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>
16 #include <linux/irq.h>
17 #include <linux/platform_data/microchip-ksz.h>
21 #define KSZ_MAX_NUM_PORTS 8
22 /* all KSZ switches count ports from 1 */
28 struct phylink_mac_ops;
30 enum ksz_regmap_width {
42 struct mutex cnt_mutex; /* structure access */
45 struct rtnl_link_stats64 stats64;
46 struct ethtool_pause_stats pause_stats;
47 struct spinlock stats64_lock;
50 struct ksz_mib_names {
52 char string[ETH_GSTRING_LEN];
55 struct ksz_chip_data {
65 u8 num_ipms; /* number of Internal Priority Maps */
66 bool tc_cbs_supported;
67 const struct ksz_dev_ops *ops;
68 const struct phylink_mac_ops *phylink_mac_ops;
69 bool ksz87xx_eee_link_erratum;
70 const struct ksz_mib_names *mib_names;
79 int broadcast_ctrl_reg;
80 int multicast_ctrl_reg;
82 bool supports_mii[KSZ_MAX_NUM_PORTS];
83 bool supports_rmii[KSZ_MAX_NUM_PORTS];
84 bool supports_rgmii[KSZ_MAX_NUM_PORTS];
85 bool internal_phy[KSZ_MAX_NUM_PORTS];
86 bool gbit_capable[KSZ_MAX_NUM_PORTS];
87 const struct regmap_access_table *wr_table;
88 const struct regmap_access_table *rd_table;
95 struct irq_domain *domain;
99 struct ksz_device *dev;
103 struct ksz_port *port;
110 struct ksz_switch_macaddr {
111 unsigned char addr[ETH_ALEN];
116 bool remove_tag; /* Remove Tag flag set, for ksz8795 only */
120 struct phy_device phydev;
122 u32 fiber:1; /* port is fiber */
124 u32 read:1; /* read MIB counters in background */
125 u32 freeze:1; /* MIB counter freeze is enabled */
127 struct ksz_port_mib mib;
128 phy_interface_t interface;
131 struct ksz_device *ksz_dev;
135 #if IS_ENABLED(CONFIG_NET_DSA_MICROCHIP_KSZ_PTP)
136 struct hwtstamp_config tstamp_config;
139 struct ksz_irq ptpirq;
140 struct ksz_ptp_irq ptpmsg_irq[3];
142 struct completion tstamp_msg_comp;
148 struct dsa_switch *ds;
149 struct ksz_platform_data *pdata;
150 const struct ksz_chip_data *info;
152 struct mutex dev_mutex; /* device access */
153 struct mutex regmap_mutex; /* regmap access */
154 struct mutex alu_mutex; /* ALU access */
155 struct mutex vlan_mutex; /* vlan access */
156 const struct ksz_dev_ops *dev_ops;
159 struct regmap *regmap[__KSZ_NUM_REGMAPS];
164 struct gpio_desc *reset_gpio; /* Optional reset GPIO */
166 /* chip specific data */
169 int cpu_port; /* port connected to CPU */
171 phy_interface_t compat_interface;
173 bool synclko_disable;
176 struct vlan_table *vlan_cache;
178 struct ksz_port *ports;
179 struct delayed_work mib_read;
180 unsigned long mib_read_interval;
184 struct mutex lock_irq; /* IRQ Access */
186 struct ksz_ptp_data ptp_data;
188 struct ksz_switch_macaddr *switch_macaddr;
189 struct net_device *hsr_dev; /* HSR */
193 /* List of supported models */
239 PORT_802_1P_REMAPPING,
241 MIB_COUNTER_OVERFLOW,
244 VLAN_TABLE_MEMBERSHIP,
246 STATIC_MAC_TABLE_VALID,
247 STATIC_MAC_TABLE_USE_FID,
248 STATIC_MAC_TABLE_FID,
249 STATIC_MAC_TABLE_OVERRIDE,
250 STATIC_MAC_TABLE_FWD_PORTS,
251 DYNAMIC_MAC_TABLE_ENTRIES_H,
252 DYNAMIC_MAC_TABLE_MAC_EMPTY,
253 DYNAMIC_MAC_TABLE_NOT_READY,
254 DYNAMIC_MAC_TABLE_ENTRIES,
255 DYNAMIC_MAC_TABLE_FID,
256 DYNAMIC_MAC_TABLE_SRC_PORT,
257 DYNAMIC_MAC_TABLE_TIMESTAMP,
265 VLAN_TABLE_MEMBERSHIP_S,
267 STATIC_MAC_FWD_PORTS,
269 DYNAMIC_MAC_ENTRIES_H,
272 DYNAMIC_MAC_TIMESTAMP,
273 DYNAMIC_MAC_SRC_PORT,
277 enum ksz_xmii_ctrl0 {
284 enum ksz_xmii_ctrl1 {
313 int (*setup)(struct dsa_switch *ds);
314 void (*teardown)(struct dsa_switch *ds);
315 u32 (*get_port_addr)(int port, int offset);
316 void (*cfg_port_member)(struct ksz_device *dev, int port, u8 member);
317 void (*flush_dyn_mac_table)(struct ksz_device *dev, int port);
318 void (*port_cleanup)(struct ksz_device *dev, int port);
319 void (*port_setup)(struct ksz_device *dev, int port, bool cpu_port);
320 int (*set_ageing_time)(struct ksz_device *dev, unsigned int msecs);
321 int (*r_phy)(struct ksz_device *dev, u16 phy, u16 reg, u16 *val);
322 int (*w_phy)(struct ksz_device *dev, u16 phy, u16 reg, u16 val);
323 void (*r_mib_cnt)(struct ksz_device *dev, int port, u16 addr,
325 void (*r_mib_pkt)(struct ksz_device *dev, int port, u16 addr,
326 u64 *dropped, u64 *cnt);
327 void (*r_mib_stat64)(struct ksz_device *dev, int port);
328 int (*vlan_filtering)(struct ksz_device *dev, int port,
329 bool flag, struct netlink_ext_ack *extack);
330 int (*vlan_add)(struct ksz_device *dev, int port,
331 const struct switchdev_obj_port_vlan *vlan,
332 struct netlink_ext_ack *extack);
333 int (*vlan_del)(struct ksz_device *dev, int port,
334 const struct switchdev_obj_port_vlan *vlan);
335 int (*mirror_add)(struct ksz_device *dev, int port,
336 struct dsa_mall_mirror_tc_entry *mirror,
337 bool ingress, struct netlink_ext_ack *extack);
338 void (*mirror_del)(struct ksz_device *dev, int port,
339 struct dsa_mall_mirror_tc_entry *mirror);
340 int (*fdb_add)(struct ksz_device *dev, int port,
341 const unsigned char *addr, u16 vid, struct dsa_db db);
342 int (*fdb_del)(struct ksz_device *dev, int port,
343 const unsigned char *addr, u16 vid, struct dsa_db db);
344 int (*fdb_dump)(struct ksz_device *dev, int port,
345 dsa_fdb_dump_cb_t *cb, void *data);
346 int (*mdb_add)(struct ksz_device *dev, int port,
347 const struct switchdev_obj_port_mdb *mdb,
349 int (*mdb_del)(struct ksz_device *dev, int port,
350 const struct switchdev_obj_port_mdb *mdb,
352 void (*get_caps)(struct ksz_device *dev, int port,
353 struct phylink_config *config);
354 int (*change_mtu)(struct ksz_device *dev, int port, int mtu);
355 void (*freeze_mib)(struct ksz_device *dev, int port, bool freeze);
356 void (*port_init_cnt)(struct ksz_device *dev, int port);
357 void (*phylink_mac_link_up)(struct ksz_device *dev, int port,
359 phy_interface_t interface,
360 struct phy_device *phydev, int speed,
361 int duplex, bool tx_pause, bool rx_pause);
362 void (*setup_rgmii_delay)(struct ksz_device *dev, int port);
363 int (*tc_cbs_set_cinc)(struct ksz_device *dev, int port, u32 val);
364 void (*get_wol)(struct ksz_device *dev, int port,
365 struct ethtool_wolinfo *wol);
366 int (*set_wol)(struct ksz_device *dev, int port,
367 struct ethtool_wolinfo *wol);
368 void (*wol_pre_shutdown)(struct ksz_device *dev, bool *wol_enabled);
369 void (*config_cpu_port)(struct dsa_switch *ds);
370 int (*enable_stp_addr)(struct ksz_device *dev);
371 int (*reset)(struct ksz_device *dev);
372 int (*init)(struct ksz_device *dev);
373 void (*exit)(struct ksz_device *dev);
376 struct ksz_device *ksz_switch_alloc(struct device *base, void *priv);
377 int ksz_switch_register(struct ksz_device *dev);
378 void ksz_switch_remove(struct ksz_device *dev);
380 void ksz_init_mib_timer(struct ksz_device *dev);
381 bool ksz_is_port_mac_global_usable(struct dsa_switch *ds, int port);
382 void ksz_r_mib_stats64(struct ksz_device *dev, int port);
383 void ksz88xx_r_mib_stats64(struct ksz_device *dev, int port);
384 void ksz_port_stp_state_set(struct dsa_switch *ds, int port, u8 state);
385 bool ksz_get_gbit(struct ksz_device *dev, int port);
386 phy_interface_t ksz_get_xmii(struct ksz_device *dev, int port, bool gbit);
387 extern const struct ksz_chip_data ksz_switch_chips[];
388 int ksz_switch_macaddr_get(struct dsa_switch *ds, int port,
389 struct netlink_ext_ack *extack);
390 void ksz_switch_macaddr_put(struct dsa_switch *ds);
391 void ksz_switch_shutdown(struct ksz_device *dev);
393 /* Common register access functions */
394 static inline struct regmap *ksz_regmap_8(struct ksz_device *dev)
396 return dev->regmap[KSZ_REGMAP_8];
399 static inline struct regmap *ksz_regmap_16(struct ksz_device *dev)
401 return dev->regmap[KSZ_REGMAP_16];
404 static inline struct regmap *ksz_regmap_32(struct ksz_device *dev)
406 return dev->regmap[KSZ_REGMAP_32];
409 static inline int ksz_read8(struct ksz_device *dev, u32 reg, u8 *val)
412 int ret = regmap_read(ksz_regmap_8(dev), reg, &value);
415 dev_err(dev->dev, "can't read 8bit reg: 0x%x %pe\n", reg,
422 static inline int ksz_read16(struct ksz_device *dev, u32 reg, u16 *val)
425 int ret = regmap_read(ksz_regmap_16(dev), reg, &value);
428 dev_err(dev->dev, "can't read 16bit reg: 0x%x %pe\n", reg,
435 static inline int ksz_read32(struct ksz_device *dev, u32 reg, u32 *val)
438 int ret = regmap_read(ksz_regmap_32(dev), reg, &value);
441 dev_err(dev->dev, "can't read 32bit reg: 0x%x %pe\n", reg,
448 static inline int ksz_read64(struct ksz_device *dev, u32 reg, u64 *val)
453 ret = regmap_bulk_read(ksz_regmap_32(dev), reg, value, 2);
455 dev_err(dev->dev, "can't read 64bit reg: 0x%x %pe\n", reg,
458 *val = (u64)value[0] << 32 | value[1];
463 static inline int ksz_write8(struct ksz_device *dev, u32 reg, u8 value)
467 ret = regmap_write(ksz_regmap_8(dev), reg, value);
469 dev_err(dev->dev, "can't write 8bit reg: 0x%x %pe\n", reg,
475 static inline int ksz_write16(struct ksz_device *dev, u32 reg, u16 value)
479 ret = regmap_write(ksz_regmap_16(dev), reg, value);
481 dev_err(dev->dev, "can't write 16bit reg: 0x%x %pe\n", reg,
487 static inline int ksz_write32(struct ksz_device *dev, u32 reg, u32 value)
491 ret = regmap_write(ksz_regmap_32(dev), reg, value);
493 dev_err(dev->dev, "can't write 32bit reg: 0x%x %pe\n", reg,
499 static inline int ksz_rmw16(struct ksz_device *dev, u32 reg, u16 mask,
504 ret = regmap_update_bits(ksz_regmap_16(dev), reg, mask, value);
506 dev_err(dev->dev, "can't rmw 16bit reg 0x%x: %pe\n", reg,
512 static inline int ksz_rmw32(struct ksz_device *dev, u32 reg, u32 mask,
517 ret = regmap_update_bits(ksz_regmap_32(dev), reg, mask, value);
519 dev_err(dev->dev, "can't rmw 32bit reg 0x%x: %pe\n", reg,
525 static inline int ksz_write64(struct ksz_device *dev, u32 reg, u64 value)
529 /* Ick! ToDo: Add 64bit R/W to regmap on 32bit systems */
530 value = swab64(value);
531 val[0] = swab32(value & 0xffffffffULL);
532 val[1] = swab32(value >> 32ULL);
534 return regmap_bulk_write(ksz_regmap_32(dev), reg, val, 2);
537 static inline int ksz_rmw8(struct ksz_device *dev, int offset, u8 mask, u8 val)
541 ret = regmap_update_bits(ksz_regmap_8(dev), offset, mask, val);
543 dev_err(dev->dev, "can't rmw 8bit reg 0x%x: %pe\n", offset,
549 static inline int ksz_pread8(struct ksz_device *dev, int port, int offset,
552 return ksz_read8(dev, dev->dev_ops->get_port_addr(port, offset), data);
555 static inline int ksz_pread16(struct ksz_device *dev, int port, int offset,
558 return ksz_read16(dev, dev->dev_ops->get_port_addr(port, offset), data);
561 static inline int ksz_pread32(struct ksz_device *dev, int port, int offset,
564 return ksz_read32(dev, dev->dev_ops->get_port_addr(port, offset), data);
567 static inline int ksz_pwrite8(struct ksz_device *dev, int port, int offset,
570 return ksz_write8(dev, dev->dev_ops->get_port_addr(port, offset), data);
573 static inline int ksz_pwrite16(struct ksz_device *dev, int port, int offset,
576 return ksz_write16(dev, dev->dev_ops->get_port_addr(port, offset),
580 static inline int ksz_pwrite32(struct ksz_device *dev, int port, int offset,
583 return ksz_write32(dev, dev->dev_ops->get_port_addr(port, offset),
587 static inline int ksz_prmw8(struct ksz_device *dev, int port, int offset,
590 return ksz_rmw8(dev, dev->dev_ops->get_port_addr(port, offset),
594 static inline int ksz_prmw32(struct ksz_device *dev, int port, int offset,
597 return ksz_rmw32(dev, dev->dev_ops->get_port_addr(port, offset),
601 static inline void ksz_regmap_lock(void *__mtx)
603 struct mutex *mtx = __mtx;
607 static inline void ksz_regmap_unlock(void *__mtx)
609 struct mutex *mtx = __mtx;
613 static inline bool ksz_is_ksz87xx(struct ksz_device *dev)
615 return dev->chip_id == KSZ8795_CHIP_ID ||
616 dev->chip_id == KSZ8794_CHIP_ID ||
617 dev->chip_id == KSZ8765_CHIP_ID;
620 static inline bool ksz_is_ksz88x3(struct ksz_device *dev)
622 return dev->chip_id == KSZ8830_CHIP_ID;
625 static inline bool is_ksz8(struct ksz_device *dev)
627 return ksz_is_ksz87xx(dev) || ksz_is_ksz88x3(dev);
630 static inline int is_lan937x(struct ksz_device *dev)
632 return dev->chip_id == LAN9370_CHIP_ID ||
633 dev->chip_id == LAN9371_CHIP_ID ||
634 dev->chip_id == LAN9372_CHIP_ID ||
635 dev->chip_id == LAN9373_CHIP_ID ||
636 dev->chip_id == LAN9374_CHIP_ID;
639 /* STP State Defines */
640 #define PORT_TX_ENABLE BIT(2)
641 #define PORT_RX_ENABLE BIT(1)
642 #define PORT_LEARN_DISABLE BIT(0)
644 /* Switch ID Defines */
645 #define REG_CHIP_ID0 0x00
647 #define SW_FAMILY_ID_M GENMASK(15, 8)
648 #define KSZ87_FAMILY_ID 0x87
649 #define KSZ88_FAMILY_ID 0x88
651 #define KSZ8_PORT_STATUS_0 0x08
652 #define KSZ8_PORT_FIBER_MODE BIT(7)
654 #define SW_CHIP_ID_M GENMASK(7, 4)
655 #define KSZ87_CHIP_ID_94 0x6
656 #define KSZ87_CHIP_ID_95 0x9
657 #define KSZ88_CHIP_ID_63 0x3
659 #define SW_REV_ID_M GENMASK(7, 4)
661 /* KSZ9893, KSZ9563, KSZ8563 specific register */
662 #define REG_CHIP_ID4 0x0f
663 #define SKU_ID_KSZ8563 0x3c
664 #define SKU_ID_KSZ9563 0x1c
666 /* Driver set switch broadcast storm protection at 10% rate. */
667 #define BROADCAST_STORM_PROT_RATE 10
669 /* 148,800 frames * 67 ms / 100 */
670 #define BROADCAST_STORM_VALUE 9969
672 #define BROADCAST_STORM_RATE_HI 0x07
673 #define BROADCAST_STORM_RATE_LO 0xFF
674 #define BROADCAST_STORM_RATE 0x07FF
676 #define MULTICAST_STORM_DISABLE BIT(6)
678 #define SW_START 0x01
680 /* xMII configuration */
681 #define P_MII_DUPLEX_M BIT(6)
682 #define P_MII_100MBIT_M BIT(4)
684 #define P_GMII_1GBIT_M BIT(6)
685 #define P_RGMII_ID_IG_ENABLE BIT(4)
686 #define P_RGMII_ID_EG_ENABLE BIT(3)
687 #define P_MII_MAC_MODE BIT(2)
688 #define P_MII_SEL_M 0x3
691 #define REG_SW_PORT_INT_STATUS__1 0x001B
692 #define REG_SW_PORT_INT_MASK__1 0x001F
694 #define REG_PORT_INT_STATUS 0x001B
695 #define REG_PORT_INT_MASK 0x001F
697 #define PORT_SRC_PHY_INT 1
698 #define PORT_SRC_PTP_INT 2
700 #define KSZ8795_HUGE_PACKET_SIZE 2000
701 #define KSZ8863_HUGE_PACKET_SIZE 1916
702 #define KSZ8863_NORMAL_PACKET_SIZE 1536
703 #define KSZ8_LEGAL_PACKET_SIZE 1518
704 #define KSZ9477_MAX_FRAME_SIZE 9000
706 #define KSZ8873_REG_GLOBAL_CTRL_12 0x0e
707 /* Drive Strength of I/O Pad
710 #define KSZ8873_DRIVE_STRENGTH_16MA BIT(6)
712 #define KSZ8795_REG_SW_CTRL_20 0xa3
713 #define KSZ9477_REG_SW_IO_STRENGTH 0x010d
714 #define SW_DRIVE_STRENGTH_M 0x7
715 #define SW_DRIVE_STRENGTH_2MA 0
716 #define SW_DRIVE_STRENGTH_4MA 1
717 #define SW_DRIVE_STRENGTH_8MA 2
718 #define SW_DRIVE_STRENGTH_12MA 3
719 #define SW_DRIVE_STRENGTH_16MA 4
720 #define SW_DRIVE_STRENGTH_20MA 5
721 #define SW_DRIVE_STRENGTH_24MA 6
722 #define SW_DRIVE_STRENGTH_28MA 7
723 #define SW_HI_SPEED_DRIVE_STRENGTH_S 4
724 #define SW_LO_SPEED_DRIVE_STRENGTH_S 0
726 #define KSZ9477_REG_PORT_OUT_RATE_0 0x0420
727 #define KSZ9477_OUT_RATE_NO_LIMIT 0
729 #define KSZ9477_PORT_MRI_TC_MAP__4 0x0808
731 #define KSZ9477_PORT_TC_MAP_S 4
733 /* CBS related registers */
734 #define REG_PORT_MTI_QUEUE_INDEX__4 0x0900
736 #define REG_PORT_MTI_QUEUE_CTRL_0 0x0914
738 #define MTI_SCHEDULE_MODE_M GENMASK(7, 6)
739 #define MTI_SCHEDULE_STRICT_PRIO 0
740 #define MTI_SCHEDULE_WRR 2
741 #define MTI_SHAPING_M GENMASK(5, 4)
742 #define MTI_SHAPING_OFF 0
743 #define MTI_SHAPING_SRP 1
744 #define MTI_SHAPING_TIME_AWARE 2
746 #define KSZ9477_PORT_MTI_QUEUE_CTRL_1 0x0915
747 #define KSZ9477_DEFAULT_WRR_WEIGHT 1
749 #define REG_PORT_MTI_HI_WATER_MARK 0x0916
750 #define REG_PORT_MTI_LO_WATER_MARK 0x0918
752 /* Regmap tables generation */
753 #define KSZ_SPI_OP_RD 3
754 #define KSZ_SPI_OP_WR 2
756 #define swabnot_used(x) 0
758 #define KSZ_SPI_OP_FLAG_MASK(opcode, swp, regbits, regpad) \
759 swab##swp((opcode) << ((regbits) + (regpad)))
761 #define KSZ_REGMAP_ENTRY(width, swp, regbits, regpad, regalign) \
764 .val_bits = (width), \
766 .reg_bits = (regbits) + (regalign), \
767 .pad_bits = (regpad), \
768 .max_register = BIT(regbits) - 1, \
769 .cache_type = REGCACHE_NONE, \
771 KSZ_SPI_OP_FLAG_MASK(KSZ_SPI_OP_RD, swp, \
774 KSZ_SPI_OP_FLAG_MASK(KSZ_SPI_OP_WR, swp, \
776 .lock = ksz_regmap_lock, \
777 .unlock = ksz_regmap_unlock, \
778 .reg_format_endian = REGMAP_ENDIAN_BIG, \
779 .val_format_endian = REGMAP_ENDIAN_BIG \
782 #define KSZ_REGMAP_TABLE(ksz, swp, regbits, regpad, regalign) \
783 static const struct regmap_config ksz##_regmap_config[] = { \
784 [KSZ_REGMAP_8] = KSZ_REGMAP_ENTRY(8, swp, (regbits), (regpad), (regalign)), \
785 [KSZ_REGMAP_16] = KSZ_REGMAP_ENTRY(16, swp, (regbits), (regpad), (regalign)), \
786 [KSZ_REGMAP_32] = KSZ_REGMAP_ENTRY(32, swp, (regbits), (regpad), (regalign)), \