3 	mii.c: MII interface library
34 #include <linux/mii.h>
36 static u32 mii_get_an(struct mii_if_info *mii, u16 addr)  in mii_get_an()  argument
40 	advert = mii->mdio_read(mii->dev, mii->phy_id, addr);  in mii_get_an()
47  * @mii: MII interface
55 int mii_ethtool_gset(struct mii_if_info *mii, struct ethtool_cmd *ecmd)  in mii_ethtool_gset()  argument
57 	struct net_device *dev = mii->dev;  in mii_ethtool_gset()
65 	if (mii->supports_gmii)  in mii_ethtool_gset()
76 	ecmd->phy_address = mii->phy_id;  in mii_ethtool_gset()
81 	bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR);  in mii_ethtool_gset()
82 	bmsr = mii->mdio_read(dev, mii->phy_id, MII_BMSR);  in mii_ethtool_gset()
83 	if (mii->supports_gmii) {  in mii_ethtool_gset()
84  		ctrl1000 = mii->mdio_read(dev, mii->phy_id, MII_CTRL1000);  in mii_ethtool_gset()
85 		stat1000 = mii->mdio_read(dev, mii->phy_id, MII_STAT1000);  in mii_ethtool_gset()
91 		ecmd->advertising |= mii_get_an(mii, MII_ADVERTISE);  in mii_ethtool_gset()
92 		if (mii->supports_gmii)  in mii_ethtool_gset()
97 			ecmd->lp_advertising = mii_get_an(mii, MII_LPA);  in mii_ethtool_gset()
130 	mii->full_duplex = ecmd->duplex;  in mii_ethtool_gset()
139  * @mii: MII interface
145 void mii_ethtool_get_link_ksettings(struct mii_if_info *mii,  in mii_ethtool_get_link_ksettings()  argument
148 	struct net_device *dev = mii->dev;  in mii_ethtool_get_link_ksettings()
155 	if (mii->supports_gmii)  in mii_ethtool_get_link_ksettings()
163 	cmd->base.phy_address = mii->phy_id;  in mii_ethtool_get_link_ksettings()
168 	bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR);  in mii_ethtool_get_link_ksettings()
169 	bmsr = mii->mdio_read(dev, mii->phy_id, MII_BMSR);  in mii_ethtool_get_link_ksettings()
170 	if (mii->supports_gmii) {  in mii_ethtool_get_link_ksettings()
171 		ctrl1000 = mii->mdio_read(dev, mii->phy_id, MII_CTRL1000);  in mii_ethtool_get_link_ksettings()
172 		stat1000 = mii->mdio_read(dev, mii->phy_id, MII_STAT1000);  in mii_ethtool_get_link_ksettings()
178 		advertising |= mii_get_an(mii, MII_ADVERTISE);  in mii_ethtool_get_link_ksettings()
179 		if (mii->supports_gmii)  in mii_ethtool_get_link_ksettings()
183 			lp_advertising = mii_get_an(mii, MII_LPA);  in mii_ethtool_get_link_ksettings()
218 	mii->full_duplex = cmd->base.duplex;  in mii_ethtool_get_link_ksettings()
232  * @mii: MII interface
237 int mii_ethtool_sset(struct mii_if_info *mii, struct ethtool_cmd *ecmd)  in mii_ethtool_sset()  argument
239 	struct net_device *dev = mii->dev;  in mii_ethtool_sset()
252 	if (ecmd->phy_address != mii->phy_id)  in mii_ethtool_sset()
256 	if ((speed == SPEED_1000) && (!mii->supports_gmii))  in mii_ethtool_sset()
274 		advert = mii->mdio_read(dev, mii->phy_id, MII_ADVERTISE);  in mii_ethtool_sset()
276 		if (mii->supports_gmii) {  in mii_ethtool_sset()
277 			advert2 = mii->mdio_read(dev, mii->phy_id, MII_CTRL1000);  in mii_ethtool_sset()
282 		if (mii->supports_gmii)  in mii_ethtool_sset()
286 			mii->mdio_write(dev, mii->phy_id, MII_ADVERTISE, tmp);  in mii_ethtool_sset()
287 			mii->advertising = tmp;  in mii_ethtool_sset()
289 		if ((mii->supports_gmii) && (advert2 != tmp2))  in mii_ethtool_sset()
290 			mii->mdio_write(dev, mii->phy_id, MII_CTRL1000, tmp2);  in mii_ethtool_sset()
293 		bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR);  in mii_ethtool_sset()
295 		mii->mdio_write(dev, mii->phy_id, MII_BMCR, bmcr);  in mii_ethtool_sset()
297 		mii->force_media = 0;  in mii_ethtool_sset()
302 		bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR);  in mii_ethtool_sset()
311 			mii->full_duplex = 1;  in mii_ethtool_sset()
313 			mii->full_duplex = 0;  in mii_ethtool_sset()
315 			mii->mdio_write(dev, mii->phy_id, MII_BMCR, tmp);  in mii_ethtool_sset()
317 		mii->force_media = 1;  in mii_ethtool_sset()
324  * @mii: MII interfaces
329 int mii_ethtool_set_link_ksettings(struct mii_if_info *mii,  in mii_ethtool_set_link_ksettings()  argument
332 	struct net_device *dev = mii->dev;  in mii_ethtool_set_link_ksettings()
343 	if (cmd->base.phy_address != mii->phy_id)  in mii_ethtool_set_link_ksettings()
348 	if ((speed == SPEED_1000) && (!mii->supports_gmii))  in mii_ethtool_set_link_ksettings()
370 		advert = mii->mdio_read(dev, mii->phy_id, MII_ADVERTISE);  in mii_ethtool_set_link_ksettings()
372 		if (mii->supports_gmii) {  in mii_ethtool_set_link_ksettings()
373 			advert2 = mii->mdio_read(dev, mii->phy_id,  in mii_ethtool_set_link_ksettings()
380 		if (mii->supports_gmii)  in mii_ethtool_set_link_ksettings()
383 			mii->mdio_write(dev, mii->phy_id, MII_ADVERTISE, tmp);  in mii_ethtool_set_link_ksettings()
384 			mii->advertising = tmp;  in mii_ethtool_set_link_ksettings()
386 		if ((mii->supports_gmii) && (advert2 != tmp2))  in mii_ethtool_set_link_ksettings()
387 			mii->mdio_write(dev, mii->phy_id, MII_CTRL1000, tmp2);  in mii_ethtool_set_link_ksettings()
390 		bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR);  in mii_ethtool_set_link_ksettings()
392 		mii->mdio_write(dev, mii->phy_id, MII_BMCR, bmcr);  in mii_ethtool_set_link_ksettings()
394 		mii->force_media = 0;  in mii_ethtool_set_link_ksettings()
399 		bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR);  in mii_ethtool_set_link_ksettings()
408 			mii->full_duplex = 1;  in mii_ethtool_set_link_ksettings()
410 			mii->full_duplex = 0;  in mii_ethtool_set_link_ksettings()
413 			mii->mdio_write(dev, mii->phy_id, MII_BMCR, tmp);  in mii_ethtool_set_link_ksettings()
415 		mii->force_media = 1;  in mii_ethtool_set_link_ksettings()
421  * mii_check_gmii_support - check if the MII supports Gb interfaces
422  * @mii: the MII interface
424 int mii_check_gmii_support(struct mii_if_info *mii)  in mii_check_gmii_support()  argument
428 	reg = mii->mdio_read(mii->dev, mii->phy_id, MII_BMSR);  in mii_check_gmii_support()
430 		reg = mii->mdio_read(mii->dev, mii->phy_id, MII_ESTATUS);  in mii_check_gmii_support()
440  * @mii: the MII interface
442  * Returns 1 if the MII reports link status up/ok, 0 otherwise.
444 int mii_link_ok (struct mii_if_info *mii)  in mii_link_ok()  argument
446 	/* first, a dummy read, needed to latch some MII phys */  in mii_link_ok()
447 	mii->mdio_read(mii->dev, mii->phy_id, MII_BMSR);  in mii_link_ok()
448 	if (mii->mdio_read(mii->dev, mii->phy_id, MII_BMSR) & BMSR_LSTATUS)  in mii_link_ok()
455  * @mii: the MII interface
459 int mii_nway_restart (struct mii_if_info *mii)  in mii_nway_restart()  argument
465 	bmcr = mii->mdio_read(mii->dev, mii->phy_id, MII_BMCR);  in mii_nway_restart()
469 		mii->mdio_write(mii->dev, mii->phy_id, MII_BMCR, bmcr);  in mii_nway_restart()
477  * mii_check_link - check MII link status
478  * @mii: MII interface
484 void mii_check_link (struct mii_if_info *mii)  in mii_check_link()  argument
486 	int cur_link = mii_link_ok(mii);  in mii_check_link()
487 	int prev_link = netif_carrier_ok(mii->dev);  in mii_check_link()
490 		netif_carrier_on(mii->dev);  in mii_check_link()
492 		netif_carrier_off(mii->dev);  in mii_check_link()
496  * mii_check_media - check the MII interface for a carrier/speed/duplex change
497  * @mii: the MII interface
499  * @init_media: OK to save duplex mode in @mii
504 unsigned int mii_check_media (struct mii_if_info *mii,  in mii_check_media()  argument
513 	old_carrier = netif_carrier_ok(mii->dev) ? 1 : 0;  in mii_check_media()
514 	new_carrier = (unsigned int) mii_link_ok(mii);  in mii_check_media()
524 		netif_carrier_off(mii->dev);  in mii_check_media()
526 			netdev_info(mii->dev, "link down\n");  in mii_check_media()
533 	netif_carrier_on(mii->dev);  in mii_check_media()
535 	if (mii->force_media) {  in mii_check_media()
537 			netdev_info(mii->dev, "link up\n");  in mii_check_media()
541 	/* get MII advertise and LPA values */  in mii_check_media()
542 	if ((!init_media) && (mii->advertising))  in mii_check_media()
543 		advertise = mii->advertising;  in mii_check_media()
545 		advertise = mii->mdio_read(mii->dev, mii->phy_id, MII_ADVERTISE);  in mii_check_media()
546 		mii->advertising = advertise;  in mii_check_media()
548 	lpa = mii->mdio_read(mii->dev, mii->phy_id, MII_LPA);  in mii_check_media()
549 	if (mii->supports_gmii)  in mii_check_media()
550 		lpa2 = mii->mdio_read(mii->dev, mii->phy_id, MII_STAT1000);  in mii_check_media()
559 		netdev_info(mii->dev, "link up, %uMbps, %s-duplex, lpa 0x%04X\n",  in mii_check_media()
566 	if ((init_media) || (mii->full_duplex != duplex)) {  in mii_check_media()
567 		mii->full_duplex = duplex;  in mii_check_media()
575  * generic_mii_ioctl - main MII ioctl interface
576  * @mii_if: the MII interface
577  * @mii_data: MII ioctl data structure
578  * @cmd: MII ioctl command
654 MODULE_DESCRIPTION ("MII hardware support library");