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/mutex.h>
48 #include <linux/miscdevice.h>
49 #include <linux/init.h>
51 #include <linux/generic_serial.h>
52 #include <asm/uaccess.h>
54 #include "linux_compat.h"
84 #include "rio_linux.h"
86 /* I don't think that this driver can handle more than 512 ports on
87 one machine. Specialix specifies max 4 boards in one machine. I don't
88 know why. If you want to try anyway you'll have to increase the number
89 of boards in rio.h. You'll have to allocate more majors if you need
90 more than 512 ports.... */
92 #ifndef RIO_NORMAL_MAJOR0
93 /* This allows overriding on the compiler commandline, or in a "major.h"
94 include or something like that */
95 #define RIO_NORMAL_MAJOR0 154
96 #define RIO_NORMAL_MAJOR1 156
99 #ifndef PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8
100 #define PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8 0x2000
103 #ifndef RIO_WINDOW_LEN
104 #define RIO_WINDOW_LEN 0x10000
108 /* Configurable options:
109 (Don't be too sure that it'll work if you toggle them) */
111 /* Am I paranoid or not ? ;-) */
112 #undef RIO_PARANOIA_CHECK
115 /* 20 -> 2000 per second. The card should rate-limit interrupts at 1000
116 Hz, but it is user configurable. I don't recommend going above 1000
117 Hz. The interrupt ratelimit might trigger if the interrupt is
118 shared with a very active other device.
119 undef this if you want to disable the check....
121 #define IRQ_RATE_LIMIT 200
124 /* These constants are derived from SCO Source */
125 static DEFINE_MUTEX(rio_fw_mutex);
128 /* locator */ "RIO Config here",
129 /* startuptime */ HZ * 2,
130 /* how long to wait for card to run */
132 /* TRUE -> always use line disc. */
133 /* intrpolltime */ 1,
134 /* The frequency of OUR polls */
135 /* breakinterval */ 25,
136 /* x10 mS XXX: units seem to be 1ms not 10! -- REW */
139 /* RtaLoadBase */ 0x7000,
140 /* HostLoadBase */ 0x7C00,
142 /* number of Xprint hits per second */
144 /* Xprint characters per second */
146 /* start Xprint for a wyse 60 */
148 /* end Xprint for a wyse 60 */
150 /* highest Xprint speed */
152 /* slowest Xprint speed */
154 /* non-zero for mega fast boots */
155 /* First Addr */ 0x0A0000,
156 /* First address to look at */
157 /* Last Addr */ 0xFF0000,
158 /* Last address looked at */
159 /* BufferSize */ 1024,
160 /* Bytes per port of buffering */
162 /* how much data left before wakeup */
164 /* how wide is the console? */
166 /* how long a close command may take */
172 /* Function prototypes */
174 static void rio_disable_tx_interrupts(void *ptr);
175 static void rio_enable_tx_interrupts(void *ptr);
176 static void rio_disable_rx_interrupts(void *ptr);
177 static void rio_enable_rx_interrupts(void *ptr);
178 static int rio_carrier_raised(struct tty_port *port);
179 static void rio_shutdown_port(void *ptr);
180 static int rio_set_real_termios(void *ptr);
181 static void rio_hungup(void *ptr);
182 static void rio_close(void *ptr);
183 static int rio_chars_in_buffer(void *ptr);
184 static long rio_fw_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
185 static int rio_init_drivers(void);
187 static void my_hd(void *addr, int len);
189 static struct tty_driver *rio_driver, *rio_driver2;
191 /* The name "p" is a bit non-descript. But that's what the rio-lynxos
192 sources use all over the place. */
198 /* You can have the driver poll your card.
199 - Set rio_poll to 1 to poll every timer tick (10ms on Intel).
200 This is used when the card cannot use an interrupt for some reason.
202 static int rio_poll = 1;
205 /* These are the only open spaces in my computer. Yours may have more
207 static int rio_probe_addrs[] = { 0xc0000, 0xd0000, 0xe0000 };
209 #define NR_RIO_ADDRS ARRAY_SIZE(rio_probe_addrs)
212 /* Set the mask to all-ones. This alas, only supports 32 interrupts.
213 Some architectures may need more. -- Changed to LONG to
214 support up to 64 bits on 64bit architectures. -- REW 20/06/99 */
215 static long rio_irqmask = -1;
217 MODULE_AUTHOR("Rogier Wolff <R.E.Wolff@bitwizard.nl>, Patrick van de Lageweg <patrick@bitwizard.nl>");
218 MODULE_DESCRIPTION("RIO driver");
219 MODULE_LICENSE("GPL");
220 module_param(rio_poll, int, 0);
221 module_param(rio_debug, int, 0644);
222 module_param(rio_irqmask, long, 0);
224 static struct real_driver rio_real_driver = {
225 rio_disable_tx_interrupts,
226 rio_enable_tx_interrupts,
227 rio_disable_rx_interrupts,
228 rio_enable_rx_interrupts,
230 rio_set_real_termios,
238 * Firmware loader driver specific routines
242 static const struct file_operations rio_fw_fops = {
243 .owner = THIS_MODULE,
244 .unlocked_ioctl = rio_fw_ioctl,
247 static struct miscdevice rio_fw_device = {
248 RIOCTL_MISC_MINOR, "rioctl", &rio_fw_fops
255 #ifdef RIO_PARANOIA_CHECK
257 /* This doesn't work. Who's paranoid around here? Not me! */
259 static inline int rio_paranoia_check(struct rio_port const *port, char *name, const char *routine)
262 static const char *badmagic = KERN_ERR "rio: Warning: bad rio port magic number for device %s in %s\n";
263 static const char *badinfo = KERN_ERR "rio: Warning: null rio port for device %s in %s\n";
266 printk(badinfo, name, routine);
269 if (port->magic != RIO_MAGIC) {
270 printk(badmagic, name, routine);
277 #define rio_paranoia_check(a,b,c) 0
282 static void my_hd(void *ad, int len)
285 unsigned char *addr = ad;
287 for (i = 0; i < len; i += 16) {
288 rio_dprintk(RIO_DEBUG_PARAM, "%08lx ", (unsigned long) addr + i);
289 for (j = 0; j < 16; j++) {
290 rio_dprintk(RIO_DEBUG_PARAM, "%02x %s", addr[j + i], (j == 7) ? " " : "");
292 for (j = 0; j < 16; j++) {
294 rio_dprintk(RIO_DEBUG_PARAM, "%c", (ch < 0x20) ? '.' : ((ch > 0x7f) ? '.' : ch));
296 rio_dprintk(RIO_DEBUG_PARAM, "\n");
300 #define my_hd(ad,len) do{/* nothing*/ } while (0)
304 /* Delay a number of jiffies, allowing a signal to interrupt */
305 int RIODelay(struct Port *PortP, int njiffies)
309 rio_dprintk(RIO_DEBUG_DELAY, "delaying %d jiffies\n", njiffies);
310 msleep_interruptible(jiffies_to_msecs(njiffies));
313 if (signal_pending(current))
320 /* Delay a number of jiffies, disallowing a signal to interrupt */
321 int RIODelay_ni(struct Port *PortP, int njiffies)
325 rio_dprintk(RIO_DEBUG_DELAY, "delaying %d jiffies (ni)\n", njiffies);
326 msleep(jiffies_to_msecs(njiffies));
331 void rio_copy_to_card(void *from, void __iomem *to, int len)
333 rio_copy_toio(to, from, len);
336 int rio_minor(struct tty_struct *tty)
338 return tty->index + ((tty->driver == rio_driver) ? 0 : 256);
341 static int rio_set_real_termios(void *ptr)
343 return RIOParam((struct Port *) ptr, RIOC_CONFIG, 1, 1);
347 static void rio_reset_interrupt(struct Host *HostP)
351 switch (HostP->Type) {
355 writeb(0xFF, &HostP->ResetInt);
362 static irqreturn_t rio_interrupt(int irq, void *ptr)
367 HostP = ptr; /* &p->RIOHosts[(long)ptr]; */
368 rio_dprintk(RIO_DEBUG_IFLOW, "rio: enter rio_interrupt (%d/%d)\n", irq, HostP->Ivec);
370 /* AAargh! The order in which to do these things is essential and
373 - hardware twiddling goes before "recursive". Otherwise when we
374 poll the card, and a recursive interrupt happens, we won't
375 ack the card, so it might keep on interrupting us. (especially
376 level sensitive interrupt systems like PCI).
378 - Rate limit goes before hardware twiddling. Otherwise we won't
379 catch a card that has gone bonkers.
381 - The "initialized" test goes after the hardware twiddling. Otherwise
382 the card will stick us in the interrupt routine again.
384 - The initialized test goes before recursive.
387 rio_dprintk(RIO_DEBUG_IFLOW, "rio: We've have noticed the interrupt\n");
388 if (HostP->Ivec == irq) {
389 /* Tell the card we've noticed the interrupt. */
390 rio_reset_interrupt(HostP);
393 if ((HostP->Flags & RUN_STATE) != RC_RUNNING)
396 if (test_and_set_bit(RIO_BOARD_INTR_LOCK, &HostP->locks)) {
397 printk(KERN_ERR "Recursive interrupt! (host %p/irq%d)\n", ptr, HostP->Ivec);
401 RIOServiceHost(p, HostP);
403 rio_dprintk(RIO_DEBUG_IFLOW, "riointr() doing host %p type %d\n", ptr, HostP->Type);
405 clear_bit(RIO_BOARD_INTR_LOCK, &HostP->locks);
406 rio_dprintk(RIO_DEBUG_IFLOW, "rio: exit rio_interrupt (%d/%d)\n", irq, HostP->Ivec);
412 static void rio_pollfunc(unsigned long data)
416 rio_interrupt(0, &p->RIOHosts[data]);
417 mod_timer(&p->RIOHosts[data].timer, jiffies + rio_poll);
423 /* ********************************************************************** *
424 * Here are the routines that actually *
425 * interface with the generic_serial driver *
426 * ********************************************************************** */
428 /* Ehhm. I don't know how to fiddle with interrupts on the Specialix
429 cards. .... Hmm. Ok I figured it out. You don't. -- REW */
431 static void rio_disable_tx_interrupts(void *ptr)
435 /* port->gs.port.flags &= ~GS_TX_INTEN; */
441 static void rio_enable_tx_interrupts(void *ptr)
443 struct Port *PortP = ptr;
448 /* hn = PortP->HostP - p->RIOHosts;
450 rio_dprintk (RIO_DEBUG_TTY, "Pushing host %d\n", hn);
451 rio_interrupt (-1,(void *) hn, NULL); */
453 RIOTxEnable((char *) PortP);
456 * In general we cannot count on "tx empty" interrupts, although
457 * the interrupt routine seems to be able to tell the difference.
459 PortP->gs.port.flags &= ~GS_TX_INTEN;
465 static void rio_disable_rx_interrupts(void *ptr)
471 static void rio_enable_rx_interrupts(void *ptr)
473 /* struct rio_port *port = ptr; */
479 /* Jeez. Isn't this simple? */
480 static int rio_carrier_raised(struct tty_port *port)
482 struct Port *PortP = container_of(port, struct Port, gs.port);
486 rv = (PortP->ModemState & RIOC_MSVR1_CD) != 0;
488 rio_dprintk(RIO_DEBUG_INIT, "Getting CD status: %d\n", rv);
495 /* Jeez. Isn't this simple? Actually, we can sync with the actual port
496 by just pushing stuff into the queue going to the port... */
497 static int rio_chars_in_buffer(void *ptr)
506 /* Nothing special here... */
507 static void rio_shutdown_port(void *ptr)
513 PortP = (struct Port *) ptr;
514 PortP->gs.port.tty = NULL;
519 /* I haven't the foggiest why the decrement use count has to happen
520 here. The whole linux serial drivers stuff needs to be redesigned.
521 My guess is that this is a hack to minimize the impact of a bug
522 elsewhere. Thinking about it some more. (try it sometime) Try
523 running minicom on a serial port that is driven by a modularized
524 driver. Have the modem hangup. Then remove the driver module. Then
525 exit minicom. I expect an "oops". -- REW */
526 static void rio_hungup(void *ptr)
532 PortP = (struct Port *) ptr;
533 PortP->gs.port.tty = NULL;
539 /* The standard serial_close would become shorter if you'd wrap it like
541 rs_close (...){save_flags;cli;real_close();dec_use_count;restore_flags;}
543 static void rio_close(void *ptr)
549 PortP = (struct Port *) ptr;
553 if (PortP->gs.port.count) {
554 printk(KERN_ERR "WARNING port count:%d\n", PortP->gs.port.count);
555 PortP->gs.port.count = 0;
558 PortP->gs.port.tty = NULL;
564 static long rio_fw_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
569 /* The "dev" argument isn't used. */
570 mutex_lock(&rio_fw_mutex);
571 rc = riocontrol(p, 0, cmd, arg, capable(CAP_SYS_ADMIN));
572 mutex_unlock(&rio_fw_mutex);
578 extern int RIOShortCommand(struct rio_info *p, struct Port *PortP, int command, int len, int arg);
580 static int rio_ioctl(struct tty_struct *tty, struct file *filp, unsigned int cmd, unsigned long arg)
582 void __user *argp = (void __user *)arg;
589 PortP = (struct Port *) tty->driver_data;
594 if ((rc = get_user(ival, (unsigned __user *) argp)) == 0) {
595 tty->termios->c_cflag = (tty->termios->c_cflag & ~CLOCAL) | (ival ? CLOCAL : 0);
600 if (access_ok(VERIFY_WRITE, argp, sizeof(struct serial_struct)))
601 rc = gs_getserial(&PortP->gs, argp);
604 if (PortP->State & RIO_DELETED) {
605 rio_dprintk(RIO_DEBUG_TTY, "BREAK on deleted RTA\n");
608 if (RIOShortCommand(p, PortP, RIOC_SBREAK, 2, 250) ==
610 rio_dprintk(RIO_DEBUG_INTR, "SBREAK RIOShortCommand failed\n");
616 if (PortP->State & RIO_DELETED) {
617 rio_dprintk(RIO_DEBUG_TTY, "BREAK on deleted RTA\n");
621 l = arg ? arg * 100 : 250;
624 if (RIOShortCommand(p, PortP, RIOC_SBREAK, 2,
625 arg ? arg * 100 : 250) == RIO_FAIL) {
626 rio_dprintk(RIO_DEBUG_INTR, "SBREAK RIOShortCommand failed\n");
633 if (access_ok(VERIFY_READ, argp, sizeof(struct serial_struct)))
634 rc = gs_setserial(&PortP->gs, argp);
645 /* The throttle/unthrottle scheme for the Specialix card is different
646 * from other drivers and deserves some explanation.
647 * The Specialix hardware takes care of XON/XOFF
648 * and CTS/RTS flow control itself. This means that all we have to
649 * do when signalled by the upper tty layer to throttle/unthrottle is
650 * to make a note of it here. When we come to read characters from the
651 * rx buffers on the card (rio_receive_chars()) we look to see if the
652 * upper layer can accept more (as noted here in rio_rx_throt[]).
653 * If it can't we simply don't remove chars from the cards buffer.
654 * When the tty layer can accept chars, we again note that here and when
655 * rio_receive_chars() is called it will remove them from the cards buffer.
656 * The card will notice that a ports buffer has drained below some low
657 * water mark and will unflow control the line itself, using whatever
658 * flow control scheme is in use for that port. -- Simon Allen
661 static void rio_throttle(struct tty_struct *tty)
663 struct Port *port = (struct Port *) tty->driver_data;
666 /* If the port is using any type of input flow
667 * control then throttle the port.
670 if ((tty->termios->c_cflag & CRTSCTS) || (I_IXOFF(tty))) {
671 port->State |= RIO_THROTTLE_RX;
678 static void rio_unthrottle(struct tty_struct *tty)
680 struct Port *port = (struct Port *) tty->driver_data;
683 /* Always unthrottle even if flow control is not enabled on
684 * this port in case we disabled flow control while the port
688 port->State &= ~RIO_THROTTLE_RX;
698 /* ********************************************************************** *
699 * Here are the initialization routines. *
700 * ********************************************************************** */
703 static struct vpd_prom *get_VPD_PROM(struct Host *hp)
705 static struct vpd_prom vpdp;
710 rio_dprintk(RIO_DEBUG_PROBE, "Going to verify vpd prom at %p.\n", hp->Caddr + RIO_VPD_ROM);
713 for (i = 0; i < sizeof(struct vpd_prom); i++)
714 *p++ = readb(hp->Caddr + RIO_VPD_ROM + i * 2);
715 /* read_rio_byte (hp, RIO_VPD_ROM + i*2); */
717 /* Terminate the identifier string.
718 *** requires one extra byte in struct vpd_prom *** */
721 if (rio_debug & RIO_DEBUG_PROBE)
722 my_hd((char *) &vpdp, 0x20);
729 static const struct tty_operations rio_ops = {
733 .put_char = gs_put_char,
734 .flush_chars = gs_flush_chars,
735 .write_room = gs_write_room,
736 .chars_in_buffer = gs_chars_in_buffer,
737 .flush_buffer = gs_flush_buffer,
739 .throttle = rio_throttle,
740 .unthrottle = rio_unthrottle,
741 .set_termios = gs_set_termios,
747 static int rio_init_drivers(void)
751 rio_driver = alloc_tty_driver(256);
754 rio_driver2 = alloc_tty_driver(256);
760 rio_driver->owner = THIS_MODULE;
761 rio_driver->driver_name = "specialix_rio";
762 rio_driver->name = "ttySR";
763 rio_driver->major = RIO_NORMAL_MAJOR0;
764 rio_driver->type = TTY_DRIVER_TYPE_SERIAL;
765 rio_driver->subtype = SERIAL_TYPE_NORMAL;
766 rio_driver->init_termios = tty_std_termios;
767 rio_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
768 rio_driver->flags = TTY_DRIVER_REAL_RAW;
769 tty_set_operations(rio_driver, &rio_ops);
771 rio_driver2->owner = THIS_MODULE;
772 rio_driver2->driver_name = "specialix_rio";
773 rio_driver2->name = "ttySR";
774 rio_driver2->major = RIO_NORMAL_MAJOR1;
775 rio_driver2->type = TTY_DRIVER_TYPE_SERIAL;
776 rio_driver2->subtype = SERIAL_TYPE_NORMAL;
777 rio_driver2->init_termios = tty_std_termios;
778 rio_driver2->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
779 rio_driver2->flags = TTY_DRIVER_REAL_RAW;
780 tty_set_operations(rio_driver2, &rio_ops);
782 rio_dprintk(RIO_DEBUG_INIT, "set_termios = %p\n", gs_set_termios);
784 if ((error = tty_register_driver(rio_driver)))
786 if ((error = tty_register_driver(rio_driver2)))
791 tty_unregister_driver(rio_driver);
793 put_tty_driver(rio_driver2);
795 put_tty_driver(rio_driver);
797 printk(KERN_ERR "rio: Couldn't register a rio driver, error = %d\n", error);
801 static const struct tty_port_operations rio_port_ops = {
802 .carrier_raised = rio_carrier_raised,
805 static int rio_init_datastructures(void)
811 /* Many drivers statically allocate the maximum number of ports
812 There is no reason not to allocate them dynamically. Is there? -- REW */
813 /* However, the RIO driver allows users to configure their first
814 RTA as the ports numbered 504-511. We therefore need to allocate
815 the whole range. :-( -- REW */
817 #define RI_SZ sizeof(struct rio_info)
818 #define HOST_SZ sizeof(struct Host)
819 #define PORT_SZ sizeof(struct Port *)
820 #define TMIO_SZ sizeof(struct termios *)
821 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);
823 if (!(p = kzalloc(RI_SZ, GFP_KERNEL)))
825 if (!(p->RIOHosts = kzalloc(RIO_HOSTS * HOST_SZ, GFP_KERNEL)))
827 if (!(p->RIOPortp = kzalloc(RIO_PORTS * PORT_SZ, GFP_KERNEL)))
829 p->RIOConf = RIOConf;
830 rio_dprintk(RIO_DEBUG_INIT, "Got : %p %p %p\n", p, p->RIOHosts, p->RIOPortp);
833 for (i = 0; i < RIO_PORTS; i++) {
834 port = p->RIOPortp[i] = kzalloc(sizeof(struct Port), GFP_KERNEL);
838 rio_dprintk(RIO_DEBUG_INIT, "initing port %d (%d)\n", i, port->Mapped);
839 tty_port_init(&port->gs.port);
840 port->gs.port.ops = &rio_port_ops;
842 port->gs.magic = RIO_MAGIC;
843 port->gs.close_delay = HZ / 2;
844 port->gs.closing_wait = 30 * HZ;
845 port->gs.rd = &rio_real_driver;
846 spin_lock_init(&port->portSem);
849 /* We could postpone initializing them to when they are configured. */
854 if (rio_debug & RIO_DEBUG_INIT) {
855 my_hd(&rio_real_driver, sizeof(rio_real_driver));
862 free6:for (i--; i >= 0; i--)
863 kfree(p->RIOPortp[i]);
866 free3:*/ kfree(p->RIOPortp);
867 free2:kfree(p->RIOHosts);
869 rio_dprintk(RIO_DEBUG_INIT, "Not enough memory! %p %p %p\n", p, p->RIOHosts, p->RIOPortp);
875 static void __exit rio_release_drivers(void)
878 tty_unregister_driver(rio_driver2);
879 tty_unregister_driver(rio_driver);
880 put_tty_driver(rio_driver2);
881 put_tty_driver(rio_driver);
887 /* This was written for SX, but applies to RIO too...
890 There is another bit besides Bit 17. Turning that bit off
891 (on boards shipped with the fix in the eeprom) results in a
892 hang on the next access to the card.
895 /********************************************************
896 * Setting bit 17 in the CNTRL register of the PLX 9050 *
897 * chip forces a retry on writes while a read is pending.*
898 * This is to prevent the card locking up on Intel Xeon *
899 * multiprocessor systems with the NX chipset. -- NV *
900 ********************************************************/
902 /* Newer cards are produced with this bit set from the configuration
903 EEprom. As the bit is read/write for the CPU, we can fix it here,
904 if we detect that it isn't set correctly. -- REW */
906 static void fix_rio_pci(struct pci_dev *pdev)
908 unsigned long hwbase;
909 unsigned char __iomem *rebase;
912 #define CNTRL_REG_OFFSET 0x50
913 #define CNTRL_REG_GOODVALUE 0x18260000
915 hwbase = pci_resource_start(pdev, 0);
916 rebase = ioremap(hwbase, 0x80);
917 t = readl(rebase + CNTRL_REG_OFFSET);
918 if (t != CNTRL_REG_GOODVALUE) {
919 printk(KERN_DEBUG "rio: performing cntrl reg fix: %08x -> %08x\n", t, CNTRL_REG_GOODVALUE);
920 writel(CNTRL_REG_GOODVALUE, rebase + CNTRL_REG_OFFSET);
927 static int __init rio_init(void)
933 struct vpd_prom *vpdp;
937 struct pci_dev *pdev = NULL;
938 unsigned short tshort;
942 rio_dprintk(RIO_DEBUG_INIT, "Initing rio module... (rio_debug=%d)\n", rio_debug);
944 if (abs((long) (&rio_debug) - rio_debug) < 0x10000) {
945 printk(KERN_WARNING "rio: rio_debug is an address, instead of a value. " "Assuming -1. Was %x/%p.\n", rio_debug, &rio_debug);
949 if (misc_register(&rio_fw_device) < 0) {
950 printk(KERN_ERR "RIO: Unable to register firmware loader driver.\n");
954 retval = rio_init_datastructures();
956 misc_deregister(&rio_fw_device);
960 /* First look for the JET devices: */
961 while ((pdev = pci_get_device(PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8, pdev))) {
964 if (pci_enable_device(pdev))
967 /* Specialix has a whole bunch of cards with
968 0x2000 as the device ID. They say its because
969 the standard requires it. Stupid standard. */
970 /* It seems that reading a word doesn't work reliably on 2.0.
971 Also, reading a non-aligned dword doesn't work. So we read the
972 whole dword at 0x2c and extract the word at 0x2e (SUBSYSTEM_ID)
974 pci_read_config_dword(pdev, 0x2c, &tint);
975 tshort = (tint >> 16) & 0xffff;
976 rio_dprintk(RIO_DEBUG_PROBE, "Got a specialix card: %x.\n", tint);
977 if (tshort != 0x0100) {
978 rio_dprintk(RIO_DEBUG_PROBE, "But it's not a RIO card (%d)...\n", tshort);
981 rio_dprintk(RIO_DEBUG_PROBE, "cp1\n");
983 hp = &p->RIOHosts[p->RIONumHosts];
984 hp->PaddrP = pci_resource_start(pdev, 2);
985 hp->Ivec = pdev->irq;
986 if (((1 << hp->Ivec) & rio_irqmask) == 0)
988 hp->Caddr = ioremap(p->RIOHosts[p->RIONumHosts].PaddrP, RIO_WINDOW_LEN);
989 hp->CardP = (struct DpRam __iomem *) hp->Caddr;
991 hp->Copy = rio_copy_to_card;
992 hp->Mode = RIO_PCI_BOOT_FROM_RAM;
993 spin_lock_init(&hp->HostLock);
994 rio_reset_interrupt(hp);
995 rio_start_card_running(hp);
997 rio_dprintk(RIO_DEBUG_PROBE, "Going to test it (%p/%p).\n", (void *) p->RIOHosts[p->RIONumHosts].PaddrP, p->RIOHosts[p->RIONumHosts].Caddr);
998 if (RIOBoardTest(p->RIOHosts[p->RIONumHosts].PaddrP, p->RIOHosts[p->RIONumHosts].Caddr, RIO_PCI, 0) == 0) {
999 rio_dprintk(RIO_DEBUG_INIT, "Done RIOBoardTest\n");
1000 writeb(0xFF, &p->RIOHosts[p->RIONumHosts].ResetInt);
1001 p->RIOHosts[p->RIONumHosts].UniqueNum =
1002 ((readb(&p->RIOHosts[p->RIONumHosts].Unique[0]) & 0xFF) << 0) |
1003 ((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);
1004 rio_dprintk(RIO_DEBUG_PROBE, "Hmm Tested ok, uniqid = %x.\n", p->RIOHosts[p->RIONumHosts].UniqueNum);
1008 p->RIOHosts[p->RIONumHosts].pdev = pdev;
1011 p->RIOLastPCISearch = 0;
1015 iounmap(p->RIOHosts[p->RIONumHosts].Caddr);
1016 p->RIOHosts[p->RIONumHosts].Caddr = NULL;
1020 /* Then look for the older PCI card.... : */
1022 /* These older PCI cards have problems (only byte-mode access is
1023 supported), which makes them a bit awkward to support.
1024 They also have problems sharing interrupts. Be careful.
1025 (The driver now refuses to share interrupts for these
1026 cards. This should be sufficient).
1029 /* Then look for the older RIO/PCI devices: */
1030 while ((pdev = pci_get_device(PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_SPECIALIX_RIO, pdev))) {
1031 if (pci_enable_device(pdev))
1034 #ifdef CONFIG_RIO_OLDPCI
1035 hp = &p->RIOHosts[p->RIONumHosts];
1036 hp->PaddrP = pci_resource_start(pdev, 0);
1037 hp->Ivec = pdev->irq;
1038 if (((1 << hp->Ivec) & rio_irqmask) == 0)
1040 hp->Ivec |= 0x8000; /* Mark as non-sharable */
1041 hp->Caddr = ioremap(p->RIOHosts[p->RIONumHosts].PaddrP, RIO_WINDOW_LEN);
1042 hp->CardP = (struct DpRam __iomem *) hp->Caddr;
1044 hp->Copy = rio_copy_to_card;
1045 hp->Mode = RIO_PCI_BOOT_FROM_RAM;
1046 spin_lock_init(&hp->HostLock);
1048 rio_dprintk(RIO_DEBUG_PROBE, "Ivec: %x\n", hp->Ivec);
1049 rio_dprintk(RIO_DEBUG_PROBE, "Mode: %x\n", hp->Mode);
1051 rio_reset_interrupt(hp);
1052 rio_start_card_running(hp);
1053 rio_dprintk(RIO_DEBUG_PROBE, "Going to test it (%p/%p).\n", (void *) p->RIOHosts[p->RIONumHosts].PaddrP, p->RIOHosts[p->RIONumHosts].Caddr);
1054 if (RIOBoardTest(p->RIOHosts[p->RIONumHosts].PaddrP, p->RIOHosts[p->RIONumHosts].Caddr, RIO_PCI, 0) == 0) {
1055 writeb(0xFF, &p->RIOHosts[p->RIONumHosts].ResetInt);
1056 p->RIOHosts[p->RIONumHosts].UniqueNum =
1057 ((readb(&p->RIOHosts[p->RIONumHosts].Unique[0]) & 0xFF) << 0) |
1058 ((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);
1059 rio_dprintk(RIO_DEBUG_PROBE, "Hmm Tested ok, uniqid = %x.\n", p->RIOHosts[p->RIONumHosts].UniqueNum);
1061 p->RIOHosts[p->RIONumHosts].pdev = pdev;
1064 p->RIOLastPCISearch = 0;
1068 iounmap(p->RIOHosts[p->RIONumHosts].Caddr);
1069 p->RIOHosts[p->RIONumHosts].Caddr = NULL;
1072 printk(KERN_ERR "Found an older RIO PCI card, but the driver is not " "compiled to support it.\n");
1077 /* Now probe for ISA cards... */
1078 for (i = 0; i < NR_RIO_ADDRS; i++) {
1079 hp = &p->RIOHosts[p->RIONumHosts];
1080 hp->PaddrP = rio_probe_addrs[i];
1081 /* There was something about the IRQs of these cards. 'Forget what.--REW */
1083 hp->Caddr = ioremap(p->RIOHosts[p->RIONumHosts].PaddrP, RIO_WINDOW_LEN);
1084 hp->CardP = (struct DpRam __iomem *) hp->Caddr;
1086 hp->Copy = rio_copy_to_card; /* AT card PCI???? - PVDL
1087 * -- YES! this is now a normal copy. Only the
1088 * old PCI card uses the special PCI copy.
1089 * Moreover, the ISA card will work with the
1090 * special PCI copy anyway. -- REW */
1092 spin_lock_init(&hp->HostLock);
1094 vpdp = get_VPD_PROM(hp);
1095 rio_dprintk(RIO_DEBUG_PROBE, "Got VPD ROM\n");
1097 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)) {
1098 /* Board is present... */
1099 if (RIOBoardTest(hp->PaddrP, hp->Caddr, RIO_AT, 0) == 0) {
1100 /* ... and feeling fine!!!! */
1101 rio_dprintk(RIO_DEBUG_PROBE, "Hmm Tested ok, uniqid = %x.\n", p->RIOHosts[p->RIONumHosts].UniqueNum);
1102 if (RIOAssignAT(p, hp->PaddrP, hp->Caddr, 0)) {
1103 rio_dprintk(RIO_DEBUG_PROBE, "Hmm Tested ok, host%d uniqid = %x.\n", p->RIONumHosts, p->RIOHosts[p->RIONumHosts - 1].UniqueNum);
1117 for (i = 0; i < p->RIONumHosts; i++) {
1118 hp = &p->RIOHosts[i];
1120 int mode = IRQF_SHARED;
1121 if (hp->Ivec & 0x8000) {
1125 rio_dprintk(RIO_DEBUG_INIT, "Requesting interrupt hp: %p rio_interrupt: %d Mode: %x\n", hp, hp->Ivec, hp->Mode);
1126 retval = request_irq(hp->Ivec, rio_interrupt, mode, "rio", hp);
1127 rio_dprintk(RIO_DEBUG_INIT, "Return value from request_irq: %d\n", retval);
1129 printk(KERN_ERR "rio: Cannot allocate irq %d.\n", hp->Ivec);
1132 rio_dprintk(RIO_DEBUG_INIT, "Got irq %d.\n", hp->Ivec);
1133 if (hp->Ivec != 0) {
1134 rio_dprintk(RIO_DEBUG_INIT, "Enabling interrupts on rio card.\n");
1135 hp->Mode |= RIO_PCI_INT_ENABLE;
1137 hp->Mode &= ~RIO_PCI_INT_ENABLE;
1138 rio_dprintk(RIO_DEBUG_INIT, "New Mode: %x\n", hp->Mode);
1139 rio_start_card_running(hp);
1141 /* Init the timer "always" to make sure that it can safely be
1142 deleted when we unload... */
1144 setup_timer(&hp->timer, rio_pollfunc, i);
1146 rio_dprintk(RIO_DEBUG_INIT, "Starting polling at %dj intervals.\n", rio_poll);
1147 mod_timer(&hp->timer, jiffies + rio_poll);
1152 rio_dprintk(RIO_DEBUG_INIT, "rio: total of %d boards detected.\n", found);
1155 /* deregister the misc device we created earlier */
1156 misc_deregister(&rio_fw_device);
1160 return found ? 0 : -EIO;
1164 static void __exit rio_exit(void)
1171 for (i = 0, hp = p->RIOHosts; i < p->RIONumHosts; i++, hp++) {
1172 RIOHostReset(hp->Type, hp->CardP, hp->Slot);
1174 free_irq(hp->Ivec, hp);
1175 rio_dprintk(RIO_DEBUG_INIT, "freed irq %d.\n", hp->Ivec);
1177 /* It is safe/allowed to del_timer a non-active timer */
1178 del_timer_sync(&hp->timer);
1181 if (hp->Type == RIO_PCI)
1182 pci_dev_put(hp->pdev);
1185 if (misc_deregister(&rio_fw_device) < 0) {
1186 printk(KERN_INFO "rio: couldn't deregister control-device\n");
1190 rio_dprintk(RIO_DEBUG_CLEANUP, "Cleaning up drivers\n");
1192 rio_release_drivers();
1194 /* Release dynamically allocated memory */
1202 module_init(rio_init);
1203 module_exit(rio_exit);