Annotation of src/sys/arch/xen/include/intr.h, Revision 1.20
1.20 ! ad 1: /* $NetBSD: intr.h,v 1.19 2007/11/22 16:16:57 bouyer 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: * 3. All advertising materials mentioning features or use of this software
20: * must display the following acknowledgement:
21: * This product includes software developed by the NetBSD
22: * Foundation, Inc. and its contributors.
23: * 4. Neither the name of The NetBSD Foundation nor the names of its
24: * contributors may be used to endorse or promote products derived
25: * from this software without specific prior written permission.
26: *
27: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37: * POSSIBILITY OF SUCH DAMAGE.
38: */
1.1 cl 39:
40: #ifndef _XEN_INTR_H_
41: #define _XEN_INTR_H_
42:
1.19 bouyer 43: #include <xen/intrdefs.h>
1.1 cl 44:
45: #ifndef _LOCORE
1.19 bouyer 46: #include <xen/xen.h>
47: #include <xen/hypervisor.h>
48: #include <xen/evtchn.h>
1.3 bouyer 49: #include <machine/cpu.h>
50: #include <machine/pic.h>
51:
1.10 bouyer 52: #include "opt_xen.h"
53:
1.3 bouyer 54: /*
55: * Struct describing an event channel.
56: */
57:
58: struct evtsource {
59: int ev_maxlevel; /* max. IPL for this source */
60: u_int32_t ev_imask; /* interrupt mask */
61: struct intrhand *ev_handlers; /* handler chain */
62: struct evcnt ev_evcnt; /* interrupt counter */
63: char ev_evname[32]; /* event counter name */
64: };
65:
66: /*
67: * Structure describing an interrupt level. struct cpu_info has an array of
68: * IPL_MAX of theses. The index in the array is equal to the stub number of
69: * the stubcode as present in vector.s
70: */
71:
72: struct intrstub {
73: #if 0
74: void *ist_entry;
75: #endif
76: void *ist_recurse;
77: void *ist_resume;
78: };
79:
1.11 dogcow 80: #ifdef XEN3
81: /* for x86 compatibility */
82: extern struct intrstub i8259_stubs[];
1.12 bouyer 83: extern struct intrstub ioapic_edge_stubs[];
84: extern struct intrstub ioapic_level_stubs[];
1.11 dogcow 85: #endif
86:
1.3 bouyer 87: struct iplsource {
88: struct intrhand *ipl_handlers; /* handler chain */
89: void *ipl_recurse; /* entry for spllower */
90: void *ipl_resume; /* entry for doreti */
1.20 ! ad 91: struct lwp *ipl_lwp;
1.3 bouyer 92: u_int32_t ipl_evt_mask1; /* pending events for this IPL */
93: u_int32_t ipl_evt_mask2[NR_EVENT_CHANNELS];
94: };
95:
96:
97:
98: /*
99: * Interrupt handler chains. These are linked in both the evtsource and
100: * the iplsource.
101: * The handler is called with its (single) argument.
102: */
103:
104: struct intrhand {
105: int (*ih_fun)(void *);
106: void *ih_arg;
107: int ih_level;
108: struct intrhand *ih_ipl_next;
109: struct intrhand *ih_evt_next;
110: struct cpu_info *ih_cpu;
111: };
1.1 cl 112:
1.12 bouyer 113: struct xen_intr_handle {
114: int pirq; /* also contains the APIC_INT_* flags if NIOAPIC > 0 */
115: int evtch;
116: };
1.1 cl 117:
118: extern struct intrstub xenev_stubs[];
119:
1.3 bouyer 120: #define IUNMASK(ci,level) (ci)->ci_iunmask[(level)]
121:
122: extern void Xspllower(int);
123:
1.16 yamt 124: int splraise(int);
125: void spllower(int);
126: void softintr(int);
1.3 bouyer 127:
128: #define SPL_ASSERT_BELOW(x) KDASSERT(curcpu()->ci_ilevel < (x))
129:
130: /*
131: * Software interrupt masks
132: */
133: #define splsoftxenevt() splraise(IPL_SOFTXENEVT)
134:
135: /*
136: * Miscellaneous
137: */
138: #define spl0() spllower(IPL_NONE)
139: #define splx(x) spllower(x)
140:
1.14 ad 141: typedef uint8_t ipl_t;
1.13 yamt 142: typedef struct {
143: ipl_t _ipl;
144: } ipl_cookie_t;
145:
146: static inline ipl_cookie_t
147: makeiplcookie(ipl_t ipl)
148: {
149:
150: return (ipl_cookie_t){._ipl = ipl};
151: }
152:
153: static inline int
154: splraiseipl(ipl_cookie_t icookie)
155: {
156:
157: return splraise(icookie._ipl);
158: }
159:
1.6 yamt 160: #include <sys/spl.h>
161:
1.3 bouyer 162: /*
163: * XXX
164: */
165: #define setsoftnet() softintr(SIR_NET)
166:
167: /*
168: * Stub declarations.
169: */
170:
1.20 ! ad 171: extern void Xsoftintr(void);
1.3 bouyer 172:
173: struct cpu_info;
174:
175: extern char idt_allocmap[];
176:
177: struct pcibus_attach_args;
1.1 cl 178:
1.3 bouyer 179: void intr_default_setup(void);
180: int x86_nmi(void);
181: void intr_calculatemasks(struct evtsource *);
1.10 bouyer 182:
1.3 bouyer 183: void *intr_establish(int, struct pic *, int, int, int, int (*)(void *), void *);
184: void intr_disestablish(struct intrhand *);
185: const char *intr_string(int);
186: void cpu_intr_init(struct cpu_info *);
1.12 bouyer 187: int xen_intr_map(int *, int);
1.3 bouyer 188: #ifdef INTRDEBUG
189: void intr_printconfig(void);
1.2 yamt 190: #endif
1.12 bouyer 191: int intr_find_mpmapping(int, int, struct xen_intr_handle *);
192: struct pic *intr_findpic(int);
193: void intr_add_pcibus(struct pcibus_attach_args *);
1.10 bouyer 194:
1.3 bouyer 195: #endif /* !_LOCORE */
196:
1.1 cl 197: #endif /* _XEN_INTR_H_ */
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