[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / staging / hv / channel.h

/*
 *
 * Copyright (c) 2009, Microsoft Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
 * Place - Suite 330, Boston, MA 02111-1307 USA.
 *
 * Authors:
 *   Haiyang Zhang <haiyangz@microsoft.com>
 *   Hank Janssen  <hjanssen@microsoft.com>
 *
 */


#ifndef _CHANNEL_H_
#define _CHANNEL_H_

#include "channel_mgmt.h"

/* The format must be the same as struct vmdata_gpa_direct */
struct VMBUS_CHANNEL_PACKET_PAGE_BUFFER {
	u16 Type;
	u16 DataOffset8;
	u16 Length8;
	u16 Flags;
	u64 TransactionId;
	u32 Reserved;
	u32 RangeCount;
	struct hv_page_buffer Range[MAX_PAGE_BUFFER_COUNT];
} __attribute__((packed));

/* The format must be the same as struct vmdata_gpa_direct */
struct VMBUS_CHANNEL_PACKET_MULITPAGE_BUFFER {
	u16 Type;
	u16 DataOffset8;
	u16 Length8;
	u16 Flags;
	u64 TransactionId;
	u32 Reserved;
	u32 RangeCount;		/* Always 1 in this case */
	struct hv_multipage_buffer Range;
} __attribute__((packed));


extern int VmbusChannelOpen(struct vmbus_channel *channel,
			    u32 SendRingBufferSize,
			    u32 RecvRingBufferSize,
			    void *UserData,
			    u32 UserDataLen,
			    void(*OnChannelCallback)(void *context),
			    void *Context);

extern void VmbusChannelClose(struct vmbus_channel *channel);

extern int VmbusChannelSendPacket(struct vmbus_channel *channel,
				  const void *Buffer,
				  u32 BufferLen,
				  u64 RequestId,
				  enum vmbus_packet_type Type,
				  u32 Flags);

extern int VmbusChannelSendPacketPageBuffer(struct vmbus_channel *channel,
					    struct hv_page_buffer PageBuffers[],
					    u32 PageCount,
					    void *Buffer,
					    u32 BufferLen,
					    u64 RequestId);

extern int VmbusChannelSendPacketMultiPageBuffer(struct vmbus_channel *channel,
					struct hv_multipage_buffer *mpb,
					void *Buffer,
					u32 BufferLen,
					u64 RequestId);

extern int VmbusChannelEstablishGpadl(struct vmbus_channel *channel,
				      void *Kbuffer,
				      u32 Size,
				      u32 *GpadlHandle);

extern int VmbusChannelTeardownGpadl(struct vmbus_channel *channel,
				     u32 GpadlHandle);

extern int VmbusChannelRecvPacket(struct vmbus_channel *channel,
				  void *Buffer,
				  u32 BufferLen,
				  u32 *BufferActualLen,
				  u64 *RequestId);

extern int VmbusChannelRecvPacketRaw(struct vmbus_channel *channel,
				     void *Buffer,
				     u32 BufferLen,
				     u32 *BufferActualLen,
				     u64 *RequestId);

extern void VmbusChannelOnChannelEvent(struct vmbus_channel *channel);

extern void VmbusChannelGetDebugInfo(struct vmbus_channel *channel,
				     struct vmbus_channel_debug_info *debug);

extern void VmbusChannelOnTimer(unsigned long data);

#endif /* _CHANNEL_H_ */
Commit	Line	Data
3e7ee490 HJ	1	/*
	2	*
	3	* Copyright (c) 2009, Microsoft Corporation.
	4	*
	5	* This program is free software; you can redistribute it and/or modify it
	6	* under the terms and conditions of the GNU General Public License,
	7	* version 2, as published by the Free Software Foundation.
	8	*
	9	* This program is distributed in the hope it will be useful, but WITHOUT
	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	12	* more details.
	13	*
	14	* You should have received a copy of the GNU General Public License along with
	15	* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
	16	* Place - Suite 330, Boston, MA 02111-1307 USA.
	17	*
	18	* Authors:
	19	* Haiyang Zhang <haiyangz@microsoft.com>
	20	* Hank Janssen <hjanssen@microsoft.com>
	21	*
	22	*/
	23
	24
	25	#ifndef _CHANNEL_H_
	26	#define _CHANNEL_H_
	27
ff39524b	28	#include "channel_mgmt.h"
3e7ee490	29
8dc0a06a	30	/* The format must be the same as struct vmdata_gpa_direct */
0cf4fa80	31	struct VMBUS_CHANNEL_PACKET_PAGE_BUFFER {
46a05253 GKH	32	u16 Type;
	33	u16 DataOffset8;
	34	u16 Length8;
	35	u16 Flags;
	36	u64 TransactionId;
	37	u32 Reserved;
	38	u32 RangeCount;
ee3d7ddf	39	struct hv_page_buffer Range[MAX_PAGE_BUFFER_COUNT];
46a05253	40	} __attribute__((packed));
3e7ee490	41
8dc0a06a	42	/* The format must be the same as struct vmdata_gpa_direct */
3fcc523a	43	struct VMBUS_CHANNEL_PACKET_MULITPAGE_BUFFER {
46a05253 GKH	44	u16 Type;
	45	u16 DataOffset8;
	46	u16 Length8;
	47	u16 Flags;
	48	u64 TransactionId;
	49	u32 Reserved;
	50	u32 RangeCount; /* Always 1 in this case */
ee3d7ddf	51	struct hv_multipage_buffer Range;
46a05253 GKH	52	} __attribute__((packed));
	53
	54
aded7165	55	extern int VmbusChannelOpen(struct vmbus_channel *channel,
46a05253 GKH	56	u32 SendRingBufferSize,
	57	u32 RecvRingBufferSize,
	58	void *UserData,
	59	u32 UserDataLen,
79035069	60	void(OnChannelCallback)(void context),
46a05253 GKH	61	void *Context);
46a05253 GKH	62
aded7165	63	extern void VmbusChannelClose(struct vmbus_channel *channel);
46a05253	64
aded7165	65	extern int VmbusChannelSendPacket(struct vmbus_channel *channel,
46a05253 GKH	66	const void *Buffer,
	67	u32 BufferLen,
	68	u64 RequestId,
8dc0a06a	69	enum vmbus_packet_type Type,
46a05253 GKH	70	u32 Flags);
46a05253 GKH	71
aded7165	72	extern int VmbusChannelSendPacketPageBuffer(struct vmbus_channel *channel,
ee3d7ddf	73	struct hv_page_buffer PageBuffers[],
46a05253 GKH	74	u32 PageCount,
	75	void *Buffer,
	76	u32 BufferLen,
	77	u64 RequestId);
	78
aded7165	79	extern int VmbusChannelSendPacketMultiPageBuffer(struct vmbus_channel *channel,
ee3d7ddf	80	struct hv_multipage_buffer *mpb,
46a05253 GKH	81	void *Buffer,
	82	u32 BufferLen,
	83	u64 RequestId);
	84
aded7165	85	extern int VmbusChannelEstablishGpadl(struct vmbus_channel *channel,
46a05253 GKH	86	void *Kbuffer,
	87	u32 Size,
	88	u32 *GpadlHandle);
	89
aded7165	90	extern int VmbusChannelTeardownGpadl(struct vmbus_channel *channel,
46a05253 GKH	91	u32 GpadlHandle);
46a05253 GKH	92
aded7165	93	extern int VmbusChannelRecvPacket(struct vmbus_channel *channel,
46a05253 GKH	94	void *Buffer,
	95	u32 BufferLen,
	96	u32 *BufferActualLen,
	97	u64 *RequestId);
	98
aded7165	99	extern int VmbusChannelRecvPacketRaw(struct vmbus_channel *channel,
46a05253 GKH	100	void *Buffer,
	101	u32 BufferLen,
	102	u32 *BufferActualLen,
	103	u64 *RequestId);
	104
aded7165	105	extern void VmbusChannelOnChannelEvent(struct vmbus_channel *channel);
46a05253	106
aded7165 GKH	107	extern void VmbusChannelGetDebugInfo(struct vmbus_channel *channel,
aded7165 GKH	108	struct vmbus_channel_debug_info *debug);
46a05253 GKH	109
	110	extern void VmbusChannelOnTimer(unsigned long data);
	111
454f18a9	112	#endif /* _CHANNEL_H_ */