Author: sephe Date: Mon Jul 18 05:36:31 2016 New Revision: 302986 URL: https://svnweb.freebsd.org/changeset/base/302986
Log: hyperv/vmbus: Cosmetic vmbus channel open cleanup MFC after: 1 week Sponsored by: Microsoft OSTC Differential Revision: https://reviews.freebsd.org/D7217 Modified: head/sys/dev/hyperv/include/hyperv.h head/sys/dev/hyperv/vmbus/hv_channel.c head/sys/dev/hyperv/vmbus/vmbus_reg.h Modified: head/sys/dev/hyperv/include/hyperv.h ============================================================================== --- head/sys/dev/hyperv/include/hyperv.h Mon Jul 18 05:00:01 2016 (r302985) +++ head/sys/dev/hyperv/include/hyperv.h Mon Jul 18 05:36:31 2016 (r302986) @@ -276,15 +276,9 @@ hv_set_channel_read_state(hv_vmbus_chann 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); Modified: head/sys/dev/hyperv/vmbus/hv_channel.c ============================================================================== --- head/sys/dev/hyperv/vmbus/hv_channel.c Mon Jul 18 05:00:01 2016 (r302985) +++ head/sys/dev/hyperv/vmbus/hv_channel.c Mon Jul 18 05:36:31 2016 (r302986) @@ -201,93 +201,75 @@ vmbus_chan_sysctl_create(struct hv_vmbus } } -/** - * @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; } @@ -298,26 +280,26 @@ hv_vmbus_channel_open( 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; } @@ -331,28 +313,25 @@ hv_vmbus_channel_open( 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 (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_gpadl) { + vmbus_chan_gpadl_disconnect(chan, chan->ch_bufring_gpadl); + chan->ch_bufring_gpadl = 0; } - atomic_clear_int(&new_channel->ch_stflags, VMBUS_CHAN_ST_OPENED); - return ret; + if (chan->ch_bufring != NULL) { + hyperv_dmamem_free(&chan->ch_bufring_dma, chan->ch_bufring); + chan->ch_bufring = NULL; + } + atomic_clear_int(&chan->ch_stflags, VMBUS_CHAN_ST_OPENED); + return error; } int Modified: head/sys/dev/hyperv/vmbus/vmbus_reg.h ============================================================================== --- head/sys/dev/hyperv/vmbus/vmbus_reg.h Mon Jul 18 05:00:01 2016 (r302985) +++ head/sys/dev/hyperv/vmbus/vmbus_reg.h Mon Jul 18 05:36:31 2016 (r302986) @@ -202,7 +202,7 @@ struct vmbus_chanmsg_chopen { 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; _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
