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>
17 #define KSZ_MAX_NUM_PORTS 8
24 struct mutex cnt_mutex; /* structure access */
27 struct rtnl_link_stats64 stats64;
28 struct ethtool_pause_stats pause_stats;
29 struct spinlock stats64_lock;
32 struct ksz_mib_names {
34 char string[ETH_GSTRING_LEN];
37 struct ksz_chip_data {
45 const struct ksz_dev_ops *ops;
47 bool ksz87xx_eee_link_erratum;
48 const struct ksz_mib_names *mib_names;
57 int broadcast_ctrl_reg;
58 int multicast_ctrl_reg;
60 bool supports_mii[KSZ_MAX_NUM_PORTS];
61 bool supports_rmii[KSZ_MAX_NUM_PORTS];
62 bool supports_rgmii[KSZ_MAX_NUM_PORTS];
63 bool internal_phy[KSZ_MAX_NUM_PORTS];
67 bool remove_tag; /* Remove Tag flag set, for ksz8795 only */
69 struct phy_device phydev;
71 u32 on:1; /* port is not disabled by hardware */
72 u32 phy:1; /* port has a PHY */
73 u32 fiber:1; /* port is fiber */
74 u32 sgmii:1; /* port is SGMII */
76 u32 read:1; /* read MIB counters in background */
77 u32 freeze:1; /* MIB counter freeze is enabled */
79 struct ksz_port_mib mib;
80 phy_interface_t interface;
87 struct dsa_switch *ds;
88 struct ksz_platform_data *pdata;
89 const struct ksz_chip_data *info;
91 struct mutex dev_mutex; /* device access */
92 struct mutex regmap_mutex; /* regmap access */
93 struct mutex alu_mutex; /* ALU access */
94 struct mutex vlan_mutex; /* vlan access */
95 const struct ksz_dev_ops *dev_ops;
98 struct regmap *regmap[3];
102 struct gpio_desc *reset_gpio; /* Optional reset GPIO */
104 /* chip specific data */
107 int cpu_port; /* port connected to CPU */
109 phy_interface_t compat_interface;
111 bool synclko_disable;
113 struct vlan_table *vlan_cache;
115 struct ksz_port *ports;
116 struct delayed_work mib_read;
117 unsigned long mib_read_interval;
120 u32 features; /* chip specific features */
124 /* List of supported models */
142 KSZ8795_CHIP_ID = 0x8795,
143 KSZ8794_CHIP_ID = 0x8794,
144 KSZ8765_CHIP_ID = 0x8765,
145 KSZ8830_CHIP_ID = 0x8830,
146 KSZ9477_CHIP_ID = 0x00947700,
147 KSZ9897_CHIP_ID = 0x00989700,
148 KSZ9893_CHIP_ID = 0x00989300,
149 KSZ9567_CHIP_ID = 0x00956700,
150 LAN9370_CHIP_ID = 0x00937000,
151 LAN9371_CHIP_ID = 0x00937100,
152 LAN9372_CHIP_ID = 0x00937200,
153 LAN9373_CHIP_ID = 0x00937300,
154 LAN9374_CHIP_ID = 0x00937400,
181 PORT_802_1P_REMAPPING,
183 MIB_COUNTER_OVERFLOW,
186 VLAN_TABLE_MEMBERSHIP,
188 STATIC_MAC_TABLE_VALID,
189 STATIC_MAC_TABLE_USE_FID,
190 STATIC_MAC_TABLE_FID,
191 STATIC_MAC_TABLE_OVERRIDE,
192 STATIC_MAC_TABLE_FWD_PORTS,
193 DYNAMIC_MAC_TABLE_ENTRIES_H,
194 DYNAMIC_MAC_TABLE_MAC_EMPTY,
195 DYNAMIC_MAC_TABLE_NOT_READY,
196 DYNAMIC_MAC_TABLE_ENTRIES,
197 DYNAMIC_MAC_TABLE_FID,
198 DYNAMIC_MAC_TABLE_SRC_PORT,
199 DYNAMIC_MAC_TABLE_TIMESTAMP,
207 VLAN_TABLE_MEMBERSHIP_S,
209 STATIC_MAC_FWD_PORTS,
211 DYNAMIC_MAC_ENTRIES_H,
214 DYNAMIC_MAC_TIMESTAMP,
215 DYNAMIC_MAC_SRC_PORT,
219 enum ksz_xmii_ctrl0 {
226 enum ksz_xmii_ctrl1 {
255 int (*setup)(struct dsa_switch *ds);
256 u32 (*get_port_addr)(int port, int offset);
257 void (*cfg_port_member)(struct ksz_device *dev, int port, u8 member);
258 void (*flush_dyn_mac_table)(struct ksz_device *dev, int port);
259 void (*port_cleanup)(struct ksz_device *dev, int port);
260 void (*port_setup)(struct ksz_device *dev, int port, bool cpu_port);
261 void (*r_phy)(struct ksz_device *dev, u16 phy, u16 reg, u16 *val);
262 void (*w_phy)(struct ksz_device *dev, u16 phy, u16 reg, u16 val);
263 void (*r_mib_cnt)(struct ksz_device *dev, int port, u16 addr,
265 void (*r_mib_pkt)(struct ksz_device *dev, int port, u16 addr,
266 u64 *dropped, u64 *cnt);
267 void (*r_mib_stat64)(struct ksz_device *dev, int port);
268 int (*vlan_filtering)(struct ksz_device *dev, int port,
269 bool flag, struct netlink_ext_ack *extack);
270 int (*vlan_add)(struct ksz_device *dev, int port,
271 const struct switchdev_obj_port_vlan *vlan,
272 struct netlink_ext_ack *extack);
273 int (*vlan_del)(struct ksz_device *dev, int port,
274 const struct switchdev_obj_port_vlan *vlan);
275 int (*mirror_add)(struct ksz_device *dev, int port,
276 struct dsa_mall_mirror_tc_entry *mirror,
277 bool ingress, struct netlink_ext_ack *extack);
278 void (*mirror_del)(struct ksz_device *dev, int port,
279 struct dsa_mall_mirror_tc_entry *mirror);
280 int (*fdb_add)(struct ksz_device *dev, int port,
281 const unsigned char *addr, u16 vid, struct dsa_db db);
282 int (*fdb_del)(struct ksz_device *dev, int port,
283 const unsigned char *addr, u16 vid, struct dsa_db db);
284 int (*fdb_dump)(struct ksz_device *dev, int port,
285 dsa_fdb_dump_cb_t *cb, void *data);
286 int (*mdb_add)(struct ksz_device *dev, int port,
287 const struct switchdev_obj_port_mdb *mdb,
289 int (*mdb_del)(struct ksz_device *dev, int port,
290 const struct switchdev_obj_port_mdb *mdb,
292 void (*get_caps)(struct ksz_device *dev, int port,
293 struct phylink_config *config);
294 int (*change_mtu)(struct ksz_device *dev, int port, int mtu);
295 int (*max_mtu)(struct ksz_device *dev, int port);
296 void (*freeze_mib)(struct ksz_device *dev, int port, bool freeze);
297 void (*port_init_cnt)(struct ksz_device *dev, int port);
298 void (*phylink_mac_config)(struct ksz_device *dev, int port,
300 const struct phylink_link_state *state);
301 void (*phylink_mac_link_up)(struct ksz_device *dev, int port,
303 phy_interface_t interface,
304 struct phy_device *phydev, int speed,
305 int duplex, bool tx_pause, bool rx_pause);
306 void (*setup_rgmii_delay)(struct ksz_device *dev, int port);
307 void (*config_cpu_port)(struct dsa_switch *ds);
308 int (*enable_stp_addr)(struct ksz_device *dev);
309 int (*reset)(struct ksz_device *dev);
310 int (*init)(struct ksz_device *dev);
311 void (*exit)(struct ksz_device *dev);
314 struct ksz_device *ksz_switch_alloc(struct device *base, void *priv);
315 int ksz_switch_register(struct ksz_device *dev);
316 void ksz_switch_remove(struct ksz_device *dev);
318 void ksz_init_mib_timer(struct ksz_device *dev);
319 void ksz_r_mib_stats64(struct ksz_device *dev, int port);
320 void ksz_port_stp_state_set(struct dsa_switch *ds, int port, u8 state);
321 bool ksz_get_gbit(struct ksz_device *dev, int port);
322 phy_interface_t ksz_get_xmii(struct ksz_device *dev, int port, bool gbit);
323 extern const struct ksz_chip_data ksz_switch_chips[];
325 /* Common register access functions */
327 static inline int ksz_read8(struct ksz_device *dev, u32 reg, u8 *val)
330 int ret = regmap_read(dev->regmap[0], reg, &value);
336 static inline int ksz_read16(struct ksz_device *dev, u32 reg, u16 *val)
339 int ret = regmap_read(dev->regmap[1], reg, &value);
345 static inline int ksz_read32(struct ksz_device *dev, u32 reg, u32 *val)
348 int ret = regmap_read(dev->regmap[2], reg, &value);
354 static inline int ksz_read64(struct ksz_device *dev, u32 reg, u64 *val)
359 ret = regmap_bulk_read(dev->regmap[2], reg, value, 2);
361 *val = (u64)value[0] << 32 | value[1];
366 static inline int ksz_write8(struct ksz_device *dev, u32 reg, u8 value)
368 return regmap_write(dev->regmap[0], reg, value);
371 static inline int ksz_write16(struct ksz_device *dev, u32 reg, u16 value)
373 return regmap_write(dev->regmap[1], reg, value);
376 static inline int ksz_write32(struct ksz_device *dev, u32 reg, u32 value)
378 return regmap_write(dev->regmap[2], reg, value);
381 static inline int ksz_write64(struct ksz_device *dev, u32 reg, u64 value)
385 /* Ick! ToDo: Add 64bit R/W to regmap on 32bit systems */
386 value = swab64(value);
387 val[0] = swab32(value & 0xffffffffULL);
388 val[1] = swab32(value >> 32ULL);
390 return regmap_bulk_write(dev->regmap[2], reg, val, 2);
393 static inline void ksz_pread8(struct ksz_device *dev, int port, int offset,
396 ksz_read8(dev, dev->dev_ops->get_port_addr(port, offset), data);
399 static inline void ksz_pread16(struct ksz_device *dev, int port, int offset,
402 ksz_read16(dev, dev->dev_ops->get_port_addr(port, offset), data);
405 static inline void ksz_pread32(struct ksz_device *dev, int port, int offset,
408 ksz_read32(dev, dev->dev_ops->get_port_addr(port, offset), data);
411 static inline void ksz_pwrite8(struct ksz_device *dev, int port, int offset,
414 ksz_write8(dev, dev->dev_ops->get_port_addr(port, offset), data);
417 static inline void ksz_pwrite16(struct ksz_device *dev, int port, int offset,
420 ksz_write16(dev, dev->dev_ops->get_port_addr(port, offset), data);
423 static inline void ksz_pwrite32(struct ksz_device *dev, int port, int offset,
426 ksz_write32(dev, dev->dev_ops->get_port_addr(port, offset), data);
429 static inline void ksz_prmw8(struct ksz_device *dev, int port, int offset,
432 regmap_update_bits(dev->regmap[0],
433 dev->dev_ops->get_port_addr(port, offset),
437 static inline void ksz_regmap_lock(void *__mtx)
439 struct mutex *mtx = __mtx;
443 static inline void ksz_regmap_unlock(void *__mtx)
445 struct mutex *mtx = __mtx;
449 static inline bool ksz_is_ksz88x3(struct ksz_device *dev)
451 return dev->chip_id == KSZ8830_CHIP_ID;
454 static inline int is_lan937x(struct ksz_device *dev)
456 return dev->chip_id == LAN9370_CHIP_ID ||
457 dev->chip_id == LAN9371_CHIP_ID ||
458 dev->chip_id == LAN9372_CHIP_ID ||
459 dev->chip_id == LAN9373_CHIP_ID ||
460 dev->chip_id == LAN9374_CHIP_ID;
463 /* STP State Defines */
464 #define PORT_TX_ENABLE BIT(2)
465 #define PORT_RX_ENABLE BIT(1)
466 #define PORT_LEARN_DISABLE BIT(0)
468 /* Switch ID Defines */
469 #define REG_CHIP_ID0 0x00
471 #define SW_FAMILY_ID_M GENMASK(15, 8)
472 #define KSZ87_FAMILY_ID 0x87
473 #define KSZ88_FAMILY_ID 0x88
475 #define KSZ8_PORT_STATUS_0 0x08
476 #define KSZ8_PORT_FIBER_MODE BIT(7)
478 #define SW_CHIP_ID_M GENMASK(7, 4)
479 #define KSZ87_CHIP_ID_94 0x6
480 #define KSZ87_CHIP_ID_95 0x9
481 #define KSZ88_CHIP_ID_63 0x3
483 #define SW_REV_ID_M GENMASK(7, 4)
485 /* Driver set switch broadcast storm protection at 10% rate. */
486 #define BROADCAST_STORM_PROT_RATE 10
488 /* 148,800 frames * 67 ms / 100 */
489 #define BROADCAST_STORM_VALUE 9969
491 #define BROADCAST_STORM_RATE_HI 0x07
492 #define BROADCAST_STORM_RATE_LO 0xFF
493 #define BROADCAST_STORM_RATE 0x07FF
495 #define MULTICAST_STORM_DISABLE BIT(6)
497 #define SW_START 0x01
499 /* Used with variable features to indicate capabilities. */
500 #define GBIT_SUPPORT BIT(0)
501 #define IS_9893 BIT(2)
503 /* xMII configuration */
504 #define P_MII_DUPLEX_M BIT(6)
505 #define P_MII_100MBIT_M BIT(4)
507 #define P_GMII_1GBIT_M BIT(6)
508 #define P_RGMII_ID_IG_ENABLE BIT(4)
509 #define P_RGMII_ID_EG_ENABLE BIT(3)
510 #define P_MII_MAC_MODE BIT(2)
511 #define P_MII_SEL_M 0x3
513 /* Regmap tables generation */
514 #define KSZ_SPI_OP_RD 3
515 #define KSZ_SPI_OP_WR 2
517 #define swabnot_used(x) 0
519 #define KSZ_SPI_OP_FLAG_MASK(opcode, swp, regbits, regpad) \
520 swab##swp((opcode) << ((regbits) + (regpad)))
522 #define KSZ_REGMAP_ENTRY(width, swp, regbits, regpad, regalign) \
525 .val_bits = (width), \
527 .reg_bits = (regbits) + (regalign), \
528 .pad_bits = (regpad), \
529 .max_register = BIT(regbits) - 1, \
530 .cache_type = REGCACHE_NONE, \
532 KSZ_SPI_OP_FLAG_MASK(KSZ_SPI_OP_RD, swp, \
535 KSZ_SPI_OP_FLAG_MASK(KSZ_SPI_OP_WR, swp, \
537 .lock = ksz_regmap_lock, \
538 .unlock = ksz_regmap_unlock, \
539 .reg_format_endian = REGMAP_ENDIAN_BIG, \
540 .val_format_endian = REGMAP_ENDIAN_BIG \
543 #define KSZ_REGMAP_TABLE(ksz, swp, regbits, regpad, regalign) \
544 static const struct regmap_config ksz##_regmap_config[] = { \
545 KSZ_REGMAP_ENTRY(8, swp, (regbits), (regpad), (regalign)), \
546 KSZ_REGMAP_ENTRY(16, swp, (regbits), (regpad), (regalign)), \
547 KSZ_REGMAP_ENTRY(32, swp, (regbits), (regpad), (regalign)), \