mirror of https://gitee.com/openkylin/linux.git
86 lines
2.5 KiB
C
86 lines
2.5 KiB
C
/******************************************************************************
|
|
* Guest OS interface to ARM Xen.
|
|
*
|
|
* Stefano Stabellini <stefano.stabellini@eu.citrix.com>, Citrix, 2012
|
|
*/
|
|
|
|
#ifndef _ASM_ARM_XEN_INTERFACE_H
|
|
#define _ASM_ARM_XEN_INTERFACE_H
|
|
|
|
#include <linux/types.h>
|
|
|
|
#define uint64_aligned_t uint64_t __attribute__((aligned(8)))
|
|
|
|
#define __DEFINE_GUEST_HANDLE(name, type) \
|
|
typedef struct { union { type *p; uint64_aligned_t q; }; } \
|
|
__guest_handle_ ## name
|
|
|
|
#define DEFINE_GUEST_HANDLE_STRUCT(name) \
|
|
__DEFINE_GUEST_HANDLE(name, struct name)
|
|
#define DEFINE_GUEST_HANDLE(name) __DEFINE_GUEST_HANDLE(name, name)
|
|
#define GUEST_HANDLE(name) __guest_handle_ ## name
|
|
|
|
#define set_xen_guest_handle(hnd, val) \
|
|
do { \
|
|
if (sizeof(hnd) == 8) \
|
|
*(uint64_t *)&(hnd) = 0; \
|
|
(hnd).p = val; \
|
|
} while (0)
|
|
|
|
#define __HYPERVISOR_platform_op_raw __HYPERVISOR_platform_op
|
|
|
|
#ifndef __ASSEMBLY__
|
|
/* Explicitly size integers that represent pfns in the interface with
|
|
* Xen so that we can have one ABI that works for 32 and 64 bit guests.
|
|
* Note that this means that the xen_pfn_t type may be capable of
|
|
* representing pfn's which the guest cannot represent in its own pfn
|
|
* type. However since pfn space is controlled by the guest this is
|
|
* fine since it simply wouldn't be able to create any sure pfns in
|
|
* the first place.
|
|
*/
|
|
typedef uint64_t xen_pfn_t;
|
|
#define PRI_xen_pfn "llx"
|
|
typedef uint64_t xen_ulong_t;
|
|
#define PRI_xen_ulong "llx"
|
|
typedef int64_t xen_long_t;
|
|
#define PRI_xen_long "llx"
|
|
/* Guest handles for primitive C types. */
|
|
__DEFINE_GUEST_HANDLE(uchar, unsigned char);
|
|
__DEFINE_GUEST_HANDLE(uint, unsigned int);
|
|
DEFINE_GUEST_HANDLE(char);
|
|
DEFINE_GUEST_HANDLE(int);
|
|
DEFINE_GUEST_HANDLE(void);
|
|
DEFINE_GUEST_HANDLE(uint64_t);
|
|
DEFINE_GUEST_HANDLE(uint32_t);
|
|
DEFINE_GUEST_HANDLE(xen_pfn_t);
|
|
DEFINE_GUEST_HANDLE(xen_ulong_t);
|
|
|
|
/* Maximum number of virtual CPUs in multi-processor guests. */
|
|
#define MAX_VIRT_CPUS 1
|
|
|
|
struct arch_vcpu_info { };
|
|
struct arch_shared_info { };
|
|
|
|
/* TODO: Move pvclock definitions some place arch independent */
|
|
struct pvclock_vcpu_time_info {
|
|
u32 version;
|
|
u32 pad0;
|
|
u64 tsc_timestamp;
|
|
u64 system_time;
|
|
u32 tsc_to_system_mul;
|
|
s8 tsc_shift;
|
|
u8 flags;
|
|
u8 pad[2];
|
|
} __attribute__((__packed__)); /* 32 bytes */
|
|
|
|
/* It is OK to have a 12 bytes struct with no padding because it is packed */
|
|
struct pvclock_wall_clock {
|
|
u32 version;
|
|
u32 sec;
|
|
u32 nsec;
|
|
u32 sec_hi;
|
|
} __attribute__((__packed__));
|
|
#endif
|
|
|
|
#endif /* _ASM_ARM_XEN_INTERFACE_H */
|