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ksz_common.h
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ksz_common.h
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/* SPDX-License-Identifier: GPL-2.0 */ /* Microchip switch driver common header * * Copyright (C) 2017-2019 Microchip Technology Inc. */ #ifndef __KSZ_COMMON_H #define __KSZ_COMMON_H #include <linux/etherdevice.h> #include <linux/kernel.h> #include <linux/mutex.h> #include <linux/phy.h> #include <linux/regmap.h> #include <net/dsa.h> struct vlan_table { u32 table[3]; }; struct ksz_port_mib { struct mutex cnt_mutex; /* structure access */ u8 cnt_ptr; u64 *counters; }; struct ksz_port { u16 member; u16 vid_member; int stp_state; struct phy_device phydev; u32 on:1; /* port is not disabled by hardware */ u32 phy:1; /* port has a PHY */ u32 fiber:1; /* port is fiber */ u32 sgmii:1; /* port is SGMII */ u32 force:1; u32 read:1; /* read MIB counters in background */ u32 freeze:1; /* MIB counter freeze is enabled */ struct ksz_port_mib mib; }; struct ksz_device { struct dsa_switch *ds; struct ksz_platform_data *pdata; const char *name; struct mutex dev_mutex; /* device access */ struct mutex regmap_mutex; /* regmap access */ struct mutex alu_mutex; /* ALU access */ struct mutex vlan_mutex; /* vlan access */ const struct ksz_dev_ops *dev_ops; struct device *dev; struct regmap *regmap[3]; void *priv; struct gpio_desc *reset_gpio; /* Optional reset GPIO */ /* chip specific data */ u32 chip_id; int num_vlans; int num_alus; int num_statics; int cpu_port; /* port connected to CPU */ int cpu_ports; /* port bitmap can be cpu port */ int phy_port_cnt; int port_cnt; int reg_mib_cnt; int mib_cnt; int mib_port_cnt; int last_port; /* ports after that not used */ phy_interface_t interface; u32 regs_size; bool phy_errata_9477; bool synclko_125; struct vlan_table *vlan_cache; struct ksz_port *ports; struct timer_list mib_read_timer; struct work_struct mib_read; unsigned long mib_read_interval; u16 br_member; u16 member; u16 live_ports; u16 on_ports; /* ports enabled by DSA */ u16 rx_ports; u16 tx_ports; u16 mirror_rx; u16 mirror_tx; u32 features; /* chip specific features */ u32 overrides; /* chip functions set by user */ u16 host_mask; u16 port_mask; }; struct alu_struct { /* entry 1 */ u8 is_static:1; u8 is_src_filter:1; u8 is_dst_filter:1; u8 prio_age:3; u32 _reserv_0_1:23; u8 mstp:3; /* entry 2 */ u8 is_override:1; u8 is_use_fid:1; u32 _reserv_1_1:23; u8 port_forward:7; /* entry 3 & 4*/ u32 _reserv_2_1:9; u8 fid:7; u8 mac[ETH_ALEN]; }; struct ksz_dev_ops { u32 (*get_port_addr)(int port, int offset); void (*cfg_port_member)(struct ksz_device *dev, int port, u8 member); void (*flush_dyn_mac_table)(struct ksz_device *dev, int port); void (*phy_setup)(struct ksz_device *dev, int port, struct phy_device *phy); void (*port_cleanup)(struct ksz_device *dev, int port); void (*port_setup)(struct ksz_device *dev, int port, bool cpu_port); void (*r_phy)(struct ksz_device *dev, u16 phy, u16 reg, u16 *val); void (*w_phy)(struct ksz_device *dev, u16 phy, u16 reg, u16 val); int (*r_dyn_mac_table)(struct ksz_device *dev, u16 addr, u8 *mac_addr, u8 *fid, u8 *src_port, u8 *timestamp, u16 *entries); int (*r_sta_mac_table)(struct ksz_device *dev, u16 addr, struct alu_struct *alu); void (*w_sta_mac_table)(struct ksz_device *dev, u16 addr, struct alu_struct *alu); void (*r_mib_cnt)(struct ksz_device *dev, int port, u16 addr, u64 *cnt); void (*r_mib_pkt)(struct ksz_device *dev, int port, u16 addr, u64 *dropped, u64 *cnt); void (*freeze_mib)(struct ksz_device *dev, int port, bool freeze); void (*port_init_cnt)(struct ksz_device *dev, int port); int (*shutdown)(struct ksz_device *dev); int (*detect)(struct ksz_device *dev); int (*init)(struct ksz_device *dev); void (*exit)(struct ksz_device *dev); }; struct ksz_device *ksz_switch_alloc(struct device *base, void *priv); int ksz_switch_register(struct ksz_device *dev, const struct ksz_dev_ops *ops); void ksz_switch_remove(struct ksz_device *dev); int ksz8795_switch_register(struct ksz_device *dev); int ksz9477_switch_register(struct ksz_device *dev); void ksz_update_port_member(struct ksz_device *dev, int port); void ksz_init_mib_timer(struct ksz_device *dev); /* Common DSA access functions */ int ksz_phy_read16(struct dsa_switch *ds, int addr, int reg); int ksz_phy_write16(struct dsa_switch *ds, int addr, int reg, u16 val); void ksz_adjust_link(struct dsa_switch *ds, int port, struct phy_device *phydev); int ksz_sset_count(struct dsa_switch *ds, int port, int sset); void ksz_get_ethtool_stats(struct dsa_switch *ds, int port, uint64_t *buf); int ksz_port_bridge_join(struct dsa_switch *ds, int port, struct net_device *br); void ksz_port_bridge_leave(struct dsa_switch *ds, int port, struct net_device *br); void ksz_port_fast_age(struct dsa_switch *ds, int port); int ksz_port_vlan_prepare(struct dsa_switch *ds, int port, const struct switchdev_obj_port_vlan *vlan); int ksz_port_fdb_dump(struct dsa_switch *ds, int port, dsa_fdb_dump_cb_t *cb, void *data); int ksz_port_mdb_prepare(struct dsa_switch *ds, int port, const struct switchdev_obj_port_mdb *mdb); void ksz_port_mdb_add(struct dsa_switch *ds, int port, const struct switchdev_obj_port_mdb *mdb); int ksz_port_mdb_del(struct dsa_switch *ds, int port, const struct switchdev_obj_port_mdb *mdb); int ksz_enable_port(struct dsa_switch *ds, int port, struct phy_device *phy); void ksz_disable_port(struct dsa_switch *ds, int port); /* Common register access functions */ static inline int ksz_read8(struct ksz_device *dev, u32 reg, u8 *val) { unsigned int value; int ret = regmap_read(dev->regmap[0], reg, &value); *val = value; return ret; } static inline int ksz_read16(struct ksz_device *dev, u32 reg, u16 *val) { unsigned int value; int ret = regmap_read(dev->regmap[1], reg, &value); *val = value; return ret; } static inline int ksz_read32(struct ksz_device *dev, u32 reg, u32 *val) { unsigned int value; int ret = regmap_read(dev->regmap[2], reg, &value); *val = value; return ret; } static inline int ksz_read64(struct ksz_device *dev, u32 reg, u64 *val) { u32 value[2]; int ret; ret = regmap_bulk_read(dev->regmap[2], reg, value, 2); if (!ret) { /* Ick! ToDo: Add 64bit R/W to regmap on 32bit systems */ value[0] = swab32(value[0]); value[1] = swab32(value[1]); *val = swab64((u64)*value); } return ret; } static inline int ksz_write8(struct ksz_device *dev, u32 reg, u8 value) { return regmap_write(dev->regmap[0], reg, value); } static inline int ksz_write16(struct ksz_device *dev, u32 reg, u16 value) { return regmap_write(dev->regmap[1], reg, value); } static inline int ksz_write32(struct ksz_device *dev, u32 reg, u32 value) { return regmap_write(dev->regmap[2], reg, value); } static inline int ksz_write64(struct ksz_device *dev, u32 reg, u64 value) { u32 val[2]; /* Ick! ToDo: Add 64bit R/W to regmap on 32bit systems */ value = swab64(value); val[0] = swab32(value & 0xffffffffULL); val[1] = swab32(value >> 32ULL); return regmap_bulk_write(dev->regmap[2], reg, val, 2); } static inline void ksz_pread8(struct ksz_device *dev, int port, int offset, u8 *data) { ksz_read8(dev, dev->dev_ops->get_port_addr(port, offset), data); } static inline void ksz_pread16(struct ksz_device *dev, int port, int offset, u16 *data) { ksz_read16(dev, dev->dev_ops->get_port_addr(port, offset), data); } static inline void ksz_pread32(struct ksz_device *dev, int port, int offset, u32 *data) { ksz_read32(dev, dev->dev_ops->get_port_addr(port, offset), data); } static inline void ksz_pwrite8(struct ksz_device *dev, int port, int offset, u8 data) { ksz_write8(dev, dev->dev_ops->get_port_addr(port, offset), data); } static inline void ksz_pwrite16(struct ksz_device *dev, int port, int offset, u16 data) { ksz_write16(dev, dev->dev_ops->get_port_addr(port, offset), data); } static inline void ksz_pwrite32(struct ksz_device *dev, int port, int offset, u32 data) { ksz_write32(dev, dev->dev_ops->get_port_addr(port, offset), data); } static inline void ksz_regmap_lock(void *__mtx) { struct mutex *mtx = __mtx; mutex_lock(mtx); } static inline void ksz_regmap_unlock(void *__mtx) { struct mutex *mtx = __mtx; mutex_unlock(mtx); } /* Regmap tables generation */ #define KSZ_SPI_OP_RD 3 #define KSZ_SPI_OP_WR 2 #define swabnot_used(x) 0 #define KSZ_SPI_OP_FLAG_MASK(opcode, swp, regbits, regpad) \ swab##swp((opcode) << ((regbits) + (regpad))) #define KSZ_REGMAP_ENTRY(width, swp, regbits, regpad, regalign) \ { \ .name = #width, \ .val_bits = (width), \ .reg_stride = 1, \ .reg_bits = (regbits) + (regalign), \ .pad_bits = (regpad), \ .max_register = BIT(regbits) - 1, \ .cache_type = REGCACHE_NONE, \ .read_flag_mask = \ KSZ_SPI_OP_FLAG_MASK(KSZ_SPI_OP_RD, swp, \ regbits, regpad), \ .write_flag_mask = \ KSZ_SPI_OP_FLAG_MASK(KSZ_SPI_OP_WR, swp, \ regbits, regpad), \ .lock = ksz_regmap_lock, \ .unlock = ksz_regmap_unlock, \ .reg_format_endian = REGMAP_ENDIAN_BIG, \ .val_format_endian = REGMAP_ENDIAN_BIG \ } #define KSZ_REGMAP_TABLE(ksz, swp, regbits, regpad, regalign) \ static const struct regmap_config ksz##_regmap_config[] = { \ KSZ_REGMAP_ENTRY(8, swp, (regbits), (regpad), (regalign)), \ KSZ_REGMAP_ENTRY(16, swp, (regbits), (regpad), (regalign)), \ KSZ_REGMAP_ENTRY(32, swp, (regbits), (regpad), (regalign)), \ } #endif
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