#ifndef __USB_H__
#define __USB_H__


#define USB_MAXPATH						IPC_MAXPATH_LEN

#define USB_OK							0
#define USB_FAILED						1

/* Descriptor types */
#define USB_DT_DEVICE					0x01
#define USB_DT_CONFIG					0x02
#define USB_DT_STRING					0x03
#define USB_DT_INTERFACE				0x04
#define USB_DT_ENDPOINT					0x05

/* Standard requests */
#define USB_REQ_GETSTATUS				0x00
#define USB_REQ_CLEARFEATURE			0x01
#define USB_REQ_SETFEATURE				0x03
#define USB_REQ_SETADDRESS				0x05
#define USB_REQ_GETDESCRIPTOR			0x06
#define USB_REQ_SETDESCRIPTOR			0x07
#define USB_REQ_GETCONFIG				0x08
#define USB_REQ_SETCONFIG				0x09
#define USB_REQ_GETINTERFACE			0x0a
#define USB_REQ_SETINTERFACE			0x0b
#define USB_REQ_SYNCFRAME				0x0c

/* Descriptor sizes per descriptor type */
#define USB_DT_DEVICE_SIZE				18
#define USB_DT_CONFIG_SIZE				9
#define USB_DT_INTERFACE_SIZE			9
#define USB_DT_ENDPOINT_SIZE			7
#define USB_DT_ENDPOINT_AUDIO_SIZE		9	/* Audio extension */
#define USB_DT_HUB_NONVAR_SIZE			7

/* control message request type bitmask */
#define USB_CTRLTYPE_DIR_HOST2DEVICE	(0<<7)
#define USB_CTRLTYPE_DIR_DEVICE2HOST	(1<<7)
#define USB_CTRLTYPE_TYPE_STANDARD		(0<<5)
#define USB_CTRLTYPE_TYPE_CLASS			(1<<5)
#define USB_CTRLTYPE_TYPE_VENDOR		(2<<5)
#define USB_CTRLTYPE_TYPE_RESERVED		(3<<5)
#define USB_CTRLTYPE_REC_DEVICE			0
#define USB_CTRLTYPE_REC_INTERFACE		1
#define USB_CTRLTYPE_REC_ENDPOINT		2
#define USB_CTRLTYPE_REC_OTHER			3

#define USB_FEATURE_ENDPOINT_HALT		0
    
#define USB_ENDPOINT_IN					0x80
#define USB_ENDPOINT_OUT				0x00


#ifdef __cplusplus
   extern "C" {
#endif /* __cplusplus */
# define ATTRIBUTE_PACKED				__attribute__((packed))

typedef struct _usbctrlrequest {
	u8 bRequestType;
	u8 bRequest;
	u16 wValue;

	u16 wIndex;
	u16 wLength;
} ATTRIBUTE_PACKED usbctrlrequest;

typedef struct _usbendpointdesc
{
	u8 bLength;
	u8 bDescriptorType;
	u8 bEndpointAddress;
	u8 bmAttributes;

	u16 wMaxPacketSize;
	u8 bInterval;
	u8 pad;
} ATTRIBUTE_PACKED usb_endpointdesc;

typedef struct _usbinterfacedesc
{
	u8 bLength;
	u8 bDescriptorType;
	u8 bInterfaceNumber;
	u8 bAlternateSetting;

	u8 bNumEndpoints;
	u8 bInterfaceClass;
	u8 bInterfaceSubClass;
	u8 bInterfaceProtocol;

	u8 iInterface;
	struct _usbendpointdesc *endpoints;
} ATTRIBUTE_PACKED usb_interfacedesc;

typedef struct _usbconfdesc
{
	u8 bLength;
	u8 bDescriptorType;
	u16 wTotalLength;

	u8 bNumInterfaces;
	u8 bConfigurationValue;
	u8 iConfiguration;
	u8 bmAttributes;

	u8 bMaxPower;
	struct _usbinterfacedesc *interfaces;
} ATTRIBUTE_PACKED usb_configurationdesc;

typedef struct _usbdevdesc 
{
	u8  bLength;
	u8  bDescriptorType;
	u16 bcdUSB;

	u8  bDeviceClass;
	u8  bDeviceSubClass;
	u8  bDeviceProtocol;
	u8  bMaxPacketSize0;

	u16 idVendor;
	u16 idProduct;
	
	u16 bcdDevice;
	u8  iManufacturer;	
	u8  iProduct;

	u8  iSerialNumber;
	u8  bNumConfigurations;
	struct _usbconfdesc *configurations;
} ATTRIBUTE_PACKED usb_devdesc;

struct ehci_device;

s32 USB_OpenDevice(const char *device,u16 vid,u16 pid,struct ehci_device **fd);
s32 USB_CloseDevice(struct ehci_device **fd);

s32 USB_GetDescriptors(struct ehci_device *fd, usb_devdesc *udd);
void USB_FreeDescriptors(usb_devdesc *udd);

s32 USB_GetDeviceDescription(struct ehci_device *fd,usb_devdesc *devdesc);

void USB_SuspendDevice(struct ehci_device *fd);
void USB_ResumeDevice(struct ehci_device *fd);

s32 USB_ReadIntrMsg(struct ehci_device *fd,u8 bEndpoint,u16 wLength,void *rpData);

s32 USB_ReadBlkMsg(struct ehci_device *fd,u8 bEndpoint,u16 wLength,void *rpData);

s32 USB_ReadCtrlMsg(struct ehci_device *fd,u8 bmRequestType,u8 bmRequest,u16 wValue,u16 wIndex,u16 wLength,void *rpData);

s32 USB_WriteIntrMsg(struct ehci_device *fd,u8 bEndpoint,u16 wLength,void *rpData);

s32 USB_WriteBlkMsg(struct ehci_device *fd,u8 bEndpoint,u16 wLength,void *rpData);

s32 USB_WriteCtrlMsg(struct ehci_device *fd,u8 bmRequestType,u8 bmRequest,u16 wValue,u16 wIndex,u16 wLength,void *rpData);

s32 USB_GetConfiguration(struct ehci_device *fd, u8 *configuration);
s32 USB_SetConfiguration(struct ehci_device *fd, u8 configuration);
s32 USB_SetAlternativeInterface(struct ehci_device *fd, u8 interface, u8 alternateSetting);
s32 USB_ClearHalt(struct ehci_device *fd, u8 endpointAddress);
s32 USB_GetDeviceList(const char *devpath,void *descr_buffer,u8 num_descr,u8 b0,u8 *cnt_descr);

/* alloc memory from the USB subsystem */
void * USB_Alloc(int size);
void USB_Free(void *ptr);

#ifdef __cplusplus
   }
#endif /* __cplusplus */


#endif