svn commit: r307020 - in stable/10/sys: conf dev/hyperv/vmbus modules/hyperv/vmbus
Sepherosa Ziehau
sephe at FreeBSD.org
Tue Oct 11 07:00:45 UTC 2016
Author: sephe
Date: Tue Oct 11 07:00:43 2016
New Revision: 307020
URL: https://svnweb.freebsd.org/changeset/base/307020
Log:
MFC 302636-302638,302692
302636
hyperv/vmbus: Move channel map to vmbus_softc
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D6982
302637
hyperv/vmbus: Remove needed bits
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7002
302638
hyperv/vmbus: Destroy channel list lock upon attach failure and detach.
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7003
302692
hyperv/vmbus: Merge hv_connection.c into hv_channel.c
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7004
Deleted:
stable/10/sys/dev/hyperv/vmbus/hv_connection.c
Modified:
stable/10/sys/conf/files.amd64
stable/10/sys/conf/files.i386
stable/10/sys/dev/hyperv/vmbus/hv_channel.c
stable/10/sys/dev/hyperv/vmbus/hv_channel_mgmt.c
stable/10/sys/dev/hyperv/vmbus/hv_vmbus_priv.h
stable/10/sys/dev/hyperv/vmbus/vmbus.c
stable/10/sys/dev/hyperv/vmbus/vmbus_var.h
stable/10/sys/modules/hyperv/vmbus/Makefile
Directory Properties:
stable/10/ (props changed)
Modified: stable/10/sys/conf/files.amd64
==============================================================================
--- stable/10/sys/conf/files.amd64 Tue Oct 11 06:46:24 2016 (r307019)
+++ stable/10/sys/conf/files.amd64 Tue Oct 11 07:00:43 2016 (r307020)
@@ -273,7 +273,6 @@ dev/hyperv/utilities/hv_timesync.c opt
dev/hyperv/utilities/hv_util.c optional hyperv
dev/hyperv/vmbus/hv_channel.c optional hyperv
dev/hyperv/vmbus/hv_channel_mgmt.c optional hyperv
-dev/hyperv/vmbus/hv_connection.c optional hyperv
dev/hyperv/vmbus/hv_ring_buffer.c optional hyperv
dev/hyperv/vmbus/hyperv.c optional hyperv
dev/hyperv/vmbus/hyperv_busdma.c optional hyperv
Modified: stable/10/sys/conf/files.i386
==============================================================================
--- stable/10/sys/conf/files.i386 Tue Oct 11 06:46:24 2016 (r307019)
+++ stable/10/sys/conf/files.i386 Tue Oct 11 07:00:43 2016 (r307020)
@@ -250,7 +250,6 @@ dev/hyperv/utilities/hv_timesync.c opt
dev/hyperv/utilities/hv_util.c optional hyperv
dev/hyperv/vmbus/hv_channel.c optional hyperv
dev/hyperv/vmbus/hv_channel_mgmt.c optional hyperv
-dev/hyperv/vmbus/hv_connection.c optional hyperv
dev/hyperv/vmbus/hv_ring_buffer.c optional hyperv
dev/hyperv/vmbus/hyperv.c optional hyperv
dev/hyperv/vmbus/hyperv_busdma.c optional hyperv
Modified: stable/10/sys/dev/hyperv/vmbus/hv_channel.c
==============================================================================
--- stable/10/sys/dev/hyperv/vmbus/hv_channel.c Tue Oct 11 06:46:24 2016 (r307019)
+++ stable/10/sys/dev/hyperv/vmbus/hv_channel.c Tue Oct 11 07:00:43 2016 (r307020)
@@ -52,6 +52,8 @@ __FBSDID("$FreeBSD$");
static void vmbus_channel_set_event(hv_vmbus_channel* channel);
static void VmbusProcessChannelEvent(void* channel, int pending);
+static void vmbus_chan_update_evtflagcnt(struct vmbus_softc *,
+ const struct hv_vmbus_channel *);
/**
* @brief Trigger an event notification on the specified channel
@@ -207,7 +209,7 @@ hv_vmbus_channel_open(
new_channel->on_channel_callback = pfn_on_channel_callback;
new_channel->channel_callback_context = context;
- vmbus_on_channel_open(new_channel);
+ vmbus_chan_update_evtflagcnt(sc, new_channel);
new_channel->rxq = VMBUS_PCPU_GET(new_channel->vmbus_sc, event_tq,
new_channel->target_cpu);
@@ -883,3 +885,95 @@ VmbusProcessChannelEvent(void* context,
} while (is_batched_reading && (bytes_to_read != 0));
}
}
+
+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 rel_id_base;
+ u_long flags;
+ int bit;
+
+ if (event_flags[f] == 0)
+ continue;
+
+ flags = atomic_swap_long(&event_flags[f], 0);
+ rel_id_base = f << VMBUS_EVTFLAG_SHIFT;
+
+ while ((bit = ffsl(flags)) != 0) {
+ struct hv_vmbus_channel *channel;
+ uint32_t rel_id;
+
+ --bit; /* NOTE: ffsl is 1-based */
+ flags &= ~(1UL << bit);
+
+ rel_id = rel_id_base + bit;
+ channel = sc->vmbus_chmap[rel_id];
+
+ /* if channel is closed or closing */
+ if (channel == NULL || channel->rxq == NULL)
+ continue;
+
+ if (channel->batched_reading)
+ hv_ring_buffer_read_begin(&channel->inbound);
+ taskqueue_enqueue(channel->rxq, &channel->channel_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->offer_msg.child_rel_id / VMBUS_EVTFLAG_LEN) + 1;
+ flag_cnt_ptr = VMBUS_PCPU_PTR(sc, event_flags_cnt, chan->target_cpu);
+
+ 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->offer_msg.child_rel_id,
+ chan->target_cpu, flag_cnt);
+ }
+ break;
+ }
+ }
+}
Modified: stable/10/sys/dev/hyperv/vmbus/hv_channel_mgmt.c
==============================================================================
--- stable/10/sys/dev/hyperv/vmbus/hv_channel_mgmt.c Tue Oct 11 06:46:24 2016 (r307019)
+++ stable/10/sys/dev/hyperv/vmbus/hv_channel_mgmt.c Tue Oct 11 07:00:43 2016 (r307020)
@@ -126,7 +126,7 @@ vmbus_channel_process_offer(hv_vmbus_cha
*/
printf("VMBUS: got channel0 offer\n");
} else {
- hv_vmbus_g_connection.channels[relid] = new_channel;
+ sc->vmbus_chmap[relid] = new_channel;
}
TAILQ_FOREACH(channel, &sc->vmbus_chlist, ch_link) {
@@ -354,10 +354,10 @@ vmbus_channel_on_offer_rescind(struct vm
rescind->child_rel_id);
}
- channel = hv_vmbus_g_connection.channels[rescind->child_rel_id];
+ channel = sc->vmbus_chmap[rescind->child_rel_id];
if (channel == NULL)
return;
- hv_vmbus_g_connection.channels[rescind->child_rel_id] = NULL;
+ sc->vmbus_chmap[rescind->child_rel_id] = NULL;
taskqueue_enqueue(taskqueue_thread, &channel->ch_detach_task);
}
@@ -454,8 +454,8 @@ hv_vmbus_release_unattached_channels(str
}
hv_vmbus_free_vmbus_channel(channel);
}
- bzero(hv_vmbus_g_connection.channels,
- sizeof(hv_vmbus_channel*) * VMBUS_CHAN_MAX);
+ bzero(sc->vmbus_chmap,
+ sizeof(struct hv_vmbus_channel *) * VMBUS_CHAN_MAX);
mtx_unlock(&sc->vmbus_chlist_lock);
}
Modified: stable/10/sys/dev/hyperv/vmbus/hv_vmbus_priv.h
==============================================================================
--- stable/10/sys/dev/hyperv/vmbus/hv_vmbus_priv.h Tue Oct 11 06:46:24 2016 (r307019)
+++ stable/10/sys/dev/hyperv/vmbus/hv_vmbus_priv.h Tue Oct 11 07:00:43 2016 (r307020)
@@ -97,25 +97,6 @@ typedef struct hv_vmbus_channel_packet_m
hv_vmbus_multipage_buffer range;
} __packed hv_vmbus_channel_packet_multipage_buffer;
-/*
- * VM Bus connection states
- */
-typedef enum {
- HV_DISCONNECTED,
- HV_CONNECTING,
- HV_CONNECTED,
- HV_DISCONNECTING
-} hv_vmbus_connect_state;
-
-typedef struct {
- hv_vmbus_connect_state connect_state;
-
- /**
- * channel table for fast lookup through id.
- */
- hv_vmbus_channel **channels;
-} hv_vmbus_connection;
-
typedef union {
uint32_t as_uint32_t;
struct {
@@ -177,12 +158,6 @@ typedef struct {
uint8_t rsvd_z4[1984];
} hv_vmbus_monitor_page;
-/**
- * Global variables
- */
-
-extern hv_vmbus_connection hv_vmbus_g_connection;
-
/*
* Private, VM Bus functions
*/
@@ -247,10 +222,4 @@ void hv_vmbus_child_device_register(st
int hv_vmbus_child_device_unregister(
struct hv_device *child_dev);
-/**
- * Connection interfaces
- */
-int hv_vmbus_connect(struct vmbus_softc *);
-int hv_vmbus_disconnect(void);
-
#endif /* __HYPERV_PRIV_H__ */
Modified: stable/10/sys/dev/hyperv/vmbus/vmbus.c
==============================================================================
--- stable/10/sys/dev/hyperv/vmbus/vmbus.c Tue Oct 11 06:46:24 2016 (r307019)
+++ stable/10/sys/dev/hyperv/vmbus/vmbus.c Tue Oct 11 07:00:43 2016 (r307020)
@@ -1212,6 +1212,9 @@ vmbus_doattach(struct vmbus_softc *sc)
sc->vmbus_gpadl = VMBUS_GPADL_START;
mtx_init(&sc->vmbus_chlist_lock, "vmbus chlist", NULL, MTX_DEF);
TAILQ_INIT(&sc->vmbus_chlist);
+ sc->vmbus_chmap = malloc(
+ sizeof(struct hv_vmbus_channel *) * VMBUS_CHAN_MAX, M_DEVBUF,
+ M_WAITOK | M_ZERO);
/*
* Create context for "post message" Hypercalls
@@ -1246,12 +1249,8 @@ vmbus_doattach(struct vmbus_softc *sc)
sc->vmbus_flags |= VMBUS_FLAG_SYNIC;
/*
- * Connect to VMBus in the root partition
+ * Initialize vmbus, e.g. connect to Hypervisor.
*/
- ret = hv_vmbus_connect(sc);
- if (ret != 0)
- goto cleanup;
-
ret = vmbus_init(sc);
if (ret != 0)
goto cleanup;
@@ -1281,7 +1280,9 @@ cleanup:
vmbus_msghc_ctx_destroy(sc->vmbus_msg_hc);
sc->vmbus_msg_hc = NULL;
}
+ free(sc->vmbus_chmap, M_DEVBUF);
mtx_destroy(&sc->vmbus_scan_lock);
+ mtx_destroy(&sc->vmbus_chlist_lock);
return (ret);
}
@@ -1342,7 +1343,6 @@ vmbus_detach(device_t dev)
hv_vmbus_release_unattached_channels(sc);
vmbus_disconnect(sc);
- hv_vmbus_disconnect();
if (sc->vmbus_flags & VMBUS_FLAG_SYNIC) {
sc->vmbus_flags &= ~VMBUS_FLAG_SYNIC;
@@ -1357,7 +1357,10 @@ vmbus_detach(device_t dev)
sc->vmbus_msg_hc = NULL;
}
+ free(sc->vmbus_chmap, M_DEVBUF);
mtx_destroy(&sc->vmbus_scan_lock);
+ mtx_destroy(&sc->vmbus_chlist_lock);
+
return (0);
}
Modified: stable/10/sys/dev/hyperv/vmbus/vmbus_var.h
==============================================================================
--- stable/10/sys/dev/hyperv/vmbus/vmbus_var.h Tue Oct 11 06:46:24 2016 (r307019)
+++ stable/10/sys/dev/hyperv/vmbus/vmbus_var.h Tue Oct 11 07:00:43 2016 (r307020)
@@ -74,6 +74,7 @@ struct vmbus_softc {
u_long *vmbus_rx_evtflags;
/* compat evtflgs from host */
+ struct hv_vmbus_channel **vmbus_chmap;
struct vmbus_msghc_ctx *vmbus_msg_hc;
struct vmbus_pcpu_data vmbus_pcpu[MAXCPU];
@@ -129,7 +130,6 @@ struct trapframe;
struct vmbus_message;
struct vmbus_msghc;
-void vmbus_on_channel_open(const struct hv_vmbus_channel *);
void vmbus_event_proc(struct vmbus_softc *, int);
void vmbus_event_proc_compat(struct vmbus_softc *, int);
void vmbus_handle_intr(struct trapframe *);
Modified: stable/10/sys/modules/hyperv/vmbus/Makefile
==============================================================================
--- stable/10/sys/modules/hyperv/vmbus/Makefile Tue Oct 11 06:46:24 2016 (r307019)
+++ stable/10/sys/modules/hyperv/vmbus/Makefile Tue Oct 11 07:00:43 2016 (r307020)
@@ -6,7 +6,6 @@
KMOD= hv_vmbus
SRCS= hv_channel.c \
hv_channel_mgmt.c \
- hv_connection.c \
hv_ring_buffer.c \
hyperv.c \
hyperv_busdma.c \
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