1 /* Copyright (C) 2010 - 2015 UNISYS CORPORATION
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
11 * NON INFRINGEMENT. See the GNU General Public License for more
15 #ifndef __CONTROLVMCHANNEL_H__
16 #define __CONTROLVMCHANNEL_H__
18 #include <linux/uuid.h>
21 /* {2B3C2D10-7EF5-4ad8-B966-3448B7386B3D} */
22 #define SPAR_CONTROLVM_CHANNEL_PROTOCOL_UUID \
23 UUID_LE(0x2b3c2d10, 0x7ef5, 0x4ad8, \
24 0xb9, 0x66, 0x34, 0x48, 0xb7, 0x38, 0x6b, 0x3d)
26 #define ULTRA_CONTROLVM_CHANNEL_PROTOCOL_SIGNATURE \
27 ULTRA_CHANNEL_PROTOCOL_SIGNATURE
28 #define CONTROLVM_MESSAGE_MAX 64
30 /* Must increment this whenever you insert or delete fields within
31 * this channel struct. Also increment whenever you change the meaning
32 * of fields within this channel struct so as to break pre-existing
33 * software. Note that you can usually add fields to the END of the
34 * channel struct withOUT needing to increment this.
36 #define ULTRA_CONTROLVM_CHANNEL_PROTOCOL_VERSIONID 1
38 #define SPAR_CONTROLVM_CHANNEL_OK_CLIENT(ch) \
39 spar_check_channel_client(ch, \
40 SPAR_CONTROLVM_CHANNEL_PROTOCOL_UUID, \
42 sizeof(struct spar_controlvm_channel_protocol), \
43 ULTRA_CONTROLVM_CHANNEL_PROTOCOL_VERSIONID, \
44 ULTRA_CONTROLVM_CHANNEL_PROTOCOL_SIGNATURE)
46 #define MAX_SERIAL_NUM 32
48 /* Defines for various channel queues */
49 #define CONTROLVM_QUEUE_REQUEST 0
50 #define CONTROLVM_QUEUE_RESPONSE 1
51 #define CONTROLVM_QUEUE_EVENT 2
52 #define CONTROLVM_QUEUE_ACK 3
54 /* Max num of messages stored during IOVM creation to be reused after crash */
55 #define CONTROLVM_CRASHMSG_MAX 2
57 struct spar_segment_state {
58 u16 enabled:1; /* Bit 0: May enter other states */
59 u16 active:1; /* Bit 1: Assigned to active partition */
60 u16 alive:1; /* Bit 2: Configure message sent to
62 u16 revoked:1; /* Bit 3: similar to partition state
64 u16 allocated:1; /* Bit 4: memory (device/port number)
65 * has been selected by Command */
66 u16 known:1; /* Bit 5: has been introduced to the
67 * service/guest partition */
68 u16 ready:1; /* Bit 6: service/Guest partition has
69 * responded to introduction */
70 u16 operating:1; /* Bit 7: resource is configured and
72 /* Note: don't use high bit unless we need to switch to ushort
73 * which is non-compliant */
76 static const struct spar_segment_state segment_state_running = {
77 1, 1, 1, 0, 1, 1, 1, 1
80 static const struct spar_segment_state segment_state_paused = {
81 1, 1, 1, 0, 1, 1, 1, 0
84 static const struct spar_segment_state segment_state_standby = {
85 1, 1, 0, 0, 1, 1, 1, 0
88 /* Ids for commands that may appear in either queue of a ControlVm channel.
90 * Commands that are initiated by the command partition (CP), by an IO or
91 * console service partition (SP), or by a guest partition (GP)are:
92 * - issued on the RequestQueue queue (q #0) in the ControlVm channel
93 * - responded to on the ResponseQueue queue (q #1) in the ControlVm channel
95 * Events that are initiated by an IO or console service partition (SP) or
96 * by a guest partition (GP) are:
97 * - issued on the EventQueue queue (q #2) in the ControlVm channel
98 * - responded to on the EventAckQueue queue (q #3) in the ControlVm channel
101 CONTROLVM_INVALID = 0,
102 /* SWITCH commands required Parameter: SwitchNumber */
103 /* BUS commands required Parameter: BusNumber */
104 CONTROLVM_BUS_CREATE = 0x101, /* CP --> SP, GP */
105 CONTROLVM_BUS_DESTROY = 0x102, /* CP --> SP, GP */
106 CONTROLVM_BUS_CONFIGURE = 0x104, /* CP --> SP */
107 CONTROLVM_BUS_CHANGESTATE = 0x105, /* CP --> SP, GP */
108 CONTROLVM_BUS_CHANGESTATE_EVENT = 0x106, /* SP, GP --> CP */
109 /* DEVICE commands required Parameter: BusNumber, DeviceNumber */
111 CONTROLVM_DEVICE_CREATE = 0x201, /* CP --> SP, GP */
112 CONTROLVM_DEVICE_DESTROY = 0x202, /* CP --> SP, GP */
113 CONTROLVM_DEVICE_CONFIGURE = 0x203, /* CP --> SP */
114 CONTROLVM_DEVICE_CHANGESTATE = 0x204, /* CP --> SP, GP */
115 CONTROLVM_DEVICE_CHANGESTATE_EVENT = 0x205, /* SP, GP --> CP */
116 CONTROLVM_DEVICE_RECONFIGURE = 0x206, /* CP --> Boot */
117 /* CHIPSET commands */
118 CONTROLVM_CHIPSET_INIT = 0x301, /* CP --> SP, GP */
119 CONTROLVM_CHIPSET_STOP = 0x302, /* CP --> SP, GP */
120 CONTROLVM_CHIPSET_READY = 0x304, /* CP --> SP */
121 CONTROLVM_CHIPSET_SELFTEST = 0x305, /* CP --> SP */
128 /* specifies interrupt handle. It is used to retrieve the
129 * corresponding interrupt pin from Monitor; and the
130 * interrupt pin is used to connect to the corresponding
131 * interrupt. Used by IOPart-GP only.
135 /* specifies interrupt vector. It, interrupt pin, and shared are
136 * used to connect to the corresponding interrupt. Used by
141 /* specifies if the recvInterrupt is shared. It, interrupt pin
142 * and vector are used to connect to 0 = not shared; 1 = shared.
143 * the corresponding interrupt. Used by IOPart-GP only.
146 u8 reserved[3]; /* Natural alignment purposes */
154 u8 reserved[3]; /* Natural alignment purposes */
157 struct efi_spar_indication {
158 u64 boot_to_fw_ui:1; /* Bit 0: Stop in uefi ui */
159 u64 clear_nvram:1; /* Bit 1: Clear NVRAM */
160 u64 clear_cmos:1; /* Bit 2: Clear CMOS */
161 u64 boot_to_tool:1; /* Bit 3: Run install tool */
162 /* remaining bits are available */
165 enum ultra_chipset_feature {
166 ULTRA_CHIPSET_FEATURE_REPLY = 0x00000001,
167 ULTRA_CHIPSET_FEATURE_PARA_HOTPLUG = 0x00000002,
170 /* This is the common structure that is at the beginning of every
171 * ControlVm message (both commands and responses) in any ControlVm
172 * queue. Commands are easily distinguished from responses by
173 * looking at the flags.response field.
175 struct controlvm_message_header {
176 u32 id; /* See CONTROLVM_ID. */
177 /* For requests, indicates the message type. */
178 /* For responses, indicates the type of message we are responding to. */
180 u32 message_size; /* Includes size of this struct + size
182 u32 segment_index; /* Index of segment containing Vm
183 * message/information */
184 u32 completion_status; /* Error status code or result of
185 * message completion */
187 u32 failed:1; /* =1 in a response to * signify
189 u32 response_expected:1; /* =1 in all messages that expect a
190 * response (Control ignores this
192 u32 server:1; /* =1 in all bus & device-related
193 * messages where the message
194 * receiver is to act as the bus or
196 u32 test_message:1; /* =1 for testing use only
197 * (Control and Command ignore this
199 u32 partial_completion:1; /* =1 if there are forthcoming
200 * responses/acks associated
201 * with this message */
202 u32 preserve:1; /* =1 this is to let us know to
203 * preserve channel contents
204 * (for running guests)*/
205 u32 writer_in_diag:1; /* =1 the DiagWriter is active in the
206 * Diagnostic Partition*/
208 u32 reserved; /* Natural alignment */
209 u64 message_handle; /* Identifies the particular message instance,
210 * and is used to match particular */
211 /* request instances with the corresponding response instance. */
212 u64 payload_vm_offset; /* Offset of payload area from start of this
213 * instance of ControlVm segment */
214 u32 payload_max_bytes; /* Maximum bytes allocated in payload
215 * area of ControlVm segment */
216 u32 payload_bytes; /* Actual number of bytes of payload
217 * area to copy between IO/Command; */
218 /* if non-zero, there is a payload to copy. */
221 struct controlvm_packet_device_create {
222 u32 bus_no; /* bus # (0..n-1) from the msg receiver's end */
223 u32 dev_no; /* bus-relative (0..n-1) device number */
224 u64 channel_addr; /* Guest physical address of the channel, which
225 * can be dereferenced by the receiver of this
226 * ControlVm command */
227 u64 channel_bytes; /* specifies size of the channel in bytes */
228 uuid_le data_type_uuid; /* specifies format of data in channel */
229 uuid_le dev_inst_uuid; /* instance guid for the device */
230 struct irq_info intr; /* specifies interrupt information */
231 }; /* for CONTROLVM_DEVICE_CREATE */
233 struct controlvm_packet_device_configure {
234 u32 bus_no; /* bus # (0..n-1) from the msg
235 * receiver's perspective */
236 /* Control uses header SegmentIndex field to access bus number... */
237 u32 dev_no; /* bus-relative (0..n-1) device number */
238 } ; /* for CONTROLVM_DEVICE_CONFIGURE */
240 struct controlvm_message_device_create {
241 struct controlvm_message_header header;
242 struct controlvm_packet_device_create packet;
243 }; /* total 128 bytes */
245 struct controlvm_message_device_configure {
246 struct controlvm_message_header header;
247 struct controlvm_packet_device_configure packet;
248 }; /* total 56 bytes */
250 /* This is the format for a message in any ControlVm queue. */
251 struct controlvm_message_packet {
254 u32 bus_no; /* bus # (0..n-1) from the msg
255 * receiver's perspective */
256 u32 dev_count; /* indicates the max number of
257 * devices on this bus */
258 u64 channel_addr; /* Guest physical address of
259 * the channel, which can be
260 * dereferenced by the receiver
261 * of this ControlVm command */
262 u64 channel_bytes; /* size of the channel */
263 uuid_le bus_data_type_uuid; /* indicates format of
264 * data in bus channel*/
265 uuid_le bus_inst_uuid; /* instance uuid for the bus */
266 } create_bus; /* for CONTROLVM_BUS_CREATE */
268 u32 bus_no; /* bus # (0..n-1) from the msg
269 * receiver's perspective */
270 u32 reserved; /* Natural alignment purposes */
271 } destroy_bus; /* for CONTROLVM_BUS_DESTROY */
273 u32 bus_no; /* bus # (0..n-1) from the receiver's
275 u32 reserved1; /* for alignment purposes */
276 u64 guest_handle; /* This is used to convert
277 * guest physical address to
278 * physical address */
279 u64 recv_bus_irq_handle;
280 /* specifies interrupt info. It is used by SP
281 * to register to receive interrupts from the
282 * CP. This interrupt is used for bus level
283 * notifications. The corresponding
284 * sendBusInterruptHandle is kept in CP. */
285 } configure_bus; /* for CONTROLVM_BUS_CONFIGURE */
286 /* for CONTROLVM_DEVICE_CREATE */
287 struct controlvm_packet_device_create create_device;
289 u32 bus_no; /* bus # (0..n-1) from the msg
290 * receiver's perspective */
291 u32 dev_no; /* bus-relative (0..n-1) device # */
292 } destroy_device; /* for CONTROLVM_DEVICE_DESTROY */
293 /* for CONTROLVM_DEVICE_CONFIGURE */
294 struct controlvm_packet_device_configure configure_device;
296 u32 bus_no; /* bus # (0..n-1) from the msg
297 * receiver's perspective */
298 u32 dev_no; /* bus-relative (0..n-1) device # */
299 } reconfigure_device; /* for CONTROLVM_DEVICE_RECONFIGURE */
302 struct spar_segment_state state;
303 u8 reserved[2]; /* Natural alignment purposes */
304 } bus_change_state; /* for CONTROLVM_BUS_CHANGESTATE */
308 struct spar_segment_state state;
310 u32 phys_device:1; /* =1 if message is for
311 * a physical device */
313 u8 reserved[2]; /* Natural alignment purposes */
314 } device_change_state; /* for CONTROLVM_DEVICE_CHANGESTATE */
318 struct spar_segment_state state;
319 u8 reserved[6]; /* Natural alignment purposes */
320 } device_change_state_event;
321 /* for CONTROLVM_DEVICE_CHANGESTATE_EVENT */
323 u32 bus_count; /* indicates the max number of busses */
324 u32 switch_count; /* indicates the max number of
325 * switches if a service partition */
326 enum ultra_chipset_feature features;
327 u32 platform_number; /* Platform Number */
328 } init_chipset; /* for CONTROLVM_CHIPSET_INIT */
330 u32 options; /* reserved */
331 u32 test; /* bit 0 set to run embedded selftest */
332 } chipset_selftest; /* for CONTROLVM_CHIPSET_SELFTEST */
333 u64 addr; /* a physical address of something, that can be
334 * dereferenced by the receiver of this
335 * ControlVm command (depends on command id) */
336 u64 handle; /* a handle of something (depends on command
341 /* All messages in any ControlVm queue have this layout. */
342 struct controlvm_message {
343 struct controlvm_message_header hdr;
344 struct controlvm_message_packet cmd;
347 struct spar_controlvm_channel_protocol {
348 struct channel_header header;
349 u64 gp_controlvm; /* guest phys addr of this channel */
350 u64 gp_partition_tables;/* guest phys addr of partition tables */
351 u64 gp_diag_guest; /* guest phys addr of diagnostic channel */
352 u64 gp_boot_romdisk;/* guest phys addr of (read* only) Boot ROM disk */
353 u64 gp_boot_ramdisk;/* guest phys addr of writable Boot RAM disk */
354 u64 gp_acpi_table; /* guest phys addr of acpi table */
355 u64 gp_control_channel;/* guest phys addr of control channel */
356 u64 gp_diag_romdisk;/* guest phys addr of diagnostic ROM disk */
357 u64 gp_nvram; /* guest phys addr of NVRAM channel */
358 u64 request_payload_offset; /* Offset to request payload area */
359 u64 event_payload_offset; /* Offset to event payload area */
360 u32 request_payload_bytes; /* Bytes available in request payload
362 u32 event_payload_bytes;/* Bytes available in event payload area */
363 u32 control_channel_bytes;
364 u32 nvram_channel_bytes; /* Bytes in PartitionNvram segment */
365 u32 message_bytes; /* sizeof(CONTROLVM_MESSAGE) */
366 u32 message_count; /* CONTROLVM_MESSAGE_MAX */
367 u64 gp_smbios_table; /* guest phys addr of SMBIOS tables */
368 u64 gp_physical_smbios_table; /* guest phys addr of SMBIOS table */
369 /* ULTRA_MAX_GUESTS_PER_SERVICE */
370 char gp_reserved[2688];
372 /* guest physical address of EFI firmware image base */
373 u64 virtual_guest_firmware_image_base;
375 /* guest physical address of EFI firmware entry point */
376 u64 virtual_guest_firmware_entry_point;
378 /* guest EFI firmware image size */
379 u64 virtual_guest_firmware_image_size;
381 /* GPA = 1MB where EFI firmware image is copied to */
382 u64 virtual_guest_firmware_boot_base;
383 u64 virtual_guest_image_base;
384 u64 virtual_guest_image_size;
385 u64 prototype_control_channel_offset;
386 u64 virtual_guest_partition_handle;
388 u16 restore_action; /* Restore Action field to restore the guest
390 u16 dump_action; /* For Windows guests it shows if the visordisk
391 * is running in dump mode */
392 u16 nvram_fail_count;
393 u16 saved_crash_message_count; /* = CONTROLVM_CRASHMSG_MAX */
394 u32 saved_crash_message_offset; /* Offset to request payload area needed
396 u32 installation_error; /* Type of error encountered during
398 u32 installation_text_id; /* Id of string to display */
399 u16 installation_remaining_steps;/* Number of remaining installation
400 * steps (for progress bars) */
401 u8 tool_action; /* ULTRA_TOOL_ACTIONS Installation Action
403 u8 reserved; /* alignment */
404 struct efi_spar_indication efi_spar_ind;
405 struct efi_spar_indication efi_spar_ind_supported;
407 u8 reserved2[28]; /* Force signals to begin on 128-byte cache
409 struct signal_queue_header request_queue;/* Service or guest partition
410 * uses this queue to send
411 * requests to Control */
412 struct signal_queue_header response_queue;/* Control uses this queue to
413 * respond to service or guest
414 * partition requests */
415 struct signal_queue_header event_queue; /* Control uses this queue to
416 * send events to service or
418 struct signal_queue_header event_ack_queue;/* Service or guest partition
419 * uses this queue to ack
422 /* Request fixed-size message pool - does not include payload */
423 struct controlvm_message request_msg[CONTROLVM_MESSAGE_MAX];
425 /* Response fixed-size message pool - does not include payload */
426 struct controlvm_message response_msg[CONTROLVM_MESSAGE_MAX];
428 /* Event fixed-size message pool - does not include payload */
429 struct controlvm_message event_msg[CONTROLVM_MESSAGE_MAX];
431 /* Ack fixed-size message pool - does not include payload */
432 struct controlvm_message event_ack_msg[CONTROLVM_MESSAGE_MAX];
434 /* Message stored during IOVM creation to be reused after crash */
435 struct controlvm_message saved_crash_msg[CONTROLVM_CRASHMSG_MAX];
438 /* Offsets for VM channel attributes */
439 #define VM_CH_REQ_QUEUE_OFFSET \
440 offsetof(struct spar_controlvm_channel_protocol, request_queue)
441 #define VM_CH_RESP_QUEUE_OFFSET \
442 offsetof(struct spar_controlvm_channel_protocol, response_queue)
443 #define VM_CH_EVENT_QUEUE_OFFSET \
444 offsetof(struct spar_controlvm_channel_protocol, event_queue)
445 #define VM_CH_ACK_QUEUE_OFFSET \
446 offsetof(struct spar_controlvm_channel_protocol, event_ack_queue)
447 #define VM_CH_REQ_MSG_OFFSET \
448 offsetof(struct spar_controlvm_channel_protocol, request_msg)
449 #define VM_CH_RESP_MSG_OFFSET \
450 offsetof(struct spar_controlvm_channel_protocol, response_msg)
451 #define VM_CH_EVENT_MSG_OFFSET \
452 offsetof(struct spar_controlvm_channel_protocol, event_msg)
453 #define VM_CH_ACK_MSG_OFFSET \
454 offsetof(struct spar_controlvm_channel_protocol, event_ack_msg)
455 #define VM_CH_CRASH_MSG_OFFSET \
456 offsetof(struct spar_controlvm_channel_protocol, saved_crash_msg)
458 /* The following header will be located at the beginning of PayloadVmOffset for
459 * various ControlVm commands. The receiver of a ControlVm command with a
460 * PayloadVmOffset will dereference this address and then use connection_offset,
461 * initiator_offset, and target_offset to get the location of UTF-8 formatted
462 * strings that can be parsed to obtain command-specific information. The value
463 * of total_length should equal PayloadBytes. The format of the strings at
464 * PayloadVmOffset will take different forms depending on the message.
466 struct spar_controlvm_parameters_header {
469 u32 connection_offset;
470 u32 connection_length;
471 u32 initiator_offset;
472 u32 initiator_length;
481 u32 reserved; /* Natural alignment */
484 #endif /* __CONTROLVMCHANNEL_H__ */