--- /dev/null
+/*
+ * Atheros AR71xx built-in ethernet mac driver
+ *
+ * Copyright (C) 2010 Michael Kurz <michi.kurz@googlemail.com>
+ * Copyright (C) 2008-2010 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 <common.h>
+#include <malloc.h>
+#include <net.h>
+#include <miiphy.h>
+
+#include <asm/ar71xx.h>
+
+#include "ag71xx.h"
+
+#ifdef AG71XX_DEBUG
+#define DBG(fmt,args...) printf(fmt ,##args)
+#else
+#define DBG(fmt,args...)
+#endif
+
+
+static struct ag71xx agtable[] = {
+ {
+ .mac_base = KSEG1ADDR(AR71XX_GE0_BASE),
+ .mii_ctrl = KSEG1ADDR(AR71XX_MII_BASE + MII_REG_MII0_CTRL),
+ .mii_if = CONFIG_AG71XX_MII0_IIF,
+ } , {
+ .mac_base = KSEG1ADDR(AR71XX_GE1_BASE),
+ .mii_ctrl = KSEG1ADDR(AR71XX_MII_BASE + MII_REG_MII1_CTRL),
+ .mii_if = CONFIG_AG71XX_MII1_IIF,
+ }
+};
+
+static int ag71xx_ring_alloc(struct ag71xx_ring *ring, unsigned int size)
+{
+ int err;
+ int i;
+ int rsize;
+
+ ring->desc_size = sizeof(struct ag71xx_desc);
+ if (ring->desc_size % (CONFIG_SYS_CACHELINE_SIZE)) {
+ rsize = roundup(ring->desc_size, CONFIG_SYS_CACHELINE_SIZE);
+ DBG("ag71xx: ring %p, desc size %u rounded to %u\n",
+ ring, ring->desc_size,
+ rsize);
+ ring->desc_size = rsize;
+ }
+
+ ring->descs_cpu = (u8 *) malloc((size * ring->desc_size)
+ + CONFIG_SYS_CACHELINE_SIZE - 1);
+ if (!ring->descs_cpu) {
+ err = -1;
+ goto err;
+ }
+ ring->descs_cpu = (u8 *) UNCACHED_SDRAM((((u32) ring->descs_cpu +
+ CONFIG_SYS_CACHELINE_SIZE - 1) & ~(CONFIG_SYS_CACHELINE_SIZE - 1)));
+ ring->descs_dma = (u8 *) virt_to_phys(ring->descs_cpu);
+
+ ring->size = size;
+
+ ring->buf = malloc(size * sizeof(*ring->buf));
+ if (!ring->buf) {
+ err = -1;
+ goto err;
+ }
+ memset(ring->buf, 0, size * sizeof(*ring->buf));
+
+ for (i = 0; i < size; i++) {
+ ring->buf[i].desc =
+ (struct ag71xx_desc *)&ring->descs_cpu[i * ring->desc_size];
+ DBG("ag71xx: ring %p, desc %d at %p\n",
+ ring, i, ring->buf[i].desc);
+ }
+
+ flush_cache( (u32) ring->buf, size * sizeof(*ring->buf));
+
+ return 0;
+
+ err:
+ return err;
+}
+
+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->buf[i].desc->next = (u32) virt_to_phys((ring->descs_dma +
+ ring->desc_size * ((i + 1) % AG71XX_TX_RING_SIZE)));
+
+ ring->buf[i].desc->ctrl = DESC_EMPTY;
+ ring->buf[i].skb = NULL;
+ }
+
+ ring->curr = 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++) {
+ ring->buf[i].desc->data = (u32) virt_to_phys(NetRxPackets[i]);
+ flush_cache((u32) NetRxPackets[i], PKTSIZE_ALIGN);
+ ring->buf[i].desc->ctrl = DESC_EMPTY;
+ }
+
+ ring->curr = 0;
+}
+
+static int ag71xx_ring_rx_init(struct ag71xx *ag)
+{
+ struct ag71xx_ring *ring = &ag->rx_ring;
+ unsigned int i;
+
+ for (i = 0; i < AG71XX_RX_RING_SIZE; i++) {
+ ring->buf[i].desc->next = (u32) virt_to_phys((ring->descs_dma +
+ ring->desc_size * ((i + 1) % AG71XX_RX_RING_SIZE)));
+
+ DBG("ag71xx: RX desc at %p, next is %08x\n",
+ ring->buf[i].desc,
+ ring->buf[i].desc->next);
+ }
+
+ for (i = 0; i < AG71XX_RX_RING_SIZE; i++) {
+ ring->buf[i].desc->data = (u32) virt_to_phys(NetRxPackets[i]);
+ ring->buf[i].desc->ctrl = DESC_EMPTY;
+ }
+
+ ring->curr = 0;
+
+ return 0;
+}
+
+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 ar71xx_set_pll(u32 cfg_reg, u32 pll_reg, u32 pll_val, u32 shift)
+{
+ uint32_t base = KSEG1ADDR(AR71XX_PLL_BASE);
+ u32 t;
+
+ t = readl(base + cfg_reg);
+ t &= ~(3 << shift);
+ t |= (2 << shift);
+ writel(t, base + cfg_reg);
+ udelay(100);
+
+ writel(pll_val, base + pll_reg);
+
+ t |= (3 << shift);
+ writel(t, base + cfg_reg);
+ udelay(100);
+
+ t &= ~(3 << shift);
+ writel(t, base + cfg_reg);
+ udelay(100);
+
+ debug("ar71xx: pll_reg %#x: %#x\n", (unsigned int)(base + pll_reg),
+ readl(base + pll_reg));
+}
+
+static void ar91xx_set_pll_ge0(int speed)
+{
+ //u32 val = ar71xx_get_eth_pll(0, speed);
+ u32 pll_val;
+
+ switch (speed) {
+ case SPEED_10:
+ pll_val = 0x00441099;
+ break;
+ case SPEED_100:
+ pll_val = 0x13000a44;
+ break;
+ case SPEED_1000:
+ pll_val = 0x1a000000;
+ break;
+ default:
+ BUG();
+ }
+
+ ar71xx_set_pll(AR91XX_PLL_REG_ETH_CONFIG, AR91XX_PLL_REG_ETH0_INT_CLOCK,
+ pll_val, AR91XX_ETH0_PLL_SHIFT);
+}
+
+static void ar91xx_set_pll_ge1(int speed)
+{
+ //u32 val = ar71xx_get_eth_pll(1, speed);
+ u32 pll_val;
+
+ switch (speed) {
+ case SPEED_10:
+ pll_val = 0x00441099;
+ break;
+ case SPEED_100:
+ pll_val = 0x13000a44;
+ break;
+ case SPEED_1000:
+ pll_val = 0x1a000000;
+ break;
+ default:
+ BUG();
+ }
+
+ ar71xx_set_pll(AR91XX_PLL_REG_ETH_CONFIG, AR91XX_PLL_REG_ETH1_INT_CLOCK,
+ pll_val, AR91XX_ETH1_PLL_SHIFT);
+}
+
+static void ag71xx_hw_set_macaddr(struct ag71xx *ag, unsigned char *mac)
+{
+ u32 t;
+
+ t = (((u32) mac[5]) << 24) | (((u32) mac[4]) << 16)
+ | (((u32) mac[3]) << 8) | ((u32) mac[2]);
+
+ ag71xx_wr(ag, AG71XX_REG_MAC_ADDR1, t);
+
+ t = (((u32) mac[1]) << 24) | (((u32) mac[0]) << 16);
+ ag71xx_wr(ag, AG71XX_REG_MAC_ADDR2, t);
+}
+
+static void ag71xx_dma_reset(struct ag71xx *ag)
+{
+ u32 val;
+ int i;
+
+ DBG("%s: txdesc reg: 0x%08x rxdesc reg: 0x%08x\n",
+ ag->dev->name,
+ ag71xx_rr(ag, AG71XX_REG_TX_DESC),
+ ag71xx_rr(ag, AG71XX_REG_RX_DESC));
+
+ /* stop RX and TX */
+ ag71xx_wr(ag, AG71XX_REG_RX_CTRL, 0);
+ ag71xx_wr(ag, AG71XX_REG_TX_CTRL, 0);
+
+ /* clear descriptor addresses */
+ ag71xx_wr(ag, AG71XX_REG_TX_DESC, 0);
+ ag71xx_wr(ag, AG71XX_REG_RX_DESC, 0);
+
+ /* clear pending RX/TX interrupts */
+ for (i = 0; i < 256; i++) {
+ ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_PR);
+ ag71xx_wr(ag, AG71XX_REG_TX_STATUS, TX_STATUS_PS);
+ }
+
+ /* clear pending errors */
+ ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_BE | RX_STATUS_OF);
+ ag71xx_wr(ag, AG71XX_REG_TX_STATUS, TX_STATUS_BE | TX_STATUS_UR);
+
+ val = ag71xx_rr(ag, AG71XX_REG_RX_STATUS);
+ if (val)
+ printf("%s: unable to clear DMA Rx status: %08x\n",
+ ag->dev->name, val);
+
+ val = ag71xx_rr(ag, AG71XX_REG_TX_STATUS);
+
+ /* mask out reserved bits */
+ val &= ~0xff000000;
+
+ if (val)
+ printf("%s: unable to clear DMA Tx status: %08x\n",
+ ag->dev->name, val);
+}
+
+static void ag71xx_halt(struct eth_device *dev)
+{
+ struct ag71xx *ag = (struct ag71xx *) dev->priv;
+
+ /* stop RX engine */
+ ag71xx_wr(ag, AG71XX_REG_RX_CTRL, 0);
+
+ ag71xx_dma_reset(ag);
+}
+
+#define MAX_WAIT 1000
+
+static int ag71xx_send(struct eth_device *dev, volatile void *packet,
+ int length)
+{
+ struct ag71xx *ag = (struct ag71xx *) dev->priv;
+ struct ag71xx_ring *ring = &ag->tx_ring;
+ struct ag71xx_desc *desc;
+ int i;
+
+ i = ring->curr % AG71XX_TX_RING_SIZE;
+ desc = ring->buf[i].desc;
+
+ if (!ag71xx_desc_empty(desc)) {
+ printf("%s: tx buffer full\n", ag->dev->name);
+ return 1;
+ }
+
+ flush_cache((u32) packet, length);
+ desc->data = (u32) virt_to_phys(packet);
+ desc->ctrl = (length & DESC_PKTLEN_M);
+
+ DBG("%s: sending %#08x length %#08x\n",
+ ag->dev->name, desc->data, desc->ctrl);
+
+ ring->curr++;
+ if (ring->curr >= AG71XX_TX_RING_SIZE){
+ ring->curr = 0;
+ }
+
+ /* enable TX engine */
+ ag71xx_wr(ag, AG71XX_REG_TX_CTRL, TX_CTRL_TXE);
+
+ for (i = 0; i < MAX_WAIT; i++)
+ {
+ if (ag71xx_desc_empty(desc))
+ break;
+ udelay(10);
+ }
+ if (i == MAX_WAIT) {
+ printf("%s: tx timed out!\n", ag->dev->name);
+ return -1;
+ }
+
+ /* disable TX engine */
+ ag71xx_wr(ag, AG71XX_REG_TX_CTRL, 0);
+ desc->data = 0;
+ desc->ctrl = DESC_EMPTY;
+
+ return 0;
+}
+
+static int ag71xx_recv(struct eth_device *dev)
+{
+ struct ag71xx *ag = (struct ag71xx *) dev->priv;
+ struct ag71xx_ring *ring = &ag->rx_ring;
+
+ for (;;) {
+ unsigned int i = ring->curr % AG71XX_RX_RING_SIZE;
+ struct ag71xx_desc *desc = ring->buf[i].desc;
+ int pktlen;
+
+ if (ag71xx_desc_empty(desc))
+ break;
+
+ DBG("%s: rx packets, curr=%u\n", dev->name, ring->curr);
+
+ pktlen = ag71xx_desc_pktlen(desc);
+ pktlen -= ETH_FCS_LEN;
+
+
+ NetReceive(NetRxPackets[i] , pktlen);
+ flush_cache( (u32) NetRxPackets[i], PKTSIZE_ALIGN);
+
+ ring->buf[i].desc->ctrl = DESC_EMPTY;
+ ring->curr++;
+ if (ring->curr >= AG71XX_RX_RING_SIZE){
+ ring->curr = 0;
+ }
+
+ }
+
+ if ((ag71xx_rr(ag, AG71XX_REG_RX_CTRL) & RX_CTRL_RXE) == 0) {
+ /* start RX engine */
+ ag71xx_wr(ag, AG71XX_REG_RX_CTRL, RX_CTRL_RXE);
+ }
+
+ return 0;
+}
+
+#ifdef AG71XX_DEBUG
+static 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 "?";
+}
+#endif
+
+void ag71xx_link_adjust(struct ag71xx *ag)
+{
+ u32 cfg2;
+ u32 ifctl;
+ u32 fifo5;
+ u32 mii_speed;
+
+ if (!ag->link) {
+ DBG("%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_BM;
+
+ switch (ag->speed) {
+ case SPEED_1000:
+ mii_speed = MII_CTRL_SPEED_1000;
+ cfg2 |= MAC_CFG2_IF_1000;
+ fifo5 |= FIFO_CFG5_BM;
+ break;
+ case SPEED_100:
+ mii_speed = MII_CTRL_SPEED_100;
+ cfg2 |= MAC_CFG2_IF_10_100;
+ ifctl |= MAC_IFCTL_SPEED;
+ break;
+ case SPEED_10:
+ mii_speed = MII_CTRL_SPEED_10;
+ cfg2 |= MAC_CFG2_IF_10_100;
+ break;
+ default:
+ BUG();
+ return;
+ }
+
+ ag71xx_wr(ag, AG71XX_REG_FIFO_CFG3, 0x00780fff);
+
+ if (ag->macNum == 0)
+ ar91xx_set_pll_ge0(ag->speed);
+ else
+ ar91xx_set_pll_ge1(ag->speed);
+
+ 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);
+
+ DBG("%s: link up (%sMbps/%s duplex)\n",
+ ag->dev->name,
+ ag71xx_speed_str(ag),
+ (1 == ag->duplex) ? "Full" : "Half");
+
+ DBG("%s: fifo_cfg0=%#x, fifo_cfg1=%#x, fifo_cfg2=%#x\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=%#x, fifo_cfg4=%#x, fifo_cfg5=%#x\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));
+
+ DBG("%s: mac_cfg2=%#x, mac_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));
+}
+
+#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
+static int ag71xx_getMiiSpeed(struct ag71xx *ag)
+{
+ uint16_t phyreg, cap;
+
+ if (miiphy_read(ag->phyname, ag->phyid,
+ PHY_BMSR, &phyreg)) {
+ puts("PHY_BMSR read failed, assuming no link\n");
+ return -1;
+ }
+
+ if ((phyreg & PHY_BMSR_LS) == 0) {
+ return -1;
+ }
+
+ if (miiphy_read(ag->phyname, ag->phyid,
+ PHY_1000BTSR, &phyreg))
+ return -1;
+
+ if (phyreg & PHY_1000BTSR_1000FD) {
+ ag->speed = SPEED_1000;
+ ag->duplex = 1;
+ } else if (phyreg & PHY_1000BTSR_1000HD) {
+ ag->speed = SPEED_1000;
+ ag->duplex = 0;
+ } else {
+ if (miiphy_read(ag->phyname, ag->phyid,
+ PHY_ANAR, &cap))
+ return -1;
+
+ if (miiphy_read(ag->phyname, ag->phyid,
+ PHY_ANLPAR, &phyreg))
+ return -1;
+
+ cap &= phyreg;
+ if (cap & PHY_ANLPAR_TXFD) {
+ ag->speed = SPEED_100;
+ ag->duplex = 1;
+ } else if (cap & PHY_ANLPAR_TX) {
+ ag->speed = SPEED_100;
+ ag->duplex = 0;
+ } else if (cap & PHY_ANLPAR_10FD) {
+ ag->speed = SPEED_10;
+ ag->duplex = 1;
+ } else {
+ ag->speed = SPEED_10;
+ ag->duplex = 0;
+ }
+ }
+
+ ag->link = 1;
+
+ return 0;
+}
+#endif
+
+static int ag71xx_hw_start(struct eth_device *dev, bd_t * bd)
+{
+ struct ag71xx *ag = (struct ag71xx *) dev->priv;
+
+ ag71xx_dma_reset(ag);
+
+ ag71xx_ring_rx_clean(ag);
+ ag71xx_ring_tx_init(ag);
+
+ ag71xx_wr(ag, AG71XX_REG_TX_DESC,
+ (u32) virt_to_phys(ag->tx_ring.descs_dma));
+ ag71xx_wr(ag, AG71XX_REG_RX_DESC,
+ (u32) virt_to_phys(ag->rx_ring.descs_dma));
+
+ ag71xx_hw_set_macaddr(ag, ag->dev->enetaddr);
+
+ if (ag->phyfixed) {
+ ag->link = 1;
+ ag->duplex = 1;
+ ag->speed = SPEED_1000;
+ } else {
+
+#if (defined(CONFIG_MII) || defined(CONFIG_CMD_MII))
+ if (ag71xx_getMiiSpeed(ag))
+ return -1;
+#else
+ /* only fixed, without mii */
+ return -1;
+#endif
+
+ }
+ ag71xx_link_adjust(ag);
+
+ DBG("%s: txdesc reg: %#08x rxdesc reg: %#08x\n",
+ ag->dev->name,
+ ag71xx_rr(ag, AG71XX_REG_TX_DESC),
+ ag71xx_rr(ag, AG71XX_REG_RX_DESC));
+
+ /* start RX engine */
+ ag71xx_wr(ag, AG71XX_REG_RX_CTRL, RX_CTRL_RXE);
+
+ return 0;
+}
+
+#define FIFO_CFG0_INIT (FIFO_CFG0_ALL << FIFO_CFG0_ENABLE_SHIFT)
+
+#define FIFO_CFG4_INIT (FIFO_CFG4_DE | FIFO_CFG4_DV | FIFO_CFG4_FC | \
+ FIFO_CFG4_CE | FIFO_CFG4_CR | FIFO_CFG4_LM | \
+ FIFO_CFG4_LO | FIFO_CFG4_OK | FIFO_CFG4_MC | \
+ FIFO_CFG4_BC | FIFO_CFG4_DR | FIFO_CFG4_LE | \
+ FIFO_CFG4_CF | FIFO_CFG4_PF | FIFO_CFG4_UO | \
+ FIFO_CFG4_VT)
+
+#define FIFO_CFG5_INIT (FIFO_CFG5_DE | FIFO_CFG5_DV | FIFO_CFG5_FC | \
+ FIFO_CFG5_CE | FIFO_CFG5_LO | FIFO_CFG5_OK | \
+ FIFO_CFG5_MC | FIFO_CFG5_BC | FIFO_CFG5_DR | \
+ FIFO_CFG5_CF | FIFO_CFG5_PF | FIFO_CFG5_VT | \
+ FIFO_CFG5_LE | FIFO_CFG5_FT | FIFO_CFG5_16 | \
+ FIFO_CFG5_17 | FIFO_CFG5_SF)
+
+static int ag71xx_hw_init(struct ag71xx *ag)
+{
+ int ret = 0;
+ uint32_t reg;
+ uint32_t mask, mii_type;
+
+ if (ag->macNum == 0) {
+ mask = (RESET_MODULE_GE0_MAC | RESET_MODULE_GE0_PHY);
+ mii_type = 0x13;
+ } else {
+ mask = (RESET_MODULE_GE1_MAC | RESET_MODULE_GE1_PHY);
+ mii_type = 0x11;
+ }
+
+ // mac soft reset
+ ag71xx_sb(ag, AG71XX_REG_MAC_CFG1, MAC_CFG1_SR);
+ udelay(20);
+
+ // device stop
+ reg = ar71xx_reset_rr(AR91XX_RESET_REG_RESET_MODULE);
+ ar71xx_reset_wr(AR91XX_RESET_REG_RESET_MODULE, reg | mask);
+ udelay(100 * 1000);
+
+ // device start
+ reg = ar71xx_reset_rr(AR91XX_RESET_REG_RESET_MODULE);
+ ar71xx_reset_wr(AR91XX_RESET_REG_RESET_MODULE, reg & ~mask);
+ udelay(100 * 1000);
+
+ /* setup MAC configuration registers */
+ ag71xx_wr(ag, AG71XX_REG_MAC_CFG1, (MAC_CFG1_RXE | MAC_CFG1_TXE));
+
+ ag71xx_sb(ag, AG71XX_REG_MAC_CFG2,
+ MAC_CFG2_PAD_CRC_EN | MAC_CFG2_LEN_CHECK);
+
+ /* setup FIFO configuration register 0 */
+ ag71xx_wr(ag, AG71XX_REG_FIFO_CFG0, FIFO_CFG0_INIT);
+
+ /* setup MII interface type */
+ ag71xx_mii_ctrl_set_if(ag, ag->mii_if);
+
+ /* setup mdio clock divisor */
+ ag71xx_wr(ag, AG71XX_REG_MII_CFG, MII_CFG_CLK_DIV_20);
+
+ /* setup FIFO configuration registers */
+ ag71xx_sb(ag, AG71XX_REG_FIFO_CFG4, FIFO_CFG4_INIT);
+ ag71xx_wr(ag, AG71XX_REG_FIFO_CFG1, 0x0fff0000);
+ ag71xx_wr(ag, AG71XX_REG_FIFO_CFG2, 0x00001fff);
+ ag71xx_wr(ag, AG71XX_REG_FIFO_CFG5, FIFO_CFG5_INIT);
+
+ ag71xx_dma_reset(ag);
+
+ ret = ag71xx_rings_init(ag);
+ if (ret)
+ return -1;
+
+ ag71xx_wr(ag, AG71XX_REG_TX_DESC,
+ (u32) virt_to_phys(ag->tx_ring.descs_dma));
+ ag71xx_wr(ag, AG71XX_REG_RX_DESC,
+ (u32) virt_to_phys(ag->rx_ring.descs_dma));
+
+ ag71xx_hw_set_macaddr(ag, ag->dev->enetaddr);
+
+ return 0;
+}
+
+#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
+#define AG71XX_MDIO_RETRY 1000
+#define AG71XX_MDIO_DELAY 5
+
+static inline struct ag71xx *ag71xx_name2mac(char *devname)
+{
+ if (strcmp(devname, agtable[0].dev->name) == 0)
+ return &agtable[0];
+ else if (strcmp(devname, agtable[1].dev->name) == 0)
+ return &agtable[1];
+ else
+ return NULL;
+}
+
+static inline void ag71xx_mdio_wr(struct ag71xx *ag, unsigned reg,
+ u32 value)
+{
+ uint32_t r;
+
+ r = ag->mac_base + reg;
+ writel(value, r);
+
+ /* flush write */
+ (void) readl(r);
+}
+
+static inline u32 ag71xx_mdio_rr(struct ag71xx *ag, unsigned reg)
+{
+ return readl(ag->mac_base + reg);
+}
+
+static int ag71xx_mdio_read(char *devname, unsigned char addr,
+ unsigned char reg, unsigned short *val)
+{
+ struct ag71xx *ag = ag71xx_name2mac(devname);
+ uint16_t regData;
+ int i;
+
+ ag71xx_mdio_wr(ag, AG71XX_REG_MII_CMD, MII_CMD_WRITE);
+ ag71xx_mdio_wr(ag, AG71XX_REG_MII_ADDR,
+ ((addr & 0xff) << MII_ADDR_SHIFT) | (reg & 0xff));
+ ag71xx_mdio_wr(ag, AG71XX_REG_MII_CMD, MII_CMD_READ);
+
+ i = AG71XX_MDIO_RETRY;
+ while (ag71xx_mdio_rr(ag, AG71XX_REG_MII_IND) & MII_IND_BUSY) {
+ if (i-- == 0) {
+ printf("%s: mii_read timed out\n",
+ ag->dev->name);
+ return -1;
+ }
+ udelay(AG71XX_MDIO_DELAY);
+ }
+
+ regData = (uint16_t) ag71xx_mdio_rr(ag, AG71XX_REG_MII_STATUS) & 0xffff;
+ ag71xx_mdio_wr(ag, AG71XX_REG_MII_CMD, MII_CMD_WRITE);
+
+ DBG("mii_read: addr=%04x, reg=%04x, value=%04x\n", addr, reg, regData);
+
+ if (val)
+ *val = regData;
+
+ return 0;
+}
+
+static int ag71xx_mdio_write(char *devname, unsigned char addr,
+ unsigned char reg, unsigned short val)
+{
+ struct ag71xx *ag = ag71xx_name2mac(devname);
+ int i;
+
+ if (ag == NULL)
+ return 1;
+
+ DBG("mii_write: addr=%04x, reg=%04x, value=%04x\n", addr, reg, val);
+
+ ag71xx_mdio_wr(ag, AG71XX_REG_MII_ADDR,
+ ((addr & 0xff) << MII_ADDR_SHIFT) | (reg & 0xff));
+ ag71xx_mdio_wr(ag, AG71XX_REG_MII_CTRL, val);
+
+ i = AG71XX_MDIO_RETRY;
+ while (ag71xx_mdio_rr(ag, AG71XX_REG_MII_IND) & MII_IND_BUSY) {
+ if (i-- == 0) {
+ printf("%s: mii_write timed out\n",
+ ag->dev->name);
+ break;
+ }
+ udelay(AG71XX_MDIO_DELAY);
+ }
+
+ return 0;
+}
+#endif
+
+int ag71xx_register(bd_t * bis, char *phyname[], uint16_t phyid[], uint16_t phyfixed[])
+{
+ int i, num = 0;
+ u8 used_ports[MAX_AG71XX_DEVS] = CONFIG_AG71XX_PORTS;
+
+ for (i = 0; i < MAX_AG71XX_DEVS; i++) {
+ /*skip if port is configured not to use */
+ if (used_ports[i] == 0)
+ continue;
+
+ agtable[i].dev = malloc(sizeof(struct eth_device));
+ if (agtable[i].dev == NULL) {
+ puts("malloc failed\n");
+ return 0;
+ }
+ memset(agtable[i].dev, 0, sizeof(struct eth_device));
+ sprintf(agtable[i].dev->name, "eth%d", i);
+
+ agtable[i].dev->iobase = 0;
+ agtable[i].dev->init = ag71xx_hw_start;
+ agtable[i].dev->halt = ag71xx_halt;
+ agtable[i].dev->send = ag71xx_send;
+ agtable[i].dev->recv = ag71xx_recv;
+ agtable[i].dev->priv = (void *) (&agtable[i]);
+ agtable[i].macNum = i;
+ eth_register(agtable[i].dev);
+#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
+
+ if ((phyname == NULL) || (phyid == NULL) || (phyfixed == NULL))
+ return -1;
+
+ agtable[i].phyname = strdup(phyname[i]);
+ agtable[i].phyid = phyid[i];
+ agtable[i].phyfixed = phyfixed[i];
+
+ miiphy_register(agtable[i].dev->name, ag71xx_mdio_read,
+ ag71xx_mdio_write);
+#endif
+
+ if (ag71xx_hw_init(&agtable[i]))
+ continue;
+
+ num++;
+ }
+
+ return num;
+}
projects / openwrt / staging / wigyori.git / blobdiff