// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *      Adaptec AAC series RAID controller driver
 *      (c) Copyright 2001 Red Hat Inc.
 *
 * based on the old aacraid driver that is..
 * Adaptec aacraid device driver for Linux.
 *
 * Copyright (c) 2000-2010 Adaptec, Inc.
 *               2010-2015 PMC-Sierra, Inc. (aacraid@pmc-sierra.com)
 *               2016-2017 Microsemi Corp. (aacraid@microsemi.com)
 *
 * Module Name:
 *   linit.c
 *
 * Abstract: Linux Driver entry module for Adaptec RAID Array Controller
 */


#include <linux/compat.h>
#include <linux/blkdev.h>
#include <linux/completion.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/pci.h>
#include <linux/aer.h>
#include <linux/slab.h>
#include <linux/mutex.h>
#include <linux/spinlock.h>
#include <linux/syscalls.h>
#include <linux/delay.h>
#include <linux/kthread.h>
#include <linux/msdos_partition.h>

#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsicam.h>
#include <scsi/scsi_eh.h>

#include "aacraid.h"

#define AAC_DRIVER_VERSION              "1.2.1"
#ifndef AAC_DRIVER_BRANCH
#define AAC_DRIVER_BRANCH               ""
#endif
#define AAC_DRIVERNAME                  "aacraid"

#ifdef AAC_DRIVER_BUILD
#define _str(x) #x
#define str(x) _str(x)
#define AAC_DRIVER_FULL_VERSION AAC_DRIVER_VERSION "[" str(AAC_DRIVER_BUILD) "]" AAC_DRIVER_BRANCH
#else
#define AAC_DRIVER_FULL_VERSION AAC_DRIVER_VERSION AAC_DRIVER_BRANCH
#endif

MODULE_AUTHOR("Red Hat Inc and Adaptec");
MODULE_DESCRIPTION("Dell PERC2, 2/Si, 3/Si, 3/Di, "
                   "Adaptec Advanced Raid Products, "
                   "HP NetRAID-4M, IBM ServeRAID & ICP SCSI driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(AAC_DRIVER_FULL_VERSION);

static DEFINE_MUTEX(aac_mutex);
static LIST_HEAD(aac_devices);
static int aac_cfg_major = AAC_CHARDEV_UNREGISTERED;
char aac_driver_version[] = AAC_DRIVER_FULL_VERSION;

/*
 * Because of the way Linux names scsi devices, the order in this table has
 * become important.  Check for on-board Raid first, add-in cards second.
 *
 * Note: The last field is used to index into aac_drivers below.
 */
static const struct pci_device_id aac_pci_tbl[] = {
        { 0x1028, 0x0001, 0x1028, 0x0001, 0, 0, 0 }, /* PERC 2/Si (Iguana/PERC2Si) */
        { 0x1028, 0x0002, 0x1028, 0x0002, 0, 0, 1 }, /* PERC 3/Di (Opal/PERC3Di) */
        { 0x1028, 0x0003, 0x1028, 0x0003, 0, 0, 2 }, /* PERC 3/Si (SlimFast/PERC3Si */
        { 0x1028, 0x0004, 0x1028, 0x00d0, 0, 0, 3 }, /* PERC 3/Di (Iguana FlipChip/PERC3DiF */
        { 0x1028, 0x0002, 0x1028, 0x00d1, 0, 0, 4 }, /* PERC 3/Di (Viper/PERC3DiV) */
        { 0x1028, 0x0002, 0x1028, 0x00d9, 0, 0, 5 }, /* PERC 3/Di (Lexus/PERC3DiL) */
        { 0x1028, 0x000a, 0x1028, 0x0106, 0, 0, 6 }, /* PERC 3/Di (Jaguar/PERC3DiJ) */
        { 0x1028, 0x000a, 0x1028, 0x011b, 0, 0, 7 }, /* PERC 3/Di (Dagger/PERC3DiD) */
        { 0x1028, 0x000a, 0x1028, 0x0121, 0, 0, 8 }, /* PERC 3/Di (Boxster/PERC3DiB) */
        { 0x9005, 0x0283, 0x9005, 0x0283, 0, 0, 9 }, /* catapult */
        { 0x9005, 0x0284, 0x9005, 0x0284, 0, 0, 10 }, /* tomcat */
        { 0x9005, 0x0285, 0x9005, 0x0286, 0, 0, 11 }, /* Adaptec 2120S (Crusader) */
        { 0x9005, 0x0285, 0x9005, 0x0285, 0, 0, 12 }, /* Adaptec 2200S (Vulcan) */
        { 0x9005, 0x0285, 0x9005, 0x0287, 0, 0, 13 }, /* Adaptec 2200S (Vulcan-2m) */
        { 0x9005, 0x0285, 0x17aa, 0x0286, 0, 0, 14 }, /* Legend S220 (Legend Crusader) */
        { 0x9005, 0x0285, 0x17aa, 0x0287, 0, 0, 15 }, /* Legend S230 (Legend Vulcan) */

        { 0x9005, 0x0285, 0x9005, 0x0288, 0, 0, 16 }, /* Adaptec 3230S (Harrier) */
        { 0x9005, 0x0285, 0x9005, 0x0289, 0, 0, 17 }, /* Adaptec 3240S (Tornado) */
        { 0x9005, 0x0285, 0x9005, 0x028a, 0, 0, 18 }, /* ASR-2020ZCR SCSI PCI-X ZCR (Skyhawk) */
        { 0x9005, 0x0285, 0x9005, 0x028b, 0, 0, 19 }, /* ASR-2025ZCR SCSI SO-DIMM PCI-X ZCR (Terminator) */
        { 0x9005, 0x0286, 0x9005, 0x028c, 0, 0, 20 }, /* ASR-2230S + ASR-2230SLP PCI-X (Lancer) */
        { 0x9005, 0x0286, 0x9005, 0x028d, 0, 0, 21 }, /* ASR-2130S (Lancer) */
        { 0x9005, 0x0286, 0x9005, 0x029b, 0, 0, 22 }, /* AAR-2820SA (Intruder) */
        { 0x9005, 0x0286, 0x9005, 0x029c, 0, 0, 23 }, /* AAR-2620SA (Intruder) */
        { 0x9005, 0x0286, 0x9005, 0x029d, 0, 0, 24 }, /* AAR-2420SA (Intruder) */
        { 0x9005, 0x0286, 0x9005, 0x029e, 0, 0, 25 }, /* ICP9024RO (Lancer) */
        { 0x9005, 0x0286, 0x9005, 0x029f, 0, 0, 26 }, /* ICP9014RO (Lancer) */
        { 0x9005, 0x0286, 0x9005, 0x02a0, 0, 0, 27 }, /* ICP9047MA (Lancer) */
        { 0x9005, 0x0286, 0x9005, 0x02a1, 0, 0, 28 }, /* ICP9087MA (Lancer) */
        { 0x9005, 0x0286, 0x9005, 0x02a3, 0, 0, 29 }, /* ICP5445AU (Hurricane44) */
        { 0x9005, 0x0285, 0x9005, 0x02a4, 0, 0, 30 }, /* ICP9085LI (Marauder-X) */
        { 0x9005, 0x0285, 0x9005, 0x02a5, 0, 0, 31 }, /* ICP5085BR (Marauder-E) */
        { 0x9005, 0x0286, 0x9005, 0x02a6, 0, 0, 32 }, /* ICP9067MA (Intruder-6) */
        { 0x9005, 0x0287, 0x9005, 0x0800, 0, 0, 33 }, /* Themisto Jupiter Platform */
        { 0x9005, 0x0200, 0x9005, 0x0200, 0, 0, 33 }, /* Themisto Jupiter Platform */
        { 0x9005, 0x0286, 0x9005, 0x0800, 0, 0, 34 }, /* Callisto Jupiter Platform */
        { 0x9005, 0x0285, 0x9005, 0x028e, 0, 0, 35 }, /* ASR-2020SA SATA PCI-X ZCR (Skyhawk) */
        { 0x9005, 0x0285, 0x9005, 0x028f, 0, 0, 36 }, /* ASR-2025SA SATA SO-DIMM PCI-X ZCR (Terminator) */
        { 0x9005, 0x0285, 0x9005, 0x0290, 0, 0, 37 }, /* AAR-2410SA PCI SATA 4ch (Jaguar II) */
        { 0x9005, 0x0285, 0x1028, 0x0291, 0, 0, 38 }, /* CERC SATA RAID 2 PCI SATA 6ch (DellCorsair) */
        { 0x9005, 0x0285, 0x9005, 0x0292, 0, 0, 39 }, /* AAR-2810SA PCI SATA 8ch (Corsair-8) */
        { 0x9005, 0x0285, 0x9005, 0x0293, 0, 0, 40 }, /* AAR-21610SA PCI SATA 16ch (Corsair-16) */
        { 0x9005, 0x0285, 0x9005, 0x0294, 0, 0, 41 }, /* ESD SO-DIMM PCI-X SATA ZCR (Prowler) */
        { 0x9005, 0x0285, 0x103C, 0x3227, 0, 0, 42 }, /* AAR-2610SA PCI SATA 6ch */
        { 0x9005, 0x0285, 0x9005, 0x0296, 0, 0, 43 }, /* ASR-2240S (SabreExpress) */
        { 0x9005, 0x0285, 0x9005, 0x0297, 0, 0, 44 }, /* ASR-4005 */
        { 0x9005, 0x0285, 0x1014, 0x02F2, 0, 0, 45 }, /* IBM 8i (AvonPark) */
        { 0x9005, 0x0285, 0x1014, 0x0312, 0, 0, 45 }, /* IBM 8i (AvonPark Lite) */
        { 0x9005, 0x0286, 0x1014, 0x9580, 0, 0, 46 }, /* IBM 8k/8k-l8 (Aurora) */
        { 0x9005, 0x0286, 0x1014, 0x9540, 0, 0, 47 }, /* IBM 8k/8k-l4 (Aurora Lite) */
        { 0x9005, 0x0285, 0x9005, 0x0298, 0, 0, 48 }, /* ASR-4000 (BlackBird) */
        { 0x9005, 0x0285, 0x9005, 0x0299, 0, 0, 49 }, /* ASR-4800SAS (Marauder-X) */
        { 0x9005, 0x0285, 0x9005, 0x029a, 0, 0, 50 }, /* ASR-4805SAS (Marauder-E) */
        { 0x9005, 0x0286, 0x9005, 0x02a2, 0, 0, 51 }, /* ASR-3800 (Hurricane44) */

        { 0x9005, 0x0285, 0x1028, 0x0287, 0, 0, 52 }, /* Perc 320/DC*/
        { 0x1011, 0x0046, 0x9005, 0x0365, 0, 0, 53 }, /* Adaptec 5400S (Mustang)*/
        { 0x1011, 0x0046, 0x9005, 0x0364, 0, 0, 54 }, /* Adaptec 5400S (Mustang)*/
        { 0x1011, 0x0046, 0x9005, 0x1364, 0, 0, 55 }, /* Dell PERC2/QC */
        { 0x1011, 0x0046, 0x103c, 0x10c2, 0, 0, 56 }, /* HP NetRAID-4M */

        { 0x9005, 0x0285, 0x1028, PCI_ANY_ID, 0, 0, 57 }, /* Dell Catchall */
        { 0x9005, 0x0285, 0x17aa, PCI_ANY_ID, 0, 0, 58 }, /* Legend Catchall */
        { 0x9005, 0x0285, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 59 }, /* Adaptec Catch All */
        { 0x9005, 0x0286, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 60 }, /* Adaptec Rocket Catch All */
        { 0x9005, 0x0288, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 61 }, /* Adaptec NEMER/ARK Catch All */
        { 0x9005, 0x028b, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 62 }, /* Adaptec PMC Series 6 (Tupelo) */
        { 0x9005, 0x028c, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 63 }, /* Adaptec PMC Series 7 (Denali) */
        { 0x9005, 0x028d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 64 }, /* Adaptec PMC Series 8 */
        { 0,}
};
MODULE_DEVICE_TABLE(pci, aac_pci_tbl);

/*
 * dmb - For now we add the number of channels to this structure.
 * In the future we should add a fib that reports the number of channels
 * for the card.  At that time we can remove the channels from here
 */
static struct aac_driver_ident aac_drivers[] = {
        { aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* PERC 2/Si (Iguana/PERC2Si) */
        { aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* PERC 3/Di (Opal/PERC3Di) */
        { aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* PERC 3/Si (SlimFast/PERC3Si */
        { aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* PERC 3/Di (Iguana FlipChip/PERC3DiF */
        { aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* PERC 3/Di (Viper/PERC3DiV) */
        { aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* PERC 3/Di (Lexus/PERC3DiL) */
        { aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 1, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* PERC 3/Di (Jaguar/PERC3DiJ) */
        { aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* PERC 3/Di (Dagger/PERC3DiD) */
        { aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* PERC 3/Di (Boxster/PERC3DiB) */
        { aac_rx_init, "aacraid",  "ADAPTEC ", "catapult        ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* catapult */
        { aac_rx_init, "aacraid",  "ADAPTEC ", "tomcat          ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* tomcat */
        { aac_rx_init, "aacraid",  "ADAPTEC ", "Adaptec 2120S   ", 1, AAC_QUIRK_31BIT | AAC_QUIRK_34SG },                     /* Adaptec 2120S (Crusader) */
        { aac_rx_init, "aacraid",  "ADAPTEC ", "Adaptec 2200S   ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG },                     /* Adaptec 2200S (Vulcan) */
        { aac_rx_init, "aacraid",  "ADAPTEC ", "Adaptec 2200S   ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* Adaptec 2200S (Vulcan-2m) */
        { aac_rx_init, "aacraid",  "Legend  ", "Legend S220     ", 1, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* Legend S220 (Legend Crusader) */
        { aac_rx_init, "aacraid",  "Legend  ", "Legend S230     ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* Legend S230 (Legend Vulcan) */

        { aac_rx_init, "aacraid",  "ADAPTEC ", "Adaptec 3230S   ", 2 }, /* Adaptec 3230S (Harrier) */
        { aac_rx_init, "aacraid",  "ADAPTEC ", "Adaptec 3240S   ", 2 }, /* Adaptec 3240S (Tornado) */
        { aac_rx_init, "aacraid",  "ADAPTEC ", "ASR-2020ZCR     ", 2 }, /* ASR-2020ZCR SCSI PCI-X ZCR (Skyhawk) */
        { aac_rx_init, "aacraid",  "ADAPTEC ", "ASR-2025ZCR     ", 2 }, /* ASR-2025ZCR SCSI SO-DIMM PCI-X ZCR (Terminator) */
        { aac_rkt_init, "aacraid",  "ADAPTEC ", "ASR-2230S PCI-X ", 2 }, /* ASR-2230S + ASR-2230SLP PCI-X (Lancer) */
        { aac_rkt_init, "aacraid",  "ADAPTEC ", "ASR-2130S PCI-X ", 1 }, /* ASR-2130S (Lancer) */
        { aac_rkt_init, "aacraid",  "ADAPTEC ", "AAR-2820SA      ", 1 }, /* AAR-2820SA (Intruder) */
        { aac_rkt_init, "aacraid",  "ADAPTEC ", "AAR-2620SA      ", 1 }, /* AAR-2620SA (Intruder) */
        { aac_rkt_init, "aacraid",  "ADAPTEC ", "AAR-2420SA      ", 1 }, /* AAR-2420SA (Intruder) */
        { aac_rkt_init, "aacraid",  "ICP     ", "ICP9024RO       ", 2 }, /* ICP9024RO (Lancer) */
        { aac_rkt_init, "aacraid",  "ICP     ", "ICP9014RO       ", 1 }, /* ICP9014RO (Lancer) */
        { aac_rkt_init, "aacraid",  "ICP     ", "ICP9047MA       ", 1 }, /* ICP9047MA (Lancer) */
        { aac_rkt_init, "aacraid",  "ICP     ", "ICP9087MA       ", 1 }, /* ICP9087MA (Lancer) */
        { aac_rkt_init, "aacraid",  "ICP     ", "ICP5445AU       ", 1 }, /* ICP5445AU (Hurricane44) */
        { aac_rx_init, "aacraid",  "ICP     ", "ICP9085LI       ", 1 }, /* ICP9085LI (Marauder-X) */
        { aac_rx_init, "aacraid",  "ICP     ", "ICP5085BR       ", 1 }, /* ICP5085BR (Marauder-E) */
        { aac_rkt_init, "aacraid",  "ICP     ", "ICP9067MA       ", 1 }, /* ICP9067MA (Intruder-6) */
        { NULL        , "aacraid",  "ADAPTEC ", "Themisto        ", 0, AAC_QUIRK_SLAVE }, /* Jupiter Platform */
        { aac_rkt_init, "aacraid",  "ADAPTEC ", "Callisto        ", 2, AAC_QUIRK_MASTER }, /* Jupiter Platform */
        { aac_rx_init, "aacraid",  "ADAPTEC ", "ASR-2020SA       ", 1 }, /* ASR-2020SA SATA PCI-X ZCR (Skyhawk) */
        { aac_rx_init, "aacraid",  "ADAPTEC ", "ASR-2025SA       ", 1 }, /* ASR-2025SA SATA SO-DIMM PCI-X ZCR (Terminator) */
        { aac_rx_init, "aacraid",  "ADAPTEC ", "AAR-2410SA SATA ", 1, AAC_QUIRK_17SG }, /* AAR-2410SA PCI SATA 4ch (Jaguar II) */
        { aac_rx_init, "aacraid",  "DELL    ", "CERC SR2        ", 1, AAC_QUIRK_17SG }, /* CERC SATA RAID 2 PCI SATA 6ch (DellCorsair) */
        { aac_rx_init, "aacraid",  "ADAPTEC ", "AAR-2810SA SATA ", 1, AAC_QUIRK_17SG }, /* AAR-2810SA PCI SATA 8ch (Corsair-8) */
        { aac_rx_init, "aacraid",  "ADAPTEC ", "AAR-21610SA SATA", 1, AAC_QUIRK_17SG }, /* AAR-21610SA PCI SATA 16ch (Corsair-16) */
        { aac_rx_init, "aacraid",  "ADAPTEC ", "ASR-2026ZCR     ", 1 }, /* ESD SO-DIMM PCI-X SATA ZCR (Prowler) */
        { aac_rx_init, "aacraid",  "ADAPTEC ", "AAR-2610SA      ", 1 }, /* SATA 6Ch (Bearcat) */
        { aac_rx_init, "aacraid",  "ADAPTEC ", "ASR-2240S       ", 1 }, /* ASR-2240S (SabreExpress) */
        { aac_rx_init, "aacraid",  "ADAPTEC ", "ASR-4005        ", 1 }, /* ASR-4005 */
        { aac_rx_init, "ServeRAID","IBM     ", "ServeRAID 8i    ", 1 }, /* IBM 8i (AvonPark) */
        { aac_rkt_init, "ServeRAID","IBM     ", "ServeRAID 8k-l8 ", 1 }, /* IBM 8k/8k-l8 (Aurora) */
        { aac_rkt_init, "ServeRAID","IBM     ", "ServeRAID 8k-l4 ", 1 }, /* IBM 8k/8k-l4 (Aurora Lite) */
        { aac_rx_init, "aacraid",  "ADAPTEC ", "ASR-4000        ", 1 }, /* ASR-4000 (BlackBird & AvonPark) */
        { aac_rx_init, "aacraid",  "ADAPTEC ", "ASR-4800SAS     ", 1 }, /* ASR-4800SAS (Marauder-X) */
        { aac_rx_init, "aacraid",  "ADAPTEC ", "ASR-4805SAS     ", 1 }, /* ASR-4805SAS (Marauder-E) */
        { aac_rkt_init, "aacraid",  "ADAPTEC ", "ASR-3800        ", 1 }, /* ASR-3800 (Hurricane44) */

        { aac_rx_init, "percraid", "DELL    ", "PERC 320/DC     ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG }, /* Perc 320/DC*/
        { aac_sa_init, "aacraid",  "ADAPTEC ", "Adaptec 5400S   ", 4, AAC_QUIRK_34SG }, /* Adaptec 5400S (Mustang)*/
        { aac_sa_init, "aacraid",  "ADAPTEC ", "AAC-364         ", 4, AAC_QUIRK_34SG }, /* Adaptec 5400S (Mustang)*/
        { aac_sa_init, "percraid", "DELL    ", "PERCRAID        ", 4, AAC_QUIRK_34SG }, /* Dell PERC2/QC */
        { aac_sa_init, "hpnraid",  "HP      ", "NetRAID         ", 4, AAC_QUIRK_34SG }, /* HP NetRAID-4M */

        { aac_rx_init, "aacraid",  "DELL    ", "RAID            ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* Dell Catchall */
        { aac_rx_init, "aacraid",  "Legend  ", "RAID            ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* Legend Catchall */
        { aac_rx_init, "aacraid",  "ADAPTEC ", "RAID            ", 2 }, /* Adaptec Catch All */
        { aac_rkt_init, "aacraid", "ADAPTEC ", "RAID            ", 2 }, /* Adaptec Rocket Catch All */
        { aac_nark_init, "aacraid", "ADAPTEC ", "RAID           ", 2 }, /* Adaptec NEMER/ARK Catch All */
        { aac_src_init, "aacraid", "ADAPTEC ", "RAID            ", 2, AAC_QUIRK_SRC }, /* Adaptec PMC Series 6 (Tupelo) */
        { aac_srcv_init, "aacraid", "ADAPTEC ", "RAID            ", 2, AAC_QUIRK_SRC }, /* Adaptec PMC Series 7 (Denali) */
        { aac_srcv_init, "aacraid", "ADAPTEC ", "RAID            ", 2, AAC_QUIRK_SRC }, /* Adaptec PMC Series 8 */
};

/**
 *      aac_queuecommand        -       queue a SCSI command
 *      @shost:         Scsi host to queue command on
 *      @cmd:           SCSI command to queue
 *
 *      Queues a command for execution by the associated Host Adapter.
 *
 *      TODO: unify with aac_scsi_cmd().
 */

static int aac_queuecommand(struct Scsi_Host *shost,
                            struct scsi_cmnd *cmd)
{
        int r = 0;
        cmd->SCp.phase = AAC_OWNER_LOWLEVEL;
        r = (aac_scsi_cmd(cmd) ? FAILED : 0);
        return r;
}

/**
 *      aac_info                -       Returns the host adapter name
 *      @shost:         Scsi host to report on
 *
 *      Returns a static string describing the device in question
 */

static const char *aac_info(struct Scsi_Host *shost)
{
        struct aac_dev *dev = (struct aac_dev *)shost->hostdata;
        return aac_drivers[dev->cardtype].name;
}

/**
 *      aac_get_driver_ident
 *      @devtype: index into lookup table
 *
 *      Returns a pointer to the entry in the driver lookup table.
 */

struct aac_driver_ident* aac_get_driver_ident(int devtype)
{
        return &aac_drivers[devtype];
}

/**
 *      aac_biosparm    -       return BIOS parameters for disk
 *      @sdev: The scsi device corresponding to the disk
 *      @bdev: the block device corresponding to the disk
 *      @capacity: the sector capacity of the disk
 *      @geom: geometry block to fill in
 *
 *      Return the Heads/Sectors/Cylinders BIOS Disk Parameters for Disk.
 *      The default disk geometry is 64 heads, 32 sectors, and the appropriate
 *      number of cylinders so as not to exceed drive capacity.  In order for
 *      disks equal to or larger than 1 GB to be addressable by the BIOS
 *      without exceeding the BIOS limitation of 1024 cylinders, Extended
 *      Translation should be enabled.   With Extended Translation enabled,
 *      drives between 1 GB inclusive and 2 GB exclusive are given a disk
 *      geometry of 128 heads and 32 sectors, and drives above 2 GB inclusive
 *      are given a disk geometry of 255 heads and 63 sectors.  However, if
 *      the BIOS detects that the Extended Translation setting does not match
 *      the geometry in the partition table, then the translation inferred
 *      from the partition table will be used by the BIOS, and a warning may
 *      be displayed.
 */

static int aac_biosparm(struct scsi_device *sdev, struct block_device *bdev,
                        sector_t capacity, int *geom)
{
        struct diskparm *param = (struct diskparm *)geom;
        unsigned char *buf;

        dprintk((KERN_DEBUG "aac_biosparm.\n"));

        /*
         *      Assuming extended translation is enabled - #REVISIT#
         */
        if (capacity >= 2 * 1024 * 1024) { /* 1 GB in 512 byte sectors */
                if(capacity >= 4 * 1024 * 1024) { /* 2 GB in 512 byte sectors */
                        param->heads = 255;
                        param->sectors = 63;
                } else {
                        param->heads = 128;
                        param->sectors = 32;
                }
        } else {
                param->heads = 64;
                param->sectors = 32;
        }

        param->cylinders = cap_to_cyls(capacity, param->heads * param->sectors);

        /*
         *      Read the first 1024 bytes from the disk device, if the boot
         *      sector partition table is valid, search for a partition table
         *      entry whose end_head matches one of the standard geometry
         *      translations ( 64/32, 128/32, 255/63 ).
         */
        buf = scsi_bios_ptable(bdev);
        if (!buf)
                return 0;
        if (*(__le16 *)(buf + 0x40) == cpu_to_le16(MSDOS_LABEL_MAGIC)) {
                struct msdos_partition *first = (struct msdos_partition *)buf;
                struct msdos_partition *entry = first;
                int saved_cylinders = param->cylinders;
                int num;
                unsigned char end_head, end_sec;

                for(num = 0; num < 4; num++) {
                        end_head = entry->end_head;
                        end_sec = entry->end_sector & 0x3f;

                        if(end_head == 63) {
                                param->heads = 64;
                                param->sectors = 32;
                                break;
                        } else if(end_head == 127) {
                                param->heads = 128;
                                param->sectors = 32;
                                break;
                        } else if(end_head == 254) {
                                param->heads = 255;
                                param->sectors = 63;
                                break;
                        }
                        entry++;
                }

                if (num == 4) {
                        end_head = first->end_head;
                        end_sec = first->end_sector & 0x3f;
                }

                param->cylinders = cap_to_cyls(capacity, param->heads * param->sectors);
                if (num < 4 && end_sec == param->sectors) {
                        if (param->cylinders != saved_cylinders) {
                                dprintk((KERN_DEBUG "Adopting geometry: heads=%d, sectors=%d from partition table %d.\n",
                                        param->heads, param->sectors, num));
                        }
                } else if (end_head > 0 || end_sec > 0) {
                        dprintk((KERN_DEBUG "Strange geometry: heads=%d, sectors=%d in partition table %d.\n",
                                end_head + 1, end_sec, num));
                        dprintk((KERN_DEBUG "Using geometry: heads=%d, sectors=%d.\n",
                                        param->heads, param->sectors));
                }
        }
        kfree(buf);
        return 0;
}

/**
 *      aac_slave_configure             -       compute queue depths
 *      @sdev:  SCSI device we are considering
 *
 *      Selects queue depths for each target device based on the host adapter's
 *      total capacity and the queue depth supported by the target device.
 *      A queue depth of one automatically disables tagged queueing.
 */

static int aac_slave_configure(struct scsi_device *sdev)
{
        struct aac_dev *aac = (struct aac_dev *)sdev->host->hostdata;
        int chn, tid;
        unsigned int depth = 0;
        unsigned int set_timeout = 0;
        int timeout = 0;
        bool set_qd_dev_type = false;
        u8 devtype = 0;

        chn = aac_logical_to_phys(sdev_channel(sdev));
        tid = sdev_id(sdev);
        if (chn < AAC_MAX_BUSES && tid < AAC_MAX_TARGETS && aac->sa_firmware) {
                devtype = aac->hba_map[chn][tid].devtype;

                if (devtype == AAC_DEVTYPE_NATIVE_RAW) {
                        depth = aac->hba_map[chn][tid].qd_limit;
                        set_timeout = 1;
                        goto common_config;
                }
                if (devtype == AAC_DEVTYPE_ARC_RAW) {
                        set_qd_dev_type = true;
                        set_timeout = 1;
                        goto common_config;
                }
        }

        if (aac->jbod && (sdev->type == TYPE_DISK))
                sdev->removable = 1;

        if (sdev->type == TYPE_DISK
         && sdev_channel(sdev) != CONTAINER_CHANNEL
         && (!aac->jbod || sdev->inq_periph_qual)
         && (!aac->raid_scsi_mode || (sdev_channel(sdev) != 2))) {

                if (expose_physicals == 0)
                        return -ENXIO;

                if (expose_physicals < 0)
                        sdev->no_uld_attach = 1;
        }

        if (sdev->tagged_supported
         &&  sdev->type == TYPE_DISK
         &&  (!aac->raid_scsi_mode || (sdev_channel(sdev) != 2))
         && !sdev->no_uld_attach) {

                struct scsi_device * dev;
                struct Scsi_Host *host = sdev->host;
                unsigned num_lsu = 0;
                unsigned num_one = 0;
                unsigned cid;

                set_timeout = 1;

                for (cid = 0; cid < aac->maximum_num_containers; ++cid)
                        if (aac->fsa_dev[cid].valid)
                                ++num_lsu;

                __shost_for_each_device(dev, host) {
                        if (dev->tagged_supported
                         && dev->type == TYPE_DISK
                         && (!aac->raid_scsi_mode || (sdev_channel(sdev) != 2))
                         && !dev->no_uld_attach) {
                                if ((sdev_channel(dev) != CONTAINER_CHANNEL)
                                 || !aac->fsa_dev[sdev_id(dev)].valid) {
                                        ++num_lsu;
                                }
                        } else {
                                ++num_one;
                        }
                }

                if (num_lsu == 0)
                        ++num_lsu;

                depth = (host->can_queue - num_one) / num_lsu;

                if (sdev_channel(sdev) != NATIVE_CHANNEL)
                        goto common_config;

                set_qd_dev_type = true;

        }

common_config:

        /*
         * Check if SATA drive
         */
        if (set_qd_dev_type) {
                if (strncmp(sdev->vendor, "ATA", 3) == 0)
                        depth = 32;
                else
                        depth = 64;
        }

        /*
         * Firmware has an individual device recovery time typically
         * of 35 seconds, give us a margin. Thor devices can take longer in
         * error recovery, hence different value.
         */
        if (set_timeout) {
                timeout = aac->sa_firmware ? AAC_SA_TIMEOUT : AAC_ARC_TIMEOUT;
                blk_queue_rq_timeout(sdev->request_queue, timeout * HZ);
        }

        if (depth > 256)
                depth = 256;
        else if (depth < 1)
                depth = 1;

        scsi_change_queue_depth(sdev, depth);

        sdev->tagged_supported = 1;

        return 0;
}

/**
 *      aac_change_queue_depth          -       alter queue depths
 *      @sdev:  SCSI device we are considering
 *      @depth: desired queue depth
 *
 *      Alters queue depths for target device based on the host adapter's
 *      total capacity and the queue depth supported by the target device.
 */

static int aac_change_queue_depth(struct scsi_device *sdev, int depth)
{
        struct aac_dev *aac = (struct aac_dev *)(sdev->host->hostdata);
        int chn, tid, is_native_device = 0;

        chn = aac_logical_to_phys(sdev_channel(sdev));
        tid = sdev_id(sdev);
        if (chn < AAC_MAX_BUSES && tid < AAC_MAX_TARGETS &&
                aac->hba_map[chn][tid].devtype == AAC_DEVTYPE_NATIVE_RAW)
                is_native_device = 1;

        if (sdev->tagged_supported && (sdev->type == TYPE_DISK) &&
            (sdev_channel(sdev) == CONTAINER_CHANNEL)) {
                struct scsi_device * dev;
                struct Scsi_Host *host = sdev->host;
                unsigned num = 0;

                __shost_for_each_device(dev, host) {
                        if (dev->tagged_supported && (dev->type == TYPE_DISK) &&
                            (sdev_channel(dev) == CONTAINER_CHANNEL))
                                ++num;
                        ++num;
                }
                if (num >= host->can_queue)
                        num = host->can_queue - 1;
                if (depth > (host->can_queue - num))
                        depth = host->can_queue - num;
                if (depth > 256)
                        depth = 256;
                else if (depth < 2)
                        depth = 2;
                return scsi_change_queue_depth(sdev, depth);
        } else if (is_native_device) {
                scsi_change_queue_depth(sdev, aac->hba_map[chn][tid].qd_limit);
        } else {
                scsi_change_queue_depth(sdev, 1);
        }
        return sdev->queue_depth;
}

static ssize_t aac_show_raid_level(struct device *dev, struct device_attribute *attr, char *buf)
{
        struct scsi_device *sdev = to_scsi_device(dev);
        struct aac_dev *aac = (struct aac_dev *)(sdev->host->hostdata);
        if (sdev_channel(sdev) != CONTAINER_CHANNEL)
                return snprintf(buf, PAGE_SIZE, sdev->no_uld_attach
                  ? "Hidden\n" :
                  ((aac->jbod && (sdev->type == TYPE_DISK)) ? "JBOD\n" : ""));
        return snprintf(buf, PAGE_SIZE, "%s\n",
          get_container_type(aac->fsa_dev[sdev_id(sdev)].type));
}

static struct device_attribute aac_raid_level_attr = {
        .attr = {
                .name = "level",
                .mode = S_IRUGO,
        },
        .show = aac_show_raid_level
};

static ssize_t aac_show_unique_id(struct device *dev,
             struct device_attribute *attr, char *buf)
{
        struct scsi_device *sdev = to_scsi_device(dev);
        struct aac_dev *aac = (struct aac_dev *)(sdev->host->hostdata);
        unsigned char sn[16];

        memset(sn, 0, sizeof(sn));

        if (sdev_channel(sdev) == CONTAINER_CHANNEL)
                memcpy(sn, aac->fsa_dev[sdev_id(sdev)].identifier, sizeof(sn));

        return snprintf(buf, 16 * 2 + 2,
                "%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X\n",
                sn[0], sn[1], sn[2], sn[3],
                sn[4], sn[5], sn[6], sn[7],
                sn[8], sn[9], sn[10], sn[11],
                sn[12], sn[13], sn[14], sn[15]);
}

static struct device_attribute aac_unique_id_attr = {
        .attr = {
                .name = "unique_id",
                .mode = 0444,
        },
        .show = aac_show_unique_id
};



static struct device_attribute *aac_dev_attrs[] = {
        &aac_raid_level_attr,
        &aac_unique_id_attr,
        NULL,
};

static int aac_ioctl(struct scsi_device *sdev, unsigned int cmd,
                     void __user *arg)
{
        int retval;
        struct aac_dev *dev = (struct aac_dev *)sdev->host->hostdata;
        if (!capable(CAP_SYS_RAWIO))
                return -EPERM;
        retval = aac_adapter_check_health(dev);
        if (retval)
                return -EBUSY;
        return aac_do_ioctl(dev, cmd, arg);
}

struct fib_count_data {
        int mlcnt;
        int llcnt;
        int ehcnt;
        int fwcnt;
        int krlcnt;
};

static bool fib_count_iter(struct scsi_cmnd *scmnd, void *data, bool reserved)
{
        struct fib_count_data *fib_count = data;

        switch (scmnd->SCp.phase) {
        case AAC_OWNER_FIRMWARE:
                fib_count->fwcnt++;
                break;
        case AAC_OWNER_ERROR_HANDLER:
                fib_count->ehcnt++;
                break;
        case AAC_OWNER_LOWLEVEL:
                fib_count->llcnt++;
                break;
        case AAC_OWNER_MIDLEVEL:
                fib_count->mlcnt++;
                break;
        default:
                fib_count->krlcnt++;
                break;
        }
        return true;
}

/* Called during SCSI EH, so we don't need to block requests */
static int get_num_of_incomplete_fibs(struct aac_dev *aac)
{
        struct Scsi_Host *shost = aac->scsi_host_ptr;
        struct device *ctrl_dev;
        struct fib_count_data fcnt = { };

        scsi_host_busy_iter(shost, fib_count_iter, &fcnt);

        ctrl_dev = &aac->pdev->dev;

        dev_info(ctrl_dev, "outstanding cmd: midlevel-%d\n", fcnt.mlcnt);
        dev_info(ctrl_dev, "outstanding cmd: lowlevel-%d\n", fcnt.llcnt);
        dev_info(ctrl_dev, "outstanding cmd: error handler-%d\n", fcnt.ehcnt);
        dev_info(ctrl_dev, "outstanding cmd: firmware-%d\n", fcnt.fwcnt);
        dev_info(ctrl_dev, "outstanding cmd: kernel-%d\n", fcnt.krlcnt);

        return fcnt.mlcnt + fcnt.llcnt + fcnt.ehcnt + fcnt.fwcnt;
}

static int aac_eh_abort(struct scsi_cmnd* cmd)
{
        struct scsi_device * dev = cmd->device;
        struct Scsi_Host * host = dev->host;
        struct aac_dev * aac = (struct aac_dev *)host->hostdata;
        int count, found;
        u32 bus, cid;
        int ret = FAILED;

        if (aac_adapter_check_health(aac))
                return ret;

        bus = aac_logical_to_phys(scmd_channel(cmd));
        cid = scmd_id(cmd);
        if (aac->hba_map[bus][cid].devtype == AAC_DEVTYPE_NATIVE_RAW) {
                struct fib *fib;
                struct aac_hba_tm_req *tmf;
                int status;
                u64 address;

                pr_err("%s: Host adapter abort request (%d,%d,%d,%d)\n",
                 AAC_DRIVERNAME,
                 host->host_no, sdev_channel(dev), sdev_id(dev), (int)dev->lun);

                found = 0;
                for (count = 0; count < (host->can_queue + AAC_NUM_MGT_FIB); ++count) {
                        fib = &aac->fibs[count];
                        if (*(u8 *)fib->hw_fib_va != 0 &&
                                (fib->flags & FIB_CONTEXT_FLAG_NATIVE_HBA) &&
                                (fib->callback_data == cmd)) {
                                found = 1;
                                break;
                        }
                }
                if (!found)
                        return ret;

                /* start a HBA_TMF_ABORT_TASK TMF request */
                fib = aac_fib_alloc(aac);
                if (!fib)
                        return ret;

                tmf = (struct aac_hba_tm_req *)fib->hw_fib_va;
                memset(tmf, 0, sizeof(*tmf));
                tmf->tmf = HBA_TMF_ABORT_TASK;
                tmf->it_nexus = aac->hba_map[bus][cid].rmw_nexus;
                tmf->lun[1] = cmd->device->lun;

                address = (u64)fib->hw_error_pa;
                tmf->error_ptr_hi = cpu_to_le32((u32)(address >> 32));
                tmf->error_ptr_lo = cpu_to_le32((u32)(address & 0xffffffff));
                tmf->error_length = cpu_to_le32(FW_ERROR_BUFFER_SIZE);

                fib->hbacmd_size = sizeof(*tmf);
                cmd->SCp.sent_command = 0;

                status = aac_hba_send(HBA_IU_TYPE_SCSI_TM_REQ, fib,
                                  (fib_callback) aac_hba_callback,
                                  (void *) cmd);
                if (status != -EINPROGRESS) {
                        aac_fib_complete(fib);
                        aac_fib_free(fib);
                        return ret;
                }
                /* Wait up to 15 secs for completion */
                for (count = 0; count < 15; ++count) {
                        if (cmd->SCp.sent_command) {
                                ret = SUCCESS;
                                break;
                        }
                        msleep(1000);
                }

                if (ret != SUCCESS)
                        pr_err("%s: Host adapter abort request timed out\n",
                        AAC_DRIVERNAME);
        } else {
                pr_err(
                        "%s: Host adapter abort request.\n"
                        "%s: Outstanding commands on (%d,%d,%d,%d):\n",
                        AAC_DRIVERNAME, AAC_DRIVERNAME,
                        host->host_no, sdev_channel(dev), sdev_id(dev),
                        (int)dev->lun);
                switch (cmd->cmnd[0]) {
                case SERVICE_ACTION_IN_16:
                        if (!(aac->raw_io_interface) ||
                            !(aac->raw_io_64) ||
                            ((cmd->cmnd[1] & 0x1f) != SAI_READ_CAPACITY_16))
                                break;
                        fallthrough;
                case INQUIRY:
                case READ_CAPACITY:
                        /*
                         * Mark associated FIB to not complete,
                         * eh handler does this
                         */
                        for (count = 0;
                                count < (host->can_queue + AAC_NUM_MGT_FIB);
                                ++count) {
                                struct fib *fib = &aac->fibs[count];

                                if (fib->hw_fib_va->header.XferState &&
                                (fib->flags & FIB_CONTEXT_FLAG) &&
                                (fib->callback_data == cmd)) {
                                        fib->flags |=
                                                FIB_CONTEXT_FLAG_TIMED_OUT;
                                        cmd->SCp.phase =
                                                AAC_OWNER_ERROR_HANDLER;
                                        ret = SUCCESS;
                                }
                        }
                        break;
                case TEST_UNIT_READY:
                        /*
                         * Mark associated FIB to not complete,
                         * eh handler does this
                         */
                        for (count = 0;
                                count < (host->can_queue + AAC_NUM_MGT_FIB);
                                ++count) {
                                struct scsi_cmnd *command;
                                struct fib *fib = &aac->fibs[count];

                                command = fib->callback_data;

                                if ((fib->hw_fib_va->header.XferState &
                                        cpu_to_le32
                                        (Async | NoResponseExpected)) &&
                                        (fib->flags & FIB_CONTEXT_FLAG) &&
                                        ((command)) &&
                                        (command->device == cmd->device)) {
                                        fib->flags |=
                                                FIB_CONTEXT_FLAG_TIMED_OUT;
                                        command->SCp.phase =
                                                AAC_OWNER_ERROR_HANDLER;
                                        if (command == cmd)
                                                ret = SUCCESS;
                                }
                        }
                        break;
                }
        }
        return ret;
}

static u8 aac_eh_tmf_lun_reset_fib(struct aac_hba_map_info *info,
                                   struct fib *fib, u64 tmf_lun)
{
        struct aac_hba_tm_req *tmf;
        u64 address;

        /* start a HBA_TMF_LUN_RESET TMF request */
        tmf = (struct aac_hba_tm_req *)fib->hw_fib_va;
        memset(tmf, 0, sizeof(*tmf));
        tmf->tmf = HBA_TMF_LUN_RESET;
        tmf->it_nexus = info->rmw_nexus;
        int_to_scsilun(tmf_lun, (struct scsi_lun *)tmf->lun);

        address = (u64)fib->hw_error_pa;
        tmf->error_ptr_hi = cpu_to_le32
                ((u32)(address >> 32));
        tmf->error_ptr_lo = cpu_to_le32
                ((u32)(address & 0xffffffff));
        tmf->error_length = cpu_to_le32(FW_ERROR_BUFFER_SIZE);
        fib->hbacmd_size = sizeof(*tmf);

        return HBA_IU_TYPE_SCSI_TM_REQ;
}

static u8 aac_eh_tmf_hard_reset_fib(struct aac_hba_map_info *info,
                                    struct fib *fib)
{
        struct aac_hba_reset_req *rst;
        u64 address;

        /* already tried, start a hard reset now */
        rst = (struct aac_hba_reset_req *)fib->hw_fib_va;
        memset(rst, 0, sizeof(*rst));
        rst->it_nexus = info->rmw_nexus;

        address = (u64)fib->hw_error_pa;
        rst->error_ptr_hi = cpu_to_le32((u32)(address >> 32));
        rst->error_ptr_lo = cpu_to_le32((u32)(address & 0xffffffff));
        rst->error_length = cpu_to_le32(FW_ERROR_BUFFER_SIZE);
        fib->hbacmd_size = sizeof(*rst);

       return HBA_IU_TYPE_SATA_REQ;
}

static void aac_tmf_callback(void *context, struct fib *fibptr)
{
        struct aac_hba_resp *err =
                &((struct aac_native_hba *)fibptr->hw_fib_va)->resp.err;
        struct aac_hba_map_info *info = context;
        int res;

        switch (err->service_response) {
        case HBA_RESP_SVCRES_TMF_REJECTED:
                res = -1;
                break;
        case HBA_RESP_SVCRES_TMF_LUN_INVALID:
                res = 0;
                break;
        case HBA_RESP_SVCRES_TMF_COMPLETE:
        case HBA_RESP_SVCRES_TMF_SUCCEEDED:
                res = 0;
                break;
        default:
                res = -2;
                break;
        }
        aac_fib_complete(fibptr);

        info->reset_state = res;
}

/*
 *      aac_eh_dev_reset        - Device reset command handling
 *      @scsi_cmd:      SCSI command block causing the reset
 *
 */
static int aac_eh_dev_reset(struct scsi_cmnd *cmd)
{
        struct scsi_device * dev = cmd->device;
        struct Scsi_Host * host = dev->host;
        struct aac_dev * aac = (struct aac_dev *)host->hostdata;
        struct aac_hba_map_info *info;
        int count;
        u32 bus, cid;
        struct fib *fib;
        int ret = FAILED;
        int status;
        u8 command;

        bus = aac_logical_to_phys(scmd_channel(cmd));
        cid = scmd_id(cmd);

        if (bus >= AAC_MAX_BUSES || cid >= AAC_MAX_TARGETS)
                return FAILED;

        info = &aac->hba_map[bus][cid];

        if (!(info->devtype == AAC_DEVTYPE_NATIVE_RAW &&
         !(info->reset_state > 0)))
                return FAILED;

        pr_err("%s: Host device reset request. SCSI hang ?\n",
               AAC_DRIVERNAME);

        fib = aac_fib_alloc(aac);
        if (!fib)
                return ret;

        /* start a HBA_TMF_LUN_RESET TMF request */
        command = aac_eh_tmf_lun_reset_fib(info, fib, dev->lun);

        info->reset_state = 1;

        status = aac_hba_send(command, fib,
                              (fib_callback) aac_tmf_callback,
                              (void *) info);
        if (status != -EINPROGRESS) {
                info->reset_state = 0;
                aac_fib_complete(fib);
                aac_fib_free(fib);
                return ret;
        }
        /* Wait up to 15 seconds for completion */
        for (count = 0; count < 15; ++count) {
                if (info->reset_state == 0) {
                        ret = info->reset_state == 0 ? SUCCESS : FAILED;
                        break;
                }
                msleep(1000);
        }

        return ret;
}

/*
 *      aac_eh_target_reset     - Target reset command handling
 *      @scsi_cmd:      SCSI command block causing the reset
 *
 */
static int aac_eh_target_reset(struct scsi_cmnd *cmd)
{
        struct scsi_device * dev = cmd->device;
        struct Scsi_Host * host = dev->host;
        struct aac_dev * aac = (struct aac_dev *)host->hostdata;
        struct aac_hba_map_info *info;
        int count;
        u32 bus, cid;
        int ret = FAILED;
        struct fib *fib;
        int status;
        u8 command;

        bus = aac_logical_to_phys(scmd_channel(cmd));
        cid = scmd_id(cmd);

        if (bus >= AAC_MAX_BUSES || cid >= AAC_MAX_TARGETS)
                return FAILED;

        info = &aac->hba_map[bus][cid];

        if (!(info->devtype == AAC_DEVTYPE_NATIVE_RAW &&
         !(info->reset_state > 0)))
                return FAILED;

        pr_err("%s: Host target reset request. SCSI hang ?\n",
               AAC_DRIVERNAME);

        fib = aac_fib_alloc(aac);
        if (!fib)
                return ret;


        /* already tried, start a hard reset now */
        command = aac_eh_tmf_hard_reset_fib(info, fib);

        info->reset_state = 2;

        status = aac_hba_send(command, fib,
                              (fib_callback) aac_tmf_callback,
                              (void *) info);

        if (status != -EINPROGRESS) {
                info->reset_state = 0;
                aac_fib_complete(fib);
                aac_fib_free(fib);
                return ret;
        }

        /* Wait up to 15 seconds for completion */
        for (count = 0; count < 15; ++count) {
                if (info->reset_state <= 0) {
                        ret = info->reset_state == 0 ? SUCCESS : FAILED;
                        break;
                }
                msleep(1000);
        }

        return ret;
}

/*
 *      aac_eh_bus_reset        - Bus reset command handling
 *      @scsi_cmd:      SCSI command block causing the reset
 *
 */
static int aac_eh_bus_reset(struct scsi_cmnd* cmd)
{
        struct scsi_device * dev = cmd->device;
        struct Scsi_Host * host = dev->host;
        struct aac_dev * aac = (struct aac_dev *)host->hostdata;
        int count;
        u32 cmd_bus;
        int status = 0;


        cmd_bus = aac_logical_to_phys(scmd_channel(cmd));
        /* Mark the assoc. FIB to not complete, eh handler does this */
        for (count = 0; count < (host->can_queue + AAC_NUM_MGT_FIB); ++count) {
                struct fib *fib = &aac->fibs[count];

                if (fib->hw_fib_va->header.XferState &&
                    (fib->flags & FIB_CONTEXT_FLAG) &&
                    (fib->flags & FIB_CONTEXT_FLAG_SCSI_CMD)) {
                        struct aac_hba_map_info *info;
                        u32 bus, cid;

                        cmd = (struct scsi_cmnd *)fib->callback_data;
                        bus = aac_logical_to_phys(scmd_channel(cmd));
                        if (bus != cmd_bus)
                                continue;
                        cid = scmd_id(cmd);
                        info = &aac->hba_map[bus][cid];
                        if (bus >= AAC_MAX_BUSES || cid >= AAC_MAX_TARGETS ||
                            info->devtype != AAC_DEVTYPE_NATIVE_RAW) {
                                fib->flags |= FIB_CONTEXT_FLAG_EH_RESET;
                                cmd->SCp.phase = AAC_OWNER_ERROR_HANDLER;
                        }
                }
        }

        pr_err("%s: Host bus reset request. SCSI hang ?\n", AAC_DRIVERNAME);

        /*
         * Check the health of the controller
         */
        status = aac_adapter_check_health(aac);
        if (status)
                dev_err(&aac->pdev->dev, "Adapter health - %d\n", status);

        count = get_num_of_incomplete_fibs(aac);
        return (count == 0) ? SUCCESS : FAILED;
}

/*
 *      aac_eh_host_reset       - Host reset command handling
 *      @scsi_cmd:      SCSI command block causing the reset
 *
 */
static int aac_eh_host_reset(struct scsi_cmnd *cmd)
{
        struct scsi_device * dev = cmd->device;
        struct Scsi_Host * host = dev->host;
        struct aac_dev * aac = (struct aac_dev *)host->hostdata;
        int ret = FAILED;
        __le32 supported_options2 = 0;
        bool is_mu_reset;
        bool is_ignore_reset;
        bool is_doorbell_reset;

        /*
         * Check if reset is supported by the firmware
         */
        supported_options2 = aac->supplement_adapter_info.supported_options2;
        is_mu_reset = supported_options2 & AAC_OPTION_MU_RESET;
        is_doorbell_reset = supported_options2 & AAC_OPTION_DOORBELL_RESET;
        is_ignore_reset = supported_options2 & AAC_OPTION_IGNORE_RESET;
        /*
         * This adapter needs a blind reset, only do so for
         * Adapters that support a register, instead of a commanded,
         * reset.
         */
        if ((is_mu_reset || is_doorbell_reset)
         && aac_check_reset
         && (aac_check_reset != -1 || !is_ignore_reset)) {
                /* Bypass wait for command quiesce */
                if (aac_reset_adapter(aac, 2, IOP_HWSOFT_RESET) == 0)
                        ret = SUCCESS;
        }
        /*
         * Reset EH state
         */
        if (ret == SUCCESS) {
                int bus, cid;
                struct aac_hba_map_info *info;

                for (bus = 0; bus < AAC_MAX_BUSES; bus++) {
                        for (cid = 0; cid < AAC_MAX_TARGETS; cid++) {
                                info = &aac->hba_map[bus][cid];
                                if (info->devtype == AAC_DEVTYPE_NATIVE_RAW)
                                        info->reset_state = 0;
                        }
                }
        }
        return ret;
}

/**
 *      aac_cfg_open            -       open a configuration file
 *      @inode: inode being opened
 *      @file: file handle attached
 *
 *      Called when the configuration device is opened. Does the needed
 *      set up on the handle and then returns
 *
 *      Bugs: This needs extending to check a given adapter is present
 *      so we can support hot plugging, and to ref count adapters.
 */

static int aac_cfg_open(struct inode *inode, struct file *file)
{
        struct aac_dev *aac;
        unsigned minor_number = iminor(inode);
        int err = -ENODEV;

        mutex_lock(&aac_mutex);  /* BKL pushdown: nothing else protects this list */
        list_for_each_entry(aac, &aac_devices, entry) {
                if (aac->id == minor_number) {
                        file->private_data = aac;
                        err = 0;
                        break;
                }
        }
        mutex_unlock(&aac_mutex);

        return err;
}

/**
 *      aac_cfg_ioctl           -       AAC configuration request
 *      @file: file handle
 *      @cmd: ioctl command code
 *      @arg: argument
 *
 *      Handles a configuration ioctl. Currently this involves wrapping it
 *      up and feeding it into the nasty windowsalike glue layer.
 *
 *      Bugs: Needs locking against parallel ioctls lower down
 *      Bugs: Needs to handle hot plugging
 */

static long aac_cfg_ioctl(struct file *file,
                unsigned int cmd, unsigned long arg)
{
        struct aac_dev *aac = (struct aac_dev *)file->private_data;

        if (!capable(CAP_SYS_RAWIO))
                return -EPERM;

        return aac_do_ioctl(aac, cmd, (void __user *)arg);
}

static ssize_t aac_show_model(struct device *device,
                              struct device_attribute *attr, char *buf)
{
        struct aac_dev *dev = (struct aac_dev*)class_to_shost(device)->hostdata;
        int len;

        if (dev->supplement_adapter_info.adapter_type_text[0]) {
                char *cp = dev->supplement_adapter_info.adapter_type_text;
                while (*cp && *cp != ' ')
                        ++cp;
                while (*cp == ' ')
                        ++cp;
                len = snprintf(buf, PAGE_SIZE, "%s\n", cp);
        } else
                len = snprintf(buf, PAGE_SIZE, "%s\n",
                  aac_drivers[dev->cardtype].model);
        return len;
}

static ssize_t aac_show_vendor(struct device *device,
                               struct device_attribute *attr, char *buf)
{
        struct aac_dev *dev = (struct aac_dev*)class_to_shost(device)->hostdata;
        struct aac_supplement_adapter_info *sup_adap_info;
        int len;

        sup_adap_info = &dev->supplement_adapter_info;
        if (sup_adap_info->adapter_type_text[0]) {
                char *cp = sup_adap_info->adapter_type_text;
                while (*cp && *cp != ' ')
                        ++cp;
                len = snprintf(buf, PAGE_SIZE, "%.*s\n",
                        (int)(cp - (char *)sup_adap_info->adapter_type_text),
                                        sup_adap_info->adapter_type_text);
        } else
                len = snprintf(buf, PAGE_SIZE, "%s\n",
                        aac_drivers[dev->cardtype].vname);
        return len;
}

static ssize_t aac_show_flags(struct device *cdev,
                              struct device_attribute *attr, char *buf)
{
        int len = 0;
        struct aac_dev *dev = (struct aac_dev*)class_to_shost(cdev)->hostdata;

        if (nblank(dprintk(x)))
                len = snprintf(buf, PAGE_SIZE, "dprintk\n");
#ifdef AAC_DETAILED_STATUS_INFO
        len += scnprintf(buf + len, PAGE_SIZE - len,
                         "AAC_DETAILED_STATUS_INFO\n");
#endif
        if (dev->raw_io_interface && dev->raw_io_64)
                len += scnprintf(buf + len, PAGE_SIZE - len,
                                 "SAI_READ_CAPACITY_16\n");
        if (dev->jbod)
                len += scnprintf(buf + len, PAGE_SIZE - len,
                                 "SUPPORTED_JBOD\n");
        if (dev->supplement_adapter_info.supported_options2 &
                AAC_OPTION_POWER_MANAGEMENT)
                len += scnprintf(buf + len, PAGE_SIZE - len,
                                 "SUPPORTED_POWER_MANAGEMENT\n");
        if (dev->msi)
                len += scnprintf(buf + len, PAGE_SIZE - len, "PCI_HAS_MSI\n");
        return len;
}

static ssize_t aac_show_kernel_version(struct device *device,
                                       struct device_attribute *attr,
                                       char *buf)
{
        struct aac_dev *dev = (struct aac_dev*)class_to_shost(device)->hostdata;
        int len, tmp;

        tmp = le32_to_cpu(dev->adapter_info.kernelrev);
        len = snprintf(buf, PAGE_SIZE, "%d.%d-%d[%d]\n",
          tmp >> 24, (tmp >> 16) & 0xff, tmp & 0xff,
          le32_to_cpu(dev->adapter_info.kernelbuild));
        return len;
}

static ssize_t aac_show_monitor_version(struct device *device,
                                        struct device_attribute *attr,
                                        char *buf)
{
        struct aac_dev *dev = (struct aac_dev*)class_to_shost(device)->hostdata;
        int len, tmp;

        tmp = le32_to_cpu(dev->adapter_info.monitorrev);
        len = snprintf(buf, PAGE_SIZE, "%d.%d-%d[%d]\n",
          tmp >> 24, (tmp >> 16) & 0xff, tmp & 0xff,
          le32_to_cpu(dev->adapter_info.monitorbuild));
        return len;
}

static ssize_t aac_show_bios_version(struct device *device,
                                     struct device_attribute *attr,
                                     char *buf)
{
        struct aac_dev *dev = (struct aac_dev*)class_to_shost(device)->hostdata;
        int len, tmp;

        tmp = le32_to_cpu(dev->adapter_info.biosrev);
        len = snprintf(buf, PAGE_SIZE, "%d.%d-%d[%d]\n",
          tmp >> 24, (tmp >> 16) & 0xff, tmp & 0xff,
          le32_to_cpu(dev->adapter_info.biosbuild));
        return len;
}

static ssize_t aac_show_driver_version(struct device *device,
                                        struct device_attribute *attr,
                                        char *buf)
{
        return snprintf(buf, PAGE_SIZE, "%s\n", aac_driver_version);
}

static ssize_t aac_show_serial_number(struct device *device,
                               struct device_attribute *attr, char *buf)
{
        struct aac_dev *dev = (struct aac_dev*)class_to_shost(device)->hostdata;
        int len = 0;

        if (le32_to_cpu(dev->adapter_info.serial[0]) != 0xBAD0)
                len = snprintf(buf, 16, "%06X\n",
                  le32_to_cpu(dev->adapter_info.serial[0]));
        if (len &&
          !memcmp(&dev->supplement_adapter_info.mfg_pcba_serial_no[
            sizeof(dev->supplement_adapter_info.mfg_pcba_serial_no)-len],
          buf, len-1))
                len = snprintf(buf, 16, "%.*s\n",
                  (int)sizeof(dev->supplement_adapter_info.mfg_pcba_serial_no),
                  dev->supplement_adapter_info.mfg_pcba_serial_no);

        return min(len, 16);
}

static ssize_t aac_show_max_channel(struct device *device,
                                    struct device_attribute *attr, char *buf)
{
        return snprintf(buf, PAGE_SIZE, "%d\n",
          class_to_shost(device)->max_channel);
}

static ssize_t aac_show_max_id(struct device *device,
                               struct device_attribute *attr, char *buf)
{
        return snprintf(buf, PAGE_SIZE, "%d\n",
          class_to_shost(device)->max_id);
}

static ssize_t aac_store_reset_adapter(struct device *device,
                                       struct device_attribute *attr,
                                       const char *buf, size_t count)
{
        int retval = -EACCES;

        if (!capable(CAP_SYS_ADMIN))
                return retval;

        retval = aac_reset_adapter(shost_priv(class_to_shost(device)),
                                        buf[0] == '!', IOP_HWSOFT_RESET);
        if (retval >= 0)
                retval = count;

        return retval;
}

static ssize_t aac_show_reset_adapter(struct device *device,
                                      struct device_attribute *attr,
                                      char *buf)
{
        struct aac_dev *dev = (struct aac_dev*)class_to_shost(device)->hostdata;
        int len, tmp;

        tmp = aac_adapter_check_health(dev);
        if ((tmp == 0) && dev->in_reset)
                tmp = -EBUSY;
        len = snprintf(buf, PAGE_SIZE, "0x%x\n", tmp);
        return len;
}

static struct device_attribute aac_model = {
        .attr = {
                .name = "model",
                .mode = S_IRUGO,
        },
        .show = aac_show_model,
};
static struct device_attribute aac_vendor = {
        .attr = {
                .name = "vendor",
                .mode = S_IRUGO,
        },
        .show = aac_show_vendor,
};
static struct device_attribute aac_flags = {
        .attr = {
                .name = "flags",
                .mode = S_IRUGO,
        },
        .show = aac_show_flags,
};
static struct device_attribute aac_kernel_version = {
        .attr = {
                .name = "hba_kernel_version",
                .mode = S_IRUGO,
        },
        .show = aac_show_kernel_version,
};
static struct device_attribute aac_monitor_version = {
        .attr = {
                .name = "hba_monitor_version",
                .mode = S_IRUGO,
        },
        .show = aac_show_monitor_version,
};
static struct device_attribute aac_bios_version = {
        .attr = {
                .name = "hba_bios_version",
                .mode = S_IRUGO,
        },
        .show = aac_show_bios_version,
};
static struct device_attribute aac_lld_version = {
        .attr = {
                .name = "driver_version",
                .mode = 0444,
        },
        .show = aac_show_driver_version,
};
static struct device_attribute aac_serial_number = {
        .attr = {
                .name = "serial_number",
                .mode = S_IRUGO,
        },
        .show = aac_show_serial_number,
};
static struct device_attribute aac_max_channel = {
        .attr = {
                .name = "max_channel",
                .mode = S_IRUGO,
        },
        .show = aac_show_max_channel,
};
static struct device_attribute aac_max_id = {
        .attr = {
                .name = "max_id",
                .mode = S_IRUGO,
        },
        .show = aac_show_max_id,
};
static struct device_attribute aac_reset = {
        .attr = {
                .name = "reset_host",
                .mode = S_IWUSR|S_IRUGO,
        },
        .store = aac_store_reset_adapter,
        .show = aac_show_reset_adapter,
};

static struct device_attribute *aac_attrs[] = {
        &aac_model,
        &aac_vendor,
        &aac_flags,
        &aac_kernel_version,
        &aac_monitor_version,
        &aac_bios_version,
        &aac_lld_version,
        &aac_serial_number,
        &aac_max_channel,
        &aac_max_id,
        &aac_reset,
        NULL
};

ssize_t aac_get_serial_number(struct device *device, char *buf)
{
        return aac_show_serial_number(device, &aac_serial_number, buf);
}

static const struct file_operations aac_cfg_fops = {
        .owner          = THIS_MODULE,
        .unlocked_ioctl = aac_cfg_ioctl,
#ifdef CONFIG_COMPAT
        .compat_ioctl   = aac_cfg_ioctl,
#endif
        .open           = aac_cfg_open,
        .llseek         = noop_llseek,
};

static struct scsi_host_template aac_driver_template = {
        .module                         = THIS_MODULE,
        .name                           = "AAC",
        .proc_name                      = AAC_DRIVERNAME,
        .info                           = aac_info,
        .ioctl                          = aac_ioctl,
#ifdef CONFIG_COMPAT
        .compat_ioctl                   = aac_ioctl,
#endif
        .queuecommand                   = aac_queuecommand,
        .bios_param                     = aac_biosparm,
        .shost_attrs                    = aac_attrs,
        .slave_configure                = aac_slave_configure,
        .change_queue_depth             = aac_change_queue_depth,
        .sdev_attrs                     = aac_dev_attrs,
        .eh_abort_handler               = aac_eh_abort,
        .eh_device_reset_handler        = aac_eh_dev_reset,
        .eh_target_reset_handler        = aac_eh_target_reset,
        .eh_bus_reset_handler           = aac_eh_bus_reset,
        .eh_host_reset_handler          = aac_eh_host_reset,
        .can_queue                      = AAC_NUM_IO_FIB,
        .this_id                        = MAXIMUM_NUM_CONTAINERS,
        .sg_tablesize                   = 16,
        .max_sectors                    = 128,
#if (AAC_NUM_IO_FIB > 256)
        .cmd_per_lun                    = 256,
#else
        .cmd_per_lun                    = AAC_NUM_IO_FIB,
#endif
        .emulated                       = 1,
        .no_write_same                  = 1,
};

static void __aac_shutdown(struct aac_dev * aac)
{
        int i;

        mutex_lock(&aac->ioctl_mutex);
        aac->adapter_shutdown = 1;
        mutex_unlock(&aac->ioctl_mutex);

        if (aac->aif_thread) {
                int i;
                /* Clear out events first */
                for (i = 0; i < (aac->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB); i++) {
                        struct fib *fib = &aac->fibs[i];
                        if (!(fib->hw_fib_va->header.XferState & cpu_to_le32(NoResponseExpected | Async)) &&
                            (fib->hw_fib_va->header.XferState & cpu_to_le32(ResponseExpected)))
                                complete(&fib->event_wait);
                }
                kthread_stop(aac->thread);
                aac->thread = NULL;
        }

        aac_send_shutdown(aac);

        aac_adapter_disable_int(aac);

        if (aac_is_src(aac)) {
                if (aac->max_msix > 1) {
                        for (i = 0; i < aac->max_msix; i++) {
                                free_irq(pci_irq_vector(aac->pdev, i),
                                         &(aac->aac_msix[i]));
                        }
                } else {
                        free_irq(aac->pdev->irq,
                                 &(aac->aac_msix[0]));
                }
        } else {
                free_irq(aac->pdev->irq, aac);
        }
        if (aac->msi)
                pci_disable_msi(aac->pdev);
        else if (aac->max_msix > 1)
                pci_disable_msix(aac->pdev);
}
static void aac_init_char(void)
{
        aac_cfg_major = register_chrdev(0, "aac", &aac_cfg_fops);
        if (aac_cfg_major < 0) {
                pr_err("aacraid: unable to register \"aac\" device.\n");
        }
}

void aac_reinit_aif(struct aac_dev *aac, unsigned int index)
{
        /*
         * Firmware may send a AIF messages very early and the Driver may have
         * ignored as it is not fully ready to process the messages. Send
         * AIF to firmware so that if there are any unprocessed events they
         * can be processed now.
         */
        if (aac_drivers[index].quirks & AAC_QUIRK_SRC)
                aac_intr_normal(aac, 0, 2, 0, NULL);

}

static int aac_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
{
        unsigned index = id->driver_data;
        struct Scsi_Host *shost;
        struct aac_dev *aac;
        struct list_head *insert = &aac_devices;
        int error;
        int unique_id = 0;
        u64 dmamask;
        int mask_bits = 0;
        extern int aac_sync_mode;

        /*
         * Only series 7 needs freset.
         */
        if (pdev->device == PMC_DEVICE_S7)
                pdev->needs_freset = 1;

        list_for_each_entry(aac, &aac_devices, entry) {
                if (aac->id > unique_id)
                        break;
                insert = &aac->entry;
                unique_id++;
        }

        pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 |
                               PCIE_LINK_STATE_CLKPM);

        error = pci_enable_device(pdev);
        if (error)
                goto out;

        if (!(aac_drivers[index].quirks & AAC_QUIRK_SRC)) {
                error = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
                if (error) {
                        dev_err(&pdev->dev, "PCI 32 BIT dma mask set failed");
                        goto out_disable_pdev;
                }
        }

        /*
         * If the quirk31 bit is set, the adapter needs adapter
         * to driver communication memory to be allocated below 2gig
         */
        if (aac_drivers[index].quirks & AAC_QUIRK_31BIT) {
                dmamask = DMA_BIT_MASK(31);
                mask_bits = 31;
        } else {
                dmamask = DMA_BIT_MASK(32);
                mask_bits = 32;
        }

        error = dma_set_coherent_mask(&pdev->dev, dmamask);
        if (error) {
                dev_err(&pdev->dev, "PCI %d B consistent dma mask set failed\n"
                                , mask_bits);
                goto out_disable_pdev;
        }

        pci_set_master(pdev);

        shost = scsi_host_alloc(&aac_driver_template, sizeof(struct aac_dev));
        if (!shost) {
                error = -ENOMEM;
                goto out_disable_pdev;
        }

        shost->irq = pdev->irq;
        shost->unique_id = unique_id;
        shost->max_cmd_len = 16;

        if (aac_cfg_major == AAC_CHARDEV_NEEDS_REINIT)
                aac_init_char();

        aac = (struct aac_dev *)shost->hostdata;
        aac->base_start = pci_resource_start(pdev, 0);
        aac->scsi_host_ptr = shost;
        aac->pdev = pdev;
        aac->name = aac_driver_template.name;
        aac->id = shost->unique_id;
        aac->cardtype = index;
        INIT_LIST_HEAD(&aac->entry);

        if (aac_reset_devices || reset_devices)
                aac->init_reset = true;

        aac->fibs = kcalloc(shost->can_queue + AAC_NUM_MGT_FIB,
                            sizeof(struct fib),
                            GFP_KERNEL);
        if (!aac->fibs) {
                error = -ENOMEM;
                goto out_free_host;
        }

        spin_lock_init(&aac->fib_lock);

        mutex_init(&aac->ioctl_mutex);
        mutex_init(&aac->scan_mutex);

        INIT_DELAYED_WORK(&aac->safw_rescan_work, aac_safw_rescan_worker);
        INIT_DELAYED_WORK(&aac->src_reinit_aif_worker,
                                aac_src_reinit_aif_worker);
        /*
         *      Map in the registers from the adapter.
         */
        aac->base_size = AAC_MIN_FOOTPRINT_SIZE;
        if ((*aac_drivers[index].init)(aac)) {
                error = -ENODEV;
                goto out_unmap;
        }

        if (aac->sync_mode) {
                if (aac_sync_mode)
                        printk(KERN_INFO "%s%d: Sync. mode enforced "
                                "by driver parameter. This will cause "
                                "a significant performance decrease!\n",
                                aac->name,
                                aac->id);
                else
                        printk(KERN_INFO "%s%d: Async. mode not supported "
                                "by current driver, sync. mode enforced."
                                "\nPlease update driver to get full performance.\n",
                                aac->name,
                                aac->id);
        }

        /*
         *      Start any kernel threads needed
         */
        aac->thread = kthread_run(aac_command_thread, aac, AAC_DRIVERNAME);
        if (IS_ERR(aac->thread)) {
                printk(KERN_ERR "aacraid: Unable to create command thread.\n");
                error = PTR_ERR(aac->thread);
                aac->thread = NULL;
                goto out_deinit;
        }

        aac->maximum_num_channels = aac_drivers[index].channels;
        error = aac_get_adapter_info(aac);
        if (error < 0)
                goto out_deinit;

        /*
         * Lets override negotiations and drop the maximum SG limit to 34
         */
        if ((aac_drivers[index].quirks & AAC_QUIRK_34SG) &&
                        (shost->sg_tablesize > 34)) {
                shost->sg_tablesize = 34;
                shost->max_sectors = (shost->sg_tablesize * 8) + 112;
        }

        if ((aac_drivers[index].quirks & AAC_QUIRK_17SG) &&
                        (shost->sg_tablesize > 17)) {
                shost->sg_tablesize = 17;
                shost->max_sectors = (shost->sg_tablesize * 8) + 112;
        }

        if (aac->adapter_info.options & AAC_OPT_NEW_COMM)
                shost->max_segment_size = shost->max_sectors << 9;
        else
                shost->max_segment_size = 65536;

        /*
         * Firmware printf works only with older firmware.
         */
        if (aac_drivers[index].quirks & AAC_QUIRK_34SG)
                aac->printf_enabled = 1;
        else
                aac->printf_enabled = 0;

        /*
         * max channel will be the physical channels plus 1 virtual channel
         * all containers are on the virtual channel 0 (CONTAINER_CHANNEL)
         * physical channels are address by their actual physical number+1
         */
        if (aac->nondasd_support || expose_physicals || aac->jbod)
                shost->max_channel = aac->maximum_num_channels;
        else
                shost->max_channel = 0;

        aac_get_config_status(aac, 0);
        aac_get_containers(aac);
        list_add(&aac->entry, insert);

        shost->max_id = aac->maximum_num_containers;
        if (shost->max_id < aac->maximum_num_physicals)
                shost->max_id = aac->maximum_num_physicals;
        if (shost->max_id < MAXIMUM_NUM_CONTAINERS)
                shost->max_id = MAXIMUM_NUM_CONTAINERS;
        else
                shost->this_id = shost->max_id;

        if (!aac->sa_firmware && aac_drivers[index].quirks & AAC_QUIRK_SRC)
                aac_intr_normal(aac, 0, 2, 0, NULL);

        /*
         * dmb - we may need to move the setting of these parms somewhere else once
         * we get a fib that can report the actual numbers
         */
        shost->max_lun = AAC_MAX_LUN;

        pci_set_drvdata(pdev, shost);

        error = scsi_add_host(shost, &pdev->dev);
        if (error)
                goto out_deinit;

        aac_scan_host(aac);

        pci_enable_pcie_error_reporting(pdev);
        pci_save_state(pdev);

        return 0;

 out_deinit:
        __aac_shutdown(aac);
 out_unmap:
        aac_fib_map_free(aac);
        if (aac->comm_addr)
                dma_free_coherent(&aac->pdev->dev, aac->comm_size,
                                  aac->comm_addr, aac->comm_phys);
        kfree(aac->queues);
        aac_adapter_ioremap(aac, 0);
        kfree(aac->fibs);
        kfree(aac->fsa_dev);
 out_free_host:
        scsi_host_put(shost);
 out_disable_pdev:
        pci_disable_device(pdev);
 out:
        return error;
}

static void aac_release_resources(struct aac_dev *aac)
{
        aac_adapter_disable_int(aac);
        aac_free_irq(aac);
}

static int aac_acquire_resources(struct aac_dev *dev)
{
        unsigned long status;
        /*
         *      First clear out all interrupts.  Then enable the one's that we
         *      can handle.
         */
        while (!((status = src_readl(dev, MUnit.OMR)) & KERNEL_UP_AND_RUNNING)
                || status == 0xffffffff)
                        msleep(20);

        aac_adapter_disable_int(dev);
        aac_adapter_enable_int(dev);


        if (aac_is_src(dev))
                aac_define_int_mode(dev);

        if (dev->msi_enabled)
                aac_src_access_devreg(dev, AAC_ENABLE_MSIX);

        if (aac_acquire_irq(dev))
                goto error_iounmap;

        aac_adapter_enable_int(dev);

        /*max msix may change  after EEH
         * Re-assign vectors to fibs
         */
        aac_fib_vector_assign(dev);

        if (!dev->sync_mode) {
                /* After EEH recovery or suspend resume, max_msix count
                 * may change, therefore updating in init as well.
                 */
                dev->init->r7.no_of_msix_vectors = cpu_to_le32(dev->max_msix);
                aac_adapter_start(dev);
        }
        return 0;

error_iounmap:
        return -1;

}

static int __maybe_unused aac_suspend(struct device *dev)
{
        struct Scsi_Host *shost = dev_get_drvdata(dev);
        struct aac_dev *aac = (struct aac_dev *)shost->hostdata;

        scsi_host_block(shost);
        aac_cancel_rescan_worker(aac);
        aac_send_shutdown(aac);

        aac_release_resources(aac);

        return 0;
}

static int __maybe_unused aac_resume(struct device *dev)
{
        struct Scsi_Host *shost = dev_get_drvdata(dev);
        struct aac_dev *aac = (struct aac_dev *)shost->hostdata;

        if (aac_acquire_resources(aac))
                goto fail_device;
        /*
        * reset this flag to unblock ioctl() as it was set at
        * aac_send_shutdown() to block ioctls from upperlayer
        */
        aac->adapter_shutdown = 0;
        scsi_host_unblock(shost, SDEV_RUNNING);

        return 0;

fail_device:
        printk(KERN_INFO "%s%d: resume failed.\n", aac->name, aac->id);
        scsi_host_put(shost);
        return -ENODEV;
}

static void aac_shutdown(struct pci_dev *dev)
{
        struct Scsi_Host *shost = pci_get_drvdata(dev);

        scsi_host_block(shost);
        __aac_shutdown((struct aac_dev *)shost->hostdata);
}

static void aac_remove_one(struct pci_dev *pdev)
{
        struct Scsi_Host *shost = pci_get_drvdata(pdev);
        struct aac_dev *aac = (struct aac_dev *)shost->hostdata;

        aac_cancel_rescan_worker(aac);
        scsi_remove_host(shost);

        __aac_shutdown(aac);
        aac_fib_map_free(aac);
        dma_free_coherent(&aac->pdev->dev, aac->comm_size, aac->comm_addr,
                          aac->comm_phys);
        kfree(aac->queues);

        aac_adapter_ioremap(aac, 0);

        kfree(aac->fibs);
        kfree(aac->fsa_dev);

        list_del(&aac->entry);
        scsi_host_put(shost);
        pci_disable_device(pdev);
        if (list_empty(&aac_devices)) {
                unregister_chrdev(aac_cfg_major, "aac");
                aac_cfg_major = AAC_CHARDEV_NEEDS_REINIT;
        }
}

static pci_ers_result_t aac_pci_error_detected(struct pci_dev *pdev,
                                        pci_channel_state_t error)
{
        struct Scsi_Host *shost = pci_get_drvdata(pdev);
        struct aac_dev *aac = shost_priv(shost);

        dev_err(&pdev->dev, "aacraid: PCI error detected %x\n", error);

        switch (error) {
        case pci_channel_io_normal:
                return PCI_ERS_RESULT_CAN_RECOVER;
        case pci_channel_io_frozen:
                aac->handle_pci_error = 1;

                scsi_host_block(shost);
                aac_cancel_rescan_worker(aac);
                scsi_host_complete_all_commands(shost, DID_NO_CONNECT);
                aac_release_resources(aac);

                pci_disable_pcie_error_reporting(pdev);
                aac_adapter_ioremap(aac, 0);

                return PCI_ERS_RESULT_NEED_RESET;
        case pci_channel_io_perm_failure:
                aac->handle_pci_error = 1;

                scsi_host_complete_all_commands(shost, DID_NO_CONNECT);
                return PCI_ERS_RESULT_DISCONNECT;
        }

        return PCI_ERS_RESULT_NEED_RESET;
}

static pci_ers_result_t aac_pci_mmio_enabled(struct pci_dev *pdev)
{
        dev_err(&pdev->dev, "aacraid: PCI error - mmio enabled\n");
        return PCI_ERS_RESULT_NEED_RESET;
}

static pci_ers_result_t aac_pci_slot_reset(struct pci_dev *pdev)
{
        dev_err(&pdev->dev, "aacraid: PCI error - slot reset\n");
        pci_restore_state(pdev);
        if (pci_enable_device(pdev)) {
                dev_warn(&pdev->dev,
                        "aacraid: failed to enable slave\n");
                goto fail_device;
        }

        pci_set_master(pdev);

        if (pci_enable_device_mem(pdev)) {
                dev_err(&pdev->dev, "pci_enable_device_mem failed\n");
                goto fail_device;
        }

        return PCI_ERS_RESULT_RECOVERED;

fail_device:
        dev_err(&pdev->dev, "aacraid: PCI error - slot reset failed\n");
        return PCI_ERS_RESULT_DISCONNECT;
}


static void aac_pci_resume(struct pci_dev *pdev)
{
        struct Scsi_Host *shost = pci_get_drvdata(pdev);
        struct aac_dev *aac = (struct aac_dev *)shost_priv(shost);

        if (aac_adapter_ioremap(aac, aac->base_size)) {

                dev_err(&pdev->dev, "aacraid: ioremap failed\n");
                /* remap failed, go back ... */

                aac->comm_interface = AAC_COMM_PRODUCER;
                if (aac_adapter_ioremap(aac, AAC_MIN_FOOTPRINT_SIZE)) {
                        dev_warn(&pdev->dev,
                                "aacraid: unable to map adapter.\n");

                        return;
                }
        }

        msleep(10000);

        aac_acquire_resources(aac);

        /*
         * reset this flag to unblock ioctl() as it was set
         * at aac_send_shutdown() to block ioctls from upperlayer
         */
        aac->adapter_shutdown = 0;
        aac->handle_pci_error = 0;

        scsi_host_unblock(shost, SDEV_RUNNING);
        aac_scan_host(aac);
        pci_save_state(pdev);

        dev_err(&pdev->dev, "aacraid: PCI error - resume\n");
}

static struct pci_error_handlers aac_pci_err_handler = {
        .error_detected         = aac_pci_error_detected,
        .mmio_enabled           = aac_pci_mmio_enabled,
        .slot_reset             = aac_pci_slot_reset,
        .resume                 = aac_pci_resume,
};

static SIMPLE_DEV_PM_OPS(aac_pm_ops, aac_suspend, aac_resume);

static struct pci_driver aac_pci_driver = {
        .name           = AAC_DRIVERNAME,
        .id_table       = aac_pci_tbl,
        .probe          = aac_probe_one,
        .remove         = aac_remove_one,
        .driver.pm      = &aac_pm_ops,
        .shutdown       = aac_shutdown,
        .err_handler    = &aac_pci_err_handler,
};

static int __init aac_init(void)
{
        int error;

        printk(KERN_INFO "Adaptec %s driver %s\n",
          AAC_DRIVERNAME, aac_driver_version);

        error = pci_register_driver(&aac_pci_driver);
        if (error < 0)
                return error;

        aac_init_char();


        return 0;
}

static void __exit aac_exit(void)
{
        if (aac_cfg_major > -1)
                unregister_chrdev(aac_cfg_major, "aac");
        pci_unregister_driver(&aac_pci_driver);
}

module_init(aac_init);
module_exit(aac_exit);