Signed-off-by: NSathya Perla <sathya.perla@emulex.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch sets up xps queue mapping on load, so that TX traffic is
steered to the queue whose irqs are being processed by the current cpu.
This helps in avoiding TX lock contention.
Signed-off-by: NSathya Perla <sathya.perla@emulex.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch provides hints to irqbalance to map be2net IRQs to
specific CPU cores. cpumask_set_cpu_local_first() is used, which first
maps IRQs to near NUMA cores; when those cores are exhausted, IRQs are
mapped to far NUMA cores.
Signed-off-by: NPadmanabh Ratnakar <padmanabh.ratnakar@emulex.com>
Signed-off-by: NSathya Perla <sathya.perla@emulex.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/chelsio/cxgb4/cxgb4_fcoe.c:49:9-10: WARNING: return of 0/1 in function 'cxgb_fcoe_sof_eof_supported' with return type bool

 Return statements in functions returning bool should use
 true/false instead of 1/0.
Generated by: scripts/coccinelle/misc/boolreturn.cocci

CC: Varun Prakash <varun@chelsio.com>
Signed-off-by: NFengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add support for multiple Rx queues:
1. Add NAPI context per Rx queue
2. Modify Rx interrupt and Rx NAPI code to handle multiple Rx queues
Signed-off-by: NPetri Gynther <pgynther@google.com>
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Introduce new bcmgenet functions to handle the NAPI calls to:
netif_napi_add()
napi_enable()
napi_disable()
netif_napi_del()
Signed-off-by: NPetri Gynther <pgynther@google.com>
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Introduce new bcmgenet functions to handle the NAPI calls to:
netif_napi_add()
napi_enable()
napi_disable()
netif_napi_del()
Signed-off-by: NPetri Gynther <pgynther@google.com>
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Use more meaningful variable names int0_enable and int1_enable when
enabling bcmgenet interrupts.

For Rx default queue interrupts, use:
UMAC_IRQ_RXDMA_BDONE | UMAC_IRQ_RXDMA_PDONE

For Tx default queue interrupts, use:
UMAC_IRQ_TXDMA_BDONE | UMAC_IRQ_TXDMA_PDONE
Signed-off-by: NPetri Gynther <pgynther@google.com>
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Do the two kcalloc() calls first, before proceeding into Rx/Tx DMA init.
Makes the error case handling much simpler.
Signed-off-by: NPetri Gynther <pgynther@google.com>
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Reviewed-by: NJaedon Shin <jaedon.shin@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Remove unnecessary function parameter priv. Use ring->priv instead.
Signed-off-by: NPetri Gynther <pgynther@google.com>
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Remove unused priv->int0_mask and priv->int1_mask.
Signed-off-by: NPetri Gynther <pgynther@google.com>
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

- Added wrapper functions around napi_add, napi_del, napi_enable and napi_disable
- Moved platform_get_irq function call after reading phy_mode
- Associating the new irq to tx completion for the supported ethernet interfaces
Signed-off-by: NIyappan Subramanian <isubramanian@apm.com>
Signed-off-by: NKeyur Chudgar <kchudgar@apm.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NVarun Prakash <varun@chelsio.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch adds cxgb4_fcoe.c and enables FCOE_CRC, FCOE_MTU
net device features.
Signed-off-by: NVarun Prakash <varun@chelsio.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch adds new header file cxgb4_fcoe.h and defines new
macros for FCoE support in cxgb4 driver.
Signed-off-by: NVarun Prakash <varun@chelsio.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In case the interface is not used, power down the integrated GPHY during
suspend. Similarly to bcmgenet_open(), bcmgenet_resume() powers on the GPHY
prior to any UniMAC activity.
Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Power up the GPHY while we are bringing-up the network interface, and
conversely, upon bring down, power the GPHY down. In order to avoid
creating hardware hazards, make sure that the GPHY gets powered on
during bcmgenet_open() prior to the UniMAC being reset as the UniMAC may
start creating activity towards the GPHY if we reverse the steps.
Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Implement the GPHY power down sequence by setting all power down bits, putting
the GPHY in reset, and finally cutting the 25Mhz reference clock.
Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

We were missing a number of extra steps and delays to power-up the GPHY, update
the sequence to reflect the proper procedure here.
Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In preparation for implementing the power down GPHY sequence, rename
bcmgenet_ephy_power_up to illustrate that it is not EPHY specific but
PHY agnostic, and add an "enable" argument.
Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The CK25_DIS bit controls whether a 25Mhz clock is fed to the GPHY or
not, in preparation for powering down the integrated GPHY when relevant,
make sure we clear that bit.
Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

If bcmgenet_power_down() fails, we would want to propagate a return
value from bcmgenet_wol_power_down_cfg() to know about this.
Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Always use software checksumming, since the hardware does not have any
checksum offload support.
This significantly improves local TCP tx performance.
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This improves performance for routing and local rx
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The start-of-frame and end-of-frame bits were accidentally swapped.
In the current code it does not make any difference, since they are
always used together.
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

NetCP 1.5 available on newer K2 SoCs such as K2E and K2L introduced 3
variants of the ethss subsystem, 9 port, 5 port and 2 port. These have
one host port towards the CPU and N external slave ports.

To customize the driver for these new ethss sub systems, multiple
compatibility strings are introduced. Currently some of parameters that
are different on different variants such as number of ALE ports, stats
modules and number of ports are defined through constants. These are now
changed to variables in gbe_priv data that get set based on the
compatibility string. This is required as there are no hardware
identification registers available to distinguish among the variants
of NetCP 1.5 ethss. However there is identification register available
to differentiate between NetCP 1.4 vs NetCP 1.5 and the same is made use
of in the code to differentiate them.

For more reading on the details of this peripheral, please refer to the
User Guide available at http://www.ti.com/lit/pdf/spruhz3Signed-off-by: NMurali Karicheri <m-karicheri2@ti.com>
Signed-off-by: NWingMan Kwok <w-kwok2@ti.com>
CC: "David S. Miller" <davem@davemloft.net>
CC: Mugunthan V N <mugunthanvnm@ti.com>
CC: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
CC: Grygorii Strashko <grygorii.strashko@ti.com>
CC: Christoph Jaeger <cj@linux.com>
CC: Lokesh Vutla <lokeshvutla@ti.com>
CC: Markus Pargmann <mpa@pengutronix.de>
CC: Kumar Gala <galak@codeaurora.org>
CC: Ian Campbell <ijc+devicetree@hellion.org.uk>
CC: Mark Rutland <mark.rutland@arm.com>
CC: Pawel Moll <pawel.moll@arm.com>
CC: Rob Herring <robh+dt@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Fix following checkpatch error. It seems to have passed checkpatch
last time when original code was introduced.

 ERROR: Macros with complex values should be enclosed in parentheses
 #172: FILE: drivers/net/ethernet/ti/netcp_ethss.c:869:
Signed-off-by: NMurali Karicheri <m-karicheri2@ti.com>
Signed-off-by: NWingMan Kwok <w-kwok2@ti.com>
CC: "David S. Miller" <davem@davemloft.net>
CC: Mugunthan V N <mugunthanvnm@ti.com>
CC: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
CC: Grygorii Strashko <grygorii.strashko@ti.com>
CC: Christoph Jaeger <cj@linux.com>
CC: Lokesh Vutla <lokeshvutla@ti.com>
CC: Markus Pargmann <mpa@pengutronix.de>
CC: Kumar Gala <galak@codeaurora.org>
CC: Ian Campbell <ijc+devicetree@hellion.org.uk>
CC: Mark Rutland <mark.rutland@arm.com>
CC: Pawel Moll <pawel.moll@arm.com>
CC: Rob Herring <robh+dt@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Keystone netcp driver re-uses davinci mdio driver. So enable it
by default for keystone netcp driver.
Signed-off-by: NMurali Karicheri <m-karicheri2@ti.com>
Signed-off-by: NWingMan Kwok <w-kwok2@ti.com>
CC: "David S. Miller" <davem@davemloft.net>
CC: Mugunthan V N <mugunthanvnm@ti.com>
CC: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
CC: Grygorii Strashko <grygorii.strashko@ti.com>
CC: Christoph Jaeger <cj@linux.com>
CC: Lokesh Vutla <lokeshvutla@ti.com>
CC: Markus Pargmann <mpa@pengutronix.de>
CC: Kumar Gala <galak@codeaurora.org>
CC: Ian Campbell <ijc+devicetree@hellion.org.uk>
CC: Mark Rutland <mark.rutland@arm.com>
CC: Pawel Moll <pawel.moll@arm.com>
CC: Rob Herring <robh+dt@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Ethss has multiple modules within the sub system
 - switch sub system
 - sgmii
 - mdio
 - switch module

NetCP driver re-uses existing davinci mdio driver. It requires to
have its own register region to map the reg space. So restructure
the code to use separate reg region for the individual modules it
manages. Use range property to define register space of NetCP and
use reg property to define individual reg spaces. So MDIO will have
its own reg space to map. This is a pre-requisite to enable MDIO
driver for NetCP.
Signed-off-by: NMurali Karicheri <m-karicheri2@ti.com>
Signed-off-by: NWingMan Kwok <w-kwok2@ti.com>
CC: "David S. Miller" <davem@davemloft.net>
CC: Mugunthan V N <mugunthanvnm@ti.com>
CC: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
CC: Grygorii Strashko <grygorii.strashko@ti.com>
CC: Christoph Jaeger <cj@linux.com>
CC: Lokesh Vutla <lokeshvutla@ti.com>
CC: Markus Pargmann <mpa@pengutronix.de>
CC: Kumar Gala <galak@codeaurora.org>
CC: Ian Campbell <ijc+devicetree@hellion.org.uk>
CC: Mark Rutland <mark.rutland@arm.com>
CC: Pawel Moll <pawel.moll@arm.com>
CC: Rob Herring <robh+dt@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

10G switch requires forward port number in the taginfo field,
where as it should be in packet_info field for necp 1.4 Ethss. So
fill this value correctly in the knav dma descriptor.

Also rename dma_psflags field in struct netcp_tx_pipe to switch_to_port
as it contain no flag, but the switch port number for forwarding the
packet. Add a flag to hold the new flag,  SWITCH_TO_PORT_IN_TAGINFO which
will be set for 10G. This can also used in the future for other flags for
the tx_pipe.
Signed-off-by: NMurali Karicheri <m-karicheri2@ti.com>
Signed-off-by: NWingMan Kwok <w-kwok2@ti.com>
CC: "David S. Miller" <davem@davemloft.net>
CC: Mugunthan V N <mugunthanvnm@ti.com>
CC: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
CC: Grygorii Strashko <grygorii.strashko@ti.com>
CC: Christoph Jaeger <cj@linux.com>
CC: Lokesh Vutla <lokeshvutla@ti.com>
CC: Markus Pargmann <mpa@pengutronix.de>
CC: Kumar Gala <galak@codeaurora.org>
CC: Ian Campbell <ijc+devicetree@hellion.org.uk>
CC: Mark Rutland <mark.rutland@arm.com>
CC: Pawel Moll <pawel.moll@arm.com>
CC: Rob Herring <robh+dt@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Home routers based on ARM SoCs like BCM4708 also have bcma bus with core
supported by bgmac.
Signed-off-by: NRafał Miłecki <zajec5@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

On ARM SoCs with bgmac Ethernet hardware we don't have any normal PHY.
There is always a switch attached but it's not even controlled over MDIO
like in case of MIPS devices.
We need a fixed PHY to be able to send/receive packets from the switch.
Signed-off-by: NRafał Miłecki <zajec5@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Use netif_carrier_off() first, since that will prevent the stack from
queuing more packets to this IF. This operation is fast, and should
behave much nicer when trying to bring down an interface under load.
Reported-by: NEliezer Tamir <eliezer.tamir@linux.intel.com>
Signed-off-by: NTodd Fujinaka <todd.fujinaka@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Use netif_carrier_off() first, since that will prevent the stack from
queuing more packets to this IF. This operation is fast, and should
behave much nicer when trying to bring down an interface under load.
Reported-by: NEliezer Tamir <eliezer.tamir@linux.intel.com>
Signed-off-by: NTodd Fujinaka <todd.fujinaka@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

The call to e1000e_write_protect_nvm_ich8lan() is no longer supported by HW.
Access to these registers causes a system freeze in A step hardware and is
ignored in B step hardware. This function must not be called in hardware
newer than LPT.
Signed-off-by: NYanir Lubetkin <yanirx.lubetkin@intel.com>
Tested-by: NAaron Brown <aaron.f.brown@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

When bringing down an interface netif_carrier_off() should be
one the first things we do, since this will prevent the stack
from queuing more packets to this interface.
This operation is very fast, and should make the device behave
much nicer when trying to bring down an interface under load.

Also, this would Do The Right Thing (TM) if this device has some
sort of fail-over teaming and redirect traffic to the other IF.

Move netif_carrier_off as early as possible.
Signed-off-by: NEliezer Tamir <eliezer.tamir@linux.intel.com>
Tested-by: NAaron Brown <aaron.f.brown@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

When bringing down an interface netif_carrier_off() should be
one the first things we do, since this will prevent the stack
from queuing more packets to this interface.
This operation is very fast, and should make the device behave
much nicer when trying to bring down an interface under load.

Also, this would Do The Right Thing (TM) if this device has some
sort of fail-over teaming and redirect traffic to the other IF.

Move netif_carrier_off as early as possible.
Signed-off-by: NEliezer Tamir <eliezer.tamir@linux.intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Use the napi_alloc_skb function to allocate an skb when running within
the softirq context to avoid calls to local_irq_save/restore.
Signed-off-by: NTom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The Rx coalescing value is internally converted from usecs to a value
that the hardware can use. When reporting the Rx coalescing value, this
internal value is converted back to usecs. During the conversion from
and back to usecs some rounding occurs. So, for example, when setting an
Rx usec of 30, it will be reported as 29. Fix this reporting issue by
keeping the original usec value and using that during reporting.
Signed-off-by: NTom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The Tx coalescing support in the driver was a software implementation
for something lacking in the hardware. Using hrtimers, the idea was to
trigger a timer interrupt after having queued a packet for transmit.
Unfortunately, as the timer value was lowered, the timer expired before
the hardware actually did the transmit and so it was racey and resulted
in unnecessary interrupts.

Remove the Tx coalescing support and hrtimer and replace with a Tx timer
that is used as a reclaim timer in case of inactivity.
Signed-off-by: NTom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>