| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Alvin Šipraga | 7303 | 86.23% | 8 | 30.77% |
| Luiz Angelo Daros de Luca | 754 | 8.90% | 13 | 50.00% |
| Linus Walleij | 379 | 4.48% | 1 | 3.85% |
| Russell King | 17 | 0.20% | 1 | 3.85% |
| Vladimir Oltean | 10 | 0.12% | 1 | 3.85% |
| Randy Dunlap | 5 | 0.06% | 1 | 3.85% |
| Johan Hovold | 1 | 0.01% | 1 | 3.85% |
| Total | 8469 | 26 |
// 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 <linux/if_vlan.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 #define RTL8365MB_CFG0_MAX_LEN_MAX 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 int rtl8365mb_port_change_mtu(struct dsa_switch *ds, int port, int new_mtu) { struct realtek_priv *priv = ds->priv; int frame_size; /* When a new MTU is set, DSA always sets the CPU port's MTU to the * largest MTU of the slave ports. Because the switch only has a global * RX length register, only allowing CPU port here is enough. */ if (!dsa_is_cpu_port(ds, port)) return 0; frame_size = new_mtu + VLAN_ETH_HLEN + ETH_FCS_LEN; dev_dbg(priv->dev, "changing mtu to %d (frame size: %d)\n", new_mtu, frame_size); return regmap_update_bits(priv->map, RTL8365MB_CFG0_MAX_LEN_REG, RTL8365MB_CFG0_MAX_LEN_MASK, FIELD_PREP(RTL8365MB_CFG0_MAX_LEN_MASK, frame_size)); } static int rtl8365mb_port_max_mtu(struct dsa_switch *ds, int port) { return RTL8365MB_CFG0_MAX_LEN_MAX - VLAN_ETH_HLEN - ETH_FCS_LEN; } 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; } ret = rtl8365mb_port_change_mtu(ds, cpu->trap_port, ETH_DATA_LEN); 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, .port_change_mtu = rtl8365mb_port_change_mtu, .port_max_mtu = rtl8365mb_port_max_mtu, }; 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, .port_change_mtu = rtl8365mb_port_change_mtu, .port_max_mtu = rtl8365mb_port_max_mtu, }; 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");
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