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/* -*- c++ -*- */

/*

 * Copyright 2003 Free Software Foundation, Inc.

 *

 * This file is part of GNU Radio

 *

 * GNU Radio 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 3, or (at your option)

 * any later version.

 *

 * GNU Radio 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 GNU Radio; see the file COPYING.  If not, write to

 * the Free Software Foundation, Inc., 51 Franklin Street,

 * Boston, MA 02110-1301, USA.

 */

#ifndef _ISR_H_

#define _ISR_H_

/************************************************************************/

/** \file isr.h

 *************************************************************************

 * \brief       routines for managing interrupt services routines

 *

 * The FX2 has three discrete sets of interrupt vectors.

 * The first set is the standard 8051 vector (13 8-byte entries).

 * The second set is USB interrupt autovector (32 4-byte entries).

 * The third set is the FIFO/GPIF autovector (14 4-byte entries).

 *

 * Since all the code we're running in the FX2 is ram based, we

 * forego the typical "initialize the interrupt vectors at link time"

 * strategy, in favor of calls at run time that install the correct

 * pointers to functions.

 *

 * \author       GNU Radio

 */

/*

 * Standard Vector numbers

 */

#define SV_INT_0                0x03  /**< INT0 Pin */

#define SV_TIMER_0              0x0b  /**< Timer 0 Overflow */

#define SV_INT_1                0x13  /**< INT1 Pin */

#define SV_TIMER_1              0x1b  /**< Timer 1 Overflow */

#define SV_SERIAL_0             0x23  /**< USART 0 Rx & Tx */

#define SV_TIMER_2              0x2b  /**< Timer 2 Overflow */

#define SV_RESUME               0x33  /**< WAKEUP / WU2 Pin or USB Resume */

#define SV_SERIAL_1             0x3b  /**< USART 1 Rx & Tx */

#define SV_INT_2                0x43  /**< (INT_2) points at USB autovector */

#define SV_I2C                  0x4b  /**< I2C Bus */

#define SV_INT_4                0x53  /**< (INT_4) points at FIFO/GPIF autovector */

#define SV_INT_5                0x5b  /**< INT5 Pin */

#define SV_INT_6                0x63  /**< INT6 Pin */

#define SV_MIN                  SV_INT_0

#define SV_MAX                  SV_INT_6

/*

 * USB Auto Vector numbers

 */

#define UV_SUDAV                0x00  /**< SETUP Data Available */

#define UV_SOF                  0x04  /**< Start of Frame (or Microframe) */

#define UV_SUTOK                0x08  /**< Setup Token Received */

#define UV_SUSPEND              0x0c  /**< USB Suspend request */

#define UV_USBRESET             0x10  /**< Bus Reset */

#define UV_HIGHSPEED            0x14  /**< Entered high speed operation */

#define UV_EP0ACK               0x18  /**< EZ-USB ACK'd the CONTROL Handshake */

#define UV_SPARE_1C             0x1c  

#define UV_EP0IN                0x20  /**< EP0-IN ready to be loaded with data */

#define UV_EP0OUT               0x24  /**< EP0-OUT has USB data */

#define UV_EP1IN                0x28  /**< EP1-IN ready to be loaded with data */

#define UV_EP1OUT               0x2c  /**< EP1-OUT has USB data */

#define UV_EP2                  0x30  /**< IN: buffer available. OUT: buffer has data */

#define UV_EP4                  0x34  /**< IN: buffer available. OUT: buffer has data */

#define UV_EP6                  0x38  /**< IN: buffer available. OUT: buffer has data */

#define UV_EP8                  0x3c  /**< IN: buffer available. OUT: buffer has data */

#define UV_IBN                  0x40  /**< IN-Bulk-NAK (any IN endpoint) */

#define UV_SPARE_44             0x44

#define UV_EP0PINGNAK           0x48  /**< EP0 OUT was Pinged and it NAK'd */

#define UV_EP1PINGNAK           0x4c  /**< EP1 OUT was Pinged and it NAK'd */

#define UV_EP2PINGNAK           0x50  /**< EP2 OUT was Pinged and it NAK'd */

#define UV_EP4PINGNAK           0x54  /**< EP4 OUT was Pinged and it NAK'd */

#define UV_EP6PINGNAK           0x58  /**< EP6 OUT was Pinged and it NAK'd */

#define UV_EP8PINGNAK           0x5c  /**< EP8 OUT was Pinged and it NAK'd */

#define UV_ERRLIMIT             0x60  /**< Bus errors exceeded the programmed limit */

#define UV_SPARE_64             0x64  

#define UV_SPARE_68             0x68

#define UV_SPARE_6C             0x6c

#define UV_EP2ISOERR            0x70  /**< ISO EP2 OUT PID sequence error */

#define UV_EP4ISOERR            0x74  /**< ISO EP4 OUT PID sequence error */

#define UV_EP6ISOERR            0x78  /**< ISO EP6 OUT PID sequence error */

#define UV_EP8ISOERR            0x7c  /**< ISO EP8 OUT PID sequence error */

#define UV_MIN                  UV_SUDAV

#define UV_MAX                  UV_EP8ISOERR

/*

 * FIFO/GPIF Auto Vector numbers

 */

#define FGV_EP2PF               0x00  /**< Endpoint 2 Programmable Flag */

#define FGV_EP4PF               0x04  /**< Endpoint 4 Programmable Flag */

#define FGV_EP6PF               0x08  /**< Endpoint 6 Programmable Flag */

#define FGV_EP8PF               0x0c  /**< Endpoint 8 Programmable Flag */

#define FGV_EP2EF               0x10  /**< Endpoint 2 Empty Flag */

#define FGV_EP4EF               0x14  /**< Endpoint 4 Empty Flag */

#define FGV_EP6EF               0x18  /**< Endpoint 6 Empty Flag */

#define FGV_EP8EF               0x1c  /**< Endpoint 8 Empty Flag */

#define FGV_EP2FF               0x20  /**< Endpoint 2 Full Flag */

#define FGV_EP4FF               0x24  /**< Endpoint 4 Full Flag */

#define FGV_EP6FF               0x28  /**< Endpoint 6 Full Flag */

#define FGV_EP8FF               0x2c  /**< Endpoint 8 Full Flag */

#define FGV_GPIFDONE            0x30  /**< GPIF Operation Complete */

#define FGV_GPIFWF              0x34  /**< GPIF Waveform */

#define FGV_MIN                 FGV_EP2PF

#define FGV_MAX                 FGV_GPIFWF

/**

 * \brief Hook standard interrupt vector.

 *

 * \param[in] vector_number is from the SV_<foo> list above.

 * \param[in] addr is the address of the interrupt service routine.

 */

void hook_sv (unsigned char vector_number, unsigned short addr);

/**

 * \brief Hook usb interrupt vector.

 *

 * \param[in] vector_number is from the UV_<foo> list above.

 * \param[in] addr is the address of the interrupt service routine.

 */

void hook_uv (unsigned char vector_number, unsigned short addr);

/**

 * \brief Hook fifo/gpif interrupt vector.

 *

 * \param[in] vector_number is from the FGV_<foo> list above.

 * \param[in] addr is the address of the interrupt service routine.

 */

void hook_fgv (unsigned char vector_number, unsigned short addr);

/**

 * One time call to enable autovectoring for both USB and FIFO/GPIF

 */

void setup_autovectors (void);

/**

 * Makro to clear the pending USB interrrupt

 *

 * \warning Must be called in each usb interrupt handler

 */

#define clear_usb_irq()                 \

        EXIF &= ~bmEXIF_USBINT;         \

        INT2CLR = 0

/**

 * Makro to clear the pending FIFO/GPIF interrupt

 *

 * \warning Must be called in each fifo/gpif interrupt handler

 */

#define clear_fifo_gpif_irq()           \

        EXIF &= ~bmEXIF_IE4;            \

        INT4CLR = 0

#endif /* _ISR_H_ */