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authorjuhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73>2008-07-21 17:08:14 +0000
committerjuhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73>2008-07-21 17:08:14 +0000
commit546b5ed544503182a9b3e981bc11feebd6042b21 (patch)
tree10ae3895974888be85ce09abee24fe67b5fbd813 /target/linux/ar71xx/files/drivers/net/ag71xx
parent541dcce6ec450a2aceaf1b42b67b16ebfc9730aa (diff)
surprise :p
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11894 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/ar71xx/files/drivers/net/ag71xx')
-rw-r--r--target/linux/ar71xx/files/drivers/net/ag71xx/Kconfig7
-rw-r--r--target/linux/ar71xx/files/drivers/net/ag71xx/Makefile7
-rw-r--r--target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h281
-rw-r--r--target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_ethtool.c55
-rw-r--r--target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c855
-rw-r--r--target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_mii.c436
6 files changed, 1641 insertions, 0 deletions
diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/Kconfig b/target/linux/ar71xx/files/drivers/net/ag71xx/Kconfig
new file mode 100644
index 000000000..8105744e8
--- /dev/null
+++ b/target/linux/ar71xx/files/drivers/net/ag71xx/Kconfig
@@ -0,0 +1,7 @@
+config AG71XX
+ tristate "Atheros AR71xx built-in ethernet mac support"
+ depends on ATHEROS_AR71XX
+ select PHYLIB
+ help
+ If you wish to compile a kernel for AR71xx/91xx and enable
+ ethernet support, then you should always answer Y to this.
diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/Makefile b/target/linux/ar71xx/files/drivers/net/ag71xx/Makefile
new file mode 100644
index 000000000..452ee36cb
--- /dev/null
+++ b/target/linux/ar71xx/files/drivers/net/ag71xx/Makefile
@@ -0,0 +1,7 @@
+#
+# Makefile for the Atheros AR71xx built-in ethernet macs
+#
+
+obj-$(CONFIG_AG71XX) += ag71xx.o
+
+ag71xx-objs := ag71xx_main.o ag71xx_mii.o ag71xx_ethtool.o
diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h
new file mode 100644
index 000000000..e22a7e6d3
--- /dev/null
+++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h
@@ -0,0 +1,281 @@
+/*
+ * Atheros AR71xx built-in ethernet mac driver
+ *
+ * Copyright (C) 2008 Gabor Juhos <juhosg@openwrt.org>
+ * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
+ *
+ * Based on Atheros' AG7100 driver
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#ifndef __AG71XX_H
+#define __AG71XX_H
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/spinlock.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/ethtool.h>
+#include <linux/etherdevice.h>
+#include <linux/phy.h>
+#include <linux/skbuff.h>
+#include <linux/dma-mapping.h>
+
+#include <linux/bitops.h>
+
+#include <asm/mach-ar71xx/ar71xx.h>
+#include <asm/mach-ar71xx/platform.h>
+
+#define ETH_FCS_LEN 4
+
+#define AG71XX_DRV_NAME "ag71xx"
+#define AG71XX_DRV_VERSION "0.3.9"
+
+#define AG71XX_NAPI_TX 1
+
+#define AG71XX_NAPI_WEIGHT 64
+
+#define AG71XX_INT_ERR (AG71XX_INT_RX_BE | AG71XX_INT_TX_BE)
+#define AG71XX_INT_TX (AG71XX_INT_TX_PS)
+#define AG71XX_INT_RX (AG71XX_INT_RX_PR | AG71XX_INT_RX_OF)
+
+#ifdef AG71XX_NAPI_TX
+#define AG71XX_INT_POLL (AG71XX_INT_RX | AG71XX_INT_TX)
+#define AG71XX_INT_INIT (AG71XX_INT_ERR | AG71XX_INT_POLL)
+#else
+#define AG71XX_INT_POLL (AG71XX_INT_RX)
+#define AG71XX_INT_INIT (AG71XX_INT_ERR | AG71XX_INT_POLL | AG71XX_INT_TX)
+#endif
+
+#define AG71XX_TX_FIFO_LEN 2048
+#define AG71XX_TX_MTU_LEN 1536
+#define AG71XX_RX_PKT_RESERVE 64
+#define AG71XX_RX_PKT_SIZE \
+ (AG71XX_RX_PKT_RESERVE + ETH_HLEN + ETH_FRAME_LEN + ETH_FCS_LEN)
+
+#define AG71XX_TX_RING_SIZE 64
+#define AG71XX_TX_THRES_STOP (AG71XX_TX_RING_SIZE - 4)
+#define AG71XX_TX_THRES_WAKEUP \
+ (AG71XX_TX_RING_SIZE - (AG71XX_TX_RING_SIZE / 4))
+
+#define AG71XX_RX_RING_SIZE 128
+
+#undef DEBUG
+#ifdef DEBUG
+#define DBG(fmt, args...) printk(KERN_DEBUG fmt, ## args)
+#else
+#define DBG(fmt, args...) do {} while (0)
+#endif
+
+#define ag71xx_assert(_cond) \
+do { \
+ if (_cond) \
+ break; \
+ printk("%s,%d: assertion failed\n", __FILE__, __LINE__); \
+ BUG(); \
+} while (0)
+
+struct ag71xx_desc {
+ u32 data;
+ u32 ctrl;
+#define DESC_EMPTY BIT(31)
+#define DESC_MORE BIT(24)
+#define DESC_PKTLEN_M 0x1fff
+ u32 next;
+};
+
+struct ag71xx_buf {
+ struct sk_buff *skb;
+};
+
+struct ag71xx_ring {
+ struct ag71xx_buf *buf;
+ struct ag71xx_desc *descs;
+ dma_addr_t descs_dma;
+ unsigned int curr;
+ unsigned int dirty;
+ unsigned int size;
+};
+
+struct ag71xx {
+ void __iomem *mac_base;
+ void __iomem *mii_ctrl;
+
+ spinlock_t lock;
+ struct platform_device *pdev;
+ struct net_device *dev;
+ struct napi_struct napi;
+
+ struct ag71xx_ring rx_ring;
+ struct ag71xx_ring tx_ring;
+
+ struct phy_device *phy_dev;
+ struct mii_bus mii_bus;
+
+ unsigned int link;
+ unsigned int speed;
+ int duplex;
+};
+
+extern struct ethtool_ops ag71xx_ethtool_ops;
+
+extern int ag71xx_mdio_init(struct ag71xx *ag, int id);
+extern void ag71xx_mdio_cleanup(struct ag71xx *ag);
+extern int ag71xx_mii_peek(struct ag71xx *ag);
+extern void ag71xx_mii_ctrl_set_if(struct ag71xx *ag, unsigned int mii_if);
+extern void ag71xx_mii_ctrl_set_speed(struct ag71xx *ag, unsigned int speed);
+extern void ag71xx_link_update(struct ag71xx *ag);
+
+static inline struct ag71xx_platform_data *ag71xx_get_pdata(struct ag71xx *ag)
+{
+ return ag->pdev->dev.platform_data;
+}
+
+static inline void ag71xx_wr(struct ag71xx *ag, unsigned reg, u32 value)
+{
+ __raw_writel(value, ag->mac_base + reg);
+}
+
+static inline u32 ag71xx_rr(struct ag71xx *ag, unsigned reg)
+{
+ return __raw_readl(ag->mac_base + reg);
+}
+
+static inline void ag71xx_sb(struct ag71xx *ag, unsigned reg, u32 mask)
+{
+ void __iomem *r = ag->mac_base + reg;
+
+ __raw_writel(__raw_readl(r) | mask, r);
+}
+
+static inline void ag71xx_cb(struct ag71xx *ag, unsigned reg, u32 mask)
+{
+ void __iomem *r = ag->mac_base + reg;
+
+ __raw_writel(__raw_readl(r) & ~mask, r);
+}
+
+static inline int ag71xx_desc_empty(struct ag71xx_desc *desc)
+{
+ return ((desc->ctrl & DESC_EMPTY) != 0);
+}
+
+static inline int ag71xx_desc_pktlen(struct ag71xx_desc *desc)
+{
+ return (desc->ctrl & DESC_PKTLEN_M);
+}
+
+/* Register offsets */
+#define AG71XX_REG_MAC_CFG1 0x0000
+#define AG71XX_REG_MAC_CFG2 0x0004
+#define AG71XX_REG_MAC_IPG 0x0008
+#define AG71XX_REG_MAC_HDX 0x000c
+#define AG71XX_REG_MAC_MFL 0x0010
+#define AG71XX_REG_MII_CFG 0x0020
+#define AG71XX_REG_MII_CMD 0x0024
+#define AG71XX_REG_MII_ADDR 0x0028
+#define AG71XX_REG_MII_CTRL 0x002c
+#define AG71XX_REG_MII_STATUS 0x0030
+#define AG71XX_REG_MII_IND 0x0034
+#define AG71XX_REG_MAC_IFCTL 0x0038
+#define AG71XX_REG_MAC_ADDR1 0x0040
+#define AG71XX_REG_MAC_ADDR2 0x0044
+#define AG71XX_REG_FIFO_CFG0 0x0048
+#define AG71XX_REG_FIFO_CFG1 0x004c
+#define AG71XX_REG_FIFO_CFG2 0x0050
+#define AG71XX_REG_FIFO_CFG3 0x0054
+#define AG71XX_REG_FIFO_CFG4 0x0058
+#define AG71XX_REG_FIFO_CFG5 0x005c
+#define AG71XX_REG_FIFO_RAM0 0x0060
+#define AG71XX_REG_FIFO_RAM1 0x0064
+#define AG71XX_REG_FIFO_RAM2 0x0068
+#define AG71XX_REG_FIFO_RAM3 0x006c
+#define AG71XX_REG_FIFO_RAM4 0x0070
+#define AG71XX_REG_FIFO_RAM5 0x0074
+#define AG71XX_REG_FIFO_RAM6 0x0078
+#define AG71XX_REG_FIFO_RAM7 0x007c
+
+#define AG71XX_REG_TX_CTRL 0x0180
+#define AG71XX_REG_TX_DESC 0x0184
+#define AG71XX_REG_TX_STATUS 0x0188
+#define AG71XX_REG_RX_CTRL 0x018c
+#define AG71XX_REG_RX_DESC 0x0190
+#define AG71XX_REG_RX_STATUS 0x0194
+#define AG71XX_REG_INT_ENABLE 0x0198
+#define AG71XX_REG_INT_STATUS 0x019c
+
+#define MAC_CFG1_TXE BIT(0)
+#define MAC_CFG1_STX BIT(1)
+#define MAC_CFG1_RXE BIT(2)
+#define MAC_CFG1_SRX BIT(3)
+#define MAC_CFG1_LB BIT(8)
+#define MAC_CFG1_SR BIT(31)
+
+#define MAC_CFG2_FDX BIT(0)
+#define MAC_CFG2_CRC_EN BIT(1)
+#define MAC_CFG2_PAD_CRC_EN BIT(2)
+#define MAC_CFG2_LEN_CHECK BIT(4)
+#define MAC_CFG2_HUGE_FRAME_EN BIT(5)
+#define MAC_CFG2_IF_1000 BIT(9)
+#define MAC_CFG2_IF_10_100 BIT(8)
+
+#define AG71XX_INT_TX_PS BIT(0)
+#define AG71XX_INT_TX_UR BIT(1)
+#define AG71XX_INT_TX_BE BIT(3)
+#define AG71XX_INT_RX_PR BIT(4)
+#define AG71XX_INT_RX_OF BIT(6)
+#define AG71XX_INT_RX_BE BIT(7)
+
+#define MAC_IFCTL_SPEED BIT(16)
+
+#define MII_CFG_CLK_DIV_4 0
+#define MII_CFG_CLK_DIV_6 2
+#define MII_CFG_CLK_DIV_8 3
+#define MII_CFG_CLK_DIV_10 4
+#define MII_CFG_CLK_DIV_14 5
+#define MII_CFG_CLK_DIV_20 6
+#define MII_CFG_CLK_DIV_28 7
+
+#define MII_CMD_WRITE 0x0
+#define MII_CMD_READ 0x1
+#define MII_ADDR_S 8
+#define MII_IND_BUSY BIT(0)
+#define MII_IND_INVALID BIT(2)
+
+#define TX_CTRL_TXE BIT(0)
+
+#define TX_STATUS_PS BIT(0)
+#define TX_STATUS_UR BIT(1)
+#define TX_STATUS_BE BIT(3)
+
+#define RX_CTRL_RXE BIT(0)
+
+#define RX_STATUS_PR BIT(0)
+#define RX_STATUS_OF BIT(1)
+#define RX_STATUS_BE BIT(3)
+
+#define FIFO_CFG5_BYTE_PER_CLK BIT(19)
+
+#define MII_CTRL_SPEED_S 4
+#define MII_CTRL_SPEED_M 3
+#define MII_CTRL_SPEED_10 0
+#define MII_CTRL_SPEED_100 1
+#define MII_CTRL_SPEED_1000 2
+
+static inline void ag71xx_int_enable(struct ag71xx *ag, u32 ints)
+{
+ ag71xx_sb(ag, AG71XX_REG_INT_ENABLE, ints);
+}
+
+static inline void ag71xx_int_disable(struct ag71xx *ag, u32 ints)
+{
+ ag71xx_cb(ag, AG71XX_REG_INT_ENABLE, ints);
+}
+
+#endif /* _AG71XX_H */
diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_ethtool.c b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_ethtool.c
new file mode 100644
index 000000000..9aa7b3a23
--- /dev/null
+++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_ethtool.c
@@ -0,0 +1,55 @@
+/*
+ * Atheros AR71xx built-in ethernet mac driver
+ *
+ * Copyright (C) 2008 Gabor Juhos <juhosg@openwrt.org>
+ * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
+ *
+ * Based on Atheros' AG7100 driver
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#include "ag71xx.h"
+
+static int ag71xx_ethtool_get_settings(struct net_device *dev,
+ struct ethtool_cmd *cmd)
+{
+ struct ag71xx *ag = netdev_priv(dev);
+ struct phy_device *phydev = ag->phy_dev;
+
+ if (!phydev)
+ return -ENODEV;
+
+ return phy_ethtool_gset(phydev, cmd);
+}
+
+static int ag71xx_ethtool_set_settings(struct net_device *dev,
+ struct ethtool_cmd *cmd)
+{
+ struct ag71xx *ag = netdev_priv(dev);
+ struct phy_device *phydev = ag->phy_dev;
+
+ if (!phydev)
+ return -ENODEV;
+
+ return phy_ethtool_sset(phydev, cmd);
+}
+
+static void ag71xx_ethtool_get_drvinfo(struct net_device *dev,
+ struct ethtool_drvinfo *info)
+{
+ struct ag71xx *ag = netdev_priv(dev);
+
+ strcpy(info->driver, ag->pdev->dev.driver->name);
+ strcpy(info->version, AG71XX_DRV_VERSION);
+ strcpy(info->bus_info, ag->pdev->dev.bus_id);
+}
+
+struct ethtool_ops ag71xx_ethtool_ops = {
+ .set_settings = ag71xx_ethtool_set_settings,
+ .get_settings = ag71xx_ethtool_get_settings,
+ .get_drvinfo = ag71xx_ethtool_get_drvinfo,
+ .get_link = ethtool_op_get_link,
+};
diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
new file mode 100644
index 000000000..d4eebda05
--- /dev/null
+++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
@@ -0,0 +1,855 @@
+/*
+ * Atheros AR71xx built-in ethernet mac driver
+ *
+ * Copyright (C) 2008 Gabor Juhos <juhosg@openwrt.org>
+ * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
+ *
+ * Based on Atheros' AG7100 driver
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#include "ag71xx.h"
+
+static void ag71xx_dump_regs(struct ag71xx *ag)
+{
+ DBG("%s: mac_cfg1=%08x, mac_cfg2=%08x, ipg=%08x, hdx=%08x, mfl=%08x\n",
+ ag->dev->name,
+ ag71xx_rr(ag, AG71XX_REG_MAC_CFG1),
+ ag71xx_rr(ag, AG71XX_REG_MAC_CFG2),
+ ag71xx_rr(ag, AG71XX_REG_MAC_IPG),
+ ag71xx_rr(ag, AG71XX_REG_MAC_HDX),
+ ag71xx_rr(ag, AG71XX_REG_MAC_MFL));
+ DBG("%s: mii_cfg=%08x, mii_cmd=%08x, mii_addr=%08x\n",
+ ag->dev->name,
+ ag71xx_rr(ag, AG71XX_REG_MII_CFG),
+ ag71xx_rr(ag, AG71XX_REG_MII_CMD),
+ ag71xx_rr(ag, AG71XX_REG_MII_ADDR));
+ DBG("%s: mii_ctrl=%08x, mii_status=%08x, mii_ind=%08x\n",
+ ag->dev->name,
+ ag71xx_rr(ag, AG71XX_REG_MII_CTRL),
+ ag71xx_rr(ag, AG71XX_REG_MII_STATUS),
+ ag71xx_rr(ag, AG71XX_REG_MII_IND));
+ DBG("%s: mac_ifctl=%08x, mac_addr1=%08x, mac_addr2=%08x\n",
+ ag->dev->name,
+ ag71xx_rr(ag, AG71XX_REG_MAC_IFCTL),
+ ag71xx_rr(ag, AG71XX_REG_MAC_ADDR1),
+ ag71xx_rr(ag, AG71XX_REG_MAC_ADDR2));
+ DBG("%s: fifo_cfg0=%08x, fifo_cfg1=%08x, fifo_cfg2=%08x\n",
+ ag->dev->name,
+ ag71xx_rr(ag, AG71XX_REG_FIFO_CFG0),
+ ag71xx_rr(ag, AG71XX_REG_FIFO_CFG1),
+ ag71xx_rr(ag, AG71XX_REG_FIFO_CFG2));
+ DBG("%s: fifo_cfg3=%08x, fifo_cfg3=%08x, fifo_cfg5=%08x\n",
+ ag->dev->name,
+ ag71xx_rr(ag, AG71XX_REG_FIFO_CFG3),
+ ag71xx_rr(ag, AG71XX_REG_FIFO_CFG4),
+ ag71xx_rr(ag, AG71XX_REG_FIFO_CFG5));
+}
+
+static void ag71xx_ring_free(struct ag71xx_ring *ring)
+{
+ kfree(ring->buf);
+
+ if (ring->descs)
+ dma_free_coherent(NULL, ring->size * sizeof(*ring->descs),
+ ring->descs, ring->descs_dma);
+}
+
+static int ag71xx_ring_alloc(struct ag71xx_ring *ring, unsigned int size)
+{
+ int err;
+
+ ring->descs = dma_alloc_coherent(NULL, size * sizeof(*ring->descs),
+ &ring->descs_dma,
+ GFP_ATOMIC);
+ if (!ring->descs) {
+ err = -ENOMEM;
+ goto err;
+ }
+
+ ring->size = size;
+
+ ring->buf = kzalloc(size * sizeof(*ring->buf), GFP_KERNEL);
+ if (!ring->buf) {
+ err = -ENOMEM;
+ goto err;
+ }
+
+ return 0;
+
+err:
+ return err;
+}
+
+static void ag71xx_ring_tx_clean(struct ag71xx *ag)
+{
+ struct ag71xx_ring *ring = &ag->tx_ring;
+ struct net_device *dev = ag->dev;
+
+ while (ring->curr != ring->dirty) {
+ u32 i = ring->dirty % AG71XX_TX_RING_SIZE;
+
+ if (!ag71xx_desc_empty(&ring->descs[i])) {
+ ring->descs[i].ctrl = 0;
+ dev->stats.tx_errors++;
+ }
+
+ if (ring->buf[i].skb)
+ dev_kfree_skb_any(ring->buf[i].skb);
+
+ ring->buf[i].skb = NULL;
+
+ ring->dirty++;
+ }
+
+ /* flush descriptors */
+ wmb();
+
+}
+
+static void ag71xx_ring_tx_init(struct ag71xx *ag)
+{
+ struct ag71xx_ring *ring = &ag->tx_ring;
+ int i;
+
+ for (i = 0; i < AG71XX_TX_RING_SIZE; i++) {
+ ring->descs[i].next = (u32) (ring->descs_dma +
+ sizeof(*ring->descs) * ((i + 1) % AG71XX_TX_RING_SIZE));
+
+ ring->descs[i].ctrl = DESC_EMPTY;
+ ring->buf[i].skb = NULL;
+ }
+
+ /* flush descriptors */
+ wmb();
+
+ ring->curr = 0;
+ ring->dirty = 0;
+}
+
+static void ag71xx_ring_rx_clean(struct ag71xx *ag)
+{
+ struct ag71xx_ring *ring = &ag->rx_ring;
+ int i;
+
+ if (!ring->buf)
+ return;
+
+ for (i = 0; i < AG71XX_RX_RING_SIZE; i++)
+ if (ring->buf[i].skb)
+ kfree_skb(ring->buf[i].skb);
+
+}
+
+static int ag71xx_ring_rx_init(struct ag71xx *ag)
+{
+ struct ag71xx_ring *ring = &ag->rx_ring;
+ unsigned int i;
+ int ret;
+
+ ret = 0;
+ for (i = 0; i < AG71XX_RX_RING_SIZE; i++)
+ ring->descs[i].next = (u32) (ring->descs_dma +
+ sizeof(*ring->descs) * ((i + 1) % AG71XX_RX_RING_SIZE));
+
+ for (i = 0; i < AG71XX_RX_RING_SIZE; i++) {
+ struct sk_buff *skb;
+
+ skb = dev_alloc_skb(AG71XX_RX_PKT_SIZE);
+ if (!skb) {
+ ret = -ENOMEM;
+ break;
+ }
+
+ skb->dev = ag->dev;
+ skb_reserve(skb, AG71XX_RX_PKT_RESERVE);
+
+ ring->buf[i].skb = skb;
+ ring->descs[i].data = virt_to_phys(skb->data);
+ ring->descs[i].ctrl = DESC_EMPTY;
+ }
+
+ /* flush descriptors */
+ wmb();
+
+ ring->curr = 0;
+ ring->dirty = 0;
+
+ return ret;
+}
+
+static int ag71xx_ring_rx_refill(struct ag71xx *ag)
+{
+ struct ag71xx_ring *ring = &ag->rx_ring;
+ unsigned int count;
+
+ count = 0;
+ for (; ring->curr - ring->dirty > 0; ring->dirty++) {
+ unsigned int i;
+
+ i = ring->dirty % AG71XX_RX_RING_SIZE;
+
+ if (ring->buf[i].skb == NULL) {
+ struct sk_buff *skb;
+
+ skb = dev_alloc_skb(AG71XX_RX_PKT_SIZE);
+ if (skb == NULL) {
+ printk(KERN_ERR "%s: no memory for skb\n",
+ ag->dev->name);
+ break;
+ }
+
+ skb_reserve(skb, AG71XX_RX_PKT_RESERVE);
+ skb->dev = ag->dev;
+ ring->buf[i].skb = skb;
+ ring->descs[i].data = virt_to_phys(skb->data);
+ }
+
+ ring->descs[i].ctrl = DESC_EMPTY;
+ count++;
+ }
+
+ /* flush descriptors */
+ wmb();
+
+ DBG("%s: %u rx descriptors refilled\n", ag->dev->name, count);
+
+ return count;
+}
+
+static int ag71xx_rings_init(struct ag71xx *ag)
+{
+ int ret;
+
+ ret = ag71xx_ring_alloc(&ag->tx_ring, AG71XX_TX_RING_SIZE);
+ if (ret)
+ return ret;
+
+ ag71xx_ring_tx_init(ag);
+
+ ret = ag71xx_ring_alloc(&ag->rx_ring, AG71XX_RX_RING_SIZE);
+ if (ret)
+ return ret;
+
+ ret = ag71xx_ring_rx_init(ag);
+ return ret;
+}
+
+static void ag71xx_rings_cleanup(struct ag71xx *ag)
+{
+ ag71xx_ring_rx_clean(ag);
+ ag71xx_ring_free(&ag->rx_ring);
+
+ ag71xx_ring_tx_clean(ag);
+ ag71xx_ring_free(&ag->tx_ring);
+}
+
+static void ag71xx_hw_set_macaddr(struct ag71xx *ag, unsigned char *mac)
+{
+ u32 t;
+
+ t = (((u32) mac[0]) << 24) | (((u32) mac[1]) << 16)
+ | (((u32) mac[2]) << 8) | ((u32) mac[2]);
+
+ ag71xx_wr(ag, AG71XX_REG_MAC_ADDR1, t);
+
+ t = (((u32) mac[4]) << 24) | (((u32) mac[5]) << 16);
+ ag71xx_wr(ag, AG71XX_REG_MAC_ADDR2, t);
+}
+
+#define MAC_CFG1_INIT (MAC_CFG1_RXE | MAC_CFG1_TXE | MAC_CFG1_SRX \
+ | MAC_CFG1_STX)
+
+static void ag71xx_hw_init(struct ag71xx *ag)
+{
+ struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
+
+ ag71xx_sb(ag, AG71XX_REG_MAC_CFG1, MAC_CFG1_SR);
+ udelay(20);
+
+ ar71xx_device_stop(pdata->reset_bit);
+ mdelay(100);
+ ar71xx_device_start(pdata->reset_bit);
+ mdelay(100);
+
+ ag71xx_wr(ag, AG71XX_REG_MAC_CFG1, MAC_CFG1_INIT);
+
+ /* TODO: set max packet size */
+
+ ag71xx_sb(ag, AG71XX_REG_MAC_CFG2,
+ MAC_CFG2_PAD_CRC_EN | MAC_CFG2_LEN_CHECK);
+
+ ag71xx_wr(ag, AG71XX_REG_FIFO_CFG0, 0x00001f00);
+
+ ag71xx_mii_ctrl_set_if(ag, pdata->mii_if);
+
+ ag71xx_wr(ag, AG71XX_REG_MII_CFG, MII_CFG_CLK_DIV_28);
+
+ ag71xx_wr(ag, AG71XX_REG_FIFO_CFG1, 0x0fff0000);
+ ag71xx_wr(ag, AG71XX_REG_FIFO_CFG2, 0x00001fff);
+ ag71xx_wr(ag, AG71XX_REG_FIFO_CFG4, 0x0000ffff);
+ ag71xx_wr(ag, AG71XX_REG_FIFO_CFG5, 0x0007ffef);
+}
+
+static void ag71xx_hw_start(struct ag71xx *ag)
+{
+ /* start RX engine */
+ ag71xx_wr(ag, AG71XX_REG_RX_CTRL, RX_CTRL_RXE);
+
+ /* enable interrupts */
+ ag71xx_wr(ag, AG71XX_REG_INT_ENABLE, AG71XX_INT_INIT);
+}
+
+static void ag71xx_hw_stop(struct ag71xx *ag)
+{
+ /* stop RX and TX */
+ ag71xx_wr(ag, AG71XX_REG_RX_CTRL, 0);
+ ag71xx_wr(ag, AG71XX_REG_TX_CTRL, 0);
+
+ /* disable all interrupts */
+ ag71xx_wr(ag, AG71XX_REG_INT_ENABLE, 0);
+}
+
+static int ag71xx_open(struct net_device *dev)
+{
+ struct ag71xx *ag = netdev_priv(dev);
+ int ret;
+
+ ret = ag71xx_rings_init(ag);
+ if (ret)
+ goto err;
+
+ napi_enable(&ag->napi);
+
+ netif_carrier_off(dev);
+ if (ag->phy_dev) {
+ phy_start(ag->phy_dev);
+ } else {
+ ag->duplex = DUPLEX_FULL;
+ ag->speed = SPEED_100;
+ ag->link = 1;
+ ag71xx_link_update(ag);
+ }
+
+ ag71xx_wr(ag, AG71XX_REG_TX_DESC, ag->tx_ring.descs_dma);
+ ag71xx_wr(ag, AG71XX_REG_RX_DESC, ag->rx_ring.descs_dma);
+
+ ag71xx_hw_set_macaddr(ag, dev->dev_addr);
+
+ ag71xx_hw_start(ag);
+
+ netif_start_queue(dev);
+
+ return 0;
+
+err:
+ ag71xx_rings_cleanup(ag);
+ return ret;
+}
+
+static int ag71xx_stop(struct net_device *dev)
+{
+ struct ag71xx *ag = netdev_priv(dev);
+ unsigned long flags;
+
+ spin_lock_irqsave(&ag->lock, flags);
+
+ netif_stop_queue(dev);
+
+ ag71xx_hw_stop(ag);
+
+ netif_carrier_off(dev);
+ if (ag->phy_dev) {
+ phy_stop(ag->phy_dev);
+ } else {
+ ag->duplex = -1;
+ ag->link = 0;
+ ag->speed = 0;
+ ag71xx_link_update(ag);
+ }
+
+ napi_disable(&ag->napi);
+
+ spin_unlock_irqrestore(&ag->lock, flags);
+
+ ag71xx_rings_cleanup(ag);
+
+ return 0;
+}
+
+static int ag71xx_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct ag71xx *ag = netdev_priv(dev);
+ struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
+ struct ag71xx_ring *ring = &ag->tx_ring;
+ struct ag71xx_desc *desc;
+ unsigned long flags;
+ int i;
+
+ i = ring->curr % AG71XX_TX_RING_SIZE;
+ desc = &ring->descs[i];
+
+ spin_lock_irqsave(&ag->lock, flags);
+ ar71xx_ddr_flush(pdata->flush_reg);
+ spin_unlock_irqrestore(&ag->lock, flags);
+
+ if (!ag71xx_desc_empty(desc))
+ goto err_drop;
+
+ if (skb->len <= 0) {
+ DBG("%s: packet len is too small\n", ag->dev->name);
+ goto err_drop;
+ }
+
+ dma_cache_wback_inv((unsigned long)skb->data, skb->len);
+
+ ring->buf[i].skb = skb;
+
+ /* setup descriptor fields */
+ desc->data = virt_to_phys(skb->data);
+ desc->ctrl = (skb->len & DESC_PKTLEN_M);
+
+ /* flush descriptor */
+ wmb();
+
+ ring->curr++;
+ if (ring->curr == (ring->dirty + AG71XX_TX_THRES_STOP)) {
+ DBG("%s: tx queue full\n", ag->dev->name);
+ netif_stop_queue(dev);
+ }
+
+ DBG("%s: packet injected into TX queue\n", ag->dev->name);
+
+ /* enable TX engine */
+ ag71xx_wr(ag, AG71XX_REG_TX_CTRL, TX_CTRL_TXE);
+
+ dev->trans_start = jiffies;
+
+ return 0;
+
+err_drop:
+ dev->stats.tx_dropped++;
+
+ dev_kfree_skb(skb);
+ return 0;
+}
+
+static int ag71xx_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+{
+ struct mii_ioctl_data *data = (struct mii_ioctl_data *) &ifr->ifr_data;
+ struct ag71xx *ag = netdev_priv(dev);
+ int ret;
+
+ switch (cmd) {
+ case SIOCETHTOOL:
+ if (ag->phy_dev == NULL)
+ break;
+
+ spin_lock_irq(&ag->lock);
+ ret = phy_ethtool_ioctl(ag->phy_dev, (void *) ifr->ifr_data);
+ spin_unlock_irq(&ag->lock);
+ return ret;
+
+ case SIOCSIFHWADDR:
+ if (copy_from_user
+ (dev->dev_addr, ifr->ifr_data, sizeof(dev->dev_addr)))
+ return -EFAULT;
+ return 0;
+
+ case SIOCGIFHWADDR:
+ if (copy_to_user
+ (ifr->ifr_data, dev->dev_addr, sizeof(dev->dev_addr)))
+ return -EFAULT;
+ return 0;
+
+ case SIOCGMIIPHY:
+ case SIOCGMIIREG:
+ case SIOCSMIIREG:
+ if (ag->phy_dev == NULL)
+ break;
+
+ return phy_mii_ioctl(ag->phy_dev, data, cmd);
+
+ default:
+ break;
+ }
+
+ return -EOPNOTSUPP;
+}
+
+static void ag71xx_tx_packets(struct ag71xx *ag)
+{
+ struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
+ struct ag71xx_ring *ring = &ag->tx_ring;
+ unsigned int sent;
+
+ DBG("%s: processing TX ring\n", ag->dev->name);
+
+#ifdef AG71XX_NAPI_TX
+ ar71xx_ddr_flush(pdata->flush_reg);
+#endif
+
+ sent = 0;
+ while (ring->dirty != ring->curr) {
+ unsigned int i = ring->dirty % AG71XX_TX_RING_SIZE;
+ struct ag71xx_desc *desc = &ring->descs[i];
+ struct sk_buff *skb = ring->buf[i].skb;
+
+ if (!ag71xx_desc_empty(desc))
+ break;
+
+ ag71xx_wr(ag, AG71XX_REG_TX_STATUS, TX_STATUS_PS);
+
+ ag->dev->stats.tx_bytes += skb->len;
+ ag->dev->stats.tx_packets++;
+
+ dev_kfree_skb_any(skb);
+ ring->buf[i].skb = NULL;
+
+ ring->dirty++;
+ sent++;
+ }
+
+ DBG("%s: %d packets sent out\n", ag->dev->name, sent);
+
+ if ((ring->curr - ring->dirty) < AG71XX_TX_THRES_WAKEUP)
+ netif_wake_queue(ag->dev);
+
+}
+
+static int ag71xx_rx_packets(struct ag71xx *ag, int limit)
+{
+ struct net_device *dev = ag->dev;
+ struct ag71xx_ring *ring = &ag->rx_ring;
+#ifndef AG71XX_NAPI_TX
+ struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
+ unsigned long flags;
+#endif
+ int done = 0;
+
+#ifndef AG71XX_NAPI_TX
+ spin_lock_irqsave(&ag->lock, flags);
+ ar71xx_ddr_flush(pdata->flush_reg);
+ spin_unlock_irqrestore(&ag->lock, flags);
+#endif
+
+ DBG("%s: rx packets, limit=%d, curr=%u, dirty=%u\n",
+ dev->name, limit, ring->curr, ring->dirty);
+
+ while (done < limit) {
+ unsigned int i = ring->curr % AG71XX_RX_RING_SIZE;
+ struct ag71xx_desc *desc = &ring->descs[i];
+ struct sk_buff *skb;
+ int pktlen;
+
+ if (ag71xx_desc_empty(desc))
+ break;
+
+ if ((ring->dirty + AG71XX_RX_RING_SIZE) == ring->curr) {
+ ag71xx_assert(0);
+ break;
+ }
+
+ skb = ring->buf[i].skb;
+ pktlen = ag71xx_desc_pktlen(desc);
+ pktlen -= ETH_FCS_LEN;
+
+ /* TODO: move it into the refill function */
+ dma_cache_wback_inv((unsigned long)skb->data, pktlen);
+ skb_put(skb, pktlen);
+
+ skb->dev = dev;
+ skb->protocol = eth_type_trans(skb, dev);
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+
+ netif_receive_skb(skb);
+
+ dev->last_rx = jiffies;
+ dev->stats.rx_packets++;
+ dev->stats.rx_bytes += pktlen;
+
+ ring->buf[i].skb = NULL;
+ done++;
+
+ ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_PR);
+
+ ring->curr++;
+ if ((ring->curr - ring->dirty) > (AG71XX_RX_RING_SIZE / 4))
+ ag71xx_ring_rx_refill(ag);
+ }
+
+ ag71xx_ring_rx_refill(ag);
+
+ DBG("%s: rx finish, curr=%u, dirty=%u, done=%d\n",
+ dev->name, ring->curr, ring->dirty, done);
+
+ return done;
+}
+
+static int ag71xx_poll(struct napi_struct *napi, int limit)
+{
+ struct ag71xx *ag = container_of(napi, struct ag71xx, napi);
+#ifdef AG71XX_NAPI_TX
+ struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
+#endif
+ struct net_device *dev = ag->dev;
+ unsigned long flags;
+ u32 status;
+ int done;
+
+#ifdef AG71XX_NAPI_TX
+ ar71xx_ddr_flush(pdata->flush_reg);
+ ag71xx_tx_packets(ag);
+#endif
+
+ DBG("%s: processing RX ring\n", dev->name);
+ done = ag71xx_rx_packets(ag, limit);
+
+ /* TODO: add OOM handler */
+
+ status = ag71xx_rr(ag, AG71XX_REG_INT_STATUS);
+ status &= AG71XX_INT_POLL;
+
+ if ((done < limit) && (!status)) {
+ DBG("%s: disable polling mode, done=%d, status=%x\n",
+ dev->name, done, status);
+
+ netif_rx_complete(dev, napi);
+
+ /* enable interrupts */
+ spin_lock_irqsave(&ag->lock, flags);
+ ag71xx_int_enable(ag, AG71XX_INT_POLL);
+ spin_unlock_irqrestore(&ag->lock, flags);
+ return 0;
+ }
+
+ if (status & AG71XX_INT_RX_OF) {
+ printk(KERN_ALERT "%s: rx owerflow, restarting dma\n",
+ dev->name);
+
+ /* ack interrupt */
+ ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_OF);
+ /* restart RX */
+ ag71xx_wr(ag, AG71XX_REG_RX_CTRL, RX_CTRL_RXE);
+ }
+
+ DBG("%s: stay in polling mode, done=%d, status=%x\n",
+ dev->name, done, status);
+ return 1;
+}
+
+static irqreturn_t ag71xx_interrupt(int irq, void *dev_id)
+{
+ struct net_device *dev = dev_id;
+ struct ag71xx *ag = netdev_priv(dev);
+ u32 status;
+
+ status = ag71xx_rr(ag, AG71XX_REG_INT_STATUS);
+ status &= ag71xx_rr(ag, AG71XX_REG_INT_ENABLE);
+
+ if (unlikely(!status))
+ return IRQ_NONE;
+
+ if (unlikely(status & AG71XX_INT_ERR)) {
+ if (status & AG71XX_INT_TX_BE) {
+ ag71xx_wr(ag, AG71XX_REG_TX_STATUS, TX_STATUS_BE);
+ dev_err(&dev->dev, "TX BUS error\n");
+ }
+ if (status & AG71XX_INT_RX_BE) {
+ ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_BE);
+ dev_err(&dev->dev, "RX BUS error\n");
+ }
+ }
+
+#if 0
+ if (unlikely(status & AG71XX_INT_TX_UR)) {
+ ag71xx_wr(ag, AG71XX_REG_TX_STATUS, TX_STATUS_UR);
+ DBG("%s: TX underrun\n", dev->name);
+ }
+#endif
+
+#ifndef AG71XX_NAPI_TX
+ if (likely(status & AG71XX_INT_TX_PS))
+ ag71xx_tx_packets(ag);
+#endif
+
+ if (likely(status & AG71XX_INT_POLL)) {
+ ag71xx_int_disable(ag, AG71XX_INT_POLL);
+ DBG("%s: enable polling mode\n", dev->name);
+ netif_rx_schedule(dev, &ag->napi);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static void ag71xx_set_multicast_list(struct net_device *dev)
+{
+ /* TODO */
+}
+
+static int __init ag71xx_probe(struct platform_device *pdev)
+{
+ static u8 default_mac[ETH_ALEN] = {0x00, 0xba, 0xdb, 0xad, 0xba, 0xd0};
+ struct net_device *dev;
+ struct resource *res;
+ struct ag71xx *ag;
+ int err;
+
+ if (!pdev->dev.platform_data) {
+ dev_err(&pdev->dev, "no platform data specified\n");
+ err = -ENXIO;
+ goto err_out;
+ }
+
+ dev = alloc_etherdev(sizeof(*ag));
+ if (!dev) {
+ dev_err(&pdev->dev, "alloc_etherdev failed\n");
+ err = -ENOMEM;
+ goto err_out;
+ }
+
+ SET_NETDEV_DEV(dev, &pdev->dev);
+
+ ag = netdev_priv(dev);
+ ag->pdev = pdev;
+ ag->dev = dev;
+ spin_lock_init(&ag->lock);
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mac_base");
+ if (!res) {
+ dev_err(&pdev->dev, "no mac_base resource found\n");
+ err = -ENXIO;
+ goto err_out;
+ }
+
+ ag->mac_base = ioremap_nocache(res->start, res->end - res->start + 1);
+ if (!ag->mac_base) {
+ dev_err(&pdev->dev, "unable to ioremap mac_base\n");
+ err = -ENOMEM;
+ goto err_free_dev;
+ }
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mii_ctrl");
+ if (!res) {
+ dev_err(&pdev->dev, "no mii_ctrl resource found\n");
+ err = -ENXIO;
+ goto err_unmap_base;
+ }
+
+ ag->mii_ctrl = ioremap_nocache(res->start, res->end - res->start + 1);
+ if (!ag->mii_ctrl) {
+ dev_err(&pdev->dev, "unable to ioremap mii_ctrl\n");
+ err = -ENOMEM;
+ goto err_unmap_base;
+ }
+
+ dev->irq = platform_get_irq(pdev, 0);
+ err = request_irq(dev->irq, ag71xx_interrupt,
+ IRQF_DISABLED | IRQF_SAMPLE_RANDOM,
+ dev->name, dev);
+ if (err) {
+ dev_err(&pdev->dev, "unable to request IRQ %d\n", dev->irq);
+ goto err_unmap_mii_ctrl;
+ }
+
+ dev->base_addr = (unsigned long)ag->mac_base;
+ dev->open = ag71xx_open;
+ dev->stop = ag71xx_stop;
+ dev->hard_start_xmit = ag71xx_hard_start_xmit;
+ dev->set_multicast_list = ag71xx_set_multicast_list;
+ dev->do_ioctl = ag71xx_do_ioctl;
+ dev->ethtool_ops = &ag71xx_ethtool_ops;
+
+ netif_napi_add(dev, &ag->napi, ag71xx_poll, AG71XX_NAPI_WEIGHT);
+
+ memcpy(dev->dev_addr, default_mac, ETH_ALEN);
+ dev->dev_addr[5] += pdev->id & 0xff;
+
+ err = register_netdev(dev);
+ if (err) {
+ dev_err(&pdev->dev, "unable to register net device\n");
+ goto err_free_irq;
+ }
+
+ printk(KERN_INFO "%s: Atheros AG71xx at 0x%08lx, irq %d\n",
+ dev->name, dev->base_addr, dev->irq);
+
+ ag71xx_dump_regs(ag);
+
+ ag71xx_hw_init(ag);
+
+ ag71xx_dump_regs(ag);
+
+ err = ag71xx_mdio_init(ag, pdev->id);
+ if (err)
+ goto err_unregister_netdev;
+
+ platform_set_drvdata(pdev, dev);
+
+ return 0;
+
+err_unregister_netdev:
+ unregister_netdev(dev);
+err_free_irq:
+ free_irq(dev->irq, dev);
+err_unmap_mii_ctrl:
+ iounmap(ag->mii_ctrl);
+err_unmap_base:
+ iounmap(ag->mac_base);
+err_free_dev:
+ kfree(dev);
+err_out:
+ platform_set_drvdata(pdev, NULL);
+ return err;
+}
+
+static int __exit ag71xx_remove(struct platform_device *pdev)
+{
+ struct net_device *dev = platform_get_drvdata(pdev);
+
+ if (dev) {
+ struct ag71xx *ag = netdev_priv(dev);
+
+ if (ag->phy_dev)
+ phy_disconnect(ag->phy_dev);
+ ag71xx_mdio_cleanup(ag);
+ unregister_netdev(dev);
+ free_irq(dev->irq, dev);
+ iounmap(ag->mii_ctrl);
+ iounmap(ag->mac_base);
+ kfree(dev);
+ platform_set_drvdata(pdev, NULL);
+ }
+
+ return 0;
+}
+
+static struct platform_driver ag71xx_driver = {
+ .probe = ag71xx_probe,
+ .remove = __exit_p(ag71xx_remove),
+ .driver = {
+ .name = AG71XX_DRV_NAME,
+ }
+};
+
+static int __init ag71xx_module_init(void)
+{
+ return platform_driver_register(&ag71xx_driver);
+}
+
+static void __exit ag71xx_module_exit(void)
+{
+ platform_driver_unregister(&ag71xx_driver);
+}
+
+module_init(ag71xx_module_init);
+module_exit(ag71xx_module_exit);
+
+MODULE_VERSION(AG71XX_DRV_VERSION);
+MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
+MODULE_AUTHOR("Imre Kaloz <kaloz@openwrt.org>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:" AG71XX_DRV_NAME);
diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_mii.c b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_mii.c
new file mode 100644
index 000000000..65940d201
--- /dev/null
+++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_mii.c
@@ -0,0 +1,436 @@
+/*
+ * Atheros AR71xx built-in ethernet mac driver
+ *
+ * Copyright (C) 2008 Gabor Juhos <juhosg@openwrt.org>
+ * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
+ *
+ * Based on Atheros' AG7100 driver
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#include "ag71xx.h"
+
+#define AG71XX_MII_RETRY 1000
+#define AG71XX_MII_DELAY 5
+
+static inline void ag71xx_mii_ctrl_wr(struct ag71xx *ag, u32 value)
+{
+ __raw_writel(value, ag->mii_ctrl);
+}
+
+static inline u32 ag71xx_mii_ctrl_rr(struct ag71xx *ag)
+{
+ return __raw_readl(ag->mii_ctrl);
+}
+
+void ag71xx_mii_ctrl_set_if(struct ag71xx *ag, unsigned int mii_if)
+{
+ u32 t;
+
+ t = ag71xx_mii_ctrl_rr(ag);
+ t &= ~(0x3);
+ t |= (mii_if & 0x3);
+ ag71xx_mii_ctrl_wr(ag, t);
+}
+
+void ag71xx_mii_ctrl_set_speed(struct ag71xx *ag, unsigned int speed)
+{
+ u32 t;
+
+ t = ag71xx_mii_ctrl_rr(ag);
+ t &= ~(0x3 << 4);
+ t |= (speed & 0x3) << 4;
+ ag71xx_mii_ctrl_wr(ag, t);
+}
+
+static int ag71xx_mii_read(struct ag71xx *ag, int addr, int reg)
+{
+ int ret;
+ int i;
+
+ ag71xx_wr(ag, AG71XX_REG_MII_CMD, MII_CMD_WRITE);
+ ag71xx_wr(ag, AG71XX_REG_MII_ADDR,
+ ((addr & 0xff) << MII_ADDR_S) | (reg & 0xff));
+ ag71xx_wr(ag, AG71XX_REG_MII_CMD, MII_CMD_READ);
+
+ i = AG71XX_MII_RETRY;
+ while (ag71xx_rr(ag, AG71XX_REG_MII_IND) & MII_IND_BUSY) {
+ if (i-- == 0) {
+ printk(KERN_ERR "%s: mii_read timed out\n",
+ ag->dev->name);
+ ret = 0xffff;
+ goto out;
+ }
+ udelay(AG71XX_MII_DELAY);
+ }
+
+ ret = ag71xx_rr(ag, AG71XX_REG_MII_STATUS) & 0xffff;
+ ag71xx_wr(ag, AG71XX_REG_MII_CMD, MII_CMD_WRITE);
+
+ DBG("mii_read: addr=%04x, reg=%04x, value=%04x\n", addr, reg, ret);
+
+out:
+ return ret;
+}
+
+static void ag71xx_mii_write(struct ag71xx *ag, int addr, int reg, u16 val)
+{
+ int i;
+
+ DBG("mii_write: addr=%04x, reg=%04x, value=%04x\n", addr, reg, val);
+
+ ag71xx_wr(ag, AG71XX_REG_MII_ADDR,
+ ((addr & 0xff) << MII_ADDR_S) | (reg & 0xff));
+ ag71xx_wr(ag, AG71XX_REG_MII_CTRL, val);
+
+ i = AG71XX_MII_RETRY;
+ while (ag71xx_rr(ag, AG71XX_REG_MII_IND) & MII_IND_BUSY) {
+ if (i-- == 0) {
+ printk(KERN_ERR "%s: mii_write timed out\n",
+ ag->dev->name);
+ break;
+ }
+ udelay(AG71XX_MII_DELAY);
+ }
+}
+
+int ag71xx_mii_peek(struct ag71xx *ag)
+{
+ int cnt;
+ int i;
+
+ cnt = 0;
+ for (i = 0; i < PHY_MAX_ADDR; i++) {
+ u16 bmsr, id1, id2, bmcr, advert, lpa;
+
+ bmsr = ag71xx_mii_read(ag, i, MII_BMSR);
+ bmcr = ag71xx_mii_read(ag, i, MII_BMCR);
+ id1 = ag71xx_mii_read(ag, i, MII_PHYSID1);
+ id2 = ag71xx_mii_read(ag, i, MII_PHYSID2);
+ advert = ag71xx_mii_read(ag, i, MII_ADVERTISE);
+ lpa = ag71xx_mii_read(ag, i, MII_LPA);
+ DBG("%s: phy%02d bmsr=%04x, bmcr=%04x, "
+ "id=%04x.%04x, advertise=%04x, lpa=%04x\n",
+ ag->dev->name, i,
+ bmsr, bmcr, id1, id2, advert, lpa);
+
+ if ((bmsr | bmcr | id1 | id2 | advert | lpa) != 0)
+ cnt++;
+ }
+
+ return cnt;
+}
+
+#define PLL_SEC_CONFIG 0x18050004
+#define PLL_ETH0_INT_CLOCK 0x18050010
+#define PLL_ETH1_INT_CLOCK 0x18050014
+#define PLL_ETH_EXT_CLOCK 0x18050018
+
+#define ag7100_pll_shift(_ag) (((_ag)->pdev->id) ? 19 : 17)
+#define ag7100_pll_offset(_ag) (((_ag)->pdev->id) ? PLL_ETH1_INT_CLOCK \
+ : PLL_ETH0_INT_CLOCK)
+
+static void ag71xx_set_pll(struct ag71xx *ag, u32 pll_val)
+{
+ void __iomem *pll_reg = ioremap_nocache(ag7100_pll_offset(ag), 4);
+ void __iomem *pll_cfg = ioremap_nocache(PLL_SEC_CONFIG, 4);
+ u32 s;
+ u32 t;
+
+ s = ag7100_pll_shift(ag);
+
+ t = __raw_readl(pll_cfg);
+ t &= ~(3 << s);
+ t |= (2 << s);
+ __raw_writel(t, pll_cfg);
+ udelay(100);
+
+ __raw_writel(pll_val, pll_reg);
+
+ t |= (3 << s);
+ __raw_writel(t, pll_cfg);
+ udelay(100);
+
+ t &= ~(3 << s);
+ __raw_writel(t, pll_cfg);
+ udelay(100);
+ DBG("%s: pll_reg %#x: %#x\n", ag->dev->name,
+ (unsigned int)pll_reg, __raw_readl(pll_reg));
+
+ iounmap(pll_cfg);
+ iounmap(pll_reg);
+}
+
+static unsigned char *ag71xx_speed_str(struct ag71xx *ag)
+{
+ switch (ag->speed) {
+ case SPEED_1000:
+ return "1000";
+ case SPEED_100:
+ return "100";
+ case SPEED_10:
+ return "10";
+ }
+
+ return "?";
+}
+
+#if 1
+#define PLL_VAL_1000 0x00110000
+#define PLL_VAL_100 0x00001099
+#define PLL_VAL_10 0x00991099
+#else
+#define PLL_VAL_1000 0x01111000
+#define PLL_VAL_100 0x09991000
+#define PLL_VAL_10 0x09991999
+#endif
+
+void ag71xx_link_update(struct ag71xx *ag)
+{
+ u32 cfg2;
+ u32 ifctl;
+ u32 pll;
+ u32 fifo5;
+ u32 mii_speed;
+
+ if (!ag->link) {
+ netif_carrier_off(ag->dev);
+ printk(KERN_INFO "%s: link down\n", ag->dev->name);
+ return;
+ }
+
+ cfg2 = ag71xx_rr(ag, AG71XX_REG_MAC_CFG2);
+ cfg2 &= ~(MAC_CFG2_IF_1000 | MAC_CFG2_IF_10_100 | MAC_CFG2_FDX);
+ cfg2 |= (ag->duplex) ? MAC_CFG2_FDX : 0;
+
+ ifctl = ag71xx_rr(ag, AG71XX_REG_MAC_IFCTL);
+ ifctl &= ~(MAC_IFCTL_SPEED);
+
+ fifo5 = ag71xx_rr(ag, AG71XX_REG_FIFO_CFG5);
+ fifo5 &= ~FIFO_CFG5_BYTE_PER_CLK;
+
+ switch (ag->speed) {
+ case SPEED_1000:
+ mii_speed = MII_CTRL_SPEED_1000;
+ cfg2 |= MAC_CFG2_IF_1000;
+ pll = PLL_VAL_1000;
+ fifo5 |= FIFO_CFG5_BYTE_PER_CLK;
+ break;
+ case SPEED_100:
+ mii_speed = MII_CTRL_SPEED_100;
+ cfg2 |= MAC_CFG2_IF_10_100;
+ ifctl |= MAC_IFCTL_SPEED;
+ pll = PLL_VAL_100;
+ break;
+ case SPEED_10:
+ mii_speed = MII_CTRL_SPEED_10;
+ cfg2 |= MAC_CFG2_IF_10_100;
+ pll = PLL_VAL_10;
+ break;
+ default:
+ BUG();
+ return;
+ }
+
+ ag71xx_wr(ag, AG71XX_REG_FIFO_CFG3, 0x008001ff);
+ ag71xx_set_pll(ag, pll);
+ ag71xx_mii_ctrl_set_speed(ag, mii_speed);
+
+ ag71xx_wr(ag, AG71XX_REG_MAC_CFG2, cfg2);
+ ag71xx_wr(ag, AG71XX_REG_FIFO_CFG5, fifo5);
+ ag71xx_wr(ag, AG71XX_REG_MAC_IFCTL, ifctl);
+
+ netif_carrier_on(ag->dev);
+ printk(KERN_INFO "%s: link up (%sMbps/%s duplex)\n",
+ ag->dev->name,
+ ag71xx_speed_str(ag),
+ (DUPLEX_FULL == ag->duplex) ? "Full" : "Half");
+
+ DBG("%s: fifo1=%#x, fifo2=%#x, fifo3=%#x, fifo4=%#x, fifo5=%#x\n",
+ ag->dev->name,
+ ag71xx_rr(ag, AG71XX_REG_FIFO_CFG1),
+ ag71xx_rr(ag, AG71XX_REG_FIFO_CFG2),
+ ag71xx_rr(ag, AG71XX_REG_FIFO_CFG3),
+ ag71xx_rr(ag, AG71XX_REG_FIFO_CFG4),
+ ag71xx_rr(ag, AG71XX_REG_FIFO_CFG5));
+
+ DBG("%s: mac_cfg2=%#x, ifctl=%#x, mii_ctrl=%#x\n",
+ ag->dev->name,
+ ag71xx_rr(ag, AG71XX_REG_MAC_CFG2),
+ ag71xx_rr(ag, AG71XX_REG_MAC_IFCTL),
+ ag71xx_mii_ctrl_rr(ag));
+}
+
+static void ag71xx_link_adjust(struct net_device *dev)
+{
+ struct ag71xx *ag = netdev_priv(dev);
+ struct phy_device *phydev = ag->phy_dev;
+ unsigned long flags;
+ int status_change = 0;
+
+ spin_lock_irqsave(&ag->lock, flags);
+
+ if (phydev->link) {
+ if (ag->duplex != phydev->duplex
+ || ag->speed != phydev->speed) {
+ status_change = 1;
+ }
+ }
+
+ if (phydev->link != ag->link) {
+ if (phydev->link)
+ netif_schedule(dev);
+
+ status_change = 1;
+ }
+
+ ag->link = phydev->link;
+ ag->duplex = phydev->duplex;
+ ag->speed = phydev->speed;
+
+ if (status_change)
+ ag71xx_link_update(ag);
+
+ spin_unlock_irqrestore(&ag->lock, flags);
+}
+
+static int ag71xx_mdio_read(struct mii_bus *bus, int addr, int reg)
+{
+ struct ag71xx *ag = bus->priv;
+
+ return ag71xx_mii_read(ag, addr, reg);
+}
+
+static int ag71xx_mdio_write(struct mii_bus *bus, int addr, int reg, u16 val)
+{
+ struct ag71xx *ag = bus->priv;
+
+ ag71xx_mii_write(ag, addr, reg, val);
+ return 0;
+}
+
+static int ag71xx_mdio_reset(struct mii_bus *bus)
+{
+ /* TODO */
+ return 0;
+}
+
+static int ag71xx_mdio_probe(struct ag71xx *ag)
+{
+ struct net_device *dev = ag->dev;
+ struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
+ struct phy_device *phydev = NULL;
+ int phy_count = 0;
+ int phy_addr;
+
+ for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) {
+ if (!(pdata->phy_mask & (1 << phy_addr)))
+ continue;
+
+ if (ag->mii_bus.phy_map[phy_addr] == NULL)
+ continue;
+
+ DBG("%s: PHY found at %s, uid=%08x\n",
+ dev->name,
+ ag->mii_bus.phy_map[phy_addr]->dev.bus_id,
+ ag->mii_bus.phy_map[phy_addr]->phy_id);
+
+ if (phydev == NULL)
+ phydev = ag->mii_bus.phy_map[phy_addr];
+
+ phy_count++;
+ }
+
+ switch (phy_count) {
+ case 0:
+ printk(KERN_ERR "%s: no PHY found\n", dev->name);
+ return -ENODEV;
+ case 1:
+ ag->phy_dev = phy_connect(dev, phydev->dev.bus_id,
+ &ag71xx_link_adjust, 0, pdata->phy_if_mode);
+
+ if (IS_ERR(ag->phy_dev)) {
+ printk(KERN_ERR "%s: could not connect to PHY at %s\n",
+ dev->name, phydev->dev.bus_id);
+ return PTR_ERR(ag->phy_dev);
+ }
+
+ /* mask with MAC supported features */
+ phydev->supported &= (SUPPORTED_10baseT_Half
+ | SUPPORTED_10baseT_Full
+ | SUPPORTED_100baseT_Half
+ | SUPPORTED_100baseT_Full
+ | SUPPORTED_Autoneg
+ | SUPPORTED_MII
+ | SUPPORTED_TP);
+
+ phydev->advertising = phydev->supported;
+
+ printk(KERN_DEBUG "%s: connected to PHY at %s "
+ "[uid=%08x, driver=%s]\n",
+ dev->name, phydev->dev.bus_id,
+ phydev->phy_id, phydev->drv->name);
+
+ ag->link = 0;
+ ag->speed = 0;
+ ag->duplex = -1;
+ break;
+ default:
+ ag->phy_dev = NULL;
+ printk(KERN_DEBUG "%s: connected to multiple PHYs (%d)\n",
+ dev->name, phy_count);
+ break;
+ }
+
+ return 0;
+}
+
+int ag71xx_mdio_init(struct ag71xx *ag, int id)
+{
+ int err;
+ int i;
+
+ ag->mii_bus.name = "ag71xx_mii";
+ ag->mii_bus.read = ag71xx_mdio_read;
+ ag->mii_bus.write = ag71xx_mdio_write;
+ ag->mii_bus.reset = ag71xx_mdio_reset;
+ ag->mii_bus.id = id;
+ ag->mii_bus.priv = ag;
+ ag->mii_bus.dev = &ag->dev->dev;
+
+ ag->mii_bus.irq = kmalloc(sizeof(*ag->mii_bus.irq) * PHY_MAX_ADDR,
+ GFP_KERNEL);
+ if (!ag->mii_bus.irq) {
+ err = -ENOMEM;
+ goto err_out;
+ }
+
+ for (i = 0; i < PHY_MAX_ADDR; i++)
+ ag->mii_bus.irq[i] = PHY_POLL;
+
+ err = mdiobus_register(&ag->mii_bus);
+ if (err)
+ goto err_free_irqs;
+
+ err = ag71xx_mdio_probe(ag);
+ if (err)
+ goto err_unregister_bus;
+
+ return 0;
+
+err_unregister_bus:
+ mdiobus_unregister(&ag->mii_bus);
+err_free_irqs:
+ kfree(ag->mii_bus.irq);
+err_out:
+ return err;
+}
+
+void ag71xx_mdio_cleanup(struct ag71xx *ag)
+{
+ mdiobus_unregister(&ag->mii_bus);
+ kfree(ag->mii_bus.irq);
+}