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Diffstat (limited to 'firmware/fx2/common/isr.h')
| -rw-r--r-- | firmware/fx2/common/isr.h | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/firmware/fx2/common/isr.h b/firmware/fx2/common/isr.h new file mode 100644 index 000000000..856532890 --- /dev/null +++ b/firmware/fx2/common/isr.h @@ -0,0 +1,172 @@ +/* -*- 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_ + +/* + * ---------------------------------------------------------------- + * 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. + */ + +/* + * Standard Vector numbers + */ + +#define SV_INT_0 0x03 +#define SV_TIMER_0 0x0b +#define SV_INT_1 0x13 +#define SV_TIMER_1 0x1b +#define SV_SERIAL_0 0x23 +#define SV_TIMER_2 0x2b +#define SV_RESUME 0x33 +#define SV_SERIAL_1 0x3b +#define SV_INT_2 0x43 // (INT_2) points at USB autovector +#define SV_I2C 0x4b +#define SV_INT_4 0x53 // (INT_4) points at FIFO/GPIF autovector +#define SV_INT_5 0x5b +#define SV_INT_6 0x63 + +#define SV_MIN SV_INT_0 +#define SV_MAX SV_INT_6 + +/* + * USB Auto Vector numbers + */ + +#define UV_SUDAV 0x00 +#define UV_SOF 0x04 +#define UV_SUTOK 0x08 +#define UV_SUSPEND 0x0c +#define UV_USBRESET 0x10 +#define UV_HIGHSPEED 0x14 +#define UV_EP0ACK 0x18 +#define UV_SPARE_1C 0x1c +#define UV_EP0IN 0x20 +#define UV_EP0OUT 0x24 +#define UV_EP1IN 0x28 +#define UV_EP1OUT 0x2c +#define UV_EP2 0x30 +#define UV_EP4 0x34 +#define UV_EP6 0x38 +#define UV_EP8 0x3c +#define UV_IBN 0x40 +#define UV_SPARE_44 0x44 +#define UV_EP0PINGNAK 0x48 +#define UV_EP1PINGNAK 0x4c +#define UV_EP2PINGNAK 0x50 +#define UV_EP4PINGNAK 0x54 +#define UV_EP6PINGNAK 0x58 +#define UV_EP8PINGNAK 0x5c +#define UV_ERRLIMIT 0x60 +#define UV_SPARE_64 0x64 +#define UV_SPARE_68 0x68 +#define UV_SPARE_6C 0x6c +#define UV_EP2ISOERR 0x70 +#define UV_EP4ISOERR 0x74 +#define UV_EP6ISOERR 0x78 +#define UV_EP8ISOERR 0x7c + +#define UV_MIN UV_SUDAV +#define UV_MAX UV_EP8ISOERR + +/* + * FIFO/GPIF Auto Vector numbers + */ + +#define FGV_EP2PF 0x00 +#define FGV_EP4PF 0x04 +#define FGV_EP6PF 0x08 +#define FGV_EP8PF 0x0c +#define FGV_EP2EF 0x10 +#define FGV_EP4EF 0x14 +#define FGV_EP6EF 0x18 +#define FGV_EP8EF 0x1c +#define FGV_EP2FF 0x20 +#define FGV_EP4FF 0x24 +#define FGV_EP6FF 0x28 +#define FGV_EP8FF 0x2c +#define FGV_GPIFDONE 0x30 +#define FGV_GPIFWF 0x34 + +#define FGV_MIN FGV_EP2PF +#define FGV_MAX FGV_GPIFWF + + +/* + * Hook standard interrupt vector. + * + * vector_number is from the SV_<foo> list above. + * addr is the address of the interrupt service routine. + */ +void hook_sv (unsigned char vector_number, unsigned short addr); + +/* + * Hook usb interrupt vector. + * + * vector_number is from the UV_<foo> list above. + * addr is the address of the interrupt service routine. + */ +void hook_uv (unsigned char vector_number, unsigned short addr); + +/* + * Hook fifo/gpif interrupt vector. + * + * vector_number is from the FGV_<foo> list above. + * 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); + + +/* + * Must be called in each usb interrupt handler + */ +#define clear_usb_irq() \ + EXIF &= ~bmEXIF_USBINT; \ + INT2CLR = 0 + +/* + * Must be calledin each fifo/gpif interrupt handler + */ +#define clear_fifo_gpif_irq() \ + EXIF &= ~bmEXIF_IE4; \ + INT4CLR = 0 + +#endif /* _ISR_H_ */ |