sys/arch/xen/include/xen3-public/nmi.h

   1 /* $NetBSD: nmi.h,v 1.1.1.1.38.1 2007/10/03 19:26:08 garbled Exp $ */
   2 /******************************************************************************
   3  * nmi.h
   4  *
   5  * NMI callback registration and reason codes.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a copy
   8  * of this software and associated documentation files (the "Software"), to
   9  * deal in the Software without restriction, including without limitation the
  10  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
  11  * sell copies of the Software, and to permit persons to whom the Software is
  12  * furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included in
  15  * all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  20  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  22  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  23  * DEALINGS IN THE SOFTWARE.
  24  *
  25  * Copyright (c) 2005, Keir Fraser <keir@xensource.com>
  26  */
  27
  28 #ifndef __XEN_PUBLIC_NMI_H__
  29 #define __XEN_PUBLIC_NMI_H__
  30
  31 /*
  32  * NMI reason codes:
  33  * Currently these are x86-specific, stored in arch_shared_info.nmi_reason.
  34  */
  35  /* I/O-check error reported via ISA port 0x61, bit 6. */
  36 #define _XEN_NMIREASON_io_error     0
  37 #define XEN_NMIREASON_io_error      (1UL << _XEN_NMIREASON_io_error)
  38  /* Parity error reported via ISA port 0x61, bit 7. */
  39 #define _XEN_NMIREASON_parity_error 1
  40 #define XEN_NMIREASON_parity_error  (1UL << _XEN_NMIREASON_parity_error)
  41  /* Unknown hardware-generated NMI. */
  42 #define _XEN_NMIREASON_unknown      2
  43 #define XEN_NMIREASON_unknown       (1UL << _XEN_NMIREASON_unknown)
  44
  45 /*
  46  * long nmi_op(unsigned int cmd, void *arg)
  47  * NB. All ops return zero on success, else a negative error code.
  48  */
  49
  50 /*
  51  * Register NMI callback for this (calling) VCPU. Currently this only makes
  52  * sense for domain 0, vcpu 0. All other callers will be returned EINVAL.
  53  * arg == pointer to xennmi_callback structure.
  54  */
  55 #define XENNMI_register_callback   0
  56 struct xennmi_callback {
  57     unsigned long handler_address;
  58     unsigned long pad;
  59 };
  60 typedef struct xennmi_callback xennmi_callback_t;
  61 DEFINE_XEN_GUEST_HANDLE(xennmi_callback_t);
  62
  63 /*
  64  * Deregister NMI callback for this (calling) VCPU.
  65  * arg == NULL.
  66  */
  67 #define XENNMI_unregister_callback 1
  68
  69 #endif /* __XEN_PUBLIC_NMI_H__ */
  70
  71 /*
  72  * Local variables:
  73  * mode: C
  74  * c-set-style: "BSD"
  75  * c-basic-offset: 4
  76  * tab-width: 4
  77  * indent-tabs-mode: nil
  78  * End:
  79  */