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path: root/drivers/net/davinci_emac.c
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Diffstat (limited to 'drivers/net/davinci_emac.c')
-rw-r--r--drivers/net/davinci_emac.c209
1 files changed, 135 insertions, 74 deletions
diff --git a/drivers/net/davinci_emac.c b/drivers/net/davinci_emac.c
index a8905b88f1..7dacb2368d 100644
--- a/drivers/net/davinci_emac.c
+++ b/drivers/net/davinci_emac.c
@@ -48,9 +48,9 @@ unsigned int emac_dbg = 0;
#define debug_emac(fmt,args...) if (emac_dbg) printf(fmt,##args)
#ifdef DAVINCI_EMAC_GIG_ENABLE
-#define emac_gigabit_enable() davinci_eth_gigabit_enable()
+#define emac_gigabit_enable(phy_addr) davinci_eth_gigabit_enable(phy_addr)
#else
-#define emac_gigabit_enable() /* no gigabit to enable */
+#define emac_gigabit_enable(phy_addr) /* no gigabit to enable */
#endif
static void davinci_eth_mdio_enable(void);
@@ -80,10 +80,15 @@ static int emac_rx_queue_active = 0;
/* Receive packet buffers */
static unsigned char emac_rx_buffers[EMAC_MAX_RX_BUFFERS * (EMAC_MAX_ETHERNET_PKT_SIZE + EMAC_PKT_ALIGN)];
+#define MAX_PHY 3
+
/* PHY address for a discovered PHY (0xff - not found) */
-static volatile u_int8_t active_phy_addr = 0xff;
+static u_int8_t active_phy_addr[MAX_PHY] = { 0xff, 0xff, 0xff };
+
+/* number of PHY found active */
+static u_int8_t num_phy;
-phy_t phy;
+phy_t phy[MAX_PHY];
static int davinci_eth_set_mac_addr(struct eth_device *dev)
{
@@ -147,27 +152,30 @@ static int davinci_eth_phy_detect(void)
{
u_int32_t phy_act_state;
int i;
+ int j;
+ unsigned int count = 0;
- active_phy_addr = 0xff;
+ active_phy_addr[0] = 0xff;
+ active_phy_addr[1] = 0xff;
+ active_phy_addr[2] = 0xff;
+
+ udelay(1000);
+ phy_act_state = readl(&adap_mdio->ALIVE);
- phy_act_state = readl(&adap_mdio->ALIVE) & EMAC_MDIO_PHY_MASK;
if (phy_act_state == 0)
- return(0); /* No active PHYs */
+ return 0; /* No active PHYs */
debug_emac("davinci_eth_phy_detect(), ALIVE = 0x%08x\n", phy_act_state);
- for (i = 0; i < 32; i++) {
+ for (i = 0, j = 0; i < 32; i++)
if (phy_act_state & (1 << i)) {
- if (phy_act_state & ~(1 << i))
- return(0); /* More than one PHY */
- else {
- active_phy_addr = i;
- return(1);
- }
+ count++;
+ active_phy_addr[j++] = i;
}
- }
- return(0); /* Just to make GCC happy */
+ num_phy = count;
+
+ return count;
}
@@ -236,7 +244,18 @@ static int gen_is_phy_connected(int phy_addr)
{
u_int16_t dummy;
- return(davinci_eth_phy_read(phy_addr, MII_PHYSID1, &dummy));
+ return davinci_eth_phy_read(phy_addr, MII_PHYSID1, &dummy);
+}
+
+static int get_active_phy(void)
+{
+ int i;
+
+ for (i = 0; i < num_phy; i++)
+ if (phy[i].get_link_speed(active_phy_addr[i]))
+ return i;
+
+ return -1; /* Return error if no link */
}
static int gen_get_link_speed(int phy_addr)
@@ -279,16 +298,42 @@ static int gen_get_link_speed(int phy_addr)
static int gen_auto_negotiate(int phy_addr)
{
u_int16_t tmp;
+ u_int16_t val;
+ unsigned long cntr = 0;
+
+ if (!davinci_eth_phy_read(phy_addr, MII_BMCR, &tmp))
+ return 0;
+
+ val = tmp | BMCR_FULLDPLX | BMCR_ANENABLE |
+ BMCR_SPEED100;
+ davinci_eth_phy_write(phy_addr, MII_BMCR, val);
+
+ if (!davinci_eth_phy_read(phy_addr, MII_ADVERTISE, &val))
+ return 0;
+
+ val |= (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL |
+ ADVERTISE_10HALF);
+ davinci_eth_phy_write(phy_addr, MII_ADVERTISE, val);
if (!davinci_eth_phy_read(phy_addr, MII_BMCR, &tmp))
return(0);
/* Restart Auto_negotiation */
- tmp |= BMCR_ANENABLE;
+ tmp |= BMCR_ANRESTART;
davinci_eth_phy_write(phy_addr, MII_BMCR, tmp);
/*check AutoNegotiate complete */
- udelay (10000);
+ do {
+ udelay(40000);
+ if (!davinci_eth_phy_read(phy_addr, MII_BMSR, &tmp))
+ return 0;
+
+ if (tmp & BMSR_ANEGCOMPLETE)
+ break;
+
+ cntr++;
+ } while (cntr < 200);
+
if (!davinci_eth_phy_read(phy_addr, MII_BMSR, &tmp))
return(0);
@@ -312,11 +357,11 @@ static int davinci_mii_phy_write(const char *devname, unsigned char addr, unsign
}
#endif
-static void __attribute__((unused)) davinci_eth_gigabit_enable(void)
+static void __attribute__((unused)) davinci_eth_gigabit_enable(int phy_addr)
{
u_int16_t data;
- if (davinci_eth_phy_read(EMAC_MDIO_PHY_NUM, 0, &data)) {
+ if (davinci_eth_phy_read(phy_addr, 0, &data)) {
if (data & (1 << 6)) { /* speed selection MSB */
/*
* Check if link detected is giga-bit
@@ -336,6 +381,7 @@ static int davinci_eth_open(struct eth_device *dev, bd_t *bis)
dv_reg_p addr;
u_int32_t clkdiv, cnt;
volatile emac_desc *rx_desc;
+ int index;
debug_emac("+ emac_open\n");
@@ -434,10 +480,11 @@ static int davinci_eth_open(struct eth_device *dev, bd_t *bis)
/* We need to wait for MDIO to start */
udelay(1000);
- if (!phy.get_link_speed(active_phy_addr))
+ index = get_active_phy();
+ if (index == -1)
return(0);
- emac_gigabit_enable();
+ emac_gigabit_enable(active_phy_addr[index]);
/* Start receive process */
writel((u_int32_t)emac_rx_desc, &adap_emac->RX0HDP);
@@ -533,16 +580,16 @@ static int davinci_eth_send_packet (struct eth_device *dev,
volatile void *packet, int length)
{
int ret_status = -1;
-
+ int index;
tx_send_loop = 0;
- /* Return error if no link */
- if (!phy.get_link_speed (active_phy_addr)) {
- printf ("WARN: emac_send_packet: No link\n");
+ index = get_active_phy();
+ if (index == -1) {
+ printf(" WARN: emac_send_packet: No link\n");
return (ret_status);
}
- emac_gigabit_enable();
+ emac_gigabit_enable(active_phy_addr[index]);
/* Check packet size and if < EMAC_MIN_ETHERNET_PKT_SIZE, pad it up */
if (length < EMAC_MIN_ETHERNET_PKT_SIZE) {
@@ -562,12 +609,12 @@ static int davinci_eth_send_packet (struct eth_device *dev,
/* Wait for packet to complete or link down */
while (1) {
- if (!phy.get_link_speed (active_phy_addr)) {
+ if (!phy[index].get_link_speed(active_phy_addr[index])) {
davinci_eth_ch_teardown (EMAC_CH_TX);
return (ret_status);
}
- emac_gigabit_enable();
+ emac_gigabit_enable(active_phy_addr[index]);
if (readl(&adap_emac->TXINTSTATRAW) & 0x01) {
ret_status = length;
@@ -659,6 +706,7 @@ int davinci_emac_initialize(void)
u_int32_t phy_id;
u_int16_t tmp;
int i;
+ int ret;
struct eth_device *dev;
dev = malloc(sizeof *dev);
@@ -686,7 +734,7 @@ int davinci_emac_initialize(void)
for (i = 0; i < 256; i++) {
if (readl(&adap_mdio->ALIVE))
break;
- udelay(10);
+ udelay(1000);
}
if (i >= 256) {
@@ -694,64 +742,77 @@ int davinci_emac_initialize(void)
return(0);
}
- /* Find if a PHY is connected and get it's address */
- if (!davinci_eth_phy_detect())
+ /* Find if PHY(s) is/are connected */
+ ret = davinci_eth_phy_detect();
+ if (!ret)
return(0);
+ else
+ printf(" %d ETH PHY detected\n", ret);
/* Get PHY ID and initialize phy_ops for a detected PHY */
- if (!davinci_eth_phy_read(active_phy_addr, MII_PHYSID1, &tmp)) {
- active_phy_addr = 0xff;
- return(0);
- }
+ for (i = 0; i < num_phy; i++) {
+ if (!davinci_eth_phy_read(active_phy_addr[i], MII_PHYSID1,
+ &tmp)) {
+ active_phy_addr[i] = 0xff;
+ continue;
+ }
- phy_id = (tmp << 16) & 0xffff0000;
+ phy_id = (tmp << 16) & 0xffff0000;
- if (!davinci_eth_phy_read(active_phy_addr, MII_PHYSID2, &tmp)) {
- active_phy_addr = 0xff;
- return(0);
- }
+ if (!davinci_eth_phy_read(active_phy_addr[i], MII_PHYSID2,
+ &tmp)) {
+ active_phy_addr[i] = 0xff;
+ continue;
+ }
- phy_id |= tmp & 0x0000ffff;
+ phy_id |= tmp & 0x0000ffff;
- switch (phy_id) {
- case PHY_KSZ8873:
- sprintf(phy.name, "KSZ8873 @ 0x%02x", active_phy_addr);
- phy.init = ksz8873_init_phy;
- phy.is_phy_connected = ksz8873_is_phy_connected;
- phy.get_link_speed = ksz8873_get_link_speed;
- phy.auto_negotiate = ksz8873_auto_negotiate;
- break;
+ switch (phy_id) {
+ case PHY_KSZ8873:
+ sprintf(phy[i].name, "KSZ8873 @ 0x%02x",
+ active_phy_addr[i]);
+ phy[i].init = ksz8873_init_phy;
+ phy[i].is_phy_connected = ksz8873_is_phy_connected;
+ phy[i].get_link_speed = ksz8873_get_link_speed;
+ phy[i].auto_negotiate = ksz8873_auto_negotiate;
+ break;
case PHY_LXT972:
- sprintf(phy.name, "LXT972 @ 0x%02x", active_phy_addr);
- phy.init = lxt972_init_phy;
- phy.is_phy_connected = lxt972_is_phy_connected;
- phy.get_link_speed = lxt972_get_link_speed;
- phy.auto_negotiate = lxt972_auto_negotiate;
+ sprintf(phy[i].name, "LXT972 @ 0x%02x",
+ active_phy_addr[i]);
+ phy[i].init = lxt972_init_phy;
+ phy[i].is_phy_connected = lxt972_is_phy_connected;
+ phy[i].get_link_speed = lxt972_get_link_speed;
+ phy[i].auto_negotiate = lxt972_auto_negotiate;
break;
case PHY_DP83848:
- sprintf(phy.name, "DP83848 @ 0x%02x", active_phy_addr);
- phy.init = dp83848_init_phy;
- phy.is_phy_connected = dp83848_is_phy_connected;
- phy.get_link_speed = dp83848_get_link_speed;
- phy.auto_negotiate = dp83848_auto_negotiate;
+ sprintf(phy[i].name, "DP83848 @ 0x%02x",
+ active_phy_addr[i]);
+ phy[i].init = dp83848_init_phy;
+ phy[i].is_phy_connected = dp83848_is_phy_connected;
+ phy[i].get_link_speed = dp83848_get_link_speed;
+ phy[i].auto_negotiate = dp83848_auto_negotiate;
break;
case PHY_ET1011C:
- sprintf(phy.name, "ET1011C @ 0x%02x", active_phy_addr);
- phy.init = gen_init_phy;
- phy.is_phy_connected = gen_is_phy_connected;
- phy.get_link_speed = et1011c_get_link_speed;
- phy.auto_negotiate = gen_auto_negotiate;
+ sprintf(phy[i].name, "ET1011C @ 0x%02x",
+ active_phy_addr[i]);
+ phy[i].init = gen_init_phy;
+ phy[i].is_phy_connected = gen_is_phy_connected;
+ phy[i].get_link_speed = et1011c_get_link_speed;
+ phy[i].auto_negotiate = gen_auto_negotiate;
break;
default:
- sprintf(phy.name, "GENERIC @ 0x%02x", active_phy_addr);
- phy.init = gen_init_phy;
- phy.is_phy_connected = gen_is_phy_connected;
- phy.get_link_speed = gen_get_link_speed;
- phy.auto_negotiate = gen_auto_negotiate;
- }
+ sprintf(phy[i].name, "GENERIC @ 0x%02x",
+ active_phy_addr[i]);
+ phy[i].init = gen_init_phy;
+ phy[i].is_phy_connected = gen_is_phy_connected;
+ phy[i].get_link_speed = gen_get_link_speed;
+ phy[i].auto_negotiate = gen_auto_negotiate;
+ }
- debug("Ethernet PHY: %s\n", phy.name);
+ debug("Ethernet PHY: %s\n", phy.name);
- miiphy_register(phy.name, davinci_mii_phy_read, davinci_mii_phy_write);
+ miiphy_register(phy[i].name, davinci_mii_phy_read,
+ davinci_mii_phy_write);
+ }
return(1);
}
generated by cgit (git 2.34.1) at 2025-01-14 20:54:50 +0000