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);
-
- 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);
+ dev = miiphy_get_active_dev(devname);
+ if (dev)
+ return dev->read(devname, addr, reg, value);
- 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;
* 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) {
debug ("PHY status read failed\n");
* 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) {
- debug ("PHY status read failed\n");
- 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 (10/100/1000). Return 10 on error.
*/
-int miiphy_speed (char *devname, unsigned char addr)
+int miiphy_speed(const char *devname, unsigned char addr)
{
u16 bmcr, anlpar;
/* Get speed from basic control settings. */
return (bmcr & PHY_BMCR_100MB) ? _100BASET : _10BASET;
- miiphy_read_failed:
+miiphy_read_failed:
printf (" read failed, assuming 10BASE-T\n");
return _10BASET;
}
*
* 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)
{
u16 bmcr, anlpar;
/* Get speed from basic control settings. */
return (bmcr & PHY_BMCR_DPLX) ? FULL : HALF;
- miiphy_read_failed:
+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 (char *devname, unsigned char addr)
+int miiphy_is_1000base_x(const char *devname, unsigned char addr)
{
#if defined(CONFIG_PHY_GIGE)
u16 exsr;
*
* Determine link status
*/
-int miiphy_link (char *devname, unsigned char addr)
+int miiphy_link(const char *devname, unsigned char addr)
{
unsigned short reg;
projects / karo-tx-uboot.git / blobdiff