From b9c8263e94f9fba5fc7e8bee6c395ecf6437336d Mon Sep 17 00:00:00 2001 From: juhosg Date: Mon, 20 Jan 2014 10:22:54 +0000 Subject: generic: ar8216: add optimized rmw operation Signed-off-by: Gabor Juhos git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39336 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- .../linux/generic/files/drivers/net/phy/ar8216.c | 64 +++++++++++++++------- 1 file changed, 44 insertions(+), 20 deletions(-) (limited to 'target/linux/generic/files/drivers') diff --git a/target/linux/generic/files/drivers/net/phy/ar8216.c b/target/linux/generic/files/drivers/net/phy/ar8216.c index 952dee27ec..884b3199c1 100644 --- a/target/linux/generic/files/drivers/net/phy/ar8216.c +++ b/target/linux/generic/files/drivers/net/phy/ar8216.c @@ -92,6 +92,7 @@ struct ar8xxx_priv { u32 (*read)(struct ar8xxx_priv *priv, int reg); void (*write)(struct ar8xxx_priv *priv, int reg, u32 val); + u32 (*rmw)(struct ar8xxx_priv *priv, int reg, u32 mask, u32 val); int (*get_port_link)(unsigned port); @@ -326,6 +327,45 @@ ar8xxx_mii_write(struct ar8xxx_priv *priv, int reg, u32 val) mutex_unlock(&bus->mdio_lock); } +static u32 +ar8xxx_mii_rmw(struct ar8xxx_priv *priv, int reg, u32 mask, u32 val) +{ + struct mii_bus *bus = priv->mii_bus; + u16 r1, r2, page; + u16 lo, hi; + u32 ret; + + split_addr((u32) reg, &r1, &r2, &page); + + mutex_lock(&bus->mdio_lock); + + bus->write(bus, 0x18, 0, page); + usleep_range(1000, 2000); /* wait for the page switch to propagate */ + + lo = bus->read(bus, 0x10 | r2, r1); + hi = bus->read(bus, 0x10 | r2, r1 + 1); + + ret = hi << 16 | lo; + ret &= ~mask; + ret |= val; + + lo = ret & 0xffff; + hi = (u16) (ret >> 16); + + if (priv->mii_lo_first) { + bus->write(bus, 0x10 | r2, r1, lo); + bus->write(bus, 0x10 | r2, r1 + 1, hi); + } else { + bus->write(bus, 0x10 | r2, r1 + 1, hi); + bus->write(bus, 0x10 | r2, r1, lo); + } + + mutex_unlock(&bus->mdio_lock); + + return ret; +} + + static void ar8xxx_phy_dbg_write(struct ar8xxx_priv *priv, int phy_addr, u16 dbg_addr, u16 dbg_data) @@ -349,31 +389,16 @@ ar8xxx_phy_mmd_write(struct ar8xxx_priv *priv, int phy_addr, u16 addr, u16 data) mutex_unlock(&bus->mdio_lock); } -static u32 +static inline u32 ar8xxx_rmw(struct ar8xxx_priv *priv, int reg, u32 mask, u32 val) { - u32 v; - - lockdep_assert_held(&priv->reg_mutex); - - v = priv->read(priv, reg); - v &= ~mask; - v |= val; - priv->write(priv, reg, v); - - return v; + return priv->rmw(priv, reg, mask, val); } static inline void ar8xxx_reg_set(struct ar8xxx_priv *priv, int reg, u32 val) { - u32 v; - - lockdep_assert_held(&priv->reg_mutex); - - v = priv->read(priv, reg); - v |= val; - priv->write(priv, reg, v); + priv->rmw(priv, reg, 0, val); } static int @@ -408,10 +433,8 @@ ar8xxx_mib_op(struct ar8xxx_priv *priv, u32 op) else mib_func = AR8216_REG_MIB_FUNC; - mutex_lock(&priv->reg_mutex); /* Capture the hardware statistics for all ports */ ar8xxx_rmw(priv, mib_func, AR8216_MIB_FUNC, (op << AR8216_MIB_FUNC_S)); - mutex_unlock(&priv->reg_mutex); /* Wait for the capturing to complete. */ ret = ar8xxx_reg_wait(priv, mib_func, AR8216_MIB_BUSY, 0, 10); @@ -2225,6 +2248,7 @@ ar8xxx_create_mii(struct mii_bus *bus) priv->mii_bus = bus; priv->read = ar8xxx_mii_read; priv->write = ar8xxx_mii_write; + priv->rmw = ar8xxx_mii_rmw; } return priv; -- cgit v1.2.3