projects / deliverable / linux.git / blame
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|---|---|---|
| c7fdaf33 IY |
1 | /****************************************************************************** |
| 2 | * hypervisor.h | |
| 3 | * | |
| 4 | * Linux-specific hypervisor handling. | |
| 5 | * | |
| 6 | * Copyright (c) 2002-2004, K A Fraser | |
| 7 | * | |
| 8 | * This program is free software; you can redistribute it and/or | |
| 9 | * modify it under the terms of the GNU General Public License version 2 | |
| 10 | * as published by the Free Software Foundation; or, when distributed | |
| 11 | * separately from the Linux kernel or incorporated into other | |
| 12 | * software packages, subject to the following license: | |
| 13 | * | |
| 14 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
| 15 | * of this source file (the "Software"), to deal in the Software without | |
| 16 | * restriction, including without limitation the rights to use, copy, modify, | |
| 17 | * merge, publish, distribute, sublicense, and/or sell copies of the Software, | |
| 18 | * and to permit persons to whom the Software is furnished to do so, subject to | |
| 19 | * the following conditions: | |
| 20 | * | |
| 21 | * The above copyright notice and this permission notice shall be included in | |
| 22 | * all copies or substantial portions of the Software. | |
| 23 | * | |
| 24 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
| 25 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
| 26 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
| 27 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
| 28 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
| 29 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS | |
| 30 | * IN THE SOFTWARE. | |
| 31 | */ | |
| 32 | ||
| 33 | #ifndef _ASM_IA64_XEN_HYPERVISOR_H | |
| 34 | #define _ASM_IA64_XEN_HYPERVISOR_H | |
| 35 | ||
| 6f409461 | 36 | #include <linux/err.h> |
| c7fdaf33 IY |
37 | #include <xen/interface/xen.h> |
| 38 | #include <xen/interface/version.h> /* to compile feature.c */ | |
| 39 | #include <xen/features.h> /* to comiple xen-netfront.c */ | |
| 40 | #include <asm/xen/hypercall.h> | |
| 41 | ||
| 42 | /* xen_domain_type is set before executing any C code by early_xen_setup */ | |
| 43 | enum xen_domain_type { | |
| ac93925a IY |
44 | XEN_NATIVE, /* running on bare hardware */ |
| 45 | XEN_PV_DOMAIN, /* running in a PV domain */ | |
| 46 | XEN_HVM_DOMAIN, /* running in a Xen hvm domain*/ | |
| c7fdaf33 IY |
47 | }; |
| 48 | ||
| ac93925a | 49 | #ifdef CONFIG_XEN |
| c7fdaf33 | 50 | extern enum xen_domain_type xen_domain_type; |
| ac93925a IY |
51 | #else |
| 52 | #define xen_domain_type XEN_NATIVE | |
| 53 | #endif | |
| c7fdaf33 IY |
54 | |
| 55 | #define xen_domain() (xen_domain_type != XEN_NATIVE) | |
| ac93925a IY |
56 | #define xen_pv_domain() (xen_domain() && \ |
| 57 | xen_domain_type == XEN_PV_DOMAIN) | |
| 58 | #define xen_hvm_domain() (xen_domain() && \ | |
| 59 | xen_domain_type == XEN_HVM_DOMAIN) | |
| 60 | ||
| 61 | #ifdef CONFIG_XEN_DOM0 | |
| 62 | #define xen_initial_domain() (xen_pv_domain() && \ | |
| c7fdaf33 | 63 | (xen_start_info->flags & SIF_INITDOMAIN)) |
| ac93925a IY |
64 | #else |
| 65 | #define xen_initial_domain() (0) | |
| 66 | #endif | |
| c7fdaf33 | 67 | |
| c7fdaf33 | 68 | |
| ac93925a | 69 | #ifdef CONFIG_XEN |
| b5a26e4d | 70 | extern struct shared_info *HYPERVISOR_shared_info; |
| c7fdaf33 IY |
71 | extern struct start_info *xen_start_info; |
| 72 | ||
| b5a26e4d IY |
73 | void __init xen_setup_vcpu_info_placement(void); |
| 74 | void force_evtchn_callback(void); | |
| 75 | ||
| 76 | /* for drivers/xen/balloon/balloon.c */ | |
| 77 | #ifdef CONFIG_XEN_SCRUB_PAGES | |
| 78 | #define scrub_pages(_p, _n) memset((void *)(_p), 0, (_n) << PAGE_SHIFT) | |
| 79 | #else | |
| 80 | #define scrub_pages(_p, _n) ((void)0) | |
| 81 | #endif | |
| 82 | ||
| 83 | /* For setup_arch() in arch/ia64/kernel/setup.c */ | |
| 84 | void xen_ia64_enable_opt_feature(void); | |
| c7fdaf33 IY |
85 | #endif |
| 86 | ||
| c7fdaf33 | 87 | #endif /* _ASM_IA64_XEN_HYPERVISOR_H */ |