mirror of
https://github.com/opnsense/src.git
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hyperv/vmbus: Merge hv_connection.c into hv_channel.c
MFC after: 1 week Sponsored by: Microsoft OSTC Differential Revision: https://reviews.freebsd.org/D7004
This commit is contained in:
Sepherosa Ziehau
parent
4c0ef5db05
commit
e71d17193d
6 changed files with 95 additions and 141 deletions
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@ -272,7 +272,6 @@ 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_connection.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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@ -248,7 +248,6 @@ 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_connection.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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@ -52,6 +52,8 @@ __FBSDID("$FreeBSD$");
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static void vmbus_channel_set_event(hv_vmbus_channel* channel);
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static void VmbusProcessChannelEvent(void* channel, int pending);
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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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/**
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* @brief Trigger an event notification on the specified channel
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@ -207,7 +209,7 @@ hv_vmbus_channel_open(
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new_channel->on_channel_callback = pfn_on_channel_callback;
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new_channel->channel_callback_context = context;
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vmbus_on_channel_open(new_channel);
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vmbus_chan_update_evtflagcnt(sc, new_channel);
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new_channel->rxq = VMBUS_PCPU_GET(new_channel->vmbus_sc, event_tq,
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new_channel->target_cpu);
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@ -883,3 +885,95 @@ VmbusProcessChannelEvent(void* context, int pending)
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} while (is_batched_reading && (bytes_to_read != 0));
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}
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}
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static __inline void
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vmbus_event_flags_proc(struct vmbus_softc *sc, volatile u_long *event_flags,
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int flag_cnt)
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{
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int f;
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for (f = 0; f < flag_cnt; ++f) {
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uint32_t rel_id_base;
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u_long flags;
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int bit;
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if (event_flags[f] == 0)
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continue;
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flags = atomic_swap_long(&event_flags[f], 0);
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rel_id_base = f << VMBUS_EVTFLAG_SHIFT;
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while ((bit = ffsl(flags)) != 0) {
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struct hv_vmbus_channel *channel;
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uint32_t rel_id;
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--bit; /* NOTE: ffsl is 1-based */
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flags &= ~(1UL << bit);
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rel_id = rel_id_base + bit;
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channel = sc->vmbus_chmap[rel_id];
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/* if channel is closed or closing */
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if (channel == NULL || channel->rxq == NULL)
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continue;
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if (channel->batched_reading)
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hv_ring_buffer_read_begin(&channel->inbound);
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taskqueue_enqueue(channel->rxq, &channel->channel_task);
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}
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}
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}
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void
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vmbus_event_proc(struct vmbus_softc *sc, int cpu)
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{
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struct vmbus_evtflags *eventf;
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/*
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* On Host with Win8 or above, the event page can be checked directly
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* to get the id of the channel that has the pending interrupt.
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*/
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eventf = VMBUS_PCPU_GET(sc, event_flags, cpu) + VMBUS_SINT_MESSAGE;
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vmbus_event_flags_proc(sc, eventf->evt_flags,
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VMBUS_PCPU_GET(sc, event_flags_cnt, cpu));
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}
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void
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vmbus_event_proc_compat(struct vmbus_softc *sc, int cpu)
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{
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struct vmbus_evtflags *eventf;
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eventf = VMBUS_PCPU_GET(sc, event_flags, cpu) + VMBUS_SINT_MESSAGE;
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if (atomic_testandclear_long(&eventf->evt_flags[0], 0)) {
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vmbus_event_flags_proc(sc, sc->vmbus_rx_evtflags,
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VMBUS_CHAN_MAX_COMPAT >> VMBUS_EVTFLAG_SHIFT);
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}
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}
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static void
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vmbus_chan_update_evtflagcnt(struct vmbus_softc *sc,
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const struct hv_vmbus_channel *chan)
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{
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volatile int *flag_cnt_ptr;
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int flag_cnt;
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flag_cnt = (chan->offer_msg.child_rel_id / VMBUS_EVTFLAG_LEN) + 1;
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flag_cnt_ptr = VMBUS_PCPU_PTR(sc, event_flags_cnt, chan->target_cpu);
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for (;;) {
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int old_flag_cnt;
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old_flag_cnt = *flag_cnt_ptr;
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if (old_flag_cnt >= flag_cnt)
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break;
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if (atomic_cmpset_int(flag_cnt_ptr, old_flag_cnt, flag_cnt)) {
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if (bootverbose) {
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device_printf(sc->vmbus_dev,
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"channel%u update cpu%d flag_cnt to %d\n",
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chan->offer_msg.child_rel_id,
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chan->target_cpu, flag_cnt);
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}
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break;
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}
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}
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}
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@ -1,136 +0,0 @@
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/*-
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* Copyright (c) 2009-2012,2016 Microsoft Corp.
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* Copyright (c) 2012 NetApp Inc.
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* Copyright (c) 2012 Citrix Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/systm.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <machine/bus.h>
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#include <machine/atomic.h>
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#include <vm/vm.h>
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#include <vm/vm_param.h>
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#include <vm/pmap.h>
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#include <dev/hyperv/vmbus/hv_vmbus_priv.h>
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#include <dev/hyperv/vmbus/hyperv_reg.h>
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#include <dev/hyperv/vmbus/vmbus_reg.h>
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#include <dev/hyperv/vmbus/vmbus_var.h>
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static __inline void
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vmbus_event_flags_proc(struct vmbus_softc *sc, volatile u_long *event_flags,
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int flag_cnt)
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{
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int f;
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for (f = 0; f < flag_cnt; ++f) {
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uint32_t rel_id_base;
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u_long flags;
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int bit;
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if (event_flags[f] == 0)
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continue;
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flags = atomic_swap_long(&event_flags[f], 0);
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rel_id_base = f << VMBUS_EVTFLAG_SHIFT;
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while ((bit = ffsl(flags)) != 0) {
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struct hv_vmbus_channel *channel;
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uint32_t rel_id;
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--bit; /* NOTE: ffsl is 1-based */
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flags &= ~(1UL << bit);
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rel_id = rel_id_base + bit;
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channel = sc->vmbus_chmap[rel_id];
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/* if channel is closed or closing */
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if (channel == NULL || channel->rxq == NULL)
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continue;
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if (channel->batched_reading)
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hv_ring_buffer_read_begin(&channel->inbound);
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taskqueue_enqueue(channel->rxq, &channel->channel_task);
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}
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}
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}
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void
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vmbus_event_proc(struct vmbus_softc *sc, int cpu)
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{
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struct vmbus_evtflags *eventf;
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/*
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* On Host with Win8 or above, the event page can be checked directly
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* to get the id of the channel that has the pending interrupt.
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*/
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eventf = VMBUS_PCPU_GET(sc, event_flags, cpu) + VMBUS_SINT_MESSAGE;
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vmbus_event_flags_proc(sc, eventf->evt_flags,
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VMBUS_PCPU_GET(sc, event_flags_cnt, cpu));
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}
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void
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vmbus_event_proc_compat(struct vmbus_softc *sc, int cpu)
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{
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struct vmbus_evtflags *eventf;
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eventf = VMBUS_PCPU_GET(sc, event_flags, cpu) + VMBUS_SINT_MESSAGE;
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if (atomic_testandclear_long(&eventf->evt_flags[0], 0)) {
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vmbus_event_flags_proc(sc, sc->vmbus_rx_evtflags,
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VMBUS_CHAN_MAX_COMPAT >> VMBUS_EVTFLAG_SHIFT);
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}
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}
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void
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vmbus_on_channel_open(const struct hv_vmbus_channel *chan)
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{
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volatile int *flag_cnt_ptr;
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int flag_cnt;
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flag_cnt = (chan->offer_msg.child_rel_id / VMBUS_EVTFLAG_LEN) + 1;
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flag_cnt_ptr = VMBUS_PCPU_PTR(chan->vmbus_sc, event_flags_cnt,
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chan->target_cpu);
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for (;;) {
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int old_flag_cnt;
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old_flag_cnt = *flag_cnt_ptr;
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if (old_flag_cnt >= flag_cnt)
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break;
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if (atomic_cmpset_int(flag_cnt_ptr, old_flag_cnt, flag_cnt)) {
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if (bootverbose) {
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printf("VMBUS: channel%u update "
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"cpu%d flag_cnt to %d\n",
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chan->offer_msg.child_rel_id,
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chan->target_cpu, flag_cnt);
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}
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break;
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}
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}
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}
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@ -131,7 +131,6 @@ struct trapframe;
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struct vmbus_message;
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struct vmbus_msghc;
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void vmbus_on_channel_open(const struct hv_vmbus_channel *);
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void vmbus_event_proc(struct vmbus_softc *, int);
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void vmbus_event_proc_compat(struct vmbus_softc *, int);
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void vmbus_handle_intr(struct trapframe *);
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@ -6,7 +6,6 @@
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KMOD= hv_vmbus
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SRCS= hv_channel.c \
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hv_channel_mgmt.c \
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hv_connection.c \
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hv_ring_buffer.c \
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hyperv.c \
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hyperv_busdma.c \
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