pintr.c revision 1.11
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 1.11 2020/04/07 07:43:33 jdolecek 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/proc.h> 119#include <sys/errno.h> 120#include <sys/cpu.h> 121 122#include <uvm/uvm_extern.h> 123 124#include <machine/i8259.h> 125#include <machine/pio.h> 126#include <xen/evtchn.h> 127#include <xen/intr.h> 128 129#include "acpica.h" 130#include "ioapic.h" 131#include "opt_mpbios.h" 132 133#if NIOAPIC > 0 134/* XXX: todo - compat with lapic.c and XEN for x2apic */ 135bool x2apic_mode __read_mostly = false; 136/* for x86/i8259.c */ 137struct intrstub legacy_stubs[NUM_LEGACY_IRQS] = {{0,0,0}}; 138/* for x86/ioapic.c */ 139struct intrstub ioapic_edge_stubs[MAX_INTR_SOURCES] = {{0,0,0}}; 140struct intrstub ioapic_level_stubs[MAX_INTR_SOURCES] = {{0,0,0}}; 141struct intrstub x2apic_edge_stubs[MAX_INTR_SOURCES] = {{0,0,0}}; 142struct intrstub x2apic_level_stubs[MAX_INTR_SOURCES] = {{0,0,0}}; 143#include <machine/i82093var.h> 144#endif /* NIOAPIC */ 145 146int irq2port[NR_EVENT_CHANNELS] = {0}; /* actually port + 1, so that 0 is invaid */ 147static int irq2vect[256] = {0}; 148static int vect2irq[256] = {0}; 149 150#if NACPICA > 0 151#include <machine/mpconfig.h> 152#include <machine/mpacpi.h> 153#endif 154#ifdef MPBIOS 155#include <machine/mpbiosvar.h> 156#endif 157 158#if NPCI > 0 159#include <dev/pci/ppbreg.h> 160#endif 161 162#if defined(DOM0OPS) || NPCI > 0 163int 164xen_vec_alloc(int gsi) 165{ 166 physdev_op_t op; 167 168 KASSERT(gsi < 255); 169 170 if (irq2port[gsi] == 0) { 171 op.cmd = PHYSDEVOP_ASSIGN_VECTOR; 172 op.u.irq_op.irq = gsi; 173 if (HYPERVISOR_physdev_op(&op) < 0) { 174 panic("PHYSDEVOP_ASSIGN_VECTOR gsi %d", gsi); 175 } 176 KASSERT(irq2vect[gsi] == 0 || 177 irq2vect[gsi] == op.u.irq_op.vector); 178 irq2vect[gsi] = op.u.irq_op.vector; 179 KASSERT(vect2irq[op.u.irq_op.vector] == 0 || 180 vect2irq[op.u.irq_op.vector] == gsi); 181 vect2irq[op.u.irq_op.vector] = gsi; 182 } 183 184 return (irq2vect[gsi]); 185} 186 187/* 188 * This function doesn't "allocate" anything. It merely translates our 189 * understanding of PIC to the XEN 'gsi' namespace. In the case of 190 * MSIs, pirq == irq. In the case of everything else, the hypervisor 191 * doesn't really care, so we just use the native conventions that 192 * have been setup during boot by mpbios.c/mpacpi.c 193 */ 194int 195xen_pic_to_gsi(struct pic *pic, int pin) 196{ 197 int gsi; 198 199 KASSERT(pic != NULL); 200 201 /* 202 * We assume that mpbios/mpacpi have done the right thing. 203 * If so, legacy_irq should identity map correctly to gsi. 204 */ 205 gsi = pic->pic_vecbase + pin; 206 207 switch (pic->pic_type) { 208 case PIC_I8259: 209 KASSERT(gsi < 16); 210 break; 211 case PIC_IOAPIC: 212 break; 213 default: /* XXX: MSI Support */ 214 panic("XXX: MSI(X) Support"); 215 break; 216 } 217 218 KASSERT(gsi < 255); 219 return gsi; 220} 221 222 223#endif /* defined(DOM0OPS) || NPCI > 0 */ 224