usb.rar_USB驱动_linux usb_linux usb 驱动

/*------------------------------------------------------------------------ . ev44b0_usb.c . . This is a USB driver for Philips's PDIUSBD12 single-chip USB device. . . (C) Copyright 2003 . MICETEK International Inc., Shanghai China . Qin Wei <[email protected]> . . . This program 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. . . This program 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 this program; if not, write to the Free Software . Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA . . . author: . Qin Wei ( [email protected] ) . History: . 01/14/03 Qin Wei ----------------------------------------------------------------------------*/ #include <linux/module.h> #include <linux/types.h> #include <linux/wait.h> #include <linux/fs.h> #include <linux/sched.h> #include <linux/poll.h> #include <linux/miscdevice.h> #include <linux/init.h> #include <linux/compiler.h> #include <linux/interrupt.h> #include <asm/io.h> #include <asm/uaccess.h> #include <asm/irq.h> #include <asm/hardware.h> #include "ev44b0_usb.h" #define EV44B0II_USB_MODULE_NAME "usb" #define USB_BULK_MAJOR 0x55 static const char usb_driver_version[] = "EV44B0II USB driver v1.0 (2003-01-09) Qinwei, MICETEK Shanghai"; #define CONFIG_USBD12_BASE 0x4000000 #define verbose 0 #define Usb_Base_Address CONFIG_USBD12_BASE static char *usb_bulk_id = "ev44b0ii usb"; static volatile char USB_CONNECT_FLAG = 0; #define MAXUSBBUFFERLEN 1024 static unsigned char gbuffer[MAXUSBBUFFERLEN]; static unsigned char controlbuffer0[64]; struct ev44b0ii_usb_priv gusb; //**************************************************************************** // // This structure defines the setup packet received from the host via the // control out endpoint. This sturcture is padded at the end to the maximum // control endpoint transfer size. // //**************************************************************************** typedef struct { unsigned char bmRequestType; unsigned char bRequest; unsigned short wValue; unsigned short wIndex; unsigned short wLength; } ControlTransfer; //**************************************************************************** // // The following structure contains the persistent state of the USB interface. // //**************************************************************************** static struct { // The currently selected USB configuration. unsigned long ulConfiguration; // The buffer of data that is being sent to the control endpoint. const unsigned char *pucControlIn; // The number of bytes to be sent to the control endpoint. unsigned long ulControlInCount; // The buffer of data that is being received from the control endpoint. ControlTransfer sControlOut; // The buffer of data that is being sent to the bulk endpoint. const unsigned char *pucBulkIn; // The number of bytes to be sent to the bulk endpoint. unsigned long ulBulkInCount; // The buffer of data that is being received from the bulk endpoint. unsigned char *pucBulkOut; // The number of bytes still to be read from the bulk endpoint. unsigned long ulBulkOutCount; const unsigned char *pucACKIn; unsigned long ulACKInCount; unsigned char *pucCommandOut; unsigned long ulCommandOutCount; } sUSB; //**************************************************************************** // // This is the configuration descriptor for the digital audio player. See the // USB specification for the definition of this descriptor. // //**************************************************************************** static const unsigned char ucDeviceDescriptor[] = { 0x12, // bLength 0x01, // bDescriptorType 0x00, 0x01, // bcdUSB 0x00, // bDeviceClass 0x00, // bDeviceSubClass 0x00, // bDeviceProtocol 0x10, // bMaxPacketSize0 0x5e, 0x04, // idVendor 0x0a, 0x93, // idProduct 0x00, 0x01, // bcdDevice 0x01, // iManufacturer 0x02, // iProduct 0x00, // iSerial Number 0x01 // bNumConfigurations }; //**************************************************************************** // // This is the configuration descriptor for the digital audio player. See the // USB specification for the definition of this descriptor. // //**************************************************************************** static const unsigned char ucConfigurationDescriptor[] = { // // The configuration descriptor structure. // 0x09, // bLength 0x02, // bDescriptorType 0x20, // wTotalLength 0x00, // bCorrection 0x01, // bNumInterfaces 0x01, // bConfigurationValue 0x00, // iConfiguration 0x40, // bmAttributes 0x00, // MaxPower // // The interface descriptor structure. // 0x09, // bLength 0x04, // bDescriptorType 0x00, // bInterfaceNumber 0x00, // bAlternateSetting 0x02, // bNumEndpoints 0x00, // bInterfaceClass 0x00, // bInterfaceSubClass 0x00, // bInterfaceProtocol 0x00, // iInterface // // The endpoint descriptor structure. // 0x07, // bLength 0x05, // bDescriptorType 0x82, // bEndpointAddress 0x02, // bmAttributes 0x40, 0x00, // wMaxPacketSize 0x00, // bInterval // // The endpoint descriptor structure. // 0x07, // bLength 0x05, // bDescriptorType 0x02, // bEndpointAddress 0x02, // bmAttributes 0x40, 0x00, // wMaxPacketSize 0x00 // bInterval }; //**************************************************************************** // // String descriptor 0 for the digital audio player. This defines the // languages supported by the string descriptors. See the USB specification // for the definition of this descriptor. // //**************************************************************************** static const unsigned char ucString0[] = { 0x04, // bLength 0x03, // bDescriptorType 0x09, 0x04 // wLANGID[0] -> US English }; //**************************************************************************** // // String descriptor 1 for the digital audio player. This defines the //