projects / linux-2.6-block.git / blame
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|---|---|---|
| a42089dd JF |
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 | ||
| 05e4d316 PA |
33 | #ifndef _ASM_X86_XEN_HYPERVISOR_H |
| 34 | #define _ASM_X86_XEN_HYPERVISOR_H | |
| a42089dd JF |
35 | |
| 36 | #include <linux/types.h> | |
| 37 | #include <linux/kernel.h> | |
| a42089dd JF |
38 | |
| 39 | #include <xen/interface/xen.h> | |
| 40 | #include <xen/interface/version.h> | |
| 41 | ||
| 42 | #include <asm/ptrace.h> | |
| 43 | #include <asm/page.h> | |
| 4bac07c9 | 44 | #include <asm/desc.h> |
| a42089dd JF |
45 | #if defined(__i386__) |
| 46 | # ifdef CONFIG_X86_PAE | |
| 47 | # include <asm-generic/pgtable-nopud.h> | |
| 48 | # else | |
| 49 | # include <asm-generic/pgtable-nopmd.h> | |
| 50 | # endif | |
| 51 | #endif | |
| 52 | #include <asm/xen/hypercall.h> | |
| 53 | ||
| 54 | /* arch/i386/kernel/setup.c */ | |
| 55 | extern struct shared_info *HYPERVISOR_shared_info; | |
| 56 | extern struct start_info *xen_start_info; | |
| a42089dd JF |
57 | |
| 58 | /* arch/i386/mach-xen/evtchn.c */ | |
| 59 | /* Force a proper event-channel callback from Xen. */ | |
| 60 | extern void force_evtchn_callback(void); | |
| 61 | ||
| 62 | /* Turn jiffies into Xen system time. */ | |
| 63 | u64 jiffies_to_st(unsigned long jiffies); | |
| 64 | ||
| 65 | ||
| 66 | #define MULTI_UVMFLAGS_INDEX 3 | |
| 67 | #define MULTI_UVMDOMID_INDEX 4 | |
| 68 | ||
| 6e833587 JF |
69 | enum xen_domain_type { |
| 70 | XEN_NATIVE, | |
| 71 | XEN_PV_DOMAIN, | |
| 72 | XEN_HVM_DOMAIN, | |
| 73 | }; | |
| 74 | ||
| 75 | extern enum xen_domain_type xen_domain_type; | |
| 76 | ||
| 77 | #define xen_domain() (xen_domain_type != XEN_NATIVE) | |
| 78 | #define xen_pv_domain() (xen_domain_type == XEN_PV_DOMAIN) | |
| 79 | #define xen_initial_domain() (xen_pv_domain() && xen_start_info->flags & SIF_INITDOMAIN) | |
| 80 | #define xen_hvm_domain() (xen_domain_type == XEN_HVM_DOMAIN) | |
| a42089dd | 81 | |
| 05e4d316 | 82 | #endif /* _ASM_X86_XEN_HYPERVISOR_H */ |