Merge with Linux 2.3.99-pre7 and various other bits.

1 files changed, 1557 insertions, 0 deletions

diff --git a/drivers/char/rio/rio_linux.c b/drivers/char/rio/rio_linux.c
new file mode 100644
index 000000000..0adc6efed
--- /dev/null
+++ b/drivers/char/rio/rio_linux.c
@@ -0,0 +1,1557 @@
+
+/* 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
+ *
+ * */
+
+
+#define RCS_ID "$Id: rio.c,v 1.1 1999/07/11 10:13:54 wolff Exp wolff $"
+#define RCS_REV "$Revision: 1.1 $"
+
+
+#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/tqueue.h>
+#include <linux/version.h>
+#include <linux/pci.h>
+#include <linux/malloc.h>
+#include <linux/miscdevice.h>
+
+#include <linux/compatmac.h>
+#include <linux/generic_serial.h>
+
+
+#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.... */
+
+
+/* ************************************************************** */
+/* * This section can be removed when 2.0 becomes outdated....  * */
+/* ************************************************************** */
+
+#if LINUX_VERSION_CODE < 0x020100    /* Less than 2.1.0 */
+#define TWO_ZERO
+#else
+#if LINUX_VERSION_CODE < 0x020209   /* less than 2.2.x */
+#warning "Please use a recent 2.2.x kernel. "
+#endif
+#endif
+
+
+#ifdef TWO_ZERO
+
+/* Here is the section that makes the 2.2 compatible driver source 
+   work for 2.0 too! We mostly try to adopt the "new thingies" from 2.2, 
+   and provide for compatibility stuff here if possible. */
+
+#include <linux/bios32.h>
+
+#define Get_user(a,b)                a = get_user(b)
+#define Put_user(a,b)                0,put_user(a,b)
+#define copy_to_user(a,b,c)          memcpy_tofs(a,b,c)
+
+static inline int copy_from_user(void *to,const void *from, int c) 
+{
+  memcpy_fromfs(to, from, c);
+  return 0;
+}
+
+#define pci_present                  pcibios_present
+#define pci_read_config_word         pcibios_read_config_word
+#define pci_read_config_dword        pcibios_read_config_dword
+
+static inline unsigned char get_irq (unsigned char bus, unsigned char fn)
+{
+  unsigned char t; 
+  pcibios_read_config_byte (bus, fn, PCI_INTERRUPT_LINE, &t);
+  return t;
+}
+
+static inline void *ioremap(unsigned long base, long length)
+{
+  if (base < 0x100000) return (void *)base;
+  return vremap (base, length);
+}
+
+#define my_iounmap(x, b)             (((long)x<0x100000)?0:vfree ((void*)x))
+
+#define capable(x)                   suser()
+
+#define queue_task                   queue_task_irq_off
+#define tty_flip_buffer_push(tty)    queue_task(&tty->flip.tqueue, &tq_timer)
+#define signal_pending(current)      (current->signal & ~current->blocked)
+#define schedule_timeout(to)         do {current->timeout = jiffies + (to);schedule ();} while (0)
+#define time_after(t1,t2)            (((long)t1-t2) > 0)
+
+
+#define test_and_set_bit(nr, addr)   set_bit(nr, addr)
+#define test_and_clear_bit(nr, addr) clear_bit(nr, addr)
+
+/* Not yet implemented on 2.0 */
+#define ASYNC_SPD_SHI  -1
+#define ASYNC_SPD_WARP -1
+
+
+/* Ugly hack: the driver_name doesn't exist in 2.0.x . So we define it
+   to the "name" field that does exist. As long as the assignments are
+   done in the right order, there is nothing to worry about. */
+#define driver_name           name 
+
+/* Should be in a header somewhere. They are in tty.h on 2.2 */
+#define TTY_HW_COOK_OUT       14 /* Flag to tell ntty what we can handle */
+#define TTY_HW_COOK_IN        15 /* in hardware - output and input       */
+
+/* The return type of a "close" routine. */
+#define INT                   void
+#define NO_ERROR              /* Nothing */
+
+#else
+
+/* The 2.2.x compatibility section. */
+#include <asm/uaccess.h>
+
+#define Get_user(a,b)         get_user(a,b)
+#define Put_user(a,b)         put_user(a,b)
+#define get_irq(pdev)         pdev->irq
+
+#define INT                   int
+#define NO_ERROR              0              
+
+#define my_iounmap(x,b)       (iounmap((char *)(b)))
+
+#endif
+
+/* ************************************************************** */
+/* *                End of compatibility section..              * */
+/* ************************************************************** */
+
+
+
+/* Why the hell am I defining these here? */
+#define RIO_TYPE_NORMAL 1
+#define RIO_TYPE_CALLOUT 2
+
+#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_CALLOUT_MAJOR0 155
+#define RIO_NORMAL_MAJOR1  156
+#define RIO_CALLOUT_MAJOR1 157
+#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 */
+  /* 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_fw_open(struct inode *inode, struct file *filp);
+static INT rio_fw_release(struct inode *inode, struct file *filp);
+static int rio_init_drivers(void);
+
+
+void my_hd (void *addr, int len);
+
+
+
+static struct tty_driver rio_driver, rio_callout_driver;
+static struct tty_driver rio_driver2, rio_callout_driver2;
+
+static struct tty_struct * rio_table[RIO_NPORTS] = { NULL, };
+static struct termios ** rio_termios;
+static struct termios ** rio_termios_locked;
+
+/* 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;
+
+/* struct rio_board boards[RIO_HOSTS]; */
+struct rio_port *rio_ports;
+
+int rio_refcount;
+int rio_initialized = 0;
+int rio_nports = 0;
+int rio_debug = 0;
+
+
+/* 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.
+*/
+int rio_poll = 1;
+
+
+/* These are the only open spaces in my computer. Yours may have more
+   or less.... */
+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;
+
+#ifndef TWO_ZERO
+#ifdef MODULE
+MODULE_PARM(rio_poll, "i");
+MODULE_PARM(rio_debug, "i");
+MODULE_PARM(rio_irqmask, "i");
+#endif
+#endif
+
+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
+};
+
+
+/* 
+   This driver can spew a whole lot of debugging output at you. If you
+   need maximum performance, you should disable the DEBUG define. To
+   aid in debugging in the field, I'm leaving the compile-time debug
+   features enabled, and disable them "runtime". That allows me to
+   instruct people with problems to enable debugging without requiring
+   them to recompile... 
+*/
+#define DEBUG
+
+#ifdef DEBUG
+#define rio_dprintk(f, str...) if (rio_debug & f) printk (str)
+#else
+#define rio_dprintk(f, str...) /* nothing */
+#endif
+
+
+#define func_enter() rio_dprintk (RIO_DEBUG_FLOW, "rio: enter " __FUNCTION__ "\n")
+#define func_exit()  rio_dprintk (RIO_DEBUG_FLOW, "rio: exit  " __FUNCTION__ "\n")
+
+#define func_enter2() rio_dprintk (RIO_DEBUG_FLOW, "rio: enter " __FUNCTION__ \
+                                  "(port %d)\n", port->line)
+
+
+
+
+/* 
+ *  Firmware loader driver specific routines
+ *
+ */
+
+static struct file_operations rio_fw_fops = {
+	NULL,	/*	lseek	*/
+	NULL,	/*	read	*/
+	NULL,	/*	write	*/
+	NULL,	/*	readdir	*/
+	NULL,	/*	select	*/
+	rio_fw_ioctl,
+	NULL,	/*	mmap	*/
+	rio_fw_open,
+#ifndef TWO_ZERO
+	NULL,	/*	flush	*/
+#endif
+	rio_fw_release,
+	NULL,	/*	fsync	*/
+	NULL,	/*	fasync	*/
+	NULL,	/*	check_media_change	*/
+	NULL,	/*	revalidate	*/
+};
+
+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,
+				    kdev_t device, 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, kdevname(device), routine);
+    return 1;
+  }
+  if (port->magic != RIO_MAGIC) {
+    printk(badmagic, kdevname(device), routine);
+    return 1;
+  }
+
+  return 0;
+}
+#else
+#define rio_paranoia_check(a,b,c) 0
+#endif
+
+
+#ifdef DEBUG
+void my_hd (void *ad, int len)
+{
+  int i, j, ch;
+  unsigned char *addr = ad;
+  
+  for (i=0;i<len;i+=16) {
+    printk ("%08x ", (int) addr+i);
+    for (j=0;j<16;j++) {
+      printk ("%02x %s", addr[j+i], (j==7)?" ":"");
+    }
+    for (j=0;j<16;j++) {
+      ch = addr[j+i];
+      printk ("%c", (ch < 0x20)?'.':((ch > 0x7f)?'.':ch));
+    }
+    printk ("\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);  
+  current->state = TASK_INTERRUPTIBLE;
+  schedule_timeout(njiffies);
+  current->state = TASK_RUNNING;
+  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);  
+  current->state = TASK_UNINTERRUPTIBLE;
+  schedule_timeout(njiffies);
+  current->state = TASK_RUNNING;
+  func_exit();
+  return !RIO_FAIL;
+}
+
+
+int rio_minor (kdev_t device)
+{
+  return MINOR (device) + 
+    256 * ((MAJOR (device) == RIO_NORMAL_MAJOR1) ||
+	   (MAJOR (device) == RIO_CALLOUT_MAJOR1));
+}
+
+
+int rio_ismodem (kdev_t device)
+{
+  return (MAJOR (device) != RIO_NORMAL_MAJOR0) &&
+         (MAJOR (device) != RIO_NORMAL_MAJOR1);
+}
+
+
+void rio_udelay (int usecs)
+{
+  udelay (usecs);
+}
+
+
+void rio_inc_mod_count (void)
+{
+  func_enter ();
+  MOD_INC_USE_COUNT; 
+  func_exit ();
+}
+
+
+void rio_dec_mod_count (void)
+{
+  func_enter ();
+  MOD_DEC_USE_COUNT; 
+  func_exit ();
+}
+
+
+static int rio_set_real_termios (void *ptr)
+{
+  int rv;
+  func_enter();
+
+  rv = RIOParam( (struct Port *) ptr, CONFIG, 0, 1);
+
+  func_exit ();
+
+  return rv;
+}
+
+
+void rio_reset_interrupt (struct Host *HostP)
+{
+  switch( HostP->Type ) {
+  case RIO_AT:
+  case RIO_MCA:
+  case RIO_PCI:
+    WBYTE(HostP->ResetInt , 0xff);
+  }
+}
+
+
+static void rio_interrupt (int irq, void *ptr, struct pt_regs *regs)
+{
+  struct Host *HostP;
+
+  HostP = &p->RIOHosts[(long)ptr];
+  /*   func_enter ();  */
+  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 wont
+       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
+
+  if (HostP->Ivec == irq) {
+    /* Tell the card we've noticed the interrupt. */
+    rio_reset_interrupt (HostP);
+  }
+
+  if ((HostP->Flags & RUN_STATE) != RC_RUNNING) return;
+
+  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;
+  }
+
+  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 ();  */
+}
+
+
+static void rio_pollfunc (unsigned long data)
+{
+  func_enter ();
+
+  rio_interrupt (0, (void *)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) 
+{
+  func_enter();
+
+#if 0
+  port->gs.flags &= ~ GS_ACTIVE;
+  if (!port->gs.tty) {
+    printk ("No tty.\n");
+    return;
+  }
+  if (!port->gs.tty->termios) {
+    printk ("No termios.\n");
+    return;
+  }
+  if (port->gs.tty->termios->c_cflag & HUPCL) {
+    rio_setsignals (port, 0, 0);
+  }
+#endif
+
+  func_exit();
+}
+
+
+
+/* ********************************************************************** *
+ *                Here are the routines that actually                     *
+ *               interface with the rest of the system                    *
+ * ********************************************************************** */
+
+
+static int rio_fw_open(struct inode *inode, struct file *filp)
+{
+  func_enter ();
+  rio_inc_mod_count ();
+  func_exit ();
+  return 0;
+}
+
+
+static INT rio_fw_release(struct inode *inode, struct file *filp)
+{
+  func_enter ();
+  rio_dec_mod_count ();
+  func_exit ();
+  return NO_ERROR;
+}
+
+
+/* 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)
+{
+  func_enter ();
+  /* rio_dec_mod_count (); */
+  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)
+{
+  func_enter ();
+  riotclose (ptr);
+  rio_dec_mod_count ();
+  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, suser ());
+
+  func_exit ();
+  return rc;
+}
+
+
+static int rio_ioctl (struct tty_struct * tty, struct file * filp, 
+                     unsigned int cmd, unsigned long arg)
+{
+#if 0
+  int rc;
+  struct rio_port *port = tty->driver_data;
+  int ival;
+
+  /* func_enter2(); */
+
+
+  rc  = 0;
+  switch (cmd) {
+  case TIOCGSOFTCAR:
+    rc = Put_user(((tty->termios->c_cflag & CLOCAL) ? 1 : 0),
+                  (unsigned int *) arg);
+    break;
+  case TIOCSSOFTCAR:
+    if ((rc = verify_area(VERIFY_READ, (void *) arg,
+                          sizeof(int))) == 0) {
+      Get_user(ival, (unsigned int *) arg);
+      tty->termios->c_cflag =
+        (tty->termios->c_cflag & ~CLOCAL) |
+        (ival ? CLOCAL : 0);
+    }
+    break;
+  case TIOCGSERIAL:
+    if ((rc = verify_area(VERIFY_WRITE, (void *) arg,
+                          sizeof(struct serial_struct))) == 0)
+      gs_getserial(&port->gs, (struct serial_struct *) arg);
+    break;
+  case TIOCSSERIAL:
+    if ((rc = verify_area(VERIFY_READ, (void *) arg,
+                          sizeof(struct serial_struct))) == 0)
+      rc = gs_setserial(&port->gs, (struct serial_struct *) arg);
+    break;
+  case TIOCMGET:
+    if ((rc = verify_area(VERIFY_WRITE, (void *) arg,
+                          sizeof(unsigned int))) == 0) {
+      ival = rio_getsignals(port);
+      put_user(ival, (unsigned int *) arg);
+    }
+    break;
+  case TIOCMBIS:
+    if ((rc = verify_area(VERIFY_READ, (void *) arg,
+                          sizeof(unsigned int))) == 0) {
+      Get_user(ival, (unsigned int *) arg);
+      rio_setsignals(port, ((ival & TIOCM_DTR) ? 1 : -1),
+                           ((ival & TIOCM_RTS) ? 1 : -1));
+    }
+    break;
+  case TIOCMBIC:
+    if ((rc = verify_area(VERIFY_READ, (void *) arg,
+                          sizeof(unsigned int))) == 0) {
+      Get_user(ival, (unsigned int *) arg);
+      rio_setsignals(port, ((ival & TIOCM_DTR) ? 0 : -1),
+                           ((ival & TIOCM_RTS) ? 0 : -1));
+    }
+    break;
+  case TIOCMSET:
+    if ((rc = verify_area(VERIFY_READ, (void *) arg,
+                          sizeof(unsigned int))) == 0) {
+      Get_user(ival, (unsigned int *) arg);
+      rio_setsignals(port, ((ival & TIOCM_DTR) ? 1 : 0),
+                           ((ival & TIOCM_RTS) ? 1 : 0));
+    }
+    break;
+
+  default:
+    rc = -ENOIOCTLCMD;
+    break;
+  }
+  /* func_exit(); */
+  return rc;
+#else
+  return -ENOIOCTLCMD;
+#endif
+
+}
+
+
+/* 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.               *
+ * ********************************************************************** */
+
+
+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);
+
+  return &vpdp;
+}
+
+
+
+static int rio_init_drivers(void)
+{
+  int error;
+  
+  func_enter();
+
+  memset(&rio_driver, 0, sizeof(rio_driver));
+  rio_driver.magic = TTY_DRIVER_MAGIC;
+  rio_driver.driver_name = "specialix_rio";
+  rio_driver.name = "ttySR";
+  rio_driver.major = RIO_NORMAL_MAJOR0;
+  rio_driver.num = 256;
+  rio_driver.type = TTY_DRIVER_TYPE_SERIAL;
+  rio_driver.subtype = RIO_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;
+  rio_driver.refcount = &rio_refcount;
+  rio_driver.table = rio_table;
+  rio_driver.termios = rio_termios;
+  rio_driver.termios_locked = rio_termios_locked;
+
+  rio_driver.open  = riotopen;
+  rio_driver.close = gs_close;
+  rio_driver.write = gs_write;
+  rio_driver.put_char = gs_put_char;
+  rio_driver.flush_chars = gs_flush_chars;
+  rio_driver.write_room = gs_write_room;
+  rio_driver.chars_in_buffer = gs_chars_in_buffer;
+  rio_driver.flush_buffer = gs_flush_buffer;
+  rio_driver.ioctl = rio_ioctl;
+  rio_driver.throttle = rio_throttle;
+  rio_driver.unthrottle = rio_unthrottle;
+  rio_driver.set_termios = gs_set_termios;
+  rio_driver.stop = gs_stop;
+  rio_driver.start = gs_start;
+  rio_driver.hangup = gs_hangup;
+
+  rio_driver2 = rio_driver;
+  rio_driver.major = RIO_NORMAL_MAJOR1;
+
+  rio_callout_driver = rio_driver;
+  rio_callout_driver.name = "cusr";
+  rio_callout_driver.major = RIO_CALLOUT_MAJOR0;
+  rio_callout_driver.subtype = RIO_TYPE_CALLOUT;
+
+  rio_callout_driver2 = rio_callout_driver;
+  rio_callout_driver2.major = RIO_CALLOUT_MAJOR1;
+
+  rio_dprintk (RIO_DEBUG_INIT, "set_termios = %p\n", gs_set_termios);
+
+  if ((error = tty_register_driver(&rio_driver))) goto bad1;
+  if ((error = tty_register_driver(&rio_driver2))) goto bad2;
+  if ((error = tty_register_driver(&rio_callout_driver))) goto bad3;
+  if ((error = tty_register_driver(&rio_callout_driver2))) goto bad4;
+
+  func_exit();
+  return 0;
+  /* 
+ bad5:tty_unregister_driver (&rio_callout_driver2); */
+ bad4:tty_unregister_driver (&rio_callout_driver);
+ bad3:tty_unregister_driver (&rio_driver2);
+ bad2:tty_unregister_driver (&rio_driver);
+ bad1: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;
+  if (!(rio_termios        = ckmalloc (RIO_PORTS * TMIO_SZ))) goto free3;
+  if (!(rio_termios_locked = ckmalloc (RIO_PORTS * TMIO_SZ))) goto free4;
+  p->RIOConf = RIOConf;
+  rio_dprintk (RIO_DEBUG_INIT, "Got : %p %p %p %p %p\n", 
+               p, p->RIOHosts, p->RIOPortp, rio_termios, rio_termios);
+
+  /* Adjust the values in the "driver" */
+  rio_driver.termios = rio_termios;
+  rio_driver.termios_locked = rio_termios_locked;
+  
+#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.callout_termios = tty_std_termios;
+    port->gs.normal_termios  = tty_std_termios;
+    port->gs.magic = RIO_MAGIC;
+    port->gs.close_delay = HZ/2;
+    port->gs.closing_wait = 30 * HZ;
+    port->gs.rd = &rio_real_driver;
+  }
+#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: */
+       kfree (rio_termios_locked); 
+ free4:kfree (rio_termios);
+ free3:kfree (p->RIOPortp);
+ free2:kfree (p->RIOHosts);
+ free1:kfree (p);
+ free0:
+  rio_dprintk (RIO_DEBUG_INIT, "Not enough memory! %p %p %p %p %p\n", 
+               p, p->RIOHosts, p->RIOPortp, rio_termios, rio_termios);
+  return -ENOMEM;
+}
+
+
+#ifdef MODULE
+static void rio_release_drivers(void)
+{
+  func_enter();
+  tty_unregister_driver (&rio_callout_driver2);
+  tty_unregister_driver (&rio_callout_driver);
+  tty_unregister_driver (&rio_driver2);
+  tty_unregister_driver (&rio_driver);
+  func_exit();
+}
+#endif
+
+#ifdef TWO_ZERO
+#define PDEV unsigned char pci_bus, unsigned pci_fun
+#define pdev pci_bus, pci_fun
+#else
+#define PDEV   struct pci_dev *pdev
+#endif
+
+
+#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 */
+
+void fix_rio_pci (PDEV)
+{
+  unsigned int hwbase;
+  unsigned long rebase;
+  unsigned int t;
+
+#define CNTRL_REG_OFFSET        0x50
+#define CNTRL_REG_GOODVALUE     0x00260000
+
+  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);  
+  }
+  my_iounmap (hwbase, rebase);
+}
+#endif
+
+
+#ifdef MODULE
+#define rio_init init_module
+#endif
+
+extern int gs_debug;
+
+int rio_init(void) 
+{
+  int found = 0;
+  int i;
+  struct Host *hp;
+  int retval;
+  struct vpd_prom *vpdp;
+  int okboard;
+
+
+#ifdef CONFIG_PCI
+#ifndef TWO_ZERO
+  struct pci_dev *pdev = NULL;
+#else
+  unsigned char pci_bus, pci_fun;
+  /* in 2.2.x pdev is a pointer defining a PCI device. In 2.0 its the bus/fn */
+#endif
+  unsigned int tint;
+  unsigned short tshort;
+#endif
+
+  func_enter();
+  rio_dprintk (RIO_DEBUG_INIT, "Initing rio module... (rio_debug=%d)\n", 
+	       rio_debug);
+  gs_debug = rio_debug >> 24;
+
+  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;
+  }
+
+  retval = rio_init_datastructures ();
+  if (retval < 0) return retval;
+
+#ifdef CONFIG_PCI
+  if (pci_present ()) {
+    /* First look for the JET devices: */
+#ifndef TWO_ZERO
+    while ((pdev = pci_find_device (PCI_VENDOR_ID_SPECIALIX, 
+                                    PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8, 
+                                    pdev))) {
+#else
+    for (i=0;i< RIO_NBOARDS;i++) {
+      if (pcibios_find_device (PCI_VENDOR_ID_SPECIALIX, 
+			       PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8, i,
+			       &pci_bus, &pci_fun)) break;
+#endif
+      /* 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);
+      /* rio_dprintk (RIO_DEBUG_PROBE, "pdev = %d/%d  (%x)\n", pdev, 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 = get_irq (pdev);
+      if (((1 << hp->Ivec) & rio_irqmask) == 0) hp->Ivec = 0;
+      hp->CardP	= (struct DpRam *)
+      hp->Caddr = ioremap(p->RIOHosts[p->RIONumHosts].PaddrP, RIO_WINDOW_LEN);
+      hp->Type  = RIO_PCI;
+      hp->Copy  = rio_pcicopy; 
+      hp->Mode  = RIO_PCI_DEFAULT_MODE;
+ 
+      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);
+
+#if 1
+        fix_rio_pci (pdev);
+#endif
+        p->RIOLastPCISearch = RIO_SUCCESS;
+        p->RIONumHosts++;
+        found++;
+      } else {
+        my_iounmap (p->RIOHosts[p->RIONumHosts].PaddrP, 
+                    p->RIOHosts[p->RIONumHosts].Caddr);
+      }
+
+#ifdef TWO_ZERO
+    }  /* We have two variants with the opening brace, so to prevent */
+#else
+    }  /* Emacs from getting confused we have two closing braces too. */
+#endif
+    
+
+    /* Then look for the older PCI card.... : */
+#ifndef TWO_ZERO
+
+  /* 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))) {
+#else
+    for (i=0;i< RIO_NBOARDS;i++) {
+      if (pcibios_find_device (PCI_VENDOR_ID_SPECIALIX, 
+			       PCI_DEVICE_ID_SPECIALIX_RIO, i,
+			       &pci_bus, &pci_fun)) break;
+#endif
+
+#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 = get_irq (pdev);
+      if (((1 << hp->Ivec) & rio_irqmask) == 0) hp->Ivec = 0;
+      hp->Ivec |= 0x8000; /* Mark as non-sharable */
+      hp->CardP	= (struct DpRam *)
+      hp->Caddr = ioremap(p->RIOHosts[p->RIONumHosts].PaddrP, RIO_WINDOW_LEN);
+      hp->Type  = RIO_PCI;
+      hp->Copy  = rio_pcicopy;
+      hp->Mode  = RIO_PCI_DEFAULT_MODE;
+ 
+      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 {
+        my_iounmap (p->RIOHosts[p->RIONumHosts].PaddrP, 
+                    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
+#ifdef TWO_ZERO
+    }  /* We have two variants with the opening brace, so to prevent */
+#else
+    }  /* Emacs from getting confused we have two closing braces too. */
+#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->CardP = (struct DpRam *)
+    hp->Caddr = ioremap(p->RIOHosts[p->RIONumHosts].PaddrP, RIO_WINDOW_LEN);
+    hp->Type = RIO_AT;
+    hp->Copy = rio_pcicopy;
+    hp->Mode = 0;
+
+    vpdp = get_VPD_PROM (hp);
+
+    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)
+      my_iounmap (hp->PaddrP, 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;}
+      if (request_irq (hp->Ivec, rio_interrupt, mode, "rio", (void *)i)) {
+        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);
+    }
+    /* 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) {
+    printk (KERN_INFO "rio: total of %d boards detected.\n", found);
+
+    if (misc_register(&rio_fw_device) < 0) {
+      printk(KERN_ERR "RIO: Unable to register firmware loader driver.\n");
+      return -EIO;
+    }
+    rio_init_drivers ();
+  }
+
+  func_exit();
+  return found?0:-EIO;
+}
+
+
+#ifdef MODULE
+void cleanup_module(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, (void *)i);
+      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 (rio_termios_locked); 
+  kfree (rio_termios);
+  kfree (p->RIOPortp);
+  kfree (p->RIOHosts);
+  kfree (p);
+
+  func_exit();
+}
+#endif
+
+
+
+/*
+ * 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:
+ */