502 lines
10 KiB
Bash
Executable File
502 lines
10 KiB
Bash
Executable File
#!/bin/sh
|
|
# This writes a skeleton driver and puts it into the kernel tree for you
|
|
#arg1 is lowercase "foo"
|
|
#
|
|
# It also creates a directory under /usr/src/lkm to help you create
|
|
#loadable kernel modules, though without much use except for development.
|
|
#
|
|
# Trust me, RUN THIS SCRIPT :)
|
|
#
|
|
#-------cut here------------------
|
|
cd /sys/i386/conf
|
|
|
|
if [ "${1}X" = "X" ]
|
|
then
|
|
echo "Hey , how about some help here.. give me a device name!"
|
|
exit 1
|
|
fi
|
|
|
|
if [ -d /usr/src/lkm ]
|
|
then
|
|
mkdir /usr/src/lkm/${1}
|
|
fi
|
|
|
|
UPPER=`echo ${1} |tr "[:lower:]" "[:upper:]"`
|
|
cat >files.${UPPER} <<DONE
|
|
i386/isa/${1}.c optional ${1} device-driver
|
|
DONE
|
|
|
|
cat >${UPPER} <<DONE
|
|
# Configuration file for kernel type: ${UPPER}
|
|
ident ${UPPER}
|
|
# \$Id: make_device_driver.sh,v 1.4 1998/10/22 16:10:29 bde Exp $"
|
|
DONE
|
|
|
|
grep -v GENERIC < GENERIC >>${UPPER}
|
|
|
|
cat >>${UPPER} <<DONE
|
|
# trust me, you'll need this
|
|
options DDB
|
|
device ${1}0 at isa? port 0x234 bio irq 5
|
|
DONE
|
|
|
|
cat >../isa/${1}.c <<DONE
|
|
/*
|
|
* Copyright ME
|
|
*
|
|
* ${1} driver
|
|
* \$Id: make_device_driver.sh,v 1.4 1998/10/22 16:10:29 bde Exp $
|
|
*/
|
|
|
|
|
|
#include "${1}.h" /* generated file.. defines N${UPPER} */
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h> /* SYSINIT stuff */
|
|
#include <sys/conf.h> /* cdevsw stuff */
|
|
#include <sys/malloc.h> /* malloc region definitions */
|
|
#include <machine/clock.h> /* DELAY() */
|
|
#include <i386/isa/isa.h> /* ISA bus port definitions etc. */
|
|
#include <i386/isa/isa_device.h>/* ISA bus configuration structures */
|
|
#include <sys/${1}io.h> /* ${1} IOCTL definitions */
|
|
#ifdef DEVFS
|
|
#include <sys/devfsext.h> /* DEVFS defintitions */
|
|
#endif /* DEVFS */
|
|
|
|
|
|
|
|
/* Function prototypes (these should all be static) */
|
|
static d_open_t ${1}open;
|
|
static d_close_t ${1}close;
|
|
static d_read_t ${1}read;
|
|
static d_write_t ${1}write;
|
|
static d_ioctl_t ${1}ioctl;
|
|
static d_mmap_t ${1}mmap;
|
|
static d_poll_t ${1}poll;
|
|
static int ${1}probe (struct isa_device *);
|
|
static int ${1}attach (struct isa_device *);
|
|
#ifdef ${UPPER}_MODULE
|
|
static ointhand2_t ${1}intr; /* should actually have type inthand2_t */
|
|
#endif
|
|
|
|
#define CDEV_MAJOR 20
|
|
static struct cdevsw ${1}_cdevsw = {
|
|
${1}open,
|
|
${1}close,
|
|
${1}read,
|
|
${1}write,
|
|
${1}ioctl,
|
|
nullstop,
|
|
nullreset,
|
|
nodevtotty,
|
|
${1}poll,
|
|
${1}mmap,
|
|
NULL,
|
|
"${1}",
|
|
NULL,
|
|
-1 };
|
|
|
|
struct isa_driver ${1}driver = {
|
|
${1}probe,
|
|
${1}attach,
|
|
"${1}" };
|
|
|
|
/*
|
|
* device specific Misc defines
|
|
*/
|
|
#define BUFFERSIZE 1024
|
|
#define NUMPORTS 4
|
|
#define UNIT(dev) minor(dev) /* assume one minor number per unit */
|
|
|
|
/*
|
|
* One of these per allocated device
|
|
*/
|
|
struct ${1}_softc {
|
|
struct isa_device *dev;
|
|
char buffer[BUFFERSIZE];
|
|
#ifdef DEVFS
|
|
static void *devfs_token;
|
|
#endif
|
|
} ;
|
|
|
|
typedef struct ${1}_softc *sc_p;
|
|
|
|
static sc_p sca[N${UPPER}];
|
|
|
|
/* add your own test to see if it exists */
|
|
/* should return the number of ports needed */
|
|
static int
|
|
${1}probe (struct isa_device *dev)
|
|
{
|
|
char val;
|
|
int unit = dev->id_unit;
|
|
sc_p scp = sca[unit];
|
|
|
|
/*
|
|
* Check the unit makes sense.
|
|
*/
|
|
if (unit > N${UPPER}) {
|
|
printf("bad unit (%d)\n", unit);
|
|
return (0);
|
|
}
|
|
if (scp) {
|
|
printf("unit %d already attached\n", unit);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* try see if the device is there.
|
|
*/
|
|
val = inb (dev->id_iobase);
|
|
if ( val != 42 ) {
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* ok, we got one we think
|
|
* do some further (this time possibly destructive) tests.
|
|
*/
|
|
outb (dev->id_iobase, 0xff);
|
|
DELAY (10000); /* 10 ms delay */
|
|
val = inb (dev->id_iobase) & 0x0f;
|
|
return ((val & 0x0f) == 0x0f)? NUMPORTS : 0 ;
|
|
}
|
|
|
|
/*
|
|
* Called if the probe succeeded.
|
|
* We can be destructive here as we know we have the device.
|
|
* we can also trust the unit number.
|
|
*/
|
|
static int
|
|
${1}attach (struct isa_device *dev)
|
|
{
|
|
int unit = dev->id_unit;
|
|
sc_p scp = sca[unit];
|
|
|
|
/*
|
|
* Attach our interrupt handler to the device struct. Our caller
|
|
* will attach it to the hardware soon after we return.
|
|
*/
|
|
dev->id_ointr = ${1}intr;
|
|
|
|
/*
|
|
* Allocate storage for this instance .
|
|
*/
|
|
scp = malloc(sizeof(*scp), M_DEVBUF, M_NOWAIT);
|
|
if( scp == NULL) {
|
|
printf("${1}%d failed to allocage driver strorage\n", unit);
|
|
return (0);
|
|
}
|
|
bzero(scp, sizeof(*scp));
|
|
sca[unit] = scp;
|
|
|
|
/*
|
|
* Store whatever seems wise.
|
|
*/
|
|
scp->dev = dev;
|
|
#if DEVFS
|
|
scp->devfs_token = devfs_add_devswf(&${1}_cdevsw, unit, DV_CHR,
|
|
UID_ROOT, GID_KMEM, 0600, "${1}%d", unit);
|
|
#endif
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Macro to check that the unit number is valid
|
|
* Often this isn't needed as once the open() is performed,
|
|
* the unit number is pretty much safe.. The exception would be if we
|
|
* implemented devices that could "go away". in which case all these routines
|
|
* would be wise to check the number, DIAGNOSTIC or not.
|
|
*/
|
|
#define CHECKUNIT(RETVAL) \
|
|
do { /* the do-while is a safe way to do this grouping */ \
|
|
if (unit > N${UPPER}) { \
|
|
printf(__FUNCTION__ ":bad unit %d\n", unit); \
|
|
return (RETVAL); \
|
|
} \
|
|
if (scp == NULL) { \
|
|
printf( __FUNCTION__ ": unit %d not attached\n", unit);\
|
|
return (RETVAL); \
|
|
} \
|
|
} while (0)
|
|
#ifdef DIAGNOSTIC
|
|
#define CHECKUNIT_DIAG(RETVAL) CHECKUNIT(RETVAL)
|
|
#else /* DIAGNOSTIC */
|
|
#define CHECKUNIT_DIAG(RETVAL)
|
|
#endif /* DIAGNOSTIC */
|
|
|
|
static void
|
|
${1}intr(int unit)
|
|
{
|
|
sc_p scp = sca[unit];
|
|
|
|
/*
|
|
* well we got an interupt, now what?
|
|
* Theoretically we don't need to check the unit.
|
|
*/
|
|
return;
|
|
}
|
|
|
|
int ${1}ioctl (dev_t dev, int cmd, caddr_t data, int flag, struct proc *p)
|
|
{
|
|
int unit = UNIT (dev);
|
|
sc_p scp = sca[unit];
|
|
|
|
CHECKUNIT_DIAG(ENXIO);
|
|
|
|
switch (cmd) {
|
|
case DHIOCRESET:
|
|
/* whatever resets it */
|
|
outb(scp->dev->id_iobase, 0xff);
|
|
break;
|
|
default:
|
|
return ENXIO;
|
|
}
|
|
return (0);
|
|
}
|
|
/*
|
|
* You also need read, write, open, close routines.
|
|
* This should get you started
|
|
*/
|
|
static int
|
|
${1}open(dev_t dev, int oflags, int devtype, struct proc *p)
|
|
{
|
|
int unit = UNIT (dev);
|
|
sc_p scp = sca[unit];
|
|
|
|
CHECKUNIT(ENXIO);
|
|
|
|
/*
|
|
* Do processing
|
|
*/
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
${1}close(dev_t dev, int fflag, int devtype, struct proc *p)
|
|
{
|
|
int unit = UNIT (dev);
|
|
sc_p scp = sca[unit];
|
|
|
|
CHECKUNIT_DIAG(ENXIO);
|
|
|
|
/*
|
|
* Do processing
|
|
*/
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
${1}read(dev_t dev, struct uio *uio, int ioflag)
|
|
{
|
|
int unit = UNIT (dev);
|
|
sc_p scp = sca[unit];
|
|
int toread;
|
|
|
|
|
|
CHECKUNIT_DIAG(ENXIO);
|
|
|
|
/*
|
|
* Do processing
|
|
* read from buffer
|
|
*/
|
|
toread = (min(uio->uio_resid, sizeof(scp->buffer)));
|
|
return(uiomove(scp->buffer, toread, uio));
|
|
}
|
|
|
|
static int
|
|
${1}write(dev_t dev, struct uio *uio, int ioflag)
|
|
{
|
|
int unit = UNIT (dev);
|
|
sc_p scp = sca[unit];
|
|
int towrite;
|
|
|
|
CHECKUNIT_DIAG(ENXIO);
|
|
|
|
/*
|
|
* Do processing
|
|
* write to buffer
|
|
*/
|
|
towrite = (min(uio->uio_resid, sizeof(scp->buffer)));
|
|
return(uiomove(scp->buffer, towrite, uio));
|
|
}
|
|
|
|
static int
|
|
${1}mmap(dev_t dev, int offset, int nprot)
|
|
{
|
|
int unit = UNIT (dev);
|
|
sc_p scp = sca[unit];
|
|
|
|
CHECKUNIT_DIAG(-1);
|
|
|
|
/*
|
|
* Do processing
|
|
*/
|
|
#if 0 /* if we had a frame buffer or whatever.. do this */
|
|
if (offset > FRAMEBUFFERSIZE - PAGE_SIZE) {
|
|
return (-1);
|
|
}
|
|
return i386_btop((FRAMEBASE + offset));
|
|
#else
|
|
return (-1);
|
|
#endif
|
|
}
|
|
|
|
static int
|
|
${1}poll(dev_t dev, int which, struct proc *p)
|
|
{
|
|
int unit = UNIT (dev);
|
|
sc_p scp = sca[unit];
|
|
|
|
CHECKUNIT_DIAG(ENXIO);
|
|
|
|
/*
|
|
* Do processing
|
|
*/
|
|
return (0); /* this is the wrong value I'm sure */
|
|
}
|
|
|
|
#ifndef ${UPPER}_MODULE
|
|
|
|
/*
|
|
* Now for some driver initialisation.
|
|
* Occurs ONCE during boot (very early).
|
|
* This is if we are NOT a loadable module.
|
|
*/
|
|
static void
|
|
${1}_drvinit(void *unused)
|
|
{
|
|
dev_t dev;
|
|
|
|
dev = makedev(CDEV_MAJOR, 0);
|
|
cdevsw_add(&dev, &${1}_cdevsw, NULL);
|
|
}
|
|
|
|
SYSINIT(${1}dev, SI_SUB_DRIVERS, SI_ORDER_MIDDLE+CDEV_MAJOR,
|
|
${1}_drvinit, NULL)
|
|
|
|
#else /* ${UPPER}_MODULE */
|
|
/* Here is the support for if we ARE a loadable kernel module */
|
|
|
|
#include <sys/exec.h>
|
|
#include <sys/sysent.h>
|
|
#include <sys/lkm.h>
|
|
|
|
MOD_DEV (${1}, LM_DT_CHAR, CDEV_MAJOR, &${1}_cdevsw);
|
|
|
|
static struct isa_device dev = {0, &${1}driver, BASE_IO, IRQ, DMA, (caddr_t) PHYS_IO, PHYS_IO_SIZE, INT_INT, 0, FLAGS, 0, 0, 0, 0, 1, 0, 0};
|
|
|
|
static int
|
|
${1}_load (struct lkm_table *lkmtp, int cmd)
|
|
{
|
|
if (${1}probe (&dev)) {
|
|
${1}attach (&dev);
|
|
uprintf ("${1} driver loaded\n");
|
|
uprintf ("${1}: interrupts not hooked\n");
|
|
return 0;
|
|
} else {
|
|
uprintf ("${1} driver: probe failed\n");
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
static int
|
|
${1}_unload (struct lkm_table *lkmtp, int cmd)
|
|
{
|
|
uprintf ("${1} driver unloaded\n");
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
${1}_stat (struct lkm_table *lkmtp, int cmd)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
${1}_mod (struct lkm_table *lkmtp, int cmd, int ver)
|
|
{
|
|
MOD_DISPATCH(${1}, lkmtp, cmd, ver,
|
|
${1}_load, ${1}_unload, ${1}_stat);
|
|
}
|
|
|
|
#endif /* ${UPPER}_MODULE */
|
|
|
|
DONE
|
|
|
|
cat >../../sys/${1}io.h <<DONE
|
|
/*
|
|
* Definitions needed to access the ${1} device (ioctls etc)
|
|
* see mtio.h , ioctl.h as examples
|
|
*/
|
|
#ifndef SYS_DHIO_H
|
|
#define SYS_DHIO_H
|
|
|
|
#ifndef KERNEL
|
|
#include <sys/types.h>
|
|
#endif
|
|
#include <sys/ioccom.h>
|
|
|
|
/*
|
|
* define an ioctl here
|
|
*/
|
|
#define DHIOCRESET _IO('D', 0) /* reset the ${1} device */
|
|
#endif
|
|
DONE
|
|
|
|
if [ -d /usr/src/lkm/${1} ]
|
|
then
|
|
cat >/usr/src/lkm/${1}/Makefile <<DONE
|
|
# ${UPPER} Loadable Kernel Module
|
|
#
|
|
# This happens not to work, actually. It's written for
|
|
# a character ISA device driver, but they cannot be
|
|
# be made into lkm's, because you have to hard code
|
|
# everything you'll otherwise enter into the kernel
|
|
# configuration file.
|
|
|
|
.PATH: \${.CURDIR}/../../sys/i386/isa
|
|
KMOD = ${1}_mod
|
|
SRCS = ${1}.c ${1}.h
|
|
|
|
CFLAGS += -I. -D${UPPER}_MODULE
|
|
CLEANFILES += ${1}.h
|
|
|
|
BASE_IO=0 # Base IO address
|
|
IRQ=0 # IRQ number
|
|
DMA=-1 # DMA channel
|
|
PHYS_IO=0 # Physical IO Memory base address
|
|
PHYS_IO_SIZE=0 # Physical IO Memory size
|
|
INT_INT=0 # Interrupt interface
|
|
FLAGS=0 # Flags
|
|
|
|
CFLAGS+= -DBASE_IO=\${BASE_IO} -DIRQ=\${IRQ} -DDMA=\${DMA} -DPHYS_IO=\${PHYS_IO} -DPHYS_IO_SIZE=\${PHYS_IO_SIZE} -DINT_INT=\${INT_INT} -DFLAGS=\${FLAGS}
|
|
|
|
${1}.h:
|
|
echo "#define N${UPPER} 1" > ${1}.h
|
|
|
|
afterinstall:
|
|
\${INSTALL} -c -o \${BINOWN} -g \${BINGRP} -m \${BINMODE} \
|
|
\${.CURDIR}/${1} \${DESTDIR}/usr/bin
|
|
|
|
.include <bsd.kmod.mk>
|
|
DONE
|
|
fi
|
|
|
|
config ${UPPER}
|
|
cd ../../compile/${UPPER}
|
|
make depend
|
|
make ${1}.o
|
|
make
|
|
exit
|
|
|
|
#--------------end of script---------------
|
|
#
|
|
#edit to your taste..
|
|
#
|
|
#
|
|
|
|
|
|
|
|
|