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OpenCloudOS-Kernel
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Vladimir Oltean c8c0ba4fe2 net: dsa: felix: setup MMIO filtering rules for PTP when using tag_8021q 
Since the tag_8021q tagger is software-defined, it has no means by
itself for retrieving hardware timestamps of PTP event messages.

Because we do want to support PTP on ocelot even with tag_8021q, we need
to use the CPU port module for that. The RX timestamp is present in the
Extraction Frame Header. And because we can't use NPI mode which redirects
the CPU queues to an "external CPU" (meaning the ARM CPU running Linux),
then we need to poll the CPU port module through the MMIO registers to
retrieve TX and RX timestamps.

Sadly, on NXP LS1028A, the Felix switch was integrated into the SoC
without wiring the extraction IRQ line to the ARM GIC. So, if we want to
be notified of any PTP packets received on the CPU port module, we have
a problem.

There is a possible workaround, which is to use the Ethernet CPU port as
a notification channel that packets are available on the CPU port module
as well. When a PTP packet is received by the DSA tagger (without timestamp,
of course), we go to the CPU extraction queues, poll for it there, then
we drop the original Ethernet packet and masquerade the packet retrieved
over MMIO (plus the timestamp) as the original when we inject it up the
stack.

Create a quirk in struct felix is selected by the Felix driver (but not
by Seville, since that doesn't support PTP at all). We want to do this
such that the workaround is minimally invasive for future switches that
don't require this workaround.

The only traffic for which we need timestamps is PTP traffic, so add a
redirection rule to the CPU port module for this. Currently we only have
the need for PTP over L2, so redirection rules for UDP ports 319 and 320
are TBD for now.

Note that for the workaround of matching of PTP-over-Ethernet-port with
PTP-over-MMIO queues to work properly, both channels need to be
absolutely lossless. There are two parts to achieving that:
- We keep flow control enabled on the tag_8021q CPU port
- We put the DSA master interface in promiscuous mode, so it will never
  drop a PTP frame (for the profiles we are interested in, these are
  sent to the multicast MAC addresses of 01-80-c2-00-00-0e and
  01-1b-19-00-00-00).

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2021-02-14 17:31:44 -08:00
..
accessibility speakup: fix uninitialized flush_lock 2020-12-09 15:38:13 +01:00
acpi Revert "ACPICA: Interpreter: fix memory leak by using existing buffer" 2021-02-08 13:46:53 +01:00
amba
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android Merge branch 'exec-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2020-12-15 19:29:43 -08:00
ata
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atm atm: idt77252: call pci_disable_device() on error path 2020-12-21 17:34:09 -08:00
auxdisplay
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base Driver core fixes for 5.11-rc5 2021-01-24 11:05:48 -08:00
bcma
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block xen/events: link interdomain events to associated xenbus device 2021-02-11 14:47:00 -08:00
bluetooth Bluetooth: hci_qca: Fixed issue during suspend 2021-02-08 14:54:07 +01:00
bus Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-02-10 13:30:12 -08:00
cdrom cdrom: Reset sector_size back it is not 2048. 2020-12-12 11:12:25 -07:00
char UAPI Changes: 2020-12-18 12:38:28 -08:00
clk A handful of clk driver fixes 2021-01-28 09:14:58 -08:00
clocksource asm-generic: cross-architecture timer cleanup 2020-12-16 00:07:17 -08:00
connector net/connector: Add const qualifier to cb_id 2020-12-16 11:06:49 -08:00
counter counter:ti-eqep: remove floor 2021-01-14 20:56:56 +00:00
cpufreq cpufreq: ACPI: Update arch scale-invariance max perf ratio if CPPC is not there 2021-02-08 13:45:51 +01:00
cpuidle ARM: SoC drivers for v5.11 2020-12-16 16:38:41 -08:00
crypto crypto: marvel/cesa - Fix tdma descriptor on 64-bit 2021-01-22 14:57:31 +11:00
dax libnvdimm for 5.11 2020-12-24 12:18:11 -08:00
dca
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devfreq Merge branches 'pm-devfreq' and 'pm-tools' 2020-12-15 15:27:16 +01:00
dio
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dma dmaengine dw: Revert "dmaengine: dw: Enable runtime PM" 2021-02-08 17:36:12 +05:30
dma-buf dma-buf: cma_heap: Fix memory leak in CMA heap 2021-01-10 23:08:21 +05:30
edac Merge branch 'akpm' (patches from Andrew) 2020-12-15 12:53:37 -08:00
eisa
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extcon extcon: max77693: Fix modalias string 2020-12-11 17:18:10 +09:00
firewire
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firmware A single EFI fix from Lukas: 2021-01-31 11:57:37 -08:00
fpga Merge 5.10-rc7 into char-misc-next 2020-12-07 10:08:14 +01:00
fsi hwmon patches for v5.11 2020-12-15 16:06:14 -08:00
gnss
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gpio gpio: gpiolib: remove shadowed variable 2021-02-01 13:24:28 +01:00
gpu Merge tag 'drm-intel-fixes-2021-02-04' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes 2021-02-05 11:03:28 +10:00
greybus
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hid HID: wacom: Correct NULL dereference on AES pen proximity 2021-01-26 11:53:53 +01:00
hsi HSI: core: fix a kernel-doc markup 2020-12-02 22:35:44 +01:00
hv x86/hyperv: Fix kexec panic/hang issues 2021-01-05 17:52:04 +00:00
hwmon hwmon: (amd_energy) fix allocation of hwmon_channel_info config 2021-01-08 07:31:03 -08:00
hwspinlock hwspinlock: sirf: Remove the redundant 'of_match_ptr' 2020-12-10 13:34:40 -06:00
hwtracing intel_th: pci: Add Alder Lake-P support 2021-01-21 18:54:43 +01:00
i2c i2c: mediatek: Move suspend and resume handling to NOIRQ phase 2021-01-28 10:54:45 +01:00
i3c i3c/master/mipi-i3c-hci: Fix position of __maybe_unused in i3c_hci_of_match 2020-12-31 18:41:37 +01:00
ide SCSI fixes on 20210101 2021-01-01 12:58:07 -08:00
idle intel_idle: add SnowRidge C-state table 2020-12-30 18:25:34 +01:00
iio iio: sx9310: Fix semtech,avg-pos-strength setting when > 16 2021-01-14 21:01:22 +00:00
infiniband Revert "RDMA/rxe: Remove VLAN code leftovers from RXE" 2021-01-20 13:29:28 -04:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2021-02-06 14:57:23 -08:00
interconnect interconnect: imx8mq: Use icc_sync_state 2020-12-28 14:03:02 +02:00
iommu iommu/vt-d: Do not use flush-queue when caching-mode is on 2021-01-28 13:59:02 +01:00
ipack
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irqchip irqchip fixes for 5.11, take #1 2021-01-12 21:23:55 +01:00
isdn misdn: dsp: select CONFIG_BITREVERSE 2021-01-05 15:50:36 -08:00
leds leds: rt8515: Add Richtek RT8515 LED driver 2021-01-31 10:38:03 +01:00
lightnvm lightnvm: fix memory leak when submit fails 2021-01-21 05:45:51 -07:00
macintosh macintosh/adb-iop: Send correct poll command 2020-12-07 10:48:16 +01:00
mailbox mailbox: arm_mhuv2: Add driver 2020-12-09 19:26:02 -06:00
mcb
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md block-5.11-2021-01-29 2021-01-29 13:50:06 -08:00
media media: rockchip: rkisp1: extend uapi array sizes 2021-01-28 11:31:43 +01:00
memory Merge tag 'memory-controller-drv-tegra-5.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-mem-ctrl into arm/drivers 2020-12-09 00:40:02 +01:00
memstick memstick: r592: Fix error return in r592_probe() 2020-12-04 12:27:10 +01:00
message SCSI misc on 20201216 2020-12-16 13:34:31 -08:00
mfd mfd: ab8500-debugfs: Remove extraneous seq_putc 2020-12-26 09:19:49 -08:00
misc misc: rtsx: init value of aspm_enabled 2021-01-22 11:04:53 +01:00
mmc mmc: sdhci-pltfm: Fix linking err for sdhci-brcmstb 2021-02-01 11:13:09 +01:00
most
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mtd mtd: rawnand: omap: Use BCH private fields in the specific OOB layout 2021-01-20 23:38:00 +01:00
mux
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net net: dsa: felix: setup MMIO filtering rules for PTP when using tag_8021q 2021-02-14 17:31:44 -08:00
nfc nfc: st-nci: Remove unnecessary variable 2021-02-08 14:56:20 -08:00
ntb Big fix for IDT NTB and Intel NTB LTR management support 2020-12-27 09:22:55 -08:00
nubus
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nvdimm libnvdimm/dimm: Avoid race between probe and available_slots_show() 2021-02-01 16:20:40 -08:00
nvme nvmet-tcp: fix out-of-bounds access when receiving multiple h2cdata PDUs 2021-02-03 16:57:36 +01:00
nvmem nvmem: imx-ocotp: add support for the unaliged word count 2020-11-27 16:10:07 +01:00
of of/device: Update dma_range_map only when dev has valid dma-ranges 2021-01-27 14:00:14 -06:00
opp opp: Call the missing clk_put() on error 2020-12-28 10:56:22 +05:30
oprofile
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parisc
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parport
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pci Revert "PCI/ASPM: Save/restore L1SS Capability for suspend/resume" 2021-01-27 10:12:43 -06:00
pcmcia Merge branch 'pcmcia-next' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linux 2020-12-19 12:50:10 -08:00
perf Revert "arm64: Enable perf events based hard lockup detector" 2021-01-13 15:08:41 +00:00
phy phy: mediatek: allow compile-testing the dsi phy 2021-01-04 13:00:54 +05:30
pinctrl pinctrl: qcom: Don't clear pending interrupts when enabling 2021-01-18 16:07:08 +01:00
platform platform/x86: dell-wmi-sysman: fix a NULL pointer dereference 2021-01-31 22:05:35 +01:00
pnp
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power power: supply: Fix a typo in warning message 2020-12-13 01:00:10 +01:00
powercap Merge branches 'pm-sleep', 'pm-acpi', 'pm-domains' and 'powercap' 2020-12-15 15:26:14 +01:00
pps
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ps3 powerpc/ps3: use dma_mapping_error() 2020-12-15 22:50:12 +11:00
ptp ptp: ptp_ines: prevent build when HAS_IOMEM is not set 2021-01-06 16:17:23 -08:00
pwm pwm: Changes for v5.11-rc1 2020-12-19 11:51:32 -08:00
rapidio rapidio: remove unused rio_get_asm() and rio_get_device() 2020-12-15 22:46:18 -08:00
ras
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regulator regulator: Fix lockdep warning resolving supplies 2021-01-22 14:03:07 +00:00
remoteproc ARM: SoC drivers for v5.11 2020-12-16 16:38:41 -08:00
reset ARM: SoC drivers for v5.11 2020-12-16 16:38:41 -08:00
rpmsg rpmsg: Turn name service into a stand alone driver 2020-11-24 10:11:59 -06:00
rtc rtc: mc146818: Dont test for bit 0-5 in Register D 2021-02-02 20:35:02 +01:00
s390 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-02-02 14:21:31 -08:00
sbus
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scsi scsi: lpfc: Fix EEH encountering oops with NVMe traffic 2021-01-29 13:41:39 -05:00
sfi
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sh sh/intc: Restore devm_ioremap() alignment 2021-01-06 19:55:29 -05:00
siox siox: Make remove callback return void 2020-12-10 16:17:15 +01:00
slimbus slimbus: qcom: fix potential NULL dereference in qcom_slim_prg_slew() 2020-12-10 16:23:56 +01:00
soc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-02-10 13:30:12 -08:00
soundwire soundwire: intel: fix another unused-function warning 2020-12-05 13:11:54 +05:30
spi spidev: Add cisco device compatible 2021-01-25 12:53:48 +00:00
spmi spmi: Add driver shutdown support 2020-12-10 10:45:36 +01:00
ssb
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staging net: switchdev: pass flags and mask to both {PRE_,}BRIDGE_FLAGS attributes 2021-02-12 17:08:04 -08:00
target SCSI fixes on 20210130 2021-01-30 17:42:42 -08:00
tc
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tee tee: optee: replace might_sleep with cond_resched 2021-01-21 10:36:48 +01:00
thermal - Add Alder Lake support ACPI ids (Srinivas Pandruvada) 2020-12-18 12:19:37 -08:00
thunderbolt thunderbolt: Fix possible NULL pointer dereference in tb_acpi_add_link() 2021-01-28 15:30:57 +03:00
tty tty: avoid using vfs_iocb_iter_write() for redirected console writes 2021-01-29 13:12:17 -08:00
uio uio: uio_hv_generic: use devm_kzalloc() for private data alloc 2020-12-09 19:59:00 +01:00
usb usb: dwc2: Fix endpoint direction check in ep_from_windex 2021-02-05 10:28:38 +01:00
vdpa vdpa/mlx5: Restore the hardware used index after change map 2021-02-05 10:28:04 -05:00
vfio ARM: 2020-12-20 10:44:05 -08:00
vhost vhost_net: avoid tx queue stuck when sendmsg fails 2021-01-19 11:13:30 -08:00
video UAPI Changes: 2020-12-18 12:38:28 -08:00
virt
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virtio virtio,vdpa: features, cleanups, fixes 2020-12-24 12:06:46 -08:00
visorbus
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vlynq
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vme vme: switch from 'pci_' to 'dma_' API 2020-12-09 19:44:34 +01:00
w1
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watchdog linux-watchdog 5.11-rc1 tag 2020-12-23 15:01:49 -08:00
xen xen/events: link interdomain events to associated xenbus device 2021-02-11 14:47:00 -08:00
zorro
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Kconfig
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Makefile asm-generic: cross-architecture timer cleanup 2020-12-16 00:07:17 -08:00