Isaku Yamahata | c7fdaf3 | 2008-10-17 11:17:57 +0900 | [diff] [blame] | 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 | |
Fenghua Yu | 6f40946 | 2009-07-09 21:23:39 -0700 | [diff] [blame] | 36 | #include <linux/err.h> |
Isaku Yamahata | c7fdaf3 | 2008-10-17 11:17:57 +0900 | [diff] [blame] | 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 { |
Isaku Yamahata | ac93925 | 2009-03-04 21:05:33 +0900 | [diff] [blame] | 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*/ |
Isaku Yamahata | c7fdaf3 | 2008-10-17 11:17:57 +0900 | [diff] [blame] | 47 | }; |
| 48 | |
Isaku Yamahata | ac93925 | 2009-03-04 21:05:33 +0900 | [diff] [blame] | 49 | #ifdef CONFIG_XEN |
Isaku Yamahata | c7fdaf3 | 2008-10-17 11:17:57 +0900 | [diff] [blame] | 50 | extern enum xen_domain_type xen_domain_type; |
Isaku Yamahata | ac93925 | 2009-03-04 21:05:33 +0900 | [diff] [blame] | 51 | #else |
| 52 | #define xen_domain_type XEN_NATIVE |
| 53 | #endif |
Isaku Yamahata | c7fdaf3 | 2008-10-17 11:17:57 +0900 | [diff] [blame] | 54 | |
| 55 | #define xen_domain() (xen_domain_type != XEN_NATIVE) |
Isaku Yamahata | ac93925 | 2009-03-04 21:05:33 +0900 | [diff] [blame] | 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() && \ |
Isaku Yamahata | c7fdaf3 | 2008-10-17 11:17:57 +0900 | [diff] [blame] | 63 | (xen_start_info->flags & SIF_INITDOMAIN)) |
Isaku Yamahata | ac93925 | 2009-03-04 21:05:33 +0900 | [diff] [blame] | 64 | #else |
| 65 | #define xen_initial_domain() (0) |
| 66 | #endif |
Isaku Yamahata | c7fdaf3 | 2008-10-17 11:17:57 +0900 | [diff] [blame] | 67 | |
Isaku Yamahata | c7fdaf3 | 2008-10-17 11:17:57 +0900 | [diff] [blame] | 68 | |
Isaku Yamahata | ac93925 | 2009-03-04 21:05:33 +0900 | [diff] [blame] | 69 | #ifdef CONFIG_XEN |
Isaku Yamahata | b5a26e4 | 2008-10-17 11:17:59 +0900 | [diff] [blame] | 70 | extern struct shared_info *HYPERVISOR_shared_info; |
Isaku Yamahata | c7fdaf3 | 2008-10-17 11:17:57 +0900 | [diff] [blame] | 71 | extern struct start_info *xen_start_info; |
| 72 | |
Isaku Yamahata | b5a26e4 | 2008-10-17 11:17:59 +0900 | [diff] [blame] | 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); |
Isaku Yamahata | c7fdaf3 | 2008-10-17 11:17:57 +0900 | [diff] [blame] | 85 | #endif |
| 86 | |
Isaku Yamahata | c7fdaf3 | 2008-10-17 11:17:57 +0900 | [diff] [blame] | 87 | #endif /* _ASM_IA64_XEN_HYPERVISOR_H */ |