diff options
Diffstat (limited to 'common/miiphyutil.c')
| -rw-r--r-- | common/miiphyutil.c | 155 |
1 files changed, 75 insertions, 80 deletions
diff --git a/common/miiphyutil.c b/common/miiphyutil.c index 4b186dd..9cf845f 100644 --- a/common/miiphyutil.c +++ b/common/miiphyutil.c @@ -46,21 +46,45 @@ 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; @@ -70,25 +94,21 @@ void miiphy_init () * * 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 */ @@ -107,9 +127,9 @@ void miiphy_register (char *name, 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); @@ -121,25 +141,20 @@ void miiphy_register (char *name, 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; @@ -147,6 +162,20 @@ char *miiphy_get_current_dev () 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>, @@ -155,33 +184,16 @@ char *miiphy_get_current_dev () * 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; } /***************************************************************************** @@ -192,33 +204,16 @@ int miiphy_read (char *devname, unsigned char addr, unsigned char reg, * 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; } /***************************************************************************** @@ -252,7 +247,7 @@ void miiphy_listdev (void) * 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; @@ -290,7 +285,7 @@ int miiphy_info (char *devname, unsigned char addr, unsigned int *oui, * 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 timeout = 500; @@ -332,7 +327,7 @@ int miiphy_reset (char *devname, unsigned char addr) * * 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; @@ -386,7 +381,7 @@ miiphy_read_failed: * * 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; @@ -446,7 +441,7 @@ miiphy_read_failed: * 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; @@ -467,7 +462,7 @@ int miiphy_is_1000base_x (char *devname, unsigned char addr) * * Determine link status */ -int miiphy_link (char *devname, unsigned char addr) +int miiphy_link(const char *devname, unsigned char addr) { unsigned short reg; |