--- /dev/null
+/*
+ * ax88180: ASIX AX88180 Non-PCI Gigabit Ethernet u-boot driver
+ *
+ * This program is free software; you can distribute it and/or modify
+ * it under the terms of the GNU General Public License (Version 2) as
+ * published by the Free Software Foundation.
+ * This program is distributed in the hope 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307,
+ * USA.
+ */
+
+/*
+ * ========================================================================
+ * ASIX AX88180 Non-PCI 16/32-bit Gigabit Ethernet Linux Driver
+ *
+ * The AX88180 Ethernet controller is a high performance and highly
+ * integrated local CPU bus Ethernet controller with embedded 40K bytes
+ * SRAM and supports both 16-bit and 32-bit SRAM-Like interfaces for any
+ * embedded systems.
+ * The AX88180 is a single chip 10/100/1000Mbps Gigabit Ethernet
+ * controller that supports both MII and RGMII interfaces and is
+ * compliant to IEEE 802.3, IEEE 802.3u and IEEE 802.3z standards.
+ *
+ * Please visit ASIX's web site (http://www.asix.com.tw) for more
+ * details.
+ *
+ * Module Name : ax88180.c
+ * Date : 2008-07-07
+ * History
+ * 09/06/2006 : New release for AX88180 US2 chip.
+ * 07/07/2008 : Fix up the coding style and using inline functions
+ * instead of macros
+ * ========================================================================
+ */
+#include <common.h>
+#include <command.h>
+#include <net.h>
+#include <malloc.h>
+#include <linux/mii.h>
+#include "ax88180.h"
+
+/*
+ * ===========================================================================
+ * Local SubProgram Declaration
+ * ===========================================================================
+ */
+static void ax88180_rx_handler (struct eth_device *dev);
+static int ax88180_phy_initial (struct eth_device *dev);
+static void ax88180_media_config (struct eth_device *dev);
+static unsigned long get_CicadaPHY_media_mode (struct eth_device *dev);
+static unsigned long get_MarvellPHY_media_mode (struct eth_device *dev);
+static unsigned short ax88180_mdio_read (struct eth_device *dev,
+ unsigned long regaddr);
+static void ax88180_mdio_write (struct eth_device *dev,
+ unsigned long regaddr, unsigned short regdata);
+
+/*
+ * ===========================================================================
+ * Local SubProgram Bodies
+ * ===========================================================================
+ */
+static int ax88180_mdio_check_complete (struct eth_device *dev)
+{
+ int us_cnt = 10000;
+ unsigned short tmpval;
+
+ /* MDIO read/write should not take more than 10 ms */
+ while (--us_cnt) {
+ tmpval = INW (dev, MDIOCTRL);
+ if (((tmpval & READ_PHY) == 0) && ((tmpval & WRITE_PHY) == 0))
+ break;
+ }
+
+ return us_cnt;
+}
+
+static unsigned short
+ax88180_mdio_read (struct eth_device *dev, unsigned long regaddr)
+{
+ struct ax88180_private *priv = (struct ax88180_private *)dev->priv;
+ unsigned long tmpval = 0;
+
+ OUTW (dev, (READ_PHY | (regaddr << 8) | priv->PhyAddr), MDIOCTRL);
+
+ if (ax88180_mdio_check_complete (dev))
+ tmpval = INW (dev, MDIODP);
+ else
+ printf ("Failed to read PHY register!\n");
+
+ return (unsigned short)(tmpval & 0xFFFF);
+}
+
+static void
+ax88180_mdio_write (struct eth_device *dev, unsigned long regaddr,
+ unsigned short regdata)
+{
+ struct ax88180_private *priv = (struct ax88180_private *)dev->priv;
+
+ OUTW (dev, regdata, MDIODP);
+
+ OUTW (dev, (WRITE_PHY | (regaddr << 8) | priv->PhyAddr), MDIOCTRL);
+
+ if (!ax88180_mdio_check_complete (dev))
+ printf ("Failed to write PHY register!\n");
+}
+
+static int ax88180_phy_reset (struct eth_device *dev)
+{
+ unsigned short delay_cnt = 500;
+
+ ax88180_mdio_write (dev, MII_BMCR, (BMCR_RESET | BMCR_ANENABLE));
+
+ /* Wait for the reset to complete, or time out (500 ms) */
+ while (ax88180_mdio_read (dev, MII_BMCR) & BMCR_RESET) {
+ udelay (1000);
+ if (--delay_cnt == 0) {
+ printf ("Failed to reset PHY!\n");
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+static void ax88180_mac_reset (struct eth_device *dev)
+{
+ unsigned long tmpval;
+ unsigned char i;
+
+ struct {
+ unsigned short offset, value;
+ } program_seq[] = {
+ {
+ MISC, MISC_NORMAL}, {
+ RXINDICATOR, DEFAULT_RXINDICATOR}, {
+ TXCMD, DEFAULT_TXCMD}, {
+ TXBS, DEFAULT_TXBS}, {
+ TXDES0, DEFAULT_TXDES0}, {
+ TXDES1, DEFAULT_TXDES1}, {
+ TXDES2, DEFAULT_TXDES2}, {
+ TXDES3, DEFAULT_TXDES3}, {
+ TXCFG, DEFAULT_TXCFG}, {
+ MACCFG2, DEFAULT_MACCFG2}, {
+ MACCFG3, DEFAULT_MACCFG3}, {
+ TXLEN, DEFAULT_TXLEN}, {
+ RXBTHD0, DEFAULT_RXBTHD0}, {
+ RXBTHD1, DEFAULT_RXBTHD1}, {
+ RXFULTHD, DEFAULT_RXFULTHD}, {
+ DOGTHD0, DEFAULT_DOGTHD0}, {
+ DOGTHD1, DEFAULT_DOGTHD1},};
+
+ OUTW (dev, MISC_RESET_MAC, MISC);
+ tmpval = INW (dev, MISC);
+
+ for (i = 0; i < ARRAY_SIZE(program_seq); i++)
+ OUTW (dev, program_seq[i].value, program_seq[i].offset);
+}
+
+static int ax88180_poll_tx_complete (struct eth_device *dev)
+{
+ struct ax88180_private *priv = (struct ax88180_private *)dev->priv;
+ unsigned long tmpval, txbs_txdp;
+ int TimeOutCnt = 10000;
+
+ txbs_txdp = 1 << priv->NextTxDesc;
+
+ while (TimeOutCnt--) {
+
+ tmpval = INW (dev, TXBS);
+
+ if ((tmpval & txbs_txdp) == 0)
+ break;
+
+ udelay (100);
+ }
+
+ if (TimeOutCnt)
+ return 0;
+ else
+ return -TimeOutCnt;
+}
+
+static void ax88180_rx_handler (struct eth_device *dev)
+{
+ struct ax88180_private *priv = (struct ax88180_private *)dev->priv;
+ unsigned long data_size;
+ unsigned short rxcurt_ptr, rxbound_ptr, next_ptr;
+ int i;
+#if defined (CONFIG_DRIVER_AX88180_16BIT)
+ unsigned short *rxdata = (unsigned short *)NetRxPackets[0];
+#else
+ unsigned long *rxdata = (unsigned long *)NetRxPackets[0];
+#endif
+ unsigned short count;
+
+ rxcurt_ptr = INW (dev, RXCURT);
+ rxbound_ptr = INW (dev, RXBOUND);
+ next_ptr = (rxbound_ptr + 1) & RX_PAGE_NUM_MASK;
+
+ debug ("ax88180: RX original RXBOUND=0x%04x,"
+ " RXCURT=0x%04x\n", rxbound_ptr, rxcurt_ptr);
+
+ while (next_ptr != rxcurt_ptr) {
+
+ OUTW (dev, RX_START_READ, RXINDICATOR);
+
+ data_size = READ_RXBUF (dev) & 0xFFFF;
+
+ if ((data_size == 0) || (data_size > MAX_RX_SIZE)) {
+
+ OUTW (dev, RX_STOP_READ, RXINDICATOR);
+
+ ax88180_mac_reset (dev);
+ printf ("ax88180: Invalid Rx packet length!"
+ " (len=0x%04lx)\n", data_size);
+
+ debug ("ax88180: RX RXBOUND=0x%04x,"
+ "RXCURT=0x%04x\n", rxbound_ptr, rxcurt_ptr);
+ return;
+ }
+
+ rxbound_ptr += (((data_size + 0xF) & 0xFFF0) >> 4) + 1;
+ rxbound_ptr &= RX_PAGE_NUM_MASK;
+
+ /* Comput access times */
+ count = (data_size + priv->PadSize) >> priv->BusWidth;
+
+ for (i = 0; i < count; i++) {
+ *(rxdata + i) = READ_RXBUF (dev);
+ }
+
+ OUTW (dev, RX_STOP_READ, RXINDICATOR);
+
+ /* Pass the packet up to the protocol layers. */
+ NetReceive (NetRxPackets[0], data_size);
+
+ OUTW (dev, rxbound_ptr, RXBOUND);
+
+ rxcurt_ptr = INW (dev, RXCURT);
+ rxbound_ptr = INW (dev, RXBOUND);
+ next_ptr = (rxbound_ptr + 1) & RX_PAGE_NUM_MASK;
+
+ debug ("ax88180: RX updated RXBOUND=0x%04x,"
+ "RXCURT=0x%04x\n", rxbound_ptr, rxcurt_ptr);
+ }
+
+ return;
+}
+
+static int ax88180_phy_initial (struct eth_device *dev)
+{
+ struct ax88180_private *priv = (struct ax88180_private *)dev->priv;
+ unsigned long tmp_regval;
+ unsigned short phyaddr;
+
+ /* Search for first avaliable PHY chipset */
+#ifdef CONFIG_PHY_ADDR
+ phyaddr = CONFIG_PHY_ADDR;
+#else
+ for (phyaddr = 0; phyaddr < 32; ++phyaddr)
+#endif
+ {
+ priv->PhyAddr = phyaddr;
+ priv->PhyID0 = ax88180_mdio_read(dev, MII_PHYSID1);
+ priv->PhyID1 = ax88180_mdio_read(dev, MII_PHYSID2);
+
+ switch (priv->PhyID0) {
+ case MARVELL_ALASKA_PHYSID0:
+ debug("ax88180: Found Marvell Alaska PHY family."
+ " (PHY Addr=0x%x)\n", priv->PhyAddr);
+
+ switch (priv->PhyID1) {
+ case MARVELL_88E1118_PHYSID1:
+ ax88180_mdio_write(dev, M88E1118_PAGE_SEL, 2);
+ ax88180_mdio_write(dev, M88E1118_CR,
+ M88E1118_CR_DEFAULT);
+ ax88180_mdio_write(dev, M88E1118_PAGE_SEL, 3);
+ ax88180_mdio_write(dev, M88E1118_LEDCTL,
+ M88E1118_LEDCTL_DEFAULT);
+ ax88180_mdio_write(dev, M88E1118_LEDMIX,
+ M88E1118_LEDMIX_LED050 | M88E1118_LEDMIX_LED150 | 0x15);
+ ax88180_mdio_write(dev, M88E1118_PAGE_SEL, 0);
+ default: /* Default to 88E1111 Phy */
+ tmp_regval = ax88180_mdio_read(dev, M88E1111_EXT_SSR);
+ if ((tmp_regval & HWCFG_MODE_MASK) != RGMII_COPPER_MODE)
+ ax88180_mdio_write(dev, M88E1111_EXT_SCR,
+ DEFAULT_EXT_SCR);
+ }
+
+ if (ax88180_phy_reset(dev) < 0)
+ return 0;
+ ax88180_mdio_write(dev, M88_IER, LINK_CHANGE_INT);
+
+ return 1;
+
+ case CICADA_CIS8201_PHYSID0:
+ debug("ax88180: Found CICADA CIS8201 PHY"
+ " chipset. (PHY Addr=0x%x)\n", priv->PhyAddr);
+
+ ax88180_mdio_write(dev, CIS_IMR,
+ (CIS_INT_ENABLE | LINK_CHANGE_INT));
+
+ /* Set CIS_SMI_PRIORITY bit before force the media mode */
+ tmp_regval = ax88180_mdio_read(dev, CIS_AUX_CTRL_STATUS);
+ tmp_regval &= ~CIS_SMI_PRIORITY;
+ ax88180_mdio_write(dev, CIS_AUX_CTRL_STATUS, tmp_regval);
+
+ return 1;
+
+ case 0xffff:
+ /* No PHY at this addr */
+ break;
+
+ default:
+ printf("ax88180: Unknown PHY chipset %#x at addr %#x\n",
+ priv->PhyID0, priv->PhyAddr);
+ break;
+ }
+ }
+
+ printf("ax88180: Unknown PHY chipset!!\n");
+ return 0;
+}
+
+static void ax88180_media_config (struct eth_device *dev)
+{
+ struct ax88180_private *priv = (struct ax88180_private *)dev->priv;
+ unsigned long bmcr_val, bmsr_val;
+ unsigned long rxcfg_val, maccfg0_val, maccfg1_val;
+ unsigned long RealMediaMode;
+ int i;
+
+ /* Waiting 2 seconds for PHY link stable */
+ for (i = 0; i < 20000; i++) {
+ bmsr_val = ax88180_mdio_read (dev, MII_BMSR);
+ if (bmsr_val & BMSR_LSTATUS) {
+ break;
+ }
+ udelay (100);
+ }
+
+ bmsr_val = ax88180_mdio_read (dev, MII_BMSR);
+ debug ("ax88180: BMSR=0x%04x\n", (unsigned int)bmsr_val);
+
+ if (bmsr_val & BMSR_LSTATUS) {
+ bmcr_val = ax88180_mdio_read (dev, MII_BMCR);
+
+ if (bmcr_val & BMCR_ANENABLE) {
+
+ /*
+ * Waiting for Auto-negotiation completion, this may
+ * take up to 5 seconds.
+ */
+ debug ("ax88180: Auto-negotiation is "
+ "enabled. Waiting for NWay completion..\n");
+ for (i = 0; i < 50000; i++) {
+ bmsr_val = ax88180_mdio_read (dev, MII_BMSR);
+ if (bmsr_val & BMSR_ANEGCOMPLETE) {
+ break;
+ }
+ udelay (100);
+ }
+ } else
+ debug ("ax88180: Auto-negotiation is disabled.\n");
+
+ debug ("ax88180: BMCR=0x%04x, BMSR=0x%04x\n",
+ (unsigned int)bmcr_val, (unsigned int)bmsr_val);
+
+ /* Get real media mode here */
+ switch (priv->PhyID0) {
+ case MARVELL_ALASKA_PHYSID0:
+ RealMediaMode = get_MarvellPHY_media_mode(dev);
+ break;
+ case CICADA_CIS8201_PHYSID0:
+ RealMediaMode = get_CicadaPHY_media_mode(dev);
+ break;
+ default:
+ RealMediaMode = MEDIA_1000FULL;
+ break;
+ }
+
+ priv->LinkState = INS_LINK_UP;
+
+ switch (RealMediaMode) {
+ case MEDIA_1000FULL:
+ debug ("ax88180: 1000Mbps Full-duplex mode.\n");
+ rxcfg_val = RXFLOW_ENABLE | DEFAULT_RXCFG;
+ maccfg0_val = TXFLOW_ENABLE | DEFAULT_MACCFG0;
+ maccfg1_val = GIGA_MODE_EN | RXFLOW_EN |
+ FULLDUPLEX | DEFAULT_MACCFG1;
+ break;
+
+ case MEDIA_1000HALF:
+ debug ("ax88180: 1000Mbps Half-duplex mode.\n");
+ rxcfg_val = DEFAULT_RXCFG;
+ maccfg0_val = DEFAULT_MACCFG0;
+ maccfg1_val = GIGA_MODE_EN | DEFAULT_MACCFG1;
+ break;
+
+ case MEDIA_100FULL:
+ debug ("ax88180: 100Mbps Full-duplex mode.\n");
+ rxcfg_val = RXFLOW_ENABLE | DEFAULT_RXCFG;
+ maccfg0_val = SPEED100 | TXFLOW_ENABLE
+ | DEFAULT_MACCFG0;
+ maccfg1_val = RXFLOW_EN | FULLDUPLEX | DEFAULT_MACCFG1;
+ break;
+
+ case MEDIA_100HALF:
+ debug ("ax88180: 100Mbps Half-duplex mode.\n");
+ rxcfg_val = DEFAULT_RXCFG;
+ maccfg0_val = SPEED100 | DEFAULT_MACCFG0;
+ maccfg1_val = DEFAULT_MACCFG1;
+ break;
+
+ case MEDIA_10FULL:
+ debug ("ax88180: 10Mbps Full-duplex mode.\n");
+ rxcfg_val = RXFLOW_ENABLE | DEFAULT_RXCFG;
+ maccfg0_val = TXFLOW_ENABLE | DEFAULT_MACCFG0;
+ maccfg1_val = RXFLOW_EN | FULLDUPLEX | DEFAULT_MACCFG1;
+ break;
+
+ case MEDIA_10HALF:
+ debug ("ax88180: 10Mbps Half-duplex mode.\n");
+ rxcfg_val = DEFAULT_RXCFG;
+ maccfg0_val = DEFAULT_MACCFG0;
+ maccfg1_val = DEFAULT_MACCFG1;
+ break;
+ default:
+ debug ("ax88180: Unknow media mode.\n");
+ rxcfg_val = DEFAULT_RXCFG;
+ maccfg0_val = DEFAULT_MACCFG0;
+ maccfg1_val = DEFAULT_MACCFG1;
+
+ priv->LinkState = INS_LINK_DOWN;
+ break;
+ }
+
+ } else {
+ rxcfg_val = DEFAULT_RXCFG;
+ maccfg0_val = DEFAULT_MACCFG0;
+ maccfg1_val = DEFAULT_MACCFG1;
+
+ priv->LinkState = INS_LINK_DOWN;
+ }
+
+ OUTW (dev, rxcfg_val, RXCFG);
+ OUTW (dev, maccfg0_val, MACCFG0);
+ OUTW (dev, maccfg1_val, MACCFG1);
+
+ return;
+}
+
+static unsigned long get_MarvellPHY_media_mode (struct eth_device *dev)
+{
+ unsigned long m88_ssr;
+ unsigned long MediaMode;
+
+ m88_ssr = ax88180_mdio_read (dev, M88_SSR);
+ switch (m88_ssr & SSR_MEDIA_MASK) {
+ case SSR_1000FULL:
+ MediaMode = MEDIA_1000FULL;
+ break;
+ case SSR_1000HALF:
+ MediaMode = MEDIA_1000HALF;
+ break;
+ case SSR_100FULL:
+ MediaMode = MEDIA_100FULL;
+ break;
+ case SSR_100HALF:
+ MediaMode = MEDIA_100HALF;
+ break;
+ case SSR_10FULL:
+ MediaMode = MEDIA_10FULL;
+ break;
+ case SSR_10HALF:
+ MediaMode = MEDIA_10HALF;
+ break;
+ default:
+ MediaMode = MEDIA_UNKNOWN;
+ break;
+ }
+
+ return MediaMode;
+}
+
+static unsigned long get_CicadaPHY_media_mode (struct eth_device *dev)
+{
+ unsigned long tmp_regval;
+ unsigned long MediaMode;
+
+ tmp_regval = ax88180_mdio_read (dev, CIS_AUX_CTRL_STATUS);
+ switch (tmp_regval & CIS_MEDIA_MASK) {
+ case CIS_1000FULL:
+ MediaMode = MEDIA_1000FULL;
+ break;
+ case CIS_1000HALF:
+ MediaMode = MEDIA_1000HALF;
+ break;
+ case CIS_100FULL:
+ MediaMode = MEDIA_100FULL;
+ break;
+ case CIS_100HALF:
+ MediaMode = MEDIA_100HALF;
+ break;
+ case CIS_10FULL:
+ MediaMode = MEDIA_10FULL;
+ break;
+ case CIS_10HALF:
+ MediaMode = MEDIA_10HALF;
+ break;
+ default:
+ MediaMode = MEDIA_UNKNOWN;
+ break;
+ }
+
+ return MediaMode;
+}
+
+static void ax88180_halt (struct eth_device *dev)
+{
+ /* Disable AX88180 TX/RX functions */
+ OUTW (dev, WAKEMOD, CMD);
+}
+
+static int ax88180_init (struct eth_device *dev, bd_t * bd)
+{
+ struct ax88180_private *priv = (struct ax88180_private *)dev->priv;
+ unsigned short tmp_regval;
+
+ ax88180_mac_reset (dev);
+
+ /* Disable interrupt */
+ OUTW (dev, CLEAR_IMR, IMR);
+
+ /* Disable AX88180 TX/RX functions */
+ OUTW (dev, WAKEMOD, CMD);
+
+ /* Fill the MAC address */
+ tmp_regval =
+ dev->enetaddr[0] | (((unsigned short)dev->enetaddr[1]) << 8);
+ OUTW (dev, tmp_regval, MACID0);
+
+ tmp_regval =
+ dev->enetaddr[2] | (((unsigned short)dev->enetaddr[3]) << 8);
+ OUTW (dev, tmp_regval, MACID1);
+
+ tmp_regval =
+ dev->enetaddr[4] | (((unsigned short)dev->enetaddr[5]) << 8);
+ OUTW (dev, tmp_regval, MACID2);
+
+ ax88180_media_config (dev);
+
+ OUTW (dev, DEFAULT_RXFILTER, RXFILTER);
+
+ /* Initial variables here */
+ priv->FirstTxDesc = TXDP0;
+ priv->NextTxDesc = TXDP0;
+
+ /* Check if there is any invalid interrupt status and clear it. */
+ OUTW (dev, INW (dev, ISR), ISR);
+
+ /* Start AX88180 TX/RX functions */
+ OUTW (dev, (RXEN | TXEN | WAKEMOD), CMD);
+
+ return 0;
+}
+
+/* Get a data block via Ethernet */
+static int ax88180_recv (struct eth_device *dev)
+{
+ unsigned short ISR_Status;
+ unsigned short tmp_regval;
+
+ /* Read and check interrupt status here. */
+ ISR_Status = INW (dev, ISR);
+
+ while (ISR_Status) {
+ /* Clear the interrupt status */
+ OUTW (dev, ISR_Status, ISR);
+
+ debug ("\nax88180: The interrupt status = 0x%04x\n",
+ ISR_Status);
+
+ if (ISR_Status & ISR_PHY) {
+ /* Read ISR register once to clear PHY interrupt bit */
+ tmp_regval = ax88180_mdio_read (dev, M88_ISR);
+ ax88180_media_config (dev);
+ }
+
+ if ((ISR_Status & ISR_RX) || (ISR_Status & ISR_RXBUFFOVR)) {
+ ax88180_rx_handler (dev);
+ }
+
+ /* Read and check interrupt status again */
+ ISR_Status = INW (dev, ISR);
+ }
+
+ return 0;
+}
+
+/* Send a data block via Ethernet. */
+static int ax88180_send(struct eth_device *dev, void *packet, int length)
+{
+ struct ax88180_private *priv = (struct ax88180_private *)dev->priv;
+ unsigned short TXDES_addr;
+ unsigned short txcmd_txdp, txbs_txdp;
+ unsigned short tmp_data;
+ int i;
+#if defined (CONFIG_DRIVER_AX88180_16BIT)
+ volatile unsigned short *txdata = (volatile unsigned short *)packet;
+#else
+ volatile unsigned long *txdata = (volatile unsigned long *)packet;
+#endif
+ unsigned short count;
+
+ if (priv->LinkState != INS_LINK_UP) {
+ return 0;
+ }
+
+ priv->FirstTxDesc = priv->NextTxDesc;
+ txbs_txdp = 1 << priv->FirstTxDesc;
+
+ debug ("ax88180: TXDP%d is available\n", priv->FirstTxDesc);
+
+ txcmd_txdp = priv->FirstTxDesc << 13;
+ TXDES_addr = TXDES0 + (priv->FirstTxDesc << 2);
+
+ OUTW (dev, (txcmd_txdp | length | TX_START_WRITE), TXCMD);
+
+ /* Comput access times */
+ count = (length + priv->PadSize) >> priv->BusWidth;
+
+ for (i = 0; i < count; i++) {
+ WRITE_TXBUF (dev, *(txdata + i));
+ }
+
+ OUTW (dev, txcmd_txdp | length, TXCMD);
+ OUTW (dev, txbs_txdp, TXBS);
+ OUTW (dev, (TXDPx_ENABLE | length), TXDES_addr);
+
+ priv->NextTxDesc = (priv->NextTxDesc + 1) & TXDP_MASK;
+
+ /*
+ * Check the available transmit descriptor, if we had exhausted all
+ * transmit descriptor ,then we have to wait for at least one free
+ * descriptor
+ */
+ txbs_txdp = 1 << priv->NextTxDesc;
+ tmp_data = INW (dev, TXBS);
+
+ if (tmp_data & txbs_txdp) {
+ if (ax88180_poll_tx_complete (dev) < 0) {
+ ax88180_mac_reset (dev);
+ priv->FirstTxDesc = TXDP0;
+ priv->NextTxDesc = TXDP0;
+ printf ("ax88180: Transmit time out occurred!\n");
+ }
+ }
+
+ return 0;
+}
+
+static void ax88180_read_mac_addr (struct eth_device *dev)
+{
+ unsigned short macid0_val, macid1_val, macid2_val;
+ unsigned short tmp_regval;
+ unsigned short i;
+
+ /* Reload MAC address from EEPROM */
+ OUTW (dev, RELOAD_EEPROM, PROMCTRL);
+
+ /* Waiting for reload eeprom completion */
+ for (i = 0; i < 500; i++) {
+ tmp_regval = INW (dev, PROMCTRL);
+ if ((tmp_regval & RELOAD_EEPROM) == 0)
+ break;
+ udelay (1000);
+ }
+
+ /* Get MAC addresses */
+ macid0_val = INW (dev, MACID0);
+ macid1_val = INW (dev, MACID1);
+ macid2_val = INW (dev, MACID2);
+
+ if (((macid0_val | macid1_val | macid2_val) != 0) &&
+ ((macid0_val & 0x01) == 0)) {
+ dev->enetaddr[0] = (unsigned char)macid0_val;
+ dev->enetaddr[1] = (unsigned char)(macid0_val >> 8);
+ dev->enetaddr[2] = (unsigned char)macid1_val;
+ dev->enetaddr[3] = (unsigned char)(macid1_val >> 8);
+ dev->enetaddr[4] = (unsigned char)macid2_val;
+ dev->enetaddr[5] = (unsigned char)(macid2_val >> 8);
+ }
+}
+
+/*
+===========================================================================
+<<<<<< Exported SubProgram Bodies >>>>>>
+===========================================================================
+*/
+int ax88180_initialize (bd_t * bis)
+{
+ struct eth_device *dev;
+ struct ax88180_private *priv;
+
+ dev = (struct eth_device *)malloc (sizeof *dev);
+
+ if (NULL == dev)
+ return 0;
+
+ memset (dev, 0, sizeof *dev);
+
+ priv = (struct ax88180_private *)malloc (sizeof (*priv));
+
+ if (NULL == priv)
+ return 0;
+
+ memset (priv, 0, sizeof *priv);
+
+ sprintf (dev->name, "ax88180");
+ dev->iobase = AX88180_BASE;
+ dev->priv = priv;
+ dev->init = ax88180_init;
+ dev->halt = ax88180_halt;
+ dev->send = ax88180_send;
+ dev->recv = ax88180_recv;
+
+ priv->BusWidth = BUS_WIDTH_32;
+ priv->PadSize = 3;
+#if defined (CONFIG_DRIVER_AX88180_16BIT)
+ OUTW (dev, (START_BASE >> 8), BASE);
+ OUTW (dev, DECODE_EN, DECODE);
+
+ priv->BusWidth = BUS_WIDTH_16;
+ priv->PadSize = 1;
+#endif
+
+ ax88180_mac_reset (dev);
+
+ /* Disable interrupt */
+ OUTW (dev, CLEAR_IMR, IMR);
+
+ /* Disable AX88180 TX/RX functions */
+ OUTW (dev, WAKEMOD, CMD);
+
+ ax88180_read_mac_addr (dev);
+
+ eth_register (dev);
+
+ return ax88180_phy_initial (dev);
+
+}
Code Review / kvmfornfv.git / blobdiff