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 27 #ifndef _VMBUS_VAR_H_ 28 #define _VMBUS_VAR_H_ 29 30 #include <sys/param.h> 31 #include <sys/kernel.h> 32 #include <sys/taskqueue.h> 33 #include <sys/rman.h> 34 35 #include <dev/pci/pcivar.h> 36 #include <dev/pci/pcib_private.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_message; 56 struct vmbus_softc; 57 58 typedef void (*vmbus_chanmsg_proc_t)(struct vmbus_softc *, 59 const struct vmbus_message *); 60 61 #define VMBUS_CHANMSG_PROC(name, func) \ 62 [VMBUS_CHANMSG_TYPE_##name] = func 63 #define VMBUS_CHANMSG_PROC_WAKEUP(name) \ 64 VMBUS_CHANMSG_PROC(name, vmbus_msghc_wakeup) 65 66 struct vmbus_pcpu_data { 67 u_long *intr_cnt; /* Hyper-V interrupt counter */ 68 struct vmbus_message *message; /* shared messages */ 69 uint32_t vcpuid; /* virtual cpuid */ 70 int event_flags_cnt;/* # of event flags */ 71 struct vmbus_evtflags *event_flags; /* event flags from host */ 72 73 /* Rarely used fields */ 74 struct taskqueue *event_tq; /* event taskq */ 75 struct taskqueue *message_tq; /* message taskq */ 76 struct task message_task; /* message task */ 77 } __aligned(CACHE_LINE_SIZE); 78 79 struct vmbus_softc { 80 void (*vmbus_event_proc)(struct vmbus_softc *, int); 81 u_long *vmbus_tx_evtflags; 82 /* event flags to host */ 83 struct vmbus_mnf *vmbus_mnf2; /* monitored by host */ 84 85 u_long *vmbus_rx_evtflags; 86 /* compat evtflgs from host */ 87 struct vmbus_channel *volatile *vmbus_chmap; 88 struct vmbus_xact_ctx *vmbus_xc; 89 struct vmbus_pcpu_data vmbus_pcpu[MAXCPU]; 90 91 /* 92 * Rarely used fields 93 */ 94 95 device_t vmbus_dev; 96 int vmbus_idtvec; 97 uint32_t vmbus_flags; /* see VMBUS_FLAG_ */ 98 uint32_t vmbus_version; 99 uint32_t vmbus_gpadl; 100 101 /* Shared memory for vmbus_{rx,tx}_evtflags */ 102 void *vmbus_evtflags; 103 104 void *vmbus_mnf1; /* monitored by VM, unused */ 105 106 bool vmbus_scandone; 107 struct task vmbus_scandone_task; 108 109 struct taskqueue *vmbus_devtq; /* for dev attach/detach */ 110 struct taskqueue *vmbus_subchtq; /* for sub-chan attach/detach */ 111 112 /* Primary channels */ 113 struct mtx vmbus_prichan_lock; 114 TAILQ_HEAD(, vmbus_channel) vmbus_prichans; 115 116 /* Complete channel list */ 117 struct mtx vmbus_chan_lock; 118 TAILQ_HEAD(, vmbus_channel) vmbus_chans; 119 120 struct intr_config_hook vmbus_intrhook; 121 122 #ifdef NEW_PCIB 123 /* The list of usable MMIO ranges for PCIe pass-through */ 124 struct pcib_host_resources vmbus_mmio_res; 125 #endif 126 127 #if defined(__aarch64__) 128 struct resource *ires; 129 void *icookie; 130 int vector; 131 #endif 132 }; 133 134 #define VMBUS_FLAG_ATTACHED 0x0001 /* vmbus was attached */ 135 #define VMBUS_FLAG_SYNIC 0x0002 /* SynIC was setup */ 136 137 #define VMBUS_PCPU_GET(sc, field, cpu) (sc)->vmbus_pcpu[(cpu)].field 138 #define VMBUS_PCPU_PTR(sc, field, cpu) &(sc)->vmbus_pcpu[(cpu)].field 139 140 struct vmbus_channel; 141 struct trapframe; 142 struct vmbus_message; 143 struct vmbus_msghc; 144 145 void vmbus_handle_intr(struct trapframe *); 146 int vmbus_add_child(struct vmbus_channel *); 147 int vmbus_delete_child(struct vmbus_channel *); 148 #if !defined(__aarch64__) 149 void vmbus_et_intr(struct trapframe *); 150 #endif 151 uint32_t vmbus_gpadl_alloc(struct vmbus_softc *); 152 153 struct vmbus_msghc * 154 vmbus_msghc_get(struct vmbus_softc *, size_t); 155 void vmbus_msghc_put(struct vmbus_softc *, struct vmbus_msghc *); 156 void *vmbus_msghc_dataptr(struct vmbus_msghc *); 157 int vmbus_msghc_exec_noresult(struct vmbus_msghc *); 158 int vmbus_msghc_exec(struct vmbus_softc *, struct vmbus_msghc *); 159 void vmbus_msghc_exec_cancel(struct vmbus_softc *, 160 struct vmbus_msghc *); 161 const struct vmbus_message * 162 vmbus_msghc_wait_result(struct vmbus_softc *, 163 struct vmbus_msghc *); 164 const struct vmbus_message * 165 vmbus_msghc_poll_result(struct vmbus_softc *, 166 struct vmbus_msghc *); 167 void vmbus_msghc_wakeup(struct vmbus_softc *, 168 const struct vmbus_message *); 169 void vmbus_msghc_reset(struct vmbus_msghc *, size_t); 170 171 void vmbus_handle_timer_intr1(struct vmbus_message *msg_base, 172 struct trapframe *frame); 173 174 void vmbus_synic_setup1(void *xsc); 175 void vmbus_synic_teardown1(void); 176 int vmbus_setup_intr1(struct vmbus_softc *sc); 177 void vmbus_intr_teardown1(struct vmbus_softc *sc); 178 #endif /* !_VMBUS_VAR_H_ */ 179