// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2010 - 2015 UNISYS CORPORATION * All rights reserved. */ #ifndef __CONTROLVMCHANNEL_H__ #define __CONTROLVMCHANNEL_H__ #include <linux/uuid.h> #include <linux/visorbus.h> /* {2B3C2D10-7EF5-4ad8-B966-3448B7386B3D} */ #define VISOR_CONTROLVM_CHANNEL_GUID \ GUID_INIT(0x2b3c2d10, 0x7ef5, 0x4ad8, \ 0xb9, 0x66, 0x34, 0x48, 0xb7, 0x38, 0x6b, 0x3d) #define CONTROLVM_MESSAGE_MAX 64 /* * Must increment this whenever you insert or delete fields within this channel * struct. Also increment whenever you change the meaning of fields within this * channel struct so as to break pre-existing software. Note that you can * usually add fields to the END of the channel struct withOUT needing to * increment this. */ #define VISOR_CONTROLVM_CHANNEL_VERSIONID 1 /* Defines for various channel queues */ #define CONTROLVM_QUEUE_REQUEST 0 #define CONTROLVM_QUEUE_RESPONSE 1 #define CONTROLVM_QUEUE_EVENT 2 #define CONTROLVM_QUEUE_ACK 3 /* Max num of messages stored during IOVM creation to be reused after crash */ #define CONTROLVM_CRASHMSG_MAX 2 /* * struct visor_segment_state * @enabled: May enter other states. * @active: Assigned to active partition. * @alive: Configure message sent to service/server. * @revoked: Similar to partition state ShuttingDown. * @allocated: Memory (device/port number) has been selected by Command. * @known: Has been introduced to the service/guest partition. * @ready: Service/Guest partition has responded to introduction. * @operating: Resource is configured and operating. * @reserved: Natural alignment. * * Note: Don't use high bit unless we need to switch to ushort which is * non-compliant. */ struct visor_segment_state { u16 enabled:1; u16 active:1; u16 alive:1; u16 revoked:1; u16 allocated:1; u16 known:1; u16 ready:1; u16 operating:1; u16 reserved:8; } __packed; static const struct visor_segment_state segment_state_running = { 1, 1, 1, 0, 1, 1, 1, 1 }; static const struct visor_segment_state segment_state_paused = { 1, 1, 1, 0, 1, 1, 1, 0 }; static const struct visor_segment_state segment_state_standby = { 1, 1, 0, 0, 1, 1, 1, 0 }; /* * enum controlvm_id * @CONTROLVM_INVALID: * @CONTROLVM_BUS_CREATE: CP --> SP, GP. * @CONTROLVM_BUS_DESTROY: CP --> SP, GP. * @CONTROLVM_BUS_CONFIGURE: CP --> SP. * @CONTROLVM_BUS_CHANGESTATE: CP --> SP, GP. * @CONTROLVM_BUS_CHANGESTATE_EVENT: SP, GP --> CP. * @CONTROLVM_DEVICE_CREATE: CP --> SP, GP. * @CONTROLVM_DEVICE_DESTROY: CP --> SP, GP. * @CONTROLVM_DEVICE_CONFIGURE: CP --> SP. * @CONTROLVM_DEVICE_CHANGESTATE: CP --> SP, GP. * @CONTROLVM_DEVICE_CHANGESTATE_EVENT: SP, GP --> CP. * @CONTROLVM_DEVICE_RECONFIGURE: CP --> Boot. * @CONTROLVM_CHIPSET_INIT: CP --> SP, GP. * @CONTROLVM_CHIPSET_STOP: CP --> SP, GP. * @CONTROLVM_CHIPSET_READY: CP --> SP. * @CONTROLVM_CHIPSET_SELFTEST: CP --> SP. * * Ids for commands that may appear in either queue of a ControlVm channel. * * Commands that are initiated by the command partition (CP), by an IO or * console service partition (SP), or by a guest partition (GP) are: * - issued on the RequestQueue queue (q #0) in the ControlVm channel * - responded to on the ResponseQueue queue (q #1) in the ControlVm channel * * Events that are initiated by an IO or console service partition (SP) or * by a guest partition (GP) are: * - issued on the EventQueue queue (q #2) in the ControlVm channel * - responded to on the EventAckQueue queue (q #3) in the ControlVm channel */ enum controlvm_id { CONTROLVM_INVALID = 0, /* * SWITCH commands required Parameter: SwitchNumber. * BUS commands required Parameter: BusNumber */ CONTROLVM_BUS_CREATE = 0x101, CONTROLVM_BUS_DESTROY = 0x102, CONTROLVM_BUS_CONFIGURE = 0x104, CONTROLVM_BUS_CHANGESTATE = 0x105, CONTROLVM_BUS_CHANGESTATE_EVENT = 0x106, /* DEVICE commands required Parameter: BusNumber, DeviceNumber */ CONTROLVM_DEVICE_CREATE = 0x201, CONTROLVM_DEVICE_DESTROY = 0x202, CONTROLVM_DEVICE_CONFIGURE = 0x203, CONTROLVM_DEVICE_CHANGESTATE = 0x204, CONTROLVM_DEVICE_CHANGESTATE_EVENT = 0x205, CONTROLVM_DEVICE_RECONFIGURE = 0x206, /* CHIPSET commands */ CONTROLVM_CHIPSET_INIT = 0x301, CONTROLVM_CHIPSET_STOP = 0x302, CONTROLVM_CHIPSET_READY = 0x304, CONTROLVM_CHIPSET_SELFTEST = 0x305, }; /* * struct irq_info * @reserved1: Natural alignment purposes * @recv_irq_handle: Specifies interrupt handle. It is used to retrieve the * corresponding interrupt pin from Monitor; and the interrupt * pin is used to connect to the corresponding interrupt. * Used by IOPart-GP only. * @recv_irq_vector: Specifies interrupt vector. It, interrupt pin, and shared * are used to connect to the corresponding interrupt. * Used by IOPart-GP only. * @recv_irq_shared: Specifies if the recvInterrupt is shared. It, interrupt * pin and vector are used to connect to 0 = not shared; * 1 = shared the corresponding interrupt. * Used by IOPart-GP only. * @reserved: Natural alignment purposes */ struct irq_info { u64 reserved1; u64 recv_irq_handle; u32 recv_irq_vector; u8 recv_irq_shared; u8 reserved[3]; } __packed; /* * struct efi_visor_indication * @boot_to_fw_ui: Stop in UEFI UI * @clear_nvram: Clear NVRAM * @clear_cmos: Clear CMOS * @boot_to_tool: Run install tool * @reserved: Natural alignment */ struct efi_visor_indication { u64 boot_to_fw_ui:1; u64 clear_nvram:1; u64 clear_cmos:1; u64 boot_to_tool:1; /* Remaining bits are available */ u64 reserved:60; } __packed; enum visor_chipset_feature { VISOR_CHIPSET_FEATURE_REPLY = 0x00000001, VISOR_CHIPSET_FEATURE_PARA_HOTPLUG = 0x00000002, }; /* * struct controlvm_message_header * @id: See CONTROLVM_ID. * @message_size: Includes size of this struct + size of message. * @segment_index: Index of segment containing Vm message/information. * @completion_status: Error status code or result of message completion. * @struct flags: * @failed: =1 in a response to signify failure. * @response_expected: =1 in all messages that expect a response. * @server: =1 in all bus & device-related messages where the * message receiver is to act as the bus or device * server. * @test_message: =1 for testing use only (Control and Command * ignore this). * @partial_completion: =1 if there are forthcoming responses/acks * associated with this message. * @preserve: =1 this is to let us know to preserve channel * contents. * @writer_in_diag: =1 the DiagWriter is active in the Diagnostic * Partition. * @reserve: Natural alignment. * @reserved: Natural alignment. * @message_handle: Identifies the particular message instance. * @payload_vm_offset: Offset of payload area from start of this instance. * @payload_max_bytes: Maximum bytes allocated in payload area of ControlVm * segment. * @payload_bytes: Actual number of bytes of payload area to copy between * IO/Command. If non-zero, there is a payload to copy. * * This is the common structure that is at the beginning of every * ControlVm message (both commands and responses) in any ControlVm * queue. Commands are easily distinguished from responses by * looking at the flags.response field. */ struct controlvm_message_header { u32 id; /* * For requests, indicates the message type. For responses, indicates * the type of message we are responding to. */ u32 message_size; u32 segment_index; u32 completion_status; struct { u32 failed:1; u32 response_expected:1; u32 server:1; u32 test_message:1; u32 partial_completion:1; u32 preserve:1; u32 writer_in_diag:1; u32 reserve:25; } __packed flags; u32 reserved; u64 message_handle; u64 payload_vm_offset; u32 payload_max_bytes; u32 payload_bytes; } __packed; /* * struct controlvm_packet_device_create - For CONTROLVM_DEVICE_CREATE * @bus_no: Bus # (0..n-1) from the msg receiver's end. * @dev_no: Bus-relative (0..n-1) device number. * @channel_addr: Guest physical address of the channel, which can be * dereferenced by the receiver of this ControlVm command. * @channel_bytes: Specifies size of the channel in bytes. * @data_type_uuid: Specifies format of data in channel. * @dev_inst_uuid: Instance guid for the device. * @irq_info intr: Specifies interrupt information. */ struct controlvm_packet_device_create { u32 bus_no; u32 dev_no; u64 channel_addr; u64 channel_bytes; guid_t data_type_guid; guid_t dev_inst_guid; struct irq_info intr; } __packed; /* * struct controlvm_packet_device_configure - For CONTROLVM_DEVICE_CONFIGURE * @bus_no: Bus number (0..n-1) from the msg receiver's perspective. * @dev_no: Bus-relative (0..n-1) device number. */ struct controlvm_packet_device_configure { u32 bus_no; u32 dev_no; } __packed; /* Total 128 bytes */ struct controlvm_message_device_create { struct controlvm_message_header header; struct controlvm_packet_device_create packet; } __packed; /* Total 56 bytes */ struct controlvm_message_device_configure { struct controlvm_message_header header; struct controlvm_packet_device_configure packet; } __packed; /* * struct controlvm_message_packet - This is the format for a message in any * ControlVm queue. * @struct create_bus: For CONTROLVM_BUS_CREATE. * @bus_no: Bus # (0..n-1) from the msg receiver's perspective. * @dev_count: Indicates the max number of devices on this bus. * @channel_addr: Guest physical address of the channel, which can be * dereferenced by the receiver of this ControlVM * command. * @channel_bytes: Size of the channel. * @bus_data_type_uuid: Indicates format of data in bus channel. * @bus_inst_uuid: Instance uuid for the bus. * * @struct destroy_bus: For CONTROLVM_BUS_DESTROY. * @bus_no: Bus # (0..n-1) from the msg receiver's perspective. * @reserved: Natural alignment purposes. * * @struct configure_bus: For CONTROLVM_BUS_CONFIGURE. * @bus_no: Bus # (0..n-1) from the receiver's perspective. * @reserved1: For alignment purposes. * @guest_handle: This is used to convert guest physical address to * physical address. * @recv_bus_irq_handle: Specifies interrupt info. It is used by SP to * register to receive interrupts from the CP. This * interrupt is used for bus level notifications. * The corresponding sendBusInterruptHandle is kept * in CP. * * @struct create_device: For CONTROLVM_DEVICE_CREATE. * * @struct destroy_device: For CONTROLVM_DEVICE_DESTROY. * @bus_no: Bus # (0..n-1) from the msg receiver's perspective. * @dev_no: Bus-relative (0..n-1) device number. * * @struct configure_device: For CONTROLVM_DEVICE_CONFIGURE. * * @struct reconfigure_device: For CONTROLVM_DEVICE_RECONFIGURE. * @bus_no: Bus # (0..n-1) from the msg receiver's perspective. * @dev_no: Bus-relative (0..n-1) device number. * * @struct bus_change_state: For CONTROLVM_BUS_CHANGESTATE. * @bus_no: * @struct state: * @reserved: Natural alignment purposes. * * @struct device_change_state: For CONTROLVM_DEVICE_CHANGESTATE. * @bus_no: * @dev_no: * @struct state: * @struct flags: * @phys_device: =1 if message is for a physical device. * @reserved: Natural alignment. * @reserved1: Natural alignment. * @reserved: Natural alignment purposes. * * @struct device_change_state_event: For CONTROLVM_DEVICE_CHANGESTATE_EVENT. * @bus_no: * @dev_no: * @struct state: * @reserved: Natural alignment purposes. * * @struct init_chipset: For CONTROLVM_CHIPSET_INIT. * @bus_count: Indicates the max number of busses. * @switch_count: Indicates the max number of switches. * @enum features: * @platform_number: * * @struct chipset_selftest: For CONTROLVM_CHIPSET_SELFTEST. * @options: Reserved. * @test: Bit 0 set to run embedded selftest. * * @addr: A physical address of something, that can be dereferenced by the * receiver of this ControlVm command. * * @handle: A handle of something (depends on command id). */ struct controlvm_message_packet { union { struct { u32 bus_no; u32 dev_count; u64 channel_addr; u64 channel_bytes; guid_t bus_data_type_guid; guid_t bus_inst_guid; } __packed create_bus; struct { u32 bus_no; u32 reserved; } __packed destroy_bus; struct { u32 bus_no; u32 reserved1; u64 guest_handle; u64 recv_bus_irq_handle; } __packed configure_bus; struct controlvm_packet_device_create create_device; struct { u32 bus_no; u32 dev_no; } __packed destroy_device; struct controlvm_packet_device_configure configure_device; struct { u32 bus_no; u32 dev_no; } __packed reconfigure_device; struct { u32 bus_no; struct visor_segment_state state; u8 reserved[2]; } __packed bus_change_state; struct { u32 bus_no; u32 dev_no; struct visor_segment_state state; struct { u32 phys_device:1; u32 reserved:31; u32 reserved1; } __packed flags; u8 reserved[2]; } __packed device_change_state; struct { u32 bus_no; u32 dev_no; struct visor_segment_state state; u8 reserved[6]; } __packed device_change_state_event; struct { u32 bus_count; u32 switch_count; enum visor_chipset_feature features; u32 platform_number; } __packed init_chipset; struct { u32 options; u32 test; } __packed chipset_selftest; u64 addr; u64 handle; }; } __packed; /* All messages in any ControlVm queue have this layout. */ struct controlvm_message { struct controlvm_message_header hdr; struct controlvm_message_packet cmd; } __packed; /* * struct visor_controlvm_channel * @struct header: * @gp_controlvm: Guest phys addr of this channel. * @gp_partition_tables: Guest phys addr of partition tables. * @gp_diag_guest: Guest phys addr of diagnostic channel. * @gp_boot_romdisk: Guest phys addr of (read* only) Boot * ROM disk. * @gp_boot_ramdisk: Guest phys addr of writable Boot RAM * disk. * @gp_acpi_table: Guest phys addr of acpi table. * @gp_control_channel: Guest phys addr of control channel. * @gp_diag_romdisk: Guest phys addr of diagnostic ROM disk. * @gp_nvram: Guest phys addr of NVRAM channel. * @request_payload_offset: Offset to request payload area. * @event_payload_offset: Offset to event payload area. * @request_payload_bytes: Bytes available in request payload area. * @event_payload_bytes: Bytes available in event payload area. * @control_channel_bytes: * @nvram_channel_bytes: Bytes in PartitionNvram segment. * @message_bytes: sizeof(CONTROLVM_MESSAGE). * @message_count: CONTROLVM_MESSAGE_MAX. * @gp_smbios_table: Guest phys addr of SMBIOS tables. * @gp_physical_smbios_table: Guest phys addr of SMBIOS table. * @gp_reserved: VISOR_MAX_GUESTS_PER_SERVICE. * @virtual_guest_firmware_image_base: Guest physical address of EFI firmware * image base. * @virtual_guest_firmware_entry_point: Guest physical address of EFI firmware * entry point. * @virtual_guest_firmware_image_size: Guest EFI firmware image size. * @virtual_guest_firmware_boot_base: GPA = 1MB where EFI firmware image is * copied to. * @virtual_guest_image_base: * @virtual_guest_image_size: * @prototype_control_channel_offset: * @virtual_guest_partition_handle: * @restore_action: Restore Action field to restore the * guest partition. * @dump_action: For Windows guests it shows if the * visordisk is in dump mode. * @nvram_fail_count: * @saved_crash_message_count: = CONTROLVM_CRASHMSG_MAX. * @saved_crash_message_offset: Offset to request payload area needed * for crash dump. * @installation_error: Type of error encountered during * installation. * @installation_text_id: Id of string to display. * @installation_remaining_steps: Number of remaining installation steps * (for progress bars). * @tool_action: VISOR_TOOL_ACTIONS Installation Action * field. * @reserved: Alignment. * @struct efi_visor_ind: * @sp_reserved: * @reserved2: Force signals to begin on 128-byte * cache line. * @struct request_queue: Guest partition uses this queue to send * requests to Control. * @struct response_queue: Control uses this queue to respond to * service or guest partition request. * @struct event_queue: Control uses this queue to send events * to guest partition. * @struct event_ack_queue: Service or guest partition uses this * queue to ack Control events. * @struct request_msg: Request fixed-size message pool - * does not include payload. * @struct response_msg: Response fixed-size message pool - * does not include payload. * @struct event_msg: Event fixed-size message pool - * does not include payload. * @struct event_ack_msg: Ack fixed-size message pool - * does not include payload. * @struct saved_crash_msg: Message stored during IOVM creation to * be reused after crash. */ struct visor_controlvm_channel { struct channel_header header; u64 gp_controlvm; u64 gp_partition_tables; u64 gp_diag_guest; u64 gp_boot_romdisk; u64 gp_boot_ramdisk; u64 gp_acpi_table; u64 gp_control_channel; u64 gp_diag_romdisk; u64 gp_nvram; u64 request_payload_offset; u64 event_payload_offset; u32 request_payload_bytes; u32 event_payload_bytes; u32 control_channel_bytes; u32 nvram_channel_bytes; u32 message_bytes; u32 message_count; u64 gp_smbios_table; u64 gp_physical_smbios_table; char gp_reserved[2688]; u64 virtual_guest_firmware_image_base; u64 virtual_guest_firmware_entry_point; u64 virtual_guest_firmware_image_size; u64 virtual_guest_firmware_boot_base; u64 virtual_guest_image_base; u64 virtual_guest_image_size; u64 prototype_control_channel_offset; u64 virtual_guest_partition_handle; u16 restore_action; u16 dump_action; u16 nvram_fail_count; u16 saved_crash_message_count; u32 saved_crash_message_offset; u32 installation_error; u32 installation_text_id; u16 installation_remaining_steps; u8 tool_action; u8 reserved; struct efi_visor_indication efi_visor_ind; u32 sp_reserved; u8 reserved2[28]; struct signal_queue_header request_queue; struct signal_queue_header response_queue; struct signal_queue_header event_queue; struct signal_queue_header event_ack_queue; struct controlvm_message request_msg[CONTROLVM_MESSAGE_MAX]; struct controlvm_message response_msg[CONTROLVM_MESSAGE_MAX]; struct controlvm_message event_msg[CONTROLVM_MESSAGE_MAX]; struct controlvm_message event_ack_msg[CONTROLVM_MESSAGE_MAX]; struct controlvm_message saved_crash_msg[CONTROLVM_CRASHMSG_MAX]; } __packed; /* * struct visor_controlvm_parameters_header * * The following header will be located at the beginning of PayloadVmOffset for * various ControlVm commands. The receiver of a ControlVm command with a * PayloadVmOffset will dereference this address and then use connection_offset, * initiator_offset, and target_offset to get the location of UTF-8 formatted * strings that can be parsed to obtain command-specific information. The value * of total_length should equal PayloadBytes. The format of the strings at * PayloadVmOffset will take different forms depending on the message. */ struct visor_controlvm_parameters_header { u32 total_length; u32 header_length; u32 connection_offset; u32 connection_length; u32 initiator_offset; u32 initiator_length; u32 target_offset; u32 target_length; u32 client_offset; u32 client_length; u32 name_offset; u32 name_length; guid_t id; u32 revision; /* Natural alignment */ u32 reserved; } __packed; /* General Errors------------------------------------------------------[0-99] */ #define CONTROLVM_RESP_SUCCESS 0 #define CONTROLVM_RESP_ALREADY_DONE 1 #define CONTROLVM_RESP_IOREMAP_FAILED 2 #define CONTROLVM_RESP_KMALLOC_FAILED 3 #define CONTROLVM_RESP_ID_UNKNOWN 4 #define CONTROLVM_RESP_ID_INVALID_FOR_CLIENT 5 /* CONTROLVM_INIT_CHIPSET-------------------------------------------[100-199] */ #define CONTROLVM_RESP_CLIENT_SWITCHCOUNT_NONZERO 100 #define CONTROLVM_RESP_EXPECTED_CHIPSET_INIT 101 /* Maximum Limit----------------------------------------------------[200-299] */ /* BUS_CREATE */ #define CONTROLVM_RESP_ERROR_MAX_BUSES 201 /* DEVICE_CREATE */ #define CONTROLVM_RESP_ERROR_MAX_DEVICES 202 /* Payload and Parameter Related------------------------------------[400-499] */ /* SWITCH_ATTACHEXTPORT, DEVICE_CONFIGURE */ #define CONTROLVM_RESP_PAYLOAD_INVALID 400 /* Multiple */ #define CONTROLVM_RESP_INITIATOR_PARAMETER_INVALID 401 /* DEVICE_CONFIGURE */ #define CONTROLVM_RESP_TARGET_PARAMETER_INVALID 402 /* DEVICE_CONFIGURE */ #define CONTROLVM_RESP_CLIENT_PARAMETER_INVALID 403 /* Specified[Packet Structure] Value--------------------------------[500-599] */ /* SWITCH_ATTACHINTPORT */ /* BUS_CONFIGURE, DEVICE_CREATE, DEVICE_CONFIG, DEVICE_DESTROY */ #define CONTROLVM_RESP_BUS_INVALID 500 /* SWITCH_ATTACHINTPORT*/ /* DEVICE_CREATE, DEVICE_CONFIGURE, DEVICE_DESTROY */ #define CONTROLVM_RESP_DEVICE_INVALID 501 /* DEVICE_CREATE, DEVICE_CONFIGURE */ #define CONTROLVM_RESP_CHANNEL_INVALID 502 /* Partition Driver Callback Interface------------------------------[600-699] */ /* BUS_CREATE, BUS_DESTROY, DEVICE_CREATE, DEVICE_DESTROY */ #define CONTROLVM_RESP_VIRTPCI_DRIVER_FAILURE 604 /* Unable to invoke VIRTPCI callback. VIRTPCI Callback returned error. */ /* BUS_CREATE, BUS_DESTROY, DEVICE_CREATE, DEVICE_DESTROY */ #define CONTROLVM_RESP_VIRTPCI_DRIVER_CALLBACK_ERROR 605 /* Generic device callback returned error. */ /* SWITCH_ATTACHEXTPORT, SWITCH_DETACHEXTPORT, DEVICE_CONFIGURE */ #define CONTROLVM_RESP_GENERIC_DRIVER_CALLBACK_ERROR 606 /* Bus Related------------------------------------------------------[700-799] */ /* BUS_DESTROY */ #define CONTROLVM_RESP_ERROR_BUS_DEVICE_ATTACHED 700 /* Channel Related--------------------------------------------------[800-899] */ /* GET_CHANNELINFO, DEVICE_DESTROY */ #define CONTROLVM_RESP_CHANNEL_TYPE_UNKNOWN 800 /* DEVICE_CREATE */ #define CONTROLVM_RESP_CHANNEL_SIZE_TOO_SMALL 801 /* Chipset Shutdown Related---------------------------------------[1000-1099] */ #define CONTROLVM_RESP_CHIPSET_SHUTDOWN_FAILED 1000 #define CONTROLVM_RESP_CHIPSET_SHUTDOWN_ALREADY_ACTIVE 1001 /* Chipset Stop Related-------------------------------------------[1100-1199] */ #define CONTROLVM_RESP_CHIPSET_STOP_FAILED_BUS 1100 #define CONTROLVM_RESP_CHIPSET_STOP_FAILED_SWITCH 1101 /* Device Related-------------------------------------------------[1400-1499] */ #define CONTROLVM_RESP_DEVICE_UDEV_TIMEOUT 1400 /* __CONTROLVMCHANNEL_H__ */ #endif