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Commit a556c76a authored by Alexandre Belloni's avatar Alexandre Belloni Committed by David S. Miller
Browse files

net: mscc: Add initial Ocelot switch support 



Add a driver for Microsemi Ocelot Ethernet switch support.

This makes two modules:
mscc_ocelot_common handles all the common features that doesn't depend on
how the switch is integrated in the SoC. Currently, it handles offloading
bridging to the hardware. ocelot_io.c handles register accesses. This is
unfortunately needed because the register layout is packed and then depends
on the number of ports available on the switch. The register definition
files are automatically generated.

ocelot_board handles the switch integration on the SoC and on the board.

Frame injection and extraction to/from the CPU port is currently done using
register accesses which is quite slow. DMA is possible but the port is not
able to absorb the whole switch bandwidth.

Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@bootlin.com>
Reviewed-by: default avatarAndrew Lunn <andrew@lunn.ch>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 44b801e0

drivers/net/ethernet/Kconfig

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@@ -114,6 +114,7 @@ source "drivers/net/ethernet/mediatek/Kconfig" 
source "drivers/net/ethernet/mellanox/Kconfig"

source "drivers/net/ethernet/micrel/Kconfig"

source "drivers/net/ethernet/microchip/Kconfig"

source "drivers/net/ethernet/mscc/Kconfig"

source "drivers/net/ethernet/moxa/Kconfig"

source "drivers/net/ethernet/myricom/Kconfig"

drivers/net/ethernet/Makefile

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@@ -55,6 +55,7 @@ obj-$(CONFIG_NET_VENDOR_MEDIATEK) += mediatek/ 
obj-$(CONFIG_NET_VENDOR_MELLANOX) += mellanox/

obj-$(CONFIG_NET_VENDOR_MICREL) += micrel/

obj-$(CONFIG_NET_VENDOR_MICROCHIP) += microchip/

obj-$(CONFIG_NET_VENDOR_MICROSEMI) += mscc/

obj-$(CONFIG_NET_VENDOR_MOXART) += moxa/

obj-$(CONFIG_NET_VENDOR_MYRI) += myricom/

obj-$(CONFIG_FEALNX) += fealnx.o

drivers/net/ethernet/mscc/Kconfig

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# SPDX-License-Identifier: (GPL-2.0 OR MIT)

config NET_VENDOR_MICROSEMI

	bool "Microsemi devices"

	default y

	help

	  If you have a network (Ethernet) card belonging to this class, say Y.



	  Note that the answer to this question doesn't directly affect the

	  kernel: saying N will just cause the configurator to skip all

	  the questions about Microsemi devices.



if NET_VENDOR_MICROSEMI



config MSCC_OCELOT_SWITCH

	tristate "Ocelot switch driver"

	depends on NET_SWITCHDEV

	depends on HAS_IOMEM

	select PHYLIB

	select REGMAP_MMIO

	help

	  This driver supports the Ocelot network switch device.



config MSCC_OCELOT_SWITCH_OCELOT

	tristate "Ocelot switch driver on Ocelot"

	depends on MSCC_OCELOT_SWITCH

	help

	  This driver supports the Ocelot network switch device as present on

	  the Ocelot SoCs.



endif # NET_VENDOR_MICROSEMI

drivers/net/ethernet/mscc/Makefile

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# SPDX-License-Identifier: (GPL-2.0 OR MIT)

obj-$(CONFIG_MSCC_OCELOT_SWITCH) += mscc_ocelot_common.o

mscc_ocelot_common-y := ocelot.o ocelot_io.o

mscc_ocelot_common-y += ocelot_regs.o

obj-$(CONFIG_MSCC_OCELOT_SWITCH_OCELOT) += ocelot_board.o

drivers/net/ethernet/mscc/ocelot.c

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File added.

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