1#include <xen/arm/interface.h>
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 1/******************************************************************************
 2 * Guest OS interface to ARM Xen.
 3 *
 4 * Stefano Stabellini <stefano.stabellini@eu.citrix.com>, Citrix, 2012
 5 */
 6
 7#ifndef _ASM_ARM_XEN_INTERFACE_H
 8#define _ASM_ARM_XEN_INTERFACE_H
 9
10#include <linux/types.h>
11
12#define uint64_aligned_t uint64_t __attribute__((aligned(8)))
13
14#define __DEFINE_GUEST_HANDLE(name, type) \
15	typedef struct { union { type *p; uint64_aligned_t q; }; }  \
16        __guest_handle_ ## name
17
18#define DEFINE_GUEST_HANDLE_STRUCT(name) \
19	__DEFINE_GUEST_HANDLE(name, struct name)
20#define DEFINE_GUEST_HANDLE(name) __DEFINE_GUEST_HANDLE(name, name)
21#define GUEST_HANDLE(name)        __guest_handle_ ## name
22
23#define set_xen_guest_handle(hnd, val)			\
24	do {						\
25		if (sizeof(hnd) == 8)			\
26			*(uint64_t *)&(hnd) = 0;	\
27		(hnd).p = val;				\
28	} while (0)
29
30#ifndef __ASSEMBLY__
31/* Explicitly size integers that represent pfns in the interface with
32 * Xen so that we can have one ABI that works for 32 and 64 bit guests.
33 * Note that this means that the xen_pfn_t type may be capable of
34 * representing pfn's which the guest cannot represent in its own pfn
35 * type. However since pfn space is controlled by the guest this is
36 * fine since it simply wouldn't be able to create any sure pfns in
37 * the first place.
38 */
39typedef uint64_t xen_pfn_t;
40#define PRI_xen_pfn "llx"
41typedef uint64_t xen_ulong_t;
42#define PRI_xen_ulong "llx"
43/* Guest handles for primitive C types. */
44__DEFINE_GUEST_HANDLE(uchar, unsigned char);
45__DEFINE_GUEST_HANDLE(uint,  unsigned int);
46DEFINE_GUEST_HANDLE(char);
47DEFINE_GUEST_HANDLE(int);
48DEFINE_GUEST_HANDLE(void);
49DEFINE_GUEST_HANDLE(uint64_t);
50DEFINE_GUEST_HANDLE(uint32_t);
51DEFINE_GUEST_HANDLE(xen_pfn_t);
52DEFINE_GUEST_HANDLE(xen_ulong_t);
53
54/* Maximum number of virtual CPUs in multi-processor guests. */
55#define MAX_VIRT_CPUS 1
56
57struct arch_vcpu_info { };
58struct arch_shared_info { };
59
60/* TODO: Move pvclock definitions some place arch independent */
61struct pvclock_vcpu_time_info {
62	u32   version;
63	u32   pad0;
64	u64   tsc_timestamp;
65	u64   system_time;
66	u32   tsc_to_system_mul;
67	s8    tsc_shift;
68	u8    flags;
69	u8    pad[2];
70} __attribute__((__packed__)); /* 32 bytes */
71
72/* It is OK to have a 12 bytes struct with no padding because it is packed */
73struct pvclock_wall_clock {
74	u32   version;
75	u32   sec;
76	u32   nsec;
77} __attribute__((__packed__));
78#endif
79
80#endif /* _ASM_ARM_XEN_INTERFACE_H */