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[SCSI] megaraid_sas: Fix fault state handling
[mirror_ubuntu-artful-kernel.git] / drivers / scsi / megaraid / megaraid_sas_base.c
CommitLineData
c4a3e0a5 1/*
3f1530c1 2 * Linux MegaRAID driver for SAS based RAID controllers
c4a3e0a5 3 *
3f1530c1 4 * Copyright (c) 2009-2011 LSI Corporation.
c4a3e0a5 5 *
3f1530c1
AR		 6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
c4a3e0a5 10 *
3f1530c1
AR		 11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
c4a3e0a5 15 *
3f1530c1
AR		 16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
c4a3e0a5 19 *
3f1530c1
AR		 20 * FILE: megaraid_sas_base.c
21 * Version : v00.00.05.29-rc1
c4a3e0a5 22 *
3f1530c1
AR		 23 * Authors: LSI Corporation
24 * Sreenivas Bagalkote
25 * Sumant Patro
26 * Bo Yang
c4a3e0a5 27 *
3f1530c1
AR		 28 * Send feedback to: <megaraidlinux@lsi.com>
29 *
30 * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035
31 * ATTN: Linuxraid
c4a3e0a5
BS		 32 */
33
34#include <linux/kernel.h>
35#include <linux/types.h>
36#include <linux/pci.h>
37#include <linux/list.h>
c4a3e0a5
BS		 38#include <linux/moduleparam.h>
39#include <linux/module.h>
40#include <linux/spinlock.h>
41#include <linux/interrupt.h>
42#include <linux/delay.h>
43#include <linux/uio.h>
5a0e3ad6 44#include <linux/slab.h>
c4a3e0a5 45#include <asm/uaccess.h>
43399236 46#include <linux/fs.h>
c4a3e0a5 47#include <linux/compat.h>
cf62a0a5 48#include <linux/blkdev.h>
0b950672 49#include <linux/mutex.h>
c3518837 50#include <linux/poll.h>
c4a3e0a5
BS		 51
52#include <scsi/scsi.h>
53#include <scsi/scsi_cmnd.h>
54#include <scsi/scsi_device.h>
55#include <scsi/scsi_host.h>
9c915a8c 56#include "megaraid_sas_fusion.h"
c4a3e0a5
BS		 57#include "megaraid_sas.h"
58
ad84db2e 59/*
60 * poll_mode_io:1- schedule complete completion from q cmd
61 */
62static unsigned int poll_mode_io;
63module_param_named(poll_mode_io, poll_mode_io, int, 0);
64MODULE_PARM_DESC(poll_mode_io,
65 "Complete cmds from IO path, (default=0)");
66
1fd10685
YB		 67/*
68 * Number of sectors per IO command
69 * Will be set in megasas_init_mfi if user does not provide
70 */
71static unsigned int max_sectors;
72module_param_named(max_sectors, max_sectors, int, 0);
73MODULE_PARM_DESC(max_sectors,
74 "Maximum number of sectors per IO command");
75
80d9da98
AR		 76static int msix_disable;
77module_param(msix_disable, int, S_IRUGO);
78MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0");
79
c4a3e0a5
BS		 80MODULE_LICENSE("GPL");
81MODULE_VERSION(MEGASAS_VERSION);
3d6d174a 82MODULE_AUTHOR("megaraidlinux@lsi.com");
f28cd7cf 83MODULE_DESCRIPTION("LSI MegaRAID SAS Driver");
c4a3e0a5 84
9c915a8c 85int megasas_transition_to_ready(struct megasas_instance *instance);
39a98554 86static int megasas_get_pd_list(struct megasas_instance *instance);
87static int megasas_issue_init_mfi(struct megasas_instance *instance);
88static int megasas_register_aen(struct megasas_instance *instance,
89 u32 seq_num, u32 class_locale_word);
c4a3e0a5
BS		 90/*
91 * PCI ID table for all supported controllers
92 */
93static struct pci_device_id megasas_pci_table[] = {
94
f3d7271c
HK		 95 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
96 /* xscale IOP */
97 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
98 /* ppc IOP */
af7a5647 99 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
100 /* ppc IOP */
6610a6b3
YB		 101 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
102 /* gen2*/
103 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
104 /* gen2*/
87911122
YB		 105 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
106 /* skinny*/
107 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
108 /* skinny*/
f3d7271c
HK		 109 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
110 /* xscale IOP, vega */
111 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
112 /* xscale IOP */
9c915a8c
AR		 113 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
114 /* Fusion */
f3d7271c 115 {}
c4a3e0a5
BS		 116};
117
118MODULE_DEVICE_TABLE(pci, megasas_pci_table);
119
120static int megasas_mgmt_majorno;
121static struct megasas_mgmt_info megasas_mgmt_info;
122static struct fasync_struct *megasas_async_queue;
0b950672 123static DEFINE_MUTEX(megasas_async_queue_mutex);
c4a3e0a5 124
c3518837
YB		 125static int megasas_poll_wait_aen;
126static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
72c4fd36 127static u32 support_poll_for_event;
9c915a8c 128u32 megasas_dbg_lvl;
837f5fe8 129static u32 support_device_change;
658dcedb 130
c3518837
YB		 131/* define lock for aen poll */
132spinlock_t poll_aen_lock;
133
9c915a8c 134void
7343eb65 135megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
136 u8 alt_status);
9c915a8c 137
cd50ba8e
AR		 138static irqreturn_t megasas_isr(int irq, void *devp);
139static u32
140megasas_init_adapter_mfi(struct megasas_instance *instance);
141u32
142megasas_build_and_issue_cmd(struct megasas_instance *instance,
143 struct scsi_cmnd *scmd);
144static void megasas_complete_cmd_dpc(unsigned long instance_addr);
9c915a8c
AR		 145void
146megasas_release_fusion(struct megasas_instance *instance);
147int
148megasas_ioc_init_fusion(struct megasas_instance *instance);
149void
150megasas_free_cmds_fusion(struct megasas_instance *instance);
151u8
152megasas_get_map_info(struct megasas_instance *instance);
153int
154megasas_sync_map_info(struct megasas_instance *instance);
155int
156wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd);
157void megasas_reset_reply_desc(struct megasas_instance *instance);
158u8 MR_ValidateMapInfo(struct MR_FW_RAID_MAP_ALL *map,
159 struct LD_LOAD_BALANCE_INFO *lbInfo);
160int megasas_reset_fusion(struct Scsi_Host *shost);
161void megasas_fusion_ocr_wq(struct work_struct *work);
cd50ba8e
AR		 162
163void
164megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
165{
166 instance->instancet->fire_cmd(instance,
167 cmd->frame_phys_addr, 0, instance->reg_set);
168}
7343eb65 169
c4a3e0a5
BS		 170/**
171 * megasas_get_cmd - Get a command from the free pool
172 * @instance: Adapter soft state
173 *
174 * Returns a free command from the pool
175 */
9c915a8c 176struct megasas_cmd *megasas_get_cmd(struct megasas_instance
c4a3e0a5
BS		 177 *instance)
178{
179 unsigned long flags;
180 struct megasas_cmd *cmd = NULL;
181
182 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
183
184 if (!list_empty(&instance->cmd_pool)) {
185 cmd = list_entry((&instance->cmd_pool)->next,
186 struct megasas_cmd, list);
187 list_del_init(&cmd->list);
188 } else {
189 printk(KERN_ERR "megasas: Command pool empty!\n");
190 }
191
192 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
193 return cmd;
194}
195
196/**
197 * megasas_return_cmd - Return a cmd to free command pool
198 * @instance: Adapter soft state
199 * @cmd: Command packet to be returned to free command pool
200 */
9c915a8c 201inline void
c4a3e0a5
BS		 202megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
203{
204 unsigned long flags;
205
206 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
207
208 cmd->scmd = NULL;
9c915a8c 209 cmd->frame_count = 0;
c4a3e0a5
BS		 210 list_add_tail(&cmd->list, &instance->cmd_pool);
211
212 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
213}
214
1341c939
SP		 215
216/**
0d49016b 217* The following functions are defined for xscale
1341c939
SP		 218* (deviceid : 1064R, PERC5) controllers
219*/
220
c4a3e0a5 221/**
1341c939 222 * megasas_enable_intr_xscale - Enables interrupts
c4a3e0a5
BS		 223 * @regs: MFI register set
224 */
225static inline void
1341c939 226megasas_enable_intr_xscale(struct megasas_register_set __iomem * regs)
c4a3e0a5 227{
39a98554 228 writel(0, &(regs)->outbound_intr_mask);
c4a3e0a5
BS		 229
230 /* Dummy readl to force pci flush */
231 readl(&regs->outbound_intr_mask);
232}
233
b274cab7
SP		 234/**
235 * megasas_disable_intr_xscale -Disables interrupt
236 * @regs: MFI register set
237 */
238static inline void
239megasas_disable_intr_xscale(struct megasas_register_set __iomem * regs)
240{
241 u32 mask = 0x1f;
242 writel(mask, &regs->outbound_intr_mask);
243 /* Dummy readl to force pci flush */
244 readl(&regs->outbound_intr_mask);
245}
246
1341c939
SP		 247/**
248 * megasas_read_fw_status_reg_xscale - returns the current FW status value
249 * @regs: MFI register set
250 */
251static u32
252megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs)
253{
254 return readl(&(regs)->outbound_msg_0);
255}
256/**
257 * megasas_clear_interrupt_xscale - Check & clear interrupt
258 * @regs: MFI register set
259 */
0d49016b 260static int
1341c939
SP		 261megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs)
262{
263 u32 status;
39a98554 264 u32 mfiStatus = 0;
1341c939
SP		 265 /*
266 * Check if it is our interrupt
267 */
268 status = readl(&regs->outbound_intr_status);
269
39a98554 270 if (status & MFI_OB_INTR_STATUS_MASK)
271 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
272 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
273 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
1341c939
SP		 274
275 /*
276 * Clear the interrupt by writing back the same value
277 */
39a98554 278 if (mfiStatus)
279 writel(status, &regs->outbound_intr_status);
1341c939 280
06f579de
YB		 281 /* Dummy readl to force pci flush */
282 readl(&regs->outbound_intr_status);
283
39a98554 284 return mfiStatus;
1341c939
SP		 285}
286
287/**
288 * megasas_fire_cmd_xscale - Sends command to the FW
289 * @frame_phys_addr : Physical address of cmd
290 * @frame_count : Number of frames for the command
291 * @regs : MFI register set
292 */
0d49016b 293static inline void
0c79e681
YB		 294megasas_fire_cmd_xscale(struct megasas_instance *instance,
295 dma_addr_t frame_phys_addr,
296 u32 frame_count,
297 struct megasas_register_set __iomem *regs)
1341c939 298{
39a98554 299 unsigned long flags;
300 spin_lock_irqsave(&instance->hba_lock, flags);
1341c939
SP		 301 writel((frame_phys_addr >> 3)|(frame_count),
302 &(regs)->inbound_queue_port);
39a98554 303 spin_unlock_irqrestore(&instance->hba_lock, flags);
304}
305
306/**
307 * megasas_adp_reset_xscale - For controller reset
308 * @regs: MFI register set
309 */
310static int
311megasas_adp_reset_xscale(struct megasas_instance *instance,
312 struct megasas_register_set __iomem *regs)
313{
314 u32 i;
315 u32 pcidata;
316 writel(MFI_ADP_RESET, &regs->inbound_doorbell);
317
318 for (i = 0; i < 3; i++)
319 msleep(1000); /* sleep for 3 secs */
320 pcidata = 0;
321 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
322 printk(KERN_NOTICE "pcidata = %x\n", pcidata);
323 if (pcidata & 0x2) {
324 printk(KERN_NOTICE "mfi 1068 offset read=%x\n", pcidata);
325 pcidata &= ~0x2;
326 pci_write_config_dword(instance->pdev,
327 MFI_1068_PCSR_OFFSET, pcidata);
328
329 for (i = 0; i < 2; i++)
330 msleep(1000); /* need to wait 2 secs again */
331
332 pcidata = 0;
333 pci_read_config_dword(instance->pdev,
334 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
335 printk(KERN_NOTICE "1068 offset handshake read=%x\n", pcidata);
336 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
337 printk(KERN_NOTICE "1068 offset pcidt=%x\n", pcidata);
338 pcidata = 0;
339 pci_write_config_dword(instance->pdev,
340 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
341 }
342 }
343 return 0;
344}
345
346/**
347 * megasas_check_reset_xscale - For controller reset check
348 * @regs: MFI register set
349 */
350static int
351megasas_check_reset_xscale(struct megasas_instance *instance,
352 struct megasas_register_set __iomem *regs)
353{
354 u32 consumer;
355 consumer = *instance->consumer;
356
357 if ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) &&
358 (*instance->consumer == MEGASAS_ADPRESET_INPROG_SIGN)) {
359 return 1;
360 }
361 return 0;
1341c939
SP		 362}
363
364static struct megasas_instance_template megasas_instance_template_xscale = {
365
366 .fire_cmd = megasas_fire_cmd_xscale,
367 .enable_intr = megasas_enable_intr_xscale,
b274cab7 368 .disable_intr = megasas_disable_intr_xscale,
1341c939
SP		 369 .clear_intr = megasas_clear_intr_xscale,
370 .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
39a98554 371 .adp_reset = megasas_adp_reset_xscale,
372 .check_reset = megasas_check_reset_xscale,
cd50ba8e
AR		 373 .service_isr = megasas_isr,
374 .tasklet = megasas_complete_cmd_dpc,
375 .init_adapter = megasas_init_adapter_mfi,
376 .build_and_issue_cmd = megasas_build_and_issue_cmd,
377 .issue_dcmd = megasas_issue_dcmd,
1341c939
SP		 378};
379
380/**
0d49016b 381* This is the end of set of functions & definitions specific
1341c939
SP		 382* to xscale (deviceid : 1064R, PERC5) controllers
383*/
384
f9876f0b 385/**
0d49016b 386* The following functions are defined for ppc (deviceid : 0x60)
f9876f0b
SP		 387* controllers
388*/
389
390/**
391 * megasas_enable_intr_ppc - Enables interrupts
392 * @regs: MFI register set
393 */
394static inline void
395megasas_enable_intr_ppc(struct megasas_register_set __iomem * regs)
396{
397 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
0d49016b 398
39a98554 399 writel(~0x80000000, &(regs)->outbound_intr_mask);
f9876f0b
SP		 400
401 /* Dummy readl to force pci flush */
402 readl(&regs->outbound_intr_mask);
403}
404
b274cab7
SP		 405/**
406 * megasas_disable_intr_ppc - Disable interrupt
407 * @regs: MFI register set
408 */
409static inline void
410megasas_disable_intr_ppc(struct megasas_register_set __iomem * regs)
411{
412 u32 mask = 0xFFFFFFFF;
413 writel(mask, &regs->outbound_intr_mask);
414 /* Dummy readl to force pci flush */
415 readl(&regs->outbound_intr_mask);
416}
417
f9876f0b
SP		 418/**
419 * megasas_read_fw_status_reg_ppc - returns the current FW status value
420 * @regs: MFI register set
421 */
422static u32
423megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs)
424{
425 return readl(&(regs)->outbound_scratch_pad);
426}
427
428/**
429 * megasas_clear_interrupt_ppc - Check & clear interrupt
430 * @regs: MFI register set
431 */
0d49016b 432static int
f9876f0b
SP		 433megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs)
434{
435 u32 status;
436 /*
437 * Check if it is our interrupt
438 */
439 status = readl(&regs->outbound_intr_status);
440
441 if (!(status & MFI_REPLY_1078_MESSAGE_INTERRUPT)) {
39a98554 442 return 0;
f9876f0b
SP		 443 }
444
445 /*
446 * Clear the interrupt by writing back the same value
447 */
448 writel(status, &regs->outbound_doorbell_clear);
449
06f579de
YB		 450 /* Dummy readl to force pci flush */
451 readl(&regs->outbound_doorbell_clear);
452
39a98554 453 return 1;
f9876f0b
SP		 454}
455/**
456 * megasas_fire_cmd_ppc - Sends command to the FW
457 * @frame_phys_addr : Physical address of cmd
458 * @frame_count : Number of frames for the command
459 * @regs : MFI register set
460 */
0d49016b 461static inline void
0c79e681
YB		 462megasas_fire_cmd_ppc(struct megasas_instance *instance,
463 dma_addr_t frame_phys_addr,
464 u32 frame_count,
465 struct megasas_register_set __iomem *regs)
f9876f0b 466{
39a98554 467 unsigned long flags;
468 spin_lock_irqsave(&instance->hba_lock, flags);
0d49016b 469 writel((frame_phys_addr | (frame_count<<1))|1,
f9876f0b 470 &(regs)->inbound_queue_port);
39a98554 471 spin_unlock_irqrestore(&instance->hba_lock, flags);
f9876f0b
SP		 472}
473
39a98554 474/**
475 * megasas_adp_reset_ppc - For controller reset
476 * @regs: MFI register set
477 */
478static int
479megasas_adp_reset_ppc(struct megasas_instance *instance,
480 struct megasas_register_set __iomem *regs)
481{
482 return 0;
483}
484
485/**
486 * megasas_check_reset_ppc - For controller reset check
487 * @regs: MFI register set
488 */
489static int
490megasas_check_reset_ppc(struct megasas_instance *instance,
491 struct megasas_register_set __iomem *regs)
492{
493 return 0;
494}
f9876f0b 495static struct megasas_instance_template megasas_instance_template_ppc = {
0d49016b 496
f9876f0b
SP		 497 .fire_cmd = megasas_fire_cmd_ppc,
498 .enable_intr = megasas_enable_intr_ppc,
b274cab7 499 .disable_intr = megasas_disable_intr_ppc,
f9876f0b
SP		 500 .clear_intr = megasas_clear_intr_ppc,
501 .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
39a98554 502 .adp_reset = megasas_adp_reset_ppc,
503 .check_reset = megasas_check_reset_ppc,
cd50ba8e
AR		 504 .service_isr = megasas_isr,
505 .tasklet = megasas_complete_cmd_dpc,
506 .init_adapter = megasas_init_adapter_mfi,
507 .build_and_issue_cmd = megasas_build_and_issue_cmd,
508 .issue_dcmd = megasas_issue_dcmd,
f9876f0b
SP		 509};
510
87911122
YB		 511/**
512 * megasas_enable_intr_skinny - Enables interrupts
513 * @regs: MFI register set
514 */
515static inline void
516megasas_enable_intr_skinny(struct megasas_register_set __iomem *regs)
517{
518 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
519
520 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
521
522 /* Dummy readl to force pci flush */
523 readl(&regs->outbound_intr_mask);
524}
525
526/**
527 * megasas_disable_intr_skinny - Disables interrupt
528 * @regs: MFI register set
529 */
530static inline void
531megasas_disable_intr_skinny(struct megasas_register_set __iomem *regs)
532{
533 u32 mask = 0xFFFFFFFF;
534 writel(mask, &regs->outbound_intr_mask);
535 /* Dummy readl to force pci flush */
536 readl(&regs->outbound_intr_mask);
537}
538
539/**
540 * megasas_read_fw_status_reg_skinny - returns the current FW status value
541 * @regs: MFI register set
542 */
543static u32
544megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs)
545{
546 return readl(&(regs)->outbound_scratch_pad);
547}
548
549/**
550 * megasas_clear_interrupt_skinny - Check & clear interrupt
551 * @regs: MFI register set
552 */
553static int
554megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs)
555{
556 u32 status;
557 /*
558 * Check if it is our interrupt
559 */
560 status = readl(&regs->outbound_intr_status);
561
562 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
39a98554 563 return 0;
87911122
YB		 564 }
565
566 /*
567 * Clear the interrupt by writing back the same value
568 */
569 writel(status, &regs->outbound_intr_status);
570
571 /*
572 * dummy read to flush PCI
573 */
574 readl(&regs->outbound_intr_status);
575
39a98554 576 return 1;
87911122
YB		 577}
578
579/**
580 * megasas_fire_cmd_skinny - Sends command to the FW
581 * @frame_phys_addr : Physical address of cmd
582 * @frame_count : Number of frames for the command
583 * @regs : MFI register set
584 */
585static inline void
0c79e681
YB		 586megasas_fire_cmd_skinny(struct megasas_instance *instance,
587 dma_addr_t frame_phys_addr,
588 u32 frame_count,
87911122
YB		 589 struct megasas_register_set __iomem *regs)
590{
0c79e681 591 unsigned long flags;
39a98554 592 spin_lock_irqsave(&instance->hba_lock, flags);
87911122
YB		 593 writel(0, &(regs)->inbound_high_queue_port);
594 writel((frame_phys_addr | (frame_count<<1))|1,
595 &(regs)->inbound_low_queue_port);
39a98554 596 spin_unlock_irqrestore(&instance->hba_lock, flags);
597}
598
599/**
600 * megasas_adp_reset_skinny - For controller reset
601 * @regs: MFI register set
602 */
603static int
604megasas_adp_reset_skinny(struct megasas_instance *instance,
605 struct megasas_register_set __iomem *regs)
606{
607 return 0;
608}
609
610/**
611 * megasas_check_reset_skinny - For controller reset check
612 * @regs: MFI register set
613 */
614static int
615megasas_check_reset_skinny(struct megasas_instance *instance,
616 struct megasas_register_set __iomem *regs)
617{
618 return 0;
87911122
YB		 619}
620
621static struct megasas_instance_template megasas_instance_template_skinny = {
622
623 .fire_cmd = megasas_fire_cmd_skinny,
624 .enable_intr = megasas_enable_intr_skinny,
625 .disable_intr = megasas_disable_intr_skinny,
626 .clear_intr = megasas_clear_intr_skinny,
627 .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
39a98554 628 .adp_reset = megasas_adp_reset_skinny,
629 .check_reset = megasas_check_reset_skinny,
cd50ba8e
AR		 630 .service_isr = megasas_isr,
631 .tasklet = megasas_complete_cmd_dpc,
632 .init_adapter = megasas_init_adapter_mfi,
633 .build_and_issue_cmd = megasas_build_and_issue_cmd,
634 .issue_dcmd = megasas_issue_dcmd,
87911122
YB		 635};
636
637
6610a6b3
YB		 638/**
639* The following functions are defined for gen2 (deviceid : 0x78 0x79)
640* controllers
641*/
642
643/**
644 * megasas_enable_intr_gen2 - Enables interrupts
645 * @regs: MFI register set
646 */
647static inline void
648megasas_enable_intr_gen2(struct megasas_register_set __iomem *regs)
649{
650 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
651
652 /* write ~0x00000005 (4 & 1) to the intr mask*/
653 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
654
655 /* Dummy readl to force pci flush */
656 readl(&regs->outbound_intr_mask);
657}
658
659/**
660 * megasas_disable_intr_gen2 - Disables interrupt
661 * @regs: MFI register set
662 */
663static inline void
664megasas_disable_intr_gen2(struct megasas_register_set __iomem *regs)
665{
666 u32 mask = 0xFFFFFFFF;
667 writel(mask, &regs->outbound_intr_mask);
668 /* Dummy readl to force pci flush */
669 readl(&regs->outbound_intr_mask);
670}
671
672/**
673 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
674 * @regs: MFI register set
675 */
676static u32
677megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs)
678{
679 return readl(&(regs)->outbound_scratch_pad);
680}
681
682/**
683 * megasas_clear_interrupt_gen2 - Check & clear interrupt
684 * @regs: MFI register set
685 */
686static int
687megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs)
688{
689 u32 status;
39a98554 690 u32 mfiStatus = 0;
6610a6b3
YB		 691 /*
692 * Check if it is our interrupt
693 */
694 status = readl(&regs->outbound_intr_status);
695
39a98554 696 if (status & MFI_GEN2_ENABLE_INTERRUPT_MASK) {
697 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
698 }
699 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
700 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
701 }
6610a6b3
YB		 702
703 /*
704 * Clear the interrupt by writing back the same value
705 */
39a98554 706 if (mfiStatus)
707 writel(status, &regs->outbound_doorbell_clear);
6610a6b3
YB		 708
709 /* Dummy readl to force pci flush */
710 readl(&regs->outbound_intr_status);
711
39a98554 712 return mfiStatus;
6610a6b3
YB		 713}
714/**
715 * megasas_fire_cmd_gen2 - Sends command to the FW
716 * @frame_phys_addr : Physical address of cmd
717 * @frame_count : Number of frames for the command
718 * @regs : MFI register set
719 */
720static inline void
0c79e681
YB		 721megasas_fire_cmd_gen2(struct megasas_instance *instance,
722 dma_addr_t frame_phys_addr,
723 u32 frame_count,
6610a6b3
YB		 724 struct megasas_register_set __iomem *regs)
725{
39a98554 726 unsigned long flags;
727 spin_lock_irqsave(&instance->hba_lock, flags);
6610a6b3
YB		 728 writel((frame_phys_addr | (frame_count<<1))|1,
729 &(regs)->inbound_queue_port);
39a98554 730 spin_unlock_irqrestore(&instance->hba_lock, flags);
731}
732
733/**
734 * megasas_adp_reset_gen2 - For controller reset
735 * @regs: MFI register set
736 */
737static int
738megasas_adp_reset_gen2(struct megasas_instance *instance,
739 struct megasas_register_set __iomem *reg_set)
740{
741 u32 retry = 0 ;
742 u32 HostDiag;
743
744 writel(0, &reg_set->seq_offset);
745 writel(4, &reg_set->seq_offset);
746 writel(0xb, &reg_set->seq_offset);
747 writel(2, &reg_set->seq_offset);
748 writel(7, &reg_set->seq_offset);
749 writel(0xd, &reg_set->seq_offset);
750 msleep(1000);
751
752 HostDiag = (u32)readl(&reg_set->host_diag);
753
754 while ( !( HostDiag & DIAG_WRITE_ENABLE) ) {
755 msleep(100);
756 HostDiag = (u32)readl(&reg_set->host_diag);
757 printk(KERN_NOTICE "RESETGEN2: retry=%x, hostdiag=%x\n",
758 retry, HostDiag);
759
760 if (retry++ >= 100)
761 return 1;
762
763 }
764
765 printk(KERN_NOTICE "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
766
767 writel((HostDiag | DIAG_RESET_ADAPTER), &reg_set->host_diag);
768
769 ssleep(10);
770
771 HostDiag = (u32)readl(&reg_set->host_diag);
772 while ( ( HostDiag & DIAG_RESET_ADAPTER) ) {
773 msleep(100);
774 HostDiag = (u32)readl(&reg_set->host_diag);
775 printk(KERN_NOTICE "RESET_GEN2: retry=%x, hostdiag=%x\n",
776 retry, HostDiag);
777
778 if (retry++ >= 1000)
779 return 1;
780
781 }
782 return 0;
783}
784
785/**
786 * megasas_check_reset_gen2 - For controller reset check
787 * @regs: MFI register set
788 */
789static int
790megasas_check_reset_gen2(struct megasas_instance *instance,
791 struct megasas_register_set __iomem *regs)
792{
707e09bd
YB		 793 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
794 return 1;
795 }
796
39a98554 797 return 0;
6610a6b3
YB		 798}
799
800static struct megasas_instance_template megasas_instance_template_gen2 = {
801
802 .fire_cmd = megasas_fire_cmd_gen2,
803 .enable_intr = megasas_enable_intr_gen2,
804 .disable_intr = megasas_disable_intr_gen2,
805 .clear_intr = megasas_clear_intr_gen2,
806 .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
39a98554 807 .adp_reset = megasas_adp_reset_gen2,
808 .check_reset = megasas_check_reset_gen2,
cd50ba8e
AR		 809 .service_isr = megasas_isr,
810 .tasklet = megasas_complete_cmd_dpc,
811 .init_adapter = megasas_init_adapter_mfi,
812 .build_and_issue_cmd = megasas_build_and_issue_cmd,
813 .issue_dcmd = megasas_issue_dcmd,
6610a6b3
YB		 814};
815
f9876f0b
SP		 816/**
817* This is the end of set of functions & definitions
39a98554 818* specific to gen2 (deviceid : 0x78, 0x79) controllers
f9876f0b
SP		 819*/
820
9c915a8c
AR		 821/*
822 * Template added for TB (Fusion)
823 */
824extern struct megasas_instance_template megasas_instance_template_fusion;
825
c4a3e0a5
BS		 826/**
827 * megasas_issue_polled - Issues a polling command
828 * @instance: Adapter soft state
0d49016b 829 * @cmd: Command packet to be issued
c4a3e0a5
BS		 830 *
831 * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
832 */
9c915a8c 833int
c4a3e0a5
BS		 834megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
835{
c4a3e0a5
BS		 836
837 struct megasas_header *frame_hdr = &cmd->frame->hdr;
838
839 frame_hdr->cmd_status = 0xFF;
840 frame_hdr->flags |= MFI_FRAME_DONT_POST_IN_REPLY_QUEUE;
841
842 /*
843 * Issue the frame using inbound queue port
844 */
9c915a8c 845 instance->instancet->issue_dcmd(instance, cmd);
c4a3e0a5
BS		 846
847 /*
848 * Wait for cmd_status to change
849 */
9c915a8c 850 return wait_and_poll(instance, cmd);
c4a3e0a5
BS		 851}
852
853/**
854 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds
855 * @instance: Adapter soft state
856 * @cmd: Command to be issued
857 *
858 * This function waits on an event for the command to be returned from ISR.
2a3681e5 859 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
c4a3e0a5
BS		 860 * Used to issue ioctl commands.
861 */
862static int
863megasas_issue_blocked_cmd(struct megasas_instance *instance,
864 struct megasas_cmd *cmd)
865{
866 cmd->cmd_status = ENODATA;
867
9c915a8c 868 instance->instancet->issue_dcmd(instance, cmd);
c4a3e0a5 869
39a98554 870 wait_event(instance->int_cmd_wait_q, cmd->cmd_status != ENODATA);
c4a3e0a5
BS		 871
872 return 0;
873}
874
875/**
876 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd
877 * @instance: Adapter soft state
878 * @cmd_to_abort: Previously issued cmd to be aborted
879 *
880 * MFI firmware can abort previously issued AEN comamnd (automatic event
881 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
2a3681e5
SP		 882 * cmd and waits for return status.
883 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
c4a3e0a5
BS		 884 */
885static int
886megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
887 struct megasas_cmd *cmd_to_abort)
888{
889 struct megasas_cmd *cmd;
890 struct megasas_abort_frame *abort_fr;
891
892 cmd = megasas_get_cmd(instance);
893
894 if (!cmd)
895 return -1;
896
897 abort_fr = &cmd->frame->abort;
898
899 /*
900 * Prepare and issue the abort frame
901 */
902 abort_fr->cmd = MFI_CMD_ABORT;
903 abort_fr->cmd_status = 0xFF;
904 abort_fr->flags = 0;
905 abort_fr->abort_context = cmd_to_abort->index;
906 abort_fr->abort_mfi_phys_addr_lo = cmd_to_abort->frame_phys_addr;
907 abort_fr->abort_mfi_phys_addr_hi = 0;
908
909 cmd->sync_cmd = 1;
910 cmd->cmd_status = 0xFF;
911
9c915a8c 912 instance->instancet->issue_dcmd(instance, cmd);
c4a3e0a5
BS		 913
914 /*
915 * Wait for this cmd to complete
916 */
39a98554 917 wait_event(instance->abort_cmd_wait_q, cmd->cmd_status != 0xFF);
918 cmd->sync_cmd = 0;
c4a3e0a5
BS		 919
920 megasas_return_cmd(instance, cmd);
921 return 0;
922}
923
924/**
925 * megasas_make_sgl32 - Prepares 32-bit SGL
926 * @instance: Adapter soft state
927 * @scp: SCSI command from the mid-layer
928 * @mfi_sgl: SGL to be filled in
929 *
930 * If successful, this function returns the number of SG elements. Otherwise,
931 * it returnes -1.
932 */
858119e1 933static int
c4a3e0a5
BS		 934megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
935 union megasas_sgl *mfi_sgl)
936{
937 int i;
938 int sge_count;
939 struct scatterlist *os_sgl;
940
155d98f0
FT		 941 sge_count = scsi_dma_map(scp);
942 BUG_ON(sge_count < 0);
c4a3e0a5 943
155d98f0
FT		 944 if (sge_count) {
945 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
946 mfi_sgl->sge32[i].length = sg_dma_len(os_sgl);
947 mfi_sgl->sge32[i].phys_addr = sg_dma_address(os_sgl);
948 }
c4a3e0a5 949 }
c4a3e0a5
BS		 950 return sge_count;
951}
952
953/**
954 * megasas_make_sgl64 - Prepares 64-bit SGL
955 * @instance: Adapter soft state
956 * @scp: SCSI command from the mid-layer
957 * @mfi_sgl: SGL to be filled in
958 *
959 * If successful, this function returns the number of SG elements. Otherwise,
960 * it returnes -1.
961 */
858119e1 962static int
c4a3e0a5
BS		 963megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
964 union megasas_sgl *mfi_sgl)
965{
966 int i;
967 int sge_count;
968 struct scatterlist *os_sgl;
969
155d98f0
FT		 970 sge_count = scsi_dma_map(scp);
971 BUG_ON(sge_count < 0);
c4a3e0a5 972
155d98f0
FT		 973 if (sge_count) {
974 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
975 mfi_sgl->sge64[i].length = sg_dma_len(os_sgl);
976 mfi_sgl->sge64[i].phys_addr = sg_dma_address(os_sgl);
977 }
c4a3e0a5 978 }
c4a3e0a5
BS		 979 return sge_count;
980}
981
f4c9a131
YB		 982/**
983 * megasas_make_sgl_skinny - Prepares IEEE SGL
984 * @instance: Adapter soft state
985 * @scp: SCSI command from the mid-layer
986 * @mfi_sgl: SGL to be filled in
987 *
988 * If successful, this function returns the number of SG elements. Otherwise,
989 * it returnes -1.
990 */
991static int
992megasas_make_sgl_skinny(struct megasas_instance *instance,
993 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
994{
995 int i;
996 int sge_count;
997 struct scatterlist *os_sgl;
998
999 sge_count = scsi_dma_map(scp);
1000
1001 if (sge_count) {
1002 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1003 mfi_sgl->sge_skinny[i].length = sg_dma_len(os_sgl);
1004 mfi_sgl->sge_skinny[i].phys_addr =
1005 sg_dma_address(os_sgl);
707e09bd 1006 mfi_sgl->sge_skinny[i].flag = 0;
f4c9a131
YB		 1007 }
1008 }
1009 return sge_count;
1010}
1011
b1df99d9
SP		 1012 /**
1013 * megasas_get_frame_count - Computes the number of frames
d532dbe2 1014 * @frame_type : type of frame- io or pthru frame
b1df99d9
SP		 1015 * @sge_count : number of sg elements
1016 *
1017 * Returns the number of frames required for numnber of sge's (sge_count)
1018 */
1019
f4c9a131
YB		 1020static u32 megasas_get_frame_count(struct megasas_instance *instance,
1021 u8 sge_count, u8 frame_type)
b1df99d9
SP		 1022{
1023 int num_cnt;
1024 int sge_bytes;
1025 u32 sge_sz;
1026 u32 frame_count=0;
1027
1028 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1029 sizeof(struct megasas_sge32);
1030
f4c9a131
YB		 1031 if (instance->flag_ieee) {
1032 sge_sz = sizeof(struct megasas_sge_skinny);
1033 }
1034
b1df99d9 1035 /*
d532dbe2 1036 * Main frame can contain 2 SGEs for 64-bit SGLs and
1037 * 3 SGEs for 32-bit SGLs for ldio &
1038 * 1 SGEs for 64-bit SGLs and
1039 * 2 SGEs for 32-bit SGLs for pthru frame
1040 */
1041 if (unlikely(frame_type == PTHRU_FRAME)) {
f4c9a131
YB		 1042 if (instance->flag_ieee == 1) {
1043 num_cnt = sge_count - 1;
1044 } else if (IS_DMA64)
d532dbe2 1045 num_cnt = sge_count - 1;
1046 else
1047 num_cnt = sge_count - 2;
1048 } else {
f4c9a131
YB		 1049 if (instance->flag_ieee == 1) {
1050 num_cnt = sge_count - 1;
1051 } else if (IS_DMA64)
d532dbe2 1052 num_cnt = sge_count - 2;
1053 else
1054 num_cnt = sge_count - 3;
1055 }
b1df99d9
SP		 1056
1057 if(num_cnt>0){
1058 sge_bytes = sge_sz * num_cnt;
1059
1060 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1061 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1062 }
1063 /* Main frame */
1064 frame_count +=1;
1065
1066 if (frame_count > 7)
1067 frame_count = 8;
1068 return frame_count;
1069}
1070
c4a3e0a5
BS		 1071/**
1072 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1073 * @instance: Adapter soft state
1074 * @scp: SCSI command
1075 * @cmd: Command to be prepared in
1076 *
1077 * This function prepares CDB commands. These are typcially pass-through
1078 * commands to the devices.
1079 */
858119e1 1080static int
c4a3e0a5
BS		 1081megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1082 struct megasas_cmd *cmd)
1083{
c4a3e0a5
BS		 1084 u32 is_logical;
1085 u32 device_id;
1086 u16 flags = 0;
1087 struct megasas_pthru_frame *pthru;
1088
1089 is_logical = MEGASAS_IS_LOGICAL(scp);
1090 device_id = MEGASAS_DEV_INDEX(instance, scp);
1091 pthru = (struct megasas_pthru_frame *)cmd->frame;
1092
1093 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1094 flags = MFI_FRAME_DIR_WRITE;
1095 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1096 flags = MFI_FRAME_DIR_READ;
1097 else if (scp->sc_data_direction == PCI_DMA_NONE)
1098 flags = MFI_FRAME_DIR_NONE;
1099
f4c9a131
YB		 1100 if (instance->flag_ieee == 1) {
1101 flags |= MFI_FRAME_IEEE;
1102 }
1103
c4a3e0a5
BS		 1104 /*
1105 * Prepare the DCDB frame
1106 */
1107 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1108 pthru->cmd_status = 0x0;
1109 pthru->scsi_status = 0x0;
1110 pthru->target_id = device_id;
1111 pthru->lun = scp->device->lun;
1112 pthru->cdb_len = scp->cmd_len;
1113 pthru->timeout = 0;
780a3762 1114 pthru->pad_0 = 0;
c4a3e0a5 1115 pthru->flags = flags;
155d98f0 1116 pthru->data_xfer_len = scsi_bufflen(scp);
c4a3e0a5
BS		 1117
1118 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1119
8d568253
YB		 1120 /*
1121 * If the command is for the tape device, set the
1122 * pthru timeout to the os layer timeout value.
1123 */
1124 if (scp->device->type == TYPE_TAPE) {
1125 if ((scp->request->timeout / HZ) > 0xFFFF)
1126 pthru->timeout = 0xFFFF;
1127 else
1128 pthru->timeout = scp->request->timeout / HZ;
1129 }
1130
c4a3e0a5
BS		 1131 /*
1132 * Construct SGL
1133 */
f4c9a131
YB		 1134 if (instance->flag_ieee == 1) {
1135 pthru->flags |= MFI_FRAME_SGL64;
1136 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1137 &pthru->sgl);
1138 } else if (IS_DMA64) {
c4a3e0a5
BS		 1139 pthru->flags |= MFI_FRAME_SGL64;
1140 pthru->sge_count = megasas_make_sgl64(instance, scp,
1141 &pthru->sgl);
1142 } else
1143 pthru->sge_count = megasas_make_sgl32(instance, scp,
1144 &pthru->sgl);
1145
bdc6fb8d
YB		 1146 if (pthru->sge_count > instance->max_num_sge) {
1147 printk(KERN_ERR "megasas: DCDB two many SGE NUM=%x\n",
1148 pthru->sge_count);
1149 return 0;
1150 }
1151
c4a3e0a5
BS		 1152 /*
1153 * Sense info specific
1154 */
1155 pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1156 pthru->sense_buf_phys_addr_hi = 0;
1157 pthru->sense_buf_phys_addr_lo = cmd->sense_phys_addr;
1158
c4a3e0a5
BS		 1159 /*
1160 * Compute the total number of frames this command consumes. FW uses
1161 * this number to pull sufficient number of frames from host memory.
1162 */
f4c9a131 1163 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
d532dbe2 1164 PTHRU_FRAME);
c4a3e0a5
BS		 1165
1166 return cmd->frame_count;
1167}
1168
1169/**
1170 * megasas_build_ldio - Prepares IOs to logical devices
1171 * @instance: Adapter soft state
1172 * @scp: SCSI command
fd589a8f 1173 * @cmd: Command to be prepared
c4a3e0a5
BS		 1174 *
1175 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1176 */
858119e1 1177static int
c4a3e0a5
BS		 1178megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1179 struct megasas_cmd *cmd)
1180{
c4a3e0a5
BS		 1181 u32 device_id;
1182 u8 sc = scp->cmnd[0];
1183 u16 flags = 0;
1184 struct megasas_io_frame *ldio;
1185
1186 device_id = MEGASAS_DEV_INDEX(instance, scp);
1187 ldio = (struct megasas_io_frame *)cmd->frame;
1188
1189 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1190 flags = MFI_FRAME_DIR_WRITE;
1191 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1192 flags = MFI_FRAME_DIR_READ;
1193
f4c9a131
YB		 1194 if (instance->flag_ieee == 1) {
1195 flags |= MFI_FRAME_IEEE;
1196 }
1197
c4a3e0a5 1198 /*
b1df99d9 1199 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
c4a3e0a5
BS		 1200 */
1201 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1202 ldio->cmd_status = 0x0;
1203 ldio->scsi_status = 0x0;
1204 ldio->target_id = device_id;
1205 ldio->timeout = 0;
1206 ldio->reserved_0 = 0;
1207 ldio->pad_0 = 0;
1208 ldio->flags = flags;
1209 ldio->start_lba_hi = 0;
1210 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1211
1212 /*
1213 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1214 */
1215 if (scp->cmd_len == 6) {
1216 ldio->lba_count = (u32) scp->cmnd[4];
1217 ldio->start_lba_lo = ((u32) scp->cmnd[1] << 16) |
1218 ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
1219
1220 ldio->start_lba_lo &= 0x1FFFFF;
1221 }
1222
1223 /*
1224 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1225 */
1226 else if (scp->cmd_len == 10) {
1227 ldio->lba_count = (u32) scp->cmnd[8] |
1228 ((u32) scp->cmnd[7] << 8);
1229 ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1230 ((u32) scp->cmnd[3] << 16) |
1231 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1232 }
1233
1234 /*
1235 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1236 */
1237 else if (scp->cmd_len == 12) {
1238 ldio->lba_count = ((u32) scp->cmnd[6] << 24) |
1239 ((u32) scp->cmnd[7] << 16) |
1240 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1241
1242 ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1243 ((u32) scp->cmnd[3] << 16) |
1244 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1245 }
1246
1247 /*
1248 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1249 */
1250 else if (scp->cmd_len == 16) {
1251 ldio->lba_count = ((u32) scp->cmnd[10] << 24) |
1252 ((u32) scp->cmnd[11] << 16) |
1253 ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
1254
1255 ldio->start_lba_lo = ((u32) scp->cmnd[6] << 24) |
1256 ((u32) scp->cmnd[7] << 16) |
1257 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1258
1259 ldio->start_lba_hi = ((u32) scp->cmnd[2] << 24) |
1260 ((u32) scp->cmnd[3] << 16) |
1261 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1262
1263 }
1264
1265 /*
1266 * Construct SGL
1267 */
f4c9a131
YB		 1268 if (instance->flag_ieee) {
1269 ldio->flags |= MFI_FRAME_SGL64;
1270 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1271 &ldio->sgl);
1272 } else if (IS_DMA64) {
c4a3e0a5
BS		 1273 ldio->flags |= MFI_FRAME_SGL64;
1274 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1275 } else
1276 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1277
bdc6fb8d
YB		 1278 if (ldio->sge_count > instance->max_num_sge) {
1279 printk(KERN_ERR "megasas: build_ld_io: sge_count = %x\n",
1280 ldio->sge_count);
1281 return 0;
1282 }
1283
c4a3e0a5
BS		 1284 /*
1285 * Sense info specific
1286 */
1287 ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1288 ldio->sense_buf_phys_addr_hi = 0;
1289 ldio->sense_buf_phys_addr_lo = cmd->sense_phys_addr;
1290
b1df99d9
SP		 1291 /*
1292 * Compute the total number of frames this command consumes. FW uses
1293 * this number to pull sufficient number of frames from host memory.
1294 */
f4c9a131
YB		 1295 cmd->frame_count = megasas_get_frame_count(instance,
1296 ldio->sge_count, IO_FRAME);
c4a3e0a5
BS		 1297
1298 return cmd->frame_count;
1299}
1300
1301/**
cb59aa6a
SP		 1302 * megasas_is_ldio - Checks if the cmd is for logical drive
1303 * @scmd: SCSI command
0d49016b 1304 *
cb59aa6a 1305 * Called by megasas_queue_command to find out if the command to be queued
0d49016b 1306 * is a logical drive command
c4a3e0a5 1307 */
9c915a8c 1308inline int megasas_is_ldio(struct scsi_cmnd *cmd)
c4a3e0a5 1309{
cb59aa6a
SP		 1310 if (!MEGASAS_IS_LOGICAL(cmd))
1311 return 0;
1312 switch (cmd->cmnd[0]) {
1313 case READ_10:
1314 case WRITE_10:
1315 case READ_12:
1316 case WRITE_12:
1317 case READ_6:
1318 case WRITE_6:
1319 case READ_16:
1320 case WRITE_16:
1321 return 1;
1322 default:
1323 return 0;
c4a3e0a5 1324 }
c4a3e0a5
BS		 1325}
1326
658dcedb
SP		 1327 /**
1328 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
1329 * in FW
1330 * @instance: Adapter soft state
1331 */
1332static inline void
1333megasas_dump_pending_frames(struct megasas_instance *instance)
1334{
1335 struct megasas_cmd *cmd;
1336 int i,n;
1337 union megasas_sgl *mfi_sgl;
1338 struct megasas_io_frame *ldio;
1339 struct megasas_pthru_frame *pthru;
1340 u32 sgcount;
1341 u32 max_cmd = instance->max_fw_cmds;
1342
1343 printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1344 printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1345 if (IS_DMA64)
1346 printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1347 else
1348 printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1349
1350 printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1351 for (i = 0; i < max_cmd; i++) {
1352 cmd = instance->cmd_list[i];
1353 if(!cmd->scmd)
1354 continue;
1355 printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1356 if (megasas_is_ldio(cmd->scmd)){
1357 ldio = (struct megasas_io_frame *)cmd->frame;
1358 mfi_sgl = &ldio->sgl;
1359 sgcount = ldio->sge_count;
1360 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);
1361 }
1362 else {
1363 pthru = (struct megasas_pthru_frame *) cmd->frame;
1364 mfi_sgl = &pthru->sgl;
1365 sgcount = pthru->sge_count;
1366 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);
1367 }
1368 if(megasas_dbg_lvl & MEGASAS_DBG_LVL){
1369 for (n = 0; n < sgcount; n++){
1370 if (IS_DMA64)
1371 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) ;
1372 else
1373 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ",mfi_sgl->sge32[n].length , mfi_sgl->sge32[n].phys_addr) ;
1374 }
1375 }
1376 printk(KERN_ERR "\n");
1377 } /*for max_cmd*/
1378 printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1379 for (i = 0; i < max_cmd; i++) {
1380
1381 cmd = instance->cmd_list[i];
1382
1383 if(cmd->sync_cmd == 1){
1384 printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1385 }
1386 }
1387 printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no);
1388}
1389
cd50ba8e
AR		 1390u32
1391megasas_build_and_issue_cmd(struct megasas_instance *instance,
1392 struct scsi_cmnd *scmd)
1393{
1394 struct megasas_cmd *cmd;
1395 u32 frame_count;
1396
1397 cmd = megasas_get_cmd(instance);
1398 if (!cmd)
1399 return SCSI_MLQUEUE_HOST_BUSY;
1400
1401 /*
1402 * Logical drive command
1403 */
1404 if (megasas_is_ldio(scmd))
1405 frame_count = megasas_build_ldio(instance, scmd, cmd);
1406 else
1407 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1408
1409 if (!frame_count)
1410 goto out_return_cmd;
1411
1412 cmd->scmd = scmd;
1413 scmd->SCp.ptr = (char *)cmd;
1414
1415 /*
1416 * Issue the command to the FW
1417 */
1418 atomic_inc(&instance->fw_outstanding);
1419
1420 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1421 cmd->frame_count-1, instance->reg_set);
1422 /*
1423 * Check if we have pend cmds to be completed
1424 */
1425 if (poll_mode_io && atomic_read(&instance->fw_outstanding))
1426 tasklet_schedule(&instance->isr_tasklet);
1427
1428 return 0;
1429out_return_cmd:
1430 megasas_return_cmd(instance, cmd);
1431 return 1;
1432}
1433
1434
c4a3e0a5
BS		 1435/**
1436 * megasas_queue_command - Queue entry point
1437 * @scmd: SCSI command to be queued
1438 * @done: Callback entry point
1439 */
1440static int
f281233d 1441megasas_queue_command_lck(struct scsi_cmnd *scmd, void (*done) (struct scsi_cmnd *))
c4a3e0a5 1442{
c4a3e0a5 1443 struct megasas_instance *instance;
39a98554 1444 unsigned long flags;
c4a3e0a5
BS		 1445
1446 instance = (struct megasas_instance *)
1447 scmd->device->host->hostdata;
af37acfb 1448
39a98554 1449 if (instance->issuepend_done == 0)
af37acfb
SP		 1450 return SCSI_MLQUEUE_HOST_BUSY;
1451
39a98554 1452 spin_lock_irqsave(&instance->hba_lock, flags);
1453 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
1454 spin_unlock_irqrestore(&instance->hba_lock, flags);
1455 return SCSI_MLQUEUE_HOST_BUSY;
1456 }
1457
1458 spin_unlock_irqrestore(&instance->hba_lock, flags);
1459
c4a3e0a5
BS		 1460 scmd->scsi_done = done;
1461 scmd->result = 0;
1462
cb59aa6a
SP		 1463 if (MEGASAS_IS_LOGICAL(scmd) &&
1464 (scmd->device->id >= MEGASAS_MAX_LD || scmd->device->lun)) {
1465 scmd->result = DID_BAD_TARGET << 16;
1466 goto out_done;
c4a3e0a5
BS		 1467 }
1468
02b01e01
SP		 1469 switch (scmd->cmnd[0]) {
1470 case SYNCHRONIZE_CACHE:
1471 /*
1472 * FW takes care of flush cache on its own
1473 * No need to send it down
1474 */
1475 scmd->result = DID_OK << 16;
1476 goto out_done;
1477 default:
1478 break;
1479 }
1480
cd50ba8e
AR		 1481 if (instance->instancet->build_and_issue_cmd(instance, scmd)) {
1482 printk(KERN_ERR "megasas: Err returned from build_and_issue_cmd\n");
cb59aa6a 1483 return SCSI_MLQUEUE_HOST_BUSY;
cd50ba8e 1484 }
c4a3e0a5
BS		 1485
1486 return 0;
cb59aa6a 1487
cb59aa6a
SP		 1488 out_done:
1489 done(scmd);
1490 return 0;
c4a3e0a5
BS		 1491}
1492
f281233d
JG		 1493static DEF_SCSI_QCMD(megasas_queue_command)
1494
044833b5
YB		 1495static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1496{
1497 int i;
1498
1499 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1500
1501 if ((megasas_mgmt_info.instance[i]) &&
1502 (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1503 return megasas_mgmt_info.instance[i];
1504 }
1505
1506 return NULL;
1507}
1508
147aab6a
CH		 1509static int megasas_slave_configure(struct scsi_device *sdev)
1510{
044833b5
YB		 1511 u16 pd_index = 0;
1512 struct megasas_instance *instance ;
1513
1514 instance = megasas_lookup_instance(sdev->host->host_no);
1515
147aab6a 1516 /*
044833b5
YB		 1517 * Don't export physical disk devices to the disk driver.
1518 *
1519 * FIXME: Currently we don't export them to the midlayer at all.
1520 * That will be fixed once LSI engineers have audited the
1521 * firmware for possible issues.
1522 */
1523 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS &&
1524 sdev->type == TYPE_DISK) {
1525 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1526 sdev->id;
1527 if (instance->pd_list[pd_index].driveState ==
1528 MR_PD_STATE_SYSTEM) {
1529 blk_queue_rq_timeout(sdev->request_queue,
1530 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
1531 return 0;
1532 }
147aab6a 1533 return -ENXIO;
044833b5 1534 }
e5b3a65f
CH		 1535
1536 /*
044833b5
YB		 1537 * The RAID firmware may require extended timeouts.
1538 */
1539 blk_queue_rq_timeout(sdev->request_queue,
1540 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
1541 return 0;
1542}
1543
1544static int megasas_slave_alloc(struct scsi_device *sdev)
1545{
1546 u16 pd_index = 0;
1547 struct megasas_instance *instance ;
1548 instance = megasas_lookup_instance(sdev->host->host_no);
1549 if ((sdev->channel < MEGASAS_MAX_PD_CHANNELS) &&
1550 (sdev->type == TYPE_DISK)) {
1551 /*
1552 * Open the OS scan to the SYSTEM PD
1553 */
1554 pd_index =
1555 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1556 sdev->id;
1557 if ((instance->pd_list[pd_index].driveState ==
1558 MR_PD_STATE_SYSTEM) &&
1559 (instance->pd_list[pd_index].driveType ==
1560 TYPE_DISK)) {
1561 return 0;
1562 }
1563 return -ENXIO;
1564 }
147aab6a
CH		 1565 return 0;
1566}
1567
9c915a8c 1568void megaraid_sas_kill_hba(struct megasas_instance *instance)
39a98554 1569{
1570 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
9c915a8c
AR		 1571 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
1572 (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION)) {
1573 writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
39a98554 1574 } else {
9c915a8c
AR		 1575 writel(MFI_STOP_ADP, &instance->reg_set->inbound_doorbell);
1576 }
1577}
1578
1579 /**
1580 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
1581 * restored to max value
1582 * @instance: Adapter soft state
1583 *
1584 */
1585void
1586megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
1587{
1588 unsigned long flags;
1589 if (instance->flag & MEGASAS_FW_BUSY
1590 && time_after(jiffies, instance->last_time + 5 * HZ)
1591 && atomic_read(&instance->fw_outstanding) < 17) {
1592
1593 spin_lock_irqsave(instance->host->host_lock, flags);
1594 instance->flag &= ~MEGASAS_FW_BUSY;
1595 if ((instance->pdev->device ==
1596 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1597 (instance->pdev->device ==
1598 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
1599 instance->host->can_queue =
1600 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
1601 } else
1602 instance->host->can_queue =
1603 instance->max_fw_cmds - MEGASAS_INT_CMDS;
1604
1605 spin_unlock_irqrestore(instance->host->host_lock, flags);
39a98554 1606 }
1607}
1608
7343eb65 1609/**
1610 * megasas_complete_cmd_dpc - Returns FW's controller structure
1611 * @instance_addr: Address of adapter soft state
1612 *
1613 * Tasklet to complete cmds
1614 */
1615static void megasas_complete_cmd_dpc(unsigned long instance_addr)
1616{
1617 u32 producer;
1618 u32 consumer;
1619 u32 context;
1620 struct megasas_cmd *cmd;
1621 struct megasas_instance *instance =
1622 (struct megasas_instance *)instance_addr;
1623 unsigned long flags;
1624
1625 /* If we have already declared adapter dead, donot complete cmds */
39a98554 1626 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR )
7343eb65 1627 return;
1628
1629 spin_lock_irqsave(&instance->completion_lock, flags);
1630
1631 producer = *instance->producer;
1632 consumer = *instance->consumer;
1633
1634 while (consumer != producer) {
1635 context = instance->reply_queue[consumer];
39a98554 1636 if (context >= instance->max_fw_cmds) {
1637 printk(KERN_ERR "Unexpected context value %x\n",
1638 context);
1639 BUG();
1640 }
7343eb65 1641
1642 cmd = instance->cmd_list[context];
1643
1644 megasas_complete_cmd(instance, cmd, DID_OK);
1645
1646 consumer++;
1647 if (consumer == (instance->max_fw_cmds + 1)) {
1648 consumer = 0;
1649 }
1650 }
1651
1652 *instance->consumer = producer;
1653
1654 spin_unlock_irqrestore(&instance->completion_lock, flags);
1655
1656 /*
1657 * Check if we can restore can_queue
1658 */
9c915a8c 1659 megasas_check_and_restore_queue_depth(instance);
7343eb65 1660}
1661
707e09bd
YB		 1662static void
1663megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
1664
1665static void
1666process_fw_state_change_wq(struct work_struct *work);
1667
1668void megasas_do_ocr(struct megasas_instance *instance)
1669{
1670 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
1671 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
1672 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
1673 *instance->consumer = MEGASAS_ADPRESET_INPROG_SIGN;
1674 }
1675 instance->instancet->disable_intr(instance->reg_set);
1676 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
1677 instance->issuepend_done = 0;
1678
1679 atomic_set(&instance->fw_outstanding, 0);
1680 megasas_internal_reset_defer_cmds(instance);
1681 process_fw_state_change_wq(&instance->work_init);
1682}
1683
c4a3e0a5
BS		 1684/**
1685 * megasas_wait_for_outstanding - Wait for all outstanding cmds
1686 * @instance: Adapter soft state
1687 *
1688 * This function waits for upto MEGASAS_RESET_WAIT_TIME seconds for FW to
1689 * complete all its outstanding commands. Returns error if one or more IOs
1690 * are pending after this time period. It also marks the controller dead.
1691 */
1692static int megasas_wait_for_outstanding(struct megasas_instance *instance)
1693{
1694 int i;
39a98554 1695 u32 reset_index;
c4a3e0a5 1696 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
39a98554 1697 u8 adprecovery;
1698 unsigned long flags;
1699 struct list_head clist_local;
1700 struct megasas_cmd *reset_cmd;
707e09bd
YB		 1701 u32 fw_state;
1702 u8 kill_adapter_flag;
39a98554 1703
1704 spin_lock_irqsave(&instance->hba_lock, flags);
1705 adprecovery = instance->adprecovery;
1706 spin_unlock_irqrestore(&instance->hba_lock, flags);
1707
1708 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
1709
1710 INIT_LIST_HEAD(&clist_local);
1711 spin_lock_irqsave(&instance->hba_lock, flags);
1712 list_splice_init(&instance->internal_reset_pending_q,
1713 &clist_local);
1714 spin_unlock_irqrestore(&instance->hba_lock, flags);
1715
1716 printk(KERN_NOTICE "megasas: HBA reset wait ...\n");
1717 for (i = 0; i < wait_time; i++) {
1718 msleep(1000);
1719 spin_lock_irqsave(&instance->hba_lock, flags);
1720 adprecovery = instance->adprecovery;
1721 spin_unlock_irqrestore(&instance->hba_lock, flags);
1722 if (adprecovery == MEGASAS_HBA_OPERATIONAL)
1723 break;
1724 }
1725
1726 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
1727 printk(KERN_NOTICE "megasas: reset: Stopping HBA.\n");
1728 spin_lock_irqsave(&instance->hba_lock, flags);
1729 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
1730 spin_unlock_irqrestore(&instance->hba_lock, flags);
1731 return FAILED;
1732 }
1733
1734 reset_index = 0;
1735 while (!list_empty(&clist_local)) {
1736 reset_cmd = list_entry((&clist_local)->next,
1737 struct megasas_cmd, list);
1738 list_del_init(&reset_cmd->list);
1739 if (reset_cmd->scmd) {
1740 reset_cmd->scmd->result = DID_RESET << 16;
1741 printk(KERN_NOTICE "%d:%p reset [%02x], %#lx\n",
1742 reset_index, reset_cmd,
1743 reset_cmd->scmd->cmnd[0],
1744 reset_cmd->scmd->serial_number);
1745
1746 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
1747 megasas_return_cmd(instance, reset_cmd);
1748 } else if (reset_cmd->sync_cmd) {
1749 printk(KERN_NOTICE "megasas:%p synch cmds"
1750 "reset queue\n",
1751 reset_cmd);
1752
1753 reset_cmd->cmd_status = ENODATA;
1754 instance->instancet->fire_cmd(instance,
1755 reset_cmd->frame_phys_addr,
1756 0, instance->reg_set);
1757 } else {
1758 printk(KERN_NOTICE "megasas: %p unexpected"
1759 "cmds lst\n",
1760 reset_cmd);
1761 }
1762 reset_index++;
1763 }
1764
1765 return SUCCESS;
1766 }
c4a3e0a5
BS		 1767
1768 for (i = 0; i < wait_time; i++) {
1769
e4a082c7
SP		 1770 int outstanding = atomic_read(&instance->fw_outstanding);
1771
1772 if (!outstanding)
c4a3e0a5
BS		 1773 break;
1774
1775 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
1776 printk(KERN_NOTICE "megasas: [%2d]waiting for %d "
e4a082c7 1777 "commands to complete\n",i,outstanding);
7343eb65 1778 /*
1779 * Call cmd completion routine. Cmd to be
1780 * be completed directly without depending on isr.
1781 */
1782 megasas_complete_cmd_dpc((unsigned long)instance);
c4a3e0a5
BS		 1783 }
1784
1785 msleep(1000);
1786 }
1787
707e09bd
YB		 1788 i = 0;
1789 kill_adapter_flag = 0;
1790 do {
1791 fw_state = instance->instancet->read_fw_status_reg(
1792 instance->reg_set) & MFI_STATE_MASK;
1793 if ((fw_state == MFI_STATE_FAULT) &&
1794 (instance->disableOnlineCtrlReset == 0)) {
1795 if (i == 3) {
1796 kill_adapter_flag = 2;
1797 break;
1798 }
1799 megasas_do_ocr(instance);
1800 kill_adapter_flag = 1;
1801
1802 /* wait for 1 secs to let FW finish the pending cmds */
1803 msleep(1000);
1804 }
1805 i++;
1806 } while (i <= 3);
1807
1808 if (atomic_read(&instance->fw_outstanding) &&
1809 !kill_adapter_flag) {
1810 if (instance->disableOnlineCtrlReset == 0) {
1811
1812 megasas_do_ocr(instance);
1813
1814 /* wait for 5 secs to let FW finish the pending cmds */
1815 for (i = 0; i < wait_time; i++) {
1816 int outstanding =
1817 atomic_read(&instance->fw_outstanding);
1818 if (!outstanding)
1819 return SUCCESS;
1820 msleep(1000);
1821 }
1822 }
1823 }
1824
1825 if (atomic_read(&instance->fw_outstanding) ||
1826 (kill_adapter_flag == 2)) {
39a98554 1827 printk(KERN_NOTICE "megaraid_sas: pending cmds after reset\n");
e3bbff9f
SP		 1828 /*
1829 * Send signal to FW to stop processing any pending cmds.
1830 * The controller will be taken offline by the OS now.
1831 */
0c79e681
YB		 1832 if ((instance->pdev->device ==
1833 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1834 (instance->pdev->device ==
1835 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
1836 writel(MFI_STOP_ADP,
9c915a8c 1837 &instance->reg_set->doorbell);
0c79e681
YB		 1838 } else {
1839 writel(MFI_STOP_ADP,
e3bbff9f 1840 &instance->reg_set->inbound_doorbell);
0c79e681 1841 }
658dcedb 1842 megasas_dump_pending_frames(instance);
39a98554 1843 spin_lock_irqsave(&instance->hba_lock, flags);
1844 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
1845 spin_unlock_irqrestore(&instance->hba_lock, flags);
c4a3e0a5
BS		 1846 return FAILED;
1847 }
1848
39a98554 1849 printk(KERN_NOTICE "megaraid_sas: no pending cmds after reset\n");
1850
c4a3e0a5
BS		 1851 return SUCCESS;
1852}
1853
1854/**
1855 * megasas_generic_reset - Generic reset routine
1856 * @scmd: Mid-layer SCSI command
1857 *
1858 * This routine implements a generic reset handler for device, bus and host
1859 * reset requests. Device, bus and host specific reset handlers can use this
1860 * function after they do their specific tasks.
1861 */
1862static int megasas_generic_reset(struct scsi_cmnd *scmd)
1863{
1864 int ret_val;
1865 struct megasas_instance *instance;
1866
1867 instance = (struct megasas_instance *)scmd->device->host->hostdata;
1868
05e9ebbe
SP		 1869 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET -%ld cmd=%x retries=%x\n",
1870 scmd->serial_number, scmd->cmnd[0], scmd->retries);
c4a3e0a5 1871
39a98554 1872 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
c4a3e0a5
BS		 1873 printk(KERN_ERR "megasas: cannot recover from previous reset "
1874 "failures\n");
1875 return FAILED;
1876 }
1877
c4a3e0a5 1878 ret_val = megasas_wait_for_outstanding(instance);
c4a3e0a5
BS		 1879 if (ret_val == SUCCESS)
1880 printk(KERN_NOTICE "megasas: reset successful \n");
1881 else
1882 printk(KERN_ERR "megasas: failed to do reset\n");
1883
c4a3e0a5
BS		 1884 return ret_val;
1885}
1886
05e9ebbe
SP		 1887/**
1888 * megasas_reset_timer - quiesce the adapter if required
1889 * @scmd: scsi cmnd
1890 *
1891 * Sets the FW busy flag and reduces the host->can_queue if the
1892 * cmd has not been completed within the timeout period.
1893 */
1894static enum
242f9dcb 1895blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
05e9ebbe
SP		 1896{
1897 struct megasas_cmd *cmd = (struct megasas_cmd *)scmd->SCp.ptr;
1898 struct megasas_instance *instance;
1899 unsigned long flags;
1900
1901 if (time_after(jiffies, scmd->jiffies_at_alloc +
1902 (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) {
242f9dcb 1903 return BLK_EH_NOT_HANDLED;
05e9ebbe
SP		 1904 }
1905
1906 instance = cmd->instance;
1907 if (!(instance->flag & MEGASAS_FW_BUSY)) {
1908 /* FW is busy, throttle IO */
1909 spin_lock_irqsave(instance->host->host_lock, flags);
1910
1911 instance->host->can_queue = 16;
1912 instance->last_time = jiffies;
1913 instance->flag |= MEGASAS_FW_BUSY;
1914
1915 spin_unlock_irqrestore(instance->host->host_lock, flags);
1916 }
242f9dcb 1917 return BLK_EH_RESET_TIMER;
05e9ebbe
SP		 1918}
1919
c4a3e0a5
BS		 1920/**
1921 * megasas_reset_device - Device reset handler entry point
1922 */
1923static int megasas_reset_device(struct scsi_cmnd *scmd)
1924{
1925 int ret;
1926
1927 /*
1928 * First wait for all commands to complete
1929 */
1930 ret = megasas_generic_reset(scmd);
1931
1932 return ret;
1933}
1934
1935/**
1936 * megasas_reset_bus_host - Bus & host reset handler entry point
1937 */
1938static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
1939{
1940 int ret;
9c915a8c
AR		 1941 struct megasas_instance *instance;
1942 instance = (struct megasas_instance *)scmd->device->host->hostdata;
c4a3e0a5
BS		 1943
1944 /*
80682fa9 1945 * First wait for all commands to complete
c4a3e0a5 1946 */
9c915a8c
AR		 1947 if (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION)
1948 ret = megasas_reset_fusion(scmd->device->host);
1949 else
1950 ret = megasas_generic_reset(scmd);
c4a3e0a5
BS		 1951
1952 return ret;
1953}
1954
cf62a0a5
SP		 1955/**
1956 * megasas_bios_param - Returns disk geometry for a disk
1957 * @sdev: device handle
1958 * @bdev: block device
1959 * @capacity: drive capacity
1960 * @geom: geometry parameters
1961 */
1962static int
1963megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
1964 sector_t capacity, int geom[])
1965{
1966 int heads;
1967 int sectors;
1968 sector_t cylinders;
1969 unsigned long tmp;
1970 /* Default heads (64) & sectors (32) */
1971 heads = 64;
1972 sectors = 32;
1973
1974 tmp = heads * sectors;
1975 cylinders = capacity;
1976
1977 sector_div(cylinders, tmp);
1978
1979 /*
1980 * Handle extended translation size for logical drives > 1Gb
1981 */
1982
1983 if (capacity >= 0x200000) {
1984 heads = 255;
1985 sectors = 63;
1986 tmp = heads*sectors;
1987 cylinders = capacity;
1988 sector_div(cylinders, tmp);
1989 }
1990
1991 geom[0] = heads;
1992 geom[1] = sectors;
1993 geom[2] = cylinders;
1994
1995 return 0;
1996}
1997
7e8a75f4
YB		 1998static void megasas_aen_polling(struct work_struct *work);
1999
c4a3e0a5
BS		 2000/**
2001 * megasas_service_aen - Processes an event notification
2002 * @instance: Adapter soft state
2003 * @cmd: AEN command completed by the ISR
2004 *
2005 * For AEN, driver sends a command down to FW that is held by the FW till an
2006 * event occurs. When an event of interest occurs, FW completes the command
2007 * that it was previously holding.
2008 *
2009 * This routines sends SIGIO signal to processes that have registered with the
2010 * driver for AEN.
2011 */
2012static void
2013megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
2014{
c3518837 2015 unsigned long flags;
c4a3e0a5
BS		 2016 /*
2017 * Don't signal app if it is just an aborted previously registered aen
2018 */
c3518837
YB		 2019 if ((!cmd->abort_aen) && (instance->unload == 0)) {
2020 spin_lock_irqsave(&poll_aen_lock, flags);
2021 megasas_poll_wait_aen = 1;
2022 spin_unlock_irqrestore(&poll_aen_lock, flags);
2023 wake_up(&megasas_poll_wait);
c4a3e0a5 2024 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
c3518837 2025 }
c4a3e0a5
BS		 2026 else
2027 cmd->abort_aen = 0;
2028
2029 instance->aen_cmd = NULL;
2030 megasas_return_cmd(instance, cmd);
7e8a75f4 2031
39a98554 2032 if ((instance->unload == 0) &&
2033 ((instance->issuepend_done == 1))) {
7e8a75f4
YB		 2034 struct megasas_aen_event *ev;
2035 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
2036 if (!ev) {
2037 printk(KERN_ERR "megasas_service_aen: out of memory\n");
2038 } else {
2039 ev->instance = instance;
2040 instance->ev = ev;
2041 INIT_WORK(&ev->hotplug_work, megasas_aen_polling);
2042 schedule_delayed_work(
2043 (struct delayed_work *)&ev->hotplug_work, 0);
2044 }
2045 }
c4a3e0a5
BS		 2046}
2047
2048/*
2049 * Scsi host template for megaraid_sas driver
2050 */
2051static struct scsi_host_template megasas_template = {
2052
2053 .module = THIS_MODULE,
f28cd7cf 2054 .name = "LSI SAS based MegaRAID driver",
c4a3e0a5 2055 .proc_name = "megaraid_sas",
147aab6a 2056 .slave_configure = megasas_slave_configure,
044833b5 2057 .slave_alloc = megasas_slave_alloc,
c4a3e0a5
BS		 2058 .queuecommand = megasas_queue_command,
2059 .eh_device_reset_handler = megasas_reset_device,
2060 .eh_bus_reset_handler = megasas_reset_bus_host,
2061 .eh_host_reset_handler = megasas_reset_bus_host,
05e9ebbe 2062 .eh_timed_out = megasas_reset_timer,
cf62a0a5 2063 .bios_param = megasas_bios_param,
c4a3e0a5
BS		 2064 .use_clustering = ENABLE_CLUSTERING,
2065};
2066
2067/**
2068 * megasas_complete_int_cmd - Completes an internal command
2069 * @instance: Adapter soft state
2070 * @cmd: Command to be completed
2071 *
2072 * The megasas_issue_blocked_cmd() function waits for a command to complete
2073 * after it issues a command. This function wakes up that waiting routine by
2074 * calling wake_up() on the wait queue.
2075 */
2076static void
2077megasas_complete_int_cmd(struct megasas_instance *instance,
2078 struct megasas_cmd *cmd)
2079{
2080 cmd->cmd_status = cmd->frame->io.cmd_status;
2081
2082 if (cmd->cmd_status == ENODATA) {
2083 cmd->cmd_status = 0;
2084 }
2085 wake_up(&instance->int_cmd_wait_q);
2086}
2087
2088/**
2089 * megasas_complete_abort - Completes aborting a command
2090 * @instance: Adapter soft state
2091 * @cmd: Cmd that was issued to abort another cmd
2092 *
0d49016b
AR		 2093 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
2094 * after it issues an abort on a previously issued command. This function
c4a3e0a5
BS		 2095 * wakes up all functions waiting on the same wait queue.
2096 */
2097static void
2098megasas_complete_abort(struct megasas_instance *instance,
2099 struct megasas_cmd *cmd)
2100{
2101 if (cmd->sync_cmd) {
2102 cmd->sync_cmd = 0;
2103 cmd->cmd_status = 0;
2104 wake_up(&instance->abort_cmd_wait_q);
2105 }
2106
2107 return;
2108}
2109
c4a3e0a5
BS		 2110/**
2111 * megasas_complete_cmd - Completes a command
2112 * @instance: Adapter soft state
2113 * @cmd: Command to be completed
0d49016b 2114 * @alt_status: If non-zero, use this value as status to
c4a3e0a5
BS		 2115 * SCSI mid-layer instead of the value returned
2116 * by the FW. This should be used if caller wants
2117 * an alternate status (as in the case of aborted
2118 * commands)
2119 */
9c915a8c 2120void
c4a3e0a5
BS		 2121megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
2122 u8 alt_status)
2123{
2124 int exception = 0;
2125 struct megasas_header *hdr = &cmd->frame->hdr;
c3518837 2126 unsigned long flags;
9c915a8c 2127 struct fusion_context *fusion = instance->ctrl_context;
c4a3e0a5 2128
39a98554 2129 /* flag for the retry reset */
2130 cmd->retry_for_fw_reset = 0;
2131
05e9ebbe
SP		 2132 if (cmd->scmd)
2133 cmd->scmd->SCp.ptr = NULL;
c4a3e0a5
BS		 2134
2135 switch (hdr->cmd) {
2136
2137 case MFI_CMD_PD_SCSI_IO:
2138 case MFI_CMD_LD_SCSI_IO:
2139
2140 /*
2141 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
2142 * issued either through an IO path or an IOCTL path. If it
2143 * was via IOCTL, we will send it to internal completion.
2144 */
2145 if (cmd->sync_cmd) {
2146 cmd->sync_cmd = 0;
2147 megasas_complete_int_cmd(instance, cmd);
2148 break;
2149 }
2150
c4a3e0a5
BS		 2151 case MFI_CMD_LD_READ:
2152 case MFI_CMD_LD_WRITE:
2153
2154 if (alt_status) {
2155 cmd->scmd->result = alt_status << 16;
2156 exception = 1;
2157 }
2158
2159 if (exception) {
2160
e4a082c7 2161 atomic_dec(&instance->fw_outstanding);
c4a3e0a5 2162
155d98f0 2163 scsi_dma_unmap(cmd->scmd);
c4a3e0a5
BS		 2164 cmd->scmd->scsi_done(cmd->scmd);
2165 megasas_return_cmd(instance, cmd);
2166
2167 break;
2168 }
2169
2170 switch (hdr->cmd_status) {
2171
2172 case MFI_STAT_OK:
2173 cmd->scmd->result = DID_OK << 16;
2174 break;
2175
2176 case MFI_STAT_SCSI_IO_FAILED:
2177 case MFI_STAT_LD_INIT_IN_PROGRESS:
2178 cmd->scmd->result =
2179 (DID_ERROR << 16) | hdr->scsi_status;
2180 break;
2181
2182 case MFI_STAT_SCSI_DONE_WITH_ERROR:
2183
2184 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
2185
2186 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
2187 memset(cmd->scmd->sense_buffer, 0,
2188 SCSI_SENSE_BUFFERSIZE);
2189 memcpy(cmd->scmd->sense_buffer, cmd->sense,
2190 hdr->sense_len);
2191
2192 cmd->scmd->result |= DRIVER_SENSE << 24;
2193 }
2194
2195 break;
2196
2197 case MFI_STAT_LD_OFFLINE:
2198 case MFI_STAT_DEVICE_NOT_FOUND:
2199 cmd->scmd->result = DID_BAD_TARGET << 16;
2200 break;
2201
2202 default:
2203 printk(KERN_DEBUG "megasas: MFI FW status %#x\n",
2204 hdr->cmd_status);
2205 cmd->scmd->result = DID_ERROR << 16;
2206 break;
2207 }
2208
e4a082c7 2209 atomic_dec(&instance->fw_outstanding);
c4a3e0a5 2210
155d98f0 2211 scsi_dma_unmap(cmd->scmd);
c4a3e0a5
BS		 2212 cmd->scmd->scsi_done(cmd->scmd);
2213 megasas_return_cmd(instance, cmd);
2214
2215 break;
2216
2217 case MFI_CMD_SMP:
2218 case MFI_CMD_STP:
2219 case MFI_CMD_DCMD:
9c915a8c
AR		 2220 /* Check for LD map update */
2221 if ((cmd->frame->dcmd.opcode == MR_DCMD_LD_MAP_GET_INFO) &&
2222 (cmd->frame->dcmd.mbox.b[1] == 1)) {
2223 spin_lock_irqsave(instance->host->host_lock, flags);
2224 if (cmd->frame->hdr.cmd_status != 0) {
2225 if (cmd->frame->hdr.cmd_status !=
2226 MFI_STAT_NOT_FOUND)
2227 printk(KERN_WARNING "megasas: map sync"
2228 "failed, status = 0x%x.\n",
2229 cmd->frame->hdr.cmd_status);
2230 else {
2231 megasas_return_cmd(instance, cmd);
2232 spin_unlock_irqrestore(
2233 instance->host->host_lock,
2234 flags);
2235 break;
2236 }
2237 } else
2238 instance->map_id++;
2239 megasas_return_cmd(instance, cmd);
2240 if (MR_ValidateMapInfo(
2241 fusion->ld_map[(instance->map_id & 1)],
2242 fusion->load_balance_info))
2243 fusion->fast_path_io = 1;
2244 else
2245 fusion->fast_path_io = 0;
2246 megasas_sync_map_info(instance);
2247 spin_unlock_irqrestore(instance->host->host_lock,
2248 flags);
2249 break;
2250 }
c3518837
YB		 2251 if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
2252 cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET) {
2253 spin_lock_irqsave(&poll_aen_lock, flags);
2254 megasas_poll_wait_aen = 0;
2255 spin_unlock_irqrestore(&poll_aen_lock, flags);
2256 }
c4a3e0a5
BS		 2257
2258 /*
2259 * See if got an event notification
2260 */
2261 if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_WAIT)
2262 megasas_service_aen(instance, cmd);
2263 else
2264 megasas_complete_int_cmd(instance, cmd);
2265
2266 break;
2267
2268 case MFI_CMD_ABORT:
2269 /*
2270 * Cmd issued to abort another cmd returned
2271 */
2272 megasas_complete_abort(instance, cmd);
2273 break;
2274
2275 default:
2276 printk("megasas: Unknown command completed! [0x%X]\n",
2277 hdr->cmd);
2278 break;
2279 }
2280}
2281
39a98554 2282/**
2283 * megasas_issue_pending_cmds_again - issue all pending cmds
2284 * in FW again because of the fw reset
2285 * @instance: Adapter soft state
2286 */
2287static inline void
2288megasas_issue_pending_cmds_again(struct megasas_instance *instance)
2289{
2290 struct megasas_cmd *cmd;
2291 struct list_head clist_local;
2292 union megasas_evt_class_locale class_locale;
2293 unsigned long flags;
2294 u32 seq_num;
2295
2296 INIT_LIST_HEAD(&clist_local);
2297 spin_lock_irqsave(&instance->hba_lock, flags);
2298 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
2299 spin_unlock_irqrestore(&instance->hba_lock, flags);
2300
2301 while (!list_empty(&clist_local)) {
2302 cmd = list_entry((&clist_local)->next,
2303 struct megasas_cmd, list);
2304 list_del_init(&cmd->list);
2305
2306 if (cmd->sync_cmd || cmd->scmd) {
2307 printk(KERN_NOTICE "megaraid_sas: command %p, %p:%d"
2308 "detected to be pending while HBA reset.\n",
2309 cmd, cmd->scmd, cmd->sync_cmd);
2310
2311 cmd->retry_for_fw_reset++;
2312
2313 if (cmd->retry_for_fw_reset == 3) {
2314 printk(KERN_NOTICE "megaraid_sas: cmd %p, %p:%d"
2315 "was tried multiple times during reset."
2316 "Shutting down the HBA\n",
2317 cmd, cmd->scmd, cmd->sync_cmd);
2318 megaraid_sas_kill_hba(instance);
2319
2320 instance->adprecovery =
2321 MEGASAS_HW_CRITICAL_ERROR;
2322 return;
2323 }
2324 }
2325
2326 if (cmd->sync_cmd == 1) {
2327 if (cmd->scmd) {
2328 printk(KERN_NOTICE "megaraid_sas: unexpected"
2329 "cmd attached to internal command!\n");
2330 }
2331 printk(KERN_NOTICE "megasas: %p synchronous cmd"
2332 "on the internal reset queue,"
2333 "issue it again.\n", cmd);
2334 cmd->cmd_status = ENODATA;
2335 instance->instancet->fire_cmd(instance,
2336 cmd->frame_phys_addr ,
2337 0, instance->reg_set);
2338 } else if (cmd->scmd) {
2339 printk(KERN_NOTICE "megasas: %p scsi cmd [%02x],%#lx"
2340 "detected on the internal queue, issue again.\n",
2341 cmd, cmd->scmd->cmnd[0], cmd->scmd->serial_number);
2342
2343 atomic_inc(&instance->fw_outstanding);
2344 instance->instancet->fire_cmd(instance,
2345 cmd->frame_phys_addr,
2346 cmd->frame_count-1, instance->reg_set);
2347 } else {
2348 printk(KERN_NOTICE "megasas: %p unexpected cmd on the"
2349 "internal reset defer list while re-issue!!\n",
2350 cmd);
2351 }
2352 }
2353
2354 if (instance->aen_cmd) {
2355 printk(KERN_NOTICE "megaraid_sas: aen_cmd in def process\n");
2356 megasas_return_cmd(instance, instance->aen_cmd);
2357
2358 instance->aen_cmd = NULL;
2359 }
2360
2361 /*
2362 * Initiate AEN (Asynchronous Event Notification)
2363 */
2364 seq_num = instance->last_seq_num;
2365 class_locale.members.reserved = 0;
2366 class_locale.members.locale = MR_EVT_LOCALE_ALL;
2367 class_locale.members.class = MR_EVT_CLASS_DEBUG;
2368
2369 megasas_register_aen(instance, seq_num, class_locale.word);
2370}
2371
2372/**
2373 * Move the internal reset pending commands to a deferred queue.
2374 *
2375 * We move the commands pending at internal reset time to a
2376 * pending queue. This queue would be flushed after successful
2377 * completion of the internal reset sequence. if the internal reset
2378 * did not complete in time, the kernel reset handler would flush
2379 * these commands.
2380 **/
2381static void
2382megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
2383{
2384 struct megasas_cmd *cmd;
2385 int i;
2386 u32 max_cmd = instance->max_fw_cmds;
2387 u32 defer_index;
2388 unsigned long flags;
2389
2390 defer_index = 0;
2391 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
2392 for (i = 0; i < max_cmd; i++) {
2393 cmd = instance->cmd_list[i];
2394 if (cmd->sync_cmd == 1 || cmd->scmd) {
2395 printk(KERN_NOTICE "megasas: moving cmd[%d]:%p:%d:%p"
2396 "on the defer queue as internal\n",
2397 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
2398
2399 if (!list_empty(&cmd->list)) {
2400 printk(KERN_NOTICE "megaraid_sas: ERROR while"
2401 " moving this cmd:%p, %d %p, it was"
2402 "discovered on some list?\n",
2403 cmd, cmd->sync_cmd, cmd->scmd);
2404
2405 list_del_init(&cmd->list);
2406 }
2407 defer_index++;
2408 list_add_tail(&cmd->list,
2409 &instance->internal_reset_pending_q);
2410 }
2411 }
2412 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
2413}
2414
2415
2416static void
2417process_fw_state_change_wq(struct work_struct *work)
2418{
2419 struct megasas_instance *instance =
2420 container_of(work, struct megasas_instance, work_init);
2421 u32 wait;
2422 unsigned long flags;
2423
2424 if (instance->adprecovery != MEGASAS_ADPRESET_SM_INFAULT) {
2425 printk(KERN_NOTICE "megaraid_sas: error, recovery st %x \n",
2426 instance->adprecovery);
2427 return ;
2428 }
2429
2430 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) {
2431 printk(KERN_NOTICE "megaraid_sas: FW detected to be in fault"
2432 "state, restarting it...\n");
2433
2434 instance->instancet->disable_intr(instance->reg_set);
2435 atomic_set(&instance->fw_outstanding, 0);
2436
2437 atomic_set(&instance->fw_reset_no_pci_access, 1);
2438 instance->instancet->adp_reset(instance, instance->reg_set);
2439 atomic_set(&instance->fw_reset_no_pci_access, 0 );
2440
2441 printk(KERN_NOTICE "megaraid_sas: FW restarted successfully,"
2442 "initiating next stage...\n");
2443
2444 printk(KERN_NOTICE "megaraid_sas: HBA recovery state machine,"
2445 "state 2 starting...\n");
2446
2447 /*waitting for about 20 second before start the second init*/
2448 for (wait = 0; wait < 30; wait++) {
2449 msleep(1000);
2450 }
2451
2452 if (megasas_transition_to_ready(instance)) {
2453 printk(KERN_NOTICE "megaraid_sas:adapter not ready\n");
2454
2455 megaraid_sas_kill_hba(instance);
2456 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2457 return ;
2458 }
2459
2460 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2461 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2462 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
2463 ) {
2464 *instance->consumer = *instance->producer;
2465 } else {
2466 *instance->consumer = 0;
2467 *instance->producer = 0;
2468 }
2469
2470 megasas_issue_init_mfi(instance);
2471
2472 spin_lock_irqsave(&instance->hba_lock, flags);
2473 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
2474 spin_unlock_irqrestore(&instance->hba_lock, flags);
2475 instance->instancet->enable_intr(instance->reg_set);
2476
2477 megasas_issue_pending_cmds_again(instance);
2478 instance->issuepend_done = 1;
2479 }
2480 return ;
2481}
2482
c4a3e0a5
BS		 2483/**
2484 * megasas_deplete_reply_queue - Processes all completed commands
2485 * @instance: Adapter soft state
2486 * @alt_status: Alternate status to be returned to
2487 * SCSI mid-layer instead of the status
2488 * returned by the FW
39a98554 2489 * Note: this must be called with hba lock held
c4a3e0a5 2490 */
858119e1 2491static int
39a98554 2492megasas_deplete_reply_queue(struct megasas_instance *instance,
2493 u8 alt_status)
c4a3e0a5 2494{
39a98554 2495 u32 mfiStatus;
2496 u32 fw_state;
2497
2498 if ((mfiStatus = instance->instancet->check_reset(instance,
2499 instance->reg_set)) == 1) {
2500 return IRQ_HANDLED;
2501 }
2502
2503 if ((mfiStatus = instance->instancet->clear_intr(
2504 instance->reg_set)
2505 ) == 0) {
e1419191
AR		 2506 /* Hardware may not set outbound_intr_status in MSI-X mode */
2507 if (!instance->msi_flag)
2508 return IRQ_NONE;
39a98554 2509 }
2510
2511 instance->mfiStatus = mfiStatus;
2512
2513 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
2514 fw_state = instance->instancet->read_fw_status_reg(
2515 instance->reg_set) & MFI_STATE_MASK;
2516
2517 if (fw_state != MFI_STATE_FAULT) {
2518 printk(KERN_NOTICE "megaraid_sas: fw state:%x\n",
2519 fw_state);
2520 }
2521
2522 if ((fw_state == MFI_STATE_FAULT) &&
2523 (instance->disableOnlineCtrlReset == 0)) {
2524 printk(KERN_NOTICE "megaraid_sas: wait adp restart\n");
2525
2526 if ((instance->pdev->device ==
2527 PCI_DEVICE_ID_LSI_SAS1064R) ||
2528 (instance->pdev->device ==
2529 PCI_DEVICE_ID_DELL_PERC5) ||
2530 (instance->pdev->device ==
2531 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2532
2533 *instance->consumer =
2534 MEGASAS_ADPRESET_INPROG_SIGN;
2535 }
2536
2537
2538 instance->instancet->disable_intr(instance->reg_set);
2539 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
2540 instance->issuepend_done = 0;
2541
2542 atomic_set(&instance->fw_outstanding, 0);
2543 megasas_internal_reset_defer_cmds(instance);
2544
2545 printk(KERN_NOTICE "megasas: fwState=%x, stage:%d\n",
2546 fw_state, instance->adprecovery);
2547
2548 schedule_work(&instance->work_init);
2549 return IRQ_HANDLED;
2550
2551 } else {
2552 printk(KERN_NOTICE "megasas: fwstate:%x, dis_OCR=%x\n",
2553 fw_state, instance->disableOnlineCtrlReset);
2554 }
2555 }
c4a3e0a5 2556
5d018ad0 2557 tasklet_schedule(&instance->isr_tasklet);
c4a3e0a5
BS		 2558 return IRQ_HANDLED;
2559}
c4a3e0a5
BS		 2560/**
2561 * megasas_isr - isr entry point
2562 */
7d12e780 2563static irqreturn_t megasas_isr(int irq, void *devp)
c4a3e0a5 2564{
39a98554 2565 struct megasas_instance *instance;
2566 unsigned long flags;
2567 irqreturn_t rc;
2568
2569 if (atomic_read(
2570 &(((struct megasas_instance *)devp)->fw_reset_no_pci_access)))
2571 return IRQ_HANDLED;
2572
2573 instance = (struct megasas_instance *)devp;
2574
2575 spin_lock_irqsave(&instance->hba_lock, flags);
2576 rc = megasas_deplete_reply_queue(instance, DID_OK);
2577 spin_unlock_irqrestore(&instance->hba_lock, flags);
2578
2579 return rc;
c4a3e0a5
BS		 2580}
2581
2582/**
2583 * megasas_transition_to_ready - Move the FW to READY state
1341c939 2584 * @instance: Adapter soft state
c4a3e0a5
BS		 2585 *
2586 * During the initialization, FW passes can potentially be in any one of
2587 * several possible states. If the FW in operational, waiting-for-handshake
2588 * states, driver must take steps to bring it to ready state. Otherwise, it
2589 * has to wait for the ready state.
2590 */
9c915a8c 2591int
1341c939 2592megasas_transition_to_ready(struct megasas_instance* instance)
c4a3e0a5
BS		 2593{
2594 int i;
2595 u8 max_wait;
2596 u32 fw_state;
2597 u32 cur_state;
7218df69 2598 u32 abs_state, curr_abs_state;
c4a3e0a5 2599
1341c939 2600 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
c4a3e0a5 2601
e3bbff9f 2602 if (fw_state != MFI_STATE_READY)
0d49016b
AR		 2603 printk(KERN_INFO "megasas: Waiting for FW to come to ready"
2604 " state\n");
e3bbff9f 2605
c4a3e0a5
BS		 2606 while (fw_state != MFI_STATE_READY) {
2607
7218df69
YB		 2608 abs_state =
2609 instance->instancet->read_fw_status_reg(instance->reg_set);
2610
c4a3e0a5
BS		 2611 switch (fw_state) {
2612
2613 case MFI_STATE_FAULT:
2614
2615 printk(KERN_DEBUG "megasas: FW in FAULT state!!\n");
1ac515ef
AR		 2616 max_wait = MEGASAS_RESET_WAIT_TIME;
2617 cur_state = MFI_STATE_FAULT;
2618 break;
c4a3e0a5
BS		 2619
2620 case MFI_STATE_WAIT_HANDSHAKE:
2621 /*
2622 * Set the CLR bit in inbound doorbell
2623 */
0c79e681 2624 if ((instance->pdev->device ==
87911122
YB		 2625 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2626 (instance->pdev->device ==
9c915a8c
AR		 2627 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2628 (instance->pdev->device ==
2629 PCI_DEVICE_ID_LSI_FUSION)) {
87911122
YB		 2630 writel(
2631 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
9c915a8c 2632 &instance->reg_set->doorbell);
87911122
YB		 2633 } else {
2634 writel(
2635 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
2636 &instance->reg_set->inbound_doorbell);
2637 }
c4a3e0a5 2638
7218df69 2639 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 2640 cur_state = MFI_STATE_WAIT_HANDSHAKE;
2641 break;
2642
e3bbff9f 2643 case MFI_STATE_BOOT_MESSAGE_PENDING:
87911122 2644 if ((instance->pdev->device ==
9c915a8c
AR		 2645 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2646 (instance->pdev->device ==
2647 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2648 (instance->pdev->device ==
2649 PCI_DEVICE_ID_LSI_FUSION)) {
87911122 2650 writel(MFI_INIT_HOTPLUG,
9c915a8c 2651 &instance->reg_set->doorbell);
87911122
YB		 2652 } else
2653 writel(MFI_INIT_HOTPLUG,
2654 &instance->reg_set->inbound_doorbell);
e3bbff9f 2655
7218df69 2656 max_wait = MEGASAS_RESET_WAIT_TIME;
e3bbff9f
SP		 2657 cur_state = MFI_STATE_BOOT_MESSAGE_PENDING;
2658 break;
2659
c4a3e0a5
BS		 2660 case MFI_STATE_OPERATIONAL:
2661 /*
e3bbff9f 2662 * Bring it to READY state; assuming max wait 10 secs
c4a3e0a5 2663 */
b274cab7 2664 instance->instancet->disable_intr(instance->reg_set);
87911122
YB		 2665 if ((instance->pdev->device ==
2666 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2667 (instance->pdev->device ==
9c915a8c
AR		 2668 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2669 (instance->pdev->device
2670 == PCI_DEVICE_ID_LSI_FUSION)) {
87911122 2671 writel(MFI_RESET_FLAGS,
9c915a8c
AR		 2672 &instance->reg_set->doorbell);
2673 if (instance->pdev->device ==
2674 PCI_DEVICE_ID_LSI_FUSION) {
2675 for (i = 0; i < (10 * 1000); i += 20) {
2676 if (readl(
2677 &instance->
2678 reg_set->
2679 doorbell) & 1)
2680 msleep(20);
2681 else
2682 break;
2683 }
2684 }
87911122
YB		 2685 } else
2686 writel(MFI_RESET_FLAGS,
2687 &instance->reg_set->inbound_doorbell);
c4a3e0a5 2688
7218df69 2689 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 2690 cur_state = MFI_STATE_OPERATIONAL;
2691 break;
2692
2693 case MFI_STATE_UNDEFINED:
2694 /*
2695 * This state should not last for more than 2 seconds
2696 */
7218df69 2697 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 2698 cur_state = MFI_STATE_UNDEFINED;
2699 break;
2700
2701 case MFI_STATE_BB_INIT:
7218df69 2702 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 2703 cur_state = MFI_STATE_BB_INIT;
2704 break;
2705
2706 case MFI_STATE_FW_INIT:
7218df69 2707 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 2708 cur_state = MFI_STATE_FW_INIT;
2709 break;
2710
2711 case MFI_STATE_FW_INIT_2:
7218df69 2712 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 2713 cur_state = MFI_STATE_FW_INIT_2;
2714 break;
2715
2716 case MFI_STATE_DEVICE_SCAN:
7218df69 2717 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 2718 cur_state = MFI_STATE_DEVICE_SCAN;
2719 break;
2720
2721 case MFI_STATE_FLUSH_CACHE:
7218df69 2722 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 2723 cur_state = MFI_STATE_FLUSH_CACHE;
2724 break;
2725
2726 default:
2727 printk(KERN_DEBUG "megasas: Unknown state 0x%x\n",
2728 fw_state);
2729 return -ENODEV;
2730 }
2731
2732 /*
2733 * The cur_state should not last for more than max_wait secs
2734 */
2735 for (i = 0; i < (max_wait * 1000); i++) {
0d49016b 2736 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) &
1341c939 2737 MFI_STATE_MASK ;
7218df69
YB		 2738 curr_abs_state =
2739 instance->instancet->read_fw_status_reg(instance->reg_set);
c4a3e0a5 2740
7218df69 2741 if (abs_state == curr_abs_state) {
c4a3e0a5
BS		 2742 msleep(1);
2743 } else
2744 break;
2745 }
2746
2747 /*
2748 * Return error if fw_state hasn't changed after max_wait
2749 */
7218df69 2750 if (curr_abs_state == abs_state) {
c4a3e0a5
BS		 2751 printk(KERN_DEBUG "FW state [%d] hasn't changed "
2752 "in %d secs\n", fw_state, max_wait);
2753 return -ENODEV;
2754 }
39a98554 2755 }
0d49016b 2756 printk(KERN_INFO "megasas: FW now in Ready state\n");
c4a3e0a5
BS		 2757
2758 return 0;
2759}
2760
2761/**
2762 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
2763 * @instance: Adapter soft state
2764 */
2765static void megasas_teardown_frame_pool(struct megasas_instance *instance)
2766{
2767 int i;
9c915a8c 2768 u32 max_cmd = instance->max_mfi_cmds;
c4a3e0a5
BS		 2769 struct megasas_cmd *cmd;
2770
2771 if (!instance->frame_dma_pool)
2772 return;
2773
2774 /*
2775 * Return all frames to pool
2776 */
2777 for (i = 0; i < max_cmd; i++) {
2778
2779 cmd = instance->cmd_list[i];
2780
2781 if (cmd->frame)
2782 pci_pool_free(instance->frame_dma_pool, cmd->frame,
2783 cmd->frame_phys_addr);
2784
2785 if (cmd->sense)
e3bbff9f 2786 pci_pool_free(instance->sense_dma_pool, cmd->sense,
c4a3e0a5
BS		 2787 cmd->sense_phys_addr);
2788 }
2789
2790 /*
2791 * Now destroy the pool itself
2792 */
2793 pci_pool_destroy(instance->frame_dma_pool);
2794 pci_pool_destroy(instance->sense_dma_pool);
2795
2796 instance->frame_dma_pool = NULL;
2797 instance->sense_dma_pool = NULL;
2798}
2799
2800/**
2801 * megasas_create_frame_pool - Creates DMA pool for cmd frames
2802 * @instance: Adapter soft state
2803 *
2804 * Each command packet has an embedded DMA memory buffer that is used for
2805 * filling MFI frame and the SG list that immediately follows the frame. This
2806 * function creates those DMA memory buffers for each command packet by using
2807 * PCI pool facility.
2808 */
2809static int megasas_create_frame_pool(struct megasas_instance *instance)
2810{
2811 int i;
2812 u32 max_cmd;
2813 u32 sge_sz;
2814 u32 sgl_sz;
2815 u32 total_sz;
2816 u32 frame_count;
2817 struct megasas_cmd *cmd;
2818
9c915a8c 2819 max_cmd = instance->max_mfi_cmds;
c4a3e0a5
BS		 2820
2821 /*
2822 * Size of our frame is 64 bytes for MFI frame, followed by max SG
2823 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer
2824 */
2825 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
2826 sizeof(struct megasas_sge32);
2827
f4c9a131
YB		 2828 if (instance->flag_ieee) {
2829 sge_sz = sizeof(struct megasas_sge_skinny);
2830 }
2831
c4a3e0a5
BS		 2832 /*
2833 * Calculated the number of 64byte frames required for SGL
2834 */
2835 sgl_sz = sge_sz * instance->max_num_sge;
2836 frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE - 1) / MEGAMFI_FRAME_SIZE;
39a98554 2837 frame_count = 15;
c4a3e0a5
BS		 2838
2839 /*
2840 * We need one extra frame for the MFI command
2841 */
2842 frame_count++;
2843
2844 total_sz = MEGAMFI_FRAME_SIZE * frame_count;
2845 /*
2846 * Use DMA pool facility provided by PCI layer
2847 */
2848 instance->frame_dma_pool = pci_pool_create("megasas frame pool",
2849 instance->pdev, total_sz, 64,
2850 0);
2851
2852 if (!instance->frame_dma_pool) {
2853 printk(KERN_DEBUG "megasas: failed to setup frame pool\n");
2854 return -ENOMEM;
2855 }
2856
2857 instance->sense_dma_pool = pci_pool_create("megasas sense pool",
2858 instance->pdev, 128, 4, 0);
2859
2860 if (!instance->sense_dma_pool) {
2861 printk(KERN_DEBUG "megasas: failed to setup sense pool\n");
2862
2863 pci_pool_destroy(instance->frame_dma_pool);
2864 instance->frame_dma_pool = NULL;
2865
2866 return -ENOMEM;
2867 }
2868
2869 /*
2870 * Allocate and attach a frame to each of the commands in cmd_list.
2871 * By making cmd->index as the context instead of the &cmd, we can
2872 * always use 32bit context regardless of the architecture
2873 */
2874 for (i = 0; i < max_cmd; i++) {
2875
2876 cmd = instance->cmd_list[i];
2877
2878 cmd->frame = pci_pool_alloc(instance->frame_dma_pool,
2879 GFP_KERNEL, &cmd->frame_phys_addr);
2880
2881 cmd->sense = pci_pool_alloc(instance->sense_dma_pool,
2882 GFP_KERNEL, &cmd->sense_phys_addr);
2883
2884 /*
2885 * megasas_teardown_frame_pool() takes care of freeing
2886 * whatever has been allocated
2887 */
2888 if (!cmd->frame || !cmd->sense) {
2889 printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n");
2890 megasas_teardown_frame_pool(instance);
2891 return -ENOMEM;
2892 }
2893
707e09bd 2894 memset(cmd->frame, 0, total_sz);
c4a3e0a5 2895 cmd->frame->io.context = cmd->index;
7e8a75f4 2896 cmd->frame->io.pad_0 = 0;
c4a3e0a5
BS		 2897 }
2898
2899 return 0;
2900}
2901
2902/**
2903 * megasas_free_cmds - Free all the cmds in the free cmd pool
2904 * @instance: Adapter soft state
2905 */
9c915a8c 2906void megasas_free_cmds(struct megasas_instance *instance)
c4a3e0a5
BS		 2907{
2908 int i;
2909 /* First free the MFI frame pool */
2910 megasas_teardown_frame_pool(instance);
2911
2912 /* Free all the commands in the cmd_list */
9c915a8c
AR		 2913 for (i = 0; i < instance->max_mfi_cmds; i++)
2914
c4a3e0a5
BS		 2915 kfree(instance->cmd_list[i]);
2916
2917 /* Free the cmd_list buffer itself */
2918 kfree(instance->cmd_list);
2919 instance->cmd_list = NULL;
2920
2921 INIT_LIST_HEAD(&instance->cmd_pool);
2922}
2923
2924/**
2925 * megasas_alloc_cmds - Allocates the command packets
2926 * @instance: Adapter soft state
2927 *
2928 * Each command that is issued to the FW, whether IO commands from the OS or
2929 * internal commands like IOCTLs, are wrapped in local data structure called
2930 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
2931 * the FW.
2932 *
2933 * Each frame has a 32-bit field called context (tag). This context is used
2934 * to get back the megasas_cmd from the frame when a frame gets completed in
2935 * the ISR. Typically the address of the megasas_cmd itself would be used as
2936 * the context. But we wanted to keep the differences between 32 and 64 bit
2937 * systems to the mininum. We always use 32 bit integers for the context. In
2938 * this driver, the 32 bit values are the indices into an array cmd_list.
2939 * This array is used only to look up the megasas_cmd given the context. The
2940 * free commands themselves are maintained in a linked list called cmd_pool.
2941 */
9c915a8c 2942int megasas_alloc_cmds(struct megasas_instance *instance)
c4a3e0a5
BS		 2943{
2944 int i;
2945 int j;
2946 u32 max_cmd;
2947 struct megasas_cmd *cmd;
2948
9c915a8c 2949 max_cmd = instance->max_mfi_cmds;
c4a3e0a5
BS		 2950
2951 /*
2952 * instance->cmd_list is an array of struct megasas_cmd pointers.
2953 * Allocate the dynamic array first and then allocate individual
2954 * commands.
2955 */
dd00cc48 2956 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
c4a3e0a5
BS		 2957
2958 if (!instance->cmd_list) {
2959 printk(KERN_DEBUG "megasas: out of memory\n");
2960 return -ENOMEM;
2961 }
2962
9c915a8c 2963 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
c4a3e0a5
BS		 2964
2965 for (i = 0; i < max_cmd; i++) {
2966 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
2967 GFP_KERNEL);
2968
2969 if (!instance->cmd_list[i]) {
2970
2971 for (j = 0; j < i; j++)
2972 kfree(instance->cmd_list[j]);
2973
2974 kfree(instance->cmd_list);
2975 instance->cmd_list = NULL;
2976
2977 return -ENOMEM;
2978 }
2979 }
2980
2981 /*
2982 * Add all the commands to command pool (instance->cmd_pool)
2983 */
2984 for (i = 0; i < max_cmd; i++) {
2985 cmd = instance->cmd_list[i];
2986 memset(cmd, 0, sizeof(struct megasas_cmd));
2987 cmd->index = i;
39a98554 2988 cmd->scmd = NULL;
c4a3e0a5
BS		 2989 cmd->instance = instance;
2990
2991 list_add_tail(&cmd->list, &instance->cmd_pool);
2992 }
2993
2994 /*
2995 * Create a frame pool and assign one frame to each cmd
2996 */
2997 if (megasas_create_frame_pool(instance)) {
2998 printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n");
2999 megasas_free_cmds(instance);
3000 }
3001
3002 return 0;
3003}
3004
81e403ce
YB		 3005/*
3006 * megasas_get_pd_list_info - Returns FW's pd_list structure
3007 * @instance: Adapter soft state
3008 * @pd_list: pd_list structure
3009 *
3010 * Issues an internal command (DCMD) to get the FW's controller PD
3011 * list structure. This information is mainly used to find out SYSTEM
3012 * supported by the FW.
3013 */
3014static int
3015megasas_get_pd_list(struct megasas_instance *instance)
3016{
3017 int ret = 0, pd_index = 0;
3018 struct megasas_cmd *cmd;
3019 struct megasas_dcmd_frame *dcmd;
3020 struct MR_PD_LIST *ci;
3021 struct MR_PD_ADDRESS *pd_addr;
3022 dma_addr_t ci_h = 0;
3023
3024 cmd = megasas_get_cmd(instance);
3025
3026 if (!cmd) {
3027 printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n");
3028 return -ENOMEM;
3029 }
3030
3031 dcmd = &cmd->frame->dcmd;
3032
3033 ci = pci_alloc_consistent(instance->pdev,
3034 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h);
3035
3036 if (!ci) {
3037 printk(KERN_DEBUG "Failed to alloc mem for pd_list\n");
3038 megasas_return_cmd(instance, cmd);
3039 return -ENOMEM;
3040 }
3041
3042 memset(ci, 0, sizeof(*ci));
3043 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3044
3045 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
3046 dcmd->mbox.b[1] = 0;
3047 dcmd->cmd = MFI_CMD_DCMD;
3048 dcmd->cmd_status = 0xFF;
3049 dcmd->sge_count = 1;
3050 dcmd->flags = MFI_FRAME_DIR_READ;
3051 dcmd->timeout = 0;
780a3762 3052 dcmd->pad_0 = 0;
81e403ce
YB		 3053 dcmd->data_xfer_len = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST);
3054 dcmd->opcode = MR_DCMD_PD_LIST_QUERY;
3055 dcmd->sgl.sge32[0].phys_addr = ci_h;
3056 dcmd->sgl.sge32[0].length = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST);
3057
3058 if (!megasas_issue_polled(instance, cmd)) {
3059 ret = 0;
3060 } else {
3061 ret = -1;
3062 }
3063
3064 /*
3065 * the following function will get the instance PD LIST.
3066 */
3067
3068 pd_addr = ci->addr;
3069
3070 if ( ret == 0 &&
3071 (ci->count <
3072 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) {
3073
3074 memset(instance->pd_list, 0,
3075 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
3076
3077 for (pd_index = 0; pd_index < ci->count; pd_index++) {
3078
3079 instance->pd_list[pd_addr->deviceId].tid =
3080 pd_addr->deviceId;
3081 instance->pd_list[pd_addr->deviceId].driveType =
3082 pd_addr->scsiDevType;
3083 instance->pd_list[pd_addr->deviceId].driveState =
3084 MR_PD_STATE_SYSTEM;
3085 pd_addr++;
3086 }
3087 }
3088
3089 pci_free_consistent(instance->pdev,
3090 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
3091 ci, ci_h);
3092 megasas_return_cmd(instance, cmd);
3093
3094 return ret;
3095}
3096
bdc6fb8d
YB		 3097/*
3098 * megasas_get_ld_list_info - Returns FW's ld_list structure
3099 * @instance: Adapter soft state
3100 * @ld_list: ld_list structure
3101 *
3102 * Issues an internal command (DCMD) to get the FW's controller PD
3103 * list structure. This information is mainly used to find out SYSTEM
3104 * supported by the FW.
3105 */
3106static int
3107megasas_get_ld_list(struct megasas_instance *instance)
3108{
3109 int ret = 0, ld_index = 0, ids = 0;
3110 struct megasas_cmd *cmd;
3111 struct megasas_dcmd_frame *dcmd;
3112 struct MR_LD_LIST *ci;
3113 dma_addr_t ci_h = 0;
3114
3115 cmd = megasas_get_cmd(instance);
3116
3117 if (!cmd) {
3118 printk(KERN_DEBUG "megasas_get_ld_list: Failed to get cmd\n");
3119 return -ENOMEM;
3120 }
3121
3122 dcmd = &cmd->frame->dcmd;
3123
3124 ci = pci_alloc_consistent(instance->pdev,
3125 sizeof(struct MR_LD_LIST),
3126 &ci_h);
3127
3128 if (!ci) {
3129 printk(KERN_DEBUG "Failed to alloc mem in get_ld_list\n");
3130 megasas_return_cmd(instance, cmd);
3131 return -ENOMEM;
3132 }
3133
3134 memset(ci, 0, sizeof(*ci));
3135 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3136
3137 dcmd->cmd = MFI_CMD_DCMD;
3138 dcmd->cmd_status = 0xFF;
3139 dcmd->sge_count = 1;
3140 dcmd->flags = MFI_FRAME_DIR_READ;
3141 dcmd->timeout = 0;
3142 dcmd->data_xfer_len = sizeof(struct MR_LD_LIST);
3143 dcmd->opcode = MR_DCMD_LD_GET_LIST;
3144 dcmd->sgl.sge32[0].phys_addr = ci_h;
3145 dcmd->sgl.sge32[0].length = sizeof(struct MR_LD_LIST);
3146 dcmd->pad_0 = 0;
3147
3148 if (!megasas_issue_polled(instance, cmd)) {
3149 ret = 0;
3150 } else {
3151 ret = -1;
3152 }
3153
3154 /* the following function will get the instance PD LIST */
3155
39a98554 3156 if ((ret == 0) && (ci->ldCount <= MAX_LOGICAL_DRIVES)) {
bdc6fb8d
YB		 3157 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
3158
3159 for (ld_index = 0; ld_index < ci->ldCount; ld_index++) {
3160 if (ci->ldList[ld_index].state != 0) {
3161 ids = ci->ldList[ld_index].ref.targetId;
3162 instance->ld_ids[ids] =
3163 ci->ldList[ld_index].ref.targetId;
3164 }
3165 }
3166 }
3167
3168 pci_free_consistent(instance->pdev,
3169 sizeof(struct MR_LD_LIST),
3170 ci,
3171 ci_h);
3172
3173 megasas_return_cmd(instance, cmd);
3174 return ret;
3175}
3176
c4a3e0a5
BS		 3177/**
3178 * megasas_get_controller_info - Returns FW's controller structure
3179 * @instance: Adapter soft state
3180 * @ctrl_info: Controller information structure
3181 *
3182 * Issues an internal command (DCMD) to get the FW's controller structure.
3183 * This information is mainly used to find out the maximum IO transfer per
3184 * command supported by the FW.
3185 */
3186static int
3187megasas_get_ctrl_info(struct megasas_instance *instance,
3188 struct megasas_ctrl_info *ctrl_info)
3189{
3190 int ret = 0;
3191 struct megasas_cmd *cmd;
3192 struct megasas_dcmd_frame *dcmd;
3193 struct megasas_ctrl_info *ci;
3194 dma_addr_t ci_h = 0;
3195
3196 cmd = megasas_get_cmd(instance);
3197
3198 if (!cmd) {
3199 printk(KERN_DEBUG "megasas: Failed to get a free cmd\n");
3200 return -ENOMEM;
3201 }
3202
3203 dcmd = &cmd->frame->dcmd;
3204
3205 ci = pci_alloc_consistent(instance->pdev,
3206 sizeof(struct megasas_ctrl_info), &ci_h);
3207
3208 if (!ci) {
3209 printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n");
3210 megasas_return_cmd(instance, cmd);
3211 return -ENOMEM;
3212 }
3213
3214 memset(ci, 0, sizeof(*ci));
3215 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3216
3217 dcmd->cmd = MFI_CMD_DCMD;
3218 dcmd->cmd_status = 0xFF;
3219 dcmd->sge_count = 1;
3220 dcmd->flags = MFI_FRAME_DIR_READ;
3221 dcmd->timeout = 0;
780a3762 3222 dcmd->pad_0 = 0;
c4a3e0a5
BS		 3223 dcmd->data_xfer_len = sizeof(struct megasas_ctrl_info);
3224 dcmd->opcode = MR_DCMD_CTRL_GET_INFO;
3225 dcmd->sgl.sge32[0].phys_addr = ci_h;
3226 dcmd->sgl.sge32[0].length = sizeof(struct megasas_ctrl_info);
3227
3228 if (!megasas_issue_polled(instance, cmd)) {
3229 ret = 0;
3230 memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info));
3231 } else {
3232 ret = -1;
3233 }
3234
3235 pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info),
3236 ci, ci_h);
3237
3238 megasas_return_cmd(instance, cmd);
3239 return ret;
3240}
3241
31ea7088 3242/**
3243 * megasas_issue_init_mfi - Initializes the FW
3244 * @instance: Adapter soft state
3245 *
3246 * Issues the INIT MFI cmd
3247 */
3248static int
3249megasas_issue_init_mfi(struct megasas_instance *instance)
3250{
3251 u32 context;
3252
3253 struct megasas_cmd *cmd;
3254
3255 struct megasas_init_frame *init_frame;
3256 struct megasas_init_queue_info *initq_info;
3257 dma_addr_t init_frame_h;
3258 dma_addr_t initq_info_h;
3259
3260 /*
3261 * Prepare a init frame. Note the init frame points to queue info
3262 * structure. Each frame has SGL allocated after first 64 bytes. For
3263 * this frame - since we don't need any SGL - we use SGL's space as
3264 * queue info structure
3265 *
3266 * We will not get a NULL command below. We just created the pool.
3267 */
3268 cmd = megasas_get_cmd(instance);
3269
3270 init_frame = (struct megasas_init_frame *)cmd->frame;
3271 initq_info = (struct megasas_init_queue_info *)
3272 ((unsigned long)init_frame + 64);
3273
3274 init_frame_h = cmd->frame_phys_addr;
3275 initq_info_h = init_frame_h + 64;
3276
3277 context = init_frame->context;
3278 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
3279 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
3280 init_frame->context = context;
3281
3282 initq_info->reply_queue_entries = instance->max_fw_cmds + 1;
3283 initq_info->reply_queue_start_phys_addr_lo = instance->reply_queue_h;
3284
3285 initq_info->producer_index_phys_addr_lo = instance->producer_h;
3286 initq_info->consumer_index_phys_addr_lo = instance->consumer_h;
3287
3288 init_frame->cmd = MFI_CMD_INIT;
3289 init_frame->cmd_status = 0xFF;
3290 init_frame->queue_info_new_phys_addr_lo = initq_info_h;
3291
3292 init_frame->data_xfer_len = sizeof(struct megasas_init_queue_info);
3293
3294 /*
3295 * disable the intr before firing the init frame to FW
3296 */
3297 instance->instancet->disable_intr(instance->reg_set);
3298
3299 /*
3300 * Issue the init frame in polled mode
3301 */
3302
3303 if (megasas_issue_polled(instance, cmd)) {
3304 printk(KERN_ERR "megasas: Failed to init firmware\n");
3305 megasas_return_cmd(instance, cmd);
3306 goto fail_fw_init;
3307 }
3308
3309 megasas_return_cmd(instance, cmd);
3310
3311 return 0;
3312
3313fail_fw_init:
3314 return -EINVAL;
3315}
3316
ad84db2e 3317/**
3318 * megasas_start_timer - Initializes a timer object
3319 * @instance: Adapter soft state
3320 * @timer: timer object to be initialized
3321 * @fn: timer function
3322 * @interval: time interval between timer function call
3323 */
3324static inline void
3325megasas_start_timer(struct megasas_instance *instance,
3326 struct timer_list *timer,
3327 void *fn, unsigned long interval)
3328{
3329 init_timer(timer);
3330 timer->expires = jiffies + interval;
3331 timer->data = (unsigned long)instance;
3332 timer->function = fn;
3333 add_timer(timer);
3334}
3335
3336/**
3337 * megasas_io_completion_timer - Timer fn
3338 * @instance_addr: Address of adapter soft state
3339 *
3340 * Schedules tasklet for cmd completion
3341 * if poll_mode_io is set
3342 */
3343static void
3344megasas_io_completion_timer(unsigned long instance_addr)
3345{
3346 struct megasas_instance *instance =
3347 (struct megasas_instance *)instance_addr;
3348
3349 if (atomic_read(&instance->fw_outstanding))
3350 tasklet_schedule(&instance->isr_tasklet);
3351
3352 /* Restart timer */
3353 if (poll_mode_io)
3354 mod_timer(&instance->io_completion_timer,
3355 jiffies + MEGASAS_COMPLETION_TIMER_INTERVAL);
3356}
3357
cd50ba8e
AR		 3358static u32
3359megasas_init_adapter_mfi(struct megasas_instance *instance)
c4a3e0a5 3360{
cd50ba8e 3361 struct megasas_register_set __iomem *reg_set;
c4a3e0a5
BS		 3362 u32 context_sz;
3363 u32 reply_q_sz;
c4a3e0a5
BS		 3364
3365 reg_set = instance->reg_set;
3366
c4a3e0a5
BS		 3367 /*
3368 * Get various operational parameters from status register
3369 */
1341c939 3370 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
e3bbff9f
SP		 3371 /*
3372 * Reduce the max supported cmds by 1. This is to ensure that the
3373 * reply_q_sz (1 more than the max cmd that driver may send)
3374 * does not exceed max cmds that the FW can support
3375 */
3376 instance->max_fw_cmds = instance->max_fw_cmds-1;
9c915a8c 3377 instance->max_mfi_cmds = instance->max_fw_cmds;
0d49016b 3378 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >>
1341c939 3379 0x10;
c4a3e0a5
BS		 3380 /*
3381 * Create a pool of commands
3382 */
3383 if (megasas_alloc_cmds(instance))
3384 goto fail_alloc_cmds;
3385
3386 /*
3387 * Allocate memory for reply queue. Length of reply queue should
3388 * be _one_ more than the maximum commands handled by the firmware.
3389 *
3390 * Note: When FW completes commands, it places corresponding contex
3391 * values in this circular reply queue. This circular queue is a fairly
3392 * typical producer-consumer queue. FW is the producer (of completed
3393 * commands) and the driver is the consumer.
3394 */
3395 context_sz = sizeof(u32);
3396 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
3397
3398 instance->reply_queue = pci_alloc_consistent(instance->pdev,
3399 reply_q_sz,
3400 &instance->reply_queue_h);
3401
3402 if (!instance->reply_queue) {
3403 printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n");
3404 goto fail_reply_queue;
3405 }
3406
31ea7088 3407 if (megasas_issue_init_mfi(instance))
c4a3e0a5 3408 goto fail_fw_init;
c4a3e0a5 3409
39a98554 3410 instance->fw_support_ieee = 0;
3411 instance->fw_support_ieee =
3412 (instance->instancet->read_fw_status_reg(reg_set) &
3413 0x04000000);
3414
3415 printk(KERN_NOTICE "megasas_init_mfi: fw_support_ieee=%d",
3416 instance->fw_support_ieee);
3417
3418 if (instance->fw_support_ieee)
3419 instance->flag_ieee = 1;
3420
cd50ba8e
AR		 3421 return 0;
3422
3423fail_fw_init:
3424
3425 pci_free_consistent(instance->pdev, reply_q_sz,
3426 instance->reply_queue, instance->reply_queue_h);
3427fail_reply_queue:
3428 megasas_free_cmds(instance);
3429
3430fail_alloc_cmds:
cd50ba8e
AR		 3431 return 1;
3432}
3433
3434/**
3435 * megasas_init_fw - Initializes the FW
3436 * @instance: Adapter soft state
3437 *
3438 * This is the main function for initializing firmware
3439 */
3440
3441static int megasas_init_fw(struct megasas_instance *instance)
3442{
3443 u32 max_sectors_1;
3444 u32 max_sectors_2;
3445 u32 tmp_sectors;
3446 struct megasas_register_set __iomem *reg_set;
3447 struct megasas_ctrl_info *ctrl_info;
3448 unsigned long bar_list;
3449
3450 /* Find first memory bar */
3451 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
3452 instance->bar = find_first_bit(&bar_list, sizeof(unsigned long));
3453 instance->base_addr = pci_resource_start(instance->pdev, instance->bar);
3454 if (pci_request_selected_regions(instance->pdev, instance->bar,
3455 "megasas: LSI")) {
3456 printk(KERN_DEBUG "megasas: IO memory region busy!\n");
3457 return -EBUSY;
3458 }
3459
3460 instance->reg_set = ioremap_nocache(instance->base_addr, 8192);
3461
3462 if (!instance->reg_set) {
3463 printk(KERN_DEBUG "megasas: Failed to map IO mem\n");
3464 goto fail_ioremap;
3465 }
3466
3467 reg_set = instance->reg_set;
3468
3469 switch (instance->pdev->device) {
9c915a8c
AR		 3470 case PCI_DEVICE_ID_LSI_FUSION:
3471 instance->instancet = &megasas_instance_template_fusion;
3472 break;
cd50ba8e
AR		 3473 case PCI_DEVICE_ID_LSI_SAS1078R:
3474 case PCI_DEVICE_ID_LSI_SAS1078DE:
3475 instance->instancet = &megasas_instance_template_ppc;
3476 break;
3477 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
3478 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
3479 instance->instancet = &megasas_instance_template_gen2;
3480 break;
3481 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
3482 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
3483 instance->instancet = &megasas_instance_template_skinny;
3484 break;
3485 case PCI_DEVICE_ID_LSI_SAS1064R:
3486 case PCI_DEVICE_ID_DELL_PERC5:
3487 default:
3488 instance->instancet = &megasas_instance_template_xscale;
3489 break;
3490 }
3491
3492 /*
3493 * We expect the FW state to be READY
3494 */
3495 if (megasas_transition_to_ready(instance))
3496 goto fail_ready_state;
3497
3498 /* Get operational params, sge flags, send init cmd to controller */
3499 if (instance->instancet->init_adapter(instance))
eb1b1237 3500 goto fail_init_adapter;
cd50ba8e
AR		 3501
3502 printk(KERN_ERR "megasas: INIT adapter done\n");
3503
39a98554 3504 /** for passthrough
3505 * the following function will get the PD LIST.
3506 */
3507
81e403ce
YB		 3508 memset(instance->pd_list, 0 ,
3509 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
3510 megasas_get_pd_list(instance);
3511
bdc6fb8d
YB		 3512 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
3513 megasas_get_ld_list(instance);
3514
c4a3e0a5
BS		 3515 ctrl_info = kmalloc(sizeof(struct megasas_ctrl_info), GFP_KERNEL);
3516
3517 /*
3518 * Compute the max allowed sectors per IO: The controller info has two
3519 * limits on max sectors. Driver should use the minimum of these two.
3520 *
3521 * 1 << stripe_sz_ops.min = max sectors per strip
3522 *
3523 * Note that older firmwares ( < FW ver 30) didn't report information
3524 * to calculate max_sectors_1. So the number ended up as zero always.
3525 */
14faea9f 3526 tmp_sectors = 0;
c4a3e0a5
BS		 3527 if (ctrl_info && !megasas_get_ctrl_info(instance, ctrl_info)) {
3528
3529 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
3530 ctrl_info->max_strips_per_io;
3531 max_sectors_2 = ctrl_info->max_request_size;
3532
14faea9f 3533 tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2);
39a98554 3534 instance->disableOnlineCtrlReset =
3535 ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset;
14faea9f 3536 }
3537
3538 instance->max_sectors_per_req = instance->max_num_sge *
3539 PAGE_SIZE / 512;
3540 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
3541 instance->max_sectors_per_req = tmp_sectors;
c4a3e0a5
BS		 3542
3543 kfree(ctrl_info);
3544
5d018ad0
SP		 3545 /*
3546 * Setup tasklet for cmd completion
3547 */
3548
f86c5424 3549 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
ad84db2e 3550 (unsigned long)instance);
3551
3552 /* Initialize the cmd completion timer */
3553 if (poll_mode_io)
3554 megasas_start_timer(instance, &instance->io_completion_timer,
3555 megasas_io_completion_timer,
3556 MEGASAS_COMPLETION_TIMER_INTERVAL);
c4a3e0a5
BS		 3557 return 0;
3558
eb1b1237 3559fail_init_adapter:
cd50ba8e 3560fail_ready_state:
c4a3e0a5
BS		 3561 iounmap(instance->reg_set);
3562
3563 fail_ioremap:
b6d5d880 3564 pci_release_selected_regions(instance->pdev, instance->bar);
c4a3e0a5
BS		 3565
3566 return -EINVAL;
3567}
3568
3569/**
3570 * megasas_release_mfi - Reverses the FW initialization
3571 * @intance: Adapter soft state
3572 */
3573static void megasas_release_mfi(struct megasas_instance *instance)
3574{
9c915a8c 3575 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
c4a3e0a5 3576
9c915a8c
AR		 3577 if (instance->reply_queue)
3578 pci_free_consistent(instance->pdev, reply_q_sz,
c4a3e0a5
BS		 3579 instance->reply_queue, instance->reply_queue_h);
3580
3581 megasas_free_cmds(instance);
3582
3583 iounmap(instance->reg_set);
3584
b6d5d880 3585 pci_release_selected_regions(instance->pdev, instance->bar);
c4a3e0a5
BS		 3586}
3587
3588/**
3589 * megasas_get_seq_num - Gets latest event sequence numbers
3590 * @instance: Adapter soft state
3591 * @eli: FW event log sequence numbers information
3592 *
3593 * FW maintains a log of all events in a non-volatile area. Upper layers would
3594 * usually find out the latest sequence number of the events, the seq number at
3595 * the boot etc. They would "read" all the events below the latest seq number
3596 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
3597 * number), they would subsribe to AEN (asynchronous event notification) and
3598 * wait for the events to happen.
3599 */
3600static int
3601megasas_get_seq_num(struct megasas_instance *instance,
3602 struct megasas_evt_log_info *eli)
3603{
3604 struct megasas_cmd *cmd;
3605 struct megasas_dcmd_frame *dcmd;
3606 struct megasas_evt_log_info *el_info;
3607 dma_addr_t el_info_h = 0;
3608
3609 cmd = megasas_get_cmd(instance);
3610
3611 if (!cmd) {
3612 return -ENOMEM;
3613 }
3614
3615 dcmd = &cmd->frame->dcmd;
3616 el_info = pci_alloc_consistent(instance->pdev,
3617 sizeof(struct megasas_evt_log_info),
3618 &el_info_h);
3619
3620 if (!el_info) {
3621 megasas_return_cmd(instance, cmd);
3622 return -ENOMEM;
3623 }
3624
3625 memset(el_info, 0, sizeof(*el_info));
3626 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3627
3628 dcmd->cmd = MFI_CMD_DCMD;
3629 dcmd->cmd_status = 0x0;
3630 dcmd->sge_count = 1;
3631 dcmd->flags = MFI_FRAME_DIR_READ;
3632 dcmd->timeout = 0;
780a3762 3633 dcmd->pad_0 = 0;
c4a3e0a5
BS		 3634 dcmd->data_xfer_len = sizeof(struct megasas_evt_log_info);
3635 dcmd->opcode = MR_DCMD_CTRL_EVENT_GET_INFO;
3636 dcmd->sgl.sge32[0].phys_addr = el_info_h;
3637 dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_log_info);
3638
3639 megasas_issue_blocked_cmd(instance, cmd);
3640
3641 /*
3642 * Copy the data back into callers buffer
3643 */
3644 memcpy(eli, el_info, sizeof(struct megasas_evt_log_info));
3645
3646 pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info),
3647 el_info, el_info_h);
3648
3649 megasas_return_cmd(instance, cmd);
3650
3651 return 0;
3652}
3653
3654/**
3655 * megasas_register_aen - Registers for asynchronous event notification
3656 * @instance: Adapter soft state
3657 * @seq_num: The starting sequence number
3658 * @class_locale: Class of the event
3659 *
3660 * This function subscribes for AEN for events beyond the @seq_num. It requests
3661 * to be notified if and only if the event is of type @class_locale
3662 */
3663static int
3664megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
3665 u32 class_locale_word)
3666{
3667 int ret_val;
3668 struct megasas_cmd *cmd;
3669 struct megasas_dcmd_frame *dcmd;
3670 union megasas_evt_class_locale curr_aen;
3671 union megasas_evt_class_locale prev_aen;
3672
3673 /*
3674 * If there an AEN pending already (aen_cmd), check if the
3675 * class_locale of that pending AEN is inclusive of the new
3676 * AEN request we currently have. If it is, then we don't have
3677 * to do anything. In other words, whichever events the current
3678 * AEN request is subscribing to, have already been subscribed
3679 * to.
3680 *
3681 * If the old_cmd is _not_ inclusive, then we have to abort
3682 * that command, form a class_locale that is superset of both
3683 * old and current and re-issue to the FW
3684 */
3685
3686 curr_aen.word = class_locale_word;
3687
3688 if (instance->aen_cmd) {
3689
3690 prev_aen.word = instance->aen_cmd->frame->dcmd.mbox.w[1];
3691
3692 /*
3693 * A class whose enum value is smaller is inclusive of all
3694 * higher values. If a PROGRESS (= -1) was previously
3695 * registered, then a new registration requests for higher
3696 * classes need not be sent to FW. They are automatically
3697 * included.
3698 *
3699 * Locale numbers don't have such hierarchy. They are bitmap
3700 * values
3701 */
3702 if ((prev_aen.members.class <= curr_aen.members.class) &&
3703 !((prev_aen.members.locale & curr_aen.members.locale) ^
3704 curr_aen.members.locale)) {
3705 /*
3706 * Previously issued event registration includes
3707 * current request. Nothing to do.
3708 */
3709 return 0;
3710 } else {
3711 curr_aen.members.locale |= prev_aen.members.locale;
3712
3713 if (prev_aen.members.class < curr_aen.members.class)
3714 curr_aen.members.class = prev_aen.members.class;
3715
3716 instance->aen_cmd->abort_aen = 1;
3717 ret_val = megasas_issue_blocked_abort_cmd(instance,
3718 instance->
3719 aen_cmd);
3720
3721 if (ret_val) {
3722 printk(KERN_DEBUG "megasas: Failed to abort "
3723 "previous AEN command\n");
3724 return ret_val;
3725 }
3726 }
3727 }
3728
3729 cmd = megasas_get_cmd(instance);
3730
3731 if (!cmd)
3732 return -ENOMEM;
3733
3734 dcmd = &cmd->frame->dcmd;
3735
3736 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
3737
3738 /*
3739 * Prepare DCMD for aen registration
3740 */
3741 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3742
3743 dcmd->cmd = MFI_CMD_DCMD;
3744 dcmd->cmd_status = 0x0;
3745 dcmd->sge_count = 1;
3746 dcmd->flags = MFI_FRAME_DIR_READ;
3747 dcmd->timeout = 0;
780a3762 3748 dcmd->pad_0 = 0;
39a98554 3749 instance->last_seq_num = seq_num;
c4a3e0a5
BS		 3750 dcmd->data_xfer_len = sizeof(struct megasas_evt_detail);
3751 dcmd->opcode = MR_DCMD_CTRL_EVENT_WAIT;
3752 dcmd->mbox.w[0] = seq_num;
3753 dcmd->mbox.w[1] = curr_aen.word;
3754 dcmd->sgl.sge32[0].phys_addr = (u32) instance->evt_detail_h;
3755 dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_detail);
3756
f4c9a131
YB		 3757 if (instance->aen_cmd != NULL) {
3758 megasas_return_cmd(instance, cmd);
3759 return 0;
3760 }
3761
c4a3e0a5
BS		 3762 /*
3763 * Store reference to the cmd used to register for AEN. When an
3764 * application wants us to register for AEN, we have to abort this
3765 * cmd and re-register with a new EVENT LOCALE supplied by that app
3766 */
3767 instance->aen_cmd = cmd;
3768
3769 /*
3770 * Issue the aen registration frame
3771 */
9c915a8c 3772 instance->instancet->issue_dcmd(instance, cmd);
c4a3e0a5
BS		 3773
3774 return 0;
3775}
3776
3777/**
3778 * megasas_start_aen - Subscribes to AEN during driver load time
3779 * @instance: Adapter soft state
3780 */
3781static int megasas_start_aen(struct megasas_instance *instance)
3782{
3783 struct megasas_evt_log_info eli;
3784 union megasas_evt_class_locale class_locale;
3785
3786 /*
3787 * Get the latest sequence number from FW
3788 */
3789 memset(&eli, 0, sizeof(eli));
3790
3791 if (megasas_get_seq_num(instance, &eli))
3792 return -1;
3793
3794 /*
3795 * Register AEN with FW for latest sequence number plus 1
3796 */
3797 class_locale.members.reserved = 0;
3798 class_locale.members.locale = MR_EVT_LOCALE_ALL;
3799 class_locale.members.class = MR_EVT_CLASS_DEBUG;
3800
3801 return megasas_register_aen(instance, eli.newest_seq_num + 1,
3802 class_locale.word);
3803}
3804
3805/**
3806 * megasas_io_attach - Attaches this driver to SCSI mid-layer
3807 * @instance: Adapter soft state
3808 */
3809static int megasas_io_attach(struct megasas_instance *instance)
3810{
3811 struct Scsi_Host *host = instance->host;
3812
3813 /*
3814 * Export parameters required by SCSI mid-layer
3815 */
3816 host->irq = instance->pdev->irq;
3817 host->unique_id = instance->unique_id;
7bebf5c7
YB		 3818 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3819 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
3820 host->can_queue =
3821 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
3822 } else
3823 host->can_queue =
3824 instance->max_fw_cmds - MEGASAS_INT_CMDS;
c4a3e0a5
BS		 3825 host->this_id = instance->init_id;
3826 host->sg_tablesize = instance->max_num_sge;
1fd10685
YB		 3827 /*
3828 * Check if the module parameter value for max_sectors can be used
3829 */
3830 if (max_sectors && max_sectors < instance->max_sectors_per_req)
3831 instance->max_sectors_per_req = max_sectors;
3832 else {
3833 if (max_sectors) {
3834 if (((instance->pdev->device ==
3835 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
3836 (instance->pdev->device ==
3837 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
3838 (max_sectors <= MEGASAS_MAX_SECTORS)) {
3839 instance->max_sectors_per_req = max_sectors;
3840 } else {
3841 printk(KERN_INFO "megasas: max_sectors should be > 0"
3842 "and <= %d (or < 1MB for GEN2 controller)\n",
3843 instance->max_sectors_per_req);
3844 }
3845 }
3846 }
3847
c4a3e0a5 3848 host->max_sectors = instance->max_sectors_per_req;
9c915a8c 3849 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
c4a3e0a5
BS		 3850 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
3851 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
3852 host->max_lun = MEGASAS_MAX_LUN;
122da302 3853 host->max_cmd_len = 16;
c4a3e0a5 3854
9c915a8c
AR		 3855 /* Fusion only supports host reset */
3856 if (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) {
3857 host->hostt->eh_device_reset_handler = NULL;
3858 host->hostt->eh_bus_reset_handler = NULL;
3859 }
3860
c4a3e0a5
BS		 3861 /*
3862 * Notify the mid-layer about the new controller
3863 */
3864 if (scsi_add_host(host, &instance->pdev->dev)) {
3865 printk(KERN_DEBUG "megasas: scsi_add_host failed\n");
3866 return -ENODEV;
3867 }
3868
3869 /*
3870 * Trigger SCSI to scan our drives
3871 */
3872 scsi_scan_host(host);
3873 return 0;
3874}
3875
31ea7088 3876static int
3877megasas_set_dma_mask(struct pci_dev *pdev)
3878{
3879 /*
3880 * All our contollers are capable of performing 64-bit DMA
3881 */
3882 if (IS_DMA64) {
6a35528a 3883 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
31ea7088 3884
284901a9 3885 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
31ea7088 3886 goto fail_set_dma_mask;
3887 }
3888 } else {
284901a9 3889 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
31ea7088 3890 goto fail_set_dma_mask;
3891 }
3892 return 0;
3893
3894fail_set_dma_mask:
3895 return 1;
3896}
3897
c4a3e0a5
BS		 3898/**
3899 * megasas_probe_one - PCI hotplug entry point
3900 * @pdev: PCI device structure
0d49016b 3901 * @id: PCI ids of supported hotplugged adapter
c4a3e0a5
BS		 3902 */
3903static int __devinit
3904megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
3905{
66192dfe 3906 int rval, pos;
c4a3e0a5
BS		 3907 struct Scsi_Host *host;
3908 struct megasas_instance *instance;
66192dfe
AR		 3909 u16 control = 0;
3910
3911 /* Reset MSI-X in the kdump kernel */
3912 if (reset_devices) {
3913 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
3914 if (pos) {
3915 pci_read_config_word(pdev, msi_control_reg(pos),
3916 &control);
3917 if (control & PCI_MSIX_FLAGS_ENABLE) {
3918 dev_info(&pdev->dev, "resetting MSI-X\n");
3919 pci_write_config_word(pdev,
3920 msi_control_reg(pos),
3921 control &
3922 ~PCI_MSIX_FLAGS_ENABLE);
3923 }
3924 }
3925 }
c4a3e0a5
BS		 3926
3927 /*
3928 * Announce PCI information
3929 */
3930 printk(KERN_INFO "megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ",
3931 pdev->vendor, pdev->device, pdev->subsystem_vendor,
3932 pdev->subsystem_device);
3933
3934 printk("bus %d:slot %d:func %d\n",
3935 pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));
3936
3937 /*
3938 * PCI prepping: enable device set bus mastering and dma mask
3939 */
aeab3fd7 3940 rval = pci_enable_device_mem(pdev);
c4a3e0a5
BS		 3941
3942 if (rval) {
3943 return rval;
3944 }
3945
3946 pci_set_master(pdev);
3947
31ea7088 3948 if (megasas_set_dma_mask(pdev))
3949 goto fail_set_dma_mask;
c4a3e0a5
BS		 3950
3951 host = scsi_host_alloc(&megasas_template,
3952 sizeof(struct megasas_instance));
3953
3954 if (!host) {
3955 printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n");
3956 goto fail_alloc_instance;
3957 }
3958
3959 instance = (struct megasas_instance *)host->hostdata;
3960 memset(instance, 0, sizeof(*instance));
39a98554 3961 atomic_set( &instance->fw_reset_no_pci_access, 0 );
9c915a8c 3962 instance->pdev = pdev;
c4a3e0a5 3963
9c915a8c
AR		 3964 switch (instance->pdev->device) {
3965 case PCI_DEVICE_ID_LSI_FUSION:
3966 {
3967 struct fusion_context *fusion;
3968
3969 instance->ctrl_context =
3970 kzalloc(sizeof(struct fusion_context), GFP_KERNEL);
3971 if (!instance->ctrl_context) {
3972 printk(KERN_DEBUG "megasas: Failed to allocate "
3973 "memory for Fusion context info\n");
3974 goto fail_alloc_dma_buf;
3975 }
3976 fusion = instance->ctrl_context;
3977 INIT_LIST_HEAD(&fusion->cmd_pool);
3978 spin_lock_init(&fusion->cmd_pool_lock);
3979 }
3980 break;
3981 default: /* For all other supported controllers */
3982
3983 instance->producer =
3984 pci_alloc_consistent(pdev, sizeof(u32),
3985 &instance->producer_h);
3986 instance->consumer =
3987 pci_alloc_consistent(pdev, sizeof(u32),
3988 &instance->consumer_h);
3989
3990 if (!instance->producer || !instance->consumer) {
3991 printk(KERN_DEBUG "megasas: Failed to allocate"
3992 "memory for producer, consumer\n");
3993 goto fail_alloc_dma_buf;
3994 }
c4a3e0a5 3995
9c915a8c
AR		 3996 *instance->producer = 0;
3997 *instance->consumer = 0;
3998 break;
c4a3e0a5
BS		 3999 }
4000
c3518837 4001 megasas_poll_wait_aen = 0;
f4c9a131 4002 instance->flag_ieee = 0;
7e8a75f4 4003 instance->ev = NULL;
39a98554 4004 instance->issuepend_done = 1;
4005 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
4006 megasas_poll_wait_aen = 0;
c4a3e0a5
BS		 4007
4008 instance->evt_detail = pci_alloc_consistent(pdev,
4009 sizeof(struct
4010 megasas_evt_detail),
4011 &instance->evt_detail_h);
4012
4013 if (!instance->evt_detail) {
4014 printk(KERN_DEBUG "megasas: Failed to allocate memory for "
4015 "event detail structure\n");
4016 goto fail_alloc_dma_buf;
4017 }
4018
4019 /*
4020 * Initialize locks and queues
4021 */
4022 INIT_LIST_HEAD(&instance->cmd_pool);
39a98554 4023 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
c4a3e0a5 4024
e4a082c7
SP		 4025 atomic_set(&instance->fw_outstanding,0);
4026
c4a3e0a5
BS		 4027 init_waitqueue_head(&instance->int_cmd_wait_q);
4028 init_waitqueue_head(&instance->abort_cmd_wait_q);
4029
4030 spin_lock_init(&instance->cmd_pool_lock);
39a98554 4031 spin_lock_init(&instance->hba_lock);
7343eb65 4032 spin_lock_init(&instance->completion_lock);
c3518837 4033 spin_lock_init(&poll_aen_lock);
c4a3e0a5 4034
e5a69e27 4035 mutex_init(&instance->aen_mutex);
9c915a8c 4036 mutex_init(&instance->reset_mutex);
c4a3e0a5
BS		 4037
4038 /*
4039 * Initialize PCI related and misc parameters
4040 */
c4a3e0a5
BS		 4041 instance->host = host;
4042 instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
4043 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
4044
7bebf5c7
YB		 4045 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4046 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
f4c9a131 4047 instance->flag_ieee = 1;
7bebf5c7
YB		 4048 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
4049 } else
4050 sema_init(&instance->ioctl_sem, MEGASAS_INT_CMDS);
4051
658dcedb 4052 megasas_dbg_lvl = 0;
05e9ebbe 4053 instance->flag = 0;
0c79e681 4054 instance->unload = 1;
05e9ebbe 4055 instance->last_time = 0;
39a98554 4056 instance->disableOnlineCtrlReset = 1;
4057
9c915a8c
AR		 4058 if (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION)
4059 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
4060 else
4061 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
658dcedb 4062
80d9da98
AR		 4063 /* Try to enable MSI-X */
4064 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_SAS1078R) &&
4065 (instance->pdev->device != PCI_DEVICE_ID_LSI_SAS1078DE) &&
4066 (instance->pdev->device != PCI_DEVICE_ID_LSI_VERDE_ZCR) &&
4067 !msix_disable && !pci_enable_msix(instance->pdev,
4068 &instance->msixentry, 1))
4069 instance->msi_flag = 1;
4070
0a77066a
AR		 4071 /*
4072 * Initialize MFI Firmware
4073 */
4074 if (megasas_init_fw(instance))
4075 goto fail_init_mfi;
4076
c4a3e0a5
BS		 4077 /*
4078 * Register IRQ
4079 */
80d9da98 4080 if (request_irq(instance->msi_flag ? instance->msixentry.vector :
cd50ba8e 4081 pdev->irq, instance->instancet->service_isr,
80d9da98 4082 IRQF_SHARED, "megasas", instance)) {
c4a3e0a5
BS		 4083 printk(KERN_DEBUG "megasas: Failed to register IRQ\n");
4084 goto fail_irq;
4085 }
4086
1341c939 4087 instance->instancet->enable_intr(instance->reg_set);
c4a3e0a5
BS		 4088
4089 /*
4090 * Store instance in PCI softstate
4091 */
4092 pci_set_drvdata(pdev, instance);
4093
4094 /*
4095 * Add this controller to megasas_mgmt_info structure so that it
4096 * can be exported to management applications
4097 */
4098 megasas_mgmt_info.count++;
4099 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
4100 megasas_mgmt_info.max_index++;
4101
4102 /*
4103 * Initiate AEN (Asynchronous Event Notification)
4104 */
4105 if (megasas_start_aen(instance)) {
4106 printk(KERN_DEBUG "megasas: start aen failed\n");
4107 goto fail_start_aen;
4108 }
4109
4110 /*
4111 * Register with SCSI mid-layer
4112 */
4113 if (megasas_io_attach(instance))
4114 goto fail_io_attach;
4115
0c79e681 4116 instance->unload = 0;
c4a3e0a5
BS		 4117 return 0;
4118
4119 fail_start_aen:
4120 fail_io_attach:
4121 megasas_mgmt_info.count--;
4122 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
4123 megasas_mgmt_info.max_index--;
4124
4125 pci_set_drvdata(pdev, NULL);
b274cab7 4126 instance->instancet->disable_intr(instance->reg_set);
80d9da98
AR		 4127 free_irq(instance->msi_flag ? instance->msixentry.vector :
4128 instance->pdev->irq, instance);
eb1b1237 4129fail_irq:
eb1b1237
AR		 4130 if (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION)
4131 megasas_release_fusion(instance);
4132 else
4133 megasas_release_mfi(instance);
c4a3e0a5 4134 fail_init_mfi:
0a77066a
AR		 4135 if (instance->msi_flag)
4136 pci_disable_msix(instance->pdev);
c4a3e0a5
BS		 4137 fail_alloc_dma_buf:
4138 if (instance->evt_detail)
4139 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
4140 instance->evt_detail,
4141 instance->evt_detail_h);
4142
eb1b1237 4143 if (instance->producer)
c4a3e0a5
BS		 4144 pci_free_consistent(pdev, sizeof(u32), instance->producer,
4145 instance->producer_h);
4146 if (instance->consumer)
4147 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
4148 instance->consumer_h);
4149 scsi_host_put(host);
4150
4151 fail_alloc_instance:
4152 fail_set_dma_mask:
4153 pci_disable_device(pdev);
4154
4155 return -ENODEV;
4156}
4157
4158/**
4159 * megasas_flush_cache - Requests FW to flush all its caches
4160 * @instance: Adapter soft state
4161 */
4162static void megasas_flush_cache(struct megasas_instance *instance)
4163{
4164 struct megasas_cmd *cmd;
4165 struct megasas_dcmd_frame *dcmd;
4166
39a98554 4167 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
4168 return;
4169
c4a3e0a5
BS		 4170 cmd = megasas_get_cmd(instance);
4171
4172 if (!cmd)
4173 return;
4174
4175 dcmd = &cmd->frame->dcmd;
4176
4177 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4178
4179 dcmd->cmd = MFI_CMD_DCMD;
4180 dcmd->cmd_status = 0x0;
4181 dcmd->sge_count = 0;
4182 dcmd->flags = MFI_FRAME_DIR_NONE;
4183 dcmd->timeout = 0;
780a3762 4184 dcmd->pad_0 = 0;
c4a3e0a5
BS		 4185 dcmd->data_xfer_len = 0;
4186 dcmd->opcode = MR_DCMD_CTRL_CACHE_FLUSH;
4187 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
4188
4189 megasas_issue_blocked_cmd(instance, cmd);
4190
4191 megasas_return_cmd(instance, cmd);
4192
4193 return;
4194}
4195
4196/**
4197 * megasas_shutdown_controller - Instructs FW to shutdown the controller
4198 * @instance: Adapter soft state
31ea7088 4199 * @opcode: Shutdown/Hibernate
c4a3e0a5 4200 */
31ea7088 4201static void megasas_shutdown_controller(struct megasas_instance *instance,
4202 u32 opcode)
c4a3e0a5
BS		 4203{
4204 struct megasas_cmd *cmd;
4205 struct megasas_dcmd_frame *dcmd;
4206
39a98554 4207 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
4208 return;
4209
c4a3e0a5
BS		 4210 cmd = megasas_get_cmd(instance);
4211
4212 if (!cmd)
4213 return;
4214
4215 if (instance->aen_cmd)
4216 megasas_issue_blocked_abort_cmd(instance, instance->aen_cmd);
9c915a8c
AR		 4217 if (instance->map_update_cmd)
4218 megasas_issue_blocked_abort_cmd(instance,
4219 instance->map_update_cmd);
c4a3e0a5
BS		 4220 dcmd = &cmd->frame->dcmd;
4221
4222 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4223
4224 dcmd->cmd = MFI_CMD_DCMD;
4225 dcmd->cmd_status = 0x0;
4226 dcmd->sge_count = 0;
4227 dcmd->flags = MFI_FRAME_DIR_NONE;
4228 dcmd->timeout = 0;
780a3762 4229 dcmd->pad_0 = 0;
c4a3e0a5 4230 dcmd->data_xfer_len = 0;
31ea7088 4231 dcmd->opcode = opcode;
c4a3e0a5
BS		 4232
4233 megasas_issue_blocked_cmd(instance, cmd);
4234
4235 megasas_return_cmd(instance, cmd);
4236
4237 return;
4238}
4239
33139b21 4240#ifdef CONFIG_PM
31ea7088 4241/**
ad84db2e 4242 * megasas_suspend - driver suspend entry point
4243 * @pdev: PCI device structure
31ea7088 4244 * @state: PCI power state to suspend routine
4245 */
33139b21 4246static int
31ea7088 4247megasas_suspend(struct pci_dev *pdev, pm_message_t state)
4248{
4249 struct Scsi_Host *host;
4250 struct megasas_instance *instance;
4251
4252 instance = pci_get_drvdata(pdev);
4253 host = instance->host;
0c79e681 4254 instance->unload = 1;
31ea7088 4255
ad84db2e 4256 if (poll_mode_io)
4257 del_timer_sync(&instance->io_completion_timer);
4258
31ea7088 4259 megasas_flush_cache(instance);
4260 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
7e8a75f4
YB		 4261
4262 /* cancel the delayed work if this work still in queue */
4263 if (instance->ev != NULL) {
4264 struct megasas_aen_event *ev = instance->ev;
a684b8da 4265 cancel_delayed_work_sync(
7e8a75f4 4266 (struct delayed_work *)&ev->hotplug_work);
7e8a75f4
YB		 4267 instance->ev = NULL;
4268 }
4269
31ea7088 4270 tasklet_kill(&instance->isr_tasklet);
4271
4272 pci_set_drvdata(instance->pdev, instance);
4273 instance->instancet->disable_intr(instance->reg_set);
80d9da98
AR		 4274 free_irq(instance->msi_flag ? instance->msixentry.vector :
4275 instance->pdev->irq, instance);
4276 if (instance->msi_flag)
4277 pci_disable_msix(instance->pdev);
31ea7088 4278
4279 pci_save_state(pdev);
4280 pci_disable_device(pdev);
4281
4282 pci_set_power_state(pdev, pci_choose_state(pdev, state));
4283
4284 return 0;
4285}
4286
4287/**
4288 * megasas_resume- driver resume entry point
4289 * @pdev: PCI device structure
4290 */
33139b21 4291static int
31ea7088 4292megasas_resume(struct pci_dev *pdev)
4293{
4294 int rval;
4295 struct Scsi_Host *host;
4296 struct megasas_instance *instance;
4297
4298 instance = pci_get_drvdata(pdev);
4299 host = instance->host;
4300 pci_set_power_state(pdev, PCI_D0);
4301 pci_enable_wake(pdev, PCI_D0, 0);
4302 pci_restore_state(pdev);
4303
4304 /*
4305 * PCI prepping: enable device set bus mastering and dma mask
4306 */
aeab3fd7 4307 rval = pci_enable_device_mem(pdev);
31ea7088 4308
4309 if (rval) {
4310 printk(KERN_ERR "megasas: Enable device failed\n");
4311 return rval;
4312 }
4313
4314 pci_set_master(pdev);
4315
4316 if (megasas_set_dma_mask(pdev))
4317 goto fail_set_dma_mask;
4318
0a77066a
AR		 4319 /* Now re-enable MSI-X */
4320 if (instance->msi_flag)
4321 pci_enable_msix(instance->pdev, &instance->msixentry, 1);
4322
31ea7088 4323 /*
4324 * Initialize MFI Firmware
4325 */
4326
31ea7088 4327 atomic_set(&instance->fw_outstanding, 0);
4328
4329 /*
4330 * We expect the FW state to be READY
4331 */
4332 if (megasas_transition_to_ready(instance))
4333 goto fail_ready_state;
4334
9c915a8c
AR		 4335 switch (instance->pdev->device) {
4336 case PCI_DEVICE_ID_LSI_FUSION:
4337 {
4338 megasas_reset_reply_desc(instance);
4339 if (megasas_ioc_init_fusion(instance)) {
4340 megasas_free_cmds(instance);
4341 megasas_free_cmds_fusion(instance);
4342 goto fail_init_mfi;
4343 }
4344 if (!megasas_get_map_info(instance))
4345 megasas_sync_map_info(instance);
4346 }
4347 break;
4348 default:
4349 *instance->producer = 0;
4350 *instance->consumer = 0;
4351 if (megasas_issue_init_mfi(instance))
4352 goto fail_init_mfi;
4353 break;
4354 }
31ea7088 4355
9c915a8c
AR		 4356 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
4357 (unsigned long)instance);
31ea7088 4358
4359 /*
4360 * Register IRQ
4361 */
80d9da98 4362 if (request_irq(instance->msi_flag ? instance->msixentry.vector :
cd50ba8e 4363 pdev->irq, instance->instancet->service_isr,
80d9da98 4364 IRQF_SHARED, "megasas", instance)) {
31ea7088 4365 printk(KERN_ERR "megasas: Failed to register IRQ\n");
4366 goto fail_irq;
4367 }
4368
4369 instance->instancet->enable_intr(instance->reg_set);
4370
4371 /*
4372 * Initiate AEN (Asynchronous Event Notification)
4373 */
4374 if (megasas_start_aen(instance))
4375 printk(KERN_ERR "megasas: Start AEN failed\n");
4376
ad84db2e 4377 /* Initialize the cmd completion timer */
4378 if (poll_mode_io)
4379 megasas_start_timer(instance, &instance->io_completion_timer,
4380 megasas_io_completion_timer,
4381 MEGASAS_COMPLETION_TIMER_INTERVAL);
0c79e681
YB		 4382 instance->unload = 0;
4383
31ea7088 4384 return 0;
4385
4386fail_irq:
4387fail_init_mfi:
4388 if (instance->evt_detail)
4389 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
4390 instance->evt_detail,
4391 instance->evt_detail_h);
4392
4393 if (instance->producer)
4394 pci_free_consistent(pdev, sizeof(u32), instance->producer,
4395 instance->producer_h);
4396 if (instance->consumer)
4397 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
4398 instance->consumer_h);
4399 scsi_host_put(host);
4400
4401fail_set_dma_mask:
4402fail_ready_state:
4403
4404 pci_disable_device(pdev);
4405
4406 return -ENODEV;
4407}
33139b21
JS		 4408#else
4409#define megasas_suspend NULL
4410#define megasas_resume NULL
4411#endif
31ea7088 4412
c4a3e0a5
BS		 4413/**
4414 * megasas_detach_one - PCI hot"un"plug entry point
4415 * @pdev: PCI device structure
4416 */
33139b21 4417static void __devexit megasas_detach_one(struct pci_dev *pdev)
c4a3e0a5
BS		 4418{
4419 int i;
4420 struct Scsi_Host *host;
4421 struct megasas_instance *instance;
9c915a8c 4422 struct fusion_context *fusion;
c4a3e0a5
BS		 4423
4424 instance = pci_get_drvdata(pdev);
c3518837 4425 instance->unload = 1;
c4a3e0a5 4426 host = instance->host;
9c915a8c 4427 fusion = instance->ctrl_context;
c4a3e0a5 4428
ad84db2e 4429 if (poll_mode_io)
4430 del_timer_sync(&instance->io_completion_timer);
4431
c4a3e0a5
BS		 4432 scsi_remove_host(instance->host);
4433 megasas_flush_cache(instance);
31ea7088 4434 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7e8a75f4
YB		 4435
4436 /* cancel the delayed work if this work still in queue*/
4437 if (instance->ev != NULL) {
4438 struct megasas_aen_event *ev = instance->ev;
a684b8da 4439 cancel_delayed_work_sync(
7e8a75f4 4440 (struct delayed_work *)&ev->hotplug_work);
7e8a75f4
YB		 4441 instance->ev = NULL;
4442 }
4443
5d018ad0 4444 tasklet_kill(&instance->isr_tasklet);
c4a3e0a5
BS		 4445
4446 /*
4447 * Take the instance off the instance array. Note that we will not
4448 * decrement the max_index. We let this array be sparse array
4449 */
4450 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
4451 if (megasas_mgmt_info.instance[i] == instance) {
4452 megasas_mgmt_info.count--;
4453 megasas_mgmt_info.instance[i] = NULL;
4454
4455 break;
4456 }
4457 }
4458
4459 pci_set_drvdata(instance->pdev, NULL);
4460
b274cab7 4461 instance->instancet->disable_intr(instance->reg_set);
c4a3e0a5 4462
80d9da98
AR		 4463 free_irq(instance->msi_flag ? instance->msixentry.vector :
4464 instance->pdev->irq, instance);
4465 if (instance->msi_flag)
4466 pci_disable_msix(instance->pdev);
c4a3e0a5 4467
9c915a8c
AR		 4468 switch (instance->pdev->device) {
4469 case PCI_DEVICE_ID_LSI_FUSION:
4470 megasas_release_fusion(instance);
4471 for (i = 0; i < 2 ; i++)
4472 if (fusion->ld_map[i])
4473 dma_free_coherent(&instance->pdev->dev,
4474 fusion->map_sz,
4475 fusion->ld_map[i],
4476 fusion->
4477 ld_map_phys[i]);
4478 kfree(instance->ctrl_context);
4479 break;
4480 default:
4481 megasas_release_mfi(instance);
4482 pci_free_consistent(pdev,
4483 sizeof(struct megasas_evt_detail),
4484 instance->evt_detail,
4485 instance->evt_detail_h);
4486 pci_free_consistent(pdev, sizeof(u32),
4487 instance->producer,
4488 instance->producer_h);
4489 pci_free_consistent(pdev, sizeof(u32),
4490 instance->consumer,
4491 instance->consumer_h);
4492 break;
4493 }
c4a3e0a5
BS		 4494
4495 scsi_host_put(host);
4496
4497 pci_set_drvdata(pdev, NULL);
4498
4499 pci_disable_device(pdev);
4500
4501 return;
4502}
4503
4504/**
4505 * megasas_shutdown - Shutdown entry point
4506 * @device: Generic device structure
4507 */
4508static void megasas_shutdown(struct pci_dev *pdev)
4509{
4510 struct megasas_instance *instance = pci_get_drvdata(pdev);
0c79e681 4511 instance->unload = 1;
c4a3e0a5 4512 megasas_flush_cache(instance);
530e6fc1 4513 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
c4a3e0a5
BS		 4514}
4515
4516/**
4517 * megasas_mgmt_open - char node "open" entry point
4518 */
4519static int megasas_mgmt_open(struct inode *inode, struct file *filep)
4520{
4521 /*
4522 * Allow only those users with admin rights
4523 */
4524 if (!capable(CAP_SYS_ADMIN))
4525 return -EACCES;
4526
4527 return 0;
4528}
4529
c4a3e0a5
BS		 4530/**
4531 * megasas_mgmt_fasync - Async notifier registration from applications
4532 *
4533 * This function adds the calling process to a driver global queue. When an
4534 * event occurs, SIGIO will be sent to all processes in this queue.
4535 */
4536static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
4537{
4538 int rc;
4539
0b950672 4540 mutex_lock(&megasas_async_queue_mutex);
c4a3e0a5
BS		 4541
4542 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
4543
0b950672 4544 mutex_unlock(&megasas_async_queue_mutex);
c4a3e0a5
BS		 4545
4546 if (rc >= 0) {
4547 /* For sanity check when we get ioctl */
4548 filep->private_data = filep;
4549 return 0;
4550 }
4551
4552 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
4553
4554 return rc;
4555}
4556
c3518837
YB		 4557/**
4558 * megasas_mgmt_poll - char node "poll" entry point
4559 * */
4560static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait)
4561{
4562 unsigned int mask;
4563 unsigned long flags;
4564 poll_wait(file, &megasas_poll_wait, wait);
4565 spin_lock_irqsave(&poll_aen_lock, flags);
4566 if (megasas_poll_wait_aen)
4567 mask = (POLLIN | POLLRDNORM);
4568 else
4569 mask = 0;
4570 spin_unlock_irqrestore(&poll_aen_lock, flags);
4571 return mask;
4572}
4573
c4a3e0a5
BS		 4574/**
4575 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
4576 * @instance: Adapter soft state
4577 * @argp: User's ioctl packet
4578 */
4579static int
4580megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
4581 struct megasas_iocpacket __user * user_ioc,
4582 struct megasas_iocpacket *ioc)
4583{
4584 struct megasas_sge32 *kern_sge32;
4585 struct megasas_cmd *cmd;
4586 void *kbuff_arr[MAX_IOCTL_SGE];
4587 dma_addr_t buf_handle = 0;
4588 int error = 0, i;
4589 void *sense = NULL;
4590 dma_addr_t sense_handle;
7b2519af 4591 unsigned long *sense_ptr;
c4a3e0a5
BS		 4592
4593 memset(kbuff_arr, 0, sizeof(kbuff_arr));
4594
4595 if (ioc->sge_count > MAX_IOCTL_SGE) {
4596 printk(KERN_DEBUG "megasas: SGE count [%d] > max limit [%d]\n",
4597 ioc->sge_count, MAX_IOCTL_SGE);
4598 return -EINVAL;
4599 }
4600
4601 cmd = megasas_get_cmd(instance);
4602 if (!cmd) {
4603 printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n");
4604 return -ENOMEM;
4605 }
4606
4607 /*
4608 * User's IOCTL packet has 2 frames (maximum). Copy those two
4609 * frames into our cmd's frames. cmd->frame's context will get
4610 * overwritten when we copy from user's frames. So set that value
4611 * alone separately
4612 */
4613 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
4614 cmd->frame->hdr.context = cmd->index;
c3518837 4615 cmd->frame->hdr.pad_0 = 0;
c4a3e0a5
BS		 4616
4617 /*
4618 * The management interface between applications and the fw uses
4619 * MFI frames. E.g, RAID configuration changes, LD property changes
4620 * etc are accomplishes through different kinds of MFI frames. The
4621 * driver needs to care only about substituting user buffers with
4622 * kernel buffers in SGLs. The location of SGL is embedded in the
4623 * struct iocpacket itself.
4624 */
4625 kern_sge32 = (struct megasas_sge32 *)
4626 ((unsigned long)cmd->frame + ioc->sgl_off);
4627
4628 /*
4629 * For each user buffer, create a mirror buffer and copy in
4630 */
4631 for (i = 0; i < ioc->sge_count; i++) {
98cb7e44
BM		 4632 if (!ioc->sgl[i].iov_len)
4633 continue;
4634
9f35fa8a 4635 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
c4a3e0a5 4636 ioc->sgl[i].iov_len,
9f35fa8a 4637 &buf_handle, GFP_KERNEL);
c4a3e0a5
BS		 4638 if (!kbuff_arr[i]) {
4639 printk(KERN_DEBUG "megasas: Failed to alloc "
4640 "kernel SGL buffer for IOCTL \n");
4641 error = -ENOMEM;
4642 goto out;
4643 }
4644
4645 /*
4646 * We don't change the dma_coherent_mask, so
4647 * pci_alloc_consistent only returns 32bit addresses
4648 */
4649 kern_sge32[i].phys_addr = (u32) buf_handle;
4650 kern_sge32[i].length = ioc->sgl[i].iov_len;
4651
4652 /*
4653 * We created a kernel buffer corresponding to the
4654 * user buffer. Now copy in from the user buffer
4655 */
4656 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
4657 (u32) (ioc->sgl[i].iov_len))) {
4658 error = -EFAULT;
4659 goto out;
4660 }
4661 }
4662
4663 if (ioc->sense_len) {
9f35fa8a
SP		 4664 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
4665 &sense_handle, GFP_KERNEL);
c4a3e0a5
BS		 4666 if (!sense) {
4667 error = -ENOMEM;
4668 goto out;
4669 }
4670
4671 sense_ptr =
7b2519af 4672 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
c4a3e0a5
BS		 4673 *sense_ptr = sense_handle;
4674 }
4675
4676 /*
4677 * Set the sync_cmd flag so that the ISR knows not to complete this
4678 * cmd to the SCSI mid-layer
4679 */
4680 cmd->sync_cmd = 1;
4681 megasas_issue_blocked_cmd(instance, cmd);
4682 cmd->sync_cmd = 0;
4683
4684 /*
4685 * copy out the kernel buffers to user buffers
4686 */
4687 for (i = 0; i < ioc->sge_count; i++) {
4688 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
4689 ioc->sgl[i].iov_len)) {
4690 error = -EFAULT;
4691 goto out;
4692 }
4693 }
4694
4695 /*
4696 * copy out the sense
4697 */
4698 if (ioc->sense_len) {
4699 /*
b70a41e0 4700 * sense_ptr points to the location that has the user
c4a3e0a5
BS		 4701 * sense buffer address
4702 */
7b2519af
YB		 4703 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
4704 ioc->sense_off);
c4a3e0a5 4705
b70a41e0 4706 if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)),
4707 sense, ioc->sense_len)) {
b10c36a5 4708 printk(KERN_ERR "megasas: Failed to copy out to user "
4709 "sense data\n");
c4a3e0a5
BS		 4710 error = -EFAULT;
4711 goto out;
4712 }
4713 }
4714
4715 /*
4716 * copy the status codes returned by the fw
4717 */
4718 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
4719 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
4720 printk(KERN_DEBUG "megasas: Error copying out cmd_status\n");
4721 error = -EFAULT;
4722 }
4723
4724 out:
4725 if (sense) {
9f35fa8a 4726 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
c4a3e0a5
BS		 4727 sense, sense_handle);
4728 }
4729
4730 for (i = 0; i < ioc->sge_count && kbuff_arr[i]; i++) {
9f35fa8a 4731 dma_free_coherent(&instance->pdev->dev,
c4a3e0a5
BS		 4732 kern_sge32[i].length,
4733 kbuff_arr[i], kern_sge32[i].phys_addr);
4734 }
4735
4736 megasas_return_cmd(instance, cmd);
4737 return error;
4738}
4739
c4a3e0a5
BS		 4740static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
4741{
4742 struct megasas_iocpacket __user *user_ioc =
4743 (struct megasas_iocpacket __user *)arg;
4744 struct megasas_iocpacket *ioc;
4745 struct megasas_instance *instance;
4746 int error;
39a98554 4747 int i;
4748 unsigned long flags;
4749 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 4750
4751 ioc = kmalloc(sizeof(*ioc), GFP_KERNEL);
4752 if (!ioc)
4753 return -ENOMEM;
4754
4755 if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) {
4756 error = -EFAULT;
4757 goto out_kfree_ioc;
4758 }
4759
4760 instance = megasas_lookup_instance(ioc->host_no);
4761 if (!instance) {
4762 error = -ENODEV;
4763 goto out_kfree_ioc;
4764 }
4765
39a98554 4766 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
4767 printk(KERN_ERR "Controller in crit error\n");
0c79e681
YB		 4768 error = -ENODEV;
4769 goto out_kfree_ioc;
4770 }
4771
4772 if (instance->unload == 1) {
4773 error = -ENODEV;
4774 goto out_kfree_ioc;
4775 }
4776
c4a3e0a5
BS		 4777 /*
4778 * We will allow only MEGASAS_INT_CMDS number of parallel ioctl cmds
4779 */
4780 if (down_interruptible(&instance->ioctl_sem)) {
4781 error = -ERESTARTSYS;
4782 goto out_kfree_ioc;
4783 }
39a98554 4784
4785 for (i = 0; i < wait_time; i++) {
4786
4787 spin_lock_irqsave(&instance->hba_lock, flags);
4788 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
4789 spin_unlock_irqrestore(&instance->hba_lock, flags);
4790 break;
4791 }
4792 spin_unlock_irqrestore(&instance->hba_lock, flags);
4793
4794 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
4795 printk(KERN_NOTICE "megasas: waiting"
4796 "for controller reset to finish\n");
4797 }
4798
4799 msleep(1000);
4800 }
4801
4802 spin_lock_irqsave(&instance->hba_lock, flags);
4803 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
4804 spin_unlock_irqrestore(&instance->hba_lock, flags);
4805
4806 printk(KERN_ERR "megaraid_sas: timed out while"
4807 "waiting for HBA to recover\n");
4808 error = -ENODEV;
4809 goto out_kfree_ioc;
4810 }
4811 spin_unlock_irqrestore(&instance->hba_lock, flags);
4812
c4a3e0a5
BS		 4813 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
4814 up(&instance->ioctl_sem);
4815
4816 out_kfree_ioc:
4817 kfree(ioc);
4818 return error;
4819}
4820
4821static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
4822{
4823 struct megasas_instance *instance;
4824 struct megasas_aen aen;
4825 int error;
39a98554 4826 int i;
4827 unsigned long flags;
4828 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 4829
4830 if (file->private_data != file) {
4831 printk(KERN_DEBUG "megasas: fasync_helper was not "
4832 "called first\n");
4833 return -EINVAL;
4834 }
4835
4836 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
4837 return -EFAULT;
4838
4839 instance = megasas_lookup_instance(aen.host_no);
4840
4841 if (!instance)
4842 return -ENODEV;
4843
39a98554 4844 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
4845 return -ENODEV;
0c79e681
YB		 4846 }
4847
4848 if (instance->unload == 1) {
4849 return -ENODEV;
4850 }
4851
39a98554 4852 for (i = 0; i < wait_time; i++) {
4853
4854 spin_lock_irqsave(&instance->hba_lock, flags);
4855 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
4856 spin_unlock_irqrestore(&instance->hba_lock,
4857 flags);
4858 break;
4859 }
4860
4861 spin_unlock_irqrestore(&instance->hba_lock, flags);
4862
4863 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
4864 printk(KERN_NOTICE "megasas: waiting for"
4865 "controller reset to finish\n");
4866 }
4867
4868 msleep(1000);
4869 }
4870
4871 spin_lock_irqsave(&instance->hba_lock, flags);
4872 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
4873 spin_unlock_irqrestore(&instance->hba_lock, flags);
4874 printk(KERN_ERR "megaraid_sas: timed out while waiting"
4875 "for HBA to recover.\n");
4876 return -ENODEV;
4877 }
4878 spin_unlock_irqrestore(&instance->hba_lock, flags);
4879
e5a69e27 4880 mutex_lock(&instance->aen_mutex);
c4a3e0a5
BS		 4881 error = megasas_register_aen(instance, aen.seq_num,
4882 aen.class_locale_word);
e5a69e27 4883 mutex_unlock(&instance->aen_mutex);
c4a3e0a5
BS		 4884 return error;
4885}
4886
4887/**
4888 * megasas_mgmt_ioctl - char node ioctl entry point
4889 */
4890static long
4891megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
4892{
4893 switch (cmd) {
4894 case MEGASAS_IOC_FIRMWARE:
4895 return megasas_mgmt_ioctl_fw(file, arg);
4896
4897 case MEGASAS_IOC_GET_AEN:
4898 return megasas_mgmt_ioctl_aen(file, arg);
4899 }
4900
4901 return -ENOTTY;
4902}
4903
4904#ifdef CONFIG_COMPAT
4905static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
4906{
4907 struct compat_megasas_iocpacket __user *cioc =
4908 (struct compat_megasas_iocpacket __user *)arg;
4909 struct megasas_iocpacket __user *ioc =
4910 compat_alloc_user_space(sizeof(struct megasas_iocpacket));
4911 int i;
4912 int error = 0;
b3dc1a21 4913 compat_uptr_t ptr;
c4a3e0a5 4914
83aabc1b
JG		 4915 if (clear_user(ioc, sizeof(*ioc)))
4916 return -EFAULT;
c4a3e0a5
BS		 4917
4918 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
4919 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
4920 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
4921 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
4922 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
4923 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
4924 return -EFAULT;
4925
b3dc1a21
TH		 4926 /*
4927 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
4928 * sense_len is not null, so prepare the 64bit value under
4929 * the same condition.
4930 */
4931 if (ioc->sense_len) {
4932 void __user **sense_ioc_ptr =
4933 (void __user **)(ioc->frame.raw + ioc->sense_off);
4934 compat_uptr_t *sense_cioc_ptr =
4935 (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off);
4936 if (get_user(ptr, sense_cioc_ptr) ||
4937 put_user(compat_ptr(ptr), sense_ioc_ptr))
4938 return -EFAULT;
4939 }
c4a3e0a5 4940
b3dc1a21 4941 for (i = 0; i < MAX_IOCTL_SGE; i++) {
c4a3e0a5
BS		 4942 if (get_user(ptr, &cioc->sgl[i].iov_base) ||
4943 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
4944 copy_in_user(&ioc->sgl[i].iov_len,
4945 &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
4946 return -EFAULT;
4947 }
4948
4949 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
4950
4951 if (copy_in_user(&cioc->frame.hdr.cmd_status,
4952 &ioc->frame.hdr.cmd_status, sizeof(u8))) {
4953 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
4954 return -EFAULT;
4955 }
4956 return error;
4957}
4958
4959static long
4960megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
4961 unsigned long arg)
4962{
4963 switch (cmd) {
cb59aa6a
SP		 4964 case MEGASAS_IOC_FIRMWARE32:
4965 return megasas_mgmt_compat_ioctl_fw(file, arg);
c4a3e0a5
BS		 4966 case MEGASAS_IOC_GET_AEN:
4967 return megasas_mgmt_ioctl_aen(file, arg);
4968 }
4969
4970 return -ENOTTY;
4971}
4972#endif
4973
4974/*
4975 * File operations structure for management interface
4976 */
00977a59 4977static const struct file_operations megasas_mgmt_fops = {
c4a3e0a5
BS		 4978 .owner = THIS_MODULE,
4979 .open = megasas_mgmt_open,
c4a3e0a5
BS		 4980 .fasync = megasas_mgmt_fasync,
4981 .unlocked_ioctl = megasas_mgmt_ioctl,
c3518837 4982 .poll = megasas_mgmt_poll,
c4a3e0a5
BS		 4983#ifdef CONFIG_COMPAT
4984 .compat_ioctl = megasas_mgmt_compat_ioctl,
4985#endif
6038f373 4986 .llseek = noop_llseek,
c4a3e0a5
BS		 4987};
4988
4989/*
4990 * PCI hotplug support registration structure
4991 */
4992static struct pci_driver megasas_pci_driver = {
4993
4994 .name = "megaraid_sas",
4995 .id_table = megasas_pci_table,
4996 .probe = megasas_probe_one,
4997 .remove = __devexit_p(megasas_detach_one),
31ea7088 4998 .suspend = megasas_suspend,
4999 .resume = megasas_resume,
c4a3e0a5
BS		 5000 .shutdown = megasas_shutdown,
5001};
5002
5003/*
5004 * Sysfs driver attributes
5005 */
5006static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf)
5007{
5008 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
5009 MEGASAS_VERSION);
5010}
5011
5012static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL);
5013
5014static ssize_t
5015megasas_sysfs_show_release_date(struct device_driver *dd, char *buf)
5016{
5017 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
5018 MEGASAS_RELDATE);
5019}
5020
5021static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date,
5022 NULL);
5023
72c4fd36
YB		 5024static ssize_t
5025megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf)
5026{
5027 return sprintf(buf, "%u\n", support_poll_for_event);
5028}
5029
5030static DRIVER_ATTR(support_poll_for_event, S_IRUGO,
5031 megasas_sysfs_show_support_poll_for_event, NULL);
5032
837f5fe8
YB		 5033 static ssize_t
5034megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf)
5035{
5036 return sprintf(buf, "%u\n", support_device_change);
5037}
5038
5039static DRIVER_ATTR(support_device_change, S_IRUGO,
5040 megasas_sysfs_show_support_device_change, NULL);
5041
658dcedb
SP		 5042static ssize_t
5043megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf)
5044{
ad84db2e 5045 return sprintf(buf, "%u\n", megasas_dbg_lvl);
658dcedb
SP		 5046}
5047
5048static ssize_t
5049megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count)
5050{
5051 int retval = count;
5052 if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){
5053 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
5054 retval = -EINVAL;
5055 }
5056 return retval;
5057}
5058
66dca9b8 5059static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl,
ad84db2e 5060 megasas_sysfs_set_dbg_lvl);
5061
5062static ssize_t
5063megasas_sysfs_show_poll_mode_io(struct device_driver *dd, char *buf)
5064{
5065 return sprintf(buf, "%u\n", poll_mode_io);
5066}
5067
5068static ssize_t
5069megasas_sysfs_set_poll_mode_io(struct device_driver *dd,
5070 const char *buf, size_t count)
5071{
5072 int retval = count;
5073 int tmp = poll_mode_io;
5074 int i;
5075 struct megasas_instance *instance;
5076
5077 if (sscanf(buf, "%u", &poll_mode_io) < 1) {
5078 printk(KERN_ERR "megasas: could not set poll_mode_io\n");
5079 retval = -EINVAL;
5080 }
5081
5082 /*
5083 * Check if poll_mode_io is already set or is same as previous value
5084 */
5085 if ((tmp && poll_mode_io) || (tmp == poll_mode_io))
5086 goto out;
5087
5088 if (poll_mode_io) {
5089 /*
5090 * Start timers for all adapters
5091 */
5092 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
5093 instance = megasas_mgmt_info.instance[i];
5094 if (instance) {
5095 megasas_start_timer(instance,
5096 &instance->io_completion_timer,
5097 megasas_io_completion_timer,
5098 MEGASAS_COMPLETION_TIMER_INTERVAL);
5099 }
5100 }
5101 } else {
5102 /*
5103 * Delete timers for all adapters
5104 */
5105 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
5106 instance = megasas_mgmt_info.instance[i];
5107 if (instance)
5108 del_timer_sync(&instance->io_completion_timer);
5109 }
5110 }
5111
5112out:
5113 return retval;
5114}
5115
7e8a75f4
YB		 5116static void
5117megasas_aen_polling(struct work_struct *work)
5118{
5119 struct megasas_aen_event *ev =
5120 container_of(work, struct megasas_aen_event, hotplug_work);
5121 struct megasas_instance *instance = ev->instance;
5122 union megasas_evt_class_locale class_locale;
5123 struct Scsi_Host *host;
5124 struct scsi_device *sdev1;
5125 u16 pd_index = 0;
c9786842 5126 u16 ld_index = 0;
7e8a75f4
YB		 5127 int i, j, doscan = 0;
5128 u32 seq_num;
5129 int error;
5130
5131 if (!instance) {
5132 printk(KERN_ERR "invalid instance!\n");
5133 kfree(ev);
5134 return;
5135 }
5136 instance->ev = NULL;
5137 host = instance->host;
5138 if (instance->evt_detail) {
5139
5140 switch (instance->evt_detail->code) {
5141 case MR_EVT_PD_INSERTED:
c9786842
YB		 5142 if (megasas_get_pd_list(instance) == 0) {
5143 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
5144 for (j = 0;
5145 j < MEGASAS_MAX_DEV_PER_CHANNEL;
5146 j++) {
5147
5148 pd_index =
5149 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5150
5151 sdev1 =
5152 scsi_device_lookup(host, i, j, 0);
5153
5154 if (instance->pd_list[pd_index].driveState
5155 == MR_PD_STATE_SYSTEM) {
5156 if (!sdev1) {
5157 scsi_add_device(host, i, j, 0);
5158 }
5159
5160 if (sdev1)
5161 scsi_device_put(sdev1);
5162 }
5163 }
5164 }
5165 }
5166 doscan = 0;
5167 break;
5168
7e8a75f4 5169 case MR_EVT_PD_REMOVED:
c9786842
YB		 5170 if (megasas_get_pd_list(instance) == 0) {
5171 megasas_get_pd_list(instance);
5172 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
5173 for (j = 0;
5174 j < MEGASAS_MAX_DEV_PER_CHANNEL;
5175 j++) {
5176
5177 pd_index =
5178 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5179
5180 sdev1 =
5181 scsi_device_lookup(host, i, j, 0);
5182
5183 if (instance->pd_list[pd_index].driveState
5184 == MR_PD_STATE_SYSTEM) {
5185 if (sdev1) {
5186 scsi_device_put(sdev1);
5187 }
5188 } else {
5189 if (sdev1) {
5190 scsi_remove_device(sdev1);
5191 scsi_device_put(sdev1);
5192 }
5193 }
5194 }
5195 }
5196 }
5197 doscan = 0;
5198 break;
5199
5200 case MR_EVT_LD_OFFLINE:
4c598b23 5201 case MR_EVT_CFG_CLEARED:
c9786842
YB		 5202 case MR_EVT_LD_DELETED:
5203 megasas_get_ld_list(instance);
5204 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
5205 for (j = 0;
5206 j < MEGASAS_MAX_DEV_PER_CHANNEL;
5207 j++) {
5208
5209 ld_index =
5210 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5211
5212 sdev1 = scsi_device_lookup(host,
5213 i + MEGASAS_MAX_LD_CHANNELS,
5214 j,
5215 0);
5216
5217 if (instance->ld_ids[ld_index] != 0xff) {
5218 if (sdev1) {
5219 scsi_device_put(sdev1);
5220 }
5221 } else {
5222 if (sdev1) {
5223 scsi_remove_device(sdev1);
5224 scsi_device_put(sdev1);
5225 }
5226 }
5227 }
5228 }
5229 doscan = 0;
5230 break;
5231 case MR_EVT_LD_CREATED:
5232 megasas_get_ld_list(instance);
5233 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
5234 for (j = 0;
5235 j < MEGASAS_MAX_DEV_PER_CHANNEL;
5236 j++) {
5237 ld_index =
5238 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5239
5240 sdev1 = scsi_device_lookup(host,
5241 i+MEGASAS_MAX_LD_CHANNELS,
5242 j, 0);
5243
5244 if (instance->ld_ids[ld_index] !=
5245 0xff) {
5246 if (!sdev1) {
5247 scsi_add_device(host,
5248 i + 2,
5249 j, 0);
5250 }
5251 }
5252 if (sdev1) {
5253 scsi_device_put(sdev1);
5254 }
5255 }
5256 }
5257 doscan = 0;
5258 break;
7e8a75f4 5259 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
c9786842 5260 case MR_EVT_FOREIGN_CFG_IMPORTED:
9c915a8c 5261 case MR_EVT_LD_STATE_CHANGE:
7e8a75f4
YB		 5262 doscan = 1;
5263 break;
5264 default:
5265 doscan = 0;
5266 break;
5267 }
5268 } else {
5269 printk(KERN_ERR "invalid evt_detail!\n");
5270 kfree(ev);
5271 return;
5272 }
5273
5274 if (doscan) {
5275 printk(KERN_INFO "scanning ...\n");
5276 megasas_get_pd_list(instance);
5277 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
5278 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
5279 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j;
5280 sdev1 = scsi_device_lookup(host, i, j, 0);
5281 if (instance->pd_list[pd_index].driveState ==
5282 MR_PD_STATE_SYSTEM) {
5283 if (!sdev1) {
5284 scsi_add_device(host, i, j, 0);
5285 }
5286 if (sdev1)
5287 scsi_device_put(sdev1);
5288 } else {
5289 if (sdev1) {
5290 scsi_remove_device(sdev1);
5291 scsi_device_put(sdev1);
5292 }
5293 }
5294 }
5295 }
c9786842
YB		 5296
5297 megasas_get_ld_list(instance);
5298 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
5299 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
5300 ld_index =
5301 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5302
5303 sdev1 = scsi_device_lookup(host,
5304 i+MEGASAS_MAX_LD_CHANNELS, j, 0);
5305 if (instance->ld_ids[ld_index] != 0xff) {
5306 if (!sdev1) {
5307 scsi_add_device(host,
5308 i+2,
5309 j, 0);
5310 } else {
5311 scsi_device_put(sdev1);
5312 }
5313 } else {
5314 if (sdev1) {
5315 scsi_remove_device(sdev1);
5316 scsi_device_put(sdev1);
5317 }
5318 }
5319 }
5320 }
7e8a75f4
YB		 5321 }
5322
5323 if ( instance->aen_cmd != NULL ) {
5324 kfree(ev);
5325 return ;
5326 }
5327
5328 seq_num = instance->evt_detail->seq_num + 1;
5329
5330 /* Register AEN with FW for latest sequence number plus 1 */
5331 class_locale.members.reserved = 0;
5332 class_locale.members.locale = MR_EVT_LOCALE_ALL;
5333 class_locale.members.class = MR_EVT_CLASS_DEBUG;
5334 mutex_lock(&instance->aen_mutex);
5335 error = megasas_register_aen(instance, seq_num,
5336 class_locale.word);
5337 mutex_unlock(&instance->aen_mutex);
5338
5339 if (error)
5340 printk(KERN_ERR "register aen failed error %x\n", error);
5341
5342 kfree(ev);
5343}
5344
5345
bb7d3f24 5346static DRIVER_ATTR(poll_mode_io, S_IRUGO|S_IWUSR,
ad84db2e 5347 megasas_sysfs_show_poll_mode_io,
5348 megasas_sysfs_set_poll_mode_io);
658dcedb 5349
c4a3e0a5
BS		 5350/**
5351 * megasas_init - Driver load entry point
5352 */
5353static int __init megasas_init(void)
5354{
5355 int rval;
5356
5357 /*
5358 * Announce driver version and other information
5359 */
5360 printk(KERN_INFO "megasas: %s %s\n", MEGASAS_VERSION,
5361 MEGASAS_EXT_VERSION);
5362
72c4fd36 5363 support_poll_for_event = 2;
837f5fe8 5364 support_device_change = 1;
72c4fd36 5365
c4a3e0a5
BS		 5366 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
5367
5368 /*
5369 * Register character device node
5370 */
5371 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
5372
5373 if (rval < 0) {
5374 printk(KERN_DEBUG "megasas: failed to open device node\n");
5375 return rval;
5376 }
5377
5378 megasas_mgmt_majorno = rval;
5379
5380 /*
5381 * Register ourselves as PCI hotplug module
5382 */
4041b9cd 5383 rval = pci_register_driver(&megasas_pci_driver);
c4a3e0a5
BS		 5384
5385 if (rval) {
5386 printk(KERN_DEBUG "megasas: PCI hotplug regisration failed \n");
83aabc1b
JG		 5387 goto err_pcidrv;
5388 }
5389
5390 rval = driver_create_file(&megasas_pci_driver.driver,
5391 &driver_attr_version);
5392 if (rval)
5393 goto err_dcf_attr_ver;
5394 rval = driver_create_file(&megasas_pci_driver.driver,
5395 &driver_attr_release_date);
5396 if (rval)
5397 goto err_dcf_rel_date;
72c4fd36
YB		 5398
5399 rval = driver_create_file(&megasas_pci_driver.driver,
5400 &driver_attr_support_poll_for_event);
5401 if (rval)
5402 goto err_dcf_support_poll_for_event;
5403
83aabc1b
JG		 5404 rval = driver_create_file(&megasas_pci_driver.driver,
5405 &driver_attr_dbg_lvl);
5406 if (rval)
5407 goto err_dcf_dbg_lvl;
ad84db2e 5408 rval = driver_create_file(&megasas_pci_driver.driver,
5409 &driver_attr_poll_mode_io);
5410 if (rval)
5411 goto err_dcf_poll_mode_io;
c4a3e0a5 5412
837f5fe8
YB		 5413 rval = driver_create_file(&megasas_pci_driver.driver,
5414 &driver_attr_support_device_change);
5415 if (rval)
5416 goto err_dcf_support_device_change;
5417
c4a3e0a5 5418 return rval;
ad84db2e 5419
837f5fe8
YB		 5420err_dcf_support_device_change:
5421 driver_remove_file(&megasas_pci_driver.driver,
5422 &driver_attr_poll_mode_io);
5423
ad84db2e 5424err_dcf_poll_mode_io:
5425 driver_remove_file(&megasas_pci_driver.driver,
5426 &driver_attr_dbg_lvl);
83aabc1b 5427err_dcf_dbg_lvl:
72c4fd36
YB		 5428 driver_remove_file(&megasas_pci_driver.driver,
5429 &driver_attr_support_poll_for_event);
5430
5431err_dcf_support_poll_for_event:
83aabc1b
JG		 5432 driver_remove_file(&megasas_pci_driver.driver,
5433 &driver_attr_release_date);
72c4fd36 5434
83aabc1b
JG		 5435err_dcf_rel_date:
5436 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
5437err_dcf_attr_ver:
5438 pci_unregister_driver(&megasas_pci_driver);
5439err_pcidrv:
5440 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
0d49016b 5441 return rval;
c4a3e0a5
BS		 5442}
5443
5444/**
5445 * megasas_exit - Driver unload entry point
5446 */
5447static void __exit megasas_exit(void)
5448{
ad84db2e 5449 driver_remove_file(&megasas_pci_driver.driver,
5450 &driver_attr_poll_mode_io);
658dcedb
SP		 5451 driver_remove_file(&megasas_pci_driver.driver,
5452 &driver_attr_dbg_lvl);
837f5fe8
YB		 5453 driver_remove_file(&megasas_pci_driver.driver,
5454 &driver_attr_support_poll_for_event);
5455 driver_remove_file(&megasas_pci_driver.driver,
5456 &driver_attr_support_device_change);
83aabc1b
JG		 5457 driver_remove_file(&megasas_pci_driver.driver,
5458 &driver_attr_release_date);
5459 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
c4a3e0a5
BS		 5460
5461 pci_unregister_driver(&megasas_pci_driver);
5462 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
5463}
5464
5465module_init(megasas_init);
5466module_exit(megasas_exit);
Ubuntu Artful kernel mirror