diff options
Diffstat (limited to 'kernel/drivers/staging/unisys/common-spar/include/channels/vbuschannel.h')
| -rw-r--r-- | kernel/drivers/staging/unisys/common-spar/include/channels/vbuschannel.h | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/kernel/drivers/staging/unisys/common-spar/include/channels/vbuschannel.h b/kernel/drivers/staging/unisys/common-spar/include/channels/vbuschannel.h new file mode 100644 index 000000000..2c42ce16e --- /dev/null +++ b/kernel/drivers/staging/unisys/common-spar/include/channels/vbuschannel.h @@ -0,0 +1,94 @@ +/* Copyright (C) 2010 - 2013 UNISYS CORPORATION + * All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or (at + * your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or + * NON INFRINGEMENT. See the GNU General Public License for more + * details. + */ + +#ifndef __VBUSCHANNEL_H__ +#define __VBUSCHANNEL_H__ + +/* The vbus channel is the channel area provided via the BUS_CREATE controlvm + * message for each virtual bus. This channel area is provided to both server + * and client ends of the bus. The channel header area is initialized by + * the server, and the remaining information is filled in by the client. + * We currently use this for the client to provide various information about + * the client devices and client drivers for the server end to see. + */ +#include <linux/uuid.h> +#include "vbusdeviceinfo.h" +#include "channel.h" + +/* {193b331b-c58f-11da-95a9-00e08161165f} */ +#define SPAR_VBUS_CHANNEL_PROTOCOL_UUID \ + UUID_LE(0x193b331b, 0xc58f, 0x11da, \ + 0x95, 0xa9, 0x0, 0xe0, 0x81, 0x61, 0x16, 0x5f) +static const uuid_le spar_vbus_channel_protocol_uuid = + SPAR_VBUS_CHANNEL_PROTOCOL_UUID; + +#define SPAR_VBUS_CHANNEL_PROTOCOL_SIGNATURE ULTRA_CHANNEL_PROTOCOL_SIGNATURE + +/* 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 SPAR_VBUS_CHANNEL_PROTOCOL_VERSIONID 1 + +#define SPAR_VBUS_CHANNEL_OK_CLIENT(ch) \ + spar_check_channel_client(ch, \ + spar_vbus_channel_protocol_uuid, \ + "vbus", \ + sizeof(struct spar_vbus_channel_protocol),\ + SPAR_VBUS_CHANNEL_PROTOCOL_VERSIONID, \ + SPAR_VBUS_CHANNEL_PROTOCOL_SIGNATURE) + +#define SPAR_VBUS_CHANNEL_OK_SERVER(actual_bytes) \ + (spar_check_channel_server(spar_vbus_channel_protocol_uuid, \ + "vbus", \ + sizeof(struct ultra_vbus_channel_protocol),\ + actual_bytes)) + +#pragma pack(push, 1) /* both GCC and VC now allow this pragma */ +struct spar_vbus_headerinfo { + u32 struct_bytes; /* size of this struct in bytes */ + u32 device_info_struct_bytes; /* sizeof(ULTRA_VBUS_DEVICEINFO) */ + u32 dev_info_count; /* num of items in DevInfo member */ + /* (this is the allocated size) */ + u32 chp_info_offset; /* byte offset from beginning of this struct */ + /* to the ChpInfo struct (below) */ + u32 bus_info_offset; /* byte offset from beginning of this struct */ + /* to the BusInfo struct (below) */ + u32 dev_info_offset; /* byte offset from beginning of this struct */ + /* to the DevInfo array (below) */ + u8 reserved[104]; +}; + +struct spar_vbus_channel_protocol { + struct channel_header channel_header; /* initialized by server */ + struct spar_vbus_headerinfo hdr_info; /* initialized by server */ + /* the remainder of this channel is filled in by the client */ + struct ultra_vbus_deviceinfo chp_info; + /* describes client chipset device and driver */ + struct ultra_vbus_deviceinfo bus_info; + /* describes client bus device and driver */ + struct ultra_vbus_deviceinfo dev_info[0]; + /* describes client device and driver for each device on the bus */ +}; + +#define VBUS_CH_SIZE_EXACT(MAXDEVICES) \ + (sizeof(ULTRA_VBUS_CHANNEL_PROTOCOL) + ((MAXDEVICES) * \ + sizeof(ULTRA_VBUS_DEVICEINFO))) +#define VBUS_CH_SIZE(MAXDEVICES) COVER(VBUS_CH_SIZE_EXACT(MAXDEVICES), 4096) + +#pragma pack(pop) + +#endif |