vmbus_var.h revision 307020
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: stable/10/sys/dev/hyperv/vmbus/vmbus_var.h 307020 2016-10-11 07:00:43Z sephe $ 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 54struct vmbus_pcpu_data { 55 u_long *intr_cnt; /* Hyper-V interrupt counter */ 56 struct vmbus_message *message; /* shared messages */ 57 uint32_t vcpuid; /* virtual cpuid */ 58 int event_flags_cnt;/* # of event flags */ 59 struct vmbus_evtflags *event_flags; /* event flags from host */ 60 61 /* Rarely used fields */ 62 struct hyperv_dma message_dma; /* busdma glue */ 63 struct hyperv_dma event_flags_dma;/* busdma glue */ 64 struct taskqueue *event_tq; /* event taskq */ 65 struct taskqueue *message_tq; /* message taskq */ 66 struct task message_task; /* message task */ 67} __aligned(CACHE_LINE_SIZE); 68 69struct vmbus_softc { 70 void (*vmbus_event_proc)(struct vmbus_softc *, int); 71 u_long *vmbus_tx_evtflags; 72 /* event flags to host */ 73 void *vmbus_mnf2; /* monitored by host */ 74 75 u_long *vmbus_rx_evtflags; 76 /* compat evtflgs from host */ 77 struct hv_vmbus_channel **vmbus_chmap; 78 struct vmbus_msghc_ctx *vmbus_msg_hc; 79 struct vmbus_pcpu_data vmbus_pcpu[MAXCPU]; 80 81 /* 82 * Rarely used fields 83 */ 84 85 device_t vmbus_dev; 86 int vmbus_idtvec; 87 uint32_t vmbus_flags; /* see VMBUS_FLAG_ */ 88 uint32_t vmbus_version; 89 uint32_t vmbus_gpadl; 90 91 /* Shared memory for vmbus_{rx,tx}_evtflags */ 92 void *vmbus_evtflags; 93 struct hyperv_dma vmbus_evtflags_dma; 94 95 void *vmbus_mnf1; /* monitored by VM, unused */ 96 struct hyperv_dma vmbus_mnf1_dma; 97 struct hyperv_dma vmbus_mnf2_dma; 98 99 struct mtx vmbus_scan_lock; 100 uint32_t vmbus_scan_chcnt; 101#define VMBUS_SCAN_CHCNT_DONE 0x80000000 102 uint32_t vmbus_scan_devcnt; 103 104 struct mtx vmbus_chlist_lock; 105 TAILQ_HEAD(, hv_vmbus_channel) vmbus_chlist; 106}; 107 108#define VMBUS_FLAG_ATTACHED 0x0001 /* vmbus was attached */ 109#define VMBUS_FLAG_SYNIC 0x0002 /* SynIC was setup */ 110 111extern struct vmbus_softc *vmbus_sc; 112 113static __inline struct vmbus_softc * 114vmbus_get_softc(void) 115{ 116 return vmbus_sc; 117} 118 119static __inline device_t 120vmbus_get_device(void) 121{ 122 return vmbus_sc->vmbus_dev; 123} 124 125#define VMBUS_PCPU_GET(sc, field, cpu) (sc)->vmbus_pcpu[(cpu)].field 126#define VMBUS_PCPU_PTR(sc, field, cpu) &(sc)->vmbus_pcpu[(cpu)].field 127 128struct hv_vmbus_channel; 129struct trapframe; 130struct vmbus_message; 131struct vmbus_msghc; 132 133void vmbus_event_proc(struct vmbus_softc *, int); 134void vmbus_event_proc_compat(struct vmbus_softc *, int); 135void vmbus_handle_intr(struct trapframe *); 136 137void vmbus_et_intr(struct trapframe *); 138 139void vmbus_chan_msgproc(struct vmbus_softc *, const struct vmbus_message *); 140 141struct vmbus_msghc *vmbus_msghc_get(struct vmbus_softc *, size_t); 142void vmbus_msghc_put(struct vmbus_softc *, struct vmbus_msghc *); 143void *vmbus_msghc_dataptr(struct vmbus_msghc *); 144int vmbus_msghc_exec_noresult(struct vmbus_msghc *); 145int vmbus_msghc_exec(struct vmbus_softc *, struct vmbus_msghc *); 146const struct vmbus_message *vmbus_msghc_wait_result(struct vmbus_softc *, 147 struct vmbus_msghc *); 148void vmbus_msghc_wakeup(struct vmbus_softc *, const struct vmbus_message *); 149void vmbus_msghc_reset(struct vmbus_msghc *, size_t); 150 151void vmbus_scan_done(struct vmbus_softc *); 152void vmbus_scan_newchan(struct vmbus_softc *); 153 154uint32_t vmbus_gpadl_alloc(struct vmbus_softc *); 155 156#endif /* !_VMBUS_VAR_H_ */ 157