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 #include "linux_compat.h"
89 #include "rio_linux.h"
91 /* I don't think that this driver can handle more than 512 ports on
92 one machine. Specialix specifies max 4 boards in one machine. I don't
93 know why. If you want to try anyway you'll have to increase the number
94 of boards in rio.h. You'll have to allocate more majors if you need
95 more than 512 ports.... */
97 #ifndef RIO_NORMAL_MAJOR0
98 /* This allows overriding on the compiler commandline, or in a "major.h"
99 include or something like that */
100 #define RIO_NORMAL_MAJOR0 154
101 #define RIO_NORMAL_MAJOR1 156
104 #ifndef PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8
105 #define PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8 0x2000
108 #ifndef RIO_WINDOW_LEN
109 #define RIO_WINDOW_LEN 0x10000
113 /* Configurable options:
114 (Don't be too sure that it'll work if you toggle them) */
116 /* Am I paranoid or not ? ;-) */
117 #undef RIO_PARANOIA_CHECK
120 /* 20 -> 2000 per second. The card should rate-limit interrupts at 1000
121 Hz, but it is user configurable. I don't recommend going above 1000
122 Hz. The interrupt ratelimit might trigger if the interrupt is
123 shared with a very active other device.
124 undef this if you want to disable the check....
126 #define IRQ_RATE_LIMIT 200
129 /* These constants are derived from SCO Source */
132 /* locator */ "RIO Config here",
133 /* startuptime */ HZ * 2,
134 /* how long to wait for card to run */
136 /* TRUE -> always use line disc. */
137 /* intrpolltime */ 1,
138 /* The frequency of OUR polls */
139 /* breakinterval */ 25,
140 /* x10 mS XXX: units seem to be 1ms not 10! -- REW */
143 /* RtaLoadBase */ 0x7000,
144 /* HostLoadBase */ 0x7C00,
146 /* number of Xprint hits per second */
148 /* Xprint characters per second */
150 /* start Xprint for a wyse 60 */
152 /* end Xprint for a wyse 60 */
154 /* highest Xprint speed */
156 /* slowest Xprint speed */
158 /* non-zero for mega fast boots */
159 /* First Addr */ 0x0A0000,
160 /* First address to look at */
161 /* Last Addr */ 0xFF0000,
162 /* Last address looked at */
163 /* BufferSize */ 1024,
164 /* Bytes per port of buffering */
166 /* how much data left before wakeup */
168 /* how wide is the console? */
170 /* how long a close command may take */
176 /* Function prototypes */
178 static void rio_disable_tx_interrupts(void *ptr);
179 static void rio_enable_tx_interrupts(void *ptr);
180 static void rio_disable_rx_interrupts(void *ptr);
181 static void rio_enable_rx_interrupts(void *ptr);
182 static int rio_get_CD(void *ptr);
183 static void rio_shutdown_port(void *ptr);
184 static int rio_set_real_termios(void *ptr);
185 static void rio_hungup(void *ptr);
186 static void rio_close(void *ptr);
187 static int rio_chars_in_buffer(void *ptr);
188 static int rio_fw_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg);
189 static int rio_init_drivers(void);
191 static void my_hd(void *addr, int len);
193 static struct tty_driver *rio_driver, *rio_driver2;
195 /* The name "p" is a bit non-descript. But that's what the rio-lynxos
196 sources use all over the place. */
202 /* You can have the driver poll your card.
203 - Set rio_poll to 1 to poll every timer tick (10ms on Intel).
204 This is used when the card cannot use an interrupt for some reason.
206 static int rio_poll = 1;
209 /* These are the only open spaces in my computer. Yours may have more
211 static int rio_probe_addrs[] = { 0xc0000, 0xd0000, 0xe0000 };
213 #define NR_RIO_ADDRS ARRAY_SIZE(rio_probe_addrs)
216 /* Set the mask to all-ones. This alas, only supports 32 interrupts.
217 Some architectures may need more. -- Changed to LONG to
218 support up to 64 bits on 64bit architectures. -- REW 20/06/99 */
219 static long rio_irqmask = -1;
221 MODULE_AUTHOR("Rogier Wolff <R.E.Wolff@bitwizard.nl>, Patrick van de Lageweg <patrick@bitwizard.nl>");
222 MODULE_DESCRIPTION("RIO driver");
223 MODULE_LICENSE("GPL");
224 module_param(rio_poll, int, 0);
225 module_param(rio_debug, int, 0644);
226 module_param(rio_irqmask, long, 0);
228 static struct real_driver rio_real_driver = {
229 rio_disable_tx_interrupts,
230 rio_enable_tx_interrupts,
231 rio_disable_rx_interrupts,
232 rio_enable_rx_interrupts,
235 rio_set_real_termios,
243 * Firmware loader driver specific routines
247 static struct file_operations rio_fw_fops = {
248 .owner = THIS_MODULE,
249 .ioctl = rio_fw_ioctl,
252 static struct miscdevice rio_fw_device = {
253 RIOCTL_MISC_MINOR, "rioctl", &rio_fw_fops
260 #ifdef RIO_PARANOIA_CHECK
262 /* This doesn't work. Who's paranoid around here? Not me! */
264 static inline int rio_paranoia_check(struct rio_port const *port, char *name, const char *routine)
267 static const char *badmagic = KERN_ERR "rio: Warning: bad rio port magic number for device %s in %s\n";
268 static const char *badinfo = KERN_ERR "rio: Warning: null rio port for device %s in %s\n";
271 printk(badinfo, name, routine);
274 if (port->magic != RIO_MAGIC) {
275 printk(badmagic, name, routine);
282 #define rio_paranoia_check(a,b,c) 0
287 static void my_hd(void *ad, int len)
290 unsigned char *addr = ad;
292 for (i = 0; i < len; i += 16) {
293 rio_dprintk(RIO_DEBUG_PARAM, "%08lx ", (unsigned long) addr + i);
294 for (j = 0; j < 16; j++) {
295 rio_dprintk(RIO_DEBUG_PARAM, "%02x %s", addr[j + i], (j == 7) ? " " : "");
297 for (j = 0; j < 16; j++) {
299 rio_dprintk(RIO_DEBUG_PARAM, "%c", (ch < 0x20) ? '.' : ((ch > 0x7f) ? '.' : ch));
301 rio_dprintk(RIO_DEBUG_PARAM, "\n");
305 #define my_hd(ad,len) do{/* nothing*/ } while (0)
309 /* Delay a number of jiffies, allowing a signal to interrupt */
310 int RIODelay(struct Port *PortP, int njiffies)
314 rio_dprintk(RIO_DEBUG_DELAY, "delaying %d jiffies\n", njiffies);
315 msleep_interruptible(jiffies_to_msecs(njiffies));
318 if (signal_pending(current))
325 /* Delay a number of jiffies, disallowing a signal to interrupt */
326 int RIODelay_ni(struct Port *PortP, int njiffies)
330 rio_dprintk(RIO_DEBUG_DELAY, "delaying %d jiffies (ni)\n", njiffies);
331 msleep(jiffies_to_msecs(njiffies));
336 void rio_copy_to_card(void *from, void __iomem *to, int len)
338 rio_copy_toio(to, from, len);
341 int rio_minor(struct tty_struct *tty)
343 return tty->index + (tty->driver == rio_driver) ? 0 : 256;
346 static int rio_set_real_termios(void *ptr)
348 return RIOParam((struct Port *) ptr, CONFIG, 1, 1);
352 static void rio_reset_interrupt(struct Host *HostP)
356 switch (HostP->Type) {
360 writeb(0xFF, &HostP->ResetInt);
367 static irqreturn_t rio_interrupt(int irq, void *ptr, struct pt_regs *regs)
372 HostP = (struct Host *) ptr; /* &p->RIOHosts[(long)ptr]; */
373 rio_dprintk(RIO_DEBUG_IFLOW, "rio: enter rio_interrupt (%d/%d)\n", irq, HostP->Ivec);
375 /* AAargh! The order in which to do these things is essential and
378 - hardware twiddling goes before "recursive". Otherwise when we
379 poll the card, and a recursive interrupt happens, we won't
380 ack the card, so it might keep on interrupting us. (especially
381 level sensitive interrupt systems like PCI).
383 - Rate limit goes before hardware twiddling. Otherwise we won't
384 catch a card that has gone bonkers.
386 - The "initialized" test goes after the hardware twiddling. Otherwise
387 the card will stick us in the interrupt routine again.
389 - The initialized test goes before recursive.
392 rio_dprintk(RIO_DEBUG_IFLOW, "rio: We've have noticed the interrupt\n");
393 if (HostP->Ivec == irq) {
394 /* Tell the card we've noticed the interrupt. */
395 rio_reset_interrupt(HostP);
398 if ((HostP->Flags & RUN_STATE) != RC_RUNNING)
401 if (test_and_set_bit(RIO_BOARD_INTR_LOCK, &HostP->locks)) {
402 printk(KERN_ERR "Recursive interrupt! (host %p/irq%d)\n", ptr, HostP->Ivec);
406 RIOServiceHost(p, HostP, irq);
408 rio_dprintk(RIO_DEBUG_IFLOW, "riointr() doing host %p type %d\n", ptr, HostP->Type);
410 clear_bit(RIO_BOARD_INTR_LOCK, &HostP->locks);
411 rio_dprintk(RIO_DEBUG_IFLOW, "rio: exit rio_interrupt (%d/%d)\n", irq, HostP->Ivec);
417 static void rio_pollfunc(unsigned long data)
421 rio_interrupt(0, &p->RIOHosts[data], NULL);
422 p->RIOHosts[data].timer.expires = jiffies + rio_poll;
423 add_timer(&p->RIOHosts[data].timer);
429 /* ********************************************************************** *
430 * Here are the routines that actually *
431 * interface with the generic_serial driver *
432 * ********************************************************************** */
434 /* Ehhm. I don't know how to fiddle with interrupts on the Specialix
435 cards. .... Hmm. Ok I figured it out. You don't. -- REW */
437 static void rio_disable_tx_interrupts(void *ptr)
441 /* port->gs.flags &= ~GS_TX_INTEN; */
447 static void rio_enable_tx_interrupts(void *ptr)
449 struct Port *PortP = ptr;
454 /* hn = PortP->HostP - p->RIOHosts;
456 rio_dprintk (RIO_DEBUG_TTY, "Pushing host %d\n", hn);
457 rio_interrupt (-1,(void *) hn, NULL); */
459 RIOTxEnable((char *) PortP);
462 * In general we cannot count on "tx empty" interrupts, although
463 * the interrupt routine seems to be able to tell the difference.
465 PortP->gs.flags &= ~GS_TX_INTEN;
471 static void rio_disable_rx_interrupts(void *ptr)
477 static void rio_enable_rx_interrupts(void *ptr)
479 /* struct rio_port *port = ptr; */
485 /* Jeez. Isn't this simple? */
486 static int rio_get_CD(void *ptr)
488 struct Port *PortP = ptr;
492 rv = (PortP->ModemState & MSVR1_CD) != 0;
494 rio_dprintk(RIO_DEBUG_INIT, "Getting CD status: %d\n", rv);
501 /* Jeez. Isn't this simple? Actually, we can sync with the actual port
502 by just pushing stuff into the queue going to the port... */
503 static int rio_chars_in_buffer(void *ptr)
512 /* Nothing special here... */
513 static void rio_shutdown_port(void *ptr)
519 PortP = (struct Port *) ptr;
520 PortP->gs.tty = NULL;
525 /* I haven't the foggiest why the decrement use count has to happen
526 here. The whole linux serial drivers stuff needs to be redesigned.
527 My guess is that this is a hack to minimize the impact of a bug
528 elsewhere. Thinking about it some more. (try it sometime) Try
529 running minicom on a serial port that is driven by a modularized
530 driver. Have the modem hangup. Then remove the driver module. Then
531 exit minicom. I expect an "oops". -- REW */
532 static void rio_hungup(void *ptr)
538 PortP = (struct Port *) ptr;
539 PortP->gs.tty = NULL;
545 /* The standard serial_close would become shorter if you'd wrap it like
547 rs_close (...){save_flags;cli;real_close();dec_use_count;restore_flags;}
549 static void rio_close(void *ptr)
555 PortP = (struct Port *) ptr;
559 if (PortP->gs.count) {
560 printk(KERN_ERR "WARNING port count:%d\n", PortP->gs.count);
564 PortP->gs.tty = NULL;
570 static int rio_fw_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg)
575 /* The "dev" argument isn't used. */
576 rc = riocontrol(p, 0, cmd, arg, capable(CAP_SYS_ADMIN));
582 extern int RIOShortCommand(struct rio_info *p, struct Port *PortP, int command, int len, int arg);
584 static int rio_ioctl(struct tty_struct *tty, struct file *filp, unsigned int cmd, unsigned long arg)
586 void __user *argp = (void __user *)arg;
593 PortP = (struct Port *) tty->driver_data;
598 if ((rc = get_user(ival, (unsigned __user *) argp)) == 0) {
599 tty->termios->c_cflag = (tty->termios->c_cflag & ~CLOCAL) | (ival ? CLOCAL : 0);
604 if (access_ok(VERIFY_WRITE, argp, sizeof(struct serial_struct)))
605 rc = gs_getserial(&PortP->gs, argp);
608 if (PortP->State & RIO_DELETED) {
609 rio_dprintk(RIO_DEBUG_TTY, "BREAK on deleted RTA\n");
612 if (RIOShortCommand(p, PortP, SBREAK, 2, 250) == RIO_FAIL) {
613 rio_dprintk(RIO_DEBUG_INTR, "SBREAK RIOShortCommand failed\n");
619 if (PortP->State & RIO_DELETED) {
620 rio_dprintk(RIO_DEBUG_TTY, "BREAK on deleted RTA\n");
624 l = arg ? arg * 100 : 250;
627 if (RIOShortCommand(p, PortP, SBREAK, 2, arg ? arg * 100 : 250) == RIO_FAIL) {
628 rio_dprintk(RIO_DEBUG_INTR, "SBREAK RIOShortCommand failed\n");
635 if (access_ok(VERIFY_READ, argp, sizeof(struct serial_struct)))
636 rc = gs_setserial(&PortP->gs, argp);
647 /* The throttle/unthrottle scheme for the Specialix card is different
648 * from other drivers and deserves some explanation.
649 * The Specialix hardware takes care of XON/XOFF
650 * and CTS/RTS flow control itself. This means that all we have to
651 * do when signalled by the upper tty layer to throttle/unthrottle is
652 * to make a note of it here. When we come to read characters from the
653 * rx buffers on the card (rio_receive_chars()) we look to see if the
654 * upper layer can accept more (as noted here in rio_rx_throt[]).
655 * If it can't we simply don't remove chars from the cards buffer.
656 * When the tty layer can accept chars, we again note that here and when
657 * rio_receive_chars() is called it will remove them from the cards buffer.
658 * The card will notice that a ports buffer has drained below some low
659 * water mark and will unflow control the line itself, using whatever
660 * flow control scheme is in use for that port. -- Simon Allen
663 static void rio_throttle(struct tty_struct *tty)
665 struct Port *port = (struct Port *) tty->driver_data;
668 /* If the port is using any type of input flow
669 * control then throttle the port.
672 if ((tty->termios->c_cflag & CRTSCTS) || (I_IXOFF(tty))) {
673 port->State |= RIO_THROTTLE_RX;
680 static void rio_unthrottle(struct tty_struct *tty)
682 struct Port *port = (struct Port *) tty->driver_data;
685 /* Always unthrottle even if flow control is not enabled on
686 * this port in case we disabled flow control while the port
690 port->State &= ~RIO_THROTTLE_RX;
700 /* ********************************************************************** *
701 * Here are the initialization routines. *
702 * ********************************************************************** */
705 static struct vpd_prom *get_VPD_PROM(struct Host *hp)
707 static struct vpd_prom vpdp;
712 rio_dprintk(RIO_DEBUG_PROBE, "Going to verify vpd prom at %p.\n", hp->Caddr + RIO_VPD_ROM);
715 for (i = 0; i < sizeof(struct vpd_prom); i++)
716 *p++ = readb(hp->Caddr + RIO_VPD_ROM + i * 2);
717 /* read_rio_byte (hp, RIO_VPD_ROM + i*2); */
719 /* Terminate the identifier string.
720 *** requires one extra byte in struct vpd_prom *** */
723 if (rio_debug & RIO_DEBUG_PROBE)
724 my_hd((char *) &vpdp, 0x20);
731 static struct tty_operations rio_ops = {
735 .put_char = gs_put_char,
736 .flush_chars = gs_flush_chars,
737 .write_room = gs_write_room,
738 .chars_in_buffer = gs_chars_in_buffer,
739 .flush_buffer = gs_flush_buffer,
741 .throttle = rio_throttle,
742 .unthrottle = rio_unthrottle,
743 .set_termios = gs_set_termios,
749 static int rio_init_drivers(void)
753 rio_driver = alloc_tty_driver(256);
756 rio_driver2 = alloc_tty_driver(256);
762 rio_driver->owner = THIS_MODULE;
763 rio_driver->driver_name = "specialix_rio";
764 rio_driver->name = "ttySR";
765 rio_driver->major = RIO_NORMAL_MAJOR0;
766 rio_driver->type = TTY_DRIVER_TYPE_SERIAL;
767 rio_driver->subtype = SERIAL_TYPE_NORMAL;
768 rio_driver->init_termios = tty_std_termios;
769 rio_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
770 rio_driver->flags = TTY_DRIVER_REAL_RAW;
771 tty_set_operations(rio_driver, &rio_ops);
773 rio_driver2->owner = THIS_MODULE;
774 rio_driver2->driver_name = "specialix_rio";
775 rio_driver2->name = "ttySR";
776 rio_driver2->major = RIO_NORMAL_MAJOR1;
777 rio_driver2->type = TTY_DRIVER_TYPE_SERIAL;
778 rio_driver2->subtype = SERIAL_TYPE_NORMAL;
779 rio_driver2->init_termios = tty_std_termios;
780 rio_driver2->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
781 rio_driver2->flags = TTY_DRIVER_REAL_RAW;
782 tty_set_operations(rio_driver2, &rio_ops);
784 rio_dprintk(RIO_DEBUG_INIT, "set_termios = %p\n", gs_set_termios);
786 if ((error = tty_register_driver(rio_driver)))
788 if ((error = tty_register_driver(rio_driver2)))
793 tty_unregister_driver(rio_driver);
795 put_tty_driver(rio_driver2);
797 put_tty_driver(rio_driver);
799 printk(KERN_ERR "rio: Couldn't register a rio driver, error = %d\n", error);
804 static void *ckmalloc(int size)
808 p = kmalloc(size, GFP_KERNEL);
816 static int rio_init_datastructures(void)
822 /* Many drivers statically allocate the maximum number of ports
823 There is no reason not to allocate them dynamically. Is there? -- REW */
824 /* However, the RIO driver allows users to configure their first
825 RTA as the ports numbered 504-511. We therefore need to allocate
826 the whole range. :-( -- REW */
828 #define RI_SZ sizeof(struct rio_info)
829 #define HOST_SZ sizeof(struct Host)
830 #define PORT_SZ sizeof(struct Port *)
831 #define TMIO_SZ sizeof(struct termios *)
832 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);
834 if (!(p = ckmalloc(RI_SZ)))
836 if (!(p->RIOHosts = ckmalloc(RIO_HOSTS * HOST_SZ)))
838 if (!(p->RIOPortp = ckmalloc(RIO_PORTS * PORT_SZ)))
840 p->RIOConf = RIOConf;
841 rio_dprintk(RIO_DEBUG_INIT, "Got : %p %p %p\n", p, p->RIOHosts, p->RIOPortp);
844 for (i = 0; i < RIO_PORTS; i++) {
845 port = p->RIOPortp[i] = ckmalloc(sizeof(struct Port));
849 rio_dprintk(RIO_DEBUG_INIT, "initing port %d (%d)\n", i, port->Mapped);
851 port->gs.magic = RIO_MAGIC;
852 port->gs.close_delay = HZ / 2;
853 port->gs.closing_wait = 30 * HZ;
854 port->gs.rd = &rio_real_driver;
855 spin_lock_init(&port->portSem);
857 * Initializing wait queue
859 init_waitqueue_head(&port->gs.open_wait);
860 init_waitqueue_head(&port->gs.close_wait);
863 /* We could postpone initializing them to when they are configured. */
868 if (rio_debug & RIO_DEBUG_INIT) {
869 my_hd(&rio_real_driver, sizeof(rio_real_driver));
876 free6:for (i--; i >= 0; i--)
877 kfree(p->RIOPortp[i]);
880 free3:*/ kfree(p->RIOPortp);
881 free2:kfree(p->RIOHosts);
883 rio_dprintk(RIO_DEBUG_INIT, "Not enough memory! %p %p %p\n", p, p->RIOHosts, p->RIOPortp);
889 static void __exit rio_release_drivers(void)
892 tty_unregister_driver(rio_driver2);
893 tty_unregister_driver(rio_driver);
894 put_tty_driver(rio_driver2);
895 put_tty_driver(rio_driver);
901 /* This was written for SX, but applies to RIO too...
904 There is another bit besides Bit 17. Turning that bit off
905 (on boards shipped with the fix in the eeprom) results in a
906 hang on the next access to the card.
909 /********************************************************
910 * Setting bit 17 in the CNTRL register of the PLX 9050 *
911 * chip forces a retry on writes while a read is pending.*
912 * This is to prevent the card locking up on Intel Xeon *
913 * multiprocessor systems with the NX chipset. -- NV *
914 ********************************************************/
916 /* Newer cards are produced with this bit set from the configuration
917 EEprom. As the bit is read/write for the CPU, we can fix it here,
918 if we detect that it isn't set correctly. -- REW */
920 static void fix_rio_pci(struct pci_dev *pdev)
922 unsigned long hwbase;
923 unsigned char __iomem *rebase;
926 #define CNTRL_REG_OFFSET 0x50
927 #define CNTRL_REG_GOODVALUE 0x18260000
929 hwbase = pci_resource_start(pdev, 0);
930 rebase = ioremap(hwbase, 0x80);
931 t = readl(rebase + CNTRL_REG_OFFSET);
932 if (t != CNTRL_REG_GOODVALUE) {
933 printk(KERN_DEBUG "rio: performing cntrl reg fix: %08x -> %08x\n", t, CNTRL_REG_GOODVALUE);
934 writel(CNTRL_REG_GOODVALUE, rebase + CNTRL_REG_OFFSET);
941 static int __init rio_init(void)
947 struct vpd_prom *vpdp;
951 struct pci_dev *pdev = NULL;
952 unsigned short tshort;
956 rio_dprintk(RIO_DEBUG_INIT, "Initing rio module... (rio_debug=%d)\n", rio_debug);
958 if (abs((long) (&rio_debug) - rio_debug) < 0x10000) {
959 printk(KERN_WARNING "rio: rio_debug is an address, instead of a value. " "Assuming -1. Was %x/%p.\n", rio_debug, &rio_debug);
963 if (misc_register(&rio_fw_device) < 0) {
964 printk(KERN_ERR "RIO: Unable to register firmware loader driver.\n");
968 retval = rio_init_datastructures();
970 misc_deregister(&rio_fw_device);
974 /* First look for the JET devices: */
975 while ((pdev = pci_get_device(PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8, pdev))) {
978 if (pci_enable_device(pdev))
981 /* Specialix has a whole bunch of cards with
982 0x2000 as the device ID. They say its because
983 the standard requires it. Stupid standard. */
984 /* It seems that reading a word doesn't work reliably on 2.0.
985 Also, reading a non-aligned dword doesn't work. So we read the
986 whole dword at 0x2c and extract the word at 0x2e (SUBSYSTEM_ID)
988 pci_read_config_dword(pdev, 0x2c, &tint);
989 tshort = (tint >> 16) & 0xffff;
990 rio_dprintk(RIO_DEBUG_PROBE, "Got a specialix card: %x.\n", tint);
991 if (tshort != 0x0100) {
992 rio_dprintk(RIO_DEBUG_PROBE, "But it's not a RIO card (%d)...\n", tshort);
995 rio_dprintk(RIO_DEBUG_PROBE, "cp1\n");
997 hp = &p->RIOHosts[p->RIONumHosts];
998 hp->PaddrP = pci_resource_start(pdev, 2);
999 hp->Ivec = pdev->irq;
1000 if (((1 << hp->Ivec) & rio_irqmask) == 0)
1002 hp->Caddr = ioremap(p->RIOHosts[p->RIONumHosts].PaddrP, RIO_WINDOW_LEN);
1003 hp->CardP = (struct DpRam __iomem *) hp->Caddr;
1005 hp->Copy = rio_copy_to_card;
1006 hp->Mode = RIO_PCI_BOOT_FROM_RAM;
1007 spin_lock_init(&hp->HostLock);
1008 rio_reset_interrupt(hp);
1009 rio_start_card_running(hp);
1011 rio_dprintk(RIO_DEBUG_PROBE, "Going to test it (%p/%p).\n", (void *) p->RIOHosts[p->RIONumHosts].PaddrP, p->RIOHosts[p->RIONumHosts].Caddr);
1012 if (RIOBoardTest(p->RIOHosts[p->RIONumHosts].PaddrP, p->RIOHosts[p->RIONumHosts].Caddr, RIO_PCI, 0) == 0) {
1013 rio_dprintk(RIO_DEBUG_INIT, "Done RIOBoardTest\n");
1014 writeb(0xFF, &p->RIOHosts[p->RIONumHosts].ResetInt);
1015 p->RIOHosts[p->RIONumHosts].UniqueNum =
1016 ((readb(&p->RIOHosts[p->RIONumHosts].Unique[0]) & 0xFF) << 0) |
1017 ((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);
1018 rio_dprintk(RIO_DEBUG_PROBE, "Hmm Tested ok, uniqid = %x.\n", p->RIOHosts[p->RIONumHosts].UniqueNum);
1021 p->RIOLastPCISearch = 0;
1025 iounmap(p->RIOHosts[p->RIONumHosts].Caddr);
1029 /* Then look for the older PCI card.... : */
1031 /* These older PCI cards have problems (only byte-mode access is
1032 supported), which makes them a bit awkward to support.
1033 They also have problems sharing interrupts. Be careful.
1034 (The driver now refuses to share interrupts for these
1035 cards. This should be sufficient).
1038 /* Then look for the older RIO/PCI devices: */
1039 while ((pdev = pci_get_device(PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_SPECIALIX_RIO, pdev))) {
1040 if (pci_enable_device(pdev))
1043 #ifdef CONFIG_RIO_OLDPCI
1044 hp = &p->RIOHosts[p->RIONumHosts];
1045 hp->PaddrP = pci_resource_start(pdev, 0);
1046 hp->Ivec = pdev->irq;
1047 if (((1 << hp->Ivec) & rio_irqmask) == 0)
1049 hp->Ivec |= 0x8000; /* Mark as non-sharable */
1050 hp->Caddr = ioremap(p->RIOHosts[p->RIONumHosts].PaddrP, RIO_WINDOW_LEN);
1051 hp->CardP = (struct DpRam __iomem *) hp->Caddr;
1053 hp->Copy = rio_copy_to_card;
1054 hp->Mode = RIO_PCI_BOOT_FROM_RAM;
1055 spin_lock_init(&hp->HostLock);
1057 rio_dprintk(RIO_DEBUG_PROBE, "Ivec: %x\n", hp->Ivec);
1058 rio_dprintk(RIO_DEBUG_PROBE, "Mode: %x\n", hp->Mode);
1060 rio_reset_interrupt(hp);
1061 rio_start_card_running(hp);
1062 rio_dprintk(RIO_DEBUG_PROBE, "Going to test it (%p/%p).\n", (void *) p->RIOHosts[p->RIONumHosts].PaddrP, p->RIOHosts[p->RIONumHosts].Caddr);
1063 if (RIOBoardTest(p->RIOHosts[p->RIONumHosts].PaddrP, p->RIOHosts[p->RIONumHosts].Caddr, RIO_PCI, 0) == 0) {
1064 writeb(0xFF, &p->RIOHosts[p->RIONumHosts].ResetInt);
1065 p->RIOHosts[p->RIONumHosts].UniqueNum =
1066 ((readb(&p->RIOHosts[p->RIONumHosts].Unique[0]) & 0xFF) << 0) |
1067 ((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);
1068 rio_dprintk(RIO_DEBUG_PROBE, "Hmm Tested ok, uniqid = %x.\n", p->RIOHosts[p->RIONumHosts].UniqueNum);
1070 p->RIOLastPCISearch = 0;
1074 iounmap(p->RIOHosts[p->RIONumHosts].Caddr);
1077 printk(KERN_ERR "Found an older RIO PCI card, but the driver is not " "compiled to support it.\n");
1082 /* Now probe for ISA cards... */
1083 for (i = 0; i < NR_RIO_ADDRS; i++) {
1084 hp = &p->RIOHosts[p->RIONumHosts];
1085 hp->PaddrP = rio_probe_addrs[i];
1086 /* There was something about the IRQs of these cards. 'Forget what.--REW */
1088 hp->Caddr = ioremap(p->RIOHosts[p->RIONumHosts].PaddrP, RIO_WINDOW_LEN);
1089 hp->CardP = (struct DpRam __iomem *) hp->Caddr;
1091 hp->Copy = rio_copy_to_card; /* AT card PCI???? - PVDL
1092 * -- YES! this is now a normal copy. Only the
1093 * old PCI card uses the special PCI copy.
1094 * Moreover, the ISA card will work with the
1095 * special PCI copy anyway. -- REW */
1097 spin_lock_init(&hp->HostLock);
1099 vpdp = get_VPD_PROM(hp);
1100 rio_dprintk(RIO_DEBUG_PROBE, "Got VPD ROM\n");
1102 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)) {
1103 /* Board is present... */
1104 if (RIOBoardTest(hp->PaddrP, hp->Caddr, RIO_AT, 0) == 0) {
1105 /* ... and feeling fine!!!! */
1106 rio_dprintk(RIO_DEBUG_PROBE, "Hmm Tested ok, uniqid = %x.\n", p->RIOHosts[p->RIONumHosts].UniqueNum);
1107 if (RIOAssignAT(p, hp->PaddrP, hp->Caddr, 0)) {
1108 rio_dprintk(RIO_DEBUG_PROBE, "Hmm Tested ok, host%d uniqid = %x.\n", p->RIONumHosts, p->RIOHosts[p->RIONumHosts - 1].UniqueNum);
1120 for (i = 0; i < p->RIONumHosts; i++) {
1121 hp = &p->RIOHosts[i];
1123 int mode = SA_SHIRQ;
1124 if (hp->Ivec & 0x8000) {
1128 rio_dprintk(RIO_DEBUG_INIT, "Requesting interrupt hp: %p rio_interrupt: %d Mode: %x\n", hp, hp->Ivec, hp->Mode);
1129 retval = request_irq(hp->Ivec, rio_interrupt, mode, "rio", hp);
1130 rio_dprintk(RIO_DEBUG_INIT, "Return value from request_irq: %d\n", retval);
1132 printk(KERN_ERR "rio: Cannot allocate irq %d.\n", hp->Ivec);
1135 rio_dprintk(RIO_DEBUG_INIT, "Got irq %d.\n", hp->Ivec);
1136 if (hp->Ivec != 0) {
1137 rio_dprintk(RIO_DEBUG_INIT, "Enabling interrupts on rio card.\n");
1138 hp->Mode |= RIO_PCI_INT_ENABLE;
1140 hp->Mode &= !RIO_PCI_INT_ENABLE;
1141 rio_dprintk(RIO_DEBUG_INIT, "New Mode: %x\n", hp->Mode);
1142 rio_start_card_running(hp);
1144 /* Init the timer "always" to make sure that it can safely be
1145 deleted when we unload... */
1147 init_timer(&hp->timer);
1149 rio_dprintk(RIO_DEBUG_INIT, "Starting polling at %dj intervals.\n", rio_poll);
1151 hp->timer.function = rio_pollfunc;
1152 hp->timer.expires = jiffies + rio_poll;
1153 add_timer(&hp->timer);
1158 rio_dprintk(RIO_DEBUG_INIT, "rio: total of %d boards detected.\n", found);
1161 /* deregister the misc device we created earlier */
1162 misc_deregister(&rio_fw_device);
1166 return found ? 0 : -EIO;
1170 static void __exit rio_exit(void)
1177 for (i = 0, hp = p->RIOHosts; i < p->RIONumHosts; i++, hp++) {
1178 RIOHostReset(hp->Type, hp->CardP, hp->Slot);
1180 free_irq(hp->Ivec, hp);
1181 rio_dprintk(RIO_DEBUG_INIT, "freed irq %d.\n", hp->Ivec);
1183 /* It is safe/allowed to del_timer a non-active timer */
1184 del_timer(&hp->timer);
1187 if (misc_deregister(&rio_fw_device) < 0) {
1188 printk(KERN_INFO "rio: couldn't deregister control-device\n");
1192 rio_dprintk(RIO_DEBUG_CLEANUP, "Cleaning up drivers\n");
1194 rio_release_drivers();
1196 /* Release dynamically allocated memory */
1204 module_init(rio_init);
1205 module_exit(rio_exit);