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Date: Thu, 11 Feb 2016 18:58:52 +0000
From: <Bryan.Whitehead@...rochip.com>
To: <davem@...emloft.net>
CC: <netdev@...r.kernel.org>
Subject: [PATCH net-next,V2] Add LAN9352 Ethernet Driver
This is the initial submission of an ethernet driver for
the Microchip LAN9352.
The LAN9352 is a 2-Port 10/100 Managed Ethernet Switch with
16-Bit Non-PCI CPU Interface. The CPU interface includes a basic
ethernet controller interface whose virtual phy is connected
internally to a 3rd port on the embedded switch.
This driver only operates as a simple ethernet controller
on the CPU interface. Since this interface is connected directly
to the embedded switch, the result is that traffic can be sent and
received on both physical ports.
Signed-off-by: Bryan Whitehead <Bryan.Whitehead@...rochip.com>
---
Documentation/devicetree/bindings/net/mchp9352.txt | 31 +
MAINTAINERS | 9 +
drivers/net/ethernet/microchip/Kconfig | 32 +-
drivers/net/ethernet/microchip/Makefile | 1 +
drivers/net/ethernet/microchip/mchp9352.c | 2587 ++++++++++++++++++++
drivers/net/ethernet/microchip/mchp9352.h | 443 ++++
6 files changed, 3102 insertions(+), 1 deletion(-)
create mode 100644 Documentation/devicetree/bindings/net/mchp9352.txt
create mode 100644 drivers/net/ethernet/microchip/mchp9352.c
create mode 100644 drivers/net/ethernet/microchip/mchp9352.h
diff --git a/Documentation/devicetree/bindings/net/mchp9352.txt b/Documentation/devicetree/bindings/net/mchp9352.txt
new file mode 100644
index 0000000..5b22e73
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/mchp9352.txt
@@ -0,0 +1,31 @@
+* Microchip LAN9352 Controller
+
+Required properties:
+- compatible : Should be "microchip,lan9352"
+- reg : Address and length of the io space for Microchip LAN
+- interrupts : Should contain Microchip LAN interrupt line
+- interrupt-parent : Should be the phandle for the interrupt controller
+ that services interrupts for this device
+- phy-mode : See ethernet.txt file in the same directory
+
+Optional properties:
+- reg-shift : Specify the quantity to shift the register offsets by
+- reg-io-width : Specify the size (in bytes) of the IO accesses that
+ should be performed on the device. Valid value for Microchip LAN is
+ 2 or 4. If it's omitted or invalid, the size would be 2.
+- microchip,irq-active-high : Indicates the IRQ polarity is active-high
+- microchip,irq-push-pull : Indicates the IRQ type is push-pull
+- microchip,save-mac-address : Indicates that mac address needs to be saved
+ before resetting the controller
+
+Examples:
+
+lan9220@...00000 {
+ compatible = "microchip,lan9352";
+ reg = <0xf4000000 0x2000000>;
+ phy-mode = "mii";
+ interrupt-parent = <&gpio1>;
+ interrupts = <31>;
+ reg-io-width = <4>;
+ microchip,irq-push-pull;
+};
diff --git a/MAINTAINERS b/MAINTAINERS
index f678c37..c39edef 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -7136,6 +7136,15 @@ T: git git://git.monstr.eu/linux-2.6-microblaze.git
S: Supported
F: arch/microblaze/
+MICROCHIP LAN9352 ETHERNET DRIVER
+M: Microchip Linux Driver Support <UNGLinuxDriver@...rochip.com>
+M: Bryan Whitehead <Bryan.Whitehead@...rochip.com>
+L: netdev@...r.kernel.org
+S: Maintained
+F: Documentation/devicetree/bindings/net/mchp9352.txt
+F: drivers/net/ethernet/microchip/mchp9352.h
+F: drivers/net/ethernet/microchip/mchp9352.c
+
MICROSOFT SURFACE PRO 3 BUTTON DRIVER
M: Chen Yu <yu.c.chen@...el.com>
L: platform-driver-x86@...r.kernel.org
diff --git a/drivers/net/ethernet/microchip/Kconfig b/drivers/net/ethernet/microchip/Kconfig
index 36a09d9..1f346a7 100644
--- a/drivers/net/ethernet/microchip/Kconfig
+++ b/drivers/net/ethernet/microchip/Kconfig
@@ -5,7 +5,6 @@
config NET_VENDOR_MICROCHIP
bool "Microchip devices"
default y
- depends on SPI
---help---
If you have a network (Ethernet) card belonging to this class, say Y.
@@ -28,6 +27,7 @@ config ENC28J60
config ENC28J60_WRITEVERIFY
bool "Enable write verify"
+ depends on SPI
depends on ENC28J60
---help---
Enable the verify after the buffer write useful for debugging purpose.
@@ -42,4 +42,34 @@ config ENCX24J600
To compile this driver as a module, choose M here. The module will be
called encx24j600.
+config MCHP9352
+ tristate "LAN9352 embedded ethernet support"
+ depends on HAS_IOMEM
+ select CRC32
+ select MII
+ select PHYLIB
+ ---help---
+ The LAN9352 is a 2-Port 10/100 Managed Ethernet Switch with
+ 16-Bit Non-PCI CPU Interface. The CPU interface includes a basic
+ ethernet controller interface whose virtual phy is connected
+ internally to a 3rd port on the embedded switch.
+
+ This driver only operates as a simple ethernet controller
+ on the CPU interface. Since this interface is connected directly
+ to the embedded switch, the result is that traffic can be sent and
+ received on both physical ports.
+
+ No managed switch features are yet supported by this driver.
+ 1588 features are not yet supported by this driver.
+
+ May support LAN9250, LAN9311, and LAN9312, but these products
+ were not tested.
+
+ Say Y here if you want support for MICROCHIP LAN9352 as a simple
+ ethernet controller.
+
+ To compile this driver as a module, choose M here. The module
+ will be called mchp9352.
+
+
endif # NET_VENDOR_MICROCHIP
diff --git a/drivers/net/ethernet/microchip/Makefile b/drivers/net/ethernet/microchip/Makefile
index ff78f62..6ce5296 100644
--- a/drivers/net/ethernet/microchip/Makefile
+++ b/drivers/net/ethernet/microchip/Makefile
@@ -4,3 +4,4 @@
obj-$(CONFIG_ENC28J60) += enc28j60.o
obj-$(CONFIG_ENCX24J600) += encx24j600.o encx24j600-regmap.o
+obj-$(CONFIG_MCHP9352) += mchp9352.o
diff --git a/drivers/net/ethernet/microchip/mchp9352.c b/drivers/net/ethernet/microchip/mchp9352.c
new file mode 100644
index 0000000..ccec25b
--- /dev/null
+++ b/drivers/net/ethernet/microchip/mchp9352.c
@@ -0,0 +1,2587 @@
+/***************************************************************************
+ *
+ * Copyright (C) 2004-2008 SMSC
+ * Copyright (C) 2005-2008 ARM
+ * Copyright (C) 2015-2016 MICROCHIP
+ *
+ * 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; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ ***************************************************************************
+ * This file was originally derived from ../smsc/smsc911x.c
+ * which was
+ *
+ * Rewritten, heavily based on smsc911x simple driver by SMSC.
+ * Partly uses io macros from smc91x.c by Nicolas Pitre
+ *
+ * Supported devices:
+ * LAN9352
+ *
+ * May support
+ * LAN9250, LAN9311, LAN9312
+ * But these devices were unable to be tested
+ *
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/crc32.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/consumer.h>
+#include <linux/sched.h>
+#include <linux/timer.h>
+#include <linux/bug.h>
+#include <linux/bitops.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+#include <linux/swab.h>
+#include <linux/phy.h>
+#include <linux/device.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
+#include <linux/of_net.h>
+#include <linux/acpi.h>
+#include <linux/pm_runtime.h>
+#include <linux/property.h>
+
+#include "mchp9352.h"
+
+#define MCHP_CHIPNAME "mchp9352"
+#define MCHP_MDIONAME "mchp9352-mdio"
+#define MCHP_DRV_VERSION "2016-01-25"
+
+MODULE_LICENSE("GPL");
+MODULE_VERSION(MCHP_DRV_VERSION);
+MODULE_ALIAS("platform:mchp9352");
+
+#if USE_DEBUG > 0
+static int debug = 16;
+#else
+static int debug = 3;
+#endif
+
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
+
+struct mchp9352_data;
+
+struct mchp9352_ops {
+ u32 (*reg_read)(struct mchp9352_data *pdata, u32 reg);
+ void (*reg_write)(struct mchp9352_data *pdata, u32 reg, u32 val);
+ void (*rx_readfifo)(struct mchp9352_data *pdata,
+ unsigned int *buf, unsigned int wordcount);
+ void (*tx_writefifo)(struct mchp9352_data *pdata,
+ unsigned int *buf, unsigned int wordcount);
+};
+
+#define MCHP9352_NUM_SUPPLIES 2
+
+struct mchp9352_data {
+ void __iomem *ioaddr;
+
+ unsigned int idrev;
+
+ /* device configuration (copied from platform_data during probe) */
+ struct mchp9352_platform_config config;
+
+ /* This needs to be acquired before calling any of below:
+ * mchp9352_mac_read(), mchp9352_mac_write()
+ */
+ spinlock_t mac_lock;
+
+ /* spinlock to ensure register accesses are serialised */
+ spinlock_t dev_lock;
+
+ struct phy_device *phy_dev;
+ struct mii_bus *mii_bus;
+ int phy_irq[PHY_MAX_ADDR];
+ int last_duplex;
+ int last_carrier;
+
+ u32 msg_enable;
+ unsigned int gpio_setting;
+ unsigned int gpio_orig_setting;
+ struct net_device *dev;
+ struct napi_struct napi;
+
+ unsigned int software_irq_signal;
+
+#define MIN_PACKET_SIZE (64)
+ char loopback_tx_pkt[MIN_PACKET_SIZE];
+ char loopback_rx_pkt[MIN_PACKET_SIZE];
+ unsigned int resetcount;
+
+ /* Members for Multicast filter workaround */
+ unsigned int multicast_update_pending;
+ unsigned int set_bits_mask;
+ unsigned int clear_bits_mask;
+ unsigned int hashhi;
+ unsigned int hashlo;
+
+ /* register access functions */
+ const struct mchp9352_ops *ops;
+
+ /* regulators */
+ struct regulator_bulk_data supplies[MCHP9352_NUM_SUPPLIES];
+
+ /* clock */
+ struct clk *clk;
+};
+
+/* Easy access to information */
+#define __mchp_shift(pdata, reg) ((reg) << ((pdata)->config.shift))
+
+static inline u32 __mchp9352_reg_read(struct mchp9352_data *pdata, u32 reg)
+{
+ if (pdata->config.flags & MCHP9352_USE_32BIT)
+ return readl(pdata->ioaddr + reg);
+
+ if (pdata->config.flags & MCHP9352_USE_16BIT)
+ return ((readw(pdata->ioaddr + reg) & 0xFFFF) |
+ ((readw(pdata->ioaddr + reg + 2) & 0xFFFF) << 16));
+
+ WARN_ON(1);
+ return 0;
+}
+
+static inline u32
+__mchp9352_reg_read_shift(struct mchp9352_data *pdata, u32 reg)
+{
+ if (pdata->config.flags & MCHP9352_USE_32BIT)
+ return readl(pdata->ioaddr + __mchp_shift(pdata, reg));
+
+ if (pdata->config.flags & MCHP9352_USE_16BIT)
+ return (readw(pdata->ioaddr +
+ __mchp_shift(pdata, reg)) & 0xFFFF) |
+ ((readw(pdata->ioaddr +
+ __mchp_shift(pdata, reg + 2)) & 0xFFFF) << 16);
+
+ WARN_ON(1);
+ return 0;
+}
+
+static inline u32 mchp9352_reg_read(struct mchp9352_data *pdata, u32 reg)
+{
+ u32 data;
+ unsigned long flags;
+
+ spin_lock_irqsave(&pdata->dev_lock, flags);
+ data = pdata->ops->reg_read(pdata, reg);
+ spin_unlock_irqrestore(&pdata->dev_lock, flags);
+
+ return data;
+}
+
+static inline void __mchp9352_reg_write(struct mchp9352_data *pdata, u32 reg,
+ u32 val)
+{
+ if (pdata->config.flags & MCHP9352_USE_32BIT) {
+ writel(val, pdata->ioaddr + reg);
+ return;
+ }
+
+ if (pdata->config.flags & MCHP9352_USE_16BIT) {
+ writew(val & 0xFFFF, pdata->ioaddr + reg);
+ writew((val >> 16) & 0xFFFF, pdata->ioaddr + reg + 2);
+ return;
+ }
+
+ WARN_ON(1);
+}
+
+static inline void
+__mchp9352_reg_write_shift(struct mchp9352_data *pdata, u32 reg, u32 val)
+{
+ if (pdata->config.flags & MCHP9352_USE_32BIT) {
+ writel(val, pdata->ioaddr + __mchp_shift(pdata, reg));
+ return;
+ }
+
+ if (pdata->config.flags & MCHP9352_USE_16BIT) {
+ writew(val & 0xFFFF,
+ pdata->ioaddr + __mchp_shift(pdata, reg));
+ writew((val >> 16) & 0xFFFF,
+ pdata->ioaddr + __mchp_shift(pdata, reg + 2));
+ return;
+ }
+
+ WARN_ON(1);
+}
+
+static inline void mchp9352_reg_write(struct mchp9352_data *pdata, u32 reg,
+ u32 val)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&pdata->dev_lock, flags);
+ pdata->ops->reg_write(pdata, reg, val);
+ spin_unlock_irqrestore(&pdata->dev_lock, flags);
+}
+
+/* Writes a packet to the TX_DATA_FIFO */
+static inline void
+mchp9352_tx_writefifo(struct mchp9352_data *pdata, unsigned int *buf,
+ unsigned int wordcount)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&pdata->dev_lock, flags);
+
+ if (pdata->config.flags & MCHP9352_SWAP_FIFO) {
+ while (wordcount--)
+ __mchp9352_reg_write(pdata, TX_DATA_FIFO,
+ swab32(*buf++));
+ goto out;
+ }
+
+ if (pdata->config.flags & MCHP9352_USE_32BIT) {
+ iowrite32_rep(pdata->ioaddr + TX_DATA_FIFO, buf, wordcount);
+ goto out;
+ }
+
+ if (pdata->config.flags & MCHP9352_USE_16BIT) {
+ while (wordcount--)
+ __mchp9352_reg_write(pdata, TX_DATA_FIFO, *buf++);
+ goto out;
+ }
+
+ WARN_ON(1);
+out:
+ spin_unlock_irqrestore(&pdata->dev_lock, flags);
+}
+
+/* Writes a packet to the TX_DATA_FIFO - shifted version */
+static inline void
+mchp9352_tx_writefifo_shift(struct mchp9352_data *pdata, unsigned int *buf,
+ unsigned int wordcount)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&pdata->dev_lock, flags);
+
+ if (pdata->config.flags & MCHP9352_SWAP_FIFO) {
+ while (wordcount--)
+ __mchp9352_reg_write_shift(pdata, TX_DATA_FIFO,
+ swab32(*buf++));
+ goto out;
+ }
+
+ if (pdata->config.flags & MCHP9352_USE_32BIT) {
+ iowrite32_rep(pdata->ioaddr +
+ __mchp_shift(pdata, TX_DATA_FIFO),
+ buf, wordcount);
+ goto out;
+ }
+
+ if (pdata->config.flags & MCHP9352_USE_16BIT) {
+ while (wordcount--)
+ __mchp9352_reg_write_shift(pdata,
+ TX_DATA_FIFO, *buf++);
+ goto out;
+ }
+
+ WARN_ON(1);
+out:
+ spin_unlock_irqrestore(&pdata->dev_lock, flags);
+}
+
+/* Reads a packet out of the RX_DATA_FIFO */
+static inline void
+mchp9352_rx_readfifo(struct mchp9352_data *pdata, unsigned int *buf,
+ unsigned int wordcount)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&pdata->dev_lock, flags);
+
+ if (pdata->config.flags & MCHP9352_SWAP_FIFO) {
+ while (wordcount--)
+ *buf++ = swab32(__mchp9352_reg_read(pdata,
+ RX_DATA_FIFO));
+ goto out;
+ }
+
+ if (pdata->config.flags & MCHP9352_USE_32BIT) {
+ ioread32_rep(pdata->ioaddr + RX_DATA_FIFO, buf, wordcount);
+ goto out;
+ }
+
+ if (pdata->config.flags & MCHP9352_USE_16BIT) {
+ while (wordcount--)
+ *buf++ = __mchp9352_reg_read(pdata, RX_DATA_FIFO);
+ goto out;
+ }
+
+ WARN_ON(1);
+out:
+ spin_unlock_irqrestore(&pdata->dev_lock, flags);
+}
+
+/* Reads a packet out of the RX_DATA_FIFO - shifted version */
+static inline void
+mchp9352_rx_readfifo_shift(struct mchp9352_data *pdata, unsigned int *buf,
+ unsigned int wordcount)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&pdata->dev_lock, flags);
+
+ if (pdata->config.flags & MCHP9352_SWAP_FIFO) {
+ while (wordcount--)
+ *buf++ = swab32(__mchp9352_reg_read_shift(pdata,
+ RX_DATA_FIFO));
+ goto out;
+ }
+
+ if (pdata->config.flags & MCHP9352_USE_32BIT) {
+ ioread32_rep(pdata->ioaddr +
+ __mchp_shift(pdata, RX_DATA_FIFO),
+ buf, wordcount);
+ goto out;
+ }
+
+ if (pdata->config.flags & MCHP9352_USE_16BIT) {
+ while (wordcount--)
+ *buf++ = __mchp9352_reg_read_shift(pdata,
+ RX_DATA_FIFO);
+ goto out;
+ }
+
+ WARN_ON(1);
+out:
+ spin_unlock_irqrestore(&pdata->dev_lock, flags);
+}
+
+/* enable regulator and clock resources. */
+static int mchp9352_enable_resources(struct platform_device *pdev)
+{
+ struct net_device *ndev = platform_get_drvdata(pdev);
+ struct mchp9352_data *pdata = netdev_priv(ndev);
+ int ret = 0;
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(pdata->supplies),
+ pdata->supplies);
+ if (ret)
+ netdev_err(ndev, "failed to enable regulators %d\n",
+ ret);
+
+ if (!IS_ERR(pdata->clk)) {
+ ret = clk_prepare_enable(pdata->clk);
+ if (ret < 0)
+ netdev_err(ndev, "failed to enable clock %d\n", ret);
+ }
+
+ return ret;
+}
+
+/* disable resources, currently just regulators. */
+static int mchp9352_disable_resources(struct platform_device *pdev)
+{
+ struct net_device *ndev = platform_get_drvdata(pdev);
+ struct mchp9352_data *pdata = netdev_priv(ndev);
+ int ret = 0;
+
+ ret = regulator_bulk_disable(ARRAY_SIZE(pdata->supplies),
+ pdata->supplies);
+
+ if (!IS_ERR(pdata->clk))
+ clk_disable_unprepare(pdata->clk);
+
+ return ret;
+}
+
+/* Request resources, currently just regulators.
+ *
+ * The SMSC911x has two power pins: vddvario and vdd33a, in designs where
+ * these are not always-on we need to request regulators to be turned on
+ * before we can try to access the device registers.
+ */
+static int mchp9352_request_resources(struct platform_device *pdev)
+{
+ struct net_device *ndev = platform_get_drvdata(pdev);
+ struct mchp9352_data *pdata = netdev_priv(ndev);
+ int ret = 0;
+
+ /* Request regulators */
+ pdata->supplies[0].supply = "vdd33a";
+ pdata->supplies[1].supply = "vddvario";
+ ret = regulator_bulk_get(&pdev->dev,
+ ARRAY_SIZE(pdata->supplies),
+ pdata->supplies);
+ if (ret)
+ netdev_err(ndev, "couldn't get regulators %d\n",
+ ret);
+
+ /* Request clock */
+ pdata->clk = clk_get(&pdev->dev, NULL);
+ if (IS_ERR(pdata->clk))
+ dev_dbg(&pdev->dev, "couldn't get clock %li\n",
+ PTR_ERR(pdata->clk));
+
+ return ret;
+}
+
+/* Free resources, currently just regulators. */
+static void mchp9352_free_resources(struct platform_device *pdev)
+{
+ struct net_device *ndev = platform_get_drvdata(pdev);
+ struct mchp9352_data *pdata = netdev_priv(ndev);
+
+ /* Free regulators */
+ regulator_bulk_free(ARRAY_SIZE(pdata->supplies),
+ pdata->supplies);
+
+ /* Free clock */
+ if (!IS_ERR(pdata->clk)) {
+ clk_put(pdata->clk);
+ pdata->clk = NULL;
+ }
+}
+
+/* waits for MAC not busy, with timeout. Only called by mchp9352_mac_read
+ * and mchp9352_mac_write, so assumes mac_lock is held
+ */
+static int mchp9352_mac_complete(struct mchp9352_data *pdata)
+{
+ int i;
+ u32 val;
+
+ MCHP_ASSERT_MAC_LOCK(pdata);
+
+ for (i = 0; i < 40; i++) {
+ val = mchp9352_reg_read(pdata, MAC_CSR_CMD);
+ if (!(val & MAC_CSR_CMD_CSR_BUSY_))
+ return 0;
+ }
+ MCHP_WARN(pdata, hw,
+ "Timed out waiting for MAC not BUSY. MAC_CSR_CMD: 0x%08X",
+ val);
+ return -EIO;
+}
+
+/* Fetches a MAC register value. Assumes mac_lock is acquired */
+static u32 mchp9352_mac_read(struct mchp9352_data *pdata, unsigned int offset)
+{
+ unsigned int temp;
+
+ MCHP_ASSERT_MAC_LOCK(pdata);
+
+ temp = mchp9352_reg_read(pdata, MAC_CSR_CMD);
+ if (unlikely(temp & MAC_CSR_CMD_CSR_BUSY_)) {
+ MCHP_WARN(pdata, hw, "MAC busy at entry");
+ return 0xFFFFFFFF;
+ }
+
+ /* Send the MAC cmd */
+ mchp9352_reg_write(pdata, MAC_CSR_CMD, ((offset & 0xFF) |
+ MAC_CSR_CMD_CSR_BUSY_ | MAC_CSR_CMD_R_NOT_W_));
+
+ /* Workaround for hardware read-after-write restriction */
+ temp = mchp9352_reg_read(pdata, BYTE_TEST);
+
+ /* Wait for the read to complete */
+ if (likely(mchp9352_mac_complete(pdata) == 0))
+ return mchp9352_reg_read(pdata, MAC_CSR_DATA);
+
+ MCHP_WARN(pdata, hw, "MAC busy after read");
+ return 0xFFFFFFFF;
+}
+
+/* Set a mac register, mac_lock must be acquired before calling */
+static void mchp9352_mac_write(struct mchp9352_data *pdata,
+ unsigned int offset, u32 val)
+{
+ unsigned int temp;
+
+ MCHP_ASSERT_MAC_LOCK(pdata);
+
+ temp = mchp9352_reg_read(pdata, MAC_CSR_CMD);
+ if (unlikely(temp & MAC_CSR_CMD_CSR_BUSY_)) {
+ MCHP_WARN(pdata, hw,
+ "mchp9352_mac_write failed, MAC busy at entry");
+ return;
+ }
+
+ /* Send data to write */
+ mchp9352_reg_write(pdata, MAC_CSR_DATA, val);
+
+ /* Write the actual data */
+ mchp9352_reg_write(pdata, MAC_CSR_CMD, ((offset & 0xFF) |
+ MAC_CSR_CMD_CSR_BUSY_));
+
+ /* Workaround for hardware read-after-write restriction */
+ temp = mchp9352_reg_read(pdata, BYTE_TEST);
+
+ /* Wait for the write to complete */
+ if (likely(mchp9352_mac_complete(pdata) == 0))
+ return;
+
+ MCHP_WARN(pdata, hw, "mchp9352_mac_write failed, MAC busy after write");
+}
+
+/* Get a phy register */
+static int mchp9352_mii_read(struct mii_bus *bus, int phyaddr, int regidx)
+{
+ struct mchp9352_data *pdata = (struct mchp9352_data *)bus->priv;
+ unsigned long flags;
+ unsigned int addr;
+ int i, reg;
+
+ spin_lock_irqsave(&pdata->mac_lock, flags);
+
+ /* Confirm MII not busy */
+ if (unlikely(mchp9352_mac_read(pdata, MII_ACC) & MII_ACC_MII_BUSY_)) {
+ MCHP_WARN(pdata, hw, "MII is busy in mchp9352_mii_read???");
+ reg = -EIO;
+ goto out;
+ }
+
+ /* Set the address, index & direction (read from PHY) */
+ addr = ((phyaddr & 0x1F) << 11) | ((regidx & 0x1F) << 6);
+ mchp9352_mac_write(pdata, MII_ACC, addr);
+
+ /* Wait for read to complete w/ timeout */
+ for (i = 0; i < 100; i++)
+ if (!(mchp9352_mac_read(pdata, MII_ACC) & MII_ACC_MII_BUSY_)) {
+ reg = mchp9352_mac_read(pdata, MII_DATA);
+ goto out;
+ }
+
+ MCHP_WARN(pdata, hw, "Timed out waiting for MII read to finish");
+ reg = -EIO;
+
+out:
+ spin_unlock_irqrestore(&pdata->mac_lock, flags);
+ return reg;
+}
+
+/* Set a phy register */
+static int mchp9352_mii_write(struct mii_bus *bus, int phyaddr, int regidx,
+ u16 val)
+{
+ struct mchp9352_data *pdata = (struct mchp9352_data *)bus->priv;
+ unsigned long flags;
+ unsigned int addr;
+ int i, reg;
+
+ spin_lock_irqsave(&pdata->mac_lock, flags);
+
+ /* Confirm MII not busy */
+ if (unlikely(mchp9352_mac_read(pdata, MII_ACC) & MII_ACC_MII_BUSY_)) {
+ MCHP_WARN(pdata, hw, "MII is busy in mchp9352_mii_write???");
+ reg = -EIO;
+ goto out;
+ }
+
+ /* Put the data to write in the MAC */
+ mchp9352_mac_write(pdata, MII_DATA, val);
+
+ /* Set the address, index & direction (write to PHY) */
+ addr = ((phyaddr & 0x1F) << 11) | ((regidx & 0x1F) << 6) |
+ MII_ACC_MII_WRITE_;
+ mchp9352_mac_write(pdata, MII_ACC, addr);
+
+ /* Wait for write to complete w/ timeout */
+ for (i = 0; i < 100; i++)
+ if (!(mchp9352_mac_read(pdata, MII_ACC) & MII_ACC_MII_BUSY_)) {
+ reg = 0;
+ goto out;
+ }
+
+ MCHP_WARN(pdata, hw, "Timed out waiting for MII write to finish");
+ reg = -EIO;
+
+out:
+ spin_unlock_irqrestore(&pdata->mac_lock, flags);
+ return reg;
+}
+
+/* Fetches a tx status out of the status fifo */
+static unsigned int mchp9352_tx_get_txstatus(struct mchp9352_data *pdata)
+{
+ unsigned int result =
+ mchp9352_reg_read(pdata, TX_FIFO_INF) & TX_FIFO_INF_TSUSED_;
+
+ if (result != 0)
+ result = mchp9352_reg_read(pdata, TX_STATUS_FIFO);
+
+ return result;
+}
+
+/* Fetches the next rx status */
+static unsigned int mchp9352_rx_get_rxstatus(struct mchp9352_data *pdata)
+{
+ unsigned int result =
+ mchp9352_reg_read(pdata, RX_FIFO_INF) & RX_FIFO_INF_RXSUSED_;
+
+ if (result != 0)
+ result = mchp9352_reg_read(pdata, RX_STATUS_FIFO);
+
+ return result;
+}
+
+static int mchp9352_phy_check_loopbackpkt(struct mchp9352_data *pdata)
+{
+ unsigned int tries;
+ u32 wrsz;
+ u32 rdsz;
+ ulong bufp;
+
+ for (tries = 0; tries < 10; tries++) {
+ unsigned int txcmd_a;
+ unsigned int txcmd_b;
+ unsigned int status;
+ unsigned int pktlength;
+ unsigned int i;
+
+ /* Zero-out rx packet memory */
+ memset(pdata->loopback_rx_pkt, 0, MIN_PACKET_SIZE);
+
+ /* Write tx packet to 118 */
+ txcmd_a = (u32)((ulong)pdata->loopback_tx_pkt & 0x03) << 16;
+ txcmd_a |= TX_CMD_A_FIRST_SEG_ | TX_CMD_A_LAST_SEG_;
+ txcmd_a |= MIN_PACKET_SIZE;
+
+ txcmd_b = MIN_PACKET_SIZE << 16 | MIN_PACKET_SIZE;
+
+ mchp9352_reg_write(pdata, TX_DATA_FIFO, txcmd_a);
+ mchp9352_reg_write(pdata, TX_DATA_FIFO, txcmd_b);
+
+ bufp = (ulong)pdata->loopback_tx_pkt & (~0x3);
+ wrsz = MIN_PACKET_SIZE + 3;
+ wrsz += (u32)((ulong)pdata->loopback_tx_pkt & 0x3);
+ wrsz >>= 2;
+
+ pdata->ops->tx_writefifo(pdata, (unsigned int *)bufp, wrsz);
+
+ /* Wait till transmit is done */
+ i = 60;
+ do {
+ udelay(5);
+ status = mchp9352_tx_get_txstatus(pdata);
+ } while ((i--) && (!status));
+
+ if (!status) {
+ MCHP_WARN(pdata, hw,
+ "Failed to transmit during loopback test");
+ continue;
+ }
+ if (status & TX_STS_ES_) {
+ MCHP_WARN(pdata, hw,
+ "Transmit encountered errors during loopback test");
+ continue;
+ }
+
+ /* Wait till receive is done */
+ i = 60;
+ do {
+ udelay(5);
+ status = mchp9352_rx_get_rxstatus(pdata);
+ } while ((i--) && (!status));
+
+ if (!status) {
+ MCHP_WARN(pdata, hw,
+ "Failed to receive during loopback test");
+ continue;
+ }
+ if (status & RX_STS_ES_) {
+ MCHP_WARN(pdata, hw,
+ "Receive encountered errors during loopback test");
+ continue;
+ }
+
+ pktlength = ((status & 0x3FFF0000UL) >> 16);
+ bufp = (ulong)pdata->loopback_rx_pkt;
+ rdsz = pktlength + 3;
+ rdsz += (u32)((ulong)pdata->loopback_rx_pkt & 0x3);
+ rdsz >>= 2;
+
+ pdata->ops->rx_readfifo(pdata, (unsigned int *)bufp, rdsz);
+
+ if (pktlength != (MIN_PACKET_SIZE + 4)) {
+ MCHP_WARN(pdata, hw,
+ "Unexpected packet size during loop back test, size=%d, will retry",
+ pktlength);
+ } else {
+ unsigned int j;
+ int mismatch = 0;
+
+ for (j = 0; j < MIN_PACKET_SIZE; j++) {
+ if (pdata->loopback_tx_pkt[j]
+ != pdata->loopback_rx_pkt[j]) {
+ mismatch = 1;
+ break;
+ }
+ }
+ if (!mismatch) {
+ MCHP_TRACE(pdata, hw,
+ "Successfully verified loopback packet");
+ return 0;
+ }
+ MCHP_WARN(pdata, hw,
+ "Data mismatch during loop back test, will retry");
+ }
+ }
+
+ return -EIO;
+}
+
+static int mchp9352_phy_reset(struct mchp9352_data *pdata)
+{
+ unsigned int temp;
+ unsigned int i = 100000;
+
+ temp = mchp9352_reg_read(pdata, PMT_CTRL);
+ mchp9352_reg_write(pdata, PMT_CTRL, temp | PMT_CTRL_PHY_RST_);
+ do {
+ usleep_range(1000, 10000);
+ temp = mchp9352_reg_read(pdata, PMT_CTRL);
+ } while ((i--) && (temp & PMT_CTRL_PHY_RST_));
+
+ if (unlikely(temp & PMT_CTRL_PHY_RST_)) {
+ MCHP_WARN(pdata, hw, "PHY reset failed to complete");
+ return -EIO;
+ }
+ /* Extra delay required because the phy may not be completed with
+ * its reset when BMCR_RESET is cleared. Specs say 256 uS is
+ * enough delay but using 1ms here to be safe
+ */
+ usleep_range(1000, 10000);
+
+ return 0;
+}
+
+static int mchp9352_phy_loopbacktest(struct net_device *dev)
+{
+ struct mchp9352_data *pdata = netdev_priv(dev);
+ struct phy_device *phy_dev = pdata->phy_dev;
+ int result = -EIO;
+ unsigned int i, val;
+ unsigned long flags;
+
+ /* Initialise tx packet using broadcast destination address */
+ eth_broadcast_addr(pdata->loopback_tx_pkt);
+
+ /* Use incrementing source address */
+ for (i = 6; i < 12; i++)
+ pdata->loopback_tx_pkt[i] = (char)i;
+
+ /* Set length type field */
+ pdata->loopback_tx_pkt[12] = 0x00;
+ pdata->loopback_tx_pkt[13] = 0x00;
+
+ for (i = 14; i < MIN_PACKET_SIZE; i++)
+ pdata->loopback_tx_pkt[i] = (char)i;
+
+ val = mchp9352_reg_read(pdata, HW_CFG);
+ val &= HW_CFG_TX_FIF_SZ_(0xFFFFFFFFUL);
+ val |= HW_CFG_SF_;/* on many parts this must be set */
+ mchp9352_reg_write(pdata, HW_CFG, val);
+
+ mchp9352_reg_write(pdata, TX_CFG, TX_CFG_TX_ON_);
+ mchp9352_reg_write(pdata, RX_CFG,
+ (u32)((ulong)pdata->loopback_rx_pkt & 0x03) << 8);
+
+ for (i = 0; i < 10; i++) {
+ /* Set PHY to 10/FD, no ANEG, and loopback mode */
+ mchp9352_mii_write(phy_dev->mdio.bus, phy_dev->mdio.addr,
+ MII_BMCR, BMCR_LOOPBACK | BMCR_FULLDPLX);
+
+ /* Enable MAC tx/rx, FD */
+ spin_lock_irqsave(&pdata->mac_lock, flags);
+ mchp9352_mac_write(pdata, MAC_CR, MAC_CR_FDPX_
+ | MAC_CR_TXEN_ | MAC_CR_RXEN_);
+ spin_unlock_irqrestore(&pdata->mac_lock, flags);
+
+ if (mchp9352_phy_check_loopbackpkt(pdata) == 0) {
+ result = 0;
+ break;
+ }
+ pdata->resetcount++;
+
+ /* Disable MAC rx */
+ spin_lock_irqsave(&pdata->mac_lock, flags);
+ mchp9352_mac_write(pdata, MAC_CR, 0);
+ spin_unlock_irqrestore(&pdata->mac_lock, flags);
+
+ mchp9352_phy_reset(pdata);
+ }
+
+ /* Disable MAC */
+ spin_lock_irqsave(&pdata->mac_lock, flags);
+ mchp9352_mac_write(pdata, MAC_CR, 0);
+ spin_unlock_irqrestore(&pdata->mac_lock, flags);
+
+ /* Cancel PHY loopback mode */
+ mchp9352_mii_write(phy_dev->mdio.bus, phy_dev->mdio.addr, MII_BMCR, 0);
+
+ mchp9352_reg_write(pdata, TX_CFG, 0);
+ mchp9352_reg_write(pdata, RX_CFG, 0);
+
+ return result;
+}
+
+static void mchp9352_phy_update_flowcontrol(struct mchp9352_data *pdata)
+{
+ struct phy_device *phy_dev = pdata->phy_dev;
+ u32 afc = mchp9352_reg_read(pdata, AFC_CFG);
+ u32 flow;
+ unsigned long flags;
+
+ if (phy_dev->duplex == DUPLEX_FULL) {
+ u16 lcladv = phy_read(phy_dev, MII_ADVERTISE);
+ u16 rmtadv = phy_read(phy_dev, MII_LPA);
+ u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv);
+
+ if (cap & FLOW_CTRL_RX)
+ flow = 0xFFFF0002;
+ else
+ flow = 0;
+
+ if (cap & FLOW_CTRL_TX)
+ afc |= 0xF;
+ else
+ afc &= ~0xF;
+
+ MCHP_TRACE(pdata, hw, "rx pause %s, tx pause %s",
+ (cap & FLOW_CTRL_RX ? "enabled" : "disabled"),
+ (cap & FLOW_CTRL_TX ? "enabled" : "disabled"));
+ } else {
+ MCHP_TRACE(pdata, hw, "half duplex");
+ flow = 0;
+ afc |= 0xF;
+ }
+
+ spin_lock_irqsave(&pdata->mac_lock, flags);
+ mchp9352_mac_write(pdata, FLOW, flow);
+ spin_unlock_irqrestore(&pdata->mac_lock, flags);
+
+ mchp9352_reg_write(pdata, AFC_CFG, afc);
+}
+
+/* Update link mode if anything has changed. Called periodically when the
+ * PHY is in polling mode, even if nothing has changed.
+ */
+static void mchp9352_phy_adjust_link(struct net_device *dev)
+{
+ struct mchp9352_data *pdata = netdev_priv(dev);
+ struct phy_device *phy_dev = pdata->phy_dev;
+ unsigned long flags;
+
+ if (phy_dev->duplex != pdata->last_duplex) {
+ unsigned int mac_cr;
+
+ MCHP_TRACE(pdata, hw, "duplex state has changed");
+
+ spin_lock_irqsave(&pdata->mac_lock, flags);
+ mac_cr = mchp9352_mac_read(pdata, MAC_CR);
+ if (phy_dev->duplex) {
+ MCHP_TRACE(pdata, hw,
+ "configuring for full duplex mode");
+ mac_cr |= MAC_CR_FDPX_;
+ } else {
+ MCHP_TRACE(pdata, hw,
+ "configuring for half duplex mode");
+ mac_cr &= ~MAC_CR_FDPX_;
+ }
+ mchp9352_mac_write(pdata, MAC_CR, mac_cr);
+ spin_unlock_irqrestore(&pdata->mac_lock, flags);
+
+ mchp9352_phy_update_flowcontrol(pdata);
+ pdata->last_duplex = phy_dev->duplex;
+ }
+}
+
+static int mchp9352_mii_probe(struct net_device *dev)
+{
+ struct mchp9352_data *pdata = netdev_priv(dev);
+ struct phy_device *phydev = NULL;
+ int ret;
+
+ /* find the first phy */
+ phydev = phy_find_first(pdata->mii_bus);
+ if (!phydev) {
+ netdev_err(dev, "no PHY found\n");
+ return -ENODEV;
+ }
+
+ MCHP_TRACE(pdata, probe, "PHY: addr %d, phy_id 0x%08X",
+ phydev->mdio.addr, phydev->phy_id);
+
+ ret = phy_connect_direct(dev, phydev, &mchp9352_phy_adjust_link,
+ pdata->config.phy_interface);
+
+ if (ret) {
+ netdev_err(dev, "Could not attach to PHY\n");
+ return ret;
+ }
+
+ phy_attached_info(phydev);
+
+ /* mask with MAC supported features */
+ phydev->supported &= (PHY_BASIC_FEATURES | SUPPORTED_Pause |
+ SUPPORTED_Asym_Pause);
+ phydev->advertising = phydev->supported;
+
+ pdata->phy_dev = phydev;
+ pdata->last_duplex = -1;
+ pdata->last_carrier = -1;
+
+ if (mchp9352_phy_loopbacktest(dev) < 0) {
+ MCHP_WARN(pdata, hw, "Failed Loop Back Test");
+ phy_disconnect(phydev);
+ return -ENODEV;
+ }
+ MCHP_TRACE(pdata, hw, "Passed Loop Back Test");
+
+ MCHP_TRACE(pdata, hw, "phy initialised successfully");
+ return 0;
+}
+
+static int mchp9352_mii_init(struct platform_device *pdev,
+ struct net_device *dev)
+{
+ struct mchp9352_data *pdata = netdev_priv(dev);
+ int err = -ENXIO;
+
+ pdata->mii_bus = mdiobus_alloc();
+ if (!pdata->mii_bus) {
+ err = -ENOMEM;
+ goto err_out_1;
+ }
+
+ pdata->mii_bus->name = MCHP_MDIONAME;
+ snprintf(pdata->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x",
+ pdev->name, pdev->id);
+ pdata->mii_bus->priv = pdata;
+ pdata->mii_bus->read = mchp9352_mii_read;
+ pdata->mii_bus->write = mchp9352_mii_write;
+ memcpy(pdata->mii_bus->irq, pdata->phy_irq, sizeof(pdata->mii_bus));
+
+ pdata->mii_bus->parent = &pdev->dev;
+
+ /* Mask all PHYs except address 0 and 1 (internal) */
+ pdata->mii_bus->phy_mask = ~(3 << 0);
+
+ if (mdiobus_register(pdata->mii_bus)) {
+ MCHP_WARN(pdata, probe, "Error registering mii bus");
+ goto err_out_free_bus_2;
+ }
+
+ if (mchp9352_mii_probe(dev) < 0) {
+ MCHP_WARN(pdata, probe, "Error registering mii bus");
+ goto err_out_unregister_bus_3;
+ }
+
+ return 0;
+
+err_out_unregister_bus_3:
+ mdiobus_unregister(pdata->mii_bus);
+err_out_free_bus_2:
+ mdiobus_free(pdata->mii_bus);
+err_out_1:
+ return err;
+}
+
+/* Gets the number of tx statuses in the fifo */
+static unsigned int mchp9352_tx_get_txstatcount(struct mchp9352_data *pdata)
+{
+ return (mchp9352_reg_read(pdata, TX_FIFO_INF)
+ & TX_FIFO_INF_TSUSED_) >> 16;
+}
+
+/* Reads tx statuses and increments counters where necessary */
+static void mchp9352_tx_update_txcounters(struct net_device *dev)
+{
+ struct mchp9352_data *pdata = netdev_priv(dev);
+ unsigned int tx_stat;
+
+ while ((tx_stat = mchp9352_tx_get_txstatus(pdata)) != 0) {
+ if (unlikely(tx_stat & 0x80000000)) {
+ /* In this driver the packet tag is used as the packet
+ * length. Since a packet length can never reach the
+ * size of 0x8000, this bit is reserved. It is worth
+ * noting that the "reserved bit" in the warning above
+ * does not reference a hardware defined reserved bit
+ * but rather a driver defined one.
+ */
+ MCHP_WARN(pdata, hw, "Packet tag reserved bit is high");
+ } else {
+ if (unlikely(tx_stat & TX_STS_ES_)) {
+ dev->stats.tx_errors++;
+ } else {
+ dev->stats.tx_packets++;
+ dev->stats.tx_bytes += (tx_stat >> 16);
+ }
+ if (unlikely(tx_stat & TX_STS_EXCESS_COL_)) {
+ dev->stats.collisions += 16;
+ dev->stats.tx_aborted_errors += 1;
+ } else {
+ dev->stats.collisions +=
+ ((tx_stat >> 3) & 0xF);
+ }
+ if (unlikely(tx_stat & TX_STS_LOST_CARRIER_))
+ dev->stats.tx_carrier_errors += 1;
+ if (unlikely(tx_stat & TX_STS_LATE_COL_)) {
+ dev->stats.collisions++;
+ dev->stats.tx_aborted_errors++;
+ }
+ }
+ }
+}
+
+/* Increments the Rx error counters */
+static void
+mchp9352_rx_counterrors(struct net_device *dev, unsigned int rxstat)
+{
+ int crc_err = 0;
+
+ if (unlikely(rxstat & RX_STS_ES_)) {
+ dev->stats.rx_errors++;
+ if (unlikely(rxstat & RX_STS_CRC_ERR_)) {
+ dev->stats.rx_crc_errors++;
+ crc_err = 1;
+ }
+ }
+ if (likely(!crc_err)) {
+ if (unlikely((rxstat & RX_STS_FRAME_TYPE_) &&
+ (rxstat & RX_STS_LENGTH_ERR_)))
+ dev->stats.rx_length_errors++;
+ if (rxstat & RX_STS_MCAST_)
+ dev->stats.multicast++;
+ }
+}
+
+/* Quickly dumps bad packets */
+static void
+mchp9352_rx_fastforward(struct mchp9352_data *pdata, unsigned int pktwords)
+{
+ if (likely(pktwords >= 4)) {
+ unsigned int timeout = 500;
+ unsigned int val;
+
+ mchp9352_reg_write(pdata, RX_DP_CTRL, RX_DP_CTRL_RX_FFWD_);
+ do {
+ udelay(1);
+ val = mchp9352_reg_read(pdata, RX_DP_CTRL);
+ } while ((val & RX_DP_CTRL_RX_FFWD_) && --timeout);
+
+ if (unlikely(timeout == 0))
+ MCHP_WARN(pdata, hw,
+ "Timed out waiting for RX FFWD to finish, RX_DP_CTRL: 0x%08X",
+ val);
+ } else {
+ unsigned int temp;
+
+ while (pktwords--)
+ temp = mchp9352_reg_read(pdata, RX_DATA_FIFO);
+ }
+}
+
+/* NAPI poll function */
+static int mchp9352_poll(struct napi_struct *napi, int budget)
+{
+ struct mchp9352_data *pdata =
+ container_of(napi, struct mchp9352_data, napi);
+ struct net_device *dev = pdata->dev;
+ int npackets = 0;
+
+ while (npackets < budget) {
+ unsigned int pktlength;
+ unsigned int pktwords;
+ struct sk_buff *skb;
+ unsigned int rxstat = mchp9352_rx_get_rxstatus(pdata);
+
+ if (!rxstat) {
+ unsigned int temp;
+ /* We processed all packets available. Tell NAPI it can
+ * stop polling then re-enable rx interrupts
+ */
+ mchp9352_reg_write(pdata, INT_STS, INT_STS_RSFL_);
+ napi_complete(napi);
+ temp = mchp9352_reg_read(pdata, INT_EN);
+ temp |= INT_EN_RSFL_EN_;
+ mchp9352_reg_write(pdata, INT_EN, temp);
+ break;
+ }
+
+ /* Count packet for NAPI scheduling, even if it has an error.
+ * Error packets still require cycles to discard
+ */
+ npackets++;
+
+ pktlength = ((rxstat & 0x3FFF0000) >> 16);
+ pktwords = (pktlength + NET_IP_ALIGN + 3) >> 2;
+ mchp9352_rx_counterrors(dev, rxstat);
+
+ if (unlikely(rxstat & RX_STS_ES_)) {
+ MCHP_WARN(pdata, rx_err,
+ "Discarding packet with error bit set");
+ /* Packet has an error, discard it and continue with
+ * the next
+ */
+ mchp9352_rx_fastforward(pdata, pktwords);
+ dev->stats.rx_dropped++;
+ continue;
+ }
+
+ skb = netdev_alloc_skb(dev, pktwords << 2);
+ if (unlikely(!skb)) {
+ MCHP_WARN(pdata, rx_err,
+ "Unable to allocate skb for rx packet");
+ /* Drop the packet and stop this polling iteration */
+ mchp9352_rx_fastforward(pdata, pktwords);
+ dev->stats.rx_dropped++;
+ break;
+ }
+
+ pdata->ops->rx_readfifo(pdata,
+ (unsigned int *)skb->data, pktwords);
+
+ /* Align IP on 16B boundary */
+ skb_reserve(skb, NET_IP_ALIGN);
+ skb_put(skb, pktlength - 4);
+ skb->protocol = eth_type_trans(skb, dev);
+ skb_checksum_none_assert(skb);
+ netif_receive_skb(skb);
+
+ /* Update counters */
+ dev->stats.rx_packets++;
+ dev->stats.rx_bytes += (pktlength - 4);
+ }
+
+ /* Return total received packets */
+ return npackets;
+}
+
+/* Returns hash bit number for given MAC address
+ * Example:
+ * 01 00 5E 00 00 01 -> returns bit number 31
+ */
+static unsigned int mchp9352_hash(char addr[ETH_ALEN])
+{
+ return (ether_crc(ETH_ALEN, addr) >> 26) & 0x3f;
+}
+
+static void mchp9352_rx_multicast_update(struct mchp9352_data *pdata)
+{
+ /* Performs the multicast & mac_cr update. This is called when
+ * safe on the current hardware, and with the mac_lock held
+ */
+ unsigned int mac_cr;
+
+ MCHP_ASSERT_MAC_LOCK(pdata);
+
+ mac_cr = mchp9352_mac_read(pdata, MAC_CR);
+ mac_cr |= pdata->set_bits_mask;
+ mac_cr &= ~(pdata->clear_bits_mask);
+ mchp9352_mac_write(pdata, MAC_CR, mac_cr);
+ mchp9352_mac_write(pdata, HASHH, pdata->hashhi);
+ mchp9352_mac_write(pdata, HASHL, pdata->hashlo);
+ MCHP_TRACE(pdata, hw, "maccr 0x%08X, HASHH 0x%08X, HASHL 0x%08X",
+ mac_cr, pdata->hashhi, pdata->hashlo);
+}
+
+static void mchp9352_rx_multicast_update_workaround(struct mchp9352_data *pdata)
+{
+ unsigned int mac_cr;
+
+ /* This function is only called for older LAN911x devices
+ * (revA or revB), where MAC_CR, HASHH and HASHL should not
+ * be modified during Rx - newer devices immediately update the
+ * registers.
+ *
+ * This is called from interrupt context
+ */
+
+ spin_lock(&pdata->mac_lock);
+
+ /* Check Rx has stopped */
+ if (mchp9352_mac_read(pdata, MAC_CR) & MAC_CR_RXEN_)
+ MCHP_WARN(pdata, drv, "Rx not stopped");
+
+ /* Perform the update - safe to do now Rx has stopped */
+ mchp9352_rx_multicast_update(pdata);
+
+ /* Re-enable Rx */
+ mac_cr = mchp9352_mac_read(pdata, MAC_CR);
+ mac_cr |= MAC_CR_RXEN_;
+ mchp9352_mac_write(pdata, MAC_CR, mac_cr);
+
+ pdata->multicast_update_pending = 0;
+
+ spin_unlock(&pdata->mac_lock);
+}
+
+static int mchp9352_phy_general_power_up(struct mchp9352_data *pdata)
+{
+ int rc = 0;
+
+ if (!pdata->phy_dev)
+ return rc;
+
+ /* If the internal PHY is in General Power-Down mode, all, except the
+ * management interface, is powered-down and stays in that condition as
+ * long as Phy register bit 0.11 is HIGH.
+ *
+ * In that case, clear the bit 0.11, so the PHY powers up and we can
+ * access to the phy registers.
+ */
+ rc = phy_read(pdata->phy_dev, MII_BMCR);
+ if (rc < 0) {
+ MCHP_WARN(pdata, drv, "Failed reading PHY control reg");
+ return rc;
+ }
+
+ /* If the PHY general power-down bit is not set is not necessary to
+ * disable the general power down-mode.
+ */
+ if (rc & BMCR_PDOWN) {
+ rc = phy_write(pdata->phy_dev, MII_BMCR, rc & ~BMCR_PDOWN);
+ if (rc < 0) {
+ MCHP_WARN(pdata, drv, "Failed writing PHY control reg");
+ return rc;
+ }
+
+ usleep_range(1000, 1500);
+ }
+
+ return 0;
+}
+
+static int mchp9352_phy_enable_energy_detect(struct mchp9352_data *pdata)
+{
+ int rc = 0;
+
+ if (!pdata->phy_dev)
+ return rc;
+
+ rc = phy_read(pdata->phy_dev, MII_LAN83C185_CTRL_STATUS);
+
+ if (rc < 0) {
+ MCHP_WARN(pdata, drv, "Failed reading PHY control reg");
+ return rc;
+ }
+
+ /* Only enable if energy detect mode is already disabled */
+ if (!(rc & MII_LAN83C185_EDPWRDOWN)) {
+ /* Enable energy detect mode for this SMSC Transceivers */
+ rc = phy_write(pdata->phy_dev, MII_LAN83C185_CTRL_STATUS,
+ rc | MII_LAN83C185_EDPWRDOWN);
+
+ if (rc < 0) {
+ MCHP_WARN(pdata, drv, "Failed writing PHY control reg");
+ return rc;
+ }
+ }
+ return 0;
+}
+
+static int mchp9352_wait_till_ready(struct mchp9352_data *pdata);
+
+static int mchp9352_soft_reset(struct mchp9352_data *pdata)
+{
+ unsigned int timeout;
+ unsigned int temp;
+ int ret;
+
+ /* Make sure to power-up the PHY chip before doing a reset, otherwise
+ * the reset fails.
+ */
+ ret = mchp9352_phy_general_power_up(pdata);
+ if (ret) {
+ MCHP_WARN(pdata, drv, "Failed to power-up the PHY chip");
+ return ret;
+ }
+
+ /* Reset the LAN9352 */
+ mchp9352_reg_write(pdata, RESET_CTL, RESET_CTL_DIGITAL_RST_);
+
+ if (mchp9352_wait_till_ready(pdata) != 0) {
+ MCHP_WARN(pdata, drv, "device not ready");
+ return -EIO;
+ }
+
+ /* verify reset bit is cleared */
+ timeout = 10;
+ do {
+ usleep_range(10, 20);
+ temp = mchp9352_reg_read(pdata, RESET_CTL);
+ } while ((--timeout) && (temp & RESET_CTL_DIGITAL_RST_));
+
+ if (unlikely(temp & RESET_CTL_DIGITAL_RST_)) {
+ MCHP_WARN(pdata, drv, "Failed to complete reset");
+ return -EIO;
+ }
+
+ ret = mchp9352_phy_enable_energy_detect(pdata);
+
+ if (ret) {
+ MCHP_WARN(pdata, drv, "Failed to wakeup the PHY chip");
+ return ret;
+ }
+
+ return 0;
+}
+
+/* Sets the device MAC address to dev_addr, called with mac_lock held */
+static void
+mchp9352_set_hw_mac_address(struct mchp9352_data *pdata, u8 dev_addr[6])
+{
+ u32 mac_high16 = (dev_addr[5] << 8) | dev_addr[4];
+ u32 mac_low32 = (dev_addr[3] << 24) | (dev_addr[2] << 16) |
+ (dev_addr[1] << 8) | dev_addr[0];
+
+ MCHP_ASSERT_MAC_LOCK(pdata);
+
+ mchp9352_mac_write(pdata, ADDRH, mac_high16);
+ mchp9352_mac_write(pdata, ADDRL, mac_low32);
+}
+
+static void mchp9352_disable_irq_chip(struct net_device *dev)
+{
+ struct mchp9352_data *pdata = netdev_priv(dev);
+
+ mchp9352_reg_write(pdata, INT_EN, 0);
+ mchp9352_reg_write(pdata, INT_STS, 0xFFFFFFFF);
+}
+
+static int mchp9352_eeprom_is_busy(struct mchp9352_data *pdata)
+{
+ int result = 0;
+
+ if (pdata) {
+ if (mchp9352_reg_read(pdata, E2P_CMD) & E2P_CMD_EPC_BUSY_)
+ result = 1;
+ }
+ return result;
+}
+
+static void mchp9352_eeprom_wait_till_done(struct mchp9352_data *pdata)
+{
+ unsigned int timeout = 50;
+
+ while ((mchp9352_eeprom_is_busy(pdata)) && (--timeout))
+ usleep_range(10, 20);
+
+ if (unlikely(timeout == 0)) {
+ MCHP_WARN(pdata, hw,
+ "Timed out waiting for EEPROM busy bit to clear");
+ }
+}
+
+static int mchp9352_open(struct net_device *dev)
+{
+ struct mchp9352_data *pdata = netdev_priv(dev);
+ unsigned int timeout;
+ unsigned int temp;
+ unsigned int intcfg;
+
+ /* if the phy is not yet registered, retry later*/
+ if (!pdata->phy_dev) {
+ MCHP_WARN(pdata, hw, "phy_dev is NULL");
+ return -EAGAIN;
+ }
+
+ /* Reset the LAN911x */
+ if (mchp9352_soft_reset(pdata)) {
+ MCHP_WARN(pdata, hw, "soft reset failed");
+ return -EIO;
+ }
+
+ mchp9352_reg_write(pdata, HW_CFG,
+ HW_CFG_TX_FIF_SZ_(5) |
+ HW_CFG_SF_ /* on many parts this must be set */
+ );
+ mchp9352_reg_write(pdata, AFC_CFG, 0x006E3740);
+
+ /* Increase the legal frame size of VLAN tagged frames to 1522 bytes
+ */
+ spin_lock_irq(&pdata->mac_lock);
+ mchp9352_mac_write(pdata, VLAN1, ETH_P_8021Q);
+ spin_unlock_irq(&pdata->mac_lock);
+
+ /* Make sure EEPROM has finished loading before setting GPIO_CFG */
+ mchp9352_eeprom_wait_till_done(pdata);
+
+ /* configure as gpio */
+ mchp9352_reg_write(pdata, LED_CFG, LED_CFG_ENABLE_(0xFF));
+
+ /* disable 1588 and set to open drain */
+ mchp9352_reg_write(pdata, GPIO_CFG, 0UL);
+
+ /* set gpio's as input */
+ mchp9352_reg_write(pdata, GPIO_DATA_DIR, 0UL);
+
+ /* The soft reset above cleared the device's MAC address,
+ * restore it from local copy (set in probe)
+ */
+ spin_lock_irq(&pdata->mac_lock);
+ mchp9352_set_hw_mac_address(pdata, dev->dev_addr);
+ spin_unlock_irq(&pdata->mac_lock);
+
+ /* Initialise irqs, but leave all sources disabled */
+ mchp9352_disable_irq_chip(dev);
+
+ /* Set interrupt deassertion to 100uS */
+ intcfg = ((10 << 24) | INT_CFG_IRQ_EN_);
+
+ if (pdata->config.irq_polarity) {
+ MCHP_TRACE(pdata, ifup, "irq polarity: active high");
+ intcfg |= INT_CFG_IRQ_POL_;
+ } else {
+ MCHP_TRACE(pdata, ifup, "irq polarity: active low");
+ }
+
+ if (pdata->config.irq_type) {
+ MCHP_TRACE(pdata, ifup, "irq type: push-pull");
+ intcfg |= INT_CFG_IRQ_TYPE_;
+ } else {
+ MCHP_TRACE(pdata, ifup, "irq type: open drain");
+ }
+
+ mchp9352_reg_write(pdata, INT_CFG, intcfg);
+
+ MCHP_TRACE(pdata, ifup, "Testing irq handler using IRQ %d", dev->irq);
+ pdata->software_irq_signal = 0;
+
+ /* Testing irq handler */
+ smp_wmb();
+
+ temp = mchp9352_reg_read(pdata, INT_EN);
+ temp |= INT_EN_SW_INT_EN_;
+ mchp9352_reg_write(pdata, INT_EN, temp);
+
+ timeout = 1000;
+ while (timeout--) {
+ if (pdata->software_irq_signal)
+ break;
+ usleep_range(1000, 10000);
+ }
+
+ if (!pdata->software_irq_signal) {
+ netdev_warn(dev, "ISR failed signaling test (IRQ %d)\n",
+ dev->irq);
+ return -ENODEV;
+ }
+ MCHP_TRACE(pdata, ifup, "IRQ handler passed test using IRQ %d",
+ dev->irq);
+
+ netdev_info(dev, "MCHP9352 identified at %#08lx, IRQ: %d\n",
+ (unsigned long)pdata->ioaddr, dev->irq);
+
+ /* Reset the last known duplex and carrier */
+ pdata->last_duplex = -1;
+ pdata->last_carrier = -1;
+
+ /* Bring the PHY up */
+ phy_start(pdata->phy_dev);
+
+ temp = mchp9352_reg_read(pdata, HW_CFG);
+ /* Preserve TX FIFO size and external PHY configuration */
+ temp &= (HW_CFG_TX_FIF_SZ_(0xFFFFFFFFUL) | 0x00000FFF);
+ temp |= HW_CFG_SF_; /* on many parts this must be set */
+ mchp9352_reg_write(pdata, HW_CFG, temp);
+
+ temp = mchp9352_reg_read(pdata, FIFO_INT);
+ temp |= FIFO_INT_TX_AVAIL_LEVEL_;
+ temp &= ~(FIFO_INT_RX_STS_LEVEL_);
+ mchp9352_reg_write(pdata, FIFO_INT, temp);
+
+ /* set RX Data offset to 2 bytes for alignment */
+ mchp9352_reg_write(pdata, RX_CFG, (NET_IP_ALIGN << 8));
+
+ /* enable NAPI polling before enabling RX interrupts */
+ napi_enable(&pdata->napi);
+
+ temp = mchp9352_reg_read(pdata, INT_EN);
+ temp |= (INT_EN_TDFA_EN_ | INT_EN_RSFL_EN_ | INT_EN_RXSTOP_INT_EN_);
+ mchp9352_reg_write(pdata, INT_EN, temp);
+
+ spin_lock_irq(&pdata->mac_lock);
+ temp = mchp9352_mac_read(pdata, MAC_CR);
+ temp |= (MAC_CR_TXEN_ | MAC_CR_RXEN_ | MAC_CR_HBDIS_);
+ mchp9352_mac_write(pdata, MAC_CR, temp);
+ spin_unlock_irq(&pdata->mac_lock);
+
+ mchp9352_reg_write(pdata, TX_CFG, TX_CFG_TX_ON_);
+
+ netif_start_queue(dev);
+ return 0;
+}
+
+/* Entry point for stopping the interface */
+static int mchp9352_stop(struct net_device *dev)
+{
+ struct mchp9352_data *pdata = netdev_priv(dev);
+ unsigned int temp;
+
+ /* Disable all device interrupts */
+ temp = mchp9352_reg_read(pdata, INT_CFG);
+ temp &= ~INT_CFG_IRQ_EN_;
+ mchp9352_reg_write(pdata, INT_CFG, temp);
+
+ /* Stop Tx and Rx polling */
+ netif_stop_queue(dev);
+ napi_disable(&pdata->napi);
+
+ /* At this point all Rx and Tx activity is stopped */
+ dev->stats.rx_dropped += mchp9352_reg_read(pdata, RX_DROP);
+ mchp9352_tx_update_txcounters(dev);
+
+ /* Bring the PHY down */
+ if (pdata->phy_dev)
+ phy_stop(pdata->phy_dev);
+
+ MCHP_TRACE(pdata, ifdown, "Interface stopped");
+ return 0;
+}
+
+/* Entry point for transmitting a packet */
+static int mchp9352_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct mchp9352_data *pdata = netdev_priv(dev);
+ unsigned int freespace;
+ unsigned int tx_cmd_a;
+ unsigned int tx_cmd_b;
+ unsigned int temp;
+ u32 wrsz;
+ ulong bufp;
+
+ freespace = mchp9352_reg_read(pdata, TX_FIFO_INF) & TX_FIFO_INF_TDFREE_;
+
+ if (unlikely(freespace < TX_FIFO_LOW_THRESHOLD))
+ MCHP_WARN(pdata, tx_err,
+ "Tx data fifo low, space available: %d", freespace);
+
+ /* Word alignment adjustment */
+ tx_cmd_a = (u32)((ulong)skb->data & 0x03) << 16;
+ tx_cmd_a |= TX_CMD_A_FIRST_SEG_ | TX_CMD_A_LAST_SEG_;
+ tx_cmd_a |= (unsigned int)skb->len;
+
+ tx_cmd_b = ((unsigned int)skb->len) << 16;
+ tx_cmd_b |= (unsigned int)skb->len;
+
+ mchp9352_reg_write(pdata, TX_DATA_FIFO, tx_cmd_a);
+ mchp9352_reg_write(pdata, TX_DATA_FIFO, tx_cmd_b);
+
+ bufp = (ulong)skb->data & (~0x3);
+ wrsz = (u32)skb->len + 3;
+ wrsz += (u32)((ulong)skb->data & 0x3);
+ wrsz >>= 2;
+
+ pdata->ops->tx_writefifo(pdata, (unsigned int *)bufp, wrsz);
+ freespace -= (skb->len + 32);
+ skb_tx_timestamp(skb);
+ dev_consume_skb_any(skb);
+
+ if (unlikely(mchp9352_tx_get_txstatcount(pdata) >= 30))
+ mchp9352_tx_update_txcounters(dev);
+
+ if (freespace < TX_FIFO_LOW_THRESHOLD) {
+ netif_stop_queue(dev);
+ temp = mchp9352_reg_read(pdata, FIFO_INT);
+ temp &= 0x00FFFFFF;
+ temp |= 0x32000000;
+ mchp9352_reg_write(pdata, FIFO_INT, temp);
+ }
+
+ return NETDEV_TX_OK;
+}
+
+/* Entry point for getting status counters */
+static struct net_device_stats *mchp9352_get_stats(struct net_device *dev)
+{
+ struct mchp9352_data *pdata = netdev_priv(dev);
+
+ mchp9352_tx_update_txcounters(dev);
+ dev->stats.rx_dropped += mchp9352_reg_read(pdata, RX_DROP);
+ return &dev->stats;
+}
+
+/* Entry point for setting addressing modes */
+static void mchp9352_set_multicast_list(struct net_device *dev)
+{
+ struct mchp9352_data *pdata = netdev_priv(dev);
+ unsigned long flags;
+
+ if (dev->flags & IFF_PROMISC) {
+ /* Enabling promiscuous mode */
+ pdata->set_bits_mask = MAC_CR_PRMS_;
+ pdata->clear_bits_mask = (MAC_CR_MCPAS_ | MAC_CR_HPFILT_);
+ pdata->hashhi = 0;
+ pdata->hashlo = 0;
+ } else if (dev->flags & IFF_ALLMULTI) {
+ /* Enabling all multicast mode */
+ pdata->set_bits_mask = MAC_CR_MCPAS_;
+ pdata->clear_bits_mask = (MAC_CR_PRMS_ | MAC_CR_HPFILT_);
+ pdata->hashhi = 0;
+ pdata->hashlo = 0;
+ } else if (!netdev_mc_empty(dev)) {
+ /* Enabling specific multicast addresses */
+ unsigned int hash_high = 0;
+ unsigned int hash_low = 0;
+ struct netdev_hw_addr *ha;
+
+ pdata->set_bits_mask = MAC_CR_HPFILT_;
+ pdata->clear_bits_mask = (MAC_CR_PRMS_ | MAC_CR_MCPAS_);
+
+ netdev_for_each_mc_addr(ha, dev) {
+ unsigned int bitnum = mchp9352_hash(ha->addr);
+ unsigned int mask = 0x01 << (bitnum & 0x1F);
+
+ if (bitnum & 0x20)
+ hash_high |= mask;
+ else
+ hash_low |= mask;
+ }
+
+ pdata->hashhi = hash_high;
+ pdata->hashlo = hash_low;
+ } else {
+ /* Enabling local MAC address only */
+ pdata->set_bits_mask = 0;
+ pdata->clear_bits_mask =
+ (MAC_CR_PRMS_ | MAC_CR_MCPAS_ | MAC_CR_HPFILT_);
+ pdata->hashhi = 0;
+ pdata->hashlo = 0;
+ }
+
+ spin_lock_irqsave(&pdata->mac_lock, flags);
+
+ /* Newer hardware revision - can write immediately */
+ mchp9352_rx_multicast_update(pdata);
+
+ spin_unlock_irqrestore(&pdata->mac_lock, flags);
+}
+
+static irqreturn_t mchp9352_irqhandler(int irq, void *dev_id)
+{
+ struct net_device *dev = dev_id;
+ struct mchp9352_data *pdata = netdev_priv(dev);
+ u32 intsts = mchp9352_reg_read(pdata, INT_STS);
+ u32 inten = mchp9352_reg_read(pdata, INT_EN);
+ int serviced = IRQ_NONE;
+ u32 temp;
+
+ if (unlikely(intsts & inten & INT_STS_SW_INT_)) {
+ temp = mchp9352_reg_read(pdata, INT_EN);
+ temp &= (~INT_EN_SW_INT_EN_);
+ mchp9352_reg_write(pdata, INT_EN, temp);
+ mchp9352_reg_write(pdata, INT_STS, INT_STS_SW_INT_);
+ pdata->software_irq_signal = 1;
+ smp_wmb();/* IRQ Handled */
+ serviced = IRQ_HANDLED;
+ }
+
+ if (unlikely(intsts & inten & INT_STS_RXSTOP_INT_)) {
+ /* Called when there is a multicast update scheduled and
+ * it is now safe to complete the update
+ */
+ MCHP_TRACE(pdata, intr, "RX Stop interrupt");
+ mchp9352_reg_write(pdata, INT_STS, INT_STS_RXSTOP_INT_);
+ if (pdata->multicast_update_pending)
+ mchp9352_rx_multicast_update_workaround(pdata);
+ serviced = IRQ_HANDLED;
+ }
+
+ if (intsts & inten & INT_STS_TDFA_) {
+ temp = mchp9352_reg_read(pdata, FIFO_INT);
+ temp |= FIFO_INT_TX_AVAIL_LEVEL_;
+ mchp9352_reg_write(pdata, FIFO_INT, temp);
+ mchp9352_reg_write(pdata, INT_STS, INT_STS_TDFA_);
+ netif_wake_queue(dev);
+ serviced = IRQ_HANDLED;
+ }
+
+ if (unlikely(intsts & inten & INT_STS_RXE_)) {
+ MCHP_TRACE(pdata, intr, "RX Error interrupt");
+ mchp9352_reg_write(pdata, INT_STS, INT_STS_RXE_);
+ serviced = IRQ_HANDLED;
+ }
+
+ if (likely(intsts & inten & INT_STS_RSFL_)) {
+ if (likely(napi_schedule_prep(&pdata->napi))) {
+ /* Disable Rx interrupts */
+ temp = mchp9352_reg_read(pdata, INT_EN);
+ temp &= (~INT_EN_RSFL_EN_);
+ mchp9352_reg_write(pdata, INT_EN, temp);
+ /* Schedule a NAPI poll */
+ __napi_schedule(&pdata->napi);
+ } else {
+ MCHP_WARN(pdata, rx_err, "napi_schedule_prep failed");
+ }
+ serviced = IRQ_HANDLED;
+ }
+
+ return serviced;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void mchp9352_poll_controller(struct net_device *dev)
+{
+ disable_irq(dev->irq);
+ mchp9352_irqhandler(0, dev);
+ enable_irq(dev->irq);
+}
+#endif /* CONFIG_NET_POLL_CONTROLLER */
+
+static int mchp9352_set_mac_address(struct net_device *dev, void *p)
+{
+ struct mchp9352_data *pdata = netdev_priv(dev);
+ struct sockaddr *addr = p;
+
+ if (!is_valid_ether_addr(addr->sa_data))
+ return -EADDRNOTAVAIL;
+
+ ether_addr_copy(dev->dev_addr, addr->sa_data);
+
+ spin_lock_irq(&pdata->mac_lock);
+ mchp9352_set_hw_mac_address(pdata, dev->dev_addr);
+ spin_unlock_irq(&pdata->mac_lock);
+
+ netdev_info(dev, "MAC Address: %pM\n", dev->dev_addr);
+
+ return 0;
+}
+
+/* Standard ioctls for mii-tool */
+static int mchp9352_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+{
+ struct mchp9352_data *pdata = netdev_priv(dev);
+
+ if (!netif_running(dev) || !pdata->phy_dev)
+ return -EINVAL;
+
+ return phy_mii_ioctl(pdata->phy_dev, ifr, cmd);
+}
+
+static int
+mchp9352_ethtool_getsettings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ struct mchp9352_data *pdata = netdev_priv(dev);
+
+ cmd->maxtxpkt = 1;
+ cmd->maxrxpkt = 1;
+ return phy_ethtool_gset(pdata->phy_dev, cmd);
+}
+
+static int
+mchp9352_ethtool_setsettings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ struct mchp9352_data *pdata = netdev_priv(dev);
+
+ return phy_ethtool_sset(pdata->phy_dev, cmd);
+}
+
+static void mchp9352_ethtool_getdrvinfo(struct net_device *dev,
+ struct ethtool_drvinfo *info)
+{
+ strlcpy(info->driver, MCHP_CHIPNAME, sizeof(info->driver));
+ strlcpy(info->version, MCHP_DRV_VERSION, sizeof(info->version));
+ strlcpy(info->bus_info, dev_name(dev->dev.parent),
+ sizeof(info->bus_info));
+}
+
+static int mchp9352_ethtool_nwayreset(struct net_device *dev)
+{
+ struct mchp9352_data *pdata = netdev_priv(dev);
+
+ return phy_start_aneg(pdata->phy_dev);
+}
+
+static u32 mchp9352_ethtool_getmsglevel(struct net_device *dev)
+{
+ struct mchp9352_data *pdata = netdev_priv(dev);
+
+ return pdata->msg_enable;
+}
+
+static void mchp9352_ethtool_setmsglevel(struct net_device *dev, u32 level)
+{
+ struct mchp9352_data *pdata = netdev_priv(dev);
+
+ pdata->msg_enable = level;
+}
+
+static int mchp9352_ethtool_getregslen(struct net_device *dev)
+{
+ return (((LAN_REGISTER_EXTENT - ID_REV) / 4 + 1) +
+ (WUCSR - MAC_CR) + 1 + 32) * sizeof(u32);
+}
+
+static void
+mchp9352_ethtool_getregs(struct net_device *dev, struct ethtool_regs *regs,
+ void *buf)
+{
+ struct mchp9352_data *pdata = netdev_priv(dev);
+ struct phy_device *phy_dev = pdata->phy_dev;
+ unsigned long flags;
+ unsigned int i;
+ unsigned int j = 0;
+ u32 *data = buf;
+
+ regs->version = pdata->idrev;
+ for (i = ID_REV; i <= LAN_REGISTER_EXTENT; i += (sizeof(u32)))
+ data[j++] = mchp9352_reg_read(pdata, i);
+
+ for (i = MAC_CR; i <= WUCSR; i++) {
+ spin_lock_irqsave(&pdata->mac_lock, flags);
+ data[j++] = mchp9352_mac_read(pdata, i);
+ spin_unlock_irqrestore(&pdata->mac_lock, flags);
+ }
+
+ for (i = 0; i <= 31; i++)
+ data[j++] = mchp9352_mii_read(phy_dev->mdio.bus,
+ phy_dev->mdio.addr, i);
+}
+
+static void mchp9352_eeprom_enable_access(struct mchp9352_data *pdata)
+{
+ /* for switch products the EEPROM is enabled by default */
+ usleep_range(1000, 10000);
+}
+
+static int mchp9352_eeprom_send_cmd(struct mchp9352_data *pdata, u32 op)
+{
+ int timeout = 100;
+ u32 e2cmd;
+
+ MCHP_TRACE(pdata, drv, "op 0x%08x", op);
+ if (mchp9352_eeprom_is_busy(pdata)) {
+ MCHP_WARN(pdata, drv, "Busy at start");
+ return -EBUSY;
+ }
+
+ e2cmd = op | E2P_CMD_EPC_BUSY_;
+ mchp9352_reg_write(pdata, E2P_CMD, e2cmd);
+
+ do {
+ usleep_range(1000, 10000);
+ e2cmd = mchp9352_reg_read(pdata, E2P_CMD);
+ } while ((e2cmd & E2P_CMD_EPC_BUSY_) && (--timeout));
+
+ if (!timeout) {
+ MCHP_TRACE(pdata, drv, "TIMED OUT");
+ return -EAGAIN;
+ }
+
+ if (e2cmd & E2P_CMD_EPC_TIMEOUT_) {
+ /* note some parts don't support EWDS, EWEN, WRAL, ERASE, ERAL.
+ * So this timeout error will occur in those cases.
+ * But WRITE operations should still work.
+ * I will leave the following error message, incase it is
+ * reporting a real error. But if not, then just ignore the
+ * error and clear the timeout bit, so a following WRITE
+ * operation should work.
+ */
+ MCHP_TRACE(pdata, drv,
+ "Possible error occurred during eeprom operation");
+ /* clear the time out so that future operations will work */
+ mchp9352_reg_write(pdata, E2P_CMD, E2P_CMD_EPC_TIMEOUT_);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int mchp9352_eeprom_read_location(struct mchp9352_data *pdata,
+ u8 address, u8 *data)
+{
+ u32 op = E2P_CMD_EPC_CMD_READ_ | address;
+ int ret;
+
+ MCHP_TRACE(pdata, drv, "address 0x%x", address);
+ ret = mchp9352_eeprom_send_cmd(pdata, op);
+
+ if (!ret)
+ data[address] = mchp9352_reg_read(pdata, E2P_DATA);
+
+ return ret;
+}
+
+static int mchp9352_eeprom_write_location(struct mchp9352_data *pdata,
+ u8 address, u8 data)
+{
+ u32 op = E2P_CMD_EPC_CMD_ERASE_ | address;
+ u32 temp;
+ int ret;
+
+ MCHP_TRACE(pdata, drv, "address 0x%x, data 0x%x", address, data);
+ ret = mchp9352_eeprom_send_cmd(pdata, op);
+ if (ret) {
+ /* some switch parts don't use the ERASE command,
+ * never the less the following WRITE command should work.
+ * Report this error incase it is causing a real problem.
+ * But allow the write to proceed incase it is not a problem
+ */
+ MCHP_TRACE(pdata, drv, "ERROR in EEPROM ERASE command.");
+ ret = 0;
+ }
+
+ if (!ret) {
+ op = E2P_CMD_EPC_CMD_WRITE_ | address;
+ mchp9352_reg_write(pdata, E2P_DATA, (u32)data);
+
+ /* Workaround for hardware read-after-write restriction */
+ temp = mchp9352_reg_read(pdata, BYTE_TEST);
+
+ ret = mchp9352_eeprom_send_cmd(pdata, op);
+ }
+
+ return ret;
+}
+
+static int mchp9352_ethtool_get_eeprom_len(struct net_device *dev)
+{
+ return MCHP9352_EEPROM_SIZE;
+}
+
+static int mchp9352_ethtool_get_eeprom(struct net_device *dev,
+ struct ethtool_eeprom *eeprom, u8 *data)
+{
+ struct mchp9352_data *pdata = netdev_priv(dev);
+ u8 eeprom_data[MCHP9352_EEPROM_SIZE];
+ int len;
+ int i;
+ int start;
+ int end;
+
+ mchp9352_eeprom_enable_access(pdata);
+
+ start = eeprom->offset;
+ end = min((start + eeprom->len), MCHP9352_EEPROM_SIZE);
+ len = end - start;
+ for (i = start; i < end; i++) {
+ int ret = mchp9352_eeprom_read_location(pdata, i, eeprom_data);
+
+ if (ret < 0) {
+ eeprom->len = 0;
+ return ret;
+ }
+ }
+
+ memcpy(data, &eeprom_data[start], len);
+ eeprom->len = len;
+ return 0;
+}
+
+static int mchp9352_ethtool_set_eeprom(struct net_device *dev,
+ struct ethtool_eeprom *eeprom, u8 *data)
+{
+ int ret;
+ struct mchp9352_data *pdata = netdev_priv(dev);
+
+ mchp9352_eeprom_enable_access(pdata);
+ mchp9352_eeprom_send_cmd(pdata, E2P_CMD_EPC_CMD_EWEN_);
+ ret = mchp9352_eeprom_write_location(pdata, eeprom->offset, *data);
+ mchp9352_eeprom_send_cmd(pdata, E2P_CMD_EPC_CMD_EWDS_);
+
+ /* Single byte write, according to man page */
+ eeprom->len = 1;
+
+ return ret;
+}
+
+static const struct ethtool_ops mchp9352_ethtool_ops = {
+ .get_settings = mchp9352_ethtool_getsettings,
+ .set_settings = mchp9352_ethtool_setsettings,
+ .get_link = ethtool_op_get_link,
+ .get_drvinfo = mchp9352_ethtool_getdrvinfo,
+ .nway_reset = mchp9352_ethtool_nwayreset,
+ .get_msglevel = mchp9352_ethtool_getmsglevel,
+ .set_msglevel = mchp9352_ethtool_setmsglevel,
+ .get_regs_len = mchp9352_ethtool_getregslen,
+ .get_regs = mchp9352_ethtool_getregs,
+ .get_eeprom_len = mchp9352_ethtool_get_eeprom_len,
+ .get_eeprom = mchp9352_ethtool_get_eeprom,
+ .set_eeprom = mchp9352_ethtool_set_eeprom,
+ .get_ts_info = ethtool_op_get_ts_info,
+};
+
+static const struct net_device_ops mchp9352_netdev_ops = {
+ .ndo_open = mchp9352_open,
+ .ndo_stop = mchp9352_stop,
+ .ndo_start_xmit = mchp9352_hard_start_xmit,
+ .ndo_get_stats = mchp9352_get_stats,
+ .ndo_set_rx_mode = mchp9352_set_multicast_list,
+ .ndo_do_ioctl = mchp9352_do_ioctl,
+ .ndo_change_mtu = eth_change_mtu,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_mac_address = mchp9352_set_mac_address,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = mchp9352_poll_controller,
+#endif
+};
+
+/* copies the current mac address from hardware to dev->dev_addr */
+static void mchp9352_read_mac_address(struct net_device *dev)
+{
+ struct mchp9352_data *pdata = netdev_priv(dev);
+ u32 mac_high16 = mchp9352_mac_read(pdata, ADDRH);
+ u32 mac_low32 = mchp9352_mac_read(pdata, ADDRL);
+
+ dev->dev_addr[0] = (u8)(mac_low32);
+ dev->dev_addr[1] = (u8)(mac_low32 >> 8);
+ dev->dev_addr[2] = (u8)(mac_low32 >> 16);
+ dev->dev_addr[3] = (u8)(mac_low32 >> 24);
+ dev->dev_addr[4] = (u8)(mac_high16);
+ dev->dev_addr[5] = (u8)(mac_high16 >> 8);
+}
+
+/* To be called before any other access, and after reset */
+static int mchp9352_wait_till_ready(struct mchp9352_data *pdata)
+{
+ /* BYTE_TEST must read correctly before
+ * any other register read is legitimate
+ */
+ unsigned byte_test = 0;
+ unsigned count = 0;
+
+ byte_test = mchp9352_reg_read(pdata, BYTE_TEST);
+ while ((byte_test != 0x87654321) && (byte_test != 0x43218765) &&
+ (count < 1000)) {
+ usleep_range(100, 200);
+ byte_test = mchp9352_reg_read(pdata, BYTE_TEST);
+ count++;
+ }
+
+ if (byte_test == 0x43218765) {
+ MCHP_TRACE(pdata, probe,
+ "BYTE_TEST looks swapped, applying WORD_SWAP");
+ mchp9352_reg_write(pdata, WORD_SWAP, 0xffffffff);
+
+ /* 1 dummy read of BYTE_TEST is needed after a write to
+ * WORD_SWAP before its contents are valid
+ */
+ byte_test = mchp9352_reg_read(pdata, BYTE_TEST);
+
+ byte_test = mchp9352_reg_read(pdata, BYTE_TEST);
+ }
+
+ if (byte_test != 0x87654321) {
+ MCHP_WARN(pdata, drv, "BYTE_TEST: 0x%08X", byte_test);
+ if (((byte_test >> 16) & 0xFFFF) == (byte_test & 0xFFFF)) {
+ MCHP_WARN(pdata, probe,
+ "top 16 bits equal to bottom 16 bits");
+ MCHP_TRACE(pdata, probe,
+ "This may mean the chip is set for 32 bit while the bus is reading 16 bit");
+ }
+ return -ENODEV;
+ }
+ return 0;
+}
+
+/* Initializing private device structures, only called from probe */
+static int mchp9352_init(struct net_device *dev)
+{
+ struct mchp9352_data *pdata = netdev_priv(dev);
+ unsigned int byte_test, mask;
+ unsigned int to = 100;
+
+ MCHP_TRACE(pdata, probe, "Driver Parameters:");
+ MCHP_TRACE(pdata, probe, "LAN base: 0x%08lX",
+ (unsigned long)pdata->ioaddr);
+ MCHP_TRACE(pdata, probe, "IRQ: %d", dev->irq);
+ MCHP_TRACE(pdata, probe, "PHY will be autodetected.");
+
+ spin_lock_init(&pdata->dev_lock);
+ spin_lock_init(&pdata->mac_lock);
+
+ if (!pdata->ioaddr) {
+ MCHP_WARN(pdata, probe, "pdata->ioaddr: 0x00000000");
+ return -ENODEV;
+ }
+
+ if (mchp9352_wait_till_ready(pdata) != 0) {
+ MCHP_WARN(pdata, probe, "failed mchp9352_wait_till_ready");
+ return -ENODEV;
+ }
+
+ /* poll the READY bit in PMT_CTRL. Any other access to the device is
+ * forbidden while this bit isn't set. Try for 100ms
+ *
+ * Note that this test is done before the WORD_SWAP register is
+ * programmed. So in some configurations the READY bit is at 16 before
+ * WORD_SWAP is written to. This issue is worked around by waiting
+ * until either bit 0 or bit 16 gets set in PMT_CTRL.
+ *
+ * SMSC has confirmed that checking bit 16 (marked as reserved in
+ * the datasheet) is fine since these bits "will either never be set
+ * or can only go high after READY does (so also indicate the device
+ * is ready)".
+ */
+
+ mask = PMT_CTRL_READY_ | swahw32(PMT_CTRL_READY_);
+ while (!(mchp9352_reg_read(pdata, PMT_CTRL) & mask) && --to)
+ usleep_range(1000, 2000);
+
+ if (to == 0) {
+ netdev_err(dev, "Device not READY in 100ms aborting\n");
+ return -ENODEV;
+ }
+
+ /* Check byte ordering */
+ byte_test = mchp9352_reg_read(pdata, BYTE_TEST);
+ MCHP_TRACE(pdata, probe, "BYTE_TEST: 0x%08X", byte_test);
+ if (byte_test == 0x43218765) {
+ MCHP_TRACE(pdata, probe,
+ "BYTE_TEST looks swapped, applying WORD_SWAP");
+ mchp9352_reg_write(pdata, WORD_SWAP, 0xffffffff);
+
+ /* 1 dummy read of BYTE_TEST is needed after a write to
+ * WORD_SWAP before its contents are valid
+ */
+ byte_test = mchp9352_reg_read(pdata, BYTE_TEST);
+
+ byte_test = mchp9352_reg_read(pdata, BYTE_TEST);
+ }
+
+ if (byte_test != 0x87654321) {
+ MCHP_WARN(pdata, drv, "BYTE_TEST: 0x%08X", byte_test);
+ if (((byte_test >> 16) & 0xFFFF) == (byte_test & 0xFFFF)) {
+ MCHP_WARN(pdata, probe,
+ "top 16 bits equal to bottom 16 bits");
+ MCHP_TRACE(pdata, probe,
+ "This may mean the chip is set for 32 bit while the bus is reading 16 bit");
+ }
+ return -ENODEV;
+ }
+
+ pdata->idrev = mchp9352_reg_read(pdata, ID_REV);
+ switch (pdata->idrev & 0xFFFF0000) {
+ case 0x92500000:
+ case 0x93110000:
+ case 0x93120000:
+ case 0x93520000:
+ /* LAN9250/LAN9311/LAN9312/LAN9352 */
+ break;
+
+ default:
+ MCHP_WARN(pdata, probe, "Switch not identified, idrev: 0x%08X",
+ pdata->idrev);
+ return -ENODEV;
+ }
+
+ MCHP_TRACE(pdata, probe,
+ "Switch identified, idrev: 0x%08X", pdata->idrev);
+
+ /* workaround for platforms without an eeprom, where the mac address
+ * is stored elsewhere and set by the bootloader. This saves the
+ * mac address before resetting the device
+ */
+ if (pdata->config.flags & MCHP9352_SAVE_MAC_ADDRESS) {
+ spin_lock_irq(&pdata->mac_lock);
+ mchp9352_read_mac_address(dev);
+ spin_unlock_irq(&pdata->mac_lock);
+ }
+
+ /* Reset the LAN9352 */
+ if (mchp9352_phy_reset(pdata) || mchp9352_soft_reset(pdata))
+ return -ENODEV;
+
+ dev->flags |= IFF_MULTICAST;
+ netif_napi_add(dev, &pdata->napi, mchp9352_poll, MCHP_NAPI_WEIGHT);
+ dev->netdev_ops = &mchp9352_netdev_ops;
+ dev->ethtool_ops = &mchp9352_ethtool_ops;
+
+ return 0;
+}
+
+static int mchp9352_drv_remove(struct platform_device *pdev)
+{
+ struct net_device *dev;
+ struct mchp9352_data *pdata;
+ struct resource *res;
+
+ dev = platform_get_drvdata(pdev);
+ WARN_ON(!dev);
+ pdata = netdev_priv(dev);
+ WARN_ON(!pdata);
+ WARN_ON(!pdata->ioaddr);
+ WARN_ON(!pdata->phy_dev);
+
+ MCHP_TRACE(pdata, ifdown, "Stopping driver");
+
+ phy_disconnect(pdata->phy_dev);
+ pdata->phy_dev = NULL;
+ mdiobus_unregister(pdata->mii_bus);
+ mdiobus_free(pdata->mii_bus);
+
+ unregister_netdev(dev);
+ free_irq(dev->irq, dev);
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+ "mchp9352-memory");
+ if (!res)
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+ release_mem_region(res->start, resource_size(res));
+
+ iounmap(pdata->ioaddr);
+
+ (void)mchp9352_disable_resources(pdev);
+ mchp9352_free_resources(pdev);
+
+ free_netdev(dev);
+
+ pm_runtime_put(&pdev->dev);
+ pm_runtime_disable(&pdev->dev);
+
+ return 0;
+}
+
+/* standard register acces */
+static const struct mchp9352_ops standard_mchp9352_ops = {
+ .reg_read = __mchp9352_reg_read,
+ .reg_write = __mchp9352_reg_write,
+ .rx_readfifo = mchp9352_rx_readfifo,
+ .tx_writefifo = mchp9352_tx_writefifo,
+};
+
+/* shifted register access */
+static const struct mchp9352_ops shifted_mchp9352_ops = {
+ .reg_read = __mchp9352_reg_read_shift,
+ .reg_write = __mchp9352_reg_write_shift,
+ .rx_readfifo = mchp9352_rx_readfifo_shift,
+ .tx_writefifo = mchp9352_tx_writefifo_shift,
+};
+
+static int mchp9352_probe_config(struct mchp9352_platform_config *config,
+ struct device *dev)
+{
+ int phy_interface;
+ u32 width = 0;
+ int err;
+
+ phy_interface = device_get_phy_mode(dev);
+ if (phy_interface < 0)
+ phy_interface = PHY_INTERFACE_MODE_NA;
+ config->phy_interface = phy_interface;
+
+ device_get_mac_address(dev, config->mac, ETH_ALEN);
+
+ err = device_property_read_u32(dev, "reg-io-width", &width);
+ if (err == -ENXIO)
+ return err;
+ if (!err && width == 4)
+ config->flags |= MCHP9352_USE_32BIT;
+ else
+ config->flags |= MCHP9352_USE_16BIT;
+
+ device_property_read_u32(dev, "reg-shift", &config->shift);
+
+ if (device_property_present(dev, "microchip,irq-active-high"))
+ config->irq_polarity = MCHP9352_IRQ_POLARITY_ACTIVE_HIGH;
+
+ if (device_property_present(dev, "microchip,irq-push-pull"))
+ config->irq_type = MCHP9352_IRQ_TYPE_PUSH_PULL;
+
+ if (device_property_present(dev, "microchip,save-mac-address"))
+ config->flags |= MCHP9352_SAVE_MAC_ADDRESS;
+
+ return 0;
+}
+
+static int mchp9352_drv_probe(struct platform_device *pdev)
+{
+ struct net_device *dev;
+ struct mchp9352_data *pdata;
+ struct mchp9352_platform_config *config = dev_get_platdata(&pdev->dev);
+ struct resource *res;
+ unsigned int intcfg = 0;
+ int res_size, irq, irq_flags;
+ int retval;
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+ "mchp9352-memory");
+ if (!res)
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ pr_warn("Could not allocate resource\n");
+ retval = -ENODEV;
+ goto out_0;
+ }
+ res_size = resource_size(res);
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq == -EPROBE_DEFER) {
+ retval = -EPROBE_DEFER;
+ goto out_0;
+ } else if (irq <= 0) {
+ pr_warn("Could not allocate irq resource\n");
+ retval = -ENODEV;
+ goto out_0;
+ }
+
+ if (!request_mem_region(res->start, res_size, MCHP_CHIPNAME)) {
+ retval = -EBUSY;
+ goto out_0;
+ }
+
+ dev = alloc_etherdev(sizeof(struct mchp9352_data));
+ if (!dev) {
+ retval = -ENOMEM;
+ goto out_release_io_1;
+ }
+
+ SET_NETDEV_DEV(dev, &pdev->dev);
+
+ pdata = netdev_priv(dev);
+ dev->irq = irq;
+ irq_flags = irq_get_trigger_type(irq);
+ pdata->ioaddr = ioremap_nocache(res->start, res_size);
+
+ pdata->dev = dev;
+ pdata->msg_enable = ((1 << debug) - 1);
+
+ platform_set_drvdata(pdev, dev);
+
+ retval = mchp9352_request_resources(pdev);
+ if (retval)
+ goto out_request_resources_fail;
+
+ retval = mchp9352_enable_resources(pdev);
+ if (retval)
+ goto out_enable_resources_fail;
+
+ if (!pdata->ioaddr) {
+ MCHP_WARN(pdata, probe, "Error mchp9352 base address invalid");
+ retval = -ENOMEM;
+ goto out_disable_resources;
+ }
+
+ retval = mchp9352_probe_config(&pdata->config, &pdev->dev);
+ if (retval && config) {
+ /* copy config parameters across to pdata */
+ memcpy(&pdata->config, config, sizeof(pdata->config));
+ retval = 0;
+ }
+
+ if (retval) {
+ MCHP_WARN(pdata, probe, "Error mchp9352 config not found");
+ goto out_disable_resources;
+ }
+
+ /* assume standard, non-shifted, access to HW registers */
+ pdata->ops = &standard_mchp9352_ops;
+ /* apply the right access if shifting is needed */
+ if (pdata->config.shift)
+ pdata->ops = &shifted_mchp9352_ops;
+
+ pm_runtime_enable(&pdev->dev);
+ pm_runtime_get_sync(&pdev->dev);
+
+ retval = mchp9352_init(dev);
+ if (retval < 0)
+ goto out_disable_resources;
+
+ /* configure irq polarity and type before connecting isr */
+ if (pdata->config.irq_polarity == MCHP9352_IRQ_POLARITY_ACTIVE_HIGH)
+ intcfg |= INT_CFG_IRQ_POL_;
+
+ if (pdata->config.irq_type == MCHP9352_IRQ_TYPE_PUSH_PULL)
+ intcfg |= INT_CFG_IRQ_TYPE_;
+
+ if (mchp9352_wait_till_ready(pdata) != 0)
+ goto out_disable_resources;
+
+ mchp9352_reg_write(pdata, INT_CFG, intcfg);
+
+ /* Ensure interrupts are globally disabled before connecting ISR */
+ mchp9352_disable_irq_chip(dev);
+
+ retval = request_irq(dev->irq, mchp9352_irqhandler,
+ irq_flags | IRQF_SHARED, dev->name, dev);
+ if (retval) {
+ MCHP_WARN(pdata, probe,
+ "Unable to claim requested irq: %d", dev->irq);
+ goto out_disable_resources;
+ }
+
+ netif_carrier_off(dev);
+
+ retval = register_netdev(dev);
+ if (retval) {
+ MCHP_WARN(pdata, probe, "Error %i registering device", retval);
+ goto out_free_irq;
+ } else {
+ MCHP_TRACE(pdata, probe,
+ "Network interface: \"%s\"", dev->name);
+ }
+
+ retval = mchp9352_mii_init(pdev, dev);
+ if (retval) {
+ MCHP_WARN(pdata, probe, "Error %i initialising mii", retval);
+ goto out_unregister_netdev_5;
+ }
+
+ spin_lock_irq(&pdata->mac_lock);
+
+ /* Check if mac address has been specified when bringing interface up */
+ if (is_valid_ether_addr(dev->dev_addr)) {
+ mchp9352_set_hw_mac_address(pdata, dev->dev_addr);
+ MCHP_TRACE(pdata, probe,
+ "MAC Address is specified by configuration");
+ } else if (is_valid_ether_addr(pdata->config.mac)) {
+ ether_addr_copy(dev->dev_addr, pdata->config.mac);
+ MCHP_TRACE(pdata, probe,
+ "MAC Address specified by platform data");
+ } else {
+ /* Try reading mac address from device. if EEPROM is present
+ * it will already have been set
+ */
+ mchp_get_mac(dev);
+
+ if (is_valid_ether_addr(dev->dev_addr)) {
+ /* eeprom values are valid so use them */
+ MCHP_TRACE(pdata, probe,
+ "Mac Address is read from LAN9352 EEPROM");
+ } else {
+ /* eeprom values are invalid, generate random MAC */
+ eth_hw_addr_random(dev);
+ mchp9352_set_hw_mac_address(pdata, dev->dev_addr);
+ MCHP_TRACE(pdata, probe,
+ "MAC Address is set to eth_random_addr");
+ }
+ }
+
+ spin_unlock_irq(&pdata->mac_lock);
+
+ netdev_info(dev, "MAC Address: %pM\n", dev->dev_addr);
+ return 0;
+
+out_unregister_netdev_5:
+ unregister_netdev(dev);
+out_free_irq:
+ free_irq(dev->irq, dev);
+out_disable_resources:
+ pm_runtime_put(&pdev->dev);
+ pm_runtime_disable(&pdev->dev);
+ (void)mchp9352_disable_resources(pdev);
+out_enable_resources_fail:
+ mchp9352_free_resources(pdev);
+out_request_resources_fail:
+ iounmap(pdata->ioaddr);
+ free_netdev(dev);
+out_release_io_1:
+ release_mem_region(res->start, resource_size(res));
+out_0:
+
+ return retval;
+}
+
+#ifdef CONFIG_PM
+/* This implementation assumes the devices remains powered on its VDDVARIO
+ * pins during suspend.
+ */
+
+/* TODO: implement freeze/thaw callbacks for hibernation.*/
+
+static int mchp9352_suspend(struct device *dev)
+{
+ struct net_device *ndev = dev_get_drvdata(dev);
+ struct mchp9352_data *pdata = netdev_priv(ndev);
+
+ /* enable wake on LAN, energy detection and the external PME
+ * signal.
+ */
+ mchp9352_reg_write(pdata, PMT_CTRL,
+ PMT_CTRL_PM_MODE_D1_ | PMT_CTRL_WOL_EN_ |
+ PMT_CTRL_ED_EN_ | PMT_CTRL_PME_EN_);
+
+ return 0;
+}
+
+static int mchp9352_resume(struct device *dev)
+{
+ struct net_device *ndev = dev_get_drvdata(dev);
+ struct mchp9352_data *pdata = netdev_priv(ndev);
+ unsigned int to = 100;
+
+ /* Writing any data to the BYTE_TEST register will wake-up the device.
+ */
+ mchp9352_reg_write(pdata, BYTE_TEST, 0);
+
+ /* poll the READY bit in PMT_CTRL. Any other access to the device is
+ * forbidden while this bit isn't set. Try for 100ms and return -EIO
+ * if it failed.
+ */
+ while (!(mchp9352_reg_read(pdata, PMT_CTRL) & PMT_CTRL_READY_) && --to)
+ usleep_range(1000, 2000);
+
+ return (to == 0) ? -EIO : 0;
+}
+
+static const struct dev_pm_ops mchp9352_pm_ops = {
+ .suspend = mchp9352_suspend,
+ .resume = mchp9352_resume,
+};
+
+#define MCHP9352_PM_OPS (&mchp9352_pm_ops)
+
+#else
+#define MCHP9352_PM_OPS NULL
+#endif
+
+#ifdef CONFIG_OF
+static const struct of_device_id mchp9352_dt_ids[] = {
+ { .compatible = "microchip,lan9352", },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, mchp9352_dt_ids);
+#endif
+
+static const struct acpi_device_id mchp9352_acpi_match[] = {
+ { "ARMH9352", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, mchp9352_acpi_match);
+
+static struct platform_driver mchp9352_driver = {
+ .probe = mchp9352_drv_probe,
+ .remove = mchp9352_drv_remove,
+ .driver = {
+ .name = MCHP_CHIPNAME,
+ .pm = MCHP9352_PM_OPS,
+ .of_match_table = of_match_ptr(mchp9352_dt_ids),
+ .acpi_match_table = ACPI_PTR(mchp9352_acpi_match),
+ },
+};
+
+/* Entry point for loading the module */
+static int __init mchp9352_init_module(void)
+{
+ MCHP_INITIALIZE();
+ return platform_driver_register(&mchp9352_driver);
+}
+
+/* entry point for unloading the module */
+static void __exit mchp9352_cleanup_module(void)
+{
+ platform_driver_unregister(&mchp9352_driver);
+}
+
+module_init(mchp9352_init_module);
+module_exit(mchp9352_cleanup_module);
diff --git a/drivers/net/ethernet/microchip/mchp9352.h b/drivers/net/ethernet/microchip/mchp9352.h
new file mode 100644
index 0000000..5532a55
--- /dev/null
+++ b/drivers/net/ethernet/microchip/mchp9352.h
@@ -0,0 +1,443 @@
+/***************************************************************************
+ *
+ * Copyright (C) 2004-2008 SMSC
+ * Copyright (C) 2005-2008 ARM
+ * Copyright (C) 2015-2016 MICROCHIP
+ *
+ * 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; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ ***************************************************************************/
+#ifndef __MCHP9352_H__
+#define __MCHP9352_H__
+
+#include <linux/phy.h>
+#include <linux/if_ether.h>
+
+/* platform_device configuration data, should be assigned to
+ * the platform_device's dev.platform_data
+ */
+struct mchp9352_platform_config {
+ unsigned int irq_polarity;
+ unsigned int irq_type;
+ unsigned int flags;
+ unsigned int shift;
+ phy_interface_t phy_interface;
+ unsigned char mac[ETH_ALEN];
+};
+
+/* Constants for platform_device irq polarity configuration */
+#define MCHP9352_IRQ_POLARITY_ACTIVE_LOW 0
+#define MCHP9352_IRQ_POLARITY_ACTIVE_HIGH 1
+
+/* Constants for platform_device irq type configuration */
+#define MCHP9352_IRQ_TYPE_OPEN_DRAIN 0
+#define MCHP9352_IRQ_TYPE_PUSH_PULL 1
+
+/* Constants for flags */
+#define MCHP9352_USE_16BIT (BIT(0))
+#define MCHP9352_USE_32BIT (BIT(1))
+#define MCHP9352_SAVE_MAC_ADDRESS (BIT(4))
+
+/* MCHP9352_SWAP_FIFO:
+ * Enables software byte swap for fifo data. Should only be used as a
+ * "last resort" in the case of big endian mode on boards with incorrectly
+ * routed data bus to older devices such as LAN9118. Newer devices such as
+ * LAN9221 can handle this in hardware, there are registers to control
+ * this swapping but the driver doesn't currently use them.
+ */
+#define MCHP9352_SWAP_FIFO (BIT(5))
+
+/* This file was originally derived from ../smsc/smsc911x.h */
+
+#define TX_FIFO_LOW_THRESHOLD ((u32)1600)
+#define MCHP9352_EEPROM_SIZE ((u32)128)
+#define USE_DEBUG 0
+
+/* This is the maximum number of packets to be received every
+ * NAPI poll
+ */
+#define MCHP_NAPI_WEIGHT 16
+
+#if USE_DEBUG >= 1
+#define MCHP_WARN(pdata, nlevel, fmt, args...) \
+ netif_warn(pdata, nlevel, (pdata)->dev, \
+ "%s: " fmt "\n", __func__, ##args)
+#else
+#define MCHP_WARN(pdata, nlevel, fmt, args...) \
+ no_printk(fmt "\n", ##args)
+#endif
+
+#if USE_DEBUG >= 2
+#define MCHP_TRACE(pdata, nlevel, fmt, args...) \
+ netif_info(pdata, nlevel, pdata->dev, fmt "\n", ##args)
+#else
+#define MCHP_TRACE(pdata, nlevel, fmt, args...) \
+ no_printk(fmt "\n", ##args)
+#endif
+
+#ifdef CONFIG_DEBUG_SPINLOCK
+#define MCHP_ASSERT_MAC_LOCK(pdata) \
+ WARN_ON_SMP(!spin_is_locked(&pdata->mac_lock))
+#else
+#define MCHP_ASSERT_MAC_LOCK(pdata) do {} while (0)
+#endif /* CONFIG_DEBUG_SPINLOCK */
+
+/* SMSC911x registers and bitfields */
+#define RX_DATA_FIFO 0x00
+
+#define TX_DATA_FIFO 0x20
+#define TX_CMD_A_ON_COMP_ 0x80000000
+#define TX_CMD_A_BUF_END_ALGN_ 0x03000000
+#define TX_CMD_A_4_BYTE_ALGN_ 0x00000000
+#define TX_CMD_A_16_BYTE_ALGN_ 0x01000000
+#define TX_CMD_A_32_BYTE_ALGN_ 0x02000000
+#define TX_CMD_A_DATA_OFFSET_ 0x001F0000
+#define TX_CMD_A_FIRST_SEG_ 0x00002000
+#define TX_CMD_A_LAST_SEG_ 0x00001000
+#define TX_CMD_A_BUF_SIZE_ 0x000007FF
+#define TX_CMD_B_PKT_TAG_ 0xFFFF0000
+#define TX_CMD_B_ADD_CRC_DISABLE_ 0x00002000
+#define TX_CMD_B_DISABLE_PADDING_ 0x00001000
+#define TX_CMD_B_PKT_BYTE_LENGTH_ 0x000007FF
+
+#define RX_STATUS_FIFO 0x40
+#define RX_STS_ES_ 0x00008000
+#define RX_STS_LENGTH_ERR_ 0x00001000
+#define RX_STS_MCAST_ 0x00000400
+#define RX_STS_FRAME_TYPE_ 0x00000020
+#define RX_STS_CRC_ERR_ 0x00000002
+
+#define RX_STATUS_FIFO_PEEK 0x44
+
+#define TX_STATUS_FIFO 0x48
+#define TX_STS_ES_ 0x00008000
+#define TX_STS_LOST_CARRIER_ 0x00000800
+#define TX_STS_NO_CARRIER_ 0x00000400
+#define TX_STS_LATE_COL_ 0x00000200
+#define TX_STS_EXCESS_COL_ 0x00000100
+
+#define TX_STATUS_FIFO_PEEK 0x4C
+
+#define ID_REV 0x50
+#define ID_REV_CHIP_ID_ 0xFFFF0000
+#define ID_REV_REV_ID_ 0x0000FFFF
+
+#define INT_CFG 0x54
+#define INT_CFG_INT_DEAS_ 0xFF000000
+#define INT_CFG_INT_DEAS_CLR_ 0x00004000
+#define INT_CFG_INT_DEAS_STS_ 0x00002000
+#define INT_CFG_IRQ_INT_ 0x00001000
+#define INT_CFG_IRQ_EN_ 0x00000100
+#define INT_CFG_IRQ_POL_ 0x00000010
+#define INT_CFG_IRQ_TYPE_ 0x00000001
+
+#define INT_STS 0x58
+#define INT_STS_SW_INT_ 0x80000000
+#define INT_STS_TXSTOP_INT_ 0x02000000
+#define INT_STS_RXSTOP_INT_ 0x01000000
+#define INT_STS_RXDFH_INT_ 0x00800000
+#define INT_STS_RXDF_INT_ 0x00400000
+#define INT_STS_TX_IOC_ 0x00200000
+#define INT_STS_RXD_INT_ 0x00100000
+#define INT_STS_GPT_INT_ 0x00080000
+#define INT_STS_PHY_INT_ 0x00040000
+#define INT_STS_PME_INT_ 0x00020000
+#define INT_STS_TXSO_ 0x00010000
+#define INT_STS_RWT_ 0x00008000
+#define INT_STS_RXE_ 0x00004000
+#define INT_STS_TXE_ 0x00002000
+#define INT_STS_TDFU_ 0x00000800
+#define INT_STS_TDFO_ 0x00000400
+#define INT_STS_TDFA_ 0x00000200
+#define INT_STS_TSFF_ 0x00000100
+#define INT_STS_TSFL_ 0x00000080
+#define INT_STS_RXDF_ 0x00000040
+#define INT_STS_RDFL_ 0x00000020
+#define INT_STS_RSFF_ 0x00000010
+#define INT_STS_RSFL_ 0x00000008
+#define INT_STS_GPIO2_INT_ 0x00000004
+#define INT_STS_GPIO1_INT_ 0x00000002
+#define INT_STS_GPIO0_INT_ 0x00000001
+
+#define INT_EN 0x5C
+#define INT_EN_SW_INT_EN_ 0x80000000
+#define INT_EN_TXSTOP_INT_EN_ 0x02000000
+#define INT_EN_RXSTOP_INT_EN_ 0x01000000
+#define INT_EN_RXDFH_INT_EN_ 0x00800000
+#define INT_EN_TIOC_INT_EN_ 0x00200000
+#define INT_EN_RXD_INT_EN_ 0x00100000
+#define INT_EN_GPT_INT_EN_ 0x00080000
+#define INT_EN_PHY_INT_EN_ 0x00040000
+#define INT_EN_PME_INT_EN_ 0x00020000
+#define INT_EN_TXSO_EN_ 0x00010000
+#define INT_EN_RWT_EN_ 0x00008000
+#define INT_EN_RXE_EN_ 0x00004000
+#define INT_EN_TXE_EN_ 0x00002000
+#define INT_EN_TDFU_EN_ 0x00000800
+#define INT_EN_TDFO_EN_ 0x00000400
+#define INT_EN_TDFA_EN_ 0x00000200
+#define INT_EN_TSFF_EN_ 0x00000100
+#define INT_EN_TSFL_EN_ 0x00000080
+#define INT_EN_RXDF_EN_ 0x00000040
+#define INT_EN_RDFL_EN_ 0x00000020
+#define INT_EN_RSFF_EN_ 0x00000010
+#define INT_EN_RSFL_EN_ 0x00000008
+#define INT_EN_GPIO2_INT_ 0x00000004
+#define INT_EN_GPIO1_INT_ 0x00000002
+#define INT_EN_GPIO0_INT_ 0x00000001
+
+#define BYTE_TEST 0x64
+
+#define FIFO_INT 0x68
+#define FIFO_INT_TX_AVAIL_LEVEL_ 0xFF000000
+#define FIFO_INT_TX_STS_LEVEL_ 0x00FF0000
+#define FIFO_INT_RX_AVAIL_LEVEL_ 0x0000FF00
+#define FIFO_INT_RX_STS_LEVEL_ 0x000000FF
+
+#define RX_CFG 0x6C
+#define RX_CFG_RX_END_ALGN_ 0xC0000000
+#define RX_CFG_RX_END_ALGN4_ 0x00000000
+#define RX_CFG_RX_END_ALGN16_ 0x40000000
+#define RX_CFG_RX_END_ALGN32_ 0x80000000
+#define RX_CFG_RX_DMA_CNT_ 0x0FFF0000
+#define RX_CFG_RX_DUMP_ 0x00008000
+#define RX_CFG_RXDOFF_ 0x00001F00
+
+#define TX_CFG 0x70
+#define TX_CFG_TXS_DUMP_ 0x00008000
+#define TX_CFG_TXD_DUMP_ 0x00004000
+#define TX_CFG_TXSAO_ 0x00000004
+#define TX_CFG_TX_ON_ 0x00000002
+#define TX_CFG_STOP_TX_ 0x00000001
+
+#define HW_CFG 0x74
+#define HW_CFG_TTM_ 0x00200000
+#define HW_CFG_SF_ 0x00100000
+#define HW_CFG_TX_FIF_SZ_(x) ((((unsigned int)(x)) & 0x0FUL) << 16)
+#define HW_CFG_TR_ 0x00003000
+#define HW_CFG_SRST_ 0x00000001
+
+#define RX_DP_CTRL 0x78
+#define RX_DP_CTRL_RX_FFWD_ 0x80000000
+
+#define RX_FIFO_INF 0x7C
+#define RX_FIFO_INF_RXSUSED_ 0x00FF0000
+#define RX_FIFO_INF_RXDUSED_ 0x0000FFFF
+
+#define TX_FIFO_INF 0x80
+#define TX_FIFO_INF_TSUSED_ 0x00FF0000
+#define TX_FIFO_INF_TDFREE_ 0x0000FFFF
+
+#define PMT_CTRL 0x84
+#define PMT_CTRL_PM_MODE_ 0xE0000000
+#define PMT_CTRL_PM_MODE_D0_ 0x00000000
+#define PMT_CTRL_PM_MODE_D1_ 0x20000000
+#define PMT_CTRL_PM_MODE_D2_ 0x40000000
+#define PMT_CTRL_PM_MODE_D3_ 0x60000000
+
+#define PMT_CTRL_PHY_RST_ 0x00000400
+#define PMT_CTRL_WOL_EN_ 0x00000200
+#define PMT_CTRL_ED_EN_ 0x00000100
+#define PMT_CTRL_PME_TYPE_ 0x00000040
+#define PMT_CTRL_WUPS_ 0x00000030
+#define PMT_CTRL_WUPS_NOWAKE_ 0x00000000
+#define PMT_CTRL_WUPS_ED_ 0x00000010
+#define PMT_CTRL_WUPS_WOL_ 0x00000020
+#define PMT_CTRL_WUPS_MULTI_ 0x00000030
+#define PMT_CTRL_PME_IND_ 0x00000008
+#define PMT_CTRL_PME_POL_ 0x00000004
+#define PMT_CTRL_PME_EN_ 0x00000002
+#define PMT_CTRL_READY_ 0x00000001
+
+#define GPT_CFG 0x8C
+#define GPT_CFG_TIMER_EN_ 0x20000000
+#define GPT_CFG_GPT_LOAD_ 0x0000FFFF
+
+#define GPT_CNT 0x90
+#define GPT_CNT_GPT_CNT_ 0x0000FFFF
+
+#define WORD_SWAP 0x98
+
+#define FREE_RUN 0x9C
+
+#define RX_DROP 0xA0
+
+#define MAC_CSR_CMD 0xA4
+#define MAC_CSR_CMD_CSR_BUSY_ 0x80000000
+#define MAC_CSR_CMD_R_NOT_W_ 0x40000000
+#define MAC_CSR_CMD_CSR_ADDR_ 0x000000FF
+
+#define MAC_CSR_DATA 0xA8
+
+#define AFC_CFG 0xAC
+#define AFC_CFG_AFC_HI_ 0x00FF0000
+#define AFC_CFG_AFC_LO_ 0x0000FF00
+#define AFC_CFG_BACK_DUR_ 0x000000F0
+#define AFC_CFG_FCMULT_ 0x00000008
+#define AFC_CFG_FCBRD_ 0x00000004
+#define AFC_CFG_FCADD_ 0x00000002
+#define AFC_CFG_FCANY_ 0x00000001
+
+#define LAN_REGISTER_EXTENT 0xB4
+
+#define E2P_CMD 0x1B4
+#define E2P_CMD_EPC_BUSY_ 0x80000000
+#define E2P_CMD_EPC_CMD_ 0x70000000
+#define E2P_CMD_EPC_CMD_READ_ 0x00000000
+#define E2P_CMD_EPC_CMD_EWDS_ 0x10000000
+#define E2P_CMD_EPC_CMD_EWEN_ 0x20000000
+#define E2P_CMD_EPC_CMD_WRITE_ 0x30000000
+#define E2P_CMD_EPC_CMD_WRAL_ 0x40000000
+#define E2P_CMD_EPC_CMD_ERASE_ 0x50000000
+#define E2P_CMD_EPC_CMD_ERAL_ 0x60000000
+#define E2P_CMD_EPC_CMD_RELOAD_ 0x70000000
+#define E2P_CMD_EPC_TIMEOUT_ 0x00020000
+#define E2P_CMD_MAC_ADDR_LOADED_ 0x00010000
+#define E2P_CMD_EPC_ADDR_ 0x0000FFFF
+
+#define E2P_DATA 0x1B8
+#define E2P_DATA_EEPROM_DATA_ 0x000000FF
+
+#define LED_CFG 0x1BC
+#define LED_CFG_FUNCTION_(x) ((((unsigned int)(x)) & 0x7UL) << 8)
+#define LED_CFG_ENABLE_(x) ((((unsigned int)(x)) & 0x3FUL) << 0)
+
+#define GPIO_CFG 0x1E0
+#define GPIO_CFG_1588_CHANNEL_SELECT_(x) \
+ ((((unsigned int)(x)) & 0xFFUL) << 24)
+#define GPIO_CFG_1588_INTERRUPT_POLARITY_(x) \
+ ((((unsigned int)(x)) & 0xFFUL) << 16)
+#define GPIO_CFG_1588_OUTPUT_ENABLE_(x) \
+ ((((unsigned int)(x)) & 0xFFUL) << 8)
+#define GPIO_CFG_BUFFER_TYPE_(x) \
+ ((((unsigned int)(x)) & 0xFFUL) << 0)
+
+#define GPIO_DATA_DIR 0x1E4
+#define GPIO_DATA_DIR_DIRECTION_(x) \
+ ((((unsigned int)(x)) & 0xFFUL) << 16)
+#define GPIO_DATA_DIR_DATA_(x) \
+ ((((unsigned int)(x)) & 0xFFUL) << 0)
+
+#define GPIO_INT_STS_EN 0x1E8
+#define GPIO_INT_STS_EN_INTERRUPT_ENABLE_(x) \
+ ((((unsigned int)(x)) & 0xFFUL) << 16)
+#define GPIO_INT_STS_EN_INTERRUPT_(x) \
+ ((((unsigned int)(x)) & 0xFFUL) << 0)
+
+#define RESET_CTL 0x1F8
+#define RESET_CTL_ETHERCAT_RST_ 0x00000040
+#define RESET_CTL_HMAC_RST_ 0x00000020
+#define RESET_CTL_VPHY_1_RST_ 0x00000010
+#define RESET_CTL_VPHY_0_RST_ 0x00000008
+#define RESET_CTL_PHY_B_RST_ 0x00000004
+#define RESET_CTL_PHY_A_RST_ 0x00000002
+#define RESET_CTL_DIGITAL_RST_ 0x00000001
+
+/* MAC Control and Status Register (Indirect Address)
+ * Offset (through the MAC_CSR CMD and DATA port)
+ */
+#define MAC_CR 0x01
+#define MAC_CR_RXALL_ 0x80000000
+#define MAC_CR_HBDIS_ 0x10000000
+#define MAC_CR_RCVOWN_ 0x00800000
+#define MAC_CR_LOOPBK_ 0x00200000
+#define MAC_CR_FDPX_ 0x00100000
+#define MAC_CR_MCPAS_ 0x00080000
+#define MAC_CR_PRMS_ 0x00040000
+#define MAC_CR_INVFILT_ 0x00020000
+#define MAC_CR_PASSBAD_ 0x00010000
+#define MAC_CR_HFILT_ 0x00008000
+#define MAC_CR_HPFILT_ 0x00002000
+#define MAC_CR_LCOLL_ 0x00001000
+#define MAC_CR_BCAST_ 0x00000800
+#define MAC_CR_DISRTY_ 0x00000400
+#define MAC_CR_PADSTR_ 0x00000100
+#define MAC_CR_BOLMT_MASK_ 0x000000C0
+#define MAC_CR_DFCHK_ 0x00000020
+#define MAC_CR_TXEN_ 0x00000008
+#define MAC_CR_RXEN_ 0x00000004
+
+#define ADDRH 0x02
+
+#define ADDRL 0x03
+
+#define HASHH 0x04
+
+#define HASHL 0x05
+
+#define MII_ACC 0x06
+#define MII_ACC_PHY_ADDR_ 0x0000F800
+#define MII_ACC_MIIRINDA_ 0x000007C0
+#define MII_ACC_MII_WRITE_ 0x00000002
+#define MII_ACC_MII_BUSY_ 0x00000001
+
+#define MII_DATA 0x07
+
+#define FLOW 0x08
+#define FLOW_FCPT_ 0xFFFF0000
+#define FLOW_FCPASS_ 0x00000004
+#define FLOW_FCEN_ 0x00000002
+#define FLOW_FCBSY_ 0x00000001
+
+#define VLAN1 0x09
+
+#define VLAN2 0x0A
+
+#define WUFF 0x0B
+
+#define WUCSR 0x0C
+#define WUCSR_GUE_ 0x00000200
+#define WUCSR_WUFR_ 0x00000040
+#define WUCSR_MPR_ 0x00000020
+#define WUCSR_WAKE_EN_ 0x00000004
+#define WUCSR_MPEN_ 0x00000002
+
+/* Phy definitions (vendor-specific)
+ */
+#define LAN9118_PHY_ID 0x00C0001C
+
+#define MII_INTSTS 0x1D
+
+#define MII_INTMSK 0x1E
+#define PHY_INTMSK_AN_RCV_ (BIT(1))
+#define PHY_INTMSK_PDFAULT_ (BIT(2))
+#define PHY_INTMSK_AN_ACK_ (BIT(3))
+#define PHY_INTMSK_LNKDOWN_ (BIT(4))
+#define PHY_INTMSK_RFAULT_ (BIT(5))
+#define PHY_INTMSK_AN_COMP_ (BIT(6))
+#define PHY_INTMSK_ENERGYON_ (BIT(7))
+#define PHY_INTMSK_DEFAULT_ (PHY_INTMSK_ENERGYON_ | \
+ PHY_INTMSK_AN_COMP_ | \
+ PHY_INTMSK_RFAULT_ | \
+ PHY_INTMSK_LNKDOWN_)
+
+#define ADVERTISE_PAUSE_ALL (ADVERTISE_PAUSE_CAP | \
+ ADVERTISE_PAUSE_ASYM)
+
+#define LPA_PAUSE_ALL (LPA_PAUSE_CAP | \
+ LPA_PAUSE_ASYM)
+
+/* Provide hooks to let the arch add to the initialisation procedure
+ * and to override the source of the MAC address.
+ */
+#define MCHP_INITIALIZE() do {} while (0)
+#define mchp_get_mac(dev) mchp9352_read_mac_address((dev))
+
+#ifdef CONFIG_SMSC911X_ARCH_HOOKS
+#include <asm/smsc911x.h>
+#endif
+
+#include <linux/smscphy.h>
+
+#endif /* __MCHP9352_H__ */
--
1.9.1
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