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Merge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvar...
[net-next-2.6.git] / drivers / scsi / megaraid / megaraid_sas.c
CommitLineData
c4a3e0a5
BS		 1/*
2 *
3 * Linux MegaRAID driver for SAS based RAID controllers
4 *
f28cd7cf 5 * Copyright (c) 2003-2005 LSI Corporation.
c4a3e0a5
BS		 6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
11 *
12 * FILE : megaraid_sas.c
e340c353 13 * Version : v00.00.04.31-rc1
c4a3e0a5
BS		 14 *
15 * Authors:
cc5968c8
SP		 16 * (email-id : megaraidlinux@lsi.com)
17 * Sreenivas Bagalkote
18 * Sumant Patro
19 * Bo Yang
c4a3e0a5
BS		 20 *
21 * List of supported controllers
22 *
23 * OEM Product Name VID DID SSVID SSID
24 * --- ------------ --- --- ---- ----
25 */
26
27#include <linux/kernel.h>
28#include <linux/types.h>
29#include <linux/pci.h>
30#include <linux/list.h>
c4a3e0a5
BS		 31#include <linux/moduleparam.h>
32#include <linux/module.h>
33#include <linux/spinlock.h>
34#include <linux/interrupt.h>
35#include <linux/delay.h>
36#include <linux/uio.h>
5a0e3ad6 37#include <linux/slab.h>
c4a3e0a5 38#include <asm/uaccess.h>
43399236 39#include <linux/fs.h>
c4a3e0a5 40#include <linux/compat.h>
cf62a0a5 41#include <linux/blkdev.h>
0b950672 42#include <linux/mutex.h>
c3518837 43#include <linux/poll.h>
c4a3e0a5
BS		 44
45#include <scsi/scsi.h>
46#include <scsi/scsi_cmnd.h>
47#include <scsi/scsi_device.h>
48#include <scsi/scsi_host.h>
49#include "megaraid_sas.h"
50
ad84db2e 51/*
52 * poll_mode_io:1- schedule complete completion from q cmd
53 */
54static unsigned int poll_mode_io;
55module_param_named(poll_mode_io, poll_mode_io, int, 0);
56MODULE_PARM_DESC(poll_mode_io,
57 "Complete cmds from IO path, (default=0)");
58
1fd10685
YB		 59/*
60 * Number of sectors per IO command
61 * Will be set in megasas_init_mfi if user does not provide
62 */
63static unsigned int max_sectors;
64module_param_named(max_sectors, max_sectors, int, 0);
65MODULE_PARM_DESC(max_sectors,
66 "Maximum number of sectors per IO command");
67
c4a3e0a5
BS		 68MODULE_LICENSE("GPL");
69MODULE_VERSION(MEGASAS_VERSION);
3d6d174a 70MODULE_AUTHOR("megaraidlinux@lsi.com");
f28cd7cf 71MODULE_DESCRIPTION("LSI MegaRAID SAS Driver");
c4a3e0a5 72
39a98554 73static int megasas_transition_to_ready(struct megasas_instance *instance);
74static int megasas_get_pd_list(struct megasas_instance *instance);
75static int megasas_issue_init_mfi(struct megasas_instance *instance);
76static int megasas_register_aen(struct megasas_instance *instance,
77 u32 seq_num, u32 class_locale_word);
c4a3e0a5
BS		 78/*
79 * PCI ID table for all supported controllers
80 */
81static struct pci_device_id megasas_pci_table[] = {
82
f3d7271c
HK		 83 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
84 /* xscale IOP */
85 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
86 /* ppc IOP */
af7a5647 87 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
88 /* ppc IOP */
6610a6b3
YB		 89 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
90 /* gen2*/
91 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
92 /* gen2*/
87911122
YB		 93 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
94 /* skinny*/
95 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
96 /* skinny*/
f3d7271c
HK		 97 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
98 /* xscale IOP, vega */
99 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
100 /* xscale IOP */
101 {}
c4a3e0a5
BS		 102};
103
104MODULE_DEVICE_TABLE(pci, megasas_pci_table);
105
106static int megasas_mgmt_majorno;
107static struct megasas_mgmt_info megasas_mgmt_info;
108static struct fasync_struct *megasas_async_queue;
0b950672 109static DEFINE_MUTEX(megasas_async_queue_mutex);
c4a3e0a5 110
c3518837
YB		 111static int megasas_poll_wait_aen;
112static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
72c4fd36 113static u32 support_poll_for_event;
658dcedb 114static u32 megasas_dbg_lvl;
837f5fe8 115static u32 support_device_change;
658dcedb 116
c3518837
YB		 117/* define lock for aen poll */
118spinlock_t poll_aen_lock;
119
7343eb65 120static void
121megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
122 u8 alt_status);
123
c4a3e0a5
BS		 124/**
125 * megasas_get_cmd - Get a command from the free pool
126 * @instance: Adapter soft state
127 *
128 * Returns a free command from the pool
129 */
858119e1 130static struct megasas_cmd *megasas_get_cmd(struct megasas_instance
c4a3e0a5
BS		 131 *instance)
132{
133 unsigned long flags;
134 struct megasas_cmd *cmd = NULL;
135
136 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
137
138 if (!list_empty(&instance->cmd_pool)) {
139 cmd = list_entry((&instance->cmd_pool)->next,
140 struct megasas_cmd, list);
141 list_del_init(&cmd->list);
142 } else {
143 printk(KERN_ERR "megasas: Command pool empty!\n");
144 }
145
146 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
147 return cmd;
148}
149
150/**
151 * megasas_return_cmd - Return a cmd to free command pool
152 * @instance: Adapter soft state
153 * @cmd: Command packet to be returned to free command pool
154 */
155static inline void
156megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
157{
158 unsigned long flags;
159
160 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
161
162 cmd->scmd = NULL;
163 list_add_tail(&cmd->list, &instance->cmd_pool);
164
165 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
166}
167
1341c939
SP		 168
169/**
170* The following functions are defined for xscale
171* (deviceid : 1064R, PERC5) controllers
172*/
173
c4a3e0a5 174/**
1341c939 175 * megasas_enable_intr_xscale - Enables interrupts
c4a3e0a5
BS		 176 * @regs: MFI register set
177 */
178static inline void
1341c939 179megasas_enable_intr_xscale(struct megasas_register_set __iomem * regs)
c4a3e0a5 180{
39a98554 181 writel(0, &(regs)->outbound_intr_mask);
c4a3e0a5
BS		 182
183 /* Dummy readl to force pci flush */
184 readl(&regs->outbound_intr_mask);
185}
186
b274cab7
SP		 187/**
188 * megasas_disable_intr_xscale -Disables interrupt
189 * @regs: MFI register set
190 */
191static inline void
192megasas_disable_intr_xscale(struct megasas_register_set __iomem * regs)
193{
194 u32 mask = 0x1f;
195 writel(mask, &regs->outbound_intr_mask);
196 /* Dummy readl to force pci flush */
197 readl(&regs->outbound_intr_mask);
198}
199
1341c939
SP		 200/**
201 * megasas_read_fw_status_reg_xscale - returns the current FW status value
202 * @regs: MFI register set
203 */
204static u32
205megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs)
206{
207 return readl(&(regs)->outbound_msg_0);
208}
209/**
210 * megasas_clear_interrupt_xscale - Check & clear interrupt
211 * @regs: MFI register set
212 */
213static int
214megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs)
215{
216 u32 status;
39a98554 217 u32 mfiStatus = 0;
1341c939
SP		 218 /*
219 * Check if it is our interrupt
220 */
221 status = readl(&regs->outbound_intr_status);
222
39a98554 223 if (status & MFI_OB_INTR_STATUS_MASK)
224 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
225 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
226 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
1341c939
SP		 227
228 /*
229 * Clear the interrupt by writing back the same value
230 */
39a98554 231 if (mfiStatus)
232 writel(status, &regs->outbound_intr_status);
1341c939 233
06f579de
YB		 234 /* Dummy readl to force pci flush */
235 readl(&regs->outbound_intr_status);
236
39a98554 237 return mfiStatus;
1341c939
SP		 238}
239
240/**
241 * megasas_fire_cmd_xscale - Sends command to the FW
242 * @frame_phys_addr : Physical address of cmd
243 * @frame_count : Number of frames for the command
244 * @regs : MFI register set
245 */
246static inline void
0c79e681
YB		 247megasas_fire_cmd_xscale(struct megasas_instance *instance,
248 dma_addr_t frame_phys_addr,
249 u32 frame_count,
250 struct megasas_register_set __iomem *regs)
1341c939 251{
39a98554 252 unsigned long flags;
253 spin_lock_irqsave(&instance->hba_lock, flags);
1341c939
SP		 254 writel((frame_phys_addr >> 3)|(frame_count),
255 &(regs)->inbound_queue_port);
39a98554 256 spin_unlock_irqrestore(&instance->hba_lock, flags);
257}
258
259/**
260 * megasas_adp_reset_xscale - For controller reset
261 * @regs: MFI register set
262 */
263static int
264megasas_adp_reset_xscale(struct megasas_instance *instance,
265 struct megasas_register_set __iomem *regs)
266{
267 u32 i;
268 u32 pcidata;
269 writel(MFI_ADP_RESET, &regs->inbound_doorbell);
270
271 for (i = 0; i < 3; i++)
272 msleep(1000); /* sleep for 3 secs */
273 pcidata = 0;
274 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
275 printk(KERN_NOTICE "pcidata = %x\n", pcidata);
276 if (pcidata & 0x2) {
277 printk(KERN_NOTICE "mfi 1068 offset read=%x\n", pcidata);
278 pcidata &= ~0x2;
279 pci_write_config_dword(instance->pdev,
280 MFI_1068_PCSR_OFFSET, pcidata);
281
282 for (i = 0; i < 2; i++)
283 msleep(1000); /* need to wait 2 secs again */
284
285 pcidata = 0;
286 pci_read_config_dword(instance->pdev,
287 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
288 printk(KERN_NOTICE "1068 offset handshake read=%x\n", pcidata);
289 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
290 printk(KERN_NOTICE "1068 offset pcidt=%x\n", pcidata);
291 pcidata = 0;
292 pci_write_config_dword(instance->pdev,
293 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
294 }
295 }
296 return 0;
297}
298
299/**
300 * megasas_check_reset_xscale - For controller reset check
301 * @regs: MFI register set
302 */
303static int
304megasas_check_reset_xscale(struct megasas_instance *instance,
305 struct megasas_register_set __iomem *regs)
306{
307 u32 consumer;
308 consumer = *instance->consumer;
309
310 if ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) &&
311 (*instance->consumer == MEGASAS_ADPRESET_INPROG_SIGN)) {
312 return 1;
313 }
314 return 0;
1341c939
SP		 315}
316
317static struct megasas_instance_template megasas_instance_template_xscale = {
318
319 .fire_cmd = megasas_fire_cmd_xscale,
320 .enable_intr = megasas_enable_intr_xscale,
b274cab7 321 .disable_intr = megasas_disable_intr_xscale,
1341c939
SP		 322 .clear_intr = megasas_clear_intr_xscale,
323 .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
39a98554 324 .adp_reset = megasas_adp_reset_xscale,
325 .check_reset = megasas_check_reset_xscale,
1341c939
SP		 326};
327
328/**
329* This is the end of set of functions & definitions specific
330* to xscale (deviceid : 1064R, PERC5) controllers
331*/
332
f9876f0b
SP		 333/**
334* The following functions are defined for ppc (deviceid : 0x60)
335* controllers
336*/
337
338/**
339 * megasas_enable_intr_ppc - Enables interrupts
340 * @regs: MFI register set
341 */
342static inline void
343megasas_enable_intr_ppc(struct megasas_register_set __iomem * regs)
344{
345 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
346
39a98554 347 writel(~0x80000000, &(regs)->outbound_intr_mask);
f9876f0b
SP		 348
349 /* Dummy readl to force pci flush */
350 readl(&regs->outbound_intr_mask);
351}
352
b274cab7
SP		 353/**
354 * megasas_disable_intr_ppc - Disable interrupt
355 * @regs: MFI register set
356 */
357static inline void
358megasas_disable_intr_ppc(struct megasas_register_set __iomem * regs)
359{
360 u32 mask = 0xFFFFFFFF;
361 writel(mask, &regs->outbound_intr_mask);
362 /* Dummy readl to force pci flush */
363 readl(&regs->outbound_intr_mask);
364}
365
f9876f0b
SP		 366/**
367 * megasas_read_fw_status_reg_ppc - returns the current FW status value
368 * @regs: MFI register set
369 */
370static u32
371megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs)
372{
373 return readl(&(regs)->outbound_scratch_pad);
374}
375
376/**
377 * megasas_clear_interrupt_ppc - Check & clear interrupt
378 * @regs: MFI register set
379 */
380static int
381megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs)
382{
383 u32 status;
384 /*
385 * Check if it is our interrupt
386 */
387 status = readl(&regs->outbound_intr_status);
388
389 if (!(status & MFI_REPLY_1078_MESSAGE_INTERRUPT)) {
39a98554 390 return 0;
f9876f0b
SP		 391 }
392
393 /*
394 * Clear the interrupt by writing back the same value
395 */
396 writel(status, &regs->outbound_doorbell_clear);
397
06f579de
YB		 398 /* Dummy readl to force pci flush */
399 readl(&regs->outbound_doorbell_clear);
400
39a98554 401 return 1;
f9876f0b
SP		 402}
403/**
404 * megasas_fire_cmd_ppc - Sends command to the FW
405 * @frame_phys_addr : Physical address of cmd
406 * @frame_count : Number of frames for the command
407 * @regs : MFI register set
408 */
409static inline void
0c79e681
YB		 410megasas_fire_cmd_ppc(struct megasas_instance *instance,
411 dma_addr_t frame_phys_addr,
412 u32 frame_count,
413 struct megasas_register_set __iomem *regs)
f9876f0b 414{
39a98554 415 unsigned long flags;
416 spin_lock_irqsave(&instance->hba_lock, flags);
f9876f0b
SP		 417 writel((frame_phys_addr | (frame_count<<1))|1,
418 &(regs)->inbound_queue_port);
39a98554 419 spin_unlock_irqrestore(&instance->hba_lock, flags);
f9876f0b
SP		 420}
421
39a98554 422/**
423 * megasas_adp_reset_ppc - For controller reset
424 * @regs: MFI register set
425 */
426static int
427megasas_adp_reset_ppc(struct megasas_instance *instance,
428 struct megasas_register_set __iomem *regs)
429{
430 return 0;
431}
432
433/**
434 * megasas_check_reset_ppc - For controller reset check
435 * @regs: MFI register set
436 */
437static int
438megasas_check_reset_ppc(struct megasas_instance *instance,
439 struct megasas_register_set __iomem *regs)
440{
441 return 0;
442}
f9876f0b
SP		 443static struct megasas_instance_template megasas_instance_template_ppc = {
444
445 .fire_cmd = megasas_fire_cmd_ppc,
446 .enable_intr = megasas_enable_intr_ppc,
b274cab7 447 .disable_intr = megasas_disable_intr_ppc,
f9876f0b
SP		 448 .clear_intr = megasas_clear_intr_ppc,
449 .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
39a98554 450 .adp_reset = megasas_adp_reset_ppc,
451 .check_reset = megasas_check_reset_ppc,
f9876f0b
SP		 452};
453
87911122
YB		 454/**
455 * megasas_enable_intr_skinny - Enables interrupts
456 * @regs: MFI register set
457 */
458static inline void
459megasas_enable_intr_skinny(struct megasas_register_set __iomem *regs)
460{
461 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
462
463 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
464
465 /* Dummy readl to force pci flush */
466 readl(&regs->outbound_intr_mask);
467}
468
469/**
470 * megasas_disable_intr_skinny - Disables interrupt
471 * @regs: MFI register set
472 */
473static inline void
474megasas_disable_intr_skinny(struct megasas_register_set __iomem *regs)
475{
476 u32 mask = 0xFFFFFFFF;
477 writel(mask, &regs->outbound_intr_mask);
478 /* Dummy readl to force pci flush */
479 readl(&regs->outbound_intr_mask);
480}
481
482/**
483 * megasas_read_fw_status_reg_skinny - returns the current FW status value
484 * @regs: MFI register set
485 */
486static u32
487megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs)
488{
489 return readl(&(regs)->outbound_scratch_pad);
490}
491
492/**
493 * megasas_clear_interrupt_skinny - Check & clear interrupt
494 * @regs: MFI register set
495 */
496static int
497megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs)
498{
499 u32 status;
500 /*
501 * Check if it is our interrupt
502 */
503 status = readl(&regs->outbound_intr_status);
504
505 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
39a98554 506 return 0;
87911122
YB		 507 }
508
509 /*
510 * Clear the interrupt by writing back the same value
511 */
512 writel(status, &regs->outbound_intr_status);
513
514 /*
515 * dummy read to flush PCI
516 */
517 readl(&regs->outbound_intr_status);
518
39a98554 519 return 1;
87911122
YB		 520}
521
522/**
523 * megasas_fire_cmd_skinny - Sends command to the FW
524 * @frame_phys_addr : Physical address of cmd
525 * @frame_count : Number of frames for the command
526 * @regs : MFI register set
527 */
528static inline void
0c79e681
YB		 529megasas_fire_cmd_skinny(struct megasas_instance *instance,
530 dma_addr_t frame_phys_addr,
531 u32 frame_count,
87911122
YB		 532 struct megasas_register_set __iomem *regs)
533{
0c79e681 534 unsigned long flags;
39a98554 535 spin_lock_irqsave(&instance->hba_lock, flags);
87911122
YB		 536 writel(0, &(regs)->inbound_high_queue_port);
537 writel((frame_phys_addr | (frame_count<<1))|1,
538 &(regs)->inbound_low_queue_port);
39a98554 539 spin_unlock_irqrestore(&instance->hba_lock, flags);
540}
541
542/**
543 * megasas_adp_reset_skinny - For controller reset
544 * @regs: MFI register set
545 */
546static int
547megasas_adp_reset_skinny(struct megasas_instance *instance,
548 struct megasas_register_set __iomem *regs)
549{
550 return 0;
551}
552
553/**
554 * megasas_check_reset_skinny - For controller reset check
555 * @regs: MFI register set
556 */
557static int
558megasas_check_reset_skinny(struct megasas_instance *instance,
559 struct megasas_register_set __iomem *regs)
560{
561 return 0;
87911122
YB		 562}
563
564static struct megasas_instance_template megasas_instance_template_skinny = {
565
566 .fire_cmd = megasas_fire_cmd_skinny,
567 .enable_intr = megasas_enable_intr_skinny,
568 .disable_intr = megasas_disable_intr_skinny,
569 .clear_intr = megasas_clear_intr_skinny,
570 .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
39a98554 571 .adp_reset = megasas_adp_reset_skinny,
572 .check_reset = megasas_check_reset_skinny,
87911122
YB		 573};
574
575
6610a6b3
YB		 576/**
577* The following functions are defined for gen2 (deviceid : 0x78 0x79)
578* controllers
579*/
580
581/**
582 * megasas_enable_intr_gen2 - Enables interrupts
583 * @regs: MFI register set
584 */
585static inline void
586megasas_enable_intr_gen2(struct megasas_register_set __iomem *regs)
587{
588 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
589
590 /* write ~0x00000005 (4 & 1) to the intr mask*/
591 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
592
593 /* Dummy readl to force pci flush */
594 readl(&regs->outbound_intr_mask);
595}
596
597/**
598 * megasas_disable_intr_gen2 - Disables interrupt
599 * @regs: MFI register set
600 */
601static inline void
602megasas_disable_intr_gen2(struct megasas_register_set __iomem *regs)
603{
604 u32 mask = 0xFFFFFFFF;
605 writel(mask, &regs->outbound_intr_mask);
606 /* Dummy readl to force pci flush */
607 readl(&regs->outbound_intr_mask);
608}
609
610/**
611 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
612 * @regs: MFI register set
613 */
614static u32
615megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs)
616{
617 return readl(&(regs)->outbound_scratch_pad);
618}
619
620/**
621 * megasas_clear_interrupt_gen2 - Check & clear interrupt
622 * @regs: MFI register set
623 */
624static int
625megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs)
626{
627 u32 status;
39a98554 628 u32 mfiStatus = 0;
6610a6b3
YB		 629 /*
630 * Check if it is our interrupt
631 */
632 status = readl(&regs->outbound_intr_status);
633
39a98554 634 if (status & MFI_GEN2_ENABLE_INTERRUPT_MASK) {
635 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
636 }
637 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
638 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
639 }
6610a6b3
YB		 640
641 /*
642 * Clear the interrupt by writing back the same value
643 */
39a98554 644 if (mfiStatus)
645 writel(status, &regs->outbound_doorbell_clear);
6610a6b3
YB		 646
647 /* Dummy readl to force pci flush */
648 readl(&regs->outbound_intr_status);
649
39a98554 650 return mfiStatus;
6610a6b3
YB		 651}
652/**
653 * megasas_fire_cmd_gen2 - Sends command to the FW
654 * @frame_phys_addr : Physical address of cmd
655 * @frame_count : Number of frames for the command
656 * @regs : MFI register set
657 */
658static inline void
0c79e681
YB		 659megasas_fire_cmd_gen2(struct megasas_instance *instance,
660 dma_addr_t frame_phys_addr,
661 u32 frame_count,
6610a6b3
YB		 662 struct megasas_register_set __iomem *regs)
663{
39a98554 664 unsigned long flags;
665 spin_lock_irqsave(&instance->hba_lock, flags);
6610a6b3
YB		 666 writel((frame_phys_addr | (frame_count<<1))|1,
667 &(regs)->inbound_queue_port);
39a98554 668 spin_unlock_irqrestore(&instance->hba_lock, flags);
669}
670
671/**
672 * megasas_adp_reset_gen2 - For controller reset
673 * @regs: MFI register set
674 */
675static int
676megasas_adp_reset_gen2(struct megasas_instance *instance,
677 struct megasas_register_set __iomem *reg_set)
678{
679 u32 retry = 0 ;
680 u32 HostDiag;
681
682 writel(0, &reg_set->seq_offset);
683 writel(4, &reg_set->seq_offset);
684 writel(0xb, &reg_set->seq_offset);
685 writel(2, &reg_set->seq_offset);
686 writel(7, &reg_set->seq_offset);
687 writel(0xd, &reg_set->seq_offset);
688 msleep(1000);
689
690 HostDiag = (u32)readl(&reg_set->host_diag);
691
692 while ( !( HostDiag & DIAG_WRITE_ENABLE) ) {
693 msleep(100);
694 HostDiag = (u32)readl(&reg_set->host_diag);
695 printk(KERN_NOTICE "RESETGEN2: retry=%x, hostdiag=%x\n",
696 retry, HostDiag);
697
698 if (retry++ >= 100)
699 return 1;
700
701 }
702
703 printk(KERN_NOTICE "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
704
705 writel((HostDiag | DIAG_RESET_ADAPTER), &reg_set->host_diag);
706
707 ssleep(10);
708
709 HostDiag = (u32)readl(&reg_set->host_diag);
710 while ( ( HostDiag & DIAG_RESET_ADAPTER) ) {
711 msleep(100);
712 HostDiag = (u32)readl(&reg_set->host_diag);
713 printk(KERN_NOTICE "RESET_GEN2: retry=%x, hostdiag=%x\n",
714 retry, HostDiag);
715
716 if (retry++ >= 1000)
717 return 1;
718
719 }
720 return 0;
721}
722
723/**
724 * megasas_check_reset_gen2 - For controller reset check
725 * @regs: MFI register set
726 */
727static int
728megasas_check_reset_gen2(struct megasas_instance *instance,
729 struct megasas_register_set __iomem *regs)
730{
707e09bd
YB		 731 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
732 return 1;
733 }
734
39a98554 735 return 0;
6610a6b3
YB		 736}
737
738static struct megasas_instance_template megasas_instance_template_gen2 = {
739
740 .fire_cmd = megasas_fire_cmd_gen2,
741 .enable_intr = megasas_enable_intr_gen2,
742 .disable_intr = megasas_disable_intr_gen2,
743 .clear_intr = megasas_clear_intr_gen2,
744 .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
39a98554 745 .adp_reset = megasas_adp_reset_gen2,
746 .check_reset = megasas_check_reset_gen2,
6610a6b3
YB		 747};
748
f9876f0b
SP		 749/**
750* This is the end of set of functions & definitions
39a98554 751* specific to gen2 (deviceid : 0x78, 0x79) controllers
f9876f0b
SP		 752*/
753
c4a3e0a5
BS		 754/**
755 * megasas_issue_polled - Issues a polling command
756 * @instance: Adapter soft state
757 * @cmd: Command packet to be issued
758 *
759 * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
760 */
761static int
762megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
763{
764 int i;
765 u32 msecs = MFI_POLL_TIMEOUT_SECS * 1000;
766
767 struct megasas_header *frame_hdr = &cmd->frame->hdr;
768
769 frame_hdr->cmd_status = 0xFF;
770 frame_hdr->flags |= MFI_FRAME_DONT_POST_IN_REPLY_QUEUE;
771
772 /*
773 * Issue the frame using inbound queue port
774 */
0c79e681
YB		 775 instance->instancet->fire_cmd(instance,
776 cmd->frame_phys_addr, 0, instance->reg_set);
c4a3e0a5
BS		 777
778 /*
779 * Wait for cmd_status to change
780 */
781 for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i++) {
782 rmb();
783 msleep(1);
784 }
785
786 if (frame_hdr->cmd_status == 0xff)
787 return -ETIME;
788
789 return 0;
790}
791
792/**
793 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds
794 * @instance: Adapter soft state
795 * @cmd: Command to be issued
796 *
797 * This function waits on an event for the command to be returned from ISR.
2a3681e5 798 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
c4a3e0a5
BS		 799 * Used to issue ioctl commands.
800 */
801static int
802megasas_issue_blocked_cmd(struct megasas_instance *instance,
803 struct megasas_cmd *cmd)
804{
805 cmd->cmd_status = ENODATA;
806
0c79e681
YB		 807 instance->instancet->fire_cmd(instance,
808 cmd->frame_phys_addr, 0, instance->reg_set);
c4a3e0a5 809
39a98554 810 wait_event(instance->int_cmd_wait_q, cmd->cmd_status != ENODATA);
c4a3e0a5
BS		 811
812 return 0;
813}
814
815/**
816 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd
817 * @instance: Adapter soft state
818 * @cmd_to_abort: Previously issued cmd to be aborted
819 *
820 * MFI firmware can abort previously issued AEN comamnd (automatic event
821 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
2a3681e5
SP		 822 * cmd and waits for return status.
823 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
c4a3e0a5
BS		 824 */
825static int
826megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
827 struct megasas_cmd *cmd_to_abort)
828{
829 struct megasas_cmd *cmd;
830 struct megasas_abort_frame *abort_fr;
831
832 cmd = megasas_get_cmd(instance);
833
834 if (!cmd)
835 return -1;
836
837 abort_fr = &cmd->frame->abort;
838
839 /*
840 * Prepare and issue the abort frame
841 */
842 abort_fr->cmd = MFI_CMD_ABORT;
843 abort_fr->cmd_status = 0xFF;
844 abort_fr->flags = 0;
845 abort_fr->abort_context = cmd_to_abort->index;
846 abort_fr->abort_mfi_phys_addr_lo = cmd_to_abort->frame_phys_addr;
847 abort_fr->abort_mfi_phys_addr_hi = 0;
848
849 cmd->sync_cmd = 1;
850 cmd->cmd_status = 0xFF;
851
0c79e681
YB		 852 instance->instancet->fire_cmd(instance,
853 cmd->frame_phys_addr, 0, instance->reg_set);
c4a3e0a5
BS		 854
855 /*
856 * Wait for this cmd to complete
857 */
39a98554 858 wait_event(instance->abort_cmd_wait_q, cmd->cmd_status != 0xFF);
859 cmd->sync_cmd = 0;
c4a3e0a5
BS		 860
861 megasas_return_cmd(instance, cmd);
862 return 0;
863}
864
865/**
866 * megasas_make_sgl32 - Prepares 32-bit SGL
867 * @instance: Adapter soft state
868 * @scp: SCSI command from the mid-layer
869 * @mfi_sgl: SGL to be filled in
870 *
871 * If successful, this function returns the number of SG elements. Otherwise,
872 * it returnes -1.
873 */
858119e1 874static int
c4a3e0a5
BS		 875megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
876 union megasas_sgl *mfi_sgl)
877{
878 int i;
879 int sge_count;
880 struct scatterlist *os_sgl;
881
155d98f0
FT		 882 sge_count = scsi_dma_map(scp);
883 BUG_ON(sge_count < 0);
c4a3e0a5 884
155d98f0
FT		 885 if (sge_count) {
886 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
887 mfi_sgl->sge32[i].length = sg_dma_len(os_sgl);
888 mfi_sgl->sge32[i].phys_addr = sg_dma_address(os_sgl);
889 }
c4a3e0a5 890 }
c4a3e0a5
BS		 891 return sge_count;
892}
893
894/**
895 * megasas_make_sgl64 - Prepares 64-bit SGL
896 * @instance: Adapter soft state
897 * @scp: SCSI command from the mid-layer
898 * @mfi_sgl: SGL to be filled in
899 *
900 * If successful, this function returns the number of SG elements. Otherwise,
901 * it returnes -1.
902 */
858119e1 903static int
c4a3e0a5
BS		 904megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
905 union megasas_sgl *mfi_sgl)
906{
907 int i;
908 int sge_count;
909 struct scatterlist *os_sgl;
910
155d98f0
FT		 911 sge_count = scsi_dma_map(scp);
912 BUG_ON(sge_count < 0);
c4a3e0a5 913
155d98f0
FT		 914 if (sge_count) {
915 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
916 mfi_sgl->sge64[i].length = sg_dma_len(os_sgl);
917 mfi_sgl->sge64[i].phys_addr = sg_dma_address(os_sgl);
918 }
c4a3e0a5 919 }
c4a3e0a5
BS		 920 return sge_count;
921}
922
f4c9a131
YB		 923/**
924 * megasas_make_sgl_skinny - Prepares IEEE SGL
925 * @instance: Adapter soft state
926 * @scp: SCSI command from the mid-layer
927 * @mfi_sgl: SGL to be filled in
928 *
929 * If successful, this function returns the number of SG elements. Otherwise,
930 * it returnes -1.
931 */
932static int
933megasas_make_sgl_skinny(struct megasas_instance *instance,
934 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
935{
936 int i;
937 int sge_count;
938 struct scatterlist *os_sgl;
939
940 sge_count = scsi_dma_map(scp);
941
942 if (sge_count) {
943 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
944 mfi_sgl->sge_skinny[i].length = sg_dma_len(os_sgl);
945 mfi_sgl->sge_skinny[i].phys_addr =
946 sg_dma_address(os_sgl);
707e09bd 947 mfi_sgl->sge_skinny[i].flag = 0;
f4c9a131
YB		 948 }
949 }
950 return sge_count;
951}
952
b1df99d9
SP		 953 /**
954 * megasas_get_frame_count - Computes the number of frames
d532dbe2 955 * @frame_type : type of frame- io or pthru frame
b1df99d9
SP		 956 * @sge_count : number of sg elements
957 *
958 * Returns the number of frames required for numnber of sge's (sge_count)
959 */
960
f4c9a131
YB		 961static u32 megasas_get_frame_count(struct megasas_instance *instance,
962 u8 sge_count, u8 frame_type)
b1df99d9
SP		 963{
964 int num_cnt;
965 int sge_bytes;
966 u32 sge_sz;
967 u32 frame_count=0;
968
969 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
970 sizeof(struct megasas_sge32);
971
f4c9a131
YB		 972 if (instance->flag_ieee) {
973 sge_sz = sizeof(struct megasas_sge_skinny);
974 }
975
b1df99d9 976 /*
d532dbe2 977 * Main frame can contain 2 SGEs for 64-bit SGLs and
978 * 3 SGEs for 32-bit SGLs for ldio &
979 * 1 SGEs for 64-bit SGLs and
980 * 2 SGEs for 32-bit SGLs for pthru frame
981 */
982 if (unlikely(frame_type == PTHRU_FRAME)) {
f4c9a131
YB		 983 if (instance->flag_ieee == 1) {
984 num_cnt = sge_count - 1;
985 } else if (IS_DMA64)
d532dbe2 986 num_cnt = sge_count - 1;
987 else
988 num_cnt = sge_count - 2;
989 } else {
f4c9a131
YB		 990 if (instance->flag_ieee == 1) {
991 num_cnt = sge_count - 1;
992 } else if (IS_DMA64)
d532dbe2 993 num_cnt = sge_count - 2;
994 else
995 num_cnt = sge_count - 3;
996 }
b1df99d9
SP		 997
998 if(num_cnt>0){
999 sge_bytes = sge_sz * num_cnt;
1000
1001 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1002 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1003 }
1004 /* Main frame */
1005 frame_count +=1;
1006
1007 if (frame_count > 7)
1008 frame_count = 8;
1009 return frame_count;
1010}
1011
c4a3e0a5
BS		 1012/**
1013 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1014 * @instance: Adapter soft state
1015 * @scp: SCSI command
1016 * @cmd: Command to be prepared in
1017 *
1018 * This function prepares CDB commands. These are typcially pass-through
1019 * commands to the devices.
1020 */
858119e1 1021static int
c4a3e0a5
BS		 1022megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1023 struct megasas_cmd *cmd)
1024{
c4a3e0a5
BS		 1025 u32 is_logical;
1026 u32 device_id;
1027 u16 flags = 0;
1028 struct megasas_pthru_frame *pthru;
1029
1030 is_logical = MEGASAS_IS_LOGICAL(scp);
1031 device_id = MEGASAS_DEV_INDEX(instance, scp);
1032 pthru = (struct megasas_pthru_frame *)cmd->frame;
1033
1034 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1035 flags = MFI_FRAME_DIR_WRITE;
1036 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1037 flags = MFI_FRAME_DIR_READ;
1038 else if (scp->sc_data_direction == PCI_DMA_NONE)
1039 flags = MFI_FRAME_DIR_NONE;
1040
f4c9a131
YB		 1041 if (instance->flag_ieee == 1) {
1042 flags |= MFI_FRAME_IEEE;
1043 }
1044
c4a3e0a5
BS		 1045 /*
1046 * Prepare the DCDB frame
1047 */
1048 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1049 pthru->cmd_status = 0x0;
1050 pthru->scsi_status = 0x0;
1051 pthru->target_id = device_id;
1052 pthru->lun = scp->device->lun;
1053 pthru->cdb_len = scp->cmd_len;
1054 pthru->timeout = 0;
780a3762 1055 pthru->pad_0 = 0;
c4a3e0a5 1056 pthru->flags = flags;
155d98f0 1057 pthru->data_xfer_len = scsi_bufflen(scp);
c4a3e0a5
BS		 1058
1059 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1060
8d568253
YB		 1061 /*
1062 * If the command is for the tape device, set the
1063 * pthru timeout to the os layer timeout value.
1064 */
1065 if (scp->device->type == TYPE_TAPE) {
1066 if ((scp->request->timeout / HZ) > 0xFFFF)
1067 pthru->timeout = 0xFFFF;
1068 else
1069 pthru->timeout = scp->request->timeout / HZ;
1070 }
1071
c4a3e0a5
BS		 1072 /*
1073 * Construct SGL
1074 */
f4c9a131
YB		 1075 if (instance->flag_ieee == 1) {
1076 pthru->flags |= MFI_FRAME_SGL64;
1077 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1078 &pthru->sgl);
1079 } else if (IS_DMA64) {
c4a3e0a5
BS		 1080 pthru->flags |= MFI_FRAME_SGL64;
1081 pthru->sge_count = megasas_make_sgl64(instance, scp,
1082 &pthru->sgl);
1083 } else
1084 pthru->sge_count = megasas_make_sgl32(instance, scp,
1085 &pthru->sgl);
1086
bdc6fb8d
YB		 1087 if (pthru->sge_count > instance->max_num_sge) {
1088 printk(KERN_ERR "megasas: DCDB two many SGE NUM=%x\n",
1089 pthru->sge_count);
1090 return 0;
1091 }
1092
c4a3e0a5
BS		 1093 /*
1094 * Sense info specific
1095 */
1096 pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1097 pthru->sense_buf_phys_addr_hi = 0;
1098 pthru->sense_buf_phys_addr_lo = cmd->sense_phys_addr;
1099
c4a3e0a5
BS		 1100 /*
1101 * Compute the total number of frames this command consumes. FW uses
1102 * this number to pull sufficient number of frames from host memory.
1103 */
f4c9a131 1104 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
d532dbe2 1105 PTHRU_FRAME);
c4a3e0a5
BS		 1106
1107 return cmd->frame_count;
1108}
1109
1110/**
1111 * megasas_build_ldio - Prepares IOs to logical devices
1112 * @instance: Adapter soft state
1113 * @scp: SCSI command
fd589a8f 1114 * @cmd: Command to be prepared
c4a3e0a5
BS		 1115 *
1116 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1117 */
858119e1 1118static int
c4a3e0a5
BS		 1119megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1120 struct megasas_cmd *cmd)
1121{
c4a3e0a5
BS		 1122 u32 device_id;
1123 u8 sc = scp->cmnd[0];
1124 u16 flags = 0;
1125 struct megasas_io_frame *ldio;
1126
1127 device_id = MEGASAS_DEV_INDEX(instance, scp);
1128 ldio = (struct megasas_io_frame *)cmd->frame;
1129
1130 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1131 flags = MFI_FRAME_DIR_WRITE;
1132 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1133 flags = MFI_FRAME_DIR_READ;
1134
f4c9a131
YB		 1135 if (instance->flag_ieee == 1) {
1136 flags |= MFI_FRAME_IEEE;
1137 }
1138
c4a3e0a5 1139 /*
b1df99d9 1140 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
c4a3e0a5
BS		 1141 */
1142 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1143 ldio->cmd_status = 0x0;
1144 ldio->scsi_status = 0x0;
1145 ldio->target_id = device_id;
1146 ldio->timeout = 0;
1147 ldio->reserved_0 = 0;
1148 ldio->pad_0 = 0;
1149 ldio->flags = flags;
1150 ldio->start_lba_hi = 0;
1151 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1152
1153 /*
1154 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1155 */
1156 if (scp->cmd_len == 6) {
1157 ldio->lba_count = (u32) scp->cmnd[4];
1158 ldio->start_lba_lo = ((u32) scp->cmnd[1] << 16) |
1159 ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
1160
1161 ldio->start_lba_lo &= 0x1FFFFF;
1162 }
1163
1164 /*
1165 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1166 */
1167 else if (scp->cmd_len == 10) {
1168 ldio->lba_count = (u32) scp->cmnd[8] |
1169 ((u32) scp->cmnd[7] << 8);
1170 ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1171 ((u32) scp->cmnd[3] << 16) |
1172 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1173 }
1174
1175 /*
1176 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1177 */
1178 else if (scp->cmd_len == 12) {
1179 ldio->lba_count = ((u32) scp->cmnd[6] << 24) |
1180 ((u32) scp->cmnd[7] << 16) |
1181 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1182
1183 ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1184 ((u32) scp->cmnd[3] << 16) |
1185 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1186 }
1187
1188 /*
1189 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1190 */
1191 else if (scp->cmd_len == 16) {
1192 ldio->lba_count = ((u32) scp->cmnd[10] << 24) |
1193 ((u32) scp->cmnd[11] << 16) |
1194 ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
1195
1196 ldio->start_lba_lo = ((u32) scp->cmnd[6] << 24) |
1197 ((u32) scp->cmnd[7] << 16) |
1198 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1199
1200 ldio->start_lba_hi = ((u32) scp->cmnd[2] << 24) |
1201 ((u32) scp->cmnd[3] << 16) |
1202 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1203
1204 }
1205
1206 /*
1207 * Construct SGL
1208 */
f4c9a131
YB		 1209 if (instance->flag_ieee) {
1210 ldio->flags |= MFI_FRAME_SGL64;
1211 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1212 &ldio->sgl);
1213 } else if (IS_DMA64) {
c4a3e0a5
BS		 1214 ldio->flags |= MFI_FRAME_SGL64;
1215 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1216 } else
1217 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1218
bdc6fb8d
YB		 1219 if (ldio->sge_count > instance->max_num_sge) {
1220 printk(KERN_ERR "megasas: build_ld_io: sge_count = %x\n",
1221 ldio->sge_count);
1222 return 0;
1223 }
1224
c4a3e0a5
BS		 1225 /*
1226 * Sense info specific
1227 */
1228 ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1229 ldio->sense_buf_phys_addr_hi = 0;
1230 ldio->sense_buf_phys_addr_lo = cmd->sense_phys_addr;
1231
b1df99d9
SP		 1232 /*
1233 * Compute the total number of frames this command consumes. FW uses
1234 * this number to pull sufficient number of frames from host memory.
1235 */
f4c9a131
YB		 1236 cmd->frame_count = megasas_get_frame_count(instance,
1237 ldio->sge_count, IO_FRAME);
c4a3e0a5
BS		 1238
1239 return cmd->frame_count;
1240}
1241
1242/**
cb59aa6a
SP		 1243 * megasas_is_ldio - Checks if the cmd is for logical drive
1244 * @scmd: SCSI command
1245 *
1246 * Called by megasas_queue_command to find out if the command to be queued
1247 * is a logical drive command
c4a3e0a5 1248 */
cb59aa6a 1249static inline int megasas_is_ldio(struct scsi_cmnd *cmd)
c4a3e0a5 1250{
cb59aa6a
SP		 1251 if (!MEGASAS_IS_LOGICAL(cmd))
1252 return 0;
1253 switch (cmd->cmnd[0]) {
1254 case READ_10:
1255 case WRITE_10:
1256 case READ_12:
1257 case WRITE_12:
1258 case READ_6:
1259 case WRITE_6:
1260 case READ_16:
1261 case WRITE_16:
1262 return 1;
1263 default:
1264 return 0;
c4a3e0a5 1265 }
c4a3e0a5
BS		 1266}
1267
658dcedb
SP		 1268 /**
1269 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
1270 * in FW
1271 * @instance: Adapter soft state
1272 */
1273static inline void
1274megasas_dump_pending_frames(struct megasas_instance *instance)
1275{
1276 struct megasas_cmd *cmd;
1277 int i,n;
1278 union megasas_sgl *mfi_sgl;
1279 struct megasas_io_frame *ldio;
1280 struct megasas_pthru_frame *pthru;
1281 u32 sgcount;
1282 u32 max_cmd = instance->max_fw_cmds;
1283
1284 printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1285 printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1286 if (IS_DMA64)
1287 printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1288 else
1289 printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1290
1291 printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1292 for (i = 0; i < max_cmd; i++) {
1293 cmd = instance->cmd_list[i];
1294 if(!cmd->scmd)
1295 continue;
1296 printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1297 if (megasas_is_ldio(cmd->scmd)){
1298 ldio = (struct megasas_io_frame *)cmd->frame;
1299 mfi_sgl = &ldio->sgl;
1300 sgcount = ldio->sge_count;
1301 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);
1302 }
1303 else {
1304 pthru = (struct megasas_pthru_frame *) cmd->frame;
1305 mfi_sgl = &pthru->sgl;
1306 sgcount = pthru->sge_count;
1307 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);
1308 }
1309 if(megasas_dbg_lvl & MEGASAS_DBG_LVL){
1310 for (n = 0; n < sgcount; n++){
1311 if (IS_DMA64)
1312 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) ;
1313 else
1314 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ",mfi_sgl->sge32[n].length , mfi_sgl->sge32[n].phys_addr) ;
1315 }
1316 }
1317 printk(KERN_ERR "\n");
1318 } /*for max_cmd*/
1319 printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1320 for (i = 0; i < max_cmd; i++) {
1321
1322 cmd = instance->cmd_list[i];
1323
1324 if(cmd->sync_cmd == 1){
1325 printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1326 }
1327 }
1328 printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no);
1329}
1330
c4a3e0a5
BS		 1331/**
1332 * megasas_queue_command - Queue entry point
1333 * @scmd: SCSI command to be queued
1334 * @done: Callback entry point
1335 */
1336static int
1337megasas_queue_command(struct scsi_cmnd *scmd, void (*done) (struct scsi_cmnd *))
1338{
1339 u32 frame_count;
c4a3e0a5
BS		 1340 struct megasas_cmd *cmd;
1341 struct megasas_instance *instance;
39a98554 1342 unsigned long flags;
c4a3e0a5
BS		 1343
1344 instance = (struct megasas_instance *)
1345 scmd->device->host->hostdata;
af37acfb 1346
39a98554 1347 if (instance->issuepend_done == 0)
af37acfb
SP		 1348 return SCSI_MLQUEUE_HOST_BUSY;
1349
39a98554 1350 spin_lock_irqsave(&instance->hba_lock, flags);
1351 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
1352 spin_unlock_irqrestore(&instance->hba_lock, flags);
1353 return SCSI_MLQUEUE_HOST_BUSY;
1354 }
1355
1356 spin_unlock_irqrestore(&instance->hba_lock, flags);
1357
c4a3e0a5
BS		 1358 scmd->scsi_done = done;
1359 scmd->result = 0;
1360
cb59aa6a
SP		 1361 if (MEGASAS_IS_LOGICAL(scmd) &&
1362 (scmd->device->id >= MEGASAS_MAX_LD || scmd->device->lun)) {
1363 scmd->result = DID_BAD_TARGET << 16;
1364 goto out_done;
c4a3e0a5
BS		 1365 }
1366
02b01e01
SP		 1367 switch (scmd->cmnd[0]) {
1368 case SYNCHRONIZE_CACHE:
1369 /*
1370 * FW takes care of flush cache on its own
1371 * No need to send it down
1372 */
1373 scmd->result = DID_OK << 16;
1374 goto out_done;
1375 default:
1376 break;
1377 }
1378
cb59aa6a
SP		 1379 cmd = megasas_get_cmd(instance);
1380 if (!cmd)
1381 return SCSI_MLQUEUE_HOST_BUSY;
1382
1383 /*
1384 * Logical drive command
1385 */
1386 if (megasas_is_ldio(scmd))
1387 frame_count = megasas_build_ldio(instance, scmd, cmd);
1388 else
1389 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1390
1391 if (!frame_count)
1392 goto out_return_cmd;
1393
c4a3e0a5 1394 cmd->scmd = scmd;
05e9ebbe 1395 scmd->SCp.ptr = (char *)cmd;
c4a3e0a5
BS		 1396
1397 /*
1398 * Issue the command to the FW
1399 */
e4a082c7 1400 atomic_inc(&instance->fw_outstanding);
c4a3e0a5 1401
0c79e681
YB		 1402 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1403 cmd->frame_count-1, instance->reg_set);
ad84db2e 1404 /*
1405 * Check if we have pend cmds to be completed
1406 */
1407 if (poll_mode_io && atomic_read(&instance->fw_outstanding))
1408 tasklet_schedule(&instance->isr_tasklet);
1409
c4a3e0a5
BS		 1410
1411 return 0;
cb59aa6a
SP		 1412
1413 out_return_cmd:
1414 megasas_return_cmd(instance, cmd);
1415 out_done:
1416 done(scmd);
1417 return 0;
c4a3e0a5
BS		 1418}
1419
044833b5
YB		 1420static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1421{
1422 int i;
1423
1424 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1425
1426 if ((megasas_mgmt_info.instance[i]) &&
1427 (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1428 return megasas_mgmt_info.instance[i];
1429 }
1430
1431 return NULL;
1432}
1433
147aab6a
CH		 1434static int megasas_slave_configure(struct scsi_device *sdev)
1435{
044833b5
YB		 1436 u16 pd_index = 0;
1437 struct megasas_instance *instance ;
1438
1439 instance = megasas_lookup_instance(sdev->host->host_no);
1440
147aab6a 1441 /*
044833b5
YB		 1442 * Don't export physical disk devices to the disk driver.
1443 *
1444 * FIXME: Currently we don't export them to the midlayer at all.
1445 * That will be fixed once LSI engineers have audited the
1446 * firmware for possible issues.
1447 */
1448 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS &&
1449 sdev->type == TYPE_DISK) {
1450 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1451 sdev->id;
1452 if (instance->pd_list[pd_index].driveState ==
1453 MR_PD_STATE_SYSTEM) {
1454 blk_queue_rq_timeout(sdev->request_queue,
1455 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
1456 return 0;
1457 }
147aab6a 1458 return -ENXIO;
044833b5 1459 }
e5b3a65f
CH		 1460
1461 /*
044833b5
YB		 1462 * The RAID firmware may require extended timeouts.
1463 */
1464 blk_queue_rq_timeout(sdev->request_queue,
1465 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
1466 return 0;
1467}
1468
1469static int megasas_slave_alloc(struct scsi_device *sdev)
1470{
1471 u16 pd_index = 0;
1472 struct megasas_instance *instance ;
1473 instance = megasas_lookup_instance(sdev->host->host_no);
1474 if ((sdev->channel < MEGASAS_MAX_PD_CHANNELS) &&
1475 (sdev->type == TYPE_DISK)) {
1476 /*
1477 * Open the OS scan to the SYSTEM PD
1478 */
1479 pd_index =
1480 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1481 sdev->id;
1482 if ((instance->pd_list[pd_index].driveState ==
1483 MR_PD_STATE_SYSTEM) &&
1484 (instance->pd_list[pd_index].driveType ==
1485 TYPE_DISK)) {
1486 return 0;
1487 }
1488 return -ENXIO;
1489 }
147aab6a
CH		 1490 return 0;
1491}
1492
39a98554 1493static void megaraid_sas_kill_hba(struct megasas_instance *instance)
1494{
1495 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1496 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
1497 writel(MFI_STOP_ADP,
1498 &instance->reg_set->reserved_0[0]);
1499 } else {
1500 writel(MFI_STOP_ADP,
1501 &instance->reg_set->inbound_doorbell);
1502 }
1503}
1504
7343eb65 1505/**
1506 * megasas_complete_cmd_dpc - Returns FW's controller structure
1507 * @instance_addr: Address of adapter soft state
1508 *
1509 * Tasklet to complete cmds
1510 */
1511static void megasas_complete_cmd_dpc(unsigned long instance_addr)
1512{
1513 u32 producer;
1514 u32 consumer;
1515 u32 context;
1516 struct megasas_cmd *cmd;
1517 struct megasas_instance *instance =
1518 (struct megasas_instance *)instance_addr;
1519 unsigned long flags;
1520
1521 /* If we have already declared adapter dead, donot complete cmds */
39a98554 1522 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR )
7343eb65 1523 return;
1524
1525 spin_lock_irqsave(&instance->completion_lock, flags);
1526
1527 producer = *instance->producer;
1528 consumer = *instance->consumer;
1529
1530 while (consumer != producer) {
1531 context = instance->reply_queue[consumer];
39a98554 1532 if (context >= instance->max_fw_cmds) {
1533 printk(KERN_ERR "Unexpected context value %x\n",
1534 context);
1535 BUG();
1536 }
7343eb65 1537
1538 cmd = instance->cmd_list[context];
1539
1540 megasas_complete_cmd(instance, cmd, DID_OK);
1541
1542 consumer++;
1543 if (consumer == (instance->max_fw_cmds + 1)) {
1544 consumer = 0;
1545 }
1546 }
1547
1548 *instance->consumer = producer;
1549
1550 spin_unlock_irqrestore(&instance->completion_lock, flags);
1551
1552 /*
1553 * Check if we can restore can_queue
1554 */
1555 if (instance->flag & MEGASAS_FW_BUSY
1556 && time_after(jiffies, instance->last_time + 5 * HZ)
1557 && atomic_read(&instance->fw_outstanding) < 17) {
1558
1559 spin_lock_irqsave(instance->host->host_lock, flags);
1560 instance->flag &= ~MEGASAS_FW_BUSY;
7bebf5c7
YB		 1561 if ((instance->pdev->device ==
1562 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1563 (instance->pdev->device ==
1564 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
1565 instance->host->can_queue =
1566 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
1567 } else
1568 instance->host->can_queue =
7343eb65 1569 instance->max_fw_cmds - MEGASAS_INT_CMDS;
1570
1571 spin_unlock_irqrestore(instance->host->host_lock, flags);
1572 }
1573}
1574
707e09bd
YB		 1575static void
1576megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
1577
1578static void
1579process_fw_state_change_wq(struct work_struct *work);
1580
1581void megasas_do_ocr(struct megasas_instance *instance)
1582{
1583 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
1584 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
1585 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
1586 *instance->consumer = MEGASAS_ADPRESET_INPROG_SIGN;
1587 }
1588 instance->instancet->disable_intr(instance->reg_set);
1589 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
1590 instance->issuepend_done = 0;
1591
1592 atomic_set(&instance->fw_outstanding, 0);
1593 megasas_internal_reset_defer_cmds(instance);
1594 process_fw_state_change_wq(&instance->work_init);
1595}
1596
c4a3e0a5
BS		 1597/**
1598 * megasas_wait_for_outstanding - Wait for all outstanding cmds
1599 * @instance: Adapter soft state
1600 *
1601 * This function waits for upto MEGASAS_RESET_WAIT_TIME seconds for FW to
1602 * complete all its outstanding commands. Returns error if one or more IOs
1603 * are pending after this time period. It also marks the controller dead.
1604 */
1605static int megasas_wait_for_outstanding(struct megasas_instance *instance)
1606{
1607 int i;
39a98554 1608 u32 reset_index;
c4a3e0a5 1609 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
39a98554 1610 u8 adprecovery;
1611 unsigned long flags;
1612 struct list_head clist_local;
1613 struct megasas_cmd *reset_cmd;
707e09bd
YB		 1614 u32 fw_state;
1615 u8 kill_adapter_flag;
39a98554 1616
1617 spin_lock_irqsave(&instance->hba_lock, flags);
1618 adprecovery = instance->adprecovery;
1619 spin_unlock_irqrestore(&instance->hba_lock, flags);
1620
1621 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
1622
1623 INIT_LIST_HEAD(&clist_local);
1624 spin_lock_irqsave(&instance->hba_lock, flags);
1625 list_splice_init(&instance->internal_reset_pending_q,
1626 &clist_local);
1627 spin_unlock_irqrestore(&instance->hba_lock, flags);
1628
1629 printk(KERN_NOTICE "megasas: HBA reset wait ...\n");
1630 for (i = 0; i < wait_time; i++) {
1631 msleep(1000);
1632 spin_lock_irqsave(&instance->hba_lock, flags);
1633 adprecovery = instance->adprecovery;
1634 spin_unlock_irqrestore(&instance->hba_lock, flags);
1635 if (adprecovery == MEGASAS_HBA_OPERATIONAL)
1636 break;
1637 }
1638
1639 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
1640 printk(KERN_NOTICE "megasas: reset: Stopping HBA.\n");
1641 spin_lock_irqsave(&instance->hba_lock, flags);
1642 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
1643 spin_unlock_irqrestore(&instance->hba_lock, flags);
1644 return FAILED;
1645 }
1646
1647 reset_index = 0;
1648 while (!list_empty(&clist_local)) {
1649 reset_cmd = list_entry((&clist_local)->next,
1650 struct megasas_cmd, list);
1651 list_del_init(&reset_cmd->list);
1652 if (reset_cmd->scmd) {
1653 reset_cmd->scmd->result = DID_RESET << 16;
1654 printk(KERN_NOTICE "%d:%p reset [%02x], %#lx\n",
1655 reset_index, reset_cmd,
1656 reset_cmd->scmd->cmnd[0],
1657 reset_cmd->scmd->serial_number);
1658
1659 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
1660 megasas_return_cmd(instance, reset_cmd);
1661 } else if (reset_cmd->sync_cmd) {
1662 printk(KERN_NOTICE "megasas:%p synch cmds"
1663 "reset queue\n",
1664 reset_cmd);
1665
1666 reset_cmd->cmd_status = ENODATA;
1667 instance->instancet->fire_cmd(instance,
1668 reset_cmd->frame_phys_addr,
1669 0, instance->reg_set);
1670 } else {
1671 printk(KERN_NOTICE "megasas: %p unexpected"
1672 "cmds lst\n",
1673 reset_cmd);
1674 }
1675 reset_index++;
1676 }
1677
1678 return SUCCESS;
1679 }
c4a3e0a5
BS		 1680
1681 for (i = 0; i < wait_time; i++) {
1682
e4a082c7
SP		 1683 int outstanding = atomic_read(&instance->fw_outstanding);
1684
1685 if (!outstanding)
c4a3e0a5
BS		 1686 break;
1687
1688 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
1689 printk(KERN_NOTICE "megasas: [%2d]waiting for %d "
e4a082c7 1690 "commands to complete\n",i,outstanding);
7343eb65 1691 /*
1692 * Call cmd completion routine. Cmd to be
1693 * be completed directly without depending on isr.
1694 */
1695 megasas_complete_cmd_dpc((unsigned long)instance);
c4a3e0a5
BS		 1696 }
1697
1698 msleep(1000);
1699 }
1700
707e09bd
YB		 1701 i = 0;
1702 kill_adapter_flag = 0;
1703 do {
1704 fw_state = instance->instancet->read_fw_status_reg(
1705 instance->reg_set) & MFI_STATE_MASK;
1706 if ((fw_state == MFI_STATE_FAULT) &&
1707 (instance->disableOnlineCtrlReset == 0)) {
1708 if (i == 3) {
1709 kill_adapter_flag = 2;
1710 break;
1711 }
1712 megasas_do_ocr(instance);
1713 kill_adapter_flag = 1;
1714
1715 /* wait for 1 secs to let FW finish the pending cmds */
1716 msleep(1000);
1717 }
1718 i++;
1719 } while (i <= 3);
1720
1721 if (atomic_read(&instance->fw_outstanding) &&
1722 !kill_adapter_flag) {
1723 if (instance->disableOnlineCtrlReset == 0) {
1724
1725 megasas_do_ocr(instance);
1726
1727 /* wait for 5 secs to let FW finish the pending cmds */
1728 for (i = 0; i < wait_time; i++) {
1729 int outstanding =
1730 atomic_read(&instance->fw_outstanding);
1731 if (!outstanding)
1732 return SUCCESS;
1733 msleep(1000);
1734 }
1735 }
1736 }
1737
1738 if (atomic_read(&instance->fw_outstanding) ||
1739 (kill_adapter_flag == 2)) {
39a98554 1740 printk(KERN_NOTICE "megaraid_sas: pending cmds after reset\n");
e3bbff9f
SP		 1741 /*
1742 * Send signal to FW to stop processing any pending cmds.
1743 * The controller will be taken offline by the OS now.
1744 */
0c79e681
YB		 1745 if ((instance->pdev->device ==
1746 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1747 (instance->pdev->device ==
1748 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
1749 writel(MFI_STOP_ADP,
1750 &instance->reg_set->reserved_0[0]);
1751 } else {
1752 writel(MFI_STOP_ADP,
e3bbff9f 1753 &instance->reg_set->inbound_doorbell);
0c79e681 1754 }
658dcedb 1755 megasas_dump_pending_frames(instance);
39a98554 1756 spin_lock_irqsave(&instance->hba_lock, flags);
1757 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
1758 spin_unlock_irqrestore(&instance->hba_lock, flags);
c4a3e0a5
BS		 1759 return FAILED;
1760 }
1761
39a98554 1762 printk(KERN_NOTICE "megaraid_sas: no pending cmds after reset\n");
1763
c4a3e0a5
BS		 1764 return SUCCESS;
1765}
1766
1767/**
1768 * megasas_generic_reset - Generic reset routine
1769 * @scmd: Mid-layer SCSI command
1770 *
1771 * This routine implements a generic reset handler for device, bus and host
1772 * reset requests. Device, bus and host specific reset handlers can use this
1773 * function after they do their specific tasks.
1774 */
1775static int megasas_generic_reset(struct scsi_cmnd *scmd)
1776{
1777 int ret_val;
1778 struct megasas_instance *instance;
1779
1780 instance = (struct megasas_instance *)scmd->device->host->hostdata;
1781
05e9ebbe
SP		 1782 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET -%ld cmd=%x retries=%x\n",
1783 scmd->serial_number, scmd->cmnd[0], scmd->retries);
c4a3e0a5 1784
39a98554 1785 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
c4a3e0a5
BS		 1786 printk(KERN_ERR "megasas: cannot recover from previous reset "
1787 "failures\n");
1788 return FAILED;
1789 }
1790
c4a3e0a5 1791 ret_val = megasas_wait_for_outstanding(instance);
c4a3e0a5
BS		 1792 if (ret_val == SUCCESS)
1793 printk(KERN_NOTICE "megasas: reset successful \n");
1794 else
1795 printk(KERN_ERR "megasas: failed to do reset\n");
1796
c4a3e0a5
BS		 1797 return ret_val;
1798}
1799
05e9ebbe
SP		 1800/**
1801 * megasas_reset_timer - quiesce the adapter if required
1802 * @scmd: scsi cmnd
1803 *
1804 * Sets the FW busy flag and reduces the host->can_queue if the
1805 * cmd has not been completed within the timeout period.
1806 */
1807static enum
242f9dcb 1808blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
05e9ebbe
SP		 1809{
1810 struct megasas_cmd *cmd = (struct megasas_cmd *)scmd->SCp.ptr;
1811 struct megasas_instance *instance;
1812 unsigned long flags;
1813
1814 if (time_after(jiffies, scmd->jiffies_at_alloc +
1815 (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) {
242f9dcb 1816 return BLK_EH_NOT_HANDLED;
05e9ebbe
SP		 1817 }
1818
1819 instance = cmd->instance;
1820 if (!(instance->flag & MEGASAS_FW_BUSY)) {
1821 /* FW is busy, throttle IO */
1822 spin_lock_irqsave(instance->host->host_lock, flags);
1823
1824 instance->host->can_queue = 16;
1825 instance->last_time = jiffies;
1826 instance->flag |= MEGASAS_FW_BUSY;
1827
1828 spin_unlock_irqrestore(instance->host->host_lock, flags);
1829 }
242f9dcb 1830 return BLK_EH_RESET_TIMER;
05e9ebbe
SP		 1831}
1832
c4a3e0a5
BS		 1833/**
1834 * megasas_reset_device - Device reset handler entry point
1835 */
1836static int megasas_reset_device(struct scsi_cmnd *scmd)
1837{
1838 int ret;
1839
1840 /*
1841 * First wait for all commands to complete
1842 */
1843 ret = megasas_generic_reset(scmd);
1844
1845 return ret;
1846}
1847
1848/**
1849 * megasas_reset_bus_host - Bus & host reset handler entry point
1850 */
1851static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
1852{
1853 int ret;
1854
1855 /*
80682fa9 1856 * First wait for all commands to complete
c4a3e0a5
BS		 1857 */
1858 ret = megasas_generic_reset(scmd);
1859
1860 return ret;
1861}
1862
cf62a0a5
SP		 1863/**
1864 * megasas_bios_param - Returns disk geometry for a disk
1865 * @sdev: device handle
1866 * @bdev: block device
1867 * @capacity: drive capacity
1868 * @geom: geometry parameters
1869 */
1870static int
1871megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
1872 sector_t capacity, int geom[])
1873{
1874 int heads;
1875 int sectors;
1876 sector_t cylinders;
1877 unsigned long tmp;
1878 /* Default heads (64) & sectors (32) */
1879 heads = 64;
1880 sectors = 32;
1881
1882 tmp = heads * sectors;
1883 cylinders = capacity;
1884
1885 sector_div(cylinders, tmp);
1886
1887 /*
1888 * Handle extended translation size for logical drives > 1Gb
1889 */
1890
1891 if (capacity >= 0x200000) {
1892 heads = 255;
1893 sectors = 63;
1894 tmp = heads*sectors;
1895 cylinders = capacity;
1896 sector_div(cylinders, tmp);
1897 }
1898
1899 geom[0] = heads;
1900 geom[1] = sectors;
1901 geom[2] = cylinders;
1902
1903 return 0;
1904}
1905
7e8a75f4
YB		 1906static void megasas_aen_polling(struct work_struct *work);
1907
c4a3e0a5
BS		 1908/**
1909 * megasas_service_aen - Processes an event notification
1910 * @instance: Adapter soft state
1911 * @cmd: AEN command completed by the ISR
1912 *
1913 * For AEN, driver sends a command down to FW that is held by the FW till an
1914 * event occurs. When an event of interest occurs, FW completes the command
1915 * that it was previously holding.
1916 *
1917 * This routines sends SIGIO signal to processes that have registered with the
1918 * driver for AEN.
1919 */
1920static void
1921megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
1922{
c3518837 1923 unsigned long flags;
c4a3e0a5
BS		 1924 /*
1925 * Don't signal app if it is just an aborted previously registered aen
1926 */
c3518837
YB		 1927 if ((!cmd->abort_aen) && (instance->unload == 0)) {
1928 spin_lock_irqsave(&poll_aen_lock, flags);
1929 megasas_poll_wait_aen = 1;
1930 spin_unlock_irqrestore(&poll_aen_lock, flags);
1931 wake_up(&megasas_poll_wait);
c4a3e0a5 1932 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
c3518837 1933 }
c4a3e0a5
BS		 1934 else
1935 cmd->abort_aen = 0;
1936
1937 instance->aen_cmd = NULL;
1938 megasas_return_cmd(instance, cmd);
7e8a75f4 1939
39a98554 1940 if ((instance->unload == 0) &&
1941 ((instance->issuepend_done == 1))) {
7e8a75f4
YB		 1942 struct megasas_aen_event *ev;
1943 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
1944 if (!ev) {
1945 printk(KERN_ERR "megasas_service_aen: out of memory\n");
1946 } else {
1947 ev->instance = instance;
1948 instance->ev = ev;
1949 INIT_WORK(&ev->hotplug_work, megasas_aen_polling);
1950 schedule_delayed_work(
1951 (struct delayed_work *)&ev->hotplug_work, 0);
1952 }
1953 }
c4a3e0a5
BS		 1954}
1955
1956/*
1957 * Scsi host template for megaraid_sas driver
1958 */
1959static struct scsi_host_template megasas_template = {
1960
1961 .module = THIS_MODULE,
f28cd7cf 1962 .name = "LSI SAS based MegaRAID driver",
c4a3e0a5 1963 .proc_name = "megaraid_sas",
147aab6a 1964 .slave_configure = megasas_slave_configure,
044833b5 1965 .slave_alloc = megasas_slave_alloc,
c4a3e0a5
BS		 1966 .queuecommand = megasas_queue_command,
1967 .eh_device_reset_handler = megasas_reset_device,
1968 .eh_bus_reset_handler = megasas_reset_bus_host,
1969 .eh_host_reset_handler = megasas_reset_bus_host,
05e9ebbe 1970 .eh_timed_out = megasas_reset_timer,
cf62a0a5 1971 .bios_param = megasas_bios_param,
c4a3e0a5
BS		 1972 .use_clustering = ENABLE_CLUSTERING,
1973};
1974
1975/**
1976 * megasas_complete_int_cmd - Completes an internal command
1977 * @instance: Adapter soft state
1978 * @cmd: Command to be completed
1979 *
1980 * The megasas_issue_blocked_cmd() function waits for a command to complete
1981 * after it issues a command. This function wakes up that waiting routine by
1982 * calling wake_up() on the wait queue.
1983 */
1984static void
1985megasas_complete_int_cmd(struct megasas_instance *instance,
1986 struct megasas_cmd *cmd)
1987{
1988 cmd->cmd_status = cmd->frame->io.cmd_status;
1989
1990 if (cmd->cmd_status == ENODATA) {
1991 cmd->cmd_status = 0;
1992 }
1993 wake_up(&instance->int_cmd_wait_q);
1994}
1995
1996/**
1997 * megasas_complete_abort - Completes aborting a command
1998 * @instance: Adapter soft state
1999 * @cmd: Cmd that was issued to abort another cmd
2000 *
2001 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
2002 * after it issues an abort on a previously issued command. This function
2003 * wakes up all functions waiting on the same wait queue.
2004 */
2005static void
2006megasas_complete_abort(struct megasas_instance *instance,
2007 struct megasas_cmd *cmd)
2008{
2009 if (cmd->sync_cmd) {
2010 cmd->sync_cmd = 0;
2011 cmd->cmd_status = 0;
2012 wake_up(&instance->abort_cmd_wait_q);
2013 }
2014
2015 return;
2016}
2017
c4a3e0a5
BS		 2018/**
2019 * megasas_complete_cmd - Completes a command
2020 * @instance: Adapter soft state
2021 * @cmd: Command to be completed
2022 * @alt_status: If non-zero, use this value as status to
2023 * SCSI mid-layer instead of the value returned
2024 * by the FW. This should be used if caller wants
2025 * an alternate status (as in the case of aborted
2026 * commands)
2027 */
858119e1 2028static void
c4a3e0a5
BS		 2029megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
2030 u8 alt_status)
2031{
2032 int exception = 0;
2033 struct megasas_header *hdr = &cmd->frame->hdr;
c3518837 2034 unsigned long flags;
c4a3e0a5 2035
39a98554 2036 /* flag for the retry reset */
2037 cmd->retry_for_fw_reset = 0;
2038
05e9ebbe
SP		 2039 if (cmd->scmd)
2040 cmd->scmd->SCp.ptr = NULL;
c4a3e0a5
BS		 2041
2042 switch (hdr->cmd) {
2043
2044 case MFI_CMD_PD_SCSI_IO:
2045 case MFI_CMD_LD_SCSI_IO:
2046
2047 /*
2048 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
2049 * issued either through an IO path or an IOCTL path. If it
2050 * was via IOCTL, we will send it to internal completion.
2051 */
2052 if (cmd->sync_cmd) {
2053 cmd->sync_cmd = 0;
2054 megasas_complete_int_cmd(instance, cmd);
2055 break;
2056 }
2057
c4a3e0a5
BS		 2058 case MFI_CMD_LD_READ:
2059 case MFI_CMD_LD_WRITE:
2060
2061 if (alt_status) {
2062 cmd->scmd->result = alt_status << 16;
2063 exception = 1;
2064 }
2065
2066 if (exception) {
2067
e4a082c7 2068 atomic_dec(&instance->fw_outstanding);
c4a3e0a5 2069
155d98f0 2070 scsi_dma_unmap(cmd->scmd);
c4a3e0a5
BS		 2071 cmd->scmd->scsi_done(cmd->scmd);
2072 megasas_return_cmd(instance, cmd);
2073
2074 break;
2075 }
2076
2077 switch (hdr->cmd_status) {
2078
2079 case MFI_STAT_OK:
2080 cmd->scmd->result = DID_OK << 16;
2081 break;
2082
2083 case MFI_STAT_SCSI_IO_FAILED:
2084 case MFI_STAT_LD_INIT_IN_PROGRESS:
2085 cmd->scmd->result =
2086 (DID_ERROR << 16) | hdr->scsi_status;
2087 break;
2088
2089 case MFI_STAT_SCSI_DONE_WITH_ERROR:
2090
2091 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
2092
2093 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
2094 memset(cmd->scmd->sense_buffer, 0,
2095 SCSI_SENSE_BUFFERSIZE);
2096 memcpy(cmd->scmd->sense_buffer, cmd->sense,
2097 hdr->sense_len);
2098
2099 cmd->scmd->result |= DRIVER_SENSE << 24;
2100 }
2101
2102 break;
2103
2104 case MFI_STAT_LD_OFFLINE:
2105 case MFI_STAT_DEVICE_NOT_FOUND:
2106 cmd->scmd->result = DID_BAD_TARGET << 16;
2107 break;
2108
2109 default:
2110 printk(KERN_DEBUG "megasas: MFI FW status %#x\n",
2111 hdr->cmd_status);
2112 cmd->scmd->result = DID_ERROR << 16;
2113 break;
2114 }
2115
e4a082c7 2116 atomic_dec(&instance->fw_outstanding);
c4a3e0a5 2117
155d98f0 2118 scsi_dma_unmap(cmd->scmd);
c4a3e0a5
BS		 2119 cmd->scmd->scsi_done(cmd->scmd);
2120 megasas_return_cmd(instance, cmd);
2121
2122 break;
2123
2124 case MFI_CMD_SMP:
2125 case MFI_CMD_STP:
2126 case MFI_CMD_DCMD:
c3518837
YB		 2127 if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
2128 cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET) {
2129 spin_lock_irqsave(&poll_aen_lock, flags);
2130 megasas_poll_wait_aen = 0;
2131 spin_unlock_irqrestore(&poll_aen_lock, flags);
2132 }
c4a3e0a5
BS		 2133
2134 /*
2135 * See if got an event notification
2136 */
2137 if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_WAIT)
2138 megasas_service_aen(instance, cmd);
2139 else
2140 megasas_complete_int_cmd(instance, cmd);
2141
2142 break;
2143
2144 case MFI_CMD_ABORT:
2145 /*
2146 * Cmd issued to abort another cmd returned
2147 */
2148 megasas_complete_abort(instance, cmd);
2149 break;
2150
2151 default:
2152 printk("megasas: Unknown command completed! [0x%X]\n",
2153 hdr->cmd);
2154 break;
2155 }
2156}
2157
39a98554 2158/**
2159 * megasas_issue_pending_cmds_again - issue all pending cmds
2160 * in FW again because of the fw reset
2161 * @instance: Adapter soft state
2162 */
2163static inline void
2164megasas_issue_pending_cmds_again(struct megasas_instance *instance)
2165{
2166 struct megasas_cmd *cmd;
2167 struct list_head clist_local;
2168 union megasas_evt_class_locale class_locale;
2169 unsigned long flags;
2170 u32 seq_num;
2171
2172 INIT_LIST_HEAD(&clist_local);
2173 spin_lock_irqsave(&instance->hba_lock, flags);
2174 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
2175 spin_unlock_irqrestore(&instance->hba_lock, flags);
2176
2177 while (!list_empty(&clist_local)) {
2178 cmd = list_entry((&clist_local)->next,
2179 struct megasas_cmd, list);
2180 list_del_init(&cmd->list);
2181
2182 if (cmd->sync_cmd || cmd->scmd) {
2183 printk(KERN_NOTICE "megaraid_sas: command %p, %p:%d"
2184 "detected to be pending while HBA reset.\n",
2185 cmd, cmd->scmd, cmd->sync_cmd);
2186
2187 cmd->retry_for_fw_reset++;
2188
2189 if (cmd->retry_for_fw_reset == 3) {
2190 printk(KERN_NOTICE "megaraid_sas: cmd %p, %p:%d"
2191 "was tried multiple times during reset."
2192 "Shutting down the HBA\n",
2193 cmd, cmd->scmd, cmd->sync_cmd);
2194 megaraid_sas_kill_hba(instance);
2195
2196 instance->adprecovery =
2197 MEGASAS_HW_CRITICAL_ERROR;
2198 return;
2199 }
2200 }
2201
2202 if (cmd->sync_cmd == 1) {
2203 if (cmd->scmd) {
2204 printk(KERN_NOTICE "megaraid_sas: unexpected"
2205 "cmd attached to internal command!\n");
2206 }
2207 printk(KERN_NOTICE "megasas: %p synchronous cmd"
2208 "on the internal reset queue,"
2209 "issue it again.\n", cmd);
2210 cmd->cmd_status = ENODATA;
2211 instance->instancet->fire_cmd(instance,
2212 cmd->frame_phys_addr ,
2213 0, instance->reg_set);
2214 } else if (cmd->scmd) {
2215 printk(KERN_NOTICE "megasas: %p scsi cmd [%02x],%#lx"
2216 "detected on the internal queue, issue again.\n",
2217 cmd, cmd->scmd->cmnd[0], cmd->scmd->serial_number);
2218
2219 atomic_inc(&instance->fw_outstanding);
2220 instance->instancet->fire_cmd(instance,
2221 cmd->frame_phys_addr,
2222 cmd->frame_count-1, instance->reg_set);
2223 } else {
2224 printk(KERN_NOTICE "megasas: %p unexpected cmd on the"
2225 "internal reset defer list while re-issue!!\n",
2226 cmd);
2227 }
2228 }
2229
2230 if (instance->aen_cmd) {
2231 printk(KERN_NOTICE "megaraid_sas: aen_cmd in def process\n");
2232 megasas_return_cmd(instance, instance->aen_cmd);
2233
2234 instance->aen_cmd = NULL;
2235 }
2236
2237 /*
2238 * Initiate AEN (Asynchronous Event Notification)
2239 */
2240 seq_num = instance->last_seq_num;
2241 class_locale.members.reserved = 0;
2242 class_locale.members.locale = MR_EVT_LOCALE_ALL;
2243 class_locale.members.class = MR_EVT_CLASS_DEBUG;
2244
2245 megasas_register_aen(instance, seq_num, class_locale.word);
2246}
2247
2248/**
2249 * Move the internal reset pending commands to a deferred queue.
2250 *
2251 * We move the commands pending at internal reset time to a
2252 * pending queue. This queue would be flushed after successful
2253 * completion of the internal reset sequence. if the internal reset
2254 * did not complete in time, the kernel reset handler would flush
2255 * these commands.
2256 **/
2257static void
2258megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
2259{
2260 struct megasas_cmd *cmd;
2261 int i;
2262 u32 max_cmd = instance->max_fw_cmds;
2263 u32 defer_index;
2264 unsigned long flags;
2265
2266 defer_index = 0;
2267 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
2268 for (i = 0; i < max_cmd; i++) {
2269 cmd = instance->cmd_list[i];
2270 if (cmd->sync_cmd == 1 || cmd->scmd) {
2271 printk(KERN_NOTICE "megasas: moving cmd[%d]:%p:%d:%p"
2272 "on the defer queue as internal\n",
2273 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
2274
2275 if (!list_empty(&cmd->list)) {
2276 printk(KERN_NOTICE "megaraid_sas: ERROR while"
2277 " moving this cmd:%p, %d %p, it was"
2278 "discovered on some list?\n",
2279 cmd, cmd->sync_cmd, cmd->scmd);
2280
2281 list_del_init(&cmd->list);
2282 }
2283 defer_index++;
2284 list_add_tail(&cmd->list,
2285 &instance->internal_reset_pending_q);
2286 }
2287 }
2288 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
2289}
2290
2291
2292static void
2293process_fw_state_change_wq(struct work_struct *work)
2294{
2295 struct megasas_instance *instance =
2296 container_of(work, struct megasas_instance, work_init);
2297 u32 wait;
2298 unsigned long flags;
2299
2300 if (instance->adprecovery != MEGASAS_ADPRESET_SM_INFAULT) {
2301 printk(KERN_NOTICE "megaraid_sas: error, recovery st %x \n",
2302 instance->adprecovery);
2303 return ;
2304 }
2305
2306 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) {
2307 printk(KERN_NOTICE "megaraid_sas: FW detected to be in fault"
2308 "state, restarting it...\n");
2309
2310 instance->instancet->disable_intr(instance->reg_set);
2311 atomic_set(&instance->fw_outstanding, 0);
2312
2313 atomic_set(&instance->fw_reset_no_pci_access, 1);
2314 instance->instancet->adp_reset(instance, instance->reg_set);
2315 atomic_set(&instance->fw_reset_no_pci_access, 0 );
2316
2317 printk(KERN_NOTICE "megaraid_sas: FW restarted successfully,"
2318 "initiating next stage...\n");
2319
2320 printk(KERN_NOTICE "megaraid_sas: HBA recovery state machine,"
2321 "state 2 starting...\n");
2322
2323 /*waitting for about 20 second before start the second init*/
2324 for (wait = 0; wait < 30; wait++) {
2325 msleep(1000);
2326 }
2327
2328 if (megasas_transition_to_ready(instance)) {
2329 printk(KERN_NOTICE "megaraid_sas:adapter not ready\n");
2330
2331 megaraid_sas_kill_hba(instance);
2332 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2333 return ;
2334 }
2335
2336 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2337 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2338 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
2339 ) {
2340 *instance->consumer = *instance->producer;
2341 } else {
2342 *instance->consumer = 0;
2343 *instance->producer = 0;
2344 }
2345
2346 megasas_issue_init_mfi(instance);
2347
2348 spin_lock_irqsave(&instance->hba_lock, flags);
2349 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
2350 spin_unlock_irqrestore(&instance->hba_lock, flags);
2351 instance->instancet->enable_intr(instance->reg_set);
2352
2353 megasas_issue_pending_cmds_again(instance);
2354 instance->issuepend_done = 1;
2355 }
2356 return ;
2357}
2358
c4a3e0a5
BS		 2359/**
2360 * megasas_deplete_reply_queue - Processes all completed commands
2361 * @instance: Adapter soft state
2362 * @alt_status: Alternate status to be returned to
2363 * SCSI mid-layer instead of the status
2364 * returned by the FW
39a98554 2365 * Note: this must be called with hba lock held
c4a3e0a5 2366 */
858119e1 2367static int
39a98554 2368megasas_deplete_reply_queue(struct megasas_instance *instance,
2369 u8 alt_status)
c4a3e0a5 2370{
39a98554 2371 u32 mfiStatus;
2372 u32 fw_state;
2373
2374 if ((mfiStatus = instance->instancet->check_reset(instance,
2375 instance->reg_set)) == 1) {
2376 return IRQ_HANDLED;
2377 }
2378
2379 if ((mfiStatus = instance->instancet->clear_intr(
2380 instance->reg_set)
2381 ) == 0) {
c4a3e0a5 2382 return IRQ_NONE;
39a98554 2383 }
2384
2385 instance->mfiStatus = mfiStatus;
2386
2387 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
2388 fw_state = instance->instancet->read_fw_status_reg(
2389 instance->reg_set) & MFI_STATE_MASK;
2390
2391 if (fw_state != MFI_STATE_FAULT) {
2392 printk(KERN_NOTICE "megaraid_sas: fw state:%x\n",
2393 fw_state);
2394 }
2395
2396 if ((fw_state == MFI_STATE_FAULT) &&
2397 (instance->disableOnlineCtrlReset == 0)) {
2398 printk(KERN_NOTICE "megaraid_sas: wait adp restart\n");
2399
2400 if ((instance->pdev->device ==
2401 PCI_DEVICE_ID_LSI_SAS1064R) ||
2402 (instance->pdev->device ==
2403 PCI_DEVICE_ID_DELL_PERC5) ||
2404 (instance->pdev->device ==
2405 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2406
2407 *instance->consumer =
2408 MEGASAS_ADPRESET_INPROG_SIGN;
2409 }
2410
2411
2412 instance->instancet->disable_intr(instance->reg_set);
2413 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
2414 instance->issuepend_done = 0;
2415
2416 atomic_set(&instance->fw_outstanding, 0);
2417 megasas_internal_reset_defer_cmds(instance);
2418
2419 printk(KERN_NOTICE "megasas: fwState=%x, stage:%d\n",
2420 fw_state, instance->adprecovery);
2421
2422 schedule_work(&instance->work_init);
2423 return IRQ_HANDLED;
2424
2425 } else {
2426 printk(KERN_NOTICE "megasas: fwstate:%x, dis_OCR=%x\n",
2427 fw_state, instance->disableOnlineCtrlReset);
2428 }
2429 }
c4a3e0a5 2430
5d018ad0 2431 tasklet_schedule(&instance->isr_tasklet);
c4a3e0a5
BS		 2432 return IRQ_HANDLED;
2433}
c4a3e0a5
BS		 2434/**
2435 * megasas_isr - isr entry point
2436 */
7d12e780 2437static irqreturn_t megasas_isr(int irq, void *devp)
c4a3e0a5 2438{
39a98554 2439 struct megasas_instance *instance;
2440 unsigned long flags;
2441 irqreturn_t rc;
2442
2443 if (atomic_read(
2444 &(((struct megasas_instance *)devp)->fw_reset_no_pci_access)))
2445 return IRQ_HANDLED;
2446
2447 instance = (struct megasas_instance *)devp;
2448
2449 spin_lock_irqsave(&instance->hba_lock, flags);
2450 rc = megasas_deplete_reply_queue(instance, DID_OK);
2451 spin_unlock_irqrestore(&instance->hba_lock, flags);
2452
2453 return rc;
c4a3e0a5
BS		 2454}
2455
2456/**
2457 * megasas_transition_to_ready - Move the FW to READY state
1341c939 2458 * @instance: Adapter soft state
c4a3e0a5
BS		 2459 *
2460 * During the initialization, FW passes can potentially be in any one of
2461 * several possible states. If the FW in operational, waiting-for-handshake
2462 * states, driver must take steps to bring it to ready state. Otherwise, it
2463 * has to wait for the ready state.
2464 */
2465static int
1341c939 2466megasas_transition_to_ready(struct megasas_instance* instance)
c4a3e0a5
BS		 2467{
2468 int i;
2469 u8 max_wait;
2470 u32 fw_state;
2471 u32 cur_state;
7218df69 2472 u32 abs_state, curr_abs_state;
c4a3e0a5 2473
1341c939 2474 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
c4a3e0a5 2475
e3bbff9f
SP		 2476 if (fw_state != MFI_STATE_READY)
2477 printk(KERN_INFO "megasas: Waiting for FW to come to ready"
2478 " state\n");
2479
c4a3e0a5
BS		 2480 while (fw_state != MFI_STATE_READY) {
2481
7218df69
YB		 2482 abs_state =
2483 instance->instancet->read_fw_status_reg(instance->reg_set);
2484
c4a3e0a5
BS		 2485 switch (fw_state) {
2486
2487 case MFI_STATE_FAULT:
2488
2489 printk(KERN_DEBUG "megasas: FW in FAULT state!!\n");
2490 return -ENODEV;
2491
2492 case MFI_STATE_WAIT_HANDSHAKE:
2493 /*
2494 * Set the CLR bit in inbound doorbell
2495 */
0c79e681 2496 if ((instance->pdev->device ==
87911122
YB		 2497 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2498 (instance->pdev->device ==
2499 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
2500
2501 writel(
2502 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
2503 &instance->reg_set->reserved_0[0]);
2504 } else {
2505 writel(
2506 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
2507 &instance->reg_set->inbound_doorbell);
2508 }
c4a3e0a5 2509
7218df69 2510 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 2511 cur_state = MFI_STATE_WAIT_HANDSHAKE;
2512 break;
2513
e3bbff9f 2514 case MFI_STATE_BOOT_MESSAGE_PENDING:
87911122
YB		 2515 if ((instance->pdev->device ==
2516 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2517 (instance->pdev->device ==
2518 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
2519 writel(MFI_INIT_HOTPLUG,
2520 &instance->reg_set->reserved_0[0]);
2521 } else
2522 writel(MFI_INIT_HOTPLUG,
2523 &instance->reg_set->inbound_doorbell);
e3bbff9f 2524
7218df69 2525 max_wait = MEGASAS_RESET_WAIT_TIME;
e3bbff9f
SP		 2526 cur_state = MFI_STATE_BOOT_MESSAGE_PENDING;
2527 break;
2528
c4a3e0a5
BS		 2529 case MFI_STATE_OPERATIONAL:
2530 /*
e3bbff9f 2531 * Bring it to READY state; assuming max wait 10 secs
c4a3e0a5 2532 */
b274cab7 2533 instance->instancet->disable_intr(instance->reg_set);
87911122
YB		 2534 if ((instance->pdev->device ==
2535 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2536 (instance->pdev->device ==
2537 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
2538 writel(MFI_RESET_FLAGS,
2539 &instance->reg_set->reserved_0[0]);
2540 } else
2541 writel(MFI_RESET_FLAGS,
2542 &instance->reg_set->inbound_doorbell);
c4a3e0a5 2543
7218df69 2544 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 2545 cur_state = MFI_STATE_OPERATIONAL;
2546 break;
2547
2548 case MFI_STATE_UNDEFINED:
2549 /*
2550 * This state should not last for more than 2 seconds
2551 */
7218df69 2552 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 2553 cur_state = MFI_STATE_UNDEFINED;
2554 break;
2555
2556 case MFI_STATE_BB_INIT:
7218df69 2557 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 2558 cur_state = MFI_STATE_BB_INIT;
2559 break;
2560
2561 case MFI_STATE_FW_INIT:
7218df69 2562 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 2563 cur_state = MFI_STATE_FW_INIT;
2564 break;
2565
2566 case MFI_STATE_FW_INIT_2:
7218df69 2567 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 2568 cur_state = MFI_STATE_FW_INIT_2;
2569 break;
2570
2571 case MFI_STATE_DEVICE_SCAN:
7218df69 2572 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 2573 cur_state = MFI_STATE_DEVICE_SCAN;
2574 break;
2575
2576 case MFI_STATE_FLUSH_CACHE:
7218df69 2577 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 2578 cur_state = MFI_STATE_FLUSH_CACHE;
2579 break;
2580
2581 default:
2582 printk(KERN_DEBUG "megasas: Unknown state 0x%x\n",
2583 fw_state);
2584 return -ENODEV;
2585 }
2586
2587 /*
2588 * The cur_state should not last for more than max_wait secs
2589 */
2590 for (i = 0; i < (max_wait * 1000); i++) {
1341c939
SP		 2591 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) &
2592 MFI_STATE_MASK ;
7218df69
YB		 2593 curr_abs_state =
2594 instance->instancet->read_fw_status_reg(instance->reg_set);
c4a3e0a5 2595
7218df69 2596 if (abs_state == curr_abs_state) {
c4a3e0a5
BS		 2597 msleep(1);
2598 } else
2599 break;
2600 }
2601
2602 /*
2603 * Return error if fw_state hasn't changed after max_wait
2604 */
7218df69 2605 if (curr_abs_state == abs_state) {
c4a3e0a5
BS		 2606 printk(KERN_DEBUG "FW state [%d] hasn't changed "
2607 "in %d secs\n", fw_state, max_wait);
2608 return -ENODEV;
2609 }
39a98554 2610 }
e3bbff9f 2611 printk(KERN_INFO "megasas: FW now in Ready state\n");
c4a3e0a5
BS		 2612
2613 return 0;
2614}
2615
2616/**
2617 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
2618 * @instance: Adapter soft state
2619 */
2620static void megasas_teardown_frame_pool(struct megasas_instance *instance)
2621{
2622 int i;
2623 u32 max_cmd = instance->max_fw_cmds;
2624 struct megasas_cmd *cmd;
2625
2626 if (!instance->frame_dma_pool)
2627 return;
2628
2629 /*
2630 * Return all frames to pool
2631 */
2632 for (i = 0; i < max_cmd; i++) {
2633
2634 cmd = instance->cmd_list[i];
2635
2636 if (cmd->frame)
2637 pci_pool_free(instance->frame_dma_pool, cmd->frame,
2638 cmd->frame_phys_addr);
2639
2640 if (cmd->sense)
e3bbff9f 2641 pci_pool_free(instance->sense_dma_pool, cmd->sense,
c4a3e0a5
BS		 2642 cmd->sense_phys_addr);
2643 }
2644
2645 /*
2646 * Now destroy the pool itself
2647 */
2648 pci_pool_destroy(instance->frame_dma_pool);
2649 pci_pool_destroy(instance->sense_dma_pool);
2650
2651 instance->frame_dma_pool = NULL;
2652 instance->sense_dma_pool = NULL;
2653}
2654
2655/**
2656 * megasas_create_frame_pool - Creates DMA pool for cmd frames
2657 * @instance: Adapter soft state
2658 *
2659 * Each command packet has an embedded DMA memory buffer that is used for
2660 * filling MFI frame and the SG list that immediately follows the frame. This
2661 * function creates those DMA memory buffers for each command packet by using
2662 * PCI pool facility.
2663 */
2664static int megasas_create_frame_pool(struct megasas_instance *instance)
2665{
2666 int i;
2667 u32 max_cmd;
2668 u32 sge_sz;
2669 u32 sgl_sz;
2670 u32 total_sz;
2671 u32 frame_count;
2672 struct megasas_cmd *cmd;
2673
2674 max_cmd = instance->max_fw_cmds;
2675
2676 /*
2677 * Size of our frame is 64 bytes for MFI frame, followed by max SG
2678 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer
2679 */
2680 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
2681 sizeof(struct megasas_sge32);
2682
f4c9a131
YB		 2683 if (instance->flag_ieee) {
2684 sge_sz = sizeof(struct megasas_sge_skinny);
2685 }
2686
c4a3e0a5
BS		 2687 /*
2688 * Calculated the number of 64byte frames required for SGL
2689 */
2690 sgl_sz = sge_sz * instance->max_num_sge;
2691 frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE - 1) / MEGAMFI_FRAME_SIZE;
39a98554 2692 frame_count = 15;
c4a3e0a5
BS		 2693
2694 /*
2695 * We need one extra frame for the MFI command
2696 */
2697 frame_count++;
2698
2699 total_sz = MEGAMFI_FRAME_SIZE * frame_count;
2700 /*
2701 * Use DMA pool facility provided by PCI layer
2702 */
2703 instance->frame_dma_pool = pci_pool_create("megasas frame pool",
2704 instance->pdev, total_sz, 64,
2705 0);
2706
2707 if (!instance->frame_dma_pool) {
2708 printk(KERN_DEBUG "megasas: failed to setup frame pool\n");
2709 return -ENOMEM;
2710 }
2711
2712 instance->sense_dma_pool = pci_pool_create("megasas sense pool",
2713 instance->pdev, 128, 4, 0);
2714
2715 if (!instance->sense_dma_pool) {
2716 printk(KERN_DEBUG "megasas: failed to setup sense pool\n");
2717
2718 pci_pool_destroy(instance->frame_dma_pool);
2719 instance->frame_dma_pool = NULL;
2720
2721 return -ENOMEM;
2722 }
2723
2724 /*
2725 * Allocate and attach a frame to each of the commands in cmd_list.
2726 * By making cmd->index as the context instead of the &cmd, we can
2727 * always use 32bit context regardless of the architecture
2728 */
2729 for (i = 0; i < max_cmd; i++) {
2730
2731 cmd = instance->cmd_list[i];
2732
2733 cmd->frame = pci_pool_alloc(instance->frame_dma_pool,
2734 GFP_KERNEL, &cmd->frame_phys_addr);
2735
2736 cmd->sense = pci_pool_alloc(instance->sense_dma_pool,
2737 GFP_KERNEL, &cmd->sense_phys_addr);
2738
2739 /*
2740 * megasas_teardown_frame_pool() takes care of freeing
2741 * whatever has been allocated
2742 */
2743 if (!cmd->frame || !cmd->sense) {
2744 printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n");
2745 megasas_teardown_frame_pool(instance);
2746 return -ENOMEM;
2747 }
2748
707e09bd 2749 memset(cmd->frame, 0, total_sz);
c4a3e0a5 2750 cmd->frame->io.context = cmd->index;
7e8a75f4 2751 cmd->frame->io.pad_0 = 0;
c4a3e0a5
BS		 2752 }
2753
2754 return 0;
2755}
2756
2757/**
2758 * megasas_free_cmds - Free all the cmds in the free cmd pool
2759 * @instance: Adapter soft state
2760 */
2761static void megasas_free_cmds(struct megasas_instance *instance)
2762{
2763 int i;
2764 /* First free the MFI frame pool */
2765 megasas_teardown_frame_pool(instance);
2766
2767 /* Free all the commands in the cmd_list */
2768 for (i = 0; i < instance->max_fw_cmds; i++)
2769 kfree(instance->cmd_list[i]);
2770
2771 /* Free the cmd_list buffer itself */
2772 kfree(instance->cmd_list);
2773 instance->cmd_list = NULL;
2774
2775 INIT_LIST_HEAD(&instance->cmd_pool);
2776}
2777
2778/**
2779 * megasas_alloc_cmds - Allocates the command packets
2780 * @instance: Adapter soft state
2781 *
2782 * Each command that is issued to the FW, whether IO commands from the OS or
2783 * internal commands like IOCTLs, are wrapped in local data structure called
2784 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
2785 * the FW.
2786 *
2787 * Each frame has a 32-bit field called context (tag). This context is used
2788 * to get back the megasas_cmd from the frame when a frame gets completed in
2789 * the ISR. Typically the address of the megasas_cmd itself would be used as
2790 * the context. But we wanted to keep the differences between 32 and 64 bit
2791 * systems to the mininum. We always use 32 bit integers for the context. In
2792 * this driver, the 32 bit values are the indices into an array cmd_list.
2793 * This array is used only to look up the megasas_cmd given the context. The
2794 * free commands themselves are maintained in a linked list called cmd_pool.
2795 */
2796static int megasas_alloc_cmds(struct megasas_instance *instance)
2797{
2798 int i;
2799 int j;
2800 u32 max_cmd;
2801 struct megasas_cmd *cmd;
2802
2803 max_cmd = instance->max_fw_cmds;
2804
2805 /*
2806 * instance->cmd_list is an array of struct megasas_cmd pointers.
2807 * Allocate the dynamic array first and then allocate individual
2808 * commands.
2809 */
dd00cc48 2810 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
c4a3e0a5
BS		 2811
2812 if (!instance->cmd_list) {
2813 printk(KERN_DEBUG "megasas: out of memory\n");
2814 return -ENOMEM;
2815 }
2816
c4a3e0a5
BS		 2817
2818 for (i = 0; i < max_cmd; i++) {
2819 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
2820 GFP_KERNEL);
2821
2822 if (!instance->cmd_list[i]) {
2823
2824 for (j = 0; j < i; j++)
2825 kfree(instance->cmd_list[j]);
2826
2827 kfree(instance->cmd_list);
2828 instance->cmd_list = NULL;
2829
2830 return -ENOMEM;
2831 }
2832 }
2833
2834 /*
2835 * Add all the commands to command pool (instance->cmd_pool)
2836 */
2837 for (i = 0; i < max_cmd; i++) {
2838 cmd = instance->cmd_list[i];
2839 memset(cmd, 0, sizeof(struct megasas_cmd));
2840 cmd->index = i;
39a98554 2841 cmd->scmd = NULL;
c4a3e0a5
BS		 2842 cmd->instance = instance;
2843
2844 list_add_tail(&cmd->list, &instance->cmd_pool);
2845 }
2846
2847 /*
2848 * Create a frame pool and assign one frame to each cmd
2849 */
2850 if (megasas_create_frame_pool(instance)) {
2851 printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n");
2852 megasas_free_cmds(instance);
2853 }
2854
2855 return 0;
2856}
2857
81e403ce
YB		 2858/*
2859 * megasas_get_pd_list_info - Returns FW's pd_list structure
2860 * @instance: Adapter soft state
2861 * @pd_list: pd_list structure
2862 *
2863 * Issues an internal command (DCMD) to get the FW's controller PD
2864 * list structure. This information is mainly used to find out SYSTEM
2865 * supported by the FW.
2866 */
2867static int
2868megasas_get_pd_list(struct megasas_instance *instance)
2869{
2870 int ret = 0, pd_index = 0;
2871 struct megasas_cmd *cmd;
2872 struct megasas_dcmd_frame *dcmd;
2873 struct MR_PD_LIST *ci;
2874 struct MR_PD_ADDRESS *pd_addr;
2875 dma_addr_t ci_h = 0;
2876
2877 cmd = megasas_get_cmd(instance);
2878
2879 if (!cmd) {
2880 printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n");
2881 return -ENOMEM;
2882 }
2883
2884 dcmd = &cmd->frame->dcmd;
2885
2886 ci = pci_alloc_consistent(instance->pdev,
2887 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h);
2888
2889 if (!ci) {
2890 printk(KERN_DEBUG "Failed to alloc mem for pd_list\n");
2891 megasas_return_cmd(instance, cmd);
2892 return -ENOMEM;
2893 }
2894
2895 memset(ci, 0, sizeof(*ci));
2896 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2897
2898 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
2899 dcmd->mbox.b[1] = 0;
2900 dcmd->cmd = MFI_CMD_DCMD;
2901 dcmd->cmd_status = 0xFF;
2902 dcmd->sge_count = 1;
2903 dcmd->flags = MFI_FRAME_DIR_READ;
2904 dcmd->timeout = 0;
780a3762 2905 dcmd->pad_0 = 0;
81e403ce
YB		 2906 dcmd->data_xfer_len = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST);
2907 dcmd->opcode = MR_DCMD_PD_LIST_QUERY;
2908 dcmd->sgl.sge32[0].phys_addr = ci_h;
2909 dcmd->sgl.sge32[0].length = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST);
2910
2911 if (!megasas_issue_polled(instance, cmd)) {
2912 ret = 0;
2913 } else {
2914 ret = -1;
2915 }
2916
2917 /*
2918 * the following function will get the instance PD LIST.
2919 */
2920
2921 pd_addr = ci->addr;
2922
2923 if ( ret == 0 &&
2924 (ci->count <
2925 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) {
2926
2927 memset(instance->pd_list, 0,
2928 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
2929
2930 for (pd_index = 0; pd_index < ci->count; pd_index++) {
2931
2932 instance->pd_list[pd_addr->deviceId].tid =
2933 pd_addr->deviceId;
2934 instance->pd_list[pd_addr->deviceId].driveType =
2935 pd_addr->scsiDevType;
2936 instance->pd_list[pd_addr->deviceId].driveState =
2937 MR_PD_STATE_SYSTEM;
2938 pd_addr++;
2939 }
2940 }
2941
2942 pci_free_consistent(instance->pdev,
2943 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
2944 ci, ci_h);
2945 megasas_return_cmd(instance, cmd);
2946
2947 return ret;
2948}
2949
bdc6fb8d
YB		 2950/*
2951 * megasas_get_ld_list_info - Returns FW's ld_list structure
2952 * @instance: Adapter soft state
2953 * @ld_list: ld_list structure
2954 *
2955 * Issues an internal command (DCMD) to get the FW's controller PD
2956 * list structure. This information is mainly used to find out SYSTEM
2957 * supported by the FW.
2958 */
2959static int
2960megasas_get_ld_list(struct megasas_instance *instance)
2961{
2962 int ret = 0, ld_index = 0, ids = 0;
2963 struct megasas_cmd *cmd;
2964 struct megasas_dcmd_frame *dcmd;
2965 struct MR_LD_LIST *ci;
2966 dma_addr_t ci_h = 0;
2967
2968 cmd = megasas_get_cmd(instance);
2969
2970 if (!cmd) {
2971 printk(KERN_DEBUG "megasas_get_ld_list: Failed to get cmd\n");
2972 return -ENOMEM;
2973 }
2974
2975 dcmd = &cmd->frame->dcmd;
2976
2977 ci = pci_alloc_consistent(instance->pdev,
2978 sizeof(struct MR_LD_LIST),
2979 &ci_h);
2980
2981 if (!ci) {
2982 printk(KERN_DEBUG "Failed to alloc mem in get_ld_list\n");
2983 megasas_return_cmd(instance, cmd);
2984 return -ENOMEM;
2985 }
2986
2987 memset(ci, 0, sizeof(*ci));
2988 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2989
2990 dcmd->cmd = MFI_CMD_DCMD;
2991 dcmd->cmd_status = 0xFF;
2992 dcmd->sge_count = 1;
2993 dcmd->flags = MFI_FRAME_DIR_READ;
2994 dcmd->timeout = 0;
2995 dcmd->data_xfer_len = sizeof(struct MR_LD_LIST);
2996 dcmd->opcode = MR_DCMD_LD_GET_LIST;
2997 dcmd->sgl.sge32[0].phys_addr = ci_h;
2998 dcmd->sgl.sge32[0].length = sizeof(struct MR_LD_LIST);
2999 dcmd->pad_0 = 0;
3000
3001 if (!megasas_issue_polled(instance, cmd)) {
3002 ret = 0;
3003 } else {
3004 ret = -1;
3005 }
3006
3007 /* the following function will get the instance PD LIST */
3008
39a98554 3009 if ((ret == 0) && (ci->ldCount <= MAX_LOGICAL_DRIVES)) {
bdc6fb8d
YB		 3010 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
3011
3012 for (ld_index = 0; ld_index < ci->ldCount; ld_index++) {
3013 if (ci->ldList[ld_index].state != 0) {
3014 ids = ci->ldList[ld_index].ref.targetId;
3015 instance->ld_ids[ids] =
3016 ci->ldList[ld_index].ref.targetId;
3017 }
3018 }
3019 }
3020
3021 pci_free_consistent(instance->pdev,
3022 sizeof(struct MR_LD_LIST),
3023 ci,
3024 ci_h);
3025
3026 megasas_return_cmd(instance, cmd);
3027 return ret;
3028}
3029
c4a3e0a5
BS		 3030/**
3031 * megasas_get_controller_info - Returns FW's controller structure
3032 * @instance: Adapter soft state
3033 * @ctrl_info: Controller information structure
3034 *
3035 * Issues an internal command (DCMD) to get the FW's controller structure.
3036 * This information is mainly used to find out the maximum IO transfer per
3037 * command supported by the FW.
3038 */
3039static int
3040megasas_get_ctrl_info(struct megasas_instance *instance,
3041 struct megasas_ctrl_info *ctrl_info)
3042{
3043 int ret = 0;
3044 struct megasas_cmd *cmd;
3045 struct megasas_dcmd_frame *dcmd;
3046 struct megasas_ctrl_info *ci;
3047 dma_addr_t ci_h = 0;
3048
3049 cmd = megasas_get_cmd(instance);
3050
3051 if (!cmd) {
3052 printk(KERN_DEBUG "megasas: Failed to get a free cmd\n");
3053 return -ENOMEM;
3054 }
3055
3056 dcmd = &cmd->frame->dcmd;
3057
3058 ci = pci_alloc_consistent(instance->pdev,
3059 sizeof(struct megasas_ctrl_info), &ci_h);
3060
3061 if (!ci) {
3062 printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n");
3063 megasas_return_cmd(instance, cmd);
3064 return -ENOMEM;
3065 }
3066
3067 memset(ci, 0, sizeof(*ci));
3068 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3069
3070 dcmd->cmd = MFI_CMD_DCMD;
3071 dcmd->cmd_status = 0xFF;
3072 dcmd->sge_count = 1;
3073 dcmd->flags = MFI_FRAME_DIR_READ;
3074 dcmd->timeout = 0;
780a3762 3075 dcmd->pad_0 = 0;
c4a3e0a5
BS		 3076 dcmd->data_xfer_len = sizeof(struct megasas_ctrl_info);
3077 dcmd->opcode = MR_DCMD_CTRL_GET_INFO;
3078 dcmd->sgl.sge32[0].phys_addr = ci_h;
3079 dcmd->sgl.sge32[0].length = sizeof(struct megasas_ctrl_info);
3080
3081 if (!megasas_issue_polled(instance, cmd)) {
3082 ret = 0;
3083 memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info));
3084 } else {
3085 ret = -1;
3086 }
3087
3088 pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info),
3089 ci, ci_h);
3090
3091 megasas_return_cmd(instance, cmd);
3092 return ret;
3093}
3094
31ea7088 3095/**
3096 * megasas_issue_init_mfi - Initializes the FW
3097 * @instance: Adapter soft state
3098 *
3099 * Issues the INIT MFI cmd
3100 */
3101static int
3102megasas_issue_init_mfi(struct megasas_instance *instance)
3103{
3104 u32 context;
3105
3106 struct megasas_cmd *cmd;
3107
3108 struct megasas_init_frame *init_frame;
3109 struct megasas_init_queue_info *initq_info;
3110 dma_addr_t init_frame_h;
3111 dma_addr_t initq_info_h;
3112
3113 /*
3114 * Prepare a init frame. Note the init frame points to queue info
3115 * structure. Each frame has SGL allocated after first 64 bytes. For
3116 * this frame - since we don't need any SGL - we use SGL's space as
3117 * queue info structure
3118 *
3119 * We will not get a NULL command below. We just created the pool.
3120 */
3121 cmd = megasas_get_cmd(instance);
3122
3123 init_frame = (struct megasas_init_frame *)cmd->frame;
3124 initq_info = (struct megasas_init_queue_info *)
3125 ((unsigned long)init_frame + 64);
3126
3127 init_frame_h = cmd->frame_phys_addr;
3128 initq_info_h = init_frame_h + 64;
3129
3130 context = init_frame->context;
3131 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
3132 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
3133 init_frame->context = context;
3134
3135 initq_info->reply_queue_entries = instance->max_fw_cmds + 1;
3136 initq_info->reply_queue_start_phys_addr_lo = instance->reply_queue_h;
3137
3138 initq_info->producer_index_phys_addr_lo = instance->producer_h;
3139 initq_info->consumer_index_phys_addr_lo = instance->consumer_h;
3140
3141 init_frame->cmd = MFI_CMD_INIT;
3142 init_frame->cmd_status = 0xFF;
3143 init_frame->queue_info_new_phys_addr_lo = initq_info_h;
3144
3145 init_frame->data_xfer_len = sizeof(struct megasas_init_queue_info);
3146
3147 /*
3148 * disable the intr before firing the init frame to FW
3149 */
3150 instance->instancet->disable_intr(instance->reg_set);
3151
3152 /*
3153 * Issue the init frame in polled mode
3154 */
3155
3156 if (megasas_issue_polled(instance, cmd)) {
3157 printk(KERN_ERR "megasas: Failed to init firmware\n");
3158 megasas_return_cmd(instance, cmd);
3159 goto fail_fw_init;
3160 }
3161
3162 megasas_return_cmd(instance, cmd);
3163
3164 return 0;
3165
3166fail_fw_init:
3167 return -EINVAL;
3168}
3169
ad84db2e 3170/**
3171 * megasas_start_timer - Initializes a timer object
3172 * @instance: Adapter soft state
3173 * @timer: timer object to be initialized
3174 * @fn: timer function
3175 * @interval: time interval between timer function call
3176 */
3177static inline void
3178megasas_start_timer(struct megasas_instance *instance,
3179 struct timer_list *timer,
3180 void *fn, unsigned long interval)
3181{
3182 init_timer(timer);
3183 timer->expires = jiffies + interval;
3184 timer->data = (unsigned long)instance;
3185 timer->function = fn;
3186 add_timer(timer);
3187}
3188
3189/**
3190 * megasas_io_completion_timer - Timer fn
3191 * @instance_addr: Address of adapter soft state
3192 *
3193 * Schedules tasklet for cmd completion
3194 * if poll_mode_io is set
3195 */
3196static void
3197megasas_io_completion_timer(unsigned long instance_addr)
3198{
3199 struct megasas_instance *instance =
3200 (struct megasas_instance *)instance_addr;
3201
3202 if (atomic_read(&instance->fw_outstanding))
3203 tasklet_schedule(&instance->isr_tasklet);
3204
3205 /* Restart timer */
3206 if (poll_mode_io)
3207 mod_timer(&instance->io_completion_timer,
3208 jiffies + MEGASAS_COMPLETION_TIMER_INTERVAL);
3209}
3210
c4a3e0a5
BS		 3211/**
3212 * megasas_init_mfi - Initializes the FW
3213 * @instance: Adapter soft state
3214 *
3215 * This is the main function for initializing MFI firmware.
3216 */
3217static int megasas_init_mfi(struct megasas_instance *instance)
3218{
3219 u32 context_sz;
3220 u32 reply_q_sz;
3221 u32 max_sectors_1;
3222 u32 max_sectors_2;
14faea9f 3223 u32 tmp_sectors;
c4a3e0a5 3224 struct megasas_register_set __iomem *reg_set;
c4a3e0a5 3225 struct megasas_ctrl_info *ctrl_info;
c4a3e0a5
BS		 3226 /*
3227 * Map the message registers
3228 */
6610a6b3 3229 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
87911122
YB		 3230 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3231 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
6610a6b3
YB		 3232 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0079GEN2)) {
3233 instance->base_addr = pci_resource_start(instance->pdev, 1);
3234 } else {
3235 instance->base_addr = pci_resource_start(instance->pdev, 0);
3236 }
c4a3e0a5 3237
aeab3fd7
NF		 3238 if (pci_request_selected_regions(instance->pdev,
3239 pci_select_bars(instance->pdev, IORESOURCE_MEM),
3240 "megasas: LSI")) {
c4a3e0a5
BS		 3241 printk(KERN_DEBUG "megasas: IO memory region busy!\n");
3242 return -EBUSY;
3243 }
3244
3245 instance->reg_set = ioremap_nocache(instance->base_addr, 8192);
3246
3247 if (!instance->reg_set) {
3248 printk(KERN_DEBUG "megasas: Failed to map IO mem\n");
3249 goto fail_ioremap;
3250 }
3251
3252 reg_set = instance->reg_set;
3253
f9876f0b
SP		 3254 switch(instance->pdev->device)
3255 {
af7a5647 3256 case PCI_DEVICE_ID_LSI_SAS1078R:
3257 case PCI_DEVICE_ID_LSI_SAS1078DE:
f9876f0b
SP		 3258 instance->instancet = &megasas_instance_template_ppc;
3259 break;
6610a6b3
YB		 3260 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
3261 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
3262 instance->instancet = &megasas_instance_template_gen2;
3263 break;
87911122
YB		 3264 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
3265 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
3266 instance->instancet = &megasas_instance_template_skinny;
3267 break;
f9876f0b
SP		 3268 case PCI_DEVICE_ID_LSI_SAS1064R:
3269 case PCI_DEVICE_ID_DELL_PERC5:
3270 default:
3271 instance->instancet = &megasas_instance_template_xscale;
3272 break;
3273 }
1341c939 3274
c4a3e0a5
BS		 3275 /*
3276 * We expect the FW state to be READY
3277 */
1341c939 3278 if (megasas_transition_to_ready(instance))
c4a3e0a5
BS		 3279 goto fail_ready_state;
3280
3281 /*
3282 * Get various operational parameters from status register
3283 */
1341c939 3284 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
e3bbff9f
SP		 3285 /*
3286 * Reduce the max supported cmds by 1. This is to ensure that the
3287 * reply_q_sz (1 more than the max cmd that driver may send)
3288 * does not exceed max cmds that the FW can support
3289 */
3290 instance->max_fw_cmds = instance->max_fw_cmds-1;
1341c939
SP		 3291 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >>
3292 0x10;
c4a3e0a5
BS		 3293 /*
3294 * Create a pool of commands
3295 */
3296 if (megasas_alloc_cmds(instance))
3297 goto fail_alloc_cmds;
3298
3299 /*
3300 * Allocate memory for reply queue. Length of reply queue should
3301 * be _one_ more than the maximum commands handled by the firmware.
3302 *
3303 * Note: When FW completes commands, it places corresponding contex
3304 * values in this circular reply queue. This circular queue is a fairly
3305 * typical producer-consumer queue. FW is the producer (of completed
3306 * commands) and the driver is the consumer.
3307 */
3308 context_sz = sizeof(u32);
3309 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
3310
3311 instance->reply_queue = pci_alloc_consistent(instance->pdev,
3312 reply_q_sz,
3313 &instance->reply_queue_h);
3314
3315 if (!instance->reply_queue) {
3316 printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n");
3317 goto fail_reply_queue;
3318 }
3319
31ea7088 3320 if (megasas_issue_init_mfi(instance))
c4a3e0a5 3321 goto fail_fw_init;
c4a3e0a5 3322
39a98554 3323 instance->fw_support_ieee = 0;
3324 instance->fw_support_ieee =
3325 (instance->instancet->read_fw_status_reg(reg_set) &
3326 0x04000000);
3327
3328 printk(KERN_NOTICE "megasas_init_mfi: fw_support_ieee=%d",
3329 instance->fw_support_ieee);
3330
3331 if (instance->fw_support_ieee)
3332 instance->flag_ieee = 1;
3333
3334 /** for passthrough
3335 * the following function will get the PD LIST.
3336 */
3337
81e403ce
YB		 3338 memset(instance->pd_list, 0 ,
3339 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
3340 megasas_get_pd_list(instance);
3341
bdc6fb8d
YB		 3342 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
3343 megasas_get_ld_list(instance);
3344
c4a3e0a5
BS		 3345 ctrl_info = kmalloc(sizeof(struct megasas_ctrl_info), GFP_KERNEL);
3346
3347 /*
3348 * Compute the max allowed sectors per IO: The controller info has two
3349 * limits on max sectors. Driver should use the minimum of these two.
3350 *
3351 * 1 << stripe_sz_ops.min = max sectors per strip
3352 *
3353 * Note that older firmwares ( < FW ver 30) didn't report information
3354 * to calculate max_sectors_1. So the number ended up as zero always.
3355 */
14faea9f 3356 tmp_sectors = 0;
c4a3e0a5
BS		 3357 if (ctrl_info && !megasas_get_ctrl_info(instance, ctrl_info)) {
3358
3359 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
3360 ctrl_info->max_strips_per_io;
3361 max_sectors_2 = ctrl_info->max_request_size;
3362
14faea9f 3363 tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2);
39a98554 3364 instance->disableOnlineCtrlReset =
3365 ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset;
14faea9f 3366 }
3367
3368 instance->max_sectors_per_req = instance->max_num_sge *
3369 PAGE_SIZE / 512;
3370 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
3371 instance->max_sectors_per_req = tmp_sectors;
c4a3e0a5
BS		 3372
3373 kfree(ctrl_info);
3374
5d018ad0
SP		 3375 /*
3376 * Setup tasklet for cmd completion
3377 */
3378
ad84db2e 3379 tasklet_init(&instance->isr_tasklet, megasas_complete_cmd_dpc,
3380 (unsigned long)instance);
3381
3382 /* Initialize the cmd completion timer */
3383 if (poll_mode_io)
3384 megasas_start_timer(instance, &instance->io_completion_timer,
3385 megasas_io_completion_timer,
3386 MEGASAS_COMPLETION_TIMER_INTERVAL);
c4a3e0a5
BS		 3387 return 0;
3388
3389 fail_fw_init:
c4a3e0a5
BS		 3390
3391 pci_free_consistent(instance->pdev, reply_q_sz,
3392 instance->reply_queue, instance->reply_queue_h);
3393 fail_reply_queue:
3394 megasas_free_cmds(instance);
3395
3396 fail_alloc_cmds:
3397 fail_ready_state:
3398 iounmap(instance->reg_set);
3399
3400 fail_ioremap:
aeab3fd7
NF		 3401 pci_release_selected_regions(instance->pdev,
3402 pci_select_bars(instance->pdev, IORESOURCE_MEM));
c4a3e0a5
BS		 3403
3404 return -EINVAL;
3405}
3406
3407/**
3408 * megasas_release_mfi - Reverses the FW initialization
3409 * @intance: Adapter soft state
3410 */
3411static void megasas_release_mfi(struct megasas_instance *instance)
3412{
3413 u32 reply_q_sz = sizeof(u32) * (instance->max_fw_cmds + 1);
3414
3415 pci_free_consistent(instance->pdev, reply_q_sz,
3416 instance->reply_queue, instance->reply_queue_h);
3417
3418 megasas_free_cmds(instance);
3419
3420 iounmap(instance->reg_set);
3421
aeab3fd7
NF		 3422 pci_release_selected_regions(instance->pdev,
3423 pci_select_bars(instance->pdev, IORESOURCE_MEM));
c4a3e0a5
BS		 3424}
3425
3426/**
3427 * megasas_get_seq_num - Gets latest event sequence numbers
3428 * @instance: Adapter soft state
3429 * @eli: FW event log sequence numbers information
3430 *
3431 * FW maintains a log of all events in a non-volatile area. Upper layers would
3432 * usually find out the latest sequence number of the events, the seq number at
3433 * the boot etc. They would "read" all the events below the latest seq number
3434 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
3435 * number), they would subsribe to AEN (asynchronous event notification) and
3436 * wait for the events to happen.
3437 */
3438static int
3439megasas_get_seq_num(struct megasas_instance *instance,
3440 struct megasas_evt_log_info *eli)
3441{
3442 struct megasas_cmd *cmd;
3443 struct megasas_dcmd_frame *dcmd;
3444 struct megasas_evt_log_info *el_info;
3445 dma_addr_t el_info_h = 0;
3446
3447 cmd = megasas_get_cmd(instance);
3448
3449 if (!cmd) {
3450 return -ENOMEM;
3451 }
3452
3453 dcmd = &cmd->frame->dcmd;
3454 el_info = pci_alloc_consistent(instance->pdev,
3455 sizeof(struct megasas_evt_log_info),
3456 &el_info_h);
3457
3458 if (!el_info) {
3459 megasas_return_cmd(instance, cmd);
3460 return -ENOMEM;
3461 }
3462
3463 memset(el_info, 0, sizeof(*el_info));
3464 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3465
3466 dcmd->cmd = MFI_CMD_DCMD;
3467 dcmd->cmd_status = 0x0;
3468 dcmd->sge_count = 1;
3469 dcmd->flags = MFI_FRAME_DIR_READ;
3470 dcmd->timeout = 0;
780a3762 3471 dcmd->pad_0 = 0;
c4a3e0a5
BS		 3472 dcmd->data_xfer_len = sizeof(struct megasas_evt_log_info);
3473 dcmd->opcode = MR_DCMD_CTRL_EVENT_GET_INFO;
3474 dcmd->sgl.sge32[0].phys_addr = el_info_h;
3475 dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_log_info);
3476
3477 megasas_issue_blocked_cmd(instance, cmd);
3478
3479 /*
3480 * Copy the data back into callers buffer
3481 */
3482 memcpy(eli, el_info, sizeof(struct megasas_evt_log_info));
3483
3484 pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info),
3485 el_info, el_info_h);
3486
3487 megasas_return_cmd(instance, cmd);
3488
3489 return 0;
3490}
3491
3492/**
3493 * megasas_register_aen - Registers for asynchronous event notification
3494 * @instance: Adapter soft state
3495 * @seq_num: The starting sequence number
3496 * @class_locale: Class of the event
3497 *
3498 * This function subscribes for AEN for events beyond the @seq_num. It requests
3499 * to be notified if and only if the event is of type @class_locale
3500 */
3501static int
3502megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
3503 u32 class_locale_word)
3504{
3505 int ret_val;
3506 struct megasas_cmd *cmd;
3507 struct megasas_dcmd_frame *dcmd;
3508 union megasas_evt_class_locale curr_aen;
3509 union megasas_evt_class_locale prev_aen;
3510
3511 /*
3512 * If there an AEN pending already (aen_cmd), check if the
3513 * class_locale of that pending AEN is inclusive of the new
3514 * AEN request we currently have. If it is, then we don't have
3515 * to do anything. In other words, whichever events the current
3516 * AEN request is subscribing to, have already been subscribed
3517 * to.
3518 *
3519 * If the old_cmd is _not_ inclusive, then we have to abort
3520 * that command, form a class_locale that is superset of both
3521 * old and current and re-issue to the FW
3522 */
3523
3524 curr_aen.word = class_locale_word;
3525
3526 if (instance->aen_cmd) {
3527
3528 prev_aen.word = instance->aen_cmd->frame->dcmd.mbox.w[1];
3529
3530 /*
3531 * A class whose enum value is smaller is inclusive of all
3532 * higher values. If a PROGRESS (= -1) was previously
3533 * registered, then a new registration requests for higher
3534 * classes need not be sent to FW. They are automatically
3535 * included.
3536 *
3537 * Locale numbers don't have such hierarchy. They are bitmap
3538 * values
3539 */
3540 if ((prev_aen.members.class <= curr_aen.members.class) &&
3541 !((prev_aen.members.locale & curr_aen.members.locale) ^
3542 curr_aen.members.locale)) {
3543 /*
3544 * Previously issued event registration includes
3545 * current request. Nothing to do.
3546 */
3547 return 0;
3548 } else {
3549 curr_aen.members.locale |= prev_aen.members.locale;
3550
3551 if (prev_aen.members.class < curr_aen.members.class)
3552 curr_aen.members.class = prev_aen.members.class;
3553
3554 instance->aen_cmd->abort_aen = 1;
3555 ret_val = megasas_issue_blocked_abort_cmd(instance,
3556 instance->
3557 aen_cmd);
3558
3559 if (ret_val) {
3560 printk(KERN_DEBUG "megasas: Failed to abort "
3561 "previous AEN command\n");
3562 return ret_val;
3563 }
3564 }
3565 }
3566
3567 cmd = megasas_get_cmd(instance);
3568
3569 if (!cmd)
3570 return -ENOMEM;
3571
3572 dcmd = &cmd->frame->dcmd;
3573
3574 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
3575
3576 /*
3577 * Prepare DCMD for aen registration
3578 */
3579 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3580
3581 dcmd->cmd = MFI_CMD_DCMD;
3582 dcmd->cmd_status = 0x0;
3583 dcmd->sge_count = 1;
3584 dcmd->flags = MFI_FRAME_DIR_READ;
3585 dcmd->timeout = 0;
780a3762 3586 dcmd->pad_0 = 0;
39a98554 3587 instance->last_seq_num = seq_num;
c4a3e0a5
BS		 3588 dcmd->data_xfer_len = sizeof(struct megasas_evt_detail);
3589 dcmd->opcode = MR_DCMD_CTRL_EVENT_WAIT;
3590 dcmd->mbox.w[0] = seq_num;
3591 dcmd->mbox.w[1] = curr_aen.word;
3592 dcmd->sgl.sge32[0].phys_addr = (u32) instance->evt_detail_h;
3593 dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_detail);
3594
f4c9a131
YB		 3595 if (instance->aen_cmd != NULL) {
3596 megasas_return_cmd(instance, cmd);
3597 return 0;
3598 }
3599
c4a3e0a5
BS		 3600 /*
3601 * Store reference to the cmd used to register for AEN. When an
3602 * application wants us to register for AEN, we have to abort this
3603 * cmd and re-register with a new EVENT LOCALE supplied by that app
3604 */
3605 instance->aen_cmd = cmd;
3606
3607 /*
3608 * Issue the aen registration frame
3609 */
0c79e681
YB		 3610 instance->instancet->fire_cmd(instance,
3611 cmd->frame_phys_addr, 0, instance->reg_set);
c4a3e0a5
BS		 3612
3613 return 0;
3614}
3615
3616/**
3617 * megasas_start_aen - Subscribes to AEN during driver load time
3618 * @instance: Adapter soft state
3619 */
3620static int megasas_start_aen(struct megasas_instance *instance)
3621{
3622 struct megasas_evt_log_info eli;
3623 union megasas_evt_class_locale class_locale;
3624
3625 /*
3626 * Get the latest sequence number from FW
3627 */
3628 memset(&eli, 0, sizeof(eli));
3629
3630 if (megasas_get_seq_num(instance, &eli))
3631 return -1;
3632
3633 /*
3634 * Register AEN with FW for latest sequence number plus 1
3635 */
3636 class_locale.members.reserved = 0;
3637 class_locale.members.locale = MR_EVT_LOCALE_ALL;
3638 class_locale.members.class = MR_EVT_CLASS_DEBUG;
3639
3640 return megasas_register_aen(instance, eli.newest_seq_num + 1,
3641 class_locale.word);
3642}
3643
3644/**
3645 * megasas_io_attach - Attaches this driver to SCSI mid-layer
3646 * @instance: Adapter soft state
3647 */
3648static int megasas_io_attach(struct megasas_instance *instance)
3649{
3650 struct Scsi_Host *host = instance->host;
3651
3652 /*
3653 * Export parameters required by SCSI mid-layer
3654 */
3655 host->irq = instance->pdev->irq;
3656 host->unique_id = instance->unique_id;
7bebf5c7
YB		 3657 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3658 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
3659 host->can_queue =
3660 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
3661 } else
3662 host->can_queue =
3663 instance->max_fw_cmds - MEGASAS_INT_CMDS;
c4a3e0a5
BS		 3664 host->this_id = instance->init_id;
3665 host->sg_tablesize = instance->max_num_sge;
1fd10685
YB		 3666 /*
3667 * Check if the module parameter value for max_sectors can be used
3668 */
3669 if (max_sectors && max_sectors < instance->max_sectors_per_req)
3670 instance->max_sectors_per_req = max_sectors;
3671 else {
3672 if (max_sectors) {
3673 if (((instance->pdev->device ==
3674 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
3675 (instance->pdev->device ==
3676 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
3677 (max_sectors <= MEGASAS_MAX_SECTORS)) {
3678 instance->max_sectors_per_req = max_sectors;
3679 } else {
3680 printk(KERN_INFO "megasas: max_sectors should be > 0"
3681 "and <= %d (or < 1MB for GEN2 controller)\n",
3682 instance->max_sectors_per_req);
3683 }
3684 }
3685 }
3686
c4a3e0a5
BS		 3687 host->max_sectors = instance->max_sectors_per_req;
3688 host->cmd_per_lun = 128;
3689 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
3690 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
3691 host->max_lun = MEGASAS_MAX_LUN;
122da302 3692 host->max_cmd_len = 16;
c4a3e0a5
BS		 3693
3694 /*
3695 * Notify the mid-layer about the new controller
3696 */
3697 if (scsi_add_host(host, &instance->pdev->dev)) {
3698 printk(KERN_DEBUG "megasas: scsi_add_host failed\n");
3699 return -ENODEV;
3700 }
3701
3702 /*
3703 * Trigger SCSI to scan our drives
3704 */
3705 scsi_scan_host(host);
3706 return 0;
3707}
3708
31ea7088 3709static int
3710megasas_set_dma_mask(struct pci_dev *pdev)
3711{
3712 /*
3713 * All our contollers are capable of performing 64-bit DMA
3714 */
3715 if (IS_DMA64) {
6a35528a 3716 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
31ea7088 3717
284901a9 3718 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
31ea7088 3719 goto fail_set_dma_mask;
3720 }
3721 } else {
284901a9 3722 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
31ea7088 3723 goto fail_set_dma_mask;
3724 }
3725 return 0;
3726
3727fail_set_dma_mask:
3728 return 1;
3729}
3730
c4a3e0a5
BS		 3731/**
3732 * megasas_probe_one - PCI hotplug entry point
3733 * @pdev: PCI device structure
3734 * @id: PCI ids of supported hotplugged adapter
3735 */
3736static int __devinit
3737megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
3738{
3739 int rval;
3740 struct Scsi_Host *host;
3741 struct megasas_instance *instance;
3742
3743 /*
3744 * Announce PCI information
3745 */
3746 printk(KERN_INFO "megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ",
3747 pdev->vendor, pdev->device, pdev->subsystem_vendor,
3748 pdev->subsystem_device);
3749
3750 printk("bus %d:slot %d:func %d\n",
3751 pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));
3752
3753 /*
3754 * PCI prepping: enable device set bus mastering and dma mask
3755 */
aeab3fd7 3756 rval = pci_enable_device_mem(pdev);
c4a3e0a5
BS		 3757
3758 if (rval) {
3759 return rval;
3760 }
3761
3762 pci_set_master(pdev);
3763
31ea7088 3764 if (megasas_set_dma_mask(pdev))
3765 goto fail_set_dma_mask;
c4a3e0a5
BS		 3766
3767 host = scsi_host_alloc(&megasas_template,
3768 sizeof(struct megasas_instance));
3769
3770 if (!host) {
3771 printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n");
3772 goto fail_alloc_instance;
3773 }
3774
3775 instance = (struct megasas_instance *)host->hostdata;
3776 memset(instance, 0, sizeof(*instance));
39a98554 3777 atomic_set( &instance->fw_reset_no_pci_access, 0 );
c4a3e0a5
BS		 3778
3779 instance->producer = pci_alloc_consistent(pdev, sizeof(u32),
3780 &instance->producer_h);
3781 instance->consumer = pci_alloc_consistent(pdev, sizeof(u32),
3782 &instance->consumer_h);
3783
3784 if (!instance->producer || !instance->consumer) {
3785 printk(KERN_DEBUG "megasas: Failed to allocate memory for "
3786 "producer, consumer\n");
3787 goto fail_alloc_dma_buf;
3788 }
3789
3790 *instance->producer = 0;
3791 *instance->consumer = 0;
c3518837 3792 megasas_poll_wait_aen = 0;
f4c9a131 3793 instance->flag_ieee = 0;
7e8a75f4 3794 instance->ev = NULL;
39a98554 3795 instance->issuepend_done = 1;
3796 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
3797 megasas_poll_wait_aen = 0;
c4a3e0a5
BS		 3798
3799 instance->evt_detail = pci_alloc_consistent(pdev,
3800 sizeof(struct
3801 megasas_evt_detail),
3802 &instance->evt_detail_h);
3803
3804 if (!instance->evt_detail) {
3805 printk(KERN_DEBUG "megasas: Failed to allocate memory for "
3806 "event detail structure\n");
3807 goto fail_alloc_dma_buf;
3808 }
3809
3810 /*
3811 * Initialize locks and queues
3812 */
3813 INIT_LIST_HEAD(&instance->cmd_pool);
39a98554 3814 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
c4a3e0a5 3815
e4a082c7
SP		 3816 atomic_set(&instance->fw_outstanding,0);
3817
c4a3e0a5
BS		 3818 init_waitqueue_head(&instance->int_cmd_wait_q);
3819 init_waitqueue_head(&instance->abort_cmd_wait_q);
3820
3821 spin_lock_init(&instance->cmd_pool_lock);
39a98554 3822 spin_lock_init(&instance->hba_lock);
7343eb65 3823 spin_lock_init(&instance->completion_lock);
c3518837 3824 spin_lock_init(&poll_aen_lock);
c4a3e0a5 3825
e5a69e27 3826 mutex_init(&instance->aen_mutex);
c4a3e0a5
BS		 3827
3828 /*
3829 * Initialize PCI related and misc parameters
3830 */
3831 instance->pdev = pdev;
3832 instance->host = host;
3833 instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
3834 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
3835
7bebf5c7
YB		 3836 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3837 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
f4c9a131 3838 instance->flag_ieee = 1;
7bebf5c7
YB		 3839 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
3840 } else
3841 sema_init(&instance->ioctl_sem, MEGASAS_INT_CMDS);
3842
658dcedb 3843 megasas_dbg_lvl = 0;
05e9ebbe 3844 instance->flag = 0;
0c79e681 3845 instance->unload = 1;
05e9ebbe 3846 instance->last_time = 0;
39a98554 3847 instance->disableOnlineCtrlReset = 1;
3848
3849 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
658dcedb 3850
c4a3e0a5
BS		 3851 /*
3852 * Initialize MFI Firmware
3853 */
3854 if (megasas_init_mfi(instance))
3855 goto fail_init_mfi;
3856
3857 /*
3858 * Register IRQ
3859 */
1d6f359a 3860 if (request_irq(pdev->irq, megasas_isr, IRQF_SHARED, "megasas", instance)) {
c4a3e0a5
BS		 3861 printk(KERN_DEBUG "megasas: Failed to register IRQ\n");
3862 goto fail_irq;
3863 }
3864
1341c939 3865 instance->instancet->enable_intr(instance->reg_set);
c4a3e0a5
BS		 3866
3867 /*
3868 * Store instance in PCI softstate
3869 */
3870 pci_set_drvdata(pdev, instance);
3871
3872 /*
3873 * Add this controller to megasas_mgmt_info structure so that it
3874 * can be exported to management applications
3875 */
3876 megasas_mgmt_info.count++;
3877 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
3878 megasas_mgmt_info.max_index++;
3879
3880 /*
3881 * Initiate AEN (Asynchronous Event Notification)
3882 */
3883 if (megasas_start_aen(instance)) {
3884 printk(KERN_DEBUG "megasas: start aen failed\n");
3885 goto fail_start_aen;
3886 }
3887
3888 /*
3889 * Register with SCSI mid-layer
3890 */
3891 if (megasas_io_attach(instance))
3892 goto fail_io_attach;
3893
0c79e681 3894 instance->unload = 0;
c4a3e0a5
BS		 3895 return 0;
3896
3897 fail_start_aen:
3898 fail_io_attach:
3899 megasas_mgmt_info.count--;
3900 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
3901 megasas_mgmt_info.max_index--;
3902
3903 pci_set_drvdata(pdev, NULL);
b274cab7 3904 instance->instancet->disable_intr(instance->reg_set);
c4a3e0a5
BS		 3905 free_irq(instance->pdev->irq, instance);
3906
3907 megasas_release_mfi(instance);
3908
3909 fail_irq:
3910 fail_init_mfi:
3911 fail_alloc_dma_buf:
3912 if (instance->evt_detail)
3913 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
3914 instance->evt_detail,
3915 instance->evt_detail_h);
3916
3917 if (instance->producer)
3918 pci_free_consistent(pdev, sizeof(u32), instance->producer,
3919 instance->producer_h);
3920 if (instance->consumer)
3921 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
3922 instance->consumer_h);
3923 scsi_host_put(host);
3924
3925 fail_alloc_instance:
3926 fail_set_dma_mask:
3927 pci_disable_device(pdev);
3928
3929 return -ENODEV;
3930}
3931
3932/**
3933 * megasas_flush_cache - Requests FW to flush all its caches
3934 * @instance: Adapter soft state
3935 */
3936static void megasas_flush_cache(struct megasas_instance *instance)
3937{
3938 struct megasas_cmd *cmd;
3939 struct megasas_dcmd_frame *dcmd;
3940
39a98554 3941 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
3942 return;
3943
c4a3e0a5
BS		 3944 cmd = megasas_get_cmd(instance);
3945
3946 if (!cmd)
3947 return;
3948
3949 dcmd = &cmd->frame->dcmd;
3950
3951 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3952
3953 dcmd->cmd = MFI_CMD_DCMD;
3954 dcmd->cmd_status = 0x0;
3955 dcmd->sge_count = 0;
3956 dcmd->flags = MFI_FRAME_DIR_NONE;
3957 dcmd->timeout = 0;
780a3762 3958 dcmd->pad_0 = 0;
c4a3e0a5
BS		 3959 dcmd->data_xfer_len = 0;
3960 dcmd->opcode = MR_DCMD_CTRL_CACHE_FLUSH;
3961 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
3962
3963 megasas_issue_blocked_cmd(instance, cmd);
3964
3965 megasas_return_cmd(instance, cmd);
3966
3967 return;
3968}
3969
3970/**
3971 * megasas_shutdown_controller - Instructs FW to shutdown the controller
3972 * @instance: Adapter soft state
31ea7088 3973 * @opcode: Shutdown/Hibernate
c4a3e0a5 3974 */
31ea7088 3975static void megasas_shutdown_controller(struct megasas_instance *instance,
3976 u32 opcode)
c4a3e0a5
BS		 3977{
3978 struct megasas_cmd *cmd;
3979 struct megasas_dcmd_frame *dcmd;
3980
39a98554 3981 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
3982 return;
3983
c4a3e0a5
BS		 3984 cmd = megasas_get_cmd(instance);
3985
3986 if (!cmd)
3987 return;
3988
3989 if (instance->aen_cmd)
3990 megasas_issue_blocked_abort_cmd(instance, instance->aen_cmd);
3991
3992 dcmd = &cmd->frame->dcmd;
3993
3994 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3995
3996 dcmd->cmd = MFI_CMD_DCMD;
3997 dcmd->cmd_status = 0x0;
3998 dcmd->sge_count = 0;
3999 dcmd->flags = MFI_FRAME_DIR_NONE;
4000 dcmd->timeout = 0;
780a3762 4001 dcmd->pad_0 = 0;
c4a3e0a5 4002 dcmd->data_xfer_len = 0;
31ea7088 4003 dcmd->opcode = opcode;
c4a3e0a5
BS		 4004
4005 megasas_issue_blocked_cmd(instance, cmd);
4006
4007 megasas_return_cmd(instance, cmd);
4008
4009 return;
4010}
4011
33139b21 4012#ifdef CONFIG_PM
31ea7088 4013/**
ad84db2e 4014 * megasas_suspend - driver suspend entry point
4015 * @pdev: PCI device structure
31ea7088 4016 * @state: PCI power state to suspend routine
4017 */
33139b21 4018static int
31ea7088 4019megasas_suspend(struct pci_dev *pdev, pm_message_t state)
4020{
4021 struct Scsi_Host *host;
4022 struct megasas_instance *instance;
4023
4024 instance = pci_get_drvdata(pdev);
4025 host = instance->host;
0c79e681 4026 instance->unload = 1;
31ea7088 4027
ad84db2e 4028 if (poll_mode_io)
4029 del_timer_sync(&instance->io_completion_timer);
4030
31ea7088 4031 megasas_flush_cache(instance);
4032 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
7e8a75f4
YB		 4033
4034 /* cancel the delayed work if this work still in queue */
4035 if (instance->ev != NULL) {
4036 struct megasas_aen_event *ev = instance->ev;
4037 cancel_delayed_work(
4038 (struct delayed_work *)&ev->hotplug_work);
4039 flush_scheduled_work();
4040 instance->ev = NULL;
4041 }
4042
31ea7088 4043 tasklet_kill(&instance->isr_tasklet);
4044
4045 pci_set_drvdata(instance->pdev, instance);
4046 instance->instancet->disable_intr(instance->reg_set);
4047 free_irq(instance->pdev->irq, instance);
4048
4049 pci_save_state(pdev);
4050 pci_disable_device(pdev);
4051
4052 pci_set_power_state(pdev, pci_choose_state(pdev, state));
4053
4054 return 0;
4055}
4056
4057/**
4058 * megasas_resume- driver resume entry point
4059 * @pdev: PCI device structure
4060 */
33139b21 4061static int
31ea7088 4062megasas_resume(struct pci_dev *pdev)
4063{
4064 int rval;
4065 struct Scsi_Host *host;
4066 struct megasas_instance *instance;
4067
4068 instance = pci_get_drvdata(pdev);
4069 host = instance->host;
4070 pci_set_power_state(pdev, PCI_D0);
4071 pci_enable_wake(pdev, PCI_D0, 0);
4072 pci_restore_state(pdev);
4073
4074 /*
4075 * PCI prepping: enable device set bus mastering and dma mask
4076 */
aeab3fd7 4077 rval = pci_enable_device_mem(pdev);
31ea7088 4078
4079 if (rval) {
4080 printk(KERN_ERR "megasas: Enable device failed\n");
4081 return rval;
4082 }
4083
4084 pci_set_master(pdev);
4085
4086 if (megasas_set_dma_mask(pdev))
4087 goto fail_set_dma_mask;
4088
4089 /*
4090 * Initialize MFI Firmware
4091 */
4092
4093 *instance->producer = 0;
4094 *instance->consumer = 0;
4095
4096 atomic_set(&instance->fw_outstanding, 0);
4097
4098 /*
4099 * We expect the FW state to be READY
4100 */
4101 if (megasas_transition_to_ready(instance))
4102 goto fail_ready_state;
4103
4104 if (megasas_issue_init_mfi(instance))
4105 goto fail_init_mfi;
4106
4107 tasklet_init(&instance->isr_tasklet, megasas_complete_cmd_dpc,
4108 (unsigned long)instance);
4109
4110 /*
4111 * Register IRQ
4112 */
4113 if (request_irq(pdev->irq, megasas_isr, IRQF_SHARED,
4114 "megasas", instance)) {
4115 printk(KERN_ERR "megasas: Failed to register IRQ\n");
4116 goto fail_irq;
4117 }
4118
4119 instance->instancet->enable_intr(instance->reg_set);
4120
4121 /*
4122 * Initiate AEN (Asynchronous Event Notification)
4123 */
4124 if (megasas_start_aen(instance))
4125 printk(KERN_ERR "megasas: Start AEN failed\n");
4126
ad84db2e 4127 /* Initialize the cmd completion timer */
4128 if (poll_mode_io)
4129 megasas_start_timer(instance, &instance->io_completion_timer,
4130 megasas_io_completion_timer,
4131 MEGASAS_COMPLETION_TIMER_INTERVAL);
0c79e681
YB		 4132 instance->unload = 0;
4133
31ea7088 4134 return 0;
4135
4136fail_irq:
4137fail_init_mfi:
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
4143 if (instance->producer)
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
4151fail_set_dma_mask:
4152fail_ready_state:
4153
4154 pci_disable_device(pdev);
4155
4156 return -ENODEV;
4157}
33139b21
JS		 4158#else
4159#define megasas_suspend NULL
4160#define megasas_resume NULL
4161#endif
31ea7088 4162
c4a3e0a5
BS		 4163/**
4164 * megasas_detach_one - PCI hot"un"plug entry point
4165 * @pdev: PCI device structure
4166 */
33139b21 4167static void __devexit megasas_detach_one(struct pci_dev *pdev)
c4a3e0a5
BS		 4168{
4169 int i;
4170 struct Scsi_Host *host;
4171 struct megasas_instance *instance;
4172
4173 instance = pci_get_drvdata(pdev);
c3518837 4174 instance->unload = 1;
c4a3e0a5
BS		 4175 host = instance->host;
4176
ad84db2e 4177 if (poll_mode_io)
4178 del_timer_sync(&instance->io_completion_timer);
4179
c4a3e0a5
BS		 4180 scsi_remove_host(instance->host);
4181 megasas_flush_cache(instance);
31ea7088 4182 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7e8a75f4
YB		 4183
4184 /* cancel the delayed work if this work still in queue*/
4185 if (instance->ev != NULL) {
4186 struct megasas_aen_event *ev = instance->ev;
4187 cancel_delayed_work(
4188 (struct delayed_work *)&ev->hotplug_work);
4189 flush_scheduled_work();
4190 instance->ev = NULL;
4191 }
4192
5d018ad0 4193 tasklet_kill(&instance->isr_tasklet);
c4a3e0a5
BS		 4194
4195 /*
4196 * Take the instance off the instance array. Note that we will not
4197 * decrement the max_index. We let this array be sparse array
4198 */
4199 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
4200 if (megasas_mgmt_info.instance[i] == instance) {
4201 megasas_mgmt_info.count--;
4202 megasas_mgmt_info.instance[i] = NULL;
4203
4204 break;
4205 }
4206 }
4207
4208 pci_set_drvdata(instance->pdev, NULL);
4209
b274cab7 4210 instance->instancet->disable_intr(instance->reg_set);
c4a3e0a5
BS		 4211
4212 free_irq(instance->pdev->irq, instance);
4213
4214 megasas_release_mfi(instance);
4215
4216 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
4217 instance->evt_detail, instance->evt_detail_h);
4218
4219 pci_free_consistent(pdev, sizeof(u32), instance->producer,
4220 instance->producer_h);
4221
4222 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
4223 instance->consumer_h);
4224
4225 scsi_host_put(host);
4226
4227 pci_set_drvdata(pdev, NULL);
4228
4229 pci_disable_device(pdev);
4230
4231 return;
4232}
4233
4234/**
4235 * megasas_shutdown - Shutdown entry point
4236 * @device: Generic device structure
4237 */
4238static void megasas_shutdown(struct pci_dev *pdev)
4239{
4240 struct megasas_instance *instance = pci_get_drvdata(pdev);
0c79e681 4241 instance->unload = 1;
c4a3e0a5 4242 megasas_flush_cache(instance);
530e6fc1 4243 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
c4a3e0a5
BS		 4244}
4245
4246/**
4247 * megasas_mgmt_open - char node "open" entry point
4248 */
4249static int megasas_mgmt_open(struct inode *inode, struct file *filep)
4250{
4251 /*
4252 * Allow only those users with admin rights
4253 */
4254 if (!capable(CAP_SYS_ADMIN))
4255 return -EACCES;
4256
4257 return 0;
4258}
4259
c4a3e0a5
BS		 4260/**
4261 * megasas_mgmt_fasync - Async notifier registration from applications
4262 *
4263 * This function adds the calling process to a driver global queue. When an
4264 * event occurs, SIGIO will be sent to all processes in this queue.
4265 */
4266static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
4267{
4268 int rc;
4269
0b950672 4270 mutex_lock(&megasas_async_queue_mutex);
c4a3e0a5
BS		 4271
4272 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
4273
0b950672 4274 mutex_unlock(&megasas_async_queue_mutex);
c4a3e0a5
BS		 4275
4276 if (rc >= 0) {
4277 /* For sanity check when we get ioctl */
4278 filep->private_data = filep;
4279 return 0;
4280 }
4281
4282 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
4283
4284 return rc;
4285}
4286
c3518837
YB		 4287/**
4288 * megasas_mgmt_poll - char node "poll" entry point
4289 * */
4290static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait)
4291{
4292 unsigned int mask;
4293 unsigned long flags;
4294 poll_wait(file, &megasas_poll_wait, wait);
4295 spin_lock_irqsave(&poll_aen_lock, flags);
4296 if (megasas_poll_wait_aen)
4297 mask = (POLLIN | POLLRDNORM);
4298 else
4299 mask = 0;
4300 spin_unlock_irqrestore(&poll_aen_lock, flags);
4301 return mask;
4302}
4303
c4a3e0a5
BS		 4304/**
4305 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
4306 * @instance: Adapter soft state
4307 * @argp: User's ioctl packet
4308 */
4309static int
4310megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
4311 struct megasas_iocpacket __user * user_ioc,
4312 struct megasas_iocpacket *ioc)
4313{
4314 struct megasas_sge32 *kern_sge32;
4315 struct megasas_cmd *cmd;
4316 void *kbuff_arr[MAX_IOCTL_SGE];
4317 dma_addr_t buf_handle = 0;
4318 int error = 0, i;
4319 void *sense = NULL;
4320 dma_addr_t sense_handle;
7b2519af 4321 unsigned long *sense_ptr;
c4a3e0a5
BS		 4322
4323 memset(kbuff_arr, 0, sizeof(kbuff_arr));
4324
4325 if (ioc->sge_count > MAX_IOCTL_SGE) {
4326 printk(KERN_DEBUG "megasas: SGE count [%d] > max limit [%d]\n",
4327 ioc->sge_count, MAX_IOCTL_SGE);
4328 return -EINVAL;
4329 }
4330
4331 cmd = megasas_get_cmd(instance);
4332 if (!cmd) {
4333 printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n");
4334 return -ENOMEM;
4335 }
4336
4337 /*
4338 * User's IOCTL packet has 2 frames (maximum). Copy those two
4339 * frames into our cmd's frames. cmd->frame's context will get
4340 * overwritten when we copy from user's frames. So set that value
4341 * alone separately
4342 */
4343 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
4344 cmd->frame->hdr.context = cmd->index;
c3518837 4345 cmd->frame->hdr.pad_0 = 0;
c4a3e0a5
BS		 4346
4347 /*
4348 * The management interface between applications and the fw uses
4349 * MFI frames. E.g, RAID configuration changes, LD property changes
4350 * etc are accomplishes through different kinds of MFI frames. The
4351 * driver needs to care only about substituting user buffers with
4352 * kernel buffers in SGLs. The location of SGL is embedded in the
4353 * struct iocpacket itself.
4354 */
4355 kern_sge32 = (struct megasas_sge32 *)
4356 ((unsigned long)cmd->frame + ioc->sgl_off);
4357
4358 /*
4359 * For each user buffer, create a mirror buffer and copy in
4360 */
4361 for (i = 0; i < ioc->sge_count; i++) {
9f35fa8a 4362 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
c4a3e0a5 4363 ioc->sgl[i].iov_len,
9f35fa8a 4364 &buf_handle, GFP_KERNEL);
c4a3e0a5
BS		 4365 if (!kbuff_arr[i]) {
4366 printk(KERN_DEBUG "megasas: Failed to alloc "
4367 "kernel SGL buffer for IOCTL \n");
4368 error = -ENOMEM;
4369 goto out;
4370 }
4371
4372 /*
4373 * We don't change the dma_coherent_mask, so
4374 * pci_alloc_consistent only returns 32bit addresses
4375 */
4376 kern_sge32[i].phys_addr = (u32) buf_handle;
4377 kern_sge32[i].length = ioc->sgl[i].iov_len;
4378
4379 /*
4380 * We created a kernel buffer corresponding to the
4381 * user buffer. Now copy in from the user buffer
4382 */
4383 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
4384 (u32) (ioc->sgl[i].iov_len))) {
4385 error = -EFAULT;
4386 goto out;
4387 }
4388 }
4389
4390 if (ioc->sense_len) {
9f35fa8a
SP		 4391 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
4392 &sense_handle, GFP_KERNEL);
c4a3e0a5
BS		 4393 if (!sense) {
4394 error = -ENOMEM;
4395 goto out;
4396 }
4397
4398 sense_ptr =
7b2519af 4399 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
c4a3e0a5
BS		 4400 *sense_ptr = sense_handle;
4401 }
4402
4403 /*
4404 * Set the sync_cmd flag so that the ISR knows not to complete this
4405 * cmd to the SCSI mid-layer
4406 */
4407 cmd->sync_cmd = 1;
4408 megasas_issue_blocked_cmd(instance, cmd);
4409 cmd->sync_cmd = 0;
4410
4411 /*
4412 * copy out the kernel buffers to user buffers
4413 */
4414 for (i = 0; i < ioc->sge_count; i++) {
4415 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
4416 ioc->sgl[i].iov_len)) {
4417 error = -EFAULT;
4418 goto out;
4419 }
4420 }
4421
4422 /*
4423 * copy out the sense
4424 */
4425 if (ioc->sense_len) {
4426 /*
b70a41e0 4427 * sense_ptr points to the location that has the user
c4a3e0a5
BS		 4428 * sense buffer address
4429 */
7b2519af
YB		 4430 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
4431 ioc->sense_off);
c4a3e0a5 4432
b70a41e0 4433 if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)),
4434 sense, ioc->sense_len)) {
b10c36a5 4435 printk(KERN_ERR "megasas: Failed to copy out to user "
4436 "sense data\n");
c4a3e0a5
BS		 4437 error = -EFAULT;
4438 goto out;
4439 }
4440 }
4441
4442 /*
4443 * copy the status codes returned by the fw
4444 */
4445 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
4446 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
4447 printk(KERN_DEBUG "megasas: Error copying out cmd_status\n");
4448 error = -EFAULT;
4449 }
4450
4451 out:
4452 if (sense) {
9f35fa8a 4453 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
c4a3e0a5
BS		 4454 sense, sense_handle);
4455 }
4456
4457 for (i = 0; i < ioc->sge_count && kbuff_arr[i]; i++) {
9f35fa8a 4458 dma_free_coherent(&instance->pdev->dev,
c4a3e0a5
BS		 4459 kern_sge32[i].length,
4460 kbuff_arr[i], kern_sge32[i].phys_addr);
4461 }
4462
4463 megasas_return_cmd(instance, cmd);
4464 return error;
4465}
4466
c4a3e0a5
BS		 4467static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
4468{
4469 struct megasas_iocpacket __user *user_ioc =
4470 (struct megasas_iocpacket __user *)arg;
4471 struct megasas_iocpacket *ioc;
4472 struct megasas_instance *instance;
4473 int error;
39a98554 4474 int i;
4475 unsigned long flags;
4476 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 4477
4478 ioc = kmalloc(sizeof(*ioc), GFP_KERNEL);
4479 if (!ioc)
4480 return -ENOMEM;
4481
4482 if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) {
4483 error = -EFAULT;
4484 goto out_kfree_ioc;
4485 }
4486
4487 instance = megasas_lookup_instance(ioc->host_no);
4488 if (!instance) {
4489 error = -ENODEV;
4490 goto out_kfree_ioc;
4491 }
4492
39a98554 4493 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
4494 printk(KERN_ERR "Controller in crit error\n");
0c79e681
YB		 4495 error = -ENODEV;
4496 goto out_kfree_ioc;
4497 }
4498
4499 if (instance->unload == 1) {
4500 error = -ENODEV;
4501 goto out_kfree_ioc;
4502 }
4503
c4a3e0a5
BS		 4504 /*
4505 * We will allow only MEGASAS_INT_CMDS number of parallel ioctl cmds
4506 */
4507 if (down_interruptible(&instance->ioctl_sem)) {
4508 error = -ERESTARTSYS;
4509 goto out_kfree_ioc;
4510 }
39a98554 4511
4512 for (i = 0; i < wait_time; i++) {
4513
4514 spin_lock_irqsave(&instance->hba_lock, flags);
4515 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
4516 spin_unlock_irqrestore(&instance->hba_lock, flags);
4517 break;
4518 }
4519 spin_unlock_irqrestore(&instance->hba_lock, flags);
4520
4521 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
4522 printk(KERN_NOTICE "megasas: waiting"
4523 "for controller reset to finish\n");
4524 }
4525
4526 msleep(1000);
4527 }
4528
4529 spin_lock_irqsave(&instance->hba_lock, flags);
4530 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
4531 spin_unlock_irqrestore(&instance->hba_lock, flags);
4532
4533 printk(KERN_ERR "megaraid_sas: timed out while"
4534 "waiting for HBA to recover\n");
4535 error = -ENODEV;
4536 goto out_kfree_ioc;
4537 }
4538 spin_unlock_irqrestore(&instance->hba_lock, flags);
4539
c4a3e0a5
BS		 4540 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
4541 up(&instance->ioctl_sem);
4542
4543 out_kfree_ioc:
4544 kfree(ioc);
4545 return error;
4546}
4547
4548static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
4549{
4550 struct megasas_instance *instance;
4551 struct megasas_aen aen;
4552 int error;
39a98554 4553 int i;
4554 unsigned long flags;
4555 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 4556
4557 if (file->private_data != file) {
4558 printk(KERN_DEBUG "megasas: fasync_helper was not "
4559 "called first\n");
4560 return -EINVAL;
4561 }
4562
4563 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
4564 return -EFAULT;
4565
4566 instance = megasas_lookup_instance(aen.host_no);
4567
4568 if (!instance)
4569 return -ENODEV;
4570
39a98554 4571 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
4572 return -ENODEV;
0c79e681
YB		 4573 }
4574
4575 if (instance->unload == 1) {
4576 return -ENODEV;
4577 }
4578
39a98554 4579 for (i = 0; i < wait_time; i++) {
4580
4581 spin_lock_irqsave(&instance->hba_lock, flags);
4582 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
4583 spin_unlock_irqrestore(&instance->hba_lock,
4584 flags);
4585 break;
4586 }
4587
4588 spin_unlock_irqrestore(&instance->hba_lock, flags);
4589
4590 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
4591 printk(KERN_NOTICE "megasas: waiting for"
4592 "controller reset to finish\n");
4593 }
4594
4595 msleep(1000);
4596 }
4597
4598 spin_lock_irqsave(&instance->hba_lock, flags);
4599 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
4600 spin_unlock_irqrestore(&instance->hba_lock, flags);
4601 printk(KERN_ERR "megaraid_sas: timed out while waiting"
4602 "for HBA to recover.\n");
4603 return -ENODEV;
4604 }
4605 spin_unlock_irqrestore(&instance->hba_lock, flags);
4606
e5a69e27 4607 mutex_lock(&instance->aen_mutex);
c4a3e0a5
BS		 4608 error = megasas_register_aen(instance, aen.seq_num,
4609 aen.class_locale_word);
e5a69e27 4610 mutex_unlock(&instance->aen_mutex);
c4a3e0a5
BS		 4611 return error;
4612}
4613
4614/**
4615 * megasas_mgmt_ioctl - char node ioctl entry point
4616 */
4617static long
4618megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
4619{
4620 switch (cmd) {
4621 case MEGASAS_IOC_FIRMWARE:
4622 return megasas_mgmt_ioctl_fw(file, arg);
4623
4624 case MEGASAS_IOC_GET_AEN:
4625 return megasas_mgmt_ioctl_aen(file, arg);
4626 }
4627
4628 return -ENOTTY;
4629}
4630
4631#ifdef CONFIG_COMPAT
4632static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
4633{
4634 struct compat_megasas_iocpacket __user *cioc =
4635 (struct compat_megasas_iocpacket __user *)arg;
4636 struct megasas_iocpacket __user *ioc =
4637 compat_alloc_user_space(sizeof(struct megasas_iocpacket));
4638 int i;
4639 int error = 0;
b3dc1a21 4640 compat_uptr_t ptr;
c4a3e0a5 4641
83aabc1b
JG		 4642 if (clear_user(ioc, sizeof(*ioc)))
4643 return -EFAULT;
c4a3e0a5
BS		 4644
4645 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
4646 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
4647 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
4648 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
4649 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
4650 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
4651 return -EFAULT;
4652
b3dc1a21
TH		 4653 /*
4654 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
4655 * sense_len is not null, so prepare the 64bit value under
4656 * the same condition.
4657 */
4658 if (ioc->sense_len) {
4659 void __user **sense_ioc_ptr =
4660 (void __user **)(ioc->frame.raw + ioc->sense_off);
4661 compat_uptr_t *sense_cioc_ptr =
4662 (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off);
4663 if (get_user(ptr, sense_cioc_ptr) ||
4664 put_user(compat_ptr(ptr), sense_ioc_ptr))
4665 return -EFAULT;
4666 }
c4a3e0a5 4667
b3dc1a21 4668 for (i = 0; i < MAX_IOCTL_SGE; i++) {
c4a3e0a5
BS		 4669 if (get_user(ptr, &cioc->sgl[i].iov_base) ||
4670 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
4671 copy_in_user(&ioc->sgl[i].iov_len,
4672 &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
4673 return -EFAULT;
4674 }
4675
4676 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
4677
4678 if (copy_in_user(&cioc->frame.hdr.cmd_status,
4679 &ioc->frame.hdr.cmd_status, sizeof(u8))) {
4680 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
4681 return -EFAULT;
4682 }
4683 return error;
4684}
4685
4686static long
4687megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
4688 unsigned long arg)
4689{
4690 switch (cmd) {
cb59aa6a
SP		 4691 case MEGASAS_IOC_FIRMWARE32:
4692 return megasas_mgmt_compat_ioctl_fw(file, arg);
c4a3e0a5
BS		 4693 case MEGASAS_IOC_GET_AEN:
4694 return megasas_mgmt_ioctl_aen(file, arg);
4695 }
4696
4697 return -ENOTTY;
4698}
4699#endif
4700
4701/*
4702 * File operations structure for management interface
4703 */
00977a59 4704static const struct file_operations megasas_mgmt_fops = {
c4a3e0a5
BS		 4705 .owner = THIS_MODULE,
4706 .open = megasas_mgmt_open,
c4a3e0a5
BS		 4707 .fasync = megasas_mgmt_fasync,
4708 .unlocked_ioctl = megasas_mgmt_ioctl,
c3518837 4709 .poll = megasas_mgmt_poll,
c4a3e0a5
BS		 4710#ifdef CONFIG_COMPAT
4711 .compat_ioctl = megasas_mgmt_compat_ioctl,
4712#endif
6038f373 4713 .llseek = noop_llseek,
c4a3e0a5
BS		 4714};
4715
4716/*
4717 * PCI hotplug support registration structure
4718 */
4719static struct pci_driver megasas_pci_driver = {
4720
4721 .name = "megaraid_sas",
4722 .id_table = megasas_pci_table,
4723 .probe = megasas_probe_one,
4724 .remove = __devexit_p(megasas_detach_one),
31ea7088 4725 .suspend = megasas_suspend,
4726 .resume = megasas_resume,
c4a3e0a5
BS		 4727 .shutdown = megasas_shutdown,
4728};
4729
4730/*
4731 * Sysfs driver attributes
4732 */
4733static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf)
4734{
4735 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
4736 MEGASAS_VERSION);
4737}
4738
4739static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL);
4740
4741static ssize_t
4742megasas_sysfs_show_release_date(struct device_driver *dd, char *buf)
4743{
4744 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
4745 MEGASAS_RELDATE);
4746}
4747
4748static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date,
4749 NULL);
4750
72c4fd36
YB		 4751static ssize_t
4752megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf)
4753{
4754 return sprintf(buf, "%u\n", support_poll_for_event);
4755}
4756
4757static DRIVER_ATTR(support_poll_for_event, S_IRUGO,
4758 megasas_sysfs_show_support_poll_for_event, NULL);
4759
837f5fe8
YB		 4760 static ssize_t
4761megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf)
4762{
4763 return sprintf(buf, "%u\n", support_device_change);
4764}
4765
4766static DRIVER_ATTR(support_device_change, S_IRUGO,
4767 megasas_sysfs_show_support_device_change, NULL);
4768
658dcedb
SP		 4769static ssize_t
4770megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf)
4771{
ad84db2e 4772 return sprintf(buf, "%u\n", megasas_dbg_lvl);
658dcedb
SP		 4773}
4774
4775static ssize_t
4776megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count)
4777{
4778 int retval = count;
4779 if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){
4780 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
4781 retval = -EINVAL;
4782 }
4783 return retval;
4784}
4785
66dca9b8 4786static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl,
ad84db2e 4787 megasas_sysfs_set_dbg_lvl);
4788
4789static ssize_t
4790megasas_sysfs_show_poll_mode_io(struct device_driver *dd, char *buf)
4791{
4792 return sprintf(buf, "%u\n", poll_mode_io);
4793}
4794
4795static ssize_t
4796megasas_sysfs_set_poll_mode_io(struct device_driver *dd,
4797 const char *buf, size_t count)
4798{
4799 int retval = count;
4800 int tmp = poll_mode_io;
4801 int i;
4802 struct megasas_instance *instance;
4803
4804 if (sscanf(buf, "%u", &poll_mode_io) < 1) {
4805 printk(KERN_ERR "megasas: could not set poll_mode_io\n");
4806 retval = -EINVAL;
4807 }
4808
4809 /*
4810 * Check if poll_mode_io is already set or is same as previous value
4811 */
4812 if ((tmp && poll_mode_io) || (tmp == poll_mode_io))
4813 goto out;
4814
4815 if (poll_mode_io) {
4816 /*
4817 * Start timers for all adapters
4818 */
4819 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
4820 instance = megasas_mgmt_info.instance[i];
4821 if (instance) {
4822 megasas_start_timer(instance,
4823 &instance->io_completion_timer,
4824 megasas_io_completion_timer,
4825 MEGASAS_COMPLETION_TIMER_INTERVAL);
4826 }
4827 }
4828 } else {
4829 /*
4830 * Delete timers for all adapters
4831 */
4832 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
4833 instance = megasas_mgmt_info.instance[i];
4834 if (instance)
4835 del_timer_sync(&instance->io_completion_timer);
4836 }
4837 }
4838
4839out:
4840 return retval;
4841}
4842
7e8a75f4
YB		 4843static void
4844megasas_aen_polling(struct work_struct *work)
4845{
4846 struct megasas_aen_event *ev =
4847 container_of(work, struct megasas_aen_event, hotplug_work);
4848 struct megasas_instance *instance = ev->instance;
4849 union megasas_evt_class_locale class_locale;
4850 struct Scsi_Host *host;
4851 struct scsi_device *sdev1;
4852 u16 pd_index = 0;
c9786842 4853 u16 ld_index = 0;
7e8a75f4
YB		 4854 int i, j, doscan = 0;
4855 u32 seq_num;
4856 int error;
4857
4858 if (!instance) {
4859 printk(KERN_ERR "invalid instance!\n");
4860 kfree(ev);
4861 return;
4862 }
4863 instance->ev = NULL;
4864 host = instance->host;
4865 if (instance->evt_detail) {
4866
4867 switch (instance->evt_detail->code) {
4868 case MR_EVT_PD_INSERTED:
c9786842
YB		 4869 if (megasas_get_pd_list(instance) == 0) {
4870 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
4871 for (j = 0;
4872 j < MEGASAS_MAX_DEV_PER_CHANNEL;
4873 j++) {
4874
4875 pd_index =
4876 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
4877
4878 sdev1 =
4879 scsi_device_lookup(host, i, j, 0);
4880
4881 if (instance->pd_list[pd_index].driveState
4882 == MR_PD_STATE_SYSTEM) {
4883 if (!sdev1) {
4884 scsi_add_device(host, i, j, 0);
4885 }
4886
4887 if (sdev1)
4888 scsi_device_put(sdev1);
4889 }
4890 }
4891 }
4892 }
4893 doscan = 0;
4894 break;
4895
7e8a75f4 4896 case MR_EVT_PD_REMOVED:
c9786842
YB		 4897 if (megasas_get_pd_list(instance) == 0) {
4898 megasas_get_pd_list(instance);
4899 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
4900 for (j = 0;
4901 j < MEGASAS_MAX_DEV_PER_CHANNEL;
4902 j++) {
4903
4904 pd_index =
4905 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
4906
4907 sdev1 =
4908 scsi_device_lookup(host, i, j, 0);
4909
4910 if (instance->pd_list[pd_index].driveState
4911 == MR_PD_STATE_SYSTEM) {
4912 if (sdev1) {
4913 scsi_device_put(sdev1);
4914 }
4915 } else {
4916 if (sdev1) {
4917 scsi_remove_device(sdev1);
4918 scsi_device_put(sdev1);
4919 }
4920 }
4921 }
4922 }
4923 }
4924 doscan = 0;
4925 break;
4926
4927 case MR_EVT_LD_OFFLINE:
4928 case MR_EVT_LD_DELETED:
4929 megasas_get_ld_list(instance);
4930 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
4931 for (j = 0;
4932 j < MEGASAS_MAX_DEV_PER_CHANNEL;
4933 j++) {
4934
4935 ld_index =
4936 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
4937
4938 sdev1 = scsi_device_lookup(host,
4939 i + MEGASAS_MAX_LD_CHANNELS,
4940 j,
4941 0);
4942
4943 if (instance->ld_ids[ld_index] != 0xff) {
4944 if (sdev1) {
4945 scsi_device_put(sdev1);
4946 }
4947 } else {
4948 if (sdev1) {
4949 scsi_remove_device(sdev1);
4950 scsi_device_put(sdev1);
4951 }
4952 }
4953 }
4954 }
4955 doscan = 0;
4956 break;
4957 case MR_EVT_LD_CREATED:
4958 megasas_get_ld_list(instance);
4959 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
4960 for (j = 0;
4961 j < MEGASAS_MAX_DEV_PER_CHANNEL;
4962 j++) {
4963 ld_index =
4964 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
4965
4966 sdev1 = scsi_device_lookup(host,
4967 i+MEGASAS_MAX_LD_CHANNELS,
4968 j, 0);
4969
4970 if (instance->ld_ids[ld_index] !=
4971 0xff) {
4972 if (!sdev1) {
4973 scsi_add_device(host,
4974 i + 2,
4975 j, 0);
4976 }
4977 }
4978 if (sdev1) {
4979 scsi_device_put(sdev1);
4980 }
4981 }
4982 }
4983 doscan = 0;
4984 break;
7e8a75f4 4985 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
c9786842 4986 case MR_EVT_FOREIGN_CFG_IMPORTED:
7e8a75f4
YB		 4987 doscan = 1;
4988 break;
4989 default:
4990 doscan = 0;
4991 break;
4992 }
4993 } else {
4994 printk(KERN_ERR "invalid evt_detail!\n");
4995 kfree(ev);
4996 return;
4997 }
4998
4999 if (doscan) {
5000 printk(KERN_INFO "scanning ...\n");
5001 megasas_get_pd_list(instance);
5002 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
5003 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
5004 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j;
5005 sdev1 = scsi_device_lookup(host, i, j, 0);
5006 if (instance->pd_list[pd_index].driveState ==
5007 MR_PD_STATE_SYSTEM) {
5008 if (!sdev1) {
5009 scsi_add_device(host, i, j, 0);
5010 }
5011 if (sdev1)
5012 scsi_device_put(sdev1);
5013 } else {
5014 if (sdev1) {
5015 scsi_remove_device(sdev1);
5016 scsi_device_put(sdev1);
5017 }
5018 }
5019 }
5020 }
c9786842
YB		 5021
5022 megasas_get_ld_list(instance);
5023 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
5024 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
5025 ld_index =
5026 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5027
5028 sdev1 = scsi_device_lookup(host,
5029 i+MEGASAS_MAX_LD_CHANNELS, j, 0);
5030 if (instance->ld_ids[ld_index] != 0xff) {
5031 if (!sdev1) {
5032 scsi_add_device(host,
5033 i+2,
5034 j, 0);
5035 } else {
5036 scsi_device_put(sdev1);
5037 }
5038 } else {
5039 if (sdev1) {
5040 scsi_remove_device(sdev1);
5041 scsi_device_put(sdev1);
5042 }
5043 }
5044 }
5045 }
7e8a75f4
YB		 5046 }
5047
5048 if ( instance->aen_cmd != NULL ) {
5049 kfree(ev);
5050 return ;
5051 }
5052
5053 seq_num = instance->evt_detail->seq_num + 1;
5054
5055 /* Register AEN with FW for latest sequence number plus 1 */
5056 class_locale.members.reserved = 0;
5057 class_locale.members.locale = MR_EVT_LOCALE_ALL;
5058 class_locale.members.class = MR_EVT_CLASS_DEBUG;
5059 mutex_lock(&instance->aen_mutex);
5060 error = megasas_register_aen(instance, seq_num,
5061 class_locale.word);
5062 mutex_unlock(&instance->aen_mutex);
5063
5064 if (error)
5065 printk(KERN_ERR "register aen failed error %x\n", error);
5066
5067 kfree(ev);
5068}
5069
5070
bb7d3f24 5071static DRIVER_ATTR(poll_mode_io, S_IRUGO|S_IWUSR,
ad84db2e 5072 megasas_sysfs_show_poll_mode_io,
5073 megasas_sysfs_set_poll_mode_io);
658dcedb 5074
c4a3e0a5
BS		 5075/**
5076 * megasas_init - Driver load entry point
5077 */
5078static int __init megasas_init(void)
5079{
5080 int rval;
5081
5082 /*
5083 * Announce driver version and other information
5084 */
5085 printk(KERN_INFO "megasas: %s %s\n", MEGASAS_VERSION,
5086 MEGASAS_EXT_VERSION);
5087
72c4fd36 5088 support_poll_for_event = 2;
837f5fe8 5089 support_device_change = 1;
72c4fd36 5090
c4a3e0a5
BS		 5091 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
5092
5093 /*
5094 * Register character device node
5095 */
5096 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
5097
5098 if (rval < 0) {
5099 printk(KERN_DEBUG "megasas: failed to open device node\n");
5100 return rval;
5101 }
5102
5103 megasas_mgmt_majorno = rval;
5104
5105 /*
5106 * Register ourselves as PCI hotplug module
5107 */
4041b9cd 5108 rval = pci_register_driver(&megasas_pci_driver);
c4a3e0a5
BS		 5109
5110 if (rval) {
5111 printk(KERN_DEBUG "megasas: PCI hotplug regisration failed \n");
83aabc1b
JG		 5112 goto err_pcidrv;
5113 }
5114
5115 rval = driver_create_file(&megasas_pci_driver.driver,
5116 &driver_attr_version);
5117 if (rval)
5118 goto err_dcf_attr_ver;
5119 rval = driver_create_file(&megasas_pci_driver.driver,
5120 &driver_attr_release_date);
5121 if (rval)
5122 goto err_dcf_rel_date;
72c4fd36
YB		 5123
5124 rval = driver_create_file(&megasas_pci_driver.driver,
5125 &driver_attr_support_poll_for_event);
5126 if (rval)
5127 goto err_dcf_support_poll_for_event;
5128
83aabc1b
JG		 5129 rval = driver_create_file(&megasas_pci_driver.driver,
5130 &driver_attr_dbg_lvl);
5131 if (rval)
5132 goto err_dcf_dbg_lvl;
ad84db2e 5133 rval = driver_create_file(&megasas_pci_driver.driver,
5134 &driver_attr_poll_mode_io);
5135 if (rval)
5136 goto err_dcf_poll_mode_io;
c4a3e0a5 5137
837f5fe8
YB		 5138 rval = driver_create_file(&megasas_pci_driver.driver,
5139 &driver_attr_support_device_change);
5140 if (rval)
5141 goto err_dcf_support_device_change;
5142
c4a3e0a5 5143 return rval;
ad84db2e 5144
837f5fe8
YB		 5145err_dcf_support_device_change:
5146 driver_remove_file(&megasas_pci_driver.driver,
5147 &driver_attr_poll_mode_io);
5148
ad84db2e 5149err_dcf_poll_mode_io:
5150 driver_remove_file(&megasas_pci_driver.driver,
5151 &driver_attr_dbg_lvl);
83aabc1b 5152err_dcf_dbg_lvl:
72c4fd36
YB		 5153 driver_remove_file(&megasas_pci_driver.driver,
5154 &driver_attr_support_poll_for_event);
5155
5156err_dcf_support_poll_for_event:
83aabc1b
JG		 5157 driver_remove_file(&megasas_pci_driver.driver,
5158 &driver_attr_release_date);
72c4fd36 5159
83aabc1b
JG		 5160err_dcf_rel_date:
5161 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
5162err_dcf_attr_ver:
5163 pci_unregister_driver(&megasas_pci_driver);
5164err_pcidrv:
5165 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
5166 return rval;
c4a3e0a5
BS		 5167}
5168
5169/**
5170 * megasas_exit - Driver unload entry point
5171 */
5172static void __exit megasas_exit(void)
5173{
ad84db2e 5174 driver_remove_file(&megasas_pci_driver.driver,
5175 &driver_attr_poll_mode_io);
658dcedb
SP		 5176 driver_remove_file(&megasas_pci_driver.driver,
5177 &driver_attr_dbg_lvl);
837f5fe8
YB		 5178 driver_remove_file(&megasas_pci_driver.driver,
5179 &driver_attr_support_poll_for_event);
5180 driver_remove_file(&megasas_pci_driver.driver,
5181 &driver_attr_support_device_change);
83aabc1b
JG		 5182 driver_remove_file(&megasas_pci_driver.driver,
5183 &driver_attr_release_date);
5184 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
c4a3e0a5
BS		 5185
5186 pci_unregister_driver(&megasas_pci_driver);
5187 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
5188}
5189
5190module_init(megasas_init);
5191module_exit(megasas_exit);
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