pintr.c revision 1.1
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 1.1 2017/11/04 09:22:16 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 */ 136 bool x2apic_mode __read_mostly = false; 137 /* for x86/i8259.c */ 138 struct intrstub i8259_stubs[NUM_LEGACY_IRQS] = {{0,0}}; 139 /* for x86/ioapic.c */ 140 struct intrstub ioapic_edge_stubs[MAX_INTR_SOURCES] = {{0,0}}; 141 struct intrstub ioapic_level_stubs[MAX_INTR_SOURCES] = {{0,0}}; 142 struct intrstub x2apic_edge_stubs[MAX_INTR_SOURCES] = {{0,0}}; 143 struct intrstub x2apic_level_stubs[MAX_INTR_SOURCES] = {{0,0}}; 144 #include <machine/i82093var.h> 145 int irq2port[NR_EVENT_CHANNELS] = {0}; 146 int irq2vect[256] = {0}; 147 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 > 0 162 int 163 xen_pirq_alloc(intr_handle_t *pirq, int type) 164 { 165 int irq = *pirq; 166 #if NIOAPIC > 0 167 extern struct cpu_info phycpu_info_primary; /* XXX */ 168 /* 169 * The hypervisor has already allocated vectors and IRQs for the 170 * devices. Reusing the same IRQ doesn't work because as we bind 171 * them for each devices, we can't then change the route entry 172 * of the next device if this one used this IRQ. The easiest is 173 * to allocate IRQs top-down, starting with a high number. 174 * 250 and 230 have been tried, but got rejected by Xen. 175 * 176 * Xen 3.5 also rejects 200. Try out all values until Xen accepts 177 * or none is available. 178 */ 179 static int xen_next_irq = 200; 180 struct ioapic_softc *ioapic = ioapic_find(APIC_IRQ_APIC(*pirq)); 181 struct pic *pic = &ioapic->sc_pic; 182 int pin = APIC_IRQ_PIN(*pirq); 183 physdev_op_t op; 184 185 if (*pirq & APIC_INT_VIA_APIC) { 186 irq = vect2irq[ioapic->sc_pins[pin].ip_vector]; 187 if (ioapic->sc_pins[pin].ip_vector == 0 || irq == 0) { 188 /* allocate IRQ */ 189 irq = APIC_IRQ_LEGACY_IRQ(*pirq); 190 if (irq <= 0 || irq > 15) 191 irq = xen_next_irq--; 192 retry: 193 /* allocate vector and route interrupt */ 194 op.cmd = PHYSDEVOP_ASSIGN_VECTOR; 195 op.u.irq_op.irq = irq; 196 if (HYPERVISOR_physdev_op(&op) < 0) { 197 irq = xen_next_irq--; 198 if (xen_next_irq == 15) 199 panic("PHYSDEVOP_ASSIGN_VECTOR irq %d", irq); 200 goto retry; 201 } 202 irq2vect[irq] = op.u.irq_op.vector; 203 vect2irq[op.u.irq_op.vector] = irq; 204 pic->pic_addroute(pic, &phycpu_info_primary, pin, 205 op.u.irq_op.vector, type); 206 } 207 *pirq &= ~0xff; 208 *pirq |= irq; 209 } 210 #endif /* NIOAPIC */ 211 return irq2port[irq]; 212 } 213 #endif /* defined(DOM0OPS) || NPCI > 0 */ 214
Indexes created Fri Sep 26 20:09:58 GMT 2025