mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-11-28 20:11:00 +01:00
These two shell scripts will
create a skeleton device driver. one for a real device and the other for a pseudo device. they each take one argument which is the name (prefix) for the driver. they add the new file to the /sys tree and add appropriate config files etc for a build. hopefully others will build on this so that we get 1/ these drivers improved and the shell scripts improved in how/where that hook the new code in. 2/ similar tools for providing skeletons for other modules (I'm tempted to do a VFS filesystem skeleton :) please take a look and fix anything that maybe should be added. they compile and link fine, but I think I wouldn't trust them, as faar as RUNNING yet :) (well they really wouldn't do very much being skeletons.. we need to add PCI and EISA skeletons as well followed by a SCSI driver skeleton.
This commit is contained in:
julian
parent
a6c8953f94
commit
bd62efe166
400
share/examples/drivers/make_device_driver.sh
Executable file
400
share/examples/drivers/make_device_driver.sh
Executable file
@ -0,0 +1,400 @@
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#!/bin/sh
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# This writes a skeleton driver and puts it into the kernel tree for you
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#arg1 is lowercase "foo"
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#
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# Trust me, RUN THIS SCRIPT :)
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#
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#-------cut here------------------
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cd /sys/i386/conf
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if [ "${1}X" = "X" ]
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then
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echo "Hey , how about some help here.. give me a device name!"
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exit 1
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fi
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UPPER=`echo ${1} |tr "[:lower:]" "[:upper:]"`
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cat >files.${UPPER} <<DONE
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i386/isa/${1}.c optional ${1} device-driver
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DONE
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cat >${UPPER} <<DONE
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# Configuration file for kernel type: ${UPPER}
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ident ${UPPER}
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# \$Id:\$"
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DONE
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grep -v GENERIC < GENERIC >>${UPPER}
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cat >>${UPPER} <<DONE
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# trust me, you'll need this
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options DDB
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device ${1}0 at isa? port 0x234 bio irq 5 vector ${1}intr
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DONE
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cat >../isa/${1}.c <<DONE
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/*
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* Copyright ME
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*
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* ${1} driver
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* \$Id:\$
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*/
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#include "${1}.h" /* generated file.. defines N${UPPER} */
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h> /* SYSINIT stuff */
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#include <sys/conf.h> /* cdevsw stuff */
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#include <sys/malloc.h> /* malloc region definitions */
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#include <machine/clock.h> /* DELAY() */
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#include <i386/isa/isa.h> /* ISA bus port definitions etc. */
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#include <i386/isa/isa_device.h>/* ISA bus configuration structures */
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#include <sys/${1}io.h> /* ${1} IOCTL definitions */
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#ifdef DEVFS
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#include <sys/devfsext.h> /* DEVFS defintitions */
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#endif /* DEVFS */
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/* Function prototypes (these should all be static except for ${1}intr()) */
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static d_open_t ${1}open;
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static d_close_t ${1}close;
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static d_read_t ${1}read;
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static d_write_t ${1}write;
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static d_ioctl_t ${1}ioctl;
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static d_mmap_t ${1}mmap;
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static d_select_t ${1}select;
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static int ${1}probe (struct isa_device *);
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static int ${1}attach (struct isa_device *);
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/* void ${1}intr(int unit);*//* actually defined in ioconf.h (generated file) */
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#define CDEV_MAJOR 20
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static struct cdevsw ${1}_cdevsw = {
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${1}open,
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${1}close,
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${1}read,
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${1}write,
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${1}ioctl,
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nullstop,
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nullreset,
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nodevtotty,
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${1}select,
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${1}mmap,
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NULL,
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"${1}",
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NULL,
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-1 };
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struct isa_driver ${1}driver = {
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${1}probe,
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${1}attach,
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"${1}" };
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/*
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* device specific Misc defines
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*/
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#define BUFFERSIZE 1024
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#define NUMPORTS 4
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#define UNIT(dev) minor(dev) /* assume one minor number per unit */
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/*
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* One of these per allocated device
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*/
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struct ${1}_softc {
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struct isa_device *dev;
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char buffer[BUFFERSIZE];
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#ifdef DEVFS
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static void *devfs_token;
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#endif
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} ;
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typedef struct ${1}_softc *sc_p;
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static sc_p sca[N${UPPER}];
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/* add your own test to see if it exists */
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/* should return the number of ports needed */
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static int
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${1}probe (struct isa_device *dev)
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{
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char val;
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int unit = dev->id_unit;
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sc_p scp = sca[unit];
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/*
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* Check the unit makes sense.
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*/
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if (unit > N${UPPER}) {
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printf("bad unit (%d)\n", unit);
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return (0);
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}
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if (scp) {
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printf("unit $d already attached\n", unit);
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return (0);
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}
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/*
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* try see if the device is there.
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*/
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val = inb (dev->id_iobase);
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if ( val != 42 ) {
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return (0);
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}
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/*
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* ok, we got one we think
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* do some further (this time possibly destructive) tests.
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*/
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outb (dev->id_iobase, 0xff);
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DELAY (10000); /* 10 ms delay */
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val = inb (dev->id_iobase) & 0x0f;
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return ((val & 0x0f) == 0x0f)? NUMPORTS : 0 ;
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}
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/*
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* Called if the probe succeeded.
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* We can be destructive here as we know we have the device.
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* we can also trust the unit number.
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*/
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static int
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${1}attach (struct isa_device *dev)
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{
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int unit = dev->id_unit;
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sc_p scp = sca[unit];
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/*
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* Allocate storage for this instance .
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*/
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scp = malloc(sizeof(*scp), M_DEVBUF, M_NOWAIT);
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if( scp == NULL) {
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printf("${1}%d failed to allocage driver strorage\n", unit);
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return (0);
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}
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bzero(scp, sizeof(*scp));
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sca[unit] = scp;
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/*
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* Store whatever seems wise.
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*/
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scp->dev = dev;
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#if DEVFS
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scp->devfs_token = devfs_add_devswf(&${1}_cdevsw, unit, DV_CHR,
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UID_ROOT, GID_KMEM, 0600, "${1}%d", unit);
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#endif
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return 1;
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}
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/*
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* Macro to check that the unit number is valid
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* Often this isn't needed as once the open() is performed,
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* the unit number is pretty much safe.. The exception would be if we
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* implemented devices that could "go away". in which case all these routines
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* would be wise to check the number, DIAGNOSTIC or not.
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*/
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#define CHECKUNIT(RETVAL) \
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do { /* the do-while is a safe way to do this grouping */ \
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if (unit > N${UPPER}) { \
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printf(__FUNCTION__ ":bad unit $d\n", unit); \
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return (RETVAL); \
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} \
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if (scp == NULL) { \
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printf( __FUNCTION__ ": unit $d not attached\n", unit);\
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return (RETVAL); \
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} \
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} while (0)
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#ifdef DIAGNOSTIC
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#define CHECKUNIT_DIAG(RETVAL) CHECKUNIT(RETVAL)
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#else /* DIAGNOSTIC */
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#define CHECKUNIT_DIAG(RETVAL)
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#endif /* DIAGNOSTIC */
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void
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${1}intr(int unit)
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{
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sc_p scp = sca[unit];
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/*
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* well we got an interupt, now what?
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* Theoretically we don't need to check the unit.
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*/
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return;
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}
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int ${1}ioctl (dev_t dev, int cmd, caddr_t data, int flag, struct proc *p)
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{
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int unit = UNIT (dev);
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sc_p scp = sca[unit];
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CHECKUNIT_DIAG(ENXIO);
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switch (cmd) {
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case DHIOCRESET:
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/* whatever resets it */
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outb(scp->dev->id_iobase, 0xff);
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break;
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default:
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return ENXIO;
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}
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return (0);
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}
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/*
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* You also need read, write, open, close routines.
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* This should get you started
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*/
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static int
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${1}open(dev_t dev, int oflags, int devtype, struct proc *p)
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{
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int unit = UNIT (dev);
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sc_p scp = sca[unit];
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CHECKUNIT(ENXIO);
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/*
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* Do processing
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*/
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return (0);
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}
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static int
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${1}close(dev_t dev, int fflag, int devtype, struct proc *p)
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{
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int unit = UNIT (dev);
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sc_p scp = sca[unit];
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CHECKUNIT_DIAG(ENXIO);
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/*
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* Do processing
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*/
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return (0);
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}
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static int
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${1}read(dev_t dev, struct uio *uio, int ioflag)
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{
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int unit = UNIT (dev);
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sc_p scp = sca[unit];
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int toread;
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CHECKUNIT_DIAG(ENXIO);
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/*
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* Do processing
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* read from buffer
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*/
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toread = (min(uio->uio_resid, sizeof(scp->buffer)));
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return(uiomove(scp->buffer, toread, uio));
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}
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static int
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${1}write(dev_t dev, struct uio *uio, int ioflag)
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{
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int unit = UNIT (dev);
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sc_p scp = sca[unit];
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int towrite;
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CHECKUNIT_DIAG(ENXIO);
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/*
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* Do processing
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* write to buffer
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*/
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towrite = (min(uio->uio_resid, sizeof(scp->buffer)));
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return(uiomove(scp->buffer, towrite, uio));
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}
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static int
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${1}mmap(dev_t dev, int offset, int nprot)
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{
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int unit = UNIT (dev);
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sc_p scp = sca[unit];
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CHECKUNIT_DIAG(-1);
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/*
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* Do processing
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*/
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#if 0 /* if we had a frame buffer or whatever.. do this */
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if (offset > FRAMEBUFFERSIZE - PAGE_SIZE) {
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return (-1);
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}
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return i386_btop((FRAMEBASE + offset));
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#else
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return (-1);
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#endif
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}
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static int
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${1}select(dev_t dev, int which, struct proc *p)
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{
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int unit = UNIT (dev);
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sc_p scp = sca[unit];
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CHECKUNIT_DIAG(ENXIO);
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/*
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* Do processing
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*/
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return (0); /* this is the wrong value I'm sure */
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}
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/*
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* Now for some driver initialisation.
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* Occurs ONCE during boot (very early).
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*/
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static void
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${1}_drvinit(void *unused)
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{
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dev_t dev;
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dev = makedev(CDEV_MAJOR, 0);
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cdevsw_add(&dev, &${1}_cdevsw, NULL);
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}
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SYSINIT(${1}dev, SI_SUB_DRIVERS, SI_ORDER_MIDDLE+CDEV_MAJOR,
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${1}_drvinit, NULL)
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DONE
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cat >../../sys/${1}io.h <<DONE
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/*
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* Definitions needed to access the ${1} device (ioctls etc)
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* see mtio.h , ioctl.h as examples
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*/
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#ifndef SYS_DHIO_H
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#define SYS_DHIO_H
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#ifndef KERNEL
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#include <sys/types.h>
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#endif
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#include <sys/ioccom.h>
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|
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/*
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* define an ioctl here
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*/
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#define DHIOCRESET _IO('D', 0) /* reset the ${1} device */
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#endif
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DONE
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config ${UPPER}
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cd ../../compile/${UPPER}
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make depend
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make ${1}.o
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make
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exit
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|
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#--------------end of script---------------
|
||||
#
|
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#you also need to add an entry into the cdevsw[]
|
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#array in conf.c, but it's too hard to do in a script..
|
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#
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#edit to your taste..
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||||
#
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#
|
||||
|
||||
|
||||
|
||||
|
||||
321
share/examples/drivers/make_pseudo_driver.sh
Normal file
321
share/examples/drivers/make_pseudo_driver.sh
Normal file
@ -0,0 +1,321 @@
|
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#!/bin/sh
|
||||
# This writes a skeleton driver and puts it into the kernel tree for you
|
||||
#arg1 is lowercase "foo"
|
||||
#
|
||||
# Trust me, RUN THIS SCRIPT :)
|
||||
#
|
||||
#-------cut here------------------
|
||||
cd /sys/i386/conf
|
||||
|
||||
if [ "${1}X" = "X" ]
|
||||
then
|
||||
echo "Hey , how about some help here.. give me a device name!"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
UPPER=`echo ${1} |tr "[:lower:]" "[:upper:]"`
|
||||
cat >files.${UPPER} <<DONE
|
||||
dev/${1}.c optional ${1} device-driver
|
||||
DONE
|
||||
|
||||
cat >${UPPER} <<DONE
|
||||
# Configuration file for kernel type: ${UPPER}
|
||||
ident ${UPPER}
|
||||
# \$Id:\$"
|
||||
DONE
|
||||
|
||||
grep -v GENERIC < GENERIC >>${UPPER}
|
||||
|
||||
cat >>${UPPER} <<DONE
|
||||
# trust me, you'll need this
|
||||
options DDB
|
||||
pseudo-device ${1} 4 # might as well allow 4 of them
|
||||
DONE
|
||||
|
||||
cat >../../dev/${1}.c <<DONE
|
||||
/*
|
||||
* Copyright ME
|
||||
*
|
||||
* ${1} driver
|
||||
* \$Id:\$
|
||||
*/
|
||||
|
||||
|
||||
#include "${1}.h" /* generated file.. defines N${UPPER} */
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
#include <sys/kernel.h> /* SYSINIT stuff */
|
||||
#include <sys/conf.h> /* cdevsw stuff */
|
||||
#include <sys/malloc.h> /* malloc region definitions */
|
||||
#include <machine/clock.h> /* DELAY() */
|
||||
#include <sys/${1}io.h> /* ${1} IOCTL definitions */
|
||||
#ifdef DEVFS
|
||||
#include <sys/devfsext.h> /* DEVFS defintitions */
|
||||
#endif /* DEVFS */
|
||||
|
||||
|
||||
|
||||
/* Function prototypes (these should all be static except for ${1}intr()) */
|
||||
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_select_t ${1}select;
|
||||
|
||||
#define CDEV_MAJOR 20
|
||||
static struct cdevsw ${1}_cdevsw = {
|
||||
${1}open,
|
||||
${1}close,
|
||||
${1}read,
|
||||
${1}write,
|
||||
${1}ioctl,
|
||||
nullstop,
|
||||
nullreset,
|
||||
nodevtotty,
|
||||
${1}select,
|
||||
${1}mmap,
|
||||
NULL,
|
||||
"${1}",
|
||||
NULL,
|
||||
-1 };
|
||||
|
||||
/*
|
||||
* device specific Misc defines
|
||||
*/
|
||||
#define BUFFERSIZE 1024
|
||||
#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}];
|
||||
|
||||
/*
|
||||
* 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 */
|
||||
|
||||
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}select(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 */
|
||||
}
|
||||
|
||||
/*
|
||||
* Now for some driver initialisation.
|
||||
* Occurs ONCE during boot (very early).
|
||||
*/
|
||||
static void
|
||||
${1}_drvinit(void *unused)
|
||||
{
|
||||
dev_t dev;
|
||||
int unit;
|
||||
sc_p scp = sca[unit];
|
||||
|
||||
dev = makedev(CDEV_MAJOR, 0);
|
||||
cdevsw_add(&dev, &${1}_cdevsw, NULL);
|
||||
for (unit = 0; unit < N${UPPER}; unit++) {
|
||||
/*
|
||||
* Allocate storage for this instance .
|
||||
*/
|
||||
scp = malloc(sizeof(*scp), M_DEVBUF, M_NOWAIT);
|
||||
if( scp == NULL) {
|
||||
printf("${1}%d failed to allocate strorage\n", unit);
|
||||
return ;
|
||||
}
|
||||
bzero(scp, sizeof(*scp));
|
||||
sca[unit] = scp;
|
||||
#if DEVFS
|
||||
scp->devfs_token = devfs_add_devswf(&${1}_cdevsw, unit, DV_CHR,
|
||||
UID_ROOT, GID_KMEM, 0640, "${1}%d", unit);
|
||||
#endif
|
||||
}
|
||||
}
|
||||
|
||||
SYSINIT(${1}dev, SI_SUB_DRIVERS, SI_ORDER_MIDDLE+CDEV_MAJOR,
|
||||
${1}_drvinit, NULL)
|
||||
|
||||
|
||||
DONE
|
||||
|
||||
cat >../../sys/${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
|
||||
|
||||
config ${UPPER}
|
||||
cd ../../compile/${UPPER}
|
||||
make depend
|
||||
make ${1}.o
|
||||
make
|
||||
exit
|
||||
|
||||
#--------------end of script---------------
|
||||
#
|
||||
#you also need to add an entry into the cdevsw[]
|
||||
#array in conf.c, but it's too hard to do in a script..
|
||||
#
|
||||
#edit to your taste..
|
||||
#
|
||||
#
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user