/*
?*?My?UDisk?driver?-?0.1
?*
?*?TODO:
?*	-?fix?urb->status?race?condition?in?write?sequence
?*	-?move?minor_table?to?a?dynamic?list.
?*
?*?History:
?*
?*?2008_01_9?-?0.1?-?zero?out?dev?in?probe?function?for?devices?that?do
?*?
?*/
#define?__KERNEL__
#define?MODULE
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#define?MAJOR_NR		42		//?定義主設備號
#define?DEVICE_NAME		“myudisk“		//?定義設備名
#define?DEVICE_NR（device）	（MINOR（device））		
#define?DEVICE_ON（device）
#define?DEVICE_OFF（device）
#define?DEVICE_NO_RANDOM
#include?
#define?MYUDISK_SECTOR_BITS	9	/*?2**9?byte?hardware?sector?*/
#define?MYUDISK_BLOCK_SIZE	1024	/*?block?size?*/	//定義了一個塊的大小，以字節為單位
#define?MYUDISK_TOTAL_SIZE	2048	/*?size?in?blocks?*/	//定義了這個虛擬盤的容量，以塊為單位

/*?the?storage?pool?*/
//static?char?*myudisk_storage;		//這個指針是全局變量，指向用于虛擬盤的內存

static?int?myudisk_sectorsize?=?1?<static?int?myudisk_blocksize?=?MYUDISK_BLOCK_SIZE;
static?int?myudisk_size?;
static?int?myudisk_readahead?=?4;
#define?CONFIG_USB_DEBUG

#ifdef?CONFIG_USB_DEBUG
	static?int?debug?=?1;
#else
	static?int?debug;
#endif

/*?Use?our?own?dbg?macro?*/
#undef?dbg
#define?dbg（format?arg...）?do?{?if?（debug）?printk（KERN_DEBUG?__FILE__?“（%s）:?“?format?“\n“??__FUNCTION__?##?arg）;?}?while?（0）

/*?Version?Information?*/
#define?DRIVER_VERSION?“v0.1“
#define?DRIVER_AUTHOR?“Wen?Yan?Jun?yjwen@nudt.edu.cn“
#define?DRIVER_DESC?“My?UDisk?Driver“

/*?Module?paramaters?*/
MODULE_PARM（debug?“i“）;
MODULE_PARM_DESC（debug?“Debug?enabled?or?not“）;

/*?Define?these?values?to?match?your?device?*/
#define?MY_UDISK_VENDOR_ID	0x58f
#define?MY_UDISK_PRODUCT_ID	0x9380

/*?table?of?devices?that?work?with?this?driver?*/
/*當usb設備插入時，為了使linux系統自動裝載驅動程序，需要創建一個MODULE_DEVICE_TABLE，這個模塊僅支持某一特定設備*/
static?struct?usb_device_id?myudisk_table?[]?=?{
	{?USB_DEVICE（MY_UDISK_VENDOR_ID?MY_UDISK_PRODUCT_ID）?}
	{?}					/*?Terminating?entry?*/
};

MODULE_DEVICE_TABLE?（usb?myudisk_table）;

/*?Get?a?minor?range?for?your?devices?from?the?usb?maintainer?*/
#define?MY_UDISK_MINOR_base	192	

/*?we?can?have?up?to?this?number?of?device?plugged?in?at?once?*/
#define?MAX_DEVICES		16


/*?Structure?to?hold?all?of?our?device?specific?stuff?*/
struct?my_udisk?{
	struct?usb_device?*	udev;			/*?保存usb設備指針?*/
	struct?usb_interface?*	interface;		/*?usb所插入接口指針?*/
	devfs_handle_t		devfs;			/*?devfs?device?node?*/
	unsigned?char		minor;			/*?the?starting?minor?number?for?this?device?*/
	unsigned?char		num_ports;		/*?the?number?of?ports?this?device?has?*/
	char			num_interrupt_in;	/*?number?of?interrupt?in?endpoints?we?have?*/

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????288??2007-12-28?01:47??Udisk\Makefile

?????文件??????45390??2009-07-17?09:59??Udisk\myudisk.c

?????文件??????31413??2005-12-23?18:47??Udisk\myudisk.o

?????目錄??????????0??2009-07-18?15:43??Udisk

-----------?---------??----------?-----??----

????????????????77091????????????????????4