1b7bb4816SSepherosa Ziehau /*- 2b7bb4816SSepherosa Ziehau * Copyright (c) 2009-2012,2016 Microsoft Corp. 3b7bb4816SSepherosa Ziehau * Copyright (c) 2012 NetApp Inc. 4b7bb4816SSepherosa Ziehau * Copyright (c) 2012 Citrix Inc. 5b7bb4816SSepherosa Ziehau * All rights reserved. 6b7bb4816SSepherosa Ziehau * 7b7bb4816SSepherosa Ziehau * Redistribution and use in source and binary forms, with or without 8b7bb4816SSepherosa Ziehau * modification, are permitted provided that the following conditions 9b7bb4816SSepherosa Ziehau * are met: 10b7bb4816SSepherosa Ziehau * 1. Redistributions of source code must retain the above copyright 11b7bb4816SSepherosa Ziehau * notice unmodified, this list of conditions, and the following 12b7bb4816SSepherosa Ziehau * disclaimer. 13b7bb4816SSepherosa Ziehau * 2. Redistributions in binary form must reproduce the above copyright 14b7bb4816SSepherosa Ziehau * notice, this list of conditions and the following disclaimer in the 15b7bb4816SSepherosa Ziehau * documentation and/or other materials provided with the distribution. 16b7bb4816SSepherosa Ziehau * 17b7bb4816SSepherosa Ziehau * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18b7bb4816SSepherosa Ziehau * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19b7bb4816SSepherosa Ziehau * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20b7bb4816SSepherosa Ziehau * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21b7bb4816SSepherosa Ziehau * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22b7bb4816SSepherosa Ziehau * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23b7bb4816SSepherosa Ziehau * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24b7bb4816SSepherosa Ziehau * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25b7bb4816SSepherosa Ziehau * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26b7bb4816SSepherosa Ziehau * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27b7bb4816SSepherosa Ziehau */ 28b7bb4816SSepherosa Ziehau 29b7bb4816SSepherosa Ziehau /* 30b7bb4816SSepherosa Ziehau * VM Bus Driver Implementation 31b7bb4816SSepherosa Ziehau */ 32b7bb4816SSepherosa Ziehau #include <sys/cdefs.h> 33b7bb4816SSepherosa Ziehau __FBSDID("$FreeBSD$"); 34b7bb4816SSepherosa Ziehau 35b7bb4816SSepherosa Ziehau #include <sys/param.h> 36b7bb4816SSepherosa Ziehau #include <sys/bus.h> 37b7bb4816SSepherosa Ziehau #include <sys/kernel.h> 38b7bb4816SSepherosa Ziehau #include <sys/lock.h> 39b7bb4816SSepherosa Ziehau #include <sys/malloc.h> 40b7bb4816SSepherosa Ziehau #include <sys/module.h> 41b7bb4816SSepherosa Ziehau #include <sys/proc.h> 42b7bb4816SSepherosa Ziehau #include <sys/sysctl.h> 43b7bb4816SSepherosa Ziehau #include <sys/syslog.h> 44b7bb4816SSepherosa Ziehau #include <sys/systm.h> 45b7bb4816SSepherosa Ziehau #include <sys/rtprio.h> 46b7bb4816SSepherosa Ziehau #include <sys/interrupt.h> 47b7bb4816SSepherosa Ziehau #include <sys/sx.h> 48b7bb4816SSepherosa Ziehau #include <sys/taskqueue.h> 49b7bb4816SSepherosa Ziehau #include <sys/mutex.h> 50b7bb4816SSepherosa Ziehau #include <sys/smp.h> 51b7bb4816SSepherosa Ziehau 52b7bb4816SSepherosa Ziehau #include <machine/resource.h> 53b7bb4816SSepherosa Ziehau #include <sys/rman.h> 54b7bb4816SSepherosa Ziehau 55b7bb4816SSepherosa Ziehau #include <machine/stdarg.h> 56b7bb4816SSepherosa Ziehau #include <machine/intr_machdep.h> 57b7bb4816SSepherosa Ziehau #include <machine/md_var.h> 58b7bb4816SSepherosa Ziehau #include <machine/segments.h> 59b7bb4816SSepherosa Ziehau #include <sys/pcpu.h> 60b7bb4816SSepherosa Ziehau #include <x86/apicvar.h> 61b7bb4816SSepherosa Ziehau 62b7bb4816SSepherosa Ziehau #include <dev/hyperv/include/hyperv.h> 63b7bb4816SSepherosa Ziehau #include <dev/hyperv/vmbus/hv_vmbus_priv.h> 64b7bb4816SSepherosa Ziehau #include <dev/hyperv/vmbus/hyperv_reg.h> 65b7bb4816SSepherosa Ziehau #include <dev/hyperv/vmbus/hyperv_var.h> 66b7bb4816SSepherosa Ziehau #include <dev/hyperv/vmbus/vmbus_reg.h> 67b7bb4816SSepherosa Ziehau #include <dev/hyperv/vmbus/vmbus_var.h> 68b7bb4816SSepherosa Ziehau 69b7bb4816SSepherosa Ziehau #include <contrib/dev/acpica/include/acpi.h> 70b7bb4816SSepherosa Ziehau #include "acpi_if.h" 7138d19df6SSepherosa Ziehau #include "vmbus_if.h" 72b7bb4816SSepherosa Ziehau 73ee7e313fSSepherosa Ziehau #define VMBUS_GPADL_START 0xe1e10 74ee7e313fSSepherosa Ziehau 75236764b1SSepherosa Ziehau struct vmbus_msghc { 76236764b1SSepherosa Ziehau struct hypercall_postmsg_in *mh_inprm; 77236764b1SSepherosa Ziehau struct hypercall_postmsg_in mh_inprm_save; 78236764b1SSepherosa Ziehau struct hyperv_dma mh_inprm_dma; 79236764b1SSepherosa Ziehau 80236764b1SSepherosa Ziehau struct vmbus_message *mh_resp; 81236764b1SSepherosa Ziehau struct vmbus_message mh_resp0; 82236764b1SSepherosa Ziehau }; 83236764b1SSepherosa Ziehau 84236764b1SSepherosa Ziehau struct vmbus_msghc_ctx { 85236764b1SSepherosa Ziehau struct vmbus_msghc *mhc_free; 86236764b1SSepherosa Ziehau struct mtx mhc_free_lock; 87236764b1SSepherosa Ziehau uint32_t mhc_flags; 88236764b1SSepherosa Ziehau 89236764b1SSepherosa Ziehau struct vmbus_msghc *mhc_active; 90236764b1SSepherosa Ziehau struct mtx mhc_active_lock; 91236764b1SSepherosa Ziehau }; 92236764b1SSepherosa Ziehau 93236764b1SSepherosa Ziehau #define VMBUS_MSGHC_CTXF_DESTROY 0x0001 94236764b1SSepherosa Ziehau 95236764b1SSepherosa Ziehau static int vmbus_init(struct vmbus_softc *); 96f24517f0SSepherosa Ziehau static int vmbus_connect(struct vmbus_softc *, uint32_t); 97c1cc5bdfSSepherosa Ziehau static int vmbus_req_channels(struct vmbus_softc *sc); 98f24517f0SSepherosa Ziehau static void vmbus_disconnect(struct vmbus_softc *); 99796a90bfSSepherosa Ziehau static int vmbus_scan(struct vmbus_softc *); 100796a90bfSSepherosa Ziehau static void vmbus_scan_wait(struct vmbus_softc *); 101796a90bfSSepherosa Ziehau static void vmbus_scan_newdev(struct vmbus_softc *); 102236764b1SSepherosa Ziehau 10347a3ee5cSSepherosa Ziehau static int vmbus_sysctl_version(SYSCTL_HANDLER_ARGS); 10447a3ee5cSSepherosa Ziehau 105236764b1SSepherosa Ziehau static struct vmbus_msghc_ctx *vmbus_msghc_ctx_create(bus_dma_tag_t); 106236764b1SSepherosa Ziehau static void vmbus_msghc_ctx_destroy( 107236764b1SSepherosa Ziehau struct vmbus_msghc_ctx *); 108236764b1SSepherosa Ziehau static void vmbus_msghc_ctx_free(struct vmbus_msghc_ctx *); 109236764b1SSepherosa Ziehau static struct vmbus_msghc *vmbus_msghc_alloc(bus_dma_tag_t); 110236764b1SSepherosa Ziehau static void vmbus_msghc_free(struct vmbus_msghc *); 111236764b1SSepherosa Ziehau static struct vmbus_msghc *vmbus_msghc_get1(struct vmbus_msghc_ctx *, 112236764b1SSepherosa Ziehau uint32_t); 113236764b1SSepherosa Ziehau 114b7bb4816SSepherosa Ziehau struct vmbus_softc *vmbus_sc; 115b7bb4816SSepherosa Ziehau 116b7bb4816SSepherosa Ziehau extern inthand_t IDTVEC(vmbus_isr); 117b7bb4816SSepherosa Ziehau 118236764b1SSepherosa Ziehau static const uint32_t vmbus_version[] = { 11938d19df6SSepherosa Ziehau VMBUS_VERSION_WIN8_1, 12038d19df6SSepherosa Ziehau VMBUS_VERSION_WIN8, 12138d19df6SSepherosa Ziehau VMBUS_VERSION_WIN7, 12238d19df6SSepherosa Ziehau VMBUS_VERSION_WS2008 123236764b1SSepherosa Ziehau }; 124236764b1SSepherosa Ziehau 125236764b1SSepherosa Ziehau static struct vmbus_msghc * 126236764b1SSepherosa Ziehau vmbus_msghc_alloc(bus_dma_tag_t parent_dtag) 127236764b1SSepherosa Ziehau { 128236764b1SSepherosa Ziehau struct vmbus_msghc *mh; 129236764b1SSepherosa Ziehau 130236764b1SSepherosa Ziehau mh = malloc(sizeof(*mh), M_DEVBUF, M_WAITOK | M_ZERO); 131236764b1SSepherosa Ziehau 132236764b1SSepherosa Ziehau mh->mh_inprm = hyperv_dmamem_alloc(parent_dtag, 133a570251dSSepherosa Ziehau HYPERCALL_PARAM_ALIGN, 0, HYPERCALL_POSTMSGIN_SIZE, 134236764b1SSepherosa Ziehau &mh->mh_inprm_dma, BUS_DMA_WAITOK); 135236764b1SSepherosa Ziehau if (mh->mh_inprm == NULL) { 136236764b1SSepherosa Ziehau free(mh, M_DEVBUF); 137236764b1SSepherosa Ziehau return NULL; 138236764b1SSepherosa Ziehau } 139236764b1SSepherosa Ziehau return mh; 140236764b1SSepherosa Ziehau } 141236764b1SSepherosa Ziehau 142236764b1SSepherosa Ziehau static void 143236764b1SSepherosa Ziehau vmbus_msghc_free(struct vmbus_msghc *mh) 144236764b1SSepherosa Ziehau { 145236764b1SSepherosa Ziehau hyperv_dmamem_free(&mh->mh_inprm_dma, mh->mh_inprm); 146236764b1SSepherosa Ziehau free(mh, M_DEVBUF); 147236764b1SSepherosa Ziehau } 148236764b1SSepherosa Ziehau 149236764b1SSepherosa Ziehau static void 150236764b1SSepherosa Ziehau vmbus_msghc_ctx_free(struct vmbus_msghc_ctx *mhc) 151236764b1SSepherosa Ziehau { 152236764b1SSepherosa Ziehau KASSERT(mhc->mhc_active == NULL, ("still have active msg hypercall")); 153236764b1SSepherosa Ziehau KASSERT(mhc->mhc_free == NULL, ("still have hypercall msg")); 154236764b1SSepherosa Ziehau 155236764b1SSepherosa Ziehau mtx_destroy(&mhc->mhc_free_lock); 156236764b1SSepherosa Ziehau mtx_destroy(&mhc->mhc_active_lock); 157236764b1SSepherosa Ziehau free(mhc, M_DEVBUF); 158236764b1SSepherosa Ziehau } 159236764b1SSepherosa Ziehau 160236764b1SSepherosa Ziehau static struct vmbus_msghc_ctx * 161236764b1SSepherosa Ziehau vmbus_msghc_ctx_create(bus_dma_tag_t parent_dtag) 162236764b1SSepherosa Ziehau { 163236764b1SSepherosa Ziehau struct vmbus_msghc_ctx *mhc; 164236764b1SSepherosa Ziehau 165236764b1SSepherosa Ziehau mhc = malloc(sizeof(*mhc), M_DEVBUF, M_WAITOK | M_ZERO); 166236764b1SSepherosa Ziehau mtx_init(&mhc->mhc_free_lock, "vmbus msghc free", NULL, MTX_DEF); 167236764b1SSepherosa Ziehau mtx_init(&mhc->mhc_active_lock, "vmbus msghc act", NULL, MTX_DEF); 168236764b1SSepherosa Ziehau 169236764b1SSepherosa Ziehau mhc->mhc_free = vmbus_msghc_alloc(parent_dtag); 170236764b1SSepherosa Ziehau if (mhc->mhc_free == NULL) { 171236764b1SSepherosa Ziehau vmbus_msghc_ctx_free(mhc); 172236764b1SSepherosa Ziehau return NULL; 173236764b1SSepherosa Ziehau } 174236764b1SSepherosa Ziehau return mhc; 175236764b1SSepherosa Ziehau } 176236764b1SSepherosa Ziehau 177236764b1SSepherosa Ziehau static struct vmbus_msghc * 178236764b1SSepherosa Ziehau vmbus_msghc_get1(struct vmbus_msghc_ctx *mhc, uint32_t dtor_flag) 179236764b1SSepherosa Ziehau { 180236764b1SSepherosa Ziehau struct vmbus_msghc *mh; 181236764b1SSepherosa Ziehau 182236764b1SSepherosa Ziehau mtx_lock(&mhc->mhc_free_lock); 183236764b1SSepherosa Ziehau 184236764b1SSepherosa Ziehau while ((mhc->mhc_flags & dtor_flag) == 0 && mhc->mhc_free == NULL) { 185236764b1SSepherosa Ziehau mtx_sleep(&mhc->mhc_free, &mhc->mhc_free_lock, 0, 186236764b1SSepherosa Ziehau "gmsghc", 0); 187236764b1SSepherosa Ziehau } 188236764b1SSepherosa Ziehau if (mhc->mhc_flags & dtor_flag) { 189236764b1SSepherosa Ziehau /* Being destroyed */ 190236764b1SSepherosa Ziehau mh = NULL; 191236764b1SSepherosa Ziehau } else { 192236764b1SSepherosa Ziehau mh = mhc->mhc_free; 193236764b1SSepherosa Ziehau KASSERT(mh != NULL, ("no free hypercall msg")); 194236764b1SSepherosa Ziehau KASSERT(mh->mh_resp == NULL, 195236764b1SSepherosa Ziehau ("hypercall msg has pending response")); 196236764b1SSepherosa Ziehau mhc->mhc_free = NULL; 197236764b1SSepherosa Ziehau } 198236764b1SSepherosa Ziehau 199236764b1SSepherosa Ziehau mtx_unlock(&mhc->mhc_free_lock); 200236764b1SSepherosa Ziehau 201236764b1SSepherosa Ziehau return mh; 202236764b1SSepherosa Ziehau } 203236764b1SSepherosa Ziehau 2042bf62f9aSSepherosa Ziehau void 2052bf62f9aSSepherosa Ziehau vmbus_msghc_reset(struct vmbus_msghc *mh, size_t dsize) 206236764b1SSepherosa Ziehau { 207236764b1SSepherosa Ziehau struct hypercall_postmsg_in *inprm; 208236764b1SSepherosa Ziehau 209236764b1SSepherosa Ziehau if (dsize > HYPERCALL_POSTMSGIN_DSIZE_MAX) 2102bf62f9aSSepherosa Ziehau panic("invalid data size %zu", dsize); 211236764b1SSepherosa Ziehau 212236764b1SSepherosa Ziehau inprm = mh->mh_inprm; 213236764b1SSepherosa Ziehau memset(inprm, 0, HYPERCALL_POSTMSGIN_SIZE); 214236764b1SSepherosa Ziehau inprm->hc_connid = VMBUS_CONNID_MESSAGE; 215236764b1SSepherosa Ziehau inprm->hc_msgtype = HYPERV_MSGTYPE_CHANNEL; 216236764b1SSepherosa Ziehau inprm->hc_dsize = dsize; 2172bf62f9aSSepherosa Ziehau } 218236764b1SSepherosa Ziehau 2192bf62f9aSSepherosa Ziehau struct vmbus_msghc * 2202bf62f9aSSepherosa Ziehau vmbus_msghc_get(struct vmbus_softc *sc, size_t dsize) 2212bf62f9aSSepherosa Ziehau { 2222bf62f9aSSepherosa Ziehau struct vmbus_msghc *mh; 2232bf62f9aSSepherosa Ziehau 2242bf62f9aSSepherosa Ziehau if (dsize > HYPERCALL_POSTMSGIN_DSIZE_MAX) 2252bf62f9aSSepherosa Ziehau panic("invalid data size %zu", dsize); 2262bf62f9aSSepherosa Ziehau 2272bf62f9aSSepherosa Ziehau mh = vmbus_msghc_get1(sc->vmbus_msg_hc, VMBUS_MSGHC_CTXF_DESTROY); 2282bf62f9aSSepherosa Ziehau if (mh == NULL) 2292bf62f9aSSepherosa Ziehau return NULL; 2302bf62f9aSSepherosa Ziehau 2312bf62f9aSSepherosa Ziehau vmbus_msghc_reset(mh, dsize); 232236764b1SSepherosa Ziehau return mh; 233236764b1SSepherosa Ziehau } 234236764b1SSepherosa Ziehau 235236764b1SSepherosa Ziehau void 236236764b1SSepherosa Ziehau vmbus_msghc_put(struct vmbus_softc *sc, struct vmbus_msghc *mh) 237236764b1SSepherosa Ziehau { 238236764b1SSepherosa Ziehau struct vmbus_msghc_ctx *mhc = sc->vmbus_msg_hc; 239236764b1SSepherosa Ziehau 240236764b1SSepherosa Ziehau KASSERT(mhc->mhc_active == NULL, ("msg hypercall is active")); 241236764b1SSepherosa Ziehau mh->mh_resp = NULL; 242236764b1SSepherosa Ziehau 243236764b1SSepherosa Ziehau mtx_lock(&mhc->mhc_free_lock); 244236764b1SSepherosa Ziehau KASSERT(mhc->mhc_free == NULL, ("has free hypercall msg")); 245236764b1SSepherosa Ziehau mhc->mhc_free = mh; 246236764b1SSepherosa Ziehau mtx_unlock(&mhc->mhc_free_lock); 247236764b1SSepherosa Ziehau wakeup(&mhc->mhc_free); 248236764b1SSepherosa Ziehau } 249236764b1SSepherosa Ziehau 250236764b1SSepherosa Ziehau void * 251236764b1SSepherosa Ziehau vmbus_msghc_dataptr(struct vmbus_msghc *mh) 252236764b1SSepherosa Ziehau { 253236764b1SSepherosa Ziehau return mh->mh_inprm->hc_data; 254236764b1SSepherosa Ziehau } 255236764b1SSepherosa Ziehau 256236764b1SSepherosa Ziehau static void 257236764b1SSepherosa Ziehau vmbus_msghc_ctx_destroy(struct vmbus_msghc_ctx *mhc) 258236764b1SSepherosa Ziehau { 259236764b1SSepherosa Ziehau struct vmbus_msghc *mh; 260236764b1SSepherosa Ziehau 261236764b1SSepherosa Ziehau mtx_lock(&mhc->mhc_free_lock); 262236764b1SSepherosa Ziehau mhc->mhc_flags |= VMBUS_MSGHC_CTXF_DESTROY; 263236764b1SSepherosa Ziehau mtx_unlock(&mhc->mhc_free_lock); 264236764b1SSepherosa Ziehau wakeup(&mhc->mhc_free); 265236764b1SSepherosa Ziehau 266236764b1SSepherosa Ziehau mh = vmbus_msghc_get1(mhc, 0); 267236764b1SSepherosa Ziehau if (mh == NULL) 268236764b1SSepherosa Ziehau panic("can't get msghc"); 269236764b1SSepherosa Ziehau 270236764b1SSepherosa Ziehau vmbus_msghc_free(mh); 271236764b1SSepherosa Ziehau vmbus_msghc_ctx_free(mhc); 272236764b1SSepherosa Ziehau } 273236764b1SSepherosa Ziehau 274236764b1SSepherosa Ziehau int 275236764b1SSepherosa Ziehau vmbus_msghc_exec_noresult(struct vmbus_msghc *mh) 276236764b1SSepherosa Ziehau { 277236764b1SSepherosa Ziehau sbintime_t time = SBT_1MS; 278236764b1SSepherosa Ziehau int i; 279236764b1SSepherosa Ziehau 280236764b1SSepherosa Ziehau /* 281236764b1SSepherosa Ziehau * Save the input parameter so that we could restore the input 282236764b1SSepherosa Ziehau * parameter if the Hypercall failed. 283236764b1SSepherosa Ziehau * 284236764b1SSepherosa Ziehau * XXX 285236764b1SSepherosa Ziehau * Is this really necessary?! i.e. Will the Hypercall ever 286236764b1SSepherosa Ziehau * overwrite the input parameter? 287236764b1SSepherosa Ziehau */ 288236764b1SSepherosa Ziehau memcpy(&mh->mh_inprm_save, mh->mh_inprm, HYPERCALL_POSTMSGIN_SIZE); 289236764b1SSepherosa Ziehau 290236764b1SSepherosa Ziehau /* 291236764b1SSepherosa Ziehau * In order to cope with transient failures, e.g. insufficient 292236764b1SSepherosa Ziehau * resources on host side, we retry the post message Hypercall 293236764b1SSepherosa Ziehau * several times. 20 retries seem sufficient. 294236764b1SSepherosa Ziehau */ 295236764b1SSepherosa Ziehau #define HC_RETRY_MAX 20 296236764b1SSepherosa Ziehau 297236764b1SSepherosa Ziehau for (i = 0; i < HC_RETRY_MAX; ++i) { 298236764b1SSepherosa Ziehau uint64_t status; 299236764b1SSepherosa Ziehau 300236764b1SSepherosa Ziehau status = hypercall_post_message(mh->mh_inprm_dma.hv_paddr); 301236764b1SSepherosa Ziehau if (status == HYPERCALL_STATUS_SUCCESS) 302236764b1SSepherosa Ziehau return 0; 303236764b1SSepherosa Ziehau 304236764b1SSepherosa Ziehau pause_sbt("hcpmsg", time, 0, C_HARDCLOCK); 305236764b1SSepherosa Ziehau if (time < SBT_1S * 2) 306236764b1SSepherosa Ziehau time *= 2; 307236764b1SSepherosa Ziehau 308236764b1SSepherosa Ziehau /* Restore input parameter and try again */ 309236764b1SSepherosa Ziehau memcpy(mh->mh_inprm, &mh->mh_inprm_save, 310236764b1SSepherosa Ziehau HYPERCALL_POSTMSGIN_SIZE); 311236764b1SSepherosa Ziehau } 312236764b1SSepherosa Ziehau 313236764b1SSepherosa Ziehau #undef HC_RETRY_MAX 314236764b1SSepherosa Ziehau 315236764b1SSepherosa Ziehau return EIO; 316236764b1SSepherosa Ziehau } 317236764b1SSepherosa Ziehau 318236764b1SSepherosa Ziehau int 319236764b1SSepherosa Ziehau vmbus_msghc_exec(struct vmbus_softc *sc, struct vmbus_msghc *mh) 320236764b1SSepherosa Ziehau { 321236764b1SSepherosa Ziehau struct vmbus_msghc_ctx *mhc = sc->vmbus_msg_hc; 322236764b1SSepherosa Ziehau int error; 323236764b1SSepherosa Ziehau 324236764b1SSepherosa Ziehau KASSERT(mh->mh_resp == NULL, ("hypercall msg has pending response")); 325236764b1SSepherosa Ziehau 326236764b1SSepherosa Ziehau mtx_lock(&mhc->mhc_active_lock); 327236764b1SSepherosa Ziehau KASSERT(mhc->mhc_active == NULL, ("pending active msg hypercall")); 328236764b1SSepherosa Ziehau mhc->mhc_active = mh; 329236764b1SSepherosa Ziehau mtx_unlock(&mhc->mhc_active_lock); 330236764b1SSepherosa Ziehau 331236764b1SSepherosa Ziehau error = vmbus_msghc_exec_noresult(mh); 332236764b1SSepherosa Ziehau if (error) { 333236764b1SSepherosa Ziehau mtx_lock(&mhc->mhc_active_lock); 334236764b1SSepherosa Ziehau KASSERT(mhc->mhc_active == mh, ("msghc mismatch")); 335236764b1SSepherosa Ziehau mhc->mhc_active = NULL; 336236764b1SSepherosa Ziehau mtx_unlock(&mhc->mhc_active_lock); 337236764b1SSepherosa Ziehau } 338236764b1SSepherosa Ziehau return error; 339236764b1SSepherosa Ziehau } 340236764b1SSepherosa Ziehau 341236764b1SSepherosa Ziehau const struct vmbus_message * 342236764b1SSepherosa Ziehau vmbus_msghc_wait_result(struct vmbus_softc *sc, struct vmbus_msghc *mh) 343236764b1SSepherosa Ziehau { 344236764b1SSepherosa Ziehau struct vmbus_msghc_ctx *mhc = sc->vmbus_msg_hc; 345236764b1SSepherosa Ziehau 346236764b1SSepherosa Ziehau mtx_lock(&mhc->mhc_active_lock); 347236764b1SSepherosa Ziehau 348236764b1SSepherosa Ziehau KASSERT(mhc->mhc_active == mh, ("msghc mismatch")); 349236764b1SSepherosa Ziehau while (mh->mh_resp == NULL) { 350236764b1SSepherosa Ziehau mtx_sleep(&mhc->mhc_active, &mhc->mhc_active_lock, 0, 351236764b1SSepherosa Ziehau "wmsghc", 0); 352236764b1SSepherosa Ziehau } 353236764b1SSepherosa Ziehau mhc->mhc_active = NULL; 354236764b1SSepherosa Ziehau 355236764b1SSepherosa Ziehau mtx_unlock(&mhc->mhc_active_lock); 356236764b1SSepherosa Ziehau 357236764b1SSepherosa Ziehau return mh->mh_resp; 358236764b1SSepherosa Ziehau } 359236764b1SSepherosa Ziehau 360236764b1SSepherosa Ziehau void 361236764b1SSepherosa Ziehau vmbus_msghc_wakeup(struct vmbus_softc *sc, const struct vmbus_message *msg) 362236764b1SSepherosa Ziehau { 363236764b1SSepherosa Ziehau struct vmbus_msghc_ctx *mhc = sc->vmbus_msg_hc; 364236764b1SSepherosa Ziehau struct vmbus_msghc *mh; 365236764b1SSepherosa Ziehau 366236764b1SSepherosa Ziehau mtx_lock(&mhc->mhc_active_lock); 367236764b1SSepherosa Ziehau 368236764b1SSepherosa Ziehau mh = mhc->mhc_active; 369236764b1SSepherosa Ziehau KASSERT(mh != NULL, ("no pending msg hypercall")); 370236764b1SSepherosa Ziehau memcpy(&mh->mh_resp0, msg, sizeof(mh->mh_resp0)); 371236764b1SSepherosa Ziehau mh->mh_resp = &mh->mh_resp0; 372236764b1SSepherosa Ziehau 373236764b1SSepherosa Ziehau mtx_unlock(&mhc->mhc_active_lock); 374236764b1SSepherosa Ziehau wakeup(&mhc->mhc_active); 375236764b1SSepherosa Ziehau } 376236764b1SSepherosa Ziehau 377ee7e313fSSepherosa Ziehau uint32_t 378ee7e313fSSepherosa Ziehau vmbus_gpadl_alloc(struct vmbus_softc *sc) 379ee7e313fSSepherosa Ziehau { 380ee7e313fSSepherosa Ziehau return atomic_fetchadd_int(&sc->vmbus_gpadl, 1); 381ee7e313fSSepherosa Ziehau } 382ee7e313fSSepherosa Ziehau 383236764b1SSepherosa Ziehau static int 384f24517f0SSepherosa Ziehau vmbus_connect(struct vmbus_softc *sc, uint32_t version) 385236764b1SSepherosa Ziehau { 386f24517f0SSepherosa Ziehau struct vmbus_chanmsg_connect *req; 387236764b1SSepherosa Ziehau const struct vmbus_message *msg; 388236764b1SSepherosa Ziehau struct vmbus_msghc *mh; 389f24517f0SSepherosa Ziehau int error, done = 0; 390236764b1SSepherosa Ziehau 391236764b1SSepherosa Ziehau mh = vmbus_msghc_get(sc, sizeof(*req)); 392236764b1SSepherosa Ziehau if (mh == NULL) 393236764b1SSepherosa Ziehau return ENXIO; 394236764b1SSepherosa Ziehau 395236764b1SSepherosa Ziehau req = vmbus_msghc_dataptr(mh); 396f24517f0SSepherosa Ziehau req->chm_hdr.chm_type = VMBUS_CHANMSG_TYPE_CONNECT; 397236764b1SSepherosa Ziehau req->chm_ver = version; 398236764b1SSepherosa Ziehau req->chm_evtflags = sc->vmbus_evtflags_dma.hv_paddr; 399236764b1SSepherosa Ziehau req->chm_mnf1 = sc->vmbus_mnf1_dma.hv_paddr; 400236764b1SSepherosa Ziehau req->chm_mnf2 = sc->vmbus_mnf2_dma.hv_paddr; 401236764b1SSepherosa Ziehau 402236764b1SSepherosa Ziehau error = vmbus_msghc_exec(sc, mh); 403236764b1SSepherosa Ziehau if (error) { 404236764b1SSepherosa Ziehau vmbus_msghc_put(sc, mh); 405236764b1SSepherosa Ziehau return error; 406236764b1SSepherosa Ziehau } 407236764b1SSepherosa Ziehau 408236764b1SSepherosa Ziehau msg = vmbus_msghc_wait_result(sc, mh); 409f24517f0SSepherosa Ziehau done = ((const struct vmbus_chanmsg_connect_resp *) 410f24517f0SSepherosa Ziehau msg->msg_data)->chm_done; 411236764b1SSepherosa Ziehau 412236764b1SSepherosa Ziehau vmbus_msghc_put(sc, mh); 413236764b1SSepherosa Ziehau 414f24517f0SSepherosa Ziehau return (done ? 0 : EOPNOTSUPP); 415236764b1SSepherosa Ziehau } 416236764b1SSepherosa Ziehau 417236764b1SSepherosa Ziehau static int 418236764b1SSepherosa Ziehau vmbus_init(struct vmbus_softc *sc) 419236764b1SSepherosa Ziehau { 420236764b1SSepherosa Ziehau int i; 421236764b1SSepherosa Ziehau 422236764b1SSepherosa Ziehau for (i = 0; i < nitems(vmbus_version); ++i) { 423236764b1SSepherosa Ziehau int error; 424236764b1SSepherosa Ziehau 425f24517f0SSepherosa Ziehau error = vmbus_connect(sc, vmbus_version[i]); 426236764b1SSepherosa Ziehau if (!error) { 42738d19df6SSepherosa Ziehau sc->vmbus_version = vmbus_version[i]; 428236764b1SSepherosa Ziehau device_printf(sc->vmbus_dev, "version %u.%u\n", 42938d19df6SSepherosa Ziehau VMBUS_VERSION_MAJOR(sc->vmbus_version), 43038d19df6SSepherosa Ziehau VMBUS_VERSION_MINOR(sc->vmbus_version)); 431236764b1SSepherosa Ziehau return 0; 432236764b1SSepherosa Ziehau } 433236764b1SSepherosa Ziehau } 434236764b1SSepherosa Ziehau return ENXIO; 435236764b1SSepherosa Ziehau } 436236764b1SSepherosa Ziehau 4371ecb2466SSepherosa Ziehau static void 438f24517f0SSepherosa Ziehau vmbus_disconnect(struct vmbus_softc *sc) 4391ecb2466SSepherosa Ziehau { 440f24517f0SSepherosa Ziehau struct vmbus_chanmsg_disconnect *req; 4411ecb2466SSepherosa Ziehau struct vmbus_msghc *mh; 4421ecb2466SSepherosa Ziehau int error; 4431ecb2466SSepherosa Ziehau 4441ecb2466SSepherosa Ziehau mh = vmbus_msghc_get(sc, sizeof(*req)); 4451ecb2466SSepherosa Ziehau if (mh == NULL) { 4461ecb2466SSepherosa Ziehau device_printf(sc->vmbus_dev, 447f24517f0SSepherosa Ziehau "can not get msg hypercall for disconnect\n"); 4481ecb2466SSepherosa Ziehau return; 4491ecb2466SSepherosa Ziehau } 4501ecb2466SSepherosa Ziehau 4511ecb2466SSepherosa Ziehau req = vmbus_msghc_dataptr(mh); 452f24517f0SSepherosa Ziehau req->chm_hdr.chm_type = VMBUS_CHANMSG_TYPE_DISCONNECT; 4531ecb2466SSepherosa Ziehau 4541ecb2466SSepherosa Ziehau error = vmbus_msghc_exec_noresult(mh); 4551ecb2466SSepherosa Ziehau vmbus_msghc_put(sc, mh); 4561ecb2466SSepherosa Ziehau 4571ecb2466SSepherosa Ziehau if (error) { 4581ecb2466SSepherosa Ziehau device_printf(sc->vmbus_dev, 459f24517f0SSepherosa Ziehau "disconnect msg hypercall failed\n"); 4601ecb2466SSepherosa Ziehau } 4611ecb2466SSepherosa Ziehau } 4621ecb2466SSepherosa Ziehau 463c1cc5bdfSSepherosa Ziehau static int 464c1cc5bdfSSepherosa Ziehau vmbus_req_channels(struct vmbus_softc *sc) 465c1cc5bdfSSepherosa Ziehau { 466f24517f0SSepherosa Ziehau struct vmbus_chanmsg_chrequest *req; 467c1cc5bdfSSepherosa Ziehau struct vmbus_msghc *mh; 468c1cc5bdfSSepherosa Ziehau int error; 469c1cc5bdfSSepherosa Ziehau 470c1cc5bdfSSepherosa Ziehau mh = vmbus_msghc_get(sc, sizeof(*req)); 471c1cc5bdfSSepherosa Ziehau if (mh == NULL) 472c1cc5bdfSSepherosa Ziehau return ENXIO; 473c1cc5bdfSSepherosa Ziehau 474c1cc5bdfSSepherosa Ziehau req = vmbus_msghc_dataptr(mh); 475f24517f0SSepherosa Ziehau req->chm_hdr.chm_type = VMBUS_CHANMSG_TYPE_CHREQUEST; 476c1cc5bdfSSepherosa Ziehau 477c1cc5bdfSSepherosa Ziehau error = vmbus_msghc_exec_noresult(mh); 478c1cc5bdfSSepherosa Ziehau vmbus_msghc_put(sc, mh); 479c1cc5bdfSSepherosa Ziehau 480c1cc5bdfSSepherosa Ziehau return error; 481c1cc5bdfSSepherosa Ziehau } 482c1cc5bdfSSepherosa Ziehau 483796a90bfSSepherosa Ziehau void 484796a90bfSSepherosa Ziehau vmbus_scan_newchan(struct vmbus_softc *sc) 485796a90bfSSepherosa Ziehau { 486796a90bfSSepherosa Ziehau mtx_lock(&sc->vmbus_scan_lock); 487796a90bfSSepherosa Ziehau if ((sc->vmbus_scan_chcnt & VMBUS_SCAN_CHCNT_DONE) == 0) 488796a90bfSSepherosa Ziehau sc->vmbus_scan_chcnt++; 489796a90bfSSepherosa Ziehau mtx_unlock(&sc->vmbus_scan_lock); 490796a90bfSSepherosa Ziehau } 491796a90bfSSepherosa Ziehau 492796a90bfSSepherosa Ziehau void 493796a90bfSSepherosa Ziehau vmbus_scan_done(struct vmbus_softc *sc) 494796a90bfSSepherosa Ziehau { 495796a90bfSSepherosa Ziehau mtx_lock(&sc->vmbus_scan_lock); 496796a90bfSSepherosa Ziehau sc->vmbus_scan_chcnt |= VMBUS_SCAN_CHCNT_DONE; 497796a90bfSSepherosa Ziehau mtx_unlock(&sc->vmbus_scan_lock); 498796a90bfSSepherosa Ziehau wakeup(&sc->vmbus_scan_chcnt); 499796a90bfSSepherosa Ziehau } 500796a90bfSSepherosa Ziehau 501796a90bfSSepherosa Ziehau static void 502796a90bfSSepherosa Ziehau vmbus_scan_newdev(struct vmbus_softc *sc) 503796a90bfSSepherosa Ziehau { 504796a90bfSSepherosa Ziehau mtx_lock(&sc->vmbus_scan_lock); 505796a90bfSSepherosa Ziehau sc->vmbus_scan_devcnt++; 506796a90bfSSepherosa Ziehau mtx_unlock(&sc->vmbus_scan_lock); 507796a90bfSSepherosa Ziehau wakeup(&sc->vmbus_scan_devcnt); 508796a90bfSSepherosa Ziehau } 509796a90bfSSepherosa Ziehau 510796a90bfSSepherosa Ziehau static void 511796a90bfSSepherosa Ziehau vmbus_scan_wait(struct vmbus_softc *sc) 512796a90bfSSepherosa Ziehau { 513796a90bfSSepherosa Ziehau uint32_t chancnt; 514796a90bfSSepherosa Ziehau 515796a90bfSSepherosa Ziehau mtx_lock(&sc->vmbus_scan_lock); 516796a90bfSSepherosa Ziehau while ((sc->vmbus_scan_chcnt & VMBUS_SCAN_CHCNT_DONE) == 0) { 517796a90bfSSepherosa Ziehau mtx_sleep(&sc->vmbus_scan_chcnt, &sc->vmbus_scan_lock, 0, 518796a90bfSSepherosa Ziehau "waitch", 0); 519796a90bfSSepherosa Ziehau } 520796a90bfSSepherosa Ziehau chancnt = sc->vmbus_scan_chcnt & ~VMBUS_SCAN_CHCNT_DONE; 521796a90bfSSepherosa Ziehau 522796a90bfSSepherosa Ziehau while (sc->vmbus_scan_devcnt != chancnt) { 523796a90bfSSepherosa Ziehau mtx_sleep(&sc->vmbus_scan_devcnt, &sc->vmbus_scan_lock, 0, 524796a90bfSSepherosa Ziehau "waitdev", 0); 525796a90bfSSepherosa Ziehau } 526796a90bfSSepherosa Ziehau mtx_unlock(&sc->vmbus_scan_lock); 527796a90bfSSepherosa Ziehau } 528796a90bfSSepherosa Ziehau 529796a90bfSSepherosa Ziehau static int 530796a90bfSSepherosa Ziehau vmbus_scan(struct vmbus_softc *sc) 531796a90bfSSepherosa Ziehau { 532796a90bfSSepherosa Ziehau int error; 533796a90bfSSepherosa Ziehau 534796a90bfSSepherosa Ziehau /* 535796a90bfSSepherosa Ziehau * Start vmbus scanning. 536796a90bfSSepherosa Ziehau */ 537796a90bfSSepherosa Ziehau error = vmbus_req_channels(sc); 538796a90bfSSepherosa Ziehau if (error) { 539796a90bfSSepherosa Ziehau device_printf(sc->vmbus_dev, "channel request failed: %d\n", 540796a90bfSSepherosa Ziehau error); 541796a90bfSSepherosa Ziehau return error; 542796a90bfSSepherosa Ziehau } 543796a90bfSSepherosa Ziehau 544796a90bfSSepherosa Ziehau /* 545796a90bfSSepherosa Ziehau * Wait for all devices are added to vmbus. 546796a90bfSSepherosa Ziehau */ 547796a90bfSSepherosa Ziehau vmbus_scan_wait(sc); 548796a90bfSSepherosa Ziehau 549796a90bfSSepherosa Ziehau /* 550796a90bfSSepherosa Ziehau * Identify, probe and attach. 551796a90bfSSepherosa Ziehau */ 552796a90bfSSepherosa Ziehau bus_generic_probe(sc->vmbus_dev); 553796a90bfSSepherosa Ziehau bus_generic_attach(sc->vmbus_dev); 554796a90bfSSepherosa Ziehau 555796a90bfSSepherosa Ziehau if (bootverbose) { 556796a90bfSSepherosa Ziehau device_printf(sc->vmbus_dev, "device scan, probe and attach " 557796a90bfSSepherosa Ziehau "done\n"); 558796a90bfSSepherosa Ziehau } 559796a90bfSSepherosa Ziehau return 0; 560796a90bfSSepherosa Ziehau } 561796a90bfSSepherosa Ziehau 562b7bb4816SSepherosa Ziehau static void 563b7bb4816SSepherosa Ziehau vmbus_msg_task(void *xsc, int pending __unused) 564b7bb4816SSepherosa Ziehau { 565b7bb4816SSepherosa Ziehau struct vmbus_softc *sc = xsc; 566b7bb4816SSepherosa Ziehau volatile struct vmbus_message *msg; 567b7bb4816SSepherosa Ziehau 568b7bb4816SSepherosa Ziehau msg = VMBUS_PCPU_GET(sc, message, curcpu) + VMBUS_SINT_MESSAGE; 569b7bb4816SSepherosa Ziehau for (;;) { 570236764b1SSepherosa Ziehau if (msg->msg_type == HYPERV_MSGTYPE_NONE) { 571fa4828b0SSepherosa Ziehau /* No message */ 572fa4828b0SSepherosa Ziehau break; 573236764b1SSepherosa Ziehau } else if (msg->msg_type == HYPERV_MSGTYPE_CHANNEL) { 57412ea25aeSSepherosa Ziehau /* Channel message */ 57543926ba1SSepherosa Ziehau vmbus_chan_msgproc(sc, 57643926ba1SSepherosa Ziehau __DEVOLATILE(const struct vmbus_message *, msg)); 577fa4828b0SSepherosa Ziehau } 578b7bb4816SSepherosa Ziehau 579236764b1SSepherosa Ziehau msg->msg_type = HYPERV_MSGTYPE_NONE; 580b7bb4816SSepherosa Ziehau /* 581b7bb4816SSepherosa Ziehau * Make sure the write to msg_type (i.e. set to 582236764b1SSepherosa Ziehau * HYPERV_MSGTYPE_NONE) happens before we read the 583b7bb4816SSepherosa Ziehau * msg_flags and EOMing. Otherwise, the EOMing will 584b7bb4816SSepherosa Ziehau * not deliver any more messages since there is no 585b7bb4816SSepherosa Ziehau * empty slot 586b7bb4816SSepherosa Ziehau * 587b7bb4816SSepherosa Ziehau * NOTE: 588b7bb4816SSepherosa Ziehau * mb() is used here, since atomic_thread_fence_seq_cst() 589b7bb4816SSepherosa Ziehau * will become compiler fence on UP kernel. 590b7bb4816SSepherosa Ziehau */ 591b7bb4816SSepherosa Ziehau mb(); 592b7bb4816SSepherosa Ziehau if (msg->msg_flags & VMBUS_MSGFLAG_PENDING) { 593b7bb4816SSepherosa Ziehau /* 594b7bb4816SSepherosa Ziehau * This will cause message queue rescan to possibly 595b7bb4816SSepherosa Ziehau * deliver another msg from the hypervisor 596b7bb4816SSepherosa Ziehau */ 597b7bb4816SSepherosa Ziehau wrmsr(MSR_HV_EOM, 0); 598b7bb4816SSepherosa Ziehau } 599b7bb4816SSepherosa Ziehau } 600b7bb4816SSepherosa Ziehau } 601b7bb4816SSepherosa Ziehau 602b7bb4816SSepherosa Ziehau static __inline int 603b7bb4816SSepherosa Ziehau vmbus_handle_intr1(struct vmbus_softc *sc, struct trapframe *frame, int cpu) 604b7bb4816SSepherosa Ziehau { 605b7bb4816SSepherosa Ziehau volatile struct vmbus_message *msg; 606b7bb4816SSepherosa Ziehau struct vmbus_message *msg_base; 607b7bb4816SSepherosa Ziehau 608b7bb4816SSepherosa Ziehau msg_base = VMBUS_PCPU_GET(sc, message, cpu); 609b7bb4816SSepherosa Ziehau 610b7bb4816SSepherosa Ziehau /* 611b7bb4816SSepherosa Ziehau * Check event timer. 612b7bb4816SSepherosa Ziehau * 613b7bb4816SSepherosa Ziehau * TODO: move this to independent IDT vector. 614b7bb4816SSepherosa Ziehau */ 615b7bb4816SSepherosa Ziehau msg = msg_base + VMBUS_SINT_TIMER; 616236764b1SSepherosa Ziehau if (msg->msg_type == HYPERV_MSGTYPE_TIMER_EXPIRED) { 617236764b1SSepherosa Ziehau msg->msg_type = HYPERV_MSGTYPE_NONE; 618b7bb4816SSepherosa Ziehau 619b7bb4816SSepherosa Ziehau vmbus_et_intr(frame); 620b7bb4816SSepherosa Ziehau 621b7bb4816SSepherosa Ziehau /* 622b7bb4816SSepherosa Ziehau * Make sure the write to msg_type (i.e. set to 623236764b1SSepherosa Ziehau * HYPERV_MSGTYPE_NONE) happens before we read the 624b7bb4816SSepherosa Ziehau * msg_flags and EOMing. Otherwise, the EOMing will 625b7bb4816SSepherosa Ziehau * not deliver any more messages since there is no 626b7bb4816SSepherosa Ziehau * empty slot 627b7bb4816SSepherosa Ziehau * 628b7bb4816SSepherosa Ziehau * NOTE: 629b7bb4816SSepherosa Ziehau * mb() is used here, since atomic_thread_fence_seq_cst() 630b7bb4816SSepherosa Ziehau * will become compiler fence on UP kernel. 631b7bb4816SSepherosa Ziehau */ 632b7bb4816SSepherosa Ziehau mb(); 633b7bb4816SSepherosa Ziehau if (msg->msg_flags & VMBUS_MSGFLAG_PENDING) { 634b7bb4816SSepherosa Ziehau /* 635b7bb4816SSepherosa Ziehau * This will cause message queue rescan to possibly 636b7bb4816SSepherosa Ziehau * deliver another msg from the hypervisor 637b7bb4816SSepherosa Ziehau */ 638b7bb4816SSepherosa Ziehau wrmsr(MSR_HV_EOM, 0); 639b7bb4816SSepherosa Ziehau } 640b7bb4816SSepherosa Ziehau } 641b7bb4816SSepherosa Ziehau 642b7bb4816SSepherosa Ziehau /* 643b7bb4816SSepherosa Ziehau * Check events. Hot path for network and storage I/O data; high rate. 644b7bb4816SSepherosa Ziehau * 645b7bb4816SSepherosa Ziehau * NOTE: 646b7bb4816SSepherosa Ziehau * As recommended by the Windows guest fellows, we check events before 647b7bb4816SSepherosa Ziehau * checking messages. 648b7bb4816SSepherosa Ziehau */ 649b7bb4816SSepherosa Ziehau sc->vmbus_event_proc(sc, cpu); 650b7bb4816SSepherosa Ziehau 651b7bb4816SSepherosa Ziehau /* 652b7bb4816SSepherosa Ziehau * Check messages. Mainly management stuffs; ultra low rate. 653b7bb4816SSepherosa Ziehau */ 654b7bb4816SSepherosa Ziehau msg = msg_base + VMBUS_SINT_MESSAGE; 655236764b1SSepherosa Ziehau if (__predict_false(msg->msg_type != HYPERV_MSGTYPE_NONE)) { 656b7bb4816SSepherosa Ziehau taskqueue_enqueue(VMBUS_PCPU_GET(sc, message_tq, cpu), 657b7bb4816SSepherosa Ziehau VMBUS_PCPU_PTR(sc, message_task, cpu)); 658b7bb4816SSepherosa Ziehau } 659b7bb4816SSepherosa Ziehau 660b7bb4816SSepherosa Ziehau return (FILTER_HANDLED); 661b7bb4816SSepherosa Ziehau } 662b7bb4816SSepherosa Ziehau 663b7bb4816SSepherosa Ziehau void 664b7bb4816SSepherosa Ziehau vmbus_handle_intr(struct trapframe *trap_frame) 665b7bb4816SSepherosa Ziehau { 666b7bb4816SSepherosa Ziehau struct vmbus_softc *sc = vmbus_get_softc(); 667b7bb4816SSepherosa Ziehau int cpu = curcpu; 668b7bb4816SSepherosa Ziehau 669b7bb4816SSepherosa Ziehau /* 670b7bb4816SSepherosa Ziehau * Disable preemption. 671b7bb4816SSepherosa Ziehau */ 672b7bb4816SSepherosa Ziehau critical_enter(); 673b7bb4816SSepherosa Ziehau 674b7bb4816SSepherosa Ziehau /* 675b7bb4816SSepherosa Ziehau * Do a little interrupt counting. 676b7bb4816SSepherosa Ziehau */ 677b7bb4816SSepherosa Ziehau (*VMBUS_PCPU_GET(sc, intr_cnt, cpu))++; 678b7bb4816SSepherosa Ziehau 679b7bb4816SSepherosa Ziehau vmbus_handle_intr1(sc, trap_frame, cpu); 680b7bb4816SSepherosa Ziehau 681b7bb4816SSepherosa Ziehau /* 682b7bb4816SSepherosa Ziehau * Enable preemption. 683b7bb4816SSepherosa Ziehau */ 684b7bb4816SSepherosa Ziehau critical_exit(); 685b7bb4816SSepherosa Ziehau } 686b7bb4816SSepherosa Ziehau 687b7bb4816SSepherosa Ziehau static void 688b7bb4816SSepherosa Ziehau vmbus_synic_setup(void *xsc) 689b7bb4816SSepherosa Ziehau { 690b7bb4816SSepherosa Ziehau struct vmbus_softc *sc = xsc; 691b7bb4816SSepherosa Ziehau int cpu = curcpu; 692b7bb4816SSepherosa Ziehau uint64_t val, orig; 693b7bb4816SSepherosa Ziehau uint32_t sint; 694b7bb4816SSepherosa Ziehau 695b7bb4816SSepherosa Ziehau if (hyperv_features & CPUID_HV_MSR_VP_INDEX) { 696b7bb4816SSepherosa Ziehau /* 697b7bb4816SSepherosa Ziehau * Save virtual processor id. 698b7bb4816SSepherosa Ziehau */ 699b7bb4816SSepherosa Ziehau VMBUS_PCPU_GET(sc, vcpuid, cpu) = rdmsr(MSR_HV_VP_INDEX); 700b7bb4816SSepherosa Ziehau } else { 701b7bb4816SSepherosa Ziehau /* 702b7bb4816SSepherosa Ziehau * XXX 703b7bb4816SSepherosa Ziehau * Virtual processoor id is only used by a pretty broken 704b7bb4816SSepherosa Ziehau * channel selection code from storvsc. It's nothing 705b7bb4816SSepherosa Ziehau * critical even if CPUID_HV_MSR_VP_INDEX is not set; keep 706b7bb4816SSepherosa Ziehau * moving on. 707b7bb4816SSepherosa Ziehau */ 708b7bb4816SSepherosa Ziehau VMBUS_PCPU_GET(sc, vcpuid, cpu) = cpu; 709b7bb4816SSepherosa Ziehau } 710b7bb4816SSepherosa Ziehau 711b7bb4816SSepherosa Ziehau /* 712b7bb4816SSepherosa Ziehau * Setup the SynIC message. 713b7bb4816SSepherosa Ziehau */ 714b7bb4816SSepherosa Ziehau orig = rdmsr(MSR_HV_SIMP); 715b7bb4816SSepherosa Ziehau val = MSR_HV_SIMP_ENABLE | (orig & MSR_HV_SIMP_RSVD_MASK) | 716b7bb4816SSepherosa Ziehau ((VMBUS_PCPU_GET(sc, message_dma.hv_paddr, cpu) >> PAGE_SHIFT) << 717b7bb4816SSepherosa Ziehau MSR_HV_SIMP_PGSHIFT); 718b7bb4816SSepherosa Ziehau wrmsr(MSR_HV_SIMP, val); 719b7bb4816SSepherosa Ziehau 720b7bb4816SSepherosa Ziehau /* 721b7bb4816SSepherosa Ziehau * Setup the SynIC event flags. 722b7bb4816SSepherosa Ziehau */ 723b7bb4816SSepherosa Ziehau orig = rdmsr(MSR_HV_SIEFP); 724b7bb4816SSepherosa Ziehau val = MSR_HV_SIEFP_ENABLE | (orig & MSR_HV_SIEFP_RSVD_MASK) | 725b7bb4816SSepherosa Ziehau ((VMBUS_PCPU_GET(sc, event_flags_dma.hv_paddr, cpu) 726b7bb4816SSepherosa Ziehau >> PAGE_SHIFT) << MSR_HV_SIEFP_PGSHIFT); 727b7bb4816SSepherosa Ziehau wrmsr(MSR_HV_SIEFP, val); 728b7bb4816SSepherosa Ziehau 729b7bb4816SSepherosa Ziehau 730b7bb4816SSepherosa Ziehau /* 731b7bb4816SSepherosa Ziehau * Configure and unmask SINT for message and event flags. 732b7bb4816SSepherosa Ziehau */ 733b7bb4816SSepherosa Ziehau sint = MSR_HV_SINT0 + VMBUS_SINT_MESSAGE; 734b7bb4816SSepherosa Ziehau orig = rdmsr(sint); 735b7bb4816SSepherosa Ziehau val = sc->vmbus_idtvec | MSR_HV_SINT_AUTOEOI | 736b7bb4816SSepherosa Ziehau (orig & MSR_HV_SINT_RSVD_MASK); 737b7bb4816SSepherosa Ziehau wrmsr(sint, val); 738b7bb4816SSepherosa Ziehau 739b7bb4816SSepherosa Ziehau /* 740b7bb4816SSepherosa Ziehau * Configure and unmask SINT for timer. 741b7bb4816SSepherosa Ziehau */ 742b7bb4816SSepherosa Ziehau sint = MSR_HV_SINT0 + VMBUS_SINT_TIMER; 743b7bb4816SSepherosa Ziehau orig = rdmsr(sint); 744b7bb4816SSepherosa Ziehau val = sc->vmbus_idtvec | MSR_HV_SINT_AUTOEOI | 745b7bb4816SSepherosa Ziehau (orig & MSR_HV_SINT_RSVD_MASK); 746b7bb4816SSepherosa Ziehau wrmsr(sint, val); 747b7bb4816SSepherosa Ziehau 748b7bb4816SSepherosa Ziehau /* 749b7bb4816SSepherosa Ziehau * All done; enable SynIC. 750b7bb4816SSepherosa Ziehau */ 751b7bb4816SSepherosa Ziehau orig = rdmsr(MSR_HV_SCONTROL); 752b7bb4816SSepherosa Ziehau val = MSR_HV_SCTRL_ENABLE | (orig & MSR_HV_SCTRL_RSVD_MASK); 753b7bb4816SSepherosa Ziehau wrmsr(MSR_HV_SCONTROL, val); 754b7bb4816SSepherosa Ziehau } 755b7bb4816SSepherosa Ziehau 756b7bb4816SSepherosa Ziehau static void 757b7bb4816SSepherosa Ziehau vmbus_synic_teardown(void *arg) 758b7bb4816SSepherosa Ziehau { 759b7bb4816SSepherosa Ziehau uint64_t orig; 760b7bb4816SSepherosa Ziehau uint32_t sint; 761b7bb4816SSepherosa Ziehau 762b7bb4816SSepherosa Ziehau /* 763b7bb4816SSepherosa Ziehau * Disable SynIC. 764b7bb4816SSepherosa Ziehau */ 765b7bb4816SSepherosa Ziehau orig = rdmsr(MSR_HV_SCONTROL); 766b7bb4816SSepherosa Ziehau wrmsr(MSR_HV_SCONTROL, (orig & MSR_HV_SCTRL_RSVD_MASK)); 767b7bb4816SSepherosa Ziehau 768b7bb4816SSepherosa Ziehau /* 769b7bb4816SSepherosa Ziehau * Mask message and event flags SINT. 770b7bb4816SSepherosa Ziehau */ 771b7bb4816SSepherosa Ziehau sint = MSR_HV_SINT0 + VMBUS_SINT_MESSAGE; 772b7bb4816SSepherosa Ziehau orig = rdmsr(sint); 773b7bb4816SSepherosa Ziehau wrmsr(sint, orig | MSR_HV_SINT_MASKED); 774b7bb4816SSepherosa Ziehau 775b7bb4816SSepherosa Ziehau /* 776b7bb4816SSepherosa Ziehau * Mask timer SINT. 777b7bb4816SSepherosa Ziehau */ 778b7bb4816SSepherosa Ziehau sint = MSR_HV_SINT0 + VMBUS_SINT_TIMER; 779b7bb4816SSepherosa Ziehau orig = rdmsr(sint); 780b7bb4816SSepherosa Ziehau wrmsr(sint, orig | MSR_HV_SINT_MASKED); 781b7bb4816SSepherosa Ziehau 782b7bb4816SSepherosa Ziehau /* 783b7bb4816SSepherosa Ziehau * Teardown SynIC message. 784b7bb4816SSepherosa Ziehau */ 785b7bb4816SSepherosa Ziehau orig = rdmsr(MSR_HV_SIMP); 786b7bb4816SSepherosa Ziehau wrmsr(MSR_HV_SIMP, (orig & MSR_HV_SIMP_RSVD_MASK)); 787b7bb4816SSepherosa Ziehau 788b7bb4816SSepherosa Ziehau /* 789b7bb4816SSepherosa Ziehau * Teardown SynIC event flags. 790b7bb4816SSepherosa Ziehau */ 791b7bb4816SSepherosa Ziehau orig = rdmsr(MSR_HV_SIEFP); 792b7bb4816SSepherosa Ziehau wrmsr(MSR_HV_SIEFP, (orig & MSR_HV_SIEFP_RSVD_MASK)); 793b7bb4816SSepherosa Ziehau } 794b7bb4816SSepherosa Ziehau 795b7bb4816SSepherosa Ziehau static int 796b7bb4816SSepherosa Ziehau vmbus_dma_alloc(struct vmbus_softc *sc) 797b7bb4816SSepherosa Ziehau { 7986523ab7eSSepherosa Ziehau bus_dma_tag_t parent_dtag; 7996523ab7eSSepherosa Ziehau uint8_t *evtflags; 800b7bb4816SSepherosa Ziehau int cpu; 801b7bb4816SSepherosa Ziehau 8026523ab7eSSepherosa Ziehau parent_dtag = bus_get_dma_tag(sc->vmbus_dev); 803b7bb4816SSepherosa Ziehau CPU_FOREACH(cpu) { 804b7bb4816SSepherosa Ziehau void *ptr; 805b7bb4816SSepherosa Ziehau 806b7bb4816SSepherosa Ziehau /* 807b7bb4816SSepherosa Ziehau * Per-cpu messages and event flags. 808b7bb4816SSepherosa Ziehau */ 8096523ab7eSSepherosa Ziehau ptr = hyperv_dmamem_alloc(parent_dtag, PAGE_SIZE, 0, 8106523ab7eSSepherosa Ziehau PAGE_SIZE, VMBUS_PCPU_PTR(sc, message_dma, cpu), 811b7bb4816SSepherosa Ziehau BUS_DMA_WAITOK | BUS_DMA_ZERO); 812b7bb4816SSepherosa Ziehau if (ptr == NULL) 813b7bb4816SSepherosa Ziehau return ENOMEM; 814b7bb4816SSepherosa Ziehau VMBUS_PCPU_GET(sc, message, cpu) = ptr; 815b7bb4816SSepherosa Ziehau 8166523ab7eSSepherosa Ziehau ptr = hyperv_dmamem_alloc(parent_dtag, PAGE_SIZE, 0, 8176523ab7eSSepherosa Ziehau PAGE_SIZE, VMBUS_PCPU_PTR(sc, event_flags_dma, cpu), 818b7bb4816SSepherosa Ziehau BUS_DMA_WAITOK | BUS_DMA_ZERO); 819b7bb4816SSepherosa Ziehau if (ptr == NULL) 820b7bb4816SSepherosa Ziehau return ENOMEM; 821b7bb4816SSepherosa Ziehau VMBUS_PCPU_GET(sc, event_flags, cpu) = ptr; 822b7bb4816SSepherosa Ziehau } 8236523ab7eSSepherosa Ziehau 8246523ab7eSSepherosa Ziehau evtflags = hyperv_dmamem_alloc(parent_dtag, PAGE_SIZE, 0, 8256523ab7eSSepherosa Ziehau PAGE_SIZE, &sc->vmbus_evtflags_dma, BUS_DMA_WAITOK | BUS_DMA_ZERO); 8266523ab7eSSepherosa Ziehau if (evtflags == NULL) 8276523ab7eSSepherosa Ziehau return ENOMEM; 8286523ab7eSSepherosa Ziehau sc->vmbus_rx_evtflags = (u_long *)evtflags; 82951a9a000SSepherosa Ziehau sc->vmbus_tx_evtflags = (u_long *)(evtflags + (PAGE_SIZE / 2)); 8306523ab7eSSepherosa Ziehau sc->vmbus_evtflags = evtflags; 8316523ab7eSSepherosa Ziehau 8326523ab7eSSepherosa Ziehau sc->vmbus_mnf1 = hyperv_dmamem_alloc(parent_dtag, PAGE_SIZE, 0, 8336523ab7eSSepherosa Ziehau PAGE_SIZE, &sc->vmbus_mnf1_dma, BUS_DMA_WAITOK | BUS_DMA_ZERO); 8346523ab7eSSepherosa Ziehau if (sc->vmbus_mnf1 == NULL) 8356523ab7eSSepherosa Ziehau return ENOMEM; 8366523ab7eSSepherosa Ziehau 8376523ab7eSSepherosa Ziehau sc->vmbus_mnf2 = hyperv_dmamem_alloc(parent_dtag, PAGE_SIZE, 0, 8388c8cf3f2SSepherosa Ziehau sizeof(struct vmbus_mnf), &sc->vmbus_mnf2_dma, 8398c8cf3f2SSepherosa Ziehau BUS_DMA_WAITOK | BUS_DMA_ZERO); 8406523ab7eSSepherosa Ziehau if (sc->vmbus_mnf2 == NULL) 8416523ab7eSSepherosa Ziehau return ENOMEM; 8426523ab7eSSepherosa Ziehau 843b7bb4816SSepherosa Ziehau return 0; 844b7bb4816SSepherosa Ziehau } 845b7bb4816SSepherosa Ziehau 846b7bb4816SSepherosa Ziehau static void 847b7bb4816SSepherosa Ziehau vmbus_dma_free(struct vmbus_softc *sc) 848b7bb4816SSepherosa Ziehau { 849b7bb4816SSepherosa Ziehau int cpu; 850b7bb4816SSepherosa Ziehau 8516523ab7eSSepherosa Ziehau if (sc->vmbus_evtflags != NULL) { 8526523ab7eSSepherosa Ziehau hyperv_dmamem_free(&sc->vmbus_evtflags_dma, sc->vmbus_evtflags); 8536523ab7eSSepherosa Ziehau sc->vmbus_evtflags = NULL; 8546523ab7eSSepherosa Ziehau sc->vmbus_rx_evtflags = NULL; 8556523ab7eSSepherosa Ziehau sc->vmbus_tx_evtflags = NULL; 8566523ab7eSSepherosa Ziehau } 8576523ab7eSSepherosa Ziehau if (sc->vmbus_mnf1 != NULL) { 8586523ab7eSSepherosa Ziehau hyperv_dmamem_free(&sc->vmbus_mnf1_dma, sc->vmbus_mnf1); 8596523ab7eSSepherosa Ziehau sc->vmbus_mnf1 = NULL; 8606523ab7eSSepherosa Ziehau } 8616523ab7eSSepherosa Ziehau if (sc->vmbus_mnf2 != NULL) { 8626523ab7eSSepherosa Ziehau hyperv_dmamem_free(&sc->vmbus_mnf2_dma, sc->vmbus_mnf2); 8636523ab7eSSepherosa Ziehau sc->vmbus_mnf2 = NULL; 8646523ab7eSSepherosa Ziehau } 8656523ab7eSSepherosa Ziehau 866b7bb4816SSepherosa Ziehau CPU_FOREACH(cpu) { 867b7bb4816SSepherosa Ziehau if (VMBUS_PCPU_GET(sc, message, cpu) != NULL) { 868b7bb4816SSepherosa Ziehau hyperv_dmamem_free( 869b7bb4816SSepherosa Ziehau VMBUS_PCPU_PTR(sc, message_dma, cpu), 870b7bb4816SSepherosa Ziehau VMBUS_PCPU_GET(sc, message, cpu)); 871b7bb4816SSepherosa Ziehau VMBUS_PCPU_GET(sc, message, cpu) = NULL; 872b7bb4816SSepherosa Ziehau } 873b7bb4816SSepherosa Ziehau if (VMBUS_PCPU_GET(sc, event_flags, cpu) != NULL) { 874b7bb4816SSepherosa Ziehau hyperv_dmamem_free( 875b7bb4816SSepherosa Ziehau VMBUS_PCPU_PTR(sc, event_flags_dma, cpu), 876b7bb4816SSepherosa Ziehau VMBUS_PCPU_GET(sc, event_flags, cpu)); 877b7bb4816SSepherosa Ziehau VMBUS_PCPU_GET(sc, event_flags, cpu) = NULL; 878b7bb4816SSepherosa Ziehau } 879b7bb4816SSepherosa Ziehau } 880b7bb4816SSepherosa Ziehau } 881b7bb4816SSepherosa Ziehau 882b7bb4816SSepherosa Ziehau static int 883b7bb4816SSepherosa Ziehau vmbus_intr_setup(struct vmbus_softc *sc) 884b7bb4816SSepherosa Ziehau { 885b7bb4816SSepherosa Ziehau int cpu; 886b7bb4816SSepherosa Ziehau 887b7bb4816SSepherosa Ziehau CPU_FOREACH(cpu) { 888b7bb4816SSepherosa Ziehau char buf[MAXCOMLEN + 1]; 889b7bb4816SSepherosa Ziehau cpuset_t cpu_mask; 890b7bb4816SSepherosa Ziehau 891b7bb4816SSepherosa Ziehau /* Allocate an interrupt counter for Hyper-V interrupt */ 892b7bb4816SSepherosa Ziehau snprintf(buf, sizeof(buf), "cpu%d:hyperv", cpu); 893b7bb4816SSepherosa Ziehau intrcnt_add(buf, VMBUS_PCPU_PTR(sc, intr_cnt, cpu)); 894b7bb4816SSepherosa Ziehau 895b7bb4816SSepherosa Ziehau /* 896b7bb4816SSepherosa Ziehau * Setup taskqueue to handle events. Task will be per- 897b7bb4816SSepherosa Ziehau * channel. 898b7bb4816SSepherosa Ziehau */ 899b7bb4816SSepherosa Ziehau VMBUS_PCPU_GET(sc, event_tq, cpu) = taskqueue_create_fast( 900b7bb4816SSepherosa Ziehau "hyperv event", M_WAITOK, taskqueue_thread_enqueue, 901b7bb4816SSepherosa Ziehau VMBUS_PCPU_PTR(sc, event_tq, cpu)); 902b7bb4816SSepherosa Ziehau CPU_SETOF(cpu, &cpu_mask); 903b7bb4816SSepherosa Ziehau taskqueue_start_threads_cpuset( 904b7bb4816SSepherosa Ziehau VMBUS_PCPU_PTR(sc, event_tq, cpu), 1, PI_NET, &cpu_mask, 905b7bb4816SSepherosa Ziehau "hvevent%d", cpu); 906b7bb4816SSepherosa Ziehau 907b7bb4816SSepherosa Ziehau /* 908b7bb4816SSepherosa Ziehau * Setup tasks and taskqueues to handle messages. 909b7bb4816SSepherosa Ziehau */ 910b7bb4816SSepherosa Ziehau VMBUS_PCPU_GET(sc, message_tq, cpu) = taskqueue_create_fast( 911b7bb4816SSepherosa Ziehau "hyperv msg", M_WAITOK, taskqueue_thread_enqueue, 912b7bb4816SSepherosa Ziehau VMBUS_PCPU_PTR(sc, message_tq, cpu)); 913b7bb4816SSepherosa Ziehau CPU_SETOF(cpu, &cpu_mask); 914b7bb4816SSepherosa Ziehau taskqueue_start_threads_cpuset( 915b7bb4816SSepherosa Ziehau VMBUS_PCPU_PTR(sc, message_tq, cpu), 1, PI_NET, &cpu_mask, 916b7bb4816SSepherosa Ziehau "hvmsg%d", cpu); 917b7bb4816SSepherosa Ziehau TASK_INIT(VMBUS_PCPU_PTR(sc, message_task, cpu), 0, 918b7bb4816SSepherosa Ziehau vmbus_msg_task, sc); 919b7bb4816SSepherosa Ziehau } 920b7bb4816SSepherosa Ziehau 921b7bb4816SSepherosa Ziehau /* 922b7bb4816SSepherosa Ziehau * All Hyper-V ISR required resources are setup, now let's find a 923b7bb4816SSepherosa Ziehau * free IDT vector for Hyper-V ISR and set it up. 924b7bb4816SSepherosa Ziehau */ 925b7bb4816SSepherosa Ziehau sc->vmbus_idtvec = lapic_ipi_alloc(IDTVEC(vmbus_isr)); 926b7bb4816SSepherosa Ziehau if (sc->vmbus_idtvec < 0) { 927b7bb4816SSepherosa Ziehau device_printf(sc->vmbus_dev, "cannot find free IDT vector\n"); 928b7bb4816SSepherosa Ziehau return ENXIO; 929b7bb4816SSepherosa Ziehau } 930b7bb4816SSepherosa Ziehau if(bootverbose) { 931b7bb4816SSepherosa Ziehau device_printf(sc->vmbus_dev, "vmbus IDT vector %d\n", 932b7bb4816SSepherosa Ziehau sc->vmbus_idtvec); 933b7bb4816SSepherosa Ziehau } 934b7bb4816SSepherosa Ziehau return 0; 935b7bb4816SSepherosa Ziehau } 936b7bb4816SSepherosa Ziehau 937b7bb4816SSepherosa Ziehau static void 938b7bb4816SSepherosa Ziehau vmbus_intr_teardown(struct vmbus_softc *sc) 939b7bb4816SSepherosa Ziehau { 940b7bb4816SSepherosa Ziehau int cpu; 941b7bb4816SSepherosa Ziehau 942b7bb4816SSepherosa Ziehau if (sc->vmbus_idtvec >= 0) { 943b7bb4816SSepherosa Ziehau lapic_ipi_free(sc->vmbus_idtvec); 944b7bb4816SSepherosa Ziehau sc->vmbus_idtvec = -1; 945b7bb4816SSepherosa Ziehau } 946b7bb4816SSepherosa Ziehau 947b7bb4816SSepherosa Ziehau CPU_FOREACH(cpu) { 948b7bb4816SSepherosa Ziehau if (VMBUS_PCPU_GET(sc, event_tq, cpu) != NULL) { 949b7bb4816SSepherosa Ziehau taskqueue_free(VMBUS_PCPU_GET(sc, event_tq, cpu)); 950b7bb4816SSepherosa Ziehau VMBUS_PCPU_GET(sc, event_tq, cpu) = NULL; 951b7bb4816SSepherosa Ziehau } 952b7bb4816SSepherosa Ziehau if (VMBUS_PCPU_GET(sc, message_tq, cpu) != NULL) { 953b7bb4816SSepherosa Ziehau taskqueue_drain(VMBUS_PCPU_GET(sc, message_tq, cpu), 954b7bb4816SSepherosa Ziehau VMBUS_PCPU_PTR(sc, message_task, cpu)); 955b7bb4816SSepherosa Ziehau taskqueue_free(VMBUS_PCPU_GET(sc, message_tq, cpu)); 956b7bb4816SSepherosa Ziehau VMBUS_PCPU_GET(sc, message_tq, cpu) = NULL; 957b7bb4816SSepherosa Ziehau } 958b7bb4816SSepherosa Ziehau } 959b7bb4816SSepherosa Ziehau } 960b7bb4816SSepherosa Ziehau 961b7bb4816SSepherosa Ziehau static int 962b7bb4816SSepherosa Ziehau vmbus_read_ivar(device_t dev, device_t child, int index, uintptr_t *result) 963b7bb4816SSepherosa Ziehau { 964b7bb4816SSepherosa Ziehau return (ENOENT); 965b7bb4816SSepherosa Ziehau } 966b7bb4816SSepherosa Ziehau 967b7bb4816SSepherosa Ziehau static int 968b7bb4816SSepherosa Ziehau vmbus_child_pnpinfo_str(device_t dev, device_t child, char *buf, size_t buflen) 969b7bb4816SSepherosa Ziehau { 97047575345SSepherosa Ziehau const struct hv_vmbus_channel *chan; 971b7bb4816SSepherosa Ziehau char guidbuf[HYPERV_GUID_STRLEN]; 972b7bb4816SSepherosa Ziehau 9733b50b13bSSepherosa Ziehau chan = vmbus_get_channel(child); 9743b50b13bSSepherosa Ziehau if (chan == NULL) { 97547575345SSepherosa Ziehau /* Event timer device, which does not belong to a channel */ 976b7bb4816SSepherosa Ziehau return (0); 97747575345SSepherosa Ziehau } 978b7bb4816SSepherosa Ziehau 979b7bb4816SSepherosa Ziehau strlcat(buf, "classid=", buflen); 98047575345SSepherosa Ziehau hyperv_guid2str(&chan->ch_guid_type, guidbuf, sizeof(guidbuf)); 981b7bb4816SSepherosa Ziehau strlcat(buf, guidbuf, buflen); 982b7bb4816SSepherosa Ziehau 983b7bb4816SSepherosa Ziehau strlcat(buf, " deviceid=", buflen); 98447575345SSepherosa Ziehau hyperv_guid2str(&chan->ch_guid_inst, guidbuf, sizeof(guidbuf)); 985b7bb4816SSepherosa Ziehau strlcat(buf, guidbuf, buflen); 986b7bb4816SSepherosa Ziehau 987b7bb4816SSepherosa Ziehau return (0); 988b7bb4816SSepherosa Ziehau } 989b7bb4816SSepherosa Ziehau 99047575345SSepherosa Ziehau int 99147575345SSepherosa Ziehau hv_vmbus_child_device_register(struct hv_vmbus_channel *chan) 992b7bb4816SSepherosa Ziehau { 99347575345SSepherosa Ziehau struct vmbus_softc *sc = chan->vmbus_sc; 99447575345SSepherosa Ziehau device_t parent = sc->vmbus_dev; 99547575345SSepherosa Ziehau int error = 0; 996b7bb4816SSepherosa Ziehau 997dab4260cSSepherosa Ziehau /* New channel has been offered */ 998dab4260cSSepherosa Ziehau vmbus_scan_newchan(sc); 999dab4260cSSepherosa Ziehau 100047575345SSepherosa Ziehau chan->ch_dev = device_add_child(parent, NULL, -1); 100147575345SSepherosa Ziehau if (chan->ch_dev == NULL) { 100247575345SSepherosa Ziehau device_printf(parent, "device_add_child for chan%u failed\n", 100347575345SSepherosa Ziehau chan->ch_id); 100447575345SSepherosa Ziehau error = ENXIO; 100547575345SSepherosa Ziehau goto done; 1006b7bb4816SSepherosa Ziehau } 10073b50b13bSSepherosa Ziehau device_set_ivars(chan->ch_dev, chan); 1008b7bb4816SSepherosa Ziehau 100947575345SSepherosa Ziehau done: 101047575345SSepherosa Ziehau /* New device has been/should be added to vmbus. */ 1011796a90bfSSepherosa Ziehau vmbus_scan_newdev(sc); 101247575345SSepherosa Ziehau return error; 1013b7bb4816SSepherosa Ziehau } 1014b7bb4816SSepherosa Ziehau 1015b7bb4816SSepherosa Ziehau int 101647575345SSepherosa Ziehau hv_vmbus_child_device_unregister(struct hv_vmbus_channel *chan) 1017b7bb4816SSepherosa Ziehau { 101847575345SSepherosa Ziehau int error; 101947575345SSepherosa Ziehau 102047575345SSepherosa Ziehau if (chan->ch_dev == NULL) { 102147575345SSepherosa Ziehau /* Failed to add a device. */ 102247575345SSepherosa Ziehau return 0; 102347575345SSepherosa Ziehau } 102447575345SSepherosa Ziehau 1025b7bb4816SSepherosa Ziehau /* 1026b7bb4816SSepherosa Ziehau * XXXKYS: Ensure that this is the opposite of 1027b7bb4816SSepherosa Ziehau * device_add_child() 1028b7bb4816SSepherosa Ziehau */ 1029b7bb4816SSepherosa Ziehau mtx_lock(&Giant); 103047575345SSepherosa Ziehau error = device_delete_child(chan->vmbus_sc->vmbus_dev, chan->ch_dev); 1031b7bb4816SSepherosa Ziehau mtx_unlock(&Giant); 103247575345SSepherosa Ziehau 103347575345SSepherosa Ziehau return error; 1034b7bb4816SSepherosa Ziehau } 1035b7bb4816SSepherosa Ziehau 1036b7bb4816SSepherosa Ziehau static int 103747a3ee5cSSepherosa Ziehau vmbus_sysctl_version(SYSCTL_HANDLER_ARGS) 103847a3ee5cSSepherosa Ziehau { 103938d19df6SSepherosa Ziehau struct vmbus_softc *sc = arg1; 104047a3ee5cSSepherosa Ziehau char verstr[16]; 104147a3ee5cSSepherosa Ziehau 104247a3ee5cSSepherosa Ziehau snprintf(verstr, sizeof(verstr), "%u.%u", 104338d19df6SSepherosa Ziehau VMBUS_VERSION_MAJOR(sc->vmbus_version), 104438d19df6SSepherosa Ziehau VMBUS_VERSION_MINOR(sc->vmbus_version)); 104547a3ee5cSSepherosa Ziehau return sysctl_handle_string(oidp, verstr, sizeof(verstr), req); 104647a3ee5cSSepherosa Ziehau } 104747a3ee5cSSepherosa Ziehau 104838d19df6SSepherosa Ziehau static uint32_t 104938d19df6SSepherosa Ziehau vmbus_get_version_method(device_t bus, device_t dev) 105038d19df6SSepherosa Ziehau { 105138d19df6SSepherosa Ziehau struct vmbus_softc *sc = device_get_softc(bus); 105238d19df6SSepherosa Ziehau 105338d19df6SSepherosa Ziehau return sc->vmbus_version; 105438d19df6SSepherosa Ziehau } 105538d19df6SSepherosa Ziehau 105647a3ee5cSSepherosa Ziehau static int 105771ac1309SSepherosa Ziehau vmbus_probe_guid_method(device_t bus, device_t dev, 105871ac1309SSepherosa Ziehau const struct hyperv_guid *guid) 1059884d26c8SSepherosa Ziehau { 106047575345SSepherosa Ziehau const struct hv_vmbus_channel *chan = vmbus_get_channel(dev); 1061884d26c8SSepherosa Ziehau 106271ac1309SSepherosa Ziehau if (memcmp(&chan->ch_guid_type, guid, sizeof(struct hyperv_guid)) == 0) 1063884d26c8SSepherosa Ziehau return 0; 1064884d26c8SSepherosa Ziehau return ENXIO; 1065884d26c8SSepherosa Ziehau } 1066884d26c8SSepherosa Ziehau 1067884d26c8SSepherosa Ziehau static int 1068b7bb4816SSepherosa Ziehau vmbus_probe(device_t dev) 1069b7bb4816SSepherosa Ziehau { 1070b7bb4816SSepherosa Ziehau char *id[] = { "VMBUS", NULL }; 1071b7bb4816SSepherosa Ziehau 1072b7bb4816SSepherosa Ziehau if (ACPI_ID_PROBE(device_get_parent(dev), dev, id) == NULL || 1073b7bb4816SSepherosa Ziehau device_get_unit(dev) != 0 || vm_guest != VM_GUEST_HV || 1074b7bb4816SSepherosa Ziehau (hyperv_features & CPUID_HV_MSR_SYNIC) == 0) 1075b7bb4816SSepherosa Ziehau return (ENXIO); 1076b7bb4816SSepherosa Ziehau 1077b7bb4816SSepherosa Ziehau device_set_desc(dev, "Hyper-V Vmbus"); 1078b7bb4816SSepherosa Ziehau 1079b7bb4816SSepherosa Ziehau return (BUS_PROBE_DEFAULT); 1080b7bb4816SSepherosa Ziehau } 1081b7bb4816SSepherosa Ziehau 1082b7bb4816SSepherosa Ziehau /** 1083b7bb4816SSepherosa Ziehau * @brief Main vmbus driver initialization routine. 1084b7bb4816SSepherosa Ziehau * 1085b7bb4816SSepherosa Ziehau * Here, we 1086b7bb4816SSepherosa Ziehau * - initialize the vmbus driver context 1087b7bb4816SSepherosa Ziehau * - setup various driver entry points 1088b7bb4816SSepherosa Ziehau * - invoke the vmbus hv main init routine 1089b7bb4816SSepherosa Ziehau * - get the irq resource 1090b7bb4816SSepherosa Ziehau * - invoke the vmbus to add the vmbus root device 1091b7bb4816SSepherosa Ziehau * - setup the vmbus root device 1092b7bb4816SSepherosa Ziehau * - retrieve the channel offers 1093b7bb4816SSepherosa Ziehau */ 1094b7bb4816SSepherosa Ziehau static int 1095dd012a57SSepherosa Ziehau vmbus_doattach(struct vmbus_softc *sc) 1096b7bb4816SSepherosa Ziehau { 109747a3ee5cSSepherosa Ziehau struct sysctl_oid_list *child; 109847a3ee5cSSepherosa Ziehau struct sysctl_ctx_list *ctx; 1099b7bb4816SSepherosa Ziehau int ret; 1100b7bb4816SSepherosa Ziehau 1101b7bb4816SSepherosa Ziehau if (sc->vmbus_flags & VMBUS_FLAG_ATTACHED) 1102b7bb4816SSepherosa Ziehau return (0); 1103b7bb4816SSepherosa Ziehau sc->vmbus_flags |= VMBUS_FLAG_ATTACHED; 1104b7bb4816SSepherosa Ziehau 1105796a90bfSSepherosa Ziehau mtx_init(&sc->vmbus_scan_lock, "vmbus scan", NULL, MTX_DEF); 1106ee7e313fSSepherosa Ziehau sc->vmbus_gpadl = VMBUS_GPADL_START; 11077fbf0730SSepherosa Ziehau mtx_init(&sc->vmbus_chlist_lock, "vmbus chlist", NULL, MTX_DEF); 11087fbf0730SSepherosa Ziehau TAILQ_INIT(&sc->vmbus_chlist); 1109af3be0bfSSepherosa Ziehau sc->vmbus_chmap = malloc( 1110af3be0bfSSepherosa Ziehau sizeof(struct hv_vmbus_channel *) * VMBUS_CHAN_MAX, M_DEVBUF, 1111af3be0bfSSepherosa Ziehau M_WAITOK | M_ZERO); 1112796a90bfSSepherosa Ziehau 1113b7bb4816SSepherosa Ziehau /* 1114236764b1SSepherosa Ziehau * Create context for "post message" Hypercalls 1115236764b1SSepherosa Ziehau */ 1116236764b1SSepherosa Ziehau sc->vmbus_msg_hc = vmbus_msghc_ctx_create( 1117236764b1SSepherosa Ziehau bus_get_dma_tag(sc->vmbus_dev)); 1118236764b1SSepherosa Ziehau if (sc->vmbus_msg_hc == NULL) { 1119236764b1SSepherosa Ziehau ret = ENXIO; 1120236764b1SSepherosa Ziehau goto cleanup; 1121236764b1SSepherosa Ziehau } 1122236764b1SSepherosa Ziehau 1123236764b1SSepherosa Ziehau /* 1124b7bb4816SSepherosa Ziehau * Allocate DMA stuffs. 1125b7bb4816SSepherosa Ziehau */ 1126b7bb4816SSepherosa Ziehau ret = vmbus_dma_alloc(sc); 1127b7bb4816SSepherosa Ziehau if (ret != 0) 1128b7bb4816SSepherosa Ziehau goto cleanup; 1129b7bb4816SSepherosa Ziehau 1130b7bb4816SSepherosa Ziehau /* 1131b7bb4816SSepherosa Ziehau * Setup interrupt. 1132b7bb4816SSepherosa Ziehau */ 1133b7bb4816SSepherosa Ziehau ret = vmbus_intr_setup(sc); 1134b7bb4816SSepherosa Ziehau if (ret != 0) 1135b7bb4816SSepherosa Ziehau goto cleanup; 1136b7bb4816SSepherosa Ziehau 1137b7bb4816SSepherosa Ziehau /* 1138b7bb4816SSepherosa Ziehau * Setup SynIC. 1139b7bb4816SSepherosa Ziehau */ 1140b7bb4816SSepherosa Ziehau if (bootverbose) 1141b7bb4816SSepherosa Ziehau device_printf(sc->vmbus_dev, "smp_started = %d\n", smp_started); 1142b7bb4816SSepherosa Ziehau smp_rendezvous(NULL, vmbus_synic_setup, NULL, sc); 1143b7bb4816SSepherosa Ziehau sc->vmbus_flags |= VMBUS_FLAG_SYNIC; 1144b7bb4816SSepherosa Ziehau 1145b7bb4816SSepherosa Ziehau /* 1146250ca4caSSepherosa Ziehau * Initialize vmbus, e.g. connect to Hypervisor. 1147b7bb4816SSepherosa Ziehau */ 1148236764b1SSepherosa Ziehau ret = vmbus_init(sc); 1149236764b1SSepherosa Ziehau if (ret != 0) 1150236764b1SSepherosa Ziehau goto cleanup; 1151236764b1SSepherosa Ziehau 115238d19df6SSepherosa Ziehau if (sc->vmbus_version == VMBUS_VERSION_WS2008 || 115338d19df6SSepherosa Ziehau sc->vmbus_version == VMBUS_VERSION_WIN7) 1154b7bb4816SSepherosa Ziehau sc->vmbus_event_proc = vmbus_event_proc_compat; 1155b7bb4816SSepherosa Ziehau else 1156b7bb4816SSepherosa Ziehau sc->vmbus_event_proc = vmbus_event_proc; 1157b7bb4816SSepherosa Ziehau 1158796a90bfSSepherosa Ziehau ret = vmbus_scan(sc); 1159c1cc5bdfSSepherosa Ziehau if (ret != 0) 1160c1cc5bdfSSepherosa Ziehau goto cleanup; 1161b7bb4816SSepherosa Ziehau 116247a3ee5cSSepherosa Ziehau ctx = device_get_sysctl_ctx(sc->vmbus_dev); 116347a3ee5cSSepherosa Ziehau child = SYSCTL_CHILDREN(device_get_sysctl_tree(sc->vmbus_dev)); 116447a3ee5cSSepherosa Ziehau SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "version", 116538d19df6SSepherosa Ziehau CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, sc, 0, 116647a3ee5cSSepherosa Ziehau vmbus_sysctl_version, "A", "vmbus version"); 116747a3ee5cSSepherosa Ziehau 1168b7bb4816SSepherosa Ziehau return (ret); 1169b7bb4816SSepherosa Ziehau 1170b7bb4816SSepherosa Ziehau cleanup: 1171b7bb4816SSepherosa Ziehau vmbus_intr_teardown(sc); 1172b7bb4816SSepherosa Ziehau vmbus_dma_free(sc); 1173236764b1SSepherosa Ziehau if (sc->vmbus_msg_hc != NULL) { 1174236764b1SSepherosa Ziehau vmbus_msghc_ctx_destroy(sc->vmbus_msg_hc); 1175236764b1SSepherosa Ziehau sc->vmbus_msg_hc = NULL; 1176236764b1SSepherosa Ziehau } 1177af3be0bfSSepherosa Ziehau free(sc->vmbus_chmap, M_DEVBUF); 1178796a90bfSSepherosa Ziehau mtx_destroy(&sc->vmbus_scan_lock); 1179283ec9dfSSepherosa Ziehau mtx_destroy(&sc->vmbus_chlist_lock); 1180b7bb4816SSepherosa Ziehau 1181b7bb4816SSepherosa Ziehau return (ret); 1182b7bb4816SSepherosa Ziehau } 1183b7bb4816SSepherosa Ziehau 1184b7bb4816SSepherosa Ziehau static void 1185b7bb4816SSepherosa Ziehau vmbus_event_proc_dummy(struct vmbus_softc *sc __unused, int cpu __unused) 1186b7bb4816SSepherosa Ziehau { 1187b7bb4816SSepherosa Ziehau } 1188b7bb4816SSepherosa Ziehau 1189b7bb4816SSepherosa Ziehau static int 1190b7bb4816SSepherosa Ziehau vmbus_attach(device_t dev) 1191b7bb4816SSepherosa Ziehau { 1192b7bb4816SSepherosa Ziehau vmbus_sc = device_get_softc(dev); 1193b7bb4816SSepherosa Ziehau vmbus_sc->vmbus_dev = dev; 1194b7bb4816SSepherosa Ziehau vmbus_sc->vmbus_idtvec = -1; 1195b7bb4816SSepherosa Ziehau 1196b7bb4816SSepherosa Ziehau /* 1197b7bb4816SSepherosa Ziehau * Event processing logic will be configured: 1198b7bb4816SSepherosa Ziehau * - After the vmbus protocol version negotiation. 1199b7bb4816SSepherosa Ziehau * - Before we request channel offers. 1200b7bb4816SSepherosa Ziehau */ 1201b7bb4816SSepherosa Ziehau vmbus_sc->vmbus_event_proc = vmbus_event_proc_dummy; 1202b7bb4816SSepherosa Ziehau 1203b7bb4816SSepherosa Ziehau #ifndef EARLY_AP_STARTUP 1204b7bb4816SSepherosa Ziehau /* 1205b7bb4816SSepherosa Ziehau * If the system has already booted and thread 1206b7bb4816SSepherosa Ziehau * scheduling is possible indicated by the global 1207b7bb4816SSepherosa Ziehau * cold set to zero, we just call the driver 1208b7bb4816SSepherosa Ziehau * initialization directly. 1209b7bb4816SSepherosa Ziehau */ 1210b7bb4816SSepherosa Ziehau if (!cold) 1211b7bb4816SSepherosa Ziehau #endif 1212dd012a57SSepherosa Ziehau vmbus_doattach(vmbus_sc); 1213b7bb4816SSepherosa Ziehau 1214b7bb4816SSepherosa Ziehau return (0); 1215b7bb4816SSepherosa Ziehau } 1216b7bb4816SSepherosa Ziehau 1217b7bb4816SSepherosa Ziehau static void 1218b7bb4816SSepherosa Ziehau vmbus_sysinit(void *arg __unused) 1219b7bb4816SSepherosa Ziehau { 1220dd012a57SSepherosa Ziehau struct vmbus_softc *sc = vmbus_get_softc(); 1221dd012a57SSepherosa Ziehau 1222dd012a57SSepherosa Ziehau if (vm_guest != VM_GUEST_HV || sc == NULL) 1223b7bb4816SSepherosa Ziehau return; 1224b7bb4816SSepherosa Ziehau 1225b7bb4816SSepherosa Ziehau #ifndef EARLY_AP_STARTUP 1226b7bb4816SSepherosa Ziehau /* 1227b7bb4816SSepherosa Ziehau * If the system has already booted and thread 1228b7bb4816SSepherosa Ziehau * scheduling is possible, as indicated by the 1229b7bb4816SSepherosa Ziehau * global cold set to zero, we just call the driver 1230b7bb4816SSepherosa Ziehau * initialization directly. 1231b7bb4816SSepherosa Ziehau */ 1232b7bb4816SSepherosa Ziehau if (!cold) 1233b7bb4816SSepherosa Ziehau #endif 1234dd012a57SSepherosa Ziehau vmbus_doattach(sc); 1235b7bb4816SSepherosa Ziehau } 1236b7bb4816SSepherosa Ziehau 1237b7bb4816SSepherosa Ziehau static int 1238b7bb4816SSepherosa Ziehau vmbus_detach(device_t dev) 1239b7bb4816SSepherosa Ziehau { 1240b7bb4816SSepherosa Ziehau struct vmbus_softc *sc = device_get_softc(dev); 1241b7bb4816SSepherosa Ziehau 1242*77321df6SSepherosa Ziehau vmbus_chan_destroy_all(sc); 12431ecb2466SSepherosa Ziehau 1244f24517f0SSepherosa Ziehau vmbus_disconnect(sc); 1245b7bb4816SSepherosa Ziehau 1246b7bb4816SSepherosa Ziehau if (sc->vmbus_flags & VMBUS_FLAG_SYNIC) { 1247b7bb4816SSepherosa Ziehau sc->vmbus_flags &= ~VMBUS_FLAG_SYNIC; 1248b7bb4816SSepherosa Ziehau smp_rendezvous(NULL, vmbus_synic_teardown, NULL, NULL); 1249b7bb4816SSepherosa Ziehau } 1250b7bb4816SSepherosa Ziehau 1251b7bb4816SSepherosa Ziehau vmbus_intr_teardown(sc); 1252b7bb4816SSepherosa Ziehau vmbus_dma_free(sc); 1253b7bb4816SSepherosa Ziehau 1254236764b1SSepherosa Ziehau if (sc->vmbus_msg_hc != NULL) { 1255236764b1SSepherosa Ziehau vmbus_msghc_ctx_destroy(sc->vmbus_msg_hc); 1256236764b1SSepherosa Ziehau sc->vmbus_msg_hc = NULL; 1257236764b1SSepherosa Ziehau } 1258236764b1SSepherosa Ziehau 1259af3be0bfSSepherosa Ziehau free(sc->vmbus_chmap, M_DEVBUF); 1260796a90bfSSepherosa Ziehau mtx_destroy(&sc->vmbus_scan_lock); 1261283ec9dfSSepherosa Ziehau mtx_destroy(&sc->vmbus_chlist_lock); 1262283ec9dfSSepherosa Ziehau 1263b7bb4816SSepherosa Ziehau return (0); 1264b7bb4816SSepherosa Ziehau } 1265b7bb4816SSepherosa Ziehau 1266b7bb4816SSepherosa Ziehau static device_method_t vmbus_methods[] = { 1267b7bb4816SSepherosa Ziehau /* Device interface */ 1268b7bb4816SSepherosa Ziehau DEVMETHOD(device_probe, vmbus_probe), 1269b7bb4816SSepherosa Ziehau DEVMETHOD(device_attach, vmbus_attach), 1270b7bb4816SSepherosa Ziehau DEVMETHOD(device_detach, vmbus_detach), 1271b7bb4816SSepherosa Ziehau DEVMETHOD(device_shutdown, bus_generic_shutdown), 1272b7bb4816SSepherosa Ziehau DEVMETHOD(device_suspend, bus_generic_suspend), 1273b7bb4816SSepherosa Ziehau DEVMETHOD(device_resume, bus_generic_resume), 1274b7bb4816SSepherosa Ziehau 1275b7bb4816SSepherosa Ziehau /* Bus interface */ 1276b7bb4816SSepherosa Ziehau DEVMETHOD(bus_add_child, bus_generic_add_child), 1277b7bb4816SSepherosa Ziehau DEVMETHOD(bus_print_child, bus_generic_print_child), 1278b7bb4816SSepherosa Ziehau DEVMETHOD(bus_read_ivar, vmbus_read_ivar), 1279b7bb4816SSepherosa Ziehau DEVMETHOD(bus_child_pnpinfo_str, vmbus_child_pnpinfo_str), 1280b7bb4816SSepherosa Ziehau 128138d19df6SSepherosa Ziehau /* Vmbus interface */ 128238d19df6SSepherosa Ziehau DEVMETHOD(vmbus_get_version, vmbus_get_version_method), 1283884d26c8SSepherosa Ziehau DEVMETHOD(vmbus_probe_guid, vmbus_probe_guid_method), 128438d19df6SSepherosa Ziehau 1285b7bb4816SSepherosa Ziehau DEVMETHOD_END 1286b7bb4816SSepherosa Ziehau }; 1287b7bb4816SSepherosa Ziehau 1288b7bb4816SSepherosa Ziehau static driver_t vmbus_driver = { 1289b7bb4816SSepherosa Ziehau "vmbus", 1290b7bb4816SSepherosa Ziehau vmbus_methods, 1291b7bb4816SSepherosa Ziehau sizeof(struct vmbus_softc) 1292b7bb4816SSepherosa Ziehau }; 1293b7bb4816SSepherosa Ziehau 1294b7bb4816SSepherosa Ziehau static devclass_t vmbus_devclass; 1295b7bb4816SSepherosa Ziehau 1296b7bb4816SSepherosa Ziehau DRIVER_MODULE(vmbus, acpi, vmbus_driver, vmbus_devclass, NULL, NULL); 1297b7bb4816SSepherosa Ziehau MODULE_DEPEND(vmbus, acpi, 1, 1, 1); 1298b7bb4816SSepherosa Ziehau MODULE_VERSION(vmbus, 1); 1299b7bb4816SSepherosa Ziehau 1300b7bb4816SSepherosa Ziehau #ifndef EARLY_AP_STARTUP 1301b7bb4816SSepherosa Ziehau /* 1302b7bb4816SSepherosa Ziehau * NOTE: 1303b7bb4816SSepherosa Ziehau * We have to start as the last step of SI_SUB_SMP, i.e. after SMP is 1304b7bb4816SSepherosa Ziehau * initialized. 1305b7bb4816SSepherosa Ziehau */ 1306b7bb4816SSepherosa Ziehau SYSINIT(vmbus_initialize, SI_SUB_SMP, SI_ORDER_ANY, vmbus_sysinit, NULL); 1307b7bb4816SSepherosa Ziehau #endif 1308