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Altera_Forum's avatar
Altera_Forum
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20 years ago

Byteblaster driver for Linux 2.6

Has anyone successfully ported the ByteblasterII device driver to the version 2.6 kernel ?

Would appreciate any info on how this can be achieved.

I have managed to generate the byteblaster.ko file but find that insmod fails with the following error:

error inserting 'byteblaster.ko': -1 device or resource busy

This error is returned by devfs_register_chrdev but I'm not sure why this would occur, no other devices are connected to the port. Any suggestions ?

thanks

2 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    20 years ago

    Here is a patch for byteblaster on 2.6:

    diff -urN byteblaster.orig/byteblaster.c byteblaster/byteblaster.c

    --- byteblaster.orig/byteblaster.c 2004-11-30 12:11:14.000000000 +0100

    +++ byteblaster/byteblaster.c 2005-02-09 12:10:24.000000000 +0100

    @@ -66,6 +66,7 @@

    # include <linux/module.h>

    # include <linux/kernel.h>

    # include <linux/devfs_fs_kernel.h>

    +#include <linux/fs.h>

    # include <linux/slab.h>

    # include <linux/smp_lock.h>

    # include <linux/sched.h>

    @@ -88,7 +89,7 @@

    struct byteblaster_t {

    struct pardevice * dev;

    unsigned long flags;

    - devfs_handle_t devfs_handle;

    + dev_t devfs_handle;

    struct semaphore port_mutex;

    char * read_fifo;

    @@ -419,10 +420,10 @@

    return;

    sprintf (name, "byteblaster%d", i);

    - byteblaster.devfs_handle = devfs_register (null, name,

    - devfs_fl_default, byteblaster_major, i,

    - s_ifchr | s_irugo | s_iwugo,

    - &byteblaster_fops, null);

    + byteblaster.devfs_handle = NULL; //devfs_register (NULL, name,

    +// DEVFS_FL_DEFAULT, byteblaster_major, i,

    +// S_IFCHR | S_IRUGO | S_IWUGO,

    +// &byteblaster_fops, NULL);

    printk(KERN_INFO "byteblaster%d: using %s.\n", i, port->name);

    @@ -441,7 +442,7 @@

    if (byteblaster.dev != null && byteblaster.dev->port == port) {

    parport_unregister_device(byteblaster.dev);

    - devfs_unregister(byteblaster.devfs_handle);

    + //devfs_unregister(byteblaster.devfs_handle);

    byteblaster.dev = NULL;

    byteblaster.devfs_handle = null;

    @@ -468,7 +469,7 @@

    byteblaster.read_fifo = NULL;

    }

    - err = devfs_register_chrdev(byteblaster_major, "byteblaster", &byteblaster_fops);

    + err = register_chrdev(byteblaster_major, "byteblaster", &byteblaster_fops);

    if (err < 0)

    return err;

    @@ -488,12 +489,12 @@

    parport_unregister_driver (&byteblaster_driver);

    - devfs_unregister_chrdev(byteblaster_major, "byteblaster");

    + unregister_chrdev(byteblaster_major, "byteblaster");

    for (i = 0 ; i < BYTEBLASTER_MAX ; i++)

    if (byteblaster.dev != null) {

    parport_unregister_device(byteblaster.dev);

    - devfs_unregister(byteblaster.devfs_handle);

    + //devfs_unregister(byteblaster.devfs_handle);

    }

    }

    diff -urN byteblaster.orig/Makefile byteblaster/Makefile

    --- byteblaster.orig/Makefile 2004-11-30 12:11:14.000000000 +0100

    +++ byteblaster/Makefile 2005-02-09 14:42:16.222653771 +0100

    @@ -15,25 +15,38 @@

    # This is the default location of the

    # VER = $(shell uname -r)

    # INCLUDEDIR=/lib/modules/$(VER)/build/include

    -include .config.make

    +#include .config.make

    -CFLAGS= -D__KERNEL__ -DMODULE -D__SMP__ -O3 -Wall -I$(INCLUDEDIR)

    +#CFLAGS= -D__KERNEL__ -DMODULE -D__SMP__ -O3 -Wall -I$(INCLUDEDIR)

    # Comment out the next line if you don&#39;t want kernel symbol versioning.

    -CFLAGS += -DMODVERSIONS -include $(INCLUDEDIR)/linux/modversions.h

    +#CFLAGS += -DMODVERSIONS -include $(INCLUDEDIR)/linux/modversions.h

    -OBJS = byteblaster.o

    +#OBJS = byteblaster.o

    -byteblaster.o : byteblaster.c Makefile

    +ifneq ($(KERNELRELEASE),)

    + obj-m := byteblaster.o

    -install: byteblaster.o jtagd-init

    +else

    + VER := $(shell uname -r)

    + KDIR := /lib/modules/$(VER)/build

    + PWD := $(shell pwd)

    +

    +default:

    + $(MAKE) -C $(KDIR) SUBDIRS=$(PWD) modules

    +endif

    +

    +

    +#byteblaster.o : byteblaster.c Makefile

    +

    +install: byteblaster.ko jtagd-init

    install -d /lib/modules/$(VER)/kernel/misc/

    - install -c byteblaster.o /lib/modules/$(VER)/kernel/misc/byteblaster.o

    + install -c byteblaster.ko /lib/modules/$(VER)/kernel/misc/byteblaster.ko

    install -c jtagd-init /etc/rc.d/init.d/jtagd

    /sbin/chkconfig --add jtagd

    /sbin/depmod -aq

    /etc/rc.d/init.d/jtagd start

    clean:

    - rm *.o

    -

    + rm -f *.ko *.o .*.cmd byteblaster.mod.c

    + rm -rf .tmp_versions