| 1 | /****************************************************************************** |
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| 2 | * nmi.h |
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| 3 | * |
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| 4 | * NMI callback registration and reason codes. |
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| 5 | * |
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| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
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| 7 | * of this software and associated documentation files (the "Software"), to |
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| 8 | * deal in the Software without restriction, including without limitation the |
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| 9 | * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
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| 10 | * sell copies of the Software, and to permit persons to whom the Software is |
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| 11 | * furnished to do so, subject to the following conditions: |
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| 12 | * |
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| 13 | * The above copyright notice and this permission notice shall be included in |
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| 14 | * all copies or substantial portions of the Software. |
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| 15 | * |
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| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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| 19 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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| 21 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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| 22 | * DEALINGS IN THE SOFTWARE. |
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| 23 | * |
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| 24 | * Copyright (c) 2005, Keir Fraser <keir@xensource.com> |
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| 25 | */ |
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| 26 | |
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| 27 | #ifndef __XEN_PUBLIC_NMI_H__ |
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| 28 | #define __XEN_PUBLIC_NMI_H__ |
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| 29 | |
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| 30 | /* |
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| 31 | * NMI reason codes: |
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| 32 | * Currently these are x86-specific, stored in arch_shared_info.nmi_reason. |
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| 33 | */ |
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| 34 | /* I/O-check error reported via ISA port 0x61, bit 6. */ |
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| 35 | #define _XEN_NMIREASON_io_error 0 |
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| 36 | #define XEN_NMIREASON_io_error (1UL << _XEN_NMIREASON_io_error) |
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| 37 | /* Parity error reported via ISA port 0x61, bit 7. */ |
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| 38 | #define _XEN_NMIREASON_parity_error 1 |
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| 39 | #define XEN_NMIREASON_parity_error (1UL << _XEN_NMIREASON_parity_error) |
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| 40 | /* Unknown hardware-generated NMI. */ |
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| 41 | #define _XEN_NMIREASON_unknown 2 |
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| 42 | #define XEN_NMIREASON_unknown (1UL << _XEN_NMIREASON_unknown) |
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| 43 | |
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| 44 | /* |
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| 45 | * long nmi_op(unsigned int cmd, void *arg) |
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| 46 | * NB. All ops return zero on success, else a negative error code. |
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| 47 | */ |
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| 48 | |
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| 49 | /* |
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| 50 | * Register NMI callback for this (calling) VCPU. Currently this only makes |
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| 51 | * sense for domain 0, vcpu 0. All other callers will be returned EINVAL. |
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| 52 | * arg == pointer to xennmi_callback structure. |
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| 53 | */ |
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| 54 | #define XENNMI_register_callback 0 |
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| 55 | struct xennmi_callback { |
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| 56 | unsigned long handler_address; |
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| 57 | unsigned long pad; |
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| 58 | }; |
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| 59 | typedef struct xennmi_callback xennmi_callback_t; |
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| 60 | DEFINE_XEN_GUEST_HANDLE(xennmi_callback_t); |
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| 61 | |
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| 62 | /* |
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| 63 | * Deregister NMI callback for this (calling) VCPU. |
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| 64 | * arg == NULL. |
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| 65 | */ |
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| 66 | #define XENNMI_unregister_callback 1 |
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| 67 | |
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| 68 | #endif /* __XEN_PUBLIC_NMI_H__ */ |
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| 69 | |
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| 70 | /* |
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| 71 | * Local variables: |
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| 72 | * mode: C |
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| 73 | * c-set-style: "BSD" |
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| 74 | * c-basic-offset: 4 |
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| 75 | * tab-width: 4 |
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| 76 | * indent-tabs-mode: nil |
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| 77 | * End: |
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| 78 | */ |
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