OvmfPkg/Include/IndustryStandard/Xen/arch-x86/xen.h

   1 /******************************************************************************
   2  * arch-x86/xen.h
   3  *
   4  * Guest OS interface to x86 Xen.
   5  *
   6  * SPDX-License-Identifier: MIT
   7  *
   8  * Copyright (c) 2004-2006, K A Fraser
   9  */
  10
  11 #include "../xen.h"
  12
  13 #ifndef __XEN_PUBLIC_ARCH_X86_XEN_H__
  14 #define __XEN_PUBLIC_ARCH_X86_XEN_H__
  15
  16 /* Structural guest handles introduced in 0x00030201. */
  17   #if __XEN_INTERFACE_VERSION__ >= 0x00030201
  18 #define ___DEFINE_XEN_GUEST_HANDLE(name, type) \
  19     typedef struct { type *p; } __guest_handle_ ## name
  20   #else
  21 #define ___DEFINE_XEN_GUEST_HANDLE(name, type) \
  22     typedef type * __guest_handle_ ## name
  23   #endif
  24
  25 /*
  26  * XEN_GUEST_HANDLE represents a guest pointer, when passed as a field
  27  * in a struct in memory.
  28  * XEN_GUEST_HANDLE_PARAM represent a guest pointer, when passed as an
  29  * hypercall argument.
  30  * XEN_GUEST_HANDLE_PARAM and XEN_GUEST_HANDLE are the same on X86 but
  31  * they might not be on other architectures.
  32  */
  33 #define __DEFINE_XEN_GUEST_HANDLE(name, type) \
  34     ___DEFINE_XEN_GUEST_HANDLE(name, type);   \
  35     ___DEFINE_XEN_GUEST_HANDLE(const_##name, const type)
  36 #define DEFINE_XEN_GUEST_HANDLE(name)       __DEFINE_XEN_GUEST_HANDLE(name, name)
  37 #define __XEN_GUEST_HANDLE(name)            __guest_handle_ ## name
  38 #define XEN_GUEST_HANDLE(name)              __XEN_GUEST_HANDLE(name)
  39 #define XEN_GUEST_HANDLE_PARAM(name)        XEN_GUEST_HANDLE(name)
  40 #define set_xen_guest_handle_raw(hnd, val)  do { (hnd).p = val; } while (0)
  41   #ifdef __XEN_TOOLS__
  42 #define get_xen_guest_handle(val, hnd)  do { val = (hnd).p; } while (0)
  43   #endif
  44 #define set_xen_guest_handle(hnd, val)  set_xen_guest_handle_raw(hnd, val)
  45
  46   #if defined (MDE_CPU_IA32)
  47     #include "xen-x86_32.h"
  48   #elif defined (MDE_CPU_X64)
  49     #include "xen-x86_64.h"
  50   #endif
  51
  52   #ifndef __ASSEMBLY__
  53 typedef UINTN xen_pfn_t;
  54 #define PRI_xen_pfn  "lx"
  55   #endif
  56
  57 #define XEN_HAVE_PV_UPCALL_MASK  1
  58
  59 /* Maximum number of virtual CPUs in legacy multi-processor guests. */
  60 #define XEN_LEGACY_MAX_VCPUS  32
  61
  62   #ifndef __ASSEMBLY__
  63
  64 typedef UINTN xen_ulong_t;
  65 #define PRI_xen_ulong  "lx"
  66
  67 typedef UINT64 tsc_timestamp_t; /* RDTSC timestamp */
  68
  69     #ifdef MDE_CPU_IA32
  70       #pragma pack(4)
  71     #endif
  72 struct arch_shared_info {
  73   UINTN        max_pfn;             /* max pfn that appears in table */
  74   /* Frame containing list of mfns containing list of mfns containing p2m. */
  75   xen_pfn_t    pfn_to_mfn_frame_list_list;
  76   UINTN        nmi_reason;
  77   UINT64       pad[32];
  78 };
  79
  80 typedef struct arch_shared_info arch_shared_info_t;
  81     #ifdef MDE_CPU_IA32
  82       #pragma pack()
  83     #endif
  84
  85   #endif /* !__ASSEMBLY__ */
  86
  87 #endif /* __XEN_PUBLIC_ARCH_X86_XEN_H__ */
  88
  89 /*
  90  * Local variables:
  91  * mode: C
  92  * c-file-style: "BSD"
  93  * c-basic-offset: 4
  94  * tab-width: 4
  95  * indent-tabs-mode: nil
  96  * End:
  97  */