The Digiboard EPCA driver supplied with Linux 2.4.x didn't work for
me, so I took the latest Digi driver and patched it to make it
work with 2.4 and devfs. I'm sure that I managed to horribly
break some stuff, but hey, it works for me. The patch to their
latest (4001450M) driver is included below, or, get the updated
driver from:
http://neurosis.mit.edu/~jim/epca/
-jim
diff -Naur epca-1.4.5-1/dl/Makefile epca-1.4.5.1-jim/dl/Makefile
--- epca-1.4.5-1/dl/Makefile Fri Mar 24 15:33:25 2000
+++ epca-1.4.5.1-jim/dl/Makefile Sun Mar 11 14:16:33 2001
@@ -1,14 +1,15 @@
+all: digiDload cxconf epcxconf
+
digiDload: digiDload.c
- cc -g -O2 -Wall digiDload.c -o digiDload
+ cc $(CFLAGS) -Wall digiDload.c -o digiDload
cxconf: epcxconf.c
- cc -g -O2 epcxconf.c -o cxconf
+ cc $(CFLAGS) epcxconf.c -o cxconf
epcxconf: epcxconf.c
- cc -g -O2 epcxconf.c -o epcxconf -DEPCXCONF
+ cc $(CFLAGS) epcxconf.c -o epcxconf -DEPCXCONF
clean:
rm -f *~ *.o epcxconf cxconf digiDload
-all: digiDload cxconf epcxconf
diff -Naur epca-1.4.5-1/dl/digiDload.c epca-1.4.5.1-jim/dl/digiDload.c
--- epca-1.4.5-1/dl/digiDload.c Mon Apr 24 11:16:57 2000
+++ epca-1.4.5.1-jim/dl/digiDload.c Sun Mar 11 14:40:22 2001
@@ -196,7 +196,16 @@
typedef unsigned char unchar;
extern int iopl( int level );
+#ifndef __KERNEL__
+/* 2.4 needs __KERNEL__ defined for tqueue.h */
+#define __KERNEL__
+#include <linux/tqueue.h>
+#undef __KERNEL__
+#else
+#include <linux/tqueue.h>
+#endif
+#include <linux/config.h>
#include <stdio.h>
#include <fcntl.h>
#include <errno.h>
@@ -220,7 +229,7 @@
#include <asm/io.h>
#include <termio.h>
-#include <linux/tqueue.h>
+
#include <sys/ioctl.h>
#include "../drv/digi1.h"
@@ -240,15 +249,15 @@
/* This is used to calculate the path to digiDload, for temp_name */
-#define DIRPATH "/etc/digiepca/"
+#define DIRPATH "/etc/digi/"
/* C/X concentrator download image */
-char *cxcon_fname = "/etc/digiepca/cxcon.bin";
-char *epcxcon_fname = "/etc/digiepca/fxcon.bin";
+char *cxcon_fname = "/etc/digi/cxcon.bin";
+char *epcxcon_fname = "/etc/digi/fxcon.bin";
/* C/X concentrator configuration */
-#define CXCONFIG "/etc/digiepca/cxconf.dat"
-#define EPCXCONFIG "/etc/digiepca/epcxconf.dat"
+#define CXCONFIG "/etc/digi/cxconf.dat"
+#define EPCXCONFIG "/etc/digi/epcxconf.dat"
/* CX Concentrator configuration strings can be a maximum of 21 bytes long */
#define CXCFGLEN 21
@@ -1119,7 +1128,7 @@
target_addr = fm->addr ;
temp_name = (char *)malloc((size_t)((strlen(fm->fname)) + strlen(DIRPATH)));
*temp_name = 0; /* Make first character null; so strcat can work */
- strcat(temp_name,"/etc/digiepca/");
+ strcat(temp_name,"/etc/digi/");
strcat(temp_name,fm->fname);
if (verbose) {
mess(0, 1, "Downloading %s to %lx on %s\n", temp_name, (long) fm->addr, btypes[di->info_bdtype].desc );
@@ -1953,6 +1962,10 @@
* Given an channel number, return the corresponding device's pathname
*/
char *chan_to_path( int channo ) {
+
+#ifdef CONFIG_DEVFS_FS
+ sprintf(dev_path,"/dev/digi/%d",channo);
+#else
char bankname;
int offset;
@@ -1960,7 +1973,7 @@
bankname = epca_banknames[ channo/NDEV_MAJOR ];
offset = channo % NDEV_MAJOR;
sprintf( dev_path, "%s%s%c%d", BASENAME, TTY_BASENAME, bankname, offset );
-
+#endif
return( dev_path );
}
@@ -1972,6 +1985,10 @@
* numbers.
*/
void make_nodes( int first, int num, int make ) {
+
+#ifndef CONFIG_DEVFS_FS
+ /* Only do this if we're not using DEVFS. */
+
int major = 0, minor = 0;
int mode = 0666 | S_IFCHR;
int channo, ret;
@@ -2014,12 +2031,18 @@
}
}
+#endif
+
}
/* update_devs
* unlink old and mkdev current device links
*/
void update_devs() {
+
+#ifndef CONFIG_DEVFS_FS
+ /* Only do this if we're not using DEVFS. */
+
int crd, make;
// digiConfig creates nodes for the first 256 ports, others created here
//if( port_count > NDEV_MAJOR )
@@ -2040,6 +2063,7 @@
make_nodes( board[crd].digi_info.firstchan,
board[crd].digi_info.info_nports, make );
}
+#endif
}
void doargs( int ac, char *av[] ) {
@@ -2075,9 +2099,16 @@
doargs( argc, argv );
+
+#ifdef CONFIG_DEVFS_FS
+ if ((digiFD = open("/dev/digi/ctl", O_RDWR)) < 0 ) {
+ perror(" cannot open digi download device ");
+ }
+#else
if ((digiFD = open("/dev/digiCtl", O_RDWR)) < 0 ) {
perror(" cannot open digi download device ");
}
+#endif
if( init(digiFD) )
return( 1 );
diff -Naur epca-1.4.5-1/drv/Makefile epca-1.4.5.1-jim/drv/Makefile
--- epca-1.4.5-1/drv/Makefile Wed Jun 28 15:10:15 2000
+++ epca-1.4.5.1-jim/drv/Makefile Sun Mar 11 14:17:09 2001
@@ -1,5 +1,5 @@
-CFLAGS = -O2 -D__KERNEL__ -DMODULE -DLINUX -DKERNEL2_0 -Wall -I/usr/src/linux/include
+CFLAGS += -D__KERNEL__ -DMODULE -DLINUX -Wall -I/usr/src/linux/include
LDFLAGS = -s -N
CC=cc
diff -Naur epca-1.4.5-1/drv/epca.c epca-1.4.5.1-jim/drv/epca.c
--- epca-1.4.5-1/drv/epca.c Wed Jun 28 16:01:43 2000
+++ epca-1.4.5.1-jim/drv/epca.c Sun Mar 11 14:57:16 2001
@@ -461,6 +461,9 @@
were using it wrong in a few instances, and it was causing
problems in newer redhat versions.
-- Changed version number to 1.4.5-1
+March 11, 2001: [email protected]
+ -- Support for 2.4 and devfs added by Jim Paris <[email protected]>.
+ -- Changed version number to 1.4.5.1-jim
-------------------------------------------------------------------------- */
#ifdef MODULE
@@ -580,7 +583,7 @@
#include "epcaconfig.h"
/* ---------------------- Begin defines ------------------------ */
-#define VERSION "1.4.5-1"
+#define VERSION "1.4.5.1-jim"
@@ -624,7 +627,11 @@
#ifdef KERNEL2_x
static int pc_timeron = 0;
+#if LINUX_VERSION_CODE > 0x020400
+static struct timer_list pc_timer = { {NULL, NULL}, 0, 0, 0};
+#else
static struct timer_list pc_timer = {NULL, NULL, 0, 0, 0};
+#endif
#endif /* KERNEL2_x */
@@ -803,7 +810,9 @@
#ifdef KERNEL2_x
static int get_termio(struct tty_struct *, struct termio *);
static int pc_write(struct tty_struct *, int, const unsigned char *, int);
+#if LINUX_VERSION_CODE < 0x020400
static void do_pc_bh(void);
+#endif
int pc_init(void);
#else
static int pc_write(struct tty_struct *, int, unsigned char *, int);
@@ -842,8 +851,13 @@
#ifdef KERNEL2_x
#include <linux/proc_fs.h>
+#if LINUX_VERSION_CODE < 0x020400
int
epca_read_proc( char *buf, char **start, off_t offset, int len, int unused ){
+#else
+int epca_read_proc( char *buf, char **start, off_t offset, int len ){
+#endif
+
int crd;
len=sprintf( buf, "\nEPCA Linux Driver Version %s\n",VERSION);
@@ -882,6 +896,7 @@
return len;
}
+#if LINUX_VERSION_CODE < 0x020400
struct proc_dir_entry epca_proc_entry = {
0, /* low_ino: The inode -- dynamic */
4, "epca", /* len of name and name */
@@ -891,6 +906,7 @@
NULL, /* operations -- use default */
&epca_read_proc, /* function used to read data */
};
+#endif
#endif /* KERNEL2_x */
#endif /* CONFIG_PROC_FS */
@@ -1144,6 +1160,9 @@
-------------------------------------------------------------------------*/
ch->event |= 1 << event;
+
+#if LINUX_VERSION_CODE < 0x020400
+
#if (LINUX_VERSION_CODE >= 0x020100)
queue_task(&ch->tqueue, &tq_epca);
#else
@@ -1155,6 +1174,11 @@
can see.
-------------------------------------------------------------------*/
mark_bh(DIGI_BH);
+#else /* kernel 2.4 */
+ MOD_INC_USE_COUNT;
+ if(schedule_task(&ch->tqueue)==0)
+ MOD_DEC_USE_COUNT;
+#endif
} /* End pc_sched_event */
@@ -1413,7 +1437,9 @@
---------------------------------------------------------------------- */
/* Prevent future Digi programmed interrupts from coming active */
+#if LINUX_VERSION_CODE < 0x020400
disable_bh(DIGI_BH);
+#endif
ch->asyncflags &= ~ASYNC_INITIALIZED;
restore_flags(flags);
@@ -2428,8 +2454,12 @@
}
if( ch->tmp_buf ) {
+#if LINUX_VERSION_CODE < 0x020400
kfree_s(ch->tmp_buf, ch->txbufsize);
ch->tmp_buf = NULL;
+#else
+ kfree(ch->tmp_buf);
+#endif
}
}
@@ -2450,6 +2480,7 @@
}
}
+#if LINUX_VERSION_CODE < 0x020400
if (tty_unregister_driver(&pc_callout) ) {
epca_mess(KERN_WARNING, "cleanup_module failed to un-register pc_callout driver\n");
} else {
@@ -2460,6 +2491,7 @@
if( pc_callout.table )
vfree( pc_callout.table );
}
+#endif
if (tty_unregister_driver(&pc_info) )
epca_mess(KERN_WARNING, "cleanup_module failed to un-register pc_info driver\n");
@@ -2484,7 +2516,11 @@
#ifdef CONFIG_PROC_FS
+#if LINUX_VERSION_CODE < 0x020400
proc_unregister( &proc_root, epca_proc_entry.low_ino);
+#else
+ remove_proc_entry("epca",NULL);
+#endif
#endif /* CONFIG_PROC_FS */
// Free up the array of tty_driver arrays
@@ -2569,7 +2605,10 @@
memory.
------------------------------------------------------------------*/
- ulong flags, save_loops_per_sec;
+ ulong flags;
+#if LINUX_VERSION_CODE < 0x020400
+ ulong save_loops_per_sec;
+#endif
int crd, bank;
struct board_info *bd;
unsigned char board_id = 0;
@@ -2754,8 +2793,12 @@
memset(&lpc_driver, 0, sizeof(struct tty_driver));
lpc_driver.magic = TTY_DRIVER_MAGIC;
+#ifdef CONFIG_DEVFS_FS
+ lpc_driver.name="digi/%d";
+#else
// Need to malloc memory for driver.name when used
//lpc_driver.name =TTY_NAME;
+#endif
lpc_driver.major = DIGI_MAJOR;
//pc_driver.major = 0;
lpc_driver.minor_start = 0;
@@ -2797,6 +2840,9 @@
lpc_driver.unthrottle = pc_unthrottle;
lpc_driver.hangup = pc_hangup;
+#if LINUX_VERSION_CODE < 0x020400
+ /* Callout device is deprecated. */
+
pc_callout = lpc_driver;
pc_callout.name = "cud";
@@ -2805,9 +2851,14 @@
pc_callout.minor_start = 0;
pc_callout.init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
pc_callout.subtype = SERIAL_TYPE_CALLOUT;
+#endif
pc_info = lpc_driver;
+#ifdef CONFIG_DEVFS_FS
+ pc_info.name = "digi/ctl";
+#else
pc_info.name = "digiCtl";
+#endif
pc_info.major = DIGIINFOMAJOR;
pc_info.minor_start = 0;
pc_info.init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL;
@@ -2818,6 +2869,18 @@
pc_info.num = 1;
for( bank=0; bank<n_banks; ++bank ) {
+#ifdef CONFIG_DEVFS_FS
+ /* I have no use for this, so I didn't bother doing it. */
+ /* I think the way it should work would be to allocate */
+ /* names like "/dev/digi/0/0", "/dev/digi/0/1", */
+ /* "/dev/digi/1/0", etc, where the first number is the */
+ /* bank and the second is the device. The bank number */
+ /* would be omitted if there was only one. */
+ if(bank>0) {
+ epca_mess(KERN_ERR,"Multiple banks with devfs unsupported\n");
+ break;
+ }
+#endif
if( bank >= (sizeof(TTY_BANKNAMES)-1) ) {
epca_mess( KERN_ERR,
"No more bank names available. Ignoring banks >= %d\n", bank );
@@ -2842,6 +2905,7 @@
// Allocate and initialize the driver name to include the
// current bank designator, e.g: first ttyD, then ttyE, then ttyF...
+#ifndef CONFIG_DEVFS_FS
if( !(pc_driver[bank]->name =
kmalloc(sizeof(TTY_NAME), GFP_ATOMIC)) ) {
epca_mess(KERN_ERR, "Couldn't malloc name space, bank:%d", bank);
@@ -2852,6 +2916,7 @@
strcpy( (char *)pc_driver[bank]->name, TTY_NAME );
*(((char *)pc_driver[bank]->name) + strlen(pc_driver[bank]->name)-1)
= epca_banknames[bank];
+#endif
// The first bank's major number is defined in <major.h>;
// subsequent banks' major numbers are allocated dynamically
@@ -2899,6 +2964,8 @@
}
+#if LINUX_VERSION_CODE < 0x020400
+ /* callout is deprecated, kill it already */
// Only bank 0 (up to first 256 units) have corresponding "cu" devices.
pc_callout.num = pc_driver[0]->num;
@@ -2931,6 +2998,8 @@
ret = -EPERM;
goto fail6;
}
+#endif /* LINUX_VERSION_CODE < 0x020400 */
+
if (tty_register_driver(&pc_info) < 0 ) {
epca_mess( KERN_ERR, "Couldn't register info device");
ret = -EPERM;
@@ -2941,8 +3010,10 @@
loops_per_sec hasn't been set at this point :-(, so fake it out...
I set it, so that I can use the __delay() function.
------------------------------------------------------------------------ */
+#if LINUX_VERSION_CODE < 0x020400
save_loops_per_sec = loops_per_sec;
loops_per_sec = 13L * 500000L;
+#endif
/*----------*/
save_flags(flags);
@@ -3125,9 +3196,10 @@
} /* End for each card */
restore_flags(flags);
+#if LINUX_VERSION_CODE < 0x020400
loops_per_sec = save_loops_per_sec; /* reset it to what it should be */
-
init_bh(DIGI_BH, do_pc_bh);
+#endif
/* -------------------------------------------------------------------
Start up the poller to check for events on all enabled boards
---------------------------------------------------------------------- */
@@ -3146,19 +3218,28 @@
/* -------------------------------------------------------------------
Register /proc/epca
---------------------------------------------------------------------- */
+#if LINUX_VERSION_CODE < 0x020400
#if LINUX_VERSION_CODE < 0x020200
+ /* up to 2.2 */
proc_register_dynamic( &proc_root, &epca_proc_entry);
-#else
+#else
+ /* 2.2 only */
// proc_register() has dynamic allocation code built-in in 2.2 kernels
proc_register( &proc_root, &epca_proc_entry);
#endif
+#else
+ /* 2.4+ */
+ if(!create_proc_info_entry("epca",0,NULL,epca_read_proc)) {
+ printk(KERN_ERR "epca: register /proc/epca failed\n");
+ }
+#endif
#endif /* CONFIG_PROC_FS */
/* Initialize KME waitqueues...CWS */
/* Only 2.2.x compat for now..gonna do 2.3.x in a bit.. */
for(itmp=0;itmp<num_cards;itmp++)
- boards[itmp].kme_wait = 0;
+ memset(&boards[itmp].kme_wait,0,sizeof(boards[itmp].kme_wait));
return(0);
@@ -3168,12 +3249,15 @@
// intentionally falls through to the code for earlier ones.
// ("goto" has its uses!)
fail7:
+#if LINUX_VERSION_CODE < 0x020400
if( tty_unregister_driver(&pc_callout) ) {
epca_mess( KERN_ERR,
"pc_init: Cannot unregister callout device\n" );
}
fail6:
+#endif
bank = n_banks; // This will be decremented at fail5
+#if LINUX_VERSION_CODE < 0x020400
if( pc_callout.termios_locked )
vfree( pc_callout.termios_locked );
fail5B:
@@ -3182,6 +3266,7 @@
fail5A:
if( pc_callout.termios )
vfree( pc_callout.termios );
+#endif
fail5:
while( --bank >= 0 ) {
if( tty_unregister_driver(pc_driver[bank]) ) {
@@ -5811,6 +5896,8 @@
/* --------------------- Begin do_pc_bh ----------------------- */
+#if LINUX_VERSION_CODE < 0x020400
+
#ifdef KERNEL2_x
static void do_pc_bh(void)
#else
@@ -5821,6 +5908,8 @@
run_task_queue(&tq_epca);
} /* End do_pc_bh */
+
+#endif
/* --------------------- Begin do_softint ----------------------- */
diff -Naur epca-1.4.5-1/drv/epca.h epca-1.4.5.1-jim/drv/epca.h
--- epca-1.4.5-1/drv/epca.h Fri Mar 24 14:44:18 2000
+++ epca-1.4.5.1-jim/drv/epca.h Sun Mar 11 14:38:44 2001
@@ -282,8 +282,11 @@
* (e.g: the 'D' in /dev/ttyD"). Since some letters are already reserved
* (e.g: "ttyS*" is reserved for the internal serial ports), the available
* letters are listed in order in TTY_BANKNAMES */
-#define TTY_BASENAME "tty"
+#ifdef CONFIG_DEVFS_FS
+#define TTY_NAME "digi/%d"
+#else
#define TTY_NAME "ttyD"
+#endif
/* Skip 'S' -- ttyS* reserved for built-in comm ports */
+#define TTY_BASENAME "tty"
#define TTY_BANKNAMES "DEFGHIJKLMNOPQRTUVWXYZ"
-