1 /*- 2 * SPDX-License-Identifier: MIT OR GPL-2.0-only 3 * 4 * Copyright © 2015 Julien Grall 5 * Copyright © 2021 Elliott Mitchell 6 * 7 * This file may be distributed separately from the Linux kernel, or 8 * incorporated into other software packages, subject to the following license: 9 * 10 * Permission is hereby granted, free of charge, to any person obtaining a copy 11 * of this source file (the "Software"), to deal in the Software without 12 * restriction, including without limitation the rights to use, copy, modify, 13 * merge, publish, distribute, sublicense, and/or sell copies of the Software, 14 * and to permit persons to whom the Software is furnished to do so, subject to 15 * the following conditions: 16 * 17 * The above copyright notice and this permission notice shall be included in 18 * all copies or substantial portions of the Software. 19 * 20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 23 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 24 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 25 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 26 * IN THE SOFTWARE. 27 */ 28 29 #ifndef _MACHINE__XEN_ARCH_INTR_H_ 30 #define _MACHINE__XEN_ARCH_INTR_H_ 31 32 #include <x86/intr_machdep.h> 33 #include <x86/apicvar.h> 34 35 typedef struct { 36 struct intsrc intsrc; /* @TOP -> *xen_arch_isrc */ 37 u_int vector; /* Global isrc vector number */ 38 } xen_arch_isrc_t; 39 40 #include <dev/xen/bus/intr-internal.h> 41 42 /******************************* ARCH wrappers *******************************/ 43 44 extern void xen_arch_intr_init(void); 45 46 extern struct xenisrc *xen_arch_intr_alloc(void); 47 extern void xen_arch_intr_release(struct xenisrc *isrc); 48 49 static inline u_int 50 xen_arch_intr_next_cpu(struct xenisrc *isrc) 51 { 52 53 return (apic_cpuid(intr_next_cpu(0))); 54 } 55 56 static inline u_long 57 xen_arch_intr_execute_handlers(struct xenisrc *isrc, struct trapframe *frame) 58 { 59 60 intr_execute_handlers(&isrc->xi_arch.intsrc, frame); 61 return (0); 62 } 63 64 static inline int 65 xen_arch_intr_add_handler(const char *name, driver_filter_t filter, 66 driver_intr_t handler, void *arg, enum intr_type flags, 67 struct xenisrc *isrc, void **cookiep) 68 { 69 70 return (intr_add_handler(name, isrc->xi_arch.vector, filter, handler, 71 arg, flags, cookiep, 0)); 72 } 73 74 static inline int 75 xen_arch_intr_describe(struct xenisrc *isrc, void *cookie, const char *descr) 76 { 77 78 return (intr_describe(isrc->xi_arch.vector, cookie, descr)); 79 } 80 81 static inline int 82 xen_arch_intr_remove_handler(struct xenisrc *isrc, void *cookie) 83 { 84 85 return (intr_remove_handler(cookie)); 86 } 87 88 static inline int 89 xen_arch_intr_event_bind(struct xenisrc *isrc, u_int cpu) 90 { 91 92 return (intr_event_bind(isrc->xi_arch.intsrc.is_event, cpu)); 93 } 94 95 #endif /* _MACHINE__XEN_ARCH_INTR_H_ */ 96