pintr.c revision 1.9
1/* NetBSD: intr.c,v 1.15 2004/04/10 14:49:55 kochi Exp */ 2 3/* 4 * Copyright 2002 (c) Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Frank van der Linden for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38/*- 39 * Copyright (c) 1991 The Regents of the University of California. 40 * All rights reserved. 41 * 42 * This code is derived from software contributed to Berkeley by 43 * William Jolitz. 44 * 45 * Redistribution and use in source and binary forms, with or without 46 * modification, are permitted provided that the following conditions 47 * are met: 48 * 1. Redistributions of source code must retain the above copyright 49 * notice, this list of conditions and the following disclaimer. 50 * 2. Redistributions in binary form must reproduce the above copyright 51 * notice, this list of conditions and the following disclaimer in the 52 * documentation and/or other materials provided with the distribution. 53 * 3. Neither the name of the University nor the names of its contributors 54 * may be used to endorse or promote products derived from this software 55 * without specific prior written permission. 56 * 57 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 58 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 59 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 60 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 61 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 62 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 63 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 64 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 65 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 66 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 67 * SUCH DAMAGE. 68 * 69 * @(#)isa.c 7.2 (Berkeley) 5/13/91 70 */ 71/*- 72 * Copyright (c) 1993, 1994 Charles Hannum. 73 * 74 * Redistribution and use in source and binary forms, with or without 75 * modification, are permitted provided that the following conditions 76 * are met: 77 * 1. Redistributions of source code must retain the above copyright 78 * notice, this list of conditions and the following disclaimer. 79 * 2. Redistributions in binary form must reproduce the above copyright 80 * notice, this list of conditions and the following disclaimer in the 81 * documentation and/or other materials provided with the distribution. 82 * 3. All advertising materials mentioning features or use of this software 83 * must display the following acknowledgement: 84 * This product includes software developed by the University of 85 * California, Berkeley and its contributors. 86 * 4. Neither the name of the University nor the names of its contributors 87 * may be used to endorse or promote products derived from this software 88 * without specific prior written permission. 89 * 90 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 91 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 92 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 93 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 94 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 95 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 96 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 97 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 98 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 99 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 100 * SUCH DAMAGE. 101 * 102 * @(#)isa.c 7.2 (Berkeley) 5/13/91 103 */ 104 105#include <sys/cdefs.h> 106__KERNEL_RCSID(0, "$NetBSD: pintr.c,v 1.9 2018/10/10 02:34:08 cherry Exp $"); 107 108#include "opt_multiprocessor.h" 109#include "opt_xen.h" 110#include "isa.h" 111#include "pci.h" 112 113#include <sys/param.h> 114#include <sys/systm.h> 115#include <sys/kernel.h> 116#include <sys/syslog.h> 117#include <sys/device.h> 118#include <sys/malloc.h> 119#include <sys/proc.h> 120#include <sys/errno.h> 121#include <sys/cpu.h> 122 123#include <uvm/uvm_extern.h> 124 125#include <machine/i8259.h> 126#include <machine/pio.h> 127#include <xen/evtchn.h> 128#include <xen/intr.h> 129 130#include "acpica.h" 131#include "ioapic.h" 132#include "opt_mpbios.h" 133 134#if NIOAPIC > 0 135/* XXX: todo - compat with lapic.c and XEN for x2apic */ 136bool x2apic_mode __read_mostly = false; 137/* for x86/i8259.c */ 138struct intrstub legacy_stubs[NUM_LEGACY_IRQS] = {{0,0}}; 139/* for x86/ioapic.c */ 140struct intrstub ioapic_edge_stubs[MAX_INTR_SOURCES] = {{0,0}}; 141struct intrstub ioapic_level_stubs[MAX_INTR_SOURCES] = {{0,0}}; 142struct intrstub x2apic_edge_stubs[MAX_INTR_SOURCES] = {{0,0}}; 143struct intrstub x2apic_level_stubs[MAX_INTR_SOURCES] = {{0,0}}; 144#include <machine/i82093var.h> 145int irq2port[NR_EVENT_CHANNELS] = {0}; /* actually port + 1, so that 0 is invaid */ 146static int irq2vect[256] = {0}; 147static int vect2irq[256] = {0}; 148#endif /* NIOAPIC */ 149#if NACPICA > 0 150#include <machine/mpconfig.h> 151#include <machine/mpacpi.h> 152#endif 153#ifdef MPBIOS 154#include <machine/mpbiosvar.h> 155#endif 156 157#if NPCI > 0 158#include <dev/pci/ppbreg.h> 159#endif 160 161#if defined(DOM0OPS) || NPCI > 0 162int 163xen_vec_alloc(int gsi) 164{ 165 physdev_op_t op; 166 167 KASSERT(gsi < 255); 168 169 if (irq2port[gsi] == 0) { 170 op.cmd = PHYSDEVOP_ASSIGN_VECTOR; 171 op.u.irq_op.irq = gsi; 172 if (HYPERVISOR_physdev_op(&op) < 0) { 173 panic("PHYSDEVOP_ASSIGN_VECTOR gsi %d", gsi); 174 } 175 KASSERT(irq2vect[gsi] == 0 || 176 irq2vect[gsi] == op.u.irq_op.vector); 177 irq2vect[gsi] = op.u.irq_op.vector; 178 KASSERT(vect2irq[op.u.irq_op.vector] == 0 || 179 vect2irq[op.u.irq_op.vector] == gsi); 180 vect2irq[op.u.irq_op.vector] = gsi; 181 } 182 183 return (irq2vect[gsi]); 184} 185 186/* 187 * This function doesn't "allocate" anything. It merely translates our 188 * understanding of PIC to the XEN 'gsi' namespace. In the case of 189 * MSIs, pirq == irq. In the case of everything else, the hypervisor 190 * doesn't really care, so we just use the native conventions that 191 * have been setup during boot by mpbios.c/mpacpi.c 192 */ 193int 194xen_pic_to_gsi(struct pic *pic, int pin) 195{ 196 int gsi; 197 198 KASSERT(pic != NULL); 199 200 /* 201 * We assume that mpbios/mpacpi have done the right thing. 202 * If so, legacy_irq should identity map correctly to gsi. 203 */ 204 gsi = pic->pic_vecbase + pin; 205 206 switch (pic->pic_type) { 207 case PIC_I8259: 208 KASSERT(gsi < 16); 209 break; 210 case PIC_IOAPIC: 211 break; 212 default: /* XXX: MSI Support */ 213 panic("XXX: MSI(X) Support"); 214 break; 215 } 216 217 KASSERT(gsi < 255); 218 return gsi; 219} 220 221 222#endif /* defined(DOM0OPS) || NPCI > 0 */ 223