Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 1380 insertions, 0 deletions

diff --git a/drivers/char/rio/rio_linux.c b/drivers/char/rio/rio_linux.c
new file mode 100644
index 00000000000..a91ae271cf0
--- /dev/null
+++ b/drivers/char/rio/rio_linux.c
@@ -0,0 +1,1380 @@
+
+/* rio_linux.c -- Linux driver for the Specialix RIO series cards. 
+ *
+ *
+ *   (C) 1999 R.E.Wolff@BitWizard.nl
+ *
+ * Specialix pays for the development and support of this driver.
+ * Please DO contact support@specialix.co.uk if you require
+ * support. But please read the documentation (rio.txt) first.
+ *
+ *
+ *
+ *      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 the Free Software Foundation; either version 2 of
+ *      the License, or (at your option) any later version.
+ *
+ *      This program is distributed in the hope that it will be
+ *      useful, but WITHOUT ANY WARRANTY; without even the implied
+ *      warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ *      PURPOSE.  See the GNU General Public License for more details.
+ *
+ *      You should have received a copy of the GNU General Public
+ *      License along with this program; if not, write to the Free
+ *      Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
+ *      USA.
+ *
+ * Revision history:
+ * $Log: rio.c,v $
+ * Revision 1.1  1999/07/11 10:13:54  wolff
+ * Initial revision
+ *
+ * */
+
+#include <linux/module.h>
+#include <linux/config.h> 
+#include <linux/kdev_t.h>
+#include <asm/io.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/ioport.h>
+#include <linux/interrupt.h>
+#include <linux/errno.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/mm.h>
+#include <linux/serial.h>
+#include <linux/fcntl.h>
+#include <linux/major.h>
+#include <linux/delay.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/miscdevice.h>
+#include <linux/init.h>
+
+#include <linux/generic_serial.h>
+#include <asm/uaccess.h>
+
+#if BITS_PER_LONG != 32
+#  error FIXME: this driver only works on 32-bit platforms
+#endif
+
+#include "linux_compat.h"
+#include "typdef.h"
+#include "pkt.h"
+#include "daemon.h"
+#include "rio.h"
+#include "riospace.h"
+#include "top.h"
+#include "cmdpkt.h"
+#include "map.h"
+#include "riotypes.h"
+#include "rup.h"
+#include "port.h"
+#include "riodrvr.h"
+#include "rioinfo.h"
+#include "func.h"
+#include "errors.h"
+#include "pci.h"
+
+#include "parmmap.h"
+#include "unixrup.h"
+#include "board.h"
+#include "host.h"
+#include "error.h"
+#include "phb.h"
+#include "link.h"
+#include "cmdblk.h"
+#include "route.h"
+#include "control.h"
+#include "cirrus.h"
+#include "rioioctl.h"
+#include "param.h"
+#include "list.h"
+#include "sam.h"
+#include "protsts.h"
+#include "rioboard.h"
+
+
+#include "rio_linux.h"
+
+/* I don't think that this driver can handle more than 512 ports on
+one machine.  Specialix specifies max 4 boards in one machine. I don't
+know why. If you want to try anyway you'll have to increase the number
+of boards in rio.h.  You'll have to allocate more majors if you need
+more than 512 ports.... */
+
+#ifndef RIO_NORMAL_MAJOR0
+/* This allows overriding on the compiler commandline, or in a "major.h" 
+   include or something like that */
+#define RIO_NORMAL_MAJOR0  154
+#define RIO_NORMAL_MAJOR1  156
+#endif
+
+#ifndef PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8
+#define PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8 0x2000
+#endif
+
+#ifndef RIO_WINDOW_LEN 
+#define RIO_WINDOW_LEN 0x10000
+#endif
+
+
+/* Configurable options: 
+   (Don't be too sure that it'll work if you toggle them) */
+
+/* Am I paranoid or not ? ;-) */
+#undef RIO_PARANOIA_CHECK
+
+
+/* 20 -> 2000 per second. The card should rate-limit interrupts at 1000
+   Hz, but it is user configurable. I don't recommend going above 1000
+   Hz. The interrupt ratelimit might trigger if the interrupt is
+   shared with a very active other device. 
+   undef this if you want to disable the check....
+*/
+#define IRQ_RATE_LIMIT 200
+
+#if 0
+/* Not implemented */
+/* 
+ * The following defines are mostly for testing purposes. But if you need
+ * some nice reporting in your syslog, you can define them also.
+ */
+#define RIO_REPORT_FIFO
+#define RIO_REPORT_OVERRUN
+#endif 
+
+
+/* These constants are derived from SCO Source */
+static struct Conf
+RIOConf =
+{
+  /* locator */         "RIO Config here",
+  /* startuptime */     HZ*2,           /* how long to wait for card to run */
+  /* slowcook */        0,              /* TRUE -> always use line disc. */
+  /* intrpolltime */    1,              /* The frequency of OUR polls */
+  /* breakinterval */   25,             /* x10 mS XXX: units seem to be 1ms not 10! -- REW*/
+  /* timer */           10,             /* mS */
+  /* RtaLoadBase */     0x7000,
+  /* HostLoadBase */    0x7C00,
+  /* XpHz */            5,              /* number of Xprint hits per second */
+  /* XpCps */           120,            /* Xprint characters per second */
+  /* XpOn */            "\033d#",       /* start Xprint for a wyse 60 */
+  /* XpOff */           "\024",         /* end Xprint for a wyse 60 */
+  /* MaxXpCps */        2000,           /* highest Xprint speed */
+  /* MinXpCps */        10,             /* slowest Xprint speed */
+  /* SpinCmds */        1,              /* non-zero for mega fast boots */
+  /* First Addr */      0x0A0000,       /* First address to look at */
+  /* Last Addr */       0xFF0000,       /* Last address looked at */
+  /* BufferSize */      1024,           /* Bytes per port of buffering */
+  /* LowWater */        256,            /* how much data left before wakeup */
+  /* LineLength */      80,             /* how wide is the console? */
+  /* CmdTimeout */      HZ,             /* how long a close command may take */
+};
+
+
+
+
+/* Function prototypes */
+
+static void rio_disable_tx_interrupts (void * ptr); 
+static void rio_enable_tx_interrupts (void * ptr); 
+static void rio_disable_rx_interrupts (void * ptr); 
+static void rio_enable_rx_interrupts (void * ptr); 
+static int  rio_get_CD (void * ptr); 
+static void rio_shutdown_port (void * ptr);
+static int  rio_set_real_termios (void  *ptr);
+static void rio_hungup (void  *ptr);
+static void rio_close (void  *ptr);
+static int rio_chars_in_buffer (void * ptr);
+static int rio_fw_ioctl (struct inode *inode, struct file *filp,
+		         unsigned int cmd, unsigned long arg);
+static int rio_init_drivers(void);
+
+static void my_hd (void *addr, int len);
+
+static struct tty_driver *rio_driver, *rio_driver2;
+
+/* The name "p" is a bit non-descript. But that's what the rio-lynxos
+sources use all over the place. */
+struct rio_info *p;
+
+int rio_debug;
+
+
+/* You can have the driver poll your card. 
+    - Set rio_poll to 1 to poll every timer tick (10ms on Intel). 
+      This is used when the card cannot use an interrupt for some reason.
+*/
+static int rio_poll = 1;
+
+
+/* These are the only open spaces in my computer. Yours may have more
+   or less.... */
+static int rio_probe_addrs[]= {0xc0000, 0xd0000, 0xe0000};
+
+#define NR_RIO_ADDRS (sizeof(rio_probe_addrs)/sizeof (int))
+
+
+/* Set the mask to all-ones. This alas, only supports 32 interrupts. 
+   Some architectures may need more. -- Changed to LONG to
+   support up to 64 bits on 64bit architectures. -- REW 20/06/99 */
+long rio_irqmask = -1;
+
+MODULE_AUTHOR("Rogier Wolff <R.E.Wolff@bitwizard.nl>, Patrick van de Lageweg <patrick@bitwizard.nl>");
+MODULE_DESCRIPTION("RIO driver");
+MODULE_LICENSE("GPL");
+module_param(rio_poll, int, 0);
+module_param(rio_debug, int, 0644);
+module_param(rio_irqmask, long, 0);
+
+static struct real_driver rio_real_driver = {
+  rio_disable_tx_interrupts,
+  rio_enable_tx_interrupts,
+  rio_disable_rx_interrupts,
+  rio_enable_rx_interrupts,
+  rio_get_CD,
+  rio_shutdown_port, 
+  rio_set_real_termios, 
+  rio_chars_in_buffer,
+  rio_close,
+  rio_hungup,
+  NULL
+};
+
+/* 
+ *  Firmware loader driver specific routines
+ *
+ */
+
+static struct file_operations rio_fw_fops = {
+	.owner		= THIS_MODULE,
+	.ioctl		= rio_fw_ioctl,
+};
+
+static struct miscdevice rio_fw_device = {
+	RIOCTL_MISC_MINOR, "rioctl", &rio_fw_fops
+};
+
+
+
+
+
+#ifdef RIO_PARANOIA_CHECK
+
+/* This doesn't work. Who's paranoid around here? Not me! */
+
+static inline int rio_paranoia_check(struct rio_port const * port,
+				    char *name, const char *routine)
+{
+
+  static const char *badmagic =
+    KERN_ERR "rio: Warning: bad rio port magic number for device %s in %s\n";
+  static const char *badinfo =
+    KERN_ERR "rio: Warning: null rio port for device %s in %s\n";
+ 
+  if (!port) {
+    printk (badinfo, name, routine);
+    return 1;
+  }
+  if (port->magic != RIO_MAGIC) {
+    printk (badmagic, name, routine);
+    return 1;
+  }
+
+  return 0;
+}
+#else
+#define rio_paranoia_check(a,b,c) 0
+#endif
+
+
+#ifdef DEBUG
+static void my_hd (void *ad, int len)
+{
+  int i, j, ch;
+  unsigned char *addr = ad;
+  
+  for (i=0;i<len;i+=16) {
+    rio_dprintk (RIO_DEBUG_PARAM, "%08x ", (int) addr+i);
+    for (j=0;j<16;j++) {
+      rio_dprintk (RIO_DEBUG_PARAM, "%02x %s", addr[j+i], (j==7)?" ":"");
+    }
+    for (j=0;j<16;j++) {
+      ch = addr[j+i];
+      rio_dprintk (RIO_DEBUG_PARAM, "%c", (ch < 0x20)?'.':((ch > 0x7f)?'.':ch));
+    }
+    rio_dprintk (RIO_DEBUG_PARAM, "\n");
+  }
+}
+#else
+#define my_hd(ad,len) do{/* nothing*/ } while (0)
+#endif
+
+
+/* Delay a number of jiffies, allowing a signal to interrupt */ 
+int RIODelay (struct Port *PortP, int njiffies)
+{
+  func_enter ();
+
+  rio_dprintk (RIO_DEBUG_DELAY, "delaying %d jiffies\n", njiffies);  
+  msleep_interruptible(jiffies_to_msecs(njiffies));
+  func_exit();
+
+  if (signal_pending(current))
+    return RIO_FAIL;
+  else
+    return !RIO_FAIL;
+}
+
+
+/* Delay a number of jiffies, disallowing a signal to interrupt */ 
+int RIODelay_ni (struct Port *PortP, int njiffies)
+{
+  func_enter ();
+
+  rio_dprintk (RIO_DEBUG_DELAY, "delaying %d jiffies (ni)\n", njiffies);  
+  msleep(jiffies_to_msecs(njiffies));
+  func_exit();
+  return !RIO_FAIL;
+}
+
+
+int rio_minor(struct tty_struct *tty)
+{
+	return tty->index + (tty->driver == rio_driver) ? 0 : 256;
+}
+
+
+int rio_ismodem(struct tty_struct *tty)
+{
+	return 1;
+}
+
+
+void rio_udelay (int usecs)
+{
+  udelay (usecs);
+}
+
+static int rio_set_real_termios (void *ptr)
+{
+  int rv, modem;
+  struct tty_struct *tty;
+  func_enter();
+
+  tty = ((struct Port *)ptr)->gs.tty;
+
+  modem = rio_ismodem(tty);
+
+  rv = RIOParam( (struct Port *) ptr, CONFIG, modem, 1);
+
+  func_exit ();
+
+  return rv;
+}
+
+
+static void rio_reset_interrupt (struct Host *HostP)
+{
+  func_enter();
+
+  switch( HostP->Type ) {
+  case RIO_AT:
+  case RIO_MCA:
+  case RIO_PCI:
+    WBYTE(HostP->ResetInt , 0xff);
+  }
+
+  func_exit();
+}
+
+
+static irqreturn_t rio_interrupt (int irq, void *ptr, struct pt_regs *regs)
+{
+  struct Host *HostP;
+  func_enter ();
+
+  HostP = (struct Host*)ptr; /* &p->RIOHosts[(long)ptr]; */
+  rio_dprintk (RIO_DEBUG_IFLOW, "rio: enter rio_interrupt (%d/%d)\n", 
+               irq, HostP->Ivec); 
+
+  /* AAargh! The order in which to do these things is essential and
+     not trivial. 
+     
+     - Rate limit goes before "recursive". Otherwise a series of
+       recursive calls will hang the machine in the interrupt routine. 
+
+     - hardware twiddling goes before "recursive". Otherwise when we
+       poll the card, and a recursive interrupt happens, we won't
+       ack the card, so it might keep on interrupting us. (especially
+       level sensitive interrupt systems like PCI).
+
+     - Rate limit goes before hardware twiddling. Otherwise we won't
+       catch a card that has gone bonkers.
+
+     - The "initialized" test goes after the hardware twiddling. Otherwise
+       the card will stick us in the interrupt routine again.
+
+     - The initialized test goes before recursive. 
+  */
+
+
+
+#ifdef IRQ_RATE_LIMIT
+  /* Aaargh! I'm ashamed. This costs more lines-of-code than the
+     actual interrupt routine!. (Well, used to when I wrote that comment) */
+  {
+    static int lastjif;
+    static int nintr=0;
+
+    if (lastjif == jiffies) {
+      if (++nintr > IRQ_RATE_LIMIT) {
+        free_irq (HostP->Ivec, ptr);
+        printk (KERN_ERR "rio: Too many interrupts. Turning off interrupt %d.\n", 
+                HostP->Ivec);
+      }
+    } else {
+      lastjif = jiffies;
+      nintr = 0;
+    }
+  }
+#endif
+  rio_dprintk (RIO_DEBUG_IFLOW, "rio: We've have noticed the interrupt\n"); 
+  if (HostP->Ivec == irq) {
+    /* Tell the card we've noticed the interrupt. */
+    rio_reset_interrupt (HostP);
+  }
+
+  if ((HostP->Flags & RUN_STATE) != RC_RUNNING)
+  	return IRQ_HANDLED;
+
+  if (test_and_set_bit (RIO_BOARD_INTR_LOCK, &HostP->locks)) {
+    printk (KERN_ERR "Recursive interrupt! (host %d/irq%d)\n", 
+            (int) ptr, HostP->Ivec);
+    return IRQ_HANDLED;
+  }
+
+  RIOServiceHost(p, HostP, irq);
+
+  rio_dprintk ( RIO_DEBUG_IFLOW, "riointr() doing host %d type %d\n", 
+                (int) ptr, HostP->Type);
+
+  clear_bit (RIO_BOARD_INTR_LOCK, &HostP->locks);
+  rio_dprintk (RIO_DEBUG_IFLOW, "rio: exit rio_interrupt (%d/%d)\n", 
+               irq, HostP->Ivec); 
+  func_exit ();
+  return IRQ_HANDLED;
+}
+
+
+static void rio_pollfunc (unsigned long data)
+{
+  func_enter ();
+
+  rio_interrupt (0, &p->RIOHosts[data], NULL);
+  p->RIOHosts[data].timer.expires = jiffies + rio_poll;
+  add_timer (&p->RIOHosts[data].timer);
+
+  func_exit ();
+}
+
+
+/* ********************************************************************** *
+ *                Here are the routines that actually                     *
+ *              interface with the generic_serial driver                  *
+ * ********************************************************************** */
+
+/* Ehhm. I don't know how to fiddle with interrupts on the Specialix 
+   cards. ....   Hmm. Ok I figured it out. You don't.  -- REW */
+
+static void rio_disable_tx_interrupts (void * ptr) 
+{
+  func_enter();
+
+  /*  port->gs.flags &= ~GS_TX_INTEN; */
+
+  func_exit();
+}
+
+
+static void rio_enable_tx_interrupts (void * ptr) 
+{
+  struct Port *PortP = ptr;
+  /* int hn; */
+
+  func_enter();
+
+  /* hn = PortP->HostP - p->RIOHosts;
+
+     rio_dprintk (RIO_DEBUG_TTY, "Pushing host %d\n", hn);
+     rio_interrupt (-1,(void *) hn, NULL); */
+
+  RIOTxEnable((char *) PortP);
+
+  /* 
+   * In general we cannot count on "tx empty" interrupts, although
+   * the interrupt routine seems to be able to tell the difference. 
+   */
+  PortP->gs.flags &= ~GS_TX_INTEN;
+
+  func_exit();
+}
+
+
+static void rio_disable_rx_interrupts (void * ptr) 
+{
+  func_enter();
+  func_exit();
+}
+
+static void rio_enable_rx_interrupts (void * ptr) 
+{
+  /*  struct rio_port *port = ptr; */
+  func_enter();
+  func_exit();
+}
+
+
+/* Jeez. Isn't this simple?  */
+static int rio_get_CD (void * ptr) 
+{
+  struct Port *PortP = ptr;
+  int rv;
+
+  func_enter();
+  rv = (PortP->ModemState & MSVR1_CD) != 0;
+
+  rio_dprintk (RIO_DEBUG_INIT, "Getting CD status: %d\n", rv);
+  
+  func_exit();  
+  return rv;
+}
+
+
+/* Jeez. Isn't this simple? Actually, we can sync with the actual port
+   by just pushing stuff into the queue going to the port... */
+static int rio_chars_in_buffer (void * ptr) 
+{
+  func_enter();
+
+  func_exit();  
+  return 0;
+}
+
+
+/* Nothing special here... */
+static void rio_shutdown_port (void * ptr) 
+{
+  struct Port *PortP;
+
+  func_enter();
+
+  PortP = (struct Port *)ptr;
+  PortP->gs.tty = NULL;
+#if 0
+  port->gs.flags &= ~ GS_ACTIVE;
+  if (!port->gs.tty) {
+    rio_dprintk (RIO_DBUG_TTY, "No tty.\n");
+    return;
+  }
+  if (!port->gs.tty->termios) {
+    rio_dprintk (RIO_DEBUG_TTY, "No termios.\n");
+    return;
+  }
+  if (port->gs.tty->termios->c_cflag & HUPCL) {
+    rio_setsignals (port, 0, 0);
+  }
+#endif
+
+  func_exit();
+}
+
+
+/* I haven't the foggiest why the decrement use count has to happen
+   here. The whole linux serial drivers stuff needs to be redesigned.
+   My guess is that this is a hack to minimize the impact of a bug
+   elsewhere. Thinking about it some more. (try it sometime) Try
+   running minicom on a serial port that is driven by a modularized
+   driver. Have the modem hangup. Then remove the driver module. Then
+   exit minicom.  I expect an "oops".  -- REW */
+static void rio_hungup (void *ptr)
+{
+  struct Port *PortP;
+
+  func_enter();
+  
+  PortP = (struct Port *)ptr;
+  PortP->gs.tty = NULL;
+
+  func_exit ();
+}
+
+
+/* The standard serial_close would become shorter if you'd wrap it like
+   this. 
+   rs_close (...){save_flags;cli;real_close();dec_use_count;restore_flags;}
+ */
+static void rio_close (void *ptr)
+{
+  struct Port *PortP;
+
+  func_enter ();
+
+  PortP = (struct Port *)ptr;
+
+  riotclose (ptr);
+
+  if(PortP->gs.count) {
+    printk (KERN_ERR "WARNING port count:%d\n", PortP->gs.count);
+    PortP->gs.count = 0; 
+  }                
+
+  PortP->gs.tty = NULL;
+  func_exit ();
+}
+
+
+
+static int rio_fw_ioctl (struct inode *inode, struct file *filp,
+		         unsigned int cmd, unsigned long arg)
+{
+  int rc = 0;
+  func_enter();
+
+  /* The "dev" argument isn't used. */
+  rc = riocontrol (p, 0, cmd, (void *)arg, capable(CAP_SYS_ADMIN));
+
+  func_exit ();
+  return rc;
+}
+
+extern int RIOShortCommand(struct rio_info *p, struct Port *PortP,
+               int command, int len, int arg);
+
+static int rio_ioctl (struct tty_struct * tty, struct file * filp, 
+                     unsigned int cmd, unsigned long arg)
+{
+  int rc;
+  struct Port *PortP;
+  int ival;
+
+  func_enter();
+
+  PortP = (struct Port *)tty->driver_data;
+
+  rc  = 0;
+  switch (cmd) {
+#if 0
+  case TIOCGSOFTCAR:
+    rc = put_user(((tty->termios->c_cflag & CLOCAL) ? 1 : 0),
+                  (unsigned int *) arg);
+    break;
+#endif
+  case TIOCSSOFTCAR:
+    if ((rc = get_user(ival, (unsigned int *) arg)) == 0) {
+      tty->termios->c_cflag =
+        (tty->termios->c_cflag & ~CLOCAL) |
+        (ival ? CLOCAL : 0);
+    }
+    break;
+  case TIOCGSERIAL:
+    rc = -EFAULT;
+    if (access_ok(VERIFY_WRITE, (void *) arg,
+                          sizeof(struct serial_struct)))
+      rc = gs_getserial(&PortP->gs, (struct serial_struct *) arg);
+    break;
+  case TCSBRK:
+    if ( PortP->State & RIO_DELETED ) {
+      rio_dprintk (RIO_DEBUG_TTY, "BREAK on deleted RTA\n");
+      rc = -EIO;      
+    } else {
+      if (RIOShortCommand(p, PortP, SBREAK, 2, 250) == RIO_FAIL) {
+         rio_dprintk (RIO_DEBUG_INTR, "SBREAK RIOShortCommand failed\n");
+         rc = -EIO;
+      }          
+    }
+    break;
+  case TCSBRKP:
+    if ( PortP->State & RIO_DELETED ) {
+      rio_dprintk (RIO_DEBUG_TTY, "BREAK on deleted RTA\n");
+      rc = -EIO;      
+    } else {
+      int l;
+      l = arg?arg*100:250;
+      if (l > 255) l = 255;
+      if (RIOShortCommand(p, PortP, SBREAK, 2, arg?arg*100:250) == RIO_FAIL) {
+         rio_dprintk (RIO_DEBUG_INTR, "SBREAK RIOShortCommand failed\n");
+         rc = -EIO;
+      }          
+    }
+    break;
+  case TIOCSSERIAL:
+    rc = -EFAULT;
+    if (access_ok(VERIFY_READ, (void *) arg,
+                          sizeof(struct serial_struct)))
+      rc = gs_setserial(&PortP->gs, (struct serial_struct *) arg);
+    break;
+#if 0
+  /*
+   * note: these IOCTLs no longer reach here.  Use
+   * tiocmset/tiocmget driver methods instead.  The
+   * #if 0 disablement predates this comment.
+   */
+  case TIOCMGET:
+    rc = -EFAULT;
+    if (access_ok(VERIFY_WRITE, (void *) arg,
+                          sizeof(unsigned int))) {
+      rc = 0;
+      ival = rio_getsignals(port);
+      put_user(ival, (unsigned int *) arg);
+    }
+    break;
+  case TIOCMBIS:
+    if ((rc = get_user(ival, (unsigned int *) arg)) == 0) {
+      rio_setsignals(port, ((ival & TIOCM_DTR) ? 1 : -1),
+                           ((ival & TIOCM_RTS) ? 1 : -1));
+    }
+    break;
+  case TIOCMBIC:
+    if ((rc = get_user(ival, (unsigned int *) arg)) == 0) {
+      rio_setsignals(port, ((ival & TIOCM_DTR) ? 0 : -1),
+                           ((ival & TIOCM_RTS) ? 0 : -1));
+    }
+    break;
+  case TIOCMSET:
+    if ((rc = get_user(ival, (unsigned int *) arg)) == 0) {
+      rio_setsignals(port, ((ival & TIOCM_DTR) ? 1 : 0),
+                           ((ival & TIOCM_RTS) ? 1 : 0));
+    }
+    break;
+#endif
+  default:
+    rc = -ENOIOCTLCMD;
+    break;
+  }
+  func_exit();
+  return rc;
+}
+
+
+/* The throttle/unthrottle scheme for the Specialix card is different
+ * from other drivers and deserves some explanation. 
+ * The Specialix hardware takes care of XON/XOFF
+ * and CTS/RTS flow control itself.  This means that all we have to
+ * do when signalled by the upper tty layer to throttle/unthrottle is
+ * to make a note of it here.  When we come to read characters from the
+ * rx buffers on the card (rio_receive_chars()) we look to see if the
+ * upper layer can accept more (as noted here in rio_rx_throt[]). 
+ * If it can't we simply don't remove chars from the cards buffer. 
+ * When the tty layer can accept chars, we again note that here and when
+ * rio_receive_chars() is called it will remove them from the cards buffer.
+ * The card will notice that a ports buffer has drained below some low
+ * water mark and will unflow control the line itself, using whatever
+ * flow control scheme is in use for that port. -- Simon Allen
+ */
+
+static void rio_throttle (struct tty_struct * tty)
+{
+  struct Port *port = (struct Port *)tty->driver_data;
+  
+  func_enter();
+  /* If the port is using any type of input flow
+   * control then throttle the port.
+   */
+
+  if((tty->termios->c_cflag & CRTSCTS) || (I_IXOFF(tty)) ) {
+    port->State |= RIO_THROTTLE_RX;
+  }
+
+  func_exit();
+}
+
+
+static void rio_unthrottle (struct tty_struct * tty)
+{
+  struct Port *port = (struct Port *)tty->driver_data;
+
+  func_enter();
+  /* Always unthrottle even if flow control is not enabled on
+   * this port in case we disabled flow control while the port
+   * was throttled
+   */
+
+  port->State &= ~RIO_THROTTLE_RX;
+
+  func_exit();
+  return;
+}
+
+
+
+
+
+/* ********************************************************************** *
+ *                    Here are the initialization routines.               *
+ * ********************************************************************** */
+
+
+static struct vpd_prom *get_VPD_PROM (struct Host *hp)
+{
+  static struct vpd_prom vpdp;
+  char *p;
+  int i;
+
+  func_enter();
+  rio_dprintk (RIO_DEBUG_PROBE, "Going to verify vpd prom at %p.\n", 
+              hp->Caddr + RIO_VPD_ROM);
+
+  p = (char *) &vpdp;
+  for (i=0;i< sizeof (struct vpd_prom);i++)
+    *p++ = readb (hp->Caddr+RIO_VPD_ROM + i*2);
+      /* read_rio_byte (hp, RIO_VPD_ROM + i*2); */
+
+  /* Terminate the identifier string. 
+     *** requires one extra byte in struct vpd_prom *** */
+  *p++=0; 
+
+  if (rio_debug & RIO_DEBUG_PROBE)
+    my_hd ((char *)&vpdp, 0x20);
+  
+  func_exit();
+
+  return &vpdp;
+}
+
+static struct tty_operations rio_ops = {
+	.open  = riotopen,
+	.close = gs_close,
+	.write = gs_write,
+	.put_char = gs_put_char,
+	.flush_chars = gs_flush_chars,
+	.write_room = gs_write_room,
+	.chars_in_buffer = gs_chars_in_buffer,
+	.flush_buffer = gs_flush_buffer,
+	.ioctl = rio_ioctl,
+	.throttle = rio_throttle,
+	.unthrottle = rio_unthrottle,
+	.set_termios = gs_set_termios,
+	.stop = gs_stop,
+	.start = gs_start,
+	.hangup = gs_hangup,
+};
+
+static int rio_init_drivers(void)
+{
+	int error = -ENOMEM;
+
+	rio_driver = alloc_tty_driver(256);
+	if (!rio_driver)
+		goto out;
+	rio_driver2 = alloc_tty_driver(256);
+	if (!rio_driver2)
+		goto out1;
+
+	func_enter();
+
+	rio_driver->owner = THIS_MODULE;
+	rio_driver->driver_name = "specialix_rio";
+	rio_driver->name = "ttySR";
+	rio_driver->major = RIO_NORMAL_MAJOR0;
+	rio_driver->type = TTY_DRIVER_TYPE_SERIAL;
+	rio_driver->subtype = SERIAL_TYPE_NORMAL;
+	rio_driver->init_termios = tty_std_termios;
+	rio_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
+	rio_driver->flags = TTY_DRIVER_REAL_RAW;
+	tty_set_operations(rio_driver, &rio_ops);
+
+	rio_driver2->owner = THIS_MODULE;
+	rio_driver2->driver_name = "specialix_rio";
+	rio_driver2->name = "ttySR";
+	rio_driver2->major = RIO_NORMAL_MAJOR1;
+	rio_driver2->type = TTY_DRIVER_TYPE_SERIAL;
+	rio_driver2->subtype = SERIAL_TYPE_NORMAL;
+	rio_driver2->init_termios = tty_std_termios;
+	rio_driver2->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
+	rio_driver2->flags = TTY_DRIVER_REAL_RAW;
+	tty_set_operations(rio_driver2, &rio_ops);
+
+	rio_dprintk (RIO_DEBUG_INIT, "set_termios = %p\n", gs_set_termios);
+
+	if ((error = tty_register_driver(rio_driver)))
+		goto out2;
+	if ((error = tty_register_driver(rio_driver2)))
+		goto out3;
+	func_exit();
+	return 0;
+out3:
+	tty_unregister_driver(rio_driver);
+out2:
+	put_tty_driver(rio_driver2);
+out1:
+	put_tty_driver(rio_driver);
+out:
+	printk(KERN_ERR "rio: Couldn't register a rio driver, error = %d\n",
+	     error);
+	return 1;
+}
+
+
+static void * ckmalloc (int size)
+{
+  void *p;
+
+  p = kmalloc(size, GFP_KERNEL);
+  if (p) 
+    memset(p, 0, size);
+  return p;
+}
+
+
+
+static int rio_init_datastructures (void)
+{
+  int i;
+  struct Port *port;
+  func_enter();
+
+  /* Many drivers statically allocate the maximum number of ports
+     There is no reason not to allocate them dynamically. Is there? -- REW */
+  /* However, the RIO driver allows users to configure their first
+     RTA as the ports numbered 504-511. We therefore need to allocate 
+     the whole range. :-(   -- REW */
+  
+#define RI_SZ   sizeof(struct rio_info)
+#define HOST_SZ sizeof(struct Host)
+#define PORT_SZ sizeof(struct Port *)
+#define TMIO_SZ sizeof(struct termios *)
+  rio_dprintk (RIO_DEBUG_INIT, "getting : %d %d %d %d %d bytes\n", 
+               RI_SZ, 
+               RIO_HOSTS * HOST_SZ,
+               RIO_PORTS * PORT_SZ,
+               RIO_PORTS * TMIO_SZ,
+               RIO_PORTS * TMIO_SZ);
+  
+  if (!(p                  = ckmalloc (              RI_SZ))) goto free0;
+  if (!(p->RIOHosts        = ckmalloc (RIO_HOSTS * HOST_SZ))) goto free1;
+  if (!(p->RIOPortp        = ckmalloc (RIO_PORTS * PORT_SZ))) goto free2;
+  p->RIOConf = RIOConf;
+  rio_dprintk (RIO_DEBUG_INIT, "Got : %p %p %p\n", 
+               p, p->RIOHosts, p->RIOPortp);
+
+#if 1
+  for (i = 0; i < RIO_PORTS; i++) {
+    port = p->RIOPortp[i] = ckmalloc (sizeof (struct Port));
+    if (!port) {
+      goto free6;
+    }
+    rio_dprintk (RIO_DEBUG_INIT, "initing port %d (%d)\n", i, port->Mapped);
+    port->PortNum = i;
+    port->gs.magic = RIO_MAGIC;
+    port->gs.close_delay = HZ/2;
+    port->gs.closing_wait = 30 * HZ;
+    port->gs.rd = &rio_real_driver;
+    spin_lock_init(&port->portSem);
+    /*
+     * Initializing wait queue
+     */
+    init_waitqueue_head(&port->gs.open_wait);
+    init_waitqueue_head(&port->gs.close_wait);
+  }
+#else
+  /* We could postpone initializing them to when they are configured. */
+#endif
+
+
+  
+  if (rio_debug & RIO_DEBUG_INIT) {
+    my_hd (&rio_real_driver, sizeof (rio_real_driver));
+  }
+
+  
+  func_exit();
+  return 0;
+
+ free6:for (i--;i>=0;i--)
+        kfree (p->RIOPortp[i]);
+/*free5:
+ free4:
+ free3:*/kfree (p->RIOPortp);
+ free2:kfree (p->RIOHosts);
+ free1:
+  rio_dprintk (RIO_DEBUG_INIT, "Not enough memory! %p %p %p\n", 
+        	       p, p->RIOHosts, p->RIOPortp);
+  kfree(p);        	      
+ free0:
+  return -ENOMEM;
+}
+
+static void  __exit rio_release_drivers(void)
+{
+  func_enter();
+  tty_unregister_driver(rio_driver2);
+  tty_unregister_driver(rio_driver);
+  put_tty_driver(rio_driver2);
+  put_tty_driver(rio_driver);
+  func_exit();
+}
+
+
+#ifdef CONFIG_PCI
+ /* This was written for SX, but applies to RIO too...
+    (including bugs....)
+
+    There is another bit besides Bit 17. Turning that bit off
+    (on boards shipped with the fix in the eeprom) results in a 
+    hang on the next access to the card. 
+ */
+
+ /******************************************************** 
+ * Setting bit 17 in the CNTRL register of the PLX 9050  * 
+ * chip forces a retry on writes while a read is pending.*
+ * This is to prevent the card locking up on Intel Xeon  *
+ * multiprocessor systems with the NX chipset.    -- NV  *
+ ********************************************************/
+
+/* Newer cards are produced with this bit set from the configuration
+   EEprom.  As the bit is read/write for the CPU, we can fix it here,
+   if we detect that it isn't set correctly. -- REW */
+
+static void fix_rio_pci (struct pci_dev *pdev)
+{
+  unsigned int hwbase;
+  unsigned long rebase;
+  unsigned int t;
+
+#define CNTRL_REG_OFFSET        0x50
+#define CNTRL_REG_GOODVALUE     0x18260000
+
+  pci_read_config_dword(pdev, PCI_BASE_ADDRESS_0, &hwbase);
+  hwbase &= PCI_BASE_ADDRESS_MEM_MASK;
+  rebase =  (ulong) ioremap(hwbase, 0x80);
+  t = readl (rebase + CNTRL_REG_OFFSET);
+  if (t != CNTRL_REG_GOODVALUE) {
+    printk (KERN_DEBUG "rio: performing cntrl reg fix: %08x -> %08x\n", 
+            t, CNTRL_REG_GOODVALUE); 
+    writel (CNTRL_REG_GOODVALUE, rebase + CNTRL_REG_OFFSET);  
+  }
+  iounmap((char*) rebase);
+}
+#endif
+
+
+static int __init rio_init(void) 
+{
+  int found = 0;
+  int i;
+  struct Host *hp;
+  int retval;
+  struct vpd_prom *vpdp;
+  int okboard;
+
+#ifdef CONFIG_PCI
+  struct pci_dev *pdev = NULL;
+  unsigned int tint;
+  unsigned short tshort;
+#endif
+
+  func_enter();
+  rio_dprintk (RIO_DEBUG_INIT, "Initing rio module... (rio_debug=%d)\n", 
+	       rio_debug);
+
+  if (abs ((long) (&rio_debug) - rio_debug) < 0x10000) {
+    printk (KERN_WARNING "rio: rio_debug is an address, instead of a value. "
+            "Assuming -1. Was %x/%p.\n", rio_debug, &rio_debug);
+    rio_debug=-1;
+  }
+
+  if (misc_register(&rio_fw_device) < 0) {
+    printk(KERN_ERR "RIO: Unable to register firmware loader driver.\n");
+    return -EIO;
+  }
+
+  retval = rio_init_datastructures ();
+  if (retval < 0) {
+    misc_deregister(&rio_fw_device);
+    return retval;
+  }
+
+#ifdef CONFIG_PCI
+    /* First look for the JET devices: */
+    while ((pdev = pci_find_device (PCI_VENDOR_ID_SPECIALIX, 
+                                    PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8, 
+                                    pdev))) {
+       if (pci_enable_device(pdev)) continue;
+
+      /* Specialix has a whole bunch of cards with
+         0x2000 as the device ID. They say its because
+         the standard requires it. Stupid standard. */
+      /* It seems that reading a word doesn't work reliably on 2.0.
+         Also, reading a non-aligned dword doesn't work. So we read the
+         whole dword at 0x2c and extract the word at 0x2e (SUBSYSTEM_ID)
+         ourselves */
+      /* I don't know why the define doesn't work, constant 0x2c does --REW */ 
+      pci_read_config_dword (pdev, 0x2c, &tint);
+      tshort = (tint >> 16) & 0xffff;
+      rio_dprintk (RIO_DEBUG_PROBE, "Got a specialix card: %x.\n", tint);
+      if (tshort != 0x0100) {
+        rio_dprintk (RIO_DEBUG_PROBE, "But it's not a RIO card (%d)...\n", 
+                    tshort);
+        continue;
+      }
+      rio_dprintk (RIO_DEBUG_PROBE, "cp1\n");
+
+      pci_read_config_dword(pdev, PCI_BASE_ADDRESS_2, &tint);
+
+      hp = &p->RIOHosts[p->RIONumHosts];
+      hp->PaddrP =  tint & PCI_BASE_ADDRESS_MEM_MASK;
+      hp->Ivec = pdev->irq;
+      if (((1 << hp->Ivec) & rio_irqmask) == 0)
+              hp->Ivec = 0;
+      hp->Caddr = ioremap(p->RIOHosts[p->RIONumHosts].PaddrP, RIO_WINDOW_LEN);
+      hp->CardP	= (struct DpRam *) hp->Caddr;
+      hp->Type  = RIO_PCI;
+      hp->Copy  = rio_pcicopy; 
+      hp->Mode  = RIO_PCI_BOOT_FROM_RAM;
+      spin_lock_init(&hp->HostLock);
+      rio_reset_interrupt (hp);
+      rio_start_card_running (hp);
+
+      rio_dprintk (RIO_DEBUG_PROBE, "Going to test it (%p/%p).\n",
+                   (void *)p->RIOHosts[p->RIONumHosts].PaddrP,
+                   p->RIOHosts[p->RIONumHosts].Caddr);
+      if (RIOBoardTest( p->RIOHosts[p->RIONumHosts].PaddrP,
+                        p->RIOHosts[p->RIONumHosts].Caddr, 
+                        RIO_PCI, 0 ) == RIO_SUCCESS) {
+              rio_dprintk (RIO_DEBUG_INIT, "Done RIOBoardTest\n");
+              WBYTE(p->RIOHosts[p->RIONumHosts].ResetInt, 0xff);
+              p->RIOHosts[p->RIONumHosts].UniqueNum  =
+                      ((RBYTE(p->RIOHosts[p->RIONumHosts].Unique[0]) &0xFF)<< 0)|
+                      ((RBYTE(p->RIOHosts[p->RIONumHosts].Unique[1]) &0xFF)<< 8)|
+                      ((RBYTE(p->RIOHosts[p->RIONumHosts].Unique[2]) &0xFF)<<16)|
+                      ((RBYTE(p->RIOHosts[p->RIONumHosts].Unique[3]) &0xFF)<<24);
+              rio_dprintk (RIO_DEBUG_PROBE, "Hmm Tested ok, uniqid = %x.\n",
+                           p->RIOHosts[p->RIONumHosts].UniqueNum);
+              
+              fix_rio_pci (pdev);
+              p->RIOLastPCISearch = RIO_SUCCESS;
+              p->RIONumHosts++;
+              found++;
+      } else {
+              iounmap((char*) (p->RIOHosts[p->RIONumHosts].Caddr));
+      }
+    }
+    
+    /* Then look for the older PCI card.... : */
+
+  /* These older PCI cards have problems (only byte-mode access is
+     supported), which makes them a bit awkward to support. 
+     They also have problems sharing interrupts. Be careful. 
+     (The driver now refuses to share interrupts for these
+     cards. This should be sufficient).
+  */
+
+    /* Then look for the older RIO/PCI devices: */
+    while ((pdev = pci_find_device (PCI_VENDOR_ID_SPECIALIX, 
+                                    PCI_DEVICE_ID_SPECIALIX_RIO, 
+                                    pdev))) {
+       if (pci_enable_device(pdev)) continue;
+
+#ifdef CONFIG_RIO_OLDPCI
+      pci_read_config_dword(pdev, PCI_BASE_ADDRESS_0, &tint);
+
+      hp = &p->RIOHosts[p->RIONumHosts];
+      hp->PaddrP =  tint & PCI_BASE_ADDRESS_MEM_MASK;
+      hp->Ivec = pdev->irq;
+      if (((1 << hp->Ivec) & rio_irqmask) == 0) 
+      	hp->Ivec = 0;
+      hp->Ivec |= 0x8000; /* Mark as non-sharable */
+      hp->Caddr = ioremap(p->RIOHosts[p->RIONumHosts].PaddrP, RIO_WINDOW_LEN);
+      hp->CardP	= (struct DpRam *) hp->Caddr;
+      hp->Type  = RIO_PCI;
+      hp->Copy  = rio_pcicopy;
+      hp->Mode  = RIO_PCI_BOOT_FROM_RAM;
+      spin_lock_init(&hp->HostLock);
+
+      rio_dprintk (RIO_DEBUG_PROBE, "Ivec: %x\n", hp->Ivec);
+      rio_dprintk (RIO_DEBUG_PROBE, "Mode: %x\n", hp->Mode);
+
+      rio_reset_interrupt (hp);
+      rio_start_card_running (hp);
+       rio_dprintk (RIO_DEBUG_PROBE, "Going to test it (%p/%p).\n",
+                   (void *)p->RIOHosts[p->RIONumHosts].PaddrP,
+                   p->RIOHosts[p->RIONumHosts].Caddr);
+      if (RIOBoardTest( p->RIOHosts[p->RIONumHosts].PaddrP,
+                        p->RIOHosts[p->RIONumHosts].Caddr, 
+                        RIO_PCI, 0 ) == RIO_SUCCESS) {
+        WBYTE(p->RIOHosts[p->RIONumHosts].ResetInt, 0xff);
+        p->RIOHosts[p->RIONumHosts].UniqueNum  =
+          ((RBYTE(p->RIOHosts[p->RIONumHosts].Unique[0]) &0xFF)<< 0)|
+          ((RBYTE(p->RIOHosts[p->RIONumHosts].Unique[1]) &0xFF)<< 8)|
+          ((RBYTE(p->RIOHosts[p->RIONumHosts].Unique[2]) &0xFF)<<16)|
+          ((RBYTE(p->RIOHosts[p->RIONumHosts].Unique[3]) &0xFF)<<24);
+        rio_dprintk (RIO_DEBUG_PROBE, "Hmm Tested ok, uniqid = %x.\n",
+                   p->RIOHosts[p->RIONumHosts].UniqueNum);
+
+        p->RIOLastPCISearch = RIO_SUCCESS;
+        p->RIONumHosts++;
+        found++;
+      } else {
+        iounmap((char*) (p->RIOHosts[p->RIONumHosts].Caddr));
+      }
+#else
+      printk (KERN_ERR "Found an older RIO PCI card, but the driver is not "
+              "compiled to support it.\n");
+#endif
+    }
+#endif /* PCI */
+
+  /* Now probe for ISA cards... */
+  for (i=0;i<NR_RIO_ADDRS;i++) {
+    hp = &p->RIOHosts[p->RIONumHosts];
+    hp->PaddrP = rio_probe_addrs[i];
+    /* There was something about the IRQs of these cards. 'Forget what.--REW */
+    hp->Ivec = 0;
+    hp->Caddr = ioremap(p->RIOHosts[p->RIONumHosts].PaddrP, RIO_WINDOW_LEN);
+    hp->CardP = (struct DpRam *) hp->Caddr;
+    hp->Type = RIO_AT;
+    hp->Copy = rio_pcicopy; /* AT card PCI???? - PVDL
+                             * -- YES! this is now a normal copy. Only the 
+                             * old PCI card uses the special PCI copy. 
+                             * Moreover, the ISA card will work with the 
+                             * special PCI copy anyway. -- REW */
+    hp->Mode = 0;
+    spin_lock_init(&hp->HostLock);
+
+    vpdp = get_VPD_PROM (hp);
+    rio_dprintk (RIO_DEBUG_PROBE, "Got VPD ROM\n");
+    okboard = 0;
+    if ((strncmp (vpdp->identifier, RIO_ISA_IDENT, 16) == 0) ||
+        (strncmp (vpdp->identifier, RIO_ISA2_IDENT, 16) == 0) ||
+        (strncmp (vpdp->identifier, RIO_ISA3_IDENT, 16) == 0)) {
+      /* Board is present... */
+      if (RIOBoardTest (hp->PaddrP, 
+                        hp->Caddr, RIO_AT, 0) == RIO_SUCCESS) {
+        /* ... and feeling fine!!!! */
+        rio_dprintk (RIO_DEBUG_PROBE, "Hmm Tested ok, uniqid = %x.\n",
+                   p->RIOHosts[p->RIONumHosts].UniqueNum);
+        if (RIOAssignAT(p, hp->PaddrP, hp->Caddr, 0)) {        
+          rio_dprintk (RIO_DEBUG_PROBE, "Hmm Tested ok, host%d uniqid = %x.\n",
+                       p->RIONumHosts, 
+                       p->RIOHosts[p->RIONumHosts-1].UniqueNum);
+          okboard++;
+          found++;
+        }
+      }
+
+    if (!okboard)
+      iounmap ((char*) (hp->Caddr));
+    }
+  }
+
+
+  for (i=0;i<p->RIONumHosts;i++) {
+    hp = &p->RIOHosts[i];
+    if (hp->Ivec) {
+      int mode = SA_SHIRQ;
+      if (hp->Ivec & 0x8000) {mode = 0; hp->Ivec &= 0x7fff;}
+      rio_dprintk (RIO_DEBUG_INIT, "Requesting interrupt hp: %p rio_interrupt: %d Mode: %x\n", hp,hp->Ivec, hp->Mode);
+      retval = request_irq (hp->Ivec, rio_interrupt, mode, "rio", hp);
+      rio_dprintk (RIO_DEBUG_INIT, "Return value from request_irq: %d\n", retval);
+      if (retval) {
+              printk(KERN_ERR "rio: Cannot allocate irq %d.\n", hp->Ivec);
+              hp->Ivec = 0;
+      }
+      rio_dprintk (RIO_DEBUG_INIT, "Got irq %d.\n", hp->Ivec);
+      if (hp->Ivec != 0){
+              rio_dprintk (RIO_DEBUG_INIT, "Enabling interrupts on rio card.\n"); 
+              hp->Mode |= RIO_PCI_INT_ENABLE;
+      } else
+              hp->Mode &= !RIO_PCI_INT_ENABLE;
+      rio_dprintk (RIO_DEBUG_INIT, "New Mode: %x\n", hp->Mode);
+      rio_start_card_running (hp);
+    }
+    /* Init the timer "always" to make sure that it can safely be 
+       deleted when we unload... */
+
+    init_timer (&hp->timer);
+    if (!hp->Ivec) {
+      rio_dprintk (RIO_DEBUG_INIT, "Starting polling at %dj intervals.\n", 
+                   rio_poll);
+      hp->timer.data = i;
+      hp->timer.function = rio_pollfunc;
+      hp->timer.expires = jiffies + rio_poll;
+      add_timer (&hp->timer);
+    }
+  }
+
+  if (found) {
+    rio_dprintk (RIO_DEBUG_INIT, "rio: total of %d boards detected.\n", found);
+    rio_init_drivers ();
+  } else {
+    /* deregister the misc device we created earlier */
+    misc_deregister(&rio_fw_device);
+  }
+
+  func_exit();
+  return found?0:-EIO;
+}
+
+
+static void __exit rio_exit (void)
+{
+  int i; 
+  struct Host *hp;
+  
+  func_enter();
+
+  for (i=0,hp=p->RIOHosts;i<p->RIONumHosts;i++, hp++) {
+    RIOHostReset (hp->Type, hp->CardP, hp->Slot);
+    if (hp->Ivec) {
+      free_irq (hp->Ivec, hp);
+      rio_dprintk (RIO_DEBUG_INIT, "freed irq %d.\n", hp->Ivec);
+    }
+    /* It is safe/allowed to del_timer a non-active timer */
+    del_timer (&hp->timer);
+  }
+
+  if (misc_deregister(&rio_fw_device) < 0) {
+    printk (KERN_INFO "rio: couldn't deregister control-device\n");
+  }
+
+
+  rio_dprintk (RIO_DEBUG_CLEANUP, "Cleaning up drivers\n");
+
+  rio_release_drivers ();
+
+  /* Release dynamically allocated memory */
+  kfree (p->RIOPortp);
+  kfree (p->RIOHosts);
+  kfree (p);
+
+  func_exit();
+}
+
+module_init(rio_init);
+module_exit(rio_exit);
+
+/*
+ * Anybody who knows why this doesn't work for me, please tell me -- REW.
+ * Snatched from scsi.c (fixed one spelling error):
+ * Overrides for Emacs so that we follow Linus' tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local Variables:
+ * c-indent-level: 4
+ * c-brace-imaginary-offset: 0
+ * c-brace-offset: -4
+ * c-argdecl-indent: 4
+ * c-label-offset: -4
+ * c-continued-statement-offset: 4
+ * c-continued-brace-offset: 0
+ * indent-tabs-mode: nil
+ * tab-width: 8
+ * End:
+ */
+