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 #include <linux/module.h>
31 #include <linux/kdev_t.h>
33 #include <linux/kernel.h>
34 #include <linux/sched.h>
35 #include <linux/ioport.h>
36 #include <linux/interrupt.h>
37 #include <linux/errno.h>
38 #include <linux/tty.h>
39 #include <linux/tty_flip.h>
41 #include <linux/serial.h>
42 #include <linux/fcntl.h>
43 #include <linux/major.h>
44 #include <linux/delay.h>
45 #include <linux/pci.h>
46 #include <linux/slab.h>
47 #include <linux/miscdevice.h>
48 #include <linux/init.h>
50 #include <linux/generic_serial.h>
51 #include <asm/uaccess.h>
53 #include "linux_compat.h"
83 #include "rio_linux.h"
85 /* I don't think that this driver can handle more than 512 ports on
86 one machine. Specialix specifies max 4 boards in one machine. I don't
87 know why. If you want to try anyway you'll have to increase the number
88 of boards in rio.h. You'll have to allocate more majors if you need
89 more than 512 ports.... */
91 #ifndef RIO_NORMAL_MAJOR0
92 /* This allows overriding on the compiler commandline, or in a "major.h"
93 include or something like that */
94 #define RIO_NORMAL_MAJOR0 154
95 #define RIO_NORMAL_MAJOR1 156
98 #ifndef PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8
99 #define PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8 0x2000
102 #ifndef RIO_WINDOW_LEN
103 #define RIO_WINDOW_LEN 0x10000
107 /* Configurable options:
108 (Don't be too sure that it'll work if you toggle them) */
110 /* Am I paranoid or not ? ;-) */
111 #undef RIO_PARANOIA_CHECK
114 /* 20 -> 2000 per second. The card should rate-limit interrupts at 1000
115 Hz, but it is user configurable. I don't recommend going above 1000
116 Hz. The interrupt ratelimit might trigger if the interrupt is
117 shared with a very active other device.
118 undef this if you want to disable the check....
120 #define IRQ_RATE_LIMIT 200
123 /* These constants are derived from SCO Source */
126 /* locator */ "RIO Config here",
127 /* startuptime */ HZ * 2,
128 /* how long to wait for card to run */
130 /* TRUE -> always use line disc. */
131 /* intrpolltime */ 1,
132 /* The frequency of OUR polls */
133 /* breakinterval */ 25,
134 /* x10 mS XXX: units seem to be 1ms not 10! -- REW */
137 /* RtaLoadBase */ 0x7000,
138 /* HostLoadBase */ 0x7C00,
140 /* number of Xprint hits per second */
142 /* Xprint characters per second */
144 /* start Xprint for a wyse 60 */
146 /* end Xprint for a wyse 60 */
148 /* highest Xprint speed */
150 /* slowest Xprint speed */
152 /* non-zero for mega fast boots */
153 /* First Addr */ 0x0A0000,
154 /* First address to look at */
155 /* Last Addr */ 0xFF0000,
156 /* Last address looked at */
157 /* BufferSize */ 1024,
158 /* Bytes per port of buffering */
160 /* how much data left before wakeup */
162 /* how wide is the console? */
164 /* how long a close command may take */
170 /* Function prototypes */
172 static void rio_disable_tx_interrupts(void *ptr);
173 static void rio_enable_tx_interrupts(void *ptr);
174 static void rio_disable_rx_interrupts(void *ptr);
175 static void rio_enable_rx_interrupts(void *ptr);
176 static int rio_carrier_raised(struct tty_port *port);
177 static void rio_shutdown_port(void *ptr);
178 static int rio_set_real_termios(void *ptr);
179 static void rio_hungup(void *ptr);
180 static void rio_close(void *ptr);
181 static int rio_chars_in_buffer(void *ptr);
182 static long rio_fw_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
183 static int rio_init_drivers(void);
185 static void my_hd(void *addr, int len);
187 static struct tty_driver *rio_driver, *rio_driver2;
189 /* The name "p" is a bit non-descript. But that's what the rio-lynxos
190 sources use all over the place. */
196 /* You can have the driver poll your card.
197 - Set rio_poll to 1 to poll every timer tick (10ms on Intel).
198 This is used when the card cannot use an interrupt for some reason.
200 static int rio_poll = 1;
203 /* These are the only open spaces in my computer. Yours may have more
205 static int rio_probe_addrs[] = { 0xc0000, 0xd0000, 0xe0000 };
207 #define NR_RIO_ADDRS ARRAY_SIZE(rio_probe_addrs)
210 /* Set the mask to all-ones. This alas, only supports 32 interrupts.
211 Some architectures may need more. -- Changed to LONG to
212 support up to 64 bits on 64bit architectures. -- REW 20/06/99 */
213 static long rio_irqmask = -1;
215 MODULE_AUTHOR("Rogier Wolff <R.E.Wolff@bitwizard.nl>, Patrick van de Lageweg <patrick@bitwizard.nl>");
216 MODULE_DESCRIPTION("RIO driver");
217 MODULE_LICENSE("GPL");
218 module_param(rio_poll, int, 0);
219 module_param(rio_debug, int, 0644);
220 module_param(rio_irqmask, long, 0);
222 static struct real_driver rio_real_driver = {
223 rio_disable_tx_interrupts,
224 rio_enable_tx_interrupts,
225 rio_disable_rx_interrupts,
226 rio_enable_rx_interrupts,
228 rio_set_real_termios,
236 * Firmware loader driver specific routines
240 static const struct file_operations rio_fw_fops = {
241 .owner = THIS_MODULE,
242 .unlocked_ioctl = rio_fw_ioctl,
245 static struct miscdevice rio_fw_device = {
246 RIOCTL_MISC_MINOR, "rioctl", &rio_fw_fops
253 #ifdef RIO_PARANOIA_CHECK
255 /* This doesn't work. Who's paranoid around here? Not me! */
257 static inline int rio_paranoia_check(struct rio_port const *port, char *name, const char *routine)
260 static const char *badmagic = KERN_ERR "rio: Warning: bad rio port magic number for device %s in %s\n";
261 static const char *badinfo = KERN_ERR "rio: Warning: null rio port for device %s in %s\n";
264 printk(badinfo, name, routine);
267 if (port->magic != RIO_MAGIC) {
268 printk(badmagic, name, routine);
275 #define rio_paranoia_check(a,b,c) 0
280 static void my_hd(void *ad, int len)
283 unsigned char *addr = ad;
285 for (i = 0; i < len; i += 16) {
286 rio_dprintk(RIO_DEBUG_PARAM, "%08lx ", (unsigned long) addr + i);
287 for (j = 0; j < 16; j++) {
288 rio_dprintk(RIO_DEBUG_PARAM, "%02x %s", addr[j + i], (j == 7) ? " " : "");
290 for (j = 0; j < 16; j++) {
292 rio_dprintk(RIO_DEBUG_PARAM, "%c", (ch < 0x20) ? '.' : ((ch > 0x7f) ? '.' : ch));
294 rio_dprintk(RIO_DEBUG_PARAM, "\n");
298 #define my_hd(ad,len) do{/* nothing*/ } while (0)
302 /* Delay a number of jiffies, allowing a signal to interrupt */
303 int RIODelay(struct Port *PortP, int njiffies)
307 rio_dprintk(RIO_DEBUG_DELAY, "delaying %d jiffies\n", njiffies);
308 msleep_interruptible(jiffies_to_msecs(njiffies));
311 if (signal_pending(current))
318 /* Delay a number of jiffies, disallowing a signal to interrupt */
319 int RIODelay_ni(struct Port *PortP, int njiffies)
323 rio_dprintk(RIO_DEBUG_DELAY, "delaying %d jiffies (ni)\n", njiffies);
324 msleep(jiffies_to_msecs(njiffies));
329 void rio_copy_to_card(void *from, void __iomem *to, int len)
331 rio_copy_toio(to, from, len);
334 int rio_minor(struct tty_struct *tty)
336 return tty->index + (tty->driver == rio_driver) ? 0 : 256;
339 static int rio_set_real_termios(void *ptr)
341 return RIOParam((struct Port *) ptr, RIOC_CONFIG, 1, 1);
345 static void rio_reset_interrupt(struct Host *HostP)
349 switch (HostP->Type) {
353 writeb(0xFF, &HostP->ResetInt);
360 static irqreturn_t rio_interrupt(int irq, void *ptr)
365 HostP = ptr; /* &p->RIOHosts[(long)ptr]; */
366 rio_dprintk(RIO_DEBUG_IFLOW, "rio: enter rio_interrupt (%d/%d)\n", irq, HostP->Ivec);
368 /* AAargh! The order in which to do these things is essential and
371 - hardware twiddling goes before "recursive". Otherwise when we
372 poll the card, and a recursive interrupt happens, we won't
373 ack the card, so it might keep on interrupting us. (especially
374 level sensitive interrupt systems like PCI).
376 - Rate limit goes before hardware twiddling. Otherwise we won't
377 catch a card that has gone bonkers.
379 - The "initialized" test goes after the hardware twiddling. Otherwise
380 the card will stick us in the interrupt routine again.
382 - The initialized test goes before recursive.
385 rio_dprintk(RIO_DEBUG_IFLOW, "rio: We've have noticed the interrupt\n");
386 if (HostP->Ivec == irq) {
387 /* Tell the card we've noticed the interrupt. */
388 rio_reset_interrupt(HostP);
391 if ((HostP->Flags & RUN_STATE) != RC_RUNNING)
394 if (test_and_set_bit(RIO_BOARD_INTR_LOCK, &HostP->locks)) {
395 printk(KERN_ERR "Recursive interrupt! (host %p/irq%d)\n", ptr, HostP->Ivec);
399 RIOServiceHost(p, HostP);
401 rio_dprintk(RIO_DEBUG_IFLOW, "riointr() doing host %p type %d\n", ptr, HostP->Type);
403 clear_bit(RIO_BOARD_INTR_LOCK, &HostP->locks);
404 rio_dprintk(RIO_DEBUG_IFLOW, "rio: exit rio_interrupt (%d/%d)\n", irq, HostP->Ivec);
410 static void rio_pollfunc(unsigned long data)
414 rio_interrupt(0, &p->RIOHosts[data]);
415 mod_timer(&p->RIOHosts[data].timer, jiffies + rio_poll);
421 /* ********************************************************************** *
422 * Here are the routines that actually *
423 * interface with the generic_serial driver *
424 * ********************************************************************** */
426 /* Ehhm. I don't know how to fiddle with interrupts on the Specialix
427 cards. .... Hmm. Ok I figured it out. You don't. -- REW */
429 static void rio_disable_tx_interrupts(void *ptr)
433 /* port->gs.port.flags &= ~GS_TX_INTEN; */
439 static void rio_enable_tx_interrupts(void *ptr)
441 struct Port *PortP = ptr;
446 /* hn = PortP->HostP - p->RIOHosts;
448 rio_dprintk (RIO_DEBUG_TTY, "Pushing host %d\n", hn);
449 rio_interrupt (-1,(void *) hn, NULL); */
451 RIOTxEnable((char *) PortP);
454 * In general we cannot count on "tx empty" interrupts, although
455 * the interrupt routine seems to be able to tell the difference.
457 PortP->gs.port.flags &= ~GS_TX_INTEN;
463 static void rio_disable_rx_interrupts(void *ptr)
469 static void rio_enable_rx_interrupts(void *ptr)
471 /* struct rio_port *port = ptr; */
477 /* Jeez. Isn't this simple? */
478 static int rio_carrier_raised(struct tty_port *port)
480 struct Port *PortP = container_of(port, struct Port, gs.port);
484 rv = (PortP->ModemState & RIOC_MSVR1_CD) != 0;
486 rio_dprintk(RIO_DEBUG_INIT, "Getting CD status: %d\n", rv);
493 /* Jeez. Isn't this simple? Actually, we can sync with the actual port
494 by just pushing stuff into the queue going to the port... */
495 static int rio_chars_in_buffer(void *ptr)
504 /* Nothing special here... */
505 static void rio_shutdown_port(void *ptr)
511 PortP = (struct Port *) ptr;
512 PortP->gs.port.tty = NULL;
517 /* I haven't the foggiest why the decrement use count has to happen
518 here. The whole linux serial drivers stuff needs to be redesigned.
519 My guess is that this is a hack to minimize the impact of a bug
520 elsewhere. Thinking about it some more. (try it sometime) Try
521 running minicom on a serial port that is driven by a modularized
522 driver. Have the modem hangup. Then remove the driver module. Then
523 exit minicom. I expect an "oops". -- REW */
524 static void rio_hungup(void *ptr)
530 PortP = (struct Port *) ptr;
531 PortP->gs.port.tty = NULL;
537 /* The standard serial_close would become shorter if you'd wrap it like
539 rs_close (...){save_flags;cli;real_close();dec_use_count;restore_flags;}
541 static void rio_close(void *ptr)
547 PortP = (struct Port *) ptr;
551 if (PortP->gs.port.count) {
552 printk(KERN_ERR "WARNING port count:%d\n", PortP->gs.port.count);
553 PortP->gs.port.count = 0;
556 PortP->gs.port.tty = NULL;
562 static long rio_fw_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
567 /* The "dev" argument isn't used. */
569 rc = riocontrol(p, 0, cmd, arg, capable(CAP_SYS_ADMIN));
576 extern int RIOShortCommand(struct rio_info *p, struct Port *PortP, int command, int len, int arg);
578 static int rio_ioctl(struct tty_struct *tty, struct file *filp, unsigned int cmd, unsigned long arg)
580 void __user *argp = (void __user *)arg;
587 PortP = (struct Port *) tty->driver_data;
592 if ((rc = get_user(ival, (unsigned __user *) argp)) == 0) {
593 tty->termios->c_cflag = (tty->termios->c_cflag & ~CLOCAL) | (ival ? CLOCAL : 0);
598 if (access_ok(VERIFY_WRITE, argp, sizeof(struct serial_struct)))
599 rc = gs_getserial(&PortP->gs, argp);
602 if (PortP->State & RIO_DELETED) {
603 rio_dprintk(RIO_DEBUG_TTY, "BREAK on deleted RTA\n");
606 if (RIOShortCommand(p, PortP, RIOC_SBREAK, 2, 250) ==
608 rio_dprintk(RIO_DEBUG_INTR, "SBREAK RIOShortCommand failed\n");
614 if (PortP->State & RIO_DELETED) {
615 rio_dprintk(RIO_DEBUG_TTY, "BREAK on deleted RTA\n");
619 l = arg ? arg * 100 : 250;
622 if (RIOShortCommand(p, PortP, RIOC_SBREAK, 2,
623 arg ? arg * 100 : 250) == RIO_FAIL) {
624 rio_dprintk(RIO_DEBUG_INTR, "SBREAK RIOShortCommand failed\n");
631 if (access_ok(VERIFY_READ, argp, sizeof(struct serial_struct)))
632 rc = gs_setserial(&PortP->gs, argp);
643 /* The throttle/unthrottle scheme for the Specialix card is different
644 * from other drivers and deserves some explanation.
645 * The Specialix hardware takes care of XON/XOFF
646 * and CTS/RTS flow control itself. This means that all we have to
647 * do when signalled by the upper tty layer to throttle/unthrottle is
648 * to make a note of it here. When we come to read characters from the
649 * rx buffers on the card (rio_receive_chars()) we look to see if the
650 * upper layer can accept more (as noted here in rio_rx_throt[]).
651 * If it can't we simply don't remove chars from the cards buffer.
652 * When the tty layer can accept chars, we again note that here and when
653 * rio_receive_chars() is called it will remove them from the cards buffer.
654 * The card will notice that a ports buffer has drained below some low
655 * water mark and will unflow control the line itself, using whatever
656 * flow control scheme is in use for that port. -- Simon Allen
659 static void rio_throttle(struct tty_struct *tty)
661 struct Port *port = (struct Port *) tty->driver_data;
664 /* If the port is using any type of input flow
665 * control then throttle the port.
668 if ((tty->termios->c_cflag & CRTSCTS) || (I_IXOFF(tty))) {
669 port->State |= RIO_THROTTLE_RX;
676 static void rio_unthrottle(struct tty_struct *tty)
678 struct Port *port = (struct Port *) tty->driver_data;
681 /* Always unthrottle even if flow control is not enabled on
682 * this port in case we disabled flow control while the port
686 port->State &= ~RIO_THROTTLE_RX;
696 /* ********************************************************************** *
697 * Here are the initialization routines. *
698 * ********************************************************************** */
701 static struct vpd_prom *get_VPD_PROM(struct Host *hp)
703 static struct vpd_prom vpdp;
708 rio_dprintk(RIO_DEBUG_PROBE, "Going to verify vpd prom at %p.\n", hp->Caddr + RIO_VPD_ROM);
711 for (i = 0; i < sizeof(struct vpd_prom); i++)
712 *p++ = readb(hp->Caddr + RIO_VPD_ROM + i * 2);
713 /* read_rio_byte (hp, RIO_VPD_ROM + i*2); */
715 /* Terminate the identifier string.
716 *** requires one extra byte in struct vpd_prom *** */
719 if (rio_debug & RIO_DEBUG_PROBE)
720 my_hd((char *) &vpdp, 0x20);
727 static const struct tty_operations rio_ops = {
731 .put_char = gs_put_char,
732 .flush_chars = gs_flush_chars,
733 .write_room = gs_write_room,
734 .chars_in_buffer = gs_chars_in_buffer,
735 .flush_buffer = gs_flush_buffer,
737 .throttle = rio_throttle,
738 .unthrottle = rio_unthrottle,
739 .set_termios = gs_set_termios,
745 static int rio_init_drivers(void)
749 rio_driver = alloc_tty_driver(256);
752 rio_driver2 = alloc_tty_driver(256);
758 rio_driver->owner = THIS_MODULE;
759 rio_driver->driver_name = "specialix_rio";
760 rio_driver->name = "ttySR";
761 rio_driver->major = RIO_NORMAL_MAJOR0;
762 rio_driver->type = TTY_DRIVER_TYPE_SERIAL;
763 rio_driver->subtype = SERIAL_TYPE_NORMAL;
764 rio_driver->init_termios = tty_std_termios;
765 rio_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
766 rio_driver->flags = TTY_DRIVER_REAL_RAW;
767 tty_set_operations(rio_driver, &rio_ops);
769 rio_driver2->owner = THIS_MODULE;
770 rio_driver2->driver_name = "specialix_rio";
771 rio_driver2->name = "ttySR";
772 rio_driver2->major = RIO_NORMAL_MAJOR1;
773 rio_driver2->type = TTY_DRIVER_TYPE_SERIAL;
774 rio_driver2->subtype = SERIAL_TYPE_NORMAL;
775 rio_driver2->init_termios = tty_std_termios;
776 rio_driver2->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
777 rio_driver2->flags = TTY_DRIVER_REAL_RAW;
778 tty_set_operations(rio_driver2, &rio_ops);
780 rio_dprintk(RIO_DEBUG_INIT, "set_termios = %p\n", gs_set_termios);
782 if ((error = tty_register_driver(rio_driver)))
784 if ((error = tty_register_driver(rio_driver2)))
789 tty_unregister_driver(rio_driver);
791 put_tty_driver(rio_driver2);
793 put_tty_driver(rio_driver);
795 printk(KERN_ERR "rio: Couldn't register a rio driver, error = %d\n", error);
799 static const struct tty_port_operations rio_port_ops = {
800 .carrier_raised = rio_carrier_raised,
803 static int rio_init_datastructures(void)
809 /* Many drivers statically allocate the maximum number of ports
810 There is no reason not to allocate them dynamically. Is there? -- REW */
811 /* However, the RIO driver allows users to configure their first
812 RTA as the ports numbered 504-511. We therefore need to allocate
813 the whole range. :-( -- REW */
815 #define RI_SZ sizeof(struct rio_info)
816 #define HOST_SZ sizeof(struct Host)
817 #define PORT_SZ sizeof(struct Port *)
818 #define TMIO_SZ sizeof(struct termios *)
819 rio_dprintk(RIO_DEBUG_INIT, "getting : %Zd %Zd %Zd %Zd %Zd bytes\n", RI_SZ, RIO_HOSTS * HOST_SZ, RIO_PORTS * PORT_SZ, RIO_PORTS * TMIO_SZ, RIO_PORTS * TMIO_SZ);
821 if (!(p = kzalloc(RI_SZ, GFP_KERNEL)))
823 if (!(p->RIOHosts = kzalloc(RIO_HOSTS * HOST_SZ, GFP_KERNEL)))
825 if (!(p->RIOPortp = kzalloc(RIO_PORTS * PORT_SZ, GFP_KERNEL)))
827 p->RIOConf = RIOConf;
828 rio_dprintk(RIO_DEBUG_INIT, "Got : %p %p %p\n", p, p->RIOHosts, p->RIOPortp);
831 for (i = 0; i < RIO_PORTS; i++) {
832 port = p->RIOPortp[i] = kzalloc(sizeof(struct Port), GFP_KERNEL);
836 rio_dprintk(RIO_DEBUG_INIT, "initing port %d (%d)\n", i, port->Mapped);
837 tty_port_init(&port->gs.port);
838 port->gs.port.ops = &rio_port_ops;
840 port->gs.magic = RIO_MAGIC;
841 port->gs.close_delay = HZ / 2;
842 port->gs.closing_wait = 30 * HZ;
843 port->gs.rd = &rio_real_driver;
844 spin_lock_init(&port->portSem);
847 /* We could postpone initializing them to when they are configured. */
852 if (rio_debug & RIO_DEBUG_INIT) {
853 my_hd(&rio_real_driver, sizeof(rio_real_driver));
860 free6:for (i--; i >= 0; i--)
861 kfree(p->RIOPortp[i]);
864 free3:*/ kfree(p->RIOPortp);
865 free2:kfree(p->RIOHosts);
867 rio_dprintk(RIO_DEBUG_INIT, "Not enough memory! %p %p %p\n", p, p->RIOHosts, p->RIOPortp);
873 static void __exit rio_release_drivers(void)
876 tty_unregister_driver(rio_driver2);
877 tty_unregister_driver(rio_driver);
878 put_tty_driver(rio_driver2);
879 put_tty_driver(rio_driver);
885 /* This was written for SX, but applies to RIO too...
888 There is another bit besides Bit 17. Turning that bit off
889 (on boards shipped with the fix in the eeprom) results in a
890 hang on the next access to the card.
893 /********************************************************
894 * Setting bit 17 in the CNTRL register of the PLX 9050 *
895 * chip forces a retry on writes while a read is pending.*
896 * This is to prevent the card locking up on Intel Xeon *
897 * multiprocessor systems with the NX chipset. -- NV *
898 ********************************************************/
900 /* Newer cards are produced with this bit set from the configuration
901 EEprom. As the bit is read/write for the CPU, we can fix it here,
902 if we detect that it isn't set correctly. -- REW */
904 static void fix_rio_pci(struct pci_dev *pdev)
906 unsigned long hwbase;
907 unsigned char __iomem *rebase;
910 #define CNTRL_REG_OFFSET 0x50
911 #define CNTRL_REG_GOODVALUE 0x18260000
913 hwbase = pci_resource_start(pdev, 0);
914 rebase = ioremap(hwbase, 0x80);
915 t = readl(rebase + CNTRL_REG_OFFSET);
916 if (t != CNTRL_REG_GOODVALUE) {
917 printk(KERN_DEBUG "rio: performing cntrl reg fix: %08x -> %08x\n", t, CNTRL_REG_GOODVALUE);
918 writel(CNTRL_REG_GOODVALUE, rebase + CNTRL_REG_OFFSET);
925 static int __init rio_init(void)
931 struct vpd_prom *vpdp;
935 struct pci_dev *pdev = NULL;
936 unsigned short tshort;
940 rio_dprintk(RIO_DEBUG_INIT, "Initing rio module... (rio_debug=%d)\n", rio_debug);
942 if (abs((long) (&rio_debug) - rio_debug) < 0x10000) {
943 printk(KERN_WARNING "rio: rio_debug is an address, instead of a value. " "Assuming -1. Was %x/%p.\n", rio_debug, &rio_debug);
947 if (misc_register(&rio_fw_device) < 0) {
948 printk(KERN_ERR "RIO: Unable to register firmware loader driver.\n");
952 retval = rio_init_datastructures();
954 misc_deregister(&rio_fw_device);
958 /* First look for the JET devices: */
959 while ((pdev = pci_get_device(PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8, pdev))) {
962 if (pci_enable_device(pdev))
965 /* Specialix has a whole bunch of cards with
966 0x2000 as the device ID. They say its because
967 the standard requires it. Stupid standard. */
968 /* It seems that reading a word doesn't work reliably on 2.0.
969 Also, reading a non-aligned dword doesn't work. So we read the
970 whole dword at 0x2c and extract the word at 0x2e (SUBSYSTEM_ID)
972 pci_read_config_dword(pdev, 0x2c, &tint);
973 tshort = (tint >> 16) & 0xffff;
974 rio_dprintk(RIO_DEBUG_PROBE, "Got a specialix card: %x.\n", tint);
975 if (tshort != 0x0100) {
976 rio_dprintk(RIO_DEBUG_PROBE, "But it's not a RIO card (%d)...\n", tshort);
979 rio_dprintk(RIO_DEBUG_PROBE, "cp1\n");
981 hp = &p->RIOHosts[p->RIONumHosts];
982 hp->PaddrP = pci_resource_start(pdev, 2);
983 hp->Ivec = pdev->irq;
984 if (((1 << hp->Ivec) & rio_irqmask) == 0)
986 hp->Caddr = ioremap(p->RIOHosts[p->RIONumHosts].PaddrP, RIO_WINDOW_LEN);
987 hp->CardP = (struct DpRam __iomem *) hp->Caddr;
989 hp->Copy = rio_copy_to_card;
990 hp->Mode = RIO_PCI_BOOT_FROM_RAM;
991 spin_lock_init(&hp->HostLock);
992 rio_reset_interrupt(hp);
993 rio_start_card_running(hp);
995 rio_dprintk(RIO_DEBUG_PROBE, "Going to test it (%p/%p).\n", (void *) p->RIOHosts[p->RIONumHosts].PaddrP, p->RIOHosts[p->RIONumHosts].Caddr);
996 if (RIOBoardTest(p->RIOHosts[p->RIONumHosts].PaddrP, p->RIOHosts[p->RIONumHosts].Caddr, RIO_PCI, 0) == 0) {
997 rio_dprintk(RIO_DEBUG_INIT, "Done RIOBoardTest\n");
998 writeb(0xFF, &p->RIOHosts[p->RIONumHosts].ResetInt);
999 p->RIOHosts[p->RIONumHosts].UniqueNum =
1000 ((readb(&p->RIOHosts[p->RIONumHosts].Unique[0]) & 0xFF) << 0) |
1001 ((readb(&p->RIOHosts[p->RIONumHosts].Unique[1]) & 0xFF) << 8) | ((readb(&p->RIOHosts[p->RIONumHosts].Unique[2]) & 0xFF) << 16) | ((readb(&p->RIOHosts[p->RIONumHosts].Unique[3]) & 0xFF) << 24);
1002 rio_dprintk(RIO_DEBUG_PROBE, "Hmm Tested ok, uniqid = %x.\n", p->RIOHosts[p->RIONumHosts].UniqueNum);
1006 p->RIOHosts[p->RIONumHosts].pdev = pdev;
1009 p->RIOLastPCISearch = 0;
1013 iounmap(p->RIOHosts[p->RIONumHosts].Caddr);
1014 p->RIOHosts[p->RIONumHosts].Caddr = NULL;
1018 /* Then look for the older PCI card.... : */
1020 /* These older PCI cards have problems (only byte-mode access is
1021 supported), which makes them a bit awkward to support.
1022 They also have problems sharing interrupts. Be careful.
1023 (The driver now refuses to share interrupts for these
1024 cards. This should be sufficient).
1027 /* Then look for the older RIO/PCI devices: */
1028 while ((pdev = pci_get_device(PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_SPECIALIX_RIO, pdev))) {
1029 if (pci_enable_device(pdev))
1032 #ifdef CONFIG_RIO_OLDPCI
1033 hp = &p->RIOHosts[p->RIONumHosts];
1034 hp->PaddrP = pci_resource_start(pdev, 0);
1035 hp->Ivec = pdev->irq;
1036 if (((1 << hp->Ivec) & rio_irqmask) == 0)
1038 hp->Ivec |= 0x8000; /* Mark as non-sharable */
1039 hp->Caddr = ioremap(p->RIOHosts[p->RIONumHosts].PaddrP, RIO_WINDOW_LEN);
1040 hp->CardP = (struct DpRam __iomem *) hp->Caddr;
1042 hp->Copy = rio_copy_to_card;
1043 hp->Mode = RIO_PCI_BOOT_FROM_RAM;
1044 spin_lock_init(&hp->HostLock);
1046 rio_dprintk(RIO_DEBUG_PROBE, "Ivec: %x\n", hp->Ivec);
1047 rio_dprintk(RIO_DEBUG_PROBE, "Mode: %x\n", hp->Mode);
1049 rio_reset_interrupt(hp);
1050 rio_start_card_running(hp);
1051 rio_dprintk(RIO_DEBUG_PROBE, "Going to test it (%p/%p).\n", (void *) p->RIOHosts[p->RIONumHosts].PaddrP, p->RIOHosts[p->RIONumHosts].Caddr);
1052 if (RIOBoardTest(p->RIOHosts[p->RIONumHosts].PaddrP, p->RIOHosts[p->RIONumHosts].Caddr, RIO_PCI, 0) == 0) {
1053 writeb(0xFF, &p->RIOHosts[p->RIONumHosts].ResetInt);
1054 p->RIOHosts[p->RIONumHosts].UniqueNum =
1055 ((readb(&p->RIOHosts[p->RIONumHosts].Unique[0]) & 0xFF) << 0) |
1056 ((readb(&p->RIOHosts[p->RIONumHosts].Unique[1]) & 0xFF) << 8) | ((readb(&p->RIOHosts[p->RIONumHosts].Unique[2]) & 0xFF) << 16) | ((readb(&p->RIOHosts[p->RIONumHosts].Unique[3]) & 0xFF) << 24);
1057 rio_dprintk(RIO_DEBUG_PROBE, "Hmm Tested ok, uniqid = %x.\n", p->RIOHosts[p->RIONumHosts].UniqueNum);
1059 p->RIOHosts[p->RIONumHosts].pdev = pdev;
1062 p->RIOLastPCISearch = 0;
1066 iounmap(p->RIOHosts[p->RIONumHosts].Caddr);
1067 p->RIOHosts[p->RIONumHosts].Caddr = NULL;
1070 printk(KERN_ERR "Found an older RIO PCI card, but the driver is not " "compiled to support it.\n");
1075 /* Now probe for ISA cards... */
1076 for (i = 0; i < NR_RIO_ADDRS; i++) {
1077 hp = &p->RIOHosts[p->RIONumHosts];
1078 hp->PaddrP = rio_probe_addrs[i];
1079 /* There was something about the IRQs of these cards. 'Forget what.--REW */
1081 hp->Caddr = ioremap(p->RIOHosts[p->RIONumHosts].PaddrP, RIO_WINDOW_LEN);
1082 hp->CardP = (struct DpRam __iomem *) hp->Caddr;
1084 hp->Copy = rio_copy_to_card; /* AT card PCI???? - PVDL
1085 * -- YES! this is now a normal copy. Only the
1086 * old PCI card uses the special PCI copy.
1087 * Moreover, the ISA card will work with the
1088 * special PCI copy anyway. -- REW */
1090 spin_lock_init(&hp->HostLock);
1092 vpdp = get_VPD_PROM(hp);
1093 rio_dprintk(RIO_DEBUG_PROBE, "Got VPD ROM\n");
1095 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)) {
1096 /* Board is present... */
1097 if (RIOBoardTest(hp->PaddrP, hp->Caddr, RIO_AT, 0) == 0) {
1098 /* ... and feeling fine!!!! */
1099 rio_dprintk(RIO_DEBUG_PROBE, "Hmm Tested ok, uniqid = %x.\n", p->RIOHosts[p->RIONumHosts].UniqueNum);
1100 if (RIOAssignAT(p, hp->PaddrP, hp->Caddr, 0)) {
1101 rio_dprintk(RIO_DEBUG_PROBE, "Hmm Tested ok, host%d uniqid = %x.\n", p->RIONumHosts, p->RIOHosts[p->RIONumHosts - 1].UniqueNum);
1115 for (i = 0; i < p->RIONumHosts; i++) {
1116 hp = &p->RIOHosts[i];
1118 int mode = IRQF_SHARED;
1119 if (hp->Ivec & 0x8000) {
1123 rio_dprintk(RIO_DEBUG_INIT, "Requesting interrupt hp: %p rio_interrupt: %d Mode: %x\n", hp, hp->Ivec, hp->Mode);
1124 retval = request_irq(hp->Ivec, rio_interrupt, mode, "rio", hp);
1125 rio_dprintk(RIO_DEBUG_INIT, "Return value from request_irq: %d\n", retval);
1127 printk(KERN_ERR "rio: Cannot allocate irq %d.\n", hp->Ivec);
1130 rio_dprintk(RIO_DEBUG_INIT, "Got irq %d.\n", hp->Ivec);
1131 if (hp->Ivec != 0) {
1132 rio_dprintk(RIO_DEBUG_INIT, "Enabling interrupts on rio card.\n");
1133 hp->Mode |= RIO_PCI_INT_ENABLE;
1135 hp->Mode &= ~RIO_PCI_INT_ENABLE;
1136 rio_dprintk(RIO_DEBUG_INIT, "New Mode: %x\n", hp->Mode);
1137 rio_start_card_running(hp);
1139 /* Init the timer "always" to make sure that it can safely be
1140 deleted when we unload... */
1142 setup_timer(&hp->timer, rio_pollfunc, i);
1144 rio_dprintk(RIO_DEBUG_INIT, "Starting polling at %dj intervals.\n", rio_poll);
1145 mod_timer(&hp->timer, jiffies + rio_poll);
1150 rio_dprintk(RIO_DEBUG_INIT, "rio: total of %d boards detected.\n", found);
1153 /* deregister the misc device we created earlier */
1154 misc_deregister(&rio_fw_device);
1158 return found ? 0 : -EIO;
1162 static void __exit rio_exit(void)
1169 for (i = 0, hp = p->RIOHosts; i < p->RIONumHosts; i++, hp++) {
1170 RIOHostReset(hp->Type, hp->CardP, hp->Slot);
1172 free_irq(hp->Ivec, hp);
1173 rio_dprintk(RIO_DEBUG_INIT, "freed irq %d.\n", hp->Ivec);
1175 /* It is safe/allowed to del_timer a non-active timer */
1176 del_timer_sync(&hp->timer);
1179 if (hp->Type == RIO_PCI)
1180 pci_dev_put(hp->pdev);
1183 if (misc_deregister(&rio_fw_device) < 0) {
1184 printk(KERN_INFO "rio: couldn't deregister control-device\n");
1188 rio_dprintk(RIO_DEBUG_CLEANUP, "Cleaning up drivers\n");
1190 rio_release_drivers();
1192 /* Release dynamically allocated memory */
1200 module_init(rio_init);
1201 module_exit(rio_exit);