1/* SPDX-License-Identifier: GPL-2.0 */
 2/******************************************************************************
 3 * Guest OS interface to ARM Xen.
 4 *
 5 * Stefano Stabellini <stefano.stabellini@eu.citrix.com>, Citrix, 2012
 6 */
 7
 8#ifndef _ASM_ARM_XEN_INTERFACE_H
 9#define _ASM_ARM_XEN_INTERFACE_H
10
11#include <linux/types.h>
12
13#define uint64_aligned_t uint64_t __attribute__((aligned(8)))
14
15#define __DEFINE_GUEST_HANDLE(name, type) \
16	typedef struct { union { type *p; uint64_aligned_t q; }; }  \
17        __guest_handle_ ## name
18
19#define DEFINE_GUEST_HANDLE_STRUCT(name) \
20	__DEFINE_GUEST_HANDLE(name, struct name)
21#define DEFINE_GUEST_HANDLE(name) __DEFINE_GUEST_HANDLE(name, name)
22#define GUEST_HANDLE(name)        __guest_handle_ ## name
23
24#define set_xen_guest_handle(hnd, val)			\
25	do {						\
26		if (sizeof(hnd) == 8)			\
27			*(uint64_t *)&(hnd) = 0;	\
28		(hnd).p = val;				\
29	} while (0)
30
31#define __HYPERVISOR_platform_op_raw __HYPERVISOR_platform_op
32
33#ifndef __ASSEMBLY__
34/* Explicitly size integers that represent pfns in the interface with
35 * Xen so that we can have one ABI that works for 32 and 64 bit guests.
36 * Note that this means that the xen_pfn_t type may be capable of
37 * representing pfn's which the guest cannot represent in its own pfn
38 * type. However since pfn space is controlled by the guest this is
39 * fine since it simply wouldn't be able to create any sure pfns in
40 * the first place.
41 */
42typedef uint64_t xen_pfn_t;
43#define PRI_xen_pfn "llx"
44typedef uint64_t xen_ulong_t;
45#define PRI_xen_ulong "llx"
46typedef int64_t xen_long_t;
47#define PRI_xen_long "llx"
48/* Guest handles for primitive C types. */
49__DEFINE_GUEST_HANDLE(uchar, unsigned char);
50__DEFINE_GUEST_HANDLE(uint,  unsigned int);
51DEFINE_GUEST_HANDLE(char);
52DEFINE_GUEST_HANDLE(int);
53DEFINE_GUEST_HANDLE(void);
54DEFINE_GUEST_HANDLE(uint64_t);
55DEFINE_GUEST_HANDLE(uint32_t);
56DEFINE_GUEST_HANDLE(xen_pfn_t);
57DEFINE_GUEST_HANDLE(xen_ulong_t);
58
59/* Maximum number of virtual CPUs in multi-processor guests. */
60#define MAX_VIRT_CPUS 1
61
62struct arch_vcpu_info { };
63struct arch_shared_info { };
64
65/* TODO: Move pvclock definitions some place arch independent */
66struct pvclock_vcpu_time_info {
67	u32   version;
68	u32   pad0;
69	u64   tsc_timestamp;
70	u64   system_time;
71	u32   tsc_to_system_mul;
72	s8    tsc_shift;
73	u8    flags;
74	u8    pad[2];
75} __attribute__((__packed__)); /* 32 bytes */
76
77/* It is OK to have a 12 bytes struct with no padding because it is packed */
78struct pvclock_wall_clock {
79	u32   version;
80	u32   sec;
81	u32   nsec;
82	u32   sec_hi;
83} __attribute__((__packed__));
84#endif
85
86#endif /* _ASM_ARM_XEN_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#define __HYPERVISOR_platform_op_raw __HYPERVISOR_platform_op
31
32#ifndef __ASSEMBLY__
33/* Explicitly size integers that represent pfns in the interface with
34 * Xen so that we can have one ABI that works for 32 and 64 bit guests.
35 * Note that this means that the xen_pfn_t type may be capable of
36 * representing pfn's which the guest cannot represent in its own pfn
37 * type. However since pfn space is controlled by the guest this is
38 * fine since it simply wouldn't be able to create any sure pfns in
39 * the first place.
40 */
41typedef uint64_t xen_pfn_t;
42#define PRI_xen_pfn "llx"
43typedef uint64_t xen_ulong_t;
44#define PRI_xen_ulong "llx"
45typedef int64_t xen_long_t;
46#define PRI_xen_long "llx"
47/* Guest handles for primitive C types. */
48__DEFINE_GUEST_HANDLE(uchar, unsigned char);
49__DEFINE_GUEST_HANDLE(uint,  unsigned int);
50DEFINE_GUEST_HANDLE(char);
51DEFINE_GUEST_HANDLE(int);
52DEFINE_GUEST_HANDLE(void);
53DEFINE_GUEST_HANDLE(uint64_t);
54DEFINE_GUEST_HANDLE(uint32_t);
55DEFINE_GUEST_HANDLE(xen_pfn_t);
56DEFINE_GUEST_HANDLE(xen_ulong_t);
57
58/* Maximum number of virtual CPUs in multi-processor guests. */
59#define MAX_VIRT_CPUS 1
60
61struct arch_vcpu_info { };
62struct arch_shared_info { };
63
64/* TODO: Move pvclock definitions some place arch independent */
65struct pvclock_vcpu_time_info {
66	u32   version;
67	u32   pad0;
68	u64   tsc_timestamp;
69	u64   system_time;
70	u32   tsc_to_system_mul;
71	s8    tsc_shift;
72	u8    flags;
73	u8    pad[2];
74} __attribute__((__packed__)); /* 32 bytes */
75
76/* It is OK to have a 12 bytes struct with no padding because it is packed */
77struct pvclock_wall_clock {
78	u32   version;
79	u32   sec;
80	u32   nsec;
81	u32   sec_hi;
82} __attribute__((__packed__));
83#endif
84
85#endif /* _ASM_ARM_XEN_INTERFACE_H */