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Linux 3.15-rc5
[deliverable/linux.git] / drivers / scsi / megaraid / megaraid_sas_base.c
CommitLineData
c4a3e0a5 1/*
3f1530c1 2 * Linux MegaRAID driver for SAS based RAID controllers
c4a3e0a5 3 *
ae59057b 4 * Copyright (c) 2003-2012 LSI Corporation.
c4a3e0a5 5 *
3f1530c1 6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
c4a3e0a5 10 *
3f1530c1 11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
c4a3e0a5 15 *
3f1530c1 16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
c4a3e0a5 19 *
3f1530c1 20 * FILE: megaraid_sas_base.c
10b1db86 21 * Version : 06.803.01.00-rc1
c4a3e0a5 22 *
3f1530c1 23 * Authors: LSI Corporation
24 * Sreenivas Bagalkote
25 * Sumant Patro
26 * Bo Yang
00fa2b19 27 * Adam Radford <linuxraid@lsi.com>
c4a3e0a5 28 *
3f1530c1 29 * Send feedback to: <megaraidlinux@lsi.com>
30 *
31 * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035
32 * ATTN: Linuxraid
c4a3e0a5
BS		 33 */
34
35#include <linux/kernel.h>
36#include <linux/types.h>
37#include <linux/pci.h>
38#include <linux/list.h>
c4a3e0a5
BS		 39#include <linux/moduleparam.h>
40#include <linux/module.h>
41#include <linux/spinlock.h>
42#include <linux/interrupt.h>
43#include <linux/delay.h>
44#include <linux/uio.h>
5a0e3ad6 45#include <linux/slab.h>
c4a3e0a5 46#include <asm/uaccess.h>
43399236 47#include <linux/fs.h>
c4a3e0a5 48#include <linux/compat.h>
cf62a0a5 49#include <linux/blkdev.h>
0b950672 50#include <linux/mutex.h>
c3518837 51#include <linux/poll.h>
c4a3e0a5
BS		 52
53#include <scsi/scsi.h>
54#include <scsi/scsi_cmnd.h>
55#include <scsi/scsi_device.h>
56#include <scsi/scsi_host.h>
4bcde509 57#include <scsi/scsi_tcq.h>
9c915a8c 58#include "megaraid_sas_fusion.h"
c4a3e0a5
BS		 59#include "megaraid_sas.h"
60
1fd10685
YB		 61/*
62 * Number of sectors per IO command
63 * Will be set in megasas_init_mfi if user does not provide
64 */
65static unsigned int max_sectors;
66module_param_named(max_sectors, max_sectors, int, 0);
67MODULE_PARM_DESC(max_sectors,
68 "Maximum number of sectors per IO command");
69
80d9da98 70static int msix_disable;
71module_param(msix_disable, int, S_IRUGO);
72MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0");
73
079eaddf 74static unsigned int msix_vectors;
75module_param(msix_vectors, int, S_IRUGO);
76MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW");
77
229fe47c 78static int allow_vf_ioctls;
79module_param(allow_vf_ioctls, int, S_IRUGO);
80MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0");
81
c5daa6a9 82static int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH;
83module_param(throttlequeuedepth, int, S_IRUGO);
84MODULE_PARM_DESC(throttlequeuedepth,
85 "Adapter queue depth when throttled due to I/O timeout. Default: 16");
86
c007b8b2 87int resetwaittime = MEGASAS_RESET_WAIT_TIME;
88module_param(resetwaittime, int, S_IRUGO);
89MODULE_PARM_DESC(resetwaittime, "Wait time in seconds after I/O timeout "
90 "before resetting adapter. Default: 180");
91
c4a3e0a5
BS		 92MODULE_LICENSE("GPL");
93MODULE_VERSION(MEGASAS_VERSION);
3d6d174a 94MODULE_AUTHOR("megaraidlinux@lsi.com");
f28cd7cf 95MODULE_DESCRIPTION("LSI MegaRAID SAS Driver");
c4a3e0a5 96
058a8fac 97int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
39a98554 98static int megasas_get_pd_list(struct megasas_instance *instance);
21c9e160 99static int megasas_ld_list_query(struct megasas_instance *instance,
100 u8 query_type);
39a98554 101static int megasas_issue_init_mfi(struct megasas_instance *instance);
102static int megasas_register_aen(struct megasas_instance *instance,
103 u32 seq_num, u32 class_locale_word);
c4a3e0a5
BS		 104/*
105 * PCI ID table for all supported controllers
106 */
107static struct pci_device_id megasas_pci_table[] = {
108
f3d7271c
HK		 109 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
110 /* xscale IOP */
111 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
112 /* ppc IOP */
af7a5647 113 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
114 /* ppc IOP */
6610a6b3
YB		 115 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
116 /* gen2*/
117 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
118 /* gen2*/
87911122
YB		 119 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
120 /* skinny*/
121 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
122 /* skinny*/
f3d7271c
HK		 123 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
124 /* xscale IOP, vega */
125 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
126 /* xscale IOP */
9c915a8c 127 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
128 /* Fusion */
229fe47c 129 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)},
130 /* Plasma */
36807e67 131 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
132 /* Invader */
21d3c710
SS		 133 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
134 /* Fury */
f3d7271c 135 {}
c4a3e0a5
BS		 136};
137
138MODULE_DEVICE_TABLE(pci, megasas_pci_table);
139
140static int megasas_mgmt_majorno;
229fe47c 141struct megasas_mgmt_info megasas_mgmt_info;
c4a3e0a5 142static struct fasync_struct *megasas_async_queue;
0b950672 143static DEFINE_MUTEX(megasas_async_queue_mutex);
c4a3e0a5 144
c3518837
YB		 145static int megasas_poll_wait_aen;
146static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
72c4fd36 147static u32 support_poll_for_event;
9c915a8c 148u32 megasas_dbg_lvl;
837f5fe8 149static u32 support_device_change;
658dcedb 150
c3518837
YB		 151/* define lock for aen poll */
152spinlock_t poll_aen_lock;
153
9c915a8c 154void
7343eb65 155megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
156 u8 alt_status);
ebf054b0 157static u32
158megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs);
159static int
160megasas_adp_reset_gen2(struct megasas_instance *instance,
161 struct megasas_register_set __iomem *reg_set);
cd50ba8e 162static irqreturn_t megasas_isr(int irq, void *devp);
163static u32
164megasas_init_adapter_mfi(struct megasas_instance *instance);
165u32
166megasas_build_and_issue_cmd(struct megasas_instance *instance,
167 struct scsi_cmnd *scmd);
168static void megasas_complete_cmd_dpc(unsigned long instance_addr);
9c915a8c 169void
170megasas_release_fusion(struct megasas_instance *instance);
171int
172megasas_ioc_init_fusion(struct megasas_instance *instance);
173void
174megasas_free_cmds_fusion(struct megasas_instance *instance);
175u8
176megasas_get_map_info(struct megasas_instance *instance);
177int
178megasas_sync_map_info(struct megasas_instance *instance);
179int
229fe47c 180wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
181 int seconds);
9c915a8c 182void megasas_reset_reply_desc(struct megasas_instance *instance);
229fe47c 183int megasas_reset_fusion(struct Scsi_Host *shost, int iotimeout);
9c915a8c 184void megasas_fusion_ocr_wq(struct work_struct *work);
229fe47c 185static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
186 int initial);
187int megasas_check_mpio_paths(struct megasas_instance *instance,
188 struct scsi_cmnd *scmd);
cd50ba8e 189
190void
191megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
192{
193 instance->instancet->fire_cmd(instance,
194 cmd->frame_phys_addr, 0, instance->reg_set);
195}
7343eb65 196
c4a3e0a5
BS		 197/**
198 * megasas_get_cmd - Get a command from the free pool
199 * @instance: Adapter soft state
200 *
201 * Returns a free command from the pool
202 */
9c915a8c 203struct megasas_cmd *megasas_get_cmd(struct megasas_instance
c4a3e0a5
BS		 204 *instance)
205{
206 unsigned long flags;
207 struct megasas_cmd *cmd = NULL;
208
209 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
210
211 if (!list_empty(&instance->cmd_pool)) {
212 cmd = list_entry((&instance->cmd_pool)->next,
213 struct megasas_cmd, list);
214 list_del_init(&cmd->list);
215 } else {
216 printk(KERN_ERR "megasas: Command pool empty!\n");
217 }
218
219 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
220 return cmd;
221}
222
223/**
224 * megasas_return_cmd - Return a cmd to free command pool
225 * @instance: Adapter soft state
226 * @cmd: Command packet to be returned to free command pool
227 */
9c915a8c 228inline void
c4a3e0a5
BS		 229megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
230{
231 unsigned long flags;
232
233 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
234
235 cmd->scmd = NULL;
9c915a8c 236 cmd->frame_count = 0;
e5f93a36 237 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) &&
229fe47c 238 (instance->pdev->device != PCI_DEVICE_ID_LSI_PLASMA) &&
e5f93a36 239 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) &&
21d3c710 240 (instance->pdev->device != PCI_DEVICE_ID_LSI_FURY) &&
e5f93a36 241 (reset_devices))
242 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
c4a3e0a5
BS		 243 list_add_tail(&cmd->list, &instance->cmd_pool);
244
245 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
246}
247
1341c939
SP		 248
249/**
0d49016b 250* The following functions are defined for xscale
1341c939
SP		 251* (deviceid : 1064R, PERC5) controllers
252*/
253
c4a3e0a5 254/**
1341c939 255 * megasas_enable_intr_xscale - Enables interrupts
c4a3e0a5
BS		 256 * @regs: MFI register set
257 */
258static inline void
d46a3ad6 259megasas_enable_intr_xscale(struct megasas_instance *instance)
c4a3e0a5 260{
d46a3ad6
SS		 261 struct megasas_register_set __iomem *regs;
262 regs = instance->reg_set;
39a98554 263 writel(0, &(regs)->outbound_intr_mask);
c4a3e0a5
BS		 264
265 /* Dummy readl to force pci flush */
266 readl(&regs->outbound_intr_mask);
267}
268
b274cab7
SP		 269/**
270 * megasas_disable_intr_xscale -Disables interrupt
271 * @regs: MFI register set
272 */
273static inline void
d46a3ad6 274megasas_disable_intr_xscale(struct megasas_instance *instance)
b274cab7 275{
d46a3ad6 276 struct megasas_register_set __iomem *regs;
b274cab7 277 u32 mask = 0x1f;
d46a3ad6 278 regs = instance->reg_set;
b274cab7
SP		 279 writel(mask, &regs->outbound_intr_mask);
280 /* Dummy readl to force pci flush */
281 readl(&regs->outbound_intr_mask);
282}
283
1341c939
SP		 284/**
285 * megasas_read_fw_status_reg_xscale - returns the current FW status value
286 * @regs: MFI register set
287 */
288static u32
289megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs)
290{
291 return readl(&(regs)->outbound_msg_0);
292}
293/**
294 * megasas_clear_interrupt_xscale - Check & clear interrupt
295 * @regs: MFI register set
296 */
0d49016b 297static int
1341c939
SP		 298megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs)
299{
300 u32 status;
39a98554 301 u32 mfiStatus = 0;
1341c939
SP		 302 /*
303 * Check if it is our interrupt
304 */
305 status = readl(&regs->outbound_intr_status);
306
39a98554 307 if (status & MFI_OB_INTR_STATUS_MASK)
308 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
309 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
310 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
1341c939
SP		 311
312 /*
313 * Clear the interrupt by writing back the same value
314 */
39a98554 315 if (mfiStatus)
316 writel(status, &regs->outbound_intr_status);
1341c939 317
06f579de
YB		 318 /* Dummy readl to force pci flush */
319 readl(&regs->outbound_intr_status);
320
39a98554 321 return mfiStatus;
1341c939
SP		 322}
323
324/**
325 * megasas_fire_cmd_xscale - Sends command to the FW
326 * @frame_phys_addr : Physical address of cmd
327 * @frame_count : Number of frames for the command
328 * @regs : MFI register set
329 */
0d49016b 330static inline void
0c79e681
YB		 331megasas_fire_cmd_xscale(struct megasas_instance *instance,
332 dma_addr_t frame_phys_addr,
333 u32 frame_count,
334 struct megasas_register_set __iomem *regs)
1341c939 335{
39a98554 336 unsigned long flags;
337 spin_lock_irqsave(&instance->hba_lock, flags);
1341c939
SP		 338 writel((frame_phys_addr >> 3)|(frame_count),
339 &(regs)->inbound_queue_port);
39a98554 340 spin_unlock_irqrestore(&instance->hba_lock, flags);
341}
342
343/**
344 * megasas_adp_reset_xscale - For controller reset
345 * @regs: MFI register set
346 */
347static int
348megasas_adp_reset_xscale(struct megasas_instance *instance,
349 struct megasas_register_set __iomem *regs)
350{
351 u32 i;
352 u32 pcidata;
353 writel(MFI_ADP_RESET, &regs->inbound_doorbell);
354
355 for (i = 0; i < 3; i++)
356 msleep(1000); /* sleep for 3 secs */
357 pcidata = 0;
358 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
359 printk(KERN_NOTICE "pcidata = %x\n", pcidata);
360 if (pcidata & 0x2) {
361 printk(KERN_NOTICE "mfi 1068 offset read=%x\n", pcidata);
362 pcidata &= ~0x2;
363 pci_write_config_dword(instance->pdev,
364 MFI_1068_PCSR_OFFSET, pcidata);
365
366 for (i = 0; i < 2; i++)
367 msleep(1000); /* need to wait 2 secs again */
368
369 pcidata = 0;
370 pci_read_config_dword(instance->pdev,
371 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
372 printk(KERN_NOTICE "1068 offset handshake read=%x\n", pcidata);
373 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
374 printk(KERN_NOTICE "1068 offset pcidt=%x\n", pcidata);
375 pcidata = 0;
376 pci_write_config_dword(instance->pdev,
377 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
378 }
379 }
380 return 0;
381}
382
383/**
384 * megasas_check_reset_xscale - For controller reset check
385 * @regs: MFI register set
386 */
387static int
388megasas_check_reset_xscale(struct megasas_instance *instance,
389 struct megasas_register_set __iomem *regs)
390{
39a98554 391
392 if ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) &&
94cd65dd
SS		 393 (le32_to_cpu(*instance->consumer) ==
394 MEGASAS_ADPRESET_INPROG_SIGN))
39a98554 395 return 1;
39a98554 396 return 0;
1341c939
SP		 397}
398
399static struct megasas_instance_template megasas_instance_template_xscale = {
400
401 .fire_cmd = megasas_fire_cmd_xscale,
402 .enable_intr = megasas_enable_intr_xscale,
b274cab7 403 .disable_intr = megasas_disable_intr_xscale,
1341c939
SP		 404 .clear_intr = megasas_clear_intr_xscale,
405 .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
39a98554 406 .adp_reset = megasas_adp_reset_xscale,
407 .check_reset = megasas_check_reset_xscale,
cd50ba8e 408 .service_isr = megasas_isr,
409 .tasklet = megasas_complete_cmd_dpc,
410 .init_adapter = megasas_init_adapter_mfi,
411 .build_and_issue_cmd = megasas_build_and_issue_cmd,
412 .issue_dcmd = megasas_issue_dcmd,
1341c939
SP		 413};
414
415/**
0d49016b 416* This is the end of set of functions & definitions specific
1341c939
SP		 417* to xscale (deviceid : 1064R, PERC5) controllers
418*/
419
f9876f0b 420/**
0d49016b 421* The following functions are defined for ppc (deviceid : 0x60)
f9876f0b
SP		 422* controllers
423*/
424
425/**
426 * megasas_enable_intr_ppc - Enables interrupts
427 * @regs: MFI register set
428 */
429static inline void
d46a3ad6 430megasas_enable_intr_ppc(struct megasas_instance *instance)
f9876f0b 431{
d46a3ad6
SS		 432 struct megasas_register_set __iomem *regs;
433 regs = instance->reg_set;
f9876f0b 434 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
0d49016b 435
39a98554 436 writel(~0x80000000, &(regs)->outbound_intr_mask);
f9876f0b
SP		 437
438 /* Dummy readl to force pci flush */
439 readl(&regs->outbound_intr_mask);
440}
441
b274cab7
SP		 442/**
443 * megasas_disable_intr_ppc - Disable interrupt
444 * @regs: MFI register set
445 */
446static inline void
d46a3ad6 447megasas_disable_intr_ppc(struct megasas_instance *instance)
b274cab7 448{
d46a3ad6 449 struct megasas_register_set __iomem *regs;
b274cab7 450 u32 mask = 0xFFFFFFFF;
d46a3ad6 451 regs = instance->reg_set;
b274cab7
SP		 452 writel(mask, &regs->outbound_intr_mask);
453 /* Dummy readl to force pci flush */
454 readl(&regs->outbound_intr_mask);
455}
456
f9876f0b
SP		 457/**
458 * megasas_read_fw_status_reg_ppc - returns the current FW status value
459 * @regs: MFI register set
460 */
461static u32
462megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs)
463{
464 return readl(&(regs)->outbound_scratch_pad);
465}
466
467/**
468 * megasas_clear_interrupt_ppc - Check & clear interrupt
469 * @regs: MFI register set
470 */
0d49016b 471static int
f9876f0b
SP		 472megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs)
473{
3cc6851f 474 u32 status, mfiStatus = 0;
475
f9876f0b
SP		 476 /*
477 * Check if it is our interrupt
478 */
479 status = readl(&regs->outbound_intr_status);
480
3cc6851f 481 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
482 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
483
484 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
485 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
f9876f0b
SP		 486
487 /*
488 * Clear the interrupt by writing back the same value
489 */
490 writel(status, &regs->outbound_doorbell_clear);
491
06f579de
YB		 492 /* Dummy readl to force pci flush */
493 readl(&regs->outbound_doorbell_clear);
494
3cc6851f 495 return mfiStatus;
f9876f0b 496}
3cc6851f 497
f9876f0b
SP		 498/**
499 * megasas_fire_cmd_ppc - Sends command to the FW
500 * @frame_phys_addr : Physical address of cmd
501 * @frame_count : Number of frames for the command
502 * @regs : MFI register set
503 */
0d49016b 504static inline void
0c79e681
YB		 505megasas_fire_cmd_ppc(struct megasas_instance *instance,
506 dma_addr_t frame_phys_addr,
507 u32 frame_count,
508 struct megasas_register_set __iomem *regs)
f9876f0b 509{
39a98554 510 unsigned long flags;
511 spin_lock_irqsave(&instance->hba_lock, flags);
0d49016b 512 writel((frame_phys_addr | (frame_count<<1))|1,
f9876f0b 513 &(regs)->inbound_queue_port);
39a98554 514 spin_unlock_irqrestore(&instance->hba_lock, flags);
f9876f0b
SP		 515}
516
39a98554 517/**
518 * megasas_check_reset_ppc - For controller reset check
519 * @regs: MFI register set
520 */
521static int
522megasas_check_reset_ppc(struct megasas_instance *instance,
523 struct megasas_register_set __iomem *regs)
524{
3cc6851f 525 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL)
526 return 1;
527
39a98554 528 return 0;
529}
3cc6851f 530
f9876f0b 531static struct megasas_instance_template megasas_instance_template_ppc = {
0d49016b 532
f9876f0b
SP		 533 .fire_cmd = megasas_fire_cmd_ppc,
534 .enable_intr = megasas_enable_intr_ppc,
b274cab7 535 .disable_intr = megasas_disable_intr_ppc,
f9876f0b
SP		 536 .clear_intr = megasas_clear_intr_ppc,
537 .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
3cc6851f 538 .adp_reset = megasas_adp_reset_xscale,
39a98554 539 .check_reset = megasas_check_reset_ppc,
cd50ba8e 540 .service_isr = megasas_isr,
541 .tasklet = megasas_complete_cmd_dpc,
542 .init_adapter = megasas_init_adapter_mfi,
543 .build_and_issue_cmd = megasas_build_and_issue_cmd,
544 .issue_dcmd = megasas_issue_dcmd,
f9876f0b
SP		 545};
546
87911122
YB		 547/**
548 * megasas_enable_intr_skinny - Enables interrupts
549 * @regs: MFI register set
550 */
551static inline void
d46a3ad6 552megasas_enable_intr_skinny(struct megasas_instance *instance)
87911122 553{
d46a3ad6
SS		 554 struct megasas_register_set __iomem *regs;
555 regs = instance->reg_set;
87911122
YB		 556 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
557
558 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
559
560 /* Dummy readl to force pci flush */
561 readl(&regs->outbound_intr_mask);
562}
563
564/**
565 * megasas_disable_intr_skinny - Disables interrupt
566 * @regs: MFI register set
567 */
568static inline void
d46a3ad6 569megasas_disable_intr_skinny(struct megasas_instance *instance)
87911122 570{
d46a3ad6 571 struct megasas_register_set __iomem *regs;
87911122 572 u32 mask = 0xFFFFFFFF;
d46a3ad6 573 regs = instance->reg_set;
87911122
YB		 574 writel(mask, &regs->outbound_intr_mask);
575 /* Dummy readl to force pci flush */
576 readl(&regs->outbound_intr_mask);
577}
578
579/**
580 * megasas_read_fw_status_reg_skinny - returns the current FW status value
581 * @regs: MFI register set
582 */
583static u32
584megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs)
585{
586 return readl(&(regs)->outbound_scratch_pad);
587}
588
589/**
590 * megasas_clear_interrupt_skinny - Check & clear interrupt
591 * @regs: MFI register set
592 */
593static int
594megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs)
595{
596 u32 status;
ebf054b0 597 u32 mfiStatus = 0;
598
87911122
YB		 599 /*
600 * Check if it is our interrupt
601 */
602 status = readl(&regs->outbound_intr_status);
603
604 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
39a98554 605 return 0;
87911122
YB		 606 }
607
ebf054b0 608 /*
609 * Check if it is our interrupt
610 */
a3fda7dd 611 if ((megasas_read_fw_status_reg_skinny(regs) & MFI_STATE_MASK) ==
ebf054b0 612 MFI_STATE_FAULT) {
613 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
614 } else
615 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
616
87911122
YB		 617 /*
618 * Clear the interrupt by writing back the same value
619 */
620 writel(status, &regs->outbound_intr_status);
621
622 /*
623 * dummy read to flush PCI
624 */
625 readl(&regs->outbound_intr_status);
626
ebf054b0 627 return mfiStatus;
87911122
YB		 628}
629
630/**
631 * megasas_fire_cmd_skinny - Sends command to the FW
632 * @frame_phys_addr : Physical address of cmd
633 * @frame_count : Number of frames for the command
634 * @regs : MFI register set
635 */
636static inline void
0c79e681
YB		 637megasas_fire_cmd_skinny(struct megasas_instance *instance,
638 dma_addr_t frame_phys_addr,
639 u32 frame_count,
87911122
YB		 640 struct megasas_register_set __iomem *regs)
641{
0c79e681 642 unsigned long flags;
39a98554 643 spin_lock_irqsave(&instance->hba_lock, flags);
94cd65dd
SS		 644 writel(upper_32_bits(frame_phys_addr),
645 &(regs)->inbound_high_queue_port);
646 writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
647 &(regs)->inbound_low_queue_port);
39a98554 648 spin_unlock_irqrestore(&instance->hba_lock, flags);
649}
650
39a98554 651/**
652 * megasas_check_reset_skinny - For controller reset check
653 * @regs: MFI register set
654 */
655static int
656megasas_check_reset_skinny(struct megasas_instance *instance,
657 struct megasas_register_set __iomem *regs)
658{
3cc6851f 659 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL)
660 return 1;
661
39a98554 662 return 0;
87911122
YB		 663}
664
665static struct megasas_instance_template megasas_instance_template_skinny = {
666
667 .fire_cmd = megasas_fire_cmd_skinny,
668 .enable_intr = megasas_enable_intr_skinny,
669 .disable_intr = megasas_disable_intr_skinny,
670 .clear_intr = megasas_clear_intr_skinny,
671 .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
ebf054b0 672 .adp_reset = megasas_adp_reset_gen2,
39a98554 673 .check_reset = megasas_check_reset_skinny,
cd50ba8e 674 .service_isr = megasas_isr,
675 .tasklet = megasas_complete_cmd_dpc,
676 .init_adapter = megasas_init_adapter_mfi,
677 .build_and_issue_cmd = megasas_build_and_issue_cmd,
678 .issue_dcmd = megasas_issue_dcmd,
87911122
YB		 679};
680
681
6610a6b3
YB		 682/**
683* The following functions are defined for gen2 (deviceid : 0x78 0x79)
684* controllers
685*/
686
687/**
688 * megasas_enable_intr_gen2 - Enables interrupts
689 * @regs: MFI register set
690 */
691static inline void
d46a3ad6 692megasas_enable_intr_gen2(struct megasas_instance *instance)
6610a6b3 693{
d46a3ad6
SS		 694 struct megasas_register_set __iomem *regs;
695 regs = instance->reg_set;
6610a6b3
YB		 696 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
697
698 /* write ~0x00000005 (4 & 1) to the intr mask*/
699 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
700
701 /* Dummy readl to force pci flush */
702 readl(&regs->outbound_intr_mask);
703}
704
705/**
706 * megasas_disable_intr_gen2 - Disables interrupt
707 * @regs: MFI register set
708 */
709static inline void
d46a3ad6 710megasas_disable_intr_gen2(struct megasas_instance *instance)
6610a6b3 711{
d46a3ad6 712 struct megasas_register_set __iomem *regs;
6610a6b3 713 u32 mask = 0xFFFFFFFF;
d46a3ad6 714 regs = instance->reg_set;
6610a6b3
YB		 715 writel(mask, &regs->outbound_intr_mask);
716 /* Dummy readl to force pci flush */
717 readl(&regs->outbound_intr_mask);
718}
719
720/**
721 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
722 * @regs: MFI register set
723 */
724static u32
725megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs)
726{
727 return readl(&(regs)->outbound_scratch_pad);
728}
729
730/**
731 * megasas_clear_interrupt_gen2 - Check & clear interrupt
732 * @regs: MFI register set
733 */
734static int
735megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs)
736{
737 u32 status;
39a98554 738 u32 mfiStatus = 0;
6610a6b3
YB		 739 /*
740 * Check if it is our interrupt
741 */
742 status = readl(&regs->outbound_intr_status);
743
b5bccadd 744 if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
39a98554 745 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
746 }
747 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
748 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
749 }
6610a6b3
YB		 750
751 /*
752 * Clear the interrupt by writing back the same value
753 */
39a98554 754 if (mfiStatus)
755 writel(status, &regs->outbound_doorbell_clear);
6610a6b3
YB		 756
757 /* Dummy readl to force pci flush */
758 readl(&regs->outbound_intr_status);
759
39a98554 760 return mfiStatus;
6610a6b3
YB		 761}
762/**
763 * megasas_fire_cmd_gen2 - Sends command to the FW
764 * @frame_phys_addr : Physical address of cmd
765 * @frame_count : Number of frames for the command
766 * @regs : MFI register set
767 */
768static inline void
0c79e681
YB		 769megasas_fire_cmd_gen2(struct megasas_instance *instance,
770 dma_addr_t frame_phys_addr,
771 u32 frame_count,
6610a6b3
YB		 772 struct megasas_register_set __iomem *regs)
773{
39a98554 774 unsigned long flags;
775 spin_lock_irqsave(&instance->hba_lock, flags);
6610a6b3
YB		 776 writel((frame_phys_addr | (frame_count<<1))|1,
777 &(regs)->inbound_queue_port);
39a98554 778 spin_unlock_irqrestore(&instance->hba_lock, flags);
779}
780
781/**
782 * megasas_adp_reset_gen2 - For controller reset
783 * @regs: MFI register set
784 */
785static int
786megasas_adp_reset_gen2(struct megasas_instance *instance,
787 struct megasas_register_set __iomem *reg_set)
788{
789 u32 retry = 0 ;
790 u32 HostDiag;
ebf054b0 791 u32 *seq_offset = &reg_set->seq_offset;
792 u32 *hostdiag_offset = &reg_set->host_diag;
793
794 if (instance->instancet == &megasas_instance_template_skinny) {
795 seq_offset = &reg_set->fusion_seq_offset;
796 hostdiag_offset = &reg_set->fusion_host_diag;
797 }
798
799 writel(0, seq_offset);
800 writel(4, seq_offset);
801 writel(0xb, seq_offset);
802 writel(2, seq_offset);
803 writel(7, seq_offset);
804 writel(0xd, seq_offset);
39a98554 805
39a98554 806 msleep(1000);
807
ebf054b0 808 HostDiag = (u32)readl(hostdiag_offset);
39a98554 809
810 while ( !( HostDiag & DIAG_WRITE_ENABLE) ) {
811 msleep(100);
ebf054b0 812 HostDiag = (u32)readl(hostdiag_offset);
39a98554 813 printk(KERN_NOTICE "RESETGEN2: retry=%x, hostdiag=%x\n",
814 retry, HostDiag);
815
816 if (retry++ >= 100)
817 return 1;
818
819 }
820
821 printk(KERN_NOTICE "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
822
ebf054b0 823 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
39a98554 824
825 ssleep(10);
826
ebf054b0 827 HostDiag = (u32)readl(hostdiag_offset);
39a98554 828 while ( ( HostDiag & DIAG_RESET_ADAPTER) ) {
829 msleep(100);
ebf054b0 830 HostDiag = (u32)readl(hostdiag_offset);
39a98554 831 printk(KERN_NOTICE "RESET_GEN2: retry=%x, hostdiag=%x\n",
832 retry, HostDiag);
833
834 if (retry++ >= 1000)
835 return 1;
836
837 }
838 return 0;
839}
840
841/**
842 * megasas_check_reset_gen2 - For controller reset check
843 * @regs: MFI register set
844 */
845static int
846megasas_check_reset_gen2(struct megasas_instance *instance,
847 struct megasas_register_set __iomem *regs)
848{
707e09bd
YB		 849 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
850 return 1;
851 }
852
39a98554 853 return 0;
6610a6b3
YB		 854}
855
856static struct megasas_instance_template megasas_instance_template_gen2 = {
857
858 .fire_cmd = megasas_fire_cmd_gen2,
859 .enable_intr = megasas_enable_intr_gen2,
860 .disable_intr = megasas_disable_intr_gen2,
861 .clear_intr = megasas_clear_intr_gen2,
862 .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
39a98554 863 .adp_reset = megasas_adp_reset_gen2,
864 .check_reset = megasas_check_reset_gen2,
cd50ba8e 865 .service_isr = megasas_isr,
866 .tasklet = megasas_complete_cmd_dpc,
867 .init_adapter = megasas_init_adapter_mfi,
868 .build_and_issue_cmd = megasas_build_and_issue_cmd,
869 .issue_dcmd = megasas_issue_dcmd,
6610a6b3
YB		 870};
871
f9876f0b
SP		 872/**
873* This is the end of set of functions & definitions
39a98554 874* specific to gen2 (deviceid : 0x78, 0x79) controllers
f9876f0b
SP		 875*/
876
9c915a8c 877/*
878 * Template added for TB (Fusion)
879 */
880extern struct megasas_instance_template megasas_instance_template_fusion;
881
c4a3e0a5
BS		 882/**
883 * megasas_issue_polled - Issues a polling command
884 * @instance: Adapter soft state
0d49016b 885 * @cmd: Command packet to be issued
c4a3e0a5
BS		 886 *
887 * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
888 */
9c915a8c 889int
c4a3e0a5
BS		 890megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
891{
229fe47c 892 int seconds;
c4a3e0a5
BS		 893
894 struct megasas_header *frame_hdr = &cmd->frame->hdr;
895
94cd65dd
SS		 896 frame_hdr->cmd_status = MFI_CMD_STATUS_POLL_MODE;
897 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
c4a3e0a5
BS		 898
899 /*
900 * Issue the frame using inbound queue port
901 */
9c915a8c 902 instance->instancet->issue_dcmd(instance, cmd);
c4a3e0a5
BS		 903
904 /*
905 * Wait for cmd_status to change
906 */
229fe47c 907 if (instance->requestorId)
908 seconds = MEGASAS_ROUTINE_WAIT_TIME_VF;
909 else
910 seconds = MFI_POLL_TIMEOUT_SECS;
911 return wait_and_poll(instance, cmd, seconds);
c4a3e0a5
BS		 912}
913
914/**
915 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds
916 * @instance: Adapter soft state
917 * @cmd: Command to be issued
cfbe7554 918 * @timeout: Timeout in seconds
c4a3e0a5
BS		 919 *
920 * This function waits on an event for the command to be returned from ISR.
2a3681e5 921 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
c4a3e0a5
BS		 922 * Used to issue ioctl commands.
923 */
924static int
925megasas_issue_blocked_cmd(struct megasas_instance *instance,
cfbe7554 926 struct megasas_cmd *cmd, int timeout)
c4a3e0a5 927{
cfbe7554 928 int ret = 0;
c4a3e0a5
BS		 929 cmd->cmd_status = ENODATA;
930
9c915a8c 931 instance->instancet->issue_dcmd(instance, cmd);
cfbe7554
SS		 932 if (timeout) {
933 ret = wait_event_timeout(instance->int_cmd_wait_q,
934 cmd->cmd_status != ENODATA, timeout * HZ);
935 if (!ret)
936 return 1;
937 } else
938 wait_event(instance->int_cmd_wait_q,
939 cmd->cmd_status != ENODATA);
c4a3e0a5
BS		 940
941 return 0;
942}
943
944/**
945 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd
946 * @instance: Adapter soft state
947 * @cmd_to_abort: Previously issued cmd to be aborted
cfbe7554 948 * @timeout: Timeout in seconds
c4a3e0a5 949 *
cfbe7554 950 * MFI firmware can abort previously issued AEN comamnd (automatic event
c4a3e0a5 951 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
2a3681e5
SP		 952 * cmd and waits for return status.
953 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
c4a3e0a5
BS		 954 */
955static int
956megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
cfbe7554 957 struct megasas_cmd *cmd_to_abort, int timeout)
c4a3e0a5
BS		 958{
959 struct megasas_cmd *cmd;
960 struct megasas_abort_frame *abort_fr;
cfbe7554 961 int ret = 0;
c4a3e0a5
BS		 962
963 cmd = megasas_get_cmd(instance);
964
965 if (!cmd)
966 return -1;
967
968 abort_fr = &cmd->frame->abort;
969
970 /*
971 * Prepare and issue the abort frame
972 */
973 abort_fr->cmd = MFI_CMD_ABORT;
974 abort_fr->cmd_status = 0xFF;
94cd65dd
SS		 975 abort_fr->flags = cpu_to_le16(0);
976 abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
977 abort_fr->abort_mfi_phys_addr_lo =
978 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
979 abort_fr->abort_mfi_phys_addr_hi =
980 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
c4a3e0a5
BS		 981
982 cmd->sync_cmd = 1;
983 cmd->cmd_status = 0xFF;
984
9c915a8c 985 instance->instancet->issue_dcmd(instance, cmd);
c4a3e0a5 986
cfbe7554
SS		 987 if (timeout) {
988 ret = wait_event_timeout(instance->abort_cmd_wait_q,
989 cmd->cmd_status != ENODATA, timeout * HZ);
990 if (!ret) {
991 dev_err(&instance->pdev->dev, "Command timedout"
992 "from %s\n", __func__);
993 return 1;
994 }
995 } else
996 wait_event(instance->abort_cmd_wait_q,
997 cmd->cmd_status != ENODATA);
998
39a98554 999 cmd->sync_cmd = 0;
c4a3e0a5
BS		 1000
1001 megasas_return_cmd(instance, cmd);
1002 return 0;
1003}
1004
1005/**
1006 * megasas_make_sgl32 - Prepares 32-bit SGL
1007 * @instance: Adapter soft state
1008 * @scp: SCSI command from the mid-layer
1009 * @mfi_sgl: SGL to be filled in
1010 *
1011 * If successful, this function returns the number of SG elements. Otherwise,
1012 * it returnes -1.
1013 */
858119e1 1014static int
c4a3e0a5
BS		 1015megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
1016 union megasas_sgl *mfi_sgl)
1017{
1018 int i;
1019 int sge_count;
1020 struct scatterlist *os_sgl;
1021
155d98f0
FT		 1022 sge_count = scsi_dma_map(scp);
1023 BUG_ON(sge_count < 0);
c4a3e0a5 1024
155d98f0
FT		 1025 if (sge_count) {
1026 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
94cd65dd
SS		 1027 mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1028 mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
155d98f0 1029 }
c4a3e0a5 1030 }
c4a3e0a5
BS		 1031 return sge_count;
1032}
1033
1034/**
1035 * megasas_make_sgl64 - Prepares 64-bit SGL
1036 * @instance: Adapter soft state
1037 * @scp: SCSI command from the mid-layer
1038 * @mfi_sgl: SGL to be filled in
1039 *
1040 * If successful, this function returns the number of SG elements. Otherwise,
1041 * it returnes -1.
1042 */
858119e1 1043static int
c4a3e0a5
BS		 1044megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1045 union megasas_sgl *mfi_sgl)
1046{
1047 int i;
1048 int sge_count;
1049 struct scatterlist *os_sgl;
1050
155d98f0
FT		 1051 sge_count = scsi_dma_map(scp);
1052 BUG_ON(sge_count < 0);
c4a3e0a5 1053
155d98f0
FT		 1054 if (sge_count) {
1055 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
94cd65dd
SS		 1056 mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1057 mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
155d98f0 1058 }
c4a3e0a5 1059 }
c4a3e0a5
BS		 1060 return sge_count;
1061}
1062
f4c9a131
YB		 1063/**
1064 * megasas_make_sgl_skinny - Prepares IEEE SGL
1065 * @instance: Adapter soft state
1066 * @scp: SCSI command from the mid-layer
1067 * @mfi_sgl: SGL to be filled in
1068 *
1069 * If successful, this function returns the number of SG elements. Otherwise,
1070 * it returnes -1.
1071 */
1072static int
1073megasas_make_sgl_skinny(struct megasas_instance *instance,
1074 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1075{
1076 int i;
1077 int sge_count;
1078 struct scatterlist *os_sgl;
1079
1080 sge_count = scsi_dma_map(scp);
1081
1082 if (sge_count) {
1083 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
94cd65dd
SS		 1084 mfi_sgl->sge_skinny[i].length =
1085 cpu_to_le32(sg_dma_len(os_sgl));
f4c9a131 1086 mfi_sgl->sge_skinny[i].phys_addr =
94cd65dd
SS		 1087 cpu_to_le64(sg_dma_address(os_sgl));
1088 mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
f4c9a131
YB		 1089 }
1090 }
1091 return sge_count;
1092}
1093
b1df99d9
SP		 1094 /**
1095 * megasas_get_frame_count - Computes the number of frames
d532dbe2 1096 * @frame_type : type of frame- io or pthru frame
b1df99d9
SP		 1097 * @sge_count : number of sg elements
1098 *
1099 * Returns the number of frames required for numnber of sge's (sge_count)
1100 */
1101
f4c9a131
YB		 1102static u32 megasas_get_frame_count(struct megasas_instance *instance,
1103 u8 sge_count, u8 frame_type)
b1df99d9
SP		 1104{
1105 int num_cnt;
1106 int sge_bytes;
1107 u32 sge_sz;
1108 u32 frame_count=0;
1109
1110 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1111 sizeof(struct megasas_sge32);
1112
f4c9a131
YB		 1113 if (instance->flag_ieee) {
1114 sge_sz = sizeof(struct megasas_sge_skinny);
1115 }
1116
b1df99d9 1117 /*
d532dbe2 1118 * Main frame can contain 2 SGEs for 64-bit SGLs and
1119 * 3 SGEs for 32-bit SGLs for ldio &
1120 * 1 SGEs for 64-bit SGLs and
1121 * 2 SGEs for 32-bit SGLs for pthru frame
1122 */
1123 if (unlikely(frame_type == PTHRU_FRAME)) {
f4c9a131
YB		 1124 if (instance->flag_ieee == 1) {
1125 num_cnt = sge_count - 1;
1126 } else if (IS_DMA64)
d532dbe2 1127 num_cnt = sge_count - 1;
1128 else
1129 num_cnt = sge_count - 2;
1130 } else {
f4c9a131
YB		 1131 if (instance->flag_ieee == 1) {
1132 num_cnt = sge_count - 1;
1133 } else if (IS_DMA64)
d532dbe2 1134 num_cnt = sge_count - 2;
1135 else
1136 num_cnt = sge_count - 3;
1137 }
b1df99d9
SP		 1138
1139 if(num_cnt>0){
1140 sge_bytes = sge_sz * num_cnt;
1141
1142 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1143 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1144 }
1145 /* Main frame */
1146 frame_count +=1;
1147
1148 if (frame_count > 7)
1149 frame_count = 8;
1150 return frame_count;
1151}
1152
c4a3e0a5
BS		 1153/**
1154 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1155 * @instance: Adapter soft state
1156 * @scp: SCSI command
1157 * @cmd: Command to be prepared in
1158 *
1159 * This function prepares CDB commands. These are typcially pass-through
1160 * commands to the devices.
1161 */
858119e1 1162static int
c4a3e0a5
BS		 1163megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1164 struct megasas_cmd *cmd)
1165{
c4a3e0a5
BS		 1166 u32 is_logical;
1167 u32 device_id;
1168 u16 flags = 0;
1169 struct megasas_pthru_frame *pthru;
1170
1171 is_logical = MEGASAS_IS_LOGICAL(scp);
1172 device_id = MEGASAS_DEV_INDEX(instance, scp);
1173 pthru = (struct megasas_pthru_frame *)cmd->frame;
1174
1175 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1176 flags = MFI_FRAME_DIR_WRITE;
1177 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1178 flags = MFI_FRAME_DIR_READ;
1179 else if (scp->sc_data_direction == PCI_DMA_NONE)
1180 flags = MFI_FRAME_DIR_NONE;
1181
f4c9a131
YB		 1182 if (instance->flag_ieee == 1) {
1183 flags |= MFI_FRAME_IEEE;
1184 }
1185
c4a3e0a5
BS		 1186 /*
1187 * Prepare the DCDB frame
1188 */
1189 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1190 pthru->cmd_status = 0x0;
1191 pthru->scsi_status = 0x0;
1192 pthru->target_id = device_id;
1193 pthru->lun = scp->device->lun;
1194 pthru->cdb_len = scp->cmd_len;
1195 pthru->timeout = 0;
780a3762 1196 pthru->pad_0 = 0;
94cd65dd
SS		 1197 pthru->flags = cpu_to_le16(flags);
1198 pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
c4a3e0a5
BS		 1199
1200 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1201
8d568253
YB		 1202 /*
1203 * If the command is for the tape device, set the
1204 * pthru timeout to the os layer timeout value.
1205 */
1206 if (scp->device->type == TYPE_TAPE) {
1207 if ((scp->request->timeout / HZ) > 0xFFFF)
1208 pthru->timeout = 0xFFFF;
1209 else
94cd65dd 1210 pthru->timeout = cpu_to_le16(scp->request->timeout / HZ);
8d568253
YB		 1211 }
1212
c4a3e0a5
BS		 1213 /*
1214 * Construct SGL
1215 */
f4c9a131 1216 if (instance->flag_ieee == 1) {
94cd65dd 1217 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
f4c9a131
YB		 1218 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1219 &pthru->sgl);
1220 } else if (IS_DMA64) {
94cd65dd 1221 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
c4a3e0a5
BS		 1222 pthru->sge_count = megasas_make_sgl64(instance, scp,
1223 &pthru->sgl);
1224 } else
1225 pthru->sge_count = megasas_make_sgl32(instance, scp,
1226 &pthru->sgl);
1227
bdc6fb8d
YB		 1228 if (pthru->sge_count > instance->max_num_sge) {
1229 printk(KERN_ERR "megasas: DCDB two many SGE NUM=%x\n",
1230 pthru->sge_count);
1231 return 0;
1232 }
1233
c4a3e0a5
BS		 1234 /*
1235 * Sense info specific
1236 */
1237 pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
94cd65dd
SS		 1238 pthru->sense_buf_phys_addr_hi =
1239 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1240 pthru->sense_buf_phys_addr_lo =
1241 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
c4a3e0a5 1242
c4a3e0a5
BS		 1243 /*
1244 * Compute the total number of frames this command consumes. FW uses
1245 * this number to pull sufficient number of frames from host memory.
1246 */
f4c9a131 1247 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
d532dbe2 1248 PTHRU_FRAME);
c4a3e0a5
BS		 1249
1250 return cmd->frame_count;
1251}
1252
1253/**
1254 * megasas_build_ldio - Prepares IOs to logical devices
1255 * @instance: Adapter soft state
1256 * @scp: SCSI command
fd589a8f 1257 * @cmd: Command to be prepared
c4a3e0a5
BS		 1258 *
1259 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1260 */
858119e1 1261static int
c4a3e0a5
BS		 1262megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1263 struct megasas_cmd *cmd)
1264{
c4a3e0a5
BS		 1265 u32 device_id;
1266 u8 sc = scp->cmnd[0];
1267 u16 flags = 0;
1268 struct megasas_io_frame *ldio;
1269
1270 device_id = MEGASAS_DEV_INDEX(instance, scp);
1271 ldio = (struct megasas_io_frame *)cmd->frame;
1272
1273 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1274 flags = MFI_FRAME_DIR_WRITE;
1275 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1276 flags = MFI_FRAME_DIR_READ;
1277
f4c9a131
YB		 1278 if (instance->flag_ieee == 1) {
1279 flags |= MFI_FRAME_IEEE;
1280 }
1281
c4a3e0a5 1282 /*
b1df99d9 1283 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
c4a3e0a5
BS		 1284 */
1285 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1286 ldio->cmd_status = 0x0;
1287 ldio->scsi_status = 0x0;
1288 ldio->target_id = device_id;
1289 ldio->timeout = 0;
1290 ldio->reserved_0 = 0;
1291 ldio->pad_0 = 0;
94cd65dd 1292 ldio->flags = cpu_to_le16(flags);
c4a3e0a5
BS		 1293 ldio->start_lba_hi = 0;
1294 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1295
1296 /*
1297 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1298 */
1299 if (scp->cmd_len == 6) {
94cd65dd
SS		 1300 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1301 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1302 ((u32) scp->cmnd[2] << 8) |
1303 (u32) scp->cmnd[3]);
c4a3e0a5 1304
94cd65dd 1305 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
c4a3e0a5
BS		 1306 }
1307
1308 /*
1309 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1310 */
1311 else if (scp->cmd_len == 10) {
94cd65dd
SS		 1312 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1313 ((u32) scp->cmnd[7] << 8));
1314 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1315 ((u32) scp->cmnd[3] << 16) |
1316 ((u32) scp->cmnd[4] << 8) |
1317 (u32) scp->cmnd[5]);
c4a3e0a5
BS		 1318 }
1319
1320 /*
1321 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1322 */
1323 else if (scp->cmd_len == 12) {
94cd65dd
SS		 1324 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1325 ((u32) scp->cmnd[7] << 16) |
1326 ((u32) scp->cmnd[8] << 8) |
1327 (u32) scp->cmnd[9]);
c4a3e0a5 1328
94cd65dd
SS		 1329 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1330 ((u32) scp->cmnd[3] << 16) |
1331 ((u32) scp->cmnd[4] << 8) |
1332 (u32) scp->cmnd[5]);
c4a3e0a5
BS		 1333 }
1334
1335 /*
1336 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1337 */
1338 else if (scp->cmd_len == 16) {
94cd65dd
SS		 1339 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1340 ((u32) scp->cmnd[11] << 16) |
1341 ((u32) scp->cmnd[12] << 8) |
1342 (u32) scp->cmnd[13]);
c4a3e0a5 1343
94cd65dd
SS		 1344 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1345 ((u32) scp->cmnd[7] << 16) |
1346 ((u32) scp->cmnd[8] << 8) |
1347 (u32) scp->cmnd[9]);
c4a3e0a5 1348
94cd65dd
SS		 1349 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1350 ((u32) scp->cmnd[3] << 16) |
1351 ((u32) scp->cmnd[4] << 8) |
1352 (u32) scp->cmnd[5]);
c4a3e0a5
BS		 1353
1354 }
1355
1356 /*
1357 * Construct SGL
1358 */
f4c9a131 1359 if (instance->flag_ieee) {
94cd65dd 1360 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
f4c9a131
YB		 1361 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1362 &ldio->sgl);
1363 } else if (IS_DMA64) {
94cd65dd 1364 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
c4a3e0a5
BS		 1365 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1366 } else
1367 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1368
bdc6fb8d
YB		 1369 if (ldio->sge_count > instance->max_num_sge) {
1370 printk(KERN_ERR "megasas: build_ld_io: sge_count = %x\n",
1371 ldio->sge_count);
1372 return 0;
1373 }
1374
c4a3e0a5
BS		 1375 /*
1376 * Sense info specific
1377 */
1378 ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1379 ldio->sense_buf_phys_addr_hi = 0;
94cd65dd 1380 ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
c4a3e0a5 1381
b1df99d9
SP		 1382 /*
1383 * Compute the total number of frames this command consumes. FW uses
1384 * this number to pull sufficient number of frames from host memory.
1385 */
f4c9a131
YB		 1386 cmd->frame_count = megasas_get_frame_count(instance,
1387 ldio->sge_count, IO_FRAME);
c4a3e0a5
BS		 1388
1389 return cmd->frame_count;
1390}
1391
1392/**
cb59aa6a
SP		 1393 * megasas_is_ldio - Checks if the cmd is for logical drive
1394 * @scmd: SCSI command
0d49016b 1395 *
cb59aa6a 1396 * Called by megasas_queue_command to find out if the command to be queued
0d49016b 1397 * is a logical drive command
c4a3e0a5 1398 */
9c915a8c 1399inline int megasas_is_ldio(struct scsi_cmnd *cmd)
c4a3e0a5 1400{
cb59aa6a
SP		 1401 if (!MEGASAS_IS_LOGICAL(cmd))
1402 return 0;
1403 switch (cmd->cmnd[0]) {
1404 case READ_10:
1405 case WRITE_10:
1406 case READ_12:
1407 case WRITE_12:
1408 case READ_6:
1409 case WRITE_6:
1410 case READ_16:
1411 case WRITE_16:
1412 return 1;
1413 default:
1414 return 0;
c4a3e0a5 1415 }
c4a3e0a5
BS		 1416}
1417
658dcedb
SP		 1418 /**
1419 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
1420 * in FW
1421 * @instance: Adapter soft state
1422 */
1423static inline void
1424megasas_dump_pending_frames(struct megasas_instance *instance)
1425{
1426 struct megasas_cmd *cmd;
1427 int i,n;
1428 union megasas_sgl *mfi_sgl;
1429 struct megasas_io_frame *ldio;
1430 struct megasas_pthru_frame *pthru;
1431 u32 sgcount;
1432 u32 max_cmd = instance->max_fw_cmds;
1433
1434 printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1435 printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1436 if (IS_DMA64)
1437 printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1438 else
1439 printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1440
1441 printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1442 for (i = 0; i < max_cmd; i++) {
1443 cmd = instance->cmd_list[i];
1444 if(!cmd->scmd)
1445 continue;
1446 printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1447 if (megasas_is_ldio(cmd->scmd)){
1448 ldio = (struct megasas_io_frame *)cmd->frame;
1449 mfi_sgl = &ldio->sgl;
1450 sgcount = ldio->sge_count;
94cd65dd
SS		 1451 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1452 " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1453 instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1454 le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1455 le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
658dcedb
SP		 1456 }
1457 else {
1458 pthru = (struct megasas_pthru_frame *) cmd->frame;
1459 mfi_sgl = &pthru->sgl;
1460 sgcount = pthru->sge_count;
94cd65dd
SS		 1461 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1462 "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1463 instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1464 pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1465 le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
658dcedb
SP		 1466 }
1467 if(megasas_dbg_lvl & MEGASAS_DBG_LVL){
1468 for (n = 0; n < sgcount; n++){
1469 if (IS_DMA64)
94cd65dd
SS		 1470 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%llx ",
1471 le32_to_cpu(mfi_sgl->sge64[n].length),
1472 le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
658dcedb 1473 else
94cd65dd
SS		 1474 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ",
1475 le32_to_cpu(mfi_sgl->sge32[n].length),
1476 le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
658dcedb
SP		 1477 }
1478 }
1479 printk(KERN_ERR "\n");
1480 } /*for max_cmd*/
1481 printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1482 for (i = 0; i < max_cmd; i++) {
1483
1484 cmd = instance->cmd_list[i];
1485
1486 if(cmd->sync_cmd == 1){
1487 printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1488 }
1489 }
1490 printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no);
1491}
1492
cd50ba8e 1493u32
1494megasas_build_and_issue_cmd(struct megasas_instance *instance,
1495 struct scsi_cmnd *scmd)
1496{
1497 struct megasas_cmd *cmd;
1498 u32 frame_count;
1499
1500 cmd = megasas_get_cmd(instance);
1501 if (!cmd)
1502 return SCSI_MLQUEUE_HOST_BUSY;
1503
1504 /*
1505 * Logical drive command
1506 */
1507 if (megasas_is_ldio(scmd))
1508 frame_count = megasas_build_ldio(instance, scmd, cmd);
1509 else
1510 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1511
1512 if (!frame_count)
1513 goto out_return_cmd;
1514
1515 cmd->scmd = scmd;
1516 scmd->SCp.ptr = (char *)cmd;
1517
1518 /*
1519 * Issue the command to the FW
1520 */
1521 atomic_inc(&instance->fw_outstanding);
1522
1523 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1524 cmd->frame_count-1, instance->reg_set);
cd50ba8e 1525
1526 return 0;
1527out_return_cmd:
1528 megasas_return_cmd(instance, cmd);
1529 return 1;
1530}
1531
1532
c4a3e0a5
BS		 1533/**
1534 * megasas_queue_command - Queue entry point
1535 * @scmd: SCSI command to be queued
1536 * @done: Callback entry point
1537 */
1538static int
f281233d 1539megasas_queue_command_lck(struct scsi_cmnd *scmd, void (*done) (struct scsi_cmnd *))
c4a3e0a5 1540{
c4a3e0a5 1541 struct megasas_instance *instance;
39a98554 1542 unsigned long flags;
c4a3e0a5
BS		 1543
1544 instance = (struct megasas_instance *)
1545 scmd->device->host->hostdata;
af37acfb 1546
39a98554 1547 if (instance->issuepend_done == 0)
af37acfb
SP		 1548 return SCSI_MLQUEUE_HOST_BUSY;
1549
39a98554 1550 spin_lock_irqsave(&instance->hba_lock, flags);
b09e66da 1551
229fe47c 1552 /* Check for an mpio path and adjust behavior */
1553 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) {
1554 if (megasas_check_mpio_paths(instance, scmd) ==
1555 (DID_RESET << 16)) {
1556 spin_unlock_irqrestore(&instance->hba_lock, flags);
1557 return SCSI_MLQUEUE_HOST_BUSY;
1558 } else {
1559 spin_unlock_irqrestore(&instance->hba_lock, flags);
1560 scmd->result = DID_NO_CONNECT << 16;
1561 done(scmd);
1562 return 0;
1563 }
1564 }
1565
b09e66da
SS		 1566 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
1567 spin_unlock_irqrestore(&instance->hba_lock, flags);
229fe47c 1568 scmd->result = DID_NO_CONNECT << 16;
b09e66da
SS		 1569 done(scmd);
1570 return 0;
1571 }
1572
39a98554 1573 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
1574 spin_unlock_irqrestore(&instance->hba_lock, flags);
1575 return SCSI_MLQUEUE_HOST_BUSY;
1576 }
1577
1578 spin_unlock_irqrestore(&instance->hba_lock, flags);
1579
c4a3e0a5
BS		 1580 scmd->scsi_done = done;
1581 scmd->result = 0;
1582
cb59aa6a
SP		 1583 if (MEGASAS_IS_LOGICAL(scmd) &&
1584 (scmd->device->id >= MEGASAS_MAX_LD || scmd->device->lun)) {
1585 scmd->result = DID_BAD_TARGET << 16;
1586 goto out_done;
c4a3e0a5
BS		 1587 }
1588
02b01e01
SP		 1589 switch (scmd->cmnd[0]) {
1590 case SYNCHRONIZE_CACHE:
1591 /*
1592 * FW takes care of flush cache on its own
1593 * No need to send it down
1594 */
1595 scmd->result = DID_OK << 16;
1596 goto out_done;
1597 default:
1598 break;
1599 }
1600
cd50ba8e 1601 if (instance->instancet->build_and_issue_cmd(instance, scmd)) {
1602 printk(KERN_ERR "megasas: Err returned from build_and_issue_cmd\n");
cb59aa6a 1603 return SCSI_MLQUEUE_HOST_BUSY;
cd50ba8e 1604 }
c4a3e0a5
BS		 1605
1606 return 0;
cb59aa6a 1607
cb59aa6a
SP		 1608 out_done:
1609 done(scmd);
1610 return 0;
c4a3e0a5
BS		 1611}
1612
f281233d
JG		 1613static DEF_SCSI_QCMD(megasas_queue_command)
1614
044833b5
YB		 1615static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1616{
1617 int i;
1618
1619 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1620
1621 if ((megasas_mgmt_info.instance[i]) &&
1622 (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1623 return megasas_mgmt_info.instance[i];
1624 }
1625
1626 return NULL;
1627}
1628
147aab6a
CH		 1629static int megasas_slave_configure(struct scsi_device *sdev)
1630{
044833b5
YB		 1631 u16 pd_index = 0;
1632 struct megasas_instance *instance ;
1633
1634 instance = megasas_lookup_instance(sdev->host->host_no);
1635
147aab6a 1636 /*
044833b5
YB		 1637 * Don't export physical disk devices to the disk driver.
1638 *
1639 * FIXME: Currently we don't export them to the midlayer at all.
1640 * That will be fixed once LSI engineers have audited the
1641 * firmware for possible issues.
1642 */
1643 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS &&
1644 sdev->type == TYPE_DISK) {
1645 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1646 sdev->id;
1647 if (instance->pd_list[pd_index].driveState ==
1648 MR_PD_STATE_SYSTEM) {
1649 blk_queue_rq_timeout(sdev->request_queue,
1650 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
1651 return 0;
1652 }
147aab6a 1653 return -ENXIO;
044833b5 1654 }
e5b3a65f
CH		 1655
1656 /*
044833b5
YB		 1657 * The RAID firmware may require extended timeouts.
1658 */
1659 blk_queue_rq_timeout(sdev->request_queue,
1660 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
1661 return 0;
1662}
1663
1664static int megasas_slave_alloc(struct scsi_device *sdev)
1665{
1666 u16 pd_index = 0;
1667 struct megasas_instance *instance ;
1668 instance = megasas_lookup_instance(sdev->host->host_no);
1669 if ((sdev->channel < MEGASAS_MAX_PD_CHANNELS) &&
1670 (sdev->type == TYPE_DISK)) {
1671 /*
1672 * Open the OS scan to the SYSTEM PD
1673 */
1674 pd_index =
1675 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1676 sdev->id;
1677 if ((instance->pd_list[pd_index].driveState ==
1678 MR_PD_STATE_SYSTEM) &&
1679 (instance->pd_list[pd_index].driveType ==
1680 TYPE_DISK)) {
1681 return 0;
1682 }
1683 return -ENXIO;
1684 }
147aab6a
CH		 1685 return 0;
1686}
1687
9c915a8c 1688void megaraid_sas_kill_hba(struct megasas_instance *instance)
39a98554 1689{
1690 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
9c915a8c 1691 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
36807e67 1692 (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
229fe47c 1693 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
21d3c710
SS		 1694 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
1695 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
9c915a8c 1696 writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
229fe47c 1697 /* Flush */
1698 readl(&instance->reg_set->doorbell);
1699 if (instance->mpio && instance->requestorId)
1700 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
39a98554 1701 } else {
9c915a8c 1702 writel(MFI_STOP_ADP, &instance->reg_set->inbound_doorbell);
1703 }
1704}
1705
1706 /**
1707 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
1708 * restored to max value
1709 * @instance: Adapter soft state
1710 *
1711 */
1712void
1713megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
1714{
1715 unsigned long flags;
1716 if (instance->flag & MEGASAS_FW_BUSY
c5daa6a9 1717 && time_after(jiffies, instance->last_time + 5 * HZ)
1718 && atomic_read(&instance->fw_outstanding) <
1719 instance->throttlequeuedepth + 1) {
9c915a8c 1720
1721 spin_lock_irqsave(instance->host->host_lock, flags);
1722 instance->flag &= ~MEGASAS_FW_BUSY;
404a8a1a 1723 if (instance->is_imr) {
9c915a8c 1724 instance->host->can_queue =
1725 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
1726 } else
1727 instance->host->can_queue =
1728 instance->max_fw_cmds - MEGASAS_INT_CMDS;
1729
1730 spin_unlock_irqrestore(instance->host->host_lock, flags);
39a98554 1731 }
1732}
1733
7343eb65 1734/**
1735 * megasas_complete_cmd_dpc - Returns FW's controller structure
1736 * @instance_addr: Address of adapter soft state
1737 *
1738 * Tasklet to complete cmds
1739 */
1740static void megasas_complete_cmd_dpc(unsigned long instance_addr)
1741{
1742 u32 producer;
1743 u32 consumer;
1744 u32 context;
1745 struct megasas_cmd *cmd;
1746 struct megasas_instance *instance =
1747 (struct megasas_instance *)instance_addr;
1748 unsigned long flags;
1749
1750 /* If we have already declared adapter dead, donot complete cmds */
39a98554 1751 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR )
7343eb65 1752 return;
1753
1754 spin_lock_irqsave(&instance->completion_lock, flags);
1755
94cd65dd
SS		 1756 producer = le32_to_cpu(*instance->producer);
1757 consumer = le32_to_cpu(*instance->consumer);
7343eb65 1758
1759 while (consumer != producer) {
94cd65dd 1760 context = le32_to_cpu(instance->reply_queue[consumer]);
39a98554 1761 if (context >= instance->max_fw_cmds) {
1762 printk(KERN_ERR "Unexpected context value %x\n",
1763 context);
1764 BUG();
1765 }
7343eb65 1766
1767 cmd = instance->cmd_list[context];
1768
1769 megasas_complete_cmd(instance, cmd, DID_OK);
1770
1771 consumer++;
1772 if (consumer == (instance->max_fw_cmds + 1)) {
1773 consumer = 0;
1774 }
1775 }
1776
94cd65dd 1777 *instance->consumer = cpu_to_le32(producer);
7343eb65 1778
1779 spin_unlock_irqrestore(&instance->completion_lock, flags);
1780
1781 /*
1782 * Check if we can restore can_queue
1783 */
9c915a8c 1784 megasas_check_and_restore_queue_depth(instance);
7343eb65 1785}
1786
229fe47c 1787/**
1788 * megasas_start_timer - Initializes a timer object
1789 * @instance: Adapter soft state
1790 * @timer: timer object to be initialized
1791 * @fn: timer function
1792 * @interval: time interval between timer function call
1793 *
1794 */
1795void megasas_start_timer(struct megasas_instance *instance,
1796 struct timer_list *timer,
1797 void *fn, unsigned long interval)
1798{
1799 init_timer(timer);
1800 timer->expires = jiffies + interval;
1801 timer->data = (unsigned long)instance;
1802 timer->function = fn;
1803 add_timer(timer);
1804}
1805
707e09bd
YB		 1806static void
1807megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
1808
1809static void
1810process_fw_state_change_wq(struct work_struct *work);
1811
1812void megasas_do_ocr(struct megasas_instance *instance)
1813{
1814 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
1815 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
1816 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
94cd65dd 1817 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
707e09bd 1818 }
d46a3ad6 1819 instance->instancet->disable_intr(instance);
707e09bd
YB		 1820 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
1821 instance->issuepend_done = 0;
1822
1823 atomic_set(&instance->fw_outstanding, 0);
1824 megasas_internal_reset_defer_cmds(instance);
1825 process_fw_state_change_wq(&instance->work_init);
1826}
1827
229fe47c 1828/* This function will get the current SR-IOV LD/VF affiliation */
1829static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
1830 int initial)
1831{
1832 struct megasas_cmd *cmd;
1833 struct megasas_dcmd_frame *dcmd;
1834 struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
1835 struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
1836 struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
1837 dma_addr_t new_affiliation_h;
1838 dma_addr_t new_affiliation_111_h;
1839 int ld, retval = 0;
1840 u8 thisVf;
1841
1842 cmd = megasas_get_cmd(instance);
1843
1844 if (!cmd) {
1845 printk(KERN_DEBUG "megasas: megasas_get_ld_vf_"
1846 "affiliation: Failed to get cmd for scsi%d.\n",
1847 instance->host->host_no);
1848 return -ENOMEM;
1849 }
1850
1851 dcmd = &cmd->frame->dcmd;
1852
1853 if (!instance->vf_affiliation && !instance->vf_affiliation_111) {
1854 printk(KERN_WARNING "megasas: SR-IOV: Couldn't get LD/VF "
1855 "affiliation for scsi%d.\n", instance->host->host_no);
1856 megasas_return_cmd(instance, cmd);
1857 return -ENOMEM;
1858 }
1859
1860 if (initial)
1861 if (instance->PlasmaFW111)
1862 memset(instance->vf_affiliation_111, 0,
1863 sizeof(struct MR_LD_VF_AFFILIATION_111));
1864 else
1865 memset(instance->vf_affiliation, 0,
1866 (MAX_LOGICAL_DRIVES + 1) *
1867 sizeof(struct MR_LD_VF_AFFILIATION));
1868 else {
1869 if (instance->PlasmaFW111)
1870 new_affiliation_111 =
1871 pci_alloc_consistent(instance->pdev,
1872 sizeof(struct MR_LD_VF_AFFILIATION_111),
1873 &new_affiliation_111_h);
1874 else
1875 new_affiliation =
1876 pci_alloc_consistent(instance->pdev,
1877 (MAX_LOGICAL_DRIVES + 1) *
1878 sizeof(struct MR_LD_VF_AFFILIATION),
1879 &new_affiliation_h);
1880 if (!new_affiliation && !new_affiliation_111) {
1881 printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate "
1882 "memory for new affiliation for scsi%d.\n",
1883 instance->host->host_no);
1884 megasas_return_cmd(instance, cmd);
1885 return -ENOMEM;
1886 }
1887 if (instance->PlasmaFW111)
1888 memset(new_affiliation_111, 0,
1889 sizeof(struct MR_LD_VF_AFFILIATION_111));
1890 else
1891 memset(new_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
1892 sizeof(struct MR_LD_VF_AFFILIATION));
1893 }
1894
1895 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1896
1897 dcmd->cmd = MFI_CMD_DCMD;
1898 dcmd->cmd_status = 0xFF;
1899 dcmd->sge_count = 1;
1900 dcmd->flags = MFI_FRAME_DIR_BOTH;
1901 dcmd->timeout = 0;
1902 dcmd->pad_0 = 0;
1903 if (instance->PlasmaFW111) {
1904 dcmd->data_xfer_len = sizeof(struct MR_LD_VF_AFFILIATION_111);
1905 dcmd->opcode = MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111;
1906 } else {
1907 dcmd->data_xfer_len = (MAX_LOGICAL_DRIVES + 1) *
1908 sizeof(struct MR_LD_VF_AFFILIATION);
1909 dcmd->opcode = MR_DCMD_LD_VF_MAP_GET_ALL_LDS;
1910 }
1911
1912 if (initial) {
1913 if (instance->PlasmaFW111)
1914 dcmd->sgl.sge32[0].phys_addr =
1915 instance->vf_affiliation_111_h;
1916 else
1917 dcmd->sgl.sge32[0].phys_addr =
1918 instance->vf_affiliation_h;
1919 } else {
1920 if (instance->PlasmaFW111)
1921 dcmd->sgl.sge32[0].phys_addr = new_affiliation_111_h;
1922 else
1923 dcmd->sgl.sge32[0].phys_addr = new_affiliation_h;
1924 }
1925 if (instance->PlasmaFW111)
1926 dcmd->sgl.sge32[0].length =
1927 sizeof(struct MR_LD_VF_AFFILIATION_111);
1928 else
1929 dcmd->sgl.sge32[0].length = (MAX_LOGICAL_DRIVES + 1) *
1930 sizeof(struct MR_LD_VF_AFFILIATION);
1931
1932 printk(KERN_WARNING "megasas: SR-IOV: Getting LD/VF affiliation for "
1933 "scsi%d\n", instance->host->host_no);
1934
1935 megasas_issue_blocked_cmd(instance, cmd, 0);
1936
1937 if (dcmd->cmd_status) {
1938 printk(KERN_WARNING "megasas: SR-IOV: LD/VF affiliation DCMD"
1939 " failed with status 0x%x for scsi%d.\n",
1940 dcmd->cmd_status, instance->host->host_no);
1941 retval = 1; /* Do a scan if we couldn't get affiliation */
1942 goto out;
1943 }
1944
1945 if (!initial) {
1946 if (instance->PlasmaFW111) {
1947 if (!new_affiliation_111->vdCount) {
1948 printk(KERN_WARNING "megasas: SR-IOV: Got new "
1949 "LD/VF affiliation for passive path "
1950 "for scsi%d.\n",
1951 instance->host->host_no);
1952 retval = 1;
1953 goto out;
1954 }
1955 thisVf = new_affiliation_111->thisVf;
1956 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
1957 if (instance->vf_affiliation_111->map[ld].policy[thisVf] != new_affiliation_111->map[ld].policy[thisVf]) {
1958 printk(KERN_WARNING "megasas: SR-IOV: "
1959 "Got new LD/VF affiliation "
1960 "for scsi%d.\n",
1961 instance->host->host_no);
1962 memcpy(instance->vf_affiliation_111,
1963 new_affiliation_111,
1964 sizeof(struct MR_LD_VF_AFFILIATION_111));
1965 retval = 1;
1966 goto out;
1967 }
1968 } else {
1969 if (!new_affiliation->ldCount) {
1970 printk(KERN_WARNING "megasas: SR-IOV: Got new "
1971 "LD/VF affiliation for passive "
1972 "path for scsi%d.\n",
1973 instance->host->host_no);
1974 retval = 1;
1975 goto out;
1976 }
1977 newmap = new_affiliation->map;
1978 savedmap = instance->vf_affiliation->map;
1979 thisVf = new_affiliation->thisVf;
1980 for (ld = 0 ; ld < new_affiliation->ldCount; ld++) {
1981 if (savedmap->policy[thisVf] !=
1982 newmap->policy[thisVf]) {
1983 printk(KERN_WARNING "megasas: SR-IOV: "
1984 "Got new LD/VF affiliation "
1985 "for scsi%d.\n",
1986 instance->host->host_no);
1987 memcpy(instance->vf_affiliation,
1988 new_affiliation,
1989 new_affiliation->size);
1990 retval = 1;
1991 goto out;
1992 }
1993 savedmap = (struct MR_LD_VF_MAP *)
1994 ((unsigned char *)savedmap +
1995 savedmap->size);
1996 newmap = (struct MR_LD_VF_MAP *)
1997 ((unsigned char *)newmap +
1998 newmap->size);
1999 }
2000 }
2001 }
2002out:
2003 if (new_affiliation) {
2004 if (instance->PlasmaFW111)
2005 pci_free_consistent(instance->pdev,
2006 sizeof(struct MR_LD_VF_AFFILIATION_111),
2007 new_affiliation_111,
2008 new_affiliation_111_h);
2009 else
2010 pci_free_consistent(instance->pdev,
2011 (MAX_LOGICAL_DRIVES + 1) *
2012 sizeof(struct MR_LD_VF_AFFILIATION),
2013 new_affiliation, new_affiliation_h);
2014 }
2015 megasas_return_cmd(instance, cmd);
2016
2017 return retval;
2018}
2019
2020/* This function will tell FW to start the SR-IOV heartbeat */
2021int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2022 int initial)
2023{
2024 struct megasas_cmd *cmd;
2025 struct megasas_dcmd_frame *dcmd;
2026 int retval = 0;
2027
2028 cmd = megasas_get_cmd(instance);
2029
2030 if (!cmd) {
2031 printk(KERN_DEBUG "megasas: megasas_sriov_start_heartbeat: "
2032 "Failed to get cmd for scsi%d.\n",
2033 instance->host->host_no);
2034 return -ENOMEM;
2035 }
2036
2037 dcmd = &cmd->frame->dcmd;
2038
2039 if (initial) {
2040 instance->hb_host_mem =
2041 pci_alloc_consistent(instance->pdev,
2042 sizeof(struct MR_CTRL_HB_HOST_MEM),
2043 &instance->hb_host_mem_h);
2044 if (!instance->hb_host_mem) {
2045 printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate"
2046 " memory for heartbeat host memory for "
2047 "scsi%d.\n", instance->host->host_no);
2048 retval = -ENOMEM;
2049 goto out;
2050 }
2051 memset(instance->hb_host_mem, 0,
2052 sizeof(struct MR_CTRL_HB_HOST_MEM));
2053 }
2054
2055 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2056
2057 dcmd->mbox.s[0] = sizeof(struct MR_CTRL_HB_HOST_MEM);
2058 dcmd->cmd = MFI_CMD_DCMD;
2059 dcmd->cmd_status = 0xFF;
2060 dcmd->sge_count = 1;
2061 dcmd->flags = MFI_FRAME_DIR_BOTH;
2062 dcmd->timeout = 0;
2063 dcmd->pad_0 = 0;
2064 dcmd->data_xfer_len = sizeof(struct MR_CTRL_HB_HOST_MEM);
2065 dcmd->opcode = MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC;
2066 dcmd->sgl.sge32[0].phys_addr = instance->hb_host_mem_h;
2067 dcmd->sgl.sge32[0].length = sizeof(struct MR_CTRL_HB_HOST_MEM);
2068
2069 printk(KERN_WARNING "megasas: SR-IOV: Starting heartbeat for scsi%d\n",
2070 instance->host->host_no);
2071
2072 if (!megasas_issue_polled(instance, cmd)) {
2073 retval = 0;
2074 } else {
2075 printk(KERN_WARNING "megasas: SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2076 "_MEM_ALLOC DCMD timed out for scsi%d\n",
2077 instance->host->host_no);
2078 retval = 1;
2079 goto out;
2080 }
2081
2082
2083 if (dcmd->cmd_status) {
2084 printk(KERN_WARNING "megasas: SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2085 "_MEM_ALLOC DCMD failed with status 0x%x for scsi%d\n",
2086 dcmd->cmd_status,
2087 instance->host->host_no);
2088 retval = 1;
2089 goto out;
2090 }
2091
2092out:
2093 megasas_return_cmd(instance, cmd);
2094
2095 return retval;
2096}
2097
2098/* Handler for SR-IOV heartbeat */
2099void megasas_sriov_heartbeat_handler(unsigned long instance_addr)
2100{
2101 struct megasas_instance *instance =
2102 (struct megasas_instance *)instance_addr;
2103
2104 if (instance->hb_host_mem->HB.fwCounter !=
2105 instance->hb_host_mem->HB.driverCounter) {
2106 instance->hb_host_mem->HB.driverCounter =
2107 instance->hb_host_mem->HB.fwCounter;
2108 mod_timer(&instance->sriov_heartbeat_timer,
2109 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2110 } else {
2111 printk(KERN_WARNING "megasas: SR-IOV: Heartbeat never "
2112 "completed for scsi%d\n", instance->host->host_no);
2113 schedule_work(&instance->work_init);
2114 }
2115}
2116
c4a3e0a5
BS		 2117/**
2118 * megasas_wait_for_outstanding - Wait for all outstanding cmds
2119 * @instance: Adapter soft state
2120 *
25985edc 2121 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
c4a3e0a5
BS		 2122 * complete all its outstanding commands. Returns error if one or more IOs
2123 * are pending after this time period. It also marks the controller dead.
2124 */
2125static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2126{
2127 int i;
39a98554 2128 u32 reset_index;
c4a3e0a5 2129 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
39a98554 2130 u8 adprecovery;
2131 unsigned long flags;
2132 struct list_head clist_local;
2133 struct megasas_cmd *reset_cmd;
707e09bd
YB		 2134 u32 fw_state;
2135 u8 kill_adapter_flag;
39a98554 2136
2137 spin_lock_irqsave(&instance->hba_lock, flags);
2138 adprecovery = instance->adprecovery;
2139 spin_unlock_irqrestore(&instance->hba_lock, flags);
2140
2141 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
2142
2143 INIT_LIST_HEAD(&clist_local);
2144 spin_lock_irqsave(&instance->hba_lock, flags);
2145 list_splice_init(&instance->internal_reset_pending_q,
2146 &clist_local);
2147 spin_unlock_irqrestore(&instance->hba_lock, flags);
2148
2149 printk(KERN_NOTICE "megasas: HBA reset wait ...\n");
2150 for (i = 0; i < wait_time; i++) {
2151 msleep(1000);
2152 spin_lock_irqsave(&instance->hba_lock, flags);
2153 adprecovery = instance->adprecovery;
2154 spin_unlock_irqrestore(&instance->hba_lock, flags);
2155 if (adprecovery == MEGASAS_HBA_OPERATIONAL)
2156 break;
2157 }
2158
2159 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
2160 printk(KERN_NOTICE "megasas: reset: Stopping HBA.\n");
2161 spin_lock_irqsave(&instance->hba_lock, flags);
2162 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2163 spin_unlock_irqrestore(&instance->hba_lock, flags);
2164 return FAILED;
2165 }
2166
2167 reset_index = 0;
2168 while (!list_empty(&clist_local)) {
2169 reset_cmd = list_entry((&clist_local)->next,
2170 struct megasas_cmd, list);
2171 list_del_init(&reset_cmd->list);
2172 if (reset_cmd->scmd) {
2173 reset_cmd->scmd->result = DID_RESET << 16;
5cd049a5 2174 printk(KERN_NOTICE "%d:%p reset [%02x]\n",
39a98554 2175 reset_index, reset_cmd,
5cd049a5 2176 reset_cmd->scmd->cmnd[0]);
39a98554 2177
2178 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
2179 megasas_return_cmd(instance, reset_cmd);
2180 } else if (reset_cmd->sync_cmd) {
2181 printk(KERN_NOTICE "megasas:%p synch cmds"
2182 "reset queue\n",
2183 reset_cmd);
2184
2185 reset_cmd->cmd_status = ENODATA;
2186 instance->instancet->fire_cmd(instance,
2187 reset_cmd->frame_phys_addr,
2188 0, instance->reg_set);
2189 } else {
2190 printk(KERN_NOTICE "megasas: %p unexpected"
2191 "cmds lst\n",
2192 reset_cmd);
2193 }
2194 reset_index++;
2195 }
2196
2197 return SUCCESS;
2198 }
c4a3e0a5 2199
c007b8b2 2200 for (i = 0; i < resetwaittime; i++) {
c4a3e0a5 2201
e4a082c7
SP		 2202 int outstanding = atomic_read(&instance->fw_outstanding);
2203
2204 if (!outstanding)
c4a3e0a5
BS		 2205 break;
2206
2207 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2208 printk(KERN_NOTICE "megasas: [%2d]waiting for %d "
e4a082c7 2209 "commands to complete\n",i,outstanding);
7343eb65 2210 /*
2211 * Call cmd completion routine. Cmd to be
2212 * be completed directly without depending on isr.
2213 */
2214 megasas_complete_cmd_dpc((unsigned long)instance);
c4a3e0a5
BS		 2215 }
2216
2217 msleep(1000);
2218 }
2219
707e09bd
YB		 2220 i = 0;
2221 kill_adapter_flag = 0;
2222 do {
2223 fw_state = instance->instancet->read_fw_status_reg(
2224 instance->reg_set) & MFI_STATE_MASK;
2225 if ((fw_state == MFI_STATE_FAULT) &&
2226 (instance->disableOnlineCtrlReset == 0)) {
2227 if (i == 3) {
2228 kill_adapter_flag = 2;
2229 break;
2230 }
2231 megasas_do_ocr(instance);
2232 kill_adapter_flag = 1;
2233
2234 /* wait for 1 secs to let FW finish the pending cmds */
2235 msleep(1000);
2236 }
2237 i++;
2238 } while (i <= 3);
2239
2240 if (atomic_read(&instance->fw_outstanding) &&
2241 !kill_adapter_flag) {
2242 if (instance->disableOnlineCtrlReset == 0) {
2243
2244 megasas_do_ocr(instance);
2245
2246 /* wait for 5 secs to let FW finish the pending cmds */
2247 for (i = 0; i < wait_time; i++) {
2248 int outstanding =
2249 atomic_read(&instance->fw_outstanding);
2250 if (!outstanding)
2251 return SUCCESS;
2252 msleep(1000);
2253 }
2254 }
2255 }
2256
2257 if (atomic_read(&instance->fw_outstanding) ||
2258 (kill_adapter_flag == 2)) {
39a98554 2259 printk(KERN_NOTICE "megaraid_sas: pending cmds after reset\n");
e3bbff9f
SP		 2260 /*
2261 * Send signal to FW to stop processing any pending cmds.
2262 * The controller will be taken offline by the OS now.
2263 */
0c79e681
YB		 2264 if ((instance->pdev->device ==
2265 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2266 (instance->pdev->device ==
2267 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
2268 writel(MFI_STOP_ADP,
9c915a8c 2269 &instance->reg_set->doorbell);
0c79e681
YB		 2270 } else {
2271 writel(MFI_STOP_ADP,
e3bbff9f 2272 &instance->reg_set->inbound_doorbell);
0c79e681 2273 }
658dcedb 2274 megasas_dump_pending_frames(instance);
39a98554 2275 spin_lock_irqsave(&instance->hba_lock, flags);
2276 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2277 spin_unlock_irqrestore(&instance->hba_lock, flags);
c4a3e0a5
BS		 2278 return FAILED;
2279 }
2280
39a98554 2281 printk(KERN_NOTICE "megaraid_sas: no pending cmds after reset\n");
2282
c4a3e0a5
BS		 2283 return SUCCESS;
2284}
2285
2286/**
2287 * megasas_generic_reset - Generic reset routine
2288 * @scmd: Mid-layer SCSI command
2289 *
2290 * This routine implements a generic reset handler for device, bus and host
2291 * reset requests. Device, bus and host specific reset handlers can use this
2292 * function after they do their specific tasks.
2293 */
2294static int megasas_generic_reset(struct scsi_cmnd *scmd)
2295{
2296 int ret_val;
2297 struct megasas_instance *instance;
2298
2299 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2300
5cd049a5
CH		 2301 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2302 scmd->cmnd[0], scmd->retries);
c4a3e0a5 2303
39a98554 2304 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
c4a3e0a5
BS		 2305 printk(KERN_ERR "megasas: cannot recover from previous reset "
2306 "failures\n");
2307 return FAILED;
2308 }
2309
c4a3e0a5 2310 ret_val = megasas_wait_for_outstanding(instance);
c4a3e0a5
BS		 2311 if (ret_val == SUCCESS)
2312 printk(KERN_NOTICE "megasas: reset successful \n");
2313 else
2314 printk(KERN_ERR "megasas: failed to do reset\n");
2315
c4a3e0a5
BS		 2316 return ret_val;
2317}
2318
05e9ebbe
SP		 2319/**
2320 * megasas_reset_timer - quiesce the adapter if required
2321 * @scmd: scsi cmnd
2322 *
2323 * Sets the FW busy flag and reduces the host->can_queue if the
2324 * cmd has not been completed within the timeout period.
2325 */
2326static enum
242f9dcb 2327blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
05e9ebbe 2328{
05e9ebbe
SP		 2329 struct megasas_instance *instance;
2330 unsigned long flags;
2331
2332 if (time_after(jiffies, scmd->jiffies_at_alloc +
2333 (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) {
242f9dcb 2334 return BLK_EH_NOT_HANDLED;
05e9ebbe
SP		 2335 }
2336
f575c5d3 2337 instance = (struct megasas_instance *)scmd->device->host->hostdata;
05e9ebbe
SP		 2338 if (!(instance->flag & MEGASAS_FW_BUSY)) {
2339 /* FW is busy, throttle IO */
2340 spin_lock_irqsave(instance->host->host_lock, flags);
2341
c5daa6a9 2342 instance->host->can_queue = instance->throttlequeuedepth;
05e9ebbe
SP		 2343 instance->last_time = jiffies;
2344 instance->flag |= MEGASAS_FW_BUSY;
2345
2346 spin_unlock_irqrestore(instance->host->host_lock, flags);
2347 }
242f9dcb 2348 return BLK_EH_RESET_TIMER;
05e9ebbe
SP		 2349}
2350
c4a3e0a5
BS		 2351/**
2352 * megasas_reset_device - Device reset handler entry point
2353 */
2354static int megasas_reset_device(struct scsi_cmnd *scmd)
2355{
2356 int ret;
2357
2358 /*
2359 * First wait for all commands to complete
2360 */
2361 ret = megasas_generic_reset(scmd);
2362
2363 return ret;
2364}
2365
2366/**
2367 * megasas_reset_bus_host - Bus & host reset handler entry point
2368 */
2369static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
2370{
2371 int ret;
9c915a8c 2372 struct megasas_instance *instance;
2373 instance = (struct megasas_instance *)scmd->device->host->hostdata;
c4a3e0a5
BS		 2374
2375 /*
80682fa9 2376 * First wait for all commands to complete
c4a3e0a5 2377 */
36807e67 2378 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
229fe47c 2379 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
21d3c710
SS		 2380 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
2381 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
229fe47c 2382 ret = megasas_reset_fusion(scmd->device->host, 1);
9c915a8c 2383 else
2384 ret = megasas_generic_reset(scmd);
c4a3e0a5
BS		 2385
2386 return ret;
2387}
2388
cf62a0a5
SP		 2389/**
2390 * megasas_bios_param - Returns disk geometry for a disk
2391 * @sdev: device handle
2392 * @bdev: block device
2393 * @capacity: drive capacity
2394 * @geom: geometry parameters
2395 */
2396static int
2397megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
2398 sector_t capacity, int geom[])
2399{
2400 int heads;
2401 int sectors;
2402 sector_t cylinders;
2403 unsigned long tmp;
2404 /* Default heads (64) & sectors (32) */
2405 heads = 64;
2406 sectors = 32;
2407
2408 tmp = heads * sectors;
2409 cylinders = capacity;
2410
2411 sector_div(cylinders, tmp);
2412
2413 /*
2414 * Handle extended translation size for logical drives > 1Gb
2415 */
2416
2417 if (capacity >= 0x200000) {
2418 heads = 255;
2419 sectors = 63;
2420 tmp = heads*sectors;
2421 cylinders = capacity;
2422 sector_div(cylinders, tmp);
2423 }
2424
2425 geom[0] = heads;
2426 geom[1] = sectors;
2427 geom[2] = cylinders;
2428
2429 return 0;
2430}
2431
7e8a75f4
YB		 2432static void megasas_aen_polling(struct work_struct *work);
2433
c4a3e0a5
BS		 2434/**
2435 * megasas_service_aen - Processes an event notification
2436 * @instance: Adapter soft state
2437 * @cmd: AEN command completed by the ISR
2438 *
2439 * For AEN, driver sends a command down to FW that is held by the FW till an
2440 * event occurs. When an event of interest occurs, FW completes the command
2441 * that it was previously holding.
2442 *
2443 * This routines sends SIGIO signal to processes that have registered with the
2444 * driver for AEN.
2445 */
2446static void
2447megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
2448{
c3518837 2449 unsigned long flags;
c4a3e0a5
BS		 2450 /*
2451 * Don't signal app if it is just an aborted previously registered aen
2452 */
c3518837
YB		 2453 if ((!cmd->abort_aen) && (instance->unload == 0)) {
2454 spin_lock_irqsave(&poll_aen_lock, flags);
2455 megasas_poll_wait_aen = 1;
2456 spin_unlock_irqrestore(&poll_aen_lock, flags);
2457 wake_up(&megasas_poll_wait);
c4a3e0a5 2458 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
c3518837 2459 }
c4a3e0a5
BS		 2460 else
2461 cmd->abort_aen = 0;
2462
2463 instance->aen_cmd = NULL;
2464 megasas_return_cmd(instance, cmd);
7e8a75f4 2465
39a98554 2466 if ((instance->unload == 0) &&
2467 ((instance->issuepend_done == 1))) {
7e8a75f4
YB		 2468 struct megasas_aen_event *ev;
2469 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
2470 if (!ev) {
2471 printk(KERN_ERR "megasas_service_aen: out of memory\n");
2472 } else {
2473 ev->instance = instance;
2474 instance->ev = ev;
c1d390d8
XF		 2475 INIT_DELAYED_WORK(&ev->hotplug_work,
2476 megasas_aen_polling);
2477 schedule_delayed_work(&ev->hotplug_work, 0);
7e8a75f4
YB		 2478 }
2479 }
c4a3e0a5
BS		 2480}
2481
4bcde509 2482static int megasas_change_queue_depth(struct scsi_device *sdev,
2483 int queue_depth, int reason)
2484{
2485 if (reason != SCSI_QDEPTH_DEFAULT)
2486 return -EOPNOTSUPP;
2487
2488 if (queue_depth > sdev->host->can_queue)
2489 queue_depth = sdev->host->can_queue;
2490 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev),
2491 queue_depth);
2492
2493 return queue_depth;
2494}
2495
c4a3e0a5
BS		 2496/*
2497 * Scsi host template for megaraid_sas driver
2498 */
2499static struct scsi_host_template megasas_template = {
2500
2501 .module = THIS_MODULE,
f28cd7cf 2502 .name = "LSI SAS based MegaRAID driver",
c4a3e0a5 2503 .proc_name = "megaraid_sas",
147aab6a 2504 .slave_configure = megasas_slave_configure,
044833b5 2505 .slave_alloc = megasas_slave_alloc,
c4a3e0a5
BS		 2506 .queuecommand = megasas_queue_command,
2507 .eh_device_reset_handler = megasas_reset_device,
2508 .eh_bus_reset_handler = megasas_reset_bus_host,
2509 .eh_host_reset_handler = megasas_reset_bus_host,
05e9ebbe 2510 .eh_timed_out = megasas_reset_timer,
cf62a0a5 2511 .bios_param = megasas_bios_param,
c4a3e0a5 2512 .use_clustering = ENABLE_CLUSTERING,
4bcde509 2513 .change_queue_depth = megasas_change_queue_depth,
54b2b50c 2514 .no_write_same = 1,
c4a3e0a5
BS		 2515};
2516
2517/**
2518 * megasas_complete_int_cmd - Completes an internal command
2519 * @instance: Adapter soft state
2520 * @cmd: Command to be completed
2521 *
2522 * The megasas_issue_blocked_cmd() function waits for a command to complete
2523 * after it issues a command. This function wakes up that waiting routine by
2524 * calling wake_up() on the wait queue.
2525 */
2526static void
2527megasas_complete_int_cmd(struct megasas_instance *instance,
2528 struct megasas_cmd *cmd)
2529{
2530 cmd->cmd_status = cmd->frame->io.cmd_status;
2531
2532 if (cmd->cmd_status == ENODATA) {
2533 cmd->cmd_status = 0;
2534 }
2535 wake_up(&instance->int_cmd_wait_q);
2536}
2537
2538/**
2539 * megasas_complete_abort - Completes aborting a command
2540 * @instance: Adapter soft state
2541 * @cmd: Cmd that was issued to abort another cmd
2542 *
0d49016b 2543 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
2544 * after it issues an abort on a previously issued command. This function
c4a3e0a5
BS		 2545 * wakes up all functions waiting on the same wait queue.
2546 */
2547static void
2548megasas_complete_abort(struct megasas_instance *instance,
2549 struct megasas_cmd *cmd)
2550{
2551 if (cmd->sync_cmd) {
2552 cmd->sync_cmd = 0;
2553 cmd->cmd_status = 0;
2554 wake_up(&instance->abort_cmd_wait_q);
2555 }
2556
2557 return;
2558}
2559
c4a3e0a5
BS		 2560/**
2561 * megasas_complete_cmd - Completes a command
2562 * @instance: Adapter soft state
2563 * @cmd: Command to be completed
0d49016b 2564 * @alt_status: If non-zero, use this value as status to
c4a3e0a5
BS		 2565 * SCSI mid-layer instead of the value returned
2566 * by the FW. This should be used if caller wants
2567 * an alternate status (as in the case of aborted
2568 * commands)
2569 */
9c915a8c 2570void
c4a3e0a5
BS		 2571megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
2572 u8 alt_status)
2573{
2574 int exception = 0;
2575 struct megasas_header *hdr = &cmd->frame->hdr;
c3518837 2576 unsigned long flags;
9c915a8c 2577 struct fusion_context *fusion = instance->ctrl_context;
94cd65dd 2578 u32 opcode;
c4a3e0a5 2579
39a98554 2580 /* flag for the retry reset */
2581 cmd->retry_for_fw_reset = 0;
2582
05e9ebbe
SP		 2583 if (cmd->scmd)
2584 cmd->scmd->SCp.ptr = NULL;
c4a3e0a5
BS		 2585
2586 switch (hdr->cmd) {
e5f93a36 2587 case MFI_CMD_INVALID:
2588 /* Some older 1068 controller FW may keep a pended
2589 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
2590 when booting the kdump kernel. Ignore this command to
2591 prevent a kernel panic on shutdown of the kdump kernel. */
2592 printk(KERN_WARNING "megaraid_sas: MFI_CMD_INVALID command "
2593 "completed.\n");
2594 printk(KERN_WARNING "megaraid_sas: If you have a controller "
2595 "other than PERC5, please upgrade your firmware.\n");
2596 break;
c4a3e0a5
BS		 2597 case MFI_CMD_PD_SCSI_IO:
2598 case MFI_CMD_LD_SCSI_IO:
2599
2600 /*
2601 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
2602 * issued either through an IO path or an IOCTL path. If it
2603 * was via IOCTL, we will send it to internal completion.
2604 */
2605 if (cmd->sync_cmd) {
2606 cmd->sync_cmd = 0;
2607 megasas_complete_int_cmd(instance, cmd);
2608 break;
2609 }
2610
c4a3e0a5
BS		 2611 case MFI_CMD_LD_READ:
2612 case MFI_CMD_LD_WRITE:
2613
2614 if (alt_status) {
2615 cmd->scmd->result = alt_status << 16;
2616 exception = 1;
2617 }
2618
2619 if (exception) {
2620
e4a082c7 2621 atomic_dec(&instance->fw_outstanding);
c4a3e0a5 2622
155d98f0 2623 scsi_dma_unmap(cmd->scmd);
c4a3e0a5
BS		 2624 cmd->scmd->scsi_done(cmd->scmd);
2625 megasas_return_cmd(instance, cmd);
2626
2627 break;
2628 }
2629
2630 switch (hdr->cmd_status) {
2631
2632 case MFI_STAT_OK:
2633 cmd->scmd->result = DID_OK << 16;
2634 break;
2635
2636 case MFI_STAT_SCSI_IO_FAILED:
2637 case MFI_STAT_LD_INIT_IN_PROGRESS:
2638 cmd->scmd->result =
2639 (DID_ERROR << 16) | hdr->scsi_status;
2640 break;
2641
2642 case MFI_STAT_SCSI_DONE_WITH_ERROR:
2643
2644 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
2645
2646 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
2647 memset(cmd->scmd->sense_buffer, 0,
2648 SCSI_SENSE_BUFFERSIZE);
2649 memcpy(cmd->scmd->sense_buffer, cmd->sense,
2650 hdr->sense_len);
2651
2652 cmd->scmd->result |= DRIVER_SENSE << 24;
2653 }
2654
2655 break;
2656
2657 case MFI_STAT_LD_OFFLINE:
2658 case MFI_STAT_DEVICE_NOT_FOUND:
2659 cmd->scmd->result = DID_BAD_TARGET << 16;
2660 break;
2661
2662 default:
2663 printk(KERN_DEBUG "megasas: MFI FW status %#x\n",
2664 hdr->cmd_status);
2665 cmd->scmd->result = DID_ERROR << 16;
2666 break;
2667 }
2668
e4a082c7 2669 atomic_dec(&instance->fw_outstanding);
c4a3e0a5 2670
155d98f0 2671 scsi_dma_unmap(cmd->scmd);
c4a3e0a5
BS		 2672 cmd->scmd->scsi_done(cmd->scmd);
2673 megasas_return_cmd(instance, cmd);
2674
2675 break;
2676
2677 case MFI_CMD_SMP:
2678 case MFI_CMD_STP:
2679 case MFI_CMD_DCMD:
94cd65dd 2680 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
9c915a8c 2681 /* Check for LD map update */
94cd65dd
SS		 2682 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
2683 && (cmd->frame->dcmd.mbox.b[1] == 1)) {
bc93d425 2684 fusion->fast_path_io = 0;
9c915a8c 2685 spin_lock_irqsave(instance->host->host_lock, flags);
2686 if (cmd->frame->hdr.cmd_status != 0) {
2687 if (cmd->frame->hdr.cmd_status !=
2688 MFI_STAT_NOT_FOUND)
2689 printk(KERN_WARNING "megasas: map sync"
2690 "failed, status = 0x%x.\n",
2691 cmd->frame->hdr.cmd_status);
2692 else {
2693 megasas_return_cmd(instance, cmd);
2694 spin_unlock_irqrestore(
2695 instance->host->host_lock,
2696 flags);
2697 break;
2698 }
2699 } else
2700 instance->map_id++;
2701 megasas_return_cmd(instance, cmd);
bc93d425
SS		 2702
2703 /*
2704 * Set fast path IO to ZERO.
2705 * Validate Map will set proper value.
2706 * Meanwhile all IOs will go as LD IO.
2707 */
2708 if (MR_ValidateMapInfo(instance))
9c915a8c 2709 fusion->fast_path_io = 1;
2710 else
2711 fusion->fast_path_io = 0;
2712 megasas_sync_map_info(instance);
2713 spin_unlock_irqrestore(instance->host->host_lock,
2714 flags);
2715 break;
2716 }
94cd65dd
SS		 2717 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
2718 opcode == MR_DCMD_CTRL_EVENT_GET) {
c3518837
YB		 2719 spin_lock_irqsave(&poll_aen_lock, flags);
2720 megasas_poll_wait_aen = 0;
2721 spin_unlock_irqrestore(&poll_aen_lock, flags);
2722 }
c4a3e0a5
BS		 2723
2724 /*
2725 * See if got an event notification
2726 */
94cd65dd 2727 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
c4a3e0a5
BS		 2728 megasas_service_aen(instance, cmd);
2729 else
2730 megasas_complete_int_cmd(instance, cmd);
2731
2732 break;
2733
2734 case MFI_CMD_ABORT:
2735 /*
2736 * Cmd issued to abort another cmd returned
2737 */
2738 megasas_complete_abort(instance, cmd);
2739 break;
2740
2741 default:
2742 printk("megasas: Unknown command completed! [0x%X]\n",
2743 hdr->cmd);
2744 break;
2745 }
2746}
2747
39a98554 2748/**
2749 * megasas_issue_pending_cmds_again - issue all pending cmds
2750 * in FW again because of the fw reset
2751 * @instance: Adapter soft state
2752 */
2753static inline void
2754megasas_issue_pending_cmds_again(struct megasas_instance *instance)
2755{
2756 struct megasas_cmd *cmd;
2757 struct list_head clist_local;
2758 union megasas_evt_class_locale class_locale;
2759 unsigned long flags;
2760 u32 seq_num;
2761
2762 INIT_LIST_HEAD(&clist_local);
2763 spin_lock_irqsave(&instance->hba_lock, flags);
2764 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
2765 spin_unlock_irqrestore(&instance->hba_lock, flags);
2766
2767 while (!list_empty(&clist_local)) {
2768 cmd = list_entry((&clist_local)->next,
2769 struct megasas_cmd, list);
2770 list_del_init(&cmd->list);
2771
2772 if (cmd->sync_cmd || cmd->scmd) {
2773 printk(KERN_NOTICE "megaraid_sas: command %p, %p:%d"
2774 "detected to be pending while HBA reset.\n",
2775 cmd, cmd->scmd, cmd->sync_cmd);
2776
2777 cmd->retry_for_fw_reset++;
2778
2779 if (cmd->retry_for_fw_reset == 3) {
2780 printk(KERN_NOTICE "megaraid_sas: cmd %p, %p:%d"
2781 "was tried multiple times during reset."
2782 "Shutting down the HBA\n",
2783 cmd, cmd->scmd, cmd->sync_cmd);
2784 megaraid_sas_kill_hba(instance);
2785
2786 instance->adprecovery =
2787 MEGASAS_HW_CRITICAL_ERROR;
2788 return;
2789 }
2790 }
2791
2792 if (cmd->sync_cmd == 1) {
2793 if (cmd->scmd) {
2794 printk(KERN_NOTICE "megaraid_sas: unexpected"
2795 "cmd attached to internal command!\n");
2796 }
2797 printk(KERN_NOTICE "megasas: %p synchronous cmd"
2798 "on the internal reset queue,"
2799 "issue it again.\n", cmd);
2800 cmd->cmd_status = ENODATA;
2801 instance->instancet->fire_cmd(instance,
2802 cmd->frame_phys_addr ,
2803 0, instance->reg_set);
2804 } else if (cmd->scmd) {
5cd049a5 2805 printk(KERN_NOTICE "megasas: %p scsi cmd [%02x]"
39a98554 2806 "detected on the internal queue, issue again.\n",
5cd049a5 2807 cmd, cmd->scmd->cmnd[0]);
39a98554 2808
2809 atomic_inc(&instance->fw_outstanding);
2810 instance->instancet->fire_cmd(instance,
2811 cmd->frame_phys_addr,
2812 cmd->frame_count-1, instance->reg_set);
2813 } else {
2814 printk(KERN_NOTICE "megasas: %p unexpected cmd on the"
2815 "internal reset defer list while re-issue!!\n",
2816 cmd);
2817 }
2818 }
2819
2820 if (instance->aen_cmd) {
2821 printk(KERN_NOTICE "megaraid_sas: aen_cmd in def process\n");
2822 megasas_return_cmd(instance, instance->aen_cmd);
2823
2824 instance->aen_cmd = NULL;
2825 }
2826
2827 /*
2828 * Initiate AEN (Asynchronous Event Notification)
2829 */
2830 seq_num = instance->last_seq_num;
2831 class_locale.members.reserved = 0;
2832 class_locale.members.locale = MR_EVT_LOCALE_ALL;
2833 class_locale.members.class = MR_EVT_CLASS_DEBUG;
2834
2835 megasas_register_aen(instance, seq_num, class_locale.word);
2836}
2837
2838/**
2839 * Move the internal reset pending commands to a deferred queue.
2840 *
2841 * We move the commands pending at internal reset time to a
2842 * pending queue. This queue would be flushed after successful
2843 * completion of the internal reset sequence. if the internal reset
2844 * did not complete in time, the kernel reset handler would flush
2845 * these commands.
2846 **/
2847static void
2848megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
2849{
2850 struct megasas_cmd *cmd;
2851 int i;
2852 u32 max_cmd = instance->max_fw_cmds;
2853 u32 defer_index;
2854 unsigned long flags;
2855
2856 defer_index = 0;
2857 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
2858 for (i = 0; i < max_cmd; i++) {
2859 cmd = instance->cmd_list[i];
2860 if (cmd->sync_cmd == 1 || cmd->scmd) {
2861 printk(KERN_NOTICE "megasas: moving cmd[%d]:%p:%d:%p"
2862 "on the defer queue as internal\n",
2863 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
2864
2865 if (!list_empty(&cmd->list)) {
2866 printk(KERN_NOTICE "megaraid_sas: ERROR while"
2867 " moving this cmd:%p, %d %p, it was"
2868 "discovered on some list?\n",
2869 cmd, cmd->sync_cmd, cmd->scmd);
2870
2871 list_del_init(&cmd->list);
2872 }
2873 defer_index++;
2874 list_add_tail(&cmd->list,
2875 &instance->internal_reset_pending_q);
2876 }
2877 }
2878 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
2879}
2880
2881
2882static void
2883process_fw_state_change_wq(struct work_struct *work)
2884{
2885 struct megasas_instance *instance =
2886 container_of(work, struct megasas_instance, work_init);
2887 u32 wait;
2888 unsigned long flags;
2889
2890 if (instance->adprecovery != MEGASAS_ADPRESET_SM_INFAULT) {
2891 printk(KERN_NOTICE "megaraid_sas: error, recovery st %x \n",
2892 instance->adprecovery);
2893 return ;
2894 }
2895
2896 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) {
2897 printk(KERN_NOTICE "megaraid_sas: FW detected to be in fault"
2898 "state, restarting it...\n");
2899
d46a3ad6 2900 instance->instancet->disable_intr(instance);
39a98554 2901 atomic_set(&instance->fw_outstanding, 0);
2902
2903 atomic_set(&instance->fw_reset_no_pci_access, 1);
2904 instance->instancet->adp_reset(instance, instance->reg_set);
2905 atomic_set(&instance->fw_reset_no_pci_access, 0 );
2906
2907 printk(KERN_NOTICE "megaraid_sas: FW restarted successfully,"
2908 "initiating next stage...\n");
2909
2910 printk(KERN_NOTICE "megaraid_sas: HBA recovery state machine,"
2911 "state 2 starting...\n");
2912
2913 /*waitting for about 20 second before start the second init*/
2914 for (wait = 0; wait < 30; wait++) {
2915 msleep(1000);
2916 }
2917
058a8fac 2918 if (megasas_transition_to_ready(instance, 1)) {
39a98554 2919 printk(KERN_NOTICE "megaraid_sas:adapter not ready\n");
2920
2921 megaraid_sas_kill_hba(instance);
2922 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2923 return ;
2924 }
2925
2926 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2927 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2928 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
2929 ) {
2930 *instance->consumer = *instance->producer;
2931 } else {
2932 *instance->consumer = 0;
2933 *instance->producer = 0;
2934 }
2935
2936 megasas_issue_init_mfi(instance);
2937
2938 spin_lock_irqsave(&instance->hba_lock, flags);
2939 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
2940 spin_unlock_irqrestore(&instance->hba_lock, flags);
d46a3ad6 2941 instance->instancet->enable_intr(instance);
39a98554 2942
2943 megasas_issue_pending_cmds_again(instance);
2944 instance->issuepend_done = 1;
2945 }
2946 return ;
2947}
2948
c4a3e0a5
BS		 2949/**
2950 * megasas_deplete_reply_queue - Processes all completed commands
2951 * @instance: Adapter soft state
2952 * @alt_status: Alternate status to be returned to
2953 * SCSI mid-layer instead of the status
2954 * returned by the FW
39a98554 2955 * Note: this must be called with hba lock held
c4a3e0a5 2956 */
858119e1 2957static int
39a98554 2958megasas_deplete_reply_queue(struct megasas_instance *instance,
2959 u8 alt_status)
c4a3e0a5 2960{
39a98554 2961 u32 mfiStatus;
2962 u32 fw_state;
2963
2964 if ((mfiStatus = instance->instancet->check_reset(instance,
2965 instance->reg_set)) == 1) {
2966 return IRQ_HANDLED;
2967 }
2968
2969 if ((mfiStatus = instance->instancet->clear_intr(
2970 instance->reg_set)
2971 ) == 0) {
e1419191 2972 /* Hardware may not set outbound_intr_status in MSI-X mode */
c8e858fe 2973 if (!instance->msix_vectors)
e1419191 2974 return IRQ_NONE;
39a98554 2975 }
2976
2977 instance->mfiStatus = mfiStatus;
2978
2979 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
2980 fw_state = instance->instancet->read_fw_status_reg(
2981 instance->reg_set) & MFI_STATE_MASK;
2982
2983 if (fw_state != MFI_STATE_FAULT) {
2984 printk(KERN_NOTICE "megaraid_sas: fw state:%x\n",
2985 fw_state);
2986 }
2987
2988 if ((fw_state == MFI_STATE_FAULT) &&
2989 (instance->disableOnlineCtrlReset == 0)) {
2990 printk(KERN_NOTICE "megaraid_sas: wait adp restart\n");
2991
2992 if ((instance->pdev->device ==
2993 PCI_DEVICE_ID_LSI_SAS1064R) ||
2994 (instance->pdev->device ==
2995 PCI_DEVICE_ID_DELL_PERC5) ||
2996 (instance->pdev->device ==
2997 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2998
2999 *instance->consumer =
94cd65dd 3000 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
39a98554 3001 }
3002
3003
d46a3ad6 3004 instance->instancet->disable_intr(instance);
39a98554 3005 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
3006 instance->issuepend_done = 0;
3007
3008 atomic_set(&instance->fw_outstanding, 0);
3009 megasas_internal_reset_defer_cmds(instance);
3010
3011 printk(KERN_NOTICE "megasas: fwState=%x, stage:%d\n",
3012 fw_state, instance->adprecovery);
3013
3014 schedule_work(&instance->work_init);
3015 return IRQ_HANDLED;
3016
3017 } else {
3018 printk(KERN_NOTICE "megasas: fwstate:%x, dis_OCR=%x\n",
3019 fw_state, instance->disableOnlineCtrlReset);
3020 }
3021 }
c4a3e0a5 3022
5d018ad0 3023 tasklet_schedule(&instance->isr_tasklet);
c4a3e0a5
BS		 3024 return IRQ_HANDLED;
3025}
c4a3e0a5
BS		 3026/**
3027 * megasas_isr - isr entry point
3028 */
7d12e780 3029static irqreturn_t megasas_isr(int irq, void *devp)
c4a3e0a5 3030{
c8e858fe 3031 struct megasas_irq_context *irq_context = devp;
3032 struct megasas_instance *instance = irq_context->instance;
39a98554 3033 unsigned long flags;
3034 irqreturn_t rc;
3035
c8e858fe 3036 if (atomic_read(&instance->fw_reset_no_pci_access))
39a98554 3037 return IRQ_HANDLED;
3038
39a98554 3039 spin_lock_irqsave(&instance->hba_lock, flags);
3040 rc = megasas_deplete_reply_queue(instance, DID_OK);
3041 spin_unlock_irqrestore(&instance->hba_lock, flags);
3042
3043 return rc;
c4a3e0a5
BS		 3044}
3045
3046/**
3047 * megasas_transition_to_ready - Move the FW to READY state
1341c939 3048 * @instance: Adapter soft state
c4a3e0a5
BS		 3049 *
3050 * During the initialization, FW passes can potentially be in any one of
3051 * several possible states. If the FW in operational, waiting-for-handshake
3052 * states, driver must take steps to bring it to ready state. Otherwise, it
3053 * has to wait for the ready state.
3054 */
9c915a8c 3055int
058a8fac 3056megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
c4a3e0a5
BS		 3057{
3058 int i;
3059 u8 max_wait;
3060 u32 fw_state;
3061 u32 cur_state;
7218df69 3062 u32 abs_state, curr_abs_state;
c4a3e0a5 3063
1341c939 3064 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
c4a3e0a5 3065
e3bbff9f 3066 if (fw_state != MFI_STATE_READY)
0d49016b 3067 printk(KERN_INFO "megasas: Waiting for FW to come to ready"
3068 " state\n");
e3bbff9f 3069
c4a3e0a5
BS		 3070 while (fw_state != MFI_STATE_READY) {
3071
7218df69
YB		 3072 abs_state =
3073 instance->instancet->read_fw_status_reg(instance->reg_set);
3074
c4a3e0a5
BS		 3075 switch (fw_state) {
3076
3077 case MFI_STATE_FAULT:
c4a3e0a5 3078 printk(KERN_DEBUG "megasas: FW in FAULT state!!\n");
058a8fac 3079 if (ocr) {
3080 max_wait = MEGASAS_RESET_WAIT_TIME;
3081 cur_state = MFI_STATE_FAULT;
3082 break;
3083 } else
3084 return -ENODEV;
c4a3e0a5
BS		 3085
3086 case MFI_STATE_WAIT_HANDSHAKE:
3087 /*
3088 * Set the CLR bit in inbound doorbell
3089 */
0c79e681 3090 if ((instance->pdev->device ==
87911122
YB		 3091 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3092 (instance->pdev->device ==
9c915a8c 3093 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3094 (instance->pdev->device ==
21d3c710 3095 PCI_DEVICE_ID_LSI_FUSION) ||
36807e67 3096 (instance->pdev->device ==
229fe47c 3097 PCI_DEVICE_ID_LSI_PLASMA) ||
3098 (instance->pdev->device ==
21d3c710
SS		 3099 PCI_DEVICE_ID_LSI_INVADER) ||
3100 (instance->pdev->device ==
3101 PCI_DEVICE_ID_LSI_FURY)) {
87911122
YB		 3102 writel(
3103 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
9c915a8c 3104 &instance->reg_set->doorbell);
87911122
YB		 3105 } else {
3106 writel(
3107 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3108 &instance->reg_set->inbound_doorbell);
3109 }
c4a3e0a5 3110
7218df69 3111 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 3112 cur_state = MFI_STATE_WAIT_HANDSHAKE;
3113 break;
3114
e3bbff9f 3115 case MFI_STATE_BOOT_MESSAGE_PENDING:
87911122 3116 if ((instance->pdev->device ==
9c915a8c 3117 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3118 (instance->pdev->device ==
3119 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3120 (instance->pdev->device ==
36807e67 3121 PCI_DEVICE_ID_LSI_FUSION) ||
229fe47c 3122 (instance->pdev->device ==
3123 PCI_DEVICE_ID_LSI_PLASMA) ||
36807e67 3124 (instance->pdev->device ==
21d3c710
SS		 3125 PCI_DEVICE_ID_LSI_INVADER) ||
3126 (instance->pdev->device ==
3127 PCI_DEVICE_ID_LSI_FURY)) {
87911122 3128 writel(MFI_INIT_HOTPLUG,
9c915a8c 3129 &instance->reg_set->doorbell);
87911122
YB		 3130 } else
3131 writel(MFI_INIT_HOTPLUG,
3132 &instance->reg_set->inbound_doorbell);
e3bbff9f 3133
7218df69 3134 max_wait = MEGASAS_RESET_WAIT_TIME;
e3bbff9f
SP		 3135 cur_state = MFI_STATE_BOOT_MESSAGE_PENDING;
3136 break;
3137
c4a3e0a5
BS		 3138 case MFI_STATE_OPERATIONAL:
3139 /*
e3bbff9f 3140 * Bring it to READY state; assuming max wait 10 secs
c4a3e0a5 3141 */
d46a3ad6 3142 instance->instancet->disable_intr(instance);
87911122
YB		 3143 if ((instance->pdev->device ==
3144 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3145 (instance->pdev->device ==
9c915a8c 3146 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3147 (instance->pdev->device
36807e67 3148 == PCI_DEVICE_ID_LSI_FUSION) ||
229fe47c 3149 (instance->pdev->device
3150 == PCI_DEVICE_ID_LSI_PLASMA) ||
36807e67 3151 (instance->pdev->device
21d3c710
SS		 3152 == PCI_DEVICE_ID_LSI_INVADER) ||
3153 (instance->pdev->device
3154 == PCI_DEVICE_ID_LSI_FURY)) {
87911122 3155 writel(MFI_RESET_FLAGS,
9c915a8c 3156 &instance->reg_set->doorbell);
36807e67 3157 if ((instance->pdev->device ==
21d3c710
SS		 3158 PCI_DEVICE_ID_LSI_FUSION) ||
3159 (instance->pdev->device ==
229fe47c 3160 PCI_DEVICE_ID_LSI_PLASMA) ||
3161 (instance->pdev->device ==
21d3c710
SS		 3162 PCI_DEVICE_ID_LSI_INVADER) ||
3163 (instance->pdev->device ==
3164 PCI_DEVICE_ID_LSI_FURY)) {
9c915a8c 3165 for (i = 0; i < (10 * 1000); i += 20) {
3166 if (readl(
3167 &instance->
3168 reg_set->
3169 doorbell) & 1)
3170 msleep(20);
3171 else
3172 break;
3173 }
3174 }
87911122
YB		 3175 } else
3176 writel(MFI_RESET_FLAGS,
3177 &instance->reg_set->inbound_doorbell);
c4a3e0a5 3178
7218df69 3179 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 3180 cur_state = MFI_STATE_OPERATIONAL;
3181 break;
3182
3183 case MFI_STATE_UNDEFINED:
3184 /*
3185 * This state should not last for more than 2 seconds
3186 */
7218df69 3187 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 3188 cur_state = MFI_STATE_UNDEFINED;
3189 break;
3190
3191 case MFI_STATE_BB_INIT:
7218df69 3192 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 3193 cur_state = MFI_STATE_BB_INIT;
3194 break;
3195
3196 case MFI_STATE_FW_INIT:
7218df69 3197 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 3198 cur_state = MFI_STATE_FW_INIT;
3199 break;
3200
3201 case MFI_STATE_FW_INIT_2:
7218df69 3202 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 3203 cur_state = MFI_STATE_FW_INIT_2;
3204 break;
3205
3206 case MFI_STATE_DEVICE_SCAN:
7218df69 3207 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 3208 cur_state = MFI_STATE_DEVICE_SCAN;
3209 break;
3210
3211 case MFI_STATE_FLUSH_CACHE:
7218df69 3212 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 3213 cur_state = MFI_STATE_FLUSH_CACHE;
3214 break;
3215
3216 default:
3217 printk(KERN_DEBUG "megasas: Unknown state 0x%x\n",
3218 fw_state);
3219 return -ENODEV;
3220 }
3221
3222 /*
3223 * The cur_state should not last for more than max_wait secs
3224 */
3225 for (i = 0; i < (max_wait * 1000); i++) {
0d49016b 3226 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) &
1341c939 3227 MFI_STATE_MASK ;
7218df69
YB		 3228 curr_abs_state =
3229 instance->instancet->read_fw_status_reg(instance->reg_set);
c4a3e0a5 3230
7218df69 3231 if (abs_state == curr_abs_state) {
c4a3e0a5
BS		 3232 msleep(1);
3233 } else
3234 break;
3235 }
3236
3237 /*
3238 * Return error if fw_state hasn't changed after max_wait
3239 */
7218df69 3240 if (curr_abs_state == abs_state) {
c4a3e0a5
BS		 3241 printk(KERN_DEBUG "FW state [%d] hasn't changed "
3242 "in %d secs\n", fw_state, max_wait);
3243 return -ENODEV;
3244 }
39a98554 3245 }
0d49016b 3246 printk(KERN_INFO "megasas: FW now in Ready state\n");
c4a3e0a5
BS		 3247
3248 return 0;
3249}
3250
3251/**
3252 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
3253 * @instance: Adapter soft state
3254 */
3255static void megasas_teardown_frame_pool(struct megasas_instance *instance)
3256{
3257 int i;
9c915a8c 3258 u32 max_cmd = instance->max_mfi_cmds;
c4a3e0a5
BS		 3259 struct megasas_cmd *cmd;
3260
3261 if (!instance->frame_dma_pool)
3262 return;
3263
3264 /*
3265 * Return all frames to pool
3266 */
3267 for (i = 0; i < max_cmd; i++) {
3268
3269 cmd = instance->cmd_list[i];
3270
3271 if (cmd->frame)
3272 pci_pool_free(instance->frame_dma_pool, cmd->frame,
3273 cmd->frame_phys_addr);
3274
3275 if (cmd->sense)
e3bbff9f 3276 pci_pool_free(instance->sense_dma_pool, cmd->sense,
c4a3e0a5
BS		 3277 cmd->sense_phys_addr);
3278 }
3279
3280 /*
3281 * Now destroy the pool itself
3282 */
3283 pci_pool_destroy(instance->frame_dma_pool);
3284 pci_pool_destroy(instance->sense_dma_pool);
3285
3286 instance->frame_dma_pool = NULL;
3287 instance->sense_dma_pool = NULL;
3288}
3289
3290/**
3291 * megasas_create_frame_pool - Creates DMA pool for cmd frames
3292 * @instance: Adapter soft state
3293 *
3294 * Each command packet has an embedded DMA memory buffer that is used for
3295 * filling MFI frame and the SG list that immediately follows the frame. This
3296 * function creates those DMA memory buffers for each command packet by using
3297 * PCI pool facility.
3298 */
3299static int megasas_create_frame_pool(struct megasas_instance *instance)
3300{
3301 int i;
3302 u32 max_cmd;
3303 u32 sge_sz;
3304 u32 sgl_sz;
3305 u32 total_sz;
3306 u32 frame_count;
3307 struct megasas_cmd *cmd;
3308
9c915a8c 3309 max_cmd = instance->max_mfi_cmds;
c4a3e0a5
BS		 3310
3311 /*
3312 * Size of our frame is 64 bytes for MFI frame, followed by max SG
3313 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer
3314 */
3315 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
3316 sizeof(struct megasas_sge32);
3317
f4c9a131
YB		 3318 if (instance->flag_ieee) {
3319 sge_sz = sizeof(struct megasas_sge_skinny);
3320 }
3321
c4a3e0a5
BS		 3322 /*
3323 * Calculated the number of 64byte frames required for SGL
3324 */
3325 sgl_sz = sge_sz * instance->max_num_sge;
3326 frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE - 1) / MEGAMFI_FRAME_SIZE;
39a98554 3327 frame_count = 15;
c4a3e0a5
BS		 3328
3329 /*
3330 * We need one extra frame for the MFI command
3331 */
3332 frame_count++;
3333
3334 total_sz = MEGAMFI_FRAME_SIZE * frame_count;
3335 /*
3336 * Use DMA pool facility provided by PCI layer
3337 */
3338 instance->frame_dma_pool = pci_pool_create("megasas frame pool",
3339 instance->pdev, total_sz, 64,
3340 0);
3341
3342 if (!instance->frame_dma_pool) {
3343 printk(KERN_DEBUG "megasas: failed to setup frame pool\n");
3344 return -ENOMEM;
3345 }
3346
3347 instance->sense_dma_pool = pci_pool_create("megasas sense pool",
3348 instance->pdev, 128, 4, 0);
3349
3350 if (!instance->sense_dma_pool) {
3351 printk(KERN_DEBUG "megasas: failed to setup sense pool\n");
3352
3353 pci_pool_destroy(instance->frame_dma_pool);
3354 instance->frame_dma_pool = NULL;
3355
3356 return -ENOMEM;
3357 }
3358
3359 /*
3360 * Allocate and attach a frame to each of the commands in cmd_list.
3361 * By making cmd->index as the context instead of the &cmd, we can
3362 * always use 32bit context regardless of the architecture
3363 */
3364 for (i = 0; i < max_cmd; i++) {
3365
3366 cmd = instance->cmd_list[i];
3367
3368 cmd->frame = pci_pool_alloc(instance->frame_dma_pool,
3369 GFP_KERNEL, &cmd->frame_phys_addr);
3370
3371 cmd->sense = pci_pool_alloc(instance->sense_dma_pool,
3372 GFP_KERNEL, &cmd->sense_phys_addr);
3373
3374 /*
3375 * megasas_teardown_frame_pool() takes care of freeing
3376 * whatever has been allocated
3377 */
3378 if (!cmd->frame || !cmd->sense) {
3379 printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n");
3380 megasas_teardown_frame_pool(instance);
3381 return -ENOMEM;
3382 }
3383
707e09bd 3384 memset(cmd->frame, 0, total_sz);
94cd65dd 3385 cmd->frame->io.context = cpu_to_le32(cmd->index);
7e8a75f4 3386 cmd->frame->io.pad_0 = 0;
e5f93a36 3387 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) &&
229fe47c 3388 (instance->pdev->device != PCI_DEVICE_ID_LSI_PLASMA) &&
e5f93a36 3389 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) &&
21d3c710 3390 (instance->pdev->device != PCI_DEVICE_ID_LSI_FURY) &&
e5f93a36 3391 (reset_devices))
3392 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
c4a3e0a5
BS		 3393 }
3394
3395 return 0;
3396}
3397
3398/**
3399 * megasas_free_cmds - Free all the cmds in the free cmd pool
3400 * @instance: Adapter soft state
3401 */
9c915a8c 3402void megasas_free_cmds(struct megasas_instance *instance)
c4a3e0a5
BS		 3403{
3404 int i;
3405 /* First free the MFI frame pool */
3406 megasas_teardown_frame_pool(instance);
3407
3408 /* Free all the commands in the cmd_list */
9c915a8c 3409 for (i = 0; i < instance->max_mfi_cmds; i++)
3410
c4a3e0a5
BS		 3411 kfree(instance->cmd_list[i]);
3412
3413 /* Free the cmd_list buffer itself */
3414 kfree(instance->cmd_list);
3415 instance->cmd_list = NULL;
3416
3417 INIT_LIST_HEAD(&instance->cmd_pool);
3418}
3419
3420/**
3421 * megasas_alloc_cmds - Allocates the command packets
3422 * @instance: Adapter soft state
3423 *
3424 * Each command that is issued to the FW, whether IO commands from the OS or
3425 * internal commands like IOCTLs, are wrapped in local data structure called
3426 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
3427 * the FW.
3428 *
3429 * Each frame has a 32-bit field called context (tag). This context is used
3430 * to get back the megasas_cmd from the frame when a frame gets completed in
3431 * the ISR. Typically the address of the megasas_cmd itself would be used as
3432 * the context. But we wanted to keep the differences between 32 and 64 bit
3433 * systems to the mininum. We always use 32 bit integers for the context. In
3434 * this driver, the 32 bit values are the indices into an array cmd_list.
3435 * This array is used only to look up the megasas_cmd given the context. The
3436 * free commands themselves are maintained in a linked list called cmd_pool.
3437 */
9c915a8c 3438int megasas_alloc_cmds(struct megasas_instance *instance)
c4a3e0a5
BS		 3439{
3440 int i;
3441 int j;
3442 u32 max_cmd;
3443 struct megasas_cmd *cmd;
3444
9c915a8c 3445 max_cmd = instance->max_mfi_cmds;
c4a3e0a5
BS		 3446
3447 /*
3448 * instance->cmd_list is an array of struct megasas_cmd pointers.
3449 * Allocate the dynamic array first and then allocate individual
3450 * commands.
3451 */
dd00cc48 3452 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
c4a3e0a5
BS		 3453
3454 if (!instance->cmd_list) {
3455 printk(KERN_DEBUG "megasas: out of memory\n");
3456 return -ENOMEM;
3457 }
3458
9c915a8c 3459 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
c4a3e0a5
BS		 3460
3461 for (i = 0; i < max_cmd; i++) {
3462 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
3463 GFP_KERNEL);
3464
3465 if (!instance->cmd_list[i]) {
3466
3467 for (j = 0; j < i; j++)
3468 kfree(instance->cmd_list[j]);
3469
3470 kfree(instance->cmd_list);
3471 instance->cmd_list = NULL;
3472
3473 return -ENOMEM;
3474 }
3475 }
3476
3477 /*
3478 * Add all the commands to command pool (instance->cmd_pool)
3479 */
3480 for (i = 0; i < max_cmd; i++) {
3481 cmd = instance->cmd_list[i];
3482 memset(cmd, 0, sizeof(struct megasas_cmd));
3483 cmd->index = i;
39a98554 3484 cmd->scmd = NULL;
c4a3e0a5
BS		 3485 cmd->instance = instance;
3486
3487 list_add_tail(&cmd->list, &instance->cmd_pool);
3488 }
3489
3490 /*
3491 * Create a frame pool and assign one frame to each cmd
3492 */
3493 if (megasas_create_frame_pool(instance)) {
3494 printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n");
3495 megasas_free_cmds(instance);
3496 }
3497
3498 return 0;
3499}
3500
81e403ce
YB		 3501/*
3502 * megasas_get_pd_list_info - Returns FW's pd_list structure
3503 * @instance: Adapter soft state
3504 * @pd_list: pd_list structure
3505 *
3506 * Issues an internal command (DCMD) to get the FW's controller PD
3507 * list structure. This information is mainly used to find out SYSTEM
3508 * supported by the FW.
3509 */
3510static int
3511megasas_get_pd_list(struct megasas_instance *instance)
3512{
3513 int ret = 0, pd_index = 0;
3514 struct megasas_cmd *cmd;
3515 struct megasas_dcmd_frame *dcmd;
3516 struct MR_PD_LIST *ci;
3517 struct MR_PD_ADDRESS *pd_addr;
3518 dma_addr_t ci_h = 0;
3519
3520 cmd = megasas_get_cmd(instance);
3521
3522 if (!cmd) {
3523 printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n");
3524 return -ENOMEM;
3525 }
3526
3527 dcmd = &cmd->frame->dcmd;
3528
3529 ci = pci_alloc_consistent(instance->pdev,
3530 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h);
3531
3532 if (!ci) {
3533 printk(KERN_DEBUG "Failed to alloc mem for pd_list\n");
3534 megasas_return_cmd(instance, cmd);
3535 return -ENOMEM;
3536 }
3537
3538 memset(ci, 0, sizeof(*ci));
3539 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3540
3541 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
3542 dcmd->mbox.b[1] = 0;
3543 dcmd->cmd = MFI_CMD_DCMD;
3544 dcmd->cmd_status = 0xFF;
3545 dcmd->sge_count = 1;
94cd65dd 3546 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
81e403ce 3547 dcmd->timeout = 0;
780a3762 3548 dcmd->pad_0 = 0;
94cd65dd
SS		 3549 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
3550 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
3551 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
3552 dcmd->sgl.sge32[0].length = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
81e403ce
YB		 3553
3554 if (!megasas_issue_polled(instance, cmd)) {
3555 ret = 0;
3556 } else {
3557 ret = -1;
3558 }
3559
3560 /*
3561 * the following function will get the instance PD LIST.
3562 */
3563
3564 pd_addr = ci->addr;
3565
3566 if ( ret == 0 &&
94cd65dd 3567 (le32_to_cpu(ci->count) <
81e403ce
YB		 3568 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) {
3569
999ece0a 3570 memset(instance->local_pd_list, 0,
81e403ce
YB		 3571 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
3572
94cd65dd 3573 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
81e403ce 3574
999ece0a 3575 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid =
94cd65dd 3576 le16_to_cpu(pd_addr->deviceId);
999ece0a 3577 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType =
81e403ce 3578 pd_addr->scsiDevType;
999ece0a 3579 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState =
81e403ce
YB		 3580 MR_PD_STATE_SYSTEM;
3581 pd_addr++;
3582 }
999ece0a
SS		 3583 memcpy(instance->pd_list, instance->local_pd_list,
3584 sizeof(instance->pd_list));
81e403ce
YB		 3585 }
3586
3587 pci_free_consistent(instance->pdev,
3588 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
3589 ci, ci_h);
3590 megasas_return_cmd(instance, cmd);
3591
3592 return ret;
3593}
3594
bdc6fb8d
YB		 3595/*
3596 * megasas_get_ld_list_info - Returns FW's ld_list structure
3597 * @instance: Adapter soft state
3598 * @ld_list: ld_list structure
3599 *
3600 * Issues an internal command (DCMD) to get the FW's controller PD
3601 * list structure. This information is mainly used to find out SYSTEM
3602 * supported by the FW.
3603 */
3604static int
3605megasas_get_ld_list(struct megasas_instance *instance)
3606{
3607 int ret = 0, ld_index = 0, ids = 0;
3608 struct megasas_cmd *cmd;
3609 struct megasas_dcmd_frame *dcmd;
3610 struct MR_LD_LIST *ci;
3611 dma_addr_t ci_h = 0;
94cd65dd 3612 u32 ld_count;
bdc6fb8d
YB		 3613
3614 cmd = megasas_get_cmd(instance);
3615
3616 if (!cmd) {
3617 printk(KERN_DEBUG "megasas_get_ld_list: Failed to get cmd\n");
3618 return -ENOMEM;
3619 }
3620
3621 dcmd = &cmd->frame->dcmd;
3622
3623 ci = pci_alloc_consistent(instance->pdev,
3624 sizeof(struct MR_LD_LIST),
3625 &ci_h);
3626
3627 if (!ci) {
3628 printk(KERN_DEBUG "Failed to alloc mem in get_ld_list\n");
3629 megasas_return_cmd(instance, cmd);
3630 return -ENOMEM;
3631 }
3632
3633 memset(ci, 0, sizeof(*ci));
3634 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3635
3636 dcmd->cmd = MFI_CMD_DCMD;
3637 dcmd->cmd_status = 0xFF;
3638 dcmd->sge_count = 1;
94cd65dd 3639 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
bdc6fb8d 3640 dcmd->timeout = 0;
94cd65dd
SS		 3641 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
3642 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
3643 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
3644 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_LIST));
bdc6fb8d
YB		 3645 dcmd->pad_0 = 0;
3646
3647 if (!megasas_issue_polled(instance, cmd)) {
3648 ret = 0;
3649 } else {
3650 ret = -1;
3651 }
3652
94cd65dd
SS		 3653 ld_count = le32_to_cpu(ci->ldCount);
3654
bdc6fb8d
YB		 3655 /* the following function will get the instance PD LIST */
3656
94cd65dd 3657 if ((ret == 0) && (ld_count <= MAX_LOGICAL_DRIVES)) {
bdc6fb8d
YB		 3658 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
3659
94cd65dd 3660 for (ld_index = 0; ld_index < ld_count; ld_index++) {
bdc6fb8d
YB		 3661 if (ci->ldList[ld_index].state != 0) {
3662 ids = ci->ldList[ld_index].ref.targetId;
3663 instance->ld_ids[ids] =
3664 ci->ldList[ld_index].ref.targetId;
3665 }
3666 }
3667 }
3668
3669 pci_free_consistent(instance->pdev,
3670 sizeof(struct MR_LD_LIST),
3671 ci,
3672 ci_h);
3673
3674 megasas_return_cmd(instance, cmd);
3675 return ret;
3676}
3677
21c9e160 3678/**
3679 * megasas_ld_list_query - Returns FW's ld_list structure
3680 * @instance: Adapter soft state
3681 * @ld_list: ld_list structure
3682 *
3683 * Issues an internal command (DCMD) to get the FW's controller PD
3684 * list structure. This information is mainly used to find out SYSTEM
3685 * supported by the FW.
3686 */
3687static int
3688megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
3689{
3690 int ret = 0, ld_index = 0, ids = 0;
3691 struct megasas_cmd *cmd;
3692 struct megasas_dcmd_frame *dcmd;
3693 struct MR_LD_TARGETID_LIST *ci;
3694 dma_addr_t ci_h = 0;
94cd65dd 3695 u32 tgtid_count;
21c9e160 3696
3697 cmd = megasas_get_cmd(instance);
3698
3699 if (!cmd) {
3700 printk(KERN_WARNING
3701 "megasas:(megasas_ld_list_query): Failed to get cmd\n");
3702 return -ENOMEM;
3703 }
3704
3705 dcmd = &cmd->frame->dcmd;
3706
3707 ci = pci_alloc_consistent(instance->pdev,
3708 sizeof(struct MR_LD_TARGETID_LIST), &ci_h);
3709
3710 if (!ci) {
3711 printk(KERN_WARNING
3712 "megasas: Failed to alloc mem for ld_list_query\n");
3713 megasas_return_cmd(instance, cmd);
3714 return -ENOMEM;
3715 }
3716
3717 memset(ci, 0, sizeof(*ci));
3718 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3719
3720 dcmd->mbox.b[0] = query_type;
3721
3722 dcmd->cmd = MFI_CMD_DCMD;
3723 dcmd->cmd_status = 0xFF;
3724 dcmd->sge_count = 1;
94cd65dd 3725 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
21c9e160 3726 dcmd->timeout = 0;
94cd65dd
SS		 3727 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
3728 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
3729 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
3730 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
21c9e160 3731 dcmd->pad_0 = 0;
3732
3733 if (!megasas_issue_polled(instance, cmd) && !dcmd->cmd_status) {
3734 ret = 0;
3735 } else {
3736 /* On failure, call older LD list DCMD */
3737 ret = 1;
3738 }
3739
94cd65dd
SS		 3740 tgtid_count = le32_to_cpu(ci->count);
3741
3742 if ((ret == 0) && (tgtid_count <= (MAX_LOGICAL_DRIVES))) {
21c9e160 3743 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
94cd65dd 3744 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
21c9e160 3745 ids = ci->targetId[ld_index];
3746 instance->ld_ids[ids] = ci->targetId[ld_index];
3747 }
3748
3749 }
3750
3751 pci_free_consistent(instance->pdev, sizeof(struct MR_LD_TARGETID_LIST),
3752 ci, ci_h);
3753
3754 megasas_return_cmd(instance, cmd);
3755
3756 return ret;
3757}
3758
c4a3e0a5
BS		 3759/**
3760 * megasas_get_controller_info - Returns FW's controller structure
3761 * @instance: Adapter soft state
3762 * @ctrl_info: Controller information structure
3763 *
3764 * Issues an internal command (DCMD) to get the FW's controller structure.
3765 * This information is mainly used to find out the maximum IO transfer per
3766 * command supported by the FW.
3767 */
3768static int
3769megasas_get_ctrl_info(struct megasas_instance *instance,
3770 struct megasas_ctrl_info *ctrl_info)
3771{
3772 int ret = 0;
3773 struct megasas_cmd *cmd;
3774 struct megasas_dcmd_frame *dcmd;
3775 struct megasas_ctrl_info *ci;
3776 dma_addr_t ci_h = 0;
3777
3778 cmd = megasas_get_cmd(instance);
3779
3780 if (!cmd) {
3781 printk(KERN_DEBUG "megasas: Failed to get a free cmd\n");
3782 return -ENOMEM;
3783 }
3784
3785 dcmd = &cmd->frame->dcmd;
3786
3787 ci = pci_alloc_consistent(instance->pdev,
3788 sizeof(struct megasas_ctrl_info), &ci_h);
3789
3790 if (!ci) {
3791 printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n");
3792 megasas_return_cmd(instance, cmd);
3793 return -ENOMEM;
3794 }
3795
3796 memset(ci, 0, sizeof(*ci));
3797 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3798
3799 dcmd->cmd = MFI_CMD_DCMD;
3800 dcmd->cmd_status = 0xFF;
3801 dcmd->sge_count = 1;
94cd65dd 3802 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
c4a3e0a5 3803 dcmd->timeout = 0;
780a3762 3804 dcmd->pad_0 = 0;
94cd65dd
SS		 3805 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
3806 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
3807 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
3808 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_ctrl_info));
c4a3e0a5
BS		 3809
3810 if (!megasas_issue_polled(instance, cmd)) {
3811 ret = 0;
3812 memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info));
3813 } else {
3814 ret = -1;
3815 }
3816
3817 pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info),
3818 ci, ci_h);
3819
3820 megasas_return_cmd(instance, cmd);
3821 return ret;
3822}
3823
31ea7088 3824/**
3825 * megasas_issue_init_mfi - Initializes the FW
3826 * @instance: Adapter soft state
3827 *
3828 * Issues the INIT MFI cmd
3829 */
3830static int
3831megasas_issue_init_mfi(struct megasas_instance *instance)
3832{
3833 u32 context;
3834
3835 struct megasas_cmd *cmd;
3836
3837 struct megasas_init_frame *init_frame;
3838 struct megasas_init_queue_info *initq_info;
3839 dma_addr_t init_frame_h;
3840 dma_addr_t initq_info_h;
3841
3842 /*
3843 * Prepare a init frame. Note the init frame points to queue info
3844 * structure. Each frame has SGL allocated after first 64 bytes. For
3845 * this frame - since we don't need any SGL - we use SGL's space as
3846 * queue info structure
3847 *
3848 * We will not get a NULL command below. We just created the pool.
3849 */
3850 cmd = megasas_get_cmd(instance);
3851
3852 init_frame = (struct megasas_init_frame *)cmd->frame;
3853 initq_info = (struct megasas_init_queue_info *)
3854 ((unsigned long)init_frame + 64);
3855
3856 init_frame_h = cmd->frame_phys_addr;
3857 initq_info_h = init_frame_h + 64;
3858
3859 context = init_frame->context;
3860 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
3861 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
3862 init_frame->context = context;
3863
94cd65dd
SS		 3864 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
3865 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
31ea7088 3866
94cd65dd
SS		 3867 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
3868 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
31ea7088 3869
3870 init_frame->cmd = MFI_CMD_INIT;
3871 init_frame->cmd_status = 0xFF;
94cd65dd
SS		 3872 init_frame->queue_info_new_phys_addr_lo =
3873 cpu_to_le32(lower_32_bits(initq_info_h));
3874 init_frame->queue_info_new_phys_addr_hi =
3875 cpu_to_le32(upper_32_bits(initq_info_h));
31ea7088 3876
94cd65dd 3877 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
31ea7088 3878
3879 /*
3880 * disable the intr before firing the init frame to FW
3881 */
d46a3ad6 3882 instance->instancet->disable_intr(instance);
31ea7088 3883
3884 /*
3885 * Issue the init frame in polled mode
3886 */
3887
3888 if (megasas_issue_polled(instance, cmd)) {
3889 printk(KERN_ERR "megasas: Failed to init firmware\n");
3890 megasas_return_cmd(instance, cmd);
3891 goto fail_fw_init;
3892 }
3893
3894 megasas_return_cmd(instance, cmd);
3895
3896 return 0;
3897
3898fail_fw_init:
3899 return -EINVAL;
3900}
3901
cd50ba8e 3902static u32
3903megasas_init_adapter_mfi(struct megasas_instance *instance)
c4a3e0a5 3904{
cd50ba8e 3905 struct megasas_register_set __iomem *reg_set;
c4a3e0a5
BS		 3906 u32 context_sz;
3907 u32 reply_q_sz;
c4a3e0a5
BS		 3908
3909 reg_set = instance->reg_set;
3910
c4a3e0a5
BS		 3911 /*
3912 * Get various operational parameters from status register
3913 */
1341c939 3914 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
e3bbff9f
SP		 3915 /*
3916 * Reduce the max supported cmds by 1. This is to ensure that the
3917 * reply_q_sz (1 more than the max cmd that driver may send)
3918 * does not exceed max cmds that the FW can support
3919 */
3920 instance->max_fw_cmds = instance->max_fw_cmds-1;
9c915a8c 3921 instance->max_mfi_cmds = instance->max_fw_cmds;
0d49016b 3922 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >>
1341c939 3923 0x10;
c4a3e0a5
BS		 3924 /*
3925 * Create a pool of commands
3926 */
3927 if (megasas_alloc_cmds(instance))
3928 goto fail_alloc_cmds;
3929
3930 /*
3931 * Allocate memory for reply queue. Length of reply queue should
3932 * be _one_ more than the maximum commands handled by the firmware.
3933 *
3934 * Note: When FW completes commands, it places corresponding contex
3935 * values in this circular reply queue. This circular queue is a fairly
3936 * typical producer-consumer queue. FW is the producer (of completed
3937 * commands) and the driver is the consumer.
3938 */
3939 context_sz = sizeof(u32);
3940 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
3941
3942 instance->reply_queue = pci_alloc_consistent(instance->pdev,
3943 reply_q_sz,
3944 &instance->reply_queue_h);
3945
3946 if (!instance->reply_queue) {
3947 printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n");
3948 goto fail_reply_queue;
3949 }
3950
31ea7088 3951 if (megasas_issue_init_mfi(instance))
c4a3e0a5 3952 goto fail_fw_init;
c4a3e0a5 3953
39a98554 3954 instance->fw_support_ieee = 0;
3955 instance->fw_support_ieee =
3956 (instance->instancet->read_fw_status_reg(reg_set) &
3957 0x04000000);
3958
3959 printk(KERN_NOTICE "megasas_init_mfi: fw_support_ieee=%d",
3960 instance->fw_support_ieee);
3961
3962 if (instance->fw_support_ieee)
3963 instance->flag_ieee = 1;
3964
cd50ba8e 3965 return 0;
3966
3967fail_fw_init:
3968
3969 pci_free_consistent(instance->pdev, reply_q_sz,
3970 instance->reply_queue, instance->reply_queue_h);
3971fail_reply_queue:
3972 megasas_free_cmds(instance);
3973
3974fail_alloc_cmds:
cd50ba8e 3975 return 1;
3976}
3977
3978/**
3979 * megasas_init_fw - Initializes the FW
3980 * @instance: Adapter soft state
3981 *
3982 * This is the main function for initializing firmware
3983 */
3984
3985static int megasas_init_fw(struct megasas_instance *instance)
3986{
3987 u32 max_sectors_1;
3988 u32 max_sectors_2;
d46a3ad6 3989 u32 tmp_sectors, msix_enable, scratch_pad_2;
11f8a7b3 3990 resource_size_t base_addr;
cd50ba8e 3991 struct megasas_register_set __iomem *reg_set;
3992 struct megasas_ctrl_info *ctrl_info;
3993 unsigned long bar_list;
d46a3ad6 3994 int i, loop, fw_msix_count = 0;
229fe47c 3995 struct IOV_111 *iovPtr;
cd50ba8e 3996
3997 /* Find first memory bar */
3998 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
3999 instance->bar = find_first_bit(&bar_list, sizeof(unsigned long));
cd50ba8e 4000 if (pci_request_selected_regions(instance->pdev, instance->bar,
4001 "megasas: LSI")) {
4002 printk(KERN_DEBUG "megasas: IO memory region busy!\n");
4003 return -EBUSY;
4004 }
4005
11f8a7b3
BC		 4006 base_addr = pci_resource_start(instance->pdev, instance->bar);
4007 instance->reg_set = ioremap_nocache(base_addr, 8192);
cd50ba8e 4008
4009 if (!instance->reg_set) {
4010 printk(KERN_DEBUG "megasas: Failed to map IO mem\n");
4011 goto fail_ioremap;
4012 }
4013
4014 reg_set = instance->reg_set;
4015
4016 switch (instance->pdev->device) {
9c915a8c 4017 case PCI_DEVICE_ID_LSI_FUSION:
229fe47c 4018 case PCI_DEVICE_ID_LSI_PLASMA:
36807e67 4019 case PCI_DEVICE_ID_LSI_INVADER:
21d3c710 4020 case PCI_DEVICE_ID_LSI_FURY:
9c915a8c 4021 instance->instancet = &megasas_instance_template_fusion;
4022 break;
cd50ba8e 4023 case PCI_DEVICE_ID_LSI_SAS1078R:
4024 case PCI_DEVICE_ID_LSI_SAS1078DE:
4025 instance->instancet = &megasas_instance_template_ppc;
4026 break;
4027 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
4028 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
4029 instance->instancet = &megasas_instance_template_gen2;
4030 break;
4031 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
4032 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
4033 instance->instancet = &megasas_instance_template_skinny;
4034 break;
4035 case PCI_DEVICE_ID_LSI_SAS1064R:
4036 case PCI_DEVICE_ID_DELL_PERC5:
4037 default:
4038 instance->instancet = &megasas_instance_template_xscale;
4039 break;
4040 }
4041
6431f5d7
SS		 4042 if (megasas_transition_to_ready(instance, 0)) {
4043 atomic_set(&instance->fw_reset_no_pci_access, 1);
4044 instance->instancet->adp_reset
4045 (instance, instance->reg_set);
4046 atomic_set(&instance->fw_reset_no_pci_access, 0);
4047 dev_info(&instance->pdev->dev,
4048 "megasas: FW restarted successfully from %s!\n",
4049 __func__);
4050
4051 /*waitting for about 30 second before retry*/
4052 ssleep(30);
4053
4054 if (megasas_transition_to_ready(instance, 0))
4055 goto fail_ready_state;
4056 }
cd50ba8e 4057
d46a3ad6
SS		 4058 /*
4059 * MSI-X host index 0 is common for all adapter.
4060 * It is used for all MPT based Adapters.
4061 */
4062 instance->reply_post_host_index_addr[0] =
4063 (u32 *)((u8 *)instance->reg_set +
4064 MPI2_REPLY_POST_HOST_INDEX_OFFSET);
4065
3f1abce4 4066 /* Check if MSI-X is supported while in ready state */
4067 msix_enable = (instance->instancet->read_fw_status_reg(reg_set) &
4068 0x4000000) >> 0x1a;
c8e858fe 4069 if (msix_enable && !msix_disable) {
d46a3ad6
SS		 4070 scratch_pad_2 = readl
4071 (&instance->reg_set->outbound_scratch_pad_2);
c8e858fe 4072 /* Check max MSI-X vectors */
229fe47c 4073 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
4074 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA)) {
d46a3ad6
SS		 4075 instance->msix_vectors = (scratch_pad_2
4076 & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
4077 fw_msix_count = instance->msix_vectors;
079eaddf 4078 if (msix_vectors)
4079 instance->msix_vectors =
4080 min(msix_vectors,
4081 instance->msix_vectors);
d46a3ad6
SS		 4082 } else if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)
4083 || (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
4084 /* Invader/Fury supports more than 8 MSI-X */
4085 instance->msix_vectors = ((scratch_pad_2
4086 & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
4087 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
4088 fw_msix_count = instance->msix_vectors;
4089 /* Save 1-15 reply post index address to local memory
4090 * Index 0 is already saved from reg offset
4091 * MPI2_REPLY_POST_HOST_INDEX_OFFSET
4092 */
4093 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
4094 instance->reply_post_host_index_addr[loop] =
4095 (u32 *)((u8 *)instance->reg_set +
4096 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
4097 + (loop * 0x10));
4098 }
4099 if (msix_vectors)
4100 instance->msix_vectors = min(msix_vectors,
4101 instance->msix_vectors);
c8e858fe 4102 } else
4103 instance->msix_vectors = 1;
4104 /* Don't bother allocating more MSI-X vectors than cpus */
4105 instance->msix_vectors = min(instance->msix_vectors,
4106 (unsigned int)num_online_cpus());
4107 for (i = 0; i < instance->msix_vectors; i++)
4108 instance->msixentry[i].entry = i;
4109 i = pci_enable_msix(instance->pdev, instance->msixentry,
4110 instance->msix_vectors);
4111 if (i >= 0) {
4112 if (i) {
4113 if (!pci_enable_msix(instance->pdev,
4114 instance->msixentry, i))
4115 instance->msix_vectors = i;
4116 else
4117 instance->msix_vectors = 0;
4118 }
4119 } else
4120 instance->msix_vectors = 0;
d46a3ad6
SS		 4121
4122 dev_info(&instance->pdev->dev, "[scsi%d]: FW supports"
4123 "<%d> MSIX vector,Online CPUs: <%d>,"
4124 "Current MSIX <%d>\n", instance->host->host_no,
4125 fw_msix_count, (unsigned int)num_online_cpus(),
4126 instance->msix_vectors);
c8e858fe 4127 }
3f1abce4 4128
cd50ba8e 4129 /* Get operational params, sge flags, send init cmd to controller */
4130 if (instance->instancet->init_adapter(instance))
eb1b1237 4131 goto fail_init_adapter;
cd50ba8e 4132
4133 printk(KERN_ERR "megasas: INIT adapter done\n");
4134
39a98554 4135 /** for passthrough
4136 * the following function will get the PD LIST.
4137 */
4138
81e403ce
YB		 4139 memset(instance->pd_list, 0 ,
4140 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
58968fc8
HR		 4141 if (megasas_get_pd_list(instance) < 0) {
4142 printk(KERN_ERR "megasas: failed to get PD list\n");
4143 goto fail_init_adapter;
4144 }
81e403ce 4145
bdc6fb8d 4146 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
21c9e160 4147 if (megasas_ld_list_query(instance,
4148 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
4149 megasas_get_ld_list(instance);
bdc6fb8d 4150
c4a3e0a5
BS		 4151 ctrl_info = kmalloc(sizeof(struct megasas_ctrl_info), GFP_KERNEL);
4152
4153 /*
4154 * Compute the max allowed sectors per IO: The controller info has two
4155 * limits on max sectors. Driver should use the minimum of these two.
4156 *
4157 * 1 << stripe_sz_ops.min = max sectors per strip
4158 *
4159 * Note that older firmwares ( < FW ver 30) didn't report information
4160 * to calculate max_sectors_1. So the number ended up as zero always.
4161 */
14faea9f 4162 tmp_sectors = 0;
c4a3e0a5
BS		 4163 if (ctrl_info && !megasas_get_ctrl_info(instance, ctrl_info)) {
4164
4165 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
94cd65dd
SS		 4166 le16_to_cpu(ctrl_info->max_strips_per_io);
4167 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
c4a3e0a5 4168
14faea9f 4169 tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2);
404a8a1a
SS		 4170
4171 /*Check whether controller is iMR or MR */
4172 if (ctrl_info->memory_size) {
4173 instance->is_imr = 0;
4174 dev_info(&instance->pdev->dev, "Controller type: MR,"
4175 "Memory size is: %dMB\n",
94cd65dd 4176 le16_to_cpu(ctrl_info->memory_size));
404a8a1a
SS		 4177 } else {
4178 instance->is_imr = 1;
4179 dev_info(&instance->pdev->dev,
4180 "Controller type: iMR\n");
4181 }
94cd65dd
SS		 4182 /* OnOffProperties are converted into CPU arch*/
4183 le32_to_cpus((u32 *)&ctrl_info->properties.OnOffProperties);
39a98554 4184 instance->disableOnlineCtrlReset =
4185 ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset;
94cd65dd
SS		 4186 /* adapterOperations2 are converted into CPU arch*/
4187 le32_to_cpus((u32 *)&ctrl_info->adapterOperations2);
229fe47c 4188 instance->mpio = ctrl_info->adapterOperations2.mpio;
bc93d425
SS		 4189 instance->UnevenSpanSupport =
4190 ctrl_info->adapterOperations2.supportUnevenSpans;
4191 if (instance->UnevenSpanSupport) {
4192 struct fusion_context *fusion = instance->ctrl_context;
4193 dev_info(&instance->pdev->dev, "FW supports: "
4194 "UnevenSpanSupport=%x\n", instance->UnevenSpanSupport);
4195 if (MR_ValidateMapInfo(instance))
4196 fusion->fast_path_io = 1;
4197 else
4198 fusion->fast_path_io = 0;
4199
4200 }
229fe47c 4201 if (ctrl_info->host_interface.SRIOV) {
4202 if (!ctrl_info->adapterOperations2.activePassive)
4203 instance->PlasmaFW111 = 1;
4204
4205 if (!instance->PlasmaFW111)
4206 instance->requestorId =
4207 ctrl_info->iov.requestorId;
4208 else {
4209 iovPtr = (struct IOV_111 *)((unsigned char *)ctrl_info + IOV_111_OFFSET);
4210 instance->requestorId = iovPtr->requestorId;
4211 }
4212 printk(KERN_WARNING "megaraid_sas: I am VF "
4213 "requestorId %d\n", instance->requestorId);
4214 }
14faea9f 4215 }
14faea9f 4216 instance->max_sectors_per_req = instance->max_num_sge *
4217 PAGE_SIZE / 512;
4218 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
4219 instance->max_sectors_per_req = tmp_sectors;
c4a3e0a5
BS		 4220
4221 kfree(ctrl_info);
4222
c5daa6a9 4223 /* Check for valid throttlequeuedepth module parameter */
404a8a1a 4224 if (instance->is_imr) {
c5daa6a9 4225 if (throttlequeuedepth > (instance->max_fw_cmds -
4226 MEGASAS_SKINNY_INT_CMDS))
4227 instance->throttlequeuedepth =
4228 MEGASAS_THROTTLE_QUEUE_DEPTH;
4229 else
4230 instance->throttlequeuedepth = throttlequeuedepth;
4231 } else {
4232 if (throttlequeuedepth > (instance->max_fw_cmds -
4233 MEGASAS_INT_CMDS))
4234 instance->throttlequeuedepth =
4235 MEGASAS_THROTTLE_QUEUE_DEPTH;
4236 else
4237 instance->throttlequeuedepth = throttlequeuedepth;
4238 }
4239
5d018ad0
SP		 4240 /*
4241 * Setup tasklet for cmd completion
4242 */
4243
f86c5424 4244 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
ad84db2e 4245 (unsigned long)instance);
4246
229fe47c 4247 /* Launch SR-IOV heartbeat timer */
4248 if (instance->requestorId) {
4249 if (!megasas_sriov_start_heartbeat(instance, 1))
4250 megasas_start_timer(instance,
4251 &instance->sriov_heartbeat_timer,
4252 megasas_sriov_heartbeat_handler,
4253 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
4254 else
4255 instance->skip_heartbeat_timer_del = 1;
4256 }
4257
c4a3e0a5
BS		 4258 return 0;
4259
eb1b1237 4260fail_init_adapter:
cd50ba8e 4261fail_ready_state:
c4a3e0a5
BS		 4262 iounmap(instance->reg_set);
4263
4264 fail_ioremap:
b6d5d880 4265 pci_release_selected_regions(instance->pdev, instance->bar);
c4a3e0a5
BS		 4266
4267 return -EINVAL;
4268}
4269
4270/**
4271 * megasas_release_mfi - Reverses the FW initialization
4272 * @intance: Adapter soft state
4273 */
4274static void megasas_release_mfi(struct megasas_instance *instance)
4275{
9c915a8c 4276 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
c4a3e0a5 4277
9c915a8c 4278 if (instance->reply_queue)
4279 pci_free_consistent(instance->pdev, reply_q_sz,
c4a3e0a5
BS		 4280 instance->reply_queue, instance->reply_queue_h);
4281
4282 megasas_free_cmds(instance);
4283
4284 iounmap(instance->reg_set);
4285
b6d5d880 4286 pci_release_selected_regions(instance->pdev, instance->bar);
c4a3e0a5
BS		 4287}
4288
4289/**
4290 * megasas_get_seq_num - Gets latest event sequence numbers
4291 * @instance: Adapter soft state
4292 * @eli: FW event log sequence numbers information
4293 *
4294 * FW maintains a log of all events in a non-volatile area. Upper layers would
4295 * usually find out the latest sequence number of the events, the seq number at
4296 * the boot etc. They would "read" all the events below the latest seq number
4297 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
4298 * number), they would subsribe to AEN (asynchronous event notification) and
4299 * wait for the events to happen.
4300 */
4301static int
4302megasas_get_seq_num(struct megasas_instance *instance,
4303 struct megasas_evt_log_info *eli)
4304{
4305 struct megasas_cmd *cmd;
4306 struct megasas_dcmd_frame *dcmd;
4307 struct megasas_evt_log_info *el_info;
4308 dma_addr_t el_info_h = 0;
4309
4310 cmd = megasas_get_cmd(instance);
4311
4312 if (!cmd) {
4313 return -ENOMEM;
4314 }
4315
4316 dcmd = &cmd->frame->dcmd;
4317 el_info = pci_alloc_consistent(instance->pdev,
4318 sizeof(struct megasas_evt_log_info),
4319 &el_info_h);
4320
4321 if (!el_info) {
4322 megasas_return_cmd(instance, cmd);
4323 return -ENOMEM;
4324 }
4325
4326 memset(el_info, 0, sizeof(*el_info));
4327 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4328
4329 dcmd->cmd = MFI_CMD_DCMD;
4330 dcmd->cmd_status = 0x0;
4331 dcmd->sge_count = 1;
94cd65dd 4332 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
c4a3e0a5 4333 dcmd->timeout = 0;
780a3762 4334 dcmd->pad_0 = 0;
94cd65dd
SS		 4335 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
4336 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
4337 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(el_info_h);
4338 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_log_info));
c4a3e0a5 4339
cfbe7554
SS		 4340 if (megasas_issue_blocked_cmd(instance, cmd, 30))
4341 dev_err(&instance->pdev->dev, "Command timedout"
4342 "from %s\n", __func__);
4343 else {
4344 /*
4345 * Copy the data back into callers buffer
4346 */
4347 eli->newest_seq_num = le32_to_cpu(el_info->newest_seq_num);
4348 eli->oldest_seq_num = le32_to_cpu(el_info->oldest_seq_num);
4349 eli->clear_seq_num = le32_to_cpu(el_info->clear_seq_num);
4350 eli->shutdown_seq_num = le32_to_cpu(el_info->shutdown_seq_num);
4351 eli->boot_seq_num = le32_to_cpu(el_info->boot_seq_num);
4352 }
c4a3e0a5
BS		 4353
4354 pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info),
4355 el_info, el_info_h);
4356
4357 megasas_return_cmd(instance, cmd);
4358
4359 return 0;
4360}
4361
4362/**
4363 * megasas_register_aen - Registers for asynchronous event notification
4364 * @instance: Adapter soft state
4365 * @seq_num: The starting sequence number
4366 * @class_locale: Class of the event
4367 *
4368 * This function subscribes for AEN for events beyond the @seq_num. It requests
4369 * to be notified if and only if the event is of type @class_locale
4370 */
4371static int
4372megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
4373 u32 class_locale_word)
4374{
4375 int ret_val;
4376 struct megasas_cmd *cmd;
4377 struct megasas_dcmd_frame *dcmd;
4378 union megasas_evt_class_locale curr_aen;
4379 union megasas_evt_class_locale prev_aen;
4380
4381 /*
4382 * If there an AEN pending already (aen_cmd), check if the
4383 * class_locale of that pending AEN is inclusive of the new
4384 * AEN request we currently have. If it is, then we don't have
4385 * to do anything. In other words, whichever events the current
4386 * AEN request is subscribing to, have already been subscribed
4387 * to.
4388 *
4389 * If the old_cmd is _not_ inclusive, then we have to abort
4390 * that command, form a class_locale that is superset of both
4391 * old and current and re-issue to the FW
4392 */
4393
4394 curr_aen.word = class_locale_word;
4395
4396 if (instance->aen_cmd) {
4397
4398 prev_aen.word = instance->aen_cmd->frame->dcmd.mbox.w[1];
94cd65dd 4399 prev_aen.members.locale = le16_to_cpu(prev_aen.members.locale);
c4a3e0a5
BS		 4400
4401 /*
4402 * A class whose enum value is smaller is inclusive of all
4403 * higher values. If a PROGRESS (= -1) was previously
4404 * registered, then a new registration requests for higher
4405 * classes need not be sent to FW. They are automatically
4406 * included.
4407 *
4408 * Locale numbers don't have such hierarchy. They are bitmap
4409 * values
4410 */
4411 if ((prev_aen.members.class <= curr_aen.members.class) &&
3993a862 4412 !((prev_aen.members.locale & curr_aen.members.locale) ^
c4a3e0a5
BS		 4413 curr_aen.members.locale)) {
4414 /*
4415 * Previously issued event registration includes
4416 * current request. Nothing to do.
4417 */
4418 return 0;
4419 } else {
3993a862 4420 curr_aen.members.locale |= prev_aen.members.locale;
c4a3e0a5
BS		 4421
4422 if (prev_aen.members.class < curr_aen.members.class)
4423 curr_aen.members.class = prev_aen.members.class;
4424
4425 instance->aen_cmd->abort_aen = 1;
4426 ret_val = megasas_issue_blocked_abort_cmd(instance,
4427 instance->
cfbe7554 4428 aen_cmd, 30);
c4a3e0a5
BS		 4429
4430 if (ret_val) {
4431 printk(KERN_DEBUG "megasas: Failed to abort "
4432 "previous AEN command\n");
4433 return ret_val;
4434 }
4435 }
4436 }
4437
4438 cmd = megasas_get_cmd(instance);
4439
4440 if (!cmd)
4441 return -ENOMEM;
4442
4443 dcmd = &cmd->frame->dcmd;
4444
4445 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
4446
4447 /*
4448 * Prepare DCMD for aen registration
4449 */
4450 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4451
4452 dcmd->cmd = MFI_CMD_DCMD;
4453 dcmd->cmd_status = 0x0;
4454 dcmd->sge_count = 1;
94cd65dd 4455 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
c4a3e0a5 4456 dcmd->timeout = 0;
780a3762 4457 dcmd->pad_0 = 0;
94cd65dd
SS		 4458 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
4459 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
4460 dcmd->mbox.w[0] = cpu_to_le32(seq_num);
39a98554 4461 instance->last_seq_num = seq_num;
94cd65dd
SS		 4462 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
4463 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->evt_detail_h);
4464 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_detail));
c4a3e0a5 4465
f4c9a131
YB		 4466 if (instance->aen_cmd != NULL) {
4467 megasas_return_cmd(instance, cmd);
4468 return 0;
4469 }
4470
c4a3e0a5
BS		 4471 /*
4472 * Store reference to the cmd used to register for AEN. When an
4473 * application wants us to register for AEN, we have to abort this
4474 * cmd and re-register with a new EVENT LOCALE supplied by that app
4475 */
4476 instance->aen_cmd = cmd;
4477
4478 /*
4479 * Issue the aen registration frame
4480 */
9c915a8c 4481 instance->instancet->issue_dcmd(instance, cmd);
c4a3e0a5
BS		 4482
4483 return 0;
4484}
4485
4486/**
4487 * megasas_start_aen - Subscribes to AEN during driver load time
4488 * @instance: Adapter soft state
4489 */
4490static int megasas_start_aen(struct megasas_instance *instance)
4491{
4492 struct megasas_evt_log_info eli;
4493 union megasas_evt_class_locale class_locale;
4494
4495 /*
4496 * Get the latest sequence number from FW
4497 */
4498 memset(&eli, 0, sizeof(eli));
4499
4500 if (megasas_get_seq_num(instance, &eli))
4501 return -1;
4502
4503 /*
4504 * Register AEN with FW for latest sequence number plus 1
4505 */
4506 class_locale.members.reserved = 0;
4507 class_locale.members.locale = MR_EVT_LOCALE_ALL;
4508 class_locale.members.class = MR_EVT_CLASS_DEBUG;
4509
94cd65dd 4510 return megasas_register_aen(instance,
3993a862 4511 eli.newest_seq_num + 1,
94cd65dd 4512 class_locale.word);
c4a3e0a5
BS		 4513}
4514
4515/**
4516 * megasas_io_attach - Attaches this driver to SCSI mid-layer
4517 * @instance: Adapter soft state
4518 */
4519static int megasas_io_attach(struct megasas_instance *instance)
4520{
4521 struct Scsi_Host *host = instance->host;
4522
4523 /*
4524 * Export parameters required by SCSI mid-layer
4525 */
4526 host->irq = instance->pdev->irq;
4527 host->unique_id = instance->unique_id;
404a8a1a 4528 if (instance->is_imr) {
7bebf5c7
YB		 4529 host->can_queue =
4530 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
4531 } else
4532 host->can_queue =
4533 instance->max_fw_cmds - MEGASAS_INT_CMDS;
c4a3e0a5
BS		 4534 host->this_id = instance->init_id;
4535 host->sg_tablesize = instance->max_num_sge;
42a8d2b3 4536
4537 if (instance->fw_support_ieee)
4538 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
4539
1fd10685
YB		 4540 /*
4541 * Check if the module parameter value for max_sectors can be used
4542 */
4543 if (max_sectors && max_sectors < instance->max_sectors_per_req)
4544 instance->max_sectors_per_req = max_sectors;
4545 else {
4546 if (max_sectors) {
4547 if (((instance->pdev->device ==
4548 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
4549 (instance->pdev->device ==
4550 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
4551 (max_sectors <= MEGASAS_MAX_SECTORS)) {
4552 instance->max_sectors_per_req = max_sectors;
4553 } else {
4554 printk(KERN_INFO "megasas: max_sectors should be > 0"
4555 "and <= %d (or < 1MB for GEN2 controller)\n",
4556 instance->max_sectors_per_req);
4557 }
4558 }
4559 }
4560
c4a3e0a5 4561 host->max_sectors = instance->max_sectors_per_req;
9c915a8c 4562 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
c4a3e0a5
BS		 4563 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
4564 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
4565 host->max_lun = MEGASAS_MAX_LUN;
122da302 4566 host->max_cmd_len = 16;
c4a3e0a5 4567
9c915a8c 4568 /* Fusion only supports host reset */
36807e67 4569 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
229fe47c 4570 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
21d3c710
SS		 4571 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
4572 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
9c915a8c 4573 host->hostt->eh_device_reset_handler = NULL;
4574 host->hostt->eh_bus_reset_handler = NULL;
4575 }
4576
c4a3e0a5
BS		 4577 /*
4578 * Notify the mid-layer about the new controller
4579 */
4580 if (scsi_add_host(host, &instance->pdev->dev)) {
4581 printk(KERN_DEBUG "megasas: scsi_add_host failed\n");
4582 return -ENODEV;
4583 }
4584
4585 /*
4586 * Trigger SCSI to scan our drives
4587 */
4588 scsi_scan_host(host);
4589 return 0;
4590}
4591
31ea7088 4592static int
4593megasas_set_dma_mask(struct pci_dev *pdev)
4594{
4595 /*
4596 * All our contollers are capable of performing 64-bit DMA
4597 */
4598 if (IS_DMA64) {
6a35528a 4599 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
31ea7088 4600
284901a9 4601 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
31ea7088 4602 goto fail_set_dma_mask;
4603 }
4604 } else {
284901a9 4605 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
31ea7088 4606 goto fail_set_dma_mask;
4607 }
46de63e2
SS		 4608 /*
4609 * Ensure that all data structures are allocated in 32-bit
4610 * memory.
4611 */
4612 if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) {
4613 /* Try 32bit DMA mask and 32 bit Consistent dma mask */
4614 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
4615 && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
4616 dev_info(&pdev->dev, "set 32bit DMA mask"
4617 "and 32 bit consistent mask\n");
4618 else
4619 goto fail_set_dma_mask;
4620 }
94cd65dd 4621
31ea7088 4622 return 0;
4623
4624fail_set_dma_mask:
4625 return 1;
4626}
4627
c4a3e0a5
BS		 4628/**
4629 * megasas_probe_one - PCI hotplug entry point
4630 * @pdev: PCI device structure
0d49016b 4631 * @id: PCI ids of supported hotplugged adapter
c4a3e0a5 4632 */
6f039790
GKH		 4633static int megasas_probe_one(struct pci_dev *pdev,
4634 const struct pci_device_id *id)
c4a3e0a5 4635{
8058a169 4636 int rval, pos, i, j, cpu;
c4a3e0a5
BS		 4637 struct Scsi_Host *host;
4638 struct megasas_instance *instance;
66192dfe 4639 u16 control = 0;
4640
4641 /* Reset MSI-X in the kdump kernel */
4642 if (reset_devices) {
4643 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
4644 if (pos) {
99369065 4645 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
66192dfe 4646 &control);
4647 if (control & PCI_MSIX_FLAGS_ENABLE) {
4648 dev_info(&pdev->dev, "resetting MSI-X\n");
4649 pci_write_config_word(pdev,
99369065 4650 pos + PCI_MSIX_FLAGS,
66192dfe 4651 control &
4652 ~PCI_MSIX_FLAGS_ENABLE);
4653 }
4654 }
4655 }
c4a3e0a5
BS		 4656
4657 /*
4658 * Announce PCI information
4659 */
4660 printk(KERN_INFO "megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ",
4661 pdev->vendor, pdev->device, pdev->subsystem_vendor,
4662 pdev->subsystem_device);
4663
4664 printk("bus %d:slot %d:func %d\n",
4665 pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));
4666
4667 /*
4668 * PCI prepping: enable device set bus mastering and dma mask
4669 */
aeab3fd7 4670 rval = pci_enable_device_mem(pdev);
c4a3e0a5
BS		 4671
4672 if (rval) {
4673 return rval;
4674 }
4675
4676 pci_set_master(pdev);
4677
31ea7088 4678 if (megasas_set_dma_mask(pdev))
4679 goto fail_set_dma_mask;
c4a3e0a5
BS		 4680
4681 host = scsi_host_alloc(&megasas_template,
4682 sizeof(struct megasas_instance));
4683
4684 if (!host) {
4685 printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n");
4686 goto fail_alloc_instance;
4687 }
4688
4689 instance = (struct megasas_instance *)host->hostdata;
4690 memset(instance, 0, sizeof(*instance));
39a98554 4691 atomic_set( &instance->fw_reset_no_pci_access, 0 );
9c915a8c 4692 instance->pdev = pdev;
c4a3e0a5 4693
9c915a8c 4694 switch (instance->pdev->device) {
4695 case PCI_DEVICE_ID_LSI_FUSION:
229fe47c 4696 case PCI_DEVICE_ID_LSI_PLASMA:
36807e67 4697 case PCI_DEVICE_ID_LSI_INVADER:
21d3c710 4698 case PCI_DEVICE_ID_LSI_FURY:
9c915a8c 4699 {
4700 struct fusion_context *fusion;
4701
4702 instance->ctrl_context =
4703 kzalloc(sizeof(struct fusion_context), GFP_KERNEL);
4704 if (!instance->ctrl_context) {
4705 printk(KERN_DEBUG "megasas: Failed to allocate "
4706 "memory for Fusion context info\n");
4707 goto fail_alloc_dma_buf;
4708 }
4709 fusion = instance->ctrl_context;
4710 INIT_LIST_HEAD(&fusion->cmd_pool);
4711 spin_lock_init(&fusion->cmd_pool_lock);
4712 }
4713 break;
4714 default: /* For all other supported controllers */
4715
4716 instance->producer =
4717 pci_alloc_consistent(pdev, sizeof(u32),
4718 &instance->producer_h);
4719 instance->consumer =
4720 pci_alloc_consistent(pdev, sizeof(u32),
4721 &instance->consumer_h);
4722
4723 if (!instance->producer || !instance->consumer) {
4724 printk(KERN_DEBUG "megasas: Failed to allocate"
4725 "memory for producer, consumer\n");
4726 goto fail_alloc_dma_buf;
4727 }
c4a3e0a5 4728
9c915a8c 4729 *instance->producer = 0;
4730 *instance->consumer = 0;
4731 break;
c4a3e0a5
BS		 4732 }
4733
c3518837 4734 megasas_poll_wait_aen = 0;
f4c9a131 4735 instance->flag_ieee = 0;
7e8a75f4 4736 instance->ev = NULL;
39a98554 4737 instance->issuepend_done = 1;
4738 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
404a8a1a 4739 instance->is_imr = 0;
39a98554 4740 megasas_poll_wait_aen = 0;
c4a3e0a5
BS		 4741
4742 instance->evt_detail = pci_alloc_consistent(pdev,
4743 sizeof(struct
4744 megasas_evt_detail),
4745 &instance->evt_detail_h);
4746
4747 if (!instance->evt_detail) {
4748 printk(KERN_DEBUG "megasas: Failed to allocate memory for "
4749 "event detail structure\n");
4750 goto fail_alloc_dma_buf;
4751 }
4752
4753 /*
4754 * Initialize locks and queues
4755 */
4756 INIT_LIST_HEAD(&instance->cmd_pool);
39a98554 4757 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
c4a3e0a5 4758
e4a082c7
SP		 4759 atomic_set(&instance->fw_outstanding,0);
4760
c4a3e0a5
BS		 4761 init_waitqueue_head(&instance->int_cmd_wait_q);
4762 init_waitqueue_head(&instance->abort_cmd_wait_q);
4763
4764 spin_lock_init(&instance->cmd_pool_lock);
39a98554 4765 spin_lock_init(&instance->hba_lock);
7343eb65 4766 spin_lock_init(&instance->completion_lock);
c4a3e0a5 4767
e5a69e27 4768 mutex_init(&instance->aen_mutex);
9c915a8c 4769 mutex_init(&instance->reset_mutex);
c4a3e0a5
BS		 4770
4771 /*
4772 * Initialize PCI related and misc parameters
4773 */
c4a3e0a5
BS		 4774 instance->host = host;
4775 instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
4776 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
4777
7bebf5c7
YB		 4778 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4779 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
f4c9a131 4780 instance->flag_ieee = 1;
7bebf5c7
YB		 4781 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
4782 } else
4783 sema_init(&instance->ioctl_sem, MEGASAS_INT_CMDS);
4784
658dcedb 4785 megasas_dbg_lvl = 0;
05e9ebbe 4786 instance->flag = 0;
0c79e681 4787 instance->unload = 1;
05e9ebbe 4788 instance->last_time = 0;
39a98554 4789 instance->disableOnlineCtrlReset = 1;
bc93d425 4790 instance->UnevenSpanSupport = 0;
39a98554 4791
36807e67 4792 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
229fe47c 4793 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
21d3c710
SS		 4794 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
4795 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
9c915a8c 4796 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
4797 else
4798 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
658dcedb 4799
0a77066a 4800 /*
4801 * Initialize MFI Firmware
4802 */
4803 if (megasas_init_fw(instance))
4804 goto fail_init_mfi;
4805
229fe47c 4806 if (instance->requestorId) {
4807 if (instance->PlasmaFW111) {
4808 instance->vf_affiliation_111 =
4809 pci_alloc_consistent(pdev, sizeof(struct MR_LD_VF_AFFILIATION_111),
4810 &instance->vf_affiliation_111_h);
4811 if (!instance->vf_affiliation_111)
4812 printk(KERN_WARNING "megasas: Can't allocate "
4813 "memory for VF affiliation buffer\n");
4814 } else {
4815 instance->vf_affiliation =
4816 pci_alloc_consistent(pdev,
4817 (MAX_LOGICAL_DRIVES + 1) *
4818 sizeof(struct MR_LD_VF_AFFILIATION),
4819 &instance->vf_affiliation_h);
4820 if (!instance->vf_affiliation)
4821 printk(KERN_WARNING "megasas: Can't allocate "
4822 "memory for VF affiliation buffer\n");
4823 }
4824 }
4825
d46a3ad6 4826retry_irq_register:
c4a3e0a5
BS		 4827 /*
4828 * Register IRQ
4829 */
c8e858fe 4830 if (instance->msix_vectors) {
8058a169
SS		 4831 cpu = cpumask_first(cpu_online_mask);
4832 for (i = 0; i < instance->msix_vectors; i++) {
c8e858fe 4833 instance->irq_context[i].instance = instance;
4834 instance->irq_context[i].MSIxIndex = i;
4835 if (request_irq(instance->msixentry[i].vector,
4836 instance->instancet->service_isr, 0,
4837 "megasas",
4838 &instance->irq_context[i])) {
4839 printk(KERN_DEBUG "megasas: Failed to "
4840 "register IRQ for vector %d.\n", i);
8058a169
SS		 4841 for (j = 0; j < i; j++) {
4842 irq_set_affinity_hint(
4843 instance->msixentry[j].vector, NULL);
c8e858fe 4844 free_irq(
4845 instance->msixentry[j].vector,
4846 &instance->irq_context[j]);
8058a169 4847 }
d46a3ad6
SS		 4848 /* Retry irq register for IO_APIC */
4849 instance->msix_vectors = 0;
4850 goto retry_irq_register;
c8e858fe 4851 }
8058a169
SS		 4852 if (irq_set_affinity_hint(instance->msixentry[i].vector,
4853 get_cpu_mask(cpu)))
4854 dev_err(&instance->pdev->dev, "Error setting"
4855 "affinity hint for cpu %d\n", cpu);
4856 cpu = cpumask_next(cpu, cpu_online_mask);
c8e858fe 4857 }
4858 } else {
4859 instance->irq_context[0].instance = instance;
4860 instance->irq_context[0].MSIxIndex = 0;
4861 if (request_irq(pdev->irq, instance->instancet->service_isr,
4862 IRQF_SHARED, "megasas",
4863 &instance->irq_context[0])) {
4864 printk(KERN_DEBUG "megasas: Failed to register IRQ\n");
4865 goto fail_irq;
4866 }
c4a3e0a5
BS		 4867 }
4868
d46a3ad6 4869 instance->instancet->enable_intr(instance);
c4a3e0a5
BS		 4870
4871 /*
4872 * Store instance in PCI softstate
4873 */
4874 pci_set_drvdata(pdev, instance);
4875
4876 /*
4877 * Add this controller to megasas_mgmt_info structure so that it
4878 * can be exported to management applications
4879 */
4880 megasas_mgmt_info.count++;
4881 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
4882 megasas_mgmt_info.max_index++;
4883
541f90b7 4884 /*
4885 * Register with SCSI mid-layer
4886 */
4887 if (megasas_io_attach(instance))
4888 goto fail_io_attach;
4889
4890 instance->unload = 0;
4891
c4a3e0a5
BS		 4892 /*
4893 * Initiate AEN (Asynchronous Event Notification)
4894 */
4895 if (megasas_start_aen(instance)) {
4896 printk(KERN_DEBUG "megasas: start aen failed\n");
4897 goto fail_start_aen;
4898 }
4899
c4a3e0a5
BS		 4900 return 0;
4901
4902 fail_start_aen:
4903 fail_io_attach:
4904 megasas_mgmt_info.count--;
4905 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
4906 megasas_mgmt_info.max_index--;
4907
d46a3ad6 4908 instance->instancet->disable_intr(instance);
c8e858fe 4909 if (instance->msix_vectors)
8058a169
SS		 4910 for (i = 0; i < instance->msix_vectors; i++) {
4911 irq_set_affinity_hint(
4912 instance->msixentry[i].vector, NULL);
c8e858fe 4913 free_irq(instance->msixentry[i].vector,
4914 &instance->irq_context[i]);
8058a169 4915 }
c8e858fe 4916 else
4917 free_irq(instance->pdev->irq, &instance->irq_context[0]);
eb1b1237 4918fail_irq:
36807e67 4919 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
229fe47c 4920 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
21d3c710
SS		 4921 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
4922 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
eb1b1237 4923 megasas_release_fusion(instance);
4924 else
4925 megasas_release_mfi(instance);
c4a3e0a5 4926 fail_init_mfi:
c8e858fe 4927 if (instance->msix_vectors)
0a77066a 4928 pci_disable_msix(instance->pdev);
c4a3e0a5
BS		 4929 fail_alloc_dma_buf:
4930 if (instance->evt_detail)
4931 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
4932 instance->evt_detail,
4933 instance->evt_detail_h);
4934
eb1b1237 4935 if (instance->producer)
c4a3e0a5
BS		 4936 pci_free_consistent(pdev, sizeof(u32), instance->producer,
4937 instance->producer_h);
4938 if (instance->consumer)
4939 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
4940 instance->consumer_h);
4941 scsi_host_put(host);
4942
4943 fail_alloc_instance:
4944 fail_set_dma_mask:
4945 pci_disable_device(pdev);
4946
4947 return -ENODEV;
4948}
4949
4950/**
4951 * megasas_flush_cache - Requests FW to flush all its caches
4952 * @instance: Adapter soft state
4953 */
4954static void megasas_flush_cache(struct megasas_instance *instance)
4955{
4956 struct megasas_cmd *cmd;
4957 struct megasas_dcmd_frame *dcmd;
4958
39a98554 4959 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
4960 return;
4961
c4a3e0a5
BS		 4962 cmd = megasas_get_cmd(instance);
4963
4964 if (!cmd)
4965 return;
4966
4967 dcmd = &cmd->frame->dcmd;
4968
4969 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4970
4971 dcmd->cmd = MFI_CMD_DCMD;
4972 dcmd->cmd_status = 0x0;
4973 dcmd->sge_count = 0;
94cd65dd 4974 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
c4a3e0a5 4975 dcmd->timeout = 0;
780a3762 4976 dcmd->pad_0 = 0;
c4a3e0a5 4977 dcmd->data_xfer_len = 0;
94cd65dd 4978 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
c4a3e0a5
BS		 4979 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
4980
cfbe7554
SS		 4981 if (megasas_issue_blocked_cmd(instance, cmd, 30))
4982 dev_err(&instance->pdev->dev, "Command timedout"
4983 " from %s\n", __func__);
c4a3e0a5
BS		 4984
4985 megasas_return_cmd(instance, cmd);
4986
4987 return;
4988}
4989
4990/**
4991 * megasas_shutdown_controller - Instructs FW to shutdown the controller
4992 * @instance: Adapter soft state
31ea7088 4993 * @opcode: Shutdown/Hibernate
c4a3e0a5 4994 */
31ea7088 4995static void megasas_shutdown_controller(struct megasas_instance *instance,
4996 u32 opcode)
c4a3e0a5
BS		 4997{
4998 struct megasas_cmd *cmd;
4999 struct megasas_dcmd_frame *dcmd;
5000
39a98554 5001 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
5002 return;
5003
c4a3e0a5
BS		 5004 cmd = megasas_get_cmd(instance);
5005
5006 if (!cmd)
5007 return;
5008
5009 if (instance->aen_cmd)
cfbe7554
SS		 5010 megasas_issue_blocked_abort_cmd(instance,
5011 instance->aen_cmd, 30);
9c915a8c 5012 if (instance->map_update_cmd)
5013 megasas_issue_blocked_abort_cmd(instance,
cfbe7554 5014 instance->map_update_cmd, 30);
c4a3e0a5
BS		 5015 dcmd = &cmd->frame->dcmd;
5016
5017 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5018
5019 dcmd->cmd = MFI_CMD_DCMD;
5020 dcmd->cmd_status = 0x0;
5021 dcmd->sge_count = 0;
94cd65dd 5022 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
c4a3e0a5 5023 dcmd->timeout = 0;
780a3762 5024 dcmd->pad_0 = 0;
c4a3e0a5 5025 dcmd->data_xfer_len = 0;
94cd65dd 5026 dcmd->opcode = cpu_to_le32(opcode);
c4a3e0a5 5027
cfbe7554
SS		 5028 if (megasas_issue_blocked_cmd(instance, cmd, 30))
5029 dev_err(&instance->pdev->dev, "Command timedout"
5030 "from %s\n", __func__);
c4a3e0a5
BS		 5031
5032 megasas_return_cmd(instance, cmd);
5033
5034 return;
5035}
5036
33139b21 5037#ifdef CONFIG_PM
31ea7088 5038/**
ad84db2e 5039 * megasas_suspend - driver suspend entry point
5040 * @pdev: PCI device structure
31ea7088 5041 * @state: PCI power state to suspend routine
5042 */
33139b21 5043static int
31ea7088 5044megasas_suspend(struct pci_dev *pdev, pm_message_t state)
5045{
5046 struct Scsi_Host *host;
5047 struct megasas_instance *instance;
c8e858fe 5048 int i;
31ea7088 5049
5050 instance = pci_get_drvdata(pdev);
5051 host = instance->host;
0c79e681 5052 instance->unload = 1;
31ea7088 5053
229fe47c 5054 /* Shutdown SR-IOV heartbeat timer */
5055 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
5056 del_timer_sync(&instance->sriov_heartbeat_timer);
5057
31ea7088 5058 megasas_flush_cache(instance);
5059 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
7e8a75f4
YB		 5060
5061 /* cancel the delayed work if this work still in queue */
5062 if (instance->ev != NULL) {
5063 struct megasas_aen_event *ev = instance->ev;
c1d390d8 5064 cancel_delayed_work_sync(&ev->hotplug_work);
7e8a75f4
YB		 5065 instance->ev = NULL;
5066 }
5067
31ea7088 5068 tasklet_kill(&instance->isr_tasklet);
5069
5070 pci_set_drvdata(instance->pdev, instance);
d46a3ad6 5071 instance->instancet->disable_intr(instance);
c8e858fe 5072
5073 if (instance->msix_vectors)
8058a169
SS		 5074 for (i = 0; i < instance->msix_vectors; i++) {
5075 irq_set_affinity_hint(
5076 instance->msixentry[i].vector, NULL);
c8e858fe 5077 free_irq(instance->msixentry[i].vector,
5078 &instance->irq_context[i]);
8058a169 5079 }
c8e858fe 5080 else
5081 free_irq(instance->pdev->irq, &instance->irq_context[0]);
5082 if (instance->msix_vectors)
80d9da98 5083 pci_disable_msix(instance->pdev);
31ea7088 5084
5085 pci_save_state(pdev);
5086 pci_disable_device(pdev);
5087
5088 pci_set_power_state(pdev, pci_choose_state(pdev, state));
5089
5090 return 0;
5091}
5092
5093/**
5094 * megasas_resume- driver resume entry point
5095 * @pdev: PCI device structure
5096 */
33139b21 5097static int
31ea7088 5098megasas_resume(struct pci_dev *pdev)
5099{
8058a169 5100 int rval, i, j, cpu;
31ea7088 5101 struct Scsi_Host *host;
5102 struct megasas_instance *instance;
5103
5104 instance = pci_get_drvdata(pdev);
5105 host = instance->host;
5106 pci_set_power_state(pdev, PCI_D0);
5107 pci_enable_wake(pdev, PCI_D0, 0);
5108 pci_restore_state(pdev);
5109
5110 /*
5111 * PCI prepping: enable device set bus mastering and dma mask
5112 */
aeab3fd7 5113 rval = pci_enable_device_mem(pdev);
31ea7088 5114
5115 if (rval) {
5116 printk(KERN_ERR "megasas: Enable device failed\n");
5117 return rval;
5118 }
5119
5120 pci_set_master(pdev);
5121
5122 if (megasas_set_dma_mask(pdev))
5123 goto fail_set_dma_mask;
5124
5125 /*
5126 * Initialize MFI Firmware
5127 */
5128
31ea7088 5129 atomic_set(&instance->fw_outstanding, 0);
5130
5131 /*
5132 * We expect the FW state to be READY
5133 */
058a8fac 5134 if (megasas_transition_to_ready(instance, 0))
31ea7088 5135 goto fail_ready_state;
5136
3f1abce4 5137 /* Now re-enable MSI-X */
c8e858fe 5138 if (instance->msix_vectors)
5139 pci_enable_msix(instance->pdev, instance->msixentry,
5140 instance->msix_vectors);
3f1abce4 5141
9c915a8c 5142 switch (instance->pdev->device) {
5143 case PCI_DEVICE_ID_LSI_FUSION:
229fe47c 5144 case PCI_DEVICE_ID_LSI_PLASMA:
36807e67 5145 case PCI_DEVICE_ID_LSI_INVADER:
21d3c710 5146 case PCI_DEVICE_ID_LSI_FURY:
9c915a8c 5147 {
5148 megasas_reset_reply_desc(instance);
5149 if (megasas_ioc_init_fusion(instance)) {
5150 megasas_free_cmds(instance);
5151 megasas_free_cmds_fusion(instance);
5152 goto fail_init_mfi;
5153 }
5154 if (!megasas_get_map_info(instance))
5155 megasas_sync_map_info(instance);
5156 }
5157 break;
5158 default:
5159 *instance->producer = 0;
5160 *instance->consumer = 0;
5161 if (megasas_issue_init_mfi(instance))
5162 goto fail_init_mfi;
5163 break;
5164 }
31ea7088 5165
9c915a8c 5166 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
5167 (unsigned long)instance);
31ea7088 5168
5169 /*
5170 * Register IRQ
5171 */
c8e858fe 5172 if (instance->msix_vectors) {
8058a169 5173 cpu = cpumask_first(cpu_online_mask);
c8e858fe 5174 for (i = 0 ; i < instance->msix_vectors; i++) {
5175 instance->irq_context[i].instance = instance;
5176 instance->irq_context[i].MSIxIndex = i;
5177 if (request_irq(instance->msixentry[i].vector,
5178 instance->instancet->service_isr, 0,
5179 "megasas",
5180 &instance->irq_context[i])) {
5181 printk(KERN_DEBUG "megasas: Failed to "
5182 "register IRQ for vector %d.\n", i);
8058a169
SS		 5183 for (j = 0; j < i; j++) {
5184 irq_set_affinity_hint(
5185 instance->msixentry[j].vector, NULL);
c8e858fe 5186 free_irq(
5187 instance->msixentry[j].vector,
5188 &instance->irq_context[j]);
8058a169 5189 }
c8e858fe 5190 goto fail_irq;
5191 }
8058a169
SS		 5192
5193 if (irq_set_affinity_hint(instance->msixentry[i].vector,
5194 get_cpu_mask(cpu)))
5195 dev_err(&instance->pdev->dev, "Error setting"
5196 "affinity hint for cpu %d\n", cpu);
5197 cpu = cpumask_next(cpu, cpu_online_mask);
c8e858fe 5198 }
5199 } else {
5200 instance->irq_context[0].instance = instance;
5201 instance->irq_context[0].MSIxIndex = 0;
5202 if (request_irq(pdev->irq, instance->instancet->service_isr,
5203 IRQF_SHARED, "megasas",
5204 &instance->irq_context[0])) {
5205 printk(KERN_DEBUG "megasas: Failed to register IRQ\n");
5206 goto fail_irq;
5207 }
31ea7088 5208 }
5209
229fe47c 5210 /* Re-launch SR-IOV heartbeat timer */
5211 if (instance->requestorId) {
5212 if (!megasas_sriov_start_heartbeat(instance, 0))
5213 megasas_start_timer(instance,
5214 &instance->sriov_heartbeat_timer,
5215 megasas_sriov_heartbeat_handler,
5216 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
5217 else
5218 instance->skip_heartbeat_timer_del = 1;
5219 }
5220
d46a3ad6 5221 instance->instancet->enable_intr(instance);
0c79e681
YB		 5222 instance->unload = 0;
5223
541f90b7 5224 /*
5225 * Initiate AEN (Asynchronous Event Notification)
5226 */
5227 if (megasas_start_aen(instance))
5228 printk(KERN_ERR "megasas: Start AEN failed\n");
5229
31ea7088 5230 return 0;
5231
5232fail_irq:
5233fail_init_mfi:
5234 if (instance->evt_detail)
5235 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
5236 instance->evt_detail,
5237 instance->evt_detail_h);
5238
5239 if (instance->producer)
5240 pci_free_consistent(pdev, sizeof(u32), instance->producer,
5241 instance->producer_h);
5242 if (instance->consumer)
5243 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
5244 instance->consumer_h);
5245 scsi_host_put(host);
5246
5247fail_set_dma_mask:
5248fail_ready_state:
5249
5250 pci_disable_device(pdev);
5251
5252 return -ENODEV;
5253}
33139b21
JS		 5254#else
5255#define megasas_suspend NULL
5256#define megasas_resume NULL
5257#endif
31ea7088 5258
c4a3e0a5
BS		 5259/**
5260 * megasas_detach_one - PCI hot"un"plug entry point
5261 * @pdev: PCI device structure
5262 */
6f039790 5263static void megasas_detach_one(struct pci_dev *pdev)
c4a3e0a5
BS		 5264{
5265 int i;
5266 struct Scsi_Host *host;
5267 struct megasas_instance *instance;
9c915a8c 5268 struct fusion_context *fusion;
c4a3e0a5
BS		 5269
5270 instance = pci_get_drvdata(pdev);
c3518837 5271 instance->unload = 1;
c4a3e0a5 5272 host = instance->host;
9c915a8c 5273 fusion = instance->ctrl_context;
c4a3e0a5 5274
229fe47c 5275 /* Shutdown SR-IOV heartbeat timer */
5276 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
5277 del_timer_sync(&instance->sriov_heartbeat_timer);
5278
c4a3e0a5
BS		 5279 scsi_remove_host(instance->host);
5280 megasas_flush_cache(instance);
31ea7088 5281 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7e8a75f4
YB		 5282
5283 /* cancel the delayed work if this work still in queue*/
5284 if (instance->ev != NULL) {
5285 struct megasas_aen_event *ev = instance->ev;
c1d390d8 5286 cancel_delayed_work_sync(&ev->hotplug_work);
7e8a75f4
YB		 5287 instance->ev = NULL;
5288 }
5289
cfbe7554
SS		 5290 /* cancel all wait events */
5291 wake_up_all(&instance->int_cmd_wait_q);
5292
5d018ad0 5293 tasklet_kill(&instance->isr_tasklet);
c4a3e0a5
BS		 5294
5295 /*
5296 * Take the instance off the instance array. Note that we will not
5297 * decrement the max_index. We let this array be sparse array
5298 */
5299 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
5300 if (megasas_mgmt_info.instance[i] == instance) {
5301 megasas_mgmt_info.count--;
5302 megasas_mgmt_info.instance[i] = NULL;
5303
5304 break;
5305 }
5306 }
5307
d46a3ad6 5308 instance->instancet->disable_intr(instance);
c4a3e0a5 5309
c8e858fe 5310 if (instance->msix_vectors)
8058a169
SS		 5311 for (i = 0; i < instance->msix_vectors; i++) {
5312 irq_set_affinity_hint(
5313 instance->msixentry[i].vector, NULL);
c8e858fe 5314 free_irq(instance->msixentry[i].vector,
5315 &instance->irq_context[i]);
8058a169 5316 }
c8e858fe 5317 else
5318 free_irq(instance->pdev->irq, &instance->irq_context[0]);
5319 if (instance->msix_vectors)
80d9da98 5320 pci_disable_msix(instance->pdev);
c4a3e0a5 5321
9c915a8c 5322 switch (instance->pdev->device) {
5323 case PCI_DEVICE_ID_LSI_FUSION:
229fe47c 5324 case PCI_DEVICE_ID_LSI_PLASMA:
36807e67 5325 case PCI_DEVICE_ID_LSI_INVADER:
21d3c710 5326 case PCI_DEVICE_ID_LSI_FURY:
9c915a8c 5327 megasas_release_fusion(instance);
5328 for (i = 0; i < 2 ; i++)
5329 if (fusion->ld_map[i])
5330 dma_free_coherent(&instance->pdev->dev,
5331 fusion->map_sz,
5332 fusion->ld_map[i],
5333 fusion->
5334 ld_map_phys[i]);
5335 kfree(instance->ctrl_context);
5336 break;
5337 default:
5338 megasas_release_mfi(instance);
9c915a8c 5339 pci_free_consistent(pdev, sizeof(u32),
5340 instance->producer,
5341 instance->producer_h);
5342 pci_free_consistent(pdev, sizeof(u32),
5343 instance->consumer,
5344 instance->consumer_h);
5345 break;
5346 }
c4a3e0a5 5347
105900d5
SS		 5348 if (instance->evt_detail)
5349 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
5350 instance->evt_detail, instance->evt_detail_h);
229fe47c 5351
5352 if (instance->vf_affiliation)
5353 pci_free_consistent(pdev, (MAX_LOGICAL_DRIVES + 1) *
5354 sizeof(struct MR_LD_VF_AFFILIATION),
5355 instance->vf_affiliation,
5356 instance->vf_affiliation_h);
5357
5358 if (instance->vf_affiliation_111)
5359 pci_free_consistent(pdev,
5360 sizeof(struct MR_LD_VF_AFFILIATION_111),
5361 instance->vf_affiliation_111,
5362 instance->vf_affiliation_111_h);
5363
5364 if (instance->hb_host_mem)
5365 pci_free_consistent(pdev, sizeof(struct MR_CTRL_HB_HOST_MEM),
5366 instance->hb_host_mem,
5367 instance->hb_host_mem_h);
5368
c4a3e0a5
BS		 5369 scsi_host_put(host);
5370
c4a3e0a5
BS		 5371 pci_disable_device(pdev);
5372
5373 return;
5374}
5375
5376/**
5377 * megasas_shutdown - Shutdown entry point
5378 * @device: Generic device structure
5379 */
5380static void megasas_shutdown(struct pci_dev *pdev)
5381{
c8e858fe 5382 int i;
c4a3e0a5 5383 struct megasas_instance *instance = pci_get_drvdata(pdev);
c8e858fe 5384
0c79e681 5385 instance->unload = 1;
c4a3e0a5 5386 megasas_flush_cache(instance);
530e6fc1 5387 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
d46a3ad6 5388 instance->instancet->disable_intr(instance);
c8e858fe 5389 if (instance->msix_vectors)
8058a169
SS		 5390 for (i = 0; i < instance->msix_vectors; i++) {
5391 irq_set_affinity_hint(
5392 instance->msixentry[i].vector, NULL);
c8e858fe 5393 free_irq(instance->msixentry[i].vector,
5394 &instance->irq_context[i]);
8058a169 5395 }
c8e858fe 5396 else
5397 free_irq(instance->pdev->irq, &instance->irq_context[0]);
5398 if (instance->msix_vectors)
46fd256e 5399 pci_disable_msix(instance->pdev);
c4a3e0a5
BS		 5400}
5401
5402/**
5403 * megasas_mgmt_open - char node "open" entry point
5404 */
5405static int megasas_mgmt_open(struct inode *inode, struct file *filep)
5406{
5407 /*
5408 * Allow only those users with admin rights
5409 */
5410 if (!capable(CAP_SYS_ADMIN))
5411 return -EACCES;
5412
5413 return 0;
5414}
5415
c4a3e0a5
BS		 5416/**
5417 * megasas_mgmt_fasync - Async notifier registration from applications
5418 *
5419 * This function adds the calling process to a driver global queue. When an
5420 * event occurs, SIGIO will be sent to all processes in this queue.
5421 */
5422static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
5423{
5424 int rc;
5425
0b950672 5426 mutex_lock(&megasas_async_queue_mutex);
c4a3e0a5
BS		 5427
5428 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
5429
0b950672 5430 mutex_unlock(&megasas_async_queue_mutex);
c4a3e0a5
BS		 5431
5432 if (rc >= 0) {
5433 /* For sanity check when we get ioctl */
5434 filep->private_data = filep;
5435 return 0;
5436 }
5437
5438 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
5439
5440 return rc;
5441}
5442
c3518837
YB		 5443/**
5444 * megasas_mgmt_poll - char node "poll" entry point
5445 * */
5446static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait)
5447{
5448 unsigned int mask;
5449 unsigned long flags;
5450 poll_wait(file, &megasas_poll_wait, wait);
5451 spin_lock_irqsave(&poll_aen_lock, flags);
5452 if (megasas_poll_wait_aen)
5453 mask = (POLLIN | POLLRDNORM);
5454 else
5455 mask = 0;
5456 spin_unlock_irqrestore(&poll_aen_lock, flags);
5457 return mask;
5458}
5459
c4a3e0a5
BS		 5460/**
5461 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
5462 * @instance: Adapter soft state
5463 * @argp: User's ioctl packet
5464 */
5465static int
5466megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
5467 struct megasas_iocpacket __user * user_ioc,
5468 struct megasas_iocpacket *ioc)
5469{
5470 struct megasas_sge32 *kern_sge32;
5471 struct megasas_cmd *cmd;
5472 void *kbuff_arr[MAX_IOCTL_SGE];
5473 dma_addr_t buf_handle = 0;
5474 int error = 0, i;
5475 void *sense = NULL;
5476 dma_addr_t sense_handle;
7b2519af 5477 unsigned long *sense_ptr;
c4a3e0a5
BS		 5478
5479 memset(kbuff_arr, 0, sizeof(kbuff_arr));
5480
5481 if (ioc->sge_count > MAX_IOCTL_SGE) {
5482 printk(KERN_DEBUG "megasas: SGE count [%d] > max limit [%d]\n",
5483 ioc->sge_count, MAX_IOCTL_SGE);
5484 return -EINVAL;
5485 }
5486
5487 cmd = megasas_get_cmd(instance);
5488 if (!cmd) {
5489 printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n");
5490 return -ENOMEM;
5491 }
5492
5493 /*
5494 * User's IOCTL packet has 2 frames (maximum). Copy those two
5495 * frames into our cmd's frames. cmd->frame's context will get
5496 * overwritten when we copy from user's frames. So set that value
5497 * alone separately
5498 */
5499 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
94cd65dd 5500 cmd->frame->hdr.context = cpu_to_le32(cmd->index);
c3518837 5501 cmd->frame->hdr.pad_0 = 0;
94cd65dd
SS		 5502 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_IEEE |
5503 MFI_FRAME_SGL64 |
5504 MFI_FRAME_SENSE64));
c4a3e0a5
BS		 5505
5506 /*
5507 * The management interface between applications and the fw uses
5508 * MFI frames. E.g, RAID configuration changes, LD property changes
5509 * etc are accomplishes through different kinds of MFI frames. The
5510 * driver needs to care only about substituting user buffers with
5511 * kernel buffers in SGLs. The location of SGL is embedded in the
5512 * struct iocpacket itself.
5513 */
5514 kern_sge32 = (struct megasas_sge32 *)
5515 ((unsigned long)cmd->frame + ioc->sgl_off);
5516
5517 /*
5518 * For each user buffer, create a mirror buffer and copy in
5519 */
5520 for (i = 0; i < ioc->sge_count; i++) {
98cb7e44
BM		 5521 if (!ioc->sgl[i].iov_len)
5522 continue;
5523
9f35fa8a 5524 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
c4a3e0a5 5525 ioc->sgl[i].iov_len,
9f35fa8a 5526 &buf_handle, GFP_KERNEL);
c4a3e0a5
BS		 5527 if (!kbuff_arr[i]) {
5528 printk(KERN_DEBUG "megasas: Failed to alloc "
5529 "kernel SGL buffer for IOCTL \n");
5530 error = -ENOMEM;
5531 goto out;
5532 }
5533
5534 /*
5535 * We don't change the dma_coherent_mask, so
5536 * pci_alloc_consistent only returns 32bit addresses
5537 */
94cd65dd
SS		 5538 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
5539 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
c4a3e0a5
BS		 5540
5541 /*
5542 * We created a kernel buffer corresponding to the
5543 * user buffer. Now copy in from the user buffer
5544 */
5545 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
5546 (u32) (ioc->sgl[i].iov_len))) {
5547 error = -EFAULT;
5548 goto out;
5549 }
5550 }
5551
5552 if (ioc->sense_len) {
9f35fa8a
SP		 5553 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
5554 &sense_handle, GFP_KERNEL);
c4a3e0a5
BS		 5555 if (!sense) {
5556 error = -ENOMEM;
5557 goto out;
5558 }
5559
5560 sense_ptr =
7b2519af 5561 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
94cd65dd 5562 *sense_ptr = cpu_to_le32(sense_handle);
c4a3e0a5
BS		 5563 }
5564
5565 /*
5566 * Set the sync_cmd flag so that the ISR knows not to complete this
5567 * cmd to the SCSI mid-layer
5568 */
5569 cmd->sync_cmd = 1;
cfbe7554 5570 megasas_issue_blocked_cmd(instance, cmd, 0);
c4a3e0a5
BS		 5571 cmd->sync_cmd = 0;
5572
5573 /*
5574 * copy out the kernel buffers to user buffers
5575 */
5576 for (i = 0; i < ioc->sge_count; i++) {
5577 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
5578 ioc->sgl[i].iov_len)) {
5579 error = -EFAULT;
5580 goto out;
5581 }
5582 }
5583
5584 /*
5585 * copy out the sense
5586 */
5587 if (ioc->sense_len) {
5588 /*
b70a41e0 5589 * sense_ptr points to the location that has the user
c4a3e0a5
BS		 5590 * sense buffer address
5591 */
7b2519af
YB		 5592 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
5593 ioc->sense_off);
c4a3e0a5 5594
b70a41e0 5595 if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)),
5596 sense, ioc->sense_len)) {
b10c36a5 5597 printk(KERN_ERR "megasas: Failed to copy out to user "
5598 "sense data\n");
c4a3e0a5
BS		 5599 error = -EFAULT;
5600 goto out;
5601 }
5602 }
5603
5604 /*
5605 * copy the status codes returned by the fw
5606 */
5607 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
5608 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
5609 printk(KERN_DEBUG "megasas: Error copying out cmd_status\n");
5610 error = -EFAULT;
5611 }
5612
5613 out:
5614 if (sense) {
9f35fa8a 5615 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
c4a3e0a5
BS		 5616 sense, sense_handle);
5617 }
5618
7a6a731b
BM		 5619 for (i = 0; i < ioc->sge_count; i++) {
5620 if (kbuff_arr[i])
5621 dma_free_coherent(&instance->pdev->dev,
94cd65dd 5622 le32_to_cpu(kern_sge32[i].length),
7a6a731b 5623 kbuff_arr[i],
94cd65dd 5624 le32_to_cpu(kern_sge32[i].phys_addr));
c4a3e0a5
BS		 5625 }
5626
5627 megasas_return_cmd(instance, cmd);
5628 return error;
5629}
5630
c4a3e0a5
BS		 5631static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
5632{
5633 struct megasas_iocpacket __user *user_ioc =
5634 (struct megasas_iocpacket __user *)arg;
5635 struct megasas_iocpacket *ioc;
5636 struct megasas_instance *instance;
5637 int error;
39a98554 5638 int i;
5639 unsigned long flags;
5640 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 5641
5642 ioc = kmalloc(sizeof(*ioc), GFP_KERNEL);
5643 if (!ioc)
5644 return -ENOMEM;
5645
5646 if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) {
5647 error = -EFAULT;
5648 goto out_kfree_ioc;
5649 }
5650
5651 instance = megasas_lookup_instance(ioc->host_no);
5652 if (!instance) {
5653 error = -ENODEV;
5654 goto out_kfree_ioc;
5655 }
5656
229fe47c 5657 /* Adjust ioctl wait time for VF mode */
5658 if (instance->requestorId)
5659 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF;
5660
5661 /* Block ioctls in VF mode */
5662 if (instance->requestorId && !allow_vf_ioctls) {
5663 error = -ENODEV;
5664 goto out_kfree_ioc;
5665 }
5666
39a98554 5667 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
5668 printk(KERN_ERR "Controller in crit error\n");
0c79e681
YB		 5669 error = -ENODEV;
5670 goto out_kfree_ioc;
5671 }
5672
5673 if (instance->unload == 1) {
5674 error = -ENODEV;
5675 goto out_kfree_ioc;
5676 }
5677
c4a3e0a5
BS		 5678 /*
5679 * We will allow only MEGASAS_INT_CMDS number of parallel ioctl cmds
5680 */
5681 if (down_interruptible(&instance->ioctl_sem)) {
5682 error = -ERESTARTSYS;
5683 goto out_kfree_ioc;
5684 }
39a98554 5685
5686 for (i = 0; i < wait_time; i++) {
5687
5688 spin_lock_irqsave(&instance->hba_lock, flags);
5689 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
5690 spin_unlock_irqrestore(&instance->hba_lock, flags);
5691 break;
5692 }
5693 spin_unlock_irqrestore(&instance->hba_lock, flags);
5694
5695 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
5696 printk(KERN_NOTICE "megasas: waiting"
5697 "for controller reset to finish\n");
5698 }
5699
5700 msleep(1000);
5701 }
5702
5703 spin_lock_irqsave(&instance->hba_lock, flags);
5704 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
5705 spin_unlock_irqrestore(&instance->hba_lock, flags);
5706
5707 printk(KERN_ERR "megaraid_sas: timed out while"
5708 "waiting for HBA to recover\n");
5709 error = -ENODEV;
c64e483e 5710 goto out_up;
39a98554 5711 }
5712 spin_unlock_irqrestore(&instance->hba_lock, flags);
5713
c4a3e0a5 5714 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
c64e483e 5715 out_up:
c4a3e0a5
BS		 5716 up(&instance->ioctl_sem);
5717
5718 out_kfree_ioc:
5719 kfree(ioc);
5720 return error;
5721}
5722
5723static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
5724{
5725 struct megasas_instance *instance;
5726 struct megasas_aen aen;
5727 int error;
39a98554 5728 int i;
5729 unsigned long flags;
5730 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 5731
5732 if (file->private_data != file) {
5733 printk(KERN_DEBUG "megasas: fasync_helper was not "
5734 "called first\n");
5735 return -EINVAL;
5736 }
5737
5738 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
5739 return -EFAULT;
5740
5741 instance = megasas_lookup_instance(aen.host_no);
5742
5743 if (!instance)
5744 return -ENODEV;
5745
39a98554 5746 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
5747 return -ENODEV;
0c79e681
YB		 5748 }
5749
5750 if (instance->unload == 1) {
5751 return -ENODEV;
5752 }
5753
39a98554 5754 for (i = 0; i < wait_time; i++) {
5755
5756 spin_lock_irqsave(&instance->hba_lock, flags);
5757 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
5758 spin_unlock_irqrestore(&instance->hba_lock,
5759 flags);
5760 break;
5761 }
5762
5763 spin_unlock_irqrestore(&instance->hba_lock, flags);
5764
5765 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
5766 printk(KERN_NOTICE "megasas: waiting for"
5767 "controller reset to finish\n");
5768 }
5769
5770 msleep(1000);
5771 }
5772
5773 spin_lock_irqsave(&instance->hba_lock, flags);
5774 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
5775 spin_unlock_irqrestore(&instance->hba_lock, flags);
5776 printk(KERN_ERR "megaraid_sas: timed out while waiting"
5777 "for HBA to recover.\n");
5778 return -ENODEV;
5779 }
5780 spin_unlock_irqrestore(&instance->hba_lock, flags);
5781
e5a69e27 5782 mutex_lock(&instance->aen_mutex);
c4a3e0a5
BS		 5783 error = megasas_register_aen(instance, aen.seq_num,
5784 aen.class_locale_word);
e5a69e27 5785 mutex_unlock(&instance->aen_mutex);
c4a3e0a5
BS		 5786 return error;
5787}
5788
5789/**
5790 * megasas_mgmt_ioctl - char node ioctl entry point
5791 */
5792static long
5793megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
5794{
5795 switch (cmd) {
5796 case MEGASAS_IOC_FIRMWARE:
5797 return megasas_mgmt_ioctl_fw(file, arg);
5798
5799 case MEGASAS_IOC_GET_AEN:
5800 return megasas_mgmt_ioctl_aen(file, arg);
5801 }
5802
5803 return -ENOTTY;
5804}
5805
5806#ifdef CONFIG_COMPAT
5807static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
5808{
5809 struct compat_megasas_iocpacket __user *cioc =
5810 (struct compat_megasas_iocpacket __user *)arg;
5811 struct megasas_iocpacket __user *ioc =
5812 compat_alloc_user_space(sizeof(struct megasas_iocpacket));
5813 int i;
5814 int error = 0;
b3dc1a21 5815 compat_uptr_t ptr;
c4a3e0a5 5816
83aabc1b
JG		 5817 if (clear_user(ioc, sizeof(*ioc)))
5818 return -EFAULT;
c4a3e0a5
BS		 5819
5820 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
5821 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
5822 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
5823 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
5824 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
5825 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
5826 return -EFAULT;
5827
b3dc1a21
TH		 5828 /*
5829 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
5830 * sense_len is not null, so prepare the 64bit value under
5831 * the same condition.
5832 */
5833 if (ioc->sense_len) {
5834 void __user **sense_ioc_ptr =
5835 (void __user **)(ioc->frame.raw + ioc->sense_off);
5836 compat_uptr_t *sense_cioc_ptr =
5837 (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off);
5838 if (get_user(ptr, sense_cioc_ptr) ||
5839 put_user(compat_ptr(ptr), sense_ioc_ptr))
5840 return -EFAULT;
5841 }
c4a3e0a5 5842
b3dc1a21 5843 for (i = 0; i < MAX_IOCTL_SGE; i++) {
c4a3e0a5
BS		 5844 if (get_user(ptr, &cioc->sgl[i].iov_base) ||
5845 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
5846 copy_in_user(&ioc->sgl[i].iov_len,
5847 &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
5848 return -EFAULT;
5849 }
5850
5851 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
5852
5853 if (copy_in_user(&cioc->frame.hdr.cmd_status,
5854 &ioc->frame.hdr.cmd_status, sizeof(u8))) {
5855 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
5856 return -EFAULT;
5857 }
5858 return error;
5859}
5860
5861static long
5862megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
5863 unsigned long arg)
5864{
5865 switch (cmd) {
cb59aa6a
SP		 5866 case MEGASAS_IOC_FIRMWARE32:
5867 return megasas_mgmt_compat_ioctl_fw(file, arg);
c4a3e0a5
BS		 5868 case MEGASAS_IOC_GET_AEN:
5869 return megasas_mgmt_ioctl_aen(file, arg);
5870 }
5871
5872 return -ENOTTY;
5873}
5874#endif
5875
5876/*
5877 * File operations structure for management interface
5878 */
00977a59 5879static const struct file_operations megasas_mgmt_fops = {
c4a3e0a5
BS		 5880 .owner = THIS_MODULE,
5881 .open = megasas_mgmt_open,
c4a3e0a5
BS		 5882 .fasync = megasas_mgmt_fasync,
5883 .unlocked_ioctl = megasas_mgmt_ioctl,
c3518837 5884 .poll = megasas_mgmt_poll,
c4a3e0a5
BS		 5885#ifdef CONFIG_COMPAT
5886 .compat_ioctl = megasas_mgmt_compat_ioctl,
5887#endif
6038f373 5888 .llseek = noop_llseek,
c4a3e0a5
BS		 5889};
5890
5891/*
5892 * PCI hotplug support registration structure
5893 */
5894static struct pci_driver megasas_pci_driver = {
5895
5896 .name = "megaraid_sas",
5897 .id_table = megasas_pci_table,
5898 .probe = megasas_probe_one,
6f039790 5899 .remove = megasas_detach_one,
31ea7088 5900 .suspend = megasas_suspend,
5901 .resume = megasas_resume,
c4a3e0a5
BS		 5902 .shutdown = megasas_shutdown,
5903};
5904
5905/*
5906 * Sysfs driver attributes
5907 */
5908static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf)
5909{
5910 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
5911 MEGASAS_VERSION);
5912}
5913
5914static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL);
5915
5916static ssize_t
5917megasas_sysfs_show_release_date(struct device_driver *dd, char *buf)
5918{
5919 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
5920 MEGASAS_RELDATE);
5921}
5922
5923static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date,
5924 NULL);
5925
72c4fd36
YB		 5926static ssize_t
5927megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf)
5928{
5929 return sprintf(buf, "%u\n", support_poll_for_event);
5930}
5931
5932static DRIVER_ATTR(support_poll_for_event, S_IRUGO,
5933 megasas_sysfs_show_support_poll_for_event, NULL);
5934
837f5fe8
YB		 5935 static ssize_t
5936megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf)
5937{
5938 return sprintf(buf, "%u\n", support_device_change);
5939}
5940
5941static DRIVER_ATTR(support_device_change, S_IRUGO,
5942 megasas_sysfs_show_support_device_change, NULL);
5943
658dcedb
SP		 5944static ssize_t
5945megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf)
5946{
ad84db2e 5947 return sprintf(buf, "%u\n", megasas_dbg_lvl);
658dcedb
SP		 5948}
5949
5950static ssize_t
5951megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count)
5952{
5953 int retval = count;
5954 if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){
5955 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
5956 retval = -EINVAL;
5957 }
5958 return retval;
5959}
5960
66dca9b8 5961static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl,
ad84db2e 5962 megasas_sysfs_set_dbg_lvl);
5963
7e8a75f4
YB		 5964static void
5965megasas_aen_polling(struct work_struct *work)
5966{
5967 struct megasas_aen_event *ev =
c1d390d8 5968 container_of(work, struct megasas_aen_event, hotplug_work.work);
7e8a75f4
YB		 5969 struct megasas_instance *instance = ev->instance;
5970 union megasas_evt_class_locale class_locale;
5971 struct Scsi_Host *host;
5972 struct scsi_device *sdev1;
5973 u16 pd_index = 0;
c9786842 5974 u16 ld_index = 0;
7e8a75f4 5975 int i, j, doscan = 0;
229fe47c 5976 u32 seq_num, wait_time = MEGASAS_RESET_WAIT_TIME;
7e8a75f4
YB		 5977 int error;
5978
5979 if (!instance) {
5980 printk(KERN_ERR "invalid instance!\n");
5981 kfree(ev);
5982 return;
5983 }
229fe47c 5984
5985 /* Adjust event workqueue thread wait time for VF mode */
5986 if (instance->requestorId)
5987 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF;
5988
5989 /* Don't run the event workqueue thread if OCR is running */
5990 for (i = 0; i < wait_time; i++) {
5991 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL)
5992 break;
5993 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
5994 printk(KERN_NOTICE "megasas: %s waiting for "
5995 "controller reset to finish for scsi%d\n",
5996 __func__, instance->host->host_no);
5997 }
5998 msleep(1000);
5999 }
6000
7e8a75f4
YB		 6001 instance->ev = NULL;
6002 host = instance->host;
6003 if (instance->evt_detail) {
6004
94cd65dd 6005 switch (le32_to_cpu(instance->evt_detail->code)) {
7e8a75f4 6006 case MR_EVT_PD_INSERTED:
c9786842
YB		 6007 if (megasas_get_pd_list(instance) == 0) {
6008 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
6009 for (j = 0;
6010 j < MEGASAS_MAX_DEV_PER_CHANNEL;
6011 j++) {
6012
6013 pd_index =
6014 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6015
6016 sdev1 =
6017 scsi_device_lookup(host, i, j, 0);
6018
6019 if (instance->pd_list[pd_index].driveState
6020 == MR_PD_STATE_SYSTEM) {
6021 if (!sdev1) {
6022 scsi_add_device(host, i, j, 0);
6023 }
6024
6025 if (sdev1)
6026 scsi_device_put(sdev1);
6027 }
6028 }
6029 }
6030 }
6031 doscan = 0;
6032 break;
6033
7e8a75f4 6034 case MR_EVT_PD_REMOVED:
c9786842 6035 if (megasas_get_pd_list(instance) == 0) {
c9786842
YB		 6036 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
6037 for (j = 0;
6038 j < MEGASAS_MAX_DEV_PER_CHANNEL;
6039 j++) {
6040
6041 pd_index =
6042 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6043
6044 sdev1 =
6045 scsi_device_lookup(host, i, j, 0);
6046
6047 if (instance->pd_list[pd_index].driveState
6048 == MR_PD_STATE_SYSTEM) {
6049 if (sdev1) {
6050 scsi_device_put(sdev1);
6051 }
6052 } else {
6053 if (sdev1) {
6054 scsi_remove_device(sdev1);
6055 scsi_device_put(sdev1);
6056 }
6057 }
6058 }
6059 }
6060 }
6061 doscan = 0;
6062 break;
6063
6064 case MR_EVT_LD_OFFLINE:
4c598b23 6065 case MR_EVT_CFG_CLEARED:
c9786842 6066 case MR_EVT_LD_DELETED:
229fe47c 6067 if (!instance->requestorId ||
6068 (instance->requestorId &&
6069 megasas_get_ld_vf_affiliation(instance, 0))) {
6070 if (megasas_ld_list_query(instance,
6071 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
6072 megasas_get_ld_list(instance);
6073 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
6074 for (j = 0;
6075 j < MEGASAS_MAX_DEV_PER_CHANNEL;
6076 j++) {
6077
6078 ld_index =
6079 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6080
6081 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6082
6083 if (instance->ld_ids[ld_index]
6084 != 0xff) {
6085 if (sdev1)
6086 scsi_device_put(sdev1);
6087 } else {
6088 if (sdev1) {
6089 scsi_remove_device(sdev1);
6090 scsi_device_put(sdev1);
6091 }
6092 }
c9786842
YB		 6093 }
6094 }
229fe47c 6095 doscan = 0;
c9786842 6096 }
c9786842
YB		 6097 break;
6098 case MR_EVT_LD_CREATED:
229fe47c 6099 if (!instance->requestorId ||
6100 (instance->requestorId &&
6101 megasas_get_ld_vf_affiliation(instance, 0))) {
6102 if (megasas_ld_list_query(instance,
6103 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
6104 megasas_get_ld_list(instance);
6105 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
6106 for (j = 0;
6107 j < MEGASAS_MAX_DEV_PER_CHANNEL;
6108 j++) {
6109 ld_index =
6110 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6111
6112 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6113
6114 if (instance->ld_ids[ld_index]
6115 != 0xff) {
6116 if (!sdev1)
6117 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
c9786842 6118 }
229fe47c 6119 if (sdev1)
6120 scsi_device_put(sdev1);
c9786842
YB		 6121 }
6122 }
229fe47c 6123 doscan = 0;
c9786842 6124 }
c9786842 6125 break;
7e8a75f4 6126 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
c9786842 6127 case MR_EVT_FOREIGN_CFG_IMPORTED:
9c915a8c 6128 case MR_EVT_LD_STATE_CHANGE:
7e8a75f4
YB		 6129 doscan = 1;
6130 break;
6131 default:
6132 doscan = 0;
6133 break;
6134 }
6135 } else {
6136 printk(KERN_ERR "invalid evt_detail!\n");
6137 kfree(ev);
6138 return;
6139 }
6140
6141 if (doscan) {
229fe47c 6142 printk(KERN_INFO "megaraid_sas: scanning for scsi%d...\n",
6143 instance->host->host_no);
58968fc8
HR		 6144 if (megasas_get_pd_list(instance) == 0) {
6145 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
6146 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
6147 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j;
6148 sdev1 = scsi_device_lookup(host, i, j, 0);
6149 if (instance->pd_list[pd_index].driveState ==
6150 MR_PD_STATE_SYSTEM) {
6151 if (!sdev1) {
6152 scsi_add_device(host, i, j, 0);
6153 }
6154 if (sdev1)
6155 scsi_device_put(sdev1);
6156 } else {
6157 if (sdev1) {
6158 scsi_remove_device(sdev1);
6159 scsi_device_put(sdev1);
6160 }
7e8a75f4
YB		 6161 }
6162 }
6163 }
6164 }
c9786842 6165
229fe47c 6166 if (!instance->requestorId ||
6167 (instance->requestorId &&
6168 megasas_get_ld_vf_affiliation(instance, 0))) {
6169 if (megasas_ld_list_query(instance,
6170 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
6171 megasas_get_ld_list(instance);
6172 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
6173 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL;
6174 j++) {
6175 ld_index =
6176 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
c9786842 6177
229fe47c 6178 sdev1 = scsi_device_lookup(host,
6179 MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6180 if (instance->ld_ids[ld_index]
6181 != 0xff) {
6182 if (!sdev1)
6183 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6184 else
6185 scsi_device_put(sdev1);
c9786842 6186 } else {
229fe47c 6187 if (sdev1) {
6188 scsi_remove_device(sdev1);
6189 scsi_device_put(sdev1);
6190 }
c9786842
YB		 6191 }
6192 }
6193 }
6194 }
7e8a75f4
YB		 6195 }
6196
6197 if ( instance->aen_cmd != NULL ) {
6198 kfree(ev);
6199 return ;
6200 }
6201
94cd65dd 6202 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
7e8a75f4
YB		 6203
6204 /* Register AEN with FW for latest sequence number plus 1 */
6205 class_locale.members.reserved = 0;
6206 class_locale.members.locale = MR_EVT_LOCALE_ALL;
6207 class_locale.members.class = MR_EVT_CLASS_DEBUG;
6208 mutex_lock(&instance->aen_mutex);
6209 error = megasas_register_aen(instance, seq_num,
6210 class_locale.word);
6211 mutex_unlock(&instance->aen_mutex);
6212
6213 if (error)
6214 printk(KERN_ERR "register aen failed error %x\n", error);
6215
6216 kfree(ev);
6217}
6218
c4a3e0a5
BS		 6219/**
6220 * megasas_init - Driver load entry point
6221 */
6222static int __init megasas_init(void)
6223{
6224 int rval;
6225
6226 /*
6227 * Announce driver version and other information
6228 */
6229 printk(KERN_INFO "megasas: %s %s\n", MEGASAS_VERSION,
6230 MEGASAS_EXT_VERSION);
6231
bd8d6dd4
KD		 6232 spin_lock_init(&poll_aen_lock);
6233
72c4fd36 6234 support_poll_for_event = 2;
837f5fe8 6235 support_device_change = 1;
72c4fd36 6236
c4a3e0a5
BS		 6237 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
6238
6239 /*
6240 * Register character device node
6241 */
6242 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
6243
6244 if (rval < 0) {
6245 printk(KERN_DEBUG "megasas: failed to open device node\n");
6246 return rval;
6247 }
6248
6249 megasas_mgmt_majorno = rval;
6250
6251 /*
6252 * Register ourselves as PCI hotplug module
6253 */
4041b9cd 6254 rval = pci_register_driver(&megasas_pci_driver);
c4a3e0a5
BS		 6255
6256 if (rval) {
6257 printk(KERN_DEBUG "megasas: PCI hotplug regisration failed \n");
83aabc1b
JG		 6258 goto err_pcidrv;
6259 }
6260
6261 rval = driver_create_file(&megasas_pci_driver.driver,
6262 &driver_attr_version);
6263 if (rval)
6264 goto err_dcf_attr_ver;
6265 rval = driver_create_file(&megasas_pci_driver.driver,
6266 &driver_attr_release_date);
6267 if (rval)
6268 goto err_dcf_rel_date;
72c4fd36
YB		 6269
6270 rval = driver_create_file(&megasas_pci_driver.driver,
6271 &driver_attr_support_poll_for_event);
6272 if (rval)
6273 goto err_dcf_support_poll_for_event;
6274
83aabc1b
JG		 6275 rval = driver_create_file(&megasas_pci_driver.driver,
6276 &driver_attr_dbg_lvl);
6277 if (rval)
6278 goto err_dcf_dbg_lvl;
837f5fe8
YB		 6279 rval = driver_create_file(&megasas_pci_driver.driver,
6280 &driver_attr_support_device_change);
6281 if (rval)
6282 goto err_dcf_support_device_change;
6283
c4a3e0a5 6284 return rval;
ad84db2e 6285
837f5fe8 6286err_dcf_support_device_change:
ad84db2e 6287 driver_remove_file(&megasas_pci_driver.driver,
6288 &driver_attr_dbg_lvl);
83aabc1b 6289err_dcf_dbg_lvl:
72c4fd36
YB		 6290 driver_remove_file(&megasas_pci_driver.driver,
6291 &driver_attr_support_poll_for_event);
6292
6293err_dcf_support_poll_for_event:
83aabc1b
JG		 6294 driver_remove_file(&megasas_pci_driver.driver,
6295 &driver_attr_release_date);
72c4fd36 6296
83aabc1b
JG		 6297err_dcf_rel_date:
6298 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
6299err_dcf_attr_ver:
6300 pci_unregister_driver(&megasas_pci_driver);
6301err_pcidrv:
6302 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
0d49016b 6303 return rval;
c4a3e0a5
BS		 6304}
6305
6306/**
6307 * megasas_exit - Driver unload entry point
6308 */
6309static void __exit megasas_exit(void)
6310{
658dcedb
SP		 6311 driver_remove_file(&megasas_pci_driver.driver,
6312 &driver_attr_dbg_lvl);
837f5fe8
YB		 6313 driver_remove_file(&megasas_pci_driver.driver,
6314 &driver_attr_support_poll_for_event);
6315 driver_remove_file(&megasas_pci_driver.driver,
6316 &driver_attr_support_device_change);
83aabc1b
JG		 6317 driver_remove_file(&megasas_pci_driver.driver,
6318 &driver_attr_release_date);
6319 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
c4a3e0a5
BS		 6320
6321 pci_unregister_driver(&megasas_pci_driver);
6322 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
6323}
6324
6325module_init(megasas_init);
6326module_exit(megasas_exit);
Linux kernel - Deliverables
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