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megaraid_sas: driver version upgrade and remove some meta data of driver
[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
0d9d8b9f 21 * Version : 06.805.06.00-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
ac95136a
SS		 92int smp_affinity_enable = 1;
93module_param(smp_affinity_enable, int, S_IRUGO);
94MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disbale Default: enable(1)");
95
c4a3e0a5
BS		 96MODULE_LICENSE("GPL");
97MODULE_VERSION(MEGASAS_VERSION);
3d6d174a 98MODULE_AUTHOR("megaraidlinux@lsi.com");
f28cd7cf 99MODULE_DESCRIPTION("LSI MegaRAID SAS Driver");
c4a3e0a5 100
058a8fac 101int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
39a98554 102static int megasas_get_pd_list(struct megasas_instance *instance);
21c9e160 103static int megasas_ld_list_query(struct megasas_instance *instance,
104 u8 query_type);
39a98554 105static int megasas_issue_init_mfi(struct megasas_instance *instance);
106static int megasas_register_aen(struct megasas_instance *instance,
107 u32 seq_num, u32 class_locale_word);
c4a3e0a5
BS		 108/*
109 * PCI ID table for all supported controllers
110 */
111static struct pci_device_id megasas_pci_table[] = {
112
f3d7271c
HK		 113 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
114 /* xscale IOP */
115 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
116 /* ppc IOP */
af7a5647 117 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
118 /* ppc IOP */
6610a6b3
YB		 119 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
120 /* gen2*/
121 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
122 /* gen2*/
87911122
YB		 123 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
124 /* skinny*/
125 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
126 /* skinny*/
f3d7271c
HK		 127 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
128 /* xscale IOP, vega */
129 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
130 /* xscale IOP */
9c915a8c 131 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
132 /* Fusion */
229fe47c 133 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)},
134 /* Plasma */
36807e67 135 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
136 /* Invader */
21d3c710
SS		 137 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
138 /* Fury */
f3d7271c 139 {}
c4a3e0a5
BS		 140};
141
142MODULE_DEVICE_TABLE(pci, megasas_pci_table);
143
144static int megasas_mgmt_majorno;
229fe47c 145struct megasas_mgmt_info megasas_mgmt_info;
c4a3e0a5 146static struct fasync_struct *megasas_async_queue;
0b950672 147static DEFINE_MUTEX(megasas_async_queue_mutex);
c4a3e0a5 148
c3518837
YB		 149static int megasas_poll_wait_aen;
150static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
72c4fd36 151static u32 support_poll_for_event;
9c915a8c 152u32 megasas_dbg_lvl;
837f5fe8 153static u32 support_device_change;
658dcedb 154
c3518837
YB		 155/* define lock for aen poll */
156spinlock_t poll_aen_lock;
157
9c915a8c 158void
7343eb65 159megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
160 u8 alt_status);
ebf054b0 161static u32
162megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs);
163static int
164megasas_adp_reset_gen2(struct megasas_instance *instance,
165 struct megasas_register_set __iomem *reg_set);
cd50ba8e 166static irqreturn_t megasas_isr(int irq, void *devp);
167static u32
168megasas_init_adapter_mfi(struct megasas_instance *instance);
169u32
170megasas_build_and_issue_cmd(struct megasas_instance *instance,
171 struct scsi_cmnd *scmd);
172static void megasas_complete_cmd_dpc(unsigned long instance_addr);
9c915a8c 173void
174megasas_release_fusion(struct megasas_instance *instance);
175int
176megasas_ioc_init_fusion(struct megasas_instance *instance);
177void
178megasas_free_cmds_fusion(struct megasas_instance *instance);
179u8
180megasas_get_map_info(struct megasas_instance *instance);
181int
182megasas_sync_map_info(struct megasas_instance *instance);
183int
229fe47c 184wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
185 int seconds);
9c915a8c 186void megasas_reset_reply_desc(struct megasas_instance *instance);
229fe47c 187int megasas_reset_fusion(struct Scsi_Host *shost, int iotimeout);
9c915a8c 188void megasas_fusion_ocr_wq(struct work_struct *work);
229fe47c 189static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
190 int initial);
191int megasas_check_mpio_paths(struct megasas_instance *instance,
192 struct scsi_cmnd *scmd);
cd50ba8e 193
194void
195megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
196{
197 instance->instancet->fire_cmd(instance,
198 cmd->frame_phys_addr, 0, instance->reg_set);
199}
7343eb65 200
c4a3e0a5
BS		 201/**
202 * megasas_get_cmd - Get a command from the free pool
203 * @instance: Adapter soft state
204 *
205 * Returns a free command from the pool
206 */
9c915a8c 207struct megasas_cmd *megasas_get_cmd(struct megasas_instance
c4a3e0a5
BS		 208 *instance)
209{
210 unsigned long flags;
211 struct megasas_cmd *cmd = NULL;
212
90dc9d98 213 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
c4a3e0a5
BS		 214
215 if (!list_empty(&instance->cmd_pool)) {
216 cmd = list_entry((&instance->cmd_pool)->next,
217 struct megasas_cmd, list);
218 list_del_init(&cmd->list);
90dc9d98 219 atomic_set(&cmd->mfi_mpt_pthr, MFI_MPT_DETACHED);
c4a3e0a5
BS		 220 } else {
221 printk(KERN_ERR "megasas: Command pool empty!\n");
222 }
223
90dc9d98 224 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
c4a3e0a5
BS		 225 return cmd;
226}
227
228/**
90dc9d98 229 * __megasas_return_cmd - Return a cmd to free command pool
c4a3e0a5
BS		 230 * @instance: Adapter soft state
231 * @cmd: Command packet to be returned to free command pool
232 */
9c915a8c 233inline void
90dc9d98 234__megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
c4a3e0a5 235{
90dc9d98
SS		 236 /*
237 * Don't go ahead and free the MFI frame, if corresponding
238 * MPT frame is not freed(valid for only fusion adapters).
239 * In case of MFI adapters, anyways for any allocated MFI
240 * frame will have cmd->mfi_mpt_mpthr set to MFI_MPT_DETACHED
241 */
242 if (atomic_read(&cmd->mfi_mpt_pthr) != MFI_MPT_DETACHED)
243 return;
c4a3e0a5
BS		 244
245 cmd->scmd = NULL;
9c915a8c 246 cmd->frame_count = 0;
90dc9d98
SS		 247 cmd->is_wait_event = 0;
248 cmd->mpt_pthr_cmd_blocked = NULL;
249
e5f93a36 250 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) &&
251 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) &&
21d3c710 252 (instance->pdev->device != PCI_DEVICE_ID_LSI_FURY) &&
e5f93a36 253 (reset_devices))
254 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
c4a3e0a5 255
90dc9d98
SS		 256 atomic_set(&cmd->mfi_mpt_pthr, MFI_LIST_ADDED);
257 list_add(&cmd->list, (&instance->cmd_pool)->next);
258}
259
260/**
261 * megasas_return_cmd - Return a cmd to free command pool
262 * @instance: Adapter soft state
263 * @cmd: Command packet to be returned to free command pool
264 */
265inline void
266megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
267{
268 unsigned long flags;
269
270 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
271 __megasas_return_cmd(instance, cmd);
272 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
c4a3e0a5
BS		 273}
274
1341c939
SP		 275
276/**
0d49016b 277* The following functions are defined for xscale
1341c939
SP		 278* (deviceid : 1064R, PERC5) controllers
279*/
280
c4a3e0a5 281/**
1341c939 282 * megasas_enable_intr_xscale - Enables interrupts
c4a3e0a5
BS		 283 * @regs: MFI register set
284 */
285static inline void
d46a3ad6 286megasas_enable_intr_xscale(struct megasas_instance *instance)
c4a3e0a5 287{
d46a3ad6
SS		 288 struct megasas_register_set __iomem *regs;
289 regs = instance->reg_set;
39a98554 290 writel(0, &(regs)->outbound_intr_mask);
c4a3e0a5
BS		 291
292 /* Dummy readl to force pci flush */
293 readl(&regs->outbound_intr_mask);
294}
295
b274cab7
SP		 296/**
297 * megasas_disable_intr_xscale -Disables interrupt
298 * @regs: MFI register set
299 */
300static inline void
d46a3ad6 301megasas_disable_intr_xscale(struct megasas_instance *instance)
b274cab7 302{
d46a3ad6 303 struct megasas_register_set __iomem *regs;
b274cab7 304 u32 mask = 0x1f;
d46a3ad6 305 regs = instance->reg_set;
b274cab7
SP		 306 writel(mask, &regs->outbound_intr_mask);
307 /* Dummy readl to force pci flush */
308 readl(&regs->outbound_intr_mask);
309}
310
1341c939
SP		 311/**
312 * megasas_read_fw_status_reg_xscale - returns the current FW status value
313 * @regs: MFI register set
314 */
315static u32
316megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs)
317{
318 return readl(&(regs)->outbound_msg_0);
319}
320/**
321 * megasas_clear_interrupt_xscale - Check & clear interrupt
322 * @regs: MFI register set
323 */
0d49016b 324static int
1341c939
SP		 325megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs)
326{
327 u32 status;
39a98554 328 u32 mfiStatus = 0;
1341c939
SP		 329 /*
330 * Check if it is our interrupt
331 */
332 status = readl(&regs->outbound_intr_status);
333
39a98554 334 if (status & MFI_OB_INTR_STATUS_MASK)
335 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
336 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
337 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
1341c939
SP		 338
339 /*
340 * Clear the interrupt by writing back the same value
341 */
39a98554 342 if (mfiStatus)
343 writel(status, &regs->outbound_intr_status);
1341c939 344
06f579de
YB		 345 /* Dummy readl to force pci flush */
346 readl(&regs->outbound_intr_status);
347
39a98554 348 return mfiStatus;
1341c939
SP		 349}
350
351/**
352 * megasas_fire_cmd_xscale - Sends command to the FW
353 * @frame_phys_addr : Physical address of cmd
354 * @frame_count : Number of frames for the command
355 * @regs : MFI register set
356 */
0d49016b 357static inline void
0c79e681
YB		 358megasas_fire_cmd_xscale(struct megasas_instance *instance,
359 dma_addr_t frame_phys_addr,
360 u32 frame_count,
361 struct megasas_register_set __iomem *regs)
1341c939 362{
39a98554 363 unsigned long flags;
364 spin_lock_irqsave(&instance->hba_lock, flags);
1341c939
SP		 365 writel((frame_phys_addr >> 3)|(frame_count),
366 &(regs)->inbound_queue_port);
39a98554 367 spin_unlock_irqrestore(&instance->hba_lock, flags);
368}
369
370/**
371 * megasas_adp_reset_xscale - For controller reset
372 * @regs: MFI register set
373 */
374static int
375megasas_adp_reset_xscale(struct megasas_instance *instance,
376 struct megasas_register_set __iomem *regs)
377{
378 u32 i;
379 u32 pcidata;
380 writel(MFI_ADP_RESET, &regs->inbound_doorbell);
381
382 for (i = 0; i < 3; i++)
383 msleep(1000); /* sleep for 3 secs */
384 pcidata = 0;
385 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
386 printk(KERN_NOTICE "pcidata = %x\n", pcidata);
387 if (pcidata & 0x2) {
388 printk(KERN_NOTICE "mfi 1068 offset read=%x\n", pcidata);
389 pcidata &= ~0x2;
390 pci_write_config_dword(instance->pdev,
391 MFI_1068_PCSR_OFFSET, pcidata);
392
393 for (i = 0; i < 2; i++)
394 msleep(1000); /* need to wait 2 secs again */
395
396 pcidata = 0;
397 pci_read_config_dword(instance->pdev,
398 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
399 printk(KERN_NOTICE "1068 offset handshake read=%x\n", pcidata);
400 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
401 printk(KERN_NOTICE "1068 offset pcidt=%x\n", pcidata);
402 pcidata = 0;
403 pci_write_config_dword(instance->pdev,
404 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
405 }
406 }
407 return 0;
408}
409
410/**
411 * megasas_check_reset_xscale - For controller reset check
412 * @regs: MFI register set
413 */
414static int
415megasas_check_reset_xscale(struct megasas_instance *instance,
416 struct megasas_register_set __iomem *regs)
417{
39a98554 418
419 if ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) &&
94cd65dd
SS		 420 (le32_to_cpu(*instance->consumer) ==
421 MEGASAS_ADPRESET_INPROG_SIGN))
39a98554 422 return 1;
39a98554 423 return 0;
1341c939
SP		 424}
425
426static struct megasas_instance_template megasas_instance_template_xscale = {
427
428 .fire_cmd = megasas_fire_cmd_xscale,
429 .enable_intr = megasas_enable_intr_xscale,
b274cab7 430 .disable_intr = megasas_disable_intr_xscale,
1341c939
SP		 431 .clear_intr = megasas_clear_intr_xscale,
432 .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
39a98554 433 .adp_reset = megasas_adp_reset_xscale,
434 .check_reset = megasas_check_reset_xscale,
cd50ba8e 435 .service_isr = megasas_isr,
436 .tasklet = megasas_complete_cmd_dpc,
437 .init_adapter = megasas_init_adapter_mfi,
438 .build_and_issue_cmd = megasas_build_and_issue_cmd,
439 .issue_dcmd = megasas_issue_dcmd,
1341c939
SP		 440};
441
442/**
0d49016b 443* This is the end of set of functions & definitions specific
1341c939
SP		 444* to xscale (deviceid : 1064R, PERC5) controllers
445*/
446
f9876f0b 447/**
0d49016b 448* The following functions are defined for ppc (deviceid : 0x60)
f9876f0b
SP		 449* controllers
450*/
451
452/**
453 * megasas_enable_intr_ppc - Enables interrupts
454 * @regs: MFI register set
455 */
456static inline void
d46a3ad6 457megasas_enable_intr_ppc(struct megasas_instance *instance)
f9876f0b 458{
d46a3ad6
SS		 459 struct megasas_register_set __iomem *regs;
460 regs = instance->reg_set;
f9876f0b 461 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
0d49016b 462
39a98554 463 writel(~0x80000000, &(regs)->outbound_intr_mask);
f9876f0b
SP		 464
465 /* Dummy readl to force pci flush */
466 readl(&regs->outbound_intr_mask);
467}
468
b274cab7
SP		 469/**
470 * megasas_disable_intr_ppc - Disable interrupt
471 * @regs: MFI register set
472 */
473static inline void
d46a3ad6 474megasas_disable_intr_ppc(struct megasas_instance *instance)
b274cab7 475{
d46a3ad6 476 struct megasas_register_set __iomem *regs;
b274cab7 477 u32 mask = 0xFFFFFFFF;
d46a3ad6 478 regs = instance->reg_set;
b274cab7
SP		 479 writel(mask, &regs->outbound_intr_mask);
480 /* Dummy readl to force pci flush */
481 readl(&regs->outbound_intr_mask);
482}
483
f9876f0b
SP		 484/**
485 * megasas_read_fw_status_reg_ppc - returns the current FW status value
486 * @regs: MFI register set
487 */
488static u32
489megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs)
490{
491 return readl(&(regs)->outbound_scratch_pad);
492}
493
494/**
495 * megasas_clear_interrupt_ppc - Check & clear interrupt
496 * @regs: MFI register set
497 */
0d49016b 498static int
f9876f0b
SP		 499megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs)
500{
3cc6851f 501 u32 status, mfiStatus = 0;
502
f9876f0b
SP		 503 /*
504 * Check if it is our interrupt
505 */
506 status = readl(&regs->outbound_intr_status);
507
3cc6851f 508 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
509 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
510
511 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
512 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
f9876f0b
SP		 513
514 /*
515 * Clear the interrupt by writing back the same value
516 */
517 writel(status, &regs->outbound_doorbell_clear);
518
06f579de
YB		 519 /* Dummy readl to force pci flush */
520 readl(&regs->outbound_doorbell_clear);
521
3cc6851f 522 return mfiStatus;
f9876f0b 523}
3cc6851f 524
f9876f0b
SP		 525/**
526 * megasas_fire_cmd_ppc - Sends command to the FW
527 * @frame_phys_addr : Physical address of cmd
528 * @frame_count : Number of frames for the command
529 * @regs : MFI register set
530 */
0d49016b 531static inline void
0c79e681
YB		 532megasas_fire_cmd_ppc(struct megasas_instance *instance,
533 dma_addr_t frame_phys_addr,
534 u32 frame_count,
535 struct megasas_register_set __iomem *regs)
f9876f0b 536{
39a98554 537 unsigned long flags;
538 spin_lock_irqsave(&instance->hba_lock, flags);
0d49016b 539 writel((frame_phys_addr | (frame_count<<1))|1,
f9876f0b 540 &(regs)->inbound_queue_port);
39a98554 541 spin_unlock_irqrestore(&instance->hba_lock, flags);
f9876f0b
SP		 542}
543
39a98554 544/**
545 * megasas_check_reset_ppc - For controller reset check
546 * @regs: MFI register set
547 */
548static int
549megasas_check_reset_ppc(struct megasas_instance *instance,
550 struct megasas_register_set __iomem *regs)
551{
3cc6851f 552 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL)
553 return 1;
554
39a98554 555 return 0;
556}
3cc6851f 557
f9876f0b 558static struct megasas_instance_template megasas_instance_template_ppc = {
0d49016b 559
f9876f0b
SP		 560 .fire_cmd = megasas_fire_cmd_ppc,
561 .enable_intr = megasas_enable_intr_ppc,
b274cab7 562 .disable_intr = megasas_disable_intr_ppc,
f9876f0b
SP		 563 .clear_intr = megasas_clear_intr_ppc,
564 .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
3cc6851f 565 .adp_reset = megasas_adp_reset_xscale,
39a98554 566 .check_reset = megasas_check_reset_ppc,
cd50ba8e 567 .service_isr = megasas_isr,
568 .tasklet = megasas_complete_cmd_dpc,
569 .init_adapter = megasas_init_adapter_mfi,
570 .build_and_issue_cmd = megasas_build_and_issue_cmd,
571 .issue_dcmd = megasas_issue_dcmd,
f9876f0b
SP		 572};
573
87911122
YB		 574/**
575 * megasas_enable_intr_skinny - Enables interrupts
576 * @regs: MFI register set
577 */
578static inline void
d46a3ad6 579megasas_enable_intr_skinny(struct megasas_instance *instance)
87911122 580{
d46a3ad6
SS		 581 struct megasas_register_set __iomem *regs;
582 regs = instance->reg_set;
87911122
YB		 583 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
584
585 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
586
587 /* Dummy readl to force pci flush */
588 readl(&regs->outbound_intr_mask);
589}
590
591/**
592 * megasas_disable_intr_skinny - Disables interrupt
593 * @regs: MFI register set
594 */
595static inline void
d46a3ad6 596megasas_disable_intr_skinny(struct megasas_instance *instance)
87911122 597{
d46a3ad6 598 struct megasas_register_set __iomem *regs;
87911122 599 u32 mask = 0xFFFFFFFF;
d46a3ad6 600 regs = instance->reg_set;
87911122
YB		 601 writel(mask, &regs->outbound_intr_mask);
602 /* Dummy readl to force pci flush */
603 readl(&regs->outbound_intr_mask);
604}
605
606/**
607 * megasas_read_fw_status_reg_skinny - returns the current FW status value
608 * @regs: MFI register set
609 */
610static u32
611megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs)
612{
613 return readl(&(regs)->outbound_scratch_pad);
614}
615
616/**
617 * megasas_clear_interrupt_skinny - Check & clear interrupt
618 * @regs: MFI register set
619 */
620static int
621megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs)
622{
623 u32 status;
ebf054b0 624 u32 mfiStatus = 0;
625
87911122
YB		 626 /*
627 * Check if it is our interrupt
628 */
629 status = readl(&regs->outbound_intr_status);
630
631 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
39a98554 632 return 0;
87911122
YB		 633 }
634
ebf054b0 635 /*
636 * Check if it is our interrupt
637 */
a3fda7dd 638 if ((megasas_read_fw_status_reg_skinny(regs) & MFI_STATE_MASK) ==
ebf054b0 639 MFI_STATE_FAULT) {
640 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
641 } else
642 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
643
87911122
YB		 644 /*
645 * Clear the interrupt by writing back the same value
646 */
647 writel(status, &regs->outbound_intr_status);
648
649 /*
650 * dummy read to flush PCI
651 */
652 readl(&regs->outbound_intr_status);
653
ebf054b0 654 return mfiStatus;
87911122
YB		 655}
656
657/**
658 * megasas_fire_cmd_skinny - Sends command to the FW
659 * @frame_phys_addr : Physical address of cmd
660 * @frame_count : Number of frames for the command
661 * @regs : MFI register set
662 */
663static inline void
0c79e681
YB		 664megasas_fire_cmd_skinny(struct megasas_instance *instance,
665 dma_addr_t frame_phys_addr,
666 u32 frame_count,
87911122
YB		 667 struct megasas_register_set __iomem *regs)
668{
0c79e681 669 unsigned long flags;
39a98554 670 spin_lock_irqsave(&instance->hba_lock, flags);
94cd65dd
SS		 671 writel(upper_32_bits(frame_phys_addr),
672 &(regs)->inbound_high_queue_port);
673 writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
674 &(regs)->inbound_low_queue_port);
39a98554 675 spin_unlock_irqrestore(&instance->hba_lock, flags);
676}
677
39a98554 678/**
679 * megasas_check_reset_skinny - For controller reset check
680 * @regs: MFI register set
681 */
682static int
683megasas_check_reset_skinny(struct megasas_instance *instance,
684 struct megasas_register_set __iomem *regs)
685{
3cc6851f 686 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL)
687 return 1;
688
39a98554 689 return 0;
87911122
YB		 690}
691
692static struct megasas_instance_template megasas_instance_template_skinny = {
693
694 .fire_cmd = megasas_fire_cmd_skinny,
695 .enable_intr = megasas_enable_intr_skinny,
696 .disable_intr = megasas_disable_intr_skinny,
697 .clear_intr = megasas_clear_intr_skinny,
698 .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
ebf054b0 699 .adp_reset = megasas_adp_reset_gen2,
39a98554 700 .check_reset = megasas_check_reset_skinny,
cd50ba8e 701 .service_isr = megasas_isr,
702 .tasklet = megasas_complete_cmd_dpc,
703 .init_adapter = megasas_init_adapter_mfi,
704 .build_and_issue_cmd = megasas_build_and_issue_cmd,
705 .issue_dcmd = megasas_issue_dcmd,
87911122
YB		 706};
707
708
6610a6b3
YB		 709/**
710* The following functions are defined for gen2 (deviceid : 0x78 0x79)
711* controllers
712*/
713
714/**
715 * megasas_enable_intr_gen2 - Enables interrupts
716 * @regs: MFI register set
717 */
718static inline void
d46a3ad6 719megasas_enable_intr_gen2(struct megasas_instance *instance)
6610a6b3 720{
d46a3ad6
SS		 721 struct megasas_register_set __iomem *regs;
722 regs = instance->reg_set;
6610a6b3
YB		 723 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
724
725 /* write ~0x00000005 (4 & 1) to the intr mask*/
726 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
727
728 /* Dummy readl to force pci flush */
729 readl(&regs->outbound_intr_mask);
730}
731
732/**
733 * megasas_disable_intr_gen2 - Disables interrupt
734 * @regs: MFI register set
735 */
736static inline void
d46a3ad6 737megasas_disable_intr_gen2(struct megasas_instance *instance)
6610a6b3 738{
d46a3ad6 739 struct megasas_register_set __iomem *regs;
6610a6b3 740 u32 mask = 0xFFFFFFFF;
d46a3ad6 741 regs = instance->reg_set;
6610a6b3
YB		 742 writel(mask, &regs->outbound_intr_mask);
743 /* Dummy readl to force pci flush */
744 readl(&regs->outbound_intr_mask);
745}
746
747/**
748 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
749 * @regs: MFI register set
750 */
751static u32
752megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs)
753{
754 return readl(&(regs)->outbound_scratch_pad);
755}
756
757/**
758 * megasas_clear_interrupt_gen2 - Check & clear interrupt
759 * @regs: MFI register set
760 */
761static int
762megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs)
763{
764 u32 status;
39a98554 765 u32 mfiStatus = 0;
6610a6b3
YB		 766 /*
767 * Check if it is our interrupt
768 */
769 status = readl(&regs->outbound_intr_status);
770
b5bccadd 771 if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
39a98554 772 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
773 }
774 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
775 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
776 }
6610a6b3
YB		 777
778 /*
779 * Clear the interrupt by writing back the same value
780 */
39a98554 781 if (mfiStatus)
782 writel(status, &regs->outbound_doorbell_clear);
6610a6b3
YB		 783
784 /* Dummy readl to force pci flush */
785 readl(&regs->outbound_intr_status);
786
39a98554 787 return mfiStatus;
6610a6b3
YB		 788}
789/**
790 * megasas_fire_cmd_gen2 - Sends command to the FW
791 * @frame_phys_addr : Physical address of cmd
792 * @frame_count : Number of frames for the command
793 * @regs : MFI register set
794 */
795static inline void
0c79e681
YB		 796megasas_fire_cmd_gen2(struct megasas_instance *instance,
797 dma_addr_t frame_phys_addr,
798 u32 frame_count,
6610a6b3
YB		 799 struct megasas_register_set __iomem *regs)
800{
39a98554 801 unsigned long flags;
802 spin_lock_irqsave(&instance->hba_lock, flags);
6610a6b3
YB		 803 writel((frame_phys_addr | (frame_count<<1))|1,
804 &(regs)->inbound_queue_port);
39a98554 805 spin_unlock_irqrestore(&instance->hba_lock, flags);
806}
807
808/**
809 * megasas_adp_reset_gen2 - For controller reset
810 * @regs: MFI register set
811 */
812static int
813megasas_adp_reset_gen2(struct megasas_instance *instance,
814 struct megasas_register_set __iomem *reg_set)
815{
816 u32 retry = 0 ;
817 u32 HostDiag;
ebf054b0 818 u32 *seq_offset = &reg_set->seq_offset;
819 u32 *hostdiag_offset = &reg_set->host_diag;
820
821 if (instance->instancet == &megasas_instance_template_skinny) {
822 seq_offset = &reg_set->fusion_seq_offset;
823 hostdiag_offset = &reg_set->fusion_host_diag;
824 }
825
826 writel(0, seq_offset);
827 writel(4, seq_offset);
828 writel(0xb, seq_offset);
829 writel(2, seq_offset);
830 writel(7, seq_offset);
831 writel(0xd, seq_offset);
39a98554 832
39a98554 833 msleep(1000);
834
ebf054b0 835 HostDiag = (u32)readl(hostdiag_offset);
39a98554 836
837 while ( !( HostDiag & DIAG_WRITE_ENABLE) ) {
838 msleep(100);
ebf054b0 839 HostDiag = (u32)readl(hostdiag_offset);
39a98554 840 printk(KERN_NOTICE "RESETGEN2: retry=%x, hostdiag=%x\n",
841 retry, HostDiag);
842
843 if (retry++ >= 100)
844 return 1;
845
846 }
847
848 printk(KERN_NOTICE "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
849
ebf054b0 850 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
39a98554 851
852 ssleep(10);
853
ebf054b0 854 HostDiag = (u32)readl(hostdiag_offset);
39a98554 855 while ( ( HostDiag & DIAG_RESET_ADAPTER) ) {
856 msleep(100);
ebf054b0 857 HostDiag = (u32)readl(hostdiag_offset);
39a98554 858 printk(KERN_NOTICE "RESET_GEN2: retry=%x, hostdiag=%x\n",
859 retry, HostDiag);
860
861 if (retry++ >= 1000)
862 return 1;
863
864 }
865 return 0;
866}
867
868/**
869 * megasas_check_reset_gen2 - For controller reset check
870 * @regs: MFI register set
871 */
872static int
873megasas_check_reset_gen2(struct megasas_instance *instance,
874 struct megasas_register_set __iomem *regs)
875{
707e09bd
YB		 876 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
877 return 1;
878 }
879
39a98554 880 return 0;
6610a6b3
YB		 881}
882
883static struct megasas_instance_template megasas_instance_template_gen2 = {
884
885 .fire_cmd = megasas_fire_cmd_gen2,
886 .enable_intr = megasas_enable_intr_gen2,
887 .disable_intr = megasas_disable_intr_gen2,
888 .clear_intr = megasas_clear_intr_gen2,
889 .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
39a98554 890 .adp_reset = megasas_adp_reset_gen2,
891 .check_reset = megasas_check_reset_gen2,
cd50ba8e 892 .service_isr = megasas_isr,
893 .tasklet = megasas_complete_cmd_dpc,
894 .init_adapter = megasas_init_adapter_mfi,
895 .build_and_issue_cmd = megasas_build_and_issue_cmd,
896 .issue_dcmd = megasas_issue_dcmd,
6610a6b3
YB		 897};
898
f9876f0b
SP		 899/**
900* This is the end of set of functions & definitions
39a98554 901* specific to gen2 (deviceid : 0x78, 0x79) controllers
f9876f0b
SP		 902*/
903
9c915a8c 904/*
905 * Template added for TB (Fusion)
906 */
907extern struct megasas_instance_template megasas_instance_template_fusion;
908
c4a3e0a5
BS		 909/**
910 * megasas_issue_polled - Issues a polling command
911 * @instance: Adapter soft state
0d49016b 912 * @cmd: Command packet to be issued
c4a3e0a5
BS		 913 *
914 * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
915 */
9c915a8c 916int
c4a3e0a5
BS		 917megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
918{
229fe47c 919 int seconds;
c4a3e0a5
BS		 920
921 struct megasas_header *frame_hdr = &cmd->frame->hdr;
922
94cd65dd
SS		 923 frame_hdr->cmd_status = MFI_CMD_STATUS_POLL_MODE;
924 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
c4a3e0a5
BS		 925
926 /*
927 * Issue the frame using inbound queue port
928 */
9c915a8c 929 instance->instancet->issue_dcmd(instance, cmd);
c4a3e0a5
BS		 930
931 /*
932 * Wait for cmd_status to change
933 */
229fe47c 934 if (instance->requestorId)
935 seconds = MEGASAS_ROUTINE_WAIT_TIME_VF;
936 else
937 seconds = MFI_POLL_TIMEOUT_SECS;
938 return wait_and_poll(instance, cmd, seconds);
c4a3e0a5
BS		 939}
940
941/**
942 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds
943 * @instance: Adapter soft state
944 * @cmd: Command to be issued
cfbe7554 945 * @timeout: Timeout in seconds
c4a3e0a5
BS		 946 *
947 * This function waits on an event for the command to be returned from ISR.
2a3681e5 948 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
c4a3e0a5
BS		 949 * Used to issue ioctl commands.
950 */
90dc9d98 951int
c4a3e0a5 952megasas_issue_blocked_cmd(struct megasas_instance *instance,
cfbe7554 953 struct megasas_cmd *cmd, int timeout)
c4a3e0a5 954{
cfbe7554 955 int ret = 0;
c4a3e0a5
BS		 956 cmd->cmd_status = ENODATA;
957
90dc9d98 958 cmd->is_wait_event = 1;
9c915a8c 959 instance->instancet->issue_dcmd(instance, cmd);
cfbe7554
SS		 960 if (timeout) {
961 ret = wait_event_timeout(instance->int_cmd_wait_q,
962 cmd->cmd_status != ENODATA, timeout * HZ);
963 if (!ret)
964 return 1;
965 } else
966 wait_event(instance->int_cmd_wait_q,
967 cmd->cmd_status != ENODATA);
c4a3e0a5
BS		 968
969 return 0;
970}
971
972/**
973 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd
974 * @instance: Adapter soft state
975 * @cmd_to_abort: Previously issued cmd to be aborted
cfbe7554 976 * @timeout: Timeout in seconds
c4a3e0a5 977 *
cfbe7554 978 * MFI firmware can abort previously issued AEN comamnd (automatic event
c4a3e0a5 979 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
2a3681e5
SP		 980 * cmd and waits for return status.
981 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
c4a3e0a5
BS		 982 */
983static int
984megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
cfbe7554 985 struct megasas_cmd *cmd_to_abort, int timeout)
c4a3e0a5
BS		 986{
987 struct megasas_cmd *cmd;
988 struct megasas_abort_frame *abort_fr;
cfbe7554 989 int ret = 0;
c4a3e0a5
BS		 990
991 cmd = megasas_get_cmd(instance);
992
993 if (!cmd)
994 return -1;
995
996 abort_fr = &cmd->frame->abort;
997
998 /*
999 * Prepare and issue the abort frame
1000 */
1001 abort_fr->cmd = MFI_CMD_ABORT;
1002 abort_fr->cmd_status = 0xFF;
94cd65dd
SS		 1003 abort_fr->flags = cpu_to_le16(0);
1004 abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
1005 abort_fr->abort_mfi_phys_addr_lo =
1006 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
1007 abort_fr->abort_mfi_phys_addr_hi =
1008 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
c4a3e0a5
BS		 1009
1010 cmd->sync_cmd = 1;
1011 cmd->cmd_status = 0xFF;
1012
9c915a8c 1013 instance->instancet->issue_dcmd(instance, cmd);
c4a3e0a5 1014
cfbe7554
SS		 1015 if (timeout) {
1016 ret = wait_event_timeout(instance->abort_cmd_wait_q,
1017 cmd->cmd_status != ENODATA, timeout * HZ);
1018 if (!ret) {
1019 dev_err(&instance->pdev->dev, "Command timedout"
1020 "from %s\n", __func__);
1021 return 1;
1022 }
1023 } else
1024 wait_event(instance->abort_cmd_wait_q,
1025 cmd->cmd_status != ENODATA);
1026
39a98554 1027 cmd->sync_cmd = 0;
c4a3e0a5
BS		 1028
1029 megasas_return_cmd(instance, cmd);
1030 return 0;
1031}
1032
1033/**
1034 * megasas_make_sgl32 - Prepares 32-bit SGL
1035 * @instance: Adapter soft state
1036 * @scp: SCSI command from the mid-layer
1037 * @mfi_sgl: SGL to be filled in
1038 *
1039 * If successful, this function returns the number of SG elements. Otherwise,
1040 * it returnes -1.
1041 */
858119e1 1042static int
c4a3e0a5
BS		 1043megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
1044 union megasas_sgl *mfi_sgl)
1045{
1046 int i;
1047 int sge_count;
1048 struct scatterlist *os_sgl;
1049
155d98f0
FT		 1050 sge_count = scsi_dma_map(scp);
1051 BUG_ON(sge_count < 0);
c4a3e0a5 1052
155d98f0
FT		 1053 if (sge_count) {
1054 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
94cd65dd
SS		 1055 mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1056 mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
155d98f0 1057 }
c4a3e0a5 1058 }
c4a3e0a5
BS		 1059 return sge_count;
1060}
1061
1062/**
1063 * megasas_make_sgl64 - Prepares 64-bit SGL
1064 * @instance: Adapter soft state
1065 * @scp: SCSI command from the mid-layer
1066 * @mfi_sgl: SGL to be filled in
1067 *
1068 * If successful, this function returns the number of SG elements. Otherwise,
1069 * it returnes -1.
1070 */
858119e1 1071static int
c4a3e0a5
BS		 1072megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1073 union megasas_sgl *mfi_sgl)
1074{
1075 int i;
1076 int sge_count;
1077 struct scatterlist *os_sgl;
1078
155d98f0
FT		 1079 sge_count = scsi_dma_map(scp);
1080 BUG_ON(sge_count < 0);
c4a3e0a5 1081
155d98f0
FT		 1082 if (sge_count) {
1083 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
94cd65dd
SS		 1084 mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1085 mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
155d98f0 1086 }
c4a3e0a5 1087 }
c4a3e0a5
BS		 1088 return sge_count;
1089}
1090
f4c9a131
YB		 1091/**
1092 * megasas_make_sgl_skinny - Prepares IEEE SGL
1093 * @instance: Adapter soft state
1094 * @scp: SCSI command from the mid-layer
1095 * @mfi_sgl: SGL to be filled in
1096 *
1097 * If successful, this function returns the number of SG elements. Otherwise,
1098 * it returnes -1.
1099 */
1100static int
1101megasas_make_sgl_skinny(struct megasas_instance *instance,
1102 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1103{
1104 int i;
1105 int sge_count;
1106 struct scatterlist *os_sgl;
1107
1108 sge_count = scsi_dma_map(scp);
1109
1110 if (sge_count) {
1111 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
94cd65dd
SS		 1112 mfi_sgl->sge_skinny[i].length =
1113 cpu_to_le32(sg_dma_len(os_sgl));
f4c9a131 1114 mfi_sgl->sge_skinny[i].phys_addr =
94cd65dd
SS		 1115 cpu_to_le64(sg_dma_address(os_sgl));
1116 mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
f4c9a131
YB		 1117 }
1118 }
1119 return sge_count;
1120}
1121
b1df99d9
SP		 1122 /**
1123 * megasas_get_frame_count - Computes the number of frames
d532dbe2 1124 * @frame_type : type of frame- io or pthru frame
b1df99d9
SP		 1125 * @sge_count : number of sg elements
1126 *
1127 * Returns the number of frames required for numnber of sge's (sge_count)
1128 */
1129
f4c9a131
YB		 1130static u32 megasas_get_frame_count(struct megasas_instance *instance,
1131 u8 sge_count, u8 frame_type)
b1df99d9
SP		 1132{
1133 int num_cnt;
1134 int sge_bytes;
1135 u32 sge_sz;
1136 u32 frame_count=0;
1137
1138 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1139 sizeof(struct megasas_sge32);
1140
f4c9a131
YB		 1141 if (instance->flag_ieee) {
1142 sge_sz = sizeof(struct megasas_sge_skinny);
1143 }
1144
b1df99d9 1145 /*
d532dbe2 1146 * Main frame can contain 2 SGEs for 64-bit SGLs and
1147 * 3 SGEs for 32-bit SGLs for ldio &
1148 * 1 SGEs for 64-bit SGLs and
1149 * 2 SGEs for 32-bit SGLs for pthru frame
1150 */
1151 if (unlikely(frame_type == PTHRU_FRAME)) {
f4c9a131
YB		 1152 if (instance->flag_ieee == 1) {
1153 num_cnt = sge_count - 1;
1154 } else if (IS_DMA64)
d532dbe2 1155 num_cnt = sge_count - 1;
1156 else
1157 num_cnt = sge_count - 2;
1158 } else {
f4c9a131
YB		 1159 if (instance->flag_ieee == 1) {
1160 num_cnt = sge_count - 1;
1161 } else if (IS_DMA64)
d532dbe2 1162 num_cnt = sge_count - 2;
1163 else
1164 num_cnt = sge_count - 3;
1165 }
b1df99d9
SP		 1166
1167 if(num_cnt>0){
1168 sge_bytes = sge_sz * num_cnt;
1169
1170 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1171 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1172 }
1173 /* Main frame */
1174 frame_count +=1;
1175
1176 if (frame_count > 7)
1177 frame_count = 8;
1178 return frame_count;
1179}
1180
c4a3e0a5
BS		 1181/**
1182 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1183 * @instance: Adapter soft state
1184 * @scp: SCSI command
1185 * @cmd: Command to be prepared in
1186 *
1187 * This function prepares CDB commands. These are typcially pass-through
1188 * commands to the devices.
1189 */
858119e1 1190static int
c4a3e0a5
BS		 1191megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1192 struct megasas_cmd *cmd)
1193{
c4a3e0a5
BS		 1194 u32 is_logical;
1195 u32 device_id;
1196 u16 flags = 0;
1197 struct megasas_pthru_frame *pthru;
1198
1199 is_logical = MEGASAS_IS_LOGICAL(scp);
1200 device_id = MEGASAS_DEV_INDEX(instance, scp);
1201 pthru = (struct megasas_pthru_frame *)cmd->frame;
1202
1203 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1204 flags = MFI_FRAME_DIR_WRITE;
1205 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1206 flags = MFI_FRAME_DIR_READ;
1207 else if (scp->sc_data_direction == PCI_DMA_NONE)
1208 flags = MFI_FRAME_DIR_NONE;
1209
f4c9a131
YB		 1210 if (instance->flag_ieee == 1) {
1211 flags |= MFI_FRAME_IEEE;
1212 }
1213
c4a3e0a5
BS		 1214 /*
1215 * Prepare the DCDB frame
1216 */
1217 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1218 pthru->cmd_status = 0x0;
1219 pthru->scsi_status = 0x0;
1220 pthru->target_id = device_id;
1221 pthru->lun = scp->device->lun;
1222 pthru->cdb_len = scp->cmd_len;
1223 pthru->timeout = 0;
780a3762 1224 pthru->pad_0 = 0;
94cd65dd
SS		 1225 pthru->flags = cpu_to_le16(flags);
1226 pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
c4a3e0a5
BS		 1227
1228 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1229
8d568253
YB		 1230 /*
1231 * If the command is for the tape device, set the
1232 * pthru timeout to the os layer timeout value.
1233 */
1234 if (scp->device->type == TYPE_TAPE) {
1235 if ((scp->request->timeout / HZ) > 0xFFFF)
1236 pthru->timeout = 0xFFFF;
1237 else
94cd65dd 1238 pthru->timeout = cpu_to_le16(scp->request->timeout / HZ);
8d568253
YB		 1239 }
1240
c4a3e0a5
BS		 1241 /*
1242 * Construct SGL
1243 */
f4c9a131 1244 if (instance->flag_ieee == 1) {
94cd65dd 1245 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
f4c9a131
YB		 1246 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1247 &pthru->sgl);
1248 } else if (IS_DMA64) {
94cd65dd 1249 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
c4a3e0a5
BS		 1250 pthru->sge_count = megasas_make_sgl64(instance, scp,
1251 &pthru->sgl);
1252 } else
1253 pthru->sge_count = megasas_make_sgl32(instance, scp,
1254 &pthru->sgl);
1255
bdc6fb8d
YB		 1256 if (pthru->sge_count > instance->max_num_sge) {
1257 printk(KERN_ERR "megasas: DCDB two many SGE NUM=%x\n",
1258 pthru->sge_count);
1259 return 0;
1260 }
1261
c4a3e0a5
BS		 1262 /*
1263 * Sense info specific
1264 */
1265 pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
94cd65dd
SS		 1266 pthru->sense_buf_phys_addr_hi =
1267 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1268 pthru->sense_buf_phys_addr_lo =
1269 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
c4a3e0a5 1270
c4a3e0a5
BS		 1271 /*
1272 * Compute the total number of frames this command consumes. FW uses
1273 * this number to pull sufficient number of frames from host memory.
1274 */
f4c9a131 1275 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
d532dbe2 1276 PTHRU_FRAME);
c4a3e0a5
BS		 1277
1278 return cmd->frame_count;
1279}
1280
1281/**
1282 * megasas_build_ldio - Prepares IOs to logical devices
1283 * @instance: Adapter soft state
1284 * @scp: SCSI command
fd589a8f 1285 * @cmd: Command to be prepared
c4a3e0a5
BS		 1286 *
1287 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1288 */
858119e1 1289static int
c4a3e0a5
BS		 1290megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1291 struct megasas_cmd *cmd)
1292{
c4a3e0a5
BS		 1293 u32 device_id;
1294 u8 sc = scp->cmnd[0];
1295 u16 flags = 0;
1296 struct megasas_io_frame *ldio;
1297
1298 device_id = MEGASAS_DEV_INDEX(instance, scp);
1299 ldio = (struct megasas_io_frame *)cmd->frame;
1300
1301 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1302 flags = MFI_FRAME_DIR_WRITE;
1303 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1304 flags = MFI_FRAME_DIR_READ;
1305
f4c9a131
YB		 1306 if (instance->flag_ieee == 1) {
1307 flags |= MFI_FRAME_IEEE;
1308 }
1309
c4a3e0a5 1310 /*
b1df99d9 1311 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
c4a3e0a5
BS		 1312 */
1313 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1314 ldio->cmd_status = 0x0;
1315 ldio->scsi_status = 0x0;
1316 ldio->target_id = device_id;
1317 ldio->timeout = 0;
1318 ldio->reserved_0 = 0;
1319 ldio->pad_0 = 0;
94cd65dd 1320 ldio->flags = cpu_to_le16(flags);
c4a3e0a5
BS		 1321 ldio->start_lba_hi = 0;
1322 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1323
1324 /*
1325 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1326 */
1327 if (scp->cmd_len == 6) {
94cd65dd
SS		 1328 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1329 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1330 ((u32) scp->cmnd[2] << 8) |
1331 (u32) scp->cmnd[3]);
c4a3e0a5 1332
94cd65dd 1333 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
c4a3e0a5
BS		 1334 }
1335
1336 /*
1337 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1338 */
1339 else if (scp->cmd_len == 10) {
94cd65dd
SS		 1340 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1341 ((u32) scp->cmnd[7] << 8));
1342 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1343 ((u32) scp->cmnd[3] << 16) |
1344 ((u32) scp->cmnd[4] << 8) |
1345 (u32) scp->cmnd[5]);
c4a3e0a5
BS		 1346 }
1347
1348 /*
1349 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1350 */
1351 else if (scp->cmd_len == 12) {
94cd65dd
SS		 1352 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1353 ((u32) scp->cmnd[7] << 16) |
1354 ((u32) scp->cmnd[8] << 8) |
1355 (u32) scp->cmnd[9]);
c4a3e0a5 1356
94cd65dd
SS		 1357 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1358 ((u32) scp->cmnd[3] << 16) |
1359 ((u32) scp->cmnd[4] << 8) |
1360 (u32) scp->cmnd[5]);
c4a3e0a5
BS		 1361 }
1362
1363 /*
1364 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1365 */
1366 else if (scp->cmd_len == 16) {
94cd65dd
SS		 1367 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1368 ((u32) scp->cmnd[11] << 16) |
1369 ((u32) scp->cmnd[12] << 8) |
1370 (u32) scp->cmnd[13]);
c4a3e0a5 1371
94cd65dd
SS		 1372 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1373 ((u32) scp->cmnd[7] << 16) |
1374 ((u32) scp->cmnd[8] << 8) |
1375 (u32) scp->cmnd[9]);
c4a3e0a5 1376
94cd65dd
SS		 1377 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1378 ((u32) scp->cmnd[3] << 16) |
1379 ((u32) scp->cmnd[4] << 8) |
1380 (u32) scp->cmnd[5]);
c4a3e0a5
BS		 1381
1382 }
1383
1384 /*
1385 * Construct SGL
1386 */
f4c9a131 1387 if (instance->flag_ieee) {
94cd65dd 1388 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
f4c9a131
YB		 1389 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1390 &ldio->sgl);
1391 } else if (IS_DMA64) {
94cd65dd 1392 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
c4a3e0a5
BS		 1393 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1394 } else
1395 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1396
bdc6fb8d
YB		 1397 if (ldio->sge_count > instance->max_num_sge) {
1398 printk(KERN_ERR "megasas: build_ld_io: sge_count = %x\n",
1399 ldio->sge_count);
1400 return 0;
1401 }
1402
c4a3e0a5
BS		 1403 /*
1404 * Sense info specific
1405 */
1406 ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1407 ldio->sense_buf_phys_addr_hi = 0;
94cd65dd 1408 ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
c4a3e0a5 1409
b1df99d9
SP		 1410 /*
1411 * Compute the total number of frames this command consumes. FW uses
1412 * this number to pull sufficient number of frames from host memory.
1413 */
f4c9a131
YB		 1414 cmd->frame_count = megasas_get_frame_count(instance,
1415 ldio->sge_count, IO_FRAME);
c4a3e0a5
BS		 1416
1417 return cmd->frame_count;
1418}
1419
1420/**
cb59aa6a
SP		 1421 * megasas_is_ldio - Checks if the cmd is for logical drive
1422 * @scmd: SCSI command
0d49016b 1423 *
cb59aa6a 1424 * Called by megasas_queue_command to find out if the command to be queued
0d49016b 1425 * is a logical drive command
c4a3e0a5 1426 */
9c915a8c 1427inline int megasas_is_ldio(struct scsi_cmnd *cmd)
c4a3e0a5 1428{
cb59aa6a
SP		 1429 if (!MEGASAS_IS_LOGICAL(cmd))
1430 return 0;
1431 switch (cmd->cmnd[0]) {
1432 case READ_10:
1433 case WRITE_10:
1434 case READ_12:
1435 case WRITE_12:
1436 case READ_6:
1437 case WRITE_6:
1438 case READ_16:
1439 case WRITE_16:
1440 return 1;
1441 default:
1442 return 0;
c4a3e0a5 1443 }
c4a3e0a5
BS		 1444}
1445
658dcedb
SP		 1446 /**
1447 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
1448 * in FW
1449 * @instance: Adapter soft state
1450 */
1451static inline void
1452megasas_dump_pending_frames(struct megasas_instance *instance)
1453{
1454 struct megasas_cmd *cmd;
1455 int i,n;
1456 union megasas_sgl *mfi_sgl;
1457 struct megasas_io_frame *ldio;
1458 struct megasas_pthru_frame *pthru;
1459 u32 sgcount;
1460 u32 max_cmd = instance->max_fw_cmds;
1461
1462 printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1463 printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1464 if (IS_DMA64)
1465 printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1466 else
1467 printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1468
1469 printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1470 for (i = 0; i < max_cmd; i++) {
1471 cmd = instance->cmd_list[i];
1472 if(!cmd->scmd)
1473 continue;
1474 printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1475 if (megasas_is_ldio(cmd->scmd)){
1476 ldio = (struct megasas_io_frame *)cmd->frame;
1477 mfi_sgl = &ldio->sgl;
1478 sgcount = ldio->sge_count;
94cd65dd
SS		 1479 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1480 " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1481 instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1482 le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1483 le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
658dcedb
SP		 1484 }
1485 else {
1486 pthru = (struct megasas_pthru_frame *) cmd->frame;
1487 mfi_sgl = &pthru->sgl;
1488 sgcount = pthru->sge_count;
94cd65dd
SS		 1489 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1490 "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1491 instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1492 pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1493 le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
658dcedb
SP		 1494 }
1495 if(megasas_dbg_lvl & MEGASAS_DBG_LVL){
1496 for (n = 0; n < sgcount; n++){
1497 if (IS_DMA64)
94cd65dd
SS		 1498 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%llx ",
1499 le32_to_cpu(mfi_sgl->sge64[n].length),
1500 le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
658dcedb 1501 else
94cd65dd
SS		 1502 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ",
1503 le32_to_cpu(mfi_sgl->sge32[n].length),
1504 le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
658dcedb
SP		 1505 }
1506 }
1507 printk(KERN_ERR "\n");
1508 } /*for max_cmd*/
1509 printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1510 for (i = 0; i < max_cmd; i++) {
1511
1512 cmd = instance->cmd_list[i];
1513
1514 if(cmd->sync_cmd == 1){
1515 printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1516 }
1517 }
1518 printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no);
1519}
1520
cd50ba8e 1521u32
1522megasas_build_and_issue_cmd(struct megasas_instance *instance,
1523 struct scsi_cmnd *scmd)
1524{
1525 struct megasas_cmd *cmd;
1526 u32 frame_count;
1527
1528 cmd = megasas_get_cmd(instance);
1529 if (!cmd)
1530 return SCSI_MLQUEUE_HOST_BUSY;
1531
1532 /*
1533 * Logical drive command
1534 */
1535 if (megasas_is_ldio(scmd))
1536 frame_count = megasas_build_ldio(instance, scmd, cmd);
1537 else
1538 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1539
1540 if (!frame_count)
1541 goto out_return_cmd;
1542
1543 cmd->scmd = scmd;
1544 scmd->SCp.ptr = (char *)cmd;
1545
1546 /*
1547 * Issue the command to the FW
1548 */
1549 atomic_inc(&instance->fw_outstanding);
1550
1551 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1552 cmd->frame_count-1, instance->reg_set);
cd50ba8e 1553
1554 return 0;
1555out_return_cmd:
1556 megasas_return_cmd(instance, cmd);
1557 return 1;
1558}
1559
1560
c4a3e0a5
BS		 1561/**
1562 * megasas_queue_command - Queue entry point
1563 * @scmd: SCSI command to be queued
1564 * @done: Callback entry point
1565 */
1566static int
fb1a24ff 1567megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
c4a3e0a5 1568{
c4a3e0a5 1569 struct megasas_instance *instance;
39a98554 1570 unsigned long flags;
c4a3e0a5
BS		 1571
1572 instance = (struct megasas_instance *)
1573 scmd->device->host->hostdata;
af37acfb 1574
39a98554 1575 if (instance->issuepend_done == 0)
af37acfb
SP		 1576 return SCSI_MLQUEUE_HOST_BUSY;
1577
39a98554 1578 spin_lock_irqsave(&instance->hba_lock, flags);
b09e66da 1579
229fe47c 1580 /* Check for an mpio path and adjust behavior */
1581 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) {
1582 if (megasas_check_mpio_paths(instance, scmd) ==
1583 (DID_RESET << 16)) {
1584 spin_unlock_irqrestore(&instance->hba_lock, flags);
1585 return SCSI_MLQUEUE_HOST_BUSY;
1586 } else {
1587 spin_unlock_irqrestore(&instance->hba_lock, flags);
1588 scmd->result = DID_NO_CONNECT << 16;
fb1a24ff 1589 scmd->scsi_done(scmd);
229fe47c 1590 return 0;
1591 }
1592 }
1593
b09e66da
SS		 1594 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
1595 spin_unlock_irqrestore(&instance->hba_lock, flags);
229fe47c 1596 scmd->result = DID_NO_CONNECT << 16;
fb1a24ff 1597 scmd->scsi_done(scmd);
b09e66da
SS		 1598 return 0;
1599 }
1600
39a98554 1601 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
1602 spin_unlock_irqrestore(&instance->hba_lock, flags);
1603 return SCSI_MLQUEUE_HOST_BUSY;
1604 }
1605
1606 spin_unlock_irqrestore(&instance->hba_lock, flags);
1607
c4a3e0a5
BS		 1608 scmd->result = 0;
1609
cb59aa6a 1610 if (MEGASAS_IS_LOGICAL(scmd) &&
51087a86
SS		 1611 (scmd->device->id >= instance->fw_supported_vd_count ||
1612 scmd->device->lun)) {
cb59aa6a
SP		 1613 scmd->result = DID_BAD_TARGET << 16;
1614 goto out_done;
c4a3e0a5
BS		 1615 }
1616
02b01e01
SP		 1617 switch (scmd->cmnd[0]) {
1618 case SYNCHRONIZE_CACHE:
1619 /*
1620 * FW takes care of flush cache on its own
1621 * No need to send it down
1622 */
1623 scmd->result = DID_OK << 16;
1624 goto out_done;
1625 default:
1626 break;
1627 }
1628
cd50ba8e 1629 if (instance->instancet->build_and_issue_cmd(instance, scmd)) {
1630 printk(KERN_ERR "megasas: Err returned from build_and_issue_cmd\n");
cb59aa6a 1631 return SCSI_MLQUEUE_HOST_BUSY;
cd50ba8e 1632 }
c4a3e0a5
BS		 1633
1634 return 0;
cb59aa6a 1635
cb59aa6a 1636 out_done:
fb1a24ff 1637 scmd->scsi_done(scmd);
cb59aa6a 1638 return 0;
c4a3e0a5
BS		 1639}
1640
044833b5
YB		 1641static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1642{
1643 int i;
1644
1645 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1646
1647 if ((megasas_mgmt_info.instance[i]) &&
1648 (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1649 return megasas_mgmt_info.instance[i];
1650 }
1651
1652 return NULL;
1653}
1654
147aab6a
CH		 1655static int megasas_slave_configure(struct scsi_device *sdev)
1656{
e5b3a65f 1657 /*
044833b5
YB		 1658 * The RAID firmware may require extended timeouts.
1659 */
1660 blk_queue_rq_timeout(sdev->request_queue,
1661 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
07e38d94 1662
044833b5
YB		 1663 return 0;
1664}
1665
1666static int megasas_slave_alloc(struct scsi_device *sdev)
1667{
1668 u16 pd_index = 0;
1669 struct megasas_instance *instance ;
1670 instance = megasas_lookup_instance(sdev->host->host_no);
07e38d94 1671 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS) {
044833b5
YB		 1672 /*
1673 * Open the OS scan to the SYSTEM PD
1674 */
1675 pd_index =
1676 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1677 sdev->id;
07e38d94
SS		 1678 if (instance->pd_list[pd_index].driveState ==
1679 MR_PD_STATE_SYSTEM) {
044833b5
YB		 1680 return 0;
1681 }
1682 return -ENXIO;
1683 }
147aab6a
CH		 1684 return 0;
1685}
1686
9c915a8c 1687void megaraid_sas_kill_hba(struct megasas_instance *instance)
39a98554 1688{
1689 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
9c915a8c 1690 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
36807e67 1691 (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
229fe47c 1692 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
21d3c710
SS		 1693 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
1694 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
9c915a8c 1695 writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
229fe47c 1696 /* Flush */
1697 readl(&instance->reg_set->doorbell);
1698 if (instance->mpio && instance->requestorId)
1699 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
39a98554 1700 } else {
9c915a8c 1701 writel(MFI_STOP_ADP, &instance->reg_set->inbound_doorbell);
1702 }
1703}
1704
1705 /**
1706 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
1707 * restored to max value
1708 * @instance: Adapter soft state
1709 *
1710 */
1711void
1712megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
1713{
1714 unsigned long flags;
1715 if (instance->flag & MEGASAS_FW_BUSY
c5daa6a9 1716 && time_after(jiffies, instance->last_time + 5 * HZ)
1717 && atomic_read(&instance->fw_outstanding) <
1718 instance->throttlequeuedepth + 1) {
9c915a8c 1719
1720 spin_lock_irqsave(instance->host->host_lock, flags);
1721 instance->flag &= ~MEGASAS_FW_BUSY;
404a8a1a 1722 if (instance->is_imr) {
9c915a8c 1723 instance->host->can_queue =
1724 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
1725 } else
1726 instance->host->can_queue =
1727 instance->max_fw_cmds - MEGASAS_INT_CMDS;
1728
1729 spin_unlock_irqrestore(instance->host->host_lock, flags);
39a98554 1730 }
1731}
1732
7343eb65 1733/**
1734 * megasas_complete_cmd_dpc - Returns FW's controller structure
1735 * @instance_addr: Address of adapter soft state
1736 *
1737 * Tasklet to complete cmds
1738 */
1739static void megasas_complete_cmd_dpc(unsigned long instance_addr)
1740{
1741 u32 producer;
1742 u32 consumer;
1743 u32 context;
1744 struct megasas_cmd *cmd;
1745 struct megasas_instance *instance =
1746 (struct megasas_instance *)instance_addr;
1747 unsigned long flags;
1748
1749 /* If we have already declared adapter dead, donot complete cmds */
39a98554 1750 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR )
7343eb65 1751 return;
1752
1753 spin_lock_irqsave(&instance->completion_lock, flags);
1754
94cd65dd
SS		 1755 producer = le32_to_cpu(*instance->producer);
1756 consumer = le32_to_cpu(*instance->consumer);
7343eb65 1757
1758 while (consumer != producer) {
94cd65dd 1759 context = le32_to_cpu(instance->reply_queue[consumer]);
39a98554 1760 if (context >= instance->max_fw_cmds) {
1761 printk(KERN_ERR "Unexpected context value %x\n",
1762 context);
1763 BUG();
1764 }
7343eb65 1765
1766 cmd = instance->cmd_list[context];
1767
1768 megasas_complete_cmd(instance, cmd, DID_OK);
1769
1770 consumer++;
1771 if (consumer == (instance->max_fw_cmds + 1)) {
1772 consumer = 0;
1773 }
1774 }
1775
94cd65dd 1776 *instance->consumer = cpu_to_le32(producer);
7343eb65 1777
1778 spin_unlock_irqrestore(&instance->completion_lock, flags);
1779
1780 /*
1781 * Check if we can restore can_queue
1782 */
9c915a8c 1783 megasas_check_and_restore_queue_depth(instance);
7343eb65 1784}
1785
229fe47c 1786/**
1787 * megasas_start_timer - Initializes a timer object
1788 * @instance: Adapter soft state
1789 * @timer: timer object to be initialized
1790 * @fn: timer function
1791 * @interval: time interval between timer function call
1792 *
1793 */
1794void megasas_start_timer(struct megasas_instance *instance,
1795 struct timer_list *timer,
1796 void *fn, unsigned long interval)
1797{
1798 init_timer(timer);
1799 timer->expires = jiffies + interval;
1800 timer->data = (unsigned long)instance;
1801 timer->function = fn;
1802 add_timer(timer);
1803}
1804
707e09bd
YB		 1805static void
1806megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
1807
1808static void
1809process_fw_state_change_wq(struct work_struct *work);
1810
1811void megasas_do_ocr(struct megasas_instance *instance)
1812{
1813 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
1814 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
1815 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
94cd65dd 1816 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
707e09bd 1817 }
d46a3ad6 1818 instance->instancet->disable_intr(instance);
707e09bd
YB		 1819 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
1820 instance->issuepend_done = 0;
1821
1822 atomic_set(&instance->fw_outstanding, 0);
1823 megasas_internal_reset_defer_cmds(instance);
1824 process_fw_state_change_wq(&instance->work_init);
1825}
1826
4cbfea88
AR		 1827static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
1828 int initial)
229fe47c 1829{
1830 struct megasas_cmd *cmd;
1831 struct megasas_dcmd_frame *dcmd;
229fe47c 1832 struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
229fe47c 1833 dma_addr_t new_affiliation_111_h;
1834 int ld, retval = 0;
1835 u8 thisVf;
1836
1837 cmd = megasas_get_cmd(instance);
1838
1839 if (!cmd) {
4cbfea88
AR		 1840 printk(KERN_DEBUG "megasas: megasas_get_ld_vf_affiliation_111:"
1841 "Failed to get cmd for scsi%d.\n",
229fe47c 1842 instance->host->host_no);
1843 return -ENOMEM;
1844 }
1845
1846 dcmd = &cmd->frame->dcmd;
1847
4cbfea88 1848 if (!instance->vf_affiliation_111) {
229fe47c 1849 printk(KERN_WARNING "megasas: SR-IOV: Couldn't get LD/VF "
1850 "affiliation for scsi%d.\n", instance->host->host_no);
1851 megasas_return_cmd(instance, cmd);
1852 return -ENOMEM;
1853 }
1854
1855 if (initial)
229fe47c 1856 memset(instance->vf_affiliation_111, 0,
1857 sizeof(struct MR_LD_VF_AFFILIATION_111));
229fe47c 1858 else {
4cbfea88
AR		 1859 new_affiliation_111 =
1860 pci_alloc_consistent(instance->pdev,
1861 sizeof(struct MR_LD_VF_AFFILIATION_111),
1862 &new_affiliation_111_h);
1863 if (!new_affiliation_111) {
229fe47c 1864 printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate "
1865 "memory for new affiliation for scsi%d.\n",
4cbfea88 1866 instance->host->host_no);
229fe47c 1867 megasas_return_cmd(instance, cmd);
1868 return -ENOMEM;
1869 }
4cbfea88
AR		 1870 memset(new_affiliation_111, 0,
1871 sizeof(struct MR_LD_VF_AFFILIATION_111));
229fe47c 1872 }
1873
1874 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1875
1876 dcmd->cmd = MFI_CMD_DCMD;
1877 dcmd->cmd_status = 0xFF;
1878 dcmd->sge_count = 1;
1879 dcmd->flags = MFI_FRAME_DIR_BOTH;
1880 dcmd->timeout = 0;
1881 dcmd->pad_0 = 0;
4cbfea88
AR		 1882 dcmd->data_xfer_len = sizeof(struct MR_LD_VF_AFFILIATION_111);
1883 dcmd->opcode = MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111;
229fe47c 1884
4cbfea88
AR		 1885 if (initial)
1886 dcmd->sgl.sge32[0].phys_addr =
1887 instance->vf_affiliation_111_h;
229fe47c 1888 else
4cbfea88
AR		 1889 dcmd->sgl.sge32[0].phys_addr = new_affiliation_111_h;
1890
1891 dcmd->sgl.sge32[0].length =
1892 sizeof(struct MR_LD_VF_AFFILIATION_111);
229fe47c 1893
1894 printk(KERN_WARNING "megasas: SR-IOV: Getting LD/VF affiliation for "
1895 "scsi%d\n", instance->host->host_no);
1896
1897 megasas_issue_blocked_cmd(instance, cmd, 0);
1898
1899 if (dcmd->cmd_status) {
1900 printk(KERN_WARNING "megasas: SR-IOV: LD/VF affiliation DCMD"
1901 " failed with status 0x%x for scsi%d.\n",
1902 dcmd->cmd_status, instance->host->host_no);
1903 retval = 1; /* Do a scan if we couldn't get affiliation */
1904 goto out;
1905 }
1906
1907 if (!initial) {
4cbfea88
AR		 1908 thisVf = new_affiliation_111->thisVf;
1909 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
1910 if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
1911 new_affiliation_111->map[ld].policy[thisVf]) {
1912 printk(KERN_WARNING "megasas: SR-IOV: "
1913 "Got new LD/VF affiliation "
229fe47c 1914 "for scsi%d.\n",
229fe47c 1915 instance->host->host_no);
4cbfea88
AR		 1916 memcpy(instance->vf_affiliation_111,
1917 new_affiliation_111,
1918 sizeof(struct MR_LD_VF_AFFILIATION_111));
229fe47c 1919 retval = 1;
1920 goto out;
1921 }
4cbfea88
AR		 1922 }
1923out:
1924 if (new_affiliation_111) {
1925 pci_free_consistent(instance->pdev,
1926 sizeof(struct MR_LD_VF_AFFILIATION_111),
1927 new_affiliation_111,
1928 new_affiliation_111_h);
1929 }
90dc9d98
SS		 1930
1931 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
1932 megasas_return_mfi_mpt_pthr(instance, cmd,
1933 cmd->mpt_pthr_cmd_blocked);
1934 else
1935 megasas_return_cmd(instance, cmd);
4cbfea88
AR		 1936
1937 return retval;
1938}
1939
1940static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
1941 int initial)
1942{
1943 struct megasas_cmd *cmd;
1944 struct megasas_dcmd_frame *dcmd;
1945 struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
1946 struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
1947 dma_addr_t new_affiliation_h;
1948 int i, j, retval = 0, found = 0, doscan = 0;
1949 u8 thisVf;
1950
1951 cmd = megasas_get_cmd(instance);
1952
1953 if (!cmd) {
1954 printk(KERN_DEBUG "megasas: megasas_get_ld_vf_affiliation12: "
1955 "Failed to get cmd for scsi%d.\n",
1956 instance->host->host_no);
1957 return -ENOMEM;
1958 }
1959
1960 dcmd = &cmd->frame->dcmd;
1961
1962 if (!instance->vf_affiliation) {
1963 printk(KERN_WARNING "megasas: SR-IOV: Couldn't get LD/VF "
1964 "affiliation for scsi%d.\n", instance->host->host_no);
1965 megasas_return_cmd(instance, cmd);
1966 return -ENOMEM;
1967 }
1968
1969 if (initial)
1970 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
1971 sizeof(struct MR_LD_VF_AFFILIATION));
1972 else {
1973 new_affiliation =
1974 pci_alloc_consistent(instance->pdev,
1975 (MAX_LOGICAL_DRIVES + 1) *
1976 sizeof(struct MR_LD_VF_AFFILIATION),
1977 &new_affiliation_h);
1978 if (!new_affiliation) {
1979 printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate "
1980 "memory for new affiliation for scsi%d.\n",
1981 instance->host->host_no);
1982 megasas_return_cmd(instance, cmd);
1983 return -ENOMEM;
1984 }
1985 memset(new_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
1986 sizeof(struct MR_LD_VF_AFFILIATION));
1987 }
1988
1989 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1990
1991 dcmd->cmd = MFI_CMD_DCMD;
1992 dcmd->cmd_status = 0xFF;
1993 dcmd->sge_count = 1;
1994 dcmd->flags = MFI_FRAME_DIR_BOTH;
1995 dcmd->timeout = 0;
1996 dcmd->pad_0 = 0;
1997 dcmd->data_xfer_len = (MAX_LOGICAL_DRIVES + 1) *
1998 sizeof(struct MR_LD_VF_AFFILIATION);
1999 dcmd->opcode = MR_DCMD_LD_VF_MAP_GET_ALL_LDS;
2000
2001 if (initial)
2002 dcmd->sgl.sge32[0].phys_addr = instance->vf_affiliation_h;
2003 else
2004 dcmd->sgl.sge32[0].phys_addr = new_affiliation_h;
2005
2006 dcmd->sgl.sge32[0].length = (MAX_LOGICAL_DRIVES + 1) *
2007 sizeof(struct MR_LD_VF_AFFILIATION);
2008
2009 printk(KERN_WARNING "megasas: SR-IOV: Getting LD/VF affiliation for "
2010 "scsi%d\n", instance->host->host_no);
2011
2012 megasas_issue_blocked_cmd(instance, cmd, 0);
2013
2014 if (dcmd->cmd_status) {
2015 printk(KERN_WARNING "megasas: SR-IOV: LD/VF affiliation DCMD"
2016 " failed with status 0x%x for scsi%d.\n",
2017 dcmd->cmd_status, instance->host->host_no);
2018 retval = 1; /* Do a scan if we couldn't get affiliation */
2019 goto out;
2020 }
2021
2022 if (!initial) {
2023 if (!new_affiliation->ldCount) {
2024 printk(KERN_WARNING "megasas: SR-IOV: Got new LD/VF "
2025 "affiliation for passive path for scsi%d.\n",
2026 instance->host->host_no);
2027 retval = 1;
2028 goto out;
2029 }
2030 newmap = new_affiliation->map;
2031 savedmap = instance->vf_affiliation->map;
2032 thisVf = new_affiliation->thisVf;
2033 for (i = 0 ; i < new_affiliation->ldCount; i++) {
2034 found = 0;
2035 for (j = 0; j < instance->vf_affiliation->ldCount;
2036 j++) {
2037 if (newmap->ref.targetId ==
2038 savedmap->ref.targetId) {
2039 found = 1;
2040 if (newmap->policy[thisVf] !=
2041 savedmap->policy[thisVf]) {
2042 doscan = 1;
2043 goto out;
2044 }
229fe47c 2045 }
2046 savedmap = (struct MR_LD_VF_MAP *)
2047 ((unsigned char *)savedmap +
2048 savedmap->size);
4cbfea88
AR		 2049 }
2050 if (!found && newmap->policy[thisVf] !=
2051 MR_LD_ACCESS_HIDDEN) {
2052 doscan = 1;
2053 goto out;
2054 }
2055 newmap = (struct MR_LD_VF_MAP *)
2056 ((unsigned char *)newmap + newmap->size);
2057 }
2058
2059 newmap = new_affiliation->map;
2060 savedmap = instance->vf_affiliation->map;
2061
2062 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2063 found = 0;
2064 for (j = 0 ; j < new_affiliation->ldCount; j++) {
2065 if (savedmap->ref.targetId ==
2066 newmap->ref.targetId) {
2067 found = 1;
2068 if (savedmap->policy[thisVf] !=
2069 newmap->policy[thisVf]) {
2070 doscan = 1;
2071 goto out;
2072 }
2073 }
229fe47c 2074 newmap = (struct MR_LD_VF_MAP *)
2075 ((unsigned char *)newmap +
2076 newmap->size);
2077 }
4cbfea88
AR		 2078 if (!found && savedmap->policy[thisVf] !=
2079 MR_LD_ACCESS_HIDDEN) {
2080 doscan = 1;
2081 goto out;
2082 }
2083 savedmap = (struct MR_LD_VF_MAP *)
2084 ((unsigned char *)savedmap +
2085 savedmap->size);
229fe47c 2086 }
2087 }
2088out:
4cbfea88
AR		 2089 if (doscan) {
2090 printk(KERN_WARNING "megasas: SR-IOV: Got new LD/VF "
2091 "affiliation for scsi%d.\n", instance->host->host_no);
2092 memcpy(instance->vf_affiliation, new_affiliation,
2093 new_affiliation->size);
2094 retval = 1;
229fe47c 2095 }
4cbfea88
AR		 2096
2097 if (new_affiliation)
2098 pci_free_consistent(instance->pdev,
2099 (MAX_LOGICAL_DRIVES + 1) *
2100 sizeof(struct MR_LD_VF_AFFILIATION),
2101 new_affiliation, new_affiliation_h);
90dc9d98
SS		 2102 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
2103 megasas_return_mfi_mpt_pthr(instance, cmd,
2104 cmd->mpt_pthr_cmd_blocked);
2105 else
2106 megasas_return_cmd(instance, cmd);
229fe47c 2107
2108 return retval;
2109}
2110
4cbfea88
AR		 2111/* This function will get the current SR-IOV LD/VF affiliation */
2112static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2113 int initial)
2114{
2115 int retval;
2116
2117 if (instance->PlasmaFW111)
2118 retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2119 else
2120 retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2121 return retval;
2122}
2123
229fe47c 2124/* This function will tell FW to start the SR-IOV heartbeat */
2125int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2126 int initial)
2127{
2128 struct megasas_cmd *cmd;
2129 struct megasas_dcmd_frame *dcmd;
2130 int retval = 0;
2131
2132 cmd = megasas_get_cmd(instance);
2133
2134 if (!cmd) {
2135 printk(KERN_DEBUG "megasas: megasas_sriov_start_heartbeat: "
2136 "Failed to get cmd for scsi%d.\n",
2137 instance->host->host_no);
2138 return -ENOMEM;
2139 }
2140
2141 dcmd = &cmd->frame->dcmd;
2142
2143 if (initial) {
2144 instance->hb_host_mem =
7c845eb5
JP		 2145 pci_zalloc_consistent(instance->pdev,
2146 sizeof(struct MR_CTRL_HB_HOST_MEM),
2147 &instance->hb_host_mem_h);
229fe47c 2148 if (!instance->hb_host_mem) {
2149 printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate"
2150 " memory for heartbeat host memory for "
2151 "scsi%d.\n", instance->host->host_no);
2152 retval = -ENOMEM;
2153 goto out;
2154 }
229fe47c 2155 }
2156
2157 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2158
2159 dcmd->mbox.s[0] = sizeof(struct MR_CTRL_HB_HOST_MEM);
2160 dcmd->cmd = MFI_CMD_DCMD;
2161 dcmd->cmd_status = 0xFF;
2162 dcmd->sge_count = 1;
2163 dcmd->flags = MFI_FRAME_DIR_BOTH;
2164 dcmd->timeout = 0;
2165 dcmd->pad_0 = 0;
2166 dcmd->data_xfer_len = sizeof(struct MR_CTRL_HB_HOST_MEM);
2167 dcmd->opcode = MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC;
2168 dcmd->sgl.sge32[0].phys_addr = instance->hb_host_mem_h;
2169 dcmd->sgl.sge32[0].length = sizeof(struct MR_CTRL_HB_HOST_MEM);
2170
2171 printk(KERN_WARNING "megasas: SR-IOV: Starting heartbeat for scsi%d\n",
2172 instance->host->host_no);
2173
2174 if (!megasas_issue_polled(instance, cmd)) {
2175 retval = 0;
2176 } else {
2177 printk(KERN_WARNING "megasas: SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2178 "_MEM_ALLOC DCMD timed out for scsi%d\n",
2179 instance->host->host_no);
2180 retval = 1;
2181 goto out;
2182 }
2183
2184
2185 if (dcmd->cmd_status) {
2186 printk(KERN_WARNING "megasas: SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2187 "_MEM_ALLOC DCMD failed with status 0x%x for scsi%d\n",
2188 dcmd->cmd_status,
2189 instance->host->host_no);
2190 retval = 1;
2191 goto out;
2192 }
2193
2194out:
2195 megasas_return_cmd(instance, cmd);
2196
2197 return retval;
2198}
2199
2200/* Handler for SR-IOV heartbeat */
2201void megasas_sriov_heartbeat_handler(unsigned long instance_addr)
2202{
2203 struct megasas_instance *instance =
2204 (struct megasas_instance *)instance_addr;
2205
2206 if (instance->hb_host_mem->HB.fwCounter !=
2207 instance->hb_host_mem->HB.driverCounter) {
2208 instance->hb_host_mem->HB.driverCounter =
2209 instance->hb_host_mem->HB.fwCounter;
2210 mod_timer(&instance->sriov_heartbeat_timer,
2211 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2212 } else {
2213 printk(KERN_WARNING "megasas: SR-IOV: Heartbeat never "
2214 "completed for scsi%d\n", instance->host->host_no);
2215 schedule_work(&instance->work_init);
2216 }
2217}
2218
c4a3e0a5
BS		 2219/**
2220 * megasas_wait_for_outstanding - Wait for all outstanding cmds
2221 * @instance: Adapter soft state
2222 *
25985edc 2223 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
c4a3e0a5
BS		 2224 * complete all its outstanding commands. Returns error if one or more IOs
2225 * are pending after this time period. It also marks the controller dead.
2226 */
2227static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2228{
2229 int i;
39a98554 2230 u32 reset_index;
c4a3e0a5 2231 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
39a98554 2232 u8 adprecovery;
2233 unsigned long flags;
2234 struct list_head clist_local;
2235 struct megasas_cmd *reset_cmd;
707e09bd
YB		 2236 u32 fw_state;
2237 u8 kill_adapter_flag;
39a98554 2238
2239 spin_lock_irqsave(&instance->hba_lock, flags);
2240 adprecovery = instance->adprecovery;
2241 spin_unlock_irqrestore(&instance->hba_lock, flags);
2242
2243 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
2244
2245 INIT_LIST_HEAD(&clist_local);
2246 spin_lock_irqsave(&instance->hba_lock, flags);
2247 list_splice_init(&instance->internal_reset_pending_q,
2248 &clist_local);
2249 spin_unlock_irqrestore(&instance->hba_lock, flags);
2250
2251 printk(KERN_NOTICE "megasas: HBA reset wait ...\n");
2252 for (i = 0; i < wait_time; i++) {
2253 msleep(1000);
2254 spin_lock_irqsave(&instance->hba_lock, flags);
2255 adprecovery = instance->adprecovery;
2256 spin_unlock_irqrestore(&instance->hba_lock, flags);
2257 if (adprecovery == MEGASAS_HBA_OPERATIONAL)
2258 break;
2259 }
2260
2261 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
2262 printk(KERN_NOTICE "megasas: reset: Stopping HBA.\n");
2263 spin_lock_irqsave(&instance->hba_lock, flags);
2264 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2265 spin_unlock_irqrestore(&instance->hba_lock, flags);
2266 return FAILED;
2267 }
2268
2269 reset_index = 0;
2270 while (!list_empty(&clist_local)) {
2271 reset_cmd = list_entry((&clist_local)->next,
2272 struct megasas_cmd, list);
2273 list_del_init(&reset_cmd->list);
2274 if (reset_cmd->scmd) {
2275 reset_cmd->scmd->result = DID_RESET << 16;
5cd049a5 2276 printk(KERN_NOTICE "%d:%p reset [%02x]\n",
39a98554 2277 reset_index, reset_cmd,
5cd049a5 2278 reset_cmd->scmd->cmnd[0]);
39a98554 2279
2280 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
2281 megasas_return_cmd(instance, reset_cmd);
2282 } else if (reset_cmd->sync_cmd) {
2283 printk(KERN_NOTICE "megasas:%p synch cmds"
2284 "reset queue\n",
2285 reset_cmd);
2286
2287 reset_cmd->cmd_status = ENODATA;
2288 instance->instancet->fire_cmd(instance,
2289 reset_cmd->frame_phys_addr,
2290 0, instance->reg_set);
2291 } else {
2292 printk(KERN_NOTICE "megasas: %p unexpected"
2293 "cmds lst\n",
2294 reset_cmd);
2295 }
2296 reset_index++;
2297 }
2298
2299 return SUCCESS;
2300 }
c4a3e0a5 2301
c007b8b2 2302 for (i = 0; i < resetwaittime; i++) {
c4a3e0a5 2303
e4a082c7
SP		 2304 int outstanding = atomic_read(&instance->fw_outstanding);
2305
2306 if (!outstanding)
c4a3e0a5
BS		 2307 break;
2308
2309 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2310 printk(KERN_NOTICE "megasas: [%2d]waiting for %d "
e4a082c7 2311 "commands to complete\n",i,outstanding);
7343eb65 2312 /*
2313 * Call cmd completion routine. Cmd to be
2314 * be completed directly without depending on isr.
2315 */
2316 megasas_complete_cmd_dpc((unsigned long)instance);
c4a3e0a5
BS		 2317 }
2318
2319 msleep(1000);
2320 }
2321
707e09bd
YB		 2322 i = 0;
2323 kill_adapter_flag = 0;
2324 do {
2325 fw_state = instance->instancet->read_fw_status_reg(
2326 instance->reg_set) & MFI_STATE_MASK;
2327 if ((fw_state == MFI_STATE_FAULT) &&
2328 (instance->disableOnlineCtrlReset == 0)) {
2329 if (i == 3) {
2330 kill_adapter_flag = 2;
2331 break;
2332 }
2333 megasas_do_ocr(instance);
2334 kill_adapter_flag = 1;
2335
2336 /* wait for 1 secs to let FW finish the pending cmds */
2337 msleep(1000);
2338 }
2339 i++;
2340 } while (i <= 3);
2341
2342 if (atomic_read(&instance->fw_outstanding) &&
2343 !kill_adapter_flag) {
2344 if (instance->disableOnlineCtrlReset == 0) {
2345
2346 megasas_do_ocr(instance);
2347
2348 /* wait for 5 secs to let FW finish the pending cmds */
2349 for (i = 0; i < wait_time; i++) {
2350 int outstanding =
2351 atomic_read(&instance->fw_outstanding);
2352 if (!outstanding)
2353 return SUCCESS;
2354 msleep(1000);
2355 }
2356 }
2357 }
2358
2359 if (atomic_read(&instance->fw_outstanding) ||
2360 (kill_adapter_flag == 2)) {
39a98554 2361 printk(KERN_NOTICE "megaraid_sas: pending cmds after reset\n");
e3bbff9f
SP		 2362 /*
2363 * Send signal to FW to stop processing any pending cmds.
2364 * The controller will be taken offline by the OS now.
2365 */
0c79e681
YB		 2366 if ((instance->pdev->device ==
2367 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2368 (instance->pdev->device ==
2369 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
2370 writel(MFI_STOP_ADP,
9c915a8c 2371 &instance->reg_set->doorbell);
0c79e681
YB		 2372 } else {
2373 writel(MFI_STOP_ADP,
e3bbff9f 2374 &instance->reg_set->inbound_doorbell);
0c79e681 2375 }
658dcedb 2376 megasas_dump_pending_frames(instance);
39a98554 2377 spin_lock_irqsave(&instance->hba_lock, flags);
2378 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2379 spin_unlock_irqrestore(&instance->hba_lock, flags);
c4a3e0a5
BS		 2380 return FAILED;
2381 }
2382
39a98554 2383 printk(KERN_NOTICE "megaraid_sas: no pending cmds after reset\n");
2384
c4a3e0a5
BS		 2385 return SUCCESS;
2386}
2387
2388/**
2389 * megasas_generic_reset - Generic reset routine
2390 * @scmd: Mid-layer SCSI command
2391 *
2392 * This routine implements a generic reset handler for device, bus and host
2393 * reset requests. Device, bus and host specific reset handlers can use this
2394 * function after they do their specific tasks.
2395 */
2396static int megasas_generic_reset(struct scsi_cmnd *scmd)
2397{
2398 int ret_val;
2399 struct megasas_instance *instance;
2400
2401 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2402
5cd049a5
CH		 2403 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2404 scmd->cmnd[0], scmd->retries);
c4a3e0a5 2405
39a98554 2406 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
c4a3e0a5
BS		 2407 printk(KERN_ERR "megasas: cannot recover from previous reset "
2408 "failures\n");
2409 return FAILED;
2410 }
2411
c4a3e0a5 2412 ret_val = megasas_wait_for_outstanding(instance);
c4a3e0a5
BS		 2413 if (ret_val == SUCCESS)
2414 printk(KERN_NOTICE "megasas: reset successful \n");
2415 else
2416 printk(KERN_ERR "megasas: failed to do reset\n");
2417
c4a3e0a5
BS		 2418 return ret_val;
2419}
2420
05e9ebbe
SP		 2421/**
2422 * megasas_reset_timer - quiesce the adapter if required
2423 * @scmd: scsi cmnd
2424 *
2425 * Sets the FW busy flag and reduces the host->can_queue if the
2426 * cmd has not been completed within the timeout period.
2427 */
2428static enum
242f9dcb 2429blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
05e9ebbe 2430{
05e9ebbe
SP		 2431 struct megasas_instance *instance;
2432 unsigned long flags;
2433
2434 if (time_after(jiffies, scmd->jiffies_at_alloc +
2435 (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) {
242f9dcb 2436 return BLK_EH_NOT_HANDLED;
05e9ebbe
SP		 2437 }
2438
f575c5d3 2439 instance = (struct megasas_instance *)scmd->device->host->hostdata;
05e9ebbe
SP		 2440 if (!(instance->flag & MEGASAS_FW_BUSY)) {
2441 /* FW is busy, throttle IO */
2442 spin_lock_irqsave(instance->host->host_lock, flags);
2443
c5daa6a9 2444 instance->host->can_queue = instance->throttlequeuedepth;
05e9ebbe
SP		 2445 instance->last_time = jiffies;
2446 instance->flag |= MEGASAS_FW_BUSY;
2447
2448 spin_unlock_irqrestore(instance->host->host_lock, flags);
2449 }
242f9dcb 2450 return BLK_EH_RESET_TIMER;
05e9ebbe
SP		 2451}
2452
c4a3e0a5
BS		 2453/**
2454 * megasas_reset_device - Device reset handler entry point
2455 */
2456static int megasas_reset_device(struct scsi_cmnd *scmd)
2457{
2458 int ret;
2459
2460 /*
2461 * First wait for all commands to complete
2462 */
2463 ret = megasas_generic_reset(scmd);
2464
2465 return ret;
2466}
2467
2468/**
2469 * megasas_reset_bus_host - Bus & host reset handler entry point
2470 */
2471static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
2472{
2473 int ret;
9c915a8c 2474 struct megasas_instance *instance;
2475 instance = (struct megasas_instance *)scmd->device->host->hostdata;
c4a3e0a5
BS		 2476
2477 /*
80682fa9 2478 * First wait for all commands to complete
c4a3e0a5 2479 */
36807e67 2480 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
229fe47c 2481 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
21d3c710
SS		 2482 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
2483 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
229fe47c 2484 ret = megasas_reset_fusion(scmd->device->host, 1);
9c915a8c 2485 else
2486 ret = megasas_generic_reset(scmd);
c4a3e0a5
BS		 2487
2488 return ret;
2489}
2490
cf62a0a5
SP		 2491/**
2492 * megasas_bios_param - Returns disk geometry for a disk
2493 * @sdev: device handle
2494 * @bdev: block device
2495 * @capacity: drive capacity
2496 * @geom: geometry parameters
2497 */
2498static int
2499megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
2500 sector_t capacity, int geom[])
2501{
2502 int heads;
2503 int sectors;
2504 sector_t cylinders;
2505 unsigned long tmp;
2506 /* Default heads (64) & sectors (32) */
2507 heads = 64;
2508 sectors = 32;
2509
2510 tmp = heads * sectors;
2511 cylinders = capacity;
2512
2513 sector_div(cylinders, tmp);
2514
2515 /*
2516 * Handle extended translation size for logical drives > 1Gb
2517 */
2518
2519 if (capacity >= 0x200000) {
2520 heads = 255;
2521 sectors = 63;
2522 tmp = heads*sectors;
2523 cylinders = capacity;
2524 sector_div(cylinders, tmp);
2525 }
2526
2527 geom[0] = heads;
2528 geom[1] = sectors;
2529 geom[2] = cylinders;
2530
2531 return 0;
2532}
2533
7e8a75f4
YB		 2534static void megasas_aen_polling(struct work_struct *work);
2535
c4a3e0a5
BS		 2536/**
2537 * megasas_service_aen - Processes an event notification
2538 * @instance: Adapter soft state
2539 * @cmd: AEN command completed by the ISR
2540 *
2541 * For AEN, driver sends a command down to FW that is held by the FW till an
2542 * event occurs. When an event of interest occurs, FW completes the command
2543 * that it was previously holding.
2544 *
2545 * This routines sends SIGIO signal to processes that have registered with the
2546 * driver for AEN.
2547 */
2548static void
2549megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
2550{
c3518837 2551 unsigned long flags;
c4a3e0a5
BS		 2552 /*
2553 * Don't signal app if it is just an aborted previously registered aen
2554 */
c3518837
YB		 2555 if ((!cmd->abort_aen) && (instance->unload == 0)) {
2556 spin_lock_irqsave(&poll_aen_lock, flags);
2557 megasas_poll_wait_aen = 1;
2558 spin_unlock_irqrestore(&poll_aen_lock, flags);
2559 wake_up(&megasas_poll_wait);
c4a3e0a5 2560 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
c3518837 2561 }
c4a3e0a5
BS		 2562 else
2563 cmd->abort_aen = 0;
2564
2565 instance->aen_cmd = NULL;
90dc9d98
SS		 2566
2567 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
2568 megasas_return_mfi_mpt_pthr(instance, cmd,
2569 cmd->mpt_pthr_cmd_blocked);
2570 else
2571 megasas_return_cmd(instance, cmd);
7e8a75f4 2572
39a98554 2573 if ((instance->unload == 0) &&
2574 ((instance->issuepend_done == 1))) {
7e8a75f4
YB		 2575 struct megasas_aen_event *ev;
2576 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
2577 if (!ev) {
2578 printk(KERN_ERR "megasas_service_aen: out of memory\n");
2579 } else {
2580 ev->instance = instance;
2581 instance->ev = ev;
c1d390d8
XF		 2582 INIT_DELAYED_WORK(&ev->hotplug_work,
2583 megasas_aen_polling);
2584 schedule_delayed_work(&ev->hotplug_work, 0);
7e8a75f4
YB		 2585 }
2586 }
c4a3e0a5
BS		 2587}
2588
4bcde509 2589static int megasas_change_queue_depth(struct scsi_device *sdev,
2590 int queue_depth, int reason)
2591{
2592 if (reason != SCSI_QDEPTH_DEFAULT)
2593 return -EOPNOTSUPP;
2594
2595 if (queue_depth > sdev->host->can_queue)
2596 queue_depth = sdev->host->can_queue;
c8b09f6f 2597 scsi_adjust_queue_depth(sdev, queue_depth);
4bcde509 2598
2599 return queue_depth;
2600}
2601
fc62b3fc
SS		 2602static ssize_t
2603megasas_fw_crash_buffer_store(struct device *cdev,
2604 struct device_attribute *attr, const char *buf, size_t count)
2605{
2606 struct Scsi_Host *shost = class_to_shost(cdev);
2607 struct megasas_instance *instance =
2608 (struct megasas_instance *) shost->hostdata;
2609 int val = 0;
2610 unsigned long flags;
2611
2612 if (kstrtoint(buf, 0, &val) != 0)
2613 return -EINVAL;
2614
2615 spin_lock_irqsave(&instance->crashdump_lock, flags);
2616 instance->fw_crash_buffer_offset = val;
2617 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2618 return strlen(buf);
2619}
2620
2621static ssize_t
2622megasas_fw_crash_buffer_show(struct device *cdev,
2623 struct device_attribute *attr, char *buf)
2624{
2625 struct Scsi_Host *shost = class_to_shost(cdev);
2626 struct megasas_instance *instance =
2627 (struct megasas_instance *) shost->hostdata;
2628 u32 size;
2629 unsigned long buff_addr;
2630 unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
2631 unsigned long src_addr;
2632 unsigned long flags;
2633 u32 buff_offset;
2634
2635 spin_lock_irqsave(&instance->crashdump_lock, flags);
2636 buff_offset = instance->fw_crash_buffer_offset;
2637 if (!instance->crash_dump_buf &&
2638 !((instance->fw_crash_state == AVAILABLE) ||
2639 (instance->fw_crash_state == COPYING))) {
2640 dev_err(&instance->pdev->dev,
2641 "Firmware crash dump is not available\n");
2642 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2643 return -EINVAL;
2644 }
2645
2646 buff_addr = (unsigned long) buf;
2647
2648 if (buff_offset >
2649 (instance->fw_crash_buffer_size * dmachunk)) {
2650 dev_err(&instance->pdev->dev,
2651 "Firmware crash dump offset is out of range\n");
2652 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2653 return 0;
2654 }
2655
2656 size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
2657 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
2658
2659 src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
2660 (buff_offset % dmachunk);
2661 memcpy(buf, (void *)src_addr, size);
2662 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2663
2664 return size;
2665}
2666
2667static ssize_t
2668megasas_fw_crash_buffer_size_show(struct device *cdev,
2669 struct device_attribute *attr, char *buf)
2670{
2671 struct Scsi_Host *shost = class_to_shost(cdev);
2672 struct megasas_instance *instance =
2673 (struct megasas_instance *) shost->hostdata;
2674
2675 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
2676 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
2677}
2678
2679static ssize_t
2680megasas_fw_crash_state_store(struct device *cdev,
2681 struct device_attribute *attr, const char *buf, size_t count)
2682{
2683 struct Scsi_Host *shost = class_to_shost(cdev);
2684 struct megasas_instance *instance =
2685 (struct megasas_instance *) shost->hostdata;
2686 int val = 0;
2687 unsigned long flags;
2688
2689 if (kstrtoint(buf, 0, &val) != 0)
2690 return -EINVAL;
2691
2692 if ((val <= AVAILABLE || val > COPY_ERROR)) {
2693 dev_err(&instance->pdev->dev, "application updates invalid "
2694 "firmware crash state\n");
2695 return -EINVAL;
2696 }
2697
2698 instance->fw_crash_state = val;
2699
2700 if ((val == COPIED) || (val == COPY_ERROR)) {
2701 spin_lock_irqsave(&instance->crashdump_lock, flags);
2702 megasas_free_host_crash_buffer(instance);
2703 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2704 if (val == COPY_ERROR)
2705 dev_info(&instance->pdev->dev, "application failed to "
2706 "copy Firmware crash dump\n");
2707 else
2708 dev_info(&instance->pdev->dev, "Firmware crash dump "
2709 "copied successfully\n");
2710 }
2711 return strlen(buf);
2712}
2713
2714static ssize_t
2715megasas_fw_crash_state_show(struct device *cdev,
2716 struct device_attribute *attr, char *buf)
2717{
2718 struct Scsi_Host *shost = class_to_shost(cdev);
2719 struct megasas_instance *instance =
2720 (struct megasas_instance *) shost->hostdata;
2721 return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
2722}
2723
2724static ssize_t
2725megasas_page_size_show(struct device *cdev,
2726 struct device_attribute *attr, char *buf)
2727{
2728 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
2729}
2730
2731static DEVICE_ATTR(fw_crash_buffer, S_IRUGO | S_IWUSR,
2732 megasas_fw_crash_buffer_show, megasas_fw_crash_buffer_store);
2733static DEVICE_ATTR(fw_crash_buffer_size, S_IRUGO,
2734 megasas_fw_crash_buffer_size_show, NULL);
2735static DEVICE_ATTR(fw_crash_state, S_IRUGO | S_IWUSR,
2736 megasas_fw_crash_state_show, megasas_fw_crash_state_store);
2737static DEVICE_ATTR(page_size, S_IRUGO,
2738 megasas_page_size_show, NULL);
2739
2740struct device_attribute *megaraid_host_attrs[] = {
2741 &dev_attr_fw_crash_buffer_size,
2742 &dev_attr_fw_crash_buffer,
2743 &dev_attr_fw_crash_state,
2744 &dev_attr_page_size,
2745 NULL,
2746};
2747
c4a3e0a5
BS		 2748/*
2749 * Scsi host template for megaraid_sas driver
2750 */
2751static struct scsi_host_template megasas_template = {
2752
2753 .module = THIS_MODULE,
f28cd7cf 2754 .name = "LSI SAS based MegaRAID driver",
c4a3e0a5 2755 .proc_name = "megaraid_sas",
147aab6a 2756 .slave_configure = megasas_slave_configure,
044833b5 2757 .slave_alloc = megasas_slave_alloc,
c4a3e0a5
BS		 2758 .queuecommand = megasas_queue_command,
2759 .eh_device_reset_handler = megasas_reset_device,
2760 .eh_bus_reset_handler = megasas_reset_bus_host,
2761 .eh_host_reset_handler = megasas_reset_bus_host,
05e9ebbe 2762 .eh_timed_out = megasas_reset_timer,
fc62b3fc 2763 .shost_attrs = megaraid_host_attrs,
cf62a0a5 2764 .bios_param = megasas_bios_param,
c4a3e0a5 2765 .use_clustering = ENABLE_CLUSTERING,
4bcde509 2766 .change_queue_depth = megasas_change_queue_depth,
54b2b50c 2767 .no_write_same = 1,
c4a3e0a5
BS		 2768};
2769
2770/**
2771 * megasas_complete_int_cmd - Completes an internal command
2772 * @instance: Adapter soft state
2773 * @cmd: Command to be completed
2774 *
2775 * The megasas_issue_blocked_cmd() function waits for a command to complete
2776 * after it issues a command. This function wakes up that waiting routine by
2777 * calling wake_up() on the wait queue.
2778 */
2779static void
2780megasas_complete_int_cmd(struct megasas_instance *instance,
2781 struct megasas_cmd *cmd)
2782{
2783 cmd->cmd_status = cmd->frame->io.cmd_status;
2784
2785 if (cmd->cmd_status == ENODATA) {
2786 cmd->cmd_status = 0;
2787 }
2788 wake_up(&instance->int_cmd_wait_q);
2789}
2790
2791/**
2792 * megasas_complete_abort - Completes aborting a command
2793 * @instance: Adapter soft state
2794 * @cmd: Cmd that was issued to abort another cmd
2795 *
0d49016b 2796 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
2797 * after it issues an abort on a previously issued command. This function
c4a3e0a5
BS		 2798 * wakes up all functions waiting on the same wait queue.
2799 */
2800static void
2801megasas_complete_abort(struct megasas_instance *instance,
2802 struct megasas_cmd *cmd)
2803{
2804 if (cmd->sync_cmd) {
2805 cmd->sync_cmd = 0;
2806 cmd->cmd_status = 0;
2807 wake_up(&instance->abort_cmd_wait_q);
2808 }
2809
2810 return;
2811}
2812
c4a3e0a5
BS		 2813/**
2814 * megasas_complete_cmd - Completes a command
2815 * @instance: Adapter soft state
2816 * @cmd: Command to be completed
0d49016b 2817 * @alt_status: If non-zero, use this value as status to
c4a3e0a5
BS		 2818 * SCSI mid-layer instead of the value returned
2819 * by the FW. This should be used if caller wants
2820 * an alternate status (as in the case of aborted
2821 * commands)
2822 */
9c915a8c 2823void
c4a3e0a5
BS		 2824megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
2825 u8 alt_status)
2826{
2827 int exception = 0;
2828 struct megasas_header *hdr = &cmd->frame->hdr;
c3518837 2829 unsigned long flags;
9c915a8c 2830 struct fusion_context *fusion = instance->ctrl_context;
94cd65dd 2831 u32 opcode;
c4a3e0a5 2832
39a98554 2833 /* flag for the retry reset */
2834 cmd->retry_for_fw_reset = 0;
2835
05e9ebbe
SP		 2836 if (cmd->scmd)
2837 cmd->scmd->SCp.ptr = NULL;
c4a3e0a5
BS		 2838
2839 switch (hdr->cmd) {
e5f93a36 2840 case MFI_CMD_INVALID:
2841 /* Some older 1068 controller FW may keep a pended
2842 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
2843 when booting the kdump kernel. Ignore this command to
2844 prevent a kernel panic on shutdown of the kdump kernel. */
2845 printk(KERN_WARNING "megaraid_sas: MFI_CMD_INVALID command "
2846 "completed.\n");
2847 printk(KERN_WARNING "megaraid_sas: If you have a controller "
2848 "other than PERC5, please upgrade your firmware.\n");
2849 break;
c4a3e0a5
BS		 2850 case MFI_CMD_PD_SCSI_IO:
2851 case MFI_CMD_LD_SCSI_IO:
2852
2853 /*
2854 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
2855 * issued either through an IO path or an IOCTL path. If it
2856 * was via IOCTL, we will send it to internal completion.
2857 */
2858 if (cmd->sync_cmd) {
2859 cmd->sync_cmd = 0;
2860 megasas_complete_int_cmd(instance, cmd);
2861 break;
2862 }
2863
c4a3e0a5
BS		 2864 case MFI_CMD_LD_READ:
2865 case MFI_CMD_LD_WRITE:
2866
2867 if (alt_status) {
2868 cmd->scmd->result = alt_status << 16;
2869 exception = 1;
2870 }
2871
2872 if (exception) {
2873
e4a082c7 2874 atomic_dec(&instance->fw_outstanding);
c4a3e0a5 2875
155d98f0 2876 scsi_dma_unmap(cmd->scmd);
c4a3e0a5
BS		 2877 cmd->scmd->scsi_done(cmd->scmd);
2878 megasas_return_cmd(instance, cmd);
2879
2880 break;
2881 }
2882
2883 switch (hdr->cmd_status) {
2884
2885 case MFI_STAT_OK:
2886 cmd->scmd->result = DID_OK << 16;
2887 break;
2888
2889 case MFI_STAT_SCSI_IO_FAILED:
2890 case MFI_STAT_LD_INIT_IN_PROGRESS:
2891 cmd->scmd->result =
2892 (DID_ERROR << 16) | hdr->scsi_status;
2893 break;
2894
2895 case MFI_STAT_SCSI_DONE_WITH_ERROR:
2896
2897 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
2898
2899 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
2900 memset(cmd->scmd->sense_buffer, 0,
2901 SCSI_SENSE_BUFFERSIZE);
2902 memcpy(cmd->scmd->sense_buffer, cmd->sense,
2903 hdr->sense_len);
2904
2905 cmd->scmd->result |= DRIVER_SENSE << 24;
2906 }
2907
2908 break;
2909
2910 case MFI_STAT_LD_OFFLINE:
2911 case MFI_STAT_DEVICE_NOT_FOUND:
2912 cmd->scmd->result = DID_BAD_TARGET << 16;
2913 break;
2914
2915 default:
2916 printk(KERN_DEBUG "megasas: MFI FW status %#x\n",
2917 hdr->cmd_status);
2918 cmd->scmd->result = DID_ERROR << 16;
2919 break;
2920 }
2921
e4a082c7 2922 atomic_dec(&instance->fw_outstanding);
c4a3e0a5 2923
155d98f0 2924 scsi_dma_unmap(cmd->scmd);
c4a3e0a5
BS		 2925 cmd->scmd->scsi_done(cmd->scmd);
2926 megasas_return_cmd(instance, cmd);
2927
2928 break;
2929
2930 case MFI_CMD_SMP:
2931 case MFI_CMD_STP:
2932 case MFI_CMD_DCMD:
94cd65dd 2933 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
9c915a8c 2934 /* Check for LD map update */
94cd65dd
SS		 2935 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
2936 && (cmd->frame->dcmd.mbox.b[1] == 1)) {
bc93d425 2937 fusion->fast_path_io = 0;
9c915a8c 2938 spin_lock_irqsave(instance->host->host_lock, flags);
2939 if (cmd->frame->hdr.cmd_status != 0) {
2940 if (cmd->frame->hdr.cmd_status !=
2941 MFI_STAT_NOT_FOUND)
2942 printk(KERN_WARNING "megasas: map sync"
2943 "failed, status = 0x%x.\n",
2944 cmd->frame->hdr.cmd_status);
2945 else {
90dc9d98
SS		 2946 megasas_return_mfi_mpt_pthr(instance,
2947 cmd, cmd->mpt_pthr_cmd_blocked);
9c915a8c 2948 spin_unlock_irqrestore(
2949 instance->host->host_lock,
2950 flags);
2951 break;
2952 }
2953 } else
2954 instance->map_id++;
90dc9d98
SS		 2955 megasas_return_mfi_mpt_pthr(instance, cmd,
2956 cmd->mpt_pthr_cmd_blocked);
bc93d425
SS		 2957
2958 /*
2959 * Set fast path IO to ZERO.
2960 * Validate Map will set proper value.
2961 * Meanwhile all IOs will go as LD IO.
2962 */
2963 if (MR_ValidateMapInfo(instance))
9c915a8c 2964 fusion->fast_path_io = 1;
2965 else
2966 fusion->fast_path_io = 0;
2967 megasas_sync_map_info(instance);
2968 spin_unlock_irqrestore(instance->host->host_lock,
2969 flags);
2970 break;
2971 }
94cd65dd
SS		 2972 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
2973 opcode == MR_DCMD_CTRL_EVENT_GET) {
c3518837
YB		 2974 spin_lock_irqsave(&poll_aen_lock, flags);
2975 megasas_poll_wait_aen = 0;
2976 spin_unlock_irqrestore(&poll_aen_lock, flags);
2977 }
c4a3e0a5
BS		 2978
2979 /*
2980 * See if got an event notification
2981 */
94cd65dd 2982 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
c4a3e0a5
BS		 2983 megasas_service_aen(instance, cmd);
2984 else
2985 megasas_complete_int_cmd(instance, cmd);
2986
2987 break;
2988
2989 case MFI_CMD_ABORT:
2990 /*
2991 * Cmd issued to abort another cmd returned
2992 */
2993 megasas_complete_abort(instance, cmd);
2994 break;
2995
2996 default:
2997 printk("megasas: Unknown command completed! [0x%X]\n",
2998 hdr->cmd);
2999 break;
3000 }
3001}
3002
39a98554 3003/**
3004 * megasas_issue_pending_cmds_again - issue all pending cmds
3005 * in FW again because of the fw reset
3006 * @instance: Adapter soft state
3007 */
3008static inline void
3009megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3010{
3011 struct megasas_cmd *cmd;
3012 struct list_head clist_local;
3013 union megasas_evt_class_locale class_locale;
3014 unsigned long flags;
3015 u32 seq_num;
3016
3017 INIT_LIST_HEAD(&clist_local);
3018 spin_lock_irqsave(&instance->hba_lock, flags);
3019 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3020 spin_unlock_irqrestore(&instance->hba_lock, flags);
3021
3022 while (!list_empty(&clist_local)) {
3023 cmd = list_entry((&clist_local)->next,
3024 struct megasas_cmd, list);
3025 list_del_init(&cmd->list);
3026
3027 if (cmd->sync_cmd || cmd->scmd) {
3028 printk(KERN_NOTICE "megaraid_sas: command %p, %p:%d"
3029 "detected to be pending while HBA reset.\n",
3030 cmd, cmd->scmd, cmd->sync_cmd);
3031
3032 cmd->retry_for_fw_reset++;
3033
3034 if (cmd->retry_for_fw_reset == 3) {
3035 printk(KERN_NOTICE "megaraid_sas: cmd %p, %p:%d"
3036 "was tried multiple times during reset."
3037 "Shutting down the HBA\n",
3038 cmd, cmd->scmd, cmd->sync_cmd);
3039 megaraid_sas_kill_hba(instance);
3040
3041 instance->adprecovery =
3042 MEGASAS_HW_CRITICAL_ERROR;
3043 return;
3044 }
3045 }
3046
3047 if (cmd->sync_cmd == 1) {
3048 if (cmd->scmd) {
3049 printk(KERN_NOTICE "megaraid_sas: unexpected"
3050 "cmd attached to internal command!\n");
3051 }
3052 printk(KERN_NOTICE "megasas: %p synchronous cmd"
3053 "on the internal reset queue,"
3054 "issue it again.\n", cmd);
3055 cmd->cmd_status = ENODATA;
3056 instance->instancet->fire_cmd(instance,
3057 cmd->frame_phys_addr ,
3058 0, instance->reg_set);
3059 } else if (cmd->scmd) {
5cd049a5 3060 printk(KERN_NOTICE "megasas: %p scsi cmd [%02x]"
39a98554 3061 "detected on the internal queue, issue again.\n",
5cd049a5 3062 cmd, cmd->scmd->cmnd[0]);
39a98554 3063
3064 atomic_inc(&instance->fw_outstanding);
3065 instance->instancet->fire_cmd(instance,
3066 cmd->frame_phys_addr,
3067 cmd->frame_count-1, instance->reg_set);
3068 } else {
3069 printk(KERN_NOTICE "megasas: %p unexpected cmd on the"
3070 "internal reset defer list while re-issue!!\n",
3071 cmd);
3072 }
3073 }
3074
3075 if (instance->aen_cmd) {
3076 printk(KERN_NOTICE "megaraid_sas: aen_cmd in def process\n");
3077 megasas_return_cmd(instance, instance->aen_cmd);
3078
3079 instance->aen_cmd = NULL;
3080 }
3081
3082 /*
3083 * Initiate AEN (Asynchronous Event Notification)
3084 */
3085 seq_num = instance->last_seq_num;
3086 class_locale.members.reserved = 0;
3087 class_locale.members.locale = MR_EVT_LOCALE_ALL;
3088 class_locale.members.class = MR_EVT_CLASS_DEBUG;
3089
3090 megasas_register_aen(instance, seq_num, class_locale.word);
3091}
3092
3093/**
3094 * Move the internal reset pending commands to a deferred queue.
3095 *
3096 * We move the commands pending at internal reset time to a
3097 * pending queue. This queue would be flushed after successful
3098 * completion of the internal reset sequence. if the internal reset
3099 * did not complete in time, the kernel reset handler would flush
3100 * these commands.
3101 **/
3102static void
3103megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3104{
3105 struct megasas_cmd *cmd;
3106 int i;
3107 u32 max_cmd = instance->max_fw_cmds;
3108 u32 defer_index;
3109 unsigned long flags;
3110
3111 defer_index = 0;
90dc9d98 3112 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
39a98554 3113 for (i = 0; i < max_cmd; i++) {
3114 cmd = instance->cmd_list[i];
3115 if (cmd->sync_cmd == 1 || cmd->scmd) {
3116 printk(KERN_NOTICE "megasas: moving cmd[%d]:%p:%d:%p"
3117 "on the defer queue as internal\n",
3118 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3119
3120 if (!list_empty(&cmd->list)) {
3121 printk(KERN_NOTICE "megaraid_sas: ERROR while"
3122 " moving this cmd:%p, %d %p, it was"
3123 "discovered on some list?\n",
3124 cmd, cmd->sync_cmd, cmd->scmd);
3125
3126 list_del_init(&cmd->list);
3127 }
3128 defer_index++;
3129 list_add_tail(&cmd->list,
3130 &instance->internal_reset_pending_q);
3131 }
3132 }
90dc9d98 3133 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
39a98554 3134}
3135
3136
3137static void
3138process_fw_state_change_wq(struct work_struct *work)
3139{
3140 struct megasas_instance *instance =
3141 container_of(work, struct megasas_instance, work_init);
3142 u32 wait;
3143 unsigned long flags;
3144
3145 if (instance->adprecovery != MEGASAS_ADPRESET_SM_INFAULT) {
3146 printk(KERN_NOTICE "megaraid_sas: error, recovery st %x \n",
3147 instance->adprecovery);
3148 return ;
3149 }
3150
3151 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) {
3152 printk(KERN_NOTICE "megaraid_sas: FW detected to be in fault"
3153 "state, restarting it...\n");
3154
d46a3ad6 3155 instance->instancet->disable_intr(instance);
39a98554 3156 atomic_set(&instance->fw_outstanding, 0);
3157
3158 atomic_set(&instance->fw_reset_no_pci_access, 1);
3159 instance->instancet->adp_reset(instance, instance->reg_set);
3160 atomic_set(&instance->fw_reset_no_pci_access, 0 );
3161
3162 printk(KERN_NOTICE "megaraid_sas: FW restarted successfully,"
3163 "initiating next stage...\n");
3164
3165 printk(KERN_NOTICE "megaraid_sas: HBA recovery state machine,"
3166 "state 2 starting...\n");
3167
3168 /*waitting for about 20 second before start the second init*/
3169 for (wait = 0; wait < 30; wait++) {
3170 msleep(1000);
3171 }
3172
058a8fac 3173 if (megasas_transition_to_ready(instance, 1)) {
39a98554 3174 printk(KERN_NOTICE "megaraid_sas:adapter not ready\n");
3175
3176 megaraid_sas_kill_hba(instance);
3177 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
3178 return ;
3179 }
3180
3181 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
3182 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
3183 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
3184 ) {
3185 *instance->consumer = *instance->producer;
3186 } else {
3187 *instance->consumer = 0;
3188 *instance->producer = 0;
3189 }
3190
3191 megasas_issue_init_mfi(instance);
3192
3193 spin_lock_irqsave(&instance->hba_lock, flags);
3194 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
3195 spin_unlock_irqrestore(&instance->hba_lock, flags);
d46a3ad6 3196 instance->instancet->enable_intr(instance);
39a98554 3197
3198 megasas_issue_pending_cmds_again(instance);
3199 instance->issuepend_done = 1;
3200 }
3201 return ;
3202}
3203
c4a3e0a5
BS		 3204/**
3205 * megasas_deplete_reply_queue - Processes all completed commands
3206 * @instance: Adapter soft state
3207 * @alt_status: Alternate status to be returned to
3208 * SCSI mid-layer instead of the status
3209 * returned by the FW
39a98554 3210 * Note: this must be called with hba lock held
c4a3e0a5 3211 */
858119e1 3212static int
39a98554 3213megasas_deplete_reply_queue(struct megasas_instance *instance,
3214 u8 alt_status)
c4a3e0a5 3215{
39a98554 3216 u32 mfiStatus;
3217 u32 fw_state;
3218
3219 if ((mfiStatus = instance->instancet->check_reset(instance,
3220 instance->reg_set)) == 1) {
3221 return IRQ_HANDLED;
3222 }
3223
3224 if ((mfiStatus = instance->instancet->clear_intr(
3225 instance->reg_set)
3226 ) == 0) {
e1419191 3227 /* Hardware may not set outbound_intr_status in MSI-X mode */
c8e858fe 3228 if (!instance->msix_vectors)
e1419191 3229 return IRQ_NONE;
39a98554 3230 }
3231
3232 instance->mfiStatus = mfiStatus;
3233
3234 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
3235 fw_state = instance->instancet->read_fw_status_reg(
3236 instance->reg_set) & MFI_STATE_MASK;
3237
3238 if (fw_state != MFI_STATE_FAULT) {
3239 printk(KERN_NOTICE "megaraid_sas: fw state:%x\n",
3240 fw_state);
3241 }
3242
3243 if ((fw_state == MFI_STATE_FAULT) &&
3244 (instance->disableOnlineCtrlReset == 0)) {
3245 printk(KERN_NOTICE "megaraid_sas: wait adp restart\n");
3246
3247 if ((instance->pdev->device ==
3248 PCI_DEVICE_ID_LSI_SAS1064R) ||
3249 (instance->pdev->device ==
3250 PCI_DEVICE_ID_DELL_PERC5) ||
3251 (instance->pdev->device ==
3252 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
3253
3254 *instance->consumer =
94cd65dd 3255 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
39a98554 3256 }
3257
3258
d46a3ad6 3259 instance->instancet->disable_intr(instance);
39a98554 3260 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
3261 instance->issuepend_done = 0;
3262
3263 atomic_set(&instance->fw_outstanding, 0);
3264 megasas_internal_reset_defer_cmds(instance);
3265
3266 printk(KERN_NOTICE "megasas: fwState=%x, stage:%d\n",
3267 fw_state, instance->adprecovery);
3268
3269 schedule_work(&instance->work_init);
3270 return IRQ_HANDLED;
3271
3272 } else {
3273 printk(KERN_NOTICE "megasas: fwstate:%x, dis_OCR=%x\n",
3274 fw_state, instance->disableOnlineCtrlReset);
3275 }
3276 }
c4a3e0a5 3277
5d018ad0 3278 tasklet_schedule(&instance->isr_tasklet);
c4a3e0a5
BS		 3279 return IRQ_HANDLED;
3280}
c4a3e0a5
BS		 3281/**
3282 * megasas_isr - isr entry point
3283 */
7d12e780 3284static irqreturn_t megasas_isr(int irq, void *devp)
c4a3e0a5 3285{
c8e858fe 3286 struct megasas_irq_context *irq_context = devp;
3287 struct megasas_instance *instance = irq_context->instance;
39a98554 3288 unsigned long flags;
3289 irqreturn_t rc;
3290
c8e858fe 3291 if (atomic_read(&instance->fw_reset_no_pci_access))
39a98554 3292 return IRQ_HANDLED;
3293
39a98554 3294 spin_lock_irqsave(&instance->hba_lock, flags);
3295 rc = megasas_deplete_reply_queue(instance, DID_OK);
3296 spin_unlock_irqrestore(&instance->hba_lock, flags);
3297
3298 return rc;
c4a3e0a5
BS		 3299}
3300
3301/**
3302 * megasas_transition_to_ready - Move the FW to READY state
1341c939 3303 * @instance: Adapter soft state
c4a3e0a5
BS		 3304 *
3305 * During the initialization, FW passes can potentially be in any one of
3306 * several possible states. If the FW in operational, waiting-for-handshake
3307 * states, driver must take steps to bring it to ready state. Otherwise, it
3308 * has to wait for the ready state.
3309 */
9c915a8c 3310int
058a8fac 3311megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
c4a3e0a5
BS		 3312{
3313 int i;
3314 u8 max_wait;
3315 u32 fw_state;
3316 u32 cur_state;
7218df69 3317 u32 abs_state, curr_abs_state;
c4a3e0a5 3318
bc6ac5e8
TH		 3319 abs_state = instance->instancet->read_fw_status_reg(instance->reg_set);
3320 fw_state = abs_state & MFI_STATE_MASK;
c4a3e0a5 3321
e3bbff9f 3322 if (fw_state != MFI_STATE_READY)
0d49016b 3323 printk(KERN_INFO "megasas: Waiting for FW to come to ready"
3324 " state\n");
e3bbff9f 3325
c4a3e0a5
BS		 3326 while (fw_state != MFI_STATE_READY) {
3327
c4a3e0a5
BS		 3328 switch (fw_state) {
3329
3330 case MFI_STATE_FAULT:
c4a3e0a5 3331 printk(KERN_DEBUG "megasas: FW in FAULT state!!\n");
058a8fac 3332 if (ocr) {
3333 max_wait = MEGASAS_RESET_WAIT_TIME;
3334 cur_state = MFI_STATE_FAULT;
3335 break;
3336 } else
3337 return -ENODEV;
c4a3e0a5
BS		 3338
3339 case MFI_STATE_WAIT_HANDSHAKE:
3340 /*
3341 * Set the CLR bit in inbound doorbell
3342 */
0c79e681 3343 if ((instance->pdev->device ==
87911122
YB		 3344 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3345 (instance->pdev->device ==
9c915a8c 3346 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3347 (instance->pdev->device ==
21d3c710 3348 PCI_DEVICE_ID_LSI_FUSION) ||
36807e67 3349 (instance->pdev->device ==
229fe47c 3350 PCI_DEVICE_ID_LSI_PLASMA) ||
3351 (instance->pdev->device ==
21d3c710
SS		 3352 PCI_DEVICE_ID_LSI_INVADER) ||
3353 (instance->pdev->device ==
3354 PCI_DEVICE_ID_LSI_FURY)) {
87911122
YB		 3355 writel(
3356 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
9c915a8c 3357 &instance->reg_set->doorbell);
87911122
YB		 3358 } else {
3359 writel(
3360 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3361 &instance->reg_set->inbound_doorbell);
3362 }
c4a3e0a5 3363
7218df69 3364 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 3365 cur_state = MFI_STATE_WAIT_HANDSHAKE;
3366 break;
3367
e3bbff9f 3368 case MFI_STATE_BOOT_MESSAGE_PENDING:
87911122 3369 if ((instance->pdev->device ==
9c915a8c 3370 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3371 (instance->pdev->device ==
3372 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3373 (instance->pdev->device ==
36807e67 3374 PCI_DEVICE_ID_LSI_FUSION) ||
229fe47c 3375 (instance->pdev->device ==
3376 PCI_DEVICE_ID_LSI_PLASMA) ||
36807e67 3377 (instance->pdev->device ==
21d3c710
SS		 3378 PCI_DEVICE_ID_LSI_INVADER) ||
3379 (instance->pdev->device ==
3380 PCI_DEVICE_ID_LSI_FURY)) {
87911122 3381 writel(MFI_INIT_HOTPLUG,
9c915a8c 3382 &instance->reg_set->doorbell);
87911122
YB		 3383 } else
3384 writel(MFI_INIT_HOTPLUG,
3385 &instance->reg_set->inbound_doorbell);
e3bbff9f 3386
7218df69 3387 max_wait = MEGASAS_RESET_WAIT_TIME;
e3bbff9f
SP		 3388 cur_state = MFI_STATE_BOOT_MESSAGE_PENDING;
3389 break;
3390
c4a3e0a5
BS		 3391 case MFI_STATE_OPERATIONAL:
3392 /*
e3bbff9f 3393 * Bring it to READY state; assuming max wait 10 secs
c4a3e0a5 3394 */
d46a3ad6 3395 instance->instancet->disable_intr(instance);
87911122
YB		 3396 if ((instance->pdev->device ==
3397 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3398 (instance->pdev->device ==
9c915a8c 3399 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3400 (instance->pdev->device
36807e67 3401 == PCI_DEVICE_ID_LSI_FUSION) ||
229fe47c 3402 (instance->pdev->device
3403 == PCI_DEVICE_ID_LSI_PLASMA) ||
36807e67 3404 (instance->pdev->device
21d3c710
SS		 3405 == PCI_DEVICE_ID_LSI_INVADER) ||
3406 (instance->pdev->device
3407 == PCI_DEVICE_ID_LSI_FURY)) {
87911122 3408 writel(MFI_RESET_FLAGS,
9c915a8c 3409 &instance->reg_set->doorbell);
36807e67 3410 if ((instance->pdev->device ==
21d3c710
SS		 3411 PCI_DEVICE_ID_LSI_FUSION) ||
3412 (instance->pdev->device ==
229fe47c 3413 PCI_DEVICE_ID_LSI_PLASMA) ||
3414 (instance->pdev->device ==
21d3c710
SS		 3415 PCI_DEVICE_ID_LSI_INVADER) ||
3416 (instance->pdev->device ==
3417 PCI_DEVICE_ID_LSI_FURY)) {
9c915a8c 3418 for (i = 0; i < (10 * 1000); i += 20) {
3419 if (readl(
3420 &instance->
3421 reg_set->
3422 doorbell) & 1)
3423 msleep(20);
3424 else
3425 break;
3426 }
3427 }
87911122
YB		 3428 } else
3429 writel(MFI_RESET_FLAGS,
3430 &instance->reg_set->inbound_doorbell);
c4a3e0a5 3431
7218df69 3432 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 3433 cur_state = MFI_STATE_OPERATIONAL;
3434 break;
3435
3436 case MFI_STATE_UNDEFINED:
3437 /*
3438 * This state should not last for more than 2 seconds
3439 */
7218df69 3440 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 3441 cur_state = MFI_STATE_UNDEFINED;
3442 break;
3443
3444 case MFI_STATE_BB_INIT:
7218df69 3445 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 3446 cur_state = MFI_STATE_BB_INIT;
3447 break;
3448
3449 case MFI_STATE_FW_INIT:
7218df69 3450 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 3451 cur_state = MFI_STATE_FW_INIT;
3452 break;
3453
3454 case MFI_STATE_FW_INIT_2:
7218df69 3455 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 3456 cur_state = MFI_STATE_FW_INIT_2;
3457 break;
3458
3459 case MFI_STATE_DEVICE_SCAN:
7218df69 3460 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 3461 cur_state = MFI_STATE_DEVICE_SCAN;
3462 break;
3463
3464 case MFI_STATE_FLUSH_CACHE:
7218df69 3465 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 3466 cur_state = MFI_STATE_FLUSH_CACHE;
3467 break;
3468
3469 default:
3470 printk(KERN_DEBUG "megasas: Unknown state 0x%x\n",
3471 fw_state);
3472 return -ENODEV;
3473 }
3474
3475 /*
3476 * The cur_state should not last for more than max_wait secs
3477 */
3478 for (i = 0; i < (max_wait * 1000); i++) {
bc6ac5e8
TH		 3479 curr_abs_state = instance->instancet->
3480 read_fw_status_reg(instance->reg_set);
c4a3e0a5 3481
7218df69 3482 if (abs_state == curr_abs_state) {
c4a3e0a5
BS		 3483 msleep(1);
3484 } else
3485 break;
3486 }
3487
3488 /*
3489 * Return error if fw_state hasn't changed after max_wait
3490 */
7218df69 3491 if (curr_abs_state == abs_state) {
c4a3e0a5
BS		 3492 printk(KERN_DEBUG "FW state [%d] hasn't changed "
3493 "in %d secs\n", fw_state, max_wait);
3494 return -ENODEV;
3495 }
bc6ac5e8
TH		 3496
3497 abs_state = curr_abs_state;
3498 fw_state = curr_abs_state & MFI_STATE_MASK;
39a98554 3499 }
0d49016b 3500 printk(KERN_INFO "megasas: FW now in Ready state\n");
c4a3e0a5
BS		 3501
3502 return 0;
3503}
3504
3505/**
3506 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
3507 * @instance: Adapter soft state
3508 */
3509static void megasas_teardown_frame_pool(struct megasas_instance *instance)
3510{
3511 int i;
9c915a8c 3512 u32 max_cmd = instance->max_mfi_cmds;
c4a3e0a5
BS		 3513 struct megasas_cmd *cmd;
3514
3515 if (!instance->frame_dma_pool)
3516 return;
3517
3518 /*
3519 * Return all frames to pool
3520 */
3521 for (i = 0; i < max_cmd; i++) {
3522
3523 cmd = instance->cmd_list[i];
3524
3525 if (cmd->frame)
3526 pci_pool_free(instance->frame_dma_pool, cmd->frame,
3527 cmd->frame_phys_addr);
3528
3529 if (cmd->sense)
e3bbff9f 3530 pci_pool_free(instance->sense_dma_pool, cmd->sense,
c4a3e0a5
BS		 3531 cmd->sense_phys_addr);
3532 }
3533
3534 /*
3535 * Now destroy the pool itself
3536 */
3537 pci_pool_destroy(instance->frame_dma_pool);
3538 pci_pool_destroy(instance->sense_dma_pool);
3539
3540 instance->frame_dma_pool = NULL;
3541 instance->sense_dma_pool = NULL;
3542}
3543
3544/**
3545 * megasas_create_frame_pool - Creates DMA pool for cmd frames
3546 * @instance: Adapter soft state
3547 *
3548 * Each command packet has an embedded DMA memory buffer that is used for
3549 * filling MFI frame and the SG list that immediately follows the frame. This
3550 * function creates those DMA memory buffers for each command packet by using
3551 * PCI pool facility.
3552 */
3553static int megasas_create_frame_pool(struct megasas_instance *instance)
3554{
3555 int i;
3556 u32 max_cmd;
3557 u32 sge_sz;
3558 u32 sgl_sz;
3559 u32 total_sz;
3560 u32 frame_count;
3561 struct megasas_cmd *cmd;
3562
9c915a8c 3563 max_cmd = instance->max_mfi_cmds;
c4a3e0a5
BS		 3564
3565 /*
3566 * Size of our frame is 64 bytes for MFI frame, followed by max SG
3567 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer
3568 */
3569 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
3570 sizeof(struct megasas_sge32);
3571
f4c9a131
YB		 3572 if (instance->flag_ieee) {
3573 sge_sz = sizeof(struct megasas_sge_skinny);
3574 }
3575
c4a3e0a5
BS		 3576 /*
3577 * Calculated the number of 64byte frames required for SGL
3578 */
3579 sgl_sz = sge_sz * instance->max_num_sge;
3580 frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE - 1) / MEGAMFI_FRAME_SIZE;
39a98554 3581 frame_count = 15;
c4a3e0a5
BS		 3582
3583 /*
3584 * We need one extra frame for the MFI command
3585 */
3586 frame_count++;
3587
3588 total_sz = MEGAMFI_FRAME_SIZE * frame_count;
3589 /*
3590 * Use DMA pool facility provided by PCI layer
3591 */
3592 instance->frame_dma_pool = pci_pool_create("megasas frame pool",
3593 instance->pdev, total_sz, 64,
3594 0);
3595
3596 if (!instance->frame_dma_pool) {
3597 printk(KERN_DEBUG "megasas: failed to setup frame pool\n");
3598 return -ENOMEM;
3599 }
3600
3601 instance->sense_dma_pool = pci_pool_create("megasas sense pool",
3602 instance->pdev, 128, 4, 0);
3603
3604 if (!instance->sense_dma_pool) {
3605 printk(KERN_DEBUG "megasas: failed to setup sense pool\n");
3606
3607 pci_pool_destroy(instance->frame_dma_pool);
3608 instance->frame_dma_pool = NULL;
3609
3610 return -ENOMEM;
3611 }
3612
3613 /*
3614 * Allocate and attach a frame to each of the commands in cmd_list.
3615 * By making cmd->index as the context instead of the &cmd, we can
3616 * always use 32bit context regardless of the architecture
3617 */
3618 for (i = 0; i < max_cmd; i++) {
3619
3620 cmd = instance->cmd_list[i];
3621
3622 cmd->frame = pci_pool_alloc(instance->frame_dma_pool,
3623 GFP_KERNEL, &cmd->frame_phys_addr);
3624
3625 cmd->sense = pci_pool_alloc(instance->sense_dma_pool,
3626 GFP_KERNEL, &cmd->sense_phys_addr);
3627
3628 /*
3629 * megasas_teardown_frame_pool() takes care of freeing
3630 * whatever has been allocated
3631 */
3632 if (!cmd->frame || !cmd->sense) {
3633 printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n");
3634 megasas_teardown_frame_pool(instance);
3635 return -ENOMEM;
3636 }
3637
707e09bd 3638 memset(cmd->frame, 0, total_sz);
94cd65dd 3639 cmd->frame->io.context = cpu_to_le32(cmd->index);
7e8a75f4 3640 cmd->frame->io.pad_0 = 0;
e5f93a36 3641 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) &&
229fe47c 3642 (instance->pdev->device != PCI_DEVICE_ID_LSI_PLASMA) &&
e5f93a36 3643 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) &&
21d3c710 3644 (instance->pdev->device != PCI_DEVICE_ID_LSI_FURY) &&
e5f93a36 3645 (reset_devices))
3646 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
c4a3e0a5
BS		 3647 }
3648
3649 return 0;
3650}
3651
3652/**
3653 * megasas_free_cmds - Free all the cmds in the free cmd pool
3654 * @instance: Adapter soft state
3655 */
9c915a8c 3656void megasas_free_cmds(struct megasas_instance *instance)
c4a3e0a5
BS		 3657{
3658 int i;
3659 /* First free the MFI frame pool */
3660 megasas_teardown_frame_pool(instance);
3661
3662 /* Free all the commands in the cmd_list */
9c915a8c 3663 for (i = 0; i < instance->max_mfi_cmds; i++)
3664
c4a3e0a5
BS		 3665 kfree(instance->cmd_list[i]);
3666
3667 /* Free the cmd_list buffer itself */
3668 kfree(instance->cmd_list);
3669 instance->cmd_list = NULL;
3670
3671 INIT_LIST_HEAD(&instance->cmd_pool);
3672}
3673
3674/**
3675 * megasas_alloc_cmds - Allocates the command packets
3676 * @instance: Adapter soft state
3677 *
3678 * Each command that is issued to the FW, whether IO commands from the OS or
3679 * internal commands like IOCTLs, are wrapped in local data structure called
3680 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
3681 * the FW.
3682 *
3683 * Each frame has a 32-bit field called context (tag). This context is used
3684 * to get back the megasas_cmd from the frame when a frame gets completed in
3685 * the ISR. Typically the address of the megasas_cmd itself would be used as
3686 * the context. But we wanted to keep the differences between 32 and 64 bit
3687 * systems to the mininum. We always use 32 bit integers for the context. In
3688 * this driver, the 32 bit values are the indices into an array cmd_list.
3689 * This array is used only to look up the megasas_cmd given the context. The
3690 * free commands themselves are maintained in a linked list called cmd_pool.
3691 */
9c915a8c 3692int megasas_alloc_cmds(struct megasas_instance *instance)
c4a3e0a5
BS		 3693{
3694 int i;
3695 int j;
3696 u32 max_cmd;
3697 struct megasas_cmd *cmd;
90dc9d98 3698 struct fusion_context *fusion;
c4a3e0a5 3699
90dc9d98 3700 fusion = instance->ctrl_context;
9c915a8c 3701 max_cmd = instance->max_mfi_cmds;
c4a3e0a5
BS		 3702
3703 /*
3704 * instance->cmd_list is an array of struct megasas_cmd pointers.
3705 * Allocate the dynamic array first and then allocate individual
3706 * commands.
3707 */
dd00cc48 3708 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
c4a3e0a5
BS		 3709
3710 if (!instance->cmd_list) {
3711 printk(KERN_DEBUG "megasas: out of memory\n");
3712 return -ENOMEM;
3713 }
3714
9c915a8c 3715 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
c4a3e0a5
BS		 3716
3717 for (i = 0; i < max_cmd; i++) {
3718 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
3719 GFP_KERNEL);
3720
3721 if (!instance->cmd_list[i]) {
3722
3723 for (j = 0; j < i; j++)
3724 kfree(instance->cmd_list[j]);
3725
3726 kfree(instance->cmd_list);
3727 instance->cmd_list = NULL;
3728
3729 return -ENOMEM;
3730 }
3731 }
3732
c4a3e0a5
BS		 3733 for (i = 0; i < max_cmd; i++) {
3734 cmd = instance->cmd_list[i];
3735 memset(cmd, 0, sizeof(struct megasas_cmd));
3736 cmd->index = i;
90dc9d98 3737 atomic_set(&cmd->mfi_mpt_pthr, MFI_LIST_ADDED);
39a98554 3738 cmd->scmd = NULL;
c4a3e0a5
BS		 3739 cmd->instance = instance;
3740
3741 list_add_tail(&cmd->list, &instance->cmd_pool);
3742 }
3743
3744 /*
3745 * Create a frame pool and assign one frame to each cmd
3746 */
3747 if (megasas_create_frame_pool(instance)) {
3748 printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n");
3749 megasas_free_cmds(instance);
3750 }
3751
3752 return 0;
3753}
3754
81e403ce
YB		 3755/*
3756 * megasas_get_pd_list_info - Returns FW's pd_list structure
3757 * @instance: Adapter soft state
3758 * @pd_list: pd_list structure
3759 *
3760 * Issues an internal command (DCMD) to get the FW's controller PD
3761 * list structure. This information is mainly used to find out SYSTEM
3762 * supported by the FW.
3763 */
3764static int
3765megasas_get_pd_list(struct megasas_instance *instance)
3766{
3767 int ret = 0, pd_index = 0;
3768 struct megasas_cmd *cmd;
3769 struct megasas_dcmd_frame *dcmd;
3770 struct MR_PD_LIST *ci;
3771 struct MR_PD_ADDRESS *pd_addr;
3772 dma_addr_t ci_h = 0;
3773
3774 cmd = megasas_get_cmd(instance);
3775
3776 if (!cmd) {
3777 printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n");
3778 return -ENOMEM;
3779 }
3780
3781 dcmd = &cmd->frame->dcmd;
3782
3783 ci = pci_alloc_consistent(instance->pdev,
3784 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h);
3785
3786 if (!ci) {
3787 printk(KERN_DEBUG "Failed to alloc mem for pd_list\n");
3788 megasas_return_cmd(instance, cmd);
3789 return -ENOMEM;
3790 }
3791
3792 memset(ci, 0, sizeof(*ci));
3793 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3794
3795 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
3796 dcmd->mbox.b[1] = 0;
3797 dcmd->cmd = MFI_CMD_DCMD;
3798 dcmd->cmd_status = 0xFF;
3799 dcmd->sge_count = 1;
94cd65dd 3800 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
81e403ce 3801 dcmd->timeout = 0;
780a3762 3802 dcmd->pad_0 = 0;
94cd65dd
SS		 3803 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
3804 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
3805 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
3806 dcmd->sgl.sge32[0].length = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
81e403ce 3807
90dc9d98
SS		 3808 if (instance->ctrl_context && !instance->mask_interrupts)
3809 ret = megasas_issue_blocked_cmd(instance, cmd,
3810 MEGASAS_BLOCKED_CMD_TIMEOUT);
3811 else
3812 ret = megasas_issue_polled(instance, cmd);
81e403ce
YB		 3813
3814 /*
3815 * the following function will get the instance PD LIST.
3816 */
3817
3818 pd_addr = ci->addr;
3819
3820 if ( ret == 0 &&
94cd65dd 3821 (le32_to_cpu(ci->count) <
81e403ce
YB		 3822 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) {
3823
999ece0a 3824 memset(instance->local_pd_list, 0,
81e403ce
YB		 3825 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
3826
94cd65dd 3827 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
81e403ce 3828
999ece0a 3829 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid =
94cd65dd 3830 le16_to_cpu(pd_addr->deviceId);
999ece0a 3831 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType =
81e403ce 3832 pd_addr->scsiDevType;
999ece0a 3833 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState =
81e403ce
YB		 3834 MR_PD_STATE_SYSTEM;
3835 pd_addr++;
3836 }
999ece0a
SS		 3837 memcpy(instance->pd_list, instance->local_pd_list,
3838 sizeof(instance->pd_list));
81e403ce
YB		 3839 }
3840
3841 pci_free_consistent(instance->pdev,
3842 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
3843 ci, ci_h);
90dc9d98
SS		 3844
3845 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
3846 megasas_return_mfi_mpt_pthr(instance, cmd,
3847 cmd->mpt_pthr_cmd_blocked);
3848 else
3849 megasas_return_cmd(instance, cmd);
81e403ce
YB		 3850
3851 return ret;
3852}
3853
bdc6fb8d
YB		 3854/*
3855 * megasas_get_ld_list_info - Returns FW's ld_list structure
3856 * @instance: Adapter soft state
3857 * @ld_list: ld_list structure
3858 *
3859 * Issues an internal command (DCMD) to get the FW's controller PD
3860 * list structure. This information is mainly used to find out SYSTEM
3861 * supported by the FW.
3862 */
3863static int
3864megasas_get_ld_list(struct megasas_instance *instance)
3865{
3866 int ret = 0, ld_index = 0, ids = 0;
3867 struct megasas_cmd *cmd;
3868 struct megasas_dcmd_frame *dcmd;
3869 struct MR_LD_LIST *ci;
3870 dma_addr_t ci_h = 0;
94cd65dd 3871 u32 ld_count;
bdc6fb8d
YB		 3872
3873 cmd = megasas_get_cmd(instance);
3874
3875 if (!cmd) {
3876 printk(KERN_DEBUG "megasas_get_ld_list: Failed to get cmd\n");
3877 return -ENOMEM;
3878 }
3879
3880 dcmd = &cmd->frame->dcmd;
3881
3882 ci = pci_alloc_consistent(instance->pdev,
3883 sizeof(struct MR_LD_LIST),
3884 &ci_h);
3885
3886 if (!ci) {
3887 printk(KERN_DEBUG "Failed to alloc mem in get_ld_list\n");
3888 megasas_return_cmd(instance, cmd);
3889 return -ENOMEM;
3890 }
3891
3892 memset(ci, 0, sizeof(*ci));
3893 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3894
51087a86
SS		 3895 if (instance->supportmax256vd)
3896 dcmd->mbox.b[0] = 1;
bdc6fb8d
YB		 3897 dcmd->cmd = MFI_CMD_DCMD;
3898 dcmd->cmd_status = 0xFF;
3899 dcmd->sge_count = 1;
94cd65dd 3900 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
bdc6fb8d 3901 dcmd->timeout = 0;
94cd65dd
SS		 3902 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
3903 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
3904 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
3905 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_LIST));
bdc6fb8d
YB		 3906 dcmd->pad_0 = 0;
3907
90dc9d98
SS		 3908 if (instance->ctrl_context && !instance->mask_interrupts)
3909 ret = megasas_issue_blocked_cmd(instance, cmd,
3910 MEGASAS_BLOCKED_CMD_TIMEOUT);
3911 else
3912 ret = megasas_issue_polled(instance, cmd);
3913
bdc6fb8d 3914
94cd65dd
SS		 3915 ld_count = le32_to_cpu(ci->ldCount);
3916
bdc6fb8d
YB		 3917 /* the following function will get the instance PD LIST */
3918
51087a86
SS		 3919 if ((ret == 0) && (ld_count <= instance->fw_supported_vd_count)) {
3920 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
bdc6fb8d 3921
94cd65dd 3922 for (ld_index = 0; ld_index < ld_count; ld_index++) {
bdc6fb8d
YB		 3923 if (ci->ldList[ld_index].state != 0) {
3924 ids = ci->ldList[ld_index].ref.targetId;
3925 instance->ld_ids[ids] =
3926 ci->ldList[ld_index].ref.targetId;
3927 }
3928 }
3929 }
3930
3931 pci_free_consistent(instance->pdev,
3932 sizeof(struct MR_LD_LIST),
3933 ci,
3934 ci_h);
3935
90dc9d98
SS		 3936 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
3937 megasas_return_mfi_mpt_pthr(instance, cmd,
3938 cmd->mpt_pthr_cmd_blocked);
3939 else
3940 megasas_return_cmd(instance, cmd);
bdc6fb8d
YB		 3941 return ret;
3942}
3943
21c9e160 3944/**
3945 * megasas_ld_list_query - Returns FW's ld_list structure
3946 * @instance: Adapter soft state
3947 * @ld_list: ld_list structure
3948 *
3949 * Issues an internal command (DCMD) to get the FW's controller PD
3950 * list structure. This information is mainly used to find out SYSTEM
3951 * supported by the FW.
3952 */
3953static int
3954megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
3955{
3956 int ret = 0, ld_index = 0, ids = 0;
3957 struct megasas_cmd *cmd;
3958 struct megasas_dcmd_frame *dcmd;
3959 struct MR_LD_TARGETID_LIST *ci;
3960 dma_addr_t ci_h = 0;
94cd65dd 3961 u32 tgtid_count;
21c9e160 3962
3963 cmd = megasas_get_cmd(instance);
3964
3965 if (!cmd) {
3966 printk(KERN_WARNING
3967 "megasas:(megasas_ld_list_query): Failed to get cmd\n");
3968 return -ENOMEM;
3969 }
3970
3971 dcmd = &cmd->frame->dcmd;
3972
3973 ci = pci_alloc_consistent(instance->pdev,
3974 sizeof(struct MR_LD_TARGETID_LIST), &ci_h);
3975
3976 if (!ci) {
3977 printk(KERN_WARNING
3978 "megasas: Failed to alloc mem for ld_list_query\n");
3979 megasas_return_cmd(instance, cmd);
3980 return -ENOMEM;
3981 }
3982
3983 memset(ci, 0, sizeof(*ci));
3984 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3985
3986 dcmd->mbox.b[0] = query_type;
51087a86
SS		 3987 if (instance->supportmax256vd)
3988 dcmd->mbox.b[2] = 1;
21c9e160 3989
3990 dcmd->cmd = MFI_CMD_DCMD;
3991 dcmd->cmd_status = 0xFF;
3992 dcmd->sge_count = 1;
94cd65dd 3993 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
21c9e160 3994 dcmd->timeout = 0;
94cd65dd
SS		 3995 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
3996 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
3997 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
3998 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
21c9e160 3999 dcmd->pad_0 = 0;
4000
90dc9d98
SS		 4001 if (instance->ctrl_context && !instance->mask_interrupts)
4002 ret = megasas_issue_blocked_cmd(instance, cmd,
4003 MEGASAS_BLOCKED_CMD_TIMEOUT);
4004 else
4005 ret = megasas_issue_polled(instance, cmd);
21c9e160 4006
94cd65dd
SS		 4007 tgtid_count = le32_to_cpu(ci->count);
4008
51087a86 4009 if ((ret == 0) && (tgtid_count <= (instance->fw_supported_vd_count))) {
21c9e160 4010 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
94cd65dd 4011 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
21c9e160 4012 ids = ci->targetId[ld_index];
4013 instance->ld_ids[ids] = ci->targetId[ld_index];
4014 }
4015
4016 }
4017
4018 pci_free_consistent(instance->pdev, sizeof(struct MR_LD_TARGETID_LIST),
4019 ci, ci_h);
4020
90dc9d98
SS		 4021 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
4022 megasas_return_mfi_mpt_pthr(instance, cmd,
4023 cmd->mpt_pthr_cmd_blocked);
4024 else
4025 megasas_return_cmd(instance, cmd);
21c9e160 4026
4027 return ret;
4028}
4029
c4a3e0a5
BS		 4030/**
4031 * megasas_get_controller_info - Returns FW's controller structure
4032 * @instance: Adapter soft state
4033 * @ctrl_info: Controller information structure
4034 *
4035 * Issues an internal command (DCMD) to get the FW's controller structure.
4036 * This information is mainly used to find out the maximum IO transfer per
4037 * command supported by the FW.
4038 */
51087a86 4039int
c4a3e0a5
BS		 4040megasas_get_ctrl_info(struct megasas_instance *instance,
4041 struct megasas_ctrl_info *ctrl_info)
4042{
4043 int ret = 0;
4044 struct megasas_cmd *cmd;
4045 struct megasas_dcmd_frame *dcmd;
4046 struct megasas_ctrl_info *ci;
4047 dma_addr_t ci_h = 0;
4048
4049 cmd = megasas_get_cmd(instance);
4050
4051 if (!cmd) {
4052 printk(KERN_DEBUG "megasas: Failed to get a free cmd\n");
4053 return -ENOMEM;
4054 }
4055
4056 dcmd = &cmd->frame->dcmd;
4057
4058 ci = pci_alloc_consistent(instance->pdev,
4059 sizeof(struct megasas_ctrl_info), &ci_h);
4060
4061 if (!ci) {
4062 printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n");
4063 megasas_return_cmd(instance, cmd);
4064 return -ENOMEM;
4065 }
4066
4067 memset(ci, 0, sizeof(*ci));
4068 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4069
4070 dcmd->cmd = MFI_CMD_DCMD;
4071 dcmd->cmd_status = 0xFF;
4072 dcmd->sge_count = 1;
94cd65dd 4073 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
c4a3e0a5 4074 dcmd->timeout = 0;
780a3762 4075 dcmd->pad_0 = 0;
94cd65dd
SS		 4076 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
4077 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
4078 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
4079 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_ctrl_info));
51087a86 4080 dcmd->mbox.b[0] = 1;
c4a3e0a5 4081
90dc9d98
SS		 4082 if (instance->ctrl_context && !instance->mask_interrupts)
4083 ret = megasas_issue_blocked_cmd(instance, cmd,
4084 MEGASAS_BLOCKED_CMD_TIMEOUT);
4085 else
4086 ret = megasas_issue_polled(instance, cmd);
4087
4088 if (!ret)
c4a3e0a5 4089 memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info));
c4a3e0a5
BS		 4090
4091 pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info),
4092 ci, ci_h);
4093
90dc9d98
SS		 4094 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
4095 megasas_return_mfi_mpt_pthr(instance, cmd,
4096 cmd->mpt_pthr_cmd_blocked);
4097 else
4098 megasas_return_cmd(instance, cmd);
c4a3e0a5
BS		 4099 return ret;
4100}
4101
fc62b3fc
SS		 4102/*
4103 * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer
4104 * to firmware
4105 *
4106 * @instance: Adapter soft state
4107 * @crash_buf_state - tell FW to turn ON/OFF crash dump feature
4108 MR_CRASH_BUF_TURN_OFF = 0
4109 MR_CRASH_BUF_TURN_ON = 1
4110 * @return 0 on success non-zero on failure.
4111 * Issues an internal command (DCMD) to set parameters for crash dump feature.
4112 * Driver will send address of crash dump DMA buffer and set mbox to tell FW
4113 * that driver supports crash dump feature. This DCMD will be sent only if
4114 * crash dump feature is supported by the FW.
4115 *
4116 */
4117int megasas_set_crash_dump_params(struct megasas_instance *instance,
4118 u8 crash_buf_state)
4119{
4120 int ret = 0;
4121 struct megasas_cmd *cmd;
4122 struct megasas_dcmd_frame *dcmd;
4123
4124 cmd = megasas_get_cmd(instance);
4125
4126 if (!cmd) {
4127 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
4128 return -ENOMEM;
4129 }
4130
4131
4132 dcmd = &cmd->frame->dcmd;
4133
4134 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4135 dcmd->mbox.b[0] = crash_buf_state;
4136 dcmd->cmd = MFI_CMD_DCMD;
4137 dcmd->cmd_status = 0xFF;
4138 dcmd->sge_count = 1;
4139 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
4140 dcmd->timeout = 0;
4141 dcmd->pad_0 = 0;
4142 dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
4143 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
4144 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->crash_dump_h);
4145 dcmd->sgl.sge32[0].length = cpu_to_le32(CRASH_DMA_BUF_SIZE);
4146
90dc9d98
SS		 4147 if (instance->ctrl_context && !instance->mask_interrupts)
4148 ret = megasas_issue_blocked_cmd(instance, cmd,
4149 MEGASAS_BLOCKED_CMD_TIMEOUT);
fc62b3fc 4150 else
90dc9d98
SS		 4151 ret = megasas_issue_polled(instance, cmd);
4152
4153 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
4154 megasas_return_mfi_mpt_pthr(instance, cmd,
4155 cmd->mpt_pthr_cmd_blocked);
4156 else
4157 megasas_return_cmd(instance, cmd);
fc62b3fc
SS		 4158 return ret;
4159}
4160
31ea7088 4161/**
4162 * megasas_issue_init_mfi - Initializes the FW
4163 * @instance: Adapter soft state
4164 *
4165 * Issues the INIT MFI cmd
4166 */
4167static int
4168megasas_issue_init_mfi(struct megasas_instance *instance)
4169{
4170 u32 context;
4171
4172 struct megasas_cmd *cmd;
4173
4174 struct megasas_init_frame *init_frame;
4175 struct megasas_init_queue_info *initq_info;
4176 dma_addr_t init_frame_h;
4177 dma_addr_t initq_info_h;
4178
4179 /*
4180 * Prepare a init frame. Note the init frame points to queue info
4181 * structure. Each frame has SGL allocated after first 64 bytes. For
4182 * this frame - since we don't need any SGL - we use SGL's space as
4183 * queue info structure
4184 *
4185 * We will not get a NULL command below. We just created the pool.
4186 */
4187 cmd = megasas_get_cmd(instance);
4188
4189 init_frame = (struct megasas_init_frame *)cmd->frame;
4190 initq_info = (struct megasas_init_queue_info *)
4191 ((unsigned long)init_frame + 64);
4192
4193 init_frame_h = cmd->frame_phys_addr;
4194 initq_info_h = init_frame_h + 64;
4195
4196 context = init_frame->context;
4197 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
4198 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
4199 init_frame->context = context;
4200
94cd65dd
SS		 4201 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
4202 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
31ea7088 4203
94cd65dd
SS		 4204 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
4205 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
31ea7088 4206
4207 init_frame->cmd = MFI_CMD_INIT;
4208 init_frame->cmd_status = 0xFF;
94cd65dd
SS		 4209 init_frame->queue_info_new_phys_addr_lo =
4210 cpu_to_le32(lower_32_bits(initq_info_h));
4211 init_frame->queue_info_new_phys_addr_hi =
4212 cpu_to_le32(upper_32_bits(initq_info_h));
31ea7088 4213
94cd65dd 4214 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
31ea7088 4215
4216 /*
4217 * disable the intr before firing the init frame to FW
4218 */
d46a3ad6 4219 instance->instancet->disable_intr(instance);
31ea7088 4220
4221 /*
4222 * Issue the init frame in polled mode
4223 */
4224
4225 if (megasas_issue_polled(instance, cmd)) {
4226 printk(KERN_ERR "megasas: Failed to init firmware\n");
4227 megasas_return_cmd(instance, cmd);
4228 goto fail_fw_init;
4229 }
4230
4231 megasas_return_cmd(instance, cmd);
4232
4233 return 0;
4234
4235fail_fw_init:
4236 return -EINVAL;
4237}
4238
cd50ba8e 4239static u32
4240megasas_init_adapter_mfi(struct megasas_instance *instance)
c4a3e0a5 4241{
cd50ba8e 4242 struct megasas_register_set __iomem *reg_set;
c4a3e0a5
BS		 4243 u32 context_sz;
4244 u32 reply_q_sz;
c4a3e0a5
BS		 4245
4246 reg_set = instance->reg_set;
4247
c4a3e0a5
BS		 4248 /*
4249 * Get various operational parameters from status register
4250 */
1341c939 4251 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
e3bbff9f
SP		 4252 /*
4253 * Reduce the max supported cmds by 1. This is to ensure that the
4254 * reply_q_sz (1 more than the max cmd that driver may send)
4255 * does not exceed max cmds that the FW can support
4256 */
4257 instance->max_fw_cmds = instance->max_fw_cmds-1;
9c915a8c 4258 instance->max_mfi_cmds = instance->max_fw_cmds;
0d49016b 4259 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >>
1341c939 4260 0x10;
c4a3e0a5
BS		 4261 /*
4262 * Create a pool of commands
4263 */
4264 if (megasas_alloc_cmds(instance))
4265 goto fail_alloc_cmds;
4266
4267 /*
4268 * Allocate memory for reply queue. Length of reply queue should
4269 * be _one_ more than the maximum commands handled by the firmware.
4270 *
4271 * Note: When FW completes commands, it places corresponding contex
4272 * values in this circular reply queue. This circular queue is a fairly
4273 * typical producer-consumer queue. FW is the producer (of completed
4274 * commands) and the driver is the consumer.
4275 */
4276 context_sz = sizeof(u32);
4277 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
4278
4279 instance->reply_queue = pci_alloc_consistent(instance->pdev,
4280 reply_q_sz,
4281 &instance->reply_queue_h);
4282
4283 if (!instance->reply_queue) {
4284 printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n");
4285 goto fail_reply_queue;
4286 }
4287
31ea7088 4288 if (megasas_issue_init_mfi(instance))
c4a3e0a5 4289 goto fail_fw_init;
c4a3e0a5 4290
51087a86
SS		 4291 if (megasas_get_ctrl_info(instance, instance->ctrl_info)) {
4292 dev_err(&instance->pdev->dev, "(%d): Could get controller info "
4293 "Fail from %s %d\n", instance->unique_id,
4294 __func__, __LINE__);
4295 goto fail_fw_init;
4296 }
4297
39a98554 4298 instance->fw_support_ieee = 0;
4299 instance->fw_support_ieee =
4300 (instance->instancet->read_fw_status_reg(reg_set) &
4301 0x04000000);
4302
4303 printk(KERN_NOTICE "megasas_init_mfi: fw_support_ieee=%d",
4304 instance->fw_support_ieee);
4305
4306 if (instance->fw_support_ieee)
4307 instance->flag_ieee = 1;
4308
cd50ba8e 4309 return 0;
4310
4311fail_fw_init:
4312
4313 pci_free_consistent(instance->pdev, reply_q_sz,
4314 instance->reply_queue, instance->reply_queue_h);
4315fail_reply_queue:
4316 megasas_free_cmds(instance);
4317
4318fail_alloc_cmds:
cd50ba8e 4319 return 1;
4320}
4321
4322/**
4323 * megasas_init_fw - Initializes the FW
4324 * @instance: Adapter soft state
4325 *
4326 * This is the main function for initializing firmware
4327 */
4328
4329static int megasas_init_fw(struct megasas_instance *instance)
4330{
4331 u32 max_sectors_1;
4332 u32 max_sectors_2;
d46a3ad6 4333 u32 tmp_sectors, msix_enable, scratch_pad_2;
11f8a7b3 4334 resource_size_t base_addr;
cd50ba8e 4335 struct megasas_register_set __iomem *reg_set;
51087a86 4336 struct megasas_ctrl_info *ctrl_info = NULL;
cd50ba8e 4337 unsigned long bar_list;
d46a3ad6 4338 int i, loop, fw_msix_count = 0;
229fe47c 4339 struct IOV_111 *iovPtr;
cd50ba8e 4340
4341 /* Find first memory bar */
4342 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
4343 instance->bar = find_first_bit(&bar_list, sizeof(unsigned long));
cd50ba8e 4344 if (pci_request_selected_regions(instance->pdev, instance->bar,
4345 "megasas: LSI")) {
4346 printk(KERN_DEBUG "megasas: IO memory region busy!\n");
4347 return -EBUSY;
4348 }
4349
11f8a7b3
BC		 4350 base_addr = pci_resource_start(instance->pdev, instance->bar);
4351 instance->reg_set = ioremap_nocache(base_addr, 8192);
cd50ba8e 4352
4353 if (!instance->reg_set) {
4354 printk(KERN_DEBUG "megasas: Failed to map IO mem\n");
4355 goto fail_ioremap;
4356 }
4357
4358 reg_set = instance->reg_set;
4359
4360 switch (instance->pdev->device) {
9c915a8c 4361 case PCI_DEVICE_ID_LSI_FUSION:
229fe47c 4362 case PCI_DEVICE_ID_LSI_PLASMA:
36807e67 4363 case PCI_DEVICE_ID_LSI_INVADER:
21d3c710 4364 case PCI_DEVICE_ID_LSI_FURY:
9c915a8c 4365 instance->instancet = &megasas_instance_template_fusion;
4366 break;
cd50ba8e 4367 case PCI_DEVICE_ID_LSI_SAS1078R:
4368 case PCI_DEVICE_ID_LSI_SAS1078DE:
4369 instance->instancet = &megasas_instance_template_ppc;
4370 break;
4371 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
4372 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
4373 instance->instancet = &megasas_instance_template_gen2;
4374 break;
4375 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
4376 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
4377 instance->instancet = &megasas_instance_template_skinny;
4378 break;
4379 case PCI_DEVICE_ID_LSI_SAS1064R:
4380 case PCI_DEVICE_ID_DELL_PERC5:
4381 default:
4382 instance->instancet = &megasas_instance_template_xscale;
4383 break;
4384 }
4385
6431f5d7
SS		 4386 if (megasas_transition_to_ready(instance, 0)) {
4387 atomic_set(&instance->fw_reset_no_pci_access, 1);
4388 instance->instancet->adp_reset
4389 (instance, instance->reg_set);
4390 atomic_set(&instance->fw_reset_no_pci_access, 0);
4391 dev_info(&instance->pdev->dev,
4392 "megasas: FW restarted successfully from %s!\n",
4393 __func__);
4394
4395 /*waitting for about 30 second before retry*/
4396 ssleep(30);
4397
4398 if (megasas_transition_to_ready(instance, 0))
4399 goto fail_ready_state;
4400 }
cd50ba8e 4401
d46a3ad6
SS		 4402 /*
4403 * MSI-X host index 0 is common for all adapter.
4404 * It is used for all MPT based Adapters.
4405 */
4406 instance->reply_post_host_index_addr[0] =
4407 (u32 *)((u8 *)instance->reg_set +
4408 MPI2_REPLY_POST_HOST_INDEX_OFFSET);
4409
3f1abce4 4410 /* Check if MSI-X is supported while in ready state */
4411 msix_enable = (instance->instancet->read_fw_status_reg(reg_set) &
4412 0x4000000) >> 0x1a;
c8e858fe 4413 if (msix_enable && !msix_disable) {
d46a3ad6
SS		 4414 scratch_pad_2 = readl
4415 (&instance->reg_set->outbound_scratch_pad_2);
c8e858fe 4416 /* Check max MSI-X vectors */
229fe47c 4417 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
4418 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA)) {
d46a3ad6
SS		 4419 instance->msix_vectors = (scratch_pad_2
4420 & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
4421 fw_msix_count = instance->msix_vectors;
079eaddf 4422 if (msix_vectors)
4423 instance->msix_vectors =
4424 min(msix_vectors,
4425 instance->msix_vectors);
d46a3ad6
SS		 4426 } else if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)
4427 || (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
4428 /* Invader/Fury supports more than 8 MSI-X */
4429 instance->msix_vectors = ((scratch_pad_2
4430 & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
4431 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
4432 fw_msix_count = instance->msix_vectors;
4433 /* Save 1-15 reply post index address to local memory
4434 * Index 0 is already saved from reg offset
4435 * MPI2_REPLY_POST_HOST_INDEX_OFFSET
4436 */
4437 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
4438 instance->reply_post_host_index_addr[loop] =
4439 (u32 *)((u8 *)instance->reg_set +
4440 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
4441 + (loop * 0x10));
4442 }
4443 if (msix_vectors)
4444 instance->msix_vectors = min(msix_vectors,
4445 instance->msix_vectors);
c8e858fe 4446 } else
4447 instance->msix_vectors = 1;
4448 /* Don't bother allocating more MSI-X vectors than cpus */
4449 instance->msix_vectors = min(instance->msix_vectors,
4450 (unsigned int)num_online_cpus());
4451 for (i = 0; i < instance->msix_vectors; i++)
4452 instance->msixentry[i].entry = i;
8ae80ed1
AG		 4453 i = pci_enable_msix_range(instance->pdev, instance->msixentry,
4454 1, instance->msix_vectors);
c12de882 4455 if (i > 0)
8ae80ed1
AG		 4456 instance->msix_vectors = i;
4457 else
c8e858fe 4458 instance->msix_vectors = 0;
d46a3ad6
SS		 4459
4460 dev_info(&instance->pdev->dev, "[scsi%d]: FW supports"
4461 "<%d> MSIX vector,Online CPUs: <%d>,"
4462 "Current MSIX <%d>\n", instance->host->host_no,
4463 fw_msix_count, (unsigned int)num_online_cpus(),
4464 instance->msix_vectors);
c8e858fe 4465 }
3f1abce4 4466
51087a86
SS		 4467 instance->ctrl_info = kzalloc(sizeof(struct megasas_ctrl_info),
4468 GFP_KERNEL);
4469 if (instance->ctrl_info == NULL)
4470 goto fail_init_adapter;
4471
4472 /*
4473 * Below are default value for legacy Firmware.
4474 * non-fusion based controllers
4475 */
4476 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
4477 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
cd50ba8e 4478 /* Get operational params, sge flags, send init cmd to controller */
4479 if (instance->instancet->init_adapter(instance))
eb1b1237 4480 goto fail_init_adapter;
cd50ba8e 4481
4482 printk(KERN_ERR "megasas: INIT adapter done\n");
4483
39a98554 4484 /** for passthrough
4485 * the following function will get the PD LIST.
4486 */
4487
81e403ce
YB		 4488 memset(instance->pd_list, 0 ,
4489 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
58968fc8
HR		 4490 if (megasas_get_pd_list(instance) < 0) {
4491 printk(KERN_ERR "megasas: failed to get PD list\n");
4492 goto fail_init_adapter;
4493 }
81e403ce 4494
bdc6fb8d 4495 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
21c9e160 4496 if (megasas_ld_list_query(instance,
4497 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
4498 megasas_get_ld_list(instance);
bdc6fb8d 4499
c4a3e0a5
BS		 4500 /*
4501 * Compute the max allowed sectors per IO: The controller info has two
4502 * limits on max sectors. Driver should use the minimum of these two.
4503 *
4504 * 1 << stripe_sz_ops.min = max sectors per strip
4505 *
4506 * Note that older firmwares ( < FW ver 30) didn't report information
4507 * to calculate max_sectors_1. So the number ended up as zero always.
4508 */
14faea9f 4509 tmp_sectors = 0;
51087a86 4510 ctrl_info = instance->ctrl_info;
c4a3e0a5 4511
51087a86
SS		 4512 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
4513 le16_to_cpu(ctrl_info->max_strips_per_io);
4514 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
404a8a1a 4515
51087a86 4516 tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2);
bc93d425 4517
51087a86
SS		 4518 /*Check whether controller is iMR or MR */
4519 if (ctrl_info->memory_size) {
4520 instance->is_imr = 0;
4521 dev_info(&instance->pdev->dev, "Controller type: MR,"
4522 "Memory size is: %dMB\n",
4523 le16_to_cpu(ctrl_info->memory_size));
4524 } else {
4525 instance->is_imr = 1;
4526 dev_info(&instance->pdev->dev,
4527 "Controller type: iMR\n");
4528 }
4529 /* OnOffProperties are converted into CPU arch*/
4530 le32_to_cpus((u32 *)&ctrl_info->properties.OnOffProperties);
4531 instance->disableOnlineCtrlReset =
4532 ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset;
4533 /* adapterOperations2 are converted into CPU arch*/
4534 le32_to_cpus((u32 *)&ctrl_info->adapterOperations2);
4535 instance->mpio = ctrl_info->adapterOperations2.mpio;
4536 instance->UnevenSpanSupport =
4537 ctrl_info->adapterOperations2.supportUnevenSpans;
4538 if (instance->UnevenSpanSupport) {
4539 struct fusion_context *fusion = instance->ctrl_context;
4540
4541 dev_info(&instance->pdev->dev, "FW supports: "
4542 "UnevenSpanSupport=%x\n", instance->UnevenSpanSupport);
4543 if (MR_ValidateMapInfo(instance))
4544 fusion->fast_path_io = 1;
4545 else
4546 fusion->fast_path_io = 0;
fc62b3fc 4547
51087a86
SS		 4548 }
4549 if (ctrl_info->host_interface.SRIOV) {
4550 if (!ctrl_info->adapterOperations2.activePassive)
4551 instance->PlasmaFW111 = 1;
fc62b3fc 4552
51087a86
SS		 4553 if (!instance->PlasmaFW111)
4554 instance->requestorId =
4555 ctrl_info->iov.requestorId;
4556 else {
4557 iovPtr = (struct IOV_111 *)((unsigned char *)ctrl_info + IOV_111_OFFSET);
4558 instance->requestorId = iovPtr->requestorId;
fc62b3fc 4559 }
51087a86
SS		 4560 dev_warn(&instance->pdev->dev, "I am VF "
4561 "requestorId %d\n", instance->requestorId);
4562 }
4563
4564 le32_to_cpus((u32 *)&ctrl_info->adapterOperations3);
4565 instance->crash_dump_fw_support =
4566 ctrl_info->adapterOperations3.supportCrashDump;
4567 instance->crash_dump_drv_support =
4568 (instance->crash_dump_fw_support &&
4569 instance->crash_dump_buf);
4570 if (instance->crash_dump_drv_support) {
4571 dev_info(&instance->pdev->dev, "Firmware Crash dump "
4572 "feature is supported\n");
4573 megasas_set_crash_dump_params(instance,
4574 MR_CRASH_BUF_TURN_OFF);
4575
4576 } else {
4577 if (instance->crash_dump_buf)
4578 pci_free_consistent(instance->pdev,
4579 CRASH_DMA_BUF_SIZE,
4580 instance->crash_dump_buf,
4581 instance->crash_dump_h);
4582 instance->crash_dump_buf = NULL;
14faea9f 4583 }
14faea9f 4584 instance->max_sectors_per_req = instance->max_num_sge *
4585 PAGE_SIZE / 512;
4586 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
4587 instance->max_sectors_per_req = tmp_sectors;
c4a3e0a5
BS		 4588
4589 kfree(ctrl_info);
4590
c5daa6a9 4591 /* Check for valid throttlequeuedepth module parameter */
404a8a1a 4592 if (instance->is_imr) {
c5daa6a9 4593 if (throttlequeuedepth > (instance->max_fw_cmds -
4594 MEGASAS_SKINNY_INT_CMDS))
4595 instance->throttlequeuedepth =
4596 MEGASAS_THROTTLE_QUEUE_DEPTH;
4597 else
4598 instance->throttlequeuedepth = throttlequeuedepth;
4599 } else {
4600 if (throttlequeuedepth > (instance->max_fw_cmds -
4601 MEGASAS_INT_CMDS))
4602 instance->throttlequeuedepth =
4603 MEGASAS_THROTTLE_QUEUE_DEPTH;
4604 else
4605 instance->throttlequeuedepth = throttlequeuedepth;
4606 }
4607
5d018ad0
SP		 4608 /*
4609 * Setup tasklet for cmd completion
4610 */
4611
f86c5424 4612 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
ad84db2e 4613 (unsigned long)instance);
4614
229fe47c 4615 /* Launch SR-IOV heartbeat timer */
4616 if (instance->requestorId) {
4617 if (!megasas_sriov_start_heartbeat(instance, 1))
4618 megasas_start_timer(instance,
4619 &instance->sriov_heartbeat_timer,
4620 megasas_sriov_heartbeat_handler,
4621 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
4622 else
4623 instance->skip_heartbeat_timer_del = 1;
4624 }
4625
c4a3e0a5
BS		 4626 return 0;
4627
eb1b1237 4628fail_init_adapter:
cd50ba8e 4629fail_ready_state:
51087a86
SS		 4630 kfree(instance->ctrl_info);
4631 instance->ctrl_info = NULL;
c4a3e0a5
BS		 4632 iounmap(instance->reg_set);
4633
4634 fail_ioremap:
b6d5d880 4635 pci_release_selected_regions(instance->pdev, instance->bar);
c4a3e0a5
BS		 4636
4637 return -EINVAL;
4638}
4639
4640/**
4641 * megasas_release_mfi - Reverses the FW initialization
4642 * @intance: Adapter soft state
4643 */
4644static void megasas_release_mfi(struct megasas_instance *instance)
4645{
9c915a8c 4646 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
c4a3e0a5 4647
9c915a8c 4648 if (instance->reply_queue)
4649 pci_free_consistent(instance->pdev, reply_q_sz,
c4a3e0a5
BS		 4650 instance->reply_queue, instance->reply_queue_h);
4651
4652 megasas_free_cmds(instance);
4653
4654 iounmap(instance->reg_set);
4655
b6d5d880 4656 pci_release_selected_regions(instance->pdev, instance->bar);
c4a3e0a5
BS		 4657}
4658
4659/**
4660 * megasas_get_seq_num - Gets latest event sequence numbers
4661 * @instance: Adapter soft state
4662 * @eli: FW event log sequence numbers information
4663 *
4664 * FW maintains a log of all events in a non-volatile area. Upper layers would
4665 * usually find out the latest sequence number of the events, the seq number at
4666 * the boot etc. They would "read" all the events below the latest seq number
4667 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
4668 * number), they would subsribe to AEN (asynchronous event notification) and
4669 * wait for the events to happen.
4670 */
4671static int
4672megasas_get_seq_num(struct megasas_instance *instance,
4673 struct megasas_evt_log_info *eli)
4674{
4675 struct megasas_cmd *cmd;
4676 struct megasas_dcmd_frame *dcmd;
4677 struct megasas_evt_log_info *el_info;
4678 dma_addr_t el_info_h = 0;
4679
4680 cmd = megasas_get_cmd(instance);
4681
4682 if (!cmd) {
4683 return -ENOMEM;
4684 }
4685
4686 dcmd = &cmd->frame->dcmd;
4687 el_info = pci_alloc_consistent(instance->pdev,
4688 sizeof(struct megasas_evt_log_info),
4689 &el_info_h);
4690
4691 if (!el_info) {
4692 megasas_return_cmd(instance, cmd);
4693 return -ENOMEM;
4694 }
4695
4696 memset(el_info, 0, sizeof(*el_info));
4697 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4698
4699 dcmd->cmd = MFI_CMD_DCMD;
4700 dcmd->cmd_status = 0x0;
4701 dcmd->sge_count = 1;
94cd65dd 4702 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
c4a3e0a5 4703 dcmd->timeout = 0;
780a3762 4704 dcmd->pad_0 = 0;
94cd65dd
SS		 4705 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
4706 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
4707 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(el_info_h);
4708 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_log_info));
c4a3e0a5 4709
cfbe7554
SS		 4710 if (megasas_issue_blocked_cmd(instance, cmd, 30))
4711 dev_err(&instance->pdev->dev, "Command timedout"
4712 "from %s\n", __func__);
4713 else {
4714 /*
4715 * Copy the data back into callers buffer
4716 */
4717 eli->newest_seq_num = le32_to_cpu(el_info->newest_seq_num);
4718 eli->oldest_seq_num = le32_to_cpu(el_info->oldest_seq_num);
4719 eli->clear_seq_num = le32_to_cpu(el_info->clear_seq_num);
4720 eli->shutdown_seq_num = le32_to_cpu(el_info->shutdown_seq_num);
4721 eli->boot_seq_num = le32_to_cpu(el_info->boot_seq_num);
4722 }
c4a3e0a5
BS		 4723
4724 pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info),
4725 el_info, el_info_h);
4726
90dc9d98
SS		 4727 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
4728 megasas_return_mfi_mpt_pthr(instance, cmd,
4729 cmd->mpt_pthr_cmd_blocked);
4730 else
4731 megasas_return_cmd(instance, cmd);
c4a3e0a5
BS		 4732
4733 return 0;
4734}
4735
4736/**
4737 * megasas_register_aen - Registers for asynchronous event notification
4738 * @instance: Adapter soft state
4739 * @seq_num: The starting sequence number
4740 * @class_locale: Class of the event
4741 *
4742 * This function subscribes for AEN for events beyond the @seq_num. It requests
4743 * to be notified if and only if the event is of type @class_locale
4744 */
4745static int
4746megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
4747 u32 class_locale_word)
4748{
4749 int ret_val;
4750 struct megasas_cmd *cmd;
4751 struct megasas_dcmd_frame *dcmd;
4752 union megasas_evt_class_locale curr_aen;
4753 union megasas_evt_class_locale prev_aen;
4754
4755 /*
4756 * If there an AEN pending already (aen_cmd), check if the
4757 * class_locale of that pending AEN is inclusive of the new
4758 * AEN request we currently have. If it is, then we don't have
4759 * to do anything. In other words, whichever events the current
4760 * AEN request is subscribing to, have already been subscribed
4761 * to.
4762 *
4763 * If the old_cmd is _not_ inclusive, then we have to abort
4764 * that command, form a class_locale that is superset of both
4765 * old and current and re-issue to the FW
4766 */
4767
4768 curr_aen.word = class_locale_word;
4769
4770 if (instance->aen_cmd) {
4771
4772 prev_aen.word = instance->aen_cmd->frame->dcmd.mbox.w[1];
94cd65dd 4773 prev_aen.members.locale = le16_to_cpu(prev_aen.members.locale);
c4a3e0a5
BS		 4774
4775 /*
4776 * A class whose enum value is smaller is inclusive of all
4777 * higher values. If a PROGRESS (= -1) was previously
4778 * registered, then a new registration requests for higher
4779 * classes need not be sent to FW. They are automatically
4780 * included.
4781 *
4782 * Locale numbers don't have such hierarchy. They are bitmap
4783 * values
4784 */
4785 if ((prev_aen.members.class <= curr_aen.members.class) &&
3993a862 4786 !((prev_aen.members.locale & curr_aen.members.locale) ^
c4a3e0a5
BS		 4787 curr_aen.members.locale)) {
4788 /*
4789 * Previously issued event registration includes
4790 * current request. Nothing to do.
4791 */
4792 return 0;
4793 } else {
3993a862 4794 curr_aen.members.locale |= prev_aen.members.locale;
c4a3e0a5
BS		 4795
4796 if (prev_aen.members.class < curr_aen.members.class)
4797 curr_aen.members.class = prev_aen.members.class;
4798
4799 instance->aen_cmd->abort_aen = 1;
4800 ret_val = megasas_issue_blocked_abort_cmd(instance,
4801 instance->
cfbe7554 4802 aen_cmd, 30);
c4a3e0a5
BS		 4803
4804 if (ret_val) {
4805 printk(KERN_DEBUG "megasas: Failed to abort "
4806 "previous AEN command\n");
4807 return ret_val;
4808 }
4809 }
4810 }
4811
4812 cmd = megasas_get_cmd(instance);
4813
4814 if (!cmd)
4815 return -ENOMEM;
4816
4817 dcmd = &cmd->frame->dcmd;
4818
4819 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
4820
4821 /*
4822 * Prepare DCMD for aen registration
4823 */
4824 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4825
4826 dcmd->cmd = MFI_CMD_DCMD;
4827 dcmd->cmd_status = 0x0;
4828 dcmd->sge_count = 1;
94cd65dd 4829 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
c4a3e0a5 4830 dcmd->timeout = 0;
780a3762 4831 dcmd->pad_0 = 0;
94cd65dd
SS		 4832 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
4833 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
4834 dcmd->mbox.w[0] = cpu_to_le32(seq_num);
39a98554 4835 instance->last_seq_num = seq_num;
94cd65dd
SS		 4836 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
4837 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->evt_detail_h);
4838 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_detail));
c4a3e0a5 4839
f4c9a131
YB		 4840 if (instance->aen_cmd != NULL) {
4841 megasas_return_cmd(instance, cmd);
4842 return 0;
4843 }
4844
c4a3e0a5
BS		 4845 /*
4846 * Store reference to the cmd used to register for AEN. When an
4847 * application wants us to register for AEN, we have to abort this
4848 * cmd and re-register with a new EVENT LOCALE supplied by that app
4849 */
4850 instance->aen_cmd = cmd;
4851
4852 /*
4853 * Issue the aen registration frame
4854 */
9c915a8c 4855 instance->instancet->issue_dcmd(instance, cmd);
c4a3e0a5
BS		 4856
4857 return 0;
4858}
4859
4860/**
4861 * megasas_start_aen - Subscribes to AEN during driver load time
4862 * @instance: Adapter soft state
4863 */
4864static int megasas_start_aen(struct megasas_instance *instance)
4865{
4866 struct megasas_evt_log_info eli;
4867 union megasas_evt_class_locale class_locale;
4868
4869 /*
4870 * Get the latest sequence number from FW
4871 */
4872 memset(&eli, 0, sizeof(eli));
4873
4874 if (megasas_get_seq_num(instance, &eli))
4875 return -1;
4876
4877 /*
4878 * Register AEN with FW for latest sequence number plus 1
4879 */
4880 class_locale.members.reserved = 0;
4881 class_locale.members.locale = MR_EVT_LOCALE_ALL;
4882 class_locale.members.class = MR_EVT_CLASS_DEBUG;
4883
94cd65dd 4884 return megasas_register_aen(instance,
3993a862 4885 eli.newest_seq_num + 1,
94cd65dd 4886 class_locale.word);
c4a3e0a5
BS		 4887}
4888
4889/**
4890 * megasas_io_attach - Attaches this driver to SCSI mid-layer
4891 * @instance: Adapter soft state
4892 */
4893static int megasas_io_attach(struct megasas_instance *instance)
4894{
4895 struct Scsi_Host *host = instance->host;
4896
4897 /*
4898 * Export parameters required by SCSI mid-layer
4899 */
4900 host->irq = instance->pdev->irq;
4901 host->unique_id = instance->unique_id;
404a8a1a 4902 if (instance->is_imr) {
7bebf5c7
YB		 4903 host->can_queue =
4904 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
4905 } else
4906 host->can_queue =
4907 instance->max_fw_cmds - MEGASAS_INT_CMDS;
c4a3e0a5
BS		 4908 host->this_id = instance->init_id;
4909 host->sg_tablesize = instance->max_num_sge;
42a8d2b3 4910
4911 if (instance->fw_support_ieee)
4912 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
4913
1fd10685
YB		 4914 /*
4915 * Check if the module parameter value for max_sectors can be used
4916 */
4917 if (max_sectors && max_sectors < instance->max_sectors_per_req)
4918 instance->max_sectors_per_req = max_sectors;
4919 else {
4920 if (max_sectors) {
4921 if (((instance->pdev->device ==
4922 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
4923 (instance->pdev->device ==
4924 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
4925 (max_sectors <= MEGASAS_MAX_SECTORS)) {
4926 instance->max_sectors_per_req = max_sectors;
4927 } else {
4928 printk(KERN_INFO "megasas: max_sectors should be > 0"
4929 "and <= %d (or < 1MB for GEN2 controller)\n",
4930 instance->max_sectors_per_req);
4931 }
4932 }
4933 }
4934
c4a3e0a5 4935 host->max_sectors = instance->max_sectors_per_req;
9c915a8c 4936 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
c4a3e0a5
BS		 4937 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
4938 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
4939 host->max_lun = MEGASAS_MAX_LUN;
122da302 4940 host->max_cmd_len = 16;
c4a3e0a5 4941
9c915a8c 4942 /* Fusion only supports host reset */
36807e67 4943 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
229fe47c 4944 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
21d3c710
SS		 4945 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
4946 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
9c915a8c 4947 host->hostt->eh_device_reset_handler = NULL;
4948 host->hostt->eh_bus_reset_handler = NULL;
4949 }
4950
c4a3e0a5
BS		 4951 /*
4952 * Notify the mid-layer about the new controller
4953 */
4954 if (scsi_add_host(host, &instance->pdev->dev)) {
4955 printk(KERN_DEBUG "megasas: scsi_add_host failed\n");
4956 return -ENODEV;
4957 }
4958
4959 /*
4960 * Trigger SCSI to scan our drives
4961 */
4962 scsi_scan_host(host);
4963 return 0;
4964}
4965
31ea7088 4966static int
4967megasas_set_dma_mask(struct pci_dev *pdev)
4968{
4969 /*
4970 * All our contollers are capable of performing 64-bit DMA
4971 */
4972 if (IS_DMA64) {
6a35528a 4973 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
31ea7088 4974
284901a9 4975 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
31ea7088 4976 goto fail_set_dma_mask;
4977 }
4978 } else {
284901a9 4979 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
31ea7088 4980 goto fail_set_dma_mask;
4981 }
46de63e2
SS		 4982 /*
4983 * Ensure that all data structures are allocated in 32-bit
4984 * memory.
4985 */
4986 if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) {
4987 /* Try 32bit DMA mask and 32 bit Consistent dma mask */
4988 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
4989 && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
4990 dev_info(&pdev->dev, "set 32bit DMA mask"
4991 "and 32 bit consistent mask\n");
4992 else
4993 goto fail_set_dma_mask;
4994 }
94cd65dd 4995
31ea7088 4996 return 0;
4997
4998fail_set_dma_mask:
4999 return 1;
5000}
5001
c4a3e0a5
BS		 5002/**
5003 * megasas_probe_one - PCI hotplug entry point
5004 * @pdev: PCI device structure
0d49016b 5005 * @id: PCI ids of supported hotplugged adapter
c4a3e0a5 5006 */
6f039790
GKH		 5007static int megasas_probe_one(struct pci_dev *pdev,
5008 const struct pci_device_id *id)
c4a3e0a5 5009{
8058a169 5010 int rval, pos, i, j, cpu;
c4a3e0a5
BS		 5011 struct Scsi_Host *host;
5012 struct megasas_instance *instance;
66192dfe 5013 u16 control = 0;
51087a86 5014 struct fusion_context *fusion = NULL;
66192dfe 5015
5016 /* Reset MSI-X in the kdump kernel */
5017 if (reset_devices) {
5018 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
5019 if (pos) {
99369065 5020 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
66192dfe 5021 &control);
5022 if (control & PCI_MSIX_FLAGS_ENABLE) {
5023 dev_info(&pdev->dev, "resetting MSI-X\n");
5024 pci_write_config_word(pdev,
99369065 5025 pos + PCI_MSIX_FLAGS,
66192dfe 5026 control &
5027 ~PCI_MSIX_FLAGS_ENABLE);
5028 }
5029 }
5030 }
c4a3e0a5
BS		 5031
5032 /*
5033 * Announce PCI information
5034 */
5035 printk(KERN_INFO "megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ",
5036 pdev->vendor, pdev->device, pdev->subsystem_vendor,
5037 pdev->subsystem_device);
5038
5039 printk("bus %d:slot %d:func %d\n",
5040 pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));
5041
5042 /*
5043 * PCI prepping: enable device set bus mastering and dma mask
5044 */
aeab3fd7 5045 rval = pci_enable_device_mem(pdev);
c4a3e0a5
BS		 5046
5047 if (rval) {
5048 return rval;
5049 }
5050
5051 pci_set_master(pdev);
5052
31ea7088 5053 if (megasas_set_dma_mask(pdev))
5054 goto fail_set_dma_mask;
c4a3e0a5
BS		 5055
5056 host = scsi_host_alloc(&megasas_template,
5057 sizeof(struct megasas_instance));
5058
5059 if (!host) {
5060 printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n");
5061 goto fail_alloc_instance;
5062 }
5063
5064 instance = (struct megasas_instance *)host->hostdata;
5065 memset(instance, 0, sizeof(*instance));
39a98554 5066 atomic_set( &instance->fw_reset_no_pci_access, 0 );
9c915a8c 5067 instance->pdev = pdev;
c4a3e0a5 5068
9c915a8c 5069 switch (instance->pdev->device) {
5070 case PCI_DEVICE_ID_LSI_FUSION:
229fe47c 5071 case PCI_DEVICE_ID_LSI_PLASMA:
36807e67 5072 case PCI_DEVICE_ID_LSI_INVADER:
21d3c710 5073 case PCI_DEVICE_ID_LSI_FURY:
9c915a8c 5074 {
51087a86
SS		 5075 instance->ctrl_context_pages =
5076 get_order(sizeof(struct fusion_context));
5077 instance->ctrl_context = (void *)__get_free_pages(GFP_KERNEL,
5078 instance->ctrl_context_pages);
9c915a8c 5079 if (!instance->ctrl_context) {
5080 printk(KERN_DEBUG "megasas: Failed to allocate "
5081 "memory for Fusion context info\n");
5082 goto fail_alloc_dma_buf;
5083 }
5084 fusion = instance->ctrl_context;
5085 INIT_LIST_HEAD(&fusion->cmd_pool);
90dc9d98 5086 spin_lock_init(&fusion->mpt_pool_lock);
51087a86
SS		 5087 memset(fusion->load_balance_info, 0,
5088 sizeof(struct LD_LOAD_BALANCE_INFO) * MAX_LOGICAL_DRIVES_EXT);
9c915a8c 5089 }
5090 break;
5091 default: /* For all other supported controllers */
5092
5093 instance->producer =
5094 pci_alloc_consistent(pdev, sizeof(u32),
5095 &instance->producer_h);
5096 instance->consumer =
5097 pci_alloc_consistent(pdev, sizeof(u32),
5098 &instance->consumer_h);
5099
5100 if (!instance->producer || !instance->consumer) {
5101 printk(KERN_DEBUG "megasas: Failed to allocate"
5102 "memory for producer, consumer\n");
5103 goto fail_alloc_dma_buf;
5104 }
c4a3e0a5 5105
9c915a8c 5106 *instance->producer = 0;
5107 *instance->consumer = 0;
5108 break;
c4a3e0a5
BS		 5109 }
5110
fc62b3fc
SS		 5111 /* Crash dump feature related initialisation*/
5112 instance->drv_buf_index = 0;
5113 instance->drv_buf_alloc = 0;
5114 instance->crash_dump_fw_support = 0;
5115 instance->crash_dump_app_support = 0;
5116 instance->fw_crash_state = UNAVAILABLE;
5117 spin_lock_init(&instance->crashdump_lock);
5118 instance->crash_dump_buf = NULL;
5119
5120 if (!reset_devices)
5121 instance->crash_dump_buf = pci_alloc_consistent(pdev,
5122 CRASH_DMA_BUF_SIZE,
5123 &instance->crash_dump_h);
5124 if (!instance->crash_dump_buf)
5125 dev_err(&instance->pdev->dev, "Can't allocate Firmware "
5126 "crash dump DMA buffer\n");
5127
c3518837 5128 megasas_poll_wait_aen = 0;
f4c9a131 5129 instance->flag_ieee = 0;
7e8a75f4 5130 instance->ev = NULL;
39a98554 5131 instance->issuepend_done = 1;
5132 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
404a8a1a 5133 instance->is_imr = 0;
c4a3e0a5
BS		 5134
5135 instance->evt_detail = pci_alloc_consistent(pdev,
5136 sizeof(struct
5137 megasas_evt_detail),
5138 &instance->evt_detail_h);
5139
5140 if (!instance->evt_detail) {
5141 printk(KERN_DEBUG "megasas: Failed to allocate memory for "
5142 "event detail structure\n");
5143 goto fail_alloc_dma_buf;
5144 }
5145
5146 /*
5147 * Initialize locks and queues
5148 */
5149 INIT_LIST_HEAD(&instance->cmd_pool);
39a98554 5150 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
c4a3e0a5 5151
e4a082c7
SP		 5152 atomic_set(&instance->fw_outstanding,0);
5153
c4a3e0a5
BS		 5154 init_waitqueue_head(&instance->int_cmd_wait_q);
5155 init_waitqueue_head(&instance->abort_cmd_wait_q);
5156
90dc9d98 5157 spin_lock_init(&instance->mfi_pool_lock);
39a98554 5158 spin_lock_init(&instance->hba_lock);
7343eb65 5159 spin_lock_init(&instance->completion_lock);
c4a3e0a5 5160
e5a69e27 5161 mutex_init(&instance->aen_mutex);
9c915a8c 5162 mutex_init(&instance->reset_mutex);
c4a3e0a5
BS		 5163
5164 /*
5165 * Initialize PCI related and misc parameters
5166 */
c4a3e0a5
BS		 5167 instance->host = host;
5168 instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
5169 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
51087a86 5170 instance->ctrl_info = NULL;
c4a3e0a5 5171
7bebf5c7
YB		 5172 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
5173 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
f4c9a131 5174 instance->flag_ieee = 1;
7bebf5c7
YB		 5175 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
5176 } else
90dc9d98 5177 sema_init(&instance->ioctl_sem, (MEGASAS_INT_CMDS - 5));
7bebf5c7 5178
658dcedb 5179 megasas_dbg_lvl = 0;
05e9ebbe 5180 instance->flag = 0;
0c79e681 5181 instance->unload = 1;
05e9ebbe 5182 instance->last_time = 0;
39a98554 5183 instance->disableOnlineCtrlReset = 1;
bc93d425 5184 instance->UnevenSpanSupport = 0;
39a98554 5185
36807e67 5186 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
229fe47c 5187 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
21d3c710 5188 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
fc62b3fc 5189 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
9c915a8c 5190 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
fc62b3fc
SS		 5191 INIT_WORK(&instance->crash_init, megasas_fusion_crash_dump_wq);
5192 } else
9c915a8c 5193 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
658dcedb 5194
0a77066a 5195 /*
5196 * Initialize MFI Firmware
5197 */
5198 if (megasas_init_fw(instance))
5199 goto fail_init_mfi;
5200
229fe47c 5201 if (instance->requestorId) {
5202 if (instance->PlasmaFW111) {
5203 instance->vf_affiliation_111 =
5204 pci_alloc_consistent(pdev, sizeof(struct MR_LD_VF_AFFILIATION_111),
5205 &instance->vf_affiliation_111_h);
5206 if (!instance->vf_affiliation_111)
5207 printk(KERN_WARNING "megasas: Can't allocate "
5208 "memory for VF affiliation buffer\n");
5209 } else {
5210 instance->vf_affiliation =
5211 pci_alloc_consistent(pdev,
5212 (MAX_LOGICAL_DRIVES + 1) *
5213 sizeof(struct MR_LD_VF_AFFILIATION),
5214 &instance->vf_affiliation_h);
5215 if (!instance->vf_affiliation)
5216 printk(KERN_WARNING "megasas: Can't allocate "
5217 "memory for VF affiliation buffer\n");
5218 }
5219 }
5220
d46a3ad6 5221retry_irq_register:
c4a3e0a5
BS		 5222 /*
5223 * Register IRQ
5224 */
c8e858fe 5225 if (instance->msix_vectors) {
8058a169
SS		 5226 cpu = cpumask_first(cpu_online_mask);
5227 for (i = 0; i < instance->msix_vectors; i++) {
c8e858fe 5228 instance->irq_context[i].instance = instance;
5229 instance->irq_context[i].MSIxIndex = i;
5230 if (request_irq(instance->msixentry[i].vector,
5231 instance->instancet->service_isr, 0,
5232 "megasas",
5233 &instance->irq_context[i])) {
5234 printk(KERN_DEBUG "megasas: Failed to "
5235 "register IRQ for vector %d.\n", i);
8058a169 5236 for (j = 0; j < i; j++) {
ac95136a
SS		 5237 if (smp_affinity_enable)
5238 irq_set_affinity_hint(
5239 instance->msixentry[j].vector, NULL);
c8e858fe 5240 free_irq(
5241 instance->msixentry[j].vector,
5242 &instance->irq_context[j]);
8058a169 5243 }
d46a3ad6
SS		 5244 /* Retry irq register for IO_APIC */
5245 instance->msix_vectors = 0;
5246 goto retry_irq_register;
c8e858fe 5247 }
ac95136a
SS		 5248 if (smp_affinity_enable) {
5249 if (irq_set_affinity_hint(instance->msixentry[i].vector,
5250 get_cpu_mask(cpu)))
5251 dev_err(&instance->pdev->dev,
5252 "Error setting affinity hint "
5253 "for cpu %d\n", cpu);
5254 cpu = cpumask_next(cpu, cpu_online_mask);
5255 }
c8e858fe 5256 }
5257 } else {
5258 instance->irq_context[0].instance = instance;
5259 instance->irq_context[0].MSIxIndex = 0;
5260 if (request_irq(pdev->irq, instance->instancet->service_isr,
5261 IRQF_SHARED, "megasas",
5262 &instance->irq_context[0])) {
5263 printk(KERN_DEBUG "megasas: Failed to register IRQ\n");
5264 goto fail_irq;
5265 }
c4a3e0a5
BS		 5266 }
5267
d46a3ad6 5268 instance->instancet->enable_intr(instance);
c4a3e0a5
BS		 5269
5270 /*
5271 * Store instance in PCI softstate
5272 */
5273 pci_set_drvdata(pdev, instance);
5274
5275 /*
5276 * Add this controller to megasas_mgmt_info structure so that it
5277 * can be exported to management applications
5278 */
5279 megasas_mgmt_info.count++;
5280 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
5281 megasas_mgmt_info.max_index++;
5282
541f90b7 5283 /*
5284 * Register with SCSI mid-layer
5285 */
5286 if (megasas_io_attach(instance))
5287 goto fail_io_attach;
5288
5289 instance->unload = 0;
5290
c4a3e0a5
BS		 5291 /*
5292 * Initiate AEN (Asynchronous Event Notification)
5293 */
5294 if (megasas_start_aen(instance)) {
5295 printk(KERN_DEBUG "megasas: start aen failed\n");
5296 goto fail_start_aen;
5297 }
5298
9ea81f81
AR		 5299 /* Get current SR-IOV LD/VF affiliation */
5300 if (instance->requestorId)
5301 megasas_get_ld_vf_affiliation(instance, 1);
5302
c4a3e0a5
BS		 5303 return 0;
5304
5305 fail_start_aen:
5306 fail_io_attach:
5307 megasas_mgmt_info.count--;
5308 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
5309 megasas_mgmt_info.max_index--;
5310
d46a3ad6 5311 instance->instancet->disable_intr(instance);
c8e858fe 5312 if (instance->msix_vectors)
8058a169 5313 for (i = 0; i < instance->msix_vectors; i++) {
ac95136a
SS		 5314 if (smp_affinity_enable)
5315 irq_set_affinity_hint(
5316 instance->msixentry[i].vector, NULL);
c8e858fe 5317 free_irq(instance->msixentry[i].vector,
5318 &instance->irq_context[i]);
8058a169 5319 }
c8e858fe 5320 else
5321 free_irq(instance->pdev->irq, &instance->irq_context[0]);
eb1b1237 5322fail_irq:
36807e67 5323 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
229fe47c 5324 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
21d3c710
SS		 5325 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
5326 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
eb1b1237 5327 megasas_release_fusion(instance);
5328 else
5329 megasas_release_mfi(instance);
c4a3e0a5 5330 fail_init_mfi:
c8e858fe 5331 if (instance->msix_vectors)
0a77066a 5332 pci_disable_msix(instance->pdev);
c4a3e0a5
BS		 5333 fail_alloc_dma_buf:
5334 if (instance->evt_detail)
5335 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
5336 instance->evt_detail,
5337 instance->evt_detail_h);
5338
eb1b1237 5339 if (instance->producer)
c4a3e0a5
BS		 5340 pci_free_consistent(pdev, sizeof(u32), instance->producer,
5341 instance->producer_h);
5342 if (instance->consumer)
5343 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
5344 instance->consumer_h);
5345 scsi_host_put(host);
5346
5347 fail_alloc_instance:
5348 fail_set_dma_mask:
5349 pci_disable_device(pdev);
5350
5351 return -ENODEV;
5352}
5353
5354/**
5355 * megasas_flush_cache - Requests FW to flush all its caches
5356 * @instance: Adapter soft state
5357 */
5358static void megasas_flush_cache(struct megasas_instance *instance)
5359{
5360 struct megasas_cmd *cmd;
5361 struct megasas_dcmd_frame *dcmd;
5362
39a98554 5363 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
5364 return;
5365
c4a3e0a5
BS		 5366 cmd = megasas_get_cmd(instance);
5367
5368 if (!cmd)
5369 return;
5370
5371 dcmd = &cmd->frame->dcmd;
5372
5373 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5374
5375 dcmd->cmd = MFI_CMD_DCMD;
5376 dcmd->cmd_status = 0x0;
5377 dcmd->sge_count = 0;
94cd65dd 5378 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
c4a3e0a5 5379 dcmd->timeout = 0;
780a3762 5380 dcmd->pad_0 = 0;
c4a3e0a5 5381 dcmd->data_xfer_len = 0;
94cd65dd 5382 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
c4a3e0a5
BS		 5383 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
5384
cfbe7554
SS		 5385 if (megasas_issue_blocked_cmd(instance, cmd, 30))
5386 dev_err(&instance->pdev->dev, "Command timedout"
5387 " from %s\n", __func__);
c4a3e0a5 5388
90dc9d98
SS		 5389 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
5390 megasas_return_mfi_mpt_pthr(instance, cmd,
5391 cmd->mpt_pthr_cmd_blocked);
5392 else
5393 megasas_return_cmd(instance, cmd);
c4a3e0a5
BS		 5394
5395 return;
5396}
5397
5398/**
5399 * megasas_shutdown_controller - Instructs FW to shutdown the controller
5400 * @instance: Adapter soft state
31ea7088 5401 * @opcode: Shutdown/Hibernate
c4a3e0a5 5402 */
31ea7088 5403static void megasas_shutdown_controller(struct megasas_instance *instance,
5404 u32 opcode)
c4a3e0a5
BS		 5405{
5406 struct megasas_cmd *cmd;
5407 struct megasas_dcmd_frame *dcmd;
5408
39a98554 5409 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
5410 return;
5411
c4a3e0a5
BS		 5412 cmd = megasas_get_cmd(instance);
5413
5414 if (!cmd)
5415 return;
5416
5417 if (instance->aen_cmd)
cfbe7554
SS		 5418 megasas_issue_blocked_abort_cmd(instance,
5419 instance->aen_cmd, 30);
9c915a8c 5420 if (instance->map_update_cmd)
5421 megasas_issue_blocked_abort_cmd(instance,
cfbe7554 5422 instance->map_update_cmd, 30);
c4a3e0a5
BS		 5423 dcmd = &cmd->frame->dcmd;
5424
5425 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5426
5427 dcmd->cmd = MFI_CMD_DCMD;
5428 dcmd->cmd_status = 0x0;
5429 dcmd->sge_count = 0;
94cd65dd 5430 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
c4a3e0a5 5431 dcmd->timeout = 0;
780a3762 5432 dcmd->pad_0 = 0;
c4a3e0a5 5433 dcmd->data_xfer_len = 0;
94cd65dd 5434 dcmd->opcode = cpu_to_le32(opcode);
c4a3e0a5 5435
cfbe7554
SS		 5436 if (megasas_issue_blocked_cmd(instance, cmd, 30))
5437 dev_err(&instance->pdev->dev, "Command timedout"
5438 "from %s\n", __func__);
c4a3e0a5 5439
90dc9d98
SS		 5440 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
5441 megasas_return_mfi_mpt_pthr(instance, cmd,
5442 cmd->mpt_pthr_cmd_blocked);
5443 else
5444 megasas_return_cmd(instance, cmd);
c4a3e0a5
BS		 5445
5446 return;
5447}
5448
33139b21 5449#ifdef CONFIG_PM
31ea7088 5450/**
ad84db2e 5451 * megasas_suspend - driver suspend entry point
5452 * @pdev: PCI device structure
31ea7088 5453 * @state: PCI power state to suspend routine
5454 */
33139b21 5455static int
31ea7088 5456megasas_suspend(struct pci_dev *pdev, pm_message_t state)
5457{
5458 struct Scsi_Host *host;
5459 struct megasas_instance *instance;
c8e858fe 5460 int i;
31ea7088 5461
5462 instance = pci_get_drvdata(pdev);
5463 host = instance->host;
0c79e681 5464 instance->unload = 1;
31ea7088 5465
229fe47c 5466 /* Shutdown SR-IOV heartbeat timer */
5467 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
5468 del_timer_sync(&instance->sriov_heartbeat_timer);
5469
31ea7088 5470 megasas_flush_cache(instance);
5471 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
7e8a75f4
YB		 5472
5473 /* cancel the delayed work if this work still in queue */
5474 if (instance->ev != NULL) {
5475 struct megasas_aen_event *ev = instance->ev;
c1d390d8 5476 cancel_delayed_work_sync(&ev->hotplug_work);
7e8a75f4
YB		 5477 instance->ev = NULL;
5478 }
5479
31ea7088 5480 tasklet_kill(&instance->isr_tasklet);
5481
5482 pci_set_drvdata(instance->pdev, instance);
d46a3ad6 5483 instance->instancet->disable_intr(instance);
c8e858fe 5484
5485 if (instance->msix_vectors)
8058a169 5486 for (i = 0; i < instance->msix_vectors; i++) {
ac95136a
SS		 5487 if (smp_affinity_enable)
5488 irq_set_affinity_hint(
5489 instance->msixentry[i].vector, NULL);
c8e858fe 5490 free_irq(instance->msixentry[i].vector,
5491 &instance->irq_context[i]);
8058a169 5492 }
c8e858fe 5493 else
5494 free_irq(instance->pdev->irq, &instance->irq_context[0]);
5495 if (instance->msix_vectors)
80d9da98 5496 pci_disable_msix(instance->pdev);
31ea7088 5497
5498 pci_save_state(pdev);
5499 pci_disable_device(pdev);
5500
5501 pci_set_power_state(pdev, pci_choose_state(pdev, state));
5502
5503 return 0;
5504}
5505
5506/**
5507 * megasas_resume- driver resume entry point
5508 * @pdev: PCI device structure
5509 */
33139b21 5510static int
31ea7088 5511megasas_resume(struct pci_dev *pdev)
5512{
8058a169 5513 int rval, i, j, cpu;
31ea7088 5514 struct Scsi_Host *host;
5515 struct megasas_instance *instance;
5516
5517 instance = pci_get_drvdata(pdev);
5518 host = instance->host;
5519 pci_set_power_state(pdev, PCI_D0);
5520 pci_enable_wake(pdev, PCI_D0, 0);
5521 pci_restore_state(pdev);
5522
5523 /*
5524 * PCI prepping: enable device set bus mastering and dma mask
5525 */
aeab3fd7 5526 rval = pci_enable_device_mem(pdev);
31ea7088 5527
5528 if (rval) {
5529 printk(KERN_ERR "megasas: Enable device failed\n");
5530 return rval;
5531 }
5532
5533 pci_set_master(pdev);
5534
5535 if (megasas_set_dma_mask(pdev))
5536 goto fail_set_dma_mask;
5537
5538 /*
5539 * Initialize MFI Firmware
5540 */
5541
31ea7088 5542 atomic_set(&instance->fw_outstanding, 0);
5543
5544 /*
5545 * We expect the FW state to be READY
5546 */
058a8fac 5547 if (megasas_transition_to_ready(instance, 0))
31ea7088 5548 goto fail_ready_state;
5549
3f1abce4 5550 /* Now re-enable MSI-X */
dd088128 5551 if (instance->msix_vectors &&
8ae80ed1
AG		 5552 pci_enable_msix_exact(instance->pdev, instance->msixentry,
5553 instance->msix_vectors))
dd088128 5554 goto fail_reenable_msix;
3f1abce4 5555
9c915a8c 5556 switch (instance->pdev->device) {
5557 case PCI_DEVICE_ID_LSI_FUSION:
229fe47c 5558 case PCI_DEVICE_ID_LSI_PLASMA:
36807e67 5559 case PCI_DEVICE_ID_LSI_INVADER:
21d3c710 5560 case PCI_DEVICE_ID_LSI_FURY:
9c915a8c 5561 {
5562 megasas_reset_reply_desc(instance);
5563 if (megasas_ioc_init_fusion(instance)) {
5564 megasas_free_cmds(instance);
5565 megasas_free_cmds_fusion(instance);
5566 goto fail_init_mfi;
5567 }
5568 if (!megasas_get_map_info(instance))
5569 megasas_sync_map_info(instance);
5570 }
5571 break;
5572 default:
5573 *instance->producer = 0;
5574 *instance->consumer = 0;
5575 if (megasas_issue_init_mfi(instance))
5576 goto fail_init_mfi;
5577 break;
5578 }
31ea7088 5579
9c915a8c 5580 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
5581 (unsigned long)instance);
31ea7088 5582
5583 /*
5584 * Register IRQ
5585 */
c8e858fe 5586 if (instance->msix_vectors) {
8058a169 5587 cpu = cpumask_first(cpu_online_mask);
c8e858fe 5588 for (i = 0 ; i < instance->msix_vectors; i++) {
5589 instance->irq_context[i].instance = instance;
5590 instance->irq_context[i].MSIxIndex = i;
5591 if (request_irq(instance->msixentry[i].vector,
5592 instance->instancet->service_isr, 0,
5593 "megasas",
5594 &instance->irq_context[i])) {
5595 printk(KERN_DEBUG "megasas: Failed to "
5596 "register IRQ for vector %d.\n", i);
8058a169 5597 for (j = 0; j < i; j++) {
ac95136a
SS		 5598 if (smp_affinity_enable)
5599 irq_set_affinity_hint(
5600 instance->msixentry[j].vector, NULL);
c8e858fe 5601 free_irq(
5602 instance->msixentry[j].vector,
5603 &instance->irq_context[j]);
8058a169 5604 }
c8e858fe 5605 goto fail_irq;
5606 }
8058a169 5607
ac95136a
SS		 5608 if (smp_affinity_enable) {
5609 if (irq_set_affinity_hint(instance->msixentry[i].vector,
5610 get_cpu_mask(cpu)))
5611 dev_err(&instance->pdev->dev, "Error "
5612 "setting affinity hint for cpu "
5613 "%d\n", cpu);
5614 cpu = cpumask_next(cpu, cpu_online_mask);
5615 }
c8e858fe 5616 }
5617 } else {
5618 instance->irq_context[0].instance = instance;
5619 instance->irq_context[0].MSIxIndex = 0;
5620 if (request_irq(pdev->irq, instance->instancet->service_isr,
5621 IRQF_SHARED, "megasas",
5622 &instance->irq_context[0])) {
5623 printk(KERN_DEBUG "megasas: Failed to register IRQ\n");
5624 goto fail_irq;
5625 }
31ea7088 5626 }
5627
229fe47c 5628 /* Re-launch SR-IOV heartbeat timer */
5629 if (instance->requestorId) {
5630 if (!megasas_sriov_start_heartbeat(instance, 0))
5631 megasas_start_timer(instance,
5632 &instance->sriov_heartbeat_timer,
5633 megasas_sriov_heartbeat_handler,
5634 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
5635 else
5636 instance->skip_heartbeat_timer_del = 1;
5637 }
5638
d46a3ad6 5639 instance->instancet->enable_intr(instance);
0c79e681
YB		 5640 instance->unload = 0;
5641
541f90b7 5642 /*
5643 * Initiate AEN (Asynchronous Event Notification)
5644 */
5645 if (megasas_start_aen(instance))
5646 printk(KERN_ERR "megasas: Start AEN failed\n");
5647
31ea7088 5648 return 0;
5649
5650fail_irq:
5651fail_init_mfi:
5652 if (instance->evt_detail)
5653 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
5654 instance->evt_detail,
5655 instance->evt_detail_h);
5656
5657 if (instance->producer)
5658 pci_free_consistent(pdev, sizeof(u32), instance->producer,
5659 instance->producer_h);
5660 if (instance->consumer)
5661 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
5662 instance->consumer_h);
5663 scsi_host_put(host);
5664
5665fail_set_dma_mask:
5666fail_ready_state:
dd088128 5667fail_reenable_msix:
31ea7088 5668
5669 pci_disable_device(pdev);
5670
5671 return -ENODEV;
5672}
33139b21
JS		 5673#else
5674#define megasas_suspend NULL
5675#define megasas_resume NULL
5676#endif
31ea7088 5677
c4a3e0a5
BS		 5678/**
5679 * megasas_detach_one - PCI hot"un"plug entry point
5680 * @pdev: PCI device structure
5681 */
6f039790 5682static void megasas_detach_one(struct pci_dev *pdev)
c4a3e0a5
BS		 5683{
5684 int i;
5685 struct Scsi_Host *host;
5686 struct megasas_instance *instance;
9c915a8c 5687 struct fusion_context *fusion;
c4a3e0a5
BS		 5688
5689 instance = pci_get_drvdata(pdev);
c3518837 5690 instance->unload = 1;
c4a3e0a5 5691 host = instance->host;
9c915a8c 5692 fusion = instance->ctrl_context;
c4a3e0a5 5693
229fe47c 5694 /* Shutdown SR-IOV heartbeat timer */
5695 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
5696 del_timer_sync(&instance->sriov_heartbeat_timer);
5697
fc62b3fc
SS		 5698 if (instance->fw_crash_state != UNAVAILABLE)
5699 megasas_free_host_crash_buffer(instance);
c4a3e0a5
BS		 5700 scsi_remove_host(instance->host);
5701 megasas_flush_cache(instance);
31ea7088 5702 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7e8a75f4
YB		 5703
5704 /* cancel the delayed work if this work still in queue*/
5705 if (instance->ev != NULL) {
5706 struct megasas_aen_event *ev = instance->ev;
c1d390d8 5707 cancel_delayed_work_sync(&ev->hotplug_work);
7e8a75f4
YB		 5708 instance->ev = NULL;
5709 }
5710
cfbe7554
SS		 5711 /* cancel all wait events */
5712 wake_up_all(&instance->int_cmd_wait_q);
5713
5d018ad0 5714 tasklet_kill(&instance->isr_tasklet);
c4a3e0a5
BS		 5715
5716 /*
5717 * Take the instance off the instance array. Note that we will not
5718 * decrement the max_index. We let this array be sparse array
5719 */
5720 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
5721 if (megasas_mgmt_info.instance[i] == instance) {
5722 megasas_mgmt_info.count--;
5723 megasas_mgmt_info.instance[i] = NULL;
5724
5725 break;
5726 }
5727 }
5728
d46a3ad6 5729 instance->instancet->disable_intr(instance);
c4a3e0a5 5730
c8e858fe 5731 if (instance->msix_vectors)
8058a169 5732 for (i = 0; i < instance->msix_vectors; i++) {
ac95136a
SS		 5733 if (smp_affinity_enable)
5734 irq_set_affinity_hint(
5735 instance->msixentry[i].vector, NULL);
c8e858fe 5736 free_irq(instance->msixentry[i].vector,
5737 &instance->irq_context[i]);
8058a169 5738 }
c8e858fe 5739 else
5740 free_irq(instance->pdev->irq, &instance->irq_context[0]);
5741 if (instance->msix_vectors)
80d9da98 5742 pci_disable_msix(instance->pdev);
c4a3e0a5 5743
9c915a8c 5744 switch (instance->pdev->device) {
5745 case PCI_DEVICE_ID_LSI_FUSION:
229fe47c 5746 case PCI_DEVICE_ID_LSI_PLASMA:
36807e67 5747 case PCI_DEVICE_ID_LSI_INVADER:
21d3c710 5748 case PCI_DEVICE_ID_LSI_FURY:
9c915a8c 5749 megasas_release_fusion(instance);
51087a86 5750 for (i = 0; i < 2 ; i++) {
9c915a8c 5751 if (fusion->ld_map[i])
5752 dma_free_coherent(&instance->pdev->dev,
51087a86 5753 fusion->max_map_sz,
9c915a8c 5754 fusion->ld_map[i],
51087a86
SS		 5755 fusion->ld_map_phys[i]);
5756 if (fusion->ld_drv_map[i])
5757 free_pages((ulong)fusion->ld_drv_map[i],
5758 fusion->drv_map_pages);
5759 }
5760 free_pages((ulong)instance->ctrl_context,
5761 instance->ctrl_context_pages);
9c915a8c 5762 break;
5763 default:
5764 megasas_release_mfi(instance);
9c915a8c 5765 pci_free_consistent(pdev, sizeof(u32),
5766 instance->producer,
5767 instance->producer_h);
5768 pci_free_consistent(pdev, sizeof(u32),
5769 instance->consumer,
5770 instance->consumer_h);
5771 break;
5772 }
c4a3e0a5 5773
51087a86
SS		 5774 kfree(instance->ctrl_info);
5775
105900d5
SS		 5776 if (instance->evt_detail)
5777 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
5778 instance->evt_detail, instance->evt_detail_h);
229fe47c 5779
5780 if (instance->vf_affiliation)
5781 pci_free_consistent(pdev, (MAX_LOGICAL_DRIVES + 1) *
5782 sizeof(struct MR_LD_VF_AFFILIATION),
5783 instance->vf_affiliation,
5784 instance->vf_affiliation_h);
5785
5786 if (instance->vf_affiliation_111)
5787 pci_free_consistent(pdev,
5788 sizeof(struct MR_LD_VF_AFFILIATION_111),
5789 instance->vf_affiliation_111,
5790 instance->vf_affiliation_111_h);
5791
5792 if (instance->hb_host_mem)
5793 pci_free_consistent(pdev, sizeof(struct MR_CTRL_HB_HOST_MEM),
5794 instance->hb_host_mem,
5795 instance->hb_host_mem_h);
5796
fc62b3fc
SS		 5797 if (instance->crash_dump_buf)
5798 pci_free_consistent(pdev, CRASH_DMA_BUF_SIZE,
5799 instance->crash_dump_buf, instance->crash_dump_h);
5800
c4a3e0a5
BS		 5801 scsi_host_put(host);
5802
c4a3e0a5
BS		 5803 pci_disable_device(pdev);
5804
5805 return;
5806}
5807
5808/**
5809 * megasas_shutdown - Shutdown entry point
5810 * @device: Generic device structure
5811 */
5812static void megasas_shutdown(struct pci_dev *pdev)
5813{
c8e858fe 5814 int i;
c4a3e0a5 5815 struct megasas_instance *instance = pci_get_drvdata(pdev);
c8e858fe 5816
0c79e681 5817 instance->unload = 1;
c4a3e0a5 5818 megasas_flush_cache(instance);
530e6fc1 5819 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
d46a3ad6 5820 instance->instancet->disable_intr(instance);
c8e858fe 5821 if (instance->msix_vectors)
8058a169 5822 for (i = 0; i < instance->msix_vectors; i++) {
ac95136a
SS		 5823 if (smp_affinity_enable)
5824 irq_set_affinity_hint(
5825 instance->msixentry[i].vector, NULL);
c8e858fe 5826 free_irq(instance->msixentry[i].vector,
5827 &instance->irq_context[i]);
8058a169 5828 }
c8e858fe 5829 else
5830 free_irq(instance->pdev->irq, &instance->irq_context[0]);
5831 if (instance->msix_vectors)
46fd256e 5832 pci_disable_msix(instance->pdev);
c4a3e0a5
BS		 5833}
5834
5835/**
5836 * megasas_mgmt_open - char node "open" entry point
5837 */
5838static int megasas_mgmt_open(struct inode *inode, struct file *filep)
5839{
5840 /*
5841 * Allow only those users with admin rights
5842 */
5843 if (!capable(CAP_SYS_ADMIN))
5844 return -EACCES;
5845
5846 return 0;
5847}
5848
c4a3e0a5
BS		 5849/**
5850 * megasas_mgmt_fasync - Async notifier registration from applications
5851 *
5852 * This function adds the calling process to a driver global queue. When an
5853 * event occurs, SIGIO will be sent to all processes in this queue.
5854 */
5855static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
5856{
5857 int rc;
5858
0b950672 5859 mutex_lock(&megasas_async_queue_mutex);
c4a3e0a5
BS		 5860
5861 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
5862
0b950672 5863 mutex_unlock(&megasas_async_queue_mutex);
c4a3e0a5
BS		 5864
5865 if (rc >= 0) {
5866 /* For sanity check when we get ioctl */
5867 filep->private_data = filep;
5868 return 0;
5869 }
5870
5871 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
5872
5873 return rc;
5874}
5875
c3518837
YB		 5876/**
5877 * megasas_mgmt_poll - char node "poll" entry point
5878 * */
5879static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait)
5880{
5881 unsigned int mask;
5882 unsigned long flags;
5883 poll_wait(file, &megasas_poll_wait, wait);
5884 spin_lock_irqsave(&poll_aen_lock, flags);
5885 if (megasas_poll_wait_aen)
5886 mask = (POLLIN | POLLRDNORM);
51087a86 5887
c3518837
YB		 5888 else
5889 mask = 0;
51087a86 5890 megasas_poll_wait_aen = 0;
c3518837
YB		 5891 spin_unlock_irqrestore(&poll_aen_lock, flags);
5892 return mask;
5893}
5894
fc62b3fc
SS		 5895/*
5896 * megasas_set_crash_dump_params_ioctl:
5897 * Send CRASH_DUMP_MODE DCMD to all controllers
5898 * @cmd: MFI command frame
5899 */
5900
5901static int megasas_set_crash_dump_params_ioctl(
5902 struct megasas_cmd *cmd)
5903{
5904 struct megasas_instance *local_instance;
5905 int i, error = 0;
5906 int crash_support;
5907
5908 crash_support = cmd->frame->dcmd.mbox.w[0];
5909
5910 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
5911 local_instance = megasas_mgmt_info.instance[i];
5912 if (local_instance && local_instance->crash_dump_drv_support) {
5913 if ((local_instance->adprecovery ==
5914 MEGASAS_HBA_OPERATIONAL) &&
5915 !megasas_set_crash_dump_params(local_instance,
5916 crash_support)) {
5917 local_instance->crash_dump_app_support =
5918 crash_support;
5919 dev_info(&local_instance->pdev->dev,
5920 "Application firmware crash "
5921 "dump mode set success\n");
5922 error = 0;
5923 } else {
5924 dev_info(&local_instance->pdev->dev,
5925 "Application firmware crash "
5926 "dump mode set failed\n");
5927 error = -1;
5928 }
5929 }
5930 }
5931 return error;
5932}
5933
c4a3e0a5
BS		 5934/**
5935 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
5936 * @instance: Adapter soft state
5937 * @argp: User's ioctl packet
5938 */
5939static int
5940megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
5941 struct megasas_iocpacket __user * user_ioc,
5942 struct megasas_iocpacket *ioc)
5943{
5944 struct megasas_sge32 *kern_sge32;
5945 struct megasas_cmd *cmd;
5946 void *kbuff_arr[MAX_IOCTL_SGE];
5947 dma_addr_t buf_handle = 0;
5948 int error = 0, i;
5949 void *sense = NULL;
5950 dma_addr_t sense_handle;
7b2519af 5951 unsigned long *sense_ptr;
c4a3e0a5
BS		 5952
5953 memset(kbuff_arr, 0, sizeof(kbuff_arr));
5954
5955 if (ioc->sge_count > MAX_IOCTL_SGE) {
5956 printk(KERN_DEBUG "megasas: SGE count [%d] > max limit [%d]\n",
5957 ioc->sge_count, MAX_IOCTL_SGE);
5958 return -EINVAL;
5959 }
5960
5961 cmd = megasas_get_cmd(instance);
5962 if (!cmd) {
5963 printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n");
5964 return -ENOMEM;
5965 }
5966
5967 /*
5968 * User's IOCTL packet has 2 frames (maximum). Copy those two
5969 * frames into our cmd's frames. cmd->frame's context will get
5970 * overwritten when we copy from user's frames. So set that value
5971 * alone separately
5972 */
5973 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
94cd65dd 5974 cmd->frame->hdr.context = cpu_to_le32(cmd->index);
c3518837 5975 cmd->frame->hdr.pad_0 = 0;
94cd65dd
SS		 5976 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_IEEE |
5977 MFI_FRAME_SGL64 |
5978 MFI_FRAME_SENSE64));
c4a3e0a5 5979
fc62b3fc
SS		 5980 if (cmd->frame->dcmd.opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
5981 error = megasas_set_crash_dump_params_ioctl(cmd);
5982 megasas_return_cmd(instance, cmd);
5983 return error;
5984 }
5985
c4a3e0a5
BS		 5986 /*
5987 * The management interface between applications and the fw uses
5988 * MFI frames. E.g, RAID configuration changes, LD property changes
5989 * etc are accomplishes through different kinds of MFI frames. The
5990 * driver needs to care only about substituting user buffers with
5991 * kernel buffers in SGLs. The location of SGL is embedded in the
5992 * struct iocpacket itself.
5993 */
5994 kern_sge32 = (struct megasas_sge32 *)
5995 ((unsigned long)cmd->frame + ioc->sgl_off);
5996
5997 /*
5998 * For each user buffer, create a mirror buffer and copy in
5999 */
6000 for (i = 0; i < ioc->sge_count; i++) {
98cb7e44
BM		 6001 if (!ioc->sgl[i].iov_len)
6002 continue;
6003
9f35fa8a 6004 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
c4a3e0a5 6005 ioc->sgl[i].iov_len,
9f35fa8a 6006 &buf_handle, GFP_KERNEL);
c4a3e0a5
BS		 6007 if (!kbuff_arr[i]) {
6008 printk(KERN_DEBUG "megasas: Failed to alloc "
6009 "kernel SGL buffer for IOCTL \n");
6010 error = -ENOMEM;
6011 goto out;
6012 }
6013
6014 /*
6015 * We don't change the dma_coherent_mask, so
6016 * pci_alloc_consistent only returns 32bit addresses
6017 */
94cd65dd
SS		 6018 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
6019 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
c4a3e0a5
BS		 6020
6021 /*
6022 * We created a kernel buffer corresponding to the
6023 * user buffer. Now copy in from the user buffer
6024 */
6025 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
6026 (u32) (ioc->sgl[i].iov_len))) {
6027 error = -EFAULT;
6028 goto out;
6029 }
6030 }
6031
6032 if (ioc->sense_len) {
9f35fa8a
SP		 6033 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
6034 &sense_handle, GFP_KERNEL);
c4a3e0a5
BS		 6035 if (!sense) {
6036 error = -ENOMEM;
6037 goto out;
6038 }
6039
6040 sense_ptr =
7b2519af 6041 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
94cd65dd 6042 *sense_ptr = cpu_to_le32(sense_handle);
c4a3e0a5
BS		 6043 }
6044
6045 /*
6046 * Set the sync_cmd flag so that the ISR knows not to complete this
6047 * cmd to the SCSI mid-layer
6048 */
6049 cmd->sync_cmd = 1;
cfbe7554 6050 megasas_issue_blocked_cmd(instance, cmd, 0);
c4a3e0a5
BS		 6051 cmd->sync_cmd = 0;
6052
6053 /*
6054 * copy out the kernel buffers to user buffers
6055 */
6056 for (i = 0; i < ioc->sge_count; i++) {
6057 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
6058 ioc->sgl[i].iov_len)) {
6059 error = -EFAULT;
6060 goto out;
6061 }
6062 }
6063
6064 /*
6065 * copy out the sense
6066 */
6067 if (ioc->sense_len) {
6068 /*
b70a41e0 6069 * sense_ptr points to the location that has the user
c4a3e0a5
BS		 6070 * sense buffer address
6071 */
7b2519af
YB		 6072 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
6073 ioc->sense_off);
c4a3e0a5 6074
b70a41e0 6075 if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)),
6076 sense, ioc->sense_len)) {
b10c36a5 6077 printk(KERN_ERR "megasas: Failed to copy out to user "
6078 "sense data\n");
c4a3e0a5
BS		 6079 error = -EFAULT;
6080 goto out;
6081 }
6082 }
6083
6084 /*
6085 * copy the status codes returned by the fw
6086 */
6087 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
6088 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
6089 printk(KERN_DEBUG "megasas: Error copying out cmd_status\n");
6090 error = -EFAULT;
6091 }
6092
6093 out:
6094 if (sense) {
9f35fa8a 6095 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
c4a3e0a5
BS		 6096 sense, sense_handle);
6097 }
6098
7a6a731b
BM		 6099 for (i = 0; i < ioc->sge_count; i++) {
6100 if (kbuff_arr[i])
6101 dma_free_coherent(&instance->pdev->dev,
94cd65dd 6102 le32_to_cpu(kern_sge32[i].length),
7a6a731b 6103 kbuff_arr[i],
94cd65dd 6104 le32_to_cpu(kern_sge32[i].phys_addr));
90dc9d98 6105 kbuff_arr[i] = NULL;
c4a3e0a5
BS		 6106 }
6107
90dc9d98
SS		 6108 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
6109 megasas_return_mfi_mpt_pthr(instance, cmd,
6110 cmd->mpt_pthr_cmd_blocked);
6111 else
6112 megasas_return_cmd(instance, cmd);
c4a3e0a5
BS		 6113 return error;
6114}
6115
c4a3e0a5
BS		 6116static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
6117{
6118 struct megasas_iocpacket __user *user_ioc =
6119 (struct megasas_iocpacket __user *)arg;
6120 struct megasas_iocpacket *ioc;
6121 struct megasas_instance *instance;
6122 int error;
39a98554 6123 int i;
6124 unsigned long flags;
6125 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 6126
6127 ioc = kmalloc(sizeof(*ioc), GFP_KERNEL);
6128 if (!ioc)
6129 return -ENOMEM;
6130
6131 if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) {
6132 error = -EFAULT;
6133 goto out_kfree_ioc;
6134 }
6135
6136 instance = megasas_lookup_instance(ioc->host_no);
6137 if (!instance) {
6138 error = -ENODEV;
6139 goto out_kfree_ioc;
6140 }
6141
229fe47c 6142 /* Adjust ioctl wait time for VF mode */
6143 if (instance->requestorId)
6144 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF;
6145
6146 /* Block ioctls in VF mode */
6147 if (instance->requestorId && !allow_vf_ioctls) {
6148 error = -ENODEV;
6149 goto out_kfree_ioc;
6150 }
6151
39a98554 6152 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
6153 printk(KERN_ERR "Controller in crit error\n");
0c79e681
YB		 6154 error = -ENODEV;
6155 goto out_kfree_ioc;
6156 }
6157
6158 if (instance->unload == 1) {
6159 error = -ENODEV;
6160 goto out_kfree_ioc;
6161 }
6162
c4a3e0a5
BS		 6163 /*
6164 * We will allow only MEGASAS_INT_CMDS number of parallel ioctl cmds
6165 */
6166 if (down_interruptible(&instance->ioctl_sem)) {
6167 error = -ERESTARTSYS;
6168 goto out_kfree_ioc;
6169 }
39a98554 6170
6171 for (i = 0; i < wait_time; i++) {
6172
6173 spin_lock_irqsave(&instance->hba_lock, flags);
6174 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
6175 spin_unlock_irqrestore(&instance->hba_lock, flags);
6176 break;
6177 }
6178 spin_unlock_irqrestore(&instance->hba_lock, flags);
6179
6180 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
6181 printk(KERN_NOTICE "megasas: waiting"
6182 "for controller reset to finish\n");
6183 }
6184
6185 msleep(1000);
6186 }
6187
6188 spin_lock_irqsave(&instance->hba_lock, flags);
6189 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
6190 spin_unlock_irqrestore(&instance->hba_lock, flags);
6191
6192 printk(KERN_ERR "megaraid_sas: timed out while"
6193 "waiting for HBA to recover\n");
6194 error = -ENODEV;
c64e483e 6195 goto out_up;
39a98554 6196 }
6197 spin_unlock_irqrestore(&instance->hba_lock, flags);
6198
c4a3e0a5 6199 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
c64e483e 6200 out_up:
c4a3e0a5
BS		 6201 up(&instance->ioctl_sem);
6202
6203 out_kfree_ioc:
6204 kfree(ioc);
6205 return error;
6206}
6207
6208static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
6209{
6210 struct megasas_instance *instance;
6211 struct megasas_aen aen;
6212 int error;
39a98554 6213 int i;
6214 unsigned long flags;
6215 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 6216
6217 if (file->private_data != file) {
6218 printk(KERN_DEBUG "megasas: fasync_helper was not "
6219 "called first\n");
6220 return -EINVAL;
6221 }
6222
6223 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
6224 return -EFAULT;
6225
6226 instance = megasas_lookup_instance(aen.host_no);
6227
6228 if (!instance)
6229 return -ENODEV;
6230
39a98554 6231 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
6232 return -ENODEV;
0c79e681
YB		 6233 }
6234
6235 if (instance->unload == 1) {
6236 return -ENODEV;
6237 }
6238
39a98554 6239 for (i = 0; i < wait_time; i++) {
6240
6241 spin_lock_irqsave(&instance->hba_lock, flags);
6242 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
6243 spin_unlock_irqrestore(&instance->hba_lock,
6244 flags);
6245 break;
6246 }
6247
6248 spin_unlock_irqrestore(&instance->hba_lock, flags);
6249
6250 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
6251 printk(KERN_NOTICE "megasas: waiting for"
6252 "controller reset to finish\n");
6253 }
6254
6255 msleep(1000);
6256 }
6257
6258 spin_lock_irqsave(&instance->hba_lock, flags);
6259 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
6260 spin_unlock_irqrestore(&instance->hba_lock, flags);
6261 printk(KERN_ERR "megaraid_sas: timed out while waiting"
6262 "for HBA to recover.\n");
6263 return -ENODEV;
6264 }
6265 spin_unlock_irqrestore(&instance->hba_lock, flags);
6266
e5a69e27 6267 mutex_lock(&instance->aen_mutex);
c4a3e0a5
BS		 6268 error = megasas_register_aen(instance, aen.seq_num,
6269 aen.class_locale_word);
e5a69e27 6270 mutex_unlock(&instance->aen_mutex);
c4a3e0a5
BS		 6271 return error;
6272}
6273
6274/**
6275 * megasas_mgmt_ioctl - char node ioctl entry point
6276 */
6277static long
6278megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
6279{
6280 switch (cmd) {
6281 case MEGASAS_IOC_FIRMWARE:
6282 return megasas_mgmt_ioctl_fw(file, arg);
6283
6284 case MEGASAS_IOC_GET_AEN:
6285 return megasas_mgmt_ioctl_aen(file, arg);
6286 }
6287
6288 return -ENOTTY;
6289}
6290
6291#ifdef CONFIG_COMPAT
6292static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
6293{
6294 struct compat_megasas_iocpacket __user *cioc =
6295 (struct compat_megasas_iocpacket __user *)arg;
6296 struct megasas_iocpacket __user *ioc =
6297 compat_alloc_user_space(sizeof(struct megasas_iocpacket));
6298 int i;
6299 int error = 0;
b3dc1a21 6300 compat_uptr_t ptr;
c4a3e0a5 6301
83aabc1b
JG		 6302 if (clear_user(ioc, sizeof(*ioc)))
6303 return -EFAULT;
c4a3e0a5
BS		 6304
6305 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
6306 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
6307 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
6308 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
6309 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
6310 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
6311 return -EFAULT;
6312
b3dc1a21
TH		 6313 /*
6314 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
6315 * sense_len is not null, so prepare the 64bit value under
6316 * the same condition.
6317 */
6318 if (ioc->sense_len) {
6319 void __user **sense_ioc_ptr =
6320 (void __user **)(ioc->frame.raw + ioc->sense_off);
6321 compat_uptr_t *sense_cioc_ptr =
6322 (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off);
6323 if (get_user(ptr, sense_cioc_ptr) ||
6324 put_user(compat_ptr(ptr), sense_ioc_ptr))
6325 return -EFAULT;
6326 }
c4a3e0a5 6327
b3dc1a21 6328 for (i = 0; i < MAX_IOCTL_SGE; i++) {
c4a3e0a5
BS		 6329 if (get_user(ptr, &cioc->sgl[i].iov_base) ||
6330 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
6331 copy_in_user(&ioc->sgl[i].iov_len,
6332 &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
6333 return -EFAULT;
6334 }
6335
6336 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
6337
6338 if (copy_in_user(&cioc->frame.hdr.cmd_status,
6339 &ioc->frame.hdr.cmd_status, sizeof(u8))) {
6340 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
6341 return -EFAULT;
6342 }
6343 return error;
6344}
6345
6346static long
6347megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
6348 unsigned long arg)
6349{
6350 switch (cmd) {
cb59aa6a
SP		 6351 case MEGASAS_IOC_FIRMWARE32:
6352 return megasas_mgmt_compat_ioctl_fw(file, arg);
c4a3e0a5
BS		 6353 case MEGASAS_IOC_GET_AEN:
6354 return megasas_mgmt_ioctl_aen(file, arg);
6355 }
6356
6357 return -ENOTTY;
6358}
6359#endif
6360
6361/*
6362 * File operations structure for management interface
6363 */
00977a59 6364static const struct file_operations megasas_mgmt_fops = {
c4a3e0a5
BS		 6365 .owner = THIS_MODULE,
6366 .open = megasas_mgmt_open,
c4a3e0a5
BS		 6367 .fasync = megasas_mgmt_fasync,
6368 .unlocked_ioctl = megasas_mgmt_ioctl,
c3518837 6369 .poll = megasas_mgmt_poll,
c4a3e0a5
BS		 6370#ifdef CONFIG_COMPAT
6371 .compat_ioctl = megasas_mgmt_compat_ioctl,
6372#endif
6038f373 6373 .llseek = noop_llseek,
c4a3e0a5
BS		 6374};
6375
6376/*
6377 * PCI hotplug support registration structure
6378 */
6379static struct pci_driver megasas_pci_driver = {
6380
6381 .name = "megaraid_sas",
6382 .id_table = megasas_pci_table,
6383 .probe = megasas_probe_one,
6f039790 6384 .remove = megasas_detach_one,
31ea7088 6385 .suspend = megasas_suspend,
6386 .resume = megasas_resume,
c4a3e0a5
BS		 6387 .shutdown = megasas_shutdown,
6388};
6389
6390/*
6391 * Sysfs driver attributes
6392 */
6393static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf)
6394{
6395 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
6396 MEGASAS_VERSION);
6397}
6398
6399static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL);
6400
72c4fd36
YB		 6401static ssize_t
6402megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf)
6403{
6404 return sprintf(buf, "%u\n", support_poll_for_event);
6405}
6406
6407static DRIVER_ATTR(support_poll_for_event, S_IRUGO,
6408 megasas_sysfs_show_support_poll_for_event, NULL);
6409
837f5fe8
YB		 6410 static ssize_t
6411megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf)
6412{
6413 return sprintf(buf, "%u\n", support_device_change);
6414}
6415
6416static DRIVER_ATTR(support_device_change, S_IRUGO,
6417 megasas_sysfs_show_support_device_change, NULL);
6418
658dcedb
SP		 6419static ssize_t
6420megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf)
6421{
ad84db2e 6422 return sprintf(buf, "%u\n", megasas_dbg_lvl);
658dcedb
SP		 6423}
6424
6425static ssize_t
6426megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count)
6427{
6428 int retval = count;
6429 if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){
6430 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
6431 retval = -EINVAL;
6432 }
6433 return retval;
6434}
6435
66dca9b8 6436static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl,
ad84db2e 6437 megasas_sysfs_set_dbg_lvl);
6438
7e8a75f4
YB		 6439static void
6440megasas_aen_polling(struct work_struct *work)
6441{
6442 struct megasas_aen_event *ev =
c1d390d8 6443 container_of(work, struct megasas_aen_event, hotplug_work.work);
7e8a75f4
YB		 6444 struct megasas_instance *instance = ev->instance;
6445 union megasas_evt_class_locale class_locale;
6446 struct Scsi_Host *host;
6447 struct scsi_device *sdev1;
6448 u16 pd_index = 0;
c9786842 6449 u16 ld_index = 0;
7e8a75f4 6450 int i, j, doscan = 0;
229fe47c 6451 u32 seq_num, wait_time = MEGASAS_RESET_WAIT_TIME;
7e8a75f4
YB		 6452 int error;
6453
6454 if (!instance) {
6455 printk(KERN_ERR "invalid instance!\n");
6456 kfree(ev);
6457 return;
6458 }
229fe47c 6459
6460 /* Adjust event workqueue thread wait time for VF mode */
6461 if (instance->requestorId)
6462 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF;
6463
6464 /* Don't run the event workqueue thread if OCR is running */
6465 for (i = 0; i < wait_time; i++) {
6466 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL)
6467 break;
6468 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
6469 printk(KERN_NOTICE "megasas: %s waiting for "
6470 "controller reset to finish for scsi%d\n",
6471 __func__, instance->host->host_no);
6472 }
6473 msleep(1000);
6474 }
6475
7e8a75f4
YB		 6476 instance->ev = NULL;
6477 host = instance->host;
6478 if (instance->evt_detail) {
6479
94cd65dd 6480 switch (le32_to_cpu(instance->evt_detail->code)) {
7e8a75f4 6481 case MR_EVT_PD_INSERTED:
c9786842
YB		 6482 if (megasas_get_pd_list(instance) == 0) {
6483 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
6484 for (j = 0;
6485 j < MEGASAS_MAX_DEV_PER_CHANNEL;
6486 j++) {
6487
6488 pd_index =
6489 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6490
6491 sdev1 =
6492 scsi_device_lookup(host, i, j, 0);
6493
6494 if (instance->pd_list[pd_index].driveState
6495 == MR_PD_STATE_SYSTEM) {
6496 if (!sdev1) {
6497 scsi_add_device(host, i, j, 0);
6498 }
6499
6500 if (sdev1)
6501 scsi_device_put(sdev1);
6502 }
6503 }
6504 }
6505 }
6506 doscan = 0;
6507 break;
6508
7e8a75f4 6509 case MR_EVT_PD_REMOVED:
c9786842 6510 if (megasas_get_pd_list(instance) == 0) {
c9786842
YB		 6511 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
6512 for (j = 0;
6513 j < MEGASAS_MAX_DEV_PER_CHANNEL;
6514 j++) {
6515
6516 pd_index =
6517 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6518
6519 sdev1 =
6520 scsi_device_lookup(host, i, j, 0);
6521
6522 if (instance->pd_list[pd_index].driveState
6523 == MR_PD_STATE_SYSTEM) {
6524 if (sdev1) {
6525 scsi_device_put(sdev1);
6526 }
6527 } else {
6528 if (sdev1) {
6529 scsi_remove_device(sdev1);
6530 scsi_device_put(sdev1);
6531 }
6532 }
6533 }
6534 }
6535 }
6536 doscan = 0;
6537 break;
6538
6539 case MR_EVT_LD_OFFLINE:
4c598b23 6540 case MR_EVT_CFG_CLEARED:
c9786842 6541 case MR_EVT_LD_DELETED:
229fe47c 6542 if (!instance->requestorId ||
6543 (instance->requestorId &&
6544 megasas_get_ld_vf_affiliation(instance, 0))) {
6545 if (megasas_ld_list_query(instance,
6546 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
6547 megasas_get_ld_list(instance);
6548 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
6549 for (j = 0;
6550 j < MEGASAS_MAX_DEV_PER_CHANNEL;
6551 j++) {
6552
6553 ld_index =
6554 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6555
6556 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6557
6558 if (instance->ld_ids[ld_index]
6559 != 0xff) {
6560 if (sdev1)
6561 scsi_device_put(sdev1);
6562 } else {
6563 if (sdev1) {
6564 scsi_remove_device(sdev1);
6565 scsi_device_put(sdev1);
6566 }
6567 }
c9786842
YB		 6568 }
6569 }
229fe47c 6570 doscan = 0;
c9786842 6571 }
c9786842
YB		 6572 break;
6573 case MR_EVT_LD_CREATED:
229fe47c 6574 if (!instance->requestorId ||
6575 (instance->requestorId &&
6576 megasas_get_ld_vf_affiliation(instance, 0))) {
6577 if (megasas_ld_list_query(instance,
6578 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
6579 megasas_get_ld_list(instance);
6580 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
6581 for (j = 0;
6582 j < MEGASAS_MAX_DEV_PER_CHANNEL;
6583 j++) {
6584 ld_index =
6585 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6586
6587 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6588
6589 if (instance->ld_ids[ld_index]
6590 != 0xff) {
6591 if (!sdev1)
6592 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
c9786842 6593 }
229fe47c 6594 if (sdev1)
6595 scsi_device_put(sdev1);
c9786842
YB		 6596 }
6597 }
229fe47c 6598 doscan = 0;
c9786842 6599 }
c9786842 6600 break;
7e8a75f4 6601 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
c9786842 6602 case MR_EVT_FOREIGN_CFG_IMPORTED:
9c915a8c 6603 case MR_EVT_LD_STATE_CHANGE:
7e8a75f4
YB		 6604 doscan = 1;
6605 break;
6606 default:
6607 doscan = 0;
6608 break;
6609 }
6610 } else {
6611 printk(KERN_ERR "invalid evt_detail!\n");
6612 kfree(ev);
6613 return;
6614 }
6615
6616 if (doscan) {
229fe47c 6617 printk(KERN_INFO "megaraid_sas: scanning for scsi%d...\n",
6618 instance->host->host_no);
58968fc8
HR		 6619 if (megasas_get_pd_list(instance) == 0) {
6620 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
6621 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
6622 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j;
6623 sdev1 = scsi_device_lookup(host, i, j, 0);
6624 if (instance->pd_list[pd_index].driveState ==
6625 MR_PD_STATE_SYSTEM) {
6626 if (!sdev1) {
6627 scsi_add_device(host, i, j, 0);
6628 }
6629 if (sdev1)
6630 scsi_device_put(sdev1);
6631 } else {
6632 if (sdev1) {
6633 scsi_remove_device(sdev1);
6634 scsi_device_put(sdev1);
6635 }
7e8a75f4
YB		 6636 }
6637 }
6638 }
6639 }
c9786842 6640
229fe47c 6641 if (!instance->requestorId ||
6642 (instance->requestorId &&
6643 megasas_get_ld_vf_affiliation(instance, 0))) {
6644 if (megasas_ld_list_query(instance,
6645 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
6646 megasas_get_ld_list(instance);
6647 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
6648 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL;
6649 j++) {
6650 ld_index =
6651 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
c9786842 6652
229fe47c 6653 sdev1 = scsi_device_lookup(host,
6654 MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6655 if (instance->ld_ids[ld_index]
6656 != 0xff) {
6657 if (!sdev1)
6658 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6659 else
6660 scsi_device_put(sdev1);
c9786842 6661 } else {
229fe47c 6662 if (sdev1) {
6663 scsi_remove_device(sdev1);
6664 scsi_device_put(sdev1);
6665 }
c9786842
YB		 6666 }
6667 }
6668 }
6669 }
7e8a75f4
YB		 6670 }
6671
6672 if ( instance->aen_cmd != NULL ) {
6673 kfree(ev);
6674 return ;
6675 }
6676
94cd65dd 6677 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
7e8a75f4
YB		 6678
6679 /* Register AEN with FW for latest sequence number plus 1 */
6680 class_locale.members.reserved = 0;
6681 class_locale.members.locale = MR_EVT_LOCALE_ALL;
6682 class_locale.members.class = MR_EVT_CLASS_DEBUG;
6683 mutex_lock(&instance->aen_mutex);
6684 error = megasas_register_aen(instance, seq_num,
6685 class_locale.word);
6686 mutex_unlock(&instance->aen_mutex);
6687
6688 if (error)
6689 printk(KERN_ERR "register aen failed error %x\n", error);
6690
6691 kfree(ev);
6692}
6693
c4a3e0a5
BS		 6694/**
6695 * megasas_init - Driver load entry point
6696 */
6697static int __init megasas_init(void)
6698{
6699 int rval;
6700
6701 /*
6702 * Announce driver version and other information
6703 */
d98a6deb 6704 pr_info("megasas: %s\n", MEGASAS_VERSION);
c4a3e0a5 6705
bd8d6dd4
KD		 6706 spin_lock_init(&poll_aen_lock);
6707
72c4fd36 6708 support_poll_for_event = 2;
837f5fe8 6709 support_device_change = 1;
72c4fd36 6710
c4a3e0a5
BS		 6711 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
6712
6713 /*
6714 * Register character device node
6715 */
6716 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
6717
6718 if (rval < 0) {
6719 printk(KERN_DEBUG "megasas: failed to open device node\n");
6720 return rval;
6721 }
6722
6723 megasas_mgmt_majorno = rval;
6724
6725 /*
6726 * Register ourselves as PCI hotplug module
6727 */
4041b9cd 6728 rval = pci_register_driver(&megasas_pci_driver);
c4a3e0a5
BS		 6729
6730 if (rval) {
6731 printk(KERN_DEBUG "megasas: PCI hotplug regisration failed \n");
83aabc1b
JG		 6732 goto err_pcidrv;
6733 }
6734
6735 rval = driver_create_file(&megasas_pci_driver.driver,
6736 &driver_attr_version);
6737 if (rval)
6738 goto err_dcf_attr_ver;
72c4fd36
YB		 6739
6740 rval = driver_create_file(&megasas_pci_driver.driver,
6741 &driver_attr_support_poll_for_event);
6742 if (rval)
6743 goto err_dcf_support_poll_for_event;
6744
83aabc1b
JG		 6745 rval = driver_create_file(&megasas_pci_driver.driver,
6746 &driver_attr_dbg_lvl);
6747 if (rval)
6748 goto err_dcf_dbg_lvl;
837f5fe8
YB		 6749 rval = driver_create_file(&megasas_pci_driver.driver,
6750 &driver_attr_support_device_change);
6751 if (rval)
6752 goto err_dcf_support_device_change;
6753
c4a3e0a5 6754 return rval;
ad84db2e 6755
837f5fe8 6756err_dcf_support_device_change:
ad84db2e 6757 driver_remove_file(&megasas_pci_driver.driver,
6758 &driver_attr_dbg_lvl);
83aabc1b 6759err_dcf_dbg_lvl:
72c4fd36
YB		 6760 driver_remove_file(&megasas_pci_driver.driver,
6761 &driver_attr_support_poll_for_event);
72c4fd36 6762err_dcf_support_poll_for_event:
83aabc1b
JG		 6763 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
6764err_dcf_attr_ver:
6765 pci_unregister_driver(&megasas_pci_driver);
6766err_pcidrv:
6767 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
0d49016b 6768 return rval;
c4a3e0a5
BS		 6769}
6770
6771/**
6772 * megasas_exit - Driver unload entry point
6773 */
6774static void __exit megasas_exit(void)
6775{
658dcedb
SP		 6776 driver_remove_file(&megasas_pci_driver.driver,
6777 &driver_attr_dbg_lvl);
837f5fe8
YB		 6778 driver_remove_file(&megasas_pci_driver.driver,
6779 &driver_attr_support_poll_for_event);
6780 driver_remove_file(&megasas_pci_driver.driver,
6781 &driver_attr_support_device_change);
83aabc1b 6782 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
c4a3e0a5
BS		 6783
6784 pci_unregister_driver(&megasas_pci_driver);
6785 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
6786}
6787
6788module_init(megasas_init);
6789module_exit(megasas_exit);
Linux kernel - Deliverables
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