patch-2.3.99-pre7 linux/drivers/char/rio/rio_linux.c
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- Lines: 1558
- Date:
Wed May 10 16:56:44 2000
- Orig file:
v2.3.99-pre6/linux/drivers/char/rio/rio_linux.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.3.99-pre6/linux/drivers/char/rio/rio_linux.c linux/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:
+ */
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)