1 /* $NetBSD: intr.h,v 1.36 2015/04/27 07:03:58 knakahara Exp $ */ 2 /* NetBSD intr.h,v 1.15 2004/10/31 10:39:34 yamt Exp */ 3 4 /*- 5 * Copyright (c) 1998, 2001 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Charles M. Hannum, and by Jason R. Thorpe. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #ifndef _XEN_INTR_H_ 34 #define _XEN_INTR_H_ 35 36 #include <machine/intrdefs.h> 37 38 #ifndef _LOCORE 39 #include <xen/xen.h> 40 #include <xen/hypervisor.h> 41 #include <machine/pic.h> 42 #include <sys/evcnt.h> 43 44 #include "opt_xen.h" 45 46 47 struct cpu_info; 48 /* 49 * Struct describing an event channel. 50 */ 51 52 struct evtsource { 53 int ev_maxlevel; /* max. IPL for this source */ 54 uint32_t ev_imask; /* interrupt mask */ 55 struct intrhand *ev_handlers; /* handler chain */ 56 struct evcnt ev_evcnt; /* interrupt counter */ 57 struct cpu_info *ev_cpu; /* cpu on which this event is bound */ 58 char ev_evname[32]; /* event counter name */ 59 }; 60 61 /* 62 * Structure describing an interrupt level. struct cpu_info has an array of 63 * IPL_MAX of theses. The index in the array is equal to the stub number of 64 * the stubcode as present in vector.s 65 */ 66 67 struct intrstub { 68 #if 0 69 void *ist_entry; 70 #endif 71 void *ist_recurse; 72 void *ist_resume; 73 }; 74 75 /* for x86 compatibility */ 76 extern struct intrstub i8259_stubs[]; 77 extern struct intrstub ioapic_edge_stubs[]; 78 extern struct intrstub ioapic_level_stubs[]; 79 80 struct iplsource { 81 struct intrhand *ipl_handlers; /* handler chain */ 82 void *ipl_recurse; /* entry for spllower */ 83 void *ipl_resume; /* entry for doreti */ 84 struct lwp *ipl_lwp; 85 u_long ipl_evt_mask1; /* pending events for this IPL */ 86 u_long ipl_evt_mask2[NR_EVENT_CHANNELS]; 87 }; 88 89 90 91 /* 92 * Interrupt handler chains. These are linked in both the evtsource and 93 * the iplsource. 94 * The handler is called with its (single) argument. 95 */ 96 97 struct intrhand { 98 int (*ih_fun)(void *); 99 void *ih_arg; 100 int ih_level; 101 int (*ih_realfun)(void *); 102 void *ih_realarg; 103 struct intrhand *ih_ipl_next; 104 struct intrhand *ih_evt_next; 105 struct cpu_info *ih_cpu; 106 }; 107 108 struct xen_intr_handle { 109 int pirq; /* also contains the APIC_INT_* flags if NIOAPIC > 0 */ 110 int evtch; 111 }; 112 113 extern struct intrstub xenev_stubs[]; 114 115 #define IUNMASK(ci,level) (ci)->ci_iunmask[(level)] 116 117 extern void Xspllower(int); 118 119 int splraise(int); 120 void spllower(int); 121 122 #define SPL_ASSERT_BELOW(x) KDASSERT(curcpu()->ci_ilevel < (x)) 123 124 /* 125 * Miscellaneous 126 */ 127 #define spl0() spllower(IPL_NONE) 128 #define splx(x) spllower(x) 129 130 typedef uint8_t ipl_t; 131 typedef struct { 132 ipl_t _ipl; 133 } ipl_cookie_t; 134 135 static inline ipl_cookie_t 136 makeiplcookie(ipl_t ipl) 137 { 138 139 return (ipl_cookie_t){._ipl = ipl}; 140 } 141 142 static inline int 143 splraiseipl(ipl_cookie_t icookie) 144 { 145 146 return splraise(icookie._ipl); 147 } 148 149 #include <sys/spl.h> 150 151 /* 152 * Stub declarations. 153 */ 154 155 struct pcibus_attach_args; 156 157 typedef int intr_handle_t; 158 159 #ifdef MULTIPROCESSOR 160 int intr_biglock_wrapper(void *); 161 #endif 162 163 void intr_default_setup(void); 164 int x86_nmi(void); 165 166 void *intr_establish(int, struct pic *, int, int, int, int (*)(void *), void *, bool); 167 void intr_disestablish(struct intrhand *); 168 const char *intr_string(intr_handle_t); 169 void cpu_intr_init(struct cpu_info *); 170 int xen_intr_map(int *, int); 171 #ifdef INTRDEBUG 172 void intr_printconfig(void); 173 #endif 174 int intr_find_mpmapping(int, int, struct xen_intr_handle *); 175 struct pic *intr_findpic(int); 176 void intr_add_pcibus(struct pcibus_attach_args *); 177 178 #ifdef MULTIPROCESSOR 179 void xen_ipi_init(void); 180 int xen_send_ipi(struct cpu_info *, uint32_t); 181 void xen_broadcast_ipi(uint32_t); 182 #else 183 #define xen_ipi_init(_1) ((void) 0) /* nothing */ 184 #define xen_send_ipi(_i1, _i2) (0) /* nothing */ 185 #define xen_broadcast_ipi(_i1) ((void) 0) /* nothing */ 186 #endif /* MULTIPROCESSOR */ 187 188 #endif /* !_LOCORE */ 189 190 #endif /* _XEN_INTR_H_ */ 191