1/* SPDX-License-Identifier: GPL-2.0 */ 2/* Microchip switch driver common header 3 * 4 * Copyright (C) 2017-2019 Microchip Technology Inc. 5 */ 6 7#ifndef __KSZ_COMMON_H 8#define __KSZ_COMMON_H 9 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> 15#include <net/dsa.h> 16 17struct vlan_table { 18 u32 table[3]; 19}; 20 21struct ksz_port_mib { 22 struct mutex cnt_mutex; /* structure access */ 23 u8 cnt_ptr; 24 u64 *counters; 25}; 26 27struct ksz_port { 28 u16 member; 29 u16 vid_member; 30 bool remove_tag; /* Remove Tag flag set, for ksz8795 only */ 31 int stp_state; 32 struct phy_device phydev; 33 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 */ 38 u32 force:1; 39 u32 read:1; /* read MIB counters in background */ 40 u32 freeze:1; /* MIB counter freeze is enabled */ 41 42 struct ksz_port_mib mib; 43 phy_interface_t interface; 44}; 45 46struct ksz_device { 47 struct dsa_switch *ds; 48 struct ksz_platform_data *pdata; 49 const char *name; 50 51 struct mutex dev_mutex; /* device access */ 52 struct mutex regmap_mutex; /* regmap access */ 53 struct mutex alu_mutex; /* ALU access */ 54 struct mutex vlan_mutex; /* vlan access */ 55 const struct ksz_dev_ops *dev_ops; 56 57 struct device *dev; 58 struct regmap *regmap[3]; 59 60 void *priv; 61 62 struct gpio_desc *reset_gpio; /* Optional reset GPIO */ 63 64 /* chip specific data */ 65 u32 chip_id; 66 int num_vlans; 67 int num_alus; 68 int num_statics; 69 int cpu_port; /* port connected to CPU */ 70 int cpu_ports; /* port bitmap can be cpu port */ 71 int phy_port_cnt; 72 int port_cnt; 73 int reg_mib_cnt; 74 int mib_cnt; 75 int mib_port_cnt; 76 int last_port; /* ports after that not used */ 77 phy_interface_t compat_interface; 78 u32 regs_size; 79 bool phy_errata_9477; 80 bool synclko_125; 81 82 struct vlan_table *vlan_cache; 83 84 struct ksz_port *ports; 85 struct delayed_work mib_read; 86 unsigned long mib_read_interval; 87 u16 br_member; 88 u16 member; 89 u16 mirror_rx; 90 u16 mirror_tx; 91 u32 features; /* chip specific features */ 92 u32 overrides; /* chip functions set by user */ 93 u16 host_mask; 94 u16 port_mask; 95}; 96 97struct alu_struct { 98 /* entry 1 */ 99 u8 is_static:1; 100 u8 is_src_filter:1; 101 u8 is_dst_filter:1; 102 u8 prio_age:3; 103 u32 _reserv_0_1:23; 104 u8 mstp:3; 105 /* entry 2 */ 106 u8 is_override:1; 107 u8 is_use_fid:1; 108 u32 _reserv_1_1:23; 109 u8 port_forward:7; 110 /* entry 3 & 4*/ 111 u32 _reserv_2_1:9; 112 u8 fid:7; 113 u8 mac[ETH_ALEN]; 114}; 115 116struct ksz_dev_ops { 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, 126 u16 *entries); 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, 132 u64 *cnt); 133 void (*r_mib_pkt)(struct ksz_device *dev, int port, u16 addr, 134 u64 *dropped, u64 *cnt); 135 void (*freeze_mib)(struct ksz_device *dev, int port, bool freeze); 136 void (*port_init_cnt)(struct ksz_device *dev, int port); 137 int (*shutdown)(struct ksz_device *dev); 138 int (*detect)(struct ksz_device *dev); 139 int (*init)(struct ksz_device *dev); 140 void (*exit)(struct ksz_device *dev); 141}; 142 143struct ksz_device *ksz_switch_alloc(struct device *base, void *priv); 144int ksz_switch_register(struct ksz_device *dev, 145 const struct ksz_dev_ops *ops); 146void ksz_switch_remove(struct ksz_device *dev); 147 148int ksz8795_switch_register(struct ksz_device *dev); 149int ksz9477_switch_register(struct ksz_device *dev); 150 151void ksz_update_port_member(struct ksz_device *dev, int port); 152void ksz_init_mib_timer(struct ksz_device *dev); 153 154/* Common DSA access functions */ 155 156int ksz_phy_read16(struct dsa_switch *ds, int addr, int reg); 157int ksz_phy_write16(struct dsa_switch *ds, int addr, int reg, u16 val); 158void ksz_mac_link_down(struct dsa_switch *ds, int port, unsigned int mode, 159 phy_interface_t interface); 160int ksz_sset_count(struct dsa_switch *ds, int port, int sset); 161void ksz_get_ethtool_stats(struct dsa_switch *ds, int port, uint64_t *buf); 162int ksz_port_bridge_join(struct dsa_switch *ds, int port, 163 struct net_device *br); 164void ksz_port_bridge_leave(struct dsa_switch *ds, int port, 165 struct net_device *br); 166void ksz_port_fast_age(struct dsa_switch *ds, int port); 167int ksz_port_vlan_prepare(struct dsa_switch *ds, int port, 168 const struct switchdev_obj_port_vlan *vlan); 169int ksz_port_fdb_dump(struct dsa_switch *ds, int port, dsa_fdb_dump_cb_t *cb, 170 void *data); 171int ksz_port_mdb_prepare(struct dsa_switch *ds, int port, 172 const struct switchdev_obj_port_mdb *mdb); 173void ksz_port_mdb_add(struct dsa_switch *ds, int port, 174 const struct switchdev_obj_port_mdb *mdb); 175int ksz_port_mdb_del(struct dsa_switch *ds, int port, 176 const struct switchdev_obj_port_mdb *mdb); 177int ksz_enable_port(struct dsa_switch *ds, int port, struct phy_device *phy); 178 179/* Common register access functions */ 180 181static inline int ksz_read8(struct ksz_device *dev, u32 reg, u8 *val) 182{ 183 unsigned int value; 184 int ret = regmap_read(dev->regmap[0], reg, &value); 185 186 *val = value; 187 return ret; 188} 189 190static inline int ksz_read16(struct ksz_device *dev, u32 reg, u16 *val) 191{ 192 unsigned int value; 193 int ret = regmap_read(dev->regmap[1], reg, &value); 194 195 *val = value; 196 return ret; 197} 198 199static inline int ksz_read32(struct ksz_device *dev, u32 reg, u32 *val) 200{ 201 unsigned int value; 202 int ret = regmap_read(dev->regmap[2], reg, &value); 203 204 *val = value; 205 return ret; 206} 207 208static inline int ksz_read64(struct ksz_device *dev, u32 reg, u64 *val) 209{ 210 u32 value[2]; 211 int ret; 212 213 ret = regmap_bulk_read(dev->regmap[2], reg, value, 2); 214 if (!ret) 215 *val = (u64)value[0] << 32 | value[1]; 216 217 return ret; 218} 219 220static inline int ksz_write8(struct ksz_device *dev, u32 reg, u8 value) 221{ 222 return regmap_write(dev->regmap[0], reg, value); 223} 224 225static inline int ksz_write16(struct ksz_device *dev, u32 reg, u16 value) 226{ 227 return regmap_write(dev->regmap[1], reg, value); 228} 229 230static inline int ksz_write32(struct ksz_device *dev, u32 reg, u32 value) 231{ 232 return regmap_write(dev->regmap[2], reg, value); 233} 234 235static inline int ksz_write64(struct ksz_device *dev, u32 reg, u64 value) 236{ 237 u32 val[2]; 238 239 /* 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); 243 244 return regmap_bulk_write(dev->regmap[2], reg, val, 2); 245} 246 247static inline void ksz_pread8(struct ksz_device *dev, int port, int offset, 248 u8 *data) 249{ 250 ksz_read8(dev, dev->dev_ops->get_port_addr(port, offset), data); 251} 252 253static inline void ksz_pread16(struct ksz_device *dev, int port, int offset, 254 u16 *data) 255{ 256 ksz_read16(dev, dev->dev_ops->get_port_addr(port, offset), data); 257} 258 259static inline void ksz_pread32(struct ksz_device *dev, int port, int offset, 260 u32 *data) 261{ 262 ksz_read32(dev, dev->dev_ops->get_port_addr(port, offset), data); 263} 264 265static inline void ksz_pwrite8(struct ksz_device *dev, int port, int offset, 266 u8 data) 267{ 268 ksz_write8(dev, dev->dev_ops->get_port_addr(port, offset), data); 269} 270 271static inline void ksz_pwrite16(struct ksz_device *dev, int port, int offset, 272 u16 data) 273{ 274 ksz_write16(dev, dev->dev_ops->get_port_addr(port, offset), data); 275} 276 277static inline void ksz_pwrite32(struct ksz_device *dev, int port, int offset, 278 u32 data) 279{ 280 ksz_write32(dev, dev->dev_ops->get_port_addr(port, offset), data); 281} 282 283static inline void ksz_regmap_lock(void *__mtx) 284{ 285 struct mutex *mtx = __mtx; 286 mutex_lock(mtx); 287} 288 289static inline void ksz_regmap_unlock(void *__mtx) 290{ 291 struct mutex *mtx = __mtx; 292 mutex_unlock(mtx); 293} 294 295/* Regmap tables generation */ 296#define KSZ_SPI_OP_RD 3 297#define KSZ_SPI_OP_WR 2 298 299#define swabnot_used(x) 0 300 301#define KSZ_SPI_OP_FLAG_MASK(opcode, swp, regbits, regpad) \ 302 swab##swp((opcode) << ((regbits) + (regpad))) 303 304#define KSZ_REGMAP_ENTRY(width, swp, regbits, regpad, regalign) \ 305 { \ 306 .name = #width, \ 307 .val_bits = (width), \ 308 .reg_stride = 1, \ 309 .reg_bits = (regbits) + (regalign), \ 310 .pad_bits = (regpad), \ 311 .max_register = BIT(regbits) - 1, \ 312 .cache_type = REGCACHE_NONE, \ 313 .read_flag_mask = \ 314 KSZ_SPI_OP_FLAG_MASK(KSZ_SPI_OP_RD, swp, \ 315 regbits, regpad), \ 316 .write_flag_mask = \ 317 KSZ_SPI_OP_FLAG_MASK(KSZ_SPI_OP_WR, swp, \ 318 regbits, regpad), \ 319 .lock = ksz_regmap_lock, \ 320 .unlock = ksz_regmap_unlock, \ 321 .reg_format_endian = REGMAP_ENDIAN_BIG, \ 322 .val_format_endian = REGMAP_ENDIAN_BIG \ 323 } 324 325#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)), \ 330 } 331 332#endif 333