diff options
Diffstat (limited to 'drivers/net/dsa/realtek')
| -rw-r--r-- | drivers/net/dsa/realtek/Kconfig | 54 | ||||
| -rw-r--r-- | drivers/net/dsa/realtek/Makefile | 6 | ||||
| -rw-r--r-- | drivers/net/dsa/realtek/realtek-mdio.c | 287 | ||||
| -rw-r--r-- | drivers/net/dsa/realtek/realtek-smi.c | 570 | ||||
| -rw-r--r-- | drivers/net/dsa/realtek/realtek.h | 150 | ||||
| -rw-r--r-- | drivers/net/dsa/realtek/rtl8365mb.c | 2148 | ||||
| -rw-r--r-- | drivers/net/dsa/realtek/rtl8366-core.c | 448 | ||||
| -rw-r--r-- | drivers/net/dsa/realtek/rtl8366rb.c | 1873 |
8 files changed, 5536 insertions, 0 deletions
diff --git a/drivers/net/dsa/realtek/Kconfig b/drivers/net/dsa/realtek/Kconfig new file mode 100644 index 000000000000..060165a85fb7 --- /dev/null +++ b/drivers/net/dsa/realtek/Kconfig @@ -0,0 +1,54 @@ +# SPDX-License-Identifier: GPL-2.0-only +menuconfig NET_DSA_REALTEK + tristate "Realtek Ethernet switch family support" + depends on NET_DSA + select FIXED_PHY + select IRQ_DOMAIN + select REALTEK_PHY + select REGMAP + help + Select to enable support for Realtek Ethernet switch chips. + + Note that at least one interface driver must be enabled for the + subdrivers to be loaded. Moreover, an interface driver cannot achieve + anything without at least one subdriver enabled. + +if NET_DSA_REALTEK + +config NET_DSA_REALTEK_MDIO + tristate "Realtek MDIO interface driver" + depends on OF + depends on NET_DSA_REALTEK_RTL8365MB || NET_DSA_REALTEK_RTL8366RB + depends on NET_DSA_REALTEK_RTL8365MB || !NET_DSA_REALTEK_RTL8365MB + depends on NET_DSA_REALTEK_RTL8366RB || !NET_DSA_REALTEK_RTL8366RB + help + Select to enable support for registering switches configured + through MDIO. + +config NET_DSA_REALTEK_SMI + tristate "Realtek SMI interface driver" + depends on OF + depends on NET_DSA_REALTEK_RTL8365MB || NET_DSA_REALTEK_RTL8366RB + depends on NET_DSA_REALTEK_RTL8365MB || !NET_DSA_REALTEK_RTL8365MB + depends on NET_DSA_REALTEK_RTL8366RB || !NET_DSA_REALTEK_RTL8366RB + help + Select to enable support for registering switches connected + through SMI. + +config NET_DSA_REALTEK_RTL8365MB + tristate "Realtek RTL8365MB switch subdriver" + imply NET_DSA_REALTEK_SMI + imply NET_DSA_REALTEK_MDIO + select NET_DSA_TAG_RTL8_4 + help + Select to enable support for Realtek RTL8365MB-VC and RTL8367S. + +config NET_DSA_REALTEK_RTL8366RB + tristate "Realtek RTL8366RB switch subdriver" + imply NET_DSA_REALTEK_SMI + imply NET_DSA_REALTEK_MDIO + select NET_DSA_TAG_RTL4_A + help + Select to enable support for Realtek RTL8366RB. + +endif diff --git a/drivers/net/dsa/realtek/Makefile b/drivers/net/dsa/realtek/Makefile new file mode 100644 index 000000000000..0aab57252a7c --- /dev/null +++ b/drivers/net/dsa/realtek/Makefile @@ -0,0 +1,6 @@ +# SPDX-License-Identifier: GPL-2.0 +obj-$(CONFIG_NET_DSA_REALTEK_MDIO) += realtek-mdio.o +obj-$(CONFIG_NET_DSA_REALTEK_SMI) += realtek-smi.o +obj-$(CONFIG_NET_DSA_REALTEK_RTL8366RB) += rtl8366.o +rtl8366-objs := rtl8366-core.o rtl8366rb.o +obj-$(CONFIG_NET_DSA_REALTEK_RTL8365MB) += rtl8365mb.o diff --git a/drivers/net/dsa/realtek/realtek-mdio.c b/drivers/net/dsa/realtek/realtek-mdio.c new file mode 100644 index 000000000000..3e54fac5f902 --- /dev/null +++ b/drivers/net/dsa/realtek/realtek-mdio.c @@ -0,0 +1,287 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* Realtek MDIO interface driver + * + * ASICs we intend to support with this driver: + * + * RTL8366 - The original version, apparently + * RTL8369 - Similar enough to have the same datsheet as RTL8366 + * RTL8366RB - Probably reads out "RTL8366 revision B", has a quite + * different register layout from the other two + * RTL8366S - Is this "RTL8366 super"? + * RTL8367 - Has an OpenWRT driver as well + * RTL8368S - Seems to be an alternative name for RTL8366RB + * RTL8370 - Also uses SMI + * + * Copyright (C) 2017 Linus Walleij <linus.walleij@linaro.org> + * Copyright (C) 2010 Antti Seppälä <a.seppala@gmail.com> + * Copyright (C) 2010 Roman Yeryomin <roman@advem.lv> + * Copyright (C) 2011 Colin Leitner <colin.leitner@googlemail.com> + * Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org> + */ + +#include <linux/module.h> +#include <linux/of_device.h> +#include <linux/regmap.h> + +#include "realtek.h" + +/* Read/write via mdiobus */ +#define REALTEK_MDIO_CTRL0_REG 31 +#define REALTEK_MDIO_START_REG 29 +#define REALTEK_MDIO_CTRL1_REG 21 +#define REALTEK_MDIO_ADDRESS_REG 23 +#define REALTEK_MDIO_DATA_WRITE_REG 24 +#define REALTEK_MDIO_DATA_READ_REG 25 + +#define REALTEK_MDIO_START_OP 0xFFFF +#define REALTEK_MDIO_ADDR_OP 0x000E +#define REALTEK_MDIO_READ_OP 0x0001 +#define REALTEK_MDIO_WRITE_OP 0x0003 + +static int realtek_mdio_write(void *ctx, u32 reg, u32 val) +{ + struct realtek_priv *priv = ctx; + struct mii_bus *bus = priv->bus; + int ret; + + mutex_lock(&bus->mdio_lock); + + ret = bus->write(bus, priv->mdio_addr, REALTEK_MDIO_CTRL0_REG, REALTEK_MDIO_ADDR_OP); + if (ret) + goto out_unlock; + + ret = bus->write(bus, priv->mdio_addr, REALTEK_MDIO_ADDRESS_REG, reg); + if (ret) + goto out_unlock; + + ret = bus->write(bus, priv->mdio_addr, REALTEK_MDIO_DATA_WRITE_REG, val); + if (ret) + goto out_unlock; + + ret = bus->write(bus, priv->mdio_addr, REALTEK_MDIO_CTRL1_REG, REALTEK_MDIO_WRITE_OP); + +out_unlock: + mutex_unlock(&bus->mdio_lock); + + return ret; +} + +static int realtek_mdio_read(void *ctx, u32 reg, u32 *val) +{ + struct realtek_priv *priv = ctx; + struct mii_bus *bus = priv->bus; + int ret; + + mutex_lock(&bus->mdio_lock); + + ret = bus->write(bus, priv->mdio_addr, REALTEK_MDIO_CTRL0_REG, REALTEK_MDIO_ADDR_OP); + if (ret) + goto out_unlock; + + ret = bus->write(bus, priv->mdio_addr, REALTEK_MDIO_ADDRESS_REG, reg); + if (ret) + goto out_unlock; + + ret = bus->write(bus, priv->mdio_addr, REALTEK_MDIO_CTRL1_REG, REALTEK_MDIO_READ_OP); + if (ret) + goto out_unlock; + + ret = bus->read(bus, priv->mdio_addr, REALTEK_MDIO_DATA_READ_REG); + if (ret >= 0) { + *val = ret; + ret = 0; + } + +out_unlock: + mutex_unlock(&bus->mdio_lock); + + return ret; +} + +static void realtek_mdio_lock(void *ctx) +{ + struct realtek_priv *priv = ctx; + + mutex_lock(&priv->map_lock); +} + +static void realtek_mdio_unlock(void *ctx) +{ + struct realtek_priv *priv = ctx; + + mutex_unlock(&priv->map_lock); +} + +static const struct regmap_config realtek_mdio_regmap_config = { + .reg_bits = 10, /* A4..A0 R4..R0 */ + .val_bits = 16, + .reg_stride = 1, + /* PHY regs are at 0x8000 */ + .max_register = 0xffff, + .reg_format_endian = REGMAP_ENDIAN_BIG, + .reg_read = realtek_mdio_read, + .reg_write = realtek_mdio_write, + .cache_type = REGCACHE_NONE, + .lock = realtek_mdio_lock, + .unlock = realtek_mdio_unlock, +}; + +static const struct regmap_config realtek_mdio_nolock_regmap_config = { + .reg_bits = 10, /* A4..A0 R4..R0 */ + .val_bits = 16, + .reg_stride = 1, + /* PHY regs are at 0x8000 */ + .max_register = 0xffff, + .reg_format_endian = REGMAP_ENDIAN_BIG, + .reg_read = realtek_mdio_read, + .reg_write = realtek_mdio_write, + .cache_type = REGCACHE_NONE, + .disable_locking = true, +}; + +static int realtek_mdio_probe(struct mdio_device *mdiodev) +{ + struct realtek_priv *priv; + struct device *dev = &mdiodev->dev; + const struct realtek_variant *var; + struct regmap_config rc; + struct device_node *np; + int ret; + + var = of_device_get_match_data(dev); + if (!var) + return -EINVAL; + + priv = devm_kzalloc(&mdiodev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + mutex_init(&priv->map_lock); + + rc = realtek_mdio_regmap_config; + rc.lock_arg = priv; + priv->map = devm_regmap_init(dev, NULL, priv, &rc); + if (IS_ERR(priv->map)) { + ret = PTR_ERR(priv->map); + dev_err(dev, "regmap init failed: %d\n", ret); + return ret; + } + + rc = realtek_mdio_nolock_regmap_config; + priv->map_nolock = devm_regmap_init(dev, NULL, priv, &rc); + if (IS_ERR(priv->map_nolock)) { + ret = PTR_ERR(priv->map_nolock); + dev_err(dev, "regmap init failed: %d\n", ret); + return ret; + } + + priv->mdio_addr = mdiodev->addr; + priv->bus = mdiodev->bus; + priv->dev = &mdiodev->dev; + priv->chip_data = (void *)priv + sizeof(*priv); + + priv->clk_delay = var->clk_delay; + priv->cmd_read = var->cmd_read; + priv->cmd_write = var->cmd_write; + priv->ops = var->ops; + + priv->write_reg_noack = realtek_mdio_write; + + np = dev->of_node; + + dev_set_drvdata(dev, priv); + + /* TODO: if power is software controlled, set up any regulators here */ + priv->leds_disabled = of_property_read_bool(np, "realtek,disable-leds"); + + priv->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(priv->reset)) { + dev_err(dev, "failed to get RESET GPIO\n"); + return PTR_ERR(priv->reset); + } + + if (priv->reset) { + gpiod_set_value(priv->reset, 1); + dev_dbg(dev, "asserted RESET\n"); + msleep(REALTEK_HW_STOP_DELAY); + gpiod_set_value(priv->reset, 0); + msleep(REALTEK_HW_START_DELAY); + dev_dbg(dev, "deasserted RESET\n"); + } + + ret = priv->ops->detect(priv); + if (ret) { + dev_err(dev, "unable to detect switch\n"); + return ret; + } + + priv->ds = devm_kzalloc(dev, sizeof(*priv->ds), GFP_KERNEL); + if (!priv->ds) + return -ENOMEM; + + priv->ds->dev = dev; + priv->ds->num_ports = priv->num_ports; + priv->ds->priv = priv; + priv->ds->ops = var->ds_ops_mdio; + + ret = dsa_register_switch(priv->ds); + if (ret) { + dev_err(priv->dev, "unable to register switch ret = %d\n", ret); + return ret; + } + + return 0; +} + +static void realtek_mdio_remove(struct mdio_device *mdiodev) +{ + struct realtek_priv *priv = dev_get_drvdata(&mdiodev->dev); + + if (!priv) + return; + + dsa_unregister_switch(priv->ds); + + /* leave the device reset asserted */ + if (priv->reset) + gpiod_set_value(priv->reset, 1); +} + +static void realtek_mdio_shutdown(struct mdio_device *mdiodev) +{ + struct realtek_priv *priv = dev_get_drvdata(&mdiodev->dev); + + if (!priv) + return; + + dsa_switch_shutdown(priv->ds); + + dev_set_drvdata(&mdiodev->dev, NULL); +} + +static const struct of_device_id realtek_mdio_of_match[] = { +#if IS_ENABLED(CONFIG_NET_DSA_REALTEK_RTL8366RB) + { .compatible = "realtek,rtl8366rb", .data = &rtl8366rb_variant, }, +#endif +#if IS_ENABLED(CONFIG_NET_DSA_REALTEK_RTL8365MB) + { .compatible = "realtek,rtl8365mb", .data = &rtl8365mb_variant, }, +#endif + { /* sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, realtek_mdio_of_match); + +static struct mdio_driver realtek_mdio_driver = { + .mdiodrv.driver = { + .name = "realtek-mdio", + .of_match_table = of_match_ptr(realtek_mdio_of_match), + }, + .probe = realtek_mdio_probe, + .remove = realtek_mdio_remove, + .shutdown = realtek_mdio_shutdown, +}; + +mdio_module_driver(realtek_mdio_driver); + +MODULE_AUTHOR("Luiz Angelo Daros de Luca <luizluca@gmail.com>"); +MODULE_DESCRIPTION("Driver for Realtek ethernet switch connected via MDIO interface"); +MODULE_LICENSE("GPL"); diff --git a/drivers/net/dsa/realtek/realtek-smi.c b/drivers/net/dsa/realtek/realtek-smi.c new file mode 100644 index 000000000000..1b447d96b9c4 --- /dev/null +++ b/drivers/net/dsa/realtek/realtek-smi.c @@ -0,0 +1,570 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* Realtek Simple Management Interface (SMI) driver + * It can be discussed how "simple" this interface is. + * + * The SMI protocol piggy-backs the MDIO MDC and MDIO signals levels + * but the protocol is not MDIO at all. Instead it is a Realtek + * pecularity that need to bit-bang the lines in a special way to + * communicate with the switch. + * + * ASICs we intend to support with this driver: + * + * RTL8366 - The original version, apparently + * RTL8369 - Similar enough to have the same datsheet as RTL8366 + * RTL8366RB - Probably reads out "RTL8366 revision B", has a quite + * different register layout from the other two + * RTL8366S - Is this "RTL8366 super"? + * RTL8367 - Has an OpenWRT driver as well + * RTL8368S - Seems to be an alternative name for RTL8366RB + * RTL8370 - Also uses SMI + * + * Copyright (C) 2017 Linus Walleij <linus.walleij@linaro.org> + * Copyright (C) 2010 Antti Seppälä <a.seppala@gmail.com> + * Copyright (C) 2010 Roman Yeryomin <roman@advem.lv> + * Copyright (C) 2011 Colin Leitner <colin.leitner@googlemail.com> + * Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org> + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/device.h> +#include <linux/spinlock.h> +#include <linux/skbuff.h> +#include <linux/of.h> +#include <linux/of_device.h> +#include <linux/of_mdio.h> +#include <linux/delay.h> +#include <linux/gpio/consumer.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> +#include <linux/bitops.h> +#include <linux/if_bridge.h> + +#include "realtek.h" + +#define REALTEK_SMI_ACK_RETRY_COUNT 5 + +static inline void realtek_smi_clk_delay(struct realtek_priv *priv) +{ + ndelay(priv->clk_delay); +} + +static void realtek_smi_start(struct realtek_priv *priv) +{ + /* Set GPIO pins to output mode, with initial state: + * SCK = 0, SDA = 1 + */ + gpiod_direction_output(priv->mdc, 0); + gpiod_direction_output(priv->mdio, 1); + realtek_smi_clk_delay(priv); + + /* CLK 1: 0 -> 1, 1 -> 0 */ + gpiod_set_value(priv->mdc, 1); + realtek_smi_clk_delay(priv); + gpiod_set_value(priv->mdc, 0); + realtek_smi_clk_delay(priv); + + /* CLK 2: */ + gpiod_set_value(priv->mdc, 1); + realtek_smi_clk_delay(priv); + gpiod_set_value(priv->mdio, 0); + realtek_smi_clk_delay(priv); + gpiod_set_value(priv->mdc, 0); + realtek_smi_clk_delay(priv); + gpiod_set_value(priv->mdio, 1); +} + +static void realtek_smi_stop(struct realtek_priv *priv) +{ + realtek_smi_clk_delay(priv); + gpiod_set_value(priv->mdio, 0); + gpiod_set_value(priv->mdc, 1); + realtek_smi_clk_delay(priv); + gpiod_set_value(priv->mdio, 1); + realtek_smi_clk_delay(priv); + gpiod_set_value(priv->mdc, 1); + realtek_smi_clk_delay(priv); + gpiod_set_value(priv->mdc, 0); + realtek_smi_clk_delay(priv); + gpiod_set_value(priv->mdc, 1); + + /* Add a click */ + realtek_smi_clk_delay(priv); + gpiod_set_value(priv->mdc, 0); + realtek_smi_clk_delay(priv); + gpiod_set_value(priv->mdc, 1); + + /* Set GPIO pins to input mode */ + gpiod_direction_input(priv->mdio); + gpiod_direction_input(priv->mdc); +} + +static void realtek_smi_write_bits(struct realtek_priv *priv, u32 data, u32 len) +{ + for (; len > 0; len--) { + realtek_smi_clk_delay(priv); + + /* Prepare data */ + gpiod_set_value(priv->mdio, !!(data & (1 << (len - 1)))); + realtek_smi_clk_delay(priv); + + /* Clocking */ + gpiod_set_value(priv->mdc, 1); + realtek_smi_clk_delay(priv); + gpiod_set_value(priv->mdc, 0); + } +} + +static void realtek_smi_read_bits(struct realtek_priv *priv, u32 len, u32 *data) +{ + gpiod_direction_input(priv->mdio); + + for (*data = 0; len > 0; len--) { + u32 u; + + realtek_smi_clk_delay(priv); + + /* Clocking */ + gpiod_set_value(priv->mdc, 1); + realtek_smi_clk_delay(priv); + u = !!gpiod_get_value(priv->mdio); + gpiod_set_value(priv->mdc, 0); + + *data |= (u << (len - 1)); + } + + gpiod_direction_output(priv->mdio, 0); +} + +static int realtek_smi_wait_for_ack(struct realtek_priv *priv) +{ + int retry_cnt; + + retry_cnt = 0; + do { + u32 ack; + + realtek_smi_read_bits(priv, 1, &ack); + if (ack == 0) + break; + + if (++retry_cnt > REALTEK_SMI_ACK_RETRY_COUNT) { + dev_err(priv->dev, "ACK timeout\n"); + return -ETIMEDOUT; + } + } while (1); + + return 0; +} + +static int realtek_smi_write_byte(struct realtek_priv *priv, u8 data) +{ + realtek_smi_write_bits(priv, data, 8); + return realtek_smi_wait_for_ack(priv); +} + +static int realtek_smi_write_byte_noack(struct realtek_priv *priv, u8 data) +{ + realtek_smi_write_bits(priv, data, 8); + return 0; +} + +static int realtek_smi_read_byte0(struct realtek_priv *priv, u8 *data) +{ + u32 t; + + /* Read data */ + realtek_smi_read_bits(priv, 8, &t); + *data = (t & 0xff); + + /* Send an ACK */ + realtek_smi_write_bits(priv, 0x00, 1); + + return 0; +} + +static int realtek_smi_read_byte1(struct realtek_priv *priv, u8 *data) +{ + u32 t; + + /* Read data */ + realtek_smi_read_bits(priv, 8, &t); + *data = (t & 0xff); + + /* Send an ACK */ + realtek_smi_write_bits(priv, 0x01, 1); + + return 0; +} + +static int realtek_smi_read_reg(struct realtek_priv *priv, u32 addr, u32 *data) +{ + unsigned long flags; + u8 lo = 0; + u8 hi = 0; + int ret; + + spin_lock_irqsave(&priv->lock, flags); + + realtek_smi_start(priv); + + /* Send READ command */ + ret = realtek_smi_write_byte(priv, priv->cmd_read); + if (ret) + goto out; + + /* Set ADDR[7:0] */ + ret = realtek_smi_write_byte(priv, addr & 0xff); + if (ret) + goto out; + + /* Set ADDR[15:8] */ + ret = realtek_smi_write_byte(priv, addr >> 8); + if (ret) + goto out; + + /* Read DATA[7:0] */ + realtek_smi_read_byte0(priv, &lo); + /* Read DATA[15:8] */ + realtek_smi_read_byte1(priv, &hi); + + *data = ((u32)lo) | (((u32)hi) << 8); + + ret = 0; + + out: + realtek_smi_stop(priv); + spin_unlock_irqrestore(&priv->lock, flags); + + return ret; +} + +static int realtek_smi_write_reg(struct realtek_priv *priv, + u32 addr, u32 data, bool ack) +{ + unsigned long flags; + int ret; + + spin_lock_irqsave(&priv->lock, flags); + + realtek_smi_start(priv); + + /* Send WRITE command */ + ret = realtek_smi_write_byte(priv, priv->cmd_write); + if (ret) + goto out; + + /* Set ADDR[7:0] */ + ret = realtek_smi_write_byte(priv, addr & 0xff); + if (ret) + goto out; + + /* Set ADDR[15:8] */ + ret = realtek_smi_write_byte(priv, addr >> 8); + if (ret) + goto out; + + /* Write DATA[7:0] */ + ret = realtek_smi_write_byte(priv, data & 0xff); + if (ret) + goto out; + + /* Write DATA[15:8] */ + if (ack) + ret = realtek_smi_write_byte(priv, data >> 8); + else + ret = realtek_smi_write_byte_noack(priv, data >> 8); + if (ret) + goto out; + + ret = 0; + + out: + realtek_smi_stop(priv); + spin_unlock_irqrestore(&priv->lock, flags); + + return ret; +} + +/* There is one single case when we need to use this accessor and that + * is when issueing soft reset. Since the device reset as soon as we write + * that bit, no ACK will come back for natural reasons. + */ +static int realtek_smi_write_reg_noack(void *ctx, u32 reg, u32 val) +{ + return realtek_smi_write_reg(ctx, reg, val, false); +} + +/* Regmap accessors */ + +static int realtek_smi_write(void *ctx, u32 reg, u32 val) +{ + struct realtek_priv *priv = ctx; + + return realtek_smi_write_reg(priv, reg, val, true); +} + +static int realtek_smi_read(void *ctx, u32 reg, u32 *val) +{ + struct realtek_priv *priv = ctx; + + return realtek_smi_read_reg(priv, reg, val); +} + +static void realtek_smi_lock(void *ctx) +{ + struct realtek_priv *priv = ctx; + + mutex_lock(&priv->map_lock); +} + +static void realtek_smi_unlock(void *ctx) +{ + struct realtek_priv *priv = ctx; + + mutex_unlock(&priv->map_lock); +} + +static const struct regmap_config realtek_smi_regmap_config = { + .reg_bits = 10, /* A4..A0 R4..R0 */ + .val_bits = 16, + .reg_stride = 1, + /* PHY regs are at 0x8000 */ + .max_register = 0xffff, + .reg_format_endian = REGMAP_ENDIAN_BIG, + .reg_read = realtek_smi_read, + .reg_write = realtek_smi_write, + .cache_type = REGCACHE_NONE, + .lock = realtek_smi_lock, + .unlock = realtek_smi_unlock, +}; + +static const struct regmap_config realtek_smi_nolock_regmap_config = { + .reg_bits = 10, /* A4..A0 R4..R0 */ + .val_bits = 16, + .reg_stride = 1, + /* PHY regs are at 0x8000 */ + .max_register = 0xffff, + .reg_format_endian = REGMAP_ENDIAN_BIG, + .reg_read = realtek_smi_read, + .reg_write = realtek_smi_write, + .cache_type = REGCACHE_NONE, + .disable_locking = true, +}; + +static int realtek_smi_mdio_read(struct mii_bus *bus, int addr, int regnum) +{ + struct realtek_priv *priv = bus->priv; + + return priv->ops->phy_read(priv, addr, regnum); +} + +static int realtek_smi_mdio_write(struct mii_bus *bus, int addr, int regnum, + u16 val) +{ + struct realtek_priv *priv = bus->priv; + + return priv->ops->phy_write(priv, addr, regnum, val); +} + +static int realtek_smi_setup_mdio(struct dsa_switch *ds) +{ + struct realtek_priv *priv = ds->priv; + struct device_node *mdio_np; + int ret; + + mdio_np = of_get_compatible_child(priv->dev->of_node, "realtek,smi-mdio"); + if (!mdio_np) { + dev_err(priv->dev, "no MDIO bus node\n"); + return -ENODEV; + } + + priv->slave_mii_bus = devm_mdiobus_alloc(priv->dev); + if (!priv->slave_mii_bus) { + ret = -ENOMEM; + goto err_put_node; + } + priv->slave_mii_bus->priv = priv; + priv->slave_mii_bus->name = "SMI slave MII"; + priv->slave_mii_bus->read = realtek_smi_mdio_read; + priv->slave_mii_bus->write = realtek_smi_mdio_write; + snprintf(priv->slave_mii_bus->id, MII_BUS_ID_SIZE, "SMI-%d", + ds->index); + priv->slave_mii_bus->dev.of_node = mdio_np; + priv->slave_mii_bus->parent = priv->dev; + ds->slave_mii_bus = priv->slave_mii_bus; + + ret = devm_of_mdiobus_register(priv->dev, priv->slave_mii_bus, mdio_np); + if (ret) { + dev_err(priv->dev, "unable to register MDIO bus %s\n", + priv->slave_mii_bus->id); + goto err_put_node; + } + + return 0; + +err_put_node: + of_node_put(mdio_np); + + return ret; +} + +static int realtek_smi_probe(struct platform_device *pdev) +{ + const struct realtek_variant *var; + struct device *dev = &pdev->dev; + struct realtek_priv *priv; + struct regmap_config rc; + struct device_node *np; + int ret; + + var = of_device_get_match_data(dev); + np = dev->of_node; + + priv = devm_kzalloc(dev, sizeof(*priv) + var->chip_data_sz, GFP_KERNEL); + if (!priv) + return -ENOMEM; + priv->chip_data = (void *)priv + sizeof(*priv); + + mutex_init(&priv->map_lock); + + rc = realtek_smi_regmap_config; + rc.lock_arg = priv; + priv->map = devm_regmap_init(dev, NULL, priv, &rc); + if (IS_ERR(priv->map)) { + ret = PTR_ERR(priv->map); + dev_err(dev, "regmap init failed: %d\n", ret); + return ret; + } + + rc = realtek_smi_nolock_regmap_config; + priv->map_nolock = devm_regmap_init(dev, NULL, priv, &rc); + if (IS_ERR(priv->map_nolock)) { + ret = PTR_ERR(priv->map_nolock); + dev_err(dev, "regmap init failed: %d\n", ret); + return ret; + } + + /* Link forward and backward */ + priv->dev = dev; + priv->clk_delay = var->clk_delay; + priv->cmd_read = var->cmd_read; + priv->cmd_write = var->cmd_write; + priv->ops = var->ops; + + priv->setup_interface = realtek_smi_setup_mdio; + priv->write_reg_noack = realtek_smi_write_reg_noack; + + dev_set_drvdata(dev, priv); + spin_lock_init(&priv->lock); + + /* TODO: if power is software controlled, set up any regulators here */ + + priv->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(priv->reset)) { + dev_err(dev, "failed to get RESET GPIO\n"); + return PTR_ERR(priv->reset); + } + if (priv->reset) { + gpiod_set_value(priv->reset, 1); + dev_dbg(dev, "asserted RESET\n"); + msleep(REALTEK_HW_STOP_DELAY); + gpiod_set_value(priv->reset, 0); + msleep(REALTEK_HW_START_DELAY); + dev_dbg(dev, "deasserted RESET\n"); + } + + /* Fetch MDIO pins */ + priv->mdc = devm_gpiod_get_optional(dev, "mdc", GPIOD_OUT_LOW); + if (IS_ERR(priv->mdc)) + return PTR_ERR(priv->mdc); + priv->mdio = devm_gpiod_get_optional(dev, "mdio", GPIOD_OUT_LOW); + if (IS_ERR(priv->mdio)) + return PTR_ERR(priv->mdio); + + priv->leds_disabled = of_property_read_bool(np, "realtek,disable-leds"); + + ret = priv->ops->detect(priv); + if (ret) { + dev_err(dev, "unable to detect switch\n"); + return ret; + } + + priv->ds = devm_kzalloc(dev, sizeof(*priv->ds), GFP_KERNEL); + if (!priv->ds) + return -ENOMEM; + + priv->ds->dev = dev; + priv->ds->num_ports = priv->num_ports; + priv->ds->priv = priv; + + priv->ds->ops = var->ds_ops_smi; + ret = dsa_register_switch(priv->ds); + if (ret) { + dev_err_probe(dev, ret, "unable to register switch\n"); + return ret; + } + return 0; +} + +static int realtek_smi_remove(struct platform_device *pdev) +{ + struct realtek_priv *priv = platform_get_drvdata(pdev); + + if (!priv) + return 0; + + dsa_unregister_switch(priv->ds); + if (priv->slave_mii_bus) + of_node_put(priv->slave_mii_bus->dev.of_node); + + /* leave the device reset asserted */ + if (priv->reset) + gpiod_set_value(priv->reset, 1); + + return 0; +} + +static void realtek_smi_shutdown(struct platform_device *pdev) +{ + struct realtek_priv *priv = platform_get_drvdata(pdev); + + if (!priv) + return; + + dsa_switch_shutdown(priv->ds); + + platform_set_drvdata(pdev, NULL); +} + +static const struct of_device_id realtek_smi_of_match[] = { +#if IS_ENABLED(CONFIG_NET_DSA_REALTEK_RTL8366RB) + { + .compatible = "realtek,rtl8366rb", + .data = &rtl8366rb_variant, + }, +#endif +#if IS_ENABLED(CONFIG_NET_DSA_REALTEK_RTL8365MB) + { + .compatible = "realtek,rtl8365mb", + .data = &rtl8365mb_variant, + }, +#endif + { /* sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, realtek_smi_of_match); + +static struct platform_driver realtek_smi_driver = { + .driver = { + .name = "realtek-smi", + .of_match_table = of_match_ptr(realtek_smi_of_match), + }, + .probe = realtek_smi_probe, + .remove = realtek_smi_remove, + .shutdown = realtek_smi_shutdown, +}; +module_platform_driver(realtek_smi_driver); + +MODULE_AUTHOR("Linus Walleij <linus.walleij@linaro.org>"); +MODULE_DESCRIPTION("Driver for Realtek ethernet switch connected via SMI interface"); +MODULE_LICENSE("GPL"); diff --git a/drivers/net/dsa/realtek/realtek.h b/drivers/net/dsa/realtek/realtek.h new file mode 100644 index 000000000000..4fa7c6ba874a --- /dev/null +++ b/drivers/net/dsa/realtek/realtek.h @@ -0,0 +1,150 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* Realtek SMI interface driver defines + * + * Copyright (C) 2017 Linus Walleij <linus.walleij@linaro.org> + * Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org> + */ + +#ifndef _REALTEK_H +#define _REALTEK_H + +#include <linux/phy.h> +#include <linux/platform_device.h> +#include <linux/gpio/consumer.h> +#include <net/dsa.h> + +#define REALTEK_HW_STOP_DELAY 25 /* msecs */ +#define REALTEK_HW_START_DELAY 100 /* msecs */ + +struct realtek_ops; +struct dentry; +struct inode; +struct file; + +struct rtl8366_mib_counter { + unsigned int base; + unsigned int offset; + unsigned int length; + const char *name; +}; + +/* + * struct rtl8366_vlan_mc - Virtual LAN member configuration + */ +struct rtl8366_vlan_mc { + u16 vid; + u16 untag; + u16 member; + u8 fid; + u8 priority; +}; + +struct rtl8366_vlan_4k { + u16 vid; + u16 untag; + u16 member; + u8 fid; +}; + +struct realtek_priv { + struct device *dev; + struct gpio_desc *reset; + struct gpio_desc *mdc; + struct gpio_desc *mdio; + struct regmap *map; + struct regmap *map_nolock; + struct mutex map_lock; + struct mii_bus *slave_mii_bus; + struct mii_bus *bus; + int mdio_addr; + + unsigned int clk_delay; + u8 cmd_read; + u8 cmd_write; + spinlock_t lock; /* Locks around command writes */ + struct dsa_switch *ds; + struct irq_domain *irqdomain; + bool leds_disabled; + + unsigned int cpu_port; + unsigned int num_ports; + unsigned int num_vlan_mc; + unsigned int num_mib_counters; + struct rtl8366_mib_counter *mib_counters; + + const struct realtek_ops *ops; + int (*setup_interface)(struct dsa_switch *ds); + int (*write_reg_noack)(void *ctx, u32 addr, u32 data); + + int vlan_enabled; + int vlan4k_enabled; + + char buf[4096]; + void *chip_data; /* Per-chip extra variant data */ +}; + +/* + * struct realtek_ops - vtable for the per-SMI-chiptype operations + * @detect: detects the chiptype + */ +struct realtek_ops { + int (*detect)(struct realtek_priv *priv); + int (*reset_chip)(struct realtek_priv *priv); + int (*setup)(struct realtek_priv *priv); + void (*cleanup)(struct realtek_priv *priv); + int (*get_mib_counter)(struct realtek_priv *priv, + int port, + struct rtl8366_mib_counter *mib, + u64 *mibvalue); + int (*get_vlan_mc)(struct realtek_priv *priv, u32 index, + struct rtl8366_vlan_mc *vlanmc); + int (*set_vlan_mc)(struct realtek_priv *priv, u32 index, + const struct rtl8366_vlan_mc *vlanmc); + int (*get_vlan_4k)(struct realtek_priv *priv, u32 vid, + struct rtl8366_vlan_4k *vlan4k); + int (*set_vlan_4k)(struct realtek_priv *priv, + const struct rtl8366_vlan_4k *vlan4k); + int (*get_mc_index)(struct realtek_priv *priv, int port, int *val); + int (*set_mc_index)(struct realtek_priv *priv, int port, int index); + bool (*is_vlan_valid)(struct realtek_priv *priv, unsigned int vlan); + int (*enable_vlan)(struct realtek_priv *priv, bool enable); + int (*enable_vlan4k)(struct realtek_priv *priv, bool enable); + int (*enable_port)(struct realtek_priv *priv, int port, bool enable); + int (*phy_read)(struct realtek_priv *priv, int phy, int regnum); + int (*phy_write)(struct realtek_priv *priv, int phy, int regnum, + u16 val); +}; + +struct realtek_variant { + const struct dsa_switch_ops *ds_ops_smi; + const struct dsa_switch_ops *ds_ops_mdio; + const struct realtek_ops *ops; + unsigned int clk_delay; + u8 cmd_read; + u8 cmd_write; + size_t chip_data_sz; +}; + +/* RTL8366 library helpers */ +int rtl8366_mc_is_used(struct realtek_priv *priv, int mc_index, int *used); +int rtl8366_set_vlan(struct realtek_priv *priv, int vid, u32 member, + u32 untag, u32 fid); +int rtl8366_set_pvid(struct realtek_priv *priv, unsigned int port, + unsigned int vid); +int rtl8366_enable_vlan4k(struct realtek_priv *priv, bool enable); +int rtl8366_enable_vlan(struct realtek_priv *priv, bool enable); +int rtl8366_reset_vlan(struct realtek_priv *priv); +int rtl8366_vlan_add(struct dsa_switch *ds, int port, + const struct switchdev_obj_port_vlan *vlan, + struct netlink_ext_ack *extack); +int rtl8366_vlan_del(struct dsa_switch *ds, int port, + const struct switchdev_obj_port_vlan *vlan); +void rtl8366_get_strings(struct dsa_switch *ds, int port, u32 stringset, + uint8_t *data); +int rtl8366_get_sset_count(struct dsa_switch *ds, int port, int sset); +void rtl8366_get_ethtool_stats(struct dsa_switch *ds, int port, uint64_t *data); + +extern const struct realtek_variant rtl8366rb_variant; +extern const struct realtek_variant rtl8365mb_variant; + +#endif /* _REALTEK_H */ diff --git a/drivers/net/dsa/realtek/rtl8365mb.c b/drivers/net/dsa/realtek/rtl8365mb.c new file mode 100644 index 000000000000..da31d8b839ac --- /dev/null +++ b/drivers/net/dsa/realtek/rtl8365mb.c @@ -0,0 +1,2148 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Realtek SMI subdriver for the Realtek RTL8365MB-VC ethernet switch. + * + * Copyright (C) 2021 Alvin Šipraga <alsi@bang-olufsen.dk> + * Copyright (C) 2021 Michael Rasmussen <mir@bang-olufsen.dk> + * + * The RTL8365MB-VC is a 4+1 port 10/100/1000M switch controller. It includes 4 + * integrated PHYs for the user facing ports, and an extension interface which + * can be connected to the CPU - or another PHY - via either MII, RMII, or + * RGMII. The switch is configured via the Realtek Simple Management Interface + * (SMI), which uses the MDIO/MDC lines. + * + * Below is a simplified block diagram of the chip and its relevant interfaces. + * + * .-----------------------------------. + * | | + * UTP <---------------> Giga PHY <-> PCS <-> P0 GMAC | + * UTP <---------------> Giga PHY <-> PCS <-> P1 GMAC | + * UTP <---------------> Giga PHY <-> PCS <-> P2 GMAC | + * UTP <---------------> Giga PHY <-> PCS <-> P3 GMAC | + * | | + * CPU/PHY <-MII/RMII/RGMII---> Extension <---> Extension | + * | interface 1 GMAC 1 | + * | | + * SMI driver/ <-MDC/SCL---> Management ~~~~~~~~~~~~~~ | + * EEPROM <-MDIO/SDA--> interface ~REALTEK ~~~~~ | + * | ~RTL8365MB ~~~ | + * | ~GXXXC TAIWAN~ | + * GPIO <--------------> Reset ~~~~~~~~~~~~~~ | + * | | + * Interrupt <----------> Link UP/DOWN events | + * controller | | + * '-----------------------------------' + * + * The driver uses DSA to integrate the 4 user and 1 extension ports into the + * kernel. Netdevices are created for the user ports, as are PHY devices for + * their integrated PHYs. The device tree firmware should also specify the link + * partner of the extension port - either via a fixed-link or other phy-handle. + * See the device tree bindings for more detailed information. Note that the + * driver has only been tested with a fixed-link, but in principle it should not + * matter. + * + * NOTE: Currently, only the RGMII interface is implemented in this driver. + * + * The interrupt line is asserted on link UP/DOWN events. The driver creates a + * custom irqchip to handle this interrupt and demultiplex the events by reading + * the status registers via SMI. Interrupts are then propagated to the relevant + * PHY device. + * + * The EEPROM contains initial register values which the chip will read over I2C + * upon hardware reset. It is also possible to omit the EEPROM. In both cases, + * the driver will manually reprogram some registers using jam tables to reach + * an initial state defined by the vendor driver. + * + * This Linux driver is written based on an OS-agnostic vendor driver from + * Realtek. The reference GPL-licensed sources can be found in the OpenWrt + * source tree under the name rtl8367c. The vendor driver claims to support a + * number of similar switch controllers from Realtek, but the only hardware we + * have is the RTL8365MB-VC. Moreover, there does not seem to be any chip under + * the name RTL8367C. Although one wishes that the 'C' stood for some kind of + * common hardware revision, there exist examples of chips with the suffix -VC + * which are explicitly not supported by the rtl8367c driver and which instead + * require the rtl8367d vendor driver. With all this uncertainty, the driver has + * been modestly named rtl8365mb. Future implementors may wish to rename things + * accordingly. + * + * In the same family of chips, some carry up to 8 user ports and up to 2 + * extension ports. Where possible this driver tries to make things generic, but + * more work must be done to support these configurations. According to + * documentation from Realtek, the family should include the following chips: + * + * - RTL8363NB + * - RTL8363NB-VB + * - RTL8363SC + * - RTL8363SC-VB + * - RTL8364NB + * - RTL8364NB-VB + * - RTL8365MB-VC + * - RTL8366SC + * - RTL8367RB-VB + * - RTL8367SB + * - RTL8367S + * - RTL8370MB + * - RTL8310SR + * + * Some of the register logic for these additional chips has been skipped over + * while implementing this driver. It is therefore not possible to assume that + * things will work out-of-the-box for other chips, and a careful review of the + * vendor driver may be needed to expand support. The RTL8365MB-VC seems to be + * one of the simpler chips. + */ + +#include <linux/bitfield.h> +#include <linux/bitops.h> +#include <linux/interrupt.h> +#include <linux/irqdomain.h> +#include <linux/mutex.h> +#include <linux/of_irq.h> +#include <linux/regmap.h> +#include <linux/if_bridge.h> + +#include "realtek.h" + +/* Family-specific data and limits */ +#define RTL8365MB_PHYADDRMAX 7 +#define RTL8365MB_NUM_PHYREGS 32 +#define RTL8365MB_PHYREGMAX (RTL8365MB_NUM_PHYREGS - 1) +#define RTL8365MB_MAX_NUM_PORTS 11 +#define RTL8365MB_MAX_NUM_EXTINTS 3 +#define RTL8365MB_LEARN_LIMIT_MAX 2112 + +/* Chip identification registers */ +#define RTL8365MB_CHIP_ID_REG 0x1300 + +#define RTL8365MB_CHIP_VER_REG 0x1301 + +#define RTL8365MB_MAGIC_REG 0x13C2 +#define RTL8365MB_MAGIC_VALUE 0x0249 + +/* Chip reset register */ +#define RTL8365MB_CHIP_RESET_REG 0x1322 +#define RTL8365MB_CHIP_RESET_SW_MASK 0x0002 +#define RTL8365MB_CHIP_RESET_HW_MASK 0x0001 + +/* Interrupt polarity register */ +#define RTL8365MB_INTR_POLARITY_REG 0x1100 +#define RTL8365MB_INTR_POLARITY_MASK 0x0001 +#define RTL8365MB_INTR_POLARITY_HIGH 0 +#define RTL8365MB_INTR_POLARITY_LOW 1 + +/* Interrupt control/status register - enable/check specific interrupt types */ +#define RTL8365MB_INTR_CTRL_REG 0x1101 +#define RTL8365MB_INTR_STATUS_REG 0x1102 +#define RTL8365MB_INTR_SLIENT_START_2_MASK 0x1000 +#define RTL8365MB_INTR_SLIENT_START_MASK 0x0800 +#define RTL8365MB_INTR_ACL_ACTION_MASK 0x0200 +#define RTL8365MB_INTR_CABLE_DIAG_FIN_MASK 0x0100 +#define RTL8365MB_INTR_INTERRUPT_8051_MASK 0x0080 +#define RTL8365MB_INTR_LOOP_DETECTION_MASK 0x0040 +#define RTL8365MB_INTR_GREEN_TIMER_MASK 0x0020 +#define RTL8365MB_INTR_SPECIAL_CONGEST_MASK 0x0010 +#define RTL8365MB_INTR_SPEED_CHANGE_MASK 0x0008 +#define RTL8365MB_INTR_LEARN_OVER_MASK 0x0004 +#define RTL8365MB_INTR_METER_EXCEEDED_MASK 0x0002 +#define RTL8365MB_INTR_LINK_CHANGE_MASK 0x0001 +#define RTL8365MB_INTR_ALL_MASK \ + (RTL8365MB_INTR_SLIENT_START_2_MASK | \ + RTL8365MB_INTR_SLIENT_START_MASK | \ + RTL8365MB_INTR_ACL_ACTION_MASK | \ + RTL8365MB_INTR_CABLE_DIAG_FIN_MASK | \ + RTL8365MB_INTR_INTERRUPT_8051_MASK | \ + RTL8365MB_INTR_LOOP_DETECTION_MASK | \ + RTL8365MB_INTR_GREEN_TIMER_MASK | \ + RTL8365MB_INTR_SPECIAL_CONGEST_MASK | \ + RTL8365MB_INTR_SPEED_CHANGE_MASK | \ + RTL8365MB_INTR_LEARN_OVER_MASK | \ + RTL8365MB_INTR_METER_EXCEEDED_MASK | \ + RTL8365MB_INTR_LINK_CHANGE_MASK) + +/* Per-port interrupt type status registers */ +#define RTL8365MB_PORT_LINKDOWN_IND_REG 0x1106 +#define RTL8365MB_PORT_LINKDOWN_IND_MASK 0x07FF + +#define RTL8365MB_PORT_LINKUP_IND_REG 0x1107 +#define RTL8365MB_PORT_LINKUP_IND_MASK 0x07FF + +/* PHY indirect access registers */ +#define RTL8365MB_INDIRECT_ACCESS_CTRL_REG 0x1F00 +#define RTL8365MB_INDIRECT_ACCESS_CTRL_RW_MASK 0x0002 +#define RTL8365MB_INDIRECT_ACCESS_CTRL_RW_READ 0 +#define RTL8365MB_INDIRECT_ACCESS_CTRL_RW_WRITE 1 +#define RTL8365MB_INDIRECT_ACCESS_CTRL_CMD_MASK 0x0001 +#define RTL8365MB_INDIRECT_ACCESS_CTRL_CMD_VALUE 1 +#define RTL8365MB_INDIRECT_ACCESS_STATUS_REG 0x1F01 +#define RTL8365MB_INDIRECT_ACCESS_ADDRESS_REG 0x1F02 +#define RTL8365MB_INDIRECT_ACCESS_ADDRESS_OCPADR_5_1_MASK GENMASK(4, 0) +#define RTL8365MB_INDIRECT_ACCESS_ADDRESS_PHYNUM_MASK GENMASK(7, 5) +#define RTL8365MB_INDIRECT_ACCESS_ADDRESS_OCPADR_9_6_MASK GENMASK(11, 8) +#define RTL8365MB_PHY_BASE 0x2000 +#define RTL8365MB_INDIRECT_ACCESS_WRITE_DATA_REG 0x1F03 +#define RTL8365MB_INDIRECT_ACCESS_READ_DATA_REG 0x1F04 + +/* PHY OCP address prefix register */ +#define RTL8365MB_GPHY_OCP_MSB_0_REG 0x1D15 +#define RTL8365MB_GPHY_OCP_MSB_0_CFG_CPU_OCPADR_MASK 0x0FC0 +#define RTL8365MB_PHY_OCP_ADDR_PREFIX_MASK 0xFC00 + +/* The PHY OCP addresses of PHY registers 0~31 start here */ +#define RTL8365MB_PHY_OCP_ADDR_PHYREG_BASE 0xA400 + +/* External interface port mode values - used in DIGITAL_INTERFACE_SELECT */ +#define RTL8365MB_EXT_PORT_MODE_DISABLE 0 +#define RTL8365MB_EXT_PORT_MODE_RGMII 1 +#define RTL8365MB_EXT_PORT_MODE_MII_MAC 2 +#define RTL8365MB_EXT_PORT_MODE_MII_PHY 3 +#define RTL8365MB_EXT_PORT_MODE_TMII_MAC 4 +#define RTL8365MB_EXT_PORT_MODE_TMII_PHY 5 +#define RTL8365MB_EXT_PORT_MODE_GMII 6 +#define RTL8365MB_EXT_PORT_MODE_RMII_MAC 7 +#define RTL8365MB_EXT_PORT_MODE_RMII_PHY 8 +#define RTL8365MB_EXT_PORT_MODE_SGMII 9 +#define RTL8365MB_EXT_PORT_MODE_HSGMII 10 +#define RTL8365MB_EXT_PORT_MODE_1000X_100FX 11 +#define RTL8365MB_EXT_PORT_MODE_1000X 12 +#define RTL8365MB_EXT_PORT_MODE_100FX 13 + +/* External interface mode configuration registers 0~1 */ +#define RTL8365MB_DIGITAL_INTERFACE_SELECT_REG0 0x1305 /* EXT1 */ +#define RTL8365MB_DIGITAL_INTERFACE_SELECT_REG1 0x13C3 /* EXT2 */ +#define RTL8365MB_DIGITAL_INTERFACE_SELECT_REG(_extint) \ + ((_extint) == 1 ? RTL8365MB_DIGITAL_INTERFACE_SELECT_REG0 : \ + (_extint) == 2 ? RTL8365MB_DIGITAL_INTERFACE_SELECT_REG1 : \ + 0x0) +#define RTL8365MB_DIGITAL_INTERFACE_SELECT_MODE_MASK(_extint) \ + (0xF << (((_extint) % 2))) +#define RTL8365MB_DIGITAL_INTERFACE_SELECT_MODE_OFFSET(_extint) \ + (((_extint) % 2) * 4) + +/* External interface RGMII TX/RX delay configuration registers 0~2 */ +#define RTL8365MB_EXT_RGMXF_REG0 0x1306 /* EXT0 */ +#define RTL8365MB_EXT_RGMXF_REG1 0x1307 /* EXT1 */ +#define RTL8365MB_EXT_RGMXF_REG2 0x13C5 /* EXT2 */ +#define RTL8365MB_EXT_RGMXF_REG(_extint) \ + ((_extint) == 0 ? RTL8365MB_EXT_RGMXF_REG0 : \ + (_extint) == 1 ? RTL8365MB_EXT_RGMXF_REG1 : \ + (_extint) == 2 ? RTL8365MB_EXT_RGMXF_REG2 : \ + 0x0) +#define RTL8365MB_EXT_RGMXF_RXDELAY_MASK 0x0007 +#define RTL8365MB_EXT_RGMXF_TXDELAY_MASK 0x0008 + +/* External interface port speed values - used in DIGITAL_INTERFACE_FORCE */ +#define RTL8365MB_PORT_SPEED_10M 0 +#define RTL8365MB_PORT_SPEED_100M 1 +#define RTL8365MB_PORT_SPEED_1000M 2 + +/* External interface force configuration registers 0~2 */ +#define RTL8365MB_DIGITAL_INTERFACE_FORCE_REG0 0x1310 /* EXT0 */ +#define RTL8365MB_DIGITAL_INTERFACE_FORCE_REG1 0x1311 /* EXT1 */ +#define RTL8365MB_DIGITAL_INTERFACE_FORCE_REG2 0x13C4 /* EXT2 */ +#define RTL8365MB_DIGITAL_INTERFACE_FORCE_REG(_extint) \ + ((_extint) == 0 ? RTL8365MB_DIGITAL_INTERFACE_FORCE_REG0 : \ + (_extint) == 1 ? RTL8365MB_DIGITAL_INTERFACE_FORCE_REG1 : \ + (_extint) == 2 ? RTL8365MB_DIGITAL_INTERFACE_FORCE_REG2 : \ + 0x0) +#define RTL8365MB_DIGITAL_INTERFACE_FORCE_EN_MASK 0x1000 +#define RTL8365MB_DIGITAL_INTERFACE_FORCE_NWAY_MASK 0x0080 +#define RTL8365MB_DIGITAL_INTERFACE_FORCE_TXPAUSE_MASK 0x0040 +#define RTL8365MB_DIGITAL_INTERFACE_FORCE_RXPAUSE_MASK 0x0020 +#define RTL8365MB_DIGITAL_INTERFACE_FORCE_LINK_MASK 0x0010 +#define RTL8365MB_DIGITAL_INTERFACE_FORCE_DUPLEX_MASK 0x0004 +#define RTL8365MB_DIGITAL_INTERFACE_FORCE_SPEED_MASK 0x0003 + +/* CPU port mask register - controls which ports are treated as CPU ports */ +#define RTL8365MB_CPU_PORT_MASK_REG 0x1219 +#define RTL8365MB_CPU_PORT_MASK_MASK 0x07FF + +/* CPU control register */ +#define RTL8365MB_CPU_CTRL_REG 0x121A +#define RTL8365MB_CPU_CTRL_TRAP_PORT_EXT_MASK 0x0400 +#define RTL8365MB_CPU_CTRL_TAG_FORMAT_MASK 0x0200 +#define RTL8365MB_CPU_CTRL_RXBYTECOUNT_MASK 0x0080 +#define RTL8365MB_CPU_CTRL_TAG_POSITION_MASK 0x0040 +#define RTL8365MB_CPU_CTRL_TRAP_PORT_MASK 0x0038 +#define RTL8365MB_CPU_CTRL_INSERTMODE_MASK 0x0006 +#define RTL8365MB_CPU_CTRL_EN_MASK 0x0001 + +/* Maximum packet length register */ +#define RTL8365MB_CFG0_MAX_LEN_REG 0x088C +#define RTL8365MB_CFG0_MAX_LEN_MASK 0x3FFF + +/* Port learning limit registers */ +#define RTL8365MB_LUT_PORT_LEARN_LIMIT_BASE 0x0A20 +#define RTL8365MB_LUT_PORT_LEARN_LIMIT_REG(_physport) \ + (RTL8365MB_LUT_PORT_LEARN_LIMIT_BASE + (_physport)) + +/* Port isolation (forwarding mask) registers */ +#define RTL8365MB_PORT_ISOLATION_REG_BASE 0x08A2 +#define RTL8365MB_PORT_ISOLATION_REG(_physport) \ + (RTL8365MB_PORT_ISOLATION_REG_BASE + (_physport)) +#define RTL8365MB_PORT_ISOLATION_MASK 0x07FF + +/* MSTP port state registers - indexed by tree instance */ +#define RTL8365MB_MSTI_CTRL_BASE 0x0A00 +#define RTL8365MB_MSTI_CTRL_REG(_msti, _physport) \ + (RTL8365MB_MSTI_CTRL_BASE + ((_msti) << 1) + ((_physport) >> 3)) +#define RTL8365MB_MSTI_CTRL_PORT_STATE_OFFSET(_physport) ((_physport) << 1) +#define RTL8365MB_MSTI_CTRL_PORT_STATE_MASK(_physport) \ + (0x3 << RTL8365MB_MSTI_CTRL_PORT_STATE_OFFSET((_physport))) + +/* MIB counter value registers */ +#define RTL8365MB_MIB_COUNTER_BASE 0x1000 +#define RTL8365MB_MIB_COUNTER_REG(_x) (RTL8365MB_MIB_COUNTER_BASE + (_x)) + +/* MIB counter address register */ +#define RTL8365MB_MIB_ADDRESS_REG 0x1004 +#define RTL8365MB_MIB_ADDRESS_PORT_OFFSET 0x007C +#define RTL8365MB_MIB_ADDRESS(_p, _x) \ + (((RTL8365MB_MIB_ADDRESS_PORT_OFFSET) * (_p) + (_x)) >> 2) + +#define RTL8365MB_MIB_CTRL0_REG 0x1005 +#define RTL8365MB_MIB_CTRL0_RESET_MASK 0x0002 +#define RTL8365MB_MIB_CTRL0_BUSY_MASK 0x0001 + +/* The DSA callback .get_stats64 runs in atomic context, so we are not allowed + * to block. On the other hand, accessing MIB counters absolutely requires us to + * block. The solution is thus to schedule work which polls the MIB counters + * asynchronously and updates some private data, which the callback can then + * fetch atomically. Three seconds should be a good enough polling interval. + */ +#define RTL8365MB_STATS_INTERVAL_JIFFIES (3 * HZ) + +enum rtl8365mb_mib_counter_index { + RTL8365MB_MIB_ifInOctets, + RTL8365MB_MIB_dot3StatsFCSErrors, + RTL8365MB_MIB_dot3StatsSymbolErrors, + RTL8365MB_MIB_dot3InPauseFrames, + RTL8365MB_MIB_dot3ControlInUnknownOpcodes, + RTL8365MB_MIB_etherStatsFragments, + RTL8365MB_MIB_etherStatsJabbers, + RTL8365MB_MIB_ifInUcastPkts, + RTL8365MB_MIB_etherStatsDropEvents, + RTL8365MB_MIB_ifInMulticastPkts, + RTL8365MB_MIB_ifInBroadcastPkts, + RTL8365MB_MIB_inMldChecksumError, + RTL8365MB_MIB_inIgmpChecksumError, + RTL8365MB_MIB_inMldSpecificQuery, + RTL8365MB_MIB_inMldGeneralQuery, + RTL8365MB_MIB_inIgmpSpecificQuery, + RTL8365MB_MIB_inIgmpGeneralQuery, + RTL8365MB_MIB_inMldLeaves, + RTL8365MB_MIB_inIgmpLeaves, + RTL8365MB_MIB_etherStatsOctets, + RTL8365MB_MIB_etherStatsUnderSizePkts, + RTL8365MB_MIB_etherOversizeStats, + RTL8365MB_MIB_etherStatsPkts64Octets, + RTL8365MB_MIB_etherStatsPkts65to127Octets, + RTL8365MB_MIB_etherStatsPkts128to255Octets, + RTL8365MB_MIB_etherStatsPkts256to511Octets, + RTL8365MB_MIB_etherStatsPkts512to1023Octets, + RTL8365MB_MIB_etherStatsPkts1024to1518Octets, + RTL8365MB_MIB_ifOutOctets, + RTL8365MB_MIB_dot3StatsSingleCollisionFrames, + RTL8365MB_MIB_dot3StatsMultipleCollisionFrames, + RTL8365MB_MIB_dot3StatsDeferredTransmissions, + RTL8365MB_MIB_dot3StatsLateCollisions, + RTL8365MB_MIB_etherStatsCollisions, + RTL8365MB_MIB_dot3StatsExcessiveCollisions, + RTL8365MB_MIB_dot3OutPauseFrames, + RTL8365MB_MIB_ifOutDiscards, + RTL8365MB_MIB_dot1dTpPortInDiscards, + RTL8365MB_MIB_ifOutUcastPkts, + RTL8365MB_MIB_ifOutMulticastPkts, + RTL8365MB_MIB_ifOutBroadcastPkts, + RTL8365MB_MIB_outOampduPkts, + RTL8365MB_MIB_inOampduPkts, + RTL8365MB_MIB_inIgmpJoinsSuccess, + RTL8365MB_MIB_inIgmpJoinsFail, + RTL8365MB_MIB_inMldJoinsSuccess, + RTL8365MB_MIB_inMldJoinsFail, + RTL8365MB_MIB_inReportSuppressionDrop, + RTL8365MB_MIB_inLeaveSuppressionDrop, + RTL8365MB_MIB_outIgmpReports, + RTL8365MB_MIB_outIgmpLeaves, + RTL8365MB_MIB_outIgmpGeneralQuery, + RTL8365MB_MIB_outIgmpSpecificQuery, + RTL8365MB_MIB_outMldReports, + RTL8365MB_MIB_outMldLeaves, + RTL8365MB_MIB_outMldGeneralQuery, + RTL8365MB_MIB_outMldSpecificQuery, + RTL8365MB_MIB_inKnownMulticastPkts, + RTL8365MB_MIB_END, +}; + +struct rtl8365mb_mib_counter { + u32 offset; + u32 length; + const char *name; +}; + +#define RTL8365MB_MAKE_MIB_COUNTER(_offset, _length, _name) \ + [RTL8365MB_MIB_ ## _name] = { _offset, _length, #_name } + +static struct rtl8365mb_mib_counter rtl8365mb_mib_counters[] = { + RTL8365MB_MAKE_MIB_COUNTER(0, 4, ifInOctets), + RTL8365MB_MAKE_MIB_COUNTER(4, 2, dot3StatsFCSErrors), + RTL8365MB_MAKE_MIB_COUNTER(6, 2, dot3StatsSymbolErrors), + RTL8365MB_MAKE_MIB_COUNTER(8, 2, dot3InPauseFrames), + RTL8365MB_MAKE_MIB_COUNTER(10, 2, dot3ControlInUnknownOpcodes), + RTL8365MB_MAKE_MIB_COUNTER(12, 2, etherStatsFragments), + RTL8365MB_MAKE_MIB_COUNTER(14, 2, etherStatsJabbers), + RTL8365MB_MAKE_MIB_COUNTER(16, 2, ifInUcastPkts), + RTL8365MB_MAKE_MIB_COUNTER(18, 2, etherStatsDropEvents), + RTL8365MB_MAKE_MIB_COUNTER(20, 2, ifInMulticastPkts), + RTL8365MB_MAKE_MIB_COUNTER(22, 2, ifInBroadcastPkts), + RTL8365MB_MAKE_MIB_COUNTER(24, 2, inMldChecksumError), + RTL8365MB_MAKE_MIB_COUNTER(26, 2, inIgmpChecksumError), + RTL8365MB_MAKE_MIB_COUNTER(28, 2, inMldSpecificQuery), + RTL8365MB_MAKE_MIB_COUNTER(30, 2, inMldGeneralQuery), + RTL8365MB_MAKE_MIB_COUNTER(32, 2, inIgmpSpecificQuery), + RTL8365MB_MAKE_MIB_COUNTER(34, 2, inIgmpGeneralQuery), + RTL8365MB_MAKE_MIB_COUNTER(36, 2, inMldLeaves), + RTL8365MB_MAKE_MIB_COUNTER(38, 2, inIgmpLeaves), + RTL8365MB_MAKE_MIB_COUNTER(40, 4, etherStatsOctets), + RTL8365MB_MAKE_MIB_COUNTER(44, 2, etherStatsUnderSizePkts), + RTL8365MB_MAKE_MIB_COUNTER(46, 2, etherOversizeStats), + RTL8365MB_MAKE_MIB_COUNTER(48, 2, etherStatsPkts64Octets), + RTL8365MB_MAKE_MIB_COUNTER(50, 2, etherStatsPkts65to127Octets), + RTL8365MB_MAKE_MIB_COUNTER(52, 2, etherStatsPkts128to255Octets), + RTL8365MB_MAKE_MIB_COUNTER(54, 2, etherStatsPkts256to511Octets), + RTL8365MB_MAKE_MIB_COUNTER(56, 2, etherStatsPkts512to1023Octets), + RTL8365MB_MAKE_MIB_COUNTER(58, 2, etherStatsPkts1024to1518Octets), + RTL8365MB_MAKE_MIB_COUNTER(60, 4, ifOutOctets), + RTL8365MB_MAKE_MIB_COUNTER(64, 2, dot3StatsSingleCollisionFrames), + RTL8365MB_MAKE_MIB_COUNTER(66, 2, dot3StatsMultipleCollisionFrames), + RTL8365MB_MAKE_MIB_COUNTER(68, 2, dot3StatsDeferredTransmissions), + RTL8365MB_MAKE_MIB_COUNTER(70, 2, dot3StatsLateCollisions), + RTL8365MB_MAKE_MIB_COUNTER(72, 2, etherStatsCollisions), + RTL8365MB_MAKE_MIB_COUNTER(74, 2, dot3StatsExcessiveCollisions), + RTL8365MB_MAKE_MIB_COUNTER(76, 2, dot3OutPauseFrames), + RTL8365MB_MAKE_MIB_COUNTER(78, 2, ifOutDiscards), + RTL8365MB_MAKE_MIB_COUNTER(80, 2, dot1dTpPortInDiscards), + RTL8365MB_MAKE_MIB_COUNTER(82, 2, ifOutUcastPkts), + RTL8365MB_MAKE_MIB_COUNTER(84, 2, ifOutMulticastPkts), + RTL8365MB_MAKE_MIB_COUNTER(86, 2, ifOutBroadcastPkts), + RTL8365MB_MAKE_MIB_COUNTER(88, 2, outOampduPkts), + RTL8365MB_MAKE_MIB_COUNTER(90, 2, inOampduPkts), + RTL8365MB_MAKE_MIB_COUNTER(92, 4, inIgmpJoinsSuccess), + RTL8365MB_MAKE_MIB_COUNTER(96, 2, inIgmpJoinsFail), + RTL8365MB_MAKE_MIB_COUNTER(98, 2, inMldJoinsSuccess), + RTL8365MB_MAKE_MIB_COUNTER(100, 2, inMldJoinsFail), + RTL8365MB_MAKE_MIB_COUNTER(102, 2, inReportSuppressionDrop), + RTL8365MB_MAKE_MIB_COUNTER(104, 2, inLeaveSuppressionDrop), + RTL8365MB_MAKE_MIB_COUNTER(106, 2, outIgmpReports), + RTL8365MB_MAKE_MIB_COUNTER(108, 2, outIgmpLeaves), + RTL8365MB_MAKE_MIB_COUNTER(110, 2, outIgmpGeneralQuery), + RTL8365MB_MAKE_MIB_COUNTER(112, 2, outIgmpSpecificQuery), + RTL8365MB_MAKE_MIB_COUNTER(114, 2, outMldReports), + RTL8365MB_MAKE_MIB_COUNTER(116, 2, outMldLeaves), + RTL8365MB_MAKE_MIB_COUNTER(118, 2, outMldGeneralQuery), + RTL8365MB_MAKE_MIB_COUNTER(120, 2, outMldSpecificQuery), + RTL8365MB_MAKE_MIB_COUNTER(122, 2, inKnownMulticastPkts), +}; + +static_assert(ARRAY_SIZE(rtl8365mb_mib_counters) == RTL8365MB_MIB_END); + +struct rtl8365mb_jam_tbl_entry { + u16 reg; + u16 val; +}; + +/* Lifted from the vendor driver sources */ +static const struct rtl8365mb_jam_tbl_entry rtl8365mb_init_jam_8365mb_vc[] = { + { 0x13EB, 0x15BB }, { 0x1303, 0x06D6 }, { 0x1304, 0x0700 }, + { 0x13E2, 0x003F }, { 0x13F9, 0x0090 }, { 0x121E, 0x03CA }, + { 0x1233, 0x0352 }, { 0x1237, 0x00A0 }, { 0x123A, 0x0030 }, + { 0x1239, 0x0084 }, { 0x0301, 0x1000 }, { 0x1349, 0x001F }, + { 0x18E0, 0x4004 }, { 0x122B, 0x241C }, { 0x1305, 0xC000 }, + { 0x13F0, 0x0000 }, +}; + +static const struct rtl8365mb_jam_tbl_entry rtl8365mb_init_jam_common[] = { + { 0x1200, 0x7FCB }, { 0x0884, 0x0003 }, { 0x06EB, 0x0001 }, + { 0x03Fa, 0x0007 }, { 0x08C8, 0x00C0 }, { 0x0A30, 0x020E }, + { 0x0800, 0x0000 }, { 0x0802, 0x0000 }, { 0x09DA, 0x0013 }, + { 0x1D32, 0x0002 }, +}; + +enum rtl8365mb_phy_interface_mode { + RTL8365MB_PHY_INTERFACE_MODE_INVAL = 0, + RTL8365MB_PHY_INTERFACE_MODE_INTERNAL = BIT(0), + RTL8365MB_PHY_INTERFACE_MODE_MII = BIT(1), + RTL8365MB_PHY_INTERFACE_MODE_TMII = BIT(2), + RTL8365MB_PHY_INTERFACE_MODE_RMII = BIT(3), + RTL8365MB_PHY_INTERFACE_MODE_RGMII = BIT(4), + RTL8365MB_PHY_INTERFACE_MODE_SGMII = BIT(5), + RTL8365MB_PHY_INTERFACE_MODE_HSGMII = BIT(6), +}; + +/** + * struct rtl8365mb_extint - external interface info + * @port: the port with an external interface + * @id: the external interface ID, which is either 0, 1, or 2 + * @supported_interfaces: a bitmask of supported PHY interface modes + * + * Represents a mapping: port -> { id, supported_interfaces }. To be embedded + * in &struct rtl8365mb_chip_info for every port with an external interface. + */ +struct rtl8365mb_extint { + int port; + int id; + unsigned int supported_interfaces; +}; + +/** + * struct rtl8365mb_chip_info - static chip-specific info + * @name: human-readable chip name + * @chip_id: chip identifier + * @chip_ver: chip silicon revision + * @extints: available external interfaces + * @jam_table: chip-specific initialization jam table + * @jam_size: size of the chip's jam table + * + * These data are specific to a given chip in the family of switches supported + * by this driver. When adding support for another chip in the family, a new + * chip info should be added to the rtl8365mb_chip_infos array. + */ +struct rtl8365mb_chip_info { + const char *name; + u32 chip_id; + u32 chip_ver; + const struct rtl8365mb_extint extints[RTL8365MB_MAX_NUM_EXTINTS]; + const struct rtl8365mb_jam_tbl_entry *jam_table; + size_t jam_size; +}; + +/* Chip info for each supported switch in the family */ +#define PHY_INTF(_mode) (RTL8365MB_PHY_INTERFACE_MODE_ ## _mode) +static const struct rtl8365mb_chip_info rtl8365mb_chip_infos[] = { + { + .name = "RTL8365MB-VC", + .chip_id = 0x6367, + .chip_ver = 0x0040, + .extints = { + { 6, 1, PHY_INTF(MII) | PHY_INTF(TMII) | + PHY_INTF(RMII) | PHY_INTF(RGMII) }, + }, + .jam_table = rtl8365mb_init_jam_8365mb_vc, + .jam_size = ARRAY_SIZE(rtl8365mb_init_jam_8365mb_vc), + }, + { + .name = "RTL8367S", + .chip_id = 0x6367, + .chip_ver = 0x00A0, + .extints = { + { 6, 1, PHY_INTF(SGMII) | PHY_INTF(HSGMII) }, + { 7, 2, PHY_INTF(MII) | PHY_INTF(TMII) | + PHY_INTF(RMII) | PHY_INTF(RGMII) }, + }, + .jam_table = rtl8365mb_init_jam_8365mb_vc, + .jam_size = ARRAY_SIZE(rtl8365mb_init_jam_8365mb_vc), + }, + { + .name = "RTL8367RB-VB", + .chip_id = 0x6367, + .chip_ver = 0x0020, + .extints = { + { 6, 1, PHY_INTF(MII) | PHY_INTF(TMII) | + PHY_INTF(RMII) | PHY_INTF(RGMII) }, + { 7, 2, PHY_INTF(MII) | PHY_INTF(TMII) | + PHY_INTF(RMII) | PHY_INTF(RGMII) }, + }, + .jam_table = rtl8365mb_init_jam_8365mb_vc, + .jam_size = ARRAY_SIZE(rtl8365mb_init_jam_8365mb_vc), + }, +}; + +enum rtl8365mb_stp_state { + RTL8365MB_STP_STATE_DISABLED = 0, + RTL8365MB_STP_STATE_BLOCKING = 1, + RTL8365MB_STP_STATE_LEARNING = 2, + RTL8365MB_STP_STATE_FORWARDING = 3, +}; + +enum rtl8365mb_cpu_insert { + RTL8365MB_CPU_INSERT_TO_ALL = 0, + RTL8365MB_CPU_INSERT_TO_TRAPPING = 1, + RTL8365MB_CPU_INSERT_TO_NONE = 2, +}; + +enum rtl8365mb_cpu_position { + RTL8365MB_CPU_POS_AFTER_SA = 0, + RTL8365MB_CPU_POS_BEFORE_CRC = 1, +}; + +enum rtl8365mb_cpu_format { + RTL8365MB_CPU_FORMAT_8BYTES = 0, + RTL8365MB_CPU_FORMAT_4BYTES = 1, +}; + +enum rtl8365mb_cpu_rxlen { + RTL8365MB_CPU_RXLEN_72BYTES = 0, + RTL8365MB_CPU_RXLEN_64BYTES = 1, +}; + +/** + * struct rtl8365mb_cpu - CPU port configuration + * @enable: enable/disable hardware insertion of CPU tag in switch->CPU frames + * @mask: port mask of ports that parse should parse CPU tags + * @trap_port: forward trapped frames to this port + * @insert: CPU tag insertion mode in switch->CPU frames + * @position: position of CPU tag in frame + * @rx_length: minimum CPU RX length + * @format: CPU tag format + * + * Represents the CPU tagging and CPU port configuration of the switch. These + * settings are configurable at runtime. + */ +struct rtl8365mb_cpu { + bool enable; + u32 mask; + u32 trap_port; + enum rtl8365mb_cpu_insert insert; + enum rtl8365mb_cpu_position position; + enum rtl8365mb_cpu_rxlen rx_length; + enum rtl8365mb_cpu_format format; +}; + +/** + * struct rtl8365mb_port - private per-port data + * @priv: pointer to parent realtek_priv data + * @index: DSA port index, same as dsa_port::index + * @stats: link statistics populated by rtl8365mb_stats_poll, ready for atomic + * access via rtl8365mb_get_stats64 + * @stats_lock: protect the stats structure during read/update + * @mib_work: delayed work for polling MIB counters + */ +struct rtl8365mb_port { + struct realtek_priv *priv; + unsigned int index; + struct rtnl_link_stats64 stats; + spinlock_t stats_lock; + struct delayed_work mib_work; +}; + +/** + * struct rtl8365mb - driver private data + * @priv: pointer to parent realtek_priv data + * @irq: registered IRQ or zero + * @chip_info: chip-specific info about the attached switch + * @cpu: CPU tagging and CPU port configuration for this chip + * @mib_lock: prevent concurrent reads of MIB counters + * @ports: per-port data + * + * Private data for this driver. + */ +struct rtl8365mb { + struct realtek_priv *priv; + int irq; + const struct rtl8365mb_chip_info *chip_info; + struct rtl8365mb_cpu cpu; + struct mutex mib_lock; + struct rtl8365mb_port ports[RTL8365MB_MAX_NUM_PORTS]; +}; + +static int rtl8365mb_phy_poll_busy(struct realtek_priv *priv) +{ + u32 val; + + return regmap_read_poll_timeout(priv->map_nolock, + RTL8365MB_INDIRECT_ACCESS_STATUS_REG, + val, !val, 10, 100); +} + +static int rtl8365mb_phy_ocp_prepare(struct realtek_priv *priv, int phy, + u32 ocp_addr) +{ + u32 val; + int ret; + + /* Set OCP prefix */ + val = FIELD_GET(RTL8365MB_PHY_OCP_ADDR_PREFIX_MASK, ocp_addr); + ret = regmap_update_bits( + priv->map_nolock, RTL8365MB_GPHY_OCP_MSB_0_REG, + RTL8365MB_GPHY_OCP_MSB_0_CFG_CPU_OCPADR_MASK, + FIELD_PREP(RTL8365MB_GPHY_OCP_MSB_0_CFG_CPU_OCPADR_MASK, val)); + if (ret) + return ret; + + /* Set PHY register address */ + val = RTL8365MB_PHY_BASE; + val |= FIELD_PREP(RTL8365MB_INDIRECT_ACCESS_ADDRESS_PHYNUM_MASK, phy); + val |= FIELD_PREP(RTL8365MB_INDIRECT_ACCESS_ADDRESS_OCPADR_5_1_MASK, + ocp_addr >> 1); + val |= FIELD_PREP(RTL8365MB_INDIRECT_ACCESS_ADDRESS_OCPADR_9_6_MASK, + ocp_addr >> 6); + ret = regmap_write(priv->map_nolock, + RTL8365MB_INDIRECT_ACCESS_ADDRESS_REG, val); + if (ret) + return ret; + + return 0; +} + +static int rtl8365mb_phy_ocp_read(struct realtek_priv *priv, int phy, + u32 ocp_addr, u16 *data) +{ + u32 val; + int ret; + + mutex_lock(&priv->map_lock); + + ret = rtl8365mb_phy_poll_busy(priv); + if (ret) + goto out; + + ret = rtl8365mb_phy_ocp_prepare(priv, phy, ocp_addr); + if (ret) + goto out; + + /* Execute read operation */ + val = FIELD_PREP(RTL8365MB_INDIRECT_ACCESS_CTRL_CMD_MASK, + RTL8365MB_INDIRECT_ACCESS_CTRL_CMD_VALUE) | + FIELD_PREP(RTL8365MB_INDIRECT_ACCESS_CTRL_RW_MASK, + RTL8365MB_INDIRECT_ACCESS_CTRL_RW_READ); + ret = regmap_write(priv->map_nolock, RTL8365MB_INDIRECT_ACCESS_CTRL_REG, + val); + if (ret) + goto out; + + ret = rtl8365mb_phy_poll_busy(priv); + if (ret) + goto out; + + /* Get PHY register data */ + ret = regmap_read(priv->map_nolock, + RTL8365MB_INDIRECT_ACCESS_READ_DATA_REG, &val); + if (ret) + goto out; + + *data = val & 0xFFFF; + +out: + mutex_unlock(&priv->map_lock); + + return ret; +} + +static int rtl8365mb_phy_ocp_write(struct realtek_priv *priv, int phy, + u32 ocp_addr, u16 data) +{ + u32 val; + int ret; + + mutex_lock(&priv->map_lock); + + ret = rtl8365mb_phy_poll_busy(priv); + if (ret) + goto out; + + ret = rtl8365mb_phy_ocp_prepare(priv, phy, ocp_addr); + if (ret) + goto out; + + /* Set PHY register data */ + ret = regmap_write(priv->map_nolock, + RTL8365MB_INDIRECT_ACCESS_WRITE_DATA_REG, data); + if (ret) + goto out; + + /* Execute write operation */ + val = FIELD_PREP(RTL8365MB_INDIRECT_ACCESS_CTRL_CMD_MASK, + RTL8365MB_INDIRECT_ACCESS_CTRL_CMD_VALUE) | + FIELD_PREP(RTL8365MB_INDIRECT_ACCESS_CTRL_RW_MASK, + RTL8365MB_INDIRECT_ACCESS_CTRL_RW_WRITE); + ret = regmap_write(priv->map_nolock, RTL8365MB_INDIRECT_ACCESS_CTRL_REG, + val); + if (ret) + goto out; + + ret = rtl8365mb_phy_poll_busy(priv); + if (ret) + goto out; + +out: + mutex_unlock(&priv->map_lock); + + return 0; +} + +static int rtl8365mb_phy_read(struct realtek_priv *priv, int phy, int regnum) +{ + u32 ocp_addr; + u16 val; + int ret; + + if (phy > RTL8365MB_PHYADDRMAX) + return -EINVAL; + + if (regnum > RTL8365MB_PHYREGMAX) + return -EINVAL; + + ocp_addr = RTL8365MB_PHY_OCP_ADDR_PHYREG_BASE + regnum * 2; + + ret = rtl8365mb_phy_ocp_read(priv, phy, ocp_addr, &val); + if (ret) { + dev_err(priv->dev, + "failed to read PHY%d reg %02x @ %04x, ret %d\n", phy, + regnum, ocp_addr, ret); + return ret; + } + + dev_dbg(priv->dev, "read PHY%d register 0x%02x @ %04x, val <- %04x\n", + phy, regnum, ocp_addr, val); + + return val; +} + +static int rtl8365mb_phy_write(struct realtek_priv *priv, int phy, int regnum, + u16 val) +{ + u32 ocp_addr; + int ret; + + if (phy > RTL8365MB_PHYADDRMAX) + return -EINVAL; + + if (regnum > RTL8365MB_PHYREGMAX) + return -EINVAL; + + ocp_addr = RTL8365MB_PHY_OCP_ADDR_PHYREG_BASE + regnum * 2; + + ret = rtl8365mb_phy_ocp_write(priv, phy, ocp_addr, val); + if (ret) { + dev_err(priv->dev, + "failed to write PHY%d reg %02x @ %04x, ret %d\n", phy, + regnum, ocp_addr, ret); + return ret; + } + + dev_dbg(priv->dev, "write PHY%d register 0x%02x @ %04x, val -> %04x\n", + phy, regnum, ocp_addr, val); + + return 0; +} + +static int rtl8365mb_dsa_phy_read(struct dsa_switch *ds, int phy, int regnum) +{ + return rtl8365mb_phy_read(ds->priv, phy, regnum); +} + +static int rtl8365mb_dsa_phy_write(struct dsa_switch *ds, int phy, int regnum, + u16 val) +{ + return rtl8365mb_phy_write(ds->priv, phy, regnum, val); +} + +static const struct rtl8365mb_extint * +rtl8365mb_get_port_extint(struct realtek_priv *priv, int port) +{ + struct rtl8365mb *mb = priv->chip_data; + int i; + + for (i = 0; i < RTL8365MB_MAX_NUM_EXTINTS; i++) { + const struct rtl8365mb_extint *extint = + &mb->chip_info->extints[i]; + + if (!extint->supported_interfaces) + continue; + + if (extint->port == port) + return extint; + } + + return NULL; +} + +static enum dsa_tag_protocol +rtl8365mb_get_tag_protocol(struct dsa_switch *ds, int port, + enum dsa_tag_protocol mp) +{ + struct realtek_priv *priv = ds->priv; + struct rtl8365mb_cpu *cpu; + struct rtl8365mb *mb; + + mb = priv->chip_data; + cpu = &mb->cpu; + + if (cpu->position == RTL8365MB_CPU_POS_BEFORE_CRC) + return DSA_TAG_PROTO_RTL8_4T; + + return DSA_TAG_PROTO_RTL8_4; +} + +static int rtl8365mb_ext_config_rgmii(struct realtek_priv *priv, int port, + phy_interface_t interface) +{ + const struct rtl8365mb_extint *extint = + rtl8365mb_get_port_extint(priv, port); + struct device_node *dn; + struct dsa_port *dp; + int tx_delay = 0; + int rx_delay = 0; + u32 val; + int ret; + + if (!extint) + return -ENODEV; + + dp = dsa_to_port(priv->ds, port); + dn = dp->dn; + + /* Set the RGMII TX/RX delay + * + * The Realtek vendor driver indicates the following possible + * configuration settings: + * + * TX delay: + * 0 = no delay, 1 = 2 ns delay + * RX delay: + * 0 = no delay, 7 = maximum delay + * Each step is approximately 0.3 ns, so the maximum delay is about + * 2.1 ns. + * + * The vendor driver also states that this must be configured *before* + * forcing the external interface into a particular mode, which is done + * in the rtl8365mb_phylink_mac_link_{up,down} functions. + * + * Only configure an RGMII TX (resp. RX) delay if the + * tx-internal-delay-ps (resp. rx-internal-delay-ps) OF property is + * specified. We ignore the detail of the RGMII interface mode + * (RGMII_{RXID, TXID, etc.}), as this is considered to be a PHY-only + * property. + */ + if (!of_property_read_u32(dn, "tx-internal-delay-ps", &val)) { + val = val / 1000; /* convert to ns */ + + if (val == 0 || val == 2) + tx_delay = val / 2; + else + dev_warn(priv->dev, + "RGMII TX delay must be 0 or 2 ns\n"); + } + + if (!of_property_read_u32(dn, "rx-internal-delay-ps", &val)) { + val = DIV_ROUND_CLOSEST(val, 300); /* convert to 0.3 ns step */ + + if (val <= 7) + rx_delay = val; + else + dev_warn(priv->dev, + "RGMII RX delay must be 0 to 2.1 ns\n"); + } + + ret = regmap_update_bits( + priv->map, RTL8365MB_EXT_RGMXF_REG(extint->id), + RTL8365MB_EXT_RGMXF_TXDELAY_MASK | + RTL8365MB_EXT_RGMXF_RXDELAY_MASK, + FIELD_PREP(RTL8365MB_EXT_RGMXF_TXDELAY_MASK, tx_delay) | + FIELD_PREP(RTL8365MB_EXT_RGMXF_RXDELAY_MASK, rx_delay)); + if (ret) + return ret; + + ret = regmap_update_bits( + priv->map, RTL8365MB_DIGITAL_INTERFACE_SELECT_REG(extint->id), + RTL8365MB_DIGITAL_INTERFACE_SELECT_MODE_MASK(extint->id), + RTL8365MB_EXT_PORT_MODE_RGMII + << RTL8365MB_DIGITAL_INTERFACE_SELECT_MODE_OFFSET( + extint->id)); + if (ret) + return ret; + + return 0; +} + +static int rtl8365mb_ext_config_forcemode(struct realtek_priv *priv, int port, + bool link, int speed, int duplex, + bool tx_pause, bool rx_pause) +{ + const struct rtl8365mb_extint *extint = + rtl8365mb_get_port_extint(priv, port); + u32 r_tx_pause; + u32 r_rx_pause; + u32 r_duplex; + u32 r_speed; + u32 r_link; + int val; + int ret; + + if (!extint) + return -ENODEV; + + if (link) { + /* Force the link up with the desired configuration */ + r_link = 1; + r_rx_pause = rx_pause ? 1 : 0; + r_tx_pause = tx_pause ? 1 : 0; + + if (speed == SPEED_1000) { + r_speed = RTL8365MB_PORT_SPEED_1000M; + } else if (speed == SPEED_100) { + r_speed = RTL8365MB_PORT_SPEED_100M; + } else if (speed == SPEED_10) { + r_speed = RTL8365MB_PORT_SPEED_10M; + } else { + dev_err(priv->dev, "unsupported port speed %s\n", + phy_speed_to_str(speed)); + return -EINVAL; + } + + if (duplex == DUPLEX_FULL) { + r_duplex = 1; + } else if (duplex == DUPLEX_HALF) { + r_duplex = 0; + } else { + dev_err(priv->dev, "unsupported duplex %s\n", + phy_duplex_to_str(duplex)); + return -EINVAL; + } + } else { + /* Force the link down and reset any programmed configuration */ + r_link = 0; + r_tx_pause = 0; + r_rx_pause = 0; + r_speed = 0; + r_duplex = 0; + } + + val = FIELD_PREP(RTL8365MB_DIGITAL_INTERFACE_FORCE_EN_MASK, 1) | + FIELD_PREP(RTL8365MB_DIGITAL_INTERFACE_FORCE_TXPAUSE_MASK, + r_tx_pause) | + FIELD_PREP(RTL8365MB_DIGITAL_INTERFACE_FORCE_RXPAUSE_MASK, + r_rx_pause) | + FIELD_PREP(RTL8365MB_DIGITAL_INTERFACE_FORCE_LINK_MASK, r_link) | + FIELD_PREP(RTL8365MB_DIGITAL_INTERFACE_FORCE_DUPLEX_MASK, + r_duplex) | + FIELD_PREP(RTL8365MB_DIGITAL_INTERFACE_FORCE_SPEED_MASK, r_speed); + ret = regmap_write(priv->map, + RTL8365MB_DIGITAL_INTERFACE_FORCE_REG(extint->id), + val); + if (ret) + return ret; + + return 0; +} + +static void rtl8365mb_phylink_get_caps(struct dsa_switch *ds, int port, + struct phylink_config *config) +{ + const struct rtl8365mb_extint *extint = + rtl8365mb_get_port_extint(ds->priv, port); + + config->mac_capabilities = MAC_SYM_PAUSE | MAC_ASYM_PAUSE | + MAC_10 | MAC_100 | MAC_1000FD; + + if (!extint) { + __set_bit(PHY_INTERFACE_MODE_INTERNAL, + config->supported_interfaces); + + /* GMII is the default interface mode for phylib, so + * we have to support it for ports with integrated PHY. + */ + __set_bit(PHY_INTERFACE_MODE_GMII, + config->supported_interfaces); + return; + } + + /* Populate according to the modes supported by _this driver_, + * not necessarily the modes supported by the hardware, some of + * which remain unimplemented. + */ + + if (extint->supported_interfaces & RTL8365MB_PHY_INTERFACE_MODE_RGMII) + phy_interface_set_rgmii(config->supported_interfaces); +} + +static void rtl8365mb_phylink_mac_config(struct dsa_switch *ds, int port, + unsigned int mode, + const struct phylink_link_state *state) +{ + struct realtek_priv *priv = ds->priv; + int ret; + + if (mode != MLO_AN_PHY && mode != MLO_AN_FIXED) { + dev_err(priv->dev, + "port %d supports only conventional PHY or fixed-link\n", + port); + return; + } + + if (phy_interface_mode_is_rgmii(state->interface)) { + ret = rtl8365mb_ext_config_rgmii(priv, port, state->interface); + if (ret) + dev_err(priv->dev, + "failed to configure RGMII mode on port %d: %d\n", + port, ret); + return; + } + + /* TODO: Implement MII and RMII modes, which the RTL8365MB-VC also + * supports + */ +} + +static void rtl8365mb_phylink_mac_link_down(struct dsa_switch *ds, int port, + unsigned int mode, + phy_interface_t interface) +{ + struct realtek_priv *priv = ds->priv; + struct rtl8365mb_port *p; + struct rtl8365mb *mb; + int ret; + + mb = priv->chip_data; + p = &mb->ports[port]; + cancel_delayed_work_sync(&p->mib_work); + + if (phy_interface_mode_is_rgmii(interface)) { + ret = rtl8365mb_ext_config_forcemode(priv, port, false, 0, 0, + false, false); + if (ret) + dev_err(priv->dev, + "failed to reset forced mode on port %d: %d\n", + port, ret); + + return; + } +} + +static void rtl8365mb_phylink_mac_link_up(struct dsa_switch *ds, int port, + unsigned int mode, + phy_interface_t interface, + struct phy_device *phydev, int speed, + int duplex, bool tx_pause, + bool rx_pause) +{ + struct realtek_priv *priv = ds->priv; + struct rtl8365mb_port *p; + struct rtl8365mb *mb; + int ret; + + mb = priv->chip_data; + p = &mb->ports[port]; + schedule_delayed_work(&p->mib_work, 0); + + if (phy_interface_mode_is_rgmii(interface)) { + ret = rtl8365mb_ext_config_forcemode(priv, port, true, speed, + duplex, tx_pause, + rx_pause); + if (ret) + dev_err(priv->dev, + "failed to force mode on port %d: %d\n", port, + ret); + + return; + } +} + +static void rtl8365mb_port_stp_state_set(struct dsa_switch *ds, int port, + u8 state) +{ + struct realtek_priv *priv = ds->priv; + enum rtl8365mb_stp_state val; + int msti = 0; + + switch (state) { + case BR_STATE_DISABLED: + val = RTL8365MB_STP_STATE_DISABLED; + break; + case BR_STATE_BLOCKING: + case BR_STATE_LISTENING: + val = RTL8365MB_STP_STATE_BLOCKING; + break; + case BR_STATE_LEARNING: + val = RTL8365MB_STP_STATE_LEARNING; + break; + case BR_STATE_FORWARDING: + val = RTL8365MB_STP_STATE_FORWARDING; + break; + default: + dev_err(priv->dev, "invalid STP state: %u\n", state); + return; + } + + regmap_update_bits(priv->map, RTL8365MB_MSTI_CTRL_REG(msti, port), + RTL8365MB_MSTI_CTRL_PORT_STATE_MASK(port), + val << RTL8365MB_MSTI_CTRL_PORT_STATE_OFFSET(port)); +} + +static int rtl8365mb_port_set_learning(struct realtek_priv *priv, int port, + bool enable) +{ + /* Enable/disable learning by limiting the number of L2 addresses the + * port can learn. Realtek documentation states that a limit of zero + * disables learning. When enabling learning, set it to the chip's + * maximum. + */ + return regmap_write(priv->map, RTL8365MB_LUT_PORT_LEARN_LIMIT_REG(port), + enable ? RTL8365MB_LEARN_LIMIT_MAX : 0); +} + +static int rtl8365mb_port_set_isolation(struct realtek_priv *priv, int port, + u32 mask) +{ + return regmap_write(priv->map, RTL8365MB_PORT_ISOLATION_REG(port), mask); +} + +static int rtl8365mb_mib_counter_read(struct realtek_priv *priv, int port, + u32 offset, u32 length, u64 *mibvalue) +{ + u64 tmpvalue = 0; + u32 val; + int ret; + int i; + + /* The MIB address is an SRAM address. We request a particular address + * and then poll the control register before reading the value from some + * counter registers. + */ + ret = regmap_write(priv->map, RTL8365MB_MIB_ADDRESS_REG, + RTL8365MB_MIB_ADDRESS(port, offset)); + if (ret) + return ret; + + /* Poll for completion */ + ret = regmap_read_poll_timeout(priv->map, RTL8365MB_MIB_CTRL0_REG, val, + !(val & RTL8365MB_MIB_CTRL0_BUSY_MASK), + 10, 100); + if (ret) + return ret; + + /* Presumably this indicates a MIB counter read failure */ + if (val & RTL8365MB_MIB_CTRL0_RESET_MASK) + return -EIO; + + /* There are four MIB counter registers each holding a 16 bit word of a + * MIB counter. Depending on the offset, we should read from the upper + * two or lower two registers. In case the MIB counter is 4 words, we + * read from all four registers. + */ + if (length == 4) + offset = 3; + else + offset = (offset + 1) % 4; + + /* Read the MIB counter 16 bits at a time */ + for (i = 0; i < length; i++) { + ret = regmap_read(priv->map, + RTL8365MB_MIB_COUNTER_REG(offset - i), &val); + if (ret) + return ret; + + tmpvalue = ((tmpvalue) << 16) | (val & 0xFFFF); + } + + /* Only commit the result if no error occurred */ + *mibvalue = tmpvalue; + + return 0; +} + +static void rtl8365mb_get_ethtool_stats(struct dsa_switch *ds, int port, u64 *data) +{ + struct realtek_priv *priv = ds->priv; + struct rtl8365mb *mb; + int ret; + int i; + + mb = priv->chip_data; + + mutex_lock(&mb->mib_lock); + for (i = 0; i < RTL8365MB_MIB_END; i++) { + struct rtl8365mb_mib_counter *mib = &rtl8365mb_mib_counters[i]; + + ret = rtl8365mb_mib_counter_read(priv, port, mib->offset, + mib->length, &data[i]); + if (ret) { + dev_err(priv->dev, + "failed to read port %d counters: %d\n", port, + ret); + break; + } + } + mutex_unlock(&mb->mib_lock); +} + +static void rtl8365mb_get_strings(struct dsa_switch *ds, int port, u32 stringset, u8 *data) +{ + int i; + + if (stringset != ETH_SS_STATS) + return; + + for (i = 0; i < RTL8365MB_MIB_END; i++) { + struct rtl8365mb_mib_counter *mib = &rtl8365mb_mib_counters[i]; + + strncpy(data + i * ETH_GSTRING_LEN, mib->name, ETH_GSTRING_LEN); + } +} + +static int rtl8365mb_get_sset_count(struct dsa_switch *ds, int port, int sset) +{ + if (sset != ETH_SS_STATS) + return -EOPNOTSUPP; + + return RTL8365MB_MIB_END; +} + +static void rtl8365mb_get_phy_stats(struct dsa_switch *ds, int port, + struct ethtool_eth_phy_stats *phy_stats) +{ + struct realtek_priv *priv = ds->priv; + struct rtl8365mb_mib_counter *mib; + struct rtl8365mb *mb; + + mb = priv->chip_data; + mib = &rtl8365mb_mib_counters[RTL8365MB_MIB_dot3StatsSymbolErrors]; + + mutex_lock(&mb->mib_lock); + rtl8365mb_mib_counter_read(priv, port, mib->offset, mib->length, + &phy_stats->SymbolErrorDuringCarrier); + mutex_unlock(&mb->mib_lock); +} + +static void rtl8365mb_get_mac_stats(struct dsa_switch *ds, int port, + struct ethtool_eth_mac_stats *mac_stats) +{ + u64 cnt[RTL8365MB_MIB_END] = { + [RTL8365MB_MIB_ifOutOctets] = 1, + [RTL8365MB_MIB_ifOutUcastPkts] = 1, + [RTL8365MB_MIB_ifOutMulticastPkts] = 1, + [RTL8365MB_MIB_ifOutBroadcastPkts] = 1, + [RTL8365MB_MIB_dot3OutPauseFrames] = 1, + [RTL8365MB_MIB_ifOutDiscards] = 1, + [RTL8365MB_MIB_ifInOctets] = 1, + [RTL8365MB_MIB_ifInUcastPkts] = 1, + [RTL8365MB_MIB_ifInMulticastPkts] = 1, + [RTL8365MB_MIB_ifInBroadcastPkts] = 1, + [RTL8365MB_MIB_dot3InPauseFrames] = 1, + [RTL8365MB_MIB_dot3StatsSingleCollisionFrames] = 1, + [RTL8365MB_MIB_dot3StatsMultipleCollisionFrames] = 1, + [RTL8365MB_MIB_dot3StatsFCSErrors] = 1, + [RTL8365MB_MIB_dot3StatsDeferredTransmissions] = 1, + [RTL8365MB_MIB_dot3StatsLateCollisions] = 1, + [RTL8365MB_MIB_dot3StatsExcessiveCollisions] = 1, + + }; + struct realtek_priv *priv = ds->priv; + struct rtl8365mb *mb; + int ret; + int i; + + mb = priv->chip_data; + + mutex_lock(&mb->mib_lock); + for (i = 0; i < RTL8365MB_MIB_END; i++) { + struct rtl8365mb_mib_counter *mib = &rtl8365mb_mib_counters[i]; + + /* Only fetch required MIB counters (marked = 1 above) */ + if (!cnt[i]) + continue; + + ret = rtl8365mb_mib_counter_read(priv, port, mib->offset, + mib->length, &cnt[i]); + if (ret) + break; + } + mutex_unlock(&mb->mib_lock); + + /* The RTL8365MB-VC exposes MIB objects, which we have to translate into + * IEEE 802.3 Managed Objects. This is not always completely faithful, + * but we try out best. See RFC 3635 for a detailed treatment of the + * subject. + */ + + mac_stats->FramesTransmittedOK = cnt[RTL8365MB_MIB_ifOutUcastPkts] + + cnt[RTL8365MB_MIB_ifOutMulticastPkts] + + cnt[RTL8365MB_MIB_ifOutBroadcastPkts] + + cnt[RTL8365MB_MIB_dot3OutPauseFrames] - + cnt[RTL8365MB_MIB_ifOutDiscards]; + mac_stats->SingleCollisionFrames = + cnt[RTL8365MB_MIB_dot3StatsSingleCollisionFrames]; + mac_stats->MultipleCollisionFrames = + cnt[RTL8365MB_MIB_dot3StatsMultipleCollisionFrames]; + mac_stats->FramesReceivedOK = cnt[RTL8365MB_MIB_ifInUcastPkts] + + cnt[RTL8365MB_MIB_ifInMulticastPkts] + + cnt[RTL8365MB_MIB_ifInBroadcastPkts] + + cnt[RTL8365MB_MIB_dot3InPauseFrames]; + mac_stats->FrameCheckSequenceErrors = + cnt[RTL8365MB_MIB_dot3StatsFCSErrors]; + mac_stats->OctetsTransmittedOK = cnt[RTL8365MB_MIB_ifOutOctets] - + 18 * mac_stats->FramesTransmittedOK; + mac_stats->FramesWithDeferredXmissions = + cnt[RTL8365MB_MIB_dot3StatsDeferredTransmissions]; + mac_stats->LateCollisions = cnt[RTL8365MB_MIB_dot3StatsLateCollisions]; + mac_stats->FramesAbortedDueToXSColls = + cnt[RTL8365MB_MIB_dot3StatsExcessiveCollisions]; + mac_stats->OctetsReceivedOK = cnt[RTL8365MB_MIB_ifInOctets] - + 18 * mac_stats->FramesReceivedOK; + mac_stats->MulticastFramesXmittedOK = + cnt[RTL8365MB_MIB_ifOutMulticastPkts]; + mac_stats->BroadcastFramesXmittedOK = + cnt[RTL8365MB_MIB_ifOutBroadcastPkts]; + mac_stats->MulticastFramesReceivedOK = + cnt[RTL8365MB_MIB_ifInMulticastPkts]; + mac_stats->BroadcastFramesReceivedOK = + cnt[RTL8365MB_MIB_ifInBroadcastPkts]; +} + +static void rtl8365mb_get_ctrl_stats(struct dsa_switch *ds, int port, + struct ethtool_eth_ctrl_stats *ctrl_stats) +{ + struct realtek_priv *priv = ds->priv; + struct rtl8365mb_mib_counter *mib; + struct rtl8365mb *mb; + + mb = priv->chip_data; + mib = &rtl8365mb_mib_counters[RTL8365MB_MIB_dot3ControlInUnknownOpcodes]; + + mutex_lock(&mb->mib_lock); + rtl8365mb_mib_counter_read(priv, port, mib->offset, mib->length, + &ctrl_stats->UnsupportedOpcodesReceived); + mutex_unlock(&mb->mib_lock); +} + +static void rtl8365mb_stats_update(struct realtek_priv *priv, int port) +{ + u64 cnt[RTL8365MB_MIB_END] = { + [RTL8365MB_MIB_ifOutOctets] = 1, + [RTL8365MB_MIB_ifOutUcastPkts] = 1, + [RTL8365MB_MIB_ifOutMulticastPkts] = 1, + [RTL8365MB_MIB_ifOutBroadcastPkts] = 1, + [RTL8365MB_MIB_ifOutDiscards] = 1, + [RTL8365MB_MIB_ifInOctets] = 1, + [RTL8365MB_MIB_ifInUcastPkts] = 1, + [RTL8365MB_MIB_ifInMulticastPkts] = 1, + [RTL8365MB_MIB_ifInBroadcastPkts] = 1, + [RTL8365MB_MIB_etherStatsDropEvents] = 1, + [RTL8365MB_MIB_etherStatsCollisions] = 1, + [RTL8365MB_MIB_etherStatsFragments] = 1, + [RTL8365MB_MIB_etherStatsJabbers] = 1, + [RTL8365MB_MIB_dot3StatsFCSErrors] = 1, + [RTL8365MB_MIB_dot3StatsLateCollisions] = 1, + }; + struct rtl8365mb *mb = priv->chip_data; + struct rtnl_link_stats64 *stats; + int ret; + int i; + + stats = &mb->ports[port].stats; + + mutex_lock(&mb->mib_lock); + for (i = 0; i < RTL8365MB_MIB_END; i++) { + struct rtl8365mb_mib_counter *c = &rtl8365mb_mib_counters[i]; + + /* Only fetch required MIB counters (marked = 1 above) */ + if (!cnt[i]) + continue; + + ret = rtl8365mb_mib_counter_read(priv, port, c->offset, + c->length, &cnt[i]); + if (ret) + break; + } + mutex_unlock(&mb->mib_lock); + + /* Don't update statistics if there was an error reading the counters */ + if (ret) + return; + + spin_lock(&mb->ports[port].stats_lock); + + stats->rx_packets = cnt[RTL8365MB_MIB_ifInUcastPkts] + + cnt[RTL8365MB_MIB_ifInMulticastPkts] + + cnt[RTL8365MB_MIB_ifInBroadcastPkts] - + cnt[RTL8365MB_MIB_ifOutDiscards]; + + stats->tx_packets = cnt[RTL8365MB_MIB_ifOutUcastPkts] + + cnt[RTL8365MB_MIB_ifOutMulticastPkts] + + cnt[RTL8365MB_MIB_ifOutBroadcastPkts]; + + /* if{In,Out}Octets includes FCS - remove it */ + stats->rx_bytes = cnt[RTL8365MB_MIB_ifInOctets] - 4 * stats->rx_packets; + stats->tx_bytes = + cnt[RTL8365MB_MIB_ifOutOctets] - 4 * stats->tx_packets; + + stats->rx_dropped = cnt[RTL8365MB_MIB_etherStatsDropEvents]; + stats->tx_dropped = cnt[RTL8365MB_MIB_ifOutDiscards]; + + stats->multicast = cnt[RTL8365MB_MIB_ifInMulticastPkts]; + stats->collisions = cnt[RTL8365MB_MIB_etherStatsCollisions]; + + stats->rx_length_errors = cnt[RTL8365MB_MIB_etherStatsFragments] + + cnt[RTL8365MB_MIB_etherStatsJabbers]; + stats->rx_crc_errors = cnt[RTL8365MB_MIB_dot3StatsFCSErrors]; + stats->rx_errors = stats->rx_length_errors + stats->rx_crc_errors; + + stats->tx_aborted_errors = cnt[RTL8365MB_MIB_ifOutDiscards]; + stats->tx_window_errors = cnt[RTL8365MB_MIB_dot3StatsLateCollisions]; + stats->tx_errors = stats->tx_aborted_errors + stats->tx_window_errors; + + spin_unlock(&mb->ports[port].stats_lock); +} + +static void rtl8365mb_stats_poll(struct work_struct *work) +{ + struct rtl8365mb_port *p = container_of(to_delayed_work(work), + struct rtl8365mb_port, + mib_work); + struct realtek_priv *priv = p->priv; + + rtl8365mb_stats_update(priv, p->index); + + schedule_delayed_work(&p->mib_work, RTL8365MB_STATS_INTERVAL_JIFFIES); +} + +static void rtl8365mb_get_stats64(struct dsa_switch *ds, int port, + struct rtnl_link_stats64 *s) +{ + struct realtek_priv *priv = ds->priv; + struct rtl8365mb_port *p; + struct rtl8365mb *mb; + + mb = priv->chip_data; + p = &mb->ports[port]; + + spin_lock(&p->stats_lock); + memcpy(s, &p->stats, sizeof(*s)); + spin_unlock(&p->stats_lock); +} + +static void rtl8365mb_stats_setup(struct realtek_priv *priv) +{ + struct rtl8365mb *mb = priv->chip_data; + int i; + + /* Per-chip global mutex to protect MIB counter access, since doing + * so requires accessing a series of registers in a particular order. + */ + mutex_init(&mb->mib_lock); + + for (i = 0; i < priv->num_ports; i++) { + struct rtl8365mb_port *p = &mb->ports[i]; + + if (dsa_is_unused_port(priv->ds, i)) + continue; + + /* Per-port spinlock to protect the stats64 data */ + spin_lock_init(&p->stats_lock); + + /* This work polls the MIB counters and keeps the stats64 data + * up-to-date. + */ + INIT_DELAYED_WORK(&p->mib_work, rtl8365mb_stats_poll); + } +} + +static void rtl8365mb_stats_teardown(struct realtek_priv *priv) +{ + struct rtl8365mb *mb = priv->chip_data; + int i; + + for (i = 0; i < priv->num_ports; i++) { + struct rtl8365mb_port *p = &mb->ports[i]; + + if (dsa_is_unused_port(priv->ds, i)) + continue; + + cancel_delayed_work_sync(&p->mib_work); + } +} + +static int rtl8365mb_get_and_clear_status_reg(struct realtek_priv *priv, u32 reg, + u32 *val) +{ + int ret; + + ret = regmap_read(priv->map, reg, val); + if (ret) + return ret; + + return regmap_write(priv->map, reg, *val); +} + +static irqreturn_t rtl8365mb_irq(int irq, void *data) +{ + struct realtek_priv *priv = data; + unsigned long line_changes = 0; + u32 stat; + int line; + int ret; + + ret = rtl8365mb_get_and_clear_status_reg(priv, RTL8365MB_INTR_STATUS_REG, + &stat); + if (ret) + goto out_error; + + if (stat & RTL8365MB_INTR_LINK_CHANGE_MASK) { + u32 linkdown_ind; + u32 linkup_ind; + u32 val; + + ret = rtl8365mb_get_and_clear_status_reg( + priv, RTL8365MB_PORT_LINKUP_IND_REG, &val); + if (ret) + goto out_error; + + linkup_ind = FIELD_GET(RTL8365MB_PORT_LINKUP_IND_MASK, val); + + ret = rtl8365mb_get_and_clear_status_reg( + priv, RTL8365MB_PORT_LINKDOWN_IND_REG, &val); + if (ret) + goto out_error; + + linkdown_ind = FIELD_GET(RTL8365MB_PORT_LINKDOWN_IND_MASK, val); + + line_changes = linkup_ind | linkdown_ind; + } + + if (!line_changes) + goto out_none; + + for_each_set_bit(line, &line_changes, priv->num_ports) { + int child_irq = irq_find_mapping(priv->irqdomain, line); + + handle_nested_irq(child_irq); + } + + return IRQ_HANDLED; + +out_error: + dev_err(priv->dev, "failed to read interrupt status: %d\n", ret); + +out_none: + return IRQ_NONE; +} + +static struct irq_chip rtl8365mb_irq_chip = { + .name = "rtl8365mb", + /* The hardware doesn't support masking IRQs on a per-port basis */ +}; + +static int rtl8365mb_irq_map(struct irq_domain *domain, unsigned int irq, + irq_hw_number_t hwirq) +{ + irq_set_chip_data(irq, domain->host_data); + irq_set_chip_and_handler(irq, &rtl8365mb_irq_chip, handle_simple_irq); + irq_set_nested_thread(irq, 1); + irq_set_noprobe(irq); + + return 0; +} + +static void rtl8365mb_irq_unmap(struct irq_domain *d, unsigned int irq) +{ + irq_set_nested_thread(irq, 0); + irq_set_chip_and_handler(irq, NULL, NULL); + irq_set_chip_data(irq, NULL); +} + +static const struct irq_domain_ops rtl8365mb_irqdomain_ops = { + .map = rtl8365mb_irq_map, + .unmap = rtl8365mb_irq_unmap, + .xlate = irq_domain_xlate_onecell, +}; + +static int rtl8365mb_set_irq_enable(struct realtek_priv *priv, bool enable) +{ + return regmap_update_bits(priv->map, RTL8365MB_INTR_CTRL_REG, + RTL8365MB_INTR_LINK_CHANGE_MASK, + FIELD_PREP(RTL8365MB_INTR_LINK_CHANGE_MASK, + enable ? 1 : 0)); +} + +static int rtl8365mb_irq_enable(struct realtek_priv *priv) +{ + return rtl8365mb_set_irq_enable(priv, true); +} + +static int rtl8365mb_irq_disable(struct realtek_priv *priv) +{ + return rtl8365mb_set_irq_enable(priv, false); +} + +static int rtl8365mb_irq_setup(struct realtek_priv *priv) +{ + struct rtl8365mb *mb = priv->chip_data; + struct device_node *intc; + u32 irq_trig; + int virq; + int irq; + u32 val; + int ret; + int i; + + intc = of_get_child_by_name(priv->dev->of_node, "interrupt-controller"); + if (!intc) { + dev_err(priv->dev, "missing child interrupt-controller node\n"); + return -EINVAL; + } + + /* rtl8365mb IRQs cascade off this one */ + irq = of_irq_get(intc, 0); + if (irq <= 0) { + if (irq != -EPROBE_DEFER) + dev_err(priv->dev, "failed to get parent irq: %d\n", + irq); + ret = irq ? irq : -EINVAL; + goto out_put_node; + } + + priv->irqdomain = irq_domain_add_linear(intc, priv->num_ports, + &rtl8365mb_irqdomain_ops, priv); + if (!priv->irqdomain) { + dev_err(priv->dev, "failed to add irq domain\n"); + ret = -ENOMEM; + goto out_put_node; + } + + for (i = 0; i < priv->num_ports; i++) { + virq = irq_create_mapping(priv->irqdomain, i); + if (!virq) { + dev_err(priv->dev, + "failed to create irq domain mapping\n"); + ret = -EINVAL; + goto out_remove_irqdomain; + } + + irq_set_parent(virq, irq); + } + + /* Configure chip interrupt signal polarity */ + irq_trig = irqd_get_trigger_type(irq_get_irq_data(irq)); + switch (irq_trig) { + case IRQF_TRIGGER_RISING: + case IRQF_TRIGGER_HIGH: + val = RTL8365MB_INTR_POLARITY_HIGH; + break; + case IRQF_TRIGGER_FALLING: + case IRQF_TRIGGER_LOW: + val = RTL8365MB_INTR_POLARITY_LOW; + break; + default: + dev_err(priv->dev, "unsupported irq trigger type %u\n", + irq_trig); + ret = -EINVAL; + goto out_remove_irqdomain; + } + + ret = regmap_update_bits(priv->map, RTL8365MB_INTR_POLARITY_REG, + RTL8365MB_INTR_POLARITY_MASK, + FIELD_PREP(RTL8365MB_INTR_POLARITY_MASK, val)); + if (ret) + goto out_remove_irqdomain; + + /* Disable the interrupt in case the chip has it enabled on reset */ + ret = rtl8365mb_irq_disable(priv); + if (ret) + goto out_remove_irqdomain; + + /* Clear the interrupt status register */ + ret = regmap_write(priv->map, RTL8365MB_INTR_STATUS_REG, + RTL8365MB_INTR_ALL_MASK); + if (ret) + goto out_remove_irqdomain; + + ret = request_threaded_irq(irq, NULL, rtl8365mb_irq, IRQF_ONESHOT, + "rtl8365mb", priv); + if (ret) { + dev_err(priv->dev, "failed to request irq: %d\n", ret); + goto out_remove_irqdomain; + } + + /* Store the irq so that we know to free it during teardown */ + mb->irq = irq; + + ret = rtl8365mb_irq_enable(priv); + if (ret) + goto out_free_irq; + + of_node_put(intc); + + return 0; + +out_free_irq: + free_irq(mb->irq, priv); + mb->irq = 0; + +out_remove_irqdomain: + for (i = 0; i < priv->num_ports; i++) { + virq = irq_find_mapping(priv->irqdomain, i); + irq_dispose_mapping(virq); + } + + irq_domain_remove(priv->irqdomain); + priv->irqdomain = NULL; + +out_put_node: + of_node_put(intc); + + return ret; +} + +static void rtl8365mb_irq_teardown(struct realtek_priv *priv) +{ + struct rtl8365mb *mb = priv->chip_data; + int virq; + int i; + + if (mb->irq) { + free_irq(mb->irq, priv); + mb->irq = 0; + } + + if (priv->irqdomain) { + for (i = 0; i < priv->num_ports; i++) { + virq = irq_find_mapping(priv->irqdomain, i); + irq_dispose_mapping(virq); + } + + irq_domain_remove(priv->irqdomain); + priv->irqdomain = NULL; + } +} + +static int rtl8365mb_cpu_config(struct realtek_priv *priv) +{ + struct rtl8365mb *mb = priv->chip_data; + struct rtl8365mb_cpu *cpu = &mb->cpu; + u32 val; + int ret; + + ret = regmap_update_bits(priv->map, RTL8365MB_CPU_PORT_MASK_REG, + RTL8365MB_CPU_PORT_MASK_MASK, + FIELD_PREP(RTL8365MB_CPU_PORT_MASK_MASK, + cpu->mask)); + if (ret) + return ret; + + val = FIELD_PREP(RTL8365MB_CPU_CTRL_EN_MASK, cpu->enable ? 1 : 0) | + FIELD_PREP(RTL8365MB_CPU_CTRL_INSERTMODE_MASK, cpu->insert) | + FIELD_PREP(RTL8365MB_CPU_CTRL_TAG_POSITION_MASK, cpu->position) | + FIELD_PREP(RTL8365MB_CPU_CTRL_RXBYTECOUNT_MASK, cpu->rx_length) | + FIELD_PREP(RTL8365MB_CPU_CTRL_TAG_FORMAT_MASK, cpu->format) | + FIELD_PREP(RTL8365MB_CPU_CTRL_TRAP_PORT_MASK, cpu->trap_port & 0x7) | + FIELD_PREP(RTL8365MB_CPU_CTRL_TRAP_PORT_EXT_MASK, + cpu->trap_port >> 3 & 0x1); + ret = regmap_write(priv->map, RTL8365MB_CPU_CTRL_REG, val); + if (ret) + return ret; + + return 0; +} + +static int rtl8365mb_change_tag_protocol(struct dsa_switch *ds, + enum dsa_tag_protocol proto) +{ + struct realtek_priv *priv = ds->priv; + struct rtl8365mb_cpu *cpu; + struct rtl8365mb *mb; + + mb = priv->chip_data; + cpu = &mb->cpu; + + switch (proto) { + case DSA_TAG_PROTO_RTL8_4: + cpu->format = RTL8365MB_CPU_FORMAT_8BYTES; + cpu->position = RTL8365MB_CPU_POS_AFTER_SA; + break; + case DSA_TAG_PROTO_RTL8_4T: + cpu->format = RTL8365MB_CPU_FORMAT_8BYTES; + cpu->position = RTL8365MB_CPU_POS_BEFORE_CRC; + break; + /* The switch also supports a 4-byte format, similar to rtl4a but with + * the same 0x04 8-bit version and probably 8-bit port source/dest. + * There is no public doc about it. Not supported yet and it will probably + * never be. + */ + default: + return -EPROTONOSUPPORT; + } + + return rtl8365mb_cpu_config(priv); +} + +static int rtl8365mb_switch_init(struct realtek_priv *priv) +{ + struct rtl8365mb *mb = priv->chip_data; + const struct rtl8365mb_chip_info *ci; + int ret; + int i; + + ci = mb->chip_info; + + /* Do any chip-specific init jam before getting to the common stuff */ + if (ci->jam_table) { + for (i = 0; i < ci->jam_size; i++) { + ret = regmap_write(priv->map, ci->jam_table[i].reg, + ci->jam_table[i].val); + if (ret) + return ret; + } + } + + /* Common init jam */ + for (i = 0; i < ARRAY_SIZE(rtl8365mb_init_jam_common); i++) { + ret = regmap_write(priv->map, rtl8365mb_init_jam_common[i].reg, + rtl8365mb_init_jam_common[i].val); + if (ret) + return ret; + } + + return 0; +} + +static int rtl8365mb_reset_chip(struct realtek_priv *priv) +{ + u32 val; + + priv->write_reg_noack(priv, RTL8365MB_CHIP_RESET_REG, + FIELD_PREP(RTL8365MB_CHIP_RESET_HW_MASK, 1)); + + /* Realtek documentation says the chip needs 1 second to reset. Sleep + * for 100 ms before accessing any registers to prevent ACK timeouts. + */ + msleep(100); + return regmap_read_poll_timeout(priv->map, RTL8365MB_CHIP_RESET_REG, val, + !(val & RTL8365MB_CHIP_RESET_HW_MASK), + 20000, 1e6); +} + +static int rtl8365mb_setup(struct dsa_switch *ds) +{ + struct realtek_priv *priv = ds->priv; + struct rtl8365mb_cpu *cpu; + struct dsa_port *cpu_dp; + struct rtl8365mb *mb; + int ret; + int i; + + mb = priv->chip_data; + cpu = &mb->cpu; + + ret = rtl8365mb_reset_chip(priv); + if (ret) { + dev_err(priv->dev, "failed to reset chip: %d\n", ret); + goto out_error; + } + + /* Configure switch to vendor-defined initial state */ + ret = rtl8365mb_switch_init(priv); + if (ret) { + dev_err(priv->dev, "failed to initialize switch: %d\n", ret); + goto out_error; + } + + /* Set up cascading IRQs */ + ret = rtl8365mb_irq_setup(priv); + if (ret == -EPROBE_DEFER) + return ret; + else if (ret) + dev_info(priv->dev, "no interrupt support\n"); + + /* Configure CPU tagging */ + dsa_switch_for_each_cpu_port(cpu_dp, priv->ds) { + cpu->mask |= BIT(cpu_dp->index); + + if (cpu->trap_port == RTL8365MB_MAX_NUM_PORTS) + cpu->trap_port = cpu_dp->index; + } + cpu->enable = cpu->mask > 0; + ret = rtl8365mb_cpu_config(priv); + if (ret) + goto out_teardown_irq; + + /* Configure ports */ + for (i = 0; i < priv->num_ports; i++) { + struct rtl8365mb_port *p = &mb->ports[i]; + + if (dsa_is_unused_port(priv->ds, i)) + continue; + + /* Forward only to the CPU */ + ret = rtl8365mb_port_set_isolation(priv, i, cpu->mask); + if (ret) + goto out_teardown_irq; + + /* Disable learning */ + ret = rtl8365mb_port_set_learning(priv, i, false); + if (ret) + goto out_teardown_irq; + + /* Set the initial STP state of all ports to DISABLED, otherwise + * ports will still forward frames to the CPU despite being + * administratively down by default. + */ + rtl8365mb_port_stp_state_set(priv->ds, i, BR_STATE_DISABLED); + + /* Set up per-port private data */ + p->priv = priv; + p->index = i; + } + + /* Set maximum packet length to 1536 bytes */ + ret = regmap_update_bits(priv->map, RTL8365MB_CFG0_MAX_LEN_REG, + RTL8365MB_CFG0_MAX_LEN_MASK, + FIELD_PREP(RTL8365MB_CFG0_MAX_LEN_MASK, 1536)); + if (ret) + goto out_teardown_irq; + + if (priv->setup_interface) { + ret = priv->setup_interface(ds); + if (ret) { + dev_err(priv->dev, "could not set up MDIO bus\n"); + goto out_teardown_irq; + } + } + + /* Start statistics counter polling */ + rtl8365mb_stats_setup(priv); + + return 0; + +out_teardown_irq: + rtl8365mb_irq_teardown(priv); + +out_error: + return ret; +} + +static void rtl8365mb_teardown(struct dsa_switch *ds) +{ + struct realtek_priv *priv = ds->priv; + + rtl8365mb_stats_teardown(priv); + rtl8365mb_irq_teardown(priv); +} + +static int rtl8365mb_get_chip_id_and_ver(struct regmap *map, u32 *id, u32 *ver) +{ + int ret; + + /* For some reason we have to write a magic value to an arbitrary + * register whenever accessing the chip ID/version registers. + */ + ret = regmap_write(map, RTL8365MB_MAGIC_REG, RTL8365MB_MAGIC_VALUE); + if (ret) + return ret; + + ret = regmap_read(map, RTL8365MB_CHIP_ID_REG, id); + if (ret) + return ret; + + ret = regmap_read(map, RTL8365MB_CHIP_VER_REG, ver); + if (ret) + return ret; + + /* Reset magic register */ + ret = regmap_write(map, RTL8365MB_MAGIC_REG, 0); + if (ret) + return ret; + + return 0; +} + +static int rtl8365mb_detect(struct realtek_priv *priv) +{ + struct rtl8365mb *mb = priv->chip_data; + u32 chip_id; + u32 chip_ver; + int ret; + int i; + + ret = rtl8365mb_get_chip_id_and_ver(priv->map, &chip_id, &chip_ver); + if (ret) { + dev_err(priv->dev, "failed to read chip id and version: %d\n", + ret); + return ret; + } + + for (i = 0; i < ARRAY_SIZE(rtl8365mb_chip_infos); i++) { + const struct rtl8365mb_chip_info *ci = &rtl8365mb_chip_infos[i]; + + if (ci->chip_id == chip_id && ci->chip_ver == chip_ver) { + mb->chip_info = ci; + break; + } + } + + if (!mb->chip_info) { + dev_err(priv->dev, + "unrecognized switch (id=0x%04x, ver=0x%04x)", chip_id, + chip_ver); + return -ENODEV; + } + + dev_info(priv->dev, "found an %s switch\n", mb->chip_info->name); + + priv->num_ports = RTL8365MB_MAX_NUM_PORTS; + mb->priv = priv; + mb->cpu.trap_port = RTL8365MB_MAX_NUM_PORTS; + mb->cpu.insert = RTL8365MB_CPU_INSERT_TO_ALL; + mb->cpu.position = RTL8365MB_CPU_POS_AFTER_SA; + mb->cpu.rx_length = RTL8365MB_CPU_RXLEN_64BYTES; + mb->cpu.format = RTL8365MB_CPU_FORMAT_8BYTES; + + return 0; +} + +static const struct dsa_switch_ops rtl8365mb_switch_ops_smi = { + .get_tag_protocol = rtl8365mb_get_tag_protocol, + .change_tag_protocol = rtl8365mb_change_tag_protocol, + .setup = rtl8365mb_setup, + .teardown = rtl8365mb_teardown, + .phylink_get_caps = rtl8365mb_phylink_get_caps, + .phylink_mac_config = rtl8365mb_phylink_mac_config, + .phylink_mac_link_down = rtl8365mb_phylink_mac_link_down, + .phylink_mac_link_up = rtl8365mb_phylink_mac_link_up, + .port_stp_state_set = rtl8365mb_port_stp_state_set, + .get_strings = rtl8365mb_get_strings, + .get_ethtool_stats = rtl8365mb_get_ethtool_stats, + .get_sset_count = rtl8365mb_get_sset_count, + .get_eth_phy_stats = rtl8365mb_get_phy_stats, + .get_eth_mac_stats = rtl8365mb_get_mac_stats, + .get_eth_ctrl_stats = rtl8365mb_get_ctrl_stats, + .get_stats64 = rtl8365mb_get_stats64, +}; + +static const struct dsa_switch_ops rtl8365mb_switch_ops_mdio = { + .get_tag_protocol = rtl8365mb_get_tag_protocol, + .change_tag_protocol = rtl8365mb_change_tag_protocol, + .setup = rtl8365mb_setup, + .teardown = rtl8365mb_teardown, + .phylink_get_caps = rtl8365mb_phylink_get_caps, + .phylink_mac_config = rtl8365mb_phylink_mac_config, + .phylink_mac_link_down = rtl8365mb_phylink_mac_link_down, + .phylink_mac_link_up = rtl8365mb_phylink_mac_link_up, + .phy_read = rtl8365mb_dsa_phy_read, + .phy_write = rtl8365mb_dsa_phy_write, + .port_stp_state_set = rtl8365mb_port_stp_state_set, + .get_strings = rtl8365mb_get_strings, + .get_ethtool_stats = rtl8365mb_get_ethtool_stats, + .get_sset_count = rtl8365mb_get_sset_count, + .get_eth_phy_stats = rtl8365mb_get_phy_stats, + .get_eth_mac_stats = rtl8365mb_get_mac_stats, + .get_eth_ctrl_stats = rtl8365mb_get_ctrl_stats, + .get_stats64 = rtl8365mb_get_stats64, +}; + +static const struct realtek_ops rtl8365mb_ops = { + .detect = rtl8365mb_detect, + .phy_read = rtl8365mb_phy_read, + .phy_write = rtl8365mb_phy_write, +}; + +const struct realtek_variant rtl8365mb_variant = { + .ds_ops_smi = &rtl8365mb_switch_ops_smi, + .ds_ops_mdio = &rtl8365mb_switch_ops_mdio, + .ops = &rtl8365mb_ops, + .clk_delay = 10, + .cmd_read = 0xb9, + .cmd_write = 0xb8, + .chip_data_sz = sizeof(struct rtl8365mb), +}; +EXPORT_SYMBOL_GPL(rtl8365mb_variant); + +MODULE_AUTHOR("Alvin Šipraga <alsi@bang-olufsen.dk>"); +MODULE_DESCRIPTION("Driver for RTL8365MB-VC ethernet switch"); +MODULE_LICENSE("GPL"); diff --git a/drivers/net/dsa/realtek/rtl8366-core.c b/drivers/net/dsa/realtek/rtl8366-core.c new file mode 100644 index 000000000000..dc5f75be3017 --- /dev/null +++ b/drivers/net/dsa/realtek/rtl8366-core.c @@ -0,0 +1,448 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Realtek SMI library helpers for the RTL8366x variants + * RTL8366RB and RTL8366S + * + * Copyright (C) 2017 Linus Walleij <linus.walleij@linaro.org> + * Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org> + * Copyright (C) 2010 Antti Seppälä <a.seppala@gmail.com> + * Copyright (C) 2010 Roman Yeryomin <roman@advem.lv> + * Copyright (C) 2011 Colin Leitner <colin.leitner@googlemail.com> + */ +#include <linux/if_bridge.h> +#include <net/dsa.h> + +#include "realtek.h" + +int rtl8366_mc_is_used(struct realtek_priv *priv, int mc_index, int *used) +{ + int ret; + int i; + + *used = 0; + for (i = 0; i < priv->num_ports; i++) { + int index = 0; + + ret = priv->ops->get_mc_index(priv, i, &index); + if (ret) + return ret; + + if (mc_index == index) { + *used = 1; + break; + } + } + + return 0; +} +EXPORT_SYMBOL_GPL(rtl8366_mc_is_used); + +/** + * rtl8366_obtain_mc() - retrieve or allocate a VLAN member configuration + * @priv: the Realtek SMI device instance + * @vid: the VLAN ID to look up or allocate + * @vlanmc: the pointer will be assigned to a pointer to a valid member config + * if successful + * @return: index of a new member config or negative error number + */ +static int rtl8366_obtain_mc(struct realtek_priv *priv, int vid, + struct rtl8366_vlan_mc *vlanmc) +{ + struct rtl8366_vlan_4k vlan4k; + int ret; + int i; + + /* Try to find an existing member config entry for this VID */ + for (i = 0; i < priv->num_vlan_mc; i++) { + ret = priv->ops->get_vlan_mc(priv, i, vlanmc); + if (ret) { + dev_err(priv->dev, "error searching for VLAN MC %d for VID %d\n", + i, vid); + return ret; + } + + if (vid == vlanmc->vid) + return i; + } + + /* We have no MC entry for this VID, try to find an empty one */ + for (i = 0; i < priv->num_vlan_mc; i++) { + ret = priv->ops->get_vlan_mc(priv, i, vlanmc); + if (ret) { + dev_err(priv->dev, "error searching for VLAN MC %d for VID %d\n", + i, vid); + return ret; + } + + if (vlanmc->vid == 0 && vlanmc->member == 0) { + /* Update the entry from the 4K table */ + ret = priv->ops->get_vlan_4k(priv, vid, &vlan4k); + if (ret) { + dev_err(priv->dev, "error looking for 4K VLAN MC %d for VID %d\n", + i, vid); + return ret; + } + + vlanmc->vid = vid; + vlanmc->member = vlan4k.member; + vlanmc->untag = vlan4k.untag; + vlanmc->fid = vlan4k.fid; + ret = priv->ops->set_vlan_mc(priv, i, vlanmc); + if (ret) { + dev_err(priv->dev, "unable to set/update VLAN MC %d for VID %d\n", + i, vid); + return ret; + } + + dev_dbg(priv->dev, "created new MC at index %d for VID %d\n", + i, vid); + return i; + } + } + + /* MC table is full, try to find an unused entry and replace it */ + for (i = 0; i < priv->num_vlan_mc; i++) { + int used; + + ret = rtl8366_mc_is_used(priv, i, &used); + if (ret) + return ret; + + if (!used) { + /* Update the entry from the 4K table */ + ret = priv->ops->get_vlan_4k(priv, vid, &vlan4k); + if (ret) + return ret; + + vlanmc->vid = vid; + vlanmc->member = vlan4k.member; + vlanmc->untag = vlan4k.untag; + vlanmc->fid = vlan4k.fid; + ret = priv->ops->set_vlan_mc(priv, i, vlanmc); + if (ret) { + dev_err(priv->dev, "unable to set/update VLAN MC %d for VID %d\n", + i, vid); + return ret; + } + dev_dbg(priv->dev, "recycled MC at index %i for VID %d\n", + i, vid); + return i; + } + } + + dev_err(priv->dev, "all VLAN member configurations are in use\n"); + return -ENOSPC; +} + +int rtl8366_set_vlan(struct realtek_priv *priv, int vid, u32 member, + u32 untag, u32 fid) +{ + struct rtl8366_vlan_mc vlanmc; + struct rtl8366_vlan_4k vlan4k; + int mc; + int ret; + + if (!priv->ops->is_vlan_valid(priv, vid)) + return -EINVAL; + + dev_dbg(priv->dev, + "setting VLAN%d 4k members: 0x%02x, untagged: 0x%02x\n", + vid, member, untag); + + /* Update the 4K table */ + ret = priv->ops->get_vlan_4k(priv, vid, &vlan4k); + if (ret) + return ret; + + vlan4k.member |= member; + vlan4k.untag |= untag; + vlan4k.fid = fid; + ret = priv->ops->set_vlan_4k(priv, &vlan4k); + if (ret) + return ret; + + dev_dbg(priv->dev, + "resulting VLAN%d 4k members: 0x%02x, untagged: 0x%02x\n", + vid, vlan4k.member, vlan4k.untag); + + /* Find or allocate a member config for this VID */ + ret = rtl8366_obtain_mc(priv, vid, &vlanmc); + if (ret < 0) + return ret; + mc = ret; + + /* Update the MC entry */ + vlanmc.member |= member; + vlanmc.untag |= untag; + vlanmc.fid = fid; + + /* Commit updates to the MC entry */ + ret = priv->ops->set_vlan_mc(priv, mc, &vlanmc); + if (ret) + dev_err(priv->dev, "failed to commit changes to VLAN MC index %d for VID %d\n", + mc, vid); + else + dev_dbg(priv->dev, + "resulting VLAN%d MC members: 0x%02x, untagged: 0x%02x\n", + vid, vlanmc.member, vlanmc.untag); + + return ret; +} +EXPORT_SYMBOL_GPL(rtl8366_set_vlan); + +int rtl8366_set_pvid(struct realtek_priv *priv, unsigned int port, + unsigned int vid) +{ + struct rtl8366_vlan_mc vlanmc; + int mc; + int ret; + + if (!priv->ops->is_vlan_valid(priv, vid)) + return -EINVAL; + + /* Find or allocate a member config for this VID */ + ret = rtl8366_obtain_mc(priv, vid, &vlanmc); + if (ret < 0) + return ret; + mc = ret; + + ret = priv->ops->set_mc_index(priv, port, mc); + if (ret) { + dev_err(priv->dev, "set PVID: failed to set MC index %d for port %d\n", + mc, port); + return ret; + } + + dev_dbg(priv->dev, "set PVID: the PVID for port %d set to %d using existing MC index %d\n", + port, vid, mc); + + return 0; +} +EXPORT_SYMBOL_GPL(rtl8366_set_pvid); + +int rtl8366_enable_vlan4k(struct realtek_priv *priv, bool enable) +{ + int ret; + + /* To enable 4k VLAN, ordinary VLAN must be enabled first, + * but if we disable 4k VLAN it is fine to leave ordinary + * VLAN enabled. + */ + if (enable) { + /* Make sure VLAN is ON */ + ret = priv->ops->enable_vlan(priv, true); + if (ret) + return ret; + + priv->vlan_enabled = true; + } + + ret = priv->ops->enable_vlan4k(priv, enable); + if (ret) + return ret; + + priv->vlan4k_enabled = enable; + return 0; +} +EXPORT_SYMBOL_GPL(rtl8366_enable_vlan4k); + +int rtl8366_enable_vlan(struct realtek_priv *priv, bool enable) +{ + int ret; + + ret = priv->ops->enable_vlan(priv, enable); + if (ret) + return ret; + + priv->vlan_enabled = enable; + + /* If we turn VLAN off, make sure that we turn off + * 4k VLAN as well, if that happened to be on. + */ + if (!enable) { + priv->vlan4k_enabled = false; + ret = priv->ops->enable_vlan4k(priv, false); + } + + return ret; +} +EXPORT_SYMBOL_GPL(rtl8366_enable_vlan); + +int rtl8366_reset_vlan(struct realtek_priv *priv) +{ + struct rtl8366_vlan_mc vlanmc; + int ret; + int i; + + rtl8366_enable_vlan(priv, false); + rtl8366_enable_vlan4k(priv, false); + + /* Clear the 16 VLAN member configurations */ + vlanmc.vid = 0; + vlanmc.priority = 0; + vlanmc.member = 0; + vlanmc.untag = 0; + vlanmc.fid = 0; + for (i = 0; i < priv->num_vlan_mc; i++) { + ret = priv->ops->set_vlan_mc(priv, i, &vlanmc); + if (ret) + return ret; + } + + return 0; +} +EXPORT_SYMBOL_GPL(rtl8366_reset_vlan); + +int rtl8366_vlan_add(struct dsa_switch *ds, int port, + const struct switchdev_obj_port_vlan *vlan, + struct netlink_ext_ack *extack) +{ + bool untagged = !!(vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED); + bool pvid = !!(vlan->flags & BRIDGE_VLAN_INFO_PVID); + struct realtek_priv *priv = ds->priv; + u32 member = 0; + u32 untag = 0; + int ret; + + if (!priv->ops->is_vlan_valid(priv, vlan->vid)) { + NL_SET_ERR_MSG_MOD(extack, "VLAN ID not valid"); + return -EINVAL; + } + + /* Enable VLAN in the hardware + * FIXME: what's with this 4k business? + * Just rtl8366_enable_vlan() seems inconclusive. + */ + ret = rtl8366_enable_vlan4k(priv, true); + if (ret) { + NL_SET_ERR_MSG_MOD(extack, "Failed to enable VLAN 4K"); + return ret; + } + + dev_dbg(priv->dev, "add VLAN %d on port %d, %s, %s\n", + vlan->vid, port, untagged ? "untagged" : "tagged", + pvid ? "PVID" : "no PVID"); + + member |= BIT(port); + + if (untagged) + untag |= BIT(port); + + ret = rtl8366_set_vlan(priv, vlan->vid, member, untag, 0); + if (ret) { + dev_err(priv->dev, "failed to set up VLAN %04x", vlan->vid); + return ret; + } + + if (!pvid) + return 0; + + ret = rtl8366_set_pvid(priv, port, vlan->vid); + if (ret) { + dev_err(priv->dev, "failed to set PVID on port %d to VLAN %04x", + port, vlan->vid); + return ret; + } + + return 0; +} +EXPORT_SYMBOL_GPL(rtl8366_vlan_add); + +int rtl8366_vlan_del(struct dsa_switch *ds, int port, + const struct switchdev_obj_port_vlan *vlan) +{ + struct realtek_priv *priv = ds->priv; + int ret, i; + + dev_dbg(priv->dev, "del VLAN %d on port %d\n", vlan->vid, port); + + for (i = 0; i < priv->num_vlan_mc; i++) { + struct rtl8366_vlan_mc vlanmc; + + ret = priv->ops->get_vlan_mc(priv, i, &vlanmc); + if (ret) + return ret; + + if (vlan->vid == vlanmc.vid) { + /* Remove this port from the VLAN */ + vlanmc.member &= ~BIT(port); + vlanmc.untag &= ~BIT(port); + /* + * If no ports are members of this VLAN + * anymore then clear the whole member + * config so it can be reused. + */ + if (!vlanmc.member) { + vlanmc.vid = 0; + vlanmc.priority = 0; + vlanmc.fid = 0; + } + ret = priv->ops->set_vlan_mc(priv, i, &vlanmc); + if (ret) { + dev_err(priv->dev, + "failed to remove VLAN %04x\n", + vlan->vid); + return ret; + } + break; + } + } + + return 0; +} +EXPORT_SYMBOL_GPL(rtl8366_vlan_del); + +void rtl8366_get_strings(struct dsa_switch *ds, int port, u32 stringset, + uint8_t *data) +{ + struct realtek_priv *priv = ds->priv; + struct rtl8366_mib_counter *mib; + int i; + + if (port >= priv->num_ports) + return; + + for (i = 0; i < priv->num_mib_counters; i++) { + mib = &priv->mib_counters[i]; + strncpy(data + i * ETH_GSTRING_LEN, + mib->name, ETH_GSTRING_LEN); + } +} +EXPORT_SYMBOL_GPL(rtl8366_get_strings); + +int rtl8366_get_sset_count(struct dsa_switch *ds, int port, int sset) +{ + struct realtek_priv *priv = ds->priv; + + /* We only support SS_STATS */ + if (sset != ETH_SS_STATS) + return 0; + if (port >= priv->num_ports) + return -EINVAL; + + return priv->num_mib_counters; +} +EXPORT_SYMBOL_GPL(rtl8366_get_sset_count); + +void rtl8366_get_ethtool_stats(struct dsa_switch *ds, int port, uint64_t *data) +{ + struct realtek_priv *priv = ds->priv; + int i; + int ret; + + if (port >= priv->num_ports) + return; + + for (i = 0; i < priv->num_mib_counters; i++) { + struct rtl8366_mib_counter *mib; + u64 mibvalue = 0; + + mib = &priv->mib_counters[i]; + ret = priv->ops->get_mib_counter(priv, port, mib, &mibvalue); + if (ret) { + dev_err(priv->dev, "error reading MIB counter %s\n", + mib->name); + } + data[i] = mibvalue; + } +} +EXPORT_SYMBOL_GPL(rtl8366_get_ethtool_stats); diff --git a/drivers/net/dsa/realtek/rtl8366rb.c b/drivers/net/dsa/realtek/rtl8366rb.c new file mode 100644 index 000000000000..25f88022b9e4 --- /dev/null +++ b/drivers/net/dsa/realtek/rtl8366rb.c @@ -0,0 +1,1873 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Realtek SMI subdriver for the Realtek RTL8366RB ethernet switch + * + * This is a sparsely documented chip, the only viable documentation seems + * to be a patched up code drop from the vendor that appear in various + * GPL source trees. + * + * Copyright (C) 2017 Linus Walleij <linus.walleij@linaro.org> + * Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org> + * Copyright (C) 2010 Antti Seppälä <a.seppala@gmail.com> + * Copyright (C) 2010 Roman Yeryomin <roman@advem.lv> + * Copyright (C) 2011 Colin Leitner <colin.leitner@googlemail.com> + */ + +#include <linux/bitops.h> +#include <linux/etherdevice.h> +#include <linux/if_bridge.h> +#include <linux/interrupt.h> +#include <linux/irqdomain.h> +#include <linux/irqchip/chained_irq.h> +#include <linux/of_irq.h> +#include <linux/regmap.h> + +#include "realtek.h" + +#define RTL8366RB_PORT_NUM_CPU 5 +#define RTL8366RB_NUM_PORTS 6 +#define RTL8366RB_PHY_NO_MAX 4 +#define RTL8366RB_PHY_ADDR_MAX 31 + +/* Switch Global Configuration register */ +#define RTL8366RB_SGCR 0x0000 +#define RTL8366RB_SGCR_EN_BC_STORM_CTRL BIT(0) +#define RTL8366RB_SGCR_MAX_LENGTH(a) ((a) << 4) +#define RTL8366RB_SGCR_MAX_LENGTH_MASK RTL8366RB_SGCR_MAX_LENGTH(0x3) +#define RTL8366RB_SGCR_MAX_LENGTH_1522 RTL8366RB_SGCR_MAX_LENGTH(0x0) +#define RTL8366RB_SGCR_MAX_LENGTH_1536 RTL8366RB_SGCR_MAX_LENGTH(0x1) +#define RTL8366RB_SGCR_MAX_LENGTH_1552 RTL8366RB_SGCR_MAX_LENGTH(0x2) +#define RTL8366RB_SGCR_MAX_LENGTH_16000 RTL8366RB_SGCR_MAX_LENGTH(0x3) +#define RTL8366RB_SGCR_EN_VLAN BIT(13) +#define RTL8366RB_SGCR_EN_VLAN_4KTB BIT(14) + +/* Port Enable Control register */ +#define RTL8366RB_PECR 0x0001 + +/* Switch per-port learning disablement register */ +#define RTL8366RB_PORT_LEARNDIS_CTRL 0x0002 + +/* Security control, actually aging register */ +#define RTL8366RB_SECURITY_CTRL 0x0003 + +#define RTL8366RB_SSCR2 0x0004 +#define RTL8366RB_SSCR2_DROP_UNKNOWN_DA BIT(0) + +/* Port Mode Control registers */ +#define RTL8366RB_PMC0 0x0005 +#define RTL8366RB_PMC0_SPI BIT(0) +#define RTL8366RB_PMC0_EN_AUTOLOAD BIT(1) +#define RTL8366RB_PMC0_PROBE BIT(2) +#define RTL8366RB_PMC0_DIS_BISR BIT(3) +#define RTL8366RB_PMC0_ADCTEST BIT(4) +#define RTL8366RB_PMC0_SRAM_DIAG BIT(5) +#define RTL8366RB_PMC0_EN_SCAN BIT(6) +#define RTL8366RB_PMC0_P4_IOMODE_SHIFT 7 +#define RTL8366RB_PMC0_P4_IOMODE_MASK GENMASK(9, 7) +#define RTL8366RB_PMC0_P5_IOMODE_SHIFT 10 +#define RTL8366RB_PMC0_P5_IOMODE_MASK GENMASK(12, 10) +#define RTL8366RB_PMC0_SDSMODE_SHIFT 13 +#define RTL8366RB_PMC0_SDSMODE_MASK GENMASK(15, 13) +#define RTL8366RB_PMC1 0x0006 + +/* Port Mirror Control Register */ +#define RTL8366RB_PMCR 0x0007 +#define RTL8366RB_PMCR_SOURCE_PORT(a) (a) +#define RTL8366RB_PMCR_SOURCE_PORT_MASK 0x000f +#define RTL8366RB_PMCR_MONITOR_PORT(a) ((a) << 4) +#define RTL8366RB_PMCR_MONITOR_PORT_MASK 0x00f0 +#define RTL8366RB_PMCR_MIRROR_RX BIT(8) +#define RTL8366RB_PMCR_MIRROR_TX BIT(9) +#define RTL8366RB_PMCR_MIRROR_SPC BIT(10) +#define RTL8366RB_PMCR_MIRROR_ISO BIT(11) + +/* bits 0..7 = port 0, bits 8..15 = port 1 */ +#define RTL8366RB_PAACR0 0x0010 +/* bits 0..7 = port 2, bits 8..15 = port 3 */ +#define RTL8366RB_PAACR1 0x0011 +/* bits 0..7 = port 4, bits 8..15 = port 5 */ +#define RTL8366RB_PAACR2 0x0012 +#define RTL8366RB_PAACR_SPEED_10M 0 +#define RTL8366RB_PAACR_SPEED_100M 1 +#define RTL8366RB_PAACR_SPEED_1000M 2 +#define RTL8366RB_PAACR_FULL_DUPLEX BIT(2) +#define RTL8366RB_PAACR_LINK_UP BIT(4) +#define RTL8366RB_PAACR_TX_PAUSE BIT(5) +#define RTL8366RB_PAACR_RX_PAUSE BIT(6) +#define RTL8366RB_PAACR_AN BIT(7) + +#define RTL8366RB_PAACR_CPU_PORT (RTL8366RB_PAACR_SPEED_1000M | \ + RTL8366RB_PAACR_FULL_DUPLEX | \ + RTL8366RB_PAACR_LINK_UP | \ + RTL8366RB_PAACR_TX_PAUSE | \ + RTL8366RB_PAACR_RX_PAUSE) + +/* bits 0..7 = port 0, bits 8..15 = port 1 */ +#define RTL8366RB_PSTAT0 0x0014 +/* bits 0..7 = port 2, bits 8..15 = port 3 */ +#define RTL8366RB_PSTAT1 0x0015 +/* bits 0..7 = port 4, bits 8..15 = port 5 */ +#define RTL8366RB_PSTAT2 0x0016 + +#define RTL8366RB_POWER_SAVING_REG 0x0021 + +/* Spanning tree status (STP) control, two bits per port per FID */ +#define RTL8366RB_STP_STATE_BASE 0x0050 /* 0x0050..0x0057 */ +#define RTL8366RB_STP_STATE_DISABLED 0x0 +#define RTL8366RB_STP_STATE_BLOCKING 0x1 +#define RTL8366RB_STP_STATE_LEARNING 0x2 +#define RTL8366RB_STP_STATE_FORWARDING 0x3 +#define RTL8366RB_STP_MASK GENMASK(1, 0) +#define RTL8366RB_STP_STATE(port, state) \ + ((state) << ((port) * 2)) +#define RTL8366RB_STP_STATE_MASK(port) \ + RTL8366RB_STP_STATE((port), RTL8366RB_STP_MASK) + +/* CPU port control reg */ +#define RTL8368RB_CPU_CTRL_REG 0x0061 +#define RTL8368RB_CPU_PORTS_MSK 0x00FF +/* Disables inserting custom tag length/type 0x8899 */ +#define RTL8368RB_CPU_NO_TAG BIT(15) + +#define RTL8366RB_SMAR0 0x0070 /* bits 0..15 */ +#define RTL8366RB_SMAR1 0x0071 /* bits 16..31 */ +#define RTL8366RB_SMAR2 0x0072 /* bits 32..47 */ + +#define RTL8366RB_RESET_CTRL_REG 0x0100 +#define RTL8366RB_CHIP_CTRL_RESET_HW BIT(0) +#define RTL8366RB_CHIP_CTRL_RESET_SW BIT(1) + +#define RTL8366RB_CHIP_ID_REG 0x0509 +#define RTL8366RB_CHIP_ID_8366 0x5937 +#define RTL8366RB_CHIP_VERSION_CTRL_REG 0x050A +#define RTL8366RB_CHIP_VERSION_MASK 0xf + +/* PHY registers control */ +#define RTL8366RB_PHY_ACCESS_CTRL_REG 0x8000 +#define RTL8366RB_PHY_CTRL_READ BIT(0) +#define RTL8366RB_PHY_CTRL_WRITE 0 +#define RTL8366RB_PHY_ACCESS_BUSY_REG 0x8001 +#define RTL8366RB_PHY_INT_BUSY BIT(0) +#define RTL8366RB_PHY_EXT_BUSY BIT(4) +#define RTL8366RB_PHY_ACCESS_DATA_REG 0x8002 +#define RTL8366RB_PHY_EXT_CTRL_REG 0x8010 +#define RTL8366RB_PHY_EXT_WRDATA_REG 0x8011 +#define RTL8366RB_PHY_EXT_RDDATA_REG 0x8012 + +#define RTL8366RB_PHY_REG_MASK 0x1f +#define RTL8366RB_PHY_PAGE_OFFSET 5 +#define RTL8366RB_PHY_PAGE_MASK (0xf << 5) +#define RTL8366RB_PHY_NO_OFFSET 9 +#define RTL8366RB_PHY_NO_MASK (0x1f << 9) + +/* VLAN Ingress Control Register 1, one bit per port. + * bit 0 .. 5 will make the switch drop ingress frames without + * VID such as untagged or priority-tagged frames for respective + * port. + * bit 6 .. 11 will make the switch drop ingress frames carrying + * a C-tag with VID != 0 for respective port. + */ +#define RTL8366RB_VLAN_INGRESS_CTRL1_REG 0x037E +#define RTL8366RB_VLAN_INGRESS_CTRL1_DROP(port) (BIT((port)) | BIT((port) + 6)) + +/* VLAN Ingress Control Register 2, one bit per port. + * bit0 .. bit5 will make the switch drop all ingress frames with + * a VLAN classification that does not include the port is in its + * member set. + */ +#define RTL8366RB_VLAN_INGRESS_CTRL2_REG 0x037f + +/* LED control registers */ +#define RTL8366RB_LED_BLINKRATE_REG 0x0430 +#define RTL8366RB_LED_BLINKRATE_MASK 0x0007 +#define RTL8366RB_LED_BLINKRATE_28MS 0x0000 +#define RTL8366RB_LED_BLINKRATE_56MS 0x0001 +#define RTL8366RB_LED_BLINKRATE_84MS 0x0002 +#define RTL8366RB_LED_BLINKRATE_111MS 0x0003 +#define RTL8366RB_LED_BLINKRATE_222MS 0x0004 +#define RTL8366RB_LED_BLINKRATE_446MS 0x0005 + +#define RTL8366RB_LED_CTRL_REG 0x0431 +#define RTL8366RB_LED_OFF 0x0 +#define RTL8366RB_LED_DUP_COL 0x1 +#define RTL8366RB_LED_LINK_ACT 0x2 +#define RTL8366RB_LED_SPD1000 0x3 +#define RTL8366RB_LED_SPD100 0x4 +#define RTL8366RB_LED_SPD10 0x5 +#define RTL8366RB_LED_SPD1000_ACT 0x6 +#define RTL8366RB_LED_SPD100_ACT 0x7 +#define RTL8366RB_LED_SPD10_ACT 0x8 +#define RTL8366RB_LED_SPD100_10_ACT 0x9 +#define RTL8366RB_LED_FIBER 0xa +#define RTL8366RB_LED_AN_FAULT 0xb +#define RTL8366RB_LED_LINK_RX 0xc +#define RTL8366RB_LED_LINK_TX 0xd +#define RTL8366RB_LED_MASTER 0xe +#define RTL8366RB_LED_FORCE 0xf +#define RTL8366RB_LED_0_1_CTRL_REG 0x0432 +#define RTL8366RB_LED_1_OFFSET 6 +#define RTL8366RB_LED_2_3_CTRL_REG 0x0433 +#define RTL8366RB_LED_3_OFFSET 6 + +#define RTL8366RB_MIB_COUNT 33 +#define RTL8366RB_GLOBAL_MIB_COUNT 1 +#define RTL8366RB_MIB_COUNTER_PORT_OFFSET 0x0050 +#define RTL8366RB_MIB_COUNTER_BASE 0x1000 +#define RTL8366RB_MIB_CTRL_REG 0x13F0 +#define RTL8366RB_MIB_CTRL_USER_MASK 0x0FFC +#define RTL8366RB_MIB_CTRL_BUSY_MASK BIT(0) +#define RTL8366RB_MIB_CTRL_RESET_MASK BIT(1) +#define RTL8366RB_MIB_CTRL_PORT_RESET(_p) BIT(2 + (_p)) +#define RTL8366RB_MIB_CTRL_GLOBAL_RESET BIT(11) + +#define RTL8366RB_PORT_VLAN_CTRL_BASE 0x0063 +#define RTL8366RB_PORT_VLAN_CTRL_REG(_p) \ + (RTL8366RB_PORT_VLAN_CTRL_BASE + (_p) / 4) +#define RTL8366RB_PORT_VLAN_CTRL_MASK 0xf +#define RTL8366RB_PORT_VLAN_CTRL_SHIFT(_p) (4 * ((_p) % 4)) + +#define RTL8366RB_VLAN_TABLE_READ_BASE 0x018C +#define RTL8366RB_VLAN_TABLE_WRITE_BASE 0x0185 + +#define RTL8366RB_TABLE_ACCESS_CTRL_REG 0x0180 +#define RTL8366RB_TABLE_VLAN_READ_CTRL 0x0E01 +#define RTL8366RB_TABLE_VLAN_WRITE_CTRL 0x0F01 + +#define RTL8366RB_VLAN_MC_BASE(_x) (0x0020 + (_x) * 3) + +#define RTL8366RB_PORT_LINK_STATUS_BASE 0x0014 +#define RTL8366RB_PORT_STATUS_SPEED_MASK 0x0003 +#define RTL8366RB_PORT_STATUS_DUPLEX_MASK 0x0004 +#define RTL8366RB_PORT_STATUS_LINK_MASK 0x0010 +#define RTL8366RB_PORT_STATUS_TXPAUSE_MASK 0x0020 +#define RTL8366RB_PORT_STATUS_RXPAUSE_MASK 0x0040 +#define RTL8366RB_PORT_STATUS_AN_MASK 0x0080 + +#define RTL8366RB_NUM_VLANS 16 +#define RTL8366RB_NUM_LEDGROUPS 4 +#define RTL8366RB_NUM_VIDS 4096 +#define RTL8366RB_PRIORITYMAX 7 +#define RTL8366RB_NUM_FIDS 8 +#define RTL8366RB_FIDMAX 7 + +#define RTL8366RB_PORT_1 BIT(0) /* In userspace port 0 */ +#define RTL8366RB_PORT_2 BIT(1) /* In userspace port 1 */ +#define RTL8366RB_PORT_3 BIT(2) /* In userspace port 2 */ +#define RTL8366RB_PORT_4 BIT(3) /* In userspace port 3 */ +#define RTL8366RB_PORT_5 BIT(4) /* In userspace port 4 */ + +#define RTL8366RB_PORT_CPU BIT(5) /* CPU port */ + +#define RTL8366RB_PORT_ALL (RTL8366RB_PORT_1 | \ + RTL8366RB_PORT_2 | \ + RTL8366RB_PORT_3 | \ + RTL8366RB_PORT_4 | \ + RTL8366RB_PORT_5 | \ + RTL8366RB_PORT_CPU) + +#define RTL8366RB_PORT_ALL_BUT_CPU (RTL8366RB_PORT_1 | \ + RTL8366RB_PORT_2 | \ + RTL8366RB_PORT_3 | \ + RTL8366RB_PORT_4 | \ + RTL8366RB_PORT_5) + +#define RTL8366RB_PORT_ALL_EXTERNAL (RTL8366RB_PORT_1 | \ + RTL8366RB_PORT_2 | \ + RTL8366RB_PORT_3 | \ + RTL8366RB_PORT_4) + +#define RTL8366RB_PORT_ALL_INTERNAL RTL8366RB_PORT_CPU + +/* First configuration word per member config, VID and prio */ +#define RTL8366RB_VLAN_VID_MASK 0xfff +#define RTL8366RB_VLAN_PRIORITY_SHIFT 12 +#define RTL8366RB_VLAN_PRIORITY_MASK 0x7 +/* Second configuration word per member config, member and untagged */ +#define RTL8366RB_VLAN_UNTAG_SHIFT 8 +#define RTL8366RB_VLAN_UNTAG_MASK 0xff +#define RTL8366RB_VLAN_MEMBER_MASK 0xff +/* Third config word per member config, STAG currently unused */ +#define RTL8366RB_VLAN_STAG_MBR_MASK 0xff +#define RTL8366RB_VLAN_STAG_MBR_SHIFT 8 +#define RTL8366RB_VLAN_STAG_IDX_MASK 0x7 +#define RTL8366RB_VLAN_STAG_IDX_SHIFT 5 +#define RTL8366RB_VLAN_FID_MASK 0x7 + +/* Port ingress bandwidth control */ +#define RTL8366RB_IB_BASE 0x0200 +#define RTL8366RB_IB_REG(pnum) (RTL8366RB_IB_BASE + (pnum)) +#define RTL8366RB_IB_BDTH_MASK 0x3fff +#define RTL8366RB_IB_PREIFG BIT(14) + +/* Port egress bandwidth control */ +#define RTL8366RB_EB_BASE 0x02d1 +#define RTL8366RB_EB_REG(pnum) (RTL8366RB_EB_BASE + (pnum)) +#define RTL8366RB_EB_BDTH_MASK 0x3fff +#define RTL8366RB_EB_PREIFG_REG 0x02f8 +#define RTL8366RB_EB_PREIFG BIT(9) + +#define RTL8366RB_BDTH_SW_MAX 1048512 /* 1048576? */ +#define RTL8366RB_BDTH_UNIT 64 +#define RTL8366RB_BDTH_REG_DEFAULT 16383 + +/* QOS */ +#define RTL8366RB_QOS BIT(15) +/* Include/Exclude Preamble and IFG (20 bytes). 0:Exclude, 1:Include. */ +#define RTL8366RB_QOS_DEFAULT_PREIFG 1 + +/* Interrupt handling */ +#define RTL8366RB_INTERRUPT_CONTROL_REG 0x0440 +#define RTL8366RB_INTERRUPT_POLARITY BIT(0) +#define RTL8366RB_P4_RGMII_LED BIT(2) +#define RTL8366RB_INTERRUPT_MASK_REG 0x0441 +#define RTL8366RB_INTERRUPT_LINK_CHGALL GENMASK(11, 0) +#define RTL8366RB_INTERRUPT_ACLEXCEED BIT(8) +#define RTL8366RB_INTERRUPT_STORMEXCEED BIT(9) +#define RTL8366RB_INTERRUPT_P4_FIBER BIT(12) +#define RTL8366RB_INTERRUPT_P4_UTP BIT(13) +#define RTL8366RB_INTERRUPT_VALID (RTL8366RB_INTERRUPT_LINK_CHGALL | \ + RTL8366RB_INTERRUPT_ACLEXCEED | \ + RTL8366RB_INTERRUPT_STORMEXCEED | \ + RTL8366RB_INTERRUPT_P4_FIBER | \ + RTL8366RB_INTERRUPT_P4_UTP) +#define RTL8366RB_INTERRUPT_STATUS_REG 0x0442 +#define RTL8366RB_NUM_INTERRUPT 14 /* 0..13 */ + +/* Port isolation registers */ +#define RTL8366RB_PORT_ISO_BASE 0x0F08 +#define RTL8366RB_PORT_ISO(pnum) (RTL8366RB_PORT_ISO_BASE + (pnum)) +#define RTL8366RB_PORT_ISO_EN BIT(0) +#define RTL8366RB_PORT_ISO_PORTS_MASK GENMASK(7, 1) +#define RTL8366RB_PORT_ISO_PORTS(pmask) ((pmask) << 1) + +/* bits 0..5 enable force when cleared */ +#define RTL8366RB_MAC_FORCE_CTRL_REG 0x0F11 + +#define RTL8366RB_OAM_PARSER_REG 0x0F14 +#define RTL8366RB_OAM_MULTIPLEXER_REG 0x0F15 + +#define RTL8366RB_GREEN_FEATURE_REG 0x0F51 +#define RTL8366RB_GREEN_FEATURE_MSK 0x0007 +#define RTL8366RB_GREEN_FEATURE_TX BIT(0) +#define RTL8366RB_GREEN_FEATURE_RX BIT(2) + +/** + * struct rtl8366rb - RTL8366RB-specific data + * @max_mtu: per-port max MTU setting + * @pvid_enabled: if PVID is set for respective port + */ +struct rtl8366rb { + unsigned int max_mtu[RTL8366RB_NUM_PORTS]; + bool pvid_enabled[RTL8366RB_NUM_PORTS]; +}; + +static struct rtl8366_mib_counter rtl8366rb_mib_counters[] = { + { 0, 0, 4, "IfInOctets" }, + { 0, 4, 4, "EtherStatsOctets" }, + { 0, 8, 2, "EtherStatsUnderSizePkts" }, + { 0, 10, 2, "EtherFragments" }, + { 0, 12, 2, "EtherStatsPkts64Octets" }, + { 0, 14, 2, "EtherStatsPkts65to127Octets" }, + { 0, 16, 2, "EtherStatsPkts128to255Octets" }, + { 0, 18, 2, "EtherStatsPkts256to511Octets" }, + { 0, 20, 2, "EtherStatsPkts512to1023Octets" }, + { 0, 22, 2, "EtherStatsPkts1024to1518Octets" }, + { 0, 24, 2, "EtherOversizeStats" }, + { 0, 26, 2, "EtherStatsJabbers" }, + { 0, 28, 2, "IfInUcastPkts" }, + { 0, 30, 2, "EtherStatsMulticastPkts" }, + { 0, 32, 2, "EtherStatsBroadcastPkts" }, + { 0, 34, 2, "EtherStatsDropEvents" }, + { 0, 36, 2, "Dot3StatsFCSErrors" }, + { 0, 38, 2, "Dot3StatsSymbolErrors" }, + { 0, 40, 2, "Dot3InPauseFrames" }, + { 0, 42, 2, "Dot3ControlInUnknownOpcodes" }, + { 0, 44, 4, "IfOutOctets" }, + { 0, 48, 2, "Dot3StatsSingleCollisionFrames" }, + { 0, 50, 2, "Dot3StatMultipleCollisionFrames" }, + { 0, 52, 2, "Dot3sDeferredTransmissions" }, + { 0, 54, 2, "Dot3StatsLateCollisions" }, + { 0, 56, 2, "EtherStatsCollisions" }, + { 0, 58, 2, "Dot3StatsExcessiveCollisions" }, + { 0, 60, 2, "Dot3OutPauseFrames" }, + { 0, 62, 2, "Dot1dBasePortDelayExceededDiscards" }, + { 0, 64, 2, "Dot1dTpPortInDiscards" }, + { 0, 66, 2, "IfOutUcastPkts" }, + { 0, 68, 2, "IfOutMulticastPkts" }, + { 0, 70, 2, "IfOutBroadcastPkts" }, +}; + +static int rtl8366rb_get_mib_counter(struct realtek_priv *priv, + int port, + struct rtl8366_mib_counter *mib, + u64 *mibvalue) +{ + u32 addr, val; + int ret; + int i; + + addr = RTL8366RB_MIB_COUNTER_BASE + + RTL8366RB_MIB_COUNTER_PORT_OFFSET * (port) + + mib->offset; + + /* Writing access counter address first + * then ASIC will prepare 64bits counter wait for being retrived + */ + ret = regmap_write(priv->map, addr, 0); /* Write whatever */ + if (ret) + return ret; + + /* Read MIB control register */ + ret = regmap_read(priv->map, RTL8366RB_MIB_CTRL_REG, &val); + if (ret) + return -EIO; + + if (val & RTL8366RB_MIB_CTRL_BUSY_MASK) + return -EBUSY; + + if (val & RTL8366RB_MIB_CTRL_RESET_MASK) + return -EIO; + + /* Read each individual MIB 16 bits at the time */ + *mibvalue = 0; + for (i = mib->length; i > 0; i--) { + ret = regmap_read(priv->map, addr + (i - 1), &val); + if (ret) + return ret; + *mibvalue = (*mibvalue << 16) | (val & 0xFFFF); + } + return 0; +} + +static u32 rtl8366rb_get_irqmask(struct irq_data *d) +{ + int line = irqd_to_hwirq(d); + u32 val; + + /* For line interrupts we combine link down in bits + * 6..11 with link up in bits 0..5 into one interrupt. + */ + if (line < 12) + val = BIT(line) | BIT(line + 6); + else + val = BIT(line); + return val; +} + +static void rtl8366rb_mask_irq(struct irq_data *d) +{ + struct realtek_priv *priv = irq_data_get_irq_chip_data(d); + int ret; + + ret = regmap_update_bits(priv->map, RTL8366RB_INTERRUPT_MASK_REG, + rtl8366rb_get_irqmask(d), 0); + if (ret) + dev_err(priv->dev, "could not mask IRQ\n"); +} + +static void rtl8366rb_unmask_irq(struct irq_data *d) +{ + struct realtek_priv *priv = irq_data_get_irq_chip_data(d); + int ret; + + ret = regmap_update_bits(priv->map, RTL8366RB_INTERRUPT_MASK_REG, + rtl8366rb_get_irqmask(d), + rtl8366rb_get_irqmask(d)); + if (ret) + dev_err(priv->dev, "could not unmask IRQ\n"); +} + +static irqreturn_t rtl8366rb_irq(int irq, void *data) +{ + struct realtek_priv *priv = data; + u32 stat; + int ret; + + /* This clears the IRQ status register */ + ret = regmap_read(priv->map, RTL8366RB_INTERRUPT_STATUS_REG, + &stat); + if (ret) { + dev_err(priv->dev, "can't read interrupt status\n"); + return IRQ_NONE; + } + stat &= RTL8366RB_INTERRUPT_VALID; + if (!stat) + return IRQ_NONE; + while (stat) { + int line = __ffs(stat); + int child_irq; + + stat &= ~BIT(line); + /* For line interrupts we combine link down in bits + * 6..11 with link up in bits 0..5 into one interrupt. + */ + if (line < 12 && line > 5) + line -= 5; + child_irq = irq_find_mapping(priv->irqdomain, line); + handle_nested_irq(child_irq); + } + return IRQ_HANDLED; +} + +static struct irq_chip rtl8366rb_irq_chip = { + .name = "RTL8366RB", + .irq_mask = rtl8366rb_mask_irq, + .irq_unmask = rtl8366rb_unmask_irq, +}; + +static int rtl8366rb_irq_map(struct irq_domain *domain, unsigned int irq, + irq_hw_number_t hwirq) +{ + irq_set_chip_data(irq, domain->host_data); + irq_set_chip_and_handler(irq, &rtl8366rb_irq_chip, handle_simple_irq); + irq_set_nested_thread(irq, 1); + irq_set_noprobe(irq); + + return 0; +} + +static void rtl8366rb_irq_unmap(struct irq_domain *d, unsigned int irq) +{ + irq_set_nested_thread(irq, 0); + irq_set_chip_and_handler(irq, NULL, NULL); + irq_set_chip_data(irq, NULL); +} + +static const struct irq_domain_ops rtl8366rb_irqdomain_ops = { + .map = rtl8366rb_irq_map, + .unmap = rtl8366rb_irq_unmap, + .xlate = irq_domain_xlate_onecell, +}; + +static int rtl8366rb_setup_cascaded_irq(struct realtek_priv *priv) +{ + struct device_node *intc; + unsigned long irq_trig; + int irq; + int ret; + u32 val; + int i; + + intc = of_get_child_by_name(priv->dev->of_node, "interrupt-controller"); + if (!intc) { + dev_err(priv->dev, "missing child interrupt-controller node\n"); + return -EINVAL; + } + /* RB8366RB IRQs cascade off this one */ + irq = of_irq_get(intc, 0); + if (irq <= 0) { + dev_err(priv->dev, "failed to get parent IRQ\n"); + ret = irq ? irq : -EINVAL; + goto out_put_node; + } + + /* This clears the IRQ status register */ + ret = regmap_read(priv->map, RTL8366RB_INTERRUPT_STATUS_REG, + &val); + if (ret) { + dev_err(priv->dev, "can't read interrupt status\n"); + goto out_put_node; + } + + /* Fetch IRQ edge information from the descriptor */ + irq_trig = irqd_get_trigger_type(irq_get_irq_data(irq)); + switch (irq_trig) { + case IRQF_TRIGGER_RISING: + case IRQF_TRIGGER_HIGH: + dev_info(priv->dev, "active high/rising IRQ\n"); + val = 0; + break; + case IRQF_TRIGGER_FALLING: + case IRQF_TRIGGER_LOW: + dev_info(priv->dev, "active low/falling IRQ\n"); + val = RTL8366RB_INTERRUPT_POLARITY; + break; + } + ret = regmap_update_bits(priv->map, RTL8366RB_INTERRUPT_CONTROL_REG, + RTL8366RB_INTERRUPT_POLARITY, + val); + if (ret) { + dev_err(priv->dev, "could not configure IRQ polarity\n"); + goto out_put_node; + } + + ret = devm_request_threaded_irq(priv->dev, irq, NULL, + rtl8366rb_irq, IRQF_ONESHOT, + "RTL8366RB", priv); + if (ret) { + dev_err(priv->dev, "unable to request irq: %d\n", ret); + goto out_put_node; + } + priv->irqdomain = irq_domain_add_linear(intc, + RTL8366RB_NUM_INTERRUPT, + &rtl8366rb_irqdomain_ops, + priv); + if (!priv->irqdomain) { + dev_err(priv->dev, "failed to create IRQ domain\n"); + ret = -EINVAL; + goto out_put_node; + } + for (i = 0; i < priv->num_ports; i++) + irq_set_parent(irq_create_mapping(priv->irqdomain, i), irq); + +out_put_node: + of_node_put(intc); + return ret; +} + +static int rtl8366rb_set_addr(struct realtek_priv *priv) +{ + u8 addr[ETH_ALEN]; + u16 val; + int ret; + + eth_random_addr(addr); + + dev_info(priv->dev, "set MAC: %02X:%02X:%02X:%02X:%02X:%02X\n", + addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); + val = addr[0] << 8 | addr[1]; + ret = regmap_write(priv->map, RTL8366RB_SMAR0, val); + if (ret) + return ret; + val = addr[2] << 8 | addr[3]; + ret = regmap_write(priv->map, RTL8366RB_SMAR1, val); + if (ret) + return ret; + val = addr[4] << 8 | addr[5]; + ret = regmap_write(priv->map, RTL8366RB_SMAR2, val); + if (ret) + return ret; + + return 0; +} + +/* Found in a vendor driver */ + +/* Struct for handling the jam tables' entries */ +struct rtl8366rb_jam_tbl_entry { + u16 reg; + u16 val; +}; + +/* For the "version 0" early silicon, appear in most source releases */ +static const struct rtl8366rb_jam_tbl_entry rtl8366rb_init_jam_ver_0[] = { + {0x000B, 0x0001}, {0x03A6, 0x0100}, {0x03A7, 0x0001}, {0x02D1, 0x3FFF}, + {0x02D2, 0x3FFF}, {0x02D3, 0x3FFF}, {0x02D4, 0x3FFF}, {0x02D5, 0x3FFF}, + {0x02D6, 0x3FFF}, {0x02D7, 0x3FFF}, {0x02D8, 0x3FFF}, {0x022B, 0x0688}, + {0x022C, 0x0FAC}, {0x03D0, 0x4688}, {0x03D1, 0x01F5}, {0x0000, 0x0830}, + {0x02F9, 0x0200}, {0x02F7, 0x7FFF}, {0x02F8, 0x03FF}, {0x0080, 0x03E8}, + {0x0081, 0x00CE}, {0x0082, 0x00DA}, {0x0083, 0x0230}, {0xBE0F, 0x2000}, + {0x0231, 0x422A}, {0x0232, 0x422A}, {0x0233, 0x422A}, {0x0234, 0x422A}, + {0x0235, 0x422A}, {0x0236, 0x422A}, {0x0237, 0x422A}, {0x0238, 0x422A}, + {0x0239, 0x422A}, {0x023A, 0x422A}, {0x023B, 0x422A}, {0x023C, 0x422A}, + {0x023D, 0x422A}, {0x023E, 0x422A}, {0x023F, 0x422A}, {0x0240, 0x422A}, + {0x0241, 0x422A}, {0x0242, 0x422A}, {0x0243, 0x422A}, {0x0244, 0x422A}, + {0x0245, 0x422A}, {0x0246, 0x422A}, {0x0247, 0x422A}, {0x0248, 0x422A}, + {0x0249, 0x0146}, {0x024A, 0x0146}, {0x024B, 0x0146}, {0xBE03, 0xC961}, + {0x024D, 0x0146}, {0x024E, 0x0146}, {0x024F, 0x0146}, {0x0250, 0x0146}, + {0xBE64, 0x0226}, {0x0252, 0x0146}, {0x0253, 0x0146}, {0x024C, 0x0146}, + {0x0251, 0x0146}, {0x0254, 0x0146}, {0xBE62, 0x3FD0}, {0x0084, 0x0320}, + {0x0255, 0x0146}, {0x0256, 0x0146}, {0x0257, 0x0146}, {0x0258, 0x0146}, + {0x0259, 0x0146}, {0x025A, 0x0146}, {0x025B, 0x0146}, {0x025C, 0x0146}, + {0x025D, 0x0146}, {0x025E, 0x0146}, {0x025F, 0x0146}, {0x0260, 0x0146}, + {0x0261, 0xA23F}, {0x0262, 0x0294}, {0x0263, 0xA23F}, {0x0264, 0x0294}, + {0x0265, 0xA23F}, {0x0266, 0x0294}, {0x0267, 0xA23F}, {0x0268, 0x0294}, + {0x0269, 0xA23F}, {0x026A, 0x0294}, {0x026B, 0xA23F}, {0x026C, 0x0294}, + {0x026D, 0xA23F}, {0x026E, 0x0294}, {0x026F, 0xA23F}, {0x0270, 0x0294}, + {0x02F5, 0x0048}, {0xBE09, 0x0E00}, {0xBE1E, 0x0FA0}, {0xBE14, 0x8448}, + {0xBE15, 0x1007}, {0xBE4A, 0xA284}, {0xC454, 0x3F0B}, {0xC474, 0x3F0B}, + {0xBE48, 0x3672}, {0xBE4B, 0x17A7}, {0xBE4C, 0x0B15}, {0xBE52, 0x0EDD}, + {0xBE49, 0x8C00}, {0xBE5B, 0x785C}, {0xBE5C, 0x785C}, {0xBE5D, 0x785C}, + {0xBE61, 0x368A}, {0xBE63, 0x9B84}, {0xC456, 0xCC13}, {0xC476, 0xCC13}, + {0xBE65, 0x307D}, {0xBE6D, 0x0005}, {0xBE6E, 0xE120}, {0xBE2E, 0x7BAF}, +}; + +/* This v1 init sequence is from Belkin F5D8235 U-Boot release */ +static const struct rtl8366rb_jam_tbl_entry rtl8366rb_init_jam_ver_1[] = { + {0x0000, 0x0830}, {0x0001, 0x8000}, {0x0400, 0x8130}, {0xBE78, 0x3C3C}, + {0x0431, 0x5432}, {0xBE37, 0x0CE4}, {0x02FA, 0xFFDF}, {0x02FB, 0xFFE0}, + {0xC44C, 0x1585}, {0xC44C, 0x1185}, {0xC44C, 0x1585}, {0xC46C, 0x1585}, + {0xC46C, 0x1185}, {0xC46C, 0x1585}, {0xC451, 0x2135}, {0xC471, 0x2135}, + {0xBE10, 0x8140}, {0xBE15, 0x0007}, {0xBE6E, 0xE120}, {0xBE69, 0xD20F}, + {0xBE6B, 0x0320}, {0xBE24, 0xB000}, {0xBE23, 0xFF51}, {0xBE22, 0xDF20}, + {0xBE21, 0x0140}, {0xBE20, 0x00BB}, {0xBE24, 0xB800}, {0xBE24, 0x0000}, + {0xBE24, 0x7000}, {0xBE23, 0xFF51}, {0xBE22, 0xDF60}, {0xBE21, 0x0140}, + {0xBE20, 0x0077}, {0xBE24, 0x7800}, {0xBE24, 0x0000}, {0xBE2E, 0x7B7A}, + {0xBE36, 0x0CE4}, {0x02F5, 0x0048}, {0xBE77, 0x2940}, {0x000A, 0x83E0}, + {0xBE79, 0x3C3C}, {0xBE00, 0x1340}, +}; + +/* This v2 init sequence is from Belkin F5D8235 U-Boot release */ +static const struct rtl8366rb_jam_tbl_entry rtl8366rb_init_jam_ver_2[] = { + {0x0450, 0x0000}, {0x0400, 0x8130}, {0x000A, 0x83ED}, {0x0431, 0x5432}, + {0xC44F, 0x6250}, {0xC46F, 0x6250}, {0xC456, 0x0C14}, {0xC476, 0x0C14}, + {0xC44C, 0x1C85}, {0xC44C, 0x1885}, {0xC44C, 0x1C85}, {0xC46C, 0x1C85}, + {0xC46C, 0x1885}, {0xC46C, 0x1C85}, {0xC44C, 0x0885}, {0xC44C, 0x0881}, + {0xC44C, 0x0885}, {0xC46C, 0x0885}, {0xC46C, 0x0881}, {0xC46C, 0x0885}, + {0xBE2E, 0x7BA7}, {0xBE36, 0x1000}, {0xBE37, 0x1000}, {0x8000, 0x0001}, + {0xBE69, 0xD50F}, {0x8000, 0x0000}, {0xBE69, 0xD50F}, {0xBE6E, 0x0320}, + {0xBE77, 0x2940}, {0xBE78, 0x3C3C}, {0xBE79, 0x3C3C}, {0xBE6E, 0xE120}, + {0x8000, 0x0001}, {0xBE15, 0x1007}, {0x8000, 0x0000}, {0xBE15, 0x1007}, + {0xBE14, 0x0448}, {0xBE1E, 0x00A0}, {0xBE10, 0x8160}, {0xBE10, 0x8140}, + {0xBE00, 0x1340}, {0x0F51, 0x0010}, +}; + +/* Appears in a DDWRT code dump */ +static const struct rtl8366rb_jam_tbl_entry rtl8366rb_init_jam_ver_3[] = { + {0x0000, 0x0830}, {0x0400, 0x8130}, {0x000A, 0x83ED}, {0x0431, 0x5432}, + {0x0F51, 0x0017}, {0x02F5, 0x0048}, {0x02FA, 0xFFDF}, {0x02FB, 0xFFE0}, + {0xC456, 0x0C14}, {0xC476, 0x0C14}, {0xC454, 0x3F8B}, {0xC474, 0x3F8B}, + {0xC450, 0x2071}, {0xC470, 0x2071}, {0xC451, 0x226B}, {0xC471, 0x226B}, + {0xC452, 0xA293}, {0xC472, 0xA293}, {0xC44C, 0x1585}, {0xC44C, 0x1185}, + {0xC44C, 0x1585}, {0xC46C, 0x1585}, {0xC46C, 0x1185}, {0xC46C, 0x1585}, + {0xC44C, 0x0185}, {0xC44C, 0x0181}, {0xC44C, 0x0185}, {0xC46C, 0x0185}, + {0xC46C, 0x0181}, {0xC46C, 0x0185}, {0xBE24, 0xB000}, {0xBE23, 0xFF51}, + {0xBE22, 0xDF20}, {0xBE21, 0x0140}, {0xBE20, 0x00BB}, {0xBE24, 0xB800}, + {0xBE24, 0x0000}, {0xBE24, 0x7000}, {0xBE23, 0xFF51}, {0xBE22, 0xDF60}, + {0xBE21, 0x0140}, {0xBE20, 0x0077}, {0xBE24, 0x7800}, {0xBE24, 0x0000}, + {0xBE2E, 0x7BA7}, {0xBE36, 0x1000}, {0xBE37, 0x1000}, {0x8000, 0x0001}, + {0xBE69, 0xD50F}, {0x8000, 0x0000}, {0xBE69, 0xD50F}, {0xBE6B, 0x0320}, + {0xBE77, 0x2800}, {0xBE78, 0x3C3C}, {0xBE79, 0x3C3C}, {0xBE6E, 0xE120}, + {0x8000, 0x0001}, {0xBE10, 0x8140}, {0x8000, 0x0000}, {0xBE10, 0x8140}, + {0xBE15, 0x1007}, {0xBE14, 0x0448}, {0xBE1E, 0x00A0}, {0xBE10, 0x8160}, + {0xBE10, 0x8140}, {0xBE00, 0x1340}, {0x0450, 0x0000}, {0x0401, 0x0000}, +}; + +/* Belkin F5D8235 v1, "belkin,f5d8235-v1" */ +static const struct rtl8366rb_jam_tbl_entry rtl8366rb_init_jam_f5d8235[] = { + {0x0242, 0x02BF}, {0x0245, 0x02BF}, {0x0248, 0x02BF}, {0x024B, 0x02BF}, + {0x024E, 0x02BF}, {0x0251, 0x02BF}, {0x0254, 0x0A3F}, {0x0256, 0x0A3F}, + {0x0258, 0x0A3F}, {0x025A, 0x0A3F}, {0x025C, 0x0A3F}, {0x025E, 0x0A3F}, + {0x0263, 0x007C}, {0x0100, 0x0004}, {0xBE5B, 0x3500}, {0x800E, 0x200F}, + {0xBE1D, 0x0F00}, {0x8001, 0x5011}, {0x800A, 0xA2F4}, {0x800B, 0x17A3}, + {0xBE4B, 0x17A3}, {0xBE41, 0x5011}, {0xBE17, 0x2100}, {0x8000, 0x8304}, + {0xBE40, 0x8304}, {0xBE4A, 0xA2F4}, {0x800C, 0xA8D5}, {0x8014, 0x5500}, + {0x8015, 0x0004}, {0xBE4C, 0xA8D5}, {0xBE59, 0x0008}, {0xBE09, 0x0E00}, + {0xBE36, 0x1036}, {0xBE37, 0x1036}, {0x800D, 0x00FF}, {0xBE4D, 0x00FF}, +}; + +/* DGN3500, "netgear,dgn3500", "netgear,dgn3500b" */ +static const struct rtl8366rb_jam_tbl_entry rtl8366rb_init_jam_dgn3500[] = { + {0x0000, 0x0830}, {0x0400, 0x8130}, {0x000A, 0x83ED}, {0x0F51, 0x0017}, + {0x02F5, 0x0048}, {0x02FA, 0xFFDF}, {0x02FB, 0xFFE0}, {0x0450, 0x0000}, + {0x0401, 0x0000}, {0x0431, 0x0960}, +}; + +/* This jam table activates "green ethernet", which means low power mode + * and is claimed to detect the cable length and not use more power than + * necessary, and the ports should enter power saving mode 10 seconds after + * a cable is disconnected. Seems to always be the same. + */ +static const struct rtl8366rb_jam_tbl_entry rtl8366rb_green_jam[] = { + {0xBE78, 0x323C}, {0xBE77, 0x5000}, {0xBE2E, 0x7BA7}, + {0xBE59, 0x3459}, {0xBE5A, 0x745A}, {0xBE5B, 0x785C}, + {0xBE5C, 0x785C}, {0xBE6E, 0xE120}, {0xBE79, 0x323C}, +}; + +/* Function that jams the tables in the proper registers */ +static int rtl8366rb_jam_table(const struct rtl8366rb_jam_tbl_entry *jam_table, + int jam_size, struct realtek_priv *priv, + bool write_dbg) +{ + u32 val; + int ret; + int i; + + for (i = 0; i < jam_size; i++) { + if ((jam_table[i].reg & 0xBE00) == 0xBE00) { + ret = regmap_read(priv->map, + RTL8366RB_PHY_ACCESS_BUSY_REG, + &val); + if (ret) + return ret; + if (!(val & RTL8366RB_PHY_INT_BUSY)) { + ret = regmap_write(priv->map, + RTL8366RB_PHY_ACCESS_CTRL_REG, + RTL8366RB_PHY_CTRL_WRITE); + if (ret) + return ret; + } + } + if (write_dbg) + dev_dbg(priv->dev, "jam %04x into register %04x\n", + jam_table[i].val, + jam_table[i].reg); + ret = regmap_write(priv->map, + jam_table[i].reg, + jam_table[i].val); + if (ret) + return ret; + } + return 0; +} + +static int rtl8366rb_setup(struct dsa_switch *ds) +{ + struct realtek_priv *priv = ds->priv; + const struct rtl8366rb_jam_tbl_entry *jam_table; + struct rtl8366rb *rb; + u32 chip_ver = 0; + u32 chip_id = 0; + int jam_size; + u32 val; + int ret; + int i; + + rb = priv->chip_data; + + ret = regmap_read(priv->map, RTL8366RB_CHIP_ID_REG, &chip_id); + if (ret) { + dev_err(priv->dev, "unable to read chip id\n"); + return ret; + } + + switch (chip_id) { + case RTL8366RB_CHIP_ID_8366: + break; + default: + dev_err(priv->dev, "unknown chip id (%04x)\n", chip_id); + return -ENODEV; + } + + ret = regmap_read(priv->map, RTL8366RB_CHIP_VERSION_CTRL_REG, + &chip_ver); + if (ret) { + dev_err(priv->dev, "unable to read chip version\n"); + return ret; + } + + dev_info(priv->dev, "RTL%04x ver %u chip found\n", + chip_id, chip_ver & RTL8366RB_CHIP_VERSION_MASK); + + /* Do the init dance using the right jam table */ + switch (chip_ver) { + case 0: + jam_table = rtl8366rb_init_jam_ver_0; + jam_size = ARRAY_SIZE(rtl8366rb_init_jam_ver_0); + break; + case 1: + jam_table = rtl8366rb_init_jam_ver_1; + jam_size = ARRAY_SIZE(rtl8366rb_init_jam_ver_1); + break; + case 2: + jam_table = rtl8366rb_init_jam_ver_2; + jam_size = ARRAY_SIZE(rtl8366rb_init_jam_ver_2); + break; + default: + jam_table = rtl8366rb_init_jam_ver_3; + jam_size = ARRAY_SIZE(rtl8366rb_init_jam_ver_3); + break; + } + + /* Special jam tables for special routers + * TODO: are these necessary? Maintainers, please test + * without them, using just the off-the-shelf tables. + */ + if (of_machine_is_compatible("belkin,f5d8235-v1")) { + jam_table = rtl8366rb_init_jam_f5d8235; + jam_size = ARRAY_SIZE(rtl8366rb_init_jam_f5d8235); + } + if (of_machine_is_compatible("netgear,dgn3500") || + of_machine_is_compatible("netgear,dgn3500b")) { + jam_table = rtl8366rb_init_jam_dgn3500; + jam_size = ARRAY_SIZE(rtl8366rb_init_jam_dgn3500); + } + + ret = rtl8366rb_jam_table(jam_table, jam_size, priv, true); + if (ret) + return ret; + + /* Isolate all user ports so they can only send packets to itself and the CPU port */ + for (i = 0; i < RTL8366RB_PORT_NUM_CPU; i++) { + ret = regmap_write(priv->map, RTL8366RB_PORT_ISO(i), + RTL8366RB_PORT_ISO_PORTS(BIT(RTL8366RB_PORT_NUM_CPU)) | + RTL8366RB_PORT_ISO_EN); + if (ret) + return ret; + } + /* CPU port can send packets to all ports */ + ret = regmap_write(priv->map, RTL8366RB_PORT_ISO(RTL8366RB_PORT_NUM_CPU), + RTL8366RB_PORT_ISO_PORTS(dsa_user_ports(ds)) | + RTL8366RB_PORT_ISO_EN); + if (ret) + return ret; + + /* Set up the "green ethernet" feature */ + ret = rtl8366rb_jam_table(rtl8366rb_green_jam, + ARRAY_SIZE(rtl8366rb_green_jam), priv, false); + if (ret) + return ret; + + ret = regmap_write(priv->map, + RTL8366RB_GREEN_FEATURE_REG, + (chip_ver == 1) ? 0x0007 : 0x0003); + if (ret) + return ret; + + /* Vendor driver sets 0x240 in registers 0xc and 0xd (undocumented) */ + ret = regmap_write(priv->map, 0x0c, 0x240); + if (ret) + return ret; + ret = regmap_write(priv->map, 0x0d, 0x240); + if (ret) + return ret; + + /* Set some random MAC address */ + ret = rtl8366rb_set_addr(priv); + if (ret) + return ret; + + /* Enable CPU port with custom DSA tag 8899. + * + * If you set RTL8368RB_CPU_NO_TAG (bit 15) in this registers + * the custom tag is turned off. + */ + ret = regmap_update_bits(priv->map, RTL8368RB_CPU_CTRL_REG, + 0xFFFF, + BIT(priv->cpu_port)); + if (ret) + return ret; + + /* Make sure we default-enable the fixed CPU port */ + ret = regmap_update_bits(priv->map, RTL8366RB_PECR, + BIT(priv->cpu_port), + 0); + if (ret) + return ret; + + /* Set maximum packet length to 1536 bytes */ + ret = regmap_update_bits(priv->map, RTL8366RB_SGCR, + RTL8366RB_SGCR_MAX_LENGTH_MASK, + RTL8366RB_SGCR_MAX_LENGTH_1536); + if (ret) + return ret; + for (i = 0; i < RTL8366RB_NUM_PORTS; i++) + /* layer 2 size, see rtl8366rb_change_mtu() */ + rb->max_mtu[i] = 1532; + + /* Disable learning for all ports */ + ret = regmap_write(priv->map, RTL8366RB_PORT_LEARNDIS_CTRL, + RTL8366RB_PORT_ALL); + if (ret) + return ret; + + /* Enable auto ageing for all ports */ + ret = regmap_write(priv->map, RTL8366RB_SECURITY_CTRL, 0); + if (ret) + return ret; + + /* Port 4 setup: this enables Port 4, usually the WAN port, + * common PHY IO mode is apparently mode 0, and this is not what + * the port is initialized to. There is no explanation of the + * IO modes in the Realtek source code, if your WAN port is + * connected to something exotic such as fiber, then this might + * be worth experimenting with. + */ + ret = regmap_update_bits(priv->map, RTL8366RB_PMC0, + RTL8366RB_PMC0_P4_IOMODE_MASK, + 0 << RTL8366RB_PMC0_P4_IOMODE_SHIFT); + if (ret) + return ret; + + /* Accept all packets by default, we enable filtering on-demand */ + ret = regmap_write(priv->map, RTL8366RB_VLAN_INGRESS_CTRL1_REG, + 0); + if (ret) + return ret; + ret = regmap_write(priv->map, RTL8366RB_VLAN_INGRESS_CTRL2_REG, + 0); + if (ret) + return ret; + + /* Don't drop packets whose DA has not been learned */ + ret = regmap_update_bits(priv->map, RTL8366RB_SSCR2, + RTL8366RB_SSCR2_DROP_UNKNOWN_DA, 0); + if (ret) + return ret; + + /* Set blinking, TODO: make this configurable */ + ret = regmap_update_bits(priv->map, RTL8366RB_LED_BLINKRATE_REG, + RTL8366RB_LED_BLINKRATE_MASK, + RTL8366RB_LED_BLINKRATE_56MS); + if (ret) + return ret; + + /* Set up LED activity: + * Each port has 4 LEDs, we configure all ports to the same + * behaviour (no individual config) but we can set up each + * LED separately. + */ + if (priv->leds_disabled) { + /* Turn everything off */ + regmap_update_bits(priv->map, + RTL8366RB_LED_0_1_CTRL_REG, + 0x0FFF, 0); + regmap_update_bits(priv->map, + RTL8366RB_LED_2_3_CTRL_REG, + 0x0FFF, 0); + regmap_update_bits(priv->map, + RTL8366RB_INTERRUPT_CONTROL_REG, + RTL8366RB_P4_RGMII_LED, + 0); + val = RTL8366RB_LED_OFF; + } else { + /* TODO: make this configurable per LED */ + val = RTL8366RB_LED_FORCE; + } + for (i = 0; i < 4; i++) { + ret = regmap_update_bits(priv->map, + RTL8366RB_LED_CTRL_REG, + 0xf << (i * 4), + val << (i * 4)); + if (ret) + return ret; + } + + ret = rtl8366_reset_vlan(priv); + if (ret) + return ret; + + ret = rtl8366rb_setup_cascaded_irq(priv); + if (ret) + dev_info(priv->dev, "no interrupt support\n"); + + if (priv->setup_interface) { + ret = priv->setup_interface(ds); + if (ret) { + dev_err(priv->dev, "could not set up MDIO bus\n"); + return -ENODEV; + } + } + + return 0; +} + +static enum dsa_tag_protocol rtl8366_get_tag_protocol(struct dsa_switch *ds, + int port, + enum dsa_tag_protocol mp) +{ + /* This switch uses the 4 byte protocol A Realtek DSA tag */ + return DSA_TAG_PROTO_RTL4_A; +} + +static void +rtl8366rb_mac_link_up(struct dsa_switch *ds, int port, unsigned int mode, + phy_interface_t interface, struct phy_device *phydev, + int speed, int duplex, bool tx_pause, bool rx_pause) +{ + struct realtek_priv *priv = ds->priv; + int ret; + + if (port != priv->cpu_port) + return; + + dev_dbg(priv->dev, "MAC link up on CPU port (%d)\n", port); + + /* Force the fixed CPU port into 1Gbit mode, no autonegotiation */ + ret = regmap_update_bits(priv->map, RTL8366RB_MAC_FORCE_CTRL_REG, + BIT(port), BIT(port)); + if (ret) { + dev_err(priv->dev, "failed to force 1Gbit on CPU port\n"); + return; + } + + ret = regmap_update_bits(priv->map, RTL8366RB_PAACR2, + 0xFF00U, + RTL8366RB_PAACR_CPU_PORT << 8); + if (ret) { + dev_err(priv->dev, "failed to set PAACR on CPU port\n"); + return; + } + + /* Enable the CPU port */ + ret = regmap_update_bits(priv->map, RTL8366RB_PECR, BIT(port), + 0); + if (ret) { + dev_err(priv->dev, "failed to enable the CPU port\n"); + return; + } +} + +static void +rtl8366rb_mac_link_down(struct dsa_switch *ds, int port, unsigned int mode, + phy_interface_t interface) +{ + struct realtek_priv *priv = ds->priv; + int ret; + + if (port != priv->cpu_port) + return; + + dev_dbg(priv->dev, "MAC link down on CPU port (%d)\n", port); + + /* Disable the CPU port */ + ret = regmap_update_bits(priv->map, RTL8366RB_PECR, BIT(port), + BIT(port)); + if (ret) { + dev_err(priv->dev, "failed to disable the CPU port\n"); + return; + } +} + +static void rb8366rb_set_port_led(struct realtek_priv *priv, + int port, bool enable) +{ + u16 val = enable ? 0x3f : 0; + int ret; + + if (priv->leds_disabled) + return; + + switch (port) { + case 0: + ret = regmap_update_bits(priv->map, + RTL8366RB_LED_0_1_CTRL_REG, + 0x3F, val); + break; + case 1: + ret = regmap_update_bits(priv->map, + RTL8366RB_LED_0_1_CTRL_REG, + 0x3F << RTL8366RB_LED_1_OFFSET, + val << RTL8366RB_LED_1_OFFSET); + break; + case 2: + ret = regmap_update_bits(priv->map, + RTL8366RB_LED_2_3_CTRL_REG, + 0x3F, val); + break; + case 3: + ret = regmap_update_bits(priv->map, + RTL8366RB_LED_2_3_CTRL_REG, + 0x3F << RTL8366RB_LED_3_OFFSET, + val << RTL8366RB_LED_3_OFFSET); + break; + case 4: + ret = regmap_update_bits(priv->map, + RTL8366RB_INTERRUPT_CONTROL_REG, + RTL8366RB_P4_RGMII_LED, + enable ? RTL8366RB_P4_RGMII_LED : 0); + break; + default: + dev_err(priv->dev, "no LED for port %d\n", port); + return; + } + if (ret) + dev_err(priv->dev, "error updating LED on port %d\n", port); +} + +static int +rtl8366rb_port_enable(struct dsa_switch *ds, int port, + struct phy_device *phy) +{ + struct realtek_priv *priv = ds->priv; + int ret; + + dev_dbg(priv->dev, "enable port %d\n", port); + ret = regmap_update_bits(priv->map, RTL8366RB_PECR, BIT(port), + 0); + if (ret) + return ret; + + rb8366rb_set_port_led(priv, port, true); + return 0; +} + +static void +rtl8366rb_port_disable(struct dsa_switch *ds, int port) +{ + struct realtek_priv *priv = ds->priv; + int ret; + + dev_dbg(priv->dev, "disable port %d\n", port); + ret = regmap_update_bits(priv->map, RTL8366RB_PECR, BIT(port), + BIT(port)); + if (ret) + return; + + rb8366rb_set_port_led(priv, port, false); +} + +static int +rtl8366rb_port_bridge_join(struct dsa_switch *ds, int port, + struct dsa_bridge bridge, + bool *tx_fwd_offload, + struct netlink_ext_ack *extack) +{ + struct realtek_priv *priv = ds->priv; + unsigned int port_bitmap = 0; + int ret, i; + + /* Loop over all other ports than the current one */ + for (i = 0; i < RTL8366RB_PORT_NUM_CPU; i++) { + /* Current port handled last */ + if (i == port) + continue; + /* Not on this bridge */ + if (!dsa_port_offloads_bridge(dsa_to_port(ds, i), &bridge)) + continue; + /* Join this port to each other port on the bridge */ + ret = regmap_update_bits(priv->map, RTL8366RB_PORT_ISO(i), + RTL8366RB_PORT_ISO_PORTS(BIT(port)), + RTL8366RB_PORT_ISO_PORTS(BIT(port))); + if (ret) + dev_err(priv->dev, "failed to join port %d\n", port); + + port_bitmap |= BIT(i); + } + + /* Set the bits for the ports we can access */ + return regmap_update_bits(priv->map, RTL8366RB_PORT_ISO(port), + RTL8366RB_PORT_ISO_PORTS(port_bitmap), + RTL8366RB_PORT_ISO_PORTS(port_bitmap)); +} + +static void +rtl8366rb_port_bridge_leave(struct dsa_switch *ds, int port, + struct dsa_bridge bridge) +{ + struct realtek_priv *priv = ds->priv; + unsigned int port_bitmap = 0; + int ret, i; + + /* Loop over all other ports than this one */ + for (i = 0; i < RTL8366RB_PORT_NUM_CPU; i++) { + /* Current port handled last */ + if (i == port) + continue; + /* Not on this bridge */ + if (!dsa_port_offloads_bridge(dsa_to_port(ds, i), &bridge)) + continue; + /* Remove this port from any other port on the bridge */ + ret = regmap_update_bits(priv->map, RTL8366RB_PORT_ISO(i), + RTL8366RB_PORT_ISO_PORTS(BIT(port)), 0); + if (ret) + dev_err(priv->dev, "failed to leave port %d\n", port); + + port_bitmap |= BIT(i); + } + + /* Clear the bits for the ports we can not access, leave ourselves */ + regmap_update_bits(priv->map, RTL8366RB_PORT_ISO(port), + RTL8366RB_PORT_ISO_PORTS(port_bitmap), 0); +} + +/** + * rtl8366rb_drop_untagged() - make the switch drop untagged and C-tagged frames + * @priv: SMI state container + * @port: the port to drop untagged and C-tagged frames on + * @drop: whether to drop or pass untagged and C-tagged frames + * + * Return: zero for success, a negative number on error. + */ +static int rtl8366rb_drop_untagged(struct realtek_priv *priv, int port, bool drop) +{ + return regmap_update_bits(priv->map, RTL8366RB_VLAN_INGRESS_CTRL1_REG, + RTL8366RB_VLAN_INGRESS_CTRL1_DROP(port), + drop ? RTL8366RB_VLAN_INGRESS_CTRL1_DROP(port) : 0); +} + +static int rtl8366rb_vlan_filtering(struct dsa_switch *ds, int port, + bool vlan_filtering, + struct netlink_ext_ack *extack) +{ + struct realtek_priv *priv = ds->priv; + struct rtl8366rb *rb; + int ret; + + rb = priv->chip_data; + + dev_dbg(priv->dev, "port %d: %s VLAN filtering\n", port, + vlan_filtering ? "enable" : "disable"); + + /* If the port is not in the member set, the frame will be dropped */ + ret = regmap_update_bits(priv->map, RTL8366RB_VLAN_INGRESS_CTRL2_REG, + BIT(port), vlan_filtering ? BIT(port) : 0); + if (ret) + return ret; + + /* If VLAN filtering is enabled and PVID is also enabled, we must + * not drop any untagged or C-tagged frames. If we turn off VLAN + * filtering on a port, we need to accept any frames. + */ + if (vlan_filtering) + ret = rtl8366rb_drop_untagged(priv, port, !rb->pvid_enabled[port]); + else + ret = rtl8366rb_drop_untagged(priv, port, false); + + return ret; +} + +static int +rtl8366rb_port_pre_bridge_flags(struct dsa_switch *ds, int port, + struct switchdev_brport_flags flags, + struct netlink_ext_ack *extack) +{ + /* We support enabling/disabling learning */ + if (flags.mask & ~(BR_LEARNING)) + return -EINVAL; + + return 0; +} + +static int +rtl8366rb_port_bridge_flags(struct dsa_switch *ds, int port, + struct switchdev_brport_flags flags, + struct netlink_ext_ack *extack) +{ + struct realtek_priv *priv = ds->priv; + int ret; + + if (flags.mask & BR_LEARNING) { + ret = regmap_update_bits(priv->map, RTL8366RB_PORT_LEARNDIS_CTRL, + BIT(port), + (flags.val & BR_LEARNING) ? 0 : BIT(port)); + if (ret) + return ret; + } + + return 0; +} + +static void +rtl8366rb_port_stp_state_set(struct dsa_switch *ds, int port, u8 state) +{ + struct realtek_priv *priv = ds->priv; + u32 val; + int i; + + switch (state) { + case BR_STATE_DISABLED: + val = RTL8366RB_STP_STATE_DISABLED; + break; + case BR_STATE_BLOCKING: + case BR_STATE_LISTENING: + val = RTL8366RB_STP_STATE_BLOCKING; + break; + case BR_STATE_LEARNING: + val = RTL8366RB_STP_STATE_LEARNING; + break; + case BR_STATE_FORWARDING: + val = RTL8366RB_STP_STATE_FORWARDING; + break; + default: + dev_err(priv->dev, "unknown bridge state requested\n"); + return; + } + + /* Set the same status for the port on all the FIDs */ + for (i = 0; i < RTL8366RB_NUM_FIDS; i++) { + regmap_update_bits(priv->map, RTL8366RB_STP_STATE_BASE + i, + RTL8366RB_STP_STATE_MASK(port), + RTL8366RB_STP_STATE(port, val)); + } +} + +static void +rtl8366rb_port_fast_age(struct dsa_switch *ds, int port) +{ + struct realtek_priv *priv = ds->priv; + + /* This will age out any learned L2 entries */ + regmap_update_bits(priv->map, RTL8366RB_SECURITY_CTRL, + BIT(port), BIT(port)); + /* Restore the normal state of things */ + regmap_update_bits(priv->map, RTL8366RB_SECURITY_CTRL, + BIT(port), 0); +} + +static int rtl8366rb_change_mtu(struct dsa_switch *ds, int port, int new_mtu) +{ + struct realtek_priv *priv = ds->priv; + struct rtl8366rb *rb; + unsigned int max_mtu; + u32 len; + int i; + + /* Cache the per-port MTU setting */ + rb = priv->chip_data; + rb->max_mtu[port] = new_mtu; + + /* Roof out the MTU for the entire switch to the greatest + * common denominator: the biggest set for any one port will + * be the biggest MTU for the switch. + * + * The first setting, 1522 bytes, is max IP packet 1500 bytes, + * plus ethernet header, 1518 bytes, plus CPU tag, 4 bytes. + * This function should consider the parameter an SDU, so the + * MTU passed for this setting is 1518 bytes. The same logic + * of subtracting the DSA tag of 4 bytes apply to the other + * settings. + */ + max_mtu = 1518; + for (i = 0; i < RTL8366RB_NUM_PORTS; i++) { + if (rb->max_mtu[i] > max_mtu) + max_mtu = rb->max_mtu[i]; + } + if (max_mtu <= 1518) + len = RTL8366RB_SGCR_MAX_LENGTH_1522; + else if (max_mtu > 1518 && max_mtu <= 1532) + len = RTL8366RB_SGCR_MAX_LENGTH_1536; + else if (max_mtu > 1532 && max_mtu <= 1548) + len = RTL8366RB_SGCR_MAX_LENGTH_1552; + else + len = RTL8366RB_SGCR_MAX_LENGTH_16000; + + return regmap_update_bits(priv->map, RTL8366RB_SGCR, + RTL8366RB_SGCR_MAX_LENGTH_MASK, + len); +} + +static int rtl8366rb_max_mtu(struct dsa_switch *ds, int port) +{ + /* The max MTU is 16000 bytes, so we subtract the CPU tag + * and the max presented to the system is 15996 bytes. + */ + return 15996; +} + +static int rtl8366rb_get_vlan_4k(struct realtek_priv *priv, u32 vid, + struct rtl8366_vlan_4k *vlan4k) +{ + u32 data[3]; + int ret; + int i; + + memset(vlan4k, '\0', sizeof(struct rtl8366_vlan_4k)); + + if (vid >= RTL8366RB_NUM_VIDS) + return -EINVAL; + + /* write VID */ + ret = regmap_write(priv->map, RTL8366RB_VLAN_TABLE_WRITE_BASE, + vid & RTL8366RB_VLAN_VID_MASK); + if (ret) + return ret; + + /* write table access control word */ + ret = regmap_write(priv->map, RTL8366RB_TABLE_ACCESS_CTRL_REG, + RTL8366RB_TABLE_VLAN_READ_CTRL); + if (ret) + return ret; + + for (i = 0; i < 3; i++) { + ret = regmap_read(priv->map, + RTL8366RB_VLAN_TABLE_READ_BASE + i, + &data[i]); + if (ret) + return ret; + } + + vlan4k->vid = vid; + vlan4k->untag = (data[1] >> RTL8366RB_VLAN_UNTAG_SHIFT) & + RTL8366RB_VLAN_UNTAG_MASK; + vlan4k->member = data[1] & RTL8366RB_VLAN_MEMBER_MASK; + vlan4k->fid = data[2] & RTL8366RB_VLAN_FID_MASK; + + return 0; +} + +static int rtl8366rb_set_vlan_4k(struct realtek_priv *priv, + const struct rtl8366_vlan_4k *vlan4k) +{ + u32 data[3]; + int ret; + int i; + + if (vlan4k->vid >= RTL8366RB_NUM_VIDS || + vlan4k->member > RTL8366RB_VLAN_MEMBER_MASK || + vlan4k->untag > RTL8366RB_VLAN_UNTAG_MASK || + vlan4k->fid > RTL8366RB_FIDMAX) + return -EINVAL; + + data[0] = vlan4k->vid & RTL8366RB_VLAN_VID_MASK; + data[1] = (vlan4k->member & RTL8366RB_VLAN_MEMBER_MASK) | + ((vlan4k->untag & RTL8366RB_VLAN_UNTAG_MASK) << + RTL8366RB_VLAN_UNTAG_SHIFT); + data[2] = vlan4k->fid & RTL8366RB_VLAN_FID_MASK; + + for (i = 0; i < 3; i++) { + ret = regmap_write(priv->map, + RTL8366RB_VLAN_TABLE_WRITE_BASE + i, + data[i]); + if (ret) + return ret; + } + + /* write table access control word */ + ret = regmap_write(priv->map, RTL8366RB_TABLE_ACCESS_CTRL_REG, + RTL8366RB_TABLE_VLAN_WRITE_CTRL); + + return ret; +} + +static int rtl8366rb_get_vlan_mc(struct realtek_priv *priv, u32 index, + struct rtl8366_vlan_mc *vlanmc) +{ + u32 data[3]; + int ret; + int i; + + memset(vlanmc, '\0', sizeof(struct rtl8366_vlan_mc)); + + if (index >= RTL8366RB_NUM_VLANS) + return -EINVAL; + + for (i = 0; i < 3; i++) { + ret = regmap_read(priv->map, + RTL8366RB_VLAN_MC_BASE(index) + i, + &data[i]); + if (ret) + return ret; + } + + vlanmc->vid = data[0] & RTL8366RB_VLAN_VID_MASK; + vlanmc->priority = (data[0] >> RTL8366RB_VLAN_PRIORITY_SHIFT) & + RTL8366RB_VLAN_PRIORITY_MASK; + vlanmc->untag = (data[1] >> RTL8366RB_VLAN_UNTAG_SHIFT) & + RTL8366RB_VLAN_UNTAG_MASK; + vlanmc->member = data[1] & RTL8366RB_VLAN_MEMBER_MASK; + vlanmc->fid = data[2] & RTL8366RB_VLAN_FID_MASK; + + return 0; +} + +static int rtl8366rb_set_vlan_mc(struct realtek_priv *priv, u32 index, + const struct rtl8366_vlan_mc *vlanmc) +{ + u32 data[3]; + int ret; + int i; + + if (index >= RTL8366RB_NUM_VLANS || + vlanmc->vid >= RTL8366RB_NUM_VIDS || + vlanmc->priority > RTL8366RB_PRIORITYMAX || + vlanmc->member > RTL8366RB_VLAN_MEMBER_MASK || + vlanmc->untag > RTL8366RB_VLAN_UNTAG_MASK || + vlanmc->fid > RTL8366RB_FIDMAX) + return -EINVAL; + + data[0] = (vlanmc->vid & RTL8366RB_VLAN_VID_MASK) | + ((vlanmc->priority & RTL8366RB_VLAN_PRIORITY_MASK) << + RTL8366RB_VLAN_PRIORITY_SHIFT); + data[1] = (vlanmc->member & RTL8366RB_VLAN_MEMBER_MASK) | + ((vlanmc->untag & RTL8366RB_VLAN_UNTAG_MASK) << + RTL8366RB_VLAN_UNTAG_SHIFT); + data[2] = vlanmc->fid & RTL8366RB_VLAN_FID_MASK; + + for (i = 0; i < 3; i++) { + ret = regmap_write(priv->map, + RTL8366RB_VLAN_MC_BASE(index) + i, + data[i]); + if (ret) + return ret; + } + + return 0; +} + +static int rtl8366rb_get_mc_index(struct realtek_priv *priv, int port, int *val) +{ + u32 data; + int ret; + + if (port >= priv->num_ports) + return -EINVAL; + + ret = regmap_read(priv->map, RTL8366RB_PORT_VLAN_CTRL_REG(port), + &data); + if (ret) + return ret; + + *val = (data >> RTL8366RB_PORT_VLAN_CTRL_SHIFT(port)) & + RTL8366RB_PORT_VLAN_CTRL_MASK; + + return 0; +} + +static int rtl8366rb_set_mc_index(struct realtek_priv *priv, int port, int index) +{ + struct rtl8366rb *rb; + bool pvid_enabled; + int ret; + + rb = priv->chip_data; + pvid_enabled = !!index; + + if (port >= priv->num_ports || index >= RTL8366RB_NUM_VLANS) + return -EINVAL; + + ret = regmap_update_bits(priv->map, RTL8366RB_PORT_VLAN_CTRL_REG(port), + RTL8366RB_PORT_VLAN_CTRL_MASK << + RTL8366RB_PORT_VLAN_CTRL_SHIFT(port), + (index & RTL8366RB_PORT_VLAN_CTRL_MASK) << + RTL8366RB_PORT_VLAN_CTRL_SHIFT(port)); + if (ret) + return ret; + + rb->pvid_enabled[port] = pvid_enabled; + + /* If VLAN filtering is enabled and PVID is also enabled, we must + * not drop any untagged or C-tagged frames. Make sure to update the + * filtering setting. + */ + if (dsa_port_is_vlan_filtering(dsa_to_port(priv->ds, port))) + ret = rtl8366rb_drop_untagged(priv, port, !pvid_enabled); + + return ret; +} + +static bool rtl8366rb_is_vlan_valid(struct realtek_priv *priv, unsigned int vlan) +{ + unsigned int max = RTL8366RB_NUM_VLANS - 1; + + if (priv->vlan4k_enabled) + max = RTL8366RB_NUM_VIDS - 1; + + if (vlan > max) + return false; + + return true; +} + +static int rtl8366rb_enable_vlan(struct realtek_priv *priv, bool enable) +{ + dev_dbg(priv->dev, "%s VLAN\n", enable ? "enable" : "disable"); + return regmap_update_bits(priv->map, + RTL8366RB_SGCR, RTL8366RB_SGCR_EN_VLAN, + enable ? RTL8366RB_SGCR_EN_VLAN : 0); +} + +static int rtl8366rb_enable_vlan4k(struct realtek_priv *priv, bool enable) +{ + dev_dbg(priv->dev, "%s VLAN 4k\n", enable ? "enable" : "disable"); + return regmap_update_bits(priv->map, RTL8366RB_SGCR, + RTL8366RB_SGCR_EN_VLAN_4KTB, + enable ? RTL8366RB_SGCR_EN_VLAN_4KTB : 0); +} + +static int rtl8366rb_phy_read(struct realtek_priv *priv, int phy, int regnum) +{ + u32 val; + u32 reg; + int ret; + + if (phy > RTL8366RB_PHY_NO_MAX) + return -EINVAL; + + mutex_lock(&priv->map_lock); + + ret = regmap_write(priv->map_nolock, RTL8366RB_PHY_ACCESS_CTRL_REG, + RTL8366RB_PHY_CTRL_READ); + if (ret) + goto out; + + reg = 0x8000 | (1 << (phy + RTL8366RB_PHY_NO_OFFSET)) | regnum; + + ret = regmap_write(priv->map_nolock, reg, 0); + if (ret) { + dev_err(priv->dev, + "failed to write PHY%d reg %04x @ %04x, ret %d\n", + phy, regnum, reg, ret); + goto out; + } + + ret = regmap_read(priv->map_nolock, RTL8366RB_PHY_ACCESS_DATA_REG, + &val); + if (ret) + goto out; + + ret = val; + + dev_dbg(priv->dev, "read PHY%d register 0x%04x @ %08x, val <- %04x\n", + phy, regnum, reg, val); + +out: + mutex_unlock(&priv->map_lock); + + return ret; +} + +static int rtl8366rb_phy_write(struct realtek_priv *priv, int phy, int regnum, + u16 val) +{ + u32 reg; + int ret; + + if (phy > RTL8366RB_PHY_NO_MAX) + return -EINVAL; + + mutex_lock(&priv->map_lock); + + ret = regmap_write(priv->map_nolock, RTL8366RB_PHY_ACCESS_CTRL_REG, + RTL8366RB_PHY_CTRL_WRITE); + if (ret) + goto out; + + reg = 0x8000 | (1 << (phy + RTL8366RB_PHY_NO_OFFSET)) | regnum; + + dev_dbg(priv->dev, "write PHY%d register 0x%04x @ %04x, val -> %04x\n", + phy, regnum, reg, val); + + ret = regmap_write(priv->map_nolock, reg, val); + if (ret) + goto out; + +out: + mutex_unlock(&priv->map_lock); + + return ret; +} + +static int rtl8366rb_dsa_phy_read(struct dsa_switch *ds, int phy, int regnum) +{ + return rtl8366rb_phy_read(ds->priv, phy, regnum); +} + +static int rtl8366rb_dsa_phy_write(struct dsa_switch *ds, int phy, int regnum, + u16 val) +{ + return rtl8366rb_phy_write(ds->priv, phy, regnum, val); +} + +static int rtl8366rb_reset_chip(struct realtek_priv *priv) +{ + int timeout = 10; + u32 val; + int ret; + + priv->write_reg_noack(priv, RTL8366RB_RESET_CTRL_REG, + RTL8366RB_CHIP_CTRL_RESET_HW); + do { + usleep_range(20000, 25000); + ret = regmap_read(priv->map, RTL8366RB_RESET_CTRL_REG, &val); + if (ret) + return ret; + + if (!(val & RTL8366RB_CHIP_CTRL_RESET_HW)) + break; + } while (--timeout); + + if (!timeout) { + dev_err(priv->dev, "timeout waiting for the switch to reset\n"); + return -EIO; + } + + return 0; +} + +static int rtl8366rb_detect(struct realtek_priv *priv) +{ + struct device *dev = priv->dev; + int ret; + u32 val; + + /* Detect device */ + ret = regmap_read(priv->map, 0x5c, &val); + if (ret) { + dev_err(dev, "can't get chip ID (%d)\n", ret); + return ret; + } + + switch (val) { + case 0x6027: + dev_info(dev, "found an RTL8366S switch\n"); + dev_err(dev, "this switch is not yet supported, submit patches!\n"); + return -ENODEV; + case 0x5937: + dev_info(dev, "found an RTL8366RB switch\n"); + priv->cpu_port = RTL8366RB_PORT_NUM_CPU; + priv->num_ports = RTL8366RB_NUM_PORTS; + priv->num_vlan_mc = RTL8366RB_NUM_VLANS; + priv->mib_counters = rtl8366rb_mib_counters; + priv->num_mib_counters = ARRAY_SIZE(rtl8366rb_mib_counters); + break; + default: + dev_info(dev, "found an Unknown Realtek switch (id=0x%04x)\n", + val); + break; + } + + ret = rtl8366rb_reset_chip(priv); + if (ret) + return ret; + + return 0; +} + +static const struct dsa_switch_ops rtl8366rb_switch_ops_smi = { + .get_tag_protocol = rtl8366_get_tag_protocol, + .setup = rtl8366rb_setup, + .phylink_mac_link_up = rtl8366rb_mac_link_up, + .phylink_mac_link_down = rtl8366rb_mac_link_down, + .get_strings = rtl8366_get_strings, + .get_ethtool_stats = rtl8366_get_ethtool_stats, + .get_sset_count = rtl8366_get_sset_count, + .port_bridge_join = rtl8366rb_port_bridge_join, + .port_bridge_leave = rtl8366rb_port_bridge_leave, + .port_vlan_filtering = rtl8366rb_vlan_filtering, + .port_vlan_add = rtl8366_vlan_add, + .port_vlan_del = rtl8366_vlan_del, + .port_enable = rtl8366rb_port_enable, + .port_disable = rtl8366rb_port_disable, + .port_pre_bridge_flags = rtl8366rb_port_pre_bridge_flags, + .port_bridge_flags = rtl8366rb_port_bridge_flags, + .port_stp_state_set = rtl8366rb_port_stp_state_set, + .port_fast_age = rtl8366rb_port_fast_age, + .port_change_mtu = rtl8366rb_change_mtu, + .port_max_mtu = rtl8366rb_max_mtu, +}; + +static const struct dsa_switch_ops rtl8366rb_switch_ops_mdio = { + .get_tag_protocol = rtl8366_get_tag_protocol, + .setup = rtl8366rb_setup, + .phy_read = rtl8366rb_dsa_phy_read, + .phy_write = rtl8366rb_dsa_phy_write, + .phylink_mac_link_up = rtl8366rb_mac_link_up, + .phylink_mac_link_down = rtl8366rb_mac_link_down, + .get_strings = rtl8366_get_strings, + .get_ethtool_stats = rtl8366_get_ethtool_stats, + .get_sset_count = rtl8366_get_sset_count, + .port_bridge_join = rtl8366rb_port_bridge_join, + .port_bridge_leave = rtl8366rb_port_bridge_leave, + .port_vlan_filtering = rtl8366rb_vlan_filtering, + .port_vlan_add = rtl8366_vlan_add, + .port_vlan_del = rtl8366_vlan_del, + .port_enable = rtl8366rb_port_enable, + .port_disable = rtl8366rb_port_disable, + .port_pre_bridge_flags = rtl8366rb_port_pre_bridge_flags, + .port_bridge_flags = rtl8366rb_port_bridge_flags, + .port_stp_state_set = rtl8366rb_port_stp_state_set, + .port_fast_age = rtl8366rb_port_fast_age, + .port_change_mtu = rtl8366rb_change_mtu, + .port_max_mtu = rtl8366rb_max_mtu, +}; + +static const struct realtek_ops rtl8366rb_ops = { + .detect = rtl8366rb_detect, + .get_vlan_mc = rtl8366rb_get_vlan_mc, + .set_vlan_mc = rtl8366rb_set_vlan_mc, + .get_vlan_4k = rtl8366rb_get_vlan_4k, + .set_vlan_4k = rtl8366rb_set_vlan_4k, + .get_mc_index = rtl8366rb_get_mc_index, + .set_mc_index = rtl8366rb_set_mc_index, + .get_mib_counter = rtl8366rb_get_mib_counter, + .is_vlan_valid = rtl8366rb_is_vlan_valid, + .enable_vlan = rtl8366rb_enable_vlan, + .enable_vlan4k = rtl8366rb_enable_vlan4k, + .phy_read = rtl8366rb_phy_read, + .phy_write = rtl8366rb_phy_write, +}; + +const struct realtek_variant rtl8366rb_variant = { + .ds_ops_smi = &rtl8366rb_switch_ops_smi, + .ds_ops_mdio = &rtl8366rb_switch_ops_mdio, + .ops = &rtl8366rb_ops, + .clk_delay = 10, + .cmd_read = 0xa9, + .cmd_write = 0xa8, + .chip_data_sz = sizeof(struct rtl8366rb), +}; +EXPORT_SYMBOL_GPL(rtl8366rb_variant); + +MODULE_AUTHOR("Linus Walleij <linus.walleij@linaro.org>"); +MODULE_DESCRIPTION("Driver for RTL8366RB ethernet switch"); +MODULE_LICENSE("GPL"); |