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-rw-r--r--common/miiphyutil.c249
1 files changed, 231 insertions, 18 deletions
diff --git a/common/miiphyutil.c b/common/miiphyutil.c
index 13b9c65..e411e57 100644
--- a/common/miiphyutil.c
+++ b/common/miiphyutil.c
@@ -30,6 +30,218 @@
#include <miiphy.h>
#if defined(CONFIG_MII) || (CONFIG_COMMANDS & CFG_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
+#ifdef MII_DEBUG
+#define debug(fmt,args...) printf (fmt ,##args)
+#else
+#define debug(fmt,args...)
+#endif /* MII_DEBUG */
+
+struct mii_dev {
+ struct list_head link;
+ char *name;
+ int (* read)(char *devname, unsigned char addr,
+ unsigned char reg, unsigned short *value);
+ int (* write)(char *devname, unsigned char addr,
+ unsigned char reg, unsigned short value);
+};
+
+static struct list_head mii_devs;
+static struct mii_dev *current_mii;
+
+/*****************************************************************************
+ *
+ * Initialize global data. Need to be called before any other miiphy routine.
+ */
+void miiphy_init()
+{
+ 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,
+ unsigned char reg, unsigned short *value),
+ int (* write)(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;
+
+ /* 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;
+ }
+ }
+
+ /* allocate memory */
+ name_len = strlen(name);
+ new_dev = (struct mii_dev *)malloc(sizeof(struct mii_dev) + name_len + 1);
+
+ if(new_dev == NULL) {
+ printf("miiphy_register: cannot allocate memory for '%s'\n",
+ name);
+ return;
+ }
+ memset(new_dev, 0, sizeof(struct mii_dev) + name_len);
+
+ /* initalize mii_dev struct fields */
+ 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';
+
+ debug("miiphy_register: added '%s', read=0x%08lx, write=0x%08lx\n",
+ new_dev->name, new_dev->read, new_dev->write);
+
+ /* add it to the list */
+ list_add_tail(&new_dev->link, &mii_devs);
+
+ if (!current_mii)
+ current_mii = new_dev;
+}
+
+int miiphy_set_current_dev(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;
+ }
+ }
+
+ printf("No such device: %s\n", devname);
+ return 1;
+}
+
+char *miiphy_get_current_dev()
+{
+ if (current_mii)
+ return current_mii->name;
+
+ return NULL;
+}
+
+/*****************************************************************************
+ *
+ * Read to variable <value> from the PHY attached to device <devname>,
+ * use PHY address <addr> and register <reg>.
+ *
+ * Returns:
+ * 0 on success
+ */
+int miiphy_read(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);
+
+ 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);
+}
+
+/*****************************************************************************
+ *
+ * Write <value> to the PHY attached to device <devname>,
+ * use PHY address <addr> and register <reg>.
+ *
+ * Returns:
+ * 0 on success
+ */
+int miiphy_write(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);
+
+ return ((found_dev) ? write_ret : 1);
+}
+
+/*****************************************************************************
+ *
+ * Print out list of registered MII capable devices.
+ */
+void miiphy_listdev(void)
+{
+ struct list_head *entry;
+ struct mii_dev *dev;
+
+ puts("MII devices: ");
+ list_for_each(entry, &mii_devs) {
+ dev = list_entry(entry, struct mii_dev, link);
+ printf("'%s' ", dev->name);
+ }
+ puts("\n");
+
+ if (current_mii)
+ printf("Current device: '%s'\n", current_mii->name);
+}
+
/*****************************************************************************
*
@@ -42,14 +254,15 @@
* Returns:
* 0 on success
*/
-int miiphy_info (unsigned char addr,
+int miiphy_info (char *devname,
+ unsigned char addr,
unsigned int *oui,
unsigned char *model, unsigned char *rev)
{
unsigned int reg = 0;
unsigned short tmp;
- if (miiphy_read (addr, PHY_PHYIDR2, &tmp) != 0) {
+ if (miiphy_read (devname, addr, PHY_PHYIDR2, &tmp) != 0) {
#ifdef DEBUG
puts ("PHY ID register 2 read failed\n");
#endif
@@ -65,7 +278,7 @@ int miiphy_info (unsigned char addr,
return (-1);
}
- if (miiphy_read (addr, PHY_PHYIDR1, &tmp) != 0) {
+ if (miiphy_read (devname, addr, PHY_PHYIDR1, &tmp) != 0) {
#ifdef DEBUG
puts ("PHY ID register 1 read failed\n");
#endif
@@ -88,18 +301,18 @@ int miiphy_info (unsigned char addr,
* Returns:
* 0 on success
*/
-int miiphy_reset (unsigned char addr)
+int miiphy_reset (char *devname, unsigned char addr)
{
unsigned short reg;
int loop_cnt;
- if (miiphy_read (addr, PHY_BMCR, &reg) != 0) {
+ if (miiphy_read (devname, addr, PHY_BMCR, &reg) != 0) {
#ifdef DEBUG
printf ("PHY status read failed\n");
#endif
return (-1);
}
- if (miiphy_write (addr, PHY_BMCR, reg | 0x8000) != 0) {
+ if (miiphy_write (devname, addr, PHY_BMCR, reg | 0x8000) != 0) {
#ifdef DEBUG
puts ("PHY reset failed\n");
#endif
@@ -116,7 +329,7 @@ int miiphy_reset (unsigned char addr)
loop_cnt = 0;
reg = 0x8000;
while (((reg & 0x8000) != 0) && (loop_cnt++ < 1000000)) {
- if (miiphy_read (addr, PHY_BMCR, &reg) != 0) {
+ if (miiphy_read (devname, addr, PHY_BMCR, &reg) != 0) {
# ifdef DEBUG
puts ("PHY status read failed\n");
# endif
@@ -137,12 +350,12 @@ int miiphy_reset (unsigned char addr)
*
* Determine the ethernet speed (10/100).
*/
-int miiphy_speed (unsigned char addr)
+int miiphy_speed (char *devname, unsigned char addr)
{
unsigned short reg;
#if defined(CONFIG_PHY_GIGE)
- if (miiphy_read (addr, PHY_1000BTSR, &reg)) {
+ if (miiphy_read (devname, addr, PHY_1000BTSR, &reg)) {
printf ("PHY 1000BT Status read failed\n");
} else {
if (reg != 0xFFFF) {
@@ -154,14 +367,14 @@ int miiphy_speed (unsigned char addr)
#endif /* CONFIG_PHY_GIGE */
/* Check Basic Management Control Register first. */
- if (miiphy_read (addr, PHY_BMCR, &reg)) {
+ if (miiphy_read (devname, addr, PHY_BMCR, &reg)) {
puts ("PHY speed read failed, assuming 10bT\n");
return (_10BASET);
}
/* Check if auto-negotiation is on. */
if ((reg & PHY_BMCR_AUTON) != 0) {
/* Get auto-negotiation results. */
- if (miiphy_read (addr, PHY_ANLPAR, &reg)) {
+ if (miiphy_read (devname, addr, PHY_ANLPAR, &reg)) {
puts ("PHY AN speed read failed, assuming 10bT\n");
return (_10BASET);
}
@@ -185,12 +398,12 @@ int miiphy_speed (unsigned char addr)
*
* Determine full/half duplex.
*/
-int miiphy_duplex (unsigned char addr)
+int miiphy_duplex (char *devname, unsigned char addr)
{
unsigned short reg;
#if defined(CONFIG_PHY_GIGE)
- if (miiphy_read (addr, PHY_1000BTSR, &reg)) {
+ if (miiphy_read (devname, addr, PHY_1000BTSR, &reg)) {
printf ("PHY 1000BT Status read failed\n");
} else {
if ( (reg != 0xFFFF) &&
@@ -205,14 +418,14 @@ int miiphy_duplex (unsigned char addr)
#endif /* CONFIG_PHY_GIGE */
/* Check Basic Management Control Register first. */
- if (miiphy_read (addr, PHY_BMCR, &reg)) {
+ if (miiphy_read (devname, addr, PHY_BMCR, &reg)) {
puts ("PHY duplex read failed, assuming half duplex\n");
return (HALF);
}
/* Check if auto-negotiation is on. */
if ((reg & PHY_BMCR_AUTON) != 0) {
/* Get auto-negotiation results. */
- if (miiphy_read (addr, PHY_ANLPAR, &reg)) {
+ if (miiphy_read (devname, addr, PHY_ANLPAR, &reg)) {
puts ("PHY AN duplex read failed, assuming half duplex\n");
return (HALF);
}
@@ -237,13 +450,13 @@ int miiphy_duplex (unsigned char addr)
*
* Determine link status
*/
-int miiphy_link (unsigned char addr)
+int miiphy_link (char *devname, unsigned char addr)
{
unsigned short reg;
/* dummy read; needed to latch some phys */
- (void)miiphy_read(addr, PHY_BMSR, &reg);
- if (miiphy_read (addr, PHY_BMSR, &reg)) {
+ (void)miiphy_read(devname, addr, PHY_BMSR, &reg);
+ if (miiphy_read (devname, addr, PHY_BMSR, &reg)) {
puts ("PHY_BMSR read failed, assuming no link\n");
return (0);
}
generated by cgit v1.1 at 2024-12-13 09:03:40 +0000