[34] | 1 | /****************************************************************************** |
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| 2 | * include/asm-x86/hap.h |
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| 3 | * |
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| 4 | * hardware-assisted paging |
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| 5 | * Copyright (c) 2007 Advanced Micro Devices (Wei Huang) |
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| 6 | * |
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| 7 | * Parts of this code are Copyright (c) 2006 by XenSource Inc. |
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| 8 | * Parts of this code are Copyright (c) 2006 by Michael A Fetterman |
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| 9 | * Parts based on earlier work by Michael A Fetterman, Ian Pratt et al. |
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| 10 | * |
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| 11 | * This program is free software; you can redistribute it and/or modify |
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| 12 | * it under the terms of the GNU General Public License as published by |
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| 13 | * the Free Software Foundation; either version 2 of the License, or |
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| 14 | * (at your option) any later version. |
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| 15 | * |
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| 16 | * This program is distributed in the hope that it will be useful, |
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| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 19 | * GNU General Public License for more details. |
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| 20 | * |
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| 21 | * You should have received a copy of the GNU General Public License |
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| 22 | * along with this program; if not, write to the Free Software |
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| 23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 24 | */ |
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| 25 | |
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| 26 | #ifndef _XEN_HAP_H |
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| 27 | #define _XEN_HAP_H |
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| 28 | |
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| 29 | #define HERE_I_AM \ |
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| 30 | debugtrace_printk("HERE I AM: %s %s %d\n", __func__, __FILE__, __LINE__) |
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| 31 | #define HAP_PRINTK(_f, _a...) \ |
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| 32 | debugtrace_printk("hap: %s(): " _f, __func__, ##_a) |
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| 33 | #define HAP_ERROR(_f, _a...) \ |
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| 34 | printk("hap error: %s(): " _f, __func__, ##_a) |
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| 35 | |
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| 36 | /************************************************/ |
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| 37 | /* hap domain page mapping */ |
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| 38 | /************************************************/ |
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| 39 | static inline void * |
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| 40 | hap_map_domain_page(mfn_t mfn) |
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| 41 | { |
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| 42 | return map_domain_page(mfn_x(mfn)); |
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| 43 | } |
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| 44 | |
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| 45 | static inline void |
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| 46 | hap_unmap_domain_page(void *p) |
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| 47 | { |
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| 48 | unmap_domain_page(p); |
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| 49 | } |
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| 50 | |
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| 51 | static inline void * |
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| 52 | hap_map_domain_page_global(mfn_t mfn) |
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| 53 | { |
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| 54 | return map_domain_page_global(mfn_x(mfn)); |
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| 55 | } |
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| 56 | |
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| 57 | static inline void |
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| 58 | hap_unmap_domain_page_global(void *p) |
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| 59 | { |
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| 60 | unmap_domain_page_global(p); |
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| 61 | } |
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| 62 | |
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| 63 | /************************************************/ |
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| 64 | /* locking for hap code */ |
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| 65 | /************************************************/ |
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| 66 | #define hap_lock_init(_d) \ |
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| 67 | do { \ |
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| 68 | spin_lock_init(&(_d)->arch.paging.hap.lock); \ |
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| 69 | (_d)->arch.paging.hap.locker = -1; \ |
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| 70 | (_d)->arch.paging.hap.locker_function = "nobody"; \ |
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| 71 | } while (0) |
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| 72 | |
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| 73 | #define hap_locked_by_me(_d) \ |
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| 74 | (current->processor == (_d)->arch.paging.hap.locker) |
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| 75 | |
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| 76 | #define hap_lock(_d) \ |
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| 77 | do { \ |
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| 78 | if ( unlikely((_d)->arch.paging.hap.locker == current->processor) )\ |
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| 79 | { \ |
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| 80 | printk("Error: hap lock held by %s\n", \ |
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| 81 | (_d)->arch.paging.hap.locker_function); \ |
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| 82 | BUG(); \ |
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| 83 | } \ |
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| 84 | spin_lock(&(_d)->arch.paging.hap.lock); \ |
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| 85 | ASSERT((_d)->arch.paging.hap.locker == -1); \ |
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| 86 | (_d)->arch.paging.hap.locker = current->processor; \ |
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| 87 | (_d)->arch.paging.hap.locker_function = __func__; \ |
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| 88 | } while (0) |
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| 89 | |
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| 90 | #define hap_unlock(_d) \ |
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| 91 | do { \ |
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| 92 | ASSERT((_d)->arch.paging.hap.locker == current->processor); \ |
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| 93 | (_d)->arch.paging.hap.locker = -1; \ |
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| 94 | (_d)->arch.paging.hap.locker_function = "nobody"; \ |
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| 95 | spin_unlock(&(_d)->arch.paging.hap.lock); \ |
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| 96 | } while (0) |
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| 97 | |
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| 98 | /************************************************/ |
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| 99 | /* hap domain level functions */ |
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| 100 | /************************************************/ |
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| 101 | void hap_domain_init(struct domain *d); |
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| 102 | int hap_domctl(struct domain *d, xen_domctl_shadow_op_t *sc, |
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| 103 | XEN_GUEST_HANDLE(void) u_domctl); |
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| 104 | int hap_enable(struct domain *d, u32 mode); |
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| 105 | void hap_final_teardown(struct domain *d); |
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| 106 | void hap_teardown(struct domain *d); |
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| 107 | void hap_vcpu_init(struct vcpu *v); |
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| 108 | |
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| 109 | extern struct paging_mode hap_paging_real_mode; |
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| 110 | extern struct paging_mode hap_paging_protected_mode; |
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| 111 | extern struct paging_mode hap_paging_pae_mode; |
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| 112 | extern struct paging_mode hap_paging_long_mode; |
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| 113 | #endif /* XEN_HAP_H */ |
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| 114 | |
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| 115 | /* |
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| 116 | * Local variables: |
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| 117 | * mode: C |
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| 118 | * c-set-style: "BSD" |
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| 119 | * c-basic-offset: 4 |
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| 120 | * indent-tabs-mode: nil |
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| 121 | * End: |
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| 122 | */ |
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