Merge tag 'staging-5.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging driver fixes from Greg KH:
 "Here are some small staging driver fixes for 5.1-rc3, and one driver
  removal.

  The biggest thing here is the removal of the mt7621-eth driver as a
  "real" network driver was merged in 5.1-rc1 for this hardware, so this
  old driver can now be removed.

  Other than that, there are just a number of small fixes, all resolving
  reported issues and some potential corner cases for error handling
  paths.

  All of these have been in linux-next with no reported issues"

* tag 'staging-5.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: vt6655: Remove vif check from vnt_interrupt
  staging: erofs: keep corrupted fs from crashing kernel in erofs_readdir()
  staging: octeon-ethernet: fix incorrect PHY mode
  staging: vc04_services: Fix an error code in vchiq_probe()
  staging: erofs: fix error handling when failed to read compresssed data
  staging: vt6655: Fix interrupt race condition on device start up.
  staging: rtlwifi: Fix potential NULL pointer dereference of kzalloc
  staging: rtl8712: uninitialized memory in read_bbreg_hdl()
  staging: rtlwifi: rtl8822b: fix to avoid potential NULL pointer dereference
  staging: rtl8188eu: Fix potential NULL pointer dereference of kcalloc
  staging, mt7621-pci: fix build without pci support
  staging: speakup_soft: Fix alternate speech with other synths
  staging: axis-fifo: add CONFIG_OF dependency
  staging: olpc_dcon_xo_1: add missing 'const' qualifier
  staging: comedi: ni_mio_common: Fix divide-by-zero for DIO cmdtest
  staging: erofs: fix to handle error path of erofs_vmap()
  staging: mt7621-dts: update ethernet settings.
  staging: remove mt7621-eth

drivers/staging/Kconfig

@@ -114,8 +114,6 @@ source "drivers/staging/ralink-gdma/Kconfig"
 
 source "drivers/staging/mt7621-mmc/Kconfig"
 
-source "drivers/staging/mt7621-eth/Kconfig"
-
 source "drivers/staging/mt7621-dts/Kconfig"
 
 source "drivers/staging/gasket/Kconfig"

drivers/staging/Makefile

@@ -47,7 +47,6 @@ obj-$(CONFIG_SPI_MT7621)	+= mt7621-spi/
 obj-$(CONFIG_SOC_MT7621)	+= mt7621-dma/
 obj-$(CONFIG_DMA_RALINK)	+= ralink-gdma/
 obj-$(CONFIG_MTK_MMC)		+= mt7621-mmc/
-obj-$(CONFIG_NET_MEDIATEK_SOC_STAGING)	+= mt7621-eth/
 obj-$(CONFIG_SOC_MT7621)	+= mt7621-dts/
 obj-$(CONFIG_STAGING_GASKET_FRAMEWORK)	+= gasket/
 obj-$(CONFIG_XIL_AXIS_FIFO)	+= axis-fifo/

drivers/staging/axis-fifo/Kconfig

@@ -3,6 +3,7 @@
 #
 config XIL_AXIS_FIFO
 	tristate "Xilinx AXI-Stream FIFO IP core driver"
+	depends on OF
 	default n
 	help
 	  This adds support for the Xilinx AXI-Stream

drivers/staging/comedi/comedidev.h

@@ -1001,6 +1001,8 @@ int comedi_dio_insn_config(struct comedi_device *dev,
 			   unsigned int mask);
 unsigned int comedi_dio_update_state(struct comedi_subdevice *s,
 				     unsigned int *data);
+unsigned int comedi_bytes_per_scan_cmd(struct comedi_subdevice *s,
+				       struct comedi_cmd *cmd);
 unsigned int comedi_bytes_per_scan(struct comedi_subdevice *s);
 unsigned int comedi_nscans_left(struct comedi_subdevice *s,
 				unsigned int nscans);

drivers/staging/comedi/drivers.c

@@ -394,11 +394,13 @@ unsigned int comedi_dio_update_state(struct comedi_subdevice *s,
 EXPORT_SYMBOL_GPL(comedi_dio_update_state);
 
 /**
- * comedi_bytes_per_scan() - Get length of asynchronous command "scan" in bytes
+ * comedi_bytes_per_scan_cmd() - Get length of asynchronous command "scan" in
+ * bytes
  * @s: COMEDI subdevice.
+ * @cmd: COMEDI command.
  *
  * Determines the overall scan length according to the subdevice type and the
- * number of channels in the scan.
+ * number of channels in the scan for the specified command.
  *
  * For digital input, output or input/output subdevices, samples for
  * multiple channels are assumed to be packed into one or more unsigned
@@ -408,9 +410,9 @@ EXPORT_SYMBOL_GPL(comedi_dio_update_state);
  *
  * Returns the overall scan length in bytes.
  */
-unsigned int comedi_bytes_per_scan(struct comedi_subdevice *s)
+unsigned int comedi_bytes_per_scan_cmd(struct comedi_subdevice *s,
+				       struct comedi_cmd *cmd)
 {
-	struct comedi_cmd *cmd = &s->async->cmd;
 	unsigned int num_samples;
 	unsigned int bits_per_sample;
 
@@ -427,6 +429,29 @@ unsigned int comedi_bytes_per_scan(struct comedi_subdevice *s)
 	}
 	return comedi_samples_to_bytes(s, num_samples);
 }
+EXPORT_SYMBOL_GPL(comedi_bytes_per_scan_cmd);
+
+/**
+ * comedi_bytes_per_scan() - Get length of asynchronous command "scan" in bytes
+ * @s: COMEDI subdevice.
+ *
+ * Determines the overall scan length according to the subdevice type and the
+ * number of channels in the scan for the current command.
+ *
+ * For digital input, output or input/output subdevices, samples for
+ * multiple channels are assumed to be packed into one or more unsigned
+ * short or unsigned int values according to the subdevice's %SDF_LSAMPL
+ * flag.  For other types of subdevice, samples are assumed to occupy a
+ * whole unsigned short or unsigned int according to the %SDF_LSAMPL flag.
+ *
+ * Returns the overall scan length in bytes.
+ */
+unsigned int comedi_bytes_per_scan(struct comedi_subdevice *s)
+{
+	struct comedi_cmd *cmd = &s->async->cmd;
+
+	return comedi_bytes_per_scan_cmd(s, cmd);
+}
 EXPORT_SYMBOL_GPL(comedi_bytes_per_scan);
 
 static unsigned int __comedi_nscans_left(struct comedi_subdevice *s,

drivers/staging/comedi/drivers/ni_mio_common.c

@@ -3545,6 +3545,7 @@ static int ni_cdio_cmdtest(struct comedi_device *dev,
 			   struct comedi_subdevice *s, struct comedi_cmd *cmd)
 {
 	struct ni_private *devpriv = dev->private;
+	unsigned int bytes_per_scan;
 	int err = 0;
 
 	/* Step 1 : check if triggers are trivially valid */
@@ -3579,9 +3580,12 @@ static int ni_cdio_cmdtest(struct comedi_device *dev,
 	err |= comedi_check_trigger_arg_is(&cmd->convert_arg, 0);
 	err |= comedi_check_trigger_arg_is(&cmd->scan_end_arg,
 					   cmd->chanlist_len);
-	err |= comedi_check_trigger_arg_max(&cmd->stop_arg,
-					    s->async->prealloc_bufsz /
-					    comedi_bytes_per_scan(s));
+	bytes_per_scan = comedi_bytes_per_scan_cmd(s, cmd);
+	if (bytes_per_scan) {
+		err |= comedi_check_trigger_arg_max(&cmd->stop_arg,
+						    s->async->prealloc_bufsz /
+						    bytes_per_scan);
+	}
 
 	if (err)
 		return 3;

drivers/staging/erofs/dir.c

@@ -23,6 +23,21 @@ static const unsigned char erofs_filetype_table[EROFS_FT_MAX] = {
 	[EROFS_FT_SYMLINK]	= DT_LNK,
 };
 
+static void debug_one_dentry(unsigned char d_type, const char *de_name,
+			     unsigned int de_namelen)
+{
+#ifdef CONFIG_EROFS_FS_DEBUG
+	/* since the on-disk name could not have the trailing '\0' */
+	unsigned char dbg_namebuf[EROFS_NAME_LEN + 1];
+
+	memcpy(dbg_namebuf, de_name, de_namelen);
+	dbg_namebuf[de_namelen] = '\0';
+
+	debugln("found dirent %s de_len %u d_type %d", dbg_namebuf,
+		de_namelen, d_type);
+#endif
+}
+
 static int erofs_fill_dentries(struct dir_context *ctx,
 			       void *dentry_blk, unsigned int *ofs,
 			       unsigned int nameoff, unsigned int maxsize)
@@ -33,14 +48,10 @@ static int erofs_fill_dentries(struct dir_context *ctx,
 	de = dentry_blk + *ofs;
 	while (de < end) {
 		const char *de_name;
-		int de_namelen;
+		unsigned int de_namelen;
 		unsigned char d_type;
-#ifdef CONFIG_EROFS_FS_DEBUG
-		unsigned int dbg_namelen;
-		unsigned char dbg_namebuf[EROFS_NAME_LEN];
-#endif
 
-		if (unlikely(de->file_type < EROFS_FT_MAX))
+		if (de->file_type < EROFS_FT_MAX)
 			d_type = erofs_filetype_table[de->file_type];
 		else
 			d_type = DT_UNKNOWN;
@@ -48,26 +59,20 @@ static int erofs_fill_dentries(struct dir_context *ctx,
 		nameoff = le16_to_cpu(de->nameoff);
 		de_name = (char *)dentry_blk + nameoff;
 
-		de_namelen = unlikely(de + 1 >= end) ?
-			/* last directory entry */
-			strnlen(de_name, maxsize - nameoff) :
-			le16_to_cpu(de[1].nameoff) - nameoff;
+		/* the last dirent in the block? */
+		if (de + 1 >= end)
+			de_namelen = strnlen(de_name, maxsize - nameoff);
+		else
+			de_namelen = le16_to_cpu(de[1].nameoff) - nameoff;
 
 		/* a corrupted entry is found */
-		if (unlikely(de_namelen < 0)) {
+		if (unlikely(nameoff + de_namelen > maxsize ||
+			     de_namelen > EROFS_NAME_LEN)) {
 			DBG_BUGON(1);
 			return -EIO;
 		}
 
-#ifdef CONFIG_EROFS_FS_DEBUG
-		dbg_namelen = min(EROFS_NAME_LEN - 1, de_namelen);
-		memcpy(dbg_namebuf, de_name, dbg_namelen);
-		dbg_namebuf[dbg_namelen] = '\0';
-
-		debugln("%s, found de_name %s de_len %d d_type %d", __func__,
-			dbg_namebuf, de_namelen, d_type);
-#endif
-
+		debug_one_dentry(d_type, de_name, de_namelen);
 		if (!dir_emit(ctx, de_name, de_namelen,
 			      le64_to_cpu(de->nid), d_type))
 			/* stopped by some reason */

drivers/staging/erofs/unzip_vle.c

@@ -972,6 +972,7 @@ static int z_erofs_vle_unzip(struct super_block *sb,
 	overlapped = false;
 	compressed_pages = grp->compressed_pages;
 
+	err = 0;
 	for (i = 0; i < clusterpages; ++i) {
 		unsigned int pagenr;
 
@@ -981,26 +982,39 @@ static int z_erofs_vle_unzip(struct super_block *sb,
 		DBG_BUGON(!page);
 		DBG_BUGON(!page->mapping);
 
-		if (z_erofs_is_stagingpage(page))
-			continue;
+		if (!z_erofs_is_stagingpage(page)) {
 #ifdef EROFS_FS_HAS_MANAGED_CACHE
-		if (page->mapping == MNGD_MAPPING(sbi)) {
-			DBG_BUGON(!PageUptodate(page));
-			continue;
-		}
+			if (page->mapping == MNGD_MAPPING(sbi)) {
+				if (unlikely(!PageUptodate(page)))
+					err = -EIO;
+				continue;
+			}
 #endif
 
-		/* only non-head page could be reused as a compressed page */
-		pagenr = z_erofs_onlinepage_index(page);
+			/*
+			 * only if non-head page can be selected
+			 * for inplace decompression
+			 */
+			pagenr = z_erofs_onlinepage_index(page);
 
-		DBG_BUGON(pagenr >= nr_pages);
-		DBG_BUGON(pages[pagenr]);
-		++sparsemem_pages;
-		pages[pagenr] = page;
+			DBG_BUGON(pagenr >= nr_pages);
+			DBG_BUGON(pages[pagenr]);
+			++sparsemem_pages;
+			pages[pagenr] = page;
 
-		overlapped = true;
+			overlapped = true;
+		}
+
+		/* PG_error needs checking for inplaced and staging pages */
+		if (unlikely(PageError(page))) {
+			DBG_BUGON(PageUptodate(page));
+			err = -EIO;
+		}
 	}
 
+	if (unlikely(err))
+		goto out;
+
 	llen = (nr_pages << PAGE_SHIFT) - work->pageofs;
 
 	if (z_erofs_vle_workgrp_fmt(grp) == Z_EROFS_VLE_WORKGRP_FMT_PLAIN) {
@@ -1029,6 +1043,10 @@ static int z_erofs_vle_unzip(struct super_block *sb,
 
 skip_allocpage:
 	vout = erofs_vmap(pages, nr_pages);
+	if (!vout) {
+		err = -ENOMEM;
+		goto out;
+	}
 
 	err = z_erofs_vle_unzip_vmap(compressed_pages,
 		clusterpages, vout, llen, work->pageofs, overlapped);
@@ -1194,6 +1212,7 @@ pickup_page_for_submission(struct z_erofs_vle_workgroup *grp,
 	if (page->mapping == mc) {
 		WRITE_ONCE(grp->compressed_pages[nr], page);
 
+		ClearPageError(page);
 		if (!PagePrivate(page)) {
 			/*
 			 * impossible to be !PagePrivate(page) for

drivers/staging/erofs/unzip_vle_lz4.c

@@ -136,10 +136,13 @@ int z_erofs_vle_unzip_fast_percpu(struct page **compressed_pages,
 
 	nr_pages = DIV_ROUND_UP(outlen + pageofs, PAGE_SIZE);
 
-	if (clusterpages == 1)
+	if (clusterpages == 1) {
 		vin = kmap_atomic(compressed_pages[0]);
-	else
+	} else {
 		vin = erofs_vmap(compressed_pages, clusterpages);
+		if (!vin)
+			return -ENOMEM;
+	}
 
 	preempt_disable();
 	vout = erofs_pcpubuf[smp_processor_id()].data;

drivers/staging/mt7621-dts/gbpc1.dts

@@ -117,22 +117,6 @@ &pcie {
 	status = "okay";
 };
 
-&ethernet {
-	//mtd-mac-address = <&factory 0xe000>;
-	gmac1: mac@0 {
-		compatible = "mediatek,eth-mac";
-		reg = <0>;
-		phy-handle = <&phy1>;
-	};
-
-	mdio-bus {
-		phy1: ethernet-phy@1 {
-			reg = <1>;
-			phy-mode = "rgmii";
-		};
-	};
-};
-
 &pinctrl {
 	state_default: pinctrl0 {
 		gpio {
@@ -141,3 +125,16 @@ gpio {
 		};
 	};
 };
+
+&switch0 {
+	ports {
+		port@0 {
+			label = "ethblack";
+			status = "ok";
+		};
+		port@4 {
+			label = "ethblue";
+			status = "ok";
+		};
+	};
+};

drivers/staging/mt7621-dts/mt7621.dtsi

@@ -372,16 +372,83 @@ ethernet: ethernet@1e100000 {
 
 		mediatek,ethsys = <&ethsys>;
 
-		mediatek,switch = <&gsw>;
 
+		gmac0: mac@0 {
+			compatible = "mediatek,eth-mac";
+			reg = <0>;
+			phy-mode = "rgmii";
+			fixed-link {
+				speed = <1000>;
+				full-duplex;
+				pause;
+			};
+		};
+		gmac1: mac@1 {
+			compatible = "mediatek,eth-mac";
+			reg = <1>;
+			status = "off";
+			phy-mode = "rgmii";
+			phy-handle = <&phy5>;
+		};
 		mdio-bus {
 			#address-cells = <1>;
 			#size-cells = <0>;
 
-			phy1f: ethernet-phy@1f {
-				reg = <0x1f>;
+			phy5: ethernet-phy@5 {
+				reg = <5>;
 				phy-mode = "rgmii";
 			};
+
+			switch0: switch0@0 {
+				compatible = "mediatek,mt7621";
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <0>;
+				mediatek,mcm;
+				resets = <&rstctrl 2>;
+				reset-names = "mcm";
+
+				ports {
+					#address-cells = <1>;
+					#size-cells = <0>;
+					reg = <0>;
+					port@0 {
+						status = "off";
+						reg = <0>;
+						label = "lan0";
+					};
+					port@1 {
+						status = "off";
+						reg = <1>;
+						label = "lan1";
+					};
+					port@2 {
+						status = "off";
+						reg = <2>;
+						label = "lan2";
+					};
+					port@3 {
+						status = "off";
+						reg = <3>;
+						label = "lan3";
+					};
+					port@4 {
+						status = "off";
+						reg = <4>;
+						label = "lan4";
+					};
+					port@6 {
+						reg = <6>;
+						label = "cpu";
+						ethernet = <&gmac0>;
+						phy-mode = "trgmii";
+						fixed-link {
+							speed = <1000>;
+							full-duplex;
+						};
+					};
+				};
+			};
 		};
 	};
 

drivers/staging/mt7621-eth/Documentation/devicetree/bindings/net/mediatek-net-gsw.txt

-Mediatek Gigabit Switch
-=======================
-
-The mediatek gigabit switch can be found on Mediatek SoCs.
-
-Required properties:
-- compatible: Should be "mediatek,mt7620-gsw", "mediatek,mt7621-gsw",
-  "mediatek,mt7623-gsw"
-- reg: Address and length of the register set for the device
-- interrupts: Should contain the gigabit switches interrupt
-
-
-Additional required properties for ARM based SoCs:
-- mediatek,reset-pin: phandle describing the reset GPIO
-- clocks: the clocks used by the switch
-- clock-names: the names of the clocks listed in the clocks property
-  these should be "trgpll", "esw", "gp2", "gp1"
-- mt7530-supply: the phandle of the regulator used to power the switch
-- mediatek,pctl-regmap: phandle to the port control regmap. this is used to
-  setup the drive current
-
-
-Optional properties:
-- interrupt-parent: Should be the phandle for the interrupt controller
-  that services interrupts for this device
-
-Example:
-
-gsw: switch@1b100000 {
-	compatible = "mediatek,mt7623-gsw";
-	reg = <0 0x1b110000 0 0x300000>;
-
-	interrupt-parent = <&pio>;
-	interrupts = <168 IRQ_TYPE_EDGE_RISING>;
-
-	clocks = <&apmixedsys CLK_APMIXED_TRGPLL>,
-		 <&ethsys CLK_ETHSYS_ESW>,
-		 <&ethsys CLK_ETHSYS_GP2>,
-		 <&ethsys CLK_ETHSYS_GP1>;
-	clock-names = "trgpll", "esw", "gp2", "gp1";
-
-	mt7530-supply = <&mt6323_vpa_reg>;
-
-	mediatek,pctl-regmap = <&syscfg_pctl_a>;
-	mediatek,reset-pin = <&pio 15 0>;
-
-	status = "okay";
-};

drivers/staging/mt7621-eth/Kconfig

-config NET_VENDOR_MEDIATEK_STAGING
-	bool "MediaTek ethernet driver - staging version"
-	depends on RALINK
-	---help---
-	  If you have an MT7621 Mediatek SoC with ethernet, say Y.
-
-if NET_VENDOR_MEDIATEK_STAGING
-choice
-	prompt "MAC type"
-
-config NET_MEDIATEK_MT7621
-	bool "MT7621"
-	depends on MIPS && SOC_MT7621
-
-endchoice
-
-config NET_MEDIATEK_SOC_STAGING
-	tristate "MediaTek SoC Gigabit Ethernet support"
-	depends on NET_VENDOR_MEDIATEK_STAGING
-	select PHYLIB
-	---help---
-	  This driver supports the gigabit ethernet MACs in the
-	  MediaTek SoC family.
-
-config NET_MEDIATEK_MDIO
-	def_bool NET_MEDIATEK_SOC_STAGING
-	depends on NET_MEDIATEK_MT7621
-	select PHYLIB
-
-config NET_MEDIATEK_MDIO_MT7620
-	def_bool NET_MEDIATEK_SOC_STAGING
-	depends on NET_MEDIATEK_MT7621
-	select NET_MEDIATEK_MDIO
-
-config NET_MEDIATEK_GSW_MT7621
-	def_tristate NET_MEDIATEK_SOC_STAGING
-	depends on NET_MEDIATEK_MT7621
-
-endif #NET_VENDOR_MEDIATEK_STAGING

drivers/staging/mt7621-eth/Makefile

-#
-# Makefile for the Ralink SoCs built-in ethernet macs
-#
-
-mtk-eth-soc-y					+= mtk_eth_soc.o ethtool.o
-
-mtk-eth-soc-$(CONFIG_NET_MEDIATEK_MDIO)		+= mdio.o
-mtk-eth-soc-$(CONFIG_NET_MEDIATEK_MDIO_MT7620)	+= mdio_mt7620.o
-
-mtk-eth-soc-$(CONFIG_NET_MEDIATEK_MT7621)	+= soc_mt7621.o
-
-obj-$(CONFIG_NET_MEDIATEK_GSW_MT7621)		+= gsw_mt7621.o
-
-obj-$(CONFIG_NET_MEDIATEK_SOC_STAGING)		+= mtk-eth-soc.o

drivers/staging/mt7621-eth/TODO

-
-- verify devicetree documentation is consistent with code
-- fix ethtool - currently doesn't return valid data.
-- general code review and clean up
-- add support for second MAC on mt7621
-- convert gsw code to use switchdev interfaces
-- md7620_mmi_write etc should probably be wrapped
-  in a regmap abstraction.
-- Get soc_mt7621 to work with QDMA TX if possible.
-- Ensure phys are correctly configured when a cable
-  is plugged in.
-
-Cc: NeilBrown <neil@brown.name>

drivers/staging/mt7621-eth/ethtool.c

-// SPDX-License-Identifier: GPL-2.0
-/*   This program is free software; you can redistribute it and/or modify
- *   it under the terms of the GNU General Public License as published by
- *   the Free Software Foundation; version 2 of the License
- *
- *   This program is distributed in the hope that it will be useful,
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *   GNU General Public License for more details.
- *
- *   Copyright (C) 2009-2016 John Crispin <blogic@openwrt.org>
- *   Copyright (C) 2009-2016 Felix Fietkau <nbd@openwrt.org>
- *   Copyright (C) 2013-2016 Michael Lee <igvtee@gmail.com>
- */
-
-#include "mtk_eth_soc.h"
-#include "ethtool.h"
-
-struct mtk_stat {
-	char name[ETH_GSTRING_LEN];
-	unsigned int idx;
-};
-
-#define MTK_HW_STAT(stat) { \
-	.name = #stat, \
-	.idx = offsetof(struct mtk_hw_stats, stat) / sizeof(u64) \
-}
-
-static const struct mtk_stat mtk_ethtool_hw_stats[] = {
-	MTK_HW_STAT(tx_bytes),
-	MTK_HW_STAT(tx_packets),
-	MTK_HW_STAT(tx_skip),
-	MTK_HW_STAT(tx_collisions),
-	MTK_HW_STAT(rx_bytes),
-	MTK_HW_STAT(rx_packets),
-	MTK_HW_STAT(rx_overflow),
-	MTK_HW_STAT(rx_fcs_errors),
-	MTK_HW_STAT(rx_short_errors),
-	MTK_HW_STAT(rx_long_errors),
-	MTK_HW_STAT(rx_checksum_errors),
-	MTK_HW_STAT(rx_flow_control_packets),
-};
-
-#define MTK_HW_STATS_LEN	ARRAY_SIZE(mtk_ethtool_hw_stats)
-
-static int mtk_get_link_ksettings(struct net_device *dev,
-				  struct ethtool_link_ksettings *cmd)
-{
-	struct mtk_mac *mac = netdev_priv(dev);
-	int err;
-
-	if (!mac->phy_dev)
-		return -ENODEV;
-
-	if (mac->phy_flags == MTK_PHY_FLAG_ATTACH) {
-		err = phy_read_status(mac->phy_dev);
-		if (err)
-			return -ENODEV;
-	}
-
-	phy_ethtool_ksettings_get(mac->phy_dev, cmd);
-	return 0;
-}
-
-static int mtk_set_link_ksettings(struct net_device *dev,
-				  const struct ethtool_link_ksettings *cmd)
-{
-	struct mtk_mac *mac = netdev_priv(dev);
-
-	if (!mac->phy_dev)
-		return -ENODEV;
-
-	if (cmd->base.phy_address != mac->phy_dev->mdio.addr) {
-		if (mac->hw->phy->phy_node[cmd->base.phy_address]) {
-			mac->phy_dev = mac->hw->phy->phy[cmd->base.phy_address];
-			mac->phy_flags = MTK_PHY_FLAG_PORT;
-		} else if (mac->hw->mii_bus) {
-			mac->phy_dev = mdiobus_get_phy(mac->hw->mii_bus,
-						       cmd->base.phy_address);
-			if (!mac->phy_dev)
-				return -ENODEV;
-			mac->phy_flags = MTK_PHY_FLAG_ATTACH;
-		} else {
-			return -ENODEV;
-		}
-	}
-
-	return phy_ethtool_ksettings_set(mac->phy_dev, cmd);
-}
-
-static void mtk_get_drvinfo(struct net_device *dev,
-			    struct ethtool_drvinfo *info)
-{
-	struct mtk_mac *mac = netdev_priv(dev);
-	struct mtk_soc_data *soc = mac->hw->soc;
-
-	strlcpy(info->driver, mac->hw->dev->driver->name, sizeof(info->driver));
-	strlcpy(info->bus_info, dev_name(mac->hw->dev), sizeof(info->bus_info));
-
-	if (soc->reg_table[MTK_REG_MTK_COUNTER_BASE])
-		info->n_stats = MTK_HW_STATS_LEN;
-}
-
-static u32 mtk_get_msglevel(struct net_device *dev)
-{
-	struct mtk_mac *mac = netdev_priv(dev);
-
-	return mac->hw->msg_enable;
-}
-
-static void mtk_set_msglevel(struct net_device *dev, u32 value)
-{
-	struct mtk_mac *mac = netdev_priv(dev);
-
-	mac->hw->msg_enable = value;
-}
-
-static int mtk_nway_reset(struct net_device *dev)
-{
-	struct mtk_mac *mac = netdev_priv(dev);
-
-	if (!mac->phy_dev)
-		return -EOPNOTSUPP;
-
-	return genphy_restart_aneg(mac->phy_dev);
-}
-
-static u32 mtk_get_link(struct net_device *dev)
-{
-	struct mtk_mac *mac = netdev_priv(dev);
-	int err;
-
-	if (!mac->phy_dev)
-		goto out_get_link;
-
-	if (mac->phy_flags == MTK_PHY_FLAG_ATTACH) {
-		err = genphy_update_link(mac->phy_dev);
-		if (err)
-			goto out_get_link;
-	}
-
-	return mac->phy_dev->link;
-
-out_get_link:
-	return ethtool_op_get_link(dev);
-}
-
-static int mtk_set_ringparam(struct net_device *dev,
-			     struct ethtool_ringparam *ring)
-{
-	struct mtk_mac *mac = netdev_priv(dev);
-
-	if ((ring->tx_pending < 2) ||
-	    (ring->rx_pending < 2) ||
-	    (ring->rx_pending > mac->hw->soc->dma_ring_size) ||
-	    (ring->tx_pending > mac->hw->soc->dma_ring_size))
-		return -EINVAL;
-
-	dev->netdev_ops->ndo_stop(dev);
-
-	mac->hw->tx_ring.tx_ring_size = BIT(fls(ring->tx_pending) - 1);
-	mac->hw->rx_ring[0].rx_ring_size = BIT(fls(ring->rx_pending) - 1);
-
-	return dev->netdev_ops->ndo_open(dev);
-}
-
-static void mtk_get_ringparam(struct net_device *dev,
-			      struct ethtool_ringparam *ring)
-{
-	struct mtk_mac *mac = netdev_priv(dev);
-
-	ring->rx_max_pending = mac->hw->soc->dma_ring_size;
-	ring->tx_max_pending = mac->hw->soc->dma_ring_size;
-	ring->rx_pending = mac->hw->rx_ring[0].rx_ring_size;
-	ring->tx_pending = mac->hw->tx_ring.tx_ring_size;
-}
-
-static void mtk_get_strings(struct net_device *dev, u32 stringset, u8 *data)
-{
-	int i;
-
-	switch (stringset) {
-	case ETH_SS_STATS:
-		for (i = 0; i < MTK_HW_STATS_LEN; i++) {
-			memcpy(data, mtk_ethtool_hw_stats[i].name,
-			       ETH_GSTRING_LEN);
-			data += ETH_GSTRING_LEN;
-		}
-		break;
-	}
-}
-
-static int mtk_get_sset_count(struct net_device *dev, int sset)
-{
-	switch (sset) {
-	case ETH_SS_STATS:
-		return MTK_HW_STATS_LEN;
-	default:
-		return -EOPNOTSUPP;
-	}
-}
-
-static void mtk_get_ethtool_stats(struct net_device *dev,
-				  struct ethtool_stats *stats, u64 *data)
-{
-	struct mtk_mac *mac = netdev_priv(dev);
-	struct mtk_hw_stats *hwstats = mac->hw_stats;
-	unsigned int start;
-	int i;
-
-	if (netif_running(dev) && netif_device_present(dev)) {
-		if (spin_trylock(&hwstats->stats_lock)) {
-			mtk_stats_update_mac(mac);
-			spin_unlock(&hwstats->stats_lock);
-		}
-	}
-
-	do {
-		start = u64_stats_fetch_begin_irq(&hwstats->syncp);
-		for (i = 0; i < MTK_HW_STATS_LEN; i++)
-			data[i] = ((u64 *)hwstats)[mtk_ethtool_hw_stats[i].idx];
-
-	} while (u64_stats_fetch_retry_irq(&hwstats->syncp, start));
-}
-
-static struct ethtool_ops mtk_ethtool_ops = {
-	.get_link_ksettings     = mtk_get_link_ksettings,
-	.set_link_ksettings     = mtk_set_link_ksettings,
-	.get_drvinfo		= mtk_get_drvinfo,
-	.get_msglevel		= mtk_get_msglevel,
-	.set_msglevel		= mtk_set_msglevel,
-	.nway_reset		= mtk_nway_reset,
-	.get_link		= mtk_get_link,
-	.set_ringparam		= mtk_set_ringparam,
-	.get_ringparam		= mtk_get_ringparam,
-};
-
-void mtk_set_ethtool_ops(struct net_device *netdev)
-{
-	struct mtk_mac *mac = netdev_priv(netdev);
-	struct mtk_soc_data *soc = mac->hw->soc;
-
-	if (soc->reg_table[MTK_REG_MTK_COUNTER_BASE]) {
-		mtk_ethtool_ops.get_strings = mtk_get_strings;
-		mtk_ethtool_ops.get_sset_count = mtk_get_sset_count;
-		mtk_ethtool_ops.get_ethtool_stats = mtk_get_ethtool_stats;
-	}
-
-	netdev->ethtool_ops = &mtk_ethtool_ops;
-}

drivers/staging/mt7621-eth/ethtool.h

-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- *   Copyright (C) 2009-2016 John Crispin <blogic@openwrt.org>
- *   Copyright (C) 2009-2016 Felix Fietkau <nbd@openwrt.org>
- *   Copyright (C) 2013-2016 Michael Lee <igvtee@gmail.com>
- */
-
-#ifndef MTK_ETHTOOL_H
-#define MTK_ETHTOOL_H
-
-#include <linux/ethtool.h>
-
-void mtk_set_ethtool_ops(struct net_device *netdev);
-
-#endif /* MTK_ETHTOOL_H */

drivers/staging/mt7621-eth/gsw_mt7620.h

-/*   This program is free software; you can redistribute it and/or modify
- *   it under the terms of the GNU General Public License as published by
- *   the Free Software Foundation; version 2 of the License
- *
- *   This program is distributed in the hope that it will be useful,
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *   GNU General Public License for more details.
- *
- *   Copyright (C) 2009-2016 John Crispin <blogic@openwrt.org>
- *   Copyright (C) 2009-2016 Felix Fietkau <nbd@openwrt.org>
- *   Copyright (C) 2013-2016 Michael Lee <igvtee@gmail.com>
- */
-
-#ifndef _RALINK_GSW_MT7620_H__
-#define _RALINK_GSW_MT7620_H__
-
-#define GSW_REG_PHY_TIMEOUT	(5 * HZ)
-
-#define MT7620_GSW_REG_PIAC	0x0004
-
-#define GSW_NUM_VLANS		16
-#define GSW_NUM_VIDS		4096
-#define GSW_NUM_PORTS		7
-#define GSW_PORT6		6
-
-#define GSW_MDIO_ACCESS		BIT(31)
-#define GSW_MDIO_READ		BIT(19)
-#define GSW_MDIO_WRITE		BIT(18)
-#define GSW_MDIO_START		BIT(16)
-#define GSW_MDIO_ADDR_SHIFT	20
-#define GSW_MDIO_REG_SHIFT	25
-
-#define GSW_REG_PORT_PMCR(x)	(0x3000 + (x * 0x100))
-#define GSW_REG_PORT_STATUS(x)	(0x3008 + (x * 0x100))
-#define GSW_REG_SMACCR0		0x3fE4
-#define GSW_REG_SMACCR1		0x3fE8
-#define GSW_REG_CKGCR		0x3ff0
-
-#define GSW_REG_IMR		0x7008
-#define GSW_REG_ISR		0x700c
-#define GSW_REG_GPC1		0x7014
-
-#define SYSC_REG_CHIP_REV_ID	0x0c
-#define SYSC_REG_CFG		0x10
-#define SYSC_REG_CFG1		0x14
-#define RST_CTRL_MCM		BIT(2)
-#define SYSC_PAD_RGMII2_MDIO	0x58
-#define SYSC_GPIO_MODE		0x60
-
-#define PORT_IRQ_ST_CHG		0x7f
-
-#define MT7621_ESW_PHY_POLLING	0x0000
-#define MT7620_ESW_PHY_POLLING	0x7000
-
-#define	PMCR_IPG		BIT(18)
-#define	PMCR_MAC_MODE		BIT(16)
-#define	PMCR_FORCE		BIT(15)
-#define	PMCR_TX_EN		BIT(14)
-#define	PMCR_RX_EN		BIT(13)
-#define	PMCR_BACKOFF		BIT(9)
-#define	PMCR_BACKPRES		BIT(8)
-#define	PMCR_RX_FC		BIT(5)
-#define	PMCR_TX_FC		BIT(4)
-#define	PMCR_SPEED(_x)		(_x << 2)
-#define	PMCR_DUPLEX		BIT(1)
-#define	PMCR_LINK		BIT(0)
-
-#define PHY_AN_EN		BIT(31)
-#define PHY_PRE_EN		BIT(30)
-#define PMY_MDC_CONF(_x)	((_x & 0x3f) << 24)
-
-/* ethernet subsystem config register */
-#define ETHSYS_SYSCFG0		0x14
-/* ethernet subsystem clock register */
-#define ETHSYS_CLKCFG0		0x2c
-#define ETHSYS_TRGMII_CLK_SEL362_5	BIT(11)
-
-/* p5 RGMII wrapper TX clock control register */
-#define MT7530_P5RGMIITXCR	0x7b04
-/* p5 RGMII wrapper RX clock control register */
-#define MT7530_P5RGMIIRXCR	0x7b00
-/* TRGMII TDX ODT registers */
-#define MT7530_TRGMII_TD0_ODT	0x7a54
-#define MT7530_TRGMII_TD1_ODT	0x7a5c
-#define MT7530_TRGMII_TD2_ODT	0x7a64
-#define MT7530_TRGMII_TD3_ODT	0x7a6c
-#define MT7530_TRGMII_TD4_ODT	0x7a74
-#define MT7530_TRGMII_TD5_ODT	0x7a7c
-/* TRGMII TCK ctrl register */
-#define MT7530_TRGMII_TCK_CTRL	0x7a78
-/* TRGMII Tx ctrl register */
-#define MT7530_TRGMII_TXCTRL	0x7a40
-/* port 6 extended control register */
-#define MT7530_P6ECR            0x7830
-/* IO driver control register */
-#define MT7530_IO_DRV_CR	0x7810
-/* top signal control register */
-#define MT7530_TOP_SIG_CTRL	0x7808
-/* modified hwtrap register */
-#define MT7530_MHWTRAP		0x7804
-/* hwtrap status register */
-#define MT7530_HWTRAP		0x7800
-/* status interrupt register */
-#define MT7530_SYS_INT_STS	0x700c
-/* system nterrupt register */
-#define MT7530_SYS_INT_EN	0x7008
-/* system control register */
-#define MT7530_SYS_CTRL		0x7000
-/* port MAC status register */
-#define MT7530_PMSR_P(x)	(0x3008 + (x * 0x100))
-/* port MAC control register */
-#define MT7530_PMCR_P(x)	(0x3000 + (x * 0x100))
-
-#define MT7621_XTAL_SHIFT	6
-#define MT7621_XTAL_MASK	0x7
-#define MT7621_XTAL_25		6
-#define MT7621_XTAL_40		3
-#define MT7621_MDIO_DRV_MASK	(3 << 4)
-#define MT7621_GE1_MODE_MASK	(3 << 12)
-
-#define TRGMII_TXCTRL_TXC_INV	BIT(30)
-#define P6ECR_INTF_MODE_RGMII	BIT(1)
-#define P5RGMIIRXCR_C_ALIGN	BIT(8)
-#define P5RGMIIRXCR_DELAY_2	BIT(1)
-#define P5RGMIITXCR_DELAY_2	(BIT(8) | BIT(2))
-
-/* TOP_SIG_CTRL bits */
-#define TOP_SIG_CTRL_NORMAL	(BIT(17) | BIT(16))
-
-/* MHWTRAP bits */
-#define MHWTRAP_MANUAL		BIT(16)
-#define MHWTRAP_P5_MAC_SEL	BIT(13)
-#define MHWTRAP_P6_DIS		BIT(8)
-#define MHWTRAP_P5_RGMII_MODE	BIT(7)
-#define MHWTRAP_P5_DIS		BIT(6)
-#define MHWTRAP_PHY_ACCESS	BIT(5)
-
-/* HWTRAP bits */
-#define HWTRAP_XTAL_SHIFT	9
-#define HWTRAP_XTAL_MASK	0x3
-
-/* SYS_CTRL bits */
-#define SYS_CTRL_SW_RST		BIT(1)
-#define SYS_CTRL_REG_RST	BIT(0)
-
-/* PMCR bits */
-#define PMCR_IFG_XMIT_96	BIT(18)
-#define PMCR_MAC_MODE		BIT(16)
-#define PMCR_FORCE_MODE		BIT(15)
-#define PMCR_TX_EN		BIT(14)
-#define PMCR_RX_EN		BIT(13)
-#define PMCR_BACK_PRES_EN	BIT(9)
-#define PMCR_BACKOFF_EN		BIT(8)
-#define PMCR_TX_FC_EN		BIT(5)
-#define PMCR_RX_FC_EN		BIT(4)
-#define PMCR_FORCE_SPEED_1000	BIT(3)
-#define PMCR_FORCE_FDX		BIT(1)
-#define PMCR_FORCE_LNK		BIT(0)
-#define PMCR_FIXED_LINK		(PMCR_IFG_XMIT_96 | PMCR_MAC_MODE | \
-				 PMCR_FORCE_MODE | PMCR_TX_EN | PMCR_RX_EN | \
-				 PMCR_BACK_PRES_EN | PMCR_BACKOFF_EN | \
-				 PMCR_FORCE_SPEED_1000 | PMCR_FORCE_FDX | \
-				 PMCR_FORCE_LNK)
-
-#define PMCR_FIXED_LINK_FC	(PMCR_FIXED_LINK | \
-				 PMCR_TX_FC_EN | PMCR_RX_FC_EN)
-
-/* TRGMII control registers */
-#define GSW_INTF_MODE		0x390
-#define GSW_TRGMII_TD0_ODT	0x354
-#define GSW_TRGMII_TD1_ODT	0x35c
-#define GSW_TRGMII_TD2_ODT	0x364
-#define GSW_TRGMII_TD3_ODT	0x36c
-#define GSW_TRGMII_TXCTL_ODT	0x374
-#define GSW_TRGMII_TCK_ODT	0x37c
-#define GSW_TRGMII_RCK_CTRL	0x300
-
-#define INTF_MODE_TRGMII	BIT(1)
-#define TRGMII_RCK_CTRL_RX_RST	BIT(31)
-
-/* Mac control registers */
-#define MTK_MAC_P2_MCR		0x200
-#define MTK_MAC_P1_MCR		0x100
-
-#define MAC_MCR_MAX_RX_2K	BIT(29)
-#define MAC_MCR_IPG_CFG		(BIT(18) | BIT(16))
-#define MAC_MCR_FORCE_MODE	BIT(15)
-#define MAC_MCR_TX_EN		BIT(14)
-#define MAC_MCR_RX_EN		BIT(13)
-#define MAC_MCR_BACKOFF_EN	BIT(9)
-#define MAC_MCR_BACKPR_EN	BIT(8)
-#define MAC_MCR_FORCE_RX_FC	BIT(5)
-#define MAC_MCR_FORCE_TX_FC	BIT(4)
-#define MAC_MCR_SPEED_1000	BIT(3)
-#define MAC_MCR_FORCE_DPX	BIT(1)
-#define MAC_MCR_FORCE_LINK	BIT(0)
-#define MAC_MCR_FIXED_LINK	(MAC_MCR_MAX_RX_2K | MAC_MCR_IPG_CFG | \
-				 MAC_MCR_FORCE_MODE | MAC_MCR_TX_EN | \
-				 MAC_MCR_RX_EN | MAC_MCR_BACKOFF_EN | \
-				 MAC_MCR_BACKPR_EN | MAC_MCR_FORCE_RX_FC | \
-				 MAC_MCR_FORCE_TX_FC | MAC_MCR_SPEED_1000 | \
-				 MAC_MCR_FORCE_DPX | MAC_MCR_FORCE_LINK)
-#define MAC_MCR_FIXED_LINK_FC	(MAC_MCR_MAX_RX_2K | MAC_MCR_IPG_CFG | \
-				 MAC_MCR_FIXED_LINK)
-
-/* possible XTAL speed */
-#define	MT7623_XTAL_40		0
-#define MT7623_XTAL_20		1
-#define MT7623_XTAL_25		3
-
-/* GPIO port control registers */
-#define	GPIO_OD33_CTRL8		0x4c0
-#define	GPIO_BIAS_CTRL		0xed0
-#define GPIO_DRV_SEL10		0xf00
-
-/* on MT7620 the functio of port 4 can be software configured */
-enum {
-	PORT4_EPHY = 0,
-	PORT4_EXT,
-};
-
-/* struct mt7620_gsw -	the structure that holds the SoC specific data
- * @dev:		The Device struct
- * @base:		The base address
- * @piac_offset:	The PIAC base may change depending on SoC
- * @irq:		The IRQ we are using
- * @port4:		The port4 mode on MT7620
- * @autopoll:		Is MDIO autopolling enabled
- * @ethsys:		The ethsys register map
- * @pctl:		The pin control register map
- * @clk_gsw:		The switch clock
- * @clk_gp1:		The gmac1 clock
- * @clk_gp2:		The gmac2 clock
- * @clk_trgpll:		The trgmii pll clock
- */
-struct mt7620_gsw {
-	struct device		*dev;
-	void __iomem		*base;
-	u32			piac_offset;
-	int			irq;
-	int			port4;
-	unsigned long int	autopoll;
-
-	struct regmap		*ethsys;
-	struct regmap		*pctl;
-
-	struct clk		*clk_gsw;
-	struct clk		*clk_gp1;
-	struct clk		*clk_gp2;
-	struct clk		*clk_trgpll;
-};
-
-/* switch register I/O wrappers */
-void mtk_switch_w32(struct mt7620_gsw *gsw, u32 val, unsigned int reg);
-u32 mtk_switch_r32(struct mt7620_gsw *gsw, unsigned int reg);
-
-/* the callback used by the driver core to bringup the switch */
-int mtk_gsw_init(struct mtk_eth *eth);
-
-/* MDIO access wrappers */
-int mt7620_mdio_write(struct mii_bus *bus, int phy_addr, int phy_reg, u16 val);
-int mt7620_mdio_read(struct mii_bus *bus, int phy_addr, int phy_reg);
-void mt7620_mdio_link_adjust(struct mtk_eth *eth, int port);
-int mt7620_has_carrier(struct mtk_eth *eth);
-void mt7620_print_link_state(struct mtk_eth *eth, int port, int link,
-			     int speed, int duplex);
-void mt7530_mdio_w32(struct mt7620_gsw *gsw, u32 reg, u32 val);
-u32 mt7530_mdio_r32(struct mt7620_gsw *gsw, u32 reg);
-void mt7530_mdio_m32(struct mt7620_gsw *gsw, u32 mask, u32 set, u32 reg);
-
-u32 _mt7620_mii_write(struct mt7620_gsw *gsw, u32 phy_addr,
-		      u32 phy_register, u32 write_data);
-u32 _mt7620_mii_read(struct mt7620_gsw *gsw, int phy_addr, int phy_reg);
-void mt7620_handle_carrier(struct mtk_eth *eth);
-
-#endif

drivers/staging/mt7621-eth/gsw_mt7621.c

-/*   This program is free software; you can redistribute it and/or modify
- *   it under the terms of the GNU General Public License as published by
- *   the Free Software Foundation; version 2 of the License
- *
- *   This program is distributed in the hope that it will be useful,
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *   GNU General Public License for more details.
- *
- *   Copyright (C) 2009-2016 John Crispin <blogic@openwrt.org>
- *   Copyright (C) 2009-2016 Felix Fietkau <nbd@openwrt.org>
- *   Copyright (C) 2013-2016 Michael Lee <igvtee@gmail.com>
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/platform_device.h>
-#include <linux/of_device.h>
-#include <linux/of_irq.h>
-
-#include <ralink_regs.h>
-
-#include "mtk_eth_soc.h"
-#include "gsw_mt7620.h"
-
-void mtk_switch_w32(struct mt7620_gsw *gsw, u32 val, unsigned int reg)
-{
-	iowrite32(val, gsw->base + reg);
-}
-EXPORT_SYMBOL_GPL(mtk_switch_w32);
-
-u32 mtk_switch_r32(struct mt7620_gsw *gsw, unsigned int reg)
-{
-	return ioread32(gsw->base + reg);
-}
-EXPORT_SYMBOL_GPL(mtk_switch_r32);
-
-static irqreturn_t gsw_interrupt_mt7621(int irq, void *_eth)
-{
-	struct mtk_eth *eth = (struct mtk_eth *)_eth;
-	struct mt7620_gsw *gsw = (struct mt7620_gsw *)eth->sw_priv;
-	u32 reg, i;
-
-	reg = mt7530_mdio_r32(gsw, MT7530_SYS_INT_STS);
-
-	for (i = 0; i < 5; i++) {
-		unsigned int link;
-
-		if ((reg & BIT(i)) == 0)
-			continue;
-
-		link = mt7530_mdio_r32(gsw, MT7530_PMSR_P(i)) & 0x1;
-
-		if (link == eth->link[i])
-			continue;
-
-		eth->link[i] = link;
-		if (link)
-			netdev_info(*eth->netdev,
-				    "port %d link up\n", i);
-		else
-			netdev_info(*eth->netdev,
-				    "port %d link down\n", i);
-	}
-
-	mt7530_mdio_w32(gsw, MT7530_SYS_INT_STS, 0x1f);
-
-	return IRQ_HANDLED;
-}
-
-static void mt7621_hw_init(struct mtk_eth *eth, struct mt7620_gsw *gsw,
-			   struct device_node *np)
-{
-	u32 i;
-	u32 val;
-
-	/* hardware reset the switch */
-	mtk_reset(eth, RST_CTRL_MCM);
-	mdelay(10);
-
-	/* reduce RGMII2 PAD driving strength */
-	rt_sysc_m32(MT7621_MDIO_DRV_MASK, 0, SYSC_PAD_RGMII2_MDIO);
-
-	/* gpio mux - RGMII1=Normal mode */
-	rt_sysc_m32(BIT(14), 0, SYSC_GPIO_MODE);
-
-	/* set GMAC1 RGMII mode */
-	rt_sysc_m32(MT7621_GE1_MODE_MASK, 0, SYSC_REG_CFG1);
-
-	/* enable MDIO to control MT7530 */
-	rt_sysc_m32(3 << 12, 0, SYSC_GPIO_MODE);
-
-	/* turn off all PHYs */
-	for (i = 0; i <= 4; i++) {
-		val = _mt7620_mii_read(gsw, i, 0x0);
-		val |= BIT(11);
-		_mt7620_mii_write(gsw, i, 0x0, val);
-	}
-
-	/* reset the switch */
-	mt7530_mdio_w32(gsw, MT7530_SYS_CTRL,
-			SYS_CTRL_SW_RST | SYS_CTRL_REG_RST);
-	usleep_range(10, 20);
-
-	if ((rt_sysc_r32(SYSC_REG_CHIP_REV_ID) & 0xFFFF) == 0x0101) {
-		/* GE1, Force 1000M/FD, FC ON, MAX_RX_LENGTH 1536 */
-		mtk_switch_w32(gsw, MAC_MCR_FIXED_LINK, MTK_MAC_P2_MCR);
-		mt7530_mdio_w32(gsw, MT7530_PMCR_P(6), PMCR_FIXED_LINK);
-	} else {
-		/* GE1, Force 1000M/FD, FC ON, MAX_RX_LENGTH 1536 */
-		mtk_switch_w32(gsw, MAC_MCR_FIXED_LINK_FC, MTK_MAC_P1_MCR);
-		mt7530_mdio_w32(gsw, MT7530_PMCR_P(6), PMCR_FIXED_LINK_FC);
-	}
-
-	/* GE2, Link down */
-	mtk_switch_w32(gsw, MAC_MCR_FORCE_MODE, MTK_MAC_P2_MCR);
-
-	/* Enable Port 6, P5 as GMAC5, P5 disable */
-	val = mt7530_mdio_r32(gsw, MT7530_MHWTRAP);
-	/* Enable Port 6 */
-	val &= ~MHWTRAP_P6_DIS;
-	/* Disable Port 5 */
-	val |= MHWTRAP_P5_DIS;
-	/* manual override of HW-Trap */
-	val |= MHWTRAP_MANUAL;
-	mt7530_mdio_w32(gsw, MT7530_MHWTRAP, val);
-
-	val = rt_sysc_r32(SYSC_REG_CFG);
-	val = (val >> MT7621_XTAL_SHIFT) & MT7621_XTAL_MASK;
-	if (val < MT7621_XTAL_25 && val >= MT7621_XTAL_40) {
-		/* 40Mhz */
-
-		/* disable MT7530 core clock */
-		_mt7620_mii_write(gsw, 0, 13, 0x1f);
-		_mt7620_mii_write(gsw, 0, 14, 0x410);
-		_mt7620_mii_write(gsw, 0, 13, 0x401f);
-		_mt7620_mii_write(gsw, 0, 14, 0x0);
-
-		/* disable MT7530 PLL */
-		_mt7620_mii_write(gsw, 0, 13, 0x1f);
-		_mt7620_mii_write(gsw, 0, 14, 0x40d);
-		_mt7620_mii_write(gsw, 0, 13, 0x401f);
-		_mt7620_mii_write(gsw, 0, 14, 0x2020);
-
-		/* for MT7530 core clock = 500Mhz */
-		_mt7620_mii_write(gsw, 0, 13, 0x1f);
-		_mt7620_mii_write(gsw, 0, 14, 0x40e);
-		_mt7620_mii_write(gsw, 0, 13, 0x401f);
-		_mt7620_mii_write(gsw, 0, 14, 0x119);
-
-		/* enable MT7530 PLL */
-		_mt7620_mii_write(gsw, 0, 13, 0x1f);
-		_mt7620_mii_write(gsw, 0, 14, 0x40d);
-		_mt7620_mii_write(gsw, 0, 13, 0x401f);
-		_mt7620_mii_write(gsw, 0, 14, 0x2820);
-
-		usleep_range(20, 40);
-
-		/* enable MT7530 core clock */
-		_mt7620_mii_write(gsw, 0, 13, 0x1f);
-		_mt7620_mii_write(gsw, 0, 14, 0x410);
-		_mt7620_mii_write(gsw, 0, 13, 0x401f);
-	}
-
-	/* RGMII */
-	_mt7620_mii_write(gsw, 0, 14, 0x1);
-
-	/* set MT7530 central align */
-	mt7530_mdio_m32(gsw, BIT(0), P6ECR_INTF_MODE_RGMII, MT7530_P6ECR);
-	mt7530_mdio_m32(gsw, TRGMII_TXCTRL_TXC_INV, 0,
-			MT7530_TRGMII_TXCTRL);
-	mt7530_mdio_w32(gsw, MT7530_TRGMII_TCK_CTRL, 0x855);
-
-	/* delay setting for 10/1000M */
-	mt7530_mdio_w32(gsw, MT7530_P5RGMIIRXCR,
-			P5RGMIIRXCR_C_ALIGN | P5RGMIIRXCR_DELAY_2);
-	mt7530_mdio_w32(gsw, MT7530_P5RGMIITXCR, 0x14);
-
-	/* lower Tx Driving*/
-	mt7530_mdio_w32(gsw, MT7530_TRGMII_TD0_ODT, 0x44);
-	mt7530_mdio_w32(gsw, MT7530_TRGMII_TD1_ODT, 0x44);
-	mt7530_mdio_w32(gsw, MT7530_TRGMII_TD2_ODT, 0x44);
-	mt7530_mdio_w32(gsw, MT7530_TRGMII_TD3_ODT, 0x44);
-	mt7530_mdio_w32(gsw, MT7530_TRGMII_TD4_ODT, 0x44);
-	mt7530_mdio_w32(gsw, MT7530_TRGMII_TD5_ODT, 0x44);
-
-	/* turn on all PHYs */
-	for (i = 0; i <= 4; i++) {
-		val = _mt7620_mii_read(gsw, i, 0);
-		val &= ~BIT(11);
-		_mt7620_mii_write(gsw, i, 0, val);
-	}
-
-#define MT7530_NUM_PORTS 8
-#define REG_ESW_PORT_PCR(x)    (0x2004 | ((x) << 8))
-#define REG_ESW_PORT_PVC(x)    (0x2010 | ((x) << 8))
-#define REG_ESW_PORT_PPBV1(x)  (0x2014 | ((x) << 8))
-#define MT7530_CPU_PORT                6
-
-	/* This is copied from mt7530_apply_config in libreCMC driver */
-	{
-		int i;
-
-		for (i = 0; i < MT7530_NUM_PORTS; i++)
-			mt7530_mdio_w32(gsw, REG_ESW_PORT_PCR(i), 0x00400000);
-
-		mt7530_mdio_w32(gsw, REG_ESW_PORT_PCR(MT7530_CPU_PORT),
-				0x00ff0000);
-
-		for (i = 0; i < MT7530_NUM_PORTS; i++)
-			mt7530_mdio_w32(gsw, REG_ESW_PORT_PVC(i), 0x810000c0);
-	}
-
-	/* enable irq */
-	mt7530_mdio_m32(gsw, 0, 3 << 16, MT7530_TOP_SIG_CTRL);
-	mt7530_mdio_w32(gsw, MT7530_SYS_INT_EN, 0x1f);
-}
-
-static const struct of_device_id mediatek_gsw_match[] = {
-	{ .compatible = "mediatek,mt7621-gsw" },
-	{},
-};
-MODULE_DEVICE_TABLE(of, mediatek_gsw_match);
-
-int mtk_gsw_init(struct mtk_eth *eth)
-{
-	struct device_node *np = eth->switch_np;
-	struct platform_device *pdev = of_find_device_by_node(np);
-	struct mt7620_gsw *gsw;
-
-	if (!pdev)
-		return -ENODEV;
-
-	if (!of_device_is_compatible(np, mediatek_gsw_match->compatible))
-		return -EINVAL;
-
-	gsw = platform_get_drvdata(pdev);
-	eth->sw_priv = gsw;
-
-	if (!gsw->irq)
-		return -EINVAL;
-
-	request_irq(gsw->irq, gsw_interrupt_mt7621, 0,
-		    "gsw", eth);
-	disable_irq(gsw->irq);
-
-	mt7621_hw_init(eth, gsw, np);
-
-	enable_irq(gsw->irq);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(mtk_gsw_init);
-
-static int mt7621_gsw_probe(struct platform_device *pdev)
-{
-	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	struct mt7620_gsw *gsw;
-
-	gsw = devm_kzalloc(&pdev->dev, sizeof(struct mt7620_gsw), GFP_KERNEL);
-	if (!gsw)
-		return -ENOMEM;
-
-	gsw->base = devm_ioremap_resource(&pdev->dev, res);
-	if (IS_ERR(gsw->base))
-		return PTR_ERR(gsw->base);
-
-	gsw->dev = &pdev->dev;
-	gsw->irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
-
-	platform_set_drvdata(pdev, gsw);
-
-	return 0;
-}
-
-static int mt7621_gsw_remove(struct platform_device *pdev)
-{
-	platform_set_drvdata(pdev, NULL);
-
-	return 0;
-}
-
-static struct platform_driver gsw_driver = {
-	.probe = mt7621_gsw_probe,
-	.remove = mt7621_gsw_remove,
-	.driver = {
-		.name = "mt7621-gsw",
-		.of_match_table = mediatek_gsw_match,
-	},
-};
-
-module_platform_driver(gsw_driver);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
-MODULE_DESCRIPTION("GBit switch driver for Mediatek MT7621 SoC");

drivers/staging/mt7621-eth/mdio.c

-/*   This program is free software; you can redistribute it and/or modify
- *   it under the terms of the GNU General Public License as published by
- *   the Free Software Foundation; version 2 of the License
- *
- *   Copyright (C) 2009-2016 John Crispin <blogic@openwrt.org>
- *   Copyright (C) 2009-2016 Felix Fietkau <nbd@openwrt.org>
- *   Copyright (C) 2013-2016 Michael Lee <igvtee@gmail.com>
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/phy.h>
-#include <linux/of_net.h>
-#include <linux/of_mdio.h>
-
-#include "mtk_eth_soc.h"
-#include "mdio.h"
-
-static int mtk_mdio_reset(struct mii_bus *bus)
-{
-	/* TODO */
-	return 0;
-}
-
-static void mtk_phy_link_adjust(struct net_device *dev)
-{
-	struct mtk_eth *eth = netdev_priv(dev);
-	unsigned long flags;
-	int i;
-
-	spin_lock_irqsave(&eth->phy->lock, flags);
-	for (i = 0; i < 8; i++) {
-		if (eth->phy->phy_node[i]) {
-			struct phy_device *phydev = eth->phy->phy[i];
-			int status_change = 0;
-
-			if (phydev->link)
-				if (eth->phy->duplex[i] != phydev->duplex ||
-				    eth->phy->speed[i] != phydev->speed)
-					status_change = 1;
-
-			if (phydev->link != eth->link[i])
-				status_change = 1;
-
-			switch (phydev->speed) {
-			case SPEED_1000:
-			case SPEED_100:
-			case SPEED_10:
-				eth->link[i] = phydev->link;
-				eth->phy->duplex[i] = phydev->duplex;
-				eth->phy->speed[i] = phydev->speed;
-
-				if (status_change &&
-				    eth->soc->mdio_adjust_link)
-					eth->soc->mdio_adjust_link(eth, i);
-				break;
-			}
-		}
-	}
-	spin_unlock_irqrestore(&eth->phy->lock, flags);
-}
-
-int mtk_connect_phy_node(struct mtk_eth *eth, struct mtk_mac *mac,
-			 struct device_node *phy_node)
-{
-	const __be32 *_port = NULL;
-	struct phy_device *phydev;
-	int phy_mode, port;
-
-	_port = of_get_property(phy_node, "reg", NULL);
-
-	if (!_port || (be32_to_cpu(*_port) >= 0x20)) {
-		pr_err("%pOFn: invalid port id\n", phy_node);
-		return -EINVAL;
-	}
-	port = be32_to_cpu(*_port);
-	phy_mode = of_get_phy_mode(phy_node);
-	if (phy_mode < 0) {
-		dev_err(eth->dev, "incorrect phy-mode %d\n", phy_mode);
-		eth->phy->phy_node[port] = NULL;
-		return -EINVAL;
-	}
-
-	phydev = of_phy_connect(eth->netdev[mac->id], phy_node,
-				mtk_phy_link_adjust, 0, phy_mode);
-	if (!phydev) {
-		dev_err(eth->dev, "could not connect to PHY\n");
-		eth->phy->phy_node[port] = NULL;
-		return -ENODEV;
-	}
-
-	phydev->supported &= PHY_1000BT_FEATURES;
-	phydev->advertising = phydev->supported;
-
-	dev_info(eth->dev,
-		 "connected port %d to PHY at %s [uid=%08x, driver=%s]\n",
-		 port, phydev_name(phydev), phydev->phy_id,
-		 phydev->drv->name);
-
-	eth->phy->phy[port] = phydev;
-	eth->link[port] = 0;
-
-	return 0;
-}
-
-static void phy_init(struct mtk_eth *eth, struct mtk_mac *mac,
-		     struct phy_device *phy)
-{
-	phy_attach(eth->netdev[mac->id], phydev_name(phy),
-		   PHY_INTERFACE_MODE_MII);
-
-	phy->autoneg = AUTONEG_ENABLE;
-	phy->speed = 0;
-	phy->duplex = 0;
-	phy_set_max_speed(phy, SPEED_100);
-	phy->advertising = phy->supported | ADVERTISED_Autoneg;
-
-	phy_start_aneg(phy);
-}
-
-static int mtk_phy_connect(struct mtk_mac *mac)
-{
-	struct mtk_eth *eth = mac->hw;
-	int i;
-
-	for (i = 0; i < 8; i++) {
-		if (eth->phy->phy_node[i]) {
-			if (!mac->phy_dev) {
-				mac->phy_dev = eth->phy->phy[i];
-				mac->phy_flags = MTK_PHY_FLAG_PORT;
-			}
-		} else if (eth->mii_bus) {
-			struct phy_device *phy;
-
-			phy = mdiobus_get_phy(eth->mii_bus, i);
-			if (phy) {
-				phy_init(eth, mac, phy);
-				if (!mac->phy_dev) {
-					mac->phy_dev = phy;
-					mac->phy_flags = MTK_PHY_FLAG_ATTACH;
-				}
-			}
-		}
-	}
-
-	return 0;
-}
-
-static void mtk_phy_disconnect(struct mtk_mac *mac)
-{
-	struct mtk_eth *eth = mac->hw;
-	unsigned long flags;
-	int i;
-
-	for (i = 0; i < 8; i++)
-		if (eth->phy->phy_fixed[i]) {
-			spin_lock_irqsave(&eth->phy->lock, flags);
-			eth->link[i] = 0;
-			if (eth->soc->mdio_adjust_link)
-				eth->soc->mdio_adjust_link(eth, i);
-			spin_unlock_irqrestore(&eth->phy->lock, flags);
-		} else if (eth->phy->phy[i]) {
-			phy_disconnect(eth->phy->phy[i]);
-		} else if (eth->mii_bus) {
-			struct phy_device *phy =
-				mdiobus_get_phy(eth->mii_bus, i);
-
-			if (phy)
-				phy_detach(phy);
-		}
-}
-
-static void mtk_phy_start(struct mtk_mac *mac)
-{
-	struct mtk_eth *eth = mac->hw;
-	unsigned long flags;
-	int i;
-
-	for (i = 0; i < 8; i++) {
-		if (eth->phy->phy_fixed[i]) {
-			spin_lock_irqsave(&eth->phy->lock, flags);
-			eth->link[i] = 1;
-			if (eth->soc->mdio_adjust_link)
-				eth->soc->mdio_adjust_link(eth, i);
-			spin_unlock_irqrestore(&eth->phy->lock, flags);
-		} else if (eth->phy->phy[i]) {
-			phy_start(eth->phy->phy[i]);
-		}
-	}
-}
-
-static void mtk_phy_stop(struct mtk_mac *mac)
-{
-	struct mtk_eth *eth = mac->hw;
-	unsigned long flags;
-	int i;
-
-	for (i = 0; i < 8; i++)
-		if (eth->phy->phy_fixed[i]) {
-			spin_lock_irqsave(&eth->phy->lock, flags);
-			eth->link[i] = 0;
-			if (eth->soc->mdio_adjust_link)
-				eth->soc->mdio_adjust_link(eth, i);
-			spin_unlock_irqrestore(&eth->phy->lock, flags);
-		} else if (eth->phy->phy[i]) {
-			phy_stop(eth->phy->phy[i]);
-		}
-}
-
-static struct mtk_phy phy_ralink = {
-	.connect = mtk_phy_connect,
-	.disconnect = mtk_phy_disconnect,
-	.start = mtk_phy_start,
-	.stop = mtk_phy_stop,
-};
-
-int mtk_mdio_init(struct mtk_eth *eth)
-{
-	struct device_node *mii_np;
-	int err;
-
-	if (!eth->soc->mdio_read || !eth->soc->mdio_write)
-		return 0;
-
-	spin_lock_init(&phy_ralink.lock);
-	eth->phy = &phy_ralink;
-
-	mii_np = of_get_child_by_name(eth->dev->of_node, "mdio-bus");
-	if (!mii_np) {
-		dev_err(eth->dev, "no %s child node found", "mdio-bus");
-		return -ENODEV;
-	}
-
-	if (!of_device_is_available(mii_np)) {
-		err = 0;
-		goto err_put_node;
-	}
-
-	eth->mii_bus = mdiobus_alloc();
-	if (!eth->mii_bus) {
-		err = -ENOMEM;
-		goto err_put_node;
-	}
-
-	eth->mii_bus->name = "mdio";
-	eth->mii_bus->read = eth->soc->mdio_read;
-	eth->mii_bus->write = eth->soc->mdio_write;
-	eth->mii_bus->reset = mtk_mdio_reset;
-	eth->mii_bus->priv = eth;
-	eth->mii_bus->parent = eth->dev;
-
-	snprintf(eth->mii_bus->id, MII_BUS_ID_SIZE, "%pOFn", mii_np);
-	err = of_mdiobus_register(eth->mii_bus, mii_np);
-	if (err)
-		goto err_free_bus;
-
-	return 0;
-
-err_free_bus:
-	kfree(eth->mii_bus);
-err_put_node:
-	of_node_put(mii_np);
-	eth->mii_bus = NULL;
-	return err;
-}
-
-void mtk_mdio_cleanup(struct mtk_eth *eth)
-{
-	if (!eth->mii_bus)
-		return;
-
-	mdiobus_unregister(eth->mii_bus);
-	of_node_put(eth->mii_bus->dev.of_node);
-	kfree(eth->mii_bus);
-}

drivers/staging/mt7621-eth/mdio.h

-/*   This program is free software; you can redistribute it and/or modify
- *   it under the terms of the GNU General Public License as published by
- *   the Free Software Foundation; version 2 of the License
- *
- *   This program is distributed in the hope that it will be useful,
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *   GNU General Public License for more details.
- *
- *   Copyright (C) 2009-2016 John Crispin <blogic@openwrt.org>
- *   Copyright (C) 2009-2016 Felix Fietkau <nbd@openwrt.org>
- *   Copyright (C) 2013-2016 Michael Lee <igvtee@gmail.com>
- */
-
-#ifndef _RALINK_MDIO_H__
-#define _RALINK_MDIO_H__
-
-#ifdef CONFIG_NET_MEDIATEK_MDIO
-int mtk_mdio_init(struct mtk_eth *eth);
-void mtk_mdio_cleanup(struct mtk_eth *eth);
-int mtk_connect_phy_node(struct mtk_eth *eth, struct mtk_mac *mac,
-			 struct device_node *phy_node);
-#else
-static inline int mtk_mdio_init(struct mtk_eth *eth) { return 0; }
-static inline void mtk_mdio_cleanup(struct mtk_eth *eth) {}
-#endif
-#endif

drivers/staging/mt7621-eth/mdio_mt7620.c

-/*   This program is free software; you can redistribute it and/or modify
- *   it under the terms of the GNU General Public License as published by
- *   the Free Software Foundation; version 2 of the License
- *
- *   This program is distributed in the hope that it will be useful,
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *   GNU General Public License for more details.
- *
- *   Copyright (C) 2009-2016 John Crispin <blogic@openwrt.org>
- *   Copyright (C) 2009-2016 Felix Fietkau <nbd@openwrt.org>
- *   Copyright (C) 2013-2016 Michael Lee <igvtee@gmail.com>
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-
-#include "mtk_eth_soc.h"
-#include "gsw_mt7620.h"
-#include "mdio.h"
-
-static int mt7620_mii_busy_wait(struct mt7620_gsw *gsw)
-{
-	unsigned long t_start = jiffies;
-
-	while (1) {
-		if (!(mtk_switch_r32(gsw,
-				     gsw->piac_offset + MT7620_GSW_REG_PIAC) &
-				     GSW_MDIO_ACCESS))
-			return 0;
-		if (time_after(jiffies, t_start + GSW_REG_PHY_TIMEOUT))
-			break;
-	}
-
-	dev_err(gsw->dev, "mdio: MDIO timeout\n");
-	return -1;
-}
-
-u32 _mt7620_mii_write(struct mt7620_gsw *gsw, u32 phy_addr,
-		      u32 phy_register, u32 write_data)
-{
-	if (mt7620_mii_busy_wait(gsw))
-		return -1;
-
-	write_data &= 0xffff;
-
-	mtk_switch_w32(gsw, GSW_MDIO_ACCESS | GSW_MDIO_START | GSW_MDIO_WRITE |
-		(phy_register << GSW_MDIO_REG_SHIFT) |
-		(phy_addr << GSW_MDIO_ADDR_SHIFT) | write_data,
-		MT7620_GSW_REG_PIAC);
-
-	if (mt7620_mii_busy_wait(gsw))
-		return -1;
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(_mt7620_mii_write);
-
-u32 _mt7620_mii_read(struct mt7620_gsw *gsw, int phy_addr, int phy_reg)
-{
-	u32 d;
-
-	if (mt7620_mii_busy_wait(gsw))
-		return 0xffff;
-
-	mtk_switch_w32(gsw, GSW_MDIO_ACCESS | GSW_MDIO_START | GSW_MDIO_READ |
-		(phy_reg << GSW_MDIO_REG_SHIFT) |
-		(phy_addr << GSW_MDIO_ADDR_SHIFT),
-		MT7620_GSW_REG_PIAC);
-
-	if (mt7620_mii_busy_wait(gsw))
-		return 0xffff;
-
-	d = mtk_switch_r32(gsw, MT7620_GSW_REG_PIAC) & 0xffff;
-
-	return d;
-}
-EXPORT_SYMBOL_GPL(_mt7620_mii_read);
-
-int mt7620_mdio_write(struct mii_bus *bus, int phy_addr, int phy_reg, u16 val)
-{
-	struct mtk_eth *eth = bus->priv;
-	struct mt7620_gsw *gsw = (struct mt7620_gsw *)eth->sw_priv;
-
-	return _mt7620_mii_write(gsw, phy_addr, phy_reg, val);
-}
-
-int mt7620_mdio_read(struct mii_bus *bus, int phy_addr, int phy_reg)
-{
-	struct mtk_eth *eth = bus->priv;
-	struct mt7620_gsw *gsw = (struct mt7620_gsw *)eth->sw_priv;
-
-	return _mt7620_mii_read(gsw, phy_addr, phy_reg);
-}
-
-void mt7530_mdio_w32(struct mt7620_gsw *gsw, u32 reg, u32 val)
-{
-	_mt7620_mii_write(gsw, 0x1f, 0x1f, (reg >> 6) & 0x3ff);
-	_mt7620_mii_write(gsw, 0x1f, (reg >> 2) & 0xf,  val & 0xffff);
-	_mt7620_mii_write(gsw, 0x1f, 0x10, val >> 16);
-}
-EXPORT_SYMBOL_GPL(mt7530_mdio_w32);
-
-u32 mt7530_mdio_r32(struct mt7620_gsw *gsw, u32 reg)
-{
-	u16 high, low;
-
-	_mt7620_mii_write(gsw, 0x1f, 0x1f, (reg >> 6) & 0x3ff);
-	low = _mt7620_mii_read(gsw, 0x1f, (reg >> 2) & 0xf);
-	high = _mt7620_mii_read(gsw, 0x1f, 0x10);
-
-	return (high << 16) | (low & 0xffff);
-}
-EXPORT_SYMBOL_GPL(mt7530_mdio_r32);
-
-void mt7530_mdio_m32(struct mt7620_gsw *gsw, u32 mask, u32 set, u32 reg)
-{
-	u32 val = mt7530_mdio_r32(gsw, reg);
-
-	val &= ~mask;
-	val |= set;
-	mt7530_mdio_w32(gsw, reg, val);
-}
-EXPORT_SYMBOL_GPL(mt7530_mdio_m32);
-
-static unsigned char *mtk_speed_str(int speed)
-{
-	switch (speed) {
-	case 2:
-	case SPEED_1000:
-		return "1000";
-	case 1:
-	case SPEED_100:
-		return "100";
-	case 0:
-	case SPEED_10:
-		return "10";
-	}
-
-	return "? ";
-}
-
-int mt7620_has_carrier(struct mtk_eth *eth)
-{
-	struct mt7620_gsw *gsw = (struct mt7620_gsw *)eth->sw_priv;
-	int i;
-
-	for (i = 0; i < GSW_PORT6; i++)
-		if (mt7530_mdio_r32(gsw, GSW_REG_PORT_STATUS(i)) & 0x1)
-			return 1;
-	return 0;
-}
-
-void mt7620_print_link_state(struct mtk_eth *eth, int port, int link,
-			     int speed, int duplex)
-{
-	struct mt7620_gsw *gsw = eth->sw_priv;
-
-	if (link)
-		dev_info(gsw->dev, "port %d link up (%sMbps/%s duplex)\n",
-			 port, mtk_speed_str(speed),
-			 (duplex) ? "Full" : "Half");
-	else
-		dev_info(gsw->dev, "port %d link down\n", port);
-}
-
-void mt7620_mdio_link_adjust(struct mtk_eth *eth, int port)
-{
-	mt7620_print_link_state(eth, port, eth->link[port],
-				eth->phy->speed[port],
-				(eth->phy->duplex[port] == DUPLEX_FULL));
-}

drivers/staging/mt7621-eth/mtk_eth_soc.c

-/*   This program is free software; you can redistribute it and/or modify
- *   it under the terms of the GNU General Public License as published by
- *   the Free Software Foundation; version 2 of the License
- *
- *   This program is distributed in the hope that it will be useful,
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *   GNU General Public License for more details.
- *
- *   Copyright (C) 2009-2016 John Crispin <blogic@openwrt.org>
- *   Copyright (C) 2009-2016 Felix Fietkau <nbd@openwrt.org>
- *   Copyright (C) 2013-2016 Michael Lee <igvtee@gmail.com>
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/dma-mapping.h>
-#include <linux/init.h>
-#include <linux/skbuff.h>
-#include <linux/etherdevice.h>
-#include <linux/ethtool.h>
-#include <linux/platform_device.h>
-#include <linux/of_device.h>
-#include <linux/mfd/syscon.h>
-#include <linux/clk.h>
-#include <linux/of_net.h>
-#include <linux/of_mdio.h>
-#include <linux/if_vlan.h>
-#include <linux/reset.h>
-#include <linux/tcp.h>
-#include <linux/io.h>
-#include <linux/bug.h>
-#include <linux/regmap.h>
-
-#include "mtk_eth_soc.h"
-#include "mdio.h"
-#include "ethtool.h"
-
-#define	MAX_RX_LENGTH		1536
-#define MTK_RX_ETH_HLEN		(VLAN_ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN)
-#define MTK_RX_HLEN		(NET_SKB_PAD + MTK_RX_ETH_HLEN + NET_IP_ALIGN)
-#define DMA_DUMMY_DESC		0xffffffff
-#define MTK_DEFAULT_MSG_ENABLE \
-		(NETIF_MSG_DRV | \
-		NETIF_MSG_PROBE | \
-		NETIF_MSG_LINK | \
-		NETIF_MSG_TIMER | \
-		NETIF_MSG_IFDOWN | \
-		NETIF_MSG_IFUP | \
-		NETIF_MSG_RX_ERR | \
-		NETIF_MSG_TX_ERR)
-
-#define TX_DMA_DESP2_DEF	(TX_DMA_LS0 | TX_DMA_DONE)
-#define NEXT_TX_DESP_IDX(X)	(((X) + 1) & (ring->tx_ring_size - 1))
-#define NEXT_RX_DESP_IDX(X)	(((X) + 1) & (ring->rx_ring_size - 1))
-
-#define SYSC_REG_RSTCTRL	0x34
-
-static int mtk_msg_level = -1;
-module_param_named(msg_level, mtk_msg_level, int, 0);
-MODULE_PARM_DESC(msg_level, "Message level (-1=defaults,0=none,...,16=all)");
-
-static const u16 mtk_reg_table_default[MTK_REG_COUNT] = {
-	[MTK_REG_PDMA_GLO_CFG] = MTK_PDMA_GLO_CFG,
-	[MTK_REG_PDMA_RST_CFG] = MTK_PDMA_RST_CFG,
-	[MTK_REG_DLY_INT_CFG] = MTK_DLY_INT_CFG,
-	[MTK_REG_TX_BASE_PTR0] = MTK_TX_BASE_PTR0,
-	[MTK_REG_TX_MAX_CNT0] = MTK_TX_MAX_CNT0,
-	[MTK_REG_TX_CTX_IDX0] = MTK_TX_CTX_IDX0,
-	[MTK_REG_TX_DTX_IDX0] = MTK_TX_DTX_IDX0,
-	[MTK_REG_RX_BASE_PTR0] = MTK_RX_BASE_PTR0,
-	[MTK_REG_RX_MAX_CNT0] = MTK_RX_MAX_CNT0,
-	[MTK_REG_RX_CALC_IDX0] = MTK_RX_CALC_IDX0,
-	[MTK_REG_RX_DRX_IDX0] = MTK_RX_DRX_IDX0,
-	[MTK_REG_MTK_INT_ENABLE] = MTK_INT_ENABLE,
-	[MTK_REG_MTK_INT_STATUS] = MTK_INT_STATUS,
-	[MTK_REG_MTK_DMA_VID_BASE] = MTK_DMA_VID0,
-	[MTK_REG_MTK_COUNTER_BASE] = MTK_GDMA1_TX_GBCNT,
-	[MTK_REG_MTK_RST_GL] = MTK_RST_GL,
-};
-
-static const u16 *mtk_reg_table = mtk_reg_table_default;
-
-void mtk_w32(struct mtk_eth *eth, u32 val, unsigned int reg)
-{
-	__raw_writel(val, eth->base + reg);
-}
-
-u32 mtk_r32(struct mtk_eth *eth, unsigned int reg)
-{
-	return __raw_readl(eth->base + reg);
-}
-
-static void mtk_reg_w32(struct mtk_eth *eth, u32 val, enum mtk_reg reg)
-{
-	mtk_w32(eth, val, mtk_reg_table[reg]);
-}
-
-static u32 mtk_reg_r32(struct mtk_eth *eth, enum mtk_reg reg)
-{
-	return mtk_r32(eth, mtk_reg_table[reg]);
-}
-
-/* these bits are also exposed via the reset-controller API. however the switch
- * and FE need to be brought out of reset in the exakt same moemtn and the
- * reset-controller api does not provide this feature yet. Do the reset manually
- * until we fixed the reset-controller api to be able to do this
- */
-void mtk_reset(struct mtk_eth *eth, u32 reset_bits)
-{
-	u32 val;
-
-	regmap_read(eth->ethsys, SYSC_REG_RSTCTRL, &val);
-	val |= reset_bits;
-	regmap_write(eth->ethsys, SYSC_REG_RSTCTRL, val);
-	usleep_range(10, 20);
-	val &= ~reset_bits;
-	regmap_write(eth->ethsys, SYSC_REG_RSTCTRL, val);
-	usleep_range(10, 20);
-}
-EXPORT_SYMBOL(mtk_reset);
-
-static inline void mtk_irq_ack(struct mtk_eth *eth, u32 mask)
-{
-	if (eth->soc->dma_type & MTK_PDMA)
-		mtk_reg_w32(eth, mask, MTK_REG_MTK_INT_STATUS);
-	if (eth->soc->dma_type & MTK_QDMA)
-		mtk_w32(eth, mask, MTK_QMTK_INT_STATUS);
-}
-
-static inline u32 mtk_irq_pending(struct mtk_eth *eth)
-{
-	u32 status = 0;
-
-	if (eth->soc->dma_type & MTK_PDMA)
-		status |= mtk_reg_r32(eth, MTK_REG_MTK_INT_STATUS);
-	if (eth->soc->dma_type & MTK_QDMA)
-		status |= mtk_r32(eth, MTK_QMTK_INT_STATUS);
-
-	return status;
-}
-
-static void mtk_irq_ack_status(struct mtk_eth *eth, u32 mask)
-{
-	u32 status_reg = MTK_REG_MTK_INT_STATUS;
-
-	if (mtk_reg_table[MTK_REG_MTK_INT_STATUS2])
-		status_reg = MTK_REG_MTK_INT_STATUS2;
-
-	mtk_reg_w32(eth, mask, status_reg);
-}
-
-static u32 mtk_irq_pending_status(struct mtk_eth *eth)
-{
-	u32 status_reg = MTK_REG_MTK_INT_STATUS;
-
-	if (mtk_reg_table[MTK_REG_MTK_INT_STATUS2])
-		status_reg = MTK_REG_MTK_INT_STATUS2;
-
-	return mtk_reg_r32(eth, status_reg);
-}
-
-static inline void mtk_irq_disable(struct mtk_eth *eth, u32 mask)
-{
-	u32 val;
-
-	if (eth->soc->dma_type & MTK_PDMA) {
-		val = mtk_reg_r32(eth, MTK_REG_MTK_INT_ENABLE);
-		mtk_reg_w32(eth, val & ~mask, MTK_REG_MTK_INT_ENABLE);
-		/* flush write */
-		mtk_reg_r32(eth, MTK_REG_MTK_INT_ENABLE);
-	}
-	if (eth->soc->dma_type & MTK_QDMA) {
-		val = mtk_r32(eth, MTK_QMTK_INT_ENABLE);
-		mtk_w32(eth, val & ~mask, MTK_QMTK_INT_ENABLE);
-		/* flush write */
-		mtk_r32(eth, MTK_QMTK_INT_ENABLE);
-	}
-}
-
-static inline void mtk_irq_enable(struct mtk_eth *eth, u32 mask)
-{
-	u32 val;
-
-	if (eth->soc->dma_type & MTK_PDMA) {
-		val = mtk_reg_r32(eth, MTK_REG_MTK_INT_ENABLE);
-		mtk_reg_w32(eth, val | mask, MTK_REG_MTK_INT_ENABLE);
-		/* flush write */
-		mtk_reg_r32(eth, MTK_REG_MTK_INT_ENABLE);
-	}
-	if (eth->soc->dma_type & MTK_QDMA) {
-		val = mtk_r32(eth, MTK_QMTK_INT_ENABLE);
-		mtk_w32(eth, val | mask, MTK_QMTK_INT_ENABLE);
-		/* flush write */
-		mtk_r32(eth, MTK_QMTK_INT_ENABLE);
-	}
-}
-
-static inline u32 mtk_irq_enabled(struct mtk_eth *eth)
-{
-	u32 enabled = 0;
-
-	if (eth->soc->dma_type & MTK_PDMA)
-		enabled |= mtk_reg_r32(eth, MTK_REG_MTK_INT_ENABLE);
-	if (eth->soc->dma_type & MTK_QDMA)
-		enabled |= mtk_r32(eth, MTK_QMTK_INT_ENABLE);
-
-	return enabled;
-}
-
-static inline void mtk_hw_set_macaddr(struct mtk_mac *mac,
-				      unsigned char *macaddr)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&mac->hw->page_lock, flags);
-	mtk_w32(mac->hw, (macaddr[0] << 8) | macaddr[1], MTK_GDMA1_MAC_ADRH);
-	mtk_w32(mac->hw, (macaddr[2] << 24) | (macaddr[3] << 16) |
-		(macaddr[4] << 8) | macaddr[5],
-		MTK_GDMA1_MAC_ADRL);
-	spin_unlock_irqrestore(&mac->hw->page_lock, flags);
-}
-
-static int mtk_set_mac_address(struct net_device *dev, void *p)
-{
-	int ret = eth_mac_addr(dev, p);
-	struct mtk_mac *mac = netdev_priv(dev);
-	struct mtk_eth *eth = mac->hw;
-
-	if (ret)
-		return ret;
-
-	if (eth->soc->set_mac)
-		eth->soc->set_mac(mac, dev->dev_addr);
-	else
-		mtk_hw_set_macaddr(mac, p);
-
-	return 0;
-}
-
-static inline int mtk_max_frag_size(int mtu)
-{
-	/* make sure buf_size will be at least MAX_RX_LENGTH */
-	if (mtu + MTK_RX_ETH_HLEN < MAX_RX_LENGTH)
-		mtu = MAX_RX_LENGTH - MTK_RX_ETH_HLEN;
-
-	return SKB_DATA_ALIGN(MTK_RX_HLEN + mtu) +
-		SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
-}
-
-static inline int mtk_max_buf_size(int frag_size)
-{
-	int buf_size = frag_size - NET_SKB_PAD - NET_IP_ALIGN -
-		       SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
-
-	WARN_ON(buf_size < MAX_RX_LENGTH);
-
-	return buf_size;
-}
-
-static inline void mtk_get_rxd(struct mtk_rx_dma *rxd,
-			       struct mtk_rx_dma *dma_rxd)
-{
-	rxd->rxd1 = READ_ONCE(dma_rxd->rxd1);
-	rxd->rxd2 = READ_ONCE(dma_rxd->rxd2);
-	rxd->rxd3 = READ_ONCE(dma_rxd->rxd3);
-	rxd->rxd4 = READ_ONCE(dma_rxd->rxd4);
-}
-
-static inline void mtk_set_txd_pdma(struct mtk_tx_dma *txd,
-				    struct mtk_tx_dma *dma_txd)
-{
-	WRITE_ONCE(dma_txd->txd1, txd->txd1);
-	WRITE_ONCE(dma_txd->txd3, txd->txd3);
-	WRITE_ONCE(dma_txd->txd4, txd->txd4);
-	/* clean dma done flag last */
-	WRITE_ONCE(dma_txd->txd2, txd->txd2);
-}
-
-static void mtk_clean_rx(struct mtk_eth *eth, struct mtk_rx_ring *ring)
-{
-	int i;
-
-	if (ring->rx_data && ring->rx_dma) {
-		for (i = 0; i < ring->rx_ring_size; i++) {
-			if (!ring->rx_data[i])
-				continue;
-			if (!ring->rx_dma[i].rxd1)
-				continue;
-			dma_unmap_single(eth->dev,
-					 ring->rx_dma[i].rxd1,
-					 ring->rx_buf_size,
-					 DMA_FROM_DEVICE);
-			skb_free_frag(ring->rx_data[i]);
-		}
-		kfree(ring->rx_data);
-		ring->rx_data = NULL;
-	}
-
-	if (ring->rx_dma) {
-		dma_free_coherent(eth->dev,
-				  ring->rx_ring_size * sizeof(*ring->rx_dma),
-				  ring->rx_dma,
-				  ring->rx_phys);
-		ring->rx_dma = NULL;
-	}
-}
-
-static int mtk_dma_rx_alloc(struct mtk_eth *eth, struct mtk_rx_ring *ring)
-{
-	int i, pad = 0;
-
-	ring->frag_size = mtk_max_frag_size(ETH_DATA_LEN);
-	ring->rx_buf_size = mtk_max_buf_size(ring->frag_size);
-	ring->rx_ring_size = eth->soc->dma_ring_size;
-	ring->rx_data = kcalloc(ring->rx_ring_size, sizeof(*ring->rx_data),
-				GFP_KERNEL);
-	if (!ring->rx_data)
-		goto no_rx_mem;
-
-	for (i = 0; i < ring->rx_ring_size; i++) {
-		ring->rx_data[i] = netdev_alloc_frag(ring->frag_size);
-		if (!ring->rx_data[i])
-			goto no_rx_mem;
-	}
-
-	ring->rx_dma =
-		dma_alloc_coherent(eth->dev,
-				   ring->rx_ring_size * sizeof(*ring->rx_dma),
-				   &ring->rx_phys, GFP_ATOMIC | __GFP_ZERO);
-	if (!ring->rx_dma)
-		goto no_rx_mem;
-
-	if (!eth->soc->rx_2b_offset)
-		pad = NET_IP_ALIGN;
-
-	for (i = 0; i < ring->rx_ring_size; i++) {
-		dma_addr_t dma_addr = dma_map_single(eth->dev,
-				ring->rx_data[i] + NET_SKB_PAD + pad,
-				ring->rx_buf_size,
-				DMA_FROM_DEVICE);
-		if (unlikely(dma_mapping_error(eth->dev, dma_addr)))
-			goto no_rx_mem;
-		ring->rx_dma[i].rxd1 = (unsigned int)dma_addr;
-
-		if (eth->soc->rx_sg_dma)
-			ring->rx_dma[i].rxd2 = RX_DMA_PLEN0(ring->rx_buf_size);
-		else
-			ring->rx_dma[i].rxd2 = RX_DMA_LSO;
-	}
-	ring->rx_calc_idx = ring->rx_ring_size - 1;
-	/* make sure that all changes to the dma ring are flushed before we
-	 * continue
-	 */
-	wmb();
-
-	return 0;
-
-no_rx_mem:
-	return -ENOMEM;
-}
-
-static void mtk_txd_unmap(struct device *dev, struct mtk_tx_buf *tx_buf)
-{
-	if (tx_buf->flags & MTK_TX_FLAGS_SINGLE0) {
-		dma_unmap_single(dev,
-				 dma_unmap_addr(tx_buf, dma_addr0),
-				 dma_unmap_len(tx_buf, dma_len0),
-				 DMA_TO_DEVICE);
-	} else if (tx_buf->flags & MTK_TX_FLAGS_PAGE0) {
-		dma_unmap_page(dev,
-			       dma_unmap_addr(tx_buf, dma_addr0),
-			       dma_unmap_len(tx_buf, dma_len0),
-			       DMA_TO_DEVICE);
-	}
-	if (tx_buf->flags & MTK_TX_FLAGS_PAGE1)
-		dma_unmap_page(dev,
-			       dma_unmap_addr(tx_buf, dma_addr1),
-			       dma_unmap_len(tx_buf, dma_len1),
-			       DMA_TO_DEVICE);
-
-	tx_buf->flags = 0;
-	if (tx_buf->skb && (tx_buf->skb != (struct sk_buff *)DMA_DUMMY_DESC))
-		dev_kfree_skb_any(tx_buf->skb);
-	tx_buf->skb = NULL;
-}
-
-static void mtk_pdma_tx_clean(struct mtk_eth *eth)
-{
-	struct mtk_tx_ring *ring = &eth->tx_ring;
-	int i;
-
-	if (ring->tx_buf) {
-		for (i = 0; i < ring->tx_ring_size; i++)
-			mtk_txd_unmap(eth->dev, &ring->tx_buf[i]);
-		kfree(ring->tx_buf);
-		ring->tx_buf = NULL;
-	}
-
-	if (ring->tx_dma) {
-		dma_free_coherent(eth->dev,
-				  ring->tx_ring_size * sizeof(*ring->tx_dma),
-				  ring->tx_dma,
-				  ring->tx_phys);
-		ring->tx_dma = NULL;
-	}
-}
-
-static void mtk_qdma_tx_clean(struct mtk_eth *eth)
-{
-	struct mtk_tx_ring *ring = &eth->tx_ring;
-	int i;
-
-	if (ring->tx_buf) {
-		for (i = 0; i < ring->tx_ring_size; i++)
-			mtk_txd_unmap(eth->dev, &ring->tx_buf[i]);
-		kfree(ring->tx_buf);
-		ring->tx_buf = NULL;
-	}
-
-	if (ring->tx_dma) {
-		dma_free_coherent(eth->dev,
-				  ring->tx_ring_size * sizeof(*ring->tx_dma),
-				  ring->tx_dma,
-				  ring->tx_phys);
-		ring->tx_dma = NULL;
-	}
-}
-
-void mtk_stats_update_mac(struct mtk_mac *mac)
-{
-	struct mtk_hw_stats *hw_stats = mac->hw_stats;
-	unsigned int base = mtk_reg_table[MTK_REG_MTK_COUNTER_BASE];
-	u64 stats;
-
-	base += hw_stats->reg_offset;
-
-	u64_stats_update_begin(&hw_stats->syncp);
-
-	if (mac->hw->soc->new_stats) {
-		hw_stats->rx_bytes += mtk_r32(mac->hw, base);
-		stats =  mtk_r32(mac->hw, base + 0x04);
-		if (stats)
-			hw_stats->rx_bytes += (stats << 32);
-		hw_stats->rx_packets += mtk_r32(mac->hw, base + 0x08);
-		hw_stats->rx_overflow += mtk_r32(mac->hw, base + 0x10);
-		hw_stats->rx_fcs_errors += mtk_r32(mac->hw, base + 0x14);
-		hw_stats->rx_short_errors += mtk_r32(mac->hw, base + 0x18);
-		hw_stats->rx_long_errors += mtk_r32(mac->hw, base + 0x1c);
-		hw_stats->rx_checksum_errors += mtk_r32(mac->hw, base + 0x20);
-		hw_stats->rx_flow_control_packets +=
-						mtk_r32(mac->hw, base + 0x24);
-		hw_stats->tx_skip += mtk_r32(mac->hw, base + 0x28);
-		hw_stats->tx_collisions += mtk_r32(mac->hw, base + 0x2c);
-		hw_stats->tx_bytes += mtk_r32(mac->hw, base + 0x30);
-		stats =  mtk_r32(mac->hw, base + 0x34);
-		if (stats)
-			hw_stats->tx_bytes += (stats << 32);
-		hw_stats->tx_packets += mtk_r32(mac->hw, base + 0x38);
-	} else {
-		hw_stats->tx_bytes += mtk_r32(mac->hw, base);
-		hw_stats->tx_packets += mtk_r32(mac->hw, base + 0x04);
-		hw_stats->tx_skip += mtk_r32(mac->hw, base + 0x08);
-		hw_stats->tx_collisions += mtk_r32(mac->hw, base + 0x0c);
-		hw_stats->rx_bytes += mtk_r32(mac->hw, base + 0x20);
-		hw_stats->rx_packets += mtk_r32(mac->hw, base + 0x24);
-		hw_stats->rx_overflow += mtk_r32(mac->hw, base + 0x28);
-		hw_stats->rx_fcs_errors += mtk_r32(mac->hw, base + 0x2c);
-		hw_stats->rx_short_errors += mtk_r32(mac->hw, base + 0x30);
-		hw_stats->rx_long_errors += mtk_r32(mac->hw, base + 0x34);
-		hw_stats->rx_checksum_errors += mtk_r32(mac->hw, base + 0x38);
-		hw_stats->rx_flow_control_packets +=
-						mtk_r32(mac->hw, base + 0x3c);
-	}
-
-	u64_stats_update_end(&hw_stats->syncp);
-}
-
-static void mtk_get_stats64(struct net_device *dev,
-			    struct rtnl_link_stats64 *storage)
-{
-	struct mtk_mac *mac = netdev_priv(dev);
-	struct mtk_hw_stats *hw_stats = mac->hw_stats;
-	unsigned int base = mtk_reg_table[MTK_REG_MTK_COUNTER_BASE];
-	unsigned int start;
-
-	if (!base) {
-		netdev_stats_to_stats64(storage, &dev->stats);
-		return;
-	}
-
-	if (netif_running(dev) && netif_device_present(dev)) {
-		if (spin_trylock(&hw_stats->stats_lock)) {
-			mtk_stats_update_mac(mac);
-			spin_unlock(&hw_stats->stats_lock);
-		}
-	}
-
-	do {
-		start = u64_stats_fetch_begin_irq(&hw_stats->syncp);
-		storage->rx_packets = hw_stats->rx_packets;
-		storage->tx_packets = hw_stats->tx_packets;
-		storage->rx_bytes = hw_stats->rx_bytes;
-		storage->tx_bytes = hw_stats->tx_bytes;
-		storage->collisions = hw_stats->tx_collisions;
-		storage->rx_length_errors = hw_stats->rx_short_errors +
-			hw_stats->rx_long_errors;
-		storage->rx_over_errors = hw_stats->rx_overflow;
-		storage->rx_crc_errors = hw_stats->rx_fcs_errors;
-		storage->rx_errors = hw_stats->rx_checksum_errors;
-		storage->tx_aborted_errors = hw_stats->tx_skip;
-	} while (u64_stats_fetch_retry_irq(&hw_stats->syncp, start));
-
-	storage->tx_errors = dev->stats.tx_errors;
-	storage->rx_dropped = dev->stats.rx_dropped;
-	storage->tx_dropped = dev->stats.tx_dropped;
-}
-
-static int mtk_vlan_rx_add_vid(struct net_device *dev,
-			       __be16 proto, u16 vid)
-{
-	struct mtk_mac *mac = netdev_priv(dev);
-	struct mtk_eth *eth = mac->hw;
-	u32 idx = (vid & 0xf);
-	u32 vlan_cfg;
-
-	if (!((mtk_reg_table[MTK_REG_MTK_DMA_VID_BASE]) &&
-	      (dev->features & NETIF_F_HW_VLAN_CTAG_TX)))
-		return 0;
-
-	if (test_bit(idx, &eth->vlan_map)) {
-		netdev_warn(dev, "disable tx vlan offload\n");
-		dev->wanted_features &= ~NETIF_F_HW_VLAN_CTAG_TX;
-		netdev_update_features(dev);
-	} else {
-		vlan_cfg = mtk_r32(eth,
-				   mtk_reg_table[MTK_REG_MTK_DMA_VID_BASE] +
-				   ((idx >> 1) << 2));
-		if (idx & 0x1) {
-			vlan_cfg &= 0xffff;
-			vlan_cfg |= (vid << 16);
-		} else {
-			vlan_cfg &= 0xffff0000;
-			vlan_cfg |= vid;
-		}
-		mtk_w32(eth,
-			vlan_cfg, mtk_reg_table[MTK_REG_MTK_DMA_VID_BASE] +
-			((idx >> 1) << 2));
-		set_bit(idx, &eth->vlan_map);
-	}
-
-	return 0;
-}
-
-static int mtk_vlan_rx_kill_vid(struct net_device *dev,
-				__be16 proto, u16 vid)
-{
-	struct mtk_mac *mac = netdev_priv(dev);
-	struct mtk_eth *eth = mac->hw;
-	u32 idx = (vid & 0xf);
-
-	if (!((mtk_reg_table[MTK_REG_MTK_DMA_VID_BASE]) &&
-	      (dev->features & NETIF_F_HW_VLAN_CTAG_TX)))
-		return 0;
-
-	clear_bit(idx, &eth->vlan_map);
-
-	return 0;
-}
-
-static inline u32 mtk_pdma_empty_txd(struct mtk_tx_ring *ring)
-{
-	barrier();
-	return (u32)(ring->tx_ring_size -
-		     ((ring->tx_next_idx - ring->tx_free_idx) &
-		      (ring->tx_ring_size - 1)));
-}
-
-static int mtk_skb_padto(struct sk_buff *skb, struct mtk_eth *eth)
-{
-	unsigned int len;
-	int ret;
-
-	if (unlikely(skb->len >= VLAN_ETH_ZLEN))
-		return 0;
-
-	if (eth->soc->padding_64b && !eth->soc->padding_bug)
-		return 0;
-
-	if (skb_vlan_tag_present(skb))
-		len = ETH_ZLEN;
-	else if (skb->protocol == cpu_to_be16(ETH_P_8021Q))
-		len = VLAN_ETH_ZLEN;
-	else if (!eth->soc->padding_64b)
-		len = ETH_ZLEN;
-	else
-		return 0;
-
-	if (skb->len >= len)
-		return 0;
-
-	ret = skb_pad(skb, len - skb->len);
-	if (ret < 0)
-		return ret;
-	skb->len = len;
-	skb_set_tail_pointer(skb, len);
-
-	return ret;
-}
-
-static int mtk_pdma_tx_map(struct sk_buff *skb, struct net_device *dev,
-			   int tx_num, struct mtk_tx_ring *ring, bool gso)
-{
-	struct mtk_mac *mac = netdev_priv(dev);
-	struct mtk_eth *eth = mac->hw;
-	struct skb_frag_struct *frag;
-	struct mtk_tx_dma txd, *ptxd;
-	struct mtk_tx_buf *tx_buf;
-	int i, j, k, frag_size, frag_map_size, offset;
-	dma_addr_t mapped_addr;
-	unsigned int nr_frags;
-	u32 def_txd4;
-
-	if (mtk_skb_padto(skb, eth)) {
-		netif_warn(eth, tx_err, dev, "tx padding failed!\n");
-		return -1;
-	}
-
-	tx_buf = &ring->tx_buf[ring->tx_next_idx];
-	memset(tx_buf, 0, sizeof(*tx_buf));
-	memset(&txd, 0, sizeof(txd));
-	nr_frags = skb_shinfo(skb)->nr_frags;
-
-	/* init tx descriptor */
-	def_txd4 = eth->soc->txd4;
-	txd.txd4 = def_txd4;
-
-	if (eth->soc->mac_count > 1)
-		txd.txd4 |= (mac->id + 1) << TX_DMA_FPORT_SHIFT;
-
-	if (gso)
-		txd.txd4 |= TX_DMA_TSO;
-
-	/* TX Checksum offload */
-	if (skb->ip_summed == CHECKSUM_PARTIAL)
-		txd.txd4 |= TX_DMA_CHKSUM;
-
-	/* VLAN header offload */
-	if (skb_vlan_tag_present(skb)) {
-		u16 tag = skb_vlan_tag_get(skb);
-
-		txd.txd4 |= TX_DMA_INS_VLAN |
-			((tag >> VLAN_PRIO_SHIFT) << 4) |
-			(tag & 0xF);
-	}
-
-	mapped_addr = dma_map_single(&dev->dev, skb->data,
-				     skb_headlen(skb), DMA_TO_DEVICE);
-	if (unlikely(dma_mapping_error(&dev->dev, mapped_addr)))
-		return -1;
-
-	txd.txd1 = mapped_addr;
-	txd.txd2 = TX_DMA_PLEN0(skb_headlen(skb));
-
-	tx_buf->flags |= MTK_TX_FLAGS_SINGLE0;
-	dma_unmap_addr_set(tx_buf, dma_addr0, mapped_addr);
-	dma_unmap_len_set(tx_buf, dma_len0, skb_headlen(skb));
-
-	/* TX SG offload */
-	j = ring->tx_next_idx;
-	k = 0;
-	for (i = 0; i < nr_frags; i++) {
-		offset = 0;
-		frag = &skb_shinfo(skb)->frags[i];
-		frag_size = skb_frag_size(frag);
-
-		while (frag_size > 0) {
-			frag_map_size = min(frag_size, TX_DMA_BUF_LEN);
-			mapped_addr = skb_frag_dma_map(&dev->dev, frag, offset,
-						       frag_map_size,
-						       DMA_TO_DEVICE);
-			if (unlikely(dma_mapping_error(&dev->dev, mapped_addr)))
-				goto err_dma;
-
-			if (k & 0x1) {
-				j = NEXT_TX_DESP_IDX(j);
-				txd.txd1 = mapped_addr;
-				txd.txd2 = TX_DMA_PLEN0(frag_map_size);
-				txd.txd4 = def_txd4;
-
-				tx_buf = &ring->tx_buf[j];
-				memset(tx_buf, 0, sizeof(*tx_buf));
-
-				tx_buf->flags |= MTK_TX_FLAGS_PAGE0;
-				dma_unmap_addr_set(tx_buf, dma_addr0,
-						   mapped_addr);
-				dma_unmap_len_set(tx_buf, dma_len0,
-						  frag_map_size);
-			} else {
-				txd.txd3 = mapped_addr;
-				txd.txd2 |= TX_DMA_PLEN1(frag_map_size);
-
-				tx_buf->skb = (struct sk_buff *)DMA_DUMMY_DESC;
-				tx_buf->flags |= MTK_TX_FLAGS_PAGE1;
-				dma_unmap_addr_set(tx_buf, dma_addr1,
-						   mapped_addr);
-				dma_unmap_len_set(tx_buf, dma_len1,
-						  frag_map_size);
-
-				if (!((i == (nr_frags - 1)) &&
-				      (frag_map_size == frag_size))) {
-					mtk_set_txd_pdma(&txd,
-							 &ring->tx_dma[j]);
-					memset(&txd, 0, sizeof(txd));
-				}
-			}
-			frag_size -= frag_map_size;
-			offset += frag_map_size;
-			k++;
-		}
-	}
-
-	/* set last segment */
-	if (k & 0x1)
-		txd.txd2 |= TX_DMA_LS1;
-	else
-		txd.txd2 |= TX_DMA_LS0;
-	mtk_set_txd_pdma(&txd, &ring->tx_dma[j]);
-
-	/* store skb to cleanup */
-	tx_buf->skb = skb;
-
-	netdev_sent_queue(dev, skb->len);
-	skb_tx_timestamp(skb);
-
-	ring->tx_next_idx = NEXT_TX_DESP_IDX(j);
-	/* make sure that all changes to the dma ring are flushed before we
-	 * continue
-	 */
-	wmb();
-	atomic_set(&ring->tx_free_count, mtk_pdma_empty_txd(ring));
-
-	if (netif_xmit_stopped(netdev_get_tx_queue(dev, 0)) || !skb->xmit_more)
-		mtk_reg_w32(eth, ring->tx_next_idx, MTK_REG_TX_CTX_IDX0);
-
-	return 0;
-
-err_dma:
-	j = ring->tx_next_idx;
-	for (i = 0; i < tx_num; i++) {
-		ptxd = &ring->tx_dma[j];
-		tx_buf = &ring->tx_buf[j];
-
-		/* unmap dma */
-		mtk_txd_unmap(&dev->dev, tx_buf);
-
-		ptxd->txd2 = TX_DMA_DESP2_DEF;
-		j = NEXT_TX_DESP_IDX(j);
-	}
-	/* make sure that all changes to the dma ring are flushed before we
-	 * continue
-	 */
-	wmb();
-	return -1;
-}
-
-/* the qdma core needs scratch memory to be setup */
-static int mtk_init_fq_dma(struct mtk_eth *eth)
-{
-	dma_addr_t dma_addr, phy_ring_head, phy_ring_tail;
-	int cnt = eth->soc->dma_ring_size;
-	int i;
-
-	eth->scratch_ring = dma_alloc_coherent(eth->dev,
-					       cnt * sizeof(struct mtk_tx_dma),
-					       &phy_ring_head,
-					       GFP_ATOMIC | __GFP_ZERO);
-	if (unlikely(!eth->scratch_ring))
-		return -ENOMEM;
-
-	eth->scratch_head = kcalloc(cnt, QDMA_PAGE_SIZE,
-				    GFP_KERNEL);
-	dma_addr = dma_map_single(eth->dev,
-				  eth->scratch_head, cnt * QDMA_PAGE_SIZE,
-				  DMA_FROM_DEVICE);
-	if (unlikely(dma_mapping_error(eth->dev, dma_addr)))
-		return -ENOMEM;
-
-	memset(eth->scratch_ring, 0x0, sizeof(struct mtk_tx_dma) * cnt);
-	phy_ring_tail = phy_ring_head + (sizeof(struct mtk_tx_dma) * (cnt - 1));
-
-	for (i = 0; i < cnt; i++) {
-		eth->scratch_ring[i].txd1 = (dma_addr + (i * QDMA_PAGE_SIZE));
-		if (i < cnt - 1)
-			eth->scratch_ring[i].txd2 = (phy_ring_head +
-				((i + 1) * sizeof(struct mtk_tx_dma)));
-		eth->scratch_ring[i].txd3 = TX_QDMA_SDL(QDMA_PAGE_SIZE);
-	}
-
-	mtk_w32(eth, phy_ring_head, MTK_QDMA_FQ_HEAD);
-	mtk_w32(eth, phy_ring_tail, MTK_QDMA_FQ_TAIL);
-	mtk_w32(eth, (cnt << 16) | cnt, MTK_QDMA_FQ_CNT);
-	mtk_w32(eth, QDMA_PAGE_SIZE << 16, MTK_QDMA_FQ_BLEN);
-
-	return 0;
-}
-
-static void *mtk_qdma_phys_to_virt(struct mtk_tx_ring *ring, u32 desc)
-{
-	void *ret = ring->tx_dma;
-
-	return ret + (desc - ring->tx_phys);
-}
-
-static struct mtk_tx_dma *mtk_tx_next_qdma(struct mtk_tx_ring *ring,
-					   struct mtk_tx_dma *txd)
-{
-	return mtk_qdma_phys_to_virt(ring, txd->txd2);
-}
-
-static struct mtk_tx_buf *mtk_desc_to_tx_buf(struct mtk_tx_ring *ring,
-					     struct mtk_tx_dma *txd)
-{
-	int idx = txd - ring->tx_dma;
-
-	return &ring->tx_buf[idx];
-}
-
-static int mtk_qdma_tx_map(struct sk_buff *skb, struct net_device *dev,
-			   int tx_num, struct mtk_tx_ring *ring, bool gso)
-{
-	struct mtk_mac *mac = netdev_priv(dev);
-	struct mtk_eth *eth = mac->hw;
-	struct mtk_tx_dma *itxd, *txd;
-	struct mtk_tx_buf *tx_buf;
-	dma_addr_t mapped_addr;
-	unsigned int nr_frags;
-	int i, n_desc = 1;
-	u32 txd4 = eth->soc->txd4;
-
-	itxd = ring->tx_next_free;
-	if (itxd == ring->tx_last_free)
-		return -ENOMEM;
-
-	if (eth->soc->mac_count > 1)
-		txd4 |= (mac->id + 1) << TX_DMA_FPORT_SHIFT;
-
-	tx_buf = mtk_desc_to_tx_buf(ring, itxd);
-	memset(tx_buf, 0, sizeof(*tx_buf));
-
-	if (gso)
-		txd4 |= TX_DMA_TSO;
-
-	/* TX Checksum offload */
-	if (skb->ip_summed == CHECKSUM_PARTIAL)
-		txd4 |= TX_DMA_CHKSUM;
-
-	/* VLAN header offload */
-	if (skb_vlan_tag_present(skb))
-		txd4 |= TX_DMA_INS_VLAN_MT7621 | skb_vlan_tag_get(skb);
-
-	mapped_addr = dma_map_single(&dev->dev, skb->data,
-				     skb_headlen(skb), DMA_TO_DEVICE);
-	if (unlikely(dma_mapping_error(&dev->dev, mapped_addr)))
-		return -ENOMEM;
-
-	WRITE_ONCE(itxd->txd1, mapped_addr);
-	tx_buf->flags |= MTK_TX_FLAGS_SINGLE0;
-	dma_unmap_addr_set(tx_buf, dma_addr0, mapped_addr);
-	dma_unmap_len_set(tx_buf, dma_len0, skb_headlen(skb));
-
-	/* TX SG offload */
-	txd = itxd;
-	nr_frags = skb_shinfo(skb)->nr_frags;
-	for (i = 0; i < nr_frags; i++) {
-		struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i];
-		unsigned int offset = 0;
-		int frag_size = skb_frag_size(frag);
-
-		while (frag_size) {
-			bool last_frag = false;
-			unsigned int frag_map_size;
-
-			txd = mtk_tx_next_qdma(ring, txd);
-			if (txd == ring->tx_last_free)
-				goto err_dma;
-
-			n_desc++;
-			frag_map_size = min(frag_size, TX_DMA_BUF_LEN);
-			mapped_addr = skb_frag_dma_map(&dev->dev, frag, offset,
-						       frag_map_size,
-						       DMA_TO_DEVICE);
-			if (unlikely(dma_mapping_error(&dev->dev, mapped_addr)))
-				goto err_dma;
-
-			if (i == nr_frags - 1 &&
-			    (frag_size - frag_map_size) == 0)
-				last_frag = true;
-
-			WRITE_ONCE(txd->txd1, mapped_addr);
-			WRITE_ONCE(txd->txd3, (QDMA_TX_SWC |
-					       TX_DMA_PLEN0(frag_map_size) |
-					       last_frag * TX_DMA_LS0) |
-					       mac->id);
-			WRITE_ONCE(txd->txd4, 0);
-
-			tx_buf->skb = (struct sk_buff *)DMA_DUMMY_DESC;
-			tx_buf = mtk_desc_to_tx_buf(ring, txd);
-			memset(tx_buf, 0, sizeof(*tx_buf));
-
-			tx_buf->flags |= MTK_TX_FLAGS_PAGE0;
-			dma_unmap_addr_set(tx_buf, dma_addr0, mapped_addr);
-			dma_unmap_len_set(tx_buf, dma_len0, frag_map_size);
-			frag_size -= frag_map_size;
-			offset += frag_map_size;
-		}
-	}
-
-	/* store skb to cleanup */
-	tx_buf->skb = skb;
-
-	WRITE_ONCE(itxd->txd4, txd4);
-	WRITE_ONCE(itxd->txd3, (QDMA_TX_SWC | TX_DMA_PLEN0(skb_headlen(skb)) |
-				(!nr_frags * TX_DMA_LS0)));
-
-	netdev_sent_queue(dev, skb->len);
-	skb_tx_timestamp(skb);
-
-	ring->tx_next_free = mtk_tx_next_qdma(ring, txd);
-	atomic_sub(n_desc, &ring->tx_free_count);
-
-	/* make sure that all changes to the dma ring are flushed before we
-	 * continue
-	 */
-	wmb();
-
-	if (netif_xmit_stopped(netdev_get_tx_queue(dev, 0)) || !skb->xmit_more)
-		mtk_w32(eth, txd->txd2, MTK_QTX_CTX_PTR);
-
-	return 0;
-
-err_dma:
-	do {
-		tx_buf = mtk_desc_to_tx_buf(ring, txd);
-
-		/* unmap dma */
-		mtk_txd_unmap(&dev->dev, tx_buf);
-
-		itxd->txd3 = TX_DMA_DESP2_DEF;
-		itxd = mtk_tx_next_qdma(ring, itxd);
-	} while (itxd != txd);
-
-	return -ENOMEM;
-}
-
-static inline int mtk_cal_txd_req(struct sk_buff *skb)
-{
-	int i, nfrags;
-	struct skb_frag_struct *frag;
-
-	nfrags = 1;
-	if (skb_is_gso(skb)) {
-		for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
-			frag = &skb_shinfo(skb)->frags[i];
-			nfrags += DIV_ROUND_UP(frag->size, TX_DMA_BUF_LEN);
-		}
-	} else {
-		nfrags += skb_shinfo(skb)->nr_frags;
-	}
-
-	return DIV_ROUND_UP(nfrags, 2);
-}
-
-static int mtk_start_xmit(struct sk_buff *skb, struct net_device *dev)
-{
-	struct mtk_mac *mac = netdev_priv(dev);
-	struct mtk_eth *eth = mac->hw;
-	struct mtk_tx_ring *ring = &eth->tx_ring;
-	struct net_device_stats *stats = &dev->stats;
-	int tx_num;
-	int len = skb->len;
-	bool gso = false;
-
-	tx_num = mtk_cal_txd_req(skb);
-	if (unlikely(atomic_read(&ring->tx_free_count) <= tx_num)) {
-		netif_stop_queue(dev);
-		netif_err(eth, tx_queued, dev,
-			  "Tx Ring full when queue awake!\n");
-		return NETDEV_TX_BUSY;
-	}
-
-	/* TSO: fill MSS info in tcp checksum field */
-	if (skb_is_gso(skb)) {
-		if (skb_cow_head(skb, 0)) {
-			netif_warn(eth, tx_err, dev,
-				   "GSO expand head fail.\n");
-			goto drop;
-		}
-
-		if (skb_shinfo(skb)->gso_type &
-				(SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
-			gso = true;
-			tcp_hdr(skb)->check = htons(skb_shinfo(skb)->gso_size);
-		}
-	}
-
-	if (ring->tx_map(skb, dev, tx_num, ring, gso) < 0)
-		goto drop;
-
-	stats->tx_packets++;
-	stats->tx_bytes += len;
-
-	if (unlikely(atomic_read(&ring->tx_free_count) <= ring->tx_thresh)) {
-		netif_stop_queue(dev);
-		smp_mb();
-		if (unlikely(atomic_read(&ring->tx_free_count) >
-			     ring->tx_thresh))
-			netif_wake_queue(dev);
-	}
-
-	return NETDEV_TX_OK;
-
-drop:
-	stats->tx_dropped++;
-	dev_kfree_skb(skb);
-	return NETDEV_TX_OK;
-}
-
-static int mtk_poll_rx(struct napi_struct *napi, int budget,
-		       struct mtk_eth *eth, u32 rx_intr)
-{
-	struct mtk_soc_data *soc = eth->soc;
-	struct mtk_rx_ring *ring = &eth->rx_ring[0];
-	int idx = ring->rx_calc_idx;
-	u32 checksum_bit;
-	struct sk_buff *skb;
-	u8 *data, *new_data;
-	struct mtk_rx_dma *rxd, trxd;
-	int done = 0, pad;
-
-	if (eth->soc->hw_features & NETIF_F_RXCSUM)
-		checksum_bit = soc->checksum_bit;
-	else
-		checksum_bit = 0;
-
-	if (eth->soc->rx_2b_offset)
-		pad = 0;
-	else
-		pad = NET_IP_ALIGN;
-
-	while (done < budget) {
-		struct net_device *netdev;
-		unsigned int pktlen;
-		dma_addr_t dma_addr;
-		int mac = 0;
-
-		idx = NEXT_RX_DESP_IDX(idx);
-		rxd = &ring->rx_dma[idx];
-		data = ring->rx_data[idx];
-
-		mtk_get_rxd(&trxd, rxd);
-		if (!(trxd.rxd2 & RX_DMA_DONE))
-			break;
-
-		/* find out which mac the packet come from. values start at 1 */
-		if (eth->soc->mac_count > 1) {
-			mac = (trxd.rxd4 >> RX_DMA_FPORT_SHIFT) &
-			      RX_DMA_FPORT_MASK;
-			mac--;
-			if (mac < 0 || mac >= eth->soc->mac_count)
-				goto release_desc;
-		}
-
-		netdev = eth->netdev[mac];
-
-		/* alloc new buffer */
-		new_data = napi_alloc_frag(ring->frag_size);
-		if (unlikely(!new_data || !netdev)) {
-			netdev->stats.rx_dropped++;
-			goto release_desc;
-		}
-		dma_addr = dma_map_single(&netdev->dev,
-					  new_data + NET_SKB_PAD + pad,
-					  ring->rx_buf_size,
-					  DMA_FROM_DEVICE);
-		if (unlikely(dma_mapping_error(&netdev->dev, dma_addr))) {
-			skb_free_frag(new_data);
-			goto release_desc;
-		}
-
-		/* receive data */
-		skb = build_skb(data, ring->frag_size);
-		if (unlikely(!skb)) {
-			put_page(virt_to_head_page(new_data));
-			goto release_desc;
-		}
-		skb_reserve(skb, NET_SKB_PAD + NET_IP_ALIGN);
-
-		dma_unmap_single(&netdev->dev, trxd.rxd1,
-				 ring->rx_buf_size, DMA_FROM_DEVICE);
-		pktlen = RX_DMA_GET_PLEN0(trxd.rxd2);
-		skb->dev = netdev;
-		skb_put(skb, pktlen);
-		if (trxd.rxd4 & checksum_bit)
-			skb->ip_summed = CHECKSUM_UNNECESSARY;
-		else
-			skb_checksum_none_assert(skb);
-		skb->protocol = eth_type_trans(skb, netdev);
-
-		netdev->stats.rx_packets++;
-		netdev->stats.rx_bytes += pktlen;
-
-		if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX &&
-		    RX_DMA_VID(trxd.rxd3))
-			__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
-					       RX_DMA_VID(trxd.rxd3));
-		napi_gro_receive(napi, skb);
-
-		ring->rx_data[idx] = new_data;
-		rxd->rxd1 = (unsigned int)dma_addr;
-
-release_desc:
-		if (eth->soc->rx_sg_dma)
-			rxd->rxd2 = RX_DMA_PLEN0(ring->rx_buf_size);
-		else
-			rxd->rxd2 = RX_DMA_LSO;
-
-		ring->rx_calc_idx = idx;
-		/* make sure that all changes to the dma ring are flushed before
-		 * we continue
-		 */
-		wmb();
-		if (eth->soc->dma_type == MTK_QDMA)
-			mtk_w32(eth, ring->rx_calc_idx, MTK_QRX_CRX_IDX0);
-		else
-			mtk_reg_w32(eth, ring->rx_calc_idx,
-				    MTK_REG_RX_CALC_IDX0);
-		done++;
-	}
-
-	if (done < budget)
-		mtk_irq_ack(eth, rx_intr);
-
-	return done;
-}
-
-static int mtk_pdma_tx_poll(struct mtk_eth *eth, int budget, bool *tx_again)
-{
-	struct sk_buff *skb;
-	struct mtk_tx_buf *tx_buf;
-	int done = 0;
-	u32 idx, hwidx;
-	struct mtk_tx_ring *ring = &eth->tx_ring;
-	unsigned int bytes = 0;
-
-	idx = ring->tx_free_idx;
-	hwidx = mtk_reg_r32(eth, MTK_REG_TX_DTX_IDX0);
-
-	while ((idx != hwidx) && budget) {
-		tx_buf = &ring->tx_buf[idx];
-		skb = tx_buf->skb;
-
-		if (!skb)
-			break;
-
-		if (skb != (struct sk_buff *)DMA_DUMMY_DESC) {
-			bytes += skb->len;
-			done++;
-			budget--;
-		}
-		mtk_txd_unmap(eth->dev, tx_buf);
-		idx = NEXT_TX_DESP_IDX(idx);
-	}
-	ring->tx_free_idx = idx;
-	atomic_set(&ring->tx_free_count, mtk_pdma_empty_txd(ring));
-
-	/* read hw index again make sure no new tx packet */
-	if (idx != hwidx || idx != mtk_reg_r32(eth, MTK_REG_TX_DTX_IDX0))
-		*tx_again = 1;
-
-	if (done)
-		netdev_completed_queue(*eth->netdev, done, bytes);
-
-	return done;
-}
-
-static int mtk_qdma_tx_poll(struct mtk_eth *eth, int budget, bool *tx_again)
-{
-	struct mtk_tx_ring *ring = &eth->tx_ring;
-	struct mtk_tx_dma *desc;
-	struct sk_buff *skb;
-	struct mtk_tx_buf *tx_buf;
-	int total = 0, done[MTK_MAX_DEVS];
-	unsigned int bytes[MTK_MAX_DEVS];
-	u32 cpu, dma;
-	int i;
-
-	memset(done, 0, sizeof(done));
-	memset(bytes, 0, sizeof(bytes));
-
-	cpu = mtk_r32(eth, MTK_QTX_CRX_PTR);
-	dma = mtk_r32(eth, MTK_QTX_DRX_PTR);
-
-	desc = mtk_qdma_phys_to_virt(ring, cpu);
-
-	while ((cpu != dma) && budget) {
-		u32 next_cpu = desc->txd2;
-		int mac;
-
-		desc = mtk_tx_next_qdma(ring, desc);
-		if ((desc->txd3 & QDMA_TX_OWNER_CPU) == 0)
-			break;
-
-		mac = (desc->txd4 >> TX_DMA_FPORT_SHIFT) &
-		       TX_DMA_FPORT_MASK;
-		mac--;
-
-		tx_buf = mtk_desc_to_tx_buf(ring, desc);
-		skb = tx_buf->skb;
-		if (!skb)
-			break;
-
-		if (skb != (struct sk_buff *)DMA_DUMMY_DESC) {
-			bytes[mac] += skb->len;
-			done[mac]++;
-			budget--;
-		}
-		mtk_txd_unmap(eth->dev, tx_buf);
-
-		ring->tx_last_free->txd2 = next_cpu;
-		ring->tx_last_free = desc;
-		atomic_inc(&ring->tx_free_count);
-
-		cpu = next_cpu;
-	}
-
-	mtk_w32(eth, cpu, MTK_QTX_CRX_PTR);
-
-	/* read hw index again make sure no new tx packet */
-	if (cpu != dma || cpu != mtk_r32(eth, MTK_QTX_DRX_PTR))
-		*tx_again = true;
-
-	for (i = 0; i < eth->soc->mac_count; i++) {
-		if (!done[i])
-			continue;
-		netdev_completed_queue(eth->netdev[i], done[i], bytes[i]);
-		total += done[i];
-	}
-
-	return total;
-}
-
-static int mtk_poll_tx(struct mtk_eth *eth, int budget, u32 tx_intr,
-		       bool *tx_again)
-{
-	struct mtk_tx_ring *ring = &eth->tx_ring;
-	struct net_device *netdev = eth->netdev[0];
-	int done;
-
-	done = eth->tx_ring.tx_poll(eth, budget, tx_again);
-	if (!*tx_again)
-		mtk_irq_ack(eth, tx_intr);
-
-	if (!done)
-		return 0;
-
-	smp_mb();
-	if (unlikely(!netif_queue_stopped(netdev)))
-		return done;
-
-	if (atomic_read(&ring->tx_free_count) > ring->tx_thresh)
-		netif_wake_queue(netdev);
-
-	return done;
-}
-
-static void mtk_stats_update(struct mtk_eth *eth)
-{
-	int i;
-
-	for (i = 0; i < eth->soc->mac_count; i++) {
-		if (!eth->mac[i] || !eth->mac[i]->hw_stats)
-			continue;
-		if (spin_trylock(&eth->mac[i]->hw_stats->stats_lock)) {
-			mtk_stats_update_mac(eth->mac[i]);
-			spin_unlock(&eth->mac[i]->hw_stats->stats_lock);
-		}
-	}
-}
-
-static int mtk_poll(struct napi_struct *napi, int budget)
-{
-	struct mtk_eth *eth = container_of(napi, struct mtk_eth, rx_napi);
-	u32 status, mtk_status, mask, tx_intr, rx_intr, status_intr;
-	int tx_done, rx_done;
-	bool tx_again = false;
-
-	status = mtk_irq_pending(eth);
-	mtk_status = mtk_irq_pending_status(eth);
-	tx_intr = eth->soc->tx_int;
-	rx_intr = eth->soc->rx_int;
-	status_intr = eth->soc->status_int;
-	tx_done = 0;
-	rx_done = 0;
-	tx_again = 0;
-
-	if (status & tx_intr)
-		tx_done = mtk_poll_tx(eth, budget, tx_intr, &tx_again);
-
-	if (status & rx_intr)
-		rx_done = mtk_poll_rx(napi, budget, eth, rx_intr);
-
-	if (unlikely(mtk_status & status_intr)) {
-		mtk_stats_update(eth);
-		mtk_irq_ack_status(eth, status_intr);
-	}
-
-	if (unlikely(netif_msg_intr(eth))) {
-		mask = mtk_irq_enabled(eth);
-		netdev_info(eth->netdev[0],
-			    "done tx %d, rx %d, intr 0x%08x/0x%x\n",
-			    tx_done, rx_done, status, mask);
-	}
-
-	if (tx_again || rx_done == budget)
-		return budget;
-
-	status = mtk_irq_pending(eth);
-	if (status & (tx_intr | rx_intr))
-		return budget;
-
-	napi_complete(napi);
-	mtk_irq_enable(eth, tx_intr | rx_intr);
-
-	return rx_done;
-}
-
-static int mtk_pdma_tx_alloc(struct mtk_eth *eth)
-{
-	int i;
-	struct mtk_tx_ring *ring = &eth->tx_ring;
-
-	ring->tx_ring_size = eth->soc->dma_ring_size;
-	ring->tx_free_idx = 0;
-	ring->tx_next_idx = 0;
-	ring->tx_thresh = max((unsigned long)ring->tx_ring_size >> 2,
-			      MAX_SKB_FRAGS);
-
-	ring->tx_buf = kcalloc(ring->tx_ring_size, sizeof(*ring->tx_buf),
-			       GFP_KERNEL);
-	if (!ring->tx_buf)
-		goto no_tx_mem;
-
-	ring->tx_dma =
-		dma_alloc_coherent(eth->dev,
-				   ring->tx_ring_size * sizeof(*ring->tx_dma),
-				   &ring->tx_phys, GFP_ATOMIC | __GFP_ZERO);
-	if (!ring->tx_dma)
-		goto no_tx_mem;
-
-	for (i = 0; i < ring->tx_ring_size; i++) {
-		ring->tx_dma[i].txd2 = TX_DMA_DESP2_DEF;
-		ring->tx_dma[i].txd4 = eth->soc->txd4;
-	}
-
-	atomic_set(&ring->tx_free_count, mtk_pdma_empty_txd(ring));
-	ring->tx_map = mtk_pdma_tx_map;
-	ring->tx_poll = mtk_pdma_tx_poll;
-	ring->tx_clean = mtk_pdma_tx_clean;
-
-	/* make sure that all changes to the dma ring are flushed before we
-	 * continue
-	 */
-	wmb();
-
-	mtk_reg_w32(eth, ring->tx_phys, MTK_REG_TX_BASE_PTR0);
-	mtk_reg_w32(eth, ring->tx_ring_size, MTK_REG_TX_MAX_CNT0);
-	mtk_reg_w32(eth, 0, MTK_REG_TX_CTX_IDX0);
-	mtk_reg_w32(eth, MTK_PST_DTX_IDX0, MTK_REG_PDMA_RST_CFG);
-
-	return 0;
-
-no_tx_mem:
-	return -ENOMEM;
-}
-
-static int mtk_qdma_tx_alloc_tx(struct mtk_eth *eth)
-{
-	struct mtk_tx_ring *ring = &eth->tx_ring;
-	int i, sz = sizeof(*ring->tx_dma);
-
-	ring->tx_ring_size = eth->soc->dma_ring_size;
-	ring->tx_buf = kcalloc(ring->tx_ring_size, sizeof(*ring->tx_buf),
-			       GFP_KERNEL);
-	if (!ring->tx_buf)
-		goto no_tx_mem;
-
-	ring->tx_dma = dma_alloc_coherent(eth->dev, ring->tx_ring_size * sz,
-					  &ring->tx_phys,
-					  GFP_ATOMIC | __GFP_ZERO);
-	if (!ring->tx_dma)
-		goto no_tx_mem;
-
-	for (i = 0; i < ring->tx_ring_size; i++) {
-		int next = (i + 1) % ring->tx_ring_size;
-		u32 next_ptr = ring->tx_phys + next * sz;
-
-		ring->tx_dma[i].txd2 = next_ptr;
-		ring->tx_dma[i].txd3 = TX_DMA_DESP2_DEF;
-	}
-
-	atomic_set(&ring->tx_free_count, ring->tx_ring_size - 2);
-	ring->tx_next_free = &ring->tx_dma[0];
-	ring->tx_last_free = &ring->tx_dma[ring->tx_ring_size - 2];
-	ring->tx_thresh = max((unsigned long)ring->tx_ring_size >> 2,
-			      MAX_SKB_FRAGS);
-
-	ring->tx_map = mtk_qdma_tx_map;
-	ring->tx_poll = mtk_qdma_tx_poll;
-	ring->tx_clean = mtk_qdma_tx_clean;
-
-	/* make sure that all changes to the dma ring are flushed before we
-	 * continue
-	 */
-	wmb();
-
-	mtk_w32(eth, ring->tx_phys, MTK_QTX_CTX_PTR);
-	mtk_w32(eth, ring->tx_phys, MTK_QTX_DTX_PTR);
-	mtk_w32(eth,
-		ring->tx_phys + ((ring->tx_ring_size - 1) * sz),
-		MTK_QTX_CRX_PTR);
-	mtk_w32(eth,
-		ring->tx_phys + ((ring->tx_ring_size - 1) * sz),
-		MTK_QTX_DRX_PTR);
-
-	return 0;
-
-no_tx_mem:
-	return -ENOMEM;
-}
-
-static int mtk_qdma_init(struct mtk_eth *eth, int ring)
-{
-	int err;
-
-	err = mtk_init_fq_dma(eth);
-	if (err)
-		return err;
-
-	err = mtk_qdma_tx_alloc_tx(eth);
-	if (err)
-		return err;
-
-	err = mtk_dma_rx_alloc(eth, &eth->rx_ring[ring]);
-	if (err)
-		return err;
-
-	mtk_w32(eth, eth->rx_ring[ring].rx_phys, MTK_QRX_BASE_PTR0);
-	mtk_w32(eth, eth->rx_ring[ring].rx_ring_size, MTK_QRX_MAX_CNT0);
-	mtk_w32(eth, eth->rx_ring[ring].rx_calc_idx, MTK_QRX_CRX_IDX0);
-	mtk_w32(eth, MTK_PST_DRX_IDX0, MTK_QDMA_RST_IDX);
-	mtk_w32(eth, (QDMA_RES_THRES << 8) | QDMA_RES_THRES, MTK_QTX_CFG(0));
-
-	/* Enable random early drop and set drop threshold automatically */
-	mtk_w32(eth, 0x174444, MTK_QDMA_FC_THRES);
-	mtk_w32(eth, 0x0, MTK_QDMA_HRED2);
-
-	return 0;
-}
-
-static int mtk_pdma_qdma_init(struct mtk_eth *eth)
-{
-	int err = mtk_qdma_init(eth, 1);
-
-	if (err)
-		return err;
-
-	err = mtk_dma_rx_alloc(eth, &eth->rx_ring[0]);
-	if (err)
-		return err;
-
-	mtk_reg_w32(eth, eth->rx_ring[0].rx_phys, MTK_REG_RX_BASE_PTR0);
-	mtk_reg_w32(eth, eth->rx_ring[0].rx_ring_size, MTK_REG_RX_MAX_CNT0);
-	mtk_reg_w32(eth, eth->rx_ring[0].rx_calc_idx, MTK_REG_RX_CALC_IDX0);
-	mtk_reg_w32(eth, MTK_PST_DRX_IDX0, MTK_REG_PDMA_RST_CFG);
-
-	return 0;
-}
-
-static int mtk_pdma_init(struct mtk_eth *eth)
-{
-	struct mtk_rx_ring *ring = &eth->rx_ring[0];
-	int err;
-
-	err = mtk_pdma_tx_alloc(eth);
-	if (err)
-		return err;
-
-	err = mtk_dma_rx_alloc(eth, ring);
-	if (err)
-		return err;
-
-	mtk_reg_w32(eth, ring->rx_phys, MTK_REG_RX_BASE_PTR0);
-	mtk_reg_w32(eth, ring->rx_ring_size, MTK_REG_RX_MAX_CNT0);
-	mtk_reg_w32(eth, ring->rx_calc_idx, MTK_REG_RX_CALC_IDX0);
-	mtk_reg_w32(eth, MTK_PST_DRX_IDX0, MTK_REG_PDMA_RST_CFG);
-
-	return 0;
-}
-
-static void mtk_dma_free(struct mtk_eth *eth)
-{
-	int i;
-
-	for (i = 0; i < eth->soc->mac_count; i++)
-		if (eth->netdev[i])
-			netdev_reset_queue(eth->netdev[i]);
-	eth->tx_ring.tx_clean(eth);
-	mtk_clean_rx(eth, &eth->rx_ring[0]);
-	mtk_clean_rx(eth, &eth->rx_ring[1]);
-	kfree(eth->scratch_head);
-}
-
-static void mtk_tx_timeout(struct net_device *dev)
-{
-	struct mtk_mac *mac = netdev_priv(dev);
-	struct mtk_eth *eth = mac->hw;
-	struct mtk_tx_ring *ring = &eth->tx_ring;
-
-	eth->netdev[mac->id]->stats.tx_errors++;
-	netif_err(eth, tx_err, dev,
-		  "transmit timed out\n");
-	if (eth->soc->dma_type & MTK_PDMA) {
-		netif_info(eth, drv, dev, "pdma_cfg:%08x\n",
-			   mtk_reg_r32(eth, MTK_REG_PDMA_GLO_CFG));
-		netif_info(eth, drv, dev,
-			   "tx_ring=%d, base=%08x, max=%u, ctx=%u, dtx=%u, fdx=%hu, next=%hu\n",
-			   0, mtk_reg_r32(eth, MTK_REG_TX_BASE_PTR0),
-			   mtk_reg_r32(eth, MTK_REG_TX_MAX_CNT0),
-			   mtk_reg_r32(eth, MTK_REG_TX_CTX_IDX0),
-			   mtk_reg_r32(eth, MTK_REG_TX_DTX_IDX0),
-			   ring->tx_free_idx,
-			   ring->tx_next_idx);
-	}
-	if (eth->soc->dma_type & MTK_QDMA) {
-		netif_info(eth, drv, dev, "qdma_cfg:%08x\n",
-			   mtk_r32(eth, MTK_QDMA_GLO_CFG));
-		netif_info(eth, drv, dev,
-			   "tx_ring=%d, ctx=%08x, dtx=%08x, crx=%08x, drx=%08x, free=%hu\n",
-			   0, mtk_r32(eth, MTK_QTX_CTX_PTR),
-			   mtk_r32(eth, MTK_QTX_DTX_PTR),
-			   mtk_r32(eth, MTK_QTX_CRX_PTR),
-			   mtk_r32(eth, MTK_QTX_DRX_PTR),
-			   atomic_read(&ring->tx_free_count));
-	}
-	netif_info(eth, drv, dev,
-		   "rx_ring=%d, base=%08x, max=%u, calc=%u, drx=%u\n",
-		   0, mtk_reg_r32(eth, MTK_REG_RX_BASE_PTR0),
-		   mtk_reg_r32(eth, MTK_REG_RX_MAX_CNT0),
-		   mtk_reg_r32(eth, MTK_REG_RX_CALC_IDX0),
-		   mtk_reg_r32(eth, MTK_REG_RX_DRX_IDX0));
-
-	schedule_work(&mac->pending_work);
-}
-
-static irqreturn_t mtk_handle_irq(int irq, void *_eth)
-{
-	struct mtk_eth *eth = _eth;
-	u32 status, int_mask;
-
-	status = mtk_irq_pending(eth);
-	if (unlikely(!status))
-		return IRQ_NONE;
-
-	int_mask = (eth->soc->rx_int | eth->soc->tx_int);
-	if (likely(status & int_mask)) {
-		if (likely(napi_schedule_prep(&eth->rx_napi)))
-			__napi_schedule(&eth->rx_napi);
-	} else {
-		mtk_irq_ack(eth, status);
-	}
-	mtk_irq_disable(eth, int_mask);
-
-	return IRQ_HANDLED;
-}
-
-#ifdef CONFIG_NET_POLL_CONTROLLER
-static void mtk_poll_controller(struct net_device *dev)
-{
-	struct mtk_mac *mac = netdev_priv(dev);
-	struct mtk_eth *eth = mac->hw;
-	u32 int_mask = eth->soc->tx_int | eth->soc->rx_int;
-
-	mtk_irq_disable(eth, int_mask);
-	mtk_handle_irq(dev->irq, dev);
-	mtk_irq_enable(eth, int_mask);
-}
-#endif
-
-int mtk_set_clock_cycle(struct mtk_eth *eth)
-{
-	unsigned long sysclk = eth->sysclk;
-
-	sysclk /= MTK_US_CYC_CNT_DIVISOR;
-	sysclk <<= MTK_US_CYC_CNT_SHIFT;
-
-	mtk_w32(eth, (mtk_r32(eth, MTK_GLO_CFG) &
-			~(MTK_US_CYC_CNT_MASK << MTK_US_CYC_CNT_SHIFT)) |
-			sysclk,
-			MTK_GLO_CFG);
-	return 0;
-}
-
-void mtk_fwd_config(struct mtk_eth *eth)
-{
-	u32 fwd_cfg;
-
-	fwd_cfg = mtk_r32(eth, MTK_GDMA1_FWD_CFG);
-
-	/* disable jumbo frame */
-	if (eth->soc->jumbo_frame)
-		fwd_cfg &= ~MTK_GDM1_JMB_EN;
-
-	/* set unicast/multicast/broadcast frame to cpu */
-	fwd_cfg &= ~0xffff;
-
-	mtk_w32(eth, fwd_cfg, MTK_GDMA1_FWD_CFG);
-}
-
-void mtk_csum_config(struct mtk_eth *eth)
-{
-	if (eth->soc->hw_features & NETIF_F_RXCSUM)
-		mtk_w32(eth, mtk_r32(eth, MTK_GDMA1_FWD_CFG) |
-			(MTK_GDM1_ICS_EN | MTK_GDM1_TCS_EN | MTK_GDM1_UCS_EN),
-			MTK_GDMA1_FWD_CFG);
-	else
-		mtk_w32(eth, mtk_r32(eth, MTK_GDMA1_FWD_CFG) &
-			~(MTK_GDM1_ICS_EN | MTK_GDM1_TCS_EN | MTK_GDM1_UCS_EN),
-			MTK_GDMA1_FWD_CFG);
-	if (eth->soc->hw_features & NETIF_F_IP_CSUM)
-		mtk_w32(eth, mtk_r32(eth, MTK_CDMA_CSG_CFG) |
-			(MTK_ICS_GEN_EN | MTK_TCS_GEN_EN | MTK_UCS_GEN_EN),
-			MTK_CDMA_CSG_CFG);
-	else
-		mtk_w32(eth, mtk_r32(eth, MTK_CDMA_CSG_CFG) &
-			~(MTK_ICS_GEN_EN | MTK_TCS_GEN_EN | MTK_UCS_GEN_EN),
-			MTK_CDMA_CSG_CFG);
-}
-
-static int mtk_start_dma(struct mtk_eth *eth)
-{
-	unsigned long flags;
-	u32 val;
-	int err;
-
-	if (eth->soc->dma_type == MTK_PDMA)
-		err = mtk_pdma_init(eth);
-	else if (eth->soc->dma_type == MTK_QDMA)
-		err = mtk_qdma_init(eth, 0);
-	else
-		err = mtk_pdma_qdma_init(eth);
-	if (err) {
-		mtk_dma_free(eth);
-		return err;
-	}
-
-	spin_lock_irqsave(&eth->page_lock, flags);
-
-	val = MTK_TX_WB_DDONE | MTK_RX_DMA_EN | MTK_TX_DMA_EN;
-	if (eth->soc->rx_2b_offset)
-		val |= MTK_RX_2B_OFFSET;
-	val |= eth->soc->pdma_glo_cfg;
-
-	if (eth->soc->dma_type & MTK_PDMA)
-		mtk_reg_w32(eth, val, MTK_REG_PDMA_GLO_CFG);
-
-	if (eth->soc->dma_type & MTK_QDMA)
-		mtk_w32(eth, val, MTK_QDMA_GLO_CFG);
-
-	spin_unlock_irqrestore(&eth->page_lock, flags);
-
-	return 0;
-}
-
-static int mtk_open(struct net_device *dev)
-{
-	struct mtk_mac *mac = netdev_priv(dev);
-	struct mtk_eth *eth = mac->hw;
-
-	dma_coerce_mask_and_coherent(&dev->dev, DMA_BIT_MASK(32));
-
-	if (!atomic_read(&eth->dma_refcnt)) {
-		int err = mtk_start_dma(eth);
-
-		if (err)
-			return err;
-
-		napi_enable(&eth->rx_napi);
-		mtk_irq_enable(eth, eth->soc->tx_int | eth->soc->rx_int);
-	}
-	atomic_inc(&eth->dma_refcnt);
-
-	if (eth->phy)
-		eth->phy->start(mac);
-
-	if (eth->soc->has_carrier && eth->soc->has_carrier(eth))
-		netif_carrier_on(dev);
-
-	netif_start_queue(dev);
-	eth->soc->fwd_config(eth);
-
-	return 0;
-}
-
-static void mtk_stop_dma(struct mtk_eth *eth, u32 glo_cfg)
-{
-	unsigned long flags;
-	u32 val;
-	int i;
-
-	/* stop the dma enfine */
-	spin_lock_irqsave(&eth->page_lock, flags);
-	val = mtk_r32(eth, glo_cfg);
-	mtk_w32(eth, val & ~(MTK_TX_WB_DDONE | MTK_RX_DMA_EN | MTK_TX_DMA_EN),
-		glo_cfg);
-	spin_unlock_irqrestore(&eth->page_lock, flags);
-
-	/* wait for dma stop */
-	for (i = 0; i < 10; i++) {
-		val = mtk_r32(eth, glo_cfg);
-		if (val & (MTK_TX_DMA_BUSY | MTK_RX_DMA_BUSY)) {
-			msleep(20);
-			continue;
-		}
-		break;
-	}
-}
-
-static int mtk_stop(struct net_device *dev)
-{
-	struct mtk_mac *mac = netdev_priv(dev);
-	struct mtk_eth *eth = mac->hw;
-
-	netif_tx_disable(dev);
-	if (eth->phy)
-		eth->phy->stop(mac);
-
-	if (!atomic_dec_and_test(&eth->dma_refcnt))
-		return 0;
-
-	mtk_irq_disable(eth, eth->soc->tx_int | eth->soc->rx_int);
-	napi_disable(&eth->rx_napi);
-
-	if (eth->soc->dma_type & MTK_PDMA)
-		mtk_stop_dma(eth, mtk_reg_table[MTK_REG_PDMA_GLO_CFG]);
-
-	if (eth->soc->dma_type & MTK_QDMA)
-		mtk_stop_dma(eth, MTK_QDMA_GLO_CFG);
-
-	mtk_dma_free(eth);
-
-	return 0;
-}
-
-static int __init mtk_init_hw(struct mtk_eth *eth)
-{
-	int i, err;
-
-	eth->soc->reset_fe(eth);
-
-	if (eth->soc->switch_init)
-		if (eth->soc->switch_init(eth)) {
-			dev_err(eth->dev, "failed to initialize switch core\n");
-			return -ENODEV;
-		}
-
-	err = devm_request_irq(eth->dev, eth->irq, mtk_handle_irq, 0,
-			       dev_name(eth->dev), eth);
-	if (err)
-		return err;
-
-	err = mtk_mdio_init(eth);
-	if (err)
-		return err;
-
-	/* disable delay and normal interrupt */
-	mtk_reg_w32(eth, 0, MTK_REG_DLY_INT_CFG);
-	if (eth->soc->dma_type & MTK_QDMA)
-		mtk_w32(eth, 0, MTK_QDMA_DELAY_INT);
-	mtk_irq_disable(eth, eth->soc->tx_int | eth->soc->rx_int);
-
-	/* frame engine will push VLAN tag regarding to VIDX field in Tx desc */
-	if (mtk_reg_table[MTK_REG_MTK_DMA_VID_BASE])
-		for (i = 0; i < 16; i += 2)
-			mtk_w32(eth, ((i + 1) << 16) + i,
-				mtk_reg_table[MTK_REG_MTK_DMA_VID_BASE] +
-				(i * 2));
-
-	if (eth->soc->fwd_config(eth))
-		dev_err(eth->dev, "unable to get clock\n");
-
-	if (mtk_reg_table[MTK_REG_MTK_RST_GL]) {
-		mtk_reg_w32(eth, 1, MTK_REG_MTK_RST_GL);
-		mtk_reg_w32(eth, 0, MTK_REG_MTK_RST_GL);
-	}
-
-	return 0;
-}
-
-static int __init mtk_init(struct net_device *dev)
-{
-	struct mtk_mac *mac = netdev_priv(dev);
-	struct mtk_eth *eth = mac->hw;
-	struct device_node *port;
-	const char *mac_addr;
-	int err;
-
-	mac_addr = of_get_mac_address(mac->of_node);
-	if (mac_addr)
-		ether_addr_copy(dev->dev_addr, mac_addr);
-
-	/* If the mac address is invalid, use random mac address  */
-	if (!is_valid_ether_addr(dev->dev_addr)) {
-		eth_hw_addr_random(dev);
-		dev_err(eth->dev, "generated random MAC address %pM\n",
-			dev->dev_addr);
-	}
-	mac->hw->soc->set_mac(mac, dev->dev_addr);
-
-	if (eth->soc->port_init)
-		for_each_child_of_node(mac->of_node, port)
-			if (of_device_is_compatible(port,
-						    "mediatek,eth-port") &&
-			    of_device_is_available(port))
-				eth->soc->port_init(eth, mac, port);
-
-	if (eth->phy) {
-		err = eth->phy->connect(mac);
-		if (err)
-			return err;
-	}
-
-	return 0;
-}
-
-static void mtk_uninit(struct net_device *dev)
-{
-	struct mtk_mac *mac = netdev_priv(dev);
-	struct mtk_eth *eth = mac->hw;
-
-	if (eth->phy)
-		eth->phy->disconnect(mac);
-	mtk_mdio_cleanup(eth);
-
-	mtk_irq_disable(eth, ~0);
-	free_irq(dev->irq, dev);
-}
-
-static int mtk_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
-{
-	struct mtk_mac *mac = netdev_priv(dev);
-
-	if (!mac->phy_dev)
-		return -ENODEV;
-
-	switch (cmd) {
-	case SIOCGMIIPHY:
-	case SIOCGMIIREG:
-	case SIOCSMIIREG:
-		return phy_mii_ioctl(mac->phy_dev, ifr, cmd);
-	default:
-		break;
-	}
-
-	return -EOPNOTSUPP;
-}
-
-static int mtk_change_mtu(struct net_device *dev, int new_mtu)
-{
-	struct mtk_mac *mac = netdev_priv(dev);
-	struct mtk_eth *eth = mac->hw;
-	int frag_size, old_mtu;
-	u32 fwd_cfg;
-
-	if (!eth->soc->jumbo_frame)
-		return eth_change_mtu(dev, new_mtu);
-
-	frag_size = mtk_max_frag_size(new_mtu);
-	if (new_mtu < 68 || frag_size > PAGE_SIZE)
-		return -EINVAL;
-
-	old_mtu = dev->mtu;
-	dev->mtu = new_mtu;
-
-	/* return early if the buffer sizes will not change */
-	if (old_mtu <= ETH_DATA_LEN && new_mtu <= ETH_DATA_LEN)
-		return 0;
-	if (old_mtu > ETH_DATA_LEN && new_mtu > ETH_DATA_LEN)
-		return 0;
-
-	if (new_mtu <= ETH_DATA_LEN)
-		eth->rx_ring[0].frag_size = mtk_max_frag_size(ETH_DATA_LEN);
-	else
-		eth->rx_ring[0].frag_size = PAGE_SIZE;
-	eth->rx_ring[0].rx_buf_size =
-				mtk_max_buf_size(eth->rx_ring[0].frag_size);
-
-	if (!netif_running(dev))
-		return 0;
-
-	mtk_stop(dev);
-	fwd_cfg = mtk_r32(eth, MTK_GDMA1_FWD_CFG);
-	if (new_mtu <= ETH_DATA_LEN) {
-		fwd_cfg &= ~MTK_GDM1_JMB_EN;
-	} else {
-		fwd_cfg &= ~(MTK_GDM1_JMB_LEN_MASK << MTK_GDM1_JMB_LEN_SHIFT);
-		fwd_cfg |= (DIV_ROUND_UP(frag_size, 1024) <<
-				MTK_GDM1_JMB_LEN_SHIFT) | MTK_GDM1_JMB_EN;
-	}
-	mtk_w32(eth, fwd_cfg, MTK_GDMA1_FWD_CFG);
-
-	return mtk_open(dev);
-}
-
-static void mtk_pending_work(struct work_struct *work)
-{
-	struct mtk_mac *mac = container_of(work, struct mtk_mac, pending_work);
-	struct mtk_eth *eth = mac->hw;
-	struct net_device *dev = eth->netdev[mac->id];
-	int err;
-
-	rtnl_lock();
-	mtk_stop(dev);
-
-	err = mtk_open(dev);
-	if (err) {
-		netif_alert(eth, ifup, dev,
-			    "Driver up/down cycle failed, closing device.\n");
-		dev_close(dev);
-	}
-	rtnl_unlock();
-}
-
-static int mtk_cleanup(struct mtk_eth *eth)
-{
-	int i;
-
-	for (i = 0; i < eth->soc->mac_count; i++) {
-		struct mtk_mac *mac = netdev_priv(eth->netdev[i]);
-
-		if (!eth->netdev[i])
-			continue;
-
-		unregister_netdev(eth->netdev[i]);
-		free_netdev(eth->netdev[i]);
-		cancel_work_sync(&mac->pending_work);
-	}
-
-	return 0;
-}
-
-static const struct net_device_ops mtk_netdev_ops = {
-	.ndo_init		= mtk_init,
-	.ndo_uninit		= mtk_uninit,
-	.ndo_open		= mtk_open,
-	.ndo_stop		= mtk_stop,
-	.ndo_start_xmit		= mtk_start_xmit,
-	.ndo_set_mac_address	= mtk_set_mac_address,
-	.ndo_validate_addr	= eth_validate_addr,
-	.ndo_do_ioctl		= mtk_do_ioctl,
-	.ndo_change_mtu		= mtk_change_mtu,
-	.ndo_tx_timeout		= mtk_tx_timeout,
-	.ndo_get_stats64        = mtk_get_stats64,
-	.ndo_vlan_rx_add_vid	= mtk_vlan_rx_add_vid,
-	.ndo_vlan_rx_kill_vid	= mtk_vlan_rx_kill_vid,
-#ifdef CONFIG_NET_POLL_CONTROLLER
-	.ndo_poll_controller	= mtk_poll_controller,
-#endif
-};
-
-static int mtk_add_mac(struct mtk_eth *eth, struct device_node *np)
-{
-	struct mtk_mac *mac;
-	const __be32 *_id = of_get_property(np, "reg", NULL);
-	int id, err;
-
-	if (!_id) {
-		dev_err(eth->dev, "missing mac id\n");
-		return -EINVAL;
-	}
-	id = be32_to_cpup(_id);
-	if (id >= eth->soc->mac_count || eth->netdev[id]) {
-		dev_err(eth->dev, "%d is not a valid mac id\n", id);
-		return -EINVAL;
-	}
-
-	eth->netdev[id] = alloc_etherdev(sizeof(*mac));
-	if (!eth->netdev[id]) {
-		dev_err(eth->dev, "alloc_etherdev failed\n");
-		return -ENOMEM;
-	}
-	mac = netdev_priv(eth->netdev[id]);
-	eth->mac[id] = mac;
-	mac->id = id;
-	mac->hw = eth;
-	mac->of_node = np;
-	INIT_WORK(&mac->pending_work, mtk_pending_work);
-
-	if (mtk_reg_table[MTK_REG_MTK_COUNTER_BASE]) {
-		mac->hw_stats = devm_kzalloc(eth->dev,
-					     sizeof(*mac->hw_stats),
-					     GFP_KERNEL);
-		if (!mac->hw_stats) {
-			err = -ENOMEM;
-			goto free_netdev;
-		}
-		spin_lock_init(&mac->hw_stats->stats_lock);
-		mac->hw_stats->reg_offset = id * MTK_STAT_OFFSET;
-	}
-
-	SET_NETDEV_DEV(eth->netdev[id], eth->dev);
-	eth->netdev[id]->netdev_ops = &mtk_netdev_ops;
-	eth->netdev[id]->base_addr = (unsigned long)eth->base;
-
-	if (eth->soc->init_data)
-		eth->soc->init_data(eth->soc, eth->netdev[id]);
-
-	eth->netdev[id]->vlan_features = eth->soc->hw_features &
-		~(NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX);
-	eth->netdev[id]->features |= eth->soc->hw_features;
-
-	if (mtk_reg_table[MTK_REG_MTK_DMA_VID_BASE])
-		eth->netdev[id]->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
-
-	mtk_set_ethtool_ops(eth->netdev[id]);
-
-	err = register_netdev(eth->netdev[id]);
-	if (err) {
-		dev_err(eth->dev, "error bringing up device\n");
-		err = -ENOMEM;
-		goto free_netdev;
-	}
-	eth->netdev[id]->irq = eth->irq;
-	netif_info(eth, probe, eth->netdev[id],
-		   "mediatek frame engine at 0x%08lx, irq %d\n",
-		   eth->netdev[id]->base_addr, eth->netdev[id]->irq);
-
-	return 0;
-
-free_netdev:
-	free_netdev(eth->netdev[id]);
-	return err;
-}
-
-static int mtk_probe(struct platform_device *pdev)
-{
-	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	const struct of_device_id *match;
-	struct device_node *mac_np;
-	struct mtk_soc_data *soc;
-	struct mtk_eth *eth;
-	struct clk *sysclk;
-	int err;
-
-	device_reset(&pdev->dev);
-
-	match = of_match_device(of_mtk_match, &pdev->dev);
-	soc = (struct mtk_soc_data *)match->data;
-
-	if (soc->reg_table)
-		mtk_reg_table = soc->reg_table;
-
-	eth = devm_kzalloc(&pdev->dev, sizeof(*eth), GFP_KERNEL);
-	if (!eth)
-		return -ENOMEM;
-
-	eth->base = devm_ioremap_resource(&pdev->dev, res);
-	if (IS_ERR(eth->base))
-		return PTR_ERR(eth->base);
-
-	spin_lock_init(&eth->page_lock);
-
-	eth->ethsys = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
-						      "mediatek,ethsys");
-	if (IS_ERR(eth->ethsys))
-		return PTR_ERR(eth->ethsys);
-
-	eth->irq = platform_get_irq(pdev, 0);
-	if (eth->irq < 0) {
-		dev_err(&pdev->dev, "no IRQ resource found\n");
-		return -ENXIO;
-	}
-
-	sysclk = devm_clk_get(&pdev->dev, NULL);
-	if (IS_ERR(sysclk)) {
-		dev_err(&pdev->dev,
-			"the clock is not defined in the devicetree\n");
-		return -ENXIO;
-	}
-	eth->sysclk = clk_get_rate(sysclk);
-
-	eth->switch_np = of_parse_phandle(pdev->dev.of_node,
-					  "mediatek,switch", 0);
-	if (soc->has_switch && !eth->switch_np) {
-		dev_err(&pdev->dev, "failed to read switch phandle\n");
-		return -ENODEV;
-	}
-
-	eth->dev = &pdev->dev;
-	eth->soc = soc;
-	eth->msg_enable = netif_msg_init(mtk_msg_level, MTK_DEFAULT_MSG_ENABLE);
-
-	err = mtk_init_hw(eth);
-	if (err)
-		return err;
-
-	if (eth->soc->mac_count > 1) {
-		for_each_child_of_node(pdev->dev.of_node, mac_np) {
-			if (!of_device_is_compatible(mac_np,
-						     "mediatek,eth-mac"))
-				continue;
-
-			if (!of_device_is_available(mac_np))
-				continue;
-
-			err = mtk_add_mac(eth, mac_np);
-			if (err)
-				goto err_free_dev;
-		}
-
-		init_dummy_netdev(&eth->dummy_dev);
-		netif_napi_add(&eth->dummy_dev, &eth->rx_napi, mtk_poll,
-			       soc->napi_weight);
-	} else {
-		err = mtk_add_mac(eth, pdev->dev.of_node);
-		if (err)
-			goto err_free_dev;
-		netif_napi_add(eth->netdev[0], &eth->rx_napi, mtk_poll,
-			       soc->napi_weight);
-	}
-
-	platform_set_drvdata(pdev, eth);
-
-	return 0;
-
-err_free_dev:
-	mtk_cleanup(eth);
-	return err;
-}
-
-static int mtk_remove(struct platform_device *pdev)
-{
-	struct mtk_eth *eth = platform_get_drvdata(pdev);
-
-	netif_napi_del(&eth->rx_napi);
-	mtk_cleanup(eth);
-	platform_set_drvdata(pdev, NULL);
-
-	return 0;
-}
-
-static struct platform_driver mtk_driver = {
-	.probe = mtk_probe,
-	.remove = mtk_remove,
-	.driver = {
-		.name = "mtk_soc_eth",
-		.of_match_table = of_mtk_match,
-	},
-};
-
-module_platform_driver(mtk_driver);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
-MODULE_DESCRIPTION("Ethernet driver for MediaTek SoC");

drivers/staging/mt7621-eth/mtk_eth_soc.h

-/*   This program is free software; you can redistribute it and/or modify
- *   it under the terms of the GNU General Public License as published by
- *   the Free Software Foundation; version 2 of the License
- *
- *   This program is distributed in the hope that it will be useful,
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *   GNU General Public License for more details.
- *
- *   Copyright (C) 2009-2016 John Crispin <blogic@openwrt.org>
- *   Copyright (C) 2009-2016 Felix Fietkau <nbd@openwrt.org>
- *   Copyright (C) 2013-2016 Michael Lee <igvtee@gmail.com>
- */
-
-#ifndef MTK_ETH_H
-#define MTK_ETH_H
-
-#include <linux/mii.h>
-#include <linux/interrupt.h>
-#include <linux/netdevice.h>
-#include <linux/dma-mapping.h>
-#include <linux/phy.h>
-#include <linux/ethtool.h>
-#include <linux/version.h>
-#include <linux/atomic.h>
-
-/* these registers have different offsets depending on the SoC. we use a lookup
- * table for these
- */
-enum mtk_reg {
-	MTK_REG_PDMA_GLO_CFG = 0,
-	MTK_REG_PDMA_RST_CFG,
-	MTK_REG_DLY_INT_CFG,
-	MTK_REG_TX_BASE_PTR0,
-	MTK_REG_TX_MAX_CNT0,
-	MTK_REG_TX_CTX_IDX0,
-	MTK_REG_TX_DTX_IDX0,
-	MTK_REG_RX_BASE_PTR0,
-	MTK_REG_RX_MAX_CNT0,
-	MTK_REG_RX_CALC_IDX0,
-	MTK_REG_RX_DRX_IDX0,
-	MTK_REG_MTK_INT_ENABLE,
-	MTK_REG_MTK_INT_STATUS,
-	MTK_REG_MTK_DMA_VID_BASE,
-	MTK_REG_MTK_COUNTER_BASE,
-	MTK_REG_MTK_RST_GL,
-	MTK_REG_MTK_INT_STATUS2,
-	MTK_REG_COUNT
-};
-
-/* delayed interrupt bits */
-#define MTK_DELAY_EN_INT	0x80
-#define MTK_DELAY_MAX_INT	0x04
-#define MTK_DELAY_MAX_TOUT	0x04
-#define MTK_DELAY_TIME		20
-#define MTK_DELAY_CHAN		(((MTK_DELAY_EN_INT | MTK_DELAY_MAX_INT) << 8) \
-				 | MTK_DELAY_MAX_TOUT)
-#define MTK_DELAY_INIT		((MTK_DELAY_CHAN << 16) | MTK_DELAY_CHAN)
-#define MTK_PSE_FQFC_CFG_INIT	0x80504000
-#define MTK_PSE_FQFC_CFG_256Q	0xff908000
-
-/* interrupt bits */
-#define MTK_CNT_PPE_AF		BIT(31)
-#define MTK_CNT_GDM_AF		BIT(29)
-#define MTK_PSE_P2_FC		BIT(26)
-#define MTK_PSE_BUF_DROP	BIT(24)
-#define MTK_GDM_OTHER_DROP	BIT(23)
-#define MTK_PSE_P1_FC		BIT(22)
-#define MTK_PSE_P0_FC		BIT(21)
-#define MTK_PSE_FQ_EMPTY	BIT(20)
-#define MTK_GE1_STA_CHG		BIT(18)
-#define MTK_TX_COHERENT		BIT(17)
-#define MTK_RX_COHERENT		BIT(16)
-#define MTK_TX_DONE_INT3	BIT(11)
-#define MTK_TX_DONE_INT2	BIT(10)
-#define MTK_TX_DONE_INT1	BIT(9)
-#define MTK_TX_DONE_INT0	BIT(8)
-#define MTK_RX_DONE_INT0	BIT(2)
-#define MTK_TX_DLY_INT		BIT(1)
-#define MTK_RX_DLY_INT		BIT(0)
-
-#define MTK_RX_DONE_INT		MTK_RX_DONE_INT0
-#define MTK_TX_DONE_INT		(MTK_TX_DONE_INT0 | MTK_TX_DONE_INT1 | \
-				 MTK_TX_DONE_INT2 | MTK_TX_DONE_INT3)
-
-#define RT5350_RX_DLY_INT	BIT(30)
-#define RT5350_TX_DLY_INT	BIT(28)
-#define RT5350_RX_DONE_INT1	BIT(17)
-#define RT5350_RX_DONE_INT0	BIT(16)
-#define RT5350_TX_DONE_INT3	BIT(3)
-#define RT5350_TX_DONE_INT2	BIT(2)
-#define RT5350_TX_DONE_INT1	BIT(1)
-#define RT5350_TX_DONE_INT0	BIT(0)
-
-#define RT5350_RX_DONE_INT	(RT5350_RX_DONE_INT0 | RT5350_RX_DONE_INT1)
-#define RT5350_TX_DONE_INT	(RT5350_TX_DONE_INT0 | RT5350_TX_DONE_INT1 | \
-				 RT5350_TX_DONE_INT2 | RT5350_TX_DONE_INT3)
-
-/* registers */
-#define MTK_GDMA_OFFSET		0x0020
-#define MTK_PSE_OFFSET		0x0040
-#define MTK_GDMA2_OFFSET	0x0060
-#define MTK_CDMA_OFFSET		0x0080
-#define MTK_DMA_VID0		0x00a8
-#define MTK_PDMA_OFFSET		0x0100
-#define MTK_PPE_OFFSET		0x0200
-#define MTK_CMTABLE_OFFSET	0x0400
-#define MTK_POLICYTABLE_OFFSET	0x1000
-
-#define MT7621_GDMA_OFFSET	0x0500
-#define MT7620_GDMA_OFFSET	0x0600
-
-#define RT5350_PDMA_OFFSET	0x0800
-#define RT5350_SDM_OFFSET	0x0c00
-
-#define MTK_MDIO_ACCESS		0x00
-#define MTK_MDIO_CFG		0x04
-#define MTK_GLO_CFG		0x08
-#define MTK_RST_GL		0x0C
-#define MTK_INT_STATUS		0x10
-#define MTK_INT_ENABLE		0x14
-#define MTK_MDIO_CFG2		0x18
-#define MTK_FOC_TS_T		0x1C
-
-#define	MTK_GDMA1_FWD_CFG	(MTK_GDMA_OFFSET + 0x00)
-#define MTK_GDMA1_SCH_CFG	(MTK_GDMA_OFFSET + 0x04)
-#define MTK_GDMA1_SHPR_CFG	(MTK_GDMA_OFFSET + 0x08)
-#define MTK_GDMA1_MAC_ADRL	(MTK_GDMA_OFFSET + 0x0C)
-#define MTK_GDMA1_MAC_ADRH	(MTK_GDMA_OFFSET + 0x10)
-
-#define	MTK_GDMA2_FWD_CFG	(MTK_GDMA2_OFFSET + 0x00)
-#define MTK_GDMA2_SCH_CFG	(MTK_GDMA2_OFFSET + 0x04)
-#define MTK_GDMA2_SHPR_CFG	(MTK_GDMA2_OFFSET + 0x08)
-#define MTK_GDMA2_MAC_ADRL	(MTK_GDMA2_OFFSET + 0x0C)
-#define MTK_GDMA2_MAC_ADRH	(MTK_GDMA2_OFFSET + 0x10)
-
-#define MTK_PSE_FQ_CFG		(MTK_PSE_OFFSET + 0x00)
-#define MTK_CDMA_FC_CFG		(MTK_PSE_OFFSET + 0x04)
-#define MTK_GDMA1_FC_CFG	(MTK_PSE_OFFSET + 0x08)
-#define MTK_GDMA2_FC_CFG	(MTK_PSE_OFFSET + 0x0C)
-
-#define MTK_CDMA_CSG_CFG	(MTK_CDMA_OFFSET + 0x00)
-#define MTK_CDMA_SCH_CFG	(MTK_CDMA_OFFSET + 0x04)
-
-#define	MT7621_GDMA_FWD_CFG(x)	(MT7621_GDMA_OFFSET + (x * 0x1000))
-
-/* FIXME this might be different for different SOCs */
-#define	MT7620_GDMA1_FWD_CFG	(MT7621_GDMA_OFFSET + 0x00)
-
-#define RT5350_TX_BASE_PTR0	(RT5350_PDMA_OFFSET + 0x00)
-#define RT5350_TX_MAX_CNT0	(RT5350_PDMA_OFFSET + 0x04)
-#define RT5350_TX_CTX_IDX0	(RT5350_PDMA_OFFSET + 0x08)
-#define RT5350_TX_DTX_IDX0	(RT5350_PDMA_OFFSET + 0x0C)
-#define RT5350_TX_BASE_PTR1	(RT5350_PDMA_OFFSET + 0x10)
-#define RT5350_TX_MAX_CNT1	(RT5350_PDMA_OFFSET + 0x14)
-#define RT5350_TX_CTX_IDX1	(RT5350_PDMA_OFFSET + 0x18)
-#define RT5350_TX_DTX_IDX1	(RT5350_PDMA_OFFSET + 0x1C)
-#define RT5350_TX_BASE_PTR2	(RT5350_PDMA_OFFSET + 0x20)
-#define RT5350_TX_MAX_CNT2	(RT5350_PDMA_OFFSET + 0x24)
-#define RT5350_TX_CTX_IDX2	(RT5350_PDMA_OFFSET + 0x28)
-#define RT5350_TX_DTX_IDX2	(RT5350_PDMA_OFFSET + 0x2C)
-#define RT5350_TX_BASE_PTR3	(RT5350_PDMA_OFFSET + 0x30)
-#define RT5350_TX_MAX_CNT3	(RT5350_PDMA_OFFSET + 0x34)
-#define RT5350_TX_CTX_IDX3	(RT5350_PDMA_OFFSET + 0x38)
-#define RT5350_TX_DTX_IDX3	(RT5350_PDMA_OFFSET + 0x3C)
-#define RT5350_RX_BASE_PTR0	(RT5350_PDMA_OFFSET + 0x100)
-#define RT5350_RX_MAX_CNT0	(RT5350_PDMA_OFFSET + 0x104)
-#define RT5350_RX_CALC_IDX0	(RT5350_PDMA_OFFSET + 0x108)
-#define RT5350_RX_DRX_IDX0	(RT5350_PDMA_OFFSET + 0x10C)
-#define RT5350_RX_BASE_PTR1	(RT5350_PDMA_OFFSET + 0x110)
-#define RT5350_RX_MAX_CNT1	(RT5350_PDMA_OFFSET + 0x114)
-#define RT5350_RX_CALC_IDX1	(RT5350_PDMA_OFFSET + 0x118)
-#define RT5350_RX_DRX_IDX1	(RT5350_PDMA_OFFSET + 0x11C)
-#define RT5350_PDMA_GLO_CFG	(RT5350_PDMA_OFFSET + 0x204)
-#define RT5350_PDMA_RST_CFG	(RT5350_PDMA_OFFSET + 0x208)
-#define RT5350_DLY_INT_CFG	(RT5350_PDMA_OFFSET + 0x20c)
-#define RT5350_MTK_INT_STATUS	(RT5350_PDMA_OFFSET + 0x220)
-#define RT5350_MTK_INT_ENABLE	(RT5350_PDMA_OFFSET + 0x228)
-#define RT5350_PDMA_SCH_CFG	(RT5350_PDMA_OFFSET + 0x280)
-
-#define MTK_PDMA_GLO_CFG	(MTK_PDMA_OFFSET + 0x00)
-#define MTK_PDMA_RST_CFG	(MTK_PDMA_OFFSET + 0x04)
-#define MTK_PDMA_SCH_CFG	(MTK_PDMA_OFFSET + 0x08)
-#define MTK_DLY_INT_CFG		(MTK_PDMA_OFFSET + 0x0C)
-#define MTK_TX_BASE_PTR0	(MTK_PDMA_OFFSET + 0x10)
-#define MTK_TX_MAX_CNT0		(MTK_PDMA_OFFSET + 0x14)
-#define MTK_TX_CTX_IDX0		(MTK_PDMA_OFFSET + 0x18)
-#define MTK_TX_DTX_IDX0		(MTK_PDMA_OFFSET + 0x1C)
-#define MTK_TX_BASE_PTR1	(MTK_PDMA_OFFSET + 0x20)
-#define MTK_TX_MAX_CNT1		(MTK_PDMA_OFFSET + 0x24)
-#define MTK_TX_CTX_IDX1		(MTK_PDMA_OFFSET + 0x28)
-#define MTK_TX_DTX_IDX1		(MTK_PDMA_OFFSET + 0x2C)
-#define MTK_RX_BASE_PTR0	(MTK_PDMA_OFFSET + 0x30)
-#define MTK_RX_MAX_CNT0		(MTK_PDMA_OFFSET + 0x34)
-#define MTK_RX_CALC_IDX0	(MTK_PDMA_OFFSET + 0x38)
-#define MTK_RX_DRX_IDX0		(MTK_PDMA_OFFSET + 0x3C)
-#define MTK_TX_BASE_PTR2	(MTK_PDMA_OFFSET + 0x40)
-#define MTK_TX_MAX_CNT2		(MTK_PDMA_OFFSET + 0x44)
-#define MTK_TX_CTX_IDX2		(MTK_PDMA_OFFSET + 0x48)
-#define MTK_TX_DTX_IDX2		(MTK_PDMA_OFFSET + 0x4C)
-#define MTK_TX_BASE_PTR3	(MTK_PDMA_OFFSET + 0x50)
-#define MTK_TX_MAX_CNT3		(MTK_PDMA_OFFSET + 0x54)
-#define MTK_TX_CTX_IDX3		(MTK_PDMA_OFFSET + 0x58)
-#define MTK_TX_DTX_IDX3		(MTK_PDMA_OFFSET + 0x5C)
-#define MTK_RX_BASE_PTR1	(MTK_PDMA_OFFSET + 0x60)
-#define MTK_RX_MAX_CNT1		(MTK_PDMA_OFFSET + 0x64)
-#define MTK_RX_CALC_IDX1	(MTK_PDMA_OFFSET + 0x68)
-#define MTK_RX_DRX_IDX1		(MTK_PDMA_OFFSET + 0x6C)
-
-/* Switch DMA configuration */
-#define RT5350_SDM_CFG		(RT5350_SDM_OFFSET + 0x00)
-#define RT5350_SDM_RRING	(RT5350_SDM_OFFSET + 0x04)
-#define RT5350_SDM_TRING	(RT5350_SDM_OFFSET + 0x08)
-#define RT5350_SDM_MAC_ADRL	(RT5350_SDM_OFFSET + 0x0C)
-#define RT5350_SDM_MAC_ADRH	(RT5350_SDM_OFFSET + 0x10)
-#define RT5350_SDM_TPCNT	(RT5350_SDM_OFFSET + 0x100)
-#define RT5350_SDM_TBCNT	(RT5350_SDM_OFFSET + 0x104)
-#define RT5350_SDM_RPCNT	(RT5350_SDM_OFFSET + 0x108)
-#define RT5350_SDM_RBCNT	(RT5350_SDM_OFFSET + 0x10C)
-#define RT5350_SDM_CS_ERR	(RT5350_SDM_OFFSET + 0x110)
-
-#define RT5350_SDM_ICS_EN	BIT(16)
-#define RT5350_SDM_TCS_EN	BIT(17)
-#define RT5350_SDM_UCS_EN	BIT(18)
-
-/* QDMA registers */
-#define MTK_QTX_CFG(x)		(0x1800 + (x * 0x10))
-#define MTK_QTX_SCH(x)		(0x1804 + (x * 0x10))
-#define MTK_QRX_BASE_PTR0	0x1900
-#define MTK_QRX_MAX_CNT0	0x1904
-#define MTK_QRX_CRX_IDX0	0x1908
-#define MTK_QRX_DRX_IDX0	0x190C
-#define MTK_QDMA_GLO_CFG	0x1A04
-#define MTK_QDMA_RST_IDX	0x1A08
-#define MTK_QDMA_DELAY_INT	0x1A0C
-#define MTK_QDMA_FC_THRES	0x1A10
-#define MTK_QMTK_INT_STATUS	0x1A18
-#define MTK_QMTK_INT_ENABLE	0x1A1C
-#define MTK_QDMA_HRED2		0x1A44
-
-#define MTK_QTX_CTX_PTR		0x1B00
-#define MTK_QTX_DTX_PTR		0x1B04
-
-#define MTK_QTX_CRX_PTR		0x1B10
-#define MTK_QTX_DRX_PTR		0x1B14
-
-#define MTK_QDMA_FQ_HEAD	0x1B20
-#define MTK_QDMA_FQ_TAIL	0x1B24
-#define MTK_QDMA_FQ_CNT		0x1B28
-#define MTK_QDMA_FQ_BLEN	0x1B2C
-
-#define QDMA_PAGE_SIZE		2048
-#define QDMA_TX_OWNER_CPU	BIT(31)
-#define QDMA_TX_SWC		BIT(14)
-#define TX_QDMA_SDL(_x)		(((_x) & 0x3fff) << 16)
-#define QDMA_RES_THRES		4
-
-/* MDIO_CFG register bits */
-#define MTK_MDIO_CFG_AUTO_POLL_EN	BIT(29)
-#define MTK_MDIO_CFG_GP1_BP_EN		BIT(16)
-#define MTK_MDIO_CFG_GP1_FRC_EN		BIT(15)
-#define MTK_MDIO_CFG_GP1_SPEED_10	(0 << 13)
-#define MTK_MDIO_CFG_GP1_SPEED_100	(1 << 13)
-#define MTK_MDIO_CFG_GP1_SPEED_1000	(2 << 13)
-#define MTK_MDIO_CFG_GP1_DUPLEX		BIT(12)
-#define MTK_MDIO_CFG_GP1_FC_TX		BIT(11)
-#define MTK_MDIO_CFG_GP1_FC_RX		BIT(10)
-#define MTK_MDIO_CFG_GP1_LNK_DWN	BIT(9)
-#define MTK_MDIO_CFG_GP1_AN_FAIL	BIT(8)
-#define MTK_MDIO_CFG_MDC_CLK_DIV_1	(0 << 6)
-#define MTK_MDIO_CFG_MDC_CLK_DIV_2	(1 << 6)
-#define MTK_MDIO_CFG_MDC_CLK_DIV_4	(2 << 6)
-#define MTK_MDIO_CFG_MDC_CLK_DIV_8	(3 << 6)
-#define MTK_MDIO_CFG_TURBO_MII_FREQ	BIT(5)
-#define MTK_MDIO_CFG_TURBO_MII_MODE	BIT(4)
-#define MTK_MDIO_CFG_RX_CLK_SKEW_0	(0 << 2)
-#define MTK_MDIO_CFG_RX_CLK_SKEW_200	(1 << 2)
-#define MTK_MDIO_CFG_RX_CLK_SKEW_400	(2 << 2)
-#define MTK_MDIO_CFG_RX_CLK_SKEW_INV	(3 << 2)
-#define MTK_MDIO_CFG_TX_CLK_SKEW_0	0
-#define MTK_MDIO_CFG_TX_CLK_SKEW_200	1
-#define MTK_MDIO_CFG_TX_CLK_SKEW_400	2
-#define MTK_MDIO_CFG_TX_CLK_SKEW_INV	3
-
-/* uni-cast port */
-#define MTK_GDM1_JMB_LEN_MASK	0xf
-#define MTK_GDM1_JMB_LEN_SHIFT	28
-#define MTK_GDM1_ICS_EN		BIT(22)
-#define MTK_GDM1_TCS_EN		BIT(21)
-#define MTK_GDM1_UCS_EN		BIT(20)
-#define MTK_GDM1_JMB_EN		BIT(19)
-#define MTK_GDM1_STRPCRC	BIT(16)
-#define MTK_GDM1_UFRC_P_CPU	(0 << 12)
-#define MTK_GDM1_UFRC_P_GDMA1	(1 << 12)
-#define MTK_GDM1_UFRC_P_PPE	(6 << 12)
-
-/* checksums */
-#define MTK_ICS_GEN_EN		BIT(2)
-#define MTK_UCS_GEN_EN		BIT(1)
-#define MTK_TCS_GEN_EN		BIT(0)
-
-/* dma mode */
-#define MTK_PDMA		BIT(0)
-#define MTK_QDMA		BIT(1)
-#define MTK_PDMA_RX_QDMA_TX	(MTK_PDMA | MTK_QDMA)
-
-/* dma ring */
-#define MTK_PST_DRX_IDX0	BIT(16)
-#define MTK_PST_DTX_IDX3	BIT(3)
-#define MTK_PST_DTX_IDX2	BIT(2)
-#define MTK_PST_DTX_IDX1	BIT(1)
-#define MTK_PST_DTX_IDX0	BIT(0)
-
-#define MTK_RX_2B_OFFSET	BIT(31)
-#define MTK_TX_WB_DDONE		BIT(6)
-#define MTK_RX_DMA_BUSY		BIT(3)
-#define MTK_TX_DMA_BUSY		BIT(1)
-#define MTK_RX_DMA_EN		BIT(2)
-#define MTK_TX_DMA_EN		BIT(0)
-
-#define MTK_PDMA_SIZE_4DWORDS	(0 << 4)
-#define MTK_PDMA_SIZE_8DWORDS	(1 << 4)
-#define MTK_PDMA_SIZE_16DWORDS	(2 << 4)
-
-#define MTK_US_CYC_CNT_MASK	0xff
-#define MTK_US_CYC_CNT_SHIFT	0x8
-#define MTK_US_CYC_CNT_DIVISOR	1000000
-
-/* PDMA descriptor rxd2 */
-#define RX_DMA_DONE		BIT(31)
-#define RX_DMA_LSO		BIT(30)
-#define RX_DMA_PLEN0(_x)	(((_x) & 0x3fff) << 16)
-#define RX_DMA_GET_PLEN0(_x)	(((_x) >> 16) & 0x3fff)
-#define RX_DMA_TAG		BIT(15)
-
-/* PDMA descriptor rxd3 */
-#define RX_DMA_TPID(_x)		(((_x) >> 16) & 0xffff)
-#define RX_DMA_VID(_x)		((_x) & 0xfff)
-
-/* PDMA descriptor rxd4 */
-#define RX_DMA_L4VALID		BIT(30)
-#define RX_DMA_FPORT_SHIFT	19
-#define RX_DMA_FPORT_MASK	0x7
-
-struct mtk_rx_dma {
-	unsigned int rxd1;
-	unsigned int rxd2;
-	unsigned int rxd3;
-	unsigned int rxd4;
-} __packed __aligned(4);
-
-/* PDMA tx descriptor bits */
-#define TX_DMA_BUF_LEN		0x3fff
-#define TX_DMA_PLEN0_MASK	(TX_DMA_BUF_LEN << 16)
-#define TX_DMA_PLEN0(_x)	(((_x) & TX_DMA_BUF_LEN) << 16)
-#define TX_DMA_PLEN1(_x)	((_x) & TX_DMA_BUF_LEN)
-#define TX_DMA_GET_PLEN0(_x)    (((_x) >> 16) & TX_DMA_BUF_LEN)
-#define TX_DMA_GET_PLEN1(_x)    ((_x) & TX_DMA_BUF_LEN)
-#define TX_DMA_LS1		BIT(14)
-#define TX_DMA_LS0		BIT(30)
-#define TX_DMA_DONE		BIT(31)
-#define TX_DMA_FPORT_SHIFT	25
-#define TX_DMA_FPORT_MASK	0x7
-#define TX_DMA_INS_VLAN_MT7621	BIT(16)
-#define TX_DMA_INS_VLAN		BIT(7)
-#define TX_DMA_INS_PPPOE	BIT(12)
-#define TX_DMA_TAG		BIT(15)
-#define TX_DMA_TAG_MASK		BIT(15)
-#define TX_DMA_QN(_x)		((_x) << 16)
-#define TX_DMA_PN(_x)		((_x) << 24)
-#define TX_DMA_QN_MASK		TX_DMA_QN(0x7)
-#define TX_DMA_PN_MASK		TX_DMA_PN(0x7)
-#define TX_DMA_UDF		BIT(20)
-#define TX_DMA_CHKSUM		(0x7 << 29)
-#define TX_DMA_TSO		BIT(28)
-#define TX_DMA_DESP4_DEF	(TX_DMA_QN(3) | TX_DMA_PN(1))
-
-/* frame engine counters */
-#define MTK_PPE_AC_BCNT0	(MTK_CMTABLE_OFFSET + 0x00)
-#define MTK_GDMA1_TX_GBCNT	(MTK_CMTABLE_OFFSET + 0x300)
-#define MTK_GDMA2_TX_GBCNT	(MTK_GDMA1_TX_GBCNT + 0x40)
-
-/* phy device flags */
-#define MTK_PHY_FLAG_PORT	BIT(0)
-#define MTK_PHY_FLAG_ATTACH	BIT(1)
-
-struct mtk_tx_dma {
-	unsigned int txd1;
-	unsigned int txd2;
-	unsigned int txd3;
-	unsigned int txd4;
-} __packed __aligned(4);
-
-struct mtk_eth;
-struct mtk_mac;
-
-/* manage the attached phys */
-struct mtk_phy {
-	spinlock_t		lock;
-
-	struct phy_device	*phy[8];
-	struct device_node	*phy_node[8];
-	const __be32		*phy_fixed[8];
-	int			duplex[8];
-	int			speed[8];
-	int			tx_fc[8];
-	int			rx_fc[8];
-	int (*connect)(struct mtk_mac *mac);
-	void (*disconnect)(struct mtk_mac *mac);
-	void (*start)(struct mtk_mac *mac);
-	void (*stop)(struct mtk_mac *mac);
-};
-
-/* struct mtk_soc_data - the structure that holds the SoC specific data
- * @reg_table:		Some of the legacy registers changed their location
- *			over time. Their offsets are stored in this table
- *
- * @init_data:		Some features depend on the silicon revision. This
- *			callback allows runtime modification of the content of
- *			this struct
- * @reset_fe:		This callback is used to trigger the reset of the frame
- *			engine
- * @set_mac:		This callback is used to set the unicast mac address
- *			filter
- * @fwd_config:		This callback is used to setup the forward config
- *			register of the MAC
- * @switch_init:	This callback is used to bring up the switch core
- * @port_init:		Some SoCs have ports that can be router to a switch port
- *			or an external PHY. This callback is used to setup these
- *			ports.
- * @has_carrier:	This callback allows driver to check if there is a cable
- *			attached.
- * @mdio_init:		This callbck is used to setup the MDIO bus if one is
- *			present
- * @mdio_cleanup:	This callback is used to cleanup the MDIO state.
- * @mdio_write:		This callback is used to write data to the MDIO bus.
- * @mdio_read:		This callback is used to write data to the MDIO bus.
- * @mdio_adjust_link:	This callback is used to apply the PHY settings.
- * @piac_offset:	the PIAC register has a different different base offset
- * @hw_features:	feature set depends on the SoC type
- * @dma_ring_size:	allow GBit SoCs to set bigger rings than FE SoCs
- * @napi_weight:	allow GBit SoCs to set bigger napi weight than FE SoCs
- * @dma_type:		SoCs is PDMA, QDMA or a mix of the 2
- * @pdma_glo_cfg:	the default DMA configuration
- * @rx_int:		the TX interrupt bits used by the SoC
- * @tx_int:		the TX interrupt bits used by the SoC
- * @status_int:		the Status interrupt bits used by the SoC
- * @checksum_bit:	the bits used to turn on HW checksumming
- * @txd4:		default value of the TXD4 descriptor
- * @mac_count:		the number of MACs that the SoC has
- * @new_stats:		there is a old and new way to read hardware stats
- *			registers
- * @jumbo_frame:	does the SoC support jumbo frames ?
- * @rx_2b_offset:	tell the rx dma to offset the data by 2 bytes
- * @rx_sg_dma:		scatter gather support
- * @padding_64b		enable 64 bit padding
- * @padding_bug:	rt2880 has a padding bug
- * @has_switch:		does the SoC have a built-in switch
- *
- * Although all of the supported SoCs share the same basic functionality, there
- * are several SoC specific functions and features that we need to support. This
- * struct holds the SoC specific data so that the common core can figure out
- * how to setup and use these differences.
- */
-struct mtk_soc_data {
-	const u16 *reg_table;
-
-	void (*init_data)(struct mtk_soc_data *data, struct net_device *netdev);
-	void (*reset_fe)(struct mtk_eth *eth);
-	void (*set_mac)(struct mtk_mac *mac, unsigned char *macaddr);
-	int (*fwd_config)(struct mtk_eth *eth);
-	int (*switch_init)(struct mtk_eth *eth);
-	void (*port_init)(struct mtk_eth *eth, struct mtk_mac *mac,
-			  struct device_node *port);
-	int (*has_carrier)(struct mtk_eth *eth);
-	int (*mdio_init)(struct mtk_eth *eth);
-	void (*mdio_cleanup)(struct mtk_eth *eth);
-	int (*mdio_write)(struct mii_bus *bus, int phy_addr, int phy_reg,
-			  u16 val);
-	int (*mdio_read)(struct mii_bus *bus, int phy_addr, int phy_reg);
-	void (*mdio_adjust_link)(struct mtk_eth *eth, int port);
-	u32 piac_offset;
-	netdev_features_t hw_features;
-	u32 dma_ring_size;
-	u32 napi_weight;
-	u32 dma_type;
-	u32 pdma_glo_cfg;
-	u32 rx_int;
-	u32 tx_int;
-	u32 status_int;
-	u32 checksum_bit;
-	u32 txd4;
-	u32 mac_count;
-
-	u32 new_stats:1;
-	u32 jumbo_frame:1;
-	u32 rx_2b_offset:1;
-	u32 rx_sg_dma:1;
-	u32 padding_64b:1;
-	u32 padding_bug:1;
-	u32 has_switch:1;
-};
-
-#define MTK_STAT_OFFSET			0x40
-
-/* struct mtk_hw_stats - the structure that holds the traffic statistics.
- * @stats_lock:		make sure that stats operations are atomic
- * @reg_offset:		the status register offset of the SoC
- * @syncp:		the refcount
- *
- * All of the supported SoCs have hardware counters for traffic statstics.
- * Whenever the status IRQ triggers we can read the latest stats from these
- * counters and store them in this struct.
- */
-struct mtk_hw_stats {
-	spinlock_t stats_lock;
-	u32 reg_offset;
-	struct u64_stats_sync syncp;
-
-	u64 tx_bytes;
-	u64 tx_packets;
-	u64 tx_skip;
-	u64 tx_collisions;
-	u64 rx_bytes;
-	u64 rx_packets;
-	u64 rx_overflow;
-	u64 rx_fcs_errors;
-	u64 rx_short_errors;
-	u64 rx_long_errors;
-	u64 rx_checksum_errors;
-	u64 rx_flow_control_packets;
-};
-
-/* PDMA descriptor can point at 1-2 segments. This enum allows us to track how
- * memory was allocated so that it can be freed properly
- */
-enum mtk_tx_flags {
-	MTK_TX_FLAGS_SINGLE0	= 0x01,
-	MTK_TX_FLAGS_PAGE0	= 0x02,
-	MTK_TX_FLAGS_PAGE1	= 0x04,
-};
-
-/* struct mtk_tx_buf -	This struct holds the pointers to the memory pointed at
- *			by the TX descriptor	s
- * @skb:		The SKB pointer of the packet being sent
- * @dma_addr0:		The base addr of the first segment
- * @dma_len0:		The length of the first segment
- * @dma_addr1:		The base addr of the second segment
- * @dma_len1:		The length of the second segment
- */
-struct mtk_tx_buf {
-	struct sk_buff *skb;
-	u32 flags;
-	DEFINE_DMA_UNMAP_ADDR(dma_addr0);
-	DEFINE_DMA_UNMAP_LEN(dma_len0);
-	DEFINE_DMA_UNMAP_ADDR(dma_addr1);
-	DEFINE_DMA_UNMAP_LEN(dma_len1);
-};
-
-/* struct mtk_tx_ring -	This struct holds info describing a TX ring
- * @tx_dma:		The descriptor ring
- * @tx_buf:		The memory pointed at by the ring
- * @tx_phys:		The physical addr of tx_buf
- * @tx_next_free:	Pointer to the next free descriptor
- * @tx_last_free:	Pointer to the last free descriptor
- * @tx_thresh:		The threshold of minimum amount of free descriptors
- * @tx_map:		Callback to map a new packet into the ring
- * @tx_poll:		Callback for the housekeeping function
- * @tx_clean:		Callback for the cleanup function
- * @tx_ring_size:	How many descriptors are in the ring
- * @tx_free_idx:	The index of th next free descriptor
- * @tx_next_idx:	QDMA uses a linked list. This element points to the next
- *			free descriptor in the list
- * @tx_free_count:	QDMA uses a linked list. Track how many free descriptors
- *			are present
- */
-struct mtk_tx_ring {
-	struct mtk_tx_dma *tx_dma;
-	struct mtk_tx_buf *tx_buf;
-	dma_addr_t tx_phys;
-	struct mtk_tx_dma *tx_next_free;
-	struct mtk_tx_dma *tx_last_free;
-	u16 tx_thresh;
-	int (*tx_map)(struct sk_buff *skb, struct net_device *dev, int tx_num,
-		      struct mtk_tx_ring *ring, bool gso);
-	int (*tx_poll)(struct mtk_eth *eth, int budget, bool *tx_again);
-	void (*tx_clean)(struct mtk_eth *eth);
-
-	/* PDMA only */
-	u16 tx_ring_size;
-	u16 tx_free_idx;
-
-	/* QDMA only */
-	u16 tx_next_idx;
-	atomic_t tx_free_count;
-};
-
-/* struct mtk_rx_ring -	This struct holds info describing a RX ring
- * @rx_dma:		The descriptor ring
- * @rx_data:		The memory pointed at by the ring
- * @trx_phys:		The physical addr of rx_buf
- * @rx_ring_size:	How many descriptors are in the ring
- * @rx_buf_size:	The size of each packet buffer
- * @rx_calc_idx:	The current head of ring
- */
-struct mtk_rx_ring {
-	struct mtk_rx_dma *rx_dma;
-	u8 **rx_data;
-	dma_addr_t rx_phys;
-	u16 rx_ring_size;
-	u16 frag_size;
-	u16 rx_buf_size;
-	u16 rx_calc_idx;
-};
-
-/* currently no SoC has more than 2 macs */
-#define MTK_MAX_DEVS			2
-
-/* struct mtk_eth -	This is the main datasructure for holding the state
- *			of the driver
- * @dev:		The device pointer
- * @base:		The mapped register i/o base
- * @page_lock:		Make sure that register operations are atomic
- * @soc:		pointer to our SoC specific data
- * @dummy_dev:		we run 2 netdevs on 1 physical DMA ring and need a
- *			dummy for NAPI to work
- * @netdev:		The netdev instances
- * @mac:		Each netdev is linked to a physical MAC
- * @switch_np:		The phandle for the switch
- * @irq:		The IRQ that we are using
- * @msg_enable:		Ethtool msg level
- * @ysclk:		The sysclk rate - neeed for calibration
- * @ethsys:		The register map pointing at the range used to setup
- *			MII modes
- * @dma_refcnt:		track how many netdevs are using the DMA engine
- * @tx_ring:		Pointer to the memore holding info about the TX ring
- * @rx_ring:		Pointer to the memore holding info about the RX ring
- * @rx_napi:		The NAPI struct
- * @scratch_ring:	Newer SoCs need memory for a second HW managed TX ring
- * @scratch_head:	The scratch memory that scratch_ring points to.
- * @phy:		Info about the attached PHYs
- * @mii_bus:		If there is a bus we need to create an instance for it
- * @link:		Track if the ports have a physical link
- * @sw_priv:		Pointer to the switches private data
- * @vlan_map:		RX VID tracking
- */
-
-struct mtk_eth {
-	struct device			*dev;
-	void __iomem			*base;
-	spinlock_t			page_lock;
-	struct mtk_soc_data		*soc;
-	struct net_device		dummy_dev;
-	struct net_device		*netdev[MTK_MAX_DEVS];
-	struct mtk_mac			*mac[MTK_MAX_DEVS];
-	struct device_node		*switch_np;
-	int				irq;
-	u32				msg_enable;
-	unsigned long			sysclk;
-	struct regmap			*ethsys;
-	atomic_t			dma_refcnt;
-	struct mtk_tx_ring		tx_ring;
-	struct mtk_rx_ring		rx_ring[2];
-	struct napi_struct		rx_napi;
-	struct mtk_tx_dma		*scratch_ring;
-	void				*scratch_head;
-	struct mtk_phy			*phy;
-	struct mii_bus			*mii_bus;
-	int				link[8];
-	void				*sw_priv;
-	unsigned long			vlan_map;
-};
-
-/* struct mtk_mac -	the structure that holds the info about the MACs of the
- *			SoC
- * @id:			The number of the MAC
- * @of_node:		Our devicetree node
- * @hw:			Backpointer to our main datastruture
- * @hw_stats:		Packet statistics counter
- * @phy_dev:		The attached PHY if available
- * @phy_flags:		The PHYs flags
- * @pending_work:	The workqueue used to reset the dma ring
- */
-struct mtk_mac {
-	int				id;
-	struct device_node		*of_node;
-	struct mtk_eth			*hw;
-	struct mtk_hw_stats		*hw_stats;
-	struct phy_device		*phy_dev;
-	u32				phy_flags;
-	struct work_struct		pending_work;
-};
-
-/* the struct describing the SoC. these are declared in the soc_xyz.c files */
-extern const struct of_device_id of_mtk_match[];
-
-/* read the hardware status register */
-void mtk_stats_update_mac(struct mtk_mac *mac);
-
-/* default checksum setup handler */
-void mtk_reset(struct mtk_eth *eth, u32 reset_bits);
-
-/* register i/o wrappers */
-void mtk_w32(struct mtk_eth *eth, u32 val, unsigned int reg);
-u32 mtk_r32(struct mtk_eth *eth, unsigned int reg);
-
-/* default clock calibration handler */
-int mtk_set_clock_cycle(struct mtk_eth *eth);
-
-/* default checksum setup handler */
-void mtk_csum_config(struct mtk_eth *eth);
-
-/* default forward config handler */
-void mtk_fwd_config(struct mtk_eth *eth);
-
-#endif /* MTK_ETH_H */

drivers/staging/mt7621-eth/soc_mt7621.c

-/*   This program is free software; you can redistribute it and/or modify
- *   it under the terms of the GNU General Public License as published by
- *   the Free Software Foundation; version 2 of the License
- *
- *   This program is distributed in the hope that it will be useful,
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *   GNU General Public License for more details.
- *
- *   Copyright (C) 2009-2016 John Crispin <blogic@openwrt.org>
- *   Copyright (C) 2009-2016 Felix Fietkau <nbd@openwrt.org>
- *   Copyright (C) 2013-2016 Michael Lee <igvtee@gmail.com>
- */
-
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/if_vlan.h>
-#include <linux/of_net.h>
-
-#include <asm/mach-ralink/ralink_regs.h>
-
-#include "mtk_eth_soc.h"
-#include "gsw_mt7620.h"
-#include "mdio.h"
-
-#define MT7620_CDMA_CSG_CFG	0x400
-#define MT7621_CDMP_IG_CTRL	(MT7620_CDMA_CSG_CFG + 0x00)
-#define MT7621_CDMP_EG_CTRL	(MT7620_CDMA_CSG_CFG + 0x04)
-#define MT7621_RESET_FE		BIT(6)
-#define MT7621_L4_VALID		BIT(24)
-
-#define MT7621_TX_DMA_UDF	BIT(19)
-
-#define CDMA_ICS_EN		BIT(2)
-#define CDMA_UCS_EN		BIT(1)
-#define CDMA_TCS_EN		BIT(0)
-
-#define GDMA_ICS_EN		BIT(22)
-#define GDMA_TCS_EN		BIT(21)
-#define GDMA_UCS_EN		BIT(20)
-
-/* frame engine counters */
-#define MT7621_REG_MIB_OFFSET	0x2000
-#define MT7621_PPE_AC_BCNT0	(MT7621_REG_MIB_OFFSET + 0x00)
-#define MT7621_GDM1_TX_GBCNT	(MT7621_REG_MIB_OFFSET + 0x400)
-#define MT7621_GDM2_TX_GBCNT	(MT7621_GDM1_TX_GBCNT + 0x40)
-
-#define GSW_REG_GDMA1_MAC_ADRL	0x508
-#define GSW_REG_GDMA1_MAC_ADRH	0x50C
-#define GSW_REG_GDMA2_MAC_ADRL	0x1508
-#define GSW_REG_GDMA2_MAC_ADRH	0x150C
-
-#define MT7621_MTK_RST_GL	0x04
-#define MT7620_MTK_INT_STATUS2	0x08
-
-/* MTK_INT_STATUS reg on mt7620 define CNT_GDM1_AF at BIT(29)
- * but after test it should be BIT(13).
- */
-#define MT7621_MTK_GDM1_AF	BIT(28)
-#define MT7621_MTK_GDM2_AF	BIT(29)
-
-static const u16 mt7621_reg_table[MTK_REG_COUNT] = {
-	[MTK_REG_PDMA_GLO_CFG] = RT5350_PDMA_GLO_CFG,
-	[MTK_REG_PDMA_RST_CFG] = RT5350_PDMA_RST_CFG,
-	[MTK_REG_DLY_INT_CFG] = RT5350_DLY_INT_CFG,
-	[MTK_REG_TX_BASE_PTR0] = RT5350_TX_BASE_PTR0,
-	[MTK_REG_TX_MAX_CNT0] = RT5350_TX_MAX_CNT0,
-	[MTK_REG_TX_CTX_IDX0] = RT5350_TX_CTX_IDX0,
-	[MTK_REG_TX_DTX_IDX0] = RT5350_TX_DTX_IDX0,
-	[MTK_REG_RX_BASE_PTR0] = RT5350_RX_BASE_PTR0,
-	[MTK_REG_RX_MAX_CNT0] = RT5350_RX_MAX_CNT0,
-	[MTK_REG_RX_CALC_IDX0] = RT5350_RX_CALC_IDX0,
-	[MTK_REG_RX_DRX_IDX0] = RT5350_RX_DRX_IDX0,
-	[MTK_REG_MTK_INT_ENABLE] = RT5350_MTK_INT_ENABLE,
-	[MTK_REG_MTK_INT_STATUS] = RT5350_MTK_INT_STATUS,
-	[MTK_REG_MTK_DMA_VID_BASE] = 0,
-	[MTK_REG_MTK_COUNTER_BASE] = MT7621_GDM1_TX_GBCNT,
-	[MTK_REG_MTK_RST_GL] = MT7621_MTK_RST_GL,
-	[MTK_REG_MTK_INT_STATUS2] = MT7620_MTK_INT_STATUS2,
-};
-
-static void mt7621_mtk_reset(struct mtk_eth *eth)
-{
-	mtk_reset(eth, MT7621_RESET_FE);
-}
-
-static int mt7621_fwd_config(struct mtk_eth *eth)
-{
-	/* Setup GMAC1 only, there is no support for GMAC2 yet */
-	mtk_w32(eth, mtk_r32(eth, MT7620_GDMA1_FWD_CFG) & ~0xffff,
-		MT7620_GDMA1_FWD_CFG);
-
-	/* Enable RX checksum */
-	mtk_w32(eth, mtk_r32(eth, MT7620_GDMA1_FWD_CFG) | (GDMA_ICS_EN |
-		       GDMA_TCS_EN | GDMA_UCS_EN),
-		       MT7620_GDMA1_FWD_CFG);
-
-	/* Enable RX VLan Offloading */
-	mtk_w32(eth, 0, MT7621_CDMP_EG_CTRL);
-
-	return 0;
-}
-
-static void mt7621_set_mac(struct mtk_mac *mac, unsigned char *hwaddr)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&mac->hw->page_lock, flags);
-	if (mac->id == 0) {
-		mtk_w32(mac->hw, (hwaddr[0] << 8) | hwaddr[1],
-			GSW_REG_GDMA1_MAC_ADRH);
-		mtk_w32(mac->hw, (hwaddr[2] << 24) | (hwaddr[3] << 16) |
-			(hwaddr[4] << 8) | hwaddr[5],
-			GSW_REG_GDMA1_MAC_ADRL);
-	}
-	if (mac->id == 1) {
-		mtk_w32(mac->hw, (hwaddr[0] << 8) | hwaddr[1],
-			GSW_REG_GDMA2_MAC_ADRH);
-		mtk_w32(mac->hw, (hwaddr[2] << 24) | (hwaddr[3] << 16) |
-			(hwaddr[4] << 8) | hwaddr[5],
-			GSW_REG_GDMA2_MAC_ADRL);
-	}
-	spin_unlock_irqrestore(&mac->hw->page_lock, flags);
-}
-
-static struct mtk_soc_data mt7621_data = {
-	.hw_features = NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
-		       NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
-		       NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 |
-		       NETIF_F_IPV6_CSUM,
-	.dma_type = MTK_PDMA,
-	.dma_ring_size = 256,
-	.napi_weight = 64,
-	.new_stats = 1,
-	.padding_64b = 1,
-	.rx_2b_offset = 1,
-	.rx_sg_dma = 1,
-	.has_switch = 1,
-	.mac_count = 2,
-	.reset_fe = mt7621_mtk_reset,
-	.set_mac = mt7621_set_mac,
-	.fwd_config = mt7621_fwd_config,
-	.switch_init = mtk_gsw_init,
-	.reg_table = mt7621_reg_table,
-	.pdma_glo_cfg = MTK_PDMA_SIZE_16DWORDS,
-	.rx_int = RT5350_RX_DONE_INT,
-	.tx_int = RT5350_TX_DONE_INT,
-	.status_int = MT7621_MTK_GDM1_AF | MT7621_MTK_GDM2_AF,
-	.checksum_bit = MT7621_L4_VALID,
-	.has_carrier = mt7620_has_carrier,
-	.mdio_read = mt7620_mdio_read,
-	.mdio_write = mt7620_mdio_write,
-	.mdio_adjust_link = mt7620_mdio_link_adjust,
-};
-
-const struct of_device_id of_mtk_match[] = {
-	{ .compatible = "mediatek,mt7621-eth", .data = &mt7621_data },
-	{},
-};
-
-MODULE_DEVICE_TABLE(of, of_mtk_match);

drivers/staging/mt7621-pci/Kconfig

 config PCI_MT7621
 	tristate "MediaTek MT7621 PCI Controller"
 	depends on RALINK
+	depends on PCI
 	select PCI_DRIVERS_GENERIC
 	help
 	  This selects a driver for the MediaTek MT7621 PCI Controller.

drivers/staging/octeon/ethernet-mdio.c

@@ -163,7 +163,7 @@ int cvm_oct_phy_setup_device(struct net_device *dev)
 		goto no_phy;
 
 	phydev = of_phy_connect(dev, phy_node, cvm_oct_adjust_link, 0,
-				PHY_INTERFACE_MODE_GMII);
+				priv->phy_mode);
 	of_node_put(phy_node);
 
 	if (!phydev)

drivers/staging/octeon/ethernet.c

@@ -653,14 +653,37 @@ static struct device_node *cvm_oct_node_for_port(struct device_node *pip,
 	return np;
 }
 
-static void cvm_set_rgmii_delay(struct device_node *np, int iface, int port)
+static void cvm_set_rgmii_delay(struct octeon_ethernet *priv, int iface,
+				int port)
 {
+	struct device_node *np = priv->of_node;
 	u32 delay_value;
+	bool rx_delay;
+	bool tx_delay;
 
-	if (!of_property_read_u32(np, "rx-delay", &delay_value))
+	/* By default, both RX/TX delay is enabled in
+	 * __cvmx_helper_rgmii_enable().
+	 */
+	rx_delay = true;
+	tx_delay = true;
+
+	if (!of_property_read_u32(np, "rx-delay", &delay_value)) {
 		cvmx_write_csr(CVMX_ASXX_RX_CLK_SETX(port, iface), delay_value);
-	if (!of_property_read_u32(np, "tx-delay", &delay_value))
+		rx_delay = delay_value > 0;
+	}
+	if (!of_property_read_u32(np, "tx-delay", &delay_value)) {
 		cvmx_write_csr(CVMX_ASXX_TX_CLK_SETX(port, iface), delay_value);
+		tx_delay = delay_value > 0;
+	}
+
+	if (!rx_delay && !tx_delay)
+		priv->phy_mode = PHY_INTERFACE_MODE_RGMII_ID;
+	else if (!rx_delay)
+		priv->phy_mode = PHY_INTERFACE_MODE_RGMII_RXID;
+	else if (!tx_delay)
+		priv->phy_mode = PHY_INTERFACE_MODE_RGMII_TXID;
+	else
+		priv->phy_mode = PHY_INTERFACE_MODE_RGMII;
 }
 
 static int cvm_oct_probe(struct platform_device *pdev)
@@ -825,6 +848,7 @@ static int cvm_oct_probe(struct platform_device *pdev)
 			priv->port = port;
 			priv->queue = cvmx_pko_get_base_queue(priv->port);
 			priv->fau = fau - cvmx_pko_get_num_queues(port) * 4;
+			priv->phy_mode = PHY_INTERFACE_MODE_NA;
 			for (qos = 0; qos < 16; qos++)
 				skb_queue_head_init(&priv->tx_free_list[qos]);
 			for (qos = 0; qos < cvmx_pko_get_num_queues(port);
@@ -856,6 +880,7 @@ static int cvm_oct_probe(struct platform_device *pdev)
 				break;
 
 			case CVMX_HELPER_INTERFACE_MODE_SGMII:
+				priv->phy_mode = PHY_INTERFACE_MODE_SGMII;
 				dev->netdev_ops = &cvm_oct_sgmii_netdev_ops;
 				strcpy(dev->name, "eth%d");
 				break;
@@ -865,11 +890,16 @@ static int cvm_oct_probe(struct platform_device *pdev)
 				strcpy(dev->name, "spi%d");
 				break;
 
-			case CVMX_HELPER_INTERFACE_MODE_RGMII:
 			case CVMX_HELPER_INTERFACE_MODE_GMII:
+				priv->phy_mode = PHY_INTERFACE_MODE_GMII;
+				dev->netdev_ops = &cvm_oct_rgmii_netdev_ops;
+				strcpy(dev->name, "eth%d");
+				break;
+
+			case CVMX_HELPER_INTERFACE_MODE_RGMII:
 				dev->netdev_ops = &cvm_oct_rgmii_netdev_ops;
 				strcpy(dev->name, "eth%d");
-				cvm_set_rgmii_delay(priv->of_node, interface,
+				cvm_set_rgmii_delay(priv, interface,
 						    port_index);
 				break;
 			}

drivers/staging/octeon/octeon-ethernet.h

@@ -12,7 +12,7 @@
 #define OCTEON_ETHERNET_H
 
 #include <linux/of.h>
-
+#include <linux/phy.h>
 #include <asm/octeon/cvmx-helper-board.h>
 
 /**
@@ -33,6 +33,8 @@ struct octeon_ethernet {
 	 * cvmx_helper_interface_mode_t
 	 */
 	int imode;
+	/* PHY mode */
+	phy_interface_t phy_mode;
 	/* List of outstanding tx buffers per queue */
 	struct sk_buff_head tx_free_list[16];
 	unsigned int last_speed;

drivers/staging/olpc_dcon/olpc_dcon_xo_1.c

@@ -45,7 +45,7 @@ static int dcon_init_xo_1(struct dcon_priv *dcon)
 {
 	unsigned char lob;
 	int ret, i;
-	struct dcon_gpio *pin = &gpios_asis[0];
+	const struct dcon_gpio *pin = &gpios_asis[0];
 
 	for (i = 0; i < ARRAY_SIZE(gpios_asis); i++) {
 		gpios[i] = devm_gpiod_get(&dcon->client->dev, pin[i].name,

drivers/staging/rtl8188eu/core/rtw_xmit.c

@@ -174,7 +174,9 @@ s32 _rtw_init_xmit_priv(struct xmit_priv *pxmitpriv, struct adapter *padapter)
 
 	pxmitpriv->free_xmit_extbuf_cnt = num_xmit_extbuf;
 
-	rtw_alloc_hwxmits(padapter);
+	res = rtw_alloc_hwxmits(padapter);
+	if (res == _FAIL)
+		goto exit;
 	rtw_init_hwxmits(pxmitpriv->hwxmits, pxmitpriv->hwxmit_entry);
 
 	for (i = 0; i < 4; i++)
@@ -1503,7 +1505,7 @@ s32 rtw_xmit_classifier(struct adapter *padapter, struct xmit_frame *pxmitframe)
 	return res;
 }
 
-void rtw_alloc_hwxmits(struct adapter *padapter)
+s32 rtw_alloc_hwxmits(struct adapter *padapter)
 {
 	struct hw_xmit *hwxmits;
 	struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
@@ -1512,6 +1514,8 @@ void rtw_alloc_hwxmits(struct adapter *padapter)
 
 	pxmitpriv->hwxmits = kcalloc(pxmitpriv->hwxmit_entry,
 				     sizeof(struct hw_xmit), GFP_KERNEL);
+	if (!pxmitpriv->hwxmits)
+		return _FAIL;
 
 	hwxmits = pxmitpriv->hwxmits;
 
@@ -1519,6 +1523,7 @@ void rtw_alloc_hwxmits(struct adapter *padapter)
 	hwxmits[1] .sta_queue = &pxmitpriv->vi_pending;
 	hwxmits[2] .sta_queue = &pxmitpriv->be_pending;
 	hwxmits[3] .sta_queue = &pxmitpriv->bk_pending;
+	return _SUCCESS;
 }
 
 void rtw_free_hwxmits(struct adapter *padapter)

drivers/staging/rtl8188eu/include/rtw_xmit.h

@@ -336,7 +336,7 @@ s32 rtw_txframes_sta_ac_pending(struct adapter *padapter,
 void rtw_init_hwxmits(struct hw_xmit *phwxmit, int entry);
 s32 _rtw_init_xmit_priv(struct xmit_priv *pxmitpriv, struct adapter *padapter);
 void _rtw_free_xmit_priv(struct xmit_priv *pxmitpriv);
-void rtw_alloc_hwxmits(struct adapter *padapter);
+s32 rtw_alloc_hwxmits(struct adapter *padapter);
 void rtw_free_hwxmits(struct adapter *padapter);
 s32 rtw_xmit(struct adapter *padapter, struct sk_buff **pkt);
 

drivers/staging/rtl8712/rtl8712_cmd.c

@@ -147,17 +147,9 @@ static u8 write_macreg_hdl(struct _adapter *padapter, u8 *pbuf)
 
 static u8 read_bbreg_hdl(struct _adapter *padapter, u8 *pbuf)
 {
-	u32 val;
-	void (*pcmd_callback)(struct _adapter *dev, struct cmd_obj	*pcmd);
 	struct cmd_obj *pcmd  = (struct cmd_obj *)pbuf;
 
-	if (pcmd->rsp && pcmd->rspsz > 0)
-		memcpy(pcmd->rsp, (u8 *)&val, pcmd->rspsz);
-	pcmd_callback = cmd_callback[pcmd->cmdcode].callback;
-	if (!pcmd_callback)
-		r8712_free_cmd_obj(pcmd);
-	else
-		pcmd_callback(padapter, pcmd);
+	r8712_free_cmd_obj(pcmd);
 	return H2C_SUCCESS;
 }
 

drivers/staging/rtl8712/rtl8712_cmd.h

@@ -140,7 +140,7 @@ enum rtl8712_h2c_cmd {
 static struct _cmd_callback	cmd_callback[] = {
 	{GEN_CMD_CODE(_Read_MACREG), NULL}, /*0*/
 	{GEN_CMD_CODE(_Write_MACREG), NULL},
-	{GEN_CMD_CODE(_Read_BBREG), &r8712_getbbrfreg_cmdrsp_callback},
+	{GEN_CMD_CODE(_Read_BBREG), NULL},
 	{GEN_CMD_CODE(_Write_BBREG), NULL},
 	{GEN_CMD_CODE(_Read_RFREG), &r8712_getbbrfreg_cmdrsp_callback},
 	{GEN_CMD_CODE(_Write_RFREG), NULL}, /*5*/

drivers/staging/rtl8723bs/core/rtw_xmit.c

@@ -260,7 +260,9 @@ s32 _rtw_init_xmit_priv(struct xmit_priv *pxmitpriv, struct adapter *padapter)
 		}
 	}
 
-	rtw_alloc_hwxmits(padapter);
+	res = rtw_alloc_hwxmits(padapter);
+	if (res == _FAIL)
+		goto exit;
 	rtw_init_hwxmits(pxmitpriv->hwxmits, pxmitpriv->hwxmit_entry);
 
 	for (i = 0; i < 4; i++) {
@@ -2144,7 +2146,7 @@ s32 rtw_xmit_classifier(struct adapter *padapter, struct xmit_frame *pxmitframe)
 	return res;
 }
 
-void rtw_alloc_hwxmits(struct adapter *padapter)
+s32 rtw_alloc_hwxmits(struct adapter *padapter)
 {
 	struct hw_xmit *hwxmits;
 	struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
@@ -2155,10 +2157,8 @@ void rtw_alloc_hwxmits(struct adapter *padapter)
 
 	pxmitpriv->hwxmits = rtw_zmalloc(sizeof(struct hw_xmit) * pxmitpriv->hwxmit_entry);
 
-	if (pxmitpriv->hwxmits == NULL) {
-		DBG_871X("alloc hwxmits fail!...\n");
-		return;
-	}
+	if (!pxmitpriv->hwxmits)
+		return _FAIL;
 
 	hwxmits = pxmitpriv->hwxmits;
 
@@ -2204,7 +2204,7 @@ void rtw_alloc_hwxmits(struct adapter *padapter)
 
 	}
 
-
+	return _SUCCESS;
 }
 
 void rtw_free_hwxmits(struct adapter *padapter)

drivers/staging/rtl8723bs/include/rtw_xmit.h

@@ -487,7 +487,7 @@ s32 _rtw_init_xmit_priv(struct xmit_priv *pxmitpriv, struct adapter *padapter);
 void _rtw_free_xmit_priv (struct xmit_priv *pxmitpriv);
 
 
-void rtw_alloc_hwxmits(struct adapter *padapter);
+s32 rtw_alloc_hwxmits(struct adapter *padapter);
 void rtw_free_hwxmits(struct adapter *padapter);
 
 

drivers/staging/rtlwifi/phydm/rtl_phydm.c

@@ -180,6 +180,8 @@ static int rtl_phydm_init_priv(struct rtl_priv *rtlpriv,
 
 	rtlpriv->phydm.internal =
 		kzalloc(sizeof(struct phy_dm_struct), GFP_KERNEL);
+	if (!rtlpriv->phydm.internal)
+		return 0;
 
 	_rtl_phydm_init_com_info(rtlpriv, ic, params);
 

drivers/staging/rtlwifi/rtl8822be/fw.c

@@ -743,6 +743,8 @@ void rtl8822be_set_fw_rsvdpagepkt(struct ieee80211_hw *hw, bool b_dl_finished)
 		      u1_rsvd_page_loc, 3);
 
 	skb = dev_alloc_skb(totalpacketlen);
+	if (!skb)
+		return;
 	memcpy((u8 *)skb_put(skb, totalpacketlen), &reserved_page_packet,
 	       totalpacketlen);
 

drivers/staging/speakup/speakup_soft.c

@@ -210,12 +210,15 @@ static ssize_t softsynthx_read(struct file *fp, char __user *buf, size_t count,
 		return -EINVAL;
 
 	spin_lock_irqsave(&speakup_info.spinlock, flags);
+	synth_soft.alive = 1;
 	while (1) {
 		prepare_to_wait(&speakup_event, &wait, TASK_INTERRUPTIBLE);
-		if (!unicode)
-			synth_buffer_skip_nonlatin1();
-		if (!synth_buffer_empty() || speakup_info.flushing)
-			break;
+		if (synth_current() == &synth_soft) {
+			if (!unicode)
+				synth_buffer_skip_nonlatin1();
+			if (!synth_buffer_empty() || speakup_info.flushing)
+				break;
+		}
 		spin_unlock_irqrestore(&speakup_info.spinlock, flags);
 		if (fp->f_flags & O_NONBLOCK) {
 			finish_wait(&speakup_event, &wait);
@@ -235,6 +238,8 @@ static ssize_t softsynthx_read(struct file *fp, char __user *buf, size_t count,
 
 	/* Keep 3 bytes available for a 16bit UTF-8-encoded character */
 	while (chars_sent <= count - bytes_per_ch) {
+		if (synth_current() != &synth_soft)
+			break;
 		if (speakup_info.flushing) {
 			speakup_info.flushing = 0;
 			ch = '\x18';
@@ -331,7 +336,8 @@ static __poll_t softsynth_poll(struct file *fp, struct poll_table_struct *wait)
 	poll_wait(fp, &speakup_event, wait);
 
 	spin_lock_irqsave(&speakup_info.spinlock, flags);
-	if (!synth_buffer_empty() || speakup_info.flushing)
+	if (synth_current() == &synth_soft &&
+	    (!synth_buffer_empty() || speakup_info.flushing))
 		ret = EPOLLIN | EPOLLRDNORM;
 	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
 	return ret;

drivers/staging/speakup/spk_priv.h

@@ -74,6 +74,7 @@ int synth_request_region(unsigned long start, unsigned long n);
 int synth_release_region(unsigned long start, unsigned long n);
 int synth_add(struct spk_synth *in_synth);
 void synth_remove(struct spk_synth *in_synth);
+struct spk_synth *synth_current(void);
 
 extern struct speakup_info_t speakup_info;
 

drivers/staging/speakup/synth.c

@@ -481,4 +481,10 @@ void synth_remove(struct spk_synth *in_synth)
 }
 EXPORT_SYMBOL_GPL(synth_remove);
 
+struct spk_synth *synth_current(void)
+{
+	return synth;
+}
+EXPORT_SYMBOL_GPL(synth_current);
+
 short spk_punc_masks[] = { 0, SOME, MOST, PUNC, PUNC | B_SYM };

drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c

@@ -3513,6 +3513,7 @@ static int vchiq_probe(struct platform_device *pdev)
 	struct device_node *fw_node;
 	const struct of_device_id *of_id;
 	struct vchiq_drvdata *drvdata;
+	struct device *vchiq_dev;
 	int err;
 
 	of_id = of_match_node(vchiq_of_match, pdev->dev.of_node);
@@ -3547,9 +3548,12 @@ static int vchiq_probe(struct platform_device *pdev)
 		goto failed_platform_init;
 	}
 
-	if (IS_ERR(device_create(vchiq_class, &pdev->dev, vchiq_devid,
-				 NULL, "vchiq")))
+	vchiq_dev = device_create(vchiq_class, &pdev->dev, vchiq_devid, NULL,
+				  "vchiq");
+	if (IS_ERR(vchiq_dev)) {
+		err = PTR_ERR(vchiq_dev);
 		goto failed_device_create;
+	}
 
 	vchiq_debugfs_init();
 

drivers/staging/vt6655/device_main.c

@@ -1033,8 +1033,6 @@ static void vnt_interrupt_process(struct vnt_private *priv)
 		return;
 	}
 
-	MACvIntDisable(priv->PortOffset);
-
 	spin_lock_irqsave(&priv->lock, flags);
 
 	/* Read low level stats */
@@ -1122,8 +1120,6 @@ static void vnt_interrupt_process(struct vnt_private *priv)
 	}
 
 	spin_unlock_irqrestore(&priv->lock, flags);
-
-	MACvIntEnable(priv->PortOffset, IMR_MASK_VALUE);
 }
 
 static void vnt_interrupt_work(struct work_struct *work)
@@ -1133,14 +1129,17 @@ static void vnt_interrupt_work(struct work_struct *work)
 
 	if (priv->vif)
 		vnt_interrupt_process(priv);
+
+	MACvIntEnable(priv->PortOffset, IMR_MASK_VALUE);
 }
 
 static irqreturn_t vnt_interrupt(int irq,  void *arg)
 {
 	struct vnt_private *priv = arg;
 
-	if (priv->vif)
-		schedule_work(&priv->interrupt_work);
+	schedule_work(&priv->interrupt_work);
+
+	MACvIntDisable(priv->PortOffset);
 
 	return IRQ_HANDLED;
 }