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 #include <sys/bus_dma.h> 34 #include <sys/taskqueue.h> 35 36 #include <dev/hyperv/include/hyperv_busdma.h> 37 38 /* 39 * NOTE: DO NOT CHANGE THIS. 40 */ 41 #define VMBUS_SINT_MESSAGE 2 42 /* 43 * NOTE: 44 * - DO NOT set it to the same value as VMBUS_SINT_MESSAGE. 45 * - DO NOT set it to 0. 46 */ 47 #define VMBUS_SINT_TIMER 4 48 49 struct vmbus_pcpu_data { 50 u_long *intr_cnt; /* Hyper-V interrupt counter */ 51 struct vmbus_message *message; /* shared messages */ 52 uint32_t vcpuid; /* virtual cpuid */ 53 int event_flags_cnt;/* # of event flags */ 54 struct vmbus_evtflags *event_flags; /* event flags from host */ 55 56 /* Rarely used fields */ 57 struct hyperv_dma message_dma; /* busdma glue */ 58 struct hyperv_dma event_flags_dma;/* busdma glue */ 59 struct taskqueue *event_tq; /* event taskq */ 60 struct taskqueue *message_tq; /* message taskq */ 61 struct task message_task; /* message task */ 62 } __aligned(CACHE_LINE_SIZE); 63 64 struct vmbus_softc { 65 void (*vmbus_event_proc)(struct vmbus_softc *, int); 66 u_long *vmbus_tx_evtflags; 67 /* event flags to host */ 68 void *vmbus_mnf2; /* monitored by host */ 69 70 u_long *vmbus_rx_evtflags; 71 /* compat evtflgs from host */ 72 struct vmbus_pcpu_data vmbus_pcpu[MAXCPU]; 73 74 /* Rarely used fields */ 75 device_t vmbus_dev; 76 int vmbus_idtvec; 77 uint32_t vmbus_flags; /* see VMBUS_FLAG_ */ 78 79 /* Shared memory for vmbus_{rx,tx}_evtflags */ 80 void *vmbus_evtflags; 81 struct hyperv_dma vmbus_evtflags_dma; 82 83 void *vmbus_mnf1; /* monitored by VM, unused */ 84 struct hyperv_dma vmbus_mnf1_dma; 85 struct hyperv_dma vmbus_mnf2_dma; 86 }; 87 88 #define VMBUS_FLAG_ATTACHED 0x0001 /* vmbus was attached */ 89 #define VMBUS_FLAG_SYNIC 0x0002 /* SynIC was setup */ 90 91 extern struct vmbus_softc *vmbus_sc; 92 93 static __inline struct vmbus_softc * 94 vmbus_get_softc(void) 95 { 96 return vmbus_sc; 97 } 98 99 static __inline device_t 100 vmbus_get_device(void) 101 { 102 return vmbus_sc->vmbus_dev; 103 } 104 105 #define VMBUS_PCPU_GET(sc, field, cpu) (sc)->vmbus_pcpu[(cpu)].field 106 #define VMBUS_PCPU_PTR(sc, field, cpu) &(sc)->vmbus_pcpu[(cpu)].field 107 108 struct hv_vmbus_channel; 109 struct trapframe; 110 struct vmbus_message; 111 112 void vmbus_on_channel_open(const struct hv_vmbus_channel *); 113 void vmbus_event_proc(struct vmbus_softc *, int); 114 void vmbus_event_proc_compat(struct vmbus_softc *, int); 115 void vmbus_handle_intr(struct trapframe *); 116 117 void vmbus_et_intr(struct trapframe *); 118 119 void vmbus_chan_msgproc(struct vmbus_softc *, const struct vmbus_message *); 120 121 #endif /* !_VMBUS_VAR_H_ */ 122