#include <common.h>
#include <miiphy.h>
-#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
#include <asm/types.h>
#include <linux/list.h>
#include <malloc.h>
#include <net.h>
/* local debug macro */
-#define MII_DEBUG
#undef MII_DEBUG
#undef debug
struct mii_dev {
struct list_head link;
- char *name;
- int (*read) (char *devname, unsigned char addr,
+ const char *name;
+ int (*read) (const char *devname, unsigned char addr,
unsigned char reg, unsigned short *value);
- int (*write) (char *devname, unsigned char addr,
+ int (*write) (const char *devname, unsigned char addr,
unsigned char reg, unsigned short value);
};
static struct list_head mii_devs;
static struct mii_dev *current_mii;
+/*
+ * Lookup the mii_dev struct by the registered device name.
+ */
+static struct mii_dev *miiphy_get_dev_by_name(const char *devname, int quiet)
+{
+ struct list_head *entry;
+ struct mii_dev *dev;
+
+ if (!devname) {
+ printf("NULL device name!\n");
+ return NULL;
+ }
+
+ list_for_each(entry, &mii_devs) {
+ dev = list_entry(entry, struct mii_dev, link);
+ if (strcmp(dev->name, devname) == 0)
+ return dev;
+ }
+
+ if (!quiet)
+ printf("No such device: %s\n", devname);
+ return NULL;
+}
+
/*****************************************************************************
*
* Initialize global data. Need to be called before any other miiphy routine.
*/
-void miiphy_init ()
+void miiphy_init(void)
{
INIT_LIST_HEAD (&mii_devs);
current_mii = NULL;
*
* Register read and write MII access routines for the device <name>.
*/
-void miiphy_register (char *name,
- int (*read) (char *devname, unsigned char addr,
+void miiphy_register(const char *name,
+ int (*read) (const char *devname, unsigned char addr,
unsigned char reg, unsigned short *value),
- int (*write) (char *devname, unsigned char addr,
+ int (*write) (const char *devname, unsigned char addr,
unsigned char reg, unsigned short value))
{
- struct list_head *entry;
struct mii_dev *new_dev;
- struct mii_dev *miidev;
unsigned int name_len;
+ char *new_name;
/* check if we have unique name */
- list_for_each (entry, &mii_devs) {
- miidev = list_entry (entry, struct mii_dev, link);
- if (strcmp (miidev->name, name) == 0) {
- printf ("miiphy_register: non unique device name "
- "'%s'\n", name);
- return;
- }
+ new_dev = miiphy_get_dev_by_name(name, 1);
+ if (new_dev) {
+ printf("miiphy_register: non unique device name '%s'\n", name);
+ return;
}
/* allocate memory */
INIT_LIST_HEAD (&new_dev->link);
new_dev->read = read;
new_dev->write = write;
- new_dev->name = (char *)(new_dev + 1);
- strncpy (new_dev->name, name, name_len);
- new_dev->name[name_len] = '\0';
+ new_dev->name = new_name = (char *)(new_dev + 1);
+ strncpy (new_name, name, name_len);
+ new_name[name_len] = '\0';
debug ("miiphy_register: added '%s', read=0x%08lx, write=0x%08lx\n",
new_dev->name, new_dev->read, new_dev->write);
current_mii = new_dev;
}
-int miiphy_set_current_dev (char *devname)
+int miiphy_set_current_dev(const char *devname)
{
- struct list_head *entry;
struct mii_dev *dev;
- list_for_each (entry, &mii_devs) {
- dev = list_entry (entry, struct mii_dev, link);
-
- if (strcmp (devname, dev->name) == 0) {
- current_mii = dev;
- return 0;
- }
+ dev = miiphy_get_dev_by_name(devname, 0);
+ if (dev) {
+ current_mii = dev;
+ return 0;
}
- printf ("No such device: %s\n", devname);
return 1;
}
-char *miiphy_get_current_dev ()
+const char *miiphy_get_current_dev(void)
{
if (current_mii)
return current_mii->name;
return NULL;
}
+static struct mii_dev *miiphy_get_active_dev(const char *devname)
+{
+ /* If the current mii is the one we want, return it */
+ if (current_mii)
+ if (strcmp(current_mii->name, devname) == 0)
+ return current_mii;
+
+ /* Otherwise, set the active one to the one we want */
+ if (miiphy_set_current_dev(devname))
+ return NULL;
+ else
+ return current_mii;
+}
+
/*****************************************************************************
*
* Read to variable <value> from the PHY attached to device <devname>,
* Returns:
* 0 on success
*/
-int miiphy_read (char *devname, unsigned char addr, unsigned char reg,
+int miiphy_read(const char *devname, unsigned char addr, unsigned char reg,
unsigned short *value)
{
- struct list_head *entry;
struct mii_dev *dev;
- int found_dev = 0;
- int read_ret = 0;
-
- if (!devname) {
- printf ("NULL device name!\n");
- return 1;
- }
- list_for_each (entry, &mii_devs) {
- dev = list_entry (entry, struct mii_dev, link);
+ dev = miiphy_get_active_dev(devname);
+ if (dev)
+ return dev->read(devname, addr, reg, value);
- if (strcmp (devname, dev->name) == 0) {
- found_dev = 1;
- read_ret = dev->read (devname, addr, reg, value);
- break;
- }
- }
-
- if (found_dev == 0)
- printf ("No such device: %s\n", devname);
-
- return ((found_dev) ? read_ret : 1);
+ return 1;
}
/*****************************************************************************
* Returns:
* 0 on success
*/
-int miiphy_write (char *devname, unsigned char addr, unsigned char reg,
+int miiphy_write(const char *devname, unsigned char addr, unsigned char reg,
unsigned short value)
{
- struct list_head *entry;
struct mii_dev *dev;
- int found_dev = 0;
- int write_ret = 0;
-
- if (!devname) {
- printf ("NULL device name!\n");
- return 1;
- }
-
- list_for_each (entry, &mii_devs) {
- dev = list_entry (entry, struct mii_dev, link);
-
- if (strcmp (devname, dev->name) == 0) {
- found_dev = 1;
- write_ret = dev->write (devname, addr, reg, value);
- break;
- }
- }
- if (found_dev == 0)
- printf ("No such device: %s\n", devname);
+ dev = miiphy_get_active_dev(devname);
+ if (dev)
+ return dev->write(devname, addr, reg, value);
- return ((found_dev) ? write_ret : 1);
+ return 1;
}
/*****************************************************************************
* Returns:
* 0 on success
*/
-int miiphy_info (char *devname, unsigned char addr, unsigned int *oui,
+int miiphy_info(const char *devname, unsigned char addr, unsigned int *oui,
unsigned char *model, unsigned char *rev)
{
unsigned int reg = 0;
unsigned short tmp;
if (miiphy_read (devname, addr, PHY_PHYIDR2, &tmp) != 0) {
-#ifdef DEBUG
- puts ("PHY ID register 2 read failed\n");
-#endif
+ debug ("PHY ID register 2 read failed\n");
return (-1);
}
reg = tmp;
-#ifdef DEBUG
- printf ("PHY_PHYIDR2 @ 0x%x = 0x%04x\n", addr, reg);
-#endif
+ debug ("PHY_PHYIDR2 @ 0x%x = 0x%04x\n", addr, reg);
+
if (reg == 0xFFFF) {
/* No physical device present at this address */
return (-1);
}
if (miiphy_read (devname, addr, PHY_PHYIDR1, &tmp) != 0) {
-#ifdef DEBUG
- puts ("PHY ID register 1 read failed\n");
-#endif
+ debug ("PHY ID register 1 read failed\n");
return (-1);
}
reg |= tmp << 16;
-#ifdef DEBUG
- printf ("PHY_PHYIDR[1,2] @ 0x%x = 0x%08x\n", addr, reg);
-#endif
+ debug ("PHY_PHYIDR[1,2] @ 0x%x = 0x%08x\n", addr, reg);
+
*oui = (reg >> 10);
*model = (unsigned char)((reg >> 4) & 0x0000003F);
*rev = (unsigned char)(reg & 0x0000000F);
* Returns:
* 0 on success
*/
-int miiphy_reset (char *devname, unsigned char addr)
+int miiphy_reset(const char *devname, unsigned char addr)
{
unsigned short reg;
- int loop_cnt;
+ int timeout = 500;
if (miiphy_read (devname, addr, PHY_BMCR, ®) != 0) {
-#ifdef DEBUG
- printf ("PHY status read failed\n");
-#endif
+ debug ("PHY status read failed\n");
return (-1);
}
- if (miiphy_write (devname, addr, PHY_BMCR, reg | 0x8000) != 0) {
-#ifdef DEBUG
- puts ("PHY reset failed\n");
-#endif
+ if (miiphy_write (devname, addr, PHY_BMCR, reg | PHY_BMCR_RESET) != 0) {
+ debug ("PHY reset failed\n");
return (-1);
}
#ifdef CONFIG_PHY_RESET_DELAY
* auto-clearing). This should happen within 0.5 seconds per the
* IEEE spec.
*/
- loop_cnt = 0;
reg = 0x8000;
- while (((reg & 0x8000) != 0) && (loop_cnt++ < 1000000)) {
- if (miiphy_read (devname, addr, PHY_BMCR, ®) != 0) {
-# ifdef DEBUG
- puts ("PHY status read failed\n");
-# endif
- return (-1);
+ while (((reg & 0x8000) != 0) && timeout--) {
+ if (miiphy_read(devname, addr, PHY_BMCR, ®) != 0) {
+ debug("PHY status read failed\n");
+ return -1;
}
+ udelay(1000);
}
if ((reg & 0x8000) == 0) {
return (0);
/*****************************************************************************
*
- * Determine the ethernet speed (10/100).
+ * Determine the ethernet speed (10/100/1000). Return 10 on error.
*/
-int miiphy_speed (char *devname, unsigned char addr)
+int miiphy_speed(const char *devname, unsigned char addr)
{
- unsigned short reg;
+ u16 bmcr, anlpar;
#if defined(CONFIG_PHY_GIGE)
- if (miiphy_read (devname, addr, PHY_1000BTSR, ®)) {
- printf ("PHY 1000BT Status read failed\n");
- } else {
- if (reg != 0xFFFF) {
- if ((reg & (PHY_1000BTSR_1000FD | PHY_1000BTSR_1000HD))
- != 0) {
- return (_1000BASET);
- }
- }
+ u16 btsr;
+
+ /*
+ * Check for 1000BASE-X. If it is supported, then assume that the speed
+ * is 1000.
+ */
+ if (miiphy_is_1000base_x (devname, addr)) {
+ return _1000BASET;
+ }
+ /*
+ * No 1000BASE-X, so assume 1000BASE-T/100BASE-TX/10BASE-T register set.
+ */
+ /* Check for 1000BASE-T. */
+ if (miiphy_read (devname, addr, PHY_1000BTSR, &btsr)) {
+ printf ("PHY 1000BT status");
+ goto miiphy_read_failed;
+ }
+ if (btsr != 0xFFFF &&
+ (btsr & (PHY_1000BTSR_1000FD | PHY_1000BTSR_1000HD))) {
+ return _1000BASET;
}
#endif /* CONFIG_PHY_GIGE */
/* Check Basic Management Control Register first. */
- if (miiphy_read (devname, addr, PHY_BMCR, ®)) {
- puts ("PHY speed read failed, assuming 10bT\n");
- return (_10BASET);
+ if (miiphy_read (devname, addr, PHY_BMCR, &bmcr)) {
+ printf ("PHY speed");
+ goto miiphy_read_failed;
}
/* Check if auto-negotiation is on. */
- if ((reg & PHY_BMCR_AUTON) != 0) {
+ if (bmcr & PHY_BMCR_AUTON) {
/* Get auto-negotiation results. */
- if (miiphy_read (devname, addr, PHY_ANLPAR, ®)) {
- puts ("PHY AN speed read failed, assuming 10bT\n");
- return (_10BASET);
- }
- if ((reg & PHY_ANLPAR_100) != 0) {
- return (_100BASET);
- } else {
- return (_10BASET);
+ if (miiphy_read (devname, addr, PHY_ANLPAR, &anlpar)) {
+ printf ("PHY AN speed");
+ goto miiphy_read_failed;
}
+ return (anlpar & PHY_ANLPAR_100) ? _100BASET : _10BASET;
}
/* Get speed from basic control settings. */
- else if (reg & PHY_BMCR_100MB) {
- return (_100BASET);
- } else {
- return (_10BASET);
- }
+ return (bmcr & PHY_BMCR_100MB) ? _100BASET : _10BASET;
+miiphy_read_failed:
+ printf (" read failed, assuming 10BASE-T\n");
+ return _10BASET;
}
/*****************************************************************************
*
- * Determine full/half duplex.
+ * Determine full/half duplex. Return half on error.
*/
-int miiphy_duplex (char *devname, unsigned char addr)
+int miiphy_duplex(const char *devname, unsigned char addr)
{
- unsigned short reg;
+ u16 bmcr, anlpar;
#if defined(CONFIG_PHY_GIGE)
- if (miiphy_read (devname, addr, PHY_1000BTSR, ®)) {
- printf ("PHY 1000BT Status read failed\n");
- } else {
- if ((reg != 0xFFFF) &&
- (reg & (PHY_1000BTSR_1000FD | PHY_1000BTSR_1000HD))) {
- if ((reg & PHY_1000BTSR_1000FD) != 0) {
- return (FULL);
- } else {
- return (HALF);
- }
+ u16 btsr;
+
+ /* Check for 1000BASE-X. */
+ if (miiphy_is_1000base_x (devname, addr)) {
+ /* 1000BASE-X */
+ if (miiphy_read (devname, addr, PHY_ANLPAR, &anlpar)) {
+ printf ("1000BASE-X PHY AN duplex");
+ goto miiphy_read_failed;
+ }
+ }
+ /*
+ * No 1000BASE-X, so assume 1000BASE-T/100BASE-TX/10BASE-T register set.
+ */
+ /* Check for 1000BASE-T. */
+ if (miiphy_read (devname, addr, PHY_1000BTSR, &btsr)) {
+ printf ("PHY 1000BT status");
+ goto miiphy_read_failed;
+ }
+ if (btsr != 0xFFFF) {
+ if (btsr & PHY_1000BTSR_1000FD) {
+ return FULL;
+ } else if (btsr & PHY_1000BTSR_1000HD) {
+ return HALF;
}
}
#endif /* CONFIG_PHY_GIGE */
/* Check Basic Management Control Register first. */
- if (miiphy_read (devname, addr, PHY_BMCR, ®)) {
- puts ("PHY duplex read failed, assuming half duplex\n");
- return (HALF);
+ if (miiphy_read (devname, addr, PHY_BMCR, &bmcr)) {
+ puts ("PHY duplex");
+ goto miiphy_read_failed;
}
/* Check if auto-negotiation is on. */
- if ((reg & PHY_BMCR_AUTON) != 0) {
+ if (bmcr & PHY_BMCR_AUTON) {
/* Get auto-negotiation results. */
- if (miiphy_read (devname, addr, PHY_ANLPAR, ®)) {
- puts ("PHY AN duplex read failed, assuming half duplex\n");
- return (HALF);
- }
-
- if ((reg & (PHY_ANLPAR_10FD | PHY_ANLPAR_TXFD)) != 0) {
- return (FULL);
- } else {
- return (HALF);
+ if (miiphy_read (devname, addr, PHY_ANLPAR, &anlpar)) {
+ puts ("PHY AN duplex");
+ goto miiphy_read_failed;
}
+ return (anlpar & (PHY_ANLPAR_10FD | PHY_ANLPAR_TXFD)) ?
+ FULL : HALF;
}
/* Get speed from basic control settings. */
- else if (reg & PHY_BMCR_DPLX) {
- return (FULL);
- } else {
- return (HALF);
- }
+ return (bmcr & PHY_BMCR_DPLX) ? FULL : HALF;
+miiphy_read_failed:
+ printf (" read failed, assuming half duplex\n");
+ return HALF;
+}
+
+/*****************************************************************************
+ *
+ * Return 1 if PHY supports 1000BASE-X, 0 if PHY supports 10BASE-T/100BASE-TX/
+ * 1000BASE-T, or on error.
+ */
+int miiphy_is_1000base_x(const char *devname, unsigned char addr)
+{
+#if defined(CONFIG_PHY_GIGE)
+ u16 exsr;
+
+ if (miiphy_read (devname, addr, PHY_EXSR, &exsr)) {
+ printf ("PHY extended status read failed, assuming no "
+ "1000BASE-X\n");
+ return 0;
+ }
+ return 0 != (exsr & (PHY_EXSR_1000XF | PHY_EXSR_1000XH));
+#else
+ return 0;
+#endif
}
-#ifdef CFG_FAULT_ECHO_LINK_DOWN
+#ifdef CONFIG_SYS_FAULT_ECHO_LINK_DOWN
/*****************************************************************************
*
* Determine link status
*/
-int miiphy_link (char *devname, unsigned char addr)
+int miiphy_link(const char *devname, unsigned char addr)
{
unsigned short reg;
}
}
#endif
-#endif /* CONFIG_MII */
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