blob: e0fbd75aca587b9b1eb54aa88184ba5ee62d05c4 [file] [log] [blame]
/*
* Copyright (c) 2014 Qualcomm Atheros, Inc.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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
*/
#include <config.h>
#include <common.h>
#include <malloc.h>
#include <net.h>
#include <command.h>
#include <asm/io.h>
#include <asm/addrspace.h>
#include <asm/types.h>
#include "ar7240_soc.h"
#include "ag7240.h"
#include "ag7240_phy.h"
#if (CONFIG_COMMANDS & CFG_CMD_MII)
#include <miiphy.h>
#endif
#define ag7240_unit2mac(_unit) ag7240_macs[(_unit)]
#define ag7240_name2mac(name) strcmp(name,"eth0") ? ag7240_unit2mac(1) : ag7240_unit2mac(0)
uint16_t ag7240_miiphy_read(char *devname, uint32_t phaddr,
uint8_t reg);
void ag7240_miiphy_write(char *devname, uint32_t phaddr,
uint8_t reg, uint16_t data);
ag7240_mac_t *ag7240_macs[CFG_AG7240_NMACS];
extern void ar7240_sys_frequency(u32 *cpu_freq, u32 *ddr_freq, u32 *ahb_freq);
#ifdef CFG_ATHRS26_PHY
extern int athrs26_phy_setup(int unit);
extern int athrs26_phy_is_up(int unit);
extern int athrs26_phy_is_fdx(int unit);
extern int athrs26_phy_speed(int unit);
extern void athrs26_reg_init(void);
extern void athrs26_reg_init_lan(void);
extern int athrs26_mdc_check(void);
#endif
#ifdef CFG_ATHRS27_PHY
extern int athrs27_phy_setup(int unit);
extern int athrs27_phy_is_up(int unit);
extern int athrs27_phy_is_fdx(int unit);
extern int athrs27_phy_speed(int unit);
extern void athrs27_reg_init(void);
extern void athrs27_reg_init_lan(void);
extern int athrs27_mdc_check(void);
#endif
#ifdef CONFIG_F1E_PHY
extern int athr_phy_setup(int unit);
extern int athr_phy_is_up(int unit);
extern int athr_phy_is_fdx(int unit);
extern int athr_phy_speed(int unit);
extern void athr_reg_init(void);
#endif
static int
ag7240_send(struct eth_device *dev, volatile void *packet, int length)
{
int i;
ag7240_mac_t *mac = (ag7240_mac_t *)dev->priv;
ag7240_desc_t *f = mac->fifo_tx[mac->next_tx];
f->pkt_size = length;
f->res1 = 0;
f->pkt_start_addr = virt_to_phys(packet);
ag7240_tx_give_to_dma(f);
flush_cache((u32) packet, length);
ag7240_reg_wr(mac, AG7240_DMA_TX_DESC, virt_to_phys(f));
ag7240_reg_wr(mac, AG7240_DMA_TX_CTRL, AG7240_TXE);
for (i = 0; i < MAX_WAIT; i++) {
udelay(10);
if (!ag7240_tx_owned_by_dma(f))
break;
}
if (i == MAX_WAIT)
printf("Tx Timed out\n");
f->pkt_start_addr = 0;
f->pkt_size = 0;
if (++mac->next_tx >= NO_OF_TX_FIFOS)
mac->next_tx = 0;
return (0);
}
static int ag7240_recv(struct eth_device *dev)
{
int length;
ag7240_desc_t *f;
ag7240_mac_t *mac;
mac = (ag7240_mac_t *)dev->priv;
for (;;) {
f = mac->fifo_rx[mac->next_rx];
if (ag7240_rx_owned_by_dma(f))
break;
length = f->pkt_size;
NetReceive(NetRxPackets[mac->next_rx] , length - 4);
flush_cache((u32) NetRxPackets[mac->next_rx] , PKTSIZE_ALIGN);
ag7240_rx_give_to_dma(f);
if (++mac->next_rx >= NO_OF_RX_FIFOS)
mac->next_rx = 0;
}
if (!(ag7240_reg_rd(mac, AG7240_DMA_RX_CTRL))) {
ag7240_reg_wr(mac, AG7240_DMA_RX_DESC, virt_to_phys(f));
ag7240_reg_wr(mac, AG7240_DMA_RX_CTRL, 1);
}
return (0);
}
void ag7240_mii_setup(ag7240_mac_t *mac)
{
u32 mgmt_cfg_val;
u32 cpu_freq,ddr_freq,ahb_freq;
u32 check_cnt;
#ifdef CFG_ATHRS27_PHY
if (is_wasp()) {
printf("WASP ----> S27 PHY \n");
mgmt_cfg_val = 2;
ar7240_reg_wr(0xb8050024, 0x271); // 25MHz ref clock
//ar7240_reg_wr(0xb8050024, 0x570); // 40MHz ref clock
ag7240_reg_wr(ag7240_macs[1], AG7240_MAC_MII_MGMT_CFG, mgmt_cfg_val | (1 << 31));
ag7240_reg_wr(ag7240_macs[1], AG7240_MAC_MII_MGMT_CFG, mgmt_cfg_val);
return;
}
#endif
#ifdef CONFIG_AR7242_S16_PHY
if (is_wasp()) {
printf("WASP ----> S16 PHY *\n");
mgmt_cfg_val = 4;
if(mac->mac_unit == 0)
ar7240_reg_wr(AG7240_ETH_CFG, AG7240_ETH_CFG_RGMII_GE0);
ar7240_reg_rmw_clear(AG7240_ETH_SWITCH_CLK_SPARE, (1 << 6));
ag7240_reg_wr(mac, AG7240_MAC_MII_MGMT_CFG, mgmt_cfg_val | (1 << 31));
ag7240_reg_wr(mac, AG7240_MAC_MII_MGMT_CFG, mgmt_cfg_val);
return;
}
#endif
#ifdef CONFIG_F1E_PHY
if (is_wasp()) {
printf("WASP ----> F1 PHY *\n");
mgmt_cfg_val = 6;
if(mac->mac_unit == 0)
ar7240_reg_wr(AG7240_ETH_CFG, AG7240_ETH_CFG_RGMII_GE0);
ag7240_reg_wr(mac, AG7240_MAC_MII_MGMT_CFG, mgmt_cfg_val | (1 << 31));
ag7240_reg_wr(mac, AG7240_MAC_MII_MGMT_CFG, mgmt_cfg_val);
return;
}
#endif
if ((ar7240_reg_rd(AR7240_REV_ID) & AR7240_REV_ID_MASK) == AR7240_REV_1_2) {
mgmt_cfg_val = 0x2;
if (mac->mac_unit == 0) {
ag7240_reg_wr(mac, AG7240_MAC_MII_MGMT_CFG, mgmt_cfg_val | (1 << 31));
ag7240_reg_wr(mac, AG7240_MAC_MII_MGMT_CFG, mgmt_cfg_val);
}
}
else {
ar7240_sys_frequency(&cpu_freq, &ddr_freq, &ahb_freq);
switch (ahb_freq/1000000) {
case 150:
mgmt_cfg_val = 0x7;
break;
case 175:
mgmt_cfg_val = 0x5;
break;
case 200:
mgmt_cfg_val = 0x4;
break;
case 210:
mgmt_cfg_val = 0x9;
break;
case 220:
mgmt_cfg_val = 0x9;
break;
default:
mgmt_cfg_val = 0x7;
}
if ((is_ar7241() || is_ar7242())) {
/* External MII mode */
if (mac->mac_unit == 0 && is_ar7242()) {
mgmt_cfg_val = 0x6;
ar7240_reg_rmw_set(AG7240_ETH_CFG, AG7240_ETH_CFG_RGMII_GE0);
ag7240_reg_wr(mac, AG7240_MAC_MII_MGMT_CFG, mgmt_cfg_val | (1 << 31));
ag7240_reg_wr(mac, AG7240_MAC_MII_MGMT_CFG, mgmt_cfg_val);
}
/* Virian */
mgmt_cfg_val = 0x4;
ag7240_reg_wr(ag7240_macs[1], AG7240_MAC_MII_MGMT_CFG, mgmt_cfg_val | (1 << 31));
ag7240_reg_wr(ag7240_macs[1], AG7240_MAC_MII_MGMT_CFG, mgmt_cfg_val);
printf("Virian MDC CFG Value ==> %x\n",mgmt_cfg_val);
}
else if(is_ar933x()){
//GE0 receives Rx/Tx clock, and use S26 phy
ar7240_reg_rmw_set(AG7240_ETH_CFG, AG7240_ETH_CFG_MII_GE0_SLAVE);
mgmt_cfg_val = 0xF;
if (mac->mac_unit == 1) {
check_cnt = 0;
while (check_cnt++ < 10) {
ag7240_reg_wr(mac, AG7240_MAC_MII_MGMT_CFG, mgmt_cfg_val | (1 << 31));
ag7240_reg_wr(mac, AG7240_MAC_MII_MGMT_CFG, mgmt_cfg_val);
#ifdef CFG_ATHRS26_PHY
if(athrs26_mdc_check() == 0)
break;
#endif
}
if(check_cnt == 11)
printf("%s: MDC check failed\n", __func__);
}
}
else { /* Python 1.0 & 1.1 */
if (mac->mac_unit == 0) {
check_cnt = 0;
while (check_cnt++ < 10) {
ag7240_reg_wr(mac, AG7240_MAC_MII_MGMT_CFG, mgmt_cfg_val | (1 << 31));
ag7240_reg_wr(mac, AG7240_MAC_MII_MGMT_CFG, mgmt_cfg_val);
#ifdef CFG_ATHRS26_PHY
if(athrs26_mdc_check() == 0)
break;
#endif
}
if(check_cnt == 11)
printf("%s: MDC check failed\n", __func__);
}
}
}
}
static void ag7240_hw_start(ag7240_mac_t *mac)
{
if(mac->mac_unit)
{
ag7240_reg_wr(mac, AG7240_MAC_CFG1, (AG7240_MAC_CFG1_RX_EN |
AG7240_MAC_CFG1_TX_EN));
ag7240_reg_rmw_set(mac, AG7240_MAC_CFG2, (AG7240_MAC_CFG2_PAD_CRC_EN |
AG7240_MAC_CFG2_LEN_CHECK | AG7240_MAC_CFG2_IF_1000));
}
else {
ag7240_reg_wr(mac, AG7240_MAC_CFG1, (AG7240_MAC_CFG1_RX_EN |
AG7240_MAC_CFG1_TX_EN));
ag7240_reg_rmw_set(mac, AG7240_MAC_CFG2, (AG7240_MAC_CFG2_PAD_CRC_EN |
AG7240_MAC_CFG2_LEN_CHECK | AG7240_MAC_CFG2_IF_10_100));
}
ag7240_reg_wr(mac, AG7240_MAC_FIFO_CFG_0, 0x1f00);
ag7240_mii_setup(mac);
ag7240_reg_wr(mac, AG7240_MAC_FIFO_CFG_1, 0x10ffff);
ag7240_reg_wr(mac, AG7240_MAC_FIFO_CFG_2, 0xAAA0555);
ag7240_reg_rmw_set(mac, AG7240_MAC_FIFO_CFG_4, 0x3ffff);
/*
* Setting Drop CRC Errors, Pause Frames,Length Error frames
* and Multi/Broad cast frames.
*/
#ifdef AG7240_BROADCAST_ENABLE
ag7240_reg_wr(mac, AG7240_MAC_FIFO_CFG_5, 0xe6be2);
#else
ag7240_reg_wr(mac, AG7240_MAC_FIFO_CFG_5, 0x7eccf);
#endif
ag7240_reg_wr(mac, AG7240_MAC_FIFO_CFG_3, 0x1f00140);
printf(": cfg1 %#x cfg2 %#x\n", ag7240_reg_rd(mac, AG7240_MAC_CFG1),
ag7240_reg_rd(mac, AG7240_MAC_CFG2));
}
static int ag7240_check_link(ag7240_mac_t *mac)
{
u32 link, duplex, speed;
ag7240_phy_link(mac->mac_unit, (int *)&link);
ag7240_phy_duplex(mac->mac_unit, (int *)&duplex);
ag7240_phy_speed(mac->mac_unit, (int *)&speed);
mac->link = link;
#ifdef SUPPORT_PLC
if(strcmp(mac->dev->name, "eth0") == 0) {
printf("ag7240_check_link: %s link forced down\n",mac->dev->name);
return 0;
}
#endif
if(!mac->link) {
printf("%s link down\n",mac->dev->name);
return 0;
}
switch (speed)
{
case _1000BASET:
ag7240_set_mac_if(mac, 1);
ag7240_reg_rmw_set(mac, AG7240_MAC_FIFO_CFG_5, (1 << 19));
if (is_ar7242() && (mac->mac_unit == 0)) {
ar7240_reg_wr(AR7242_ETH_XMII_CONFIG,0x1c000000);
}
#ifdef CONFIG_F1E_PHY
if (is_wasp() && (mac->mac_unit == 0)) {
ar7240_reg_wr(AR7242_ETH_XMII_CONFIG,0x0e000000);
}
#else
if (is_wasp() && (mac->mac_unit == 0)) {
ar7240_reg_wr(AR7242_ETH_XMII_CONFIG,0x06000000);
}
#endif
break;
case _100BASET:
ag7240_set_mac_if(mac, 0);
ag7240_set_mac_speed(mac, 1);
ag7240_reg_rmw_clear(mac, AG7240_MAC_FIFO_CFG_5, (1 << 19));
if ((is_ar7242() || is_wasp()) && (mac->mac_unit == 0))
ar7240_reg_wr(AR7242_ETH_XMII_CONFIG,0x0101);
break;
case _10BASET:
ag7240_set_mac_if(mac, 0);
ag7240_set_mac_speed(mac, 0);
ag7240_reg_rmw_clear(mac, AG7240_MAC_FIFO_CFG_5, (1 << 19));
if ((is_ar7242() || is_wasp()) && (mac->mac_unit == 0))
ar7240_reg_wr(AR7242_ETH_XMII_CONFIG,0x1616);
break;
default:
printf("Invalid speed detected\n");
return 0;
}
if (mac->link && (duplex == mac->duplex) && (speed == mac->speed))
return 1;
mac->duplex = duplex;
mac->speed = speed;
printf("dup %d speed %d\n", duplex, speed);
ag7240_set_mac_duplex(mac,duplex);
return 1;
}
/*
* For every command we re-setup the ring and start with clean h/w rx state
*/
static int ag7240_clean_rx(struct eth_device *dev, bd_t * bd)
{
int i;
ag7240_desc_t *fr;
ag7240_mac_t *mac = (ag7240_mac_t*)dev->priv;
if (!ag7240_check_link(mac))
return 0;
mac->next_rx = 0;
for (i = 0; i < NO_OF_RX_FIFOS; i++) {
fr = mac->fifo_rx[i];
fr->pkt_start_addr = virt_to_phys(NetRxPackets[i]);
flush_cache((u32) NetRxPackets[i], PKTSIZE_ALIGN);
ag7240_rx_give_to_dma(fr);
}
ag7240_reg_wr(mac, AG7240_DMA_RX_DESC, virt_to_phys(mac->fifo_rx[0]));
ag7240_reg_wr(mac, AG7240_DMA_RX_CTRL, AG7240_RXE); /* rx start */
if(!is_ar933x())
udelay(1000 * 1000);
return 1;
}
static int ag7240_alloc_fifo(int ndesc, ag7240_desc_t ** fifo)
{
int i;
u32 size;
uchar *p = NULL;
size = sizeof(ag7240_desc_t) * ndesc;
size += CFG_CACHELINE_SIZE - 1;
if ((p = malloc(size)) == NULL) {
printf("Cant allocate fifos\n");
return -1;
}
p = (uchar *) (((u32) p + CFG_CACHELINE_SIZE - 1) &
~(CFG_CACHELINE_SIZE - 1));
p = UNCACHED_SDRAM(p);
for (i = 0; i < ndesc; i++)
fifo[i] = (ag7240_desc_t *) p + i;
return 0;
}
static int ag7240_setup_fifos(ag7240_mac_t *mac)
{
int i;
if (ag7240_alloc_fifo(NO_OF_TX_FIFOS, mac->fifo_tx))
return 1;
for (i = 0; i < NO_OF_TX_FIFOS; i++) {
mac->fifo_tx[i]->next_desc = (i == NO_OF_TX_FIFOS - 1) ?
virt_to_phys(mac->fifo_tx[0]) : virt_to_phys(mac->fifo_tx[i + 1]);
ag7240_tx_own(mac->fifo_tx[i]);
}
if (ag7240_alloc_fifo(NO_OF_RX_FIFOS, mac->fifo_rx))
return 1;
for (i = 0; i < NO_OF_RX_FIFOS; i++) {
mac->fifo_rx[i]->next_desc = (i == NO_OF_RX_FIFOS - 1) ?
virt_to_phys(mac->fifo_rx[0]) : virt_to_phys(mac->fifo_rx[i + 1]);
}
return (1);
}
static void ag7240_halt(struct eth_device *dev)
{
ag7240_mac_t *mac = (ag7240_mac_t *)dev->priv;
ag7240_reg_wr(mac, AG7240_DMA_RX_CTRL, 0);
while (ag7240_reg_rd(mac, AG7240_DMA_RX_CTRL));
}
unsigned char *
ag7240_mac_addr_loc(void)
{
#ifndef BOARDCAL
extern flash_info_t flash_info[];
#endif
#ifdef BOARDCAL
/*
** BOARDCAL environmental variable has the address of the cal sector
*/
return ((unsigned char *)BOARDCAL);
#else
/* MAC address is store in the 2nd 4k of last sector */
return ((unsigned char *)
(KSEG1ADDR(AR7240_SPI_BASE) + (4 * 1024) +
flash_info[0].size - (64 * 1024) /* sector_size */ ));
#endif
}
static void ag7240_get_ethaddr(struct eth_device *dev)
{
unsigned char *eeprom;
unsigned char *mac = dev->enetaddr;
#ifndef CONFIG_AR7240_EMU
eeprom = ag7240_mac_addr_loc();
if (strcmp(dev->name, "eth0") == 0) {
memcpy(mac, eeprom, 6);
} else if (strcmp(dev->name, "eth1") == 0) {
eeprom += 6;
memcpy(mac, eeprom, 6);
} else {
printf("%s: unknown ethernet device %s\n", __func__, dev->name);
return;
}
/* Use fixed address if the above address is invalid */
if (mac[0] != 0x00 || (mac[0] == 0xff && mac[5] == 0xff)) {
#else
if (1) {
#endif
mac[0] = 0x00;
mac[1] = 0x03;
mac[2] = 0x7f;
mac[3] = 0x09;
mac[4] = 0x0b;
mac[5] = 0xad;
printf("No valid address in Flash. Using fixed address\n");
} else {
printf("Fetching MAC Address from 0x%p\n", __func__, eeprom);
}
}
int ag7240_enet_initialize(bd_t * bis)
{
struct eth_device *dev[CFG_AG7240_NMACS];
u32 mask, mac_h, mac_l;
int i;
printf("ag7240_enet_initialize...\n");
if(is_ar933x() ) {
u32 rd = 0x0;
/*
* To get s26 out of reset, we have to...
* bit0~bit3: has to be deasserted
* bit4: has to be asserted
*/
rd = ar7240_reg_rd(AR7240_S26_CLK_CTRL_OFFSET) & ~(0x1f);
rd |= 0x10;
ar7240_reg_wr(AR7240_S26_CLK_CTRL_OFFSET, rd);
if(ar7240_reg_rd(AR7240_RESET)!=0)
ar7240_reg_wr(AR7240_RESET,0);
}
for (i = 0;i < CFG_AG7240_NMACS;i++) {
if ((dev[i] = (struct eth_device *) malloc(sizeof (struct eth_device))) == NULL) {
puts("malloc failed\n");
return 0;
}
if ((ag7240_macs[i] = (ag7240_mac_t *) malloc(sizeof (ag7240_mac_t))) == NULL) {
puts("malloc failed\n");
return 0;
}
memset(ag7240_macs[i], 0, sizeof(ag7240_macs[i]));
memset(dev[i], 0, sizeof(dev[i]));
sprintf(dev[i]->name, "eth%d", i);
ag7240_get_ethaddr(dev[i]);
ag7240_macs[i]->mac_unit = i;
ag7240_macs[i]->mac_base = i ? AR7240_GE1_BASE : AR7240_GE0_BASE ;
ag7240_macs[i]->dev = dev[i];
dev[i]->iobase = 0;
dev[i]->init = ag7240_clean_rx;
dev[i]->halt = ag7240_halt;
dev[i]->send = ag7240_send;
dev[i]->recv = ag7240_recv;
dev[i]->priv = (void *)ag7240_macs[i];
}
for (i = 0;i < CFG_AG7240_NMACS;i++) {
eth_register(dev[i]);
#if(CONFIG_COMMANDS & CFG_CMD_MII)
miiphy_register(dev[i]->name, ag7240_miiphy_read, ag7240_miiphy_write);
#endif
ag7240_reg_rmw_set(ag7240_macs[i], AG7240_MAC_CFG1, AG7240_MAC_CFG1_SOFT_RST
| AG7240_MAC_CFG1_RX_RST | AG7240_MAC_CFG1_TX_RST);
if(!i) {
mask = (AR7240_RESET_GE0_MAC | AR7240_RESET_GE0_PHY |
AR7240_RESET_GE1_MAC | AR7240_RESET_GE1_PHY);
if (is_ar7241() || is_ar7242() || is_wasp()) {
mask = mask | AR7240_RESET_GE0_MDIO | AR7240_RESET_GE1_MDIO;
printf(" wasp reset mask:%x \n",mask);
}
ar7240_reg_rmw_set(AR7240_RESET, mask);
if(!is_ar933x())
udelay(1000 * 100);
ar7240_reg_rmw_clear(AR7240_RESET, mask);
if(!is_ar933x())
udelay(1000 * 100);
if(!is_ar933x())
udelay(10 * 1000);
}
ag7240_hw_start(ag7240_macs[i]);
ag7240_setup_fifos(ag7240_macs[i]);
if(!is_ar933x())
udelay(100 * 1000);
{
unsigned char *mac = dev[i]->enetaddr;
printf("%s: %02x:%02x:%02x:%02x:%02x:%02x\n", dev[i]->name,
mac[0] & 0xff, mac[1] & 0xff, mac[2] & 0xff,
mac[3] & 0xff, mac[4] & 0xff, mac[5] & 0xff);
}
mac_l = (dev[i]->enetaddr[4] << 8) | (dev[i]->enetaddr[5]);
mac_h = (dev[i]->enetaddr[0] << 24) | (dev[i]->enetaddr[1] << 16) |
(dev[i]->enetaddr[2] << 8) | (dev[i]->enetaddr[3] << 0);
ag7240_reg_wr(ag7240_macs[i], AG7240_GE_MAC_ADDR1, mac_l);
ag7240_reg_wr(ag7240_macs[i], AG7240_GE_MAC_ADDR2, mac_h);
/* if using header for register configuration, we have to */
/* configure s26 register after frame transmission is enabled */
if (ag7240_macs[i]->mac_unit == 0) { /* WAN Phy */
#ifdef CONFIG_AR7242_S16_PHY
if (is_ar7242() || is_wasp()) {
athrs16_reg_init();
} else
#endif
{
#ifdef CFG_ATHRS26_PHY
athrs26_reg_init();
#endif
#ifdef CFG_ATHRS27_PHY
printf("s27 reg init \n");
athrs27_reg_init();
#endif
#ifdef CONFIG_F1E_PHY
printf("F1Phy reg init \n");
athr_reg_init();
#endif
}
} else {
#ifdef CFG_ATHRS26_PHY
printf("athrs26_reg_init_lan\n");
athrs26_reg_init_lan();
#endif
#ifdef CFG_ATHRS27_PHY
printf("s27 reg init lan \n");
athrs27_reg_init_lan();
#endif
}
ag7240_phy_setup(ag7240_macs[i]->mac_unit);
printf("%s up\n",dev[i]->name);
}
return 1;
}
#if (CONFIG_COMMANDS & CFG_CMD_MII)
uint16_t
ag7240_miiphy_read(char *devname, uint32_t phy_addr, uint8_t reg)
{
ag7240_mac_t *mac = ag7240_name2mac(devname);
uint16_t addr = (phy_addr << AG7240_ADDR_SHIFT) | reg, val;
volatile int rddata;
uint16_t ii = 0xFFFF;
/*
* Check for previous transactions are complete. Added to avoid
* race condition while running at higher frequencies.
*/
do
{
udelay(5);
rddata = ag7240_reg_rd(mac, AG7240_MII_MGMT_IND) & 0x1;
}while(rddata && --ii);
if (ii == 0)
printf("ERROR:%s:%d transaction failed\n",__func__,__LINE__);
ag7240_reg_wr(mac, AG7240_MII_MGMT_CMD, 0x0);
ag7240_reg_wr(mac, AG7240_MII_MGMT_ADDRESS, addr);
ag7240_reg_wr(mac, AG7240_MII_MGMT_CMD, AG7240_MGMT_CMD_READ);
do
{
udelay(5);
rddata = ag7240_reg_rd(mac, AG7240_MII_MGMT_IND) & 0x1;
}while(rddata && --ii);
if(ii==0)
printf("Error!!! Leave ag7240_miiphy_read without polling correct status!\n");
val = ag7240_reg_rd(mac, AG7240_MII_MGMT_STATUS);
ag7240_reg_wr(mac, AG7240_MII_MGMT_CMD, 0x0);
return val;
}
void
ag7240_miiphy_write(char *devname, uint32_t phy_addr, uint8_t reg, uint16_t data)
{
ag7240_mac_t *mac = ag7240_name2mac(devname);
uint16_t addr = (phy_addr << AG7240_ADDR_SHIFT) | reg;
volatile int rddata;
uint16_t ii = 0xFFFF;
/*
* Check for previous transactions are complete. Added to avoid
* race condition while running at higher frequencies.
*/
do
{
udelay(5);
rddata = ag7240_reg_rd(mac, AG7240_MII_MGMT_IND) & 0x1;
}while(rddata && --ii);
if (ii == 0)
printf("ERROR:%s:%d transaction failed\n",__func__,__LINE__);
ag7240_reg_wr(mac, AG7240_MII_MGMT_ADDRESS, addr);
ag7240_reg_wr(mac, AG7240_MII_MGMT_CTRL, data);
do
{
rddata = ag7240_reg_rd(mac, AG7240_MII_MGMT_IND) & 0x1;
}while(rddata && --ii);
if(ii==0)
printf("Error!!! Leave ag7240_miiphy_write without polling correct status!\n");
}
#endif /* CONFIG_COMMANDS & CFG_CMD_MII */