Messages in this thread Patch in this message | | | From | Arun Ramadoss <> | Subject | [Patch net-next v1 3/9] net: dsa: microchip: add common duplex and flow control function | Date | Fri, 22 Jul 2022 14:54:53 +0530 |
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This patch add common function for configuring the Full/Half duplex and transmit/receive flow control. KSZ8795 uses the Global control register 4 for configuring the duplex and flow control, whereas all other KSZ9477 based switch uses the xMII Control 0 register.
Signed-off-by: Arun Ramadoss <arun.ramadoss@microchip.com> --- drivers/net/dsa/microchip/ksz9477_reg.h | 1 - drivers/net/dsa/microchip/ksz_common.c | 62 ++++++++++++++++++++++++ drivers/net/dsa/microchip/ksz_common.h | 8 +++ drivers/net/dsa/microchip/lan937x_main.c | 24 +++------ drivers/net/dsa/microchip/lan937x_reg.h | 3 -- 5 files changed, 78 insertions(+), 20 deletions(-)
diff --git a/drivers/net/dsa/microchip/ksz9477_reg.h b/drivers/net/dsa/microchip/ksz9477_reg.h index 2649fdf0bae1..6ca859345932 100644 --- a/drivers/net/dsa/microchip/ksz9477_reg.h +++ b/drivers/net/dsa/microchip/ksz9477_reg.h @@ -1178,7 +1178,6 @@ #define REG_PORT_XMII_CTRL_0 0x0300 #define PORT_SGMII_SEL BIT(7) -#define PORT_MII_FULL_DUPLEX BIT(6) #define PORT_GRXC_ENABLE BIT(0) #define REG_PORT_XMII_CTRL_1 0x0301 diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c index 85392d3b1c2b..16825fcf43a8 100644 --- a/drivers/net/dsa/microchip/ksz_common.c +++ b/drivers/net/dsa/microchip/ksz_common.c @@ -281,11 +281,15 @@ static const u32 ksz8795_masks[] = { [DYNAMIC_MAC_TABLE_FID] = GENMASK(26, 20), [DYNAMIC_MAC_TABLE_SRC_PORT] = GENMASK(26, 24), [DYNAMIC_MAC_TABLE_TIMESTAMP] = GENMASK(28, 27), + [P_MII_TX_FLOW_CTRL] = BIT(5), + [P_MII_RX_FLOW_CTRL] = BIT(5), }; static const u8 ksz8795_xmii_ctrl0[] = { [P_MII_100MBIT] = 0, [P_MII_10MBIT] = 1, + [P_MII_FULL_DUPLEX] = 0, + [P_MII_HALF_DUPLEX] = 1, }; static const u8 ksz8795_xmii_ctrl1[] = { @@ -370,6 +374,8 @@ static const u16 ksz9477_regs[] = { static const u32 ksz9477_masks[] = { [ALU_STAT_WRITE] = 0, [ALU_STAT_READ] = 1, + [P_MII_TX_FLOW_CTRL] = BIT(5), + [P_MII_RX_FLOW_CTRL] = BIT(3), }; static const u8 ksz9477_shifts[] = { @@ -379,6 +385,8 @@ static const u8 ksz9477_shifts[] = { static const u8 ksz9477_xmii_ctrl0[] = { [P_MII_100MBIT] = 1, [P_MII_10MBIT] = 0, + [P_MII_FULL_DUPLEX] = 1, + [P_MII_HALF_DUPLEX] = 0, }; static const u8 ksz9477_xmii_ctrl1[] = { @@ -389,6 +397,8 @@ static const u8 ksz9477_xmii_ctrl1[] = { static const u32 lan937x_masks[] = { [ALU_STAT_WRITE] = 1, [ALU_STAT_READ] = 2, + [P_MII_TX_FLOW_CTRL] = BIT(5), + [P_MII_RX_FLOW_CTRL] = BIT(3), }; static const u8 lan937x_shifts[] = { @@ -1468,6 +1478,58 @@ void ksz_port_set_xmii_speed(struct ksz_device *dev, int port, int speed) ksz_set_100_10mbit(dev, port, speed); } +void ksz_set_fullduplex(struct ksz_device *dev, int port, bool val) +{ + const u8 *bitval = dev->info->xmii_ctrl0; + const u16 *regs = dev->info->regs; + u8 data8; + + ksz_pread8(dev, port, regs[P_XMII_CTRL_0], &data8); + + data8 &= ~P_MII_DUPLEX_M; + + if (val) + data8 |= FIELD_PREP(P_MII_DUPLEX_M, + bitval[P_MII_FULL_DUPLEX]); + else + data8 |= FIELD_PREP(P_MII_DUPLEX_M, + bitval[P_MII_HALF_DUPLEX]); + + ksz_pwrite8(dev, port, regs[P_XMII_CTRL_0], data8); +} + +void ksz_set_tx_pause(struct ksz_device *dev, int port, bool val) +{ + const u32 *masks = dev->info->masks; + const u16 *regs = dev->info->regs; + u8 data8; + + ksz_pread8(dev, port, regs[P_XMII_CTRL_0], &data8); + + if (val) + data8 |= masks[P_MII_TX_FLOW_CTRL]; + else + data8 &= ~masks[P_MII_TX_FLOW_CTRL]; + + ksz_pwrite8(dev, port, regs[P_XMII_CTRL_0], data8); +} + +void ksz_set_rx_pause(struct ksz_device *dev, int port, bool val) +{ + const u32 *masks = dev->info->masks; + const u16 *regs = dev->info->regs; + u8 data8; + + ksz_pread8(dev, port, regs[P_XMII_CTRL_0], &data8); + + if (val) + data8 |= masks[P_MII_RX_FLOW_CTRL]; + else + data8 &= ~masks[P_MII_RX_FLOW_CTRL]; + + ksz_pwrite8(dev, port, regs[P_XMII_CTRL_0], data8); +} + static void ksz_phylink_mac_link_up(struct dsa_switch *ds, int port, unsigned int mode, phy_interface_t interface, diff --git a/drivers/net/dsa/microchip/ksz_common.h b/drivers/net/dsa/microchip/ksz_common.h index d87dc88d9f20..df8759dc02bd 100644 --- a/drivers/net/dsa/microchip/ksz_common.h +++ b/drivers/net/dsa/microchip/ksz_common.h @@ -197,6 +197,8 @@ enum ksz_masks { DYNAMIC_MAC_TABLE_TIMESTAMP, ALU_STAT_WRITE, ALU_STAT_READ, + P_MII_TX_FLOW_CTRL, + P_MII_RX_FLOW_CTRL, }; enum ksz_shifts { @@ -215,6 +217,8 @@ enum ksz_shifts { enum ksz_xmii_ctrl0 { P_MII_100MBIT, P_MII_10MBIT, + P_MII_FULL_DUPLEX, + P_MII_HALF_DUPLEX, }; enum ksz_xmii_ctrl1 { @@ -310,6 +314,9 @@ void ksz_port_stp_state_set(struct dsa_switch *ds, int port, u8 state); bool ksz_get_gbit(struct ksz_device *dev, int port); void ksz_set_gbit(struct ksz_device *dev, int port, bool gbit); void ksz_port_set_xmii_speed(struct ksz_device *dev, int port, int speed); +void ksz_set_fullduplex(struct ksz_device *dev, int port, bool val); +void ksz_set_tx_pause(struct ksz_device *dev, int port, bool val); +void ksz_set_rx_pause(struct ksz_device *dev, int port, bool val); extern const struct ksz_chip_data ksz_switch_chips[]; /* Common register access functions */ @@ -474,6 +481,7 @@ static inline int is_lan937x(struct ksz_device *dev) #define SW_START 0x01 /* xMII configuration */ +#define P_MII_DUPLEX_M BIT(6) #define P_MII_100MBIT_M BIT(4) #define P_GMII_1GBIT_M BIT(6) diff --git a/drivers/net/dsa/microchip/lan937x_main.c b/drivers/net/dsa/microchip/lan937x_main.c index c48bae285758..92275064fa6b 100644 --- a/drivers/net/dsa/microchip/lan937x_main.c +++ b/drivers/net/dsa/microchip/lan937x_main.c @@ -234,6 +234,8 @@ int lan937x_reset_switch(struct ksz_device *dev) void lan937x_port_setup(struct ksz_device *dev, int port, bool cpu_port) { + const u32 *masks = dev->info->masks; + const u16 *regs = dev->info->regs; struct dsa_switch *ds = dev->ds; u8 member; @@ -254,8 +256,9 @@ void lan937x_port_setup(struct ksz_device *dev, int port, bool cpu_port) lan937x_port_cfg(dev, port, P_PRIO_CTRL, PORT_802_1P_PRIO_ENABLE, true); if (!dev->info->internal_phy[port]) - lan937x_port_cfg(dev, port, REG_PORT_XMII_CTRL_0, - PORT_MII_TX_FLOW_CTRL | PORT_MII_RX_FLOW_CTRL, + lan937x_port_cfg(dev, port, regs[P_XMII_CTRL_0], + masks[P_MII_TX_FLOW_CTRL] | + masks[P_MII_RX_FLOW_CTRL], true); if (cpu_port) @@ -346,25 +349,14 @@ static void lan937x_config_interface(struct ksz_device *dev, int port, int speed, int duplex, bool tx_pause, bool rx_pause) { - u8 xmii_ctrl0; - ksz_port_set_xmii_speed(dev, port, speed); - ksz_pread8(dev, port, REG_PORT_XMII_CTRL_0, &xmii_ctrl0); - - xmii_ctrl0 &= ~(PORT_MII_FULL_DUPLEX | PORT_MII_TX_FLOW_CTRL | - PORT_MII_RX_FLOW_CTRL); - - if (duplex) - xmii_ctrl0 |= PORT_MII_FULL_DUPLEX; + ksz_set_fullduplex(dev, port, duplex); - if (tx_pause) - xmii_ctrl0 |= PORT_MII_TX_FLOW_CTRL; + ksz_set_tx_pause(dev, port, tx_pause); - if (rx_pause) - xmii_ctrl0 |= PORT_MII_RX_FLOW_CTRL; + ksz_set_rx_pause(dev, port, rx_pause); - ksz_pwrite8(dev, port, REG_PORT_XMII_CTRL_0, xmii_ctrl0); } void lan937x_phylink_get_caps(struct ksz_device *dev, int port, diff --git a/drivers/net/dsa/microchip/lan937x_reg.h b/drivers/net/dsa/microchip/lan937x_reg.h index b9364f6a4f8f..d5eb6dc3a739 100644 --- a/drivers/net/dsa/microchip/lan937x_reg.h +++ b/drivers/net/dsa/microchip/lan937x_reg.h @@ -133,9 +133,6 @@ /* 3 - xMII */ #define REG_PORT_XMII_CTRL_0 0x0300 #define PORT_SGMII_SEL BIT(7) -#define PORT_MII_FULL_DUPLEX BIT(6) -#define PORT_MII_TX_FLOW_CTRL BIT(5) -#define PORT_MII_RX_FLOW_CTRL BIT(3) #define PORT_GRXC_ENABLE BIT(0) #define REG_PORT_XMII_CTRL_1 0x0301 -- 2.36.1
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