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/* -*- c++ -*- */
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/*
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* Copyright 2003 Free Software Foundation, Inc.
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*
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* This file is part of GNU Radio
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*
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* GNU Radio is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3, or (at your option)
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* any later version.
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*
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* GNU Radio is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Radio; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef _ISR_H_
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#define _ISR_H_
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/************************************************************************/
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/** \file isr.h
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*************************************************************************
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* \brief routines for managing interrupt services routines
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*
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* The FX2 has three discrete sets of interrupt vectors.
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* The first set is the standard 8051 vector (13 8-byte entries).
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* The second set is USB interrupt autovector (32 4-byte entries).
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* The third set is the FIFO/GPIF autovector (14 4-byte entries).
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*
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* Since all the code we're running in the FX2 is ram based, we
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* forego the typical "initialize the interrupt vectors at link time"
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* strategy, in favor of calls at run time that install the correct
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* pointers to functions.
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*
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* \author GNU Radio
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*/
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/*
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* Standard Vector numbers
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*/
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#define SV_INT_0 0x03 /**< INT0 Pin */
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#define SV_TIMER_0 0x0b /**< Timer 0 Overflow */
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#define SV_INT_1 0x13 /**< INT1 Pin */
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#define SV_TIMER_1 0x1b /**< Timer 1 Overflow */
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#define SV_SERIAL_0 0x23 /**< USART 0 Rx & Tx */
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#define SV_TIMER_2 0x2b /**< Timer 2 Overflow */
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#define SV_RESUME 0x33 /**< WAKEUP / WU2 Pin or USB Resume */
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#define SV_SERIAL_1 0x3b /**< USART 1 Rx & Tx */
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#define SV_INT_2 0x43 /**< (INT_2) points at USB autovector */
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#define SV_I2C 0x4b /**< I2C Bus */
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#define SV_INT_4 0x53 /**< (INT_4) points at FIFO/GPIF autovector */
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#define SV_INT_5 0x5b /**< INT5 Pin */
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#define SV_INT_6 0x63 /**< INT6 Pin */
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#define SV_MIN SV_INT_0
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#define SV_MAX SV_INT_6
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/*
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* USB Auto Vector numbers
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*/
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#define UV_SUDAV 0x00 /**< SETUP Data Available */
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#define UV_SOF 0x04 /**< Start of Frame (or Microframe) */
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#define UV_SUTOK 0x08 /**< Setup Token Received */
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#define UV_SUSPEND 0x0c /**< USB Suspend request */
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#define UV_USBRESET 0x10 /**< Bus Reset */
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#define UV_HIGHSPEED 0x14 /**< Entered high speed operation */
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#define UV_EP0ACK 0x18 /**< EZ-USB ACK'd the CONTROL Handshake */
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#define UV_SPARE_1C 0x1c
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#define UV_EP0IN 0x20 /**< EP0-IN ready to be loaded with data */
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#define UV_EP0OUT 0x24 /**< EP0-OUT has USB data */
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#define UV_EP1IN 0x28 /**< EP1-IN ready to be loaded with data */
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#define UV_EP1OUT 0x2c /**< EP1-OUT has USB data */
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#define UV_EP2 0x30 /**< IN: buffer available. OUT: buffer has data */
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#define UV_EP4 0x34 /**< IN: buffer available. OUT: buffer has data */
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#define UV_EP6 0x38 /**< IN: buffer available. OUT: buffer has data */
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#define UV_EP8 0x3c /**< IN: buffer available. OUT: buffer has data */
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#define UV_IBN 0x40 /**< IN-Bulk-NAK (any IN endpoint) */
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#define UV_SPARE_44 0x44
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#define UV_EP0PINGNAK 0x48 /**< EP0 OUT was Pinged and it NAK'd */
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#define UV_EP1PINGNAK 0x4c /**< EP1 OUT was Pinged and it NAK'd */
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#define UV_EP2PINGNAK 0x50 /**< EP2 OUT was Pinged and it NAK'd */
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#define UV_EP4PINGNAK 0x54 /**< EP4 OUT was Pinged and it NAK'd */
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#define UV_EP6PINGNAK 0x58 /**< EP6 OUT was Pinged and it NAK'd */
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#define UV_EP8PINGNAK 0x5c /**< EP8 OUT was Pinged and it NAK'd */
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#define UV_ERRLIMIT 0x60 /**< Bus errors exceeded the programmed limit */
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#define UV_SPARE_64 0x64
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#define UV_SPARE_68 0x68
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#define UV_SPARE_6C 0x6c
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#define UV_EP2ISOERR 0x70 /**< ISO EP2 OUT PID sequence error */
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#define UV_EP4ISOERR 0x74 /**< ISO EP4 OUT PID sequence error */
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#define UV_EP6ISOERR 0x78 /**< ISO EP6 OUT PID sequence error */
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#define UV_EP8ISOERR 0x7c /**< ISO EP8 OUT PID sequence error */
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#define UV_MIN UV_SUDAV
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#define UV_MAX UV_EP8ISOERR
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/*
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* FIFO/GPIF Auto Vector numbers
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*/
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#define FGV_EP2PF 0x00 /**< Endpoint 2 Programmable Flag */
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#define FGV_EP4PF 0x04 /**< Endpoint 4 Programmable Flag */
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#define FGV_EP6PF 0x08 /**< Endpoint 6 Programmable Flag */
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#define FGV_EP8PF 0x0c /**< Endpoint 8 Programmable Flag */
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#define FGV_EP2EF 0x10 /**< Endpoint 2 Empty Flag */
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#define FGV_EP4EF 0x14 /**< Endpoint 4 Empty Flag */
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#define FGV_EP6EF 0x18 /**< Endpoint 6 Empty Flag */
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#define FGV_EP8EF 0x1c /**< Endpoint 8 Empty Flag */
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#define FGV_EP2FF 0x20 /**< Endpoint 2 Full Flag */
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#define FGV_EP4FF 0x24 /**< Endpoint 4 Full Flag */
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#define FGV_EP6FF 0x28 /**< Endpoint 6 Full Flag */
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#define FGV_EP8FF 0x2c /**< Endpoint 8 Full Flag */
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#define FGV_GPIFDONE 0x30 /**< GPIF Operation Complete */
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#define FGV_GPIFWF 0x34 /**< GPIF Waveform */
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#define FGV_MIN FGV_EP2PF
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#define FGV_MAX FGV_GPIFWF
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/**
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* \brief Hook standard interrupt vector.
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*
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* \param[in] vector_number is from the SV_<foo> list above.
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* \param[in] addr is the address of the interrupt service routine.
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*/
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void hook_sv (unsigned char vector_number, unsigned short addr);
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/**
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* \brief Hook usb interrupt vector.
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*
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* \param[in] vector_number is from the UV_<foo> list above.
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* \param[in] addr is the address of the interrupt service routine.
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*/
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void hook_uv (unsigned char vector_number, unsigned short addr);
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/**
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* \brief Hook fifo/gpif interrupt vector.
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*
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* \param[in] vector_number is from the FGV_<foo> list above.
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* \param[in] addr is the address of the interrupt service routine.
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*/
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void hook_fgv (unsigned char vector_number, unsigned short addr);
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/**
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* One time call to enable autovectoring for both USB and FIFO/GPIF
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*/
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void setup_autovectors (void);
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/**
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* Makro to clear the pending USB interrrupt
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*
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* \warning Must be called in each usb interrupt handler
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*/
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#define clear_usb_irq() \
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EXIF &= ~bmEXIF_USBINT; \
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INT2CLR = 0
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/**
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* Makro to clear the pending FIFO/GPIF interrupt
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*
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* \warning Must be called in each fifo/gpif interrupt handler
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*/
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#define clear_fifo_gpif_irq() \
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EXIF &= ~bmEXIF_IE4; \
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INT4CLR = 0
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#endif /* _ISR_H_ */
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