diff options
Diffstat (limited to 'drivers/hv/hyperv_vmbus.h')
-rw-r--r-- | drivers/hv/hyperv_vmbus.h | 299 |
1 files changed, 5 insertions, 294 deletions
diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h index 0675b395ce5c..86b56b677dc3 100644 --- a/drivers/hv/hyperv_vmbus.h +++ b/drivers/hv/hyperv_vmbus.h @@ -40,96 +40,12 @@ */ #define HV_UTIL_NEGO_TIMEOUT 55 -/* - * The below CPUID leaves are present if VersionAndFeatures.HypervisorPresent - * is set by CPUID(HVCPUID_VERSION_FEATURES). - */ -enum hv_cpuid_function { - HVCPUID_VERSION_FEATURES = 0x00000001, - HVCPUID_VENDOR_MAXFUNCTION = 0x40000000, - HVCPUID_INTERFACE = 0x40000001, - - /* - * The remaining functions depend on the value of - * HVCPUID_INTERFACE - */ - HVCPUID_VERSION = 0x40000002, - HVCPUID_FEATURES = 0x40000003, - HVCPUID_ENLIGHTENMENT_INFO = 0x40000004, - HVCPUID_IMPLEMENTATION_LIMITS = 0x40000005, -}; - -#define HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE 0x400 -#define HV_X64_MSR_CRASH_P0 0x40000100 -#define HV_X64_MSR_CRASH_P1 0x40000101 -#define HV_X64_MSR_CRASH_P2 0x40000102 -#define HV_X64_MSR_CRASH_P3 0x40000103 -#define HV_X64_MSR_CRASH_P4 0x40000104 -#define HV_X64_MSR_CRASH_CTL 0x40000105 -#define HV_CRASH_CTL_CRASH_NOTIFY (1ULL << 63) -/* Define version of the synthetic interrupt controller. */ -#define HV_SYNIC_VERSION (1) - -#define HV_ANY_VP (0xFFFFFFFF) - -/* Define synthetic interrupt controller flag constants. */ -#define HV_EVENT_FLAGS_COUNT (256 * 8) #define HV_EVENT_FLAGS_BYTE_COUNT (256) #define HV_EVENT_FLAGS_DWORD_COUNT (256 / sizeof(u32)) -/* Define invalid partition identifier. */ -#define HV_PARTITION_ID_INVALID ((u64)0x0) - -/* Define port type. */ -enum hv_port_type { - HVPORT_MSG = 1, - HVPORT_EVENT = 2, - HVPORT_MONITOR = 3 -}; - -/* Define port information structure. */ -struct hv_port_info { - enum hv_port_type port_type; - u32 padding; - union { - struct { - u32 target_sint; - u32 target_vp; - u64 rsvdz; - } message_port_info; - struct { - u32 target_sint; - u32 target_vp; - u16 base_flag_number; - u16 flag_count; - u32 rsvdz; - } event_port_info; - struct { - u64 monitor_address; - u64 rsvdz; - } monitor_port_info; - }; -}; - -struct hv_connection_info { - enum hv_port_type port_type; - u32 padding; - union { - struct { - u64 rsvdz; - } message_connection_info; - struct { - u64 rsvdz; - } event_connection_info; - struct { - u64 monitor_address; - } monitor_connection_info; - }; -}; - /* * Timer configuration register. */ @@ -146,8 +62,6 @@ union hv_timer_config { }; }; -/* Define the number of message buffers associated with each port. */ -#define HV_PORT_MESSAGE_BUFFER_COUNT (16) /* Define the synthetic interrupt controller event flags format. */ union hv_synic_event_flags { @@ -155,11 +69,6 @@ union hv_synic_event_flags { u32 flags32[HV_EVENT_FLAGS_DWORD_COUNT]; }; -/* Define the synthetic interrupt flags page layout. */ -struct hv_synic_event_flags_page { - union hv_synic_event_flags sintevent_flags[HV_SYNIC_SINT_COUNT]; -}; - /* Define SynIC control register. */ union hv_synic_scontrol { u64 as_uint64; @@ -261,6 +170,8 @@ struct hv_monitor_page { u8 rsvdz4[1984]; }; +#define HV_HYPERCALL_PARAM_ALIGN sizeof(u64) + /* Definition of the hv_post_message hypercall input structure. */ struct hv_input_post_message { union hv_connection_id connectionid; @@ -270,56 +181,6 @@ struct hv_input_post_message { u64 payload[HV_MESSAGE_PAYLOAD_QWORD_COUNT]; }; -/* - * Versioning definitions used for guests reporting themselves to the - * hypervisor, and visa versa. - */ - -/* Version info reported by guest OS's */ -enum hv_guest_os_vendor { - HVGUESTOS_VENDOR_MICROSOFT = 0x0001 -}; - -enum hv_guest_os_microsoft_ids { - HVGUESTOS_MICROSOFT_UNDEFINED = 0x00, - HVGUESTOS_MICROSOFT_MSDOS = 0x01, - HVGUESTOS_MICROSOFT_WINDOWS3X = 0x02, - HVGUESTOS_MICROSOFT_WINDOWS9X = 0x03, - HVGUESTOS_MICROSOFT_WINDOWSNT = 0x04, - HVGUESTOS_MICROSOFT_WINDOWSCE = 0x05 -}; - -/* - * Declare the MSR used to identify the guest OS. - */ -#define HV_X64_MSR_GUEST_OS_ID 0x40000000 - -union hv_x64_msr_guest_os_id_contents { - u64 as_uint64; - struct { - u64 build_number:16; - u64 service_version:8; /* Service Pack, etc. */ - u64 minor_version:8; - u64 major_version:8; - u64 os_id:8; /* enum hv_guest_os_microsoft_ids (if Vendor=MS) */ - u64 vendor_id:16; /* enum hv_guest_os_vendor */ - }; -}; - -/* - * Declare the MSR used to setup pages used to communicate with the hypervisor. - */ -#define HV_X64_MSR_HYPERCALL 0x40000001 - -union hv_x64_msr_hypercall_contents { - u64 as_uint64; - struct { - u64 enable:1; - u64 reserved:11; - u64 guest_physical_address:52; - }; -}; - enum { VMBUS_MESSAGE_CONNECTION_ID = 1, @@ -331,105 +192,12 @@ enum { VMBUS_MESSAGE_SINT = 2, }; -/* #defines */ - -#define HV_PRESENT_BIT 0x80000000 - -/* - * The guest OS needs to register the guest ID with the hypervisor. - * The guest ID is a 64 bit entity and the structure of this ID is - * specified in the Hyper-V specification: - * - * http://msdn.microsoft.com/en-us/library/windows/hardware/ff542653%28v=vs.85%29.aspx - * - * While the current guideline does not specify how Linux guest ID(s) - * need to be generated, our plan is to publish the guidelines for - * Linux and other guest operating systems that currently are hosted - * on Hyper-V. The implementation here conforms to this yet - * unpublished guidelines. - * - * - * Bit(s) - * 63 - Indicates if the OS is Open Source or not; 1 is Open Source - * 62:56 - Os Type; Linux is 0x100 - * 55:48 - Distro specific identification - * 47:16 - Linux kernel version number - * 15:0 - Distro specific identification - * - * - */ - -#define HV_LINUX_VENDOR_ID 0x8100 - -/* - * Generate the guest ID based on the guideline described above. - */ - -static inline __u64 generate_guest_id(__u8 d_info1, __u32 kernel_version, - __u16 d_info2) -{ - __u64 guest_id = 0; - - guest_id = (((__u64)HV_LINUX_VENDOR_ID) << 48); - guest_id |= (((__u64)(d_info1)) << 48); - guest_id |= (((__u64)(kernel_version)) << 16); - guest_id |= ((__u64)(d_info2)); - - return guest_id; -} - - -#define HV_CPU_POWER_MANAGEMENT (1 << 0) -#define HV_RECOMMENDATIONS_MAX 4 - -#define HV_X64_MAX 5 -#define HV_CAPS_MAX 8 - - -#define HV_HYPERCALL_PARAM_ALIGN sizeof(u64) - - -/* Service definitions */ - -#define HV_SERVICE_PARENT_PORT (0) -#define HV_SERVICE_PARENT_CONNECTION (0) - -#define HV_SERVICE_CONNECT_RESPONSE_SUCCESS (0) -#define HV_SERVICE_CONNECT_RESPONSE_INVALID_PARAMETER (1) -#define HV_SERVICE_CONNECT_RESPONSE_UNKNOWN_SERVICE (2) -#define HV_SERVICE_CONNECT_RESPONSE_CONNECTION_REJECTED (3) - -#define HV_SERVICE_CONNECT_REQUEST_MESSAGE_ID (1) -#define HV_SERVICE_CONNECT_RESPONSE_MESSAGE_ID (2) -#define HV_SERVICE_DISCONNECT_REQUEST_MESSAGE_ID (3) -#define HV_SERVICE_DISCONNECT_RESPONSE_MESSAGE_ID (4) -#define HV_SERVICE_MAX_MESSAGE_ID (4) - -#define HV_SERVICE_PROTOCOL_VERSION (0x0010) -#define HV_CONNECT_PAYLOAD_BYTE_COUNT 64 - -/* #define VMBUS_REVISION_NUMBER 6 */ - -/* Our local vmbus's port and connection id. Anything >0 is fine */ -/* #define VMBUS_PORT_ID 11 */ - -/* 628180B8-308D-4c5e-B7DB-1BEB62E62EF4 */ -static const uuid_le VMBUS_SERVICE_ID = { - .b = { - 0xb8, 0x80, 0x81, 0x62, 0x8d, 0x30, 0x5e, 0x4c, - 0xb7, 0xdb, 0x1b, 0xeb, 0x62, 0xe6, 0x2e, 0xf4 - }, -}; - - - struct hv_context { /* We only support running on top of Hyper-V * So at this point this really can only contain the Hyper-V ID */ u64 guestid; - void *hypercall_page; void *tsc_page; bool synic_initialized; @@ -475,14 +243,6 @@ struct hv_context { extern struct hv_context hv_context; -struct ms_hyperv_tsc_page { - volatile u32 tsc_sequence; - u32 reserved1; - volatile u64 tsc_scale; - volatile s64 tsc_offset; - u64 reserved2[509]; -}; - struct hv_ring_buffer_debug_info { u32 current_interrupt_mask; u32 current_read_index; @@ -495,8 +255,6 @@ struct hv_ring_buffer_debug_info { extern int hv_init(void); -extern void hv_cleanup(bool crash); - extern int hv_post_message(union hv_connection_id connection_id, enum hv_message_type message_type, void *payload, size_t payload_size); @@ -505,20 +263,12 @@ extern int hv_synic_alloc(void); extern void hv_synic_free(void); -extern void hv_synic_init(void *irqarg); +extern int hv_synic_init(unsigned int cpu); -extern void hv_synic_cleanup(void *arg); +extern int hv_synic_cleanup(unsigned int cpu); extern void hv_synic_clockevents_cleanup(void); -/* - * Host version information. - */ -extern unsigned int host_info_eax; -extern unsigned int host_info_ebx; -extern unsigned int host_info_ecx; -extern unsigned int host_info_edx; - /* Interface */ @@ -625,41 +375,6 @@ struct vmbus_channel_message_table_entry { extern struct vmbus_channel_message_table_entry channel_message_table[CHANNELMSG_COUNT]; -/* Free the message slot and signal end-of-message if required */ -static inline void vmbus_signal_eom(struct hv_message *msg, u32 old_msg_type) -{ - /* - * On crash we're reading some other CPU's message page and we need - * to be careful: this other CPU may already had cleared the header - * and the host may already had delivered some other message there. - * In case we blindly write msg->header.message_type we're going - * to lose it. We can still lose a message of the same type but - * we count on the fact that there can only be one - * CHANNELMSG_UNLOAD_RESPONSE and we don't care about other messages - * on crash. - */ - if (cmpxchg(&msg->header.message_type, old_msg_type, - HVMSG_NONE) != old_msg_type) - return; - - /* - * Make sure the write to MessageType (ie set to - * HVMSG_NONE) happens before we read the - * MessagePending and EOMing. Otherwise, the EOMing - * will not deliver any more messages since there is - * no empty slot - */ - mb(); - - if (msg->header.message_flags.msg_pending) { - /* - * This will cause message queue rescan to - * possibly deliver another msg from the - * hypervisor - */ - wrmsrl(HV_X64_MSR_EOM, 0); - } -} /* General vmbus interface */ @@ -670,10 +385,6 @@ struct hv_device *vmbus_device_create(const uuid_le *type, int vmbus_device_register(struct hv_device *child_device_obj); void vmbus_device_unregister(struct hv_device *device_obj); -/* static void */ -/* VmbusChildDeviceDestroy( */ -/* struct hv_device *); */ - struct vmbus_channel *relid2channel(u32 relid); void vmbus_free_channels(void); @@ -683,7 +394,7 @@ void vmbus_free_channels(void); int vmbus_connect(void); void vmbus_disconnect(void); -int vmbus_post_msg(void *buffer, size_t buflen); +int vmbus_post_msg(void *buffer, size_t buflen, bool can_sleep); void vmbus_on_event(unsigned long data); void vmbus_on_msg_dpc(unsigned long data); |