commit 3d0fda90

 upstream.

Ensure that critical setting can only be configured when there are no
running netdevs - all ports are down.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

commit 7d58d3eb

 upstream.

Skip HW configuration when p0-rx-ptype-rrobin is changed as it will be done
by .ndev_open(),

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

commit d6d0aeaf

 upstream.

The MAC SL has to be initialized for each port otherwise
am65_cpsw_nuss_slave_disable_unused() will crash for disabled ports.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

commit 51824048

 upstream.

The pf_p0_rx_ptype_rrobin is global parameter so move its initialization in
probe.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

commit f362b70b upstream.

Make use of the struct_size() helper instead of an open-coded version
in order to avoid any potential type mistakes. Also, remove unnecessary
variable _size_.

This code was detected with the help of Coccinelle and, audited and
fixed manually.

Addresses-KSPP-ID: https://github.com/KSPP/linux/issues/83


Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

commit a45cfcc6

 upstream.

The MCU CPSW expected to populate only MDIO device, but follow up patches
will add "compatible" property to the MCU CPSW CPTS node which will cause
creation of CPTS device and MCU CPSW init failure. Hence, switch to use
of_platform_device_create() instead of of_platform_populate() for MDIO
device population.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

commit a9a495d5

 upstream.

Sync MCU CPSW DT bindings to LKML version as max as possible.
Used initial LKML commit to identify that code already upstream.

Note. yaml required some additional work and not critical at this stage.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>

commit ba86a6e9

 upstream.

Sync MCU CPSW to LKML version as max as possible.
Used initial LKML commit to identify that code already upstream.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>

commit ae7fdac8

 upstream.

Sync MCU CPSW to LKML version as max as possible.
Used initial LKML commit to identify that code already upstream.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>

commit 93a76530

 upstream.

Sync MCU CPSW code to LKML version as max as possible.
Used initial LKML commit to identify that code already upstream.

It will break networking due to binding changes which will be fixed by
following patches.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>

TI-Feature: connectivity
TI-Branch: connectivity-ti-linux-5.4.y

* 'connectivity-ti-linux-5.4.y' of ssh://bitbucket.itg.ti.com/lcpdpublicdom/connectivity

: (37 commits)
  net: ti: prueth_core: hsr/prp: VLAN filter to receive tagged SV frames
  net: ti: prueth_core: hsr/prp: add Multicast filtering
  net: ti: prueth_core: hsr/prp: add VLAN filtering
  net: ti: prueth_core: hsr/prp: update for ethtool stats support
  net: ti: prueth_core: add helper functions to support lre offload
  ARM: dts: am335x-icev2: add interrupts for HSR/PRP queue interrupts
  ARM: dts: am437x: add interrupts for HSR/PRP queue interrupts
  ARM: dts: am57x: add interrupts for hsr/prp queue interrupts
  net: ti: prueth_core: hsr/prp: add NSP support
  net: ti: prueth_core: hsr/prp: add ethtool command to switch Ethenet type
  net: ti: prueth_core: add HSR/PRP driver
  dt-bindings: net: ti-prueth: Add interrupt properties for HSR/PRP
  net: ti: prueth_core: add HSR/PRP firmware specific init functions
  net: ti: prueth_core: hsr/prp: set mux_sel and Min/Max frame sizes
  net: ti: prueth_core: move timer utility functions to prueth_core
  net: ti: prueth_core: move prueth_hostinit() to inside ndo_open()
  ARM: dts: am437x-idk : remove firmware-name from DTS
  ARM: dts: am335x-icev2 : remove firmware-name from DTS
  ARM: dts: k2g-ice : remove firmware-name from DTS
  ARM: dts: am57xx-idk : remove firmware-name from DTS
  ...

Signed-off-by: LCPD Auto Merger <lcpd_integration@list.ti.com>

HSR/PRP networks may use VLAN for management messages such as that
for sending and receiving tagged supervision frames. So implement
lredev_set_sv_vlan_id() ops of the LRE offloaded device to
add VLAN filter entry for receiving these tagged frames.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>

Similar to Dual EMAC firmware, HSR/PRP (LRE) firmware also
supports a hashed Multicast filter table of 256 entries.
This patch extends the MC filtering support to HSR/PRP Ethernet
types. This is a shared table for LRE. So protect access
using a spinlock.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>

This patch add VLAN filtering support for LRE offload. VLAN table
has 512 entries with 8 VIDs supported per entry. It is a shared
table. So use a spinlock to protect access.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>

This patch adds Link Redundancy Entity (LRE) stats through ethtool
command.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>

Firmware requires node table entries to be inserted by driver to save
PRU cycles for packet processing. Node table provides a view of remote
nodes in the network. The nodes send supervision frames periodically
with its own mac address and the same is processed by firmware. First
firmware lookup the source MAC address. If not found, it indicates a
flag in the descriptor which driver uses to insert the MAC address
in the node table. The rx packet processing code kicks a worker thread
to insert the mac address. This patch adds the required function to
do the insert function and also clear the table on demand.

Firmware also requires driver to run a timer for 10 msec to update
check flags in dram for firmware to do periodic table maintenance
functions for LRE offload. So change basic timer period to 10 msec
and use a counter to track the NSP timer which needs to be done every
100 msec.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>

This adds interrupts property for HSR/PRP priority queue interrupts
for the supported platforms.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>

This adds interrupts property for HSR/PRP priority queue interrupts
for the supported platforms.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>

This adds interrupts property for hsr/prp priority queue interrupts
for the supported platforms.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>

For HSR/PRP the timer has to be run at 10 msec due to requirement
to support offload function in firmware. So run the basic timer
at 10 msec when Ethernet type is HSR/PRP and use a counter to count
100 msec for NSP timer. Keep the basic timer at 100 msec when in
Dual EMAC mode to reduce CPU cycle usage.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>

PRUETH driver now supports Dual EMAC/HSR/PRP/SWITCH Ethernet types.
The user requires to switch between these Ethernet types at run time
without rebooting the device. This patch introduces Ethtool -K option to
switch the Ethernet types between Dual EMAC/HSR/PRP Ethernet types.
User first bring down the interface and then set the HSR or PRP offload
flag in the Ethernet device using ethtool -K option. Then bring up the
Ethernet interfaces and setup the HSR/PRP interface using ip link command.

For example to Switch from Dual EMAC to HSR, user do

   ifconfig eth2 down
   ifconfig eth3 down
   ifconfig eth2 hw ether <MAC Addr>
   ifconfig eth3 hw ether <MAC Addr>
   ethtool -K eth2 hsr-rx-offload on
   ethtool -K eth3 hsr-rx-offload on

Now ready to create hsr interface as

   ip link add name hsr0 type hsr slave1 eth2 slave2 eth3 supervision 45
     version 1

   Similarly to switch from Dual EMAC to prp user do similar steps

   ifconfig eth2 down
   ifconfig eth3 down
   ifconfig eth2 hw ether <MAC Addr>
   ifconfig eth3 hw ether <MAC Addr>
   ethtool -K eth2 prp-rx-offload on
   ethtool -K eth3 prp-rx-offload on

   ip link add name prp0 type hsr slave1 eth2 slave2 eth3 supervision 45
    proto 1

To switch back to Dual EMAC, user clear the respective flags through
ethtool command and bring up the interface. Switching between HSR and
PRP is done in a  similar way. First needs to reset the existing flag
and then set the new flag before creating the hsr/prp interface.

User is not allowed to switch between Switch and HSR/PRP. To switch,
user first needs to change to Dual EMAC eth type and then do the
switching of ethtype. Driver continues to support the existing method
for switching between Dual EMAC and Switch eth types.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>

HSR/PRP is a industrial Ethernet protocol defined by IEC 62439
standard. Both use 6 bytes of protocol bytes to implement redundancy.
This consists of 2 bytes of sequence number, 1 byte of Ethernet
type identifying the protocol and LSDU length and pathid/network id
bits. Link Redundancy Entity (LRE) implements 1) duplication of Ethernet
frames at Egress and 2) discard of duplicates at the ingress and 3)
processing of Supervision frames to build the Node Table information.
Node table contains the health status of remote nodes in the network.

HSR/PRP driver offload part of LRE function. In the current version of
the firmware 2 & 3 are offloaded to PRU firmware. 1) is still performed
by upper HSR/PRP driver under net/hsr. This patch initialize the firmware
based on the Ethernet type. HSR/PRP firmware uses same memory map as
Switch firmware. So all places in the driver that initializes the basic
Switch firmware is re-used for HSR/PRP as well using the
!PRUETH_IS_EMAC() macro. Any HSR/PRP specific function is initialized
under PRUETH_IS_LRE() macro.

This update support both v1.0 and v2.1 of the ICSS firmware by using fw
offsets that are assigned at probe based on platform. A list of firmware
names are also picked at probe and then based on ethtype appropriate
firmware is picked to load on the PRUs. For Packet handling, NAPI is used
at at Ingress. There are two pair of Queues at the Ingress for each port.
Low priority and High priority. A NAPI instance is added for each of the
priority queue. An interrupt is raised by firmware when packets are
en-queued to one of the priority queue. red_emac_rx_packets() ensures that
packets are scanned from both queues at a specific priority and sends
them to network stack based on timestamp associated with the packet. At
the egress, packets are en-queued based on pcp bits. There are 2 queues
per port and other queues are for port to port traffic.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>

This document the bindings update to support HSR/PRP offload in
PRUETH driver.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>

This patch adds HSR/PRP Ethernet specific firmware init/config
functions, firmware header files, data types etc.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>

As an preparatory patch to support other Ethernet types in the driver,
driver needs to configure min/max frame sizes in MII_RT registers as
well as MUX_SEL as part of prueth_mii_init(). It is expected that this
function gets called in ndo_open() and Ethernet type may be different
than EMAC or SWITCH.  So update prueth_mii_init() to configure the
values for High Seamless Redundancy (HSR) and Parallel Redundancy
Protocol (PRP) Ethernet types. HSR and PRP are two industrial
protocols that operates at Layer 2 to implement redundancy. They
extend the frame size by 6 octets of protocol bytes at Layer 2.
Thus update the max frame size for these Ethernet types in
MII_RT_RX_FRMS. As standard management frames are expected to be
received as well, min frame size remains unaffected.
Introduce a new macro PRUETH_IS_LRE() to check for HSR or PRP
and use that to configure the Max frame value differently. Link
Redundancy Entity (LRE) is the common function in HSR and PRP that
implements redundancy for HSR and PRP. Also MUX_SEL reg values
are same for HSR, PRP and SWITCH. So adjust the code accordingly.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>

As a preparatory patch to introduce additional Ethernet types in
the driver that also requires timer related functions, it is cleaner
to have timer related main code in prueth_core driver and on event
make calls to appropriate firmware specific functions as needed. So
this add a function prueth_enable_nsp(), to configure storm prevention
and define the same in prueth_qos.c. On timeout, call prueth_enable_nsp()
to configure storm prevention feature.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>

As preparatory patch to introduce support for additional Ethernet
types, move prueth_hostinit() to inside ndo_open() as prueth_hostinit()
is common across all Ethernet types and make sense to do it as part
of ndo_open() since driver needs to support run time changing of
Ethernet type. Currently Ethernet type is set inside
prueth_change_to_switch_mode() or prueth_change_to_emac_mode() and
prueth_hostinit() is invoked there. So move this to inside ndo_open().
Now that driver always do rproc_set_firmware() in ndo_open() based on
Ethernet type, remove the restore of firmware names to EMAC firmware
in prueth_sw_shutdown_prus().

For switch based firmwarem there are common resources to be
initialized when the first port is initialized which are done part
of prueth_hostinit(). So introduce a mutex to enter the critical
region inside ndo_open() for initialization and in ndo_stop()
when last port is down. Also set emac_configured at the end after
the port is enabled and use proper input to prueth_port_enable()
call.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>

Now that driver lists the firmware names, remove this from the
dts.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>

Now that driver lists the firmware names, remove this from the
dts.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>

Now that driver lists the firmware names, remove this from the
dts.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>

Now that driver lists the firmware names, remove this from the
dts.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>

Use functions to initialize the fdb table and to free the memory and
move the code to prueth_switch.c. While at it place the fdb init
function ahead of booting the PRUs as this memory is used by PRU.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>

Now that firmware filenames are listed in the driver as a static
table, remove this from DTS. So update the documentation accordingly.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>

Remove firmware filename usage in dts and use compatibility private data
to specify firmware files names in the driver as driver is expected to
support run time change of Ethernet type in which case file name has to
be determined dynamically when network device is opened as Ethernet type
can be other than Dual EMAC. As file names are dependent on the platform
and Ethernet type, introduce an array to hold these names and use in the
driver. While at it move the macros to check Ethernet type to common
header file prueth.h as it this is common across all Ethernet types

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>

Many functions such as prueth_hostconfig(), prueth_hostinit() doesn't
return any error code and can be void. Fix the return type to void
in such cases. Also check for return type of prueth_sw_emac_config()
since the function has a return value.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>

if driver is in single emac mode, then nsp code will crash because
there is no check for emac ptr. So fix it by adding a check for
null ptr.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>

tx irq is optional in the driver. So remove the same from dts
to get a better egress performance for small size frames.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>

tx irq is optional in the driver. So remove the same from dts
to get a better egress performance for small size frames.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>

tx irq is optional in the driver. So remove the same from dts
to get a better egress performance for small size frames.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>

tx irq is optional in the driver. So remove the same from dts
to get a better egress performance for small size frames.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>