168 lines
5.4 KiB
C
168 lines
5.4 KiB
C
/*-
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* Copyright (c) 2016 Microsoft Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _VMBUS_H_
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#define _VMBUS_H_
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#include <sys/param.h>
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#include <sys/bus.h>
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/*
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* VMBUS version is 32 bit, upper 16 bit for major_number and lower
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* 16 bit for minor_number.
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*
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* 0.13 -- Windows Server 2008
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* 1.1 -- Windows 7
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* 2.4 -- Windows 8
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* 3.0 -- Windows 8.1
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*/
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#define VMBUS_VERSION_WS2008 ((0 << 16) | (13))
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#define VMBUS_VERSION_WIN7 ((1 << 16) | (1))
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#define VMBUS_VERSION_WIN8 ((2 << 16) | (4))
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#define VMBUS_VERSION_WIN8_1 ((3 << 16) | (0))
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#define VMBUS_VERSION_MAJOR(ver) (((uint32_t)(ver)) >> 16)
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#define VMBUS_VERSION_MINOR(ver) (((uint32_t)(ver)) & 0xffff)
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/*
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* GPA stuffs.
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*/
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struct vmbus_gpa_range {
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uint32_t gpa_len;
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uint32_t gpa_ofs;
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uint64_t gpa_page[0];
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} __packed;
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/* This is actually vmbus_gpa_range.gpa_page[1] */
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struct vmbus_gpa {
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uint32_t gpa_len;
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uint32_t gpa_ofs;
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uint64_t gpa_page;
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} __packed;
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#define VMBUS_CHANPKT_SIZE_SHIFT 3
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#define VMBUS_CHANPKT_GETLEN(pktlen) \
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(((int)(pktlen)) << VMBUS_CHANPKT_SIZE_SHIFT)
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struct vmbus_chanpkt_hdr {
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uint16_t cph_type; /* VMBUS_CHANPKT_TYPE_ */
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uint16_t cph_hlen; /* header len, in 8 bytes */
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uint16_t cph_tlen; /* total len, in 8 bytes */
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uint16_t cph_flags; /* VMBUS_CHANPKT_FLAG_ */
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uint64_t cph_xactid;
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} __packed;
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#define VMBUS_CHANPKT_TYPE_INBAND 0x0006
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#define VMBUS_CHANPKT_TYPE_RXBUF 0x0007
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#define VMBUS_CHANPKT_TYPE_GPA 0x0009
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#define VMBUS_CHANPKT_TYPE_COMP 0x000b
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#define VMBUS_CHANPKT_FLAG_NONE 0
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#define VMBUS_CHANPKT_FLAG_RC 0x0001 /* report completion */
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#define VMBUS_CHANPKT_CONST_DATA(pkt) \
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(const void *)((const uint8_t *)(pkt) + \
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VMBUS_CHANPKT_GETLEN((pkt)->cph_hlen))
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/* Include padding */
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#define VMBUS_CHANPKT_DATALEN(pkt) \
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(VMBUS_CHANPKT_GETLEN((pkt)->cph_tlen) -\
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VMBUS_CHANPKT_GETLEN((pkt)->cph_hlen))
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struct vmbus_rxbuf_desc {
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uint32_t rb_len;
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uint32_t rb_ofs;
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} __packed;
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struct vmbus_chanpkt_rxbuf {
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struct vmbus_chanpkt_hdr cp_hdr;
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uint16_t cp_rxbuf_id;
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uint16_t cp_rsvd;
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uint32_t cp_rxbuf_cnt;
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struct vmbus_rxbuf_desc cp_rxbuf[];
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} __packed;
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struct vmbus_channel;
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struct hyperv_guid;
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typedef void (*vmbus_chan_callback_t)(struct vmbus_channel *, void *);
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static __inline struct vmbus_channel *
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vmbus_get_channel(device_t dev)
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{
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return device_get_ivars(dev);
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}
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int vmbus_chan_open(struct vmbus_channel *chan,
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int txbr_size, int rxbr_size, const void *udata, int udlen,
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vmbus_chan_callback_t cb, void *cbarg);
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void vmbus_chan_close(struct vmbus_channel *chan);
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int vmbus_chan_gpadl_connect(struct vmbus_channel *chan,
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bus_addr_t paddr, int size, uint32_t *gpadl);
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int vmbus_chan_gpadl_disconnect(struct vmbus_channel *chan,
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uint32_t gpadl);
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void vmbus_chan_cpu_set(struct vmbus_channel *chan, int cpu);
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void vmbus_chan_cpu_rr(struct vmbus_channel *chan);
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struct vmbus_channel *
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vmbus_chan_cpu2chan(struct vmbus_channel *chan, int cpu);
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void vmbus_chan_set_readbatch(struct vmbus_channel *chan, bool on);
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struct vmbus_channel **
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vmbus_subchan_get(struct vmbus_channel *pri_chan,
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int subchan_cnt);
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void vmbus_subchan_rel(struct vmbus_channel **subchan,
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int subchan_cnt);
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void vmbus_subchan_drain(struct vmbus_channel *pri_chan);
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int vmbus_chan_recv(struct vmbus_channel *chan, void *data, int *dlen,
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uint64_t *xactid);
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int vmbus_chan_recv_pkt(struct vmbus_channel *chan,
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struct vmbus_chanpkt_hdr *pkt, int *pktlen);
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int vmbus_chan_send(struct vmbus_channel *chan, uint16_t type,
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uint16_t flags, void *data, int dlen, uint64_t xactid);
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int vmbus_chan_send_sglist(struct vmbus_channel *chan,
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struct vmbus_gpa sg[], int sglen, void *data, int dlen,
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uint64_t xactid);
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int vmbus_chan_send_prplist(struct vmbus_channel *chan,
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struct vmbus_gpa_range *prp, int prp_cnt, void *data,
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int dlen, uint64_t xactid);
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uint32_t vmbus_chan_id(const struct vmbus_channel *chan);
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uint32_t vmbus_chan_subidx(const struct vmbus_channel *chan);
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bool vmbus_chan_is_primary(const struct vmbus_channel *chan);
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const struct hyperv_guid *
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vmbus_chan_guid_inst(const struct vmbus_channel *chan);
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int vmbus_chan_prplist_nelem(int br_size, int prpcnt_max,
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int dlen_max);
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#endif /* !_VMBUS_H_ */
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