summaryrefslogtreecommitdiff
path: root/drivers/net/netarm_eth.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/netarm_eth.c')
-rw-r--r--drivers/net/netarm_eth.c352
1 files changed, 0 insertions, 352 deletions
diff --git a/drivers/net/netarm_eth.c b/drivers/net/netarm_eth.c
deleted file mode 100644
index 325f16c..0000000
--- a/drivers/net/netarm_eth.c
+++ /dev/null
@@ -1,352 +0,0 @@
-/*
- * Copyright (C) 2004 IMMS gGmbH <www.imms.de>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that 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
- *
- * author(s): Thomas Elste, <info@elste.org>
- * (some parts derived from uCLinux Netarm Ethernet Driver)
- */
-
-
-#include <common.h>
-#include <command.h>
-#include <net.h>
-#include "netarm_eth.h"
-#include <asm/arch/netarm_registers.h>
-
-static int na_mii_poll_busy (void);
-
-static void na_get_mac_addr (void)
-{
- unsigned short p[3];
- char *m_addr;
- char ethaddr[20];
-
- m_addr = (char *) p;
-
- p[0] = (unsigned short) GET_EADDR (NETARM_ETH_SAL_STATION_ADDR_1);
- p[1] = (unsigned short) GET_EADDR (NETARM_ETH_SAL_STATION_ADDR_2);
- p[2] = (unsigned short) GET_EADDR (NETARM_ETH_SAL_STATION_ADDR_3);
-
- sprintf (ethaddr, "%02X:%02X:%02X:%02X:%02X:%02X",
- m_addr[0], m_addr[1],
- m_addr[2], m_addr[3], m_addr[4], m_addr[5]);
-
- printf ("HW-MAC Address: %s\n", ethaddr);
-
- /* set env, todo: check if already an adress is set */
- setenv ("ethaddr", ethaddr);
-}
-
-static void na_mii_write (int reg, int value)
-{
- int mii_addr;
-
- /* Select register */
- mii_addr = CONFIG_SYS_ETH_PHY_ADDR + reg;
- SET_EADDR (NETARM_ETH_MII_ADDR, mii_addr);
- /* Write value */
- SET_EADDR (NETARM_ETH_MII_WRITE, value);
- na_mii_poll_busy ();
-}
-
-static unsigned int na_mii_read (int reg)
-{
- int mii_addr, val;
-
- /* Select register */
- mii_addr = CONFIG_SYS_ETH_PHY_ADDR + reg;
- SET_EADDR (NETARM_ETH_MII_ADDR, mii_addr);
- /* do one management cycle */
- SET_EADDR (NETARM_ETH_MII_CMD,
- GET_EADDR (NETARM_ETH_MII_CMD) | NETARM_ETH_MIIC_RSTAT);
- na_mii_poll_busy ();
- /* Return read value */
- val = GET_EADDR (NETARM_ETH_MII_READ);
- return val;
-}
-
-static int na_mii_poll_busy (void)
-{
- ulong start;
- /* arm simple, non interrupt dependent timer */
- start = get_timer(0));
- while (get_timer(start) < NA_MII_POLL_BUSY_DELAY) {
- if (!(GET_EADDR (NETARM_ETH_MII_IND) & NETARM_ETH_MIII_BUSY)) {
- return 1;
- }
- }
- printf ("na_mii_busy timeout\n");
- return (0);
-}
-
-static int na_mii_identify_phy (void)
-{
- int id_reg_a = 0;
-
- /* get phy id register */
- id_reg_a = na_mii_read (MII_PHY_ID);
-
- if (id_reg_a == 0x0043) {
- /* This must be an Enable or a Lucent LU3X31 PHY chip */
- return 1;
- } else if (id_reg_a == 0x0013) {
- /* it is an Intel LXT971A */
- return 1;
- }
- return (0);
-}
-
-static int na_mii_negotiate (void)
-{
- int i = 0;
-
- /* Enable auto-negotiation */
- na_mii_write (MII_PHY_AUTONEGADV, 0x01e1);
- /* FIXME: 0x01E1 is 100Mb half and full duplex, 0x0061 is 10Mb only */
- /* Restart auto-negotiation */
- na_mii_write (MII_PHY_CONTROL, 0x1200);
-
- /* status register is 0xffff after setting the autoneg restart bit */
- while (na_mii_read (MII_PHY_STATUS) == 0xffff) {
- i++;
- }
-
- /* na_mii_read uses the timer already, so we can't use it again for
- timeout checking.
- Instead we just try some times.
- */
- for (i = 0; i < 40000; i++) {
- if ((na_mii_read (MII_PHY_STATUS) & 0x0024) == 0x0024) {
- return 0;
- }
- }
- /*
- printf("*Warning* autonegotiation timeout, status: 0x%x\n",na_mii_read(MII_PHY_STATUS));
- */
- return (1);
-}
-
-static unsigned int na_mii_check_speed (void)
-{
- unsigned int status;
-
- /* Read Status register */
- status = na_mii_read (MII_PHY_STATUS);
- /* Check link status. If 0, default to 100 Mbps. */
- if ((status & 0x0004) == 0) {
- printf ("*Warning* no link detected, set default speed to 100Mbs\n");
- return 1;
- } else {
- if ((na_mii_read (17) & 0x4000) != 0) {
- printf ("100Mbs link detected\n");
- return 1;
- } else {
- printf ("10Mbs link detected\n");
- return 0;
- }
- }
- return 0;
-}
-
-static int reset_eth (void)
-{
- int pt;
- ulong start;
-
- na_get_mac_addr ();
- pt = na_mii_identify_phy ();
-
- /* reset the phy */
- na_mii_write (MII_PHY_CONTROL, 0x8000);
- start = get_timer(0);
- while (get_timer(start) < NA_MII_NEGOTIATE_DELAY) {
- if ((na_mii_read (MII_PHY_STATUS) & 0x8000) == 0) {
- break;
- }
- }
- if (get_timer(start) >= NA_MII_NEGOTIATE_DELAY)
- printf ("phy reset timeout\n");
-
- /* set the PCS reg */
- SET_EADDR (NETARM_ETH_PCS_CFG, NETARM_ETH_PCSC_CLKS_25M |
- NETARM_ETH_PCSC_ENJAB | NETARM_ETH_PCSC_NOCFR);
-
- na_mii_negotiate ();
- na_mii_check_speed ();
-
- /* Delay 10 millisecond. (Maybe this should be 1 second.) */
- udelay (10000);
-
- /* Turn receive on.
- Enable statistics register autozero on read.
- Do not insert MAC address on transmit.
- Do not enable special test modes. */
- SET_EADDR (NETARM_ETH_STL_CFG,
- (NETARM_ETH_STLC_AUTOZ | NETARM_ETH_STLC_RXEN));
-
- /* Set the inter-packet gap delay to 0.96us for MII.
- The NET+ARM H/W Reference Guide indicates that the Back-to-back IPG
- Gap Timer Register should be set to 0x15 and the Non Back-to-back IPG
- Gap Timer Register should be set to 0x00000C12 for the MII PHY. */
- SET_EADDR (NETARM_ETH_B2B_IPG_GAP_TMR, 0x15);
- SET_EADDR (NETARM_ETH_NB2B_IPG_GAP_TMR, 0x00000C12);
-
- /* Add CRC to end of packets.
- Pad packets to minimum length of 64 bytes.
- Allow unlimited length transmit packets.
- Receive all broadcast packets.
- NOTE: Multicast addressing is NOT enabled here currently. */
- SET_EADDR (NETARM_ETH_MAC_CFG,
- (NETARM_ETH_MACC_CRCEN |
- NETARM_ETH_MACC_PADEN | NETARM_ETH_MACC_HUGEN));
- SET_EADDR (NETARM_ETH_SAL_FILTER, NETARM_ETH_SALF_BROAD);
-
- /* enable fifos */
- SET_EADDR (NETARM_ETH_GEN_CTRL,
- (NETARM_ETH_GCR_ERX | NETARM_ETH_GCR_ETX));
-
- return (0);
-}
-
-
-extern int eth_init (bd_t * bd)
-{
- reset_eth ();
- return 0;
-}
-
-extern void eth_halt (void)
-{
- SET_EADDR (NETARM_ETH_GEN_CTRL, 0);
-}
-
-/* Get a data block via Ethernet */
-extern int eth_rx (void)
-{
- int i;
- unsigned short rxlen;
- unsigned int *addr;
- unsigned int rxstatus, lastrxlen;
- char *pa;
-
- /* RXBR is 1, data block was received */
- if ((GET_EADDR (NETARM_ETH_GEN_STAT) & NETARM_ETH_GST_RXBR) == 0)
- return 0;
-
- /* get status register and the length of received block */
- rxstatus = GET_EADDR (NETARM_ETH_RX_STAT);
- rxlen = (rxstatus & NETARM_ETH_RXSTAT_SIZE) >> 16;
-
- if (rxlen == 0)
- return 0;
-
- /* clear RXBR to make fifo available */
- SET_EADDR (NETARM_ETH_GEN_STAT,
- GET_EADDR (NETARM_ETH_GEN_STAT) & ~NETARM_ETH_GST_RXBR);
-
- /* clear TXBC to make fifo available */
- /* According to NETARM50 data manual you just have to clear
- RXBR but that has no effect. Only after clearing TXBC the
- Fifo becomes readable. */
- SET_EADDR (NETARM_ETH_GEN_STAT,
- GET_EADDR (NETARM_ETH_GEN_STAT) & ~NETARM_ETH_GST_TXBC);
-
- addr = (unsigned int *) NetRxPackets[0];
- pa = (char *) NetRxPackets[0];
-
- /* read the fifo */
- for (i = 0; i < rxlen / 4; i++) {
- *addr = GET_EADDR (NETARM_ETH_FIFO_DAT1);
- addr++;
- }
-
- if (GET_EADDR (NETARM_ETH_GEN_STAT) & NETARM_ETH_GST_RXREGR) {
- /* RXFDB indicates wether the last word is 1,2,3 or 4 bytes long */
- lastrxlen =
- (GET_EADDR (NETARM_ETH_GEN_STAT) &
- NETARM_ETH_GST_RXFDB) >> 28;
- *addr = GET_EADDR (NETARM_ETH_FIFO_DAT1);
- switch (lastrxlen) {
- case 1:
- *addr &= 0xff000000;
- break;
- case 2:
- *addr &= 0xffff0000;
- break;
- case 3:
- *addr &= 0xffffff00;
- break;
- }
- }
-
- /* Pass the packet up to the protocol layers. */
- NetReceive (NetRxPackets[0], rxlen);
-
- return rxlen;
-}
-
-/* Send a data block via Ethernet. */
-extern int eth_send(void *packet, int length)
-{
- int i, length32;
- char *pa;
- unsigned int *pa32, lastp = 0, rest;
-
- pa = (char *) packet;
- pa32 = (unsigned int *) packet;
- length32 = length / 4;
- rest = length % 4;
-
- /* make sure there's no garbage in the last word */
- switch (rest) {
- case 0:
- lastp = pa32[length32];
- length32--;
- break;
- case 1:
- lastp = pa32[length32] & 0x000000ff;
- break;
- case 2:
- lastp = pa32[length32] & 0x0000ffff;
- break;
- case 3:
- lastp = pa32[length32] & 0x00ffffff;
- break;
- }
-
- /* write to the fifo */
- for (i = 0; i < length32; i++)
- SET_EADDR (NETARM_ETH_FIFO_DAT1, pa32[i]);
-
- /* the last word is written to an extra register, this
- starts the transmission */
- SET_EADDR (NETARM_ETH_FIFO_DAT2, lastp);
-
- /* NETARM_ETH_TXSTAT_TXOK should be checked, to know if the transmission
- went fine. But we can't use the timer for a timeout loop because
- of it is used already in upper layers. So we just try some times. */
- i = 0;
- while (i < 50000) {
- if ((GET_EADDR (NETARM_ETH_TX_STAT) & NETARM_ETH_TXSTAT_TXOK)
- == NETARM_ETH_TXSTAT_TXOK)
- return 0;
- i++;
- }
-
- printf ("eth_send timeout\n");
- return 1;
-}