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ip17xx: Consolidate operations with PHY registers

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Call mdiobus_{read,write} instead of duplicating their code.

Introduce ip_phy_write_masked(), which changes a part of a register. Will
be used later in this patch series. Please note that it does not hold any
lock between reading and writing, so it is up to the caller to serialize.

Also add DUMP_MII_IO, which enables logging of all MII accesses.

Signed-off-by: Martin Mares <mj@ucw.cz>
Signed-off-by: Patrick Horn <patrick.horn@gmail.com>

SVN-Revision: 21709
This commit is contained in:
Gabor Juhos 2010-06-08 20:17:55 +00:00
parent c0c0a60718
commit f96f1cd16f
1 changed files with 42 additions and 49 deletions
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107
target/linux/generic-2.6/files/drivers/net/phy/ip175c.c
View file

@ -28,6 +28,7 @@
#define MAX_VLANS 16
#define MAX_PORTS 9
#undef DUMP_MII_IO
typedef struct ip175c_reg {
u16 p; // phy
@ -254,59 +255,57 @@ struct ip175c_state {
char buf[80];
};
static int ip_phy_read(struct mii_bus *bus, int port, int reg)
static int ip_phy_read(struct ip175c_state *state, int port, int reg)
{
int val;
mutex_lock(&bus->mdio_lock);
val = bus->read(bus, port, reg);
mutex_unlock(&bus->mdio_lock);
return val;
}
static int ip_phy_write(struct mii_bus *bus, int port, int reg, u16 val)
{
int err;
mutex_lock(&bus->mdio_lock);
err = bus->write(bus, port, reg, val);
mutex_unlock(&bus->mdio_lock);
return err;
}
static int getPhy (struct ip175c_state *state, reg mii)
{
struct mii_bus *bus = state->mii_bus;
int val;
if (!REG_SUPP(mii))
return -EFAULT;
val = ip_phy_read(bus, mii.p, mii.m);
int val = mdiobus_read(state->mii_bus, port, reg);
if (val < 0)
pr_warning("IP175C: Unable to get MII register %d,%d: error %d\n", mii.p,mii.m,-val);
pr_warning("IP175C: Unable to get MII register %d,%d: error %d\n", port, reg, -val);
#ifdef DUMP_MII_IO
else
pr_debug("IP175C: Read MII(%d,%d) -> %04x\n", port, reg, val);
#endif
return val;
}
static int setPhy (struct ip175c_state *state, reg mii, u16 value)
static int ip_phy_write(struct ip175c_state *state, int port, int reg, u16 val)
{
int err;
#ifdef DUMP_MII_IO
pr_debug("IP175C: Write MII(%d,%d) <- %04x\n", port, reg, val);
#endif
err = mdiobus_write(state->mii_bus, port, reg, val);
if (err < 0)
pr_warning("IP175C: Unable to write MII register %d,%d: error %d\n", port, reg, -err);
return err;
}
static int ip_phy_write_masked(struct ip175c_state *state, int port, int reg, unsigned int mask, unsigned int data)
{
int val = ip_phy_read(state, port, reg);
if (val < 0)
return 0;
return ip_phy_write(state, port, reg, (val & ~mask) | data);
}
static int getPhy(struct ip175c_state *state, reg mii)
{
if (!REG_SUPP(mii))
return -EFAULT;
return ip_phy_read(state, mii.p, mii.m);
}
static int setPhy(struct ip175c_state *state, reg mii, u16 value)
{
struct mii_bus *bus = state->mii_bus;
int err;
if (!REG_SUPP(mii))
return -EFAULT;
err = ip_phy_write(bus, mii.p, mii.m, value);
if (err < 0) {
pr_warning("IP175C: Unable to set MII register %d,%d to %d: error %d\n", mii.p,mii.m,value,-err);
err = ip_phy_write(state, mii.p, mii.m, value);
if (err < 0)
return err;
}
mdelay(2);
getPhy(state, mii);
return 0;
}
@ -833,15 +832,12 @@ static int ip175c_reset(struct switch_dev *dev)
err = getPhy(state, state->regs->MODE_REG);
}
if (REG_SUPP(state->regs->RESET_REG)) {
/* reset external phy ports, except on IP175A */
/* reset switch ports */
for (i = 0; i < state->regs->NUM_PORTS-1; i++) {
err = state->mii_bus->write(state->mii_bus, i,
MII_BMCR, BMCR_RESET);
err = ip_phy_write(state, i, MII_BMCR, BMCR_RESET);
if (err < 0)
return err;
}
}
return 0;
}
@ -983,7 +979,6 @@ static int ip175c_read_name(struct switch_dev *dev, const struct switch_attr *at
static int ip175c_set_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
{
struct ip175c_state *state = dev->priv;
struct mii_bus *bus = state->mii_bus;
int nr = val->port_vlan;
int ctrl;
int autoneg;
@ -1006,7 +1001,7 @@ static int ip175c_set_port_speed(struct switch_dev *dev, const struct switch_att
if (nr >= dev->ports || nr < 0)
return -EINVAL;
ctrl = ip_phy_read(bus, nr, 0);
ctrl = ip_phy_read(state, nr, 0);
if (ctrl < 0)
return -EIO;
@ -1015,13 +1010,12 @@ static int ip175c_set_port_speed(struct switch_dev *dev, const struct switch_att
ctrl |= (autoneg<<12);
ctrl |= (speed<<13);
return ip_phy_write(bus, nr, 0, ctrl);
return ip_phy_write(state, nr, 0, ctrl);
}
static int ip175c_get_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
{
struct ip175c_state *state = dev->priv;
struct mii_bus *bus = state->mii_bus;
int nr = val->port_vlan;
int speed, status;
@ -1033,8 +1027,8 @@ static int ip175c_get_port_speed(struct switch_dev *dev, const struct switch_att
if (nr >= dev->ports || nr < 0)
return -EINVAL;
status = ip_phy_read(bus, nr, 1);
speed = ip_phy_read(bus, nr, 18);
status = ip_phy_read(state, nr, 1);
speed = ip_phy_read(state, nr, 18);
if (status < 0 || speed < 0)
return -EIO;
@ -1050,7 +1044,6 @@ static int ip175c_get_port_speed(struct switch_dev *dev, const struct switch_att
static int ip175c_get_port_status(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
{
struct ip175c_state *state = dev->priv;
struct mii_bus *bus = state->mii_bus;
int ctrl, speed, status;
int nr = val->port_vlan;
int len;
@ -1065,9 +1058,9 @@ static int ip175c_get_port_status(struct switch_dev *dev, const struct switch_at
if (nr >= dev->ports || nr < 0)
return -EINVAL;
ctrl = ip_phy_read(bus, nr, 0);
status = ip_phy_read(bus, nr, 1);
speed = ip_phy_read(bus, nr, 18);
ctrl = ip_phy_read(state, nr, 0);
status = ip_phy_read(state, nr, 1);
speed = ip_phy_read(state, nr, 18);
if (ctrl < 0 || status < 0 || speed < 0)
return -EIO;