net: dwc-xlgmac: Initial driver for DesignWare Enterprise Ethernet

Synopsys provides a new DesignWare Core Enterprise Ethernet MAC
IP (DWC-XLGMAC) for Ethernet designs. It is compliant with the
IEEE 802.3-2012 specifications, including IEEE 802.3ba and
consortium specifications.

This patch provides the initial 25G/40G/50G/100G Ethernet driver
for Synopsys XLGMAC IP Prototyping Kit.

Signed-off-by: Jie Deng <jiedeng@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

MAINTAINERS

@@ -11068,6 +11068,12 @@ F:	include/linux/dma/dw.h
 F:	include/linux/platform_data/dma-dw.h
 F:	drivers/dma/dw/
 
+SYNOPSYS DESIGNWARE ENTERPRISE ETHERNET DRIVER
+M:	Jie Deng <jiedeng@synopsys.com>
+L:	netdev@vger.kernel.org
+S:	Supported
+F:	drivers/net/ethernet/synopsys/
+
 SYNOPSYS DESIGNWARE I2C DRIVER
 M:	Jarkko Nikula <jarkko.nikula@linux.intel.com>
 R:	Andy Shevchenko <andriy.shevchenko@linux.intel.com>

drivers/net/ethernet/Kconfig

@@ -180,5 +180,6 @@ source "drivers/net/ethernet/via/Kconfig"
 source "drivers/net/ethernet/wiznet/Kconfig"
 source "drivers/net/ethernet/xilinx/Kconfig"
 source "drivers/net/ethernet/xircom/Kconfig"
+source "drivers/net/ethernet/synopsys/Kconfig"
 
 endif # ETHERNET

drivers/net/ethernet/Makefile

@@ -91,3 +91,4 @@ obj-$(CONFIG_NET_VENDOR_VIA) += via/
 obj-$(CONFIG_NET_VENDOR_WIZNET) += wiznet/
 obj-$(CONFIG_NET_VENDOR_XILINX) += xilinx/
 obj-$(CONFIG_NET_VENDOR_XIRCOM) += xircom/
+obj-$(CONFIG_NET_VENDOR_SYNOPSYS) += synopsys/

drivers/net/ethernet/synopsys/Kconfig

@@ -0,0 +1,41 @@
+#
+# Synopsys network device configuration
+#
+
+config NET_VENDOR_SYNOPSYS
+	bool "Synopsys devices"
+	default y
+	---help---
+	  If you have a network (Ethernet) device 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 Synopsys devices. If you say Y, you will be asked
+	  for your specific device in the following questions.
+
+if NET_VENDOR_SYNOPSYS
+
+config DWC_XLGMAC
+	tristate "Synopsys DWC Enterprise Ethernet (XLGMAC) driver support"
+	depends on HAS_IOMEM && HAS_DMA
+	select BITREVERSE
+	select CRC32
+	---help---
+	  This driver supports the Synopsys DesignWare Cores Enterprise
+	  Ethernet (dwc-xlgmac).
+
+if DWC_XLGMAC
+
+config DWC_XLGMAC_PCI
+	tristate "XLGMAC PCI bus support"
+	depends on DWC_XLGMAC && PCI
+	---help---
+	  This selects the pci bus support for the dwc-xlgmac driver.
+	  This driver was tested on Synopsys XLGMAC IP Prototyping Kit.
+
+	  If you have a controller with this interface, say Y or M here.
+	  If unsure, say N.
+
+endif # DWC_XLGMAC
+
+endif # NET_VENDOR_SYNOPSYS

drivers/net/ethernet/synopsys/Makefile

@@ -0,0 +1,9 @@
+#
+# Makefile for the Synopsys network device drivers.
+#
+
+obj-$(CONFIG_DWC_XLGMAC) += dwc-xlgmac.o
+dwc-xlgmac-objs := dwc-xlgmac-net.o dwc-xlgmac-desc.o \
+		   dwc-xlgmac-hw.o dwc-xlgmac-common.o
+
+dwc-xlgmac-$(CONFIG_DWC_XLGMAC_PCI) += dwc-xlgmac-pci.o