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 */
28 bool remove_tag; /* Remove Tag flag set, for ksz8795 only */
30 struct phy_device phydev;
32 u32 on:1; /* port is not disabled by hardware */
33 u32 phy:1; /* port has a PHY */
34 u32 fiber:1; /* port is fiber */
35 u32 sgmii:1; /* port is SGMII */
37 u32 read:1; /* read MIB counters in background */
38 u32 freeze:1; /* MIB counter freeze is enabled */
40 struct ksz_port_mib mib;
41 phy_interface_t interface;
45 struct dsa_switch *ds;
46 struct ksz_platform_data *pdata;
49 struct mutex dev_mutex; /* device access */
50 struct mutex regmap_mutex; /* regmap access */
51 struct mutex alu_mutex; /* ALU access */
52 struct mutex vlan_mutex; /* vlan access */
53 const struct ksz_dev_ops *dev_ops;
56 struct regmap *regmap[3];
60 struct gpio_desc *reset_gpio; /* Optional reset GPIO */
62 /* chip specific data */
67 int cpu_port; /* port connected to CPU */
68 int cpu_ports; /* port bitmap can be cpu port */
73 const struct mib_names *mib_names;
74 phy_interface_t compat_interface;
79 struct vlan_table *vlan_cache;
81 struct ksz_port *ports;
82 struct delayed_work mib_read;
83 unsigned long mib_read_interval;
86 u32 features; /* chip specific features */
87 u32 overrides; /* chip functions set by user */
112 u32 (*get_port_addr)(int port, int offset);
113 void (*cfg_port_member)(struct ksz_device *dev, int port, u8 member);
114 void (*flush_dyn_mac_table)(struct ksz_device *dev, int port);
115 void (*port_cleanup)(struct ksz_device *dev, int port);
116 void (*port_setup)(struct ksz_device *dev, int port, bool cpu_port);
117 void (*r_phy)(struct ksz_device *dev, u16 phy, u16 reg, u16 *val);
118 void (*w_phy)(struct ksz_device *dev, u16 phy, u16 reg, u16 val);
119 int (*r_dyn_mac_table)(struct ksz_device *dev, u16 addr, u8 *mac_addr,
120 u8 *fid, u8 *src_port, u8 *timestamp,
122 int (*r_sta_mac_table)(struct ksz_device *dev, u16 addr,
123 struct alu_struct *alu);
124 void (*w_sta_mac_table)(struct ksz_device *dev, u16 addr,
125 struct alu_struct *alu);
126 void (*r_mib_cnt)(struct ksz_device *dev, int port, u16 addr,
128 void (*r_mib_pkt)(struct ksz_device *dev, int port, u16 addr,
129 u64 *dropped, u64 *cnt);
130 void (*freeze_mib)(struct ksz_device *dev, int port, bool freeze);
131 void (*port_init_cnt)(struct ksz_device *dev, int port);
132 int (*shutdown)(struct ksz_device *dev);
133 int (*detect)(struct ksz_device *dev);
134 int (*init)(struct ksz_device *dev);
135 void (*exit)(struct ksz_device *dev);
138 struct ksz_device *ksz_switch_alloc(struct device *base, void *priv);
139 int ksz_switch_register(struct ksz_device *dev,
140 const struct ksz_dev_ops *ops);
141 void ksz_switch_remove(struct ksz_device *dev);
143 int ksz8_switch_register(struct ksz_device *dev);
144 int ksz9477_switch_register(struct ksz_device *dev);
146 void ksz_update_port_member(struct ksz_device *dev, int port);
147 void ksz_init_mib_timer(struct ksz_device *dev);
149 /* Common DSA access functions */
151 int ksz_phy_read16(struct dsa_switch *ds, int addr, int reg);
152 int ksz_phy_write16(struct dsa_switch *ds, int addr, int reg, u16 val);
153 void ksz_mac_link_down(struct dsa_switch *ds, int port, unsigned int mode,
154 phy_interface_t interface);
155 int ksz_sset_count(struct dsa_switch *ds, int port, int sset);
156 void ksz_get_ethtool_stats(struct dsa_switch *ds, int port, uint64_t *buf);
157 int ksz_port_bridge_join(struct dsa_switch *ds, int port,
158 struct net_device *br);
159 void ksz_port_bridge_leave(struct dsa_switch *ds, int port,
160 struct net_device *br);
161 void ksz_port_fast_age(struct dsa_switch *ds, int port);
162 int ksz_port_fdb_dump(struct dsa_switch *ds, int port, dsa_fdb_dump_cb_t *cb,
164 int ksz_port_mdb_add(struct dsa_switch *ds, int port,
165 const struct switchdev_obj_port_mdb *mdb);
166 int ksz_port_mdb_del(struct dsa_switch *ds, int port,
167 const struct switchdev_obj_port_mdb *mdb);
168 int ksz_enable_port(struct dsa_switch *ds, int port, struct phy_device *phy);
170 /* Common register access functions */
172 static inline int ksz_read8(struct ksz_device *dev, u32 reg, u8 *val)
175 int ret = regmap_read(dev->regmap[0], reg, &value);
181 static inline int ksz_read16(struct ksz_device *dev, u32 reg, u16 *val)
184 int ret = regmap_read(dev->regmap[1], reg, &value);
190 static inline int ksz_read32(struct ksz_device *dev, u32 reg, u32 *val)
193 int ret = regmap_read(dev->regmap[2], reg, &value);
199 static inline int ksz_read64(struct ksz_device *dev, u32 reg, u64 *val)
204 ret = regmap_bulk_read(dev->regmap[2], reg, value, 2);
206 *val = (u64)value[0] << 32 | value[1];
211 static inline int ksz_write8(struct ksz_device *dev, u32 reg, u8 value)
213 return regmap_write(dev->regmap[0], reg, value);
216 static inline int ksz_write16(struct ksz_device *dev, u32 reg, u16 value)
218 return regmap_write(dev->regmap[1], reg, value);
221 static inline int ksz_write32(struct ksz_device *dev, u32 reg, u32 value)
223 return regmap_write(dev->regmap[2], reg, value);
226 static inline int ksz_write64(struct ksz_device *dev, u32 reg, u64 value)
230 /* Ick! ToDo: Add 64bit R/W to regmap on 32bit systems */
231 value = swab64(value);
232 val[0] = swab32(value & 0xffffffffULL);
233 val[1] = swab32(value >> 32ULL);
235 return regmap_bulk_write(dev->regmap[2], reg, val, 2);
238 static inline void ksz_pread8(struct ksz_device *dev, int port, int offset,
241 ksz_read8(dev, dev->dev_ops->get_port_addr(port, offset), data);
244 static inline void ksz_pread16(struct ksz_device *dev, int port, int offset,
247 ksz_read16(dev, dev->dev_ops->get_port_addr(port, offset), data);
250 static inline void ksz_pread32(struct ksz_device *dev, int port, int offset,
253 ksz_read32(dev, dev->dev_ops->get_port_addr(port, offset), data);
256 static inline void ksz_pwrite8(struct ksz_device *dev, int port, int offset,
259 ksz_write8(dev, dev->dev_ops->get_port_addr(port, offset), data);
262 static inline void ksz_pwrite16(struct ksz_device *dev, int port, int offset,
265 ksz_write16(dev, dev->dev_ops->get_port_addr(port, offset), data);
268 static inline void ksz_pwrite32(struct ksz_device *dev, int port, int offset,
271 ksz_write32(dev, dev->dev_ops->get_port_addr(port, offset), data);
274 static inline void ksz_regmap_lock(void *__mtx)
276 struct mutex *mtx = __mtx;
280 static inline void ksz_regmap_unlock(void *__mtx)
282 struct mutex *mtx = __mtx;
286 /* Regmap tables generation */
287 #define KSZ_SPI_OP_RD 3
288 #define KSZ_SPI_OP_WR 2
290 #define swabnot_used(x) 0
292 #define KSZ_SPI_OP_FLAG_MASK(opcode, swp, regbits, regpad) \
293 swab##swp((opcode) << ((regbits) + (regpad)))
295 #define KSZ_REGMAP_ENTRY(width, swp, regbits, regpad, regalign) \
298 .val_bits = (width), \
300 .reg_bits = (regbits) + (regalign), \
301 .pad_bits = (regpad), \
302 .max_register = BIT(regbits) - 1, \
303 .cache_type = REGCACHE_NONE, \
305 KSZ_SPI_OP_FLAG_MASK(KSZ_SPI_OP_RD, swp, \
308 KSZ_SPI_OP_FLAG_MASK(KSZ_SPI_OP_WR, swp, \
310 .lock = ksz_regmap_lock, \
311 .unlock = ksz_regmap_unlock, \
312 .reg_format_endian = REGMAP_ENDIAN_BIG, \
313 .val_format_endian = REGMAP_ENDIAN_BIG \
316 #define KSZ_REGMAP_TABLE(ksz, swp, regbits, regpad, regalign) \
317 static const struct regmap_config ksz##_regmap_config[] = { \
318 KSZ_REGMAP_ENTRY(8, swp, (regbits), (regpad), (regalign)), \
319 KSZ_REGMAP_ENTRY(16, swp, (regbits), (regpad), (regalign)), \
320 KSZ_REGMAP_ENTRY(32, swp, (regbits), (regpad), (regalign)), \