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phy: Add API for {un}registering an mdio device to a bus. 

Rather than have drivers directly manipulate the mii_bus structure,
provide and API for registering and unregistering devices on an MDIO
bus, and performing lookups.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andrew Lunn 2016-01-06 20:11:18 +01:00 committed by David S. Miller
parent 801a8ef54e
commit 7f854420fb
17 changed files with 98 additions and 49 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/net/ethernet/amd/au1000_eth.c
View File

@ -502,7 +502,7 @@ static int au1000_mii_probe(struct net_device *dev)
BUG_ON(aup->mac_id < 0 || aup->mac_id > 1);
if (aup->phy_addr)
phydev = aup->mii_bus->phy_map[aup->phy_addr];
phydev = mdiobus_get_phy(aup->mii_bus, aup->phy_addr);
else
netdev_info(dev, "using PHY-less setup\n");
return 0;
@ -512,8 +512,8 @@ static int au1000_mii_probe(struct net_device *dev)
* on the current MAC's MII bus
*/
for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++)
if (aup->mii_bus->phy_map[phy_addr]) {
phydev = aup->mii_bus->phy_map[phy_addr];
if (mdiobus_get_phy(aup->mii_bus, aup->phy_addr)) {
phydev = mdiobus_get_phy(aup->mii_bus, aup->phy_addr);
if (!aup->phy_search_highest_addr)
/* break out with first one found */
break;
@ -531,7 +531,8 @@ static int au1000_mii_probe(struct net_device *dev)
*/
for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) {
struct phy_device *const tmp_phydev =
aup->mii_bus->phy_map[phy_addr];
mdiobus_get_phy(aup->mii_bus,
phy_addr);
if (aup->mac_id == 1)
break;

2
drivers/net/ethernet/broadcom/b44.c
View File

@ -2272,7 +2272,7 @@ static int b44_register_phy_one(struct b44 *bp)
goto err_out_mdiobus;
}
if (!bp->mii_bus->phy_map[bp->phy_addr] &&
if (!mdiobus_is_registered_device(bp->mii_bus, bp->phy_addr) &&
(sprom->boardflags_lo & (B44_BOARDFLAG_ROBO | B44_BOARDFLAG_ADM))) {
dev_info(sdev->dev,

2
drivers/net/ethernet/broadcom/genet/bcmmii.c
View File

@ -573,7 +573,7 @@ static int bcmgenet_mii_pd_init(struct bcmgenet_priv *priv)
}
if (pd->phy_address >= 0 && pd->phy_address < PHY_MAX_ADDR)
phydev = mdio->phy_map[pd->phy_address];
phydev = mdiobus_get_phy(mdio, pd->phy_address);
else
phydev = phy_find_first(mdio);

30
drivers/net/ethernet/broadcom/tg3.c
View File

@ -1406,7 +1406,7 @@ static void tg3_mdio_config_5785(struct tg3 *tp)
u32 val;
struct phy_device *phydev;
phydev = tp->mdio_bus->phy_map[tp->phy_addr];
phydev = mdiobus_get_phy(tp->mdio_bus, tp->phy_addr);
switch (phydev->drv->phy_id & phydev->drv->phy_id_mask) {
case PHY_ID_BCM50610:
case PHY_ID_BCM50610M:
@ -1554,7 +1554,7 @@ static int tg3_mdio_init(struct tg3 *tp)
return i;
}
phydev = tp->mdio_bus->phy_map[tp->phy_addr];
phydev = mdiobus_get_phy(tp->mdio_bus, tp->phy_addr);
if (!phydev || !phydev->drv) {
dev_warn(&tp->pdev->dev, "No PHY devices\n");
@ -1964,7 +1964,7 @@ static void tg3_setup_flow_control(struct tg3 *tp, u32 lcladv, u32 rmtadv)
u32 old_tx_mode = tp->tx_mode;
if (tg3_flag(tp, USE_PHYLIB))
autoneg = tp->mdio_bus->phy_map[tp->phy_addr]->autoneg;
autoneg = mdiobus_get_phy(tp->mdio_bus, tp->phy_addr)->autoneg;
else
autoneg = tp->link_config.autoneg;
@ -2000,7 +2000,7 @@ static void tg3_adjust_link(struct net_device *dev)
u8 oldflowctrl, linkmesg = 0;
u32 mac_mode, lcl_adv, rmt_adv;
struct tg3 *tp = netdev_priv(dev);
struct phy_device *phydev = tp->mdio_bus->phy_map[tp->phy_addr];
struct phy_device *phydev = mdiobus_get_phy(tp->mdio_bus, tp->phy_addr);
spin_lock_bh(&tp->lock);
@ -2089,7 +2089,7 @@ static int tg3_phy_init(struct tg3 *tp)
/* Bring the PHY back to a known state. */
tg3_bmcr_reset(tp);
phydev = tp->mdio_bus->phy_map[tp->phy_addr];
phydev = mdiobus_get_phy(tp->mdio_bus, tp->phy_addr);
/* Attach the MAC to the PHY. */
phydev = phy_connect(tp->dev, phydev_name(phydev),
@ -2116,7 +2116,7 @@ static int tg3_phy_init(struct tg3 *tp)
SUPPORTED_Asym_Pause);
break;
default:
phy_disconnect(tp->mdio_bus->phy_map[tp->phy_addr]);
phy_disconnect(mdiobus_get_phy(tp->mdio_bus, tp->phy_addr));
return -EINVAL;
}
@ -2136,7 +2136,7 @@ static void tg3_phy_start(struct tg3 *tp)
if (!(tp->phy_flags & TG3_PHYFLG_IS_CONNECTED))
return;
phydev = tp->mdio_bus->phy_map[tp->phy_addr];
phydev = mdiobus_get_phy(tp->mdio_bus, tp->phy_addr);
if (tp->phy_flags & TG3_PHYFLG_IS_LOW_POWER) {
tp->phy_flags &= ~TG3_PHYFLG_IS_LOW_POWER;
@ -2156,13 +2156,13 @@ static void tg3_phy_stop(struct tg3 *tp)
if (!(tp->phy_flags & TG3_PHYFLG_IS_CONNECTED))
return;
phy_stop(tp->mdio_bus->phy_map[tp->phy_addr]);
phy_stop(mdiobus_get_phy(tp->mdio_bus, tp->phy_addr));
}
static void tg3_phy_fini(struct tg3 *tp)
{
if (tp->phy_flags & TG3_PHYFLG_IS_CONNECTED) {
phy_disconnect(tp->mdio_bus->phy_map[tp->phy_addr]);
phy_disconnect(mdiobus_get_phy(tp->mdio_bus, tp->phy_addr));
tp->phy_flags &= ~TG3_PHYFLG_IS_CONNECTED;
}
}
@ -4046,7 +4046,7 @@ static int tg3_power_down_prepare(struct tg3 *tp)
struct phy_device *phydev;
u32 phyid, advertising;
phydev = tp->mdio_bus->phy_map[tp->phy_addr];
phydev = mdiobus_get_phy(tp->mdio_bus, tp->phy_addr);
tp->phy_flags |= TG3_PHYFLG_IS_LOW_POWER;
@ -12074,7 +12074,7 @@ static int tg3_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
struct phy_device *phydev;
if (!(tp->phy_flags & TG3_PHYFLG_IS_CONNECTED))
return -EAGAIN;
phydev = tp->mdio_bus->phy_map[tp->phy_addr];
phydev = mdiobus_get_phy(tp->mdio_bus, tp->phy_addr);
return phy_ethtool_gset(phydev, cmd);
}
@ -12141,7 +12141,7 @@ static int tg3_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
struct phy_device *phydev;
if (!(tp->phy_flags & TG3_PHYFLG_IS_CONNECTED))
return -EAGAIN;
phydev = tp->mdio_bus->phy_map[tp->phy_addr];
phydev = mdiobus_get_phy(tp->mdio_bus, tp->phy_addr);
return phy_ethtool_sset(phydev, cmd);
}
@ -12296,7 +12296,7 @@ static int tg3_nway_reset(struct net_device *dev)
if (tg3_flag(tp, USE_PHYLIB)) {
if (!(tp->phy_flags & TG3_PHYFLG_IS_CONNECTED))
return -EAGAIN;
r = phy_start_aneg(tp->mdio_bus->phy_map[tp->phy_addr]);
r = phy_start_aneg(mdiobus_get_phy(tp->mdio_bus, tp->phy_addr));
} else {
u32 bmcr;
@ -12414,7 +12414,7 @@ static int tg3_set_pauseparam(struct net_device *dev, struct ethtool_pauseparam
u32 newadv;
struct phy_device *phydev;
phydev = tp->mdio_bus->phy_map[tp->phy_addr];
phydev = mdiobus_get_phy(tp->mdio_bus, tp->phy_addr);
if (!(phydev->supported & SUPPORTED_Pause) ||
(!(phydev->supported & SUPPORTED_Asym_Pause) &&
@ -13924,7 +13924,7 @@ static int tg3_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
struct phy_device *phydev;
if (!(tp->phy_flags & TG3_PHYFLG_IS_CONNECTED))
return -EAGAIN;
phydev = tp->mdio_bus->phy_map[tp->phy_addr];
phydev = mdiobus_get_phy(tp->mdio_bus, tp->phy_addr);
return phy_mii_ioctl(phydev, ifr, cmd);
}

4
drivers/net/ethernet/ethoc.c
View File

@ -678,7 +678,7 @@ static int ethoc_mdio_probe(struct net_device *dev)
int err;
if (priv->phy_id != -1)
phy = priv->mdio->phy_map[priv->phy_id];
phy = mdiobus_get_phy(priv->mdio, priv->phy_id);
else
phy = phy_find_first(priv->mdio);
@ -766,7 +766,7 @@ static int ethoc_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
if (mdio->phy_id >= PHY_MAX_ADDR)
return -ERANGE;
phy = priv->mdio->phy_map[mdio->phy_id];
phy = mdiobus_get_phy(priv->mdio, mdio->phy_id);
if (!phy)
return -ENODEV;
} else {

2
drivers/net/ethernet/faraday/ftgmac100.c
View File

@ -839,7 +839,7 @@ static int ftgmac100_mii_probe(struct ftgmac100 *priv)
/* search for connect PHY device */
for (i = 0; i < PHY_MAX_ADDR; i++) {
struct phy_device *tmp = priv->mii_bus->phy_map[i];
struct phy_device *tmp = mdiobus_get_phy(priv->mii_bus, i);
if (tmp) {
phydev = tmp;

7
drivers/net/ethernet/freescale/fec_main.c
View File

@ -48,6 +48,7 @@
#include <linux/irq.h>
#include <linux/clk.h>
#include <linux/platform_device.h>
#include <linux/mdio.h>
#include <linux/phy.h>
#include <linux/fec.h>
#include <linux/of.h>
@ -1926,11 +1927,7 @@ static int fec_enet_mii_probe(struct net_device *ndev)
} else {
/* check for attached phy */
for (phy_id = 0; (phy_id < PHY_MAX_ADDR); phy_id++) {
if ((fep->mii_bus->phy_mask & (1 << phy_id)))
continue;
if (fep->mii_bus->phy_map[phy_id] == NULL)
continue;
if (fep->mii_bus->phy_map[phy_id]->phy_id == 0)
if (!mdiobus_is_registered_device(fep->mii_bus, phy_id))
continue;
if (dev_id--)
continue;

2
drivers/net/ethernet/samsung/sxgbe/sxgbe_mdio.c
View File

@ -180,7 +180,7 @@ int sxgbe_mdio_register(struct net_device *ndev)
}
for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) {
struct phy_device *phy = mdio_bus->phy_map[phy_addr];
struct phy_device *phy = mdiobus_get_phy(mdio_bus, phy_addr);
if (phy) {
char irq_num[4];

3
drivers/net/ethernet/smsc/smsc9420.c
View File

@ -1158,7 +1158,8 @@ static int smsc9420_mii_probe(struct net_device *dev)
BUG_ON(pd->phy_dev);
/* Device only supports internal PHY at address 1 */
if (!pd->mii_bus->phy_map[1]) {
phydev = mdiobus_get_phy(pd->mii_bus, 1);
if (!phydev) {
netdev_err(dev, "no PHY found at address 1\n");
return -ENODEV;
}

2
drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
View File

@ -252,7 +252,7 @@ int stmmac_mdio_register(struct net_device *ndev)
found = 0;
for (addr = 0; addr < PHY_MAX_ADDR; addr++) {
struct phy_device *phydev = new_bus->phy_map[addr];
struct phy_device *phydev = mdiobus_get_phy(new_bus, addr);
if (phydev) {
int act = 0;
char irq_num[4];

2
drivers/net/ethernet/ti/davinci_mdio.c
View File

@ -393,7 +393,7 @@ static int davinci_mdio_probe(struct platform_device *pdev)
/* scan and dump the bus */
for (addr = 0; addr < PHY_MAX_ADDR; addr++) {
phy = data->bus->phy_map[addr];
phy = mdiobus_get_phy(data->bus, addr);
if (phy) {
dev_info(dev, "phy[%d]: device %s, driver %s\n",
phy->mdio.addr, phydev_name(phy),

46
drivers/net/phy/mdio_bus.c
View File

@ -38,6 +38,48 @@
#include <asm/irq.h>
int mdiobus_register_device(struct mdio_device *mdiodev)
{
if (mdiodev->bus->mdio_map[mdiodev->addr])
return -EBUSY;
mdiodev->bus->mdio_map[mdiodev->addr] = mdiodev;
return 0;
}
EXPORT_SYMBOL(mdiobus_register_device);
int mdiobus_unregister_device(struct mdio_device *mdiodev)
{
if (mdiodev->bus->mdio_map[mdiodev->addr] != mdiodev)
return -EINVAL;
mdiodev->bus->mdio_map[mdiodev->addr] = NULL;
return 0;
}
EXPORT_SYMBOL(mdiobus_unregister_device);
struct phy_device *mdiobus_get_phy(struct mii_bus *bus, int addr)
{
struct mdio_device *mdiodev = bus->mdio_map[addr];
if (!mdiodev)
return NULL;
if (!(mdiodev->flags & MDIO_DEVICE_FLAG_PHY))
return NULL;
return container_of(mdiodev, struct phy_device, mdio);
}
EXPORT_SYMBOL(mdiobus_get_phy);
bool mdiobus_is_registered_device(struct mii_bus *bus, int addr)
{
return bus->mdio_map[addr];
}
EXPORT_SYMBOL(mdiobus_is_registered_device);
/**
* mdiobus_alloc_size - allocate a mii_bus structure
* @size: extra amount of memory to allocate for private storage.
@ -299,7 +341,7 @@ int __mdiobus_register(struct mii_bus *bus, struct module *owner)
error:
while (--i >= 0) {
struct phy_device *phydev = bus->phy_map[i];
struct phy_device *phydev = mdiobus_get_phy(bus, i);
if (phydev) {
phy_device_remove(phydev);
phy_device_free(phydev);
@ -318,7 +360,7 @@ void mdiobus_unregister(struct mii_bus *bus)
bus->state = MDIOBUS_UNREGISTERED;
for (i = 0; i < PHY_MAX_ADDR; i++) {
struct phy_device *phydev = bus->phy_map[i];
struct phy_device *phydev = mdiobus_get_phy(bus, i);
if (phydev) {
phy_device_remove(phydev);
phy_device_free(phydev);

21
drivers/net/phy/phy_device.c
View File

@ -166,6 +166,7 @@ struct phy_device *phy_device_create(struct mii_bus *bus, int addr, int phy_id,
mdiodev->dev.bus = &mdio_bus_type;
mdiodev->bus = bus;
mdiodev->addr = addr;
mdiodev->flags = MDIO_DEVICE_FLAG_PHY;
dev->speed = 0;
dev->duplex = -1;
@ -383,10 +384,9 @@ int phy_device_register(struct phy_device *phydev)
{
int err;
/* Don't register a phy if one is already registered at this address */
if (phydev->mdio.bus->phy_map[phydev->mdio.addr])
return -EINVAL;
phydev->mdio.bus->phy_map[phydev->mdio.addr] = phydev;
err = mdiobus_register_device(&phydev->mdio);
if (err)
return err;
/* Run all of the fixups for this PHY */
err = phy_scan_fixups(phydev);
@ -404,7 +404,7 @@ int phy_device_register(struct phy_device *phydev)
return 0;
out:
phydev->mdio.bus->phy_map[phydev->mdio.addr] = NULL;
mdiobus_unregister_device(&phydev->mdio);
return err;
}
EXPORT_SYMBOL(phy_device_register);
@ -419,11 +419,8 @@ EXPORT_SYMBOL(phy_device_register);
*/
void phy_device_remove(struct phy_device *phydev)
{
struct mii_bus *bus = phydev->mdio.bus;
int addr = phydev->mdio.addr;
device_del(&phydev->mdio.dev);
bus->phy_map[addr] = NULL;
mdiobus_unregister_device(&phydev->mdio);
}
EXPORT_SYMBOL(phy_device_remove);
@ -433,11 +430,13 @@ EXPORT_SYMBOL(phy_device_remove);
*/
struct phy_device *phy_find_first(struct mii_bus *bus)
{
struct phy_device *phydev;
int addr;
for (addr = 0; addr < PHY_MAX_ADDR; addr++) {
if (bus->phy_map[addr])
return bus->phy_map[addr];
phydev = mdiobus_get_phy(bus, addr);
if (phydev)
return phydev;
}
return NULL;
}

2
drivers/of/of_mdio.c
View File

@ -193,7 +193,7 @@ int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np)
for (addr = 0; addr < PHY_MAX_ADDR; addr++) {
/* skip already registered PHYs */
if (mdio->phy_map[addr])
if (mdiobus_is_registered_device(mdio, addr))
continue;
/* be noisy to encourage people to set reg property */

8
include/linux/mdio.h
View File

@ -19,9 +19,12 @@ struct mdio_device {
struct mii_bus *bus;
/* Bus address of the MDIO device (0-31) */
int addr;
int flags;
};
#define to_mdio_device(d) container_of(d, struct mdio_device, dev)
#define MDIO_DEVICE_FLAG_PHY 1
static inline bool mdio_phy_id_is_c45(int phy_id)
{
return (phy_id & MDIO_PHY_ID_C45) && !(phy_id & ~MDIO_PHY_ID_C45_MASK);
@ -188,4 +191,9 @@ int mdiobus_read_nested(struct mii_bus *bus, int addr, u32 regnum);
int mdiobus_write(struct mii_bus *bus, int addr, u32 regnum, u16 val);
int mdiobus_write_nested(struct mii_bus *bus, int addr, u32 regnum, u16 val);
int mdiobus_register_device(struct mdio_device *mdiodev);
int mdiobus_unregister_device(struct mdio_device *mdiodev);
bool mdiobus_is_registered_device(struct mii_bus *bus, int addr);
struct phy_device *mdiobus_get_phy(struct mii_bus *bus, int addr);
#endif /* __LINUX_MDIO_H__ */

2
include/linux/phy.h
View File

@ -180,7 +180,7 @@ struct mii_bus {
struct device dev;
/* list of all PHYs on bus */
struct phy_device *phy_map[PHY_MAX_ADDR];
struct mdio_device *mdio_map[PHY_MAX_ADDR];
/* PHY addresses to be ignored when probing */
u32 phy_mask;

3
net/dsa/slave.c
View File

@ -15,6 +15,7 @@
#include <linux/phy_fixed.h>
#include <linux/of_net.h>
#include <linux/of_mdio.h>
#include <linux/mdio.h>
#include <net/rtnetlink.h>
#include <net/switchdev.h>
#include <linux/if_bridge.h>
@ -997,7 +998,7 @@ static int dsa_slave_phy_connect(struct dsa_slave_priv *p,
{
struct dsa_switch *ds = p->parent;
p->phy = ds->slave_mii_bus->phy_map[addr];
p->phy = mdiobus_get_phy(ds->slave_mii_bus, addr);
if (!p->phy) {
netdev_err(slave_dev, "no phy at %d\n", addr);
return -ENODEV;