Murali, Wingman,
On Thu, 2015-01-15 at 19:12 -0500, Murali Karicheri wrote:
> The network coprocessor (NetCP) is a hardware accelerator available in
> Keystone SoCs that processes Ethernet packets. NetCP consists of following
> hardware components
>
> 1 Gigabit Ethernet (GbE) subsystem with a Ethernet switch sub-module to
> send and receive packets.
> 2 Packet Accelerator (PA) module to perform packet classification
> operations such as header matching, and packet modification operations
> such as checksum generation.
> 3 Security Accelerator(SA) capable of performing IPSec operations on
> ingress/egress packets.
> 4 An optional 10 Gigabit Ethernet Subsystem (XGbE) which includes a
> 3-port Ethernet switch sub-module capable of 10Gb/s and 1Gb/s rates
> per Ethernet port.
> 5 Packet DMA and Queue Management Subsystem (QMSS) to enqueue and dequeue
> packets and DMA the packets between memory and NetCP hardware components
> described above.
>
> NetCP core driver make use of the Keystone Navigator driver API to allocate
> DMA channel for the Ethenet device and to handle packet queue/de-queue,
> Please refer API's in include/linux/soc/ti/knav_dma.h and
> drivers/soc/ti/knav_qmss.h for details.
>
> NetCP driver consists of NetCP core driver and at a minimum Gigabit
> Ethernet (GBE) module (1) driver to implement the Network device function.
> Other modules (2,3) can be optionally added to achieve supported hardware
> acceleration function. The initial version of the driver include NetCP
> core driver and GBE driver modules.
>
> Please refer Documentation/devicetree/bindings/net/keystone-netcp.txt
> for design of the driver.
>
> Cc: David Miller <davem@xxxxxxxxxxxxx>
> Cc: Rob Herring <robh+dt@xxxxxxxxxx>
> Cc: Grant Likely <grant.likely@xxxxxxxxxx>
> Cc: Santosh Shilimkar <santosh.shilimkar@xxxxxxxxxx>
> Cc: Pawel Moll <pawel.moll@xxxxxxx>
> Cc: Mark Rutland <mark.rutland@xxxxxxx>
> Cc: Ian Campbell <ijc+devicetree@xxxxxxxxxxxxxx>
> Cc: Kumar Gala <galak@xxxxxxxxxxxxxx>
>
> Signed-off-by: Murali Karicheri <m-karicheri2@xxxxxx>
> Signed-off-by: Wingman Kwok <w-kwok2@xxxxxx>
This patch is included as commit 84640e27f230 ("net: netcp: Add Keystone
NetCP core ethernet driver") in today's linux-next. I noticed because a
script I run on linux-next spotted a problem in it.
> ---
> MAINTAINERS | 7 +
> drivers/net/ethernet/ti/Kconfig | 11 +
> drivers/net/ethernet/ti/Makefile | 3 +
> drivers/net/ethernet/ti/netcp.h | 229 ++++
> drivers/net/ethernet/ti/netcp_core.c | 2141 ++++++++++++++++++++++++++++++++++
> 5 files changed, 2391 insertions(+)
> create mode 100644 drivers/net/ethernet/ti/netcp.h
> create mode 100644 drivers/net/ethernet/ti/netcp_core.c
>
>[...]
> diff --git a/drivers/net/ethernet/ti/Kconfig b/drivers/net/ethernet/ti/Kconfig
> index 605dd90..e11bcfa 100644
> --- a/drivers/net/ethernet/ti/Kconfig
> +++ b/drivers/net/ethernet/ti/Kconfig
> @@ -73,12 +73,23 @@ config TI_CPSW
> config TI_CPTS
> boolean "TI Common Platform Time Sync (CPTS) Support"
> depends on TI_CPSW
> + depends on TI_CPSW || TI_KEYSTONE_NET
You probably meant to add
|| TI_KEYSTONE_NETCP
here. Ie, add CP. But as this slipped through testing it _might_ not be
needed at all.
> select PTP_1588_CLOCK
> ---help---
> This driver supports the Common Platform Time Sync unit of
> the CPSW Ethernet Switch. The unit can time stamp PTP UDP/IPv4
> and Layer 2 packets, and the driver offers a PTP Hardware Clock.
>
> +config TI_KEYSTONE_NETCP
> + tristate "TI Keystone NETCP Ethernet subsystem Support"
> + depends on OF
> + depends on KEYSTONE_NAVIGATOR_DMA && KEYSTONE_NAVIGATOR_QMSS
> + ---help---
> + This driver supports TI's Keystone NETCP Ethernet subsystem.
> +
> + To compile this driver as a module, choose M here: the module
> + will be called keystone_netcp.
> +
> config TLAN
> tristate "TI ThunderLAN support"
> depends on (PCI || EISA)
Thanks,
Paul Bolle
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