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Annotation of Gnu-Mach/xen/public/nmi.h, revision 1.1

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

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