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1fd92db83d
Update the naming convention used in the network stack functions and variables that Ethernet drivers use to interact with it. This cleans up the temporary hacks that were added to this interface along with the DM support. This patch has a few remaining checkpatch.pl failures that would be out of the scope of this patch to fix (drivers that are in gross violation of checkpatch.pl). Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Acked-by: Simon Glass <sjg@chromium.org>
284 lines
6.4 KiB
C
284 lines
6.4 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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* SPDX-License-Identifier: GPL-2.0+
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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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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_eth_phy_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_eth_phy_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_eth_phy_write(dev, 1, MII_BMCR, BMCR_RESET);
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mdelay(1);
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smc911x_eth_phy_write(dev, 1, MII_ADVERTISE, 0x01e1);
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smc911x_eth_phy_write(dev, 1, MII_BMCR, BMCR_ANENABLE |
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BMCR_ANRESTART);
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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_eth_phy_read(dev, 1, MII_BMSR, &status) != 0)
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goto err_out;
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} while (!(status & BMSR_LSTATUS));
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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, 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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smc911x_handle_mac_address(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 *)net_rx_packets[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 + 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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net_process_received_packet(net_rx_packets[0], pktlen);
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}
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return 0;
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}
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#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
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/* wrapper for smc911x_eth_phy_read */
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static int smc911x_miiphy_read(const char *devname, u8 phy, u8 reg, u16 *val)
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{
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struct eth_device *dev = eth_get_dev_by_name(devname);
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if (dev)
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return smc911x_eth_phy_read(dev, phy, reg, val);
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return -1;
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}
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/* wrapper for smc911x_eth_phy_write */
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static int smc911x_miiphy_write(const char *devname, u8 phy, u8 reg, u16 val)
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{
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struct eth_device *dev = eth_get_dev_by_name(devname);
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if (dev)
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return smc911x_eth_phy_write(dev, phy, reg, val);
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return -1;
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}
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#endif
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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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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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#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
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miiphy_register(dev->name, smc911x_miiphy_read, smc911x_miiphy_write);
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#endif
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return 1;
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}
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