From: Michael Walle <michael@walle.cc>
To: Heiner Kallweit <hkallweit1@gmail.com>,
Russell King <linux@armlinux.org.uk>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Jose Abreu <Jose.Abreu@synopsys.com>,
Sergey Shtylyov <s.shtylyov@omp.ru>, Wei Fang <wei.fang@nxp.com>,
Shenwei Wang <shenwei.wang@nxp.com>,
Clark Wang <xiaoning.wang@nxp.com>,
NXP Linux Team <linux-imx@nxp.com>,
Sean Wang <sean.wang@mediatek.com>,
Landen Chao <Landen.Chao@mediatek.com>,
DENG Qingfang <dqfext@gmail.com>,
Florian Fainelli <f.fainelli@gmail.com>,
Vladimir Oltean <olteanv@gmail.com>,
Matthias Brugger <matthias.bgg@gmail.com>
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-renesas-soc@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org, Andrew Lunn <andrew@lunn.ch>,
Geert Uytterhoeven <geert+renesas@glider.be>,
Michael Walle <michael@walle.cc>
Subject: [PATCH RFC net-next v2 09/12] net: ethernet: freescale: fec: Separate C22 and C45 transactions for xgmac
Date: Wed, 28 Dec 2022 00:07:25 +0100 [thread overview]
Message-ID: <20221227-v6-2-rc1-c45-seperation-v2-9-ddb37710e5a7@walle.cc> (raw)
In-Reply-To: <20221227-v6-2-rc1-c45-seperation-v2-0-ddb37710e5a7@walle.cc>
From: Andrew Lunn <andrew@lunn.ch>
The fec 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>
---
v2:
- [al] Fixup some indentation
---
drivers/net/ethernet/freescale/fec_main.c | 153 ++++++++++++++++++++----------
1 file changed, 103 insertions(+), 50 deletions(-)
diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index 644f3c963730..e6238e53940d 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -1987,47 +1987,74 @@ static int fec_enet_mdio_wait(struct fec_enet_private *fep)
return ret;
}
-static int fec_enet_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
+static int fec_enet_mdio_read_c22(struct mii_bus *bus, int mii_id, int regnum)
{
struct fec_enet_private *fep = bus->priv;
struct device *dev = &fep->pdev->dev;
int ret = 0, frame_start, frame_addr, frame_op;
- bool is_c45 = !!(regnum & MII_ADDR_C45);
ret = pm_runtime_resume_and_get(dev);
if (ret < 0)
return ret;
- if (is_c45) {
- frame_start = FEC_MMFR_ST_C45;
+ /* C22 read */
+ frame_op = FEC_MMFR_OP_READ;
+ frame_start = FEC_MMFR_ST;
+ frame_addr = regnum;
- /* write address */
- frame_addr = (regnum >> 16);
- writel(frame_start | FEC_MMFR_OP_ADDR_WRITE |
- FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(frame_addr) |
- FEC_MMFR_TA | (regnum & 0xFFFF),
- fep->hwp + FEC_MII_DATA);
+ /* start a read op */
+ writel(frame_start | frame_op |
+ FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(frame_addr) |
+ FEC_MMFR_TA, fep->hwp + FEC_MII_DATA);
- /* wait for end of transfer */
- ret = fec_enet_mdio_wait(fep);
- if (ret) {
- netdev_err(fep->netdev, "MDIO address write timeout\n");
- goto out;
- }
+ /* wait for end of transfer */
+ ret = fec_enet_mdio_wait(fep);
+ if (ret) {
+ netdev_err(fep->netdev, "MDIO read timeout\n");
+ goto out;
+ }
- frame_op = FEC_MMFR_OP_READ_C45;
+ ret = FEC_MMFR_DATA(readl(fep->hwp + FEC_MII_DATA));
- } else {
- /* C22 read */
- frame_op = FEC_MMFR_OP_READ;
- frame_start = FEC_MMFR_ST;
- frame_addr = regnum;
+out:
+ pm_runtime_mark_last_busy(dev);
+ pm_runtime_put_autosuspend(dev);
+
+ return ret;
+}
+
+static int fec_enet_mdio_read_c45(struct mii_bus *bus, int mii_id,
+ int devad, int regnum)
+{
+ struct fec_enet_private *fep = bus->priv;
+ struct device *dev = &fep->pdev->dev;
+ int ret = 0, frame_start, frame_op;
+
+ ret = pm_runtime_resume_and_get(dev);
+ if (ret < 0)
+ return ret;
+
+ frame_start = FEC_MMFR_ST_C45;
+
+ /* write address */
+ writel(frame_start | FEC_MMFR_OP_ADDR_WRITE |
+ FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(devad) |
+ FEC_MMFR_TA | (regnum & 0xFFFF),
+ fep->hwp + FEC_MII_DATA);
+
+ /* wait for end of transfer */
+ ret = fec_enet_mdio_wait(fep);
+ if (ret) {
+ netdev_err(fep->netdev, "MDIO address write timeout\n");
+ goto out;
}
+ frame_op = FEC_MMFR_OP_READ_C45;
+
/* start a read op */
writel(frame_start | frame_op |
- FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(frame_addr) |
- FEC_MMFR_TA, fep->hwp + FEC_MII_DATA);
+ FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(devad) |
+ FEC_MMFR_TA, fep->hwp + FEC_MII_DATA);
/* wait for end of transfer */
ret = fec_enet_mdio_wait(fep);
@@ -2045,45 +2072,69 @@ static int fec_enet_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
return ret;
}
-static int fec_enet_mdio_write(struct mii_bus *bus, int mii_id, int regnum,
- u16 value)
+static int fec_enet_mdio_write_c22(struct mii_bus *bus, int mii_id, int regnum,
+ u16 value)
{
struct fec_enet_private *fep = bus->priv;
struct device *dev = &fep->pdev->dev;
int ret, frame_start, frame_addr;
- bool is_c45 = !!(regnum & MII_ADDR_C45);
ret = pm_runtime_resume_and_get(dev);
if (ret < 0)
return ret;
- if (is_c45) {
- frame_start = FEC_MMFR_ST_C45;
+ /* C22 write */
+ frame_start = FEC_MMFR_ST;
+ frame_addr = regnum;
- /* write address */
- frame_addr = (regnum >> 16);
- writel(frame_start | FEC_MMFR_OP_ADDR_WRITE |
- FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(frame_addr) |
- FEC_MMFR_TA | (regnum & 0xFFFF),
- fep->hwp + FEC_MII_DATA);
+ /* start a write op */
+ writel(frame_start | FEC_MMFR_OP_WRITE |
+ FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(frame_addr) |
+ FEC_MMFR_TA | FEC_MMFR_DATA(value),
+ fep->hwp + FEC_MII_DATA);
- /* wait for end of transfer */
- ret = fec_enet_mdio_wait(fep);
- if (ret) {
- netdev_err(fep->netdev, "MDIO address write timeout\n");
- goto out;
- }
- } else {
- /* C22 write */
- frame_start = FEC_MMFR_ST;
- frame_addr = regnum;
+ /* wait for end of transfer */
+ ret = fec_enet_mdio_wait(fep);
+ if (ret)
+ netdev_err(fep->netdev, "MDIO write timeout\n");
+
+ pm_runtime_mark_last_busy(dev);
+ pm_runtime_put_autosuspend(dev);
+
+ return ret;
+}
+
+static int fec_enet_mdio_write_c45(struct mii_bus *bus, int mii_id,
+ int devad, int regnum, u16 value)
+{
+ struct fec_enet_private *fep = bus->priv;
+ struct device *dev = &fep->pdev->dev;
+ int ret, frame_start;
+
+ ret = pm_runtime_resume_and_get(dev);
+ if (ret < 0)
+ return ret;
+
+ frame_start = FEC_MMFR_ST_C45;
+
+ /* write address */
+ writel(frame_start | FEC_MMFR_OP_ADDR_WRITE |
+ FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(devad) |
+ FEC_MMFR_TA | (regnum & 0xFFFF),
+ fep->hwp + FEC_MII_DATA);
+
+ /* wait for end of transfer */
+ ret = fec_enet_mdio_wait(fep);
+ if (ret) {
+ netdev_err(fep->netdev, "MDIO address write timeout\n");
+ goto out;
}
/* start a write op */
writel(frame_start | FEC_MMFR_OP_WRITE |
- FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(frame_addr) |
- FEC_MMFR_TA | FEC_MMFR_DATA(value),
- fep->hwp + FEC_MII_DATA);
+ FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(devad) |
+ FEC_MMFR_TA | FEC_MMFR_DATA(value),
+ fep->hwp + FEC_MII_DATA);
/* wait for end of transfer */
ret = fec_enet_mdio_wait(fep);
@@ -2381,8 +2432,10 @@ static int fec_enet_mii_init(struct platform_device *pdev)
}
fep->mii_bus->name = "fec_enet_mii_bus";
- fep->mii_bus->read = fec_enet_mdio_read;
- fep->mii_bus->write = fec_enet_mdio_write;
+ fep->mii_bus->read = fec_enet_mdio_read_c22;
+ fep->mii_bus->write = fec_enet_mdio_write_c22;
+ fep->mii_bus->read_c45 = fec_enet_mdio_read_c45;
+ fep->mii_bus->write_c45 = fec_enet_mdio_write_c45;
snprintf(fep->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x",
pdev->name, fep->dev_id + 1);
fep->mii_bus->priv = fep;
--
2.30.2
next prev parent reply other threads:[~2022-12-27 23:08 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-27 23:07 [PATCH RFC net-next v2 00/12] net: mdio: Start separating C22 and C45 Michael Walle
2022-12-27 23:07 ` [PATCH RFC net-next v2 01/12] net: mdio: Add dedicated C45 API to MDIO bus drivers Michael Walle
2022-12-27 23:07 ` [PATCH RFC net-next v2 02/12] net: pcs: pcs-xpcs: Use C45 MDIO API Michael Walle
2023-01-03 13:28 ` Vladimir Oltean
2022-12-27 23:07 ` [PATCH RFC net-next v2 03/12] net: mdio: mdiobus_register: update validation test Michael Walle
2023-01-03 10:13 ` Russell King (Oracle)
2023-01-03 10:21 ` Michael Walle
2023-01-03 22:19 ` Russell King (Oracle)
2023-01-09 12:35 ` Michael Walle
2023-01-09 12:41 ` Vladimir Oltean
2022-12-27 23:07 ` [PATCH RFC net-next v2 04/12] net: mdio: C22 is now optional, EOPNOTSUPP if not provided Michael Walle
2022-12-27 23:07 ` [PATCH RFC net-next v2 05/12] net: mdio: Move mdiobus_c45_addr() next to users Michael Walle
2022-12-27 23:07 ` [PATCH RFC net-next v2 06/12] net: mdio: mdio-bitbang: Separate C22 and C45 transactions Michael Walle
2023-01-03 13:15 ` Vladimir Oltean
2023-01-03 13:27 ` Michael Walle
2022-12-27 23:07 ` [PATCH RFC net-next v2 07/12] net: mdio: mvmdio: Convert XSMI bus to new API Michael Walle
2022-12-27 23:07 ` [PATCH RFC net-next v2 08/12] net: ethernet: freescale: xgmac: Separate C22 and C45 transactions for xgmac Michael Walle
2023-01-03 13:55 ` Vladimir Oltean
2022-12-27 23:07 ` Michael Walle [this message]
2022-12-28 3:31 ` [PATCH RFC net-next v2 09/12] net: ethernet: freescale: fec: " Wei Fang
2023-01-03 13:57 ` Vladimir Oltean
2022-12-27 23:07 ` [PATCH RFC net-next v2 10/12] net: mdio: add mdiobus_c45_read/write_nested helpers Michael Walle
2022-12-27 23:07 ` [PATCH RFC net-next v2 11/12] net: dsa: Separate C22 and C45 MDIO bus transaction methods Michael Walle
2023-01-03 15:31 ` Vladimir Oltean
2023-01-03 15:48 ` Andrew Lunn
2023-01-03 15:56 ` Vladimir Oltean
2023-01-16 7:51 ` Michael Walle
2023-01-16 19:28 ` Vladimir Oltean
2022-12-27 23:07 ` [PATCH RFC net-next v2 12/12] net: dsa: mv88e6xxx: Separate C22 and C45 transactions Michael Walle
2023-01-03 16:20 ` Vladimir Oltean
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