| 1 | /* $NetBSD: intr.h,v 1.39 2016/10/17 18:23:50 jdolecek 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_establish_xname(int, struct pic *, int, int, int, int (*)(void *), void *, |
| 168 | bool, const char *); |
| 169 | void intr_disestablish(struct intrhand *); |
| 170 | const char *intr_string(intr_handle_t); |
| 171 | void cpu_intr_init(struct cpu_info *); |
| 172 | int xen_intr_map(int *, int); |
| 173 | #ifdef INTRDEBUG |
| 174 | void intr_printconfig(void); |
| 175 | #endif |
| 176 | int intr_find_mpmapping(int, int, struct xen_intr_handle *); |
| 177 | struct pic *intr_findpic(int); |
| 178 | void intr_add_pcibus(struct pcibus_attach_args *); |
| 179 | |
| 180 | #ifdef MULTIPROCESSOR |
| 181 | void xen_ipi_init(void); |
| 182 | int xen_send_ipi(struct cpu_info *, uint32_t); |
| 183 | void xen_broadcast_ipi(uint32_t); |
| 184 | #else |
| 185 | #define xen_ipi_init(_1) ((void) 0) /* nothing */ |
| 186 | #define xen_send_ipi(_i1, _i2) (0) /* nothing */ |
| 187 | #define xen_broadcast_ipi(_i1) ((void) 0) /* nothing */ |
| 188 | #endif /* MULTIPROCESSOR */ |
| 189 | #endif /* !_LOCORE */ |
| 190 | |
| 191 | #endif /* _XEN_INTR_H_ */ |
| 192 | |