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MV88X3120_phy.c
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MV88X3120_phy.c
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#include "tn40.h"
#include "MV88X3120_phy.h"
#define MANUF_MODEL_NUM_MASK (0x3F)
#define MANUF_MODEL_NUM_BIT_POS (4)
#define MV88X3120_FILE_OFFSET (16)
#define AN_IN_PROGRESS (0x0000) /* Speed not resolved yet, auto-negotiation in progress */
/* #define SPEED_10BT (0x0001) Not supported */
#define SPEED_RES_100M_FD (0x0002) /* 100M Full Duplex */
#define SPEED_RES_1GIG_FD (0x0003) /* 1Gig Full Duplex */
#define SPEED_RES_10GIG (0x0004) /* 10Gig Full Duplex */
#define SPEED_RES_100M_HD (0x0005) /* 100M Half Duplex */
/* #define SPEED_RES_1GIG_HD (0x0006) Not supported for SGMII */
#define LINK_LOOP_MAX (25)
void MV88X3120_register_settings(struct bdx_priv *priv);
int MV88X3120_mdio_reset(struct bdx_priv *priv, int port, unsigned short phy);
u32 MV88X3120_link_changed(struct bdx_priv *priv);
void MV88X3120_leds(struct bdx_priv *priv, enum PHY_LEDS_OP op);
#ifdef _EEE_
void MV88X3120_enable_eee(struct bdx_priv *priv);
#endif
int MV88X3120_set_speed(struct bdx_priv *priv, signed int speed)
{
u16 val = 0;
u16 port = priv->phy_mdio_port;
int rVal = 0;
if (priv->autoneg == AUTONEG_ENABLE) {
val = (1 << 3) | (1 << 2) | (1 << 1);
} else {
priv->autoneg = AUTONEG_DISABLE;
switch (speed) {
case 10000: /*10G */
pr_debug("MV88X3120 speed 10G\n");
val = (1 << 3);
break;
case 1000: /*1G */
pr_debug("MV88X3120 speed 1G\n");
val = (1 << 2);
break;
case 100: /*100m */
pr_debug("MV88X3120 speed 100m\n");
val = (1 << 1);
break;
default:
pr_err("does not support speed %u\n", speed);
rVal = -1;
break;
}
}
if (rVal == 0) {
/* set speed */
BDX_MDIO_WRITE(priv, 0x01, 49192, val);
/* restart autoneg */
val = (1 << 12) | (1 << 9) | (1 << 13);
BDX_MDIO_WRITE(priv, 0x07, 0x0, val);
}
return rVal;
}
__init int MV88X3120_mdio_reset(struct bdx_priv *priv, int port,
unsigned short phy)
{
unsigned short val, val1;
int rVal = 0;
u32 j, MV88X3120_phy_initdata_size =
sizeof(MV88X3120_phy_initdata) / sizeof(u16);
val = bdx_mdio_read(priv, 1, port, 3);
val = (val & (MANUF_MODEL_NUM_MASK << MANUF_MODEL_NUM_BIT_POS)) >> MANUF_MODEL_NUM_BIT_POS; /* modelNo */
val1 = bdx_mdio_read(priv, 3, port, 53249); /* revNo */
if (val == 8 && val1 < 3) {
val = 9;
}
pr_debug("MV88X3120 modelNo = %d revNo %d\n", val, val1);
do {
val = bdx_mdio_read(priv, 1, port, 49152);
BDX_MDIO_WRITE(priv, 1, 49152, (val | 1 << 15));
msleep(250);
if ((val = bdx_mdio_read(priv, 3, port, 0xD000)) != 0x000A) {
pr_err
("MV88X3120 Initialization Error. Expected 0x000A, read 0x%04X\n",
(unsigned)val);
rVal = -1;
break;
} else {
pr_debug("MV88X3120 Initializing data...\n");
}
BDX_MDIO_WRITE(priv, 3, 0xD004, 0);
BDX_MDIO_WRITE(priv, 3, 0xD005, 0);
for (j = MV88X3120_FILE_OFFSET; j < MV88X3120_phy_initdata_size;
j++) {
val = swab16(MV88X3120_phy_initdata[j]);
BDX_MDIO_WRITE(priv, 3, 0xD006, val);
}
pr_debug("MV88X3120 loaded %d 16bit words\n",
MV88X3120_phy_initdata_size);
val = bdx_mdio_read(priv, 3, port, 0xD000);
BDX_MDIO_WRITE(priv, 3, 0xD000, (val | (1 << 6)));
msleep(500);
if (!((val = bdx_mdio_read(priv, 3, port, 0xD000)) & (1 << 4))) {
pr_err
("MV88X3120 initdata not applied. Expected bit 4 to be 1, read 0x%04X\n",
(unsigned)val);
rVal = -1;
break;
} else {
pr_err("MV88X3120 initdata applied\n");
}
/* verify reset complete */
for (j = 0; j < 10; j++) {
if (!
((val =
bdx_mdio_read(priv, 1, port, 0)) & (1 << 15))) {
break;
}
pr_debug("MV88X3120 waiting for reset complete 0x%x\n",
val);
msleep(10);
}
BDX_MDIO_WRITE(priv, 4, 49152, 0x00c2);
BDX_MDIO_WRITE(priv, 1, 36866, 0x0009);
val = bdx_mdio_read(priv, 1, port, 49190);
val1 = bdx_mdio_read(priv, 1, port, 49191);
pr_err("MV88X3120 I/D version is %d.%d.%d.%d\n",
((val & 0xff00) >> 8), (val & 0x00ff),
((val1 & 0xff00) >> 8), (val1 & 0x00ff));
val = bdx_mdio_read(priv, 7, port, 1);
val = bdx_mdio_read(priv, 1, port, 49154);
val &= ~(1 << 6);
BDX_MDIO_WRITE(priv, 1, 49154, val);
}
while (0);
return rVal;
}
static int MV88X3120_get_link_speed(struct bdx_priv *priv)
{
unsigned short val, leds;
int link = 0;
#ifdef DEBUG
val = bdx_mdio_read(priv, 3, priv->phy_mdio_port, 8);
val = bdx_mdio_read(priv, 3, priv->phy_mdio_port, 8);
pr_debug("MV88X3120 3.8 = 0x%x\n", val);
val = bdx_mdio_read(priv, 3, priv->phy_mdio_port, 1);
val = bdx_mdio_read(priv, 3, priv->phy_mdio_port, 1);
pr_debug("MV88X3120 3.1 = 0x%x\n", val);
val = bdx_mdio_read(priv, 1, priv->phy_mdio_port, 49192);
val = bdx_mdio_read(priv, 1, priv->phy_mdio_port, 49192);
pr_debug("MV88X3120 1.49192 = 0x%x\n", val);
#endif
val = bdx_mdio_read(priv, 1, priv->phy_mdio_port, 36869);
val = bdx_mdio_read(priv, 1, priv->phy_mdio_port, 36869);
pr_debug("MV88X3120 1.36869 = 0x%x\n", val);
val = bdx_mdio_read(priv, 7, priv->phy_mdio_port, 1);
val = bdx_mdio_read(priv, 7, priv->phy_mdio_port, 1);
pr_debug("MV88X3120 7.1 = 0x%x\n", val);
if (val & (1 << 2)) { /* Link up */
leds = bdx_mdio_read(priv, 1, priv->phy_mdio_port, 49161);
val = bdx_mdio_read(priv, 1, priv->phy_mdio_port, 49192);
val = (val & 0x00F0) >> 4;
switch (val) {
case SPEED_RES_10GIG:
link = SPEED_10000;
bdx_mdio_write(priv, 1, priv->phy_mdio_port, 49161, (leds & 0xfff0) | 0x0009); /* led_speed0 on */
pr_debug("MV88X3120 10G link detected\n");
break;
case SPEED_RES_1GIG_FD:
link = SPEED_1000;
bdx_mdio_write(priv, 1, priv->phy_mdio_port, 49161, (leds & 0xfff0) | 0x0006); /* led_speed1 on */
pr_debug("MV88X3120 1G link detected\n");
break;
case SPEED_RES_100M_FD:
case SPEED_RES_100M_HD:
link = SPEED_100;
bdx_mdio_write(priv, 1, priv->phy_mdio_port, 49161, (leds & 0xfff0) | 0x000a); /* led_speeds off */
pr_debug("MV88X3120 100M %s link detected\n",
(val ==
SPEED_RES_100M_HD) ? "Half Duplex" : "");
break;
case AN_IN_PROGRESS:
bdx_mdio_write(priv, 1, priv->phy_mdio_port, 49161, (leds & 0xfff0) | 0x000a); /* led_speeds off */
pr_debug("MV88X3120 auto negotiation in progress...\n");
break;
default:
bdx_mdio_write(priv, 1, priv->phy_mdio_port, 49161, (leds & 0xfff0) | 0x000a); /* led_speeds off */
pr_debug
("MV88X3120 internal error - unknown link speed value (0x%x) !\n",
val);
break;
}
priv->errmsg_count = 0;
} else {
if (++priv->errmsg_count < MAX_ERRMSGS) {
pr_debug("MV88X3120 link down.\n");
}
}
return link;
}
u32 MV88X3120_link_changed(struct bdx_priv *priv)
{
u32 link, speed;
speed = MV88X3120_get_link_speed(priv);
if (speed != (u32) priv->link_speed) {
switch (speed) {
case SPEED_10000:
pr_debug("MV88X3120 10G link detected\n");
#ifdef _EEE_
MV88X3120_enable_eee(priv);
#endif
break;
case SPEED_1000:
pr_debug("MV88X3120 1G link detected\n");
break;
case SPEED_100:
pr_debug("MV88X3120 100M link detected\n");
break;
default:
pr_debug("MV88X3120 link down.\n");
break;
}
bdx_speed_changed(priv, speed);
}
link = 0;
if ((!speed)
|| (!(link = (READ_REG(priv, regMAC_LNK_STAT) & MAC_LINK_STAT)))) {
u32 timeout;
u16 leds = bdx_mdio_read(priv, 1, priv->phy_mdio_port, 49161);
bdx_mdio_write(priv, 1, priv->phy_mdio_port, 49161, (leds & 0xfff0) | 0x000a); /* led_speeds off */
if (speed) {
timeout = 1000000; /* 1/5 sec */
if (priv->link_loop_cnt++ > LINK_LOOP_MAX) {
bdx_speed_changed(priv, 0);
priv->link_loop_cnt = 0;
pr_debug
("MV88X3120 trying to recover link after %d tries\n",
LINK_LOOP_MAX);
}
} else {
timeout = 5000000; /* 1 sec */
}
pr_debug
("MV88X3120 link = 0x%x speed = 0x%x setting %d timer\n",
link, speed, timeout);
WRITE_REG(priv, 0x5150, timeout);
}
return link;
}
void MV88X3120_leds(struct bdx_priv *priv, enum PHY_LEDS_OP op)
{
switch (op) {
case PHY_LEDS_SAVE:
priv->phy_ops.leds[0] =
bdx_mdio_read(priv, 1, priv->phy_mdio_port, 49161);
bdx_mdio_write(priv, 1, priv->phy_mdio_port, 49161, 0xf);
bdx_mdio_write(priv, 1, priv->phy_mdio_port, 49161, 0xff);
break;
case PHY_LEDS_RESTORE:
bdx_mdio_write(priv, 1, priv->phy_mdio_port, 49161,
priv->phy_ops.leds[0]);
break;
case PHY_LEDS_ON:
break;
case PHY_LEDS_OFF:
break;
default:
pr_debug("MV88X3120_leds() unknown op 0x%x\n", op);
break;
}
}
__init enum PHY_TYPE MV88X3120_register(struct bdx_priv *priv)
{
priv->phy_ops.mdio_reset = MV88X3120_mdio_reset;
priv->phy_ops.link_changed = MV88X3120_link_changed;
priv->phy_ops.ledset = MV88X3120_leds;
priv->phy_ops.mdio_speed = MDIO_SPEED_6MHZ;
MV88X3120_register_settings(priv);
return PHY_TYPE_MV88X3120;
}