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 /* 50 * NOTE: DO NOT CHANGE THESE 51 */ 52 #define VMBUS_CONNID_MESSAGE 1 53 #define VMBUS_CONNID_EVENT 2 54 55 struct vmbus_pcpu_data { 56 u_long *intr_cnt; /* Hyper-V interrupt counter */ 57 struct vmbus_message *message; /* shared messages */ 58 uint32_t vcpuid; /* virtual cpuid */ 59 int event_flags_cnt;/* # of event flags */ 60 struct vmbus_evtflags *event_flags; /* event flags from host */ 61 62 /* Rarely used fields */ 63 struct hyperv_dma message_dma; /* busdma glue */ 64 struct hyperv_dma event_flags_dma;/* busdma glue */ 65 struct taskqueue *event_tq; /* event taskq */ 66 struct taskqueue *message_tq; /* message taskq */ 67 struct task message_task; /* message task */ 68 } __aligned(CACHE_LINE_SIZE); 69 70 struct vmbus_softc { 71 void (*vmbus_event_proc)(struct vmbus_softc *, int); 72 u_long *vmbus_tx_evtflags; 73 /* event flags to host */ 74 void *vmbus_mnf2; /* monitored by host */ 75 76 u_long *vmbus_rx_evtflags; 77 /* compat evtflgs from host */ 78 struct vmbus_msghc_ctx *vmbus_msg_hc; 79 struct vmbus_pcpu_data vmbus_pcpu[MAXCPU]; 80 81 /* Rarely used fields */ 82 device_t vmbus_dev; 83 int vmbus_idtvec; 84 uint32_t vmbus_flags; /* see VMBUS_FLAG_ */ 85 86 /* Shared memory for vmbus_{rx,tx}_evtflags */ 87 void *vmbus_evtflags; 88 struct hyperv_dma vmbus_evtflags_dma; 89 90 void *vmbus_mnf1; /* monitored by VM, unused */ 91 struct hyperv_dma vmbus_mnf1_dma; 92 struct hyperv_dma vmbus_mnf2_dma; 93 94 struct mtx vmbus_scan_lock; 95 uint32_t vmbus_scan_chcnt; 96 #define VMBUS_SCAN_CHCNT_DONE 0x80000000 97 uint32_t vmbus_scan_devcnt; 98 }; 99 100 #define VMBUS_FLAG_ATTACHED 0x0001 /* vmbus was attached */ 101 #define VMBUS_FLAG_SYNIC 0x0002 /* SynIC was setup */ 102 103 extern struct vmbus_softc *vmbus_sc; 104 105 static __inline struct vmbus_softc * 106 vmbus_get_softc(void) 107 { 108 return vmbus_sc; 109 } 110 111 static __inline device_t 112 vmbus_get_device(void) 113 { 114 return vmbus_sc->vmbus_dev; 115 } 116 117 #define VMBUS_PCPU_GET(sc, field, cpu) (sc)->vmbus_pcpu[(cpu)].field 118 #define VMBUS_PCPU_PTR(sc, field, cpu) &(sc)->vmbus_pcpu[(cpu)].field 119 120 struct hv_vmbus_channel; 121 struct trapframe; 122 struct vmbus_message; 123 struct vmbus_msghc; 124 125 void vmbus_on_channel_open(const struct hv_vmbus_channel *); 126 void vmbus_event_proc(struct vmbus_softc *, int); 127 void vmbus_event_proc_compat(struct vmbus_softc *, int); 128 void vmbus_handle_intr(struct trapframe *); 129 130 void vmbus_et_intr(struct trapframe *); 131 132 void vmbus_chan_msgproc(struct vmbus_softc *, const struct vmbus_message *); 133 134 struct vmbus_msghc *vmbus_msghc_get(struct vmbus_softc *, size_t); 135 void vmbus_msghc_put(struct vmbus_softc *, struct vmbus_msghc *); 136 void *vmbus_msghc_dataptr(struct vmbus_msghc *); 137 int vmbus_msghc_exec_noresult(struct vmbus_msghc *); 138 int vmbus_msghc_exec(struct vmbus_softc *, struct vmbus_msghc *); 139 const struct vmbus_message *vmbus_msghc_wait_result(struct vmbus_softc *, 140 struct vmbus_msghc *); 141 void vmbus_msghc_wakeup(struct vmbus_softc *, const struct vmbus_message *); 142 void vmbus_msghc_reset(struct vmbus_msghc *, size_t); 143 144 void vmbus_scan_done(struct vmbus_softc *); 145 void vmbus_scan_newchan(struct vmbus_softc *); 146 147 #endif /* !_VMBUS_VAR_H_ */ 148