Index: head/sys/dev/hyperv/vmbus/vmbus.c =================================================================== --- head/sys/dev/hyperv/vmbus/vmbus.c (revision 308723) +++ head/sys/dev/hyperv/vmbus/vmbus.c (revision 308724) @@ -1,1216 +1,1450 @@ /*- * Copyright (c) 2009-2012,2016 Microsoft Corp. * Copyright (c) 2012 NetApp Inc. * Copyright (c) 2012 Citrix Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice unmodified, this list of conditions, and the following * disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* * VM Bus Driver Implementation */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include +#include #include +#include #include #include +#include #include #include #include #include #include #include #include #include "acpi_if.h" +#include "pcib_if.h" #include "vmbus_if.h" #define VMBUS_GPADL_START 0xe1e10 struct vmbus_msghc { struct vmbus_xact *mh_xact; struct hypercall_postmsg_in mh_inprm_save; }; static int vmbus_probe(device_t); static int vmbus_attach(device_t); static int vmbus_detach(device_t); static int vmbus_read_ivar(device_t, device_t, int, uintptr_t *); static int vmbus_child_pnpinfo_str(device_t, device_t, char *, size_t); +static struct resource *vmbus_alloc_resource(device_t dev, + device_t child, int type, int *rid, + rman_res_t start, rman_res_t end, + rman_res_t count, u_int flags); +static int vmbus_alloc_msi(device_t bus, device_t dev, + int count, int maxcount, int *irqs); +static int vmbus_release_msi(device_t bus, device_t dev, + int count, int *irqs); +static int vmbus_alloc_msix(device_t bus, device_t dev, + int *irq); +static int vmbus_release_msix(device_t bus, device_t dev, + int irq); +static int vmbus_map_msi(device_t bus, device_t dev, + int irq, uint64_t *addr, uint32_t *data); static uint32_t vmbus_get_version_method(device_t, device_t); static int vmbus_probe_guid_method(device_t, device_t, const struct hyperv_guid *); static uint32_t vmbus_get_vcpu_id_method(device_t bus, device_t dev, int cpu); static int vmbus_init(struct vmbus_softc *); static int vmbus_connect(struct vmbus_softc *, uint32_t); static int vmbus_req_channels(struct vmbus_softc *sc); static void vmbus_disconnect(struct vmbus_softc *); static int vmbus_scan(struct vmbus_softc *); static void vmbus_scan_teardown(struct vmbus_softc *); static void vmbus_scan_done(struct vmbus_softc *, const struct vmbus_message *); static void vmbus_chanmsg_handle(struct vmbus_softc *, const struct vmbus_message *); static void vmbus_msg_task(void *, int); static void vmbus_synic_setup(void *); static void vmbus_synic_teardown(void *); static int vmbus_sysctl_version(SYSCTL_HANDLER_ARGS); static int vmbus_dma_alloc(struct vmbus_softc *); static void vmbus_dma_free(struct vmbus_softc *); static int vmbus_intr_setup(struct vmbus_softc *); static void vmbus_intr_teardown(struct vmbus_softc *); static int vmbus_doattach(struct vmbus_softc *); static void vmbus_event_proc_dummy(struct vmbus_softc *, int); static struct vmbus_softc *vmbus_sc; extern inthand_t IDTVEC(vmbus_isr); static const uint32_t vmbus_version[] = { VMBUS_VERSION_WIN8_1, VMBUS_VERSION_WIN8, VMBUS_VERSION_WIN7, VMBUS_VERSION_WS2008 }; static const vmbus_chanmsg_proc_t vmbus_chanmsg_handlers[VMBUS_CHANMSG_TYPE_MAX] = { VMBUS_CHANMSG_PROC(CHOFFER_DONE, vmbus_scan_done), VMBUS_CHANMSG_PROC_WAKEUP(CONNECT_RESP) }; static device_method_t vmbus_methods[] = { /* Device interface */ DEVMETHOD(device_probe, vmbus_probe), DEVMETHOD(device_attach, vmbus_attach), DEVMETHOD(device_detach, vmbus_detach), DEVMETHOD(device_shutdown, bus_generic_shutdown), DEVMETHOD(device_suspend, bus_generic_suspend), DEVMETHOD(device_resume, bus_generic_resume), /* Bus interface */ DEVMETHOD(bus_add_child, bus_generic_add_child), DEVMETHOD(bus_print_child, bus_generic_print_child), DEVMETHOD(bus_read_ivar, vmbus_read_ivar), DEVMETHOD(bus_child_pnpinfo_str, vmbus_child_pnpinfo_str), + DEVMETHOD(bus_alloc_resource, vmbus_alloc_resource), + DEVMETHOD(bus_release_resource, bus_generic_release_resource), + DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), + DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), + DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), + DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), +#if __FreeBSD_version >= 1100000 + DEVMETHOD(bus_get_cpus, bus_generic_get_cpus), +#endif + /* pcib interface */ + DEVMETHOD(pcib_alloc_msi, vmbus_alloc_msi), + DEVMETHOD(pcib_release_msi, vmbus_release_msi), + DEVMETHOD(pcib_alloc_msix, vmbus_alloc_msix), + DEVMETHOD(pcib_release_msix, vmbus_release_msix), + DEVMETHOD(pcib_map_msi, vmbus_map_msi), + /* Vmbus interface */ DEVMETHOD(vmbus_get_version, vmbus_get_version_method), DEVMETHOD(vmbus_probe_guid, vmbus_probe_guid_method), DEVMETHOD(vmbus_get_vcpu_id, vmbus_get_vcpu_id_method), DEVMETHOD_END }; static driver_t vmbus_driver = { "vmbus", vmbus_methods, sizeof(struct vmbus_softc) }; static devclass_t vmbus_devclass; DRIVER_MODULE(vmbus, acpi, vmbus_driver, vmbus_devclass, NULL, NULL); MODULE_DEPEND(vmbus, acpi, 1, 1, 1); MODULE_VERSION(vmbus, 1); static __inline struct vmbus_softc * vmbus_get_softc(void) { return vmbus_sc; } void vmbus_msghc_reset(struct vmbus_msghc *mh, size_t dsize) { struct hypercall_postmsg_in *inprm; if (dsize > HYPERCALL_POSTMSGIN_DSIZE_MAX) panic("invalid data size %zu", dsize); inprm = vmbus_xact_req_data(mh->mh_xact); memset(inprm, 0, HYPERCALL_POSTMSGIN_SIZE); inprm->hc_connid = VMBUS_CONNID_MESSAGE; inprm->hc_msgtype = HYPERV_MSGTYPE_CHANNEL; inprm->hc_dsize = dsize; } struct vmbus_msghc * vmbus_msghc_get(struct vmbus_softc *sc, size_t dsize) { struct vmbus_msghc *mh; struct vmbus_xact *xact; if (dsize > HYPERCALL_POSTMSGIN_DSIZE_MAX) panic("invalid data size %zu", dsize); xact = vmbus_xact_get(sc->vmbus_xc, dsize + __offsetof(struct hypercall_postmsg_in, hc_data[0])); if (xact == NULL) return (NULL); mh = vmbus_xact_priv(xact, sizeof(*mh)); mh->mh_xact = xact; vmbus_msghc_reset(mh, dsize); return (mh); } void vmbus_msghc_put(struct vmbus_softc *sc __unused, struct vmbus_msghc *mh) { vmbus_xact_put(mh->mh_xact); } void * vmbus_msghc_dataptr(struct vmbus_msghc *mh) { struct hypercall_postmsg_in *inprm; inprm = vmbus_xact_req_data(mh->mh_xact); return (inprm->hc_data); } int vmbus_msghc_exec_noresult(struct vmbus_msghc *mh) { sbintime_t time = SBT_1MS; struct hypercall_postmsg_in *inprm; bus_addr_t inprm_paddr; int i; inprm = vmbus_xact_req_data(mh->mh_xact); inprm_paddr = vmbus_xact_req_paddr(mh->mh_xact); /* * Save the input parameter so that we could restore the input * parameter if the Hypercall failed. * * XXX * Is this really necessary?! i.e. Will the Hypercall ever * overwrite the input parameter? */ memcpy(&mh->mh_inprm_save, inprm, HYPERCALL_POSTMSGIN_SIZE); /* * In order to cope with transient failures, e.g. insufficient * resources on host side, we retry the post message Hypercall * several times. 20 retries seem sufficient. */ #define HC_RETRY_MAX 20 for (i = 0; i < HC_RETRY_MAX; ++i) { uint64_t status; status = hypercall_post_message(inprm_paddr); if (status == HYPERCALL_STATUS_SUCCESS) return 0; pause_sbt("hcpmsg", time, 0, C_HARDCLOCK); if (time < SBT_1S * 2) time *= 2; /* Restore input parameter and try again */ memcpy(inprm, &mh->mh_inprm_save, HYPERCALL_POSTMSGIN_SIZE); } #undef HC_RETRY_MAX return EIO; } int vmbus_msghc_exec(struct vmbus_softc *sc __unused, struct vmbus_msghc *mh) { int error; vmbus_xact_activate(mh->mh_xact); error = vmbus_msghc_exec_noresult(mh); if (error) vmbus_xact_deactivate(mh->mh_xact); return error; } const struct vmbus_message * vmbus_msghc_wait_result(struct vmbus_softc *sc __unused, struct vmbus_msghc *mh) { size_t resp_len; return (vmbus_xact_wait(mh->mh_xact, &resp_len)); } void vmbus_msghc_wakeup(struct vmbus_softc *sc, const struct vmbus_message *msg) { vmbus_xact_ctx_wakeup(sc->vmbus_xc, msg, sizeof(*msg)); } uint32_t vmbus_gpadl_alloc(struct vmbus_softc *sc) { return atomic_fetchadd_int(&sc->vmbus_gpadl, 1); } static int vmbus_connect(struct vmbus_softc *sc, uint32_t version) { struct vmbus_chanmsg_connect *req; const struct vmbus_message *msg; struct vmbus_msghc *mh; int error, done = 0; mh = vmbus_msghc_get(sc, sizeof(*req)); if (mh == NULL) return ENXIO; req = vmbus_msghc_dataptr(mh); req->chm_hdr.chm_type = VMBUS_CHANMSG_TYPE_CONNECT; req->chm_ver = version; req->chm_evtflags = sc->vmbus_evtflags_dma.hv_paddr; req->chm_mnf1 = sc->vmbus_mnf1_dma.hv_paddr; req->chm_mnf2 = sc->vmbus_mnf2_dma.hv_paddr; error = vmbus_msghc_exec(sc, mh); if (error) { vmbus_msghc_put(sc, mh); return error; } msg = vmbus_msghc_wait_result(sc, mh); done = ((const struct vmbus_chanmsg_connect_resp *) msg->msg_data)->chm_done; vmbus_msghc_put(sc, mh); return (done ? 0 : EOPNOTSUPP); } static int vmbus_init(struct vmbus_softc *sc) { int i; for (i = 0; i < nitems(vmbus_version); ++i) { int error; error = vmbus_connect(sc, vmbus_version[i]); if (!error) { sc->vmbus_version = vmbus_version[i]; device_printf(sc->vmbus_dev, "version %u.%u\n", VMBUS_VERSION_MAJOR(sc->vmbus_version), VMBUS_VERSION_MINOR(sc->vmbus_version)); return 0; } } return ENXIO; } static void vmbus_disconnect(struct vmbus_softc *sc) { struct vmbus_chanmsg_disconnect *req; struct vmbus_msghc *mh; int error; mh = vmbus_msghc_get(sc, sizeof(*req)); if (mh == NULL) { device_printf(sc->vmbus_dev, "can not get msg hypercall for disconnect\n"); return; } req = vmbus_msghc_dataptr(mh); req->chm_hdr.chm_type = VMBUS_CHANMSG_TYPE_DISCONNECT; error = vmbus_msghc_exec_noresult(mh); vmbus_msghc_put(sc, mh); if (error) { device_printf(sc->vmbus_dev, "disconnect msg hypercall failed\n"); } } static int vmbus_req_channels(struct vmbus_softc *sc) { struct vmbus_chanmsg_chrequest *req; struct vmbus_msghc *mh; int error; mh = vmbus_msghc_get(sc, sizeof(*req)); if (mh == NULL) return ENXIO; req = vmbus_msghc_dataptr(mh); req->chm_hdr.chm_type = VMBUS_CHANMSG_TYPE_CHREQUEST; error = vmbus_msghc_exec_noresult(mh); vmbus_msghc_put(sc, mh); return error; } static void vmbus_scan_done_task(void *xsc, int pending __unused) { struct vmbus_softc *sc = xsc; mtx_lock(&Giant); sc->vmbus_scandone = true; mtx_unlock(&Giant); wakeup(&sc->vmbus_scandone); } static void vmbus_scan_done(struct vmbus_softc *sc, const struct vmbus_message *msg __unused) { taskqueue_enqueue(sc->vmbus_devtq, &sc->vmbus_scandone_task); } static int vmbus_scan(struct vmbus_softc *sc) { int error; /* * Identify, probe and attach for non-channel devices. */ bus_generic_probe(sc->vmbus_dev); bus_generic_attach(sc->vmbus_dev); /* * This taskqueue serializes vmbus devices' attach and detach * for channel offer and rescind messages. */ sc->vmbus_devtq = taskqueue_create("vmbus dev", M_WAITOK, taskqueue_thread_enqueue, &sc->vmbus_devtq); taskqueue_start_threads(&sc->vmbus_devtq, 1, PI_NET, "vmbusdev"); TASK_INIT(&sc->vmbus_scandone_task, 0, vmbus_scan_done_task, sc); /* * This taskqueue handles sub-channel detach, so that vmbus * device's detach running in vmbus_devtq can drain its sub- * channels. */ sc->vmbus_subchtq = taskqueue_create("vmbus subch", M_WAITOK, taskqueue_thread_enqueue, &sc->vmbus_subchtq); taskqueue_start_threads(&sc->vmbus_subchtq, 1, PI_NET, "vmbussch"); /* * Start vmbus scanning. */ error = vmbus_req_channels(sc); if (error) { device_printf(sc->vmbus_dev, "channel request failed: %d\n", error); return (error); } /* * Wait for all vmbus devices from the initial channel offers to be * attached. */ GIANT_REQUIRED; while (!sc->vmbus_scandone) mtx_sleep(&sc->vmbus_scandone, &Giant, 0, "vmbusdev", 0); if (bootverbose) { device_printf(sc->vmbus_dev, "device scan, probe and attach " "done\n"); } return (0); } static void vmbus_scan_teardown(struct vmbus_softc *sc) { GIANT_REQUIRED; if (sc->vmbus_devtq != NULL) { mtx_unlock(&Giant); taskqueue_free(sc->vmbus_devtq); mtx_lock(&Giant); sc->vmbus_devtq = NULL; } if (sc->vmbus_subchtq != NULL) { mtx_unlock(&Giant); taskqueue_free(sc->vmbus_subchtq); mtx_lock(&Giant); sc->vmbus_subchtq = NULL; } } static void vmbus_chanmsg_handle(struct vmbus_softc *sc, const struct vmbus_message *msg) { vmbus_chanmsg_proc_t msg_proc; uint32_t msg_type; msg_type = ((const struct vmbus_chanmsg_hdr *)msg->msg_data)->chm_type; if (msg_type >= VMBUS_CHANMSG_TYPE_MAX) { device_printf(sc->vmbus_dev, "unknown message type 0x%x\n", msg_type); return; } msg_proc = vmbus_chanmsg_handlers[msg_type]; if (msg_proc != NULL) msg_proc(sc, msg); /* Channel specific processing */ vmbus_chan_msgproc(sc, msg); } static void vmbus_msg_task(void *xsc, int pending __unused) { struct vmbus_softc *sc = xsc; volatile struct vmbus_message *msg; msg = VMBUS_PCPU_GET(sc, message, curcpu) + VMBUS_SINT_MESSAGE; for (;;) { if (msg->msg_type == HYPERV_MSGTYPE_NONE) { /* No message */ break; } else if (msg->msg_type == HYPERV_MSGTYPE_CHANNEL) { /* Channel message */ vmbus_chanmsg_handle(sc, __DEVOLATILE(const struct vmbus_message *, msg)); } msg->msg_type = HYPERV_MSGTYPE_NONE; /* * Make sure the write to msg_type (i.e. set to * HYPERV_MSGTYPE_NONE) happens before we read the * msg_flags and EOMing. Otherwise, the EOMing will * not deliver any more messages since there is no * empty slot * * NOTE: * mb() is used here, since atomic_thread_fence_seq_cst() * will become compiler fence on UP kernel. */ mb(); if (msg->msg_flags & VMBUS_MSGFLAG_PENDING) { /* * This will cause message queue rescan to possibly * deliver another msg from the hypervisor */ wrmsr(MSR_HV_EOM, 0); } } } static __inline int vmbus_handle_intr1(struct vmbus_softc *sc, struct trapframe *frame, int cpu) { volatile struct vmbus_message *msg; struct vmbus_message *msg_base; msg_base = VMBUS_PCPU_GET(sc, message, cpu); /* * Check event timer. * * TODO: move this to independent IDT vector. */ msg = msg_base + VMBUS_SINT_TIMER; if (msg->msg_type == HYPERV_MSGTYPE_TIMER_EXPIRED) { msg->msg_type = HYPERV_MSGTYPE_NONE; vmbus_et_intr(frame); /* * Make sure the write to msg_type (i.e. set to * HYPERV_MSGTYPE_NONE) happens before we read the * msg_flags and EOMing. Otherwise, the EOMing will * not deliver any more messages since there is no * empty slot * * NOTE: * mb() is used here, since atomic_thread_fence_seq_cst() * will become compiler fence on UP kernel. */ mb(); if (msg->msg_flags & VMBUS_MSGFLAG_PENDING) { /* * This will cause message queue rescan to possibly * deliver another msg from the hypervisor */ wrmsr(MSR_HV_EOM, 0); } } /* * Check events. Hot path for network and storage I/O data; high rate. * * NOTE: * As recommended by the Windows guest fellows, we check events before * checking messages. */ sc->vmbus_event_proc(sc, cpu); /* * Check messages. Mainly management stuffs; ultra low rate. */ msg = msg_base + VMBUS_SINT_MESSAGE; if (__predict_false(msg->msg_type != HYPERV_MSGTYPE_NONE)) { taskqueue_enqueue(VMBUS_PCPU_GET(sc, message_tq, cpu), VMBUS_PCPU_PTR(sc, message_task, cpu)); } return (FILTER_HANDLED); } void vmbus_handle_intr(struct trapframe *trap_frame) { struct vmbus_softc *sc = vmbus_get_softc(); int cpu = curcpu; /* * Disable preemption. */ critical_enter(); /* * Do a little interrupt counting. */ (*VMBUS_PCPU_GET(sc, intr_cnt, cpu))++; vmbus_handle_intr1(sc, trap_frame, cpu); /* * Enable preemption. */ critical_exit(); } static void vmbus_synic_setup(void *xsc) { struct vmbus_softc *sc = xsc; int cpu = curcpu; uint64_t val, orig; uint32_t sint; if (hyperv_features & CPUID_HV_MSR_VP_INDEX) { /* Save virtual processor id. */ VMBUS_PCPU_GET(sc, vcpuid, cpu) = rdmsr(MSR_HV_VP_INDEX); } else { /* Set virtual processor id to 0 for compatibility. */ VMBUS_PCPU_GET(sc, vcpuid, cpu) = 0; } /* * Setup the SynIC message. */ orig = rdmsr(MSR_HV_SIMP); val = MSR_HV_SIMP_ENABLE | (orig & MSR_HV_SIMP_RSVD_MASK) | ((VMBUS_PCPU_GET(sc, message_dma.hv_paddr, cpu) >> PAGE_SHIFT) << MSR_HV_SIMP_PGSHIFT); wrmsr(MSR_HV_SIMP, val); /* * Setup the SynIC event flags. */ orig = rdmsr(MSR_HV_SIEFP); val = MSR_HV_SIEFP_ENABLE | (orig & MSR_HV_SIEFP_RSVD_MASK) | ((VMBUS_PCPU_GET(sc, event_flags_dma.hv_paddr, cpu) >> PAGE_SHIFT) << MSR_HV_SIEFP_PGSHIFT); wrmsr(MSR_HV_SIEFP, val); /* * Configure and unmask SINT for message and event flags. */ sint = MSR_HV_SINT0 + VMBUS_SINT_MESSAGE; orig = rdmsr(sint); val = sc->vmbus_idtvec | MSR_HV_SINT_AUTOEOI | (orig & MSR_HV_SINT_RSVD_MASK); wrmsr(sint, val); /* * Configure and unmask SINT for timer. */ sint = MSR_HV_SINT0 + VMBUS_SINT_TIMER; orig = rdmsr(sint); val = sc->vmbus_idtvec | MSR_HV_SINT_AUTOEOI | (orig & MSR_HV_SINT_RSVD_MASK); wrmsr(sint, val); /* * All done; enable SynIC. */ orig = rdmsr(MSR_HV_SCONTROL); val = MSR_HV_SCTRL_ENABLE | (orig & MSR_HV_SCTRL_RSVD_MASK); wrmsr(MSR_HV_SCONTROL, val); } static void vmbus_synic_teardown(void *arg) { uint64_t orig; uint32_t sint; /* * Disable SynIC. */ orig = rdmsr(MSR_HV_SCONTROL); wrmsr(MSR_HV_SCONTROL, (orig & MSR_HV_SCTRL_RSVD_MASK)); /* * Mask message and event flags SINT. */ sint = MSR_HV_SINT0 + VMBUS_SINT_MESSAGE; orig = rdmsr(sint); wrmsr(sint, orig | MSR_HV_SINT_MASKED); /* * Mask timer SINT. */ sint = MSR_HV_SINT0 + VMBUS_SINT_TIMER; orig = rdmsr(sint); wrmsr(sint, orig | MSR_HV_SINT_MASKED); /* * Teardown SynIC message. */ orig = rdmsr(MSR_HV_SIMP); wrmsr(MSR_HV_SIMP, (orig & MSR_HV_SIMP_RSVD_MASK)); /* * Teardown SynIC event flags. */ orig = rdmsr(MSR_HV_SIEFP); wrmsr(MSR_HV_SIEFP, (orig & MSR_HV_SIEFP_RSVD_MASK)); } static int vmbus_dma_alloc(struct vmbus_softc *sc) { bus_dma_tag_t parent_dtag; uint8_t *evtflags; int cpu; parent_dtag = bus_get_dma_tag(sc->vmbus_dev); CPU_FOREACH(cpu) { void *ptr; /* * Per-cpu messages and event flags. */ ptr = hyperv_dmamem_alloc(parent_dtag, PAGE_SIZE, 0, PAGE_SIZE, VMBUS_PCPU_PTR(sc, message_dma, cpu), BUS_DMA_WAITOK | BUS_DMA_ZERO); if (ptr == NULL) return ENOMEM; VMBUS_PCPU_GET(sc, message, cpu) = ptr; ptr = hyperv_dmamem_alloc(parent_dtag, PAGE_SIZE, 0, PAGE_SIZE, VMBUS_PCPU_PTR(sc, event_flags_dma, cpu), BUS_DMA_WAITOK | BUS_DMA_ZERO); if (ptr == NULL) return ENOMEM; VMBUS_PCPU_GET(sc, event_flags, cpu) = ptr; } evtflags = hyperv_dmamem_alloc(parent_dtag, PAGE_SIZE, 0, PAGE_SIZE, &sc->vmbus_evtflags_dma, BUS_DMA_WAITOK | BUS_DMA_ZERO); if (evtflags == NULL) return ENOMEM; sc->vmbus_rx_evtflags = (u_long *)evtflags; sc->vmbus_tx_evtflags = (u_long *)(evtflags + (PAGE_SIZE / 2)); sc->vmbus_evtflags = evtflags; sc->vmbus_mnf1 = hyperv_dmamem_alloc(parent_dtag, PAGE_SIZE, 0, PAGE_SIZE, &sc->vmbus_mnf1_dma, BUS_DMA_WAITOK | BUS_DMA_ZERO); if (sc->vmbus_mnf1 == NULL) return ENOMEM; sc->vmbus_mnf2 = hyperv_dmamem_alloc(parent_dtag, PAGE_SIZE, 0, sizeof(struct vmbus_mnf), &sc->vmbus_mnf2_dma, BUS_DMA_WAITOK | BUS_DMA_ZERO); if (sc->vmbus_mnf2 == NULL) return ENOMEM; return 0; } static void vmbus_dma_free(struct vmbus_softc *sc) { int cpu; if (sc->vmbus_evtflags != NULL) { hyperv_dmamem_free(&sc->vmbus_evtflags_dma, sc->vmbus_evtflags); sc->vmbus_evtflags = NULL; sc->vmbus_rx_evtflags = NULL; sc->vmbus_tx_evtflags = NULL; } if (sc->vmbus_mnf1 != NULL) { hyperv_dmamem_free(&sc->vmbus_mnf1_dma, sc->vmbus_mnf1); sc->vmbus_mnf1 = NULL; } if (sc->vmbus_mnf2 != NULL) { hyperv_dmamem_free(&sc->vmbus_mnf2_dma, sc->vmbus_mnf2); sc->vmbus_mnf2 = NULL; } CPU_FOREACH(cpu) { if (VMBUS_PCPU_GET(sc, message, cpu) != NULL) { hyperv_dmamem_free( VMBUS_PCPU_PTR(sc, message_dma, cpu), VMBUS_PCPU_GET(sc, message, cpu)); VMBUS_PCPU_GET(sc, message, cpu) = NULL; } if (VMBUS_PCPU_GET(sc, event_flags, cpu) != NULL) { hyperv_dmamem_free( VMBUS_PCPU_PTR(sc, event_flags_dma, cpu), VMBUS_PCPU_GET(sc, event_flags, cpu)); VMBUS_PCPU_GET(sc, event_flags, cpu) = NULL; } } } static int vmbus_intr_setup(struct vmbus_softc *sc) { int cpu; CPU_FOREACH(cpu) { char buf[MAXCOMLEN + 1]; cpuset_t cpu_mask; /* Allocate an interrupt counter for Hyper-V interrupt */ snprintf(buf, sizeof(buf), "cpu%d:hyperv", cpu); intrcnt_add(buf, VMBUS_PCPU_PTR(sc, intr_cnt, cpu)); /* * Setup taskqueue to handle events. Task will be per- * channel. */ VMBUS_PCPU_GET(sc, event_tq, cpu) = taskqueue_create_fast( "hyperv event", M_WAITOK, taskqueue_thread_enqueue, VMBUS_PCPU_PTR(sc, event_tq, cpu)); CPU_SETOF(cpu, &cpu_mask); taskqueue_start_threads_cpuset( VMBUS_PCPU_PTR(sc, event_tq, cpu), 1, PI_NET, &cpu_mask, "hvevent%d", cpu); /* * Setup tasks and taskqueues to handle messages. */ VMBUS_PCPU_GET(sc, message_tq, cpu) = taskqueue_create_fast( "hyperv msg", M_WAITOK, taskqueue_thread_enqueue, VMBUS_PCPU_PTR(sc, message_tq, cpu)); CPU_SETOF(cpu, &cpu_mask); taskqueue_start_threads_cpuset( VMBUS_PCPU_PTR(sc, message_tq, cpu), 1, PI_NET, &cpu_mask, "hvmsg%d", cpu); TASK_INIT(VMBUS_PCPU_PTR(sc, message_task, cpu), 0, vmbus_msg_task, sc); } /* * All Hyper-V ISR required resources are setup, now let's find a * free IDT vector for Hyper-V ISR and set it up. */ sc->vmbus_idtvec = lapic_ipi_alloc(IDTVEC(vmbus_isr)); if (sc->vmbus_idtvec < 0) { device_printf(sc->vmbus_dev, "cannot find free IDT vector\n"); return ENXIO; } if (bootverbose) { device_printf(sc->vmbus_dev, "vmbus IDT vector %d\n", sc->vmbus_idtvec); } return 0; } static void vmbus_intr_teardown(struct vmbus_softc *sc) { int cpu; if (sc->vmbus_idtvec >= 0) { lapic_ipi_free(sc->vmbus_idtvec); sc->vmbus_idtvec = -1; } CPU_FOREACH(cpu) { if (VMBUS_PCPU_GET(sc, event_tq, cpu) != NULL) { taskqueue_free(VMBUS_PCPU_GET(sc, event_tq, cpu)); VMBUS_PCPU_GET(sc, event_tq, cpu) = NULL; } if (VMBUS_PCPU_GET(sc, message_tq, cpu) != NULL) { taskqueue_drain(VMBUS_PCPU_GET(sc, message_tq, cpu), VMBUS_PCPU_PTR(sc, message_task, cpu)); taskqueue_free(VMBUS_PCPU_GET(sc, message_tq, cpu)); VMBUS_PCPU_GET(sc, message_tq, cpu) = NULL; } } } static int vmbus_read_ivar(device_t dev, device_t child, int index, uintptr_t *result) { return (ENOENT); } static int vmbus_child_pnpinfo_str(device_t dev, device_t child, char *buf, size_t buflen) { const struct vmbus_channel *chan; char guidbuf[HYPERV_GUID_STRLEN]; chan = vmbus_get_channel(child); if (chan == NULL) { /* Event timer device, which does not belong to a channel */ return (0); } strlcat(buf, "classid=", buflen); hyperv_guid2str(&chan->ch_guid_type, guidbuf, sizeof(guidbuf)); strlcat(buf, guidbuf, buflen); strlcat(buf, " deviceid=", buflen); hyperv_guid2str(&chan->ch_guid_inst, guidbuf, sizeof(guidbuf)); strlcat(buf, guidbuf, buflen); return (0); } int vmbus_add_child(struct vmbus_channel *chan) { struct vmbus_softc *sc = chan->ch_vmbus; device_t parent = sc->vmbus_dev; mtx_lock(&Giant); chan->ch_dev = device_add_child(parent, NULL, -1); if (chan->ch_dev == NULL) { mtx_unlock(&Giant); device_printf(parent, "device_add_child for chan%u failed\n", chan->ch_id); return (ENXIO); } device_set_ivars(chan->ch_dev, chan); device_probe_and_attach(chan->ch_dev); mtx_unlock(&Giant); return (0); } int vmbus_delete_child(struct vmbus_channel *chan) { int error = 0; mtx_lock(&Giant); if (chan->ch_dev != NULL) { error = device_delete_child(chan->ch_vmbus->vmbus_dev, chan->ch_dev); chan->ch_dev = NULL; } mtx_unlock(&Giant); return (error); } static int vmbus_sysctl_version(SYSCTL_HANDLER_ARGS) { struct vmbus_softc *sc = arg1; char verstr[16]; snprintf(verstr, sizeof(verstr), "%u.%u", VMBUS_VERSION_MAJOR(sc->vmbus_version), VMBUS_VERSION_MINOR(sc->vmbus_version)); return sysctl_handle_string(oidp, verstr, sizeof(verstr), req); } +/* + * We need the function to make sure the MMIO resource is allocated from the + * ranges found in _CRS. + * + * For the release function, we can use bus_generic_release_resource(). + */ +static struct resource * +vmbus_alloc_resource(device_t dev, device_t child, int type, int *rid, + rman_res_t start, rman_res_t end, rman_res_t count, u_int flags) +{ + struct vmbus_softc *sc = device_get_softc(dev); + device_t parent = device_get_parent(dev); + struct resource *res; + + if (type != SYS_RES_MEMORY) + res = BUS_ALLOC_RESOURCE(parent, child, type, rid, start, + end, count, flags); + else + res = pcib_host_res_alloc(&sc->vmbus_mmio_res, child, type, + rid, start, end, count, flags); + + return (res); +} + +static device_t +get_nexus(device_t vmbus) +{ + device_t acpi = device_get_parent(vmbus); + device_t nexus = device_get_parent(acpi); + return (nexus); +} + +static int +vmbus_alloc_msi(device_t bus, device_t dev, int count, int maxcount, int *irqs) +{ + return (PCIB_ALLOC_MSI(get_nexus(bus), dev, count, maxcount, irqs)); +} + +static int +vmbus_release_msi(device_t bus, device_t dev, int count, int *irqs) +{ + return (PCIB_RELEASE_MSI(get_nexus(bus), dev, count, irqs)); +} + +static int +vmbus_alloc_msix(device_t bus, device_t dev, int *irq) +{ + return (PCIB_ALLOC_MSIX(get_nexus(bus), dev, irq)); +} + +static int +vmbus_release_msix(device_t bus, device_t dev, int irq) +{ + return (PCIB_RELEASE_MSIX(get_nexus(bus), dev, irq)); +} + +static int +vmbus_map_msi(device_t bus, device_t dev, int irq, uint64_t *addr, + uint32_t *data) +{ + return (PCIB_MAP_MSI(get_nexus(bus), dev, irq, addr, data)); +} + static uint32_t vmbus_get_version_method(device_t bus, device_t dev) { struct vmbus_softc *sc = device_get_softc(bus); return sc->vmbus_version; } static int vmbus_probe_guid_method(device_t bus, device_t dev, const struct hyperv_guid *guid) { const struct vmbus_channel *chan = vmbus_get_channel(dev); if (memcmp(&chan->ch_guid_type, guid, sizeof(struct hyperv_guid)) == 0) return 0; return ENXIO; } static uint32_t vmbus_get_vcpu_id_method(device_t bus, device_t dev, int cpu) { const struct vmbus_softc *sc = device_get_softc(bus); return (VMBUS_PCPU_GET(sc, vcpuid, cpu)); } +#define VTPM_BASE_ADDR 0xfed40000 +#define FOUR_GB (1ULL << 32) + +enum parse_pass { parse_64, parse_32 }; + +struct parse_context { + device_t vmbus_dev; + enum parse_pass pass; +}; + +static ACPI_STATUS +parse_crs(ACPI_RESOURCE *res, void *ctx) +{ + const struct parse_context *pc = ctx; + device_t vmbus_dev = pc->vmbus_dev; + + struct vmbus_softc *sc = device_get_softc(vmbus_dev); + UINT64 start, end; + + switch (res->Type) { + case ACPI_RESOURCE_TYPE_ADDRESS32: + start = res->Data.Address32.Address.Minimum; + end = res->Data.Address32.Address.Maximum; + break; + + case ACPI_RESOURCE_TYPE_ADDRESS64: + start = res->Data.Address64.Address.Minimum; + end = res->Data.Address64.Address.Maximum; + break; + + default: + /* Unused types. */ + return (AE_OK); + } + + /* + * We don't use <1MB addresses. + */ + if (end < 0x100000) + return (AE_OK); + + /* Don't conflict with vTPM. */ + if (end >= VTPM_BASE_ADDR && start < VTPM_BASE_ADDR) + end = VTPM_BASE_ADDR - 1; + + if ((pc->pass == parse_32 && start < FOUR_GB) || + (pc->pass == parse_64 && start >= FOUR_GB)) + pcib_host_res_decodes(&sc->vmbus_mmio_res, SYS_RES_MEMORY, + start, end, 0); + + return (AE_OK); +} + +static void +vmbus_get_crs(device_t dev, device_t vmbus_dev, enum parse_pass pass) +{ + struct parse_context pc; + ACPI_STATUS status; + + if (bootverbose) + device_printf(dev, "walking _CRS, pass=%d\n", pass); + + pc.vmbus_dev = vmbus_dev; + pc.pass = pass; + status = AcpiWalkResources(acpi_get_handle(dev), "_CRS", + parse_crs, &pc); + + if (bootverbose && ACPI_FAILURE(status)) + device_printf(dev, "_CRS: not found, pass=%d\n", pass); +} + +static void +vmbus_get_mmio_res_pass(device_t dev, enum parse_pass pass) +{ + device_t acpi0, pcib0 = NULL; + device_t *children; + int i, count; + + /* Try to find _CRS on VMBus device */ + vmbus_get_crs(dev, dev, pass); + + /* Try to find _CRS on VMBus device's parent */ + acpi0 = device_get_parent(dev); + vmbus_get_crs(acpi0, dev, pass); + + /* Try to locate pcib0 and find _CRS on it */ + if (device_get_children(acpi0, &children, &count) != 0) + return; + + for (i = 0; i < count; i++) { + if (!device_is_attached(children[i])) + continue; + + if (strcmp("pcib0", device_get_nameunit(children[i]))) + continue; + + pcib0 = children[i]; + break; + } + + if (pcib0) + vmbus_get_crs(pcib0, dev, pass); + + free(children, M_TEMP); +} + +static void +vmbus_get_mmio_res(device_t dev) +{ + struct vmbus_softc *sc = device_get_softc(dev); + /* + * We walk the resources twice to make sure that: in the resource + * list, the 32-bit resources appear behind the 64-bit resources. + * NB: resource_list_add() uses INSERT_TAIL. This way, when we + * iterate through the list to find a range for a 64-bit BAR in + * vmbus_alloc_resource(), we can make sure we try to use >4GB + * ranges first. + */ + pcib_host_res_init(dev, &sc->vmbus_mmio_res); + + vmbus_get_mmio_res_pass(dev, parse_64); + vmbus_get_mmio_res_pass(dev, parse_32); +} + +static void +vmbus_free_mmio_res(device_t dev) +{ + struct vmbus_softc *sc = device_get_softc(dev); + + pcib_host_res_free(dev, &sc->vmbus_mmio_res); +} + static int vmbus_probe(device_t dev) { char *id[] = { "VMBUS", NULL }; if (ACPI_ID_PROBE(device_get_parent(dev), dev, id) == NULL || device_get_unit(dev) != 0 || vm_guest != VM_GUEST_HV || (hyperv_features & CPUID_HV_MSR_SYNIC) == 0) return (ENXIO); device_set_desc(dev, "Hyper-V Vmbus"); return (BUS_PROBE_DEFAULT); } /** * @brief Main vmbus driver initialization routine. * * Here, we * - initialize the vmbus driver context * - setup various driver entry points * - invoke the vmbus hv main init routine * - get the irq resource * - invoke the vmbus to add the vmbus root device * - setup the vmbus root device * - retrieve the channel offers */ static int vmbus_doattach(struct vmbus_softc *sc) { struct sysctl_oid_list *child; struct sysctl_ctx_list *ctx; int ret; if (sc->vmbus_flags & VMBUS_FLAG_ATTACHED) return (0); + + vmbus_get_mmio_res(sc->vmbus_dev); + sc->vmbus_flags |= VMBUS_FLAG_ATTACHED; sc->vmbus_gpadl = VMBUS_GPADL_START; mtx_init(&sc->vmbus_prichan_lock, "vmbus prichan", NULL, MTX_DEF); TAILQ_INIT(&sc->vmbus_prichans); mtx_init(&sc->vmbus_chan_lock, "vmbus channel", NULL, MTX_DEF); TAILQ_INIT(&sc->vmbus_chans); sc->vmbus_chmap = malloc( sizeof(struct vmbus_channel *) * VMBUS_CHAN_MAX, M_DEVBUF, M_WAITOK | M_ZERO); /* * Create context for "post message" Hypercalls */ sc->vmbus_xc = vmbus_xact_ctx_create(bus_get_dma_tag(sc->vmbus_dev), HYPERCALL_POSTMSGIN_SIZE, VMBUS_MSG_SIZE, sizeof(struct vmbus_msghc)); if (sc->vmbus_xc == NULL) { ret = ENXIO; goto cleanup; } /* * Allocate DMA stuffs. */ ret = vmbus_dma_alloc(sc); if (ret != 0) goto cleanup; /* * Setup interrupt. */ ret = vmbus_intr_setup(sc); if (ret != 0) goto cleanup; /* * Setup SynIC. */ if (bootverbose) device_printf(sc->vmbus_dev, "smp_started = %d\n", smp_started); smp_rendezvous(NULL, vmbus_synic_setup, NULL, sc); sc->vmbus_flags |= VMBUS_FLAG_SYNIC; /* * Initialize vmbus, e.g. connect to Hypervisor. */ ret = vmbus_init(sc); if (ret != 0) goto cleanup; if (sc->vmbus_version == VMBUS_VERSION_WS2008 || sc->vmbus_version == VMBUS_VERSION_WIN7) sc->vmbus_event_proc = vmbus_event_proc_compat; else sc->vmbus_event_proc = vmbus_event_proc; ret = vmbus_scan(sc); if (ret != 0) goto cleanup; ctx = device_get_sysctl_ctx(sc->vmbus_dev); child = SYSCTL_CHILDREN(device_get_sysctl_tree(sc->vmbus_dev)); SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "version", CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, sc, 0, vmbus_sysctl_version, "A", "vmbus version"); return (ret); cleanup: vmbus_scan_teardown(sc); vmbus_intr_teardown(sc); vmbus_dma_free(sc); if (sc->vmbus_xc != NULL) { vmbus_xact_ctx_destroy(sc->vmbus_xc); sc->vmbus_xc = NULL; } free(sc->vmbus_chmap, M_DEVBUF); mtx_destroy(&sc->vmbus_prichan_lock); mtx_destroy(&sc->vmbus_chan_lock); return (ret); } static void vmbus_event_proc_dummy(struct vmbus_softc *sc __unused, int cpu __unused) { } static int vmbus_attach(device_t dev) { vmbus_sc = device_get_softc(dev); vmbus_sc->vmbus_dev = dev; vmbus_sc->vmbus_idtvec = -1; /* * Event processing logic will be configured: * - After the vmbus protocol version negotiation. * - Before we request channel offers. */ vmbus_sc->vmbus_event_proc = vmbus_event_proc_dummy; #ifndef EARLY_AP_STARTUP /* * If the system has already booted and thread * scheduling is possible indicated by the global * cold set to zero, we just call the driver * initialization directly. */ if (!cold) #endif vmbus_doattach(vmbus_sc); return (0); } static int vmbus_detach(device_t dev) { struct vmbus_softc *sc = device_get_softc(dev); bus_generic_detach(dev); vmbus_chan_destroy_all(sc); vmbus_scan_teardown(sc); vmbus_disconnect(sc); if (sc->vmbus_flags & VMBUS_FLAG_SYNIC) { sc->vmbus_flags &= ~VMBUS_FLAG_SYNIC; smp_rendezvous(NULL, vmbus_synic_teardown, NULL, NULL); } vmbus_intr_teardown(sc); vmbus_dma_free(sc); if (sc->vmbus_xc != NULL) { vmbus_xact_ctx_destroy(sc->vmbus_xc); sc->vmbus_xc = NULL; } free(sc->vmbus_chmap, M_DEVBUF); mtx_destroy(&sc->vmbus_prichan_lock); mtx_destroy(&sc->vmbus_chan_lock); + + vmbus_free_mmio_res(dev); return (0); } #ifndef EARLY_AP_STARTUP static void vmbus_sysinit(void *arg __unused) { struct vmbus_softc *sc = vmbus_get_softc(); if (vm_guest != VM_GUEST_HV || sc == NULL) return; /* * If the system has already booted and thread * scheduling is possible, as indicated by the * global cold set to zero, we just call the driver * initialization directly. */ if (!cold) vmbus_doattach(sc); } /* * NOTE: * We have to start as the last step of SI_SUB_SMP, i.e. after SMP is * initialized. */ SYSINIT(vmbus_initialize, SI_SUB_SMP, SI_ORDER_ANY, vmbus_sysinit, NULL); #endif /* !EARLY_AP_STARTUP */ Index: head/sys/dev/hyperv/vmbus/vmbus_var.h =================================================================== --- head/sys/dev/hyperv/vmbus/vmbus_var.h (revision 308723) +++ head/sys/dev/hyperv/vmbus/vmbus_var.h (revision 308724) @@ -1,155 +1,165 @@ /*- * Copyright (c) 2016 Microsoft Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice unmodified, this list of conditions, and the following * disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * $FreeBSD$ */ #ifndef _VMBUS_VAR_H_ #define _VMBUS_VAR_H_ #include #include +#include #include +#include +#include /* * NOTE: DO NOT CHANGE THIS. */ #define VMBUS_SINT_MESSAGE 2 /* * NOTE: * - DO NOT set it to the same value as VMBUS_SINT_MESSAGE. * - DO NOT set it to 0. */ #define VMBUS_SINT_TIMER 4 /* * NOTE: DO NOT CHANGE THESE */ #define VMBUS_CONNID_MESSAGE 1 #define VMBUS_CONNID_EVENT 2 struct vmbus_message; struct vmbus_softc; typedef void (*vmbus_chanmsg_proc_t)(struct vmbus_softc *, const struct vmbus_message *); #define VMBUS_CHANMSG_PROC(name, func) \ [VMBUS_CHANMSG_TYPE_##name] = func #define VMBUS_CHANMSG_PROC_WAKEUP(name) \ VMBUS_CHANMSG_PROC(name, vmbus_msghc_wakeup) struct vmbus_pcpu_data { u_long *intr_cnt; /* Hyper-V interrupt counter */ struct vmbus_message *message; /* shared messages */ uint32_t vcpuid; /* virtual cpuid */ int event_flags_cnt;/* # of event flags */ struct vmbus_evtflags *event_flags; /* event flags from host */ /* Rarely used fields */ struct hyperv_dma message_dma; /* busdma glue */ struct hyperv_dma event_flags_dma;/* busdma glue */ struct taskqueue *event_tq; /* event taskq */ struct taskqueue *message_tq; /* message taskq */ struct task message_task; /* message task */ } __aligned(CACHE_LINE_SIZE); +#if __FreeBSD_version < 1100000 +typedef u_long rman_res_t; +#endif + struct vmbus_softc { void (*vmbus_event_proc)(struct vmbus_softc *, int); u_long *vmbus_tx_evtflags; /* event flags to host */ struct vmbus_mnf *vmbus_mnf2; /* monitored by host */ u_long *vmbus_rx_evtflags; /* compat evtflgs from host */ struct vmbus_channel **vmbus_chmap; struct vmbus_xact_ctx *vmbus_xc; struct vmbus_pcpu_data vmbus_pcpu[MAXCPU]; /* * Rarely used fields */ device_t vmbus_dev; int vmbus_idtvec; uint32_t vmbus_flags; /* see VMBUS_FLAG_ */ uint32_t vmbus_version; uint32_t vmbus_gpadl; /* Shared memory for vmbus_{rx,tx}_evtflags */ void *vmbus_evtflags; struct hyperv_dma vmbus_evtflags_dma; void *vmbus_mnf1; /* monitored by VM, unused */ struct hyperv_dma vmbus_mnf1_dma; struct hyperv_dma vmbus_mnf2_dma; bool vmbus_scandone; struct task vmbus_scandone_task; struct taskqueue *vmbus_devtq; /* for dev attach/detach */ struct taskqueue *vmbus_subchtq; /* for sub-chan attach/detach */ /* Primary channels */ struct mtx vmbus_prichan_lock; TAILQ_HEAD(, vmbus_channel) vmbus_prichans; /* Complete channel list */ struct mtx vmbus_chan_lock; TAILQ_HEAD(, vmbus_channel) vmbus_chans; + + /* The list of usable MMIO ranges for PCIe pass-through */ + struct pcib_host_resources vmbus_mmio_res; }; #define VMBUS_FLAG_ATTACHED 0x0001 /* vmbus was attached */ #define VMBUS_FLAG_SYNIC 0x0002 /* SynIC was setup */ #define VMBUS_PCPU_GET(sc, field, cpu) (sc)->vmbus_pcpu[(cpu)].field #define VMBUS_PCPU_PTR(sc, field, cpu) &(sc)->vmbus_pcpu[(cpu)].field struct vmbus_channel; struct trapframe; struct vmbus_message; struct vmbus_msghc; void vmbus_handle_intr(struct trapframe *); int vmbus_add_child(struct vmbus_channel *); int vmbus_delete_child(struct vmbus_channel *); void vmbus_et_intr(struct trapframe *); uint32_t vmbus_gpadl_alloc(struct vmbus_softc *); struct vmbus_msghc * vmbus_msghc_get(struct vmbus_softc *, size_t); void vmbus_msghc_put(struct vmbus_softc *, struct vmbus_msghc *); void *vmbus_msghc_dataptr(struct vmbus_msghc *); int vmbus_msghc_exec_noresult(struct vmbus_msghc *); int vmbus_msghc_exec(struct vmbus_softc *, struct vmbus_msghc *); const struct vmbus_message * vmbus_msghc_wait_result(struct vmbus_softc *, struct vmbus_msghc *); void vmbus_msghc_wakeup(struct vmbus_softc *, const struct vmbus_message *); void vmbus_msghc_reset(struct vmbus_msghc *, size_t); #endif /* !_VMBUS_VAR_H_ */