1 /*- 2 * Copyright (c) 2016 Microsoft Corp. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice unmodified, this list of conditions, and the following 10 * disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #ifndef _VMBUS_VAR_H_ 30 #define _VMBUS_VAR_H_ 31 32 #include <sys/param.h> 33 34 struct vmbus_pcpu_data { 35 struct vmbus_message *message; /* shared messages */ 36 int event_flags_cnt;/* # of event flags */ 37 struct vmbus_evtflags *event_flags; /* event flags from host */ 38 39 struct vmbus_softc *sc; 40 int cpuid; 41 int vcpuid; 42 43 uint64_t timer_last; 44 45 /* 46 * Rarely used fields 47 */ 48 49 struct hyperv_dma message_dma; /* busdma glue */ 50 struct hyperv_dma event_flags_dma;/* busdma glue */ 51 52 /* Interrupt stuffs */ 53 void *intr_hand; 54 struct resource *intr_res; 55 int intr_rid; 56 int intr_vec; 57 char intr_desc[24]; 58 } __cachealign; 59 60 struct vmbus_softc { 61 u_long *vmbus_tx_evtflags; 62 /* event flags to host */ 63 void *vmbus_mnf2; /* monitored by host */ 64 65 u_long *vmbus_rx_evtflags; 66 /* compat evtflgs from host */ 67 struct vmbus_pcpu_data vmbus_pcpu[MAXCPU]; 68 69 /* 70 * Rarely used fields 71 */ 72 73 device_t vmbus_dev; 74 struct vmbus_msghc_ctx *vmbus_msg_hc; 75 uint32_t vmbus_flags; /* see VMBUS_FLAG_ */ 76 uint32_t vmbus_version; /* VMBUS_VERSION_ */ 77 78 /* Shared memory for vmbus_{rx,tx}_evtflags */ 79 void *vmbus_evtflags; 80 struct hyperv_dma vmbus_evtflags_dma; 81 82 void *vmbus_mnf1; /* monitored by VM, unused */ 83 struct hyperv_dma vmbus_mnf1_dma; 84 struct hyperv_dma vmbus_mnf2_dma; 85 }; 86 87 #define VMBUS_FLAG_SYNIC 0x0002 /* SynIC was setup */ 88 89 #define VMBUS_PCPU(sc, cpu) &(sc)->vmbus_pcpu[(cpu)] 90 91 struct vmbus_message; 92 struct vmbus_msghc; 93 94 struct vmbus_msghc *vmbus_msghc_get(struct vmbus_softc *, size_t); 95 void vmbus_msghc_put(struct vmbus_softc *, struct vmbus_msghc *); 96 void *vmbus_msghc_dataptr(struct vmbus_msghc *); 97 int vmbus_msghc_exec_noresult(struct vmbus_msghc *); 98 int vmbus_msghc_exec(struct vmbus_softc *, struct vmbus_msghc *); 99 const struct vmbus_message *vmbus_msghc_wait_result(struct vmbus_softc *, 100 struct vmbus_msghc *); 101 void vmbus_msghc_wakeup(struct vmbus_softc *, const struct vmbus_message *); 102 103 #endif /* !_VMBUS_VAR_H_ */ 104