1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Microchip switch driver common header
4 * Copyright (C) 2017-2019 Microchip Technology Inc.
10 #include <linux/etherdevice.h>
11 #include <linux/kernel.h>
12 #include <linux/mutex.h>
13 #include <linux/phy.h>
14 #include <linux/regmap.h>
22 struct mutex cnt_mutex; /* structure access */
25 struct rtnl_link_stats64 stats64;
26 struct spinlock stats64_lock;
30 bool remove_tag; /* Remove Tag flag set, for ksz8795 only */
32 struct phy_device phydev;
34 u32 on:1; /* port is not disabled by hardware */
35 u32 phy:1; /* port has a PHY */
36 u32 fiber:1; /* port is fiber */
37 u32 sgmii:1; /* port is SGMII */
39 u32 read:1; /* read MIB counters in background */
40 u32 freeze:1; /* MIB counter freeze is enabled */
42 struct ksz_port_mib mib;
43 phy_interface_t interface;
48 struct dsa_switch *ds;
49 struct ksz_platform_data *pdata;
52 struct mutex dev_mutex; /* device access */
53 struct mutex regmap_mutex; /* regmap access */
54 struct mutex alu_mutex; /* ALU access */
55 struct mutex vlan_mutex; /* vlan access */
56 const struct ksz_dev_ops *dev_ops;
59 struct regmap *regmap[3];
63 struct gpio_desc *reset_gpio; /* Optional reset GPIO */
65 /* chip specific data */
70 int cpu_port; /* port connected to CPU */
71 int cpu_ports; /* port bitmap can be cpu port */
76 const struct mib_names *mib_names;
77 phy_interface_t compat_interface;
80 bool ksz87xx_eee_link_erratum;
84 struct vlan_table *vlan_cache;
86 struct ksz_port *ports;
87 struct delayed_work mib_read;
88 unsigned long mib_read_interval;
91 u32 features; /* chip specific features */
92 u32 overrides; /* chip functions set by user */
117 u32 (*get_port_addr)(int port, int offset);
118 void (*cfg_port_member)(struct ksz_device *dev, int port, u8 member);
119 void (*flush_dyn_mac_table)(struct ksz_device *dev, int port);
120 void (*port_cleanup)(struct ksz_device *dev, int port);
121 void (*port_setup)(struct ksz_device *dev, int port, bool cpu_port);
122 void (*r_phy)(struct ksz_device *dev, u16 phy, u16 reg, u16 *val);
123 void (*w_phy)(struct ksz_device *dev, u16 phy, u16 reg, u16 val);
124 int (*r_dyn_mac_table)(struct ksz_device *dev, u16 addr, u8 *mac_addr,
125 u8 *fid, u8 *src_port, u8 *timestamp,
127 int (*r_sta_mac_table)(struct ksz_device *dev, u16 addr,
128 struct alu_struct *alu);
129 void (*w_sta_mac_table)(struct ksz_device *dev, u16 addr,
130 struct alu_struct *alu);
131 void (*r_mib_cnt)(struct ksz_device *dev, int port, u16 addr,
133 void (*r_mib_pkt)(struct ksz_device *dev, int port, u16 addr,
134 u64 *dropped, u64 *cnt);
135 void (*r_mib_stat64)(struct ksz_device *dev, int port);
136 void (*freeze_mib)(struct ksz_device *dev, int port, bool freeze);
137 void (*port_init_cnt)(struct ksz_device *dev, int port);
138 int (*shutdown)(struct ksz_device *dev);
139 int (*detect)(struct ksz_device *dev);
140 int (*init)(struct ksz_device *dev);
141 void (*exit)(struct ksz_device *dev);
144 struct ksz_device *ksz_switch_alloc(struct device *base, void *priv);
145 int ksz_switch_register(struct ksz_device *dev,
146 const struct ksz_dev_ops *ops);
147 void ksz_switch_remove(struct ksz_device *dev);
149 int ksz8_switch_register(struct ksz_device *dev);
150 int ksz9477_switch_register(struct ksz_device *dev);
152 void ksz_update_port_member(struct ksz_device *dev, int port);
153 void ksz_init_mib_timer(struct ksz_device *dev);
155 /* Common DSA access functions */
157 int ksz_phy_read16(struct dsa_switch *ds, int addr, int reg);
158 int ksz_phy_write16(struct dsa_switch *ds, int addr, int reg, u16 val);
159 void ksz_mac_link_down(struct dsa_switch *ds, int port, unsigned int mode,
160 phy_interface_t interface);
161 int ksz_sset_count(struct dsa_switch *ds, int port, int sset);
162 void ksz_get_ethtool_stats(struct dsa_switch *ds, int port, uint64_t *buf);
163 int ksz_port_bridge_join(struct dsa_switch *ds, int port,
164 struct dsa_bridge bridge, bool *tx_fwd_offload,
165 struct netlink_ext_ack *extack);
166 void ksz_port_bridge_leave(struct dsa_switch *ds, int port,
167 struct dsa_bridge bridge);
168 void ksz_port_fast_age(struct dsa_switch *ds, int port);
169 int ksz_port_fdb_dump(struct dsa_switch *ds, int port, dsa_fdb_dump_cb_t *cb,
171 int ksz_port_mdb_add(struct dsa_switch *ds, int port,
172 const struct switchdev_obj_port_mdb *mdb,
174 int ksz_port_mdb_del(struct dsa_switch *ds, int port,
175 const struct switchdev_obj_port_mdb *mdb,
177 int ksz_enable_port(struct dsa_switch *ds, int port, struct phy_device *phy);
179 /* Common register access functions */
181 static inline int ksz_read8(struct ksz_device *dev, u32 reg, u8 *val)
184 int ret = regmap_read(dev->regmap[0], reg, &value);
190 static inline int ksz_read16(struct ksz_device *dev, u32 reg, u16 *val)
193 int ret = regmap_read(dev->regmap[1], reg, &value);
199 static inline int ksz_read32(struct ksz_device *dev, u32 reg, u32 *val)
202 int ret = regmap_read(dev->regmap[2], reg, &value);
208 static inline int ksz_read64(struct ksz_device *dev, u32 reg, u64 *val)
213 ret = regmap_bulk_read(dev->regmap[2], reg, value, 2);
215 *val = (u64)value[0] << 32 | value[1];
220 static inline int ksz_write8(struct ksz_device *dev, u32 reg, u8 value)
222 return regmap_write(dev->regmap[0], reg, value);
225 static inline int ksz_write16(struct ksz_device *dev, u32 reg, u16 value)
227 return regmap_write(dev->regmap[1], reg, value);
230 static inline int ksz_write32(struct ksz_device *dev, u32 reg, u32 value)
232 return regmap_write(dev->regmap[2], reg, value);
235 static inline int ksz_write64(struct ksz_device *dev, u32 reg, u64 value)
239 /* Ick! ToDo: Add 64bit R/W to regmap on 32bit systems */
240 value = swab64(value);
241 val[0] = swab32(value & 0xffffffffULL);
242 val[1] = swab32(value >> 32ULL);
244 return regmap_bulk_write(dev->regmap[2], reg, val, 2);
247 static inline void ksz_pread8(struct ksz_device *dev, int port, int offset,
250 ksz_read8(dev, dev->dev_ops->get_port_addr(port, offset), data);
253 static inline void ksz_pread16(struct ksz_device *dev, int port, int offset,
256 ksz_read16(dev, dev->dev_ops->get_port_addr(port, offset), data);
259 static inline void ksz_pread32(struct ksz_device *dev, int port, int offset,
262 ksz_read32(dev, dev->dev_ops->get_port_addr(port, offset), data);
265 static inline void ksz_pwrite8(struct ksz_device *dev, int port, int offset,
268 ksz_write8(dev, dev->dev_ops->get_port_addr(port, offset), data);
271 static inline void ksz_pwrite16(struct ksz_device *dev, int port, int offset,
274 ksz_write16(dev, dev->dev_ops->get_port_addr(port, offset), data);
277 static inline void ksz_pwrite32(struct ksz_device *dev, int port, int offset,
280 ksz_write32(dev, dev->dev_ops->get_port_addr(port, offset), data);
283 static inline void ksz_regmap_lock(void *__mtx)
285 struct mutex *mtx = __mtx;
289 static inline void ksz_regmap_unlock(void *__mtx)
291 struct mutex *mtx = __mtx;
295 /* Regmap tables generation */
296 #define KSZ_SPI_OP_RD 3
297 #define KSZ_SPI_OP_WR 2
299 #define swabnot_used(x) 0
301 #define KSZ_SPI_OP_FLAG_MASK(opcode, swp, regbits, regpad) \
302 swab##swp((opcode) << ((regbits) + (regpad)))
304 #define KSZ_REGMAP_ENTRY(width, swp, regbits, regpad, regalign) \
307 .val_bits = (width), \
309 .reg_bits = (regbits) + (regalign), \
310 .pad_bits = (regpad), \
311 .max_register = BIT(regbits) - 1, \
312 .cache_type = REGCACHE_NONE, \
314 KSZ_SPI_OP_FLAG_MASK(KSZ_SPI_OP_RD, swp, \
317 KSZ_SPI_OP_FLAG_MASK(KSZ_SPI_OP_WR, swp, \
319 .lock = ksz_regmap_lock, \
320 .unlock = ksz_regmap_unlock, \
321 .reg_format_endian = REGMAP_ENDIAN_BIG, \
322 .val_format_endian = REGMAP_ENDIAN_BIG \
325 #define KSZ_REGMAP_TABLE(ksz, swp, regbits, regpad, regalign) \
326 static const struct regmap_config ksz##_regmap_config[] = { \
327 KSZ_REGMAP_ENTRY(8, swp, (regbits), (regpad), (regalign)), \
328 KSZ_REGMAP_ENTRY(16, swp, (regbits), (regpad), (regalign)), \
329 KSZ_REGMAP_ENTRY(32, swp, (regbits), (regpad), (regalign)), \