The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/xen/interface/nmi.h

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    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 <keir@xensource.com>
   25  */
   26 
   27 #ifndef __XEN_PUBLIC_NMI_H__
   28 #define __XEN_PUBLIC_NMI_H__
   29 
   30 #include "xen.h"
   31 
   32 /*
   33  * NMI reason codes:
   34  * Currently these are x86-specific, stored in arch_shared_info.nmi_reason.
   35  */
   36  /* I/O-check error reported via ISA port 0x61, bit 6. */
   37 #define _XEN_NMIREASON_io_error     0
   38 #define XEN_NMIREASON_io_error      (1UL << _XEN_NMIREASON_io_error)
   39  /* PCI SERR reported via ISA port 0x61, bit 7. */
   40 #define _XEN_NMIREASON_pci_serr     1
   41 #define XEN_NMIREASON_pci_serr      (1UL << _XEN_NMIREASON_pci_serr)
   42 #if __XEN_INTERFACE_VERSION__ < 0x00040300 /* legacy alias of the above */
   43  /* Parity error reported via ISA port 0x61, bit 7. */
   44 #define _XEN_NMIREASON_parity_error 1
   45 #define XEN_NMIREASON_parity_error  (1UL << _XEN_NMIREASON_parity_error)
   46 #endif
   47  /* Unknown hardware-generated NMI. */
   48 #define _XEN_NMIREASON_unknown      2
   49 #define XEN_NMIREASON_unknown       (1UL << _XEN_NMIREASON_unknown)
   50 
   51 /*
   52  * long nmi_op(unsigned int cmd, void *arg)
   53  * NB. All ops return zero on success, else a negative error code.
   54  */
   55 
   56 /*
   57  * Register NMI callback for this (calling) VCPU. Currently this only makes
   58  * sense for domain 0, vcpu 0. All other callers will be returned EINVAL.
   59  * arg == pointer to xennmi_callback structure.
   60  */
   61 #define XENNMI_register_callback   0
   62 struct xennmi_callback {
   63     unsigned long handler_address;
   64     unsigned long pad;
   65 };
   66 typedef struct xennmi_callback xennmi_callback_t;
   67 DEFINE_XEN_GUEST_HANDLE(xennmi_callback_t);
   68 
   69 /*
   70  * Deregister NMI callback for this (calling) VCPU.
   71  * arg == NULL.
   72  */
   73 #define XENNMI_unregister_callback 1
   74 
   75 #endif /* __XEN_PUBLIC_NMI_H__ */
   76 
   77 /*
   78  * Local variables:
   79  * mode: C
   80  * c-file-style: "BSD"
   81  * c-basic-offset: 4
   82  * tab-width: 4
   83  * indent-tabs-mode: nil
   84  * End:
   85  */

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