mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-16 21:57:31 +07:00
7d10001e20
Add a PTP clock driver called ptp_vmw, for guests running on VMware ESXi hypervisor. The driver attaches to a VMware virtual device called "precision clock" that provides a mechanism for querying host system time. Similar to existing virtual PTP clock drivers (e.g. ptp_kvm), ptp_vmw utilizes the kernel's PTP hardware clock API to implement a clock device that can be used as a reference in Chrony for synchronizing guest time with host. The driver is only applicable to x86 guests running in VMware virtual machines with precision clock virtual device present. It uses a VMware specific hypercall mechanism to read time from the device. Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Vivek Thampi <vithampi@vmware.com> Signed-off-by: David S. Miller <davem@davemloft.net>
155 lines
5.0 KiB
Plaintext
155 lines
5.0 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
|
|
#
|
|
# PTP clock support configuration
|
|
#
|
|
|
|
menu "PTP clock support"
|
|
|
|
config PTP_1588_CLOCK
|
|
tristate "PTP clock support"
|
|
depends on NET && POSIX_TIMERS
|
|
select PPS
|
|
select NET_PTP_CLASSIFY
|
|
help
|
|
The IEEE 1588 standard defines a method to precisely
|
|
synchronize distributed clocks over Ethernet networks. The
|
|
standard defines a Precision Time Protocol (PTP), which can
|
|
be used to achieve synchronization within a few dozen
|
|
microseconds. In addition, with the help of special hardware
|
|
time stamping units, it can be possible to achieve
|
|
synchronization to within a few hundred nanoseconds.
|
|
|
|
This driver adds support for PTP clocks as character
|
|
devices. If you want to use a PTP clock, then you should
|
|
also enable at least one clock driver as well.
|
|
|
|
To compile this driver as a module, choose M here: the module
|
|
will be called ptp.
|
|
|
|
config PTP_1588_CLOCK_DTE
|
|
tristate "Broadcom DTE as PTP clock"
|
|
depends on PTP_1588_CLOCK
|
|
depends on NET && HAS_IOMEM
|
|
depends on ARCH_BCM_MOBILE || (ARCH_BCM_IPROC && !(ARCH_BCM_NSP || ARCH_BCM_5301X)) || COMPILE_TEST
|
|
default y
|
|
help
|
|
This driver adds support for using the Digital timing engine
|
|
(DTE) in the Broadcom SoC's as a PTP clock.
|
|
|
|
The clock can be used in both wired and wireless networks
|
|
for PTP purposes.
|
|
|
|
To compile this driver as a module, choose M here: the module
|
|
will be called ptp_dte.
|
|
|
|
config PTP_1588_CLOCK_QORIQ
|
|
tristate "Freescale QorIQ 1588 timer as PTP clock"
|
|
depends on GIANFAR || FSL_DPAA_ETH || FSL_DPAA2_ETH || FSL_ENETC || FSL_ENETC_VF || COMPILE_TEST
|
|
depends on PTP_1588_CLOCK
|
|
default y
|
|
help
|
|
This driver adds support for using the Freescale QorIQ 1588
|
|
timer as a PTP clock. This clock is only useful if your PTP
|
|
programs are getting hardware time stamps on the PTP Ethernet
|
|
packets using the SO_TIMESTAMPING API.
|
|
|
|
To compile this driver as a module, choose M here: the module
|
|
will be called ptp-qoriq.
|
|
|
|
comment "Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks."
|
|
depends on PHYLIB=n || NETWORK_PHY_TIMESTAMPING=n
|
|
|
|
config DP83640_PHY
|
|
tristate "Driver for the National Semiconductor DP83640 PHYTER"
|
|
depends on NETWORK_PHY_TIMESTAMPING
|
|
depends on PHYLIB
|
|
depends on PTP_1588_CLOCK
|
|
---help---
|
|
Supports the DP83640 PHYTER with IEEE 1588 features.
|
|
|
|
This driver adds support for using the DP83640 as a PTP
|
|
clock. This clock is only useful if your PTP programs are
|
|
getting hardware time stamps on the PTP Ethernet packets
|
|
using the SO_TIMESTAMPING API.
|
|
|
|
In order for this to work, your MAC driver must also
|
|
implement the skb_tx_timestamp() function.
|
|
|
|
config PTP_1588_CLOCK_INES
|
|
tristate "ZHAW InES PTP time stamping IP core"
|
|
depends on NETWORK_PHY_TIMESTAMPING
|
|
depends on PHYLIB
|
|
depends on PTP_1588_CLOCK
|
|
help
|
|
This driver adds support for using the ZHAW InES 1588 IP
|
|
core. This clock is only useful if the MII bus of your MAC
|
|
is wired up to the core.
|
|
|
|
config PTP_1588_CLOCK_PCH
|
|
tristate "Intel PCH EG20T as PTP clock"
|
|
depends on X86_32 || COMPILE_TEST
|
|
depends on HAS_IOMEM && NET
|
|
imply PTP_1588_CLOCK
|
|
help
|
|
This driver adds support for using the PCH EG20T as a PTP
|
|
clock. The hardware supports time stamping of PTP packets
|
|
when using the end-to-end delay (E2E) mechanism. The peer
|
|
delay mechanism (P2P) is not supported.
|
|
|
|
This clock is only useful if your PTP programs are getting
|
|
hardware time stamps on the PTP Ethernet packets using the
|
|
SO_TIMESTAMPING API.
|
|
|
|
To compile this driver as a module, choose M here: the module
|
|
will be called ptp_pch.
|
|
|
|
config PTP_1588_CLOCK_KVM
|
|
tristate "KVM virtual PTP clock"
|
|
depends on PTP_1588_CLOCK
|
|
depends on KVM_GUEST && X86
|
|
default y
|
|
help
|
|
This driver adds support for using kvm infrastructure as a PTP
|
|
clock. This clock is only useful if you are using KVM guests.
|
|
|
|
To compile this driver as a module, choose M here: the module
|
|
will be called ptp_kvm.
|
|
|
|
config PTP_1588_CLOCK_IDT82P33
|
|
tristate "IDT 82P33xxx PTP clock"
|
|
depends on PTP_1588_CLOCK && I2C
|
|
default n
|
|
help
|
|
This driver adds support for using the IDT 82P33xxx as a PTP
|
|
clock. This clock is only useful if your time stamping MAC
|
|
is connected to the IDT chip.
|
|
|
|
To compile this driver as a module, choose M here: the module
|
|
will be called ptp_idt82p33.
|
|
|
|
config PTP_1588_CLOCK_IDTCM
|
|
tristate "IDT CLOCKMATRIX as PTP clock"
|
|
depends on PTP_1588_CLOCK && I2C
|
|
default n
|
|
help
|
|
This driver adds support for using IDT CLOCKMATRIX(TM) as a PTP
|
|
clock. This clock is only useful if your time stamping MAC
|
|
is connected to the IDT chip.
|
|
|
|
To compile this driver as a module, choose M here: the module
|
|
will be called ptp_clockmatrix.
|
|
|
|
config PTP_1588_CLOCK_VMW
|
|
tristate "VMware virtual PTP clock"
|
|
depends on ACPI && HYPERVISOR_GUEST && X86
|
|
depends on PTP_1588_CLOCK
|
|
help
|
|
This driver adds support for using VMware virtual precision
|
|
clock device as a PTP clock. This is only useful in virtual
|
|
machines running on VMware virtual infrastructure.
|
|
|
|
To compile this driver as a module, choose M here: the module
|
|
will be called ptp_vmw.
|
|
|
|
endmenu
|