/* SPDX-License-Identifier: GPL-2.0+ */
/*
* (C) Copyright 2003
* Gerry Hamel, geh@ti.com, Texas Instruments
*
* Based on linux/drivers/usbd/usbd.h
*
* Copyright (c) 2000, 2001, 2002 Lineo
* Copyright (c) 2001 Hewlett Packard
*
* By:
* Stuart Lynne <sl@lineo.com>,
* Tom Rushworth <tbr@lineo.com>,
* Bruce Balden <balden@lineo.com>
*/
#ifndef __USBDCORE_H__
#define __USBDCORE_H__
#include <common.h>
#include "usbdescriptors.h"
#define MAX_URBS_QUEUED 5
#if 1
#define usberr(fmt,args...) serial_printf("ERROR: %s(), %d: "fmt"\n",__FUNCTION__,__LINE__,##args)
#else
#define usberr(fmt,args...) do{}while(0)
#endif
#if 0
#define usbdbg(fmt,args...) serial_printf("debug: %s(), %d: "fmt"\n",__FUNCTION__,__LINE__,##args)
#else
#define usbdbg(fmt,args...) do{}while(0)
#endif
#if 0
#define usbinfo(fmt,args...) serial_printf("info: %s(), %d: "fmt"\n",__FUNCTION__,__LINE__,##args)
#else
#define usbinfo(fmt,args...) do{}while(0)
#endif
#ifndef le16_to_cpu
#define le16_to_cpu(x) (x)
#endif
#ifndef inb
#define inb(p) (*(volatile u8*)(p))
#endif
#ifndef outb
#define outb(val,p) (*(volatile u8*)(p) = (val))
#endif
#ifndef inw
#define inw(p) (*(volatile u16*)(p))
#endif
#ifndef outw
#define outw(val,p) (*(volatile u16*)(p) = (val))
#endif
#ifndef inl
#define inl(p) (*(volatile u32*)(p))
#endif
#ifndef outl
#define outl(val,p) (*(volatile u32*)(p) = (val))
#endif
#ifndef insw
#define insw(p,to,len) mmio_insw(p,to,len)
#endif
#ifndef outsw
#define outsw(p,from,len) mmio_outsw(p,from,len)
#endif
#ifndef insb
#define insb(p,to,len) mmio_insb(p,to,len)
#endif
#ifndef mmio_insw
#define mmio_insw(r,b,l) ({ int __i ; \
u16 *__b2; \
__b2 = (u16 *) b; \
for (__i = 0; __i < l; __i++) { \
*(__b2 + __i) = inw(r); \
}; \
})
#endif
#ifndef mmio_outsw
#define mmio_outsw(r,b,l) ({ int __i; \
u16 *__b2; \
__b2 = (u16 *) b; \
for (__i = 0; __i < l; __i++) { \
outw( *(__b2 + __i), r); \
} \
})
#endif
#ifndef mmio_insb
#define mmio_insb(r,b,l) ({ int __i ; \
u8 *__b2; \
__b2 = (u8 *) b; \
for (__i = 0; __i < l; __i++) { \
*(__b2 + __i) = inb(r); \
}; \
})
#endif
/*
* Structure member address manipulation macros.
* These are used by client code (code using the urb_link routines), since
* the urb_link structure is embedded in the client data structures.
*
* Note: a macro offsetof equivalent to member_offset is defined in stddef.h
* but this is kept here for the sake of portability.
*
* p2surround returns a pointer to the surrounding structure given
* type of the surrounding structure, the name memb of the structure
* member pointed at by ptr. For example, if you have:
*
* struct foo {
* int x;
* float y;
* char z;
* } thingy;
*
* char *cp = &thingy.z;
*
* then
*
* &thingy == p2surround(struct foo, z, cp)
*
* Clear?
*/
#define _cv_(ptr) ((char*)(void*)(ptr))
#define member_offset(type,memb) (_cv_(&(((type*)0)->memb))-(char*)0)
#define p2surround(type,memb,ptr) ((type*)(void*)(_cv_(ptr)-member_offset(type,memb)))
struct urb;
struct usb_endpoint_instance;
struct usb_interface_instance;
struct usb_configuration_instance;
struct usb_device_instance;
struct usb_bus_instance;
/*
* Device and/or Interface Class codes
*/
#define USB_CLASS_PER_INTERFACE 0 /* for DeviceClass */
#define USB_CLASS_AUDIO 1
#define USB_CLASS_COMM 2
#define USB_CLASS_HID 3
#define USB_CLASS_PHYSICAL 5
#define USB_CLASS_PRINTER 7
#define USB_CLASS_MASS_STORAGE 8
#define USB_CLASS_HUB 9
#define USB_CLASS_DATA 10
#define USB_CLASS_APP_SPEC 0xfe
#define USB_CLASS_VENDOR_SPEC 0xff
/*
* USB types
*/
#define USB_TYPE_STANDARD (0x00 << 5)
#define USB_TYPE_CLASS (0x01 << 5)
#define USB_TYPE_VENDOR (0x02 << 5)
#define USB_TYPE_RESERVED (0x03 << 5)
/*
* USB recipients
*/
#define USB_RECIP_DEVICE 0x00
#define USB_RECIP_INTERFACE 0x01
#define USB_RECIP_ENDPOINT 0x02
#define USB_RECIP_OTHER 0x03
/*
* USB directions
*/
#define USB_DIR_OUT 0
#define USB_DIR_IN 0x80
/*
* 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
#if defined(CONFIG_USBD_HS)
#define USB_DT_QUAL 0x06
#endif
#define USB_DT_HID (USB_TYPE_CLASS | 0x01)
#define USB_DT_REPORT (USB_TYPE_CLASS | 0x02)
#define USB_DT_PHYSICAL (USB_TYPE_CLASS | 0x03)
#define USB_DT_HUB (USB_TYPE_CLASS | 0x09)
/*
* 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
#define USB_DT_HID_SIZE 9
/*
* Endpoints
*/
#define USB_ENDPOINT_NUMBER_MASK 0x0f /* in bEndpointAddress */
#define USB_ENDPOINT_DIR_MASK 0x80
#define USB_ENDPOINT_XFERTYPE_MASK 0x03 /* in bmAttributes */
#define USB_ENDPOINT_XFER_CONTROL 0
#define USB_ENDPOINT_XFER_ISOC 1
#define USB_ENDPOINT_XFER_BULK 2
#define USB_ENDPOINT_XFER_INT 3
/*
* USB Packet IDs (PIDs)
*/
#define USB_PID_UNDEF_0 0xf0
#define USB_PID_OUT 0xe1
#define USB_PID_ACK 0xd2
#define USB_PID_DATA0 0xc3
#define USB_PID_PING 0xb4 /* USB 2.0 */
#define USB_PID_SOF 0xa5
#define USB_PID_NYET 0x96 /* USB 2.0 */
#define USB_PID_DATA2 0x87 /* USB 2.0 */
#define USB_PID_SPLIT 0x78 /* USB 2.0 */
#define USB_PID_IN 0x69
#define USB_PID_NAK 0x5a
#define USB_PID_DATA1 0x4b
#define USB_PID_PREAMBLE 0x3c /* Token mode */
#define USB_PID_ERR 0x3c /* USB 2.0: handshake mode */
#define USB_PID_SETUP 0x2d
#define USB_PID_STALL 0x1e
#define USB_PID_MDATA 0x0f /* USB 2.0 */
/*
* Standard requests
*/
#define USB_REQ_GET_STATUS 0x00
#define USB_REQ_CLEAR_FEATURE 0x01
#define USB_REQ_SET_FEATURE 0x03
#define USB_REQ_SET_ADDRESS 0x05
#define USB_REQ_GET_DESCRIPTOR 0x06
#define USB_REQ_SET_DESCRIPTOR 0x07
#define USB_REQ_GET_CONFIGURATION 0x08
#define USB_REQ_SET_CONFIGURATION 0x09
#define USB_REQ_GET_INTERFACE 0x0A
#define USB_REQ_SET_INTERFACE 0x0B
#define USB_REQ_SYNCH_FRAME 0x0C
#define USBD_DEVICE_REQUESTS(x) (((unsigned int)x <= USB_REQ_SYNCH_FRAME) ? usbd_device_requests[x] : "UNKNOWN")
/*
* HID requests
*/
#define USB_REQ_GET_REPORT 0x01
#define USB_REQ_GET_IDLE 0x02
#define USB_REQ_GET_PROTOCOL 0x03
#define USB_REQ_SET_REPORT 0x09
#define USB_REQ_SET_IDLE 0x0A
#define USB_REQ_SET_PROTOCOL 0x0B
/*
* USB Spec Release number
*/
#if defined(CONFIG_USBD_HS)
#define USB_BCD_VERSION 0x0200
#else
#define USB_BCD_VERSION 0x0110
#endif
/*
* Device Requests (c.f Table 9-2)
*/
#define USB_REQ_DIRECTION_MASK 0x80
#define USB_REQ_TYPE_MASK 0x60
#define USB_REQ_RECIPIENT_MASK 0x1f
#define USB_REQ_DEVICE2HOST 0x80
#define USB_REQ_HOST2DEVICE 0x00
#define USB_REQ_TYPE_STANDARD 0x00
#define USB_REQ_TYPE_CLASS 0x20
#define USB_REQ_TYPE_VENDOR 0x40
#define USB_REQ_RECIPIENT_DEVICE 0x00
#define USB_REQ_RECIPIENT_INTERFACE 0x01
#define USB_REQ_RECIPIENT_ENDPOINT 0x02
#define USB_REQ_RECIPIENT_OTHER 0x03
/*
* get status bits
*/
#define USB_STATUS_SELFPOWERED 0x01
#define USB_STATUS_REMOTEWAKEUP 0x02
#define USB_STATUS_HALT 0x01
/*
* descriptor types
*/
#define USB_DESCRIPTOR_TYPE_DEVICE 0x01
#define USB_DESCRIPTOR_TYPE_CONFIGURATION 0x02
#define USB_DESCRIPTOR_TYPE_STRING 0x03
#define USB_DESCRIPTOR_TYPE_INTERFACE 0x04
#define USB_DESCRIPTOR_TYPE_ENDPOINT 0x05
#define USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER 0x06
#define USB_DESCRIPTOR_TYPE_OTHER_SPEED_CONFIGURATION 0x07
#define USB_DESCRIPTOR_TYPE_INTERFACE_POWER 0x08
#define USB_DESCRIPTOR_TYPE_HID 0x21
#define USB_DESCRIPTOR_TYPE_REPORT 0x22
#define USBD_DEVICE_DESCRIPTORS(x) (((unsigned int)x <= USB_DESCRIPTOR_TYPE_INTERFACE_POWER) ? \
usbd_device_descriptors[x] : "UNKNOWN")
/*
* standard feature selectors
*/
#define USB_ENDPOINT_HALT 0x00
#define USB_DEVICE_REMOTE_WAKEUP 0x01
#define USB_TEST_MODE 0x02
/* USB Requests
*
*/
struct usb_device_request {
u8 bmRequestType;
u8 bRequest;
u16 wValue;
u16 wIndex;
u16 wLength;
} __attribute__ ((packed));
/* USB Status
*
*/
typedef enum urb_send_status {
SEND_IN_PROGRESS,
SEND_FINISHED_OK,
SEND_FINISHED_ERROR,
RECV_READY,
RECV_OK,
RECV_ERROR
} urb_send_status_t;
/*
* Device State (c.f USB Spec 2.0 Figure 9-1)
*
* What state the usb device is in.
*
* Note the state does not change if the device is suspended, we simply set a
* flag to show that it is suspended.
*
*/
typedef enum usb_device_state {
STATE_INIT, /* just initialized */
STATE_CREATED, /* just created */
STATE_ATTACHED, /* we are attached */
STATE_POWERED, /* we have seen power indication (electrical bus signal) */
STATE_DEFAULT, /* we been reset */
STATE_ADDRESSED, /* we have been addressed (in default configuration) */
STATE_CONFIGURED, /* we have seen a set configuration device command */
STATE_UNKNOWN, /* destroyed */
} usb_device_state_t;
#define USBD_DEVICE_STATE(x) (((unsigned int)x <= STATE_UNKNOWN) ? usbd_device_states[x] : "UNKNOWN")
/*
* Device status
*
* Overall state
*/
typedef enum usb_device_status {
USBD_OPENING, /* we are currently opening */
USBD_OK, /* ok to use */
USBD_SUSPENDED, /* we are currently suspended */
USBD_CLOSING, /* we are currently closing */
} usb_device_status_t;
#define USBD_DEVICE_STATUS(x) (((unsigned int)x <= USBD_CLOSING) ? usbd_device_status[x] : "UNKNOWN")
/*
* Device Events
*
* These are defined in the USB Spec (c.f USB Spec 2.0 Figure 9-1).
*
* There are additional events defined to handle some extra actions we need
* to have handled.
*
*/
typedef enum usb_device_event {
DEVICE_UNKNOWN, /* bi - unknown event */
DEVICE_INIT, /* bi - initialize */
DEVICE_CREATE, /* bi - */
DEVICE_HUB_CONFIGURED, /* bi - bus has been plugged int */
DEVICE_RESET, /* bi - hub has powered our port */
DEVICE_ADDRESS_ASSIGNED, /* ep0 - set address setup received */
DEVICE_CONFIGURED, /* ep0 - set configure setup received */
DEVICE_SET_INTERFACE, /* ep0 - set interface setup received */
DEVICE_SET_FEATURE, /* ep0 - set feature setup received */
DEVICE_CLEAR_FEATURE, /* ep0 - clear feature setup received */
DEVICE_DE_CONFIGURED, /* ep0 - set configure setup received for ?? */
DEVICE_BUS_INACTIVE, /* bi - bus in inactive (no SOF packets) */
DEVICE_BUS_ACTIVITY, /* bi - bus is active again */
DEVICE_POWER_INTERRUPTION, /* bi - hub has depowered our port */
DEVICE_HUB_RESET, /* bi - bus has been unplugged */
DEVICE_DESTROY, /* bi - device instance should be destroyed */
DEVICE_HOTPLUG, /* bi - a hotplug event has occurred */
DEVICE_FUNCTION_PRIVATE, /* function - private */
} usb_device_event_t;
typedef struct urb_link {
struct urb_link *next;
struct urb_link *prev;
} urb_link;
/* USB Data structure - for passing data around.
*
* This is used for both sending and receiving data.
*
* The callback function is used to let the function driver know when
* transmitted data has been sent.
*
* The callback function is set by the alloc_recv function when an urb is
* allocated for receiving data for an endpoint and used to call the
* function driver to inform it that data has arrived.
*/
/* in linux we'd malloc this, but in u-boot we prefer static data */
#define URB_BUF_SIZE 512
struct urb {
struct usb_endpoint_instance *endpoint;
struct usb_device_instance *device;
struct usb_device_request device_request; /* contents of received SETUP packet */
struct urb_link link; /* embedded struct for circular doubly linked list of urbs */
u8* buffer;
unsigned int buffer_length;
unsigned int actual_length;
urb_send_status_t status;
int data;
u16 buffer_data[URB_BUF_SIZE]; /* data received (OUT) or being sent (IN) */
};
/* Endpoint configuration
*
* Per endpoint configuration data. Used to track which function driver owns
* an endpoint.
*
*/
struct usb_endpoint_instance {
int endpoint_address; /* logical endpoint address */
/* control */
int status; /* halted */
int state; /* available for use by bus interface driver */
/* receive side */
struct urb_link rcv; /* received urbs */
struct urb_link rdy; /* empty urbs ready to receive */
struct urb *rcv_urb; /* active urb */
int rcv_attributes; /* copy of bmAttributes from endpoint descriptor */
int rcv_packetSize; /* maximum packet size from endpoint descriptor */
int rcv_transferSize; /* maximum transfer size from function driver */
int rcv_queue;
/* transmit side */
struct urb_link tx; /* urbs ready to transmit */
struct urb_link done; /* transmitted urbs */
struct urb *tx_urb; /* active urb */
int tx_attributes; /* copy of bmAttributes from endpoint descriptor */
int tx_packetSize; /* maximum packet size from endpoint descriptor */
int tx_transferSize; /* maximum transfer size from function driver */
int tx_queue;
int sent; /* data already sent */
int last; /* data sent in last packet XXX do we need this */
};
struct usb_alternate_instance {
struct usb_interface_descriptor *interface_descriptor;
int endpoints;
int *endpoint_transfersize_array;
struct usb_endpoint_descriptor **endpoints_descriptor_array;
};
struct usb_interface_instance {
int alternates;
struct usb_alternate_instance *alternates_instance_array;
};
struct usb_configuration_instance {
int interfaces;
struct usb_configuration_descriptor *configuration_descriptor;
struct usb_interface_instance *interface_instance_array;
};
/* USB Device Instance
*
* For each physical bus interface we create a logical device structure. This
* tracks all of the required state to track the USB HOST's view of the device.
*
* Keep track of the device configuration for a real physical bus interface,
* this includes the bus interface, multiple function drivers, the current
* configuration and the current state.
*
* This will show:
* the specific bus interface driver
* the default endpoint 0 driver
* the configured function driver
* device state
* device status
* endpoint list
*/
struct usb_device_instance {
/* generic */
char *name;
struct usb_device_descriptor *device_descriptor; /* per device descriptor */
#if defined(CONFIG_USBD_HS)
struct usb_qualifier_descriptor *qualifier_descriptor;
#endif
void (*event) (struct usb_device_instance *device, usb_device_event_t event, int data);
/* Do cdc device specific control requests */
int (*cdc_recv_setup)(struct usb_device_request *request, struct urb *urb);
/* bus interface */
struct usb_bus_instance *bus; /* which bus interface driver */
/* configuration descriptors */
int configurations;
struct usb_configuration_instance *configuration_instance_array;
/* device state */
usb_device_state_t device_state; /* current USB Device state */
usb_device_state_t device_previous_state; /* current USB Device state */
u8 address; /* current address (zero is default) */
u8 configuration; /* current show configuration (zero is default) */
u8 interface; /* current interface (zero is default) */
u8 alternate; /* alternate flag */
usb_device_status_t status; /* device status */
int urbs_queued; /* number of submitted urbs */
/* Shouldn't need to make this atomic, all we need is a change indicator */
unsigned long usbd_rxtx_timestamp;
unsigned long usbd_last_rxtx_timestamp;
};
/* Bus Interface configuration structure
*
* This is allocated for each configured instance of a bus interface driver.
*
* The privdata pointer may be used by the bus interface driver to store private
* per instance state information.
*/
struct usb_bus_instance {
struct usb_device_instance *device;
struct usb_endpoint_instance *endpoint_array; /* array of available configured endpoints */
int max_endpoints; /* maximimum number of rx enpoints */
unsigned char maxpacketsize;
unsigned int serial_number;
char *serial_number_str;
void *privdata; /* private data for the bus interface */
};
extern char *usbd_device_events[];
extern char *usbd_device_states[];
extern char *usbd_device_status[];
extern char *usbd_device_requests[];
extern char *usbd_device_descriptors[];
void urb_link_init (urb_link * ul);
void urb_detach (struct urb *urb);
urb_link *first_urb_link (urb_link * hd);
struct urb *first_urb (urb_link * hd);
struct urb *first_urb_detached (urb_link * hd);
void urb_append (urb_link * hd, struct urb *urb);
struct urb *usbd_alloc_urb (struct usb_device_instance *device, struct usb_endpoint_instance *endpoint);
void usbd_dealloc_urb (struct urb *urb);
/*
* usbd_device_event is used by bus interface drivers to tell the higher layers that
* certain events have taken place.
*/
void usbd_device_event_irq (struct usb_device_instance *conf, usb_device_event_t, int);
void usbd_device_event (struct usb_device_instance *conf, usb_device_event_t, int);
/* descriptors
*
* Various ways of finding descriptors based on the current device and any
* possible configuration / interface / endpoint for it.
*/
struct usb_configuration_descriptor *usbd_device_configuration_descriptor (struct usb_device_instance *, int, int);
struct usb_function_instance *usbd_device_function_instance (struct usb_device_instance *, unsigned int);
struct usb_interface_instance *usbd_device_interface_instance (struct usb_device_instance *, int, int, int);
struct usb_alternate_instance *usbd_device_alternate_instance (struct usb_device_instance *, int, int, int, int);
struct usb_interface_descriptor *usbd_device_interface_descriptor (struct usb_device_instance *, int, int, int, int);
struct usb_endpoint_descriptor *usbd_device_endpoint_descriptor_index (struct usb_device_instance *, int, int, int, int, int);
struct usb_class_descriptor *usbd_device_class_descriptor_index (struct usb_device_instance *, int, int, int, int, int);
struct usb_class_report_descriptor *usbd_device_class_report_descriptor_index( struct usb_device_instance *, int , int , int , int , int );
struct usb_endpoint_descriptor *usbd_device_endpoint_descriptor (struct usb_device_instance *, int, int, int, int, int);
int usbd_device_endpoint_transfersize (struct usb_device_instance *, int, int, int, int, int);
struct usb_string_descriptor *usbd_get_string (u8);
struct usb_device_descriptor *usbd_device_device_descriptor(struct
usb_device_instance *, int);
#if defined(CONFIG_USBD_HS)
/*
* is_usbd_high_speed routine needs to be defined by specific gadget driver
* It returns true if device enumerates at High speed
* Retuns false otherwise
*/
int is_usbd_high_speed(void);
#endif
int usbd_endpoint_halted (struct usb_device_instance *device, int endpoint);
void usbd_rcv_complete(struct usb_endpoint_instance *endpoint, int len, int urb_bad);
void usbd_tx_complete (struct usb_endpoint_instance *endpoint);
/* These are macros used in debugging */
#ifdef DEBUG
static inline void print_urb(struct urb *u)
{
serial_printf("urb %p\n", (u));
serial_printf("\tendpoint %p\n", u->endpoint);
serial_printf("\tdevice %p\n", u->device);
serial_printf("\tbuffer %p\n", u->buffer);
serial_printf("\tbuffer_length %d\n", u->buffer_length);
serial_printf("\tactual_length %d\n", u->actual_length);
serial_printf("\tstatus %d\n", u->status);
serial_printf("\tdata %d\n", u->data);
}
static inline void print_usb_device_request(struct usb_device_request *r)
{
serial_printf("usb request\n");
serial_printf("\tbmRequestType 0x%2.2x\n", r->bmRequestType);
if ((r->bmRequestType & USB_REQ_DIRECTION_MASK) == 0)
serial_printf("\t\tDirection : To device\n");
else
serial_printf("\t\tDirection : To host\n");
if ((r->bmRequestType & USB_TYPE_STANDARD) == USB_TYPE_STANDARD)
serial_printf("\t\tType : Standard\n");
if ((r->bmRequestType & USB_TYPE_CLASS) == USB_TYPE_CLASS)
serial_printf("\t\tType : Standard\n");
if ((r->bmRequestType & USB_TYPE_VENDOR) == USB_TYPE_VENDOR)
serial_printf("\t\tType : Standard\n");
if ((r->bmRequestType & USB_TYPE_RESERVED) == USB_TYPE_RESERVED)
serial_printf("\t\tType : Standard\n");
if ((r->bmRequestType & USB_REQ_RECIPIENT_MASK) ==
USB_REQ_RECIPIENT_DEVICE)
serial_printf("\t\tRecipient : Device\n");
if ((r->bmRequestType & USB_REQ_RECIPIENT_MASK) ==
USB_REQ_RECIPIENT_INTERFACE)
serial_printf("\t\tRecipient : Interface\n");
if ((r->bmRequestType & USB_REQ_RECIPIENT_MASK) ==
USB_REQ_RECIPIENT_ENDPOINT)
serial_printf("\t\tRecipient : Endpoint\n");
if ((r->bmRequestType & USB_REQ_RECIPIENT_MASK) ==
USB_REQ_RECIPIENT_OTHER)
serial_printf("\t\tRecipient : Other\n");
serial_printf("\tbRequest 0x%2.2x\n", r->bRequest);
if (r->bRequest == USB_REQ_GET_STATUS)
serial_printf("\t\tGET_STATUS\n");
else if (r->bRequest == USB_REQ_SET_ADDRESS)
serial_printf("\t\tSET_ADDRESS\n");
else if (r->bRequest == USB_REQ_SET_FEATURE)
serial_printf("\t\tSET_FEATURE\n");
else if (r->bRequest == USB_REQ_GET_DESCRIPTOR)
serial_printf("\t\tGET_DESCRIPTOR\n");
else if (r->bRequest == USB_REQ_SET_CONFIGURATION)
serial_printf("\t\tSET_CONFIGURATION\n");
else if (r->bRequest == USB_REQ_SET_INTERFACE)
serial_printf("\t\tUSB_REQ_SET_INTERFACE\n");
else
serial_printf("\tUNKNOWN %d\n", r->bRequest);
serial_printf("\twValue 0x%4.4x\n", r->wValue);
if (r->bRequest == USB_REQ_GET_DESCRIPTOR) {
switch (r->wValue >> 8) {
case USB_DESCRIPTOR_TYPE_DEVICE:
serial_printf("\tDEVICE\n");
break;
case USB_DESCRIPTOR_TYPE_CONFIGURATION:
serial_printf("\tCONFIGURATION\n");
break;
case USB_DESCRIPTOR_TYPE_STRING:
serial_printf("\tSTRING\n");
break;
case USB_DESCRIPTOR_TYPE_INTERFACE:
serial_printf("\tINTERFACE\n");
break;
case USB_DESCRIPTOR_TYPE_ENDPOINT:
serial_printf("\tENDPOINT\n");
break;
case USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER:
serial_printf("\tDEVICE_QUALIFIER\n");
break;
case USB_DESCRIPTOR_TYPE_OTHER_SPEED_CONFIGURATION:
serial_printf("\tOTHER_SPEED_CONFIGURATION\n");
break;
case USB_DESCRIPTOR_TYPE_INTERFACE_POWER:
serial_printf("\tINTERFACE_POWER\n");
break;
case USB_DESCRIPTOR_TYPE_HID:
serial_printf("\tHID\n");
break;
case USB_DESCRIPTOR_TYPE_REPORT:
serial_printf("\tREPORT\n");
break;
default:
serial_printf("\tUNKNOWN TYPE\n");
break;
}
}
serial_printf("\twIndex 0x%4.4x\n", r->wIndex);
serial_printf("\twLength 0x%4.4x\n", r->wLength);
}
#else
/* stubs */
#define print_urb(u)
#define print_usb_device_request(r)
#endif /* DEBUG */
#endif