1 /* 2 * (C) Copyright 2007 Michal Simek 3 * 4 * Michal SIMEK <monstr@monstr.cz> 5 * 6 * See file CREDITS for list of people who contributed to this 7 * project. 8 * 9 * This program is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU General Public License as 11 * published by the Free Software Foundation; either version 2 of 12 * the License, or (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 22 * MA 02111-1307 USA 23 */ 24 25 typedef volatile struct microblaze_intc_t { 26 int isr; /* interrupt status register */ 27 int ipr; /* interrupt pending register */ 28 int ier; /* interrupt enable register */ 29 int iar; /* interrupt acknowledge register */ 30 int sie; /* set interrupt enable bits */ 31 int cie; /* clear interrupt enable bits */ 32 int ivr; /* interrupt vector register */ 33 int mer; /* master enable register */ 34 } microblaze_intc_t; 35 36 struct irq_action { 37 interrupt_handler_t *handler; /* pointer to interrupt rutine */ 38 void *arg; 39 int count; /* number of interrupt */ 40 }; 41 42 /** 43 * Register and unregister interrupt handler rutines 44 * 45 * @param irq IRQ number 46 * @param hdlr Interrupt handler rutine 47 * @param arg Pointer to argument which is passed to int. handler rutine 48 * @return 0 if registration pass, 1 if unregistration pass, 49 * or an error code < 0 otherwise 50 */ 51 int install_interrupt_handler(int irq, interrupt_handler_t *hdlr, 52 void *arg); 53 54 int interrupts_init(void); 55 56