hyperv/vmbus: Merge hv_channel_mgmt.c into hv_channel.c
MFC after: 1 week Sponsored by: Microsoft OSTC Differential Revision: https://reviews.freebsd.org/D7126
This commit is contained in:
Sepherosa Ziehau
parent
c93042724e
commit
7d590c7345
@ -271,7 +271,6 @@ dev/hyperv/utilities/hv_shutdown.c optional hyperv
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dev/hyperv/utilities/hv_timesync.c optional hyperv
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dev/hyperv/utilities/hv_util.c optional hyperv
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dev/hyperv/vmbus/hv_channel.c optional hyperv
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dev/hyperv/vmbus/hv_channel_mgmt.c optional hyperv
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dev/hyperv/vmbus/hv_ring_buffer.c optional hyperv
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dev/hyperv/vmbus/hyperv.c optional hyperv
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dev/hyperv/vmbus/hyperv_busdma.c optional hyperv
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@ -247,7 +247,6 @@ dev/hyperv/utilities/hv_shutdown.c optional hyperv
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dev/hyperv/utilities/hv_timesync.c optional hyperv
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dev/hyperv/utilities/hv_util.c optional hyperv
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dev/hyperv/vmbus/hv_channel.c optional hyperv
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dev/hyperv/vmbus/hv_channel_mgmt.c optional hyperv
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dev/hyperv/vmbus/hv_ring_buffer.c optional hyperv
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dev/hyperv/vmbus/hyperv.c optional hyperv
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dev/hyperv/vmbus/hyperv_busdma.c optional hyperv
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@ -53,8 +53,28 @@ __FBSDID("$FreeBSD$");
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static void vmbus_chan_send_event(hv_vmbus_channel* channel);
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static void vmbus_chan_update_evtflagcnt(struct vmbus_softc *,
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const struct hv_vmbus_channel *);
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static void vmbus_chan_task(void *, int);
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static void vmbus_chan_task_nobatch(void *, int);
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static void vmbus_chan_detach_task(void *, int);
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static void vmbus_chan_msgproc_choffer(struct vmbus_softc *,
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const struct vmbus_message *);
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static void vmbus_chan_msgproc_chrescind(struct vmbus_softc *,
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const struct vmbus_message *);
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/*
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* Vmbus channel message processing.
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*/
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static const vmbus_chanmsg_proc_t
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vmbus_chan_msgprocs[VMBUS_CHANMSG_TYPE_MAX] = {
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VMBUS_CHANMSG_PROC(CHOFFER, vmbus_chan_msgproc_choffer),
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VMBUS_CHANMSG_PROC(CHRESCIND, vmbus_chan_msgproc_chrescind),
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VMBUS_CHANMSG_PROC_WAKEUP(CHOPEN_RESP),
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VMBUS_CHANMSG_PROC_WAKEUP(GPADL_CONNRESP),
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VMBUS_CHANMSG_PROC_WAKEUP(GPADL_DISCONNRESP)
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};
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/**
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* @brief Trigger an event notification on the specified channel
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@ -984,3 +1004,463 @@ vmbus_chan_update_evtflagcnt(struct vmbus_softc *sc,
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}
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}
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}
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static struct hv_vmbus_channel *
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vmbus_chan_alloc(struct vmbus_softc *sc)
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{
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struct hv_vmbus_channel *chan;
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chan = malloc(sizeof(*chan), M_DEVBUF, M_WAITOK | M_ZERO);
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chan->ch_monprm = hyperv_dmamem_alloc(bus_get_dma_tag(sc->vmbus_dev),
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HYPERCALL_PARAM_ALIGN, 0, sizeof(struct hyperv_mon_param),
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&chan->ch_monprm_dma, BUS_DMA_WAITOK | BUS_DMA_ZERO);
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if (chan->ch_monprm == NULL) {
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device_printf(sc->vmbus_dev, "monprm alloc failed\n");
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free(chan, M_DEVBUF);
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return NULL;
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}
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chan->vmbus_sc = sc;
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mtx_init(&chan->ch_subchan_lock, "vmbus subchan", NULL, MTX_DEF);
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TAILQ_INIT(&chan->ch_subchans);
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TASK_INIT(&chan->ch_detach_task, 0, vmbus_chan_detach_task, chan);
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return chan;
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}
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static void
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vmbus_chan_free(struct hv_vmbus_channel *chan)
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{
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/* TODO: assert sub-channel list is empty */
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/* TODO: asset no longer on the primary channel's sub-channel list */
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/* TODO: asset no longer on the vmbus channel list */
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hyperv_dmamem_free(&chan->ch_monprm_dma, chan->ch_monprm);
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mtx_destroy(&chan->ch_subchan_lock);
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free(chan, M_DEVBUF);
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}
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static int
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vmbus_chan_add(struct hv_vmbus_channel *newchan)
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{
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struct vmbus_softc *sc = newchan->vmbus_sc;
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struct hv_vmbus_channel *prichan;
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if (newchan->ch_id == 0) {
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/*
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* XXX
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* Chan0 will neither be processed nor should be offered;
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* skip it.
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*/
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device_printf(sc->vmbus_dev, "got chan0 offer, discard\n");
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return EINVAL;
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} else if (newchan->ch_id >= VMBUS_CHAN_MAX) {
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device_printf(sc->vmbus_dev, "invalid chan%u offer\n",
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newchan->ch_id);
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return EINVAL;
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}
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sc->vmbus_chmap[newchan->ch_id] = newchan;
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if (bootverbose) {
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device_printf(sc->vmbus_dev, "chan%u subidx%u offer\n",
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newchan->ch_id, newchan->ch_subidx);
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}
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mtx_lock(&sc->vmbus_prichan_lock);
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TAILQ_FOREACH(prichan, &sc->vmbus_prichans, ch_prilink) {
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/*
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* Sub-channel will have the same type GUID and instance
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* GUID as its primary channel.
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*/
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if (memcmp(&prichan->ch_guid_type, &newchan->ch_guid_type,
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sizeof(struct hyperv_guid)) == 0 &&
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memcmp(&prichan->ch_guid_inst, &newchan->ch_guid_inst,
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sizeof(struct hyperv_guid)) == 0)
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break;
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}
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if (VMBUS_CHAN_ISPRIMARY(newchan)) {
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if (prichan == NULL) {
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/* Install the new primary channel */
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TAILQ_INSERT_TAIL(&sc->vmbus_prichans, newchan,
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ch_prilink);
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mtx_unlock(&sc->vmbus_prichan_lock);
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return 0;
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} else {
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mtx_unlock(&sc->vmbus_prichan_lock);
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device_printf(sc->vmbus_dev, "duplicated primary "
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"chan%u\n", newchan->ch_id);
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return EINVAL;
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}
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} else { /* Sub-channel */
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if (prichan == NULL) {
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mtx_unlock(&sc->vmbus_prichan_lock);
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device_printf(sc->vmbus_dev, "no primary chan for "
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"chan%u\n", newchan->ch_id);
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return EINVAL;
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}
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/*
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* Found the primary channel for this sub-channel and
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* move on.
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*
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* XXX refcnt prichan
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*/
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}
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mtx_unlock(&sc->vmbus_prichan_lock);
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/*
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* This is a sub-channel; link it with the primary channel.
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*/
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KASSERT(!VMBUS_CHAN_ISPRIMARY(newchan),
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("new channel is not sub-channel"));
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KASSERT(prichan != NULL, ("no primary channel"));
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newchan->ch_prichan = prichan;
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newchan->ch_dev = prichan->ch_dev;
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mtx_lock(&prichan->ch_subchan_lock);
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TAILQ_INSERT_TAIL(&prichan->ch_subchans, newchan, ch_sublink);
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/*
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* Bump up sub-channel count and notify anyone that is
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* interested in this sub-channel, after this sub-channel
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* is setup.
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*/
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prichan->ch_subchan_cnt++;
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mtx_unlock(&prichan->ch_subchan_lock);
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wakeup(prichan);
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return 0;
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}
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void
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vmbus_channel_cpu_set(struct hv_vmbus_channel *chan, int cpu)
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{
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KASSERT(cpu >= 0 && cpu < mp_ncpus, ("invalid cpu %d", cpu));
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if (chan->vmbus_sc->vmbus_version == VMBUS_VERSION_WS2008 ||
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chan->vmbus_sc->vmbus_version == VMBUS_VERSION_WIN7) {
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/* Only cpu0 is supported */
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cpu = 0;
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}
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chan->target_cpu = cpu;
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chan->target_vcpu = VMBUS_PCPU_GET(chan->vmbus_sc, vcpuid, cpu);
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if (bootverbose) {
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printf("vmbus_chan%u: assigned to cpu%u [vcpu%u]\n",
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chan->ch_id,
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chan->target_cpu, chan->target_vcpu);
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}
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}
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void
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vmbus_channel_cpu_rr(struct hv_vmbus_channel *chan)
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{
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static uint32_t vmbus_chan_nextcpu;
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int cpu;
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cpu = atomic_fetchadd_int(&vmbus_chan_nextcpu, 1) % mp_ncpus;
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vmbus_channel_cpu_set(chan, cpu);
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}
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static void
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vmbus_chan_cpu_default(struct hv_vmbus_channel *chan)
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{
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/*
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* By default, pin the channel to cpu0. Devices having
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* special channel-cpu mapping requirement should call
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* vmbus_channel_cpu_{set,rr}().
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*/
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vmbus_channel_cpu_set(chan, 0);
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}
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static void
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vmbus_chan_msgproc_choffer(struct vmbus_softc *sc,
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const struct vmbus_message *msg)
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{
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const struct vmbus_chanmsg_choffer *offer;
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struct hv_vmbus_channel *chan;
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int error;
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offer = (const struct vmbus_chanmsg_choffer *)msg->msg_data;
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chan = vmbus_chan_alloc(sc);
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if (chan == NULL) {
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device_printf(sc->vmbus_dev, "allocate chan%u failed\n",
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offer->chm_chanid);
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return;
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}
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chan->ch_id = offer->chm_chanid;
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chan->ch_subidx = offer->chm_subidx;
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chan->ch_guid_type = offer->chm_chtype;
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chan->ch_guid_inst = offer->chm_chinst;
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/* Batch reading is on by default */
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chan->ch_flags |= VMBUS_CHAN_FLAG_BATCHREAD;
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chan->ch_monprm->mp_connid = VMBUS_CONNID_EVENT;
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if (sc->vmbus_version != VMBUS_VERSION_WS2008)
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chan->ch_monprm->mp_connid = offer->chm_connid;
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if (offer->chm_flags1 & VMBUS_CHOFFER_FLAG1_HASMNF) {
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/*
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* Setup MNF stuffs.
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*/
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chan->ch_flags |= VMBUS_CHAN_FLAG_HASMNF;
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chan->ch_montrig_idx = offer->chm_montrig / VMBUS_MONTRIG_LEN;
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if (chan->ch_montrig_idx >= VMBUS_MONTRIGS_MAX)
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panic("invalid monitor trigger %u", offer->chm_montrig);
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chan->ch_montrig_mask =
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1 << (offer->chm_montrig % VMBUS_MONTRIG_LEN);
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}
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/* Select default cpu for this channel. */
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vmbus_chan_cpu_default(chan);
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error = vmbus_chan_add(chan);
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if (error) {
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device_printf(sc->vmbus_dev, "add chan%u failed: %d\n",
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chan->ch_id, error);
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vmbus_chan_free(chan);
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return;
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}
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if (VMBUS_CHAN_ISPRIMARY(chan)) {
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/*
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* Add device for this primary channel.
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*
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* NOTE:
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* Error is ignored here; don't have much to do if error
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* really happens.
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*/
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hv_vmbus_child_device_register(chan);
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}
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}
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/*
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* XXX pretty broken; need rework.
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*/
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static void
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vmbus_chan_msgproc_chrescind(struct vmbus_softc *sc,
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const struct vmbus_message *msg)
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{
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const struct vmbus_chanmsg_chrescind *note;
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struct hv_vmbus_channel *chan;
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note = (const struct vmbus_chanmsg_chrescind *)msg->msg_data;
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if (note->chm_chanid > VMBUS_CHAN_MAX) {
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device_printf(sc->vmbus_dev, "invalid rescinded chan%u\n",
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note->chm_chanid);
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return;
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}
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if (bootverbose) {
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device_printf(sc->vmbus_dev, "chan%u rescinded\n",
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note->chm_chanid);
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}
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chan = sc->vmbus_chmap[note->chm_chanid];
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if (chan == NULL)
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return;
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sc->vmbus_chmap[note->chm_chanid] = NULL;
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taskqueue_enqueue(taskqueue_thread, &chan->ch_detach_task);
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}
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static void
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vmbus_chan_detach_task(void *xchan, int pending __unused)
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{
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struct hv_vmbus_channel *chan = xchan;
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if (VMBUS_CHAN_ISPRIMARY(chan)) {
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/* Only primary channel owns the device */
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hv_vmbus_child_device_unregister(chan);
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/* NOTE: DO NOT free primary channel for now */
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} else {
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struct vmbus_softc *sc = chan->vmbus_sc;
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struct hv_vmbus_channel *pri_chan = chan->ch_prichan;
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struct vmbus_chanmsg_chfree *req;
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struct vmbus_msghc *mh;
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int error;
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mh = vmbus_msghc_get(sc, sizeof(*req));
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if (mh == NULL) {
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device_printf(sc->vmbus_dev,
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"can not get msg hypercall for chfree(chan%u)\n",
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chan->ch_id);
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goto remove;
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}
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req = vmbus_msghc_dataptr(mh);
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req->chm_hdr.chm_type = VMBUS_CHANMSG_TYPE_CHFREE;
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req->chm_chanid = chan->ch_id;
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error = vmbus_msghc_exec_noresult(mh);
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vmbus_msghc_put(sc, mh);
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if (error) {
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device_printf(sc->vmbus_dev,
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"chfree(chan%u) failed: %d",
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chan->ch_id, error);
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/* NOTE: Move on! */
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} else {
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if (bootverbose) {
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device_printf(sc->vmbus_dev, "chan%u freed\n",
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chan->ch_id);
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}
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}
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remove:
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mtx_lock(&pri_chan->ch_subchan_lock);
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TAILQ_REMOVE(&pri_chan->ch_subchans, chan, ch_sublink);
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KASSERT(pri_chan->ch_subchan_cnt > 0,
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("invalid subchan_cnt %d", pri_chan->ch_subchan_cnt));
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pri_chan->ch_subchan_cnt--;
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mtx_unlock(&pri_chan->ch_subchan_lock);
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wakeup(pri_chan);
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vmbus_chan_free(chan);
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}
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}
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/*
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* Detach all devices and destroy the corresponding primary channels.
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*/
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void
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vmbus_chan_destroy_all(struct vmbus_softc *sc)
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{
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struct hv_vmbus_channel *chan;
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mtx_lock(&sc->vmbus_prichan_lock);
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while ((chan = TAILQ_FIRST(&sc->vmbus_prichans)) != NULL) {
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KASSERT(VMBUS_CHAN_ISPRIMARY(chan), ("not primary channel"));
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TAILQ_REMOVE(&sc->vmbus_prichans, chan, ch_prilink);
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mtx_unlock(&sc->vmbus_prichan_lock);
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hv_vmbus_child_device_unregister(chan);
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vmbus_chan_free(chan);
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mtx_lock(&sc->vmbus_prichan_lock);
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}
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bzero(sc->vmbus_chmap,
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sizeof(struct hv_vmbus_channel *) * VMBUS_CHAN_MAX);
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mtx_unlock(&sc->vmbus_prichan_lock);
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}
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/**
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* @brief Select the best outgoing channel
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*
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* The channel whose vcpu binding is closest to the currect vcpu will
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* be selected.
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* If no multi-channel, always select primary channel
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*
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* @param primary - primary channel
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*/
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struct hv_vmbus_channel *
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vmbus_select_outgoing_channel(struct hv_vmbus_channel *primary)
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{
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hv_vmbus_channel *new_channel = NULL;
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hv_vmbus_channel *outgoing_channel = primary;
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int old_cpu_distance = 0;
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int new_cpu_distance = 0;
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int cur_vcpu = 0;
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int smp_pro_id = PCPU_GET(cpuid);
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if (TAILQ_EMPTY(&primary->ch_subchans)) {
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return outgoing_channel;
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}
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if (smp_pro_id >= MAXCPU) {
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return outgoing_channel;
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}
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cur_vcpu = VMBUS_PCPU_GET(primary->vmbus_sc, vcpuid, smp_pro_id);
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/* XXX need lock */
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TAILQ_FOREACH(new_channel, &primary->ch_subchans, ch_sublink) {
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if ((new_channel->ch_stflags & VMBUS_CHAN_ST_OPENED) == 0) {
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continue;
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}
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if (new_channel->target_vcpu == cur_vcpu){
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return new_channel;
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}
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old_cpu_distance = ((outgoing_channel->target_vcpu > cur_vcpu) ?
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(outgoing_channel->target_vcpu - cur_vcpu) :
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(cur_vcpu - outgoing_channel->target_vcpu));
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new_cpu_distance = ((new_channel->target_vcpu > cur_vcpu) ?
|
||||
(new_channel->target_vcpu - cur_vcpu) :
|
||||
(cur_vcpu - new_channel->target_vcpu));
|
||||
|
||||
if (old_cpu_distance < new_cpu_distance) {
|
||||
continue;
|
||||
}
|
||||
|
||||
outgoing_channel = new_channel;
|
||||
}
|
||||
|
||||
return(outgoing_channel);
|
||||
}
|
||||
|
||||
struct hv_vmbus_channel **
|
||||
vmbus_get_subchan(struct hv_vmbus_channel *pri_chan, int subchan_cnt)
|
||||
{
|
||||
struct hv_vmbus_channel **ret, *chan;
|
||||
int i;
|
||||
|
||||
ret = malloc(subchan_cnt * sizeof(struct hv_vmbus_channel *), M_TEMP,
|
||||
M_WAITOK);
|
||||
|
||||
mtx_lock(&pri_chan->ch_subchan_lock);
|
||||
|
||||
while (pri_chan->ch_subchan_cnt < subchan_cnt)
|
||||
mtx_sleep(pri_chan, &pri_chan->ch_subchan_lock, 0, "subch", 0);
|
||||
|
||||
i = 0;
|
||||
TAILQ_FOREACH(chan, &pri_chan->ch_subchans, ch_sublink) {
|
||||
/* TODO: refcnt chan */
|
||||
ret[i] = chan;
|
||||
|
||||
++i;
|
||||
if (i == subchan_cnt)
|
||||
break;
|
||||
}
|
||||
KASSERT(i == subchan_cnt, ("invalid subchan count %d, should be %d",
|
||||
pri_chan->ch_subchan_cnt, subchan_cnt));
|
||||
|
||||
mtx_unlock(&pri_chan->ch_subchan_lock);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
void
|
||||
vmbus_rel_subchan(struct hv_vmbus_channel **subchan, int subchan_cnt __unused)
|
||||
{
|
||||
|
||||
free(subchan, M_TEMP);
|
||||
}
|
||||
|
||||
void
|
||||
vmbus_drain_subchan(struct hv_vmbus_channel *pri_chan)
|
||||
{
|
||||
mtx_lock(&pri_chan->ch_subchan_lock);
|
||||
while (pri_chan->ch_subchan_cnt > 0)
|
||||
mtx_sleep(pri_chan, &pri_chan->ch_subchan_lock, 0, "dsubch", 0);
|
||||
mtx_unlock(&pri_chan->ch_subchan_lock);
|
||||
}
|
||||
|
||||
void
|
||||
vmbus_chan_msgproc(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;
|
||||
KASSERT(msg_type < VMBUS_CHANMSG_TYPE_MAX,
|
||||
("invalid message type %u", msg_type));
|
||||
|
||||
msg_proc = vmbus_chan_msgprocs[msg_type];
|
||||
if (msg_proc != NULL)
|
||||
msg_proc(sc, msg);
|
||||
}
|
||||
|
||||
@ -1,518 +0,0 @@
|
||||
/*-
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/kernel.h>
|
||||
#include <sys/lock.h>
|
||||
#include <sys/mbuf.h>
|
||||
#include <sys/mutex.h>
|
||||
|
||||
#include <dev/hyperv/include/hyperv_busdma.h>
|
||||
#include <dev/hyperv/vmbus/hv_vmbus_priv.h>
|
||||
#include <dev/hyperv/vmbus/vmbus_reg.h>
|
||||
#include <dev/hyperv/vmbus/vmbus_var.h>
|
||||
|
||||
static void vmbus_chan_detach_task(void *, int);
|
||||
|
||||
static void vmbus_chan_msgproc_choffer(struct vmbus_softc *,
|
||||
const struct vmbus_message *);
|
||||
static void vmbus_chan_msgproc_chrescind(struct vmbus_softc *,
|
||||
const struct vmbus_message *);
|
||||
|
||||
/*
|
||||
* Vmbus channel message processing.
|
||||
*/
|
||||
static const vmbus_chanmsg_proc_t
|
||||
vmbus_chan_msgprocs[VMBUS_CHANMSG_TYPE_MAX] = {
|
||||
VMBUS_CHANMSG_PROC(CHOFFER, vmbus_chan_msgproc_choffer),
|
||||
VMBUS_CHANMSG_PROC(CHRESCIND, vmbus_chan_msgproc_chrescind),
|
||||
|
||||
VMBUS_CHANMSG_PROC_WAKEUP(CHOPEN_RESP),
|
||||
VMBUS_CHANMSG_PROC_WAKEUP(GPADL_CONNRESP),
|
||||
VMBUS_CHANMSG_PROC_WAKEUP(GPADL_DISCONNRESP)
|
||||
};
|
||||
|
||||
static struct hv_vmbus_channel *
|
||||
vmbus_chan_alloc(struct vmbus_softc *sc)
|
||||
{
|
||||
struct hv_vmbus_channel *chan;
|
||||
|
||||
chan = malloc(sizeof(*chan), M_DEVBUF, M_WAITOK | M_ZERO);
|
||||
|
||||
chan->ch_monprm = hyperv_dmamem_alloc(bus_get_dma_tag(sc->vmbus_dev),
|
||||
HYPERCALL_PARAM_ALIGN, 0, sizeof(struct hyperv_mon_param),
|
||||
&chan->ch_monprm_dma, BUS_DMA_WAITOK | BUS_DMA_ZERO);
|
||||
if (chan->ch_monprm == NULL) {
|
||||
device_printf(sc->vmbus_dev, "monprm alloc failed\n");
|
||||
free(chan, M_DEVBUF);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
chan->vmbus_sc = sc;
|
||||
mtx_init(&chan->ch_subchan_lock, "vmbus subchan", NULL, MTX_DEF);
|
||||
TAILQ_INIT(&chan->ch_subchans);
|
||||
TASK_INIT(&chan->ch_detach_task, 0, vmbus_chan_detach_task, chan);
|
||||
|
||||
return chan;
|
||||
}
|
||||
|
||||
static void
|
||||
vmbus_chan_free(struct hv_vmbus_channel *chan)
|
||||
{
|
||||
/* TODO: assert sub-channel list is empty */
|
||||
/* TODO: asset no longer on the primary channel's sub-channel list */
|
||||
/* TODO: asset no longer on the vmbus channel list */
|
||||
hyperv_dmamem_free(&chan->ch_monprm_dma, chan->ch_monprm);
|
||||
mtx_destroy(&chan->ch_subchan_lock);
|
||||
free(chan, M_DEVBUF);
|
||||
}
|
||||
|
||||
static int
|
||||
vmbus_chan_add(struct hv_vmbus_channel *newchan)
|
||||
{
|
||||
struct vmbus_softc *sc = newchan->vmbus_sc;
|
||||
struct hv_vmbus_channel *prichan;
|
||||
|
||||
if (newchan->ch_id == 0) {
|
||||
/*
|
||||
* XXX
|
||||
* Chan0 will neither be processed nor should be offered;
|
||||
* skip it.
|
||||
*/
|
||||
device_printf(sc->vmbus_dev, "got chan0 offer, discard\n");
|
||||
return EINVAL;
|
||||
} else if (newchan->ch_id >= VMBUS_CHAN_MAX) {
|
||||
device_printf(sc->vmbus_dev, "invalid chan%u offer\n",
|
||||
newchan->ch_id);
|
||||
return EINVAL;
|
||||
}
|
||||
sc->vmbus_chmap[newchan->ch_id] = newchan;
|
||||
|
||||
if (bootverbose) {
|
||||
device_printf(sc->vmbus_dev, "chan%u subidx%u offer\n",
|
||||
newchan->ch_id, newchan->ch_subidx);
|
||||
}
|
||||
|
||||
mtx_lock(&sc->vmbus_prichan_lock);
|
||||
TAILQ_FOREACH(prichan, &sc->vmbus_prichans, ch_prilink) {
|
||||
/*
|
||||
* Sub-channel will have the same type GUID and instance
|
||||
* GUID as its primary channel.
|
||||
*/
|
||||
if (memcmp(&prichan->ch_guid_type, &newchan->ch_guid_type,
|
||||
sizeof(struct hyperv_guid)) == 0 &&
|
||||
memcmp(&prichan->ch_guid_inst, &newchan->ch_guid_inst,
|
||||
sizeof(struct hyperv_guid)) == 0)
|
||||
break;
|
||||
}
|
||||
if (VMBUS_CHAN_ISPRIMARY(newchan)) {
|
||||
if (prichan == NULL) {
|
||||
/* Install the new primary channel */
|
||||
TAILQ_INSERT_TAIL(&sc->vmbus_prichans, newchan,
|
||||
ch_prilink);
|
||||
mtx_unlock(&sc->vmbus_prichan_lock);
|
||||
return 0;
|
||||
} else {
|
||||
mtx_unlock(&sc->vmbus_prichan_lock);
|
||||
device_printf(sc->vmbus_dev, "duplicated primary "
|
||||
"chan%u\n", newchan->ch_id);
|
||||
return EINVAL;
|
||||
}
|
||||
} else { /* Sub-channel */
|
||||
if (prichan == NULL) {
|
||||
mtx_unlock(&sc->vmbus_prichan_lock);
|
||||
device_printf(sc->vmbus_dev, "no primary chan for "
|
||||
"chan%u\n", newchan->ch_id);
|
||||
return EINVAL;
|
||||
}
|
||||
/*
|
||||
* Found the primary channel for this sub-channel and
|
||||
* move on.
|
||||
*
|
||||
* XXX refcnt prichan
|
||||
*/
|
||||
}
|
||||
mtx_unlock(&sc->vmbus_prichan_lock);
|
||||
|
||||
/*
|
||||
* This is a sub-channel; link it with the primary channel.
|
||||
*/
|
||||
KASSERT(!VMBUS_CHAN_ISPRIMARY(newchan),
|
||||
("new channel is not sub-channel"));
|
||||
KASSERT(prichan != NULL, ("no primary channel"));
|
||||
|
||||
newchan->ch_prichan = prichan;
|
||||
newchan->ch_dev = prichan->ch_dev;
|
||||
|
||||
mtx_lock(&prichan->ch_subchan_lock);
|
||||
TAILQ_INSERT_TAIL(&prichan->ch_subchans, newchan, ch_sublink);
|
||||
/*
|
||||
* Bump up sub-channel count and notify anyone that is
|
||||
* interested in this sub-channel, after this sub-channel
|
||||
* is setup.
|
||||
*/
|
||||
prichan->ch_subchan_cnt++;
|
||||
mtx_unlock(&prichan->ch_subchan_lock);
|
||||
wakeup(prichan);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void
|
||||
vmbus_channel_cpu_set(struct hv_vmbus_channel *chan, int cpu)
|
||||
{
|
||||
KASSERT(cpu >= 0 && cpu < mp_ncpus, ("invalid cpu %d", cpu));
|
||||
|
||||
if (chan->vmbus_sc->vmbus_version == VMBUS_VERSION_WS2008 ||
|
||||
chan->vmbus_sc->vmbus_version == VMBUS_VERSION_WIN7) {
|
||||
/* Only cpu0 is supported */
|
||||
cpu = 0;
|
||||
}
|
||||
|
||||
chan->target_cpu = cpu;
|
||||
chan->target_vcpu = VMBUS_PCPU_GET(chan->vmbus_sc, vcpuid, cpu);
|
||||
|
||||
if (bootverbose) {
|
||||
printf("vmbus_chan%u: assigned to cpu%u [vcpu%u]\n",
|
||||
chan->ch_id,
|
||||
chan->target_cpu, chan->target_vcpu);
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
vmbus_channel_cpu_rr(struct hv_vmbus_channel *chan)
|
||||
{
|
||||
static uint32_t vmbus_chan_nextcpu;
|
||||
int cpu;
|
||||
|
||||
cpu = atomic_fetchadd_int(&vmbus_chan_nextcpu, 1) % mp_ncpus;
|
||||
vmbus_channel_cpu_set(chan, cpu);
|
||||
}
|
||||
|
||||
static void
|
||||
vmbus_chan_cpu_default(struct hv_vmbus_channel *chan)
|
||||
{
|
||||
/*
|
||||
* By default, pin the channel to cpu0. Devices having
|
||||
* special channel-cpu mapping requirement should call
|
||||
* vmbus_channel_cpu_{set,rr}().
|
||||
*/
|
||||
vmbus_channel_cpu_set(chan, 0);
|
||||
}
|
||||
|
||||
static void
|
||||
vmbus_chan_msgproc_choffer(struct vmbus_softc *sc,
|
||||
const struct vmbus_message *msg)
|
||||
{
|
||||
const struct vmbus_chanmsg_choffer *offer;
|
||||
struct hv_vmbus_channel *chan;
|
||||
int error;
|
||||
|
||||
offer = (const struct vmbus_chanmsg_choffer *)msg->msg_data;
|
||||
|
||||
chan = vmbus_chan_alloc(sc);
|
||||
if (chan == NULL) {
|
||||
device_printf(sc->vmbus_dev, "allocate chan%u failed\n",
|
||||
offer->chm_chanid);
|
||||
return;
|
||||
}
|
||||
|
||||
chan->ch_id = offer->chm_chanid;
|
||||
chan->ch_subidx = offer->chm_subidx;
|
||||
chan->ch_guid_type = offer->chm_chtype;
|
||||
chan->ch_guid_inst = offer->chm_chinst;
|
||||
|
||||
/* Batch reading is on by default */
|
||||
chan->ch_flags |= VMBUS_CHAN_FLAG_BATCHREAD;
|
||||
|
||||
chan->ch_monprm->mp_connid = VMBUS_CONNID_EVENT;
|
||||
if (sc->vmbus_version != VMBUS_VERSION_WS2008)
|
||||
chan->ch_monprm->mp_connid = offer->chm_connid;
|
||||
|
||||
if (offer->chm_flags1 & VMBUS_CHOFFER_FLAG1_HASMNF) {
|
||||
/*
|
||||
* Setup MNF stuffs.
|
||||
*/
|
||||
chan->ch_flags |= VMBUS_CHAN_FLAG_HASMNF;
|
||||
chan->ch_montrig_idx = offer->chm_montrig / VMBUS_MONTRIG_LEN;
|
||||
if (chan->ch_montrig_idx >= VMBUS_MONTRIGS_MAX)
|
||||
panic("invalid monitor trigger %u", offer->chm_montrig);
|
||||
chan->ch_montrig_mask =
|
||||
1 << (offer->chm_montrig % VMBUS_MONTRIG_LEN);
|
||||
}
|
||||
|
||||
/* Select default cpu for this channel. */
|
||||
vmbus_chan_cpu_default(chan);
|
||||
|
||||
error = vmbus_chan_add(chan);
|
||||
if (error) {
|
||||
device_printf(sc->vmbus_dev, "add chan%u failed: %d\n",
|
||||
chan->ch_id, error);
|
||||
vmbus_chan_free(chan);
|
||||
return;
|
||||
}
|
||||
|
||||
if (VMBUS_CHAN_ISPRIMARY(chan)) {
|
||||
/*
|
||||
* Add device for this primary channel.
|
||||
*
|
||||
* NOTE:
|
||||
* Error is ignored here; don't have much to do if error
|
||||
* really happens.
|
||||
*/
|
||||
hv_vmbus_child_device_register(chan);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* XXX pretty broken; need rework.
|
||||
*/
|
||||
static void
|
||||
vmbus_chan_msgproc_chrescind(struct vmbus_softc *sc,
|
||||
const struct vmbus_message *msg)
|
||||
{
|
||||
const struct vmbus_chanmsg_chrescind *note;
|
||||
struct hv_vmbus_channel *chan;
|
||||
|
||||
note = (const struct vmbus_chanmsg_chrescind *)msg->msg_data;
|
||||
if (note->chm_chanid > VMBUS_CHAN_MAX) {
|
||||
device_printf(sc->vmbus_dev, "invalid rescinded chan%u\n",
|
||||
note->chm_chanid);
|
||||
return;
|
||||
}
|
||||
|
||||
if (bootverbose) {
|
||||
device_printf(sc->vmbus_dev, "chan%u rescinded\n",
|
||||
note->chm_chanid);
|
||||
}
|
||||
|
||||
chan = sc->vmbus_chmap[note->chm_chanid];
|
||||
if (chan == NULL)
|
||||
return;
|
||||
sc->vmbus_chmap[note->chm_chanid] = NULL;
|
||||
|
||||
taskqueue_enqueue(taskqueue_thread, &chan->ch_detach_task);
|
||||
}
|
||||
|
||||
static void
|
||||
vmbus_chan_detach_task(void *xchan, int pending __unused)
|
||||
{
|
||||
struct hv_vmbus_channel *chan = xchan;
|
||||
|
||||
if (VMBUS_CHAN_ISPRIMARY(chan)) {
|
||||
/* Only primary channel owns the device */
|
||||
hv_vmbus_child_device_unregister(chan);
|
||||
/* NOTE: DO NOT free primary channel for now */
|
||||
} else {
|
||||
struct vmbus_softc *sc = chan->vmbus_sc;
|
||||
struct hv_vmbus_channel *pri_chan = chan->ch_prichan;
|
||||
struct vmbus_chanmsg_chfree *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 chfree(chan%u)\n",
|
||||
chan->ch_id);
|
||||
goto remove;
|
||||
}
|
||||
|
||||
req = vmbus_msghc_dataptr(mh);
|
||||
req->chm_hdr.chm_type = VMBUS_CHANMSG_TYPE_CHFREE;
|
||||
req->chm_chanid = chan->ch_id;
|
||||
|
||||
error = vmbus_msghc_exec_noresult(mh);
|
||||
vmbus_msghc_put(sc, mh);
|
||||
|
||||
if (error) {
|
||||
device_printf(sc->vmbus_dev,
|
||||
"chfree(chan%u) failed: %d",
|
||||
chan->ch_id, error);
|
||||
/* NOTE: Move on! */
|
||||
} else {
|
||||
if (bootverbose) {
|
||||
device_printf(sc->vmbus_dev, "chan%u freed\n",
|
||||
chan->ch_id);
|
||||
}
|
||||
}
|
||||
remove:
|
||||
mtx_lock(&pri_chan->ch_subchan_lock);
|
||||
TAILQ_REMOVE(&pri_chan->ch_subchans, chan, ch_sublink);
|
||||
KASSERT(pri_chan->ch_subchan_cnt > 0,
|
||||
("invalid subchan_cnt %d", pri_chan->ch_subchan_cnt));
|
||||
pri_chan->ch_subchan_cnt--;
|
||||
mtx_unlock(&pri_chan->ch_subchan_lock);
|
||||
wakeup(pri_chan);
|
||||
|
||||
vmbus_chan_free(chan);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Detach all devices and destroy the corresponding primary channels.
|
||||
*/
|
||||
void
|
||||
vmbus_chan_destroy_all(struct vmbus_softc *sc)
|
||||
{
|
||||
struct hv_vmbus_channel *chan;
|
||||
|
||||
mtx_lock(&sc->vmbus_prichan_lock);
|
||||
while ((chan = TAILQ_FIRST(&sc->vmbus_prichans)) != NULL) {
|
||||
KASSERT(VMBUS_CHAN_ISPRIMARY(chan), ("not primary channel"));
|
||||
TAILQ_REMOVE(&sc->vmbus_prichans, chan, ch_prilink);
|
||||
mtx_unlock(&sc->vmbus_prichan_lock);
|
||||
|
||||
hv_vmbus_child_device_unregister(chan);
|
||||
vmbus_chan_free(chan);
|
||||
|
||||
mtx_lock(&sc->vmbus_prichan_lock);
|
||||
}
|
||||
bzero(sc->vmbus_chmap,
|
||||
sizeof(struct hv_vmbus_channel *) * VMBUS_CHAN_MAX);
|
||||
mtx_unlock(&sc->vmbus_prichan_lock);
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Select the best outgoing channel
|
||||
*
|
||||
* The channel whose vcpu binding is closest to the currect vcpu will
|
||||
* be selected.
|
||||
* If no multi-channel, always select primary channel
|
||||
*
|
||||
* @param primary - primary channel
|
||||
*/
|
||||
struct hv_vmbus_channel *
|
||||
vmbus_select_outgoing_channel(struct hv_vmbus_channel *primary)
|
||||
{
|
||||
hv_vmbus_channel *new_channel = NULL;
|
||||
hv_vmbus_channel *outgoing_channel = primary;
|
||||
int old_cpu_distance = 0;
|
||||
int new_cpu_distance = 0;
|
||||
int cur_vcpu = 0;
|
||||
int smp_pro_id = PCPU_GET(cpuid);
|
||||
|
||||
if (TAILQ_EMPTY(&primary->ch_subchans)) {
|
||||
return outgoing_channel;
|
||||
}
|
||||
|
||||
if (smp_pro_id >= MAXCPU) {
|
||||
return outgoing_channel;
|
||||
}
|
||||
|
||||
cur_vcpu = VMBUS_PCPU_GET(primary->vmbus_sc, vcpuid, smp_pro_id);
|
||||
|
||||
/* XXX need lock */
|
||||
TAILQ_FOREACH(new_channel, &primary->ch_subchans, ch_sublink) {
|
||||
if ((new_channel->ch_stflags & VMBUS_CHAN_ST_OPENED) == 0) {
|
||||
continue;
|
||||
}
|
||||
|
||||
if (new_channel->target_vcpu == cur_vcpu){
|
||||
return new_channel;
|
||||
}
|
||||
|
||||
old_cpu_distance = ((outgoing_channel->target_vcpu > cur_vcpu) ?
|
||||
(outgoing_channel->target_vcpu - cur_vcpu) :
|
||||
(cur_vcpu - outgoing_channel->target_vcpu));
|
||||
|
||||
new_cpu_distance = ((new_channel->target_vcpu > cur_vcpu) ?
|
||||
(new_channel->target_vcpu - cur_vcpu) :
|
||||
(cur_vcpu - new_channel->target_vcpu));
|
||||
|
||||
if (old_cpu_distance < new_cpu_distance) {
|
||||
continue;
|
||||
}
|
||||
|
||||
outgoing_channel = new_channel;
|
||||
}
|
||||
|
||||
return(outgoing_channel);
|
||||
}
|
||||
|
||||
struct hv_vmbus_channel **
|
||||
vmbus_get_subchan(struct hv_vmbus_channel *pri_chan, int subchan_cnt)
|
||||
{
|
||||
struct hv_vmbus_channel **ret, *chan;
|
||||
int i;
|
||||
|
||||
ret = malloc(subchan_cnt * sizeof(struct hv_vmbus_channel *), M_TEMP,
|
||||
M_WAITOK);
|
||||
|
||||
mtx_lock(&pri_chan->ch_subchan_lock);
|
||||
|
||||
while (pri_chan->ch_subchan_cnt < subchan_cnt)
|
||||
mtx_sleep(pri_chan, &pri_chan->ch_subchan_lock, 0, "subch", 0);
|
||||
|
||||
i = 0;
|
||||
TAILQ_FOREACH(chan, &pri_chan->ch_subchans, ch_sublink) {
|
||||
/* TODO: refcnt chan */
|
||||
ret[i] = chan;
|
||||
|
||||
++i;
|
||||
if (i == subchan_cnt)
|
||||
break;
|
||||
}
|
||||
KASSERT(i == subchan_cnt, ("invalid subchan count %d, should be %d",
|
||||
pri_chan->ch_subchan_cnt, subchan_cnt));
|
||||
|
||||
mtx_unlock(&pri_chan->ch_subchan_lock);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
void
|
||||
vmbus_rel_subchan(struct hv_vmbus_channel **subchan, int subchan_cnt __unused)
|
||||
{
|
||||
|
||||
free(subchan, M_TEMP);
|
||||
}
|
||||
|
||||
void
|
||||
vmbus_drain_subchan(struct hv_vmbus_channel *pri_chan)
|
||||
{
|
||||
mtx_lock(&pri_chan->ch_subchan_lock);
|
||||
while (pri_chan->ch_subchan_cnt > 0)
|
||||
mtx_sleep(pri_chan, &pri_chan->ch_subchan_lock, 0, "dsubch", 0);
|
||||
mtx_unlock(&pri_chan->ch_subchan_lock);
|
||||
}
|
||||
|
||||
void
|
||||
vmbus_chan_msgproc(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;
|
||||
KASSERT(msg_type < VMBUS_CHANMSG_TYPE_MAX,
|
||||
("invalid message type %u", msg_type));
|
||||
|
||||
msg_proc = vmbus_chan_msgprocs[msg_type];
|
||||
if (msg_proc != NULL)
|
||||
msg_proc(sc, msg);
|
||||
}
|
||||
@ -5,7 +5,6 @@
|
||||
|
||||
KMOD= hv_vmbus
|
||||
SRCS= hv_channel.c \
|
||||
hv_channel_mgmt.c \
|
||||
hv_ring_buffer.c \
|
||||
hyperv.c \
|
||||
hyperv_busdma.c \
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user