linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Daniel Golle <daniel@makrotopia.org>
To: netdev@vger.kernel.org, linux-mediatek@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org, linux@armlinux.org.uk,
	linux-kernel@vger.kernel.org, "Andrew Lunn" <andrew@lunn.ch>,
	"Arınç Ünal" <arinc.unal@arinc9.com>,
	"Florian Fainelli" <f.fainelli@gmail.com>,
	"Vladimir Oltean" <olteanv@gmail.com>,
	"David S. Miller" <davem@davemloft.net>,
	"Eric Dumazet" <edumazet@google.com>,
	"Jakub Kicinski" <kuba@kernel.org>,
	"Paolo Abeni" <pabeni@redhat.com>,
	"Matthias Brugger" <matthias.bgg@gmail.com>,
	"AngeloGioacchino Del Regno"
	<angelogioacchino.delregno@collabora.com>,
	"Sean Wang" <sean.wang@mediatek.com>,
	"Landen Chao" <Landen.Chao@mediatek.com>,
	"DENG Qingfang" <dqfext@gmail.com>,
	"Philipp Zabel" <p.zabel@pengutronix.de>
Cc: Sam Shih <Sam.Shih@mediatek.com>,
	Lorenzo Bianconi <lorenzo@kernel.org>,
	John Crispin <john@phrozen.org>, Felix Fietkau <nbd@nbd.name>
Subject: [PATCH net-next 06/15] net: dsa: mt7530: introduce mutex helpers
Date: Thu, 30 Mar 2023 16:21:21 +0100	[thread overview]
Message-ID: <db4fb5f173335cf76f51c255eee3102d060c19ae.1680180959.git.daniel@makrotopia.org> (raw)
In-Reply-To: <cover.1680180959.git.daniel@makrotopia.org>

As the MDIO bus lock only needs to be involved if actually operating
on an MDIO-connected switch we will need to skip locking for built-in
switches which are accessed via MMIO.
Create helper functions which simplify that upcoming change.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
---
 drivers/net/dsa/mt7530.c | 72 ++++++++++++++++++++--------------------
 1 file changed, 36 insertions(+), 36 deletions(-)

diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
index 803809b430c85..4fed18303673e 100644
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -143,31 +143,40 @@ core_write_mmd_indirect(struct mt7530_priv *priv, int prtad,
 }
 
 static void
-core_write(struct mt7530_priv *priv, u32 reg, u32 val)
+mt7530_mutex_lock(struct mt7530_priv *priv)
 {
-	struct mii_bus *bus = priv->bus;
+	mutex_lock_nested(&priv->bus->mdio_lock, MDIO_MUTEX_NESTED);
+}
 
-	mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
+static void
+mt7530_mutex_unlock(struct mt7530_priv *priv)
+{
+	mutex_unlock(&priv->bus->mdio_lock);
+}
+
+static void
+core_write(struct mt7530_priv *priv, u32 reg, u32 val)
+{
+	mt7530_mutex_lock(priv);
 
 	core_write_mmd_indirect(priv, reg, MDIO_MMD_VEND2, val);
 
-	mutex_unlock(&bus->mdio_lock);
+	mt7530_mutex_unlock(priv);
 }
 
 static void
 core_rmw(struct mt7530_priv *priv, u32 reg, u32 mask, u32 set)
 {
-	struct mii_bus *bus = priv->bus;
 	u32 val;
 
-	mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
+	mt7530_mutex_lock(priv);
 
 	val = core_read_mmd_indirect(priv, reg, MDIO_MMD_VEND2);
 	val &= ~mask;
 	val |= set;
 	core_write_mmd_indirect(priv, reg, MDIO_MMD_VEND2, val);
 
-	mutex_unlock(&bus->mdio_lock);
+	mt7530_mutex_unlock(priv);
 }
 
 static void
@@ -264,13 +273,11 @@ mt7530_mii_read(struct mt7530_priv *priv, u32 reg)
 static void
 mt7530_write(struct mt7530_priv *priv, u32 reg, u32 val)
 {
-	struct mii_bus *bus = priv->bus;
-
-	mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
+	mt7530_mutex_lock(priv);
 
 	mt7530_mii_write(priv, reg, val);
 
-	mutex_unlock(&bus->mdio_lock);
+	mt7530_mutex_unlock(priv);
 }
 
 static u32
@@ -282,14 +289,13 @@ _mt7530_unlocked_read(struct mt7530_dummy_poll *p)
 static u32
 _mt7530_read(struct mt7530_dummy_poll *p)
 {
-	struct mii_bus		*bus = p->priv->bus;
 	u32 val;
 
-	mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
+	mt7530_mutex_lock(p->priv);
 
 	val = mt7530_mii_read(p->priv, p->reg);
 
-	mutex_unlock(&bus->mdio_lock);
+	mt7530_mutex_unlock(p->priv);
 
 	return val;
 }
@@ -307,17 +313,16 @@ static void
 mt7530_rmw(struct mt7530_priv *priv, u32 reg,
 	   u32 mask, u32 set)
 {
-	struct mii_bus *bus = priv->bus;
 	u32 val;
 
-	mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
+	mt7530_mutex_lock(priv);
 
 	val = mt7530_mii_read(priv, reg);
 	val &= ~mask;
 	val |= set;
 	mt7530_mii_write(priv, reg, val);
 
-	mutex_unlock(&bus->mdio_lock);
+	mt7530_mutex_unlock(priv);
 }
 
 static void
@@ -661,14 +666,13 @@ static int
 mt7531_ind_c45_phy_read(struct mt7530_priv *priv, int port, int devad,
 			int regnum)
 {
-	struct mii_bus *bus = priv->bus;
 	struct mt7530_dummy_poll p;
 	u32 reg, val;
 	int ret;
 
 	INIT_MT7530_DUMMY_POLL(&p, priv, MT7531_PHY_IAC);
 
-	mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
+	mt7530_mutex_lock(priv);
 
 	ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
 				 !(val & MT7531_PHY_ACS_ST), 20, 100000);
@@ -701,7 +705,7 @@ mt7531_ind_c45_phy_read(struct mt7530_priv *priv, int port, int devad,
 
 	ret = val & MT7531_MDIO_RW_DATA_MASK;
 out:
-	mutex_unlock(&bus->mdio_lock);
+	mt7530_mutex_unlock(priv);
 
 	return ret;
 }
@@ -710,14 +714,13 @@ static int
 mt7531_ind_c45_phy_write(struct mt7530_priv *priv, int port, int devad,
 			 int regnum, u16 data)
 {
-	struct mii_bus *bus = priv->bus;
 	struct mt7530_dummy_poll p;
 	u32 val, reg;
 	int ret;
 
 	INIT_MT7530_DUMMY_POLL(&p, priv, MT7531_PHY_IAC);
 
-	mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
+	mt7530_mutex_lock(priv);
 
 	ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
 				 !(val & MT7531_PHY_ACS_ST), 20, 100000);
@@ -749,7 +752,7 @@ mt7531_ind_c45_phy_write(struct mt7530_priv *priv, int port, int devad,
 	}
 
 out:
-	mutex_unlock(&bus->mdio_lock);
+	mt7530_mutex_unlock(priv);
 
 	return ret;
 }
@@ -757,14 +760,13 @@ mt7531_ind_c45_phy_write(struct mt7530_priv *priv, int port, int devad,
 static int
 mt7531_ind_c22_phy_read(struct mt7530_priv *priv, int port, int regnum)
 {
-	struct mii_bus *bus = priv->bus;
 	struct mt7530_dummy_poll p;
 	int ret;
 	u32 val;
 
 	INIT_MT7530_DUMMY_POLL(&p, priv, MT7531_PHY_IAC);
 
-	mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
+	mt7530_mutex_lock(priv);
 
 	ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
 				 !(val & MT7531_PHY_ACS_ST), 20, 100000);
@@ -787,7 +789,7 @@ mt7531_ind_c22_phy_read(struct mt7530_priv *priv, int port, int regnum)
 
 	ret = val & MT7531_MDIO_RW_DATA_MASK;
 out:
-	mutex_unlock(&bus->mdio_lock);
+	mt7530_mutex_unlock(priv);
 
 	return ret;
 }
@@ -796,14 +798,13 @@ static int
 mt7531_ind_c22_phy_write(struct mt7530_priv *priv, int port, int regnum,
 			 u16 data)
 {
-	struct mii_bus *bus = priv->bus;
 	struct mt7530_dummy_poll p;
 	int ret;
 	u32 reg;
 
 	INIT_MT7530_DUMMY_POLL(&p, priv, MT7531_PHY_IAC);
 
-	mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
+	mt7530_mutex_lock(priv);
 
 	ret = readx_poll_timeout(_mt7530_unlocked_read, &p, reg,
 				 !(reg & MT7531_PHY_ACS_ST), 20, 100000);
@@ -825,7 +826,7 @@ mt7531_ind_c22_phy_write(struct mt7530_priv *priv, int port, int regnum,
 	}
 
 out:
-	mutex_unlock(&bus->mdio_lock);
+	mt7530_mutex_unlock(priv);
 
 	return ret;
 }
@@ -1106,7 +1107,6 @@ static int
 mt7530_port_change_mtu(struct dsa_switch *ds, int port, int new_mtu)
 {
 	struct mt7530_priv *priv = ds->priv;
-	struct mii_bus *bus = priv->bus;
 	int length;
 	u32 val;
 
@@ -1117,7 +1117,7 @@ mt7530_port_change_mtu(struct dsa_switch *ds, int port, int new_mtu)
 	if (!dsa_is_cpu_port(ds, port))
 		return 0;
 
-	mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
+	mt7530_mutex_lock(priv);
 
 	val = mt7530_mii_read(priv, MT7530_GMACCR);
 	val &= ~MAX_RX_PKT_LEN_MASK;
@@ -1138,7 +1138,7 @@ mt7530_port_change_mtu(struct dsa_switch *ds, int port, int new_mtu)
 
 	mt7530_mii_write(priv, MT7530_GMACCR, val);
 
-	mutex_unlock(&bus->mdio_lock);
+	mt7530_mutex_unlock(priv);
 
 	return 0;
 }
@@ -1939,10 +1939,10 @@ mt7530_irq_thread_fn(int irq, void *dev_id)
 	u32 val;
 	int p;
 
-	mutex_lock_nested(&priv->bus->mdio_lock, MDIO_MUTEX_NESTED);
+	mt7530_mutex_lock(priv);
 	val = mt7530_mii_read(priv, MT7530_SYS_INT_STS);
 	mt7530_mii_write(priv, MT7530_SYS_INT_STS, val);
-	mutex_unlock(&priv->bus->mdio_lock);
+	mt7530_mutex_unlock(priv);
 
 	for (p = 0; p < MT7530_NUM_PHYS; p++) {
 		if (BIT(p) & val) {
@@ -1978,7 +1978,7 @@ mt7530_irq_bus_lock(struct irq_data *d)
 {
 	struct mt7530_priv *priv = irq_data_get_irq_chip_data(d);
 
-	mutex_lock_nested(&priv->bus->mdio_lock, MDIO_MUTEX_NESTED);
+	mt7530_mutex_lock(priv);
 }
 
 static void
@@ -1987,7 +1987,7 @@ mt7530_irq_bus_sync_unlock(struct irq_data *d)
 	struct mt7530_priv *priv = irq_data_get_irq_chip_data(d);
 
 	mt7530_mii_write(priv, MT7530_SYS_INT_EN, priv->irq_enable);
-	mutex_unlock(&priv->bus->mdio_lock);
+	mt7530_mutex_unlock(priv);
 }
 
 static struct irq_chip mt7530_irq_chip = {
-- 
2.39.2


  parent reply	other threads:[~2023-03-30 15:23 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-03-30 15:19 [PATCH net-next 00/15] net: dsa: add support for MT7988 Daniel Golle
2023-03-30 15:19 ` [PATCH net-next 01/15] net: dsa: mt7530: make some noise if register read fails Daniel Golle
2023-03-30 20:58   ` Andrew Lunn
2023-03-30 15:19 ` [PATCH net-next 02/15] net: dsa: mt7530: refactor SGMII PCS creation Daniel Golle
2023-03-30 20:59   ` Andrew Lunn
2023-03-30 15:20 ` [PATCH net-next 03/15] net: dsa: mt7530: use unlocked regmap accessors Daniel Golle
2023-03-30 21:01   ` Andrew Lunn
2023-03-30 15:20 ` [PATCH net-next 04/15] net: dsa: mt7530: use regmap to access switch register space Daniel Golle
2023-03-30 21:02   ` Andrew Lunn
2023-03-31  2:28   ` Daniel Golle
2023-03-30 15:21 ` [PATCH net-next 05/15] net: dsa: mt7530: move SGMII PCS creation to mt7530_probe function Daniel Golle
2023-03-30 21:02   ` Andrew Lunn
2023-03-30 15:21 ` Daniel Golle [this message]
2023-03-30 15:21 ` [PATCH net-next 07/15] net: dsa: mt7530: move p5_intf_modes() function to mt7530.c Daniel Golle
2023-03-30 15:22 ` [PATCH net-next 08/15] net: dsa: mt7530: introduce mt7530_probe_common helper function Daniel Golle
2023-03-30 15:22 ` [PATCH net-next 09/15] net: dsa: mt7530: introduce mt7530_remove_common " Daniel Golle
2023-03-30 15:22 ` [PATCH net-next 10/15] net: dsa: mt7530: split-off common parts from mt7531_setup Daniel Golle
2023-03-30 15:22 ` [PATCH net-next 11/15] net: dsa: mt7530: introduce separate MDIO driver Daniel Golle
2023-03-30 15:23 ` [PATCH net-next 12/15] net: dsa: mt7530: skip locking if MDIO bus isn't present Daniel Golle
2023-03-30 15:23 ` [PATCH net-next 13/15] net: dsa: mt7530: add support for 10G link modes for CPU port Daniel Golle
2023-04-01  8:56   ` Arınç ÜNAL
2023-04-01 13:05     ` Daniel Golle
2023-03-30 15:23 ` [PATCH net-next 14/15] net: dsa: mt7530: introduce driver for MT7988 built-in switch Daniel Golle
2023-03-30 21:03   ` Andrew Lunn
2023-03-31  5:50   ` Arınç ÜNAL
2023-03-31 10:16     ` Daniel Golle
2023-03-31 12:06       ` Arınç ÜNAL
2023-03-31 12:45         ` Andrew Lunn
2023-03-31 13:18         ` Arınç ÜNAL
2023-03-31 13:19           ` Arınç ÜNAL
2023-03-31 14:10           ` Daniel Golle
2023-03-31 14:11             ` Arınç ÜNAL
2023-03-31 20:07           ` Arınç ÜNAL
2023-03-31 20:33             ` Daniel Golle
2023-04-01  8:05         ` Luiz Angelo Daros de Luca
2023-03-30 15:23 ` [PATCH 15/15] dt-bindings: net: dsa: mediatek,mt7530: add mediatek,mt7988-switch Daniel Golle
2023-03-31  5:27   ` Arınç ÜNAL
2023-04-03 18:23     ` Daniel Golle
2023-03-31  5:27 ` [PATCH net-next 00/15] net: dsa: add support for MT7988 Arınç ÜNAL

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=db4fb5f173335cf76f51c255eee3102d060c19ae.1680180959.git.daniel@makrotopia.org \
    --to=daniel@makrotopia.org \
    --cc=Landen.Chao@mediatek.com \
    --cc=Sam.Shih@mediatek.com \
    --cc=andrew@lunn.ch \
    --cc=angelogioacchino.delregno@collabora.com \
    --cc=arinc.unal@arinc9.com \
    --cc=davem@davemloft.net \
    --cc=dqfext@gmail.com \
    --cc=edumazet@google.com \
    --cc=f.fainelli@gmail.com \
    --cc=john@phrozen.org \
    --cc=kuba@kernel.org \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mediatek@lists.infradead.org \
    --cc=linux@armlinux.org.uk \
    --cc=lorenzo@kernel.org \
    --cc=matthias.bgg@gmail.com \
    --cc=nbd@nbd.name \
    --cc=netdev@vger.kernel.org \
    --cc=olteanv@gmail.com \
    --cc=p.zabel@pengutronix.de \
    --cc=pabeni@redhat.com \
    --cc=sean.wang@mediatek.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).