xref: /illumos-gate/usr/src/uts/i86pc/sys/xpv_support.h (revision 349b53dd)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #ifndef _SYS_XPV_SUPPORT_H
28 #define	_SYS_XPV_SUPPORT_H
29 
30 #ifdef __cplusplus
31 extern "C" {
32 #endif
33 
34 #define	__XEN_INTERFACE_VERSION__	__XEN_LATEST_INTERFACE_VERSION__
35 
36 #if !defined(_ASM)
37 
38 #include <sys/types.h>
39 #include <sys/inttypes.h>
40 #include <sys/dditypes.h>
41 #include <sys/xpv_impl.h>
42 #include <sys/xen_mmu.h>
43 
44 #define	IPL_DEBUG	15	/* domain debug interrupt */
45 #define	IPL_CONS	9
46 #define	IPL_VIF		6
47 #define	IPL_VBD		5
48 #define	IPL_EVTCHN	1
49 
50 #define	INVALID_EVTCHN 0
51 
52 typedef uint_t (*ec_handler_fcn_t)();
53 
54 extern int ec_init(void);
55 extern void ec_fini();
56 extern void ec_bind_evtchn_to_handler(int, pri_t, ec_handler_fcn_t, void *);
57 extern void ec_unbind_evtchn(int);
58 extern void ec_notify_via_evtchn(uint_t);
59 extern void hypervisor_mask_event(uint_t);
60 extern void hypervisor_unmask_event(uint_t);
61 
62 extern void xen_hvm_init(void);
63 extern int xen_bind_interdomain(int, int, int *);
64 extern int xen_alloc_unbound_evtchn(int, int *);
65 extern int xen_xlate_errcode(int error);
66 extern void *xen_alloc_pages(pgcnt_t cnt);
67 extern void kbm_map_ma(maddr_t ma, uintptr_t va, uint_t level);
68 
69 /*
70  * Stub functions to allow the FE drivers to build without littering them
71  * with #ifdefs
72  */
73 extern void balloon_drv_added(int64_t);
74 extern long balloon_free_pages(uint_t, mfn_t *, caddr_t, pfn_t *);
75 extern void xen_release_pfn(pfn_t);
76 extern void reassign_pfn(pfn_t, mfn_t);
77 
78 extern shared_info_t *HYPERVISOR_shared_info;
79 extern pfn_t xen_shared_info_frame;
80 
81 /*
82  * Argument to xpv_feature(). This function will return -1 if a feature
83  * is not available, 1 if a boolean feature is available, and a value >= 0
84  * if a numeric value is requested.
85  */
86 #define	XPVF_BITS		0	/* numeric (32 or 64) */
87 #define	XPVF_VERSION_MAJOR	1	/* numeric */
88 #define	XPVF_VERSION_MINOR	2	/* numeric */
89 #define	XPVF_HYPERCALLS		3	/* boolean (hypercalls work) */
90 #define	XPVF_SHARED_INFO	4	/* boolean (shared info is valid) */
91 #define	XPVF_TLB_FLUSH		5	/* boolean (tlb flush call present) */
92 
93 extern int xpv_feature(int);
94 
95 #define	IN_XPV_PANIC()	(__lintzero)
96 
97 #ifdef __cplusplus
98 }
99 #endif
100 
101 #endif	/* __ASM */
102 #endif	/* _SYS_XPV_SUPPORT_H */
103