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mirror of git://projects.qi-hardware.com/ben-wpan.git synced 2024-12-23 16:53:21 +02:00
ben-wpan/atusb/fw/usb/usb.h
Werner Almesberger 376236949b atusb/fw/usb/: we were busy-looping on TXINI. Mask the interrupt when idle.
- usb/usb.h (usb_ep_change), usb/atu2.c (usb_ep_change): new function
  called by the USB stack to notify the hardware-specific driver of
  an endpoint state change (EP_TX or EP_RX)
- usb/usb.c (usb_io): call usb_ep_change
- usb/atu2.c (handle_ep): mask TXINI if we have nothing to send
2011-06-11 14:17:44 -03:00

158 lines
3.3 KiB
C

/*
* fw/usb//usb.h - USB hardware setup and standard device requests
*
* Written 2008, 2009, 2011 by Werner Almesberger
* Copyright 2008, 2009, 2011 Werner Almesberger
*
* 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.
*/
#ifndef USB_H
#define USB_H
#include <stdint.h>
/*
* Descriptor types
*
* Reuse libusb naming scheme (/usr/include/usb.h)
*/
#define USB_DT_DEVICE 1
#define USB_DT_CONFIG 2
#define USB_DT_STRING 3
#define USB_DT_INTERFACE 4
#define USB_DT_ENDPOINT 5
/*
* Device classes
*
* Reuse libusb naming scheme (/usr/include/usb.h)
*/
#define USB_CLASS_PER_INTERFACE 0xfe
#define USB_CLASS_VENDOR_SPEC 0xff
/*
* Configuration attributes
*/
#define USB_ATTR_BUS_POWERED 0x80
#define USB_ATTR_SELF_POWERED 0x40
#define USB_ATTR_REMOTE_WAKEUP 0x20
/*
* Setup request types
*/
#define TO_DEVICE(req) (0x00 | (req) << 8)
#define FROM_DEVICE(req) (0x80 | (req) << 8)
#define TO_INTERFACE(req) (0x01 | (req) << 8)
#define FROM_INTERFACE(req) (0x81 | (req) << 8)
#define TO_ENDPOINT(req) (0x02 | (req) << 8)
#define FROM_ENDPOINT(req) (0x82 | (req) << 8)
/*
* Setup requests
*/
#define GET_STATUS 0x00
#define CLEAR_FEATURE 0x01
#define SET_FEATURE 0x03
#define SET_ADDRESS 0x05
#define GET_DESCRIPTOR 0x06
#define SET_DESCRIPTOR 0x07
#define GET_CONFIGURATION 0x08
#define SET_CONFIGURATION 0x09
#define GET_INTERFACE 0x0a
#define SET_INTERFACE 0x0b
#define SYNCH_FRAME 0x0c
/*
* USB Language ID codes
*
* http://www.usb.org/developers/docs/USB_LANGIDs.pdf
*/
#define USB_LANGID_ENGLISH_US 0x409
/*
* Odd. sdcc seems to think "x" assumes the size of the destination, i.e.,
* uint8_t. Hence the cast.
*/
#define LE(x) ((uint16_t) (x) & 0xff), ((uint16_t) (x) >> 8)
#define LO(x) (((uint8_t *) &(x))[0])
#define HI(x) (((uint8_t *) &(x))[1])
#ifdef LOW_SPEED
#define EP0_SIZE 8
#else
#define EP0_SIZE 64
#endif
#define EP1_SIZE 64 /* simplify */
enum ep_state {
EP_IDLE,
EP_RX,
EP_TX,
EP_STALL,
};
struct ep_descr {
enum ep_state state;
uint8_t *buf;
uint8_t *end;
uint8_t size;
void (*callback)(void *user);
void *user;
};
struct setup_request {
uint8_t bmRequestType;
uint8_t bRequest;
uint16_t wValue;
uint16_t wIndex;
uint16_t wLength;
};
extern const uint8_t device_descriptor[];
extern const uint8_t config_descriptor[];
extern struct ep_descr eps[];
extern int (*user_setup)(const struct setup_request *setup);
extern void (*user_set_interface)(int nth);
extern int (*user_get_descriptor)(uint8_t type, uint8_t index,
const uint8_t **reply, uint8_t *size);
extern void (*user_reset)(void);
#define usb_left(ep) ((ep)->end-(ep)->buf)
#define usb_send(ep, buf, size, callback, user) \
usb_io(ep, EP_TX, (void *) buf, size, callback, user)
#define usb_recv(ep, buf, size, callback, user) \
usb_io(ep, EP_RX, buf, size, callback, user)
void usb_io(struct ep_descr *ep, enum ep_state state, uint8_t *buf,
uint8_t size, void (*callback)(void *user), void *user);
int handle_setup(const struct setup_request *setup);
int set_addr(uint8_t addr);
void usb_ep_change(struct ep_descr *ep);
void usb_reset(void);
void usb_init(void);
#endif /* !USB_H */