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hyperv/vmbus: Update VMBus version 4.0 and 5.0 support.

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Add VMBus protocol version 4.0. and 5.0 to support Windows 10 and newer HyperV hosts.

For VMBus 4.0 and newer HyperV, the netvsc gpadl teardown must be done after vmbus close.

Submitted by:	whu
MFC after:	2 weeks
Sponsored by:	Microsoft
This commit is contained in:
Wei Hu 2019-07-09 07:24:18 +00:00
parent fa7c4b1cb3
commit ace5ce7e70
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=349856
5 changed files with 47 additions and 2 deletions
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5
sys/dev/hyperv/include/hyperv.h
View File

@ -94,6 +94,11 @@ extern hyperv_tc64_t hyperv_tc64;
extern u_int hyperv_features; /* CPUID_HV_MSR_ */
extern u_int hyperv_ver_major;
/*
* Vmbus version after negotiation with host.
*/
extern uint32_t vmbus_current_version;
#endif /* _KERNEL */
#endif /* _HYPERV_H_ */

4
sys/dev/hyperv/include/vmbus.h
View File

@ -40,11 +40,15 @@
* 1.1 -- Windows 7
* 2.4 -- Windows 8
* 3.0 -- Windows 8.1
* 4.0 -- Windows 10
* 5.0 -- Newer Windows 10
*/
#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_WIN10 ((4 << 16) | (0))
#define VMBUS_VERSION_WIN10_V5 ((5 << 16) | (0))
#define VMBUS_VERSION_MAJOR(ver) (((uint32_t)(ver)) >> 16)
#define VMBUS_VERSION_MINOR(ver) (((uint32_t)(ver)) & 0xffff)

4
sys/dev/hyperv/netvsc/hn_nvs.c
View File

@ -365,7 +365,7 @@ hn_nvs_disconn_rxbuf(struct hn_softc *sc)
pause("lingtx", (200 * hz) / 1000);
}
if (sc->hn_rxbuf_gpadl != 0) {
if (vmbus_current_version < VMBUS_VERSION_WIN10 && sc->hn_rxbuf_gpadl != 0) {
/*
* Disconnect RXBUF from primary channel.
*/
@ -426,7 +426,7 @@ hn_nvs_disconn_chim(struct hn_softc *sc)
pause("lingtx", (200 * hz) / 1000);
}
if (sc->hn_chim_gpadl != 0) {
if (vmbus_current_version < VMBUS_VERSION_WIN10 && sc->hn_chim_gpadl != 0) {
/*
* Disconnect chimney sending buffer from primary channel.
*/

32
sys/dev/hyperv/netvsc/if_hn.c
View File

@ -6630,6 +6630,38 @@ hn_synth_detach(struct hn_softc *sc)
/* Detach all of the channels. */
hn_detach_allchans(sc);
if (vmbus_current_version >= VMBUS_VERSION_WIN10 && sc->hn_rxbuf_gpadl != 0) {
/*
* Host is post-Win2016, disconnect RXBUF from primary channel here.
*/
int error;
error = vmbus_chan_gpadl_disconnect(sc->hn_prichan,
sc->hn_rxbuf_gpadl);
if (error) {
if_printf(sc->hn_ifp,
"rxbuf gpadl disconn failed: %d\n", error);
sc->hn_flags |= HN_FLAG_RXBUF_REF;
}
sc->hn_rxbuf_gpadl = 0;
}
if (vmbus_current_version >= VMBUS_VERSION_WIN10 && sc->hn_chim_gpadl != 0) {
/*
* Host is post-Win2016, disconnect chimney sending buffer from
* primary channel here.
*/
int error;
error = vmbus_chan_gpadl_disconnect(sc->hn_prichan,
sc->hn_chim_gpadl);
if (error) {
if_printf(sc->hn_ifp,
"chim gpadl disconn failed: %d\n", error);
sc->hn_flags |= HN_FLAG_CHIM_REF;
}
sc->hn_chim_gpadl = 0;
}
sc->hn_flags &= ~HN_FLAG_SYNTH_ATTACHED;
}

4
sys/dev/hyperv/vmbus/vmbus.c
View File

@ -138,7 +138,10 @@ SYSCTL_INT(_hw_vmbus, OID_AUTO, pin_evttask, CTLFLAG_RDTUN,
extern inthand_t IDTVEC(vmbus_isr), IDTVEC(vmbus_isr_pti);
uint32_t vmbus_current_version;
static const uint32_t vmbus_version[] = {
VMBUS_VERSION_WIN10,
VMBUS_VERSION_WIN8_1,
VMBUS_VERSION_WIN8,
VMBUS_VERSION_WIN7,
@ -412,6 +415,7 @@ vmbus_init(struct vmbus_softc *sc)
error = vmbus_connect(sc, vmbus_version[i]);
if (!error) {
vmbus_current_version = vmbus_version[i];
sc->vmbus_version = vmbus_version[i];
device_printf(sc->vmbus_dev, "version %u.%u\n",
VMBUS_VERSION_MAJOR(sc->vmbus_version),