1 /* $NetBSD: openpic_common.c,v 1.7 2013/09/19 23:28:52 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2007 Michael Lorenz 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: openpic_common.c,v 1.7 2013/09/19 23:28:52 christos Exp $"); 31 32 #include "opt_openpic.h" 33 #include "opt_interrupt.h" 34 35 #include <sys/param.h> 36 #include <sys/kernel.h> 37 38 #include <uvm/uvm_extern.h> 39 40 #include <machine/pio.h> 41 #include <powerpc/openpic.h> 42 43 #include <powerpc/pic/picvar.h> 44 45 volatile unsigned char *openpic_base; 46 47 void 48 opic_finish_setup(struct pic_ops *pic) 49 { 50 uint32_t cpumask = 0; 51 int i; 52 53 #ifdef OPENPIC_DISTRIBUTE 54 for (i = 0; i < ncpu; i++) 55 cpumask |= (1 << cpu_info[i].ci_index); 56 #else 57 cpumask = 1; 58 #endif 59 for (i = 0; i < pic->pic_numintrs; i++) { 60 /* send all interrupts to all active CPUs */ 61 openpic_write(OPENPIC_IDEST(i), cpumask); 62 } 63 } 64 65 void 66 openpic_set_priority(int cpu, int pri) 67 { 68 u_int x; 69 70 x = openpic_read(OPENPIC_CPU_PRIORITY(cpu)); 71 x &= ~OPENPIC_CPU_PRIORITY_MASK; 72 x |= pri; 73 openpic_write(OPENPIC_CPU_PRIORITY(cpu), x); 74 } 75 76 int 77 opic_get_irq(struct pic_ops *pic, int mode) 78 { 79 80 return openpic_read_irq(curcpu()->ci_index); 81 } 82 83 void 84 opic_ack_irq(struct pic_ops *pic, int irq) 85 { 86 87 openpic_eoi(curcpu()->ci_index); 88 } 89