target/i386/kvm/xen-compat.h

   1 /*
   2  * Xen HVM emulation support in KVM
   3  *
   4  * Copyright © 2022 Amazon.com, Inc. or its affiliates. All Rights Reserved.
   5  *
   6  * This work is licensed under the terms of the GNU GPL, version 2 or later.
   7  * See the COPYING file in the top-level directory.
   8  *
   9  */
  10
  11 #ifndef QEMU_I386_KVM_XEN_COMPAT_H
  12 #define QEMU_I386_KVM_XEN_COMPAT_H
  13
  14 #include "hw/xen/interface/memory.h"
  15
  16 typedef uint32_t compat_pfn_t;
  17 typedef uint32_t compat_ulong_t;
  18 typedef uint32_t compat_ptr_t;
  19
  20 #define __DEFINE_COMPAT_HANDLE(name, type)      \
  21     typedef struct {                            \
  22         compat_ptr_t c;                         \
  23         type *_[0] __attribute__((packed));   \
  24     } __compat_handle_ ## name;                 \
  25
  26 #define DEFINE_COMPAT_HANDLE(name) __DEFINE_COMPAT_HANDLE(name, name)
  27 #define COMPAT_HANDLE(name) __compat_handle_ ## name
  28
  29 DEFINE_COMPAT_HANDLE(compat_pfn_t);
  30 DEFINE_COMPAT_HANDLE(compat_ulong_t);
  31 DEFINE_COMPAT_HANDLE(int);
  32
  33 struct compat_xen_add_to_physmap {
  34     domid_t domid;
  35     uint16_t size;
  36     unsigned int space;
  37     compat_ulong_t idx;
  38     compat_pfn_t gpfn;
  39 };
  40
  41 struct compat_xen_add_to_physmap_batch {
  42     domid_t domid;
  43     uint16_t space;
  44     uint16_t size;
  45     uint16_t extra;
  46     COMPAT_HANDLE(compat_ulong_t) idxs;
  47     COMPAT_HANDLE(compat_pfn_t) gpfns;
  48     COMPAT_HANDLE(int) errs;
  49 };
  50
  51 struct compat_physdev_map_pirq {
  52     domid_t domid;
  53     uint16_t pad;
  54     /* IN */
  55     int type;
  56     /* IN (ignored for ..._MULTI_MSI) */
  57     int index;
  58     /* IN or OUT */
  59     int pirq;
  60     /* IN - high 16 bits hold segment for ..._MSI_SEG and ..._MULTI_MSI */
  61     int bus;
  62     /* IN */
  63     int devfn;
  64     /* IN (also OUT for ..._MULTI_MSI) */
  65     int entry_nr;
  66     /* IN */
  67     uint64_t table_base;
  68 } __attribute__((packed));
  69
  70 #endif /* QEMU_I386_XEN_COMPAT_H */