--- /dev/null
+/*
+ * SMSC LAN9[12]1[567] Network driver
+ *
+ * (c) 2007 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <command.h>
+#include <malloc.h>
+#include <net.h>
+#include <miiphy.h>
+
+#include "smc911x.h"
+
+u32 pkt_data_pull(struct eth_device *dev, u32 addr) \
+ __attribute__ ((weak, alias ("smc911x_reg_read")));
+void pkt_data_push(struct eth_device *dev, u32 addr, u32 val) \
+ __attribute__ ((weak, alias ("smc911x_reg_write")));
+
+static void smc911x_handle_mac_address(struct eth_device *dev)
+{
+ unsigned long addrh, addrl;
+ uchar *m = dev->enetaddr;
+
+ addrl = m[0] | (m[1] << 8) | (m[2] << 16) | (m[3] << 24);
+ addrh = m[4] | (m[5] << 8);
+ smc911x_set_mac_csr(dev, ADDRL, addrl);
+ smc911x_set_mac_csr(dev, ADDRH, addrh);
+
+ printf(DRIVERNAME ": MAC %pM\n", m);
+}
+
+static int smc911x_eth_phy_read(struct eth_device *dev,
+ u8 phy, u8 reg, u16 *val)
+{
+ while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
+ ;
+
+ smc911x_set_mac_csr(dev, MII_ACC, phy << 11 | reg << 6 |
+ MII_ACC_MII_BUSY);
+
+ while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
+ ;
+
+ *val = smc911x_get_mac_csr(dev, MII_DATA);
+
+ return 0;
+}
+
+static int smc911x_eth_phy_write(struct eth_device *dev,
+ u8 phy, u8 reg, u16 val)
+{
+ while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
+ ;
+
+ smc911x_set_mac_csr(dev, MII_DATA, val);
+ smc911x_set_mac_csr(dev, MII_ACC,
+ phy << 11 | reg << 6 | MII_ACC_MII_BUSY | MII_ACC_MII_WRITE);
+
+ while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
+ ;
+ return 0;
+}
+
+static int smc911x_phy_reset(struct eth_device *dev)
+{
+ u32 reg;
+
+ reg = smc911x_reg_read(dev, PMT_CTRL);
+ reg &= ~0xfffff030;
+ reg |= PMT_CTRL_PHY_RST;
+ smc911x_reg_write(dev, PMT_CTRL, reg);
+
+ mdelay(100);
+
+ return 0;
+}
+
+static void smc911x_phy_configure(struct eth_device *dev)
+{
+ int timeout;
+ u16 status;
+
+ smc911x_phy_reset(dev);
+
+ smc911x_eth_phy_write(dev, 1, MII_BMCR, BMCR_RESET);
+ mdelay(1);
+ smc911x_eth_phy_write(dev, 1, MII_ADVERTISE, 0x01e1);
+ smc911x_eth_phy_write(dev, 1, MII_BMCR, BMCR_ANENABLE |
+ BMCR_ANRESTART);
+
+ timeout = 5000;
+ do {
+ mdelay(1);
+ if ((timeout--) == 0)
+ goto err_out;
+
+ if (smc911x_eth_phy_read(dev, 1, MII_BMSR, &status) != 0)
+ goto err_out;
+ } while (!(status & BMSR_LSTATUS));
+
+ printf(DRIVERNAME ": phy initialized\n");
+
+ return;
+
+err_out:
+ printf(DRIVERNAME ": autonegotiation timed out\n");
+}
+
+static void smc911x_enable(struct eth_device *dev)
+{
+ /* Enable TX */
+ smc911x_reg_write(dev, HW_CFG, 8 << 16 | HW_CFG_SF);
+
+ smc911x_reg_write(dev, GPT_CFG, GPT_CFG_TIMER_EN | 10000);
+
+ smc911x_reg_write(dev, TX_CFG, TX_CFG_TX_ON);
+
+ /* no padding to start of packets */
+ smc911x_reg_write(dev, RX_CFG, 0);
+
+ smc911x_set_mac_csr(dev, MAC_CR, MAC_CR_TXEN | MAC_CR_RXEN |
+ MAC_CR_HBDIS);
+
+}
+
+static int smc911x_init(struct eth_device *dev, bd_t * bd)
+{
+ struct chip_id *id = dev->priv;
+
+ printf(DRIVERNAME ": detected %s controller\n", id->name);
+
+ smc911x_reset(dev);
+
+ /* Configure the PHY, initialize the link state */
+ smc911x_phy_configure(dev);
+
+ smc911x_handle_mac_address(dev);
+
+ /* Turn on Tx + Rx */
+ smc911x_enable(dev);
+
+ return 0;
+}
+
+static int smc911x_send(struct eth_device *dev, void *packet, int length)
+{
+ u32 *data = (u32*)packet;
+ u32 tmplen;
+ u32 status;
+
+ smc911x_reg_write(dev, TX_DATA_FIFO, TX_CMD_A_INT_FIRST_SEG |
+ TX_CMD_A_INT_LAST_SEG | length);
+ smc911x_reg_write(dev, TX_DATA_FIFO, length);
+
+ tmplen = (length + 3) / 4;
+
+ while (tmplen--)
+ pkt_data_push(dev, TX_DATA_FIFO, *data++);
+
+ /* wait for transmission */
+ while (!((smc911x_reg_read(dev, TX_FIFO_INF) &
+ TX_FIFO_INF_TSUSED) >> 16));
+
+ /* get status. Ignore 'no carrier' error, it has no meaning for
+ * full duplex operation
+ */
+ status = smc911x_reg_read(dev, TX_STATUS_FIFO) &
+ (TX_STS_LOC | TX_STS_LATE_COLL | TX_STS_MANY_COLL |
+ TX_STS_MANY_DEFER | TX_STS_UNDERRUN);
+
+ if (!status)
+ return 0;
+
+ printf(DRIVERNAME ": failed to send packet: %s%s%s%s%s\n",
+ status & TX_STS_LOC ? "TX_STS_LOC " : "",
+ status & TX_STS_LATE_COLL ? "TX_STS_LATE_COLL " : "",
+ status & TX_STS_MANY_COLL ? "TX_STS_MANY_COLL " : "",
+ status & TX_STS_MANY_DEFER ? "TX_STS_MANY_DEFER " : "",
+ status & TX_STS_UNDERRUN ? "TX_STS_UNDERRUN" : "");
+
+ return -1;
+}
+
+static void smc911x_halt(struct eth_device *dev)
+{
+ smc911x_reset(dev);
+}
+
+static int smc911x_rx(struct eth_device *dev)
+{
+ u32 *data = (u32 *)NetRxPackets[0];
+ u32 pktlen, tmplen;
+ u32 status;
+
+ if ((smc911x_reg_read(dev, RX_FIFO_INF) & RX_FIFO_INF_RXSUSED) >> 16) {
+ status = smc911x_reg_read(dev, RX_STATUS_FIFO);
+ pktlen = (status & RX_STS_PKT_LEN) >> 16;
+
+ smc911x_reg_write(dev, RX_CFG, 0);
+
+ tmplen = (pktlen + 3) / 4;
+ while (tmplen--)
+ *data++ = pkt_data_pull(dev, RX_DATA_FIFO);
+
+ if (status & RX_STS_ES)
+ printf(DRIVERNAME
+ ": dropped bad packet. Status: 0x%08x\n",
+ status);
+ else
+ NetReceive(NetRxPackets[0], pktlen);
+ }
+
+ return 0;
+}
+
+#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
+/* wrapper for smc911x_eth_phy_read */
+static int smc911x_miiphy_read(const char *devname, u8 phy, u8 reg, u16 *val)
+{
+ struct eth_device *dev = eth_get_dev_by_name(devname);
+ if (dev)
+ return smc911x_eth_phy_read(dev, phy, reg, val);
+ return -1;
+}
+/* wrapper for smc911x_eth_phy_write */
+static int smc911x_miiphy_write(const char *devname, u8 phy, u8 reg, u16 val)
+{
+ struct eth_device *dev = eth_get_dev_by_name(devname);
+ if (dev)
+ return smc911x_eth_phy_write(dev, phy, reg, val);
+ return -1;
+}
+#endif
+
+int smc911x_initialize(u8 dev_num, int base_addr)
+{
+ unsigned long addrl, addrh;
+ struct eth_device *dev;
+
+ dev = malloc(sizeof(*dev));
+ if (!dev) {
+ return -1;
+ }
+ memset(dev, 0, sizeof(*dev));
+
+ dev->iobase = base_addr;
+
+ /* Try to detect chip. Will fail if not present. */
+ if (smc911x_detect_chip(dev)) {
+ free(dev);
+ return 0;
+ }
+
+ addrh = smc911x_get_mac_csr(dev, ADDRH);
+ addrl = smc911x_get_mac_csr(dev, ADDRL);
+ if (!(addrl == 0xffffffff && addrh == 0x0000ffff)) {
+ /* address is obtained from optional eeprom */
+ dev->enetaddr[0] = addrl;
+ dev->enetaddr[1] = addrl >> 8;
+ dev->enetaddr[2] = addrl >> 16;
+ dev->enetaddr[3] = addrl >> 24;
+ dev->enetaddr[4] = addrh;
+ dev->enetaddr[5] = addrh >> 8;
+ }
+
+ dev->init = smc911x_init;
+ dev->halt = smc911x_halt;
+ dev->send = smc911x_send;
+ dev->recv = smc911x_rx;
+ sprintf(dev->name, "%s-%hu", DRIVERNAME, dev_num);
+
+ eth_register(dev);
+
+#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
+ miiphy_register(dev->name, smc911x_miiphy_read, smc911x_miiphy_write);
+#endif
+
+ return 1;
+}
Code Review / kvmfornfv.git / blobdiff