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-rw-r--r--vidix/dhahelper/dhahelper.c377
1 files changed, 0 insertions, 377 deletions
diff --git a/vidix/dhahelper/dhahelper.c b/vidix/dhahelper/dhahelper.c
deleted file mode 100644
index a187388ef3..0000000000
--- a/vidix/dhahelper/dhahelper.c
+++ /dev/null
@@ -1,377 +0,0 @@
-/*
- * Direct Hardware Access (DHA) kernel helper
- *
- * Copyright (C) 2002 Alex Beregszaszi <alex@fsn.hu>
- *
- * This file is part of MPlayer.
- *
- * MPlayer is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * MPlayer is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with MPlayer; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-/*
- Accessing hardware from userspace as USER (no root needed!)
-
- Tested on 2.2.x (2.2.19) and 2.4.x (2.4.3,2.4.17).
-
- WARNING! THIS MODULE VIOLATES SEVERAL SECURITY LINES! DON'T USE IT
- ON PRODUCTION SYSTEMS, ONLY AT HOME, ON A "SINGLE-USER" SYSTEM.
- NO WARRANTY!
-
- Tech:
- Communication between userspace and kernelspace goes over character
- device using ioctl.
-
- Usage:
- mknod -m 666 /dev/dhahelper c 180 0
-
- Also you can change the major number, setting the "dhahelper_major"
- module parameter, the default is 180, specified in dhahelper.h.
-
- Note: do not use other than minor==0, the module forbids it.
-
- TODO:
- * do memory mapping without fops:mmap
- * implement unmap memory
- * select (request?) a "valid" major number (from Linux project? ;)
- * make security
- * is pci handling needed? (libdha does this with lowlevel port funcs)
- * is mttr handling needed?
- * test on older kernels (2.0.x (?))
-*/
-
-#ifndef MODULE
-#define MODULE
-#endif
-
-#ifndef __KERNEL__
-#define __KERNEL__
-#endif
-
-#include <linux/config.h>
-
-#ifdef CONFIG_MODVERSION
-#define MODVERSION
-#include <linux/modversions.h>
-#endif
-
-#include <linux/version.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,10)
-#include <linux/malloc.h>
-#else
-#include <linux/slab.h>
-#endif
-
-#include <linux/pci.h>
-#include <linux/ioport.h>
-#include <linux/init.h>
-
-#include <asm/uaccess.h>
-#include <asm/system.h>
-#include <asm/io.h>
-
-#include <linux/mman.h>
-
-#include <linux/fs.h>
-#include <linux/unistd.h>
-
-#include "dhahelper.h"
-
-MODULE_AUTHOR("Alex Beregszaszi <alex@fsn.hu>");
-MODULE_DESCRIPTION("Provides userspace access to hardware (security violation!)");
-#ifdef MODULE_LICENSE
-MODULE_LICENSE("GPL");
-#endif
-
-static int dhahelper_major = DEFAULT_MAJOR;
-MODULE_PARM(dhahelper_major, "i");
-MODULE_PARM_DESC(dhahelper_major, "Major number of dhahelper characterdevice");
-
-/* 0 = silent */
-/* 1 = report errors (default) */
-/* 2 = debug */
-static int dhahelper_verbosity = 1;
-MODULE_PARM(dhahelper_verbosity, "i");
-MODULE_PARM_DESC(dhahelper_verbosity, "Level of verbosity (0 = silent, 1 = only errors, 2 = debug)");
-
-static dhahelper_memory_t last_mem_request;
-
-
-static int dhahelper_open(struct inode *inode, struct file *file)
-{
- if (dhahelper_verbosity > 1)
- printk(KERN_DEBUG "dhahelper: device opened\n");
-
- if (MINOR(inode->i_rdev) != 0)
- return -ENXIO;
-
- MOD_INC_USE_COUNT;
-
- return 0;
-}
-
-static int dhahelper_release(struct inode *inode, struct file *file)
-{
- if (dhahelper_verbosity > 1)
- printk(KERN_DEBUG "dhahelper: device released\n");
-
- if (MINOR(inode->i_rdev) != 0)
- return -ENXIO;
-
- MOD_DEC_USE_COUNT;
-
- return 0;
-}
-
-static int dhahelper_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- if (dhahelper_verbosity > 1)
- printk(KERN_DEBUG "dhahelper: ioctl(cmd=%x, arg=%lx)\n",
- cmd, arg);
-
- if (MINOR(inode->i_rdev) != 0)
- return -ENXIO;
-
- switch(cmd)
- {
- case DHAHELPER_GET_VERSION:
- {
- int version = API_VERSION;
-
- if (copy_to_user((int *)arg, &version, sizeof(int)))
- {
- if (dhahelper_verbosity > 0)
- printk(KERN_ERR "dhahelper: failed copy to userspace\n");
- return -EFAULT;
- }
-
- break;
- }
- case DHAHELPER_PORT:
- {
- dhahelper_port_t port;
-
- if (copy_from_user(&port, (dhahelper_port_t *)arg, sizeof(dhahelper_port_t)))
- {
- if (dhahelper_verbosity > 0)
- printk(KERN_ERR "dhahelper: failed copy from userspace\n");
- return -EFAULT;
- }
-
- switch(port.operation)
- {
- case PORT_OP_READ:
- {
- switch(port.size)
- {
- case 1:
- port.value = inb(port.addr);
- break;
- case 2:
- port.value = inw(port.addr);
- break;
- case 4:
- port.value = inl(port.addr);
- break;
- default:
- if (dhahelper_verbosity > 0)
- printk(KERN_ERR "dhahelper: invalid port read size (%d)\n",
- port.size);
- return -EINVAL;
- }
- break;
- }
- case PORT_OP_WRITE:
- {
- switch(port.size)
- {
- case 1:
- outb(port.value, port.addr);
- break;
- case 2:
- outw(port.value, port.addr);
- break;
- case 4:
- outl(port.value, port.addr);
- break;
- default:
- if (dhahelper_verbosity > 0)
- printk(KERN_ERR "dhahelper: invalid port write size (%d)\n",
- port.size);
- return -EINVAL;
- }
- break;
- }
- default:
- if (dhahelper_verbosity > 0)
- printk(KERN_ERR "dhahelper: invalid port operation (%d)\n",
- port.operation);
- return -EINVAL;
- }
-
- /* copy back only if read was performed */
- if (port.operation == PORT_OP_READ)
- if (copy_to_user((dhahelper_port_t *)arg, &port, sizeof(dhahelper_port_t)))
- {
- if (dhahelper_verbosity > 0)
- printk(KERN_ERR "dhahelper: failed copy to userspace\n");
- return -EFAULT;
- }
-
- break;
- }
- case DHAHELPER_MEMORY:
- {
- dhahelper_memory_t mem;
-
- if (copy_from_user(&mem, (dhahelper_memory_t *)arg, sizeof(dhahelper_memory_t)))
- {
- if (dhahelper_verbosity > 0)
- printk(KERN_ERR "dhahelper: failed copy from userspace\n");
- return -EFAULT;
- }
-
- switch(mem.operation)
- {
- case MEMORY_OP_MAP:
- {
-#if 1
- memcpy(&last_mem_request, &mem, sizeof(dhahelper_memory_t));
-#else
- mem.ret = do_mmap(file, mem.start, mem.size, PROT_READ|PROT_WRITE,
- MAP_SHARED, mem.offset);
-#endif
-
- break;
- }
- case MEMORY_OP_UNMAP:
- break;
- default:
- if (dhahelper_verbosity > 0)
- printk(KERN_ERR "dhahelper: invalid memory operation (%d)\n",
- mem.operation);
- return -EINVAL;
- }
-
- if (copy_to_user((dhahelper_memory_t *)arg, &mem, sizeof(dhahelper_memory_t)))
- {
- if (dhahelper_verbosity > 0)
- printk(KERN_ERR "dhahelper: failed copy to userspace\n");
- return -EFAULT;
- }
-
- break;
- }
- default:
- if (dhahelper_verbosity > 0)
- printk(KERN_ERR "dhahelper: invalid ioctl (%x)\n", cmd);
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int dhahelper_mmap(struct file *file, struct vm_area_struct *vma)
-{
- if (last_mem_request.operation != MEMORY_OP_MAP)
- {
- if (dhahelper_verbosity > 0)
- printk(KERN_ERR "dhahelper: mapping not requested before mmap\n");
- return -EFAULT;
- }
-
- if (dhahelper_verbosity > 1)
- printk(KERN_INFO "dhahelper: mapping %x (size: %x)\n",
- last_mem_request.start+last_mem_request.offset, last_mem_request.size);
-
- if (remap_page_range(0, last_mem_request.start + last_mem_request.offset,
- last_mem_request.size, vma->vm_page_prot))
- {
- if (dhahelper_verbosity > 0)
- printk(KERN_ERR "dhahelper: error mapping memory\n");
- return -EFAULT;
- }
-
- return 0;
-}
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0)
-static struct file_operations dhahelper_fops =
-{
- /*llseek*/ NULL,
- /*read*/ NULL,
- /*write*/ NULL,
- /*readdir*/ NULL,
- /*poll*/ NULL,
- /*ioctl*/ dhahelper_ioctl,
- /*mmap*/ dhahelper_mmap,
- /*open*/ dhahelper_open,
- /*flush*/ NULL,
- /*release*/ dhahelper_release,
- /* zero out the last 5 entries too ? */
-};
-#else
-static struct file_operations dhahelper_fops =
-{
- owner: THIS_MODULE,
- ioctl: dhahelper_ioctl,
- mmap: dhahelper_mmap,
- open: dhahelper_open,
- release: dhahelper_release
-};
-#endif
-
-#if KERNEL_VERSION < KERNEL_VERSION(2,4,0)
-int init_module(void)
-#else
-static int __init init_dhahelper(void)
-#endif
-{
- printk(KERN_INFO "Direct Hardware Access kernel helper (C) Alex Beregszaszi\n");
-
- if(register_chrdev(dhahelper_major, "dhahelper", &dhahelper_fops))
- {
- if (dhahelper_verbosity > 0)
- printk(KERN_ERR "dhahelper: unable to register character device (major: %d)\n",
- dhahelper_major);
- return -EIO;
- }
-
- return 0;
-}
-
-#if KERNEL_VERSION < KERNEL_VERSION(2,4,0)
-void cleanup_module(void)
-#else
-static void __exit exit_dhahelper(void)
-#endif
-{
- unregister_chrdev(dhahelper_major, "dhahelper");
-}
-
-EXPORT_NO_SYMBOLS;
-
-#if KERNEL_VERSION >= KERNEL_VERSION(2,4,0)
-module_init(init_dhahelper);
-module_exit(exit_dhahelper);
-#endif
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