84 lines
2.1 KiB
C
84 lines
2.1 KiB
C
#ifndef _ASM_X86_MSHYPER_H
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#define _ASM_X86_MSHYPER_H
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/hyperv.h>
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struct ms_hyperv_info {
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u32 features;
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u32 misc_features;
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u32 hints;
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};
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extern struct ms_hyperv_info ms_hyperv;
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/*
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* Declare the MSR used to setup pages used to communicate with the hypervisor.
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*/
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union hv_x64_msr_hypercall_contents {
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u64 as_uint64;
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struct {
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u64 enable:1;
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u64 reserved:11;
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u64 guest_physical_address:52;
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};
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};
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/*
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* The guest OS needs to register the guest ID with the hypervisor.
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* The guest ID is a 64 bit entity and the structure of this ID is
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* specified in the Hyper-V specification:
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*
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* msdn.microsoft.com/en-us/library/windows/hardware/ff542653%28v=vs.85%29.aspx
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*
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* While the current guideline does not specify how Linux guest ID(s)
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* need to be generated, our plan is to publish the guidelines for
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* Linux and other guest operating systems that currently are hosted
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* on Hyper-V. The implementation here conforms to this yet
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* unpublished guidelines.
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*
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*
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* Bit(s)
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* 63 - Indicates if the OS is Open Source or not; 1 is Open Source
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* 62:56 - Os Type; Linux is 0x100
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* 55:48 - Distro specific identification
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* 47:16 - Linux kernel version number
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* 15:0 - Distro specific identification
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*
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*
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*/
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#define HV_LINUX_VENDOR_ID 0x8800
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/*
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* Generate the guest ID based on the guideline described above.
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*/
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static inline __u64 generate_guest_id(__u64 d_info1, __u64 kernel_version,
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__u64 d_info2)
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{
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__u64 guest_id = 0;
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guest_id = (((__u64)HV_LINUX_VENDOR_ID) << 56);
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guest_id |= (d_info1 << 48);
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guest_id |= (kernel_version << 16);
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guest_id |= d_info2;
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return guest_id;
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}
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void hyperv_callback_vector(void);
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#ifdef CONFIG_TRACING
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#define trace_hyperv_callback_vector hyperv_callback_vector
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#endif
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void hyperv_vector_handler(struct pt_regs *regs);
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void hv_setup_vmbus_irq(void (*handler)(void));
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void hv_remove_vmbus_irq(void);
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void hv_setup_kexec_handler(void (*handler)(void));
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void hv_remove_kexec_handler(void);
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void hv_setup_crash_handler(void (*handler)(struct pt_regs *regs));
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void hv_remove_crash_handler(void);
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#endif
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