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95 lines
3.0 KiB
95 lines
3.0 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* Copyright (C) 2010 - 2015 UNISYS CORPORATION |
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* All rights reserved. |
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*/ |
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#ifndef __VBUSCHANNEL_H__ |
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#define __VBUSCHANNEL_H__ |
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/* |
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* The vbus channel is the channel area provided via the BUS_CREATE controlvm |
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* message for each virtual bus. This channel area is provided to both server |
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* and client ends of the bus. The channel header area is initialized by |
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* the server, and the remaining information is filled in by the client. |
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* We currently use this for the client to provide various information about |
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* the client devices and client drivers for the server end to see. |
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*/ |
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#include <linux/uuid.h> |
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#include <linux/visorbus.h> |
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/* {193b331b-c58f-11da-95a9-00e08161165f} */ |
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#define VISOR_VBUS_CHANNEL_GUID \ |
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GUID_INIT(0x193b331b, 0xc58f, 0x11da, \ |
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0x95, 0xa9, 0x0, 0xe0, 0x81, 0x61, 0x16, 0x5f) |
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/* |
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* Must increment this whenever you insert or delete fields within this channel |
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* struct. Also increment whenever you change the meaning of fields within this |
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* channel struct so as to break pre-existing software. Note that you can |
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* usually add fields to the END of the channel struct withOUT needing to |
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* increment this. |
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*/ |
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#define VISOR_VBUS_CHANNEL_VERSIONID 1 |
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/* |
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* struct visor_vbus_deviceinfo |
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* @devtype: Short string identifying the device type. |
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* @drvname: Driver .sys file name. |
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* @infostrs: Kernel vversion. |
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* @reserved: Pad size to 256 bytes. |
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* |
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* An array of this struct is present in the channel area for each vbus. It is |
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* filled in by the client side to provide info about the device and driver from |
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* the client's perspective. |
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*/ |
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struct visor_vbus_deviceinfo { |
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u8 devtype[16]; |
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u8 drvname[16]; |
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u8 infostrs[96]; |
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u8 reserved[128]; |
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} __packed; |
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/* |
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* struct visor_vbus_headerinfo |
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* @struct_bytes: Size of this struct in bytes. |
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* @device_info_struct_bytes: Size of VISOR_VBUS_DEVICEINFO. |
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* @dev_info_count: Num of items in DevInfo member. This is the |
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* allocated size. |
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* @chp_info_offset: Byte offset from beginning of this struct to the |
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* ChpInfo struct. |
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* @bus_info_offset: Byte offset from beginning of this struct to the |
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* BusInfo struct. |
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* @dev_info_offset: Byte offset from beginning of this struct to the |
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* DevInfo array. |
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* @reserved: Natural alignment. |
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*/ |
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struct visor_vbus_headerinfo { |
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u32 struct_bytes; |
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u32 device_info_struct_bytes; |
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u32 dev_info_count; |
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u32 chp_info_offset; |
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u32 bus_info_offset; |
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u32 dev_info_offset; |
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u8 reserved[104]; |
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} __packed; |
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/* |
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* struct visor_vbus_channel |
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* @channel_header: Initialized by server. |
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* @hdr_info: Initialized by server. |
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* @chp_info: Describes client chipset device and driver. |
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* @bus_info: Describes client bus device and driver. |
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* @dev_info: Describes client device and driver for each device on the |
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* bus. |
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*/ |
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struct visor_vbus_channel { |
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struct channel_header channel_header; |
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struct visor_vbus_headerinfo hdr_info; |
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struct visor_vbus_deviceinfo chp_info; |
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struct visor_vbus_deviceinfo bus_info; |
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struct visor_vbus_deviceinfo dev_info[0]; |
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} __packed; |
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#endif
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