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VServer 1.9.2 (patch-2.6.8.1-vs1.9.2.diff)
[linux-2.6.git] / drivers / scsi / 3w-xxxx.c
diff --git a/drivers/scsi/3w-xxxx.c b/drivers/scsi/3w-xxxx.c
index 5987455..b8731f2 100644 (file)
--- a/drivers/scsi/3w-xxxx.c
+++ b/drivers/scsi/3w-xxxx.c
@@ -1,12 +1,12 @@
 /* 
    3w-xxxx.c -- 3ware Storage Controller device driver for Linux.
 
-   Written By: Adam Radford <linux@3ware.com>
+   Written By: Adam Radford <linuxraid@amcc.com>
    Modifications By: Joel Jacobson <linux@3ware.com>
                     Arnaldo Carvalho de Melo <acme@conectiva.com.br>
                      Brad Strand <linux@3ware.com>
 
-   Copyright (C) 1999-2003 3ware Inc.
+   Copyright (C) 1999-2004 3ware Inc.
 
    Kernel compatiblity By:     Andre Hedrick <andre@suse.com>
    Non-Copyright (C) 2000      Andre Hedrick <andre@suse.com>
@@ -47,10 +47,10 @@
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
 
    Bugs/Comments/Suggestions should be mailed to:                            
-   linux@3ware.com
+   linuxraid@amcc.com
 
    For more information, goto:
-   http://www.3ware.com
+   http://www.amcc.com
 
    History
    -------
@@ -179,6 +179,11 @@
    1.02.00.036 - Increase character ioctl timeout to 60 seconds.
    1.02.00.037 - Fix tw_ioctl() to handle all non-data ATA passthru cmds
                  for 'smartmontools' support.
+   1.26.00.038 - Roll driver minor version to 26 to denote kernel 2.6.
+                 Add support for cmds_per_lun module parameter.
+   1.26.00.039 - Fix bug in tw_chrdev_ioctl() polling code.
+                 Fix data_buffer_length usage in tw_chrdev_ioctl().
+                 Update contact information.
 */
 
 #include <linux/module.h>
@@ -205,6 +210,7 @@ MODULE_LICENSE("GPL");
 #include <linux/reboot.h>
 #include <linux/spinlock.h>
 #include <linux/interrupt.h>
+#include <linux/moduleparam.h>
 
 #include <asm/errno.h>
 #include <asm/io.h>
@@ -214,7 +220,7 @@ MODULE_LICENSE("GPL");
 #define __3W_C                 /* let 3w-xxxx.h know it is use */
 
 #include "scsi.h"
-#include "hosts.h"
+#include <scsi/scsi_host.h>
 
 #include "3w-xxxx.h"
 
@@ -242,10 +248,15 @@ static struct file_operations tw_fops = {
 };
 
 /* Globals */
-char *tw_driver_version="1.02.00.037";
+char *tw_driver_version="1.26.00.039";
 TW_Device_Extension *tw_device_extension_list[TW_MAX_SLOT];
 int tw_device_extension_count = 0;
 static int twe_major = -1;
+static int cmds_per_lun;
+
+/* Module parameters */
+module_param(cmds_per_lun, int, 0);
+MODULE_PARM_DESC(cmds_per_lun, "Maximum commands per LUN");
 
 /* Functions */
 
@@ -639,6 +650,7 @@ static int tw_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int
        TW_Passthru *passthru;
        TW_Device_Extension *tw_dev = tw_device_extension_list[iminor(inode)];
        int retval = -EFAULT;
+       void __user *argp = (void __user *)arg;
 
        dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl()\n");
 
@@ -647,7 +659,7 @@ static int tw_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int
                return -EINTR;
 
        /* First copy down the buffer length */
-       error = copy_from_user(&data_buffer_length, (void *)arg, sizeof(unsigned int));
+       error = copy_from_user(&data_buffer_length, argp, sizeof(unsigned int));
        if (error)
                goto out;
 
@@ -670,7 +682,7 @@ static int tw_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int
        tw_ioctl = (TW_New_Ioctl *)cpu_addr;
 
        /* Now copy down the entire ioctl */
-       error = copy_from_user(tw_ioctl, (void *)arg, data_buffer_length + sizeof(TW_New_Ioctl) - 1);
+       error = copy_from_user(tw_ioctl, argp, data_buffer_length + sizeof(TW_New_Ioctl) - 1);
        if (error)
                goto out2;
 
@@ -683,7 +695,7 @@ static int tw_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int
                        break;
                case TW_OP_AEN_LISTEN:
                        dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl(): caught TW_AEN_LISTEN.\n");
-                       memset(tw_ioctl->data_buffer, 0, tw_ioctl->data_buffer_length);
+                       memset(tw_ioctl->data_buffer, 0, data_buffer_length);
 
                        spin_lock_irqsave(tw_dev->host->host_lock, flags);
                        if (tw_dev->aen_head == tw_dev->aen_tail) {
@@ -738,7 +750,7 @@ static int tw_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int
                        timeout = TW_IOCTL_CHRDEV_TIMEOUT*HZ;
 
                        /* Now wait for the command to complete */
-                       wait_event_interruptible_timeout(tw_dev->ioctl_wqueue, tw_dev->chrdev_request_id == TW_IOCTL_CHRDEV_FREE, timeout);
+                       timeout = wait_event_interruptible_timeout(tw_dev->ioctl_wqueue, tw_dev->chrdev_request_id == TW_IOCTL_CHRDEV_FREE, timeout);
 
                        /* Check if we timed out, got a signal, or didn't get
                           an interrupt */
@@ -777,7 +789,7 @@ static int tw_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int
        }
 
        /* Now copy the response to userspace */
-       error = copy_to_user((void *)arg, tw_ioctl, sizeof(TW_New_Ioctl) + tw_ioctl->data_buffer_length - 1);
+       error = copy_to_user(argp, tw_ioctl, sizeof(TW_New_Ioctl) + data_buffer_length - 1);
        if (error == 0)
                retval = 0;
 out2:
@@ -1141,14 +1153,6 @@ int tw_findcards(Scsi_Host_Template *tw_host)
                        /* Set card status as online */
                        tw_dev->online = 1;
 
-#ifdef CONFIG_3W_XXXX_CMD_PER_LUN
-                       tw_host->cmd_per_lun = CONFIG_3W_XXXX_CMD_PER_LUN;
-                       if (tw_host->cmd_per_lun > TW_MAX_CMDS_PER_LUN)
-                               tw_host->cmd_per_lun = TW_MAX_CMDS_PER_LUN;
-#else
-                       /* Use SHT cmd_per_lun here */
-                       tw_host->cmd_per_lun = TW_MAX_CMDS_PER_LUN;
-#endif
                        tw_dev->free_head = TW_Q_START;
                        tw_dev->free_tail = TW_Q_START;
                        tw_dev->free_wrap = TW_Q_LENGTH - 1;
@@ -3386,13 +3390,13 @@ int tw_slave_configure(Scsi_Device *SDptr)
 
        dprintk(KERN_WARNING "3w-xxxx: tw_slave_configure()\n");
 
-#ifdef CONFIG_3W_XXXX_CMD_PER_LUN
-       max_cmds = CONFIG_3W_XXXX_CMD_PER_LUN;
-       if (max_cmds > TW_MAX_CMDS_PER_LUN)
+       if (cmds_per_lun) {
+               max_cmds = cmds_per_lun;
+               if (max_cmds > TW_MAX_CMDS_PER_LUN)
+                       max_cmds = TW_MAX_CMDS_PER_LUN;
+       } else {
                max_cmds = TW_MAX_CMDS_PER_LUN;
-#else
-       max_cmds = TW_MAX_CMDS_PER_LUN;
-#endif
+       }
        scsi_adjust_queue_depth(SDptr, MSG_ORDERED_TAG, max_cmds);
 
        return 0;
@@ -3488,6 +3492,7 @@ static Scsi_Host_Template driver_template = {
        .eh_abort_handler       = tw_scsi_eh_abort,
        .eh_host_reset_handler  = tw_scsi_eh_reset,
        .bios_param             = tw_scsi_biosparam,
+       .slave_configure        = tw_slave_configure,
        .can_queue              = TW_Q_LENGTH-2,
        .this_id                = -1,
        .sg_tablesize           = TW_MAX_SGL_LENGTH,
linux-2.6