/* SPDX-License-Identifier: GPL-2.0 */ /****************************************************************************** * 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 */