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/* SPDX-License-Identifier: GPL-2.0
* Microchip switch driver common header
*
* Copyright (C) 2017-2019 Microchip Technology Inc.
*/
#ifndef __KSZ_COMMON_H
#define __KSZ_COMMON_H
#include <linux/etherdevice.h>
#include <linux/kernel.h>
#include <linux/mutex.h>
#include <linux/phy.h>
#include <linux/regmap.h>
#include <net/dsa.h>
struct vlan_table {
u32 table[3];
};
struct ksz_port_mib {
struct mutex cnt_mutex; /* structure access */
u8 cnt_ptr;
u64 *counters;
};
struct ksz_port {
u16 member;
u16 vid_member;
int stp_state;
struct phy_device phydev;
u32 on:1; /* port is not disabled by hardware */
u32 phy:1; /* port has a PHY */
u32 fiber:1; /* port is fiber */
u32 sgmii:1; /* port is SGMII */
u32 force:1;
u32 read:1; /* read MIB counters in background */
u32 freeze:1; /* MIB counter freeze is enabled */
struct ksz_port_mib mib;
};
struct ksz_device {
struct dsa_switch *ds;
struct ksz_platform_data *pdata;
const char *name;
struct mutex dev_mutex; /* device access */
struct mutex stats_mutex; /* status access */
struct mutex alu_mutex; /* ALU access */
struct mutex vlan_mutex; /* vlan access */
const struct ksz_dev_ops *dev_ops;
struct device *dev;
struct regmap *regmap[3];
void *priv;
struct gpio_desc *reset_gpio; /* Optional reset GPIO */
/* chip specific data */
u32 chip_id;
int num_vlans;
int num_alus;
int num_statics;
int cpu_port; /* port connected to CPU */
int cpu_ports; /* port bitmap can be cpu port */
int phy_port_cnt;
int port_cnt;
int reg_mib_cnt;
int mib_cnt;
int mib_port_cnt;
int last_port; /* ports after that not used */
phy_interface_t interface;
u32 regs_size;
bool phy_errata_9477;
bool synclko_125;
struct vlan_table *vlan_cache;
struct ksz_port *ports;
struct timer_list mib_read_timer;
struct work_struct mib_read;
unsigned long mib_read_interval;
u16 br_member;
u16 member;
u16 live_ports;
u16 on_ports; /* ports enabled by DSA */
u16 rx_ports;
u16 tx_ports;
u16 mirror_rx;
u16 mirror_tx;
u32 features; /* chip specific features */
u32 overrides; /* chip functions set by user */
u16 host_mask;
u16 port_mask;
};
struct alu_struct {
/* entry 1 */
u8 is_static:1;
u8 is_src_filter:1;
u8 is_dst_filter:1;
u8 prio_age:3;
u32 _reserv_0_1:23;
u8 mstp:3;
/* entry 2 */
u8 is_override:1;
u8 is_use_fid:1;
u32 _reserv_1_1:23;
u8 port_forward:7;
/* entry 3 & 4*/
u32 _reserv_2_1:9;
u8 fid:7;
u8 mac[ETH_ALEN];
};
struct ksz_dev_ops {
u32 (*get_port_addr)(int port, int offset);
void (*cfg_port_member)(struct ksz_device *dev, int port, u8 member);
void (*flush_dyn_mac_table)(struct ksz_device *dev, int port);
void (*phy_setup)(struct ksz_device *dev, int port,
struct phy_device *phy);
void (*port_cleanup)(struct ksz_device *dev, int port);
void (*port_setup)(struct ksz_device *dev, int port, bool cpu_port);
void (*r_phy)(struct ksz_device *dev, u16 phy, u16 reg, u16 *val);
void (*w_phy)(struct ksz_device *dev, u16 phy, u16 reg, u16 val);
int (*r_dyn_mac_table)(struct ksz_device *dev, u16 addr, u8 *mac_addr,
u8 *fid, u8 *src_port, u8 *timestamp,
u16 *entries);
int (*r_sta_mac_table)(struct ksz_device *dev, u16 addr,
struct alu_struct *alu);
void (*w_sta_mac_table)(struct ksz_device *dev, u16 addr,
struct alu_struct *alu);
void (*r_mib_cnt)(struct ksz_device *dev, int port, u16 addr,
u64 *cnt);
void (*r_mib_pkt)(struct ksz_device *dev, int port, u16 addr,
u64 *dropped, u64 *cnt);
void (*freeze_mib)(struct ksz_device *dev, int port, bool freeze);
void (*port_init_cnt)(struct ksz_device *dev, int port);
int (*shutdown)(struct ksz_device *dev);
int (*detect)(struct ksz_device *dev);
int (*init)(struct ksz_device *dev);
void (*exit)(struct ksz_device *dev);
};
struct ksz_device *ksz_switch_alloc(struct device *base, void *priv);
int ksz_switch_register(struct ksz_device *dev,
const struct ksz_dev_ops *ops);
void ksz_switch_remove(struct ksz_device *dev);
int ksz8795_switch_register(struct ksz_device *dev);
int ksz9477_switch_register(struct ksz_device *dev);
void ksz_update_port_member(struct ksz_device *dev, int port);
void ksz_init_mib_timer(struct ksz_device *dev);
/* Common DSA access functions */
int ksz_phy_read16(struct dsa_switch *ds, int addr, int reg);
int ksz_phy_write16(struct dsa_switch *ds, int addr, int reg, u16 val);
void ksz_adjust_link(struct dsa_switch *ds, int port,
struct phy_device *phydev);
int ksz_sset_count(struct dsa_switch *ds, int port, int sset);
void ksz_get_ethtool_stats(struct dsa_switch *ds, int port, uint64_t *buf);
int ksz_port_bridge_join(struct dsa_switch *ds, int port,
struct net_device *br);
void ksz_port_bridge_leave(struct dsa_switch *ds, int port,
struct net_device *br);
void ksz_port_fast_age(struct dsa_switch *ds, int port);
int ksz_port_vlan_prepare(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_vlan *vlan);
int ksz_port_fdb_dump(struct dsa_switch *ds, int port, dsa_fdb_dump_cb_t *cb,
void *data);
int ksz_port_mdb_prepare(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_mdb *mdb);
void ksz_port_mdb_add(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_mdb *mdb);
int ksz_port_mdb_del(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_mdb *mdb);
int ksz_enable_port(struct dsa_switch *ds, int port, struct phy_device *phy);
void ksz_disable_port(struct dsa_switch *ds, int port);
/* Common register access functions */
static inline int ksz_read8(struct ksz_device *dev, u32 reg, u8 *val)
{
unsigned int value;
int ret = regmap_read(dev->regmap[0], reg, &value);
*val = value;
return ret;
}
static inline int ksz_read16(struct ksz_device *dev, u32 reg, u16 *val)
{
unsigned int value;
int ret = regmap_read(dev->regmap[1], reg, &value);
*val = value;
return ret;
}
static inline int ksz_read32(struct ksz_device *dev, u32 reg, u32 *val)
{
unsigned int value;
int ret = regmap_read(dev->regmap[2], reg, &value);
*val = value;
return ret;
}
static inline int ksz_read64(struct ksz_device *dev, u32 reg, u64 *val)
{
u32 value[2];
int ret;
ret = regmap_bulk_read(dev->regmap[2], reg, value, 2);
if (!ret) {
/* Ick! ToDo: Add 64bit R/W to regmap on 32bit systems */
value[0] = swab32(value[0]);
value[1] = swab32(value[1]);
*val = swab64((u64)*value);
}
return ret;
}
static inline int ksz_write8(struct ksz_device *dev, u32 reg, u8 value)
{
return regmap_write(dev->regmap[0], reg, value);
}
static inline int ksz_write16(struct ksz_device *dev, u32 reg, u16 value)
{
return regmap_write(dev->regmap[1], reg, value);
}
static inline int ksz_write32(struct ksz_device *dev, u32 reg, u32 value)
{
return regmap_write(dev->regmap[2], reg, value);
}
static inline int ksz_write64(struct ksz_device *dev, u32 reg, u64 value)
{
u32 val[2];
/* Ick! ToDo: Add 64bit R/W to regmap on 32bit systems */
value = swab64(value);
val[0] = swab32(value & 0xffffffffULL);
val[1] = swab32(value >> 32ULL);
return regmap_bulk_write(dev->regmap[2], reg, val, 2);
}
static inline void ksz_pread8(struct ksz_device *dev, int port, int offset,
u8 *data)
{
ksz_read8(dev, dev->dev_ops->get_port_addr(port, offset), data);
}
static inline void ksz_pread16(struct ksz_device *dev, int port, int offset,
u16 *data)
{
ksz_read16(dev, dev->dev_ops->get_port_addr(port, offset), data);
}
static inline void ksz_pread32(struct ksz_device *dev, int port, int offset,
u32 *data)
{
ksz_read32(dev, dev->dev_ops->get_port_addr(port, offset), data);
}
static inline void ksz_pwrite8(struct ksz_device *dev, int port, int offset,
u8 data)
{
ksz_write8(dev, dev->dev_ops->get_port_addr(port, offset), data);
}
static inline void ksz_pwrite16(struct ksz_device *dev, int port, int offset,
u16 data)
{
ksz_write16(dev, dev->dev_ops->get_port_addr(port, offset), data);
}
static inline void ksz_pwrite32(struct ksz_device *dev, int port, int offset,
u32 data)
{
ksz_write32(dev, dev->dev_ops->get_port_addr(port, offset), data);
}
/* Regmap tables generation */
#define KSZ_SPI_OP_RD 3
#define KSZ_SPI_OP_WR 2
#define KSZ_SPI_OP_FLAG_MASK(opcode, swp, regbits, regpad) \
swab##swp((opcode) << ((regbits) + (regpad)))
#define KSZ_REGMAP_ENTRY(width, swp, regbits, regpad, regalign) \
{ \
.name = #width, \
.val_bits = (width), \
.reg_stride = (width) / 8, \
.reg_bits = (regbits) + (regalign), \
.pad_bits = (regpad), \
.max_register = BIT(regbits) - 1, \
.cache_type = REGCACHE_NONE, \
.read_flag_mask = \
KSZ_SPI_OP_FLAG_MASK(KSZ_SPI_OP_RD, swp, \
regbits, regpad), \
.write_flag_mask = \
KSZ_SPI_OP_FLAG_MASK(KSZ_SPI_OP_WR, swp, \
regbits, regpad), \
.reg_format_endian = REGMAP_ENDIAN_BIG, \
.val_format_endian = REGMAP_ENDIAN_BIG \
}
#define KSZ_REGMAP_TABLE(ksz, swp, regbits, regpad, regalign) \
static const struct regmap_config ksz##_regmap_config[] = { \
KSZ_REGMAP_ENTRY(8, swp, (regbits), (regpad), (regalign)), \
KSZ_REGMAP_ENTRY(16, swp, (regbits), (regpad), (regalign)), \
KSZ_REGMAP_ENTRY(32, swp, (regbits), (regpad), (regalign)), \
}
#endif
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