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_REG_H_ 30 #define _VMBUS_REG_H_ 31 32 #include <sys/param.h> 33 #include <dev/hyperv/include/hyperv.h> /* XXX for hyperv_guid */ 34 #include <dev/hyperv/include/vmbus.h> 35 #include <dev/hyperv/vmbus/hyperv_reg.h> 36 37 /* 38 * Hyper-V SynIC message format. 39 */ 40 41 #define VMBUS_MSG_DSIZE_MAX 240 42 #define VMBUS_MSG_SIZE 256 43 44 struct vmbus_message { 45 uint32_t msg_type; /* HYPERV_MSGTYPE_ */ 46 uint8_t msg_dsize; /* data size */ 47 uint8_t msg_flags; /* VMBUS_MSGFLAG_ */ 48 uint16_t msg_rsvd; 49 uint64_t msg_id; 50 uint8_t msg_data[VMBUS_MSG_DSIZE_MAX]; 51 } __packed; 52 CTASSERT(sizeof(struct vmbus_message) == VMBUS_MSG_SIZE); 53 54 #define VMBUS_MSGFLAG_PENDING 0x01 55 56 /* 57 * Hyper-V SynIC event flags 58 */ 59 60 #ifdef __LP64__ 61 #define VMBUS_EVTFLAGS_MAX 32 62 #define VMBUS_EVTFLAG_SHIFT 6 63 #else 64 #define VMBUS_EVTFLAGS_MAX 64 65 #define VMBUS_EVTFLAG_SHIFT 5 66 #endif 67 #define VMBUS_EVTFLAG_LEN (1 << VMBUS_EVTFLAG_SHIFT) 68 #define VMBUS_EVTFLAG_MASK (VMBUS_EVTFLAG_LEN - 1) 69 #define VMBUS_EVTFLAGS_SIZE 256 70 71 struct vmbus_evtflags { 72 u_long evt_flags[VMBUS_EVTFLAGS_MAX]; 73 } __packed; 74 CTASSERT(sizeof(struct vmbus_evtflags) == VMBUS_EVTFLAGS_SIZE); 75 76 /* 77 * Hyper-V Monitor Notification Facility 78 */ 79 80 struct vmbus_mon_trig { 81 uint32_t mt_pending; 82 uint32_t mt_armed; 83 } __packed; 84 85 #define VMBUS_MONTRIGS_MAX 4 86 #define VMBUS_MONTRIG_LEN 32 87 88 struct vmbus_mnf { 89 uint32_t mnf_state; 90 uint32_t mnf_rsvd1; 91 92 struct vmbus_mon_trig mnf_trigs[VMBUS_MONTRIGS_MAX]; 93 uint8_t mnf_rsvd2[536]; 94 95 uint16_t mnf_lat[VMBUS_MONTRIGS_MAX][VMBUS_MONTRIG_LEN]; 96 uint8_t mnf_rsvd3[256]; 97 98 struct hyperv_mon_param 99 mnf_param[VMBUS_MONTRIGS_MAX][VMBUS_MONTRIG_LEN]; 100 uint8_t mnf_rsvd4[1984]; 101 } __packed; 102 CTASSERT(sizeof(struct vmbus_mnf) == PAGE_SIZE); 103 104 /* 105 * Buffer ring 106 */ 107 struct vmbus_bufring { 108 /* 109 * If br_windex == br_rindex, this bufring is empty; this 110 * means we can _not_ write data to the bufring, if the 111 * write is going to make br_windex same as br_rindex. 112 */ 113 volatile uint32_t br_windex; 114 volatile uint32_t br_rindex; 115 116 /* 117 * Interrupt mask {0,1} 118 * 119 * For TX bufring, host set this to 1, when it is processing 120 * the TX bufring, so that we can safely skip the TX event 121 * notification to host. 122 * 123 * For RX bufring, once this is set to 1 by us, host will not 124 * further dispatch interrupts to us, even if there are data 125 * pending on the RX bufring. This effectively disables the 126 * interrupt of the channel to which this RX bufring is attached. 127 */ 128 volatile uint32_t br_imask; 129 130 uint8_t br_rsvd[4084]; 131 uint8_t br_data[]; 132 } __packed; 133 CTASSERT(sizeof(struct vmbus_bufring) == PAGE_SIZE); 134 135 /* 136 * Channel 137 */ 138 139 #define VMBUS_CHAN_MAX_COMPAT 256 140 #define VMBUS_CHAN_MAX (VMBUS_EVTFLAG_LEN * VMBUS_EVTFLAGS_MAX) 141 142 /* 143 * Channel packets 144 */ 145 146 #define VMBUS_CHANPKT_SIZE_ALIGN (1 << VMBUS_CHANPKT_SIZE_SHIFT) 147 148 #define VMBUS_CHANPKT_SETLEN(pktlen, len) \ 149 do { \ 150 (pktlen) = (len) >> VMBUS_CHANPKT_SIZE_SHIFT; \ 151 } while (0) 152 153 #define VMBUS_CHANPKT_TOTLEN(tlen) \ 154 roundup2((tlen), VMBUS_CHANPKT_SIZE_ALIGN) 155 156 struct vmbus_chanpkt { 157 struct vmbus_chanpkt_hdr cp_hdr; 158 } __packed; 159 160 struct vmbus_chanpkt_sglist { 161 struct vmbus_chanpkt_hdr cp_hdr; 162 uint32_t cp_rsvd; 163 uint32_t cp_gpa_cnt; 164 struct vmbus_gpa cp_gpa[]; 165 } __packed; 166 167 struct vmbus_chanpkt_prplist { 168 struct vmbus_chanpkt_hdr cp_hdr; 169 uint32_t cp_rsvd; 170 uint32_t cp_range_cnt; 171 struct vmbus_gpa_range cp_range[]; 172 } __packed; 173 174 /* 175 * Channel messages 176 * - Embedded in vmbus_message.msg_data, e.g. response and notification. 177 * - Embedded in hypercall_postmsg_in.hc_data, e.g. request. 178 */ 179 180 #define VMBUS_CHANMSG_TYPE_CHOFFER 1 /* NOTE */ 181 #define VMBUS_CHANMSG_TYPE_CHRESCIND 2 /* NOTE */ 182 #define VMBUS_CHANMSG_TYPE_CHREQUEST 3 /* REQ */ 183 #define VMBUS_CHANMSG_TYPE_CHOFFER_DONE 4 /* NOTE */ 184 #define VMBUS_CHANMSG_TYPE_CHOPEN 5 /* REQ */ 185 #define VMBUS_CHANMSG_TYPE_CHOPEN_RESP 6 /* RESP */ 186 #define VMBUS_CHANMSG_TYPE_CHCLOSE 7 /* REQ */ 187 #define VMBUS_CHANMSG_TYPE_GPADL_CONN 8 /* REQ */ 188 #define VMBUS_CHANMSG_TYPE_GPADL_SUBCONN 9 /* REQ */ 189 #define VMBUS_CHANMSG_TYPE_GPADL_CONNRESP 10 /* RESP */ 190 #define VMBUS_CHANMSG_TYPE_GPADL_DISCONN 11 /* REQ */ 191 #define VMBUS_CHANMSG_TYPE_GPADL_DISCONNRESP 12 /* RESP */ 192 #define VMBUS_CHANMSG_TYPE_CHFREE 13 /* REQ */ 193 #define VMBUS_CHANMSG_TYPE_CONNECT 14 /* REQ */ 194 #define VMBUS_CHANMSG_TYPE_CONNECT_RESP 15 /* RESP */ 195 #define VMBUS_CHANMSG_TYPE_DISCONNECT 16 /* REQ */ 196 #define VMBUS_CHANMSG_TYPE_MAX 22 197 198 struct vmbus_chanmsg_hdr { 199 uint32_t chm_type; /* VMBUS_CHANMSG_TYPE_ */ 200 uint32_t chm_rsvd; 201 } __packed; 202 203 /* VMBUS_CHANMSG_TYPE_CONNECT */ 204 struct vmbus_chanmsg_connect { 205 struct vmbus_chanmsg_hdr chm_hdr; 206 uint32_t chm_ver; 207 uint32_t chm_rsvd; 208 uint64_t chm_evtflags; 209 uint64_t chm_mnf1; 210 uint64_t chm_mnf2; 211 } __packed; 212 213 /* VMBUS_CHANMSG_TYPE_CONNECT_RESP */ 214 struct vmbus_chanmsg_connect_resp { 215 struct vmbus_chanmsg_hdr chm_hdr; 216 uint8_t chm_done; 217 } __packed; 218 219 /* VMBUS_CHANMSG_TYPE_CHREQUEST */ 220 struct vmbus_chanmsg_chrequest { 221 struct vmbus_chanmsg_hdr chm_hdr; 222 } __packed; 223 224 /* VMBUS_CHANMSG_TYPE_DISCONNECT */ 225 struct vmbus_chanmsg_disconnect { 226 struct vmbus_chanmsg_hdr chm_hdr; 227 } __packed; 228 229 /* VMBUS_CHANMSG_TYPE_CHOPEN */ 230 struct vmbus_chanmsg_chopen { 231 struct vmbus_chanmsg_hdr chm_hdr; 232 uint32_t chm_chanid; 233 uint32_t chm_openid; 234 uint32_t chm_gpadl; 235 uint32_t chm_vcpuid; 236 uint32_t chm_txbr_pgcnt; 237 #define VMBUS_CHANMSG_CHOPEN_UDATA_SIZE 120 238 uint8_t chm_udata[VMBUS_CHANMSG_CHOPEN_UDATA_SIZE]; 239 } __packed; 240 241 /* VMBUS_CHANMSG_TYPE_CHOPEN_RESP */ 242 struct vmbus_chanmsg_chopen_resp { 243 struct vmbus_chanmsg_hdr chm_hdr; 244 uint32_t chm_chanid; 245 uint32_t chm_openid; 246 uint32_t chm_status; 247 } __packed; 248 249 /* VMBUS_CHANMSG_TYPE_GPADL_CONN */ 250 struct vmbus_chanmsg_gpadl_conn { 251 struct vmbus_chanmsg_hdr chm_hdr; 252 uint32_t chm_chanid; 253 uint32_t chm_gpadl; 254 uint16_t chm_range_len; 255 uint16_t chm_range_cnt; 256 struct vmbus_gpa_range chm_range; 257 } __packed; 258 259 #define VMBUS_CHANMSG_GPADL_CONN_PGMAX 26 260 CTASSERT(__offsetof(struct vmbus_chanmsg_gpadl_conn, 261 chm_range.gpa_page[VMBUS_CHANMSG_GPADL_CONN_PGMAX]) <= 262 HYPERCALL_POSTMSGIN_DSIZE_MAX); 263 264 /* VMBUS_CHANMSG_TYPE_GPADL_SUBCONN */ 265 struct vmbus_chanmsg_gpadl_subconn { 266 struct vmbus_chanmsg_hdr chm_hdr; 267 uint32_t chm_msgno; 268 uint32_t chm_gpadl; 269 uint64_t chm_gpa_page[]; 270 } __packed; 271 272 #define VMBUS_CHANMSG_GPADL_SUBCONN_PGMAX 28 273 CTASSERT(__offsetof(struct vmbus_chanmsg_gpadl_subconn, 274 chm_gpa_page[VMBUS_CHANMSG_GPADL_SUBCONN_PGMAX]) <= 275 HYPERCALL_POSTMSGIN_DSIZE_MAX); 276 277 /* VMBUS_CHANMSG_TYPE_GPADL_CONNRESP */ 278 struct vmbus_chanmsg_gpadl_connresp { 279 struct vmbus_chanmsg_hdr chm_hdr; 280 uint32_t chm_chanid; 281 uint32_t chm_gpadl; 282 uint32_t chm_status; 283 } __packed; 284 285 /* VMBUS_CHANMSG_TYPE_CHCLOSE */ 286 struct vmbus_chanmsg_chclose { 287 struct vmbus_chanmsg_hdr chm_hdr; 288 uint32_t chm_chanid; 289 } __packed; 290 291 /* VMBUS_CHANMSG_TYPE_GPADL_DISCONN */ 292 struct vmbus_chanmsg_gpadl_disconn { 293 struct vmbus_chanmsg_hdr chm_hdr; 294 uint32_t chm_chanid; 295 uint32_t chm_gpadl; 296 } __packed; 297 298 /* VMBUS_CHANMSG_TYPE_CHFREE */ 299 struct vmbus_chanmsg_chfree { 300 struct vmbus_chanmsg_hdr chm_hdr; 301 uint32_t chm_chanid; 302 } __packed; 303 304 /* VMBUS_CHANMSG_TYPE_CHRESCIND */ 305 struct vmbus_chanmsg_chrescind { 306 struct vmbus_chanmsg_hdr chm_hdr; 307 uint32_t chm_chanid; 308 } __packed; 309 310 /* VMBUS_CHANMSG_TYPE_CHOFFER */ 311 struct vmbus_chanmsg_choffer { 312 struct vmbus_chanmsg_hdr chm_hdr; 313 struct hyperv_guid chm_chtype; 314 struct hyperv_guid chm_chinst; 315 uint64_t chm_chlat; /* unit: 100ns */ 316 uint32_t chm_chrev; 317 uint32_t chm_svrctx_sz; 318 uint16_t chm_chflags; 319 uint16_t chm_mmio_sz; /* unit: MB */ 320 uint8_t chm_udata[120]; 321 uint16_t chm_subidx; 322 uint16_t chm_rsvd; 323 uint32_t chm_chanid; 324 uint8_t chm_montrig; 325 uint8_t chm_flags1; /* VMBUS_CHOFFER_FLAG1_ */ 326 uint16_t chm_flags2; 327 uint32_t chm_connid; 328 } __packed; 329 CTASSERT(sizeof(struct vmbus_chanmsg_choffer) <= VMBUS_MSG_DSIZE_MAX); 330 331 #define VMBUS_CHOFFER_FLAG1_HASMNF 0x01 332 333 #endif /* !_VMBUS_REG_H_ */ 334