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/*
* 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 "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);
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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) {
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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 < (sizeof (program_seq) / sizeof (program_seq[0])); 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;
/* 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);
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);
debug("ax88180: Found CICADA CIS8201 PHY"
" chipset. (PHY Addr=0x%x)\n", priv->PhyAddr);
(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);
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) {
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);
/*
* 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 */
case MARVELL_ALASKA_PHYSID0:
RealMediaMode = get_MarvellPHY_media_mode(dev);
break;
RealMediaMode = get_CicadaPHY_media_mode(dev);
break;
default:
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}
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)
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{
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)
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{
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);
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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);
}
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)
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{
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);
}