From: Florian Fainelli <f.fainelli@gmail.com>
To: netdev@vger.kernel.org
Cc: Florian Fainelli <f.fainelli@gmail.com>,
Andrew Lunn <andrew@lunn.ch>,
Vivien Didelot <vivien.didelot@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>,
linux-kernel@vger.kernel.org (open list)
Subject: [RFC net-next 1/2] net: dsa: bcm_sf2: Introduce helper for port override offset
Date: Mon, 25 Jul 2022 14:49:41 -0700 [thread overview]
Message-ID: <20220725214942.97207-2-f.fainelli@gmail.com> (raw)
In-Reply-To: <20220725214942.97207-1-f.fainelli@gmail.com>
Depending upon the generation of switches, we have different offsets for
configuring a given port's status override where link parameters are
applied. Introduce a helper function that we re-use throughout the code
in order to let phylink callbacks configure the IMP/CPU port(s) in
subsequent changes.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
drivers/net/dsa/bcm_sf2.c | 37 +++++++++++++++++++++----------------
1 file changed, 21 insertions(+), 16 deletions(-)
diff --git a/drivers/net/dsa/bcm_sf2.c b/drivers/net/dsa/bcm_sf2.c
index be0edfa093d0..10de0cffa047 100644
--- a/drivers/net/dsa/bcm_sf2.c
+++ b/drivers/net/dsa/bcm_sf2.c
@@ -94,6 +94,24 @@ static u16 bcm_sf2_reg_led_base(struct bcm_sf2_priv *priv, int port)
return REG_SWITCH_STATUS;
}
+static u32 bcm_sf2_port_override_offset(struct bcm_sf2_priv *priv, int port)
+{
+ switch (priv->type) {
+ case BCM4908_DEVICE_ID:
+ case BCM7445_DEVICE_ID:
+ return port == 8 ? CORE_STS_OVERRIDE_IMP :
+ CORE_STS_OVERRIDE_GMIIP_PORT(port);
+ case BCM7278_DEVICE_ID:
+ return port == 8 ? CORE_STS_OVERRIDE_IMP2 :
+ CORE_STS_OVERRIDE_GMIIP2_PORT(port);
+ default:
+ WARN_ONCE(1, "Unsupported device: %d\n", priv->type);
+ }
+
+ /* RO fallback register */
+ return REG_SWITCH_STATUS;
+}
+
/* Return the number of active ports, not counting the IMP (CPU) port */
static unsigned int bcm_sf2_num_active_ports(struct dsa_switch *ds)
{
@@ -167,11 +185,7 @@ static void bcm_sf2_imp_setup(struct dsa_switch *ds, int port)
b53_brcm_hdr_setup(ds, port);
if (port == 8) {
- if (priv->type == BCM4908_DEVICE_ID ||
- priv->type == BCM7445_DEVICE_ID)
- offset = CORE_STS_OVERRIDE_IMP;
- else
- offset = CORE_STS_OVERRIDE_IMP2;
+ offset = bcm_sf2_port_override_offset(priv, port);
/* Force link status for IMP port */
reg = core_readl(priv, offset);
@@ -813,12 +827,7 @@ static void bcm_sf2_sw_mac_link_down(struct dsa_switch *ds, int port,
return;
if (port != core_readl(priv, CORE_IMP0_PRT_ID)) {
- if (priv->type == BCM4908_DEVICE_ID ||
- priv->type == BCM7445_DEVICE_ID)
- offset = CORE_STS_OVERRIDE_GMIIP_PORT(port);
- else
- offset = CORE_STS_OVERRIDE_GMIIP2_PORT(port);
-
+ offset = bcm_sf2_port_override_offset(priv, port);
reg = core_readl(priv, offset);
reg &= ~LINK_STS;
core_writel(priv, reg, offset);
@@ -843,11 +852,7 @@ static void bcm_sf2_sw_mac_link_up(struct dsa_switch *ds, int port,
u32 reg_rgmii_ctrl = 0;
u32 reg, offset;
- if (priv->type == BCM4908_DEVICE_ID ||
- priv->type == BCM7445_DEVICE_ID)
- offset = CORE_STS_OVERRIDE_GMIIP_PORT(port);
- else
- offset = CORE_STS_OVERRIDE_GMIIP2_PORT(port);
+ offset = bcm_sf2_port_override_offset(priv, port);
if (interface == PHY_INTERFACE_MODE_RGMII ||
interface == PHY_INTERFACE_MODE_RGMII_TXID ||
--
2.25.1
next prev parent reply other threads:[~2022-07-25 21:49 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-25 21:49 [RFC net-next 0/2] net: dsa: bcm_sf2: Utilize PHYLINK for all ports Florian Fainelli
2022-07-25 21:49 ` Florian Fainelli [this message]
2022-07-25 21:49 ` [RFC net-next 2/2] net: dsa: bcm_sf2: Have PHYLINK configure CPU/IMP port(s) Florian Fainelli
2022-07-26 11:23 ` [RFC net-next 0/2] net: dsa: bcm_sf2: Utilize PHYLINK for all ports Vladimir Oltean
2022-07-26 16:14 ` Florian Fainelli
2022-07-27 1:29 ` Vladimir Oltean
2022-07-27 2:17 ` Florian Fainelli
2022-07-27 13:23 ` Vladimir Oltean
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