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_get_CD(void *ptr);
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,
229 rio_set_real_termios,
237 * Firmware loader driver specific routines
241 static const struct file_operations rio_fw_fops = {
242 .owner = THIS_MODULE,
243 .unlocked_ioctl = rio_fw_ioctl,
246 static struct miscdevice rio_fw_device = {
247 RIOCTL_MISC_MINOR, "rioctl", &rio_fw_fops
254 #ifdef RIO_PARANOIA_CHECK
256 /* This doesn't work. Who's paranoid around here? Not me! */
258 static inline int rio_paranoia_check(struct rio_port const *port, char *name, const char *routine)
261 static const char *badmagic = KERN_ERR "rio: Warning: bad rio port magic number for device %s in %s\n";
262 static const char *badinfo = KERN_ERR "rio: Warning: null rio port for device %s in %s\n";
265 printk(badinfo, name, routine);
268 if (port->magic != RIO_MAGIC) {
269 printk(badmagic, name, routine);
276 #define rio_paranoia_check(a,b,c) 0
281 static void my_hd(void *ad, int len)
284 unsigned char *addr = ad;
286 for (i = 0; i < len; i += 16) {
287 rio_dprintk(RIO_DEBUG_PARAM, "%08lx ", (unsigned long) addr + i);
288 for (j = 0; j < 16; j++) {
289 rio_dprintk(RIO_DEBUG_PARAM, "%02x %s", addr[j + i], (j == 7) ? " " : "");
291 for (j = 0; j < 16; j++) {
293 rio_dprintk(RIO_DEBUG_PARAM, "%c", (ch < 0x20) ? '.' : ((ch > 0x7f) ? '.' : ch));
295 rio_dprintk(RIO_DEBUG_PARAM, "\n");
299 #define my_hd(ad,len) do{/* nothing*/ } while (0)
303 /* Delay a number of jiffies, allowing a signal to interrupt */
304 int RIODelay(struct Port *PortP, int njiffies)
308 rio_dprintk(RIO_DEBUG_DELAY, "delaying %d jiffies\n", njiffies);
309 msleep_interruptible(jiffies_to_msecs(njiffies));
312 if (signal_pending(current))
319 /* Delay a number of jiffies, disallowing a signal to interrupt */
320 int RIODelay_ni(struct Port *PortP, int njiffies)
324 rio_dprintk(RIO_DEBUG_DELAY, "delaying %d jiffies (ni)\n", njiffies);
325 msleep(jiffies_to_msecs(njiffies));
330 void rio_copy_to_card(void *from, void __iomem *to, int len)
332 rio_copy_toio(to, from, len);
335 int rio_minor(struct tty_struct *tty)
337 return tty->index + (tty->driver == rio_driver) ? 0 : 256;
340 static int rio_set_real_termios(void *ptr)
342 return RIOParam((struct Port *) ptr, RIOC_CONFIG, 1, 1);
346 static void rio_reset_interrupt(struct Host *HostP)
350 switch (HostP->Type) {
354 writeb(0xFF, &HostP->ResetInt);
361 static irqreturn_t rio_interrupt(int irq, void *ptr)
366 HostP = ptr; /* &p->RIOHosts[(long)ptr]; */
367 rio_dprintk(RIO_DEBUG_IFLOW, "rio: enter rio_interrupt (%d/%d)\n", irq, HostP->Ivec);
369 /* AAargh! The order in which to do these things is essential and
372 - hardware twiddling goes before "recursive". Otherwise when we
373 poll the card, and a recursive interrupt happens, we won't
374 ack the card, so it might keep on interrupting us. (especially
375 level sensitive interrupt systems like PCI).
377 - Rate limit goes before hardware twiddling. Otherwise we won't
378 catch a card that has gone bonkers.
380 - The "initialized" test goes after the hardware twiddling. Otherwise
381 the card will stick us in the interrupt routine again.
383 - The initialized test goes before recursive.
386 rio_dprintk(RIO_DEBUG_IFLOW, "rio: We've have noticed the interrupt\n");
387 if (HostP->Ivec == irq) {
388 /* Tell the card we've noticed the interrupt. */
389 rio_reset_interrupt(HostP);
392 if ((HostP->Flags & RUN_STATE) != RC_RUNNING)
395 if (test_and_set_bit(RIO_BOARD_INTR_LOCK, &HostP->locks)) {
396 printk(KERN_ERR "Recursive interrupt! (host %p/irq%d)\n", ptr, HostP->Ivec);
400 RIOServiceHost(p, HostP);
402 rio_dprintk(RIO_DEBUG_IFLOW, "riointr() doing host %p type %d\n", ptr, HostP->Type);
404 clear_bit(RIO_BOARD_INTR_LOCK, &HostP->locks);
405 rio_dprintk(RIO_DEBUG_IFLOW, "rio: exit rio_interrupt (%d/%d)\n", irq, HostP->Ivec);
411 static void rio_pollfunc(unsigned long data)
415 rio_interrupt(0, &p->RIOHosts[data]);
416 mod_timer(&p->RIOHosts[data].timer, jiffies + rio_poll);
422 /* ********************************************************************** *
423 * Here are the routines that actually *
424 * interface with the generic_serial driver *
425 * ********************************************************************** */
427 /* Ehhm. I don't know how to fiddle with interrupts on the Specialix
428 cards. .... Hmm. Ok I figured it out. You don't. -- REW */
430 static void rio_disable_tx_interrupts(void *ptr)
434 /* port->gs.port.flags &= ~GS_TX_INTEN; */
440 static void rio_enable_tx_interrupts(void *ptr)
442 struct Port *PortP = ptr;
447 /* hn = PortP->HostP - p->RIOHosts;
449 rio_dprintk (RIO_DEBUG_TTY, "Pushing host %d\n", hn);
450 rio_interrupt (-1,(void *) hn, NULL); */
452 RIOTxEnable((char *) PortP);
455 * In general we cannot count on "tx empty" interrupts, although
456 * the interrupt routine seems to be able to tell the difference.
458 PortP->gs.port.flags &= ~GS_TX_INTEN;
464 static void rio_disable_rx_interrupts(void *ptr)
470 static void rio_enable_rx_interrupts(void *ptr)
472 /* struct rio_port *port = ptr; */
478 /* Jeez. Isn't this simple? */
479 static int rio_get_CD(void *ptr)
481 struct Port *PortP = ptr;
485 rv = (PortP->ModemState & RIOC_MSVR1_CD) != 0;
487 rio_dprintk(RIO_DEBUG_INIT, "Getting CD status: %d\n", rv);
494 /* Jeez. Isn't this simple? Actually, we can sync with the actual port
495 by just pushing stuff into the queue going to the port... */
496 static int rio_chars_in_buffer(void *ptr)
505 /* Nothing special here... */
506 static void rio_shutdown_port(void *ptr)
512 PortP = (struct Port *) ptr;
513 PortP->gs.port.tty = NULL;
518 /* I haven't the foggiest why the decrement use count has to happen
519 here. The whole linux serial drivers stuff needs to be redesigned.
520 My guess is that this is a hack to minimize the impact of a bug
521 elsewhere. Thinking about it some more. (try it sometime) Try
522 running minicom on a serial port that is driven by a modularized
523 driver. Have the modem hangup. Then remove the driver module. Then
524 exit minicom. I expect an "oops". -- REW */
525 static void rio_hungup(void *ptr)
531 PortP = (struct Port *) ptr;
532 PortP->gs.port.tty = NULL;
538 /* The standard serial_close would become shorter if you'd wrap it like
540 rs_close (...){save_flags;cli;real_close();dec_use_count;restore_flags;}
542 static void rio_close(void *ptr)
548 PortP = (struct Port *) ptr;
552 if (PortP->gs.port.count) {
553 printk(KERN_ERR "WARNING port count:%d\n", PortP->gs.port.count);
554 PortP->gs.port.count = 0;
557 PortP->gs.port.tty = NULL;
563 static long rio_fw_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
568 /* The "dev" argument isn't used. */
570 rc = riocontrol(p, 0, cmd, arg, capable(CAP_SYS_ADMIN));
577 extern int RIOShortCommand(struct rio_info *p, struct Port *PortP, int command, int len, int arg);
579 static int rio_ioctl(struct tty_struct *tty, struct file *filp, unsigned int cmd, unsigned long arg)
581 void __user *argp = (void __user *)arg;
588 PortP = (struct Port *) tty->driver_data;
593 if ((rc = get_user(ival, (unsigned __user *) argp)) == 0) {
594 tty->termios->c_cflag = (tty->termios->c_cflag & ~CLOCAL) | (ival ? CLOCAL : 0);
599 if (access_ok(VERIFY_WRITE, argp, sizeof(struct serial_struct)))
600 rc = gs_getserial(&PortP->gs, argp);
603 if (PortP->State & RIO_DELETED) {
604 rio_dprintk(RIO_DEBUG_TTY, "BREAK on deleted RTA\n");
607 if (RIOShortCommand(p, PortP, RIOC_SBREAK, 2, 250) ==
609 rio_dprintk(RIO_DEBUG_INTR, "SBREAK RIOShortCommand failed\n");
615 if (PortP->State & RIO_DELETED) {
616 rio_dprintk(RIO_DEBUG_TTY, "BREAK on deleted RTA\n");
620 l = arg ? arg * 100 : 250;
623 if (RIOShortCommand(p, PortP, RIOC_SBREAK, 2,
624 arg ? arg * 100 : 250) == RIO_FAIL) {
625 rio_dprintk(RIO_DEBUG_INTR, "SBREAK RIOShortCommand failed\n");
632 if (access_ok(VERIFY_READ, argp, sizeof(struct serial_struct)))
633 rc = gs_setserial(&PortP->gs, argp);
644 /* The throttle/unthrottle scheme for the Specialix card is different
645 * from other drivers and deserves some explanation.
646 * The Specialix hardware takes care of XON/XOFF
647 * and CTS/RTS flow control itself. This means that all we have to
648 * do when signalled by the upper tty layer to throttle/unthrottle is
649 * to make a note of it here. When we come to read characters from the
650 * rx buffers on the card (rio_receive_chars()) we look to see if the
651 * upper layer can accept more (as noted here in rio_rx_throt[]).
652 * If it can't we simply don't remove chars from the cards buffer.
653 * When the tty layer can accept chars, we again note that here and when
654 * rio_receive_chars() is called it will remove them from the cards buffer.
655 * The card will notice that a ports buffer has drained below some low
656 * water mark and will unflow control the line itself, using whatever
657 * flow control scheme is in use for that port. -- Simon Allen
660 static void rio_throttle(struct tty_struct *tty)
662 struct Port *port = (struct Port *) tty->driver_data;
665 /* If the port is using any type of input flow
666 * control then throttle the port.
669 if ((tty->termios->c_cflag & CRTSCTS) || (I_IXOFF(tty))) {
670 port->State |= RIO_THROTTLE_RX;
677 static void rio_unthrottle(struct tty_struct *tty)
679 struct Port *port = (struct Port *) tty->driver_data;
682 /* Always unthrottle even if flow control is not enabled on
683 * this port in case we disabled flow control while the port
687 port->State &= ~RIO_THROTTLE_RX;
697 /* ********************************************************************** *
698 * Here are the initialization routines. *
699 * ********************************************************************** */
702 static struct vpd_prom *get_VPD_PROM(struct Host *hp)
704 static struct vpd_prom vpdp;
709 rio_dprintk(RIO_DEBUG_PROBE, "Going to verify vpd prom at %p.\n", hp->Caddr + RIO_VPD_ROM);
712 for (i = 0; i < sizeof(struct vpd_prom); i++)
713 *p++ = readb(hp->Caddr + RIO_VPD_ROM + i * 2);
714 /* read_rio_byte (hp, RIO_VPD_ROM + i*2); */
716 /* Terminate the identifier string.
717 *** requires one extra byte in struct vpd_prom *** */
720 if (rio_debug & RIO_DEBUG_PROBE)
721 my_hd((char *) &vpdp, 0x20);
728 static const struct tty_operations rio_ops = {
732 .put_char = gs_put_char,
733 .flush_chars = gs_flush_chars,
734 .write_room = gs_write_room,
735 .chars_in_buffer = gs_chars_in_buffer,
736 .flush_buffer = gs_flush_buffer,
738 .throttle = rio_throttle,
739 .unthrottle = rio_unthrottle,
740 .set_termios = gs_set_termios,
746 static int rio_init_drivers(void)
750 rio_driver = alloc_tty_driver(256);
753 rio_driver2 = alloc_tty_driver(256);
759 rio_driver->owner = THIS_MODULE;
760 rio_driver->driver_name = "specialix_rio";
761 rio_driver->name = "ttySR";
762 rio_driver->major = RIO_NORMAL_MAJOR0;
763 rio_driver->type = TTY_DRIVER_TYPE_SERIAL;
764 rio_driver->subtype = SERIAL_TYPE_NORMAL;
765 rio_driver->init_termios = tty_std_termios;
766 rio_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
767 rio_driver->flags = TTY_DRIVER_REAL_RAW;
768 tty_set_operations(rio_driver, &rio_ops);
770 rio_driver2->owner = THIS_MODULE;
771 rio_driver2->driver_name = "specialix_rio";
772 rio_driver2->name = "ttySR";
773 rio_driver2->major = RIO_NORMAL_MAJOR1;
774 rio_driver2->type = TTY_DRIVER_TYPE_SERIAL;
775 rio_driver2->subtype = SERIAL_TYPE_NORMAL;
776 rio_driver2->init_termios = tty_std_termios;
777 rio_driver2->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
778 rio_driver2->flags = TTY_DRIVER_REAL_RAW;
779 tty_set_operations(rio_driver2, &rio_ops);
781 rio_dprintk(RIO_DEBUG_INIT, "set_termios = %p\n", gs_set_termios);
783 if ((error = tty_register_driver(rio_driver)))
785 if ((error = tty_register_driver(rio_driver2)))
790 tty_unregister_driver(rio_driver);
792 put_tty_driver(rio_driver2);
794 put_tty_driver(rio_driver);
796 printk(KERN_ERR "rio: Couldn't register a rio driver, error = %d\n", error);
801 static void *ckmalloc(int size)
805 p = kzalloc(size, GFP_KERNEL);
811 static int rio_init_datastructures(void)
817 /* Many drivers statically allocate the maximum number of ports
818 There is no reason not to allocate them dynamically. Is there? -- REW */
819 /* However, the RIO driver allows users to configure their first
820 RTA as the ports numbered 504-511. We therefore need to allocate
821 the whole range. :-( -- REW */
823 #define RI_SZ sizeof(struct rio_info)
824 #define HOST_SZ sizeof(struct Host)
825 #define PORT_SZ sizeof(struct Port *)
826 #define TMIO_SZ sizeof(struct termios *)
827 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);
829 if (!(p = ckmalloc(RI_SZ)))
831 if (!(p->RIOHosts = ckmalloc(RIO_HOSTS * HOST_SZ)))
833 if (!(p->RIOPortp = ckmalloc(RIO_PORTS * PORT_SZ)))
835 p->RIOConf = RIOConf;
836 rio_dprintk(RIO_DEBUG_INIT, "Got : %p %p %p\n", p, p->RIOHosts, p->RIOPortp);
839 for (i = 0; i < RIO_PORTS; i++) {
840 port = p->RIOPortp[i] = ckmalloc(sizeof(struct Port));
844 rio_dprintk(RIO_DEBUG_INIT, "initing port %d (%d)\n", i, port->Mapped);
846 port->gs.magic = RIO_MAGIC;
847 port->gs.close_delay = HZ / 2;
848 port->gs.closing_wait = 30 * HZ;
849 port->gs.rd = &rio_real_driver;
850 spin_lock_init(&port->portSem);
852 * Initializing wait queue
854 init_waitqueue_head(&port->gs.port.open_wait);
855 init_waitqueue_head(&port->gs.port.close_wait);
858 /* We could postpone initializing them to when they are configured. */
863 if (rio_debug & RIO_DEBUG_INIT) {
864 my_hd(&rio_real_driver, sizeof(rio_real_driver));
871 free6:for (i--; i >= 0; i--)
872 kfree(p->RIOPortp[i]);
875 free3:*/ kfree(p->RIOPortp);
876 free2:kfree(p->RIOHosts);
878 rio_dprintk(RIO_DEBUG_INIT, "Not enough memory! %p %p %p\n", p, p->RIOHosts, p->RIOPortp);
884 static void __exit rio_release_drivers(void)
887 tty_unregister_driver(rio_driver2);
888 tty_unregister_driver(rio_driver);
889 put_tty_driver(rio_driver2);
890 put_tty_driver(rio_driver);
896 /* This was written for SX, but applies to RIO too...
899 There is another bit besides Bit 17. Turning that bit off
900 (on boards shipped with the fix in the eeprom) results in a
901 hang on the next access to the card.
904 /********************************************************
905 * Setting bit 17 in the CNTRL register of the PLX 9050 *
906 * chip forces a retry on writes while a read is pending.*
907 * This is to prevent the card locking up on Intel Xeon *
908 * multiprocessor systems with the NX chipset. -- NV *
909 ********************************************************/
911 /* Newer cards are produced with this bit set from the configuration
912 EEprom. As the bit is read/write for the CPU, we can fix it here,
913 if we detect that it isn't set correctly. -- REW */
915 static void fix_rio_pci(struct pci_dev *pdev)
917 unsigned long hwbase;
918 unsigned char __iomem *rebase;
921 #define CNTRL_REG_OFFSET 0x50
922 #define CNTRL_REG_GOODVALUE 0x18260000
924 hwbase = pci_resource_start(pdev, 0);
925 rebase = ioremap(hwbase, 0x80);
926 t = readl(rebase + CNTRL_REG_OFFSET);
927 if (t != CNTRL_REG_GOODVALUE) {
928 printk(KERN_DEBUG "rio: performing cntrl reg fix: %08x -> %08x\n", t, CNTRL_REG_GOODVALUE);
929 writel(CNTRL_REG_GOODVALUE, rebase + CNTRL_REG_OFFSET);
936 static int __init rio_init(void)
942 struct vpd_prom *vpdp;
946 struct pci_dev *pdev = NULL;
947 unsigned short tshort;
951 rio_dprintk(RIO_DEBUG_INIT, "Initing rio module... (rio_debug=%d)\n", rio_debug);
953 if (abs((long) (&rio_debug) - rio_debug) < 0x10000) {
954 printk(KERN_WARNING "rio: rio_debug is an address, instead of a value. " "Assuming -1. Was %x/%p.\n", rio_debug, &rio_debug);
958 if (misc_register(&rio_fw_device) < 0) {
959 printk(KERN_ERR "RIO: Unable to register firmware loader driver.\n");
963 retval = rio_init_datastructures();
965 misc_deregister(&rio_fw_device);
969 /* First look for the JET devices: */
970 while ((pdev = pci_get_device(PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8, pdev))) {
973 if (pci_enable_device(pdev))
976 /* Specialix has a whole bunch of cards with
977 0x2000 as the device ID. They say its because
978 the standard requires it. Stupid standard. */
979 /* It seems that reading a word doesn't work reliably on 2.0.
980 Also, reading a non-aligned dword doesn't work. So we read the
981 whole dword at 0x2c and extract the word at 0x2e (SUBSYSTEM_ID)
983 pci_read_config_dword(pdev, 0x2c, &tint);
984 tshort = (tint >> 16) & 0xffff;
985 rio_dprintk(RIO_DEBUG_PROBE, "Got a specialix card: %x.\n", tint);
986 if (tshort != 0x0100) {
987 rio_dprintk(RIO_DEBUG_PROBE, "But it's not a RIO card (%d)...\n", tshort);
990 rio_dprintk(RIO_DEBUG_PROBE, "cp1\n");
992 hp = &p->RIOHosts[p->RIONumHosts];
993 hp->PaddrP = pci_resource_start(pdev, 2);
994 hp->Ivec = pdev->irq;
995 if (((1 << hp->Ivec) & rio_irqmask) == 0)
997 hp->Caddr = ioremap(p->RIOHosts[p->RIONumHosts].PaddrP, RIO_WINDOW_LEN);
998 hp->CardP = (struct DpRam __iomem *) hp->Caddr;
1000 hp->Copy = rio_copy_to_card;
1001 hp->Mode = RIO_PCI_BOOT_FROM_RAM;
1002 spin_lock_init(&hp->HostLock);
1003 rio_reset_interrupt(hp);
1004 rio_start_card_running(hp);
1006 rio_dprintk(RIO_DEBUG_PROBE, "Going to test it (%p/%p).\n", (void *) p->RIOHosts[p->RIONumHosts].PaddrP, p->RIOHosts[p->RIONumHosts].Caddr);
1007 if (RIOBoardTest(p->RIOHosts[p->RIONumHosts].PaddrP, p->RIOHosts[p->RIONumHosts].Caddr, RIO_PCI, 0) == 0) {
1008 rio_dprintk(RIO_DEBUG_INIT, "Done RIOBoardTest\n");
1009 writeb(0xFF, &p->RIOHosts[p->RIONumHosts].ResetInt);
1010 p->RIOHosts[p->RIONumHosts].UniqueNum =
1011 ((readb(&p->RIOHosts[p->RIONumHosts].Unique[0]) & 0xFF) << 0) |
1012 ((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);
1013 rio_dprintk(RIO_DEBUG_PROBE, "Hmm Tested ok, uniqid = %x.\n", p->RIOHosts[p->RIONumHosts].UniqueNum);
1017 p->RIOHosts[p->RIONumHosts].pdev = pdev;
1020 p->RIOLastPCISearch = 0;
1024 iounmap(p->RIOHosts[p->RIONumHosts].Caddr);
1025 p->RIOHosts[p->RIONumHosts].Caddr = NULL;
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->RIOHosts[p->RIONumHosts].pdev = pdev;
1073 p->RIOLastPCISearch = 0;
1077 iounmap(p->RIOHosts[p->RIONumHosts].Caddr);
1078 p->RIOHosts[p->RIONumHosts].Caddr = NULL;
1081 printk(KERN_ERR "Found an older RIO PCI card, but the driver is not " "compiled to support it.\n");
1086 /* Now probe for ISA cards... */
1087 for (i = 0; i < NR_RIO_ADDRS; i++) {
1088 hp = &p->RIOHosts[p->RIONumHosts];
1089 hp->PaddrP = rio_probe_addrs[i];
1090 /* There was something about the IRQs of these cards. 'Forget what.--REW */
1092 hp->Caddr = ioremap(p->RIOHosts[p->RIONumHosts].PaddrP, RIO_WINDOW_LEN);
1093 hp->CardP = (struct DpRam __iomem *) hp->Caddr;
1095 hp->Copy = rio_copy_to_card; /* AT card PCI???? - PVDL
1096 * -- YES! this is now a normal copy. Only the
1097 * old PCI card uses the special PCI copy.
1098 * Moreover, the ISA card will work with the
1099 * special PCI copy anyway. -- REW */
1101 spin_lock_init(&hp->HostLock);
1103 vpdp = get_VPD_PROM(hp);
1104 rio_dprintk(RIO_DEBUG_PROBE, "Got VPD ROM\n");
1106 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)) {
1107 /* Board is present... */
1108 if (RIOBoardTest(hp->PaddrP, hp->Caddr, RIO_AT, 0) == 0) {
1109 /* ... and feeling fine!!!! */
1110 rio_dprintk(RIO_DEBUG_PROBE, "Hmm Tested ok, uniqid = %x.\n", p->RIOHosts[p->RIONumHosts].UniqueNum);
1111 if (RIOAssignAT(p, hp->PaddrP, hp->Caddr, 0)) {
1112 rio_dprintk(RIO_DEBUG_PROBE, "Hmm Tested ok, host%d uniqid = %x.\n", p->RIONumHosts, p->RIOHosts[p->RIONumHosts - 1].UniqueNum);
1126 for (i = 0; i < p->RIONumHosts; i++) {
1127 hp = &p->RIOHosts[i];
1129 int mode = IRQF_SHARED;
1130 if (hp->Ivec & 0x8000) {
1134 rio_dprintk(RIO_DEBUG_INIT, "Requesting interrupt hp: %p rio_interrupt: %d Mode: %x\n", hp, hp->Ivec, hp->Mode);
1135 retval = request_irq(hp->Ivec, rio_interrupt, mode, "rio", hp);
1136 rio_dprintk(RIO_DEBUG_INIT, "Return value from request_irq: %d\n", retval);
1138 printk(KERN_ERR "rio: Cannot allocate irq %d.\n", hp->Ivec);
1141 rio_dprintk(RIO_DEBUG_INIT, "Got irq %d.\n", hp->Ivec);
1142 if (hp->Ivec != 0) {
1143 rio_dprintk(RIO_DEBUG_INIT, "Enabling interrupts on rio card.\n");
1144 hp->Mode |= RIO_PCI_INT_ENABLE;
1146 hp->Mode &= ~RIO_PCI_INT_ENABLE;
1147 rio_dprintk(RIO_DEBUG_INIT, "New Mode: %x\n", hp->Mode);
1148 rio_start_card_running(hp);
1150 /* Init the timer "always" to make sure that it can safely be
1151 deleted when we unload... */
1153 setup_timer(&hp->timer, rio_pollfunc, i);
1155 rio_dprintk(RIO_DEBUG_INIT, "Starting polling at %dj intervals.\n", rio_poll);
1156 mod_timer(&hp->timer, jiffies + rio_poll);
1161 rio_dprintk(RIO_DEBUG_INIT, "rio: total of %d boards detected.\n", found);
1164 /* deregister the misc device we created earlier */
1165 misc_deregister(&rio_fw_device);
1169 return found ? 0 : -EIO;
1173 static void __exit rio_exit(void)
1180 for (i = 0, hp = p->RIOHosts; i < p->RIONumHosts; i++, hp++) {
1181 RIOHostReset(hp->Type, hp->CardP, hp->Slot);
1183 free_irq(hp->Ivec, hp);
1184 rio_dprintk(RIO_DEBUG_INIT, "freed irq %d.\n", hp->Ivec);
1186 /* It is safe/allowed to del_timer a non-active timer */
1187 del_timer_sync(&hp->timer);
1190 if (hp->Type == RIO_PCI)
1191 pci_dev_put(hp->pdev);
1194 if (misc_deregister(&rio_fw_device) < 0) {
1195 printk(KERN_INFO "rio: couldn't deregister control-device\n");
1199 rio_dprintk(RIO_DEBUG_CLEANUP, "Cleaning up drivers\n");
1201 rio_release_drivers();
1203 /* Release dynamically allocated memory */
1211 module_init(rio_init);
1212 module_exit(rio_exit);