usb.c

一个linux下的usb接口源代码

/************************************************************
文档类型: 原代码 
项目编号: 
文档编号: 
修订版本: v1.0
生成日期: 2001.8.15
文档作者: 何雄伦
审    核: 
************************************************************
相关文档: ucdimm上的键盘连接
 
文档编号      说明 

************************************************************
修订说明

修订版本	v1.1	修订说明 重写了select函数

************************************************************/

/*#include <linux/kernel.h>
#include <asm/MC68VZ328.h>
#include <asm/segment.h>
#include <linux/types.h>
#include <linux/fs.h>
#include <linux/mm.h>
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/tqueue.h>
#include <linux/interrupt.h>
#include "usb.h"*/
#include "DataType.h"

CONTROL_XFER 	ControlData;
EPPFLAGS	bEPPflags;
D12FLAGS	bD12flags;

UCHAR Allbuffer[0x10000L];

unsigned 	long Buffer_Length;
unsigned 	char* Buffer_Pointer;
unsigned 	char Id;

UCHAR CBWBuf[31];
UCHAR CSWBuf[13];
/*
unsigned int usb_major = 94;

static int usb_read(struct inode *node, struct file *fp,
		    short *buf, int count)
{
//	printk("usb driver read was called\n");
	return 0;	
}

static int usb_open(struct inode *node, struct file *fp)
{
//	printk("usb driver open was called\n");
	return 0;
}

static void usb_close(struct inode *node, struct file *fp)
{
//		printk("usb driver close was called\n");
}

static int usb_write(struct inode *node, struct file *fp,
		    const char *buf, int count)
{
//	printk("usb driver write was called\n");
	return 0;
}

static int usb_ioctl(struct inode * inode, struct file * filp, unsigned int cmd, unsigned long arg)
{
	if (cmd == 0x0A)
	{
		Usb_Main();
	}
	return 0;
}

struct file_operations usb_fops = 
{
	NULL,
	usb_read,
	usb_write,
	NULL,
	NULL,
	usb_ioctl,
	NULL,
	usb_open,
	usb_close,
	NULL,
	NULL,
	NULL,
	NULL
};
*/

/************************************************************
函数原型: void init_mykey()
功    能: Do all the initialize work,include registe device,
	 initialize the SPI,request interrupt.
输入参数: No input argument.
返 回 值: No return value.
************************************************************/
/*void InitUSB()
{
	int result;
	result = register_chrdev(usb_major, "USB", &usb_fops);
	if (result<0)
	{
		printk("USB: can't get major number\n");
		return;
	}

	//requset USB Interrupt IRQ3
	if (request_irq(18|0x10000000, usb_isr, SA_SHIRQ,
		"USBhandler", NULL))
	{
		printk("USB Cannot request irq\n");
	}

	//Init USB hardware
	usb_initialize();
	printk("initialize usb hardware complate\n");
}
*/