_h;
3061 initq_info->consumer_index_phys_addr_lo = instance->consumer_h;
3062
3063 init_frame->cmd = MFI_CMD_INIT;
3064 init_frame->cmd_status = 0xFF;
3065 init_frame->queue_info_new_phys_addr_lo = initq_info_h;
3066
3067 init_frame->data_xfer_len = sizeof(struct megasas_init_queue_info);
3068
3069 /*
3070 * disable the intr before firing the init frame to FW
3071 */
3072 instance->instancet->disable_intr(instance->reg_set);
3073
3074 /*
3075 * Issue the init frame in polled mode
3076 */
3077
3078 if (megasas_issue_polled(instance, cmd)) {
3079 printk(KERN_ERR "megasas: Failed to init firmware\n");
3080 megasas_return_cmd(instance, cmd);
3081 goto fail_fw_init;
3082 }
3083
3084 megasas_return_cmd(instance, cmd);
3085
3086 return 0;
3087
3088fail_fw_init:
3089 return -EINVAL;
3090}
3091
ad84db2e 3092/**
3093 * megasas_start_timer - Initializes a timer object
3094 * @instance: Adapter soft state
3095 * @timer: timer object to be initialized
3096 * @fn: timer function
3097 * @interval: time interval between timer function call
3098 */
3099static inline void
3100megasas_start_timer(struct megasas_instance *instance,
3101 struct timer_list *timer,
3102 void *fn, unsigned long interval)
3103{
3104 init_timer(timer);
3105 timer->expires = jiffies + interval;
3106 timer->data = (unsigned long)instance;
3107 timer->function = fn;
3108 add_timer(timer);
3109}
3110
3111/**
3112 * megasas_io_completion_timer - Timer fn
3113 * @instance_addr: Address of adapter soft state
3114 *
3115 * Schedules tasklet for cmd completion
3116 * if poll_mode_io is set
3117 */
3118static void
3119megasas_io_completion_timer(unsigned long instance_addr)
3120{
3121 struct megasas_instance *instance =
3122 (struct megasas_instance *)instance_addr;
3123
3124 if (atomic_read(&instance->fw_outstanding))
3125 tasklet_schedule(&instance->isr_tasklet);
3126
3127 /* Restart timer */
3128 if (poll_mode_io)
3129 mod_timer(&instance->io_completion_timer,
3130 jiffies + MEGASAS_COMPLETION_TIMER_INTERVAL);
3131}
3132
c4a3e0a5
BS		 3133/**
3134 * megasas_init_mfi - Initializes the FW
3135 * @instance: Adapter soft state
3136 *
3137 * This is the main function for initializing MFI firmware.
3138 */
3139static int megasas_init_mfi(struct megasas_instance *instance)
3140{
3141 u32 context_sz;
3142 u32 reply_q_sz;
3143 u32 max_sectors_1;
3144 u32 max_sectors_2;
14faea9f 3145 u32 tmp_sectors;
c4a3e0a5 3146 struct megasas_register_set __iomem *reg_set;
c4a3e0a5 3147 struct megasas_ctrl_info *ctrl_info;
c4a3e0a5
BS		 3148 /*
3149 * Map the message registers
3150 */
6610a6b3 3151 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
87911122
YB		 3152 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3153 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
6610a6b3
YB		 3154 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0079GEN2)) {
3155 instance->base_addr = pci_resource_start(instance->pdev, 1);
3156 } else {
3157 instance->base_addr = pci_resource_start(instance->pdev, 0);
3158 }
c4a3e0a5 3159
aeab3fd7
NF		 3160 if (pci_request_selected_regions(instance->pdev,
3161 pci_select_bars(instance->pdev, IORESOURCE_MEM),
3162 "megasas: LSI")) {
c4a3e0a5
BS		 3163 printk(KERN_DEBUG "megasas: IO memory region busy!\n");
3164 return -EBUSY;
3165 }
3166
3167 instance->reg_set = ioremap_nocache(instance->base_addr, 8192);
3168
3169 if (!instance->reg_set) {
3170 printk(KERN_DEBUG "megasas: Failed to map IO mem\n");
3171 goto fail_ioremap;
3172 }
3173
3174 reg_set = instance->reg_set;
3175
f9876f0b
SP		 3176 switch(instance->pdev->device)
3177 {
af7a5647 3178 case PCI_DEVICE_ID_LSI_SAS1078R:
3179 case PCI_DEVICE_ID_LSI_SAS1078DE:
f9876f0b
SP		 3180 instance->instancet = &megasas_instance_template_ppc;
3181 break;
6610a6b3
YB		 3182 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
3183 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
3184 instance->instancet = &megasas_instance_template_gen2;
3185 break;
87911122
YB		 3186 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
3187 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
3188 instance->instancet = &megasas_instance_template_skinny;
3189 break;
f9876f0b
SP		 3190 case PCI_DEVICE_ID_LSI_SAS1064R:
3191 case PCI_DEVICE_ID_DELL_PERC5:
3192 default:
3193 instance->instancet = &megasas_instance_template_xscale;
3194 break;
3195 }
1341c939 3196
c4a3e0a5
BS		 3197 /*
3198 * We expect the FW state to be READY
3199 */
1341c939 3200 if (megasas_transition_to_ready(instance))
c4a3e0a5
BS		 3201 goto fail_ready_state;
3202
3203 /*
3204 * Get various operational parameters from status register
3205 */
1341c939 3206 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
e3bbff9f
SP		 3207 /*
3208 * Reduce the max supported cmds by 1. This is to ensure that the
3209 * reply_q_sz (1 more than the max cmd that driver may send)
3210 * does not exceed max cmds that the FW can support
3211 */
3212 instance->max_fw_cmds = instance->max_fw_cmds-1;
1341c939
SP		 3213 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >>
3214 0x10;
c4a3e0a5
BS		 3215 /*
3216 * Create a pool of commands
3217 */
3218 if (megasas_alloc_cmds(instance))
3219 goto fail_alloc_cmds;
3220
3221 /*
3222 * Allocate memory for reply queue. Length of reply queue should
3223 * be _one_ more than the maximum commands handled by the firmware.
3224 *
3225 * Note: When FW completes commands, it places corresponding contex
3226 * values in this circular reply queue. This circular queue is a fairly
3227 * typical producer-consumer queue. FW is the producer (of completed
3228 * commands) and the driver is the consumer.
3229 */
3230 context_sz = sizeof(u32);
3231 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
3232
3233 instance->reply_queue = pci_alloc_consistent(instance->pdev,
3234 reply_q_sz,
3235 &instance->reply_queue_h);
3236
3237 if (!instance->reply_queue) {
3238 printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n");
3239 goto fail_reply_queue;
3240 }
3241
31ea7088 3242 if (megasas_issue_init_mfi(instance))
c4a3e0a5 3243 goto fail_fw_init;
c4a3e0a5 3244
39a98554 3245 instance->fw_support_ieee = 0;
3246 instance->fw_support_ieee =
3247 (instance->instancet->read_fw_status_reg(reg_set) &
3248 0x04000000);
3249
3250 printk(KERN_NOTICE "megasas_init_mfi: fw_support_ieee=%d",
3251 instance->fw_support_ieee);
3252
3253 if (instance->fw_support_ieee)
3254 instance->flag_ieee = 1;
3255
3256 /** for passthrough
3257 * the following function will get the PD LIST.
3258 */
3259
81e403ce
YB		 3260 memset(instance->pd_list, 0 ,
3261 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
3262 megasas_get_pd_list(instance);
3263
bdc6fb8d
YB		 3264 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
3265 megasas_get_ld_list(instance);
3266
c4a3e0a5
BS		 3267 ctrl_info = kmalloc(sizeof(struct megasas_ctrl_info), GFP_KERNEL);
3268
3269 /*
3270 * Compute the max allowed sectors per IO: The controller info has two
3271 * limits on max sectors. Driver should use the minimum of these two.
3272 *
3273 * 1 << stripe_sz_ops.min = max sectors per strip
3274 *
3275 * Note that older firmwares ( < FW ver 30) didn't report information
3276 * to calculate max_sectors_1. So the number ended up as zero always.
3277 */
14faea9f 3278 tmp_sectors = 0;
c4a3e0a5
BS		 3279 if (ctrl_info && !megasas_get_ctrl_info(instance, ctrl_info)) {
3280
3281 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
3282 ctrl_info->max_strips_per_io;
3283 max_sectors_2 = ctrl_info->max_request_size;
3284
14faea9f 3285 tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2);
39a98554 3286 instance->disableOnlineCtrlReset =
3287 ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset;
14faea9f 3288 }
3289
3290 instance->max_sectors_per_req = instance->max_num_sge *
3291 PAGE_SIZE / 512;
3292 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
3293 instance->max_sectors_per_req = tmp_sectors;
c4a3e0a5
BS		 3294
3295 kfree(ctrl_info);
3296
5d018ad0
SP		 3297 /*
3298 * Setup tasklet for cmd completion
3299 */
3300
ad84db2e 3301 tasklet_init(&instance->isr_tasklet, megasas_complete_cmd_dpc,
3302 (unsigned long)instance);
3303
3304 /* Initialize the cmd completion timer */
3305 if (poll_mode_io)
3306 megasas_start_timer(instance, &instance->io_completion_timer,
3307 megasas_io_completion_timer,
3308 MEGASAS_COMPLETION_TIMER_INTERVAL);
c4a3e0a5
BS		 3309 return 0;
3310
3311 fail_fw_init:
c4a3e0a5
BS		 3312
3313 pci_free_consistent(instance->pdev, reply_q_sz,
3314 instance->reply_queue, instance->reply_queue_h);
3315 fail_reply_queue:
3316 megasas_free_cmds(instance);
3317
3318 fail_alloc_cmds:
3319 fail_ready_state:
3320 iounmap(instance->reg_set);
3321
3322 fail_ioremap:
aeab3fd7
NF		 3323 pci_release_selected_regions(instance->pdev,
3324 pci_select_bars(instance->pdev, IORESOURCE_MEM));
c4a3e0a5
BS		 3325
3326 return -EINVAL;
3327}
3328
3329/**
3330 * megasas_release_mfi - Reverses the FW initialization
3331 * @intance: Adapter soft state
3332 */
3333static void megasas_release_mfi(struct megasas_instance *instance)
3334{
3335 u32 reply_q_sz = sizeof(u32) * (instance->max_fw_cmds + 1);
3336
3337 pci_free_consistent(instance->pdev, reply_q_sz,
3338 instance->reply_queue, instance->reply_queue_h);
3339
3340 megasas_free_cmds(instance);
3341
3342 iounmap(instance->reg_set);
3343
aeab3fd7
NF		 3344 pci_release_selected_regions(instance->pdev,
3345 pci_select_bars(instance->pdev, IORESOURCE_MEM));
c4a3e0a5
BS		 3346}
3347
3348/**
3349 * megasas_get_seq_num - Gets latest event sequence numbers
3350 * @instance: Adapter soft state
3351 * @eli: FW event log sequence numbers information
3352 *
3353 * FW maintains a log of all events in a non-volatile area. Upper layers would
3354 * usually find out the latest sequence number of the events, the seq number at
3355 * the boot etc. They would "read" all the events below the latest seq number
3356 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
3357 * number), they would subsribe to AEN (asynchronous event notification) and
3358 * wait for the events to happen.
3359 */
3360static int
3361megasas_get_seq_num(struct megasas_instance *instance,
3362 struct megasas_evt_log_info *eli)
3363{
3364 struct megasas_cmd *cmd;
3365 struct megasas_dcmd_frame *dcmd;
3366 struct megasas_evt_log_info *el_info;
3367 dma_addr_t el_info_h = 0;
3368
3369 cmd = megasas_get_cmd(instance);
3370
3371 if (!cmd) {
3372 return -ENOMEM;
3373 }
3374
3375 dcmd = &cmd->frame->dcmd;
3376 el_info = pci_alloc_consistent(instance->pdev,
3377 sizeof(struct megasas_evt_log_info),
3378 &el_info_h);
3379
3380 if (!el_info) {
3381 megasas_return_cmd(instance, cmd);
3382 return -ENOMEM;
3383 }
3384
3385 memset(el_info, 0, sizeof(*el_info));
3386 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3387
3388 dcmd->cmd = MFI_CMD_DCMD;
3389 dcmd->cmd_status = 0x0;
3390 dcmd->sge_count = 1;
3391 dcmd->flags = MFI_FRAME_DIR_READ;
3392 dcmd->timeout = 0;
780a3762 3393 dcmd->pad_0 = 0;
c4a3e0a5
BS		 3394 dcmd->data_xfer_len = sizeof(struct megasas_evt_log_info);
3395 dcmd->opcode = MR_DCMD_CTRL_EVENT_GET_INFO;
3396 dcmd->sgl.sge32[0].phys_addr = el_info_h;
3397 dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_log_info);
3398
3399 megasas_issue_blocked_cmd(instance, cmd);
3400
3401 /*
3402 * Copy the data back into callers buffer
3403 */
3404 memcpy(eli, el_info, sizeof(struct megasas_evt_log_info));
3405
3406 pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info),
3407 el_info, el_info_h);
3408
3409 megasas_return_cmd(instance, cmd);
3410
3411 return 0;
3412}
3413
3414/**
3415 * megasas_register_aen - Registers for asynchronous event notification
3416 * @instance: Adapter soft state
3417 * @seq_num: The starting sequence number
3418 * @class_locale: Class of the event
3419 *
3420 * This function subscribes for AEN for events beyond the @seq_num. It requests
3421 * to be notified if and only if the event is of type @class_locale
3422 */
3423static int
3424megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
3425 u32 class_locale_word)
3426{
3427 int ret_val;
3428 struct megasas_cmd *cmd;
3429 struct megasas_dcmd_frame *dcmd;
3430 union megasas_evt_class_locale curr_aen;
3431 union megasas_evt_class_locale prev_aen;
3432
3433 /*
3434 * If there an AEN pending already (aen_cmd), check if the
3435 * class_locale of that pending AEN is inclusive of the new
3436 * AEN request we currently have. If it is, then we don't have
3437 * to do anything. In other words, whichever events the current
3438 * AEN request is subscribing to, have already been subscribed
3439 * to.
3440 *
3441 * If the old_cmd is _not_ inclusive, then we have to abort
3442 * that command, form a class_locale that is superset of both
3443 * old and current and re-issue to the FW
3444 */
3445
3446 curr_aen.word = class_locale_word;
3447
3448 if (instance->aen_cmd) {
3449
3450 prev_aen.word = instance->aen_cmd->frame->dcmd.mbox.w[1];
3451
3452 /*
3453 * A class whose enum value is smaller is inclusive of all
3454 * higher values. If a PROGRESS (= -1) was previously
3455 * registered, then a new registration requests for higher
3456 * classes need not be sent to FW. They are automatically
3457 * included.
3458 *
3459 * Locale numbers don't have such hierarchy. They are bitmap
3460 * values
3461 */
3462 if ((prev_aen.members.class <= curr_aen.members.class) &&
3463 !((prev_aen.members.locale & curr_aen.members.locale) ^
3464 curr_aen.members.locale)) {
3465 /*
3466 * Previously issued event registration includes
3467 * current request. Nothing to do.
3468 */
3469 return 0;
3470 } else {
3471 curr_aen.members.locale |= prev_aen.members.locale;
3472
3473 if (prev_aen.members.class < curr_aen.members.class)
3474 curr_aen.members.class = prev_aen.members.class;
3475
3476 instance->aen_cmd->abort_aen = 1;
3477 ret_val = megasas_issue_blocked_abort_cmd(instance,
3478 instance->
3479 aen_cmd);
3480
3481 if (ret_val) {
3482 printk(KERN_DEBUG "megasas: Failed to abort "
3483 "previous AEN command\n");
3484 return ret_val;
3485 }
3486 }
3487 }
3488
3489 cmd = megasas_get_cmd(instance);
3490
3491 if (!cmd)
3492 return -ENOMEM;
3493
3494 dcmd = &cmd->frame->dcmd;
3495
3496 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
3497
3498 /*
3499 * Prepare DCMD for aen registration
3500 */
3501 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3502
3503 dcmd->cmd = MFI_CMD_DCMD;
3504 dcmd->cmd_status = 0x0;
3505 dcmd->sge_count = 1;
3506 dcmd->flags = MFI_FRAME_DIR_READ;
3507 dcmd->timeout = 0;
780a3762 3508 dcmd->pad_0 = 0;
39a98554 3509 instance->last_seq_num = seq_num;
c4a3e0a5
BS		 3510 dcmd->data_xfer_len = sizeof(struct megasas_evt_detail);
3511 dcmd->opcode = MR_DCMD_CTRL_EVENT_WAIT;
3512 dcmd->mbox.w[0] = seq_num;
3513 dcmd->mbox.w[1] = curr_aen.word;
3514 dcmd->sgl.sge32[0].phys_addr = (u32) instance->evt_detail_h;
3515 dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_detail);
3516
f4c9a131
YB		 3517 if (instance->aen_cmd != NULL) {
3518 megasas_return_cmd(instance, cmd);
3519 return 0;
3520 }
3521
c4a3e0a5
BS		 3522 /*
3523 * Store reference to the cmd used to register for AEN. When an
3524 * application wants us to register for AEN, we have to abort this
3525 * cmd and re-register with a new EVENT LOCALE supplied by that app
3526 */
3527 instance->aen_cmd = cmd;
3528
3529 /*
3530 * Issue the aen registration frame
3531 */
0c79e681
YB		 3532 instance->instancet->fire_cmd(instance,
3533 cmd->frame_phys_addr, 0, instance->reg_set);
c4a3e0a5
BS		 3534
3535 return 0;
3536}
3537
3538/**
3539 * megasas_start_aen - Subscribes to AEN during driver load time
3540 * @instance: Adapter soft state
3541 */
3542static int megasas_start_aen(struct megasas_instance *instance)
3543{
3544 struct megasas_evt_log_info eli;
3545 union megasas_evt_class_locale class_locale;
3546
3547 /*
3548 * Get the latest sequence number from FW
3549 */
3550 memset(&eli, 0, sizeof(eli));
3551
3552 if (megasas_get_seq_num(instance, &eli))
3553 return -1;
3554
3555 /*
3556 * Register AEN with FW for latest sequence number plus 1
3557 */
3558 class_locale.members.reserved = 0;
3559 class_locale.members.locale = MR_EVT_LOCALE_ALL;
3560 class_locale.members.class = MR_EVT_CLASS_DEBUG;
3561
3562 return megasas_register_aen(instance, eli.newest_seq_num + 1,
3563 class_locale.word);
3564}
3565
3566/**
3567 * megasas_io_attach - Attaches this driver to SCSI mid-layer
3568 * @instance: Adapter soft state
3569 */
3570static int megasas_io_attach(struct megasas_instance *instance)
3571{
3572 struct Scsi_Host *host = instance->host;
3573
3574 /*
3575 * Export parameters required by SCSI mid-layer
3576 */
3577 host->irq = instance->pdev->irq;
3578 host->unique_id = instance->unique_id;
7bebf5c7
YB		 3579 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3580 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
3581 host->can_queue =
3582 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
3583 } else
3584 host->can_queue =
3585 instance->max_fw_cmds - MEGASAS_INT_CMDS;
c4a3e0a5
BS		 3586 host->this_id = instance->init_id;
3587 host->sg_tablesize = instance->max_num_sge;
3588 host->max_sectors = instance->max_sectors_per_req;
3589 host->cmd_per_lun = 128;
3590 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
3591 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
3592 host->max_lun = MEGASAS_MAX_LUN;
122da302 3593 host->max_cmd_len = 16;
c4a3e0a5
BS		 3594
3595 /*
3596 * Notify the mid-layer about the new controller
3597 */
3598 if (scsi_add_host(host, &instance->pdev->dev)) {
3599 printk(KERN_DEBUG "megasas: scsi_add_host failed\n");
3600 return -ENODEV;
3601 }
3602
3603 /*
3604 * Trigger SCSI to scan our drives
3605 */
3606 scsi_scan_host(host);
3607 return 0;
3608}
3609
31ea7088 3610static int
3611megasas_set_dma_mask(struct pci_dev *pdev)
3612{
3613 /*
3614 * All our contollers are capable of performing 64-bit DMA
3615 */
3616 if (IS_DMA64) {
6a35528a 3617 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
31ea7088 3618
284901a9 3619 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
31ea7088 3620 goto fail_set_dma_mask;
3621 }
3622 } else {
284901a9 3623 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
31ea7088 3624 goto fail_set_dma_mask;
3625 }
3626 return 0;
3627
3628fail_set_dma_mask:
3629 return 1;
3630}
3631
c4a3e0a5
BS		 3632/**
3633 * megasas_probe_one - PCI hotplug entry point
3634 * @pdev: PCI device structure
3635 * @id: PCI ids of supported hotplugged adapter
3636 */
3637static int __devinit
3638megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
3639{
3640 int rval;
3641 struct Scsi_Host *host;
3642 struct megasas_instance *instance;
3643
3644 /*
3645 * Announce PCI information
3646 */
3647 printk(KERN_INFO "megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ",
3648 pdev->vendor, pdev->device, pdev->subsystem_vendor,
3649 pdev->subsystem_device);
3650
3651 printk("bus %d:slot %d:func %d\n",
3652 pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));
3653
3654 /*
3655 * PCI prepping: enable device set bus mastering and dma mask
3656 */
aeab3fd7 3657 rval = pci_enable_device_mem(pdev);
c4a3e0a5
BS		 3658
3659 if (rval) {
3660 return rval;
3661 }
3662
3663 pci_set_master(pdev);
3664
31ea7088 3665 if (megasas_set_dma_mask(pdev))
3666 goto fail_set_dma_mask;
c4a3e0a5
BS		 3667
3668 host = scsi_host_alloc(&megasas_template,
3669 sizeof(struct megasas_instance));
3670
3671 if (!host) {
3672 printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n");
3673 goto fail_alloc_instance;
3674 }
3675
3676 instance = (struct megasas_instance *)host->hostdata;
3677 memset(instance, 0, sizeof(*instance));
39a98554 3678 atomic_set( &instance->fw_reset_no_pci_access, 0 );
c4a3e0a5
BS		 3679
3680 instance->producer = pci_alloc_consistent(pdev, sizeof(u32),
3681 &instance->producer_h);
3682 instance->consumer = pci_alloc_consistent(pdev, sizeof(u32),
3683 &instance->consumer_h);
3684
3685 if (!instance->producer || !instance->consumer) {
3686 printk(KERN_DEBUG "megasas: Failed to allocate memory for "
3687 "producer, consumer\n");
3688 goto fail_alloc_dma_buf;
3689 }
3690
3691 *instance->producer = 0;
3692 *instance->consumer = 0;
c3518837 3693 megasas_poll_wait_aen = 0;
f4c9a131 3694 instance->flag_ieee = 0;
7e8a75f4 3695 instance->ev = NULL;
39a98554 3696 instance->issuepend_done = 1;
3697 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
3698 megasas_poll_wait_aen = 0;
c4a3e0a5
BS		 3699
3700 instance->evt_detail = pci_alloc_consistent(pdev,
3701 sizeof(struct
3702 megasas_evt_detail),
3703 &instance->evt_detail_h);
3704
3705 if (!instance->evt_detail) {
3706 printk(KERN_DEBUG "megasas: Failed to allocate memory for "
3707 "event detail structure\n");
3708 goto fail_alloc_dma_buf;
3709 }
3710
3711 /*
3712 * Initialize locks and queues
3713 */
3714 INIT_LIST_HEAD(&instance->cmd_pool);
39a98554 3715 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
c4a3e0a5 3716
e4a082c7
SP		 3717 atomic_set(&instance->fw_outstanding,0);
3718
c4a3e0a5
BS		 3719 init_waitqueue_head(&instance->int_cmd_wait_q);
3720 init_waitqueue_head(&instance->abort_cmd_wait_q);
3721
3722 spin_lock_init(&instance->cmd_pool_lock);
39a98554 3723 spin_lock_init(&instance->hba_lock);
7343eb65 3724 spin_lock_init(&instance->completion_lock);
c3518837 3725 spin_lock_init(&poll_aen_lock);
c4a3e0a5 3726
e5a69e27 3727 mutex_init(&instance->aen_mutex);
c4a3e0a5
BS		 3728
3729 /*
3730 * Initialize PCI related and misc parameters
3731 */
3732 instance->pdev = pdev;
3733 instance->host = host;
3734 instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
3735 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
3736
7bebf5c7
YB		 3737 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3738 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
f4c9a131 3739 instance->flag_ieee = 1;
7bebf5c7
YB		 3740 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
3741 } else
3742 sema_init(&instance->ioctl_sem, MEGASAS_INT_CMDS);
3743
658dcedb 3744 megasas_dbg_lvl = 0;
05e9ebbe 3745 instance->flag = 0;
0c79e681 3746 instance->unload = 1;
05e9ebbe 3747 instance->last_time = 0;
39a98554 3748 instance->disableOnlineCtrlReset = 1;
3749
3750 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
658dcedb 3751
c4a3e0a5
BS		 3752 /*
3753 * Initialize MFI Firmware
3754 */
3755 if (megasas_init_mfi(instance))
3756 goto fail_init_mfi;
3757
3758 /*
3759 * Register IRQ
3760 */
1d6f359a 3761 if (request_irq(pdev->irq, megasas_isr, IRQF_SHARED, "megasas", instance)) {
c4a3e0a5
BS		 3762 printk(KERN_DEBUG "megasas: Failed to register IRQ\n");
3763 goto fail_irq;
3764 }
3765
1341c939 3766 instance->instancet->enable_intr(instance->reg_set);
c4a3e0a5
BS		 3767
3768 /*
3769 * Store instance in PCI softstate
3770 */
3771 pci_set_drvdata(pdev, instance);
3772
3773 /*
3774 * Add this controller to megasas_mgmt_info structure so that it
3775 * can be exported to management applications
3776 */
3777 megasas_mgmt_info.count++;
3778 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
3779 megasas_mgmt_info.max_index++;
3780
3781 /*
3782 * Initiate AEN (Asynchronous Event Notification)
3783 */
3784 if (megasas_start_aen(instance)) {
3785 printk(KERN_DEBUG "megasas: start aen failed\n");
3786 goto fail_start_aen;
3787 }
3788
3789 /*
3790 * Register with SCSI mid-layer
3791 */
3792 if (megasas_io_attach(instance))
3793 goto fail_io_attach;
3794
0c79e681 3795 instance->unload = 0;
c4a3e0a5
BS		 3796 return 0;
3797
3798 fail_start_aen:
3799 fail_io_attach:
3800 megasas_mgmt_info.count--;
3801 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
3802 megasas_mgmt_info.max_index--;
3803
3804 pci_set_drvdata(pdev, NULL);
b274cab7 3805 instance->instancet->disable_intr(instance->reg_set);
c4a3e0a5
BS		 3806 free_irq(instance->pdev->irq, instance);
3807
3808 megasas_release_mfi(instance);
3809
3810 fail_irq:
3811 fail_init_mfi:
3812 fail_alloc_dma_buf:
3813 if (instance->evt_detail)
3814 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
3815 instance->evt_detail,
3816 instance->evt_detail_h);
3817
3818 if (instance->producer)
3819 pci_free_consistent(pdev, sizeof(u32), instance->producer,
3820 instance->producer_h);
3821 if (instance->consumer)
3822 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
3823 instance->consumer_h);
3824 scsi_host_put(host);
3825
3826 fail_alloc_instance:
3827 fail_set_dma_mask:
3828 pci_disable_device(pdev);
3829
3830 return -ENODEV;
3831}
3832
3833/**
3834 * megasas_flush_cache - Requests FW to flush all its caches
3835 * @instance: Adapter soft state
3836 */
3837static void megasas_flush_cache(struct megasas_instance *instance)
3838{
3839 struct megasas_cmd *cmd;
3840 struct megasas_dcmd_frame *dcmd;
3841
39a98554 3842 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
3843 return;
3844
c4a3e0a5
BS		 3845 cmd = megasas_get_cmd(instance);
3846
3847 if (!cmd)
3848 return;
3849
3850 dcmd = &cmd->frame->dcmd;
3851
3852 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3853
3854 dcmd->cmd = MFI_CMD_DCMD;
3855 dcmd->cmd_status = 0x0;
3856 dcmd->sge_count = 0;
3857 dcmd->flags = MFI_FRAME_DIR_NONE;
3858 dcmd->timeout = 0;
780a3762 3859 dcmd->pad_0 = 0;
c4a3e0a5
BS		 3860 dcmd->data_xfer_len = 0;
3861 dcmd->opcode = MR_DCMD_CTRL_CACHE_FLUSH;
3862 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
3863
3864 megasas_issue_blocked_cmd(instance, cmd);
3865
3866 megasas_return_cmd(instance, cmd);
3867
3868 return;
3869}
3870
3871/**
3872 * megasas_shutdown_controller - Instructs FW to shutdown the controller
3873 * @instance: Adapter soft state
31ea7088 3874 * @opcode: Shutdown/Hibernate
c4a3e0a5 3875 */
31ea7088 3876static void megasas_shutdown_controller(struct megasas_instance *instance,
3877 u32 opcode)
c4a3e0a5
BS		 3878{
3879 struct megasas_cmd *cmd;
3880 struct megasas_dcmd_frame *dcmd;
3881
39a98554 3882 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
3883 return;
3884
c4a3e0a5
BS		 3885 cmd = megasas_get_cmd(instance);
3886
3887 if (!cmd)
3888 return;
3889
3890 if (instance->aen_cmd)
3891 megasas_issue_blocked_abort_cmd(instance, instance->aen_cmd);
3892
3893 dcmd = &cmd->frame->dcmd;
3894
3895 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3896
3897 dcmd->cmd = MFI_CMD_DCMD;
3898 dcmd->cmd_status = 0x0;
3899 dcmd->sge_count = 0;
3900 dcmd->flags = MFI_FRAME_DIR_NONE;
3901 dcmd->timeout = 0;
780a3762 3902 dcmd->pad_0 = 0;
c4a3e0a5 3903 dcmd->data_xfer_len = 0;
31ea7088 3904 dcmd->opcode = opcode;
c4a3e0a5
BS		 3905
3906 megasas_issue_blocked_cmd(instance, cmd);
3907
3908 megasas_return_cmd(instance, cmd);
3909
3910 return;
3911}
3912
33139b21 3913#ifdef CONFIG_PM
31ea7088 3914/**
ad84db2e 3915 * megasas_suspend - driver suspend entry point
3916 * @pdev: PCI device structure
31ea7088 3917 * @state: PCI power state to suspend routine
3918 */
33139b21 3919static int
31ea7088 3920megasas_suspend(struct pci_dev *pdev, pm_message_t state)
3921{
3922 struct Scsi_Host *host;
3923 struct megasas_instance *instance;
3924
3925 instance = pci_get_drvdata(pdev);
3926 host = instance->host;
0c79e681 3927 instance->unload = 1;
31ea7088 3928
ad84db2e 3929 if (poll_mode_io)
3930 del_timer_sync(&instance->io_completion_timer);
3931
31ea7088 3932 megasas_flush_cache(instance);
3933 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
7e8a75f4
YB		 3934
3935 /* cancel the delayed work if this work still in queue */
3936 if (instance->ev != NULL) {
3937 struct megasas_aen_event *ev = instance->ev;
3938 cancel_delayed_work(
3939 (struct delayed_work *)&ev->hotplug_work);
3940 flush_scheduled_work();
3941 instance->ev = NULL;
3942 }
3943
31ea7088 3944 tasklet_kill(&instance->isr_tasklet);
3945
3946 pci_set_drvdata(instance->pdev, instance);
3947 instance->instancet->disable_intr(instance->reg_set);
3948 free_irq(instance->pdev->irq, instance);
3949
3950 pci_save_state(pdev);
3951 pci_disable_device(pdev);
3952
3953 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3954
3955 return 0;
3956}
3957
3958/**
3959 * megasas_resume- driver resume entry point
3960 * @pdev: PCI device structure
3961 */
33139b21 3962static int
31ea7088 3963megasas_resume(struct pci_dev *pdev)
3964{
3965 int rval;
3966 struct Scsi_Host *host;
3967 struct megasas_instance *instance;
3968
3969 instance = pci_get_drvdata(pdev);
3970 host = instance->host;
3971 pci_set_power_state(pdev, PCI_D0);
3972 pci_enable_wake(pdev, PCI_D0, 0);
3973 pci_restore_state(pdev);
3974
3975 /*
3976 * PCI prepping: enable device set bus mastering and dma mask
3977 */
aeab3fd7 3978 rval = pci_enable_device_mem(pdev);
31ea7088 3979
3980 if (rval) {
3981 printk(KERN_ERR "megasas: Enable device failed\n");
3982 return rval;
3983 }
3984
3985 pci_set_master(pdev);
3986
3987 if (megasas_set_dma_mask(pdev))
3988 goto fail_set_dma_mask;
3989
3990 /*
3991 * Initialize MFI Firmware
3992 */
3993
3994 *instance->producer = 0;
3995 *instance->consumer = 0;
3996
3997 atomic_set(&instance->fw_outstanding, 0);
3998
3999 /*
4000 * We expect the FW state to be READY
4001 */
4002 if (megasas_transition_to_ready(instance))
4003 goto fail_ready_state;
4004
4005 if (megasas_issue_init_mfi(instance))
4006 goto fail_init_mfi;
4007
4008 tasklet_init(&instance->isr_tasklet, megasas_complete_cmd_dpc,
4009 (unsigned long)instance);
4010
4011 /*
4012 * Register IRQ
4013 */
4014 if (request_irq(pdev->irq, megasas_isr, IRQF_SHARED,
4015 "megasas", instance)) {
4016 printk(KERN_ERR "megasas: Failed to register IRQ\n");
4017 goto fail_irq;
4018 }
4019
4020 instance->instancet->enable_intr(instance->reg_set);
4021
4022 /*
4023 * Initiate AEN (Asynchronous Event Notification)
4024 */
4025 if (megasas_start_aen(instance))
4026 printk(KERN_ERR "megasas: Start AEN failed\n");
4027
ad84db2e 4028 /* Initialize the cmd completion timer */
4029 if (poll_mode_io)
4030 megasas_start_timer(instance, &instance->io_completion_timer,
4031 megasas_io_completion_timer,
4032 MEGASAS_COMPLETION_TIMER_INTERVAL);
0c79e681
YB		 4033 instance->unload = 0;
4034
31ea7088 4035 return 0;
4036
4037fail_irq:
4038fail_init_mfi:
4039 if (instance->evt_detail)
4040 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
4041 instance->evt_detail,
4042 instance->evt_detail_h);
4043
4044 if (instance->producer)
4045 pci_free_consistent(pdev, sizeof(u32), instance->producer,
4046 instance->producer_h);
4047 if (instance->consumer)
4048 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
4049 instance->consumer_h);
4050 scsi_host_put(host);
4051
4052fail_set_dma_mask:
4053fail_ready_state:
4054
4055 pci_disable_device(pdev);
4056
4057 return -ENODEV;
4058}
33139b21
JS		 4059#else
4060#define megasas_suspend NULL
4061#define megasas_resume NULL
4062#endif
31ea7088 4063
c4a3e0a5
BS		 4064/**
4065 * megasas_detach_one - PCI hot"un"plug entry point
4066 * @pdev: PCI device structure
4067 */
33139b21 4068static void __devexit megasas_detach_one(struct pci_dev *pdev)
c4a3e0a5
BS		 4069{
4070 int i;
4071 struct Scsi_Host *host;
4072 struct megasas_instance *instance;
4073
4074 instance = pci_get_drvdata(pdev);
c3518837 4075 instance->unload = 1;
c4a3e0a5
BS		 4076 host = instance->host;
4077
ad84db2e 4078 if (poll_mode_io)
4079 del_timer_sync(&instance->io_completion_timer);
4080
c4a3e0a5
BS		 4081 scsi_remove_host(instance->host);
4082 megasas_flush_cache(instance);
31ea7088 4083 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7e8a75f4
YB		 4084
4085 /* cancel the delayed work if this work still in queue*/
4086 if (instance->ev != NULL) {
4087 struct megasas_aen_event *ev = instance->ev;
4088 cancel_delayed_work(
4089 (struct delayed_work *)&ev->hotplug_work);
4090 flush_scheduled_work();
4091 instance->ev = NULL;
4092 }
4093
5d018ad0 4094 tasklet_kill(&instance->isr_tasklet);
c4a3e0a5
BS		 4095
4096 /*
4097 * Take the instance off the instance array. Note that we will not
4098 * decrement the max_index. We let this array be sparse array
4099 */
4100 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
4101 if (megasas_mgmt_info.instance[i] == instance) {
4102 megasas_mgmt_info.count--;
4103 megasas_mgmt_info.instance[i] = NULL;
4104
4105 break;
4106 }
4107 }
4108
4109 pci_set_drvdata(instance->pdev, NULL);
4110
b274cab7 4111 instance->instancet->disable_intr(instance->reg_set);
c4a3e0a5
BS		 4112
4113 free_irq(instance->pdev->irq, instance);
4114
4115 megasas_release_mfi(instance);
4116
4117 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
4118 instance->evt_detail, instance->evt_detail_h);
4119
4120 pci_free_consistent(pdev, sizeof(u32), instance->producer,
4121 instance->producer_h);
4122
4123 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
4124 instance->consumer_h);
4125
4126 scsi_host_put(host);
4127
4128 pci_set_drvdata(pdev, NULL);
4129
4130 pci_disable_device(pdev);
4131
4132 return;
4133}
4134
4135/**
4136 * megasas_shutdown - Shutdown entry point
4137 * @device: Generic device structure
4138 */
4139static void megasas_shutdown(struct pci_dev *pdev)
4140{
4141 struct megasas_instance *instance = pci_get_drvdata(pdev);
0c79e681 4142 instance->unload = 1;
c4a3e0a5 4143 megasas_flush_cache(instance);
530e6fc1 4144 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
c4a3e0a5
BS		 4145}
4146
4147/**
4148 * megasas_mgmt_open - char node "open" entry point
4149 */
4150static int megasas_mgmt_open(struct inode *inode, struct file *filep)
4151{
4152 /*
4153 * Allow only those users with admin rights
4154 */
4155 if (!capable(CAP_SYS_ADMIN))
4156 return -EACCES;
4157
4158 return 0;
4159}
4160
c4a3e0a5
BS		 4161/**
4162 * megasas_mgmt_fasync - Async notifier registration from applications
4163 *
4164 * This function adds the calling process to a driver global queue. When an
4165 * event occurs, SIGIO will be sent to all processes in this queue.
4166 */
4167static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
4168{
4169 int rc;
4170
0b950672 4171 mutex_lock(&megasas_async_queue_mutex);
c4a3e0a5
BS		 4172
4173 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
4174
0b950672 4175 mutex_unlock(&megasas_async_queue_mutex);
c4a3e0a5
BS		 4176
4177 if (rc >= 0) {
4178 /* For sanity check when we get ioctl */
4179 filep->private_data = filep;
4180 return 0;
4181 }
4182
4183 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
4184
4185 return rc;
4186}
4187
c3518837
YB		 4188/**
4189 * megasas_mgmt_poll - char node "poll" entry point
4190 * */
4191static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait)
4192{
4193 unsigned int mask;
4194 unsigned long flags;
4195 poll_wait(file, &megasas_poll_wait, wait);
4196 spin_lock_irqsave(&poll_aen_lock, flags);
4197 if (megasas_poll_wait_aen)
4198 mask = (POLLIN | POLLRDNORM);
4199 else
4200 mask = 0;
4201 spin_unlock_irqrestore(&poll_aen_lock, flags);
4202 return mask;
4203}
4204
c4a3e0a5
BS		 4205/**
4206 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
4207 * @instance: Adapter soft state
4208 * @argp: User's ioctl packet
4209 */
4210static int
4211megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
4212 struct megasas_iocpacket __user * user_ioc,
4213 struct megasas_iocpacket *ioc)
4214{
4215 struct megasas_sge32 *kern_sge32;
4216 struct megasas_cmd *cmd;
4217 void *kbuff_arr[MAX_IOCTL_SGE];
4218 dma_addr_t buf_handle = 0;
4219 int error = 0, i;
4220 void *sense = NULL;
4221 dma_addr_t sense_handle;
7b2519af 4222 unsigned long *sense_ptr;
c4a3e0a5
BS		 4223
4224 memset(kbuff_arr, 0, sizeof(kbuff_arr));
4225
4226 if (ioc->sge_count > MAX_IOCTL_SGE) {
4227 printk(KERN_DEBUG "megasas: SGE count [%d] > max limit [%d]\n",
4228 ioc->sge_count, MAX_IOCTL_SGE);
4229 return -EINVAL;
4230 }
4231
4232 cmd = megasas_get_cmd(instance);
4233 if (!cmd) {
4234 printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n");
4235 return -ENOMEM;
4236 }
4237
4238 /*
4239 * User's IOCTL packet has 2 frames (maximum). Copy those two
4240 * frames into our cmd's frames. cmd->frame's context will get
4241 * overwritten when we copy from user's frames. So set that value
4242 * alone separately
4243 */
4244 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
4245 cmd->frame->hdr.context = cmd->index;
c3518837 4246 cmd->frame->hdr.pad_0 = 0;
c4a3e0a5
BS		 4247
4248 /*
4249 * The management interface between applications and the fw uses
4250 * MFI frames. E.g, RAID configuration changes, LD property changes
4251 * etc are accomplishes through different kinds of MFI frames. The
4252 * driver needs to care only about substituting user buffers with
4253 * kernel buffers in SGLs. The location of SGL is embedded in the
4254 * struct iocpacket itself.
4255 */
4256 kern_sge32 = (struct megasas_sge32 *)
4257 ((unsigned long)cmd->frame + ioc->sgl_off);
4258
4259 /*
4260 * For each user buffer, create a mirror buffer and copy in
4261 */
4262 for (i = 0; i < ioc->sge_count; i++) {
9f35fa8a 4263 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
c4a3e0a5 4264 ioc->sgl[i].iov_len,
9f35fa8a 4265 &buf_handle, GFP_KERNEL);
c4a3e0a5
BS		 4266 if (!kbuff_arr[i]) {
4267 printk(KERN_DEBUG "megasas: Failed to alloc "
4268 "kernel SGL buffer for IOCTL \n");
4269 error = -ENOMEM;
4270 goto out;
4271 }
4272
4273 /*
4274 * We don't change the dma_coherent_mask, so
4275 * pci_alloc_consistent only returns 32bit addresses
4276 */
4277 kern_sge32[i].phys_addr = (u32) buf_handle;
4278 kern_sge32[i].length = ioc->sgl[i].iov_len;
4279
4280 /*
4281 * We created a kernel buffer corresponding to the
4282 * user buffer. Now copy in from the user buffer
4283 */
4284 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
4285 (u32) (ioc->sgl[i].iov_len))) {
4286 error = -EFAULT;
4287 goto out;
4288 }
4289 }
4290
4291 if (ioc->sense_len) {
9f35fa8a
SP		 4292 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
4293 &sense_handle, GFP_KERNEL);
c4a3e0a5
BS		 4294 if (!sense) {
4295 error = -ENOMEM;
4296 goto out;
4297 }
4298
4299 sense_ptr =
7b2519af 4300 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
c4a3e0a5
BS		 4301 *sense_ptr = sense_handle;
4302 }
4303
4304 /*
4305 * Set the sync_cmd flag so that the ISR knows not to complete this
4306 * cmd to the SCSI mid-layer
4307 */
4308 cmd->sync_cmd = 1;
4309 megasas_issue_blocked_cmd(instance, cmd);
4310 cmd->sync_cmd = 0;
4311
4312 /*
4313 * copy out the kernel buffers to user buffers
4314 */
4315 for (i = 0; i < ioc->sge_count; i++) {
4316 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
4317 ioc->sgl[i].iov_len)) {
4318 error = -EFAULT;
4319 goto out;
4320 }
4321 }
4322
4323 /*
4324 * copy out the sense
4325 */
4326 if (ioc->sense_len) {
4327 /*
b70a41e0 4328 * sense_ptr points to the location that has the user
c4a3e0a5
BS		 4329 * sense buffer address
4330 */
7b2519af
YB		 4331 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
4332 ioc->sense_off);
c4a3e0a5 4333
b70a41e0 4334 if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)),
4335 sense, ioc->sense_len)) {
b10c36a5 4336 printk(KERN_ERR "megasas: Failed to copy out to user "
4337 "sense data\n");
c4a3e0a5
BS		 4338 error = -EFAULT;
4339 goto out;
4340 }
4341 }
4342
4343 /*
4344 * copy the status codes returned by the fw
4345 */
4346 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
4347 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
4348 printk(KERN_DEBUG "megasas: Error copying out cmd_status\n");
4349 error = -EFAULT;
4350 }
4351
4352 out:
4353 if (sense) {
9f35fa8a 4354 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
c4a3e0a5
BS		 4355 sense, sense_handle);
4356 }
4357
4358 for (i = 0; i < ioc->sge_count && kbuff_arr[i]; i++) {
9f35fa8a 4359 dma_free_coherent(&instance->pdev->dev,
c4a3e0a5
BS		 4360 kern_sge32[i].length,
4361 kbuff_arr[i], kern_sge32[i].phys_addr);
4362 }
4363
4364 megasas_return_cmd(instance, cmd);
4365 return error;
4366}
4367
c4a3e0a5
BS		 4368static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
4369{
4370 struct megasas_iocpacket __user *user_ioc =
4371 (struct megasas_iocpacket __user *)arg;
4372 struct megasas_iocpacket *ioc;
4373 struct megasas_instance *instance;
4374 int error;
39a98554 4375 int i;
4376 unsigned long flags;
4377 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 4378
4379 ioc = kmalloc(sizeof(*ioc), GFP_KERNEL);
4380 if (!ioc)
4381 return -ENOMEM;
4382
4383 if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) {
4384 error = -EFAULT;
4385 goto out_kfree_ioc;
4386 }
4387
4388 instance = megasas_lookup_instance(ioc->host_no);
4389 if (!instance) {
4390 error = -ENODEV;
4391 goto out_kfree_ioc;
4392 }
4393
39a98554 4394 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
4395 printk(KERN_ERR "Controller in crit error\n");
0c79e681
YB		 4396 error = -ENODEV;
4397 goto out_kfree_ioc;
4398 }
4399
4400 if (instance->unload == 1) {
4401 error = -ENODEV;
4402 goto out_kfree_ioc;
4403 }
4404
c4a3e0a5
BS		 4405 /*
4406 * We will allow only MEGASAS_INT_CMDS number of parallel ioctl cmds
4407 */
4408 if (down_interruptible(&instance->ioctl_sem)) {
4409 error = -ERESTARTSYS;
4410 goto out_kfree_ioc;
4411 }
39a98554 4412
4413 for (i = 0; i < wait_time; i++) {
4414
4415 spin_lock_irqsave(&instance->hba_lock, flags);
4416 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
4417 spin_unlock_irqrestore(&instance->hba_lock, flags);
4418 break;
4419 }
4420 spin_unlock_irqrestore(&instance->hba_lock, flags);
4421
4422 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
4423 printk(KERN_NOTICE "megasas: waiting"
4424 "for controller reset to finish\n");
4425 }
4426
4427 msleep(1000);
4428 }
4429
4430 spin_lock_irqsave(&instance->hba_lock, flags);
4431 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
4432 spin_unlock_irqrestore(&instance->hba_lock, flags);
4433
4434 printk(KERN_ERR "megaraid_sas: timed out while"
4435 "waiting for HBA to recover\n");
4436 error = -ENODEV;
4437 goto out_kfree_ioc;
4438 }
4439 spin_unlock_irqrestore(&instance->hba_lock, flags);
4440
c4a3e0a5
BS		 4441 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
4442 up(&instance->ioctl_sem);
4443
4444 out_kfree_ioc:
4445 kfree(ioc);
4446 return error;
4447}
4448
4449static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
4450{
4451 struct megasas_instance *instance;
4452 struct megasas_aen aen;
4453 int error;
39a98554 4454 int i;
4455 unsigned long flags;
4456 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 4457
4458 if (file->private_data != file) {
4459 printk(KERN_DEBUG "megasas: fasync_helper was not "
4460 "called first\n");
4461 return -EINVAL;
4462 }
4463
4464 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
4465 return -EFAULT;
4466
4467 instance = megasas_lookup_instance(aen.host_no);
4468
4469 if (!instance)
4470 return -ENODEV;
4471
39a98554 4472 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
4473 return -ENODEV;
0c79e681
YB		 4474 }
4475
4476 if (instance->unload == 1) {
4477 return -ENODEV;
4478 }
4479
39a98554 4480 for (i = 0; i < wait_time; i++) {
4481
4482 spin_lock_irqsave(&instance->hba_lock, flags);
4483 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
4484 spin_unlock_irqrestore(&instance->hba_lock,
4485 flags);
4486 break;
4487 }
4488
4489 spin_unlock_irqrestore(&instance->hba_lock, flags);
4490
4491 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
4492 printk(KERN_NOTICE "megasas: waiting for"
4493 "controller reset to finish\n");
4494 }
4495
4496 msleep(1000);
4497 }
4498
4499 spin_lock_irqsave(&instance->hba_lock, flags);
4500 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
4501 spin_unlock_irqrestore(&instance->hba_lock, flags);
4502 printk(KERN_ERR "megaraid_sas: timed out while waiting"
4503 "for HBA to recover.\n");
4504 return -ENODEV;
4505 }
4506 spin_unlock_irqrestore(&instance->hba_lock, flags);
4507
e5a69e27 4508 mutex_lock(&instance->aen_mutex);
c4a3e0a5
BS		 4509 error = megasas_register_aen(instance, aen.seq_num,
4510 aen.class_locale_word);
e5a69e27 4511 mutex_unlock(&instance->aen_mutex);
c4a3e0a5
BS		 4512 return error;
4513}
4514
4515/**
4516 * megasas_mgmt_ioctl - char node ioctl entry point
4517 */
4518static long
4519megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
4520{
4521 switch (cmd) {
4522 case MEGASAS_IOC_FIRMWARE:
4523 return megasas_mgmt_ioctl_fw(file, arg);
4524
4525 case MEGASAS_IOC_GET_AEN:
4526 return megasas_mgmt_ioctl_aen(file, arg);
4527 }
4528
4529 return -ENOTTY;
4530}
4531
4532#ifdef CONFIG_COMPAT
4533static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
4534{
4535 struct compat_megasas_iocpacket __user *cioc =
4536 (struct compat_megasas_iocpacket __user *)arg;
4537 struct megasas_iocpacket __user *ioc =
4538 compat_alloc_user_space(sizeof(struct megasas_iocpacket));
4539 int i;
4540 int error = 0;
b3dc1a21 4541 compat_uptr_t ptr;
c4a3e0a5 4542
83aabc1b
JG		 4543 if (clear_user(ioc, sizeof(*ioc)))
4544 return -EFAULT;
c4a3e0a5
BS		 4545
4546 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
4547 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
4548 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
4549 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
4550 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
4551 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
4552 return -EFAULT;
4553
b3dc1a21
TH		 4554 /*
4555 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
4556 * sense_len is not null, so prepare the 64bit value under
4557 * the same condition.
4558 */
4559 if (ioc->sense_len) {
4560 void __user **sense_ioc_ptr =
4561 (void __user **)(ioc->frame.raw + ioc->sense_off);
4562 compat_uptr_t *sense_cioc_ptr =
4563 (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off);
4564 if (get_user(ptr, sense_cioc_ptr) ||
4565 put_user(compat_ptr(ptr), sense_ioc_ptr))
4566 return -EFAULT;
4567 }
c4a3e0a5 4568
b3dc1a21 4569 for (i = 0; i < MAX_IOCTL_SGE; i++) {
c4a3e0a5
BS		 4570 if (get_user(ptr, &cioc->sgl[i].iov_base) ||
4571 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
4572 copy_in_user(&ioc->sgl[i].iov_len,
4573 &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
4574 return -EFAULT;
4575 }
4576
4577 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
4578
4579 if (copy_in_user(&cioc->frame.hdr.cmd_status,
4580 &ioc->frame.hdr.cmd_status, sizeof(u8))) {
4581 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
4582 return -EFAULT;
4583 }
4584 return error;
4585}
4586
4587static long
4588megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
4589 unsigned long arg)
4590{
4591 switch (cmd) {
cb59aa6a
SP		 4592 case MEGASAS_IOC_FIRMWARE32:
4593 return megasas_mgmt_compat_ioctl_fw(file, arg);
c4a3e0a5
BS		 4594 case MEGASAS_IOC_GET_AEN:
4595 return megasas_mgmt_ioctl_aen(file, arg);
4596 }
4597
4598 return -ENOTTY;
4599}
4600#endif
4601
4602/*
4603 * File operations structure for management interface
4604 */
00977a59 4605static const struct file_operations megasas_mgmt_fops = {
c4a3e0a5
BS		 4606 .owner = THIS_MODULE,
4607 .open = megasas_mgmt_open,
c4a3e0a5
BS		 4608 .fasync = megasas_mgmt_fasync,
4609 .unlocked_ioctl = megasas_mgmt_ioctl,
c3518837 4610 .poll = megasas_mgmt_poll,
c4a3e0a5
BS		 4611#ifdef CONFIG_COMPAT
4612 .compat_ioctl = megasas_mgmt_compat_ioctl,
4613#endif
6038f373 4614 .llseek = noop_llseek,
c4a3e0a5
BS		 4615};
4616
4617/*
4618 * PCI hotplug support registration structure
4619 */
4620static struct pci_driver megasas_pci_driver = {
4621
4622 .name = "megaraid_sas",
4623 .id_table = megasas_pci_table,
4624 .probe = megasas_probe_one,
4625 .remove = __devexit_p(megasas_detach_one),
31ea7088 4626 .suspend = megasas_suspend,
4627 .resume = megasas_resume,
c4a3e0a5
BS		 4628 .shutdown = megasas_shutdown,
4629};
4630
4631/*
4632 * Sysfs driver attributes
4633 */
4634static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf)
4635{
4636 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
4637 MEGASAS_VERSION);
4638}
4639
4640static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL);
4641
4642static ssize_t
4643megasas_sysfs_show_release_date(struct device_driver *dd, char *buf)
4644{
4645 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
4646 MEGASAS_RELDATE);
4647}
4648
4649static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date,
4650 NULL);
4651
72c4fd36
YB		 4652static ssize_t
4653megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf)
4654{
4655 return sprintf(buf, "%u\n", support_poll_for_event);
4656}
4657
4658static DRIVER_ATTR(support_poll_for_event, S_IRUGO,
4659 megasas_sysfs_show_support_poll_for_event, NULL);
4660
658dcedb
SP		 4661static ssize_t
4662megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf)
4663{
ad84db2e 4664 return sprintf(buf, "%u\n", megasas_dbg_lvl);
658dcedb
SP		 4665}
4666
4667static ssize_t
4668megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count)
4669{
4670 int retval = count;
4671 if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){
4672 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
4673 retval = -EINVAL;
4674 }
4675 return retval;
4676}
4677
66dca9b8 4678static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl,
ad84db2e 4679 megasas_sysfs_set_dbg_lvl);
4680
4681static ssize_t
4682megasas_sysfs_show_poll_mode_io(struct device_driver *dd, char *buf)
4683{
4684 return sprintf(buf, "%u\n", poll_mode_io);
4685}
4686
4687static ssize_t
4688megasas_sysfs_set_poll_mode_io(struct device_driver *dd,
4689 const char *buf, size_t count)
4690{
4691 int retval = count;
4692 int tmp = poll_mode_io;
4693 int i;
4694 struct megasas_instance *instance;
4695
4696 if (sscanf(buf, "%u", &poll_mode_io) < 1) {
4697 printk(KERN_ERR "megasas: could not set poll_mode_io\n");
4698 retval = -EINVAL;
4699 }
4700
4701 /*
4702 * Check if poll_mode_io is already set or is same as previous value
4703 */
4704 if ((tmp && poll_mode_io) || (tmp == poll_mode_io))
4705 goto out;
4706
4707 if (poll_mode_io) {
4708 /*
4709 * Start timers for all adapters
4710 */
4711 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
4712 instance = megasas_mgmt_info.instance[i];
4713 if (instance) {
4714 megasas_start_timer(instance,
4715 &instance->io_completion_timer,
4716 megasas_io_completion_timer,
4717 MEGASAS_COMPLETION_TIMER_INTERVAL);
4718 }
4719 }
4720 } else {
4721 /*
4722 * Delete timers for all adapters
4723 */
4724 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
4725 instance = megasas_mgmt_info.instance[i];
4726 if (instance)
4727 del_timer_sync(&instance->io_completion_timer);
4728 }
4729 }
4730
4731out:
4732 return retval;
4733}
4734
7e8a75f4
YB		 4735static void
4736megasas_aen_polling(struct work_struct *work)
4737{
4738 struct megasas_aen_event *ev =
4739 container_of(work, struct megasas_aen_event, hotplug_work);
4740 struct megasas_instance *instance = ev->instance;
4741 union megasas_evt_class_locale class_locale;
4742 struct Scsi_Host *host;
4743 struct scsi_device *sdev1;
4744 u16 pd_index = 0;
c9786842 4745 u16 ld_index = 0;
7e8a75f4
YB		 4746 int i, j, doscan = 0;
4747 u32 seq_num;
4748 int error;
4749
4750 if (!instance) {
4751 printk(KERN_ERR "invalid instance!\n");
4752 kfree(ev);
4753 return;
4754 }
4755 instance->ev = NULL;
4756 host = instance->host;
4757 if (instance->evt_detail) {
4758
4759 switch (instance->evt_detail->code) {
4760 case MR_EVT_PD_INSERTED:
c9786842
YB		 4761 if (megasas_get_pd_list(instance) == 0) {
4762 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
4763 for (j = 0;
4764 j < MEGASAS_MAX_DEV_PER_CHANNEL;
4765 j++) {
4766
4767 pd_index =
4768 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
4769
4770 sdev1 =
4771 scsi_device_lookup(host, i, j, 0);
4772
4773 if (instance->pd_list[pd_index].driveState
4774 == MR_PD_STATE_SYSTEM) {
4775 if (!sdev1) {
4776 scsi_add_device(host, i, j, 0);
4777 }
4778
4779 if (sdev1)
4780 scsi_device_put(sdev1);
4781 }
4782 }
4783 }
4784 }
4785 doscan = 0;
4786 break;
4787
7e8a75f4 4788 case MR_EVT_PD_REMOVED:
c9786842
YB		 4789 if (megasas_get_pd_list(instance) == 0) {
4790 megasas_get_pd_list(instance);
4791 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
4792 for (j = 0;
4793 j < MEGASAS_MAX_DEV_PER_CHANNEL;
4794 j++) {
4795
4796 pd_index =
4797 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
4798
4799 sdev1 =
4800 scsi_device_lookup(host, i, j, 0);
4801
4802 if (instance->pd_list[pd_index].driveState
4803 == MR_PD_STATE_SYSTEM) {
4804 if (sdev1) {
4805 scsi_device_put(sdev1);
4806 }
4807 } else {
4808 if (sdev1) {
4809 scsi_remove_device(sdev1);
4810 scsi_device_put(sdev1);
4811 }
4812 }
4813 }
4814 }
4815 }
4816 doscan = 0;
4817 break;
4818
4819 case MR_EVT_LD_OFFLINE:
4820 case MR_EVT_LD_DELETED:
4821 megasas_get_ld_list(instance);
4822 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
4823 for (j = 0;
4824 j < MEGASAS_MAX_DEV_PER_CHANNEL;
4825 j++) {
4826
4827 ld_index =
4828 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
4829
4830 sdev1 = scsi_device_lookup(host,
4831 i + MEGASAS_MAX_LD_CHANNELS,
4832 j,
4833 0);
4834
4835 if (instance->ld_ids[ld_index] != 0xff) {
4836 if (sdev1) {
4837 scsi_device_put(sdev1);
4838 }
4839 } else {
4840 if (sdev1) {
4841 scsi_remove_device(sdev1);
4842 scsi_device_put(sdev1);
4843 }
4844 }
4845 }
4846 }
4847 doscan = 0;
4848 break;
4849 case MR_EVT_LD_CREATED:
4850 megasas_get_ld_list(instance);
4851 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
4852 for (j = 0;
4853 j < MEGASAS_MAX_DEV_PER_CHANNEL;
4854 j++) {
4855 ld_index =
4856 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
4857
4858 sdev1 = scsi_device_lookup(host,
4859 i+MEGASAS_MAX_LD_CHANNELS,
4860 j, 0);
4861
4862 if (instance->ld_ids[ld_index] !=
4863 0xff) {
4864 if (!sdev1) {
4865 scsi_add_device(host,
4866 i + 2,
4867 j, 0);
4868 }
4869 }
4870 if (sdev1) {
4871 scsi_device_put(sdev1);
4872 }
4873 }
4874 }
4875 doscan = 0;
4876 break;
7e8a75f4 4877 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
c9786842 4878 case MR_EVT_FOREIGN_CFG_IMPORTED:
7e8a75f4
YB		 4879 doscan = 1;
4880 break;
4881 default:
4882 doscan = 0;
4883 break;
4884 }
4885 } else {
4886 printk(KERN_ERR "invalid evt_detail!\n");
4887 kfree(ev);
4888 return;
4889 }
4890
4891 if (doscan) {
4892 printk(KERN_INFO "scanning ...\n");
4893 megasas_get_pd_list(instance);
4894 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
4895 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
4896 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j;
4897 sdev1 = scsi_device_lookup(host, i, j, 0);
4898 if (instance->pd_list[pd_index].driveState ==
4899 MR_PD_STATE_SYSTEM) {
4900 if (!sdev1) {
4901 scsi_add_device(host, i, j, 0);
4902 }
4903 if (sdev1)
4904 scsi_device_put(sdev1);
4905 } else {
4906 if (sdev1) {
4907 scsi_remove_device(sdev1);
4908 scsi_device_put(sdev1);
4909 }
4910 }
4911 }
4912 }
c9786842
YB		 4913
4914 megasas_get_ld_list(instance);
4915 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
4916 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
4917 ld_index =
4918 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
4919
4920 sdev1 = scsi_device_lookup(host,
4921 i+MEGASAS_MAX_LD_CHANNELS, j, 0);
4922 if (instance->ld_ids[ld_index] != 0xff) {
4923 if (!sdev1) {
4924 scsi_add_device(host,
4925 i+2,
4926 j, 0);
4927 } else {
4928 scsi_device_put(sdev1);
4929 }
4930 } else {
4931 if (sdev1) {
4932 scsi_remove_device(sdev1);
4933 scsi_device_put(sdev1);
4934 }
4935 }
4936 }
4937 }
7e8a75f4
YB		 4938 }
4939
4940 if ( instance->aen_cmd != NULL ) {
4941 kfree(ev);
4942 return ;
4943 }
4944
4945 seq_num = instance->evt_detail->seq_num + 1;
4946
4947 /* Register AEN with FW for latest sequence number plus 1 */
4948 class_locale.members.reserved = 0;
4949 class_locale.members.locale = MR_EVT_LOCALE_ALL;
4950 class_locale.members.class = MR_EVT_CLASS_DEBUG;
4951 mutex_lock(&instance->aen_mutex);
4952 error = megasas_register_aen(instance, seq_num,
4953 class_locale.word);
4954 mutex_unlock(&instance->aen_mutex);
4955
4956 if (error)
4957 printk(KERN_ERR "register aen failed error %x\n", error);
4958
4959 kfree(ev);
4960}
4961
4962
bb7d3f24 4963static DRIVER_ATTR(poll_mode_io, S_IRUGO|S_IWUSR,
ad84db2e 4964 megasas_sysfs_show_poll_mode_io,
4965 megasas_sysfs_set_poll_mode_io);
658dcedb 4966
c4a3e0a5
BS		 4967/**
4968 * megasas_init - Driver load entry point
4969 */
4970static int __init megasas_init(void)
4971{
4972 int rval;
4973
4974 /*
4975 * Announce driver version and other information
4976 */
4977 printk(KERN_INFO "megasas: %s %s\n", MEGASAS_VERSION,
4978 MEGASAS_EXT_VERSION);
4979
72c4fd36
YB		 4980 support_poll_for_event = 2;
4981
c4a3e0a5
BS		 4982 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
4983
4984 /*
4985 * Register character device node
4986 */
4987 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
4988
4989 if (rval < 0) {
4990 printk(KERN_DEBUG "megasas: failed to open device node\n");
4991 return rval;
4992 }
4993
4994 megasas_mgmt_majorno = rval;
4995
4996 /*
4997 * Register ourselves as PCI hotplug module
4998 */
4041b9cd 4999 rval = pci_register_driver(&megasas_pci_driver);
c4a3e0a5
BS		 5000
5001 if (rval) {
5002 printk(KERN_DEBUG "megasas: PCI hotplug regisration failed \n");
83aabc1b
JG		 5003 goto err_pcidrv;
5004 }
5005
5006 rval = driver_create_file(&megasas_pci_driver.driver,
5007 &driver_attr_version);
5008 if (rval)
5009 goto err_dcf_attr_ver;
5010 rval = driver_create_file(&megasas_pci_driver.driver,
5011 &driver_attr_release_date);
5012 if (rval)
5013 goto err_dcf_rel_date;
72c4fd36
YB		 5014
5015 rval = driver_create_file(&megasas_pci_driver.driver,
5016 &driver_attr_support_poll_for_event);
5017 if (rval)
5018 goto err_dcf_support_poll_for_event;
5019
83aabc1b
JG		 5020 rval = driver_create_file(&megasas_pci_driver.driver,
5021 &driver_attr_dbg_lvl);
5022 if (rval)
5023 goto err_dcf_dbg_lvl;
ad84db2e 5024 rval = driver_create_file(&megasas_pci_driver.driver,
5025 &driver_attr_poll_mode_io);
5026 if (rval)
5027 goto err_dcf_poll_mode_io;
c4a3e0a5
BS		 5028
5029 return rval;
ad84db2e 5030
5031err_dcf_poll_mode_io:
5032 driver_remove_file(&megasas_pci_driver.driver,
5033 &driver_attr_dbg_lvl);
83aabc1b 5034err_dcf_dbg_lvl:
72c4fd36
YB		 5035 driver_remove_file(&megasas_pci_driver.driver,
5036 &driver_attr_support_poll_for_event);
5037
5038err_dcf_support_poll_for_event:
83aabc1b
JG		 5039 driver_remove_file(&megasas_pci_driver.driver,
5040 &driver_attr_release_date);
72c4fd36 5041
83aabc1b
JG		 5042err_dcf_rel_date:
5043 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
5044err_dcf_attr_ver:
5045 pci_unregister_driver(&megasas_pci_driver);
5046err_pcidrv:
5047 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
5048 return rval;
c4a3e0a5
BS		 5049}
5050
5051/**
5052 * megasas_exit - Driver unload entry point
5053 */
5054static void __exit megasas_exit(void)
5055{
ad84db2e 5056 driver_remove_file(&megasas_pci_driver.driver,
5057 &driver_attr_poll_mode_io);
658dcedb
SP		 5058 driver_remove_file(&megasas_pci_driver.driver,
5059 &driver_attr_dbg_lvl);
83aabc1b
JG		 5060 driver_remove_file(&megasas_pci_driver.driver,
5061 &driver_attr_release_date);
5062 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
c4a3e0a5
BS		 5063
5064 pci_unregister_driver(&megasas_pci_driver);
5065 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
5066}
5067
5068module_init(megasas_init);
5069module_exit(megasas_exit);
Linux kernel - Deliverables
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