[PATCH net-next 00/10] net: mdio: Continue separating C22 and C45

[PATCH net-next 00/10] net: mdio: Continue separating C22 and C45

[Michael Walle]

I've picked this older series from Andrew up and rebased it onto
the latest net-next.

This is the second patch set in the series which separates the C22
and C45 MDIO bus transactions at the API level to the MDIO bus drivers.

Signed-off-by: Michael Walle <michael@walle.cc>



To: Heiner Kallweit <hkallweit1@gmail.com>
To: Russell King <linux@armlinux.org.uk>
To: "David S. Miller" <davem@davemloft.net>
To: Eric Dumazet <edumazet@google.com>
To: Jakub Kicinski <kuba@kernel.org>
To: Paolo Abeni <pabeni@redhat.com>
To: Ray Jui <rjui@broadcom.com>
To: Scott Branden <sbranden@broadcom.com>
To: Broadcom internal kernel review list <bcm-kernel-feedback-list@broadcom.com>
To: Joel Stanley <joel@jms.id.au>
To: Andrew Jeffery <andrew@aj.id.au>
To: Felix Fietkau <nbd@nbd.name>
To: John Crispin <john@phrozen.org>
To: Sean Wang <sean.wang@mediatek.com>
To: Mark Lee <Mark-MC.Lee@mediatek.com>
To: Lorenzo Bianconi <lorenzo@kernel.org>
To: Matthias Brugger <matthias.bgg@gmail.com>
To: Bryan Whitehead <bryan.whitehead@microchip.com>
To: UNGLinuxDriver@microchip.com
To: Giuseppe Cavallaro <peppe.cavallaro@st.com>
To: Alexandre Torgue <alexandre.torgue@foss.st.com>
To: Jose Abreu <joabreu@synopsys.com>
To: Maxime Coquelin <mcoquelin.stm32@gmail.com>
To: Vladimir Oltean <vladimir.oltean@nxp.com>
To: Claudiu Manoil <claudiu.manoil@nxp.com>
To: Alexandre Belloni <alexandre.belloni@bootlin.com>
To: Florian Fainelli <f.fainelli@gmail.com>
To: Li Yang <leoyang.li@nxp.com>
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-aspeed@lists.ozlabs.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linuxppc-dev@lists.ozlabs.org
Cc: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>

---
Andrew Lunn (10):
      net: mdio: cavium: Separate C22 and C45 transactions
      net: mdio: i2c: Separate C22 and C45 transactions
      net: mdio: mux-bcm-iproc: Separate C22 and C45 transactions
      net: mdio: aspeed: Separate C22 and C45 transactions
      net: mdio: ipq4019: Separate C22 and C45 transactions
      net: ethernet: mtk_eth_soc: Separate C22 and C45 transactions
      net: lan743x: Separate C22 and C45 transactions
      net: stmmac: Separate C22 and C45 transactions for xgmac2
      net: stmmac: Separate C22 and C45 transactions for xgmac
      enetc: Separate C22 and C45 transactions

 drivers/net/dsa/ocelot/felix_vsc9959.c             |   6 +-
 drivers/net/ethernet/freescale/enetc/enetc_mdio.c  | 119 ++++++--
 .../net/ethernet/freescale/enetc/enetc_pci_mdio.c  |   6 +-
 drivers/net/ethernet/freescale/enetc/enetc_pf.c    |  12 +-
 drivers/net/ethernet/mediatek/mtk_eth_soc.c        | 178 +++++++----
 drivers/net/ethernet/microchip/lan743x_main.c      | 106 ++++---
 drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c  | 331 ++++++++++++++-------
 drivers/net/mdio/mdio-aspeed.c                     |  47 +--
 drivers/net/mdio/mdio-cavium.c                     | 111 +++++--
 drivers/net/mdio/mdio-cavium.h                     |   9 +-
 drivers/net/mdio/mdio-i2c.c                        |  32 +-
 drivers/net/mdio/mdio-ipq4019.c                    | 154 ++++++----
 drivers/net/mdio/mdio-mux-bcm-iproc.c              |  54 +++-
 drivers/net/mdio/mdio-octeon.c                     |   6 +-
 drivers/net/mdio/mdio-thunder.c                    |   6 +-
 include/linux/fsl/enetc_mdio.h                     |  21 +-
 16 files changed, 766 insertions(+), 432 deletions(-)
---
base-commit: 0a093b2893c711d82622a9ab27da4f1172821336
change-id: 20230112-net-next-c45-seperation-part-2-1b8fbb144687

Best regards,
-- 
Michael Walle <michael@walle.cc>

[PATCH net-next 01/10] net: mdio: cavium: Separate C22 and C45 transactions

[Michael Walle]

From: Andrew Lunn <andrew@lunn.ch>

The cavium IP can perform both C22 and C45 transfers.  Create separate
functions for each and register the C45 versions in both the octeon
and thunder bus driver.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/net/mdio/mdio-cavium.c  | 111 +++++++++++++++++++++++++++++-----------
 drivers/net/mdio/mdio-cavium.h  |   9 +++-
 drivers/net/mdio/mdio-octeon.c  |   6 ++-
 drivers/net/mdio/mdio-thunder.c |   6 ++-
 4 files changed, 95 insertions(+), 37 deletions(-)

diff --git a/drivers/net/mdio/mdio-cavium.c b/drivers/net/mdio/mdio-cavium.c
index 95ce274c1be1..fd81546a4d3d 100644
--- a/drivers/net/mdio/mdio-cavium.c
+++ b/drivers/net/mdio/mdio-cavium.c
@@ -26,7 +26,7 @@ static void cavium_mdiobus_set_mode(struct cavium_mdiobus *p,
 }
 
 static int cavium_mdiobus_c45_addr(struct cavium_mdiobus *p,
-				   int phy_id, int regnum)
+				   int phy_id, int devad, int regnum)
 {
 	union cvmx_smix_cmd smi_cmd;
 	union cvmx_smix_wr_dat smi_wr;
@@ -38,12 +38,10 @@ static int cavium_mdiobus_c45_addr(struct cavium_mdiobus *p,
 	smi_wr.s.dat = regnum & 0xffff;
 	oct_mdio_writeq(smi_wr.u64, p->register_base + SMI_WR_DAT);
 
-	regnum = (regnum >> 16) & 0x1f;
-
 	smi_cmd.u64 = 0;
 	smi_cmd.s.phy_op = 0; /* MDIO_CLAUSE_45_ADDRESS */
 	smi_cmd.s.phy_adr = phy_id;
-	smi_cmd.s.reg_adr = regnum;
+	smi_cmd.s.reg_adr = devad;
 	oct_mdio_writeq(smi_cmd.u64, p->register_base + SMI_CMD);
 
 	do {
@@ -59,28 +57,51 @@ static int cavium_mdiobus_c45_addr(struct cavium_mdiobus *p,
 	return 0;
 }
 
-int cavium_mdiobus_read(struct mii_bus *bus, int phy_id, int regnum)
+int cavium_mdiobus_read_c22(struct mii_bus *bus, int phy_id, int regnum)
 {
 	struct cavium_mdiobus *p = bus->priv;
 	union cvmx_smix_cmd smi_cmd;
 	union cvmx_smix_rd_dat smi_rd;
-	unsigned int op = 1; /* MDIO_CLAUSE_22_READ */
 	int timeout = 1000;
 
-	if (regnum & MII_ADDR_C45) {
-		int r = cavium_mdiobus_c45_addr(p, phy_id, regnum);
+	cavium_mdiobus_set_mode(p, C22);
+
+	smi_cmd.u64 = 0;
+	smi_cmd.s.phy_op = 1; /* MDIO_CLAUSE_22_READ */;
+	smi_cmd.s.phy_adr = phy_id;
+	smi_cmd.s.reg_adr = regnum;
+	oct_mdio_writeq(smi_cmd.u64, p->register_base + SMI_CMD);
+
+	do {
+		/* Wait 1000 clocks so we don't saturate the RSL bus
+		 * doing reads.
+		 */
+		__delay(1000);
+		smi_rd.u64 = oct_mdio_readq(p->register_base + SMI_RD_DAT);
+	} while (smi_rd.s.pending && --timeout);
+
+	if (smi_rd.s.val)
+		return smi_rd.s.dat;
+	else
+		return -EIO;
+}
+EXPORT_SYMBOL(cavium_mdiobus_read_c22);
 
-		if (r < 0)
-			return r;
+int cavium_mdiobus_read_c45(struct mii_bus *bus, int phy_id, int devad,
+			    int regnum)
+{
+	struct cavium_mdiobus *p = bus->priv;
+	union cvmx_smix_cmd smi_cmd;
+	union cvmx_smix_rd_dat smi_rd;
+	int timeout = 1000;
+	int r;
 
-		regnum = (regnum >> 16) & 0x1f;
-		op = 3; /* MDIO_CLAUSE_45_READ */
-	} else {
-		cavium_mdiobus_set_mode(p, C22);
-	}
+	r = cavium_mdiobus_c45_addr(p, phy_id, devad, regnum);
+	if (r < 0)
+		return r;
 
 	smi_cmd.u64 = 0;
-	smi_cmd.s.phy_op = op;
+	smi_cmd.s.phy_op = 3; /* MDIO_CLAUSE_45_READ */
 	smi_cmd.s.phy_adr = phy_id;
 	smi_cmd.s.reg_adr = regnum;
 	oct_mdio_writeq(smi_cmd.u64, p->register_base + SMI_CMD);
@@ -98,36 +119,64 @@ int cavium_mdiobus_read(struct mii_bus *bus, int phy_id, int regnum)
 	else
 		return -EIO;
 }
-EXPORT_SYMBOL(cavium_mdiobus_read);
+EXPORT_SYMBOL(cavium_mdiobus_read_c45);
 
-int cavium_mdiobus_write(struct mii_bus *bus, int phy_id, int regnum, u16 val)
+int cavium_mdiobus_write_c22(struct mii_bus *bus, int phy_id, int regnum,
+			     u16 val)
 {
 	struct cavium_mdiobus *p = bus->priv;
 	union cvmx_smix_cmd smi_cmd;
 	union cvmx_smix_wr_dat smi_wr;
-	unsigned int op = 0; /* MDIO_CLAUSE_22_WRITE */
 	int timeout = 1000;
 
-	if (regnum & MII_ADDR_C45) {
-		int r = cavium_mdiobus_c45_addr(p, phy_id, regnum);
+	cavium_mdiobus_set_mode(p, C22);
 
-		if (r < 0)
-			return r;
+	smi_wr.u64 = 0;
+	smi_wr.s.dat = val;
+	oct_mdio_writeq(smi_wr.u64, p->register_base + SMI_WR_DAT);
 
-		regnum = (regnum >> 16) & 0x1f;
-		op = 1; /* MDIO_CLAUSE_45_WRITE */
-	} else {
-		cavium_mdiobus_set_mode(p, C22);
-	}
+	smi_cmd.u64 = 0;
+	smi_cmd.s.phy_op = 0; /* MDIO_CLAUSE_22_WRITE */;
+	smi_cmd.s.phy_adr = phy_id;
+	smi_cmd.s.reg_adr = regnum;
+	oct_mdio_writeq(smi_cmd.u64, p->register_base + SMI_CMD);
+
+	do {
+		/* Wait 1000 clocks so we don't saturate the RSL bus
+		 * doing reads.
+		 */
+		__delay(1000);
+		smi_wr.u64 = oct_mdio_readq(p->register_base + SMI_WR_DAT);
+	} while (smi_wr.s.pending && --timeout);
+
+	if (timeout <= 0)
+		return -EIO;
+
+	return 0;
+}
+EXPORT_SYMBOL(cavium_mdiobus_write_c22);
+
+int cavium_mdiobus_write_c45(struct mii_bus *bus, int phy_id, int devad,
+			     int regnum, u16 val)
+{
+	struct cavium_mdiobus *p = bus->priv;
+	union cvmx_smix_cmd smi_cmd;
+	union cvmx_smix_wr_dat smi_wr;
+	int timeout = 1000;
+	int r;
+
+	r = cavium_mdiobus_c45_addr(p, phy_id, devad, regnum);
+	if (r < 0)
+		return r;
 
 	smi_wr.u64 = 0;
 	smi_wr.s.dat = val;
 	oct_mdio_writeq(smi_wr.u64, p->register_base + SMI_WR_DAT);
 
 	smi_cmd.u64 = 0;
-	smi_cmd.s.phy_op = op;
+	smi_cmd.s.phy_op = 1; /* MDIO_CLAUSE_45_WRITE */
 	smi_cmd.s.phy_adr = phy_id;
-	smi_cmd.s.reg_adr = regnum;
+	smi_cmd.s.reg_adr = devad;
 	oct_mdio_writeq(smi_cmd.u64, p->register_base + SMI_CMD);
 
 	do {
@@ -143,7 +192,7 @@ int cavium_mdiobus_write(struct mii_bus *bus, int phy_id, int regnum, u16 val)
 
 	return 0;
 }
-EXPORT_SYMBOL(cavium_mdiobus_write);
+EXPORT_SYMBOL(cavium_mdiobus_write_c45);
 
 MODULE_DESCRIPTION("Common code for OCTEON and Thunder MDIO bus drivers");
 MODULE_AUTHOR("David Daney");
diff --git a/drivers/net/mdio/mdio-cavium.h b/drivers/net/mdio/mdio-cavium.h
index a2245d436f5d..71b8e20cd664 100644
--- a/drivers/net/mdio/mdio-cavium.h
+++ b/drivers/net/mdio/mdio-cavium.h
@@ -114,5 +114,10 @@ static inline u64 oct_mdio_readq(void __iomem *addr)
 #define oct_mdio_readq(addr)		readq(addr)
 #endif
 
-int cavium_mdiobus_read(struct mii_bus *bus, int phy_id, int regnum);
-int cavium_mdiobus_write(struct mii_bus *bus, int phy_id, int regnum, u16 val);
+int cavium_mdiobus_read_c22(struct mii_bus *bus, int phy_id, int regnum);
+int cavium_mdiobus_write_c22(struct mii_bus *bus, int phy_id, int regnum,
+			     u16 val);
+int cavium_mdiobus_read_c45(struct mii_bus *bus, int phy_id, int devad,
+			    int regnum);
+int cavium_mdiobus_write_c45(struct mii_bus *bus, int phy_id, int devad,
+			     int regnum, u16 val);
diff --git a/drivers/net/mdio/mdio-octeon.c b/drivers/net/mdio/mdio-octeon.c
index e096e68ac667..7c65c547d377 100644
--- a/drivers/net/mdio/mdio-octeon.c
+++ b/drivers/net/mdio/mdio-octeon.c
@@ -58,8 +58,10 @@ static int octeon_mdiobus_probe(struct platform_device *pdev)
 	snprintf(bus->mii_bus->id, MII_BUS_ID_SIZE, "%px", bus->register_base);
 	bus->mii_bus->parent = &pdev->dev;
 
-	bus->mii_bus->read = cavium_mdiobus_read;
-	bus->mii_bus->write = cavium_mdiobus_write;
+	bus->mii_bus->read = cavium_mdiobus_read_c22;
+	bus->mii_bus->write = cavium_mdiobus_write_c22;
+	bus->mii_bus->read_c45 = cavium_mdiobus_read_c45;
+	bus->mii_bus->write_c45 = cavium_mdiobus_write_c45;
 
 	platform_set_drvdata(pdev, bus);
 
diff --git a/drivers/net/mdio/mdio-thunder.c b/drivers/net/mdio/mdio-thunder.c
index 822d2cdd2f35..3847ee92c109 100644
--- a/drivers/net/mdio/mdio-thunder.c
+++ b/drivers/net/mdio/mdio-thunder.c
@@ -93,8 +93,10 @@ static int thunder_mdiobus_pci_probe(struct pci_dev *pdev,
 		bus->mii_bus->name = KBUILD_MODNAME;
 		snprintf(bus->mii_bus->id, MII_BUS_ID_SIZE, "%llx", r.start);
 		bus->mii_bus->parent = &pdev->dev;
-		bus->mii_bus->read = cavium_mdiobus_read;
-		bus->mii_bus->write = cavium_mdiobus_write;
+		bus->mii_bus->read = cavium_mdiobus_read_c22;
+		bus->mii_bus->write = cavium_mdiobus_write_c22;
+		bus->mii_bus->read_c45 = cavium_mdiobus_read_c45;
+		bus->mii_bus->write_c45 = cavium_mdiobus_write_c45;
 
 		err = of_mdiobus_register(bus->mii_bus, node);
 		if (err)

-- 
2.30.2

[PATCH net-next 02/10] net: mdio: i2c: Separate C22 and C45 transactions

[Michael Walle]

From: Andrew Lunn <andrew@lunn.ch>

The MDIO over I2C bus driver can perform both C22 and C45 transfers.
Create separate functions for each and register the C45 versions using
the new API calls.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/net/mdio/mdio-i2c.c | 32 +++++++++++++++++++++++---------
 1 file changed, 23 insertions(+), 9 deletions(-)

diff --git a/drivers/net/mdio/mdio-i2c.c b/drivers/net/mdio/mdio-i2c.c
index bf8bf5e20faf..9577a1842997 100644
--- a/drivers/net/mdio/mdio-i2c.c
+++ b/drivers/net/mdio/mdio-i2c.c
@@ -30,7 +30,8 @@ static unsigned int i2c_mii_phy_addr(int phy_id)
 	return phy_id + 0x40;
 }
 
-static int i2c_mii_read_default(struct mii_bus *bus, int phy_id, int reg)
+static int i2c_mii_read_default_c45(struct mii_bus *bus, int phy_id, int devad,
+				    int reg)
 {
 	struct i2c_adapter *i2c = bus->priv;
 	struct i2c_msg msgs[2];
@@ -41,8 +42,8 @@ static int i2c_mii_read_default(struct mii_bus *bus, int phy_id, int reg)
 		return 0xffff;
 
 	p = addr;
-	if (reg & MII_ADDR_C45) {
-		*p++ = 0x20 | ((reg >> 16) & 31);
+	if (devad >= 0) {
+		*p++ = 0x20 | devad;
 		*p++ = reg >> 8;
 	}
 	*p++ = reg;
@@ -64,8 +65,8 @@ static int i2c_mii_read_default(struct mii_bus *bus, int phy_id, int reg)
 	return data[0] << 8 | data[1];
 }
 
-static int i2c_mii_write_default(struct mii_bus *bus, int phy_id, int reg,
-				 u16 val)
+static int i2c_mii_write_default_c45(struct mii_bus *bus, int phy_id,
+				     int devad, int reg, u16 val)
 {
 	struct i2c_adapter *i2c = bus->priv;
 	struct i2c_msg msg;
@@ -76,8 +77,8 @@ static int i2c_mii_write_default(struct mii_bus *bus, int phy_id, int reg,
 		return 0;
 
 	p = data;
-	if (reg & MII_ADDR_C45) {
-		*p++ = (reg >> 16) & 31;
+	if (devad >= 0) {
+		*p++ = devad;
 		*p++ = reg >> 8;
 	}
 	*p++ = reg;
@@ -94,6 +95,17 @@ static int i2c_mii_write_default(struct mii_bus *bus, int phy_id, int reg,
 	return ret < 0 ? ret : 0;
 }
 
+static int i2c_mii_read_default_c22(struct mii_bus *bus, int phy_id, int reg)
+{
+	return i2c_mii_read_default_c45(bus, phy_id, -1, reg);
+}
+
+static int i2c_mii_write_default_c22(struct mii_bus *bus, int phy_id, int reg,
+				     u16 val)
+{
+	return i2c_mii_write_default_c45(bus, phy_id, -1, reg, val);
+}
+
 /* RollBall SFPs do not access internal PHY via I2C address 0x56, but
  * instead via address 0x51, when SFP page is set to 0x03 and password to
  * 0xffffffff.
@@ -403,8 +415,10 @@ struct mii_bus *mdio_i2c_alloc(struct device *parent, struct i2c_adapter *i2c,
 		mii->write = i2c_mii_write_rollball;
 		break;
 	default:
-		mii->read = i2c_mii_read_default;
-		mii->write = i2c_mii_write_default;
+		mii->read = i2c_mii_read_default_c22;
+		mii->write = i2c_mii_write_default_c22;
+		mii->read_c45 = i2c_mii_read_default_c45;
+		mii->write_c45 = i2c_mii_write_default_c45;
 		break;
 	}
 

-- 
2.30.2

[PATCH net-next 03/10] net: mdio: mux-bcm-iproc: Separate C22 and C45 transactions

[Michael Walle]

From: Andrew Lunn <andrew@lunn.ch>

The MDIO mux broadcom iproc can perform both C22 and C45 transfers.
Create separate functions for each and register the C45 versions using
the new API calls.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
---
Apparently, in the c45 case, the reg value including the MII_ADDR_C45
bit is written to the hardware. Looks weird, that a "random" software
bit is written to a register. Florian is that correct? Also, with this
patch this flag isn't set anymore.
---
 drivers/net/mdio/mdio-mux-bcm-iproc.c | 54 ++++++++++++++++++++++++++++-------
 1 file changed, 43 insertions(+), 11 deletions(-)

diff --git a/drivers/net/mdio/mdio-mux-bcm-iproc.c b/drivers/net/mdio/mdio-mux-bcm-iproc.c
index 014c0baedbd2..956d54846b62 100644
--- a/drivers/net/mdio/mdio-mux-bcm-iproc.c
+++ b/drivers/net/mdio/mdio-mux-bcm-iproc.c
@@ -98,7 +98,7 @@ static int iproc_mdio_wait_for_idle(void __iomem *base, bool result)
  * Return value: Successful Read operation returns read reg values and write
  *      operation returns 0. Failure operation returns negative error code.
  */
-static int start_miim_ops(void __iomem *base,
+static int start_miim_ops(void __iomem *base, bool c45,
 			  u16 phyid, u32 reg, u16 val, u32 op)
 {
 	u32 param;
@@ -112,7 +112,7 @@ static int start_miim_ops(void __iomem *base,
 	param = readl(base + MDIO_PARAM_OFFSET);
 	param |= phyid << MDIO_PARAM_PHY_ID;
 	param |= val << MDIO_PARAM_PHY_DATA;
-	if (reg & MII_ADDR_C45)
+	if (c45)
 		param |= BIT(MDIO_PARAM_C45_SEL);
 
 	writel(param, base + MDIO_PARAM_OFFSET);
@@ -131,28 +131,58 @@ static int start_miim_ops(void __iomem *base,
 	return ret;
 }
 
-static int iproc_mdiomux_read(struct mii_bus *bus, int phyid, int reg)
+static int iproc_mdiomux_read_c22(struct mii_bus *bus, int phyid, int reg)
 {
 	struct iproc_mdiomux_desc *md = bus->priv;
 	int ret;
 
-	ret = start_miim_ops(md->base, phyid, reg, 0, MDIO_CTRL_READ_OP);
+	ret = start_miim_ops(md->base, false, phyid, reg, 0, MDIO_CTRL_READ_OP);
 	if (ret < 0)
-		dev_err(&bus->dev, "mdiomux read operation failed!!!");
+		dev_err(&bus->dev, "mdiomux c22 read operation failed!!!");
 
 	return ret;
 }
 
-static int iproc_mdiomux_write(struct mii_bus *bus,
-			       int phyid, int reg, u16 val)
+static int iproc_mdiomux_read_c45(struct mii_bus *bus, int phyid, int devad,
+				  int reg)
+{
+	struct iproc_mdiomux_desc *md = bus->priv;
+	int ret;
+
+	ret = start_miim_ops(md->base, true, phyid, reg | devad << 16, 0,
+			     MDIO_CTRL_READ_OP);
+	if (ret < 0)
+		dev_err(&bus->dev, "mdiomux read c45 operation failed!!!");
+
+	return ret;
+}
+
+static int iproc_mdiomux_write_c22(struct mii_bus *bus,
+				   int phyid, int reg, u16 val)
+{
+	struct iproc_mdiomux_desc *md = bus->priv;
+	int ret;
+
+	/* Write val at reg offset */
+	ret = start_miim_ops(md->base, false, phyid, reg, val,
+			     MDIO_CTRL_WRITE_OP);
+	if (ret < 0)
+		dev_err(&bus->dev, "mdiomux write c22 operation failed!!!");
+
+	return ret;
+}
+
+static int iproc_mdiomux_write_c45(struct mii_bus *bus,
+				   int phyid, int devad, int reg, u16 val)
 {
 	struct iproc_mdiomux_desc *md = bus->priv;
 	int ret;
 
 	/* Write val at reg offset */
-	ret = start_miim_ops(md->base, phyid, reg, val, MDIO_CTRL_WRITE_OP);
+	ret = start_miim_ops(md->base, true, phyid, reg | devad << 16, val,
+			     MDIO_CTRL_WRITE_OP);
 	if (ret < 0)
-		dev_err(&bus->dev, "mdiomux write operation failed!!!");
+		dev_err(&bus->dev, "mdiomux write c45 operation failed!!!");
 
 	return ret;
 }
@@ -223,8 +253,10 @@ static int mdio_mux_iproc_probe(struct platform_device *pdev)
 	bus->name = "iProc MDIO mux bus";
 	snprintf(bus->id, MII_BUS_ID_SIZE, "%s-%d", pdev->name, pdev->id);
 	bus->parent = &pdev->dev;
-	bus->read = iproc_mdiomux_read;
-	bus->write = iproc_mdiomux_write;
+	bus->read = iproc_mdiomux_read_c22;
+	bus->write = iproc_mdiomux_write_c22;
+	bus->read_c45 = iproc_mdiomux_read_c45;
+	bus->write_c45 = iproc_mdiomux_write_c45;
 
 	bus->phy_mask = ~0;
 	bus->dev.of_node = pdev->dev.of_node;

-- 
2.30.2

[PATCH net-next 04/10] net: mdio: aspeed: Separate C22 and C45 transactions

[Michael Walle]

From: Andrew Lunn <andrew@lunn.ch>

The aspeed MDIO bus driver can perform both C22 and C45 transfers.
Modify the existing C45 functions to take the devad as a parameter,
and remove the wrappers so there are individual C22 and C45 functions. Add
the C45 functions to the new API calls.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/net/mdio/mdio-aspeed.c | 47 +++++++++++-------------------------------
 1 file changed, 12 insertions(+), 35 deletions(-)

diff --git a/drivers/net/mdio/mdio-aspeed.c b/drivers/net/mdio/mdio-aspeed.c
index 944d005d2bd1..2f4bbda5e56c 100644
--- a/drivers/net/mdio/mdio-aspeed.c
+++ b/drivers/net/mdio/mdio-aspeed.c
@@ -104,61 +104,36 @@ static int aspeed_mdio_write_c22(struct mii_bus *bus, int addr, int regnum,
 			      addr, regnum, val);
 }
 
-static int aspeed_mdio_read_c45(struct mii_bus *bus, int addr, int regnum)
+static int aspeed_mdio_read_c45(struct mii_bus *bus, int addr, int devad,
+				int regnum)
 {
-	u8 c45_dev = (regnum >> 16) & 0x1F;
-	u16 c45_addr = regnum & 0xFFFF;
 	int rc;
 
 	rc = aspeed_mdio_op(bus, ASPEED_MDIO_CTRL_ST_C45, MDIO_C45_OP_ADDR,
-			    addr, c45_dev, c45_addr);
+			    addr, devad, regnum);
 	if (rc < 0)
 		return rc;
 
 	rc = aspeed_mdio_op(bus, ASPEED_MDIO_CTRL_ST_C45, MDIO_C45_OP_READ,
-			    addr, c45_dev, 0);
+			    addr, devad, 0);
 	if (rc < 0)
 		return rc;
 
 	return aspeed_mdio_get_data(bus);
 }
 
-static int aspeed_mdio_write_c45(struct mii_bus *bus, int addr, int regnum,
-				 u16 val)
+static int aspeed_mdio_write_c45(struct mii_bus *bus, int addr, int devad,
+				 int regnum, u16 val)
 {
-	u8 c45_dev = (regnum >> 16) & 0x1F;
-	u16 c45_addr = regnum & 0xFFFF;
 	int rc;
 
 	rc = aspeed_mdio_op(bus, ASPEED_MDIO_CTRL_ST_C45, MDIO_C45_OP_ADDR,
-			    addr, c45_dev, c45_addr);
+			    addr, devad, regnum);
 	if (rc < 0)
 		return rc;
 
 	return aspeed_mdio_op(bus, ASPEED_MDIO_CTRL_ST_C45, MDIO_C45_OP_WRITE,
-			      addr, c45_dev, val);
-}
-
-static int aspeed_mdio_read(struct mii_bus *bus, int addr, int regnum)
-{
-	dev_dbg(&bus->dev, "%s: addr: %d, regnum: %d\n", __func__, addr,
-		regnum);
-
-	if (regnum & MII_ADDR_C45)
-		return aspeed_mdio_read_c45(bus, addr, regnum);
-
-	return aspeed_mdio_read_c22(bus, addr, regnum);
-}
-
-static int aspeed_mdio_write(struct mii_bus *bus, int addr, int regnum, u16 val)
-{
-	dev_dbg(&bus->dev, "%s: addr: %d, regnum: %d, val: 0x%x\n",
-		__func__, addr, regnum, val);
-
-	if (regnum & MII_ADDR_C45)
-		return aspeed_mdio_write_c45(bus, addr, regnum, val);
-
-	return aspeed_mdio_write_c22(bus, addr, regnum, val);
+			      addr, devad, val);
 }
 
 static int aspeed_mdio_probe(struct platform_device *pdev)
@@ -185,8 +160,10 @@ static int aspeed_mdio_probe(struct platform_device *pdev)
 	bus->name = DRV_NAME;
 	snprintf(bus->id, MII_BUS_ID_SIZE, "%s%d", pdev->name, pdev->id);
 	bus->parent = &pdev->dev;
-	bus->read = aspeed_mdio_read;
-	bus->write = aspeed_mdio_write;
+	bus->read = aspeed_mdio_read_c22;
+	bus->write = aspeed_mdio_write_c22;
+	bus->read_c45 = aspeed_mdio_read_c45;
+	bus->write_c45 = aspeed_mdio_write_c45;
 	bus->probe_capabilities = MDIOBUS_C22_C45;
 
 	rc = of_mdiobus_register(bus, pdev->dev.of_node);

-- 
2.30.2

[PATCH net-next 05/10] net: mdio: ipq4019: Separate C22 and C45 transactions

[Michael Walle]

From: Andrew Lunn <andrew@lunn.ch>

The ipq4019 driver can perform both C22 and C45 transfers.  Create
separate functions for each and register the C45 versions using the
new driver API calls.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/net/mdio/mdio-ipq4019.c | 154 +++++++++++++++++++++++-----------------
 1 file changed, 90 insertions(+), 64 deletions(-)

diff --git a/drivers/net/mdio/mdio-ipq4019.c b/drivers/net/mdio/mdio-ipq4019.c
index 4eba5a91075c..78b93de636f5 100644
--- a/drivers/net/mdio/mdio-ipq4019.c
+++ b/drivers/net/mdio/mdio-ipq4019.c
@@ -53,7 +53,8 @@ static int ipq4019_mdio_wait_busy(struct mii_bus *bus)
 				  IPQ4019_MDIO_SLEEP, IPQ4019_MDIO_TIMEOUT);
 }
 
-static int ipq4019_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
+static int ipq4019_mdio_read_c45(struct mii_bus *bus, int mii_id, int mmd,
+				 int reg)
 {
 	struct ipq4019_mdio_data *priv = bus->priv;
 	unsigned int data;
@@ -62,61 +63,71 @@ static int ipq4019_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
 	if (ipq4019_mdio_wait_busy(bus))
 		return -ETIMEDOUT;
 
-	/* Clause 45 support */
-	if (regnum & MII_ADDR_C45) {
-		unsigned int mmd = (regnum >> 16) & 0x1F;
-		unsigned int reg = regnum & 0xFFFF;
+	data = readl(priv->membase + MDIO_MODE_REG);
 
-		/* Enter Clause 45 mode */
-		data = readl(priv->membase + MDIO_MODE_REG);
+	data |= MDIO_MODE_C45;
 
-		data |= MDIO_MODE_C45;
+	writel(data, priv->membase + MDIO_MODE_REG);
 
-		writel(data, priv->membase + MDIO_MODE_REG);
+	/* issue the phy address and mmd */
+	writel((mii_id << 8) | mmd, priv->membase + MDIO_ADDR_REG);
 
-		/* issue the phy address and mmd */
-		writel((mii_id << 8) | mmd, priv->membase + MDIO_ADDR_REG);
+	/* issue reg */
+	writel(reg, priv->membase + MDIO_DATA_WRITE_REG);
 
-		/* issue reg */
-		writel(reg, priv->membase + MDIO_DATA_WRITE_REG);
+	cmd = MDIO_CMD_ACCESS_START | MDIO_CMD_ACCESS_CODE_C45_ADDR;
 
-		cmd = MDIO_CMD_ACCESS_START | MDIO_CMD_ACCESS_CODE_C45_ADDR;
-	} else {
-		/* Enter Clause 22 mode */
-		data = readl(priv->membase + MDIO_MODE_REG);
+	/* issue read command */
+	writel(cmd, priv->membase + MDIO_CMD_REG);
 
-		data &= ~MDIO_MODE_C45;
+	/* Wait read complete */
+	if (ipq4019_mdio_wait_busy(bus))
+		return -ETIMEDOUT;
 
-		writel(data, priv->membase + MDIO_MODE_REG);
+	cmd = MDIO_CMD_ACCESS_START | MDIO_CMD_ACCESS_CODE_C45_READ;
 
-		/* issue the phy address and reg */
-		writel((mii_id << 8) | regnum, priv->membase + MDIO_ADDR_REG);
+	writel(cmd, priv->membase + MDIO_CMD_REG);
 
-		cmd = MDIO_CMD_ACCESS_START | MDIO_CMD_ACCESS_CODE_READ;
-	}
+	if (ipq4019_mdio_wait_busy(bus))
+		return -ETIMEDOUT;
 
-	/* issue read command */
-	writel(cmd, priv->membase + MDIO_CMD_REG);
+	/* Read and return data */
+	return readl(priv->membase + MDIO_DATA_READ_REG);
+}
+
+static int ipq4019_mdio_read_c22(struct mii_bus *bus, int mii_id, int regnum)
+{
+	struct ipq4019_mdio_data *priv = bus->priv;
+	unsigned int data;
+	unsigned int cmd;
 
-	/* Wait read complete */
 	if (ipq4019_mdio_wait_busy(bus))
 		return -ETIMEDOUT;
 
-	if (regnum & MII_ADDR_C45) {
-		cmd = MDIO_CMD_ACCESS_START | MDIO_CMD_ACCESS_CODE_C45_READ;
+	data = readl(priv->membase + MDIO_MODE_REG);
 
-		writel(cmd, priv->membase + MDIO_CMD_REG);
+	data &= ~MDIO_MODE_C45;
 
-		if (ipq4019_mdio_wait_busy(bus))
-			return -ETIMEDOUT;
-	}
+	writel(data, priv->membase + MDIO_MODE_REG);
+
+	/* issue the phy address and reg */
+	writel((mii_id << 8) | regnum, priv->membase + MDIO_ADDR_REG);
+
+	cmd = MDIO_CMD_ACCESS_START | MDIO_CMD_ACCESS_CODE_READ;
+
+	/* issue read command */
+	writel(cmd, priv->membase + MDIO_CMD_REG);
+
+	/* Wait read complete */
+	if (ipq4019_mdio_wait_busy(bus))
+		return -ETIMEDOUT;
 
 	/* Read and return data */
 	return readl(priv->membase + MDIO_DATA_READ_REG);
 }
 
-static int ipq4019_mdio_write(struct mii_bus *bus, int mii_id, int regnum,
-							 u16 value)
+static int ipq4019_mdio_write_c45(struct mii_bus *bus, int mii_id, int mmd,
+				  int reg, u16 value)
 {
 	struct ipq4019_mdio_data *priv = bus->priv;
 	unsigned int data;
@@ -125,50 +136,63 @@ static int ipq4019_mdio_write(struct mii_bus *bus, int mii_id, int regnum,
 	if (ipq4019_mdio_wait_busy(bus))
 		return -ETIMEDOUT;
 
-	/* Clause 45 support */
-	if (regnum & MII_ADDR_C45) {
-		unsigned int mmd = (regnum >> 16) & 0x1F;
-		unsigned int reg = regnum & 0xFFFF;
+	data = readl(priv->membase + MDIO_MODE_REG);
 
-		/* Enter Clause 45 mode */
-		data = readl(priv->membase + MDIO_MODE_REG);
+	data |= MDIO_MODE_C45;
 
-		data |= MDIO_MODE_C45;
+	writel(data, priv->membase + MDIO_MODE_REG);
 
-		writel(data, priv->membase + MDIO_MODE_REG);
+	/* issue the phy address and mmd */
+	writel((mii_id << 8) | mmd, priv->membase + MDIO_ADDR_REG);
 
-		/* issue the phy address and mmd */
-		writel((mii_id << 8) | mmd, priv->membase + MDIO_ADDR_REG);
+	/* issue reg */
+	writel(reg, priv->membase + MDIO_DATA_WRITE_REG);
 
-		/* issue reg */
-		writel(reg, priv->membase + MDIO_DATA_WRITE_REG);
+	cmd = MDIO_CMD_ACCESS_START | MDIO_CMD_ACCESS_CODE_C45_ADDR;
 
-		cmd = MDIO_CMD_ACCESS_START | MDIO_CMD_ACCESS_CODE_C45_ADDR;
+	writel(cmd, priv->membase + MDIO_CMD_REG);
 
-		writel(cmd, priv->membase + MDIO_CMD_REG);
+	if (ipq4019_mdio_wait_busy(bus))
+		return -ETIMEDOUT;
 
-		if (ipq4019_mdio_wait_busy(bus))
-			return -ETIMEDOUT;
-	} else {
-		/* Enter Clause 22 mode */
-		data = readl(priv->membase + MDIO_MODE_REG);
+	/* issue write data */
+	writel(value, priv->membase + MDIO_DATA_WRITE_REG);
 
-		data &= ~MDIO_MODE_C45;
+	cmd = MDIO_CMD_ACCESS_START | MDIO_CMD_ACCESS_CODE_C45_WRITE;
+	writel(cmd, priv->membase + MDIO_CMD_REG);
 
-		writel(data, priv->membase + MDIO_MODE_REG);
+	/* Wait write complete */
+	if (ipq4019_mdio_wait_busy(bus))
+		return -ETIMEDOUT;
 
-		/* issue the phy address and reg */
-		writel((mii_id << 8) | regnum, priv->membase + MDIO_ADDR_REG);
-	}
+	return 0;
+}
+
+static int ipq4019_mdio_write_c22(struct mii_bus *bus, int mii_id, int regnum,
+				  u16 value)
+{
+	struct ipq4019_mdio_data *priv = bus->priv;
+	unsigned int data;
+	unsigned int cmd;
+
+	if (ipq4019_mdio_wait_busy(bus))
+		return -ETIMEDOUT;
+
+	/* Enter Clause 22 mode */
+	data = readl(priv->membase + MDIO_MODE_REG);
+
+	data &= ~MDIO_MODE_C45;
+
+	writel(data, priv->membase + MDIO_MODE_REG);
+
+	/* issue the phy address and reg */
+	writel((mii_id << 8) | regnum, priv->membase + MDIO_ADDR_REG);
 
 	/* issue write data */
 	writel(value, priv->membase + MDIO_DATA_WRITE_REG);
 
 	/* issue write command */
-	if (regnum & MII_ADDR_C45)
-		cmd = MDIO_CMD_ACCESS_START | MDIO_CMD_ACCESS_CODE_C45_WRITE;
-	else
-		cmd = MDIO_CMD_ACCESS_START | MDIO_CMD_ACCESS_CODE_WRITE;
+	cmd = MDIO_CMD_ACCESS_START | MDIO_CMD_ACCESS_CODE_WRITE;
 
 	writel(cmd, priv->membase + MDIO_CMD_REG);
 
@@ -235,8 +259,10 @@ static int ipq4019_mdio_probe(struct platform_device *pdev)
 		priv->eth_ldo_rdy = devm_ioremap_resource(&pdev->dev, res);
 
 	bus->name = "ipq4019_mdio";
-	bus->read = ipq4019_mdio_read;
-	bus->write = ipq4019_mdio_write;
+	bus->read = ipq4019_mdio_read_c22;
+	bus->write = ipq4019_mdio_write_c22;
+	bus->read_c45 = ipq4019_mdio_read_c45;
+	bus->write_c45 = ipq4019_mdio_write_c45;
 	bus->reset = ipq_mdio_reset;
 	bus->parent = &pdev->dev;
 	snprintf(bus->id, MII_BUS_ID_SIZE, "%s%d", pdev->name, pdev->id);

-- 
2.30.2

[PATCH net-next 06/10] net: ethernet: mtk_eth_soc: Separate C22 and C45 transactions

[Michael Walle]

From: Andrew Lunn <andrew@lunn.ch>

The mediatek bus driver can perform both C22 and C45 transfers.
Create separate functions for each and register the C45 versions using
the new API calls.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/net/ethernet/mediatek/mtk_eth_soc.c | 178 +++++++++++++++++-----------
 1 file changed, 112 insertions(+), 66 deletions(-)

diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index e3de9a53b2d9..dc50e0b227a6 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -215,8 +215,8 @@ static int mtk_mdio_busy_wait(struct mtk_eth *eth)
 	return -ETIMEDOUT;
 }
 
-static int _mtk_mdio_write(struct mtk_eth *eth, u32 phy_addr, u32 phy_reg,
-			   u32 write_data)
+static int _mtk_mdio_write_c22(struct mtk_eth *eth, u32 phy_addr, u32 phy_reg,
+			       u32 write_data)
 {
 	int ret;
 
@@ -224,35 +224,13 @@ static int _mtk_mdio_write(struct mtk_eth *eth, u32 phy_addr, u32 phy_reg,
 	if (ret < 0)
 		return ret;
 
-	if (phy_reg & MII_ADDR_C45) {
-		mtk_w32(eth, PHY_IAC_ACCESS |
-			     PHY_IAC_START_C45 |
-			     PHY_IAC_CMD_C45_ADDR |
-			     PHY_IAC_REG(mdiobus_c45_devad(phy_reg)) |
-			     PHY_IAC_ADDR(phy_addr) |
-			     PHY_IAC_DATA(mdiobus_c45_regad(phy_reg)),
-			MTK_PHY_IAC);
-
-		ret = mtk_mdio_busy_wait(eth);
-		if (ret < 0)
-			return ret;
-
-		mtk_w32(eth, PHY_IAC_ACCESS |
-			     PHY_IAC_START_C45 |
-			     PHY_IAC_CMD_WRITE |
-			     PHY_IAC_REG(mdiobus_c45_devad(phy_reg)) |
-			     PHY_IAC_ADDR(phy_addr) |
-			     PHY_IAC_DATA(write_data),
-			MTK_PHY_IAC);
-	} else {
-		mtk_w32(eth, PHY_IAC_ACCESS |
-			     PHY_IAC_START_C22 |
-			     PHY_IAC_CMD_WRITE |
-			     PHY_IAC_REG(phy_reg) |
-			     PHY_IAC_ADDR(phy_addr) |
-			     PHY_IAC_DATA(write_data),
-			MTK_PHY_IAC);
-	}
+	mtk_w32(eth, PHY_IAC_ACCESS |
+		PHY_IAC_START_C22 |
+		PHY_IAC_CMD_WRITE |
+		PHY_IAC_REG(phy_reg) |
+		PHY_IAC_ADDR(phy_addr) |
+		PHY_IAC_DATA(write_data),
+		MTK_PHY_IAC);
 
 	ret = mtk_mdio_busy_wait(eth);
 	if (ret < 0)
@@ -261,7 +239,8 @@ static int _mtk_mdio_write(struct mtk_eth *eth, u32 phy_addr, u32 phy_reg,
 	return 0;
 }
 
-static int _mtk_mdio_read(struct mtk_eth *eth, u32 phy_addr, u32 phy_reg)
+static int _mtk_mdio_write_c45(struct mtk_eth *eth, u32 phy_addr,
+			       u32 devad, u32 phy_reg, u32 write_data)
 {
 	int ret;
 
@@ -269,33 +248,82 @@ static int _mtk_mdio_read(struct mtk_eth *eth, u32 phy_addr, u32 phy_reg)
 	if (ret < 0)
 		return ret;
 
-	if (phy_reg & MII_ADDR_C45) {
-		mtk_w32(eth, PHY_IAC_ACCESS |
-			     PHY_IAC_START_C45 |
-			     PHY_IAC_CMD_C45_ADDR |
-			     PHY_IAC_REG(mdiobus_c45_devad(phy_reg)) |
-			     PHY_IAC_ADDR(phy_addr) |
-			     PHY_IAC_DATA(mdiobus_c45_regad(phy_reg)),
-			MTK_PHY_IAC);
-
-		ret = mtk_mdio_busy_wait(eth);
-		if (ret < 0)
-			return ret;
-
-		mtk_w32(eth, PHY_IAC_ACCESS |
-			     PHY_IAC_START_C45 |
-			     PHY_IAC_CMD_C45_READ |
-			     PHY_IAC_REG(mdiobus_c45_devad(phy_reg)) |
-			     PHY_IAC_ADDR(phy_addr),
-			MTK_PHY_IAC);
-	} else {
-		mtk_w32(eth, PHY_IAC_ACCESS |
-			     PHY_IAC_START_C22 |
-			     PHY_IAC_CMD_C22_READ |
-			     PHY_IAC_REG(phy_reg) |
-			     PHY_IAC_ADDR(phy_addr),
-			MTK_PHY_IAC);
-	}
+	mtk_w32(eth, PHY_IAC_ACCESS |
+		PHY_IAC_START_C45 |
+		PHY_IAC_CMD_C45_ADDR |
+		PHY_IAC_REG(devad) |
+		PHY_IAC_ADDR(phy_addr) |
+		PHY_IAC_DATA(phy_reg),
+		MTK_PHY_IAC);
+
+	ret = mtk_mdio_busy_wait(eth);
+	if (ret < 0)
+		return ret;
+
+	mtk_w32(eth, PHY_IAC_ACCESS |
+		PHY_IAC_START_C45 |
+		PHY_IAC_CMD_WRITE |
+		PHY_IAC_REG(devad) |
+		PHY_IAC_ADDR(phy_addr) |
+		PHY_IAC_DATA(write_data),
+		MTK_PHY_IAC);
+
+	ret = mtk_mdio_busy_wait(eth);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int _mtk_mdio_read_c22(struct mtk_eth *eth, u32 phy_addr, u32 phy_reg)
+{
+	int ret;
+
+	ret = mtk_mdio_busy_wait(eth);
+	if (ret < 0)
+		return ret;
+
+	mtk_w32(eth, PHY_IAC_ACCESS |
+		PHY_IAC_START_C22 |
+		PHY_IAC_CMD_C22_READ |
+		PHY_IAC_REG(phy_reg) |
+		PHY_IAC_ADDR(phy_addr),
+		MTK_PHY_IAC);
+
+	ret = mtk_mdio_busy_wait(eth);
+	if (ret < 0)
+		return ret;
+
+	return mtk_r32(eth, MTK_PHY_IAC) & PHY_IAC_DATA_MASK;
+}
+
+static int _mtk_mdio_read_c45(struct mtk_eth *eth, u32 phy_addr,
+			      u32 devad, u32 phy_reg)
+{
+	int ret;
+
+	ret = mtk_mdio_busy_wait(eth);
+	if (ret < 0)
+		return ret;
+
+	mtk_w32(eth, PHY_IAC_ACCESS |
+		PHY_IAC_START_C45 |
+		PHY_IAC_CMD_C45_ADDR |
+		PHY_IAC_REG(devad) |
+		PHY_IAC_ADDR(phy_addr) |
+		PHY_IAC_DATA(phy_reg),
+		MTK_PHY_IAC);
+
+	ret = mtk_mdio_busy_wait(eth);
+	if (ret < 0)
+		return ret;
+
+	mtk_w32(eth, PHY_IAC_ACCESS |
+		PHY_IAC_START_C45 |
+		PHY_IAC_CMD_C45_READ |
+		PHY_IAC_REG(devad) |
+		PHY_IAC_ADDR(phy_addr),
+		MTK_PHY_IAC);
 
 	ret = mtk_mdio_busy_wait(eth);
 	if (ret < 0)
@@ -304,19 +332,35 @@ static int _mtk_mdio_read(struct mtk_eth *eth, u32 phy_addr, u32 phy_reg)
 	return mtk_r32(eth, MTK_PHY_IAC) & PHY_IAC_DATA_MASK;
 }
 
-static int mtk_mdio_write(struct mii_bus *bus, int phy_addr,
-			  int phy_reg, u16 val)
+static int mtk_mdio_write_c22(struct mii_bus *bus, int phy_addr,
+			      int phy_reg, u16 val)
+{
+	struct mtk_eth *eth = bus->priv;
+
+	return _mtk_mdio_write_c22(eth, phy_addr, phy_reg, val);
+}
+
+static int mtk_mdio_write_c45(struct mii_bus *bus, int phy_addr,
+			      int devad, int phy_reg, u16 val)
+{
+	struct mtk_eth *eth = bus->priv;
+
+	return _mtk_mdio_write_c45(eth, phy_addr, devad, phy_reg, val);
+}
+
+static int mtk_mdio_read_c22(struct mii_bus *bus, int phy_addr, int phy_reg)
 {
 	struct mtk_eth *eth = bus->priv;
 
-	return _mtk_mdio_write(eth, phy_addr, phy_reg, val);
+	return _mtk_mdio_read_c22(eth, phy_addr, phy_reg);
 }
 
-static int mtk_mdio_read(struct mii_bus *bus, int phy_addr, int phy_reg)
+static int mtk_mdio_read_c45(struct mii_bus *bus, int phy_addr, int devad,
+			     int phy_reg)
 {
 	struct mtk_eth *eth = bus->priv;
 
-	return _mtk_mdio_read(eth, phy_addr, phy_reg);
+	return _mtk_mdio_read_c45(eth, phy_addr, devad, phy_reg);
 }
 
 static int mt7621_gmac0_rgmii_adjust(struct mtk_eth *eth,
@@ -760,8 +804,10 @@ static int mtk_mdio_init(struct mtk_eth *eth)
 	}
 
 	eth->mii_bus->name = "mdio";
-	eth->mii_bus->read = mtk_mdio_read;
-	eth->mii_bus->write = mtk_mdio_write;
+	eth->mii_bus->read = mtk_mdio_read_c22;
+	eth->mii_bus->write = mtk_mdio_write_c22;
+	eth->mii_bus->read_c45 = mtk_mdio_read_c45;
+	eth->mii_bus->write_c45 = mtk_mdio_write_c45;
 	eth->mii_bus->probe_capabilities = MDIOBUS_C22_C45;
 	eth->mii_bus->priv = eth;
 	eth->mii_bus->parent = eth->dev;

-- 
2.30.2

[PATCH net-next 07/10] net: lan743x: Separate C22 and C45 transactions

[Michael Walle]

From: Andrew Lunn <andrew@lunn.ch>

The microchip lan743x MDIO bus driver can perform both C22 and C45
transfers in some variants. Create separate functions for each and
register the C45 versions using the new API calls where appropriate.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/net/ethernet/microchip/lan743x_main.c | 106 +++++++++++++-------------
 1 file changed, 51 insertions(+), 55 deletions(-)

diff --git a/drivers/net/ethernet/microchip/lan743x_main.c b/drivers/net/ethernet/microchip/lan743x_main.c
index 534840f9a7ca..e205edf477de 100644
--- a/drivers/net/ethernet/microchip/lan743x_main.c
+++ b/drivers/net/ethernet/microchip/lan743x_main.c
@@ -792,7 +792,7 @@ static int lan743x_mac_mii_wait_till_not_busy(struct lan743x_adapter *adapter)
 				  !(data & MAC_MII_ACC_MII_BUSY_), 0, 1000000);
 }
 
-static int lan743x_mdiobus_read(struct mii_bus *bus, int phy_id, int index)
+static int lan743x_mdiobus_read_c22(struct mii_bus *bus, int phy_id, int index)
 {
 	struct lan743x_adapter *adapter = bus->priv;
 	u32 val, mii_access;
@@ -814,8 +814,8 @@ static int lan743x_mdiobus_read(struct mii_bus *bus, int phy_id, int index)
 	return (int)(val & 0xFFFF);
 }
 
-static int lan743x_mdiobus_write(struct mii_bus *bus,
-				 int phy_id, int index, u16 regval)
+static int lan743x_mdiobus_write_c22(struct mii_bus *bus,
+				     int phy_id, int index, u16 regval)
 {
 	struct lan743x_adapter *adapter = bus->priv;
 	u32 val, mii_access;
@@ -835,12 +835,10 @@ static int lan743x_mdiobus_write(struct mii_bus *bus,
 	return ret;
 }
 
-static u32 lan743x_mac_mmd_access(int id, int index, int op)
+static u32 lan743x_mac_mmd_access(int id, int dev_addr, int op)
 {
-	u16 dev_addr;
 	u32 ret;
 
-	dev_addr = (index >> 16) & 0x1f;
 	ret = (id << MAC_MII_ACC_PHY_ADDR_SHIFT_) &
 		MAC_MII_ACC_PHY_ADDR_MASK_;
 	ret |= (dev_addr << MAC_MII_ACC_MIIMMD_SHIFT_) &
@@ -858,7 +856,8 @@ static u32 lan743x_mac_mmd_access(int id, int index, int op)
 	return ret;
 }
 
-static int lan743x_mdiobus_c45_read(struct mii_bus *bus, int phy_id, int index)
+static int lan743x_mdiobus_read_c45(struct mii_bus *bus, int phy_id,
+				    int dev_addr, int index)
 {
 	struct lan743x_adapter *adapter = bus->priv;
 	u32 mmd_access;
@@ -868,32 +867,30 @@ static int lan743x_mdiobus_c45_read(struct mii_bus *bus, int phy_id, int index)
 	ret = lan743x_mac_mii_wait_till_not_busy(adapter);
 	if (ret < 0)
 		return ret;
-	if (index & MII_ADDR_C45) {
-		/* Load Register Address */
-		lan743x_csr_write(adapter, MAC_MII_DATA, (u32)(index & 0xffff));
-		mmd_access = lan743x_mac_mmd_access(phy_id, index,
-						    MMD_ACCESS_ADDRESS);
-		lan743x_csr_write(adapter, MAC_MII_ACC, mmd_access);
-		ret = lan743x_mac_mii_wait_till_not_busy(adapter);
-		if (ret < 0)
-			return ret;
-		/* Read Data */
-		mmd_access = lan743x_mac_mmd_access(phy_id, index,
-						    MMD_ACCESS_READ);
-		lan743x_csr_write(adapter, MAC_MII_ACC, mmd_access);
-		ret = lan743x_mac_mii_wait_till_not_busy(adapter);
-		if (ret < 0)
-			return ret;
-		ret = lan743x_csr_read(adapter, MAC_MII_DATA);
-		return (int)(ret & 0xFFFF);
-	}
 
-	ret = lan743x_mdiobus_read(bus, phy_id, index);
-	return ret;
+	/* Load Register Address */
+	lan743x_csr_write(adapter, MAC_MII_DATA, index);
+	mmd_access = lan743x_mac_mmd_access(phy_id, dev_addr,
+					    MMD_ACCESS_ADDRESS);
+	lan743x_csr_write(adapter, MAC_MII_ACC, mmd_access);
+	ret = lan743x_mac_mii_wait_till_not_busy(adapter);
+	if (ret < 0)
+		return ret;
+
+	/* Read Data */
+	mmd_access = lan743x_mac_mmd_access(phy_id, dev_addr,
+					    MMD_ACCESS_READ);
+	lan743x_csr_write(adapter, MAC_MII_ACC, mmd_access);
+	ret = lan743x_mac_mii_wait_till_not_busy(adapter);
+	if (ret < 0)
+		return ret;
+
+	ret = lan743x_csr_read(adapter, MAC_MII_DATA);
+	return (int)(ret & 0xFFFF);
 }
 
-static int lan743x_mdiobus_c45_write(struct mii_bus *bus,
-				     int phy_id, int index, u16 regval)
+static int lan743x_mdiobus_write_c45(struct mii_bus *bus, int phy_id,
+				     int dev_addr, int index, u16 regval)
 {
 	struct lan743x_adapter *adapter = bus->priv;
 	u32 mmd_access;
@@ -903,26 +900,23 @@ static int lan743x_mdiobus_c45_write(struct mii_bus *bus,
 	ret = lan743x_mac_mii_wait_till_not_busy(adapter);
 	if (ret < 0)
 		return ret;
-	if (index & MII_ADDR_C45) {
-		/* Load Register Address */
-		lan743x_csr_write(adapter, MAC_MII_DATA, (u32)(index & 0xffff));
-		mmd_access = lan743x_mac_mmd_access(phy_id, index,
-						    MMD_ACCESS_ADDRESS);
-		lan743x_csr_write(adapter, MAC_MII_ACC, mmd_access);
-		ret = lan743x_mac_mii_wait_till_not_busy(adapter);
-		if (ret < 0)
-			return ret;
-		/* Write Data */
-		lan743x_csr_write(adapter, MAC_MII_DATA, (u32)regval);
-		mmd_access = lan743x_mac_mmd_access(phy_id, index,
-						    MMD_ACCESS_WRITE);
-		lan743x_csr_write(adapter, MAC_MII_ACC, mmd_access);
-		ret = lan743x_mac_mii_wait_till_not_busy(adapter);
-	} else {
-		ret = lan743x_mdiobus_write(bus, phy_id, index, regval);
-	}
 
-	return ret;
+	/* Load Register Address */
+	lan743x_csr_write(adapter, MAC_MII_DATA, (u32)index);
+	mmd_access = lan743x_mac_mmd_access(phy_id, dev_addr,
+					    MMD_ACCESS_ADDRESS);
+	lan743x_csr_write(adapter, MAC_MII_ACC, mmd_access);
+	ret = lan743x_mac_mii_wait_till_not_busy(adapter);
+	if (ret < 0)
+		return ret;
+
+	/* Write Data */
+	lan743x_csr_write(adapter, MAC_MII_DATA, (u32)regval);
+	mmd_access = lan743x_mac_mmd_access(phy_id, dev_addr,
+					    MMD_ACCESS_WRITE);
+	lan743x_csr_write(adapter, MAC_MII_ACC, mmd_access);
+
+	return lan743x_mac_mii_wait_till_not_busy(adapter);
 }
 
 static int lan743x_sgmii_wait_till_not_busy(struct lan743x_adapter *adapter)
@@ -3286,8 +3280,10 @@ static int lan743x_mdiobus_init(struct lan743x_adapter *adapter)
 			netif_dbg(adapter, drv, adapter->netdev,
 				  "SGMII operation\n");
 			adapter->mdiobus->probe_capabilities = MDIOBUS_C22_C45;
-			adapter->mdiobus->read = lan743x_mdiobus_c45_read;
-			adapter->mdiobus->write = lan743x_mdiobus_c45_write;
+			adapter->mdiobus->read = lan743x_mdiobus_read_c22;
+			adapter->mdiobus->write = lan743x_mdiobus_write_c22;
+			adapter->mdiobus->read_c45 = lan743x_mdiobus_read_c45;
+			adapter->mdiobus->write_c45 = lan743x_mdiobus_write_c45;
 			adapter->mdiobus->name = "lan743x-mdiobus-c45";
 			netif_dbg(adapter, drv, adapter->netdev,
 				  "lan743x-mdiobus-c45\n");
@@ -3300,15 +3296,15 @@ static int lan743x_mdiobus_init(struct lan743x_adapter *adapter)
 				  "RGMII operation\n");
 			// Only C22 support when RGMII I/F
 			adapter->mdiobus->probe_capabilities = MDIOBUS_C22;
-			adapter->mdiobus->read = lan743x_mdiobus_read;
-			adapter->mdiobus->write = lan743x_mdiobus_write;
+			adapter->mdiobus->read = lan743x_mdiobus_read_c22;
+			adapter->mdiobus->write = lan743x_mdiobus_write_c22;
 			adapter->mdiobus->name = "lan743x-mdiobus";
 			netif_dbg(adapter, drv, adapter->netdev,
 				  "lan743x-mdiobus\n");
 		}
 	} else {
-		adapter->mdiobus->read = lan743x_mdiobus_read;
-		adapter->mdiobus->write = lan743x_mdiobus_write;
+		adapter->mdiobus->read = lan743x_mdiobus_read_c22;
+		adapter->mdiobus->write = lan743x_mdiobus_write_c22;
 		adapter->mdiobus->name = "lan743x-mdiobus";
 		netif_dbg(adapter, drv, adapter->netdev, "lan743x-mdiobus\n");
 	}

-- 
2.30.2

[PATCH net-next 08/10] net: stmmac: Separate C22 and C45 transactions for xgmac2

[Michael Walle]

From: Andrew Lunn <andrew@lunn.ch>

The stmicro stmmac xgmac2 MDIO bus driver can perform both C22 and C45
transfers. Create separate functions for each and register the C45
versions using the new API calls where appropriate.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c | 131 +++++++++++++---------
 1 file changed, 81 insertions(+), 50 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
index 5f177ea80725..4836a40df1af 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
@@ -45,8 +45,8 @@
 #define MII_XGMAC_PA_SHIFT		16
 #define MII_XGMAC_DA_SHIFT		21
 
-static int stmmac_xgmac2_c45_format(struct stmmac_priv *priv, int phyaddr,
-				    int phyreg, u32 *hw_addr)
+static void stmmac_xgmac2_c45_format(struct stmmac_priv *priv, int phyaddr,
+				     int devad, int phyreg, u32 *hw_addr)
 {
 	u32 tmp;
 
@@ -56,19 +56,14 @@ static int stmmac_xgmac2_c45_format(struct stmmac_priv *priv, int phyaddr,
 	writel(tmp, priv->ioaddr + XGMAC_MDIO_C22P);
 
 	*hw_addr = (phyaddr << MII_XGMAC_PA_SHIFT) | (phyreg & 0xffff);
-	*hw_addr |= (phyreg >> MII_DEVADDR_C45_SHIFT) << MII_XGMAC_DA_SHIFT;
-	return 0;
+	*hw_addr |= devad << MII_XGMAC_DA_SHIFT;
 }
 
-static int stmmac_xgmac2_c22_format(struct stmmac_priv *priv, int phyaddr,
-				    int phyreg, u32 *hw_addr)
+static void stmmac_xgmac2_c22_format(struct stmmac_priv *priv, int phyaddr,
+				     int phyreg, u32 *hw_addr)
 {
 	u32 tmp;
 
-	/* HW does not support C22 addr >= 4 */
-	if (phyaddr > MII_XGMAC_MAX_C22ADDR)
-		return -ENODEV;
-
 	/* Set port as Clause 22 */
 	tmp = readl(priv->ioaddr + XGMAC_MDIO_C22P);
 	tmp &= ~MII_XGMAC_C22P_MASK;
@@ -76,16 +71,14 @@ static int stmmac_xgmac2_c22_format(struct stmmac_priv *priv, int phyaddr,
 	writel(tmp, priv->ioaddr + XGMAC_MDIO_C22P);
 
 	*hw_addr = (phyaddr << MII_XGMAC_PA_SHIFT) | (phyreg & 0x1f);
-	return 0;
 }
 
-static int stmmac_xgmac2_mdio_read(struct mii_bus *bus, int phyaddr, int phyreg)
+static int stmmac_xgmac2_mdio_read(struct stmmac_priv *priv, u32 addr,
+				   u32 value)
 {
-	struct net_device *ndev = bus->priv;
-	struct stmmac_priv *priv = netdev_priv(ndev);
 	unsigned int mii_address = priv->hw->mii.addr;
 	unsigned int mii_data = priv->hw->mii.data;
-	u32 tmp, addr, value = MII_XGMAC_BUSY;
+	u32 tmp;
 	int ret;
 
 	ret = pm_runtime_resume_and_get(priv->device);
@@ -99,20 +92,6 @@ static int stmmac_xgmac2_mdio_read(struct mii_bus *bus, int phyaddr, int phyreg)
 		goto err_disable_clks;
 	}
 
-	if (phyreg & MII_ADDR_C45) {
-		phyreg &= ~MII_ADDR_C45;
-
-		ret = stmmac_xgmac2_c45_format(priv, phyaddr, phyreg, &addr);
-		if (ret)
-			goto err_disable_clks;
-	} else {
-		ret = stmmac_xgmac2_c22_format(priv, phyaddr, phyreg, &addr);
-		if (ret)
-			goto err_disable_clks;
-
-		value |= MII_XGMAC_SADDR;
-	}
-
 	value |= (priv->clk_csr << priv->hw->mii.clk_csr_shift)
 		& priv->hw->mii.clk_csr_mask;
 	value |= MII_XGMAC_READ;
@@ -144,14 +123,44 @@ static int stmmac_xgmac2_mdio_read(struct mii_bus *bus, int phyaddr, int phyreg)
 	return ret;
 }
 
-static int stmmac_xgmac2_mdio_write(struct mii_bus *bus, int phyaddr,
-				    int phyreg, u16 phydata)
+static int stmmac_xgmac2_mdio_read_c22(struct mii_bus *bus, int phyaddr,
+				       int phyreg)
 {
 	struct net_device *ndev = bus->priv;
-	struct stmmac_priv *priv = netdev_priv(ndev);
+	struct stmmac_priv *priv;
+	u32 addr;
+
+	priv = netdev_priv(ndev);
+
+	/* HW does not support C22 addr >= 4 */
+	if (phyaddr > MII_XGMAC_MAX_C22ADDR)
+		return -ENODEV;
+
+	stmmac_xgmac2_c22_format(priv, phyaddr, phyreg, &addr);
+
+	return stmmac_xgmac2_mdio_read(priv, addr, MII_XGMAC_BUSY);
+}
+
+static int stmmac_xgmac2_mdio_read_c45(struct mii_bus *bus, int phyaddr,
+				       int devad, int phyreg)
+{
+	struct net_device *ndev = bus->priv;
+	struct stmmac_priv *priv;
+	u32 addr;
+
+	priv = netdev_priv(ndev);
+
+	stmmac_xgmac2_c45_format(priv, phyaddr, devad, phyreg, &addr);
+
+	return stmmac_xgmac2_mdio_read(priv, addr, MII_XGMAC_BUSY);
+}
+
+static int stmmac_xgmac2_mdio_write(struct stmmac_priv *priv, u32 addr,
+				    u32 value, u16 phydata)
+{
 	unsigned int mii_address = priv->hw->mii.addr;
 	unsigned int mii_data = priv->hw->mii.data;
-	u32 addr, tmp, value = MII_XGMAC_BUSY;
+	u32 tmp;
 	int ret;
 
 	ret = pm_runtime_resume_and_get(priv->device);
@@ -165,20 +174,6 @@ static int stmmac_xgmac2_mdio_write(struct mii_bus *bus, int phyaddr,
 		goto err_disable_clks;
 	}
 
-	if (phyreg & MII_ADDR_C45) {
-		phyreg &= ~MII_ADDR_C45;
-
-		ret = stmmac_xgmac2_c45_format(priv, phyaddr, phyreg, &addr);
-		if (ret)
-			goto err_disable_clks;
-	} else {
-		ret = stmmac_xgmac2_c22_format(priv, phyaddr, phyreg, &addr);
-		if (ret)
-			goto err_disable_clks;
-
-		value |= MII_XGMAC_SADDR;
-	}
-
 	value |= (priv->clk_csr << priv->hw->mii.clk_csr_shift)
 		& priv->hw->mii.clk_csr_mask;
 	value |= phydata;
@@ -205,6 +200,40 @@ static int stmmac_xgmac2_mdio_write(struct mii_bus *bus, int phyaddr,
 	return ret;
 }
 
+static int stmmac_xgmac2_mdio_write_c22(struct mii_bus *bus, int phyaddr,
+					int phyreg, u16 phydata)
+{
+	struct net_device *ndev = bus->priv;
+	struct stmmac_priv *priv;
+	u32 addr;
+
+	priv = netdev_priv(ndev);
+
+	/* HW does not support C22 addr >= 4 */
+	if (phyaddr > MII_XGMAC_MAX_C22ADDR)
+		return -ENODEV;
+
+	stmmac_xgmac2_c22_format(priv, phyaddr, phyreg, &addr);
+
+	return stmmac_xgmac2_mdio_write(priv, addr,
+					MII_XGMAC_BUSY | MII_XGMAC_SADDR, phydata);
+}
+
+static int stmmac_xgmac2_mdio_write_c45(struct mii_bus *bus, int phyaddr,
+					int devad, int phyreg, u16 phydata)
+{
+	struct net_device *ndev = bus->priv;
+	struct stmmac_priv *priv;
+	u32 addr;
+
+	priv = netdev_priv(ndev);
+
+	stmmac_xgmac2_c45_format(priv, phyaddr, devad, phyreg, &addr);
+
+	return stmmac_xgmac2_mdio_write(priv, addr, MII_XGMAC_BUSY,
+					phydata);
+}
+
 /**
  * stmmac_mdio_read
  * @bus: points to the mii_bus structure
@@ -457,8 +486,10 @@ int stmmac_mdio_register(struct net_device *ndev)
 		new_bus->probe_capabilities = MDIOBUS_C22_C45;
 
 	if (priv->plat->has_xgmac) {
-		new_bus->read = &stmmac_xgmac2_mdio_read;
-		new_bus->write = &stmmac_xgmac2_mdio_write;
+		new_bus->read = &stmmac_xgmac2_mdio_read_c22;
+		new_bus->write = &stmmac_xgmac2_mdio_write_c22;
+		new_bus->read_c45 = &stmmac_xgmac2_mdio_read_c45;
+		new_bus->write_c45 = &stmmac_xgmac2_mdio_write_c45;
 
 		/* Right now only C22 phys are supported */
 		max_addr = MII_XGMAC_MAX_C22ADDR + 1;
@@ -490,7 +521,7 @@ int stmmac_mdio_register(struct net_device *ndev)
 
 	/* Looks like we need a dummy read for XGMAC only and C45 PHYs */
 	if (priv->plat->has_xgmac)
-		stmmac_xgmac2_mdio_read(new_bus, 0, MII_ADDR_C45);
+		stmmac_xgmac2_mdio_read_c45(new_bus, 0, 0, 0);
 
 	/* If fixed-link is set, skip PHY scanning */
 	if (!fwnode)

-- 
2.30.2

[PATCH net-next 09/10] net: stmmac: Separate C22 and C45 transactions for xgmac

[Michael Walle]

From: Andrew Lunn <andrew@lunn.ch>

The stmmac MDIO bus driver in variant gmac4 can perform both C22 and
C45 transfers. Create separate functions for each and register the
C45 versions using the new API calls where appropriate.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c | 200 +++++++++++++++-------
 1 file changed, 138 insertions(+), 62 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
index 4836a40df1af..d2cb22f49ce5 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
@@ -234,8 +234,29 @@ static int stmmac_xgmac2_mdio_write_c45(struct mii_bus *bus, int phyaddr,
 					phydata);
 }
 
+static int stmmac_mdio_read(struct stmmac_priv *priv, int data, u32 value)
+{
+	unsigned int mii_address = priv->hw->mii.addr;
+	unsigned int mii_data = priv->hw->mii.data;
+	u32 v;
+
+	if (readl_poll_timeout(priv->ioaddr + mii_address, v, !(v & MII_BUSY),
+			       100, 10000))
+		return -EBUSY;
+
+	writel(data, priv->ioaddr + mii_data);
+	writel(value, priv->ioaddr + mii_address);
+
+	if (readl_poll_timeout(priv->ioaddr + mii_address, v, !(v & MII_BUSY),
+			       100, 10000))
+		return -EBUSY;
+
+	/* Read the data from the MII data register */
+	return readl(priv->ioaddr + mii_data) & MII_DATA_MASK;
+}
+
 /**
- * stmmac_mdio_read
+ * stmmac_mdio_read_c22
  * @bus: points to the mii_bus structure
  * @phyaddr: MII addr
  * @phyreg: MII reg
@@ -244,15 +265,12 @@ static int stmmac_xgmac2_mdio_write_c45(struct mii_bus *bus, int phyaddr,
  * accessing the PHY registers.
  * Fortunately, it seems this has no drawback for the 7109 MAC.
  */
-static int stmmac_mdio_read(struct mii_bus *bus, int phyaddr, int phyreg)
+static int stmmac_mdio_read_c22(struct mii_bus *bus, int phyaddr, int phyreg)
 {
 	struct net_device *ndev = bus->priv;
 	struct stmmac_priv *priv = netdev_priv(ndev);
-	unsigned int mii_address = priv->hw->mii.addr;
-	unsigned int mii_data = priv->hw->mii.data;
 	u32 value = MII_BUSY;
 	int data = 0;
-	u32 v;
 
 	data = pm_runtime_resume_and_get(priv->device);
 	if (data < 0)
@@ -265,60 +283,94 @@ static int stmmac_mdio_read(struct mii_bus *bus, int phyaddr, int phyreg)
 		& priv->hw->mii.clk_csr_mask;
 	if (priv->plat->has_gmac4) {
 		value |= MII_GMAC4_READ;
-		if (phyreg & MII_ADDR_C45) {
-			value |= MII_GMAC4_C45E;
-			value &= ~priv->hw->mii.reg_mask;
-			value |= ((phyreg >> MII_DEVADDR_C45_SHIFT) <<
-			       priv->hw->mii.reg_shift) &
-			       priv->hw->mii.reg_mask;
-
-			data |= (phyreg & MII_REGADDR_C45_MASK) <<
-				MII_GMAC4_REG_ADDR_SHIFT;
-		}
 	}
 
-	if (readl_poll_timeout(priv->ioaddr + mii_address, v, !(v & MII_BUSY),
-			       100, 10000)) {
-		data = -EBUSY;
-		goto err_disable_clks;
-	}
+	data = stmmac_mdio_read(priv, data, value);
 
-	writel(data, priv->ioaddr + mii_data);
-	writel(value, priv->ioaddr + mii_address);
+	pm_runtime_put(priv->device);
 
-	if (readl_poll_timeout(priv->ioaddr + mii_address, v, !(v & MII_BUSY),
-			       100, 10000)) {
-		data = -EBUSY;
-		goto err_disable_clks;
+	return data;
+}
+
+/**
+ * stmmac_mdio_read_c45
+ * @bus: points to the mii_bus structure
+ * @phyaddr: MII addr
+ * @devad: device address to read
+ * @phyreg: MII reg
+ * Description: it reads data from the MII register from within the phy device.
+ * For the 7111 GMAC, we must set the bit 0 in the MII address register while
+ * accessing the PHY registers.
+ * Fortunately, it seems this has no drawback for the 7109 MAC.
+ */
+static int stmmac_mdio_read_c45(struct mii_bus *bus, int phyaddr, int devad,
+				int phyreg)
+{
+	struct net_device *ndev = bus->priv;
+	struct stmmac_priv *priv = netdev_priv(ndev);
+	u32 value = MII_BUSY;
+	int data = 0;
+
+	data = pm_runtime_get_sync(priv->device);
+	if (data < 0) {
+		pm_runtime_put_noidle(priv->device);
+		return data;
 	}
 
-	/* Read the data from the MII data register */
-	data = (int)readl(priv->ioaddr + mii_data) & MII_DATA_MASK;
+	value |= (phyaddr << priv->hw->mii.addr_shift)
+		& priv->hw->mii.addr_mask;
+	value |= (phyreg << priv->hw->mii.reg_shift) & priv->hw->mii.reg_mask;
+	value |= (priv->clk_csr << priv->hw->mii.clk_csr_shift)
+		& priv->hw->mii.clk_csr_mask;
+	value |= MII_GMAC4_READ;
+	value |= MII_GMAC4_C45E;
+	value &= ~priv->hw->mii.reg_mask;
+	value |= (devad << priv->hw->mii.reg_shift) & priv->hw->mii.reg_mask;
+
+	data |= phyreg << MII_GMAC4_REG_ADDR_SHIFT;
+
+	data = stmmac_mdio_read(priv, data, value);
 
-err_disable_clks:
 	pm_runtime_put(priv->device);
 
 	return data;
 }
 
+static int stmmac_mdio_write(struct stmmac_priv *priv, int data, u32 value)
+{
+	unsigned int mii_address = priv->hw->mii.addr;
+	unsigned int mii_data = priv->hw->mii.data;
+	u32 v;
+
+	/* Wait until any existing MII operation is complete */
+	if (readl_poll_timeout(priv->ioaddr + mii_address, v, !(v & MII_BUSY),
+			       100, 10000))
+		return -EBUSY;
+
+	/* Set the MII address register to write */
+	writel(data, priv->ioaddr + mii_data);
+	writel(value, priv->ioaddr + mii_address);
+
+	/* Wait until any existing MII operation is complete */
+	return readl_poll_timeout(priv->ioaddr + mii_address, v,
+				  !(v & MII_BUSY), 100, 10000);
+}
+
 /**
- * stmmac_mdio_write
+ * stmmac_mdio_write_c22
  * @bus: points to the mii_bus structure
  * @phyaddr: MII addr
  * @phyreg: MII reg
  * @phydata: phy data
  * Description: it writes the data into the MII register from within the device.
  */
-static int stmmac_mdio_write(struct mii_bus *bus, int phyaddr, int phyreg,
-			     u16 phydata)
+static int stmmac_mdio_write_c22(struct mii_bus *bus, int phyaddr, int phyreg,
+				 u16 phydata)
 {
 	struct net_device *ndev = bus->priv;
 	struct stmmac_priv *priv = netdev_priv(ndev);
-	unsigned int mii_address = priv->hw->mii.addr;
-	unsigned int mii_data = priv->hw->mii.data;
 	int ret, data = phydata;
 	u32 value = MII_BUSY;
-	u32 v;
 
 	ret = pm_runtime_resume_and_get(priv->device);
 	if (ret < 0)
@@ -330,38 +382,57 @@ static int stmmac_mdio_write(struct mii_bus *bus, int phyaddr, int phyreg,
 
 	value |= (priv->clk_csr << priv->hw->mii.clk_csr_shift)
 		& priv->hw->mii.clk_csr_mask;
-	if (priv->plat->has_gmac4) {
+	if (priv->plat->has_gmac4)
 		value |= MII_GMAC4_WRITE;
-		if (phyreg & MII_ADDR_C45) {
-			value |= MII_GMAC4_C45E;
-			value &= ~priv->hw->mii.reg_mask;
-			value |= ((phyreg >> MII_DEVADDR_C45_SHIFT) <<
-			       priv->hw->mii.reg_shift) &
-			       priv->hw->mii.reg_mask;
-
-			data |= (phyreg & MII_REGADDR_C45_MASK) <<
-				MII_GMAC4_REG_ADDR_SHIFT;
-		}
-	} else {
+	else
 		value |= MII_WRITE;
-	}
 
-	/* Wait until any existing MII operation is complete */
-	if (readl_poll_timeout(priv->ioaddr + mii_address, v, !(v & MII_BUSY),
-			       100, 10000)) {
-		ret = -EBUSY;
-		goto err_disable_clks;
+	ret = stmmac_mdio_write(priv, data, value);
+
+	pm_runtime_put(priv->device);
+
+	return ret;
+}
+
+/**
+ * stmmac_mdio_write_c45
+ * @bus: points to the mii_bus structure
+ * @phyaddr: MII addr
+ * @phyreg: MII reg
+ * @devad: device address to read
+ * @phydata: phy data
+ * Description: it writes the data into the MII register from within the device.
+ */
+static int stmmac_mdio_write_c45(struct mii_bus *bus, int phyaddr,
+				 int devad, int phyreg, u16 phydata)
+{
+	struct net_device *ndev = bus->priv;
+	struct stmmac_priv *priv = netdev_priv(ndev);
+	int ret, data = phydata;
+	u32 value = MII_BUSY;
+
+	ret = pm_runtime_get_sync(priv->device);
+	if (ret < 0) {
+		pm_runtime_put_noidle(priv->device);
+		return ret;
 	}
 
-	/* Set the MII address register to write */
-	writel(data, priv->ioaddr + mii_data);
-	writel(value, priv->ioaddr + mii_address);
+	value |= (phyaddr << priv->hw->mii.addr_shift)
+		& priv->hw->mii.addr_mask;
+	value |= (phyreg << priv->hw->mii.reg_shift) & priv->hw->mii.reg_mask;
 
-	/* Wait until any existing MII operation is complete */
-	ret = readl_poll_timeout(priv->ioaddr + mii_address, v, !(v & MII_BUSY),
-				 100, 10000);
+	value |= (priv->clk_csr << priv->hw->mii.clk_csr_shift)
+		& priv->hw->mii.clk_csr_mask;
+
+	value |= MII_GMAC4_WRITE;
+	value |= MII_GMAC4_C45E;
+	value &= ~priv->hw->mii.reg_mask;
+	value |= (devad << priv->hw->mii.reg_shift) & priv->hw->mii.reg_mask;
+
+	data |= phyreg << MII_GMAC4_REG_ADDR_SHIFT;
+
+	ret = stmmac_mdio_write(priv, data, value);
 
-err_disable_clks:
 	pm_runtime_put(priv->device);
 
 	return ret;
@@ -499,8 +570,13 @@ int stmmac_mdio_register(struct net_device *ndev)
 			dev_err(dev, "Unsupported phy_addr (max=%d)\n",
 					MII_XGMAC_MAX_C22ADDR);
 	} else {
-		new_bus->read = &stmmac_mdio_read;
-		new_bus->write = &stmmac_mdio_write;
+		new_bus->read = &stmmac_mdio_read_c22;
+		new_bus->write = &stmmac_mdio_write_c22;
+		if (priv->plat->has_gmac4) {
+			new_bus->read_c45 = &stmmac_mdio_read_c45;
+			new_bus->write_c45 = &stmmac_mdio_write_c45;
+		}
+
 		max_addr = PHY_MAX_ADDR;
 	}
 

-- 
2.30.2

[PATCH net-next 10/10] enetc: Separate C22 and C45 transactions

[Michael Walle]

From: Andrew Lunn <andrew@lunn.ch>

The enetc MDIO bus driver can perform both C22 and C45 transfers.
Create separate functions for each and register the C45 versions using
the new API calls where appropriate.

This driver is shared with the Felix DSA switch, so update that at the
same time.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/net/dsa/ocelot/felix_vsc9959.c             |   6 +-
 drivers/net/ethernet/freescale/enetc/enetc_mdio.c  | 119 +++++++++++++++------
 .../net/ethernet/freescale/enetc/enetc_pci_mdio.c  |   6 +-
 drivers/net/ethernet/freescale/enetc/enetc_pf.c    |  12 ++-
 include/linux/fsl/enetc_mdio.h                     |  21 +++-
 5 files changed, 121 insertions(+), 43 deletions(-)

diff --git a/drivers/net/dsa/ocelot/felix_vsc9959.c b/drivers/net/dsa/ocelot/felix_vsc9959.c
index 01ac70fd7ddf..cbcc457499f3 100644
--- a/drivers/net/dsa/ocelot/felix_vsc9959.c
+++ b/drivers/net/dsa/ocelot/felix_vsc9959.c
@@ -954,8 +954,10 @@ static int vsc9959_mdio_bus_alloc(struct ocelot *ocelot)
 		return -ENOMEM;
 
 	bus->name = "VSC9959 internal MDIO bus";
-	bus->read = enetc_mdio_read;
-	bus->write = enetc_mdio_write;
+	bus->read = enetc_mdio_read_c22;
+	bus->write = enetc_mdio_write_c22;
+	bus->read_c45 = enetc_mdio_read_c45;
+	bus->write_c45 = enetc_mdio_write_c45;
 	bus->parent = dev;
 	mdio_priv = bus->priv;
 	mdio_priv->hw = hw;
diff --git a/drivers/net/ethernet/freescale/enetc/enetc_mdio.c b/drivers/net/ethernet/freescale/enetc/enetc_mdio.c
index 1c8f5cc6dec4..998aaa394e9c 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc_mdio.c
+++ b/drivers/net/ethernet/freescale/enetc/enetc_mdio.c
@@ -55,7 +55,8 @@ static int enetc_mdio_wait_complete(struct enetc_mdio_priv *mdio_priv)
 				  is_busy, !is_busy, 10, 10 * 1000);
 }
 
-int enetc_mdio_write(struct mii_bus *bus, int phy_id, int regnum, u16 value)
+int enetc_mdio_write_c22(struct mii_bus *bus, int phy_id, int regnum,
+			 u16 value)
 {
 	struct enetc_mdio_priv *mdio_priv = bus->priv;
 	u32 mdio_ctl, mdio_cfg;
@@ -63,14 +64,39 @@ int enetc_mdio_write(struct mii_bus *bus, int phy_id, int regnum, u16 value)
 	int ret;
 
 	mdio_cfg = ENETC_EMDIO_CFG;
-	if (regnum & MII_ADDR_C45) {
-		dev_addr = (regnum >> 16) & 0x1f;
-		mdio_cfg |= MDIO_CFG_ENC45;
-	} else {
-		/* clause 22 (ie 1G) */
-		dev_addr = regnum & 0x1f;
-		mdio_cfg &= ~MDIO_CFG_ENC45;
-	}
+	dev_addr = regnum & 0x1f;
+	mdio_cfg &= ~MDIO_CFG_ENC45;
+
+	enetc_mdio_wr(mdio_priv, ENETC_MDIO_CFG, mdio_cfg);
+
+	ret = enetc_mdio_wait_complete(mdio_priv);
+	if (ret)
+		return ret;
+
+	/* set port and dev addr */
+	mdio_ctl = MDIO_CTL_PORT_ADDR(phy_id) | MDIO_CTL_DEV_ADDR(dev_addr);
+	enetc_mdio_wr(mdio_priv, ENETC_MDIO_CTL, mdio_ctl);
+
+	/* write the value */
+	enetc_mdio_wr(mdio_priv, ENETC_MDIO_DATA, value);
+
+	ret = enetc_mdio_wait_complete(mdio_priv);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(enetc_mdio_write_c22);
+
+int enetc_mdio_write_c45(struct mii_bus *bus, int phy_id, int dev_addr,
+			 int regnum, u16 value)
+{
+	struct enetc_mdio_priv *mdio_priv = bus->priv;
+	u32 mdio_ctl, mdio_cfg;
+	int ret;
+
+	mdio_cfg = ENETC_EMDIO_CFG;
+	mdio_cfg |= MDIO_CFG_ENC45;
 
 	enetc_mdio_wr(mdio_priv, ENETC_MDIO_CFG, mdio_cfg);
 
@@ -83,13 +109,11 @@ int enetc_mdio_write(struct mii_bus *bus, int phy_id, int regnum, u16 value)
 	enetc_mdio_wr(mdio_priv, ENETC_MDIO_CTL, mdio_ctl);
 
 	/* set the register address */
-	if (regnum & MII_ADDR_C45) {
-		enetc_mdio_wr(mdio_priv, ENETC_MDIO_ADDR, regnum & 0xffff);
+	enetc_mdio_wr(mdio_priv, ENETC_MDIO_ADDR, regnum & 0xffff);
 
-		ret = enetc_mdio_wait_complete(mdio_priv);
-		if (ret)
-			return ret;
-	}
+	ret = enetc_mdio_wait_complete(mdio_priv);
+	if (ret)
+		return ret;
 
 	/* write the value */
 	enetc_mdio_wr(mdio_priv, ENETC_MDIO_DATA, value);
@@ -100,9 +124,9 @@ int enetc_mdio_write(struct mii_bus *bus, int phy_id, int regnum, u16 value)
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(enetc_mdio_write);
+EXPORT_SYMBOL_GPL(enetc_mdio_write_c45);
 
-int enetc_mdio_read(struct mii_bus *bus, int phy_id, int regnum)
+int enetc_mdio_read_c22(struct mii_bus *bus, int phy_id, int regnum)
 {
 	struct enetc_mdio_priv *mdio_priv = bus->priv;
 	u32 mdio_ctl, mdio_cfg;
@@ -110,14 +134,51 @@ int enetc_mdio_read(struct mii_bus *bus, int phy_id, int regnum)
 	int ret;
 
 	mdio_cfg = ENETC_EMDIO_CFG;
-	if (regnum & MII_ADDR_C45) {
-		dev_addr = (regnum >> 16) & 0x1f;
-		mdio_cfg |= MDIO_CFG_ENC45;
-	} else {
-		dev_addr = regnum & 0x1f;
-		mdio_cfg &= ~MDIO_CFG_ENC45;
+	dev_addr = regnum & 0x1f;
+	mdio_cfg &= ~MDIO_CFG_ENC45;
+
+	enetc_mdio_wr(mdio_priv, ENETC_MDIO_CFG, mdio_cfg);
+
+	ret = enetc_mdio_wait_complete(mdio_priv);
+	if (ret)
+		return ret;
+
+	/* set port and device addr */
+	mdio_ctl = MDIO_CTL_PORT_ADDR(phy_id) | MDIO_CTL_DEV_ADDR(dev_addr);
+	enetc_mdio_wr(mdio_priv, ENETC_MDIO_CTL, mdio_ctl);
+
+	/* initiate the read */
+	enetc_mdio_wr(mdio_priv, ENETC_MDIO_CTL, mdio_ctl | MDIO_CTL_READ);
+
+	ret = enetc_mdio_wait_complete(mdio_priv);
+	if (ret)
+		return ret;
+
+	/* return all Fs if nothing was there */
+	if (enetc_mdio_rd(mdio_priv, ENETC_MDIO_CFG) & MDIO_CFG_RD_ER) {
+		dev_dbg(&bus->dev,
+			"Error while reading PHY%d reg at %d.%d\n",
+			phy_id, dev_addr, regnum);
+		return 0xffff;
 	}
 
+	value = enetc_mdio_rd(mdio_priv, ENETC_MDIO_DATA) & 0xffff;
+
+	return value;
+}
+EXPORT_SYMBOL_GPL(enetc_mdio_read_c22);
+
+int enetc_mdio_read_c45(struct mii_bus *bus, int phy_id, int dev_addr,
+			int regnum)
+{
+	struct enetc_mdio_priv *mdio_priv = bus->priv;
+	u32 mdio_ctl, mdio_cfg;
+	u16 value;
+	int ret;
+
+	mdio_cfg = ENETC_EMDIO_CFG;
+	mdio_cfg |= MDIO_CFG_ENC45;
+
 	enetc_mdio_wr(mdio_priv, ENETC_MDIO_CFG, mdio_cfg);
 
 	ret = enetc_mdio_wait_complete(mdio_priv);
@@ -129,13 +190,11 @@ int enetc_mdio_read(struct mii_bus *bus, int phy_id, int regnum)
 	enetc_mdio_wr(mdio_priv, ENETC_MDIO_CTL, mdio_ctl);
 
 	/* set the register address */
-	if (regnum & MII_ADDR_C45) {
-		enetc_mdio_wr(mdio_priv, ENETC_MDIO_ADDR, regnum & 0xffff);
+	enetc_mdio_wr(mdio_priv, ENETC_MDIO_ADDR, regnum & 0xffff);
 
-		ret = enetc_mdio_wait_complete(mdio_priv);
-		if (ret)
-			return ret;
-	}
+	ret = enetc_mdio_wait_complete(mdio_priv);
+	if (ret)
+		return ret;
 
 	/* initiate the read */
 	enetc_mdio_wr(mdio_priv, ENETC_MDIO_CTL, mdio_ctl | MDIO_CTL_READ);
@@ -156,7 +215,7 @@ int enetc_mdio_read(struct mii_bus *bus, int phy_id, int regnum)
 
 	return value;
 }
-EXPORT_SYMBOL_GPL(enetc_mdio_read);
+EXPORT_SYMBOL_GPL(enetc_mdio_read_c45);
 
 struct enetc_hw *enetc_hw_alloc(struct device *dev, void __iomem *port_regs)
 {
diff --git a/drivers/net/ethernet/freescale/enetc/enetc_pci_mdio.c b/drivers/net/ethernet/freescale/enetc/enetc_pci_mdio.c
index dafb26f81f95..a1b595bd7993 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc_pci_mdio.c
+++ b/drivers/net/ethernet/freescale/enetc/enetc_pci_mdio.c
@@ -39,8 +39,10 @@ static int enetc_pci_mdio_probe(struct pci_dev *pdev,
 	}
 
 	bus->name = ENETC_MDIO_BUS_NAME;
-	bus->read = enetc_mdio_read;
-	bus->write = enetc_mdio_write;
+	bus->read = enetc_mdio_read_c22;
+	bus->write = enetc_mdio_write_c22;
+	bus->read_c45 = enetc_mdio_read_c45;
+	bus->write_c45 = enetc_mdio_write_c45;
 	bus->parent = dev;
 	mdio_priv = bus->priv;
 	mdio_priv->hw = hw;
diff --git a/drivers/net/ethernet/freescale/enetc/enetc_pf.c b/drivers/net/ethernet/freescale/enetc/enetc_pf.c
index 9f6c4f5c0a6c..bc012deedab4 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc_pf.c
+++ b/drivers/net/ethernet/freescale/enetc/enetc_pf.c
@@ -848,8 +848,10 @@ static int enetc_mdio_probe(struct enetc_pf *pf, struct device_node *np)
 		return -ENOMEM;
 
 	bus->name = "Freescale ENETC MDIO Bus";
-	bus->read = enetc_mdio_read;
-	bus->write = enetc_mdio_write;
+	bus->read = enetc_mdio_read_c22;
+	bus->write = enetc_mdio_write_c22;
+	bus->read_c45 = enetc_mdio_read_c45;
+	bus->write_c45 = enetc_mdio_write_c45;
 	bus->parent = dev;
 	mdio_priv = bus->priv;
 	mdio_priv->hw = &pf->si->hw;
@@ -885,8 +887,10 @@ static int enetc_imdio_create(struct enetc_pf *pf)
 		return -ENOMEM;
 
 	bus->name = "Freescale ENETC internal MDIO Bus";
-	bus->read = enetc_mdio_read;
-	bus->write = enetc_mdio_write;
+	bus->read = enetc_mdio_read_c22;
+	bus->write = enetc_mdio_write_c22;
+	bus->read_c45 = enetc_mdio_read_c45;
+	bus->write_c45 = enetc_mdio_write_c45;
 	bus->parent = dev;
 	bus->phy_mask = ~0;
 	mdio_priv = bus->priv;
diff --git a/include/linux/fsl/enetc_mdio.h b/include/linux/fsl/enetc_mdio.h
index 2d9203314865..df25fffdc0ae 100644
--- a/include/linux/fsl/enetc_mdio.h
+++ b/include/linux/fsl/enetc_mdio.h
@@ -37,16 +37,27 @@ struct enetc_mdio_priv {
 
 #if IS_REACHABLE(CONFIG_FSL_ENETC_MDIO)
 
-int enetc_mdio_read(struct mii_bus *bus, int phy_id, int regnum);
-int enetc_mdio_write(struct mii_bus *bus, int phy_id, int regnum, u16 value);
+int enetc_mdio_read_c22(struct mii_bus *bus, int phy_id, int regnum);
+int enetc_mdio_write_c22(struct mii_bus *bus, int phy_id, int regnum,
+			 u16 value);
+int enetc_mdio_read_c45(struct mii_bus *bus, int phy_id, int devad, int regnum);
+int enetc_mdio_write_c45(struct mii_bus *bus, int phy_id, int devad, int regnum,
+			 u16 value);
 struct enetc_hw *enetc_hw_alloc(struct device *dev, void __iomem *port_regs);
 
 #else
 
-static inline int enetc_mdio_read(struct mii_bus *bus, int phy_id, int regnum)
+static inline int enetc_mdio_read_c22(struct mii_bus *bus, int phy_id,
+				      int regnum)
 { return -EINVAL; }
-static inline int enetc_mdio_write(struct mii_bus *bus, int phy_id, int regnum,
-				   u16 value)
+static inline int enetc_mdio_write_c22(struct mii_bus *bus, int phy_id,
+				       int regnum, u16 value)
+{ return -EINVAL; }
+static inline int enetc_mdio_read_c45(struct mii_bus *bus, int phy_id,
+				      int devad, int regnum)
+{ return -EINVAL; }
+static inline int enetc_mdio_write_c45(struct mii_bus *bus, int phy_id,
+				       int devad, int regnum, u16 value)
 { return -EINVAL; }
 struct enetc_hw *enetc_hw_alloc(struct device *dev, void __iomem *port_regs)
 { return ERR_PTR(-EINVAL); }

-- 
2.30.2

Re: [PATCH net-next 03/10] net: mdio: mux-bcm-iproc: Separate C22 and C45 transactions

[Florian Fainelli]

On 1/12/23 07:15, Michael Walle wrote:
> From: Andrew Lunn <andrew@lunn.ch>
> 
> The MDIO mux broadcom iproc can perform both C22 and C45 transfers.
> Create separate functions for each and register the C45 versions using
> the new API calls.
> 
> Signed-off-by: Andrew Lunn <andrew@lunn.ch>
> Signed-off-by: Michael Walle <michael@walle.cc>
> ---
> Apparently, in the c45 case, the reg value including the MII_ADDR_C45
> bit is written to the hardware. Looks weird, that a "random" software
> bit is written to a register. Florian is that correct? Also, with this
> patch this flag isn't set anymore.

We should be masking the MII_ADDR_C45 bit because the MDIO_ADDR_OFFSET 
only defines bits 0 through 20 as being read/write and bits above being 
read-only. In practice, this is probably not making any difference or harm.
-- 
Florian

Re: [PATCH net-next 00/10] net: mdio: Continue separating C22 and C45

[patchwork-bot+netdevbpf]

Hello:

This series was applied to netdev/net-next.git (master)
by Jakub Kicinski <kuba@kernel.org>:

On Thu, 12 Jan 2023 16:15:07 +0100 you wrote:
> I've picked this older series from Andrew up and rebased it onto
> the latest net-next.
> 
> This is the second patch set in the series which separates the C22
> and C45 MDIO bus transactions at the API level to the MDIO bus drivers.
> 
> Signed-off-by: Michael Walle <michael@walle.cc>
> 
> [...]

Here is the summary with links:
  - [net-next,01/10] net: mdio: cavium: Separate C22 and C45 transactions
    https://git.kernel.org/netdev/net-next/c/93641ecbaa1f
  - [net-next,02/10] net: mdio: i2c: Separate C22 and C45 transactions
    https://git.kernel.org/netdev/net-next/c/87e3bee0f247
  - [net-next,03/10] net: mdio: mux-bcm-iproc: Separate C22 and C45 transactions
    https://git.kernel.org/netdev/net-next/c/d544a25930a7
  - [net-next,04/10] net: mdio: aspeed: Separate C22 and C45 transactions
    https://git.kernel.org/netdev/net-next/c/c3c497eb8b24
  - [net-next,05/10] net: mdio: ipq4019: Separate C22 and C45 transactions
    https://git.kernel.org/netdev/net-next/c/c58e39942adf
  - [net-next,06/10] net: ethernet: mtk_eth_soc: Separate C22 and C45 transactions
    https://git.kernel.org/netdev/net-next/c/900888374e73
  - [net-next,07/10] net: lan743x: Separate C22 and C45 transactions
    https://git.kernel.org/netdev/net-next/c/3d90c03cb416
  - [net-next,08/10] net: stmmac: Separate C22 and C45 transactions for xgmac2
    https://git.kernel.org/netdev/net-next/c/5b0a447efff5
  - [net-next,09/10] net: stmmac: Separate C22 and C45 transactions for xgmac
    https://git.kernel.org/netdev/net-next/c/3c7826d0b106
  - [net-next,10/10] enetc: Separate C22 and C45 transactions
    https://git.kernel.org/netdev/net-next/c/80e87442e69b

You are awesome, thank you!
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