95 lines
3.8 KiB
C
95 lines
3.8 KiB
C
/* Copyright (C) 2010 - 2013 UNISYS CORPORATION
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
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* NON INFRINGEMENT. See the GNU General Public License for more
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* details.
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*/
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#ifndef __VBUSCHANNEL_H__
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#define __VBUSCHANNEL_H__
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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 "vbusdeviceinfo.h"
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#include "channel.h"
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/* {193b331b-c58f-11da-95a9-00e08161165f} */
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#define SPAR_VBUS_CHANNEL_PROTOCOL_UUID \
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UUID_LE(0x193b331b, 0xc58f, 0x11da, \
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0x95, 0xa9, 0x0, 0xe0, 0x81, 0x61, 0x16, 0x5f)
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static const uuid_le spar_vbus_channel_protocol_uuid =
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SPAR_VBUS_CHANNEL_PROTOCOL_UUID;
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#define SPAR_VBUS_CHANNEL_PROTOCOL_SIGNATURE ULTRA_CHANNEL_PROTOCOL_SIGNATURE
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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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#define SPAR_VBUS_CHANNEL_PROTOCOL_VERSIONID 1
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#define SPAR_VBUS_CHANNEL_OK_CLIENT(ch) \
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spar_check_channel_client(ch, \
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spar_vbus_channel_protocol_uuid, \
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"vbus", \
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sizeof(struct spar_vbus_channel_protocol),\
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SPAR_VBUS_CHANNEL_PROTOCOL_VERSIONID, \
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SPAR_VBUS_CHANNEL_PROTOCOL_SIGNATURE)
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#define SPAR_VBUS_CHANNEL_OK_SERVER(actual_bytes) \
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(spar_check_channel_server(spar_vbus_channel_protocol_uuid, \
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"vbus", \
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sizeof(struct spar_vbus_channel_protocol),\
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actual_bytes))
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#pragma pack(push, 1) /* both GCC and VC now allow this pragma */
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struct spar_vbus_headerinfo {
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u32 struct_bytes; /* size of this struct in bytes */
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u32 device_info_struct_bytes; /* sizeof(ULTRA_VBUS_DEVICEINFO) */
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u32 dev_info_count; /* num of items in DevInfo member */
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/* (this is the allocated size) */
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u32 chp_info_offset; /* byte offset from beginning of this struct */
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/* to the ChpInfo struct (below) */
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u32 bus_info_offset; /* byte offset from beginning of this struct */
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/* to the BusInfo struct (below) */
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u32 dev_info_offset; /* byte offset from beginning of this struct */
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/* to the DevInfo array (below) */
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u8 reserved[104];
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};
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struct spar_vbus_channel_protocol {
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struct channel_header channel_header; /* initialized by server */
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struct spar_vbus_headerinfo hdr_info; /* initialized by server */
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/* the remainder of this channel is filled in by the client */
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struct ultra_vbus_deviceinfo chp_info;
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/* describes client chipset device and driver */
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struct ultra_vbus_deviceinfo bus_info;
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/* describes client bus device and driver */
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struct ultra_vbus_deviceinfo dev_info[0];
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/* describes client device and driver for each device on the bus */
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};
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#define VBUS_CH_SIZE_EXACT(MAXDEVICES) \
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(sizeof(ULTRA_VBUS_CHANNEL_PROTOCOL) + ((MAXDEVICES) * \
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sizeof(ULTRA_VBUS_DEVICEINFO)))
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#define VBUS_CH_SIZE(MAXDEVICES) COVER(VBUS_CH_SIZE_EXACT(MAXDEVICES), 4096)
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#pragma pack(pop)
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#endif
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