[SCSI] aacraid: prevent panic on adapter resource failure
[safe/jmp/linux-2.6] / drivers / scsi / aacraid / linit.c
index 2716178..a7f42a1 100644 (file)
@@ -5,7 +5,7 @@
  * based on the old aacraid driver that is..
  * Adaptec aacraid device driver for Linux.
  *
- * Copyright (c) 2000 Adaptec, Inc. (aacraid@adaptec.com)
+ * Copyright (c) 2000-2007 Adaptec, Inc. (aacraid@adaptec.com)
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * Abstract: Linux Driver entry module for Adaptec RAID Array Controller
  */
 
-#define AAC_DRIVER_VERSION             "1.1-4"
-#ifndef AAC_DRIVER_BRANCH
-#define AAC_DRIVER_BRANCH              ""
-#endif
-#define AAC_DRIVER_BUILD_DATE          __DATE__ " " __TIME__
-#define AAC_DRIVERNAME                 "aacraid"
 
 #include <linux/compat.h>
 #include <linux/blkdev.h>
@@ -47,7 +41,7 @@
 #include <linux/spinlock.h>
 #include <linux/syscalls.h>
 #include <linux/delay.h>
-#include <linux/smp_lock.h>
+#include <linux/kthread.h>
 #include <asm/semaphore.h>
 
 #include <scsi/scsi.h>
 
 #include "aacraid.h"
 
+#define AAC_DRIVER_VERSION             "1.1-5"
+#ifndef AAC_DRIVER_BRANCH
+#define AAC_DRIVER_BRANCH              ""
+#endif
+#define AAC_DRIVER_BUILD_DATE          __DATE__ " " __TIME__
+#define AAC_DRIVERNAME                 "aacraid"
+
 #ifdef AAC_DRIVER_BUILD
 #define _str(x) #x
 #define str(x) _str(x)
@@ -71,7 +72,7 @@
 MODULE_AUTHOR("Red Hat Inc and Adaptec");
 MODULE_DESCRIPTION("Dell PERC2, 2/Si, 3/Si, 3/Di, "
                   "Adaptec Advanced Raid Products, "
-                  "and HP NetRAID-4M SCSI driver");
+                  "HP NetRAID-4M, IBM ServeRAID & ICP SCSI driver");
 MODULE_LICENSE("GPL");
 MODULE_VERSION(AAC_DRIVER_FULL_VERSION);
 
@@ -112,11 +113,11 @@ static struct pci_device_id aac_pci_tbl[] = {
        { 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 }, /* ICP9024R0 (Lancer) */
-       { 0x9005, 0x0286, 0x9005, 0x029f, 0, 0, 26 }, /* ICP9014R0 (Lancer) */
+       { 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 }, /* ICP5085AU (Hurricane) */
+       { 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) */
@@ -132,15 +133,15 @@ static struct pci_device_id aac_pci_tbl[] = {
        { 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-4005SAS */
+       { 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-4000SAS (BlackBird) */
+       { 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-4810SAS (Hurricane */
+       { 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)*/
@@ -152,6 +153,7 @@ static struct pci_device_id aac_pci_tbl[] = {
        { 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 */
        { 0,}
 };
 MODULE_DEVICE_TABLE(pci, aac_pci_tbl);
@@ -188,11 +190,11 @@ static struct aac_driver_ident aac_drivers[] = {
        { 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     ", "ICP9024R0       ", 2 }, /* ICP9024R0 (Lancer) */
-       { aac_rkt_init, "aacraid",  "ICP     ", "ICP9014R0       ", 1 }, /* ICP9014R0 (Lancer) */
+       { 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     ", "ICP5085AU       ", 1 }, /* ICP5085AU (Hurricane) */
+       { 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) */
@@ -207,25 +209,26 @@ static struct aac_driver_ident aac_drivers[] = {
        { 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-4005SAS     ", 1 }, /* ASR-4005SAS */
+       { 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-4000SAS     ", 1 }, /* ASR-4000SAS (BlackBird & AvonPark) */
+       { 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-4810SAS     ", 1 }, /* ASR-4810SAS (Hurricane) */
+       { 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_31BIT | AAC_QUIRK_34SG }, /* Dell PERC2/QC */
+       { 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 }, /* Dell Catchall */
        { aac_rx_init, "aacraid",  "Legend  ", "RAID            ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG }, /* Legend Catchall */
-       { aac_rx_init, "aacraid",  "ADAPTEC ", "RAID            ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG }, /* Adaptec Catch All */
-       { aac_rkt_init, "aacraid", "ADAPTEC ", "RAID            ", 2 } /* Adaptec Rocket Catch All */
+       { 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 */
 };
 
 /**
@@ -240,7 +243,20 @@ static struct aac_driver_ident aac_drivers[] = {
 
 static int aac_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 {
+       struct Scsi_Host *host = cmd->device->host;
+       struct aac_dev *dev = (struct aac_dev *)host->hostdata;
+       u32 count = 0;
        cmd->scsi_done = done;
+       for (; count < (host->can_queue + AAC_NUM_MGT_FIB); ++count) {
+               struct fib * fib = &dev->fibs[count];
+               struct scsi_cmnd * command;
+               if (fib->hw_fib_va->header.XferState &&
+                   ((command = fib->callback_data)) &&
+                   (command == cmd) &&
+                   (cmd->SCp.phase == AAC_OWNER_FIRMWARE))
+                       return 0; /* Already owned by Adapter */
+       }
+       cmd->SCp.phase = AAC_OWNER_LOWLEVEL;
        return (aac_scsi_cmd(cmd) ? FAILED : 0);
 } 
 
@@ -385,15 +401,16 @@ static int aac_biosparm(struct scsi_device *sdev, struct block_device *bdev,
 
 static int aac_slave_configure(struct scsi_device *sdev)
 {
-       if (sdev_channel(sdev) == CONTAINER_CHANNEL) {
-               sdev->skip_ms_page_8 = 1;
-               sdev->skip_ms_page_3f = 1;
-       }
        if ((sdev->type == TYPE_DISK) &&
                        (sdev_channel(sdev) != CONTAINER_CHANNEL)) {
-               struct aac_dev *aac = (struct aac_dev *)sdev->host->hostdata;
-               if (!aac->raid_scsi_mode || (sdev_channel(sdev) != 2))
-                       sdev->no_uld_attach = 1;
+               if (expose_physicals == 0)
+                       return -ENXIO;
+               if (expose_physicals < 0) {
+                       struct aac_dev *aac =
+                               (struct aac_dev *)sdev->host->hostdata;
+                       if (!aac->raid_scsi_mode || (sdev_channel(sdev) != 2))
+                               sdev->no_uld_attach = 1;
+               }
        }
        if (sdev->tagged_supported && (sdev->type == TYPE_DISK) &&
                        (sdev_channel(sdev) == CONTAINER_CHANNEL)) {
@@ -427,12 +444,83 @@ static int aac_slave_configure(struct scsi_device *sdev)
        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)
+{
+       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;
+               scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, depth);
+       } else
+               scsi_adjust_queue_depth(sdev, 0, 1);
+       return sdev->queue_depth;
+}
+
 static int aac_ioctl(struct scsi_device *sdev, int cmd, void __user * arg)
 {
        struct aac_dev *dev = (struct aac_dev *)sdev->host->hostdata;
        return aac_do_ioctl(dev, cmd, arg);
 }
 
+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;
+       int ret = FAILED;
+
+       printk(KERN_ERR "%s: Host adapter abort request (%d,%d,%d,%d)\n",
+               AAC_DRIVERNAME,
+               host->host_no, sdev_channel(dev), sdev_id(dev), dev->lun);
+       switch (cmd->cmnd[0]) {
+       case SERVICE_ACTION_IN:
+               if (!(aac->raw_io_interface) ||
+                   !(aac->raw_io_64) ||
+                   ((cmd->cmnd[1] & 0x1f) != SAI_READ_CAPACITY_16))
+                       break;
+       case INQUIRY:
+       case READ_CAPACITY:
+       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 fib * fib = &aac->fibs[count];
+                       if (fib->hw_fib_va->header.XferState &&
+                         (fib->callback_data == cmd)) {
+                               fib->flags |= FIB_CONTEXT_FLAG_TIMED_OUT;
+                               cmd->SCp.phase = AAC_OWNER_ERROR_HANDLER;
+                               ret = SUCCESS;
+                       }
+               }
+       }
+       return ret;
+}
+
 /*
  *     aac_eh_reset    - Reset command handling
  *     @scsi_cmd:      SCSI command block causing the reset
@@ -444,32 +532,36 @@ static int aac_eh_reset(struct scsi_cmnd* cmd)
        struct Scsi_Host * host = dev->host;
        struct scsi_cmnd * command;
        int count;
-       struct aac_dev * aac;
+       struct aac_dev * aac = (struct aac_dev *)host->hostdata;
        unsigned long flags;
 
+       /* Mark the 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->callback_data == cmd)) {
+                       fib->flags |= FIB_CONTEXT_FLAG_TIMED_OUT;
+                       cmd->SCp.phase = AAC_OWNER_ERROR_HANDLER;
+               }
+       }
        printk(KERN_ERR "%s: Host adapter reset request. SCSI hang ?\n", 
                                        AAC_DRIVERNAME);
 
-
-       spin_lock_irq(host->host_lock);
-
-       aac = (struct aac_dev *)host->hostdata;
-       if (aac_adapter_check_health(aac)) {
-               printk(KERN_ERR "%s: Host adapter appears dead\n", 
-                               AAC_DRIVERNAME);
-               spin_unlock_irq(host->host_lock);
-               return -ENODEV;
-       }
+       if ((count = aac_check_health(aac)))
+               return count;
        /*
         * Wait for all commands to complete to this specific
         * target (block maximum 60 seconds).
         */
        for (count = 60; count; --count) {
-               int active = 0;
+               int active = aac->in_reset;
+
+               if (active == 0)
                __shost_for_each_device(dev, host) {
                        spin_lock_irqsave(&dev->list_lock, flags);
                        list_for_each_entry(command, &dev->cmd_list, list) {
-                               if (command->serial_number) {
+                               if ((command != cmd) &&
+                                   (command->SCp.phase == AAC_OWNER_FIRMWARE)) {
                                        active++;
                                        break;
                                }
@@ -482,15 +574,20 @@ static int aac_eh_reset(struct scsi_cmnd* cmd)
                /*
                 * We can exit If all the commands are complete
                 */
-               spin_unlock_irq(host->host_lock);
                if (active == 0)
                        return SUCCESS;
                ssleep(1);
-               spin_lock_irq(host->host_lock);
        }
-       spin_unlock_irq(host->host_lock);
        printk(KERN_ERR "%s: SCSI bus appears hung\n", AAC_DRIVERNAME);
-       return -ETIMEDOUT;
+       /*
+        * This adapter needs a blind reset, only do so for Adapters that
+        * support a register, instead of a commanded, reset.
+        */
+       if ((aac->supplement_adapter_info.SupportedOptions2 &
+         le32_to_cpu(AAC_OPTION_MU_RESET|AAC_OPTION_IGNORE_RESET)) ==
+         le32_to_cpu(AAC_OPTION_MU_RESET))
+               aac_reset_adapter(aac, 2); /* Bypass wait for command quiesce */
+       return SUCCESS; /* Cause an immediate retry of the command with a ten second delay after successful tur */
 }
 
 /**
@@ -539,6 +636,8 @@ static int aac_cfg_open(struct inode *inode, struct file *file)
 static int aac_cfg_ioctl(struct inode *inode,  struct file *file,
                unsigned int cmd, unsigned long arg)
 {
+       if (!capable(CAP_SYS_ADMIN))
+               return -EPERM;
        return aac_do_ioctl(file->private_data, cmd, (void __user *)arg);
 }
 
@@ -567,12 +666,12 @@ static long aac_compat_do_ioctl(struct aac_dev *dev, unsigned cmd, unsigned long
                
                f = compat_alloc_user_space(sizeof(*f));
                ret = 0;
-               if (clear_user(f, sizeof(*f) != sizeof(*f)))
+               if (clear_user(f, sizeof(*f)))
                        ret = -EFAULT;
                if (copy_in_user(f, (void __user *)arg, sizeof(struct fib_ioctl) - sizeof(u32)))
                        ret = -EFAULT;
                if (!ret)
-                       ret = aac_do_ioctl(dev, cmd, (void __user *)arg);
+                       ret = aac_do_ioctl(dev, cmd, f);
                break;
        }
 
@@ -592,6 +691,8 @@ static int aac_compat_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
 
 static long aac_compat_cfg_ioctl(struct file *file, unsigned cmd, unsigned long arg)
 {
+       if (!capable(CAP_SYS_ADMIN))
+               return -EPERM;
        return aac_compat_do_ioctl((struct aac_dev *)file->private_data, cmd, arg);
 }
 #endif
@@ -673,18 +774,61 @@ static ssize_t aac_show_bios_version(struct class_device *class_dev,
        return len;
 }
 
-static ssize_t aac_show_serial_number(struct class_device *class_dev,
-               char *buf)
+ssize_t aac_show_serial_number(struct class_device *class_dev, char *buf)
 {
        struct aac_dev *dev = (struct aac_dev*)class_to_shost(class_dev)->hostdata;
        int len = 0;
 
        if (le32_to_cpu(dev->adapter_info.serial[0]) != 0xBAD0)
-               len = snprintf(buf, PAGE_SIZE, "%x\n",
+               len = snprintf(buf, PAGE_SIZE, "%06X\n",
                  le32_to_cpu(dev->adapter_info.serial[0]));
+       if (len &&
+         !memcmp(&dev->supplement_adapter_info.MfgPcbaSerialNo[
+           sizeof(dev->supplement_adapter_info.MfgPcbaSerialNo)+2-len],
+         buf, len))
+               len = snprintf(buf, PAGE_SIZE, "%.*s\n",
+                 (int)sizeof(dev->supplement_adapter_info.MfgPcbaSerialNo),
+                 dev->supplement_adapter_info.MfgPcbaSerialNo);
        return len;
 }
 
+static ssize_t aac_show_max_channel(struct class_device *class_dev, char *buf)
+{
+       return snprintf(buf, PAGE_SIZE, "%d\n",
+         class_to_shost(class_dev)->max_channel);
+}
+
+static ssize_t aac_show_max_id(struct class_device *class_dev, char *buf)
+{
+       return snprintf(buf, PAGE_SIZE, "%d\n",
+         class_to_shost(class_dev)->max_id);
+}
+
+static ssize_t aac_store_reset_adapter(struct class_device *class_dev,
+               const char *buf, size_t count)
+{
+       int retval = -EACCES;
+
+       if (!capable(CAP_SYS_ADMIN))
+               return retval;
+       retval = aac_reset_adapter((struct aac_dev*)class_to_shost(class_dev)->hostdata, buf[0] == '!');
+       if (retval >= 0)
+               retval = count;
+       return retval;
+}
+
+static ssize_t aac_show_reset_adapter(struct class_device *class_dev,
+               char *buf)
+{
+       struct aac_dev *dev = (struct aac_dev*)class_to_shost(class_dev)->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 class_device_attribute aac_model = {
        .attr = {
@@ -728,6 +872,28 @@ static struct class_device_attribute aac_serial_number = {
        },
        .show = aac_show_serial_number,
 };
+static struct class_device_attribute aac_max_channel = {
+       .attr = {
+               .name = "max_channel",
+               .mode = S_IRUGO,
+       },
+       .show = aac_show_max_channel,
+};
+static struct class_device_attribute aac_max_id = {
+       .attr = {
+               .name = "max_id",
+               .mode = S_IRUGO,
+       },
+       .show = aac_show_max_id,
+};
+static struct class_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 class_device_attribute *aac_attrs[] = {
        &aac_model,
@@ -736,11 +902,14 @@ static struct class_device_attribute *aac_attrs[] = {
        &aac_monitor_version,
        &aac_bios_version,
        &aac_serial_number,
+       &aac_max_channel,
+       &aac_max_id,
+       &aac_reset,
        NULL
 };
 
 
-static struct file_operations aac_cfg_fops = {
+static const struct file_operations aac_cfg_fops = {
        .owner          = THIS_MODULE,
        .ioctl          = aac_cfg_ioctl,
 #ifdef CONFIG_COMPAT
@@ -762,6 +931,8 @@ static struct scsi_host_template aac_driver_template = {
        .bios_param                     = aac_biosparm, 
        .shost_attrs                    = aac_attrs,
        .slave_configure                = aac_slave_configure,
+       .change_queue_depth             = aac_change_queue_depth,
+       .eh_abort_handler               = aac_eh_abort,
        .eh_host_reset_handler          = aac_eh_reset,
        .can_queue                      = AAC_NUM_IO_FIB,       
        .this_id                        = MAXIMUM_NUM_CONTAINERS,
@@ -773,8 +944,16 @@ static struct scsi_host_template aac_driver_template = {
        .cmd_per_lun                    = AAC_NUM_IO_FIB, 
 #endif 
        .use_clustering                 = ENABLE_CLUSTERING,
+       .emulated                       = 1,
 };
 
+static void __aac_shutdown(struct aac_dev * aac)
+{
+       kthread_stop(aac->thread);
+       aac_send_shutdown(aac);
+       aac_adapter_disable_int(aac);
+       free_irq(aac->pdev->irq, aac);
+}
 
 static int __devinit aac_probe_one(struct pci_dev *pdev,
                const struct pci_device_id *id)
@@ -796,18 +975,19 @@ static int __devinit aac_probe_one(struct pci_dev *pdev,
        error = pci_enable_device(pdev);
        if (error)
                goto out;
+       error = -ENODEV;
 
        if (pci_set_dma_mask(pdev, DMA_32BIT_MASK) || 
                        pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))
-               goto out;
+               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) 
-               if (pci_set_dma_mask(pdev, 0x7FFFFFFFULL) ||
-                               pci_set_consistent_dma_mask(pdev, 0x7FFFFFFFULL))
-                       goto out;
+               if (pci_set_dma_mask(pdev, DMA_31BIT_MASK) ||
+                               pci_set_consistent_dma_mask(pdev, DMA_31BIT_MASK))
+                       goto out_disable_pdev;
        
        pci_set_master(pdev);
 
@@ -837,23 +1017,16 @@ static int __devinit aac_probe_one(struct pci_dev *pdev,
         *      Map in the registers from the adapter.
         */
        aac->base_size = AAC_MIN_FOOTPRINT_SIZE;
-       if ((aac->regs.sa = ioremap(
-         (unsigned long)aac->scsi_host_ptr->base, AAC_MIN_FOOTPRINT_SIZE))
-         == NULL) {    
-               printk(KERN_WARNING "%s: unable to map adapter.\n",
-                 AAC_DRIVERNAME);
-               goto out_free_fibs;
-       }
        if ((*aac_drivers[index].init)(aac))
                goto out_unmap;
 
        /*
         *      Start any kernel threads needed
         */
-       aac->thread_pid = kernel_thread((int (*)(void *))aac_command_thread,
-         aac, 0);
-       if (aac->thread_pid < 0) {
+       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);
                goto out_deinit;
        }
 
@@ -901,12 +1074,12 @@ static int __devinit aac_probe_one(struct pci_dev *pdev,
         * all containers are on the virtual channel 0 (CONTAINER_CHANNEL)
         * physical channels are address by their actual physical number+1
         */
-       if (aac->nondasd_support == 1)
-               shost->max_channel = aac->maximum_num_channels + 1;
+       if ((aac->nondasd_support == 1) || expose_physicals)
+               shost->max_channel = aac->maximum_num_channels;
        else
-               shost->max_channel = 1;
+               shost->max_channel = 0;
 
-       aac_get_config_status(aac);
+       aac_get_config_status(aac, 0);
        aac_get_containers(aac);
        list_add(&aac->entry, insert);
 
@@ -934,18 +1107,14 @@ static int __devinit aac_probe_one(struct pci_dev *pdev,
        return 0;
 
  out_deinit:
-       kill_proc(aac->thread_pid, SIGKILL, 0);
-       wait_for_completion(&aac->aif_completion);
-
-       aac_send_shutdown(aac);
-       aac_adapter_disable_int(aac);
-       free_irq(pdev->irq, aac);
+       __aac_shutdown(aac);
  out_unmap:
        aac_fib_map_free(aac);
-       pci_free_consistent(aac->pdev, aac->comm_size, aac->comm_addr, aac->comm_phys);
+       if (aac->comm_addr)
+               pci_free_consistent(aac->pdev, aac->comm_size, aac->comm_addr,
+                 aac->comm_phys);
        kfree(aac->queues);
-       iounmap(aac->regs.sa);
- out_free_fibs:
+       aac_adapter_ioremap(aac, 0);
        kfree(aac->fibs);
        kfree(aac->fsa_dev);
  out_free_host:
@@ -959,8 +1128,8 @@ static int __devinit aac_probe_one(struct pci_dev *pdev,
 static void aac_shutdown(struct pci_dev *dev)
 {
        struct Scsi_Host *shost = pci_get_drvdata(dev);
-       struct aac_dev *aac = (struct aac_dev *)shost->hostdata;
-       aac_send_shutdown(aac);
+       scsi_block_requests(shost);
+       __aac_shutdown((struct aac_dev *)shost->hostdata);
 }
 
 static void __devexit aac_remove_one(struct pci_dev *pdev)
@@ -970,18 +1139,13 @@ static void __devexit aac_remove_one(struct pci_dev *pdev)
 
        scsi_remove_host(shost);
 
-       kill_proc(aac->thread_pid, SIGKILL, 0);
-       wait_for_completion(&aac->aif_completion);
-
-       aac_send_shutdown(aac);
-       aac_adapter_disable_int(aac);
+       __aac_shutdown(aac);
        aac_fib_map_free(aac);
        pci_free_consistent(aac->pdev, aac->comm_size, aac->comm_addr,
                        aac->comm_phys);
        kfree(aac->queues);
 
-       free_irq(pdev->irq, aac);
-       iounmap(aac->regs.sa);
+       aac_adapter_ioremap(aac, 0);
        
        kfree(aac->fibs);
        kfree(aac->fsa_dev);
@@ -989,6 +1153,10 @@ static void __devexit aac_remove_one(struct pci_dev *pdev)
        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 = -1;
+       }
 }
 
 static struct pci_driver aac_pci_driver = {
@@ -1003,7 +1171,7 @@ static int __init aac_init(void)
 {
        int error;
        
-       printk(KERN_INFO "Adaptec %s driver (%s)\n",
+       printk(KERN_INFO "Adaptec %s driver %s\n",
          AAC_DRIVERNAME, aac_driver_version);
 
        error = pci_register_driver(&aac_pci_driver);
@@ -1021,7 +1189,8 @@ static int __init aac_init(void)
 
 static void __exit aac_exit(void)
 {
-       unregister_chrdev(aac_cfg_major, "aac");
+       if (aac_cfg_major > -1)
+               unregister_chrdev(aac_cfg_major, "aac");
        pci_unregister_driver(&aac_pci_driver);
 }