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/taskqueue.h> 34 35 #include <dev/hyperv/include/hyperv_busdma.h> 36 37 /* 38 * NOTE: DO NOT CHANGE THIS. 39 */ 40 #define VMBUS_SINT_MESSAGE 2 41 /* 42 * NOTE: 43 * - DO NOT set it to the same value as VMBUS_SINT_MESSAGE. 44 * - DO NOT set it to 0. 45 */ 46 #define VMBUS_SINT_TIMER 4 47 48 /* 49 * NOTE: DO NOT CHANGE THESE 50 */ 51 #define VMBUS_CONNID_MESSAGE 1 52 #define VMBUS_CONNID_EVENT 2 53 54 struct vmbus_message; 55 struct vmbus_softc; 56 57 typedef void (*vmbus_chanmsg_proc_t)(struct vmbus_softc *, 58 const struct vmbus_message *); 59 60 #define VMBUS_CHANMSG_PROC(name, func) \ 61 [VMBUS_CHANMSG_TYPE_##name] = func 62 #define VMBUS_CHANMSG_PROC_WAKEUP(name) \ 63 VMBUS_CHANMSG_PROC(name, vmbus_msghc_wakeup) 64 65 struct vmbus_pcpu_data { 66 u_long *intr_cnt; /* Hyper-V interrupt counter */ 67 struct vmbus_message *message; /* shared messages */ 68 uint32_t vcpuid; /* virtual cpuid */ 69 int event_flags_cnt;/* # of event flags */ 70 struct vmbus_evtflags *event_flags; /* event flags from host */ 71 72 /* Rarely used fields */ 73 struct hyperv_dma message_dma; /* busdma glue */ 74 struct hyperv_dma event_flags_dma;/* busdma glue */ 75 struct taskqueue *event_tq; /* event taskq */ 76 struct taskqueue *message_tq; /* message taskq */ 77 struct task message_task; /* message task */ 78 } __aligned(CACHE_LINE_SIZE); 79 80 struct vmbus_softc { 81 void (*vmbus_event_proc)(struct vmbus_softc *, int); 82 u_long *vmbus_tx_evtflags; 83 /* event flags to host */ 84 struct vmbus_mnf *vmbus_mnf2; /* monitored by host */ 85 86 u_long *vmbus_rx_evtflags; 87 /* compat evtflgs from host */ 88 struct vmbus_channel **vmbus_chmap; 89 struct vmbus_xact_ctx *vmbus_xc; 90 struct vmbus_pcpu_data vmbus_pcpu[MAXCPU]; 91 92 /* 93 * Rarely used fields 94 */ 95 96 device_t vmbus_dev; 97 int vmbus_idtvec; 98 uint32_t vmbus_flags; /* see VMBUS_FLAG_ */ 99 uint32_t vmbus_version; 100 uint32_t vmbus_gpadl; 101 102 /* Shared memory for vmbus_{rx,tx}_evtflags */ 103 void *vmbus_evtflags; 104 struct hyperv_dma vmbus_evtflags_dma; 105 106 void *vmbus_mnf1; /* monitored by VM, unused */ 107 struct hyperv_dma vmbus_mnf1_dma; 108 struct hyperv_dma vmbus_mnf2_dma; 109 110 struct mtx vmbus_scan_lock; 111 uint32_t vmbus_scan_chcnt; 112 #define VMBUS_SCAN_CHCNT_DONE 0x80000000 113 uint32_t vmbus_scan_devcnt; 114 115 /* Primary channels */ 116 struct mtx vmbus_prichan_lock; 117 TAILQ_HEAD(, vmbus_channel) vmbus_prichans; 118 }; 119 120 #define VMBUS_FLAG_ATTACHED 0x0001 /* vmbus was attached */ 121 #define VMBUS_FLAG_SYNIC 0x0002 /* SynIC was setup */ 122 123 #define VMBUS_PCPU_GET(sc, field, cpu) (sc)->vmbus_pcpu[(cpu)].field 124 #define VMBUS_PCPU_PTR(sc, field, cpu) &(sc)->vmbus_pcpu[(cpu)].field 125 126 struct vmbus_channel; 127 struct trapframe; 128 struct vmbus_message; 129 struct vmbus_msghc; 130 131 void vmbus_handle_intr(struct trapframe *); 132 int vmbus_add_child(struct vmbus_channel *); 133 int vmbus_delete_child(struct vmbus_channel *); 134 void vmbus_et_intr(struct trapframe *); 135 uint32_t vmbus_gpadl_alloc(struct vmbus_softc *); 136 137 struct vmbus_msghc * 138 vmbus_msghc_get(struct vmbus_softc *, size_t); 139 void vmbus_msghc_put(struct vmbus_softc *, struct vmbus_msghc *); 140 void *vmbus_msghc_dataptr(struct vmbus_msghc *); 141 int vmbus_msghc_exec_noresult(struct vmbus_msghc *); 142 int vmbus_msghc_exec(struct vmbus_softc *, struct vmbus_msghc *); 143 const struct vmbus_message * 144 vmbus_msghc_wait_result(struct vmbus_softc *, 145 struct vmbus_msghc *); 146 void vmbus_msghc_wakeup(struct vmbus_softc *, 147 const struct vmbus_message *); 148 void vmbus_msghc_reset(struct vmbus_msghc *, size_t); 149 150 #endif /* !_VMBUS_VAR_H_ */ 151