net: xilinx: Move Xilinx TSN to staging

The newly added and existing TSN functionality is dependent on conditional
kernel config options. The AXI Ethernet and TSN functionality cannot both
be supported with the same defconfig in the current state. Hence move
TSN to staging area and split the two drivers as temporary solution until
an acceptable upstream solution is possible.

-> Move TSN specific files to staging area and make a copy of the common
files (header, mcdma and main files).
-> Remove all TSN specific code present under both dynamic and static
checks in the Axi Ethernet driver. Remove tsn compatible string.
-> The default config cannot include CONFIG_AXIENET_HAS_MCDMA because
it affects the baseline AXI Ethernet driver. Hence modify TSN
staging driver to default to MCDMA specific code as required.
-> Remove CONFIG_XILINX_AXI_EMAC_HWTSTAMP specific code in staging
as it is not used in TSN driver.
-> Remove unused non-static functions and related exported symbols in
tsn staging driver.
-> In staging, rename all non-static functions and macros with a _tsn
suffix when affected by either the above changes or by CONFIG_XILINX_TSN
being enabled in defconfig. This ensures that driver/net/ethernet/xilinx
and drivers/staging/xilinx-tsn drivers do not have any conflicts.
-> Added ethtool support
-> Fixed irq handling in mcdma_rx_probe_tsn

Signed-off-by: Pranavi Somisetty <pranavi.somisetty@xilinx.com>
Signed-off-by: Harini Katakam <harini.katakam@xilinx.com>
Reviewed-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>

drivers/net/ethernet/xilinx/Kconfig

@@ -44,15 +44,6 @@ config AXIENET_HAS_MCDMA
 	help
 	  When hardware is generated with AXI Ethernet with MCDMA select this option.
 
-config AXIENET_HAS_TADMA
-	bool "AxiEthernet is configured with TADMA"
-	depends on XILINX_TSN
-	help
-	  When hardware is generated with Axi Ethernet with TADMA select this option.
-	  This driver enables Time Aware DMA to support TSN Qbv clause accurately.
-	  It is used to fetch schedule traffic.
-	  It contains one queue.
-
 config XILINX_LL_TEMAC
 	tristate "Xilinx LL TEMAC (LocalLink Tri-mode Ethernet MAC) driver"
 	depends on HAS_IOMEM
@@ -61,55 +52,4 @@ config XILINX_LL_TEMAC
 	  This driver supports the Xilinx 10/100/1000 LocalLink TEMAC
 	  core used in Xilinx Spartan and Virtex FPGAs
 
-config XILINX_TSN
-	bool "Enable Xilinx's TSN IP"
-	select XILINX_AXI_EMAC
-	help
-	  Enable Xilinx's TSN IP.
-
-config XILINX_TSN_PTP
-	bool "Generate hardware packet timestamps using Xilinx's TSN IP"
-	depends on XILINX_TSN
-	select PTP_1588_CLOCK
-	default y
-	help
-	  Generate hardware packet timestamps. This is to facilitate IEEE 1588.
-
-config XILINX_TSN_QBV
-	bool "Support Qbv protocol in TSN"
-	depends on XILINX_TSN_PTP
-	select PTP_1588_CLOCK
-	default y
-	help
-	  Enables TSN Qbv protocol.
-
-config XILINX_TSN_SWITCH
-	bool "Support TSN switch"
-	depends on XILINX_TSN
-	select NET_SWITCHDEV
-	default y
-	help
-	  Enable Xilinx's TSN Switch support.
-
-config XILINX_TSN_QCI
-	bool "Support Qci protocol in TSN"
-	depends on XILINX_TSN_SWITCH
-	default y
-	help
-	  Enable TSN QCI protocol.
-
-config XILINX_TSN_CB
-	bool "Support CB protocol in TSN"
-	depends on XILINX_TSN_SWITCH
-	default y
-	help
-	  Enable TSN CB protocol support.
-
-config XILINX_TSN_QBR
-       bool "Support QBR protocol in TSN"
-       depends on XILINX_TSN_SWITCH
-       default y
-       help
-         Enable TSN QBR protocol support.
-
 endif # NET_VENDOR_XILINX

drivers/net/ethernet/xilinx/Makefile

@@ -6,14 +6,6 @@
 ll_temac-objs := ll_temac_main.o ll_temac_mdio.o
 obj-$(CONFIG_XILINX_LL_TEMAC) += ll_temac.o
 obj-$(CONFIG_XILINX_EMACLITE) += xilinx_emaclite.o
-obj-$(CONFIG_XILINX_TSN) += xilinx_tsn_ep.o xilinx_tsn_ep_ex.o xilinx_tsn_ip.o
-obj-$(CONFIG_XILINX_TSN_PTP) += xilinx_tsn_ptp_xmit.o xilinx_tsn_ptp_clock.o
-obj-$(CONFIG_XILINX_TSN_QBV) += xilinx_tsn_shaper.o
-obj-$(CONFIG_XILINX_TSN_QCI) += xilinx_tsn_qci.o
-obj-$(CONFIG_XILINX_TSN_CB) += xilinx_tsn_cb.o
-obj-$(CONFIG_XILINX_TSN_SWITCH) += xilinx_tsn_switch.o xilinx_tsn_switchdev.o
 xilinx_emac-objs := xilinx_axienet_main.o xilinx_axienet_mdio.o xilinx_axienet_dma.o
 obj-$(CONFIG_XILINX_AXI_EMAC) += xilinx_emac.o
-obj-$(CONFIG_XILINX_TSN_QBR) += xilinx_tsn_preemption.o
 obj-$(CONFIG_AXIENET_HAS_MCDMA) += xilinx_axienet_mcdma.o
-obj-$(CONFIG_AXIENET_HAS_TADMA) += xilinx_tsn_tadma.o