Annotation of src/sys/arch/xen/include/intr.h, Revision 1.31.10.1
1.31.10.1! cherry 1: /* $NetBSD: intr.h,v 1.31 2009/07/29 12:02:06 cegger Exp $ */
1.3 bouyer 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: */
1.1 cl 32:
33: #ifndef _XEN_INTR_H_
34: #define _XEN_INTR_H_
35:
1.31.10.1! cherry 36: #ifndef _LOCORE
! 37: #include <machine/cpu.h>
! 38: #include <machine/pic.h>
1.22 bouyer 39: #include <machine/intrdefs.h>
1.1 cl 40:
1.31.10.1! cherry 41: #include <sys/evcnt.h>
! 42: #include <sys/types.h>
! 43: #include <sys/simplelock.h>
! 44:
1.19 bouyer 45: #include <xen/xen.h>
46: #include <xen/hypervisor.h>
47: #include <xen/evtchn.h>
1.3 bouyer 48:
1.10 bouyer 49: #include "opt_xen.h"
50:
1.3 bouyer 51: /*
52: * Struct describing an event channel.
53: */
54:
55: struct evtsource {
56: int ev_maxlevel; /* max. IPL for this source */
1.24 cegger 57: uint32_t ev_imask; /* interrupt mask */
1.3 bouyer 58: struct intrhand *ev_handlers; /* handler chain */
59: struct evcnt ev_evcnt; /* interrupt counter */
60: char ev_evname[32]; /* event counter name */
1.31.10.1! cherry 61: struct simplelock ev_lock; /* protects this structure */
! 62:
! 63: /*
! 64: * XXX: The lock is quite coursegrained ( for the entire
! 65: * handler list ), but contention is expected to be low. See
! 66: * how this performs and revisit.
! 67: */
1.3 bouyer 68: };
69:
70: /*
71: * Structure describing an interrupt level. struct cpu_info has an array of
72: * IPL_MAX of theses. The index in the array is equal to the stub number of
73: * the stubcode as present in vector.s
74: */
75:
76: struct intrstub {
77: #if 0
78: void *ist_entry;
79: #endif
80: void *ist_recurse;
81: void *ist_resume;
82: };
83:
1.11 dogcow 84: /* for x86 compatibility */
85: extern struct intrstub i8259_stubs[];
1.12 bouyer 86: extern struct intrstub ioapic_edge_stubs[];
87: extern struct intrstub ioapic_level_stubs[];
1.11 dogcow 88:
1.3 bouyer 89: struct iplsource {
90: struct intrhand *ipl_handlers; /* handler chain */
91: void *ipl_recurse; /* entry for spllower */
92: void *ipl_resume; /* entry for doreti */
1.20 ad 93: struct lwp *ipl_lwp;
1.23 bouyer 94: u_long ipl_evt_mask1; /* pending events for this IPL */
95: u_long ipl_evt_mask2[NR_EVENT_CHANNELS];
1.3 bouyer 96: };
97:
98:
99:
100: /*
101: * Interrupt handler chains. These are linked in both the evtsource and
102: * the iplsource.
103: * The handler is called with its (single) argument.
104: */
105:
106: struct intrhand {
107: int (*ih_fun)(void *);
108: void *ih_arg;
109: int ih_level;
1.25 cegger 110: int (*ih_realfun)(void *);
111: void *ih_realarg;
1.3 bouyer 112: struct intrhand *ih_ipl_next;
113: struct intrhand *ih_evt_next;
114: struct cpu_info *ih_cpu;
115: };
1.1 cl 116:
1.12 bouyer 117: struct xen_intr_handle {
118: int pirq; /* also contains the APIC_INT_* flags if NIOAPIC > 0 */
119: int evtch;
120: };
1.1 cl 121:
122: extern struct intrstub xenev_stubs[];
123:
1.3 bouyer 124: #define IUNMASK(ci,level) (ci)->ci_iunmask[(level)]
125:
126: extern void Xspllower(int);
127:
1.16 yamt 128: int splraise(int);
129: void spllower(int);
1.3 bouyer 130:
131: #define SPL_ASSERT_BELOW(x) KDASSERT(curcpu()->ci_ilevel < (x))
132:
133: /*
134: * Miscellaneous
135: */
136: #define spl0() spllower(IPL_NONE)
137: #define splx(x) spllower(x)
138:
1.14 ad 139: typedef uint8_t ipl_t;
1.13 yamt 140: typedef struct {
141: ipl_t _ipl;
142: } ipl_cookie_t;
143:
144: static inline ipl_cookie_t
145: makeiplcookie(ipl_t ipl)
146: {
147:
148: return (ipl_cookie_t){._ipl = ipl};
149: }
150:
151: static inline int
152: splraiseipl(ipl_cookie_t icookie)
153: {
154:
155: return splraise(icookie._ipl);
156: }
157:
1.6 yamt 158: #include <sys/spl.h>
159:
1.3 bouyer 160: /*
161: * Stub declarations.
162: */
163:
164: struct cpu_info;
165:
166: struct pcibus_attach_args;
1.1 cl 167:
1.25 cegger 168: #ifdef MULTIPROCESSOR
169: int intr_biglock_wrapper(void *);
170: #endif
171:
1.3 bouyer 172: void intr_default_setup(void);
173: int x86_nmi(void);
174: void intr_calculatemasks(struct evtsource *);
1.10 bouyer 175:
1.29 ad 176: void *intr_establish(int, struct pic *, int, int, int, int (*)(void *), void *, bool);
1.3 bouyer 177: void intr_disestablish(struct intrhand *);
178: const char *intr_string(int);
179: void cpu_intr_init(struct cpu_info *);
1.12 bouyer 180: int xen_intr_map(int *, int);
1.3 bouyer 181: #ifdef INTRDEBUG
182: void intr_printconfig(void);
1.2 yamt 183: #endif
1.12 bouyer 184: int intr_find_mpmapping(int, int, struct xen_intr_handle *);
185: struct pic *intr_findpic(int);
186: void intr_add_pcibus(struct pcibus_attach_args *);
1.10 bouyer 187:
1.31.10.1! cherry 188: void xen_ipi_init(void);
! 189: int xen_send_ipi(struct cpu_info *, uint32_t);
! 190: void xen_broadcast_ipi(uint32_t);
1.26 ad 191:
1.3 bouyer 192: #endif /* !_LOCORE */
193:
1.1 cl 194: #endif /* _XEN_INTR_H_ */
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