Index: head/sys/dev/hyperv/include/hyperv.h =================================================================== --- head/sys/dev/hyperv/include/hyperv.h (revision 302985) +++ head/sys/dev/hyperv/include/hyperv.h (revision 302986) @@ -1,309 +1,303 @@ /*- * 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. * * $FreeBSD$ */ /** * HyperV definitions for messages that are sent between instances of the * Channel Management Library in separate partitions, or in some cases, * back to itself. */ #ifndef __HYPERV_H__ #define __HYPERV_H__ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include typedef uint8_t hv_bool_uint8_t; #define HV_S_OK 0x00000000 #define HV_E_FAIL 0x80004005 #define HV_ERROR_NOT_SUPPORTED 0x80070032 #define HV_ERROR_MACHINE_LOCKED 0x800704F7 /* * VMBUS version is 32 bit, upper 16 bit for major_number and lower * 16 bit for minor_number. * * 0.13 -- Windows Server 2008 * 1.1 -- Windows 7 * 2.4 -- Windows 8 * 3.0 -- Windows 8.1 */ #define VMBUS_VERSION_WS2008 ((0 << 16) | (13)) #define VMBUS_VERSION_WIN7 ((1 << 16) | (1)) #define VMBUS_VERSION_WIN8 ((2 << 16) | (4)) #define VMBUS_VERSION_WIN8_1 ((3 << 16) | (0)) #define VMBUS_VERSION_MAJOR(ver) (((uint32_t)(ver)) >> 16) #define VMBUS_VERSION_MINOR(ver) (((uint32_t)(ver)) & 0xffff) struct hyperv_guid { uint8_t hv_guid[16]; } __packed; #define HYPERV_GUID_STRLEN 40 int hyperv_guid2str(const struct hyperv_guid *, char *, size_t); #define HW_MACADDR_LEN 6 /* * Common defines for Hyper-V ICs */ #define HV_ICMSGTYPE_NEGOTIATE 0 #define HV_ICMSGTYPE_HEARTBEAT 1 #define HV_ICMSGTYPE_KVPEXCHANGE 2 #define HV_ICMSGTYPE_SHUTDOWN 3 #define HV_ICMSGTYPE_TIMESYNC 4 #define HV_ICMSGTYPE_VSS 5 #define HV_ICMSGHDRFLAG_TRANSACTION 1 #define HV_ICMSGHDRFLAG_REQUEST 2 #define HV_ICMSGHDRFLAG_RESPONSE 4 typedef struct hv_vmbus_pipe_hdr { uint32_t flags; uint32_t msgsize; } __packed hv_vmbus_pipe_hdr; typedef struct hv_vmbus_ic_version { uint16_t major; uint16_t minor; } __packed hv_vmbus_ic_version; typedef struct hv_vmbus_icmsg_hdr { hv_vmbus_ic_version icverframe; uint16_t icmsgtype; hv_vmbus_ic_version icvermsg; uint16_t icmsgsize; uint32_t status; uint8_t ictransaction_id; uint8_t icflags; uint8_t reserved[2]; } __packed hv_vmbus_icmsg_hdr; typedef struct hv_vmbus_icmsg_negotiate { uint16_t icframe_vercnt; uint16_t icmsg_vercnt; uint32_t reserved; hv_vmbus_ic_version icversion_data[1]; /* any size array */ } __packed hv_vmbus_icmsg_negotiate; typedef struct hv_vmbus_shutdown_msg_data { uint32_t reason_code; uint32_t timeout_seconds; uint32_t flags; uint8_t display_message[2048]; } __packed hv_vmbus_shutdown_msg_data; typedef struct hv_vmbus_heartbeat_msg_data { uint64_t seq_num; uint32_t reserved[8]; } __packed hv_vmbus_heartbeat_msg_data; typedef struct { /* * offset in bytes from the start of ring data below */ volatile uint32_t write_index; /* * offset in bytes from the start of ring data below */ volatile uint32_t read_index; /* * NOTE: The interrupt_mask field is used only for channels, but * vmbus connection also uses this data structure */ volatile uint32_t interrupt_mask; /* pad it to PAGE_SIZE so that data starts on a page */ uint8_t reserved[4084]; /* * WARNING: Ring data starts here * !!! DO NOT place any fields below this !!! */ uint8_t buffer[0]; /* doubles as interrupt mask */ } __packed hv_vmbus_ring_buffer; typedef struct { hv_vmbus_ring_buffer* ring_buffer; struct mtx ring_lock; uint32_t ring_data_size; /* ring_size */ } hv_vmbus_ring_buffer_info; typedef void (*vmbus_chan_callback_t)(void *); typedef struct hv_vmbus_channel { device_t ch_dev; struct vmbus_softc *vmbus_sc; uint32_t ch_flags; /* VMBUS_CHAN_FLAG_ */ uint32_t ch_id; /* channel id */ /* * These are based on the offer_msg.monitor_id. * Save it here for easy access. */ int ch_montrig_idx; /* MNF trig index */ uint32_t ch_montrig_mask;/* MNF trig mask */ /* * send to parent */ hv_vmbus_ring_buffer_info outbound; /* * receive from parent */ hv_vmbus_ring_buffer_info inbound; struct taskqueue *ch_tq; struct task ch_task; vmbus_chan_callback_t ch_cb; void *ch_cbarg; struct hyperv_mon_param *ch_monprm; struct hyperv_dma ch_monprm_dma; int ch_cpuid; /* owner cpu */ /* * Virtual cpuid for ch_cpuid; it is used to communicate cpuid * related information w/ Hyper-V. If MSR_HV_VP_INDEX does not * exist, ch_vcpuid will always be 0 for compatibility. */ uint32_t ch_vcpuid; /* * If this is a primary channel, ch_subchan* fields * contain sub-channels belonging to this primary * channel. */ struct mtx ch_subchan_lock; TAILQ_HEAD(, hv_vmbus_channel) ch_subchans; int ch_subchan_cnt; /* If this is a sub-channel */ TAILQ_ENTRY(hv_vmbus_channel) ch_sublink; /* sub-channel link */ struct hv_vmbus_channel *ch_prichan; /* owner primary chan */ /* * Driver private data */ void *hv_chan_priv1; void *hv_chan_priv2; void *hv_chan_priv3; void *ch_bufring; /* TX+RX bufrings */ struct hyperv_dma ch_bufring_dma; uint32_t ch_bufring_gpadl; struct task ch_detach_task; TAILQ_ENTRY(hv_vmbus_channel) ch_prilink; /* primary chan link */ uint32_t ch_subidx; /* subchan index */ volatile uint32_t ch_stflags; /* atomic-op */ /* VMBUS_CHAN_ST_ */ struct hyperv_guid ch_guid_type; struct hyperv_guid ch_guid_inst; struct sysctl_ctx_list ch_sysctl_ctx; } hv_vmbus_channel; #define VMBUS_CHAN_ISPRIMARY(chan) ((chan)->ch_subidx == 0) #define VMBUS_CHAN_FLAG_HASMNF 0x0001 /* * If this flag is set, this channel's interrupt will be masked in ISR, * and the RX bufring will be drained before this channel's interrupt is * unmasked. * * This flag is turned on by default. Drivers can turn it off according * to their own requirement. */ #define VMBUS_CHAN_FLAG_BATCHREAD 0x0002 #define VMBUS_CHAN_ST_OPENED_SHIFT 0 #define VMBUS_CHAN_ST_OPENED (1 << VMBUS_CHAN_ST_OPENED_SHIFT) static inline void hv_set_channel_read_state(hv_vmbus_channel* channel, boolean_t on) { if (!on) channel->ch_flags &= ~VMBUS_CHAN_FLAG_BATCHREAD; else channel->ch_flags |= VMBUS_CHAN_FLAG_BATCHREAD; } -int hv_vmbus_channel_open( - hv_vmbus_channel* channel, - uint32_t send_ring_buffer_size, - uint32_t recv_ring_buffer_size, - void* user_data, - uint32_t user_data_len, - vmbus_chan_callback_t cb, - void *cbarg); - +int hv_vmbus_channel_open(struct hv_vmbus_channel *chan, + int txbr_size, int rxbr_size, const void *udata, int udlen, + vmbus_chan_callback_t cb, void *cbarg); void hv_vmbus_channel_close(hv_vmbus_channel *channel); struct hv_vmbus_channel* vmbus_select_outgoing_channel(struct hv_vmbus_channel *promary); /** * @brief Get physical address from virtual */ static inline unsigned long hv_get_phys_addr(void *virt) { unsigned long ret; ret = (vtophys(virt) | ((vm_offset_t) virt & PAGE_MASK)); return (ret); } static __inline struct hv_vmbus_channel * vmbus_get_channel(device_t dev) { return device_get_ivars(dev); } #endif /* __HYPERV_H__ */ Index: head/sys/dev/hyperv/vmbus/hv_channel.c =================================================================== --- head/sys/dev/hyperv/vmbus/hv_channel.c (revision 302985) +++ head/sys/dev/hyperv/vmbus/hv_channel.c (revision 302986) @@ -1,1391 +1,1370 @@ /*- * 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 __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static void vmbus_chan_send_event(hv_vmbus_channel* channel); static void vmbus_chan_update_evtflagcnt(struct vmbus_softc *, const struct hv_vmbus_channel *); static void vmbus_chan_task(void *, int); static void vmbus_chan_task_nobatch(void *, int); 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) }; /** * @brief Trigger an event notification on the specified channel */ static void vmbus_chan_send_event(hv_vmbus_channel *channel) { struct vmbus_softc *sc = channel->vmbus_sc; uint32_t chanid = channel->ch_id; atomic_set_long(&sc->vmbus_tx_evtflags[chanid >> VMBUS_EVTFLAG_SHIFT], 1UL << (chanid & VMBUS_EVTFLAG_MASK)); if (channel->ch_flags & VMBUS_CHAN_FLAG_HASMNF) { atomic_set_int( &sc->vmbus_mnf2->mnf_trigs[channel->ch_montrig_idx].mt_pending, channel->ch_montrig_mask); } else { hypercall_signal_event(channel->ch_monprm_dma.hv_paddr); } } static int vmbus_chan_sysctl_mnf(SYSCTL_HANDLER_ARGS) { struct hv_vmbus_channel *chan = arg1; int mnf = 0; if (chan->ch_flags & VMBUS_CHAN_FLAG_HASMNF) mnf = 1; return sysctl_handle_int(oidp, &mnf, 0, req); } static void vmbus_chan_sysctl_create(struct hv_vmbus_channel *chan) { struct sysctl_oid *ch_tree, *chid_tree, *br_tree; struct sysctl_ctx_list *ctx; uint32_t ch_id; char name[16]; /* * Add sysctl nodes related to this channel to this * channel's sysctl ctx, so that they can be destroyed * independently upon close of this channel, which can * happen even if the device is not detached. */ ctx = &chan->ch_sysctl_ctx; sysctl_ctx_init(ctx); /* * Create dev.NAME.UNIT.channel tree. */ ch_tree = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(device_get_sysctl_tree(chan->ch_dev)), OID_AUTO, "channel", CTLFLAG_RD | CTLFLAG_MPSAFE, 0, ""); if (ch_tree == NULL) return; /* * Create dev.NAME.UNIT.channel.CHANID tree. */ if (VMBUS_CHAN_ISPRIMARY(chan)) ch_id = chan->ch_id; else ch_id = chan->ch_prichan->ch_id; snprintf(name, sizeof(name), "%d", ch_id); chid_tree = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(ch_tree), OID_AUTO, name, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, ""); if (chid_tree == NULL) return; if (!VMBUS_CHAN_ISPRIMARY(chan)) { /* * Create dev.NAME.UNIT.channel.CHANID.sub tree. */ ch_tree = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(chid_tree), OID_AUTO, "sub", CTLFLAG_RD | CTLFLAG_MPSAFE, 0, ""); if (ch_tree == NULL) return; /* * Create dev.NAME.UNIT.channel.CHANID.sub.SUBIDX tree. * * NOTE: * chid_tree is changed to this new sysctl tree. */ snprintf(name, sizeof(name), "%d", chan->ch_subidx); chid_tree = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(ch_tree), OID_AUTO, name, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, ""); if (chid_tree == NULL) return; SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(chid_tree), OID_AUTO, "chanid", CTLFLAG_RD, &chan->ch_id, 0, "channel id"); } SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(chid_tree), OID_AUTO, "cpu", CTLFLAG_RD, &chan->ch_cpuid, 0, "owner CPU id"); SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(chid_tree), OID_AUTO, "mnf", CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, chan, 0, vmbus_chan_sysctl_mnf, "I", "has monitor notification facilities"); /* * Create sysctl tree for RX bufring. */ br_tree = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(chid_tree), OID_AUTO, "in", CTLFLAG_RD | CTLFLAG_MPSAFE, 0, ""); if (br_tree != NULL) { hv_ring_buffer_stat(ctx, SYSCTL_CHILDREN(br_tree), &chan->inbound, "inbound ring buffer stats"); } /* * Create sysctl tree for TX bufring. */ br_tree = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(chid_tree), OID_AUTO, "out", CTLFLAG_RD | CTLFLAG_MPSAFE, 0, ""); if (br_tree != NULL) { hv_ring_buffer_stat(ctx, SYSCTL_CHILDREN(br_tree), &chan->outbound, "outbound ring buffer stats"); } } -/** - * @brief Open the specified channel - */ int -hv_vmbus_channel_open( - hv_vmbus_channel* new_channel, - uint32_t send_ring_buffer_size, - uint32_t recv_ring_buffer_size, - void* user_data, - uint32_t user_data_len, - vmbus_chan_callback_t cb, - void *cbarg) +hv_vmbus_channel_open(struct hv_vmbus_channel *chan, + int txbr_size, int rxbr_size, const void *udata, int udlen, + vmbus_chan_callback_t cb, void *cbarg) { - struct vmbus_softc *sc = new_channel->vmbus_sc; + struct vmbus_softc *sc = chan->vmbus_sc; const struct vmbus_chanmsg_chopen_resp *resp; const struct vmbus_message *msg; struct vmbus_chanmsg_chopen *req; struct vmbus_msghc *mh; uint32_t status; - int ret = 0; + int error; uint8_t *br; - if (user_data_len > VMBUS_CHANMSG_CHOPEN_UDATA_SIZE) { + if (udlen > VMBUS_CHANMSG_CHOPEN_UDATA_SIZE) { device_printf(sc->vmbus_dev, - "invalid udata len %u for chan%u\n", - user_data_len, new_channel->ch_id); + "invalid udata len %d for chan%u\n", udlen, chan->ch_id); return EINVAL; } - KASSERT((send_ring_buffer_size & PAGE_MASK) == 0, + KASSERT((txbr_size & PAGE_MASK) == 0, ("send bufring size is not multiple page")); - KASSERT((recv_ring_buffer_size & PAGE_MASK) == 0, + KASSERT((rxbr_size & PAGE_MASK) == 0, ("recv bufring size is not multiple page")); - if (atomic_testandset_int(&new_channel->ch_stflags, + if (atomic_testandset_int(&chan->ch_stflags, VMBUS_CHAN_ST_OPENED_SHIFT)) - panic("double-open chan%u", new_channel->ch_id); + panic("double-open chan%u", chan->ch_id); - new_channel->ch_cb = cb; - new_channel->ch_cbarg = cbarg; + chan->ch_cb = cb; + chan->ch_cbarg = cbarg; - vmbus_chan_update_evtflagcnt(sc, new_channel); + vmbus_chan_update_evtflagcnt(sc, chan); - new_channel->ch_tq = VMBUS_PCPU_GET(new_channel->vmbus_sc, event_tq, - new_channel->ch_cpuid); - if (new_channel->ch_flags & VMBUS_CHAN_FLAG_BATCHREAD) { - TASK_INIT(&new_channel->ch_task, 0, vmbus_chan_task, - new_channel); - } else { - TASK_INIT(&new_channel->ch_task, 0, vmbus_chan_task_nobatch, - new_channel); - } + chan->ch_tq = VMBUS_PCPU_GET(chan->vmbus_sc, event_tq, chan->ch_cpuid); + if (chan->ch_flags & VMBUS_CHAN_FLAG_BATCHREAD) + TASK_INIT(&chan->ch_task, 0, vmbus_chan_task, chan); + else + TASK_INIT(&chan->ch_task, 0, vmbus_chan_task_nobatch, chan); /* * Allocate the TX+RX bufrings. * XXX should use ch_dev dtag */ br = hyperv_dmamem_alloc(bus_get_dma_tag(sc->vmbus_dev), - PAGE_SIZE, 0, send_ring_buffer_size + recv_ring_buffer_size, - &new_channel->ch_bufring_dma, BUS_DMA_WAITOK | BUS_DMA_ZERO); + PAGE_SIZE, 0, txbr_size + rxbr_size, &chan->ch_bufring_dma, + BUS_DMA_WAITOK | BUS_DMA_ZERO); if (br == NULL) { device_printf(sc->vmbus_dev, "bufring allocation failed\n"); - ret = ENOMEM; + error = ENOMEM; goto failed; } - new_channel->ch_bufring = br; + chan->ch_bufring = br; /* TX bufring comes first */ - hv_vmbus_ring_buffer_init(&new_channel->outbound, - br, send_ring_buffer_size); + hv_vmbus_ring_buffer_init(&chan->outbound, br, txbr_size); /* RX bufring immediately follows TX bufring */ - hv_vmbus_ring_buffer_init(&new_channel->inbound, - br + send_ring_buffer_size, recv_ring_buffer_size); + hv_vmbus_ring_buffer_init(&chan->inbound, br + txbr_size, rxbr_size); /* Create sysctl tree for this channel */ - vmbus_chan_sysctl_create(new_channel); + vmbus_chan_sysctl_create(chan); /* * Connect the bufrings, both RX and TX, to this channel. */ - ret = vmbus_chan_gpadl_connect(new_channel, - new_channel->ch_bufring_dma.hv_paddr, - send_ring_buffer_size + recv_ring_buffer_size, - &new_channel->ch_bufring_gpadl); - if (ret != 0) { + error = vmbus_chan_gpadl_connect(chan, chan->ch_bufring_dma.hv_paddr, + txbr_size + rxbr_size, &chan->ch_bufring_gpadl); + if (error) { device_printf(sc->vmbus_dev, - "failed to connect bufring GPADL to chan%u\n", - new_channel->ch_id); + "failed to connect bufring GPADL to chan%u\n", chan->ch_id); goto failed; } /* * Open channel w/ the bufring GPADL on the target CPU. */ mh = vmbus_msghc_get(sc, sizeof(*req)); if (mh == NULL) { device_printf(sc->vmbus_dev, "can not get msg hypercall for chopen(chan%u)\n", - new_channel->ch_id); - ret = ENXIO; + chan->ch_id); + error = ENXIO; goto failed; } req = vmbus_msghc_dataptr(mh); req->chm_hdr.chm_type = VMBUS_CHANMSG_TYPE_CHOPEN; - req->chm_chanid = new_channel->ch_id; - req->chm_openid = new_channel->ch_id; - req->chm_gpadl = new_channel->ch_bufring_gpadl; - req->chm_vcpuid = new_channel->ch_vcpuid; - req->chm_rxbr_pgofs = send_ring_buffer_size >> PAGE_SHIFT; - if (user_data_len) - memcpy(req->chm_udata, user_data, user_data_len); + req->chm_chanid = chan->ch_id; + req->chm_openid = chan->ch_id; + req->chm_gpadl = chan->ch_bufring_gpadl; + req->chm_vcpuid = chan->ch_vcpuid; + req->chm_txbr_pgcnt = txbr_size >> PAGE_SHIFT; + if (udlen > 0) + memcpy(req->chm_udata, udata, udlen); - ret = vmbus_msghc_exec(sc, mh); - if (ret != 0) { + error = vmbus_msghc_exec(sc, mh); + if (error) { device_printf(sc->vmbus_dev, "chopen(chan%u) msg hypercall exec failed: %d\n", - new_channel->ch_id, ret); + chan->ch_id, error); vmbus_msghc_put(sc, mh); goto failed; } msg = vmbus_msghc_wait_result(sc, mh); resp = (const struct vmbus_chanmsg_chopen_resp *)msg->msg_data; status = resp->chm_status; vmbus_msghc_put(sc, mh); if (status == 0) { if (bootverbose) { device_printf(sc->vmbus_dev, "chan%u opened\n", - new_channel->ch_id); + chan->ch_id); } return 0; } - device_printf(sc->vmbus_dev, "failed to open chan%u\n", - new_channel->ch_id); - ret = ENXIO; + device_printf(sc->vmbus_dev, "failed to open chan%u\n", chan->ch_id); + error = ENXIO; failed: - if (new_channel->ch_bufring_gpadl) { - vmbus_chan_gpadl_disconnect(new_channel, - new_channel->ch_bufring_gpadl); - new_channel->ch_bufring_gpadl = 0; + if (chan->ch_bufring_gpadl) { + vmbus_chan_gpadl_disconnect(chan, chan->ch_bufring_gpadl); + chan->ch_bufring_gpadl = 0; } - if (new_channel->ch_bufring != NULL) { - hyperv_dmamem_free(&new_channel->ch_bufring_dma, - new_channel->ch_bufring); - new_channel->ch_bufring = NULL; + if (chan->ch_bufring != NULL) { + hyperv_dmamem_free(&chan->ch_bufring_dma, chan->ch_bufring); + chan->ch_bufring = NULL; } - atomic_clear_int(&new_channel->ch_stflags, VMBUS_CHAN_ST_OPENED); - return ret; + atomic_clear_int(&chan->ch_stflags, VMBUS_CHAN_ST_OPENED); + return error; } int vmbus_chan_gpadl_connect(struct hv_vmbus_channel *chan, bus_addr_t paddr, int size, uint32_t *gpadl0) { struct vmbus_softc *sc = chan->vmbus_sc; struct vmbus_msghc *mh; struct vmbus_chanmsg_gpadl_conn *req; const struct vmbus_message *msg; size_t reqsz; uint32_t gpadl, status; int page_count, range_len, i, cnt, error; uint64_t page_id; /* * Preliminary checks. */ KASSERT((size & PAGE_MASK) == 0, ("invalid GPA size %d, not multiple page size", size)); page_count = size >> PAGE_SHIFT; KASSERT((paddr & PAGE_MASK) == 0, ("GPA is not page aligned %jx", (uintmax_t)paddr)); page_id = paddr >> PAGE_SHIFT; range_len = __offsetof(struct vmbus_gpa_range, gpa_page[page_count]); /* * We don't support multiple GPA ranges. */ if (range_len > UINT16_MAX) { device_printf(sc->vmbus_dev, "GPA too large, %d pages\n", page_count); return EOPNOTSUPP; } /* * Allocate GPADL id. */ gpadl = vmbus_gpadl_alloc(sc); *gpadl0 = gpadl; /* * Connect this GPADL to the target channel. * * NOTE: * Since each message can only hold small set of page * addresses, several messages may be required to * complete the connection. */ if (page_count > VMBUS_CHANMSG_GPADL_CONN_PGMAX) cnt = VMBUS_CHANMSG_GPADL_CONN_PGMAX; else cnt = page_count; page_count -= cnt; reqsz = __offsetof(struct vmbus_chanmsg_gpadl_conn, chm_range.gpa_page[cnt]); mh = vmbus_msghc_get(sc, reqsz); if (mh == NULL) { device_printf(sc->vmbus_dev, "can not get msg hypercall for gpadl->chan%u\n", chan->ch_id); return EIO; } req = vmbus_msghc_dataptr(mh); req->chm_hdr.chm_type = VMBUS_CHANMSG_TYPE_GPADL_CONN; req->chm_chanid = chan->ch_id; req->chm_gpadl = gpadl; req->chm_range_len = range_len; req->chm_range_cnt = 1; req->chm_range.gpa_len = size; req->chm_range.gpa_ofs = 0; for (i = 0; i < cnt; ++i) req->chm_range.gpa_page[i] = page_id++; error = vmbus_msghc_exec(sc, mh); if (error) { device_printf(sc->vmbus_dev, "gpadl->chan%u msg hypercall exec failed: %d\n", chan->ch_id, error); vmbus_msghc_put(sc, mh); return error; } while (page_count > 0) { struct vmbus_chanmsg_gpadl_subconn *subreq; if (page_count > VMBUS_CHANMSG_GPADL_SUBCONN_PGMAX) cnt = VMBUS_CHANMSG_GPADL_SUBCONN_PGMAX; else cnt = page_count; page_count -= cnt; reqsz = __offsetof(struct vmbus_chanmsg_gpadl_subconn, chm_gpa_page[cnt]); vmbus_msghc_reset(mh, reqsz); subreq = vmbus_msghc_dataptr(mh); subreq->chm_hdr.chm_type = VMBUS_CHANMSG_TYPE_GPADL_SUBCONN; subreq->chm_gpadl = gpadl; for (i = 0; i < cnt; ++i) subreq->chm_gpa_page[i] = page_id++; vmbus_msghc_exec_noresult(mh); } KASSERT(page_count == 0, ("invalid page count %d", page_count)); msg = vmbus_msghc_wait_result(sc, mh); status = ((const struct vmbus_chanmsg_gpadl_connresp *) msg->msg_data)->chm_status; vmbus_msghc_put(sc, mh); if (status != 0) { device_printf(sc->vmbus_dev, "gpadl->chan%u failed: " "status %u\n", chan->ch_id, status); return EIO; } else { if (bootverbose) { device_printf(sc->vmbus_dev, "gpadl->chan%u " "succeeded\n", chan->ch_id); } } return 0; } /* * Disconnect the GPA from the target channel */ int vmbus_chan_gpadl_disconnect(struct hv_vmbus_channel *chan, uint32_t gpadl) { struct vmbus_softc *sc = chan->vmbus_sc; struct vmbus_msghc *mh; struct vmbus_chanmsg_gpadl_disconn *req; int error; mh = vmbus_msghc_get(sc, sizeof(*req)); if (mh == NULL) { device_printf(sc->vmbus_dev, "can not get msg hypercall for gpa x->chan%u\n", chan->ch_id); return EBUSY; } req = vmbus_msghc_dataptr(mh); req->chm_hdr.chm_type = VMBUS_CHANMSG_TYPE_GPADL_DISCONN; req->chm_chanid = chan->ch_id; req->chm_gpadl = gpadl; error = vmbus_msghc_exec(sc, mh); if (error) { device_printf(sc->vmbus_dev, "gpa x->chan%u msg hypercall exec failed: %d\n", chan->ch_id, error); vmbus_msghc_put(sc, mh); return error; } vmbus_msghc_wait_result(sc, mh); /* Discard result; no useful information */ vmbus_msghc_put(sc, mh); return 0; } static void vmbus_chan_close_internal(struct hv_vmbus_channel *chan) { struct vmbus_softc *sc = chan->vmbus_sc; struct vmbus_msghc *mh; struct vmbus_chanmsg_chclose *req; struct taskqueue *tq = chan->ch_tq; int error; /* TODO: stringent check */ atomic_clear_int(&chan->ch_stflags, VMBUS_CHAN_ST_OPENED); /* * Free this channel's sysctl tree attached to its device's * sysctl tree. */ sysctl_ctx_free(&chan->ch_sysctl_ctx); /* * Set ch_tq to NULL to avoid more requests be scheduled. * XXX pretty broken; need rework. */ chan->ch_tq = NULL; taskqueue_drain(tq, &chan->ch_task); chan->ch_cb = NULL; /* * Close this channel. */ mh = vmbus_msghc_get(sc, sizeof(*req)); if (mh == NULL) { device_printf(sc->vmbus_dev, "can not get msg hypercall for chclose(chan%u)\n", chan->ch_id); return; } req = vmbus_msghc_dataptr(mh); req->chm_hdr.chm_type = VMBUS_CHANMSG_TYPE_CHCLOSE; req->chm_chanid = chan->ch_id; error = vmbus_msghc_exec_noresult(mh); vmbus_msghc_put(sc, mh); if (error) { device_printf(sc->vmbus_dev, "chclose(chan%u) msg hypercall exec failed: %d\n", chan->ch_id, error); return; } else if (bootverbose) { device_printf(sc->vmbus_dev, "close chan%u\n", chan->ch_id); } /* * Disconnect the TX+RX bufrings from this channel. */ if (chan->ch_bufring_gpadl) { vmbus_chan_gpadl_disconnect(chan, chan->ch_bufring_gpadl); chan->ch_bufring_gpadl = 0; } /* * Destroy the TX+RX bufrings. */ hv_ring_buffer_cleanup(&chan->outbound); hv_ring_buffer_cleanup(&chan->inbound); if (chan->ch_bufring != NULL) { hyperv_dmamem_free(&chan->ch_bufring_dma, chan->ch_bufring); chan->ch_bufring = NULL; } } /* * Caller should make sure that all sub-channels have * been added to 'chan' and all to-be-closed channels * are not being opened. */ void hv_vmbus_channel_close(struct hv_vmbus_channel *chan) { int subchan_cnt; if (!VMBUS_CHAN_ISPRIMARY(chan)) { /* * Sub-channel is closed when its primary channel * is closed; done. */ return; } /* * Close all sub-channels, if any. */ subchan_cnt = chan->ch_subchan_cnt; if (subchan_cnt > 0) { struct hv_vmbus_channel **subchan; int i; subchan = vmbus_subchan_get(chan, subchan_cnt); for (i = 0; i < subchan_cnt; ++i) vmbus_chan_close_internal(subchan[i]); vmbus_subchan_rel(subchan, subchan_cnt); } /* Then close the primary channel. */ vmbus_chan_close_internal(chan); } int vmbus_chan_send(struct hv_vmbus_channel *chan, uint16_t type, uint16_t flags, void *data, int dlen, uint64_t xactid) { struct vmbus_chanpkt pkt; int pktlen, pad_pktlen, hlen, error; uint64_t pad = 0; struct iovec iov[3]; boolean_t send_evt; hlen = sizeof(pkt); pktlen = hlen + dlen; pad_pktlen = VMBUS_CHANPKT_TOTLEN(pktlen); pkt.cp_hdr.cph_type = type; pkt.cp_hdr.cph_flags = flags; VMBUS_CHANPKT_SETLEN(pkt.cp_hdr.cph_hlen, hlen); VMBUS_CHANPKT_SETLEN(pkt.cp_hdr.cph_tlen, pad_pktlen); pkt.cp_hdr.cph_xactid = xactid; iov[0].iov_base = &pkt; iov[0].iov_len = hlen; iov[1].iov_base = data; iov[1].iov_len = dlen; iov[2].iov_base = &pad; iov[2].iov_len = pad_pktlen - pktlen; error = hv_ring_buffer_write(&chan->outbound, iov, 3, &send_evt); if (!error && send_evt) vmbus_chan_send_event(chan); return error; } int vmbus_chan_send_sglist(struct hv_vmbus_channel *chan, struct vmbus_gpa sg[], int sglen, void *data, int dlen, uint64_t xactid) { struct vmbus_chanpkt_sglist pkt; int pktlen, pad_pktlen, hlen, error; struct iovec iov[4]; boolean_t send_evt; uint64_t pad = 0; KASSERT(sglen < VMBUS_CHAN_SGLIST_MAX, ("invalid sglist len %d", sglen)); hlen = __offsetof(struct vmbus_chanpkt_sglist, cp_gpa[sglen]); pktlen = hlen + dlen; pad_pktlen = VMBUS_CHANPKT_TOTLEN(pktlen); pkt.cp_hdr.cph_type = VMBUS_CHANPKT_TYPE_GPA; pkt.cp_hdr.cph_flags = VMBUS_CHANPKT_FLAG_RC; VMBUS_CHANPKT_SETLEN(pkt.cp_hdr.cph_hlen, hlen); VMBUS_CHANPKT_SETLEN(pkt.cp_hdr.cph_tlen, pad_pktlen); pkt.cp_hdr.cph_xactid = xactid; pkt.cp_rsvd = 0; pkt.cp_gpa_cnt = sglen; iov[0].iov_base = &pkt; iov[0].iov_len = sizeof(pkt); iov[1].iov_base = sg; iov[1].iov_len = sizeof(struct vmbus_gpa) * sglen; iov[2].iov_base = data; iov[2].iov_len = dlen; iov[3].iov_base = &pad; iov[3].iov_len = pad_pktlen - pktlen; error = hv_ring_buffer_write(&chan->outbound, iov, 4, &send_evt); if (!error && send_evt) vmbus_chan_send_event(chan); return error; } int vmbus_chan_send_prplist(struct hv_vmbus_channel *chan, struct vmbus_gpa_range *prp, int prp_cnt, void *data, int dlen, uint64_t xactid) { struct vmbus_chanpkt_prplist pkt; int pktlen, pad_pktlen, hlen, error; struct iovec iov[4]; boolean_t send_evt; uint64_t pad = 0; KASSERT(prp_cnt < VMBUS_CHAN_PRPLIST_MAX, ("invalid prplist entry count %d", prp_cnt)); hlen = __offsetof(struct vmbus_chanpkt_prplist, cp_range[0].gpa_page[prp_cnt]); pktlen = hlen + dlen; pad_pktlen = VMBUS_CHANPKT_TOTLEN(pktlen); pkt.cp_hdr.cph_type = VMBUS_CHANPKT_TYPE_GPA; pkt.cp_hdr.cph_flags = VMBUS_CHANPKT_FLAG_RC; VMBUS_CHANPKT_SETLEN(pkt.cp_hdr.cph_hlen, hlen); VMBUS_CHANPKT_SETLEN(pkt.cp_hdr.cph_tlen, pad_pktlen); pkt.cp_hdr.cph_xactid = xactid; pkt.cp_rsvd = 0; pkt.cp_range_cnt = 1; iov[0].iov_base = &pkt; iov[0].iov_len = sizeof(pkt); iov[1].iov_base = prp; iov[1].iov_len = __offsetof(struct vmbus_gpa_range, gpa_page[prp_cnt]); iov[2].iov_base = data; iov[2].iov_len = dlen; iov[3].iov_base = &pad; iov[3].iov_len = pad_pktlen - pktlen; error = hv_ring_buffer_write(&chan->outbound, iov, 4, &send_evt); if (!error && send_evt) vmbus_chan_send_event(chan); return error; } int vmbus_chan_recv(struct hv_vmbus_channel *chan, void *data, int *dlen0, uint64_t *xactid) { struct vmbus_chanpkt_hdr pkt; int error, dlen, hlen; error = hv_ring_buffer_peek(&chan->inbound, &pkt, sizeof(pkt)); if (error) return error; hlen = VMBUS_CHANPKT_GETLEN(pkt.cph_hlen); dlen = VMBUS_CHANPKT_GETLEN(pkt.cph_tlen) - hlen; if (*dlen0 < dlen) { /* Return the size of this packet's data. */ *dlen0 = dlen; return ENOBUFS; } *xactid = pkt.cph_xactid; *dlen0 = dlen; /* Skip packet header */ error = hv_ring_buffer_read(&chan->inbound, data, dlen, hlen); KASSERT(!error, ("hv_ring_buffer_read failed")); return 0; } int vmbus_chan_recv_pkt(struct hv_vmbus_channel *chan, struct vmbus_chanpkt_hdr *pkt0, int *pktlen0) { struct vmbus_chanpkt_hdr pkt; int error, pktlen; error = hv_ring_buffer_peek(&chan->inbound, &pkt, sizeof(pkt)); if (error) return error; pktlen = VMBUS_CHANPKT_GETLEN(pkt.cph_tlen); if (*pktlen0 < pktlen) { /* Return the size of this packet. */ *pktlen0 = pktlen; return ENOBUFS; } *pktlen0 = pktlen; /* Include packet header */ error = hv_ring_buffer_read(&chan->inbound, pkt0, pktlen, 0); KASSERT(!error, ("hv_ring_buffer_read failed")); return 0; } static void vmbus_chan_task(void *xchan, int pending __unused) { struct hv_vmbus_channel *chan = xchan; vmbus_chan_callback_t cb = chan->ch_cb; void *cbarg = chan->ch_cbarg; /* * Optimize host to guest signaling by ensuring: * 1. While reading the channel, we disable interrupts from * host. * 2. Ensure that we process all posted messages from the host * before returning from this callback. * 3. Once we return, enable signaling from the host. Once this * state is set we check to see if additional packets are * available to read. In this case we repeat the process. * * NOTE: Interrupt has been disabled in the ISR. */ for (;;) { uint32_t left; cb(cbarg); left = hv_ring_buffer_read_end(&chan->inbound); if (left == 0) { /* No more data in RX bufring; done */ break; } hv_ring_buffer_read_begin(&chan->inbound); } } static void vmbus_chan_task_nobatch(void *xchan, int pending __unused) { struct hv_vmbus_channel *chan = xchan; chan->ch_cb(chan->ch_cbarg); } static __inline void vmbus_event_flags_proc(struct vmbus_softc *sc, volatile u_long *event_flags, int flag_cnt) { int f; for (f = 0; f < flag_cnt; ++f) { uint32_t chid_base; u_long flags; int chid_ofs; if (event_flags[f] == 0) continue; flags = atomic_swap_long(&event_flags[f], 0); chid_base = f << VMBUS_EVTFLAG_SHIFT; while ((chid_ofs = ffsl(flags)) != 0) { struct hv_vmbus_channel *channel; --chid_ofs; /* NOTE: ffsl is 1-based */ flags &= ~(1UL << chid_ofs); channel = sc->vmbus_chmap[chid_base + chid_ofs]; /* if channel is closed or closing */ if (channel == NULL || channel->ch_tq == NULL) continue; if (channel->ch_flags & VMBUS_CHAN_FLAG_BATCHREAD) hv_ring_buffer_read_begin(&channel->inbound); taskqueue_enqueue(channel->ch_tq, &channel->ch_task); } } } void vmbus_event_proc(struct vmbus_softc *sc, int cpu) { struct vmbus_evtflags *eventf; /* * On Host with Win8 or above, the event page can be checked directly * to get the id of the channel that has the pending interrupt. */ eventf = VMBUS_PCPU_GET(sc, event_flags, cpu) + VMBUS_SINT_MESSAGE; vmbus_event_flags_proc(sc, eventf->evt_flags, VMBUS_PCPU_GET(sc, event_flags_cnt, cpu)); } void vmbus_event_proc_compat(struct vmbus_softc *sc, int cpu) { struct vmbus_evtflags *eventf; eventf = VMBUS_PCPU_GET(sc, event_flags, cpu) + VMBUS_SINT_MESSAGE; if (atomic_testandclear_long(&eventf->evt_flags[0], 0)) { vmbus_event_flags_proc(sc, sc->vmbus_rx_evtflags, VMBUS_CHAN_MAX_COMPAT >> VMBUS_EVTFLAG_SHIFT); } } static void vmbus_chan_update_evtflagcnt(struct vmbus_softc *sc, const struct hv_vmbus_channel *chan) { volatile int *flag_cnt_ptr; int flag_cnt; flag_cnt = (chan->ch_id / VMBUS_EVTFLAG_LEN) + 1; flag_cnt_ptr = VMBUS_PCPU_PTR(sc, event_flags_cnt, chan->ch_cpuid); for (;;) { int old_flag_cnt; old_flag_cnt = *flag_cnt_ptr; if (old_flag_cnt >= flag_cnt) break; if (atomic_cmpset_int(flag_cnt_ptr, old_flag_cnt, flag_cnt)) { if (bootverbose) { device_printf(sc->vmbus_dev, "channel%u update cpu%d flag_cnt to %d\n", chan->ch_id, chan->ch_cpuid, flag_cnt); } break; } } } 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_chan_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->ch_cpuid = cpu; chan->ch_vcpuid = 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->ch_cpuid, chan->ch_vcpuid); } } void vmbus_chan_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_chan_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_chan_cpu_{set,rr}(). */ vmbus_chan_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. */ vmbus_add_child(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 */ vmbus_delete_child(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); vmbus_delete_child(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->ch_vcpuid == cur_vcpu){ return new_channel; } old_cpu_distance = ((outgoing_channel->ch_vcpuid > cur_vcpu) ? (outgoing_channel->ch_vcpuid - cur_vcpu) : (cur_vcpu - outgoing_channel->ch_vcpuid)); new_cpu_distance = ((new_channel->ch_vcpuid > cur_vcpu) ? (new_channel->ch_vcpuid - cur_vcpu) : (cur_vcpu - new_channel->ch_vcpuid)); if (old_cpu_distance < new_cpu_distance) { continue; } outgoing_channel = new_channel; } return(outgoing_channel); } struct hv_vmbus_channel ** vmbus_subchan_get(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_subchan_rel(struct hv_vmbus_channel **subchan, int subchan_cnt __unused) { free(subchan, M_TEMP); } void vmbus_subchan_drain(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); } Index: head/sys/dev/hyperv/vmbus/vmbus_reg.h =================================================================== --- head/sys/dev/hyperv/vmbus/vmbus_reg.h (revision 302985) +++ head/sys/dev/hyperv/vmbus/vmbus_reg.h (revision 302986) @@ -1,302 +1,302 @@ /*- * 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_REG_H_ #define _VMBUS_REG_H_ #include #include /* XXX for hyperv_guid */ #include #include /* * Hyper-V SynIC message format. */ #define VMBUS_MSG_DSIZE_MAX 240 #define VMBUS_MSG_SIZE 256 struct vmbus_message { uint32_t msg_type; /* HYPERV_MSGTYPE_ */ uint8_t msg_dsize; /* data size */ uint8_t msg_flags; /* VMBUS_MSGFLAG_ */ uint16_t msg_rsvd; uint64_t msg_id; uint8_t msg_data[VMBUS_MSG_DSIZE_MAX]; } __packed; CTASSERT(sizeof(struct vmbus_message) == VMBUS_MSG_SIZE); #define VMBUS_MSGFLAG_PENDING 0x01 /* * Hyper-V SynIC event flags */ #ifdef __LP64__ #define VMBUS_EVTFLAGS_MAX 32 #define VMBUS_EVTFLAG_SHIFT 6 #else #define VMBUS_EVTFLAGS_MAX 64 #define VMBUS_EVTFLAG_SHIFT 5 #endif #define VMBUS_EVTFLAG_LEN (1 << VMBUS_EVTFLAG_SHIFT) #define VMBUS_EVTFLAG_MASK (VMBUS_EVTFLAG_LEN - 1) #define VMBUS_EVTFLAGS_SIZE 256 struct vmbus_evtflags { u_long evt_flags[VMBUS_EVTFLAGS_MAX]; } __packed; CTASSERT(sizeof(struct vmbus_evtflags) == VMBUS_EVTFLAGS_SIZE); /* * Hyper-V Monitor Notification Facility */ struct vmbus_mon_trig { uint32_t mt_pending; uint32_t mt_armed; } __packed; #define VMBUS_MONTRIGS_MAX 4 #define VMBUS_MONTRIG_LEN 32 struct vmbus_mnf { uint32_t mnf_state; uint32_t mnf_rsvd1; struct vmbus_mon_trig mnf_trigs[VMBUS_MONTRIGS_MAX]; uint8_t mnf_rsvd2[536]; uint16_t mnf_lat[VMBUS_MONTRIGS_MAX][VMBUS_MONTRIG_LEN]; uint8_t mnf_rsvd3[256]; struct hyperv_mon_param mnf_param[VMBUS_MONTRIGS_MAX][VMBUS_MONTRIG_LEN]; uint8_t mnf_rsvd4[1984]; } __packed; CTASSERT(sizeof(struct vmbus_mnf) == PAGE_SIZE); /* * Channel */ #define VMBUS_CHAN_MAX_COMPAT 256 #define VMBUS_CHAN_MAX (VMBUS_EVTFLAG_LEN * VMBUS_EVTFLAGS_MAX) /* * Channel packets */ #define VMBUS_CHANPKT_SIZE_ALIGN (1 << VMBUS_CHANPKT_SIZE_SHIFT) #define VMBUS_CHANPKT_SETLEN(pktlen, len) \ do { \ (pktlen) = (len) >> VMBUS_CHANPKT_SIZE_SHIFT; \ } while (0) #define VMBUS_CHANPKT_TOTLEN(tlen) \ roundup2((tlen), VMBUS_CHANPKT_SIZE_ALIGN) struct vmbus_chanpkt { struct vmbus_chanpkt_hdr cp_hdr; } __packed; struct vmbus_chanpkt_sglist { struct vmbus_chanpkt_hdr cp_hdr; uint32_t cp_rsvd; uint32_t cp_gpa_cnt; struct vmbus_gpa cp_gpa[]; } __packed; struct vmbus_chanpkt_prplist { struct vmbus_chanpkt_hdr cp_hdr; uint32_t cp_rsvd; uint32_t cp_range_cnt; struct vmbus_gpa_range cp_range[]; } __packed; /* * Channel messages * - Embedded in vmbus_message.msg_data, e.g. response and notification. * - Embedded in hypercall_postmsg_in.hc_data, e.g. request. */ #define VMBUS_CHANMSG_TYPE_CHOFFER 1 /* NOTE */ #define VMBUS_CHANMSG_TYPE_CHRESCIND 2 /* NOTE */ #define VMBUS_CHANMSG_TYPE_CHREQUEST 3 /* REQ */ #define VMBUS_CHANMSG_TYPE_CHOFFER_DONE 4 /* NOTE */ #define VMBUS_CHANMSG_TYPE_CHOPEN 5 /* REQ */ #define VMBUS_CHANMSG_TYPE_CHOPEN_RESP 6 /* RESP */ #define VMBUS_CHANMSG_TYPE_CHCLOSE 7 /* REQ */ #define VMBUS_CHANMSG_TYPE_GPADL_CONN 8 /* REQ */ #define VMBUS_CHANMSG_TYPE_GPADL_SUBCONN 9 /* REQ */ #define VMBUS_CHANMSG_TYPE_GPADL_CONNRESP 10 /* RESP */ #define VMBUS_CHANMSG_TYPE_GPADL_DISCONN 11 /* REQ */ #define VMBUS_CHANMSG_TYPE_GPADL_DISCONNRESP 12 /* RESP */ #define VMBUS_CHANMSG_TYPE_CHFREE 13 /* REQ */ #define VMBUS_CHANMSG_TYPE_CONNECT 14 /* REQ */ #define VMBUS_CHANMSG_TYPE_CONNECT_RESP 15 /* RESP */ #define VMBUS_CHANMSG_TYPE_DISCONNECT 16 /* REQ */ #define VMBUS_CHANMSG_TYPE_MAX 22 struct vmbus_chanmsg_hdr { uint32_t chm_type; /* VMBUS_CHANMSG_TYPE_ */ uint32_t chm_rsvd; } __packed; /* VMBUS_CHANMSG_TYPE_CONNECT */ struct vmbus_chanmsg_connect { struct vmbus_chanmsg_hdr chm_hdr; uint32_t chm_ver; uint32_t chm_rsvd; uint64_t chm_evtflags; uint64_t chm_mnf1; uint64_t chm_mnf2; } __packed; /* VMBUS_CHANMSG_TYPE_CONNECT_RESP */ struct vmbus_chanmsg_connect_resp { struct vmbus_chanmsg_hdr chm_hdr; uint8_t chm_done; } __packed; /* VMBUS_CHANMSG_TYPE_CHREQUEST */ struct vmbus_chanmsg_chrequest { struct vmbus_chanmsg_hdr chm_hdr; } __packed; /* VMBUS_CHANMSG_TYPE_DISCONNECT */ struct vmbus_chanmsg_disconnect { struct vmbus_chanmsg_hdr chm_hdr; } __packed; /* VMBUS_CHANMSG_TYPE_CHOPEN */ struct vmbus_chanmsg_chopen { struct vmbus_chanmsg_hdr chm_hdr; uint32_t chm_chanid; uint32_t chm_openid; uint32_t chm_gpadl; uint32_t chm_vcpuid; - uint32_t chm_rxbr_pgofs; + uint32_t chm_txbr_pgcnt; #define VMBUS_CHANMSG_CHOPEN_UDATA_SIZE 120 uint8_t chm_udata[VMBUS_CHANMSG_CHOPEN_UDATA_SIZE]; } __packed; /* VMBUS_CHANMSG_TYPE_CHOPEN_RESP */ struct vmbus_chanmsg_chopen_resp { struct vmbus_chanmsg_hdr chm_hdr; uint32_t chm_chanid; uint32_t chm_openid; uint32_t chm_status; } __packed; /* VMBUS_CHANMSG_TYPE_GPADL_CONN */ struct vmbus_chanmsg_gpadl_conn { struct vmbus_chanmsg_hdr chm_hdr; uint32_t chm_chanid; uint32_t chm_gpadl; uint16_t chm_range_len; uint16_t chm_range_cnt; struct vmbus_gpa_range chm_range; } __packed; #define VMBUS_CHANMSG_GPADL_CONN_PGMAX 26 CTASSERT(__offsetof(struct vmbus_chanmsg_gpadl_conn, chm_range.gpa_page[VMBUS_CHANMSG_GPADL_CONN_PGMAX]) <= HYPERCALL_POSTMSGIN_DSIZE_MAX); /* VMBUS_CHANMSG_TYPE_GPADL_SUBCONN */ struct vmbus_chanmsg_gpadl_subconn { struct vmbus_chanmsg_hdr chm_hdr; uint32_t chm_msgno; uint32_t chm_gpadl; uint64_t chm_gpa_page[]; } __packed; #define VMBUS_CHANMSG_GPADL_SUBCONN_PGMAX 28 CTASSERT(__offsetof(struct vmbus_chanmsg_gpadl_subconn, chm_gpa_page[VMBUS_CHANMSG_GPADL_SUBCONN_PGMAX]) <= HYPERCALL_POSTMSGIN_DSIZE_MAX); /* VMBUS_CHANMSG_TYPE_GPADL_CONNRESP */ struct vmbus_chanmsg_gpadl_connresp { struct vmbus_chanmsg_hdr chm_hdr; uint32_t chm_chanid; uint32_t chm_gpadl; uint32_t chm_status; } __packed; /* VMBUS_CHANMSG_TYPE_CHCLOSE */ struct vmbus_chanmsg_chclose { struct vmbus_chanmsg_hdr chm_hdr; uint32_t chm_chanid; } __packed; /* VMBUS_CHANMSG_TYPE_GPADL_DISCONN */ struct vmbus_chanmsg_gpadl_disconn { struct vmbus_chanmsg_hdr chm_hdr; uint32_t chm_chanid; uint32_t chm_gpadl; } __packed; /* VMBUS_CHANMSG_TYPE_CHFREE */ struct vmbus_chanmsg_chfree { struct vmbus_chanmsg_hdr chm_hdr; uint32_t chm_chanid; } __packed; /* VMBUS_CHANMSG_TYPE_CHRESCIND */ struct vmbus_chanmsg_chrescind { struct vmbus_chanmsg_hdr chm_hdr; uint32_t chm_chanid; } __packed; /* VMBUS_CHANMSG_TYPE_CHOFFER */ struct vmbus_chanmsg_choffer { struct vmbus_chanmsg_hdr chm_hdr; struct hyperv_guid chm_chtype; struct hyperv_guid chm_chinst; uint64_t chm_chlat; /* unit: 100ns */ uint32_t chm_chrev; uint32_t chm_svrctx_sz; uint16_t chm_chflags; uint16_t chm_mmio_sz; /* unit: MB */ uint8_t chm_udata[120]; uint16_t chm_subidx; uint16_t chm_rsvd; uint32_t chm_chanid; uint8_t chm_montrig; uint8_t chm_flags1; /* VMBUS_CHOFFER_FLAG1_ */ uint16_t chm_flags2; uint32_t chm_connid; } __packed; CTASSERT(sizeof(struct vmbus_chanmsg_choffer) <= VMBUS_MSG_DSIZE_MAX); #define VMBUS_CHOFFER_FLAG1_HASMNF 0x01 #endif /* !_VMBUS_REG_H_ */