/*- * Copyright (c) 2016 Microsoft Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice unmodified, this list of conditions, and the following * disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef _VMBUS_H_ #define _VMBUS_H_ #include #include #include /* * VMBUS version is 32 bit, upper 16 bit for major_number and lower * 16 bit for minor_number. * * 0.13 -- Windows Server 2008 * 1.1 -- Windows 7 * 2.4 -- Windows 8 * 3.0 -- Windows 8.1 * 4.0 -- Windows 10 * 5.0 -- Newer Windows 10 */ #define VMBUS_VERSION_WS2008 ((0 << 16) | (13)) #define VMBUS_VERSION_WIN7 ((1 << 16) | (1)) #define VMBUS_VERSION_WIN8 ((2 << 16) | (4)) #define VMBUS_VERSION_WIN8_1 ((3 << 16) | (0)) #define VMBUS_VERSION_WIN10 ((4 << 16) | (0)) #define VMBUS_VERSION_WIN10_V5 ((5 << 16) | (0)) #define VMBUS_VERSION_MAJOR(ver) (((uint32_t)(ver)) >> 16) #define VMBUS_VERSION_MINOR(ver) (((uint32_t)(ver)) & 0xffff) #define VMBUS_CHAN_POLLHZ_MIN 100 /* 10ms interval */ #define VMBUS_CHAN_POLLHZ_MAX 1000000 /* 1us interval */ /* * GPA stuffs. */ struct vmbus_gpa_range { uint32_t gpa_len; uint32_t gpa_ofs; uint64_t gpa_page[0]; } __packed; /* This is actually vmbus_gpa_range.gpa_page[1] */ struct vmbus_gpa { uint32_t gpa_len; uint32_t gpa_ofs; uint64_t gpa_page; } __packed; #define VMBUS_CHANPKT_SIZE_SHIFT 3 #define VMBUS_CHANPKT_GETLEN(pktlen) \ (((int)(pktlen)) << VMBUS_CHANPKT_SIZE_SHIFT) struct vmbus_chanpkt_hdr { uint16_t cph_type; /* VMBUS_CHANPKT_TYPE_ */ uint16_t cph_hlen; /* header len, in 8 bytes */ uint16_t cph_tlen; /* total len, in 8 bytes */ uint16_t cph_flags; /* VMBUS_CHANPKT_FLAG_ */ uint64_t cph_xactid; } __packed; #define VMBUS_CHANPKT_TYPE_INBAND 0x0006 #define VMBUS_CHANPKT_TYPE_RXBUF 0x0007 #define VMBUS_CHANPKT_TYPE_GPA 0x0009 #define VMBUS_CHANPKT_TYPE_COMP 0x000b #define VMBUS_CHANPKT_FLAG_NONE 0 #define VMBUS_CHANPKT_FLAG_RC 0x0001 /* report completion */ #define VMBUS_CHANPKT_CONST_DATA(pkt) \ (const void *)((const uint8_t *)(pkt) + \ VMBUS_CHANPKT_GETLEN((pkt)->cph_hlen)) /* Include padding */ #define VMBUS_CHANPKT_DATALEN(pkt) \ (VMBUS_CHANPKT_GETLEN((pkt)->cph_tlen) -\ VMBUS_CHANPKT_GETLEN((pkt)->cph_hlen)) struct vmbus_rxbuf_desc { uint32_t rb_len; uint32_t rb_ofs; } __packed; struct vmbus_chanpkt_rxbuf { struct vmbus_chanpkt_hdr cp_hdr; uint16_t cp_rxbuf_id; uint16_t cp_rsvd; uint32_t cp_rxbuf_cnt; struct vmbus_rxbuf_desc cp_rxbuf[]; } __packed; struct vmbus_chan_br { void *cbr; bus_addr_t cbr_paddr; int cbr_txsz; int cbr_rxsz; }; struct vmbus_channel; struct vmbus_xact; struct vmbus_xact_ctx; struct hyperv_guid; struct task; struct taskqueue; typedef void (*vmbus_chan_callback_t)(struct vmbus_channel *, void *); typedef int (*vmbus_br_copy_callback_t)(void *, int, void *); static __inline struct vmbus_channel * vmbus_get_channel(device_t dev) { return device_get_ivars(dev); } /* * vmbus_chan_open_br() * * Return values: * 0 Succeeded. * EISCONN Failed, and the memory passed through 'br' is still * connected. Callers must _not_ free the memory * passed through 'br', if this error happens. * other values Failed. The memory passed through 'br' is no longer * connected. Callers are free to do anything with the * memory passed through 'br'. * * * * vmbus_chan_close_direct() * * NOTE: * Callers of this function _must_ make sure to close all sub-channels before * closing the primary channel. * * Return values: * 0 Succeeded. * EISCONN Failed, and the memory associated with the bufring * is still connected. Callers must _not_ free the the * memory associated with the bufring, if this error * happens. * other values Failed. The memory associated with the bufring is * no longer connected. Callers are free to do anything * with the memory associated with the bufring. */ int vmbus_chan_open(struct vmbus_channel *chan, int txbr_size, int rxbr_size, const void *udata, int udlen, vmbus_chan_callback_t cb, void *cbarg); int vmbus_chan_open_br(struct vmbus_channel *chan, const struct vmbus_chan_br *cbr, const void *udata, int udlen, vmbus_chan_callback_t cb, void *cbarg); void vmbus_chan_close(struct vmbus_channel *chan); int vmbus_chan_close_direct(struct vmbus_channel *chan); void vmbus_chan_intr_drain(struct vmbus_channel *chan); void vmbus_chan_run_task(struct vmbus_channel *chan, struct task *task); void vmbus_chan_set_orphan(struct vmbus_channel *chan, struct vmbus_xact_ctx *); void vmbus_chan_unset_orphan(struct vmbus_channel *chan); const void *vmbus_chan_xact_wait(const struct vmbus_channel *chan, struct vmbus_xact *xact, size_t *resp_len, bool can_sleep); int vmbus_chan_gpadl_connect(struct vmbus_channel *chan, bus_addr_t paddr, int size, uint32_t *gpadl); int vmbus_chan_gpadl_disconnect(struct vmbus_channel *chan, uint32_t gpadl); void vmbus_chan_cpu_set(struct vmbus_channel *chan, int cpu); void vmbus_chan_cpu_rr(struct vmbus_channel *chan); void vmbus_chan_set_readbatch(struct vmbus_channel *chan, bool on); struct vmbus_channel ** vmbus_subchan_get(struct vmbus_channel *pri_chan, int subchan_cnt); void vmbus_subchan_rel(struct vmbus_channel **subchan, int subchan_cnt); void vmbus_subchan_drain(struct vmbus_channel *pri_chan); int vmbus_chan_recv(struct vmbus_channel *chan, void *data, int *dlen, uint64_t *xactid); int vmbus_chan_recv_pkt(struct vmbus_channel *chan, struct vmbus_chanpkt_hdr *pkt, int *pktlen); int vmbus_chan_recv_idxadv(struct vmbus_channel *chan, uint32_t advance); int vmbus_chan_recv_peek(struct vmbus_channel *chan, void *data, int data_len, uint32_t advance); int vmbus_chan_recv_peek_call(struct vmbus_channel *chan, int data_len, uint32_t skip, vmbus_br_copy_callback_t cb, void *cbarg); int vmbus_chan_send(struct vmbus_channel *chan, uint16_t type, uint16_t flags, void *data, int dlen, uint64_t xactid); int vmbus_chan_send_sglist(struct vmbus_channel *chan, struct vmbus_gpa sg[], int sglen, void *data, int dlen, uint64_t xactid); int vmbus_chan_send_prplist(struct vmbus_channel *chan, struct vmbus_gpa_range *prp, int prp_cnt, void *data, int dlen, uint64_t xactid); int vmbus_chan_iov_send(struct vmbus_channel *chan, const struct iovec iov[], int iovlen, vmbus_br_copy_callback_t cb, void *cbarg); uint32_t vmbus_chan_write_available(struct vmbus_channel *chan); uint32_t vmbus_chan_read_available(struct vmbus_channel *chan); bool vmbus_chan_write_signal(struct vmbus_channel *chan, int32_t min_signal_size); void vmbus_chan_set_pending_send_size(struct vmbus_channel *chan, uint32_t size); uint32_t vmbus_chan_id(const struct vmbus_channel *chan); uint32_t vmbus_chan_subidx(const struct vmbus_channel *chan); bool vmbus_chan_is_primary(const struct vmbus_channel *chan); bool vmbus_chan_is_revoked(const struct vmbus_channel *chan); bool vmbus_chan_is_hvs(const struct vmbus_channel *chan); bool vmbus_chan_is_hvs_conn_from_host( const struct vmbus_channel *chan); int vmbus_req_tl_connect(struct hyperv_guid *, struct hyperv_guid *); struct hyperv_guid * vmbus_chan_guid_type(struct vmbus_channel *chan); struct hyperv_guid * vmbus_chan_guid_inst(struct vmbus_channel *chan); int vmbus_chan_prplist_nelem(int br_size, int prpcnt_max, int dlen_max); bool vmbus_chan_rx_empty(const struct vmbus_channel *chan); bool vmbus_chan_tx_empty(const struct vmbus_channel *chan); struct taskqueue * vmbus_chan_mgmt_tq(const struct vmbus_channel *chan); void vmbus_chan_poll_enable(struct vmbus_channel *chan, u_int pollhz); void vmbus_chan_poll_disable(struct vmbus_channel *chan); #endif /* !_VMBUS_H_ */