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
53 void mii_ethtool_gset(struct mii_if_info *mii, struct ethtool_cmd *ecmd)  in mii_ethtool_gset()  argument
55 	struct net_device *dev = mii->dev;  in mii_ethtool_gset()
63 	if (mii->supports_gmii)  in mii_ethtool_gset()
74 	ecmd->phy_address = mii->phy_id;  in mii_ethtool_gset()
79 	bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR);  in mii_ethtool_gset()
80 	bmsr = mii->mdio_read(dev, mii->phy_id, MII_BMSR);  in mii_ethtool_gset()
81 	if (mii->supports_gmii) {  in mii_ethtool_gset()
82 		ctrl1000 = mii->mdio_read(dev, mii->phy_id, MII_CTRL1000);  in mii_ethtool_gset()
83 		stat1000 = mii->mdio_read(dev, mii->phy_id, MII_STAT1000);  in mii_ethtool_gset()
86 	ecmd->advertising |= mii_get_an(mii, MII_ADVERTISE);  in mii_ethtool_gset()
87 	if (mii->supports_gmii)  in mii_ethtool_gset()
96 			ecmd->lp_advertising = mii_get_an(mii, MII_LPA);  in mii_ethtool_gset()
129 	mii->full_duplex = ecmd->duplex;  in mii_ethtool_gset()
136  * @mii: MII interface
142 void mii_ethtool_get_link_ksettings(struct mii_if_info *mii,  in mii_ethtool_get_link_ksettings()  argument
145 	struct net_device *dev = mii->dev;  in mii_ethtool_get_link_ksettings()
152 	if (mii->supports_gmii)  in mii_ethtool_get_link_ksettings()
160 	cmd->base.phy_address = mii->phy_id;  in mii_ethtool_get_link_ksettings()
165 	bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR);  in mii_ethtool_get_link_ksettings()
166 	bmsr = mii->mdio_read(dev, mii->phy_id, MII_BMSR);  in mii_ethtool_get_link_ksettings()
167 	if (mii->supports_gmii) {  in mii_ethtool_get_link_ksettings()
168 		ctrl1000 = mii->mdio_read(dev, mii->phy_id, MII_CTRL1000);  in mii_ethtool_get_link_ksettings()
169 		stat1000 = mii->mdio_read(dev, mii->phy_id, MII_STAT1000);  in mii_ethtool_get_link_ksettings()
172 	advertising |= mii_get_an(mii, MII_ADVERTISE);  in mii_ethtool_get_link_ksettings()
173 	if (mii->supports_gmii)  in mii_ethtool_get_link_ksettings()
181 			lp_advertising = mii_get_an(mii, MII_LPA);  in mii_ethtool_get_link_ksettings()
219 	mii->full_duplex = cmd->base.duplex;  in mii_ethtool_get_link_ksettings()
233  * @mii: MII interface
238 int mii_ethtool_sset(struct mii_if_info *mii, struct ethtool_cmd *ecmd)  in mii_ethtool_sset()  argument
240 	struct net_device *dev = mii->dev;  in mii_ethtool_sset()
253 	if (ecmd->phy_address != mii->phy_id)  in mii_ethtool_sset()
257 	if ((speed == SPEED_1000) && (!mii->supports_gmii))  in mii_ethtool_sset()
275 		advert = mii->mdio_read(dev, mii->phy_id, MII_ADVERTISE);  in mii_ethtool_sset()
277 		if (mii->supports_gmii) {  in mii_ethtool_sset()
278 			advert2 = mii->mdio_read(dev, mii->phy_id, MII_CTRL1000);  in mii_ethtool_sset()
283 		if (mii->supports_gmii)  in mii_ethtool_sset()
287 			mii->mdio_write(dev, mii->phy_id, MII_ADVERTISE, tmp);  in mii_ethtool_sset()
288 			mii->advertising = tmp;  in mii_ethtool_sset()
290 		if ((mii->supports_gmii) && (advert2 != tmp2))  in mii_ethtool_sset()
291 			mii->mdio_write(dev, mii->phy_id, MII_CTRL1000, tmp2);  in mii_ethtool_sset()
294 		bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR);  in mii_ethtool_sset()
296 		mii->mdio_write(dev, mii->phy_id, MII_BMCR, bmcr);  in mii_ethtool_sset()
298 		mii->force_media = 0;  in mii_ethtool_sset()
303 		bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR);  in mii_ethtool_sset()
312 			mii->full_duplex = 1;  in mii_ethtool_sset()
314 			mii->full_duplex = 0;  in mii_ethtool_sset()
316 			mii->mdio_write(dev, mii->phy_id, MII_BMCR, tmp);  in mii_ethtool_sset()
318 		mii->force_media = 1;  in mii_ethtool_sset()
325  * @mii: MII interfaces
330 int mii_ethtool_set_link_ksettings(struct mii_if_info *mii,  in mii_ethtool_set_link_ksettings()  argument
333 	struct net_device *dev = mii->dev;  in mii_ethtool_set_link_ksettings()
344 	if (cmd->base.phy_address != mii->phy_id)  in mii_ethtool_set_link_ksettings()
349 	if ((speed == SPEED_1000) && (!mii->supports_gmii))  in mii_ethtool_set_link_ksettings()
371 		advert = mii->mdio_read(dev, mii->phy_id, MII_ADVERTISE);  in mii_ethtool_set_link_ksettings()
373 		if (mii->supports_gmii) {  in mii_ethtool_set_link_ksettings()
374 			advert2 = mii->mdio_read(dev, mii->phy_id,  in mii_ethtool_set_link_ksettings()
381 		if (mii->supports_gmii)  in mii_ethtool_set_link_ksettings()
384 			mii->mdio_write(dev, mii->phy_id, MII_ADVERTISE, tmp);  in mii_ethtool_set_link_ksettings()
385 			mii->advertising = tmp;  in mii_ethtool_set_link_ksettings()
387 		if ((mii->supports_gmii) && (advert2 != tmp2))  in mii_ethtool_set_link_ksettings()
388 			mii->mdio_write(dev, mii->phy_id, MII_CTRL1000, tmp2);  in mii_ethtool_set_link_ksettings()
391 		bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR);  in mii_ethtool_set_link_ksettings()
393 		mii->mdio_write(dev, mii->phy_id, MII_BMCR, bmcr);  in mii_ethtool_set_link_ksettings()
395 		mii->force_media = 0;  in mii_ethtool_set_link_ksettings()
400 		bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR);  in mii_ethtool_set_link_ksettings()
409 			mii->full_duplex = 1;  in mii_ethtool_set_link_ksettings()
411 			mii->full_duplex = 0;  in mii_ethtool_set_link_ksettings()
414 			mii->mdio_write(dev, mii->phy_id, MII_BMCR, tmp);  in mii_ethtool_set_link_ksettings()
416 		mii->force_media = 1;  in mii_ethtool_set_link_ksettings()
422  * mii_check_gmii_support - check if the MII supports Gb interfaces
423  * @mii: the MII interface
425 int mii_check_gmii_support(struct mii_if_info *mii)  in mii_check_gmii_support()  argument
429 	reg = mii->mdio_read(mii->dev, mii->phy_id, MII_BMSR);  in mii_check_gmii_support()
431 		reg = mii->mdio_read(mii->dev, mii->phy_id, MII_ESTATUS);  in mii_check_gmii_support()
441  * @mii: the MII interface
443  * Returns 1 if the MII reports link status up/ok, 0 otherwise.
445 int mii_link_ok (struct mii_if_info *mii)  in mii_link_ok()  argument
447 	/* first, a dummy read, needed to latch some MII phys */  in mii_link_ok()
448 	mii->mdio_read(mii->dev, mii->phy_id, MII_BMSR);  in mii_link_ok()
449 	if (mii->mdio_read(mii->dev, mii->phy_id, MII_BMSR) & BMSR_LSTATUS)  in mii_link_ok()
456  * @mii: the MII interface
460 int mii_nway_restart (struct mii_if_info *mii)  in mii_nway_restart()  argument
466 	bmcr = mii->mdio_read(mii->dev, mii->phy_id, MII_BMCR);  in mii_nway_restart()
470 		mii->mdio_write(mii->dev, mii->phy_id, MII_BMCR, bmcr);  in mii_nway_restart()
478  * mii_check_link - check MII link status
479  * @mii: MII interface
485 void mii_check_link (struct mii_if_info *mii)  in mii_check_link()  argument
487 	int cur_link = mii_link_ok(mii);  in mii_check_link()
488 	int prev_link = netif_carrier_ok(mii->dev);  in mii_check_link()
491 		netif_carrier_on(mii->dev);  in mii_check_link()
493 		netif_carrier_off(mii->dev);  in mii_check_link()
497  * mii_check_media - check the MII interface for a carrier/speed/duplex change
498  * @mii: the MII interface
500  * @init_media: OK to save duplex mode in @mii
505 unsigned int mii_check_media (struct mii_if_info *mii,  in mii_check_media()  argument
514 	old_carrier = netif_carrier_ok(mii->dev) ? 1 : 0;  in mii_check_media()
515 	new_carrier = (unsigned int) mii_link_ok(mii);  in mii_check_media()
525 		netif_carrier_off(mii->dev);  in mii_check_media()
527 			netdev_info(mii->dev, "link down\n");  in mii_check_media()
534 	netif_carrier_on(mii->dev);  in mii_check_media()
536 	if (mii->force_media) {  in mii_check_media()
538 			netdev_info(mii->dev, "link up\n");  in mii_check_media()
542 	/* get MII advertise and LPA values */  in mii_check_media()
543 	if ((!init_media) && (mii->advertising))  in mii_check_media()
544 		advertise = mii->advertising;  in mii_check_media()
546 		advertise = mii->mdio_read(mii->dev, mii->phy_id, MII_ADVERTISE);  in mii_check_media()
547 		mii->advertising = advertise;  in mii_check_media()
549 	lpa = mii->mdio_read(mii->dev, mii->phy_id, MII_LPA);  in mii_check_media()
550 	if (mii->supports_gmii)  in mii_check_media()
551 		lpa2 = mii->mdio_read(mii->dev, mii->phy_id, MII_STAT1000);  in mii_check_media()
560 		netdev_info(mii->dev, "link up, %uMbps, %s-duplex, lpa 0x%04X\n",  in mii_check_media()
567 	if ((init_media) || (mii->full_duplex != duplex)) {  in mii_check_media()
568 		mii->full_duplex = duplex;  in mii_check_media()
576  * generic_mii_ioctl - main MII ioctl interface
577  * @mii_if: the MII interface
578  * @mii_data: MII ioctl data structure
579  * @cmd: MII ioctl command
655 MODULE_DESCRIPTION ("MII hardware support library");