Add support of Cavium Liquidio ethernet adapters

Following patch V8 adds support for Cavium Liquidio pci express
based 10Gig ethernet adapters.
1) Consolidated all debug macros to either call dev_* or
   netdev_* macros directly, feedback from previous patch.
2) Changed soft commands to avoid crash when running
   in interrupt context.
3) Fixed link status not reflecting correct status when NetworkManager
   is running. Added MODULE_FIRMWARE declarations.

Following were the previous patches.
Patch V7:
1) Minor comments from v6 release regarding debug statements.
2) Fix for large multicast lists.
3) Fixed lockup issue if port initialization fails.
4) Enabled MSI by default.
https://patchwork.ozlabs.org/patch/464441/

Patch V6:
1) Addressed the uint64 vs u64 issue, feedback from previous patch.
2) Consolidated some receive processing routines.
3) Removed link status polling method.
https://patchwork.ozlabs.org/patch/459514/

Patch V5:
Based on the feedback from earlier patches with regards to
consolidation of common functions like device init, register
programming for cn66xx and cn68xx devices.
https://patchwork.ozlabs.org/patch/438979/

Patch V4:
Following were the changes based on the feedback from earlier patch:
1) Added mmiowb while synchronizing queue updates and other hw
   interactions.
2) Statistics will now be incremented non-atomically per each ring.
   liquidio_get_stats will add stats of each ring while reporting the
   total statistics counts.
3) Modified liquidio_ioctl  to return proper return codes.
4) Modified device naming to use standard Ethernet naming.
5) Global function names in the driver will have lio_/liquidio_/octeon_
   prefix.
6) Ethtool related changes for:
   Removed redundant stats and jiffies.
   Use default ethtool handler of link status.
   Speed setting will make use of ethtool_cmd_speed_set.
7) Added checks for pci_map_*  return codes.
8) Check for signals while waiting in interruptible mode
https://patchwork.ozlabs.org/patch/435073/

Patch v3:
Implemented feedback from previous patch like:
Removed NAPI Config and DEBUG config options, added BQL and xmit_more
support.
https://patchwork.ozlabs.org/patch/422749/

Patch V2:
Implemented feedback from previous patch.
https://patchwork.ozlabs.org/patch/413539/

First Patch:
https://patchwork.ozlabs.org/patch/412946/

Signed-off-by: Derek Chickles <[email protected]>
Signed-off-by: Satanand Burla <[email protected]>
Signed-off-by: Felix Manlunas <[email protected]>
Signed-off-by: Robert Richter <[email protected]>
Signed-off-by: Aleksey Makarov <[email protected]>
Signed-off-by: Raghu Vatsavayi <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

Author: Raghu Vatsavayi

MAINTAINERS

@@ -2442,6 +2442,17 @@ S:	Maintained
 F:	drivers/iio/light/cm*
 F:	Documentation/devicetree/bindings/i2c/trivial-devices.txt
 
+CAVIUM LIQUIDIO NETWORK DRIVER
+M:     Derek Chickles <[email protected]>
+M:     Satanand Burla <[email protected]>
+M:     Felix Manlunas <[email protected]>
+M:     Raghu Vatsavayi <[email protected]>
+L:     [email protected]
+W:     http://www.cavium.com
+S:     Supported
+F:     drivers/net/ethernet/cavium/
+F:     drivers/net/ethernet/cavium/liquidio/
+
 CC2520 IEEE-802.15.4 RADIO DRIVER
 M:	Varka Bhadram <[email protected]>
 L:	[email protected]

drivers/net/ethernet/cavium/Kconfig

@@ -4,37 +4,53 @@
 
 config NET_VENDOR_CAVIUM
 	tristate "Cavium ethernet drivers"
-	depends on PCI && 64BIT
+	depends on PCI
+	default y
 	---help---
-	  Enable support for the Cavium ThunderX Network Interface
-	  Controller (NIC). The NIC provides the controller and DMA
-	  engines to move network traffic to/from the memory. The NIC
-	  works closely with TNS, BGX and SerDes to implement the
-	  functions replacing and virtualizing those of a typical
-	  standalone PCIe NIC chip.
+	  Select this option if you want enable Cavium network support.
 
-	  If you have a Cavium Thunder board, say Y.
+	  If you have a Cavium SoC or network adapter, say Y.
 
 if NET_VENDOR_CAVIUM
 
 config THUNDER_NIC_PF
 	tristate "Thunder Physical function driver"
-	default NET_VENDOR_CAVIUM
+	depends on 64BIT
+	default ARCH_THUNDER
 	select THUNDER_NIC_BGX
 	---help---
 	  This driver supports Thunder's NIC physical function.
+	  The NIC provides the controller and DMA engines to
+	  move network traffic to/from the memory. The NIC
+	  works closely with TNS, BGX and SerDes to implement the
+	  functions replacing and virtualizing those of a typical
+	  standalone PCIe NIC chip.
 
 config THUNDER_NIC_VF
 	tristate "Thunder Virtual function driver"
-	default NET_VENDOR_CAVIUM
+	depends on 64BIT
+	default ARCH_THUNDER
 	---help---
 	  This driver supports Thunder's NIC virtual function
 
 config	THUNDER_NIC_BGX
 	tristate "Thunder MAC interface driver (BGX)"
-	default NET_VENDOR_CAVIUM
+	depends on 64BIT
+	default ARCH_THUNDER
 	---help---
 	  This driver supports programming and controlling of MAC
 	  interface from NIC physical function driver.
 
+config LIQUIDIO
+	tristate "Cavium LiquidIO support"
+	select PTP_1588_CLOCK
+	select FW_LOADER
+	select LIBCRC32
+	---help---
+	  This driver supports Cavium LiquidIO Intelligent Server Adapters
+	  based on CN66XX and CN68XX chips.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called liquidio.  This is recommended.
+
 endif # NET_VENDOR_CAVIUM

drivers/net/ethernet/cavium/Makefile

@@ -1,5 +1,5 @@
 #
 # Makefile for the Cavium ethernet device drivers.
 #
-
 obj-$(CONFIG_NET_VENDOR_CAVIUM) += thunder/
+obj-$(CONFIG_NET_VENDOR_CAVIUM) += liquidio/

drivers/net/ethernet/cavium/liquidio/Makefile

@@ -0,0 +1,16 @@
+#
+# Cavium Liquidio ethernet device driver
+#
+obj-$(CONFIG_LIQUIDIO) += liquidio.o
+
+liquidio-objs := lio_main.o  \
+	      lio_ethtool.o      \
+	      request_manager.o  \
+	      response_manager.o \
+	      octeon_device.o    \
+	      cn66xx_device.o    \
+	      cn68xx_device.o    \
+	      octeon_mem_ops.o   \
+	      octeon_droq.o      \
+	      octeon_console.o   \
+	      octeon_nic.o