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/hyperv/include/hyperv_busdma.h> 36 #include <dev/pci/pcivar.h> 37 #include <dev/pci/pcib_private.h> 38 39 /* 40 * NOTE: DO NOT CHANGE THIS. 41 */ 42 #define VMBUS_SINT_MESSAGE 2 43 /* 44 * NOTE: 45 * - DO NOT set it to the same value as VMBUS_SINT_MESSAGE. 46 * - DO NOT set it to 0. 47 */ 48 #define VMBUS_SINT_TIMER 4 49 50 /* 51 * NOTE: DO NOT CHANGE THESE 52 */ 53 #define VMBUS_CONNID_MESSAGE 1 54 #define VMBUS_CONNID_EVENT 2 55 56 struct vmbus_message; 57 struct vmbus_softc; 58 59 typedef void (*vmbus_chanmsg_proc_t)(struct vmbus_softc *, 60 const struct vmbus_message *); 61 62 #define VMBUS_CHANMSG_PROC(name, func) \ 63 [VMBUS_CHANMSG_TYPE_##name] = func 64 #define VMBUS_CHANMSG_PROC_WAKEUP(name) \ 65 VMBUS_CHANMSG_PROC(name, vmbus_msghc_wakeup) 66 67 struct vmbus_pcpu_data { 68 u_long *intr_cnt; /* Hyper-V interrupt counter */ 69 struct vmbus_message *message; /* shared messages */ 70 uint32_t vcpuid; /* virtual cpuid */ 71 int event_flags_cnt;/* # of event flags */ 72 struct vmbus_evtflags *event_flags; /* event flags from host */ 73 74 /* Rarely used fields */ 75 struct hyperv_dma message_dma; /* busdma glue */ 76 struct hyperv_dma event_flags_dma;/* busdma glue */ 77 struct taskqueue *event_tq; /* event taskq */ 78 struct taskqueue *message_tq; /* message taskq */ 79 struct task message_task; /* message task */ 80 } __aligned(CACHE_LINE_SIZE); 81 82 #if __FreeBSD_version < 1100000 83 typedef u_long rman_res_t; 84 #endif 85 86 struct vmbus_softc { 87 void (*vmbus_event_proc)(struct vmbus_softc *, int); 88 u_long *vmbus_tx_evtflags; 89 /* event flags to host */ 90 struct vmbus_mnf *vmbus_mnf2; /* monitored by host */ 91 92 u_long *vmbus_rx_evtflags; 93 /* compat evtflgs from host */ 94 struct vmbus_channel *volatile *vmbus_chmap; 95 struct vmbus_xact_ctx *vmbus_xc; 96 struct vmbus_pcpu_data vmbus_pcpu[MAXCPU]; 97 98 /* 99 * Rarely used fields 100 */ 101 102 device_t vmbus_dev; 103 int vmbus_idtvec; 104 uint32_t vmbus_flags; /* see VMBUS_FLAG_ */ 105 uint32_t vmbus_version; 106 uint32_t vmbus_gpadl; 107 108 /* Shared memory for vmbus_{rx,tx}_evtflags */ 109 void *vmbus_evtflags; 110 struct hyperv_dma vmbus_evtflags_dma; 111 112 void *vmbus_mnf1; /* monitored by VM, unused */ 113 struct hyperv_dma vmbus_mnf1_dma; 114 struct hyperv_dma vmbus_mnf2_dma; 115 116 bool vmbus_scandone; 117 struct task vmbus_scandone_task; 118 119 struct taskqueue *vmbus_devtq; /* for dev attach/detach */ 120 struct taskqueue *vmbus_subchtq; /* for sub-chan attach/detach */ 121 122 /* Primary channels */ 123 struct mtx vmbus_prichan_lock; 124 TAILQ_HEAD(, vmbus_channel) vmbus_prichans; 125 126 /* Complete channel list */ 127 struct mtx vmbus_chan_lock; 128 TAILQ_HEAD(, vmbus_channel) vmbus_chans; 129 130 struct intr_config_hook vmbus_intrhook; 131 132 #ifdef NEW_PCIB 133 /* The list of usable MMIO ranges for PCIe pass-through */ 134 struct pcib_host_resources vmbus_mmio_res; 135 #endif 136 }; 137 138 #define VMBUS_FLAG_ATTACHED 0x0001 /* vmbus was attached */ 139 #define VMBUS_FLAG_SYNIC 0x0002 /* SynIC was setup */ 140 141 #define VMBUS_PCPU_GET(sc, field, cpu) (sc)->vmbus_pcpu[(cpu)].field 142 #define VMBUS_PCPU_PTR(sc, field, cpu) &(sc)->vmbus_pcpu[(cpu)].field 143 144 struct vmbus_channel; 145 struct trapframe; 146 struct vmbus_message; 147 struct vmbus_msghc; 148 149 void vmbus_handle_intr(struct trapframe *); 150 int vmbus_add_child(struct vmbus_channel *); 151 int vmbus_delete_child(struct vmbus_channel *); 152 void vmbus_et_intr(struct trapframe *); 153 uint32_t vmbus_gpadl_alloc(struct vmbus_softc *); 154 155 struct vmbus_msghc * 156 vmbus_msghc_get(struct vmbus_softc *, size_t); 157 void vmbus_msghc_put(struct vmbus_softc *, struct vmbus_msghc *); 158 void *vmbus_msghc_dataptr(struct vmbus_msghc *); 159 int vmbus_msghc_exec_noresult(struct vmbus_msghc *); 160 int vmbus_msghc_exec(struct vmbus_softc *, struct vmbus_msghc *); 161 void vmbus_msghc_exec_cancel(struct vmbus_softc *, 162 struct vmbus_msghc *); 163 const struct vmbus_message * 164 vmbus_msghc_wait_result(struct vmbus_softc *, 165 struct vmbus_msghc *); 166 const struct vmbus_message * 167 vmbus_msghc_poll_result(struct vmbus_softc *, 168 struct vmbus_msghc *); 169 void vmbus_msghc_wakeup(struct vmbus_softc *, 170 const struct vmbus_message *); 171 void vmbus_msghc_reset(struct vmbus_msghc *, size_t); 172 173 #endif /* !_VMBUS_VAR_H_ */ 174