mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-06 11:16:15 +09:00
76771e595a
This patch turns off MAC address mismatch warning when optional eeprom programmed with MAC address is not available. In that case, smc911x's MAC address register has its default value ff:ff:ff:ff:ff:ff and it's not a valid address. This makes eth_initialize() show the warning which has no meaningful information while environment variable ethaddr overrides the address read from the register. If there's no eeprom and the value of MAC address register is not valid after initialization, dev->enetaddr had better not be updated and maintain its initial value 00:00:00:00:00:00, which I think is what eth_initialize() expects. This is not a bug fix. Even without this patch, the driver works fine. It's just for enhancing the way of displaying messages. Signed-off-by: Seunghyeon Rhee <seunghyeon@lpmtec.com> Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
279 lines
6.5 KiB
C
279 lines
6.5 KiB
C
/*
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* SMSC LAN9[12]1[567] Network driver
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*
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* (c) 2007 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <command.h>
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#include <malloc.h>
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#include <net.h>
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#include <miiphy.h>
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#include "smc911x.h"
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u32 pkt_data_pull(struct eth_device *dev, u32 addr) \
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__attribute__ ((weak, alias ("smc911x_reg_read")));
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void pkt_data_push(struct eth_device *dev, u32 addr, u32 val) \
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__attribute__ ((weak, alias ("smc911x_reg_write")));
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#define mdelay(n) udelay((n)*1000)
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static void smc911x_handle_mac_address(struct eth_device *dev)
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{
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unsigned long addrh, addrl;
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uchar *m = dev->enetaddr;
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addrl = m[0] | (m[1] << 8) | (m[2] << 16) | (m[3] << 24);
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addrh = m[4] | (m[5] << 8);
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smc911x_set_mac_csr(dev, ADDRL, addrl);
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smc911x_set_mac_csr(dev, ADDRH, addrh);
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printf(DRIVERNAME ": MAC %pM\n", m);
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}
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static int smc911x_miiphy_read(struct eth_device *dev,
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u8 phy, u8 reg, u16 *val)
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{
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while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
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;
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smc911x_set_mac_csr(dev, MII_ACC, phy << 11 | reg << 6 |
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MII_ACC_MII_BUSY);
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while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
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;
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*val = smc911x_get_mac_csr(dev, MII_DATA);
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return 0;
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}
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static int smc911x_miiphy_write(struct eth_device *dev,
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u8 phy, u8 reg, u16 val)
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{
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while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
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;
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smc911x_set_mac_csr(dev, MII_DATA, val);
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smc911x_set_mac_csr(dev, MII_ACC,
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phy << 11 | reg << 6 | MII_ACC_MII_BUSY | MII_ACC_MII_WRITE);
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while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
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;
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return 0;
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}
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static int smc911x_phy_reset(struct eth_device *dev)
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{
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u32 reg;
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reg = smc911x_reg_read(dev, PMT_CTRL);
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reg &= ~0xfffff030;
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reg |= PMT_CTRL_PHY_RST;
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smc911x_reg_write(dev, PMT_CTRL, reg);
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mdelay(100);
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return 0;
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}
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static void smc911x_phy_configure(struct eth_device *dev)
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{
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int timeout;
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u16 status;
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smc911x_phy_reset(dev);
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smc911x_miiphy_write(dev, 1, PHY_BMCR, PHY_BMCR_RESET);
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mdelay(1);
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smc911x_miiphy_write(dev, 1, PHY_ANAR, 0x01e1);
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smc911x_miiphy_write(dev, 1, PHY_BMCR, PHY_BMCR_AUTON |
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PHY_BMCR_RST_NEG);
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timeout = 5000;
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do {
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mdelay(1);
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if ((timeout--) == 0)
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goto err_out;
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if (smc911x_miiphy_read(dev, 1, PHY_BMSR, &status) != 0)
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goto err_out;
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} while (!(status & PHY_BMSR_LS));
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printf(DRIVERNAME ": phy initialized\n");
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return;
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err_out:
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printf(DRIVERNAME ": autonegotiation timed out\n");
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}
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static void smc911x_enable(struct eth_device *dev)
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{
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/* Enable TX */
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smc911x_reg_write(dev, HW_CFG, 8 << 16 | HW_CFG_SF);
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smc911x_reg_write(dev, GPT_CFG, GPT_CFG_TIMER_EN | 10000);
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smc911x_reg_write(dev, TX_CFG, TX_CFG_TX_ON);
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/* no padding to start of packets */
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smc911x_reg_write(dev, RX_CFG, 0);
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smc911x_set_mac_csr(dev, MAC_CR, MAC_CR_TXEN | MAC_CR_RXEN |
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MAC_CR_HBDIS);
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}
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static int smc911x_init(struct eth_device *dev, bd_t * bd)
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{
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struct chip_id *id = dev->priv;
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printf(DRIVERNAME ": detected %s controller\n", id->name);
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smc911x_reset(dev);
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/* Configure the PHY, initialize the link state */
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smc911x_phy_configure(dev);
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smc911x_handle_mac_address(dev);
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/* Turn on Tx + Rx */
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smc911x_enable(dev);
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return 0;
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}
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static int smc911x_send(struct eth_device *dev,
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volatile void *packet, int length)
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{
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u32 *data = (u32*)packet;
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u32 tmplen;
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u32 status;
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smc911x_reg_write(dev, TX_DATA_FIFO, TX_CMD_A_INT_FIRST_SEG |
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TX_CMD_A_INT_LAST_SEG | length);
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smc911x_reg_write(dev, TX_DATA_FIFO, length);
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tmplen = (length + 3) / 4;
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while (tmplen--)
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pkt_data_push(dev, TX_DATA_FIFO, *data++);
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/* wait for transmission */
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while (!((smc911x_reg_read(dev, TX_FIFO_INF) &
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TX_FIFO_INF_TSUSED) >> 16));
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/* get status. Ignore 'no carrier' error, it has no meaning for
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* full duplex operation
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*/
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status = smc911x_reg_read(dev, TX_STATUS_FIFO) &
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(TX_STS_LOC | TX_STS_LATE_COLL | TX_STS_MANY_COLL |
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TX_STS_MANY_DEFER | TX_STS_UNDERRUN);
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if (!status)
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return 0;
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printf(DRIVERNAME ": failed to send packet: %s%s%s%s%s\n",
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status & TX_STS_LOC ? "TX_STS_LOC " : "",
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status & TX_STS_LATE_COLL ? "TX_STS_LATE_COLL " : "",
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status & TX_STS_MANY_COLL ? "TX_STS_MANY_COLL " : "",
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status & TX_STS_MANY_DEFER ? "TX_STS_MANY_DEFER " : "",
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status & TX_STS_UNDERRUN ? "TX_STS_UNDERRUN" : "");
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return -1;
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}
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static void smc911x_halt(struct eth_device *dev)
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{
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smc911x_reset(dev);
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}
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static int smc911x_rx(struct eth_device *dev)
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{
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u32 *data = (u32 *)NetRxPackets[0];
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u32 pktlen, tmplen;
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u32 status;
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if ((smc911x_reg_read(dev, RX_FIFO_INF) & RX_FIFO_INF_RXSUSED) >> 16) {
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status = smc911x_reg_read(dev, RX_STATUS_FIFO);
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pktlen = (status & RX_STS_PKT_LEN) >> 16;
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smc911x_reg_write(dev, RX_CFG, 0);
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tmplen = (pktlen + 2+ 3) / 4;
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while (tmplen--)
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*data++ = pkt_data_pull(dev, RX_DATA_FIFO);
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if (status & RX_STS_ES)
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printf(DRIVERNAME
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": dropped bad packet. Status: 0x%08x\n",
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status);
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else
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NetReceive(NetRxPackets[0], pktlen);
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}
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return 0;
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}
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int smc911x_initialize(u8 dev_num, int base_addr)
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{
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unsigned long addrl, addrh;
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struct eth_device *dev;
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dev = malloc(sizeof(*dev));
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if (!dev) {
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free(dev);
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return -1;
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}
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memset(dev, 0, sizeof(*dev));
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dev->iobase = base_addr;
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/* Try to detect chip. Will fail if not present. */
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if (smc911x_detect_chip(dev)) {
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free(dev);
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return 0;
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}
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addrh = smc911x_get_mac_csr(dev, ADDRH);
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addrl = smc911x_get_mac_csr(dev, ADDRL);
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if (!(addrl == 0xffffffff && addrh == 0x0000ffff)) {
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/* address is obtained from optional eeprom */
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dev->enetaddr[0] = addrl;
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dev->enetaddr[1] = addrl >> 8;
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dev->enetaddr[2] = addrl >> 16;
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dev->enetaddr[3] = addrl >> 24;
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dev->enetaddr[4] = addrh;
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dev->enetaddr[5] = addrh >> 8;
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}
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dev->init = smc911x_init;
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dev->halt = smc911x_halt;
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dev->send = smc911x_send;
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dev->recv = smc911x_rx;
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sprintf(dev->name, "%s-%hu", DRIVERNAME, dev_num);
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eth_register(dev);
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return 1;
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}
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