2 /* rio_linux.c -- Linux driver for the Specialix RIO series cards.
5 * (C) 1999 R.E.Wolff@BitWizard.nl
7 * Specialix pays for the development and support of this driver.
8 * Please DO contact support@specialix.co.uk if you require
9 * support. But please read the documentation (rio.txt) first.
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License as
15 * published by the Free Software Foundation; either version 2 of
16 * the License, or (at your option) any later version.
18 * This program is distributed in the hope that it will be
19 * useful, but WITHOUT ANY WARRANTY; without even the implied
20 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
21 * PURPOSE. See the GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public
24 * License along with this program; if not, write to the Free
25 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
30 * Revision 1.1 1999/07/11 10:13:54 wolff
35 #include <linux/module.h>
36 #include <linux/config.h>
37 #include <linux/kdev_t.h>
39 #include <linux/kernel.h>
40 #include <linux/sched.h>
41 #include <linux/ioport.h>
42 #include <linux/interrupt.h>
43 #include <linux/errno.h>
44 #include <linux/tty.h>
45 #include <linux/tty_flip.h>
47 #include <linux/serial.h>
48 #include <linux/fcntl.h>
49 #include <linux/major.h>
50 #include <linux/delay.h>
51 #include <linux/pci.h>
52 #include <linux/slab.h>
53 #include <linux/miscdevice.h>
54 #include <linux/init.h>
56 #include <linux/generic_serial.h>
57 #include <asm/uaccess.h>
59 #if BITS_PER_LONG != 32
60 # error FIXME: this driver only works on 32-bit platforms
63 #include "linux_compat.h"
100 #include "rio_linux.h"
102 /* I don't think that this driver can handle more than 512 ports on
103 one machine. Specialix specifies max 4 boards in one machine. I don't
104 know why. If you want to try anyway you'll have to increase the number
105 of boards in rio.h. You'll have to allocate more majors if you need
106 more than 512 ports.... */
108 #ifndef RIO_NORMAL_MAJOR0
109 /* This allows overriding on the compiler commandline, or in a "major.h"
110 include or something like that */
111 #define RIO_NORMAL_MAJOR0 154
112 #define RIO_NORMAL_MAJOR1 156
115 #ifndef PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8
116 #define PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8 0x2000
119 #ifndef RIO_WINDOW_LEN
120 #define RIO_WINDOW_LEN 0x10000
124 /* Configurable options:
125 (Don't be too sure that it'll work if you toggle them) */
127 /* Am I paranoid or not ? ;-) */
128 #undef RIO_PARANOIA_CHECK
131 /* 20 -> 2000 per second. The card should rate-limit interrupts at 1000
132 Hz, but it is user configurable. I don't recommend going above 1000
133 Hz. The interrupt ratelimit might trigger if the interrupt is
134 shared with a very active other device.
135 undef this if you want to disable the check....
137 #define IRQ_RATE_LIMIT 200
140 /* Not implemented */
142 * The following defines are mostly for testing purposes. But if you need
143 * some nice reporting in your syslog, you can define them also.
145 #define RIO_REPORT_FIFO
146 #define RIO_REPORT_OVERRUN
150 /* These constants are derived from SCO Source */
154 /* locator */ "RIO Config here",
155 /* startuptime */ HZ*2, /* how long to wait for card to run */
156 /* slowcook */ 0, /* TRUE -> always use line disc. */
157 /* intrpolltime */ 1, /* The frequency of OUR polls */
158 /* breakinterval */ 25, /* x10 mS XXX: units seem to be 1ms not 10! -- REW*/
159 /* timer */ 10, /* mS */
160 /* RtaLoadBase */ 0x7000,
161 /* HostLoadBase */ 0x7C00,
162 /* XpHz */ 5, /* number of Xprint hits per second */
163 /* XpCps */ 120, /* Xprint characters per second */
164 /* XpOn */ "\033d#", /* start Xprint for a wyse 60 */
165 /* XpOff */ "\024", /* end Xprint for a wyse 60 */
166 /* MaxXpCps */ 2000, /* highest Xprint speed */
167 /* MinXpCps */ 10, /* slowest Xprint speed */
168 /* SpinCmds */ 1, /* non-zero for mega fast boots */
169 /* First Addr */ 0x0A0000, /* First address to look at */
170 /* Last Addr */ 0xFF0000, /* Last address looked at */
171 /* BufferSize */ 1024, /* Bytes per port of buffering */
172 /* LowWater */ 256, /* how much data left before wakeup */
173 /* LineLength */ 80, /* how wide is the console? */
174 /* CmdTimeout */ HZ, /* how long a close command may take */
180 /* Function prototypes */
182 static void rio_disable_tx_interrupts (void * ptr);
183 static void rio_enable_tx_interrupts (void * ptr);
184 static void rio_disable_rx_interrupts (void * ptr);
185 static void rio_enable_rx_interrupts (void * ptr);
186 static int rio_get_CD (void * ptr);
187 static void rio_shutdown_port (void * ptr);
188 static int rio_set_real_termios (void *ptr);
189 static void rio_hungup (void *ptr);
190 static void rio_close (void *ptr);
191 static int rio_chars_in_buffer (void * ptr);
192 static int rio_fw_ioctl (struct inode *inode, struct file *filp,
193 unsigned int cmd, unsigned long arg);
194 static int rio_init_drivers(void);
196 static void my_hd (void *addr, int len);
198 static struct tty_driver *rio_driver, *rio_driver2;
200 /* The name "p" is a bit non-descript. But that's what the rio-lynxos
201 sources use all over the place. */
207 /* You can have the driver poll your card.
208 - Set rio_poll to 1 to poll every timer tick (10ms on Intel).
209 This is used when the card cannot use an interrupt for some reason.
211 static int rio_poll = 1;
214 /* These are the only open spaces in my computer. Yours may have more
216 static int rio_probe_addrs[]= {0xc0000, 0xd0000, 0xe0000};
218 #define NR_RIO_ADDRS (sizeof(rio_probe_addrs)/sizeof (int))
221 /* Set the mask to all-ones. This alas, only supports 32 interrupts.
222 Some architectures may need more. -- Changed to LONG to
223 support up to 64 bits on 64bit architectures. -- REW 20/06/99 */
224 long rio_irqmask = -1;
226 MODULE_AUTHOR("Rogier Wolff <R.E.Wolff@bitwizard.nl>, Patrick van de Lageweg <patrick@bitwizard.nl>");
227 MODULE_DESCRIPTION("RIO driver");
228 MODULE_LICENSE("GPL");
229 module_param(rio_poll, int, 0);
230 module_param(rio_debug, int, 0644);
231 module_param(rio_irqmask, long, 0);
233 static struct real_driver rio_real_driver = {
234 rio_disable_tx_interrupts,
235 rio_enable_tx_interrupts,
236 rio_disable_rx_interrupts,
237 rio_enable_rx_interrupts,
240 rio_set_real_termios,
248 * Firmware loader driver specific routines
252 static struct file_operations rio_fw_fops = {
253 .owner = THIS_MODULE,
254 .ioctl = rio_fw_ioctl,
257 static struct miscdevice rio_fw_device = {
258 RIOCTL_MISC_MINOR, "rioctl", &rio_fw_fops
265 #ifdef RIO_PARANOIA_CHECK
267 /* This doesn't work. Who's paranoid around here? Not me! */
269 static inline int rio_paranoia_check(struct rio_port const * port,
270 char *name, const char *routine)
273 static const char *badmagic =
274 KERN_ERR "rio: Warning: bad rio port magic number for device %s in %s\n";
275 static const char *badinfo =
276 KERN_ERR "rio: Warning: null rio port for device %s in %s\n";
279 printk (badinfo, name, routine);
282 if (port->magic != RIO_MAGIC) {
283 printk (badmagic, name, routine);
290 #define rio_paranoia_check(a,b,c) 0
295 static void my_hd (void *ad, int len)
298 unsigned char *addr = ad;
300 for (i=0;i<len;i+=16) {
301 rio_dprintk (RIO_DEBUG_PARAM, "%08x ", (int) addr+i);
303 rio_dprintk (RIO_DEBUG_PARAM, "%02x %s", addr[j+i], (j==7)?" ":"");
307 rio_dprintk (RIO_DEBUG_PARAM, "%c", (ch < 0x20)?'.':((ch > 0x7f)?'.':ch));
309 rio_dprintk (RIO_DEBUG_PARAM, "\n");
313 #define my_hd(ad,len) do{/* nothing*/ } while (0)
317 /* Delay a number of jiffies, allowing a signal to interrupt */
318 int RIODelay (struct Port *PortP, int njiffies)
322 rio_dprintk (RIO_DEBUG_DELAY, "delaying %d jiffies\n", njiffies);
323 msleep_interruptible(jiffies_to_msecs(njiffies));
326 if (signal_pending(current))
333 /* Delay a number of jiffies, disallowing a signal to interrupt */
334 int RIODelay_ni (struct Port *PortP, int njiffies)
338 rio_dprintk (RIO_DEBUG_DELAY, "delaying %d jiffies (ni)\n", njiffies);
339 msleep(jiffies_to_msecs(njiffies));
345 int rio_minor(struct tty_struct *tty)
347 return tty->index + (tty->driver == rio_driver) ? 0 : 256;
351 int rio_ismodem(struct tty_struct *tty)
357 void rio_udelay (int usecs)
362 static int rio_set_real_termios (void *ptr)
365 struct tty_struct *tty;
368 tty = ((struct Port *)ptr)->gs.tty;
370 modem = rio_ismodem(tty);
372 rv = RIOParam( (struct Port *) ptr, CONFIG, modem, 1);
380 static void rio_reset_interrupt (struct Host *HostP)
384 switch( HostP->Type ) {
388 WBYTE(HostP->ResetInt , 0xff);
395 static irqreturn_t rio_interrupt (int irq, void *ptr, struct pt_regs *regs)
400 HostP = (struct Host*)ptr; /* &p->RIOHosts[(long)ptr]; */
401 rio_dprintk (RIO_DEBUG_IFLOW, "rio: enter rio_interrupt (%d/%d)\n",
404 /* AAargh! The order in which to do these things is essential and
407 - Rate limit goes before "recursive". Otherwise a series of
408 recursive calls will hang the machine in the interrupt routine.
410 - hardware twiddling goes before "recursive". Otherwise when we
411 poll the card, and a recursive interrupt happens, we won't
412 ack the card, so it might keep on interrupting us. (especially
413 level sensitive interrupt systems like PCI).
415 - Rate limit goes before hardware twiddling. Otherwise we won't
416 catch a card that has gone bonkers.
418 - The "initialized" test goes after the hardware twiddling. Otherwise
419 the card will stick us in the interrupt routine again.
421 - The initialized test goes before recursive.
426 #ifdef IRQ_RATE_LIMIT
427 /* Aaargh! I'm ashamed. This costs more lines-of-code than the
428 actual interrupt routine!. (Well, used to when I wrote that comment) */
433 if (lastjif == jiffies) {
434 if (++nintr > IRQ_RATE_LIMIT) {
435 free_irq (HostP->Ivec, ptr);
436 printk (KERN_ERR "rio: Too many interrupts. Turning off interrupt %d.\n",
445 rio_dprintk (RIO_DEBUG_IFLOW, "rio: We've have noticed the interrupt\n");
446 if (HostP->Ivec == irq) {
447 /* Tell the card we've noticed the interrupt. */
448 rio_reset_interrupt (HostP);
451 if ((HostP->Flags & RUN_STATE) != RC_RUNNING)
454 if (test_and_set_bit (RIO_BOARD_INTR_LOCK, &HostP->locks)) {
455 printk (KERN_ERR "Recursive interrupt! (host %d/irq%d)\n",
456 (int) ptr, HostP->Ivec);
460 RIOServiceHost(p, HostP, irq);
462 rio_dprintk ( RIO_DEBUG_IFLOW, "riointr() doing host %d type %d\n",
463 (int) ptr, HostP->Type);
465 clear_bit (RIO_BOARD_INTR_LOCK, &HostP->locks);
466 rio_dprintk (RIO_DEBUG_IFLOW, "rio: exit rio_interrupt (%d/%d)\n",
473 static void rio_pollfunc (unsigned long data)
477 rio_interrupt (0, &p->RIOHosts[data], NULL);
478 p->RIOHosts[data].timer.expires = jiffies + rio_poll;
479 add_timer (&p->RIOHosts[data].timer);
485 /* ********************************************************************** *
486 * Here are the routines that actually *
487 * interface with the generic_serial driver *
488 * ********************************************************************** */
490 /* Ehhm. I don't know how to fiddle with interrupts on the Specialix
491 cards. .... Hmm. Ok I figured it out. You don't. -- REW */
493 static void rio_disable_tx_interrupts (void * ptr)
497 /* port->gs.flags &= ~GS_TX_INTEN; */
503 static void rio_enable_tx_interrupts (void * ptr)
505 struct Port *PortP = ptr;
510 /* hn = PortP->HostP - p->RIOHosts;
512 rio_dprintk (RIO_DEBUG_TTY, "Pushing host %d\n", hn);
513 rio_interrupt (-1,(void *) hn, NULL); */
515 RIOTxEnable((char *) PortP);
518 * In general we cannot count on "tx empty" interrupts, although
519 * the interrupt routine seems to be able to tell the difference.
521 PortP->gs.flags &= ~GS_TX_INTEN;
527 static void rio_disable_rx_interrupts (void * ptr)
533 static void rio_enable_rx_interrupts (void * ptr)
535 /* struct rio_port *port = ptr; */
541 /* Jeez. Isn't this simple? */
542 static int rio_get_CD (void * ptr)
544 struct Port *PortP = ptr;
548 rv = (PortP->ModemState & MSVR1_CD) != 0;
550 rio_dprintk (RIO_DEBUG_INIT, "Getting CD status: %d\n", rv);
557 /* Jeez. Isn't this simple? Actually, we can sync with the actual port
558 by just pushing stuff into the queue going to the port... */
559 static int rio_chars_in_buffer (void * ptr)
568 /* Nothing special here... */
569 static void rio_shutdown_port (void * ptr)
575 PortP = (struct Port *)ptr;
576 PortP->gs.tty = NULL;
578 port->gs.flags &= ~ GS_ACTIVE;
580 rio_dprintk (RIO_DBUG_TTY, "No tty.\n");
583 if (!port->gs.tty->termios) {
584 rio_dprintk (RIO_DEBUG_TTY, "No termios.\n");
587 if (port->gs.tty->termios->c_cflag & HUPCL) {
588 rio_setsignals (port, 0, 0);
596 /* I haven't the foggiest why the decrement use count has to happen
597 here. The whole linux serial drivers stuff needs to be redesigned.
598 My guess is that this is a hack to minimize the impact of a bug
599 elsewhere. Thinking about it some more. (try it sometime) Try
600 running minicom on a serial port that is driven by a modularized
601 driver. Have the modem hangup. Then remove the driver module. Then
602 exit minicom. I expect an "oops". -- REW */
603 static void rio_hungup (void *ptr)
609 PortP = (struct Port *)ptr;
610 PortP->gs.tty = NULL;
616 /* The standard serial_close would become shorter if you'd wrap it like
618 rs_close (...){save_flags;cli;real_close();dec_use_count;restore_flags;}
620 static void rio_close (void *ptr)
626 PortP = (struct Port *)ptr;
630 if(PortP->gs.count) {
631 printk (KERN_ERR "WARNING port count:%d\n", PortP->gs.count);
635 PortP->gs.tty = NULL;
641 static int rio_fw_ioctl (struct inode *inode, struct file *filp,
642 unsigned int cmd, unsigned long arg)
647 /* The "dev" argument isn't used. */
648 rc = riocontrol (p, 0, cmd, (void *)arg, capable(CAP_SYS_ADMIN));
654 extern int RIOShortCommand(struct rio_info *p, struct Port *PortP,
655 int command, int len, int arg);
657 static int rio_ioctl (struct tty_struct * tty, struct file * filp,
658 unsigned int cmd, unsigned long arg)
666 PortP = (struct Port *)tty->driver_data;
672 rc = put_user(((tty->termios->c_cflag & CLOCAL) ? 1 : 0),
673 (unsigned int *) arg);
677 if ((rc = get_user(ival, (unsigned int *) arg)) == 0) {
678 tty->termios->c_cflag =
679 (tty->termios->c_cflag & ~CLOCAL) |
684 if ((rc = verify_area(VERIFY_WRITE, (void *) arg,
685 sizeof(struct serial_struct))) == 0)
686 rc = gs_getserial(&PortP->gs, (struct serial_struct *) arg);
689 if ( PortP->State & RIO_DELETED ) {
690 rio_dprintk (RIO_DEBUG_TTY, "BREAK on deleted RTA\n");
693 if (RIOShortCommand(p, PortP, SBREAK, 2, 250) == RIO_FAIL) {
694 rio_dprintk (RIO_DEBUG_INTR, "SBREAK RIOShortCommand failed\n");
700 if ( PortP->State & RIO_DELETED ) {
701 rio_dprintk (RIO_DEBUG_TTY, "BREAK on deleted RTA\n");
706 if (l > 255) l = 255;
707 if (RIOShortCommand(p, PortP, SBREAK, 2, arg?arg*100:250) == RIO_FAIL) {
708 rio_dprintk (RIO_DEBUG_INTR, "SBREAK RIOShortCommand failed\n");
714 if ((rc = verify_area(VERIFY_READ, (void *) arg,
715 sizeof(struct serial_struct))) == 0)
716 rc = gs_setserial(&PortP->gs, (struct serial_struct *) arg);
720 * note: these IOCTLs no longer reach here. Use
721 * tiocmset/tiocmget driver methods instead. The
722 * #if 0 disablement predates this comment.
725 if ((rc = verify_area(VERIFY_WRITE, (void *) arg,
726 sizeof(unsigned int))) == 0) {
727 ival = rio_getsignals(port);
728 put_user(ival, (unsigned int *) arg);
732 if ((rc = get_user(ival, (unsigned int *) arg)) == 0) {
733 rio_setsignals(port, ((ival & TIOCM_DTR) ? 1 : -1),
734 ((ival & TIOCM_RTS) ? 1 : -1));
738 if ((rc = get_user(ival, (unsigned int *) arg)) == 0) {
739 rio_setsignals(port, ((ival & TIOCM_DTR) ? 0 : -1),
740 ((ival & TIOCM_RTS) ? 0 : -1));
744 if ((rc = get_user(ival, (unsigned int *) arg)) == 0) {
745 rio_setsignals(port, ((ival & TIOCM_DTR) ? 1 : 0),
746 ((ival & TIOCM_RTS) ? 1 : 0));
759 /* The throttle/unthrottle scheme for the Specialix card is different
760 * from other drivers and deserves some explanation.
761 * The Specialix hardware takes care of XON/XOFF
762 * and CTS/RTS flow control itself. This means that all we have to
763 * do when signalled by the upper tty layer to throttle/unthrottle is
764 * to make a note of it here. When we come to read characters from the
765 * rx buffers on the card (rio_receive_chars()) we look to see if the
766 * upper layer can accept more (as noted here in rio_rx_throt[]).
767 * If it can't we simply don't remove chars from the cards buffer.
768 * When the tty layer can accept chars, we again note that here and when
769 * rio_receive_chars() is called it will remove them from the cards buffer.
770 * The card will notice that a ports buffer has drained below some low
771 * water mark and will unflow control the line itself, using whatever
772 * flow control scheme is in use for that port. -- Simon Allen
775 static void rio_throttle (struct tty_struct * tty)
777 struct Port *port = (struct Port *)tty->driver_data;
780 /* If the port is using any type of input flow
781 * control then throttle the port.
784 if((tty->termios->c_cflag & CRTSCTS) || (I_IXOFF(tty)) ) {
785 port->State |= RIO_THROTTLE_RX;
792 static void rio_unthrottle (struct tty_struct * tty)
794 struct Port *port = (struct Port *)tty->driver_data;
797 /* Always unthrottle even if flow control is not enabled on
798 * this port in case we disabled flow control while the port
802 port->State &= ~RIO_THROTTLE_RX;
812 /* ********************************************************************** *
813 * Here are the initialization routines. *
814 * ********************************************************************** */
817 static struct vpd_prom *get_VPD_PROM (struct Host *hp)
819 static struct vpd_prom vpdp;
824 rio_dprintk (RIO_DEBUG_PROBE, "Going to verify vpd prom at %p.\n",
825 hp->Caddr + RIO_VPD_ROM);
828 for (i=0;i< sizeof (struct vpd_prom);i++)
829 *p++ = readb (hp->Caddr+RIO_VPD_ROM + i*2);
830 /* read_rio_byte (hp, RIO_VPD_ROM + i*2); */
832 /* Terminate the identifier string.
833 *** requires one extra byte in struct vpd_prom *** */
836 if (rio_debug & RIO_DEBUG_PROBE)
837 my_hd ((char *)&vpdp, 0x20);
844 static struct tty_operations rio_ops = {
848 .put_char = gs_put_char,
849 .flush_chars = gs_flush_chars,
850 .write_room = gs_write_room,
851 .chars_in_buffer = gs_chars_in_buffer,
852 .flush_buffer = gs_flush_buffer,
854 .throttle = rio_throttle,
855 .unthrottle = rio_unthrottle,
856 .set_termios = gs_set_termios,
862 static int rio_init_drivers(void)
866 rio_driver = alloc_tty_driver(256);
869 rio_driver2 = alloc_tty_driver(256);
875 rio_driver->owner = THIS_MODULE;
876 rio_driver->driver_name = "specialix_rio";
877 rio_driver->name = "ttySR";
878 rio_driver->major = RIO_NORMAL_MAJOR0;
879 rio_driver->type = TTY_DRIVER_TYPE_SERIAL;
880 rio_driver->subtype = SERIAL_TYPE_NORMAL;
881 rio_driver->init_termios = tty_std_termios;
882 rio_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
883 rio_driver->flags = TTY_DRIVER_REAL_RAW;
884 tty_set_operations(rio_driver, &rio_ops);
886 rio_driver2->owner = THIS_MODULE;
887 rio_driver2->driver_name = "specialix_rio";
888 rio_driver2->name = "ttySR";
889 rio_driver2->major = RIO_NORMAL_MAJOR1;
890 rio_driver2->type = TTY_DRIVER_TYPE_SERIAL;
891 rio_driver2->subtype = SERIAL_TYPE_NORMAL;
892 rio_driver2->init_termios = tty_std_termios;
893 rio_driver2->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
894 rio_driver2->flags = TTY_DRIVER_REAL_RAW;
895 tty_set_operations(rio_driver2, &rio_ops);
897 rio_dprintk (RIO_DEBUG_INIT, "set_termios = %p\n", gs_set_termios);
899 if ((error = tty_register_driver(rio_driver)))
901 if ((error = tty_register_driver(rio_driver2)))
906 tty_unregister_driver(rio_driver);
908 put_tty_driver(rio_driver2);
910 put_tty_driver(rio_driver);
912 printk(KERN_ERR "rio: Couldn't register a rio driver, error = %d\n",
918 static void * ckmalloc (int size)
922 p = kmalloc(size, GFP_KERNEL);
930 static int rio_init_datastructures (void)
936 /* Many drivers statically allocate the maximum number of ports
937 There is no reason not to allocate them dynamically. Is there? -- REW */
938 /* However, the RIO driver allows users to configure their first
939 RTA as the ports numbered 504-511. We therefore need to allocate
940 the whole range. :-( -- REW */
942 #define RI_SZ sizeof(struct rio_info)
943 #define HOST_SZ sizeof(struct Host)
944 #define PORT_SZ sizeof(struct Port *)
945 #define TMIO_SZ sizeof(struct termios *)
946 rio_dprintk (RIO_DEBUG_INIT, "getting : %d %d %d %d %d bytes\n",
951 RIO_PORTS * TMIO_SZ);
953 if (!(p = ckmalloc ( RI_SZ))) goto free0;
954 if (!(p->RIOHosts = ckmalloc (RIO_HOSTS * HOST_SZ))) goto free1;
955 if (!(p->RIOPortp = ckmalloc (RIO_PORTS * PORT_SZ))) goto free2;
956 p->RIOConf = RIOConf;
957 rio_dprintk (RIO_DEBUG_INIT, "Got : %p %p %p\n",
958 p, p->RIOHosts, p->RIOPortp);
961 for (i = 0; i < RIO_PORTS; i++) {
962 port = p->RIOPortp[i] = ckmalloc (sizeof (struct Port));
966 rio_dprintk (RIO_DEBUG_INIT, "initing port %d (%d)\n", i, port->Mapped);
968 port->gs.magic = RIO_MAGIC;
969 port->gs.close_delay = HZ/2;
970 port->gs.closing_wait = 30 * HZ;
971 port->gs.rd = &rio_real_driver;
972 spin_lock_init(&port->portSem);
974 * Initializing wait queue
976 init_waitqueue_head(&port->gs.open_wait);
977 init_waitqueue_head(&port->gs.close_wait);
980 /* We could postpone initializing them to when they are configured. */
985 if (rio_debug & RIO_DEBUG_INIT) {
986 my_hd (&rio_real_driver, sizeof (rio_real_driver));
993 free6:for (i--;i>=0;i--)
994 kfree (p->RIOPortp[i]);
997 free3:*/kfree (p->RIOPortp);
998 free2:kfree (p->RIOHosts);
1000 rio_dprintk (RIO_DEBUG_INIT, "Not enough memory! %p %p %p\n",
1001 p, p->RIOHosts, p->RIOPortp);
1007 static void __exit rio_release_drivers(void)
1010 tty_unregister_driver(rio_driver2);
1011 tty_unregister_driver(rio_driver);
1012 put_tty_driver(rio_driver2);
1013 put_tty_driver(rio_driver);
1019 /* This was written for SX, but applies to RIO too...
1020 (including bugs....)
1022 There is another bit besides Bit 17. Turning that bit off
1023 (on boards shipped with the fix in the eeprom) results in a
1024 hang on the next access to the card.
1027 /********************************************************
1028 * Setting bit 17 in the CNTRL register of the PLX 9050 *
1029 * chip forces a retry on writes while a read is pending.*
1030 * This is to prevent the card locking up on Intel Xeon *
1031 * multiprocessor systems with the NX chipset. -- NV *
1032 ********************************************************/
1034 /* Newer cards are produced with this bit set from the configuration
1035 EEprom. As the bit is read/write for the CPU, we can fix it here,
1036 if we detect that it isn't set correctly. -- REW */
1038 static void fix_rio_pci (struct pci_dev *pdev)
1040 unsigned int hwbase;
1041 unsigned long rebase;
1044 #define CNTRL_REG_OFFSET 0x50
1045 #define CNTRL_REG_GOODVALUE 0x18260000
1047 pci_read_config_dword(pdev, PCI_BASE_ADDRESS_0, &hwbase);
1048 hwbase &= PCI_BASE_ADDRESS_MEM_MASK;
1049 rebase = (ulong) ioremap(hwbase, 0x80);
1050 t = readl (rebase + CNTRL_REG_OFFSET);
1051 if (t != CNTRL_REG_GOODVALUE) {
1052 printk (KERN_DEBUG "rio: performing cntrl reg fix: %08x -> %08x\n",
1053 t, CNTRL_REG_GOODVALUE);
1054 writel (CNTRL_REG_GOODVALUE, rebase + CNTRL_REG_OFFSET);
1056 iounmap((char*) rebase);
1061 static int __init rio_init(void)
1067 struct vpd_prom *vpdp;
1071 struct pci_dev *pdev = NULL;
1073 unsigned short tshort;
1077 rio_dprintk (RIO_DEBUG_INIT, "Initing rio module... (rio_debug=%d)\n",
1080 if (abs ((long) (&rio_debug) - rio_debug) < 0x10000) {
1081 printk (KERN_WARNING "rio: rio_debug is an address, instead of a value. "
1082 "Assuming -1. Was %x/%p.\n", rio_debug, &rio_debug);
1086 if (misc_register(&rio_fw_device) < 0) {
1087 printk(KERN_ERR "RIO: Unable to register firmware loader driver.\n");
1091 retval = rio_init_datastructures ();
1093 misc_deregister(&rio_fw_device);
1098 /* First look for the JET devices: */
1099 while ((pdev = pci_find_device (PCI_VENDOR_ID_SPECIALIX,
1100 PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8,
1102 if (pci_enable_device(pdev)) continue;
1104 /* Specialix has a whole bunch of cards with
1105 0x2000 as the device ID. They say its because
1106 the standard requires it. Stupid standard. */
1107 /* It seems that reading a word doesn't work reliably on 2.0.
1108 Also, reading a non-aligned dword doesn't work. So we read the
1109 whole dword at 0x2c and extract the word at 0x2e (SUBSYSTEM_ID)
1111 /* I don't know why the define doesn't work, constant 0x2c does --REW */
1112 pci_read_config_dword (pdev, 0x2c, &tint);
1113 tshort = (tint >> 16) & 0xffff;
1114 rio_dprintk (RIO_DEBUG_PROBE, "Got a specialix card: %x.\n", tint);
1115 if (tshort != 0x0100) {
1116 rio_dprintk (RIO_DEBUG_PROBE, "But it's not a RIO card (%d)...\n",
1120 rio_dprintk (RIO_DEBUG_PROBE, "cp1\n");
1122 pci_read_config_dword(pdev, PCI_BASE_ADDRESS_2, &tint);
1124 hp = &p->RIOHosts[p->RIONumHosts];
1125 hp->PaddrP = tint & PCI_BASE_ADDRESS_MEM_MASK;
1126 hp->Ivec = pdev->irq;
1127 if (((1 << hp->Ivec) & rio_irqmask) == 0)
1129 hp->Caddr = ioremap(p->RIOHosts[p->RIONumHosts].PaddrP, RIO_WINDOW_LEN);
1130 hp->CardP = (struct DpRam *) hp->Caddr;
1132 hp->Copy = rio_pcicopy;
1133 hp->Mode = RIO_PCI_BOOT_FROM_RAM;
1134 spin_lock_init(&hp->HostLock);
1135 rio_reset_interrupt (hp);
1136 rio_start_card_running (hp);
1138 rio_dprintk (RIO_DEBUG_PROBE, "Going to test it (%p/%p).\n",
1139 (void *)p->RIOHosts[p->RIONumHosts].PaddrP,
1140 p->RIOHosts[p->RIONumHosts].Caddr);
1141 if (RIOBoardTest( p->RIOHosts[p->RIONumHosts].PaddrP,
1142 p->RIOHosts[p->RIONumHosts].Caddr,
1143 RIO_PCI, 0 ) == RIO_SUCCESS) {
1144 rio_dprintk (RIO_DEBUG_INIT, "Done RIOBoardTest\n");
1145 WBYTE(p->RIOHosts[p->RIONumHosts].ResetInt, 0xff);
1146 p->RIOHosts[p->RIONumHosts].UniqueNum =
1147 ((RBYTE(p->RIOHosts[p->RIONumHosts].Unique[0]) &0xFF)<< 0)|
1148 ((RBYTE(p->RIOHosts[p->RIONumHosts].Unique[1]) &0xFF)<< 8)|
1149 ((RBYTE(p->RIOHosts[p->RIONumHosts].Unique[2]) &0xFF)<<16)|
1150 ((RBYTE(p->RIOHosts[p->RIONumHosts].Unique[3]) &0xFF)<<24);
1151 rio_dprintk (RIO_DEBUG_PROBE, "Hmm Tested ok, uniqid = %x.\n",
1152 p->RIOHosts[p->RIONumHosts].UniqueNum);
1155 p->RIOLastPCISearch = RIO_SUCCESS;
1159 iounmap((char*) (p->RIOHosts[p->RIONumHosts].Caddr));
1163 /* Then look for the older PCI card.... : */
1165 /* These older PCI cards have problems (only byte-mode access is
1166 supported), which makes them a bit awkward to support.
1167 They also have problems sharing interrupts. Be careful.
1168 (The driver now refuses to share interrupts for these
1169 cards. This should be sufficient).
1172 /* Then look for the older RIO/PCI devices: */
1173 while ((pdev = pci_find_device (PCI_VENDOR_ID_SPECIALIX,
1174 PCI_DEVICE_ID_SPECIALIX_RIO,
1176 if (pci_enable_device(pdev)) continue;
1178 #ifdef CONFIG_RIO_OLDPCI
1179 pci_read_config_dword(pdev, PCI_BASE_ADDRESS_0, &tint);
1181 hp = &p->RIOHosts[p->RIONumHosts];
1182 hp->PaddrP = tint & PCI_BASE_ADDRESS_MEM_MASK;
1183 hp->Ivec = pdev->irq;
1184 if (((1 << hp->Ivec) & rio_irqmask) == 0)
1186 hp->Ivec |= 0x8000; /* Mark as non-sharable */
1187 hp->Caddr = ioremap(p->RIOHosts[p->RIONumHosts].PaddrP, RIO_WINDOW_LEN);
1188 hp->CardP = (struct DpRam *) hp->Caddr;
1190 hp->Copy = rio_pcicopy;
1191 hp->Mode = RIO_PCI_BOOT_FROM_RAM;
1192 spin_lock_init(&hp->HostLock);
1194 rio_dprintk (RIO_DEBUG_PROBE, "Ivec: %x\n", hp->Ivec);
1195 rio_dprintk (RIO_DEBUG_PROBE, "Mode: %x\n", hp->Mode);
1197 rio_reset_interrupt (hp);
1198 rio_start_card_running (hp);
1199 rio_dprintk (RIO_DEBUG_PROBE, "Going to test it (%p/%p).\n",
1200 (void *)p->RIOHosts[p->RIONumHosts].PaddrP,
1201 p->RIOHosts[p->RIONumHosts].Caddr);
1202 if (RIOBoardTest( p->RIOHosts[p->RIONumHosts].PaddrP,
1203 p->RIOHosts[p->RIONumHosts].Caddr,
1204 RIO_PCI, 0 ) == RIO_SUCCESS) {
1205 WBYTE(p->RIOHosts[p->RIONumHosts].ResetInt, 0xff);
1206 p->RIOHosts[p->RIONumHosts].UniqueNum =
1207 ((RBYTE(p->RIOHosts[p->RIONumHosts].Unique[0]) &0xFF)<< 0)|
1208 ((RBYTE(p->RIOHosts[p->RIONumHosts].Unique[1]) &0xFF)<< 8)|
1209 ((RBYTE(p->RIOHosts[p->RIONumHosts].Unique[2]) &0xFF)<<16)|
1210 ((RBYTE(p->RIOHosts[p->RIONumHosts].Unique[3]) &0xFF)<<24);
1211 rio_dprintk (RIO_DEBUG_PROBE, "Hmm Tested ok, uniqid = %x.\n",
1212 p->RIOHosts[p->RIONumHosts].UniqueNum);
1214 p->RIOLastPCISearch = RIO_SUCCESS;
1218 iounmap((char*) (p->RIOHosts[p->RIONumHosts].Caddr));
1221 printk (KERN_ERR "Found an older RIO PCI card, but the driver is not "
1222 "compiled to support it.\n");
1227 /* Now probe for ISA cards... */
1228 for (i=0;i<NR_RIO_ADDRS;i++) {
1229 hp = &p->RIOHosts[p->RIONumHosts];
1230 hp->PaddrP = rio_probe_addrs[i];
1231 /* There was something about the IRQs of these cards. 'Forget what.--REW */
1233 hp->Caddr = ioremap(p->RIOHosts[p->RIONumHosts].PaddrP, RIO_WINDOW_LEN);
1234 hp->CardP = (struct DpRam *) hp->Caddr;
1236 hp->Copy = rio_pcicopy; /* AT card PCI???? - PVDL
1237 * -- YES! this is now a normal copy. Only the
1238 * old PCI card uses the special PCI copy.
1239 * Moreover, the ISA card will work with the
1240 * special PCI copy anyway. -- REW */
1242 spin_lock_init(&hp->HostLock);
1244 vpdp = get_VPD_PROM (hp);
1245 rio_dprintk (RIO_DEBUG_PROBE, "Got VPD ROM\n");
1247 if ((strncmp (vpdp->identifier, RIO_ISA_IDENT, 16) == 0) ||
1248 (strncmp (vpdp->identifier, RIO_ISA2_IDENT, 16) == 0) ||
1249 (strncmp (vpdp->identifier, RIO_ISA3_IDENT, 16) == 0)) {
1250 /* Board is present... */
1251 if (RIOBoardTest (hp->PaddrP,
1252 hp->Caddr, RIO_AT, 0) == RIO_SUCCESS) {
1253 /* ... and feeling fine!!!! */
1254 rio_dprintk (RIO_DEBUG_PROBE, "Hmm Tested ok, uniqid = %x.\n",
1255 p->RIOHosts[p->RIONumHosts].UniqueNum);
1256 if (RIOAssignAT(p, hp->PaddrP, hp->Caddr, 0)) {
1257 rio_dprintk (RIO_DEBUG_PROBE, "Hmm Tested ok, host%d uniqid = %x.\n",
1259 p->RIOHosts[p->RIONumHosts-1].UniqueNum);
1266 iounmap ((char*) (hp->Caddr));
1271 for (i=0;i<p->RIONumHosts;i++) {
1272 hp = &p->RIOHosts[i];
1274 int mode = SA_SHIRQ;
1275 if (hp->Ivec & 0x8000) {mode = 0; hp->Ivec &= 0x7fff;}
1276 rio_dprintk (RIO_DEBUG_INIT, "Requesting interrupt hp: %p rio_interrupt: %d Mode: %x\n", hp,hp->Ivec, hp->Mode);
1277 retval = request_irq (hp->Ivec, rio_interrupt, mode, "rio", hp);
1278 rio_dprintk (RIO_DEBUG_INIT, "Return value from request_irq: %d\n", retval);
1280 printk(KERN_ERR "rio: Cannot allocate irq %d.\n", hp->Ivec);
1283 rio_dprintk (RIO_DEBUG_INIT, "Got irq %d.\n", hp->Ivec);
1285 rio_dprintk (RIO_DEBUG_INIT, "Enabling interrupts on rio card.\n");
1286 hp->Mode |= RIO_PCI_INT_ENABLE;
1288 hp->Mode &= !RIO_PCI_INT_ENABLE;
1289 rio_dprintk (RIO_DEBUG_INIT, "New Mode: %x\n", hp->Mode);
1290 rio_start_card_running (hp);
1292 /* Init the timer "always" to make sure that it can safely be
1293 deleted when we unload... */
1295 init_timer (&hp->timer);
1297 rio_dprintk (RIO_DEBUG_INIT, "Starting polling at %dj intervals.\n",
1300 hp->timer.function = rio_pollfunc;
1301 hp->timer.expires = jiffies + rio_poll;
1302 add_timer (&hp->timer);
1307 rio_dprintk (RIO_DEBUG_INIT, "rio: total of %d boards detected.\n", found);
1308 rio_init_drivers ();
1310 /* deregister the misc device we created earlier */
1311 misc_deregister(&rio_fw_device);
1315 return found?0:-EIO;
1319 static void __exit rio_exit (void)
1326 for (i=0,hp=p->RIOHosts;i<p->RIONumHosts;i++, hp++) {
1327 RIOHostReset (hp->Type, hp->CardP, hp->Slot);
1329 free_irq (hp->Ivec, hp);
1330 rio_dprintk (RIO_DEBUG_INIT, "freed irq %d.\n", hp->Ivec);
1332 /* It is safe/allowed to del_timer a non-active timer */
1333 del_timer (&hp->timer);
1336 if (misc_deregister(&rio_fw_device) < 0) {
1337 printk (KERN_INFO "rio: couldn't deregister control-device\n");
1341 rio_dprintk (RIO_DEBUG_CLEANUP, "Cleaning up drivers\n");
1343 rio_release_drivers ();
1345 /* Release dynamically allocated memory */
1346 kfree (p->RIOPortp);
1347 kfree (p->RIOHosts);
1353 module_init(rio_init);
1354 module_exit(rio_exit);
1357 * Anybody who knows why this doesn't work for me, please tell me -- REW.
1358 * Snatched from scsi.c (fixed one spelling error):
1359 * Overrides for Emacs so that we follow Linus' tabbing style.
1360 * Emacs will notice this stuff at the end of the file and automatically
1361 * adjust the settings for this buffer only. This must remain at the end
1363 * ---------------------------------------------------------------------------
1366 * c-brace-imaginary-offset: 0
1367 * c-brace-offset: -4
1368 * c-argdecl-indent: 4
1369 * c-label-offset: -4
1370 * c-continued-statement-offset: 4
1371 * c-continued-brace-offset: 0
1372 * indent-tabs-mode: nil