| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <63fc01195196384f5e244a0ce9ec2ae3a6c08fe3.1769099517.git.daniel@makrotopia.org>
Date: Thu, 22 Jan 2026 16:39:09 +0000
From: Daniel Golle <daniel@...rotopia.org>
To: Hauke Mehrtens <hauke@...ke-m.de>, Andrew Lunn <andrew@...n.ch>,
Vladimir Oltean <olteanv@...il.com>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Russell King <linux@...linux.org.uk>, netdev@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Chen Minqiang <ptpt52@...il.com>, Xinfa Deng <xinfa.deng@...inet.com>
Subject: [PATCH net-next v6 3/6] net: dsa: lantiq: allow arbitrary MII
registers
The Lantiq GSWIP and MaxLinear GSW1xx drivers are currently relying on a
hard-coded mapping of MII ports to their respective MII_CFG and MII_PCDU
registers and only allow applying an offset to the port index.
While this is sufficient for the currently supported hardware, the very
similar Intel GSW150 (aka. Lantiq PEB7084) cannot be described using
this arrangement.
Introduce two arrays to specify the MII_CFG and MII_PCDU registers for
each port, replacing the current bitmap used to safeguard MII ports as
well as the port index offset.
Signed-off-by: Daniel Golle <daniel@...rotopia.org>
---
v6: rebase on top of current net-next
v5: fix wrong indexes in array initializers
v4: spell out mii_cfg and mii_pcdu values in struct gswip_hw_info instead
of using default initializer which requires diag exception
v3: enclose the gswip_hw_info initializers in compiler diag exception
to prevent triggering -Woverride-init
v2: introduce GSWIP_MAX_PORTS macro
drivers/net/dsa/lantiq/lantiq_gswip.c | 34 ++++++++++++++----
drivers/net/dsa/lantiq/lantiq_gswip.h | 6 ++--
drivers/net/dsa/lantiq/lantiq_gswip_common.c | 27 +++------------
drivers/net/dsa/lantiq/mxl-gsw1xx.c | 36 ++++++++++++++++----
4 files changed, 66 insertions(+), 37 deletions(-)
diff --git a/drivers/net/dsa/lantiq/lantiq_gswip.c b/drivers/net/dsa/lantiq/lantiq_gswip.c
index b094001a7c805..0377fc0079b54 100644
--- a/drivers/net/dsa/lantiq/lantiq_gswip.c
+++ b/drivers/net/dsa/lantiq/lantiq_gswip.c
@@ -463,10 +463,22 @@ static void gswip_shutdown(struct platform_device *pdev)
}
static const struct gswip_hw_info gswip_xrx200 = {
- .max_ports = 7,
+ .max_ports = GSWIP_MAX_PORTS,
.allowed_cpu_ports = BIT(6),
- .mii_ports = BIT(0) | BIT(1) | BIT(5),
- .mii_port_reg_offset = 0,
+ .mii_cfg = {
+ [0] = GSWIP_MII_CFGp(0),
+ [1] = GSWIP_MII_CFGp(1),
+ [2 ... 4] = -1,
+ [5] = GSWIP_MII_CFGp(5),
+ [6] = -1,
+ },
+ .mii_pcdu = {
+ [0] = GSWIP_MII_PCDU0,
+ [1] = GSWIP_MII_PCDU1,
+ [2 ... 4] = -1,
+ [5] = GSWIP_MII_PCDU5,
+ [6] = -1,
+ },
.phylink_get_caps = gswip_xrx200_phylink_get_caps,
.pce_microcode = &gswip_pce_microcode,
.pce_microcode_size = ARRAY_SIZE(gswip_pce_microcode),
@@ -474,10 +486,20 @@ static const struct gswip_hw_info gswip_xrx200 = {
};
static const struct gswip_hw_info gswip_xrx300 = {
- .max_ports = 7,
+ .max_ports = GSWIP_MAX_PORTS,
.allowed_cpu_ports = BIT(6),
- .mii_ports = BIT(0) | BIT(5),
- .mii_port_reg_offset = 0,
+ .mii_cfg = {
+ [0] = GSWIP_MII_CFGp(0),
+ [1 ... 4] = -1,
+ [5] = GSWIP_MII_CFGp(5),
+ [6] = -1,
+ },
+ .mii_pcdu = {
+ [0] = GSWIP_MII_PCDU0,
+ [1 ... 4] = -1,
+ [5] = GSWIP_MII_PCDU5,
+ [6] = -1,
+ },
.phylink_get_caps = gswip_xrx300_phylink_get_caps,
.pce_microcode = &gswip_pce_microcode,
.pce_microcode_size = ARRAY_SIZE(gswip_pce_microcode),
diff --git a/drivers/net/dsa/lantiq/lantiq_gswip.h b/drivers/net/dsa/lantiq/lantiq_gswip.h
index 8fc4c7cc5283a..bc3686faad0d6 100644
--- a/drivers/net/dsa/lantiq/lantiq_gswip.h
+++ b/drivers/net/dsa/lantiq/lantiq_gswip.h
@@ -243,6 +243,8 @@
#define GSWIP_VLAN_UNAWARE_PVID 0
+#define GSWIP_MAX_PORTS 7
+
struct gswip_pce_microcode {
u16 val_3;
u16 val_2;
@@ -253,8 +255,8 @@ struct gswip_pce_microcode {
struct gswip_hw_info {
int max_ports;
unsigned int allowed_cpu_ports;
- unsigned int mii_ports;
- int mii_port_reg_offset;
+ s16 mii_cfg[GSWIP_MAX_PORTS];
+ s16 mii_pcdu[GSWIP_MAX_PORTS];
bool supports_2500m;
const struct gswip_pce_microcode (*pce_microcode)[];
size_t pce_microcode_size;
diff --git a/drivers/net/dsa/lantiq/lantiq_gswip_common.c b/drivers/net/dsa/lantiq/lantiq_gswip_common.c
index 17a61e445f00f..0e8eedf64d3a3 100644
--- a/drivers/net/dsa/lantiq/lantiq_gswip_common.c
+++ b/drivers/net/dsa/lantiq/lantiq_gswip_common.c
@@ -118,15 +118,11 @@ static u32 gswip_switch_r_timeout(struct gswip_priv *priv, u32 offset,
static void gswip_mii_mask_cfg(struct gswip_priv *priv, u32 mask, u32 set,
int port)
{
- int reg_port;
-
/* MII_CFG register only exists for MII ports */
- if (!(priv->hw_info->mii_ports & BIT(port)))
+ if (priv->hw_info->mii_cfg[port] == -1)
return;
- reg_port = port + priv->hw_info->mii_port_reg_offset;
-
- regmap_write_bits(priv->mii, GSWIP_MII_CFGp(reg_port), mask,
+ regmap_write_bits(priv->mii, priv->hw_info->mii_cfg[port], mask,
set);
}
@@ -610,28 +606,13 @@ static void gswip_mii_delay_setup(struct gswip_priv *priv, struct dsa_port *dp,
u32 tx_delay = GSWIP_MII_PCDU_TXDLY_DEFAULT;
u32 rx_delay = GSWIP_MII_PCDU_RXDLY_DEFAULT;
struct device_node *port_dn = dp->dn;
- u16 mii_pcdu_reg;
/* As MII_PCDU registers only exist for MII ports, silently return
* unless the port is an MII port
*/
- if (!(priv->hw_info->mii_ports & BIT(dp->index)))
+ if (priv->hw_info->mii_pcdu[dp->index] == -1)
return;
- switch (dp->index + priv->hw_info->mii_port_reg_offset) {
- case 0:
- mii_pcdu_reg = GSWIP_MII_PCDU0;
- break;
- case 1:
- mii_pcdu_reg = GSWIP_MII_PCDU1;
- break;
- case 5:
- mii_pcdu_reg = GSWIP_MII_PCDU5;
- break;
- default:
- return;
- }
-
/* legacy code to set default delays according to the interface mode */
switch (interface) {
case PHY_INTERFACE_MODE_RGMII_ID:
@@ -652,7 +633,7 @@ static void gswip_mii_delay_setup(struct gswip_priv *priv, struct dsa_port *dp,
of_property_read_u32(port_dn, "rx-internal-delay-ps", &rx_delay);
of_property_read_u32(port_dn, "tx-internal-delay-ps", &tx_delay);
- regmap_write_bits(priv->mii, mii_pcdu_reg,
+ regmap_write_bits(priv->mii, priv->hw_info->mii_pcdu[dp->index],
GSWIP_MII_PCDU_TXDLY_MASK |
GSWIP_MII_PCDU_RXDLY_MASK,
GSWIP_MII_PCDU_TXDLY(tx_delay) |
diff --git a/drivers/net/dsa/lantiq/mxl-gsw1xx.c b/drivers/net/dsa/lantiq/mxl-gsw1xx.c
index 6afc7539fefbe..c9cc277e382c2 100644
--- a/drivers/net/dsa/lantiq/mxl-gsw1xx.c
+++ b/drivers/net/dsa/lantiq/mxl-gsw1xx.c
@@ -739,8 +739,16 @@ static void gsw1xx_shutdown(struct mdio_device *mdiodev)
static const struct gswip_hw_info gsw12x_data = {
.max_ports = GSW1XX_PORTS,
.allowed_cpu_ports = BIT(GSW1XX_MII_PORT) | BIT(GSW1XX_SGMII_PORT),
- .mii_ports = BIT(GSW1XX_MII_PORT),
- .mii_port_reg_offset = -GSW1XX_MII_PORT,
+ .mii_cfg = {
+ [0 ... GSW1XX_MII_PORT - 1] = -1,
+ [GSW1XX_MII_PORT] = GSWIP_MII_CFGp(0),
+ [GSW1XX_MII_PORT + 1 ... GSWIP_MAX_PORTS - 1] = -1,
+ },
+ .mii_pcdu = {
+ [0 ... GSW1XX_MII_PORT - 1] = -1,
+ [GSW1XX_MII_PORT] = GSWIP_MII_PCDU0,
+ [GSW1XX_MII_PORT + 1 ... GSWIP_MAX_PORTS - 1] = -1,
+ },
.mac_select_pcs = gsw1xx_phylink_mac_select_pcs,
.phylink_get_caps = &gsw1xx_phylink_get_caps,
.supports_2500m = true,
@@ -753,8 +761,16 @@ static const struct gswip_hw_info gsw12x_data = {
static const struct gswip_hw_info gsw140_data = {
.max_ports = GSW1XX_PORTS,
.allowed_cpu_ports = BIT(GSW1XX_MII_PORT) | BIT(GSW1XX_SGMII_PORT),
- .mii_ports = BIT(GSW1XX_MII_PORT),
- .mii_port_reg_offset = -GSW1XX_MII_PORT,
+ .mii_cfg = {
+ [0 ... GSW1XX_MII_PORT - 1] = -1,
+ [GSW1XX_MII_PORT] = GSWIP_MII_CFGp(0),
+ [GSW1XX_MII_PORT + 1 ... GSWIP_MAX_PORTS - 1] = -1,
+ },
+ .mii_pcdu = {
+ [0 ... GSW1XX_MII_PORT - 1] = -1,
+ [GSW1XX_MII_PORT] = GSWIP_MII_PCDU0,
+ [GSW1XX_MII_PORT + 1 ... GSWIP_MAX_PORTS - 1] = -1,
+ },
.mac_select_pcs = gsw1xx_phylink_mac_select_pcs,
.phylink_get_caps = &gsw1xx_phylink_get_caps,
.supports_2500m = true,
@@ -767,8 +783,16 @@ static const struct gswip_hw_info gsw140_data = {
static const struct gswip_hw_info gsw141_data = {
.max_ports = GSW1XX_PORTS,
.allowed_cpu_ports = BIT(GSW1XX_MII_PORT) | BIT(GSW1XX_SGMII_PORT),
- .mii_ports = BIT(GSW1XX_MII_PORT),
- .mii_port_reg_offset = -GSW1XX_MII_PORT,
+ .mii_cfg = {
+ [0 ... GSW1XX_MII_PORT - 1] = -1,
+ [GSW1XX_MII_PORT] = GSWIP_MII_CFGp(0),
+ [GSW1XX_MII_PORT + 1 ... GSWIP_MAX_PORTS - 1] = -1,
+ },
+ .mii_pcdu = {
+ [0 ... GSW1XX_MII_PORT - 1] = -1,
+ [GSW1XX_MII_PORT] = GSWIP_MII_PCDU0,
+ [GSW1XX_MII_PORT + 1 ... GSWIP_MAX_PORTS - 1] = -1,
+ },
.mac_select_pcs = gsw1xx_phylink_mac_select_pcs,
.phylink_get_caps = gsw1xx_phylink_get_caps,
.port_setup = gsw1xx_port_setup,
--
2.52.0
Powered by blists - more mailing lists