pintr.c revision 1.16
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 1.16 2020/05/15 07:42:58 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 #ifdef __HAVE_PCI_MSI_MSIX 130 #include <x86/pci/msipic.h> 131 #endif 132 133 #include "acpica.h" 134 #include "ioapic.h" 135 #include "opt_mpbios.h" 136 137 #if NIOAPIC > 0 138 /* XXX: todo - compat with lapic.c and XEN for x2apic */ 139 bool x2apic_mode __read_mostly = false; 140 /* for x86/i8259.c */ 141 struct intrstub legacy_stubs[NUM_LEGACY_IRQS] = {{0,0,0}}; 142 /* for x86/ioapic.c */ 143 struct intrstub ioapic_edge_stubs[MAX_INTR_SOURCES] = {{0,0,0}}; 144 struct intrstub ioapic_level_stubs[MAX_INTR_SOURCES] = {{0,0,0}}; 145 struct intrstub x2apic_edge_stubs[MAX_INTR_SOURCES] = {{0,0,0}}; 146 struct intrstub x2apic_level_stubs[MAX_INTR_SOURCES] = {{0,0,0}}; 147 #include <machine/i82093var.h> 148 #endif /* NIOAPIC */ 149 150 // XXX NR_EVENT_CHANNELS is 2048, use some sparse structure? 151 short irq2port[NR_EVENT_CHANNELS] = {0}; /* actually port + 1, so that 0 is invaid */ 152 153 #if NACPICA > 0 154 #include <machine/mpconfig.h> 155 #include <machine/mpacpi.h> 156 #endif 157 #ifdef MPBIOS 158 #include <machine/mpbiosvar.h> 159 #endif 160 161 #if NPCI > 0 162 #include <dev/pci/ppbreg.h> 163 #endif 164 165 #if defined(DOM0OPS) || NPCI > 0 166 /* 167 * This function doesn't "allocate" anything. It merely translates our 168 * understanding of PIC to the XEN 'gsi' namespace. In the case of 169 * MSIs, pirq == irq. In the case of everything else, the hypervisor 170 * doesn't really care, so we just use the native conventions that 171 * have been setup during boot by mpbios.c/mpacpi.c 172 */ 173 int 174 xen_pic_to_gsi(struct pic *pic, int pin) 175 { 176 struct physdev_map_pirq map_irq; 177 int ret; 178 int gsi; 179 180 KASSERT(pic != NULL); 181 182 /* 183 * We assume that mpbios/mpacpi have done the right thing. 184 * If so, legacy_irq should identity map correctly to gsi. 185 */ 186 gsi = pic->pic_vecbase + pin; 187 KASSERT(gsi < NR_EVENT_CHANNELS); 188 189 switch (pic->pic_type) { 190 case PIC_I8259: 191 KASSERT(gsi < 16); 192 /* FALLTHROUGH */ 193 case PIC_IOAPIC: 194 { 195 KASSERT(gsi < 255); 196 197 if (irq2port[gsi] != 0) { 198 /* Already mapped the shared interrupt */ 199 break; 200 } 201 202 memset(&map_irq, 0, sizeof(map_irq)); 203 map_irq.domid = DOMID_SELF; 204 map_irq.type = MAP_PIRQ_TYPE_GSI; 205 map_irq.index = pin; 206 map_irq.pirq = gsi; 207 ret = HYPERVISOR_physdev_op(PHYSDEVOP_map_pirq, &map_irq); 208 if (ret != 0) 209 panic("physdev_op(PHYSDEVOP_map_pirq) GSI fail %d", 210 ret); 211 break; 212 } 213 case PIC_MSI: 214 case PIC_MSIX: 215 #ifdef __HAVE_PCI_MSI_MSIX 216 { 217 const struct msipic_pci_info *i = msipic_get_pci_info(pic); 218 219 memset(&map_irq, 0, sizeof(map_irq)); 220 map_irq.domid = DOMID_SELF; 221 map_irq.type = MAP_PIRQ_TYPE_MSI_SEG; 222 map_irq.index = -1; 223 map_irq.pirq = -1; 224 map_irq.bus = i->mp_bus; 225 map_irq.devfn = (i->mp_dev << 3) | i->mp_fun; 226 KASSERT(i->mp_veccnt > 0); 227 map_irq.entry_nr = i->mp_veccnt; 228 if (pic->pic_type == PIC_MSI && i->mp_veccnt > 1) { 229 map_irq.type = MAP_PIRQ_TYPE_MULTI_MSI; 230 } else if (pic->pic_type == PIC_MSIX) { 231 map_irq.table_base = i->mp_table_base; 232 } 233 ret = HYPERVISOR_physdev_op(PHYSDEVOP_map_pirq, &map_irq); 234 if (ret != 0) 235 panic("physdev_op(PHYSDEVOP_map_pirq) MSI fail %d", 236 ret); 237 KASSERT(map_irq.entry_nr == i->mp_veccnt); 238 gsi = map_irq.pirq; 239 break; 240 } 241 #endif 242 default: 243 panic("unknown pic_type %d", pic->pic_type); 244 break; 245 } 246 247 return gsi; 248 } 249 250 251 #endif /* defined(DOM0OPS) || NPCI > 0 */ 252
Indexes created Thu Sep 25 16:09:42 GMT 2025